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_HARDIRQS_NO_DEPRECATED
58 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
59 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
61 # CONFIG_BITS can be used at source level to get 32/64 bits
67 config ARCH_USES_GETTIMEOFFSET
71 config GENERIC_CMOS_UPDATE
75 config GENERIC_CLOCKEVENTS
87 config STACKTRACE_SUPPORT
91 config LOCKDEP_SUPPORT
95 config HAVE_LATENCYTOP_SUPPORT
103 config HAVE_SETUP_PER_CPU_AREA
104 def_bool y if SPARC64
106 config NEED_PER_CPU_EMBED_FIRST_CHUNK
107 def_bool y if SPARC64
109 config NEED_PER_CPU_PAGE_FIRST_CHUNK
110 def_bool y if SPARC64
124 config NEED_DMA_MAP_STATE
127 config NEED_SG_DMA_LENGTH
130 config GENERIC_ISA_DMA
137 Generic GPIO API support
139 config ARCH_NO_VIRT_TO_BUS
142 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
143 def_bool y if SPARC64
145 source "init/Kconfig"
147 source "kernel/Kconfig.freezer"
149 menu "Processor type and features"
152 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
154 This enables support for systems with more than one CPU. If you have
155 a system with only one CPU, say N. If you have a system with more
158 If you say N here, the kernel will run on single and multiprocessor
159 machines, but will use only one CPU of a multiprocessor machine. If
160 you say Y here, the kernel will run on many, but not all,
161 singleprocessor machines. On a singleprocessor machine, the kernel
162 will run faster if you say N here.
164 People using multiprocessor machines who say Y here should also say
165 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
166 Management" code will be disabled if you say Y here.
168 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
169 available at <http://www.tldp.org/docs.html#howto>.
171 If you don't know what to do here, say N.
174 int "Maximum number of CPUs"
176 range 2 32 if SPARC32
177 range 2 1024 if SPARC64
178 default 32 if SPARC32
179 default 64 if SPARC64
181 source kernel/Kconfig.hz
183 config RWSEM_GENERIC_SPINLOCK
187 config RWSEM_XCHGADD_ALGORITHM
191 config GENERIC_FIND_NEXT_BIT
195 config GENERIC_HWEIGHT
197 default y if !ULTRA_HAS_POPULATION_COUNT
199 config GENERIC_CALIBRATE_DELAY
203 config ARCH_MAY_HAVE_PC_FDC
207 config EMULATED_CMPXCHG
211 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
212 is emulated, and therefore it is not completely atomic.
218 depends on SPARC32 && SMP
223 depends on SPARC64 && SMP
226 bool "Support for early boot text console"
230 Say Y here to enable a faster early framebuffer boot console.
233 prompt "Kernel page size" if SPARC64
234 default SPARC64_PAGE_SIZE_8KB
236 config SPARC64_PAGE_SIZE_8KB
239 This lets you select the page size of the kernel.
241 8KB and 64KB work quite well, since SPARC ELF sections
242 provide for up to 64KB alignment.
244 If you don't know what to do, choose 8KB.
246 config SPARC64_PAGE_SIZE_64KB
252 bool "Enable seccomp to safely compute untrusted bytecode"
253 depends on SPARC64 && PROC_FS
256 This kernel feature is useful for number crunching applications
257 that may need to compute untrusted bytecode during their
258 execution. By using pipes or other transports made available to
259 the process as file descriptors supporting the read/write
260 syscalls, it's possible to isolate those applications in
261 their own address space using seccomp. Once seccomp is
262 enabled via /proc/<pid>/seccomp, it cannot be disabled
263 and the task is only allowed to execute a few safe syscalls
264 defined by each seccomp mode.
266 If unsure, say Y. Only embedded should say N here.
269 bool "Support for hot-pluggable CPUs"
270 depends on SPARC64 && SMP
273 Say Y here to experiment with turning CPUs off and on. CPUs
274 can be controlled through /sys/devices/system/cpu/cpu#.
275 Say N if you want to disable CPU hotplug.
277 source "kernel/time/Kconfig"
280 source "drivers/cpufreq/Kconfig"
283 tristate "UltraSPARC-III CPU Frequency driver"
285 select CPU_FREQ_TABLE
287 This adds the CPUFreq driver for UltraSPARC-III processors.
289 For details, take a look at <file:Documentation/cpu-freq>.
294 tristate "UltraSPARC-IIe CPU Frequency driver"
296 select CPU_FREQ_TABLE
298 This adds the CPUFreq driver for UltraSPARC-IIe processors.
300 For details, take a look at <file:Documentation/cpu-freq>.
307 tristate "UltraSPARC-III Memory Controller driver"
311 This adds a driver for the UltraSPARC-III memory controller.
312 Loading this driver allows exact mnemonic strings to be
313 printed in the event of a memory error, so that the faulty DIMM
314 on the motherboard can be matched to the error.
316 If in doubt, say Y, as this information can be very useful.
318 # Global things across all Sun machines.
