1 source "arch/powerpc/platforms/Kconfig.cputype"
15 config ARCH_PHYS_ADDR_T_64BIT
16 def_bool PPC64 || PHYS_64BIT
18 config ARCH_DMA_ADDR_T_64BIT
19 def_bool ARCH_PHYS_ADDR_T_64BIT
25 config HAVE_SETUP_PER_CPU_AREA
28 config NEED_PER_CPU_EMBED_FIRST_CHUNK
32 int "Number of virtual interrupt numbers"
36 This defines the number of virtual interrupt numbers the kernel
37 can manage. Virtual interrupt numbers are what you see in
38 /proc/interrupts. If you configure your system to have too few,
39 drivers will fail to load or worse - handle with care.
41 config STACKTRACE_SUPPORT
45 config TRACE_IRQFLAGS_SUPPORT
49 config LOCKDEP_SUPPORT
53 config RWSEM_GENERIC_SPINLOCK
56 config RWSEM_XCHGADD_ALGORITHM
60 config GENERIC_LOCKBREAK
63 depends on SMP && PREEMPT
65 config ARCH_HAS_ILOG2_U32
69 config ARCH_HAS_ILOG2_U64
73 config GENERIC_HWEIGHT
77 config ARCH_HAS_DMA_SET_COHERENT_MASK
84 # Please keep this list sorted alphabetically.
86 select ARCH_HAS_DEVMEM_IS_ALLOWED
87 select ARCH_HAS_DMA_SET_COHERENT_MASK
88 select ARCH_HAS_ELF_RANDOMIZE
89 select ARCH_HAS_GCOV_PROFILE_ALL
90 select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
91 select ARCH_HAS_SG_CHAIN
92 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
93 select ARCH_HAS_UBSAN_SANITIZE_ALL
94 select ARCH_HAVE_NMI_SAFE_CMPXCHG
95 select ARCH_MIGHT_HAVE_PC_PARPORT
96 select ARCH_MIGHT_HAVE_PC_SERIO
97 select ARCH_SUPPORTS_ATOMIC_RMW
98 select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
99 select ARCH_USE_BUILTIN_BSWAP
100 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
101 select ARCH_WANT_IPC_PARSE_VERSION
103 select BUILDTIME_EXTABLE_SORT
104 select CLONE_BACKWARDS
105 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
106 select EDAC_ATOMIC_SCRUB
108 select GENERIC_ATOMIC64 if PPC32
109 select GENERIC_CLOCKEVENTS
110 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
111 select GENERIC_CMOS_UPDATE
112 select GENERIC_CPU_AUTOPROBE
113 select GENERIC_IRQ_SHOW
114 select GENERIC_IRQ_SHOW_LEVEL
115 select GENERIC_SMP_IDLE_THREAD
116 select GENERIC_STRNCPY_FROM_USER
117 select GENERIC_STRNLEN_USER
118 select GENERIC_TIME_VSYSCALL_OLD
119 select HAVE_ARCH_AUDITSYSCALL
120 select HAVE_ARCH_JUMP_LABEL
121 select HAVE_ARCH_KGDB
122 select HAVE_ARCH_SECCOMP_FILTER
123 select HAVE_ARCH_TRACEHOOK
124 select HAVE_CBPF_JIT if !PPC64
125 select HAVE_CONTEXT_TRACKING if PPC64
126 select HAVE_DEBUG_KMEMLEAK
127 select HAVE_DEBUG_STACKOVERFLOW
128 select HAVE_DMA_API_DEBUG
129 select HAVE_DYNAMIC_FTRACE
130 select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
131 select HAVE_EBPF_JIT if PPC64
132 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
133 select HAVE_FTRACE_MCOUNT_RECORD
134 select HAVE_FUNCTION_GRAPH_TRACER
135 select HAVE_FUNCTION_TRACER
136 select HAVE_GCC_PLUGINS
137 select HAVE_GENERIC_RCU_GUP
138 select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
140 select HAVE_IOREMAP_PROT
141 select HAVE_IRQ_EXIT_ON_IRQ_STACK
142 select HAVE_KERNEL_GZIP
144 select HAVE_KRETPROBES
145 select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
147 select HAVE_MEMBLOCK_NODE_MAP
148 select HAVE_MOD_ARCH_SPECIFIC
149 select HAVE_NMI if PERF_EVENTS
