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
26 select HAVE_DMA_API_DEBUG
27 select HAVE_ARCH_JUMP_LABEL
34 select ARCH_SUPPORTS_MSI
35 select HAVE_FUNCTION_TRACER
36 select HAVE_FUNCTION_GRAPH_TRACER
37 select HAVE_FUNCTION_GRAPH_FP_TEST
38 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
39 select HAVE_KRETPROBES
42 select HAVE_SYSCALL_WRAPPERS
43 select HAVE_DYNAMIC_FTRACE
44 select HAVE_FTRACE_MCOUNT_RECORD
45 select HAVE_SYSCALL_TRACEPOINTS
46 select USE_GENERIC_SMP_HELPERS if SMP
50 select RTC_DRV_STARFIRE
51 select HAVE_PERF_EVENTS
52 select PERF_USE_VMALLOC
53 select HAVE_GENERIC_HARDIRQS
54 select GENERIC_IRQ_SHOW
55 select IRQ_PREFLOW_FASTEOI
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
125 config NEED_DMA_MAP_STATE
128 config NEED_SG_DMA_LENGTH
131 config GENERIC_ISA_DMA
138 Generic GPIO API support
140 config ARCH_NO_VIRT_TO_BUS
143 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
144 def_bool y if SPARC64
146 source "init/Kconfig"
148 source "kernel/Kconfig.freezer"
150 menu "Processor type and features"
153 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
155 This enables support for systems with more than one CPU. If you have
156 a system with only one CPU, say N. If you have a system with more
159 If you say N here, the kernel will run on single and multiprocessor
160 machines, but will use only one CPU of a multiprocessor machine. If
161 you say Y here, the kernel will run on many, but not all,
162 singleprocessor machines. On a singleprocessor machine, the kernel
163 will run faster if you say N here.
165 People using multiprocessor machines who say Y here should also say
166 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
167 Management" code will be disabled if you say Y here.
169 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
170 available at <http://www.tldp.org/docs.html#howto>.
172 If you don't know what to do here, say N.
175 int "Maximum number of CPUs"
177 range 2 32 if SPARC32
178 range 2 1024 if SPARC64
179 default 32 if SPARC32
180 default 64 if SPARC64
182 source kernel/Kconfig.hz
184 config RWSEM_GENERIC_SPINLOCK
188 config RWSEM_XCHGADD_ALGORITHM
192 config GENERIC_FIND_NEXT_BIT
196 config GENERIC_FIND_BIT_LE
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 source "kernel/time/Kconfig"
285 source "drivers/cpufreq/Kconfig"
288 tristate "UltraSPARC-III CPU Frequency driver"
290 select CPU_FREQ_TABLE
292 This adds the CPUFreq driver for UltraSPARC-III processors.
294 For details, take a look at <file:Documentation/cpu-freq>.
299 tristate "UltraSPARC-IIe CPU Frequency driver"
301 select CPU_FREQ_TABLE
303 This adds the CPUFreq driver for UltraSPARC-IIe processors.
305 For details, take a look at <file:Documentation/cpu-freq>.
312 tristate "UltraSPARC-III Memory Controller driver"
316 This adds a driver for the UltraSPARC-III memory controller.
317 Loading this driver allows exact mnemonic strings to be
318 printed in the event of a memory error, so that the faulty DIMM
319 on the motherboard can be matched to the error.
321 If in doubt, say Y, as this information can be very useful.
323 # Global things across all Sun machines.
324 config GENERIC_LOCKBREAK
327 depends on SPARC64 && SMP && PREEMPT
330 prompt "SPARC64 Huge TLB Page Size"
331 depends on SPARC64 && HUGETLB_PAGE
332 default HUGETLB_PAGE_SIZE_4MB
334 config HUGETLB_PAGE_SIZE_4MB
337 config HUGETLB_PAGE_SIZE_512K
340 config HUGETLB_PAGE_SIZE_64K
341 depends on !SPARC64_PAGE_SIZE_64KB
348 depends on SPARC64 && SMP
353 depends on NEED_MULTIPLE_NODES
355 # Some NUMA nodes have memory ranges that span
356 # other nodes. Even though a pfn is valid and
357 # between a node's start and end pfns, it may not
358 # reside on that node. See memmap_init_zone()
360 config NODES_SPAN_OTHER_NODES
362 depends on NEED_MULTIPLE_NODES
364 config ARCH_POPULATES_NODE_MAP
365 def_bool y if SPARC64
367 config ARCH_SELECT_MEMORY_MODEL
368 def_bool y if SPARC64
370 config ARCH_SPARSEMEM_ENABLE
371 def_bool y if SPARC64
372 select SPARSEMEM_VMEMMAP_ENABLE
374 config ARCH_SPARSEMEM_DEFAULT
375 def_bool y if SPARC64
380 bool "SMT (Hyperthreading) scheduler support"
381 depends on SPARC64 && SMP
384 SMT scheduler support improves the CPU scheduler's decision making
385 when dealing with SPARC cpus at a cost of slightly increased overhead
386 in some places. If unsure say N here.