319 config GENERIC_LOCKBREAK
322 depends on SPARC64 && SMP && PREEMPT
325 prompt "SPARC64 Huge TLB Page Size"
326 depends on SPARC64 && HUGETLB_PAGE
327 default HUGETLB_PAGE_SIZE_4MB
329 config HUGETLB_PAGE_SIZE_4MB
332 config HUGETLB_PAGE_SIZE_512K
335 config HUGETLB_PAGE_SIZE_64K
336 depends on !SPARC64_PAGE_SIZE_64KB
343 depends on SPARC64 && SMP
348 depends on NEED_MULTIPLE_NODES
350 # Some NUMA nodes have memory ranges that span
351 # other nodes. Even though a pfn is valid and
352 # between a node's start and end pfns, it may not
353 # reside on that node. See memmap_init_zone()
355 config NODES_SPAN_OTHER_NODES
357 depends on NEED_MULTIPLE_NODES
359 config ARCH_POPULATES_NODE_MAP
360 def_bool y if SPARC64
362 config ARCH_SELECT_MEMORY_MODEL
363 def_bool y if SPARC64
365 config ARCH_SPARSEMEM_ENABLE
366 def_bool y if SPARC64
367 select SPARSEMEM_VMEMMAP_ENABLE
369 config ARCH_SPARSEMEM_DEFAULT
370 def_bool y if SPARC64
375 bool "SMT (Hyperthreading) scheduler support"
376 depends on SPARC64 && SMP
379 SMT scheduler support improves the CPU scheduler's decision making
380 when dealing with SPARC cpus at a cost of slightly increased overhead
381 in some places. If unsure say N here.
384 bool "Multi-core scheduler support"
385 depends on SPARC64 && SMP
388 Multi-core scheduler support improves the CPU scheduler's decision
389 making when dealing with multi-core CPU chips at a cost of slightly
390 increased overhead in some places. If unsure say N here.
393 source "kernel/Kconfig.preempt"
397 bool "Default bootloader kernel arguments"
401 string "Initial kernel command string"
402 depends on CMDLINE_BOOL
403 default "console=ttyS0,9600 root=/dev/sda1"
405 Say Y here if you want to be able to pass default arguments to
406 the kernel. This will be overridden by the bootloader, if you
407 use one (such as SILO). This is most useful if you want to boot
408 a kernel from TFTP, and want default options to be available
409 with having them passed on the command line.
411 NOTE: This option WILL override the PROM bootargs setting!
417 Enable power management and CPU standby features on supported
421 tristate "Sun4m LED driver"
424 This driver toggles the front-panel LED on sun4m systems
425 in a user-specifiable manner. Its state can be probed
426 by reading /proc/led and its blinking mode can be changed
427 via writes to /proc/led
429 config SERIAL_CONSOLE
434 If you say Y here, it will be possible to use a serial port as the
435 system console (the system console is the device which receives all
436 kernel messages and warnings and which allows logins in single user
437 mode). This could be useful if some terminal or printer is connected
440 Even if you say Y here, the currently visible virtual console
441 (/dev/tty0) will still be used as the system console by default, but
442 you can alter that using a kernel command line option such as
443 "console=ttyS1". (Try "man bootparam" or see the documentation of
444 your boot loader (silo) about how to pass options to the kernel at
447 If you don't have a graphics card installed and you say Y here, the
448 kernel will automatically use the first serial line, /dev/ttyS0, as
454 bool "Sparc Leon processor family"
457 If you say Y here if you are running on a SPARC-LEON processor.
458 The LEON processor is a synthesizable VHDL model of the
459 SPARC-v8 standard. LEON is part of the GRLIB collection of
460 IP cores that are distributed under GPL. GRLIB can be downloaded
461 from www.gaisler.com. You can download a sparc-linux cross-compilation
462 toolchain at www.gaisler.com.
465 menu "U-Boot options"
467 config UBOOT_LOAD_ADDR
468 hex "uImage Load Address"
471 U-Boot kernel load address, the address in physical address space
472 where u-boot will place the Linux kernel before booting it.
473 This address is normally the base address of main memory + 0x4000.
475 config UBOOT_FLASH_ADDR
476 hex "uImage.o Load Address"
479 Optional setting only affecting the uImage.o ELF-image used to
480 download the uImage file to the target using a ELF-loader other than
481 U-Boot. It may for example be used to download an uImage to FLASH with
482 the GRMON utility before even starting u-boot.
484 config UBOOT_ENTRY_ADDR
485 hex "uImage Entry Address"
488 Do not change this unless you know what you're doing. This is
489 hardcoded by the SPARC32 and LEON port.
491 This is the virtual address u-boot jumps to when booting the Linux
499 menu "Bus options (PCI etc.)"
509 bool "Sun Logical Domains support"
512 Say Y here is you want to support virtual devices via
516 bool "Support for PCI and PS/2 keyboard/mouse"
518 Find out whether your system includes a PCI bus. PCI is the name of
519 a bus system, i.e. the way the CPU talks to the other stuff inside
520 your box. If you say Y here, the kernel will include drivers and
521 infrastructure code to support PCI bus devices.
523 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
524 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
525 All of these platforms are extremely obscure, so say N if unsure.
528 def_bool PCI if SPARC64
533 source "drivers/pci/Kconfig"
535 source "drivers/pcmcia/Kconfig"
537 config SUN_OPENPROMFS
538 tristate "Openprom tree appears in /proc/openprom"
540 If you say Y, the OpenPROM device tree will be available as a
541 virtual file system, which you can mount to /proc/openprom by "mount
542 -t openpromfs none /proc/openprom".
544 To compile the /proc/openprom support as a module, choose M here: the
545 module will be called openpromfs.
547 Only choose N if you know in advance that you will not need to modify
548 OpenPROM settings on the running system.
554 depends on SPARC32 && PCI
559 depends on SPARC64 && PCI
563 menu "Executable file formats"
565 source "fs/Kconfig.binfmt"
571 select COMPAT_BINFMT_ELF
573 config SYSVIPC_COMPAT
575 depends on COMPAT && SYSVIPC
582 source "drivers/Kconfig"
584 source "drivers/sbus/char/Kconfig"
588 source "arch/sparc/Kconfig.debug"
590 source "security/Kconfig"
592 source "crypto/Kconfig"