- information about the FMC bus abstraction
fpga/
- FPGA Manager Core.
-frv/
- - Fujitsu FR-V Linux documentation.
futex-requeue-pi.txt
- info on requeueing of tasks from a non-PI futex to a PI futex
gcc-plugins.txt
+++ /dev/null
- ================================
- Fujitsu FR-V LINUX DOCUMENTATION
- ================================
-
-This directory contains documentation for the Fujitsu FR-V CPU architecture
-port of Linux.
-
-The following documents are available:
-
- (*) features.txt
-
- A description of the basic features inherent in this architecture port.
-
-
- (*) configuring.txt
-
- A summary of the configuration options particular to this architecture.
-
-
- (*) booting.txt
-
- A description of how to boot the kernel image and a summary of the kernel
- command line options.
-
-
- (*) gdbstub.txt
-
- A description of how to debug the kernel using GDB attached by serial
- port, and a summary of the services available.
-
-
- (*) mmu-layout.txt
-
- A description of the virtual and physical memory layout used in the
- MMU linux kernel, and the registers used to support it.
-
-
- (*) gdbinit
-
- An example .gdbinit file for use with GDB. It includes macros for viewing
- MMU state on the FR451. See mmu-layout.txt for more information.
-
-
- (*) clock.txt
-
- A description of the CPU clock scaling interface.
-
-
- (*) atomic-ops.txt
-
- A description of how the FR-V kernel's atomic operations work.
+++ /dev/null
- =====================================
- FUJITSU FR-V KERNEL ATOMIC OPERATIONS
- =====================================
-
-On the FR-V CPUs, there is only one atomic Read-Modify-Write operation: the SWAP/SWAPI
-instruction. Unfortunately, this alone can't be used to implement the following operations:
-
- (*) Atomic add to memory
-
- (*) Atomic subtract from memory
-
- (*) Atomic bit modification (set, clear or invert)
-
- (*) Atomic compare and exchange
-
-On such CPUs, the standard way of emulating such operations in uniprocessor mode is to disable
-interrupts, but on the FR-V CPUs, modifying the PSR takes a lot of clock cycles, and it has to be
-done twice. This means the CPU runs for a relatively long time with interrupts disabled,
-potentially having a great effect on interrupt latency.
-
-
-=============
-NEW ALGORITHM
-=============
-
-To get around this, the following algorithm has been implemented. It operates in a way similar to
-the LL/SC instruction pairs supported on a number of platforms.
-
- (*) The CCCR.CC3 register is reserved within the kernel to act as an atomic modify abort flag.
-
- (*) In the exception prologues run on kernel->kernel entry, CCCR.CC3 is set to 0 (Undefined
- state).
-
- (*) All atomic operations can then be broken down into the following algorithm:
-
- (1) Set ICC3.Z to true and set CC3 to True (ORCC/CKEQ/ORCR).
-
- (2) Load the value currently in the memory to be modified into a register.
-
- (3) Make changes to the value.
-
- (4) If CC3 is still True, simultaneously and atomically (by VLIW packing):
-
- (a) Store the modified value back to memory.
-
- (b) Set ICC3.Z to false (CORCC on GR29 is sufficient for this - GR29 holds the current
- task pointer in the kernel, and so is guaranteed to be non-zero).
-
- (5) If ICC3.Z is still true, go back to step (1).
-
-This works in a non-SMP environment because any interrupt or other exception that happens between
-steps (1) and (4) will set CC3 to the Undefined, thus aborting the store in (4a), and causing the
-condition in ICC3 to remain with the Z flag set, thus causing step (5) to loop back to step (1).
-
-
-This algorithm suffers from two problems:
-
- (1) The condition CCCR.CC3 is cleared unconditionally by an exception, irrespective of whether or
- not any changes were made to the target memory location during that exception.
-
- (2) The branch from step (5) back to step (1) may have to happen more than once until the store
- manages to take place. In theory, this loop could cycle forever because there are too many
- interrupts coming in, but it's unlikely.
-
-
-=======
-EXAMPLE
-=======
-
-Taking an example from include/asm-frv/atomic.h:
-
- static inline int atomic_add_return(int i, atomic_t *v)
- {
- unsigned long val;
-
- asm("0: \n"
-
-It starts by setting ICC3.Z to true for later use, and also transforming that into CC3 being in the
-True state.
-
- " orcc gr0,gr0,gr0,icc3 \n" <-- (1)
- " ckeq icc3,cc7 \n" <-- (1)
-
-Then it does the load. Note that the final phase of step (1) is done at the same time as the
-load. The VLIW packing ensures they are done simultaneously. The ".p" on the load must not be
-removed without swapping the order of these two instructions.
-
- " ld.p %M0,%1 \n" <-- (2)
- " orcr cc7,cc7,cc3 \n" <-- (1)
-
-Then the proposed modification is generated. Note that the old value can be retained if required
-(such as in test_and_set_bit()).
-
- " add%I2 %1,%2,%1 \n" <-- (3)
-
-Then it attempts to store the value back, contingent on no exception having cleared CC3 since it
-was set to True.
-
- " cst.p %1,%M0 ,cc3,#1 \n" <-- (4a)
-
-It simultaneously records the success or failure of the store in ICC3.Z.
-
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" <-- (4b)
-
-Such that the branch can then be taken if the operation was aborted.
-
- " beq icc3,#0,0b \n" <-- (5)
- : "+U"(v->counter), "=&r"(val)
- : "NPr"(i)
- : "memory", "cc7", "cc3", "icc3"
- );
-
- return val;
- }
-
-
-=============
-CONFIGURATION
-=============
-
-The atomic ops implementation can be made inline or out-of-line by changing the
-CONFIG_FRV_OUTOFLINE_ATOMIC_OPS configuration variable. Making it out-of-line has a number of
-advantages:
-
- - The resulting kernel image may be smaller
- - Debugging is easier as atomic ops can just be stepped over and they can be breakpointed
-
-Keeping it inline also has a number of advantages:
-
- - The resulting kernel may be Faster
- - no out-of-line function calls need to be made
- - the compiler doesn't have half its registers clobbered by making a call
-
-The out-of-line implementations live in arch/frv/lib/atomic-ops.S.
+++ /dev/null
- =========================
- BOOTING FR-V LINUX KERNEL
- =========================
-
-======================
-PROVIDING A FILESYSTEM
-======================
-
-First of all, a root filesystem must be made available. This can be done in
-one of two ways:
-
- (1) NFS Export
-
- A filesystem should be constructed in a directory on an NFS server that
- the target board can reach. This directory should then be NFS exported
- such that the target board can read and write into it as root.
-
- (2) Flash Filesystem (JFFS2 Recommended)
-
- In this case, the image must be stored or built up on flash before it
- can be used. A complete image can be built using the mkfs.jffs2 or
- similar program and then downloaded and stored into flash by RedBoot.
-
-
-========================
-LOADING THE KERNEL IMAGE
-========================
-
-The kernel will need to be loaded into RAM by RedBoot (or by some alternative
-boot loader) before it can be run. The kernel image (arch/frv/boot/Image) may
-be loaded in one of three ways:
-
- (1) Load from Flash
-
- This is the simplest. RedBoot can store an image in the flash (see the
- RedBoot documentation) and then load it back into RAM. RedBoot keeps
- track of the load address, entry point and size, so the command to do
- this is simply:
-
- fis load linux
-
- The image is then ready to be executed.
-
- (2) Load by TFTP
-
- The following command will download a raw binary kernel image from the
- default server (as negotiated by BOOTP) and store it into RAM:
-
- load -b 0x00100000 -r /tftpboot/image.bin
-
- The image is then ready to be executed.
-
- (3) Load by Y-Modem
-
- The following command will download a raw binary kernel image across the
- serial port that RedBoot is currently using:
-
- load -m ymodem -b 0x00100000 -r zImage
-
- The serial client (such as minicom) must then be told to transmit the
- program by Y-Modem.
-
- When finished, the image will then be ready to be executed.
-
-
-==================
-BOOTING THE KERNEL
-==================
-
-Boot the image with the following RedBoot command:
-
- exec -c "<CMDLINE>" 0x00100000
-
-For example:
-
- exec -c "console=ttySM0,115200 ip=:::::dhcp root=/dev/mtdblock2 rw"
-
-This will start the kernel running. Note that if the GDB-stub is compiled in,
-then the kernel will immediately wait for GDB to connect over serial before
-doing anything else. See the section on kernel debugging with GDB.
-
-The kernel command line <CMDLINE> tells the kernel where its console is and
-how to find its root filesystem. This is made up of the following components,
-separated by spaces:
-
- (*) console=ttyS<x>[,<baud>[<parity>[<bits>[<flow>]]]]
-
- This specifies that the system console should output through on-chip
- serial port <x> (which can be "0" or "1").
-
- <baud> is a standard baud rate between 1200 and 115200 (default 9600).
-
- <parity> is a parity setting of "N", "O", "E", "M" or "S" for None, Odd,
- Even, Mark or Space. "None" is the default.
-
- <stop> is "7" or "8" for the number of bits per character. "8" is the
- default.
-
- <flow> is "r" to use flow control (XCTS on serial port 2 only). The
- default is to not use flow control.
-
- For example:
-
- console=ttyS0,115200
-
- To use the first on-chip serial port at baud rate 115200, no parity, 8
- bits, and no flow control.
-
- (*) root=<xxxx>
-
- This specifies the device upon which the root filesystem resides. It
- may be specified by major and minor number, device path, or even
- partition uuid, if supported. For example:
-
- /dev/nfs NFS root filesystem
- /dev/mtdblock3 Fourth RedBoot partition on the System Flash
- PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF/PARTNROFF=1
- first partition after the partition with the given UUID
- 253:0 Device with major 253 and minor 0
-
- Authoritative information can be found in
- "Documentation/admin-guide/kernel-parameters.rst".
-
- (*) rw
-
- Start with the root filesystem mounted Read/Write.
-
- The remaining components are all optional:
-
- (*) ip=<ip>::::<host>:<iface>:<cfg>
-
- Configure the network interface. If <cfg> is "off" then <ip> should
- specify the IP address for the network device <iface>. <host> provide
- the hostname for the device.
-
- If <cfg> is "bootp" or "dhcp", then all of these parameters will be
- discovered by consulting a BOOTP or DHCP server.
-
- For example, the following might be used:
-
- ip=192.168.73.12::::frv:eth0:off
-
- This sets the IP address on the VDK motherboard RTL8029 ethernet chipset
- (eth0) to be 192.168.73.12, and sets the board's hostname to be "frv".
-
- (*) nfsroot=<server>:<dir>[,v<vers>]
-
- This is mandatory if "root=/dev/nfs" is given as an option. It tells the
- kernel the IP address of the NFS server providing its root filesystem,
- and the pathname on that server of the filesystem.
-
- The NFS version to use can also be specified. v2 and v3 are supported by
- Linux.
-
- For example:
-
- nfsroot=192.168.73.1:/nfsroot-frv
-
- (*) profile=1
-
- Turns on the kernel profiler (accessible through /proc/profile).
-
- (*) console=gdb0
-
- This can be used as an alternative to the "console=ttyS..." listed
- above. I tells the kernel to pass the console output to GDB if the
- gdbstub is compiled in to the kernel.
-
- If this is used, then the gdbstub passes the text to GDB, which then
- simply dumps it to its standard output.
-
- (*) mem=<xxx>M
-
- Normally the kernel will work out how much SDRAM it has by reading the
- SDRAM controller registers. That can be overridden with this
- option. This allows the kernel to be told that it has <xxx> megabytes of
- memory available.
-
- (*) init=<prog> [<arg> [<arg> [<arg> ...]]]
-
- This tells the kernel what program to run initially. By default this is
- /sbin/init, but /sbin/sash or /bin/sh are common alternatives.
+++ /dev/null
-Clock scaling
--------------
-
-The kernel supports scaling of CLCK.CMODE, CLCK.CM and CLKC.P0 clock
-registers. If built with CONFIG_PM and CONFIG_SYSCTL options enabled, four
-extra files will appear in the directory /proc/sys/pm/. Reading these files
-will show:
-
- p0 -- current value of the P0 bit in CLKC register.
- cm -- current value of the CM bits in CLKC register.
- cmode -- current value of the CMODE bits in CLKC register.
-
-On all boards, the 'p0' file should also be writable, and either '1' or '0'
-can be rewritten, to set or clear the CLKC_P0 bit respectively, hence
-controlling whether the resource bus rate clock is halved.
-
-The 'cm' file should also be available on all boards. '0' can be written to it
-to shift the board into High-Speed mode (normal), and '1' can be written to
-shift the board into Medium-Speed mode. Selecting Low-Speed mode is not
-supported by this interface, even though some CPUs do support it.
-
-On the boards with FR405 CPU (i.e. CB60 and CB70), the 'cmode' file is also
-writable, allowing the CPU core speed (and other clock speeds) to be
-controlled from userspace.
-
-
-Determining current and possible settings
------------------------------------------
-
-The current state and the available masks can be found in /proc/cpuinfo. For
-example, on the CB70:
-
- # cat /proc/cpuinfo
- CPU-Series: fr400
- CPU-Core: fr405, gr0-31, BE, CCCR
- CPU: mb93405
- MMU: Prot
- FP-Media: fr0-31, Media
- System: mb93091-cb70, mb93090-mb00
- PM-Controls: cmode=0xd31f, cm=0x3, p0=0x3, suspend=0x9
- PM-Status: cmode=3, cm=0, p0=0
- Clock-In: 50.00 MHz
- Clock-Core: 300.00 MHz
- Clock-SDRAM: 100.00 MHz
- Clock-CBus: 100.00 MHz
- Clock-Res: 50.00 MHz
- Clock-Ext: 50.00 MHz
- Clock-DSU: 25.00 MHz
- BogoMips: 300.00
-
-And on the PDK, the PM lines look like the following:
-
- PM-Controls: cm=0x3, p0=0x3, suspend=0x9
- PM-Status: cmode=9, cm=0, p0=0
-
-The PM-Controls line, if present, will indicate which /proc/sys/pm files can
-be set to what values. The specification values are bitmasks; so, for example,
-"suspend=0x9" indicates that 0 and 3 can be written validly to
-/proc/sys/pm/suspend.
-
-The PM-Controls line will only be present if CONFIG_PM is configured to Y.
-
-The PM-Status line indicates which clock controls are set to which value. If
-the file can be read, then the suspend value must be 0, and so that's not
-included.
+++ /dev/null
- =======================================
- FUJITSU FR-V LINUX KERNEL CONFIGURATION
- =======================================
-
-=====================
-CONFIGURATION OPTIONS
-=====================
-
-The most important setting is in the "MMU support options" tab (the first
-presented in the configuration tools available):
-
- (*) "Kernel Type"
-
- This options allows selection of normal, MMU-requiring linux, and uClinux
- (which doesn't require an MMU and doesn't have inter-process protection).
-
-There are a number of settings in the "Processor type and features" section of
-the kernel configuration that need to be considered.
-
- (*) "CPU"
-
- The register and instruction sets at the core of the processor. This can
- only be set to "FR40x/45x/55x" at the moment - but this permits usage of
- the kernel with MB93091 CB10, CB11, CB30, CB41, CB60, CB70 and CB451
- CPU boards, and with the MB93093 PDK board.
-
- (*) "System"
-
- This option allows a choice of basic system. This governs the peripherals
- that are expected to be available.
-
- (*) "Motherboard"
-
- This specifies the type of motherboard being used, and the peripherals
- upon it. Currently only "MB93090-MB00" can be set here.
-
- (*) "Default cache-write mode"
-
- This controls the initial data cache write management mode. By default
- Write-Through is selected, but Write-Back (Copy-Back) can also be
- selected. This can be changed dynamically once the kernel is running (see
- features.txt).
-
-There are some architecture specific configuration options in the "General
-Setup" section of the kernel configuration too:
-
- (*) "Reserve memory uncached for (PCI) DMA"
-
- This requests that a uClinux kernel set aside some memory in an uncached
- window for the use as consistent DMA memory (mainly for PCI). At least a
- megabyte will be allocated in this way, possibly more. Any memory so
- reserved will not be available for normal allocations.
-
- (*) "Kernel support for ELF-FDPIC binaries"
-
- This enables the binary-format driver for the new FDPIC ELF binaries that
- this platform normally uses. These binaries are totally relocatable -
- their separate sections can relocated independently, allowing them to be
- shared on uClinux where possible. This should normally be enabled.
-
- (*) "Kernel image protection"
-
- This makes the protection register governing access to the core kernel
- image prohibit access by userspace programs. This option is available on
- uClinux only.
-
-There are also a number of settings in the "Kernel Hacking" section of the
-kernel configuration especially for debugging a kernel on this
-architecture. See the "gdbstub.txt" file for information about those.
-
-
-======================
-DEFAULT CONFIGURATIONS
-======================
-
-The kernel sources include a number of example default configurations:
-
- (*) defconfig-mb93091
-
- Default configuration for the MB93091-VDK with both CPU board and
- MB93090-MB00 motherboard running uClinux.
-
-
- (*) defconfig-mb93091-fb
-
- Default configuration for the MB93091-VDK with CPU board,
- MB93090-MB00 motherboard, and DAV board running uClinux.
- Includes framebuffer driver.
-
-
- (*) defconfig-mb93093
-
- Default configuration for the MB93093-PDK board running uClinux.
-
-
- (*) defconfig-cb70-standalone
-
- Default configuration for the MB93091-VDK with only CB70 CPU board
- running uClinux. This will use the CB70's DM9000 for network access.
-
-
- (*) defconfig-mmu
-
- Default configuration for the MB93091-VDK with both CB451 CPU board and
- MB93090-MB00 motherboard running MMU linux.
-
- (*) defconfig-mmu-audio
-
- Default configuration for the MB93091-VDK with CB451 CPU board, DAV
- board, and MB93090-MB00 motherboard running MMU linux. Includes
- audio driver.
-
- (*) defconfig-mmu-fb
-
- Default configuration for the MB93091-VDK with CB451 CPU board, DAV
- board, and MB93090-MB00 motherboard running MMU linux. Includes
- framebuffer driver.
-
- (*) defconfig-mmu-standalone
-
- Default configuration for the MB93091-VDK with only CB451 CPU board
- running MMU linux.
-
-
-
+++ /dev/null
- ===========================
- FUJITSU FR-V LINUX FEATURES
- ===========================
-
-This kernel port has a number of features of which the user should be aware:
-
- (*) Linux and uClinux
-
- The FR-V architecture port supports both normal MMU linux and uClinux out
- of the same sources.
-
-
- (*) CPU support
-
- Support for the FR401, FR403, FR405, FR451 and FR555 CPUs should work with
- the same uClinux kernel configuration.
-
- In normal (MMU) Linux mode, only the FR451 CPU will work as that is the
- only one with a suitably featured CPU.
-
- The kernel is written and compiled with the assumption that only the
- bottom 32 GR registers and no FR registers will be used by the kernel
- itself, however all extra userspace registers will be saved on context
- switch. Note that since most CPUs can't support lazy switching, no attempt
- is made to do lazy register saving where that would be possible (FR555
- only currently).
-
-
- (*) Board support
-
- The board on which the kernel will run can be configured on the "Processor
- type and features" configuration tab.
-
- Set the System to "MB93093-PDK" to boot from the MB93093 (FR403) PDK.
-
- Set the System to "MB93091-VDK" to boot from the CB11, CB30, CB41, CB60,
- CB70 or CB451 VDK boards. Set the Motherboard setting to "MB93090-MB00" to
- boot with the standard ATA90590B VDK motherboard, and set it to "None" to
- boot without any motherboard.
-
-
- (*) Binary Formats
-
- The only userspace binary format supported is FDPIC ELF. Normal ELF, FLAT
- and AOUT binaries are not supported for this architecture.
-
- FDPIC ELF supports shared library and program interpreter facilities.
-
-
- (*) Scheduler Speed
-
- The kernel scheduler runs at 100Hz irrespective of the clock speed on this
- architecture. This value is set in asm/param.h (see the HZ macro defined
- there).
-
-
- (*) Normal (MMU) Linux Memory Layout.
-
- See mmu-layout.txt in this directory for a description of the normal linux
- memory layout
-
- See include/asm-frv/mem-layout.h for constants pertaining to the memory
- layout.
-
- See include/asm-frv/mb-regs.h for the constants pertaining to the I/O bus
- controller configuration.
-
-
- (*) uClinux Memory Layout
-
- The memory layout used by the uClinux kernel is as follows:
-
- 0x00000000 - 0x00000FFF Null pointer catch page
- 0x20000000 - 0x200FFFFF CS2# [PDK] FPGA
- 0xC0000000 - 0xCFFFFFFF SDRAM
- 0xC0000000 Base of Linux kernel image
- 0xE0000000 - 0xEFFFFFFF CS2# [VDK] SLBUS/PCI window
- 0xF0000000 - 0xF0FFFFFF CS5# MB93493 CSC area (DAV daughter board)
- 0xF1000000 - 0xF1FFFFFF CS7# [CB70/CB451] CPU-card PCMCIA port space
- 0xFC000000 - 0xFC0FFFFF CS1# [VDK] MB86943 config space
- 0xFC100000 - 0xFC1FFFFF CS6# [CB70/CB451] CPU-card DM9000 NIC space
- 0xFC100000 - 0xFC1FFFFF CS6# [PDK] AX88796 NIC space
- 0xFC200000 - 0xFC2FFFFF CS3# MB93493 CSR area (DAV daughter board)
- 0xFD000000 - 0xFDFFFFFF CS4# [CB70/CB451] CPU-card extra flash space
- 0xFE000000 - 0xFEFFFFFF Internal CPU peripherals
- 0xFF000000 - 0xFF1FFFFF CS0# Flash 1
- 0xFF200000 - 0xFF3FFFFF CS0# Flash 2
- 0xFFC00000 - 0xFFC0001F CS0# [VDK] FPGA
-
- The kernel reads the size of the SDRAM from the memory bus controller
- registers by default.
-
- The kernel initialisation code (1) adjusts the SDRAM base addresses to
- move the SDRAM to desired address, (2) moves the kernel image down to the
- bottom of SDRAM, (3) adjusts the bus controller registers to move I/O
- windows, and (4) rearranges the protection registers to protect all of
- this.
-
- The reasons for doing this are: (1) the page at address 0 should be
- inaccessible so that NULL pointer errors can be caught; and (2) the bottom
- three quarters are left unoccupied so that an FR-V CPU with an MMU can use
- it for virtual userspace mappings.
-
- See include/asm-frv/mem-layout.h for constants pertaining to the memory
- layout.
-
- See include/asm-frv/mb-regs.h for the constants pertaining to the I/O bus
- controller configuration.
-
-
- (*) uClinux Memory Protection
-
- A DAMPR register is used to cover the entire region used for I/O
- (0xE0000000 - 0xFFFFFFFF). This permits the kernel to make uncached
- accesses to this region. Userspace is not permitted to access it.
-
- The DAMPR/IAMPR protection registers not in use for any other purpose are
- tiled over the top of the SDRAM such that:
-
- (1) The core kernel image is covered by as small a tile as possible
- granting only the kernel access to the underlying data, whilst
- making sure no SDRAM is actually made unavailable by this approach.
-
- (2) All other tiles are arranged to permit userspace access to the rest
- of the SDRAM.
-
- Barring point (1), there is nothing to protect kernel data against
- userspace damage - but this is uClinux.
-
-
- (*) Exceptions and Fixups
-
- Since the FR40x and FR55x CPUs that do not have full MMUs generate
- imprecise data error exceptions, there are currently no automatic fixup
- services available in uClinux. This includes misaligned memory access
- fixups.
-
- Userspace EFAULT errors can be trapped by issuing a MEMBAR instruction and
- forcing the fault to happen there.
-
- On the FR451, however, data exceptions are mostly precise, and so
- exception fixup handling is implemented as normal.
-
-
- (*) Userspace Breakpoints
-
- The ptrace() system call supports the following userspace debugging
- features:
-
- (1) Hardware assisted single step.
-
- (2) Breakpoint via the FR-V "BREAK" instruction.
-
- (3) Breakpoint via the FR-V "TIRA GR0, #1" instruction.
-
- (4) Syscall entry/exit trap.
-
- Each of the above generates a SIGTRAP.
-
-
- (*) On-Chip Serial Ports
-
- The FR-V on-chip serial ports are made available as ttyS0 and ttyS1. Note
- that if the GDB stub is compiled in, ttyS1 will not actually be available
- as it will be being used for the GDB stub.
-
- These ports can be made by:
-
- mknod /dev/ttyS0 c 4 64
- mknod /dev/ttyS1 c 4 65
-
-
- (*) Maskable Interrupts
-
- Level 15 (Non-maskable) interrupts are dealt with by the GDB stub if
- present, and cause a panic if not. If the GDB stub is present, ttyS1's
- interrupts are rated at level 15.
-
- All other interrupts are distributed over the set of available priorities
- so that no IRQs are shared where possible. The arch interrupt handling
- routines attempt to disentangle the various sources available through the
- CPU's own multiplexor, and those on off-CPU peripherals.
-
-
- (*) Accessing PCI Devices
-
- Where PCI is available, care must be taken when dealing with drivers that
- access PCI devices. PCI devices present their data in little-endian form,
- but the CPU sees it in big-endian form. The macros in asm/io.h try to get
- this right, but may not under all circumstances...
-
-
- (*) Ax88796 Ethernet Driver
-
- The MB93093 PDK board has an Ax88796 ethernet chipset (an NE2000 clone). A
- driver has been written to deal specifically with this. The driver
- provides MII services for the card.
-
- The driver can be configured by running make xconfig, and going to:
-
- (*) Network device support
- - turn on "Network device support"
- (*) Ethernet (10 or 100Mbit)
- - turn on "Ethernet (10 or 100Mbit)"
- - turn on "AX88796 NE2000 compatible chipset"
-
- The driver can be found in:
-
- drivers/net/ax88796.c
- include/asm/ax88796.h
-
-
- (*) WorkRAM Driver
-
- This driver provides a character device that permits access to the WorkRAM
- that can be found on the FR451 CPU. Each page is accessible through a
- separate minor number, thereby permitting each page to have its own
- filesystem permissions set on the device file.
-
- The device files should be:
-
- mknod /dev/frv/workram0 c 240 0
- mknod /dev/frv/workram1 c 240 1
- mknod /dev/frv/workram2 c 240 2
- ...
-
- The driver will not permit the opening of any device file that does not
- correspond to at least a partial page of WorkRAM. So the first device file
- is the only one available on the FR451. If any other CPU is detected, none
- of the devices will be openable.
-
- The devices can be accessed with read, write and llseek, and can also be
- mmapped. If they're mmapped, they will only map at the appropriate
- 0x7e8nnnnn address on linux and at the 0xfe8nnnnn address on uClinux. If
- MAP_FIXED is not specified, the appropriate address will be chosen anyway.
-
- The mappings must be MAP_SHARED not MAP_PRIVATE, and must not be
- PROT_EXEC. They must also start at file offset 0, and must not be longer
- than one page in size.
-
- This driver can be configured by running make xconfig, and going to:
-
- (*) Character devices
- - turn on "Fujitsu FR-V CPU WorkRAM support"
-
-
- (*) Dynamic data cache write mode changing
-
- It is possible to view and to change the data cache's write mode through
- the /proc/sys/frv/cache-mode file while the kernel is running. There are
- two modes available:
-
- NAME MEANING
- ===== ==========================================
- wthru Data cache is in Write-Through mode
- wback Data cache is in Write-Back/Copy-Back mode
-
- To read the cache mode:
-
- # cat /proc/sys/frv/cache-mode
- wthru
-
- To change the cache mode:
-
- # echo wback >/proc/sys/frv/cache-mode
- # cat /proc/sys/frv/cache-mode
- wback
-
-
- (*) MMU Context IDs and Pinning
-
- On MMU Linux the CPU supports the concept of a context ID in its MMU to
- make it more efficient (TLB entries are labelled with a context ID to link
- them to specific tasks).
-
- Normally once a context ID is allocated, it will remain affixed to a task
- or CLONE_VM'd group of tasks for as long as it exists. However, since the
- kernel is capable of supporting more tasks than there are possible ID
- numbers, the kernel will pass context IDs from one task to another if
- there are insufficient available.
-
- The context ID currently in use by a task can be viewed in /proc:
-
- # grep CXNR /proc/1/status
- CXNR: 1
-
- Note that kernel threads do not have a userspace context, and so will not
- show a CXNR entry in that file.
-
- Under some circumstances, however, it is desirable to pin a context ID on
- a process such that the kernel won't pass it on. This can be done by
- writing the process ID of the target process to a special file:
-
- # echo 17 >/proc/sys/frv/pin-cxnr
-
- Reading from the file will then show the context ID pinned.
-
- # cat /proc/sys/frv/pin-cxnr
- 4
-
- The context ID will remain pinned as long as any process is using that
- context, i.e.: when the all the subscribing processes have exited or
- exec'd; or when an unpinning request happens:
-
- # echo 0 >/proc/sys/frv/pin-cxnr
-
- When there isn't a pinned context, the file shows -1:
-
- # cat /proc/sys/frv/pin-cxnr
- -1
+++ /dev/null
-set remotebreak 1
-
-define _amr
-
-printf "AMRx DAMR IAMR \n"
-printf "==== ===================== =====================\n"
-printf "amr0 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x0].L,__debug_mmu.damr[0x0].P,__debug_mmu.iamr[0x0].L,__debug_mmu.iamr[0x0].P
-printf "amr1 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x1].L,__debug_mmu.damr[0x1].P,__debug_mmu.iamr[0x1].L,__debug_mmu.iamr[0x1].P
-printf "amr2 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x2].L,__debug_mmu.damr[0x2].P,__debug_mmu.iamr[0x2].L,__debug_mmu.iamr[0x2].P
-printf "amr3 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x3].L,__debug_mmu.damr[0x3].P,__debug_mmu.iamr[0x3].L,__debug_mmu.iamr[0x3].P
-printf "amr4 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x4].L,__debug_mmu.damr[0x4].P,__debug_mmu.iamr[0x4].L,__debug_mmu.iamr[0x4].P
-printf "amr5 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x5].L,__debug_mmu.damr[0x5].P,__debug_mmu.iamr[0x5].L,__debug_mmu.iamr[0x5].P
-printf "amr6 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x6].L,__debug_mmu.damr[0x6].P,__debug_mmu.iamr[0x6].L,__debug_mmu.iamr[0x6].P
-printf "amr7 : L:%08lx P:%08lx : L:%08lx P:%08lx\n",__debug_mmu.damr[0x7].L,__debug_mmu.damr[0x7].P,__debug_mmu.iamr[0x7].L,__debug_mmu.iamr[0x7].P
-
-printf "amr8 : L:%08lx P:%08lx\n",__debug_mmu.damr[0x8].L,__debug_mmu.damr[0x8].P
-printf "amr9 : L:%08lx P:%08lx\n",__debug_mmu.damr[0x9].L,__debug_mmu.damr[0x9].P
-printf "amr10: L:%08lx P:%08lx\n",__debug_mmu.damr[0xa].L,__debug_mmu.damr[0xa].P
-printf "amr11: L:%08lx P:%08lx\n",__debug_mmu.damr[0xb].L,__debug_mmu.damr[0xb].P
-
-end
-
-
-define _tlb
-printf "tlb[0x00]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x0].L,__debug_mmu.tlb[0x0].P,__debug_mmu.tlb[0x40+0x0].L,__debug_mmu.tlb[0x40+0x0].P
-printf "tlb[0x01]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1].L,__debug_mmu.tlb[0x1].P,__debug_mmu.tlb[0x40+0x1].L,__debug_mmu.tlb[0x40+0x1].P
-printf "tlb[0x02]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2].L,__debug_mmu.tlb[0x2].P,__debug_mmu.tlb[0x40+0x2].L,__debug_mmu.tlb[0x40+0x2].P
-printf "tlb[0x03]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3].L,__debug_mmu.tlb[0x3].P,__debug_mmu.tlb[0x40+0x3].L,__debug_mmu.tlb[0x40+0x3].P
-printf "tlb[0x04]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x4].L,__debug_mmu.tlb[0x4].P,__debug_mmu.tlb[0x40+0x4].L,__debug_mmu.tlb[0x40+0x4].P
-printf "tlb[0x05]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x5].L,__debug_mmu.tlb[0x5].P,__debug_mmu.tlb[0x40+0x5].L,__debug_mmu.tlb[0x40+0x5].P
-printf "tlb[0x06]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x6].L,__debug_mmu.tlb[0x6].P,__debug_mmu.tlb[0x40+0x6].L,__debug_mmu.tlb[0x40+0x6].P
-printf "tlb[0x07]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x7].L,__debug_mmu.tlb[0x7].P,__debug_mmu.tlb[0x40+0x7].L,__debug_mmu.tlb[0x40+0x7].P
-printf "tlb[0x08]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x8].L,__debug_mmu.tlb[0x8].P,__debug_mmu.tlb[0x40+0x8].L,__debug_mmu.tlb[0x40+0x8].P
-printf "tlb[0x09]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x9].L,__debug_mmu.tlb[0x9].P,__debug_mmu.tlb[0x40+0x9].L,__debug_mmu.tlb[0x40+0x9].P
-printf "tlb[0x0a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xa].L,__debug_mmu.tlb[0xa].P,__debug_mmu.tlb[0x40+0xa].L,__debug_mmu.tlb[0x40+0xa].P
-printf "tlb[0x0b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xb].L,__debug_mmu.tlb[0xb].P,__debug_mmu.tlb[0x40+0xb].L,__debug_mmu.tlb[0x40+0xb].P
-printf "tlb[0x0c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xc].L,__debug_mmu.tlb[0xc].P,__debug_mmu.tlb[0x40+0xc].L,__debug_mmu.tlb[0x40+0xc].P
-printf "tlb[0x0d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xd].L,__debug_mmu.tlb[0xd].P,__debug_mmu.tlb[0x40+0xd].L,__debug_mmu.tlb[0x40+0xd].P
-printf "tlb[0x0e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xe].L,__debug_mmu.tlb[0xe].P,__debug_mmu.tlb[0x40+0xe].L,__debug_mmu.tlb[0x40+0xe].P
-printf "tlb[0x0f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0xf].L,__debug_mmu.tlb[0xf].P,__debug_mmu.tlb[0x40+0xf].L,__debug_mmu.tlb[0x40+0xf].P
-printf "tlb[0x10]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x10].L,__debug_mmu.tlb[0x10].P,__debug_mmu.tlb[0x40+0x10].L,__debug_mmu.tlb[0x40+0x10].P
-printf "tlb[0x11]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x11].L,__debug_mmu.tlb[0x11].P,__debug_mmu.tlb[0x40+0x11].L,__debug_mmu.tlb[0x40+0x11].P
-printf "tlb[0x12]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x12].L,__debug_mmu.tlb[0x12].P,__debug_mmu.tlb[0x40+0x12].L,__debug_mmu.tlb[0x40+0x12].P
-printf "tlb[0x13]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x13].L,__debug_mmu.tlb[0x13].P,__debug_mmu.tlb[0x40+0x13].L,__debug_mmu.tlb[0x40+0x13].P
-printf "tlb[0x14]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x14].L,__debug_mmu.tlb[0x14].P,__debug_mmu.tlb[0x40+0x14].L,__debug_mmu.tlb[0x40+0x14].P
-printf "tlb[0x15]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x15].L,__debug_mmu.tlb[0x15].P,__debug_mmu.tlb[0x40+0x15].L,__debug_mmu.tlb[0x40+0x15].P
-printf "tlb[0x16]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x16].L,__debug_mmu.tlb[0x16].P,__debug_mmu.tlb[0x40+0x16].L,__debug_mmu.tlb[0x40+0x16].P
-printf "tlb[0x17]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x17].L,__debug_mmu.tlb[0x17].P,__debug_mmu.tlb[0x40+0x17].L,__debug_mmu.tlb[0x40+0x17].P
-printf "tlb[0x18]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x18].L,__debug_mmu.tlb[0x18].P,__debug_mmu.tlb[0x40+0x18].L,__debug_mmu.tlb[0x40+0x18].P
-printf "tlb[0x19]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x19].L,__debug_mmu.tlb[0x19].P,__debug_mmu.tlb[0x40+0x19].L,__debug_mmu.tlb[0x40+0x19].P
-printf "tlb[0x1a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1a].L,__debug_mmu.tlb[0x1a].P,__debug_mmu.tlb[0x40+0x1a].L,__debug_mmu.tlb[0x40+0x1a].P
-printf "tlb[0x1b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1b].L,__debug_mmu.tlb[0x1b].P,__debug_mmu.tlb[0x40+0x1b].L,__debug_mmu.tlb[0x40+0x1b].P
-printf "tlb[0x1c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1c].L,__debug_mmu.tlb[0x1c].P,__debug_mmu.tlb[0x40+0x1c].L,__debug_mmu.tlb[0x40+0x1c].P
-printf "tlb[0x1d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1d].L,__debug_mmu.tlb[0x1d].P,__debug_mmu.tlb[0x40+0x1d].L,__debug_mmu.tlb[0x40+0x1d].P
-printf "tlb[0x1e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1e].L,__debug_mmu.tlb[0x1e].P,__debug_mmu.tlb[0x40+0x1e].L,__debug_mmu.tlb[0x40+0x1e].P
-printf "tlb[0x1f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x1f].L,__debug_mmu.tlb[0x1f].P,__debug_mmu.tlb[0x40+0x1f].L,__debug_mmu.tlb[0x40+0x1f].P
-printf "tlb[0x20]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x20].L,__debug_mmu.tlb[0x20].P,__debug_mmu.tlb[0x40+0x20].L,__debug_mmu.tlb[0x40+0x20].P
-printf "tlb[0x21]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x21].L,__debug_mmu.tlb[0x21].P,__debug_mmu.tlb[0x40+0x21].L,__debug_mmu.tlb[0x40+0x21].P
-printf "tlb[0x22]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x22].L,__debug_mmu.tlb[0x22].P,__debug_mmu.tlb[0x40+0x22].L,__debug_mmu.tlb[0x40+0x22].P
-printf "tlb[0x23]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x23].L,__debug_mmu.tlb[0x23].P,__debug_mmu.tlb[0x40+0x23].L,__debug_mmu.tlb[0x40+0x23].P
-printf "tlb[0x24]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x24].L,__debug_mmu.tlb[0x24].P,__debug_mmu.tlb[0x40+0x24].L,__debug_mmu.tlb[0x40+0x24].P
-printf "tlb[0x25]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x25].L,__debug_mmu.tlb[0x25].P,__debug_mmu.tlb[0x40+0x25].L,__debug_mmu.tlb[0x40+0x25].P
-printf "tlb[0x26]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x26].L,__debug_mmu.tlb[0x26].P,__debug_mmu.tlb[0x40+0x26].L,__debug_mmu.tlb[0x40+0x26].P
-printf "tlb[0x27]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x27].L,__debug_mmu.tlb[0x27].P,__debug_mmu.tlb[0x40+0x27].L,__debug_mmu.tlb[0x40+0x27].P
-printf "tlb[0x28]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x28].L,__debug_mmu.tlb[0x28].P,__debug_mmu.tlb[0x40+0x28].L,__debug_mmu.tlb[0x40+0x28].P
-printf "tlb[0x29]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x29].L,__debug_mmu.tlb[0x29].P,__debug_mmu.tlb[0x40+0x29].L,__debug_mmu.tlb[0x40+0x29].P
-printf "tlb[0x2a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2a].L,__debug_mmu.tlb[0x2a].P,__debug_mmu.tlb[0x40+0x2a].L,__debug_mmu.tlb[0x40+0x2a].P
-printf "tlb[0x2b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2b].L,__debug_mmu.tlb[0x2b].P,__debug_mmu.tlb[0x40+0x2b].L,__debug_mmu.tlb[0x40+0x2b].P
-printf "tlb[0x2c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2c].L,__debug_mmu.tlb[0x2c].P,__debug_mmu.tlb[0x40+0x2c].L,__debug_mmu.tlb[0x40+0x2c].P
-printf "tlb[0x2d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2d].L,__debug_mmu.tlb[0x2d].P,__debug_mmu.tlb[0x40+0x2d].L,__debug_mmu.tlb[0x40+0x2d].P
-printf "tlb[0x2e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2e].L,__debug_mmu.tlb[0x2e].P,__debug_mmu.tlb[0x40+0x2e].L,__debug_mmu.tlb[0x40+0x2e].P
-printf "tlb[0x2f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x2f].L,__debug_mmu.tlb[0x2f].P,__debug_mmu.tlb[0x40+0x2f].L,__debug_mmu.tlb[0x40+0x2f].P
-printf "tlb[0x30]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x30].L,__debug_mmu.tlb[0x30].P,__debug_mmu.tlb[0x40+0x30].L,__debug_mmu.tlb[0x40+0x30].P
-printf "tlb[0x31]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x31].L,__debug_mmu.tlb[0x31].P,__debug_mmu.tlb[0x40+0x31].L,__debug_mmu.tlb[0x40+0x31].P
-printf "tlb[0x32]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x32].L,__debug_mmu.tlb[0x32].P,__debug_mmu.tlb[0x40+0x32].L,__debug_mmu.tlb[0x40+0x32].P
-printf "tlb[0x33]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x33].L,__debug_mmu.tlb[0x33].P,__debug_mmu.tlb[0x40+0x33].L,__debug_mmu.tlb[0x40+0x33].P
-printf "tlb[0x34]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x34].L,__debug_mmu.tlb[0x34].P,__debug_mmu.tlb[0x40+0x34].L,__debug_mmu.tlb[0x40+0x34].P
-printf "tlb[0x35]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x35].L,__debug_mmu.tlb[0x35].P,__debug_mmu.tlb[0x40+0x35].L,__debug_mmu.tlb[0x40+0x35].P
-printf "tlb[0x36]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x36].L,__debug_mmu.tlb[0x36].P,__debug_mmu.tlb[0x40+0x36].L,__debug_mmu.tlb[0x40+0x36].P
-printf "tlb[0x37]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x37].L,__debug_mmu.tlb[0x37].P,__debug_mmu.tlb[0x40+0x37].L,__debug_mmu.tlb[0x40+0x37].P
-printf "tlb[0x38]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x38].L,__debug_mmu.tlb[0x38].P,__debug_mmu.tlb[0x40+0x38].L,__debug_mmu.tlb[0x40+0x38].P
-printf "tlb[0x39]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x39].L,__debug_mmu.tlb[0x39].P,__debug_mmu.tlb[0x40+0x39].L,__debug_mmu.tlb[0x40+0x39].P
-printf "tlb[0x3a]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3a].L,__debug_mmu.tlb[0x3a].P,__debug_mmu.tlb[0x40+0x3a].L,__debug_mmu.tlb[0x40+0x3a].P
-printf "tlb[0x3b]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3b].L,__debug_mmu.tlb[0x3b].P,__debug_mmu.tlb[0x40+0x3b].L,__debug_mmu.tlb[0x40+0x3b].P
-printf "tlb[0x3c]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3c].L,__debug_mmu.tlb[0x3c].P,__debug_mmu.tlb[0x40+0x3c].L,__debug_mmu.tlb[0x40+0x3c].P
-printf "tlb[0x3d]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3d].L,__debug_mmu.tlb[0x3d].P,__debug_mmu.tlb[0x40+0x3d].L,__debug_mmu.tlb[0x40+0x3d].P
-printf "tlb[0x3e]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3e].L,__debug_mmu.tlb[0x3e].P,__debug_mmu.tlb[0x40+0x3e].L,__debug_mmu.tlb[0x40+0x3e].P
-printf "tlb[0x3f]: %08lx %08lx %08lx %08lx\n",__debug_mmu.tlb[0x3f].L,__debug_mmu.tlb[0x3f].P,__debug_mmu.tlb[0x40+0x3f].L,__debug_mmu.tlb[0x40+0x3f].P
-end
-
-
-define _pgd
-p (pgd_t[0x40])*(pgd_t*)(__debug_mmu.damr[0x3].L)
-end
-
-define _ptd_i
-p (pte_t[0x1000])*(pte_t*)(__debug_mmu.damr[0x4].L)
-end
-
-define _ptd_d
-p (pte_t[0x1000])*(pte_t*)(__debug_mmu.damr[0x5].L)
-end
+++ /dev/null
- ====================
- DEBUGGING FR-V LINUX
- ====================
-
-
-The kernel contains a GDB stub that talks GDB remote protocol across a serial
-port. This permits GDB to single step through the kernel, set breakpoints and
-trap exceptions that happen in kernel space and interrupt execution. It also
-permits the NMI interrupt button or serial port events to jump the kernel into
-the debugger.
-
-On the CPUs that have on-chip UARTs (FR400, FR403, FR405, FR555), the
-GDB stub hijacks a serial port for its own purposes, and makes it
-generate level 15 interrupts (NMI). The kernel proper cannot see the serial
-port in question under these conditions.
-
-On the MB93091-VDK CPU boards, the GDB stub uses UART1, which would otherwise
-be /dev/ttyS1. On the MB93093-PDK, the GDB stub uses UART0. Therefore, on the
-PDK there is no externally accessible serial port and the serial port to
-which the touch screen is attached becomes /dev/ttyS0.
-
-Note that the GDB stub runs entirely within CPU debug mode, and so should not
-incur any exceptions or interrupts whilst it is active. In particular, note
-that the clock will lose time since it is implemented in software.
-
-
-==================
-KERNEL PREPARATION
-==================
-
-Firstly, a debuggable kernel must be built. To do this, unpack the kernel tree
-and copy the configuration that you wish to use to .config. Then reconfigure
-the following things on the "Kernel Hacking" tab:
-
- (*) "Include debugging information"
-
- Set this to "Y". This causes all C and Assembly files to be compiled
- to include debugging information.
-
- (*) "In-kernel GDB stub"
-
- Set this to "Y". This causes the GDB stub to be compiled into the
- kernel.
-
- (*) "Immediate activation"
-
- Set this to "Y" if you want the GDB stub to activate as soon as possible
- and wait for GDB to connect. This allows you to start tracing right from
- the beginning of start_kernel() in init/main.c.
-
- (*) "Console through GDB stub"
-
- Set this to "Y" if you wish to be able to use "console=gdb0" on the
- command line. That tells the kernel to pass system console messages to
- GDB (which then prints them on its standard output). This is useful when
- debugging the serial drivers that'd otherwise be used to pass console
- messages to the outside world.
-
-Then build as usual, download to the board and execute. Note that if
-"Immediate activation" was selected, then the kernel will wait for GDB to
-attach. If not, then the kernel will boot immediately and GDB will have to
-interrupt it or wait for an exception to occur before doing anything with
-the kernel.
-
-
-=========================
-KERNEL DEBUGGING WITH GDB
-=========================
-
-Set the serial port on the computer that's going to run GDB to the appropriate
-baud rate. Assuming the board's debug port is connected to ttyS0/COM1 on the
-computer doing the debugging:
-
- stty -F /dev/ttyS0 115200
-
-Then start GDB in the base of the kernel tree:
-
- frv-uclinux-gdb linux [uClinux]
-
-Or:
-
- frv-uclinux-gdb vmlinux [MMU linux]
-
-When the prompt appears:
-
- GNU gdb frv-031024
- Copyright 2003 Free Software Foundation, Inc.
- GDB is free software, covered by the GNU General Public License, and you are
- welcome to change it and/or distribute copies of it under certain conditions.
- Type "show copying" to see the conditions.
- There is absolutely no warranty for GDB. Type "show warranty" for details.
- This GDB was configured as "--host=i686-pc-linux-gnu --target=frv-uclinux"...
- (gdb)
-
-Attach to the board like this:
-
- (gdb) target remote /dev/ttyS0
- Remote debugging using /dev/ttyS0
- start_kernel () at init/main.c:395
- (gdb)
-
-This should show the appropriate lines from the source too. The kernel can
-then be debugged almost as if it's any other program.
-
-
-===============================
-INTERRUPTING THE RUNNING KERNEL
-===============================
-
-The kernel can be interrupted whilst it is running, causing a jump back to the
-GDB stub and the debugger:
-
- (*) Pressing Ctrl-C in GDB. This will cause GDB to try and interrupt the
- kernel by sending an RS232 BREAK over the serial line to the GDB
- stub. This will (mostly) immediately interrupt the kernel and return it
- to the debugger.
-
- (*) Pressing the NMI button on the board will also cause a jump into the
- debugger.
-
- (*) Setting a software breakpoint. This sets a break instruction at the
- desired location which the GDB stub then traps the exception for.
-
- (*) Setting a hardware breakpoint. The GDB stub is capable of using the IBAR
- and DBAR registers to assist debugging.
-
-Furthermore, the GDB stub will intercept a number of exceptions automatically
-if they are caused by kernel execution. It will also intercept BUG() macro
-invocation.
-
+++ /dev/null
- =================================
- INTERNAL KERNEL ABI FOR FR-V ARCH
- =================================
-
-The internal FRV kernel ABI is not quite the same as the userspace ABI. A
-number of the registers are used for special purposed, and the ABI is not
-consistent between modules vs core, and MMU vs no-MMU.
-
-This partly stems from the fact that FRV CPUs do not have a separate
-supervisor stack pointer, and most of them do not have any scratch
-registers, thus requiring at least one general purpose register to be
-clobbered in such an event. Also, within the kernel core, it is possible to
-simply jump or call directly between functions using a relative offset.
-This cannot be extended to modules for the displacement is likely to be too
-far. Thus in modules the address of a function to call must be calculated
-in a register and then used, requiring two extra instructions.
-
-This document has the following sections:
-
- (*) System call register ABI
- (*) CPU operating modes
- (*) Internal kernel-mode register ABI
- (*) Internal debug-mode register ABI
- (*) Virtual interrupt handling
-
-
-========================
-SYSTEM CALL REGISTER ABI
-========================
-
-When a system call is made, the following registers are effective:
-
- REGISTERS CALL RETURN
- =============== ======================= =======================
- GR7 System call number Preserved
- GR8 Syscall arg #1 Return value
- GR9-GR13 Syscall arg #2-6 Preserved
-
-
-===================
-CPU OPERATING MODES
-===================
-
-The FR-V CPU has three basic operating modes. In order of increasing
-capability:
-
- (1) User mode.
-
- Basic userspace running mode.
-
- (2) Kernel mode.
-
- Normal kernel mode. There are many additional control registers
- available that may be accessed in this mode, in addition to all the
- stuff available to user mode. This has two submodes:
-
- (a) Exceptions enabled (PSR.T == 1).
-
- Exceptions will invoke the appropriate normal kernel mode
- handler. On entry to the handler, the PSR.T bit will be cleared.
-
- (b) Exceptions disabled (PSR.T == 0).
-
- No exceptions or interrupts may happen. Any mandatory exceptions
- will cause the CPU to halt unless the CPU is told to jump into
- debug mode instead.
-
- (3) Debug mode.
-
- No exceptions may happen in this mode. Memory protection and
- management exceptions will be flagged for later consideration, but
- the exception handler won't be invoked. Debugging traps such as
- hardware breakpoints and watchpoints will be ignored. This mode is
- entered only by debugging events obtained from the other two modes.
-
- All kernel mode registers may be accessed, plus a few extra debugging
- specific registers.
-
-
-=================================
-INTERNAL KERNEL-MODE REGISTER ABI
-=================================
-
-There are a number of permanent register assignments that are set up by
-entry.S in the exception prologue. Note that there is a complete set of
-exception prologues for each of user->kernel transition and kernel->kernel
-transition. There are also user->debug and kernel->debug mode transition
-prologues.
-
-
- REGISTER FLAVOUR USE
- =============== ======= ==============================================
- GR1 Supervisor stack pointer
- GR15 Current thread info pointer
- GR16 GP-Rel base register for small data
- GR28 Current exception frame pointer (__frame)
- GR29 Current task pointer (current)
- GR30 Destroyed by kernel mode entry
- GR31 NOMMU Destroyed by debug mode entry
- GR31 MMU Destroyed by TLB miss kernel mode entry
- CCR.ICC2 Virtual interrupt disablement tracking
- CCCR.CC3 Cleared by exception prologue
- (atomic op emulation)
- SCR0 MMU See mmu-layout.txt.
- SCR1 MMU See mmu-layout.txt.
- SCR2 MMU Save for EAR0 (destroyed by icache insns
- in debug mode)
- SCR3 MMU Save for GR31 during debug exceptions
- DAMR/IAMR NOMMU Fixed memory protection layout.
- DAMR/IAMR MMU See mmu-layout.txt.
-
-
-Certain registers are also used or modified across function calls:
-
- REGISTER CALL RETURN
- =============== =============================== ======================
- GR0 Fixed Zero -
- GR2 Function call frame pointer
- GR3 Special Preserved
- GR3-GR7 - Clobbered
- GR8 Function call arg #1 Return value
- (or clobbered)
- GR9 Function call arg #2 Return value MSW
- (or clobbered)
- GR10-GR13 Function call arg #3-#6 Clobbered
- GR14 - Clobbered
- GR15-GR16 Special Preserved
- GR17-GR27 - Preserved
- GR28-GR31 Special Only accessed
- explicitly
- LR Return address after CALL Clobbered
- CCR/CCCR - Mostly Clobbered
-
-
-================================
-INTERNAL DEBUG-MODE REGISTER ABI
-================================
-
-This is the same as the kernel-mode register ABI for functions calls. The
-difference is that in debug-mode there's a different stack and a different
-exception frame. Almost all the global registers from kernel-mode
-(including the stack pointer) may be changed.
-
- REGISTER FLAVOUR USE
- =============== ======= ==============================================
- GR1 Debug stack pointer
- GR16 GP-Rel base register for small data
- GR31 Current debug exception frame pointer
- (__debug_frame)
- SCR3 MMU Saved value of GR31
-
-
-Note that debug mode is able to interfere with the kernel's emulated atomic
-ops, so it must be exceedingly careful not to do any that would interact
-with the main kernel in this regard. Hence the debug mode code (gdbstub) is
-almost completely self-contained. The only external code used is the
-sprintf family of functions.
-
-Furthermore, break.S is so complicated because single-step mode does not
-switch off on entry to an exception. That means unless manually disabled,
-single-stepping will blithely go on stepping into things like interrupts.
-See gdbstub.txt for more information.
-
-
-==========================
-VIRTUAL INTERRUPT HANDLING
-==========================
-
-Because accesses to the PSR is so slow, and to disable interrupts we have
-to access it twice (once to read and once to write), we don't actually
-disable interrupts at all if we don't have to. What we do instead is use
-the ICC2 condition code flags to note virtual disablement, such that if we
-then do take an interrupt, we note the flag, really disable interrupts, set
-another flag and resume execution at the point the interrupt happened.
-Setting condition flags as a side effect of an arithmetic or logical
-instruction is really fast. This use of the ICC2 only occurs within the
-kernel - it does not affect userspace.
-
-The flags we use are:
-
- (*) CCR.ICC2.Z [Zero flag]
-
- Set to virtually disable interrupts, clear when interrupts are
- virtually enabled. Can be modified by logical instructions without
- affecting the Carry flag.
-
- (*) CCR.ICC2.C [Carry flag]
-
- Clear to indicate hardware interrupts are really disabled, set otherwise.
-
-
-What happens is this:
-
- (1) Normal kernel-mode operation.
-
- ICC2.Z is 0, ICC2.C is 1.
-
- (2) An interrupt occurs. The exception prologue examines ICC2.Z and
- determines that nothing needs doing. This is done simply with an
- unlikely BEQ instruction.
-
- (3) The interrupts are disabled (local_irq_disable)
-
- ICC2.Z is set to 1.
-
- (4) If interrupts were then re-enabled (local_irq_enable):
-
- ICC2.Z would be set to 0.
-
- A TIHI #2 instruction (trap #2 if condition HI - Z==0 && C==0) would
- be used to trap if interrupts were now virtually enabled, but
- physically disabled - which they're not, so the trap isn't taken. The
- kernel would then be back to state (1).
-
- (5) An interrupt occurs. The exception prologue examines ICC2.Z and
- determines that the interrupt shouldn't actually have happened. It
- jumps aside, and there disabled interrupts by setting PSR.PIL to 14
- and then it clears ICC2.C.
-
- (6) If interrupts were then saved and disabled again (local_irq_save):
-
- ICC2.Z would be shifted into the save variable and masked off
- (giving a 1).
-
- ICC2.Z would then be set to 1 (thus unchanged), and ICC2.C would be
- unaffected (ie: 0).
-
- (7) If interrupts were then restored from state (6) (local_irq_restore):
-
- ICC2.Z would be set to indicate the result of XOR'ing the saved
- value (ie: 1) with 1, which gives a result of 0 - thus leaving
- ICC2.Z set.
-
- ICC2.C would remain unaffected (ie: 0).
-
- A TIHI #2 instruction would be used to again assay the current state,
- but this would do nothing as Z==1.
-
- (8) If interrupts were then enabled (local_irq_enable):
-
- ICC2.Z would be cleared. ICC2.C would be left unaffected. Both
- flags would now be 0.
-
- A TIHI #2 instruction again issued to assay the current state would
- then trap as both Z==0 [interrupts virtually enabled] and C==0
- [interrupts really disabled] would then be true.
-
- (9) The trap #2 handler would simply enable hardware interrupts
- (set PSR.PIL to 0), set ICC2.C to 1 and return.
-
-(10) Immediately upon returning, the pending interrupt would be taken.
-
-(11) The interrupt handler would take the path of actually processing the
- interrupt (ICC2.Z is clear, BEQ fails as per step (2)).
-
-(12) The interrupt handler would then set ICC2.C to 1 since hardware
- interrupts are definitely enabled - or else the kernel wouldn't be here.
-
-(13) On return from the interrupt handler, things would be back to state (1).
-
-This trap (#2) is only available in kernel mode. In user mode it will
-result in SIGILL.
+++ /dev/null
- =================================
- FR451 MMU LINUX MEMORY MANAGEMENT
- =================================
-
-============
-MMU HARDWARE
-============
-
-FR451 MMU Linux puts the MMU into EDAT mode whilst running. This means that it uses both the SAT
-registers and the DAT TLB to perform address translation.
-
-There are 8 IAMLR/IAMPR register pairs and 16 DAMLR/DAMPR register pairs for SAT mode.
-
-In DAT mode, there is also a TLB organised in cache format as 64 lines x 2 ways. Each line spans a
-16KB range of addresses, but can match a larger region.
-
-
-===========================
-MEMORY MANAGEMENT REGISTERS
-===========================
-
-Certain control registers are used by the kernel memory management routines:
-
- REGISTERS USAGE
- ====================== ==================================================
- IAMR0, DAMR0 Kernel image and data mappings
- IAMR1, DAMR1 First-chance TLB lookup mapping
- DAMR2 Page attachment for cache flush by page
- DAMR3 Current PGD mapping
- SCR0, DAMR4 Instruction TLB PGE/PTD cache
- SCR1, DAMR5 Data TLB PGE/PTD cache
- DAMR6-10 kmap_atomic() mappings
- DAMR11 I/O mapping
- CXNR mm_struct context ID
- TTBR Page directory (PGD) pointer (physical address)
-
-
-=====================
-GENERAL MEMORY LAYOUT
-=====================
-
-The physical memory layout is as follows:
-
- PHYSICAL ADDRESS CONTROLLER DEVICE
- =================== ============== =======================================
- 00000000 - BFFFFFFF SDRAM SDRAM area
- E0000000 - EFFFFFFF L-BUS CS2# VDK SLBUS/PCI window
- F0000000 - F0FFFFFF L-BUS CS5# MB93493 CSC area (DAV daughter board)
- F1000000 - F1FFFFFF L-BUS CS7# (CB70 CPU-card PCMCIA port I/O space)
- FC000000 - FC0FFFFF L-BUS CS1# VDK MB86943 config space
- FC100000 - FC1FFFFF L-BUS CS6# DM9000 NIC I/O space
- FC200000 - FC2FFFFF L-BUS CS3# MB93493 CSR area (DAV daughter board)
- FD000000 - FDFFFFFF L-BUS CS4# (CB70 CPU-card extra flash space)
- FE000000 - FEFFFFFF Internal CPU peripherals
- FF000000 - FF1FFFFF L-BUS CS0# Flash 1
- FF200000 - FF3FFFFF L-BUS CS0# Flash 2
- FFC00000 - FFC0001F L-BUS CS0# FPGA
-
-The virtual memory layout is:
-
- VIRTUAL ADDRESS PHYSICAL TRANSLATOR FLAGS SIZE OCCUPATION
- ================= ======== ============== ======= ======= ===================================
- 00004000-BFFFFFFF various TLB,xAMR1 D-N-??V 3GB Userspace
- C0000000-CFFFFFFF 00000000 xAMPR0 -L-S--V 256MB Kernel image and data
- D0000000-D7FFFFFF various TLB,xAMR1 D-NS??V 128MB vmalloc area
- D8000000-DBFFFFFF various TLB,xAMR1 D-NS??V 64MB kmap() area
- DC000000-DCFFFFFF various TLB 1MB Secondary kmap_atomic() frame
- DD000000-DD27FFFF various DAMR 160KB Primary kmap_atomic() frame
- DD040000 DAMR2/IAMR2 -L-S--V page Page cache flush attachment point
- DD080000 DAMR3 -L-SC-V page Page Directory (PGD)
- DD0C0000 DAMR4 -L-SC-V page Cached insn TLB Page Table lookup
- DD100000 DAMR5 -L-SC-V page Cached data TLB Page Table lookup
- DD140000 DAMR6 -L-S--V page kmap_atomic(KM_BOUNCE_READ)
- DD180000 DAMR7 -L-S--V page kmap_atomic(KM_SKB_SUNRPC_DATA)
- DD1C0000 DAMR8 -L-S--V page kmap_atomic(KM_SKB_DATA_SOFTIRQ)
- DD200000 DAMR9 -L-S--V page kmap_atomic(KM_USER0)
- DD240000 DAMR10 -L-S--V page kmap_atomic(KM_USER1)
- E0000000-FFFFFFFF E0000000 DAMR11 -L-SC-V 512MB I/O region
-
-IAMPR1 and DAMPR1 are used as an extension to the TLB.
-
-
-====================
-KMAP AND KMAP_ATOMIC
-====================
-
-To access pages in the page cache (which may not be directly accessible if highmem is available),
-the kernel calls kmap(), does the access and then calls kunmap(); or it calls kmap_atomic(), does
-the access and then calls kunmap_atomic().
-
-kmap() creates an attachment between an arbitrary inaccessible page and a range of virtual
-addresses by installing a PTE in a special page table. The kernel can then access this page as it
-wills. When it's finished, the kernel calls kunmap() to clear the PTE.
-
-kmap_atomic() does something slightly different. In the interests of speed, it chooses one of two
-strategies:
-
- (1) If possible, kmap_atomic() attaches the requested page to one of DAMPR5 through DAMPR10
- register pairs; and the matching kunmap_atomic() clears the DAMPR. This makes high memory
- support really fast as there's no need to flush the TLB or modify the page tables. The DAMLR
- registers being used for this are preset during boot and don't change over the lifetime of the
- process. There's a direct mapping between the first few kmap_atomic() types, DAMR number and
- virtual address slot.
-
- However, there are more kmap_atomic() types defined than there are DAMR registers available,
- so we fall back to:
-
- (2) kmap_atomic() uses a slot in the secondary frame (determined by the type parameter), and then
- locks an entry in the TLB to translate that slot to the specified page. The number of slots is
- obviously limited, and their positions are controlled such that each slot is matched by a
- different line in the TLB. kunmap() ejects the entry from the TLB.
-
-Note that the first three kmap atomic types are really just declared as placeholders. The DAMPR
-registers involved are actually modified directly.
-
-Also note that kmap() itself may sleep, kmap_atomic() may never sleep and both always succeed;
-furthermore, a driver using kmap() may sleep before calling kunmap(), but may not sleep before
-calling kunmap_atomic() if it had previously called kmap_atomic().
-
-
-===============================
-USING MORE THAN 256MB OF MEMORY
-===============================
-
-The kernel cannot access more than 256MB of memory directly. The physical layout, however, permits
-up to 3GB of SDRAM (possibly 3.25GB) to be made available. By using CONFIG_HIGHMEM, the kernel can
-allow userspace (by way of page tables) and itself (by way of kmap) to deal with the memory
-allocation.
-
-External devices can, of course, still DMA to and from all of the SDRAM, even if the kernel can't
-see it directly. The kernel translates page references into real addresses for communicating to the
-devices.
-
-
-===================
-PAGE TABLE TOPOLOGY
-===================
-
-The page tables are arranged in 2-layer format. There is a middle layer (PMD) that would be used in
-3-layer format tables but that is folded into the top layer (PGD) and so consumes no extra memory
-or processing power.
-
- +------+ PGD PMD
- | TTBR |--->+-------------------+
- +------+ | | : STE |
- | PGE0 | PME0 : STE |
- | | : STE |
- +-------------------+ Page Table
- | | : STE -------------->+--------+ +0x0000
- | PGE1 | PME0 : STE -----------+ | PTE0 |
- | | : STE -------+ | +--------+
- +-------------------+ | | | PTE63 |
- | | : STE | | +-->+--------+ +0x0100
- | PGE2 | PME0 : STE | | | PTE64 |
- | | : STE | | +--------+
- +-------------------+ | | PTE127 |
- | | : STE | +------>+--------+ +0x0200
- | PGE3 | PME0 : STE | | PTE128 |
- | | : STE | +--------+
- +-------------------+ | PTE191 |
- +--------+ +0x0300
-
-Each Page Directory (PGD) is 16KB (page size) in size and is divided into 64 entries (PGEs). Each
-PGE contains one Page Mid Directory (PMD).
-
-Each PMD is 256 bytes in size and contains a single entry (PME). Each PME holds 64 FR451 MMU
-segment table entries of 4 bytes apiece. Each PME "points to" a page table. In practice, each STE
-points to a subset of the page table, the first to PT+0x0000, the second to PT+0x0100, the third to
-PT+0x200, and so on.
-
-Each PGE and PME covers 64MB of the total virtual address space.
-
-Each Page Table (PTD) is 16KB (page size) in size, and is divided into 4096 entries (PTEs). Each
-entry can point to one 16KB page. In practice, each Linux page table is subdivided into 64 FR451
-MMU page tables. But they are all grouped together to make management easier, in particular rmap
-support is then trivial.
-
-Grouping page tables in this fashion makes PGE caching in SCR0/SCR1 more efficient because the
-coverage of the cached item is greater.
-
-Page tables for the vmalloc area are allocated at boot time and shared between all mm_structs.
-
-
-=================
-USER SPACE LAYOUT
-=================
-
-For MMU capable Linux, the regions userspace code are allowed to access are kept entirely separate
-from those dedicated to the kernel:
-
- VIRTUAL ADDRESS SIZE PURPOSE
- ================= ===== ===================================
- 00000000-00003fff 4KB NULL pointer access trap
- 00004000-01ffffff ~32MB lower mmap space (grows up)
- 02000000-021fffff 2MB Stack space (grows down from top)
- 02200000-nnnnnnnn Executable mapping
- nnnnnnnn- brk space (grows up)
- -bfffffff upper mmap space (grows down)
-
-This is so arranged so as to make best use of the 16KB page tables and the way in which PGEs/PMEs
-are cached by the TLB handler. The lower mmap space is filled first, and then the upper mmap space
-is filled.
-
-
-===============================
-GDB-STUB MMU DEBUGGING SERVICES
-===============================
-
-The gdb-stub included in this kernel provides a number of services to aid in the debugging of MMU
-related kernel services:
-
- (*) Every time the kernel stops, certain state information is dumped into __debug_mmu. This
- variable is defined in arch/frv/kernel/gdb-stub.c. Note that the gdbinit file in this
- directory has some useful macros for dealing with this.
-
- (*) __debug_mmu.tlb[]
-
- This receives the current TLB contents. This can be viewed with the _tlb GDB macro:
-
- (gdb) _tlb
- tlb[0x00]: 01000005 00718203 01000002 00718203
- tlb[0x01]: 01004002 006d4201 01004005 006d4203
- tlb[0x02]: 01008002 006d0201 01008006 00004200
- tlb[0x03]: 0100c006 007f4202 0100c002 0064c202
- tlb[0x04]: 01110005 00774201 01110002 00774201
- tlb[0x05]: 01114005 00770201 01114002 00770201
- tlb[0x06]: 01118002 0076c201 01118005 0076c201
- ...
- tlb[0x3d]: 010f4002 00790200 001f4002 0054ca02
- tlb[0x3e]: 010f8005 0078c201 010f8002 0078c201
- tlb[0x3f]: 001fc002 0056ca01 001fc005 00538a01
-
- (*) __debug_mmu.iamr[]
- (*) __debug_mmu.damr[]
-
- These receive the current IAMR and DAMR contents. These can be viewed with the _amr
- GDB macro:
-
- (gdb) _amr
- AMRx DAMR IAMR
- ==== ===================== =====================
- amr0 : L:c0000000 P:00000cb9 : L:c0000000 P:000004b9
- amr1 : L:01070005 P:006f9203 : L:0102c005 P:006a1201
- amr2 : L:d8d00000 P:00000000 : L:d8d00000 P:00000000
- amr3 : L:d8d04000 P:00534c0d : L:00000000 P:00000000
- amr4 : L:d8d08000 P:00554c0d : L:00000000 P:00000000
- amr5 : L:d8d0c000 P:00554c0d : L:00000000 P:00000000
- amr6 : L:d8d10000 P:00000000 : L:00000000 P:00000000
- amr7 : L:d8d14000 P:00000000 : L:00000000 P:00000000
- amr8 : L:d8d18000 P:00000000
- amr9 : L:d8d1c000 P:00000000
- amr10: L:d8d20000 P:00000000
- amr11: L:e0000000 P:e0000ccd
-
- (*) The current task's page directory is bound to DAMR3.
-
- This can be viewed with the _pgd GDB macro:
-
- (gdb) _pgd
- $3 = {{pge = {{ste = {0x554001, 0x554101, 0x554201, 0x554301, 0x554401,
- 0x554501, 0x554601, 0x554701, 0x554801, 0x554901, 0x554a01,
- 0x554b01, 0x554c01, 0x554d01, 0x554e01, 0x554f01, 0x555001,
- 0x555101, 0x555201, 0x555301, 0x555401, 0x555501, 0x555601,
- 0x555701, 0x555801, 0x555901, 0x555a01, 0x555b01, 0x555c01,
- 0x555d01, 0x555e01, 0x555f01, 0x556001, 0x556101, 0x556201,
- 0x556301, 0x556401, 0x556501, 0x556601, 0x556701, 0x556801,
- 0x556901, 0x556a01, 0x556b01, 0x556c01, 0x556d01, 0x556e01,
- 0x556f01, 0x557001, 0x557101, 0x557201, 0x557301, 0x557401,
- 0x557501, 0x557601, 0x557701, 0x557801, 0x557901, 0x557a01,
- 0x557b01, 0x557c01, 0x557d01, 0x557e01, 0x557f01}}}}, {pge = {{
- ste = {0x0 <repeats 64 times>}}}} <repeats 51 times>, {pge = {{ste = {
- 0x248001, 0x248101, 0x248201, 0x248301, 0x248401, 0x248501,
- 0x248601, 0x248701, 0x248801, 0x248901, 0x248a01, 0x248b01,
- 0x248c01, 0x248d01, 0x248e01, 0x248f01, 0x249001, 0x249101,
- 0x249201, 0x249301, 0x249401, 0x249501, 0x249601, 0x249701,
- 0x249801, 0x249901, 0x249a01, 0x249b01, 0x249c01, 0x249d01,
- 0x249e01, 0x249f01, 0x24a001, 0x24a101, 0x24a201, 0x24a301,
- 0x24a401, 0x24a501, 0x24a601, 0x24a701, 0x24a801, 0x24a901,
- 0x24aa01, 0x24ab01, 0x24ac01, 0x24ad01, 0x24ae01, 0x24af01,
- 0x24b001, 0x24b101, 0x24b201, 0x24b301, 0x24b401, 0x24b501,
- 0x24b601, 0x24b701, 0x24b801, 0x24b901, 0x24ba01, 0x24bb01,
- 0x24bc01, 0x24bd01, 0x24be01, 0x24bf01}}}}, {pge = {{ste = {
- 0x0 <repeats 64 times>}}}} <repeats 11 times>}
-
- (*) The PTD last used by the instruction TLB miss handler is attached to DAMR4.
- (*) The PTD last used by the data TLB miss handler is attached to DAMR5.
-
- These can be viewed with the _ptd_i and _ptd_d GDB macros:
-
- (gdb) _ptd_d
- $5 = {{pte = 0x0} <repeats 127 times>, {pte = 0x539b01}, {
- pte = 0x0} <repeats 896 times>, {pte = 0x719303}, {pte = 0x6d5303}, {
- pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {
- pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x6a1303}, {
- pte = 0x0} <repeats 12 times>, {pte = 0x709303}, {pte = 0x0}, {pte = 0x0},
- {pte = 0x6fd303}, {pte = 0x6f9303}, {pte = 0x6f5303}, {pte = 0x0}, {
- pte = 0x6ed303}, {pte = 0x531b01}, {pte = 0x50db01}, {
- pte = 0x0} <repeats 13 times>, {pte = 0x5303}, {pte = 0x7f5303}, {
- pte = 0x509b01}, {pte = 0x505b01}, {pte = 0x7c9303}, {pte = 0x7b9303}, {
- pte = 0x7b5303}, {pte = 0x7b1303}, {pte = 0x7ad303}, {pte = 0x0}, {
- pte = 0x0}, {pte = 0x7a1303}, {pte = 0x0}, {pte = 0x795303}, {pte = 0x0}, {
- pte = 0x78d303}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {pte = 0x0}, {
- pte = 0x0}, {pte = 0x775303}, {pte = 0x771303}, {pte = 0x76d303}, {
- pte = 0x0}, {pte = 0x765303}, {pte = 0x7c5303}, {pte = 0x501b01}, {
- pte = 0x4f1b01}, {pte = 0x4edb01}, {pte = 0x0}, {pte = 0x4f9b01}, {
- pte = 0x4fdb01}, {pte = 0x0} <repeats 2992 times>}
F: include/linux/fscrypt*.h
F: Documentation/filesystems/fscrypt.rst
-FUJITSU FR-V (FRV) PORT
-S: Orphan
-F: arch/frv/
-
FUJITSU LAPTOP EXTRAS
M: Jonathan Woithe <jwoithe@just42.net>
L: platform-driver-x86@vger.kernel.org
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-config FRV
- bool
- default y
- select HAVE_IDE
- select HAVE_ARCH_TRACEHOOK
- select HAVE_PERF_EVENTS
- select HAVE_UID16
- select VIRT_TO_BUS
- select GENERIC_IRQ_SHOW
- select HAVE_DEBUG_BUGVERBOSE
- select ARCH_HAVE_NMI_SAFE_CMPXCHG
- select GENERIC_CPU_DEVICES
- select ARCH_HAS_DEVMEM_IS_ALLOWED
- select ARCH_WANT_IPC_PARSE_VERSION
- select OLD_SIGSUSPEND3
- select OLD_SIGACTION
- select HAVE_DEBUG_STACKOVERFLOW
- select ARCH_NO_COHERENT_DMA_MMAP
-
-config CPU_BIG_ENDIAN
- def_bool y
-
-config ZONE_DMA
- bool
- default y
-
-config RWSEM_GENERIC_SPINLOCK
- bool
- default y
-
-config RWSEM_XCHGADD_ALGORITHM
- bool
-
-config GENERIC_HWEIGHT
- bool
- default y
-
-config GENERIC_CALIBRATE_DELAY
- bool
- default n
-
-config TIME_LOW_RES
- bool
- default y
-
-config QUICKLIST
- bool
- default y
-
-config ARCH_HAS_ILOG2_U32
- bool
- default y
-
-config ARCH_HAS_ILOG2_U64
- bool
- default y
-
-config HZ
- int
- default 1000
-
-source "init/Kconfig"
-
-source "kernel/Kconfig.freezer"
-
-
-menu "Fujitsu FR-V system setup"
-
-config MMU
- bool "MMU support"
- help
- This options switches on and off support for the FR-V MMU
- (effectively switching between vmlinux and uClinux). Not all FR-V
- CPUs support this. Currently only the FR451 has a sufficiently
- featured MMU.
-
-config FRV_OUTOFLINE_ATOMIC_OPS
- bool "Out-of-line the FRV atomic operations"
- default n
- help
- Setting this option causes the FR-V atomic operations to be mostly
- implemented out-of-line.
-
- See Documentation/frv/atomic-ops.txt for more information.
-
-config HIGHMEM
- bool "High memory support"
- depends on MMU
- default y
- help
- If you wish to use more than 256MB of memory with your MMU based
- system, you will need to select this option. The kernel can only see
- the memory between 0xC0000000 and 0xD0000000 directly... everything
- else must be kmapped.
-
- The arch is, however, capable of supporting up to 3GB of SDRAM.
-
-config HIGHPTE
- bool "Allocate page tables in highmem"
- depends on HIGHMEM
- default y
- help
- The VM uses one page of memory for each page table. For systems
- with a lot of RAM, this can be wasteful of precious low memory.
- Setting this option will put user-space page tables in high memory.
-
-source "mm/Kconfig"
-
-choice
- prompt "uClinux kernel load address"
- depends on !MMU
- default UCPAGE_OFFSET_C0000000
- help
- This option sets the base address for the uClinux kernel. The kernel
- will rearrange the SDRAM layout to start at this address, and move
- itself to start there. It must be greater than 0, and it must be
- sufficiently less than 0xE0000000 that the SDRAM does not intersect
- the I/O region.
-
- The base address must also be aligned such that the SDRAM controller
- can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
-
-config UCPAGE_OFFSET_20000000
- bool "0x20000000"
-
-config UCPAGE_OFFSET_40000000
- bool "0x40000000"
-
-config UCPAGE_OFFSET_60000000
- bool "0x60000000"
-
-config UCPAGE_OFFSET_80000000
- bool "0x80000000"
-
-config UCPAGE_OFFSET_A0000000
- bool "0xA0000000"
-
-config UCPAGE_OFFSET_C0000000
- bool "0xC0000000 (Recommended)"
-
-endchoice
-
-config PAGE_OFFSET
- hex
- default 0x20000000 if UCPAGE_OFFSET_20000000
- default 0x40000000 if UCPAGE_OFFSET_40000000
- default 0x60000000 if UCPAGE_OFFSET_60000000
- default 0x80000000 if UCPAGE_OFFSET_80000000
- default 0xA0000000 if UCPAGE_OFFSET_A0000000
- default 0xC0000000
-
-config PROTECT_KERNEL
- bool "Protect core kernel against userspace"
- depends on !MMU
- default y
- help
- Selecting this option causes the uClinux kernel to change the
- permittivity of DAMPR register covering the core kernel image to
- prevent userspace accessing the underlying memory directly.
-
-choice
- prompt "CPU Caching mode"
- default FRV_DEFL_CACHE_WBACK
- help
- This option determines the default caching mode for the kernel.
-
- Write-Back caching mode involves the all reads and writes causing
- the affected cacheline to be read into the cache first before being
- operated upon. Memory is not then updated by a write until the cache
- is filled and a cacheline needs to be displaced from the cache to
- make room. Only at that point is it written back.
-
- Write-Behind caching is similar to Write-Back caching, except that a
- write won't fetch a cacheline into the cache if there isn't already
- one there; it will write directly to memory instead.
-
- Write-Through caching only fetches cachelines from memory on a
- read. Writes always get written directly to memory. If the affected
- cacheline is also in cache, it will be updated too.
-
- The final option is to turn of caching entirely.
-
- Note that not all CPUs support Write-Behind caching. If the CPU on
- which the kernel is running doesn't, it'll fall back to Write-Back
- caching.
-
-config FRV_DEFL_CACHE_WBACK
- bool "Write-Back"
-
-config FRV_DEFL_CACHE_WBEHIND
- bool "Write-Behind"
-
-config FRV_DEFL_CACHE_WTHRU
- bool "Write-Through"
-
-config FRV_DEFL_CACHE_DISABLED
- bool "Disabled"
-
-endchoice
-
-menu "CPU core support"
-
-config CPU_FR401
- bool "Include FR401 core support"
- depends on !MMU
- default y
- help
- This enables support for the FR401, FR401A and FR403 CPUs
-
-config CPU_FR405
- bool "Include FR405 core support"
- depends on !MMU
- default y
- help
- This enables support for the FR405 CPU
-
-config CPU_FR451
- bool "Include FR451 core support"
- default y
- help
- This enables support for the FR451 CPU
-
-config CPU_FR451_COMPILE
- bool "Specifically compile for FR451 core"
- depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
- default y
- help
- This causes appropriate flags to be passed to the compiler to
- optimise for the FR451 CPU
-
-config CPU_FR551
- bool "Include FR551 core support"
- depends on !MMU
- default y
- help
- This enables support for the FR555 CPU
-
-config CPU_FR551_COMPILE
- bool "Specifically compile for FR551 core"
- depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
- default y
- help
- This causes appropriate flags to be passed to the compiler to
- optimise for the FR555 CPU
-
-config FRV_L1_CACHE_SHIFT
- int
- default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
- default "6" if CPU_FR551
-
-endmenu
-
-choice
- prompt "System support"
- default MB93091_VDK
-
-config MB93091_VDK
- bool "MB93091 CPU board with or without motherboard"
-
-config MB93093_PDK
- bool "MB93093 PDK unit"
-
-endchoice
-
-if MB93091_VDK
-choice
- prompt "Motherboard support"
- default MB93090_MB00
-
-config MB93090_MB00
- bool "Use the MB93090-MB00 motherboard"
- help
- Select this option if the MB93091 CPU board is going to be used with
- a MB93090-MB00 VDK motherboard
-
-config MB93091_NO_MB
- bool "Use standalone"
- help
- Select this option if the MB93091 CPU board is going to be used
- without a motherboard
-
-endchoice
-endif
-
-config FUJITSU_MB93493
- bool "MB93493 Multimedia chip"
- help
- Select this option if the MB93493 multimedia chip is going to be
- used.
-
-choice
- prompt "GP-Relative data support"
- default GPREL_DATA_8
- help
- This option controls what data, if any, should be placed in the GP
- relative data sections. Using this means that the compiler can
- generate accesses to the data using GR16-relative addressing which
- is faster than absolute instructions and saves space (2 instructions
- per access).
-
- However, the GPREL region is limited in size because the immediate
- value used in the load and store instructions is limited to a 12-bit
- signed number.
-
- So if the linker starts complaining that accesses to GPREL data are
- out of range, try changing this option from the default.
-
- Note that modules will always be compiled with this feature disabled
- as the module data will not be in range of the GP base address.
-
-config GPREL_DATA_8
- bool "Put data objects of up to 8 bytes into GP-REL"
-
-config GPREL_DATA_4
- bool "Put data objects of up to 4 bytes into GP-REL"
-
-config GPREL_DATA_NONE
- bool "Don't use GP-REL"
-
-endchoice
-
-config FRV_ONCPU_SERIAL
- bool "Use on-CPU serial ports"
- select SERIAL_8250
- default y
-
-config PCI
- bool "Use PCI"
- depends on MB93090_MB00
- default y
- select GENERIC_PCI_IOMAP
- help
- Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
- onboard. If you have one of these boards and you wish to use the PCI
- facilities, say Y here.
-
-config RESERVE_DMA_COHERENT
- bool "Reserve DMA coherent memory"
- depends on PCI && !MMU
- default y
- help
- Many PCI drivers require access to uncached memory for DMA device
- communications (such as is done with some Ethernet buffer rings). If
- a fully featured MMU is available, this can be done through page
- table settings, but if not, a region has to be set aside and marked
- with a special DAMPR register.
-
- Setting this option causes uClinux to set aside a portion of the
- available memory for use in this manner. The memory will then be
- unavailable for normal kernel use.
-
-source "drivers/pci/Kconfig"
-
-source "drivers/pcmcia/Kconfig"
-
-menu "Power management options"
-
-config ARCH_SUSPEND_POSSIBLE
- def_bool y
-
-source kernel/power/Kconfig
-endmenu
-
-endmenu
-
-
-menu "Executable formats"
-
-source "fs/Kconfig.binfmt"
-
-endmenu
-
-source "net/Kconfig"
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/frv/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-menu "Kernel hacking"
-
-source "lib/Kconfig.debug"
-
-config GDBSTUB
- bool "Remote GDB kernel debugging"
- depends on DEBUG_KERNEL
- select DEBUG_INFO
- select FRAME_POINTER
- help
- If you say Y here, it will be possible to remotely debug the kernel
- using gdb. This enlarges your kernel ELF image disk size by several
- megabytes and requires a machine with more than 16 MB, better 32 MB
- RAM to avoid excessive linking time. This is only useful for kernel
- hackers. If unsure, say N.
-
-choice
- prompt "GDB stub port"
- default GDBSTUB_UART1
- depends on GDBSTUB
- help
- Select the on-CPU port used for GDB-stub
-
-config GDBSTUB_UART0
- bool "/dev/ttyS0"
-
-config GDBSTUB_UART1
- bool "/dev/ttyS1"
-
-endchoice
-
-config GDBSTUB_IMMEDIATE
- bool "Break into GDB stub immediately"
- depends on GDBSTUB
- help
- If you say Y here, GDB stub will break into the program as soon as
- possible, leaving the program counter at the beginning of
- start_kernel() in init/main.c.
-
-config GDB_CONSOLE
- bool "Console output to GDB"
- depends on GDBSTUB
- help
- If you are using GDB for remote debugging over a serial port and
- would like kernel messages to be formatted into GDB $O packets so
- that GDB prints them as program output, say 'Y'.
-
-endmenu
+++ /dev/null
-#
-# frv/Makefile
-#
-# This file is included by the global makefile so that you can add your own
-# architecture-specific flags and dependencies. Remember to do have actions
-# for "archclean" and "archdep" for cleaning up and making dependencies for
-# this architecture
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (c) 2003, 2004 Red Hat Inc.
-# - Written by David Howells <dhowells@redhat.com>
-# - Derived from arch/m68knommu/Makefile,
-# Copyright (c) 1999,2001 D. Jeff Dionne <jeff@lineo.ca>,
-# Rt-Control Inc. / Lineo, Inc.
-#
-# Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uclinux.org>,
-# Kenneth Albanowski <kjahds@kjahds.com>,
-#
-# Based on arch/m68k/Makefile:
-# Copyright (C) 1994 by Hamish Macdonald
-#
-
-ifdef CONFIG_MMU
-UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
-else
-UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
-endif
-
-KBUILD_AFLAGS_MODULE += -G0 -mlong-calls
-KBUILD_CFLAGS_MODULE += -G0 -mlong-calls
-
-ifdef CONFIG_GPREL_DATA_8
-KBUILD_CFLAGS += -G8
-else
-ifdef CONFIG_GPREL_DATA_4
-KBUILD_CFLAGS += -G4
-else
-ifdef CONFIG_GPREL_DATA_NONE
-KBUILD_CFLAGS += -G0
-endif
-endif
-endif
-
-#LDFLAGS_vmlinux := -Map linkmap.txt
-
-ifdef CONFIG_GC_SECTIONS
-KBUILD_CFLAGS += -ffunction-sections -fdata-sections
-endif
-
-ifndef CONFIG_FRAME_POINTER
-KBUILD_CFLAGS += -mno-linked-fp
-endif
-
-ifdef CONFIG_CPU_FR451_COMPILE
-KBUILD_CFLAGS += -mcpu=fr450
-KBUILD_AFLAGS += -mcpu=fr450
-else
-ifdef CONFIG_CPU_FR551_COMPILE
-KBUILD_CFLAGS += -mcpu=fr550
-KBUILD_AFLAGS += -mcpu=fr550
-else
-KBUILD_CFLAGS += -mcpu=fr400
-KBUILD_AFLAGS += -mcpu=fr400
-endif
-endif
-
-# pretend the kernel is going to run on an FR400 with no media-fp unit
-# - reserve CC3 for use with atomic ops
-# - all the extra registers are dealt with only at context switch time
-KBUILD_CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media
-KBUILD_CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2
-KBUILD_AFLAGS += -mno-fdpic
-
-head-y := arch/frv/kernel/head.o
-
-core-y += arch/frv/kernel/ arch/frv/mm/
-libs-y += arch/frv/lib/
-
-core-$(CONFIG_MB93090_MB00) += arch/frv/mb93090-mb00/
-
-all: Image
-
-Image: vmlinux
- $(Q)$(MAKE) $(build)=arch/frv/boot $@
-
-archclean:
- $(Q)$(MAKE) $(clean)=arch/frv/boot
+++ /dev/null
-#
-# arch/arm/boot/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-# Copyright (C) 1995-2000 Russell King
-#
-
-targets := Image zImage bootpImage
-
-SYSTEM =$(LINUX)
-
-ZTEXTADDR = 0x02080000
-PARAMS_PHYS = 0x0207c000
-INITRD_PHYS = 0x02180000
-INITRD_VIRT = 0x02180000
-
-OBJCOPYFLAGS :=-O binary -R .note -R .note.gnu.build-id -R .comment
-
-#
-# If you don't define ZRELADDR above,
-# then it defaults to ZTEXTADDR
-#
-ifeq ($(ZRELADDR),)
-ZRELADDR = $(ZTEXTADDR)
-endif
-
-export SYSTEM ZTEXTADDR ZBSSADDR ZRELADDR INITRD_PHYS INITRD_VIRT PARAMS_PHYS
-
-Image: $(obj)/Image
-
-targets: $(obj)/Image
-
-$(obj)/Image: vmlinux FORCE
- $(OBJCOPY) $(OBJCOPYFLAGS) -S vmlinux $@
-
-#$(obj)/Image: $(CONFIGURE) $(SYSTEM)
-# $(OBJCOPY) $(OBJCOPYFLAGS) -g -S $(SYSTEM) $@
-
-bzImage: zImage
-
-zImage: $(CONFIGURE) compressed/$(LINUX)
- $(OBJCOPY) $(OBJCOPYFLAGS) -S compressed/$(LINUX) $@
-
-bootpImage: bootp/bootp
- $(OBJCOPY) $(OBJCOPYFLAGS) -S bootp/bootp $@
-
-compressed/$(LINUX): $(LINUX) dep
- @$(MAKE) -C compressed $(LINUX)
-
-bootp/bootp: zImage initrd
- @$(MAKE) -C bootp bootp
-
-initrd:
- @test "$(INITRD_VIRT)" != "" || (echo This architecture does not support INITRD; exit -1)
- @test "$(INITRD)" != "" || (echo You must specify INITRD; exit -1)
-
-#
-# installation
-#
-install: $(CONFIGURE) Image
- sh ./install.sh $(KERNELRELEASE) Image System.map "$(INSTALL_PATH)"
-
-zinstall: $(CONFIGURE) zImage
- sh ./install.sh $(KERNELRELEASE) zImage System.map "$(INSTALL_PATH)"
-
-#
-# miscellany
-#
-mrproper clean:
-# @$(MAKE) -C compressed clean
-# @$(MAKE) -C bootp clean
-
-dep:
+++ /dev/null
-CONFIG_EXPERIMENTAL=y
-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_LOG_BUF_SHIFT=14
-# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
-CONFIG_EXPERT=y
-# CONFIG_HOTPLUG is not set
-CONFIG_MMU=y
-CONFIG_FRV_OUTOFLINE_ATOMIC_OPS=y
-CONFIG_FRV_DEFL_CACHE_WTHRU=y
-CONFIG_GPREL_DATA_4=y
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_INET=y
-CONFIG_IP_PNP=y
-# CONFIG_IPV6 is not set
-# CONFIG_STANDALONE is not set
-# CONFIG_PREVENT_FIRMWARE_BUILD is not set
-CONFIG_NETDEVICES=y
-CONFIG_NET_ETHERNET=y
-CONFIG_MII=y
-CONFIG_NET_PCI=y
-CONFIG_NE2K_PCI=y
-# CONFIG_INPUT is not set
-# CONFIG_SERIO is not set
-# CONFIG_VT is not set
-CONFIG_SERIAL_8250_CONSOLE=y
-CONFIG_SERIAL_8250_NR_UARTS=1
-CONFIG_SERIAL_8250_RUNTIME_UARTS=1
-CONFIG_SERIAL_8250_EXTENDED=y
-CONFIG_SERIAL_8250_SHARE_IRQ=y
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_TMPFS=y
-CONFIG_NFS_FS=y
-CONFIG_ROOT_NFS=y
-CONFIG_DEBUG_KERNEL=y
-# CONFIG_DEBUG_BUGVERBOSE is not set
-CONFIG_DEBUG_STACKOVERFLOW=y
+++ /dev/null
-
-generic-y += device.h
-generic-y += exec.h
-generic-y += extable.h
-generic-y += fb.h
-generic-y += irq_work.h
-generic-y += mcs_spinlock.h
-generic-y += mm-arch-hooks.h
-generic-y += preempt.h
-generic-y += trace_clock.h
-generic-y += word-at-a-time.h
-generic-y += kprobes.h
+++ /dev/null
-#include <generated/asm-offsets.h>
+++ /dev/null
-/* atomic.h: atomic operation emulation for FR-V
- *
- * For an explanation of how atomic ops work in this arch, see:
- * Documentation/frv/atomic-ops.txt
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_ATOMIC_H
-#define _ASM_ATOMIC_H
-
-#include <linux/types.h>
-#include <asm/cmpxchg.h>
-#include <asm/barrier.h>
-
-#ifdef CONFIG_SMP
-#error not SMP safe
-#endif
-
-#include <asm/atomic_defs.h>
-
-/*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- *
- * We do not have SMP systems, so we don't have to deal with that.
- */
-
-#define ATOMIC_INIT(i) { (i) }
-#define atomic_read(v) READ_ONCE((v)->counter)
-#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
-
-static inline int atomic_inc_return(atomic_t *v)
-{
- return __atomic_add_return(1, &v->counter);
-}
-
-static inline int atomic_dec_return(atomic_t *v)
-{
- return __atomic_sub_return(1, &v->counter);
-}
-
-static inline int atomic_add_return(int i, atomic_t *v)
-{
- return __atomic_add_return(i, &v->counter);
-}
-
-static inline int atomic_sub_return(int i, atomic_t *v)
-{
- return __atomic_sub_return(i, &v->counter);
-}
-
-static inline int atomic_add_negative(int i, atomic_t *v)
-{
- return atomic_add_return(i, v) < 0;
-}
-
-static inline void atomic_inc(atomic_t *v)
-{
- atomic_inc_return(v);
-}
-
-static inline void atomic_dec(atomic_t *v)
-{
- atomic_dec_return(v);
-}
-
-#define atomic_sub_and_test(i,v) (atomic_sub_return((i), (v)) == 0)
-#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
-#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
-
-/*
- * 64-bit atomic ops
- */
-typedef struct {
- long long counter;
-} atomic64_t;
-
-#define ATOMIC64_INIT(i) { (i) }
-
-static inline long long atomic64_read(const atomic64_t *v)
-{
- long long counter;
-
- asm("ldd%I1 %M1,%0"
- : "=e"(counter)
- : "m"(v->counter));
-
- return counter;
-}
-
-static inline void atomic64_set(atomic64_t *v, long long i)
-{
- asm volatile("std%I0 %1,%M0"
- : "=m"(v->counter)
- : "e"(i));
-}
-
-static inline long long atomic64_inc_return(atomic64_t *v)
-{
- return __atomic64_add_return(1, &v->counter);
-}
-
-static inline long long atomic64_dec_return(atomic64_t *v)
-{
- return __atomic64_sub_return(1, &v->counter);
-}
-
-static inline long long atomic64_add_return(long long i, atomic64_t *v)
-{
- return __atomic64_add_return(i, &v->counter);
-}
-
-static inline long long atomic64_sub_return(long long i, atomic64_t *v)
-{
- return __atomic64_sub_return(i, &v->counter);
-}
-
-static inline long long atomic64_add_negative(long long i, atomic64_t *v)
-{
- return atomic64_add_return(i, v) < 0;
-}
-
-static inline void atomic64_inc(atomic64_t *v)
-{
- atomic64_inc_return(v);
-}
-
-static inline void atomic64_dec(atomic64_t *v)
-{
- atomic64_dec_return(v);
-}
-
-#define atomic64_sub_and_test(i,v) (atomic64_sub_return((i), (v)) == 0)
-#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
-#define atomic64_inc_and_test(v) (atomic64_inc_return((v)) == 0)
-#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
-
-#define atomic_cmpxchg(v, old, new) (cmpxchg(&(v)->counter, old, new))
-#define atomic_xchg(v, new) (xchg(&(v)->counter, new))
-#define atomic64_cmpxchg(v, old, new) (__cmpxchg_64(old, new, &(v)->counter))
-#define atomic64_xchg(v, new) (__xchg_64(new, &(v)->counter))
-
-static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
-{
- int c, old;
- c = atomic_read(v);
- for (;;) {
- if (unlikely(c == (u)))
- break;
- old = atomic_cmpxchg((v), c, c + (a));
- if (likely(old == c))
- break;
- c = old;
- }
- return c;
-}
-
-static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)
-{
- long long c, old;
-
- c = atomic64_read(v);
- for (;;) {
- if (unlikely(c == u))
- break;
- old = atomic64_cmpxchg(v, c, c + i);
- if (likely(old == c))
- break;
- c = old;
- }
- return c != u;
-}
-
-static inline long long atomic64_dec_if_positive(atomic64_t *v)
-{
- long long c, old, dec;
-
- c = atomic64_read(v);
- for (;;) {
- dec = c - 1;
- if (unlikely(dec < 0))
- break;
- old = atomic64_cmpxchg((v), c, dec);
- if (likely(old == c))
- break;
- c = old;
- }
- return dec;
-}
-
-#define ATOMIC_OP(op) \
-static inline int atomic_fetch_##op(int i, atomic_t *v) \
-{ \
- return __atomic32_fetch_##op(i, &v->counter); \
-} \
-static inline void atomic_##op(int i, atomic_t *v) \
-{ \
- (void)__atomic32_fetch_##op(i, &v->counter); \
-} \
- \
-static inline long long atomic64_fetch_##op(long long i, atomic64_t *v) \
-{ \
- return __atomic64_fetch_##op(i, &v->counter); \
-} \
-static inline void atomic64_##op(long long i, atomic64_t *v) \
-{ \
- (void)__atomic64_fetch_##op(i, &v->counter); \
-}
-
-ATOMIC_OP(or)
-ATOMIC_OP(and)
-ATOMIC_OP(xor)
-ATOMIC_OP(add)
-ATOMIC_OP(sub)
-
-#undef ATOMIC_OP
-
-#endif /* _ASM_ATOMIC_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-
-#include <asm/spr-regs.h>
-
-#ifdef __ATOMIC_LIB__
-
-#ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
-
-#define ATOMIC_QUALS
-#define ATOMIC_EXPORT(x) EXPORT_SYMBOL(x)
-
-#else /* !OUTOFLINE && LIB */
-
-#define ATOMIC_OP_RETURN(op)
-#define ATOMIC_FETCH_OP(op)
-
-#endif /* OUTOFLINE */
-
-#else /* !__ATOMIC_LIB__ */
-
-#define ATOMIC_EXPORT(x)
-
-#ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
-
-#define ATOMIC_OP_RETURN(op) \
-extern int __atomic_##op##_return(int i, int *v); \
-extern long long __atomic64_##op##_return(long long i, long long *v);
-
-#define ATOMIC_FETCH_OP(op) \
-extern int __atomic32_fetch_##op(int i, int *v); \
-extern long long __atomic64_fetch_##op(long long i, long long *v);
-
-#else /* !OUTOFLINE && !LIB */
-
-#define ATOMIC_QUALS static inline
-
-#endif /* OUTOFLINE */
-#endif /* __ATOMIC_LIB__ */
-
-
-/*
- * Note on the 64 bit inline asm variants...
- *
- * CSTD is a conditional instruction and needs a constrained memory reference.
- * Normally 'U' provides the correct constraints for conditional instructions
- * and this is used for the 32 bit version, however 'U' does not appear to work
- * for 64 bit values (gcc-4.9)
- *
- * The exact constraint is that conditional instructions cannot deal with an
- * immediate displacement in the memory reference, so what we do is we read the
- * address through a volatile cast into a local variable in order to insure we
- * _have_ to compute the correct address without displacement. This allows us
- * to use the regular 'm' for the memory address.
- *
- * Furthermore, the %Ln operand, which prints the low word register (r+1),
- * really only works for registers, this means we cannot allow immediate values
- * for the 64 bit versions -- like we do for the 32 bit ones.
- *
- */
-
-#ifndef ATOMIC_OP_RETURN
-#define ATOMIC_OP_RETURN(op) \
-ATOMIC_QUALS int __atomic_##op##_return(int i, int *v) \
-{ \
- int val; \
- \
- asm volatile( \
- "0: \n" \
- " orcc gr0,gr0,gr0,icc3 \n" \
- " ckeq icc3,cc7 \n" \
- " ld.p %M0,%1 \n" \
- " orcr cc7,cc7,cc3 \n" \
- " "#op"%I2 %1,%2,%1 \n" \
- " cst.p %1,%M0 ,cc3,#1 \n" \
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" \
- " beq icc3,#0,0b \n" \
- : "+U"(*v), "=&r"(val) \
- : "NPr"(i) \
- : "memory", "cc7", "cc3", "icc3" \
- ); \
- \
- return val; \
-} \
-ATOMIC_EXPORT(__atomic_##op##_return); \
- \
-ATOMIC_QUALS long long __atomic64_##op##_return(long long i, long long *v) \
-{ \
- long long *__v = READ_ONCE(v); \
- long long val; \
- \
- asm volatile( \
- "0: \n" \
- " orcc gr0,gr0,gr0,icc3 \n" \
- " ckeq icc3,cc7 \n" \
- " ldd.p %M0,%1 \n" \
- " orcr cc7,cc7,cc3 \n" \
- " "#op"cc %L1,%L2,%L1,icc0 \n" \
- " "#op"x %1,%2,%1,icc0 \n" \
- " cstd.p %1,%M0 ,cc3,#1 \n" \
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" \
- " beq icc3,#0,0b \n" \
- : "+m"(*__v), "=&e"(val) \
- : "e"(i) \
- : "memory", "cc7", "cc3", "icc0", "icc3" \
- ); \
- \
- return val; \
-} \
-ATOMIC_EXPORT(__atomic64_##op##_return);
-#endif
-
-#ifndef ATOMIC_FETCH_OP
-#define ATOMIC_FETCH_OP(op) \
-ATOMIC_QUALS int __atomic32_fetch_##op(int i, int *v) \
-{ \
- int old, tmp; \
- \
- asm volatile( \
- "0: \n" \
- " orcc gr0,gr0,gr0,icc3 \n" \
- " ckeq icc3,cc7 \n" \
- " ld.p %M0,%1 \n" \
- " orcr cc7,cc7,cc3 \n" \
- " "#op"%I3 %1,%3,%2 \n" \
- " cst.p %2,%M0 ,cc3,#1 \n" \
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" \
- " beq icc3,#0,0b \n" \
- : "+U"(*v), "=&r"(old), "=r"(tmp) \
- : "NPr"(i) \
- : "memory", "cc7", "cc3", "icc3" \
- ); \
- \
- return old; \
-} \
-ATOMIC_EXPORT(__atomic32_fetch_##op); \
- \
-ATOMIC_QUALS long long __atomic64_fetch_##op(long long i, long long *v) \
-{ \
- long long *__v = READ_ONCE(v); \
- long long old, tmp; \
- \
- asm volatile( \
- "0: \n" \
- " orcc gr0,gr0,gr0,icc3 \n" \
- " ckeq icc3,cc7 \n" \
- " ldd.p %M0,%1 \n" \
- " orcr cc7,cc7,cc3 \n" \
- " "#op" %L1,%L3,%L2 \n" \
- " "#op" %1,%3,%2 \n" \
- " cstd.p %2,%M0 ,cc3,#1 \n" \
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" \
- " beq icc3,#0,0b \n" \
- : "+m"(*__v), "=&e"(old), "=e"(tmp) \
- : "e"(i) \
- : "memory", "cc7", "cc3", "icc3" \
- ); \
- \
- return old; \
-} \
-ATOMIC_EXPORT(__atomic64_fetch_##op);
-#endif
-
-ATOMIC_FETCH_OP(or)
-ATOMIC_FETCH_OP(and)
-ATOMIC_FETCH_OP(xor)
-ATOMIC_FETCH_OP(add)
-ATOMIC_FETCH_OP(sub)
-
-ATOMIC_OP_RETURN(add)
-ATOMIC_OP_RETURN(sub)
-
-#undef ATOMIC_FETCH_OP
-#undef ATOMIC_OP_RETURN
-#undef ATOMIC_QUALS
-#undef ATOMIC_EXPORT
+++ /dev/null
-/* ax88796.h: access points to the driver for the AX88796 NE2000 clone
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_AX88796_H
-#define _ASM_AX88796_H
-
-#include <asm/mb-regs.h>
-
-#define AX88796_IOADDR (__region_CS1 + 0x200)
-#define AX88796_IRQ IRQ_CPU_EXTERNAL7
-#define AX88796_FULL_DUPLEX 0 /* force full duplex */
-#define AX88796_BUS_INFO "CS1#+0x200" /* bus info for ethtool */
-
-#endif /* _ASM_AX88796_H */
+++ /dev/null
-/* FR-V CPU memory barrier definitions
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_BARRIER_H
-#define _ASM_BARRIER_H
-
-#define nop() asm volatile ("nop"::)
-
-#define mb() asm volatile ("membar" : : :"memory")
-#define rmb() asm volatile ("membar" : : :"memory")
-#define wmb() asm volatile ("membar" : : :"memory")
-
-#include <asm-generic/barrier.h>
-
-#endif /* _ASM_BARRIER_H */
+++ /dev/null
-/* bitops.h: bit operations for the Fujitsu FR-V CPUs
- *
- * For an explanation of how atomic ops work in this arch, see:
- * Documentation/frv/atomic-ops.txt
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_BITOPS_H
-#define _ASM_BITOPS_H
-
-#include <linux/compiler.h>
-#include <asm/byteorder.h>
-
-#ifdef __KERNEL__
-
-#ifndef _LINUX_BITOPS_H
-#error only <linux/bitops.h> can be included directly
-#endif
-
-#include <asm-generic/bitops/ffz.h>
-
-#include <asm/atomic.h>
-
-static inline int test_and_clear_bit(unsigned long nr, volatile void *addr)
-{
- unsigned int *ptr = (void *)addr;
- unsigned int mask = 1UL << (nr & 31);
- ptr += nr >> 5;
- return (__atomic32_fetch_and(~mask, ptr) & mask) != 0;
-}
-
-static inline int test_and_set_bit(unsigned long nr, volatile void *addr)
-{
- unsigned int *ptr = (void *)addr;
- unsigned int mask = 1UL << (nr & 31);
- ptr += nr >> 5;
- return (__atomic32_fetch_or(mask, ptr) & mask) != 0;
-}
-
-static inline int test_and_change_bit(unsigned long nr, volatile void *addr)
-{
- unsigned int *ptr = (void *)addr;
- unsigned int mask = 1UL << (nr & 31);
- ptr += nr >> 5;
- return (__atomic32_fetch_xor(mask, ptr) & mask) != 0;
-}
-
-static inline void clear_bit(unsigned long nr, volatile void *addr)
-{
- test_and_clear_bit(nr, addr);
-}
-
-static inline void set_bit(unsigned long nr, volatile void *addr)
-{
- test_and_set_bit(nr, addr);
-}
-
-static inline void change_bit(unsigned long nr, volatile void *addr)
-{
- test_and_change_bit(nr, addr);
-}
-
-static inline void __clear_bit(unsigned long nr, volatile void *addr)
-{
- volatile unsigned long *a = addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 31);
- *a &= ~mask;
-}
-
-static inline void __set_bit(unsigned long nr, volatile void *addr)
-{
- volatile unsigned long *a = addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 31);
- *a |= mask;
-}
-
-static inline void __change_bit(unsigned long nr, volatile void *addr)
-{
- volatile unsigned long *a = addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 31);
- *a ^= mask;
-}
-
-static inline int __test_and_clear_bit(unsigned long nr, volatile void *addr)
-{
- volatile unsigned long *a = addr;
- int mask, retval;
-
- a += nr >> 5;
- mask = 1 << (nr & 31);
- retval = (mask & *a) != 0;
- *a &= ~mask;
- return retval;
-}
-
-static inline int __test_and_set_bit(unsigned long nr, volatile void *addr)
-{
- volatile unsigned long *a = addr;
- int mask, retval;
-
- a += nr >> 5;
- mask = 1 << (nr & 31);
- retval = (mask & *a) != 0;
- *a |= mask;
- return retval;
-}
-
-static inline int __test_and_change_bit(unsigned long nr, volatile void *addr)
-{
- volatile unsigned long *a = addr;
- int mask, retval;
-
- a += nr >> 5;
- mask = 1 << (nr & 31);
- retval = (mask & *a) != 0;
- *a ^= mask;
- return retval;
-}
-
-/*
- * This routine doesn't need to be atomic.
- */
-static inline int
-__constant_test_bit(unsigned long nr, const volatile void *addr)
-{
- return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0;
-}
-
-static inline int __test_bit(unsigned long nr, const volatile void *addr)
-{
- int * a = (int *) addr;
- int mask;
-
- a += nr >> 5;
- mask = 1 << (nr & 0x1f);
- return ((mask & *a) != 0);
-}
-
-#define test_bit(nr,addr) \
-(__builtin_constant_p(nr) ? \
- __constant_test_bit((nr),(addr)) : \
- __test_bit((nr),(addr)))
-
-#include <asm-generic/bitops/find.h>
-
-/**
- * fls - find last bit set
- * @x: the word to search
- *
- * This is defined the same way as ffs:
- * - return 32..1 to indicate bit 31..0 most significant bit set
- * - return 0 to indicate no bits set
- */
-#define fls(x) \
-({ \
- int bit; \
- \
- asm(" subcc %1,gr0,gr0,icc0 \n" \
- " ckne icc0,cc4 \n" \
- " cscan.p %1,gr0,%0 ,cc4,#1 \n" \
- " csub %0,%0,%0 ,cc4,#0 \n" \
- " csub %2,%0,%0 ,cc4,#1 \n" \
- : "=&r"(bit) \
- : "r"(x), "r"(32) \
- : "icc0", "cc4" \
- ); \
- \
- bit; \
-})
-
-/**
- * fls64 - find last bit set in a 64-bit value
- * @n: the value to search
- *
- * This is defined the same way as ffs:
- * - return 64..1 to indicate bit 63..0 most significant bit set
- * - return 0 to indicate no bits set
- */
-static inline __attribute__((const))
-int fls64(u64 n)
-{
- union {
- u64 ll;
- struct { u32 h, l; };
- } _;
- int bit, x, y;
-
- _.ll = n;
-
- asm(" subcc.p %3,gr0,gr0,icc0 \n"
- " subcc %4,gr0,gr0,icc1 \n"
- " ckne icc0,cc4 \n"
- " ckne icc1,cc5 \n"
- " norcr cc4,cc5,cc6 \n"
- " csub.p %0,%0,%0 ,cc6,1 \n"
- " orcr cc5,cc4,cc4 \n"
- " andcr cc4,cc5,cc4 \n"
- " cscan.p %3,gr0,%0 ,cc4,0 \n"
- " setlos #64,%1 \n"
- " cscan.p %4,gr0,%0 ,cc4,1 \n"
- " setlos #32,%2 \n"
- " csub.p %1,%0,%0 ,cc4,0 \n"
- " csub %2,%0,%0 ,cc4,1 \n"
- : "=&r"(bit), "=r"(x), "=r"(y)
- : "0r"(_.h), "r"(_.l)
- : "icc0", "icc1", "cc4", "cc5", "cc6"
- );
- return bit;
-
-}
-
-/**
- * ffs - find first bit set
- * @x: the word to search
- *
- * - return 32..1 to indicate bit 31..0 most least significant bit set
- * - return 0 to indicate no bits set
- */
-static inline __attribute__((const))
-int ffs(int x)
-{
- /* Note: (x & -x) gives us a mask that is the least significant
- * (rightmost) 1-bit of the value in x.
- */
- return fls(x & -x);
-}
-
-/**
- * __ffs - find first bit set
- * @x: the word to search
- *
- * - return 31..0 to indicate bit 31..0 most least significant bit set
- * - if no bits are set in x, the result is undefined
- */
-static inline __attribute__((const))
-int __ffs(unsigned long x)
-{
- int bit;
- asm("scan %1,gr0,%0" : "=r"(bit) : "r"(x & -x));
- return 31 - bit;
-}
-
-/**
- * __fls - find last (most-significant) set bit in a long word
- * @word: the word to search
- *
- * Undefined if no set bit exists, so code should check against 0 first.
- */
-static inline unsigned long __fls(unsigned long word)
-{
- unsigned long bit;
- asm("scan %1,gr0,%0" : "=r"(bit) : "r"(word));
- return bit;
-}
-
-/*
- * special slimline version of fls() for calculating ilog2_u32()
- * - note: no protection against n == 0
- */
-#define ARCH_HAS_ILOG2_U32
-static inline __attribute__((const))
-int __ilog2_u32(u32 n)
-{
- int bit;
- asm("scan %1,gr0,%0" : "=r"(bit) : "r"(n));
- return 31 - bit;
-}
-
-/*
- * special slimline version of fls64() for calculating ilog2_u64()
- * - note: no protection against n == 0
- */
-#define ARCH_HAS_ILOG2_U64
-static inline __attribute__((const))
-int __ilog2_u64(u64 n)
-{
- union {
- u64 ll;
- struct { u32 h, l; };
- } _;
- int bit, x, y;
-
- _.ll = n;
-
- asm(" subcc %3,gr0,gr0,icc0 \n"
- " ckeq icc0,cc4 \n"
- " cscan.p %3,gr0,%0 ,cc4,0 \n"
- " setlos #63,%1 \n"
- " cscan.p %4,gr0,%0 ,cc4,1 \n"
- " setlos #31,%2 \n"
- " csub.p %1,%0,%0 ,cc4,0 \n"
- " csub %2,%0,%0 ,cc4,1 \n"
- : "=&r"(bit), "=r"(x), "=r"(y)
- : "0r"(_.h), "r"(_.l)
- : "icc0", "cc4"
- );
- return bit;
-}
-
-#include <asm-generic/bitops/sched.h>
-#include <asm-generic/bitops/hweight.h>
-#include <asm-generic/bitops/lock.h>
-
-#include <asm-generic/bitops/le.h>
-
-#include <asm-generic/bitops/ext2-atomic-setbit.h>
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_BITOPS_H */
+++ /dev/null
-/* bug.h: FRV bug trapping
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_BUG_H
-#define _ASM_BUG_H
-
-#include <linux/linkage.h>
-
-#ifdef CONFIG_BUG
-/*
- * Tell the user there is some problem.
