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"
18 SPARC is a family of RISC microprocessors designed and marketed by
19 Sun Microsystems, incorporated. This port covers the newer 64-bit
20 UltraSPARC. The UltraLinux project maintains both the SPARC32 and
21 SPARC64 ports; its web page is available at
22 <http://www.ultralinux.org/>.
28 config GENERIC_CMOS_UPDATE
32 config GENERIC_CLOCKEVENTS
47 config STACKTRACE_SUPPORT
51 config LOCKDEP_SUPPORT
55 config ARCH_MAY_HAVE_PC_FDC
59 config ARCH_HAS_ILOG2_U32
63 config ARCH_HAS_ILOG2_U64
71 config HAVE_SETUP_PER_CPU_AREA
74 config ARCH_NO_VIRT_TO_BUS
80 config GENERIC_HARDIRQS_NO__DO_IRQ
84 config ARCH_SUPPORTS_AOUT
88 prompt "Kernel page size"
89 default SPARC64_PAGE_SIZE_8KB
91 config SPARC64_PAGE_SIZE_8KB
94 This lets you select the page size of the kernel.
96 8KB and 64KB work quite well, since Sparc ELF sections
97 provide for up to 64KB alignment.
99 Therefore, 512KB and 4MB are for expert hackers only.
101 If you don't know what to do, choose 8KB.
103 config SPARC64_PAGE_SIZE_64KB
106 config SPARC64_PAGE_SIZE_512KB
109 config SPARC64_PAGE_SIZE_4MB
115 bool "Enable seccomp to safely compute untrusted bytecode"
119 This kernel feature is useful for number crunching applications
120 that may need to compute untrusted bytecode during their
121 execution. By using pipes or other transports made available to
122 the process as file descriptors supporting the read/write
123 syscalls, it's possible to isolate those applications in
124 their own address space using seccomp. Once seccomp is
125 enabled via /proc/<pid>/seccomp, it cannot be disabled
126 and the task is only allowed to execute a few safe syscalls
127 defined by each seccomp mode.
129 If unsure, say Y. Only embedded should say N here.
131 source kernel/Kconfig.hz
134 bool "Support for hot-pluggable CPUs"
138 Say Y here to experiment with turning CPUs off and on. CPUs
139 can be controlled through /sys/devices/system/cpu/cpu#.
140 Say N if you want to disable CPU hotplug.
142 source "init/Kconfig"
144 config SYSVIPC_COMPAT
146 depends on COMPAT && SYSVIPC
149 config GENERIC_HARDIRQS
153 menu "General machine setup"
155 source "kernel/time/Kconfig"
158 bool "Symmetric multi-processing support"
160 This enables support for systems with more than one CPU. If you have
161 a system with only one CPU, say N. If you have a system with more than
164 If you say N here, the kernel will run on single and multiprocessor
165 machines, but will use only one CPU of a multiprocessor machine. If
166 you say Y here, the kernel will run on many, but not all,
167 singleprocessor machines. On a singleprocessor machine, the kernel
168 will run faster if you say N here.
170 People using multiprocessor machines who say Y here should also say
171 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
172 Management" code will be disabled if you say Y here.
174 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
175 available at <http://www.tldp.org/docs.html#howto>.
177 If you don't know what to do here, say N.
180 int "Maximum number of CPUs (2-1024)"
185 source "drivers/cpufreq/Kconfig"
188 tristate "UltraSPARC-III CPU Frequency driver"
190 select CPU_FREQ_TABLE
192 This adds the CPUFreq driver for UltraSPARC-III processors.
194 For details, take a look at <file:Documentation/cpu-freq>.
199 tristate "UltraSPARC-IIe CPU Frequency driver"
201 select CPU_FREQ_TABLE
203 This adds the CPUFreq driver for UltraSPARC-IIe processors.
205 For details, take a look at <file:Documentation/cpu-freq>.
209 # Global things across all Sun machines.
