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_CLOCKEVENTS
41 config STACKTRACE_SUPPORT
45 config LOCKDEP_SUPPORT
49 config ARCH_MAY_HAVE_PC_FDC
53 config ARCH_HAS_ILOG2_U32
57 config ARCH_HAS_ILOG2_U64
66 prompt "Kernel page size"
67 default SPARC64_PAGE_SIZE_8KB
69 config SPARC64_PAGE_SIZE_8KB
72 This lets you select the page size of the kernel.
74 8KB and 64KB work quite well, since Sparc ELF sections
75 provide for up to 64KB alignment.
77 Therefore, 512KB and 4MB are for expert hackers only.
79 If you don't know what to do, choose 8KB.
81 config SPARC64_PAGE_SIZE_64KB
84 config SPARC64_PAGE_SIZE_512KB
87 config SPARC64_PAGE_SIZE_4MB
93 bool "Enable seccomp to safely compute untrusted bytecode"
97 This kernel feature is useful for number crunching applications
98 that may need to compute untrusted bytecode during their
99 execution. By using pipes or other transports made available to
100 the process as file descriptors supporting the read/write
101 syscalls, it's possible to isolate those applications in
102 their own address space using seccomp. Once seccomp is
103 enabled via /proc/<pid>/seccomp, it cannot be disabled
104 and the task is only allowed to execute a few safe syscalls
105 defined by each seccomp mode.
107 If unsure, say Y. Only embedded should say N here.
109 source kernel/Kconfig.hz
111 source "init/Kconfig"
113 config SYSVIPC_COMPAT
115 depends on COMPAT && SYSVIPC
118 config GENERIC_HARDIRQS
122 menu "General machine setup"
124 source "kernel/time/Kconfig"
127 bool "Symmetric multi-processing support"
129 This enables support for systems with more than one CPU. If you have
130 a system with only one CPU, say N. If you have a system with more than
133 If you say N here, the kernel will run on single and multiprocessor
134 machines, but will use only one CPU of a multiprocessor machine. If
135 you say Y here, the kernel will run on many, but not all,
136 singleprocessor machines. On a singleprocessor machine, the kernel
137 will run faster if you say N here.
139 People using multiprocessor machines who say Y here should also say
140 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
141 Management" code will be disabled if you say Y here.
143 See also the <file:Documentation/smp.txt>,
144 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
145 <http://www.tldp.org/docs.html#howto>.
147 If you don't know what to do here, say N.
150 int "Maximum number of CPUs (2-1024)"
155 source "drivers/cpufreq/Kconfig"
158 tristate "UltraSPARC-III CPU Frequency driver"
160 select CPU_FREQ_TABLE
162 This adds the CPUFreq driver for UltraSPARC-III processors.
164 For details, take a look at <file:Documentation/cpu-freq>.
169 tristate "UltraSPARC-IIe CPU Frequency driver"
171 select CPU_FREQ_TABLE
173 This adds the CPUFreq driver for UltraSPARC-IIe processors.
175 For details, take a look at <file:Documentation/cpu-freq>.
179 # Global things across all Sun machines.
180 config RWSEM_GENERIC_SPINLOCK
183 config RWSEM_XCHGADD_ALGORITHM
187 config GENERIC_FIND_NEXT_BIT
191 config GENERIC_HWEIGHT
193 default y if !ULTRA_HAS_POPULATION_COUNT
195 config GENERIC_CALIBRATE_DELAY
200 prompt "SPARC64 Huge TLB Page Size"
201 depends on HUGETLB_PAGE
202 default HUGETLB_PAGE_SIZE_4MB
204 config HUGETLB_PAGE_SIZE_4MB
207 config HUGETLB_PAGE_SIZE_512K
208 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
211 config HUGETLB_PAGE_SIZE_64K
212 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
219 config ARCH_SELECT_MEMORY_MODEL
222 config ARCH_SPARSEMEM_ENABLE
225 config ARCH_SPARSEMEM_DEFAULT
227 select SPARSEMEM_STATIC
234 Find out whether you have ISA slots on your motherboard. ISA is the
235 name of a bus system, i.e. the way the CPU talks to the other stuff
236 inside your box. Other bus systems are PCI, EISA, MicroChannel
237 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
238 newer boards don't support it. If you have ISA, say Y, otherwise N.
243 Say Y here if you would like support for ISA Plug and Play devices.
244 Some information is in <file:Documentation/isapnp.txt>.
246 To compile this driver as a module, choose M here: the
247 module will be called isapnp.
254 The Extended Industry Standard Architecture (EISA) bus was
255 developed as an open alternative to the IBM MicroChannel bus.
257 The EISA bus provided some of the features of the IBM MicroChannel
258 bus while maintaining backward compatibility with cards made for
259 the older ISA bus. The EISA bus saw limited use between 1988 and
260 1995 when it was made obsolete by the PCI bus.
