1 # sparc64 configuration
2 mainmenu "Linux Kernel Configuration for 64-bit SPARC"
14 select HAVE_FUNCTION_TRACER
18 select USE_GENERIC_SMP_HELPERS if SMP
19 select HAVE_ARCH_TRACEHOOK
20 select ARCH_WANT_OPTIONAL_GPIOLIB
26 select RTC_DRV_STARFIRE
32 config GENERIC_CMOS_UPDATE
36 config GENERIC_CLOCKEVENTS
43 Generic GPIO API support
60 config STACKTRACE_SUPPORT
64 config LOCKDEP_SUPPORT
68 config ARCH_MAY_HAVE_PC_FDC
72 config ARCH_HAS_ILOG2_U32
76 config ARCH_HAS_ILOG2_U64
84 config HAVE_SETUP_PER_CPU_AREA
87 config ARCH_NO_VIRT_TO_BUS
93 config GENERIC_HARDIRQS_NO__DO_IRQ
98 source "kernel/Kconfig.freezer"
100 menu "Processor type and features"
103 prompt "Kernel page size"
104 default SPARC64_PAGE_SIZE_8KB
106 config SPARC64_PAGE_SIZE_8KB
109 This lets you select the page size of the kernel.
111 8KB and 64KB work quite well, since SPARC ELF sections
112 provide for up to 64KB alignment.
114 If you don't know what to do, choose 8KB.
116 config SPARC64_PAGE_SIZE_64KB
122 bool "Enable seccomp to safely compute untrusted bytecode"
126 This kernel feature is useful for number crunching applications
127 that may need to compute untrusted bytecode during their
128 execution. By using pipes or other transports made available to
129 the process as file descriptors supporting the read/write
130 syscalls, it's possible to isolate those applications in
131 their own address space using seccomp. Once seccomp is
132 enabled via /proc/<pid>/seccomp, it cannot be disabled
133 and the task is only allowed to execute a few safe syscalls
134 defined by each seccomp mode.
136 If unsure, say Y. Only embedded should say N here.
138 source kernel/Kconfig.hz
141 bool "Support for hot-pluggable CPUs"
145 Say Y here to experiment with turning CPUs off and on. CPUs
146 can be controlled through /sys/devices/system/cpu/cpu#.
147 Say N if you want to disable CPU hotplug.
149 config GENERIC_HARDIRQS
153 source "kernel/time/Kconfig"
156 bool "Symmetric multi-processing support"
158 This enables support for systems with more than one CPU. If you have
159 a system with only one CPU, say N. If you have a system with more than
162 If you say N here, the kernel will run on single and multiprocessor
163 machines, but will use only one CPU of a multiprocessor machine. If
164 you say Y here, the kernel will run on single-processor machines.
165 On a single-processor machine, the kernel will run faster if you say
168 If you don't know what to do here, say N.
171 int "Maximum number of CPUs (2-1024)"
176 source "drivers/cpufreq/Kconfig"
179 tristate "UltraSPARC-III CPU Frequency driver"
181 select CPU_FREQ_TABLE
183 This adds the CPUFreq driver for UltraSPARC-III processors.
185 For details, take a look at <file:Documentation/cpu-freq>.
190 tristate "UltraSPARC-IIe CPU Frequency driver"
192 select CPU_FREQ_TABLE
194 This adds the CPUFreq driver for UltraSPARC-IIe processors.
196 For details, take a look at <file:Documentation/cpu-freq>.
201 tristate "UltraSPARC-III Memory Controller driver"
204 This adds a driver for the UltraSPARC-III memory controller.
205 Loading this driver allows exact mnemonic strings to be
206 printed in the event of a memory error, so that the faulty DIMM
207 on the motherboard can be matched to the error.
209 If in doubt, say Y, as this information can be very useful.
211 # Global things across all Sun machines.
