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
85 prompt "Kernel page size"
86 default SPARC64_PAGE_SIZE_8KB
88 config SPARC64_PAGE_SIZE_8KB
91 This lets you select the page size of the kernel.
93 8KB and 64KB work quite well, since Sparc ELF sections
94 provide for up to 64KB alignment.
96 Therefore, 512KB and 4MB are for expert hackers only.
98 If you don't know what to do, choose 8KB.
100 config SPARC64_PAGE_SIZE_64KB
103 config SPARC64_PAGE_SIZE_512KB
106 config SPARC64_PAGE_SIZE_4MB
112 bool "Enable seccomp to safely compute untrusted bytecode"
116 This kernel feature is useful for number crunching applications
117 that may need to compute untrusted bytecode during their
118 execution. By using pipes or other transports made available to
119 the process as file descriptors supporting the read/write
120 syscalls, it's possible to isolate those applications in
121 their own address space using seccomp. Once seccomp is
122 enabled via /proc/<pid>/seccomp, it cannot be disabled
123 and the task is only allowed to execute a few safe syscalls
124 defined by each seccomp mode.
126 If unsure, say Y. Only embedded should say N here.
128 source kernel/Kconfig.hz
131 bool "Support for hot-pluggable CPUs"
135 Say Y here to experiment with turning CPUs off and on. CPUs
136 can be controlled through /sys/devices/system/cpu/cpu#.
137 Say N if you want to disable CPU hotplug.
139 source "init/Kconfig"
141 config SYSVIPC_COMPAT
143 depends on COMPAT && SYSVIPC
146 config GENERIC_HARDIRQS
150 menu "General machine setup"
152 source "kernel/time/Kconfig"
155 bool "Symmetric multi-processing support"
157 This enables support for systems with more than one CPU. If you have
158 a system with only one CPU, say N. If you have a system with more than
161 If you say N here, the kernel will run on single and multiprocessor
162 machines, but will use only one CPU of a multiprocessor machine. If
163 you say Y here, the kernel will run on many, but not all,
164 singleprocessor machines. On a singleprocessor machine, the kernel
165 will run faster if you say N here.
167 People using multiprocessor machines who say Y here should also say
168 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
169 Management" code will be disabled if you say Y here.
171 See also the <file:Documentation/smp.txt>,
172 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
173 <http://www.tldp.org/docs.html#howto>.
175 If you don't know what to do here, say N.
178 int "Maximum number of CPUs (2-1024)"
183 source "drivers/cpufreq/Kconfig"
186 tristate "UltraSPARC-III CPU Frequency driver"
188 select CPU_FREQ_TABLE
190 This adds the CPUFreq driver for UltraSPARC-III processors.
192 For details, take a look at <file:Documentation/cpu-freq>.
197 tristate "UltraSPARC-IIe CPU Frequency driver"
199 select CPU_FREQ_TABLE
201 This adds the CPUFreq driver for UltraSPARC-IIe processors.
203 For details, take a look at <file:Documentation/cpu-freq>.
207 # Global things across all Sun machines.
208 config GENERIC_LOCKBREAK
211 depends on SMP && PREEMPT
213 config RWSEM_GENERIC_SPINLOCK
216 config RWSEM_XCHGADD_ALGORITHM
220 config GENERIC_FIND_NEXT_BIT
224 config GENERIC_HWEIGHT
226 default y if !ULTRA_HAS_POPULATION_COUNT
228 config GENERIC_CALIBRATE_DELAY
233 prompt "SPARC64 Huge TLB Page Size"
234 depends on HUGETLB_PAGE
235 default HUGETLB_PAGE_SIZE_4MB
237 config HUGETLB_PAGE_SIZE_4MB
240 config HUGETLB_PAGE_SIZE_512K
241 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
244 config HUGETLB_PAGE_SIZE_64K
245 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
252 config ARCH_SELECT_MEMORY_MODEL
255 config ARCH_SPARSEMEM_ENABLE
257 select SPARSEMEM_VMEMMAP_ENABLE
259 config ARCH_SPARSEMEM_DEFAULT
267 Find out whether you have ISA slots on your motherboard. ISA is the
268 name of a bus system, i.e. the way the CPU talks to the other stuff
269 inside your box. Other bus systems are PCI, EISA, MicroChannel
270 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
271 newer boards don't support it. If you have ISA, say Y, otherwise N.
276 Say Y here if you would like support for ISA Plug and Play devices.
277 Some information is in <file:Documentation/isapnp.txt>.
279 To compile this driver as a module, choose M here: the
280 module will be called isapnp.
287 The Extended Industry Standard Architecture (EISA) bus was
288 developed as an open alternative to the IBM MicroChannel bus.