262 Say Y here if you are building a kernel for an EISA-based machine.
269 MicroChannel Architecture is found in some IBM PS/2 machines and
270 laptops. It is a bus system similar to PCI or ISA. See
271 <file:Documentation/mca.txt> (and especially the web page given
272 there) before attempting to build an MCA bus kernel.
277 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
278 computer. These are credit-card size devices such as network cards,
279 modems or hard drives often used with laptops computers. There are
280 actually two varieties of these cards: the older 16 bit PCMCIA cards
281 and the newer 32 bit CardBus cards. If you want to use CardBus
282 cards, you need to say Y here and also to "CardBus support" below.
284 To use your PC-cards, you will need supporting software from David
285 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
286 for location). Please also read the PCMCIA-HOWTO, available from
287 <http://www.tldp.org/docs.html#howto>.
289 To compile this driver as modules, choose M here: the
290 modules will be called pcmcia_core and ds.
310 select ARCH_SUPPORTS_MSI
312 Find out whether you have a PCI motherboard. PCI is the name of a
313 bus system, i.e. the way the CPU talks to the other stuff inside
314 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
315 VESA. If you have PCI, say Y, otherwise N.
317 The PCI-HOWTO, available from
318 <http://www.tldp.org/docs.html#howto>, contains valuable
319 information about which PCI hardware does work under Linux and which
328 source "drivers/pci/Kconfig"
330 config SUN_OPENPROMFS
331 tristate "Openprom tree appears in /proc/openprom"
333 If you say Y, the OpenPROM device tree will be available as a
334 virtual file system, which you can mount to /proc/openprom by "mount
335 -t openpromfs none /proc/openprom".
337 To compile the /proc/openprom support as a module, choose M here: the
338 module will be called openpromfs. If unsure, choose M.
340 config SPARC32_COMPAT
341 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
343 This allows you to run 32-bit binaries on your Ultra.
344 Everybody wants this; say Y.
348 depends on SPARC32_COMPAT
352 bool "Kernel support for 32-bit ELF binaries"
353 depends on SPARC32_COMPAT
355 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
356 Everybody wants this; say Y.
359 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
360 depends on SPARC32_COMPAT
362 This allows you to run 32-bit a.out format binaries on your Ultra.
363 If you want to run SunOS binaries (see SunOS binary emulation below)
364 or other a.out binaries, say Y. If unsure, say N.
366 menu "Executable file formats"
368 source "fs/Kconfig.binfmt"
371 bool "SunOS binary emulation"
372 depends on BINFMT_AOUT32
374 This allows you to run most SunOS binaries. If you want to do this,
375 say Y here and place appropriate files in /usr/gnemul/sunos. See
376 <http://www.ultralinux.org/faq.html> for more information. If you
377 want to run SunOS binaries on an Ultra you must also say Y to
378 "Kernel support for 32-bit a.out binaries" above.
381 tristate "Solaris binary emulation (EXPERIMENTAL)"
382 depends on SPARC32_COMPAT && EXPERIMENTAL
384 This is experimental code which will enable you to run (many)
385 Solaris binaries on your SPARC Linux machine.
387 To compile this code as a module, choose M here: the
388 module will be called solaris.
393 bool "SMT (Hyperthreading) scheduler support"
397 SMT scheduler support improves the CPU scheduler's decision making
398 when dealing with UltraSPARC cpus at a cost of slightly increased
399 overhead in some places. If unsure say N here.
402 bool "Multi-core scheduler support"
406 Multi-core scheduler support improves the CPU scheduler's decision
407 making when dealing with multi-core CPU chips at a cost of slightly
408 increased overhead in some places. If unsure say N here.
410 source "kernel/Kconfig.preempt"
413 bool "Default bootloader kernel arguments"
416 string "Initial kernel command string"
417 depends on CMDLINE_BOOL
418 default "console=ttyS0,9600 root=/dev/sda1"
420 Say Y here if you want to be able to pass default arguments to
421 the kernel. This will be overridden by the bootloader, if you
422 use one (such as SILO). This is most useful if you want to boot
423 a kernel from TFTP, and want default options to be available
424 with having them passed on the command line.
426 NOTE: This option WILL override the PROM bootargs setting!
430 source "drivers/Kconfig"
432 source "drivers/sbus/char/Kconfig"
434 source "drivers/fc4/Kconfig"
438 menu "Instrumentation Support"
439 depends on EXPERIMENTAL
441 source "arch/sparc64/oprofile/Kconfig"
444 bool "Kprobes (EXPERIMENTAL)"
445 depends on KALLSYMS && EXPERIMENTAL && MODULES
447 Kprobes allows you to trap at almost any kernel address and
448 execute a callback function. register_kprobe() establishes
449 a probepoint and specifies the callback. Kprobes is useful
450 for kernel debugging, non-intrusive instrumentation and testing.
451 If in doubt, say "N".
454 source "arch/sparc64/Kconfig.debug"
456 source "security/Kconfig"
458 source "crypto/Kconfig"