- */
-extern asmlinkage void __debug_bug_trap(int signr);
-
-#ifdef CONFIG_NO_KERNEL_MSG
-#define _debug_bug_printk()
-#else
-extern void __debug_bug_printk(const char *file, unsigned line);
-#define _debug_bug_printk() __debug_bug_printk(__FILE__, __LINE__)
-#endif
-
-#define _debug_bug_trap(signr) \
-do { \
- __debug_bug_trap(signr); \
- asm volatile("nop"); \
-} while(1)
-
-#define HAVE_ARCH_BUG
-#define BUG() \
-do { \
- _debug_bug_printk(); \
- _debug_bug_trap(6 /*SIGABRT*/); \
-} while (0)
-
-#ifdef CONFIG_GDBSTUB
-#define HAVE_ARCH_KGDB_RAISE
-#define kgdb_raise(signr) do { _debug_bug_trap(signr); } while(0)
-
-#define HAVE_ARCH_KGDB_BAD_PAGE
-#define kgdb_bad_page(page) do { kgdb_raise(SIGABRT); } while(0)
-#endif
-
-#endif /* CONFIG_BUG */
-
-#include <asm-generic/bug.h>
-
-extern void die_if_kernel(const char *, ...) __attribute__((format(printf, 1, 2)));
-
-#endif
+++ /dev/null
-/* bugs.h: arch bug checking entry
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-static inline void check_bugs(void)
-{
-}
+++ /dev/null
-/* busctl-regs.h: FR400-series CPU bus controller registers
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_BUSCTL_REGS_H
-#define _ASM_BUSCTL_REGS_H
-
-/* bus controller registers */
-#define __get_LGCR() ({ *(volatile unsigned long *)(0xfe000010); })
-#define __get_LMAICR() ({ *(volatile unsigned long *)(0xfe000030); })
-#define __get_LEMBR() ({ *(volatile unsigned long *)(0xfe000040); })
-#define __get_LEMAM() ({ *(volatile unsigned long *)(0xfe000048); })
-#define __get_LCR(R) ({ *(volatile unsigned long *)(0xfe000100 + 8*(R)); })
-#define __get_LSBR(R) ({ *(volatile unsigned long *)(0xfe000c00 + 8*(R)); })
-#define __get_LSAM(R) ({ *(volatile unsigned long *)(0xfe000d00 + 8*(R)); })
-
-#define __set_LGCR(V) do { *(volatile unsigned long *)(0xfe000010) = (V); } while(0)
-#define __set_LMAICR(V) do { *(volatile unsigned long *)(0xfe000030) = (V); } while(0)
-#define __set_LEMBR(V) do { *(volatile unsigned long *)(0xfe000040) = (V); } while(0)
-#define __set_LEMAM(V) do { *(volatile unsigned long *)(0xfe000048) = (V); } while(0)
-#define __set_LCR(R,V) do { *(volatile unsigned long *)(0xfe000100 + 8*(R)) = (V); } while(0)
-#define __set_LSBR(R,V) do { *(volatile unsigned long *)(0xfe000c00 + 8*(R)) = (V); } while(0)
-#define __set_LSAM(R,V) do { *(volatile unsigned long *)(0xfe000d00 + 8*(R)) = (V); } while(0)
-
-/* FR401 SDRAM controller registers */
-#define __get_DBR(R) ({ *(volatile unsigned long *)(0xfe000e00 + 8*(R)); })
-#define __get_DAM(R) ({ *(volatile unsigned long *)(0xfe000f00 + 8*(R)); })
-
-/* FR551 SDRAM controller registers */
-#define __get_DARS(R) ({ *(volatile unsigned long *)(0xfeff0100 + 8*(R)); })
-#define __get_DAMK(R) ({ *(volatile unsigned long *)(0xfeff0110 + 8*(R)); })
-
-
-#endif /* _ASM_BUSCTL_REGS_H */
+++ /dev/null
-/* cache.h: FRV cache definitions
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef __ASM_CACHE_H
-#define __ASM_CACHE_H
-
-
-/* bytes per L1 cache line */
-#define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT)
-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
-
-#define __cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
-#define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
-
-#endif
+++ /dev/null
-/* cacheflush.h: FRV cache flushing routines
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_CACHEFLUSH_H
-#define _ASM_CACHEFLUSH_H
-
-/* Keep includes the same across arches. */
-#include <linux/mm.h>
-
-/*
- * virtually-indexed cache management (our cache is physically indexed)
- */
-#define flush_cache_all() do {} while(0)
-#define flush_cache_mm(mm) do {} while(0)
-#define flush_cache_dup_mm(mm) do {} while(0)
-#define flush_cache_range(mm, start, end) do {} while(0)
-#define flush_cache_page(vma, vmaddr, pfn) do {} while(0)
-#define flush_cache_vmap(start, end) do {} while(0)
-#define flush_cache_vunmap(start, end) do {} while(0)
-#define flush_dcache_mmap_lock(mapping) do {} while(0)
-#define flush_dcache_mmap_unlock(mapping) do {} while(0)
-
-/*
- * physically-indexed cache management
- * - see arch/frv/lib/cache.S
- */
-extern void frv_dcache_writeback(unsigned long start, unsigned long size);
-extern void frv_cache_invalidate(unsigned long start, unsigned long size);
-extern void frv_icache_invalidate(unsigned long start, unsigned long size);
-extern void frv_cache_wback_inv(unsigned long start, unsigned long size);
-
-static inline void __flush_cache_all(void)
-{
- asm volatile(" dcef @(gr0,gr0),#1 \n"
- " icei @(gr0,gr0),#1 \n"
- " membar \n"
- : : : "memory"
- );
-}
-
-/* dcache/icache coherency... */
-#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
-#ifdef CONFIG_MMU
-extern void flush_dcache_page(struct page *page);
-#else
-static inline void flush_dcache_page(struct page *page)
-{
- unsigned long addr = page_to_phys(page);
- frv_dcache_writeback(addr, addr + PAGE_SIZE);
-}
-#endif
-
-static inline void flush_page_to_ram(struct page *page)
-{
- flush_dcache_page(page);
-}
-
-static inline void flush_icache(void)
-{
- __flush_cache_all();
-}
-
-static inline void flush_icache_range(unsigned long start, unsigned long end)
-{
- frv_cache_wback_inv(start, end);
-}
-
-#ifdef CONFIG_MMU
-extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
- unsigned long start, unsigned long len);
-#else
-static inline void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
- unsigned long start, unsigned long len)
-{
- frv_cache_wback_inv(start, start + len);
-}
-#endif
-
-static inline void flush_icache_page(struct vm_area_struct *vma, struct page *page)
-{
- flush_icache_user_range(vma, page, page_to_phys(page), PAGE_SIZE);
-}
-
-/*
- * permit ptrace to access another process's address space through the icache
- * and the dcache
- */
-#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
-do { \
- memcpy((dst), (src), (len)); \
- flush_icache_user_range((vma), (page), (vaddr), (len)); \
-} while(0)
-
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
- memcpy((dst), (src), (len))
-
-#endif /* _ASM_CACHEFLUSH_H */
+++ /dev/null
-/* checksum.h: FRV checksumming
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_CHECKSUM_H
-#define _ASM_CHECKSUM_H
-
-#include <linux/in6.h>
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-__wsum csum_partial(const void *buff, int len, __wsum sum);
-
-/*
- * the same as csum_partial, but copies from src while it
- * checksums
- *
- * here even more important to align src and dst on a 32-bit (or even
- * better 64-bit) boundary
- */
-__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
-
-/*
- * the same as csum_partial_copy, but copies from user space.
- *
- * here even more important to align src and dst on a 32-bit (or even
- * better 64-bit) boundary
- */
-extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
- int len, __wsum sum, int *csum_err);
-
-/*
- * This is a version of ip_compute_csum() optimized for IP headers,
- * which always checksum on 4 octet boundaries.
- *
- */
-static inline
-__sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
- unsigned int tmp, inc, sum = 0;
-
- asm(" addcc gr0,gr0,gr0,icc0\n" /* clear icc0.C */
- " subi %1,#4,%1 \n"
- "0: \n"
- " ldu.p @(%1,%3),%4 \n"
- " subicc %2,#1,%2,icc1 \n"
- " addxcc.p %4,%0,%0,icc0 \n"
- " bhi icc1,#2,0b \n"
-
- /* fold the 33-bit result into 16-bits */
- " addxcc gr0,%0,%0,icc0 \n"
- " srli %0,#16,%1 \n"
- " sethi #0,%0 \n"
- " add %1,%0,%0 \n"
- " srli %0,#16,%1 \n"
- " add %1,%0,%0 \n"
-
- : "=r" (sum), "=r" (iph), "=r" (ihl), "=r" (inc), "=&r"(tmp)
- : "0" (sum), "1" (iph), "2" (ihl), "3" (4),
- "m"(*(volatile struct { int _[100]; } *)iph)
- : "icc0", "icc1", "memory"
- );
-
- return (__force __sum16)~sum;
-}
-
-/*
- * Fold a partial checksum
- */
-static inline __sum16 csum_fold(__wsum sum)
-{
- unsigned int tmp;
-
- asm(" srli %0,#16,%1 \n"
- " sethi #0,%0 \n"
- " add %1,%0,%0 \n"
- " srli %0,#16,%1 \n"
- " add %1,%0,%0 \n"
- : "=r"(sum), "=&r"(tmp)
- : "0"(sum)
- );
-
- return (__force __sum16)~sum;
-}
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-static inline __wsum
-csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
- __u8 proto, __wsum sum)
-{
- asm(" addcc %1,%0,%0,icc0 \n"
- " addxcc %2,%0,%0,icc0 \n"
- " addxcc %3,%0,%0,icc0 \n"
- " addxcc gr0,%0,%0,icc0 \n"
- : "=r" (sum)
- : "r" (daddr), "r" (saddr), "r" (len + proto), "0"(sum)
- : "icc0"
- );
- return sum;
-}
-
-static inline __sum16
-csum_tcpudp_magic(__be32 saddr, __be32 daddr, __u32 len,
- __u8 proto, __wsum sum)
-{
- return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
-}
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-extern __sum16 ip_compute_csum(const void *buff, int len);
-
-#define _HAVE_ARCH_IPV6_CSUM
-static inline __sum16
-csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
- __u32 len, __u8 proto, __wsum sum)
-{
- unsigned long tmp, tmp2;
-
- asm(" addcc %2,%0,%0,icc0 \n"
-
- /* add up the source addr */
- " ldi @(%3,0),%1 \n"
- " addxcc %1,%0,%0,icc0 \n"
- " ldi @(%3,4),%2 \n"
- " addxcc %2,%0,%0,icc0 \n"
- " ldi @(%3,8),%1 \n"
- " addxcc %1,%0,%0,icc0 \n"
- " ldi @(%3,12),%2 \n"
- " addxcc %2,%0,%0,icc0 \n"
-
- /* add up the dest addr */
- " ldi @(%4,0),%1 \n"
- " addxcc %1,%0,%0,icc0 \n"
- " ldi @(%4,4),%2 \n"
- " addxcc %2,%0,%0,icc0 \n"
- " ldi @(%4,8),%1 \n"
- " addxcc %1,%0,%0,icc0 \n"
- " ldi @(%4,12),%2 \n"
- " addxcc %2,%0,%0,icc0 \n"
-
- /* fold the 33-bit result into 16-bits */
- " addxcc gr0,%0,%0,icc0 \n"
- " srli %0,#16,%1 \n"
- " sethi #0,%0 \n"
- " add %1,%0,%0 \n"
- " srli %0,#16,%1 \n"
- " add %1,%0,%0 \n"
-
- : "=r" (sum), "=&r" (tmp), "=r" (tmp2)
- : "r" (saddr), "r" (daddr), "0" (sum), "2" (len + proto)
- : "icc0"
- );
-
- return (__force __sum16)~sum;
-}
-
-#endif /* _ASM_CHECKSUM_H */
+++ /dev/null
-/* xchg and cmpxchg operation emulation for FR-V
- *
- * For an explanation of how atomic ops work in this arch, see:
- * Documentation/frv/atomic-ops.txt
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_CMPXCHG_H
-#define _ASM_CMPXCHG_H
-
-#include <linux/types.h>
-
-/*****************************************************************************/
-/*
- * exchange value with memory
- */
-extern uint64_t __xchg_64(uint64_t i, volatile void *v);
-
-#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
-
-#define xchg(ptr, x) \
-({ \
- __typeof__(ptr) __xg_ptr = (ptr); \
- __typeof__(*(ptr)) __xg_orig; \
- \
- switch (sizeof(__xg_orig)) { \
- case 4: \
- asm volatile( \
- "swap%I0 %M0,%1" \
- : "+m"(*__xg_ptr), "=r"(__xg_orig) \
- : "1"(x) \
- : "memory" \
- ); \
- break; \
- \
- default: \
- __xg_orig = (__typeof__(__xg_orig))0; \
- asm volatile("break"); \
- break; \
- } \
- \
- __xg_orig; \
-})
-
-#else
-
-extern uint32_t __xchg_32(uint32_t i, volatile void *v);
-
-#define xchg(ptr, x) \
-({ \
- __typeof__(ptr) __xg_ptr = (ptr); \
- __typeof__(*(ptr)) __xg_orig; \
- \
- switch (sizeof(__xg_orig)) { \
- case 4: __xg_orig = (__typeof__(*(ptr))) __xchg_32((uint32_t) x, __xg_ptr); break; \
- default: \
- __xg_orig = (__typeof__(__xg_orig))0; \
- asm volatile("break"); \
- break; \
- } \
- __xg_orig; \
-})
-
-#endif
-
-/*****************************************************************************/
-/*
- * compare and conditionally exchange value with memory
- * - if (*ptr == test) then orig = *ptr; *ptr = test;
- * - if (*ptr != test) then orig = *ptr;
- */
-extern uint64_t __cmpxchg_64(uint64_t test, uint64_t new, volatile uint64_t *v);
-#define cmpxchg64(p, o, n) __cmpxchg_64((o), (n), (p))
-
-#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
-
-#define cmpxchg(ptr, test, new) \
-({ \
- __typeof__(ptr) __xg_ptr = (ptr); \
- __typeof__(*(ptr)) __xg_orig, __xg_tmp; \
- __typeof__(*(ptr)) __xg_test = (test); \
- __typeof__(*(ptr)) __xg_new = (new); \
- \
- switch (sizeof(__xg_orig)) { \
- case 4: \
- asm volatile( \
- "0: \n" \
- " orcc gr0,gr0,gr0,icc3 \n" \
- " ckeq icc3,cc7 \n" \
- " ld.p %M0,%1 \n" \
- " orcr cc7,cc7,cc3 \n" \
- " sub%I4cc %1,%4,%2,icc0 \n" \
- " bne icc0,#0,1f \n" \
- " cst.p %3,%M0 ,cc3,#1 \n" \
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" \
- " beq icc3,#0,0b \n" \
- "1: \n" \
- : "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp) \
- : "r"(__xg_new), "NPr"(__xg_test) \
- : "memory", "cc7", "cc3", "icc3", "icc0" \
- ); \
- break; \
- \
- default: \
- __xg_orig = (__typeof__(__xg_orig))0; \
- asm volatile("break"); \
- break; \
- } \
- \
- __xg_orig; \
-})
-
-#else
-
-extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
-
-#define cmpxchg(ptr, test, new) \
-({ \
- __typeof__(ptr) __xg_ptr = (ptr); \
- __typeof__(*(ptr)) __xg_orig; \
- __typeof__(*(ptr)) __xg_test = (test); \
- __typeof__(*(ptr)) __xg_new = (new); \
- \
- switch (sizeof(__xg_orig)) { \
- case 4: __xg_orig = (__force __typeof__(*ptr)) \
- __cmpxchg_32((__force uint32_t *)__xg_ptr, \
- (__force uint32_t)__xg_test, \
- (__force uint32_t)__xg_new); break; \
- default: \
- __xg_orig = (__typeof__(__xg_orig))0; \
- asm volatile("break"); \
- break; \
- } \
- \
- __xg_orig; \
-})
-
-#endif
-
-#include <asm-generic/cmpxchg-local.h>
-
-static inline unsigned long __cmpxchg_local(volatile void *ptr,
- unsigned long old,
- unsigned long new, int size)
-{
- switch (size) {
- case 4:
- return cmpxchg((unsigned long *)ptr, old, new);
- default:
- return __cmpxchg_local_generic(ptr, old, new, size);
- }
-
- return old;
-}
-
-/*
- * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
- * them available.
- */
-#define cmpxchg_local(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
- (unsigned long)(n), sizeof(*(ptr))))
-#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-
-#endif /* _ASM_CMPXCHG_H */
+++ /dev/null
-/* cpu-irqs.h: on-CPU peripheral irqs
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_CPU_IRQS_H
-#define _ASM_CPU_IRQS_H
-
-#ifndef __ASSEMBLY__
-
-/* IRQ to level mappings */
-#define IRQ_GDBSTUB_LEVEL 15
-#define IRQ_UART_LEVEL 13
-
-#ifdef CONFIG_GDBSTUB_UART0
-#define IRQ_UART0_LEVEL IRQ_GDBSTUB_LEVEL
-#else
-#define IRQ_UART0_LEVEL IRQ_UART_LEVEL
-#endif
-
-#ifdef CONFIG_GDBSTUB_UART1
-#define IRQ_UART1_LEVEL IRQ_GDBSTUB_LEVEL
-#else
-#define IRQ_UART1_LEVEL IRQ_UART_LEVEL
-#endif
-
-#define IRQ_DMA0_LEVEL 14
-#define IRQ_DMA1_LEVEL 14
-#define IRQ_DMA2_LEVEL 14
-#define IRQ_DMA3_LEVEL 14
-#define IRQ_DMA4_LEVEL 14
-#define IRQ_DMA5_LEVEL 14
-#define IRQ_DMA6_LEVEL 14
-#define IRQ_DMA7_LEVEL 14
-
-#define IRQ_TIMER0_LEVEL 12
-#define IRQ_TIMER1_LEVEL 11
-#define IRQ_TIMER2_LEVEL 10
-
-#define IRQ_XIRQ0_LEVEL 1
-#define IRQ_XIRQ1_LEVEL 2
-#define IRQ_XIRQ2_LEVEL 3
-#define IRQ_XIRQ3_LEVEL 4
-#define IRQ_XIRQ4_LEVEL 5
-#define IRQ_XIRQ5_LEVEL 6
-#define IRQ_XIRQ6_LEVEL 7
-#define IRQ_XIRQ7_LEVEL 8
-
-/* IRQ IDs presented to drivers */
-#define IRQ_CPU__UNUSED IRQ_BASE_CPU
-#define IRQ_CPU_UART0 (IRQ_BASE_CPU + IRQ_UART0_LEVEL)
-#define IRQ_CPU_UART1 (IRQ_BASE_CPU + IRQ_UART1_LEVEL)
-#define IRQ_CPU_TIMER0 (IRQ_BASE_CPU + IRQ_TIMER0_LEVEL)
-#define IRQ_CPU_TIMER1 (IRQ_BASE_CPU + IRQ_TIMER1_LEVEL)
-#define IRQ_CPU_TIMER2 (IRQ_BASE_CPU + IRQ_TIMER2_LEVEL)
-#define IRQ_CPU_DMA0 (IRQ_BASE_CPU + IRQ_DMA0_LEVEL)
-#define IRQ_CPU_DMA1 (IRQ_BASE_CPU + IRQ_DMA1_LEVEL)
-#define IRQ_CPU_DMA2 (IRQ_BASE_CPU + IRQ_DMA2_LEVEL)
-#define IRQ_CPU_DMA3 (IRQ_BASE_CPU + IRQ_DMA3_LEVEL)
-#define IRQ_CPU_DMA4 (IRQ_BASE_CPU + IRQ_DMA4_LEVEL)
-#define IRQ_CPU_DMA5 (IRQ_BASE_CPU + IRQ_DMA5_LEVEL)
-#define IRQ_CPU_DMA6 (IRQ_BASE_CPU + IRQ_DMA6_LEVEL)
-#define IRQ_CPU_DMA7 (IRQ_BASE_CPU + IRQ_DMA7_LEVEL)
-#define IRQ_CPU_EXTERNAL0 (IRQ_BASE_CPU + IRQ_XIRQ0_LEVEL)
-#define IRQ_CPU_EXTERNAL1 (IRQ_BASE_CPU + IRQ_XIRQ1_LEVEL)
-#define IRQ_CPU_EXTERNAL2 (IRQ_BASE_CPU + IRQ_XIRQ2_LEVEL)
-#define IRQ_CPU_EXTERNAL3 (IRQ_BASE_CPU + IRQ_XIRQ3_LEVEL)
-#define IRQ_CPU_EXTERNAL4 (IRQ_BASE_CPU + IRQ_XIRQ4_LEVEL)
-#define IRQ_CPU_EXTERNAL5 (IRQ_BASE_CPU + IRQ_XIRQ5_LEVEL)
-#define IRQ_CPU_EXTERNAL6 (IRQ_BASE_CPU + IRQ_XIRQ6_LEVEL)
-#define IRQ_CPU_EXTERNAL7 (IRQ_BASE_CPU + IRQ_XIRQ7_LEVEL)
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_CPU_IRQS_H */
+++ /dev/null
-/* current.h: FRV current task pointer
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_CURRENT_H
-#define _ASM_CURRENT_H
-
-#ifndef __ASSEMBLY__
-
-/*
- * dedicate GR29 to keeping the current task pointer
- */
-register struct task_struct *current asm("gr29");
-
-#define get_current() current
-
-#else
-
-#define CURRENT gr29
-
-#endif
-
-#endif /* _ASM_CURRENT_H */
+++ /dev/null
-/* delay.h: FRV delay code
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_DELAY_H
-#define _ASM_DELAY_H
-
-#include <asm/param.h>
-#include <asm/timer-regs.h>
-
-/*
- * delay loop - runs at __core_clock_speed_HZ / 2 [there are 2 insns in the loop]
- */
-extern unsigned long __delay_loops_MHz;
-
-static inline void __delay(unsigned long loops)
-{
- asm volatile("1: subicc %0,#1,%0,icc0 \n"
- " bnc icc0,#2,1b \n"
- : "=r" (loops)
- : "0" (loops)
- : "icc0"
- );
-}
-
-/*
- * Use only for very small delays ( < 1 msec). Should probably use a
- * lookup table, really, as the multiplications take much too long with
- * short delays. This is a "reasonable" implementation, though (and the
- * first constant multiplications gets optimized away if the delay is
- * a constant)
- */
-
-extern unsigned long loops_per_jiffy;
-
-static inline void udelay(unsigned long usecs)
-{
- __delay(usecs * __delay_loops_MHz);
-}
-
-#define ndelay(n) udelay((n) * 5)
-
-#endif /* _ASM_DELAY_H */
+++ /dev/null
-#include <asm-generic/div64.h>
+++ /dev/null
-/* dm9000.h: Davicom DM9000 adapter configuration
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_DM9000_H
-#define _ASM_DM9000_H
-
-#include <asm/mb-regs.h>
-
-#define DM9000_ARCH_IOBASE (__region_CS6 + 0x300)
-#define DM9000_ARCH_IRQ IRQ_CPU_EXTERNAL3 /* XIRQ #3 (shared with FPGA) */
-#undef DM9000_ARCH_IRQ_ACTLOW /* IRQ pin active high */
-#define DM9000_ARCH_BUS_INFO "CS6#+0x300" /* bus info for ethtool */
-
-#undef __is_PCI_IO
-#define __is_PCI_IO(addr) 0 /* not PCI */
-
-#undef inl
-#define inl(addr) \
-({ \
- unsigned long __ioaddr = (unsigned long) addr; \
- uint32_t x = readl(__ioaddr); \
- ((x & 0xff) << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | ((x >> 24) & 0xff); \
-})
-
-#undef insl
-#define insl(a,b,l) __insl(a,b,l,0) /* don't byte-swap */
-
-
-#endif /* _ASM_DM9000_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_DMA_MAPPING_H
-#define _ASM_DMA_MAPPING_H
-
-#include <asm/cache.h>
-#include <asm/cacheflush.h>
-
-extern unsigned long __nongprelbss dma_coherent_mem_start;
-extern unsigned long __nongprelbss dma_coherent_mem_end;
-
-extern const struct dma_map_ops frv_dma_ops;
-
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
- return &frv_dma_ops;
-}
-
-#endif /* _ASM_DMA_MAPPING_H */
+++ /dev/null
-/* dma.h: FRV DMA controller management
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_DMA_H
-#define _ASM_DMA_H
-
-//#define DMA_DEBUG 1
-
-#include <linux/interrupt.h>
-
-#undef MAX_DMA_CHANNELS /* don't use kernel/dma.c */
-
-/* under 2.4 this is actually needed by the new bootmem allocator */
-#define MAX_DMA_ADDRESS PAGE_OFFSET
-
-/*
- * FRV DMA controller management
- */
-typedef irqreturn_t (*dma_irq_handler_t)(int dmachan, unsigned long cstr, void *data);
-
-extern void frv_dma_init(void);
-
-extern int frv_dma_open(const char *devname,
- unsigned long dmamask,
- int dmacap,
- dma_irq_handler_t handler,
- unsigned long irq_flags,
- void *data);
-
-/* channels required */
-#define FRV_DMA_MASK_ANY ULONG_MAX /* any channel */
-
-/* capabilities required */
-#define FRV_DMA_CAP_DREQ 0x01 /* DMA request pin */
-#define FRV_DMA_CAP_DACK 0x02 /* DMA ACK pin */
-#define FRV_DMA_CAP_DONE 0x04 /* DMA done pin */
-
-extern void frv_dma_close(int dma);
-
-extern void frv_dma_config(int dma, unsigned long ccfr, unsigned long cctr, unsigned long apr);
-
-extern void frv_dma_start(int dma,
- unsigned long sba, unsigned long dba,
- unsigned long pix, unsigned long six, unsigned long bcl);
-
-extern void frv_dma_restart_circular(int dma, unsigned long six);
-
-extern void frv_dma_stop(int dma);
-
-extern int is_frv_dma_interrupting(int dma);
-
-extern void frv_dma_dump(int dma);
-
-extern void frv_dma_status_clear(int dma);
-
-#define FRV_DMA_NCHANS 8
-#define FRV_DMA_4CHANS 4
-#define FRV_DMA_8CHANS 8
-
-#define DMAC_CCFRx 0x00 /* channel configuration reg */
-#define DMAC_CCFRx_CM_SHIFT 16
-#define DMAC_CCFRx_CM_DA 0x00000000
-#define DMAC_CCFRx_CM_SCA 0x00010000
-#define DMAC_CCFRx_CM_DCA 0x00020000
-#define DMAC_CCFRx_CM_2D 0x00030000
-#define DMAC_CCFRx_ATS_SHIFT 8
-#define DMAC_CCFRx_RS_INTERN 0x00000000
-#define DMAC_CCFRx_RS_EXTERN 0x00000001
-#define DMAC_CCFRx_RS_SHIFT 0
-
-#define DMAC_CSTRx 0x08 /* channel status reg */
-#define DMAC_CSTRx_FS 0x0000003f
-#define DMAC_CSTRx_NE 0x00000100
-#define DMAC_CSTRx_FED 0x00000200
-#define DMAC_CSTRx_WER 0x00000800
-#define DMAC_CSTRx_RER 0x00001000
-#define DMAC_CSTRx_CE 0x00002000
-#define DMAC_CSTRx_INT 0x00800000
-#define DMAC_CSTRx_BUSY 0x80000000
-
-#define DMAC_CCTRx 0x10 /* channel control reg */
-#define DMAC_CCTRx_DSIZ_1 0x00000000
-#define DMAC_CCTRx_DSIZ_2 0x00000001
-#define DMAC_CCTRx_DSIZ_4 0x00000002
-#define DMAC_CCTRx_DSIZ_32 0x00000005
-#define DMAC_CCTRx_DAU_HOLD 0x00000000
-#define DMAC_CCTRx_DAU_INC 0x00000010
-#define DMAC_CCTRx_DAU_DEC 0x00000020
-#define DMAC_CCTRx_SSIZ_1 0x00000000
-#define DMAC_CCTRx_SSIZ_2 0x00000100
-#define DMAC_CCTRx_SSIZ_4 0x00000200
-#define DMAC_CCTRx_SSIZ_32 0x00000500
-#define DMAC_CCTRx_SAU_HOLD 0x00000000
-#define DMAC_CCTRx_SAU_INC 0x00001000
-#define DMAC_CCTRx_SAU_DEC 0x00002000
-#define DMAC_CCTRx_FC 0x08000000
-#define DMAC_CCTRx_ICE 0x10000000
-#define DMAC_CCTRx_IE 0x40000000
-#define DMAC_CCTRx_ACT 0x80000000
-
-#define DMAC_SBAx 0x18 /* source base address reg */
-#define DMAC_DBAx 0x20 /* data base address reg */
-#define DMAC_PIXx 0x28 /* primary index reg */
-#define DMAC_SIXx 0x30 /* secondary index reg */
-#define DMAC_BCLx 0x38 /* byte count limit reg */
-#define DMAC_APRx 0x40 /* alternate pointer reg */
-
-/*
- * required for PCI + MODULES
- */
-#ifdef CONFIG_PCI
-extern int isa_dma_bridge_buggy;
-#else
-#define isa_dma_bridge_buggy (0)
-#endif
-
-#endif /* _ASM_DMA_H */
+++ /dev/null
-/* elf.h: FR-V ELF definitions
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from include/asm-m68knommu/elf.h
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef __ASM_ELF_H
-#define __ASM_ELF_H
-
-#include <asm/ptrace.h>
-#include <asm/user.h>
-
-struct elf32_hdr;
-
-/*
- * ELF header e_flags defines.
- */
-#define EF_FRV_GPR_MASK 0x00000003 /* mask for # of gprs */
-#define EF_FRV_GPR32 0x00000001 /* Only uses GR on 32-register */
-#define EF_FRV_GPR64 0x00000002 /* Only uses GR on 64-register */
-#define EF_FRV_FPR_MASK 0x0000000c /* mask for # of fprs */
-#define EF_FRV_FPR32 0x00000004 /* Only uses FR on 32-register */
-#define EF_FRV_FPR64 0x00000008 /* Only uses FR on 64-register */
-#define EF_FRV_FPR_NONE 0x0000000C /* Uses software floating-point */
-#define EF_FRV_DWORD_MASK 0x00000030 /* mask for dword support */
-#define EF_FRV_DWORD_YES 0x00000010 /* Assumes stack aligned to 8-byte boundaries. */
-#define EF_FRV_DWORD_NO 0x00000020 /* Assumes stack aligned to 4-byte boundaries. */
-#define EF_FRV_DOUBLE 0x00000040 /* Uses double instructions. */
-#define EF_FRV_MEDIA 0x00000080 /* Uses media instructions. */
-#define EF_FRV_PIC 0x00000100 /* Uses position independent code. */
-#define EF_FRV_NON_PIC_RELOCS 0x00000200 /* Does not use position Independent code. */
-#define EF_FRV_MULADD 0x00000400 /* -mmuladd */
-#define EF_FRV_BIGPIC 0x00000800 /* -fPIC */
-#define EF_FRV_LIBPIC 0x00001000 /* -mlibrary-pic */
-#define EF_FRV_G0 0x00002000 /* -G 0, no small data ptr */
-#define EF_FRV_NOPACK 0x00004000 /* -mnopack */
-#define EF_FRV_FDPIC 0x00008000 /* -mfdpic */
-#define EF_FRV_CPU_MASK 0xff000000 /* specific cpu bits */
-#define EF_FRV_CPU_GENERIC 0x00000000 /* Set CPU type is FR-V */
-#define EF_FRV_CPU_FR500 0x01000000 /* Set CPU type is FR500 */
-#define EF_FRV_CPU_FR300 0x02000000 /* Set CPU type is FR300 */
-#define EF_FRV_CPU_SIMPLE 0x03000000 /* SIMPLE */
-#define EF_FRV_CPU_TOMCAT 0x04000000 /* Tomcat, FR500 prototype */
-#define EF_FRV_CPU_FR400 0x05000000 /* Set CPU type is FR400 */
-#define EF_FRV_CPU_FR550 0x06000000 /* Set CPU type is FR550 */
-#define EF_FRV_CPU_FR405 0x07000000 /* Set CPU type is FR405 */
-#define EF_FRV_CPU_FR450 0x08000000 /* Set CPU type is FR450 */
-
-/*
- * FR-V ELF relocation types
- */
-
-
-/*
- * ELF register definitions..
- */
-typedef unsigned long elf_greg_t;
-
-#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-typedef struct user_fpmedia_regs elf_fpregset_t;
-
-/*
- * This is used to ensure we don't load something for the wrong architecture.
- */
-extern int elf_check_arch(const struct elf32_hdr *hdr);
-
-#define elf_check_fdpic(x) ((x)->e_flags & EF_FRV_FDPIC && !((x)->e_flags & EF_FRV_NON_PIC_RELOCS))
-#define elf_check_const_displacement(x) ((x)->e_flags & EF_FRV_PIC)
-
-/*
- * These are used to set parameters in the core dumps.
- */
-#define ELF_CLASS ELFCLASS32
-#define ELF_DATA ELFDATA2MSB
-#define ELF_ARCH EM_FRV
-
-#define ELF_PLAT_INIT(_r) \
-do { \
- __kernel_frame0_ptr->gr16 = 0; \
- __kernel_frame0_ptr->gr17 = 0; \
- __kernel_frame0_ptr->gr18 = 0; \
- __kernel_frame0_ptr->gr19 = 0; \
- __kernel_frame0_ptr->gr20 = 0; \
- __kernel_frame0_ptr->gr21 = 0; \
- __kernel_frame0_ptr->gr22 = 0; \
- __kernel_frame0_ptr->gr23 = 0; \
- __kernel_frame0_ptr->gr24 = 0; \
- __kernel_frame0_ptr->gr25 = 0; \
- __kernel_frame0_ptr->gr26 = 0; \
- __kernel_frame0_ptr->gr27 = 0; \
- __kernel_frame0_ptr->gr29 = 0; \
-} while(0)
-
-#define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, _dynamic_addr) \
-do { \
- __kernel_frame0_ptr->gr16 = _exec_map_addr; \
- __kernel_frame0_ptr->gr17 = _interp_map_addr; \
- __kernel_frame0_ptr->gr18 = _dynamic_addr; \
- __kernel_frame0_ptr->gr19 = 0; \
- __kernel_frame0_ptr->gr20 = 0; \
- __kernel_frame0_ptr->gr21 = 0; \
- __kernel_frame0_ptr->gr22 = 0; \
- __kernel_frame0_ptr->gr23 = 0; \
- __kernel_frame0_ptr->gr24 = 0; \
- __kernel_frame0_ptr->gr25 = 0; \
- __kernel_frame0_ptr->gr26 = 0; \
- __kernel_frame0_ptr->gr27 = 0; \
- __kernel_frame0_ptr->gr29 = 0; \
-} while(0)
-
-#define CORE_DUMP_USE_REGSET
-#define ELF_FDPIC_CORE_EFLAGS EF_FRV_FDPIC
-#define ELF_EXEC_PAGESIZE 16384
-
-/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
- use of this is to invoke "./ld.so someprog" to test out a new version of
- the loader. We need to make sure that it is out of the way of the program
- that it will "exec", and that there is sufficient room for the brk. */
-
-#define ELF_ET_DYN_BASE 0x08000000UL
-
-/* This yields a mask that user programs can use to figure out what
- instruction set this cpu supports. */
-
-#define ELF_HWCAP (0)
-
-/* This yields a string that ld.so will use to load implementation
- specific libraries for optimization. This is more specific in
- intent than poking at uname or /proc/cpuinfo. */
-
-#define ELF_PLATFORM (NULL)
-
-#endif
+++ /dev/null
-#ifndef _ASM_EMERGENCY_RESTART_H
-#define _ASM_EMERGENCY_RESTART_H
-
-#include <asm-generic/emergency-restart.h>
-
-#endif /* _ASM_EMERGENCY_RESTART_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_FPU_H
-#define __ASM_FPU_H
-
-
-/*
- * MAX floating point unit state size (FSAVE/FRESTORE)
- */
-
-#define kernel_fpu_end() do { asm volatile("bar":::"memory"); preempt_enable(); } while(0)
-
-#endif /* __ASM_FPU_H */
+++ /dev/null
-/* empty */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_FUTEX_H
-#define _ASM_FUTEX_H
-
-#ifdef __KERNEL__
-
-#include <linux/futex.h>
-#include <asm/errno.h>
-#include <linux/uaccess.h>
-
-extern int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
- u32 __user *uaddr);
-
-static inline int
-futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
- u32 oldval, u32 newval)
-{
- return -ENOSYS;
-}
-
-#endif
-#endif
+++ /dev/null
-/* gdb-stub.h: FRV GDB stub
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from asm-mips/gdb-stub.h (c) 1995 Andreas Busse
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef __ASM_GDB_STUB_H
-#define __ASM_GDB_STUB_H
-
-#undef GDBSTUB_DEBUG_IO
-#undef GDBSTUB_DEBUG_PROTOCOL
-
-#include <asm/ptrace.h>
-
-/*
- * important register numbers in GDB protocol
- * - GR0, GR1, GR2, GR3, GR4, GR5, GR6, GR7,
- * - GR8, GR9, GR10, GR11, GR12, GR13, GR14, GR15,
- * - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23,
- * - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31,
- * - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39,
- * - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47,
- * - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55,
- * - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63,
- * - FR0, FR1, FR2, FR3, FR4, FR5, FR6, FR7,
- * - FR8, FR9, FR10, FR11, FR12, FR13, FR14, FR15,
- * - FR16, FR17, FR18, FR19, FR20, FR21, FR22, FR23,
- * - FR24, FR25, FR26, FR27, FR28, FR29, FR30, FR31,
- * - FR32, FR33, FR34, FR35, FR36, FR37, FR38, FR39,
- * - FR40, FR41, FR42, FR43, FR44, FR45, FR46, FR47,
- * - FR48, FR49, FR50, FR51, FR52, FR53, FR54, FR55,
- * - FR56, FR57, FR58, FR59, FR60, FR61, FR62, FR63,
- * - PC, PSR, CCR, CCCR,
- * - _X132, _X133, _X134
- * - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3,
- * - SCR0, SCR1, SCR2, SCR3,
- * - LR, LCR,
- * - IACC0H, IACC0L,
- * - FSR0,
- * - ACC0, ACC1, ACC2, ACC3, ACC4, ACC5, ACC6, ACC7,
- * - ACCG0123, ACCG4567,
- * - MSR0, MSR1,
- * - GNER0, GNER1,
- * - FNER0, FNER1,
- */
-#define GDB_REG_GR(N) (N)
-#define GDB_REG_FR(N) (64+(N))
-#define GDB_REG_PC 128
-#define GDB_REG_PSR 129
-#define GDB_REG_CCR 130
-#define GDB_REG_CCCR 131
-#define GDB_REG_TBR 135
-#define GDB_REG_BRR 136
-#define GDB_REG_DBAR(N) (137+(N))
-#define GDB_REG_SCR(N) (141+(N))
-#define GDB_REG_LR 145
-#define GDB_REG_LCR 146
-#define GDB_REG_FSR0 149
-#define GDB_REG_ACC(N) (150+(N))
-#define GDB_REG_ACCG(N) (158+(N)/4)
-#define GDB_REG_MSR(N) (160+(N))
-#define GDB_REG_GNER(N) (162+(N))
-#define GDB_REG_FNER(N) (164+(N))
-
-#define GDB_REG_SP GDB_REG_GR(1)
-#define GDB_REG_FP GDB_REG_GR(2)
-
-#ifndef _LANGUAGE_ASSEMBLY
-
-/*
- * Prototypes
- */
-extern void show_registers_only(struct pt_regs *regs);
-
-extern void gdbstub_init(void);
-extern void gdbstub(int type);
-extern void gdbstub_exit(int status);
-
-extern void gdbstub_io_init(void);
-extern void gdbstub_set_baud(unsigned baud);
-extern int gdbstub_rx_char(unsigned char *_ch, int nonblock);
-extern void gdbstub_tx_char(unsigned char ch);
-extern void gdbstub_tx_flush(void);
-extern void gdbstub_do_rx(void);
-
-extern asmlinkage void __debug_stub_init_break(void);
-extern asmlinkage void __break_hijack_kernel_event(void);
-extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
-
-extern asmlinkage void gdbstub_rx_handler(void);
-extern asmlinkage void gdbstub_rx_irq(void);
-extern asmlinkage void gdbstub_intercept(void);
-
-extern uint32_t __entry_usertrap_table[];
-extern uint32_t __entry_kerneltrap_table[];
-
-extern volatile u8 gdbstub_rx_buffer[PAGE_SIZE];
-extern volatile u32 gdbstub_rx_inp;
-extern volatile u32 gdbstub_rx_outp;
-extern volatile u8 gdbstub_rx_overflow;
-extern u8 gdbstub_rx_unget;
-
-extern void gdbstub_printk(const char *fmt, ...);
-extern void debug_to_serial(const char *p, int n);
-extern void console_set_baud(unsigned baud);
-
-#ifdef GDBSTUB_DEBUG_IO
-#define gdbstub_io(FMT,...) gdbstub_printk(FMT, ##__VA_ARGS__)
-#else
-#define gdbstub_io(FMT,...) ({ 0; })
-#endif
-
-#ifdef GDBSTUB_DEBUG_PROTOCOL
-#define gdbstub_proto(FMT,...) gdbstub_printk(FMT,##__VA_ARGS__)
-#else
-#define gdbstub_proto(FMT,...) ({ 0; })
-#endif
-
-/*
- * we dedicate GR31 to keeping a pointer to the gdbstub exception frame
- * - gr31 is destroyed on entry to the gdbstub if !MMU
- * - gr31 is saved in scr3 on entry to the gdbstub if in !MMU
- */
-register struct frv_frame0 *__debug_frame0 asm("gr31");
-
-#define __debug_frame (&__debug_frame0->regs)
-#define __debug_user_context (&__debug_frame0->uc)
-#define __debug_regs (&__debug_frame0->debug)
-#define __debug_reg(X) ((unsigned long *) ((unsigned long) &__debug_frame0 + (X)))
-
-struct frv_debug_status {
- unsigned long bpsr;
- unsigned long dcr;
- unsigned long brr;
- unsigned long nmar;
-};
-
-extern struct frv_debug_status __debug_status;
-
-#endif /* _LANGUAGE_ASSEMBLY */
-#endif /* __ASM_GDB_STUB_H */
+++ /dev/null
-/* gpio-regs.h: on-chip general purpose I/O registers
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_GPIO_REGS
-#define _ASM_GPIO_REGS
-
-#define __reg(ADDR) (*(volatile unsigned long *)(ADDR))
-
-#define __get_PDR() ({ __reg(0xfeff0400); })
-#define __set_PDR(V) do { __reg(0xfeff0400) = (V); mb(); } while(0)
-
-#define __get_GPDR() ({ __reg(0xfeff0408); })
-#define __set_GPDR(V) do { __reg(0xfeff0408) = (V); mb(); } while(0)
-
-#define __get_SIR() ({ __reg(0xfeff0410); })
-#define __set_SIR(V) do { __reg(0xfeff0410) = (V); mb(); } while(0)
-
-#define __get_SOR() ({ __reg(0xfeff0418); })
-#define __set_SOR(V) do { __reg(0xfeff0418) = (V); mb(); } while(0)
-
-#define __set_PDSR(V) do { __reg(0xfeff0420) = (V); mb(); } while(0)
-
-#define __set_PDCR(V) do { __reg(0xfeff0428) = (V); mb(); } while(0)
-
-#define __get_RSTR() ({ __reg(0xfeff0500); })
-#define __set_RSTR(V) do { __reg(0xfeff0500) = (V); mb(); } while(0)
-
-
-
-/* PDR definitions */
-#define PDR_GPIO_DATA(X) (1 << (X))
-
-/* GPDR definitions */
-#define GPDR_INPUT 0
-#define GPDR_OUTPUT 1
-#define GPDR_DREQ0_BIT 0x00001000
-#define GPDR_DREQ1_BIT 0x00008000
-#define GPDR_DREQ2_BIT 0x00040000
-#define GPDR_DREQ3_BIT 0x00080000
-#define GPDR_DREQ4_BIT 0x00004000
-#define GPDR_DREQ5_BIT 0x00020000
-#define GPDR_DREQ6_BIT 0x00100000
-#define GPDR_DREQ7_BIT 0x00200000
-#define GPDR_DACK0_BIT 0x00002000
-#define GPDR_DACK1_BIT 0x00010000
-#define GPDR_DACK2_BIT 0x00100000
-#define GPDR_DACK3_BIT 0x00200000
-#define GPDR_DONE0_BIT 0x00004000
-#define GPDR_DONE1_BIT 0x00020000
-#define GPDR_GPIO_DIR(X,D) ((D) << (X))
-
-/* SIR definitions */
-#define SIR_GPIO_INPUT 0
-#define SIR_DREQ7_INPUT 0x00200000
-#define SIR_DREQ6_INPUT 0x00100000
-#define SIR_DREQ3_INPUT 0x00080000
-#define SIR_DREQ2_INPUT 0x00040000
-#define SIR_DREQ5_INPUT 0x00020000
-#define SIR_DREQ1_INPUT 0x00008000
-#define SIR_DREQ4_INPUT 0x00004000
-#define SIR_DREQ0_INPUT 0x00001000
-#define SIR_RXD1_INPUT 0x00000400
-#define SIR_CTS0_INPUT 0x00000100
-#define SIR_RXD0_INPUT 0x00000040
-#define SIR_GATE1_INPUT 0x00000020
-#define SIR_GATE0_INPUT 0x00000010
-#define SIR_IRQ3_INPUT 0x00000008
-#define SIR_IRQ2_INPUT 0x00000004
-#define SIR_IRQ1_INPUT 0x00000002
-#define SIR_IRQ0_INPUT 0x00000001
-#define SIR_DREQ_BITS (SIR_DREQ0_INPUT | SIR_DREQ1_INPUT | \
- SIR_DREQ2_INPUT | SIR_DREQ3_INPUT | \
- SIR_DREQ4_INPUT | SIR_DREQ5_INPUT | \
- SIR_DREQ6_INPUT | SIR_DREQ7_INPUT)
-
-/* SOR definitions */
-#define SOR_GPIO_OUTPUT 0
-#define SOR_DACK3_OUTPUT 0x00200000
-#define SOR_DACK2_OUTPUT 0x00100000
-#define SOR_DONE1_OUTPUT 0x00020000
-#define SOR_DACK1_OUTPUT 0x00010000
-#define SOR_DONE0_OUTPUT 0x00004000
-#define SOR_DACK0_OUTPUT 0x00002000
-#define SOR_TXD1_OUTPUT 0x00000800
-#define SOR_RTS0_OUTPUT 0x00000200
-#define SOR_TXD0_OUTPUT 0x00000080
-#define SOR_TOUT1_OUTPUT 0x00000020
-#define SOR_TOUT0_OUTPUT 0x00000010
-#define SOR_DONE_BITS (SOR_DONE0_OUTPUT | SOR_DONE1_OUTPUT)
-#define SOR_DACK_BITS (SOR_DACK0_OUTPUT | SOR_DACK1_OUTPUT | \
- SOR_DACK2_OUTPUT | SOR_DACK3_OUTPUT)
-
-/* PDSR definitions */
-#define PDSR_UNCHANGED 0
-#define PDSR_SET_BIT(X) (1 << (X))
-
-/* PDCR definitions */
-#define PDCR_UNCHANGED 0
-#define PDCR_CLEAR_BIT(X) (1 << (X))
-
-/* RSTR definitions */
-/* Read Only */
-#define RSTR_POWERON 0x00000400
-#define RSTR_SOFTRESET_STATUS 0x00000100
-/* Write Only */
-#define RSTR_SOFTRESET 0x00000001
-
-#endif /* _ASM_GPIO_REGS */
+++ /dev/null
-/* hardirq.h: FRV hardware IRQ management
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef __ASM_HARDIRQ_H
-#define __ASM_HARDIRQ_H
-
-#include <linux/atomic.h>
-
-extern atomic_t irq_err_count;
-static inline void ack_bad_irq(int irq)
-{
- atomic_inc(&irq_err_count);
-}
-#define ack_bad_irq ack_bad_irq
-
-#include <asm-generic/hardirq.h>
-
-#endif
+++ /dev/null
-/* highmem.h: virtual kernel memory mappings for high memory
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from include/asm-i386/highmem.h
- *
- * See Documentation/frv/mmu-layout.txt for more information.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_HIGHMEM_H
-#define _ASM_HIGHMEM_H
-
-#ifdef __KERNEL__
-
-#include <linux/init.h>
-#include <linux/highmem.h>
-#include <asm/mem-layout.h>
-#include <asm/spr-regs.h>
-#include <asm/mb-regs.h>
-
-#define NR_TLB_LINES 64 /* number of lines in the TLB */
-
-#ifndef __ASSEMBLY__
-
-#include <linux/interrupt.h>
-#include <asm/kmap_types.h>
-#include <asm/pgtable.h>
-
-#ifdef CONFIG_DEBUG_HIGHMEM
-#define HIGHMEM_DEBUG 1
-#else
-#define HIGHMEM_DEBUG 0
-#endif
-
-/* declarations for highmem.c */
-extern unsigned long highstart_pfn, highend_pfn;
-
-#define kmap_prot PAGE_KERNEL
-#define kmap_pte ______kmap_pte_in_TLB
-extern pte_t *pkmap_page_table;
-
-#define flush_cache_kmaps() do { } while (0)
-
-/*
- * Right now we initialize only a single pte table. It can be extended
- * easily, subsequent pte tables have to be allocated in one physical
- * chunk of RAM.
- */
-#define LAST_PKMAP PTRS_PER_PTE
-#define LAST_PKMAP_MASK (LAST_PKMAP - 1)
-#define PKMAP_NR(virt) ((virt - PKMAP_BASE) >> PAGE_SHIFT)
-#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
-
-extern void *kmap_high(struct page *page);
-extern void kunmap_high(struct page *page);
-
-extern void *kmap(struct page *page);
-extern void kunmap(struct page *page);
-
-#endif /* !__ASSEMBLY__ */
-
-/*
- * The use of kmap_atomic/kunmap_atomic is discouraged - kmap/kunmap
- * gives a more generic (and caching) interface. But kmap_atomic can
- * be used in IRQ contexts, so in some (very limited) cases we need
- * it.
- */
-#define KMAP_ATOMIC_CACHE_DAMR 8
-
-#ifndef __ASSEMBLY__
-
-#define __kmap_atomic_primary(cached, paddr, ampr) \
-({ \
- unsigned long damlr, dampr; \
- \
- dampr = paddr | xAMPRx_L | xAMPRx_M | xAMPRx_S | xAMPRx_SS_16Kb | xAMPRx_V; \
- \
- if (!cached) \
- asm volatile("movgs %0,dampr"#ampr :: "r"(dampr) : "memory"); \
- else \
- /* cache flush page attachment point */ \
- asm volatile("movgs %0,iampr"#ampr"\n" \
- "movgs %0,dampr"#ampr"\n" \
- :: "r"(dampr) : "memory" \
- ); \
- \
- asm("movsg damlr"#ampr",%0" : "=r"(damlr)); \
- \
- /*printk("DAMR"#ampr": PRIM sl=%d L=%08lx P=%08lx\n", type, damlr, dampr);*/ \
- \
- (void *) damlr; \
-})
-
-#define __kmap_atomic_secondary(slot, paddr) \
-({ \
- unsigned long damlr = KMAP_ATOMIC_SECONDARY_FRAME + (slot) * PAGE_SIZE; \
- unsigned long dampr = paddr | xAMPRx_L | xAMPRx_M | xAMPRx_S | xAMPRx_SS_16Kb | xAMPRx_V; \
- \
- asm volatile("movgs %0,tplr \n" \
- "movgs %1,tppr \n" \
- "tlbpr %0,gr0,#2,#1" \
- : : "r"(damlr), "r"(dampr) : "memory"); \
- \
- /*printk("TLB: SECN sl=%d L=%08lx P=%08lx\n", slot, damlr, dampr);*/ \
- \
- (void *) damlr; \
-})
-
-static inline void *kmap_atomic_primary(struct page *page)
-{
- unsigned long paddr;
-
- pagefault_disable();
- paddr = page_to_phys(page);
-
- return __kmap_atomic_primary(1, paddr, 2);
-}
-
-#define __kunmap_atomic_primary(cached, ampr) \
-do { \
- asm volatile("movgs gr0,dampr"#ampr"\n" ::: "memory"); \
- if (cached) \
- asm volatile("movgs gr0,iampr"#ampr"\n" ::: "memory"); \
-} while(0)
-
-#define __kunmap_atomic_secondary(slot, vaddr) \
-do { \
- asm volatile("tlbpr %0,gr0,#4,#1" : : "r"(vaddr) : "memory"); \
-} while(0)
-
-static inline void kunmap_atomic_primary(void *kvaddr)
-{
- __kunmap_atomic_primary(1, 2);
- pagefault_enable();
-}
-
-void *kmap_atomic(struct page *page);
-void __kunmap_atomic(void *kvaddr);
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_HIGHMEM_H */
+++ /dev/null
-/* hw_irq.h: FR-V specific h/w IRQ stuff
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_HW_IRQ_H
-#define _ASM_HW_IRQ_H
-
-
-#endif /* _ASM_HW_IRQ_H */
+++ /dev/null
-/* io.h: FRV I/O operations
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * This gets interesting when talking to the PCI bus - the CPU is in big endian
- * mode, the PCI bus is little endian and the hardware in the middle can do
- * byte swapping
- */
-#ifndef _ASM_IO_H
-#define _ASM_IO_H
-
-#ifdef __KERNEL__
-
-#define ARCH_HAS_IOREMAP_WT
-
-#include <linux/types.h>
-#include <asm/virtconvert.h>
-#include <asm/string.h>
-#include <asm/mb-regs.h>
-#include <asm-generic/pci_iomap.h>
-#include <linux/delay.h>
-
-/*
- * swap functions are sometimes needed to interface little-endian hardware
- */
-
-static inline unsigned short _swapw(unsigned short v)
-{
- return ((v << 8) | (v >> 8));
-}
-
-static inline unsigned long _swapl(unsigned long v)
-{
- return ((v << 24) | ((v & 0xff00) << 8) | ((v & 0xff0000) >> 8) | (v >> 24));
-}
-
-//#define __iormb() asm volatile("membar")
-//#define __iowmb() asm volatile("membar")
-
-static inline u8 __raw_readb(const volatile void __iomem *addr)
-{
- return __builtin_read8((volatile void __iomem *)addr);
-}
-
-static inline u16 __raw_readw(const volatile void __iomem *addr)
-{
- return __builtin_read16((volatile void __iomem *)addr);
-}
-
-static inline u32 __raw_readl(const volatile void __iomem *addr)
-{
- return __builtin_read32((volatile void __iomem *)addr);
-}
-
-#define __raw_writeb(datum, addr) __builtin_write8(addr, datum)
-#define __raw_writew(datum, addr) __builtin_write16(addr, datum)
-#define __raw_writel(datum, addr) __builtin_write32(addr, datum)
-
-static inline void io_outsb(unsigned int addr, const void *buf, int len)
-{
- unsigned long __ioaddr = (unsigned long) addr;
- const uint8_t *bp = buf;
-
- while (len--)
- __builtin_write8((volatile void __iomem *) __ioaddr, *bp++);
-}
-
-static inline void io_outsw(unsigned int addr, const void *buf, int len)
-{
- unsigned long __ioaddr = (unsigned long) addr;
- const uint16_t *bp = buf;
-
- while (len--)
- __builtin_write16((volatile void __iomem *) __ioaddr, (*bp++));
-}
-
-extern void __outsl_ns(unsigned int addr, const void *buf, int len);
-extern void __outsl_sw(unsigned int addr, const void *buf, int len);
-static inline void __outsl(unsigned int addr, const void *buf, int len, int swap)
-{
- unsigned long __ioaddr = (unsigned long) addr;
-
- if (!swap)
- __outsl_ns(__ioaddr, buf, len);
- else
- __outsl_sw(__ioaddr, buf, len);
-}
-
-static inline void io_insb(unsigned long addr, void *buf, int len)
-{
- uint8_t *bp = buf;
-
- while (len--)
- *bp++ = __builtin_read8((volatile void __iomem *) addr);
-}
-
-static inline void io_insw(unsigned long addr, void *buf, int len)
-{
- uint16_t *bp = buf;
-
- while (len--)
- *bp++ = __builtin_read16((volatile void __iomem *) addr);
-}
-
-extern void __insl_ns(unsigned long addr, void *buf, int len);
-extern void __insl_sw(unsigned long addr, void *buf, int len);
-static inline void __insl(unsigned long addr, void *buf, int len, int swap)
-{
- if (!swap)
- __insl_ns(addr, buf, len);
- else
- __insl_sw(addr, buf, len);
-}
-
-#define mmiowb() mb()
-
-/*
- * make the short names macros so specific devices
- * can override them as required
- */
-
-static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
-{
- memset((void __force *) addr, val, count);
-}
-
-static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
-{
- memcpy(dst, (void __force *) src, count);
-}
-
-static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
-{
- memcpy((void __force *) dst, src, count);
-}
-
-static inline uint8_t inb(unsigned long addr)
-{
- return __builtin_read8((void __iomem *)addr);
-}
-
-static inline uint16_t inw(unsigned long addr)
-{
- uint16_t ret = __builtin_read16((void __iomem *)addr);
-
- if (__is_PCI_IO(addr))
- ret = _swapw(ret);
-
- return ret;
-}
-
-static inline uint32_t inl(unsigned long addr)
-{
- uint32_t ret = __builtin_read32((void __iomem *)addr);
-
- if (__is_PCI_IO(addr))
- ret = _swapl(ret);
-
- return ret;
-}
-
-static inline void outb(uint8_t datum, unsigned long addr)
-{
- __builtin_write8((void __iomem *)addr, datum);
-}
-
-static inline void outw(uint16_t datum, unsigned long addr)
-{
- if (__is_PCI_IO(addr))
- datum = _swapw(datum);
- __builtin_write16((void __iomem *)addr, datum);
-}
-
-static inline void outl(uint32_t datum, unsigned long addr)
-{
- if (__is_PCI_IO(addr))
- datum = _swapl(datum);
- __builtin_write32((void __iomem *)addr, datum);
-}
-
-#define inb_p(addr) inb(addr)
-#define inw_p(addr) inw(addr)
-#define inl_p(addr) inl(addr)
-#define outb_p(x,addr) outb(x,addr)
-#define outw_p(x,addr) outw(x,addr)
-#define outl_p(x,addr) outl(x,addr)
-
-#define outsb(a,b,l) io_outsb(a,b,l)
-#define outsw(a,b,l) io_outsw(a,b,l)
-#define outsl(a,b,l) __outsl(a,b,l,0)
-
-#define insb(a,b,l) io_insb(a,b,l)
-#define insw(a,b,l) io_insw(a,b,l)
-#define insl(a,b,l) __insl(a,b,l,0)
-
-#define IO_SPACE_LIMIT 0xffffffff
-
-static inline uint8_t readb(const volatile void __iomem *addr)
-{
- return __builtin_read8((__force void volatile __iomem *) addr);
-}
-
-static inline uint16_t readw(const volatile void __iomem *addr)
-{
- uint16_t ret = __builtin_read16((__force void volatile __iomem *)addr);
-
- if (__is_PCI_MEM(addr))
- ret = _swapw(ret);
- return ret;
-}
-
-static inline uint32_t readl(const volatile void __iomem *addr)
-{
- uint32_t ret = __builtin_read32((__force void volatile __iomem *)addr);
-
- if (__is_PCI_MEM(addr))
- ret = _swapl(ret);
-
- return ret;
-}
-
-#define readb_relaxed readb
-#define readw_relaxed readw
-#define readl_relaxed readl
-
-static inline void writeb(uint8_t datum, volatile void __iomem *addr)
-{
- __builtin_write8(addr, datum);
- if (__is_PCI_MEM(addr))
- __flush_PCI_writes();
-}
-
-static inline void writew(uint16_t datum, volatile void __iomem *addr)
-{
- if (__is_PCI_MEM(addr))
- datum = _swapw(datum);
-
- __builtin_write16(addr, datum);
- if (__is_PCI_MEM(addr))
- __flush_PCI_writes();
-}
-
-static inline void writel(uint32_t datum, volatile void __iomem *addr)
-{
- if (__is_PCI_MEM(addr))
- datum = _swapl(datum);
-
- __builtin_write32(addr, datum);
- if (__is_PCI_MEM(addr))
- __flush_PCI_writes();
-}
-
-#define writeb_relaxed writeb
-#define writew_relaxed writew
-#define writel_relaxed writel
-
-/* Values for nocacheflag and cmode */
-#define IOMAP_FULL_CACHING 0
-#define IOMAP_NOCACHE_SER 1
-#define IOMAP_NOCACHE_NONSER 2
-#define IOMAP_WRITETHROUGH 3
-
-extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag);
-
-static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-
-static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-
-static inline void __iomem *ioremap_wt(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
-}
-
-static inline void __iomem *ioremap_fullcache(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
-}
-
-#define ioremap_wc ioremap_nocache
-#define ioremap_uc ioremap_nocache
-
-extern void iounmap(void volatile __iomem *addr);
-
-static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
-{
- return (void __iomem *) port;
-}
-
-static inline void ioport_unmap(void __iomem *p)
-{
-}
-
-static inline void flush_write_buffers(void)
-{
- __asm__ __volatile__ ("membar" : : :"memory");
-}
-
-/*
- * do appropriate I/O accesses for token type
- */
-static inline unsigned int ioread8(void __iomem *p)
-{
- return __builtin_read8(p);
-}
-
-static inline unsigned int ioread16(void __iomem *p)
-{
- uint16_t ret = __builtin_read16(p);
- if (__is_PCI_addr(p))
- ret = _swapw(ret);
- return ret;
-}
-
-static inline unsigned int ioread32(void __iomem *p)
-{
- uint32_t ret = __builtin_read32(p);
- if (__is_PCI_addr(p))
- ret = _swapl(ret);
- return ret;
-}
-
-static inline void iowrite8(u8 val, void __iomem *p)
-{
- __builtin_write8(p, val);
- if (__is_PCI_MEM(p))
- __flush_PCI_writes();
-}
-
-static inline void iowrite16(u16 val, void __iomem *p)
-{
- if (__is_PCI_addr(p))
- val = _swapw(val);
- __builtin_write16(p, val);
- if (__is_PCI_MEM(p))
- __flush_PCI_writes();
-}
-
-static inline void iowrite32(u32 val, void __iomem *p)
-{
- if (__is_PCI_addr(p))
- val = _swapl(val);
- __builtin_write32(p, val);
- if (__is_PCI_MEM(p))
- __flush_PCI_writes();
-}
-
-#define ioread16be(addr) be16_to_cpu(ioread16(addr))
-#define ioread32be(addr) be32_to_cpu(ioread32(addr))
-#define iowrite16be(v, addr) iowrite16(cpu_to_be16(v), (addr))
-#define iowrite32be(v, addr) iowrite32(cpu_to_be32(v), (addr))
-
-static inline void ioread8_rep(void __iomem *p, void *dst, unsigned long count)
-{
- io_insb((unsigned long) p, dst, count);
-}
-
-static inline void ioread16_rep(void __iomem *p, void *dst, unsigned long count)
-{
- io_insw((unsigned long) p, dst, count);
-}
-
-static inline void ioread32_rep(void __iomem *p, void *dst, unsigned long count)
-{
- __insl_ns((unsigned long) p, dst, count);
-}
-
-static inline void iowrite8_rep(void __iomem *p, const void *src, unsigned long count)
-{
- io_outsb((unsigned long) p, src, count);
-}
-
-static inline void iowrite16_rep(void __iomem *p, const void *src, unsigned long count)
-{
- io_outsw((unsigned long) p, src, count);
-}
-
-static inline void iowrite32_rep(void __iomem *p, const void *src, unsigned long count)
-{
- __outsl_ns((unsigned long) p, src, count);
-}
-
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
-struct pci_dev;
-static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
-{
-}
-
-
-/*
- * Convert a physical pointer to a virtual kernel pointer for /dev/mem
- * access
- */
-#define xlate_dev_mem_ptr(p) __va(p)
-
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_IO_H */
+++ /dev/null
-/* irc-regs.h: on-chip interrupt controller registers
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_IRC_REGS
-#define _ASM_IRC_REGS
-
-#define __reg(ADDR) (*(volatile unsigned long *)(ADDR))
-
-#define __get_TM0() ({ __reg(0xfeff9800); })
-#define __get_TM1() ({ __reg(0xfeff9808); })
-#define __set_TM1(V) do { __reg(0xfeff9808) = (V); mb(); } while(0)
-
-#define __set_TM1x(XI,V) \
-do { \
- int shift = (XI) * 2 + 16; \
- unsigned long tm1 = __reg(0xfeff9808); \
- tm1 &= ~(0x3 << shift); \
- tm1 |= (V) << shift; \
- __reg(0xfeff9808) = tm1; \
- mb(); \
-} while(0)
-
-#define __get_RS(C) ({ (__reg(0xfeff9810) >> ((C)+16)) & 1; })
-
-#define __clr_RC(C) do { __reg(0xfeff9818) = 1 << ((C)+16); mb(); } while(0)
-
-#define __get_MASK(C) ({ (__reg(0xfeff9820) >> ((C)+16)) & 1; })
-#define __set_MASK(C) do { __reg(0xfeff9820) |= 1 << ((C)+16); mb(); } while(0)
-#define __clr_MASK(C) do { __reg(0xfeff9820) &= ~(1 << ((C)+16)); mb(); } while(0)
-
-#define __get_MASK_all() __get_MASK(0)
-#define __set_MASK_all() __set_MASK(0)
-#define __clr_MASK_all() __clr_MASK(0)
-
-#define __get_IRL() ({ (__reg(0xfeff9828) >> 16) & 0xf; })
-#define __clr_IRL() do { __reg(0xfeff9828) = 0x100000; mb(); } while(0)
-
-#define __get_IRR(N) ({ __reg(0xfeff9840 + (N) * 8); })
-#define __set_IRR(N,V) do { __reg(0xfeff9840 + (N) * 8) = (V); } while(0)
-
-#define __get_IITMR(N) ({ __reg(0xfeff9880 + (N) * 8); })
-#define __set_IITMR(N,V) do { __reg(0xfeff9880 + (N) * 8) = (V); } while(0)
-
-
-#endif /* _ASM_IRC_REGS */
+++ /dev/null
-/* irq.h: FRV IRQ definitions
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_IRQ_H_
-#define _ASM_IRQ_H_
-
-#define NR_IRQS 48
-#define IRQ_BASE_CPU (0 * 16)
-#define IRQ_BASE_FPGA (1 * 16)
-#define IRQ_BASE_MB93493 (2 * 16)
-
-/* probe returns a 32-bit IRQ mask:-/ */
-#define MIN_PROBE_IRQ (NR_IRQS - 32)
-
-#ifndef __ASSEMBLY__
-static inline int irq_canonicalize(int irq)
-{
- return irq;
-}
-#endif
-
-#endif /* _ASM_IRQ_H_ */
+++ /dev/null
-/* FRV per-CPU frame pointer holder
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_IRQ_REGS_H
-#define _ASM_IRQ_REGS_H
-
-/*
- * Per-cpu current frame pointer - the location of the last exception frame on
- * the stack
- * - on FRV, GR28 is dedicated to keeping a pointer to the current exception
- * frame
- */
-#define ARCH_HAS_OWN_IRQ_REGS
-
-#ifndef __ASSEMBLY__
-#define get_irq_regs() (__frame)
-#endif
-
-#endif /* _ASM_IRQ_REGS_H */
+++ /dev/null
-/* FR-V interrupt handling
- *
- * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#ifndef _ASM_IRQFLAGS_H
-#define _ASM_IRQFLAGS_H
-
-/*
- * interrupt flag manipulation
- * - use virtual interrupt management since touching the PSR is slow
- * - ICC2.Z: T if interrupts virtually disabled
- * - ICC2.C: F if interrupts really disabled
- * - if Z==1 upon interrupt:
- * - C is set to 0
- * - interrupts are really disabled
- * - entry.S returns immediately
- * - uses TIHI (TRAP if Z==0 && C==0) #2 to really reenable interrupts
- * - if taken, the trap:
- * - sets ICC2.C
- * - enables interrupts
- */
-static inline void arch_local_irq_disable(void)
-{
- /* set Z flag, but don't change the C flag */
- asm volatile(" andcc gr0,gr0,gr0,icc2 \n"
- :
- :
- : "memory", "icc2"
- );
-}
-
-static inline void arch_local_irq_enable(void)
-{
- /* clear Z flag and then test the C flag */
- asm volatile(" oricc gr0,#1,gr0,icc2 \n"
- " tihi icc2,gr0,#2 \n"
- :
- :
- : "memory", "icc2"
- );
-}
-
-static inline unsigned long arch_local_save_flags(void)
-{
- unsigned long flags;
-
- asm volatile("movsg ccr,%0"
- : "=r"(flags)
- :
- : "memory");
-
- /* shift ICC2.Z to bit 0 */
- flags >>= 26;
-
- /* make flags 1 if interrupts disabled, 0 otherwise */
- return flags & 1UL;
-
-}
-
-static inline unsigned long arch_local_irq_save(void)
-{
- unsigned long flags = arch_local_save_flags();
- arch_local_irq_disable();
- return flags;
-}
-
-static inline void arch_local_irq_restore(unsigned long flags)
-{
- /* load the Z flag by turning 1 if disabled into 0 if disabled
- * and thus setting the Z flag but not the C flag */
- asm volatile(" xoricc %0,#1,gr0,icc2 \n"
- /* then trap if Z=0 and C=0 */
- " tihi icc2,gr0,#2 \n"
- :
- : "r"(flags)
- : "memory", "icc2"
- );
-
-}
-
-static inline bool arch_irqs_disabled_flags(unsigned long flags)
-{
- return flags;
-}
-
-static inline bool arch_irqs_disabled(void)
-{
- return arch_irqs_disabled_flags(arch_local_save_flags());
-}
-
-/*
- * real interrupt flag manipulation
- */
-#define __arch_local_irq_disable() \
-do { \
- unsigned long psr; \
- asm volatile(" movsg psr,%0 \n" \
- " andi %0,%2,%0 \n" \
- " ori %0,%1,%0 \n" \
- " movgs %0,psr \n" \
- : "=r"(psr) \
- : "i" (PSR_PIL_14), "i" (~PSR_PIL) \
- : "memory"); \
-} while (0)
-
-#define __arch_local_irq_enable() \
-do { \
- unsigned long psr; \
- asm volatile(" movsg psr,%0 \n" \
- " andi %0,%1,%0 \n" \
- " movgs %0,psr \n" \
- : "=r"(psr) \
- : "i" (~PSR_PIL) \
- : "memory"); \
-} while (0)
-
-#define __arch_local_save_flags(flags) \
-do { \
- typecheck(unsigned long, flags); \
- asm("movsg psr,%0" \
- : "=r"(flags) \
- : \
- : "memory"); \
-} while (0)
-
-#define __arch_local_irq_save(flags) \
-do { \
- unsigned long npsr; \
- typecheck(unsigned long, flags); \
- asm volatile(" movsg psr,%0 \n" \
- " andi %0,%3,%1 \n" \
- " ori %1,%2,%1 \n" \
- " movgs %1,psr \n" \
- : "=r"(flags), "=r"(npsr) \
- : "i" (PSR_PIL_14), "i" (~PSR_PIL) \
- : "memory"); \
-} while (0)
-
-#define __arch_local_irq_restore(flags) \
-do { \
- typecheck(unsigned long, flags); \
- asm volatile(" movgs %0,psr \n" \
- : \
- : "r" (flags) \
- : "memory"); \
-} while (0)
-
-#define __arch_irqs_disabled() \
- ((__get_PSR() & PSR_PIL) >= PSR_PIL_14)
-
-#endif /* _ASM_IRQFLAGS_H */
+++ /dev/null
-#include <asm-generic/kdebug.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-
-#ifndef _ASM_KMAP_TYPES_H
-#define _ASM_KMAP_TYPES_H
-
-#define KM_TYPE_NR 17
-
-#endif
+++ /dev/null
-#ifndef __ASM_LINKAGE_H
-#define __ASM_LINKAGE_H
-
-#define __ALIGN .align 4
-#define __ALIGN_STR ".align 4"
-
-#endif
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_LOCAL_H
-#define _ASM_LOCAL_H
-
-#include <asm-generic/local.h>
-
-#endif /* _ASM_LOCAL_H */
+++ /dev/null
-#include <asm-generic/local64.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_MATH_EMU_H
-#define _ASM_MATH_EMU_H
-
-#include <asm/setup.h>
-#include <linux/linkage.h>
-
-/* Status Register bits */
-
-/* accrued exception bits */
-#define FPSR_AEXC_INEX 3
-#define FPSR_AEXC_DZ 4
-#define FPSR_AEXC_UNFL 5
-#define FPSR_AEXC_OVFL 6
-#define FPSR_AEXC_IOP 7
-
-/* exception status bits */
-#define FPSR_EXC_INEX1 8
-#define FPSR_EXC_INEX2 9
-#define FPSR_EXC_DZ 10
-#define FPSR_EXC_UNFL 11
-#define FPSR_EXC_OVFL 12
-#define FPSR_EXC_OPERR 13
-#define FPSR_EXC_SNAN 14
-#define FPSR_EXC_BSUN 15
-
-/* quotient byte, assumes big-endian, of course */
-#define FPSR_QUOTIENT(fpsr) (*((signed char *) &(fpsr) + 1))
-
-/* condition code bits */
-#define FPSR_CC_NAN 24
-#define FPSR_CC_INF 25
-#define FPSR_CC_Z 26
-#define FPSR_CC_NEG 27
-
-
-/* Control register bits */
-
-/* rounding mode */
-#define FPCR_ROUND_RN 0 /* round to nearest/even */
-#define FPCR_ROUND_RZ 1 /* round to zero */
-#define FPCR_ROUND_RM 2 /* minus infinity */
-#define FPCR_ROUND_RP 3 /* plus infinity */
-
-/* rounding precision */
-#define FPCR_PRECISION_X 0 /* long double */
-#define FPCR_PRECISION_S 1 /* double */
-#define FPCR_PRECISION_D 2 /* float */
-
-
-/* Flags to select the debugging output */
-#define PDECODE 0
-#define PEXECUTE 1
-#define PCONV 2
-#define PNORM 3
-#define PREGISTER 4
-#define PINSTR 5
-#define PUNIMPL 6
-#define PMOVEM 7
-
-#define PMDECODE (1<<PDECODE)
-#define PMEXECUTE (1<<PEXECUTE)
-#define PMCONV (1<<PCONV)
-#define PMNORM (1<<PNORM)
-#define PMREGISTER (1<<PREGISTER)
-#define PMINSTR (1<<PINSTR)
-#define PMUNIMPL (1<<PUNIMPL)
-#define PMMOVEM (1<<PMOVEM)
-
-#ifndef __ASSEMBLY__
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-
-union fp_mant64 {
- unsigned long long m64;
- unsigned long m32[2];
-};
-
-union fp_mant128 {
- unsigned long long m64[2];
- unsigned long m32[4];
-};
-
-/* internal representation of extended fp numbers */
-struct fp_ext {
- unsigned char lowmant;
- unsigned char sign;
- unsigned short exp;
- union fp_mant64 mant;
-};
-
-/* C representation of FPU registers */
-/* NOTE: if you change this, you have to change the assembler offsets
- below and the size in <asm/fpu.h>, too */
-struct fp_data {
- struct fp_ext fpreg[8];
- unsigned int fpcr;
- unsigned int fpsr;
- unsigned int fpiar;
- unsigned short prec;
- unsigned short rnd;
- struct fp_ext temp[2];
-};
-
-#if FPU_EMU_DEBUG
-extern unsigned int fp_debugprint;
-
-#define dprint(bit, fmt, args...) ({ \
- if (fp_debugprint & (1 << (bit))) \
- printk(fmt, ## args); \
-})
-#else
-#define dprint(bit, fmt, args...)
-#endif
-
-#define uprint(str) ({ \
- static int __count = 3; \
- \
- if (__count > 0) { \
- printk("You just hit an unimplemented " \
- "fpu instruction (%s)\n", str); \
- printk("Please report this to ....\n"); \
- __count--; \
- } \
-})
-
-#define FPDATA ((struct fp_data *)current->thread.fp)
-
-#else /* __ASSEMBLY__ */
-
-#define FPDATA %a2
-
-/* offsets from the base register to the floating point data in the task struct */
-#define FPD_FPREG (TASK_THREAD+THREAD_FPREG+0)
-#define FPD_FPCR (TASK_THREAD+THREAD_FPREG+96)
-#define FPD_FPSR (TASK_THREAD+THREAD_FPREG+100)
-#define FPD_FPIAR (TASK_THREAD+THREAD_FPREG+104)
-#define FPD_PREC (TASK_THREAD+THREAD_FPREG+108)
-#define FPD_RND (TASK_THREAD+THREAD_FPREG+110)
-#define FPD_TEMPFP1 (TASK_THREAD+THREAD_FPREG+112)
-#define FPD_TEMPFP2 (TASK_THREAD+THREAD_FPREG+124)
-#define FPD_SIZEOF (TASK_THREAD+THREAD_FPREG+136)
-
-/* offsets on the stack to access saved registers,
- * these are only used during instruction decoding
- * where we always know how deep we're on the stack.
- */
-#define FPS_DO (PT_D0)
-#define FPS_D1 (PT_D1)
-#define FPS_D2 (PT_D2)
-#define FPS_A0 (PT_A0)
-#define FPS_A1 (PT_A1)
-#define FPS_A2 (PT_A2)
-#define FPS_SR (PT_SR)
-#define FPS_PC (PT_PC)
-#define FPS_EA (PT_PC+6)
-#define FPS_PC2 (PT_PC+10)
-
-.macro fp_get_fp_reg
- lea (FPD_FPREG,FPDATA,%d0.w*4),%a0
- lea (%a0,%d0.w*8),%a0
-.endm
-
-/* Macros used to get/put the current program counter.
- * 020/030 use a different stack frame then 040/060, for the
- * 040/060 the return pc points already to the next location,
- * so this only needs to be modified for jump instructions.
- */
-.macro fp_get_pc dest
- move.l (FPS_PC+4,%sp),\dest
-.endm
-
-.macro fp_put_pc src,jump=0
- move.l \src,(FPS_PC+4,%sp)
-.endm
-
-.macro fp_get_instr_data f,s,dest,label
- getuser \f,%sp@(FPS_PC+4)@(0),\dest,\label,%sp@(FPS_PC+4)
- addq.l #\s,%sp@(FPS_PC+4)
-.endm
-
-.macro fp_get_instr_word dest,label,addr
- fp_get_instr_data w,2,\dest,\label,\addr
-.endm
-
-.macro fp_get_instr_long dest,label,addr
- fp_get_instr_data l,4,\dest,\label,\addr
-.endm
-
-/* These macros are used to read from/write to user space
- * on error we jump to the fixup section, load the fault
- * address into %a0 and jump to the exit.
- * (derived from <asm/uaccess.h>)
- */
-.macro getuser size,src,dest,label,addr
-| printf ,"[\size<%08x]",1,\addr
-.Lu1\@: moves\size \src,\dest
-
- .section .fixup,"ax"
- .even
-.Lu2\@: move.l \addr,%a0
- jra \label
- .previous
-
- .section __ex_table,"a"
- .align 4
- .long .Lu1\@,.Lu2\@
- .previous
-.endm
-
-.macro putuser size,src,dest,label,addr
-| printf ,"[\size>%08x]",1,\addr
-.Lu1\@: moves\size \src,\dest
-.Lu2\@:
-
- .section .fixup,"ax"
- .even
-.Lu3\@: move.l \addr,%a0
- jra \label
- .previous
-
- .section __ex_table,"a"
- .align 4
- .long .Lu1\@,.Lu3\@
- .long .Lu2\@,.Lu3\@
- .previous
-.endm
-
-
-.macro movestack nr,arg1,arg2,arg3,arg4,arg5
- .if \nr
- movestack (\nr-1),\arg2,\arg3,\arg4,\arg5
- move.l \arg1,-(%sp)
- .endif
-.endm
-
-.macro printf bit=-1,string,nr=0,arg1,arg2,arg3,arg4,arg5
-#ifdef FPU_EMU_DEBUG
- .data
-.Lpdata\@:
- .string "\string"
- .previous
-
- movem.l %d0/%d1/%a0/%a1,-(%sp)
- .if \bit+1
-#if 0
- moveq #\bit,%d0
- andw #7,%d0
- btst %d0,fp_debugprint+((31-\bit)/8)
-#else
- btst #\bit,fp_debugprint+((31-\bit)/8)
-#endif
- jeq .Lpskip\@
- .endif
- movestack \nr,\arg1,\arg2,\arg3,\arg4,\arg5
- pea .Lpdata\@
- jsr printk
- lea ((\nr+1)*4,%sp),%sp
-.Lpskip\@:
- movem.l (%sp)+,%d0/%d1/%a0/%a1
-#endif
-.endm
-
-.macro printx bit,fp
-#ifdef FPU_EMU_DEBUG
- movem.l %d0/%a0,-(%sp)
- lea \fp,%a0
-#if 0
- moveq #'+',%d0
- tst.w (%a0)
- jeq .Lx1\@
- moveq #'-',%d0
-.Lx1\@: printf \bit," %c",1,%d0
- move.l (4,%a0),%d0
- bclr #31,%d0
- jne .Lx2\@
- printf \bit,"0."
- jra .Lx3\@
-.Lx2\@: printf \bit,"1."
-.Lx3\@: printf \bit,"%08x%08x",2,%d0,%a0@(8)
- move.w (2,%a0),%d0
- ext.l %d0
- printf \bit,"E%04x",1,%d0
-#else
- printf \bit," %08x%08x%08x",3,%a0@,%a0@(4),%a0@(8)
-#endif
- movem.l (%sp)+,%d0/%a0
-#endif
-.endm
-
-.macro debug instr,args
-#ifdef FPU_EMU_DEBUG
- \instr \args
-#endif
-.endm
-
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* _ASM_FRV_MATH_EMU_H */
-
+++ /dev/null
-/* mb-regs.h: motherboard registers
- *
- * Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MB_REGS_H
-#define _ASM_MB_REGS_H
-
-#include <asm/cpu-irqs.h>
-#include <asm/sections.h>
-#include <asm/mem-layout.h>
-
-#ifndef __ASSEMBLY__
-/* gcc builtins, annotated */
-
-unsigned long __builtin_read8(volatile void __iomem *);
-unsigned long __builtin_read16(volatile void __iomem *);
-unsigned long __builtin_read32(volatile void __iomem *);
-void __builtin_write8(volatile void __iomem *, unsigned char);
-void __builtin_write16(volatile void __iomem *, unsigned short);
-void __builtin_write32(volatile void __iomem *, unsigned long);
-#endif
-
-#define __region_IO KERNEL_IO_START /* the region from 0xe0000000 to 0xffffffff has suitable
- * protection laid over the top for use in memory-mapped
- * I/O
- */
-
-#define __region_CS0 0xff000000 /* Boot ROMs area */
-
-#ifdef CONFIG_MB93091_VDK
-/*
- * VDK motherboard and CPU card specific stuff
- */
-
-#include <asm/mb93091-fpga-irqs.h>
-
-#define IRQ_CPU_MB93493_0 IRQ_CPU_EXTERNAL0
-#define IRQ_CPU_MB93493_1 IRQ_CPU_EXTERNAL1
-
-#define __region_CS2 0xe0000000 /* SLBUS/PCI I/O space */
-#define __region_CS2_M 0x0fffffff /* mask */
-#define __region_CS2_C 0x00000000 /* control */
-#define __region_CS5 0xf0000000 /* MB93493 CSC area (DAV daughter board) */
-#define __region_CS5_M 0x00ffffff
-#define __region_CS5_C 0x00010000
-#define __region_CS7 0xf1000000 /* CB70 CPU-card PCMCIA port I/O space */
-#define __region_CS7_M 0x00ffffff
-#define __region_CS7_C 0x00410701
-#define __region_CS1 0xfc000000 /* SLBUS/PCI bridge control registers */
-#define __region_CS1_M 0x000fffff
-#define __region_CS1_C 0x00000000
-#define __region_CS6 0xfc100000 /* CB70 CPU-card DM9000 LAN I/O space */
-#define __region_CS6_M 0x000fffff
-#define __region_CS6_C 0x00400707
-#define __region_CS3 0xfc200000 /* MB93493 CSR area (DAV daughter board) */
-#define __region_CS3_M 0x000fffff
-#define __region_CS3_C 0xc8100000
-#define __region_CS4 0xfd000000 /* CB70 CPU-card extra flash space */
-#define __region_CS4_M 0x00ffffff
-#define __region_CS4_C 0x00000f07
-
-#define __region_PCI_IO (__region_CS2 + 0x04000000UL)
-#define __region_PCI_MEM (__region_CS2 + 0x08000000UL)
-#define __flush_PCI_writes() \
-do { \
- __builtin_write8((volatile void __iomem *) __region_PCI_MEM, 0); \
-} while(0)
-
-#define __is_PCI_IO(addr) \
- (((unsigned long)(addr) >> 24) - (__region_PCI_IO >> 24) < (0x04000000UL >> 24))
-
-#define __is_PCI_MEM(addr) \
- ((unsigned long)(addr) - __region_PCI_MEM < 0x08000000UL)
-
-#define __is_PCI_addr(addr) \
- ((unsigned long)(addr) - __region_PCI_IO < 0x0c000000UL)
-
-#define __get_CLKSW() ({ *(volatile unsigned long *)(__region_CS2 + 0x0130000cUL) & 0xffUL; })
-#define __get_CLKIN() (__get_CLKSW() * 125U * 100000U / 24U)
-
-#ifndef __ASSEMBLY__
-extern int __nongprelbss mb93090_mb00_detected;
-#endif
-
-#define __addr_LEDS() (__region_CS2 + 0x01200004UL)
-#ifdef CONFIG_MB93090_MB00
-#define __set_LEDS(X) \
-do { \
- if (mb93090_mb00_detected) \
- __builtin_write32((void __iomem *) __addr_LEDS(), ~(X)); \
-} while (0)
-#else
-#define __set_LEDS(X)
-#endif
-
-#define __addr_LCD() (__region_CS2 + 0x01200008UL)
-#define __get_LCD(B) __builtin_read32((volatile void __iomem *) (B))
-#define __set_LCD(B,X) __builtin_write32((volatile void __iomem *) (B), (X))
-
-#define LCD_D 0x000000ff /* LCD data bus */
-#define LCD_RW 0x00000100 /* LCD R/W signal */
-#define LCD_RS 0x00000200 /* LCD Register Select */
-#define LCD_E 0x00000400 /* LCD Start Enable Signal */
-
-#define LCD_CMD_CLEAR (LCD_E|0x001)
-#define LCD_CMD_HOME (LCD_E|0x002)
-#define LCD_CMD_CURSOR_INC (LCD_E|0x004)
-#define LCD_CMD_SCROLL_INC (LCD_E|0x005)
-#define LCD_CMD_CURSOR_DEC (LCD_E|0x006)
-#define LCD_CMD_SCROLL_DEC (LCD_E|0x007)
-#define LCD_CMD_OFF (LCD_E|0x008)
-#define LCD_CMD_ON(CRSR,BLINK) (LCD_E|0x00c|(CRSR<<1)|BLINK)
-#define LCD_CMD_CURSOR_MOVE_L (LCD_E|0x010)
-#define LCD_CMD_CURSOR_MOVE_R (LCD_E|0x014)
-#define LCD_CMD_DISPLAY_SHIFT_L (LCD_E|0x018)
-#define LCD_CMD_DISPLAY_SHIFT_R (LCD_E|0x01c)
-#define LCD_CMD_FUNCSET(DL,N,F) (LCD_E|0x020|(DL<<4)|(N<<3)|(F<<2))
-#define LCD_CMD_SET_CG_ADDR(X) (LCD_E|0x040|X)
-#define LCD_CMD_SET_DD_ADDR(X) (LCD_E|0x080|X)
-#define LCD_CMD_READ_BUSY (LCD_E|LCD_RW)
-#define LCD_DATA_WRITE(X) (LCD_E|LCD_RS|(X))
-#define LCD_DATA_READ (LCD_E|LCD_RS|LCD_RW)
-
-#else
-/*
- * PDK unit specific stuff
- */
-
-#include <asm/mb93093-fpga-irqs.h>
-
-#define IRQ_CPU_MB93493_0 IRQ_CPU_EXTERNAL0
-#define IRQ_CPU_MB93493_1 IRQ_CPU_EXTERNAL1
-
-#define __region_CS5 0xf0000000 /* MB93493 CSC area (DAV daughter board) */
-#define __region_CS5_M 0x00ffffff /* mask */
-#define __region_CS5_C 0x00010000 /* control */
-#define __region_CS2 0x20000000 /* FPGA registers */
-#define __region_CS2_M 0x000fffff
-#define __region_CS2_C 0x00000000
-#define __region_CS1 0xfc100000 /* LAN registers */
-#define __region_CS1_M 0x000fffff
-#define __region_CS1_C 0x00010404
-#define __region_CS3 0xfc200000 /* MB93493 CSR area (DAV daughter board) */
-#define __region_CS3_M 0x000fffff
-#define __region_CS3_C 0xc8000000
-#define __region_CS4 0xfd000000 /* extra ROMs area */
-#define __region_CS4_M 0x00ffffff
-#define __region_CS4_C 0x00000f07
-
-#define __region_CS6 0xfe000000 /* not used - hide behind CPU resource I/O regs */
-#define __region_CS6_M 0x000fffff
-#define __region_CS6_C 0x00000f07
-#define __region_CS7 0xfe000000 /* not used - hide behind CPU resource I/O regs */
-#define __region_CS7_M 0x000fffff
-#define __region_CS7_C 0x00000f07
-
-#define __is_PCI_IO(addr) 0 /* no PCI */
-#define __is_PCI_MEM(addr) 0
-#define __is_PCI_addr(addr) 0
-#define __region_PCI_IO 0
-#define __region_PCI_MEM 0
-#define __flush_PCI_writes() do { } while(0)
-
-#define __get_CLKSW() 0UL
-#define __get_CLKIN() 66000000UL
-
-#define __addr_LEDS() (__region_CS2 + 0x00000023UL)
-#define __set_LEDS(X) __builtin_write8((volatile void __iomem *) __addr_LEDS(), (X))
-
-#define __addr_FPGATR() (__region_CS2 + 0x00000030UL)
-#define __set_FPGATR(X) __builtin_write32((volatile void __iomem *) __addr_FPGATR(), (X))
-#define __get_FPGATR() __builtin_read32((volatile void __iomem *) __addr_FPGATR())
-
-#define MB93093_FPGA_FPGATR_AUDIO_CLK 0x00000003
-
-#define __set_FPGATR_AUDIO_CLK(V) \
- __set_FPGATR((__get_FPGATR() & ~MB93093_FPGA_FPGATR_AUDIO_CLK) | (V))
-
-#define MB93093_FPGA_FPGATR_AUDIO_CLK_OFF 0x0
-#define MB93093_FPGA_FPGATR_AUDIO_CLK_11MHz 0x1
-#define MB93093_FPGA_FPGATR_AUDIO_CLK_12MHz 0x2
-#define MB93093_FPGA_FPGATR_AUDIO_CLK_02MHz 0x3
-
-#define MB93093_FPGA_SWR_PUSHSWMASK (0x1F<<26)
-#define MB93093_FPGA_SWR_PUSHSW4 (1<<29)
-
-#define __addr_FPGA_SWR ((volatile void __iomem *)(__region_CS2 + 0x28UL))
-#define __get_FPGA_PUSHSW1_5() (__builtin_read32(__addr_FPGA_SWR) & MB93093_FPGA_SWR_PUSHSWMASK)
-
-
-#endif
-
-#endif /* _ASM_MB_REGS_H */
+++ /dev/null
-/* mb86943a.h: MB86943 SPARClite <-> PCI bridge registers
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MB86943A_H
-#define _ASM_MB86943A_H
-
-#include <asm/mb-regs.h>
-
-#define __reg_MB86943_sl_ctl *(volatile uint32_t *) (__region_CS1 + 0x00)
-
-#define MB86943_SL_CTL_BUS_WIDTH_64 0x00000001
-#define MB86943_SL_CTL_AS_HOST 0x00000002
-#define MB86943_SL_CTL_DRCT_MASTER_SWAP 0x00000004
-#define MB86943_SL_CTL_DRCT_SLAVE_SWAP 0x00000008
-#define MB86943_SL_CTL_PCI_CONFIG_SWAP 0x00000010
-#define MB86943_SL_CTL_ECS0_ENABLE 0x00000020
-#define MB86943_SL_CTL_ECS1_ENABLE 0x00000040
-#define MB86943_SL_CTL_ECS2_ENABLE 0x00000080
-
-#define __reg_MB86943_ecs_ctl(N) *(volatile uint32_t *) (__region_CS1 + 0x08 + (0x08*(N)))
-#define __reg_MB86943_ecs_range(N) *(volatile uint32_t *) (__region_CS1 + 0x20 + (0x10*(N)))
-#define __reg_MB86943_ecs_base(N) *(volatile uint32_t *) (__region_CS1 + 0x28 + (0x10*(N)))
-
-#define __reg_MB86943_sl_pci_io_range *(volatile uint32_t *) (__region_CS1 + 0x50)
-#define __reg_MB86943_sl_pci_io_base *(volatile uint32_t *) (__region_CS1 + 0x58)
-#define __reg_MB86943_sl_pci_mem_range *(volatile uint32_t *) (__region_CS1 + 0x60)
-#define __reg_MB86943_sl_pci_mem_base *(volatile uint32_t *) (__region_CS1 + 0x68)
-#define __reg_MB86943_pci_sl_io_base *(volatile uint32_t *) (__region_CS1 + 0x70)
-#define __reg_MB86943_pci_sl_mem_base *(volatile uint32_t *) (__region_CS1 + 0x78)
-
-#define __reg_MB86943_pci_arbiter *(volatile uint32_t *) (__region_CS2 + 0x01300014)
-#define MB86943_PCIARB_EN 0x00000001
-
-#endif /* _ASM_MB86943A_H */
+++ /dev/null
-/* mb93091-fpga-irqs.h: MB93091 CPU board FPGA IRQs
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MB93091_FPGA_IRQS_H
-#define _ASM_MB93091_FPGA_IRQS_H
-
-#include <asm/irq.h>
-
-#ifndef __ASSEMBLY__
-
-/* IRQ IDs presented to drivers */
-enum {
- IRQ_FPGA__UNUSED = IRQ_BASE_FPGA,
- IRQ_FPGA_SYSINT_BUS_EXPANSION_1,
- IRQ_FPGA_SL_BUS_EXPANSION_2,
- IRQ_FPGA_PCI_INTD,
- IRQ_FPGA_PCI_INTC,
- IRQ_FPGA_PCI_INTB,
- IRQ_FPGA_PCI_INTA,
- IRQ_FPGA_SL_BUS_EXPANSION_7,
- IRQ_FPGA_SYSINT_BUS_EXPANSION_8,
- IRQ_FPGA_SL_BUS_EXPANSION_9,
- IRQ_FPGA_MB86943_PCI_INTA,
- IRQ_FPGA_MB86943_SLBUS_SIDE,
- IRQ_FPGA_RTL8029_INTA,
- IRQ_FPGA_SYSINT_BUS_EXPANSION_13,
- IRQ_FPGA_SL_BUS_EXPANSION_14,
- IRQ_FPGA_NMI,
-};
-
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_MB93091_FPGA_IRQS_H */
+++ /dev/null
-/* mb93093-fpga-irqs.h: MB93093 CPU board FPGA IRQs
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MB93093_FPGA_IRQS_H
-#define _ASM_MB93093_FPGA_IRQS_H
-
-#include <asm/irq.h>
-
-#ifndef __ASSEMBLY__
-
-/* IRQ IDs presented to drivers */
-enum {
- IRQ_FPGA_PUSH_BUTTON_SW1_5 = IRQ_BASE_FPGA + 8,
- IRQ_FPGA_ROCKER_C_SW8 = IRQ_BASE_FPGA + 9,
- IRQ_FPGA_ROCKER_C_SW9 = IRQ_BASE_FPGA + 10,
-};
-
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_MB93093_FPGA_IRQS_H */
+++ /dev/null
-/* mb93493-irqs.h: MB93493 companion chip IRQs
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MB93493_IRQS_H
-#define _ASM_MB93493_IRQS_H
-
-#include <asm/irq.h>
-
-#ifndef __ASSEMBLY__
-
-/* IRQ IDs presented to drivers */
-enum {
- IRQ_MB93493_VDC = IRQ_BASE_MB93493 + 0,
- IRQ_MB93493_VCC = IRQ_BASE_MB93493 + 1,
- IRQ_MB93493_AUDIO_OUT = IRQ_BASE_MB93493 + 2,
- IRQ_MB93493_I2C_0 = IRQ_BASE_MB93493 + 3,
- IRQ_MB93493_I2C_1 = IRQ_BASE_MB93493 + 4,
- IRQ_MB93493_USB = IRQ_BASE_MB93493 + 5,
- IRQ_MB93493_LOCAL_BUS = IRQ_BASE_MB93493 + 7,
- IRQ_MB93493_PCMCIA = IRQ_BASE_MB93493 + 8,
- IRQ_MB93493_GPIO = IRQ_BASE_MB93493 + 9,
- IRQ_MB93493_AUDIO_IN = IRQ_BASE_MB93493 + 10,
-};
-
-/* IRQ multiplexor mappings */
-#define ROUTE_VIA_IRQ0 0 /* route IRQ by way of CPU external IRQ 0 */
-#define ROUTE_VIA_IRQ1 1 /* route IRQ by way of CPU external IRQ 1 */
-
-#define IRQ_MB93493_VDC_ROUTE ROUTE_VIA_IRQ0
-#define IRQ_MB93493_VCC_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_AUDIO_OUT_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_I2C_0_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_I2C_1_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_USB_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_LOCAL_BUS_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_PCMCIA_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_GPIO_ROUTE ROUTE_VIA_IRQ1
-#define IRQ_MB93493_AUDIO_IN_ROUTE ROUTE_VIA_IRQ1
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_MB93493_IRQS_H */
+++ /dev/null
-/* mb93493-regs.h: MB93493 companion chip registers
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MB93493_REGS_H
-#define _ASM_MB93493_REGS_H
-
-#include <asm/mb-regs.h>
-#include <asm/mb93493-irqs.h>
-
-#define __addr_MB93493(X) ((volatile unsigned long *)(__region_CS3 + (X)))
-#define __get_MB93493(X) ({ *(volatile unsigned long *)(__region_CS3 + (X)); })
-
-#define __set_MB93493(X,V) \
-do { \
- *(volatile unsigned long *)(__region_CS3 + (X)) = (V); mb(); \
-} while(0)
-
-#define __get_MB93493_STSR(X) __get_MB93493(0x3c0 + (X) * 4)
-#define __set_MB93493_STSR(X,V) __set_MB93493(0x3c0 + (X) * 4, (V))
-#define MB93493_STSR_EN
-
-#define __addr_MB93493_IQSR(X) __addr_MB93493(0x3d0 + (X) * 4)
-#define __get_MB93493_IQSR(X) __get_MB93493(0x3d0 + (X) * 4)
-#define __set_MB93493_IQSR(X,V) __set_MB93493(0x3d0 + (X) * 4, (V))
-
-#define __get_MB93493_DQSR(X) __get_MB93493(0x3e0 + (X) * 4)
-#define __set_MB93493_DQSR(X,V) __set_MB93493(0x3e0 + (X) * 4, (V))
-
-#define __get_MB93493_LBSER() __get_MB93493(0x3f0)
-#define __set_MB93493_LBSER(V) __set_MB93493(0x3f0, (V))
-
-#define MB93493_LBSER_VDC 0x00010000
-#define MB93493_LBSER_VCC 0x00020000
-#define MB93493_LBSER_AUDIO 0x00040000
-#define MB93493_LBSER_I2C_0 0x00080000
-#define MB93493_LBSER_I2C_1 0x00100000
-#define MB93493_LBSER_USB 0x00200000
-#define MB93493_LBSER_GPIO 0x00800000
-#define MB93493_LBSER_PCMCIA 0x01000000
-
-#define __get_MB93493_LBSR() __get_MB93493(0x3fc)
-#define __set_MB93493_LBSR(V) __set_MB93493(0x3fc, (V))
-
-/*
- * video display controller
- */
-#define __get_MB93493_VDC(X) __get_MB93493(MB93493_VDC_##X)
-#define __set_MB93493_VDC(X,V) __set_MB93493(MB93493_VDC_##X, (V))
-
-#define MB93493_VDC_RCURSOR 0x140 /* cursor position */
-#define MB93493_VDC_RCT1 0x144 /* cursor colour 1 */
-#define MB93493_VDC_RCT2 0x148 /* cursor colour 2 */
-#define MB93493_VDC_RHDC 0x150 /* horizontal display period */
-#define MB93493_VDC_RH_MARGINS 0x154 /* horizontal margin sizes */
-#define MB93493_VDC_RVDC 0x158 /* vertical display period */
-#define MB93493_VDC_RV_MARGINS 0x15c /* vertical margin sizes */
-#define MB93493_VDC_RC 0x170 /* VDC control */
-#define MB93493_VDC_RCLOCK 0x174 /* clock divider, DMA req delay */
-#define MB93493_VDC_RBLACK 0x178 /* black insert sizes */
-#define MB93493_VDC_RS 0x17c /* VDC status */
-
-#define __addr_MB93493_VDC_BCI(X) ({ (volatile unsigned long *)(__region_CS3 + 0x000 + (X)); })
-#define __addr_MB93493_VDC_TPO(X) (__region_CS3 + 0x1c0 + (X))
-
-#define VDC_TPO_WIDTH 32
-
-#define VDC_RC_DSR 0x00000080 /* VDC master reset */
-
-#define VDC_RS_IT 0x00060000 /* interrupt indicators */
-#define VDC_RS_IT_UNDERFLOW 0x00040000 /* - underflow event */
-#define VDC_RS_IT_VSYNC 0x00020000 /* - VSYNC event */
-#define VDC_RS_DFI 0x00010000 /* current interlace field number */
-#define VDC_RS_DFI_TOP 0x00000000 /* - top field */
-#define VDC_RS_DFI_BOTTOM 0x00010000 /* - bottom field */
-#define VDC_RS_DCSR 0x00000010 /* cursor state */
-#define VDC_RS_DCM 0x00000003 /* display mode */
-#define VDC_RS_DCM_DISABLED 0x00000000 /* - display disabled */
-#define VDC_RS_DCM_STOPPED 0x00000001 /* - VDC stopped */
-#define VDC_RS_DCM_FREERUNNING 0x00000002 /* - VDC free-running */
-#define VDC_RS_DCM_TRANSFERRING 0x00000003 /* - data being transferred to VDC */
-
-/*
- * video capture controller
- */
-#define __get_MB93493_VCC(X) __get_MB93493(MB93493_VCC_##X)
-#define __set_MB93493_VCC(X,V) __set_MB93493(MB93493_VCC_##X, (V))
-
-#define MB93493_VCC_RREDUCT 0x104 /* reduction rate */
-#define MB93493_VCC_RHY 0x108 /* horizontal brightness filter coefficients */
-#define MB93493_VCC_RHC 0x10c /* horizontal colour-difference filter coefficients */
-#define MB93493_VCC_RHSIZE 0x110 /* horizontal cycle sizes */
-#define MB93493_VCC_RHBC 0x114 /* horizontal back porch size */
-#define MB93493_VCC_RVCC 0x118 /* vertical capture period */
-#define MB93493_VCC_RVBC 0x11c /* vertical back porch period */
-#define MB93493_VCC_RV 0x120 /* vertical filter coefficients */
-#define MB93493_VCC_RDTS 0x128 /* DMA transfer size */
-#define MB93493_VCC_RDTS_4B 0x01000000 /* 4-byte transfer */
-#define MB93493_VCC_RDTS_32B 0x03000000 /* 32-byte transfer */
-#define MB93493_VCC_RDTS_SHIFT 24
-#define MB93493_VCC_RCC 0x130 /* VCC control */
-#define MB93493_VCC_RIS 0x134 /* VCC interrupt status */
-
-#define __addr_MB93493_VCC_TPI(X) (__region_CS3 + 0x180 + (X))
-
-#define VCC_RHSIZE_RHCC 0x000007ff
-#define VCC_RHSIZE_RHCC_SHIFT 0
-#define VCC_RHSIZE_RHTCC 0x0fff0000
-#define VCC_RHSIZE_RHTCC_SHIFT 16
-
-#define VCC_RVBC_RVBC 0x00003f00
-#define VCC_RVBC_RVBC_SHIFT 8
-
-#define VCC_RREDUCT_RHR 0x07ff0000
-#define VCC_RREDUCT_RHR_SHIFT 16
-#define VCC_RREDUCT_RVR 0x000007ff
-#define VCC_RREDUCT_RVR_SHIFT 0
-
-#define VCC_RCC_CE 0x00000001 /* VCC enable */
-#define VCC_RCC_CS 0x00000002 /* request video capture start */
-#define VCC_RCC_CPF 0x0000000c /* pixel format */
-#define VCC_RCC_CPF_YCBCR_16 0x00000000 /* - YCbCr 4:2:2 16-bit format */
-#define VCC_RCC_CPF_RGB 0x00000004 /* - RGB 4:4:4 format */
-#define VCC_RCC_CPF_YCBCR_24 0x00000008 /* - YCbCr 4:2:2 24-bit format */
-#define VCC_RCC_CPF_BT656 0x0000000c /* - ITU R-BT.656 format */
-#define VCC_RCC_CPF_SHIFT 2
-#define VCC_RCC_CSR 0x00000080 /* request reset */
-#define VCC_RCC_HSIP 0x00000100 /* HSYNC polarity */
-#define VCC_RCC_HSIP_LOACT 0x00000000 /* - low active */
-#define VCC_RCC_HSIP_HIACT 0x00000100 /* - high active */
-#define VCC_RCC_VSIP 0x00000200 /* VSYNC polarity */
-#define VCC_RCC_VSIP_LOACT 0x00000000 /* - low active */
-#define VCC_RCC_VSIP_HIACT 0x00000200 /* - high active */
-#define VCC_RCC_CIE 0x00000800 /* interrupt enable */
-#define VCC_RCC_CFP 0x00001000 /* RGB pixel packing */
-#define VCC_RCC_CFP_4TO3 0x00000000 /* - pack 4 pixels into 3 words */
-#define VCC_RCC_CFP_1TO1 0x00001000 /* - pack 1 pixel into 1 words */
-#define VCC_RCC_CSM 0x00006000 /* interlace specification */
-#define VCC_RCC_CSM_ONEPASS 0x00002000 /* - non-interlaced */
-#define VCC_RCC_CSM_INTERLACE 0x00004000 /* - interlaced */
-#define VCC_RCC_CSM_SHIFT 13
-#define VCC_RCC_ES 0x00008000 /* capture start polarity */
-#define VCC_RCC_ES_NEG 0x00000000 /* - negative edge */
-#define VCC_RCC_ES_POS 0x00008000 /* - positive edge */
-#define VCC_RCC_IFI 0x00080000 /* inferlace field evaluation reverse */
-#define VCC_RCC_FDTS 0x00300000 /* interlace field start */
-#define VCC_RCC_FDTS_3_8 0x00000000 /* - 3/8 of horizontal entire cycle */
-#define VCC_RCC_FDTS_1_4 0x00100000 /* - 1/4 of horizontal entire cycle */
-#define VCC_RCC_FDTS_7_16 0x00200000 /* - 7/16 of horizontal entire cycle */
-#define VCC_RCC_FDTS_SHIFT 20
-#define VCC_RCC_MOV 0x00400000 /* test bit - always set to 1 */
-#define VCC_RCC_STP 0x00800000 /* request video capture stop */
-#define VCC_RCC_TO 0x01000000 /* input during top-field only */
-
-#define VCC_RIS_VSYNC 0x01000000 /* VSYNC interrupt */
-#define VCC_RIS_OV 0x02000000 /* overflow interrupt */
-#define VCC_RIS_BOTTOM 0x08000000 /* interlace bottom field */
-#define VCC_RIS_STARTED 0x10000000 /* capture started */
-
-/*
- * I2C
- */
-#define MB93493_I2C_BSR 0x340 /* bus status */
-#define MB93493_I2C_BCR 0x344 /* bus control */
-#define MB93493_I2C_CCR 0x348 /* clock control */
-#define MB93493_I2C_ADR 0x34c /* address */
-#define MB93493_I2C_DTR 0x350 /* data */
-#define MB93493_I2C_BC2R 0x35c /* bus control 2 */
-
-#define __addr_MB93493_I2C(port,X) (__region_CS3 + MB93493_I2C_##X + ((port)*0x20))
-#define __get_MB93493_I2C(port,X) __get_MB93493(MB93493_I2C_##X + ((port)*0x20))
-#define __set_MB93493_I2C(port,X,V) __set_MB93493(MB93493_I2C_##X + ((port)*0x20), (V))
-
-#define I2C_BSR_BB (1 << 7)
-
-/*
- * audio controller (I2S) registers
- */
-#define __get_MB93493_I2S(X) __get_MB93493(MB93493_I2S_##X)
-#define __set_MB93493_I2S(X,V) __set_MB93493(MB93493_I2S_##X, (V))
-
-#define MB93493_I2S_ALDR 0x300 /* L-channel data */
-#define MB93493_I2S_ARDR 0x304 /* R-channel data */
-#define MB93493_I2S_APDR 0x308 /* 16-bit packed data */
-#define MB93493_I2S_AISTR 0x310 /* status */
-#define MB93493_I2S_AICR 0x314 /* control */
-
-#define __addr_MB93493_I2S_ALDR(X) (__region_CS3 + MB93493_I2S_ALDR + (X))
-#define __addr_MB93493_I2S_ARDR(X) (__region_CS3 + MB93493_I2S_ARDR + (X))
-#define __addr_MB93493_I2S_APDR(X) (__region_CS3 + MB93493_I2S_APDR + (X))
-#define __addr_MB93493_I2S_ADR(X) (__region_CS3 + 0x320 + (X))
-
-#define I2S_AISTR_OTST 0x00000003 /* status of output data transfer */
-#define I2S_AISTR_OTR 0x00000010 /* output transfer request pending */
-#define I2S_AISTR_OUR 0x00000020 /* output FIFO underrun detected */
-#define I2S_AISTR_OOR 0x00000040 /* output FIFO overrun detected */
-#define I2S_AISTR_ODS 0x00000100 /* output DMA transfer size */
-#define I2S_AISTR_ODE 0x00000400 /* output DMA transfer request enable */
-#define I2S_AISTR_OTRIE 0x00001000 /* output transfer request interrupt enable */
-#define I2S_AISTR_OURIE 0x00002000 /* output FIFO underrun interrupt enable */
-#define I2S_AISTR_OORIE 0x00004000 /* output FIFO overrun interrupt enable */
-#define I2S_AISTR__OUT_MASK 0x00007570
-#define I2S_AISTR_ITST 0x00030000 /* status of input data transfer */
-#define I2S_AISTR_ITST_SHIFT 16
-#define I2S_AISTR_ITR 0x00100000 /* input transfer request pending */
-#define I2S_AISTR_IUR 0x00200000 /* input FIFO underrun detected */
-#define I2S_AISTR_IOR 0x00400000 /* input FIFO overrun detected */
-#define I2S_AISTR_IDS 0x01000000 /* input DMA transfer size */
-#define I2S_AISTR_IDE 0x04000000 /* input DMA transfer request enable */
-#define I2S_AISTR_ITRIE 0x10000000 /* input transfer request interrupt enable */
-#define I2S_AISTR_IURIE 0x20000000 /* input FIFO underrun interrupt enable */
-#define I2S_AISTR_IORIE 0x40000000 /* input FIFO overrun interrupt enable */
-#define I2S_AISTR__IN_MASK 0x75700000
-
-#define I2S_AICR_MI 0x00000001 /* mono input requested */
-#define I2S_AICR_AMI 0x00000002 /* relation between LRCKI/FS1 and SDI */
-#define I2S_AICR_LRI 0x00000004 /* function of LRCKI pin */
-#define I2S_AICR_SDMI 0x00000070 /* format of input audio data */
-#define I2S_AICR_SDMI_SHIFT 4
-#define I2S_AICR_CLI 0x00000080 /* input FIFO clearing control */
-#define I2S_AICR_IM 0x00000300 /* input state control */
-#define I2S_AICR_IM_SHIFT 8
-#define I2S_AICR__IN_MASK 0x000003f7
-#define I2S_AICR_MO 0x00001000 /* mono output requested */
-#define I2S_AICR_AMO 0x00002000 /* relation between LRCKO/FS0 and SDO */
-#define I2S_AICR_AMO_SHIFT 13
-#define I2S_AICR_LRO 0x00004000 /* function of LRCKO pin */
-#define I2S_AICR_SDMO 0x00070000 /* format of output audio data */
-#define I2S_AICR_SDMO_SHIFT 16
-#define I2S_AICR_CLO 0x00080000 /* output FIFO clearing control */
-#define I2S_AICR_OM 0x00100000 /* output state control */
-#define I2S_AICR__OUT_MASK 0x001f7000
-#define I2S_AICR_DIV 0x03000000 /* frequency division rate */
-#define I2S_AICR_DIV_SHIFT 24
-#define I2S_AICR_FL 0x20000000 /* frame length */
-#define I2S_AICR_FS 0x40000000 /* frame sync method */
-#define I2S_AICR_ME 0x80000000 /* master enable */
-
-/*
- * PCMCIA
- */
-#define __addr_MB93493_PCMCIA(X) ((volatile unsigned long *)(__region_CS5 + (X)))
-
-/*
- * GPIO
- */
-#define __get_MB93493_GPIO_PDR(X) __get_MB93493(0x380 + (X) * 0xc0)
-#define __set_MB93493_GPIO_PDR(X,V) __set_MB93493(0x380 + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_GPDR(X) __get_MB93493(0x384 + (X) * 0xc0)
-#define __set_MB93493_GPIO_GPDR(X,V) __set_MB93493(0x384 + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_SIR(X) __get_MB93493(0x388 + (X) * 0xc0)
-#define __set_MB93493_GPIO_SIR(X,V) __set_MB93493(0x388 + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_SOR(X) __get_MB93493(0x38c + (X) * 0xc0)
-#define __set_MB93493_GPIO_SOR(X,V) __set_MB93493(0x38c + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_PDSR(X) __get_MB93493(0x390 + (X) * 0xc0)
-#define __set_MB93493_GPIO_PDSR(X,V) __set_MB93493(0x390 + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_PDCR(X) __get_MB93493(0x394 + (X) * 0xc0)
-#define __set_MB93493_GPIO_PDCR(X,V) __set_MB93493(0x394 + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_INTST(X) __get_MB93493(0x398 + (X) * 0xc0)
-#define __set_MB93493_GPIO_INTST(X,V) __set_MB93493(0x398 + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_IEHL(X) __get_MB93493(0x39c + (X) * 0xc0)
-#define __set_MB93493_GPIO_IEHL(X,V) __set_MB93493(0x39c + (X) * 0xc0, (V))
-
-#define __get_MB93493_GPIO_IELH(X) __get_MB93493(0x3a0 + (X) * 0xc0)
-#define __set_MB93493_GPIO_IELH(X,V) __set_MB93493(0x3a0 + (X) * 0xc0, (V))
-
-#endif /* _ASM_MB93493_REGS_H */
+++ /dev/null
-/* mem-layout.h: memory layout
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MEM_LAYOUT_H
-#define _ASM_MEM_LAYOUT_H
-
-#ifndef __ASSEMBLY__
-#define __UL(X) ((unsigned long) (X))
-#else
-#define __UL(X) (X)
-#endif
-
-/*
- * PAGE_SHIFT determines the page size
- */
-#define PAGE_SHIFT 14
-
-#ifndef __ASSEMBLY__
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
-#else
-#define PAGE_SIZE (1 << PAGE_SHIFT)
-#endif
-
-#define PAGE_MASK (~(PAGE_SIZE-1))
-
-/*
- * the slab must be aligned such that load- and store-double instructions don't
- * fault if used
- */
-#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
-#define ARCH_SLAB_MINALIGN L1_CACHE_BYTES
-
-/*****************************************************************************/
-/*
- * virtual memory layout from kernel's point of view
- */
-#define PAGE_OFFSET ((unsigned long) &__page_offset)
-
-#ifdef CONFIG_MMU
-
-/* see Documentation/frv/mmu-layout.txt */
-#define KERNEL_LOWMEM_START __UL(0xc0000000)
-#define KERNEL_LOWMEM_END __UL(0xd0000000)
-#define VMALLOC_START __UL(0xd0000000)
-#define VMALLOC_END __UL(0xd8000000)
-#define PKMAP_BASE __UL(0xd8000000)
-#define PKMAP_END __UL(0xdc000000)
-#define KMAP_ATOMIC_SECONDARY_FRAME __UL(0xdc000000)
-#define KMAP_ATOMIC_PRIMARY_FRAME __UL(0xdd000000)
-
-#endif
-
-#define KERNEL_IO_START __UL(0xe0000000)
-
-
-/*****************************************************************************/
-/*
- * memory layout from userspace's point of view
- */
-#define BRK_BASE __UL(2 * 1024 * 1024 + PAGE_SIZE)
-#define STACK_TOP __UL(2 * 1024 * 1024)
-#define STACK_TOP_MAX __UL(0xc0000000)
-
-/* userspace process size */
-#ifdef CONFIG_MMU
-#define TASK_SIZE (PAGE_OFFSET)
-#else
-#define TASK_SIZE __UL(0xFFFFFFFFUL)
-#endif
-
-/* base of area at which unspecified mmaps will start */
-#ifdef CONFIG_BINFMT_ELF_FDPIC
-#define TASK_UNMAPPED_BASE __UL(16 * 1024 * 1024)
-#else
-#define TASK_UNMAPPED_BASE __UL(TASK_SIZE / 3)
-#endif
-
-#endif /* _ASM_MEM_LAYOUT_H */
+++ /dev/null
-/* mmu.h: memory management context for FR-V with or without MMU support
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_MMU_H
-#define _ASM_MMU_H
-
-typedef struct {
-#ifdef CONFIG_MMU
- struct list_head id_link; /* link in list of context ID owners */
- unsigned short id; /* MMU context ID */
- unsigned short id_busy; /* true if ID is in CXNR */
- unsigned long itlb_cached_pge; /* [SCR0] PGE cached for insn TLB handler */
- unsigned long itlb_ptd_mapping; /* [DAMR4] PTD mapping for itlb cached PGE */
- unsigned long dtlb_cached_pge; /* [SCR1] PGE cached for data TLB handler */
- unsigned long dtlb_ptd_mapping; /* [DAMR5] PTD mapping for dtlb cached PGE */
-
-#else
- unsigned long end_brk;
-
-#endif
-
-#ifdef CONFIG_BINFMT_ELF_FDPIC
- unsigned long exec_fdpic_loadmap;
- unsigned long interp_fdpic_loadmap;
-#endif
-
-} mm_context_t;
-
-#ifdef CONFIG_MMU
-extern int __nongpreldata cxn_pinned;
-extern int cxn_pin_by_pid(pid_t pid);
-#endif
-
-#endif /* _ASM_MMU_H */
+++ /dev/null
-/* mmu_context.h: MMU context management routines
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_MMU_CONTEXT_H
-#define _ASM_MMU_CONTEXT_H
-
-#include <asm/setup.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm-generic/mm_hooks.h>
-
-static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
-{
-}
-
-#ifdef CONFIG_MMU
-extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
-extern void change_mm_context(mm_context_t *old, mm_context_t *ctx, pgd_t *_pgd);
-extern void destroy_context(struct mm_struct *mm);
-
-#else
-#define init_new_context(tsk, mm) ({ 0; })
-#define change_mm_context(old, ctx, _pml4) do {} while(0)
-#define destroy_context(mm) do {} while(0)
-#endif
-
-#define switch_mm(prev, next, tsk) \
-do { \
- if (prev != next) \
- change_mm_context(&prev->context, &next->context, next->pgd); \
-} while(0)
-
-#define activate_mm(prev, next) \
-do { \
- change_mm_context(&prev->context, &next->context, next->pgd); \
-} while(0)
-
-#define deactivate_mm(tsk, mm) \
-do { \
-} while(0)
-
-#endif
+++ /dev/null
-/* module.h: FRV module stuff
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_MODULE_H
-#define _ASM_MODULE_H
-
-#include <asm-generic/module.h>
-
-/*
- * Include the architecture version.