290 The EISA bus provided some of the features of the IBM MicroChannel
291 bus while maintaining backward compatibility with cards made for
292 the older ISA bus. The EISA bus saw limited use between 1988 and
293 1995 when it was made obsolete by the PCI bus.
295 Say Y here if you are building a kernel for an EISA-based machine.
302 MicroChannel Architecture is found in some IBM PS/2 machines and
303 laptops. It is a bus system similar to PCI or ISA. See
304 <file:Documentation/mca.txt> (and especially the web page given
305 there) before attempting to build an MCA bus kernel.
310 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
311 computer. These are credit-card size devices such as network cards,
312 modems or hard drives often used with laptops computers. There are
313 actually two varieties of these cards: the older 16 bit PCMCIA cards
314 and the newer 32 bit CardBus cards. If you want to use CardBus
315 cards, you need to say Y here and also to "CardBus support" below.
317 To use your PC-cards, you will need supporting software from David
318 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
319 for location). Please also read the PCMCIA-HOWTO, available from
320 <http://www.tldp.org/docs.html#howto>.
322 To compile this driver as modules, choose M here: the
323 modules will be called pcmcia_core and ds.
342 bool "Sun Logical Domains support"
344 Say Y here is you want to support virtual devices via
349 select ARCH_SUPPORTS_MSI
351 Find out whether you have a PCI motherboard. PCI is the name of a
352 bus system, i.e. the way the CPU talks to the other stuff inside
353 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
354 VESA. If you have PCI, say Y, otherwise N.
362 source "drivers/pci/Kconfig"
364 config SUN_OPENPROMFS
365 tristate "Openprom tree appears in /proc/openprom"
367 If you say Y, the OpenPROM device tree will be available as a
368 virtual file system, which you can mount to /proc/openprom by "mount
369 -t openpromfs none /proc/openprom".
371 To compile the /proc/openprom support as a module, choose M here: the
372 module will be called openpromfs. If unsure, choose M.
374 config SPARC32_COMPAT
375 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
377 This allows you to run 32-bit binaries on your Ultra.
378 Everybody wants this; say Y.
382 depends on SPARC32_COMPAT
386 bool "Kernel support for 32-bit ELF binaries"
387 depends on SPARC32_COMPAT
389 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
390 Everybody wants this; say Y.
393 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
394 depends on SPARC32_COMPAT
396 This allows you to run 32-bit a.out format binaries on your Ultra.
397 If you want to run SunOS binaries (see SunOS binary emulation below)
398 or other a.out binaries, say Y. If unsure, say N.
400 menu "Executable file formats"
402 source "fs/Kconfig.binfmt"
405 bool "SunOS binary emulation"
406 depends on BINFMT_AOUT32
408 This allows you to run most SunOS binaries. If you want to do this,
409 say Y here and place appropriate files in /usr/gnemul/sunos. See
410 <http://www.ultralinux.org/faq.html> for more information. If you
411 want to run SunOS binaries on an Ultra you must also say Y to
412 "Kernel support for 32-bit a.out binaries" above.
415 tristate "Solaris binary emulation (EXPERIMENTAL)"
416 depends on SPARC32_COMPAT && NET && EXPERIMENTAL
418 This is experimental code which will enable you to run (many)
419 Solaris binaries on your SPARC Linux machine.
421 To compile this code as a module, choose M here: the
422 module will be called solaris.
427 bool "SMT (Hyperthreading) scheduler support"
431 SMT scheduler support improves the CPU scheduler's decision making
432 when dealing with UltraSPARC cpus at a cost of slightly increased
433 overhead in some places. If unsure say N here.
436 bool "Multi-core scheduler support"
440 Multi-core scheduler support improves the CPU scheduler's decision
441 making when dealing with multi-core CPU chips at a cost of slightly
442 increased overhead in some places. If unsure say N here.
444 source "kernel/Kconfig.preempt"
447 bool "Default bootloader kernel arguments"
450 string "Initial kernel command string"
451 depends on CMDLINE_BOOL
452 default "console=ttyS0,9600 root=/dev/sda1"
454 Say Y here if you want to be able to pass default arguments to
455 the kernel. This will be overridden by the bootloader, if you
456 use one (such as SILO). This is most useful if you want to boot
457 a kernel from TFTP, and want default options to be available
458 with having them passed on the command line.
460 NOTE: This option WILL override the PROM bootargs setting!
464 source "drivers/Kconfig"
466 source "drivers/sbus/char/Kconfig"
470 source "arch/sparc64/Kconfig.debug"
472 source "security/Kconfig"
474 source "crypto/Kconfig"