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"
13 select HAVE_KRETPROBES
20 SPARC is a family of RISC microprocessors designed and marketed by
21 Sun Microsystems, incorporated. This port covers the newer 64-bit
22 UltraSPARC. The UltraLinux project maintains both the SPARC32 and
23 SPARC64 ports; its web page is available at
24 <http://www.ultralinux.org/>.
30 config GENERIC_CMOS_UPDATE
34 config GENERIC_CLOCKEVENTS
53 config STACKTRACE_SUPPORT
57 config LOCKDEP_SUPPORT
61 config ARCH_MAY_HAVE_PC_FDC
65 config ARCH_HAS_ILOG2_U32
69 config ARCH_HAS_ILOG2_U64
77 config HAVE_SETUP_PER_CPU_AREA
80 config ARCH_NO_VIRT_TO_BUS
86 config GENERIC_HARDIRQS_NO__DO_IRQ
90 config ARCH_SUPPORTS_AOUT
94 prompt "Kernel page size"
95 default SPARC64_PAGE_SIZE_8KB
97 config SPARC64_PAGE_SIZE_8KB
100 This lets you select the page size of the kernel.
102 8KB and 64KB work quite well, since Sparc ELF sections
103 provide for up to 64KB alignment.
105 Therefore, 512KB and 4MB are for expert hackers only.
107 If you don't know what to do, choose 8KB.
109 config SPARC64_PAGE_SIZE_64KB
112 config SPARC64_PAGE_SIZE_512KB
115 config SPARC64_PAGE_SIZE_4MB
121 bool "Enable seccomp to safely compute untrusted bytecode"
125 This kernel feature is useful for number crunching applications
126 that may need to compute untrusted bytecode during their
127 execution. By using pipes or other transports made available to
128 the process as file descriptors supporting the read/write
129 syscalls, it's possible to isolate those applications in
130 their own address space using seccomp. Once seccomp is
131 enabled via /proc/<pid>/seccomp, it cannot be disabled
132 and the task is only allowed to execute a few safe syscalls
133 defined by each seccomp mode.
135 If unsure, say Y. Only embedded should say N here.
137 source kernel/Kconfig.hz
140 bool "Support for hot-pluggable CPUs"
144 Say Y here to experiment with turning CPUs off and on. CPUs
145 can be controlled through /sys/devices/system/cpu/cpu#.
146 Say N if you want to disable CPU hotplug.
148 source "init/Kconfig"
150 config SYSVIPC_COMPAT
152 depends on COMPAT && SYSVIPC
155 config GENERIC_HARDIRQS
159 menu "General machine setup"
161 source "kernel/time/Kconfig"
164 bool "Symmetric multi-processing support"
166 This enables support for systems with more than one CPU. If you have
167 a system with only one CPU, say N. If you have a system with more than
170 If you say N here, the kernel will run on single and multiprocessor
171 machines, but will use only one CPU of a multiprocessor machine. If
172 you say Y here, the kernel will run on many, but not all,
173 singleprocessor machines. On a singleprocessor machine, the kernel
174 will run faster if you say N here.
176 People using multiprocessor machines who say Y here should also say
177 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
178 Management" code will be disabled if you say Y here.
180 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
181 available at <http://www.tldp.org/docs.html#howto>.
183 If you don't know what to do here, say N.
186 int "Maximum number of CPUs (2-1024)"
191 source "drivers/cpufreq/Kconfig"
194 tristate "UltraSPARC-III CPU Frequency driver"
196 select CPU_FREQ_TABLE
198 This adds the CPUFreq driver for UltraSPARC-III processors.
200 For details, take a look at <file:Documentation/cpu-freq>.
205 tristate "UltraSPARC-IIe CPU Frequency driver"
207 select CPU_FREQ_TABLE
209 This adds the CPUFreq driver for UltraSPARC-IIe processors.
211 For details, take a look at <file:Documentation/cpu-freq>.
215 # Global things across all Sun machines.
216 config GENERIC_LOCKBREAK
219 depends on SMP && PREEMPT
221 config RWSEM_GENERIC_SPINLOCK
224 config RWSEM_XCHGADD_ALGORITHM
228 config GENERIC_FIND_NEXT_BIT
232 config GENERIC_HWEIGHT
234 default y if !ULTRA_HAS_POPULATION_COUNT
236 config GENERIC_CALIBRATE_DELAY
241 prompt "SPARC64 Huge TLB Page Size"
242 depends on HUGETLB_PAGE
243 default HUGETLB_PAGE_SIZE_4MB
245 config HUGETLB_PAGE_SIZE_4MB
248 config HUGETLB_PAGE_SIZE_512K
249 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
252 config HUGETLB_PAGE_SIZE_64K
253 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
260 config ARCH_SELECT_MEMORY_MODEL
263 config ARCH_SPARSEMEM_ENABLE
265 select SPARSEMEM_VMEMMAP_ENABLE
267 config ARCH_SPARSEMEM_DEFAULT
275 Find out whether you have ISA slots on your motherboard. ISA is the
276 name of a bus system, i.e. the way the CPU talks to the other stuff
277 inside your box. Other bus systems are PCI, EISA, MicroChannel
278 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
279 newer boards don't support it. If you have ISA, say Y, otherwise N.