- */
-#define MODULE_ARCH_VERMAGIC __stringify(PROCESSOR_MODEL_NAME) " "
-
-#endif /* _ASM_MODULE_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_PAGE_H
-#define _ASM_PAGE_H
-
-#include <asm/virtconvert.h>
-#include <asm/mem-layout.h>
-#include <asm/sections.h>
-#include <asm/setup.h>
-
-#ifndef __ASSEMBLY__
-
-#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
-#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
-
-#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
-#define copy_user_page(vto, vfrom, vaddr, topg) memcpy((vto), (vfrom), PAGE_SIZE)
-
-/*
- * These are used to make use of C type-checking..
- */
-typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long ste[64];} pmd_t;
-typedef struct { pmd_t pue[1]; } pud_t;
-typedef struct { pud_t pge[1]; } pgd_t;
-typedef struct { unsigned long pgprot; } pgprot_t;
-typedef struct page *pgtable_t;
-
-#define pte_val(x) ((x).pte)
-#define pmd_val(x) ((x).ste[0])
-#define pud_val(x) ((x).pue[0])
-#define pgd_val(x) ((x).pge[0])
-#define pgprot_val(x) ((x).pgprot)
-
-#define __pte(x) ((pte_t) { (x) } )
-#define __pmd(x) ((pmd_t) { { (x) } } )
-#define __pud(x) ((pud_t) { (x) } )
-#define __pgd(x) ((pgd_t) { (x) } )
-#define __pgprot(x) ((pgprot_t) { (x) } )
-#define PTE_MASK PAGE_MASK
-
-#define devmem_is_allowed(pfn) 1
-
-#define __pa(vaddr) virt_to_phys((void *) (unsigned long) (vaddr))
-#define __va(paddr) phys_to_virt((unsigned long) (paddr))
-
-#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
-
-extern unsigned long max_low_pfn;
-extern unsigned long min_low_pfn;
-extern unsigned long max_pfn;
-
-#ifdef CONFIG_MMU
-#define pfn_valid(pfn) ((pfn) < max_mapnr)
-#else
-#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
-#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
-
-#endif
-
-#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-
-
-#define VM_DATA_DEFAULT_FLAGS \
- (VM_READ | VM_WRITE | \
- ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#endif /* __ASSEMBLY__ */
-
-#include <asm-generic/memory_model.h>
-#include <asm-generic/getorder.h>
-
-#endif /* _ASM_PAGE_H */
+++ /dev/null
-/* pci.h: FR-V specific PCI declarations
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from include/asm-m68k/pci.h
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_FRV_PCI_H
-#define _ASM_FRV_PCI_H
-
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <asm-generic/pci.h>
-
-#define pcibios_assign_all_busses() 0
-
-#ifdef CONFIG_MMU
-extern void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle);
-extern void consistent_free(void *vaddr);
-extern void consistent_sync(void *vaddr, size_t size, int direction);
-extern void consistent_sync_page(struct page *page, unsigned long offset,
- size_t size, int direction);
-#endif
-
-/* Return the index of the PCI controller for device PDEV. */
-#define pci_controller_num(PDEV) (0)
-
-/*
- * These are pretty much arbitrary with the CoMEM implementation.
- * We have the whole address space to ourselves.
- */
-#define PCIBIOS_MIN_IO 0x100
-#define PCIBIOS_MIN_MEM 0x00010000
-
-#endif /* _ASM_FRV_PCI_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_PERCPU_H
-#define __ASM_PERCPU_H
-
-#include <asm-generic/percpu.h>
-
-#endif /* __ASM_PERCPU_H */
+++ /dev/null
-/* FRV performance event support
- *
- * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#ifndef _ASM_PERF_EVENT_H
-#define _ASM_PERF_EVENT_H
-
-#endif /* _ASM_PERF_EVENT_H */
+++ /dev/null
-/* pgalloc.h: Page allocation routines for FRV
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Derived from:
- * include/asm-m68knommu/pgalloc.h
- * include/asm-i386/pgalloc.h
- */
-#ifndef _ASM_PGALLOC_H
-#define _ASM_PGALLOC_H
-
-#include <asm/setup.h>
-#include <asm/virtconvert.h>
-
-#ifdef CONFIG_MMU
-
-#define pmd_populate_kernel(mm, pmd, pte) __set_pmd(pmd, __pa(pte) | _PAGE_TABLE)
-#define pmd_populate(MM, PMD, PAGE) \
-do { \
- __set_pmd((PMD), page_to_pfn(PAGE) << PAGE_SHIFT | _PAGE_TABLE); \
-} while(0)
-#define pmd_pgtable(pmd) pmd_page(pmd)
-
-/*
- * Allocate and free page tables.
- */
-
-extern pgd_t *pgd_alloc(struct mm_struct *);
-extern void pgd_free(struct mm_struct *mm, pgd_t *);
-
-extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
-
-extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_page((unsigned long)pte);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
- pgtable_page_dtor(pte);
- __free_page(pte);
-}
-
-#define __pte_free_tlb(tlb,pte,address) \
-do { \
- pgtable_page_dtor(pte); \
- tlb_remove_page((tlb),(pte)); \
-} while (0)
-
-/*
- * allocating and freeing a pmd is trivial: the 1-entry pmd is
- * inside the pgd, so has no extra memory associated with it.
- * (In the PAE case we free the pmds as part of the pgd.)
- */
-#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *) 2); })
-#define pmd_free(mm, x) do { } while (0)
-#define __pmd_free_tlb(tlb,x,a) do { } while (0)
-
-#endif /* CONFIG_MMU */
-
-#endif /* _ASM_PGALLOC_H */
+++ /dev/null
-/* pgtable.h: FR-V page table mangling
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Derived from:
- * include/asm-m68knommu/pgtable.h
- * include/asm-i386/pgtable.h
- */
-
-#ifndef _ASM_PGTABLE_H
-#define _ASM_PGTABLE_H
-
-#include <asm-generic/5level-fixup.h>
-#include <asm/mem-layout.h>
-#include <asm/setup.h>
-#include <asm/processor.h>
-
-#ifndef __ASSEMBLY__
-#include <linux/threads.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-#include <linux/spinlock.h>
-#include <linux/sched.h>
-struct vm_area_struct;
-#endif
-
-#ifndef __ASSEMBLY__
-#if defined(CONFIG_HIGHPTE)
-typedef unsigned long pte_addr_t;
-#else
-typedef pte_t *pte_addr_t;
-#endif
-#endif
-
-/*****************************************************************************/
-/*
- * MMU-less operation case first
- */
-#ifndef CONFIG_MMU
-
-#define pgd_present(pgd) (1) /* pages are always present on NO_MM */
-#define pgd_none(pgd) (0)
-#define pgd_bad(pgd) (0)
-#define pgd_clear(pgdp)
-#define kern_addr_valid(addr) (1)
-#define pmd_offset(a, b) ((void *) 0)
-
-#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */
-#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */
-#define PAGE_COPY __pgprot(0) /* these mean nothing to NO_MM */
-#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */
-#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */
-
-#define __swp_type(x) (0)
-#define __swp_offset(x) (0)
-#define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
-#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
-#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-
-#define ZERO_PAGE(vaddr) ({ BUG(); NULL; })
-
-#define swapper_pg_dir ((pgd_t *) NULL)
-
-#define pgtable_cache_init() do {} while (0)
-
-#include <asm-generic/pgtable.h>
-
-#else /* !CONFIG_MMU */
-/*****************************************************************************/
-/*
- * then MMU operation
- */
-
-/*
- * ZERO_PAGE is a global shared page that is always zero: used
- * for zero-mapped memory areas etc..
- */
-#ifndef __ASSEMBLY__
-extern unsigned long empty_zero_page;
-#define ZERO_PAGE(vaddr) virt_to_page(empty_zero_page)
-#endif
-
-/*
- * we use 2-level page tables, folding the PMD (mid-level table) into the PGE (top-level entry)
- * [see Documentation/frv/mmu-layout.txt]
- *
- * Page Directory:
- * - Size: 16KB
- * - 64 PGEs per PGD
- * - Each PGE holds 1 PUD and covers 64MB
- *
- * Page Upper Directory:
- * - Size: 256B
- * - 1 PUE per PUD
- * - Each PUE holds 1 PMD and covers 64MB
- *
- * Page Mid-Level Directory
- * - Size: 256B
- * - 1 PME per PMD
- * - Each PME holds 64 STEs, all of which point to separate chunks of the same Page Table
- * - All STEs are instantiated at the same time
- *
- * Page Table
- * - Size: 16KB
- * - 4096 PTEs per PT
- * - Each Linux PT is subdivided into 64 FR451 PT's, each of which holds 64 entries
- *
- * Pages
- * - Size: 4KB
- *
- * total PTEs
- * = 1 PML4E * 64 PGEs * 1 PUEs * 1 PMEs * 4096 PTEs
- * = 1 PML4E * 64 PGEs * 64 STEs * 64 PTEs/FR451-PT
- * = 262144 (or 256 * 1024)
- */
-#define PGDIR_SHIFT 26
-#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
-#define PGDIR_MASK (~(PGDIR_SIZE - 1))
-#define PTRS_PER_PGD 64
-
-#define __PAGETABLE_PUD_FOLDED
-#define PUD_SHIFT 26
-#define PTRS_PER_PUD 1
-#define PUD_SIZE (1UL << PUD_SHIFT)
-#define PUD_MASK (~(PUD_SIZE - 1))
-#define PUE_SIZE 256
-
-#define __PAGETABLE_PMD_FOLDED
-#define PMD_SHIFT 26
-#define PMD_SIZE (1UL << PMD_SHIFT)
-#define PMD_MASK (~(PMD_SIZE - 1))
-#define PTRS_PER_PMD 1
-#define PME_SIZE 256
-
-#define __frv_PT_SIZE 256
-
-#define PTRS_PER_PTE 4096
-
-#define USER_PGDS_IN_LAST_PML4 (TASK_SIZE / PGDIR_SIZE)
-#define FIRST_USER_ADDRESS 0UL
-
-#define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
-#define KERNEL_PGD_PTRS (PTRS_PER_PGD - USER_PGD_PTRS)
-
-#define TWOLEVEL_PGDIR_SHIFT 26
-#define BOOT_USER_PGD_PTRS (__PAGE_OFFSET >> TWOLEVEL_PGDIR_SHIFT)
-#define BOOT_KERNEL_PGD_PTRS (PTRS_PER_PGD - BOOT_USER_PGD_PTRS)
-
-#ifndef __ASSEMBLY__
-
-extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
-
-#define pte_ERROR(e) \
- printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, (e).pte)
-#define pmd_ERROR(e) \
- printk("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
-#define pud_ERROR(e) \
- printk("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pmd_val(pud_val(e)))
-#define pgd_ERROR(e) \
- printk("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pmd_val(pud_val(pgd_val(e))))
-
-/*
- * Certain architectures need to do special things when PTEs
- * within a page table are directly modified. Thus, the following
- * hook is made available.
- */
-#define set_pte(pteptr, pteval) \
-do { \
- *(pteptr) = (pteval); \
- asm volatile("dcf %M0" :: "U"(*pteptr)); \
-} while(0)
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
-
-/*
- * pgd_offset() returns a (pgd_t *)
- * pgd_index() is used get the offset into the pgd page's array of pgd_t's;
- */
-#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
-
-/*
- * a shortcut which implies the use of the kernel's pgd, instead
- * of a process's
- */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-
-/*
- * The "pgd_xxx()" functions here are trivial for a folded two-level
- * setup: the pud is never bad, and a pud always exists (as it's folded
- * into the pgd entry)
- */
-static inline int pgd_none(pgd_t pgd) { return 0; }
-static inline int pgd_bad(pgd_t pgd) { return 0; }
-static inline int pgd_present(pgd_t pgd) { return 1; }
-static inline void pgd_clear(pgd_t *pgd) { }
-
-#define pgd_populate(mm, pgd, pud) do { } while (0)
-/*
- * (puds are folded into pgds so this doesn't get actually called,
- * but the define is needed for a generic inline function.)
- */
-#define set_pgd(pgdptr, pgdval) \
-do { \
- memcpy((pgdptr), &(pgdval), sizeof(pgd_t)); \
- asm volatile("dcf %M0" :: "U"(*(pgdptr))); \
-} while(0)
-
-static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address)
-{
- return (pud_t *) pgd;
-}
-
-#define pgd_page(pgd) (pud_page((pud_t){ pgd }))
-#define pgd_page_vaddr(pgd) (pud_page_vaddr((pud_t){ pgd }))
-
-/*
- * allocating and freeing a pud is trivial: the 1-entry pud is
- * inside the pgd, so has no extra memory associated with it.
- */
-#define pud_alloc_one(mm, address) NULL
-#define pud_free(mm, x) do { } while (0)
-#define __pud_free_tlb(tlb, x, address) do { } while (0)
-
-/*
- * The "pud_xxx()" functions here are trivial for a folded two-level
- * setup: the pmd is never bad, and a pmd always exists (as it's folded
- * into the pud entry)
- */
-static inline int pud_none(pud_t pud) { return 0; }
-static inline int pud_bad(pud_t pud) { return 0; }
-static inline int pud_present(pud_t pud) { return 1; }
-static inline void pud_clear(pud_t *pud) { }
-
-#define pud_populate(mm, pmd, pte) do { } while (0)
-
-/*
- * (pmds are folded into puds so this doesn't get actually called,
- * but the define is needed for a generic inline function.)
- */
-#define set_pud(pudptr, pudval) set_pmd((pmd_t *)(pudptr), (pmd_t) { pudval })
-
-#define pud_page(pud) (pmd_page((pmd_t){ pud }))
-#define pud_page_vaddr(pud) (pmd_page_vaddr((pmd_t){ pud }))
-
-/*
- * (pmds are folded into pgds so this doesn't get actually called,
- * but the define is needed for a generic inline function.)
- */
-extern void __set_pmd(pmd_t *pmdptr, unsigned long __pmd);
-
-#define set_pmd(pmdptr, pmdval) \
-do { \
- __set_pmd((pmdptr), (pmdval).ste[0]); \
-} while(0)
-
-#define __pmd_index(address) 0
-
-static inline pmd_t *pmd_offset(pud_t *dir, unsigned long address)
-{
- return (pmd_t *) dir + __pmd_index(address);
-}
-
-#define pte_same(a, b) ((a).pte == (b).pte)
-#define pte_page(x) (mem_map + ((unsigned long)(((x).pte >> PAGE_SHIFT))))
-#define pte_none(x) (!(x).pte)
-#define pte_pfn(x) ((unsigned long)(((x).pte >> PAGE_SHIFT)))
-#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
-#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
-
-#define VMALLOC_VMADDR(x) ((unsigned long) (x))
-
-#endif /* !__ASSEMBLY__ */
-
-/*
- * control flags in AMPR registers and TLB entries
- */
-#define _PAGE_BIT_PRESENT xAMPRx_V_BIT
-#define _PAGE_BIT_WP DAMPRx_WP_BIT
-#define _PAGE_BIT_NOCACHE xAMPRx_C_BIT
-#define _PAGE_BIT_SUPER xAMPRx_S_BIT
-#define _PAGE_BIT_ACCESSED xAMPRx_RESERVED8_BIT
-#define _PAGE_BIT_DIRTY xAMPRx_M_BIT
-#define _PAGE_BIT_NOTGLOBAL xAMPRx_NG_BIT
-
-#define _PAGE_PRESENT xAMPRx_V
-#define _PAGE_WP DAMPRx_WP
-#define _PAGE_NOCACHE xAMPRx_C
-#define _PAGE_SUPER xAMPRx_S
-#define _PAGE_ACCESSED xAMPRx_RESERVED8 /* accessed if set */
-#define _PAGE_DIRTY xAMPRx_M
-#define _PAGE_NOTGLOBAL xAMPRx_NG
-
-#define _PAGE_RESERVED_MASK (xAMPRx_RESERVED8 | xAMPRx_RESERVED13)
-
-#define _PAGE_PROTNONE 0x000 /* If not present */
-
-#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
-
-#define __PGPROT_BASE \
- (_PAGE_PRESENT | xAMPRx_SS_16Kb | xAMPRx_D | _PAGE_NOTGLOBAL | _PAGE_ACCESSED)
-
-#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED __pgprot(__PGPROT_BASE)
-#define PAGE_COPY __pgprot(__PGPROT_BASE | _PAGE_WP)
-#define PAGE_READONLY __pgprot(__PGPROT_BASE | _PAGE_WP)
-
-#define __PAGE_KERNEL (__PGPROT_BASE | _PAGE_SUPER | _PAGE_DIRTY)
-#define __PAGE_KERNEL_NOCACHE (__PGPROT_BASE | _PAGE_SUPER | _PAGE_DIRTY | _PAGE_NOCACHE)
-#define __PAGE_KERNEL_RO (__PGPROT_BASE | _PAGE_SUPER | _PAGE_DIRTY | _PAGE_WP)
-
-#define MAKE_GLOBAL(x) __pgprot((x) & ~_PAGE_NOTGLOBAL)
-
-#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
-#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
-#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
-
-#define _PAGE_TABLE (_PAGE_PRESENT | xAMPRx_SS_16Kb)
-
-#ifndef __ASSEMBLY__
-
-/*
- * The FR451 can do execute protection by virtue of having separate TLB miss handlers for
- * instruction access and for data access. However, we don't have enough reserved bits to say
- * "execute only", so we don't bother. If you can read it, you can execute it and vice versa.
- */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
-
-/*
- * Define this to warn about kernel memory accesses that are
- * done without a 'access_ok(VERIFY_WRITE,..)'
- */
-#undef TEST_ACCESS_OK
-
-#define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
-#define pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
-
-#define pmd_none(x) (!pmd_val(x))
-#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
-#define pmd_bad(x) (pmd_val(x) & xAMPRx_SS)
-#define pmd_clear(xp) do { __set_pmd(xp, 0); } while(0)
-
-#define pmd_page_vaddr(pmd) \
- ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
-
-#ifndef CONFIG_DISCONTIGMEM
-#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
-#endif
-
-#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-
-/*
- * The following only work if pte_present() is true.
- * Undefined behaviour if not..
- */
-static inline int pte_dirty(pte_t pte) { return (pte).pte & _PAGE_DIRTY; }
-static inline int pte_young(pte_t pte) { return (pte).pte & _PAGE_ACCESSED; }
-static inline int pte_write(pte_t pte) { return !((pte).pte & _PAGE_WP); }
-static inline int pte_special(pte_t pte) { return 0; }
-
-static inline pte_t pte_mkclean(pte_t pte) { (pte).pte &= ~_PAGE_DIRTY; return pte; }
-static inline pte_t pte_mkold(pte_t pte) { (pte).pte &= ~_PAGE_ACCESSED; return pte; }
-static inline pte_t pte_wrprotect(pte_t pte) { (pte).pte |= _PAGE_WP; return pte; }
-static inline pte_t pte_mkdirty(pte_t pte) { (pte).pte |= _PAGE_DIRTY; return pte; }
-static inline pte_t pte_mkyoung(pte_t pte) { (pte).pte |= _PAGE_ACCESSED; return pte; }
-static inline pte_t pte_mkwrite(pte_t pte) { (pte).pte &= ~_PAGE_WP; return pte; }
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
-
-static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
-{
- int i = test_and_clear_bit(_PAGE_BIT_ACCESSED, ptep);
- asm volatile("dcf %M0" :: "U"(*ptep));
- return i;
-}
-
-static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
- unsigned long x = xchg(&ptep->pte, 0);
- asm volatile("dcf %M0" :: "U"(*ptep));
- return __pte(x);
-}
-
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
- set_bit(_PAGE_BIT_WP, ptep);
- asm volatile("dcf %M0" :: "U"(*ptep));
-}
-
-/*
- * Macro to mark a page protection value as "uncacheable"
- */
-#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | _PAGE_NOCACHE))
-
-/*
- * Conversion functions: convert a page and protection to a page entry,
- * and a page entry and page directory to the page they refer to.
- */
-
-#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
-#define mk_pte_huge(entry) ((entry).pte_low |= _PAGE_PRESENT | _PAGE_PSE)
-
-/* This takes a physical page address that is used by the remapping functions */
-#define mk_pte_phys(physpage, pgprot) pfn_pte((physpage) >> PAGE_SHIFT, pgprot)
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
- pte.pte &= _PAGE_CHG_MASK;
- pte.pte |= pgprot_val(newprot);
- return pte;
-}
-
-/* to find an entry in a page-table-directory. */
-#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
-#define pgd_index_k(addr) pgd_index(addr)
-
-/* Find an entry in the bottom-level page table.. */
-#define __pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-
-/*
- * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
- *
- * this macro returns the index of the entry in the pte page which would
- * control the given virtual address
- */
-#define pte_index(address) \
- (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-#define pte_offset_kernel(dir, address) \
- ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
-
-#if defined(CONFIG_HIGHPTE)
-#define pte_offset_map(dir, address) \
- ((pte_t *)kmap_atomic(pmd_page(*(dir))) + pte_index(address))
-#define pte_unmap(pte) kunmap_atomic(pte)
-#else
-#define pte_offset_map(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_unmap(pte) do { } while (0)
-#endif
-
-/*
- * Handle swap and file entries
- * - the PTE is encoded in the following format:
- * bit 0: Must be 0 (!_PAGE_PRESENT)
- * bits 1-6: Swap type
- * bits 7-31: Swap offset
- */
-#define __swp_type(x) (((x).val >> 1) & 0x1f)
-#define __swp_offset(x) ((x).val >> 7)
-#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) | ((offset) << 7) })
-#define __pte_to_swp_entry(_pte) ((swp_entry_t) { (_pte).pte })
-#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
-
-/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
-#define PageSkip(page) (0)
-#define kern_addr_valid(addr) (1)
-
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-#define __HAVE_ARCH_PTE_SAME
-#include <asm-generic/pgtable.h>
-
-/*
- * preload information about a newly instantiated PTE into the SCR0/SCR1 PGE cache
- */
-static inline void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep)
-{
- struct mm_struct *mm;
- unsigned long ampr;
-
- mm = current->mm;
- if (mm) {
- pgd_t *pge = pgd_offset(mm, address);
- pud_t *pue = pud_offset(pge, address);
- pmd_t *pme = pmd_offset(pue, address);
-
- ampr = pme->ste[0] & 0xffffff00;
- ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C |
- xAMPRx_V;
- } else {
- address = ULONG_MAX;
- ampr = 0;
- }
-
- asm volatile("movgs %0,scr0\n"
- "movgs %0,scr1\n"
- "movgs %1,dampr4\n"
- "movgs %1,dampr5\n"
- :
- : "r"(address), "r"(ampr)
- );
-}
-
-#ifdef CONFIG_PROC_FS
-extern char *proc_pid_status_frv_cxnr(struct mm_struct *mm, char *buffer);
-#endif
-
-extern void __init pgtable_cache_init(void);
-
-#endif /* !__ASSEMBLY__ */
-#endif /* !CONFIG_MMU */
-
-#ifndef __ASSEMBLY__
-extern void __init paging_init(void);
-#endif /* !__ASSEMBLY__ */
-#define HAVE_ARCH_UNMAPPED_AREA
-
-#endif /* _ASM_PGTABLE_H */
+++ /dev/null
-/* processor.h: FRV processor definitions
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_PROCESSOR_H
-#define _ASM_PROCESSOR_H
-
-#include <asm/mem-layout.h>
-
-#ifndef __ASSEMBLY__
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ __label__ _l; _l: &&_l;})
-
-#include <linux/compiler.h>
-#include <linux/linkage.h>
-#include <asm/sections.h>
-#include <asm/segment.h>
-#include <asm/fpu.h>
-#include <asm/registers.h>
-#include <asm/ptrace.h>
-#include <asm/current.h>
-#include <asm/cache.h>
-
-/* Forward declaration, a strange C thing */
-struct task_struct;
-
-/*
- * Bus types
- */
-#define EISA_bus 0
-
-struct thread_struct {
- struct pt_regs *frame; /* [GR28] exception frame ptr for this thread */
- struct task_struct *curr; /* [GR29] current pointer for this thread */
- unsigned long sp; /* [GR1 ] kernel stack pointer */
- unsigned long fp; /* [GR2 ] kernel frame pointer */
- unsigned long lr; /* link register */
- unsigned long pc; /* program counter */
- unsigned long gr[12]; /* [GR16-GR27] */
- unsigned long sched_lr; /* LR from schedule() */
-
- union {
- struct pt_regs *frame0; /* top (user) stack frame */
- struct user_context *user; /* userspace context */
- };
-} __attribute__((aligned(8)));
-
-extern struct pt_regs *__kernel_frame0_ptr;
-extern struct task_struct *__kernel_current_task;
-
-#endif
-
-#ifndef __ASSEMBLY__
-#define INIT_THREAD_FRAME0 \
- ((struct pt_regs *) \
- (sizeof(init_stack) + (unsigned long) init_stack - sizeof(struct user_context)))
-
-#define INIT_THREAD { \
- NULL, \
- (struct task_struct *) init_stack, \
- 0, 0, 0, 0, \
- { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
- 0, \
- { INIT_THREAD_FRAME0 }, \
-}
-
-/*
- * do necessary setup to start up a newly executed thread.
- */
-#define start_thread(_regs, _pc, _usp) \
-do { \
- _regs->pc = (_pc); \
- _regs->psr &= ~PSR_S; \
- _regs->sp = (_usp); \
-} while(0)
-
-/* Free all resources held by a thread. */
-static inline void release_thread(struct task_struct *dead_task)
-{
-}
-
-extern asmlinkage void save_user_regs(struct user_context *target);
-extern asmlinkage void *restore_user_regs(const struct user_context *target, ...);
-
-unsigned long get_wchan(struct task_struct *p);
-
-#define KSTK_EIP(tsk) ((tsk)->thread.frame0->pc)
-#define KSTK_ESP(tsk) ((tsk)->thread.frame0->sp)
-
-#define cpu_relax() barrier()
-
-/* data cache prefetch */
-#define ARCH_HAS_PREFETCH
-static inline void prefetch(const void *x)
-{
- asm volatile("dcpl %0,gr0,#0" : : "r"(x));
-}
-
-#endif /* __ASSEMBLY__ */
-#endif /* _ASM_PROCESSOR_H */
+++ /dev/null
-/* ptrace.h: ptrace() relevant definitions
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_PTRACE_H
-#define _ASM_PTRACE_H
-
-#include <asm/irq_regs.h>
-#include <uapi/asm/ptrace.h>
-
-#define in_syscall(regs) (((regs)->tbr & TBR_TT) == TBR_TT_TRAP0)
-#ifndef __ASSEMBLY__
-
-struct task_struct;
-
-/*
- * we dedicate GR28 to keeping a pointer to the current exception frame
- * - gr28 is destroyed on entry to the kernel from userspace
- */
-register struct pt_regs *__frame asm("gr28");
-
-#define user_mode(regs) (!((regs)->psr & PSR_S))
-#define instruction_pointer(regs) ((regs)->pc)
-#define user_stack_pointer(regs) ((regs)->sp)
-#define current_pt_regs() (__frame)
-
-extern unsigned long user_stack(const struct pt_regs *);
-#define profile_pc(regs) ((regs)->pc)
-
-#define task_pt_regs(task) ((task)->thread.frame0)
-
-#define arch_has_single_step() (1)
-
-#endif /* !__ASSEMBLY__ */
-#endif /* _ASM_PTRACE_H */
+++ /dev/null
-/* sections.h: linkage layout variables
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_SECTIONS_H
-#define _ASM_SECTIONS_H
-
-#ifndef __ASSEMBLY__
-
-#include <linux/types.h>
-#include <asm-generic/sections.h>
-
-#ifdef __KERNEL__
-
-/*
- * we don't want to put variables in the GP-REL section if they're not used very much - that would
- * be waste since GP-REL addressing is limited to GP16+/-2048
- */
-#define __nongpreldata __attribute__((section(".data")))
-#define __nongprelbss __attribute__((section(".bss")))
-
-/*
- * linker symbols
- */
-extern const void __kernel_image_start, __kernel_image_end, __page_offset;
-
-extern unsigned long __nongprelbss memory_start;
-extern unsigned long __nongprelbss memory_end;
-extern unsigned long __nongprelbss rom_length;
-
-#endif
-#endif
-#endif /* _ASM_SECTIONS_H */
+++ /dev/null
-/* segment.h: MMU segment settings
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_SEGMENT_H
-#define _ASM_SEGMENT_H
-
-
-#ifndef __ASSEMBLY__
-
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
-#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
-
-#ifdef CONFIG_MMU
-#define USER_DS MAKE_MM_SEG(TASK_SIZE - 1)
-#define KERNEL_DS MAKE_MM_SEG(0xdfffffffUL)
-#else
-#define USER_DS MAKE_MM_SEG(memory_end)
-#define KERNEL_DS MAKE_MM_SEG(0xe0000000UL)
-#endif
-
-#define get_ds() (KERNEL_DS)
-#define get_fs() (__current_thread_info->addr_limit)
-#define segment_eq(a, b) ((a).seg == (b).seg)
-#define get_addr_limit() (get_fs().seg)
-
-#define set_fs(_x) \
-do { \
- __current_thread_info->addr_limit = (_x); \
-} while(0)
-
-
-#endif /* __ASSEMBLY__ */
-#endif /* _ASM_SEGMENT_H */
+++ /dev/null
-/* serial-regs.h: serial port registers
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_SERIAL_REGS_H
-#define _ASM_SERIAL_REGS_H
-
-#include <linux/serial_reg.h>
-#include <asm/irc-regs.h>
-
-#define SERIAL_ICLK 33333333 /* the target serial input clock */
-#define UART0_BASE 0xfeff9c00
-#define UART1_BASE 0xfeff9c40
-
-#define __get_UART0(R) ({ __reg(UART0_BASE + (R) * 8) >> 24; })
-#define __get_UART1(R) ({ __reg(UART1_BASE + (R) * 8) >> 24; })
-#define __set_UART0(R,V) do { __reg(UART0_BASE + (R) * 8) = (V) << 24; } while(0)
-#define __set_UART1(R,V) do { __reg(UART1_BASE + (R) * 8) = (V) << 24; } while(0)
-
-#define __get_UART0_LSR() ({ __get_UART0(UART_LSR); })
-#define __get_UART1_LSR() ({ __get_UART1(UART_LSR); })
-
-#define __set_UART0_IER(V) __set_UART0(UART_IER,(V))
-#define __set_UART1_IER(V) __set_UART1(UART_IER,(V))
-
-/* serial prescaler select register */
-#define __get_UCPSR() ({ *(volatile unsigned long *)(0xfeff9c90); })
-#define __set_UCPSR(V) do { *(volatile unsigned long *)(0xfeff9c90) = (V); } while(0)
-#define UCPSR_SELECT0 0x07000000
-#define UCPSR_SELECT1 0x38000000
-
-/* serial prescaler base value register */
-#define __get_UCPVR() ({ *(volatile unsigned long *)(0xfeff9c98); mb(); })
-#define __set_UCPVR(V) do { *(volatile unsigned long *)(0xfeff9c98) = (V) << 24; mb(); } while(0)
-
-
-#endif /* _ASM_SERIAL_REGS_H */
+++ /dev/null
-/*
- * serial.h
- *
- * Copyright (C) 2003 Develer S.r.l. (http://www.develer.com/)
- * Author: Bernardo Innocenti <bernie@codewiz.org>
- *
- * Based on linux/include/asm-i386/serial.h
- */
-#include <asm/serial-regs.h>
-
-/*
- * the base baud is derived from the clock speed and so is variable
- */
-#define BASE_BAUD 0
+++ /dev/null
-/* setup.h: setup stuff
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_SETUP_H
-#define _ASM_SETUP_H
-
-
-#include <linux/init.h>
-#include <uapi/asm/setup.h>
-
-#ifndef __ASSEMBLY__
-
-#ifdef CONFIG_MMU
-extern unsigned long __initdata num_mappedpages;
-#endif
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_SETUP_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SHMPARAM_H
-#define _ASM_SHMPARAM_H
-
-#define SHMLBA PAGE_SIZE /* attach addr a multiple of this */
-
-#endif /* _ASM_SHMPARAM_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SIGNAL_H
-#define _ASM_SIGNAL_H
-
-#include <uapi/asm/signal.h>
-
-#endif /* _ASM_SIGNAL_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_SMP_H
-#define __ASM_SMP_H
-
-
-#ifdef CONFIG_SMP
-#error SMP not supported
-#endif
-
-#endif
+++ /dev/null
-/* spinlock.h: spinlocks for FR-V
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_SPINLOCK_H
-#define _ASM_SPINLOCK_H
-
-#error no spinlocks for FR-V yet
-
-#endif /* _ASM_SPINLOCK_H */
+++ /dev/null
-/* spr-regs.h: special-purpose registers on the FRV
- *
- * Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_SPR_REGS_H
-#define _ASM_SPR_REGS_H
-
-/*
- * PSR - Processor Status Register
- */
-#define PSR_ET 0x00000001 /* enable interrupts/exceptions flag */
-#define PSR_PS 0x00000002 /* previous supervisor mode flag */
-#define PSR_S 0x00000004 /* supervisor mode flag */
-#define PSR_PIL 0x00000078 /* processor external interrupt level */
-#define PSR_PIL_0 0x00000000 /* - no interrupt in progress */
-#define PSR_PIL_13 0x00000068 /* - debugging only */
-#define PSR_PIL_14 0x00000070 /* - debugging in progress */
-#define PSR_PIL_15 0x00000078 /* - NMI in progress */
-#define PSR_EM 0x00000080 /* enable media operation */
-#define PSR_EF 0x00000100 /* enable FPU operation */
-#define PSR_BE 0x00001000 /* endianness mode */
-#define PSR_BE_LE 0x00000000 /* - little endian mode */
-#define PSR_BE_BE 0x00001000 /* - big endian mode */
-#define PSR_CM 0x00002000 /* conditional mode */
-#define PSR_NEM 0x00004000 /* non-excepting mode */
-#define PSR_ICE 0x00010000 /* in-circuit emulation mode */
-#define PSR_VERSION_SHIFT 24 /* CPU silicon ID */
-#define PSR_IMPLE_SHIFT 28 /* CPU core ID */
-
-#define PSR_VERSION(psr) (((psr) >> PSR_VERSION_SHIFT) & 0xf)
-#define PSR_IMPLE(psr) (((psr) >> PSR_IMPLE_SHIFT) & 0xf)
-
-#define PSR_IMPLE_FR401 0x2
-#define PSR_VERSION_FR401_MB93401 0x0
-#define PSR_VERSION_FR401_MB93401A 0x1
-#define PSR_VERSION_FR401_MB93403 0x2
-
-#define PSR_IMPLE_FR405 0x4
-#define PSR_VERSION_FR405_MB93405 0x0
-
-#define PSR_IMPLE_FR451 0x5
-#define PSR_VERSION_FR451_MB93451 0x0
-
-#define PSR_IMPLE_FR501 0x1
-#define PSR_VERSION_FR501_MB93501 0x1
-#define PSR_VERSION_FR501_MB93501A 0x2
-
-#define PSR_IMPLE_FR551 0x3
-#define PSR_VERSION_FR551_MB93555 0x1
-
-#define __get_PSR() ({ unsigned long x; asm volatile("movsg psr,%0" : "=r"(x)); x; })
-#define __set_PSR(V) do { asm volatile("movgs %0,psr" : : "r"(V)); } while(0)
-
-/*
- * TBR - Trap Base Register
- */
-#define TBR_TT 0x00000ff0
-#define TBR_TT_INSTR_MMU_MISS (0x01 << 4)
-#define TBR_TT_INSTR_ACC_ERROR (0x02 << 4)
-#define TBR_TT_INSTR_ACC_EXCEP (0x03 << 4)
-#define TBR_TT_PRIV_INSTR (0x06 << 4)
-#define TBR_TT_ILLEGAL_INSTR (0x07 << 4)
-#define TBR_TT_FP_EXCEPTION (0x0d << 4)
-#define TBR_TT_MP_EXCEPTION (0x0e << 4)
-#define TBR_TT_DATA_ACC_ERROR (0x11 << 4)
-#define TBR_TT_DATA_MMU_MISS (0x12 << 4)
-#define TBR_TT_DATA_ACC_EXCEP (0x13 << 4)
-#define TBR_TT_DATA_STR_ERROR (0x14 << 4)
-#define TBR_TT_DIVISION_EXCEP (0x17 << 4)
-#define TBR_TT_COMMIT_EXCEP (0x19 << 4)
-#define TBR_TT_INSTR_TLB_MISS (0x1a << 4)
-#define TBR_TT_DATA_TLB_MISS (0x1b << 4)
-#define TBR_TT_DATA_DAT_EXCEP (0x1d << 4)
-#define TBR_TT_DECREMENT_TIMER (0x1f << 4)
-#define TBR_TT_COMPOUND_EXCEP (0x20 << 4)
-#define TBR_TT_INTERRUPT_1 (0x21 << 4)
-#define TBR_TT_INTERRUPT_2 (0x22 << 4)
-#define TBR_TT_INTERRUPT_3 (0x23 << 4)
-#define TBR_TT_INTERRUPT_4 (0x24 << 4)
-#define TBR_TT_INTERRUPT_5 (0x25 << 4)
-#define TBR_TT_INTERRUPT_6 (0x26 << 4)
-#define TBR_TT_INTERRUPT_7 (0x27 << 4)
-#define TBR_TT_INTERRUPT_8 (0x28 << 4)
-#define TBR_TT_INTERRUPT_9 (0x29 << 4)
-#define TBR_TT_INTERRUPT_10 (0x2a << 4)
-#define TBR_TT_INTERRUPT_11 (0x2b << 4)
-#define TBR_TT_INTERRUPT_12 (0x2c << 4)
-#define TBR_TT_INTERRUPT_13 (0x2d << 4)
-#define TBR_TT_INTERRUPT_14 (0x2e << 4)
-#define TBR_TT_INTERRUPT_15 (0x2f << 4)
-#define TBR_TT_TRAP0 (0x80 << 4)
-#define TBR_TT_TRAP1 (0x81 << 4)
-#define TBR_TT_TRAP2 (0x82 << 4)
-#define TBR_TT_TRAP3 (0x83 << 4)
-#define TBR_TT_TRAP120 (0xf8 << 4)
-#define TBR_TT_TRAP121 (0xf9 << 4)
-#define TBR_TT_TRAP122 (0xfa << 4)
-#define TBR_TT_TRAP123 (0xfb << 4)
-#define TBR_TT_TRAP124 (0xfc << 4)
-#define TBR_TT_TRAP125 (0xfd << 4)
-#define TBR_TT_TRAP126 (0xfe << 4)
-#define TBR_TT_BREAK (0xff << 4)
-
-#define TBR_TT_ATOMIC_CMPXCHG32 TBR_TT_TRAP120
-#define TBR_TT_ATOMIC_XCHG32 TBR_TT_TRAP121
-#define TBR_TT_ATOMIC_XOR TBR_TT_TRAP122
-#define TBR_TT_ATOMIC_OR TBR_TT_TRAP123
-#define TBR_TT_ATOMIC_AND TBR_TT_TRAP124
-#define TBR_TT_ATOMIC_SUB TBR_TT_TRAP125
-#define TBR_TT_ATOMIC_ADD TBR_TT_TRAP126
-
-#define __get_TBR() ({ unsigned long x; asm volatile("movsg tbr,%0" : "=r"(x)); x; })
-
-/*
- * HSR0 - Hardware Status Register 0
- */
-#define HSR0_PDM 0x00000007 /* power down mode */
-#define HSR0_PDM_NORMAL 0x00000000 /* - normal mode */
-#define HSR0_PDM_CORE_SLEEP 0x00000001 /* - CPU core sleep mode */
-#define HSR0_PDM_BUS_SLEEP 0x00000003 /* - bus sleep mode */
-#define HSR0_PDM_PLL_RUN 0x00000005 /* - PLL run */
-#define HSR0_PDM_PLL_STOP 0x00000007 /* - PLL stop */
-#define HSR0_GRLE 0x00000040 /* GR lower register set enable */
-#define HSR0_GRHE 0x00000080 /* GR higher register set enable */
-#define HSR0_FRLE 0x00000100 /* FR lower register set enable */
-#define HSR0_FRHE 0x00000200 /* FR higher register set enable */
-#define HSR0_GRN 0x00000400 /* GR quantity */
-#define HSR0_GRN_64 0x00000000 /* - 64 GR registers */
-#define HSR0_GRN_32 0x00000400 /* - 32 GR registers */
-#define HSR0_FRN 0x00000800 /* FR quantity */
-#define HSR0_FRN_64 0x00000000 /* - 64 FR registers */
-#define HSR0_FRN_32 0x00000800 /* - 32 FR registers */
-#define HSR0_SA 0x00001000 /* start address (RAMBOOT#) */
-#define HSR0_ETMI 0x00008000 /* enable TIMERI (64-bit up timer) */
-#define HSR0_ETMD 0x00004000 /* enable TIMERD (32-bit down timer) */
-#define HSR0_PEDAT 0x00010000 /* previous DAT mode */
-#define HSR0_XEDAT 0x00020000 /* exception DAT mode */
-#define HSR0_EDAT 0x00080000 /* enable DAT mode */
-#define HSR0_RME 0x00400000 /* enable RAM mode */
-#define HSR0_EMEM 0x00800000 /* enable MMU_Miss mask */
-#define HSR0_EXMMU 0x01000000 /* enable extended MMU mode */
-#define HSR0_EDMMU 0x02000000 /* enable data MMU */
-#define HSR0_EIMMU 0x04000000 /* enable instruction MMU */
-#define HSR0_CBM 0x08000000 /* copy back mode */
-#define HSR0_CBM_WRITE_THRU 0x00000000 /* - write through */
-#define HSR0_CBM_COPY_BACK 0x08000000 /* - copy back */
-#define HSR0_NWA 0x10000000 /* no write allocate */
-#define HSR0_DCE 0x40000000 /* data cache enable */
-#define HSR0_ICE 0x80000000 /* instruction cache enable */
-
-#define __get_HSR(R) ({ unsigned long x; asm volatile("movsg hsr"#R",%0" : "=r"(x)); x; })
-#define __set_HSR(R,V) do { asm volatile("movgs %0,hsr"#R : : "r"(V)); } while(0)
-
-/*
- * CCR - Condition Codes Register
- */
-#define CCR_FCC0 0x0000000f /* FP/Media condition 0 (fcc0 reg) */
-#define CCR_FCC1 0x000000f0 /* FP/Media condition 1 (fcc1 reg) */
-#define CCR_FCC2 0x00000f00 /* FP/Media condition 2 (fcc2 reg) */
-#define CCR_FCC3 0x0000f000 /* FP/Media condition 3 (fcc3 reg) */
-#define CCR_ICC0 0x000f0000 /* Integer condition 0 (icc0 reg) */
-#define CCR_ICC0_C 0x00010000 /* - Carry flag */
-#define CCR_ICC0_V 0x00020000 /* - Overflow flag */
-#define CCR_ICC0_Z 0x00040000 /* - Zero flag */
-#define CCR_ICC0_N 0x00080000 /* - Negative flag */
-#define CCR_ICC1 0x00f00000 /* Integer condition 1 (icc1 reg) */
-#define CCR_ICC2 0x0f000000 /* Integer condition 2 (icc2 reg) */
-#define CCR_ICC3 0xf0000000 /* Integer condition 3 (icc3 reg) */
-
-/*
- * CCCR - Condition Codes for Conditional Instructions Register
- */
-#define CCCR_CC0 0x00000003 /* condition 0 (cc0 reg) */
-#define CCCR_CC0_FALSE 0x00000002 /* - condition is false */
-#define CCCR_CC0_TRUE 0x00000003 /* - condition is true */
-#define CCCR_CC1 0x0000000c /* condition 1 (cc1 reg) */
-#define CCCR_CC2 0x00000030 /* condition 2 (cc2 reg) */
-#define CCCR_CC3 0x000000c0 /* condition 3 (cc3 reg) */
-#define CCCR_CC4 0x00000300 /* condition 4 (cc4 reg) */
-#define CCCR_CC5 0x00000c00 /* condition 5 (cc5 reg) */
-#define CCCR_CC6 0x00003000 /* condition 6 (cc6 reg) */
-#define CCCR_CC7 0x0000c000 /* condition 7 (cc7 reg) */
-
-/*
- * ISR - Integer Status Register
- */
-#define ISR_EMAM 0x00000001 /* memory misaligned access handling */
-#define ISR_EMAM_EXCEPTION 0x00000000 /* - generate exception */
-#define ISR_EMAM_FUDGE 0x00000001 /* - mask out invalid address bits */
-#define ISR_AEXC 0x00000004 /* accrued [overflow] exception */
-#define ISR_DTT 0x00000018 /* division type trap */
-#define ISR_DTT_IGNORE 0x00000000 /* - ignore division error */
-#define ISR_DTT_DIVBYZERO 0x00000008 /* - generate exception */
-#define ISR_DTT_OVERFLOW 0x00000010 /* - record overflow */
-#define ISR_EDE 0x00000020 /* enable division exception */
-#define ISR_PLI 0x20000000 /* pre-load instruction information */
-#define ISR_QI 0x80000000 /* quad data implementation information */
-
-/*
- * EPCR0 - Exception PC Register
- */
-#define EPCR0_V 0x00000001 /* register content validity indicator */
-#define EPCR0_PC 0xfffffffc /* faulting instruction address */
-
-/*
- * ESR0/14/15 - Exception Status Register
- */
-#define ESRx_VALID 0x00000001 /* register content validity indicator */
-#define ESRx_EC 0x0000003e /* exception type */
-#define ESRx_EC_DATA_STORE 0x00000000 /* - data_store_error */
-#define ESRx_EC_INSN_ACCESS 0x00000006 /* - instruction_access_error */
-#define ESRx_EC_PRIV_INSN 0x00000008 /* - privileged_instruction */
-#define ESRx_EC_ILL_INSN 0x0000000a /* - illegal_instruction */
-#define ESRx_EC_MP_EXCEP 0x0000001c /* - mp_exception */
-#define ESRx_EC_DATA_ACCESS 0x00000020 /* - data_access_error */
-#define ESRx_EC_DIVISION 0x00000026 /* - division_exception */
-#define ESRx_EC_ITLB_MISS 0x00000034 /* - instruction_access_TLB_miss */
-#define ESRx_EC_DTLB_MISS 0x00000036 /* - data_access_TLB_miss */
-#define ESRx_EC_DATA_ACCESS_DAT 0x0000003a /* - data_access_DAT_exception */
-
-#define ESR0_IAEC 0x00000100 /* info for instruction-access-exception */
-#define ESR0_IAEC_RESV 0x00000000 /* - reserved */
-#define ESR0_IAEC_PROT_VIOL 0x00000100 /* - protection violation */
-
-#define ESR0_ATXC 0x00f00000 /* address translation exception code */
-#define ESR0_ATXC_MMU_MISS 0x00000000 /* - MMU miss exception and more (?) */
-#define ESR0_ATXC_MULTI_DAT 0x00800000 /* - multiple DAT entry hit */
-#define ESR0_ATXC_MULTI_SAT 0x00900000 /* - multiple SAT entry hit */
-#define ESR0_ATXC_AMRTLB_MISS 0x00a00000 /* - MMU/TLB miss exception */
-#define ESR0_ATXC_PRIV_EXCEP 0x00c00000 /* - privilege protection fault */
-#define ESR0_ATXC_WP_EXCEP 0x00d00000 /* - write protection fault */
-
-#define ESR0_EAV 0x00000800 /* true if EAR0 register valid */
-#define ESR15_EAV 0x00000800 /* true if EAR15 register valid */
-
-/*
- * ESFR1 - Exception Status Valid Flag Register
- */
-#define ESFR1_ESR0 0x00000001 /* true if ESR0 is valid */
-#define ESFR1_ESR14 0x00004000 /* true if ESR14 is valid */
-#define ESFR1_ESR15 0x00008000 /* true if ESR15 is valid */
-
-/*
- * MSR - Media Status Register
- */
-#define MSR0_AOVF 0x00000001 /* overflow exception accrued */
-#define MSRx_OVF 0x00000002 /* overflow exception detected */
-#define MSRx_SIE 0x0000003c /* last SIMD instruction exception detected */
-#define MSRx_SIE_NONE 0x00000000 /* - none detected */
-#define MSRx_SIE_FRkHI_ACCk 0x00000020 /* - exception at FRkHI or ACCk */
-#define MSRx_SIE_FRkLO_ACCk1 0x00000010 /* - exception at FRkLO or ACCk+1 */
-#define MSRx_SIE_FRk1HI_ACCk2 0x00000008 /* - exception at FRk+1HI or ACCk+2 */
-#define MSRx_SIE_FRk1LO_ACCk3 0x00000004 /* - exception at FRk+1LO or ACCk+3 */
-#define MSR0_MTT 0x00007000 /* type of last media trap detected */
-#define MSR0_MTT_NONE 0x00000000 /* - none detected */
-#define MSR0_MTT_OVERFLOW 0x00001000 /* - overflow detected */
-#define MSR0_HI 0x00c00000 /* hardware implementation */
-#define MSR0_HI_ROUNDING 0x00000000 /* - rounding mode */
-#define MSR0_HI_NONROUNDING 0x00c00000 /* - non-rounding mode */
-#define MSR0_EMCI 0x01000000 /* enable media custom instructions */
-#define MSR0_SRDAV 0x10000000 /* select rounding mode of MAVEH */
-#define MSR0_SRDAV_RDAV 0x00000000 /* - controlled by MSR.RDAV */
-#define MSR0_SRDAV_RD 0x10000000 /* - controlled by MSR.RD */
-#define MSR0_RDAV 0x20000000 /* rounding mode of MAVEH */
-#define MSR0_RDAV_NEAREST_MI 0x00000000 /* - round to nearest minus */
-#define MSR0_RDAV_NEAREST_PL 0x20000000 /* - round to nearest plus */
-#define MSR0_RD 0xc0000000 /* rounding mode */
-#define MSR0_RD_NEAREST 0x00000000 /* - nearest */
-#define MSR0_RD_ZERO 0x40000000 /* - zero */
-#define MSR0_RD_POS_INF 0x80000000 /* - positive infinity */
-#define MSR0_RD_NEG_INF 0xc0000000 /* - negative infinity */
-
-/*
- * IAMPR0-7 - Instruction Address Mapping Register
- * DAMPR0-7 - Data Address Mapping Register
- */
-#define xAMPRx_V 0x00000001 /* register content validity indicator */
-#define DAMPRx_WP 0x00000002 /* write protect */
-#define DAMPRx_WP_RW 0x00000000 /* - read/write */
-#define DAMPRx_WP_RO 0x00000002 /* - read-only */
-#define xAMPRx_C 0x00000004 /* cached/uncached */
-#define xAMPRx_C_CACHED 0x00000000 /* - cached */
-#define xAMPRx_C_UNCACHED 0x00000004 /* - uncached */
-#define xAMPRx_S 0x00000008 /* supervisor only */
-#define xAMPRx_S_USER 0x00000000 /* - userspace can access */
-#define xAMPRx_S_KERNEL 0x00000008 /* - kernel only */
-#define xAMPRx_SS 0x000000f0 /* segment size */
-#define xAMPRx_SS_16Kb 0x00000000 /* - 16 kilobytes */
-#define xAMPRx_SS_64Kb 0x00000010 /* - 64 kilobytes */
-#define xAMPRx_SS_256Kb 0x00000020 /* - 256 kilobytes */
-#define xAMPRx_SS_1Mb 0x00000030 /* - 1 megabyte */
-#define xAMPRx_SS_2Mb 0x00000040 /* - 2 megabytes */
-#define xAMPRx_SS_4Mb 0x00000050 /* - 4 megabytes */
-#define xAMPRx_SS_8Mb 0x00000060 /* - 8 megabytes */
-#define xAMPRx_SS_16Mb 0x00000070 /* - 16 megabytes */
-#define xAMPRx_SS_32Mb 0x00000080 /* - 32 megabytes */
-#define xAMPRx_SS_64Mb 0x00000090 /* - 64 megabytes */
-#define xAMPRx_SS_128Mb 0x000000a0 /* - 128 megabytes */
-#define xAMPRx_SS_256Mb 0x000000b0 /* - 256 megabytes */
-#define xAMPRx_SS_512Mb 0x000000c0 /* - 512 megabytes */
-#define xAMPRx_RESERVED8 0x00000100 /* reserved bit */
-#define xAMPRx_NG 0x00000200 /* non-global */
-#define xAMPRx_L 0x00000400 /* locked */
-#define xAMPRx_M 0x00000800 /* modified */
-#define xAMPRx_D 0x00001000 /* DAT entry */
-#define xAMPRx_RESERVED13 0x00002000 /* reserved bit */
-#define xAMPRx_PPFN 0xfff00000 /* physical page frame number */
-
-#define xAMPRx_V_BIT 0
-#define DAMPRx_WP_BIT 1
-#define xAMPRx_C_BIT 2
-#define xAMPRx_S_BIT 3
-#define xAMPRx_RESERVED8_BIT 8
-#define xAMPRx_NG_BIT 9
-#define xAMPRx_L_BIT 10
-#define xAMPRx_M_BIT 11
-#define xAMPRx_D_BIT 12
-#define xAMPRx_RESERVED13_BIT 13
-
-#define __get_IAMPR(R) ({ unsigned long x; asm volatile("movsg iampr"#R",%0" : "=r"(x)); x; })
-#define __get_DAMPR(R) ({ unsigned long x; asm volatile("movsg dampr"#R",%0" : "=r"(x)); x; })
-
-#define __get_IAMLR(R) ({ unsigned long x; asm volatile("movsg iamlr"#R",%0" : "=r"(x)); x; })
-#define __get_DAMLR(R) ({ unsigned long x; asm volatile("movsg damlr"#R",%0" : "=r"(x)); x; })
-
-#define __set_IAMPR(R,V) do { asm volatile("movgs %0,iampr"#R : : "r"(V)); } while(0)
-#define __set_DAMPR(R,V) do { asm volatile("movgs %0,dampr"#R : : "r"(V)); } while(0)
-
-#define __set_IAMLR(R,V) do { asm volatile("movgs %0,iamlr"#R : : "r"(V)); } while(0)
-#define __set_DAMLR(R,V) do { asm volatile("movgs %0,damlr"#R : : "r"(V)); } while(0)
-
-#define save_dampr(R, _dampr) \
-do { \
- asm volatile("movsg dampr"R",%0" : "=r"(_dampr)); \
-} while(0)
-
-#define restore_dampr(R, _dampr) \
-do { \
- asm volatile("movgs %0,dampr"R :: "r"(_dampr)); \
-} while(0)
-
-/*
- * AMCR - Address Mapping Control Register
- */
-#define AMCR_IAMRN 0x000000ff /* quantity of IAMPR registers */
-#define AMCR_DAMRN 0x0000ff00 /* quantity of DAMPR registers */
-
-/*
- * TTBR - Address Translation Table Base Register
- */
-#define __get_TTBR() ({ unsigned long x; asm volatile("movsg ttbr,%0" : "=r"(x)); x; })
-
-/*
- * TPXR - TLB Probe Extend Register
- */
-#define TPXR_E 0x00000001
-#define TPXR_LMAX_SHIFT 20
-#define TPXR_LMAX_SMASK 0xf
-#define TPXR_WMAX_SHIFT 24
-#define TPXR_WMAX_SMASK 0xf
-#define TPXR_WAY_SHIFT 28
-#define TPXR_WAY_SMASK 0xf
-
-/*
- * DCR - Debug Control Register
- */
-#define DCR_IBCE3 0x00000001 /* break on conditional insn pointed to by IBAR3 */
-#define DCR_IBE3 0x00000002 /* break on insn pointed to by IBAR3 */
-#define DCR_IBCE1 0x00000004 /* break on conditional insn pointed to by IBAR2 */
-#define DCR_IBE1 0x00000008 /* break on insn pointed to by IBAR2 */
-#define DCR_IBCE2 0x00000010 /* break on conditional insn pointed to by IBAR1 */
-#define DCR_IBE2 0x00000020 /* break on insn pointed to by IBAR1 */
-#define DCR_IBCE0 0x00000040 /* break on conditional insn pointed to by IBAR0 */
-#define DCR_IBE0 0x00000080 /* break on insn pointed to by IBAR0 */
-
-#define DCR_DDBE1 0x00004000 /* use DBDR1x when checking DBAR1 */
-#define DCR_DWBE1 0x00008000 /* break on store to address in DBAR1/DBMR1x */
-#define DCR_DRBE1 0x00010000 /* break on load from address in DBAR1/DBMR1x */
-#define DCR_DDBE0 0x00020000 /* use DBDR0x when checking DBAR0 */
-#define DCR_DWBE0 0x00040000 /* break on store to address in DBAR0/DBMR0x */
-#define DCR_DRBE0 0x00080000 /* break on load from address in DBAR0/DBMR0x */
-
-#define DCR_EIM 0x0c000000 /* external interrupt disable */
-#define DCR_IBM 0x10000000 /* instruction break disable */
-#define DCR_SE 0x20000000 /* single step enable */
-#define DCR_EBE 0x40000000 /* exception break enable */
-
-/*
- * BRR - Break Interrupt Request Register
- */
-#define BRR_ST 0x00000001 /* single-step detected */
-#define BRR_SB 0x00000002 /* break instruction detected */
-#define BRR_BB 0x00000004 /* branch with hint detected */
-#define BRR_CBB 0x00000008 /* branch to LR detected */
-#define BRR_IBx 0x000000f0 /* hardware breakpoint detected */
-#define BRR_DBx 0x00000f00 /* hardware watchpoint detected */
-#define BRR_DBNEx 0x0000f000 /* ? */
-#define BRR_EBTT 0x00ff0000 /* trap type of exception break */
-#define BRR_TB 0x10000000 /* external break request detected */
-#define BRR_CB 0x20000000 /* ICE break command detected */
-#define BRR_EB 0x40000000 /* exception break detected */
-
-/*
- * BPSR - Break PSR Save Register
- */
-#define BPSR_BET 0x00000001 /* former PSR.ET */
-#define BPSR_BS 0x00001000 /* former PSR.S */
-
-#endif /* _ASM_SPR_REGS_H */
+++ /dev/null
-/* string.h: FRV string handling
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_STRING_H_
-#define _ASM_STRING_H_
-
-#ifdef __KERNEL__ /* only set these up for kernel code */
-
-#define __HAVE_ARCH_MEMSET 1
-#define __HAVE_ARCH_MEMCPY 1
-
-extern void *memset(void *, int, __kernel_size_t);
-extern void *memcpy(void *, const void *, __kernel_size_t);
-
-#else /* KERNEL */
-
-/*
- * let user libraries deal with these,
- * IMHO the kernel has no place defining these functions for user apps
- */
-
-#define __HAVE_ARCH_STRCPY 1
-#define __HAVE_ARCH_STRNCPY 1
-#define __HAVE_ARCH_STRCAT 1
-#define __HAVE_ARCH_STRNCAT 1
-#define __HAVE_ARCH_STRCMP 1
-#define __HAVE_ARCH_STRNCMP 1
-#define __HAVE_ARCH_STRCHR 1
-#define __HAVE_ARCH_STRRCHR 1
-#define __HAVE_ARCH_STRSTR 1
-#define __HAVE_ARCH_STRLEN 1
-#define __HAVE_ARCH_STRNLEN 1
-#define __HAVE_ARCH_MEMSET 1
-#define __HAVE_ARCH_MEMCPY 1
-#define __HAVE_ARCH_MEMMOVE 1
-#define __HAVE_ARCH_MEMSCAN 1
-#define __HAVE_ARCH_MEMCMP 1
-#define __HAVE_ARCH_MEMCHR 1
-#define __HAVE_ARCH_STRTOK 1
-
-#endif /* KERNEL */
-#endif /* _ASM_STRING_H_ */
+++ /dev/null
-/* FR-V CPU basic task switching
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_SWITCH_TO_H
-#define _ASM_SWITCH_TO_H
-
-#include <linux/thread_info.h>
-
-/*
- * switch_to(prev, next) should switch from task `prev' to `next'
- * `prev' will never be the same as `next'.
- * The `mb' is to tell GCC not to cache `current' across this call.
- */
-extern asmlinkage
-struct task_struct *__switch_to(struct thread_struct *prev_thread,
- struct thread_struct *next_thread,
- struct task_struct *prev);
-
-#define switch_to(prev, next, last) \
-do { \
- (prev)->thread.sched_lr = \
- (unsigned long) __builtin_return_address(0); \
- (last) = __switch_to(&(prev)->thread, &(next)->thread, (prev)); \
- mb(); \
-} while(0)
-
-#endif /* _ASM_SWITCH_TO_H */
+++ /dev/null
-/* syscall parameter access functions
- *
- * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#ifndef _ASM_SYSCALL_H
-#define _ASM_SYSCALL_H
-
-#include <linux/err.h>
-#include <asm/ptrace.h>
-
-/*
- * Get the system call number or -1
- */
-static inline long syscall_get_nr(struct task_struct *task,
- struct pt_regs *regs)
-{
- return regs->syscallno;
-}
-
-/*
- * Restore the clobbered GR8 register
- * (1st syscall arg was overwritten with syscall return or error)
- */
-static inline void syscall_rollback(struct task_struct *task,
- struct pt_regs *regs)
-{
- regs->gr8 = regs->orig_gr8;
-}
-
-/*
- * See if the syscall return value is an error, returning it if it is and 0 if
- * not
- */
-static inline long syscall_get_error(struct task_struct *task,
- struct pt_regs *regs)
-{
- return IS_ERR_VALUE(regs->gr8) ? regs->gr8 : 0;
-}
-
-/*
- * Get the syscall return value
- */
-static inline long syscall_get_return_value(struct task_struct *task,
- struct pt_regs *regs)
-{
- return regs->gr8;
-}
-
-/*
- * Set the syscall return value
- */
-static inline void syscall_set_return_value(struct task_struct *task,
- struct pt_regs *regs,
- int error, long val)
-{
- if (error)
- regs->gr8 = -error;
- else
- regs->gr8 = val;
-}
-
-/*
- * Retrieve the system call arguments
- */
-static inline void syscall_get_arguments(struct task_struct *task,
- struct pt_regs *regs,
- unsigned int i, unsigned int n,
- unsigned long *args)
-{
- /*
- * Do this simply for now. If we need to start supporting
- * fetching arguments from arbitrary indices, this will need some
- * extra logic. Presently there are no in-tree users that depend
- * on this behaviour.
- */
- BUG_ON(i);
-
- /* Argument pattern is: GR8, GR9, GR10, GR11, GR12, GR13 */
- switch (n) {
- case 6: args[5] = regs->gr13;
- case 5: args[4] = regs->gr12;
- case 4: args[3] = regs->gr11;
- case 3: args[2] = regs->gr10;
- case 2: args[1] = regs->gr9;
- case 1: args[0] = regs->gr8;
- break;
- default:
- BUG();
- }
-}
-
-/*
- * Alter the system call arguments
- */
-static inline void syscall_set_arguments(struct task_struct *task,
- struct pt_regs *regs,
- unsigned int i, unsigned int n,
- const unsigned long *args)
-{
- /* Same note as above applies */
- BUG_ON(i);
-
- switch (n) {
- case 6: regs->gr13 = args[5];
- case 5: regs->gr12 = args[4];
- case 4: regs->gr11 = args[3];
- case 3: regs->gr10 = args[2];
- case 2: regs->gr9 = args[1];
- case 1: regs->gr8 = args[0];
- break;
- default:
- BUG();
- }
-}
-
-#endif /* _ASM_SYSCALL_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_TERMIOS_H
-#define _ASM_TERMIOS_H
-
-#include <uapi/asm/termios.h>
-
-/* intr=^C quit=^| erase=del kill=^U
- eof=^D vtime=\0 vmin=\1 sxtc=\0
- start=^Q stop=^S susp=^Z eol=\0
- reprint=^R discard=^U werase=^W lnext=^V
- eol2=\0
-*/
-#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
-#include <asm-generic/termios-base.h>
-#endif /* _ASM_TERMIOS_H */
+++ /dev/null
-/* thread_info.h: description
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * Derived from include/asm-i386/thread_info.h
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_THREAD_INFO_H
-#define _ASM_THREAD_INFO_H
-
-#ifdef __KERNEL__
-
-#ifndef __ASSEMBLY__
-#include <asm/processor.h>
-#endif
-
-#define THREAD_SIZE 8192
-
-/*
- * low level task data that entry.S needs immediate access to
- * - this struct should fit entirely inside of one cache line
- * - this struct shares the supervisor stack pages
- * - if the contents of this structure are changed, the assembly constants must also be changed
- */
-#ifndef __ASSEMBLY__
-
-struct thread_info {
- struct task_struct *task; /* main task structure */
- unsigned long flags; /* low level flags */
- unsigned long status; /* thread-synchronous flags */
- __u32 cpu; /* current CPU */
- int preempt_count; /* 0 => preemptable, <0 => BUG */
-
- mm_segment_t addr_limit; /* thread address space:
- * 0-0xBFFFFFFF for user-thead
- * 0-0xFFFFFFFF for kernel-thread
- */
-
- __u8 supervisor_stack[0];
-};
-
-#else /* !__ASSEMBLY__ */
-
-#include <asm/asm-offsets.h>
-
-#endif
-
-/*
- * macros/functions for gaining access to the thread information structure
- */
-#ifndef __ASSEMBLY__
-
-#define INIT_THREAD_INFO(tsk) \
-{ \
- .task = &tsk, \
- .flags = 0, \
- .cpu = 0, \
- .preempt_count = INIT_PREEMPT_COUNT, \
- .addr_limit = KERNEL_DS, \
-}
-
-/* how to get the thread information struct from C */
-register struct thread_info *__current_thread_info asm("gr15");
-
-#define current_thread_info() ({ __current_thread_info; })
-
-#endif /* __ASSEMBLY__ */
-
-/*
- * thread information flags
- * - these are process state flags that various assembly files may need to access
- * - pending work-to-be-done flags are in LSW
- * - other flags in MSW
- */
-#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
-#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
-#define TIF_SIGPENDING 2 /* signal pending */
-#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
-#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */
-#define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */
-#define TIF_MEMDIE 7 /* is terminating due to OOM killer */
-
-#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
-#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
-#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
-#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
-
-/* work to do on interrupt/exception return */
-#define _TIF_WORK_MASK \
- (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_SINGLESTEP)
-
-/* work to do on any return to u-space */
-#define _TIF_ALLWORK_MASK (_TIF_WORK_MASK | _TIF_SYSCALL_TRACE)
-
-#if _TIF_ALLWORK_MASK >= 0x2000
-#error "_TIF_ALLWORK_MASK won't fit in an ANDI now (see entry.S)"
-#endif
-
-/*
- * Thread-synchronous status.
- *
- * This is different from the flags in that nobody else
- * ever touches our thread-synchronous status, so we don't
- * have to worry about atomic accesses.
- */
-#define TS_USEDFPM 0x0001 /* FPU/Media was used by this task this quantum (SMP) */
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_THREAD_INFO_H */
+++ /dev/null
-/* timer-regs.h: hardware timer register definitions
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_TIMER_REGS_H
-#define _ASM_TIMER_REGS_H
-
-#include <asm/sections.h>
-
-extern unsigned long __nongprelbss __clkin_clock_speed_HZ;
-extern unsigned long __nongprelbss __ext_bus_clock_speed_HZ;
-extern unsigned long __nongprelbss __res_bus_clock_speed_HZ;
-extern unsigned long __nongprelbss __sdram_clock_speed_HZ;
-extern unsigned long __nongprelbss __core_bus_clock_speed_HZ;
-extern unsigned long __nongprelbss __core_clock_speed_HZ;
-extern unsigned long __nongprelbss __dsu_clock_speed_HZ;
-extern unsigned long __nongprelbss __serial_clock_speed_HZ;
-
-#define __get_CLKC() ({ *(volatile unsigned long *)(0xfeff9a00); })
-
-static inline void __set_CLKC(unsigned long v)
-{
- int tmp;
-
- asm volatile(" st%I0.p %2,%M0 \n"
- " setlos %3,%1 \n"
- " membar \n"
- "0: \n"
- " subicc %1,#1,%1,icc0 \n"
- " bnc icc0,#1,0b \n"
- : "=m"(*(volatile unsigned long *) 0xfeff9a00), "=r"(tmp)
- : "r"(v), "i"(256)
- : "icc0");
-}
-
-#define __get_TCTR() ({ *(volatile unsigned long *)(0xfeff9418); })
-#define __get_TPRV() ({ *(volatile unsigned long *)(0xfeff9420); })
-#define __get_TPRCKSL() ({ *(volatile unsigned long *)(0xfeff9428); })
-#define __get_TCSR(T) ({ *(volatile unsigned long *)(0xfeff9400 + 8 * (T)); })
-#define __get_TxCKSL(T) ({ *(volatile unsigned long *)(0xfeff9430 + 8 * (T)); })
-
-#define __get_TCSR_DATA(T) ({ __get_TCSR(T) >> 24; })
-
-#define __set_TCTR(V) do { *(volatile unsigned long *)(0xfeff9418) = (V); mb(); } while(0)
-#define __set_TPRV(V) do { *(volatile unsigned long *)(0xfeff9420) = (V) << 24; mb(); } while(0)
-#define __set_TPRCKSL(V) do { *(volatile unsigned long *)(0xfeff9428) = (V); mb(); } while(0)
-#define __set_TCSR(T,V) \
-do { *(volatile unsigned long *)(0xfeff9400 + 8 * (T)) = (V); mb(); } while(0)
-
-#define __set_TxCKSL(T,V) \
-do { *(volatile unsigned long *)(0xfeff9430 + 8 * (T)) = (V); mb(); } while(0)
-
-#define __set_TCSR_DATA(T,V) __set_TCSR(T, (V) << 24)
-#define __set_TxCKSL_DATA(T,V) __set_TxCKSL(T, TxCKSL_EIGHT | __TxCKSL_SELECT((V)))
-
-/* clock control register */
-#define CLKC_CMODE 0x0f000000
-#define CLKC_SLPL 0x000f0000
-#define CLKC_P0 0x00000100
-#define CLKC_CM 0x00000003
-
-#define CLKC_CMODE_s 24
-
-/* timer control register - non-readback mode */
-#define TCTR_MODE_0 0x00000000
-#define TCTR_MODE_2 0x04000000
-#define TCTR_MODE_4 0x08000000
-#define TCTR_MODE_5 0x0a000000
-#define TCTR_RL_LATCH 0x00000000
-#define TCTR_RL_RW_LOW8 0x10000000
-#define TCTR_RL_RW_HIGH8 0x20000000
-#define TCTR_RL_RW_LH8 0x30000000
-#define TCTR_SC_CTR0 0x00000000
-#define TCTR_SC_CTR1 0x40000000
-#define TCTR_SC_CTR2 0x80000000
-
-/* timer control register - readback mode */
-#define TCTR_CNT0 0x02000000
-#define TCTR_CNT1 0x04000000
-#define TCTR_CNT2 0x08000000
-#define TCTR_NSTATUS 0x10000000
-#define TCTR_NCOUNT 0x20000000
-#define TCTR_SC_READBACK 0xc0000000
-
-/* timer control status registers - non-readback mode */
-#define TCSRx_DATA 0xff000000
-
-/* timer control status registers - readback mode */
-#define TCSRx_OUTPUT 0x80000000
-#define TCSRx_NULLCOUNT 0x40000000
-#define TCSRx_RL 0x30000000
-#define TCSRx_MODE 0x07000000
-
-/* timer clock select registers */
-#define TxCKSL_SELECT 0x0f000000
-#define __TxCKSL_SELECT(X) ((X) << 24)
-#define TxCKSL_EIGHT 0xf0000000
-
-#endif /* _ASM_TIMER_REGS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/* timex.h: FR-V architecture timex specifications
- */
-#ifndef _ASM_TIMEX_H
-#define _ASM_TIMEX_H
-
-#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
-#define CLOCK_TICK_FACTOR 20 /* Factor of both 1000000 and CLOCK_TICK_RATE */
-
-typedef unsigned long cycles_t;
-
-static inline cycles_t get_cycles(void)
-{
- return 0;
-}
-
-#define vxtime_lock() do {} while (0)
-#define vxtime_unlock() do {} while (0)
-
-/* This attribute is used in include/linux/jiffies.h alongside with
- * __cacheline_aligned_in_smp. It is assumed that __cacheline_aligned_in_smp
- * for frv does not contain another section specification.
- */
-#define __jiffy_arch_data __attribute__((__section__(".data")))
-
-#endif
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_TLB_H
-#define _ASM_TLB_H
-
-#include <asm/tlbflush.h>
-
-#ifdef CONFIG_MMU
-extern void check_pgt_cache(void);
-#else
-#define check_pgt_cache() do {} while(0)
-#endif
-
-/*
- * we don't need any special per-pte or per-vma handling...
- */
-#define tlb_start_vma(tlb, vma) do { } while (0)
-#define tlb_end_vma(tlb, vma) do { } while (0)
-#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
-
-/*
- * .. because we flush the whole mm when it fills up
- */
-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
-
-#include <asm-generic/tlb.h>
-
-#endif /* _ASM_TLB_H */
-
+++ /dev/null
-/* tlbflush.h: TLB flushing functions
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_TLBFLUSH_H
-#define _ASM_TLBFLUSH_H
-
-#include <linux/mm.h>
-#include <asm/processor.h>
-
-#ifdef CONFIG_MMU
-
-#ifndef __ASSEMBLY__
-extern asmlinkage void __flush_tlb_all(void);
-extern asmlinkage void __flush_tlb_mm(unsigned long contextid);
-extern asmlinkage void __flush_tlb_page(unsigned long contextid, unsigned long start);
-extern asmlinkage void __flush_tlb_range(unsigned long contextid,
- unsigned long start, unsigned long end);
-#endif /* !__ASSEMBLY__ */
-
-#define flush_tlb_all() \
-do { \
- preempt_disable(); \
- __flush_tlb_all(); \
- preempt_enable(); \
-} while(0)
-
-#define flush_tlb_mm(mm) \
-do { \
- preempt_disable(); \
- __flush_tlb_mm((mm)->context.id); \
- preempt_enable(); \
-} while(0)
-
-#define flush_tlb_range(vma,start,end) \
-do { \
- preempt_disable(); \
- __flush_tlb_range((vma)->vm_mm->context.id, start, end); \
- preempt_enable(); \
-} while(0)
-
-#define flush_tlb_page(vma,addr) \
-do { \
- preempt_disable(); \
- __flush_tlb_page((vma)->vm_mm->context.id, addr); \
- preempt_enable(); \
-} while(0)
-
-
-#define __flush_tlb_global() flush_tlb_all()
-#define flush_tlb() flush_tlb_all()
-#define flush_tlb_kernel_range(start, end) flush_tlb_all()
-
-#else
-
-#define flush_tlb() BUG()
-#define flush_tlb_all() BUG()
-#define flush_tlb_mm(mm) BUG()
-#define flush_tlb_page(vma,addr) BUG()
-#define flush_tlb_range(mm,start,end) BUG()
-#define flush_tlb_kernel_range(start, end) BUG()
-
-#endif
-
-
-#endif /* _ASM_TLBFLUSH_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_TOPOLOGY_H
-#define _ASM_TOPOLOGY_H
-
-#ifdef CONFIG_NUMA
-
-#error NUMA not supported yet
-
-#endif /* CONFIG_NUMA */
-
-#include <asm-generic/topology.h>
-
-#endif /* _ASM_TOPOLOGY_H */
+++ /dev/null
-/* types.h: FRV types
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_TYPES_H
-#define _ASM_TYPES_H
-
-#include <uapi/asm/types.h>
-
-/*
- * These aren't exported outside the kernel to avoid name space clashes
- */
-
-#define BITS_PER_LONG 32
-
-#endif /* _ASM_TYPES_H */
+++ /dev/null
-/* uaccess.h: userspace accessor functions
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_UACCESS_H
-#define _ASM_UACCESS_H
-
-/*
- * User space memory access functions
- */
-#include <linux/mm.h>
-#include <asm/segment.h>
-#include <asm/sections.h>
-#include <asm/extable.h>
-
-#define __ptr(x) ((unsigned long __force *)(x))
-
-/*
- * check that a range of addresses falls within the current address limit
- */
-static inline int ___range_ok(unsigned long addr, unsigned long size)
-{
-#ifdef CONFIG_MMU
- int flag = -EFAULT, tmp;
-
- asm volatile (
- " addcc %3,%2,%1,icc0 \n" /* set C-flag if addr+size>4GB */
- " subcc.p %1,%4,gr0,icc1 \n" /* jump if addr+size>limit */
- " bc icc0,#0,0f \n"
- " bhi icc1,#0,0f \n"
- " setlos #0,%0 \n" /* mark okay */
- "0: \n"
- : "=r"(flag), "=&r"(tmp)
- : "r"(addr), "r"(size), "r"(get_addr_limit()), "0"(flag)
- );
-
- return flag;
-
-#else
-
- if (addr < memory_start ||
- addr > memory_end ||
- size > memory_end - memory_start ||
- addr + size > memory_end)
- return -EFAULT;
-
- return 0;
-#endif
-}
-
-#define __range_ok(addr,size) ___range_ok((unsigned long) (addr), (unsigned long) (size))
-
-#define access_ok(type,addr,size) (__range_ok((void __user *)(addr), (size)) == 0)
-#define __access_ok(addr,size) (__range_ok((addr), (size)) == 0)
-
-
-/*
- * These are the main single-value transfer routines. They automatically
- * use the right size if we just have the right pointer type.
- */
-#define __put_user(x, ptr) \
-({ \
- int __pu_err = 0; \
- \
- typeof(*(ptr)) __pu_val = (x); \
- __chk_user_ptr(ptr); \
- \
- switch (sizeof (*(ptr))) { \
- case 1: \
- __put_user_asm(__pu_err, __pu_val, ptr, "b", "r"); \
- break; \
- case 2: \
- __put_user_asm(__pu_err, __pu_val, ptr, "h", "r"); \
- break; \
- case 4: \
- __put_user_asm(__pu_err, __pu_val, ptr, "", "r"); \
- break; \
- case 8: \
- __put_user_asm(__pu_err, __pu_val, ptr, "d", "e"); \
- break; \
- default: \
- __pu_err = __put_user_bad(); \
- break; \
- } \
- __pu_err; \
-})
-
-#define put_user(x, ptr) \
-({ \
- typeof(*(ptr)) __user *_p = (ptr); \
- int _e; \
- \
- _e = __range_ok(_p, sizeof(*_p)); \
- if (_e == 0) \
- _e = __put_user((x), _p); \
- _e; \
-})
-
-extern int __put_user_bad(void);
-
-/*
- * Tell gcc we read from memory instead of writing: this is because
- * we do not write to any memory gcc knows about, so there are no
- * aliasing issues.
- */
-
-#ifdef CONFIG_MMU
-
-#define __put_user_asm(err,x,ptr,dsize,constraint) \
-do { \
- asm volatile("1: st"dsize"%I1 %2,%M1 \n" \
- "2: \n" \
- ".subsection 2 \n" \
- "3: setlos %3,%0 \n" \
- " bra 2b \n" \
- ".previous \n" \
- ".section __ex_table,\"a\" \n" \
- " .balign 8 \n" \
- " .long 1b,3b \n" \
- ".previous" \
- : "=r" (err) \
- : "m" (*__ptr(ptr)), constraint (x), "i"(-EFAULT), "0"(err) \
- : "memory"); \
-} while (0)
-
-#else
-
-#define __put_user_asm(err,x,ptr,bwl,con) \
-do { \
- asm(" st"bwl"%I0 %1,%M0 \n" \
- " membar \n" \
- : \
- : "m" (*__ptr(ptr)), con (x) \
- : "memory"); \
-} while (0)
-
-#endif
-
-/*****************************************************************************/
-/*
- *
- */
-#define __get_user(x, ptr) \
-({ \
- int __gu_err = 0; \
- __chk_user_ptr(ptr); \
- \
- switch (sizeof(*(ptr))) { \
- case 1: { \
- unsigned char __gu_val; \
- __get_user_asm(__gu_err, __gu_val, ptr, "ub", "=r"); \
- (x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
- break; \
- } \
- case 2: { \
- unsigned short __gu_val; \
- __get_user_asm(__gu_err, __gu_val, ptr, "uh", "=r"); \
- (x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
- break; \
- } \
- case 4: { \
- unsigned int __gu_val; \
- __get_user_asm(__gu_err, __gu_val, ptr, "", "=r"); \
- (x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
- break; \
- } \
- case 8: { \
- unsigned long long __gu_val; \
- __get_user_asm(__gu_err, __gu_val, ptr, "d", "=e"); \
- (x) = *(__force __typeof__(*(ptr)) *) &__gu_val; \
- break; \
- } \
- default: \
- __gu_err = __get_user_bad(); \
- break; \
- } \
- __gu_err; \
-})
-
-#define get_user(x, ptr) \
-({ \
- const typeof(*(ptr)) __user *_p = (ptr);\
- int _e; \
- \
- _e = __range_ok(_p, sizeof(*_p)); \
- if (likely(_e == 0)) \
- _e = __get_user((x), _p); \
- else \
- (x) = (typeof(x)) 0; \
- _e; \
-})
-
-extern int __get_user_bad(void);
-
-#ifdef CONFIG_MMU
-
-#define __get_user_asm(err,x,ptr,dtype,constraint) \
-do { \
- asm("1: ld"dtype"%I2 %M2,%1 \n" \
- "2: \n" \
- ".subsection 2 \n" \
- "3: setlos %3,%0 \n" \
- " setlos #0,%1 \n" \
- " bra 2b \n" \
- ".previous \n" \
- ".section __ex_table,\"a\" \n" \
- " .balign 8 \n" \
- " .long 1b,3b \n" \
- ".previous" \
- : "=r" (err), constraint (x) \
- : "m" (*__ptr(ptr)), "i"(-EFAULT), "0"(err) \
- ); \
-} while(0)
-
-#else
-
-#define __get_user_asm(err,x,ptr,bwl,con) \
- asm(" ld"bwl"%I1 %M1,%0 \n" \
- " membar \n" \
- : con(x) \
- : "m" (*__ptr(ptr)))
-
-#endif
-
-/*****************************************************************************/
-/*
- *
- */
-
-#define ____force(x) (__force void *)(void __user *)(x)
-#ifdef CONFIG_MMU
-extern long __memset_user(void *dst, unsigned long count);
-extern long __memcpy_user(void *dst, const void *src, unsigned long count);
-
-#define __clear_user(dst,count) __memset_user(____force(dst), (count))
-
-#else
-
-#define __clear_user(dst,count) (memset(____force(dst), 0, (count)), 0)
-
-#endif
-
-static inline unsigned long
-raw_copy_from_user(void *to, const void __user *from, unsigned long n)
-{
-#ifdef CONFIG_MMU
- return __memcpy_user(to, (__force const void *)from, n);
-#else
- memcpy(to, (__force const void *)from, n);
- return 0;
-#endif
-}
-
-static inline unsigned long
-raw_copy_to_user(void __user *to, const void *from, unsigned long n)
-{
-#ifdef CONFIG_MMU
- return __memcpy_user((__force void *)to, from, n);
-#else
- memcpy((__force void *)to, from, n);
- return 0;
-#endif
-}
-#define INLINE_COPY_TO_USER
-#define INLINE_COPY_FROM_USER
-
-static inline unsigned long __must_check
-clear_user(void __user *to, unsigned long n)
-{
- if (likely(__access_ok(to, n)))
- n = __clear_user(to, n);
- return n;
-}
-
-extern long strncpy_from_user(char *dst, const char __user *src, long count);
-extern long strnlen_user(const char __user *src, long count);
-
-#endif /* _ASM_UACCESS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_UCONTEXT_H
-#define _ASM_UCONTEXT_H
-
-struct ucontext {
- unsigned long uc_flags;
- struct ucontext *uc_link;
- stack_t uc_stack;
- struct sigcontext uc_mcontext;
- sigset_t uc_sigmask; /* mask last for extensibility */
-};
-
-#endif
+++ /dev/null
-/* unaligned.h: unaligned access handler
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_UNALIGNED_H
-#define _ASM_UNALIGNED_H
-
-#include <linux/unaligned/le_byteshift.h>
-#include <linux/unaligned/be_struct.h>
-#include <linux/unaligned/generic.h>
-
-#define get_unaligned __get_unaligned_be
-#define put_unaligned __put_unaligned_be
-
-#endif /* _ASM_UNALIGNED_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_UNISTD_H_
-#define _ASM_UNISTD_H_
-
-#include <uapi/asm/unistd.h>
-
-
-#define NR_syscalls 338
-
-/* #define __ARCH_WANT_OLD_READDIR */
-#define __ARCH_WANT_OLD_STAT
-#define __ARCH_WANT_STAT64
-#define __ARCH_WANT_SYS_ALARM
-/* #define __ARCH_WANT_SYS_GETHOSTNAME */
-#define __ARCH_WANT_SYS_IPC
-#define __ARCH_WANT_SYS_PAUSE
-/* #define __ARCH_WANT_SYS_SIGNAL */
-#define __ARCH_WANT_SYS_TIME
-#define __ARCH_WANT_SYS_UTIME
-#define __ARCH_WANT_SYS_WAITPID
-#define __ARCH_WANT_SYS_SOCKETCALL
-#define __ARCH_WANT_SYS_FADVISE64
-#define __ARCH_WANT_SYS_GETPGRP
-#define __ARCH_WANT_SYS_LLSEEK
-#define __ARCH_WANT_SYS_NICE
-/* #define __ARCH_WANT_SYS_OLD_GETRLIMIT */
-#define __ARCH_WANT_SYS_OLDUMOUNT
-/* #define __ARCH_WANT_SYS_SIGPENDING */
-#define __ARCH_WANT_SYS_SIGPROCMASK
-#define __ARCH_WANT_SYS_FORK
-#define __ARCH_WANT_SYS_VFORK
-#define __ARCH_WANT_SYS_CLONE
-
-#endif /* _ASM_UNISTD_H_ */
+++ /dev/null
-/* user.h: FR-V core file format stuff
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_USER_H
-#define _ASM_USER_H
-
-#include <asm/page.h>
-#include <asm/registers.h>
-
-/* Core file format: The core file is written in such a way that gdb
- * can understand it and provide useful information to the user (under
- * linux we use the 'trad-core' bfd). There are quite a number of
- * obstacles to being able to view the contents of the floating point
- * registers, and until these are solved you will not be able to view
- * the contents of them. Actually, you can read in the core file and
- * look at the contents of the user struct to find out what the
- * floating point registers contain.
- *
- * The actual file contents are as follows:
- * UPAGE:
- * 1 page consisting of a user struct that tells gdb what is present
- * in the file. Directly after this is a copy of the task_struct,
- * which is currently not used by gdb, but it may come in useful at
- * some point. All of the registers are stored as part of the
- * upage. The upage should always be only one page.
- *
- * DATA:
- * The data area is stored. We use current->end_text to
- * current->brk to pick up all of the user variables, plus any
- * memory that may have been malloced. No attempt is made to
- * determine if a page is demand-zero or if a page is totally
- * unused, we just cover the entire range. All of the addresses are
- * rounded in such a way that an integral number of pages is
- * written.
- *
- * STACK:
- * We need the stack information in order to get a meaningful
- * backtrace. We need to write the data from (esp) to
- * current->start_stack, so we round each of these off in order to
- * be able to write an integer number of pages. The minimum core
- * file size is 3 pages, or 12288 bytes.
- */
-
-/* When the kernel dumps core, it starts by dumping the user struct -
- * this will be used by gdb to figure out where the data and stack segments
- * are within the file, and what virtual addresses to use.
- */
-struct user {
- /* We start with the registers, to mimic the way that "memory" is returned
- * from the ptrace(3,...) function. */
- struct user_context regs;
-
- /* The rest of this junk is to help gdb figure out what goes where */
- unsigned long u_tsize; /* Text segment size (pages). */
- unsigned long u_dsize; /* Data segment size (pages). */
- unsigned long u_ssize; /* Stack segment size (pages). */
- unsigned long start_code; /* Starting virtual address of text. */
- unsigned long start_stack; /* Starting virtual address of stack area.
- * This is actually the bottom of the stack,
- * the top of the stack is always found in the
- * esp register. */
- long int signal; /* Signal that caused the core dump. */
-
- unsigned long magic; /* To uniquely identify a core file */
- char u_comm[32]; /* User command that was responsible */
-};
-
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
-
-#endif
+++ /dev/null
-/* vga.h: VGA register stuff
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _ASM_VGA_H
-#define _ASM_VGA_H
-
-
-
-#endif /* _ASM_VGA_H */
+++ /dev/null
-/* virtconvert.h: virtual/physical/page address conversion
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_VIRTCONVERT_H
-#define _ASM_VIRTCONVERT_H
-
-/*
- * Macros used for converting between virtual and physical mappings.
- */
-
-#ifdef __KERNEL__
-
-#include <asm/setup.h>
-
-#ifdef CONFIG_MMU
-
-#define phys_to_virt(vaddr) ((void *) ((unsigned long)(vaddr) + PAGE_OFFSET))
-#define virt_to_phys(vaddr) ((unsigned long) (vaddr) - PAGE_OFFSET)
-
-#else
-
-#define phys_to_virt(vaddr) ((void *) (vaddr))
-#define virt_to_phys(vaddr) ((unsigned long) (vaddr))
-
-#endif
-
-#define virt_to_bus virt_to_phys
-#define bus_to_virt phys_to_virt
-
-#define __page_address(page) (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
-#define page_to_phys(page) virt_to_phys((void *)__page_address(page))
-
-#endif
-#endif
+++ /dev/null
-#include <asm-generic/xor.h>
+++ /dev/null
-# UAPI Header export list
-include include/uapi/asm-generic/Kbuild.asm
-
-generic-y += siginfo.h
-generic-y += bpf_perf_event.h
+++ /dev/null
-#ifndef __FRV_AUXVEC_H
-#define __FRV_AUXVEC_H
-
-#endif
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/bitsperlong.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_BYTEORDER_H
-#define _ASM_BYTEORDER_H
-
-#include <linux/byteorder/big_endian.h>
-
-#endif /* _ASM_BYTEORDER_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_ERRNO_H
-#define _ASM_ERRNO_H
-
-#include <asm-generic/errno.h>
-
-#endif /* _ASM_ERRNO_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/fcntl.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/ioctl.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef __ASM_IOCTLS_H__
-#define __ASM_IOCTLS_H__
-
-#define TIOCTTYGSTRUCT 0x5426 /* For debugging only */
-#define FIOQSIZE 0x545E
-
-#include <asm-generic/ioctls.h>
-
-#endif /* __ASM_IOCTLS_H__ */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/ipcbuf.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/kvm_para.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/mman.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_MSGBUF_H
-#define _ASM_MSGBUF_H
-
-/*
- * The msqid64_ds structure for FR-V architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem
- * - 2 miscellaneous 32-bit values
- */
-
-struct msqid64_ds {
- struct ipc64_perm msg_perm;
- __kernel_time_t msg_stime; /* last msgsnd time */
- unsigned long __unused1;
- __kernel_time_t msg_rtime; /* last msgrcv time */
- unsigned long __unused2;
- __kernel_time_t msg_ctime; /* last change time */
- unsigned long __unused3;
- unsigned long msg_cbytes; /* current number of bytes on queue */
- unsigned long msg_qnum; /* number of messages in queue */
- unsigned long msg_qbytes; /* max number of bytes on queue */
- __kernel_pid_t msg_lspid; /* pid of last msgsnd */
- __kernel_pid_t msg_lrpid; /* last receive pid */
- unsigned long __unused4;
- unsigned long __unused5;
-};
-
-#endif /* _ASM_MSGBUF_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_PARAM_H
-#define _ASM_PARAM_H
-
-#define EXEC_PAGESIZE 16384
-
-#include <asm-generic/param.h>
-
-#endif /* _ASM_PARAM_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_POLL_H
-#define _ASM_POLL_H
-
-#define POLLWRNORM POLLOUT
-#define POLLWRBAND 256
-
-#include <asm-generic/poll.h>
-#undef POLLREMOVE
-
-#endif
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_POSIX_TYPES_H
-#define _ASM_POSIX_TYPES_H
-
-/*
- * This file is generally used by user-level software, so you need to
- * be a little careful about namespace pollution etc. Also, we cannot
- * assume GCC is being used.
- */
-
-typedef unsigned short __kernel_mode_t;
-#define __kernel_mode_t __kernel_mode_t
-
-typedef unsigned short __kernel_ipc_pid_t;
-#define __kernel_ipc_pid_t __kernel_ipc_pid_t
-
-typedef unsigned short __kernel_uid_t;
-typedef unsigned short __kernel_gid_t;
-#define __kernel_uid_t __kernel_uid_t
-
-typedef unsigned short __kernel_old_dev_t;
-#define __kernel_old_dev_t __kernel_old_dev_t
-
-#include <asm-generic/posix_types.h>
-
-#endif
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
-/* ptrace.h: ptrace() relevant definitions
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _UAPI_ASM_PTRACE_H
-#define _UAPI_ASM_PTRACE_H
-
-#include <asm/registers.h>
-
-
-#define PT_PSR 0
-#define PT_ISR 1
-#define PT_CCR 2
-#define PT_CCCR 3
-#define PT_LR 4
-#define PT_LCR 5
-#define PT_PC 6
-
-#define PT__STATUS 7 /* exception status */
-#define PT_SYSCALLNO 8 /* syscall number or -1 */
-#define PT_ORIG_GR8 9 /* saved GR8 for signal handling */
-#define PT_GNER0 10
-#define PT_GNER1 11
-#define PT_IACC0H 12
-#define PT_IACC0L 13
-
-#define PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63 */
-#define PT_FR(j) ( 78 + (j)) /* FRj for 0<=j<=63 */
-#define PT_FNER(j) (142 + (j)) /* FNERj for 0<=j<=1 */
-#define PT_MSR(j) (144 + (j)) /* MSRj for 0<=j<=2 */
-#define PT_ACC(j) (146 + (j)) /* ACCj for 0<=j<=7 */
-#define PT_ACCG(jklm) (154 + (jklm)) /* ACCGjklm for 0<=jklm<=1 (reads four regs per slot) */
-#define PT_FSR(j) (156 + (j)) /* FSRj for 0<=j<=0 */
-#define PT__GPEND 78
-#define PT__END 157
-
-#define PT_TBR PT_GR(0)
-#define PT_SP PT_GR(1)
-#define PT_FP PT_GR(2)
-#define PT_PREV_FRAME PT_GR(28) /* previous exception frame pointer (old gr28 value) */
-#define PT_CURR_TASK PT_GR(29) /* current task */
-
-
-/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
-#define PTRACE_GETREGS 12
-#define PTRACE_SETREGS 13
-#define PTRACE_GETFPREGS 14
-#define PTRACE_SETFPREGS 15
-#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
-
-#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
-#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
-
-#endif /* _UAPI_ASM_PTRACE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
-/* registers.h: register frame declarations
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * notes:
- *
- * (1) that the members of all these structures are carefully aligned to permit
- * usage of STD/STDF instructions
- *
- * (2) if you change these structures, you must change the code in
- * arch/frvnommu/kernel/{break.S,entry.S,switch_to.S,gdb-stub.c}
- *
- *
- * the kernel stack space block looks like this:
- *
- * +0x2000 +----------------------
- * | union {
- * | struct frv_frame0 {
- * | struct user_context {
- * | struct user_int_regs
- * | struct user_fpmedia_regs
- * | }
- * | struct frv_debug_regs
- * | }
- * | struct pt_regs [user exception]
- * | }
- * +---------------------- <-- __kernel_frame0_ptr (maybe GR28)
- * |
- * | kernel stack
- * |
- * |......................
- * | struct pt_regs [kernel exception]
- * |...................... <-- __kernel_frame0_ptr (maybe GR28)
- * |
- * | kernel stack
- * |
- * |...................... <-- stack pointer (GR1)
- * |
- * | unused stack space
- * |
- * +----------------------
- * | struct thread_info
- * +0x0000 +---------------------- <-- __current_thread_info (GR15);
- *
- * note that GR28 points to the current exception frame
- */
-
-#ifndef _ASM_REGISTERS_H
-#define _ASM_REGISTERS_H
-
-#ifndef __ASSEMBLY__
-#define __OFFSET(X,N) ((X)+(N)*4)
-#define __OFFSETC(X,N) xxxxxxxxxxxxxxxxxxxxxxxx
-#else
-#define __OFFSET(X,N) ((X)+(N)*4)
-#define __OFFSETC(X,N) ((X)+(N))
-#endif
-
-/*****************************************************************************/
-/*
- * Exception/Interrupt frame
- * - held on kernel stack
- * - 8-byte aligned on stack (old SP is saved in frame)
- * - GR0 is fixed 0, so we don't save it
- */
-#ifndef __ASSEMBLY__
-
-struct pt_regs {
- unsigned long psr; /* Processor Status Register */
- unsigned long isr; /* Integer Status Register */
- unsigned long ccr; /* Condition Code Register */
- unsigned long cccr; /* Condition Code for Conditional Insns Register */
- unsigned long lr; /* Link Register */
- unsigned long lcr; /* Loop Count Register */
- unsigned long pc; /* Program Counter Register */
- unsigned long __status; /* exception status */
- unsigned long syscallno; /* syscall number or -1 */
- unsigned long orig_gr8; /* original syscall arg #1 */
- unsigned long gner0;
- unsigned long gner1;
- unsigned long long iacc0;
- unsigned long tbr; /* GR0 is fixed zero, so we use this for TBR */
- unsigned long sp; /* GR1: USP/KSP */
- unsigned long fp; /* GR2: FP */
- unsigned long gr3;
- unsigned long gr4;
- unsigned long gr5;
- unsigned long gr6;
- unsigned long gr7; /* syscall number */
- unsigned long gr8; /* 1st syscall param; syscall return */
- unsigned long gr9; /* 2nd syscall param */
- unsigned long gr10; /* 3rd syscall param */
- unsigned long gr11; /* 4th syscall param */
- unsigned long gr12; /* 5th syscall param */
- unsigned long gr13; /* 6th syscall param */
- unsigned long gr14;
- unsigned long gr15;
- unsigned long gr16; /* GP pointer */
- unsigned long gr17; /* small data */
- unsigned long gr18; /* PIC/PID */
- unsigned long gr19;
- unsigned long gr20;
- unsigned long gr21;
- unsigned long gr22;
- unsigned long gr23;
- unsigned long gr24;
- unsigned long gr25;
- unsigned long gr26;
- unsigned long gr27;
- struct pt_regs *next_frame; /* GR28 - next exception frame */
- unsigned long gr29; /* GR29 - OS reserved */
- unsigned long gr30; /* GR30 - OS reserved */
- unsigned long gr31; /* GR31 - OS reserved */
-} __attribute__((aligned(8)));
-
-#endif
-
-#define REG__STATUS_STEP 0x00000001 /* - reenable single stepping on return */
-#define REG__STATUS_STEPPED 0x00000002 /* - single step caused exception */
-#define REG__STATUS_BROKE 0x00000004 /* - BREAK insn caused exception */
-#define REG__STATUS_SYSC_ENTRY 0x40000000 /* - T on syscall entry (ptrace.c only) */
-#define REG__STATUS_SYSC_EXIT 0x80000000 /* - T on syscall exit (ptrace.c only) */
-
-#define REG_GR(R) __OFFSET(REG_GR0, (R))
-
-#define REG_SP REG_GR(1)
-#define REG_FP REG_GR(2)
-#define REG_PREV_FRAME REG_GR(28) /* previous exception frame pointer (old gr28 value) */
-#define REG_CURR_TASK REG_GR(29) /* current task */
-
-/*****************************************************************************/
-/*
- * debugging registers
- */
-#ifndef __ASSEMBLY__
-
-struct frv_debug_regs
-{
- unsigned long dcr;
- unsigned long ibar[4] __attribute__((aligned(8)));
- unsigned long dbar[4] __attribute__((aligned(8)));
- unsigned long dbdr[4][4] __attribute__((aligned(8)));
- unsigned long dbmr[4][4] __attribute__((aligned(8)));
-} __attribute__((aligned(8)));
-
-#endif
-
-/*****************************************************************************/
-/*
- * userspace registers
- */
-#ifndef __ASSEMBLY__
-
-struct user_int_regs
-{
- /* integer registers
- * - up to gr[31] mirror pt_regs
- * - total size must be multiple of 8 bytes
- */
- unsigned long psr; /* Processor Status Register */
- unsigned long isr; /* Integer Status Register */
- unsigned long ccr; /* Condition Code Register */
- unsigned long cccr; /* Condition Code for Conditional Insns Register */
- unsigned long lr; /* Link Register */
- unsigned long lcr; /* Loop Count Register */
- unsigned long pc; /* Program Counter Register */
- unsigned long __status; /* exception status */
- unsigned long syscallno; /* syscall number or -1 */
- unsigned long orig_gr8; /* original syscall arg #1 */
- unsigned long gner[2];
- unsigned long long iacc[1];
-
- union {
- unsigned long tbr;
- unsigned long gr[64];
- };
-};
-
-struct user_fpmedia_regs
-{
- /* FP/Media registers */
- unsigned long fr[64];
- unsigned long fner[2];
- unsigned long msr[2];
- unsigned long acc[8];
- unsigned char accg[8];
- unsigned long fsr[1];
-};
-
-struct user_context
-{
- struct user_int_regs i;
- struct user_fpmedia_regs f;
-
- /* we provide a context extension so that we can save the regs for CPUs that
- * implement many more of Fujitsu's lavish register spec
- */
- void *extension;
-} __attribute__((aligned(8)));
-
-struct frv_frame0 {
- union {
- struct pt_regs regs;
- struct user_context uc;
- };
-
- struct frv_debug_regs debug;
-
-} __attribute__((aligned(32)));
-
-#endif
-
-#define __INT_GR(R) __OFFSET(__INT_GR0, (R))
-
-#define __FPMEDIA_FR(R) __OFFSET(__FPMEDIA_FR0, (R))
-#define __FPMEDIA_FNER(R) __OFFSET(__FPMEDIA_FNER0, (R))
-#define __FPMEDIA_MSR(R) __OFFSET(__FPMEDIA_MSR0, (R))
-#define __FPMEDIA_ACC(R) __OFFSET(__FPMEDIA_ACC0, (R))
-#define __FPMEDIA_ACCG(R) __OFFSETC(__FPMEDIA_ACCG0, (R))
-#define __FPMEDIA_FSR(R) __OFFSET(__FPMEDIA_FSR0, (R))
-
-#define __THREAD_GR(R) __OFFSET(__THREAD_GR16, (R) - 16)
-
-#endif /* _ASM_REGISTERS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_RESOURCE_H
-#define _ASM_RESOURCE_H
-
-#include <asm-generic/resource.h>
-
-#endif /* _ASM_RESOURCE_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SEMBUF_H
-#define _ASM_SEMBUF_H
-
-/*
- * The semid64_ds structure for FR-V architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem
- * - 2 miscellaneous 32-bit values
- */
-
-struct semid64_ds {
- struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
- __kernel_time_t sem_otime; /* last semop time */
- unsigned long __unused1;
- __kernel_time_t sem_ctime; /* last change time */
- unsigned long __unused2;
- unsigned long sem_nsems; /* no. of semaphores in array */
- unsigned long __unused3;
- unsigned long __unused4;
-};
-
-#endif /* _ASM_SEMBUF_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
-/* setup.h: setup stuff
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _UAPI_ASM_SETUP_H
-#define _UAPI_ASM_SETUP_H
-
-#define COMMAND_LINE_SIZE 512
-
-
-#endif /* _UAPI_ASM_SETUP_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SHMBUF_H
-#define _ASM_SHMBUF_H
-
-/*
- * The shmid64_ds structure for FR-V architecture.
- * Note extra padding because this structure is passed back and forth
- * between kernel and user space.
- *
- * Pad space is left for:
- * - 64-bit time_t to solve y2038 problem
- * - 2 miscellaneous 32-bit values
- */
-
-struct shmid64_ds {
- struct ipc64_perm shm_perm; /* operation perms */
- size_t shm_segsz; /* size of segment (bytes) */
- __kernel_time_t shm_atime; /* last attach time */
- unsigned long __unused1;
- __kernel_time_t shm_dtime; /* last detach time */
- unsigned long __unused2;
- __kernel_time_t shm_ctime; /* last change time */
- unsigned long __unused3;
- __kernel_pid_t shm_cpid; /* pid of creator */
- __kernel_pid_t shm_lpid; /* pid of last operator */
- unsigned long shm_nattch; /* no. of current attaches */
- unsigned long __unused4;
- unsigned long __unused5;
-};
-
-struct shminfo64 {
- unsigned long shmmax;
- unsigned long shmmin;
- unsigned long shmmni;
- unsigned long shmseg;
- unsigned long shmall;
- unsigned long __unused1;
- unsigned long __unused2;
- unsigned long __unused3;
- unsigned long __unused4;
-};
-
-#endif /* _ASM_SHMBUF_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
-/* sigcontext.h: FRV signal context
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _ASM_SIGCONTEXT_H
-#define _ASM_SIGCONTEXT_H
-
-#include <asm/registers.h>
-
-/*
- * Signal context structure - contains all info to do with the state
- * before the signal handler was invoked. Note: only add new entries
- * to the end of the structure.
- */
-struct sigcontext {
- struct user_context sc_context;
- unsigned long sc_oldmask; /* old sigmask */
-} __attribute__((aligned(8)));
-
-#endif
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _UAPI_ASM_SIGNAL_H
-#define _UAPI_ASM_SIGNAL_H
-
-#include <linux/types.h>
-
-#ifndef __KERNEL__
-/* Here we must cater to libcs that poke about in kernel headers. */
-
-#define NSIG 32
-typedef unsigned long sigset_t;
-
-#endif /* !__KERNEL__ */
-
-#define SA_RESTORER 0x04000000 /* to get struct sigaction correct */
-
-#include <asm-generic/signal.h>
-
-#ifndef __KERNEL__
-/* Here we must cater to libcs that poke about in kernel headers. */
-
-struct sigaction {
- union {
- __sighandler_t _sa_handler;
- void (*_sa_sigaction)(int, struct siginfo *, void *);
- } _u;
- sigset_t sa_mask;
- unsigned long sa_flags;
- void (*sa_restorer)(void);
-};
-
-#define sa_handler _u._sa_handler
-#define sa_sigaction _u._sa_sigaction
-
-#endif /* __KERNEL__ */
-
-#endif /* _UAPI_ASM_SIGNAL_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SOCKET_H
-#define _ASM_SOCKET_H
-
-#include <asm/sockios.h>
-
-/* For setsockopt(2) */
-#define SOL_SOCKET 1
-
-#define SO_DEBUG 1
-#define SO_REUSEADDR 2
-#define SO_TYPE 3
-#define SO_ERROR 4
-#define SO_DONTROUTE 5
-#define SO_BROADCAST 6
-#define SO_SNDBUF 7
-#define SO_RCVBUF 8
-#define SO_SNDBUFFORCE 32
-#define SO_RCVBUFFORCE 33
-#define SO_KEEPALIVE 9
-#define SO_OOBINLINE 10
-#define SO_NO_CHECK 11
-#define SO_PRIORITY 12
-#define SO_LINGER 13
-#define SO_BSDCOMPAT 14
-#define SO_REUSEPORT 15
-#define SO_PASSCRED 16
-#define SO_PEERCRED 17
-#define SO_RCVLOWAT 18
-#define SO_SNDLOWAT 19
-#define SO_RCVTIMEO 20
-#define SO_SNDTIMEO 21
-
-/* Security levels - as per NRL IPv6 - don't actually do anything */
-#define SO_SECURITY_AUTHENTICATION 22
-#define SO_SECURITY_ENCRYPTION_TRANSPORT 23
-#define SO_SECURITY_ENCRYPTION_NETWORK 24
-
-#define SO_BINDTODEVICE 25
-
-/* Socket filtering */
-#define SO_ATTACH_FILTER 26
-#define SO_DETACH_FILTER 27
-#define SO_GET_FILTER SO_ATTACH_FILTER
-
-#define SO_PEERNAME 28
-#define SO_TIMESTAMP 29
-#define SCM_TIMESTAMP SO_TIMESTAMP
-
-#define SO_ACCEPTCONN 30
-
-#define SO_PEERSEC 31
-#define SO_PASSSEC 34
-#define SO_TIMESTAMPNS 35
-#define SCM_TIMESTAMPNS SO_TIMESTAMPNS
-
-#define SO_MARK 36
-
-#define SO_TIMESTAMPING 37
-#define SCM_TIMESTAMPING SO_TIMESTAMPING
-
-#define SO_PROTOCOL 38
-#define SO_DOMAIN 39
-
-#define SO_RXQ_OVFL 40
-
-#define SO_WIFI_STATUS 41
-#define SCM_WIFI_STATUS SO_WIFI_STATUS
-#define SO_PEEK_OFF 42
-
-/* Instruct lower device to use last 4-bytes of skb data as FCS */
-#define SO_NOFCS 43
-
-#define SO_LOCK_FILTER 44
-
-#define SO_SELECT_ERR_QUEUE 45
-
-#define SO_BUSY_POLL 46
-
-#define SO_MAX_PACING_RATE 47
-
-#define SO_BPF_EXTENSIONS 48
-
-#define SO_INCOMING_CPU 49
-
-#define SO_ATTACH_BPF 50
-#define SO_DETACH_BPF SO_DETACH_FILTER
-
-#define SO_ATTACH_REUSEPORT_CBPF 51
-#define SO_ATTACH_REUSEPORT_EBPF 52
-
-#define SO_CNX_ADVICE 53
-
-#define SCM_TIMESTAMPING_OPT_STATS 54
-
-#define SO_MEMINFO 55
-
-#define SO_INCOMING_NAPI_ID 56
-
-#define SO_COOKIE 57
-
-#define SCM_TIMESTAMPING_PKTINFO 58
-
-#define SO_PEERGROUPS 59
-
-#define SO_ZEROCOPY 60
-
-#endif /* _ASM_SOCKET_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SOCKIOS__
-#define _ASM_SOCKIOS__
-
-/* Socket-level I/O control calls. */
-#define FIOSETOWN 0x8901
-#define SIOCSPGRP 0x8902
-#define FIOGETOWN 0x8903
-#define SIOCGPGRP 0x8904
-#define SIOCATMARK 0x8905
-#define SIOCGSTAMP 0x8906 /* Get stamp (timeval) */
-#define SIOCGSTAMPNS 0x8907 /* Get stamp (timespec) */
-
-#endif /* _ASM_SOCKIOS__ */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_STAT_H
-#define _ASM_STAT_H
-
-struct __old_kernel_stat {
- unsigned short st_dev;
- unsigned short st_ino;
- unsigned short st_mode;
- unsigned short st_nlink;
- unsigned short st_uid;
- unsigned short st_gid;
- unsigned short st_rdev;
- unsigned long st_size;
- unsigned long st_atime;
- unsigned long st_mtime;
- unsigned long st_ctime;
-};
-
-/* This matches struct stat in uClibc/glibc. */
-struct stat {
- unsigned char __pad1[6];
- unsigned short st_dev;
-
- unsigned long __pad2;
- unsigned long st_ino;
-
- unsigned short __pad3;
- unsigned short st_mode;
- unsigned short __pad4;
- unsigned short st_nlink;
-
- unsigned short __pad5;
- unsigned short st_uid;
- unsigned short __pad6;
- unsigned short st_gid;
-
- unsigned char __pad7[6];
- unsigned short st_rdev;
-
- unsigned long __pad8;
- unsigned long st_size;
-
- unsigned long __pad9; /* align 64-bit st_blocks to 2-word */
- unsigned long st_blksize;
-
- unsigned long __pad10; /* future possible st_blocks high bits */
- unsigned long st_blocks; /* Number 512-byte blocks allocated. */
-
- unsigned long __unused1;
- unsigned long st_atime;
-
- unsigned long __unused2;
- unsigned long st_mtime;
-
- unsigned long __unused3;
- unsigned long st_ctime;
-
- unsigned long long __unused4;
-};
-
-/* This matches struct stat64 in uClibc/glibc. The layout is exactly
- the same as that of struct stat above, with 64-bit types taking up
- space that was formerly used by padding. stat syscalls are still
- different from stat64, though, in that the former tests for
- overflow. */
-struct stat64 {
- unsigned char __pad1[6];
- unsigned short st_dev;
-
- unsigned long long st_ino;
-
- unsigned int st_mode;
- unsigned int st_nlink;
-
- unsigned long st_uid;
- unsigned long st_gid;
-
- unsigned char __pad2[6];
- unsigned short st_rdev;
-
- long long st_size;
-
- unsigned long __pad3; /* align 64-bit st_blocks to 2-word */
- unsigned long st_blksize;
-
- unsigned long __pad4; /* future possible st_blocks high bits */
- unsigned long st_blocks; /* Number 512-byte blocks allocated. */
-
- unsigned long st_atime_nsec;
- unsigned long st_atime;
-
- unsigned int st_mtime_nsec;
- unsigned long st_mtime;
-
- unsigned long st_ctime_nsec;
- unsigned long st_ctime;
-
- unsigned long long __unused4;
-};
-
-#endif /* _ASM_STAT_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_STATFS_H
-#define _ASM_STATFS_H
-
-#include <asm-generic/statfs.h>
-
-#endif /* _ASM_STATFS_H */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SWAB_H
-#define _ASM_SWAB_H
-
-#include <linux/types.h>
-
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
-# define __SWAB_64_THRU_32__
-#endif
-
-#endif /* _ASM_SWAB_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_TERMBITS_H__
-#define _ASM_TERMBITS_H__
-
-#include <linux/posix_types.h>
-
-typedef unsigned char cc_t;
-typedef unsigned int speed_t;
-typedef unsigned int tcflag_t;
-
-#define NCCS 19
-struct termios {
- tcflag_t c_iflag; /* input mode flags */
- tcflag_t c_oflag; /* output mode flags */
- tcflag_t c_cflag; /* control mode flags */
- tcflag_t c_lflag; /* local mode flags */
- cc_t c_line; /* line discipline */
- cc_t c_cc[NCCS]; /* control characters */
-};
-
-struct termios2 {
- tcflag_t c_iflag; /* input mode flags */
- tcflag_t c_oflag; /* output mode flags */
- tcflag_t c_cflag; /* control mode flags */
- tcflag_t c_lflag; /* local mode flags */
- cc_t c_line; /* line discipline */
- cc_t c_cc[NCCS]; /* control characters */
- speed_t c_ispeed; /* input speed */
- speed_t c_ospeed; /* output speed */
-};
-
-struct ktermios {
- tcflag_t c_iflag; /* input mode flags */
- tcflag_t c_oflag; /* output mode flags */
- tcflag_t c_cflag; /* control mode flags */
- tcflag_t c_lflag; /* local mode flags */
- cc_t c_line; /* line discipline */
- cc_t c_cc[NCCS]; /* control characters */
- speed_t c_ispeed; /* input speed */
- speed_t c_ospeed; /* output speed */
-};
-
-/* c_cc characters */
-#define VINTR 0
-#define VQUIT 1
-#define VERASE 2
-#define VKILL 3
-#define VEOF 4
-#define VTIME 5
-#define VMIN 6
-#define VSWTC 7
-#define VSTART 8
-#define VSTOP 9
-#define VSUSP 10
-#define VEOL 11
-#define VREPRINT 12
-#define VDISCARD 13
-#define VWERASE 14
-#define VLNEXT 15
-#define VEOL2 16
-
-
-/* c_iflag bits */
-#define IGNBRK 0000001
-#define BRKINT 0000002
-#define IGNPAR 0000004
-#define PARMRK 0000010
-#define INPCK 0000020
-#define ISTRIP 0000040
-#define INLCR 0000100
-#define IGNCR 0000200
-#define ICRNL 0000400
-#define IUCLC 0001000
-#define IXON 0002000
-#define IXANY 0004000
-#define IXOFF 0010000
-#define IMAXBEL 0020000
-#define IUTF8 0040000
-
-/* c_oflag bits */
-#define OPOST 0000001
-#define OLCUC 0000002
-#define ONLCR 0000004
-#define OCRNL 0000010
-#define ONOCR 0000020
-#define ONLRET 0000040
-#define OFILL 0000100
-#define OFDEL 0000200
-#define NLDLY 0000400
-#define NL0 0000000
-#define NL1 0000400
-#define CRDLY 0003000
-#define CR0 0000000
-#define CR1 0001000
-#define CR2 0002000
-#define CR3 0003000
-#define TABDLY 0014000
-#define TAB0 0000000
-#define TAB1 0004000
-#define TAB2 0010000
-#define TAB3 0014000
-#define XTABS 0014000
-#define BSDLY 0020000
-#define BS0 0000000
-#define BS1 0020000
-#define VTDLY 0040000
-#define VT0 0000000
-#define VT1 0040000
-#define FFDLY 0100000
-#define FF0 0000000
-#define FF1 0100000
-
-/* c_cflag bit meaning */
-#define CBAUD 0010017
-#define B0 0000000 /* hang up */
-#define B50 0000001
-#define B75 0000002
-#define B110 0000003
-#define B134 0000004
-#define B150 0000005
-#define B200 0000006
-#define B300 0000007
-#define B600 0000010
-#define B1200 0000011
-#define B1800 0000012
-#define B2400 0000013
-#define B4800 0000014
-#define B9600 0000015
-#define B19200 0000016
-#define B38400 0000017
-#define EXTA B19200
-#define EXTB B38400
-#define CSIZE 0000060
-#define CS5 0000000
-#define CS6 0000020
-#define CS7 0000040
-#define CS8 0000060
-#define CSTOPB 0000100
-#define CREAD 0000200
-#define PARENB 0000400
-#define PARODD 0001000
-#define HUPCL 0002000
-#define CLOCAL 0004000
-#define CBAUDEX 0010000
-#define BOTHER 0010000
-#define B57600 0010001
-#define B115200 0010002
-#define B230400 0010003
-#define B460800 0010004
-#define B500000 0010005
-#define B576000 0010006
-#define B921600 0010007
-#define B1000000 0010010
-#define B1152000 0010011
-#define B1500000 0010012
-#define B2000000 0010013
-#define B2500000 0010014
-#define B3000000 0010015
-#define B3500000 0010016
-#define B4000000 0010017
-#define CIBAUD 002003600000 /* Input baud rate */
-#define CTVB 004000000000 /* VisioBraille Terminal flow control */
-#define CMSPAR 010000000000 /* mark or space (stick) parity */
-#define CRTSCTS 020000000000 /* flow control */
-
-#define IBSHIFT 16 /* Shift from CBAUD to CIBAUD */
-
-/* c_lflag bits */
-#define ISIG 0000001
-#define ICANON 0000002
-#define XCASE 0000004
-#define ECHO 0000010
-#define ECHOE 0000020
-#define ECHOK 0000040
-#define ECHONL 0000100
-#define NOFLSH 0000200
-#define TOSTOP 0000400
-#define ECHOCTL 0001000
-#define ECHOPRT 0002000
-#define ECHOKE 0004000
-#define FLUSHO 0010000
-#define PENDIN 0040000
-#define IEXTEN 0100000
-#define EXTPROC 0200000
-
-
-/* tcflow() and TCXONC use these */
-#define TCOOFF 0
-#define TCOON 1
-#define TCIOFF 2
-#define TCION 3
-
-/* tcflush() and TCFLSH use these */
-#define TCIFLUSH 0
-#define TCOFLUSH 1
-#define TCIOFLUSH 2
-
-/* tcsetattr uses these */
-#define TCSANOW 0
-#define TCSADRAIN 1
-#define TCSAFLUSH 2
-
-#endif /* _ASM_TERMBITS_H__ */
-
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _UAPI_ASM_TERMIOS_H
-#define _UAPI_ASM_TERMIOS_H
-
-#include <asm/termbits.h>
-#include <asm/ioctls.h>
-
-struct winsize {
- unsigned short ws_row;
- unsigned short ws_col;
- unsigned short ws_xpixel;
- unsigned short ws_ypixel;
-};
-
-#define NCC 8
-struct termio {
- unsigned short c_iflag; /* input mode flags */
- unsigned short c_oflag; /* output mode flags */
- unsigned short c_cflag; /* control mode flags */
- unsigned short c_lflag; /* local mode flags */
- unsigned char c_line; /* line discipline */
- unsigned char c_cc[NCC]; /* control characters */
-};
-
-
-/* modem lines */
-#define TIOCM_LE 0x001
-#define TIOCM_DTR 0x002
-#define TIOCM_RTS 0x004
-#define TIOCM_ST 0x008
-#define TIOCM_SR 0x010
-#define TIOCM_CTS 0x020
-#define TIOCM_CAR 0x040
-#define TIOCM_RNG 0x080
-#define TIOCM_DSR 0x100
-#define TIOCM_CD TIOCM_CAR
-#define TIOCM_RI TIOCM_RNG
-#define TIOCM_OUT1 0x2000
-#define TIOCM_OUT2 0x4000
-#define TIOCM_LOOP 0x8000
-
-#define TIOCM_MODEM_BITS TIOCM_OUT2 /* IRDA support */
-
-/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
-
-
-#endif /* _UAPI_ASM_TERMIOS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
-/* types.h: FRV types
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <asm-generic/int-ll64.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _UAPI_ASM_UNISTD_H_
-#define _UAPI_ASM_UNISTD_H_
-
-/*
- * This file contains the system call numbers.