151 select HAVE_OPTPROBES if PPC64
152 select HAVE_PERF_EVENTS
153 select HAVE_PERF_EVENTS_NMI if PPC64
154 select HAVE_PERF_REGS
155 select HAVE_PERF_USER_STACK_DUMP
156 select HAVE_RCU_TABLE_FREE if SMP
157 select HAVE_REGS_AND_STACK_ACCESS_API
158 select HAVE_SYSCALL_TRACEPOINTS
159 select HAVE_VIRT_CPU_ACCOUNTING
161 select IRQ_FORCED_THREADING
162 select MODULES_USE_ELF_RELA
165 select OF_EARLY_FLATTREE
166 select OF_RESERVED_MEM
167 select OLD_SIGACTION if PPC32
168 select OLD_SIGSUSPEND
170 select SYSCTL_EXCEPTION_TRACE
171 select VIRT_TO_BUS if !PPC64
173 # Please keep this list sorted alphabetically.
190 select COMPAT_BINFMT_ELF
191 select ARCH_WANT_OLD_COMPAT_IPC
192 select COMPAT_OLD_SIGACTION
194 config SYSVIPC_COMPAT
196 depends on COMPAT && SYSVIPC
199 # All PPC32s use generic nvram driver through ppc_md
204 config SCHED_OMIT_FRAME_POINTER
208 config ARCH_MAY_HAVE_PC_FDC
212 config PPC_UDBG_16550
216 config GENERIC_TBSYNC
218 default y if PPC32 && SMP
230 config SYS_SUPPORTS_APM_EMULATION
231 default y if PMAC_APM_EMU
237 Used to allow a board to specify it wants an ePAPR compliant wrapper.
240 config DEFAULT_UIMAGE
243 Used to allow a board to specify it wants a uImage built by default
246 config ARCH_HIBERNATION_POSSIBLE
250 config ARCH_SUSPEND_POSSIBLE
252 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
253 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
256 config PPC_DCR_NATIVE
266 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
269 config PPC_OF_PLATFORM_PCI
272 depends on PPC64 # not supported on 32 bits yet
275 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
276 depends on PPC32 || PPC_STD_MMU_64
279 config ARCH_SUPPORTS_UPROBES
282 config PPC_ADV_DEBUG_REGS
284 depends on 40x || BOOKE
287 config PPC_ADV_DEBUG_IACS
289 depends on PPC_ADV_DEBUG_REGS
293 config PPC_ADV_DEBUG_DACS
295 depends on PPC_ADV_DEBUG_REGS
298 config PPC_ADV_DEBUG_DVCS
300 depends on PPC_ADV_DEBUG_REGS
304 config PPC_ADV_DEBUG_DAC_RANGE
306 depends on PPC_ADV_DEBUG_REGS && 44x
309 config PPC_EMULATE_SSTEP
311 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
317 config PGTABLE_LEVELS
320 default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
323 source "init/Kconfig"
325 source "kernel/Kconfig.freezer"
327 source "arch/powerpc/sysdev/Kconfig"
328 source "arch/powerpc/platforms/Kconfig"
330 menu "Kernel options"
333 bool "High memory support"
336 source kernel/Kconfig.hz
337 source kernel/Kconfig.preempt
338 source "fs/Kconfig.binfmt"
340 config HUGETLB_PAGE_SIZE_VARIABLE
342 depends on HUGETLB_PAGE
345 config MATH_EMULATION
346 bool "Math emulation"
347 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
349 Some PowerPC chips designed for embedded applications do not have
350 a floating-point unit and therefore do not implement the
351 floating-point instructions in the PowerPC instruction set. If you
352 say Y here, the kernel will include code to emulate a floating-point
353 unit, which will allow programs that use floating-point
356 This is also useful to emulate missing (optional) instructions
357 such as fsqrt on cores that do have an FPU but do not implement
358 them (such as Freescale BookE).
