2 bool "64-bit kernel" if ARCH = "sparc"
3 default ARCH = "sparc64"
5 SPARC is a family of RISC microprocessors designed and marketed by
6 Sun Microsystems, incorporated. They are very widely found in Sun
7 workstations and clones.
9 Say yes to build a 64-bit kernel - formerly known as sparc64
10 Say no to build a 32-bit kernel - formerly known as sparc
19 select HAVE_ARCH_KGDB if !SMP || SPARC64
20 select HAVE_ARCH_TRACEHOOK
21 select ARCH_WANT_OPTIONAL_GPIOLIB
25 select HAVE_PERF_EVENTS
26 select PERF_USE_VMALLOC
28 select HAVE_DMA_API_DEBUG
29 select HAVE_ARCH_JUMP_LABEL
36 select ARCH_SUPPORTS_MSI
37 select HAVE_FUNCTION_TRACER
38 select HAVE_FUNCTION_GRAPH_TRACER
39 select HAVE_FUNCTION_GRAPH_FP_TEST
40 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
41 select HAVE_KRETPROBES
44 select HAVE_SYSCALL_WRAPPERS
45 select HAVE_DYNAMIC_FTRACE
46 select HAVE_FTRACE_MCOUNT_RECORD
47 select HAVE_SYSCALL_TRACEPOINTS
48 select USE_GENERIC_SMP_HELPERS if SMP
52 select RTC_DRV_STARFIRE
54 select HAVE_PERF_EVENTS
55 select PERF_USE_VMALLOC
59 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
60 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
62 # CONFIG_BITS can be used at source level to get 32/64 bits
68 config ARCH_USES_GETTIMEOFFSET
72 config GENERIC_CMOS_UPDATE
76 config GENERIC_CLOCKEVENTS
88 config STACKTRACE_SUPPORT
92 config LOCKDEP_SUPPORT
96 config HAVE_LATENCYTOP_SUPPORT
104 config HAVE_SETUP_PER_CPU_AREA
105 def_bool y if SPARC64
107 config NEED_PER_CPU_EMBED_FIRST_CHUNK
108 def_bool y if SPARC64
110 config NEED_PER_CPU_PAGE_FIRST_CHUNK
111 def_bool y if SPARC64
113 config GENERIC_HARDIRQS_NO__DO_IRQ
115 def_bool y if SPARC64
129 config NEED_DMA_MAP_STATE
132 config NEED_SG_DMA_LENGTH
135 config GENERIC_ISA_DMA
142 Generic GPIO API support
144 config ARCH_NO_VIRT_TO_BUS
147 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
148 def_bool y if SPARC64
150 source "init/Kconfig"
152 source "kernel/Kconfig.freezer"
154 menu "Processor type and features"
157 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
159 This enables support for systems with more than one CPU. If you have
160 a system with only one CPU, say N. If you have a system with more
163 If you say N here, the kernel will run on single and multiprocessor
164 machines, but will use only one CPU of a multiprocessor machine. If
165 you say Y here, the kernel will run on many, but not all,
166 singleprocessor machines. On a singleprocessor machine, the kernel
167 will run faster if you say N here.
169 People using multiprocessor machines who say Y here should also say
170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
171 Management" code will be disabled if you say Y here.
173 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
174 available at <http://www.tldp.org/docs.html#howto>.
176 If you don't know what to do here, say N.
179 int "Maximum number of CPUs"
181 range 2 32 if SPARC32
182 range 2 1024 if SPARC64
183 default 32 if SPARC32
184 default 64 if SPARC64
186 source kernel/Kconfig.hz
188 config RWSEM_GENERIC_SPINLOCK
192 config RWSEM_XCHGADD_ALGORITHM
196 config GENERIC_FIND_NEXT_BIT
200 config GENERIC_HWEIGHT
202 default y if !ULTRA_HAS_POPULATION_COUNT
204 config GENERIC_CALIBRATE_DELAY
208 config ARCH_MAY_HAVE_PC_FDC
212 config EMULATED_CMPXCHG
216 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
217 is emulated, and therefore it is not completely atomic.