- */
-
-#define __NR_restart_syscall 0
-#define __NR_exit 1
-#define __NR_fork 2
-#define __NR_read 3
-#define __NR_write 4
-#define __NR_open 5
-#define __NR_close 6
-#define __NR_waitpid 7
-#define __NR_creat 8
-#define __NR_link 9
-#define __NR_unlink 10
-#define __NR_execve 11
-#define __NR_chdir 12
-#define __NR_time 13
-#define __NR_mknod 14
-#define __NR_chmod 15
-#define __NR_lchown 16
-#define __NR_break 17
-#define __NR_oldstat 18
-#define __NR_lseek 19
-#define __NR_getpid 20
-#define __NR_mount 21
-#define __NR_umount 22
-#define __NR_setuid 23
-#define __NR_getuid 24
-#define __NR_stime 25
-#define __NR_ptrace 26
-#define __NR_alarm 27
-#define __NR_oldfstat 28
-#define __NR_pause 29
-#define __NR_utime 30
-#define __NR_stty 31
-#define __NR_gtty 32
-#define __NR_access 33
-#define __NR_nice 34
-#define __NR_ftime 35
-#define __NR_sync 36
-#define __NR_kill 37
-#define __NR_rename 38
-#define __NR_mkdir 39
-#define __NR_rmdir 40
-#define __NR_dup 41
-#define __NR_pipe 42
-#define __NR_times 43
-#define __NR_prof 44
-#define __NR_brk 45
-#define __NR_setgid 46
-#define __NR_getgid 47
-#define __NR_signal 48
-#define __NR_geteuid 49
-#define __NR_getegid 50
-#define __NR_acct 51
-#define __NR_umount2 52
-#define __NR_lock 53
-#define __NR_ioctl 54
-#define __NR_fcntl 55
-#define __NR_mpx 56
-#define __NR_setpgid 57
-#define __NR_ulimit 58
-// #define __NR_oldolduname /* 59 */ obsolete
-#define __NR_umask 60
-#define __NR_chroot 61
-#define __NR_ustat 62
-#define __NR_dup2 63
-#define __NR_getppid 64
-#define __NR_getpgrp 65
-#define __NR_setsid 66
-#define __NR_sigaction 67
-#define __NR_sgetmask 68
-#define __NR_ssetmask 69
-#define __NR_setreuid 70
-#define __NR_setregid 71
-#define __NR_sigsuspend 72
-#define __NR_sigpending 73
-#define __NR_sethostname 74
-#define __NR_setrlimit 75
-#define __NR_getrlimit 76 /* Back compatible 2Gig limited rlimit */
-#define __NR_getrusage 77
-#define __NR_gettimeofday 78
-#define __NR_settimeofday 79
-#define __NR_getgroups 80
-#define __NR_setgroups 81
-#define __NR_select 82
-#define __NR_symlink 83
-#define __NR_oldlstat 84
-#define __NR_readlink 85
-#define __NR_uselib 86
-#define __NR_swapon 87
-#define __NR_reboot 88
-#define __NR_readdir 89
-// #define __NR_mmap 90 /* obsolete - not implemented */
-#define __NR_munmap 91
-#define __NR_truncate 92
-#define __NR_ftruncate 93
-#define __NR_fchmod 94
-#define __NR_fchown 95
-#define __NR_getpriority 96
-#define __NR_setpriority 97
-// #define __NR_profil /* 98 */ obsolete
-#define __NR_statfs 99
-#define __NR_fstatfs 100
-// #define __NR_ioperm /* 101 */ not supported
-#define __NR_socketcall 102
-#define __NR_syslog 103
-#define __NR_setitimer 104
-#define __NR_getitimer 105
-#define __NR_stat 106
-#define __NR_lstat 107
-#define __NR_fstat 108
-// #define __NR_olduname /* 109 */ obsolete
-// #define __NR_iopl /* 110 */ not supported
-#define __NR_vhangup 111
-// #define __NR_idle /* 112 */ Obsolete
-// #define __NR_vm86old /* 113 */ not supported
-#define __NR_wait4 114
-#define __NR_swapoff 115
-#define __NR_sysinfo 116
-#define __NR_ipc 117
-#define __NR_fsync 118
-#define __NR_sigreturn 119
-#define __NR_clone 120
-#define __NR_setdomainname 121
-#define __NR_uname 122
-// #define __NR_modify_ldt /* 123 */ not supported
-#define __NR_cacheflush 123
-#define __NR_adjtimex 124
-#define __NR_mprotect 125
-#define __NR_sigprocmask 126
-#define __NR_create_module 127
-#define __NR_init_module 128
-#define __NR_delete_module 129
-#define __NR_get_kernel_syms 130
-#define __NR_quotactl 131
-#define __NR_getpgid 132
-#define __NR_fchdir 133
-#define __NR_bdflush 134
-#define __NR_sysfs 135
-#define __NR_personality 136
-#define __NR_afs_syscall 137 /* Syscall for Andrew File System */
-#define __NR_setfsuid 138
-#define __NR_setfsgid 139
-#define __NR__llseek 140
-#define __NR_getdents 141
-#define __NR__newselect 142
-#define __NR_flock 143
-#define __NR_msync 144
-#define __NR_readv 145
-#define __NR_writev 146
-#define __NR_getsid 147
-#define __NR_fdatasync 148
-#define __NR__sysctl 149
-#define __NR_mlock 150
-#define __NR_munlock 151
-#define __NR_mlockall 152
-#define __NR_munlockall 153
-#define __NR_sched_setparam 154
-#define __NR_sched_getparam 155
-#define __NR_sched_setscheduler 156
-#define __NR_sched_getscheduler 157
-#define __NR_sched_yield 158
-#define __NR_sched_get_priority_max 159
-#define __NR_sched_get_priority_min 160
-#define __NR_sched_rr_get_interval 161
-#define __NR_nanosleep 162
-#define __NR_mremap 163
-#define __NR_setresuid 164
-#define __NR_getresuid 165
-// #define __NR_vm86 /* 166 */ not supported
-#define __NR_query_module 167
-#define __NR_poll 168
-#define __NR_nfsservctl 169
-#define __NR_setresgid 170
-#define __NR_getresgid 171
-#define __NR_prctl 172
-#define __NR_rt_sigreturn 173
-#define __NR_rt_sigaction 174
-#define __NR_rt_sigprocmask 175
-#define __NR_rt_sigpending 176
-#define __NR_rt_sigtimedwait 177
-#define __NR_rt_sigqueueinfo 178
-#define __NR_rt_sigsuspend 179
-#define __NR_pread64 180
-#define __NR_pwrite64 181
-#define __NR_chown 182
-#define __NR_getcwd 183
-#define __NR_capget 184
-#define __NR_capset 185
-#define __NR_sigaltstack 186
-#define __NR_sendfile 187
-#define __NR_getpmsg 188 /* some people actually want streams */
-#define __NR_putpmsg 189 /* some people actually want streams */
-#define __NR_vfork 190
-#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */
-#define __NR_mmap2 192
-#define __NR_truncate64 193
-#define __NR_ftruncate64 194
-#define __NR_stat64 195
-#define __NR_lstat64 196
-#define __NR_fstat64 197
-#define __NR_lchown32 198
-#define __NR_getuid32 199
-#define __NR_getgid32 200
-#define __NR_geteuid32 201
-#define __NR_getegid32 202
-#define __NR_setreuid32 203
-#define __NR_setregid32 204
-#define __NR_getgroups32 205
-#define __NR_setgroups32 206
-#define __NR_fchown32 207
-#define __NR_setresuid32 208
-#define __NR_getresuid32 209
-#define __NR_setresgid32 210
-#define __NR_getresgid32 211
-#define __NR_chown32 212
-#define __NR_setuid32 213
-#define __NR_setgid32 214
-#define __NR_setfsuid32 215
-#define __NR_setfsgid32 216
-#define __NR_pivot_root 217
-#define __NR_mincore 218
-#define __NR_madvise 219
-
-#define __NR_getdents64 220
-#define __NR_fcntl64 221
-#define __NR_security 223 /* syscall for security modules */
-#define __NR_gettid 224
-#define __NR_readahead 225
-#define __NR_setxattr 226
-#define __NR_lsetxattr 227
-#define __NR_fsetxattr 228
-#define __NR_getxattr 229
-#define __NR_lgetxattr 230
-#define __NR_fgetxattr 231
-#define __NR_listxattr 232
-#define __NR_llistxattr 233
-#define __NR_flistxattr 234
-#define __NR_removexattr 235
-#define __NR_lremovexattr 236
-#define __NR_fremovexattr 237
-#define __NR_tkill 238
-#define __NR_sendfile64 239
-#define __NR_futex 240
-#define __NR_sched_setaffinity 241
-#define __NR_sched_getaffinity 242
-#define __NR_set_thread_area 243
-#define __NR_get_thread_area 244
-#define __NR_io_setup 245
-#define __NR_io_destroy 246
-#define __NR_io_getevents 247
-#define __NR_io_submit 248
-#define __NR_io_cancel 249
-#define __NR_fadvise64 250
-
-#define __NR_exit_group 252
-#define __NR_lookup_dcookie 253
-#define __NR_epoll_create 254
-#define __NR_epoll_ctl 255
-#define __NR_epoll_wait 256
-#define __NR_remap_file_pages 257
-#define __NR_set_tid_address 258
-#define __NR_timer_create 259
-#define __NR_timer_settime (__NR_timer_create+1)
-#define __NR_timer_gettime (__NR_timer_create+2)
-#define __NR_timer_getoverrun (__NR_timer_create+3)
-#define __NR_timer_delete (__NR_timer_create+4)
-#define __NR_clock_settime (__NR_timer_create+5)
-#define __NR_clock_gettime (__NR_timer_create+6)
-#define __NR_clock_getres (__NR_timer_create+7)
-#define __NR_clock_nanosleep (__NR_timer_create+8)
-#define __NR_statfs64 268
-#define __NR_fstatfs64 269
-#define __NR_tgkill 270
-#define __NR_utimes 271
-#define __NR_fadvise64_64 272
-#define __NR_vserver 273
-#define __NR_mbind 274
-#define __NR_get_mempolicy 275
-#define __NR_set_mempolicy 276
-#define __NR_mq_open 277
-#define __NR_mq_unlink (__NR_mq_open+1)
-#define __NR_mq_timedsend (__NR_mq_open+2)
-#define __NR_mq_timedreceive (__NR_mq_open+3)
-#define __NR_mq_notify (__NR_mq_open+4)
-#define __NR_mq_getsetattr (__NR_mq_open+5)
-#define __NR_kexec_load 283
-#define __NR_waitid 284
-/* #define __NR_sys_setaltroot 285 */
-#define __NR_add_key 286
-#define __NR_request_key 287
-#define __NR_keyctl 288
-#define __NR_ioprio_set 289
-#define __NR_ioprio_get 290
-#define __NR_inotify_init 291
-#define __NR_inotify_add_watch 292
-#define __NR_inotify_rm_watch 293
-#define __NR_migrate_pages 294
-#define __NR_openat 295
-#define __NR_mkdirat 296
-#define __NR_mknodat 297
-#define __NR_fchownat 298
-#define __NR_futimesat 299
-#define __NR_fstatat64 300
-#define __NR_unlinkat 301
-#define __NR_renameat 302
-#define __NR_linkat 303
-#define __NR_symlinkat 304
-#define __NR_readlinkat 305
-#define __NR_fchmodat 306
-#define __NR_faccessat 307
-#define __NR_pselect6 308
-#define __NR_ppoll 309
-#define __NR_unshare 310
-#define __NR_set_robust_list 311
-#define __NR_get_robust_list 312
-#define __NR_splice 313
-#define __NR_sync_file_range 314
-#define __NR_tee 315
-#define __NR_vmsplice 316
-#define __NR_move_pages 317
-#define __NR_getcpu 318
-#define __NR_epoll_pwait 319
-#define __NR_utimensat 320
-#define __NR_signalfd 321
-#define __NR_timerfd_create 322
-#define __NR_eventfd 323
-#define __NR_fallocate 324
-#define __NR_timerfd_settime 325
-#define __NR_timerfd_gettime 326
-#define __NR_signalfd4 327
-#define __NR_eventfd2 328
-#define __NR_epoll_create1 329
-#define __NR_dup3 330
-#define __NR_pipe2 331
-#define __NR_inotify_init1 332
-#define __NR_preadv 333
-#define __NR_pwritev 334
-#define __NR_rt_tgsigqueueinfo 335
-#define __NR_perf_event_open 336
-#define __NR_setns 337
-
-#endif /* _UAPI_ASM_UNISTD_H_ */
+++ /dev/null
-vmlinux.lds
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the linux kernel.
-#
-
-heads-y := head-uc-fr401.o head-uc-fr451.o head-uc-fr555.o
-heads-$(CONFIG_MMU) := head-mmu-fr451.o
-
-extra-y:= head.o vmlinux.lds
-
-obj-y := $(heads-y) entry.o entry-table.o break.o switch_to.o \
- process.o traps.o ptrace.o signal.o dma.o \
- sys_frv.o time.o setup.o frv_ksyms.o \
- debug-stub.o irq.o sleep.o uaccess.o
-
-obj-$(CONFIG_GDBSTUB) += gdb-stub.o gdb-io.o
-
-obj-$(CONFIG_MB93091_VDK) += irq-mb93091.o
-obj-$(CONFIG_PM) += pm.o cmode.o
-obj-$(CONFIG_MB93093_PDK) += pm-mb93093.o
-obj-$(CONFIG_FUJITSU_MB93493) += irq-mb93493.o
-obj-$(CONFIG_SYSCTL) += sysctl.o
-obj-$(CONFIG_FUTEX) += futex.o
-obj-$(CONFIG_MODULES) += module.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Generate definitions needed by assembly language modules.
- * This code generates raw asm output which is post-processed
- * to extract and format the required data.
- */
-
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/personality.h>
-#include <linux/kbuild.h>
-#include <asm/registers.h>
-#include <asm/ucontext.h>
-#include <asm/processor.h>
-#include <asm/thread_info.h>
-#include <asm/gdb-stub.h>
-
-#define DEF_PTREG(sym, reg) OFFSET(sym, pt_regs, reg)
-#define DEF_IREG(sym, reg) OFFSET(sym, user_context, reg)
-#define DEF_FREG(sym, reg) OFFSET(sym, user_context, reg)
-#define DEF_0REG(sym, reg) OFFSET(sym, frv_frame0, reg)
-
-void foo(void)
-{
- /* offsets into the thread_info structure */
- OFFSET(TI_TASK, thread_info, task);
- OFFSET(TI_FLAGS, thread_info, flags);
- OFFSET(TI_STATUS, thread_info, status);
- OFFSET(TI_CPU, thread_info, cpu);
- OFFSET(TI_PREEMPT_COUNT, thread_info, preempt_count);
- OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
- BLANK();
-
- /* offsets into register file storage */
- DEF_PTREG(REG_PSR, psr);
- DEF_PTREG(REG_ISR, isr);
- DEF_PTREG(REG_CCR, ccr);
- DEF_PTREG(REG_CCCR, cccr);
- DEF_PTREG(REG_LR, lr);
- DEF_PTREG(REG_LCR, lcr);
- DEF_PTREG(REG_PC, pc);
- DEF_PTREG(REG__STATUS, __status);
- DEF_PTREG(REG_SYSCALLNO, syscallno);
- DEF_PTREG(REG_ORIG_GR8, orig_gr8);
- DEF_PTREG(REG_GNER0, gner0);
- DEF_PTREG(REG_GNER1, gner1);
- DEF_PTREG(REG_IACC0, iacc0);
- DEF_PTREG(REG_TBR, tbr);
- DEF_PTREG(REG_GR0, tbr);
- DEFINE(REG__END, sizeof(struct pt_regs));
- BLANK();
-
- DEF_0REG(REG_DCR, debug.dcr);
- DEF_0REG(REG_IBAR0, debug.ibar[0]);
- DEF_0REG(REG_DBAR0, debug.dbar[0]);
- DEF_0REG(REG_DBDR00, debug.dbdr[0][0]);
- DEF_0REG(REG_DBMR00, debug.dbmr[0][0]);
- BLANK();
-
- DEF_IREG(__INT_GR0, i.gr[0]);
- DEF_FREG(__USER_FPMEDIA, f);
- DEF_FREG(__FPMEDIA_FR0, f.fr[0]);
- DEF_FREG(__FPMEDIA_FNER0, f.fner[0]);
- DEF_FREG(__FPMEDIA_MSR0, f.msr[0]);
- DEF_FREG(__FPMEDIA_ACC0, f.acc[0]);
- DEF_FREG(__FPMEDIA_ACCG0, f.accg[0]);
- DEF_FREG(__FPMEDIA_FSR0, f.fsr[0]);
- BLANK();
-
- DEFINE(NR_PT_REGS, sizeof(struct pt_regs) / 4);
- DEFINE(NR_USER_INT_REGS, sizeof(struct user_int_regs) / 4);
- DEFINE(NR_USER_FPMEDIA_REGS, sizeof(struct user_fpmedia_regs) / 4);
- DEFINE(NR_USER_CONTEXT, sizeof(struct user_context) / 4);
- DEFINE(FRV_FRAME0_SIZE, sizeof(struct frv_frame0));
- BLANK();
-
- /* offsets into thread_struct */
- OFFSET(__THREAD_FRAME, thread_struct, frame);
- OFFSET(__THREAD_CURR, thread_struct, curr);
- OFFSET(__THREAD_SP, thread_struct, sp);
- OFFSET(__THREAD_FP, thread_struct, fp);
- OFFSET(__THREAD_LR, thread_struct, lr);
- OFFSET(__THREAD_PC, thread_struct, pc);
- OFFSET(__THREAD_GR16, thread_struct, gr[0]);
- OFFSET(__THREAD_SCHED_LR, thread_struct, sched_lr);
- OFFSET(__THREAD_FRAME0, thread_struct, frame0);
- OFFSET(__THREAD_USER, thread_struct, user);
- BLANK();
-
- /* offsets into frv_debug_status */
- OFFSET(DEBUG_BPSR, frv_debug_status, bpsr);
- OFFSET(DEBUG_DCR, frv_debug_status, dcr);
- OFFSET(DEBUG_BRR, frv_debug_status, brr);
- OFFSET(DEBUG_NMAR, frv_debug_status, nmar);
- BLANK();
-}
+++ /dev/null
-/* break.S: Break interrupt handling (kept separate from entry.S)
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/linkage.h>
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/ptrace.h>
-#include <asm/thread_info.h>
-#include <asm/spr-regs.h>
-
-#include <asm/errno.h>
-
-#
-# the break handler has its own stack
-#
- .section .bss..stack
- .globl __break_user_context
- .balign THREAD_SIZE
-__break_stack:
- .space THREAD_SIZE - FRV_FRAME0_SIZE
-__break_frame_0:
- .space FRV_FRAME0_SIZE
-
-#
-# miscellaneous variables
-#
- .section .bss
-#ifdef CONFIG_MMU
- .globl __break_tlb_miss_real_return_info
-__break_tlb_miss_real_return_info:
- .balign 8
- .space 2*4 /* saved PCSR, PSR for TLB-miss handler fixup */
-#endif
-
-__break_trace_through_exceptions:
- .space 4
-
-#define CS2_ECS1 0xe1200000
-#define CS2_USERLED 0x4
-
-.macro LEDS val,reg
-# sethi.p %hi(CS2_ECS1+CS2_USERLED),gr30
-# setlo %lo(CS2_ECS1+CS2_USERLED),gr30
-# setlos #~\val,\reg
-# st \reg,@(gr30,gr0)
-# setlos #0x5555,\reg
-# sethi.p %hi(0xffc00100),gr30
-# setlo %lo(0xffc00100),gr30
-# sth \reg,@(gr30,gr0)
-# membar
-.endm
-
-###############################################################################
-#
-# entry point for Break Exceptions/Interrupts
-#
-###############################################################################
- .section .text..break
- .balign 4
- .globl __entry_break
-__entry_break:
-#ifdef CONFIG_MMU
- movgs gr31,scr3
-#endif
- LEDS 0x1001,gr31
-
- sethi.p %hi(__break_frame_0),gr31
- setlo %lo(__break_frame_0),gr31
-
- stdi gr2,@(gr31,#REG_GR(2))
- movsg ccr,gr3
- sti gr3,@(gr31,#REG_CCR)
-
- # catch the return from a TLB-miss handler that had single-step disabled
- # traps will be enabled, so we have to do this now
-#ifdef CONFIG_MMU
- movsg bpcsr,gr3
- sethi.p %hi(__break_tlb_miss_return_breaks_here),gr2
- setlo %lo(__break_tlb_miss_return_breaks_here),gr2
- subcc gr2,gr3,gr0,icc0
- beq icc0,#2,__break_return_singlestep_tlbmiss
-#endif
-
- # determine whether we have stepped through into an exception
- # - we need to take special action to suspend h/w single stepping if we've done
- # that, so that the gdbstub doesn't get bogged down endlessly stepping through
- # external interrupt handling
- movsg bpsr,gr3
- andicc gr3,#BPSR_BET,gr0,icc0
- bne icc0,#2,__break_maybe_userspace /* jump if PSR.ET was 1 */
-
- LEDS 0x1003,gr2
-
- movsg brr,gr3
- andicc gr3,#BRR_ST,gr0,icc0
- andicc.p gr3,#BRR_SB,gr0,icc1
- bne icc0,#2,__break_step /* jump if single-step caused break */
- beq icc1,#2,__break_continue /* jump if BREAK didn't cause break */
-
- LEDS 0x1007,gr2
-
- # handle special breaks
- movsg bpcsr,gr3
-
- sethi.p %hi(__entry_return_singlestep_breaks_here),gr2
- setlo %lo(__entry_return_singlestep_breaks_here),gr2
- subcc gr2,gr3,gr0,icc0
- beq icc0,#2,__break_return_singlestep
-
- bra __break_continue
-
-
-###############################################################################
-#
-# handle BREAK instruction in kernel-mode exception epilogue
-#
-###############################################################################
-__break_return_singlestep:
- LEDS 0x100f,gr2
-
- # special break insn requests single-stepping to be turned back on
- # HERE RETT
- # PSR.ET 0 0
- # PSR.PS old PSR.S ?
- # PSR.S 1 1
- # BPSR.ET 0 1 (can't have caused orig excep otherwise)
- # BPSR.BS 1 old PSR.S
- movsg dcr,gr2
- sethi.p %hi(DCR_SE),gr3
- setlo %lo(DCR_SE),gr3
- or gr2,gr3,gr2
- movgs gr2,dcr
-
- movsg psr,gr2
- andi gr2,#PSR_PS,gr2
- slli gr2,#11,gr2 /* PSR.PS -> BPSR.BS */
- ori gr2,#BPSR_BET,gr2 /* 1 -> BPSR.BET */
- movgs gr2,bpsr
-
- # return to the invoker of the original kernel exception
- movsg pcsr,gr2
- movgs gr2,bpcsr
-
- LEDS 0x101f,gr2
-
- ldi @(gr31,#REG_CCR),gr3
- movgs gr3,ccr
- lddi.p @(gr31,#REG_GR(2)),gr2
- xor gr31,gr31,gr31
- movgs gr0,brr
-#ifdef CONFIG_MMU
- movsg scr3,gr31
-#endif
- rett #1
-
-###############################################################################
-#
-# handle BREAK instruction in TLB-miss handler return path
-#
-###############################################################################
-#ifdef CONFIG_MMU
-__break_return_singlestep_tlbmiss:
- LEDS 0x1100,gr2
-
- sethi.p %hi(__break_tlb_miss_real_return_info),gr3
- setlo %lo(__break_tlb_miss_real_return_info),gr3
- lddi @(gr3,#0),gr2
- movgs gr2,pcsr
- movgs gr3,psr
-
- bra __break_return_singlestep
-#endif
-
-
-###############################################################################
-#
-# handle single stepping into an exception prologue from kernel mode
-# - we try and catch it whilst it is still in the main vector table
-# - if we catch it there, we have to jump to the fixup handler
-# - there is a fixup table that has a pointer for every 16b slot in the trap
-# table
-#
-###############################################################################
-__break_step:
- LEDS 0x2003,gr2
-
- # external interrupts seem to escape from the trap table before single
- # step catches up with them
- movsg bpcsr,gr2
- sethi.p %hi(__entry_kernel_external_interrupt),gr3
- setlo %lo(__entry_kernel_external_interrupt),gr3
- subcc.p gr2,gr3,gr0,icc0
- sethi %hi(__entry_uspace_external_interrupt),gr3
- setlo.p %lo(__entry_uspace_external_interrupt),gr3
- beq icc0,#2,__break_step_kernel_external_interrupt
- subcc.p gr2,gr3,gr0,icc0
- sethi %hi(__entry_kernel_external_interrupt_virtually_disabled),gr3
- setlo.p %lo(__entry_kernel_external_interrupt_virtually_disabled),gr3
- beq icc0,#2,__break_step_uspace_external_interrupt
- subcc.p gr2,gr3,gr0,icc0
- sethi %hi(__entry_kernel_external_interrupt_virtual_reenable),gr3
- setlo.p %lo(__entry_kernel_external_interrupt_virtual_reenable),gr3
- beq icc0,#2,__break_step_kernel_external_interrupt_virtually_disabled
- subcc gr2,gr3,gr0,icc0
- beq icc0,#2,__break_step_kernel_external_interrupt_virtual_reenable
-
- LEDS 0x2007,gr2
-
- # the two main vector tables are adjacent on one 8Kb slab
- movsg bpcsr,gr2
- setlos #0xffffe000,gr3
- and gr2,gr3,gr2
- sethi.p %hi(__trap_tables),gr3
- setlo %lo(__trap_tables),gr3
- subcc gr2,gr3,gr0,icc0
- bne icc0,#2,__break_continue
-
- LEDS 0x200f,gr2
-
- # skip workaround if so requested by GDB
- sethi.p %hi(__break_trace_through_exceptions),gr3
- setlo %lo(__break_trace_through_exceptions),gr3
- ld @(gr3,gr0),gr3
- subcc gr3,gr0,gr0,icc0
- bne icc0,#0,__break_continue
-
- LEDS 0x201f,gr2
-
- # access the fixup table - there's a 1:1 mapping between the slots in the trap tables and
- # the slots in the trap fixup tables allowing us to simply divide the offset into the
- # former by 4 to access the latter
- sethi.p %hi(__trap_tables),gr3
- setlo %lo(__trap_tables),gr3
- movsg bpcsr,gr2
- sub gr2,gr3,gr2
- srli.p gr2,#2,gr2
-
- sethi %hi(__trap_fixup_tables),gr3
- setlo.p %lo(__trap_fixup_tables),gr3
- andi gr2,#~3,gr2
- ld @(gr2,gr3),gr2
- jmpil @(gr2,#0)
-
-# step through an internal exception from kernel mode
- .globl __break_step_kernel_softprog_interrupt
-__break_step_kernel_softprog_interrupt:
- sethi.p %hi(__entry_kernel_softprog_interrupt_reentry),gr3
- setlo %lo(__entry_kernel_softprog_interrupt_reentry),gr3
- bra __break_return_as_kernel_prologue
-
-# step through an external interrupt from kernel mode
- .globl __break_step_kernel_external_interrupt
-__break_step_kernel_external_interrupt:
- # deal with virtual interrupt disablement
- beq icc2,#0,__break_step_kernel_external_interrupt_virtually_disabled
-
- sethi.p %hi(__entry_kernel_external_interrupt_reentry),gr3
- setlo %lo(__entry_kernel_external_interrupt_reentry),gr3
-
-__break_return_as_kernel_prologue:
- LEDS 0x203f,gr2
-
- movgs gr3,bpcsr
-
- # do the bit we had to skip
-#ifdef CONFIG_MMU
- movsg ear0,gr2 /* EAR0 can get clobbered by gdb-stub (ICI/ICEI) */
- movgs gr2,scr2
-#endif
-
- or.p sp,gr0,gr2 /* set up the stack pointer */
- subi sp,#REG__END,sp
- sti.p gr2,@(sp,#REG_SP)
-
- setlos #REG__STATUS_STEP,gr2
- sti gr2,@(sp,#REG__STATUS) /* record single step status */
-
- # cancel single-stepping mode
- movsg dcr,gr2
- sethi.p %hi(~DCR_SE),gr3
- setlo %lo(~DCR_SE),gr3
- and gr2,gr3,gr2
- movgs gr2,dcr
-
- LEDS 0x207f,gr2
-
- ldi @(gr31,#REG_CCR),gr3
- movgs gr3,ccr
- lddi.p @(gr31,#REG_GR(2)),gr2
- xor gr31,gr31,gr31
- movgs gr0,brr
-#ifdef CONFIG_MMU
- movsg scr3,gr31
-#endif
- rett #1
-
-# we single-stepped into an interrupt handler whilst interrupts were merely virtually disabled
-# need to really disable interrupts, set flag, fix up and return
-__break_step_kernel_external_interrupt_virtually_disabled:
- movsg psr,gr2
- andi gr2,#~PSR_PIL,gr2
- ori gr2,#PSR_PIL_14,gr2 /* debugging interrupts only */
- movgs gr2,psr
-
- ldi @(gr31,#REG_CCR),gr3
- movgs gr3,ccr
- subcc.p gr0,gr0,gr0,icc2 /* leave Z set, clear C */
-
- # exceptions must've been enabled and we must've been in supervisor mode
- setlos BPSR_BET|BPSR_BS,gr3
- movgs gr3,bpsr
-
- # return to where the interrupt happened
- movsg pcsr,gr2
- movgs gr2,bpcsr
-
- lddi.p @(gr31,#REG_GR(2)),gr2
-
- xor gr31,gr31,gr31
- movgs gr0,brr
-#ifdef CONFIG_MMU
- movsg scr3,gr31
-#endif
- rett #1
-
-# we stepped through into the virtual interrupt reenablement trap
-#
-# we also want to single step anyway, but after fixing up so that we get an event on the
-# instruction after the broken-into exception returns
- .globl __break_step_kernel_external_interrupt_virtual_reenable
-__break_step_kernel_external_interrupt_virtual_reenable:
- movsg psr,gr2
- andi gr2,#~PSR_PIL,gr2
- movgs gr2,psr
-
- ldi @(gr31,#REG_CCR),gr3
- movgs gr3,ccr
- subicc gr0,#1,gr0,icc2 /* clear Z, set C */
-
- # save the adjusted ICC2
- movsg ccr,gr3
- sti gr3,@(gr31,#REG_CCR)
-
- # exceptions must've been enabled and we must've been in supervisor mode
- setlos BPSR_BET|BPSR_BS,gr3
- movgs gr3,bpsr
-
- # return to where the trap happened
- movsg pcsr,gr2
- movgs gr2,bpcsr
-
- # and then process the single step
- bra __break_continue
-
-# step through an internal exception from uspace mode
- .globl __break_step_uspace_softprog_interrupt
-__break_step_uspace_softprog_interrupt:
- sethi.p %hi(__entry_uspace_softprog_interrupt_reentry),gr3
- setlo %lo(__entry_uspace_softprog_interrupt_reentry),gr3
- bra __break_return_as_uspace_prologue
-
-# step through an external interrupt from kernel mode
- .globl __break_step_uspace_external_interrupt
-__break_step_uspace_external_interrupt:
- sethi.p %hi(__entry_uspace_external_interrupt_reentry),gr3
- setlo %lo(__entry_uspace_external_interrupt_reentry),gr3
-
-__break_return_as_uspace_prologue:
- LEDS 0x20ff,gr2
-
- movgs gr3,bpcsr
-
- # do the bit we had to skip
- sethi.p %hi(__kernel_frame0_ptr),gr28
- setlo %lo(__kernel_frame0_ptr),gr28
- ldi.p @(gr28,#0),gr28
-
- setlos #REG__STATUS_STEP,gr2
- sti gr2,@(gr28,#REG__STATUS) /* record single step status */
-
- # cancel single-stepping mode
- movsg dcr,gr2
- sethi.p %hi(~DCR_SE),gr3
- setlo %lo(~DCR_SE),gr3
- and gr2,gr3,gr2
- movgs gr2,dcr
-
- LEDS 0x20fe,gr2
-
- ldi @(gr31,#REG_CCR),gr3
- movgs gr3,ccr
- lddi.p @(gr31,#REG_GR(2)),gr2
- xor gr31,gr31,gr31
- movgs gr0,brr
-#ifdef CONFIG_MMU
- movsg scr3,gr31
-#endif
- rett #1
-
-#ifdef CONFIG_MMU
-# step through an ITLB-miss handler from user mode
- .globl __break_user_insn_tlb_miss
-__break_user_insn_tlb_miss:
- # we'll want to try the trap stub again
- sethi.p %hi(__trap_user_insn_tlb_miss),gr2
- setlo %lo(__trap_user_insn_tlb_miss),gr2
- movgs gr2,bpcsr
-
-__break_tlb_miss_common:
- LEDS 0x2101,gr2
-
- # cancel single-stepping mode
- movsg dcr,gr2
- sethi.p %hi(~DCR_SE),gr3
- setlo %lo(~DCR_SE),gr3
- and gr2,gr3,gr2
- movgs gr2,dcr
-
- # we'll swap the real return address for one with a BREAK insn so that we can re-enable
- # single stepping on return
- movsg pcsr,gr2
- sethi.p %hi(__break_tlb_miss_real_return_info),gr3
- setlo %lo(__break_tlb_miss_real_return_info),gr3
- sti gr2,@(gr3,#0)
-
- sethi.p %hi(__break_tlb_miss_return_break),gr2
- setlo %lo(__break_tlb_miss_return_break),gr2
- movgs gr2,pcsr
-
- # we also have to fudge PSR because the return BREAK is in kernel space and we want
- # to get a BREAK fault not an access violation should the return be to userspace
- movsg psr,gr2
- sti.p gr2,@(gr3,#4)
- ori gr2,#PSR_PS,gr2
- movgs gr2,psr
-
- LEDS 0x2102,gr2
-
- ldi @(gr31,#REG_CCR),gr3
- movgs gr3,ccr
- lddi @(gr31,#REG_GR(2)),gr2
- movsg scr3,gr31
- movgs gr0,brr
- rett #1
-
-# step through a DTLB-miss handler from user mode
- .globl __break_user_data_tlb_miss
-__break_user_data_tlb_miss:
- # we'll want to try the trap stub again
- sethi.p %hi(__trap_user_data_tlb_miss),gr2
- setlo %lo(__trap_user_data_tlb_miss),gr2
- movgs gr2,bpcsr
- bra __break_tlb_miss_common
-
-# step through an ITLB-miss handler from kernel mode
- .globl __break_kernel_insn_tlb_miss
-__break_kernel_insn_tlb_miss:
- # we'll want to try the trap stub again
- sethi.p %hi(__trap_kernel_insn_tlb_miss),gr2
- setlo %lo(__trap_kernel_insn_tlb_miss),gr2
- movgs gr2,bpcsr
- bra __break_tlb_miss_common
-
-# step through a DTLB-miss handler from kernel mode
- .globl __break_kernel_data_tlb_miss
-__break_kernel_data_tlb_miss:
- # we'll want to try the trap stub again
- sethi.p %hi(__trap_kernel_data_tlb_miss),gr2
- setlo %lo(__trap_kernel_data_tlb_miss),gr2
- movgs gr2,bpcsr
- bra __break_tlb_miss_common
-#endif
-
-###############################################################################
-#
-# handle debug events originating with userspace
-#
-###############################################################################
-__break_maybe_userspace:
- LEDS 0x3003,gr2
-
- setlos #BPSR_BS,gr2
- andcc gr3,gr2,gr0,icc0
- bne icc0,#0,__break_continue /* skip if PSR.S was 1 */
-
- movsg brr,gr2
- andicc gr2,#BRR_ST|BRR_SB,gr0,icc0
- beq icc0,#0,__break_continue /* jump if not BREAK or single-step */
-
- LEDS 0x3007,gr2
-
- # do the first part of the exception prologue here
- sethi.p %hi(__kernel_frame0_ptr),gr28
- setlo %lo(__kernel_frame0_ptr),gr28
- ldi @(gr28,#0),gr28
- andi gr28,#~7,gr28
-
- # set up the kernel stack pointer
- sti sp ,@(gr28,#REG_SP)
- ori gr28,0,sp
- sti gr0 ,@(gr28,#REG_GR(28))
-
- stdi gr20,@(gr28,#REG_GR(20))
- stdi gr22,@(gr28,#REG_GR(22))
-
- movsg tbr,gr20
- movsg bpcsr,gr21
- movsg psr,gr22
-
- # determine the exception type and cancel single-stepping mode
- or gr0,gr0,gr23
-
- movsg dcr,gr2
- sethi.p %hi(DCR_SE),gr3
- setlo %lo(DCR_SE),gr3
- andcc gr2,gr3,gr0,icc0
- beq icc0,#0,__break_no_user_sstep /* must have been a BREAK insn */
-
- not gr3,gr3
- and gr2,gr3,gr2
- movgs gr2,dcr
- ori gr23,#REG__STATUS_STEP,gr23
-
-__break_no_user_sstep:
- LEDS 0x300f,gr2
-
- movsg brr,gr2
- andi gr2,#BRR_ST|BRR_SB,gr2
- slli gr2,#1,gr2
- or gr23,gr2,gr23
- sti.p gr23,@(gr28,#REG__STATUS) /* record single step status */
-
- # adjust the value acquired from TBR - this indicates the exception
- setlos #~TBR_TT,gr2
- and.p gr20,gr2,gr20
- setlos #TBR_TT_BREAK,gr2
- or.p gr20,gr2,gr20
-
- # fudge PSR.PS and BPSR.BS to return to kernel mode through the trap
- # table as trap 126
- andi gr22,#~PSR_PS,gr22 /* PSR.PS should be 0 */
- movgs gr22,psr
-
- setlos #BPSR_BS,gr2 /* BPSR.BS should be 1 and BPSR.BET 0 */
- movgs gr2,bpsr
-
- # return through remainder of the exception prologue
- # - need to load gr23 with return handler address
- sethi.p %hi(__entry_return_from_user_exception),gr23
- setlo %lo(__entry_return_from_user_exception),gr23
- sethi.p %hi(__entry_common),gr3
- setlo %lo(__entry_common),gr3
- movgs gr3,bpcsr
-
- LEDS 0x301f,gr2
-
- ldi @(gr31,#REG_CCR),gr3
- movgs gr3,ccr
- lddi.p @(gr31,#REG_GR(2)),gr2
- xor gr31,gr31,gr31
- movgs gr0,brr
-#ifdef CONFIG_MMU
- movsg scr3,gr31
-#endif
- rett #1
-
-###############################################################################
-#
-# resume normal debug-mode entry
-#
-###############################################################################
-__break_continue:
- LEDS 0x4003,gr2
-
- # set up the kernel stack pointer
- sti sp,@(gr31,#REG_SP)
-
- sethi.p %hi(__break_frame_0),sp
- setlo %lo(__break_frame_0),sp
-
- # finish building the exception frame
- stdi gr4 ,@(gr31,#REG_GR(4))
- stdi gr6 ,@(gr31,#REG_GR(6))
- stdi gr8 ,@(gr31,#REG_GR(8))
- stdi gr10,@(gr31,#REG_GR(10))
- stdi gr12,@(gr31,#REG_GR(12))
- stdi gr14,@(gr31,#REG_GR(14))
- stdi gr16,@(gr31,#REG_GR(16))
- stdi gr18,@(gr31,#REG_GR(18))
- stdi gr20,@(gr31,#REG_GR(20))
- stdi gr22,@(gr31,#REG_GR(22))
- stdi gr24,@(gr31,#REG_GR(24))
- stdi gr26,@(gr31,#REG_GR(26))
- sti gr0 ,@(gr31,#REG_GR(28)) /* NULL frame pointer */
- sti gr29,@(gr31,#REG_GR(29))
- sti gr30,@(gr31,#REG_GR(30))
- sti gr8 ,@(gr31,#REG_ORIG_GR8)
-
-#ifdef CONFIG_MMU
- movsg scr3,gr19
- sti gr19,@(gr31,#REG_GR(31))
-#endif
-
- movsg bpsr ,gr19
- movsg tbr ,gr20
- movsg bpcsr,gr21
- movsg psr ,gr22
- movsg isr ,gr23
- movsg cccr ,gr25
- movsg lr ,gr26
- movsg lcr ,gr27
-
- andi.p gr22,#~(PSR_S|PSR_ET),gr5 /* rebuild PSR */
- andi gr19,#PSR_ET,gr4
- or.p gr4,gr5,gr5
- srli gr19,#10,gr4
- andi gr4,#PSR_S,gr4
- or.p gr4,gr5,gr5
-
- setlos #-1,gr6
- sti gr20,@(gr31,#REG_TBR)
- sti gr21,@(gr31,#REG_PC)
- sti gr5 ,@(gr31,#REG_PSR)
- sti gr23,@(gr31,#REG_ISR)
- sti gr25,@(gr31,#REG_CCCR)
- stdi gr26,@(gr31,#REG_LR)
- sti gr6 ,@(gr31,#REG_SYSCALLNO)
-
- # store CPU-specific regs
- movsg iacc0h,gr4
- movsg iacc0l,gr5
- stdi gr4,@(gr31,#REG_IACC0)
-
- movsg gner0,gr4
- movsg gner1,gr5
- stdi gr4,@(gr31,#REG_GNER0)
-
- # build the debug register frame
- movsg brr,gr4
- movgs gr0,brr
- movsg nmar,gr5
- movsg dcr,gr6
-
- sethi.p %hi(__debug_status),gr7
- setlo %lo(__debug_status),gr7
-
- stdi gr4 ,@(gr7,#DEBUG_BRR)
- sti gr19,@(gr7,#DEBUG_BPSR)
- sti.p gr6 ,@(gr7,#DEBUG_DCR)
-
- # trap exceptions during break handling and disable h/w breakpoints/watchpoints
- sethi %hi(DCR_EBE),gr5
- setlo.p %lo(DCR_EBE),gr5
- sethi %hi(__entry_breaktrap_table),gr4
- setlo %lo(__entry_breaktrap_table),gr4
- movgs gr5,dcr
- movgs gr4,tbr
-
- # set up kernel global registers
- sethi.p %hi(__kernel_current_task),gr5
- setlo %lo(__kernel_current_task),gr5
- ld @(gr5,gr0),gr29
- ldi.p @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
-
- sethi %hi(_gp),gr16
- setlo.p %lo(_gp),gr16
-
- # make sure we (the kernel) get div-zero and misalignment exceptions
- setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
- movgs gr5,isr
-
- # enter the GDB stub
- LEDS 0x4007,gr2
-
- or.p gr0,gr0,fp
- call debug_stub
-
- LEDS 0x403f,gr2
-
- # return from break
- lddi @(gr31,#REG_IACC0),gr4
- movgs gr4,iacc0h
- movgs gr5,iacc0l
-
- lddi @(gr31,#REG_GNER0),gr4
- movgs gr4,gner0
- movgs gr5,gner1
-
- lddi @(gr31,#REG_LR) ,gr26
- lddi @(gr31,#REG_CCR) ,gr24
- lddi @(gr31,#REG_PSR) ,gr22
- ldi @(gr31,#REG_PC) ,gr21
- ldi @(gr31,#REG_TBR) ,gr20
-
- sethi.p %hi(__debug_status),gr6
- setlo %lo(__debug_status),gr6
- ldi.p @(gr6,#DEBUG_DCR) ,gr6
-
- andi gr22,#PSR_S,gr19 /* rebuild BPSR */
- andi.p gr22,#PSR_ET,gr5
- slli gr19,#10,gr19
- or gr5,gr19,gr19
-
- movgs gr6 ,dcr
- movgs gr19,bpsr
- movgs gr20,tbr
- movgs gr21,bpcsr
- movgs gr23,isr
- movgs gr24,ccr
- movgs gr25,cccr
- movgs gr26,lr
- movgs gr27,lcr
-
- LEDS 0x407f,gr2
-
-#ifdef CONFIG_MMU
- ldi @(gr31,#REG_GR(31)),gr2
- movgs gr2,scr3
-#endif
-
- ldi @(gr31,#REG_GR(30)),gr30
- ldi @(gr31,#REG_GR(29)),gr29
- lddi @(gr31,#REG_GR(26)),gr26
- lddi @(gr31,#REG_GR(24)),gr24
- lddi @(gr31,#REG_GR(22)),gr22
- lddi @(gr31,#REG_GR(20)),gr20
- lddi @(gr31,#REG_GR(18)),gr18
- lddi @(gr31,#REG_GR(16)),gr16
- lddi @(gr31,#REG_GR(14)),gr14
- lddi @(gr31,#REG_GR(12)),gr12
- lddi @(gr31,#REG_GR(10)),gr10
- lddi @(gr31,#REG_GR(8)) ,gr8
- lddi @(gr31,#REG_GR(6)) ,gr6
- lddi @(gr31,#REG_GR(4)) ,gr4
- lddi @(gr31,#REG_GR(2)) ,gr2
- ldi.p @(gr31,#REG_SP) ,sp
-
- xor gr31,gr31,gr31
- movgs gr0,brr
-#ifdef CONFIG_MMU
- movsg scr3,gr31
-#endif
- rett #1
-
-###################################################################################################
-#
-# GDB stub "system calls"
-#
-###################################################################################################
-
-#ifdef CONFIG_GDBSTUB
- # void gdbstub_console_write(struct console *con, const char *p, unsigned n)
- .globl gdbstub_console_write
-gdbstub_console_write:
- break
- bralr
-#endif
-
- # GDB stub BUG() trap
- # GR8 is the proposed signal number
- .globl __debug_bug_trap
-__debug_bug_trap:
- break
- bralr
-
- # transfer kernel exeception to GDB for handling
- .globl __break_hijack_kernel_event
-__break_hijack_kernel_event:
- break
- .globl __break_hijack_kernel_event_breaks_here
-__break_hijack_kernel_event_breaks_here:
- nop
-
-#ifdef CONFIG_MMU
- # handle a return from TLB-miss that requires single-step reactivation
- .globl __break_tlb_miss_return_break
-__break_tlb_miss_return_break:
- break
-__break_tlb_miss_return_breaks_here:
- nop
-#endif
-
- # guard the first .text label in the next file from confusion
- nop
+++ /dev/null
-/* cmode.S: clock mode management
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Woodhouse (dwmw2@infradead.org)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/sys.h>
-#include <linux/linkage.h>
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/ptrace.h>
-#include <asm/errno.h>
-#include <asm/cache.h>
-#include <asm/spr-regs.h>
-
-#define __addr_MASK 0xfeff9820 /* interrupt controller mask */
-
-#define __addr_SDRAMC 0xfe000400 /* SDRAM controller regs */
-#define SDRAMC_DSTS 0x28 /* SDRAM status */
-#define SDRAMC_DSTS_SSI 0x00000001 /* indicates that the SDRAM is in self-refresh mode */
-#define SDRAMC_DRCN 0x30 /* SDRAM refresh control */
-#define SDRAMC_DRCN_SR 0x00000001 /* transition SDRAM into self-refresh mode */
-#define __addr_CLKC 0xfeff9a00
-#define CLKC_SWCMODE 0x00000008
-#define __addr_LEDS 0xe1200004
-
-.macro li v r
- sethi.p %hi(\v),\r
- setlo %lo(\v),\r
-.endm
-
- .text
- .balign 4
-
-
-###############################################################################
-#
-# Change CMODE
-# - void frv_change_cmode(int cmode)
-#
-###############################################################################
- .globl frv_change_cmode
- .type frv_change_cmode,@function
-
-.macro LEDS v
-#ifdef DEBUG_CMODE
- setlos #~\v,gr10
- sti gr10,@(gr11,#0)
- membar
-#endif
-.endm
-
-frv_change_cmode:
- movsg lr,gr9
-#ifdef DEBUG_CMODE
- li __addr_LEDS,gr11
-#endif
- dcef @(gr0,gr0),#1
-
- # Shift argument left by 24 bits to fit in SWCMODE register later.
- slli gr8,#24,gr8
-
- # (1) Set '0' in the PSR.ET bit, and prohibit interrupts.
- movsg psr,gr14
- andi gr14,#~PSR_ET,gr3
- movgs gr3,psr
-
-#if 0 // Fujitsu recommend to skip this and will update docs.
- # (2) Set '0' to all bits of the MASK register of the interrupt
- # controller, and mask interrupts.
- li __addr_MASK,gr12
- ldi @(gr12,#0),gr13
- li 0xffff0000,gr4
- sti gr4,@(gr12,#0)
-#endif
-
- # (3) Stop the transfer function of DMAC. Stop all the bus masters
- # to access SDRAM and the internal resources.
-
- # (already done by caller)
-
- # (4) Preload a series of following instructions to the instruction
- # cache.
- li #__cmode_icache_lock_start,gr3
- li #__cmode_icache_lock_end,gr4
-
-1: icpl gr3,gr0,#1
- addi gr3,#L1_CACHE_BYTES,gr3
- cmp gr4,gr3,icc0
- bhi icc0,#0,1b
-
- # Set up addresses in regs for later steps.
- setlos SDRAMC_DRCN_SR,gr3
- li __addr_SDRAMC,gr4
- li __addr_CLKC,gr5
- ldi @(gr5,#0),gr6
- li #0x80000000,gr7
- or gr6,gr7,gr6
-
- bra __cmode_icache_lock_start
-
- .balign L1_CACHE_BYTES
-__cmode_icache_lock_start:
-
- # (5) Flush the content of all caches by the DCEF instruction.
- dcef @(gr0,gr0),#1
-
- # (6) Execute loading the dummy for SDRAM.
- ldi @(gr9,#0),gr0
-
- # (7) Set '1' to the DRCN.SR bit, and change SDRAM to the
- # self-refresh mode. Execute the dummy load to all memory
- # devices set to cacheable on the external bus side in parallel
- # with this.
- sti gr3,@(gr4,#SDRAMC_DRCN)
-
- # (8) Execute memory barrier instruction (MEMBAR).
- membar
-
- # (9) Read the DSTS register repeatedly until '1' stands in the
- # DSTS.SSI field.
-1: ldi @(gr4,#SDRAMC_DSTS),gr3
- andicc gr3,#SDRAMC_DSTS_SSI,gr3,icc0
- beq icc0,#0,1b
-
- # (10) Execute memory barrier instruction (MEMBAR).
- membar
-
-#if 1
- # (11) Set the value of CMODE that you want to change to
- # SWCMODE.SWCM[3:0].
- sti gr8,@(gr5,#CLKC_SWCMODE)
-
- # (12) Set '1' to the CLKC.SWEN bit. In that case, do not change
- # fields other than SWEN of the CLKC register.
- sti gr6,@(gr5,#0)
-#endif
- # (13) Execute the instruction just after the memory barrier
- # instruction that executes the self-loop 256 times. (Meanwhile,
- # the CMODE switch is done.)
- membar
- setlos #256,gr7
-2: subicc gr7,#1,gr7,icc0
- bne icc0,#2,2b
-
- LEDS 0x36
-
- # (14) Release the self-refresh of SDRAM.
- sti gr0,@(gr4,#SDRAMC_DRCN)
-
- # Wait for it...
-3: ldi @(gr4,#SDRAMC_DSTS),gr3
- andicc gr3,#SDRAMC_DSTS_SSI,gr3,icc0
- bne icc0,#2,3b
-
-#if 0
- li 0x0100000,gr10
-4: subicc gr10,#1,gr10,icc0
-
- bne icc0,#0,4b
-#endif
-
-__cmode_icache_lock_end:
-
- li #__cmode_icache_lock_start,gr3
- li #__cmode_icache_lock_end,gr4
-
-4: icul gr3
- addi gr3,#L1_CACHE_BYTES,gr3
- cmp gr4,gr3,icc0
- bhi icc0,#0,4b
-
-#if 0 // Fujitsu recommend to skip this and will update docs.
- # (15) Release the interrupt mask setting of the MASK register of
- # the interrupt controller if necessary.
- sti gr13,@(gr12,#0)
-#endif
- # (16) Set 1' in the PSR.ET bit, and permit interrupt.
- movgs gr14,psr
-
- bralr
-
- .size frv_change_cmode, .-frv_change_cmode
+++ /dev/null
-/* debug-stub.c: debug-mode stub
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/serial_reg.h>
-#include <linux/start_kernel.h>
-
-#include <asm/serial-regs.h>
-#include <asm/timer-regs.h>
-#include <asm/irc-regs.h>
-#include <asm/gdb-stub.h>
-#include "gdb-io.h"
-
-/* CPU board CON5 */
-#define __UART0(X) (*(volatile uint8_t *)(UART0_BASE + (UART_##X)))
-
-#define LSR_WAIT_FOR0(STATE) \
-do { \
-} while (!(__UART0(LSR) & UART_LSR_##STATE))
-
-#define FLOWCTL_QUERY0(LINE) ({ __UART0(MSR) & UART_MSR_##LINE; })
-#define FLOWCTL_CLEAR0(LINE) do { __UART0(MCR) &= ~UART_MCR_##LINE; } while (0)
-#define FLOWCTL_SET0(LINE) do { __UART0(MCR) |= UART_MCR_##LINE; } while (0)
-
-#define FLOWCTL_WAIT_FOR0(LINE) \
-do { \
- gdbstub_do_rx(); \
-} while(!FLOWCTL_QUERY(LINE))
-
-struct frv_debug_status __debug_status;
-
-static void __init debug_stub_init(void);
-
-/*****************************************************************************/
-/*
- * debug mode handler stub
- * - we come here with the CPU in debug mode and with exceptions disabled
- * - handle debugging services for userspace
- */
-asmlinkage void debug_stub(void)
-{
- unsigned long hsr0;
- int type = 0;
-
- static u8 inited = 0;
- if (!inited) {
- debug_stub_init();
- type = -1;
- inited = 1;
- }
-
- hsr0 = __get_HSR(0);
- if (hsr0 & HSR0_ETMD)
- __set_HSR(0, hsr0 & ~HSR0_ETMD);
-
- /* disable single stepping */
- __debug_status.dcr &= ~DCR_SE;
-
- /* kernel mode can propose an exception be handled in debug mode by jumping to a special
- * location */
- if (__debug_frame->pc == (unsigned long) __break_hijack_kernel_event_breaks_here) {
- /* replace the debug frame with the kernel frame and discard
- * the top kernel context */
- *__debug_frame = *__frame;
- __frame = __debug_frame->next_frame;
- __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12;
- __debug_status.brr |= BRR_EB;
- }
-
- if (__debug_frame->pc == (unsigned long) __debug_bug_trap + 4) {
- __debug_frame->pc = __debug_frame->lr;
- type = __debug_frame->gr8;
- }
-
-#ifdef CONFIG_GDBSTUB
- gdbstub(type);
-#endif
-
- if (hsr0 & HSR0_ETMD)
- __set_HSR(0, __get_HSR(0) | HSR0_ETMD);
-
-} /* end debug_stub() */
-
-/*****************************************************************************/
-/*
- * debug stub initialisation
- */
-static void __init debug_stub_init(void)
-{
- __set_IRR(6, 0xff000000); /* map ERRs to NMI */
- __set_IITMR(1, 0x20000000); /* ERR0/1, UART0/1 IRQ detect levels */
-
- asm volatile(" movgs gr0,ibar0 \n"
- " movgs gr0,ibar1 \n"
- " movgs gr0,ibar2 \n"
- " movgs gr0,ibar3 \n"
- " movgs gr0,dbar0 \n"
- " movgs gr0,dbmr00 \n"
- " movgs gr0,dbmr01 \n"
- " movgs gr0,dbdr00 \n"
- " movgs gr0,dbdr01 \n"
- " movgs gr0,dbar1 \n"
- " movgs gr0,dbmr10 \n"
- " movgs gr0,dbmr11 \n"
- " movgs gr0,dbdr10 \n"
- " movgs gr0,dbdr11 \n"
- );
-
- /* deal with debugging stub initialisation and initial pause */
- if (__debug_frame->pc == (unsigned long) __debug_stub_init_break)
- __debug_frame->pc = (unsigned long) start_kernel;
-
- /* enable the debug events we want to trap */
- __debug_status.dcr = DCR_EBE;
-
-#ifdef CONFIG_GDBSTUB
- gdbstub_init();
-#endif
-
- __clr_MASK_all();
- __clr_MASK(15);
- __clr_RC(15);
-
-} /* end debug_stub_init() */
-
-/*****************************************************************************/
-/*
- * kernel "exit" trap for gdb stub
- */
-void debug_stub_exit(int status)
-{
-
-#ifdef CONFIG_GDBSTUB
- gdbstub_exit(status);
-#endif
-
-} /* end debug_stub_exit() */
-
-/*****************************************************************************/
-/*
- * send string to serial port
- */
-void debug_to_serial(const char *p, int n)
-{
- char ch;
-
- for (; n > 0; n--) {
- ch = *p++;
- FLOWCTL_SET0(DTR);
- LSR_WAIT_FOR0(THRE);
- // FLOWCTL_WAIT_FOR(CTS);
-
- if (ch == 0x0a) {
- __UART0(TX) = 0x0d;
- mb();
- LSR_WAIT_FOR0(THRE);
- // FLOWCTL_WAIT_FOR(CTS);
- }
- __UART0(TX) = ch;
- mb();
-
- FLOWCTL_CLEAR0(DTR);
- }
-
-} /* end debug_to_serial() */
-
-/*****************************************************************************/
-/*
- * send string to serial port
- */
-void debug_to_serial2(const char *fmt, ...)
-{
- va_list va;
- char buf[64];
- int n;
-
- va_start(va, fmt);
- n = vsprintf(buf, fmt, va);
- va_end(va);
-
- debug_to_serial(buf, n);
-
-} /* end debug_to_serial2() */
-
-/*****************************************************************************/
-/*
- * set up the ttyS0 serial port baud rate timers
- */
-void __init console_set_baud(unsigned baud)
-{
- unsigned value, high, low;
- u8 lcr;
-
- /* work out the divisor to give us the nearest higher baud rate */
- value = __serial_clock_speed_HZ / 16 / baud;
-
- /* determine the baud rate range */
- high = __serial_clock_speed_HZ / 16 / value;
- low = __serial_clock_speed_HZ / 16 / (value + 1);
-
- /* pick the nearest bound */
- if (low + (high - low) / 2 > baud)
- value++;
-
- lcr = __UART0(LCR);
- __UART0(LCR) |= UART_LCR_DLAB;
- mb();
- __UART0(DLL) = value & 0xff;
- __UART0(DLM) = (value >> 8) & 0xff;
- mb();
- __UART0(LCR) = lcr;
- mb();
-
-} /* end console_set_baud() */
-
-/*****************************************************************************/
-/*
- *
- */
-int __init console_get_baud(void)
-{
- unsigned value;
- u8 lcr;
-
- lcr = __UART0(LCR);
- __UART0(LCR) |= UART_LCR_DLAB;
- mb();
- value = __UART0(DLM) << 8;
- value |= __UART0(DLL);
- __UART0(LCR) = lcr;
- mb();
-
- return value;
-} /* end console_get_baud() */
-
-/*****************************************************************************/
-/*
- * display BUG() info
- */
-#ifndef CONFIG_NO_KERNEL_MSG
-void __debug_bug_printk(const char *file, unsigned line)
-{
- printk("kernel BUG at %s:%d!\n", file, line);
-
-} /* end __debug_bug_printk() */
-#endif
+++ /dev/null
-/* dma.c: DMA controller management on FR401 and the like
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <asm/dma.h>
-#include <asm/gpio-regs.h>
-#include <asm/irc-regs.h>
-#include <asm/cpu-irqs.h>
-
-struct frv_dma_channel {
- uint8_t flags;
-#define FRV_DMA_FLAGS_RESERVED 0x01
-#define FRV_DMA_FLAGS_INUSE 0x02
-#define FRV_DMA_FLAGS_PAUSED 0x04
- uint8_t cap; /* capabilities available */
- int irq; /* completion IRQ */
- uint32_t dreqbit;
- uint32_t dackbit;
- uint32_t donebit;
- const unsigned long ioaddr; /* DMA controller regs addr */
- const char *devname;
- dma_irq_handler_t handler;
- void *data;
-};
-
-
-#define __get_DMAC(IO,X) ({ *(volatile unsigned long *)((IO) + DMAC_##X##x); })
-
-#define __set_DMAC(IO,X,V) \
-do { \
- *(volatile unsigned long *)((IO) + DMAC_##X##x) = (V); \
- mb(); \
-} while(0)
-
-#define ___set_DMAC(IO,X,V) \
-do { \
- *(volatile unsigned long *)((IO) + DMAC_##X##x) = (V); \
-} while(0)
-
-
-static struct frv_dma_channel frv_dma_channels[FRV_DMA_NCHANS] = {
- [0] = {
- .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK | FRV_DMA_CAP_DONE,
- .irq = IRQ_CPU_DMA0,
- .dreqbit = SIR_DREQ0_INPUT,
- .dackbit = SOR_DACK0_OUTPUT,
- .donebit = SOR_DONE0_OUTPUT,
- .ioaddr = 0xfe000900,
- },
- [1] = {
- .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK | FRV_DMA_CAP_DONE,
- .irq = IRQ_CPU_DMA1,
- .dreqbit = SIR_DREQ1_INPUT,
- .dackbit = SOR_DACK1_OUTPUT,
- .donebit = SOR_DONE1_OUTPUT,
- .ioaddr = 0xfe000980,
- },
- [2] = {
- .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK,
- .irq = IRQ_CPU_DMA2,
- .dreqbit = SIR_DREQ2_INPUT,
- .dackbit = SOR_DACK2_OUTPUT,
- .ioaddr = 0xfe000a00,
- },
- [3] = {
- .cap = FRV_DMA_CAP_DREQ | FRV_DMA_CAP_DACK,
- .irq = IRQ_CPU_DMA3,
- .dreqbit = SIR_DREQ3_INPUT,
- .dackbit = SOR_DACK3_OUTPUT,
- .ioaddr = 0xfe000a80,
- },
- [4] = {
- .cap = FRV_DMA_CAP_DREQ,
- .irq = IRQ_CPU_DMA4,
- .dreqbit = SIR_DREQ4_INPUT,
- .ioaddr = 0xfe001000,
- },
- [5] = {
- .cap = FRV_DMA_CAP_DREQ,
- .irq = IRQ_CPU_DMA5,
- .dreqbit = SIR_DREQ5_INPUT,
- .ioaddr = 0xfe001080,
- },
- [6] = {
- .cap = FRV_DMA_CAP_DREQ,
- .irq = IRQ_CPU_DMA6,
- .dreqbit = SIR_DREQ6_INPUT,
- .ioaddr = 0xfe001100,
- },
- [7] = {
- .cap = FRV_DMA_CAP_DREQ,
- .irq = IRQ_CPU_DMA7,
- .dreqbit = SIR_DREQ7_INPUT,
- .ioaddr = 0xfe001180,
- },
-};
-
-static DEFINE_RWLOCK(frv_dma_channels_lock);
-
-unsigned int frv_dma_inprogress;
-
-#define frv_clear_dma_inprogress(channel) \
- (void)__atomic32_fetch_and(~(1 << (channel)), &frv_dma_inprogress);
-
-#define frv_set_dma_inprogress(channel) \
- (void)__atomic32_fetch_or(1 << (channel), &frv_dma_inprogress);
-
-/*****************************************************************************/
-/*
- * DMA irq handler - determine channel involved, grab status and call real handler
- */
-static irqreturn_t dma_irq_handler(int irq, void *_channel)
-{
- struct frv_dma_channel *channel = _channel;
-
- frv_clear_dma_inprogress(channel - frv_dma_channels);
- return channel->handler(channel - frv_dma_channels,
- __get_DMAC(channel->ioaddr, CSTR),
- channel->data);
-
-} /* end dma_irq_handler() */
-
-/*****************************************************************************/
-/*
- * Determine which DMA controllers are present on this CPU
- */
-void __init frv_dma_init(void)
-{
- unsigned long psr = __get_PSR();
- int num_dma, i;
-
- /* First, determine how many DMA channels are available */
- switch (PSR_IMPLE(psr)) {
- case PSR_IMPLE_FR405:
- case PSR_IMPLE_FR451:
- case PSR_IMPLE_FR501:
- case PSR_IMPLE_FR551:
- num_dma = FRV_DMA_8CHANS;
- break;
-
- case PSR_IMPLE_FR401:
- default:
- num_dma = FRV_DMA_4CHANS;
- break;
- }
-
- /* Now mark all of the non-existent channels as reserved */
- for(i = num_dma; i < FRV_DMA_NCHANS; i++)
- frv_dma_channels[i].flags = FRV_DMA_FLAGS_RESERVED;
-
-} /* end frv_dma_init() */
-
-/*****************************************************************************/
-/*
- * allocate a DMA controller channel and the IRQ associated with it
- */
-int frv_dma_open(const char *devname,
- unsigned long dmamask,
- int dmacap,
- dma_irq_handler_t handler,
- unsigned long irq_flags,
- void *data)
-{
- struct frv_dma_channel *channel;
- int dma, ret;
- uint32_t val;
-
- write_lock(&frv_dma_channels_lock);
-
- ret = -ENOSPC;
-
- for (dma = FRV_DMA_NCHANS - 1; dma >= 0; dma--) {
- channel = &frv_dma_channels[dma];
-
- if (!test_bit(dma, &dmamask))
- continue;
-
- if ((channel->cap & dmacap) != dmacap)
- continue;
-
- if (!frv_dma_channels[dma].flags)
- goto found;
- }
-
- goto out;
-
- found:
- ret = request_irq(channel->irq, dma_irq_handler, irq_flags, devname, channel);
- if (ret < 0)
- goto out;
-
- /* okay, we've allocated all the resources */
- channel = &frv_dma_channels[dma];
-
- channel->flags |= FRV_DMA_FLAGS_INUSE;
- channel->devname = devname;
- channel->handler = handler;
- channel->data = data;
-
- /* Now make sure we are set up for DMA and not GPIO */
- /* SIR bit must be set for DMA to work */
- __set_SIR(channel->dreqbit | __get_SIR());
- /* SOR bits depend on what the caller requests */
- val = __get_SOR();
- if(dmacap & FRV_DMA_CAP_DACK)
- val |= channel->dackbit;
- else
- val &= ~channel->dackbit;
- if(dmacap & FRV_DMA_CAP_DONE)
- val |= channel->donebit;
- else
- val &= ~channel->donebit;
- __set_SOR(val);
-
- ret = dma;
- out:
- write_unlock(&frv_dma_channels_lock);
- return ret;
-} /* end frv_dma_open() */
-
-EXPORT_SYMBOL(frv_dma_open);
-
-/*****************************************************************************/
-/*
- * close a DMA channel and its associated interrupt
- */
-void frv_dma_close(int dma)
-{
- struct frv_dma_channel *channel = &frv_dma_channels[dma];
- unsigned long flags;
-
- write_lock_irqsave(&frv_dma_channels_lock, flags);
-
- free_irq(channel->irq, channel);
- frv_dma_stop(dma);
-
- channel->flags &= ~FRV_DMA_FLAGS_INUSE;
-
- write_unlock_irqrestore(&frv_dma_channels_lock, flags);
-} /* end frv_dma_close() */
-
-EXPORT_SYMBOL(frv_dma_close);
-
-/*****************************************************************************/
-/*
- * set static configuration on a DMA channel
- */
-void frv_dma_config(int dma, unsigned long ccfr, unsigned long cctr, unsigned long apr)
-{
- unsigned long ioaddr = frv_dma_channels[dma].ioaddr;
-
- ___set_DMAC(ioaddr, CCFR, ccfr);
- ___set_DMAC(ioaddr, CCTR, cctr);
- ___set_DMAC(ioaddr, APR, apr);
- mb();
-
-} /* end frv_dma_config() */
-
-EXPORT_SYMBOL(frv_dma_config);
-
-/*****************************************************************************/
-/*
- * start a DMA channel
- */
-void frv_dma_start(int dma,
- unsigned long sba, unsigned long dba,
- unsigned long pix, unsigned long six, unsigned long bcl)
-{
- unsigned long ioaddr = frv_dma_channels[dma].ioaddr;
-
- ___set_DMAC(ioaddr, SBA, sba);
- ___set_DMAC(ioaddr, DBA, dba);
- ___set_DMAC(ioaddr, PIX, pix);
- ___set_DMAC(ioaddr, SIX, six);
- ___set_DMAC(ioaddr, BCL, bcl);
- ___set_DMAC(ioaddr, CSTR, 0);
- mb();
-
- __set_DMAC(ioaddr, CCTR, __get_DMAC(ioaddr, CCTR) | DMAC_CCTRx_ACT);
- frv_set_dma_inprogress(dma);
-
-} /* end frv_dma_start() */
-
-EXPORT_SYMBOL(frv_dma_start);
-
-/*****************************************************************************/
-/*
- * restart a DMA channel that's been stopped in circular addressing mode by comparison-end
- */
-void frv_dma_restart_circular(int dma, unsigned long six)
-{
- unsigned long ioaddr = frv_dma_channels[dma].ioaddr;
-
- ___set_DMAC(ioaddr, SIX, six);
- ___set_DMAC(ioaddr, CSTR, __get_DMAC(ioaddr, CSTR) & ~DMAC_CSTRx_CE);
- mb();
-
- __set_DMAC(ioaddr, CCTR, __get_DMAC(ioaddr, CCTR) | DMAC_CCTRx_ACT);
- frv_set_dma_inprogress(dma);
-
-} /* end frv_dma_restart_circular() */
-
-EXPORT_SYMBOL(frv_dma_restart_circular);
-
-/*****************************************************************************/
-/*
- * stop a DMA channel
- */
-void frv_dma_stop(int dma)
-{
- unsigned long ioaddr = frv_dma_channels[dma].ioaddr;
- uint32_t cctr;
-
- ___set_DMAC(ioaddr, CSTR, 0);
- cctr = __get_DMAC(ioaddr, CCTR);
- cctr &= ~(DMAC_CCTRx_IE | DMAC_CCTRx_ACT);
- cctr |= DMAC_CCTRx_FC; /* fifo clear */
- __set_DMAC(ioaddr, CCTR, cctr);
- __set_DMAC(ioaddr, BCL, 0);
- frv_clear_dma_inprogress(dma);
-} /* end frv_dma_stop() */
-
-EXPORT_SYMBOL(frv_dma_stop);
-
-/*****************************************************************************/
-/*
- * test interrupt status of DMA channel
- */
-int is_frv_dma_interrupting(int dma)
-{
- unsigned long ioaddr = frv_dma_channels[dma].ioaddr;
-
- return __get_DMAC(ioaddr, CSTR) & (1 << 23);
-
-} /* end is_frv_dma_interrupting() */
-
-EXPORT_SYMBOL(is_frv_dma_interrupting);
-
-/*****************************************************************************/
-/*
- * dump data about a DMA channel
- */
-void frv_dma_dump(int dma)
-{
- unsigned long ioaddr = frv_dma_channels[dma].ioaddr;
- unsigned long cstr, pix, six, bcl;
-
- cstr = __get_DMAC(ioaddr, CSTR);
- pix = __get_DMAC(ioaddr, PIX);
- six = __get_DMAC(ioaddr, SIX);
- bcl = __get_DMAC(ioaddr, BCL);
-
- printk("DMA[%d] cstr=%lx pix=%lx six=%lx bcl=%lx\n", dma, cstr, pix, six, bcl);
-
-} /* end frv_dma_dump() */
-
-EXPORT_SYMBOL(frv_dma_dump);
-
-/*****************************************************************************/
-/*
- * pause all DMA controllers
- * - called by clock mangling routines
- * - caller must be holding interrupts disabled
- */
-void frv_dma_pause_all(void)
-{
- struct frv_dma_channel *channel;
- unsigned long ioaddr;
- unsigned long cstr, cctr;
- int dma;
-
- write_lock(&frv_dma_channels_lock);
-
- for (dma = FRV_DMA_NCHANS - 1; dma >= 0; dma--) {
- channel = &frv_dma_channels[dma];
-
- if (!(channel->flags & FRV_DMA_FLAGS_INUSE))
- continue;
-
- ioaddr = channel->ioaddr;
- cctr = __get_DMAC(ioaddr, CCTR);
- if (cctr & DMAC_CCTRx_ACT) {
- cctr &= ~DMAC_CCTRx_ACT;
- __set_DMAC(ioaddr, CCTR, cctr);
-
- do {
- cstr = __get_DMAC(ioaddr, CSTR);
- } while (cstr & DMAC_CSTRx_BUSY);
-
- if (cstr & DMAC_CSTRx_FED)
- channel->flags |= FRV_DMA_FLAGS_PAUSED;
- frv_clear_dma_inprogress(dma);
- }
- }
-
-} /* end frv_dma_pause_all() */
-
-EXPORT_SYMBOL(frv_dma_pause_all);
-
-/*****************************************************************************/
-/*
- * resume paused DMA controllers
- * - called by clock mangling routines
- * - caller must be holding interrupts disabled
- */
-void frv_dma_resume_all(void)
-{
- struct frv_dma_channel *channel;
- unsigned long ioaddr;
- unsigned long cstr, cctr;
- int dma;
-
- for (dma = FRV_DMA_NCHANS - 1; dma >= 0; dma--) {
- channel = &frv_dma_channels[dma];
-
- if (!(channel->flags & FRV_DMA_FLAGS_PAUSED))
- continue;
-
- ioaddr = channel->ioaddr;
- cstr = __get_DMAC(ioaddr, CSTR);
- cstr &= ~(DMAC_CSTRx_FED | DMAC_CSTRx_INT);
- __set_DMAC(ioaddr, CSTR, cstr);
-
- cctr = __get_DMAC(ioaddr, CCTR);
- cctr |= DMAC_CCTRx_ACT;
- __set_DMAC(ioaddr, CCTR, cctr);
-
- channel->flags &= ~FRV_DMA_FLAGS_PAUSED;
- frv_set_dma_inprogress(dma);
- }
-
- write_unlock(&frv_dma_channels_lock);
-
-} /* end frv_dma_resume_all() */
-
-EXPORT_SYMBOL(frv_dma_resume_all);
-
-/*****************************************************************************/
-/*
- * dma status clear
- */
-void frv_dma_status_clear(int dma)
-{
- unsigned long ioaddr = frv_dma_channels[dma].ioaddr;
- uint32_t cctr;
- ___set_DMAC(ioaddr, CSTR, 0);
-
- cctr = __get_DMAC(ioaddr, CCTR);
-} /* end frv_dma_status_clear() */
-
-EXPORT_SYMBOL(frv_dma_status_clear);
+++ /dev/null
-/* entry-table.S: main trap vector tables and exception jump table
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/sys.h>
-#include <linux/linkage.h>
-#include <asm/spr-regs.h>
-
-###############################################################################
-#
-# Declare the main trap and vector tables
-#
-# There are six tables:
-#
-# (1) The trap table for debug mode
-# (2) The trap table for kernel mode
-# (3) The trap table for user mode
-#
-# The CPU jumps to an appropriate slot in the appropriate table to perform
-# exception processing. We have three different tables for the three
-# different CPU modes because there is no hardware differentiation between
-# stack pointers for these three modes, and so we have to invent one when
-# crossing mode boundaries.
-#
-# (4) The exception handler vector table
-#
-# The user and kernel trap tables use the same prologue for normal
-# exception processing. The prologue then jumps to the handler in this
-# table, as indexed by the exception ID from the TBR.
-#
-# (5) The fixup table for kernel-trap single-step
-# (6) The fixup table for user-trap single-step
-#
-# Due to the way single-stepping works on this CPU (single-step is not
-# disabled when crossing exception boundaries, only when in debug mode),
-# we have to catch the single-step event in break.S and jump to the fixup
-# routine pointed to by this table.
-#
-# The linker script places the user mode and kernel mode trap tables on to
-# the same 8Kb page, so that break.S can be more efficient when performing
-# single-step bypass management
-#
-###############################################################################
-
- # trap table for entry from debug mode
- .section .trap.break,"ax"
- .balign 256*16
- .globl __entry_breaktrap_table
-__entry_breaktrap_table:
-
- # trap table for entry from user mode
- .section .trap.user,"ax"
- .balign 256*16
- .globl __entry_usertrap_table
-__entry_usertrap_table:
-
- # trap table for entry from kernel mode
- .section .trap.kernel,"ax"
- .balign 256*16
- .globl __entry_kerneltrap_table
-__entry_kerneltrap_table:
-
- # exception handler jump table
- .section .trap.vector,"ax"
- .balign 256*4
- .globl __entry_vector_table
-__entry_vector_table:
-
- # trap fixup table for single-stepping in user mode
- .section .trap.fixup.user,"a"
- .balign 256*4
- .globl __break_usertrap_fixup_table
-__break_usertrap_fixup_table:
-
- # trap fixup table for single-stepping in user mode
- .section .trap.fixup.kernel,"a"
- .balign 256*4
- .globl __break_kerneltrap_fixup_table
-__break_kerneltrap_fixup_table:
-
- # handler declaration for a software or program interrupt
-.macro VECTOR_SOFTPROG tbr_tt, vec
- .section .trap.user
- .org \tbr_tt
- bra __entry_uspace_softprog_interrupt
- .section .trap.fixup.user
- .org \tbr_tt >> 2
- .long __break_step_uspace_softprog_interrupt
- .section .trap.kernel
- .org \tbr_tt
- bra __entry_kernel_softprog_interrupt
- .section .trap.fixup.kernel
- .org \tbr_tt >> 2
- .long __break_step_kernel_softprog_interrupt
- .section .trap.vector
- .org \tbr_tt >> 2
- .long \vec
-.endm
-
- # handler declaration for a maskable external interrupt
-.macro VECTOR_IRQ tbr_tt, vec
- .section .trap.user
- .org \tbr_tt
- bra __entry_uspace_external_interrupt
- .section .trap.fixup.user
- .org \tbr_tt >> 2
- .long __break_step_uspace_external_interrupt
- .section .trap.kernel
- .org \tbr_tt
- # deal with virtual interrupt disablement
- beq icc2,#0,__entry_kernel_external_interrupt_virtually_disabled
- bra __entry_kernel_external_interrupt
- .section .trap.fixup.kernel
- .org \tbr_tt >> 2
- .long __break_step_kernel_external_interrupt
- .section .trap.vector
- .org \tbr_tt >> 2
- .long \vec
-.endm
-
- # handler declaration for an NMI external interrupt
-.macro VECTOR_NMI tbr_tt, vec
- .section .trap.user
- .org \tbr_tt
- break
- break
- break
- break
- .section .trap.kernel
- .org \tbr_tt
- break
- break
- break
- break
- .section .trap.vector
- .org \tbr_tt >> 2
- .long \vec
-.endm
-
- # handler declaration for an MMU only software or program interrupt
-.macro VECTOR_SP_MMU tbr_tt, vec
-#ifdef CONFIG_MMU
- VECTOR_SOFTPROG \tbr_tt, \vec
-#else
- VECTOR_NMI \tbr_tt, 0
-#endif
-.endm
-
-
-###############################################################################
-#
-# specification of the vectors
-# - note: each macro inserts code into multiple sections
-#
-###############################################################################
- VECTOR_SP_MMU TBR_TT_INSTR_MMU_MISS, __entry_insn_mmu_miss
- VECTOR_SOFTPROG TBR_TT_INSTR_ACC_ERROR, __entry_insn_access_error
- VECTOR_SOFTPROG TBR_TT_INSTR_ACC_EXCEP, __entry_insn_access_exception
- VECTOR_SOFTPROG TBR_TT_PRIV_INSTR, __entry_privileged_instruction
- VECTOR_SOFTPROG TBR_TT_ILLEGAL_INSTR, __entry_illegal_instruction
- VECTOR_SOFTPROG TBR_TT_FP_EXCEPTION, __entry_media_exception
- VECTOR_SOFTPROG TBR_TT_MP_EXCEPTION, __entry_media_exception
- VECTOR_SOFTPROG TBR_TT_DATA_ACC_ERROR, __entry_data_access_error
- VECTOR_SP_MMU TBR_TT_DATA_MMU_MISS, __entry_data_mmu_miss
- VECTOR_SOFTPROG TBR_TT_DATA_ACC_EXCEP, __entry_data_access_exception
- VECTOR_SOFTPROG TBR_TT_DATA_STR_ERROR, __entry_data_store_error
- VECTOR_SOFTPROG TBR_TT_DIVISION_EXCEP, __entry_division_exception
-
-#ifdef CONFIG_MMU
- .section .trap.user
- .org TBR_TT_INSTR_TLB_MISS
- .globl __trap_user_insn_tlb_miss
-__trap_user_insn_tlb_miss:
- movsg ear0,gr28 /* faulting address */
- movsg scr0,gr31 /* get mapped PTD coverage start address */
- xor.p gr28,gr31,gr31 /* compare addresses */
- bra __entry_user_insn_tlb_miss
-
- .org TBR_TT_DATA_TLB_MISS
- .globl __trap_user_data_tlb_miss
-__trap_user_data_tlb_miss:
- movsg ear0,gr28 /* faulting address */
- movsg scr1,gr31 /* get mapped PTD coverage start address */
- xor.p gr28,gr31,gr31 /* compare addresses */
- bra __entry_user_data_tlb_miss
-
- .section .trap.kernel
- .org TBR_TT_INSTR_TLB_MISS
- .globl __trap_kernel_insn_tlb_miss
-__trap_kernel_insn_tlb_miss:
- movsg ear0,gr29 /* faulting address */
- movsg scr0,gr31 /* get mapped PTD coverage start address */
- xor.p gr29,gr31,gr31 /* compare addresses */
- bra __entry_kernel_insn_tlb_miss
-
- .org TBR_TT_DATA_TLB_MISS
- .globl __trap_kernel_data_tlb_miss
-__trap_kernel_data_tlb_miss:
- movsg ear0,gr29 /* faulting address */
- movsg scr1,gr31 /* get mapped PTD coverage start address */
- xor.p gr29,gr31,gr31 /* compare addresses */
- bra __entry_kernel_data_tlb_miss
-
- .section .trap.fixup.user
- .org TBR_TT_INSTR_TLB_MISS >> 2
- .globl __trap_fixup_user_insn_tlb_miss
-__trap_fixup_user_insn_tlb_miss:
- .long __break_user_insn_tlb_miss
- .org TBR_TT_DATA_TLB_MISS >> 2
- .globl __trap_fixup_user_data_tlb_miss
-__trap_fixup_user_data_tlb_miss:
- .long __break_user_data_tlb_miss
-
- .section .trap.fixup.kernel
- .org TBR_TT_INSTR_TLB_MISS >> 2
- .globl __trap_fixup_kernel_insn_tlb_miss
-__trap_fixup_kernel_insn_tlb_miss:
- .long __break_kernel_insn_tlb_miss
- .org TBR_TT_DATA_TLB_MISS >> 2
- .globl __trap_fixup_kernel_data_tlb_miss
-__trap_fixup_kernel_data_tlb_miss:
- .long __break_kernel_data_tlb_miss
-
- .section .trap.vector
- .org TBR_TT_INSTR_TLB_MISS >> 2
- .long __entry_insn_mmu_fault
- .org TBR_TT_DATA_TLB_MISS >> 2
- .long __entry_data_mmu_fault
-#endif
-
- VECTOR_SP_MMU TBR_TT_DATA_DAT_EXCEP, __entry_data_dat_fault
- VECTOR_NMI TBR_TT_DECREMENT_TIMER, __entry_do_NMI
- VECTOR_SOFTPROG TBR_TT_COMPOUND_EXCEP, __entry_compound_exception
- VECTOR_IRQ TBR_TT_INTERRUPT_1, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_2, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_3, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_4, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_5, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_6, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_7, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_8, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_9, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_10, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_11, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_12, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_13, __entry_do_IRQ
- VECTOR_IRQ TBR_TT_INTERRUPT_14, __entry_do_IRQ
- VECTOR_NMI TBR_TT_INTERRUPT_15, __entry_do_NMI
-
- # miscellaneous user mode entry points
- .section .trap.user
- .org TBR_TT_TRAP0
- .rept 127
- bra __entry_uspace_softprog_interrupt
- .long 0,0,0
- .endr
- .org TBR_TT_BREAK
- bra __entry_break
- .long 0,0,0
-
- .section .trap.fixup.user
- .org TBR_TT_TRAP0 >> 2
- .rept 127
- .long __break_step_uspace_softprog_interrupt
- .endr
- .org TBR_TT_BREAK >> 2
- .long 0
-
- # miscellaneous kernel mode entry points
- .section .trap.kernel
- .org TBR_TT_TRAP0
- bra __entry_kernel_softprog_interrupt
- .org TBR_TT_TRAP1
- bra __entry_kernel_softprog_interrupt
-
- # trap #2 in kernel - reenable interrupts
- .org TBR_TT_TRAP2
- bra __entry_kernel_external_interrupt_virtual_reenable
-
- # miscellaneous kernel traps
- .org TBR_TT_TRAP3
- .rept 124
- bra __entry_kernel_softprog_interrupt
- .long 0,0,0
- .endr
- .org TBR_TT_BREAK
- bra __entry_break
- .long 0,0,0
-
- .section .trap.fixup.kernel
- .org TBR_TT_TRAP0 >> 2
- .long __break_step_kernel_softprog_interrupt
- .long __break_step_kernel_softprog_interrupt
- .long __break_step_kernel_external_interrupt_virtual_reenable
- .rept 124
- .long __break_step_kernel_softprog_interrupt
- .endr
- .org TBR_TT_BREAK >> 2
- .long 0
-
- # miscellaneous debug mode entry points
- .section .trap.break
- .org TBR_TT_BREAK
- movsg bpcsr,gr30
- jmpl @(gr30,gr0)
-
- # miscellaneous vectors
- .section .trap.vector
- .org TBR_TT_TRAP0 >> 2
- .long system_call
- .rept 119
- .long __entry_unsupported_trap
- .endr
-
- # userspace atomic op emulation, traps 120-126
- .rept 7
- .long __entry_atomic_op
- .endr
-
- .org TBR_TT_BREAK >> 2
- .long __entry_debug_exception
+++ /dev/null
-/* entry.S: FR-V entry
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- *
- * Entry to the kernel is "interesting":
- * (1) There are no stack pointers, not even for the kernel
- * (2) General Registers should not be clobbered
- * (3) There are no kernel-only data registers
- * (4) Since all addressing modes are wrt to a General Register, no global
- * variables can be reached
- *
- * We deal with this by declaring that we shall kill GR28 on entering the
- * kernel from userspace
- *
- * However, since break interrupts can interrupt the CPU even when PSR.ET==0,
- * they can't rely on GR28 to be anything useful, and so need to clobber a
- * separate register (GR31). Break interrupts are managed in break.S
- *
- * GR29 _is_ saved, and holds the current task pointer globally
- *
- */
-
-#include <linux/linkage.h>
-#include <asm/thread_info.h>
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/ptrace.h>
-#include <asm/errno.h>
-#include <asm/cache.h>
-#include <asm/spr-regs.h>
-
-#define nr_syscalls ((syscall_table_size)/4)
-
- .section .text..entry
- .balign 4
-
-.macro LEDS val
-# sethi.p %hi(0xe1200004),gr30
-# setlo %lo(0xe1200004),gr30
-# setlos #~\val,gr31
-# st gr31,@(gr30,gr0)
-# sethi.p %hi(0xffc00100),gr30
-# setlo %lo(0xffc00100),gr30
-# sth gr0,@(gr30,gr0)
-# membar
-.endm
-
-.macro LEDS32
-# not gr31,gr31
-# sethi.p %hi(0xe1200004),gr30
-# setlo %lo(0xe1200004),gr30
-# st.p gr31,@(gr30,gr0)
-# srli gr31,#16,gr31
-# sethi.p %hi(0xffc00100),gr30
-# setlo %lo(0xffc00100),gr30
-# sth gr31,@(gr30,gr0)
-# membar
-.endm
-
-###############################################################################
-#
-# entry point for External interrupts received whilst executing userspace code
-#
-###############################################################################
- .globl __entry_uspace_external_interrupt
- .type __entry_uspace_external_interrupt,@function
-__entry_uspace_external_interrupt:
- LEDS 0x6200
- sethi.p %hi(__kernel_frame0_ptr),gr28
- setlo %lo(__kernel_frame0_ptr),gr28
- ldi @(gr28,#0),gr28
-
- # handle h/w single-step through exceptions
- sti gr0,@(gr28,#REG__STATUS)
-
- .globl __entry_uspace_external_interrupt_reentry
-__entry_uspace_external_interrupt_reentry:
- LEDS 0x6201
-
- setlos #REG__END,gr30
- dcpl gr28,gr30,#0
-
- # finish building the exception frame
- sti sp, @(gr28,#REG_SP)
- stdi gr2, @(gr28,#REG_GR(2))
- stdi gr4, @(gr28,#REG_GR(4))
- stdi gr6, @(gr28,#REG_GR(6))
- stdi gr8, @(gr28,#REG_GR(8))
- stdi gr10,@(gr28,#REG_GR(10))
- stdi gr12,@(gr28,#REG_GR(12))
- stdi gr14,@(gr28,#REG_GR(14))
- stdi gr16,@(gr28,#REG_GR(16))
- stdi gr18,@(gr28,#REG_GR(18))
- stdi gr20,@(gr28,#REG_GR(20))
- stdi gr22,@(gr28,#REG_GR(22))
- stdi gr24,@(gr28,#REG_GR(24))
- stdi gr26,@(gr28,#REG_GR(26))
- sti gr0, @(gr28,#REG_GR(28))
- sti gr29,@(gr28,#REG_GR(29))
- stdi.p gr30,@(gr28,#REG_GR(30))
-
- # set up the kernel stack pointer
- ori gr28,0,sp
-
- movsg tbr ,gr20
- movsg psr ,gr22
- movsg pcsr,gr21
- movsg isr ,gr23
- movsg ccr ,gr24
- movsg cccr,gr25
- movsg lr ,gr26
- movsg lcr ,gr27
-
- setlos.p #-1,gr4
- andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
- andi.p gr22,#~(PSR_PS|PSR_S),gr6
- slli gr5,#1,gr5
- or gr6,gr5,gr5
- andi gr5,#~PSR_ET,gr5
-
- sti gr20,@(gr28,#REG_TBR)
- sti gr21,@(gr28,#REG_PC)
- sti gr5 ,@(gr28,#REG_PSR)
- sti gr23,@(gr28,#REG_ISR)
- stdi gr24,@(gr28,#REG_CCR)
- stdi gr26,@(gr28,#REG_LR)
- sti gr4 ,@(gr28,#REG_SYSCALLNO)
-
- movsg iacc0h,gr4
- movsg iacc0l,gr5
- stdi gr4,@(gr28,#REG_IACC0)
-
- movsg gner0,gr4
- movsg gner1,gr5
- stdi.p gr4,@(gr28,#REG_GNER0)
-
- # interrupts start off fully disabled in the interrupt handler
- subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
-
- # set up kernel global registers
- sethi.p %hi(__kernel_current_task),gr5
- setlo %lo(__kernel_current_task),gr5
- sethi.p %hi(_gp),gr16
- setlo %lo(_gp),gr16
- ldi @(gr5,#0),gr29
- ldi.p @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
-
- # make sure we (the kernel) get div-zero and misalignment exceptions
- setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
- movgs gr5,isr
-
- # switch to the kernel trap table
- sethi.p %hi(__entry_kerneltrap_table),gr6
- setlo %lo(__entry_kerneltrap_table),gr6
- movgs gr6,tbr
-
- # set the return address
- sethi.p %hi(__entry_return_from_user_interrupt),gr4
- setlo %lo(__entry_return_from_user_interrupt),gr4
- movgs gr4,lr
-
- # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
- movsg psr,gr4
-
- ori gr4,#PSR_PIL_14,gr4
- movgs gr4,psr
- ori gr4,#PSR_PIL_14|PSR_ET,gr4
- movgs gr4,psr
-
- LEDS 0x6202
- bra do_IRQ
-
- .size __entry_uspace_external_interrupt,.-__entry_uspace_external_interrupt
-
-###############################################################################
-#
-# entry point for External interrupts received whilst executing kernel code
-# - on arriving here, the following registers should already be set up:
-# GR15 - current thread_info struct pointer
-# GR16 - kernel GP-REL pointer
-# GR29 - current task struct pointer
-# TBR - kernel trap vector table
-# ISR - kernel's preferred integer controls
-#
-###############################################################################
- .globl __entry_kernel_external_interrupt
- .type __entry_kernel_external_interrupt,@function
-__entry_kernel_external_interrupt:
- LEDS 0x6210
-// sub sp,gr15,gr31
-// LEDS32
-
- # set up the stack pointer
- or.p sp,gr0,gr30
- subi sp,#REG__END,sp
- sti gr30,@(sp,#REG_SP)
-
- # handle h/w single-step through exceptions
- sti gr0,@(sp,#REG__STATUS)
-
- .globl __entry_kernel_external_interrupt_reentry
-__entry_kernel_external_interrupt_reentry:
- LEDS 0x6211
-
- # set up the exception frame
- setlos #REG__END,gr30
- dcpl sp,gr30,#0
-
- sti.p gr28,@(sp,#REG_GR(28))
- ori sp,0,gr28
-
- # finish building the exception frame
- stdi gr2,@(gr28,#REG_GR(2))
- stdi gr4,@(gr28,#REG_GR(4))
- stdi gr6,@(gr28,#REG_GR(6))
- stdi gr8,@(gr28,#REG_GR(8))
- stdi gr10,@(gr28,#REG_GR(10))
- stdi gr12,@(gr28,#REG_GR(12))
- stdi gr14,@(gr28,#REG_GR(14))
- stdi gr16,@(gr28,#REG_GR(16))
- stdi gr18,@(gr28,#REG_GR(18))
- stdi gr20,@(gr28,#REG_GR(20))
- stdi gr22,@(gr28,#REG_GR(22))
- stdi gr24,@(gr28,#REG_GR(24))
- stdi gr26,@(gr28,#REG_GR(26))
- sti gr29,@(gr28,#REG_GR(29))
- stdi.p gr30,@(gr28,#REG_GR(30))
-
- # note virtual interrupts will be fully enabled upon return
- subicc gr0,#1,gr0,icc2 /* clear Z, set C */
-
- movsg tbr ,gr20
- movsg psr ,gr22
- movsg pcsr,gr21
- movsg isr ,gr23
- movsg ccr ,gr24
- movsg cccr,gr25
- movsg lr ,gr26
- movsg lcr ,gr27
-
- setlos.p #-1,gr4
- andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
- andi.p gr22,#~(PSR_PS|PSR_S),gr6
- slli gr5,#1,gr5
- or gr6,gr5,gr5
- andi.p gr5,#~PSR_ET,gr5
-
- # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
- # - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt
- andi gr25,#~0xc0,gr25
-
- sti gr20,@(gr28,#REG_TBR)
- sti gr21,@(gr28,#REG_PC)
- sti gr5 ,@(gr28,#REG_PSR)
- sti gr23,@(gr28,#REG_ISR)
- stdi gr24,@(gr28,#REG_CCR)
- stdi gr26,@(gr28,#REG_LR)
- sti gr4 ,@(gr28,#REG_SYSCALLNO)
-
- movsg iacc0h,gr4
- movsg iacc0l,gr5
- stdi gr4,@(gr28,#REG_IACC0)
-
- movsg gner0,gr4
- movsg gner1,gr5
- stdi.p gr4,@(gr28,#REG_GNER0)
-
- # interrupts start off fully disabled in the interrupt handler
- subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
-
- # set the return address
- sethi.p %hi(__entry_return_from_kernel_interrupt),gr4
- setlo %lo(__entry_return_from_kernel_interrupt),gr4
- movgs gr4,lr
-
- # clear power-saving mode flags
- movsg hsr0,gr4
- andi gr4,#~HSR0_PDM,gr4
- movgs gr4,hsr0
-
- # raise the minimum interrupt priority to 15 (NMI only) and enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_PIL_14,gr4
- movgs gr4,psr
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
-
- LEDS 0x6212
- bra do_IRQ
-
- .size __entry_kernel_external_interrupt,.-__entry_kernel_external_interrupt
-
-###############################################################################
-#
-# deal with interrupts that were actually virtually disabled
-# - we need to really disable them, flag the fact and return immediately
-# - if you change this, you must alter break.S also
-#
-###############################################################################
- .balign L1_CACHE_BYTES
- .globl __entry_kernel_external_interrupt_virtually_disabled
- .type __entry_kernel_external_interrupt_virtually_disabled,@function
-__entry_kernel_external_interrupt_virtually_disabled:
- movsg psr,gr30
- andi gr30,#~PSR_PIL,gr30
- ori gr30,#PSR_PIL_14,gr30 ; debugging interrupts only
- movgs gr30,psr
- subcc gr0,gr0,gr0,icc2 ; leave Z set, clear C
- rett #0
-
- .size __entry_kernel_external_interrupt_virtually_disabled,.-__entry_kernel_external_interrupt_virtually_disabled
-
-###############################################################################
-#
-# deal with re-enablement of interrupts that were pending when virtually re-enabled
-# - set ICC2.C, re-enable the real interrupts and return
-# - we can clear ICC2.Z because we shouldn't be here if it's not 0 [due to TIHI]
-# - if you change this, you must alter break.S also
-#
-###############################################################################
- .balign L1_CACHE_BYTES
- .globl __entry_kernel_external_interrupt_virtual_reenable
- .type __entry_kernel_external_interrupt_virtual_reenable,@function
-__entry_kernel_external_interrupt_virtual_reenable:
- movsg psr,gr30
- andi gr30,#~PSR_PIL,gr30 ; re-enable interrupts
- movgs gr30,psr
- subicc gr0,#1,gr0,icc2 ; clear Z, set C
- rett #0
-
- .size __entry_kernel_external_interrupt_virtual_reenable,.-__entry_kernel_external_interrupt_virtual_reenable
-
-###############################################################################
-#
-# entry point for Software and Progam interrupts generated whilst executing userspace code
-#
-###############################################################################
- .globl __entry_uspace_softprog_interrupt
- .type __entry_uspace_softprog_interrupt,@function
- .globl __entry_uspace_handle_mmu_fault
-__entry_uspace_softprog_interrupt:
- LEDS 0x6000
-#ifdef CONFIG_MMU
- movsg ear0,gr28
-__entry_uspace_handle_mmu_fault:
- movgs gr28,scr2
-#endif
- sethi.p %hi(__kernel_frame0_ptr),gr28
- setlo %lo(__kernel_frame0_ptr),gr28
- ldi @(gr28,#0),gr28
-
- # handle h/w single-step through exceptions
- sti gr0,@(gr28,#REG__STATUS)
-
- .globl __entry_uspace_softprog_interrupt_reentry
-__entry_uspace_softprog_interrupt_reentry:
- LEDS 0x6001
-
- setlos #REG__END,gr30
- dcpl gr28,gr30,#0
-
- # set up the kernel stack pointer
- sti.p sp,@(gr28,#REG_SP)
- ori gr28,0,sp
- sti gr0,@(gr28,#REG_GR(28))
-
- stdi gr20,@(gr28,#REG_GR(20))
- stdi gr22,@(gr28,#REG_GR(22))
-
- movsg tbr,gr20
- movsg pcsr,gr21
- movsg psr,gr22
-
- sethi.p %hi(__entry_return_from_user_exception),gr23
- setlo %lo(__entry_return_from_user_exception),gr23
-
- bra __entry_common
-
- .size __entry_uspace_softprog_interrupt,.-__entry_uspace_softprog_interrupt
-
- # single-stepping was disabled on entry to a TLB handler that then faulted
-#ifdef CONFIG_MMU
- .globl __entry_uspace_handle_mmu_fault_sstep
-__entry_uspace_handle_mmu_fault_sstep:
- movgs gr28,scr2
- sethi.p %hi(__kernel_frame0_ptr),gr28
- setlo %lo(__kernel_frame0_ptr),gr28
- ldi @(gr28,#0),gr28
-
- # flag single-step re-enablement
- sti gr0,@(gr28,#REG__STATUS)
- bra __entry_uspace_softprog_interrupt_reentry
-#endif
-
-
-###############################################################################
-#
-# entry point for Software and Progam interrupts generated whilst executing kernel code
-#
-###############################################################################
- .globl __entry_kernel_softprog_interrupt
- .type __entry_kernel_softprog_interrupt,@function
-__entry_kernel_softprog_interrupt:
- LEDS 0x6004
-
-#ifdef CONFIG_MMU
- movsg ear0,gr30
- movgs gr30,scr2
-#endif
-
- .globl __entry_kernel_handle_mmu_fault
-__entry_kernel_handle_mmu_fault:
- # set up the stack pointer
- subi sp,#REG__END,sp
- sti sp,@(sp,#REG_SP)
- sti sp,@(sp,#REG_SP-4)
- andi sp,#~7,sp
-
- # handle h/w single-step through exceptions
- sti gr0,@(sp,#REG__STATUS)
-
- .globl __entry_kernel_softprog_interrupt_reentry
-__entry_kernel_softprog_interrupt_reentry:
- LEDS 0x6005
-
- setlos #REG__END,gr30
- dcpl sp,gr30,#0
-
- # set up the exception frame
- sti.p gr28,@(sp,#REG_GR(28))
- ori sp,0,gr28
-
- stdi gr20,@(gr28,#REG_GR(20))
- stdi gr22,@(gr28,#REG_GR(22))
-
- ldi @(sp,#REG_SP),gr22 /* reconstruct the old SP */
- addi gr22,#REG__END,gr22
- sti gr22,@(sp,#REG_SP)
-
- # set CCCR.CC3 to Undefined to abort atomic-modify completion inside the kernel
- # - for an explanation of how it works, see: Documentation/frv/atomic-ops.txt
- movsg cccr,gr20
- andi gr20,#~0xc0,gr20
- movgs gr20,cccr
-
- movsg tbr,gr20
- movsg pcsr,gr21
- movsg psr,gr22
-
- sethi.p %hi(__entry_return_from_kernel_exception),gr23
- setlo %lo(__entry_return_from_kernel_exception),gr23
- bra __entry_common
-
- .size __entry_kernel_softprog_interrupt,.-__entry_kernel_softprog_interrupt
-
- # single-stepping was disabled on entry to a TLB handler that then faulted
-#ifdef CONFIG_MMU
- .globl __entry_kernel_handle_mmu_fault_sstep
-__entry_kernel_handle_mmu_fault_sstep:
- # set up the stack pointer
- subi sp,#REG__END,sp
- sti sp,@(sp,#REG_SP)
- sti sp,@(sp,#REG_SP-4)
- andi sp,#~7,sp
-
- # flag single-step re-enablement
- sethi #REG__STATUS_STEP,gr30
- sti gr30,@(sp,#REG__STATUS)
- bra __entry_kernel_softprog_interrupt_reentry
-#endif
-
-
-###############################################################################
-#
-# the rest of the kernel entry point code
-# - on arriving here, the following registers should be set up:
-# GR1 - kernel stack pointer
-# GR7 - syscall number (trap 0 only)
-# GR8-13 - syscall args (trap 0 only)
-# GR20 - saved TBR
-# GR21 - saved PC
-# GR22 - saved PSR
-# GR23 - return handler address
-# GR28 - exception frame on stack
-# SCR2 - saved EAR0 where applicable (clobbered by ICI & ICEF insns on FR451)
-# PSR - PSR.S 1, PSR.ET 0
-#
-###############################################################################
- .globl __entry_common
- .type __entry_common,@function
-__entry_common:
- LEDS 0x6008
-
- # finish building the exception frame
- stdi gr2,@(gr28,#REG_GR(2))
- stdi gr4,@(gr28,#REG_GR(4))
- stdi gr6,@(gr28,#REG_GR(6))
- stdi gr8,@(gr28,#REG_GR(8))
- stdi gr10,@(gr28,#REG_GR(10))
- stdi gr12,@(gr28,#REG_GR(12))
- stdi gr14,@(gr28,#REG_GR(14))
- stdi gr16,@(gr28,#REG_GR(16))
- stdi gr18,@(gr28,#REG_GR(18))
- stdi gr24,@(gr28,#REG_GR(24))
- stdi gr26,@(gr28,#REG_GR(26))
- sti gr29,@(gr28,#REG_GR(29))
- stdi gr30,@(gr28,#REG_GR(30))
-
- movsg lcr ,gr27
- movsg lr ,gr26
- movgs gr23,lr
- movsg cccr,gr25
- movsg ccr ,gr24
- movsg isr ,gr23
-
- setlos.p #-1,gr4
- andi gr22,#PSR_PS,gr5 /* try to rebuild original PSR value */
- andi.p gr22,#~(PSR_PS|PSR_S),gr6
- slli gr5,#1,gr5
- or gr6,gr5,gr5
- andi gr5,#~PSR_ET,gr5
-
- sti gr20,@(gr28,#REG_TBR)
- sti gr21,@(gr28,#REG_PC)
- sti gr5 ,@(gr28,#REG_PSR)
- sti gr23,@(gr28,#REG_ISR)
- stdi gr24,@(gr28,#REG_CCR)
- stdi gr26,@(gr28,#REG_LR)
- sti gr4 ,@(gr28,#REG_SYSCALLNO)
-
- movsg iacc0h,gr4
- movsg iacc0l,gr5
- stdi gr4,@(gr28,#REG_IACC0)
-
- movsg gner0,gr4
- movsg gner1,gr5
- stdi.p gr4,@(gr28,#REG_GNER0)
-
- # set up virtual interrupt disablement
- subicc gr0,#1,gr0,icc2 /* clear Z flag, set C flag */
-
- # set up kernel global registers
- sethi.p %hi(__kernel_current_task),gr5
- setlo %lo(__kernel_current_task),gr5
- sethi.p %hi(_gp),gr16
- setlo %lo(_gp),gr16
- ldi @(gr5,#0),gr29
- ldi @(gr29,#4),gr15 ; __current_thread_info = current->thread_info
-
- # switch to the kernel trap table
- sethi.p %hi(__entry_kerneltrap_table),gr6
- setlo %lo(__entry_kerneltrap_table),gr6
- movgs gr6,tbr
-
- # make sure we (the kernel) get div-zero and misalignment exceptions
- setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
- movgs gr5,isr
-
- # clear power-saving mode flags
- movsg hsr0,gr4
- andi gr4,#~HSR0_PDM,gr4
- movgs gr4,hsr0
-
- # multiplex again using old TBR as a guide
- setlos.p #TBR_TT,gr3
- sethi %hi(__entry_vector_table),gr6
- and.p gr20,gr3,gr5
- setlo %lo(__entry_vector_table),gr6
- srli gr5,#2,gr5
- ld @(gr5,gr6),gr5
-
- LEDS 0x6009
- jmpl @(gr5,gr0)
-
-
- .size __entry_common,.-__entry_common
-
-###############################################################################
-#
-# handle instruction MMU fault
-#
-###############################################################################
-#ifdef CONFIG_MMU
- .globl __entry_insn_mmu_fault
-__entry_insn_mmu_fault:
- LEDS 0x6010
- setlos #0,gr8
- movsg esr0,gr9
- movsg scr2,gr10
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
-
- sethi.p %hi(do_page_fault),gr5
- setlo %lo(do_page_fault),gr5
- jmpl @(gr5,gr0) ; call do_page_fault(0,esr0,ear0)
-#endif
-
-
-###############################################################################
-#
-# handle instruction access error
-#
-###############################################################################
- .globl __entry_insn_access_error
-__entry_insn_access_error:
- LEDS 0x6011
- sethi.p %hi(insn_access_error),gr5
- setlo %lo(insn_access_error),gr5
- movsg esfr1,gr8
- movsg epcr0,gr9
- movsg esr0,gr10
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call insn_access_error(esfr1,epcr0,esr0)
-
-###############################################################################
-#
-# handle various instructions of dubious legality
-#
-###############################################################################
- .globl __entry_unsupported_trap
- .globl __entry_illegal_instruction
- .globl __entry_privileged_instruction
- .globl __entry_debug_exception
-__entry_unsupported_trap:
- subi gr21,#4,gr21
- sti gr21,@(gr28,#REG_PC)
-__entry_illegal_instruction:
-__entry_privileged_instruction:
-__entry_debug_exception:
- LEDS 0x6012
- sethi.p %hi(illegal_instruction),gr5
- setlo %lo(illegal_instruction),gr5
- movsg esfr1,gr8
- movsg epcr0,gr9
- movsg esr0,gr10
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call ill_insn(esfr1,epcr0,esr0)
-
-###############################################################################
-#
-# handle atomic operation emulation for userspace
-#
-###############################################################################
- .globl __entry_atomic_op
-__entry_atomic_op:
- LEDS 0x6012
- sethi.p %hi(atomic_operation),gr5
- setlo %lo(atomic_operation),gr5
- movsg esfr1,gr8
- movsg epcr0,gr9
- movsg esr0,gr10
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call atomic_operation(esfr1,epcr0,esr0)
-
-###############################################################################
-#
-# handle media exception
-#
-###############################################################################
- .globl __entry_media_exception
-__entry_media_exception:
- LEDS 0x6013
- sethi.p %hi(media_exception),gr5
- setlo %lo(media_exception),gr5
- movsg msr0,gr8
- movsg msr1,gr9
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call media_excep(msr0,msr1)
-
-###############################################################################
-#
-# handle data MMU fault
-# handle data DAT fault (write-protect exception)
-#
-###############################################################################
-#ifdef CONFIG_MMU
- .globl __entry_data_mmu_fault
-__entry_data_mmu_fault:
- .globl __entry_data_dat_fault
-__entry_data_dat_fault:
- LEDS 0x6014
- setlos #1,gr8
- movsg esr0,gr9
- movsg scr2,gr10 ; saved EAR0
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
-
- sethi.p %hi(do_page_fault),gr5
- setlo %lo(do_page_fault),gr5
- jmpl @(gr5,gr0) ; call do_page_fault(1,esr0,ear0)
-#endif
-
-###############################################################################
-#
-# handle data and instruction access exceptions
-#
-###############################################################################
- .globl __entry_insn_access_exception
- .globl __entry_data_access_exception
-__entry_insn_access_exception:
-__entry_data_access_exception:
- LEDS 0x6016
- sethi.p %hi(memory_access_exception),gr5
- setlo %lo(memory_access_exception),gr5
- movsg esr0,gr8
- movsg scr2,gr9 ; saved EAR0
- movsg epcr0,gr10
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call memory_access_error(esr0,ear0,epcr0)
-
-###############################################################################
-#
-# handle data access error
-#
-###############################################################################
- .globl __entry_data_access_error
-__entry_data_access_error:
- LEDS 0x6016
- sethi.p %hi(data_access_error),gr5
- setlo %lo(data_access_error),gr5
- movsg esfr1,gr8
- movsg esr15,gr9
- movsg ear15,gr10
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call data_access_error(esfr1,esr15,ear15)
-
-###############################################################################
-#
-# handle data store error
-#
-###############################################################################
- .globl __entry_data_store_error
-__entry_data_store_error:
- LEDS 0x6017
- sethi.p %hi(data_store_error),gr5
- setlo %lo(data_store_error),gr5
- movsg esfr1,gr8
- movsg esr14,gr9
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call data_store_error(esfr1,esr14)
-
-###############################################################################
-#
-# handle division exception
-#
-###############################################################################
- .globl __entry_division_exception
-__entry_division_exception:
- LEDS 0x6018
- sethi.p %hi(division_exception),gr5
- setlo %lo(division_exception),gr5
- movsg esfr1,gr8
- movsg esr0,gr9
- movsg isr,gr10
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call div_excep(esfr1,esr0,isr)
-
-###############################################################################
-#
-# handle compound exception
-#
-###############################################################################
- .globl __entry_compound_exception
-__entry_compound_exception:
- LEDS 0x6019
- sethi.p %hi(compound_exception),gr5
- setlo %lo(compound_exception),gr5
- movsg esfr1,gr8
- movsg esr0,gr9
- movsg esr14,gr10
- movsg esr15,gr11
- movsg msr0,gr12
- movsg msr1,gr13
-
- # now that we've accessed the exception regs, we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- jmpl @(gr5,gr0) ; call comp_excep(esfr1,esr0,esr14,esr15,msr0,msr1)
-
-###############################################################################
-#
-# handle interrupts and NMIs
-#
-###############################################################################
- .globl __entry_do_IRQ
-__entry_do_IRQ:
- LEDS 0x6020
-
- # we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- bra do_IRQ
-
- .globl __entry_do_NMI
-__entry_do_NMI:
- LEDS 0x6021
-
- # we can enable exceptions
- movsg psr,gr4
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
- bra do_NMI
-
-###############################################################################
-#
-# the return path for a newly forked child process
-# - __switch_to() saved the old current pointer in GR8 for us
-#
-###############################################################################
- .globl ret_from_fork
-ret_from_fork:
- LEDS 0x6100
- call schedule_tail
-
- # fork & co. return 0 to child
- setlos.p #0,gr8
- bra __syscall_exit
-
- .globl ret_from_kernel_thread
-ret_from_kernel_thread:
- lddi.p @(gr28,#REG_GR(8)),gr20
- call schedule_tail
- calll.p @(gr21,gr0)
- or gr20,gr20,gr8
- bra __syscall_exit
-
-###################################################################################################
-#
-# Return to user mode is not as complex as all this looks,
-# but we want the default path for a system call return to
-# go as quickly as possible which is why some of this is
-# less clear than it otherwise should be.