361 prompt "Math emulation options"
362 default MATH_EMULATION_FULL
363 depends on MATH_EMULATION
365 config MATH_EMULATION_FULL
366 bool "Emulate all the floating point instructions"
368 Select this option will enable the kernel to support to emulate
369 all the floating point instructions. If your SoC doesn't have
370 a FPU, you should select this.
372 config MATH_EMULATION_HW_UNIMPLEMENTED
373 bool "Just emulate the FPU unimplemented instructions"
375 Select this if you know there does have a hardware FPU on your
376 SoC, but some floating point instructions are not implemented by that.
380 config PPC_TRANSACTIONAL_MEM
381 bool "Transactional Memory support for POWERPC"
382 depends on PPC_BOOK3S_64
388 Support user-mode Transactional Memory on POWERPC.
390 config DISABLE_MPROFILE_KERNEL
391 bool "Disable use of mprofile-kernel for kernel tracing"
392 depends on PPC64 && CPU_LITTLE_ENDIAN
395 Selecting this options disables use of the mprofile-kernel ABI for
396 kernel tracing. That will cause options such as live patching
397 (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
400 If you have a toolchain which supports mprofile-kernel, then you can
401 disable this. Otherwise leave it enabled. If you're not sure, say
404 config MPROFILE_KERNEL
405 depends on PPC64 && CPU_LITTLE_ENDIAN
406 def_bool !DISABLE_MPROFILE_KERNEL
408 config USE_THIN_ARCHIVES
409 bool "Build the kernel using thin archives"
413 Build the kernel using thin archives.
414 If you're unsure say N.
420 bool "SWIOTLB support"
424 Support for IO bounce buffering for systems without an IOMMU.
425 This allows us to DMA to the full physical address space on
426 platforms where the size of a physical address is larger
427 than the bus address. Not all platforms support this.
430 bool "Support for enabling/disabling CPUs"
431 depends on SMP && (PPC_PSERIES || \
432 PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
434 Say Y here to be able to disable and re-enable individual
435 CPUs at runtime on SMP machines.
437 Say N if you are unsure.
439 config ARCH_CPU_PROBE_RELEASE
441 depends on HOTPLUG_CPU
443 config ARCH_ENABLE_MEMORY_HOTPLUG
446 config ARCH_HAS_WALK_MEMORY
449 config ARCH_ENABLE_MEMORY_HOTREMOVE
452 config PPC64_SUPPORTS_MEMORY_FAILURE
453 bool "Add support for memory hwpoison"
454 depends on PPC_BOOK3S_64
455 default "y" if PPC_POWERNV
456 select ARCH_SUPPORTS_MEMORY_FAILURE
459 bool "kexec system call"
460 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
463 kexec is a system call that implements the ability to shutdown your
464 current kernel, and to start another kernel. It is like a reboot
465 but it is independent of the system firmware. And like a reboot
466 you can start any kernel with it, not just Linux.
468 The name comes from the similarity to the exec system call.
470 It is an ongoing process to be certain the hardware in a machine
471 is properly shutdown, so do not be surprised if this code does not
472 initially work for you. As of this writing the exact hardware
473 interface is strongly in flux, so no good recommendation can be
477 bool "kexec file based system call"
479 select HAVE_IMA_KEXEC
483 depends on CRYPTO_SHA256=y
485 This is a new version of the kexec system call. This call is
486 file based and takes in file descriptors as system call arguments
487 for kernel and initramfs as opposed to a list of segments as is the
488 case for the older kexec call.
491 bool "Build a relocatable kernel"
492 depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE))
493 select NONSTATIC_KERNEL
494 select MODULE_REL_CRCS if MODVERSIONS
496 This builds a kernel image that is capable of running at the
497 location the kernel is loaded at. For ppc32, there is no any
498 alignment restrictions, and this feature is a superset of
499 DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
500 16k-aligned base address. The kernel is linked as a
501 position-independent executable (PIE) and contains dynamic relocations
502 which are processed early in the bootup process.
