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
28 select HAVE_GENERIC_HARDIRQS
29 select GENERIC_IRQ_SHOW
30 select USE_GENERIC_SMP_HELPERS if SMP
31 select GENERIC_PCI_IOMAP
32 select HAVE_NMI_WATCHDOG if SPARC64
36 select GENERIC_ATOMIC64
41 select ARCH_SUPPORTS_MSI
42 select HAVE_FUNCTION_TRACER
43 select HAVE_FUNCTION_GRAPH_TRACER
44 select HAVE_FUNCTION_GRAPH_FP_TEST
45 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
46 select HAVE_KRETPROBES
48 select HAVE_RCU_TABLE_FREE if SMP
50 select HAVE_MEMBLOCK_NODE_MAP
51 select HAVE_SYSCALL_WRAPPERS
52 select HAVE_DYNAMIC_FTRACE
53 select HAVE_FTRACE_MCOUNT_RECORD
54 select HAVE_SYSCALL_TRACEPOINTS
58 select RTC_DRV_STARFIRE
59 select HAVE_PERF_EVENTS
60 select PERF_USE_VMALLOC
61 select IRQ_PREFLOW_FASTEOI
62 select ARCH_HAVE_NMI_SAFE_CMPXCHG
63 select HAVE_C_RECORDMCOUNT
67 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
68 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
70 # CONFIG_BITS can be used at source level to get 32/64 bits
76 config ARCH_USES_GETTIMEOFFSET
80 config GENERIC_CMOS_UPDATE
84 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
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_HWEIGHT
198 default y if !ULTRA_HAS_POPULATION_COUNT
200 config GENERIC_CALIBRATE_DELAY
204 config ARCH_MAY_HAVE_PC_FDC
208 config EMULATED_CMPXCHG
212 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
213 is emulated, and therefore it is not completely atomic.
219 depends on SPARC32 && SMP
224 depends on SPARC64 && SMP
227 bool "Support for early boot text console"
231 Say Y here to enable a faster early framebuffer boot console.
234 prompt "Kernel page size" if SPARC64
235 default SPARC64_PAGE_SIZE_8KB
237 config SPARC64_PAGE_SIZE_8KB
240 This lets you select the page size of the kernel.
242 8KB and 64KB work quite well, since SPARC ELF sections
243 provide for up to 64KB alignment.
245 If you don't know what to do, choose 8KB.
247 config SPARC64_PAGE_SIZE_64KB
253 bool "Enable seccomp to safely compute untrusted bytecode"
254 depends on SPARC64 && PROC_FS
257 This kernel feature is useful for number crunching applications
258 that may need to compute untrusted bytecode during their
259 execution. By using pipes or other transports made available to
260 the process as file descriptors supporting the read/write
261 syscalls, it's possible to isolate those applications in
262 their own address space using seccomp. Once seccomp is
263 enabled via /proc/<pid>/seccomp, it cannot be disabled
264 and the task is only allowed to execute a few safe syscalls
265 defined by each seccomp mode.
267 If unsure, say Y. Only embedded should say N here.
270 bool "Support for hot-pluggable CPUs"
271 depends on SPARC64 && SMP
274 Say Y here to experiment with turning CPUs off and on. CPUs
275 can be controlled through /sys/devices/system/cpu/cpu#.
276 Say N if you want to disable CPU hotplug.
278 source "kernel/time/Kconfig"
281 source "drivers/cpufreq/Kconfig"
284 tristate "UltraSPARC-III CPU Frequency driver"
286 select CPU_FREQ_TABLE
288 This adds the CPUFreq driver for UltraSPARC-III processors.
290 For details, take a look at <file:Documentation/cpu-freq>.
295 tristate "UltraSPARC-IIe CPU Frequency driver"
297 select CPU_FREQ_TABLE
299 This adds the CPUFreq driver for UltraSPARC-IIe processors.
301 For details, take a look at <file:Documentation/cpu-freq>.
308 tristate "UltraSPARC-III Memory Controller driver"
312 This adds a driver for the UltraSPARC-III memory controller.
313 Loading this driver allows exact mnemonic strings to be
314 printed in the event of a memory error, so that the faulty DIMM
315 on the motherboard can be matched to the error.
317 If in doubt, say Y, as this information can be very useful.
319 # Global things across all Sun machines.
320 config GENERIC_LOCKBREAK
323 depends on SPARC64 && SMP && PREEMPT
326 prompt "SPARC64 Huge TLB Page Size"
327 depends on SPARC64 && HUGETLB_PAGE
328 default HUGETLB_PAGE_SIZE_4MB
330 config HUGETLB_PAGE_SIZE_4MB
333 config HUGETLB_PAGE_SIZE_512K
336 config HUGETLB_PAGE_SIZE_64K
337 depends on !SPARC64_PAGE_SIZE_64KB
344 depends on SPARC64 && SMP
349 depends on NEED_MULTIPLE_NODES
351 # Some NUMA nodes have memory ranges that span
352 # other nodes. Even though a pfn is valid and
353 # between a node's start and end pfns, it may not
354 # reside on that node. See memmap_init_zone()
356 config NODES_SPAN_OTHER_NODES
358 depends on NEED_MULTIPLE_NODES
360 config ARCH_SELECT_MEMORY_MODEL
361 def_bool y if SPARC64
363 config ARCH_SPARSEMEM_ENABLE
364 def_bool y if SPARC64
365 select SPARSEMEM_VMEMMAP_ENABLE
367 config ARCH_SPARSEMEM_DEFAULT
368 def_bool y if SPARC64
373 bool "SMT (Hyperthreading) scheduler support"
374 depends on SPARC64 && SMP
377 SMT scheduler support improves the CPU scheduler's decision making
378 when dealing with SPARC cpus at a cost of slightly increased overhead
379 in some places. If unsure say N here.