284 Say Y here if you would like support for ISA Plug and Play devices.
285 Some information is in <file:Documentation/isapnp.txt>.
287 To compile this driver as a module, choose M here: the
288 module will be called isapnp.
295 The Extended Industry Standard Architecture (EISA) bus was
296 developed as an open alternative to the IBM MicroChannel bus.
298 The EISA bus provided some of the features of the IBM MicroChannel
299 bus while maintaining backward compatibility with cards made for
300 the older ISA bus. The EISA bus saw limited use between 1988 and
301 1995 when it was made obsolete by the PCI bus.
303 Say Y here if you are building a kernel for an EISA-based machine.
310 MicroChannel Architecture is found in some IBM PS/2 machines and
311 laptops. It is a bus system similar to PCI or ISA. See
312 <file:Documentation/mca.txt> (and especially the web page given
313 there) before attempting to build an MCA bus kernel.
318 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
319 computer. These are credit-card size devices such as network cards,
320 modems or hard drives often used with laptops computers. There are
321 actually two varieties of these cards: the older 16 bit PCMCIA cards
322 and the newer 32 bit CardBus cards. If you want to use CardBus
323 cards, you need to say Y here and also to "CardBus support" below.
325 To use your PC-cards, you will need supporting software from David
326 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
327 for location). Please also read the PCMCIA-HOWTO, available from
328 <http://www.tldp.org/docs.html#howto>.
330 To compile this driver as modules, choose M here: the
331 modules will be called pcmcia_core and ds.
350 bool "Sun Logical Domains support"
352 Say Y here is you want to support virtual devices via
357 select ARCH_SUPPORTS_MSI
359 Find out whether you have a PCI motherboard. PCI is the name of a
360 bus system, i.e. the way the CPU talks to the other stuff inside
361 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
362 VESA. If you have PCI, say Y, otherwise N.
370 source "drivers/pci/Kconfig"
372 config SUN_OPENPROMFS
373 tristate "Openprom tree appears in /proc/openprom"
375 If you say Y, the OpenPROM device tree will be available as a
376 virtual file system, which you can mount to /proc/openprom by "mount
377 -t openpromfs none /proc/openprom".
379 To compile the /proc/openprom support as a module, choose M here: the
380 module will be called openpromfs. If unsure, choose M.
382 config SPARC32_COMPAT
383 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
385 This allows you to run 32-bit binaries on your Ultra.
386 Everybody wants this; say Y.
390 depends on SPARC32_COMPAT
392 select COMPAT_BINFMT_ELF
395 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
396 depends on SPARC32_COMPAT && ARCH_SUPPORTS_AOUT
398 This allows you to run 32-bit a.out format binaries on your Ultra.
399 If you want to run SunOS binaries (see SunOS binary emulation below)
400 or other a.out binaries, say Y. If unsure, say N.
402 menu "Executable file formats"
404 source "fs/Kconfig.binfmt"
407 bool "SunOS binary emulation"
408 depends on BINFMT_AOUT32
410 This allows you to run most SunOS binaries. If you want to do this,
411 say Y here and place appropriate files in /usr/gnemul/sunos. See
412 <http://www.ultralinux.org/faq.html> for more information. If you
413 want to run SunOS binaries on an Ultra you must also say Y to
414 "Kernel support for 32-bit a.out binaries" above.
417 tristate "Solaris binary emulation (EXPERIMENTAL)"
418 depends on SPARC32_COMPAT && NET && EXPERIMENTAL
420 This is experimental code which will enable you to run (many)
421 Solaris binaries on your SPARC Linux machine.
423 To compile this code as a module, choose M here: the
424 module will be called solaris.
429 bool "SMT (Hyperthreading) scheduler support"
433 SMT scheduler support improves the CPU scheduler's decision making
434 when dealing with UltraSPARC cpus at a cost of slightly increased
435 overhead in some places. If unsure say N here.
438 bool "Multi-core scheduler support"
442 Multi-core scheduler support improves the CPU scheduler's decision
443 making when dealing with multi-core CPU chips at a cost of slightly
444 increased overhead in some places. If unsure say N here.
446 source "kernel/Kconfig.preempt"
449 bool "Default bootloader kernel arguments"
452 string "Initial kernel command string"
453 depends on CMDLINE_BOOL
454 default "console=ttyS0,9600 root=/dev/sda1"
456 Say Y here if you want to be able to pass default arguments to
457 the kernel. This will be overridden by the bootloader, if you
458 use one (such as SILO). This is most useful if you want to boot
459 a kernel from TFTP, and want default options to be available
460 with having them passed on the command line.
462 NOTE: This option WILL override the PROM bootargs setting!
466 source "drivers/Kconfig"
468 source "drivers/sbus/char/Kconfig"
472 source "arch/sparc64/Kconfig.debug"
474 source "security/Kconfig"
476 source "crypto/Kconfig"