504 One use is for the kexec on panic case where the recovery kernel
505 must live at a different physical address than the primary
508 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
509 it has been loaded at and the compile time physical addresses
510 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
511 setting can still be useful to bootwrappers that need to know the
512 load address of the kernel (eg. u-boot/mkimage).
514 config RELOCATABLE_TEST
515 bool "Test relocatable kernel"
516 depends on (PPC64 && RELOCATABLE)
519 This runs the relocatable kernel at the address it was initially
520 loaded at, which tends to be non-zero and therefore test the
524 bool "Build a kdump crash kernel"
525 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
526 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
528 Build a kernel suitable for use as a kdump capture kernel.
529 The same kernel binary can be used as production kernel and dump
533 bool "Firmware-assisted dump"
534 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC_CORE
536 A robust mechanism to get reliable kernel crash dump with
537 assistance from firmware. This approach does not use kexec,
538 instead firmware assists in booting the kdump kernel
539 while preserving memory contents. Firmware-assisted dump
540 is meant to be a kdump replacement offering robustness and
541 speed not possible without system firmware assistance.
546 bool "Distribute interrupts on all CPUs by default"
549 This option gives the kernel permission to distribute IRQs across
550 multiple CPUs. Saying N here will route all IRQs to the first
551 CPU. Generally saying Y is safe, although some problems have been
552 reported with SMP Power Macintoshes with this option enabled.
557 default y if SMP && PPC_PSERIES
563 depends on NEED_MULTIPLE_NODES
565 config USE_PERCPU_NUMA_NODE_ID
569 config HAVE_MEMORYLESS_NODES
573 config ARCH_SELECT_MEMORY_MODEL
577 config ARCH_FLATMEM_ENABLE
579 depends on (PPC64 && !NUMA) || PPC32
581 config ARCH_SPARSEMEM_ENABLE
584 select SPARSEMEM_VMEMMAP_ENABLE
586 config ARCH_SPARSEMEM_DEFAULT
588 depends on (SMP && PPC_PSERIES) || PPC_PS3
590 config SYS_SUPPORTS_HUGETLBFS
593 config ILLEGAL_POINTER_VALUE
595 # This is roughly half way between the top of user space and the bottom
596 # of kernel space, which seems about as good as we can get.
597 default 0x5deadbeef0000000 if PPC64
602 config ARCH_MEMORY_PROBE
604 depends on MEMORY_HOTPLUG
606 # Some NUMA nodes have memory ranges that span
607 # other nodes. Even though a pfn is valid and
608 # between a node's start and end pfns, it may not
609 # reside on that node. See memmap_init_zone()
611 config NODES_SPAN_OTHER_NODES
613 depends on NEED_MULTIPLE_NODES
616 bool "Using standard binutils settings"
620 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
621 Note, that kernel will be able to run only those applications,
622 which had been compiled using binutils later than 2.17.50.0.3 with
623 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
624 the older binutils, you can patch them with a trivial patch, which
625 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
631 Select the kernel logical page size. Increasing the page size
632 will reduce software overhead at each page boundary, allow
633 hardware prefetch mechanisms to be more effective, and allow
634 larger dma transfers increasing IO efficiency and reducing
635 overhead. However the utilization of memory will increase.
636 For example, each cached file will using a multiple of the
637 page size to hold its contents and the difference between the
638 end of file and the end of page is wasted.
640 Some dedicated systems, such as software raid serving with
641 accelerated calculations, have shown significant increases.
643 If you configure a 64 bit kernel for 64k pages but the
644 processor does not support them, then the kernel will simulate
645 them with 4k pages, loading them on demand, but with the
646 reduced software overhead and larger internal fragmentation.
647 For the 32 bit kernel, a large page option will not be offered
648 unless it is supported by the configured processor.
650 If unsure, choose 4K_PAGES.
654 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
658 depends on 44x || PPC_8xx
662 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
663 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
665 config PPC_256K_PAGES
666 bool "256k page size"
667 depends on 44x && !STDBINUTILS
669 Make the page size 256k.
671 As the ELF standard only requires alignment to support page
672 sizes up to 64k, you will need to compile all of your user
673 space applications with a non-standard binutils settings
674 (see the STDBINUTILS description for details).
