1 # sparc64 configuration
2 mainmenu "Linux Kernel Configuration for 64-bit SPARC"
21 config GENERIC_CMOS_UPDATE
25 config GENERIC_CLOCKEVENTS
44 config STACKTRACE_SUPPORT
48 config LOCKDEP_SUPPORT
52 config ARCH_MAY_HAVE_PC_FDC
56 config ARCH_HAS_ILOG2_U32
60 config ARCH_HAS_ILOG2_U64
68 config HAVE_SETUP_PER_CPU_AREA
71 config ARCH_NO_VIRT_TO_BUS
77 config GENERIC_HARDIRQS_NO__DO_IRQ
82 prompt "Kernel page size"
83 default SPARC64_PAGE_SIZE_8KB
85 config SPARC64_PAGE_SIZE_8KB
88 This lets you select the page size of the kernel.
90 8KB and 64KB work quite well, since SPARC ELF sections
91 provide for up to 64KB alignment.
93 Therefore, 512KB and 4MB are for expert hackers only.
95 If you don't know what to do, choose 8KB.
97 config SPARC64_PAGE_SIZE_64KB
100 config SPARC64_PAGE_SIZE_512KB
103 config SPARC64_PAGE_SIZE_4MB
109 bool "Enable seccomp to safely compute untrusted bytecode"
113 This kernel feature is useful for number crunching applications
114 that may need to compute untrusted bytecode during their
115 execution. By using pipes or other transports made available to
116 the process as file descriptors supporting the read/write
117 syscalls, it's possible to isolate those applications in
118 their own address space using seccomp. Once seccomp is
119 enabled via /proc/<pid>/seccomp, it cannot be disabled
120 and the task is only allowed to execute a few safe syscalls
121 defined by each seccomp mode.
123 If unsure, say Y. Only embedded should say N here.
125 source kernel/Kconfig.hz
128 bool "Support for hot-pluggable CPUs"
132 Say Y here to experiment with turning CPUs off and on. CPUs
133 can be controlled through /sys/devices/system/cpu/cpu#.
134 Say N if you want to disable CPU hotplug.
136 source "init/Kconfig"
138 config GENERIC_HARDIRQS
142 menu "General machine setup"
144 source "kernel/time/Kconfig"
147 bool "Symmetric multi-processing support"
149 This enables support for systems with more than one CPU. If you have
150 a system with only one CPU, say N. If you have a system with more than
153 If you say N here, the kernel will run on single and multiprocessor
154 machines, but will use only one CPU of a multiprocessor machine. If
155 you say Y here, the kernel will run on single-processor machines.
156 On a single-processor machine, the kernel will run faster if you say
159 If you don't know what to do here, say N.
162 int "Maximum number of CPUs (2-1024)"
167 source "drivers/cpufreq/Kconfig"
170 tristate "UltraSPARC-III CPU Frequency driver"
172 select CPU_FREQ_TABLE
174 This adds the CPUFreq driver for UltraSPARC-III processors.
176 For details, take a look at <file:Documentation/cpu-freq>.
181 tristate "UltraSPARC-IIe CPU Frequency driver"
183 select CPU_FREQ_TABLE
185 This adds the CPUFreq driver for UltraSPARC-IIe processors.
187 For details, take a look at <file:Documentation/cpu-freq>.
191 # Global things across all Sun machines.
192 config GENERIC_LOCKBREAK
195 depends on SMP && PREEMPT
197 config RWSEM_GENERIC_SPINLOCK
200 config RWSEM_XCHGADD_ALGORITHM
204 config GENERIC_FIND_NEXT_BIT
208 config GENERIC_HWEIGHT
210 default y if !ULTRA_HAS_POPULATION_COUNT
212 config GENERIC_CALIBRATE_DELAY
217 prompt "SPARC64 Huge TLB Page Size"
218 depends on HUGETLB_PAGE
219 default HUGETLB_PAGE_SIZE_4MB
221 config HUGETLB_PAGE_SIZE_4MB
224 config HUGETLB_PAGE_SIZE_512K
225 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
228 config HUGETLB_PAGE_SIZE_64K
229 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
242 depends on NEED_MULTIPLE_NODES
244 # Some NUMA nodes have memory ranges that span
245 # other nodes. Even though a pfn is valid and
246 # between a node's start and end pfns, it may not
247 # reside on that node. See memmap_init_zone()
249 config NODES_SPAN_OTHER_NODES
251 depends on NEED_MULTIPLE_NODES
253 config ARCH_POPULATES_NODE_MAP
256 config ARCH_SELECT_MEMORY_MODEL
259 config ARCH_SPARSEMEM_ENABLE
261 select SPARSEMEM_VMEMMAP_ENABLE
263 config ARCH_SPARSEMEM_DEFAULT
283 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
284 computer. These are credit-card size devices such as network cards,
285 modems or hard drives often used with laptops computers. There are
286 actually two varieties of these cards: the older 16 bit PCMCIA cards
287 and the newer 32 bit CardBus cards. If you want to use CardBus
288 cards, you need to say Y here and also to "CardBus support" below.
290 To use your PC-cards, you will need supporting software from David
291 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
292 for location). Please also read the PCMCIA-HOWTO, available from
293 <http://www.tldp.org/docs.html#howto>.
295 To compile this driver as modules, choose M here: the
296 modules will be called pcmcia_core and ds.
315 bool "Sun Logical Domains support"
317 Say Y here is you want to support virtual devices via
322 select ARCH_SUPPORTS_MSI
324 Find out whether your system includes a PCI bus. PCI is the name of
325 a bus system, i.e. the way the CPU talks to the other stuff inside
326 your box. If you say Y here, the kernel will include drivers and
327 infrastructure code to support PCI bus devices.
335 source "drivers/pci/Kconfig"
337 config SUN_OPENPROMFS
338 tristate "Openprom tree appears in /proc/openprom"
340 If you say Y, the OpenPROM device tree will be available as a
341 virtual file system, which you can mount to /proc/openprom by "mount
342 -t openpromfs none /proc/openprom".
344 To compile the /proc/openprom support as a module, choose M here: the
345 module will be called openpromfs. If unsure, choose M.
347 menu "Executable file formats"
349 source "fs/Kconfig.binfmt"
354 select COMPAT_BINFMT_ELF
356 config SYSVIPC_COMPAT
358 depends on COMPAT && SYSVIPC
364 bool "SMT (Hyperthreading) scheduler support"
368 SMT scheduler support improves the CPU scheduler's decision making
369 when dealing with SPARC cpus at a cost of slightly increased overhead
370 in some places. If unsure say N here.
373 bool "Multi-core scheduler support"
377 Multi-core scheduler support improves the CPU scheduler's decision
378 making when dealing with multi-core CPU chips at a cost of slightly
379 increased overhead in some places. If unsure say N here.
381 source "kernel/Kconfig.preempt"
384 bool "Default bootloader kernel arguments"
387 string "Initial kernel command string"
388 depends on CMDLINE_BOOL
389 default "console=ttyS0,9600 root=/dev/sda1"
391 Say Y here if you want to be able to pass default arguments to
392 the kernel. This will be overridden by the bootloader, if you
393 use one (such as SILO). This is most useful if you want to boot
394 a kernel from TFTP, and want default options to be available
395 with having them passed on the command line.
397 NOTE: This option WILL override the PROM bootargs setting!
401 source "drivers/Kconfig"
403 source "drivers/sbus/char/Kconfig"
407 source "arch/sparc64/Kconfig.debug"
409 source "security/Kconfig"
411 source "crypto/Kconfig"