1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "64-bit kernel" if "$(ARCH)" = "sparc"
4 default "$(ARCH)" = "sparc64"
6 SPARC is a family of RISC microprocessors designed and marketed by
7 Sun Microsystems, incorporated. They are very widely found in Sun
8 workstations and clones.
10 Say yes to build a 64-bit kernel - formerly known as sparc64
11 Say no to build a 32-bit kernel - formerly known as sparc
16 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
17 select ARCH_MIGHT_HAVE_PC_SERIO
21 select HAVE_ASM_MODVERSIONS
23 select HAVE_ARCH_KGDB if !SMP || SPARC64
24 select HAVE_ARCH_TRACEHOOK
25 select HAVE_ARCH_SECCOMP if SPARC64
26 select HAVE_EXIT_THREAD
28 select SYSCTL_EXCEPTION_TRACE
32 select HAVE_ARCH_JUMP_LABEL if SPARC64
33 select GENERIC_IRQ_SHOW
34 select ARCH_WANT_IPC_PARSE_VERSION
35 select GENERIC_PCI_IOMAP
36 select HAVE_NMI_WATCHDOG if SPARC64
37 select HAVE_CBPF_JIT if SPARC32
38 select HAVE_EBPF_JIT if SPARC64
39 select HAVE_DEBUG_BUGVERBOSE
40 select GENERIC_SMP_IDLE_THREAD
41 select GENERIC_STRNCPY_FROM_USER
42 select GENERIC_STRNLEN_USER
43 select MODULES_USE_ELF_RELA
44 select PCI_SYSCALL if PCI
45 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
46 select ODD_RT_SIGACTION
48 select CPU_NO_EFFICIENT_FFS
49 select LOCKDEP_SMALL if LOCKDEP
50 select NEED_DMA_MAP_STATE
51 select NEED_SG_DMA_LENGTH
56 select ARCH_32BIT_OFF_T
57 select ARCH_HAS_SYNC_DMA_FOR_CPU
58 select GENERIC_ATOMIC64
65 select HAVE_FUNCTION_TRACER
66 select HAVE_FUNCTION_GRAPH_TRACER
67 select HAVE_KRETPROBES
69 select MMU_GATHER_RCU_TABLE_FREE if SMP
70 select HAVE_ARCH_TRANSPARENT_HUGEPAGE
71 select HAVE_DYNAMIC_FTRACE
72 select HAVE_FTRACE_MCOUNT_RECORD
73 select HAVE_SYSCALL_TRACEPOINTS
74 select HAVE_CONTEXT_TRACKING
76 select HAVE_DEBUG_KMEMLEAK
82 select RTC_DRV_STARFIRE
83 select HAVE_PERF_EVENTS
84 select PERF_USE_VMALLOC
85 select ARCH_HAVE_NMI_SAFE_CMPXCHG
86 select HAVE_C_RECORDMCOUNT
87 select HAVE_ARCH_AUDITSYSCALL
88 select ARCH_SUPPORTS_ATOMIC_RMW
89 select ARCH_SUPPORTS_DEBUG_PAGEALLOC
91 select HAVE_REGS_AND_STACK_ACCESS_API
92 select ARCH_USE_QUEUED_RWLOCKS
93 select ARCH_USE_QUEUED_SPINLOCKS
94 select GENERIC_TIME_VSYSCALL
95 select ARCH_CLOCKSOURCE_DATA
96 select ARCH_HAS_PTE_SPECIAL
97 select PCI_DOMAINS if PCI
98 select ARCH_HAS_GIGANTIC_PAGE
100 config ARCH_PROC_KCORE_TEXT
103 config CPU_BIG_ENDIAN
110 config STACKTRACE_SUPPORT
114 config LOCKDEP_SUPPORT
118 config ARCH_HIBERNATION_POSSIBLE
119 def_bool y if SPARC64
125 config HAVE_SETUP_PER_CPU_AREA
126 def_bool y if SPARC64
128 config NEED_PER_CPU_EMBED_FIRST_CHUNK
129 def_bool y if SPARC64
131 config NEED_PER_CPU_PAGE_FIRST_CHUNK
132 def_bool y if SPARC64
147 config GENERIC_ISA_DMA
151 config PGTABLE_LEVELS
155 config ARCH_SUPPORTS_UPROBES
156 def_bool y if SPARC64
158 menu "Processor type and features"
161 bool "Symmetric multi-processing support"
163 This enables support for systems with more than one CPU. If you have
164 a system with only one CPU, say N. If you have a system with more
167 If you say N here, the kernel will run on uni- and multiprocessor
168 machines, but will use only one CPU of a multiprocessor machine. If
169 you say Y here, the kernel will run on many, but not all,
170 uniprocessor machines. On a uniprocessor machine, the kernel
171 will run faster if you say N here.
