1 # $Id: config.in,v 1.158 2002/01/24 22:14:44 davem Exp $
2 # For a description of the syntax of this configuration file,
3 # see the Configure script.
6 mainmenu "Linux/UltraSPARC Kernel Configuration"
16 SPARC is a family of RISC microprocessors designed and marketed by
17 Sun Microsystems, incorporated. This port covers the newer 64-bit
18 UltraSPARC. The UltraLinux project maintains both the SPARC32 and
19 SPARC64 ports; its web page is available at
20 <http://www.ultralinux.org/>.
26 config GENERIC_CMOS_UPDATE
30 config GENERIC_CLOCKEVENTS
45 config STACKTRACE_SUPPORT
49 config LOCKDEP_SUPPORT
53 config ARCH_MAY_HAVE_PC_FDC
57 config ARCH_HAS_ILOG2_U32
61 config ARCH_HAS_ILOG2_U64
69 config ARCH_NO_VIRT_TO_BUS
75 config GENERIC_HARDIRQS_NO__DO_IRQ
80 prompt "Kernel page size"
81 default SPARC64_PAGE_SIZE_8KB
83 config SPARC64_PAGE_SIZE_8KB
86 This lets you select the page size of the kernel.
88 8KB and 64KB work quite well, since Sparc ELF sections
89 provide for up to 64KB alignment.
91 Therefore, 512KB and 4MB are for expert hackers only.
93 If you don't know what to do, choose 8KB.
95 config SPARC64_PAGE_SIZE_64KB
98 config SPARC64_PAGE_SIZE_512KB
101 config SPARC64_PAGE_SIZE_4MB
107 bool "Enable seccomp to safely compute untrusted bytecode"
111 This kernel feature is useful for number crunching applications
112 that may need to compute untrusted bytecode during their
113 execution. By using pipes or other transports made available to
114 the process as file descriptors supporting the read/write
115 syscalls, it's possible to isolate those applications in
116 their own address space using seccomp. Once seccomp is
117 enabled via /proc/<pid>/seccomp, it cannot be disabled
118 and the task is only allowed to execute a few safe syscalls
119 defined by each seccomp mode.
121 If unsure, say Y. Only embedded should say N here.
123 source kernel/Kconfig.hz
126 bool "Support for hot-pluggable CPUs"
130 Say Y here to experiment with turning CPUs off and on. CPUs
131 can be controlled through /sys/devices/system/cpu/cpu#.
132 Say N if you want to disable CPU hotplug.
134 source "init/Kconfig"
136 config SYSVIPC_COMPAT
138 depends on COMPAT && SYSVIPC
141 config GENERIC_HARDIRQS
145 menu "General machine setup"
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 many, but not all,
159 singleprocessor machines. On a singleprocessor machine, the kernel
160 will run faster if you say N here.
162 People using multiprocessor machines who say Y here should also say
163 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
164 Management" code will be disabled if you say Y here.
166 See also the <file:Documentation/smp.txt>,
167 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
168 <http://www.tldp.org/docs.html#howto>.
170 If you don't know what to do here, say N.
173 int "Maximum number of CPUs (2-1024)"
178 source "drivers/cpufreq/Kconfig"
181 tristate "UltraSPARC-III CPU Frequency driver"
183 select CPU_FREQ_TABLE
185 This adds the CPUFreq driver for UltraSPARC-III processors.
187 For details, take a look at <file:Documentation/cpu-freq>.
192 tristate "UltraSPARC-IIe CPU Frequency driver"
194 select CPU_FREQ_TABLE
196 This adds the CPUFreq driver for UltraSPARC-IIe processors.
198 For details, take a look at <file:Documentation/cpu-freq>.
202 # Global things across all Sun machines.
203 config RWSEM_GENERIC_SPINLOCK
206 config RWSEM_XCHGADD_ALGORITHM
210 config GENERIC_FIND_NEXT_BIT
214 config GENERIC_HWEIGHT
216 default y if !ULTRA_HAS_POPULATION_COUNT
218 config GENERIC_CALIBRATE_DELAY
223 prompt "SPARC64 Huge TLB Page Size"
224 depends on HUGETLB_PAGE
225 default HUGETLB_PAGE_SIZE_4MB
227 config HUGETLB_PAGE_SIZE_4MB
230 config HUGETLB_PAGE_SIZE_512K
231 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
234 config HUGETLB_PAGE_SIZE_64K
235 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
242 config ARCH_SELECT_MEMORY_MODEL
245 config ARCH_SPARSEMEM_ENABLE
247 select SPARSEMEM_VMEMMAP_ENABLE
249 config ARCH_SPARSEMEM_DEFAULT
257 Find out whether you have ISA slots on your motherboard. ISA is the
258 name of a bus system, i.e. the way the CPU talks to the other stuff
259 inside your box. Other bus systems are PCI, EISA, MicroChannel
260 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
261 newer boards don't support it. If you have ISA, say Y, otherwise N.
