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
37 select ARCH_SUPPORTS_MSI
38 select HAVE_FUNCTION_TRACER
39 select HAVE_FUNCTION_GRAPH_TRACER
40 select HAVE_FUNCTION_GRAPH_FP_TEST
41 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
42 select HAVE_KRETPROBES
44 select HAVE_RCU_TABLE_FREE if SMP
46 select HAVE_SYSCALL_WRAPPERS
47 select HAVE_DYNAMIC_FTRACE
48 select HAVE_FTRACE_MCOUNT_RECORD
49 select HAVE_SYSCALL_TRACEPOINTS
53 select RTC_DRV_STARFIRE
54 select HAVE_PERF_EVENTS
55 select PERF_USE_VMALLOC
56 select IRQ_PREFLOW_FASTEOI
57 select ARCH_HAVE_NMI_SAFE_CMPXCHG
58 select HAVE_C_RECORDMCOUNT
62 default "arch/sparc/configs/sparc32_defconfig" if SPARC32
63 default "arch/sparc/configs/sparc64_defconfig" if SPARC64
65 # CONFIG_BITS can be used at source level to get 32/64 bits
71 config ARCH_USES_GETTIMEOFFSET
75 config GENERIC_CMOS_UPDATE
79 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_HWEIGHT
193 default y if !ULTRA_HAS_POPULATION_COUNT
195 config GENERIC_CALIBRATE_DELAY
199 config ARCH_MAY_HAVE_PC_FDC
203 config EMULATED_CMPXCHG
207 Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
208 is emulated, and therefore it is not completely atomic.
214 depends on SPARC32 && SMP
219 depends on SPARC64 && SMP
222 bool "Support for early boot text console"
226 Say Y here to enable a faster early framebuffer boot console.
229 prompt "Kernel page size" if SPARC64
230 default SPARC64_PAGE_SIZE_8KB
232 config SPARC64_PAGE_SIZE_8KB
235 This lets you select the page size of the kernel.
237 8KB and 64KB work quite well, since SPARC ELF sections
238 provide for up to 64KB alignment.
240 If you don't know what to do, choose 8KB.
242 config SPARC64_PAGE_SIZE_64KB
248 bool "Enable seccomp to safely compute untrusted bytecode"
249 depends on SPARC64 && PROC_FS
252 This kernel feature is useful for number crunching applications
253 that may need to compute untrusted bytecode during their
254 execution. By using pipes or other transports made available to
255 the process as file descriptors supporting the read/write
256 syscalls, it's possible to isolate those applications in
257 their own address space using seccomp. Once seccomp is
258 enabled via /proc/<pid>/seccomp, it cannot be disabled
259 and the task is only allowed to execute a few safe syscalls
260 defined by each seccomp mode.
262 If unsure, say Y. Only embedded should say N here.
265 bool "Support for hot-pluggable CPUs"
266 depends on SPARC64 && SMP
269 Say Y here to experiment with turning CPUs off and on. CPUs
270 can be controlled through /sys/devices/system/cpu/cpu#.
271 Say N if you want to disable CPU hotplug.
273 source "kernel/time/Kconfig"
276 source "drivers/cpufreq/Kconfig"
279 tristate "UltraSPARC-III CPU Frequency driver"
281 select CPU_FREQ_TABLE
283 This adds the CPUFreq driver for UltraSPARC-III processors.
285 For details, take a look at <file:Documentation/cpu-freq>.
290 tristate "UltraSPARC-IIe CPU Frequency driver"
292 select CPU_FREQ_TABLE
294 This adds the CPUFreq driver for UltraSPARC-IIe processors.
296 For details, take a look at <file:Documentation/cpu-freq>.
303 tristate "UltraSPARC-III Memory Controller driver"
307 This adds a driver for the UltraSPARC-III memory controller.
308 Loading this driver allows exact mnemonic strings to be
309 printed in the event of a memory error, so that the faulty DIMM
310 on the motherboard can be matched to the error.
312 If in doubt, say Y, as this information can be very useful.
314 # Global things across all Sun machines.
315 config GENERIC_LOCKBREAK
318 depends on SPARC64 && SMP && PREEMPT
321 prompt "SPARC64 Huge TLB Page Size"
322 depends on SPARC64 && HUGETLB_PAGE
323 default HUGETLB_PAGE_SIZE_4MB
325 config HUGETLB_PAGE_SIZE_4MB
328 config HUGETLB_PAGE_SIZE_512K
331 config HUGETLB_PAGE_SIZE_64K
332 depends on !SPARC64_PAGE_SIZE_64KB
339 depends on SPARC64 && SMP
344 depends on NEED_MULTIPLE_NODES
346 # Some NUMA nodes have memory ranges that span
347 # other nodes. Even though a pfn is valid and
348 # between a node's start and end pfns, it may not
349 # reside on that node. See memmap_init_zone()
351 config NODES_SPAN_OTHER_NODES
353 depends on NEED_MULTIPLE_NODES
355 config ARCH_POPULATES_NODE_MAP
356 def_bool y if SPARC64
358 config ARCH_SELECT_MEMORY_MODEL
359 def_bool y if SPARC64
361 config ARCH_SPARSEMEM_ENABLE
362 def_bool y if SPARC64
363 select SPARSEMEM_VMEMMAP_ENABLE
365 config ARCH_SPARSEMEM_DEFAULT
366 def_bool y if SPARC64
371 bool "SMT (Hyperthreading) scheduler support"
372 depends on SPARC64 && SMP
375 SMT scheduler support improves the CPU scheduler's decision making
376 when dealing with SPARC cpus at a cost of slightly increased overhead
377 in some places. If unsure say N here.
380 bool "Multi-core scheduler support"
381 depends on SPARC64 && SMP
384 Multi-core scheduler support improves the CPU scheduler's decision
385 making when dealing with multi-core CPU chips at a cost of slightly
386 increased overhead in some places. If unsure say N here.
389 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
581 config SYSVIPC_COMPAT
583 depends on COMPAT && SYSVIPC
590 source "drivers/Kconfig"
592 source "drivers/sbus/char/Kconfig"
596 source "arch/sparc/Kconfig.debug"
598 source "security/Kconfig"
600 source "crypto/Kconfig"