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
37 config STACKTRACE_SUPPORT
41 config LOCKDEP_SUPPORT
45 config ARCH_MAY_HAVE_PC_FDC
49 config ARCH_HAS_ILOG2_U32
53 config ARCH_HAS_ILOG2_U64
62 prompt "Kernel page size"
63 default SPARC64_PAGE_SIZE_8KB
65 config SPARC64_PAGE_SIZE_8KB
68 This lets you select the page size of the kernel.
70 8KB and 64KB work quite well, since Sparc ELF sections
71 provide for up to 64KB alignment.
73 Therefore, 512KB and 4MB are for expert hackers only.
75 If you don't know what to do, choose 8KB.
77 config SPARC64_PAGE_SIZE_64KB
80 config SPARC64_PAGE_SIZE_512KB
83 config SPARC64_PAGE_SIZE_4MB
89 bool "Enable seccomp to safely compute untrusted bytecode"
93 This kernel feature is useful for number crunching applications
94 that may need to compute untrusted bytecode during their
95 execution. By using pipes or other transports made available to
96 the process as file descriptors supporting the read/write
97 syscalls, it's possible to isolate those applications in
98 their own address space using seccomp. Once seccomp is
99 enabled via /proc/<pid>/seccomp, it cannot be disabled
100 and the task is only allowed to execute a few safe syscalls
101 defined by each seccomp mode.
103 If unsure, say Y. Only embedded should say N here.
105 source kernel/Kconfig.hz
107 source "init/Kconfig"
109 config SYSVIPC_COMPAT
111 depends on COMPAT && SYSVIPC
114 config GENERIC_HARDIRQS
118 menu "General machine setup"
120 source "kernel/time/Kconfig"
123 bool "Symmetric multi-processing support"
125 This enables support for systems with more than one CPU. If you have
126 a system with only one CPU, say N. If you have a system with more than
129 If you say N here, the kernel will run on single and multiprocessor
130 machines, but will use only one CPU of a multiprocessor machine. If
131 you say Y here, the kernel will run on many, but not all,
132 singleprocessor machines. On a singleprocessor machine, the kernel
133 will run faster if you say N here.
135 People using multiprocessor machines who say Y here should also say
136 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
137 Management" code will be disabled if you say Y here.
139 See also the <file:Documentation/smp.txt>,
140 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
141 <http://www.tldp.org/docs.html#howto>.
143 If you don't know what to do here, say N.
146 int "Maximum number of CPUs (2-64)"
151 source "drivers/cpufreq/Kconfig"
154 tristate "UltraSPARC-III CPU Frequency driver"
156 select CPU_FREQ_TABLE
158 This adds the CPUFreq driver for UltraSPARC-III processors.
160 For details, take a look at <file:Documentation/cpu-freq>.
165 tristate "UltraSPARC-IIe CPU Frequency driver"
167 select CPU_FREQ_TABLE
169 This adds the CPUFreq driver for UltraSPARC-IIe processors.
171 For details, take a look at <file:Documentation/cpu-freq>.
175 # Global things across all Sun machines.
176 config RWSEM_GENERIC_SPINLOCK
179 config RWSEM_XCHGADD_ALGORITHM
183 config GENERIC_FIND_NEXT_BIT
187 config GENERIC_HWEIGHT
189 default y if !ULTRA_HAS_POPULATION_COUNT
191 config GENERIC_CALIBRATE_DELAY
196 prompt "SPARC64 Huge TLB Page Size"
197 depends on HUGETLB_PAGE
198 default HUGETLB_PAGE_SIZE_4MB
200 config HUGETLB_PAGE_SIZE_4MB
203 config HUGETLB_PAGE_SIZE_512K
204 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
207 config HUGETLB_PAGE_SIZE_64K
208 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
215 config ARCH_SELECT_MEMORY_MODEL
218 config ARCH_SPARSEMEM_ENABLE
221 config ARCH_SPARSEMEM_DEFAULT
232 Find out whether you have ISA slots on your motherboard. ISA is the
233 name of a bus system, i.e. the way the CPU talks to the other stuff
234 inside your box. Other bus systems are PCI, EISA, MicroChannel
235 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
236 newer boards don't support it. If you have ISA, say Y, otherwise N.
241 Say Y here if you would like support for ISA Plug and Play devices.
242 Some information is in <file:Documentation/isapnp.txt>.
244 To compile this driver as a module, choose M here: the
245 module will be called isapnp.
252 The Extended Industry Standard Architecture (EISA) bus was
253 developed as an open alternative to the IBM MicroChannel bus.
255 The EISA bus provided some of the features of the IBM MicroChannel
256 bus while maintaining backward compatibility with cards made for
257 the older ISA bus. The EISA bus saw limited use between 1988 and
258 1995 when it was made obsolete by the PCI bus.