212 config GENERIC_LOCKBREAK
215 depends on SMP && PREEMPT
217 config RWSEM_GENERIC_SPINLOCK
220 config RWSEM_XCHGADD_ALGORITHM
224 config GENERIC_FIND_NEXT_BIT
228 config GENERIC_HWEIGHT
230 default y if !ULTRA_HAS_POPULATION_COUNT
232 config GENERIC_CALIBRATE_DELAY
237 prompt "SPARC64 Huge TLB Page Size"
238 depends on HUGETLB_PAGE
239 default HUGETLB_PAGE_SIZE_4MB
241 config HUGETLB_PAGE_SIZE_4MB
244 config HUGETLB_PAGE_SIZE_512K
247 config HUGETLB_PAGE_SIZE_64K
248 depends on !SPARC64_PAGE_SIZE_64KB
260 depends on NEED_MULTIPLE_NODES
262 # Some NUMA nodes have memory ranges that span
263 # other nodes. Even though a pfn is valid and
264 # between a node's start and end pfns, it may not
265 # reside on that node. See memmap_init_zone()
267 config NODES_SPAN_OTHER_NODES
269 depends on NEED_MULTIPLE_NODES
271 config ARCH_POPULATES_NODE_MAP
274 config ARCH_SELECT_MEMORY_MODEL
277 config ARCH_SPARSEMEM_ENABLE
279 select SPARSEMEM_VMEMMAP_ENABLE
281 config ARCH_SPARSEMEM_DEFAULT
287 bool "SMT (Hyperthreading) scheduler support"
291 SMT scheduler support improves the CPU scheduler's decision making
292 when dealing with SPARC cpus at a cost of slightly increased overhead
293 in some places. If unsure say N here.
296 bool "Multi-core scheduler support"
300 Multi-core scheduler support improves the CPU scheduler's decision
301 making when dealing with multi-core CPU chips at a cost of slightly
302 increased overhead in some places. If unsure say N here.
304 source "kernel/Kconfig.preempt"
307 bool "Default bootloader kernel arguments"
310 string "Initial kernel command string"
311 depends on CMDLINE_BOOL
312 default "console=ttyS0,9600 root=/dev/sda1"
314 Say Y here if you want to be able to pass default arguments to
315 the kernel. This will be overridden by the bootloader, if you
316 use one (such as SILO). This is most useful if you want to boot
317 a kernel from TFTP, and want default options to be available
318 with having them passed on the command line.
320 NOTE: This option WILL override the PROM bootargs setting!
324 menu "Bus options (PCI etc.)"
341 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
342 computer. These are credit-card size devices such as network cards,
343 modems or hard drives often used with laptops computers. There are
344 actually two varieties of these cards: the older 16 bit PCMCIA cards
345 and the newer 32 bit CardBus cards. If you want to use CardBus
346 cards, you need to say Y here and also to "CardBus support" below.
348 To use your PC-cards, you will need supporting software from David
349 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
350 for location). Please also read the PCMCIA-HOWTO, available from
351 <http://www.tldp.org/docs.html#howto>.
353 To compile this driver as modules, choose M here: the
354 modules will be called pcmcia_core and ds.
373 bool "Sun Logical Domains support"
375 Say Y here is you want to support virtual devices via
380 select ARCH_SUPPORTS_MSI
382 Find out whether your system includes a PCI bus. PCI is the name of
383 a bus system, i.e. the way the CPU talks to the other stuff inside
384 your box. If you say Y here, the kernel will include drivers and
385 infrastructure code to support PCI bus devices.
393 source "drivers/pci/Kconfig"
395 config SUN_OPENPROMFS
396 tristate "Openprom tree appears in /proc/openprom"
398 If you say Y, the OpenPROM device tree will be available as a
399 virtual file system, which you can mount to /proc/openprom by "mount
400 -t openpromfs none /proc/openprom".
402 To compile the /proc/openprom support as a module, choose M here: the
403 module will be called openpromfs. If unsure, choose M.
407 menu "Executable file formats"
409 source "fs/Kconfig.binfmt"
414 select COMPAT_BINFMT_ELF
416 config SYSVIPC_COMPAT
418 depends on COMPAT && SYSVIPC
425 source "drivers/Kconfig"
427 source "drivers/sbus/char/Kconfig"
431 source "arch/sparc/Kconfig.debug"
433 source "security/Kconfig"
435 source "crypto/Kconfig"