1 # For a description of the syntax of this configuration file,
2 # see Documentation/kbuild/kconfig-language.txt.
5 mainmenu "Linux/SPARC Kernel Configuration"
8 bool "64-bit kernel" if ARCH = "sparc"
9 default ARCH = "sparc64"
11 SPARC is a family of RISC microprocessors designed and marketed by
12 Sun Microsystems, incorporated. They are very widely found in Sun
13 workstations and clones.
15 Say yes to build a 64-bit kernel - formerly known as sparc64
16 Say no to build a 32-bit kernel - formerly known as sparc
23 select HAVE_ARCH_KGDB if !SMP || SPARC64
24 select HAVE_ARCH_TRACEHOOK
25 select ARCH_WANT_OPTIONAL_GPIOLIB
28 select HAVE_PERF_EVENTS
29 select PERF_USE_VMALLOC
31 select HAVE_DMA_API_DEBUG
38 select ARCH_SUPPORTS_MSI
39 select HAVE_FUNCTION_TRACER
40 select HAVE_FUNCTION_GRAPH_TRACER
41 select HAVE_FUNCTION_GRAPH_FP_TEST
42 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
43 select HAVE_KRETPROBES
46 select HAVE_SYSCALL_WRAPPERS
47 select HAVE_DYNAMIC_FTRACE
48 select HAVE_FTRACE_MCOUNT_RECORD
49 select HAVE_SYSCALL_TRACEPOINTS
50 select USE_GENERIC_SMP_HELPERS if SMP
54 select RTC_DRV_STARFIRE
55 select HAVE_PERF_EVENTS
56 select PERF_USE_VMALLOC
60 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
61 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
63 # CONFIG_BITS can be used at source level to get 32/64 bits
72 config ARCH_USES_GETTIMEOFFSET
76 config GENERIC_CMOS_UPDATE
80 config GENERIC_CLOCKEVENTS
92 config STACKTRACE_SUPPORT
96 config LOCKDEP_SUPPORT
100 config HAVE_LATENCYTOP_SUPPORT
108 config HAVE_SETUP_PER_CPU_AREA
109 def_bool y if SPARC64
111 config NEED_PER_CPU_EMBED_FIRST_CHUNK
112 def_bool y if SPARC64
114 config NEED_PER_CPU_PAGE_FIRST_CHUNK
115 def_bool y if SPARC64
117 config GENERIC_HARDIRQS_NO__DO_IRQ
119 def_bool y if SPARC64
133 config NEED_DMA_MAP_STATE
136 config GENERIC_ISA_DMA
143 Generic GPIO API support
145 config ARCH_NO_VIRT_TO_BUS
151 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
152 def_bool y if SPARC64
154 source "init/Kconfig"
156 source "kernel/Kconfig.freezer"
158 menu "Processor type and features"
161 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
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 single 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 singleprocessor machines. On a singleprocessor 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/nmi_watchdog.txt> and the SMP-HOWTO
178 available at <http://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 1024 if SPARC64
187 default 32 if SPARC32
188 default 64 if SPARC64
190 source kernel/Kconfig.hz
192 config RWSEM_GENERIC_SPINLOCK
196 config RWSEM_XCHGADD_ALGORITHM
200 config GENERIC_FIND_NEXT_BIT
204 config GENERIC_HWEIGHT
206 default y if !ULTRA_HAS_POPULATION_COUNT
208 config GENERIC_CALIBRATE_DELAY
212 config ARCH_MAY_HAVE_PC_FDC
216 config EMULATED_CMPXCHG
220 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
221 is emulated, and therefore it is not completely atomic.
227 depends on SPARC32 && SMP
232 depends on SPARC64 && SMP
235 bool "Support for early boot text console"
239 Say Y here to enable a faster early framebuffer boot console.
242 prompt "Kernel page size" if SPARC64
243 default SPARC64_PAGE_SIZE_8KB
245 config SPARC64_PAGE_SIZE_8KB
248 This lets you select the page size of the kernel.
250 8KB and 64KB work quite well, since SPARC ELF sections
251 provide for up to 64KB alignment.
253 If you don't know what to do, choose 8KB.
255 config SPARC64_PAGE_SIZE_64KB
261 bool "Enable seccomp to safely compute untrusted bytecode"
262 depends on SPARC64 && PROC_FS
265 This kernel feature is useful for number crunching applications
266 that may need to compute untrusted bytecode during their
267 execution. By using pipes or other transports made available to
268 the process as file descriptors supporting the read/write
269 syscalls, it's possible to isolate those applications in
270 their own address space using seccomp. Once seccomp is
271 enabled via /proc/<pid>/seccomp, it cannot be disabled
272 and the task is only allowed to execute a few safe syscalls
273 defined by each seccomp mode.
275 If unsure, say Y. Only embedded should say N here.
278 bool "Support for hot-pluggable CPUs"
279 depends on SPARC64 && SMP
282 Say Y here to experiment with turning CPUs off and on. CPUs
283 can be controlled through /sys/devices/system/cpu/cpu#.
284 Say N if you want to disable CPU hotplug.
286 config GENERIC_HARDIRQS
290 source "kernel/time/Kconfig"
293 source "drivers/cpufreq/Kconfig"
296 tristate "UltraSPARC-III CPU Frequency driver"
298 select CPU_FREQ_TABLE
300 This adds the CPUFreq driver for UltraSPARC-III processors.
302 For details, take a look at <file:Documentation/cpu-freq>.
307 tristate "UltraSPARC-IIe CPU Frequency driver"
309 select CPU_FREQ_TABLE
311 This adds the CPUFreq driver for UltraSPARC-IIe processors.
313 For details, take a look at <file:Documentation/cpu-freq>.
320 tristate "UltraSPARC-III Memory Controller driver"
324 This adds a driver for the UltraSPARC-III memory controller.
325 Loading this driver allows exact mnemonic strings to be
326 printed in the event of a memory error, so that the faulty DIMM
327 on the motherboard can be matched to the error.
