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
21 select ARCH_WANT_OPTIONAL_GPIOLIB
27 config GENERIC_CMOS_UPDATE
31 config GENERIC_CLOCKEVENTS
38 Generic GPIO API support
55 config STACKTRACE_SUPPORT
59 config LOCKDEP_SUPPORT
63 config ARCH_MAY_HAVE_PC_FDC
67 config ARCH_HAS_ILOG2_U32
71 config ARCH_HAS_ILOG2_U64
79 config HAVE_SETUP_PER_CPU_AREA
82 config ARCH_NO_VIRT_TO_BUS
88 config GENERIC_HARDIRQS_NO__DO_IRQ
94 menu "Processor type and features"
97 prompt "Kernel page size"
98 default SPARC64_PAGE_SIZE_8KB
100 config SPARC64_PAGE_SIZE_8KB
103 This lets you select the page size of the kernel.
105 8KB and 64KB work quite well, since SPARC ELF sections
106 provide for up to 64KB alignment.
108 If you don't know what to do, choose 8KB.
110 config SPARC64_PAGE_SIZE_64KB
116 bool "Enable seccomp to safely compute untrusted bytecode"
120 This kernel feature is useful for number crunching applications
121 that may need to compute untrusted bytecode during their
122 execution. By using pipes or other transports made available to
123 the process as file descriptors supporting the read/write
124 syscalls, it's possible to isolate those applications in
125 their own address space using seccomp. Once seccomp is
126 enabled via /proc/<pid>/seccomp, it cannot be disabled
127 and the task is only allowed to execute a few safe syscalls
128 defined by each seccomp mode.
130 If unsure, say Y. Only embedded should say N here.
132 source kernel/Kconfig.hz
135 bool "Support for hot-pluggable CPUs"
139 Say Y here to experiment with turning CPUs off and on. CPUs
140 can be controlled through /sys/devices/system/cpu/cpu#.
141 Say N if you want to disable CPU hotplug.
143 config GENERIC_HARDIRQS
147 source "kernel/time/Kconfig"
150 bool "Symmetric multi-processing support"
152 This enables support for systems with more than one CPU. If you have
153 a system with only one CPU, say N. If you have a system with more than
156 If you say N here, the kernel will run on single and multiprocessor
157 machines, but will use only one CPU of a multiprocessor machine. If
158 you say Y here, the kernel will run on single-processor machines.
159 On a single-processor machine, the kernel will run faster if you say
162 If you don't know what to do here, say N.
165 int "Maximum number of CPUs (2-1024)"
170 source "drivers/cpufreq/Kconfig"
173 tristate "UltraSPARC-III CPU Frequency driver"
175 select CPU_FREQ_TABLE
177 This adds the CPUFreq driver for UltraSPARC-III processors.
179 For details, take a look at <file:Documentation/cpu-freq>.
184 tristate "UltraSPARC-IIe CPU Frequency driver"
186 select CPU_FREQ_TABLE
188 This adds the CPUFreq driver for UltraSPARC-IIe processors.
190 For details, take a look at <file:Documentation/cpu-freq>.
195 tristate "UltraSPARC-III Memory Controller driver"
198 This adds a driver for the UltraSPARC-III memory controller.
199 Loading this driver allows exact mnemonic strings to be
200 printed in the event of a memory error, so that the faulty DIMM
201 on the motherboard can be matched to the error.
203 If in doubt, say Y, as this information can be very useful.
205 # Global things across all Sun machines.