676 Say N unless you know what you are doing.
680 config FORCE_MAX_ZONEORDER
681 int "Maximum zone order"
682 range 8 9 if PPC64 && PPC_64K_PAGES
683 default "9" if PPC64 && PPC_64K_PAGES
684 range 13 13 if PPC64 && !PPC_64K_PAGES
685 default "13" if PPC64 && !PPC_64K_PAGES
686 range 9 64 if PPC32 && PPC_16K_PAGES
687 default "9" if PPC32 && PPC_16K_PAGES
688 range 7 64 if PPC32 && PPC_64K_PAGES
689 default "7" if PPC32 && PPC_64K_PAGES
690 range 5 64 if PPC32 && PPC_256K_PAGES
691 default "5" if PPC32 && PPC_256K_PAGES
695 The kernel memory allocator divides physically contiguous memory
696 blocks into "zones", where each zone is a power of two number of
697 pages. This option selects the largest power of two that the kernel
698 keeps in the memory allocator. If you need to allocate very large
699 blocks of physically contiguous memory, then you may need to
702 This config option is actually maximum order plus one. For example,
703 a value of 11 means that the largest free memory block is 2^10 pages.
705 The page size is not necessarily 4KB. For example, on 64-bit
706 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
707 this in mind when choosing a value for this option.
709 config PPC_SUBPAGE_PROT
710 bool "Support setting protections for 4k subpages"
711 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
713 This option adds support for a system call to allow user programs
714 to set access permissions (read/write, readonly, or no access)
715 on the 4k subpages of each 64k page.
717 config PPC_COPRO_BASE
722 bool "SMT (Hyperthreading) scheduler support"
723 depends on PPC64 && SMP
725 SMT scheduler support improves the CPU scheduler's decision making
726 when dealing with POWER5 cpus at a cost of slightly increased
727 overhead in some places. If unsure say N here.
729 config PPC_DENORMALISATION
730 bool "PowerPC denormalisation exception handling"
731 depends on PPC_BOOK3S_64
732 default "y" if PPC_POWERNV
734 Add support for handling denormalisation of single precision
735 values. Useful for bare metal only. If unsure say Y here.
738 bool "Default bootloader kernel arguments"
741 string "Initial kernel command string"
742 depends on CMDLINE_BOOL
743 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
745 On some platforms, there is currently no way for the boot loader to
746 pass arguments to the kernel. For these platforms, you can supply
747 some command-line options at build time by entering them here. In
748 most cases you will need to specify the root device here.
751 bool "Always use the default kernel command string"
752 depends on CMDLINE_BOOL
754 Always use the default kernel command string, even if the boot
755 loader passes other arguments to the kernel.
756 This is useful if you cannot or don't want to change the
757 command-line options your boot loader passes to the kernel.
760 string "Additional default image types"
762 List additional targets to be built by the bootwrapper here (separated
763 by spaces). This is useful for targets that depend of device tree
764 files in the .dts directory.
766 Targets in this list will be build as part of the default build
767 target, or when the user does a 'make zImage' or a
768 'make zImage.initrd'.
770 If unsure, leave blank
772 config ARCH_WANTS_FREEZER_CONTROL
776 source kernel/power/Kconfig
779 bool "Enable seccomp to safely compute untrusted bytecode"
783 This kernel feature is useful for number crunching applications
784 that may need to compute untrusted bytecode during their
785 execution. By using pipes or other transports made available to
786 the process as file descriptors supporting the read/write
787 syscalls, it's possible to isolate those applications in
788 their own address space using seccomp. Once seccomp is
789 enabled via /proc/<pid>/seccomp, it cannot be disabled
790 and the task is only allowed to execute a few safe syscalls
791 defined by each seccomp mode.