-#
-###################################################################################################
- .balign L1_CACHE_BYTES
- .globl system_call
-system_call:
- LEDS 0x6101
- movsg psr,gr4 ; enable exceptions
- ori gr4,#PSR_ET,gr4
- movgs gr4,psr
-
- sti gr7,@(gr28,#REG_SYSCALLNO)
- sti.p gr8,@(gr28,#REG_ORIG_GR8)
-
- subicc gr7,#nr_syscalls,gr0,icc0
- bnc icc0,#0,__syscall_badsys
-
- ldi @(gr15,#TI_FLAGS),gr4
- andicc gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
- bne icc0,#0,__syscall_trace_entry
-
-__syscall_call:
- slli.p gr7,#2,gr7
- sethi %hi(sys_call_table),gr5
- setlo %lo(sys_call_table),gr5
- ld @(gr5,gr7),gr4
- calll @(gr4,gr0)
-
-
-###############################################################################
-#
-# return to interrupted process
-#
-###############################################################################
-__syscall_exit:
- LEDS 0x6300
-
- # keep current PSR in GR23
- movsg psr,gr23
-
- ldi @(gr28,#REG_PSR),gr22
-
- sti.p gr8,@(gr28,#REG_GR(8)) ; save return value
-
- # rebuild saved psr - execve will change it for init/main.c
- srli gr22,#1,gr5
- andi.p gr22,#~PSR_PS,gr22
- andi gr5,#PSR_PS,gr5
- or gr5,gr22,gr22
- ori.p gr22,#PSR_S,gr22
-
- # make sure we don't miss an interrupt setting need_resched or sigpending between
- # sampling and the RETT
- ori gr23,#PSR_PIL_14,gr23
- movgs gr23,psr
-
- ldi @(gr15,#TI_FLAGS),gr4
- andicc gr4,#_TIF_ALLWORK_MASK,gr0,icc0
- bne icc0,#0,__syscall_exit_work
-
- # restore all registers and return
-__entry_return_direct:
- LEDS 0x6301
-
- andi gr22,#~PSR_ET,gr22
- movgs gr22,psr
-
- ldi @(gr28,#REG_ISR),gr23
- lddi @(gr28,#REG_CCR),gr24
- lddi @(gr28,#REG_LR) ,gr26
- ldi @(gr28,#REG_PC) ,gr21
- ldi @(gr28,#REG_TBR),gr20
-
- movgs gr20,tbr
- movgs gr21,pcsr
- movgs gr23,isr
- movgs gr24,ccr
- movgs gr25,cccr
- movgs gr26,lr
- movgs gr27,lcr
-
- lddi @(gr28,#REG_GNER0),gr4
- movgs gr4,gner0
- movgs gr5,gner1
-
- lddi @(gr28,#REG_IACC0),gr4
- movgs gr4,iacc0h
- movgs gr5,iacc0l
-
- lddi @(gr28,#REG_GR(4)) ,gr4
- lddi @(gr28,#REG_GR(6)) ,gr6
- lddi @(gr28,#REG_GR(8)) ,gr8
- lddi @(gr28,#REG_GR(10)),gr10
- lddi @(gr28,#REG_GR(12)),gr12
- lddi @(gr28,#REG_GR(14)),gr14
- lddi @(gr28,#REG_GR(16)),gr16
- lddi @(gr28,#REG_GR(18)),gr18
- lddi @(gr28,#REG_GR(20)),gr20
- lddi @(gr28,#REG_GR(22)),gr22
- lddi @(gr28,#REG_GR(24)),gr24
- lddi @(gr28,#REG_GR(26)),gr26
- ldi @(gr28,#REG_GR(29)),gr29
- lddi @(gr28,#REG_GR(30)),gr30
-
- # check to see if a debugging return is required
- LEDS 0x67f0
- movsg ccr,gr2
- ldi @(gr28,#REG__STATUS),gr3
- andicc gr3,#REG__STATUS_STEP,gr0,icc0
- bne icc0,#0,__entry_return_singlestep
- movgs gr2,ccr
-
- ldi @(gr28,#REG_SP) ,sp
- lddi @(gr28,#REG_GR(2)) ,gr2
- ldi @(gr28,#REG_GR(28)),gr28
-
- LEDS 0x67fe
-// movsg pcsr,gr31
-// LEDS32
-
-#if 0
- # store the current frame in the workram on the FR451
- movgs gr28,scr2
- sethi.p %hi(0xfe800000),gr28
- setlo %lo(0xfe800000),gr28
-
- stdi gr2,@(gr28,#REG_GR(2))
- stdi gr4,@(gr28,#REG_GR(4))
- stdi gr6,@(gr28,#REG_GR(6))
- stdi gr8,@(gr28,#REG_GR(8))
- stdi gr10,@(gr28,#REG_GR(10))
- stdi gr12,@(gr28,#REG_GR(12))
- stdi gr14,@(gr28,#REG_GR(14))
- stdi gr16,@(gr28,#REG_GR(16))
- stdi gr18,@(gr28,#REG_GR(18))
- stdi gr24,@(gr28,#REG_GR(24))
- stdi gr26,@(gr28,#REG_GR(26))
- sti gr29,@(gr28,#REG_GR(29))
- stdi gr30,@(gr28,#REG_GR(30))
-
- movsg tbr ,gr30
- sti gr30,@(gr28,#REG_TBR)
- movsg pcsr,gr30
- sti gr30,@(gr28,#REG_PC)
- movsg psr ,gr30
- sti gr30,@(gr28,#REG_PSR)
- movsg isr ,gr30
- sti gr30,@(gr28,#REG_ISR)
- movsg ccr ,gr30
- movsg cccr,gr31
- stdi gr30,@(gr28,#REG_CCR)
- movsg lr ,gr30
- movsg lcr ,gr31
- stdi gr30,@(gr28,#REG_LR)
- sti gr0 ,@(gr28,#REG_SYSCALLNO)
- movsg scr2,gr28
-#endif
-
- rett #0
-
- # return via break.S
-__entry_return_singlestep:
- movgs gr2,ccr
- lddi @(gr28,#REG_GR(2)) ,gr2
- ldi @(gr28,#REG_SP) ,sp
- ldi @(gr28,#REG_GR(28)),gr28
- LEDS 0x67ff
- break
- .globl __entry_return_singlestep_breaks_here
-__entry_return_singlestep_breaks_here:
- nop
-
-
-###############################################################################
-#
-# return to a process interrupted in kernel space
-# - we need to consider preemption if that is enabled
-#
-###############################################################################
- .balign L1_CACHE_BYTES
-__entry_return_from_kernel_exception:
- LEDS 0x6302
- movsg psr,gr23
- ori gr23,#PSR_PIL_14,gr23
- movgs gr23,psr
- bra __entry_return_direct
-
- .balign L1_CACHE_BYTES
-__entry_return_from_kernel_interrupt:
- LEDS 0x6303
- movsg psr,gr23
- ori gr23,#PSR_PIL_14,gr23
- movgs gr23,psr
-
-#ifdef CONFIG_PREEMPT
- ldi @(gr15,#TI_PRE_COUNT),gr5
- subicc gr5,#0,gr0,icc0
- beq icc0,#0,__entry_return_direct
-
- subcc gr0,gr0,gr0,icc2 /* set Z and clear C */
- call preempt_schedule_irq
-#endif
- bra __entry_return_direct
-
-
-###############################################################################
-#
-# perform work that needs to be done immediately before resumption
-#
-###############################################################################
- .globl __entry_return_from_user_exception
- .balign L1_CACHE_BYTES
-__entry_return_from_user_exception:
- LEDS 0x6501
-
-__entry_resume_userspace:
- # make sure we don't miss an interrupt setting need_resched or sigpending between
- # sampling and the RETT
- movsg psr,gr23
- ori gr23,#PSR_PIL_14,gr23
- movgs gr23,psr
-
-__entry_return_from_user_interrupt:
- LEDS 0x6402
- ldi @(gr15,#TI_FLAGS),gr4
- andicc gr4,#_TIF_WORK_MASK,gr0,icc0
- beq icc0,#1,__entry_return_direct
-
-__entry_work_pending:
- LEDS 0x6404
- andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
- beq icc0,#1,__entry_work_notifysig
-
-__entry_work_resched:
- LEDS 0x6408
- movsg psr,gr23
- andi gr23,#~PSR_PIL,gr23
- movgs gr23,psr
- call schedule
- movsg psr,gr23
- ori gr23,#PSR_PIL_14,gr23
- movgs gr23,psr
-
- LEDS 0x6401
- ldi @(gr15,#TI_FLAGS),gr4
- andicc gr4,#_TIF_WORK_MASK,gr0,icc0
- beq icc0,#1,__entry_return_direct
- andicc gr4,#_TIF_NEED_RESCHED,gr0,icc0
- bne icc0,#1,__entry_work_resched
-
-__entry_work_notifysig:
- LEDS 0x6410
- ori.p gr4,#0,gr8
- call do_notify_resume
- bra __entry_resume_userspace
-
- # perform syscall entry tracing
-__syscall_trace_entry:
- LEDS 0x6320
- call syscall_trace_entry
-
- lddi.p @(gr28,#REG_GR(8)) ,gr8
- ori gr8,#0,gr7 ; syscall_trace_entry() returned new syscallno
- lddi @(gr28,#REG_GR(10)),gr10
- lddi.p @(gr28,#REG_GR(12)),gr12
-
- subicc gr7,#nr_syscalls,gr0,icc0
- bnc icc0,#0,__syscall_badsys
- bra __syscall_call
-
- # perform syscall exit tracing
-__syscall_exit_work:
- LEDS 0x6340
- andicc gr22,#PSR_PS,gr0,icc1 ; don't handle on return to kernel mode
- andicc.p gr4,#_TIF_SYSCALL_TRACE,gr0,icc0
- bne icc1,#0,__entry_return_direct
- beq icc0,#1,__entry_work_pending
-
- movsg psr,gr23
- andi gr23,#~PSR_PIL,gr23 ; could let syscall_trace_exit() call schedule()
- movgs gr23,psr
-
- call syscall_trace_exit
- bra __entry_resume_userspace
-
-__syscall_badsys:
- LEDS 0x6380
- setlos #-ENOSYS,gr8
- sti gr8,@(gr28,#REG_GR(8)) ; save return value
- bra __entry_resume_userspace
-
-
-###############################################################################
-#
-# syscall vector table
-#
-###############################################################################
- .section .rodata
-ALIGN
- .globl sys_call_table
-sys_call_table:
- .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
- .long sys_exit
- .long sys_fork
- .long sys_read
- .long sys_write
- .long sys_open /* 5 */
- .long sys_close
- .long sys_waitpid
- .long sys_creat
- .long sys_link
- .long sys_unlink /* 10 */
- .long sys_execve
- .long sys_chdir
- .long sys_time
- .long sys_mknod
- .long sys_chmod /* 15 */
- .long sys_lchown16
- .long sys_ni_syscall /* old break syscall holder */
- .long sys_stat
- .long sys_lseek
- .long sys_getpid /* 20 */
- .long sys_mount
- .long sys_oldumount
- .long sys_setuid16
- .long sys_getuid16
- .long sys_ni_syscall // sys_stime /* 25 */
- .long sys_ptrace
- .long sys_alarm
- .long sys_fstat
- .long sys_pause
- .long sys_utime /* 30 */
- .long sys_ni_syscall /* old stty syscall holder */
- .long sys_ni_syscall /* old gtty syscall holder */
- .long sys_access
- .long sys_nice
- .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */
- .long sys_sync
- .long sys_kill
- .long sys_rename
- .long sys_mkdir
- .long sys_rmdir /* 40 */
- .long sys_dup
- .long sys_pipe
- .long sys_times
- .long sys_ni_syscall /* old prof syscall holder */
- .long sys_brk /* 45 */
- .long sys_setgid16
- .long sys_getgid16
- .long sys_ni_syscall // sys_signal
- .long sys_geteuid16
- .long sys_getegid16 /* 50 */
- .long sys_acct
- .long sys_umount /* recycled never used phys( */
- .long sys_ni_syscall /* old lock syscall holder */
- .long sys_ioctl
- .long sys_fcntl /* 55 */
- .long sys_ni_syscall /* old mpx syscall holder */
- .long sys_setpgid
- .long sys_ni_syscall /* old ulimit syscall holder */
- .long sys_ni_syscall /* old old uname syscall */
- .long sys_umask /* 60 */
- .long sys_chroot
- .long sys_ustat
- .long sys_dup2
- .long sys_getppid
- .long sys_getpgrp /* 65 */
- .long sys_setsid
- .long sys_sigaction
- .long sys_ni_syscall // sys_sgetmask
- .long sys_ni_syscall // sys_ssetmask
- .long sys_setreuid16 /* 70 */
- .long sys_setregid16
- .long sys_sigsuspend
- .long sys_ni_syscall // sys_sigpending
- .long sys_sethostname
- .long sys_setrlimit /* 75 */
- .long sys_ni_syscall // sys_old_getrlimit
- .long sys_getrusage
- .long sys_gettimeofday
- .long sys_settimeofday
- .long sys_getgroups16 /* 80 */
- .long sys_setgroups16
- .long sys_ni_syscall /* old_select slot */
- .long sys_symlink
- .long sys_lstat
- .long sys_readlink /* 85 */
- .long sys_uselib
- .long sys_swapon
- .long sys_reboot
- .long sys_ni_syscall // old_readdir
- .long sys_ni_syscall /* 90 */ /* old_mmap slot */
- .long sys_munmap
- .long sys_truncate
- .long sys_ftruncate
- .long sys_fchmod
- .long sys_fchown16 /* 95 */
- .long sys_getpriority
- .long sys_setpriority
- .long sys_ni_syscall /* old profil syscall holder */
- .long sys_statfs
- .long sys_fstatfs /* 100 */
- .long sys_ni_syscall /* ioperm for i386 */
- .long sys_socketcall
- .long sys_syslog
- .long sys_setitimer
- .long sys_getitimer /* 105 */
- .long sys_newstat
- .long sys_newlstat
- .long sys_newfstat
- .long sys_ni_syscall /* obsolete olduname( syscall */
- .long sys_ni_syscall /* iopl for i386 */ /* 110 */
- .long sys_vhangup
- .long sys_ni_syscall /* obsolete idle( syscall */
- .long sys_ni_syscall /* vm86old for i386 */
- .long sys_wait4
- .long sys_swapoff /* 115 */
- .long sys_sysinfo
- .long sys_ipc
- .long sys_fsync
- .long sys_sigreturn
- .long sys_clone /* 120 */
- .long sys_setdomainname
- .long sys_newuname
- .long sys_ni_syscall /* old "cacheflush" */
- .long sys_adjtimex
- .long sys_mprotect /* 125 */
- .long sys_sigprocmask
- .long sys_ni_syscall /* old "create_module" */
- .long sys_init_module
- .long sys_delete_module
- .long sys_ni_syscall /* old "get_kernel_syms" */
- .long sys_quotactl
- .long sys_getpgid
- .long sys_fchdir
- .long sys_bdflush
- .long sys_sysfs /* 135 */
- .long sys_personality
- .long sys_ni_syscall /* for afs_syscall */
- .long sys_setfsuid16
- .long sys_setfsgid16
- .long sys_llseek /* 140 */
- .long sys_getdents
- .long sys_select
- .long sys_flock
- .long sys_msync
- .long sys_readv /* 145 */
- .long sys_writev
- .long sys_getsid
- .long sys_fdatasync
- .long sys_sysctl
- .long sys_mlock /* 150 */
- .long sys_munlock
- .long sys_mlockall
- .long sys_munlockall
- .long sys_sched_setparam
- .long sys_sched_getparam /* 155 */
- .long sys_sched_setscheduler
- .long sys_sched_getscheduler
- .long sys_sched_yield
- .long sys_sched_get_priority_max
- .long sys_sched_get_priority_min /* 160 */
- .long sys_sched_rr_get_interval
- .long sys_nanosleep
- .long sys_mremap
- .long sys_setresuid16
- .long sys_getresuid16 /* 165 */
- .long sys_ni_syscall /* for vm86 */
- .long sys_ni_syscall /* Old sys_query_module */
- .long sys_poll
- .long sys_ni_syscall /* Old nfsservctl */
- .long sys_setresgid16 /* 170 */
- .long sys_getresgid16
- .long sys_prctl
- .long sys_rt_sigreturn
- .long sys_rt_sigaction
- .long sys_rt_sigprocmask /* 175 */
- .long sys_rt_sigpending
- .long sys_rt_sigtimedwait
- .long sys_rt_sigqueueinfo
- .long sys_rt_sigsuspend
- .long sys_pread64 /* 180 */
- .long sys_pwrite64
- .long sys_chown16
- .long sys_getcwd
- .long sys_capget
- .long sys_capset /* 185 */
- .long sys_sigaltstack
- .long sys_sendfile
- .long sys_ni_syscall /* streams1 */
- .long sys_ni_syscall /* streams2 */
- .long sys_vfork /* 190 */
- .long sys_getrlimit
- .long sys_mmap2
- .long sys_truncate64
- .long sys_ftruncate64
- .long sys_stat64 /* 195 */
- .long sys_lstat64
- .long sys_fstat64
- .long sys_lchown
- .long sys_getuid
- .long sys_getgid /* 200 */
- .long sys_geteuid
- .long sys_getegid
- .long sys_setreuid
- .long sys_setregid
- .long sys_getgroups /* 205 */
- .long sys_setgroups
- .long sys_fchown
- .long sys_setresuid
- .long sys_getresuid
- .long sys_setresgid /* 210 */
- .long sys_getresgid
- .long sys_chown
- .long sys_setuid
- .long sys_setgid
- .long sys_setfsuid /* 215 */
- .long sys_setfsgid
- .long sys_pivot_root
- .long sys_mincore
- .long sys_madvise
- .long sys_getdents64 /* 220 */
- .long sys_fcntl64
- .long sys_ni_syscall /* reserved for TUX */
- .long sys_ni_syscall /* Reserved for Security */
- .long sys_gettid
- .long sys_readahead /* 225 */
- .long sys_setxattr
- .long sys_lsetxattr
- .long sys_fsetxattr
- .long sys_getxattr
- .long sys_lgetxattr /* 230 */
- .long sys_fgetxattr
- .long sys_listxattr
- .long sys_llistxattr
- .long sys_flistxattr
- .long sys_removexattr /* 235 */
- .long sys_lremovexattr
- .long sys_fremovexattr
- .long sys_tkill
- .long sys_sendfile64
- .long sys_futex /* 240 */
- .long sys_sched_setaffinity
- .long sys_sched_getaffinity
- .long sys_ni_syscall //sys_set_thread_area
- .long sys_ni_syscall //sys_get_thread_area
- .long sys_io_setup /* 245 */
- .long sys_io_destroy
- .long sys_io_getevents
- .long sys_io_submit
- .long sys_io_cancel
- .long sys_fadvise64 /* 250 */
- .long sys_ni_syscall
- .long sys_exit_group
- .long sys_lookup_dcookie
- .long sys_epoll_create
- .long sys_epoll_ctl /* 255 */
- .long sys_epoll_wait
- .long sys_remap_file_pages
- .long sys_set_tid_address
- .long sys_timer_create
- .long sys_timer_settime /* 260 */
- .long sys_timer_gettime
- .long sys_timer_getoverrun
- .long sys_timer_delete
- .long sys_clock_settime
- .long sys_clock_gettime /* 265 */
- .long sys_clock_getres
- .long sys_clock_nanosleep
- .long sys_statfs64
- .long sys_fstatfs64
- .long sys_tgkill /* 270 */
- .long sys_utimes
- .long sys_fadvise64_64
- .long sys_ni_syscall /* sys_vserver */
- .long sys_mbind
- .long sys_get_mempolicy
- .long sys_set_mempolicy
- .long sys_mq_open
- .long sys_mq_unlink
- .long sys_mq_timedsend
- .long sys_mq_timedreceive /* 280 */
- .long sys_mq_notify
- .long sys_mq_getsetattr
- .long sys_ni_syscall /* reserved for kexec */
- .long sys_waitid
- .long sys_ni_syscall /* 285 */ /* available */
- .long sys_add_key
- .long sys_request_key
- .long sys_keyctl
- .long sys_ioprio_set
- .long sys_ioprio_get /* 290 */
- .long sys_inotify_init
- .long sys_inotify_add_watch
- .long sys_inotify_rm_watch
- .long sys_migrate_pages
- .long sys_openat /* 295 */
- .long sys_mkdirat
- .long sys_mknodat
- .long sys_fchownat
- .long sys_futimesat
- .long sys_fstatat64 /* 300 */
- .long sys_unlinkat
- .long sys_renameat
- .long sys_linkat
- .long sys_symlinkat
- .long sys_readlinkat /* 305 */
- .long sys_fchmodat
- .long sys_faccessat
- .long sys_pselect6
- .long sys_ppoll
- .long sys_unshare /* 310 */
- .long sys_set_robust_list
- .long sys_get_robust_list
- .long sys_splice
- .long sys_sync_file_range
- .long sys_tee /* 315 */
- .long sys_vmsplice
- .long sys_move_pages
- .long sys_getcpu
- .long sys_epoll_pwait
- .long sys_utimensat /* 320 */
- .long sys_signalfd
- .long sys_timerfd_create
- .long sys_eventfd
- .long sys_fallocate
- .long sys_timerfd_settime /* 325 */
- .long sys_timerfd_gettime
- .long sys_signalfd4
- .long sys_eventfd2
- .long sys_epoll_create1
- .long sys_dup3 /* 330 */
- .long sys_pipe2
- .long sys_inotify_init1
- .long sys_preadv
- .long sys_pwritev
- .long sys_rt_tgsigqueueinfo /* 335 */
- .long sys_perf_event_open
- .long sys_setns
-
-syscall_table_size = (. - sys_call_table)
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/module.h>
-#include <linux/linkage.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/user.h>
-#include <linux/elfcore.h>
-#include <linux/in6.h>
-#include <linux/interrupt.h>
-
-#include <asm/setup.h>
-#include <asm/pgalloc.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/checksum.h>
-#include <asm/hardirq.h>
-#include <asm/cacheflush.h>
-
-extern long __memcpy_user(void *dst, const void *src, size_t count);
-extern long __memset_user(void *dst, const void *src, size_t count);
-
-/* platform dependent support */
-
-EXPORT_SYMBOL(__ioremap);
-EXPORT_SYMBOL(iounmap);
-
-EXPORT_SYMBOL(ip_fast_csum);
-
-#if 0
-EXPORT_SYMBOL(local_irq_count);
-EXPORT_SYMBOL(local_bh_count);
-#endif
-
-EXPORT_SYMBOL(__res_bus_clock_speed_HZ);
-EXPORT_SYMBOL(__page_offset);
-EXPORT_SYMBOL(__memcpy_user);
-EXPORT_SYMBOL(__memset_user);
-EXPORT_SYMBOL(frv_dcache_writeback);
-EXPORT_SYMBOL(frv_cache_invalidate);
-EXPORT_SYMBOL(frv_icache_invalidate);
-EXPORT_SYMBOL(frv_cache_wback_inv);
-
-#ifndef CONFIG_MMU
-EXPORT_SYMBOL(memory_start);
-EXPORT_SYMBOL(memory_end);
-#endif
-
-EXPORT_SYMBOL(__debug_bug_trap);
-
-/* The following are special because they're not called
- explicitly (the C compiler generates them). Fortunately,
- their interface isn't gonna change any time soon now, so
- it's OK to leave it out of version control. */
-EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(memset);
-
-EXPORT_SYMBOL(__outsl_ns);
-EXPORT_SYMBOL(__insl_ns);
-
-#ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
-EXPORT_SYMBOL(__xchg_32);
-EXPORT_SYMBOL(__cmpxchg_32);
-#endif
-EXPORT_SYMBOL(atomic64_add_return);
-EXPORT_SYMBOL(atomic64_sub_return);
-EXPORT_SYMBOL(__xchg_64);
-EXPORT_SYMBOL(__cmpxchg_64);
-
-EXPORT_SYMBOL(__debug_bug_printk);
-EXPORT_SYMBOL(__delay_loops_MHz);
-
-/*
- * libgcc functions - functions that are used internally by the
- * compiler... (prototypes are not correct though, but that
- * doesn't really matter since they're not versioned).
- */
-extern void __gcc_bcmp(void);
-extern void __ashldi3(void);
-extern void __ashrdi3(void);
-extern void __cmpdi2(void);
-extern void __divdi3(void);
-extern void __lshrdi3(void);
-extern void __moddi3(void);
-extern void __muldi3(void);
-extern void __mulll(void);
-extern void __umulll(void);
-extern void __negdi2(void);
-extern void __ucmpdi2(void);
-extern void __udivdi3(void);
-extern void __udivmoddi4(void);
-extern void __umoddi3(void);
-
- /* gcc lib functions */
-//EXPORT_SYMBOL(__gcc_bcmp);
-EXPORT_SYMBOL(__ashldi3);
-EXPORT_SYMBOL(__ashrdi3);
-//EXPORT_SYMBOL(__cmpdi2);
-//EXPORT_SYMBOL(__divdi3);
-EXPORT_SYMBOL(__lshrdi3);
-//EXPORT_SYMBOL(__moddi3);
-EXPORT_SYMBOL(__muldi3);
-EXPORT_SYMBOL(__mulll);
-EXPORT_SYMBOL(__umulll);
-EXPORT_SYMBOL(__negdi2);
-EXPORT_SYMBOL(__ucmpdi2);
-//EXPORT_SYMBOL(__udivdi3);
-//EXPORT_SYMBOL(__udivmoddi4);
-//EXPORT_SYMBOL(__umoddi3);
+++ /dev/null
-/* futex.c: futex operations
- *
- * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/futex.h>
-#include <linux/uaccess.h>
-#include <asm/futex.h>
-#include <asm/errno.h>
-
-/*
- * the various futex operations; MMU fault checking is ignored under no-MMU
- * conditions
- */
-static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr, int *_oldval)
-{
- int oldval, ret;
-
- asm("0: \n"
- " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
- " ckeq icc3,cc7 \n"
- "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
- " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
- "2: cst.p %3,%M0 ,cc3,#1 \n"
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
- " beq icc3,#0,0b \n"
- " setlos 0,%2 \n"
- "3: \n"
- ".subsection 2 \n"
- "4: setlos %5,%2 \n"
- " bra 3b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .balign 8 \n"
- " .long 1b,4b \n"
- " .long 2b,4b \n"
- ".previous"
- : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
- : "3"(oparg), "i"(-EFAULT)
- : "memory", "cc7", "cc3", "icc3"
- );
-
- *_oldval = oldval;
- return ret;
-}
-
-static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr, int *_oldval)
-{
- int oldval, ret;
-
- asm("0: \n"
- " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
- " ckeq icc3,cc7 \n"
- "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
- " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
- " add %1,%3,%3 \n"
- "2: cst.p %3,%M0 ,cc3,#1 \n"
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
- " beq icc3,#0,0b \n"
- " setlos 0,%2 \n"
- "3: \n"
- ".subsection 2 \n"
- "4: setlos %5,%2 \n"
- " bra 3b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .balign 8 \n"
- " .long 1b,4b \n"
- " .long 2b,4b \n"
- ".previous"
- : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
- : "3"(oparg), "i"(-EFAULT)
- : "memory", "cc7", "cc3", "icc3"
- );
-
- *_oldval = oldval;
- return ret;
-}
-
-static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr, int *_oldval)
-{
- int oldval, ret;
-
- asm("0: \n"
- " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
- " ckeq icc3,cc7 \n"
- "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
- " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
- " or %1,%3,%3 \n"
- "2: cst.p %3,%M0 ,cc3,#1 \n"
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
- " beq icc3,#0,0b \n"
- " setlos 0,%2 \n"
- "3: \n"
- ".subsection 2 \n"
- "4: setlos %5,%2 \n"
- " bra 3b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .balign 8 \n"
- " .long 1b,4b \n"
- " .long 2b,4b \n"
- ".previous"
- : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
- : "3"(oparg), "i"(-EFAULT)
- : "memory", "cc7", "cc3", "icc3"
- );
-
- *_oldval = oldval;
- return ret;
-}
-
-static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr, int *_oldval)
-{
- int oldval, ret;
-
- asm("0: \n"
- " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
- " ckeq icc3,cc7 \n"
- "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
- " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
- " and %1,%3,%3 \n"
- "2: cst.p %3,%M0 ,cc3,#1 \n"
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
- " beq icc3,#0,0b \n"
- " setlos 0,%2 \n"
- "3: \n"
- ".subsection 2 \n"
- "4: setlos %5,%2 \n"
- " bra 3b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .balign 8 \n"
- " .long 1b,4b \n"
- " .long 2b,4b \n"
- ".previous"
- : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
- : "3"(oparg), "i"(-EFAULT)
- : "memory", "cc7", "cc3", "icc3"
- );
-
- *_oldval = oldval;
- return ret;
-}
-
-static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr, int *_oldval)
-{
- int oldval, ret;
-
- asm("0: \n"
- " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
- " ckeq icc3,cc7 \n"
- "1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
- " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
- " xor %1,%3,%3 \n"
- "2: cst.p %3,%M0 ,cc3,#1 \n"
- " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
- " beq icc3,#0,0b \n"
- " setlos 0,%2 \n"
- "3: \n"
- ".subsection 2 \n"
- "4: setlos %5,%2 \n"
- " bra 3b \n"
- ".previous \n"
- ".section __ex_table,\"a\" \n"
- " .balign 8 \n"
- " .long 1b,4b \n"
- " .long 2b,4b \n"
- ".previous"
- : "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
- : "3"(oparg), "i"(-EFAULT)
- : "memory", "cc7", "cc3", "icc3"
- );
-
- *_oldval = oldval;
- return ret;
-}
-
-/*****************************************************************************/
-/*
- * do the futex operations
- */
-int arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
-{
- int oldval = 0, ret;
-
- pagefault_disable();
-
- switch (op) {
- case FUTEX_OP_SET:
- ret = atomic_futex_op_xchg_set(oparg, uaddr, &oldval);
- break;
- case FUTEX_OP_ADD:
- ret = atomic_futex_op_xchg_add(oparg, uaddr, &oldval);
- break;
- case FUTEX_OP_OR:
- ret = atomic_futex_op_xchg_or(oparg, uaddr, &oldval);
- break;
- case FUTEX_OP_ANDN:
- ret = atomic_futex_op_xchg_and(~oparg, uaddr, &oldval);
- break;
- case FUTEX_OP_XOR:
- ret = atomic_futex_op_xchg_xor(oparg, uaddr, &oldval);
- break;
- default:
- ret = -ENOSYS;
- break;
- }
-
- pagefault_enable();
-
- if (!ret)
- *oval = oldval;
-
- return ret;
-
-} /* end arch_futex_atomic_op_inuser() */
+++ /dev/null
-/* gdb-io.c: FR403 GDB stub I/O
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/serial_reg.h>
-
-#include <asm/pgtable.h>
-#include <asm/irc-regs.h>
-#include <asm/timer-regs.h>
-#include <asm/gdb-stub.h>
-#include "gdb-io.h"
-
-#ifdef CONFIG_GDBSTUB_UART0
-#define __UART(X) (*(volatile uint8_t *)(UART0_BASE + (UART_##X)))
-#define __UART_IRR_NMI 0xff0f0000
-#else /* CONFIG_GDBSTUB_UART1 */
-#define __UART(X) (*(volatile uint8_t *)(UART1_BASE + (UART_##X)))
-#define __UART_IRR_NMI 0xfff00000
-#endif
-
-#define LSR_WAIT_FOR(STATE) \
-do { \
- gdbstub_do_rx(); \
-} while (!(__UART(LSR) & UART_LSR_##STATE))
-
-#define FLOWCTL_QUERY(LINE) ({ __UART(MSR) & UART_MSR_##LINE; })
-#define FLOWCTL_CLEAR(LINE) do { __UART(MCR) &= ~UART_MCR_##LINE; mb(); } while (0)
-#define FLOWCTL_SET(LINE) do { __UART(MCR) |= UART_MCR_##LINE; mb(); } while (0)
-
-#define FLOWCTL_WAIT_FOR(LINE) \
-do { \
- gdbstub_do_rx(); \
-} while(!FLOWCTL_QUERY(LINE))
-
-/*****************************************************************************/
-/*
- * initialise the GDB stub
- * - called with PSR.ET==0, so can't incur external interrupts
- */
-void gdbstub_io_init(void)
-{
- /* set up the serial port */
- __UART(LCR) = UART_LCR_WLEN8; /* 1N8 */
- __UART(FCR) =
- UART_FCR_ENABLE_FIFO |
- UART_FCR_CLEAR_RCVR |
- UART_FCR_CLEAR_XMIT |
- UART_FCR_TRIGGER_1;
-
- FLOWCTL_CLEAR(DTR);
- FLOWCTL_SET(RTS);
-
-// gdbstub_set_baud(115200);
-
- /* we want to get serial receive interrupts */
- __UART(IER) = UART_IER_RDI | UART_IER_RLSI;
- mb();
-
- __set_IRR(6, __UART_IRR_NMI); /* map ERRs and UARTx to NMI */
-
-} /* end gdbstub_io_init() */
-
-/*****************************************************************************/
-/*
- * set up the GDB stub serial port baud rate timers
- */
-void gdbstub_set_baud(unsigned baud)
-{
- unsigned value, high, low;
- u8 lcr;
-
- /* work out the divisor to give us the nearest higher baud rate */
- value = __serial_clock_speed_HZ / 16 / baud;
-
- /* determine the baud rate range */
- high = __serial_clock_speed_HZ / 16 / value;
- low = __serial_clock_speed_HZ / 16 / (value + 1);
-
- /* pick the nearest bound */
- if (low + (high - low) / 2 > baud)
- value++;
-
- lcr = __UART(LCR);
- __UART(LCR) |= UART_LCR_DLAB;
- mb();
- __UART(DLL) = value & 0xff;
- __UART(DLM) = (value >> 8) & 0xff;
- mb();
- __UART(LCR) = lcr;
- mb();
-
-} /* end gdbstub_set_baud() */
-
-/*****************************************************************************/
-/*
- * receive characters into the receive FIFO
- */
-void gdbstub_do_rx(void)
-{
- unsigned ix, nix;
-
- ix = gdbstub_rx_inp;
-
- while (__UART(LSR) & UART_LSR_DR) {
- nix = (ix + 2) & 0xfff;
- if (nix == gdbstub_rx_outp)
- break;
-
- gdbstub_rx_buffer[ix++] = __UART(LSR);
- gdbstub_rx_buffer[ix++] = __UART(RX);
- ix = nix;
- }
-
- gdbstub_rx_inp = ix;
-
- __clr_RC(15);
- __clr_IRL();
-
-} /* end gdbstub_do_rx() */
-
-/*****************************************************************************/
-/*
- * wait for a character to come from the debugger
- */
-int gdbstub_rx_char(unsigned char *_ch, int nonblock)
-{
- unsigned ix;
- u8 ch, st;
-
- *_ch = 0xff;
-
- if (gdbstub_rx_unget) {
- *_ch = gdbstub_rx_unget;
- gdbstub_rx_unget = 0;
- return 0;
- }
-
- try_again:
- gdbstub_do_rx();
-
- /* pull chars out of the buffer */
- ix = gdbstub_rx_outp;
- if (ix == gdbstub_rx_inp) {
- if (nonblock)
- return -EAGAIN;
- //watchdog_alert_counter = 0;
- goto try_again;
- }
-
- st = gdbstub_rx_buffer[ix++];
- ch = gdbstub_rx_buffer[ix++];
- gdbstub_rx_outp = ix & 0x00000fff;
-
- if (st & UART_LSR_BI) {
- gdbstub_proto("### GDB Rx Break Detected ###\n");
- return -EINTR;
- }
- else if (st & (UART_LSR_FE|UART_LSR_OE|UART_LSR_PE)) {
- gdbstub_io("### GDB Rx Error (st=%02x) ###\n",st);
- return -EIO;
- }
- else {
- gdbstub_io("### GDB Rx %02x (st=%02x) ###\n",ch,st);
- *_ch = ch & 0x7f;
- return 0;
- }
-
-} /* end gdbstub_rx_char() */
-
-/*****************************************************************************/
-/*
- * send a character to the debugger
- */
-void gdbstub_tx_char(unsigned char ch)
-{
- FLOWCTL_SET(DTR);
- LSR_WAIT_FOR(THRE);
-// FLOWCTL_WAIT_FOR(CTS);
-
- if (ch == 0x0a) {
- __UART(TX) = 0x0d;
- mb();
- LSR_WAIT_FOR(THRE);
-// FLOWCTL_WAIT_FOR(CTS);
- }
- __UART(TX) = ch;
- mb();
-
- FLOWCTL_CLEAR(DTR);
-} /* end gdbstub_tx_char() */
-
-/*****************************************************************************/
-/*
- * send a character to the debugger
- */
-void gdbstub_tx_flush(void)
-{
- LSR_WAIT_FOR(TEMT);
- LSR_WAIT_FOR(THRE);
- FLOWCTL_CLEAR(DTR);
-} /* end gdbstub_tx_flush() */
+++ /dev/null
-/* gdb-io.h: FR403 GDB I/O port defs
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _GDB_IO_H
-#define _GDB_IO_H
-
-#include <asm/serial-regs.h>
-
-#undef UART_RX
-#undef UART_TX
-#undef UART_DLL
-#undef UART_DLM
-#undef UART_IER
-#undef UART_IIR
-#undef UART_FCR
-#undef UART_LCR
-#undef UART_MCR
-#undef UART_LSR
-#undef UART_MSR
-#undef UART_SCR
-
-#define UART_RX 0*8 /* In: Receive buffer (DLAB=0) */
-#define UART_TX 0*8 /* Out: Transmit buffer (DLAB=0) */
-#define UART_DLL 0*8 /* Out: Divisor Latch Low (DLAB=1) */
-#define UART_DLM 1*8 /* Out: Divisor Latch High (DLAB=1) */
-#define UART_IER 1*8 /* Out: Interrupt Enable Register */
-#define UART_IIR 2*8 /* In: Interrupt ID Register */
-#define UART_FCR 2*8 /* Out: FIFO Control Register */
-#define UART_LCR 3*8 /* Out: Line Control Register */
-#define UART_MCR 4*8 /* Out: Modem Control Register */
-#define UART_LSR 5*8 /* In: Line Status Register */
-#define UART_MSR 6*8 /* In: Modem Status Register */
-#define UART_SCR 7*8 /* I/O: Scratch Register */
-
-#define UART_LCR_DLAB 0x80 /* Divisor latch access bit */
-#define UART_LCR_SBC 0x40 /* Set break control */
-#define UART_LCR_SPAR 0x20 /* Stick parity (?) */
-#define UART_LCR_EPAR 0x10 /* Even parity select */
-#define UART_LCR_PARITY 0x08 /* Parity Enable */
-#define UART_LCR_STOP 0x04 /* Stop bits: 0=1 stop bit, 1= 2 stop bits */
-#define UART_LCR_WLEN5 0x00 /* Wordlength: 5 bits */
-#define UART_LCR_WLEN6 0x01 /* Wordlength: 6 bits */
-#define UART_LCR_WLEN7 0x02 /* Wordlength: 7 bits */
-#define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */
-
-
-#endif /* _GDB_IO_H */
+++ /dev/null
-/* gdb-stub.c: FRV GDB stub
- *
- * Copyright (C) 2003,4 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from Linux/MIPS version, Copyright (C) 1995 Andreas Busse
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/*
- * To enable debugger support, two things need to happen. One, a
- * call to set_debug_traps() is necessary in order to allow any breakpoints
- * or error conditions to be properly intercepted and reported to gdb.
- * Two, a breakpoint needs to be generated to begin communication. This
- * is most easily accomplished by a call to breakpoint(). Breakpoint()
- * simulates a breakpoint by executing a BREAK instruction.
- *
- *
- * The following gdb commands are supported:
- *
- * command function Return value
- *
- * g return the value of the CPU registers hex data or ENN
- * G set the value of the CPU registers OK or ENN
- *
- * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
- * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
- *
- * c Resume at current address SNN ( signal NN)
- * cAA..AA Continue at address AA..AA SNN
- *
- * s Step one instruction SNN
- * sAA..AA Step one instruction from AA..AA SNN
- *
- * k kill
- *
- * ? What was the last sigval ? SNN (signal NN)
- *
- * bBB..BB Set baud rate to BB..BB OK or BNN, then sets
- * baud rate
- *
- * All commands and responses are sent with a packet which includes a
- * checksum. A packet consists of
- *
- * $<packet info>#<checksum>.
- *
- * where
- * <packet info> :: <characters representing the command or response>
- * <checksum> :: < two hex digits computed as modulo 256 sum of <packetinfo>>
- *
- * When a packet is received, it is first acknowledged with either '+' or '-'.
- * '+' indicates a successful transfer. '-' indicates a failed transfer.
- *
- * Example:
- *
- * Host: Reply:
- * $m0,10#2a +$00010203040506070809101112131415#42
- *
- *
- * ==============
- * MORE EXAMPLES:
- * ==============
- *
- * For reference -- the following are the steps that one
- * company took (RidgeRun Inc) to get remote gdb debugging
- * going. In this scenario the host machine was a PC and the
- * target platform was a Galileo EVB64120A MIPS evaluation
- * board.
- *
- * Step 1:
- * First download gdb-5.0.tar.gz from the internet.
- * and then build/install the package.
- *
- * Example:
- * $ tar zxf gdb-5.0.tar.gz
- * $ cd gdb-5.0
- * $ ./configure --target=frv-elf-gdb
- * $ make
- * $ frv-elf-gdb
- *
- * Step 2:
- * Configure linux for remote debugging and build it.
- *
- * Example:
- * $ cd ~/linux
- * $ make menuconfig <go to "Kernel Hacking" and turn on remote debugging>
- * $ make vmlinux
- *
- * Step 3:
- * Download the kernel to the remote target and start
- * the kernel running. It will promptly halt and wait
- * for the host gdb session to connect. It does this
- * since the "Kernel Hacking" option has defined
- * CONFIG_REMOTE_DEBUG which in turn enables your calls
- * to:
- * set_debug_traps();
- * breakpoint();
- *
- * Step 4:
- * Start the gdb session on the host.
- *
- * Example:
- * $ frv-elf-gdb vmlinux
- * (gdb) set remotebaud 115200
- * (gdb) target remote /dev/ttyS1
- * ...at this point you are connected to
- * the remote target and can use gdb
- * in the normal fasion. Setting
- * breakpoints, single stepping,
- * printing variables, etc.
- *
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/nmi.h>
-
-#include <asm/asm-offsets.h>
-#include <asm/pgtable.h>
-#include <asm/gdb-stub.h>
-
-#define LEDS(x) do { /* *(u32*)0xe1200004 = ~(x); mb(); */ } while(0)
-
-#undef GDBSTUB_DEBUG_PROTOCOL
-
-extern void debug_to_serial(const char *p, int n);
-extern void gdbstub_console_write(struct console *co, const char *p, unsigned n);
-
-extern volatile uint32_t __break_error_detect[3]; /* ESFR1, ESR15, EAR15 */
-
-struct __debug_amr {
- unsigned long L, P;
-} __attribute__((aligned(8)));
-
-struct __debug_mmu {
- struct {
- unsigned long hsr0, pcsr, esr0, ear0, epcr0;
-#ifdef CONFIG_MMU
- unsigned long tplr, tppr, tpxr, cxnr;
-#endif
- } regs;
-
- struct __debug_amr iamr[16];
- struct __debug_amr damr[16];
-
-#ifdef CONFIG_MMU
- struct __debug_amr tlb[64*2];
-#endif
-};
-
-static struct __debug_mmu __debug_mmu;
-
-/*
- * BUFMAX defines the maximum number of characters in inbound/outbound buffers
- * at least NUMREGBYTES*2 are needed for register packets
- */
-#define BUFMAX 2048
-
-#define BREAK_INSN 0x801000c0 /* use "break" as bkpt */
-
-static const char gdbstub_banner[] = "Linux/FR-V GDB Stub (c) RedHat 2003\n";
-
-volatile u8 gdbstub_rx_buffer[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
-volatile u32 gdbstub_rx_inp = 0;
-volatile u32 gdbstub_rx_outp = 0;
-volatile u8 gdbstub_rx_overflow = 0;
-u8 gdbstub_rx_unget = 0;
-
-/* set with GDB whilst running to permit step through exceptions */
-extern volatile u32 __attribute__((section(".bss"))) gdbstub_trace_through_exceptions;
-
-static char input_buffer[BUFMAX];
-static char output_buffer[BUFMAX];
-
-static const char *regnames[] = {
- "PSR ", "ISR ", "CCR ", "CCCR",
- "LR ", "LCR ", "PC ", "_stt",
- "sys ", "GR8*", "GNE0", "GNE1",
- "IACH", "IACL",
- "TBR ", "SP ", "FP ", "GR3 ",
- "GR4 ", "GR5 ", "GR6 ", "GR7 ",
- "GR8 ", "GR9 ", "GR10", "GR11",
- "GR12", "GR13", "GR14", "GR15",
- "GR16", "GR17", "GR18", "GR19",
- "GR20", "GR21", "GR22", "GR23",
- "GR24", "GR25", "GR26", "GR27",
- "EFRM", "CURR", "GR30", "BFRM"
-};
-
-struct gdbstub_bkpt {
- unsigned long addr; /* address of breakpoint */
- unsigned len; /* size of breakpoint */
- uint32_t originsns[7]; /* original instructions */
-};
-
-static struct gdbstub_bkpt gdbstub_bkpts[256];
-
-/*
- * local prototypes
- */
-
-static void gdbstub_recv_packet(char *buffer);
-static int gdbstub_send_packet(char *buffer);
-static int gdbstub_compute_signal(unsigned long tbr);
-static int hex(unsigned char ch);
-static int hexToInt(char **ptr, unsigned long *intValue);
-static unsigned char *mem2hex(const void *mem, char *buf, int count, int may_fault);
-static char *hex2mem(const char *buf, void *_mem, int count);
-
-/*
- * Convert ch from a hex digit to an int
- */
-static int hex(unsigned char ch)
-{
- if (ch >= 'a' && ch <= 'f')
- return ch-'a'+10;
- if (ch >= '0' && ch <= '9')
- return ch-'0';
- if (ch >= 'A' && ch <= 'F')
- return ch-'A'+10;
- return -1;
-}
-
-void gdbstub_printk(const char *fmt, ...)
-{
- static char buf[1024];
- va_list args;
- int len;
-
- /* Emit the output into the temporary buffer */
- va_start(args, fmt);
- len = vsnprintf(buf, sizeof(buf), fmt, args);
- va_end(args);
- debug_to_serial(buf, len);
-}
-
-static inline char *gdbstub_strcpy(char *dst, const char *src)
-{
- int loop = 0;
- while ((dst[loop] = src[loop]))
- loop++;
- return dst;
-}
-
-static void gdbstub_purge_cache(void)
-{
- asm volatile(" dcef @(gr0,gr0),#1 \n"
- " icei @(gr0,gr0),#1 \n"
- " membar \n"
- " bar \n"
- );
-}
-
-/*****************************************************************************/
-/*
- * scan for the sequence $<data>#<checksum>
- */
-static void gdbstub_recv_packet(char *buffer)
-{
- unsigned char checksum;
- unsigned char xmitcsum;
- unsigned char ch;
- int count, i, ret, error;
-
- for (;;) {
- /* wait around for the start character, ignore all other characters */
- do {
- gdbstub_rx_char(&ch, 0);
- } while (ch != '$');
-
- checksum = 0;
- xmitcsum = -1;
- count = 0;
- error = 0;
-
- /* now, read until a # or end of buffer is found */
- while (count < BUFMAX) {
- ret = gdbstub_rx_char(&ch, 0);
- if (ret < 0)
- error = ret;
-
- if (ch == '#')
- break;
- checksum += ch;
- buffer[count] = ch;
- count++;
- }
-
- if (error == -EIO) {
- gdbstub_proto("### GDB Rx Error - Skipping packet ###\n");
- gdbstub_proto("### GDB Tx NAK\n");
- gdbstub_tx_char('-');
- continue;
- }
-
- if (count >= BUFMAX || error)
- continue;
-
- buffer[count] = 0;
-
- /* read the checksum */
- ret = gdbstub_rx_char(&ch, 0);
- if (ret < 0)
- error = ret;
- xmitcsum = hex(ch) << 4;
-
- ret = gdbstub_rx_char(&ch, 0);
- if (ret < 0)
- error = ret;
- xmitcsum |= hex(ch);
-
- if (error) {
- if (error == -EIO)
- gdbstub_proto("### GDB Rx Error - Skipping packet\n");
- gdbstub_proto("### GDB Tx NAK\n");
- gdbstub_tx_char('-');
- continue;
- }
-
- /* check the checksum */
- if (checksum != xmitcsum) {
- gdbstub_proto("### GDB Tx NAK\n");
- gdbstub_tx_char('-'); /* failed checksum */
- continue;
- }
-
- gdbstub_proto("### GDB Rx '$%s#%02x' ###\n", buffer, checksum);
- gdbstub_proto("### GDB Tx ACK\n");
- gdbstub_tx_char('+'); /* successful transfer */
-
- /* if a sequence char is present, reply the sequence ID */
- if (buffer[2] == ':') {
- gdbstub_tx_char(buffer[0]);
- gdbstub_tx_char(buffer[1]);
-
- /* remove sequence chars from buffer */
- count = 0;
- while (buffer[count]) count++;
- for (i=3; i <= count; i++)
- buffer[i - 3] = buffer[i];
- }
-
- break;
- }
-} /* end gdbstub_recv_packet() */
-
-/*****************************************************************************/
-/*
- * send the packet in buffer.
- * - return 0 if successfully ACK'd
- * - return 1 if abandoned due to new incoming packet
- */
-static int gdbstub_send_packet(char *buffer)
-{
- unsigned char checksum;
- int count;
- unsigned char ch;
-
- /* $<packet info>#<checksum> */
- gdbstub_proto("### GDB Tx '%s' ###\n", buffer);
-
- do {
- gdbstub_tx_char('$');
- checksum = 0;
- count = 0;
-
- while ((ch = buffer[count]) != 0) {
- gdbstub_tx_char(ch);
- checksum += ch;
- count += 1;
- }
-
- gdbstub_tx_char('#');
- gdbstub_tx_char(hex_asc_hi(checksum));
- gdbstub_tx_char(hex_asc_lo(checksum));
-
- } while (gdbstub_rx_char(&ch,0),
-#ifdef GDBSTUB_DEBUG_PROTOCOL
- ch=='-' && (gdbstub_proto("### GDB Rx NAK\n"),0),
- ch!='-' && ch!='+' && (gdbstub_proto("### GDB Rx ??? %02x\n",ch),0),
-#endif
- ch!='+' && ch!='$');
-
- if (ch=='+') {
- gdbstub_proto("### GDB Rx ACK\n");
- return 0;
- }
-
- gdbstub_proto("### GDB Tx Abandoned\n");
- gdbstub_rx_unget = ch;
- return 1;
-} /* end gdbstub_send_packet() */
-
-/*
- * While we find nice hex chars, build an int.
- * Return number of chars processed.
- */
-static int hexToInt(char **ptr, unsigned long *_value)
-{
- int count = 0, ch;
-
- *_value = 0;
- while (**ptr) {
- ch = hex(**ptr);
- if (ch < 0)
- break;
-
- *_value = (*_value << 4) | ((uint8_t) ch & 0xf);
- count++;
-
- (*ptr)++;
- }
-
- return count;
-}
-
-/*****************************************************************************/
-/*
- * probe an address to see whether it maps to anything
- */
-static inline int gdbstub_addr_probe(const void *vaddr)
-{
-#ifdef CONFIG_MMU
- unsigned long paddr;
-
- asm("lrad %1,%0,#1,#0,#0" : "=r"(paddr) : "r"(vaddr));
- if (!(paddr & xAMPRx_V))
- return 0;
-#endif
-
- return 1;
-} /* end gdbstub_addr_probe() */
-
-#ifdef CONFIG_MMU
-static unsigned long __saved_dampr, __saved_damlr;
-
-static inline unsigned long gdbstub_virt_to_pte(unsigned long vaddr)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long val, dampr5;
-
- pgd = (pgd_t *) __get_DAMLR(3) + pgd_index(vaddr);
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
-
- if (pmd_bad(*pmd) || !pmd_present(*pmd))
- return 0;
-
- /* make sure dampr5 maps to the correct pmd */
- dampr5 = __get_DAMPR(5);
- val = pmd_val(*pmd);
- __set_DAMPR(5, val | xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C | xAMPRx_V);
-
- /* now its safe to access pmd */
- pte = (pte_t *)__get_DAMLR(5) + __pte_index(vaddr);
- if (pte_present(*pte))
- val = pte_val(*pte);
- else
- val = 0;
-
- /* restore original dampr5 */
- __set_DAMPR(5, dampr5);
-
- return val;
-}
-#endif
-
-static inline int gdbstub_addr_map(const void *vaddr)
-{
-#ifdef CONFIG_MMU
- unsigned long pte;
-
- __saved_dampr = __get_DAMPR(2);
- __saved_damlr = __get_DAMLR(2);
-#endif
- if (gdbstub_addr_probe(vaddr))
- return 1;
-#ifdef CONFIG_MMU
- pte = gdbstub_virt_to_pte((unsigned long) vaddr);
- if (pte) {
- __set_DAMPR(2, pte);
- __set_DAMLR(2, (unsigned long) vaddr & PAGE_MASK);
- return 1;
- }
-#endif
- return 0;
-}
-
-static inline void gdbstub_addr_unmap(void)
-{
-#ifdef CONFIG_MMU
- __set_DAMPR(2, __saved_dampr);
- __set_DAMLR(2, __saved_damlr);
-#endif
-}
-
-/*
- * access potentially dodgy memory through a potentially dodgy pointer
- */
-static inline int gdbstub_read_dword(const void *addr, uint32_t *_res)
-{
- unsigned long brr;
- uint32_t res;
-
- if (!gdbstub_addr_map(addr))
- return 0;
-
- asm volatile(" movgs gr0,brr \n"
- " ld%I2 %M2,%0 \n"
- " movsg brr,%1 \n"
- : "=r"(res), "=r"(brr)
- : "m"(*(uint32_t *) addr));
- *_res = res;
- gdbstub_addr_unmap();
- return likely(!brr);
-}
-
-static inline int gdbstub_write_dword(void *addr, uint32_t val)
-{
- unsigned long brr;
-
- if (!gdbstub_addr_map(addr))
- return 0;
-
- asm volatile(" movgs gr0,brr \n"
- " st%I2 %1,%M2 \n"
- " movsg brr,%0 \n"
- : "=r"(brr)
- : "r"(val), "m"(*(uint32_t *) addr));
- gdbstub_addr_unmap();
- return likely(!brr);
-}
-
-static inline int gdbstub_read_word(const void *addr, uint16_t *_res)
-{
- unsigned long brr;
- uint16_t res;
-
- if (!gdbstub_addr_map(addr))
- return 0;
-
- asm volatile(" movgs gr0,brr \n"
- " lduh%I2 %M2,%0 \n"
- " movsg brr,%1 \n"
- : "=r"(res), "=r"(brr)
- : "m"(*(uint16_t *) addr));
- *_res = res;
- gdbstub_addr_unmap();
- return likely(!brr);
-}
-
-static inline int gdbstub_write_word(void *addr, uint16_t val)
-{
- unsigned long brr;
-
- if (!gdbstub_addr_map(addr))
- return 0;
-
- asm volatile(" movgs gr0,brr \n"
- " sth%I2 %1,%M2 \n"
- " movsg brr,%0 \n"
- : "=r"(brr)
- : "r"(val), "m"(*(uint16_t *) addr));
- gdbstub_addr_unmap();
- return likely(!brr);
-}
-
-static inline int gdbstub_read_byte(const void *addr, uint8_t *_res)
-{
- unsigned long brr;
- uint8_t res;
-
- if (!gdbstub_addr_map(addr))
- return 0;
-
- asm volatile(" movgs gr0,brr \n"
- " ldub%I2 %M2,%0 \n"
- " movsg brr,%1 \n"
- : "=r"(res), "=r"(brr)
- : "m"(*(uint8_t *) addr));
- *_res = res;
- gdbstub_addr_unmap();
- return likely(!brr);
-}
-
-static inline int gdbstub_write_byte(void *addr, uint8_t val)
-{
- unsigned long brr;
-
- if (!gdbstub_addr_map(addr))
- return 0;
-
- asm volatile(" movgs gr0,brr \n"
- " stb%I2 %1,%M2 \n"
- " movsg brr,%0 \n"
- : "=r"(brr)
- : "r"(val), "m"(*(uint8_t *) addr));
- gdbstub_addr_unmap();
- return likely(!brr);
-}
-
-static void __gdbstub_console_write(struct console *co, const char *p, unsigned n)
-{
- char outbuf[26];
- int qty;
-
- outbuf[0] = 'O';
-
- while (n > 0) {
- qty = 1;
-
- while (n > 0 && qty < 20) {
- mem2hex(p, outbuf + qty, 2, 0);
- qty += 2;
- if (*p == 0x0a) {
- outbuf[qty++] = '0';
- outbuf[qty++] = 'd';
- }
- p++;
- n--;
- }
-
- outbuf[qty] = 0;
- gdbstub_send_packet(outbuf);
- }
-}
-
-#if 0
-void debug_to_serial(const char *p, int n)
-{
- gdbstub_console_write(NULL,p,n);
-}
-#endif
-
-#ifdef CONFIG_GDB_CONSOLE
-
-static struct console gdbstub_console = {
- .name = "gdb",
- .write = gdbstub_console_write, /* in break.S */
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-#endif
-
-/*****************************************************************************/
-/*
- * Convert the memory pointed to by mem into hex, placing result in buf.
- * - if successful, return a pointer to the last char put in buf (NUL)
- * - in case of mem fault, return NULL
- * may_fault is non-zero if we are reading from arbitrary memory, but is currently
- * not used.
- */
-static unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault)
-{
- const uint8_t *mem = _mem;
- uint8_t ch[4] __attribute__((aligned(4)));
-
- if ((uint32_t)mem&1 && count>=1) {
- if (!gdbstub_read_byte(mem,ch))
- return NULL;
- buf = hex_byte_pack(buf, ch[0]);
- mem++;
- count--;
- }
-
- if ((uint32_t)mem&3 && count>=2) {
- if (!gdbstub_read_word(mem,(uint16_t *)ch))
- return NULL;
- buf = hex_byte_pack(buf, ch[0]);
- buf = hex_byte_pack(buf, ch[1]);
- mem += 2;
- count -= 2;
- }
-
- while (count>=4) {
- if (!gdbstub_read_dword(mem,(uint32_t *)ch))
- return NULL;
- buf = hex_byte_pack(buf, ch[0]);
- buf = hex_byte_pack(buf, ch[1]);
- buf = hex_byte_pack(buf, ch[2]);
- buf = hex_byte_pack(buf, ch[3]);
- mem += 4;
- count -= 4;
- }
-
- if (count>=2) {
- if (!gdbstub_read_word(mem,(uint16_t *)ch))
- return NULL;
- buf = hex_byte_pack(buf, ch[0]);
- buf = hex_byte_pack(buf, ch[1]);
- mem += 2;
- count -= 2;
- }
-
- if (count>=1) {
- if (!gdbstub_read_byte(mem,ch))
- return NULL;
- buf = hex_byte_pack(buf, ch[0]);
- }
-
- *buf = 0;
-
- return buf;
-} /* end mem2hex() */
-
-/*****************************************************************************/
-/*
- * convert the hex array pointed to by buf into binary to be placed in mem
- * return a pointer to the character AFTER the last byte of buffer consumed
- */
-static char *hex2mem(const char *buf, void *_mem, int count)
-{
- uint8_t *mem = _mem;
- union {
- uint32_t l;
- uint16_t w;
- uint8_t b[4];
- } ch;
-
- if ((u32)mem&1 && count>=1) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- if (!gdbstub_write_byte(mem,ch.b[0]))
- return NULL;
- mem++;
- count--;
- }
-
- if ((u32)mem&3 && count>=2) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- ch.b[1] = hex(*buf++) << 4;
- ch.b[1] |= hex(*buf++);
- if (!gdbstub_write_word(mem,ch.w))
- return NULL;
- mem += 2;
- count -= 2;
- }
-
- while (count>=4) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- ch.b[1] = hex(*buf++) << 4;
- ch.b[1] |= hex(*buf++);
- ch.b[2] = hex(*buf++) << 4;
- ch.b[2] |= hex(*buf++);
- ch.b[3] = hex(*buf++) << 4;
- ch.b[3] |= hex(*buf++);
- if (!gdbstub_write_dword(mem,ch.l))
- return NULL;
- mem += 4;
- count -= 4;
- }
-
- if (count>=2) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- ch.b[1] = hex(*buf++) << 4;
- ch.b[1] |= hex(*buf++);
- if (!gdbstub_write_word(mem,ch.w))
- return NULL;
- mem += 2;
- count -= 2;
- }
-
- if (count>=1) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- if (!gdbstub_write_byte(mem,ch.b[0]))
- return NULL;
- }
-
- return (char *) buf;
-} /* end hex2mem() */
-
-/*****************************************************************************/
-/*
- * This table contains the mapping between FRV TBR.TT exception codes,
- * and signals, which are primarily what GDB understands. It also
- * indicates which hardware traps we need to commandeer when
- * initializing the stub.
- */
-static const struct brr_to_sig_map {
- unsigned long brr_mask; /* BRR bitmask */
- unsigned long tbr_tt; /* TBR.TT code (in BRR.EBTT) */
- unsigned int signo; /* Signal that we map this into */
-} brr_to_sig_map[] = {
- { BRR_EB, TBR_TT_INSTR_ACC_ERROR, SIGSEGV },
- { BRR_EB, TBR_TT_ILLEGAL_INSTR, SIGILL },
- { BRR_EB, TBR_TT_PRIV_INSTR, SIGILL },
- { BRR_EB, TBR_TT_MP_EXCEPTION, SIGFPE },
- { BRR_EB, TBR_TT_DATA_ACC_ERROR, SIGSEGV },
- { BRR_EB, TBR_TT_DATA_STR_ERROR, SIGSEGV },
- { BRR_EB, TBR_TT_DIVISION_EXCEP, SIGFPE },
- { BRR_EB, TBR_TT_COMPOUND_EXCEP, SIGSEGV },
- { BRR_EB, TBR_TT_INTERRUPT_13, SIGALRM }, /* watchdog */
- { BRR_EB, TBR_TT_INTERRUPT_14, SIGINT }, /* GDB serial */
- { BRR_EB, TBR_TT_INTERRUPT_15, SIGQUIT }, /* NMI */
- { BRR_CB, 0, SIGUSR1 },
- { BRR_TB, 0, SIGUSR2 },
- { BRR_DBNEx, 0, SIGTRAP },
- { BRR_DBx, 0, SIGTRAP }, /* h/w watchpoint */
- { BRR_IBx, 0, SIGTRAP }, /* h/w breakpoint */
- { BRR_CBB, 0, SIGTRAP },
- { BRR_SB, 0, SIGTRAP },
- { BRR_ST, 0, SIGTRAP }, /* single step */
- { 0, 0, SIGHUP } /* default */
-};
-
-/*****************************************************************************/
-/*
- * convert the FRV BRR register contents into a UNIX signal number
- */
-static inline int gdbstub_compute_signal(unsigned long brr)
-{
- const struct brr_to_sig_map *map;
- unsigned long tbr = (brr & BRR_EBTT) >> 12;
-
- for (map = brr_to_sig_map; map->brr_mask; map++)
- if (map->brr_mask & brr)
- if (!map->tbr_tt || map->tbr_tt == tbr)
- break;
-
- return map->signo;
-} /* end gdbstub_compute_signal() */
-
-/*****************************************************************************/
-/*
- * set a software breakpoint or a hardware breakpoint or watchpoint
- */
-static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsigned long len)
-{
- unsigned long tmp;
- int bkpt, loop, xloop;
-
- union {
- struct {
- unsigned long mask0, mask1;
- };
- uint8_t bytes[8];
- } dbmr;
-
- //gdbstub_printk("setbkpt(%ld,%08lx,%ld)\n", type, addr, len);
-
- switch (type) {
- /* set software breakpoint */
- case 0:
- if (addr & 3 || len > 7*4)
- return -EINVAL;
-
- for (bkpt = 255; bkpt >= 0; bkpt--)
- if (!gdbstub_bkpts[bkpt].addr)
- break;
- if (bkpt < 0)
- return -ENOSPC;
-
- for (loop = 0; loop < len/4; loop++)
- if (!gdbstub_read_dword(&((uint32_t *) addr)[loop],
- &gdbstub_bkpts[bkpt].originsns[loop]))
- return -EFAULT;
-
- for (loop = 0; loop < len/4; loop++)
- if (!gdbstub_write_dword(&((uint32_t *) addr)[loop],
- BREAK_INSN)
- ) {
- /* need to undo the changes if possible */
- for (xloop = 0; xloop < loop; xloop++)
- gdbstub_write_dword(&((uint32_t *) addr)[xloop],
- gdbstub_bkpts[bkpt].originsns[xloop]);
- return -EFAULT;
- }
-
- gdbstub_bkpts[bkpt].addr = addr;
- gdbstub_bkpts[bkpt].len = len;
-
-#if 0
- gdbstub_printk("Set BKPT[%02x]: %08lx #%d {%04x, %04x} -> { %04x, %04x }\n",
- bkpt,
- gdbstub_bkpts[bkpt].addr,
- gdbstub_bkpts[bkpt].len,
- gdbstub_bkpts[bkpt].originsns[0],
- gdbstub_bkpts[bkpt].originsns[1],
- ((uint32_t *) addr)[0],
- ((uint32_t *) addr)[1]
- );
-#endif
- return 0;
-
- /* set hardware breakpoint */
- case 1:
- if (addr & 3 || len != 4)
- return -EINVAL;
-
- if (!(__debug_regs->dcr & DCR_IBE0)) {
- //gdbstub_printk("set h/w break 0: %08lx\n", addr);
- __debug_regs->dcr |= DCR_IBE0;
- __debug_regs->ibar[0] = addr;
- asm volatile("movgs %0,ibar0" : : "r"(addr));
- return 0;
- }
-
- if (!(__debug_regs->dcr & DCR_IBE1)) {
- //gdbstub_printk("set h/w break 1: %08lx\n", addr);
- __debug_regs->dcr |= DCR_IBE1;
- __debug_regs->ibar[1] = addr;
- asm volatile("movgs %0,ibar1" : : "r"(addr));
- return 0;
- }
-
- if (!(__debug_regs->dcr & DCR_IBE2)) {
- //gdbstub_printk("set h/w break 2: %08lx\n", addr);
- __debug_regs->dcr |= DCR_IBE2;
- __debug_regs->ibar[2] = addr;
- asm volatile("movgs %0,ibar2" : : "r"(addr));
- return 0;
- }
-
- if (!(__debug_regs->dcr & DCR_IBE3)) {
- //gdbstub_printk("set h/w break 3: %08lx\n", addr);
- __debug_regs->dcr |= DCR_IBE3;
- __debug_regs->ibar[3] = addr;
- asm volatile("movgs %0,ibar3" : : "r"(addr));
- return 0;
- }
-
- return -ENOSPC;
-
- /* set data read/write/access watchpoint */
- case 2:
- case 3:
- case 4:
- if ((addr & ~7) != ((addr + len - 1) & ~7))
- return -EINVAL;
-
- tmp = addr & 7;
-
- memset(dbmr.bytes, 0xff, sizeof(dbmr.bytes));
- for (loop = 0; loop < len; loop++)
- dbmr.bytes[tmp + loop] = 0;
-
- addr &= ~7;
-
- if (!(__debug_regs->dcr & (DCR_DRBE0|DCR_DWBE0))) {
- //gdbstub_printk("set h/w watchpoint 0 type %ld: %08lx\n", type, addr);
- tmp = type==2 ? DCR_DWBE0 : type==3 ? DCR_DRBE0 : DCR_DRBE0|DCR_DWBE0;
-
- __debug_regs->dcr |= tmp;
- __debug_regs->dbar[0] = addr;
- __debug_regs->dbmr[0][0] = dbmr.mask0;
- __debug_regs->dbmr[0][1] = dbmr.mask1;
- __debug_regs->dbdr[0][0] = 0;
- __debug_regs->dbdr[0][1] = 0;
-
- asm volatile(" movgs %0,dbar0 \n"
- " movgs %1,dbmr00 \n"
- " movgs %2,dbmr01 \n"
- " movgs gr0,dbdr00 \n"
- " movgs gr0,dbdr01 \n"
- : : "r"(addr), "r"(dbmr.mask0), "r"(dbmr.mask1));
- return 0;
- }
-
- if (!(__debug_regs->dcr & (DCR_DRBE1|DCR_DWBE1))) {
- //gdbstub_printk("set h/w watchpoint 1 type %ld: %08lx\n", type, addr);
- tmp = type==2 ? DCR_DWBE1 : type==3 ? DCR_DRBE1 : DCR_DRBE1|DCR_DWBE1;
-
- __debug_regs->dcr |= tmp;
- __debug_regs->dbar[1] = addr;
- __debug_regs->dbmr[1][0] = dbmr.mask0;
- __debug_regs->dbmr[1][1] = dbmr.mask1;
- __debug_regs->dbdr[1][0] = 0;
- __debug_regs->dbdr[1][1] = 0;
-
- asm volatile(" movgs %0,dbar1 \n"
- " movgs %1,dbmr10 \n"
- " movgs %2,dbmr11 \n"
- " movgs gr0,dbdr10 \n"
- " movgs gr0,dbdr11 \n"
- : : "r"(addr), "r"(dbmr.mask0), "r"(dbmr.mask1));
- return 0;
- }
-
- return -ENOSPC;
-
- default:
- return -EINVAL;
- }
-
-} /* end gdbstub_set_breakpoint() */
-
-/*****************************************************************************/
-/*
- * clear a breakpoint or watchpoint
- */
-int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned long len)
-{
- unsigned long tmp;
- int bkpt, loop;
-
- union {
- struct {
- unsigned long mask0, mask1;
- };
- uint8_t bytes[8];
- } dbmr;
-
- //gdbstub_printk("clearbkpt(%ld,%08lx,%ld)\n", type, addr, len);
-
- switch (type) {
- /* clear software breakpoint */
- case 0:
- for (bkpt = 255; bkpt >= 0; bkpt--)
- if (gdbstub_bkpts[bkpt].addr == addr && gdbstub_bkpts[bkpt].len == len)
- break;
- if (bkpt < 0)
- return -ENOENT;
-
- gdbstub_bkpts[bkpt].addr = 0;
-
- for (loop = 0; loop < len/4; loop++)
- if (!gdbstub_write_dword(&((uint32_t *) addr)[loop],
- gdbstub_bkpts[bkpt].originsns[loop]))
- return -EFAULT;
- return 0;
-
- /* clear hardware breakpoint */
- case 1:
- if (addr & 3 || len != 4)
- return -EINVAL;
-
-#define __get_ibar(X) ({ unsigned long x; asm volatile("movsg ibar"#X",%0" : "=r"(x)); x; })
-
- if (__debug_regs->dcr & DCR_IBE0 && __get_ibar(0) == addr) {
- //gdbstub_printk("clear h/w break 0: %08lx\n", addr);
- __debug_regs->dcr &= ~DCR_IBE0;
- __debug_regs->ibar[0] = 0;
- asm volatile("movgs gr0,ibar0");
- return 0;
- }
-
- if (__debug_regs->dcr & DCR_IBE1 && __get_ibar(1) == addr) {
- //gdbstub_printk("clear h/w break 1: %08lx\n", addr);
- __debug_regs->dcr &= ~DCR_IBE1;
- __debug_regs->ibar[1] = 0;
- asm volatile("movgs gr0,ibar1");
- return 0;
- }
-
- if (__debug_regs->dcr & DCR_IBE2 && __get_ibar(2) == addr) {
- //gdbstub_printk("clear h/w break 2: %08lx\n", addr);
- __debug_regs->dcr &= ~DCR_IBE2;
- __debug_regs->ibar[2] = 0;
- asm volatile("movgs gr0,ibar2");
- return 0;
- }
-
- if (__debug_regs->dcr & DCR_IBE3 && __get_ibar(3) == addr) {
- //gdbstub_printk("clear h/w break 3: %08lx\n", addr);
- __debug_regs->dcr &= ~DCR_IBE3;
- __debug_regs->ibar[3] = 0;
- asm volatile("movgs gr0,ibar3");
- return 0;
- }
-
- return -EINVAL;
-
- /* clear data read/write/access watchpoint */
- case 2:
- case 3:
- case 4:
- if ((addr & ~7) != ((addr + len - 1) & ~7))
- return -EINVAL;
-
- tmp = addr & 7;
-
- memset(dbmr.bytes, 0xff, sizeof(dbmr.bytes));
- for (loop = 0; loop < len; loop++)
- dbmr.bytes[tmp + loop] = 0;
-
- addr &= ~7;
-
-#define __get_dbar(X) ({ unsigned long x; asm volatile("movsg dbar"#X",%0" : "=r"(x)); x; })
-#define __get_dbmr0(X) ({ unsigned long x; asm volatile("movsg dbmr"#X"0,%0" : "=r"(x)); x; })
-#define __get_dbmr1(X) ({ unsigned long x; asm volatile("movsg dbmr"#X"1,%0" : "=r"(x)); x; })
-
- /* consider DBAR 0 */
- tmp = type==2 ? DCR_DWBE0 : type==3 ? DCR_DRBE0 : DCR_DRBE0|DCR_DWBE0;
-
- if ((__debug_regs->dcr & (DCR_DRBE0|DCR_DWBE0)) != tmp ||
- __get_dbar(0) != addr ||
- __get_dbmr0(0) != dbmr.mask0 ||
- __get_dbmr1(0) != dbmr.mask1)
- goto skip_dbar0;
-
- //gdbstub_printk("clear h/w watchpoint 0 type %ld: %08lx\n", type, addr);
- __debug_regs->dcr &= ~(DCR_DRBE0|DCR_DWBE0);
- __debug_regs->dbar[0] = 0;
- __debug_regs->dbmr[0][0] = 0;
- __debug_regs->dbmr[0][1] = 0;
- __debug_regs->dbdr[0][0] = 0;
- __debug_regs->dbdr[0][1] = 0;
-
- asm volatile(" movgs gr0,dbar0 \n"
- " movgs gr0,dbmr00 \n"
- " movgs gr0,dbmr01 \n"
- " movgs gr0,dbdr00 \n"
- " movgs gr0,dbdr01 \n");
- return 0;
-
- skip_dbar0:
- /* consider DBAR 0 */
- tmp = type==2 ? DCR_DWBE1 : type==3 ? DCR_DRBE1 : DCR_DRBE1|DCR_DWBE1;
-
- if ((__debug_regs->dcr & (DCR_DRBE1|DCR_DWBE1)) != tmp ||
- __get_dbar(1) != addr ||
- __get_dbmr0(1) != dbmr.mask0 ||
- __get_dbmr1(1) != dbmr.mask1)
- goto skip_dbar1;
-
- //gdbstub_printk("clear h/w watchpoint 1 type %ld: %08lx\n", type, addr);
- __debug_regs->dcr &= ~(DCR_DRBE1|DCR_DWBE1);
- __debug_regs->dbar[1] = 0;
- __debug_regs->dbmr[1][0] = 0;
- __debug_regs->dbmr[1][1] = 0;
- __debug_regs->dbdr[1][0] = 0;
- __debug_regs->dbdr[1][1] = 0;
-
- asm volatile(" movgs gr0,dbar1 \n"
- " movgs gr0,dbmr10 \n"
- " movgs gr0,dbmr11 \n"
- " movgs gr0,dbdr10 \n"
- " movgs gr0,dbdr11 \n");
- return 0;
-
- skip_dbar1:
- return -ENOSPC;
-
- default:
- return -EINVAL;
- }
-} /* end gdbstub_clear_breakpoint() */
-
-/*****************************************************************************/
-/*
- * check a for an internal software breakpoint, and wind the PC back if necessary
- */
-static void gdbstub_check_breakpoint(void)
-{
- unsigned long addr = __debug_frame->pc - 4;
- int bkpt;
-
- for (bkpt = 255; bkpt >= 0; bkpt--)
- if (gdbstub_bkpts[bkpt].addr == addr)
- break;
- if (bkpt >= 0)
- __debug_frame->pc = addr;
-
- //gdbstub_printk("alter pc [%d] %08lx\n", bkpt, __debug_frame->pc);
-
-} /* end gdbstub_check_breakpoint() */
-
-/*****************************************************************************/
-/*
- *
- */
-static void __maybe_unused gdbstub_show_regs(void)
-{
- unsigned long *reg;
- int loop;
-
- gdbstub_printk("\n");
-
- gdbstub_printk("Frame: @%p [%s]\n",
- __debug_frame,
- __debug_frame->psr & PSR_S ? "kernel" : "user");
-
- reg = (unsigned long *) __debug_frame;
- for (loop = 0; loop < NR_PT_REGS; loop++) {
- printk("%s %08lx", regnames[loop + 0], reg[loop + 0]);
-
- if (loop == NR_PT_REGS - 1 || loop % 5 == 4)
- printk("\n");
- else
- printk(" | ");
- }
-
- gdbstub_printk("Process %s (pid: %d)\n", current->comm, current->pid);
-} /* end gdbstub_show_regs() */
-
-/*****************************************************************************/
-/*
- * dump debugging regs
- */
-static void __maybe_unused gdbstub_dump_debugregs(void)
-{
- gdbstub_printk("DCR %08lx ", __debug_status.dcr);
- gdbstub_printk("BRR %08lx\n", __debug_status.brr);
-
- gdbstub_printk("IBAR0 %08lx ", __get_ibar(0));
- gdbstub_printk("IBAR1 %08lx ", __get_ibar(1));
- gdbstub_printk("IBAR2 %08lx ", __get_ibar(2));
- gdbstub_printk("IBAR3 %08lx\n", __get_ibar(3));
-
- gdbstub_printk("DBAR0 %08lx ", __get_dbar(0));
- gdbstub_printk("DBMR00 %08lx ", __get_dbmr0(0));
- gdbstub_printk("DBMR01 %08lx\n", __get_dbmr1(0));
-
- gdbstub_printk("DBAR1 %08lx ", __get_dbar(1));
- gdbstub_printk("DBMR10 %08lx ", __get_dbmr0(1));
- gdbstub_printk("DBMR11 %08lx\n", __get_dbmr1(1));
-
- gdbstub_printk("\n");
-} /* end gdbstub_dump_debugregs() */
-
-/*****************************************************************************/
-/*
- * dump the MMU state into a structure so that it can be accessed with GDB
- */
-void gdbstub_get_mmu_state(void)
-{
- asm volatile("movsg hsr0,%0" : "=r"(__debug_mmu.regs.hsr0));
- asm volatile("movsg pcsr,%0" : "=r"(__debug_mmu.regs.pcsr));
- asm volatile("movsg esr0,%0" : "=r"(__debug_mmu.regs.esr0));
- asm volatile("movsg ear0,%0" : "=r"(__debug_mmu.regs.ear0));
- asm volatile("movsg epcr0,%0" : "=r"(__debug_mmu.regs.epcr0));
-
- /* read the protection / SAT registers */
- __debug_mmu.iamr[0].L = __get_IAMLR(0);
- __debug_mmu.iamr[0].P = __get_IAMPR(0);
- __debug_mmu.iamr[1].L = __get_IAMLR(1);
- __debug_mmu.iamr[1].P = __get_IAMPR(1);
- __debug_mmu.iamr[2].L = __get_IAMLR(2);
- __debug_mmu.iamr[2].P = __get_IAMPR(2);
- __debug_mmu.iamr[3].L = __get_IAMLR(3);
- __debug_mmu.iamr[3].P = __get_IAMPR(3);
- __debug_mmu.iamr[4].L = __get_IAMLR(4);
- __debug_mmu.iamr[4].P = __get_IAMPR(4);
- __debug_mmu.iamr[5].L = __get_IAMLR(5);
- __debug_mmu.iamr[5].P = __get_IAMPR(5);
- __debug_mmu.iamr[6].L = __get_IAMLR(6);
- __debug_mmu.iamr[6].P = __get_IAMPR(6);
- __debug_mmu.iamr[7].L = __get_IAMLR(7);
- __debug_mmu.iamr[7].P = __get_IAMPR(7);
- __debug_mmu.iamr[8].L = __get_IAMLR(8);
- __debug_mmu.iamr[8].P = __get_IAMPR(8);
- __debug_mmu.iamr[9].L = __get_IAMLR(9);
- __debug_mmu.iamr[9].P = __get_IAMPR(9);
- __debug_mmu.iamr[10].L = __get_IAMLR(10);
- __debug_mmu.iamr[10].P = __get_IAMPR(10);
- __debug_mmu.iamr[11].L = __get_IAMLR(11);
- __debug_mmu.iamr[11].P = __get_IAMPR(11);
- __debug_mmu.iamr[12].L = __get_IAMLR(12);
- __debug_mmu.iamr[12].P = __get_IAMPR(12);
- __debug_mmu.iamr[13].L = __get_IAMLR(13);
- __debug_mmu.iamr[13].P = __get_IAMPR(13);
- __debug_mmu.iamr[14].L = __get_IAMLR(14);
- __debug_mmu.iamr[14].P = __get_IAMPR(14);
- __debug_mmu.iamr[15].L = __get_IAMLR(15);
- __debug_mmu.iamr[15].P = __get_IAMPR(15);
-
- __debug_mmu.damr[0].L = __get_DAMLR(0);
- __debug_mmu.damr[0].P = __get_DAMPR(0);
- __debug_mmu.damr[1].L = __get_DAMLR(1);
- __debug_mmu.damr[1].P = __get_DAMPR(1);
- __debug_mmu.damr[2].L = __get_DAMLR(2);
- __debug_mmu.damr[2].P = __get_DAMPR(2);
- __debug_mmu.damr[3].L = __get_DAMLR(3);
- __debug_mmu.damr[3].P = __get_DAMPR(3);
- __debug_mmu.damr[4].L = __get_DAMLR(4);
- __debug_mmu.damr[4].P = __get_DAMPR(4);
- __debug_mmu.damr[5].L = __get_DAMLR(5);
- __debug_mmu.damr[5].P = __get_DAMPR(5);
- __debug_mmu.damr[6].L = __get_DAMLR(6);
- __debug_mmu.damr[6].P = __get_DAMPR(6);
- __debug_mmu.damr[7].L = __get_DAMLR(7);
- __debug_mmu.damr[7].P = __get_DAMPR(7);
- __debug_mmu.damr[8].L = __get_DAMLR(8);
- __debug_mmu.damr[8].P = __get_DAMPR(8);
- __debug_mmu.damr[9].L = __get_DAMLR(9);
- __debug_mmu.damr[9].P = __get_DAMPR(9);
- __debug_mmu.damr[10].L = __get_DAMLR(10);
- __debug_mmu.damr[10].P = __get_DAMPR(10);
- __debug_mmu.damr[11].L = __get_DAMLR(11);
- __debug_mmu.damr[11].P = __get_DAMPR(11);
- __debug_mmu.damr[12].L = __get_DAMLR(12);
- __debug_mmu.damr[12].P = __get_DAMPR(12);
- __debug_mmu.damr[13].L = __get_DAMLR(13);
- __debug_mmu.damr[13].P = __get_DAMPR(13);
- __debug_mmu.damr[14].L = __get_DAMLR(14);
- __debug_mmu.damr[14].P = __get_DAMPR(14);
- __debug_mmu.damr[15].L = __get_DAMLR(15);
- __debug_mmu.damr[15].P = __get_DAMPR(15);
-
-#ifdef CONFIG_MMU
- do {
- /* read the DAT entries from the TLB */
- struct __debug_amr *p;
- int loop;
-
- asm volatile("movsg tplr,%0" : "=r"(__debug_mmu.regs.tplr));
- asm volatile("movsg tppr,%0" : "=r"(__debug_mmu.regs.tppr));
- asm volatile("movsg tpxr,%0" : "=r"(__debug_mmu.regs.tpxr));
- asm volatile("movsg cxnr,%0" : "=r"(__debug_mmu.regs.cxnr));
-
- p = __debug_mmu.tlb;
-
- /* way 0 */
- asm volatile("movgs %0,tpxr" :: "r"(0 << TPXR_WAY_SHIFT));
- for (loop = 0; loop < 64; loop++) {
- asm volatile("tlbpr %0,gr0,#1,#0" :: "r"(loop << PAGE_SHIFT));
- asm volatile("movsg tplr,%0" : "=r"(p->L));
- asm volatile("movsg tppr,%0" : "=r"(p->P));
- p++;
- }
-
- /* way 1 */
- asm volatile("movgs %0,tpxr" :: "r"(1 << TPXR_WAY_SHIFT));
- for (loop = 0; loop < 64; loop++) {
- asm volatile("tlbpr %0,gr0,#1,#0" :: "r"(loop << PAGE_SHIFT));
- asm volatile("movsg tplr,%0" : "=r"(p->L));
- asm volatile("movsg tppr,%0" : "=r"(p->P));
- p++;
- }
-
- asm volatile("movgs %0,tplr" :: "r"(__debug_mmu.regs.tplr));
- asm volatile("movgs %0,tppr" :: "r"(__debug_mmu.regs.tppr));
- asm volatile("movgs %0,tpxr" :: "r"(__debug_mmu.regs.tpxr));
- } while(0);
-#endif
-
-} /* end gdbstub_get_mmu_state() */
-
-/*
- * handle general query commands of the form 'qXXXXX'
- */
-static void gdbstub_handle_query(void)
-{
- if (strcmp(input_buffer, "qAttached") == 0) {
- /* return current thread ID */
- sprintf(output_buffer, "1");
- return;
- }
-
- if (strcmp(input_buffer, "qC") == 0) {
- /* return current thread ID */
- sprintf(output_buffer, "QC 0");
- return;
- }
-
- if (strcmp(input_buffer, "qOffsets") == 0) {
- /* return relocation offset of text and data segments */
- sprintf(output_buffer, "Text=0;Data=0;Bss=0");
- return;
- }
-
- if (strcmp(input_buffer, "qSymbol::") == 0) {
- sprintf(output_buffer, "OK");
- return;
- }
-
- if (strcmp(input_buffer, "qSupported") == 0) {
- /* query of supported features */
- sprintf(output_buffer, "PacketSize=%u;ReverseContinue-;ReverseStep-",
- sizeof(input_buffer));
- return;
- }
-
- gdbstub_strcpy(output_buffer,"E01");
-}
-
-/*****************************************************************************/
-/*
- * handle event interception and GDB remote protocol processing
- * - on entry:
- * PSR.ET==0, PSR.S==1 and the CPU is in debug mode
- * __debug_frame points to the saved registers
- * __frame points to the kernel mode exception frame, if it was in kernel
- * mode when the break happened
- */
-void gdbstub(int sigval)
-{
- unsigned long addr, length, loop, dbar, temp, temp2, temp3;
- uint32_t zero;
- char *ptr;
- int flush_cache = 0;
-
- LEDS(0x5000);
-
- if (sigval < 0) {
-#ifndef CONFIG_GDBSTUB_IMMEDIATE
- /* return immediately if GDB immediate activation option not set */
- return;
-#else
- sigval = SIGINT;
-#endif
- }
-
- save_user_regs(&__debug_frame0->uc);
-
-#if 0
- gdbstub_printk("--> gdbstub() %08x %p %08x %08x\n",
- __debug_frame->pc,
- __debug_frame,
- __debug_regs->brr,
- __debug_regs->bpsr);
-// gdbstub_show_regs();
-#endif
-
- LEDS(0x5001);
-
- /* if we were interrupted by input on the serial gdbstub serial port,
- * restore the context prior to the interrupt so that we return to that
- * directly
- */
- temp = (unsigned long) __entry_kerneltrap_table;
- temp2 = (unsigned long) __entry_usertrap_table;
- temp3 = __debug_frame->pc & ~15;
-
- if (temp3 == temp + TBR_TT_INTERRUPT_15 ||
- temp3 == temp2 + TBR_TT_INTERRUPT_15
- ) {
- asm volatile("movsg pcsr,%0" : "=r"(__debug_frame->pc));
- __debug_frame->psr |= PSR_ET;
- __debug_frame->psr &= ~PSR_S;
- if (__debug_frame->psr & PSR_PS)
- __debug_frame->psr |= PSR_S;
- __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12;
- __debug_status.brr |= BRR_EB;
- sigval = SIGINT;
- }
-
- /* handle the decrement timer going off (FR451 only) */
- if (temp3 == temp + TBR_TT_DECREMENT_TIMER ||
- temp3 == temp2 + TBR_TT_DECREMENT_TIMER
- ) {
- asm volatile("movgs %0,timerd" :: "r"(10000000));
- asm volatile("movsg pcsr,%0" : "=r"(__debug_frame->pc));
- __debug_frame->psr |= PSR_ET;
- __debug_frame->psr &= ~PSR_S;
- if (__debug_frame->psr & PSR_PS)
- __debug_frame->psr |= PSR_S;
- __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12;
- __debug_status.brr |= BRR_EB;
- sigval = SIGXCPU;
- }
-
- LEDS(0x5002);
-
- /* after a BREAK insn, the PC lands on the far side of it */
- if (__debug_status.brr & BRR_SB)
- gdbstub_check_breakpoint();
-
- LEDS(0x5003);
-
- /* handle attempts to write console data via GDB "O" commands */
- if (__debug_frame->pc == (unsigned long) gdbstub_console_write + 4) {
- __gdbstub_console_write((struct console *) __debug_frame->gr8,
- (const char *) __debug_frame->gr9,
- (unsigned) __debug_frame->gr10);
- goto done;
- }
-
- if (gdbstub_rx_unget) {
- sigval = SIGINT;
- goto packet_waiting;
- }
-
- if (!sigval)
- sigval = gdbstub_compute_signal(__debug_status.brr);
-
- LEDS(0x5004);
-
- /* send a message to the debugger's user saying what happened if it may
- * not be clear cut (we can't map exceptions onto signals properly)
- */
- if (sigval != SIGINT && sigval != SIGTRAP && sigval != SIGILL) {
- static const char title[] = "Break ";
- static const char crlf[] = "\r\n";
- unsigned long brr = __debug_status.brr;
- char hx;
-
- ptr = output_buffer;
- *ptr++ = 'O';
- ptr = mem2hex(title, ptr, sizeof(title) - 1,0);
-
- hx = hex_asc_hi(brr >> 24);
- ptr = hex_byte_pack(ptr, hx);
- hx = hex_asc_lo(brr >> 24);
- ptr = hex_byte_pack(ptr, hx);
- hx = hex_asc_hi(brr >> 16);
- ptr = hex_byte_pack(ptr, hx);
- hx = hex_asc_lo(brr >> 16);
- ptr = hex_byte_pack(ptr, hx);
- hx = hex_asc_hi(brr >> 8);
- ptr = hex_byte_pack(ptr, hx);
- hx = hex_asc_lo(brr >> 8);
- ptr = hex_byte_pack(ptr, hx);
- hx = hex_asc_hi(brr);
- ptr = hex_byte_pack(ptr, hx);
- hx = hex_asc_lo(brr);
- ptr = hex_byte_pack(ptr, hx);
-
- ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
- *ptr = 0;
- gdbstub_send_packet(output_buffer); /* send it off... */
- }
-
- LEDS(0x5005);
-
- /* tell the debugger that an exception has occurred */
- ptr = output_buffer;
-
- /* Send trap type (converted to signal) */
- *ptr++ = 'T';
- ptr = hex_byte_pack(ptr, sigval);
-
- /* Send Error PC */
- ptr = hex_byte_pack(ptr, GDB_REG_PC);
- *ptr++ = ':';
- ptr = mem2hex(&__debug_frame->pc, ptr, 4, 0);
- *ptr++ = ';';
-
- /*
- * Send frame pointer
- */
- ptr = hex_byte_pack(ptr, GDB_REG_FP);
- *ptr++ = ':';
- ptr = mem2hex(&__debug_frame->fp, ptr, 4, 0);
- *ptr++ = ';';
-
- /*
- * Send stack pointer
- */
- ptr = hex_byte_pack(ptr, GDB_REG_SP);
- *ptr++ = ':';
- ptr = mem2hex(&__debug_frame->sp, ptr, 4, 0);
- *ptr++ = ';';
-
- *ptr++ = 0;
- gdbstub_send_packet(output_buffer); /* send it off... */
-
- LEDS(0x5006);
-
- packet_waiting:
- gdbstub_get_mmu_state();
-
- /* wait for input from remote GDB */
- while (1) {
- output_buffer[0] = 0;
-
- LEDS(0x5007);
- gdbstub_recv_packet(input_buffer);
- LEDS(0x5600 | input_buffer[0]);
-
- switch (input_buffer[0]) {
- /* request repeat of last signal number */
- case '?':
- output_buffer[0] = 'S';
- output_buffer[1] = hex_asc_hi(sigval);
- output_buffer[2] = hex_asc_lo(sigval);
- output_buffer[3] = 0;
- break;
-
- case 'd':
- /* toggle debug flag */
- break;
-
- /* return the value of the CPU registers
- * - GR0, GR1, GR2, GR3, GR4, GR5, GR6, GR7,
- * - GR8, GR9, GR10, GR11, GR12, GR13, GR14, GR15,
- * - GR16, GR17, GR18, GR19, GR20, GR21, GR22, GR23,
- * - GR24, GR25, GR26, GR27, GR28, GR29, GR30, GR31,
- * - GR32, GR33, GR34, GR35, GR36, GR37, GR38, GR39,
- * - GR40, GR41, GR42, GR43, GR44, GR45, GR46, GR47,
- * - GR48, GR49, GR50, GR51, GR52, GR53, GR54, GR55,
- * - GR56, GR57, GR58, GR59, GR60, GR61, GR62, GR63,
- * - FP0, FP1, FP2, FP3, FP4, FP5, FP6, FP7,
- * - FP8, FP9, FP10, FP11, FP12, FP13, FP14, FP15,
- * - FP16, FP17, FP18, FP19, FP20, FP21, FP22, FP23,
- * - FP24, FP25, FP26, FP27, FP28, FP29, FP30, FP31,
- * - FP32, FP33, FP34, FP35, FP36, FP37, FP38, FP39,
- * - FP40, FP41, FP42, FP43, FP44, FP45, FP46, FP47,
- * - FP48, FP49, FP50, FP51, FP52, FP53, FP54, FP55,
- * - FP56, FP57, FP58, FP59, FP60, FP61, FP62, FP63,
- * - PC, PSR, CCR, CCCR,
- * - _X132, _X133, _X134
- * - TBR, BRR, DBAR0, DBAR1, DBAR2, DBAR3,
- * - _X141, _X142, _X143, _X144,
- * - LR, LCR
- */
- case 'g':
- zero = 0;
- ptr = output_buffer;
-
- /* deal with GR0, GR1-GR27, GR28-GR31, GR32-GR63 */
- ptr = mem2hex(&zero, ptr, 4, 0);
-
- for (loop = 1; loop <= 27; loop++)
- ptr = mem2hex(&__debug_user_context->i.gr[loop], ptr, 4, 0);
- temp = (unsigned long) __frame;
- ptr = mem2hex(&temp, ptr, 4, 0);
- ptr = mem2hex(&__debug_user_context->i.gr[29], ptr, 4, 0);
- ptr = mem2hex(&__debug_user_context->i.gr[30], ptr, 4, 0);
-#ifdef CONFIG_MMU
- ptr = mem2hex(&__debug_user_context->i.gr[31], ptr, 4, 0);
-#else
- temp = (unsigned long) __debug_frame;
- ptr = mem2hex(&temp, ptr, 4, 0);
-#endif
-
- for (loop = 32; loop <= 63; loop++)
- ptr = mem2hex(&__debug_user_context->i.gr[loop], ptr, 4, 0);
-
- /* deal with FR0-FR63 */
- for (loop = 0; loop <= 63; loop++)
- ptr = mem2hex(&__debug_user_context->f.fr[loop], ptr, 4, 0);
-
- /* deal with special registers */
- ptr = mem2hex(&__debug_frame->pc, ptr, 4, 0);
- ptr = mem2hex(&__debug_frame->psr, ptr, 4, 0);
- ptr = mem2hex(&__debug_frame->ccr, ptr, 4, 0);
- ptr = mem2hex(&__debug_frame->cccr, ptr, 4, 0);
- ptr = mem2hex(&zero, ptr, 4, 0);
- ptr = mem2hex(&zero, ptr, 4, 0);
- ptr = mem2hex(&zero, ptr, 4, 0);
- ptr = mem2hex(&__debug_frame->tbr, ptr, 4, 0);
- ptr = mem2hex(&__debug_status.brr , ptr, 4, 0);
-
- asm volatile("movsg dbar0,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
- asm volatile("movsg dbar1,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
- asm volatile("movsg dbar2,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
- asm volatile("movsg dbar3,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
-
- asm volatile("movsg scr0,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
- asm volatile("movsg scr1,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
- asm volatile("movsg scr2,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
- asm volatile("movsg scr3,%0" : "=r"(dbar));
- ptr = mem2hex(&dbar, ptr, 4, 0);
-
- ptr = mem2hex(&__debug_frame->lr, ptr, 4, 0);
- ptr = mem2hex(&__debug_frame->lcr, ptr, 4, 0);
-
- ptr = mem2hex(&__debug_frame->iacc0, ptr, 8, 0);
-
- ptr = mem2hex(&__debug_user_context->f.fsr[0], ptr, 4, 0);
-
- for (loop = 0; loop <= 7; loop++)
- ptr = mem2hex(&__debug_user_context->f.acc[loop], ptr, 4, 0);
-
- ptr = mem2hex(&__debug_user_context->f.accg, ptr, 8, 0);
-
- for (loop = 0; loop <= 1; loop++)
- ptr = mem2hex(&__debug_user_context->f.msr[loop], ptr, 4, 0);
-
- ptr = mem2hex(&__debug_frame->gner0, ptr, 4, 0);
- ptr = mem2hex(&__debug_frame->gner1, ptr, 4, 0);
-
- ptr = mem2hex(&__debug_user_context->f.fner[0], ptr, 4, 0);
- ptr = mem2hex(&__debug_user_context->f.fner[1], ptr, 4, 0);
-
- break;
-
- /* set the values of the CPU registers */
- case 'G':
- ptr = &input_buffer[1];
-
- /* deal with GR0, GR1-GR27, GR28-GR31, GR32-GR63 */
- ptr = hex2mem(ptr, &temp, 4);
-
- for (loop = 1; loop <= 27; loop++)
- ptr = hex2mem(ptr, &__debug_user_context->i.gr[loop], 4);
-
- ptr = hex2mem(ptr, &temp, 4);
- __frame = (struct pt_regs *) temp;
- ptr = hex2mem(ptr, &__debug_frame->gr29, 4);
- ptr = hex2mem(ptr, &__debug_frame->gr30, 4);
-#ifdef CONFIG_MMU
- ptr = hex2mem(ptr, &__debug_frame->gr31, 4);
-#else
- ptr = hex2mem(ptr, &temp, 4);
-#endif
-
- for (loop = 32; loop <= 63; loop++)
- ptr = hex2mem(ptr, &__debug_user_context->i.gr[loop], 4);
-
- /* deal with FR0-FR63 */
- for (loop = 0; loop <= 63; loop++)
- ptr = mem2hex(&__debug_user_context->f.fr[loop], ptr, 4, 0);
-
- /* deal with special registers */
- ptr = hex2mem(ptr, &__debug_frame->pc, 4);
- ptr = hex2mem(ptr, &__debug_frame->psr, 4);
- ptr = hex2mem(ptr, &__debug_frame->ccr, 4);
- ptr = hex2mem(ptr, &__debug_frame->cccr,4);
-
- for (loop = 132; loop <= 140; loop++)
- ptr = hex2mem(ptr, &temp, 4);
-
- ptr = hex2mem(ptr, &temp, 4);
- asm volatile("movgs %0,scr0" :: "r"(temp));
- ptr = hex2mem(ptr, &temp, 4);
- asm volatile("movgs %0,scr1" :: "r"(temp));
- ptr = hex2mem(ptr, &temp, 4);
- asm volatile("movgs %0,scr2" :: "r"(temp));
- ptr = hex2mem(ptr, &temp, 4);
- asm volatile("movgs %0,scr3" :: "r"(temp));
-
- ptr = hex2mem(ptr, &__debug_frame->lr, 4);
- ptr = hex2mem(ptr, &__debug_frame->lcr, 4);
-
- ptr = hex2mem(ptr, &__debug_frame->iacc0, 8);
-
- ptr = hex2mem(ptr, &__debug_user_context->f.fsr[0], 4);
-
- for (loop = 0; loop <= 7; loop++)
- ptr = hex2mem(ptr, &__debug_user_context->f.acc[loop], 4);
-
- ptr = hex2mem(ptr, &__debug_user_context->f.accg, 8);
-
- for (loop = 0; loop <= 1; loop++)
- ptr = hex2mem(ptr, &__debug_user_context->f.msr[loop], 4);
-
- ptr = hex2mem(ptr, &__debug_frame->gner0, 4);
- ptr = hex2mem(ptr, &__debug_frame->gner1, 4);
-
- ptr = hex2mem(ptr, &__debug_user_context->f.fner[0], 4);
- ptr = hex2mem(ptr, &__debug_user_context->f.fner[1], 4);
-
- gdbstub_strcpy(output_buffer,"OK");
- break;
-
- /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */
- case 'm':
- ptr = &input_buffer[1];
-
- if (hexToInt(&ptr, &addr) &&
- *ptr++ == ',' &&
- hexToInt(&ptr, &length)
- ) {
- if (mem2hex((char *)addr, output_buffer, length, 1))
- break;
- gdbstub_strcpy (output_buffer, "E03");
- }
- else {
- gdbstub_strcpy(output_buffer,"E01");
- }
- break;
-
- /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
- case 'M':
- ptr = &input_buffer[1];
-
- if (hexToInt(&ptr, &addr) &&
- *ptr++ == ',' &&
- hexToInt(&ptr, &length) &&
- *ptr++ == ':'
- ) {
- if (hex2mem(ptr, (char *)addr, length)) {
- gdbstub_strcpy(output_buffer, "OK");
- }
- else {
- gdbstub_strcpy(output_buffer, "E03");
- }
- }
- else
- gdbstub_strcpy(output_buffer, "E02");
-
- flush_cache = 1;
- break;
-
- /* pNN: Read value of reg N and return it */
- case 'p':
- /* return no value, indicating that we don't support
- * this command and that gdb should use 'g' instead */
- break;
-
- /* PNN,=RRRRRRRR: Write value R to reg N return OK */
- case 'P':
- ptr = &input_buffer[1];
-
- if (!hexToInt(&ptr, &addr) ||
- *ptr++ != '=' ||
- !hexToInt(&ptr, &temp)
- ) {
- gdbstub_strcpy(output_buffer, "E01");
- break;
- }
-
- temp2 = 1;
- switch (addr) {
- case GDB_REG_GR(0):
- break;
- case GDB_REG_GR(1) ... GDB_REG_GR(63):
- __debug_user_context->i.gr[addr - GDB_REG_GR(0)] = temp;
- break;
- case GDB_REG_FR(0) ... GDB_REG_FR(63):
- __debug_user_context->f.fr[addr - GDB_REG_FR(0)] = temp;
- break;
- case GDB_REG_PC:
- __debug_user_context->i.pc = temp;
- break;
- case GDB_REG_PSR:
- __debug_user_context->i.psr = temp;
- break;
- case GDB_REG_CCR:
- __debug_user_context->i.ccr = temp;
- break;
- case GDB_REG_CCCR:
- __debug_user_context->i.cccr = temp;
- break;
- case GDB_REG_BRR:
- __debug_status.brr = temp;
- break;
- case GDB_REG_LR:
- __debug_user_context->i.lr = temp;
- break;
- case GDB_REG_LCR:
- __debug_user_context->i.lcr = temp;
- break;
- case GDB_REG_FSR0:
- __debug_user_context->f.fsr[0] = temp;
- break;
- case GDB_REG_ACC(0) ... GDB_REG_ACC(7):
- __debug_user_context->f.acc[addr - GDB_REG_ACC(0)] = temp;
- break;
- case GDB_REG_ACCG(0):
- *(uint32_t *) &__debug_user_context->f.accg[0] = temp;
- break;
- case GDB_REG_ACCG(4):
- *(uint32_t *) &__debug_user_context->f.accg[4] = temp;
- break;
- case GDB_REG_MSR(0) ... GDB_REG_MSR(1):
- __debug_user_context->f.msr[addr - GDB_REG_MSR(0)] = temp;
- break;
- case GDB_REG_GNER(0) ... GDB_REG_GNER(1):
- __debug_user_context->i.gner[addr - GDB_REG_GNER(0)] = temp;
- break;
- case GDB_REG_FNER(0) ... GDB_REG_FNER(1):
- __debug_user_context->f.fner[addr - GDB_REG_FNER(0)] = temp;
- break;
- default:
- temp2 = 0;
- break;
- }
-
- if (temp2) {
- gdbstub_strcpy(output_buffer, "OK");
- }
- else {
- gdbstub_strcpy(output_buffer, "E02");
- }
- break;
-
- /* cAA..AA Continue at address AA..AA(optional) */
- case 'c':
- /* try to read optional parameter, pc unchanged if no parm */
- ptr = &input_buffer[1];
- if (hexToInt(&ptr, &addr))
- __debug_frame->pc = addr;
- goto done;
-
- /* kill the program */
- case 'k' :
- goto done; /* just continue */
-
- /* detach */
- case 'D':
- gdbstub_strcpy(output_buffer, "OK");
- break;
-
- /* reset the whole machine (FIXME: system dependent) */
- case 'r':
- break;
-
-
- /* step to next instruction */
- case 's':
- __debug_regs->dcr |= DCR_SE;
- __debug_status.dcr |= DCR_SE;
- goto done;
-
- /* extended command */
- case 'v':
- if (strcmp(input_buffer, "vCont?") == 0) {
- output_buffer[0] = 0;
- break;
- }
- goto unsupported_cmd;
-
- /* set baud rate (bBB) */
- case 'b':
- ptr = &input_buffer[1];
- if (!hexToInt(&ptr, &temp)) {
- gdbstub_strcpy(output_buffer,"B01");
- break;
- }
-
- if (temp) {
- /* ack before changing speed */
- gdbstub_send_packet("OK");
- gdbstub_set_baud(temp);
- }
- break;
-
- /* set breakpoint */
- case 'Z':
- ptr = &input_buffer[1];
-
- if (!hexToInt(&ptr,&temp) || *ptr++ != ',' ||
- !hexToInt(&ptr,&addr) || *ptr++ != ',' ||
- !hexToInt(&ptr,&length)
- ) {
- gdbstub_strcpy(output_buffer,"E01");
- break;
- }
-
- if (temp >= 5) {
- gdbstub_strcpy(output_buffer,"E03");
- break;
- }
-
- if (gdbstub_set_breakpoint(temp, addr, length) < 0) {
- gdbstub_strcpy(output_buffer,"E03");
- break;
- }
-
- if (temp == 0)
- flush_cache = 1; /* soft bkpt by modified memory */
-
- gdbstub_strcpy(output_buffer,"OK");
- break;
-
- /* clear breakpoint */
- case 'z':
- ptr = &input_buffer[1];
-
- if (!hexToInt(&ptr,&temp) || *ptr++ != ',' ||
- !hexToInt(&ptr,&addr) || *ptr++ != ',' ||
- !hexToInt(&ptr,&length)
- ) {
- gdbstub_strcpy(output_buffer,"E01");
- break;
- }
-
- if (temp >= 5) {
- gdbstub_strcpy(output_buffer,"E03");
- break;
- }
-
- if (gdbstub_clear_breakpoint(temp, addr, length) < 0) {
- gdbstub_strcpy(output_buffer,"E03");
- break;
- }
-
- if (temp == 0)
- flush_cache = 1; /* soft bkpt by modified memory */
-
- gdbstub_strcpy(output_buffer,"OK");
- break;
-
- /* Thread-setting packet */
- case 'H':
- gdbstub_strcpy(output_buffer, "OK");
- break;
-
- case 'q':
- gdbstub_handle_query();
- break;
-
- default:
- unsupported_cmd:
- gdbstub_proto("### GDB Unsupported Cmd '%s'\n",input_buffer);
- gdbstub_strcpy(output_buffer,"E01");
- break;
- }
-
- /* reply to the request */
- LEDS(0x5009);
- gdbstub_send_packet(output_buffer);
- }
-
- done:
- restore_user_regs(&__debug_frame0->uc);
-
- //gdbstub_dump_debugregs();
- //gdbstub_printk("<-- gdbstub() %08x\n", __debug_frame->pc);
-
- /* need to flush the instruction cache before resuming, as we may have
- * deposited a breakpoint, and the icache probably has no way of
- * knowing that a data ref to some location may have changed something
- * that is in the instruction cache. NB: We flush both caches, just to
- * be sure...
- */
-
- /* note: flushing the icache will clobber EAR0 on the FR451 */
- if (flush_cache)
- gdbstub_purge_cache();
-
- LEDS(0x5666);
-
-} /* end gdbstub() */
-
-/*****************************************************************************/
-/*
- * initialise the GDB stub
- */
-void __init gdbstub_init(void)
-{
-#ifdef CONFIG_GDBSTUB_IMMEDIATE
- unsigned char ch;
- int ret;
-#endif
-
- gdbstub_printk("%s", gdbstub_banner);
-
- gdbstub_io_init();
-
- /* try to talk to GDB (or anyone insane enough to want to type GDB protocol by hand) */
- gdbstub_proto("### GDB Tx ACK\n");
- gdbstub_tx_char('+'); /* 'hello world' */
-
-#ifdef CONFIG_GDBSTUB_IMMEDIATE
- gdbstub_printk("GDB Stub waiting for packet\n");
-
- /*
- * In case GDB is started before us, ack any packets
- * (presumably "$?#xx") sitting there.
