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
37 select GENERIC_ATOMIC64
42 select ARCH_SUPPORTS_MSI
43 select HAVE_FUNCTION_TRACER
44 select HAVE_FUNCTION_GRAPH_TRACER
45 select HAVE_FUNCTION_GRAPH_FP_TEST
46 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
47 select HAVE_KRETPROBES
49 select HAVE_RCU_TABLE_FREE if SMP
51 select HAVE_MEMBLOCK_NODE_MAP
52 select HAVE_SYSCALL_WRAPPERS
53 select HAVE_DYNAMIC_FTRACE
54 select HAVE_FTRACE_MCOUNT_RECORD
55 select HAVE_SYSCALL_TRACEPOINTS
59 select RTC_DRV_STARFIRE
60 select HAVE_PERF_EVENTS
61 select PERF_USE_VMALLOC
62 select IRQ_PREFLOW_FASTEOI
63 select ARCH_HAVE_NMI_SAFE_CMPXCHG
64 select HAVE_C_RECORDMCOUNT
68 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
69 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
71 # CONFIG_BITS can be used at source level to get 32/64 bits
77 config ARCH_USES_GETTIMEOFFSET
81 config GENERIC_CMOS_UPDATE
85 config GENERIC_CLOCKEVENTS
93 config STACKTRACE_SUPPORT
97 config LOCKDEP_SUPPORT
101 config HAVE_LATENCYTOP_SUPPORT
109 config HAVE_SETUP_PER_CPU_AREA
110 def_bool y if SPARC64
112 config NEED_PER_CPU_EMBED_FIRST_CHUNK
113 def_bool y if SPARC64
115 config NEED_PER_CPU_PAGE_FIRST_CHUNK
116 def_bool y if SPARC64
130 config NEED_DMA_MAP_STATE
133 config NEED_SG_DMA_LENGTH
136 config GENERIC_ISA_DMA
143 Generic GPIO API support
145 config ARCH_NO_VIRT_TO_BUS
148 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
149 def_bool y if SPARC64
151 source "init/Kconfig"
153 source "kernel/Kconfig.freezer"
155 menu "Processor type and features"
158 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
160 This enables support for systems with more than one CPU. If you have
161 a system with only one CPU, say N. If you have a system with more
164 If you say N here, the kernel will run on single and multiprocessor
165 machines, but will use only one CPU of a multiprocessor machine. If
166 you say Y here, the kernel will run on many, but not all,
167 singleprocessor machines. On a singleprocessor machine, the kernel
168 will run faster if you say N here.
170 People using multiprocessor machines who say Y here should also say
171 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
172 Management" code will be disabled if you say Y here.
174 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
175 available at <http://www.tldp.org/docs.html#howto>.
177 If you don't know what to do here, say N.
180 int "Maximum number of CPUs"
182 range 2 32 if SPARC32
183 range 2 1024 if SPARC64
184 default 32 if SPARC32
185 default 64 if SPARC64
187 source kernel/Kconfig.hz
189 config RWSEM_GENERIC_SPINLOCK
193 config RWSEM_XCHGADD_ALGORITHM
197 config GENERIC_HWEIGHT
199 default y if !ULTRA_HAS_POPULATION_COUNT
201 config GENERIC_CALIBRATE_DELAY
205 config ARCH_MAY_HAVE_PC_FDC
209 config EMULATED_CMPXCHG
213 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
214 is emulated, and therefore it is not completely atomic.
220 depends on SPARC32 && SMP
225 depends on SPARC64 && SMP
228 bool "Support for early boot text console"
232 Say Y here to enable a faster early framebuffer boot console.
235 prompt "Kernel page size" if SPARC64
236 default SPARC64_PAGE_SIZE_8KB
238 config SPARC64_PAGE_SIZE_8KB
241 This lets you select the page size of the kernel.
243 8KB and 64KB work quite well, since SPARC ELF sections
244 provide for up to 64KB alignment.