173 People using multiprocessor machines who say Y here should also say
174 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
175 Management" code will be disabled if you say Y here.
177 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
178 available at <https://www.tldp.org/docs.html#howto>.
180 If you don't know what to do here, say N.
183 int "Maximum number of CPUs"
185 range 2 32 if SPARC32
186 range 2 4096 if SPARC64
187 default 32 if SPARC32
188 default 4096 if SPARC64
190 source "kernel/Kconfig.hz"
192 config GENERIC_HWEIGHT
196 config GENERIC_CALIBRATE_DELAY
200 config ARCH_MAY_HAVE_PC_FDC
204 config EMULATED_CMPXCHG
208 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
209 is emulated, and therefore it is not completely atomic.
215 depends on SPARC32 && SMP
220 depends on SPARC64 && SMP
223 bool "Support for early boot text console"
227 Say Y here to enable a faster early framebuffer boot console.
230 bool "Support for hot-pluggable CPUs"
231 depends on SPARC64 && SMP
233 Say Y here to experiment with turning CPUs off and on. CPUs
234 can be controlled through /sys/devices/system/cpu/cpu#.
235 Say N if you want to disable CPU hotplug.
238 source "drivers/cpufreq/Kconfig"
242 tristate "UltraSPARC-III Memory Controller driver"
246 This adds a driver for the UltraSPARC-III memory controller.
247 Loading this driver allows exact mnemonic strings to be
248 printed in the event of a memory error, so that the faulty DIMM
249 on the motherboard can be matched to the error.
251 If in doubt, say Y, as this information can be very useful.
253 # Global things across all Sun machines.
254 config GENERIC_LOCKBREAK
257 depends on SPARC64 && SMP && PREEMPTION
261 depends on SPARC64 && SMP
264 int "Maximum NUMA Nodes (as a power of 2)"
267 depends on NEED_MULTIPLE_NODES
269 Specify the maximum number of NUMA Nodes available on the target
270 system. Increases memory reserved to accommodate various tables.
272 config ARCH_SPARSEMEM_ENABLE
273 def_bool y if SPARC64
274 select SPARSEMEM_VMEMMAP_ENABLE
276 config ARCH_SPARSEMEM_DEFAULT
277 def_bool y if SPARC64
279 config FORCE_MAX_ZONEORDER
280 int "Maximum zone order"
283 The kernel memory allocator divides physically contiguous memory
284 blocks into "zones", where each zone is a power of two number of
285 pages. This option selects the largest power of two that the kernel
286 keeps in the memory allocator. If you need to allocate very large
287 blocks of physically contiguous memory, then you may need to
290 This config option is actually maximum order plus one. For example,
291 a value of 13 means that the largest free memory block is 2^12 pages.
294 source "kernel/power/Kconfig"
298 bool "SMT (Hyperthreading) scheduler support"
299 depends on SPARC64 && SMP
302 SMT scheduler support improves the CPU scheduler's decision making
303 when dealing with SPARC cpus at a cost of slightly increased overhead
304 in some places. If unsure say N here.
307 bool "Multi-core scheduler support"
308 depends on SPARC64 && SMP
311 Multi-core scheduler support improves the CPU scheduler's decision
312 making when dealing with multi-core CPU chips at a cost of slightly
313 increased overhead in some places. If unsure say N here.
316 bool "Default bootloader kernel arguments"
320 string "Initial kernel command string"
321 depends on CMDLINE_BOOL
322 default "console=ttyS0,9600 root=/dev/sda1"
324 Say Y here if you want to be able to pass default arguments to
325 the kernel. This will be overridden by the bootloader, if you
326 use one (such as SILO). This is most useful if you want to boot
327 a kernel from TFTP, and want default options to be available
328 with having them passed on the command line.