- */
- do { gdbstub_rx_char(&ch, 0); } while (ch != '$');
- do { gdbstub_rx_char(&ch, 0); } while (ch != '#');
- do { ret = gdbstub_rx_char(&ch, 0); } while (ret != 0); /* eat first csum byte */
- do { ret = gdbstub_rx_char(&ch, 0); } while (ret != 0); /* eat second csum byte */
-
- gdbstub_proto("### GDB Tx NAK\n");
- gdbstub_tx_char('-'); /* nak it */
-
-#else
- gdbstub_printk("GDB Stub set\n");
-#endif
-
-#if 0
- /* send banner */
- ptr = output_buffer;
- *ptr++ = 'O';
- ptr = mem2hex(gdbstub_banner, ptr, sizeof(gdbstub_banner) - 1, 0);
- gdbstub_send_packet(output_buffer);
-#endif
-#if defined(CONFIG_GDB_CONSOLE) && defined(CONFIG_GDBSTUB_IMMEDIATE)
- register_console(&gdbstub_console);
-#endif
-
-} /* end gdbstub_init() */
-
-/*****************************************************************************/
-/*
- * register the console at a more appropriate time
- */
-#if defined (CONFIG_GDB_CONSOLE) && !defined(CONFIG_GDBSTUB_IMMEDIATE)
-static int __init gdbstub_postinit(void)
-{
- printk("registering console\n");
- register_console(&gdbstub_console);
- return 0;
-} /* end gdbstub_postinit() */
-
-__initcall(gdbstub_postinit);
-#endif
-
-/*****************************************************************************/
-/*
- * send an exit message to GDB
- */
-void gdbstub_exit(int status)
-{
- unsigned char checksum;
- int count;
- unsigned char ch;
-
- sprintf(output_buffer,"W%02x",status&0xff);
-
- gdbstub_tx_char('$');
- checksum = 0;
- count = 0;
-
- while ((ch = output_buffer[count]) != 0) {
- gdbstub_tx_char(ch);
- checksum += ch;
- count += 1;
- }
-
- gdbstub_tx_char('#');
- gdbstub_tx_char(hex_asc_hi(checksum));
- gdbstub_tx_char(hex_asc_lo(checksum));
-
- /* make sure the output is flushed, or else RedBoot might clobber it */
- gdbstub_tx_char('-');
- gdbstub_tx_flush();
-
-} /* end gdbstub_exit() */
-
-/*****************************************************************************/
-/*
- * GDB wants to call malloc() and free() to allocate memory for calling kernel
- * functions directly from its command line
- */
-static void *malloc(size_t size) __maybe_unused;
-static void *malloc(size_t size)
-{
- return kmalloc(size, GFP_ATOMIC);
-}
-
-static void free(void *p) __maybe_unused;
-static void free(void *p)
-{
- kfree(p);
-}
-
-static uint32_t ___get_HSR0(void) __maybe_unused;
-static uint32_t ___get_HSR0(void)
-{
- return __get_HSR(0);
-}
-
-static uint32_t ___set_HSR0(uint32_t x) __maybe_unused;
-static uint32_t ___set_HSR0(uint32_t x)
-{
- __set_HSR(0, x);
- return __get_HSR(0);
-}
+++ /dev/null
-/* head-mmu-fr451.S: FR451 mmu-linux specific bits of initialisation
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/linkage.h>
-#include <asm/ptrace.h>
-#include <asm/page.h>
-#include <asm/mem-layout.h>
-#include <asm/spr-regs.h>
-#include <asm/mb86943a.h>
-#include "head.inc"
-
-
-#define __400_DBR0 0xfe000e00
-#define __400_DBR1 0xfe000e08
-#define __400_DBR2 0xfe000e10
-#define __400_DBR3 0xfe000e18
-#define __400_DAM0 0xfe000f00
-#define __400_DAM1 0xfe000f08
-#define __400_DAM2 0xfe000f10
-#define __400_DAM3 0xfe000f18
-#define __400_LGCR 0xfe000010
-#define __400_LCR 0xfe000100
-#define __400_LSBR 0xfe000c00
-
- __INIT
- .balign 4
-
-###############################################################################
-#
-# describe the position and layout of the SDRAM controller registers
-#
-# ENTRY: EXIT:
-# GR5 - cacheline size
-# GR11 - displacement of 2nd SDRAM addr reg from GR14
-# GR12 - displacement of 3rd SDRAM addr reg from GR14
-# GR13 - displacement of 4th SDRAM addr reg from GR14
-# GR14 - address of 1st SDRAM addr reg
-# GR15 - amount to shift address by to match SDRAM addr reg
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-# CC0 - T if DBR0 is present
-# CC1 - T if DBR1 is present
-# CC2 - T if DBR2 is present
-# CC3 - T if DBR3 is present
-#
-###############################################################################
- .globl __head_fr451_describe_sdram
-__head_fr451_describe_sdram:
- sethi.p %hi(__400_DBR0),gr14
- setlo %lo(__400_DBR0),gr14
- setlos.p #__400_DBR1-__400_DBR0,gr11
- setlos #__400_DBR2-__400_DBR0,gr12
- setlos.p #__400_DBR3-__400_DBR0,gr13
- setlos #32,gr5 ; cacheline size
- setlos.p #0,gr15 ; amount to shift addr reg by
- setlos #0x00ff,gr4
- movgs gr4,cccr ; extant DARS/DAMK regs
- bralr
-
-###############################################################################
-#
-# rearrange the bus controller registers
-#
-# ENTRY: EXIT:
-# GR26 &__head_reference [saved]
-# GR30 LED address revised LED address
-#
-###############################################################################
- .globl __head_fr451_set_busctl
-__head_fr451_set_busctl:
- sethi.p %hi(__400_LGCR),gr4
- setlo %lo(__400_LGCR),gr4
- sethi.p %hi(__400_LSBR),gr10
- setlo %lo(__400_LSBR),gr10
- sethi.p %hi(__400_LCR),gr11
- setlo %lo(__400_LCR),gr11
-
- # set the bus controller
- ldi @(gr4,#0),gr5
- ori gr5,#0xff,gr5 ; make sure all chip-selects are enabled
- sti gr5,@(gr4,#0)
-
- sethi.p %hi(__region_CS1),gr4
- setlo %lo(__region_CS1),gr4
- sethi.p %hi(__region_CS1_M),gr5
- setlo %lo(__region_CS1_M),gr5
- sethi.p %hi(__region_CS1_C),gr6
- setlo %lo(__region_CS1_C),gr6
- sti gr4,@(gr10,#1*0x08)
- sti gr5,@(gr10,#1*0x08+0x100)
- sti gr6,@(gr11,#1*0x08)
- sethi.p %hi(__region_CS2),gr4
- setlo %lo(__region_CS2),gr4
- sethi.p %hi(__region_CS2_M),gr5
- setlo %lo(__region_CS2_M),gr5
- sethi.p %hi(__region_CS2_C),gr6
- setlo %lo(__region_CS2_C),gr6
- sti gr4,@(gr10,#2*0x08)
- sti gr5,@(gr10,#2*0x08+0x100)
- sti gr6,@(gr11,#2*0x08)
- sethi.p %hi(__region_CS3),gr4
- setlo %lo(__region_CS3),gr4
- sethi.p %hi(__region_CS3_M),gr5
- setlo %lo(__region_CS3_M),gr5
- sethi.p %hi(__region_CS3_C),gr6
- setlo %lo(__region_CS3_C),gr6
- sti gr4,@(gr10,#3*0x08)
- sti gr5,@(gr10,#3*0x08+0x100)
- sti gr6,@(gr11,#3*0x08)
- sethi.p %hi(__region_CS4),gr4
- setlo %lo(__region_CS4),gr4
- sethi.p %hi(__region_CS4_M),gr5
- setlo %lo(__region_CS4_M),gr5
- sethi.p %hi(__region_CS4_C),gr6
- setlo %lo(__region_CS4_C),gr6
- sti gr4,@(gr10,#4*0x08)
- sti gr5,@(gr10,#4*0x08+0x100)
- sti gr6,@(gr11,#4*0x08)
- sethi.p %hi(__region_CS5),gr4
- setlo %lo(__region_CS5),gr4
- sethi.p %hi(__region_CS5_M),gr5
- setlo %lo(__region_CS5_M),gr5
- sethi.p %hi(__region_CS5_C),gr6
- setlo %lo(__region_CS5_C),gr6
- sti gr4,@(gr10,#5*0x08)
- sti gr5,@(gr10,#5*0x08+0x100)
- sti gr6,@(gr11,#5*0x08)
- sethi.p %hi(__region_CS6),gr4
- setlo %lo(__region_CS6),gr4
- sethi.p %hi(__region_CS6_M),gr5
- setlo %lo(__region_CS6_M),gr5
- sethi.p %hi(__region_CS6_C),gr6
- setlo %lo(__region_CS6_C),gr6
- sti gr4,@(gr10,#6*0x08)
- sti gr5,@(gr10,#6*0x08+0x100)
- sti gr6,@(gr11,#6*0x08)
- sethi.p %hi(__region_CS7),gr4
- setlo %lo(__region_CS7),gr4
- sethi.p %hi(__region_CS7_M),gr5
- setlo %lo(__region_CS7_M),gr5
- sethi.p %hi(__region_CS7_C),gr6
- setlo %lo(__region_CS7_C),gr6
- sti gr4,@(gr10,#7*0x08)
- sti gr5,@(gr10,#7*0x08+0x100)
- sti gr6,@(gr11,#7*0x08)
- membar
- bar
-
- # adjust LED bank address
-#ifdef CONFIG_MB93091_VDK
- sethi.p %hi(__region_CS2 + 0x01200004),gr30
- setlo %lo(__region_CS2 + 0x01200004),gr30
-#endif
- bralr
-
-###############################################################################
-#
-# determine the total SDRAM size
-#
-# ENTRY: EXIT:
-# GR25 - SDRAM size
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-#
-###############################################################################
- .globl __head_fr451_survey_sdram
-__head_fr451_survey_sdram:
- sethi.p %hi(__400_DAM0),gr11
- setlo %lo(__400_DAM0),gr11
- sethi.p %hi(__400_DBR0),gr12
- setlo %lo(__400_DBR0),gr12
-
- sethi.p %hi(0xfe000000),gr17 ; unused SDRAM DBR value
- setlo %lo(0xfe000000),gr17
- setlos #0,gr25
-
- ldi @(gr12,#0x00),gr4 ; DAR0
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS0
- ldi @(gr11,#0x00),gr6 ; DAM0: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS0:
-
- ldi @(gr12,#0x08),gr4 ; DAR1
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS1
- ldi @(gr11,#0x08),gr6 ; DAM1: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS1:
-
- ldi @(gr12,#0x10),gr4 ; DAR2
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS2
- ldi @(gr11,#0x10),gr6 ; DAM2: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS2:
-
- ldi @(gr12,#0x18),gr4 ; DAR3
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS3
- ldi @(gr11,#0x18),gr6 ; DAM3: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS3:
- bralr
-
-###############################################################################
-#
-# set the protection map with the I/DAMPR registers
-#
-# ENTRY: EXIT:
-# GR25 SDRAM size [saved]
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-#
-#
-# Using this map:
-# REGISTERS ADDRESS RANGE VIEW
-# =============== ====================== ===============================
-# IAMPR0/DAMPR0 0xC0000000-0xCFFFFFFF Cached kernel RAM Window
-# DAMPR11 0xE0000000-0xFFFFFFFF Uncached I/O
-#
-###############################################################################
- .globl __head_fr451_set_protection
-__head_fr451_set_protection:
- movsg lr,gr27
-
- # set the I/O region protection registers for FR451 in MMU mode
-#define PGPROT_IO xAMPRx_L|xAMPRx_M|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V
-
- sethi.p %hi(__region_IO),gr5
- setlo %lo(__region_IO),gr5
- setlos #PGPROT_IO|xAMPRx_SS_512Mb,gr4
- or gr4,gr5,gr4
- movgs gr5,damlr11 ; General I/O tile
- movgs gr4,dampr11
-
- # need to open a window onto at least part of the RAM for the kernel's use
- sethi.p %hi(__sdram_base),gr8
- setlo %lo(__sdram_base),gr8 ; physical address
- sethi.p %hi(__page_offset),gr9
- setlo %lo(__page_offset),gr9 ; virtual address
-
- setlos #xAMPRx_L|xAMPRx_M|xAMPRx_SS_256Mb|xAMPRx_S_KERNEL|xAMPRx_V,gr11
- or gr8,gr11,gr8
-
- movgs gr9,iamlr0 ; mapped from real address 0
- movgs gr8,iampr0 ; cached kernel memory at 0xC0000000
- movgs gr9,damlr0
- movgs gr8,dampr0
-
- # set a temporary mapping for the kernel running at address 0 until we've turned on the MMU
- sethi.p %hi(__sdram_base),gr9
- setlo %lo(__sdram_base),gr9 ; virtual address
-
- and.p gr4,gr11,gr4
- and gr5,gr11,gr5
- or.p gr4,gr11,gr4
- or gr5,gr11,gr5
-
- movgs gr9,iamlr1 ; mapped from real address 0
- movgs gr8,iampr1 ; cached kernel memory at 0x00000000
- movgs gr9,damlr1
- movgs gr8,dampr1
-
- # we use DAMR2-10 for kmap_atomic(), cache flush and TLB management
- # since the DAMLR regs are not going to change, we can set them now
- # also set up IAMLR2 to the same as DAMLR5
- sethi.p %hi(KMAP_ATOMIC_PRIMARY_FRAME),gr4
- setlo %lo(KMAP_ATOMIC_PRIMARY_FRAME),gr4
- sethi.p %hi(PAGE_SIZE),gr5
- setlo %lo(PAGE_SIZE),gr5
-
- movgs gr4,damlr2
- movgs gr4,iamlr2
- add gr4,gr5,gr4
- movgs gr4,damlr3
- add gr4,gr5,gr4
- movgs gr4,damlr4
- add gr4,gr5,gr4
- movgs gr4,damlr5
- add gr4,gr5,gr4
- movgs gr4,damlr6
- add gr4,gr5,gr4
- movgs gr4,damlr7
- add gr4,gr5,gr4
- movgs gr4,damlr8
- add gr4,gr5,gr4
- movgs gr4,damlr9
- add gr4,gr5,gr4
- movgs gr4,damlr10
-
- movgs gr0,dampr2
- movgs gr0,dampr4
- movgs gr0,dampr5
- movgs gr0,dampr6
- movgs gr0,dampr7
- movgs gr0,dampr8
- movgs gr0,dampr9
- movgs gr0,dampr10
-
- movgs gr0,iamlr3
- movgs gr0,iamlr4
- movgs gr0,iamlr5
- movgs gr0,iamlr6
- movgs gr0,iamlr7
-
- movgs gr0,iampr2
- movgs gr0,iampr3
- movgs gr0,iampr4
- movgs gr0,iampr5
- movgs gr0,iampr6
- movgs gr0,iampr7
-
- # start in TLB context 0 with the swapper's page tables
- movgs gr0,cxnr
-
- sethi.p %hi(swapper_pg_dir),gr4
- setlo %lo(swapper_pg_dir),gr4
- sethi.p %hi(__page_offset),gr5
- setlo %lo(__page_offset),gr5
- sub gr4,gr5,gr4
- movgs gr4,ttbr
- setlos #xAMPRx_L|xAMPRx_M|xAMPRx_SS_16Kb|xAMPRx_S|xAMPRx_C|xAMPRx_V,gr5
- or gr4,gr5,gr4
- movgs gr4,dampr3
-
- # the FR451 also has an extra trap base register
- movsg tbr,gr4
- movgs gr4,btbr
-
- LEDS 0x3300
- jmpl @(gr27,gr0)
-
-###############################################################################
-#
-# finish setting up the protection registers
-#
-###############################################################################
- .globl __head_fr451_finalise_protection
-__head_fr451_finalise_protection:
- # turn on the timers as appropriate
- movgs gr0,timerh
- movgs gr0,timerl
- movgs gr0,timerd
- movsg hsr0,gr4
- sethi.p %hi(HSR0_ETMI),gr5
- setlo %lo(HSR0_ETMI),gr5
- or gr4,gr5,gr4
- movgs gr4,hsr0
-
- # clear the TLB entry cache
- movgs gr0,iamlr1
- movgs gr0,iampr1
- movgs gr0,damlr1
- movgs gr0,dampr1
-
- # clear the PGE cache
- sethi.p %hi(__flush_tlb_all),gr4
- setlo %lo(__flush_tlb_all),gr4
- jmpl @(gr4,gr0)
+++ /dev/null
-/* head-uc-fr401.S: FR401/3/5 uc-linux specific bits of initialisation
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/linkage.h>
-#include <asm/ptrace.h>
-#include <asm/page.h>
-#include <asm/spr-regs.h>
-#include <asm/mb86943a.h>
-#include "head.inc"
-
-
-#define __400_DBR0 0xfe000e00
-#define __400_DBR1 0xfe000e08
-#define __400_DBR2 0xfe000e10 /* not on FR401 */
-#define __400_DBR3 0xfe000e18 /* not on FR401 */
-#define __400_DAM0 0xfe000f00
-#define __400_DAM1 0xfe000f08
-#define __400_DAM2 0xfe000f10 /* not on FR401 */
-#define __400_DAM3 0xfe000f18 /* not on FR401 */
-#define __400_LGCR 0xfe000010
-#define __400_LCR 0xfe000100
-#define __400_LSBR 0xfe000c00
-
- __INIT
- .balign 4
-
-###############################################################################
-#
-# describe the position and layout of the SDRAM controller registers
-#
-# ENTRY: EXIT:
-# GR5 - cacheline size
-# GR11 - displacement of 2nd SDRAM addr reg from GR14
-# GR12 - displacement of 3rd SDRAM addr reg from GR14
-# GR13 - displacement of 4th SDRAM addr reg from GR14
-# GR14 - address of 1st SDRAM addr reg
-# GR15 - amount to shift address by to match SDRAM addr reg
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-# CC0 - T if DBR0 is present
-# CC1 - T if DBR1 is present
-# CC2 - T if DBR2 is present (not FR401/FR401A)
-# CC3 - T if DBR3 is present (not FR401/FR401A)
-#
-###############################################################################
- .globl __head_fr401_describe_sdram
-__head_fr401_describe_sdram:
- sethi.p %hi(__400_DBR0),gr14
- setlo %lo(__400_DBR0),gr14
- setlos.p #__400_DBR1-__400_DBR0,gr11
- setlos #__400_DBR2-__400_DBR0,gr12
- setlos.p #__400_DBR3-__400_DBR0,gr13
- setlos #32,gr5 ; cacheline size
- setlos.p #0,gr15 ; amount to shift addr reg by
-
- # specify which DBR regs are present
- setlos #0x00ff,gr4
- movgs gr4,cccr
- movsg psr,gr3 ; check for FR401/FR401A
- srli gr3,#25,gr3
- subicc gr3,#0x20>>1,gr0,icc0
- bnelr icc0,#1
- setlos #0x000f,gr4
- movgs gr4,cccr
- bralr
-
-###############################################################################
-#
-# rearrange the bus controller registers
-#
-# ENTRY: EXIT:
-# GR26 &__head_reference [saved]
-# GR30 LED address revised LED address
-#
-###############################################################################
- .globl __head_fr401_set_busctl
-__head_fr401_set_busctl:
- sethi.p %hi(__400_LGCR),gr4
- setlo %lo(__400_LGCR),gr4
- sethi.p %hi(__400_LSBR),gr10
- setlo %lo(__400_LSBR),gr10
- sethi.p %hi(__400_LCR),gr11
- setlo %lo(__400_LCR),gr11
-
- # set the bus controller
- ldi @(gr4,#0),gr5
- ori gr5,#0xff,gr5 ; make sure all chip-selects are enabled
- sti gr5,@(gr4,#0)
-
- sethi.p %hi(__region_CS1),gr4
- setlo %lo(__region_CS1),gr4
- sethi.p %hi(__region_CS1_M),gr5
- setlo %lo(__region_CS1_M),gr5
- sethi.p %hi(__region_CS1_C),gr6
- setlo %lo(__region_CS1_C),gr6
- sti gr4,@(gr10,#1*0x08)
- sti gr5,@(gr10,#1*0x08+0x100)
- sti gr6,@(gr11,#1*0x08)
- sethi.p %hi(__region_CS2),gr4
- setlo %lo(__region_CS2),gr4
- sethi.p %hi(__region_CS2_M),gr5
- setlo %lo(__region_CS2_M),gr5
- sethi.p %hi(__region_CS2_C),gr6
- setlo %lo(__region_CS2_C),gr6
- sti gr4,@(gr10,#2*0x08)
- sti gr5,@(gr10,#2*0x08+0x100)
- sti gr6,@(gr11,#2*0x08)
- sethi.p %hi(__region_CS3),gr4
- setlo %lo(__region_CS3),gr4
- sethi.p %hi(__region_CS3_M),gr5
- setlo %lo(__region_CS3_M),gr5
- sethi.p %hi(__region_CS3_C),gr6
- setlo %lo(__region_CS3_C),gr6
- sti gr4,@(gr10,#3*0x08)
- sti gr5,@(gr10,#3*0x08+0x100)
- sti gr6,@(gr11,#3*0x08)
- sethi.p %hi(__region_CS4),gr4
- setlo %lo(__region_CS4),gr4
- sethi.p %hi(__region_CS4_M),gr5
- setlo %lo(__region_CS4_M),gr5
- sethi.p %hi(__region_CS4_C),gr6
- setlo %lo(__region_CS4_C),gr6
- sti gr4,@(gr10,#4*0x08)
- sti gr5,@(gr10,#4*0x08+0x100)
- sti gr6,@(gr11,#4*0x08)
- sethi.p %hi(__region_CS5),gr4
- setlo %lo(__region_CS5),gr4
- sethi.p %hi(__region_CS5_M),gr5
- setlo %lo(__region_CS5_M),gr5
- sethi.p %hi(__region_CS5_C),gr6
- setlo %lo(__region_CS5_C),gr6
- sti gr4,@(gr10,#5*0x08)
- sti gr5,@(gr10,#5*0x08+0x100)
- sti gr6,@(gr11,#5*0x08)
- sethi.p %hi(__region_CS6),gr4
- setlo %lo(__region_CS6),gr4
- sethi.p %hi(__region_CS6_M),gr5
- setlo %lo(__region_CS6_M),gr5
- sethi.p %hi(__region_CS6_C),gr6
- setlo %lo(__region_CS6_C),gr6
- sti gr4,@(gr10,#6*0x08)
- sti gr5,@(gr10,#6*0x08+0x100)
- sti gr6,@(gr11,#6*0x08)
- sethi.p %hi(__region_CS7),gr4
- setlo %lo(__region_CS7),gr4
- sethi.p %hi(__region_CS7_M),gr5
- setlo %lo(__region_CS7_M),gr5
- sethi.p %hi(__region_CS7_C),gr6
- setlo %lo(__region_CS7_C),gr6
- sti gr4,@(gr10,#7*0x08)
- sti gr5,@(gr10,#7*0x08+0x100)
- sti gr6,@(gr11,#7*0x08)
- membar
- bar
-
- # adjust LED bank address
- sethi.p %hi(LED_ADDR - 0x20000000 +__region_CS2),gr30
- setlo %lo(LED_ADDR - 0x20000000 +__region_CS2),gr30
- bralr
-
-###############################################################################
-#
-# determine the total SDRAM size
-#
-# ENTRY: EXIT:
-# GR25 - SDRAM size
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-#
-###############################################################################
- .globl __head_fr401_survey_sdram
-__head_fr401_survey_sdram:
- sethi.p %hi(__400_DAM0),gr11
- setlo %lo(__400_DAM0),gr11
- sethi.p %hi(__400_DBR0),gr12
- setlo %lo(__400_DBR0),gr12
-
- sethi.p %hi(0xfe000000),gr17 ; unused SDRAM DBR value
- setlo %lo(0xfe000000),gr17
- setlos #0,gr25
-
- ldi @(gr12,#0x00),gr4 ; DAR0
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS0
- ldi @(gr11,#0x00),gr6 ; DAM0: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS0:
-
- ldi @(gr12,#0x08),gr4 ; DAR1
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS1
- ldi @(gr11,#0x08),gr6 ; DAM1: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS1:
-
- # FR401/FR401A does not have DCS2/3
- movsg psr,gr3
- srli gr3,#25,gr3
- subicc gr3,#0x20>>1,gr0,icc0
- beq icc0,#0,__head_no_DCS3
-
- ldi @(gr12,#0x10),gr4 ; DAR2
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS2
- ldi @(gr11,#0x10),gr6 ; DAM2: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS2:
-
- ldi @(gr12,#0x18),gr4 ; DAR3
- subcc gr4,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS3
- ldi @(gr11,#0x18),gr6 ; DAM3: bits 31:20 match addr 31:20
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS3:
- bralr
-
-###############################################################################
-#
-# set the protection map with the I/DAMPR registers
-#
-# ENTRY: EXIT:
-# GR25 SDRAM size [saved]
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-#
-###############################################################################
- .globl __head_fr401_set_protection
-__head_fr401_set_protection:
- movsg lr,gr27
-
- # set the I/O region protection registers for FR401/3/5
- sethi.p %hi(__region_IO),gr5
- setlo %lo(__region_IO),gr5
- ori gr5,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5
- movgs gr0,iampr7
- movgs gr5,dampr7 ; General I/O tile
-
- # need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible
- # - start with the highest numbered registers
- sethi.p %hi(__kernel_image_end),gr8
- setlo %lo(__kernel_image_end),gr8
- sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap
- setlo %lo(32768),gr4
- add gr8,gr4,gr8
- sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB
- setlo %lo(1024*2048-1),gr4
- add.p gr8,gr4,gr8
- not gr4,gr4
- and gr8,gr4,gr8
-
- sethi.p %hi(__page_offset),gr9
- setlo %lo(__page_offset),gr9
- add gr9,gr25,gr9
-
- # GR8 = base of uncovered RAM
- # GR9 = top of uncovered RAM
-
-#ifdef CONFIG_MB93093_PDK
- sethi.p %hi(__region_CS2),gr4
- setlo %lo(__region_CS2),gr4
- ori gr4,#xAMPRx_SS_1Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr4
- movgs gr4,dampr6
- movgs gr0,iampr6
-#else
- call __head_split_region
- movgs gr4,iampr6
- movgs gr5,dampr6
-#endif
- call __head_split_region
- movgs gr4,iampr5
- movgs gr5,dampr5
- call __head_split_region
- movgs gr4,iampr4
- movgs gr5,dampr4
- call __head_split_region
- movgs gr4,iampr3
- movgs gr5,dampr3
- call __head_split_region
- movgs gr4,iampr2
- movgs gr5,dampr2
- call __head_split_region
- movgs gr4,iampr1
- movgs gr5,dampr1
-
- # cover kernel core image with kernel-only segment
- sethi.p %hi(__page_offset),gr8
- setlo %lo(__page_offset),gr8
- call __head_split_region
-
-#ifdef CONFIG_PROTECT_KERNEL
- ori.p gr4,#xAMPRx_S_KERNEL,gr4
- ori gr5,#xAMPRx_S_KERNEL,gr5
-#endif
-
- movgs gr4,iampr0
- movgs gr5,dampr0
- jmpl @(gr27,gr0)
+++ /dev/null
-/* head-uc-fr451.S: FR451 uc-linux specific bits of initialisation
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/linkage.h>
-#include <asm/ptrace.h>
-#include <asm/page.h>
-#include <asm/spr-regs.h>
-#include <asm/mb86943a.h>
-#include "head.inc"
-
-
-#define __400_DBR0 0xfe000e00
-#define __400_DBR1 0xfe000e08
-#define __400_DBR2 0xfe000e10
-#define __400_DBR3 0xfe000e18
-#define __400_DAM0 0xfe000f00
-#define __400_DAM1 0xfe000f08
-#define __400_DAM2 0xfe000f10
-#define __400_DAM3 0xfe000f18
-#define __400_LGCR 0xfe000010
-#define __400_LCR 0xfe000100
-#define __400_LSBR 0xfe000c00
-
- __INIT
- .balign 4
-
-###############################################################################
-#
-# set the protection map with the I/DAMPR registers
-#
-# ENTRY: EXIT:
-# GR25 SDRAM size [saved]
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-#
-###############################################################################
- .globl __head_fr451_set_protection
-__head_fr451_set_protection:
- movsg lr,gr27
-
- movgs gr0,dampr10
- movgs gr0,damlr10
- movgs gr0,dampr9
- movgs gr0,damlr9
- movgs gr0,dampr8
- movgs gr0,damlr8
-
- # set the I/O region protection registers for FR401/3/5
- sethi.p %hi(__region_IO),gr5
- setlo %lo(__region_IO),gr5
- sethi.p %hi(0x1fffffff),gr7
- setlo %lo(0x1fffffff),gr7
- ori gr5,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5
- movgs gr5,dampr11 ; General I/O tile
- movgs gr7,damlr11
-
- # need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible
- # - start with the highest numbered registers
- sethi.p %hi(__kernel_image_end),gr8
- setlo %lo(__kernel_image_end),gr8
- sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap
- setlo %lo(32768),gr4
- add gr8,gr4,gr8
- sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB
- setlo %lo(1024*2048-1),gr4
- add.p gr8,gr4,gr8
- not gr4,gr4
- and gr8,gr4,gr8
-
- sethi.p %hi(__page_offset),gr9
- setlo %lo(__page_offset),gr9
- add gr9,gr25,gr9
-
- sethi.p %hi(0xffffc000),gr11
- setlo %lo(0xffffc000),gr11
-
- # GR8 = base of uncovered RAM
- # GR9 = top of uncovered RAM
- # GR11 = xAMLR mask
- LEDS 0x3317
- call __head_split_region
- movgs gr4,iampr7
- movgs gr6,iamlr7
- movgs gr5,dampr7
- movgs gr7,damlr7
-
- LEDS 0x3316
- call __head_split_region
- movgs gr4,iampr6
- movgs gr6,iamlr6
- movgs gr5,dampr6
- movgs gr7,damlr6
-
- LEDS 0x3315
- call __head_split_region
- movgs gr4,iampr5
- movgs gr6,iamlr5
- movgs gr5,dampr5
- movgs gr7,damlr5
-
- LEDS 0x3314
- call __head_split_region
- movgs gr4,iampr4
- movgs gr6,iamlr4
- movgs gr5,dampr4
- movgs gr7,damlr4
-
- LEDS 0x3313
- call __head_split_region
- movgs gr4,iampr3
- movgs gr6,iamlr3
- movgs gr5,dampr3
- movgs gr7,damlr3
-
- LEDS 0x3312
- call __head_split_region
- movgs gr4,iampr2
- movgs gr6,iamlr2
- movgs gr5,dampr2
- movgs gr7,damlr2
-
- LEDS 0x3311
- call __head_split_region
- movgs gr4,iampr1
- movgs gr6,iamlr1
- movgs gr5,dampr1
- movgs gr7,damlr1
-
- # cover kernel core image with kernel-only segment
- LEDS 0x3310
- sethi.p %hi(__page_offset),gr8
- setlo %lo(__page_offset),gr8
- call __head_split_region
-
-#ifdef CONFIG_PROTECT_KERNEL
- ori.p gr4,#xAMPRx_S_KERNEL,gr4
- ori gr5,#xAMPRx_S_KERNEL,gr5
-#endif
-
- movgs gr4,iampr0
- movgs gr6,iamlr0
- movgs gr5,dampr0
- movgs gr7,damlr0
-
- # start in TLB context 0 with no page tables
- movgs gr0,cxnr
- movgs gr0,ttbr
-
- # the FR451 also has an extra trap base register
- movsg tbr,gr4
- movgs gr4,btbr
-
- # turn on the timers as appropriate
- movgs gr0,timerh
- movgs gr0,timerl
- movgs gr0,timerd
- movsg hsr0,gr4
- sethi.p %hi(HSR0_ETMI),gr5
- setlo %lo(HSR0_ETMI),gr5
- or gr4,gr5,gr4
- movgs gr4,hsr0
-
- LEDS 0x3300
- jmpl @(gr27,gr0)
+++ /dev/null
-/* head-uc-fr555.S: FR555 uc-linux specific bits of initialisation
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/linkage.h>
-#include <asm/ptrace.h>
-#include <asm/page.h>
-#include <asm/spr-regs.h>
-#include <asm/mb86943a.h>
-#include "head.inc"
-
-
-#define __551_DARS0 0xfeff0100
-#define __551_DARS1 0xfeff0104
-#define __551_DARS2 0xfeff0108
-#define __551_DARS3 0xfeff010c
-#define __551_DAMK0 0xfeff0110
-#define __551_DAMK1 0xfeff0114
-#define __551_DAMK2 0xfeff0118
-#define __551_DAMK3 0xfeff011c
-#define __551_LCR 0xfeff1100
-#define __551_LSBR 0xfeff1c00
-
- __INIT
- .balign 4
-
-###############################################################################
-#
-# describe the position and layout of the SDRAM controller registers
-#
-# ENTRY: EXIT:
-# GR5 - cacheline size
-# GR11 - displacement of 2nd SDRAM addr reg from GR14
-# GR12 - displacement of 3rd SDRAM addr reg from GR14
-# GR13 - displacement of 4th SDRAM addr reg from GR14
-# GR14 - address of 1st SDRAM addr reg
-# GR15 - amount to shift address by to match SDRAM addr reg
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-# CC0 - T if DARS0 is present
-# CC1 - T if DARS1 is present
-# CC2 - T if DARS2 is present
-# CC3 - T if DARS3 is present
-#
-###############################################################################
- .globl __head_fr555_describe_sdram
-__head_fr555_describe_sdram:
- sethi.p %hi(__551_DARS0),gr14
- setlo %lo(__551_DARS0),gr14
- setlos.p #__551_DARS1-__551_DARS0,gr11
- setlos #__551_DARS2-__551_DARS0,gr12
- setlos.p #__551_DARS3-__551_DARS0,gr13
- setlos #64,gr5 ; cacheline size
- setlos #20,gr15 ; amount to shift addr by
- setlos #0x00ff,gr4
- movgs gr4,cccr ; extant DARS/DAMK regs
- bralr
-
-###############################################################################
-#
-# rearrange the bus controller registers
-#
-# ENTRY: EXIT:
-# GR26 &__head_reference [saved]
-# GR30 LED address revised LED address
-#
-###############################################################################
- .globl __head_fr555_set_busctl
-__head_fr555_set_busctl:
- LEDS 0x100f
- sethi.p %hi(__551_LSBR),gr10
- setlo %lo(__551_LSBR),gr10
- sethi.p %hi(__551_LCR),gr11
- setlo %lo(__551_LCR),gr11
-
- # set the bus controller
- sethi.p %hi(__region_CS1),gr4
- setlo %lo(__region_CS1),gr4
- sethi.p %hi(__region_CS1_M),gr5
- setlo %lo(__region_CS1_M),gr5
- sethi.p %hi(__region_CS1_C),gr6
- setlo %lo(__region_CS1_C),gr6
- sti gr4,@(gr10,#1*0x08)
- sti gr5,@(gr10,#1*0x08+0x100)
- sti gr6,@(gr11,#1*0x08)
- sethi.p %hi(__region_CS2),gr4
- setlo %lo(__region_CS2),gr4
- sethi.p %hi(__region_CS2_M),gr5
- setlo %lo(__region_CS2_M),gr5
- sethi.p %hi(__region_CS2_C),gr6
- setlo %lo(__region_CS2_C),gr6
- sti gr4,@(gr10,#2*0x08)
- sti gr5,@(gr10,#2*0x08+0x100)
- sti gr6,@(gr11,#2*0x08)
- sethi.p %hi(__region_CS3),gr4
- setlo %lo(__region_CS3),gr4
- sethi.p %hi(__region_CS3_M),gr5
- setlo %lo(__region_CS3_M),gr5
- sethi.p %hi(__region_CS3_C),gr6
- setlo %lo(__region_CS3_C),gr6
- sti gr4,@(gr10,#3*0x08)
- sti gr5,@(gr10,#3*0x08+0x100)
- sti gr6,@(gr11,#3*0x08)
- sethi.p %hi(__region_CS4),gr4
- setlo %lo(__region_CS4),gr4
- sethi.p %hi(__region_CS4_M),gr5
- setlo %lo(__region_CS4_M),gr5
- sethi.p %hi(__region_CS4_C),gr6
- setlo %lo(__region_CS4_C),gr6
- sti gr4,@(gr10,#4*0x08)
- sti gr5,@(gr10,#4*0x08+0x100)
- sti gr6,@(gr11,#4*0x08)
- sethi.p %hi(__region_CS5),gr4
- setlo %lo(__region_CS5),gr4
- sethi.p %hi(__region_CS5_M),gr5
- setlo %lo(__region_CS5_M),gr5
- sethi.p %hi(__region_CS5_C),gr6
- setlo %lo(__region_CS5_C),gr6
- sti gr4,@(gr10,#5*0x08)
- sti gr5,@(gr10,#5*0x08+0x100)
- sti gr6,@(gr11,#5*0x08)
- sethi.p %hi(__region_CS6),gr4
- setlo %lo(__region_CS6),gr4
- sethi.p %hi(__region_CS6_M),gr5
- setlo %lo(__region_CS6_M),gr5
- sethi.p %hi(__region_CS6_C),gr6
- setlo %lo(__region_CS6_C),gr6
- sti gr4,@(gr10,#6*0x08)
- sti gr5,@(gr10,#6*0x08+0x100)
- sti gr6,@(gr11,#6*0x08)
- sethi.p %hi(__region_CS7),gr4
- setlo %lo(__region_CS7),gr4
- sethi.p %hi(__region_CS7_M),gr5
- setlo %lo(__region_CS7_M),gr5
- sethi.p %hi(__region_CS7_C),gr6
- setlo %lo(__region_CS7_C),gr6
- sti gr4,@(gr10,#7*0x08)
- sti gr5,@(gr10,#7*0x08+0x100)
- sti gr6,@(gr11,#7*0x08)
- membar
- bar
-
- # adjust LED bank address
-#ifdef CONFIG_MB93091_VDK
- sethi.p %hi(LED_ADDR - 0x20000000 +__region_CS2),gr30
- setlo %lo(LED_ADDR - 0x20000000 +__region_CS2),gr30
-#endif
- bralr
-
-###############################################################################
-#
-# determine the total SDRAM size
-#
-# ENTRY: EXIT:
-# GR25 - SDRAM size
-# GR26 &__head_reference [saved]
-# GR30 LED address [saved]
-#
-###############################################################################
- .globl __head_fr555_survey_sdram
-__head_fr555_survey_sdram:
- sethi.p %hi(__551_DAMK0),gr11
- setlo %lo(__551_DAMK0),gr11
- sethi.p %hi(__551_DARS0),gr12
- setlo %lo(__551_DARS0),gr12
-
- sethi.p %hi(0xfff),gr17 ; unused SDRAM AMK value
- setlo %lo(0xfff),gr17
- setlos #0,gr25
-
- ldi @(gr11,#0x00),gr6 ; DAMK0: bits 11:0 match addr 11:0
- subcc gr6,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS0
- ldi @(gr12,#0x00),gr4 ; DARS0
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS0:
-
- ldi @(gr11,#0x04),gr6 ; DAMK1: bits 11:0 match addr 11:0
- subcc gr6,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS1
- ldi @(gr12,#0x04),gr4 ; DARS1
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS1:
-
- ldi @(gr11,#0x8),gr6 ; DAMK2: bits 11:0 match addr 11:0
- subcc gr6,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS2
- ldi @(gr12,#0x8),gr4 ; DARS2
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS2:
-
- ldi @(gr11,#0xc),gr6 ; DAMK3: bits 11:0 match addr 11:0
- subcc gr6,gr17,gr0,icc0
- beq icc0,#0,__head_no_DCS3
- ldi @(gr12,#0xc),gr4 ; DARS3
- add gr25,gr6,gr25
- addi gr25,#1,gr25
-__head_no_DCS3:
-
- slli gr25,#20,gr25 ; shift [11:0] -> [31:20]
- bralr
-
-###############################################################################
-#
-# set the protection map with the I/DAMPR registers
-#
-# ENTRY: EXIT:
-# GR25 SDRAM size saved
-# GR30 LED address saved
-#
-###############################################################################
- .globl __head_fr555_set_protection
-__head_fr555_set_protection:
- movsg lr,gr27
-
- sethi.p %hi(0xfff00000),gr11
- setlo %lo(0xfff00000),gr11
-
- # set the I/O region protection registers for FR555
- sethi.p %hi(__region_IO),gr7
- setlo %lo(__region_IO),gr7
- ori gr7,#xAMPRx_SS_512Mb|xAMPRx_S_KERNEL|xAMPRx_C|xAMPRx_V,gr5
- movgs gr0,iampr15
- movgs gr0,iamlr15
- movgs gr5,dampr15
- movgs gr7,damlr15
-
- # need to tile the remaining IAMPR/DAMPR registers to cover as much of the RAM as possible
- # - start with the highest numbered registers
- sethi.p %hi(__kernel_image_end),gr8
- setlo %lo(__kernel_image_end),gr8
- sethi.p %hi(32768),gr4 ; allow for a maximal allocator bitmap
- setlo %lo(32768),gr4
- add gr8,gr4,gr8
- sethi.p %hi(1024*2048-1),gr4 ; round up to nearest 2MiB
- setlo %lo(1024*2048-1),gr4
- add.p gr8,gr4,gr8
- not gr4,gr4
- and gr8,gr4,gr8
-
- sethi.p %hi(__page_offset),gr9
- setlo %lo(__page_offset),gr9
- add gr9,gr25,gr9
-
- # GR8 = base of uncovered RAM
- # GR9 = top of uncovered RAM
- # GR11 - mask for DAMLR/IAMLR regs
- #
- call __head_split_region
- movgs gr4,iampr14
- movgs gr6,iamlr14
- movgs gr5,dampr14
- movgs gr7,damlr14
- call __head_split_region
- movgs gr4,iampr13
- movgs gr6,iamlr13
- movgs gr5,dampr13
- movgs gr7,damlr13
- call __head_split_region
- movgs gr4,iampr12
- movgs gr6,iamlr12
- movgs gr5,dampr12
- movgs gr7,damlr12
- call __head_split_region
- movgs gr4,iampr11
- movgs gr6,iamlr11
- movgs gr5,dampr11
- movgs gr7,damlr11
- call __head_split_region
- movgs gr4,iampr10
- movgs gr6,iamlr10
- movgs gr5,dampr10
- movgs gr7,damlr10
- call __head_split_region
- movgs gr4,iampr9
- movgs gr6,iamlr9
- movgs gr5,dampr9
- movgs gr7,damlr9
- call __head_split_region
- movgs gr4,iampr8
- movgs gr6,iamlr8
- movgs gr5,dampr8
- movgs gr7,damlr8
-
- call __head_split_region
- movgs gr4,iampr7
- movgs gr6,iamlr7
- movgs gr5,dampr7
- movgs gr7,damlr7
- call __head_split_region
- movgs gr4,iampr6
- movgs gr6,iamlr6
- movgs gr5,dampr6
- movgs gr7,damlr6
- call __head_split_region
- movgs gr4,iampr5
- movgs gr6,iamlr5
- movgs gr5,dampr5
- movgs gr7,damlr5
- call __head_split_region
- movgs gr4,iampr4
- movgs gr6,iamlr4
- movgs gr5,dampr4
- movgs gr7,damlr4
- call __head_split_region
- movgs gr4,iampr3
- movgs gr6,iamlr3
- movgs gr5,dampr3
- movgs gr7,damlr3
- call __head_split_region
- movgs gr4,iampr2
- movgs gr6,iamlr2
- movgs gr5,dampr2
- movgs gr7,damlr2
- call __head_split_region
- movgs gr4,iampr1
- movgs gr6,iamlr1
- movgs gr5,dampr1
- movgs gr7,damlr1
-
- # cover kernel core image with kernel-only segment
- sethi.p %hi(__page_offset),gr8
- setlo %lo(__page_offset),gr8
- call __head_split_region
-
-#ifdef CONFIG_PROTECT_KERNEL
- ori.p gr4,#xAMPRx_S_KERNEL,gr4
- ori gr5,#xAMPRx_S_KERNEL,gr5
-#endif
-
- movgs gr4,iampr0
- movgs gr6,iamlr0
- movgs gr5,dampr0
- movgs gr7,damlr0
- jmpl @(gr27,gr0)
+++ /dev/null
-/* head.S: kernel entry point for FR-V kernel
- *
- * Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/linkage.h>
-#include <asm/thread_info.h>
-#include <asm/ptrace.h>
-#include <asm/page.h>
-#include <asm/spr-regs.h>
-#include <asm/mb86943a.h>
-#include <asm/cache.h>
-#include "head.inc"
-
-###############################################################################
-#
-# void _boot(unsigned long magic, char *command_line) __attribute__((noreturn))
-#
-# - if magic is 0xdead1eaf, then command_line is assumed to point to the kernel
-# command line string
-#
-###############################################################################
- __HEAD
- .balign 4
-
- .globl _boot, __head_reference
- .type _boot,@function
-_boot:
-__head_reference:
- sethi.p %hi(LED_ADDR),gr30
- setlo %lo(LED_ADDR),gr30
-
- LEDS 0x0000
-
- # calculate reference address for PC-relative stuff
- call 0f
-0: movsg lr,gr26
- addi gr26,#__head_reference-0b,gr26
-
- # invalidate and disable both of the caches and turn off the memory access checking
- dcef @(gr0,gr0),1
- bar
-
- sethi.p %hi(~(HSR0_ICE|HSR0_DCE|HSR0_CBM|HSR0_EIMMU|HSR0_EDMMU)),gr4
- setlo %lo(~(HSR0_ICE|HSR0_DCE|HSR0_CBM|HSR0_EIMMU|HSR0_EDMMU)),gr4
- movsg hsr0,gr5
- and gr4,gr5,gr5
- movgs gr5,hsr0
- movsg hsr0,gr5
-
- LEDS 0x0001
-
- icei @(gr0,gr0),1
- dcei @(gr0,gr0),1
- bar
-
- # turn the instruction cache back on
- sethi.p %hi(HSR0_ICE),gr4
- setlo %lo(HSR0_ICE),gr4
- movsg hsr0,gr5
- or gr4,gr5,gr5
- movgs gr5,hsr0
- movsg hsr0,gr5
-
- bar
-
- LEDS 0x0002
-
- # retrieve the parameters (including command line) before we overwrite them
- sethi.p %hi(0xdead1eaf),gr7
- setlo %lo(0xdead1eaf),gr7
- subcc gr7,gr8,gr0,icc0
- bne icc0,#0,__head_no_parameters
-
- sethi.p %hi(redboot_command_line-1),gr6
- setlo %lo(redboot_command_line-1),gr6
- sethi.p %hi(__head_reference),gr4
- setlo %lo(__head_reference),gr4
- sub gr6,gr4,gr6
- add.p gr6,gr26,gr6
- subi gr9,#1,gr9
- setlos.p #511,gr4
- setlos #1,gr5
-
-__head_copy_cmdline:
- ldubu.p @(gr9,gr5),gr16
- subicc gr4,#1,gr4,icc0
- stbu.p gr16,@(gr6,gr5)
- subicc gr16,#0,gr0,icc1
- bls icc0,#0,__head_end_cmdline
- bne icc1,#1,__head_copy_cmdline
-__head_end_cmdline:
- stbu gr0,@(gr6,gr5)
-__head_no_parameters:
-
-###############################################################################
-#
-# we need to relocate the SDRAM to 0x00000000 (linux) or 0xC0000000 (uClinux)
-# - note that we're going to have to run entirely out of the icache whilst
-# fiddling with the SDRAM controller registers
-#
-###############################################################################
-#ifdef CONFIG_MMU
- call __head_fr451_describe_sdram
-
-#else
- movsg psr,gr5
- srli gr5,#28,gr5
- subicc gr5,#3,gr0,icc0
- beq icc0,#0,__head_fr551_sdram
-
- call __head_fr401_describe_sdram
- bra __head_do_sdram
-
-__head_fr551_sdram:
- call __head_fr555_describe_sdram
- LEDS 0x000d
-
-__head_do_sdram:
-#endif
-
- # preload the registers with invalid values in case any DBR/DARS are marked not present
- sethi.p %hi(0xfe000000),gr17 ; unused SDRAM DBR value
- setlo %lo(0xfe000000),gr17
- or.p gr17,gr0,gr20
- or gr17,gr0,gr21
- or.p gr17,gr0,gr22
- or gr17,gr0,gr23
-
- # consult the SDRAM controller CS address registers
- cld @(gr14,gr0 ),gr20, cc0,#1 ; DBR0 / DARS0
- cld @(gr14,gr11),gr21, cc1,#1 ; DBR1 / DARS1
- cld @(gr14,gr12),gr22, cc2,#1 ; DBR2 / DARS2
- cld.p @(gr14,gr13),gr23, cc3,#1 ; DBR3 / DARS3
-
- sll gr20,gr15,gr20 ; shift values up for FR551
- sll gr21,gr15,gr21
- sll gr22,gr15,gr22
- sll gr23,gr15,gr23
-
- LEDS 0x0003
-
- # assume the lowest valid CS line to be the SDRAM base and get its address
- subcc gr20,gr17,gr0,icc0
- subcc.p gr21,gr17,gr0,icc1
- subcc gr22,gr17,gr0,icc2
- subcc.p gr23,gr17,gr0,icc3
- ckne icc0,cc4 ; T if DBR0 != 0xfe000000
- ckne icc1,cc5
- ckne icc2,cc6
- ckne icc3,cc7
- cor gr23,gr0,gr24, cc7,#1 ; GR24 = SDRAM base
- cor gr22,gr0,gr24, cc6,#1
- cor gr21,gr0,gr24, cc5,#1
- cor gr20,gr0,gr24, cc4,#1
-
- # calculate the displacement required to get the SDRAM into the right place in memory
- sethi.p %hi(__sdram_base),gr16
- setlo %lo(__sdram_base),gr16
- sub gr16,gr24,gr16 ; delta = __sdram_base - DBRx
-
- # calculate the new values to go in the controller regs
- cadd.p gr20,gr16,gr20, cc4,#1 ; DCS#0 (new) = DCS#0 (old) + delta
- cadd gr21,gr16,gr21, cc5,#1
- cadd.p gr22,gr16,gr22, cc6,#1
- cadd gr23,gr16,gr23, cc7,#1
-
- srl gr20,gr15,gr20 ; shift values down for FR551
- srl gr21,gr15,gr21
- srl gr22,gr15,gr22
- srl gr23,gr15,gr23
-
- # work out the address at which the reg updater resides and lock it into icache
- # also work out the address the updater will jump to when finished
- sethi.p %hi(__head_move_sdram-__head_reference),gr18
- setlo %lo(__head_move_sdram-__head_reference),gr18
- sethi.p %hi(__head_sdram_moved-__head_reference),gr19
- setlo %lo(__head_sdram_moved-__head_reference),gr19
- add.p gr18,gr26,gr18
- add gr19,gr26,gr19
- add.p gr19,gr16,gr19 ; moved = addr + (__sdram_base - DBRx)
- add gr18,gr5,gr4 ; two cachelines probably required
-
- icpl gr18,gr0,#1 ; load and lock the cachelines
- icpl gr4,gr0,#1
- LEDS 0x0004
- membar
- bar
- jmpl @(gr18,gr0)
-
- .balign L1_CACHE_BYTES
-__head_move_sdram:
- cst gr20,@(gr14,gr0 ), cc4,#1
- cst gr21,@(gr14,gr11), cc5,#1
- cst gr22,@(gr14,gr12), cc6,#1
- cst gr23,@(gr14,gr13), cc7,#1
- cld @(gr14,gr0 ),gr20, cc4,#1
- cld @(gr14,gr11),gr21, cc5,#1
- cld @(gr14,gr12),gr22, cc4,#1
- cld @(gr14,gr13),gr23, cc7,#1
- bar
- membar
- jmpl @(gr19,gr0)
-
- .balign L1_CACHE_BYTES
-__head_sdram_moved:
- icul gr18
- add gr18,gr5,gr4
- icul gr4
- icei @(gr0,gr0),1
- dcei @(gr0,gr0),1
-
- LEDS 0x0005
-
- # recalculate reference address
- call 0f
-0: movsg lr,gr26
- addi gr26,#__head_reference-0b,gr26
-
-
-###############################################################################
-#
-# move the kernel image down to the bottom of the SDRAM
-#
-###############################################################################
- sethi.p %hi(__kernel_image_size_no_bss+15),gr4
- setlo %lo(__kernel_image_size_no_bss+15),gr4
- srli.p gr4,#4,gr4 ; count
- or gr26,gr26,gr16 ; source
-
- sethi.p %hi(__sdram_base),gr17 ; destination
- setlo %lo(__sdram_base),gr17
-
- setlos #8,gr5
- sub.p gr16,gr5,gr16 ; adjust src for LDDU
- sub gr17,gr5,gr17 ; adjust dst for LDDU
-
- sethi.p %hi(__head_move_kernel-__head_reference),gr18
- setlo %lo(__head_move_kernel-__head_reference),gr18
- sethi.p %hi(__head_kernel_moved-__head_reference+__sdram_base),gr19
- setlo %lo(__head_kernel_moved-__head_reference+__sdram_base),gr19
- add gr18,gr26,gr18
- icpl gr18,gr0,#1
- jmpl @(gr18,gr0)
-
- .balign 32
-__head_move_kernel:
- lddu @(gr16,gr5),gr10
- lddu @(gr16,gr5),gr12
- stdu.p gr10,@(gr17,gr5)
- subicc gr4,#1,gr4,icc0
- stdu.p gr12,@(gr17,gr5)
- bhi icc0,#0,__head_move_kernel
- jmpl @(gr19,gr0)
-
- .balign 32
-__head_kernel_moved:
- icul gr18
- icei @(gr0,gr0),1
- dcei @(gr0,gr0),1
-
- LEDS 0x0006
-
- # recalculate reference address
- call 0f
-0: movsg lr,gr26
- addi gr26,#__head_reference-0b,gr26
-
-
-###############################################################################
-#
-# rearrange the iomem map and set the protection registers
-#
-###############################################################################
-
-#ifdef CONFIG_MMU
- LEDS 0x3301
- call __head_fr451_set_busctl
- LEDS 0x3303
- call __head_fr451_survey_sdram
- LEDS 0x3305
- call __head_fr451_set_protection
-
-#else
- movsg psr,gr5
- srli gr5,#PSR_IMPLE_SHIFT,gr5
- subicc gr5,#PSR_IMPLE_FR551,gr0,icc0
- beq icc0,#0,__head_fr555_memmap
- subicc gr5,#PSR_IMPLE_FR451,gr0,icc0
- beq icc0,#0,__head_fr451_memmap
-
- LEDS 0x3101
- call __head_fr401_set_busctl
- LEDS 0x3103
- call __head_fr401_survey_sdram
- LEDS 0x3105
- call __head_fr401_set_protection
- bra __head_done_memmap
-
-__head_fr451_memmap:
- LEDS 0x3301
- call __head_fr401_set_busctl
- LEDS 0x3303
- call __head_fr401_survey_sdram
- LEDS 0x3305
- call __head_fr451_set_protection
- bra __head_done_memmap
-
-__head_fr555_memmap:
- LEDS 0x3501
- call __head_fr555_set_busctl
- LEDS 0x3503
- call __head_fr555_survey_sdram
- LEDS 0x3505
- call __head_fr555_set_protection
-
-__head_done_memmap:
-#endif
- LEDS 0x0007
-
-###############################################################################
-#
-# turn the data cache and MMU on
-# - for the FR451 this'll mean that the window through which the kernel is
-# viewed will change
-#
-###############################################################################
-
-#ifdef CONFIG_MMU
-#define MMUMODE HSR0_EIMMU|HSR0_EDMMU|HSR0_EXMMU|HSR0_EDAT|HSR0_XEDAT
-#else
-#define MMUMODE HSR0_EIMMU|HSR0_EDMMU
-#endif
-
- movsg hsr0,gr5
-
- sethi.p %hi(MMUMODE),gr4
- setlo %lo(MMUMODE),gr4
- or gr4,gr5,gr5
-
-#if defined(CONFIG_FRV_DEFL_CACHE_WTHRU)
- sethi.p %hi(HSR0_DCE|HSR0_CBM_WRITE_THRU),gr4
- setlo %lo(HSR0_DCE|HSR0_CBM_WRITE_THRU),gr4
-#elif defined(CONFIG_FRV_DEFL_CACHE_WBACK)
- sethi.p %hi(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4
- setlo %lo(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4
-#elif defined(CONFIG_FRV_DEFL_CACHE_WBEHIND)
- sethi.p %hi(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4
- setlo %lo(HSR0_DCE|HSR0_CBM_COPY_BACK),gr4
-
- movsg psr,gr6
- srli gr6,#24,gr6
- cmpi gr6,#0x50,icc0 // FR451
- beq icc0,#0,0f
- cmpi gr6,#0x40,icc0 // FR405
- bne icc0,#0,1f
-0:
- # turn off write-allocate
- sethi.p %hi(HSR0_NWA),gr6
- setlo %lo(HSR0_NWA),gr6
- or gr4,gr6,gr4
-1:
-
-#else
-#error No default cache configuration set
-#endif
-
- or gr4,gr5,gr5
- movgs gr5,hsr0
- bar
-
- LEDS 0x0008
-
- sethi.p %hi(__head_mmu_enabled),gr19
- setlo %lo(__head_mmu_enabled),gr19
- jmpl @(gr19,gr0)
-
-__head_mmu_enabled:
- icei @(gr0,gr0),#1
- dcei @(gr0,gr0),#1
-
- LEDS 0x0009
-
-#ifdef CONFIG_MMU
- call __head_fr451_finalise_protection
-#endif
-
- LEDS 0x000a
-
-###############################################################################
-#
-# set up the runtime environment
-#
-###############################################################################
-
- # clear the BSS area
- sethi.p %hi(__bss_start),gr4
- setlo %lo(__bss_start),gr4
- sethi.p %hi(_end),gr5
- setlo %lo(_end),gr5
- or.p gr0,gr0,gr18
- or gr0,gr0,gr19
-
-0:
- stdi gr18,@(gr4,#0)
- stdi gr18,@(gr4,#8)
- stdi gr18,@(gr4,#16)
- stdi.p gr18,@(gr4,#24)
- addi gr4,#24,gr4
- subcc gr5,gr4,gr0,icc0
- bhi icc0,#2,0b
-
- LEDS 0x000b
-
- # save the SDRAM details
- sethi.p %hi(__sdram_old_base),gr4
- setlo %lo(__sdram_old_base),gr4
- st gr24,@(gr4,gr0)
-
- sethi.p %hi(__sdram_base),gr5
- setlo %lo(__sdram_base),gr5
- sethi.p %hi(memory_start),gr4
- setlo %lo(memory_start),gr4
- st gr5,@(gr4,gr0)
-
- add gr25,gr5,gr25
- sethi.p %hi(memory_end),gr4
- setlo %lo(memory_end),gr4
- st gr25,@(gr4,gr0)
-
- # point the TBR at the kernel trap table
- sethi.p %hi(__entry_kerneltrap_table),gr4
- setlo %lo(__entry_kerneltrap_table),gr4
- movgs gr4,tbr
-
- # set up the exception frame for init
- sethi.p %hi(__kernel_frame0_ptr),gr28
- setlo %lo(__kernel_frame0_ptr),gr28
- sethi.p %hi(_gp),gr16
- setlo %lo(_gp),gr16
- sethi.p %hi(__entry_usertrap_table),gr4
- setlo %lo(__entry_usertrap_table),gr4
-
- lddi @(gr28,#0),gr28 ; load __frame & current
- ldi.p @(gr29,#4),gr15 ; set current_thread
-
- or gr0,gr0,fp
- or gr28,gr0,sp
-
- sti.p gr4,@(gr28,REG_TBR)
- setlos #ISR_EDE|ISR_DTT_DIVBYZERO|ISR_EMAM_EXCEPTION,gr5
- movgs gr5,isr
-
- # turn on and off various CPU services
- movsg psr,gr22
- sethi.p %hi(#PSR_EM|PSR_EF|PSR_CM|PSR_NEM),gr4
- setlo %lo(#PSR_EM|PSR_EF|PSR_CM|PSR_NEM),gr4
- or gr22,gr4,gr22
- movgs gr22,psr
-
- andi gr22,#~(PSR_PIL|PSR_PS|PSR_S),gr22
- ori gr22,#PSR_ET,gr22
- sti gr22,@(gr28,REG_PSR)
-
-
-###############################################################################
-#
-# set up the registers and jump into the kernel
-#
-###############################################################################
-
- LEDS 0x000c
-
- sethi.p #0xe5e5,gr3
- setlo #0xe5e5,gr3
- or.p gr3,gr0,gr4
- or gr3,gr0,gr5
- or.p gr3,gr0,gr6
- or gr3,gr0,gr7
- or.p gr3,gr0,gr8
- or gr3,gr0,gr9
- or.p gr3,gr0,gr10
- or gr3,gr0,gr11
- or.p gr3,gr0,gr12
- or gr3,gr0,gr13
- or.p gr3,gr0,gr14
- or gr3,gr0,gr17
- or.p gr3,gr0,gr18
- or gr3,gr0,gr19
- or.p gr3,gr0,gr20
- or gr3,gr0,gr21
- or.p gr3,gr0,gr23
- or gr3,gr0,gr24
- or.p gr3,gr0,gr25
- or gr3,gr0,gr26
- or.p gr3,gr0,gr27
-# or gr3,gr0,gr30
- or gr3,gr0,gr31
- movgs gr0,lr
- movgs gr0,lcr
- movgs gr0,ccr
- movgs gr0,cccr
-
- # initialise the virtual interrupt handling
- subcc gr0,gr0,gr0,icc2 /* set Z, clear C */
-
-#ifdef CONFIG_MMU
- movgs gr3,scr2
- movgs gr3,scr3
-#endif
-
- LEDS 0x0fff
-
- # invoke the debugging stub if present
- # - arch/frv/kernel/debug-stub.c will shift control directly to init/main.c
- # (it will not return here)
- break
- .globl __debug_stub_init_break
-__debug_stub_init_break:
-
- # however, if you need to use an ICE, and don't care about using any userspace
- # debugging tools (such as the ptrace syscall), you can just step over the break
- # above and get to the kernel this way
- # look at arch/frv/kernel/debug-stub.c: debug_stub_init() to see what you've missed
- call start_kernel
-
- .globl __head_end
-__head_end:
- .size _boot, .-_boot
-
- # provide a point for GDB to place a break
- .section .text..start,"ax"
- .globl _start
- .balign 4
-_start:
- call _boot
-
- .previous
-###############################################################################
-#
-# split a tile off of the region defined by GR8-GR9
-#
-# ENTRY: EXIT:
-# GR4 - IAMPR value representing tile
-# GR5 - DAMPR value representing tile
-# GR6 - IAMLR value representing tile
-# GR7 - DAMLR value representing tile
-# GR8 region base pointer [saved]
-# GR9 region top pointer updated to exclude new tile
-# GR11 xAMLR mask [saved]
-# GR25 SDRAM size [saved]
-# GR30 LED address [saved]
-#
-# - GR8 and GR9 should be rounded up/down to the nearest megabyte before calling
-#
-###############################################################################
- .globl __head_split_region
- .type __head_split_region,@function
-__head_split_region:
- subcc.p gr9,gr8,gr4,icc0
- setlos #31,gr5
- scan.p gr4,gr0,gr6
- beq icc0,#0,__head_region_empty
- sub.p gr5,gr6,gr6 ; bit number of highest set bit (1MB=>20)
- setlos #1,gr4
- sll.p gr4,gr6,gr4 ; size of region (1 << bitno)
- subi gr6,#17,gr6 ; 1MB => 0x03
- slli.p gr6,#4,gr6 ; 1MB => 0x30
- sub gr9,gr4,gr9 ; move uncovered top down
-
- or gr9,gr6,gr4
- ori gr4,#xAMPRx_S_USER|xAMPRx_C_CACHED|xAMPRx_V,gr4
- or.p gr4,gr0,gr5
-
- and gr4,gr11,gr6
- and.p gr5,gr11,gr7
- bralr
-
-__head_region_empty:
- or.p gr0,gr0,gr4
- or gr0,gr0,gr5
- or.p gr0,gr0,gr6
- or gr0,gr0,gr7
- bralr
- .size __head_split_region, .-__head_split_region
-
-###############################################################################
-#
-# write the 32-bit hex number in GR8 to ttyS0
-#
-###############################################################################
-#if 0
- .globl __head_write_to_ttyS0
- .type __head_write_to_ttyS0,@function
-__head_write_to_ttyS0:
- sethi.p %hi(0xfeff9c00),gr31
- setlo %lo(0xfeff9c00),gr31
- setlos #8,gr20
-
-0: ldubi @(gr31,#5*8),gr21
- andi gr21,#0x60,gr21
- subicc gr21,#0x60,gr21,icc0
- bne icc0,#0,0b
-
-1: srli gr8,#28,gr21
- slli gr8,#4,gr8
-
- addi gr21,#'0',gr21
- subicc gr21,#'9',gr0,icc0
- bls icc0,#2,2f
- addi gr21,#'A'-'0'-10,gr21
-2:
- stbi gr21,@(gr31,#0*8)
- subicc gr20,#1,gr20,icc0
- bhi icc0,#2,1b
-
- setlos #'\r',gr21
- stbi gr21,@(gr31,#0*8)
-
- setlos #'\n',gr21
- stbi gr21,@(gr31,#0*8)
-
-3: ldubi @(gr31,#5*8),gr21
- andi gr21,#0x60,gr21
- subicc gr21,#0x60,gr21,icc0
- bne icc0,#0,3b
- bralr
-
- .size __head_write_to_ttyS0, .-__head_write_to_ttyS0
-#endif
+++ /dev/null
-/* head.inc: head common definitions -*- asm -*-
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
-#if defined(CONFIG_MB93090_MB00)
-#define LED_ADDR (0x21200000+4)
-
-.macro LEDS val
- sethi.p %hi(0xFFC00030),gr3
- setlo %lo(0xFFC00030),gr3
- lduh @(gr3,gr0),gr3
- andicc gr3,#0x100,gr0,icc0
- bne icc0,0,999f
-
- setlos #~\val,gr3
- st gr3,@(gr30,gr0)
- membar
- dcf @(gr30,gr0)
- 999:
-.endm
-
-#elif defined(CONFIG_MB93093_PDK)
-#define LED_ADDR (0x20000023)
-
-.macro LEDS val
- setlos #\val,gr3
- stb gr3,@(gr30,gr0)
- membar
-.endm
-
-#else
-#define LED_ADDR 0
-
-.macro LEDS val
-.endm
-#endif
-
-#ifdef CONFIG_MMU
-__sdram_base = 0x00000000 /* base address to which SDRAM relocated */
-#else
-__sdram_base = __page_offset /* base address to which SDRAM relocated */
-#endif
+++ /dev/null
-/* irq-mb93091.c: MB93091 FPGA interrupt handling
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/irc-regs.h>
-
-#define __reg16(ADDR) (*(volatile unsigned short *)(ADDR))
-
-#define __get_IMR() ({ __reg16(0xffc00004); })
-#define __set_IMR(M) do { __reg16(0xffc00004) = (M); wmb(); } while(0)
-#define __get_IFR() ({ __reg16(0xffc0000c); })
-#define __clr_IFR(M) do { __reg16(0xffc0000c) = ~(M); wmb(); } while(0)
-
-
-/*
- * on-motherboard FPGA PIC operations
- */
-static void frv_fpga_mask(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr |= 1 << (d->irq - IRQ_BASE_FPGA);
-
- __set_IMR(imr);
-}
-
-static void frv_fpga_ack(struct irq_data *d)
-{
- __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA));
-}
-
-static void frv_fpga_mask_ack(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr |= 1 << (d->irq - IRQ_BASE_FPGA);
- __set_IMR(imr);
-
- __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA));
-}
-
-static void frv_fpga_unmask(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr &= ~(1 << (d->irq - IRQ_BASE_FPGA));
-
- __set_IMR(imr);
-}
-
-static struct irq_chip frv_fpga_pic = {
- .name = "mb93091",
- .irq_ack = frv_fpga_ack,
- .irq_mask = frv_fpga_mask,
- .irq_mask_ack = frv_fpga_mask_ack,
- .irq_unmask = frv_fpga_unmask,
-};
-
-/*
- * FPGA PIC interrupt handler
- */
-static irqreturn_t fpga_interrupt(int irq, void *_mask)
-{
- uint16_t imr, mask = (unsigned long) _mask;
-
- imr = __get_IMR();
- mask = mask & ~imr & __get_IFR();
-
- /* poll all the triggered IRQs */
- while (mask) {
- int irq;
-
- asm("scan %1,gr0,%0" : "=r"(irq) : "r"(mask));
- irq = 31 - irq;
- mask &= ~(1 << irq);
-
- generic_handle_irq(IRQ_BASE_FPGA + irq);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * define an interrupt action for each FPGA PIC output
- * - use dev_id to indicate the FPGA PIC input to output mappings
- */
-static struct irqaction fpga_irq[4] = {
- [0] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.0",
- .dev_id = (void *) 0x0028UL,
- },
- [1] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.1",
- .dev_id = (void *) 0x0050UL,
- },
- [2] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.2",
- .dev_id = (void *) 0x1c00UL,
- },
- [3] = {
- .handler = fpga_interrupt,
- .flags = IRQF_SHARED,
- .name = "fpga.3",
- .dev_id = (void *) 0x6386UL,
- }
-};
-
-/*
- * initialise the motherboard FPGA's PIC
- */
-void __init fpga_init(void)
-{
- int irq;
-
- /* all PIC inputs are all set to be low-level driven, apart from the
- * NMI button (15) which is fixed at falling-edge
- */
- __set_IMR(0x7ffe);
- __clr_IFR(0x0000);
-
- for (irq = IRQ_BASE_FPGA + 1; irq <= IRQ_BASE_FPGA + 14; irq++)
- irq_set_chip_and_handler(irq, &frv_fpga_pic, handle_level_irq);
-
- irq_set_chip_and_handler(IRQ_FPGA_NMI, &frv_fpga_pic, handle_edge_irq);
-
- /* the FPGA drives the first four external IRQ inputs on the CPU PIC */
- setup_irq(IRQ_CPU_EXTERNAL0, &fpga_irq[0]);
- setup_irq(IRQ_CPU_EXTERNAL1, &fpga_irq[1]);
- setup_irq(IRQ_CPU_EXTERNAL2, &fpga_irq[2]);
- setup_irq(IRQ_CPU_EXTERNAL3, &fpga_irq[3]);
-}
+++ /dev/null
-/* irq-mb93093.c: MB93093 FPGA interrupt handling
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/irc-regs.h>
-
-#define __reg16(ADDR) (*(volatile unsigned short *)(__region_CS2 + (ADDR)))
-
-#define __get_IMR() ({ __reg16(0x0a); })
-#define __set_IMR(M) do { __reg16(0x0a) = (M); wmb(); } while(0)
-#define __get_IFR() ({ __reg16(0x02); })
-#define __clr_IFR(M) do { __reg16(0x02) = ~(M); wmb(); } while(0)
-
-/*
- * off-CPU FPGA PIC operations
- */
-static void frv_fpga_mask(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr |= 1 << (d->irq - IRQ_BASE_FPGA);
- __set_IMR(imr);
-}
-
-static void frv_fpga_ack(struct irq_data *d)
-{
- __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA));
-}
-
-static void frv_fpga_mask_ack(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr |= 1 << (d->irq - IRQ_BASE_FPGA);
- __set_IMR(imr);
-
- __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA));
-}
-
-static void frv_fpga_unmask(struct irq_data *d)
-{
- uint16_t imr = __get_IMR();
-
- imr &= ~(1 << (d->irq - IRQ_BASE_FPGA));
-
- __set_IMR(imr);
-}
-
-static struct irq_chip frv_fpga_pic = {
- .name = "mb93093",
- .irq_ack = frv_fpga_ack,
- .irq_mask = frv_fpga_mask,
- .irq_mask_ack = frv_fpga_mask_ack,
- .irq_unmask = frv_fpga_unmask,
-};
-
-/*
- * FPGA PIC interrupt handler
- */
-static irqreturn_t fpga_interrupt(int irq, void *_mask)
-{
- uint16_t imr, mask = (unsigned long) _mask;
-
- imr = __get_IMR();
- mask = mask & ~imr & __get_IFR();
-
- /* poll all the triggered IRQs */
- while (mask) {
- int irq;
-
- asm("scan %1,gr0,%0" : "=r"(irq) : "r"(mask));
- irq = 31 - irq;
- mask &= ~(1 << irq);
-
- generic_handle_irq(IRQ_BASE_FPGA + irq);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * define an interrupt action for each FPGA PIC output
- * - use dev_id to indicate the FPGA PIC input to output mappings
- */
-static struct irqaction fpga_irq[1] = {
- [0] = {
- .handler = fpga_interrupt,
- .name = "fpga.0",
- .dev_id = (void *) 0x0700UL,
- }
-};
-
-/*
- * initialise the motherboard FPGA's PIC
- */
-void __init fpga_init(void)
-{
- int irq;
-
- /* all PIC inputs are all set to be edge triggered */
- __set_IMR(0x0700);
- __clr_IFR(0x0000);
-
- for (irq = IRQ_BASE_FPGA + 8; irq <= IRQ_BASE_FPGA + 10; irq++)
- irq_set_chip_and_handler(irq, &frv_fpga_pic, handle_edge_irq);
-
- /* the FPGA drives external IRQ input #2 on the CPU PIC */
- setup_irq(IRQ_CPU_EXTERNAL2, &fpga_irq[0]);
-}
+++ /dev/null
-/* irq-mb93493.c: MB93493 companion chip interrupt handler
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/irc-regs.h>
-#include <asm/mb93493-irqs.h>
-#include <asm/mb93493-regs.h>
-
-#define IRQ_ROUTE_ONE(X) (X##_ROUTE << (X - IRQ_BASE_MB93493))
-
-#define IRQ_ROUTING \
- (IRQ_ROUTE_ONE(IRQ_MB93493_VDC) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_VCC) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_OUT) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_I2C_0) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_I2C_1) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_USB) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_LOCAL_BUS) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_PCMCIA) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_GPIO) | \
- IRQ_ROUTE_ONE(IRQ_MB93493_AUDIO_IN))
-
-/*
- * daughter board PIC operations
- * - there is no way to ACK interrupts in the MB93493 chip
- */
-static void frv_mb93493_mask(struct irq_data *d)
-{
- uint32_t iqsr;
- volatile void *piqsr;
-
- if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493)))
- piqsr = __addr_MB93493_IQSR(1);
- else
- piqsr = __addr_MB93493_IQSR(0);
-
- iqsr = readl(piqsr);
- iqsr &= ~(1 << (d->irq - IRQ_BASE_MB93493 + 16));
- writel(iqsr, piqsr);
-}
-
-static void frv_mb93493_ack(struct irq_data *d)
-{
-}
-
-static void frv_mb93493_unmask(struct irq_data *d)
-{
- uint32_t iqsr;
- volatile void *piqsr;
-
- if (IRQ_ROUTING & (1 << (d->irq - IRQ_BASE_MB93493)))
- piqsr = __addr_MB93493_IQSR(1);
- else
- piqsr = __addr_MB93493_IQSR(0);
-
- iqsr = readl(piqsr);
- iqsr |= 1 << (d->irq - IRQ_BASE_MB93493 + 16);
- writel(iqsr, piqsr);
-}
-
-static struct irq_chip frv_mb93493_pic = {
- .name = "mb93093",
- .irq_ack = frv_mb93493_ack,
- .irq_mask = frv_mb93493_mask,
- .irq_mask_ack = frv_mb93493_mask,
- .irq_unmask = frv_mb93493_unmask,
-};
-
-/*
- * MB93493 PIC interrupt handler
- */
-static irqreturn_t mb93493_interrupt(int irq, void *_piqsr)
-{
- volatile void *piqsr = _piqsr;
- uint32_t iqsr;
-
- iqsr = readl(piqsr);
- iqsr = iqsr & (iqsr >> 16) & 0xffff;
-
- /* poll all the triggered IRQs */
- while (iqsr) {
- int irq;
-
- asm("scan %1,gr0,%0" : "=r"(irq) : "r"(iqsr));
- irq = 31 - irq;
- iqsr &= ~(1 << irq);
-
- generic_handle_irq(IRQ_BASE_MB93493 + irq);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * define an interrupt action for each MB93493 PIC output
- * - use dev_id to indicate the MB93493 PIC input to output mappings
- */
-static struct irqaction mb93493_irq[2] = {
- [0] = {
- .handler = mb93493_interrupt,
- .flags = IRQF_SHARED,
- .name = "mb93493.0",
- .dev_id = (void *) __addr_MB93493_IQSR(0),
- },
- [1] = {
- .handler = mb93493_interrupt,
- .flags = IRQF_SHARED,
- .name = "mb93493.1",
- .dev_id = (void *) __addr_MB93493_IQSR(1),
- }
-};
-
-/*
- * initialise the motherboard MB93493's PIC
- */
-void __init mb93493_init(void)
-{
- int irq;
-
- for (irq = IRQ_BASE_MB93493 + 0; irq <= IRQ_BASE_MB93493 + 10; irq++)
- irq_set_chip_and_handler(irq, &frv_mb93493_pic,
- handle_edge_irq);
-
- /* the MB93493 drives external IRQ inputs on the CPU PIC */
- setup_irq(IRQ_CPU_MB93493_0, &mb93493_irq[0]);
- setup_irq(IRQ_CPU_MB93493_1, &mb93493_irq[1]);
-}
+++ /dev/null
-/* irq.c: FRV IRQ handling
- *
- * Copyright (C) 2003, 2004, 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/ptrace.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/timex.h>
-#include <linux/random.h>
-#include <linux/init.h>
-#include <linux/kernel_stat.h>
-#include <linux/irq.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/module.h>
-#include <linux/bitops.h>
-
-#include <linux/atomic.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <linux/uaccess.h>
-#include <asm/pgalloc.h>
-#include <asm/delay.h>
-#include <asm/irq.h>
-#include <asm/irc-regs.h>
-#include <asm/gdb-stub.h>
-
-#define set_IRR(N,A,B,C,D) __set_IRR(N, (A << 28) | (B << 24) | (C << 20) | (D << 16))
-
-extern void __init fpga_init(void);
-#ifdef CONFIG_FUJITSU_MB93493
-extern void __init mb93493_init(void);
-#endif
-
-#define __reg16(ADDR) (*(volatile unsigned short *)(ADDR))
-
-atomic_t irq_err_count;
-
-int arch_show_interrupts(struct seq_file *p, int prec)
-{
- seq_printf(p, "%*s: ", prec, "ERR");
- seq_printf(p, "%10u\n", atomic_read(&irq_err_count));
- return 0;
-}
-
-/*
- * on-CPU PIC operations
- */
-static void frv_cpupic_ack(struct irq_data *d)
-{
- __clr_RC(d->irq);
- __clr_IRL();
-}
-
-static void frv_cpupic_mask(struct irq_data *d)
-{
- __set_MASK(d->irq);
-}
-
-static void frv_cpupic_mask_ack(struct irq_data *d)
-{
- __set_MASK(d->irq);
- __clr_RC(d->irq);
- __clr_IRL();
-}
-
-static void frv_cpupic_unmask(struct irq_data *d)
-{
- __clr_MASK(d->irq);
-}
-
-static struct irq_chip frv_cpu_pic = {
- .name = "cpu",
- .irq_ack = frv_cpupic_ack,
- .irq_mask = frv_cpupic_mask,
- .irq_mask_ack = frv_cpupic_mask_ack,
- .irq_unmask = frv_cpupic_unmask,
-};
-
-/*
- * handles all normal device IRQs
- * - registers are referred to by the __frame variable (GR28)
- * - IRQ distribution is complicated in this arch because of the many PICs, the
- * way they work and the way they cascade
- */
-asmlinkage void do_IRQ(void)
-{
- irq_enter();
- generic_handle_irq(__get_IRL());
- irq_exit();
-}
-
-/*
- * handles all NMIs when not co-opted by the debugger
- * - registers are referred to by the __frame variable (GR28)
- */
-asmlinkage void do_NMI(void)
-{
-}
-
-/*
- * initialise the interrupt system
- */
-void __init init_IRQ(void)
-{
- int level;
-
- for (level = 1; level <= 14; level++)
- irq_set_chip_and_handler(level, &frv_cpu_pic,
- handle_level_irq);
-
- irq_set_handler(IRQ_CPU_TIMER0, handle_edge_irq);
-
- /* set the trigger levels for internal interrupt sources
- * - timers all falling-edge
- * - ERR0 is rising-edge
- * - all others are high-level
- */
- __set_IITMR(0, 0x003f0000); /* DMA0-3, TIMER0-2 */
- __set_IITMR(1, 0x20000000); /* ERR0-1, UART0-1, DMA4-7 */
-
- /* route internal interrupts */
- set_IRR(4, IRQ_DMA3_LEVEL, IRQ_DMA2_LEVEL, IRQ_DMA1_LEVEL,
- IRQ_DMA0_LEVEL);
- set_IRR(5, 0, IRQ_TIMER2_LEVEL, IRQ_TIMER1_LEVEL, IRQ_TIMER0_LEVEL);
- set_IRR(6, IRQ_GDBSTUB_LEVEL, IRQ_GDBSTUB_LEVEL,
- IRQ_UART1_LEVEL, IRQ_UART0_LEVEL);
- set_IRR(7, IRQ_DMA7_LEVEL, IRQ_DMA6_LEVEL, IRQ_DMA5_LEVEL,
- IRQ_DMA4_LEVEL);
-
- /* route external interrupts */
- set_IRR(2, IRQ_XIRQ7_LEVEL, IRQ_XIRQ6_LEVEL, IRQ_XIRQ5_LEVEL,
- IRQ_XIRQ4_LEVEL);
- set_IRR(3, IRQ_XIRQ3_LEVEL, IRQ_XIRQ2_LEVEL, IRQ_XIRQ1_LEVEL,
- IRQ_XIRQ0_LEVEL);
-
-#if defined(CONFIG_MB93091_VDK)
- __set_TM1(0x55550000); /* XIRQ7-0 all active low */
-#elif defined(CONFIG_MB93093_PDK)
- __set_TM1(0x15550000); /* XIRQ7 active high, 6-0 all active low */
-#else
-#error dont know external IRQ trigger levels for this setup
-#endif
-
- fpga_init();
-#ifdef CONFIG_FUJITSU_MB93493
- mb93493_init();
-#endif
-}
+++ /dev/null
-/* local.h: local definitions
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _FRV_LOCAL_H
-#define _FRV_LOCAL_H
-
-#include <asm/sections.h>
-
-#ifndef __ASSEMBLY__
-
-/* dma.c */
-extern unsigned long frv_dma_inprogress;
-
-extern void frv_dma_pause_all(void);
-extern void frv_dma_resume_all(void);
-
-/* sleep.S */
-extern asmlinkage void frv_cpu_suspend(unsigned long);
-extern asmlinkage void frv_cpu_core_sleep(void);
-
-/* setup.c */
-extern unsigned long __nongprelbss pdm_suspend_mode;
-extern void determine_clocks(int verbose);
-extern int __nongprelbss clock_p0_current;
-extern int __nongprelbss clock_cm_current;
-extern int __nongprelbss clock_cmode_current;
-
-#ifdef CONFIG_PM
-extern int __nongprelbss clock_cmodes_permitted;
-extern unsigned long __nongprelbss clock_bits_settable;
-#define CLOCK_BIT_CM 0x0000000f
-#define CLOCK_BIT_CM_H 0x00000001 /* CLKC.CM can be set to 0 */
-#define CLOCK_BIT_CM_M 0x00000002 /* CLKC.CM can be set to 1 */
-#define CLOCK_BIT_CM_L 0x00000004 /* CLKC.CM can be set to 2 */
-#define CLOCK_BIT_P0 0x00000010 /* CLKC.P0 can be changed */
-#define CLOCK_BIT_CMODE 0x00000020 /* CLKC.CMODE can be changed */
-
-extern void (*__power_switch_wake_setup)(void);
-extern int (*__power_switch_wake_check)(void);
-extern void (*__power_switch_wake_cleanup)(void);
-#endif
-
-/* time.c */
-extern void time_divisor_init(void);
-
-/* cmode.S */
-extern asmlinkage void frv_change_cmode(int);
-
-
-#endif /* __ASSEMBLY__ */
-#endif /* _FRV_LOCAL_H */
+++ /dev/null
-#include <asm-generic/local64.h>
+++ /dev/null
-/* module.c: FRV specific module loading bits
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/i386/kernel/module.c, Copyright (C) 2001 Rusty Russell.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <linux/moduleloader.h>
-#include <linux/elf.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(fmt...)
-#endif
-
-/* TODO: At least one of apply_relocate or apply_relocate_add must be
- * implemented in order to get working module support.
- */
+++ /dev/null
-/*
- * FR-V MB93093 Power Management Routines
- *
- * Copyright (c) 2004 Red Hat, Inc.
- *
- * Written by: msalter@redhat.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License.
- *
- */
-
-#include <linux/init.h>
-#include <linux/pm.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/sysctl.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-
-#include <asm/mb86943a.h>
-
-#include "local.h"
-
-static unsigned long imask;
-/*
- * Setup interrupt masks, etc to enable wakeup by power switch
- */
-static void mb93093_power_switch_setup(void)
-{
- /* mask all but FPGA interrupt sources. */
- imask = *(volatile unsigned long *)0xfeff9820;
- *(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000;
-}
-
-/*
- * Cleanup interrupt masks, etc after wakeup by power switch
- */
-static void mb93093_power_switch_cleanup(void)
-{
- *(volatile unsigned long *)0xfeff9820 = imask;
-}
-
-/*
- * Return non-zero if wakeup irq was caused by power switch
- */
-static int mb93093_power_switch_check(void)
-{
- return 1;
-}
-
-/*
- * Initialize power interface
- */
-static int __init mb93093_pm_init(void)
-{
- __power_switch_wake_setup = mb93093_power_switch_setup;
- __power_switch_wake_check = mb93093_power_switch_check;
- __power_switch_wake_cleanup = mb93093_power_switch_cleanup;
- return 0;
-}
-
-__initcall(mb93093_pm_init);
-
+++ /dev/null
-/*
- * FR-V Power Management Routines
- *
- * Copyright (c) 2004 Red Hat, Inc.
- *
- * Based on SA1100 version:
- * Copyright (c) 2001 Cliff Brake <cbrake@accelent.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License.
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/pm.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/sysctl.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-
-#include <asm/mb86943a.h>
-
-#include "local.h"
-
-/*
- * Debug macros
- */
-#define DEBUG
-
-int pm_do_suspend(void)
-{
- local_irq_disable();
-
- __set_LEDS(0xb1);
-
- /* go zzz */
- frv_cpu_suspend(pdm_suspend_mode);
-
- __set_LEDS(0xb2);
-
- local_irq_enable();
-
- return 0;
-}
-
-static unsigned long __irq_mask;
-
-/*
- * Setup interrupt masks, etc to enable wakeup by power switch
- */
-static void __default_power_switch_setup(void)
-{
- /* default is to mask all interrupt sources. */
- __irq_mask = *(unsigned long *)0xfeff9820;
- *(unsigned long *)0xfeff9820 = 0xfffe0000;
-}
-
-/*
- * Cleanup interrupt masks, etc after wakeup by power switch
- */
-static void __default_power_switch_cleanup(void)
-{
- *(unsigned long *)0xfeff9820 = __irq_mask;
-}
-
-/*
- * Return non-zero if wakeup irq was caused by power switch
- */
-static int __default_power_switch_check(void)
-{
- return 1;
-}
-
-void (*__power_switch_wake_setup)(void) = __default_power_switch_setup;
-int (*__power_switch_wake_check)(void) = __default_power_switch_check;
-void (*__power_switch_wake_cleanup)(void) = __default_power_switch_cleanup;
-
-int pm_do_bus_sleep(void)
-{
- local_irq_disable();
-
- /*
- * Here is where we need some platform-dependent setup
- * of the interrupt state so that appropriate wakeup
- * sources are allowed and all others are masked.
- */
- __power_switch_wake_setup();
-
- __set_LEDS(0xa1);
-
- /* go zzz
- *
- * This is in a loop in case power switch shares an irq with other
- * devices. The wake_check() tells us if we need to finish waking
- * or go back to sleep.
- */
- do {
- frv_cpu_suspend(HSR0_PDM_BUS_SLEEP);
- } while (__power_switch_wake_check && !__power_switch_wake_check());
-
- __set_LEDS(0xa2);
-
- /*
- * Here is where we need some platform-dependent restore
- * of the interrupt state prior to being called.
- */
- __power_switch_wake_cleanup();
-
- local_irq_enable();
-
- return 0;
-}
-
-unsigned long sleep_phys_sp(void *sp)
-{
- return virt_to_phys(sp);
-}
-
-#ifdef CONFIG_SYSCTL
-/*
- * Use a temporary sysctl number. Horrid, but will be cleaned up in 2.6
- * when all the PM interfaces exist nicely.
- */
-#define CTL_PM_SUSPEND 1
-#define CTL_PM_CMODE 2
-#define CTL_PM_P0 4
-#define CTL_PM_CM 5
-
-static int user_atoi(char __user *ubuf, size_t len)
-{
- char buf[16];
- unsigned long ret;
-
- if (len > 15)
- return -EINVAL;
-
- if (copy_from_user(buf, ubuf, len))
- return -EFAULT;
-
- buf[len] = 0;
- ret = simple_strtoul(buf, NULL, 0);
- if (ret > INT_MAX)
- return -ERANGE;
- return ret;
-}
-
-/*
- * Send us to sleep.
- */
-static int sysctl_pm_do_suspend(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int mode;
-
- if (*lenp <= 0)
- return -EIO;
-
- mode = user_atoi(buffer, *lenp);
- switch (mode) {
- case 1:
- return pm_do_suspend();
-
- case 5:
- return pm_do_bus_sleep();
-
- default:
- return -EINVAL;
- }
-}
-
-static int try_set_cmode(int new_cmode)
-{
- if (new_cmode > 15)
- return -EINVAL;
- if (!(clock_cmodes_permitted & (1<<new_cmode)))
- return -EINVAL;
-
- /* now change cmode */
- local_irq_disable();
- frv_dma_pause_all();
-
- frv_change_cmode(new_cmode);
-
- determine_clocks(0);
- time_divisor_init();
-
-#ifdef DEBUG
- determine_clocks(1);
-#endif
- frv_dma_resume_all();
- local_irq_enable();
-
- return 0;
-}
-
-
-static int cmode_procctl(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int new_cmode;
-
- if (!write)
- return proc_dointvec(ctl, write, buffer, lenp, fpos);
-
- new_cmode = user_atoi(buffer, *lenp);
-
- return try_set_cmode(new_cmode)?:*lenp;
-}
-
-static int try_set_p0(int new_p0)
-{
- unsigned long flags, clkc;
-
- if (new_p0 < 0 || new_p0 > 1)
- return -EINVAL;
-
- local_irq_save(flags);
- __set_PSR(flags & ~PSR_ET);
-
- frv_dma_pause_all();
-
- clkc = __get_CLKC();
- if (new_p0)
- clkc |= CLKC_P0;
- else
- clkc &= ~CLKC_P0;
- __set_CLKC(clkc);
-
- determine_clocks(0);
- time_divisor_init();
-
-#ifdef DEBUG
- determine_clocks(1);
-#endif
- frv_dma_resume_all();
- local_irq_restore(flags);
- return 0;
-}
-
-static int try_set_cm(int new_cm)
-{
- unsigned long flags, clkc;
-
- if (new_cm < 0 || new_cm > 1)
- return -EINVAL;
-
- local_irq_save(flags);
- __set_PSR(flags & ~PSR_ET);
-
- frv_dma_pause_all();
-
- clkc = __get_CLKC();
- clkc &= ~CLKC_CM;
- clkc |= new_cm;
- __set_CLKC(clkc);
-
- determine_clocks(0);
- time_divisor_init();
-
-#if 1 //def DEBUG
- determine_clocks(1);
-#endif
-
- frv_dma_resume_all();
- local_irq_restore(flags);
- return 0;
-}
-
-static int p0_procctl(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int new_p0;
-
- if (!write)
- return proc_dointvec(ctl, write, buffer, lenp, fpos);
-
- new_p0 = user_atoi(buffer, *lenp);
-
- return try_set_p0(new_p0)?:*lenp;
-}
-
-static int cm_procctl(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *fpos)
-{
- int new_cm;
-
- if (!write)
- return proc_dointvec(ctl, write, buffer, lenp, fpos);
-
- new_cm = user_atoi(buffer, *lenp);
-
- return try_set_cm(new_cm)?:*lenp;
-}
-
-static struct ctl_table pm_table[] =
-{
- {
- .procname = "suspend",
- .data = NULL,
- .maxlen = 0,
- .mode = 0200,
- .proc_handler = sysctl_pm_do_suspend,
- },
- {
- .procname = "cmode",
- .data = &clock_cmode_current,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = cmode_procctl,
- },
- {
- .procname = "p0",
- .data = &clock_p0_current,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = p0_procctl,
- },
- {
- .procname = "cm",
- .data = &clock_cm_current,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = cm_procctl,
- },
- { }
-};
-
-static struct ctl_table pm_dir_table[] =
-{
- {
- .procname = "pm",
- .mode = 0555,
- .child = pm_table,
- },
- { }
-};
-
-/*
- * Initialize power interface
- */
-static int __init pm_init(void)
-{
- register_sysctl_table(pm_dir_table);
- return 0;
-}
-
-__initcall(pm_init);
-
-#endif
+++ /dev/null
-/* process.c: FRV specific parts of process handling
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/process.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/sched/debug.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/elf.h>
-#include <linux/reboot.h>
-#include <linux/interrupt.h>
-#include <linux/pagemap.h>
-#include <linux/rcupdate.h>
-
-#include <asm/asm-offsets.h>
-#include <linux/uaccess.h>
-#include <asm/setup.h>
-#include <asm/pgtable.h>
-#include <asm/tlb.h>
-#include <asm/gdb-stub.h>
-#include <asm/mb-regs.h>
-
-#include "local.h"
-
-asmlinkage void ret_from_fork(void);
-asmlinkage void ret_from_kernel_thread(void);
-
-#include <asm/pgalloc.h>
-
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-static void core_sleep_idle(void)
-{
-#ifdef LED_DEBUG_SLEEP
- /* Show that we're sleeping... */
- __set_LEDS(0x55aa);
-#endif
- frv_cpu_core_sleep();
-#ifdef LED_DEBUG_SLEEP
- /* ... and that we woke up */
- __set_LEDS(0);
-#endif
- mb();
-}
-
-void arch_cpu_idle(void)
-{
- if (!frv_dma_inprogress)
- core_sleep_idle();
- else
- local_irq_enable();
-}
-
-void machine_restart(char * __unused)
-{
- unsigned long reset_addr;
-#ifdef CONFIG_GDBSTUB
- gdbstub_exit(0);
-#endif
-
- if (PSR_IMPLE(__get_PSR()) == PSR_IMPLE_FR551)
- reset_addr = 0xfefff500;
- else
- reset_addr = 0xfeff0500;
-
- /* Software reset. */
- asm volatile(" dcef @(gr0,gr0),1 ! membar !"
- " sti %1,@(%0,0) !"
- " nop ! nop ! nop ! nop ! nop ! "
- " nop ! nop ! nop ! nop ! nop ! "
- " nop ! nop ! nop ! nop ! nop ! "
- " nop ! nop ! nop ! nop ! nop ! "
- : : "r" (reset_addr), "r" (1) );
-
- for (;;)
- ;
-}
-
-void machine_halt(void)
-{
-#ifdef CONFIG_GDBSTUB
- gdbstub_exit(0);
-#endif
-
- for (;;);
-}
-
-void machine_power_off(void)
-{
-#ifdef CONFIG_GDBSTUB
- gdbstub_exit(0);
-#endif
-
- for (;;);
-}
-
-void flush_thread(void)
-{
- /* nothing */
-}
-
-inline unsigned long user_stack(const struct pt_regs *regs)
-{
- while (regs->next_frame)
- regs = regs->next_frame;
- return user_mode(regs) ? regs->sp : 0;
-}
-
-/*
- * set up the kernel stack and exception frames for a new process
- */
-int copy_thread(unsigned long clone_flags,
- unsigned long usp, unsigned long arg,
- struct task_struct *p)
-{
- struct pt_regs *childregs;
-
- childregs = (struct pt_regs *)
- (task_stack_page(p) + THREAD_SIZE - FRV_FRAME0_SIZE);
-
- /* set up the userspace frame (the only place that the USP is stored) */
- *childregs = *current_pt_regs();
-
- p->thread.frame = childregs;
- p->thread.curr = p;
- p->thread.sp = (unsigned long) childregs;
- p->thread.fp = 0;
- p->thread.lr = 0;
- p->thread.frame0 = childregs;
-
- if (unlikely(p->flags & PF_KTHREAD)) {
- childregs->gr9 = usp; /* function */
- childregs->gr8 = arg;
- p->thread.pc = (unsigned long) ret_from_kernel_thread;
- save_user_regs(p->thread.user);
- return 0;
- }
- if (usp)
- childregs->sp = usp;
- childregs->next_frame = NULL;
-
- p->thread.pc = (unsigned long) ret_from_fork;
-
- /* the new TLS pointer is passed in as arg #5 to sys_clone() */
- if (clone_flags & CLONE_SETTLS)
- childregs->gr29 = childregs->gr12;
-
- save_user_regs(p->thread.user);
-
- return 0;
-} /* end copy_thread() */
-
-unsigned long get_wchan(struct task_struct *p)
-{
- struct pt_regs *regs0;
- unsigned long fp, pc;
- unsigned long stack_limit;
- int count = 0;
- if (!p || p == current || p->state == TASK_RUNNING)
- return 0;
-
- stack_limit = (unsigned long) (p + 1);
- fp = p->thread.fp;
- regs0 = p->thread.frame0;
-
- do {
- if (fp < stack_limit || fp >= (unsigned long) regs0 || fp & 3)
- return 0;
-
- pc = ((unsigned long *) fp)[2];
-
- /* FIXME: This depends on the order of these functions. */
- if (!in_sched_functions(pc))
- return pc;
-
- fp = *(unsigned long *) fp;
- } while (count++ < 16);
-
- return 0;
-}
-
-int elf_check_arch(const struct elf32_hdr *hdr)
-{
- unsigned long hsr0 = __get_HSR(0);
- unsigned long psr = __get_PSR();
-
- if (hdr->e_machine != EM_FRV)
- return 0;
-
- switch (hdr->e_flags & EF_FRV_GPR_MASK) {
- case EF_FRV_GPR64:
- if ((hsr0 & HSR0_GRN) == HSR0_GRN_32)
- return 0;
- case EF_FRV_GPR32:
- case 0:
- break;
- default:
- return 0;
- }
-
- switch (hdr->e_flags & EF_FRV_FPR_MASK) {
- case EF_FRV_FPR64:
- if ((hsr0 & HSR0_FRN) == HSR0_FRN_32)
- return 0;
- case EF_FRV_FPR32:
- case EF_FRV_FPR_NONE:
- case 0:
- break;
- default:
- return 0;
- }
-
- if ((hdr->e_flags & EF_FRV_MULADD) == EF_FRV_MULADD)
- if (PSR_IMPLE(psr) != PSR_IMPLE_FR405 &&
- PSR_IMPLE(psr) != PSR_IMPLE_FR451)
- return 0;
-
- switch (hdr->e_flags & EF_FRV_CPU_MASK) {
- case EF_FRV_CPU_GENERIC:
- break;
- case EF_FRV_CPU_FR300:
- case EF_FRV_CPU_SIMPLE:
- case EF_FRV_CPU_TOMCAT:
- default:
- return 0;
- case EF_FRV_CPU_FR400:
- if (PSR_IMPLE(psr) != PSR_IMPLE_FR401 &&
- PSR_IMPLE(psr) != PSR_IMPLE_FR405 &&
- PSR_IMPLE(psr) != PSR_IMPLE_FR451 &&
- PSR_IMPLE(psr) != PSR_IMPLE_FR551)
- return 0;
- break;
- case EF_FRV_CPU_FR450:
- if (PSR_IMPLE(psr) != PSR_IMPLE_FR451)
- return 0;
- break;
- case EF_FRV_CPU_FR500:
- if (PSR_IMPLE(psr) != PSR_IMPLE_FR501)
- return 0;
- break;
- case EF_FRV_CPU_FR550:
- if (PSR_IMPLE(psr) != PSR_IMPLE_FR551)
- return 0;
- break;
- }
-
- return 1;
-}
-
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpregs)
-{
- memcpy(fpregs,
- ¤t->thread.user->f,
- sizeof(current->thread.user->f));
- return 1;
-}
+++ /dev/null
-/* ptrace.c: FRV specific parts of process tracing
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/ptrace.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/security.h>
-#include <linux/signal.h>
-#include <linux/regset.h>
-#include <linux/elf.h>
-#include <linux/tracehook.h>
-
-#include <linux/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include <asm/unistd.h>
-
-/*
- * does not yet catch signals sent when the child dies.
- * in exit.c or in signal.c.
- */
-
-/*
- * retrieve the contents of FRV userspace general registers
- */
-static int genregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- const struct user_int_regs *iregs = &target->thread.user->i;
- int ret;
-
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- iregs, 0, sizeof(*iregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
- sizeof(*iregs), -1);
-}
-
-/*
- * update the contents of the FRV userspace general registers
- */
-static int genregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- struct user_int_regs *iregs = &target->thread.user->i;
- unsigned int offs_gr0, offs_gr1;
- int ret;
-
- /* not allowed to set PSR or __status */
- if (pos < offsetof(struct user_int_regs, psr) + sizeof(long) &&
- pos + count > offsetof(struct user_int_regs, psr))
- return -EIO;
-
- if (pos < offsetof(struct user_int_regs, __status) + sizeof(long) &&
- pos + count > offsetof(struct user_int_regs, __status))
- return -EIO;
-
- /* set the control regs */
- offs_gr0 = offsetof(struct user_int_regs, gr[0]);
- offs_gr1 = offsetof(struct user_int_regs, gr[1]);
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- iregs, 0, offs_gr0);
- if (ret < 0)
- return ret;
-
- /* skip GR0/TBR */
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- offs_gr0, offs_gr1);
- if (ret < 0)
- return ret;
-
- /* set the general regs */
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- &iregs->gr[1], offs_gr1, sizeof(*iregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- sizeof(*iregs), -1);
-}
-
-/*
- * retrieve the contents of FRV userspace FP/Media registers
- */
-static int fpmregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- const struct user_fpmedia_regs *fpregs = &target->thread.user->f;
- int ret;
-
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- fpregs, 0, sizeof(*fpregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
- sizeof(*fpregs), -1);
-}
-
-/*
- * update the contents of the FRV userspace FP/Media registers
- */
-static int fpmregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- struct user_fpmedia_regs *fpregs = &target->thread.user->f;
- int ret;
-
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- fpregs, 0, sizeof(*fpregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- sizeof(*fpregs), -1);
-}
-
-/*
- * determine if the FP/Media registers have actually been used
- */
-static int fpmregs_active(struct task_struct *target,
- const struct user_regset *regset)
-{
- return tsk_used_math(target) ? regset->n : 0;
-}
-
-/*
- * Define the register sets available on the FRV under Linux
- */
-enum frv_regset {
- REGSET_GENERAL,
- REGSET_FPMEDIA,
-};
-
-static const struct user_regset frv_regsets[] = {
- /*
- * General register format is:
- * PSR, ISR, CCR, CCCR, LR, LCR, PC, (STATUS), SYSCALLNO, ORIG_G8
- * GNER0-1, IACC0, TBR, GR1-63
- */
- [REGSET_GENERAL] = {
- .core_note_type = NT_PRSTATUS,
- .n = ELF_NGREG,
- .size = sizeof(long),
- .align = sizeof(long),
- .get = genregs_get,
- .set = genregs_set,
- },
- /*
- * FPU/Media register format is:
- * FR0-63, FNER0-1, MSR0-1, ACC0-7, ACCG0-8, FSR
- */
- [REGSET_FPMEDIA] = {
- .core_note_type = NT_PRFPREG,
- .n = sizeof(struct user_fpmedia_regs) / sizeof(long),
- .size = sizeof(long),
- .align = sizeof(long),
- .get = fpmregs_get,
- .set = fpmregs_set,
- .active = fpmregs_active,
- },
-};
-
-static const struct user_regset_view user_frv_native_view = {
- .name = "frv",
- .e_machine = EM_FRV,
- .regsets = frv_regsets,
- .n = ARRAY_SIZE(frv_regsets),
-};
-
-const struct user_regset_view *task_user_regset_view(struct task_struct *task)
-{
- return &user_frv_native_view;
-}
-
-/*
- * Get contents of register REGNO in task TASK.
- */
-static inline long get_reg(struct task_struct *task, int regno)
-{
- struct user_context *user = task->thread.user;
-
- if (regno < 0 || regno >= PT__END)
- return 0;
-
- return ((unsigned long *) user)[regno];
-}
-
-/*
- * Write contents of register REGNO in task TASK.
- */
-static inline int put_reg(struct task_struct *task, int regno,
- unsigned long data)
-{
- struct user_context *user = task->thread.user;
-
- if (regno < 0 || regno >= PT__END)
- return -EIO;
-
- switch (regno) {
- case PT_GR(0):
- return 0;
- case PT_PSR:
- case PT__STATUS:
- return -EIO;
- default:
- ((unsigned long *) user)[regno] = data;
- return 0;
- }
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Control h/w single stepping
- */
-void user_enable_single_step(struct task_struct *child)
-{
- child->thread.frame0->__status |= REG__STATUS_STEP;
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
- child->thread.frame0->__status &= ~REG__STATUS_STEP;
-}
-
-void ptrace_disable(struct task_struct *child)
-{
- user_disable_single_step(child);
-}
-
-long arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- unsigned long tmp;
- int ret;
- int regno = addr >> 2;
- unsigned long __user *datap = (unsigned long __user *) data;
-
- switch (request) {
- /* read the word at location addr in the USER area. */
- case PTRACE_PEEKUSR: {
- tmp = 0;
- ret = -EIO;
- if (addr & 3)
- break;
-
- ret = 0;
- switch (regno) {
- case 0 ... PT__END - 1:
- tmp = get_reg(child, regno);
- break;
-
- case PT__END + 0:
- tmp = child->mm->end_code - child->mm->start_code;
- break;
-
- case PT__END + 1:
- tmp = child->mm->end_data - child->mm->start_data;
- break;
-
- case PT__END + 2:
- tmp = child->mm->start_stack - child->mm->start_brk;
- break;
-
- case PT__END + 3:
- tmp = child->mm->start_code;
- break;
-
- case PT__END + 4:
- tmp = child->mm->start_stack;
- break;
-
- default:
- ret = -EIO;
- break;
- }
-
- if (ret == 0)
- ret = put_user(tmp, datap);
- break;
- }
-
- case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
- ret = -EIO;
- if (addr & 3)
- break;
-
- switch (regno) {
- case 0 ... PT__END - 1:
- ret = put_reg(child, regno, data);
- break;
- }
- break;
-
- case PTRACE_GETREGS: /* Get all integer regs from the child. */
- return copy_regset_to_user(child, &user_frv_native_view,
- REGSET_GENERAL,
- 0, sizeof(child->thread.user->i),
- datap);
-
- case PTRACE_SETREGS: /* Set all integer regs in the child. */
- return copy_regset_from_user(child, &user_frv_native_view,
- REGSET_GENERAL,
- 0, sizeof(child->thread.user->i),
- datap);
-
- case PTRACE_GETFPREGS: /* Get the child FP/Media state. */
- return copy_regset_to_user(child, &user_frv_native_view,
- REGSET_FPMEDIA,
- 0, sizeof(child->thread.user->f),
- datap);
-
- case PTRACE_SETFPREGS: /* Set the child FP/Media state. */
- return copy_regset_from_user(child, &user_frv_native_view,
- REGSET_FPMEDIA,
- 0, sizeof(child->thread.user->f),
- datap);
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
- return ret;
-}
-
-/*
- * handle tracing of system call entry
- * - return the revised system call number or ULONG_MAX to cause ENOSYS
- */
-asmlinkage unsigned long syscall_trace_entry(void)
-{
- __frame->__status |= REG__STATUS_SYSC_ENTRY;
- if (tracehook_report_syscall_entry(__frame)) {
- /* tracing decided this syscall should not happen, so
- * We'll return a bogus call number to get an ENOSYS
- * error, but leave the original number in
- * __frame->syscallno
- */
- return ULONG_MAX;
- }
-
- return __frame->syscallno;
-}
-
-/*
- * handle tracing of system call exit
- */
-asmlinkage void syscall_trace_exit(void)
-{
- __frame->__status |= REG__STATUS_SYSC_EXIT;
- tracehook_report_syscall_exit(__frame, 0);
-}
+++ /dev/null
-/* setup.c: FRV specific setup
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/setup.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <generated/utsrelease.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/fb.h>
-#include <linux/console.h>
-#include <linux/genhd.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/major.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/seq_file.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <linux/serial_reg.h>
-#include <linux/serial_8250.h>
-
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/sections.h>
-#include <asm/pgalloc.h>
-#include <asm/busctl-regs.h>
-#include <asm/serial-regs.h>
-#include <asm/timer-regs.h>
-#include <asm/irc-regs.h>
-#include <asm/spr-regs.h>
-#include <asm/mb-regs.h>
-#include <asm/mb93493-regs.h>
-#include <asm/gdb-stub.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_BLK_DEV_INITRD
-#include <asm/pgtable.h>
-#endif
-
-#include "local.h"
-
-#ifdef CONFIG_MB93090_MB00
-static void __init mb93090_display(void);
-#endif
-#ifdef CONFIG_MMU
-static void __init setup_linux_memory(void);
-#else
-static void __init setup_uclinux_memory(void);
-#endif
-
-#ifdef CONFIG_MB93090_MB00
-static char __initdata mb93090_banner[] = "FJ/RH FR-V Linux";
-static char __initdata mb93090_version[] = UTS_RELEASE;
-
-int __nongprelbss mb93090_mb00_detected;
-#endif
-
-const char __frv_unknown_system[] = "unknown";
-const char __frv_mb93091_cb10[] = "mb93091-cb10";
-const char __frv_mb93091_cb11[] = "mb93091-cb11";
-const char __frv_mb93091_cb30[] = "mb93091-cb30";
-const char __frv_mb93091_cb41[] = "mb93091-cb41";
-const char __frv_mb93091_cb60[] = "mb93091-cb60";
-const char __frv_mb93091_cb70[] = "mb93091-cb70";
-const char __frv_mb93091_cb451[] = "mb93091-cb451";
-const char __frv_mb93090_mb00[] = "mb93090-mb00";
-
-const char __frv_mb93493[] = "mb93493";
-
-const char __frv_mb93093[] = "mb93093";
-
-static const char *__nongprelbss cpu_series;
-static const char *__nongprelbss cpu_core;
-static const char *__nongprelbss cpu_silicon;
-static const char *__nongprelbss cpu_mmu;
-static const char *__nongprelbss cpu_system;
-static const char *__nongprelbss cpu_board1;
-static const char *__nongprelbss cpu_board2;
-
-static unsigned long __nongprelbss cpu_psr_all;
-static unsigned long __nongprelbss cpu_hsr0_all;
-
-unsigned long __nongprelbss pdm_suspend_mode;
-
-unsigned long __nongprelbss rom_length;
-unsigned long __nongprelbss memory_start;
-unsigned long __nongprelbss memory_end;
-
-unsigned long __nongprelbss dma_coherent_mem_start;
-unsigned long __nongprelbss dma_coherent_mem_end;
-
-unsigned long __initdata __sdram_old_base;
-unsigned long __initdata num_mappedpages;
-
-char __initdata command_line[COMMAND_LINE_SIZE];
-char __initdata redboot_command_line[COMMAND_LINE_SIZE];
-
-#ifdef CONFIG_PM
-#define __pminit
-#define __pminitdata
-#define __pminitconst
-#else
-#define __pminit __init
-#define __pminitdata __initdata
-#define __pminitconst __initconst
-#endif
-
-struct clock_cmode {
- uint8_t xbus, sdram, corebus, core, dsu;
-};
-
-#define _frac(N,D) ((N)<<4 | (D))
-#define _x0_16 _frac(1,6)
-#define _x0_25 _frac(1,4)
-#define _x0_33 _frac(1,3)
-#define _x0_375 _frac(3,8)
-#define _x0_5 _frac(1,2)
-#define _x0_66 _frac(2,3)
-#define _x0_75 _frac(3,4)
-#define _x1 _frac(1,1)
-#define _x1_5 _frac(3,2)
-#define _x2 _frac(2,1)
-#define _x3 _frac(3,1)
-#define _x4 _frac(4,1)
-#define _x4_5 _frac(9,2)
-#define _x6 _frac(6,1)
-#define _x8 _frac(8,1)
-#define _x9 _frac(9,1)
-
-int __nongprelbss clock_p0_current;
-int __nongprelbss clock_cm_current;
-int __nongprelbss clock_cmode_current;
-#ifdef CONFIG_PM
-int __nongprelbss clock_cmodes_permitted;
-unsigned long __nongprelbss clock_bits_settable;
-#endif
-
-static struct clock_cmode __pminitdata undef_clock_cmode = { _x1, _x1, _x1, _x1, _x1 };
-
-static struct clock_cmode __pminitdata clock_cmodes_fr401_fr403[16] = {
- [4] = { _x1, _x1, _x2, _x2, _x0_25 },
- [5] = { _x1, _x2, _x4, _x4, _x0_5 },
- [8] = { _x1, _x1, _x1, _x2, _x0_25 },
- [9] = { _x1, _x2, _x2, _x4, _x0_5 },
- [11] = { _x1, _x4, _x4, _x8, _x1 },
- [12] = { _x1, _x1, _x2, _x4, _x0_5 },
- [13] = { _x1, _x2, _x4, _x8, _x1 },
-};
-
-static struct clock_cmode __pminitdata clock_cmodes_fr405[16] = {
- [0] = { _x1, _x1, _x1, _x1, _x0_5 },
- [1] = { _x1, _x1, _x1, _x3, _x0_25 },
- [2] = { _x1, _x1, _x2, _x6, _x0_5 },
- [3] = { _x1, _x2, _x2, _x6, _x0_5 },
- [4] = { _x1, _x1, _x2, _x2, _x0_16 },
- [8] = { _x1, _x1, _x1, _x2, _x0_16 },
- [9] = { _x1, _x2, _x2, _x4, _x0_33 },
- [12] = { _x1, _x1, _x2, _x4, _x0_33 },
- [14] = { _x1, _x3, _x3, _x9, _x0_75 },
- [15] = { _x1, _x1_5, _x1_5, _x4_5, _x0_375 },
-
-#define CLOCK_CMODES_PERMITTED_FR405 0xd31f
-};
-
-static struct clock_cmode __pminitdata clock_cmodes_fr555[16] = {
- [0] = { _x1, _x2, _x2, _x4, _x0_33 },
- [1] = { _x1, _x3, _x3, _x6, _x0_5 },
- [2] = { _x1, _x2, _x4, _x8, _x0_66 },
- [3] = { _x1, _x1_5, _x3, _x6, _x0_5 },
- [4] = { _x1, _x3, _x3, _x9, _x0_75 },
- [5] = { _x1, _x2, _x2, _x6, _x0_5 },
- [6] = { _x1, _x1_5, _x1_5, _x4_5, _x0_375 },
-};
-
-static const struct clock_cmode __pminitconst *clock_cmodes;
-static int __pminitdata clock_doubled;
-
-static struct uart_port __pminitdata __frv_uart0 = {
- .uartclk = 0,
- .membase = (char *) UART0_BASE,
- .irq = IRQ_CPU_UART0,
- .regshift = 3,
- .iotype = UPIO_MEM,
- .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
-};
-
-static struct uart_port __pminitdata __frv_uart1 = {
- .uartclk = 0,
- .membase = (char *) UART1_BASE,
- .irq = IRQ_CPU_UART1,
- .regshift = 3,
- .iotype = UPIO_MEM,
- .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
-};
-
-#if 0
-static void __init printk_xampr(unsigned long ampr, unsigned long amlr, char i_d, int n)
-{
- unsigned long phys, virt, cxn, size;
-
-#ifdef CONFIG_MMU
- virt = amlr & 0xffffc000;
- cxn = amlr & 0x3fff;
-#else
- virt = ampr & 0xffffc000;
- cxn = 0;
-#endif
- phys = ampr & xAMPRx_PPFN;
- size = 1 << (((ampr & xAMPRx_SS) >> 4) + 17);
-
- printk("%cAMPR%d: va %08lx-%08lx [pa %08lx] %c%c%c%c [cxn:%04lx]\n",
- i_d, n,
- virt, virt + size - 1,
- phys,
- ampr & xAMPRx_S ? 'S' : '-',
- ampr & xAMPRx_C ? 'C' : '-',
- ampr & DAMPRx_WP ? 'W' : '-',
- ampr & xAMPRx_V ? 'V' : '-',
- cxn
- );
-}
-#endif
-
-/*****************************************************************************/
-/*
- * dump the memory map
- */
-static void __init dump_memory_map(void)
-{
-
-#if 0
- /* dump the protection map */
- printk_xampr(__get_IAMPR(0), __get_IAMLR(0), 'I', 0);
- printk_xampr(__get_IAMPR(1), __get_IAMLR(1), 'I', 1);
- printk_xampr(__get_IAMPR(2), __get_IAMLR(2), 'I', 2);
- printk_xampr(__get_IAMPR(3), __get_IAMLR(3), 'I', 3);
- printk_xampr(__get_IAMPR(4), __get_IAMLR(4), 'I', 4);
- printk_xampr(__get_IAMPR(5), __get_IAMLR(5), 'I', 5);
- printk_xampr(__get_IAMPR(6), __get_IAMLR(6), 'I', 6);
- printk_xampr(__get_IAMPR(7), __get_IAMLR(7), 'I', 7);
- printk_xampr(__get_IAMPR(8), __get_IAMLR(8), 'I', 8);
- printk_xampr(__get_IAMPR(9), __get_IAMLR(9), 'i', 9);
- printk_xampr(__get_IAMPR(10), __get_IAMLR(10), 'I', 10);
- printk_xampr(__get_IAMPR(11), __get_IAMLR(11), 'I', 11);
- printk_xampr(__get_IAMPR(12), __get_IAMLR(12), 'I', 12);
- printk_xampr(__get_IAMPR(13), __get_IAMLR(13), 'I', 13);
- printk_xampr(__get_IAMPR(14), __get_IAMLR(14), 'I', 14);
- printk_xampr(__get_IAMPR(15), __get_IAMLR(15), 'I', 15);
-
- printk_xampr(__get_DAMPR(0), __get_DAMLR(0), 'D', 0);
- printk_xampr(__get_DAMPR(1), __get_DAMLR(1), 'D', 1);
- printk_xampr(__get_DAMPR(2), __get_DAMLR(2), 'D', 2);
- printk_xampr(__get_DAMPR(3), __get_DAMLR(3), 'D', 3);
- printk_xampr(__get_DAMPR(4), __get_DAMLR(4), 'D', 4);
- printk_xampr(__get_DAMPR(5), __get_DAMLR(5), 'D', 5);
- printk_xampr(__get_DAMPR(6), __get_DAMLR(6), 'D', 6);
- printk_xampr(__get_DAMPR(7), __get_DAMLR(7), 'D', 7);
- printk_xampr(__get_DAMPR(8), __get_DAMLR(8), 'D', 8);
- printk_xampr(__get_DAMPR(9), __get_DAMLR(9), 'D', 9);
- printk_xampr(__get_DAMPR(10), __get_DAMLR(10), 'D', 10);
- printk_xampr(__get_DAMPR(11), __get_DAMLR(11), 'D', 11);
- printk_xampr(__get_DAMPR(12), __get_DAMLR(12), 'D', 12);
- printk_xampr(__get_DAMPR(13), __get_DAMLR(13), 'D', 13);
- printk_xampr(__get_DAMPR(14), __get_DAMLR(14), 'D', 14);
- printk_xampr(__get_DAMPR(15), __get_DAMLR(15), 'D', 15);
-#endif
-
-#if 0
- /* dump the bus controller registers */
- printk("LGCR: %08lx\n", __get_LGCR());
- printk("Master: %08lx-%08lx CR=%08lx\n",
- __get_LEMBR(), __get_LEMBR() + __get_LEMAM(),
- __get_LMAICR());
-
- int loop;
- for (loop = 1; loop <= 7; loop++) {
- unsigned long lcr = __get_LCR(loop), lsbr = __get_LSBR(loop);
- printk("CS#%d: %08lx-%08lx %c%c%c%c%c%c%c%c%c\n",
- loop,
- lsbr, lsbr + __get_LSAM(loop),
- lcr & 0x80000000 ? 'r' : '-',
- lcr & 0x40000000 ? 'w' : '-',
- lcr & 0x08000000 ? 'b' : '-',
- lcr & 0x04000000 ? 'B' : '-',
- lcr & 0x02000000 ? 'C' : '-',
- lcr & 0x01000000 ? 'D' : '-',
- lcr & 0x00800000 ? 'W' : '-',
- lcr & 0x00400000 ? 'R' : '-',
- (lcr & 0x00030000) == 0x00000000 ? '4' :
- (lcr & 0x00030000) == 0x00010000 ? '2' :
- (lcr & 0x00030000) == 0x00020000 ? '1' :
- '-'
- );
- }
-#endif
-
-#if 0
- printk("\n");
-#endif
-} /* end dump_memory_map() */
-
-/*****************************************************************************/
-/*
- * attempt to detect a VDK motherboard and DAV daughter board on an MB93091 system
- */
-#ifdef CONFIG_MB93091_VDK
-static void __init detect_mb93091(void)
-{
-#ifdef CONFIG_MB93090_MB00
- /* Detect CB70 without motherboard */
- if (!(cpu_system == __frv_mb93091_cb70 && ((*(unsigned short *)0xffc00030) & 0x100))) {
- cpu_board1 = __frv_mb93090_mb00;
- mb93090_mb00_detected = 1;
- }
-#endif
-
-#ifdef CONFIG_FUJITSU_MB93493
- cpu_board2 = __frv_mb93493;
-#endif
-
-} /* end detect_mb93091() */
-#endif
-
-/*****************************************************************************/
-/*
- * determine the CPU type and set appropriate parameters
- *
- * Family Series CPU Core Silicon Imple Vers
- * ----------------------------------------------------------
- * FR-V --+-> FR400 --+-> FR401 --+-> MB93401 02 00 [1]
- * | | |
- * | | +-> MB93401/A 02 01
- * | | |
- * | | +-> MB93403 02 02
- * | |
- * | +-> FR405 ----> MB93405 04 00
- * |
- * +-> FR450 ----> FR451 ----> MB93451 05 00
- * |
- * +-> FR500 ----> FR501 --+-> MB93501 01 01 [2]
- * | |
- * | +-> MB93501/A 01 02
- * |
- * +-> FR550 --+-> FR551 ----> MB93555 03 01
- *
- * [1] The MB93401 is an obsolete CPU replaced by the MB93401A
- * [2] The MB93501 is an obsolete CPU replaced by the MB93501A
- *
- * Imple is PSR(Processor Status Register)[31:28].