246 If you don't know what to do, choose 8KB.
248 config SPARC64_PAGE_SIZE_64KB
254 bool "Enable seccomp to safely compute untrusted bytecode"
255 depends on SPARC64 && PROC_FS
258 This kernel feature is useful for number crunching applications
259 that may need to compute untrusted bytecode during their
260 execution. By using pipes or other transports made available to
261 the process as file descriptors supporting the read/write
262 syscalls, it's possible to isolate those applications in
263 their own address space using seccomp. Once seccomp is
264 enabled via /proc/<pid>/seccomp, it cannot be disabled
265 and the task is only allowed to execute a few safe syscalls
266 defined by each seccomp mode.
268 If unsure, say Y. Only embedded should say N here.
271 bool "Support for hot-pluggable CPUs"
272 depends on SPARC64 && SMP
275 Say Y here to experiment with turning CPUs off and on. CPUs
276 can be controlled through /sys/devices/system/cpu/cpu#.
277 Say N if you want to disable CPU hotplug.
279 source "kernel/time/Kconfig"
282 source "drivers/cpufreq/Kconfig"
285 tristate "UltraSPARC-III CPU Frequency driver"
287 select CPU_FREQ_TABLE
289 This adds the CPUFreq driver for UltraSPARC-III processors.
291 For details, take a look at <file:Documentation/cpu-freq>.
296 tristate "UltraSPARC-IIe CPU Frequency driver"
298 select CPU_FREQ_TABLE
300 This adds the CPUFreq driver for UltraSPARC-IIe processors.
302 For details, take a look at <file:Documentation/cpu-freq>.
309 tristate "UltraSPARC-III Memory Controller driver"
313 This adds a driver for the UltraSPARC-III memory controller.
314 Loading this driver allows exact mnemonic strings to be
315 printed in the event of a memory error, so that the faulty DIMM
316 on the motherboard can be matched to the error.
318 If in doubt, say Y, as this information can be very useful.
320 # Global things across all Sun machines.
321 config GENERIC_LOCKBREAK
324 depends on SPARC64 && SMP && PREEMPT
327 prompt "SPARC64 Huge TLB Page Size"
328 depends on SPARC64 && HUGETLB_PAGE
329 default HUGETLB_PAGE_SIZE_4MB
331 config HUGETLB_PAGE_SIZE_4MB
334 config HUGETLB_PAGE_SIZE_512K
337 config HUGETLB_PAGE_SIZE_64K
338 depends on !SPARC64_PAGE_SIZE_64KB
345 depends on SPARC64 && SMP
350 depends on NEED_MULTIPLE_NODES
352 # Some NUMA nodes have memory ranges that span
353 # other nodes. Even though a pfn is valid and
354 # between a node's start and end pfns, it may not
355 # reside on that node. See memmap_init_zone()
357 config NODES_SPAN_OTHER_NODES
359 depends on NEED_MULTIPLE_NODES
361 config ARCH_SELECT_MEMORY_MODEL
362 def_bool y if SPARC64
364 config ARCH_SPARSEMEM_ENABLE
365 def_bool y if SPARC64
366 select SPARSEMEM_VMEMMAP_ENABLE
368 config ARCH_SPARSEMEM_DEFAULT
369 def_bool y if SPARC64
374 bool "SMT (Hyperthreading) scheduler support"
375 depends on SPARC64 && SMP
378 SMT scheduler support improves the CPU scheduler's decision making
379 when dealing with SPARC cpus at a cost of slightly increased overhead
380 in some places. If unsure say N here.
383 bool "Multi-core scheduler support"
384 depends on SPARC64 && SMP
387 Multi-core scheduler support improves the CPU scheduler's decision
388 making when dealing with multi-core CPU chips at a cost of slightly
389 increased overhead in some places. If unsure say N here.
391 source "kernel/Kconfig.preempt"
394 bool "Default bootloader kernel arguments"
398 string "Initial kernel command string"
399 depends on CMDLINE_BOOL
400 default "console=ttyS0,9600 root=/dev/sda1"
402 Say Y here if you want to be able to pass default arguments to
403 the kernel. This will be overridden by the bootloader, if you
404 use one (such as SILO). This is most useful if you want to boot
405 a kernel from TFTP, and want default options to be available
406 with having them passed on the command line.
