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
35 select GENERIC_ATOMIC64
40 select ARCH_SUPPORTS_MSI
41 select HAVE_FUNCTION_TRACER
42 select HAVE_FUNCTION_GRAPH_TRACER
43 select HAVE_FUNCTION_GRAPH_FP_TEST
44 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
45 select HAVE_KRETPROBES
47 select HAVE_RCU_TABLE_FREE if SMP
49 select HAVE_MEMBLOCK_NODE_MAP
50 select HAVE_SYSCALL_WRAPPERS
51 select HAVE_DYNAMIC_FTRACE
52 select HAVE_FTRACE_MCOUNT_RECORD
53 select HAVE_SYSCALL_TRACEPOINTS
57 select RTC_DRV_STARFIRE
58 select HAVE_PERF_EVENTS
59 select PERF_USE_VMALLOC
60 select IRQ_PREFLOW_FASTEOI
61 select ARCH_HAVE_NMI_SAFE_CMPXCHG
62 select HAVE_C_RECORDMCOUNT
66 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
67 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
69 # CONFIG_BITS can be used at source level to get 32/64 bits
75 config ARCH_USES_GETTIMEOFFSET
79 config GENERIC_CMOS_UPDATE
83 config GENERIC_CLOCKEVENTS
91 config STACKTRACE_SUPPORT
95 config LOCKDEP_SUPPORT
99 config HAVE_LATENCYTOP_SUPPORT
107 config HAVE_SETUP_PER_CPU_AREA
108 def_bool y if SPARC64
110 config NEED_PER_CPU_EMBED_FIRST_CHUNK
111 def_bool y if SPARC64
113 config NEED_PER_CPU_PAGE_FIRST_CHUNK
114 def_bool y if SPARC64
128 config NEED_DMA_MAP_STATE
131 config NEED_SG_DMA_LENGTH
134 config GENERIC_ISA_DMA
141 Generic GPIO API support
143 config ARCH_NO_VIRT_TO_BUS
146 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
147 def_bool y if SPARC64
149 source "init/Kconfig"
151 source "kernel/Kconfig.freezer"
153 menu "Processor type and features"
156 bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
158 This enables support for systems with more than one CPU. If you have
159 a system with only one CPU, say N. If you have a system with more
162 If you say N here, the kernel will run on single and multiprocessor
163 machines, but will use only one CPU of a multiprocessor machine. If
164 you say Y here, the kernel will run on many, but not all,
165 singleprocessor machines. On a singleprocessor machine, the kernel
166 will run faster if you say N here.
168 People using multiprocessor machines who say Y here should also say
169 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
170 Management" code will be disabled if you say Y here.
172 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
173 available at <http://www.tldp.org/docs.html#howto>.
175 If you don't know what to do here, say N.
178 int "Maximum number of CPUs"
180 range 2 32 if SPARC32
181 range 2 1024 if SPARC64
182 default 32 if SPARC32
183 default 64 if SPARC64
185 source kernel/Kconfig.hz
187 config RWSEM_GENERIC_SPINLOCK
191 config RWSEM_XCHGADD_ALGORITHM
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_SELECT_MEMORY_MODEL
360 def_bool y if SPARC64
362 config ARCH_SPARSEMEM_ENABLE
363 def_bool y if SPARC64
364 select SPARSEMEM_VMEMMAP_ENABLE
366 config ARCH_SPARSEMEM_DEFAULT
367 def_bool y if SPARC64
372 bool "SMT (Hyperthreading) scheduler support"
373 depends on SPARC64 && SMP
376 SMT scheduler support improves the CPU scheduler's decision making
377 when dealing with SPARC cpus at a cost of slightly increased overhead
378 in some places. If unsure say N here.
381 bool "Multi-core scheduler support"
382 depends on SPARC64 && SMP
385 Multi-core scheduler support improves the CPU scheduler's decision
386 making when dealing with multi-core CPU chips at a cost of slightly
387 increased overhead in some places. If unsure say N here.
389 source "kernel/Kconfig.preempt"
392 bool "Default bootloader kernel arguments"
396 string "Initial kernel command string"
397 depends on CMDLINE_BOOL
398 default "console=ttyS0,9600 root=/dev/sda1"
400 Say Y here if you want to be able to pass default arguments to
401 the kernel. This will be overridden by the bootloader, if you
402 use one (such as SILO). This is most useful if you want to boot
403 a kernel from TFTP, and want default options to be available
404 with having them passed on the command line.