266 Say Y here if you would like support for ISA Plug and Play devices.
267 Some information is in <file:Documentation/isapnp.txt>.
269 To compile this driver as a module, choose M here: the
270 module will be called isapnp.
277 The Extended Industry Standard Architecture (EISA) bus was
278 developed as an open alternative to the IBM MicroChannel bus.
280 The EISA bus provided some of the features of the IBM MicroChannel
281 bus while maintaining backward compatibility with cards made for
282 the older ISA bus. The EISA bus saw limited use between 1988 and
283 1995 when it was made obsolete by the PCI bus.
285 Say Y here if you are building a kernel for an EISA-based machine.
292 MicroChannel Architecture is found in some IBM PS/2 machines and
293 laptops. It is a bus system similar to PCI or ISA. See
294 <file:Documentation/mca.txt> (and especially the web page given
295 there) before attempting to build an MCA bus kernel.
300 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
301 computer. These are credit-card size devices such as network cards,
302 modems or hard drives often used with laptops computers. There are
303 actually two varieties of these cards: the older 16 bit PCMCIA cards
304 and the newer 32 bit CardBus cards. If you want to use CardBus
305 cards, you need to say Y here and also to "CardBus support" below.
307 To use your PC-cards, you will need supporting software from David
308 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
309 for location). Please also read the PCMCIA-HOWTO, available from
310 <http://www.tldp.org/docs.html#howto>.
312 To compile this driver as modules, choose M here: the
313 modules will be called pcmcia_core and ds.
332 bool "Sun Logical Domains support"
334 Say Y here is you want to support virtual devices via
339 select ARCH_SUPPORTS_MSI
341 Find out whether you have a PCI motherboard. PCI is the name of a
342 bus system, i.e. the way the CPU talks to the other stuff inside
343 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
344 VESA. If you have PCI, say Y, otherwise N.
346 The PCI-HOWTO, available from
347 <http://www.tldp.org/docs.html#howto>, contains valuable
348 information about which PCI hardware does work under Linux and which
357 source "drivers/pci/Kconfig"
359 config SUN_OPENPROMFS
360 tristate "Openprom tree appears in /proc/openprom"
362 If you say Y, the OpenPROM device tree will be available as a
363 virtual file system, which you can mount to /proc/openprom by "mount
364 -t openpromfs none /proc/openprom".
366 To compile the /proc/openprom support as a module, choose M here: the
367 module will be called openpromfs. If unsure, choose M.
369 config SPARC32_COMPAT
370 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
372 This allows you to run 32-bit binaries on your Ultra.
373 Everybody wants this; say Y.
377 depends on SPARC32_COMPAT
381 bool "Kernel support for 32-bit ELF binaries"
382 depends on SPARC32_COMPAT
384 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
385 Everybody wants this; say Y.
388 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
389 depends on SPARC32_COMPAT
391 This allows you to run 32-bit a.out format binaries on your Ultra.
392 If you want to run SunOS binaries (see SunOS binary emulation below)
393 or other a.out binaries, say Y. If unsure, say N.
395 menu "Executable file formats"
397 source "fs/Kconfig.binfmt"
400 bool "SunOS binary emulation"
401 depends on BINFMT_AOUT32
403 This allows you to run most SunOS binaries. If you want to do this,
404 say Y here and place appropriate files in /usr/gnemul/sunos. See
405 <http://www.ultralinux.org/faq.html> for more information. If you
406 want to run SunOS binaries on an Ultra you must also say Y to
407 "Kernel support for 32-bit a.out binaries" above.
410 tristate "Solaris binary emulation (EXPERIMENTAL)"
411 depends on SPARC32_COMPAT && NET && EXPERIMENTAL
413 This is experimental code which will enable you to run (many)
414 Solaris binaries on your SPARC Linux machine.
416 To compile this code as a module, choose M here: the
417 module will be called solaris.
422 bool "SMT (Hyperthreading) scheduler support"
426 SMT scheduler support improves the CPU scheduler's decision making
427 when dealing with UltraSPARC cpus at a cost of slightly increased
428 overhead in some places. If unsure say N here.
431 bool "Multi-core scheduler support"
435 Multi-core scheduler support improves the CPU scheduler's decision
436 making when dealing with multi-core CPU chips at a cost of slightly
437 increased overhead in some places. If unsure say N here.
439 source "kernel/Kconfig.preempt"
442 bool "Default bootloader kernel arguments"
445 string "Initial kernel command string"
446 depends on CMDLINE_BOOL
447 default "console=ttyS0,9600 root=/dev/sda1"
449 Say Y here if you want to be able to pass default arguments to
450 the kernel. This will be overridden by the bootloader, if you
451 use one (such as SILO). This is most useful if you want to boot
452 a kernel from TFTP, and want default options to be available
453 with having them passed on the command line.
455 NOTE: This option WILL override the PROM bootargs setting!
459 source "drivers/Kconfig"
461 source "drivers/sbus/char/Kconfig"
465 source "kernel/Kconfig.instrumentation"
467 source "arch/sparc64/Kconfig.debug"
469 source "security/Kconfig"
471 source "crypto/Kconfig"