330 NOTE: This option WILL override the PROM bootargs setting!
336 Enable power management and CPU standby features on supported
340 tristate "Sun4m LED driver"
343 This driver toggles the front-panel LED on sun4m systems
344 in a user-specifiable manner. Its state can be probed
345 by reading /proc/led and its blinking mode can be changed
346 via writes to /proc/led
348 config SERIAL_CONSOLE
353 If you say Y here, it will be possible to use a serial port as the
354 system console (the system console is the device which receives all
355 kernel messages and warnings and which allows logins in single user
356 mode). This could be useful if some terminal or printer is connected
359 Even if you say Y here, the currently visible virtual console
360 (/dev/tty0) will still be used as the system console by default, but
361 you can alter that using a kernel command line option such as
362 "console=ttyS1". (Try "man bootparam" or see the documentation of
363 your boot loader (silo) about how to pass options to the kernel at
366 If you don't have a graphics card installed and you say Y here, the
367 kernel will automatically use the first serial line, /dev/ttyS0, as
373 bool "Sparc Leon processor family"
375 select USB_EHCI_BIG_ENDIAN_MMIO
376 select USB_EHCI_BIG_ENDIAN_DESC
377 select USB_UHCI_BIG_ENDIAN_MMIO
378 select USB_UHCI_BIG_ENDIAN_DESC
380 If you say Y here if you are running on a SPARC-LEON processor.
381 The LEON processor is a synthesizable VHDL model of the
382 SPARC-v8 standard. LEON is part of the GRLIB collection of
383 IP cores that are distributed under GPL. GRLIB can be downloaded
384 from www.gaisler.com. You can download a sparc-linux cross-compilation
385 toolchain at www.gaisler.com.
388 menu "U-Boot options"
390 config UBOOT_LOAD_ADDR
391 hex "uImage Load Address"
394 U-Boot kernel load address, the address in physical address space
395 where u-boot will place the Linux kernel before booting it.
396 This address is normally the base address of main memory + 0x4000.
398 config UBOOT_FLASH_ADDR
399 hex "uImage.o Load Address"
402 Optional setting only affecting the uImage.o ELF-image used to
403 download the uImage file to the target using a ELF-loader other than
404 U-Boot. It may for example be used to download an uImage to FLASH with
405 the GRMON utility before even starting u-boot.
407 config UBOOT_ENTRY_ADDR
408 hex "uImage Entry Address"
411 Do not change this unless you know what you're doing. This is
412 hardcoded by the SPARC32 and LEON port.
414 This is the virtual address u-boot jumps to when booting the Linux
422 menu "Bus options (PCI etc.)"
432 bool "Sun Logical Domains support"
435 Say Y here is you want to support virtual devices via
440 depends on PCI && SPARC32 && !SPARC_LEON
445 depends on PCI && SPARC_LEON
449 bool "GRPCI Host Bridge Support"
453 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
454 PCI host controller is typically found in GRLIB SPARC32/LEON
455 systems. The driver has one property (all_pci_errors) controlled
456 from the bootloader that makes the GRPCI to generate interrupts
457 on detected PCI Parity and System errors.
460 bool "GRPCI2 Host Bridge Support"
464 Say Y here to include the GRPCI2 Host Bridge Driver.
466 config SUN_OPENPROMFS
467 tristate "Openprom tree appears in /proc/openprom"
469 If you say Y, the OpenPROM device tree will be available as a
470 virtual file system, which you can mount to /proc/openprom by "mount
471 -t openpromfs none /proc/openprom".
473 To compile the /proc/openprom support as a module, choose M here: the
474 module will be called openpromfs.
476 Only choose N if you know in advance that you will not need to modify
477 OpenPROM settings on the running system.
483 depends on SPARC64 && PCI
485 config SPARC64_PCI_MSI
488 depends on SPARC64_PCI && PCI_MSI
497 select ARCH_WANT_OLD_COMPAT_IPC
498 select COMPAT_OLD_SIGACTION
500 config SYSVIPC_COMPAT
502 depends on COMPAT && SYSVIPC
505 source "drivers/sbus/char/Kconfig"