793 If unsure, say Y. Only embedded should say N here.
804 bool "Support for ISA-bus hardware"
808 Find out whether you have ISA slots on your motherboard. ISA is the
809 name of a bus system, i.e. the way the CPU talks to the other stuff
810 inside your box. If you have an Apple machine, say N here; if you
811 have an IBM RS/6000 or pSeries machine, say Y. If you have an
812 embedded board, consult your board documentation.
818 config NEED_DMA_MAP_STATE
819 def_bool (PPC64 || NOT_COHERENT_CACHE)
821 config NEED_SG_DMA_LENGTH
824 config GENERIC_ISA_DMA
826 depends on ISA_DMA_API
829 config PPC_INDIRECT_PCI
832 default y if 40x || 44x
846 select PPC_INDIRECT_PCI
852 depends on SUSPEND && (PPC_85xx || PPC_86xx)
854 Freescale MPC85xx/MPC86xx power management controller support
855 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
860 depends on SUSPEND && (44x || 40x)
862 PPC4xx Clock Power Management (CPM) support (suspend/resume).
863 It also enables support for two different idle states (idle-wait
870 bool "Freescale Local Bus support"
872 Enables reporting of errors from the Freescale local bus
873 controller. Also contains some common code used by
874 drivers for specific local bus peripherals.
878 depends on PPC_83xx || QUICC_ENGINE || CPM2
880 Freescale General-purpose Timers support
882 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
886 # Platforms that what PCI turned unconditionally just do select PCI
887 # in their config node. Platforms that want to choose at config
888 # time should select PPC_PCI_CHOICE
889 config PPC_PCI_CHOICE
893 bool "PCI support" if PPC_PCI_CHOICE
894 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
895 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
896 default PCI_QSPAN if !4xx && !CPM2 && 8xx
897 select GENERIC_PCI_IOMAP
899 Find out whether your system includes a PCI bus. PCI is the name of
900 a bus system, i.e. the way the CPU talks to the other stuff inside
901 your box. If you say Y here, the kernel will include drivers and
902 infrastructure code to support PCI bus devices.
912 depends on !4xx && !CPM2 && 8xx
915 Say Y here if you have a system based on a Motorola 8xx-series
916 embedded processor with a QSPAN PCI interface, otherwise say N.
920 depends on PCI && 8260
921 select PPC_INDIRECT_PCI
924 source "drivers/pci/Kconfig"
926 source "drivers/pcmcia/Kconfig"
933 tristate "RapidIO support"
934 depends on HAS_RAPIDIO || PCI
936 If you say Y here, the kernel will include drivers and
937 infrastructure code to support RapidIO interconnect devices.
940 bool "Freescale Embedded SRIO Controller support"
941 depends on RAPIDIO = y && HAS_RAPIDIO
944 Include support for RapidIO controller on Freescale embedded
945 processors (MPC8548, MPC8641, etc).
947 source "drivers/rapidio/Kconfig"
951 config NONSTATIC_KERNEL
955 menu "Advanced setup"
958 config ADVANCED_OPTIONS
959 bool "Prompt for advanced kernel configuration options"
961 This option will enable prompting for a variety of advanced kernel
962 configuration options. These options can cause the kernel to not
963 work if they are set incorrectly, but can be used to optimize certain
964 aspects of kernel memory management.
966 Unless you know what you are doing, say N here.
968 comment "Default settings for advanced configuration options are used"
969 depends on !ADVANCED_OPTIONS
971 config LOWMEM_SIZE_BOOL
972 bool "Set maximum low memory"
973 depends on ADVANCED_OPTIONS
975 This option allows you to set the maximum amount of memory which
976 will be used as "low memory", that is, memory which the kernel can
977 access directly, without having to set up a kernel virtual mapping.
978 This can be useful in optimizing the layout of kernel virtual
981 Say N here unless you know what you are doing.
984 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
987 config LOWMEM_CAM_NUM_BOOL
988 bool "Set number of CAMs to use to map low memory"
989 depends on ADVANCED_OPTIONS && FSL_BOOKE
991 This option allows you to set the maximum number of CAM slots that
992 will be used to map low memory. There are a limited number of slots
993 available and even more limited number that will fit in the L1 MMU.