406 NOTE: This option WILL override the PROM bootargs setting!
412 Enable power management and CPU standby features on supported
416 tristate "Sun4m LED driver"
419 This driver toggles the front-panel LED on sun4m systems
420 in a user-specifiable manner. Its state can be probed
421 by reading /proc/led and its blinking mode can be changed
422 via writes to /proc/led
424 config SERIAL_CONSOLE
429 If you say Y here, it will be possible to use a serial port as the
430 system console (the system console is the device which receives all
431 kernel messages and warnings and which allows logins in single user
432 mode). This could be useful if some terminal or printer is connected
435 Even if you say Y here, the currently visible virtual console
436 (/dev/tty0) will still be used as the system console by default, but
437 you can alter that using a kernel command line option such as
438 "console=ttyS1". (Try "man bootparam" or see the documentation of
439 your boot loader (silo) about how to pass options to the kernel at
442 If you don't have a graphics card installed and you say Y here, the
443 kernel will automatically use the first serial line, /dev/ttyS0, as
449 bool "Sparc Leon processor family"
452 If you say Y here if you are running on a SPARC-LEON processor.
453 The LEON processor is a synthesizable VHDL model of the
454 SPARC-v8 standard. LEON is part of the GRLIB collection of
455 IP cores that are distributed under GPL. GRLIB can be downloaded
456 from www.gaisler.com. You can download a sparc-linux cross-compilation
457 toolchain at www.gaisler.com.
460 menu "U-Boot options"
462 config UBOOT_LOAD_ADDR
463 hex "uImage Load Address"
466 U-Boot kernel load address, the address in physical address space
467 where u-boot will place the Linux kernel before booting it.
468 This address is normally the base address of main memory + 0x4000.
470 config UBOOT_FLASH_ADDR
471 hex "uImage.o Load Address"
474 Optional setting only affecting the uImage.o ELF-image used to
475 download the uImage file to the target using a ELF-loader other than
476 U-Boot. It may for example be used to download an uImage to FLASH with
477 the GRMON utility before even starting u-boot.
479 config UBOOT_ENTRY_ADDR
480 hex "uImage Entry Address"
483 Do not change this unless you know what you're doing. This is
484 hardcoded by the SPARC32 and LEON port.
486 This is the virtual address u-boot jumps to when booting the Linux
494 menu "Bus options (PCI etc.)"
504 bool "Sun Logical Domains support"
507 Say Y here is you want to support virtual devices via
511 bool "Support for PCI and PS/2 keyboard/mouse"
513 Find out whether your system includes a PCI bus. PCI is the name of
514 a bus system, i.e. the way the CPU talks to the other stuff inside
515 your box. If you say Y here, the kernel will include drivers and
516 infrastructure code to support PCI bus devices.
518 CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
519 CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
520 All of these platforms are extremely obscure, so say N if unsure.
523 def_bool PCI if SPARC64
530 depends on PCI && SPARC32 && !SPARC_LEON
535 depends on PCI && SPARC_LEON
539 bool "GRPCI2 Host Bridge Support"
543 Say Y here to include the GRPCI2 Host Bridge Driver.
545 source "drivers/pci/Kconfig"
547 source "drivers/pcmcia/Kconfig"
549 config SUN_OPENPROMFS
550 tristate "Openprom tree appears in /proc/openprom"
552 If you say Y, the OpenPROM device tree will be available as a
553 virtual file system, which you can mount to /proc/openprom by "mount
554 -t openpromfs none /proc/openprom".
556 To compile the /proc/openprom support as a module, choose M here: the
557 module will be called openpromfs.
559 Only choose N if you know in advance that you will not need to modify
560 OpenPROM settings on the running system.
566 depends on SPARC64 && PCI
570 menu "Executable file formats"
572 source "fs/Kconfig.binfmt"
578 select COMPAT_BINFMT_ELF
580 config SYSVIPC_COMPAT
582 depends on COMPAT && SYSVIPC
589 source "drivers/Kconfig"
591 source "drivers/sbus/char/Kconfig"
595 source "arch/sparc/Kconfig.debug"
597 source "security/Kconfig"
599 source "crypto/Kconfig"