1 # sparc64 configuration
2 mainmenu "Linux Kernel Configuration for 64-bit SPARC"
14 select HAVE_DYNAMIC_FTRACE
18 select HAVE_SYSCALL_WRAPPERS
20 select USE_GENERIC_SMP_HELPERS if SMP
21 select HAVE_ARCH_TRACEHOOK
27 config GENERIC_CMOS_UPDATE
31 config GENERIC_CLOCKEVENTS
50 config STACKTRACE_SUPPORT
54 config LOCKDEP_SUPPORT
58 config ARCH_MAY_HAVE_PC_FDC
62 config ARCH_HAS_ILOG2_U32
66 config ARCH_HAS_ILOG2_U64
74 config HAVE_SETUP_PER_CPU_AREA
77 config ARCH_NO_VIRT_TO_BUS
83 config GENERIC_HARDIRQS_NO__DO_IRQ
89 menu "Processor type and features"
92 prompt "Kernel page size"
93 default SPARC64_PAGE_SIZE_8KB
95 config SPARC64_PAGE_SIZE_8KB
98 This lets you select the page size of the kernel.
100 8KB and 64KB work quite well, since SPARC ELF sections
101 provide for up to 64KB alignment.
103 If you don't know what to do, choose 8KB.
105 config SPARC64_PAGE_SIZE_64KB
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 config GENERIC_HARDIRQS
142 source "kernel/time/Kconfig"
145 bool "Symmetric multi-processing support"
147 This enables support for systems with more than one CPU. If you have
148 a system with only one CPU, say N. If you have a system with more than
151 If you say N here, the kernel will run on single and multiprocessor
152 machines, but will use only one CPU of a multiprocessor machine. If
153 you say Y here, the kernel will run on single-processor machines.
154 On a single-processor machine, the kernel will run faster if you say
157 If you don't know what to do here, say N.
160 int "Maximum number of CPUs (2-1024)"
165 source "drivers/cpufreq/Kconfig"
168 tristate "UltraSPARC-III CPU Frequency driver"
170 select CPU_FREQ_TABLE
172 This adds the CPUFreq driver for UltraSPARC-III processors.
174 For details, take a look at <file:Documentation/cpu-freq>.
179 tristate "UltraSPARC-IIe CPU Frequency driver"
181 select CPU_FREQ_TABLE
183 This adds the CPUFreq driver for UltraSPARC-IIe processors.
185 For details, take a look at <file:Documentation/cpu-freq>.
189 # Global things across all Sun machines.
190 config GENERIC_LOCKBREAK
193 depends on SMP && PREEMPT
195 config RWSEM_GENERIC_SPINLOCK
198 config RWSEM_XCHGADD_ALGORITHM
202 config GENERIC_FIND_NEXT_BIT
206 config GENERIC_HWEIGHT
208 default y if !ULTRA_HAS_POPULATION_COUNT
210 config GENERIC_CALIBRATE_DELAY
215 prompt "SPARC64 Huge TLB Page Size"
216 depends on HUGETLB_PAGE
217 default HUGETLB_PAGE_SIZE_4MB
219 config HUGETLB_PAGE_SIZE_4MB
222 config HUGETLB_PAGE_SIZE_512K
225 config HUGETLB_PAGE_SIZE_64K
226 depends on !SPARC64_PAGE_SIZE_64KB
240 depends on NEED_MULTIPLE_NODES
242 # Some NUMA nodes have memory ranges that span
243 # other nodes. Even though a pfn is valid and
244 # between a node's start and end pfns, it may not
245 # reside on that node. See memmap_init_zone()
247 config NODES_SPAN_OTHER_NODES
249 depends on NEED_MULTIPLE_NODES
251 config ARCH_POPULATES_NODE_MAP
254 config ARCH_SELECT_MEMORY_MODEL
257 config ARCH_SPARSEMEM_ENABLE
259 select SPARSEMEM_VMEMMAP_ENABLE
261 config ARCH_SPARSEMEM_DEFAULT
281 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
282 computer. These are credit-card size devices such as network cards,
283 modems or hard drives often used with laptops computers. There are
284 actually two varieties of these cards: the older 16 bit PCMCIA cards
285 and the newer 32 bit CardBus cards. If you want to use CardBus
286 cards, you need to say Y here and also to "CardBus support" below.
288 To use your PC-cards, you will need supporting software from David
289 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
290 for location). Please also read the PCMCIA-HOWTO, available from
291 <http://www.tldp.org/docs.html#howto>.
293 To compile this driver as modules, choose M here: the
294 modules will be called pcmcia_core and ds.
313 bool "Sun Logical Domains support"
315 Say Y here is you want to support virtual devices via
320 select ARCH_SUPPORTS_MSI
322 Find out whether your system includes a PCI bus. PCI is the name of
323 a bus system, i.e. the way the CPU talks to the other stuff inside
324 your box. If you say Y here, the kernel will include drivers and
325 infrastructure code to support PCI bus devices.
333 source "drivers/pci/Kconfig"
335 config SUN_OPENPROMFS
336 tristate "Openprom tree appears in /proc/openprom"
338 If you say Y, the OpenPROM device tree will be available as a
339 virtual file system, which you can mount to /proc/openprom by "mount
340 -t openpromfs none /proc/openprom".
342 To compile the /proc/openprom support as a module, choose M here: the
343 module will be called openpromfs. If unsure, choose M.
345 menu "Executable file formats"
347 source "fs/Kconfig.binfmt"
352 select COMPAT_BINFMT_ELF
354 config SYSVIPC_COMPAT
356 depends on COMPAT && SYSVIPC
362 bool "SMT (Hyperthreading) scheduler support"
366 SMT scheduler support improves the CPU scheduler's decision making
367 when dealing with SPARC cpus at a cost of slightly increased overhead
368 in some places. If unsure say N here.
371 bool "Multi-core scheduler support"
375 Multi-core scheduler support improves the CPU scheduler's decision
376 making when dealing with multi-core CPU chips at a cost of slightly
377 increased overhead in some places. If unsure say N here.
379 source "kernel/Kconfig.preempt"
382 bool "Default bootloader kernel arguments"
385 string "Initial kernel command string"
386 depends on CMDLINE_BOOL
387 default "console=ttyS0,9600 root=/dev/sda1"
389 Say Y here if you want to be able to pass default arguments to
390 the kernel. This will be overridden by the bootloader, if you
391 use one (such as SILO). This is most useful if you want to boot
392 a kernel from TFTP, and want default options to be available
393 with having them passed on the command line.
395 NOTE: This option WILL override the PROM bootargs setting!
399 source "drivers/Kconfig"
401 source "drivers/sbus/char/Kconfig"
405 source "arch/sparc64/Kconfig.debug"
407 source "security/Kconfig"
409 source "crypto/Kconfig"