- * Vers is PSR(Processor Status Register)[27:24].
- *
- * A "Silicon" consists of CPU core and some on-chip peripherals.
- */
-static void __init determine_cpu(void)
-{
- unsigned long hsr0 = __get_HSR(0);
- unsigned long psr = __get_PSR();
-
- /* work out what selectable services the CPU supports */
- __set_PSR(psr | PSR_EM | PSR_EF | PSR_CM | PSR_NEM);
- cpu_psr_all = __get_PSR();
- __set_PSR(psr);
-
- __set_HSR(0, hsr0 | HSR0_GRLE | HSR0_GRHE | HSR0_FRLE | HSR0_FRHE);
- cpu_hsr0_all = __get_HSR(0);
- __set_HSR(0, hsr0);
-
- /* derive other service specs from the CPU type */
- cpu_series = "unknown";
- cpu_core = "unknown";
- cpu_silicon = "unknown";
- cpu_mmu = "Prot";
- cpu_system = __frv_unknown_system;
- clock_cmodes = NULL;
- clock_doubled = 0;
-#ifdef CONFIG_PM
- clock_bits_settable = CLOCK_BIT_CM_H | CLOCK_BIT_CM_M | CLOCK_BIT_P0;
-#endif
-
- switch (PSR_IMPLE(psr)) {
- case PSR_IMPLE_FR401:
- cpu_series = "fr400";
- cpu_core = "fr401";
- pdm_suspend_mode = HSR0_PDM_PLL_RUN;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR401_MB93401:
- cpu_silicon = "mb93401";
- cpu_system = __frv_mb93091_cb10;
- clock_cmodes = clock_cmodes_fr401_fr403;
- clock_doubled = 1;
- break;
- case PSR_VERSION_FR401_MB93401A:
- cpu_silicon = "mb93401/A";
- cpu_system = __frv_mb93091_cb11;
- clock_cmodes = clock_cmodes_fr401_fr403;
- break;
- case PSR_VERSION_FR401_MB93403:
- cpu_silicon = "mb93403";
-#ifndef CONFIG_MB93093_PDK
- cpu_system = __frv_mb93091_cb30;
-#else
- cpu_system = __frv_mb93093;
-#endif
- clock_cmodes = clock_cmodes_fr401_fr403;
- break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR405:
- cpu_series = "fr400";
- cpu_core = "fr405";
- pdm_suspend_mode = HSR0_PDM_PLL_STOP;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR405_MB93405:
- cpu_silicon = "mb93405";
- cpu_system = __frv_mb93091_cb60;
- clock_cmodes = clock_cmodes_fr405;
-#ifdef CONFIG_PM
- clock_bits_settable |= CLOCK_BIT_CMODE;
- clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405;
-#endif
-
- /* the FPGA on the CB70 has extra registers
- * - it has 0x0046 in the VDK_ID FPGA register at 0x1a0, which is
- * how we tell the difference between it and a CB60
- */
- if (*(volatile unsigned short *) 0xffc001a0 == 0x0046)
- cpu_system = __frv_mb93091_cb70;
- break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR451:
- cpu_series = "fr450";
- cpu_core = "fr451";
- pdm_suspend_mode = HSR0_PDM_PLL_STOP;
-#ifdef CONFIG_PM
- clock_bits_settable |= CLOCK_BIT_CMODE;
- clock_cmodes_permitted = CLOCK_CMODES_PERMITTED_FR405;
-#endif
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR451_MB93451:
- cpu_silicon = "mb93451";
- cpu_mmu = "Prot, SAT, xSAT, DAT";
- cpu_system = __frv_mb93091_cb451;
- clock_cmodes = clock_cmodes_fr405;
- break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR501:
- cpu_series = "fr500";
- cpu_core = "fr501";
- pdm_suspend_mode = HSR0_PDM_PLL_STOP;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR501_MB93501: cpu_silicon = "mb93501"; break;
- case PSR_VERSION_FR501_MB93501A: cpu_silicon = "mb93501/A"; break;
- default:
- break;
- }
- break;
-
- case PSR_IMPLE_FR551:
- cpu_series = "fr550";
- cpu_core = "fr551";
- pdm_suspend_mode = HSR0_PDM_PLL_RUN;
-
- switch (PSR_VERSION(psr)) {
- case PSR_VERSION_FR551_MB93555:
- cpu_silicon = "mb93555";
- cpu_mmu = "Prot, SAT";
- cpu_system = __frv_mb93091_cb41;
- clock_cmodes = clock_cmodes_fr555;
- clock_doubled = 1;
- break;
- default:
- break;
- }
- break;
-
- default:
- break;
- }
-
- printk("- Series:%s CPU:%s Silicon:%s\n",
- cpu_series, cpu_core, cpu_silicon);
-
-#ifdef CONFIG_MB93091_VDK
- detect_mb93091();
-#endif
-
-#if defined(CONFIG_MB93093_PDK) && defined(CONFIG_FUJITSU_MB93493)
- cpu_board2 = __frv_mb93493;
-#endif
-
-} /* end determine_cpu() */
-
-/*****************************************************************************/
-/*
- * calculate the bus clock speed
- */
-void __pminit determine_clocks(int verbose)
-{
- const struct clock_cmode *mode, *tmode;
- unsigned long clkc, psr, quot;
-
- clkc = __get_CLKC();
- psr = __get_PSR();
-
- clock_p0_current = !!(clkc & CLKC_P0);
- clock_cm_current = clkc & CLKC_CM;
- clock_cmode_current = (clkc & CLKC_CMODE) >> CLKC_CMODE_s;
-
- if (verbose)
- printk("psr=%08lx hsr0=%08lx clkc=%08lx\n", psr, __get_HSR(0), clkc);
-
- /* the CB70 has some alternative ways of setting the clock speed through switches accessed
- * through the FPGA. */
- if (cpu_system == __frv_mb93091_cb70) {
- unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL;
-
- if (clkswr & 0x1000)
- __clkin_clock_speed_HZ = 60000000UL;
- else
- __clkin_clock_speed_HZ =
- ((clkswr >> 8) & 0xf) * 10000000 +
- ((clkswr >> 4) & 0xf) * 1000000 +
- ((clkswr ) & 0xf) * 100000;
- }
- /* the FR451 is currently fixed at 24MHz */
- else if (cpu_system == __frv_mb93091_cb451) {
- //__clkin_clock_speed_HZ = 24000000UL; // CB451-FPGA
- unsigned short clkswr = *(volatile unsigned short *) 0xffc00104UL & 0x1fffUL;
-
- if (clkswr & 0x1000)
- __clkin_clock_speed_HZ = 60000000UL;
- else
- __clkin_clock_speed_HZ =
- ((clkswr >> 8) & 0xf) * 10000000 +
- ((clkswr >> 4) & 0xf) * 1000000 +
- ((clkswr ) & 0xf) * 100000;
- }
- /* otherwise determine the clockspeed from VDK or other registers */
- else {
- __clkin_clock_speed_HZ = __get_CLKIN();
- }
-
- /* look up the appropriate clock relationships table entry */
- mode = &undef_clock_cmode;
- if (clock_cmodes) {
- tmode = &clock_cmodes[(clkc & CLKC_CMODE) >> CLKC_CMODE_s];
- if (tmode->xbus)
- mode = tmode;
- }
-
-#define CLOCK(SRC,RATIO) ((SRC) * (((RATIO) >> 4) & 0x0f) / ((RATIO) & 0x0f))
-
- if (clock_doubled)
- __clkin_clock_speed_HZ <<= 1;
-
- __ext_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->xbus);
- __sdram_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram);
- __dsu_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->dsu);
-
- switch (clkc & CLKC_CM) {
- case 0: /* High */
- __core_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->corebus);
- __core_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->core);
- break;
- case 1: /* Medium */
- __core_bus_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram);
- __core_clock_speed_HZ = CLOCK(__clkin_clock_speed_HZ, mode->sdram);
- break;
- case 2: /* Low; not supported */
- case 3: /* UNDEF */
- printk("Unsupported CLKC CM %ld\n", clkc & CLKC_CM);
- panic("Bye");
- }
-
- __res_bus_clock_speed_HZ = __ext_bus_clock_speed_HZ;
- if (clkc & CLKC_P0)
- __res_bus_clock_speed_HZ >>= 1;
-
- if (verbose) {
- printk("CLKIN: %lu.%3.3luMHz\n",
- __clkin_clock_speed_HZ / 1000000,
- (__clkin_clock_speed_HZ / 1000) % 1000);
-
- printk("CLKS:"
- " ext=%luMHz res=%luMHz sdram=%luMHz cbus=%luMHz core=%luMHz dsu=%luMHz\n",
- __ext_bus_clock_speed_HZ / 1000000,
- __res_bus_clock_speed_HZ / 1000000,
- __sdram_clock_speed_HZ / 1000000,
- __core_bus_clock_speed_HZ / 1000000,
- __core_clock_speed_HZ / 1000000,
- __dsu_clock_speed_HZ / 1000000
- );
- }
-
- /* calculate the number of __delay() loop iterations per sec (2 insn loop) */
- __delay_loops_MHz = __core_clock_speed_HZ / (1000000 * 2);
-
- /* set the serial prescaler */
- __serial_clock_speed_HZ = __res_bus_clock_speed_HZ;
- quot = 1;
- while (__serial_clock_speed_HZ / quot / 16 / 65536 > 3000)
- quot += 1;
-
- /* double the divisor if P0 is clear, so that if/when P0 is set, it's still achievable
- * - we have to be careful - dividing too much can mean we can't get 115200 baud
- */
- if (__serial_clock_speed_HZ > 32000000 && !(clkc & CLKC_P0))
- quot <<= 1;
-
- __serial_clock_speed_HZ /= quot;
- __frv_uart0.uartclk = __serial_clock_speed_HZ;
- __frv_uart1.uartclk = __serial_clock_speed_HZ;
-
- if (verbose)
- printk(" uart=%luMHz\n", __serial_clock_speed_HZ / 1000000 * quot);
-
- while (!(__get_UART0_LSR() & UART_LSR_TEMT))
- continue;
-
- while (!(__get_UART1_LSR() & UART_LSR_TEMT))
- continue;
-
- __set_UCPVR(quot);
- __set_UCPSR(0);
-} /* end determine_clocks() */
-
-/*****************************************************************************/
-/*
- * reserve some DMA consistent memory
- */
-#ifdef CONFIG_RESERVE_DMA_COHERENT
-static void __init reserve_dma_coherent(void)
-{
- unsigned long ampr;
-
- /* find the first non-kernel memory tile and steal it */
-#define __steal_AMPR(r) \
- if (__get_DAMPR(r) & xAMPRx_V) { \
- ampr = __get_DAMPR(r); \
- __set_DAMPR(r, ampr | xAMPRx_S | xAMPRx_C); \
- __set_IAMPR(r, 0); \
- goto found; \
- }
-
- __steal_AMPR(1);
- __steal_AMPR(2);
- __steal_AMPR(3);
- __steal_AMPR(4);
- __steal_AMPR(5);
- __steal_AMPR(6);
-
- if (PSR_IMPLE(__get_PSR()) == PSR_IMPLE_FR551) {
- __steal_AMPR(7);
- __steal_AMPR(8);
- __steal_AMPR(9);
- __steal_AMPR(10);
- __steal_AMPR(11);
- __steal_AMPR(12);
- __steal_AMPR(13);
- __steal_AMPR(14);
- }
-
- /* unable to grant any DMA consistent memory */
- printk("No DMA consistent memory reserved\n");
- return;
-
- found:
- dma_coherent_mem_start = ampr & xAMPRx_PPFN;
- ampr &= xAMPRx_SS;
- ampr >>= 4;
- ampr = 1 << (ampr - 3 + 20);
- dma_coherent_mem_end = dma_coherent_mem_start + ampr;
-
- printk("DMA consistent memory reserved %lx-%lx\n",
- dma_coherent_mem_start, dma_coherent_mem_end);
-
-} /* end reserve_dma_coherent() */
-#endif
-
-/*****************************************************************************/
-/*
- * calibrate the delay loop
- */
-void calibrate_delay(void)
-{
- loops_per_jiffy = __delay_loops_MHz * (1000000 / HZ);
-
- printk("Calibrating delay loop... %lu.%02lu BogoMIPS\n",
- loops_per_jiffy / (500000 / HZ),
- (loops_per_jiffy / (5000 / HZ)) % 100);
-
-} /* end calibrate_delay() */
-
-/*****************************************************************************/
-/*
- * look through the command line for some things we need to know immediately
- */
-static void __init parse_cmdline_early(char *cmdline)
-{
- if (!cmdline)
- return;
-
- while (*cmdline) {
- if (*cmdline == ' ')
- cmdline++;
-
- /* "mem=XXX[kKmM]" sets SDRAM size to <mem>, overriding the value we worked
- * out from the SDRAM controller mask register
- */
- if (!strncmp(cmdline, "mem=", 4)) {
- unsigned long long mem_size;
-
- mem_size = memparse(cmdline + 4, &cmdline);
- memory_end = memory_start + mem_size;
- }
-
- while (*cmdline && *cmdline != ' ')
- cmdline++;
- }
-
-} /* end parse_cmdline_early() */
-
-/*****************************************************************************/
-/*
- *
- */
-void __init setup_arch(char **cmdline_p)
-{
-#ifdef CONFIG_MMU
- printk("Linux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n");
-#else
- printk("uClinux FR-V port done by Red Hat Inc <dhowells@redhat.com>\n");
-#endif
-
- memcpy(boot_command_line, redboot_command_line, COMMAND_LINE_SIZE);
-
- determine_cpu();
- determine_clocks(1);
-
- /* For printk-directly-beats-on-serial-hardware hack */
- console_set_baud(115200);
-#ifdef CONFIG_GDBSTUB
- gdbstub_set_baud(115200);
-#endif
-
-#ifdef CONFIG_RESERVE_DMA_COHERENT
- reserve_dma_coherent();
-#endif
- dump_memory_map();
-
-#ifdef CONFIG_MB93090_MB00
- if (mb93090_mb00_detected)
- mb93090_display();
-#endif
-
- /* register those serial ports that are available */
-#ifdef CONFIG_FRV_ONCPU_SERIAL
-#ifndef CONFIG_GDBSTUB_UART0
- __reg(UART0_BASE + UART_IER * 8) = 0;
- early_serial_setup(&__frv_uart0);
-#endif
-#ifndef CONFIG_GDBSTUB_UART1
- __reg(UART1_BASE + UART_IER * 8) = 0;
- early_serial_setup(&__frv_uart1);
-#endif
-#endif
-
- /* deal with the command line - RedBoot may have passed one to the kernel */
- memcpy(command_line, boot_command_line, sizeof(command_line));
- *cmdline_p = &command_line[0];
- parse_cmdline_early(command_line);
-
- /* set up the memory description
- * - by now the stack is part of the init task */
- printk("Memory %08lx-%08lx\n", memory_start, memory_end);
-
- BUG_ON(memory_start == memory_end);
-
- init_mm.start_code = (unsigned long) _stext;
- init_mm.end_code = (unsigned long) _etext;
- init_mm.end_data = (unsigned long) _edata;
-#if 0 /* DAVIDM - don't set brk just incase someone decides to use it */
- init_mm.brk = (unsigned long) &_end;
-#else
- init_mm.brk = (unsigned long) 0;
-#endif
-
-#ifdef DEBUG
- printk("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
- _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
-#endif
-
-#ifdef CONFIG_VT
-#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
-#endif
-
-#ifdef CONFIG_MMU
- setup_linux_memory();
-#else
- setup_uclinux_memory();
-#endif
-
- /* get kmalloc into gear */
- paging_init();
-
- /* init DMA */
- frv_dma_init();
-#ifdef DEBUG
- printk("Done setup_arch\n");
-#endif
-
- /* start the decrement timer running */
-// asm volatile("movgs %0,timerd" :: "r"(10000000));
-// __set_HSR(0, __get_HSR(0) | HSR0_ETMD);
-
-} /* end setup_arch() */
-
-#if 0
-/*****************************************************************************/
-/*
- *
- */
-static int setup_arch_serial(void)
-{
- /* register those serial ports that are available */
-#ifndef CONFIG_GDBSTUB_UART0
- early_serial_setup(&__frv_uart0);
-#endif
-#ifndef CONFIG_GDBSTUB_UART1
- early_serial_setup(&__frv_uart1);
-#endif
-
- return 0;
-} /* end setup_arch_serial() */
-
-late_initcall(setup_arch_serial);
-#endif
-
-/*****************************************************************************/
-/*
- * set up the memory map for normal MMU linux
- */
-#ifdef CONFIG_MMU
-static void __init setup_linux_memory(void)
-{
- unsigned long bootmap_size, low_top_pfn, kstart, kend, high_mem;
- unsigned long physpages;
-
- kstart = (unsigned long) &__kernel_image_start - PAGE_OFFSET;
- kend = (unsigned long) &__kernel_image_end - PAGE_OFFSET;
-
- kstart = kstart & PAGE_MASK;
- kend = (kend + PAGE_SIZE - 1) & PAGE_MASK;
-
- /* give all the memory to the bootmap allocator, tell it to put the
- * boot mem_map immediately following the kernel image
- */
- bootmap_size = init_bootmem_node(NODE_DATA(0),
- kend >> PAGE_SHIFT, /* map addr */
- memory_start >> PAGE_SHIFT, /* start of RAM */
- memory_end >> PAGE_SHIFT /* end of RAM */
- );
-
- /* pass the memory that the kernel can immediately use over to the bootmem allocator */
- max_mapnr = physpages = (memory_end - memory_start) >> PAGE_SHIFT;
- low_top_pfn = (KERNEL_LOWMEM_END - KERNEL_LOWMEM_START) >> PAGE_SHIFT;
- high_mem = 0;
-
- if (physpages > low_top_pfn) {
-#ifdef CONFIG_HIGHMEM
- high_mem = physpages - low_top_pfn;
-#else
- max_mapnr = physpages = low_top_pfn;
-#endif
- }
- else {
- low_top_pfn = physpages;
- }
-
- min_low_pfn = memory_start >> PAGE_SHIFT;
- max_low_pfn = low_top_pfn;
- max_pfn = memory_end >> PAGE_SHIFT;
-
- num_mappedpages = low_top_pfn;
-
- printk(KERN_NOTICE "%ldMB LOWMEM available.\n", low_top_pfn >> (20 - PAGE_SHIFT));
-
- free_bootmem(memory_start, low_top_pfn << PAGE_SHIFT);
-
-#ifdef CONFIG_HIGHMEM
- if (high_mem)
- printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", high_mem >> (20 - PAGE_SHIFT));
-#endif
-
- /* take back the memory occupied by the kernel image and the bootmem alloc map */
- reserve_bootmem(kstart, kend - kstart + bootmap_size,
- BOOTMEM_DEFAULT);
-
- /* reserve the memory occupied by the initial ramdisk */
-#ifdef CONFIG_BLK_DEV_INITRD
- if (LOADER_TYPE && INITRD_START) {
- if (INITRD_START + INITRD_SIZE <= (low_top_pfn << PAGE_SHIFT)) {
- reserve_bootmem(INITRD_START, INITRD_SIZE,
- BOOTMEM_DEFAULT);
- initrd_start = INITRD_START + PAGE_OFFSET;
- initrd_end = initrd_start + INITRD_SIZE;
- }
- else {
- printk(KERN_ERR
- "initrd extends beyond end of memory (0x%08lx > 0x%08lx)\n"
- "disabling initrd\n",
- INITRD_START + INITRD_SIZE,
- low_top_pfn << PAGE_SHIFT);
- initrd_start = 0;
- }
- }
-#endif
-
-} /* end setup_linux_memory() */
-#endif
-
-/*****************************************************************************/
-/*
- * set up the memory map for uClinux
- */
-#ifndef CONFIG_MMU
-static void __init setup_uclinux_memory(void)
-{
-#ifdef CONFIG_PROTECT_KERNEL
- unsigned long dampr;
-#endif
- unsigned long kend;
- int bootmap_size;
-
- kend = (unsigned long) &__kernel_image_end;
- kend = (kend + PAGE_SIZE - 1) & PAGE_MASK;
-
- /* give all the memory to the bootmap allocator, tell it to put the
- * boot mem_map immediately following the kernel image
- */
- bootmap_size = init_bootmem_node(NODE_DATA(0),
- kend >> PAGE_SHIFT, /* map addr */
- memory_start >> PAGE_SHIFT, /* start of RAM */
- memory_end >> PAGE_SHIFT /* end of RAM */
- );
-
- /* free all the usable memory */
- free_bootmem(memory_start, memory_end - memory_start);
-
- high_memory = (void *) (memory_end & PAGE_MASK);
- max_mapnr = ((unsigned long) high_memory - PAGE_OFFSET) >> PAGE_SHIFT;
-
- min_low_pfn = memory_start >> PAGE_SHIFT;
- max_low_pfn = memory_end >> PAGE_SHIFT;
- max_pfn = max_low_pfn;
-
- /* now take back the bits the core kernel is occupying */
-#ifndef CONFIG_PROTECT_KERNEL
- reserve_bootmem(kend, bootmap_size, BOOTMEM_DEFAULT);
- reserve_bootmem((unsigned long) &__kernel_image_start,
- kend - (unsigned long) &__kernel_image_start,
- BOOTMEM_DEFAULT);
-
-#else
- dampr = __get_DAMPR(0);
- dampr &= xAMPRx_SS;
- dampr = (dampr >> 4) + 17;
- dampr = 1 << dampr;
-
- reserve_bootmem(__get_DAMPR(0) & xAMPRx_PPFN, dampr, BOOTMEM_DEFAULT);
-#endif
-
- /* reserve some memory to do uncached DMA through if requested */
-#ifdef CONFIG_RESERVE_DMA_COHERENT
- if (dma_coherent_mem_start)
- reserve_bootmem(dma_coherent_mem_start,
- dma_coherent_mem_end - dma_coherent_mem_start,
- BOOTMEM_DEFAULT);
-#endif
-
-} /* end setup_uclinux_memory() */
-#endif
-
-/*****************************************************************************/
-/*
- * get CPU information for use by procfs
- */
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
- const char *gr, *fr, *fm, *fp, *cm, *nem, *ble;
-#ifdef CONFIG_PM
- const char *sep;
-#endif
-
- gr = cpu_hsr0_all & HSR0_GRHE ? "gr0-63" : "gr0-31";
- fr = cpu_hsr0_all & HSR0_FRHE ? "fr0-63" : "fr0-31";
- fm = cpu_psr_all & PSR_EM ? ", Media" : "";
- fp = cpu_psr_all & PSR_EF ? ", FPU" : "";
- cm = cpu_psr_all & PSR_CM ? ", CCCR" : "";
- nem = cpu_psr_all & PSR_NEM ? ", NE" : "";
- ble = cpu_psr_all & PSR_BE ? "BE" : "LE";
-
- seq_printf(m,
- "CPU-Series:\t%s\n"
- "CPU-Core:\t%s, %s, %s%s%s\n"
- "CPU:\t\t%s\n"
- "MMU:\t\t%s\n"
- "FP-Media:\t%s%s%s\n"
- "System:\t\t%s",
- cpu_series,
- cpu_core, gr, ble, cm, nem,
- cpu_silicon,
- cpu_mmu,
- fr, fm, fp,
- cpu_system);
-
- if (cpu_board1)
- seq_printf(m, ", %s", cpu_board1);
-
- if (cpu_board2)
- seq_printf(m, ", %s", cpu_board2);
-
- seq_printf(m, "\n");
-
-#ifdef CONFIG_PM
- seq_printf(m, "PM-Controls:");
- sep = "\t";
-
- if (clock_bits_settable & CLOCK_BIT_CMODE) {
- seq_printf(m, "%scmode=0x%04hx", sep, clock_cmodes_permitted);
- sep = ", ";
- }
-
- if (clock_bits_settable & CLOCK_BIT_CM) {
- seq_printf(m, "%scm=0x%lx", sep, clock_bits_settable & CLOCK_BIT_CM);
- sep = ", ";
- }
-
- if (clock_bits_settable & CLOCK_BIT_P0) {
- seq_printf(m, "%sp0=0x3", sep);
- sep = ", ";
- }
-
- seq_printf(m, "%ssuspend=0x22\n", sep);
-#endif
-
- seq_printf(m,
- "PM-Status:\tcmode=%d, cm=%d, p0=%d\n",
- clock_cmode_current, clock_cm_current, clock_p0_current);
-
-#define print_clk(TAG, VAR) \
- seq_printf(m, "Clock-" TAG ":\t%lu.%2.2lu MHz\n", VAR / 1000000, (VAR / 10000) % 100)
-
- print_clk("In", __clkin_clock_speed_HZ);
- print_clk("Core", __core_clock_speed_HZ);
- print_clk("SDRAM", __sdram_clock_speed_HZ);
- print_clk("CBus", __core_bus_clock_speed_HZ);
- print_clk("Res", __res_bus_clock_speed_HZ);
- print_clk("Ext", __ext_bus_clock_speed_HZ);
- print_clk("DSU", __dsu_clock_speed_HZ);
-
- seq_printf(m,
- "BogoMips:\t%lu.%02lu\n",
- (loops_per_jiffy * HZ) / 500000, ((loops_per_jiffy * HZ) / 5000) % 100);
-
- return 0;
-} /* end show_cpuinfo() */
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < NR_CPUS ? (void *) 0x12345678 : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return c_start(m, pos);
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
-
-void arch_gettod(int *year, int *mon, int *day, int *hour,
- int *min, int *sec)
-{
- *year = *mon = *day = *hour = *min = *sec = 0;
-}
-
-/*****************************************************************************/
-/*
- *
- */
-#ifdef CONFIG_MB93090_MB00
-static void __init mb93090_sendlcdcmd(uint32_t cmd)
-{
- unsigned long base = __addr_LCD();
- int loop;
-
- /* request reading of the busy flag */
- __set_LCD(base, LCD_CMD_READ_BUSY);
- __set_LCD(base, LCD_CMD_READ_BUSY & ~LCD_E);
-
- /* wait for the busy flag to become clear */
- for (loop = 10000; loop > 0; loop--)
- if (!(__get_LCD(base) & 0x80))
- break;
-
- /* send the command */
- __set_LCD(base, cmd);
- __set_LCD(base, cmd & ~LCD_E);
-
-} /* end mb93090_sendlcdcmd() */
-
-/*****************************************************************************/
-/*
- * write to the MB93090 LEDs and LCD
- */
-static void __init mb93090_display(void)
-{
- const char *p;
-
- __set_LEDS(0);
-
- /* set up the LCD */
- mb93090_sendlcdcmd(LCD_CMD_CLEAR);
- mb93090_sendlcdcmd(LCD_CMD_FUNCSET(1,1,0));
- mb93090_sendlcdcmd(LCD_CMD_ON(0,0));
- mb93090_sendlcdcmd(LCD_CMD_HOME);
-
- mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(0));
- for (p = mb93090_banner; *p; p++)
- mb93090_sendlcdcmd(LCD_DATA_WRITE(*p));
-
- mb93090_sendlcdcmd(LCD_CMD_SET_DD_ADDR(64));
- for (p = mb93090_version; *p; p++)
- mb93090_sendlcdcmd(LCD_DATA_WRITE(*p));
-
-} /* end mb93090_display() */
-
-#endif // CONFIG_MB93090_MB00
+++ /dev/null
-/* signal.c: FRV specific bits of signal handling
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/signal.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/wait.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/personality.h>
-#include <linux/tracehook.h>
-#include <asm/ucontext.h>
-#include <linux/uaccess.h>
-#include <asm/cacheflush.h>
-
-#define DEBUG_SIG 0
-
-struct fdpic_func_descriptor {
- unsigned long text;
- unsigned long GOT;
-};
-
-/*
- * Do a signal return; undo the signal stack.
- */
-
-struct sigframe
-{
- __sigrestore_t pretcode;
- int sig;
- struct sigcontext sc;
- unsigned long extramask[_NSIG_WORDS-1];
- uint32_t retcode[2];
-};
-
-struct rt_sigframe
-{
- __sigrestore_t pretcode;
- int sig;
- struct siginfo __user *pinfo;
- void __user *puc;
- struct siginfo info;
- struct ucontext uc;
- uint32_t retcode[2];
-};
-
-static int restore_sigcontext(struct sigcontext __user *sc, int *_gr8)
-{
- struct user_context *user = current->thread.user;
- unsigned long tbr, psr;
-
- /* Always make any pending restarted system calls return -EINTR */
- current->restart_block.fn = do_no_restart_syscall;
-
- tbr = user->i.tbr;
- psr = user->i.psr;
- if (copy_from_user(user, &sc->sc_context, sizeof(sc->sc_context)))
- goto badframe;
- user->i.tbr = tbr;
- user->i.psr = psr;
-
- restore_user_regs(user);
-
- user->i.syscallno = -1; /* disable syscall checks */
-
- *_gr8 = user->i.gr[8];
- return 0;
-
- badframe:
- return 1;
-}
-
-asmlinkage int sys_sigreturn(void)
-{
- struct sigframe __user *frame = (struct sigframe __user *) __frame->sp;
- sigset_t set;
- int gr8;
-
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
- if (__get_user(set.sig[0], &frame->sc.sc_oldmask))
- goto badframe;
-
- if (_NSIG_WORDS > 1 &&
- __copy_from_user(&set.sig[1], &frame->extramask, sizeof(frame->extramask)))
- goto badframe;
-
- set_current_blocked(&set);
-
- if (restore_sigcontext(&frame->sc, &gr8))
- goto badframe;
- return gr8;
-
- badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-asmlinkage int sys_rt_sigreturn(void)
-{
- struct rt_sigframe __user *frame = (struct rt_sigframe __user *) __frame->sp;
- sigset_t set;
- int gr8;
-
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
- if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
- goto badframe;
-
- set_current_blocked(&set);
-
- if (restore_sigcontext(&frame->uc.uc_mcontext, &gr8))
- goto badframe;
-
- if (restore_altstack(&frame->uc.uc_stack))
- goto badframe;
-
- return gr8;
-
-badframe:
- force_sig(SIGSEGV, current);
- return 0;
-}
-
-/*
- * Set up a signal frame
- */
-static int setup_sigcontext(struct sigcontext __user *sc, unsigned long mask)
-{
- save_user_regs(current->thread.user);
-
- if (copy_to_user(&sc->sc_context, current->thread.user, sizeof(sc->sc_context)) != 0)
- goto badframe;
-
- /* non-iBCS2 extensions.. */
- if (__put_user(mask, &sc->sc_oldmask) < 0)
- goto badframe;
-
- return 0;
-
- badframe:
- return 1;
-}
-
-/*****************************************************************************/
-/*
- * Determine which stack to use..
- */
-static inline void __user *get_sigframe(struct ksignal *ksig,
- size_t frame_size)
-{
- unsigned long sp = sigsp(__frame->sp, ksig);
-
- return (void __user *) ((sp - frame_size) & ~7UL);
-
-} /* end get_sigframe() */
-
-/*****************************************************************************/
-/*
- *
- */
-static int setup_frame(struct ksignal *ksig, sigset_t *set)
-{
- struct sigframe __user *frame;
- int sig = ksig->sig;
-
- frame = get_sigframe(ksig, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- return -EFAULT;
-
- if (__put_user(sig, &frame->sig) < 0)
- return -EFAULT;
-
- if (setup_sigcontext(&frame->sc, set->sig[0]))
- return -EFAULT;
-
- if (_NSIG_WORDS > 1) {
- if (__copy_to_user(frame->extramask, &set->sig[1],
- sizeof(frame->extramask)))
- return -EFAULT;
- }
-
- /* Set up to return from userspace. If provided, use a stub
- * already in userspace. */
- if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode) < 0)
- return -EFAULT;
- }
- else {
- /* Set up the following code on the stack:
- * setlos #__NR_sigreturn,gr7
- * tira gr0,0
- */
- if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) ||
- __put_user(0x8efc0000|__NR_sigreturn, &frame->retcode[0]) ||
- __put_user(0xc0700000, &frame->retcode[1]))
- return -EFAULT;
-
- flush_icache_range((unsigned long) frame->retcode,
- (unsigned long) (frame->retcode + 2));
- }
-
- /* Set up registers for the signal handler */
- if (current->personality & FDPIC_FUNCPTRS) {
- struct fdpic_func_descriptor __user *funcptr =
- (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler;
- struct fdpic_func_descriptor desc;
- if (copy_from_user(&desc, funcptr, sizeof(desc)))
- return -EFAULT;
- __frame->pc = desc.text;
- __frame->gr15 = desc.GOT;
- } else {
- __frame->pc = (unsigned long) ksig->ka.sa.sa_handler;
- __frame->gr15 = 0;
- }
-
- __frame->sp = (unsigned long) frame;
- __frame->lr = (unsigned long) &frame->retcode;
- __frame->gr8 = sig;
-
-#if DEBUG_SIG
- printk("SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n",
- sig, current->comm, current->pid, frame, __frame->pc,
- frame->pretcode);
-#endif
-
- return 0;
-} /* end setup_frame() */
-
-/*****************************************************************************/
-/*
- *
- */
-static int setup_rt_frame(struct ksignal *ksig, sigset_t *set)
-{
- struct rt_sigframe __user *frame;
- int sig = ksig->sig;
-
- frame = get_sigframe(ksig, sizeof(*frame));
-
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- return -EFAULT;
-
- if (__put_user(sig, &frame->sig) ||
- __put_user(&frame->info, &frame->pinfo) ||
- __put_user(&frame->uc, &frame->puc))
- return -EFAULT;
-
- if (copy_siginfo_to_user(&frame->info, &ksig->info))
- return -EFAULT;
-
- /* Create the ucontext. */
- if (__put_user(0, &frame->uc.uc_flags) ||
- __put_user(NULL, &frame->uc.uc_link) ||
- __save_altstack(&frame->uc.uc_stack, __frame->sp))
- return -EFAULT;
-
- if (setup_sigcontext(&frame->uc.uc_mcontext, set->sig[0]))
- return -EFAULT;
-
- if (__copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)))
- return -EFAULT;
-
- /* Set up to return from userspace. If provided, use a stub
- * already in userspace. */
- if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode))
- return -EFAULT;
- }
- else {
- /* Set up the following code on the stack:
- * setlos #__NR_sigreturn,gr7
- * tira gr0,0
- */
- if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) ||
- __put_user(0x8efc0000|__NR_rt_sigreturn, &frame->retcode[0]) ||
- __put_user(0xc0700000, &frame->retcode[1]))
- return -EFAULT;
-
- flush_icache_range((unsigned long) frame->retcode,
- (unsigned long) (frame->retcode + 2));
- }
-
- /* Set up registers for signal handler */
- if (current->personality & FDPIC_FUNCPTRS) {
- struct fdpic_func_descriptor __user *funcptr =
- (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler;
- struct fdpic_func_descriptor desc;
- if (copy_from_user(&desc, funcptr, sizeof(desc)))
- return -EFAULT;
- __frame->pc = desc.text;
- __frame->gr15 = desc.GOT;
- } else {
- __frame->pc = (unsigned long) ksig->ka.sa.sa_handler;
- __frame->gr15 = 0;
- }
-
- __frame->sp = (unsigned long) frame;
- __frame->lr = (unsigned long) &frame->retcode;
- __frame->gr8 = sig;
- __frame->gr9 = (unsigned long) &frame->info;
-
-#if DEBUG_SIG
- printk("SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n",
- sig, current->comm, current->pid, frame, __frame->pc,
- frame->pretcode);
-#endif
- return 0;
-
-} /* end setup_rt_frame() */
-
-/*****************************************************************************/
-/*
- * OK, we're invoking a handler
- */
-static void handle_signal(struct ksignal *ksig)
-{
- sigset_t *oldset = sigmask_to_save();
- int ret;
-
- /* Are we from a system call? */
- if (__frame->syscallno != -1) {
- /* If so, check system call restarting.. */
- switch (__frame->gr8) {
- case -ERESTART_RESTARTBLOCK:
- case -ERESTARTNOHAND:
- __frame->gr8 = -EINTR;
- break;
-
- case -ERESTARTSYS:
- if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
- __frame->gr8 = -EINTR;
- break;
- }
-
- /* fallthrough */
- case -ERESTARTNOINTR:
- __frame->gr8 = __frame->orig_gr8;
- __frame->pc -= 4;
- }
- __frame->syscallno = -1;
- }
-
- /* Set up the stack frame */
- if (ksig->ka.sa.sa_flags & SA_SIGINFO)
- ret = setup_rt_frame(ksig, oldset);
- else
- ret = setup_frame(ksig, oldset);
-
- signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
-} /* end handle_signal() */
-
-/*****************************************************************************/
-/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- */
-static void do_signal(void)
-{
- struct ksignal ksig;
-
- if (get_signal(&ksig)) {
- handle_signal(&ksig);
- return;
- }
-
- /* Did we come from a system call? */
- if (__frame->syscallno != -1) {
- /* Restart the system call - no handlers present */
- switch (__frame->gr8) {
- case -ERESTARTNOHAND:
- case -ERESTARTSYS:
- case -ERESTARTNOINTR:
- __frame->gr8 = __frame->orig_gr8;
- __frame->pc -= 4;
- break;
-
- case -ERESTART_RESTARTBLOCK:
- __frame->gr7 = __NR_restart_syscall;
- __frame->pc -= 4;
- break;
- }
- __frame->syscallno = -1;
- }
-
- /* if there's no signal to deliver, we just put the saved sigmask
- * back */
- restore_saved_sigmask();
-} /* end do_signal() */
-
-/*****************************************************************************/
-/*
- * notification of userspace execution resumption
- * - triggered by the TIF_WORK_MASK flags
- */
-asmlinkage void do_notify_resume(__u32 thread_info_flags)
-{
- /* pending single-step? */
- if (thread_info_flags & _TIF_SINGLESTEP)
- clear_thread_flag(TIF_SINGLESTEP);
-
- /* deal with pending signal delivery */
- if (thread_info_flags & _TIF_SIGPENDING)
- do_signal();
-
- /* deal with notification on about to resume userspace execution */
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
- tracehook_notify_resume(__frame);
- }
-
-} /* end do_notify_resume() */
+++ /dev/null
-/* sleep.S: power saving mode entry
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Woodhouse (dwmw2@infradead.org)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/sys.h>
-#include <linux/linkage.h>
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/ptrace.h>
-#include <asm/errno.h>
-#include <asm/cache.h>
-#include <asm/spr-regs.h>
-
-#define __addr_MASK 0xfeff9820 /* interrupt controller mask */
-
-#define __addr_FR55X_DRCN 0xfeff0218 /* Address of DRCN register */
-#define FR55X_DSTS_OFFSET -4 /* Offset from DRCN to DSTS */
-#define FR55X_SDRAMC_DSTS_SSI 0x00000002 /* indicates that the SDRAM is in self-refresh mode */
-
-#define __addr_FR4XX_DRCN 0xfe000430 /* Address of DRCN register */
-#define FR4XX_DSTS_OFFSET -8 /* Offset from DRCN to DSTS */
-#define FR4XX_SDRAMC_DSTS_SSI 0x00000001 /* indicates that the SDRAM is in self-refresh mode */
-
-#define SDRAMC_DRCN_SR 0x00000001 /* transition SDRAM into self-refresh mode */
-
- .section .bss
- .balign 8
- .globl __sleep_save_area
-__sleep_save_area:
- .space 16
-
-
- .text
- .balign 4
-
-.macro li v r
- sethi.p %hi(\v),\r
- setlo %lo(\v),\r
-.endm
-
-#ifdef CONFIG_PM
-###############################################################################
-#
-# CPU suspension routine
-# - void frv_cpu_suspend(unsigned long pdm_mode)
-#
-###############################################################################
- .globl frv_cpu_suspend
- .type frv_cpu_suspend,@function
-frv_cpu_suspend:
-
- #----------------------------------------------------
- # save hsr0, psr, isr, and lr for resume code
- #----------------------------------------------------
- li __sleep_save_area,gr11
-
- movsg hsr0,gr4
- movsg psr,gr5
- movsg isr,gr6
- movsg lr,gr7
- stdi gr4,@(gr11,#0)
- stdi gr6,@(gr11,#8)
-
- # store the return address from sleep in GR14, and its complement in GR13 as a check
- li __ramboot_resume,gr14
-#ifdef CONFIG_MMU
- # Resume via RAMBOOT# will turn MMU off, so bootloader needs a physical address.
- sethi.p %hi(__page_offset),gr13
- setlo %lo(__page_offset),gr13
- sub gr14,gr13,gr14
-#endif
- not gr14,gr13
-
- #----------------------------------------------------
- # preload and lock into icache that code which may have to run
- # when dram is in self-refresh state.
- #----------------------------------------------------
- movsg hsr0, gr3
- li HSR0_ICE,gr4
- or gr3,gr4,gr3
- movgs gr3,hsr0
- or gr3,gr8,gr7 // add the sleep bits for later
-
- li #__icache_lock_start,gr3
- li #__icache_lock_end,gr4
-1: icpl gr3,gr0,#1
- addi gr3,#L1_CACHE_BYTES,gr3
- cmp gr4,gr3,icc0
- bhi icc0,#0,1b
-
- # disable exceptions
- movsg psr,gr8
- andi.p gr8,#~PSR_PIL,gr8
- andi gr8,~PSR_ET,gr8
- movgs gr8,psr
- ori gr8,#PSR_ET,gr8
-
- srli gr8,#28,gr4
- subicc gr4,#3,gr0,icc0
- beq icc0,#0,1f
- # FR4xx
- li __addr_FR4XX_DRCN,gr4
- li FR4XX_SDRAMC_DSTS_SSI,gr5
- li FR4XX_DSTS_OFFSET,gr6
- bra __icache_lock_start
-1:
- # FR5xx
- li __addr_FR55X_DRCN,gr4
- li FR55X_SDRAMC_DSTS_SSI,gr5
- li FR55X_DSTS_OFFSET,gr6
- bra __icache_lock_start
-
- .size frv_cpu_suspend, .-frv_cpu_suspend
-
-#
-# the final part of the sleep sequence...
-# - we want it to be be cacheline aligned so we can lock it into the icache easily
-# On entry: gr7 holds desired hsr0 sleep value
-# gr8 holds desired psr sleep value
-#
- .balign L1_CACHE_BYTES
- .type __icache_lock_start,@function
-__icache_lock_start:
-
- #----------------------------------------------------
- # put SDRAM in self-refresh mode
- #----------------------------------------------------
-
- # Flush all data in the cache using the DCEF instruction.
- dcef @(gr0,gr0),#1
-
- # Stop DMAC transfer
-
- # Execute dummy load from SDRAM
- ldi @(gr11,#0),gr11
-
- # put the SDRAM into self-refresh mode
- ld @(gr4,gr0),gr11
- ori gr11,#SDRAMC_DRCN_SR,gr11
- st gr11,@(gr4,gr0)
- membar
-
- # wait for SDRAM to reach self-refresh mode
-1: ld @(gr4,gr6),gr11
- andcc gr11,gr5,gr11,icc0
- beq icc0,#0,1b
-
- # Set the GPIO register so that the IRQ[3:0] pins become valid, as required.
- # Set the clock mode (CLKC register) as required.
- # - At this time, also set the CLKC register P0 bit.
-
- # Set the HSR0 register PDM field.
- movgs gr7,hsr0
-
- # Execute NOP 32 times.
- .rept 32
- nop
- .endr
-
-#if 0 // Fujitsu recommend to skip this and will update docs.
- # Release the interrupt mask setting of the MASK register of the
- # interrupt controller if necessary.
- sti gr10,@(gr9,#0)
- membar
-#endif
-
- # Set the PSR register ET bit to 1 to enable interrupts.
- movgs gr8,psr
-
- ###################################################
- # this is only reached if waking up via interrupt
- ###################################################
-
- # Execute NOP 32 times.
- .rept 32
- nop
- .endr
-
- #----------------------------------------------------
- # wake SDRAM from self-refresh mode
- #----------------------------------------------------
- ld @(gr4,gr0),gr11
- andi gr11,#~SDRAMC_DRCN_SR,gr11
- st gr11,@(gr4,gr0)
- membar
-2:
- ld @(gr4,gr6),gr11 // Wait for it to come back...
- andcc gr11,gr5,gr0,icc0
- bne icc0,0,2b
-
- # wait for the SDRAM to stabilise
- li 0x0100000,gr3
-3: subicc gr3,#1,gr3,icc0
- bne icc0,#0,3b
-
- # now that DRAM is back, this is the end of the code which gets
- # locked in icache.
-__icache_lock_end:
- .size __icache_lock_start, .-__icache_lock_start
-
- # Fall-through to the RAMBOOT# wakeup path
-
-###############################################################################
-#
-# resume from suspend re-entry point reached via RAMBOOT# and bootloader
-#
-###############################################################################
-__ramboot_resume:
-
- #----------------------------------------------------
- # restore hsr0, psr, isr, and leave saved lr in gr7
- #----------------------------------------------------
- li __sleep_save_area,gr11
-#ifdef CONFIG_MMU
- movsg hsr0,gr4
- sethi.p %hi(HSR0_EXMMU),gr3
- setlo %lo(HSR0_EXMMU),gr3
- andcc gr3,gr4,gr0,icc0
- bne icc0,#0,2f
-
- # need to use physical address
- sethi.p %hi(__page_offset),gr3
- setlo %lo(__page_offset),gr3
- sub gr11,gr3,gr11
-
- # flush all tlb entries
- setlos #64,gr4
- setlos.p #PAGE_SIZE,gr5
- setlos #0,gr6
-1:
- tlbpr gr6,gr0,#6,#0
- subicc.p gr4,#1,gr4,icc0
- add gr6,gr5,gr6
- bne icc0,#2,1b
-
- # need a temporary mapping for the current physical address we are
- # using between time MMU is enabled and jump to virtual address is
- # made.
- sethi.p %hi(0x00000000),gr4
- setlo %lo(0x00000000),gr4 ; physical address
- setlos #xAMPRx_L|xAMPRx_M|xAMPRx_SS_256Mb|xAMPRx_S_KERNEL|xAMPRx_V,gr5
- or gr4,gr5,gr5
-
- movsg cxnr,gr13
- or gr4,gr13,gr4
-
- movgs gr4,iamlr1 ; mapped from real address 0
- movgs gr5,iampr1 ; cached kernel memory at 0x00000000
-2:
-#endif
-
- lddi @(gr11,#0),gr4 ; hsr0, psr
- lddi @(gr11,#8),gr6 ; isr, lr
- movgs gr4,hsr0
- bar
-
-#ifdef CONFIG_MMU
- sethi.p %hi(1f),gr11
- setlo %lo(1f),gr11
- jmpl @(gr11,gr0)
-1:
- movgs gr0,iampr1 ; get rid of temporary mapping
-#endif
- movgs gr5,psr
- movgs gr6,isr
-
- #----------------------------------------------------
- # unlock the icache which was locked before going to sleep
- #----------------------------------------------------
- li __icache_lock_start,gr3
- li __icache_lock_end,gr4
-1: icul gr3
- addi gr3,#L1_CACHE_BYTES,gr3
- cmp gr4,gr3,icc0
- bhi icc0,#0,1b
-
- #----------------------------------------------------
- # back to business as usual
- #----------------------------------------------------
- jmpl @(gr7,gr0) ;
-
-#endif /* CONFIG_PM */
-
-###############################################################################
-#
-# CPU core sleep mode routine
-#
-###############################################################################
- .globl frv_cpu_core_sleep
- .type frv_cpu_core_sleep,@function
-frv_cpu_core_sleep:
-
- # Preload into icache.
- li #__core_sleep_icache_lock_start,gr3
- li #__core_sleep_icache_lock_end,gr4
-
-1: icpl gr3,gr0,#1
- addi gr3,#L1_CACHE_BYTES,gr3
- cmp gr4,gr3,icc0
- bhi icc0,#0,1b
-
- bra __core_sleep_icache_lock_start
-
- .balign L1_CACHE_BYTES
-__core_sleep_icache_lock_start:
-
- # (1) Set the PSR register ET bit to 0 to disable interrupts.
- movsg psr,gr8
- andi.p gr8,#~(PSR_PIL),gr8
- andi gr8,#~(PSR_ET),gr4
- movgs gr4,psr
-
-#if 0 // Fujitsu recommend to skip this and will update docs.
- # (2) Set '1' to all bits in the MASK register of the interrupt
- # controller and mask interrupts.
- sethi.p %hi(__addr_MASK),gr9
- setlo %lo(__addr_MASK),gr9
- sethi.p %hi(0xffff0000),gr4
- setlo %lo(0xffff0000),gr4
- ldi @(gr9,#0),gr10
- sti gr4,@(gr9,#0)
-#endif
- # (3) Flush all data in the cache using the DCEF instruction.
- dcef @(gr0,gr0),#1
-
- # (4) Execute the memory barrier instruction
- membar
-
- # (5) Set the GPIO register so that the IRQ[3:0] pins become valid, as required.
- # (6) Set the clock mode (CLKC register) as required.
- # - At this time, also set the CLKC register P0 bit.
- # (7) Set the HSR0 register PDM field to 001 .
- movsg hsr0,gr4
- ori gr4,HSR0_PDM_CORE_SLEEP,gr4
- movgs gr4,hsr0
-
- # (8) Execute NOP 32 times.
- .rept 32
- nop
- .endr
-
-#if 0 // Fujitsu recommend to skip this and will update docs.
- # (9) Release the interrupt mask setting of the MASK register of the
- # interrupt controller if necessary.
- sti gr10,@(gr9,#0)
- membar
-#endif
-
- # (10) Set the PSR register ET bit to 1 to enable interrupts.
- movgs gr8,psr
-
-__core_sleep_icache_lock_end:
-
- # Unlock from icache
- li __core_sleep_icache_lock_start,gr3
- li __core_sleep_icache_lock_end,gr4
-1: icul gr3
- addi gr3,#L1_CACHE_BYTES,gr3
- cmp gr4,gr3,icc0
- bhi icc0,#0,1b
-
- bralr
-
- .size frv_cpu_core_sleep, .-frv_cpu_core_sleep
+++ /dev/null
-###############################################################################
-#
-# switch_to.S: context switch operation
-#
-# Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
-# Written by David Howells (dhowells@redhat.com)
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version
-# 2 of the License, or (at your option) any later version.
-#
-###############################################################################
-
-#include <linux/linkage.h>
-#include <asm/thread_info.h>
-#include <asm/processor.h>
-#include <asm/registers.h>
-#include <asm/spr-regs.h>
-
-.macro LEDS val
- setlos #~\val,gr27
- st gr27,@(gr30,gr0)
- membar
- dcf @(gr30,gr0)
-.endm
-
- .section .sdata
- .balign 8
-
- # address of frame 0 (userspace) on current kernel stack
- .globl __kernel_frame0_ptr
-__kernel_frame0_ptr:
- .long init_thread_union + THREAD_SIZE - FRV_FRAME0_SIZE
-
- # address of current task
- .globl __kernel_current_task
-__kernel_current_task:
- .long init_task
-
- .section .text
- .balign 4
-
-###############################################################################
-#
-# struct task_struct *__switch_to(struct thread_struct *prev_thread,
-# struct thread_struct *next_thread,
-# struct task_struct *prev)
-#
-###############################################################################
- .globl __switch_to
-__switch_to:
- # save outgoing process's context
- sethi.p %hi(__switch_back),gr13
- setlo %lo(__switch_back),gr13
- movsg lr,gr12
-
- stdi gr28,@(gr8,#__THREAD_FRAME)
- sti sp ,@(gr8,#__THREAD_SP)
- sti fp ,@(gr8,#__THREAD_FP)
- stdi gr12,@(gr8,#__THREAD_LR)
- stdi gr16,@(gr8,#__THREAD_GR(16))
- stdi gr18,@(gr8,#__THREAD_GR(18))
- stdi gr20,@(gr8,#__THREAD_GR(20))
- stdi gr22,@(gr8,#__THREAD_GR(22))
- stdi gr24,@(gr8,#__THREAD_GR(24))
- stdi.p gr26,@(gr8,#__THREAD_GR(26))
-
- or gr8,gr8,gr22
- ldi.p @(gr8,#__THREAD_USER),gr8
- call save_user_regs
- or gr22,gr22,gr8
-
- # retrieve the new context
- sethi.p %hi(__kernel_frame0_ptr),gr6
- setlo %lo(__kernel_frame0_ptr),gr6
- movsg psr,gr4
-
- lddi.p @(gr9,#__THREAD_FRAME),gr10
- or gr10,gr10,gr27 ; save prev for the return value
-
- ldi @(gr11,#4),gr19 ; get new_current->thread_info
-
- lddi @(gr9,#__THREAD_SP),gr12
- ldi @(gr9,#__THREAD_LR),gr14
- ldi @(gr9,#__THREAD_PC),gr18
- ldi.p @(gr9,#__THREAD_FRAME0),gr7
-
- # actually switch kernel contexts with ordinary exceptions disabled
- andi gr4,#~PSR_ET,gr5
- movgs gr5,psr
-
- or.p gr10,gr0,gr28 ; set __frame
- or gr11,gr0,gr29 ; set __current
- or.p gr12,gr0,sp
- or gr13,gr0,fp
- or gr19,gr0,gr15 ; set __current_thread_info
-
- sti gr7,@(gr6,#0) ; set __kernel_frame0_ptr
- sti gr29,@(gr6,#4) ; set __kernel_current_task
-
- movgs gr14,lr
- bar
-
- # jump to __switch_back or ret_from_fork as appropriate
- # - move prev to GR8
- movgs gr4,psr
- jmpl.p @(gr18,gr0)
- or gr27,gr27,gr8
-
-###############################################################################
-#
-# restore incoming process's context
-# - on entry:
-# - SP, FP, LR, GR15, GR28 and GR29 will have been set up appropriately
-# - GR8 will point to the outgoing task_struct
-# - GR9 will point to the incoming thread_struct
-#
-###############################################################################
-__switch_back:
- lddi @(gr9,#__THREAD_GR(16)),gr16
- lddi @(gr9,#__THREAD_GR(18)),gr18
- lddi @(gr9,#__THREAD_GR(20)),gr20
- lddi @(gr9,#__THREAD_GR(22)),gr22
- lddi @(gr9,#__THREAD_GR(24)),gr24
- lddi @(gr9,#__THREAD_GR(26)),gr26
-
- # fall through into restore_user_regs()
- ldi.p @(gr9,#__THREAD_USER),gr8
- or gr8,gr8,gr9
-
-###############################################################################
-#
-# restore extra general regs and FP/Media regs
-# - void *restore_user_regs(const struct user_context *target, void *retval)
-# - on entry:
-# - GR8 will point to the user context to swap in
-# - GR9 will contain the value to be returned in GR8 (prev task on context switch)
-#
-###############################################################################
- .globl restore_user_regs
-restore_user_regs:
- movsg hsr0,gr6
- ori gr6,#HSR0_GRHE|HSR0_FRLE|HSR0_FRHE,gr6
- movgs gr6,hsr0
- movsg hsr0,gr6
-
- movsg psr,gr7
- ori gr7,#PSR_EF|PSR_EM,gr7
- movgs gr7,psr
- movsg psr,gr7
- srli gr7,#24,gr7
- bar
-
- lddi @(gr8,#__FPMEDIA_MSR(0)),gr4
-
- movgs gr4,msr0
- movgs gr5,msr1
-
- lddfi @(gr8,#__FPMEDIA_ACC(0)),fr16
- lddfi @(gr8,#__FPMEDIA_ACC(2)),fr18
- ldbfi @(gr8,#__FPMEDIA_ACCG(0)),fr20
- ldbfi @(gr8,#__FPMEDIA_ACCG(1)),fr21
- ldbfi @(gr8,#__FPMEDIA_ACCG(2)),fr22
- ldbfi @(gr8,#__FPMEDIA_ACCG(3)),fr23
-
- mwtacc fr16,acc0
- mwtacc fr17,acc1
- mwtacc fr18,acc2
- mwtacc fr19,acc3
- mwtaccg fr20,accg0
- mwtaccg fr21,accg1
- mwtaccg fr22,accg2
- mwtaccg fr23,accg3
-
- # some CPUs have extra ACCx and ACCGx regs and maybe FSRx regs
- subicc.p gr7,#0x50,gr0,icc0
- subicc gr7,#0x31,gr0,icc1
- beq icc0,#0,__restore_acc_fr451
- beq icc1,#0,__restore_acc_fr555
-__restore_acc_cont:
-
- # some CPU's have GR32-GR63
- setlos #HSR0_FRHE,gr4
- andcc gr6,gr4,gr0,icc0
- beq icc0,#1,__restore_skip_gr32_gr63
-
- lddi @(gr8,#__INT_GR(32)),gr32
- lddi @(gr8,#__INT_GR(34)),gr34
- lddi @(gr8,#__INT_GR(36)),gr36
- lddi @(gr8,#__INT_GR(38)),gr38
- lddi @(gr8,#__INT_GR(40)),gr40
- lddi @(gr8,#__INT_GR(42)),gr42
- lddi @(gr8,#__INT_GR(44)),gr44
- lddi @(gr8,#__INT_GR(46)),gr46
- lddi @(gr8,#__INT_GR(48)),gr48
- lddi @(gr8,#__INT_GR(50)),gr50
- lddi @(gr8,#__INT_GR(52)),gr52
- lddi @(gr8,#__INT_GR(54)),gr54
- lddi @(gr8,#__INT_GR(56)),gr56
- lddi @(gr8,#__INT_GR(58)),gr58
- lddi @(gr8,#__INT_GR(60)),gr60
- lddi @(gr8,#__INT_GR(62)),gr62
-__restore_skip_gr32_gr63:
-
- # all CPU's have FR0-FR31
- lddfi @(gr8,#__FPMEDIA_FR( 0)),fr0
- lddfi @(gr8,#__FPMEDIA_FR( 2)),fr2
- lddfi @(gr8,#__FPMEDIA_FR( 4)),fr4
- lddfi @(gr8,#__FPMEDIA_FR( 6)),fr6
- lddfi @(gr8,#__FPMEDIA_FR( 8)),fr8
- lddfi @(gr8,#__FPMEDIA_FR(10)),fr10
- lddfi @(gr8,#__FPMEDIA_FR(12)),fr12
- lddfi @(gr8,#__FPMEDIA_FR(14)),fr14
- lddfi @(gr8,#__FPMEDIA_FR(16)),fr16
- lddfi @(gr8,#__FPMEDIA_FR(18)),fr18
- lddfi @(gr8,#__FPMEDIA_FR(20)),fr20
- lddfi @(gr8,#__FPMEDIA_FR(22)),fr22
- lddfi @(gr8,#__FPMEDIA_FR(24)),fr24
- lddfi @(gr8,#__FPMEDIA_FR(26)),fr26
- lddfi @(gr8,#__FPMEDIA_FR(28)),fr28
- lddfi.p @(gr8,#__FPMEDIA_FR(30)),fr30
-
- # some CPU's have FR32-FR63
- setlos #HSR0_FRHE,gr4
- andcc gr6,gr4,gr0,icc0
- beq icc0,#1,__restore_skip_fr32_fr63
-
- lddfi @(gr8,#__FPMEDIA_FR(32)),fr32
- lddfi @(gr8,#__FPMEDIA_FR(34)),fr34
- lddfi @(gr8,#__FPMEDIA_FR(36)),fr36
- lddfi @(gr8,#__FPMEDIA_FR(38)),fr38
- lddfi @(gr8,#__FPMEDIA_FR(40)),fr40
- lddfi @(gr8,#__FPMEDIA_FR(42)),fr42
- lddfi @(gr8,#__FPMEDIA_FR(44)),fr44
- lddfi @(gr8,#__FPMEDIA_FR(46)),fr46
- lddfi @(gr8,#__FPMEDIA_FR(48)),fr48
- lddfi @(gr8,#__FPMEDIA_FR(50)),fr50
- lddfi @(gr8,#__FPMEDIA_FR(52)),fr52
- lddfi @(gr8,#__FPMEDIA_FR(54)),fr54
- lddfi @(gr8,#__FPMEDIA_FR(56)),fr56
- lddfi @(gr8,#__FPMEDIA_FR(58)),fr58
- lddfi @(gr8,#__FPMEDIA_FR(60)),fr60
- lddfi @(gr8,#__FPMEDIA_FR(62)),fr62
-__restore_skip_fr32_fr63:
-
- lddi @(gr8,#__FPMEDIA_FNER(0)),gr4
- movsg fner0,gr4
- movsg fner1,gr5
- or.p gr9,gr9,gr8
- bralr
-
- # the FR451 also has ACC8-11/ACCG8-11 regs (but not 4-7...)
-__restore_acc_fr451:
- lddfi @(gr8,#__FPMEDIA_ACC(4)),fr16
- lddfi @(gr8,#__FPMEDIA_ACC(6)),fr18
- ldbfi @(gr8,#__FPMEDIA_ACCG(4)),fr20
- ldbfi @(gr8,#__FPMEDIA_ACCG(5)),fr21
- ldbfi @(gr8,#__FPMEDIA_ACCG(6)),fr22
- ldbfi @(gr8,#__FPMEDIA_ACCG(7)),fr23
-
- mwtacc fr16,acc8
- mwtacc fr17,acc9
- mwtacc fr18,acc10
- mwtacc fr19,acc11
- mwtaccg fr20,accg8
- mwtaccg fr21,accg9
- mwtaccg fr22,accg10
- mwtaccg fr23,accg11
- bra __restore_acc_cont
-
- # the FR555 also has ACC4-7/ACCG4-7 regs and an FSR0 reg
-__restore_acc_fr555:
- lddfi @(gr8,#__FPMEDIA_ACC(4)),fr16
- lddfi @(gr8,#__FPMEDIA_ACC(6)),fr18
- ldbfi @(gr8,#__FPMEDIA_ACCG(4)),fr20
- ldbfi @(gr8,#__FPMEDIA_ACCG(5)),fr21
- ldbfi @(gr8,#__FPMEDIA_ACCG(6)),fr22
- ldbfi @(gr8,#__FPMEDIA_ACCG(7)),fr23
-
- mnop.p
- mwtacc fr16,acc4
- mnop.p
- mwtacc fr17,acc5
- mnop.p
- mwtacc fr18,acc6
- mnop.p
- mwtacc fr19,acc7
- mnop.p
- mwtaccg fr20,accg4
- mnop.p
- mwtaccg fr21,accg5
- mnop.p
- mwtaccg fr22,accg6
- mnop.p
- mwtaccg fr23,accg7
-
- ldi @(gr8,#__FPMEDIA_FSR(0)),gr4
- movgs gr4,fsr0
-
- bra __restore_acc_cont
-
-
-###############################################################################
-#
-# save extra general regs and FP/Media regs
-# - void save_user_regs(struct user_context *target)
-#
-###############################################################################
- .globl save_user_regs
-save_user_regs:
- movsg hsr0,gr6
- ori gr6,#HSR0_GRHE|HSR0_FRLE|HSR0_FRHE,gr6
- movgs gr6,hsr0
- movsg hsr0,gr6
-
- movsg psr,gr7
- ori gr7,#PSR_EF|PSR_EM,gr7
- movgs gr7,psr
- movsg psr,gr7
- srli gr7,#24,gr7
- bar
-
- movsg fner0,gr4
- movsg fner1,gr5
- stdi.p gr4,@(gr8,#__FPMEDIA_FNER(0))
-
- # some CPU's have GR32-GR63
- setlos #HSR0_GRHE,gr4
- andcc gr6,gr4,gr0,icc0
- beq icc0,#1,__save_skip_gr32_gr63
-
- stdi gr32,@(gr8,#__INT_GR(32))
- stdi gr34,@(gr8,#__INT_GR(34))
- stdi gr36,@(gr8,#__INT_GR(36))
- stdi gr38,@(gr8,#__INT_GR(38))
- stdi gr40,@(gr8,#__INT_GR(40))
- stdi gr42,@(gr8,#__INT_GR(42))
- stdi gr44,@(gr8,#__INT_GR(44))
- stdi gr46,@(gr8,#__INT_GR(46))
- stdi gr48,@(gr8,#__INT_GR(48))
- stdi gr50,@(gr8,#__INT_GR(50))
- stdi gr52,@(gr8,#__INT_GR(52))
- stdi gr54,@(gr8,#__INT_GR(54))
- stdi gr56,@(gr8,#__INT_GR(56))
- stdi gr58,@(gr8,#__INT_GR(58))
- stdi gr60,@(gr8,#__INT_GR(60))
- stdi gr62,@(gr8,#__INT_GR(62))
-__save_skip_gr32_gr63:
-
- # all CPU's have FR0-FR31
- stdfi fr0 ,@(gr8,#__FPMEDIA_FR( 0))
- stdfi fr2 ,@(gr8,#__FPMEDIA_FR( 2))
- stdfi fr4 ,@(gr8,#__FPMEDIA_FR( 4))
- stdfi fr6 ,@(gr8,#__FPMEDIA_FR( 6))
- stdfi fr8 ,@(gr8,#__FPMEDIA_FR( 8))
- stdfi fr10,@(gr8,#__FPMEDIA_FR(10))
- stdfi fr12,@(gr8,#__FPMEDIA_FR(12))
- stdfi fr14,@(gr8,#__FPMEDIA_FR(14))
- stdfi fr16,@(gr8,#__FPMEDIA_FR(16))
- stdfi fr18,@(gr8,#__FPMEDIA_FR(18))
- stdfi fr20,@(gr8,#__FPMEDIA_FR(20))
- stdfi fr22,@(gr8,#__FPMEDIA_FR(22))
- stdfi fr24,@(gr8,#__FPMEDIA_FR(24))
- stdfi fr26,@(gr8,#__FPMEDIA_FR(26))
- stdfi fr28,@(gr8,#__FPMEDIA_FR(28))
- stdfi.p fr30,@(gr8,#__FPMEDIA_FR(30))
-
- # some CPU's have FR32-FR63
- setlos #HSR0_FRHE,gr4
- andcc gr6,gr4,gr0,icc0
- beq icc0,#1,__save_skip_fr32_fr63
-
- stdfi fr32,@(gr8,#__FPMEDIA_FR(32))
- stdfi fr34,@(gr8,#__FPMEDIA_FR(34))
- stdfi fr36,@(gr8,#__FPMEDIA_FR(36))
- stdfi fr38,@(gr8,#__FPMEDIA_FR(38))
- stdfi fr40,@(gr8,#__FPMEDIA_FR(40))
- stdfi fr42,@(gr8,#__FPMEDIA_FR(42))
- stdfi fr44,@(gr8,#__FPMEDIA_FR(44))
- stdfi fr46,@(gr8,#__FPMEDIA_FR(46))
- stdfi fr48,@(gr8,#__FPMEDIA_FR(48))
- stdfi fr50,@(gr8,#__FPMEDIA_FR(50))
- stdfi fr52,@(gr8,#__FPMEDIA_FR(52))
- stdfi fr54,@(gr8,#__FPMEDIA_FR(54))
- stdfi fr56,@(gr8,#__FPMEDIA_FR(56))
- stdfi fr58,@(gr8,#__FPMEDIA_FR(58))
- stdfi fr60,@(gr8,#__FPMEDIA_FR(60))
- stdfi fr62,@(gr8,#__FPMEDIA_FR(62))
-__save_skip_fr32_fr63:
-
- mrdacc acc0 ,fr4
- mrdacc acc1 ,fr5
-
- stdfi.p fr4 ,@(gr8,#__FPMEDIA_ACC(0))
-
- mrdacc acc2 ,fr6
- mrdacc acc3 ,fr7
-
- stdfi.p fr6 ,@(gr8,#__FPMEDIA_ACC(2))
-
- mrdaccg accg0,fr4
- stbfi.p fr4 ,@(gr8,#__FPMEDIA_ACCG(0))
-
- mrdaccg accg1,fr5
- stbfi.p fr5 ,@(gr8,#__FPMEDIA_ACCG(1))
-
- mrdaccg accg2,fr6
- stbfi.p fr6 ,@(gr8,#__FPMEDIA_ACCG(2))
-
- mrdaccg accg3,fr7
- stbfi fr7 ,@(gr8,#__FPMEDIA_ACCG(3))
-
- movsg msr0 ,gr4
- movsg msr1 ,gr5
-
- stdi gr4 ,@(gr8,#__FPMEDIA_MSR(0))
-
- # some CPUs have extra ACCx and ACCGx regs and maybe FSRx regs
- subicc.p gr7,#0x50,gr0,icc0
- subicc gr7,#0x31,gr0,icc1
- beq icc0,#0,__save_acc_fr451
- beq icc1,#0,__save_acc_fr555
-__save_acc_cont:
-
- lddfi @(gr8,#__FPMEDIA_FR(4)),fr4
- lddfi.p @(gr8,#__FPMEDIA_FR(6)),fr6
- bralr
-
- # the FR451 also has ACC8-11/ACCG8-11 regs (but not 4-7...)
-__save_acc_fr451:
- mrdacc acc8 ,fr4
- mrdacc acc9 ,fr5
-
- stdfi.p fr4 ,@(gr8,#__FPMEDIA_ACC(4))
-
- mrdacc acc10,fr6
- mrdacc acc11,fr7
-
- stdfi.p fr6 ,@(gr8,#__FPMEDIA_ACC(6))
-
- mrdaccg accg8,fr4
- stbfi.p fr4 ,@(gr8,#__FPMEDIA_ACCG(4))
-
- mrdaccg accg9,fr5
- stbfi.p fr5 ,@(gr8,#__FPMEDIA_ACCG(5))
-
- mrdaccg accg10,fr6
- stbfi.p fr6 ,@(gr8,#__FPMEDIA_ACCG(6))
-
- mrdaccg accg11,fr7
- stbfi fr7 ,@(gr8,#__FPMEDIA_ACCG(7))
- bra __save_acc_cont
-
- # the FR555 also has ACC4-7/ACCG4-7 regs and an FSR0 reg
-__save_acc_fr555:
- mnop.p
- mrdacc acc4 ,fr4
- mnop.p
- mrdacc acc5 ,fr5
-
- stdfi fr4 ,@(gr8,#__FPMEDIA_ACC(4))
-
- mnop.p
- mrdacc acc6 ,fr6
- mnop.p
- mrdacc acc7 ,fr7
-
- stdfi fr6 ,@(gr8,#__FPMEDIA_ACC(6))
-
- mnop.p
- mrdaccg accg4,fr4
- stbfi fr4 ,@(gr8,#__FPMEDIA_ACCG(4))
-
- mnop.p
- mrdaccg accg5,fr5
- stbfi fr5 ,@(gr8,#__FPMEDIA_ACCG(5))
-
- mnop.p
- mrdaccg accg6,fr6
- stbfi fr6 ,@(gr8,#__FPMEDIA_ACCG(6))
-
- mnop.p
- mrdaccg accg7,fr7
- stbfi fr7 ,@(gr8,#__FPMEDIA_ACCG(7))
-
- movsg fsr0 ,gr4
- sti gr4 ,@(gr8,#__FPMEDIA_FSR(0))
- bra __save_acc_cont
+++ /dev/null
-/* sys_frv.c: FRV arch-specific syscall wrappers
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/sys_m68k.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/smp.h>
-#include <linux/sem.h>
-#include <linux/msg.h>
-#include <linux/shm.h>
-#include <linux/stat.h>
-#include <linux/mman.h>
-#include <linux/file.h>
-#include <linux/syscalls.h>
-#include <linux/ipc.h>
-
-#include <asm/setup.h>
-#include <linux/uaccess.h>
-
-asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff)
-{
- /* As with sparc32, make sure the shift for mmap2 is constant
- (12), no matter what PAGE_SIZE we have.... */
-
- /* But unlike sparc32, don't just silently break if we're
- trying to map something we can't */
- if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1))
- return -EINVAL;
-
- return sys_mmap_pgoff(addr, len, prot, flags, fd,
- pgoff >> (PAGE_SHIFT - 12));
-}
+++ /dev/null
-/* sysctl.c: implementation of /proc/sys files relating to FRV specifically
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-#include <linux/uaccess.h>
-
-static const char frv_cache_wback[] = "wback";
-static const char frv_cache_wthru[] = "wthru";
-
-static void frv_change_dcache_mode(unsigned long newmode)
-{
- unsigned long flags, hsr0;
-
- local_irq_save(flags);
-
- hsr0 = __get_HSR(0);
- hsr0 &= ~HSR0_DCE;
- __set_HSR(0, hsr0);
-
- asm volatile(" dcef @(gr0,gr0),#1 \n"
- " membar \n"
- : : : "memory"
- );
-
- hsr0 = (hsr0 & ~HSR0_CBM) | newmode;
- __set_HSR(0, hsr0);
- hsr0 |= HSR0_DCE;
- __set_HSR(0, hsr0);
-
- local_irq_restore(flags);
-
- //printk("HSR0 now %08lx\n", hsr0);
-}
-
-/*****************************************************************************/
-/*
- * handle requests to dynamically switch the write caching mode delivered by /proc
- */
-static int procctl_frv_cachemode(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
-{
- unsigned long hsr0;
- char buff[8];
- int len;
-
- len = *lenp;
-
- if (write) {
- /* potential state change */
- if (len <= 1 || len > sizeof(buff) - 1)
- return -EINVAL;
-
- if (copy_from_user(buff, buffer, len) != 0)
- return -EFAULT;
-
- if (buff[len - 1] == '\n')
- buff[len - 1] = '\0';
- else
- buff[len] = '\0';
-
- if (strcmp(buff, frv_cache_wback) == 0) {
- /* switch dcache into write-back mode */
- frv_change_dcache_mode(HSR0_CBM_COPY_BACK);
- return 0;
- }
-
- if (strcmp(buff, frv_cache_wthru) == 0) {
- /* switch dcache into write-through mode */
- frv_change_dcache_mode(HSR0_CBM_WRITE_THRU);
- return 0;
- }
-
- return -EINVAL;
- }
-
- /* read the state */
- if (*ppos > 0) {
- *lenp = 0;
- return 0;
- }
-
- hsr0 = __get_HSR(0);
- switch (hsr0 & HSR0_CBM) {
- case HSR0_CBM_WRITE_THRU:
- memcpy(buff, frv_cache_wthru, sizeof(frv_cache_wthru) - 1);
- buff[sizeof(frv_cache_wthru) - 1] = '\n';
- len = sizeof(frv_cache_wthru);
- break;
- default:
- memcpy(buff, frv_cache_wback, sizeof(frv_cache_wback) - 1);
- buff[sizeof(frv_cache_wback) - 1] = '\n';
- len = sizeof(frv_cache_wback);
- break;
- }
-
- if (len > *lenp)
- len = *lenp;
-
- if (copy_to_user(buffer, buff, len) != 0)
- return -EFAULT;
-
- *lenp = len;
- *ppos = len;
- return 0;
-
-} /* end procctl_frv_cachemode() */
-
-/*****************************************************************************/
-/*
- * permit the mm_struct the nominated process is using have its MMU context ID pinned
- */
-#ifdef CONFIG_MMU
-static int procctl_frv_pin_cxnr(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp,
- loff_t *ppos)
-{
- pid_t pid;
- char buff[16], *p;
- int len;
-
- len = *lenp;
-
- if (write) {
- /* potential state change */
- if (len <= 1 || len > sizeof(buff) - 1)
- return -EINVAL;
-
- if (copy_from_user(buff, buffer, len) != 0)
- return -EFAULT;
-
- if (buff[len - 1] == '\n')
- buff[len - 1] = '\0';
- else
- buff[len] = '\0';
-
- pid = simple_strtoul(buff, &p, 10);
- if (*p)
- return -EINVAL;
-
- return cxn_pin_by_pid(pid);
- }
-
- /* read the currently pinned CXN */
- if (*ppos > 0) {
- *lenp = 0;
- return 0;
- }
-
- len = snprintf(buff, sizeof(buff), "%d\n", cxn_pinned);
- if (len > *lenp)
- len = *lenp;
-
- if (copy_to_user(buffer, buff, len) != 0)
- return -EFAULT;
-
- *lenp = len;
- *ppos = len;
- return 0;
-
-} /* end procctl_frv_pin_cxnr() */
-#endif
-
-/*
- * FR-V specific sysctls
- */
-static struct ctl_table frv_table[] =
-{
- {
- .procname = "cache-mode",
- .data = NULL,
- .maxlen = 0,
- .mode = 0644,
- .proc_handler = procctl_frv_cachemode,
- },
-#ifdef CONFIG_MMU
- {
- .procname = "pin-cxnr",
- .data = NULL,
- .maxlen = 0,
- .mode = 0644,
- .proc_handler = procctl_frv_pin_cxnr
- },
-#endif
- {}
-};
-
-/*
- * Use a temporary sysctl number. Horrid, but will be cleaned up in 2.6
- * when all the PM interfaces exist nicely.
- */
-static struct ctl_table frv_dir_table[] =
-{
- {
- .procname = "frv",
- .mode = 0555,
- .child = frv_table
- },
- {}
-};
-
-/*
- * Initialize power interface
- */
-static int __init frv_sysctl_init(void)
-{
- register_sysctl_table(frv_dir_table);
- return 0;
-}
-
-__initcall(frv_sysctl_init);
+++ /dev/null
-/* time.c: FRV arch-specific time handling
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/time.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/interrupt.h>
-#include <linux/profile.h>
-#include <linux/irq.h>
-#include <linux/mm.h>
-
-#include <asm/io.h>
-#include <asm/timer-regs.h>
-#include <asm/mb-regs.h>
-#include <asm/mb86943a.h>
-
-#include <linux/timex.h>
-
-#define TICK_SIZE (tick_nsec / 1000)
-
-unsigned long __nongprelbss __clkin_clock_speed_HZ;
-unsigned long __nongprelbss __ext_bus_clock_speed_HZ;
-unsigned long __nongprelbss __res_bus_clock_speed_HZ;
-unsigned long __nongprelbss __sdram_clock_speed_HZ;
-unsigned long __nongprelbss __core_bus_clock_speed_HZ;
-unsigned long __nongprelbss __core_clock_speed_HZ;
-unsigned long __nongprelbss __dsu_clock_speed_HZ;
-unsigned long __nongprelbss __serial_clock_speed_HZ;
-unsigned long __delay_loops_MHz;
-
-static irqreturn_t timer_interrupt(int irq, void *dummy);
-
-static struct irqaction timer_irq = {
- .handler = timer_interrupt,
- .name = "timer",
-};
-
-/*
- * timer_interrupt() needs to keep up the real-time clock,
- * as well as call the "xtime_update()" routine every clocktick
- */
-static irqreturn_t timer_interrupt(int irq, void *dummy)
-{
- profile_tick(CPU_PROFILING);
-
- xtime_update(1);
-
-#ifdef CONFIG_HEARTBEAT
- static unsigned short n;
- n++;
- __set_LEDS(n);
-#endif /* CONFIG_HEARTBEAT */
-
- update_process_times(user_mode(get_irq_regs()));
-
- return IRQ_HANDLED;
-}
-
-void time_divisor_init(void)
-{
- unsigned short base, pre, prediv;
-
- /* set the scheduling timer going */
- pre = 1;
- prediv = 4;
- base = __res_bus_clock_speed_HZ / pre / HZ / (1 << prediv);
-
- __set_TPRV(pre);
- __set_TxCKSL_DATA(0, prediv);
- __set_TCTR(TCTR_SC_CTR0 | TCTR_RL_RW_LH8 | TCTR_MODE_2);
- __set_TCSR_DATA(0, base & 0xff);
- __set_TCSR_DATA(0, base >> 8);
-}
-
-
-void read_persistent_clock(struct timespec *ts)
-{
- unsigned int year, mon, day, hour, min, sec;
-
- extern void arch_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec);
-
- /* FIX by dqg : Set to zero for platforms that don't have tod */
- /* without this time is undefined and can overflow time_t, causing */
- /* very strange errors */
- year = 1980;
- mon = day = 1;
- hour = min = sec = 0;
- arch_gettod (&year, &mon, &day, &hour, &min, &sec);
-
- if ((year += 1900) < 1970)
- year += 100;
- ts->tv_sec = mktime(year, mon, day, hour, min, sec);
- ts->tv_nsec = 0;
-}
-
-void time_init(void)
-{
- /* install scheduling interrupt handler */
- setup_irq(IRQ_CPU_TIMER0, &timer_irq);
-
- time_divisor_init();
-}
-
-/*
- * Scheduler clock - returns current time in nanosec units.
- */
-unsigned long long sched_clock(void)
-{
- return jiffies_64 * (1000000000 / HZ);
-}
+++ /dev/null
-/* traps.c: high-level exception handler for FR-V
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sched/signal.h>
-#include <linux/sched/debug.h>
-#include <linux/signal.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/types.h>
-#include <linux/user.h>
-#include <linux/string.h>
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <asm/asm-offsets.h>
-#include <asm/setup.h>
-#include <asm/fpu.h>
-#include <linux/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/siginfo.h>
-#include <asm/unaligned.h>
-
-void show_backtrace(struct pt_regs *, unsigned long);
-
-extern asmlinkage void __break_hijack_kernel_event(void);
-
-/*****************************************************************************/
-/*
- * instruction access error
- */
-asmlinkage void insn_access_error(unsigned long esfr1, unsigned long epcr0, unsigned long esr0)
-{
- siginfo_t info;
-
- die_if_kernel("-- Insn Access Error --\n"
- "EPCR0 : %08lx\n"
- "ESR0 : %08lx\n",
- epcr0, esr0);
-
- info.si_signo = SIGSEGV;
- info.si_code = SEGV_ACCERR;
- info.si_errno = 0;
- info.si_addr = (void __user *) ((epcr0 & EPCR0_V) ? (epcr0 & EPCR0_PC) : __frame->pc);
-
- force_sig_info(info.si_signo, &info, current);
-} /* end insn_access_error() */
-
-/*****************************************************************************/
-/*
- * handler for:
- * - illegal instruction
- * - privileged instruction
- * - unsupported trap
- * - debug exceptions
- */
-asmlinkage void illegal_instruction(unsigned long esfr1, unsigned long epcr0, unsigned long esr0)
-{
- siginfo_t info;
-
- die_if_kernel("-- Illegal Instruction --\n"
- "EPCR0 : %08lx\n"
- "ESR0 : %08lx\n"
- "ESFR1 : %08lx\n",
- epcr0, esr0, esfr1);
-
- info.si_errno = 0;
- info.si_addr = (void __user *) ((epcr0 & EPCR0_V) ? (epcr0 & EPCR0_PC) : __frame->pc);
-
- switch (__frame->tbr & TBR_TT) {
- case TBR_TT_ILLEGAL_INSTR:
- info.si_signo = SIGILL;
- info.si_code = ILL_ILLOPC;
- break;
- case TBR_TT_PRIV_INSTR:
- info.si_signo = SIGILL;
- info.si_code = ILL_PRVOPC;
- break;
- case TBR_TT_TRAP2 ... TBR_TT_TRAP126:
- info.si_signo = SIGILL;
- info.si_code = ILL_ILLTRP;
- break;
- /* GDB uses "tira gr0, #1" as a breakpoint instruction. */
- case TBR_TT_TRAP1:
- case TBR_TT_BREAK:
- info.si_signo = SIGTRAP;
- info.si_code =
- (__frame->__status & REG__STATUS_STEPPED) ? TRAP_TRACE : TRAP_BRKPT;
- break;
- }
-
- force_sig_info(info.si_signo, &info, current);
-} /* end illegal_instruction() */
-
-/*****************************************************************************/
-/*
- * handle atomic operations with errors
- * - arguments in gr8, gr9, gr10
- * - original memory value placed in gr5
- * - replacement memory value placed in gr9
- */
-asmlinkage void atomic_operation(unsigned long esfr1, unsigned long epcr0,
- unsigned long esr0)
-{
- static DEFINE_SPINLOCK(atomic_op_lock);
- unsigned long x, y, z;
- unsigned long __user *p;
- mm_segment_t oldfs;
- siginfo_t info;
- int ret;
-
- y = 0;
- z = 0;
-
- oldfs = get_fs();
- if (!user_mode(__frame))
- set_fs(KERNEL_DS);
-
- switch (__frame->tbr & TBR_TT) {
- /* TIRA gr0,#120
- * u32 __atomic_user_cmpxchg32(u32 *ptr, u32 test, u32 new)
- */
- case TBR_TT_ATOMIC_CMPXCHG32:
- p = (unsigned long __user *) __frame->gr8;
- x = __frame->gr9;
- y = __frame->gr10;
-
- for (;;) {
- ret = get_user(z, p);
- if (ret < 0)
- goto error;
-
- if (z != x)
- goto done;
-
- spin_lock_irq(&atomic_op_lock);
-
- if (__get_user(z, p) == 0) {
- if (z != x)
- goto done2;
-
- if (__put_user(y, p) == 0)
- goto done2;
- goto error2;
- }
-
- spin_unlock_irq(&atomic_op_lock);
- }
-
- /* TIRA gr0,#121
- * u32 __atomic_kernel_xchg32(void *v, u32 new)
- */
- case TBR_TT_ATOMIC_XCHG32:
- p = (unsigned long __user *) __frame->gr8;
- y = __frame->gr9;
-
- for (;;) {
- ret = get_user(z, p);
- if (ret < 0)
- goto error;
-
- spin_lock_irq(&atomic_op_lock);
-
- if (__get_user(z, p) == 0) {
- if (__put_user(y, p) == 0)
- goto done2;
- goto error2;
- }
-
- spin_unlock_irq(&atomic_op_lock);
- }
-
- /* TIRA gr0,#122
- * ulong __atomic_kernel_XOR_return(ulong i, ulong *v)
- */
- case TBR_TT_ATOMIC_XOR:
- p = (unsigned long __user *) __frame->gr8;
- x = __frame->gr9;
-
- for (;;) {
- ret = get_user(z, p);
- if (ret < 0)
- goto error;
-
- spin_lock_irq(&atomic_op_lock);
-
- if (__get_user(z, p) == 0) {
- y = x ^ z;
- if (__put_user(y, p) == 0)
- goto done2;
- goto error2;
- }
-
- spin_unlock_irq(&atomic_op_lock);
- }
-
- /* TIRA gr0,#123
- * ulong __atomic_kernel_OR_return(ulong i, ulong *v)
- */
- case TBR_TT_ATOMIC_OR:
- p = (unsigned long __user *) __frame->gr8;
- x = __frame->gr9;
-
- for (;;) {
- ret = get_user(z, p);
- if (ret < 0)
- goto error;
-
- spin_lock_irq(&atomic_op_lock);
-
- if (__get_user(z, p) == 0) {
- y = x ^ z;
- if (__put_user(y, p) == 0)
- goto done2;
- goto error2;
- }
-
- spin_unlock_irq(&atomic_op_lock);
- }
-
- /* TIRA gr0,#124
- * ulong __atomic_kernel_AND_return(ulong i, ulong *v)
- */
- case TBR_TT_ATOMIC_AND:
- p = (unsigned long __user *) __frame->gr8;
- x = __frame->gr9;
-
- for (;;) {
- ret = get_user(z, p);
- if (ret < 0)
- goto error;
-
- spin_lock_irq(&atomic_op_lock);
-
- if (__get_user(z, p) == 0) {
- y = x & z;
- if (__put_user(y, p) == 0)
- goto done2;
- goto error2;
- }
-
- spin_unlock_irq(&atomic_op_lock);
- }
-
- /* TIRA gr0,#125
- * int __atomic_user_sub_return(atomic_t *v, int i)
- */
- case TBR_TT_ATOMIC_SUB:
- p = (unsigned long __user *) __frame->gr8;
- x = __frame->gr9;
-
- for (;;) {
- ret = get_user(z, p);
- if (ret < 0)
- goto error;
-
- spin_lock_irq(&atomic_op_lock);
-
- if (__get_user(z, p) == 0) {
- y = z - x;
- if (__put_user(y, p) == 0)
- goto done2;
- goto error2;
- }
-
- spin_unlock_irq(&atomic_op_lock);
- }
-
- /* TIRA gr0,#126
- * int __atomic_user_add_return(atomic_t *v, int i)
- */
- case TBR_TT_ATOMIC_ADD:
- p = (unsigned long __user *) __frame->gr8;
- x = __frame->gr9;
-
- for (;;) {
- ret = get_user(z, p);
- if (ret < 0)
- goto error;
-
- spin_lock_irq(&atomic_op_lock);
-
- if (__get_user(z, p) == 0) {
- y = z + x;
- if (__put_user(y, p) == 0)
- goto done2;
- goto error2;
- }
-
- spin_unlock_irq(&atomic_op_lock);
- }
-
- default:
- BUG();
- }
-
-done2:
- spin_unlock_irq(&atomic_op_lock);
-done:
- if (!user_mode(__frame))
- set_fs(oldfs);
- __frame->gr5 = z;
- __frame->gr9 = y;
- return;
-
-error2:
- spin_unlock_irq(&atomic_op_lock);
-error:
- if (!user_mode(__frame))
- set_fs(oldfs);
- __frame->pc -= 4;
-
- die_if_kernel("-- Atomic Op Error --\n");
-
- info.si_signo = SIGSEGV;
- info.si_code = SEGV_ACCERR;
- info.si_errno = 0;
- info.si_addr = (void __user *) __frame->pc;
-
- force_sig_info(info.si_signo, &info, current);
-}
-
-/*****************************************************************************/
-/*
- *
- */
-asmlinkage void media_exception(unsigned long msr0, unsigned long msr1)
-{
- siginfo_t info;
-
- die_if_kernel("-- Media Exception --\n"
- "MSR0 : %08lx\n"
- "MSR1 : %08lx\n",
- msr0, msr1);
-
- info.si_signo = SIGFPE;
- info.si_code = FPE_MDAOVF;
- info.si_errno = 0;
- info.si_addr = (void __user *) __frame->pc;
-
- force_sig_info(info.si_signo, &info, current);
-} /* end media_exception() */
-
-/*****************************************************************************/
-/*
- * instruction or data access exception
- */
-asmlinkage void memory_access_exception(unsigned long esr0,
- unsigned long ear0,
- unsigned long epcr0)
-{
- siginfo_t info;
-
-#ifdef CONFIG_MMU
- if (fixup_exception(__frame))
- return;
-#endif
-
- die_if_kernel("-- Memory Access Exception --\n"
- "ESR0 : %08lx\n"
- "EAR0 : %08lx\n"
- "EPCR0 : %08lx\n",
- esr0, ear0, epcr0);
-
- info.si_signo = SIGSEGV;
- info.si_code = SEGV_ACCERR;
- info.si_errno = 0;
- info.si_addr = NULL;
-
- if ((esr0 & (ESRx_VALID | ESR0_EAV)) == (ESRx_VALID | ESR0_EAV))
- info.si_addr = (void __user *) ear0;
-
- force_sig_info(info.si_signo, &info, current);
-
-} /* end memory_access_exception() */
-
-/*****************************************************************************/
-/*
- * data access error
- * - double-word data load from CPU control area (0xFExxxxxx)
- * - read performed on inactive or self-refreshing SDRAM
- * - error notification from slave device
- * - misaligned address
- * - access to out of bounds memory region
- * - user mode accessing privileged memory region
- * - write to R/O memory region
- */
-asmlinkage void data_access_error(unsigned long esfr1, unsigned long esr15, unsigned long ear15)
-{
- siginfo_t info;
-
- die_if_kernel("-- Data Access Error --\n"
- "ESR15 : %08lx\n"
- "EAR15 : %08lx\n",
- esr15, ear15);
-
- info.si_signo = SIGSEGV;
- info.si_code = SEGV_ACCERR;
- info.si_errno = 0;
- info.si_addr = (void __user *)
- (((esr15 & (ESRx_VALID|ESR15_EAV)) == (ESRx_VALID|ESR15_EAV)) ? ear15 : 0);
-
- force_sig_info(info.si_signo, &info, current);
-} /* end data_access_error() */
-
-/*****************************************************************************/
-/*
- * data store error - should only happen if accessing inactive or self-refreshing SDRAM
- */
-asmlinkage void data_store_error(unsigned long esfr1, unsigned long esr15)
-{
- die_if_kernel("-- Data Store Error --\n"
- "ESR15 : %08lx\n",
- esr15);
- BUG();
-} /* end data_store_error() */
-
-/*****************************************************************************/
-/*
- *
- */
-asmlinkage void division_exception(unsigned long esfr1, unsigned long esr0, unsigned long isr)
-{
- siginfo_t info;
-
- die_if_kernel("-- Division Exception --\n"
- "ESR0 : %08lx\n"
- "ISR : %08lx\n",
- esr0, isr);
-
- info.si_signo = SIGFPE;
- info.si_code = FPE_INTDIV;
- info.si_errno = 0;
- info.si_addr = (void __user *) __frame->pc;
-
- force_sig_info(info.si_signo, &info, current);
-} /* end division_exception() */
-
-/*****************************************************************************/
-/*
- *
- */
-asmlinkage void compound_exception(unsigned long esfr1,
- unsigned long esr0, unsigned long esr14, unsigned long esr15,
- unsigned long msr0, unsigned long msr1)
-{
- die_if_kernel("-- Compound Exception --\n"
- "ESR0 : %08lx\n"
- "ESR15 : %08lx\n"
- "ESR15 : %08lx\n"
- "MSR0 : %08lx\n"
- "MSR1 : %08lx\n",
- esr0, esr14, esr15, msr0, msr1);
- BUG();
-} /* end compound_exception() */
-
-void show_stack(struct task_struct *task, unsigned long *sp)
-{
-}
-
-void show_trace_task(struct task_struct *tsk)
-{
- printk("CONTEXT: stack=0x%lx frame=0x%p LR=0x%lx RET=0x%lx\n",
- tsk->thread.sp, tsk->thread.frame, tsk->thread.lr, tsk->thread.sched_lr);
-}
-
-static const char *regnames[] = {
- "PSR ", "ISR ", "CCR ", "CCCR",
- "LR ", "LCR ", "PC ", "_stt",
- "sys ", "GR8*", "GNE0", "GNE1",
- "IACH", "IACL",
- "TBR ", "SP ", "FP ", "GR3 ",
- "GR4 ", "GR5 ", "GR6 ", "GR7 ",
- "GR8 ", "GR9 ", "GR10", "GR11",
- "GR12", "GR13", "GR14", "GR15",
- "GR16", "GR17", "GR18", "GR19",
- "GR20", "GR21", "GR22", "GR23",
- "GR24", "GR25", "GR26", "GR27",
- "EFRM", "CURR", "GR30", "BFRM"
-};
-
-void show_regs(struct pt_regs *regs)
-{
- unsigned long *reg;
- int loop;
-
- printk("\n");
- show_regs_print_info(KERN_DEFAULT);
-
- printk("Frame: @%08lx [%s]\n",
- (unsigned long) regs,
- regs->psr & PSR_S ? "kernel" : "user");
-
- reg = (unsigned long *) regs;
- for (loop = 0; loop < NR_PT_REGS; loop++) {
- printk("%s %08lx", regnames[loop + 0], reg[loop + 0]);
-
- if (loop == NR_PT_REGS - 1 || loop % 5 == 4)
- printk("\n");
- else
- printk(" | ");
- }
-}
-
-void die_if_kernel(const char *str, ...)
-{
- char buffer[256];
- va_list va;
-
- if (user_mode(__frame))
- return;
-
- va_start(va, str);
- vsnprintf(buffer, sizeof(buffer), str, va);
- va_end(va);
-
- console_verbose();
- printk("\n===================================\n");
- printk("%s\n", buffer);
- show_backtrace(__frame, 0);
-
- __break_hijack_kernel_event();
- do_exit(SIGSEGV);
-}
-
-/*****************************************************************************/
-/*
- * dump the contents of an exception frame
- */
-static void show_backtrace_regs(struct pt_regs *frame)
-{
- unsigned long *reg;
- int loop;
-
- /* print the registers for this frame */
- printk("<-- %s Frame: @%p -->\n",
- frame->psr & PSR_S ? "Kernel Mode" : "User Mode",
- frame);
-
- reg = (unsigned long *) frame;
- for (loop = 0; loop < NR_PT_REGS; loop++) {
- printk("%s %08lx", regnames[loop + 0], reg[loop + 0]);
-
- if (loop == NR_PT_REGS - 1 || loop % 5 == 4)
- printk("\n");
- else
- printk(" | ");
- }
-
- printk("--------\n");
-} /* end show_backtrace_regs() */
-
-/*****************************************************************************/
-/*
- * generate a backtrace of the kernel stack
- */
-void show_backtrace(struct pt_regs *frame, unsigned long sp)
-{
- struct pt_regs *frame0;
- unsigned long tos = 0, stop = 0, base;
- int format;
-
- base = ((((unsigned long) frame) + 8191) & ~8191) - sizeof(struct user_context);
- frame0 = (struct pt_regs *) base;
-
- if (sp) {
- tos = sp;
- stop = (unsigned long) frame;
- }
-
- printk("\nProcess %s (pid: %d)\n\n", current->comm, current->pid);
-
- for (;;) {
- /* dump stack segment between frames */
- //printk("%08lx -> %08lx\n", tos, stop);
- format = 0;
- while (tos < stop) {
- if (format == 0)
- printk(" %04lx :", tos & 0xffff);
-
- printk(" %08lx", *(unsigned long *) tos);
-
- tos += 4;
- format++;
- if (format == 8) {
- printk("\n");
- format = 0;
- }
- }
-
- if (format > 0)
- printk("\n");
-
- /* dump frame 0 outside of the loop */
- if (frame == frame0)
- break;
-
- tos = frame->sp;
- if (((unsigned long) frame) + sizeof(*frame) != tos) {
- printk("-- TOS %08lx does not follow frame %p --\n",
- tos, frame);
- break;
- }
-
- show_backtrace_regs(frame);
-
- /* dump the stack between this frame and the next */
- stop = (unsigned long) frame->next_frame;
- if (stop != base &&
- (stop < tos ||
- stop > base ||
- (stop < base && stop + sizeof(*frame) > base) ||
- stop & 3)) {
- printk("-- next_frame %08lx is invalid (range %08lx-%08lx) --\n",
- stop, tos, base);
- break;
- }
-
- /* move to next frame */
- frame = frame->next_frame;
- }
-
- /* we can always dump frame 0, even if the rest of the stack is corrupt */
- show_backtrace_regs(frame0);
-
-} /* end show_backtrace() */
-
-/*****************************************************************************/
-/*
- * initialise traps
- */
-void __init trap_init (void)
-{
-} /* end trap_init() */
+++ /dev/null
-/* uaccess.c: userspace access functions
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/uaccess.h>
-
-/*****************************************************************************/
-/*
- * copy a null terminated string from userspace
- */
-long strncpy_from_user(char *dst, const char __user *src, long count)
-{
- unsigned long max;
- char *p, ch;
- long err = -EFAULT;
-
- BUG_ON(count < 0);
-
- p = dst;
-
-#ifndef CONFIG_MMU
- if ((unsigned long) src < memory_start)
- goto error;
-#endif
-
- if ((unsigned long) src >= get_addr_limit())
- goto error;
-
- max = get_addr_limit() - (unsigned long) src;
- if ((unsigned long) count > max) {
- memset(dst + max, 0, count - max);
- count = max;
- }
-
- err = 0;
- for (; count > 0; count--, p++, src++) {
- __get_user_asm(err, ch, src, "ub", "=r");
- if (err < 0)
- goto error;
- if (!ch)
- break;
- *p = ch;
- }
-
- err = p - dst; /* return length excluding NUL */
-
- error:
- if (count > 0)
- memset(p, 0, count); /* clear remainder of buffer [security] */
-
- return err;
-
-} /* end strncpy_from_user() */
-
-EXPORT_SYMBOL(strncpy_from_user);
-
-/*****************************************************************************/
-/*
- * Return the size of a string (including the ending 0)
- *
- * Return 0 on exception, a value greater than N if too long
- */
-long strnlen_user(const char __user *src, long count)
-{
- const char __user *p;
- long err = 0;
- char ch;
-
- BUG_ON(count < 0);
-
-#ifndef CONFIG_MMU
- if ((unsigned long) src < memory_start)
- return 0;
-#endif
-
- if ((unsigned long) src >= get_addr_limit())
- return 0;
-
- for (p = src; count > 0; count--, p++) {
- __get_user_asm(err, ch, p, "ub", "=r");
- if (err < 0)
- return 0;
- if (!ch)
- break;
- }
-
- return p - src + 1; /* return length including NUL */
-
-} /* end strnlen_user() */
-
-EXPORT_SYMBOL(strnlen_user);
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/* ld script to make FRV Linux kernel
- * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
- */
-OUTPUT_FORMAT("elf32-frv", "elf32-frv", "elf32-frv")
-OUTPUT_ARCH(frv)
-ENTRY(_start)
-
-#include <asm-generic/vmlinux.lds.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/cache.h>
-#include <asm/thread_info.h>
-
-jiffies = jiffies_64 + 4;
-
-__page_offset = CONFIG_PAGE_OFFSET; /* start of area covered by struct pages */
-__kernel_image_start = __page_offset; /* address at which kernel image resides */
-
-SECTIONS
-{
- . = __kernel_image_start;
-
- /* discardable initialisation code and data */
- . = ALIGN(PAGE_SIZE); /* Init code and data */
- __init_begin = .;
-
- _sinittext = .;
- .init.text : {
- HEAD_TEXT
-#ifndef CONFIG_DEBUG_INFO
- INIT_TEXT
- EXIT_TEXT
- EXIT_DATA
- *(.exitcall.exit)
-#endif
- }
- _einittext = .;
-
- INIT_DATA_SECTION(8)
- PERCPU_SECTION(L1_CACHE_BYTES)
-
- . = ALIGN(PAGE_SIZE);
- __init_end = .;
-
- .trap : {
- /* trap table management - read entry-table.S before modifying */
- . = ALIGN(8192);
- __trap_tables = .;
- *(.trap.user)
- *(.trap.kernel)
- . = ALIGN(4096);
- *(.trap.break)
- }
-
- /* Text and read-only data */
- . = ALIGN(4);
- _text = .;
- _stext = .;
- .text : {
- *(.text..start)
- *(.text..entry)
- *(.text..break)
- *(.text..tlbmiss)
- TEXT_TEXT
- SCHED_TEXT
- CPUIDLE_TEXT
- LOCK_TEXT
-#ifdef CONFIG_DEBUG_INFO
- INIT_TEXT
- EXIT_TEXT
- *(.exitcall.exit)
-#endif
- *(.fixup)
- *(.gnu.warning)
- *(.exitcall.exit)
- } = 0x9090
-
- _etext = .; /* End of text section */
-
- RODATA
-
- .rodata : {
- *(.trap.vector)
-
- /* this clause must not be modified - the ordering and adjacency are imperative */
- __trap_fixup_tables = .;
- *(.trap.fixup.user .trap.fixup.kernel)
-
- }
-
- EXCEPTION_TABLE(8)
-
- _sdata = .;
- .data : { /* Data */
- INIT_TASK_DATA(THREAD_SIZE)
- CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES)
- DATA_DATA
- *(.data.*)
- EXIT_DATA
- CONSTRUCTORS
- }
-
- _edata = .; /* End of data section */
-
- BUG_TABLE
-
- /* GP section */
- . = ALIGN(L1_CACHE_BYTES);
- _gp = . + 2048;
- PROVIDE (gp = _gp);
-
- .sdata : { *(.sdata .sdata.*) }
-
- /* BSS */
- . = ALIGN(L1_CACHE_BYTES);
- __bss_start = .;
-
- .sbss : { *(.sbss .sbss.*) }
- .bss : { *(.bss .bss.*) }
- .bss..stack : { *(.bss) }
-
- __bss_stop = .;
- _end = . ;
- . = ALIGN(PAGE_SIZE);
- __kernel_image_end = .;
-
- STABS_DEBUG
- DWARF_DEBUG
-
- .comment 0 : { *(.comment) }
-
- DISCARDS
-}
-
-__kernel_image_size_no_bss = __bss_start - __kernel_image_start;
+++ /dev/null
-#
-# Makefile for FRV-specific library files..
-#
-
-lib-y := \
- __ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \
- checksum.o memcpy.o memset.o atomic-ops.o atomic64-ops.o \
- outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o atomic-lib.o
+++ /dev/null
-/* __ashldi3.S: 64-bit arithmetic shift left
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# unsigned long long __ashldi3(unsigned long long value [GR8:GR9], unsigned by [GR10])
-#
-###############################################################################
- .globl __ashldi3
- .type __ashldi3,@function
-__ashldi3:
- andicc.p gr10,#63,gr10,icc0
- setlos #32,gr5
- andicc.p gr10,#32,gr0,icc1
- beqlr icc0,#0
- ckeq icc1,cc4 ; cc4 is true if 0<N<32
-
- # deal with a shift in the range 1<=N<=31
- csll.p gr8,gr10,gr8 ,cc4,#1 ; MSW <<= N
- csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N
- csrl.p gr9,gr5,gr4 ,cc4,#1
- csll gr9,gr10,gr9 ,cc4,#1 ; LSW <<= N
- cor.p gr4,gr8,gr8 ,cc4,#1 ; MSW |= LSW >> M
-
- # deal with a shift in the range 32<=N<=63
- csll gr9,gr10,gr8 ,cc4,#0 ; MSW = LSW << (N & 31 [implicit AND])
- cor.p gr0,gr0,gr9 ,cc4,#0 ; LSW = 0
- bralr
- .size __ashldi3, .-__ashldi3
+++ /dev/null
-/* __ashrdi3.S: 64-bit arithmetic shift right
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# signed long long __ashrdi3(signed long long value [GR8:GR9], unsigned by [GR10])
-#
-###############################################################################
- .globl __ashrdi3
- .type __ashrdi3,@function
-__ashrdi3:
- andicc.p gr10,#63,gr10,icc0
- setlos #32,gr5
- andicc.p gr10,#32,gr0,icc1
- beqlr icc0,#0
- setlos.p #31,gr6
- ckeq icc1,cc4 ; cc4 is true if 0<N<32
-
- # deal with a shift in the range 1<=N<=31
- csrl.p gr9,gr10,gr9 ,cc4,#1 ; LSW >>= N
- csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N
- csll.p gr8,gr5,gr4 ,cc4,#1
- csra gr8,gr10,gr8 ,cc4,#1 ; MSW >>= N
- cor.p gr4,gr9,gr9 ,cc4,#1 ; LSW |= MSW << M
-
- # deal with a shift in the range 32<=N<=63
- csra gr8,gr10,gr9 ,cc4,#0 ; LSW = MSW >> (N & 31 [implicit AND])
- csra.p gr8,gr6,gr8 ,cc4,#0 ; MSW >>= 31
- bralr
- .size __ashrdi3, .-__ashrdi3
+++ /dev/null
-/* __lshrdi3.S: 64-bit logical shift right
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# unsigned long long __lshrdi3(unsigned long long value [GR8:GR9], unsigned by [GR10])
-#
-###############################################################################
- .globl __lshrdi3
- .type __lshrdi3,@function
-__lshrdi3:
- andicc.p gr10,#63,gr10,icc0
- setlos #32,gr5
- andicc.p gr10,#32,gr0,icc1
- beqlr icc0,#0
- ckeq icc1,cc4 ; cc4 is true if 0<N<32
-
- # deal with a shift in the range 1<=N<=31
- csrl.p gr9,gr10,gr9 ,cc4,#1 ; LSW >>= N
- csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N
- csll.p gr8,gr5,gr4 ,cc4,#1
- csrl gr8,gr10,gr8 ,cc4,#1 ; MSW >>= N
- cor.p gr4,gr9,gr9 ,cc4,#1 ; LSW |= MSW << M
-
- # deal with a shift in the range 32<=N<=63
- csrl gr8,gr10,gr9 ,cc4,#0 ; LSW = MSW >> (N & 31 [implicit AND])
- cor.p gr0,gr0,gr8 ,cc4,#0 ; MSW = 0
- bralr
- .size __lshrdi3, .-__lshrdi3
+++ /dev/null
-/* __muldi3.S: 64-bit multiply
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# unsigned long long __muldi3(unsigned long long x [GR8:GR9],
-# unsigned long long y [GR10:GR11])
-#
-###############################################################################
- .globl __muldi3, __mulll, __umulll
- .type __muldi3,@function
-__muldi3:
-__mulll:
-__umulll:
- umul gr8,gr11,gr4 ; GR4:GR5 = x.MSW * y.LSW
- umul gr9,gr10,gr6 ; GR6:GR7 = x.LSW * y.MSW
- umul.p gr9,gr11,gr8 ; GR8:GR9 = x.LSW * y.LSW
- add gr5,gr7,gr5
- add.p gr8,gr5,gr8 ; GR8 += GR5 + GR7
- bralr
- .size __muldi3, .-__muldi3
+++ /dev/null
-/* __negdi2.S: 64-bit negate
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# unsigned long long __negdi2(unsigned long long value [GR8:GR9])
-#
-###############################################################################
- .globl __negdi2
- .type __negdi2,@function
-__negdi2:
- subcc gr0,gr9,gr9,icc0
- subx gr0,gr8,gr8,icc0
- bralr
- .size __negdi2, .-__negdi2
-
+++ /dev/null
-/* __ucmpdi2.S: 64-bit unsigned compare
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# int __ucmpdi2(unsigned long long a [GR8:GR9],
-# unsigned long long b [GR10:GR11])
-#
-# - returns 0, 1, or 2 as a <, =, > b respectively.
-#
-###############################################################################
- .globl __ucmpdi2
- .type __ucmpdi2,@function
-__ucmpdi2:
- or.p gr8,gr0,gr4
- subcc gr8,gr10,gr0,icc0
- setlos.p #0,gr8
- bclr icc0,#2 ; a.msw < b.msw
-
- setlos.p #2,gr8
- bhilr icc0,#0 ; a.msw > b.msw
-
- subcc.p gr9,gr11,gr0,icc1
- setlos #0,gr8
- setlos.p #2,gr9
- setlos #1,gr7
- cknc icc1,cc6
- cor.p gr9,gr0,gr8, cc6,#1
- cckls icc1,cc4, cc6,#1
- andcr cc6,cc4,cc4
- cor gr7,gr0,gr8, cc4,#1
- bralr
- .size __ucmpdi2, .-__ucmpdi2
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/export.h>
-#include <asm/atomic.h>
-
-#define __ATOMIC_LIB__
-
-#include <asm/atomic_defs.h>
+++ /dev/null
-/* atomic-ops.S: kernel atomic operations
- *
- * For an explanation of how atomic ops work in this arch, see:
- * Documentation/frv/atomic-ops.txt
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <asm/spr-regs.h>
-
- .text
- .balign 4
-
-###############################################################################
-#
-# uint32_t __xchg_32(uint32_t i, uint32_t *v)
-#
-###############################################################################
- .globl __xchg_32
- .type __xchg_32,@function
-__xchg_32:
- or.p gr8,gr8,gr10
-0:
- orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
- ckeq icc3,cc7
- ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */
- orcr cc7,cc7,cc3 /* set CC3 to true */
- cst.p gr10,@(gr9,gr0) ,cc3,#1
- corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
- beq icc3,#0,0b
- bralr
-
- .size __xchg_32, .-__xchg_32
-
-###############################################################################
-#
-# uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new)
-#
-###############################################################################
- .globl __cmpxchg_32
- .type __cmpxchg_32,@function
-__cmpxchg_32:
- or.p gr8,gr8,gr11
-0:
- orcc gr0,gr0,gr0,icc3
- ckeq icc3,cc7
- ld.p @(gr11,gr0),gr8
- orcr cc7,cc7,cc3
- subcc gr8,gr9,gr7,icc0
- bnelr icc0,#0
- cst.p gr10,@(gr11,gr0) ,cc3,#1
- corcc gr29,gr29,gr0 ,cc3,#1
- beq icc3,#0,0b
- bralr
-
- .size __cmpxchg_32, .-__cmpxchg_32
+++ /dev/null
-/* kernel atomic64 operations
- *
- * For an explanation of how atomic ops work in this arch, see:
- * Documentation/frv/atomic-ops.txt
- *
- * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <asm/spr-regs.h>
-
- .text
- .balign 4
-
-
-###############################################################################
-#
-# uint64_t __xchg_64(uint64_t i, uint64_t *v)
-#
-###############################################################################
- .globl __xchg_64
- .type __xchg_64,@function
-__xchg_64:
- or.p gr8,gr8,gr4
- or gr9,gr9,gr5
-0:
- orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
- ckeq icc3,cc7
- ldd.p @(gr10,gr0),gr8 /* LDD.P/ORCR must be atomic */
- orcr cc7,cc7,cc3 /* set CC3 to true */
- cstd.p gr4,@(gr10,gr0) ,cc3,#1
- corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
- beq icc3,#0,0b
- bralr
-
- .size __xchg_64, .-__xchg_64
-
-###############################################################################
-#
-# uint64_t __cmpxchg_64(uint64_t test, uint64_t new, uint64_t *v)
-#
-###############################################################################
- .globl __cmpxchg_64
- .type __cmpxchg_64,@function
-__cmpxchg_64:
- or.p gr8,gr8,gr4
- or gr9,gr9,gr5
-0:
- orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */
- ckeq icc3,cc7
- ldd.p @(gr12,gr0),gr8 /* LDD.P/ORCR must be atomic */
- orcr cc7,cc7,cc3
- subcc gr8,gr4,gr0,icc0
- subcc.p gr9,gr5,gr0,icc1
- bnelr icc0,#0
- bnelr icc1,#0
- cstd.p gr10,@(gr12,gr0) ,cc3,#1
- corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */
- beq icc3,#0,0b
- bralr
-
- .size __cmpxchg_64, .-__cmpxchg_64
-
+++ /dev/null
-/* cache.S: cache management routines
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <asm/spr-regs.h>
-#include <asm/cache.h>
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# Write back a range of dcache
-# - void frv_dcache_writeback(unsigned long start [GR8], unsigned long size [GR9])
-#
-###############################################################################
- .globl frv_dcache_writeback
- .type frv_dcache_writeback,@function
-frv_dcache_writeback:
- andi gr8,~(L1_CACHE_BYTES-1),gr8
-
-2: dcf @(gr8,gr0)
- addi gr8,#L1_CACHE_BYTES,gr8
- cmp gr9,gr8,icc0
- bhi icc0,#2,2b
-
- membar
- bralr
- .size frv_dcache_writeback, .-frv_dcache_writeback
-
-##############################################################################
-#
-# Invalidate a range of dcache and icache
-# - void frv_cache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);
-#
-###############################################################################
- .globl frv_cache_invalidate
- .type frv_cache_invalidate,@function
-frv_cache_invalidate:
- andi gr8,~(L1_CACHE_BYTES-1),gr8
-
-2: dci @(gr8,gr0)
- ici @(gr8,gr0)
- addi gr8,#L1_CACHE_BYTES,gr8
- cmp gr9,gr8,icc0
- bhi icc0,#2,2b
-
- membar
- bralr
- .size frv_cache_invalidate, .-frv_cache_invalidate
-
-##############################################################################
-#
-# Invalidate a range of icache
-# - void frv_icache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);
-#
-###############################################################################
- .globl frv_icache_invalidate
- .type frv_icache_invalidate,@function
-frv_icache_invalidate:
- andi gr8,~(L1_CACHE_BYTES-1),gr8
-
-2: ici @(gr8,gr0)
- addi gr8,#L1_CACHE_BYTES,gr8
- cmp gr9,gr8,icc0
- bhi icc0,#2,2b
-
- membar
- bralr
- .size frv_icache_invalidate, .-frv_icache_invalidate
-
-###############################################################################
-#
-# Write back and invalidate a range of dcache and icache
-# - void frv_cache_wback_inv(unsigned long start [GR8], unsigned long end [GR9])
-#
-###############################################################################
- .globl frv_cache_wback_inv
- .type frv_cache_wback_inv,@function
-frv_cache_wback_inv:
- andi gr8,~(L1_CACHE_BYTES-1),gr8
-
-2: dcf @(gr8,gr0)
- ici @(gr8,gr0)
- addi gr8,#L1_CACHE_BYTES,gr8
- cmp gr9,gr8,icc0
- bhi icc0,#2,2b
-
- membar
- bralr
- .size frv_cache_wback_inv, .-frv_cache_wback_inv
+++ /dev/null
-/*
- * INET An implementation of the TCP/IP protocol suite for the LINUX
- * operating system. INET is implemented using the BSD Socket
- * interface as the means of communication with the user level.
- *
- * IP/TCP/UDP checksumming routines
- *
- * Authors: Jorge Cwik, <jorge@laser.satlink.net>
- * Arnt Gulbrandsen, <agulbra@nvg.unit.no>
- * Tom May, <ftom@netcom.com>
- * Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>
- * Lots of code moved from tcp.c and ip.c; see those files
- * for more names.