223 depends on SPARC32 && SMP
228 depends on SPARC64 && SMP
231 bool "Support for early boot text console"
235 Say Y here to enable a faster early framebuffer boot console.
238 prompt "Kernel page size" if SPARC64
239 default SPARC64_PAGE_SIZE_8KB
241 config SPARC64_PAGE_SIZE_8KB
244 This lets you select the page size of the kernel.
246 8KB and 64KB work quite well, since SPARC ELF sections
247 provide for up to 64KB alignment.
249 If you don't know what to do, choose 8KB.
251 config SPARC64_PAGE_SIZE_64KB
257 bool "Enable seccomp to safely compute untrusted bytecode"
258 depends on SPARC64 && PROC_FS
261 This kernel feature is useful for number crunching applications
262 that may need to compute untrusted bytecode during their
263 execution. By using pipes or other transports made available to
264 the process as file descriptors supporting the read/write
265 syscalls, it's possible to isolate those applications in
266 their own address space using seccomp. Once seccomp is
267 enabled via /proc/<pid>/seccomp, it cannot be disabled
268 and the task is only allowed to execute a few safe syscalls
269 defined by each seccomp mode.
271 If unsure, say Y. Only embedded should say N here.
274 bool "Support for hot-pluggable CPUs"
275 depends on SPARC64 && SMP
278 Say Y here to experiment with turning CPUs off and on. CPUs
279 can be controlled through /sys/devices/system/cpu/cpu#.
280 Say N if you want to disable CPU hotplug.
282 config GENERIC_HARDIRQS
286 source "kernel/time/Kconfig"
289 source "drivers/cpufreq/Kconfig"
292 tristate "UltraSPARC-III CPU Frequency driver"
294 select CPU_FREQ_TABLE
296 This adds the CPUFreq driver for UltraSPARC-III processors.
298 For details, take a look at <file:Documentation/cpu-freq>.
303 tristate "UltraSPARC-IIe CPU Frequency driver"
305 select CPU_FREQ_TABLE
307 This adds the CPUFreq driver for UltraSPARC-IIe processors.
309 For details, take a look at <file:Documentation/cpu-freq>.
316 tristate "UltraSPARC-III Memory Controller driver"
320 This adds a driver for the UltraSPARC-III memory controller.
321 Loading this driver allows exact mnemonic strings to be
322 printed in the event of a memory error, so that the faulty DIMM
323 on the motherboard can be matched to the error.
325 If in doubt, say Y, as this information can be very useful.
327 # Global things across all Sun machines.
328 config GENERIC_LOCKBREAK
331 depends on SPARC64 && SMP && PREEMPT
334 prompt "SPARC64 Huge TLB Page Size"
335 depends on SPARC64 && HUGETLB_PAGE
336 default HUGETLB_PAGE_SIZE_4MB
338 config HUGETLB_PAGE_SIZE_4MB
341 config HUGETLB_PAGE_SIZE_512K
344 config HUGETLB_PAGE_SIZE_64K
345 depends on !SPARC64_PAGE_SIZE_64KB
352 depends on SPARC64 && SMP
357 depends on NEED_MULTIPLE_NODES
359 # Some NUMA nodes have memory ranges that span
360 # other nodes. Even though a pfn is valid and
361 # between a node's start and end pfns, it may not
362 # reside on that node. See memmap_init_zone()
364 config NODES_SPAN_OTHER_NODES
366 depends on NEED_MULTIPLE_NODES
368 config ARCH_POPULATES_NODE_MAP
369 def_bool y if SPARC64
371 config ARCH_SELECT_MEMORY_MODEL
372 def_bool y if SPARC64
374 config ARCH_SPARSEMEM_ENABLE
375 def_bool y if SPARC64
376 select SPARSEMEM_VMEMMAP_ENABLE
378 config ARCH_SPARSEMEM_DEFAULT
379 def_bool y if SPARC64
384 bool "SMT (Hyperthreading) scheduler support"
385 depends on SPARC64 && SMP
388 SMT scheduler support improves the CPU scheduler's decision making
389 when dealing with SPARC cpus at a cost of slightly increased overhead
390 in some places. If unsure say N here.