408 NOTE: This option WILL override the PROM bootargs setting!
414 Enable power management and CPU standby features on supported
418 tristate "Sun4m LED driver"
421 This driver toggles the front-panel LED on sun4m systems
422 in a user-specifiable manner. Its state can be probed
423 by reading /proc/led and its blinking mode can be changed
424 via writes to /proc/led
426 config SERIAL_CONSOLE
431 If you say Y here, it will be possible to use a serial port as the
432 system console (the system console is the device which receives all
433 kernel messages and warnings and which allows logins in single user
434 mode). This could be useful if some terminal or printer is connected
437 Even if you say Y here, the currently visible virtual console
438 (/dev/tty0) will still be used as the system console by default, but
439 you can alter that using a kernel command line option such as
440 "console=ttyS1". (Try "man bootparam" or see the documentation of
441 your boot loader (silo) about how to pass options to the kernel at
444 If you don't have a graphics card installed and you say Y here, the
445 kernel will automatically use the first serial line, /dev/ttyS0, as
451 bool "Sparc Leon processor family"
454 If you say Y here if you are running on a SPARC-LEON processor.
455 The LEON processor is a synthesizable VHDL model of the
456 SPARC-v8 standard. LEON is part of the GRLIB collection of
457 IP cores that are distributed under GPL. GRLIB can be downloaded
458 from www.gaisler.com. You can download a sparc-linux cross-compilation
459 toolchain at www.gaisler.com.
462 menu "U-Boot options"
464 config UBOOT_LOAD_ADDR
465 hex "uImage Load Address"
468 U-Boot kernel load address, the address in physical address space
469 where u-boot will place the Linux kernel before booting it.
470 This address is normally the base address of main memory + 0x4000.
472 config UBOOT_FLASH_ADDR
473 hex "uImage.o Load Address"
476 Optional setting only affecting the uImage.o ELF-image used to
477 download the uImage file to the target using a ELF-loader other than
478 U-Boot. It may for example be used to download an uImage to FLASH with
479 the GRMON utility before even starting u-boot.
481 config UBOOT_ENTRY_ADDR
482 hex "uImage Entry Address"
485 Do not change this unless you know what you're doing. This is
486 hardcoded by the SPARC32 and LEON port.
488 This is the virtual address u-boot jumps to when booting the Linux
496 menu "Bus options (PCI etc.)"
506 bool "Sun Logical Domains support"
509 Say Y here is you want to support virtual devices via
513 bool "Support for PCI and PS/2 keyboard/mouse"
515 Find out whether your system includes a PCI bus. PCI is the name of
516 a bus system, i.e. the way the CPU talks to the other stuff inside
517 your box. If you say Y here, the kernel will include drivers and
518 infrastructure code to support PCI bus devices.
520 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
521 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
522 All of these platforms are extremely obscure, so say N if unsure.
525 def_bool PCI if SPARC64
532 depends on PCI && SPARC32 && !SPARC_LEON
537 depends on PCI && SPARC_LEON
541 bool "GRPCI2 Host Bridge Support"
545 Say Y here to include the GRPCI2 Host Bridge Driver.
547 source "drivers/pci/Kconfig"
549 source "drivers/pcmcia/Kconfig"
551 config SUN_OPENPROMFS
552 tristate "Openprom tree appears in /proc/openprom"
554 If you say Y, the OpenPROM device tree will be available as a
555 virtual file system, which you can mount to /proc/openprom by "mount
556 -t openpromfs none /proc/openprom".
558 To compile the /proc/openprom support as a module, choose M here: the
559 module will be called openpromfs.
561 Only choose N if you know in advance that you will not need to modify
562 OpenPROM settings on the running system.
568 depends on SPARC64 && PCI
572 menu "Executable file formats"
574 source "fs/Kconfig.binfmt"
580 select COMPAT_BINFMT_ELF
581 select ARCH_WANT_OLD_COMPAT_IPC
583 config SYSVIPC_COMPAT
585 depends on COMPAT && SYSVIPC
592 source "drivers/Kconfig"
594 source "drivers/sbus/char/Kconfig"
598 source "arch/sparc/Kconfig.debug"
600 source "security/Kconfig"
602 source "crypto/Kconfig"