1 # sparc64 configuration
2 mainmenu "Linux Kernel Configuration for 64-bit SPARC"
14 select HAVE_DYNAMIC_FTRACE
19 select USE_GENERIC_SMP_HELPERS if SMP
20 select HAVE_ARCH_TRACEHOOK
26 config GENERIC_CMOS_UPDATE
30 config GENERIC_CLOCKEVENTS
49 config STACKTRACE_SUPPORT
53 config LOCKDEP_SUPPORT
57 config ARCH_MAY_HAVE_PC_FDC
61 config ARCH_HAS_ILOG2_U32
65 config ARCH_HAS_ILOG2_U64
73 config HAVE_SETUP_PER_CPU_AREA
76 config ARCH_NO_VIRT_TO_BUS
82 config GENERIC_HARDIRQS_NO__DO_IRQ
88 menu "Processor type and features"
91 prompt "Kernel page size"
92 default SPARC64_PAGE_SIZE_8KB
94 config SPARC64_PAGE_SIZE_8KB
97 This lets you select the page size of the kernel.
99 8KB and 64KB work quite well, since SPARC ELF sections
100 provide for up to 64KB alignment.
102 If you don't know what to do, choose 8KB.
104 config SPARC64_PAGE_SIZE_64KB
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 config GENERIC_HARDIRQS
141 source "kernel/time/Kconfig"
144 bool "Symmetric multi-processing support"
146 This enables support for systems with more than one CPU. If you have
147 a system with only one CPU, say N. If you have a system with more than
150 If you say N here, the kernel will run on single and multiprocessor
151 machines, but will use only one CPU of a multiprocessor machine. If
152 you say Y here, the kernel will run on single-processor machines.
153 On a single-processor machine, the kernel will run faster if you say
156 If you don't know what to do here, say N.
159 int "Maximum number of CPUs (2-1024)"
164 source "drivers/cpufreq/Kconfig"
167 tristate "UltraSPARC-III CPU Frequency driver"
169 select CPU_FREQ_TABLE
171 This adds the CPUFreq driver for UltraSPARC-III processors.
173 For details, take a look at <file:Documentation/cpu-freq>.
178 tristate "UltraSPARC-IIe CPU Frequency driver"
180 select CPU_FREQ_TABLE
182 This adds the CPUFreq driver for UltraSPARC-IIe processors.
184 For details, take a look at <file:Documentation/cpu-freq>.
188 # Global things across all Sun machines.
189 config GENERIC_LOCKBREAK
192 depends on SMP && PREEMPT
194 config RWSEM_GENERIC_SPINLOCK
197 config RWSEM_XCHGADD_ALGORITHM
201 config GENERIC_FIND_NEXT_BIT
205 config GENERIC_HWEIGHT
207 default y if !ULTRA_HAS_POPULATION_COUNT
209 config GENERIC_CALIBRATE_DELAY
214 prompt "SPARC64 Huge TLB Page Size"
215 depends on HUGETLB_PAGE
216 default HUGETLB_PAGE_SIZE_4MB
218 config HUGETLB_PAGE_SIZE_4MB
221 config HUGETLB_PAGE_SIZE_512K
224 config HUGETLB_PAGE_SIZE_64K
225 depends on !SPARC64_PAGE_SIZE_64KB
238 depends on NEED_MULTIPLE_NODES
240 # Some NUMA nodes have memory ranges that span
241 # other nodes. Even though a pfn is valid and
242 # between a node's start and end pfns, it may not
243 # reside on that node. See memmap_init_zone()
245 config NODES_SPAN_OTHER_NODES
247 depends on NEED_MULTIPLE_NODES
249 config ARCH_POPULATES_NODE_MAP
252 config ARCH_SELECT_MEMORY_MODEL
255 config ARCH_SPARSEMEM_ENABLE
257 select SPARSEMEM_VMEMMAP_ENABLE
259 config ARCH_SPARSEMEM_DEFAULT
279 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
280 computer. These are credit-card size devices such as network cards,
281 modems or hard drives often used with laptops computers. There are
282 actually two varieties of these cards: the older 16 bit PCMCIA cards
283 and the newer 32 bit CardBus cards. If you want to use CardBus
284 cards, you need to say Y here and also to "CardBus support" below.
286 To use your PC-cards, you will need supporting software from David
287 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
288 for location). Please also read the PCMCIA-HOWTO, available from
289 <http://www.tldp.org/docs.html#howto>.
291 To compile this driver as modules, choose M here: the
292 modules will be called pcmcia_core and ds.
311 bool "Sun Logical Domains support"
313 Say Y here is you want to support virtual devices via
318 select ARCH_SUPPORTS_MSI
320 Find out whether your system includes a PCI bus. PCI is the name of
321 a bus system, i.e. the way the CPU talks to the other stuff inside
322 your box. If you say Y here, the kernel will include drivers and
323 infrastructure code to support PCI bus devices.
331 source "drivers/pci/Kconfig"
333 config SUN_OPENPROMFS
334 tristate "Openprom tree appears in /proc/openprom"
336 If you say Y, the OpenPROM device tree will be available as a
337 virtual file system, which you can mount to /proc/openprom by "mount
338 -t openpromfs none /proc/openprom".
340 To compile the /proc/openprom support as a module, choose M here: the
341 module will be called openpromfs. If unsure, choose M.
343 menu "Executable file formats"
345 source "fs/Kconfig.binfmt"
350 select COMPAT_BINFMT_ELF
352 config SYSVIPC_COMPAT
354 depends on COMPAT && SYSVIPC
360 bool "SMT (Hyperthreading) scheduler support"
364 SMT scheduler support improves the CPU scheduler's decision making
365 when dealing with SPARC cpus at a cost of slightly increased overhead
366 in some places. If unsure say N here.
369 bool "Multi-core scheduler support"
373 Multi-core scheduler support improves the CPU scheduler's decision
374 making when dealing with multi-core CPU chips at a cost of slightly
375 increased overhead in some places. If unsure say N here.
377 source "kernel/Kconfig.preempt"
380 bool "Default bootloader kernel arguments"
383 string "Initial kernel command string"
384 depends on CMDLINE_BOOL
385 default "console=ttyS0,9600 root=/dev/sda1"
387 Say Y here if you want to be able to pass default arguments to
388 the kernel. This will be overridden by the bootloader, if you
389 use one (such as SILO). This is most useful if you want to boot
390 a kernel from TFTP, and want default options to be available
391 with having them passed on the command line.
393 NOTE: This option WILL override the PROM bootargs setting!
397 source "drivers/Kconfig"
399 source "drivers/sbus/char/Kconfig"
403 source "arch/sparc64/Kconfig.debug"
405 source "security/Kconfig"
407 source "crypto/Kconfig"