994 However, using more entries will allow mapping more low memory. This
995 can be useful in optimizing the layout of kernel virtual memory.
997 Say N here unless you know what you are doing.
999 config LOWMEM_CAM_NUM
1000 depends on FSL_BOOKE
1001 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
1004 config DYNAMIC_MEMSTART
1005 bool "Enable page aligned dynamic load address for kernel"
1006 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
1007 select NONSTATIC_KERNEL
1009 This option enables the kernel to be loaded at any page aligned
1010 physical address. The kernel creates a mapping from KERNELBASE to
1011 the address where the kernel is loaded. The page size here implies
1012 the TLB page size of the mapping for kernel on the particular platform.
1013 Please refer to the init code for finding the TLB page size.
1015 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
1016 kernel image, where the only restriction is the page aligned kernel
1017 load address. When this option is enabled, the compile time physical
1018 address CONFIG_PHYSICAL_START is ignored.
1020 This option is overridden by CONFIG_RELOCATABLE
1022 config PAGE_OFFSET_BOOL
1023 bool "Set custom page offset address"
1024 depends on ADVANCED_OPTIONS
1026 This option allows you to set the kernel virtual address at which
1027 the kernel will map low memory. This can be useful in optimizing
1028 the virtual memory layout of the system.
1030 Say N here unless you know what you are doing.
1033 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
1034 default "0xc0000000"
1036 config KERNEL_START_BOOL
1037 bool "Set custom kernel base address"
1038 depends on ADVANCED_OPTIONS
1040 This option allows you to set the kernel virtual address at which
1041 the kernel will be loaded. Normally this should match PAGE_OFFSET
1042 however there are times (like kdump) that one might not want them
1045 Say N here unless you know what you are doing.
1048 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1049 default PAGE_OFFSET if PAGE_OFFSET_BOOL
1050 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
1051 default "0xc0000000"
1053 config PHYSICAL_START_BOOL
1054 bool "Set physical address where the kernel is loaded"
1055 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1057 This gives the physical address where the kernel is loaded.
1059 Say N here unless you know what you are doing.
1061 config PHYSICAL_START
1062 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1063 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
1064 default "0x00000000"
1066 config PHYSICAL_ALIGN
1068 default "0x04000000" if FSL_BOOKE
1070 This value puts the alignment restrictions on physical address
1071 where kernel is loaded and run from. Kernel is compiled for an
1072 address which meets above alignment restriction.
1074 config TASK_SIZE_BOOL
1075 bool "Set custom user task size"
1076 depends on ADVANCED_OPTIONS
1078 This option allows you to set the amount of virtual address space
1079 allocated to user tasks. This can be useful in optimizing the
1080 virtual memory layout of the system.
1082 Say N here unless you know what you are doing.
1085 hex "Size of user task space" if TASK_SIZE_BOOL
1086 default "0x80000000" if PPC_8xx
1087 default "0xc0000000"
1089 config CONSISTENT_SIZE_BOOL
1090 bool "Set custom consistent memory pool size"
1091 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1093 This option allows you to set the size of the
1094 consistent memory pool. This pool of virtual memory
1095 is used to make consistent memory allocations.
1097 config CONSISTENT_SIZE
1098 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1099 default "0x00200000" if NOT_COHERENT_CACHE
1102 bool "Pinned Kernel TLBs (860 ONLY)"
1103 depends on ADVANCED_OPTIONS && 8xx
1106 bool "Pinned TLB for IMMR"
1112 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1115 default "0xc000000000000000"
1118 default "0xc000000000000000"
1119 config PHYSICAL_START
1121 default "0x00000000"
1127 source "net/Kconfig"
1129 source "drivers/Kconfig"
1133 source "lib/Kconfig"
1135 source "arch/powerpc/Kconfig.debug"
1137 source "security/Kconfig"
1141 depends on COMPAT && KEYS
1144 source "crypto/Kconfig"
1146 config PPC_LIB_RHEAP
1149 source "arch/powerpc/kvm/Kconfig"
1151 source "kernel/livepatch/Kconfig"