- *
- * 03/02/96 Jes Sorensen, Andreas Schwab, Roman Hodek:
- * Fixed some nasty bugs, causing some horrible crashes.
- * A: At some points, the sum (%0) was used as
- * length-counter instead of the length counter
- * (%1). Thanks to Roman Hodek for pointing this out.
- * B: GCC seems to mess up if one uses too many
- * data-registers to hold input values and one tries to
- * specify d0 and d1 as scratch registers. Letting gcc choose these
- * registers itself solves the problem.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-/* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access kills, so most
- of the assembly has to go. */
-
-#include <net/checksum.h>
-#include <linux/module.h>
-
-static inline unsigned short from32to16(unsigned long x)
-{
- /* add up 16-bit and 16-bit for 16+c bit */
- x = (x & 0xffff) + (x >> 16);
- /* add up carry.. */
- x = (x & 0xffff) + (x >> 16);
- return x;
-}
-
-static unsigned long do_csum(const unsigned char * buff, int len)
-{
- int odd, count;
- unsigned long result = 0;
-
- if (len <= 0)
- goto out;
- odd = 1 & (unsigned long) buff;
- if (odd) {
- result = *buff;
- len--;
- buff++;
- }
- count = len >> 1; /* nr of 16-bit words.. */
- if (count) {
- if (2 & (unsigned long) buff) {
- result += *(unsigned short *) buff;
- count--;
- len -= 2;
- buff += 2;
- }
- count >>= 1; /* nr of 32-bit words.. */
- if (count) {
- unsigned long carry = 0;
- do {
- unsigned long w = *(unsigned long *) buff;
- count--;
- buff += 4;
- result += carry;
- result += w;
- carry = (w > result);
- } while (count);
- result += carry;
- result = (result & 0xffff) + (result >> 16);
- }
- if (len & 2) {
- result += *(unsigned short *) buff;
- buff += 2;
- }
- }
- if (len & 1)
- result += (*buff << 8);
- result = from32to16(result);
- if (odd)
- result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
-out:
- return result;
-}
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-__wsum csum_partial(const void *buff, int len, __wsum sum)
-{
- unsigned int result = do_csum(buff, len);
-
- /* add in old sum, and carry.. */
- result += (__force u32)sum;
- if ((__force u32)sum > result)
- result += 1;
- return (__force __wsum)result;
-}
-
-EXPORT_SYMBOL(csum_partial);
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-__sum16 ip_compute_csum(const void *buff, int len)
-{
- return (__force __sum16)~do_csum(buff, len);
-}
-
-EXPORT_SYMBOL(ip_compute_csum);
-
-/*
- * copy from fs while checksumming, otherwise like csum_partial
- */
-__wsum
-csum_partial_copy_from_user(const void __user *src, void *dst,
- int len, __wsum sum, int *csum_err)
-{
- int rem;
-
- if (csum_err)
- *csum_err = 0;
-
- rem = copy_from_user(dst, src, len);
- if (rem != 0) {
- if (csum_err)
- *csum_err = -EFAULT;
- memset(dst + len - rem, 0, rem);
- len = rem;
- }
-
- return csum_partial(dst, len, sum);
-}
-
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-
-/*
- * copy from ds while checksumming, otherwise like csum_partial
- */
-__wsum
-csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
-{
- memcpy(dst, src, len);
- return csum_partial(dst, len, sum);
-}
-
-EXPORT_SYMBOL(csum_partial_copy_nocheck);
+++ /dev/null
-/* insl_ns.S: input array of 4b words from device port without byte swapping
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# void __insl_ns(unsigned int port, void *buf, int n)
-#
-###############################################################################
- .globl __insl_ns
- .type __insl_ns,@function
-__insl_ns:
- andicc.p gr9,#3,gr0,icc0
- setlos #4,gr4
- bne icc0,#0,__insl_ns_misaligned
- subi gr9,#4,gr9
-0:
- ldi.p @(gr8,#0),gr5
- subicc gr10,#1,gr10,icc0
- stu.p gr5,@(gr9,gr4)
- bhi icc0,#2,0b
- bralr
-
-__insl_ns_misaligned:
- subi.p gr9,#1,gr9
- setlos #1,gr4
-0:
- ldi @(gr8,#0),gr5
-
- srli gr5,#24,gr6
- stbu.p gr6,@(gr9,gr4)
- srli gr5,#16,gr6
- stbu.p gr6,@(gr9,gr4)
- srli gr5,#8,gr6
- stbu.p gr6,@(gr9,gr4)
- subicc gr10,#1,gr10,icc0
- stbu.p gr5,@(gr9,gr4)
- bhi icc0,#2,0b
- bralr
-
- .size __insl_ns, .-__insl_ns
+++ /dev/null
-/* insl_sw.S: input array of 4b words from device port with byte swapping
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# void __insl_sw(unsigned int port, void *buf, int n)
-#
-###############################################################################
- .globl __insl_sw
- .type __insl_sw,@function
-__insl_sw:
- subi.p gr9,#1,gr9
- setlos #1,gr4
-0:
- ldi.p @(gr8,#0),gr5 ; get 0xAABBCCDD
- subicc gr10,#1,gr10,icc0
-
- stbu.p gr5,@(gr9,gr4) ; write 0xDD
- srli gr5,#8,gr5
- stbu.p gr5,@(gr9,gr4) ; write 0xCC
- srli gr5,#8,gr5
- stbu.p gr5,@(gr9,gr4) ; write 0xBB
- srli gr5,#8,gr5
- stbu.p gr5,@(gr9,gr4) ; write 0xAA
- bhi icc0,#2,0b
- bralr
-
- .size __insl_sw, .-__insl_sw
+++ /dev/null
-/* memcpy.S: optimised assembly memcpy
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# void *memcpy(void *to, const char *from, size_t count)
-#
-# - NOTE: must not use any stack. exception detection performs function return
-# to caller's fixup routine, aborting the remainder of the copy
-#
-###############################################################################
- .globl memcpy,__memcpy_end
- .type memcpy,@function
-memcpy:
- or.p gr8,gr9,gr4
- orcc gr10,gr0,gr0,icc3
- or.p gr10,gr4,gr4
- beqlr icc3,#0
-
- # optimise based on best common alignment for to, from & count
- andicc.p gr4,#0x0f,gr0,icc0
- setlos #8,gr11
- andicc.p gr4,#0x07,gr0,icc1
- beq icc0,#0,memcpy_16
- andicc.p gr4,#0x03,gr0,icc0
- beq icc1,#0,memcpy_8
- andicc.p gr4,#0x01,gr0,icc1
- beq icc0,#0,memcpy_4
- setlos.p #1,gr11
- beq icc1,#0,memcpy_2
-
- # do byte by byte copy
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: ldubu.p @(gr9,gr11),gr4
- subicc gr10,#1,gr10,icc0
- stbu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do halfword by halfword copy
-memcpy_2:
- setlos #2,gr11
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: lduhu.p @(gr9,gr11),gr4
- subicc gr10,#2,gr10,icc0
- sthu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do word by word copy
-memcpy_4:
- setlos #4,gr11
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: ldu.p @(gr9,gr11),gr4
- subicc gr10,#4,gr10,icc0
- stu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do double-word by double-word copy
-memcpy_8:
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: lddu.p @(gr9,gr11),gr4
- subicc gr10,#8,gr10,icc0
- stdu.p gr4,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-
- # do quad-word by quad-word copy
-memcpy_16:
- sub.p gr8,gr11,gr3
- sub gr9,gr11,gr9
-0: lddu @(gr9,gr11),gr4
- lddu.p @(gr9,gr11),gr6
- subicc gr10,#16,gr10,icc0
- stdu gr4,@(gr3,gr11)
- stdu.p gr6,@(gr3,gr11)
- bne icc0,#2,0b
- bralr
-__memcpy_end:
-
- .size memcpy, __memcpy_end-memcpy
-
-###############################################################################
-#
-# copy to/from userspace
-# - return the number of bytes that could not be copied (0 on complete success)
-#
-# long __memcpy_user(void *dst, const void *src, size_t count)
-#
-###############################################################################
- .globl __memcpy_user, __memcpy_user_error_lr, __memcpy_user_error_handler
- .type __memcpy_user,@function
-__memcpy_user:
- movsg lr,gr7
- subi.p sp,#8,sp
- add gr8,gr10,gr6 ; calculate expected end address
- stdi gr6,@(sp,#0)
-
- # abuse memcpy to do the dirty work
- call memcpy
-__memcpy_user_error_lr:
- ldi.p @(sp,#4),gr7
- setlos #0,gr8
- jmpl.p @(gr7,gr0)
- addi sp,#8,sp
-
- # deal any exception generated by memcpy
- # GR8 - memcpy's current dest address
- # GR11 - memset's step value (index register for store insns)
-__memcpy_user_error_handler:
- lddi.p @(sp,#0),gr4 ; load GR4 with dst+count, GR5 with ret addr
- add gr11,gr3,gr7
- sub.p gr4,gr7,gr8
-
- addi sp,#8,sp
- jmpl @(gr5,gr0)
-
- .size __memcpy_user, .-__memcpy_user
+++ /dev/null
-/* memset.S: optimised assembly memset
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# void *memset(void *p, char ch, size_t count)
-#
-# - NOTE: must not use any stack. exception detection performs function return
-# to caller's fixup routine, aborting the remainder of the set
-# GR4, GR7, GR8, and GR11 must be managed
-#
-###############################################################################
- .globl memset,__memset_end
- .type memset,@function
-memset:
- orcc.p gr10,gr0,gr5,icc3 ; GR5 = count
- andi gr9,#0xff,gr9
- or.p gr8,gr0,gr4 ; GR4 = address
- beqlr icc3,#0
-
- # conditionally write a byte to 2b-align the address
- setlos.p #1,gr6
- andicc gr4,#1,gr0,icc0
- ckne icc0,cc7
- cstb.p gr9,@(gr4,gr0) ,cc7,#1
- csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3
- cadd.p gr4,gr6,gr4 ,cc7,#1
- beqlr icc3,#0
-
- # conditionally write a word to 4b-align the address
- andicc.p gr4,#2,gr0,icc0
- subicc gr5,#2,gr0,icc1
- setlos.p #2,gr6
- ckne icc0,cc7
- slli.p gr9,#8,gr12 ; need to double up the pattern
- cknc icc1,cc5
- or.p gr9,gr12,gr12
- andcr cc7,cc5,cc7
-
- csth.p gr12,@(gr4,gr0) ,cc7,#1
- csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3
- cadd.p gr4,gr6,gr4 ,cc7,#1
- beqlr icc3,#0
-
- # conditionally write a dword to 8b-align the address
- andicc.p gr4,#4,gr0,icc0
- subicc gr5,#4,gr0,icc1
- setlos.p #4,gr6
- ckne icc0,cc7
- slli.p gr12,#16,gr13 ; need to quadruple-up the pattern
- cknc icc1,cc5
- or.p gr13,gr12,gr12
- andcr cc7,cc5,cc7
-
- cst.p gr12,@(gr4,gr0) ,cc7,#1
- csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3
- cadd.p gr4,gr6,gr4 ,cc7,#1
- beqlr icc3,#0
-
- or.p gr12,gr12,gr13 ; need to octuple-up the pattern
-
- # the address is now 8b-aligned - loop around writing 64b chunks
- setlos #8,gr7
- subi.p gr4,#8,gr4 ; store with update index does weird stuff
- setlos #64,gr6
-
- subicc gr5,#64,gr0,icc0
-0: cknc icc0,cc7
- cstdu gr12,@(gr4,gr7) ,cc7,#1
- cstdu gr12,@(gr4,gr7) ,cc7,#1
- cstdu gr12,@(gr4,gr7) ,cc7,#1
- cstdu gr12,@(gr4,gr7) ,cc7,#1
- cstdu gr12,@(gr4,gr7) ,cc7,#1
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- subicc gr5,#64,gr0,icc0
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- beqlr icc3,#0
- bnc icc0,#2,0b
-
- # now do 32-byte remnant
- subicc.p gr5,#32,gr0,icc0
- setlos #32,gr6
- cknc icc0,cc7
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- setlos #16,gr6
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- subicc gr5,#16,gr0,icc0
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- beqlr icc3,#0
-
- # now do 16-byte remnant
- cknc icc0,cc7
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- csubcc gr5,gr6,gr5 ,cc7,#1 ; also set ICC3
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- beqlr icc3,#0
-
- # now do 8-byte remnant
- subicc gr5,#8,gr0,icc1
- cknc icc1,cc7
- cstdu.p gr12,@(gr4,gr7) ,cc7,#1
- csubcc gr5,gr7,gr5 ,cc7,#1 ; also set ICC3
- setlos.p #4,gr7
- beqlr icc3,#0
-
- # now do 4-byte remnant
- subicc gr5,#4,gr0,icc0
- addi.p gr4,#4,gr4
- cknc icc0,cc7
- cstu.p gr12,@(gr4,gr7) ,cc7,#1
- csubcc gr5,gr7,gr5 ,cc7,#1 ; also set ICC3
- subicc.p gr5,#2,gr0,icc1
- beqlr icc3,#0
-
- # now do 2-byte remnant
- setlos #2,gr7
- addi.p gr4,#2,gr4
- cknc icc1,cc7
- csthu.p gr12,@(gr4,gr7) ,cc7,#1
- csubcc gr5,gr7,gr5 ,cc7,#1 ; also set ICC3
- subicc.p gr5,#1,gr0,icc0
- beqlr icc3,#0
-
- # now do 1-byte remnant
- setlos #0,gr7
- addi.p gr4,#2,gr4
- cknc icc0,cc7
- cstb.p gr12,@(gr4,gr0) ,cc7,#1
- bralr
-__memset_end:
-
- .size memset, __memset_end-memset
-
-###############################################################################
-#
-# clear memory in userspace
-# - return the number of bytes that could not be cleared (0 on complete success)
-#
-# long __memset_user(void *p, size_t count)
-#
-###############################################################################
- .globl __memset_user, __memset_user_error_lr, __memset_user_error_handler
- .type __memset_user,@function
-__memset_user:
- movsg lr,gr11
-
- # abuse memset to do the dirty work
- or.p gr9,gr9,gr10
- setlos #0,gr9
- call memset
-__memset_user_error_lr:
- jmpl.p @(gr11,gr0)
- setlos #0,gr8
-
- # deal any exception generated by memset
- # GR4 - memset's address tracking pointer
- # GR7 - memset's step value (index register for store insns)
- # GR8 - memset's original start address
- # GR10 - memset's original count
-__memset_user_error_handler:
- add.p gr4,gr7,gr4
- add gr8,gr10,gr8
- jmpl.p @(gr11,gr0)
- sub gr8,gr4,gr8 ; we return the amount left uncleared
-
- .size __memset_user, .-__memset_user
+++ /dev/null
-/* outsl_ns.S: output array of 4b words to device without byte swapping
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# void __outsl_ns(unsigned int port, const void *buf, int n)
-#
-###############################################################################
- .globl __outsl_ns
- .type __outsl_ns,@function
-__outsl_ns:
- andicc.p gr9,#3,gr0,icc0
- setlos #4,gr4
- bne icc0,#0,__outsl_ns_misaligned
- subi gr9,#4,gr9
-0:
- ldu.p @(gr9,gr4),gr5
- subicc gr10,#1,gr10,icc0
- sti.p gr5,@(gr8,#0)
- bhi icc0,#2,0b
-
- membar
- bralr
-
-__outsl_ns_misaligned:
- subi.p gr9,#1,gr9
- setlos #1,gr4
-0:
- ldubu @(gr9,gr4),gr5
- ldubu.p @(gr9,gr4),gr6
- slli gr5,#8,gr5
- ldubu.p @(gr9,gr4),gr7
- or gr5,gr6,gr5
- ldubu.p @(gr9,gr4),gr6
- slli gr5,#16,gr5
- slli.p gr7,#8,gr7
- or gr5,gr6,gr5
- subicc.p gr10,#1,gr10,icc0
- or gr5,gr7,gr5
-
- sti.p gr5,@(gr8,#0)
- bhi icc0,#2,0b
-
- membar
- bralr
-
- .size __outsl_ns, .-__outsl_ns
+++ /dev/null
-/* outsl_ns.S: output array of 4b words to device with byte swapping
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-
- .text
- .p2align 4
-
-###############################################################################
-#
-# void __outsl_sw(unsigned int port, const void *buf, int n)
-#
-###############################################################################
- .globl __outsl_sw
- .type __outsl_sw,@function
-__outsl_sw:
- subi.p gr9,#1,gr9
- setlos #1,gr4
-0:
- ldubu @(gr9,gr4),gr5
- ldubu @(gr9,gr4),gr6
- slli gr6,#8,gr6
- ldubu.p @(gr9,gr4),gr7
- or gr5,gr6,gr5
- ldubu.p @(gr9,gr4),gr6
- slli gr7,#16,gr7
- slli.p gr6,#24,gr6
- or gr5,gr7,gr5
- subicc.p gr10,#1,gr10,icc0
- or gr5,gr6,gr5
-
- sti.p gr5,@(gr8,#0)
- bhi icc0,#2,0b
-
- membar
- bralr
-
- .size __outsl_sw, .-__outsl_sw
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the MB93090-MB00 motherboard stuff
-#
-
-ifeq "$(CONFIG_PCI)" "y"
-obj-y := pci-frv.o pci-irq.o pci-vdk.o
-
-ifeq "$(CONFIG_MMU)" "y"
-obj-y += pci-dma.o
-else
-obj-y += pci-dma-nommu.o
-endif
-endif
-
-obj-$(CONFIG_MTD) += flash.o
+++ /dev/null
-/* Flash mappings for the MB93090-MB00 motherboard
- *
- * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/physmap.h>
-
-#define MB93090_BOOTROM_ADDR 0xFF000000 /* Boot ROM */
-#define MB93090_BOOTROM_SIZE (2 * 1024 * 1024)
-#define MB93090_USERROM_ADDR 0xFF200000 /* User ROM */
-#define MB93090_USERROM_SIZE (2 * 1024 * 1024)
-
-/*
- * default MTD partition table for both main flash devices, expected to be
- * overridden by RedBoot
- */
-static struct mtd_partition mb93090_partitions[] = {
- {
- .name = "Filesystem",
- .size = MTDPART_SIZ_FULL,
- .offset = 0,
- }
-};
-
-/*
- * Definition of the MB93090 Boot ROM (on the CPU card)
- */
-static struct physmap_flash_data mb93090_bootrom_data = {
- .width = 2,
- .nr_parts = 2,
- .parts = mb93090_partitions,
-};
-
-static struct resource mb93090_bootrom_resource = {
- .start = MB93090_BOOTROM_ADDR,
- .end = MB93090_BOOTROM_ADDR + MB93090_BOOTROM_SIZE - 1,
- .flags = IORESOURCE_MEM,
-};
-
-static struct platform_device mb93090_bootrom = {
- .name = "physmap-flash",
- .id = 0,
- .dev.platform_data = &mb93090_bootrom_data,
- .num_resources = 1,
- .resource = &mb93090_bootrom_resource,
-};
-
-/*
- * Definition of the MB93090 User ROM definition (on the motherboard)
- */
-static struct physmap_flash_data mb93090_userrom_data = {
- .width = 2,
- .nr_parts = 2,
- .parts = mb93090_partitions,
-};
-
-static struct resource mb93090_userrom_resource = {
- .start = MB93090_USERROM_ADDR,
- .end = MB93090_USERROM_ADDR + MB93090_USERROM_SIZE - 1,
- .flags = IORESOURCE_MEM,
-};
-
-static struct platform_device mb93090_userrom = {
- .name = "physmap-flash",
- .id = 1,
- .dev.platform_data = &mb93090_userrom_data,
- .num_resources = 1,
- .resource = &mb93090_userrom_resource,
-};
-
-/*
- * register the MB93090 flashes
- */
-static int __init mb93090_mtd_init(void)
-{
- platform_device_register(&mb93090_bootrom);
- platform_device_register(&mb93090_userrom);
- return 0;
-}
-
-module_init(mb93090_mtd_init);
+++ /dev/null
-/* pci-dma-nommu.c: Dynamic DMA mapping support for the FRV
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Woodhouse (dwmw2@infradead.org)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/dma-mapping.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <asm/io.h>
-
-#if 1
-#define DMA_SRAM_START dma_coherent_mem_start
-#define DMA_SRAM_END dma_coherent_mem_end
-#else // Use video RAM on Matrox
-#define DMA_SRAM_START 0xe8900000
-#define DMA_SRAM_END 0xe8a00000
-#endif
-
-struct dma_alloc_record {
- struct list_head list;
- unsigned long ofs;
- unsigned long len;
-};
-
-static DEFINE_SPINLOCK(dma_alloc_lock);
-static LIST_HEAD(dma_alloc_list);
-
-static void *frv_dma_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle,
- gfp_t gfp, unsigned long attrs)
-{
- struct dma_alloc_record *new;
- struct list_head *this = &dma_alloc_list;
- unsigned long flags;
- unsigned long start = DMA_SRAM_START;
- unsigned long end;
-
- if (!DMA_SRAM_START) {
- printk("%s called without any DMA area reserved!\n", __func__);
- return NULL;
- }
-
- new = kmalloc(sizeof (*new), GFP_ATOMIC);
- if (!new)
- return NULL;
-
- /* Round up to a reasonable alignment */
- new->len = (size + 31) & ~31;
-
- spin_lock_irqsave(&dma_alloc_lock, flags);
-
- list_for_each (this, &dma_alloc_list) {
- struct dma_alloc_record *this_r = list_entry(this, struct dma_alloc_record, list);
- end = this_r->ofs;
-
- if (end - start >= size)
- goto gotone;
-
- start = this_r->ofs + this_r->len;
- }
- /* Reached end of list. */
- end = DMA_SRAM_END;
- this = &dma_alloc_list;
-
- if (end - start >= size) {
- gotone:
- new->ofs = start;
- list_add_tail(&new->list, this);
- spin_unlock_irqrestore(&dma_alloc_lock, flags);
-
- *dma_handle = start;
- return (void *)start;
- }
-
- kfree(new);
- spin_unlock_irqrestore(&dma_alloc_lock, flags);
- return NULL;
-}
-
-static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr,
- dma_addr_t dma_handle, unsigned long attrs)
-{
- struct dma_alloc_record *rec;
- unsigned long flags;
-
- spin_lock_irqsave(&dma_alloc_lock, flags);
-
- list_for_each_entry(rec, &dma_alloc_list, list) {
- if (rec->ofs == dma_handle) {
- list_del(&rec->list);
- kfree(rec);
- spin_unlock_irqrestore(&dma_alloc_lock, flags);
- return;
- }
- }
- spin_unlock_irqrestore(&dma_alloc_lock, flags);
- BUG();
-}
-
-static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction direction,
- unsigned long attrs)
-{
- struct scatterlist *sg;
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
- return nents;
-
- for_each_sg(sglist, sg, nents, i) {
- frv_cache_wback_inv(sg_dma_address(sg),
- sg_dma_address(sg) + sg_dma_len(sg));
- }
-
- return nents;
-}
-
-static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction, unsigned long attrs)
-{
- BUG_ON(direction == DMA_NONE);
-
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- flush_dcache_page(page);
-
- return (dma_addr_t) page_to_phys(page) + offset;
-}
-
-static void frv_dma_sync_single_for_device(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-static void frv_dma_sync_sg_for_device(struct device *dev,
- struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-
-static int frv_dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if (mask < 0x00ffffff)
- return 0;
- return 1;
-}
-
-const struct dma_map_ops frv_dma_ops = {
- .alloc = frv_dma_alloc,
- .free = frv_dma_free,
- .map_page = frv_dma_map_page,
- .map_sg = frv_dma_map_sg,
- .sync_single_for_device = frv_dma_sync_single_for_device,
- .sync_sg_for_device = frv_dma_sync_sg_for_device,
- .dma_supported = frv_dma_supported,
-};
-EXPORT_SYMBOL(frv_dma_ops);
+++ /dev/null
-/* pci-dma.c: Dynamic DMA mapping support for the FRV CPUs that have MMUs
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <linux/export.h>
-#include <linux/highmem.h>
-#include <linux/scatterlist.h>
-#include <asm/io.h>
-
-static void *frv_dma_alloc(struct device *hwdev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
-{
- void *ret;
-
- ret = consistent_alloc(gfp, size, dma_handle);
- if (ret)
- memset(ret, 0, size);
-
- return ret;
-}
-
-static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr,
- dma_addr_t dma_handle, unsigned long attrs)
-{
- consistent_free(vaddr);
-}
-
-static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction direction,
- unsigned long attrs)
-{
- struct scatterlist *sg;
- unsigned long dampr2;
- void *vaddr;
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
- return nents;
-
- dampr2 = __get_DAMPR(2);
-
- for_each_sg(sglist, sg, nents, i) {
- vaddr = kmap_atomic_primary(sg_page(sg));
-
- frv_dcache_writeback((unsigned long) vaddr,
- (unsigned long) vaddr + PAGE_SIZE);
-
- }
-
- kunmap_atomic_primary(vaddr);
- if (dampr2) {
- __set_DAMPR(2, dampr2);
- __set_IAMPR(2, dampr2);
- }
-
- return nents;
-}
-
-static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction, unsigned long attrs)
-{
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- flush_dcache_page(page);
-
- return (dma_addr_t) page_to_phys(page) + offset;
-}
-
-static void frv_dma_sync_single_for_device(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-static void frv_dma_sync_sg_for_device(struct device *dev,
- struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-
-static int frv_dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if (mask < 0x00ffffff)
- return 0;
- return 1;
-}
-
-const struct dma_map_ops frv_dma_ops = {
- .alloc = frv_dma_alloc,
- .free = frv_dma_free,
- .map_page = frv_dma_map_page,
- .map_sg = frv_dma_map_sg,
- .sync_single_for_device = frv_dma_sync_single_for_device,
- .sync_sg_for_device = frv_dma_sync_sg_for_device,
- .dma_supported = frv_dma_supported,
-};
-EXPORT_SYMBOL(frv_dma_ops);
+++ /dev/null
-/* pci-frv.c: low-level PCI access routines
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from the i386 equivalent stuff
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/errno.h>
-
-#include "pci-frv.h"
-
-/*
- * We need to avoid collisions with `mirrored' VGA ports
- * and other strange ISA hardware, so we always want the
- * addresses to be allocated in the 0x000-0x0ff region
- * modulo 0x400.
- *
- * Why? Because some silly external IO cards only decode
- * the low 10 bits of the IO address. The 0x00-0xff region
- * is reserved for motherboard devices that decode all 16
- * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
- * but we want to try to avoid allocating at 0x2900-0x2bff
- * which might have be mirrored at 0x0100-0x03ff..
- */
-resource_size_t
-pcibios_align_resource(void *data, const struct resource *res,
- resource_size_t size, resource_size_t align)
-{
- resource_size_t start = res->start;
-
- if ((res->flags & IORESOURCE_IO) && (start & 0x300))
- start = (start + 0x3ff) & ~0x3ff;
-
- return start;
-}
-
-
-/*
- * Handle resources of PCI devices. If the world were perfect, we could
- * just allocate all the resource regions and do nothing more. It isn't.
- * On the other hand, we cannot just re-allocate all devices, as it would
- * require us to know lots of host bridge internals. So we attempt to
- * keep as much of the original configuration as possible, but tweak it
- * when it's found to be wrong.
- *
- * Known BIOS problems we have to work around:
- * - I/O or memory regions not configured
- * - regions configured, but not enabled in the command register
- * - bogus I/O addresses above 64K used
- * - expansion ROMs left enabled (this may sound harmless, but given
- * the fact the PCI specs explicitly allow address decoders to be
- * shared between expansion ROMs and other resource regions, it's
- * at least dangerous)
- *
- * Our solution:
- * (1) Allocate resources for all buses behind PCI-to-PCI bridges.
- * This gives us fixed barriers on where we can allocate.
- * (2) Allocate resources for all enabled devices. If there is
- * a collision, just mark the resource as unallocated. Also
- * disable expansion ROMs during this step.
- * (3) Try to allocate resources for disabled devices. If the
- * resources were assigned correctly, everything goes well,
- * if they weren't, they won't disturb allocation of other
- * resources.
- * (4) Assign new addresses to resources which were either
- * not configured at all or misconfigured. If explicitly
- * requested by the user, configure expansion ROM address
- * as well.
- */
-
-static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
-{
- struct list_head *ln;
- struct pci_bus *bus;
- struct pci_dev *dev;
- int idx;
- struct resource *r;
-
- /* Depth-First Search on bus tree */
- for (ln=bus_list->next; ln != bus_list; ln=ln->next) {
- bus = list_entry(ln, struct pci_bus, node);
- if ((dev = bus->self)) {
- for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) {
- r = &dev->resource[idx];
- if (!r->start)
- continue;
- pci_claim_bridge_resource(dev, idx);
- }
- }
- pcibios_allocate_bus_resources(&bus->children);
- }
-}
-
-static void __init pcibios_allocate_resources(int pass)
-{
- struct pci_dev *dev = NULL;
- int idx, disabled;
- u16 command;
- struct resource *r;
-
- for_each_pci_dev(dev) {
- pci_read_config_word(dev, PCI_COMMAND, &command);
- for(idx = 0; idx < 6; idx++) {
- r = &dev->resource[idx];
- if (r->parent) /* Already allocated */
- continue;
- if (!r->start) /* Address not assigned at all */
- continue;
- if (r->flags & IORESOURCE_IO)
- disabled = !(command & PCI_COMMAND_IO);
- else
- disabled = !(command & PCI_COMMAND_MEMORY);
- if (pass == disabled) {
- DBG("PCI: Resource %08lx-%08lx (f=%lx, d=%d, p=%d)\n",
- r->start, r->end, r->flags, disabled, pass);
- if (pci_claim_resource(dev, idx) < 0) {
- /* We'll assign a new address later */
- r->end -= r->start;
- r->start = 0;
- }
- }
- }
- if (!pass) {
- r = &dev->resource[PCI_ROM_RESOURCE];
- if (r->flags & IORESOURCE_ROM_ENABLE) {
- /* Turn the ROM off, leave the resource region, but keep it unregistered. */
- u32 reg;
- DBG("PCI: Switching off ROM of %s\n", pci_name(dev));
- r->flags &= ~IORESOURCE_ROM_ENABLE;
- pci_read_config_dword(dev, dev->rom_base_reg, ®);
- pci_write_config_dword(dev, dev->rom_base_reg, reg & ~PCI_ROM_ADDRESS_ENABLE);
- }
- }
- }
-}
-
-static void __init pcibios_assign_resources(void)
-{
- struct pci_dev *dev = NULL;
- int idx, err;
- struct resource *r;
-
- for_each_pci_dev(dev) {
- int class = dev->class >> 8;
-
- /* Don't touch classless devices and host bridges */
- if (!class || class == PCI_CLASS_BRIDGE_HOST)
- continue;
-
- for(idx=0; idx<6; idx++) {
- r = &dev->resource[idx];
-
- /*
- * Don't touch IDE controllers and I/O ports of video cards!
- */
- if ((class == PCI_CLASS_STORAGE_IDE && idx < 4) ||
- (class == PCI_CLASS_DISPLAY_VGA && (r->flags & IORESOURCE_IO)))
- continue;
-
- /*
- * We shall assign a new address to this resource, either because
- * the BIOS forgot to do so or because we have decided the old
- * address was unusable for some reason.
- */
- if (!r->start && r->end) {
- err = pci_assign_resource(dev, idx);
- if (err)
- dev_err(&dev->dev,
- "Failed to assign new address to %d\n",
- idx);
- }
- }
- }
-}
-
-void __init pcibios_resource_survey(void)
-{
- DBG("PCI: Allocating resources\n");
- pcibios_allocate_bus_resources(&pci_root_buses);
- pcibios_allocate_resources(0);
- pcibios_allocate_resources(1);
- pcibios_assign_resources();
-}
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Low-Level PCI Access for FRV machines.
- *
- * (c) 1999 Martin Mares <mj@ucw.cz>
- */
-
-#include <asm/sections.h>
-
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-extern unsigned int __nongpreldata pci_probe;
-
-/* pci-frv.c */
-
-void pcibios_resource_survey(void);
-
-/* pci-vdk.c */
-
-extern struct pci_ops *__nongpreldata pci_root_ops;
-
-/* pci-irq.c */
-extern unsigned int pcibios_irq_mask;
-
-void pcibios_irq_init(void);
-void pcibios_fixup_irqs(void);
-void pcibios_enable_irq(struct pci_dev *dev);
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/* pci-irq.c: PCI IRQ routing on the FRV motherboard
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * derived from: arch/i386/kernel/pci-irq.c: (c) 1999--2000 Martin Mares <mj@suse.cz>
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-
-#include <asm/io.h>
-#include <asm/smp.h>
-
-#include "pci-frv.h"
-
-/*
- * DEVICE DEVNO INT#A INT#B INT#C INT#D
- * ======= ======= ======= ======= ======= =======
- * MB86943 0 fpga.10 - - -
- * RTL8029 16 fpga.12 - - -
- * SLOT 1 19 fpga.6 fpga.5 fpga.4 fpga.3
- * SLOT 2 18 fpga.5 fpga.4 fpga.3 fpga.6
- * SLOT 3 17 fpga.4 fpga.3 fpga.6 fpga.5
- *
- */
-
-static const uint8_t __initconst pci_bus0_irq_routing[32][4] = {
- [0 ] = { IRQ_FPGA_MB86943_PCI_INTA },
- [16] = { IRQ_FPGA_RTL8029_INTA },
- [17] = { IRQ_FPGA_PCI_INTC, IRQ_FPGA_PCI_INTD, IRQ_FPGA_PCI_INTA, IRQ_FPGA_PCI_INTB },
- [18] = { IRQ_FPGA_PCI_INTB, IRQ_FPGA_PCI_INTC, IRQ_FPGA_PCI_INTD, IRQ_FPGA_PCI_INTA },
- [19] = { IRQ_FPGA_PCI_INTA, IRQ_FPGA_PCI_INTB, IRQ_FPGA_PCI_INTC, IRQ_FPGA_PCI_INTD },
-};
-
-void __init pcibios_irq_init(void)
-{
-}
-
-void __init pcibios_fixup_irqs(void)
-{
- struct pci_dev *dev = NULL;
- uint8_t line, pin;
-
- for_each_pci_dev(dev) {
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
- if (pin) {
- dev->irq = pci_bus0_irq_routing[PCI_SLOT(dev->devfn)][pin - 1];
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
- }
- pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
- }
-}
-
-void pcibios_enable_irq(struct pci_dev *dev)
-{
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
-}
+++ /dev/null
-/* pci-vdk.c: MB93090-MB00 (VDK) PCI support
- *
- * Copyright (C) 2003, 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-
-#include <asm/segment.h>
-#include <asm/io.h>
-#include <asm/mb-regs.h>
-#include <asm/mb86943a.h>
-#include "pci-frv.h"
-
-unsigned int __nongpreldata pci_probe = 1;
-
-struct pci_ops *__nongpreldata pci_root_ops;
-
-/*
- * The accessible PCI window does not cover the entire CPU address space, but
- * there are devices we want to access outside of that window, so we need to
- * insert specific PCI bus resources instead of using the platform-level bus
- * resources directly for the PCI root bus.
- *
- * These are configured and inserted by pcibios_init() and are attached to the
- * root bus by pcibios_fixup_bus().
- */
-static struct resource pci_ioport_resource = {
- .name = "PCI IO",
- .start = 0,
- .end = IO_SPACE_LIMIT,
- .flags = IORESOURCE_IO,
-};
-
-static struct resource pci_iomem_resource = {
- .name = "PCI mem",
- .start = 0,
- .end = -1,
- .flags = IORESOURCE_MEM,
-};
-
-/*
- * Functions for accessing PCI configuration space
- */
-
-#define CONFIG_CMD(bus, dev, where) \
- (0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3))
-
-#define __set_PciCfgAddr(A) writel((A), (volatile void __iomem *) __region_CS1 + 0x80)
-
-#define __get_PciCfgDataB(A) readb((volatile void __iomem *) __region_CS1 + 0x88 + ((A) & 3))
-#define __get_PciCfgDataW(A) readw((volatile void __iomem *) __region_CS1 + 0x88 + ((A) & 2))
-#define __get_PciCfgDataL(A) readl((volatile void __iomem *) __region_CS1 + 0x88)
-
-#define __set_PciCfgDataB(A,V) \
- writeb((V), (volatile void __iomem *) __region_CS1 + 0x88 + (3 - ((A) & 3)))
-
-#define __set_PciCfgDataW(A,V) \
- writew((V), (volatile void __iomem *) __region_CS1 + 0x88 + (2 - ((A) & 2)))
-
-#define __set_PciCfgDataL(A,V) \
- writel((V), (volatile void __iomem *) __region_CS1 + 0x88)
-
-#define __get_PciBridgeDataB(A) readb((volatile void __iomem *) __region_CS1 + 0x800 + (A))
-#define __get_PciBridgeDataW(A) readw((volatile void __iomem *) __region_CS1 + 0x800 + (A))
-#define __get_PciBridgeDataL(A) readl((volatile void __iomem *) __region_CS1 + 0x800 + (A))
-
-#define __set_PciBridgeDataB(A,V) writeb((V), (volatile void __iomem *) __region_CS1 + 0x800 + (A))
-#define __set_PciBridgeDataW(A,V) writew((V), (volatile void __iomem *) __region_CS1 + 0x800 + (A))
-#define __set_PciBridgeDataL(A,V) writel((V), (volatile void __iomem *) __region_CS1 + 0x800 + (A))
-
-static inline int __query(const struct pci_dev *dev)
-{
-// return dev->bus->number==0 && (dev->devfn==PCI_DEVFN(0,0));
-// return dev->bus->number==1;
-// return dev->bus->number==0 &&
-// (dev->devfn==PCI_DEVFN(2,0) || dev->devfn==PCI_DEVFN(3,0));
- return 0;
-}
-
-/*****************************************************************************/
-/*
- *
- */
-static int pci_frv_read_config(struct pci_bus *bus, unsigned int devfn, int where, int size,
- u32 *val)
-{
- u32 _value;
-
- if (bus->number == 0 && devfn == PCI_DEVFN(0, 0)) {
- _value = __get_PciBridgeDataL(where & ~3);
- }
- else {
- __set_PciCfgAddr(CONFIG_CMD(bus, devfn, where));
- _value = __get_PciCfgDataL(where & ~3);
- }
-
- switch (size) {
- case 1:
- _value = _value >> ((where & 3) * 8);
- break;
-
- case 2:
- _value = _value >> ((where & 2) * 8);
- break;
-
- case 4:
- break;
-
- default:
- BUG();
- }
-
- *val = _value;
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int pci_frv_write_config(struct pci_bus *bus, unsigned int devfn, int where, int size,
- u32 value)
-{
- switch (size) {
- case 1:
- if (bus->number == 0 && devfn == PCI_DEVFN(0, 0)) {
- __set_PciBridgeDataB(where, value);
- }
- else {
- __set_PciCfgAddr(CONFIG_CMD(bus, devfn, where));
- __set_PciCfgDataB(where, value);
- }
- break;
-
- case 2:
- if (bus->number == 0 && devfn == PCI_DEVFN(0, 0)) {
- __set_PciBridgeDataW(where, value);
- }
- else {
- __set_PciCfgAddr(CONFIG_CMD(bus, devfn, where));
- __set_PciCfgDataW(where, value);
- }
- break;
-
- case 4:
- if (bus->number == 0 && devfn == PCI_DEVFN(0, 0)) {
- __set_PciBridgeDataL(where, value);
- }
- else {
- __set_PciCfgAddr(CONFIG_CMD(bus, devfn, where));
- __set_PciCfgDataL(where, value);
- }
- break;
-
- default:
- BUG();
- }
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops pci_direct_frv = {
- .read = pci_frv_read_config,
- .write = pci_frv_write_config,
-};
-
-/*
- * Before we decide to use direct hardware access mechanisms, we try to do some
- * trivial checks to ensure it at least _seems_ to be working -- we just test
- * whether bus 00 contains a host bridge (this is similar to checking
- * techniques used in XFree86, but ours should be more reliable since we
- * attempt to make use of direct access hints provided by the PCI BIOS).
- *
- * This should be close to trivial, but it isn't, because there are buggy
- * chipsets (yes, you guessed it, by Intel and Compaq) that have no class ID.
- */
-static int __init pci_sanity_check(struct pci_ops *o)
-{
- struct pci_bus bus; /* Fake bus and device */
- u32 id;
-
- bus.number = 0;
-
- if (o->read(&bus, 0, PCI_VENDOR_ID, 4, &id) == PCIBIOS_SUCCESSFUL) {
- printk("PCI: VDK Bridge device:vendor: %08x\n", id);
- if (id == 0x200e10cf)
- return 1;
- }
-
- printk("PCI: VDK Bridge: Sanity check failed\n");
- return 0;
-}
-
-static struct pci_ops * __init pci_check_direct(void)
-{
- unsigned long flags;
-
- local_irq_save(flags);
-
- /* check if access works */
- if (pci_sanity_check(&pci_direct_frv)) {
- local_irq_restore(flags);
- printk("PCI: Using configuration frv\n");
-// request_mem_region(0xBE040000, 256, "FRV bridge");
-// request_mem_region(0xBFFFFFF4, 12, "PCI frv");
- return &pci_direct_frv;
- }
-
- local_irq_restore(flags);
- return NULL;
-}
-
-/*
- * Exceptions for specific devices. Usually work-arounds for fatal design flaws.
- */
-
-static void __init pci_fixup_umc_ide(struct pci_dev *d)
-{
- /*
- * UM8886BF IDE controller sets region type bits incorrectly,
- * therefore they look like memory despite of them being I/O.
- */
- int i;
-
- printk("PCI: Fixing base address flags for device %s\n", pci_name(d));
- for(i=0; i<4; i++)
- d->resource[i].flags |= PCI_BASE_ADDRESS_SPACE_IO;
-}
-
-static void pci_fixup_ide_bases(struct pci_dev *d)
-{
- int i;
-
- /*
- * PCI IDE controllers use non-standard I/O port decoding, respect it.
- */
- if ((d->class >> 8) != PCI_CLASS_STORAGE_IDE)
- return;
- printk("PCI: IDE base address fixup for %s\n", pci_name(d));
- for(i=0; i<4; i++) {
- struct resource *r = &d->resource[i];
- if ((r->start & ~0x80) == 0x374) {
- r->start |= 2;
- r->end = r->start;
- }
- }
-}
-
-static void pci_fixup_ide_trash(struct pci_dev *d)
-{
- int i;
-
- /*
- * There exist PCI IDE controllers which have utter garbage
- * in first four base registers. Ignore that.
- */
- printk("PCI: IDE base address trash cleared for %s\n", pci_name(d));
- for(i=0; i<4; i++)
- d->resource[i].start = d->resource[i].end = d->resource[i].flags = 0;
-}
-
-static void pci_fixup_latency(struct pci_dev *d)
-{
- /*
- * SiS 5597 and 5598 chipsets require latency timer set to
- * at most 32 to avoid lockups.
- */
- DBG("PCI: Setting max latency to 32\n");
- pcibios_max_latency = 32;
-}
-
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF, pci_fixup_umc_ide);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, pci_fixup_ide_trash);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, pci_fixup_latency);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5598, pci_fixup_latency);
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_ide_bases);
-
-/*
- * Called after each bus is probed, but before its children
- * are examined.
- */
-
-void pcibios_fixup_bus(struct pci_bus *bus)
-{
-#if 0
- printk("### PCIBIOS_FIXUP_BUS(%d)\n",bus->number);
-#endif
-
- pci_read_bridge_bases(bus);
-
- if (bus->number == 0) {
- struct pci_dev *dev;
- list_for_each_entry(dev, &bus->devices, bus_list) {
- if (dev->devfn == 0) {
- dev->resource[0].start = 0;
- dev->resource[0].end = 0;
- }
- }
- }
-}
-
-/*
- * Initialization. Try all known PCI access methods. Note that we support
- * using both PCI BIOS and direct access: in such cases, we use I/O ports
- * to access config space, but we still keep BIOS order of cards to be
- * compatible with 2.0.X. This should go away some day.
- */
-
-int __init pcibios_init(void)
-{
- struct pci_bus *bus;
- struct pci_ops *dir = NULL;
- LIST_HEAD(resources);
-
- if (!mb93090_mb00_detected)
- return -ENXIO;
-
- __reg_MB86943_sl_ctl |= MB86943_SL_CTL_DRCT_MASTER_SWAP | MB86943_SL_CTL_DRCT_SLAVE_SWAP;
-
- __reg_MB86943_ecs_base(1) = ((__region_CS2 + 0x01000000) >> 9) | 0x08000000;
- __reg_MB86943_ecs_base(2) = ((__region_CS2 + 0x00000000) >> 9) | 0x08000000;
-
- *(volatile uint32_t *) (__region_CS1 + 0x848) = 0xe0000000;
- *(volatile uint32_t *) (__region_CS1 + 0x8b8) = 0x00000000;
-
- __reg_MB86943_sl_pci_io_base = (__region_CS2 + 0x04000000) >> 9;
- __reg_MB86943_sl_pci_mem_base = (__region_CS2 + 0x08000000) >> 9;
- __reg_MB86943_pci_sl_io_base = __region_CS2 + 0x04000000;
- __reg_MB86943_pci_sl_mem_base = __region_CS2 + 0x08000000;
- mb();
-
- /* enable PCI arbitration */
- __reg_MB86943_pci_arbiter = MB86943_PCIARB_EN;
-
- pci_ioport_resource.start = (__reg_MB86943_sl_pci_io_base << 9) & 0xfffffc00;
- pci_ioport_resource.end = (__reg_MB86943_sl_pci_io_range << 9) | 0x3ff;
- pci_ioport_resource.end += pci_ioport_resource.start;
-
- printk("PCI IO window: %08llx-%08llx\n",
- (unsigned long long) pci_ioport_resource.start,
- (unsigned long long) pci_ioport_resource.end);
-
- pci_iomem_resource.start = (__reg_MB86943_sl_pci_mem_base << 9) & 0xfffffc00;
- pci_iomem_resource.end = (__reg_MB86943_sl_pci_mem_range << 9) | 0x3ff;
- pci_iomem_resource.end += pci_iomem_resource.start;
-
- /* Reserve somewhere to write to flush posted writes. This is used by
- * __flush_PCI_writes() from asm/io.h to force the write FIFO in the
- * CPU-PCI bridge to flush as this doesn't happen automatically when a
- * read is performed on the MB93090 development kit motherboard.
- */
- pci_iomem_resource.start += 0x400;
-
- printk("PCI MEM window: %08llx-%08llx\n",
- (unsigned long long) pci_iomem_resource.start,
- (unsigned long long) pci_iomem_resource.end);
- printk("PCI DMA memory: %08lx-%08lx\n",
- dma_coherent_mem_start, dma_coherent_mem_end);
-
- if (insert_resource(&iomem_resource, &pci_iomem_resource) < 0)
- panic("Unable to insert PCI IOMEM resource\n");
- if (insert_resource(&ioport_resource, &pci_ioport_resource) < 0)
- panic("Unable to insert PCI IOPORT resource\n");
-
- if (!pci_probe)
- return -ENXIO;
-
- dir = pci_check_direct();
- if (dir)
- pci_root_ops = dir;
- else {
- printk("PCI: No PCI bus detected\n");
- return -ENXIO;
- }
-
- printk("PCI: Probing PCI hardware\n");
- pci_add_resource(&resources, &pci_ioport_resource);
- pci_add_resource(&resources, &pci_iomem_resource);
- bus = pci_scan_root_bus(NULL, 0, pci_root_ops, NULL, &resources);
-
- pcibios_irq_init();
- pcibios_fixup_irqs();
- pcibios_resource_survey();
- if (!bus)
- return 0;
-
- pci_bus_add_devices(bus);
- return 0;
-}
-
-arch_initcall(pcibios_init);
-
-char * __init pcibios_setup(char *str)
-{
- if (!strcmp(str, "off")) {
- pci_probe = 0;
- return NULL;
- }
- return str;
-}
-
-int pcibios_enable_device(struct pci_dev *dev, int mask)
-{
- int err;
-
- if ((err = pci_enable_resources(dev, mask)) < 0)
- return err;
- if (!dev->msi_enabled)
- pcibios_enable_irq(dev);
- return 0;
-}
+++ /dev/null
-#
-# Makefile for the arch-specific parts of the memory manager.
-#
-
-obj-y := init.o kmap.o
-
-obj-$(CONFIG_MMU) += \
- pgalloc.o highmem.o fault.o extable.o cache-page.o tlb-flush.o tlb-miss.o \
- mmu-context.o dma-alloc.o elf-fdpic.o
+++ /dev/null
-/* cache-page.c: whole-page cache wrangling functions for MMU linux
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/module.h>
-#include <asm/pgalloc.h>
-
-/*****************************************************************************/
-/*
- * DCF takes a virtual address and the page may not currently have one
- * - temporarily hijack a kmap_atomic() slot and attach the page to it
- */
-void flush_dcache_page(struct page *page)
-{
- unsigned long dampr2;
- void *vaddr;
-
- dampr2 = __get_DAMPR(2);
-
- vaddr = kmap_atomic_primary(page);
-
- frv_dcache_writeback((unsigned long) vaddr, (unsigned long) vaddr + PAGE_SIZE);
-
- kunmap_atomic_primary(vaddr);
-
- if (dampr2) {
- __set_DAMPR(2, dampr2);
- __set_IAMPR(2, dampr2);
- }
-
-} /* end flush_dcache_page() */
-
-EXPORT_SYMBOL(flush_dcache_page);
-
-/*****************************************************************************/
-/*
- * ICI takes a virtual address and the page may not currently have one
- * - so we temporarily attach the page to a bit of virtual space so that is can be flushed
- */
-void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
- unsigned long start, unsigned long len)
-{
- unsigned long dampr2;
- void *vaddr;
-
- dampr2 = __get_DAMPR(2);
-
- vaddr = kmap_atomic_primary(page);
-
- start = (start & ~PAGE_MASK) | (unsigned long) vaddr;
- frv_cache_wback_inv(start, start + len);
-
- kunmap_atomic_primary(vaddr);
-
- if (dampr2) {
- __set_DAMPR(2, dampr2);
- __set_IAMPR(2, dampr2);
- }
-
-} /* end flush_icache_user_range() */
-
-EXPORT_SYMBOL(flush_icache_user_range);
+++ /dev/null
-/* dma-alloc.c: consistent DMA memory allocation
- *
- * Derived from arch/ppc/mm/cachemap.c
- *
- * PowerPC version derived from arch/arm/mm/consistent.c
- * Copyright (C) 2001 Dan Malek (dmalek@jlc.net)
- *
- * linux/arch/arm/mm/consistent.c
- *
- * Copyright (C) 2000 Russell King
- *
- * Consistent memory allocators. Used for DMA devices that want to
- * share uncached memory with the processor core. The function return
- * is the virtual address and 'dma_handle' is the physical address.
- * Mostly stolen from the ARM port, with some changes for PowerPC.
- * -- Dan
- * Modified for 36-bit support. -Matt
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/stddef.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/hardirq.h>
-#include <linux/gfp.h>
-
-#include <asm/pgalloc.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/mmu.h>
-#include <linux/uaccess.h>
-#include <asm/smp.h>
-
-static int map_page(unsigned long va, unsigned long pa, pgprot_t prot)
-{
- pgd_t *pge;
- pud_t *pue;
- pmd_t *pme;
- pte_t *pte;
- int err = -ENOMEM;
-
- /* Use upper 10 bits of VA to index the first level map */
- pge = pgd_offset_k(va);
- pue = pud_offset(pge, va);
- pme = pmd_offset(pue, va);
-
- /* Use middle 10 bits of VA to index the second-level map */
- pte = pte_alloc_kernel(pme, va);
- if (pte != 0) {
- err = 0;
- set_pte(pte, mk_pte_phys(pa & PAGE_MASK, prot));
- }
-
- return err;
-}
-
-/*
- * This function will allocate the requested contiguous pages and
- * map them into the kernel's vmalloc() space. This is done so we
- * get unique mapping for these pages, outside of the kernel's 1:1
- * virtual:physical mapping. This is necessary so we can cover large
- * portions of the kernel with single large page TLB entries, and
- * still get unique uncached pages for consistent DMA.
- */
-void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle)
-{
- struct vm_struct *area;
- unsigned long page, va, pa;
- void *ret;
- int order, err, i;
-
- if (in_interrupt())
- BUG();
-
- /* only allocate page size areas */
- size = PAGE_ALIGN(size);
- order = get_order(size);
-
- page = __get_free_pages(gfp, order);
- if (!page) {
- BUG();
- return NULL;
- }
-
- /* allocate some common virtual space to map the new pages */
- area = get_vm_area(size, VM_ALLOC);
- if (area == 0) {
- free_pages(page, order);
- return NULL;
- }
- va = VMALLOC_VMADDR(area->addr);
- ret = (void *) va;
-
- /* this gives us the real physical address of the first page */
- *dma_handle = pa = virt_to_bus((void *) page);
-
- /* set refcount=1 on all pages in an order>0 allocation so that vfree() will actually free
- * all pages that were allocated.
- */
- if (order > 0) {
- struct page *rpage = virt_to_page(page);
- split_page(rpage, order);
- }
-
- err = 0;
- for (i = 0; i < size && err == 0; i += PAGE_SIZE)
- err = map_page(va + i, pa + i, PAGE_KERNEL_NOCACHE);
-
- if (err) {
- vfree((void *) va);
- return NULL;
- }
-
- /* we need to ensure that there are no cachelines in use, or worse dirty in this area
- * - can't do until after virtual address mappings are created
- */
- frv_cache_invalidate(va, va + size);
-
- return ret;
-}
-
-/*
- * free page(s) as defined by the above mapping.
- */
-void consistent_free(void *vaddr)
-{
- if (in_interrupt())
- BUG();
- vfree(vaddr);
-}
-
-/*
- * make an area consistent.
- */
-void consistent_sync(void *vaddr, size_t size, int direction)
-{
- unsigned long start = (unsigned long) vaddr;
- unsigned long end = start + size;
-
- switch (direction) {
- case PCI_DMA_NONE:
- BUG();
- case PCI_DMA_FROMDEVICE: /* invalidate only */
- frv_cache_invalidate(start, end);
- break;
- case PCI_DMA_TODEVICE: /* writeback only */
- frv_dcache_writeback(start, end);
- break;
- case PCI_DMA_BIDIRECTIONAL: /* writeback and invalidate */
- frv_dcache_writeback(start, end);
- break;
- }
-}
-
-/*
- * consistent_sync_page make a page are consistent. identical
- * to consistent_sync, but takes a struct page instead of a virtual address
- */
-
-void consistent_sync_page(struct page *page, unsigned long offset,
- size_t size, int direction)
-{
- void *start;
-
- start = page_address(page) + offset;
- consistent_sync(start, size, direction);
-}
+++ /dev/null
-/* elf-fdpic.c: ELF FDPIC memory layout management
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sched.h>
-#include <linux/sched/mm.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/elf-fdpic.h>
-#include <asm/mman.h>
-
-/*****************************************************************************/
-/*
- * lay out the userspace VM according to our grand design
- */
-#ifdef CONFIG_MMU
-void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params,
- struct elf_fdpic_params *interp_params,
- unsigned long *start_stack,
- unsigned long *start_brk)
-{
- *start_stack = 0x02200000UL;
-
- /* if the only executable is a shared object, assume that it is an interpreter rather than
- * a true executable, and map it such that "ld.so --list" comes out right
- */
- if (!(interp_params->flags & ELF_FDPIC_FLAG_PRESENT) &&
- exec_params->hdr.e_type != ET_EXEC
- ) {
- exec_params->load_addr = PAGE_SIZE;
-
- *start_brk = 0x80000000UL;
- }
- else {
- exec_params->load_addr = 0x02200000UL;
-
- if ((exec_params->flags & ELF_FDPIC_FLAG_ARRANGEMENT) ==
- ELF_FDPIC_FLAG_INDEPENDENT
- ) {
- exec_params->flags &= ~ELF_FDPIC_FLAG_ARRANGEMENT;
- exec_params->flags |= ELF_FDPIC_FLAG_CONSTDISP;
- }
- }
-
-} /* end elf_fdpic_arch_lay_out_mm() */
-#endif
-
-/*****************************************************************************/
-/*
- * place non-fixed mmaps firstly in the bottom part of memory, working up, and then in the top part
- * of memory, working down
- */
-unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len,
- unsigned long pgoff, unsigned long flags)
-{
- struct vm_area_struct *vma;
- struct vm_unmapped_area_info info;
-
- if (len > TASK_SIZE)
- return -ENOMEM;
-
- /* handle MAP_FIXED */
- if (flags & MAP_FIXED)
- return addr;
-
- /* only honour a hint if we're not going to clobber something doing so */
- if (addr) {
- addr = PAGE_ALIGN(addr);
- vma = find_vma(current->mm, addr);
- if (TASK_SIZE - len >= addr &&
- (!vma || addr + len <= vm_start_gap(vma)))
- goto success;
- }
-
- /* search between the bottom of user VM and the stack grow area */
- info.flags = 0;
- info.length = len;
- info.low_limit = PAGE_SIZE;
- info.high_limit = (current->mm->start_stack - 0x00200000);
- info.align_mask = 0;
- info.align_offset = 0;
- addr = vm_unmapped_area(&info);
- if (!(addr & ~PAGE_MASK))
- goto success;
- VM_BUG_ON(addr != -ENOMEM);
-
- /* search from just above the WorkRAM area to the top of memory */
- info.low_limit = PAGE_ALIGN(0x80000000);
- info.high_limit = TASK_SIZE;
- addr = vm_unmapped_area(&info);
- if (!(addr & ~PAGE_MASK))
- goto success;
- VM_BUG_ON(addr != -ENOMEM);
-
-#if 0
- printk("[area] l=%lx (ENOMEM) f='%s'\n",
- len, filp ? filp->f_path.dentry->d_name.name : "");
-#endif
- return -ENOMEM;
-
- success:
-#if 0
- printk("[area] l=%lx ad=%lx f='%s'\n",
- len, addr, filp ? filp->f_path.dentry->d_name.name : "");
-#endif
- return addr;
-} /* end arch_get_unmapped_area() */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/frv/mm/extable.c
- */
-
-#include <linux/extable.h>
-#include <linux/spinlock.h>
-#include <linux/uaccess.h>
-
-extern const void __memset_end, __memset_user_error_lr, __memset_user_error_handler;
-extern const void __memcpy_end, __memcpy_user_error_lr, __memcpy_user_error_handler;
-extern spinlock_t modlist_lock;
-
-int fixup_exception(struct pt_regs *regs)
-{
- const struct exception_table_entry *extab;
- unsigned long pc = regs->pc;
-
- /* determine if the fault lay during a memcpy_user or a memset_user */
- if (regs->lr == (unsigned long) &__memset_user_error_lr &&
- (unsigned long) &memset <= pc && pc < (unsigned long) &__memset_end
- ) {
- /* the fault occurred in a protected memset
- * - we search for the return address (in LR) instead of the program counter
- * - it was probably during a clear_user()
- */
- regs->pc = (unsigned long) &__memset_user_error_handler;
- return 1;
- }
-
- if (regs->lr == (unsigned long) &__memcpy_user_error_lr &&
- (unsigned long) &memcpy <= pc && pc < (unsigned long) &__memcpy_end
- ) {
- /* the fault occurred in a protected memset
- * - we search for the return address (in LR) instead of the program counter
- * - it was probably during a copy_to/from_user()
- */
- regs->pc = (unsigned long) &__memcpy_user_error_handler;
- return 1;
- }
-
- extab = search_exception_tables(pc);
- if (extab) {
- regs->pc = extab->fixup;
- return 1;
- }
-
- return 0;
-}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/frv/mm/fault.c
- *
- * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
- * - Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68knommu/mm/fault.c
- * - Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
- * - Copyright (C) 2000 Lineo, Inc. (www.lineo.com)
- *
- * Based on:
- *
- * linux/arch/m68k/mm/fault.c
- *
- * Copyright (C) 1995 Hamish Macdonald
- */
-
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/ptrace.h>
-#include <linux/hardirq.h>
-#include <linux/uaccess.h>
-
-#include <asm/pgtable.h>
-#include <asm/gdb-stub.h>
-
-/*****************************************************************************/
-/*
- * This routine handles page faults. It determines the problem, and
- * then passes it off to one of the appropriate routines.
- */
-asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear0)
-{
- struct vm_area_struct *vma;
- struct mm_struct *mm;
- unsigned long _pme, lrai, lrad;
- unsigned long flags = 0;
- siginfo_t info;
- pgd_t *pge;
- pud_t *pue;
- pte_t *pte;
- int fault;
-
-#if 0
- const char *atxc[16] = {
- [0x0] = "mmu-miss", [0x8] = "multi-dat", [0x9] = "multi-sat",
- [0xa] = "tlb-miss", [0xc] = "privilege", [0xd] = "write-prot",
- };
-
- printk("do_page_fault(%d,%lx [%s],%lx)\n",
- datammu, esr0, atxc[esr0 >> 20 & 0xf], ear0);
-#endif
-
- mm = current->mm;
-
- /*
- * We fault-in kernel-space virtual memory on-demand. The
- * 'reference' page table is init_mm.pgd.
- *
- * NOTE! We MUST NOT take any locks for this case. We may
- * be in an interrupt or a critical region, and should
- * only copy the information from the master page table,
- * nothing more.
- *
- * This verifies that the fault happens in kernel space
- * and that the fault was a page not present (invalid) error
- */
- if (!user_mode(__frame) && (esr0 & ESR0_ATXC) == ESR0_ATXC_AMRTLB_MISS) {
- if (ear0 >= VMALLOC_START && ear0 < VMALLOC_END)
- goto kernel_pte_fault;
- if (ear0 >= PKMAP_BASE && ear0 < PKMAP_END)
- goto kernel_pte_fault;
- }
-
- info.si_code = SEGV_MAPERR;
-
- /*
- * If we're in an interrupt or have no user
- * context, we must not take the fault..
- */
- if (faulthandler_disabled() || !mm)
- goto no_context;
-
- if (user_mode(__frame))
- flags |= FAULT_FLAG_USER;
-
- down_read(&mm->mmap_sem);
-
- vma = find_vma(mm, ear0);
- if (!vma)
- goto bad_area;
- if (vma->vm_start <= ear0)
- goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- goto bad_area;
-
- if (user_mode(__frame)) {
- /*
- * accessing the stack below %esp is always a bug.
- * The "+ 32" is there due to some instructions (like
- * pusha) doing post-decrement on the stack and that
- * doesn't show up until later..
- */
- if ((ear0 & PAGE_MASK) + 2 * PAGE_SIZE < __frame->sp) {
-#if 0
- printk("[%d] ### Access below stack @%lx (sp=%lx)\n",
- current->pid, ear0, __frame->sp);
- show_registers(__frame);
- printk("[%d] ### Code: [%08lx] %02x %02x %02x %02x %02x %02x %02x %02x\n",
- current->pid,
- __frame->pc,
- ((u8*)__frame->pc)[0],
- ((u8*)__frame->pc)[1],
- ((u8*)__frame->pc)[2],
- ((u8*)__frame->pc)[3],
- ((u8*)__frame->pc)[4],
- ((u8*)__frame->pc)[5],
- ((u8*)__frame->pc)[6],
- ((u8*)__frame->pc)[7]
- );
-#endif
- goto bad_area;
- }
- }
-
- if (expand_stack(vma, ear0))
- goto bad_area;
-
-/*
- * Ok, we have a good vm_area for this memory access, so
- * we can handle it..
- */
- good_area:
- info.si_code = SEGV_ACCERR;
- switch (esr0 & ESR0_ATXC) {
- default:
- /* handle write to write protected page */
- case ESR0_ATXC_WP_EXCEP:
-#ifdef TEST_VERIFY_AREA
- if (!(user_mode(__frame)))
- printk("WP fault at %08lx\n", __frame->pc);
-#endif
- if (!(vma->vm_flags & VM_WRITE))
- goto bad_area;
- flags |= FAULT_FLAG_WRITE;
- break;
-
- /* handle read from protected page */
- case ESR0_ATXC_PRIV_EXCEP:
- goto bad_area;
-
- /* handle read, write or exec on absent page
- * - can't support write without permitting read
- * - don't support execute without permitting read and vice-versa
- */
- case ESR0_ATXC_AMRTLB_MISS:
- if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
- goto bad_area;
- break;
- }
-
- /*
- * If for any reason at all we couldn't handle the fault,
- * make sure we exit gracefully rather than endlessly redo
- * the fault.
- */
- fault = handle_mm_fault(vma, ear0, flags);
- if (unlikely(fault & VM_FAULT_ERROR)) {
- if (fault & VM_FAULT_OOM)
- goto out_of_memory;
- else if (fault & VM_FAULT_SIGSEGV)
- goto bad_area;
- else if (fault & VM_FAULT_SIGBUS)
- goto do_sigbus;
- BUG();
- }
- if (fault & VM_FAULT_MAJOR)
- current->maj_flt++;
- else
- current->min_flt++;
-
- up_read(&mm->mmap_sem);
- return;
-
-/*
- * Something tried to access memory that isn't in our memory map..
- * Fix it, but check if it's kernel or user first..
- */
- bad_area:
- up_read(&mm->mmap_sem);
-
- /* User mode accesses just cause a SIGSEGV */
- if (user_mode(__frame)) {
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- /* info.si_code has been set above */
- info.si_addr = (void *) ear0;
- force_sig_info(SIGSEGV, &info, current);
- return;
- }
-
- no_context:
- /* are we prepared to handle this kernel fault? */
- if (fixup_exception(__frame))
- return;
-
-/*
- * Oops. The kernel tried to access some bad page. We'll have to
- * terminate things with extreme prejudice.
- */
-
- bust_spinlocks(1);
-
- if (ear0 < PAGE_SIZE)
- printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference");
- else
- printk(KERN_ALERT "Unable to handle kernel paging request");
- printk(" at virtual addr %08lx\n", ear0);
- printk(" PC : %08lx\n", __frame->pc);
- printk(" EXC : esr0=%08lx ear0=%08lx\n", esr0, ear0);
-
- asm("lrai %1,%0,#1,#0,#0" : "=&r"(lrai) : "r"(ear0));
- asm("lrad %1,%0,#1,#0,#0" : "=&r"(lrad) : "r"(ear0));
-
- printk(KERN_ALERT " LRAI: %08lx\n", lrai);
- printk(KERN_ALERT " LRAD: %08lx\n", lrad);
-
- __break_hijack_kernel_event();
-
- pge = pgd_offset(current->mm, ear0);
- pue = pud_offset(pge, ear0);
- _pme = pue->pue[0].ste[0];
-
- printk(KERN_ALERT " PGE : %8p { PME %08lx }\n", pge, _pme);
-
- if (_pme & xAMPRx_V) {
- unsigned long dampr, damlr, val;
-
- asm volatile("movsg dampr2,%0 ! movgs %2,dampr2 ! movsg damlr2,%1"
- : "=&r"(dampr), "=r"(damlr)
- : "r" (_pme | xAMPRx_L|xAMPRx_SS_16Kb|xAMPRx_S|xAMPRx_C|xAMPRx_V)
- );
-
- pte = (pte_t *) damlr + __pte_index(ear0);
- val = pte_val(*pte);
-
- asm volatile("movgs %0,dampr2" :: "r" (dampr));
-
- printk(KERN_ALERT " PTE : %8p { %08lx }\n", pte, val);
- }
-
- die_if_kernel("Oops\n");
- do_exit(SIGKILL);
-
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
- out_of_memory:
- up_read(&mm->mmap_sem);
- if (!user_mode(__frame))
- goto no_context;
- pagefault_out_of_memory();
- return;
-
- do_sigbus:
- up_read(&mm->mmap_sem);
-
- /*
- * Send a sigbus, regardless of whether we were in kernel
- * or user mode.
- */
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRERR;
- info.si_addr = (void *) ear0;
- force_sig_info(SIGBUS, &info, current);
-
- /* Kernel mode? Handle exceptions or die */
- if (!user_mode(__frame))
- goto no_context;
- return;
-
-/*
- * The fault was caused by a kernel PTE (such as installed by vmalloc or kmap)
- */
- kernel_pte_fault:
- {
- /*
- * Synchronize this task's top level page-table
- * with the 'reference' page table.
- *
- * Do _not_ use "tsk" here. We might be inside
- * an interrupt in the middle of a task switch..
- */
- int index = pgd_index(ear0);
- pgd_t *pgd, *pgd_k;
- pud_t *pud, *pud_k;
- pmd_t *pmd, *pmd_k;
- pte_t *pte_k;
-
- pgd = (pgd_t *) __get_TTBR();
- pgd = (pgd_t *)__va(pgd) + index;
- pgd_k = ((pgd_t *)(init_mm.pgd)) + index;
-
- if (!pgd_present(*pgd_k))
- goto no_context;
- //set_pgd(pgd, *pgd_k); /////// gcc ICE's on this line
-
- pud_k = pud_offset(pgd_k, ear0);
- if (!pud_present(*pud_k))
- goto no_context;
-
- pmd_k = pmd_offset(pud_k, ear0);
- if (!pmd_present(*pmd_k))
- goto no_context;
-
- pud = pud_offset(pgd, ear0);
- pmd = pmd_offset(pud, ear0);
- set_pmd(pmd, *pmd_k);
-
- pte_k = pte_offset_kernel(pmd_k, ear0);
- if (!pte_present(*pte_k))
- goto no_context;
- return;
- }
-} /* end do_page_fault() */
+++ /dev/null
-/* highmem.c: arch-specific highmem stuff
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <linux/highmem.h>
-#include <linux/module.h>
-
-void *kmap(struct page *page)
-{
- might_sleep();
- if (!PageHighMem(page))
- return page_address(page);
- return kmap_high(page);
-}
-
-EXPORT_SYMBOL(kmap);
-
-void kunmap(struct page *page)
-{
- if (in_interrupt())
- BUG();
- if (!PageHighMem(page))
- return;
- kunmap_high(page);
-}
-
-EXPORT_SYMBOL(kunmap);
-
-void *kmap_atomic(struct page *page)
-{
- unsigned long paddr;
- int type;
-
- preempt_disable();
- pagefault_disable();
- type = kmap_atomic_idx_push();
- paddr = page_to_phys(page);
-
- switch (type) {
- /*
- * The first 4 primary maps are reserved for architecture code
- */
- case 0: return __kmap_atomic_primary(0, paddr, 6);
- case 1: return __kmap_atomic_primary(0, paddr, 7);
- case 2: return __kmap_atomic_primary(0, paddr, 8);
- case 3: return __kmap_atomic_primary(0, paddr, 9);
- case 4: return __kmap_atomic_primary(0, paddr, 10);
-
- case 5 ... 5 + NR_TLB_LINES - 1:
- return __kmap_atomic_secondary(type - 5, paddr);
-
- default:
- BUG();
- return NULL;
- }
-}
-EXPORT_SYMBOL(kmap_atomic);
-
-void __kunmap_atomic(void *kvaddr)
-{
- int type = kmap_atomic_idx();
- switch (type) {
- case 0: __kunmap_atomic_primary(0, 6); break;
- case 1: __kunmap_atomic_primary(0, 7); break;
- case 2: __kunmap_atomic_primary(0, 8); break;
- case 3: __kunmap_atomic_primary(0, 9); break;
- case 4: __kunmap_atomic_primary(0, 10); break;
-
- case 5 ... 5 + NR_TLB_LINES - 1:
- __kunmap_atomic_secondary(type - 5, kvaddr);
- break;
-
- default:
- BUG();
- }
- kmap_atomic_idx_pop();
- pagefault_enable();
- preempt_enable();
-}
-EXPORT_SYMBOL(__kunmap_atomic);
+++ /dev/null
-/* init.c: memory initialisation for FRV
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Derived from:
- * - linux/arch/m68knommu/mm/init.c
- * - Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, Kenneth Albanowski <kjahds@kjahds.com>,
- * - Copyright (C) 2000 Lineo, Inc. (www.lineo.com)
- * - linux/arch/m68k/mm/init.c
- * - Copyright (C) 1995 Hamish Macdonald
- */
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/sched/task.h>
-#include <linux/pagemap.h>
-#include <linux/gfp.h>
-#include <linux/swap.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/module.h>
-
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/mmu_context.h>
-#include <asm/virtconvert.h>
-#include <asm/sections.h>
-#include <asm/tlb.h>
-
-#undef DEBUG
-
-/*
- * ZERO_PAGE is a special page that is used for zero-initialized
- * data and COW.
- */
-unsigned long empty_zero_page;
-EXPORT_SYMBOL(empty_zero_page);
-
-/*****************************************************************************/
-/*
- * paging_init() continues the virtual memory environment setup which
- * was begun by the code in arch/head.S.
- * The parameters are pointers to where to stick the starting and ending
- * addresses of available kernel virtual memory.
- */
-void __init paging_init(void)
-{
- unsigned long zones_size[MAX_NR_ZONES] = {0, };
-
- /* allocate some pages for kernel housekeeping tasks */
- empty_zero_page = (unsigned long) alloc_bootmem_pages(PAGE_SIZE);
-
- memset((void *) empty_zero_page, 0, PAGE_SIZE);
-
-#ifdef CONFIG_HIGHMEM
- if (get_num_physpages() - num_mappedpages) {
- pgd_t *pge;
- pud_t *pue;
- pmd_t *pme;
-
- pkmap_page_table = alloc_bootmem_pages(PAGE_SIZE);
-
- pge = swapper_pg_dir + pgd_index_k(PKMAP_BASE);
- pue = pud_offset(pge, PKMAP_BASE);
- pme = pmd_offset(pue, PKMAP_BASE);
- __set_pmd(pme, virt_to_phys(pkmap_page_table) | _PAGE_TABLE);
- }
-#endif
-
- /* distribute the allocatable pages across the various zones and pass them to the allocator
- */
- zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn;
-#ifdef CONFIG_HIGHMEM
- zones_size[ZONE_HIGHMEM] = get_num_physpages() - num_mappedpages;
-#endif
-
- free_area_init(zones_size);
-
-#ifdef CONFIG_MMU
- /* initialise init's MMU context */
- init_new_context(&init_task, &init_mm);
-#endif
-
-} /* end paging_init() */
-
-/*****************************************************************************/
-/*
- *
- */
-void __init mem_init(void)
-{
- unsigned long code_size = _etext - _stext;
-
- /* this will put all low memory onto the freelists */
- free_all_bootmem();
-#if defined(CONFIG_MMU) && defined(CONFIG_HIGHMEM)
- {
- unsigned long pfn;
-
- for (pfn = get_num_physpages() - 1;
- pfn >= num_mappedpages; pfn--)
- free_highmem_page(&mem_map[pfn]);
- }
-#endif
-
- mem_init_print_info(NULL);
- if (rom_length > 0 && rom_length >= code_size)
- printk("Memory available: %luKiB/%luKiB ROM\n",
- (rom_length - code_size) >> 10, rom_length >> 10);
-} /* end mem_init() */
-
-/*****************************************************************************/
-/*
- * free the memory that was only required for initialisation
- */
-void free_initmem(void)
-{
-#if defined(CONFIG_RAMKERNEL) && !defined(CONFIG_PROTECT_KERNEL)
- free_initmem_default(-1);
-#endif
-} /* end free_initmem() */
-
-/*****************************************************************************/
-/*
- * free the initial ramdisk memory
- */
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
- free_reserved_area((void *)start, (void *)end, -1, "initrd");
-} /* end free_initrd_mem() */
-#endif
+++ /dev/null
-/* kmap.c: ioremapping handlers
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/mm/kmap.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/io.h>
-
-#undef DEBUG
-
-/*****************************************************************************/
-/*
- * Map some physical address range into the kernel address space.
- */
-
-void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
-{
- return (void __iomem *)physaddr;
-}
-
-/*
- * Unmap a ioremap()ed region again
- */
-void iounmap(void volatile __iomem *addr)
-{
-}
-
-/*
- * Set new cache mode for some kernel address space.
- * The caller must push data for that range itself, if such data may already
- * be in the cache.
- */
-void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
-{
-}
+++ /dev/null
-/* mmu-context.c: MMU context allocation and management
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sched.h>
-#include <linux/sched/mm.h>
-#include <linux/sched/task.h>
-#include <linux/mm.h>
-#include <asm/tlbflush.h>
-
-#define NR_CXN 4096
-
-static unsigned long cxn_bitmap[NR_CXN / (sizeof(unsigned long) * 8)];
-static LIST_HEAD(cxn_owners_lru);
-static DEFINE_SPINLOCK(cxn_owners_lock);
-
-int __nongpreldata cxn_pinned = -1;
-
-
-/*****************************************************************************/
-/*
- * initialise a new context
- */
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
- memset(&mm->context, 0, sizeof(mm->context));
- INIT_LIST_HEAD(&mm->context.id_link);
- mm->context.itlb_cached_pge = 0xffffffffUL;
- mm->context.dtlb_cached_pge = 0xffffffffUL;
-
- return 0;
-} /* end init_new_context() */
-
-/*****************************************************************************/
-/*
- * make sure a kernel MMU context has a CPU context number
- * - call with cxn_owners_lock held
- */
-static unsigned get_cxn(mm_context_t *ctx)
-{
- struct list_head *_p;
- mm_context_t *p;
- unsigned cxn;
-
- if (!list_empty(&ctx->id_link)) {
- list_move_tail(&ctx->id_link, &cxn_owners_lru);
- }
- else {
- /* find the first unallocated context number
- * - 0 is reserved for the kernel
- */
- cxn = find_next_zero_bit(cxn_bitmap, NR_CXN, 1);
- if (cxn < NR_CXN) {
- set_bit(cxn, cxn_bitmap);
- }
- else {
- /* none remaining - need to steal someone else's cxn */
- p = NULL;
- list_for_each(_p, &cxn_owners_lru) {
- p = list_entry(_p, mm_context_t, id_link);
- if (!p->id_busy && p->id != cxn_pinned)
- break;
- }
-
- BUG_ON(_p == &cxn_owners_lru);
-
- cxn = p->id;
- p->id = 0;
- list_del_init(&p->id_link);
- __flush_tlb_mm(cxn);
- }
-
- ctx->id = cxn;
- list_add_tail(&ctx->id_link, &cxn_owners_lru);
- }
-
- return ctx->id;
-} /* end get_cxn() */
-
-/*****************************************************************************/
-/*
- * restore the current TLB miss handler mapped page tables into the MMU context and set up a
- * mapping for the page directory
- */
-void change_mm_context(mm_context_t *old, mm_context_t *ctx, pgd_t *pgd)
-{
- unsigned long _pgd;
-
- _pgd = virt_to_phys(pgd);
-
- /* save the state of the outgoing MMU context */
- old->id_busy = 0;
-
- asm volatile("movsg scr0,%0" : "=r"(old->itlb_cached_pge));
- asm volatile("movsg dampr4,%0" : "=r"(old->itlb_ptd_mapping));
- asm volatile("movsg scr1,%0" : "=r"(old->dtlb_cached_pge));
- asm volatile("movsg dampr5,%0" : "=r"(old->dtlb_ptd_mapping));
-
- /* select an MMU context number */
- spin_lock(&cxn_owners_lock);
- get_cxn(ctx);
- ctx->id_busy = 1;
- spin_unlock(&cxn_owners_lock);
-
- asm volatile("movgs %0,cxnr" : : "r"(ctx->id));
-
- /* restore the state of the incoming MMU context */
- asm volatile("movgs %0,scr0" : : "r"(ctx->itlb_cached_pge));
- asm volatile("movgs %0,dampr4" : : "r"(ctx->itlb_ptd_mapping));
- asm volatile("movgs %0,scr1" : : "r"(ctx->dtlb_cached_pge));
- asm volatile("movgs %0,dampr5" : : "r"(ctx->dtlb_ptd_mapping));
-
- /* map the PGD into uncached virtual memory */
- asm volatile("movgs %0,ttbr" : : "r"(_pgd));
- asm volatile("movgs %0,dampr3"
- :: "r"(_pgd | xAMPRx_L | xAMPRx_M | xAMPRx_SS_16Kb |
- xAMPRx_S | xAMPRx_C | xAMPRx_V));
-
-} /* end change_mm_context() */
-
-/*****************************************************************************/
-/*
- * finished with an MMU context number
- */
-void destroy_context(struct mm_struct *mm)
-{
- mm_context_t *ctx = &mm->context;
-
- spin_lock(&cxn_owners_lock);
-
- if (!list_empty(&ctx->id_link)) {
- if (ctx->id == cxn_pinned)
- cxn_pinned = -1;
-
- list_del_init(&ctx->id_link);
- clear_bit(ctx->id, cxn_bitmap);
- __flush_tlb_mm(ctx->id);
- ctx->id = 0;
- }
-
- spin_unlock(&cxn_owners_lock);
-} /* end destroy_context() */
-
-/*****************************************************************************/
-/*
- * display the MMU context currently a process is currently using
- */
-#ifdef CONFIG_PROC_FS
-char *proc_pid_status_frv_cxnr(struct mm_struct *mm, char *buffer)
-{
- spin_lock(&cxn_owners_lock);
- buffer += sprintf(buffer, "CXNR: %u\n", mm->context.id);
- spin_unlock(&cxn_owners_lock);
-
- return buffer;
-} /* end proc_pid_status_frv_cxnr() */
-#endif
-
-/*****************************************************************************/
-/*
- * (un)pin a process's mm_struct's MMU context ID
- */
-int cxn_pin_by_pid(pid_t pid)
-{
- struct task_struct *tsk;
- struct mm_struct *mm = NULL;
- int ret;
-
- /* unpin if pid is zero */
- if (pid == 0) {
- cxn_pinned = -1;
- return 0;
- }
-
- ret = -ESRCH;
-
- /* get a handle on the mm_struct */
- read_lock(&tasklist_lock);
- tsk = find_task_by_vpid(pid);
- if (tsk) {
- ret = -EINVAL;
-
- task_lock(tsk);
- if (tsk->mm) {
- mm = tsk->mm;
- mmget(mm);
- ret = 0;
- }
- task_unlock(tsk);
- }
- read_unlock(&tasklist_lock);
-
- if (ret < 0)
- return ret;
-
- /* make sure it has a CXN and pin it */
- spin_lock(&cxn_owners_lock);
- cxn_pinned = get_cxn(&mm->context);
- spin_unlock(&cxn_owners_lock);
-
- mmput(mm);
- return 0;
-} /* end cxn_pin_by_pid() */
+++ /dev/null
-/* pgalloc.c: page directory & page table allocation
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sched.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-#include <linux/quicklist.h>
-#include <asm/pgalloc.h>
-#include <asm/page.h>
-#include <asm/cacheflush.h>
-
-pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((aligned(PAGE_SIZE)));
-
-pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
-{
- pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL);
- if (pte)
- clear_page(pte);
- return pte;
-}
-
-pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
-{
- struct page *page;
-
-#ifdef CONFIG_HIGHPTE
- page = alloc_pages(GFP_KERNEL|__GFP_HIGHMEM, 0);
-#else
- page = alloc_pages(GFP_KERNEL, 0);
-#endif
- if (!page)
- return NULL;
-
- clear_highpage(page);
- if (!pgtable_page_ctor(page)) {
- __free_page(page);
- return NULL;
- }
- flush_dcache_page(page);
- return page;
-}
-
-void __set_pmd(pmd_t *pmdptr, unsigned long pmd)
-{
- unsigned long *__ste_p = pmdptr->ste;
- int loop;
-
- if (!pmd) {
- memset(__ste_p, 0, PME_SIZE);
- }
- else {
- BUG_ON(pmd & (0x3f00 | xAMPRx_SS | 0xe));
-
- for (loop = PME_SIZE; loop > 0; loop -= 4) {
- *__ste_p++ = pmd;
- pmd += __frv_PT_SIZE;
- }
- }
-
- frv_dcache_writeback((unsigned long) pmdptr, (unsigned long) (pmdptr + 1));
-}
-
-/*
- * List of all pgd's needed for non-PAE so it can invalidate entries
- * in both cached and uncached pgd's; not needed for PAE since the
- * kernel pmd is shared. If PAE were not to share the pmd a similar
- * tactic would be needed. This is essentially codepath-based locking
- * against pageattr.c; it is the unique case in which a valid change
- * of kernel pagetables can't be lazily synchronized by vmalloc faults.
- * vmalloc faults work because attached pagetables are never freed.
- * If the locking proves to be non-performant, a ticketing scheme with
- * checks at dup_mmap(), exec(), and other mmlist addition points
- * could be used. The locking scheme was chosen on the basis of
- * manfred's recommendations and having no core impact whatsoever.
- * -- nyc
- */
-DEFINE_SPINLOCK(pgd_lock);
-struct page *pgd_list;
-
-static inline void pgd_list_add(pgd_t *pgd)
-{
- struct page *page = virt_to_page(pgd);
- page->index = (unsigned long) pgd_list;
- if (pgd_list)
- set_page_private(pgd_list, (unsigned long) &page->index);
- pgd_list = page;
- set_page_private(page, (unsigned long)&pgd_list);
-}
-
-static inline void pgd_list_del(pgd_t *pgd)
-{
- struct page *next, **pprev, *page = virt_to_page(pgd);
- next = (struct page *) page->index;
- pprev = (struct page **) page_private(page);
- *pprev = next;
- if (next)
- set_page_private(next, (unsigned long) pprev);
-}
-
-void pgd_ctor(void *pgd)
-{
- unsigned long flags;
-
- if (PTRS_PER_PMD == 1)
- spin_lock_irqsave(&pgd_lock, flags);
-
- memcpy((pgd_t *) pgd + USER_PGDS_IN_LAST_PML4,
- swapper_pg_dir + USER_PGDS_IN_LAST_PML4,
- (PTRS_PER_PGD - USER_PGDS_IN_LAST_PML4) * sizeof(pgd_t));
-
- if (PTRS_PER_PMD > 1)
- return;
-
- pgd_list_add(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
- memset(pgd, 0, USER_PGDS_IN_LAST_PML4 * sizeof(pgd_t));
-}
-
-/* never called when PTRS_PER_PMD > 1 */
-void pgd_dtor(void *pgd)
-{
- unsigned long flags; /* can be called from interrupt context */
-
- spin_lock_irqsave(&pgd_lock, flags);
- pgd_list_del(pgd);
- spin_unlock_irqrestore(&pgd_lock, flags);
-}
-
-pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- return quicklist_alloc(0, GFP_KERNEL, pgd_ctor);
-}
-
-void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
- /* in the non-PAE case, clear_page_tables() clears user pgd entries */
- quicklist_free(0, pgd_dtor, pgd);
-}
-
-void __init pgtable_cache_init(void)
-{
-}
-
-void check_pgt_cache(void)
-{
- quicklist_trim(0, pgd_dtor, 25, 16);
-}
-
+++ /dev/null
-/* tlb-flush.S: TLB flushing routines
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sys.h>
-#include <linux/linkage.h>
-#include <asm/page.h>
-#include <asm/ptrace.h>
-#include <asm/spr-regs.h>
-
-.macro DEBUG ch
-# sethi.p %hi(0xfeff9c00),gr4
-# setlo %lo(0xfeff9c00),gr4
-# setlos #\ch,gr5
-# stbi gr5,@(gr4,#0)
-# membar
-.endm
-
- .section .rodata
-
- # sizes corresponding to TPXR.LMAX
- .balign 1
-__tlb_lmax_sizes:
- .byte 0, 64, 0, 0
- .byte 0, 0, 0, 0
- .byte 0, 0, 0, 0
- .byte 0, 0, 0, 0
-
- .section .text
- .balign 4
-
-###############################################################################
-#
-# flush everything
-# - void __flush_tlb_all(void)
-#
-###############################################################################
- .globl __flush_tlb_all
- .type __flush_tlb_all,@function
-__flush_tlb_all:
- DEBUG 'A'
-
- # kill cached PGE value
- setlos #0xffffffff,gr4
- movgs gr4,scr0
- movgs gr4,scr1
-
- # kill AMPR-cached TLB values
- movgs gr0,iamlr1
- movgs gr0,iampr1
- movgs gr0,damlr1
- movgs gr0,dampr1
-
- # find out how many lines there are
- movsg tpxr,gr5
- sethi.p %hi(__tlb_lmax_sizes),gr4
- srli gr5,#TPXR_LMAX_SHIFT,gr5
- setlo.p %lo(__tlb_lmax_sizes),gr4
- andi gr5,#TPXR_LMAX_SMASK,gr5
- ldub @(gr4,gr5),gr4
-
- # now, we assume that the TLB line step is page size in size
- setlos.p #PAGE_SIZE,gr5
- setlos #0,gr6
-1:
- tlbpr gr6,gr0,#6,#0
- subicc.p gr4,#1,gr4,icc0
- add gr6,gr5,gr6
- bne icc0,#2,1b
-
- DEBUG 'B'
- bralr
-
- .size __flush_tlb_all, .-__flush_tlb_all
-
-###############################################################################
-#
-# flush everything to do with one context
-# - void __flush_tlb_mm(unsigned long contextid [GR8])
-#
-###############################################################################
- .globl __flush_tlb_mm
- .type __flush_tlb_mm,@function
-__flush_tlb_mm:
- DEBUG 'M'
-
- # kill cached PGE value
- setlos #0xffffffff,gr4
- movgs gr4,scr0
- movgs gr4,scr1
-
- # specify the context we want to flush
- movgs gr8,tplr
-
- # find out how many lines there are
- movsg tpxr,gr5
- sethi.p %hi(__tlb_lmax_sizes),gr4
- srli gr5,#TPXR_LMAX_SHIFT,gr5
- setlo.p %lo(__tlb_lmax_sizes),gr4
- andi gr5,#TPXR_LMAX_SMASK,gr5
- ldub @(gr4,gr5),gr4
-
- # now, we assume that the TLB line step is page size in size
- setlos.p #PAGE_SIZE,gr5
- setlos #0,gr6
-0:
- tlbpr gr6,gr0,#5,#0
- subicc.p gr4,#1,gr4,icc0
- add gr6,gr5,gr6
- bne icc0,#2,0b
-
- DEBUG 'N'
- bralr
-
- .size __flush_tlb_mm, .-__flush_tlb_mm
-
-###############################################################################
-#
-# flush a range of addresses from the TLB
-# - void __flush_tlb_page(unsigned long contextid [GR8],
-# unsigned long start [GR9])
-#
-###############################################################################
- .globl __flush_tlb_page
- .type __flush_tlb_page,@function
-__flush_tlb_page:
- # kill cached PGE value
- setlos #0xffffffff,gr4
- movgs gr4,scr0
- movgs gr4,scr1
-
- # specify the context we want to flush
- movgs gr8,tplr
-
- # zap the matching TLB line and AMR values
- setlos #~(PAGE_SIZE-1),gr5
- and gr9,gr5,gr9
- tlbpr gr9,gr0,#5,#0
-
- bralr
-
- .size __flush_tlb_page, .-__flush_tlb_page
-
-###############################################################################
-#
-# flush a range of addresses from the TLB
-# - void __flush_tlb_range(unsigned long contextid [GR8],
-# unsigned long start [GR9],
-# unsigned long end [GR10])
-#
-###############################################################################
- .globl __flush_tlb_range
- .type __flush_tlb_range,@function
-__flush_tlb_range:
- # kill cached PGE value
- setlos #0xffffffff,gr4
- movgs gr4,scr0
- movgs gr4,scr1
-
- # specify the context we want to flush
- movgs gr8,tplr
-
- # round the start down to beginning of TLB line and end up to beginning of next TLB line
- setlos.p #~(PAGE_SIZE-1),gr5
- setlos #PAGE_SIZE,gr6
- subi.p gr10,#1,gr10
- and gr9,gr5,gr9
- and gr10,gr5,gr10
-2:
- tlbpr gr9,gr0,#5,#0
- subcc.p gr9,gr10,gr0,icc0
- add gr9,gr6,gr9
- bne icc0,#0,2b ; most likely a 1-page flush
-
- bralr
-
- .size __flush_tlb_range, .-__flush_tlb_range
+++ /dev/null
-/* tlb-miss.S: TLB miss handlers
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/sys.h>
-#include <linux/linkage.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/spr-regs.h>
-
- .section .text..tlbmiss
- .balign 4
-
- .globl __entry_insn_mmu_miss
-__entry_insn_mmu_miss:
- break
- nop
-
- .globl __entry_insn_mmu_exception
-__entry_insn_mmu_exception:
- break
- nop
-
- .globl __entry_data_mmu_miss
-__entry_data_mmu_miss:
- break
- nop
-
- .globl __entry_data_mmu_exception
-__entry_data_mmu_exception:
- break
- nop
-
-###############################################################################
-#
-# handle a lookup failure of one sort or another in a kernel TLB handler
-# On entry:
-# GR29 - faulting address
-# SCR2 - saved CCR
-#
-###############################################################################
- .type __tlb_kernel_fault,@function
-__tlb_kernel_fault:
- # see if we're supposed to re-enable single-step mode upon return
- sethi.p %hi(__break_tlb_miss_return_break),gr30
- setlo %lo(__break_tlb_miss_return_break),gr30
- movsg pcsr,gr31
-
- subcc gr31,gr30,gr0,icc0
- beq icc0,#0,__tlb_kernel_fault_sstep
-
- movsg scr2,gr30
- movgs gr30,ccr
- movgs gr29,scr2 /* save EAR0 value */
- sethi.p %hi(__kernel_current_task),gr29
- setlo %lo(__kernel_current_task),gr29
- ldi.p @(gr29,#0),gr29 /* restore GR29 */
-
- bra __entry_kernel_handle_mmu_fault
-
- # we've got to re-enable single-stepping
-__tlb_kernel_fault_sstep:
- sethi.p %hi(__break_tlb_miss_real_return_info),gr30
- setlo %lo(__break_tlb_miss_real_return_info),gr30
- lddi @(gr30,0),gr30
- movgs gr30,pcsr
- movgs gr31,psr
-
- movsg scr2,gr30
- movgs gr30,ccr
- movgs gr29,scr2 /* save EAR0 value */
- sethi.p %hi(__kernel_current_task),gr29
- setlo %lo(__kernel_current_task),gr29
- ldi.p @(gr29,#0),gr29 /* restore GR29 */
- bra __entry_kernel_handle_mmu_fault_sstep
-
- .size __tlb_kernel_fault, .-__tlb_kernel_fault
-
-###############################################################################
-#
-# handle a lookup failure of one sort or another in a user TLB handler
-# On entry:
-# GR28 - faulting address
-# SCR2 - saved CCR
-#
-###############################################################################
- .type __tlb_user_fault,@function
-__tlb_user_fault:
- # see if we're supposed to re-enable single-step mode upon return
- sethi.p %hi(__break_tlb_miss_return_break),gr30
- setlo %lo(__break_tlb_miss_return_break),gr30
- movsg pcsr,gr31
- subcc gr31,gr30,gr0,icc0
- beq icc0,#0,__tlb_user_fault_sstep
-
- movsg scr2,gr30
- movgs gr30,ccr
- bra __entry_uspace_handle_mmu_fault
-
- # we've got to re-enable single-stepping
-__tlb_user_fault_sstep:
- sethi.p %hi(__break_tlb_miss_real_return_info),gr30
- setlo %lo(__break_tlb_miss_real_return_info),gr30
- lddi @(gr30,0),gr30
- movgs gr30,pcsr
- movgs gr31,psr
- movsg scr2,gr30
- movgs gr30,ccr
- bra __entry_uspace_handle_mmu_fault_sstep
-
- .size __tlb_user_fault, .-__tlb_user_fault
-
-###############################################################################
-#
-# Kernel instruction TLB miss handler
-# On entry:
-# GR1 - kernel stack pointer
-# GR28 - saved exception frame pointer
-# GR29 - faulting address
-# GR31 - EAR0 ^ SCR0
-# SCR0 - base of virtual range covered by cached PGE from last ITLB miss (or 0xffffffff)
-# DAMR3 - mapped page directory
-# DAMR4 - mapped page table as matched by SCR0
-#
-###############################################################################
- .globl __entry_kernel_insn_tlb_miss
- .type __entry_kernel_insn_tlb_miss,@function
-__entry_kernel_insn_tlb_miss:
-#if 0
- sethi.p %hi(0xe1200004),gr30
- setlo %lo(0xe1200004),gr30
- st gr0,@(gr30,gr0)
- sethi.p %hi(0xffc00100),gr30
- setlo %lo(0xffc00100),gr30
- sth gr30,@(gr30,gr0)
- membar
-#endif
-
- movsg ccr,gr30 /* save CCR */
- movgs gr30,scr2
-
- # see if the cached page table mapping is appropriate
- srlicc.p gr31,#26,gr0,icc0
- setlos 0x3ffc,gr30
- srli.p gr29,#12,gr31 /* use EAR0[25:14] as PTE index */
- bne icc0,#0,__itlb_k_PTD_miss
-
-__itlb_k_PTD_mapped:
- # access the PTD with EAR0[25:14]
- # - DAMLR4 points to the virtual address of the appropriate page table
- # - the PTD holds 4096 PTEs
- # - the PTD must be accessed uncached
- # - the PTE must be marked accessed if it was valid
- #
- and gr31,gr30,gr31
- movsg damlr4,gr30
- add gr30,gr31,gr31
- ldi @(gr31,#0),gr30 /* fetch the PTE */
- andicc gr30,#_PAGE_PRESENT,gr0,icc0
- ori.p gr30,#_PAGE_ACCESSED,gr30
- beq icc0,#0,__tlb_kernel_fault /* jump if PTE invalid */
- sti.p gr30,@(gr31,#0) /* update the PTE */
- andi gr30,#~_PAGE_ACCESSED,gr30
-
- # we're using IAMR1 as an extra TLB entry
- # - punt the entry here (if valid) to the real TLB and then replace with the new PTE
- # - need to check DAMR1 lest we cause an multiple-DAT-hit exception
- # - IAMPR1 has no WP bit, and we mustn't lose WP information
- movsg iampr1,gr31
- andicc gr31,#xAMPRx_V,gr0,icc0
- setlos.p 0xfffff000,gr31
- beq icc0,#0,__itlb_k_nopunt /* punt not required */
-
- movsg iamlr1,gr31
- movgs gr31,tplr /* set TPLR.CXN */
- tlbpr gr31,gr0,#4,#0 /* delete matches from TLB, IAMR1, DAMR1 */
-
- movsg dampr1,gr31
- ori gr31,#xAMPRx_V,gr31 /* entry was invalidated by tlbpr #4 */
- movgs gr31,tppr
- movsg iamlr1,gr31 /* set TPLR.CXN */
- movgs gr31,tplr
- tlbpr gr31,gr0,#2,#0 /* save to the TLB */
- movsg tpxr,gr31 /* check the TLB write error flag */
- andicc.p gr31,#TPXR_E,gr0,icc0
- setlos #0xfffff000,gr31
- bne icc0,#0,__tlb_kernel_fault
-
-__itlb_k_nopunt:
-
- # assemble the new TLB entry
- and gr29,gr31,gr29
- movsg cxnr,gr31
- or gr29,gr31,gr29
- movgs gr29,iamlr1 /* xAMLR = address | context number */
- movgs gr30,iampr1
- movgs gr29,damlr1
- movgs gr30,dampr1
-
- # return, restoring registers
- movsg scr2,gr30
- movgs gr30,ccr
- sethi.p %hi(__kernel_current_task),gr29
- setlo %lo(__kernel_current_task),gr29
- ldi @(gr29,#0),gr29
- rett #0
- beq icc0,#3,0 /* prevent icache prefetch */
-
- # the PTE we want wasn't in the PTD we have mapped, so we need to go looking for a more
- # appropriate page table and map that instead
- # - access the PGD with EAR0[31:26]
- # - DAMLR3 points to the virtual address of the page directory
- # - the PGD holds 64 PGEs and each PGE/PME points to a set of page tables
-__itlb_k_PTD_miss:
- srli gr29,#26,gr31 /* calculate PGE offset */
- slli gr31,#8,gr31 /* and clear bottom bits */
-
- movsg damlr3,gr30
- ld @(gr31,gr30),gr30 /* access the PGE */
-
- andicc.p gr30,#_PAGE_PRESENT,gr0,icc0
- andicc gr30,#xAMPRx_SS,gr0,icc1
-
- # map this PTD instead and record coverage address
- ori.p gr30,#xAMPRx_L|xAMPRx_SS_16Kb|xAMPRx_S|xAMPRx_C|xAMPRx_V,gr30
- beq icc0,#0,__tlb_kernel_fault /* jump if PGE not present */
- slli.p gr31,#18,gr31
- bne icc1,#0,__itlb_k_bigpage
- movgs gr30,dampr4
- movgs gr31,scr0
-
- # we can now resume normal service
- setlos 0x3ffc,gr30
- srli.p gr29,#12,gr31 /* use EAR0[25:14] as PTE index */
- bra __itlb_k_PTD_mapped
-
-__itlb_k_bigpage:
- break
- nop
-
- .size __entry_kernel_insn_tlb_miss, .-__entry_kernel_insn_tlb_miss
-
-###############################################################################
-#
-# Kernel data TLB miss handler
-# On entry:
-# GR1 - kernel stack pointer
-# GR28 - saved exception frame pointer
-# GR29 - faulting address
-# GR31 - EAR0 ^ SCR1
-# SCR1 - base of virtual range covered by cached PGE from last DTLB miss (or 0xffffffff)
-# DAMR3 - mapped page directory
-# DAMR5 - mapped page table as matched by SCR1
-#
-###############################################################################
- .globl __entry_kernel_data_tlb_miss
- .type __entry_kernel_data_tlb_miss,@function
-__entry_kernel_data_tlb_miss:
-#if 0
- sethi.p %hi(0xe1200004),gr30
- setlo %lo(0xe1200004),gr30
- st gr0,@(gr30,gr0)
- sethi.p %hi(0xffc00100),gr30
- setlo %lo(0xffc00100),gr30
- sth gr30,@(gr30,gr0)
- membar
-#endif
-
- movsg ccr,gr30 /* save CCR */
- movgs gr30,scr2
-
- # see if the cached page table mapping is appropriate
- srlicc.p gr31,#26,gr0,icc0
- setlos 0x3ffc,gr30
- srli.p gr29,#12,gr31 /* use EAR0[25:14] as PTE index */
- bne icc0,#0,__dtlb_k_PTD_miss
-
-__dtlb_k_PTD_mapped:
- # access the PTD with EAR0[25:14]
- # - DAMLR5 points to the virtual address of the appropriate page table
- # - the PTD holds 4096 PTEs
- # - the PTD must be accessed uncached
- # - the PTE must be marked accessed if it was valid
- #
- and gr31,gr30,gr31
- movsg damlr5,gr30
- add gr30,gr31,gr31
- ldi @(gr31,#0),gr30 /* fetch the PTE */
- andicc gr30,#_PAGE_PRESENT,gr0,icc0
- ori.p gr30,#_PAGE_ACCESSED,gr30
- beq icc0,#0,__tlb_kernel_fault /* jump if PTE invalid */
- sti.p gr30,@(gr31,#0) /* update the PTE */
- andi gr30,#~_PAGE_ACCESSED,gr30
-
- # we're using DAMR1 as an extra TLB entry
- # - punt the entry here (if valid) to the real TLB and then replace with the new PTE
- # - need to check IAMR1 lest we cause an multiple-DAT-hit exception
- movsg dampr1,gr31
- andicc gr31,#xAMPRx_V,gr0,icc0
- setlos.p 0xfffff000,gr31
- beq icc0,#0,__dtlb_k_nopunt /* punt not required */
-
- movsg damlr1,gr31
- movgs gr31,tplr /* set TPLR.CXN */
- tlbpr gr31,gr0,#4,#0 /* delete matches from TLB, IAMR1, DAMR1 */
-
- movsg dampr1,gr31
- ori gr31,#xAMPRx_V,gr31 /* entry was invalidated by tlbpr #4 */
- movgs gr31,tppr
- movsg damlr1,gr31 /* set TPLR.CXN */
- movgs gr31,tplr
- tlbpr gr31,gr0,#2,#0 /* save to the TLB */
- movsg tpxr,gr31 /* check the TLB write error flag */
- andicc.p gr31,#TPXR_E,gr0,icc0
- setlos #0xfffff000,gr31
- bne icc0,#0,__tlb_kernel_fault
-
-__dtlb_k_nopunt:
-
- # assemble the new TLB entry
- and gr29,gr31,gr29
- movsg cxnr,gr31
- or gr29,gr31,gr29
- movgs gr29,iamlr1 /* xAMLR = address | context number */
- movgs gr30,iampr1
- movgs gr29,damlr1
- movgs gr30,dampr1
-
- # return, restoring registers
- movsg scr2,gr30
- movgs gr30,ccr
- sethi.p %hi(__kernel_current_task),gr29
- setlo %lo(__kernel_current_task),gr29
- ldi @(gr29,#0),gr29
- rett #0
- beq icc0,#3,0 /* prevent icache prefetch */
-
- # the PTE we want wasn't in the PTD we have mapped, so we need to go looking for a more
- # appropriate page table and map that instead
- # - access the PGD with EAR0[31:26]
- # - DAMLR3 points to the virtual address of the page directory
- # - the PGD holds 64 PGEs and each PGE/PME points to a set of page tables
-__dtlb_k_PTD_miss:
- srli gr29,#26,gr31 /* calculate PGE offset */
- slli gr31,#8,gr31 /* and clear bottom bits */
-
- movsg damlr3,gr30
- ld @(gr31,gr30),gr30 /* access the PGE */
-
- andicc.p gr30,#_PAGE_PRESENT,gr0,icc0
- andicc gr30,#xAMPRx_SS,gr0,icc1
-
- # map this PTD instead and record coverage address
- ori.p gr30,#xAMPRx_L|xAMPRx_SS_16Kb|xAMPRx_S|xAMPRx_C|xAMPRx_V,gr30
- beq icc0,#0,__tlb_kernel_fault /* jump if PGE not present */
- slli.p gr31,#18,gr31
- bne icc1,#0,__dtlb_k_bigpage
- movgs gr30,dampr5
- movgs gr31,scr1
-
- # we can now resume normal service
- setlos 0x3ffc,gr30
- srli.p gr29,#12,gr31 /* use EAR0[25:14] as PTE index */
- bra __dtlb_k_PTD_mapped
-
-__dtlb_k_bigpage:
- break
- nop
-
- .size __entry_kernel_data_tlb_miss, .-__entry_kernel_data_tlb_miss
-
-###############################################################################
-#
-# Userspace instruction TLB miss handler (with PGE prediction)
-# On entry:
-# GR28 - faulting address
-# GR31 - EAR0 ^ SCR0
-# SCR0 - base of virtual range covered by cached PGE from last ITLB miss (or 0xffffffff)
-# DAMR3 - mapped page directory
-# DAMR4 - mapped page table as matched by SCR0
-#
-###############################################################################
- .globl __entry_user_insn_tlb_miss
- .type __entry_user_insn_tlb_miss,@function
-__entry_user_insn_tlb_miss:
-#if 0
- sethi.p %hi(0xe1200004),gr30
- setlo %lo(0xe1200004),gr30
- st gr0,@(gr30,gr0)
- sethi.p %hi(0xffc00100),gr30
- setlo %lo(0xffc00100),gr30
- sth gr30,@(gr30,gr0)
- membar
-#endif
-
- movsg ccr,gr30 /* save CCR */
- movgs gr30,scr2
-
- # see if the cached page table mapping is appropriate
- srlicc.p gr31,#26,gr0,icc0
- setlos 0x3ffc,gr30
- srli.p gr28,#12,gr31 /* use EAR0[25:14] as PTE index */
- bne icc0,#0,__itlb_u_PTD_miss
-
-__itlb_u_PTD_mapped:
- # access the PTD with EAR0[25:14]
- # - DAMLR4 points to the virtual address of the appropriate page table
- # - the PTD holds 4096 PTEs
- # - the PTD must be accessed uncached
- # - the PTE must be marked accessed if it was valid
- #
- and gr31,gr30,gr31
- movsg damlr4,gr30
- add gr30,gr31,gr31
- ldi @(gr31,#0),gr30 /* fetch the PTE */
- andicc gr30,#_PAGE_PRESENT,gr0,icc0
- ori.p gr30,#_PAGE_ACCESSED,gr30
- beq icc0,#0,__tlb_user_fault /* jump if PTE invalid */
- sti.p gr30,@(gr31,#0) /* update the PTE */
- andi gr30,#~_PAGE_ACCESSED,gr30
-
- # we're using IAMR1/DAMR1 as an extra TLB entry
- # - punt the entry here (if valid) to the real TLB and then replace with the new PTE
- movsg dampr1,gr31
- andicc gr31,#xAMPRx_V,gr0,icc0
- setlos.p 0xfffff000,gr31
- beq icc0,#0,__itlb_u_nopunt /* punt not required */
-
- movsg dampr1,gr31
- movgs gr31,tppr
- movsg damlr1,gr31 /* set TPLR.CXN */
- movgs gr31,tplr
- tlbpr gr31,gr0,#2,#0 /* save to the TLB */
- movsg tpxr,gr31 /* check the TLB write error flag */
- andicc.p gr31,#TPXR_E,gr0,icc0
- setlos #0xfffff000,gr31
- bne icc0,#0,__tlb_user_fault
-
-__itlb_u_nopunt:
-
- # assemble the new TLB entry
- and gr28,gr31,gr28
- movsg cxnr,gr31
- or gr28,gr31,gr28
- movgs gr28,iamlr1 /* xAMLR = address | context number */
- movgs gr30,iampr1
- movgs gr28,damlr1
- movgs gr30,dampr1
-
- # return, restoring registers
- movsg scr2,gr30
- movgs gr30,ccr
- rett #0
- beq icc0,#3,0 /* prevent icache prefetch */
-
- # the PTE we want wasn't in the PTD we have mapped, so we need to go looking for a more
- # appropriate page table and map that instead
- # - access the PGD with EAR0[31:26]
- # - DAMLR3 points to the virtual address of the page directory
- # - the PGD holds 64 PGEs and each PGE/PME points to a set of page tables
-__itlb_u_PTD_miss:
- srli gr28,#26,gr31 /* calculate PGE offset */
- slli gr31,#8,gr31 /* and clear bottom bits */
-
- movsg damlr3,gr30
- ld @(gr31,gr30),gr30 /* access the PGE */
-
- andicc.p gr30,#_PAGE_PRESENT,gr0,icc0
- andicc gr30,#xAMPRx_SS,gr0,icc1
-
- # map this PTD instead and record coverage address
- ori.p gr30,#xAMPRx_L|xAMPRx_SS_16Kb|xAMPRx_S|xAMPRx_C|xAMPRx_V,gr30
- beq icc0,#0,__tlb_user_fault /* jump if PGE not present */
- slli.p gr31,#18,gr31
- bne icc1,#0,__itlb_u_bigpage
- movgs gr30,dampr4
- movgs gr31,scr0
-
- # we can now resume normal service
- setlos 0x3ffc,gr30
- srli.p gr28,#12,gr31 /* use EAR0[25:14] as PTE index */
- bra __itlb_u_PTD_mapped
-
-__itlb_u_bigpage:
- break
- nop
-
- .size __entry_user_insn_tlb_miss, .-__entry_user_insn_tlb_miss
-
-###############################################################################
-#
-# Userspace data TLB miss handler
-# On entry:
-# GR28 - faulting address
-# GR31 - EAR0 ^ SCR1
-# SCR1 - base of virtual range covered by cached PGE from last DTLB miss (or 0xffffffff)
-# DAMR3 - mapped page directory
-# DAMR5 - mapped page table as matched by SCR1
-#
-###############################################################################
- .globl __entry_user_data_tlb_miss
- .type __entry_user_data_tlb_miss,@function
-__entry_user_data_tlb_miss:
-#if 0
- sethi.p %hi(0xe1200004),gr30
- setlo %lo(0xe1200004),gr30
- st gr0,@(gr30,gr0)
- sethi.p %hi(0xffc00100),gr30
- setlo %lo(0xffc00100),gr30
- sth gr30,@(gr30,gr0)
- membar
-#endif
-
- movsg ccr,gr30 /* save CCR */
- movgs gr30,scr2
-
- # see if the cached page table mapping is appropriate
- srlicc.p gr31,#26,gr0,icc0
- setlos 0x3ffc,gr30
- srli.p gr28,#12,gr31 /* use EAR0[25:14] as PTE index */
- bne icc0,#0,__dtlb_u_PTD_miss
-
-__dtlb_u_PTD_mapped:
- # access the PTD with EAR0[25:14]
- # - DAMLR5 points to the virtual address of the appropriate page table
- # - the PTD holds 4096 PTEs
- # - the PTD must be accessed uncached
- # - the PTE must be marked accessed if it was valid
- #
- and gr31,gr30,gr31
- movsg damlr5,gr30
-
-__dtlb_u_using_iPTD:
- add gr30,gr31,gr31
- ldi @(gr31,#0),gr30 /* fetch the PTE */
- andicc gr30,#_PAGE_PRESENT,gr0,icc0
- ori.p gr30,#_PAGE_ACCESSED,gr30
- beq icc0,#0,__tlb_user_fault /* jump if PTE invalid */
- sti.p gr30,@(gr31,#0) /* update the PTE */
- andi gr30,#~_PAGE_ACCESSED,gr30
-
- # we're using DAMR1 as an extra TLB entry
- # - punt the entry here (if valid) to the real TLB and then replace with the new PTE
- movsg dampr1,gr31
- andicc gr31,#xAMPRx_V,gr0,icc0
- setlos.p 0xfffff000,gr31
- beq icc0,#0,__dtlb_u_nopunt /* punt not required */
-
- movsg dampr1,gr31
- movgs gr31,tppr
- movsg damlr1,gr31 /* set TPLR.CXN */
- movgs gr31,tplr
- tlbpr gr31,gr0,#2,#0 /* save to the TLB */
- movsg tpxr,gr31 /* check the TLB write error flag */
- andicc.p gr31,#TPXR_E,gr0,icc0
- setlos #0xfffff000,gr31
- bne icc0,#0,__tlb_user_fault
-
-__dtlb_u_nopunt:
-
- # assemble the new TLB entry
- and gr28,gr31,gr28
- movsg cxnr,gr31
- or gr28,gr31,gr28
- movgs gr28,iamlr1 /* xAMLR = address | context number */
- movgs gr30,iampr1
- movgs gr28,damlr1
- movgs gr30,dampr1
-
- # return, restoring registers
- movsg scr2,gr30
- movgs gr30,ccr
- rett #0
- beq icc0,#3,0 /* prevent icache prefetch */
-
- # the PTE we want wasn't in the PTD we have mapped, so we need to go looking for a more
- # appropriate page table and map that instead
- # - first of all, check the insn PGE cache - we may well get a hit there
- # - access the PGD with EAR0[31:26]
- # - DAMLR3 points to the virtual address of the page directory
- # - the PGD holds 64 PGEs and each PGE/PME points to a set of page tables
-__dtlb_u_PTD_miss:
- movsg scr0,gr31 /* consult the insn-PGE-cache key */
- xor gr28,gr31,gr31
- srlicc gr31,#26,gr0,icc0
- srli gr28,#12,gr31 /* use EAR0[25:14] as PTE index */
- bne icc0,#0,__dtlb_u_iPGE_miss
-
- # what we're looking for is covered by the insn-PGE-cache
- setlos 0x3ffc,gr30
- and gr31,gr30,gr31
- movsg damlr4,gr30
- bra __dtlb_u_using_iPTD
-
-__dtlb_u_iPGE_miss:
- srli gr28,#26,gr31 /* calculate PGE offset */
- slli gr31,#8,gr31 /* and clear bottom bits */
-
- movsg damlr3,gr30
- ld @(gr31,gr30),gr30 /* access the PGE */
-
- andicc.p gr30,#_PAGE_PRESENT,gr0,icc0
- andicc gr30,#xAMPRx_SS,gr0,icc1
-
- # map this PTD instead and record coverage address
- ori.p gr30,#xAMPRx_L|xAMPRx_SS_16Kb|xAMPRx_S|xAMPRx_C|xAMPRx_V,gr30
- beq icc0,#0,__tlb_user_fault /* jump if PGE not present */
- slli.p gr31,#18,gr31
- bne icc1,#0,__dtlb_u_bigpage
- movgs gr30,dampr5
- movgs gr31,scr1
-
- # we can now resume normal service
- setlos 0x3ffc,gr30
- srli.p gr28,#12,gr31 /* use EAR0[25:14] as PTE index */
- bra __dtlb_u_PTD_mapped
-
-__dtlb_u_bigpage:
- break
- nop
-
- .size __entry_user_data_tlb_miss, .-__entry_user_data_tlb_miss
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/bitsperlong.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef TOOLS_ARCH_FRV_UAPI_ASM_MMAN_FIX_H
-#define TOOLS_ARCH_FRV_UAPI_ASM_MMAN_FIX_H
-#include <uapi/asm-generic/mman.h>
-/* MAP_32BIT is undefined on frv, fix it for perf */
-#define MAP_32BIT 0
-#endif
git.samba.org / sfrench / cifs-2.6.git / commitdiff