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
25 config GENERIC_CMOS_UPDATE
29 config GENERIC_CLOCKEVENTS
48 config STACKTRACE_SUPPORT
52 config LOCKDEP_SUPPORT
56 config ARCH_MAY_HAVE_PC_FDC
60 config ARCH_HAS_ILOG2_U32
64 config ARCH_HAS_ILOG2_U64
72 config HAVE_SETUP_PER_CPU_AREA
75 config ARCH_NO_VIRT_TO_BUS
81 config GENERIC_HARDIRQS_NO__DO_IRQ
87 menu "Processor type and features"
90 prompt "Kernel page size"
91 default SPARC64_PAGE_SIZE_8KB
93 config SPARC64_PAGE_SIZE_8KB
96 This lets you select the page size of the kernel.
98 8KB and 64KB work quite well, since SPARC ELF sections
99 provide for up to 64KB alignment.
101 If you don't know what to do, choose 8KB.
103 config SPARC64_PAGE_SIZE_64KB
109 bool "Enable seccomp to safely compute untrusted bytecode"
113 This kernel feature is useful for number crunching applications
114 that may need to compute untrusted bytecode during their
115 execution. By using pipes or other transports made available to
116 the process as file descriptors supporting the read/write
117 syscalls, it's possible to isolate those applications in
118 their own address space using seccomp. Once seccomp is
119 enabled via /proc/<pid>/seccomp, it cannot be disabled
120 and the task is only allowed to execute a few safe syscalls
121 defined by each seccomp mode.
123 If unsure, say Y. Only embedded should say N here.
125 source kernel/Kconfig.hz
128 bool "Support for hot-pluggable CPUs"
132 Say Y here to experiment with turning CPUs off and on. CPUs
133 can be controlled through /sys/devices/system/cpu/cpu#.
134 Say N if you want to disable CPU hotplug.
136 config GENERIC_HARDIRQS
140 source "kernel/time/Kconfig"
143 bool "Symmetric multi-processing support"
145 This enables support for systems with more than one CPU. If you have
146 a system with only one CPU, say N. If you have a system with more than
149 If you say N here, the kernel will run on single and multiprocessor
150 machines, but will use only one CPU of a multiprocessor machine. If
151 you say Y here, the kernel will run on single-processor machines.
152 On a single-processor machine, the kernel will run faster if you say
155 If you don't know what to do here, say N.
158 int "Maximum number of CPUs (2-1024)"
163 source "drivers/cpufreq/Kconfig"
166 tristate "UltraSPARC-III CPU Frequency driver"
168 select CPU_FREQ_TABLE
170 This adds the CPUFreq driver for UltraSPARC-III processors.
172 For details, take a look at <file:Documentation/cpu-freq>.
177 tristate "UltraSPARC-IIe CPU Frequency driver"
179 select CPU_FREQ_TABLE
181 This adds the CPUFreq driver for UltraSPARC-IIe processors.
183 For details, take a look at <file:Documentation/cpu-freq>.
187 # Global things across all Sun machines.
188 config GENERIC_LOCKBREAK
191 depends on SMP && PREEMPT
193 config RWSEM_GENERIC_SPINLOCK
196 config RWSEM_XCHGADD_ALGORITHM
200 config GENERIC_FIND_NEXT_BIT
204 config GENERIC_HWEIGHT
206 default y if !ULTRA_HAS_POPULATION_COUNT
208 config GENERIC_CALIBRATE_DELAY
213 prompt "SPARC64 Huge TLB Page Size"
214 depends on HUGETLB_PAGE
215 default HUGETLB_PAGE_SIZE_4MB
217 config HUGETLB_PAGE_SIZE_4MB
220 config HUGETLB_PAGE_SIZE_512K
223 config HUGETLB_PAGE_SIZE_64K
224 depends on !SPARC64_PAGE_SIZE_64KB
237 depends on NEED_MULTIPLE_NODES
239 # Some NUMA nodes have memory ranges that span
240 # other nodes. Even though a pfn is valid and
241 # between a node's start and end pfns, it may not
242 # reside on that node. See memmap_init_zone()
244 config NODES_SPAN_OTHER_NODES
246 depends on NEED_MULTIPLE_NODES
248 config ARCH_POPULATES_NODE_MAP
251 config ARCH_SELECT_MEMORY_MODEL
254 config ARCH_SPARSEMEM_ENABLE
256 select SPARSEMEM_VMEMMAP_ENABLE
258 config ARCH_SPARSEMEM_DEFAULT
278 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
279 computer. These are credit-card size devices such as network cards,
280 modems or hard drives often used with laptops computers. There are
281 actually two varieties of these cards: the older 16 bit PCMCIA cards
282 and the newer 32 bit CardBus cards. If you want to use CardBus
283 cards, you need to say Y here and also to "CardBus support" below.
285 To use your PC-cards, you will need supporting software from David
286 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
287 for location). Please also read the PCMCIA-HOWTO, available from
288 <http://www.tldp.org/docs.html#howto>.
290 To compile this driver as modules, choose M here: the
291 modules will be called pcmcia_core and ds.
310 bool "Sun Logical Domains support"
312 Say Y here is you want to support virtual devices via
317 select ARCH_SUPPORTS_MSI
319 Find out whether your system includes a PCI bus. PCI is the name of
320 a bus system, i.e. the way the CPU talks to the other stuff inside
321 your box. If you say Y here, the kernel will include drivers and
322 infrastructure code to support PCI bus devices.
330 source "drivers/pci/Kconfig"
332 config SUN_OPENPROMFS
333 tristate "Openprom tree appears in /proc/openprom"
335 If you say Y, the OpenPROM device tree will be available as a
336 virtual file system, which you can mount to /proc/openprom by "mount
337 -t openpromfs none /proc/openprom".
339 To compile the /proc/openprom support as a module, choose M here: the
340 module will be called openpromfs. If unsure, choose M.
342 menu "Executable file formats"
344 source "fs/Kconfig.binfmt"
349 select COMPAT_BINFMT_ELF
351 config SYSVIPC_COMPAT
353 depends on COMPAT && SYSVIPC
359 bool "SMT (Hyperthreading) scheduler support"
363 SMT scheduler support improves the CPU scheduler's decision making
364 when dealing with SPARC cpus at a cost of slightly increased overhead
365 in some places. If unsure say N here.
368 bool "Multi-core scheduler support"
372 Multi-core scheduler support improves the CPU scheduler's decision
373 making when dealing with multi-core CPU chips at a cost of slightly
374 increased overhead in some places. If unsure say N here.
376 source "kernel/Kconfig.preempt"
379 bool "Default bootloader kernel arguments"
382 string "Initial kernel command string"
383 depends on CMDLINE_BOOL
384 default "console=ttyS0,9600 root=/dev/sda1"
386 Say Y here if you want to be able to pass default arguments to
387 the kernel. This will be overridden by the bootloader, if you
388 use one (such as SILO). This is most useful if you want to boot
389 a kernel from TFTP, and want default options to be available
390 with having them passed on the command line.
392 NOTE: This option WILL override the PROM bootargs setting!
396 source "drivers/Kconfig"
398 source "drivers/sbus/char/Kconfig"
402 source "arch/sparc64/Kconfig.debug"
404 source "security/Kconfig"
406 source "crypto/Kconfig"