1 # sparc64 configuration
2 mainmenu "Linux Kernel Configuration for 64-bit SPARC"
23 config GENERIC_CMOS_UPDATE
27 config GENERIC_CLOCKEVENTS
46 config STACKTRACE_SUPPORT
50 config LOCKDEP_SUPPORT
54 config ARCH_MAY_HAVE_PC_FDC
58 config ARCH_HAS_ILOG2_U32
62 config ARCH_HAS_ILOG2_U64
70 config HAVE_SETUP_PER_CPU_AREA
73 config ARCH_NO_VIRT_TO_BUS
79 config GENERIC_HARDIRQS_NO__DO_IRQ
84 prompt "Kernel page size"
85 default SPARC64_PAGE_SIZE_8KB
87 config SPARC64_PAGE_SIZE_8KB
90 This lets you select the page size of the kernel.
92 8KB and 64KB work quite well, since SPARC ELF sections
93 provide for up to 64KB alignment.
95 Therefore, 512KB and 4MB are for expert hackers only.
97 If you don't know what to do, choose 8KB.
99 config SPARC64_PAGE_SIZE_64KB
102 config SPARC64_PAGE_SIZE_512KB
105 config SPARC64_PAGE_SIZE_4MB
111 bool "Enable seccomp to safely compute untrusted bytecode"
115 This kernel feature is useful for number crunching applications
116 that may need to compute untrusted bytecode during their
117 execution. By using pipes or other transports made available to
118 the process as file descriptors supporting the read/write
119 syscalls, it's possible to isolate those applications in
120 their own address space using seccomp. Once seccomp is
121 enabled via /proc/<pid>/seccomp, it cannot be disabled
122 and the task is only allowed to execute a few safe syscalls
123 defined by each seccomp mode.
125 If unsure, say Y. Only embedded should say N here.
127 source kernel/Kconfig.hz
130 bool "Support for hot-pluggable CPUs"
134 Say Y here to experiment with turning CPUs off and on. CPUs
135 can be controlled through /sys/devices/system/cpu/cpu#.
136 Say N if you want to disable CPU hotplug.
138 source "init/Kconfig"
140 config GENERIC_HARDIRQS
144 menu "General machine setup"
146 source "kernel/time/Kconfig"
149 bool "Symmetric multi-processing support"
151 This enables support for systems with more than one CPU. If you have
152 a system with only one CPU, say N. If you have a system with more than
155 If you say N here, the kernel will run on single and multiprocessor
156 machines, but will use only one CPU of a multiprocessor machine. If
157 you say Y here, the kernel will run on single-processor machines.
158 On a single-processor machine, the kernel will run faster if you say
161 If you don't know what to do here, say N.
164 int "Maximum number of CPUs (2-1024)"
169 source "drivers/cpufreq/Kconfig"
172 tristate "UltraSPARC-III CPU Frequency driver"
174 select CPU_FREQ_TABLE
176 This adds the CPUFreq driver for UltraSPARC-III processors.
178 For details, take a look at <file:Documentation/cpu-freq>.
183 tristate "UltraSPARC-IIe CPU Frequency driver"
185 select CPU_FREQ_TABLE
187 This adds the CPUFreq driver for UltraSPARC-IIe processors.
189 For details, take a look at <file:Documentation/cpu-freq>.
193 # Global things across all Sun machines.
194 config GENERIC_LOCKBREAK
197 depends on SMP && PREEMPT
199 config RWSEM_GENERIC_SPINLOCK
202 config RWSEM_XCHGADD_ALGORITHM
206 config GENERIC_FIND_NEXT_BIT
210 config GENERIC_HWEIGHT
212 default y if !ULTRA_HAS_POPULATION_COUNT
214 config GENERIC_CALIBRATE_DELAY
219 prompt "SPARC64 Huge TLB Page Size"
220 depends on HUGETLB_PAGE
221 default HUGETLB_PAGE_SIZE_4MB
223 config HUGETLB_PAGE_SIZE_4MB
226 config HUGETLB_PAGE_SIZE_512K
227 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
230 config HUGETLB_PAGE_SIZE_64K
231 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
244 depends on NEED_MULTIPLE_NODES
246 # Some NUMA nodes have memory ranges that span
247 # other nodes. Even though a pfn is valid and
248 # between a node's start and end pfns, it may not
249 # reside on that node. See memmap_init_zone()
251 config NODES_SPAN_OTHER_NODES
253 depends on NEED_MULTIPLE_NODES
255 config ARCH_POPULATES_NODE_MAP
258 config ARCH_SELECT_MEMORY_MODEL
261 config ARCH_SPARSEMEM_ENABLE
263 select SPARSEMEM_VMEMMAP_ENABLE
265 config ARCH_SPARSEMEM_DEFAULT
285 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
286 computer. These are credit-card size devices such as network cards,
287 modems or hard drives often used with laptops computers. There are
288 actually two varieties of these cards: the older 16 bit PCMCIA cards
289 and the newer 32 bit CardBus cards. If you want to use CardBus
290 cards, you need to say Y here and also to "CardBus support" below.
292 To use your PC-cards, you will need supporting software from David
293 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
294 for location). Please also read the PCMCIA-HOWTO, available from
295 <http://www.tldp.org/docs.html#howto>.
297 To compile this driver as modules, choose M here: the
298 modules will be called pcmcia_core and ds.
317 bool "Sun Logical Domains support"
319 Say Y here is you want to support virtual devices via
324 select ARCH_SUPPORTS_MSI
326 Find out whether your system includes a PCI bus. PCI is the name of
327 a bus system, i.e. the way the CPU talks to the other stuff inside
328 your box. If you say Y here, the kernel will include drivers and
329 infrastructure code to support PCI bus devices.
337 source "drivers/pci/Kconfig"
339 config SUN_OPENPROMFS
340 tristate "Openprom tree appears in /proc/openprom"
342 If you say Y, the OpenPROM device tree will be available as a
343 virtual file system, which you can mount to /proc/openprom by "mount
344 -t openpromfs none /proc/openprom".
346 To compile the /proc/openprom support as a module, choose M here: the
347 module will be called openpromfs. If unsure, choose M.
349 menu "Executable file formats"
351 source "fs/Kconfig.binfmt"
356 select COMPAT_BINFMT_ELF
358 config SYSVIPC_COMPAT
360 depends on COMPAT && SYSVIPC
366 bool "SMT (Hyperthreading) scheduler support"
370 SMT scheduler support improves the CPU scheduler's decision making
371 when dealing with SPARC cpus at a cost of slightly increased overhead
372 in some places. If unsure say N here.
375 bool "Multi-core scheduler support"
379 Multi-core scheduler support improves the CPU scheduler's decision
380 making when dealing with multi-core CPU chips at a cost of slightly
381 increased overhead in some places. If unsure say N here.
383 source "kernel/Kconfig.preempt"
386 bool "Default bootloader kernel arguments"
389 string "Initial kernel command string"
390 depends on CMDLINE_BOOL
391 default "console=ttyS0,9600 root=/dev/sda1"
393 Say Y here if you want to be able to pass default arguments to
394 the kernel. This will be overridden by the bootloader, if you
395 use one (such as SILO). This is most useful if you want to boot
396 a kernel from TFTP, and want default options to be available
397 with having them passed on the command line.
399 NOTE: This option WILL override the PROM bootargs setting!
403 source "drivers/Kconfig"
405 source "drivers/sbus/char/Kconfig"
409 source "arch/sparc64/Kconfig.debug"
411 source "security/Kconfig"
413 source "crypto/Kconfig"