206 config GENERIC_LOCKBREAK
209 depends on SMP && PREEMPT
211 config RWSEM_GENERIC_SPINLOCK
214 config RWSEM_XCHGADD_ALGORITHM
218 config GENERIC_FIND_NEXT_BIT
222 config GENERIC_HWEIGHT
224 default y if !ULTRA_HAS_POPULATION_COUNT
226 config GENERIC_CALIBRATE_DELAY
231 prompt "SPARC64 Huge TLB Page Size"
232 depends on HUGETLB_PAGE
233 default HUGETLB_PAGE_SIZE_4MB
235 config HUGETLB_PAGE_SIZE_4MB
238 config HUGETLB_PAGE_SIZE_512K
241 config HUGETLB_PAGE_SIZE_64K
242 depends on !SPARC64_PAGE_SIZE_64KB
255 depends on NEED_MULTIPLE_NODES
257 # Some NUMA nodes have memory ranges that span
258 # other nodes. Even though a pfn is valid and
259 # between a node's start and end pfns, it may not
260 # reside on that node. See memmap_init_zone()
262 config NODES_SPAN_OTHER_NODES
264 depends on NEED_MULTIPLE_NODES
266 config ARCH_POPULATES_NODE_MAP
269 config ARCH_SELECT_MEMORY_MODEL
272 config ARCH_SPARSEMEM_ENABLE
274 select SPARSEMEM_VMEMMAP_ENABLE
276 config ARCH_SPARSEMEM_DEFAULT
296 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
297 computer. These are credit-card size devices such as network cards,
298 modems or hard drives often used with laptops computers. There are
299 actually two varieties of these cards: the older 16 bit PCMCIA cards
300 and the newer 32 bit CardBus cards. If you want to use CardBus
301 cards, you need to say Y here and also to "CardBus support" below.
303 To use your PC-cards, you will need supporting software from David
304 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
305 for location). Please also read the PCMCIA-HOWTO, available from
306 <http://www.tldp.org/docs.html#howto>.
308 To compile this driver as modules, choose M here: the
309 modules will be called pcmcia_core and ds.
328 bool "Sun Logical Domains support"
330 Say Y here is you want to support virtual devices via
335 select ARCH_SUPPORTS_MSI
337 Find out whether your system includes a PCI bus. PCI is the name of
338 a bus system, i.e. the way the CPU talks to the other stuff inside
339 your box. If you say Y here, the kernel will include drivers and
340 infrastructure code to support PCI bus devices.
348 source "drivers/pci/Kconfig"
350 config SUN_OPENPROMFS
351 tristate "Openprom tree appears in /proc/openprom"
353 If you say Y, the OpenPROM device tree will be available as a
354 virtual file system, which you can mount to /proc/openprom by "mount
355 -t openpromfs none /proc/openprom".
357 To compile the /proc/openprom support as a module, choose M here: the
358 module will be called openpromfs. If unsure, choose M.
360 menu "Executable file formats"
362 source "fs/Kconfig.binfmt"
367 select COMPAT_BINFMT_ELF
369 config SYSVIPC_COMPAT
371 depends on COMPAT && SYSVIPC
377 bool "SMT (Hyperthreading) scheduler support"
381 SMT scheduler support improves the CPU scheduler's decision making
382 when dealing with SPARC cpus at a cost of slightly increased overhead
383 in some places. If unsure say N here.
386 bool "Multi-core scheduler support"
390 Multi-core scheduler support improves the CPU scheduler's decision
391 making when dealing with multi-core CPU chips at a cost of slightly
392 increased overhead in some places. If unsure say N here.
394 source "kernel/Kconfig.preempt"
397 bool "Default bootloader kernel arguments"
400 string "Initial kernel command string"
401 depends on CMDLINE_BOOL
402 default "console=ttyS0,9600 root=/dev/sda1"
404 Say Y here if you want to be able to pass default arguments to
405 the kernel. This will be overridden by the bootloader, if you
406 use one (such as SILO). This is most useful if you want to boot
407 a kernel from TFTP, and want default options to be available
408 with having them passed on the command line.
410 NOTE: This option WILL override the PROM bootargs setting!
414 source "drivers/Kconfig"
416 source "drivers/sbus/char/Kconfig"
420 source "arch/sparc64/Kconfig.debug"
422 source "security/Kconfig"
424 source "crypto/Kconfig"