210 config GENERIC_LOCKBREAK
213 depends on SMP && PREEMPT
215 config RWSEM_GENERIC_SPINLOCK
218 config RWSEM_XCHGADD_ALGORITHM
222 config GENERIC_FIND_NEXT_BIT
226 config GENERIC_HWEIGHT
228 default y if !ULTRA_HAS_POPULATION_COUNT
230 config GENERIC_CALIBRATE_DELAY
235 prompt "SPARC64 Huge TLB Page Size"
236 depends on HUGETLB_PAGE
237 default HUGETLB_PAGE_SIZE_4MB
239 config HUGETLB_PAGE_SIZE_4MB
242 config HUGETLB_PAGE_SIZE_512K
243 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
246 config HUGETLB_PAGE_SIZE_64K
247 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
254 config ARCH_SELECT_MEMORY_MODEL
257 config ARCH_SPARSEMEM_ENABLE
259 select SPARSEMEM_VMEMMAP_ENABLE
261 config ARCH_SPARSEMEM_DEFAULT
269 Find out whether you have ISA slots on your motherboard. ISA is the
270 name of a bus system, i.e. the way the CPU talks to the other stuff
271 inside your box. Other bus systems are PCI, EISA, MicroChannel
272 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
273 newer boards don't support it. If you have ISA, say Y, otherwise N.
278 Say Y here if you would like support for ISA Plug and Play devices.
279 Some information is in <file:Documentation/isapnp.txt>.
281 To compile this driver as a module, choose M here: the
282 module will be called isapnp.
289 The Extended Industry Standard Architecture (EISA) bus was
290 developed as an open alternative to the IBM MicroChannel bus.
292 The EISA bus provided some of the features of the IBM MicroChannel
293 bus while maintaining backward compatibility with cards made for
294 the older ISA bus. The EISA bus saw limited use between 1988 and
295 1995 when it was made obsolete by the PCI bus.
297 Say Y here if you are building a kernel for an EISA-based machine.
304 MicroChannel Architecture is found in some IBM PS/2 machines and
305 laptops. It is a bus system similar to PCI or ISA. See
306 <file:Documentation/mca.txt> (and especially the web page given
307 there) before attempting to build an MCA bus kernel.
312 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
313 computer. These are credit-card size devices such as network cards,
314 modems or hard drives often used with laptops computers. There are
315 actually two varieties of these cards: the older 16 bit PCMCIA cards
316 and the newer 32 bit CardBus cards. If you want to use CardBus
317 cards, you need to say Y here and also to "CardBus support" below.
319 To use your PC-cards, you will need supporting software from David
320 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
321 for location). Please also read the PCMCIA-HOWTO, available from
322 <http://www.tldp.org/docs.html#howto>.
324 To compile this driver as modules, choose M here: the
325 modules will be called pcmcia_core and ds.
344 bool "Sun Logical Domains support"
346 Say Y here is you want to support virtual devices via
351 select ARCH_SUPPORTS_MSI
353 Find out whether you have a PCI motherboard. PCI is the name of a
354 bus system, i.e. the way the CPU talks to the other stuff inside
355 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
356 VESA. If you have PCI, say Y, otherwise N.
364 source "drivers/pci/Kconfig"
366 config SUN_OPENPROMFS
367 tristate "Openprom tree appears in /proc/openprom"
369 If you say Y, the OpenPROM device tree will be available as a
370 virtual file system, which you can mount to /proc/openprom by "mount
371 -t openpromfs none /proc/openprom".
373 To compile the /proc/openprom support as a module, choose M here: the
374 module will be called openpromfs. If unsure, choose M.
376 config SPARC32_COMPAT
377 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
379 This allows you to run 32-bit binaries on your Ultra.
380 Everybody wants this; say Y.
384 depends on SPARC32_COMPAT
388 bool "Kernel support for 32-bit ELF binaries"
389 depends on SPARC32_COMPAT
391 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
392 Everybody wants this; say Y.
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"