329 If in doubt, say Y, as this information can be very useful.
331 # Global things across all Sun machines.
332 config GENERIC_LOCKBREAK
335 depends on SPARC64 && SMP && PREEMPT
338 prompt "SPARC64 Huge TLB Page Size"
339 depends on SPARC64 && HUGETLB_PAGE
340 default HUGETLB_PAGE_SIZE_4MB
342 config HUGETLB_PAGE_SIZE_4MB
345 config HUGETLB_PAGE_SIZE_512K
348 config HUGETLB_PAGE_SIZE_64K
349 depends on !SPARC64_PAGE_SIZE_64KB
356 depends on SPARC64 && SMP
361 depends on NEED_MULTIPLE_NODES
363 # Some NUMA nodes have memory ranges that span
364 # other nodes. Even though a pfn is valid and
365 # between a node's start and end pfns, it may not
366 # reside on that node. See memmap_init_zone()
368 config NODES_SPAN_OTHER_NODES
370 depends on NEED_MULTIPLE_NODES
372 config ARCH_POPULATES_NODE_MAP
373 def_bool y if SPARC64
375 config ARCH_SELECT_MEMORY_MODEL
376 def_bool y if SPARC64
378 config ARCH_SPARSEMEM_ENABLE
379 def_bool y if SPARC64
380 select SPARSEMEM_VMEMMAP_ENABLE
382 config ARCH_SPARSEMEM_DEFAULT
383 def_bool y if SPARC64
388 bool "SMT (Hyperthreading) scheduler support"
389 depends on SPARC64 && SMP
392 SMT scheduler support improves the CPU scheduler's decision making
393 when dealing with SPARC cpus at a cost of slightly increased overhead
394 in some places. If unsure say N here.
397 bool "Multi-core scheduler support"
398 depends on SPARC64 && SMP
401 Multi-core scheduler support improves the CPU scheduler's decision
402 making when dealing with multi-core CPU chips at a cost of slightly
403 increased overhead in some places. If unsure say N here.
406 source "kernel/Kconfig.preempt"
410 bool "Default bootloader kernel arguments"
414 string "Initial kernel command string"
415 depends on CMDLINE_BOOL
416 default "console=ttyS0,9600 root=/dev/sda1"
418 Say Y here if you want to be able to pass default arguments to
419 the kernel. This will be overridden by the bootloader, if you
420 use one (such as SILO). This is most useful if you want to boot
421 a kernel from TFTP, and want default options to be available
422 with having them passed on the command line.
424 NOTE: This option WILL override the PROM bootargs setting!
430 Enable power management and CPU standby features on supported
434 tristate "Sun4m LED driver"
437 This driver toggles the front-panel LED on sun4m systems
438 in a user-specifiable manner. Its state can be probed
439 by reading /proc/led and its blinking mode can be changed
440 via writes to /proc/led
442 config SERIAL_CONSOLE
447 If you say Y here, it will be possible to use a serial port as the
448 system console (the system console is the device which receives all
449 kernel messages and warnings and which allows logins in single user
450 mode). This could be useful if some terminal or printer is connected
453 Even if you say Y here, the currently visible virtual console
454 (/dev/tty0) will still be used as the system console by default, but
455 you can alter that using a kernel command line option such as
456 "console=ttyS1". (Try "man bootparam" or see the documentation of
457 your boot loader (silo) about how to pass options to the kernel at
460 If you don't have a graphics card installed and you say Y here, the
461 kernel will automatically use the first serial line, /dev/ttyS0, as
467 bool "Sparc Leon processor family"
470 If you say Y here if you are running on a SPARC-LEON processor.
471 The LEON processor is a synthesizable VHDL model of the
472 SPARC-v8 standard. LEON is part of the GRLIB collection of
473 IP cores that are distributed under GPL. GRLIB can be downloaded
474 from www.gaisler.com. You can download a sparc-linux cross-compilation
475 toolchain at www.gaisler.com.
479 menu "Bus options (PCI etc.)"
489 bool "Sun Logical Domains support"
492 Say Y here is you want to support virtual devices via
496 bool "Support for PCI and PS/2 keyboard/mouse"
498 Find out whether your system includes a PCI bus. PCI is the name of
499 a bus system, i.e. the way the CPU talks to the other stuff inside
500 your box. If you say Y here, the kernel will include drivers and
501 infrastructure code to support PCI bus devices.
503 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
504 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
505 All of these platforms are extremely obscure, so say N if unsure.
508 def_bool PCI if SPARC64
513 source "drivers/pci/Kconfig"
515 source "drivers/pcmcia/Kconfig"
517 config SUN_OPENPROMFS
518 tristate "Openprom tree appears in /proc/openprom"
520 If you say Y, the OpenPROM device tree will be available as a
521 virtual file system, which you can mount to /proc/openprom by "mount
522 -t openpromfs none /proc/openprom".
524 To compile the /proc/openprom support as a module, choose M here: the
525 module will be called openpromfs.
527 Only choose N if you know in advance that you will not need to modify
528 OpenPROM settings on the running system.
534 depends on SPARC32 && PCI
539 depends on SPARC64 && PCI
543 menu "Executable file formats"
545 source "fs/Kconfig.binfmt"
551 select COMPAT_BINFMT_ELF
553 config SYSVIPC_COMPAT
555 depends on COMPAT && SYSVIPC
562 source "drivers/Kconfig"
564 source "drivers/sbus/char/Kconfig"
568 source "arch/sparc/Kconfig.debug"
570 source "security/Kconfig"
572 source "crypto/Kconfig"