260 Say Y here if you are building a kernel for an EISA-based machine.
267 MicroChannel Architecture is found in some IBM PS/2 machines and
268 laptops. It is a bus system similar to PCI or ISA. See
269 <file:Documentation/mca.txt> (and especially the web page given
270 there) before attempting to build an MCA bus kernel.
275 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
276 computer. These are credit-card size devices such as network cards,
277 modems or hard drives often used with laptops computers. There are
278 actually two varieties of these cards: the older 16 bit PCMCIA cards
279 and the newer 32 bit CardBus cards. If you want to use CardBus
280 cards, you need to say Y here and also to "CardBus support" below.
282 To use your PC-cards, you will need supporting software from David
283 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
284 for location). Please also read the PCMCIA-HOWTO, available from
285 <http://www.tldp.org/docs.html#howto>.
287 To compile this driver as modules, choose M here: the
288 modules will be called pcmcia_core and ds.
309 Find out whether you have a PCI motherboard. PCI is the name of a
310 bus system, i.e. the way the CPU talks to the other stuff inside
311 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
312 VESA. If you have PCI, say Y, otherwise N.
314 The PCI-HOWTO, available from
315 <http://www.tldp.org/docs.html#howto>, contains valuable
316 information about which PCI hardware does work under Linux and which
323 source "drivers/pci/Kconfig"
325 config SUN_OPENPROMFS
326 tristate "Openprom tree appears in /proc/openprom"
328 If you say Y, the OpenPROM device tree will be available as a
329 virtual file system, which you can mount to /proc/openprom by "mount
330 -t openpromfs none /proc/openprom".
332 To compile the /proc/openprom support as a module, choose M here: the
333 module will be called openpromfs. If unsure, choose M.
335 config SPARC32_COMPAT
336 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
338 This allows you to run 32-bit binaries on your Ultra.
339 Everybody wants this; say Y.
343 depends on SPARC32_COMPAT
347 bool "Kernel support for 32-bit ELF binaries"
348 depends on SPARC32_COMPAT
350 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
351 Everybody wants this; say Y.
354 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
355 depends on SPARC32_COMPAT
357 This allows you to run 32-bit a.out format binaries on your Ultra.
358 If you want to run SunOS binaries (see SunOS binary emulation below)
359 or other a.out binaries, say Y. If unsure, say N.
361 menu "Executable file formats"
363 source "fs/Kconfig.binfmt"
366 bool "SunOS binary emulation"
367 depends on BINFMT_AOUT32
369 This allows you to run most SunOS binaries. If you want to do this,
370 say Y here and place appropriate files in /usr/gnemul/sunos. See
371 <http://www.ultralinux.org/faq.html> for more information. If you
372 want to run SunOS binaries on an Ultra you must also say Y to
373 "Kernel support for 32-bit a.out binaries" above.
376 tristate "Solaris binary emulation (EXPERIMENTAL)"
377 depends on SPARC32_COMPAT && EXPERIMENTAL
379 This is experimental code which will enable you to run (many)
380 Solaris binaries on your SPARC Linux machine.
382 To compile this code as a module, choose M here: the
383 module will be called solaris.
388 bool "SMT (Hyperthreading) scheduler support"
392 SMT scheduler support improves the CPU scheduler's decision making
393 when dealing with UltraSPARC cpus at a cost of slightly increased
394 overhead in some places. If unsure say N here.
396 source "kernel/Kconfig.preempt"
399 bool "Default bootloader kernel arguments"
402 string "Initial kernel command string"
403 depends on CMDLINE_BOOL
404 default "console=ttyS0,9600 root=/dev/sda1"
406 Say Y here if you want to be able to pass default arguments to
407 the kernel. This will be overridden by the bootloader, if you
408 use one (such as SILO). This is most useful if you want to boot
409 a kernel from TFTP, and want default options to be available
410 with having them passed on the command line.
412 NOTE: This option WILL override the PROM bootargs setting!
416 source "drivers/Kconfig"
418 source "drivers/sbus/char/Kconfig"
420 source "drivers/fc4/Kconfig"
424 menu "Instrumentation Support"
425 depends on EXPERIMENTAL
427 source "arch/sparc64/oprofile/Kconfig"
430 bool "Kprobes (EXPERIMENTAL)"
431 depends on KALLSYMS && EXPERIMENTAL && MODULES
433 Kprobes allows you to trap at almost any kernel address and
434 execute a callback function. register_kprobe() establishes
435 a probepoint and specifies the callback. Kprobes is useful
436 for kernel debugging, non-intrusive instrumentation and testing.
437 If in doubt, say "N".
440 source "arch/sparc64/Kconfig.debug"
442 source "security/Kconfig"
444 source "crypto/Kconfig"