393 bool "Multi-core scheduler support"
394 depends on SPARC64 && SMP
397 Multi-core scheduler support improves the CPU scheduler's decision
398 making when dealing with multi-core CPU chips at a cost of slightly
399 increased overhead in some places. If unsure say N here.
402 source "kernel/Kconfig.preempt"
406 bool "Default bootloader kernel arguments"
410 string "Initial kernel command string"
411 depends on CMDLINE_BOOL
412 default "console=ttyS0,9600 root=/dev/sda1"
414 Say Y here if you want to be able to pass default arguments to
415 the kernel. This will be overridden by the bootloader, if you
416 use one (such as SILO). This is most useful if you want to boot
417 a kernel from TFTP, and want default options to be available
418 with having them passed on the command line.
420 NOTE: This option WILL override the PROM bootargs setting!
426 Enable power management and CPU standby features on supported
430 tristate "Sun4m LED driver"
433 This driver toggles the front-panel LED on sun4m systems
434 in a user-specifiable manner. Its state can be probed
435 by reading /proc/led and its blinking mode can be changed
436 via writes to /proc/led
438 config SERIAL_CONSOLE
443 If you say Y here, it will be possible to use a serial port as the
444 system console (the system console is the device which receives all
445 kernel messages and warnings and which allows logins in single user
446 mode). This could be useful if some terminal or printer is connected
449 Even if you say Y here, the currently visible virtual console
450 (/dev/tty0) will still be used as the system console by default, but
451 you can alter that using a kernel command line option such as
452 "console=ttyS1". (Try "man bootparam" or see the documentation of
453 your boot loader (silo) about how to pass options to the kernel at
456 If you don't have a graphics card installed and you say Y here, the
457 kernel will automatically use the first serial line, /dev/ttyS0, as
463 bool "Sparc Leon processor family"
466 If you say Y here if you are running on a SPARC-LEON processor.
467 The LEON processor is a synthesizable VHDL model of the
468 SPARC-v8 standard. LEON is part of the GRLIB collection of
469 IP cores that are distributed under GPL. GRLIB can be downloaded
470 from www.gaisler.com. You can download a sparc-linux cross-compilation
471 toolchain at www.gaisler.com.
475 menu "Bus options (PCI etc.)"
485 bool "Sun Logical Domains support"
488 Say Y here is you want to support virtual devices via
492 bool "Support for PCI and PS/2 keyboard/mouse"
494 Find out whether your system includes a PCI bus. PCI is the name of
495 a bus system, i.e. the way the CPU talks to the other stuff inside
496 your box. If you say Y here, the kernel will include drivers and
497 infrastructure code to support PCI bus devices.
499 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
500 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
501 All of these platforms are extremely obscure, so say N if unsure.
504 def_bool PCI if SPARC64
509 source "drivers/pci/Kconfig"
511 source "drivers/pcmcia/Kconfig"
513 config SUN_OPENPROMFS
514 tristate "Openprom tree appears in /proc/openprom"
516 If you say Y, the OpenPROM device tree will be available as a
517 virtual file system, which you can mount to /proc/openprom by "mount
518 -t openpromfs none /proc/openprom".
520 To compile the /proc/openprom support as a module, choose M here: the
521 module will be called openpromfs.
523 Only choose N if you know in advance that you will not need to modify
524 OpenPROM settings on the running system.
530 depends on SPARC32 && PCI
535 depends on SPARC64 && PCI
539 menu "Executable file formats"
541 source "fs/Kconfig.binfmt"
547 select COMPAT_BINFMT_ELF
549 config SYSVIPC_COMPAT
551 depends on COMPAT && SYSVIPC
558 source "drivers/Kconfig"
560 source "drivers/sbus/char/Kconfig"
564 source "arch/sparc/Kconfig.debug"
566 source "security/Kconfig"
568 source "crypto/Kconfig"