389 bool "Multi-core scheduler support"
390 depends on SPARC64 && SMP
393 Multi-core scheduler support improves the CPU scheduler's decision
394 making when dealing with multi-core CPU chips at a cost of slightly
395 increased overhead in some places. If unsure say N here.
398 source "kernel/Kconfig.preempt"
402 bool "Default bootloader kernel arguments"
406 string "Initial kernel command string"
407 depends on CMDLINE_BOOL
408 default "console=ttyS0,9600 root=/dev/sda1"
410 Say Y here if you want to be able to pass default arguments to
411 the kernel. This will be overridden by the bootloader, if you
412 use one (such as SILO). This is most useful if you want to boot
413 a kernel from TFTP, and want default options to be available
414 with having them passed on the command line.
416 NOTE: This option WILL override the PROM bootargs setting!
422 Enable power management and CPU standby features on supported
426 tristate "Sun4m LED driver"
429 This driver toggles the front-panel LED on sun4m systems
430 in a user-specifiable manner. Its state can be probed
431 by reading /proc/led and its blinking mode can be changed
432 via writes to /proc/led
434 config SERIAL_CONSOLE
439 If you say Y here, it will be possible to use a serial port as the
440 system console (the system console is the device which receives all
441 kernel messages and warnings and which allows logins in single user
442 mode). This could be useful if some terminal or printer is connected
445 Even if you say Y here, the currently visible virtual console
446 (/dev/tty0) will still be used as the system console by default, but
447 you can alter that using a kernel command line option such as
448 "console=ttyS1". (Try "man bootparam" or see the documentation of
449 your boot loader (silo) about how to pass options to the kernel at
452 If you don't have a graphics card installed and you say Y here, the
453 kernel will automatically use the first serial line, /dev/ttyS0, as
459 bool "Sparc Leon processor family"
462 If you say Y here if you are running on a SPARC-LEON processor.
463 The LEON processor is a synthesizable VHDL model of the
464 SPARC-v8 standard. LEON is part of the GRLIB collection of
465 IP cores that are distributed under GPL. GRLIB can be downloaded
466 from www.gaisler.com. You can download a sparc-linux cross-compilation
467 toolchain at www.gaisler.com.
470 menu "U-Boot options"
472 config UBOOT_LOAD_ADDR
473 hex "uImage Load Address"
476 U-Boot kernel load address, the address in physical address space
477 where u-boot will place the Linux kernel before booting it.
478 This address is normally the base address of main memory + 0x4000.
480 config UBOOT_FLASH_ADDR
481 hex "uImage.o Load Address"
484 Optional setting only affecting the uImage.o ELF-image used to
485 download the uImage file to the target using a ELF-loader other than
486 U-Boot. It may for example be used to download an uImage to FLASH with
487 the GRMON utility before even starting u-boot.
489 config UBOOT_ENTRY_ADDR
490 hex "uImage Entry Address"
493 Do not change this unless you know what you're doing. This is
494 hardcoded by the SPARC32 and LEON port.
496 This is the virtual address u-boot jumps to when booting the Linux
504 menu "Bus options (PCI etc.)"
514 bool "Sun Logical Domains support"
517 Say Y here is you want to support virtual devices via
521 bool "Support for PCI and PS/2 keyboard/mouse"
523 Find out whether your system includes a PCI bus. PCI is the name of
524 a bus system, i.e. the way the CPU talks to the other stuff inside
525 your box. If you say Y here, the kernel will include drivers and
526 infrastructure code to support PCI bus devices.
528 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
529 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
530 All of these platforms are extremely obscure, so say N if unsure.
533 def_bool PCI if SPARC64
538 source "drivers/pci/Kconfig"
540 source "drivers/pcmcia/Kconfig"
542 config SUN_OPENPROMFS
543 tristate "Openprom tree appears in /proc/openprom"
545 If you say Y, the OpenPROM device tree will be available as a
546 virtual file system, which you can mount to /proc/openprom by "mount
547 -t openpromfs none /proc/openprom".
549 To compile the /proc/openprom support as a module, choose M here: the
550 module will be called openpromfs.
552 Only choose N if you know in advance that you will not need to modify
553 OpenPROM settings on the running system.
559 depends on SPARC32 && PCI
564 depends on SPARC64 && PCI
568 menu "Executable file formats"
570 source "fs/Kconfig.binfmt"
576 select COMPAT_BINFMT_ELF
578 config SYSVIPC_COMPAT
580 depends on COMPAT && SYSVIPC
587 source "drivers/Kconfig"
589 source "drivers/sbus/char/Kconfig"
593 source "arch/sparc/Kconfig.debug"
595 source "security/Kconfig"
597 source "crypto/Kconfig"