382 bool "Multi-core scheduler support"
383 depends on SPARC64 && SMP
386 Multi-core scheduler support improves the CPU scheduler's decision
387 making when dealing with multi-core CPU chips at a cost of slightly
388 increased overhead in some places. If unsure say N here.
390 source "kernel/Kconfig.preempt"
393 bool "Default bootloader kernel arguments"
397 string "Initial kernel command string"
398 depends on CMDLINE_BOOL
399 default "console=ttyS0,9600 root=/dev/sda1"
401 Say Y here if you want to be able to pass default arguments to
402 the kernel. This will be overridden by the bootloader, if you
403 use one (such as SILO). This is most useful if you want to boot
404 a kernel from TFTP, and want default options to be available
405 with having them passed on the command line.
407 NOTE: This option WILL override the PROM bootargs setting!
413 Enable power management and CPU standby features on supported
417 tristate "Sun4m LED driver"
420 This driver toggles the front-panel LED on sun4m systems
421 in a user-specifiable manner. Its state can be probed
422 by reading /proc/led and its blinking mode can be changed
423 via writes to /proc/led
425 config SERIAL_CONSOLE
430 If you say Y here, it will be possible to use a serial port as the
431 system console (the system console is the device which receives all
432 kernel messages and warnings and which allows logins in single user
433 mode). This could be useful if some terminal or printer is connected
436 Even if you say Y here, the currently visible virtual console
437 (/dev/tty0) will still be used as the system console by default, but
438 you can alter that using a kernel command line option such as
439 "console=ttyS1". (Try "man bootparam" or see the documentation of
440 your boot loader (silo) about how to pass options to the kernel at
443 If you don't have a graphics card installed and you say Y here, the
444 kernel will automatically use the first serial line, /dev/ttyS0, as
450 bool "Sparc Leon processor family"
453 If you say Y here if you are running on a SPARC-LEON processor.
454 The LEON processor is a synthesizable VHDL model of the
455 SPARC-v8 standard. LEON is part of the GRLIB collection of
456 IP cores that are distributed under GPL. GRLIB can be downloaded
457 from www.gaisler.com. You can download a sparc-linux cross-compilation
458 toolchain at www.gaisler.com.
461 menu "U-Boot options"
463 config UBOOT_LOAD_ADDR
464 hex "uImage Load Address"
467 U-Boot kernel load address, the address in physical address space
468 where u-boot will place the Linux kernel before booting it.
469 This address is normally the base address of main memory + 0x4000.
471 config UBOOT_FLASH_ADDR
472 hex "uImage.o Load Address"
475 Optional setting only affecting the uImage.o ELF-image used to
476 download the uImage file to the target using a ELF-loader other than
477 U-Boot. It may for example be used to download an uImage to FLASH with
478 the GRMON utility before even starting u-boot.
480 config UBOOT_ENTRY_ADDR
481 hex "uImage Entry Address"
484 Do not change this unless you know what you're doing. This is
485 hardcoded by the SPARC32 and LEON port.
487 This is the virtual address u-boot jumps to when booting the Linux
495 menu "Bus options (PCI etc.)"
505 bool "Sun Logical Domains support"
508 Say Y here is you want to support virtual devices via
512 bool "Support for PCI and PS/2 keyboard/mouse"
514 Find out whether your system includes a PCI bus. PCI is the name of
515 a bus system, i.e. the way the CPU talks to the other stuff inside
516 your box. If you say Y here, the kernel will include drivers and
517 infrastructure code to support PCI bus devices.
519 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
520 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
521 All of these platforms are extremely obscure, so say N if unsure.
524 def_bool PCI if SPARC64
531 depends on PCI && SPARC32 && !SPARC_LEON
536 depends on PCI && SPARC_LEON
540 bool "GRPCI2 Host Bridge Support"
544 Say Y here to include the GRPCI2 Host Bridge Driver.
546 source "drivers/pci/Kconfig"
548 source "drivers/pcmcia/Kconfig"
550 config SUN_OPENPROMFS
551 tristate "Openprom tree appears in /proc/openprom"
553 If you say Y, the OpenPROM device tree will be available as a
554 virtual file system, which you can mount to /proc/openprom by "mount
555 -t openpromfs none /proc/openprom".
557 To compile the /proc/openprom support as a module, choose M here: the
558 module will be called openpromfs.
560 Only choose N if you know in advance that you will not need to modify
561 OpenPROM settings on the running system.
567 depends on SPARC64 && PCI
571 menu "Executable file formats"
573 source "fs/Kconfig.binfmt"
579 select COMPAT_BINFMT_ELF
580 select ARCH_WANT_OLD_COMPAT_IPC
582 config SYSVIPC_COMPAT
584 depends on COMPAT && SYSVIPC
591 source "drivers/Kconfig"
593 source "drivers/sbus/char/Kconfig"
597 source "arch/sparc/Kconfig.debug"
599 source "security/Kconfig"
601 source "crypto/Kconfig"