1 # sparc64 configuration
2 mainmenu "Linux Kernel Configuration for 64-bit SPARC"
22 config GENERIC_CMOS_UPDATE
26 config GENERIC_CLOCKEVENTS
45 config STACKTRACE_SUPPORT
49 config LOCKDEP_SUPPORT
53 config ARCH_MAY_HAVE_PC_FDC
57 config ARCH_HAS_ILOG2_U32
61 config ARCH_HAS_ILOG2_U64
69 config HAVE_SETUP_PER_CPU_AREA
72 config ARCH_NO_VIRT_TO_BUS
78 config GENERIC_HARDIRQS_NO__DO_IRQ
83 prompt "Kernel page size"
84 default SPARC64_PAGE_SIZE_8KB
86 config SPARC64_PAGE_SIZE_8KB
89 This lets you select the page size of the kernel.
91 8KB and 64KB work quite well, since SPARC ELF sections
92 provide for up to 64KB alignment.
94 Therefore, 512KB and 4MB are for expert hackers only.
96 If you don't know what to do, choose 8KB.
98 config SPARC64_PAGE_SIZE_64KB
101 config SPARC64_PAGE_SIZE_512KB
104 config SPARC64_PAGE_SIZE_4MB
110 bool "Enable seccomp to safely compute untrusted bytecode"
114 This kernel feature is useful for number crunching applications
115 that may need to compute untrusted bytecode during their
116 execution. By using pipes or other transports made available to
117 the process as file descriptors supporting the read/write
118 syscalls, it's possible to isolate those applications in
119 their own address space using seccomp. Once seccomp is
120 enabled via /proc/<pid>/seccomp, it cannot be disabled
121 and the task is only allowed to execute a few safe syscalls
122 defined by each seccomp mode.
124 If unsure, say Y. Only embedded should say N here.
126 source kernel/Kconfig.hz
129 bool "Support for hot-pluggable CPUs"
133 Say Y here to experiment with turning CPUs off and on. CPUs
134 can be controlled through /sys/devices/system/cpu/cpu#.
135 Say N if you want to disable CPU hotplug.
137 source "init/Kconfig"
139 config GENERIC_HARDIRQS
143 menu "General machine setup"
145 source "kernel/time/Kconfig"
148 bool "Symmetric multi-processing support"
150 This enables support for systems with more than one CPU. If you have
151 a system with only one CPU, say N. If you have a system with more than
154 If you say N here, the kernel will run on single and multiprocessor
155 machines, but will use only one CPU of a multiprocessor machine. If
156 you say Y here, the kernel will run on single-processor machines.
157 On a single-processor machine, the kernel will run faster if you say
160 If you don't know what to do here, say N.
163 int "Maximum number of CPUs (2-1024)"
168 source "drivers/cpufreq/Kconfig"
171 tristate "UltraSPARC-III CPU Frequency driver"
173 select CPU_FREQ_TABLE
175 This adds the CPUFreq driver for UltraSPARC-III processors.
177 For details, take a look at <file:Documentation/cpu-freq>.
182 tristate "UltraSPARC-IIe CPU Frequency driver"
184 select CPU_FREQ_TABLE
186 This adds the CPUFreq driver for UltraSPARC-IIe processors.
188 For details, take a look at <file:Documentation/cpu-freq>.
192 # Global things across all Sun machines.
193 config GENERIC_LOCKBREAK
196 depends on SMP && PREEMPT
198 config RWSEM_GENERIC_SPINLOCK
201 config RWSEM_XCHGADD_ALGORITHM
205 config GENERIC_FIND_NEXT_BIT
209 config GENERIC_HWEIGHT
211 default y if !ULTRA_HAS_POPULATION_COUNT
213 config GENERIC_CALIBRATE_DELAY
218 prompt "SPARC64 Huge TLB Page Size"
219 depends on HUGETLB_PAGE
220 default HUGETLB_PAGE_SIZE_4MB
222 config HUGETLB_PAGE_SIZE_4MB
225 config HUGETLB_PAGE_SIZE_512K
226 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
229 config HUGETLB_PAGE_SIZE_64K
230 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
243 depends on NEED_MULTIPLE_NODES
245 # Some NUMA nodes have memory ranges that span
246 # other nodes. Even though a pfn is valid and
247 # between a node's start and end pfns, it may not
248 # reside on that node. See memmap_init_zone()
250 config NODES_SPAN_OTHER_NODES
252 depends on NEED_MULTIPLE_NODES
254 config ARCH_POPULATES_NODE_MAP
257 config ARCH_SELECT_MEMORY_MODEL
260 config ARCH_SPARSEMEM_ENABLE
262 select SPARSEMEM_VMEMMAP_ENABLE
264 config ARCH_SPARSEMEM_DEFAULT
284 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
285 computer. These are credit-card size devices such as network cards,
286 modems or hard drives often used with laptops computers. There are
287 actually two varieties of these cards: the older 16 bit PCMCIA cards
288 and the newer 32 bit CardBus cards. If you want to use CardBus
289 cards, you need to say Y here and also to "CardBus support" below.
291 To use your PC-cards, you will need supporting software from David
292 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
293 for location). Please also read the PCMCIA-HOWTO, available from
294 <http://www.tldp.org/docs.html#howto>.
296 To compile this driver as modules, choose M here: the
297 modules will be called pcmcia_core and ds.
316 bool "Sun Logical Domains support"
318 Say Y here is you want to support virtual devices via
323 select ARCH_SUPPORTS_MSI
325 Find out whether your system includes a PCI bus. PCI is the name of
326 a bus system, i.e. the way the CPU talks to the other stuff inside
327 your box. If you say Y here, the kernel will include drivers and
328 infrastructure code to support PCI bus devices.
336 source "drivers/pci/Kconfig"
338 config SUN_OPENPROMFS
339 tristate "Openprom tree appears in /proc/openprom"
341 If you say Y, the OpenPROM device tree will be available as a
342 virtual file system, which you can mount to /proc/openprom by "mount
343 -t openpromfs none /proc/openprom".
345 To compile the /proc/openprom support as a module, choose M here: the
346 module will be called openpromfs. If unsure, choose M.
348 menu "Executable file formats"
350 source "fs/Kconfig.binfmt"
355 select COMPAT_BINFMT_ELF
357 config SYSVIPC_COMPAT
359 depends on COMPAT && SYSVIPC
365 bool "SMT (Hyperthreading) scheduler support"
369 SMT scheduler support improves the CPU scheduler's decision making
370 when dealing with SPARC cpus at a cost of slightly increased overhead
371 in some places. If unsure say N here.
374 bool "Multi-core scheduler support"
378 Multi-core scheduler support improves the CPU scheduler's decision
379 making when dealing with multi-core CPU chips at a cost of slightly
380 increased overhead in some places. If unsure say N here.
382 source "kernel/Kconfig.preempt"
385 bool "Default bootloader kernel arguments"
388 string "Initial kernel command string"
389 depends on CMDLINE_BOOL
390 default "console=ttyS0,9600 root=/dev/sda1"
392 Say Y here if you want to be able to pass default arguments to
393 the kernel. This will be overridden by the bootloader, if you
394 use one (such as SILO). This is most useful if you want to boot
395 a kernel from TFTP, and want default options to be available
396 with having them passed on the command line.
398 NOTE: This option WILL override the PROM bootargs setting!
402 source "drivers/Kconfig"
404 source "drivers/sbus/char/Kconfig"
408 source "arch/sparc64/Kconfig.debug"
410 source "security/Kconfig"
412 source "crypto/Kconfig"