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"
12 SPARC is a family of RISC microprocessors designed and marketed by
13 Sun Microsystems, incorporated. This port covers the newer 64-bit
14 UltraSPARC. The UltraLinux project maintains both the SPARC32 and
15 SPARC64 ports; its web page is available at
16 <http://www.ultralinux.org/>.
25 config TIME_INTERPOLATION
30 prompt "Kernel page size"
31 default SPARC64_PAGE_SIZE_8KB
33 config SPARC64_PAGE_SIZE_8KB
36 This lets you select the page size of the kernel.
38 8KB and 64KB work quite well, since Sparc ELF sections
39 provide for up to 64KB alignment.
41 Therefore, 512KB and 4MB are for expert hackers only.
43 If you don't know what to do, choose 8KB.
45 config SPARC64_PAGE_SIZE_64KB
48 config SPARC64_PAGE_SIZE_512KB
51 config SPARC64_PAGE_SIZE_4MB
57 bool "Enable seccomp to safely compute untrusted bytecode"
61 This kernel feature is useful for number crunching applications
62 that may need to compute untrusted bytecode during their
63 execution. By using pipes or other transports made available to
64 the process as file descriptors supporting the read/write
65 syscalls, it's possible to isolate those applications in
66 their own address space using seccomp. Once seccomp is
67 enabled via /proc/<pid>/seccomp, it cannot be disabled
68 and the task is only allowed to execute a few safe syscalls
69 defined by each seccomp mode.
71 If unsure, say Y. Only embedded should say N here.
73 source kernel/Kconfig.hz
79 depends on COMPAT && SYSVIPC
82 menu "General machine setup"
85 bool "Symmetric multi-processing support"
87 This enables support for systems with more than one CPU. If you have
88 a system with only one CPU, say N. If you have a system with more than
91 If you say N here, the kernel will run on single and multiprocessor
92 machines, but will use only one CPU of a multiprocessor machine. If
93 you say Y here, the kernel will run on many, but not all,
94 singleprocessor machines. On a singleprocessor machine, the kernel
95 will run faster if you say N here.
97 People using multiprocessor machines who say Y here should also say
98 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
99 Management" code will be disabled if you say Y here.
101 See also the <file:Documentation/smp.txt>,
102 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
103 <http://www.tldp.org/docs.html#howto>.
105 If you don't know what to do here, say N.
108 bool "Preemptible Kernel"
110 This option reduces the latency of the kernel when reacting to
111 real-time or interactive events by allowing a low priority process to
112 be preempted even if it is in kernel mode executing a system call.
113 This allows applications to run more reliably even when the system is
116 Say Y here if you are building a kernel for a desktop, embedded
117 or real-time system. Say N if you are unsure.
120 int "Maximum number of CPUs (2-64)"
125 source "drivers/cpufreq/Kconfig"
128 tristate "UltraSPARC-III CPU Frequency driver"
130 select CPU_FREQ_TABLE
132 This adds the CPUFreq driver for UltraSPARC-III processors.
134 For details, take a look at <file:Documentation/cpu-freq>.
139 tristate "UltraSPARC-IIe CPU Frequency driver"
141 select CPU_FREQ_TABLE
143 This adds the CPUFreq driver for UltraSPARC-IIe processors.
145 For details, take a look at <file:Documentation/cpu-freq>.
149 # Global things across all Sun machines.
150 config RWSEM_GENERIC_SPINLOCK
153 config RWSEM_XCHGADD_ALGORITHM
157 config GENERIC_CALIBRATE_DELAY
162 prompt "SPARC64 Huge TLB Page Size"
163 depends on HUGETLB_PAGE
164 default HUGETLB_PAGE_SIZE_4MB
166 config HUGETLB_PAGE_SIZE_4MB
169 config HUGETLB_PAGE_SIZE_512K
170 depends on !SPARC64_PAGE_SIZE_4MB
173 config HUGETLB_PAGE_SIZE_64K
174 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512K
181 source "drivers/firmware/Kconfig"
185 config GENERIC_ISA_DMA
192 Find out whether you have ISA slots on your motherboard. ISA is the
193 name of a bus system, i.e. the way the CPU talks to the other stuff
194 inside your box. Other bus systems are PCI, EISA, MicroChannel
195 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
196 newer boards don't support it. If you have ISA, say Y, otherwise N.
201 Say Y here if you would like support for ISA Plug and Play devices.
202 Some information is in <file:Documentation/isapnp.txt>.
204 To compile this driver as a module, choose M here: the
205 module will be called isapnp.
212 The Extended Industry Standard Architecture (EISA) bus was
213 developed as an open alternative to the IBM MicroChannel bus.
215 The EISA bus provided some of the features of the IBM MicroChannel
216 bus while maintaining backward compatibility with cards made for
217 the older ISA bus. The EISA bus saw limited use between 1988 and
218 1995 when it was made obsolete by the PCI bus.
220 Say Y here if you are building a kernel for an EISA-based machine.
227 MicroChannel Architecture is found in some IBM PS/2 machines and
228 laptops. It is a bus system similar to PCI or ISA. See
229 <file:Documentation/mca.txt> (and especially the web page given
230 there) before attempting to build an MCA bus kernel.
235 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
236 computer. These are credit-card size devices such as network cards,
237 modems or hard drives often used with laptops computers. There are
238 actually two varieties of these cards: the older 16 bit PCMCIA cards
239 and the newer 32 bit CardBus cards. If you want to use CardBus
240 cards, you need to say Y here and also to "CardBus support" below.
242 To use your PC-cards, you will need supporting software from David
243 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
244 for location). Please also read the PCMCIA-HOWTO, available from
245 <http://www.tldp.org/docs.html#howto>.
247 To compile this driver as modules, choose M here: the
248 modules will be called pcmcia_core and ds.
269 Find out whether you have a PCI motherboard. PCI is the name of a
270 bus system, i.e. the way the CPU talks to the other stuff inside
271 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
272 VESA. If you have PCI, say Y, otherwise N.
274 The PCI-HOWTO, available from
275 <http://www.tldp.org/docs.html#howto>, contains valuable
276 information about which PCI hardware does work under Linux and which
283 source "drivers/pci/Kconfig"
285 config SUN_OPENPROMFS
286 tristate "Openprom tree appears in /proc/openprom"
288 If you say Y, the OpenPROM device tree will be available as a
289 virtual file system, which you can mount to /proc/openprom by "mount
290 -t openpromfs none /proc/openprom".
292 To compile the /proc/openprom support as a module, choose M here: the
293 module will be called openpromfs. If unsure, choose M.
295 config SPARC32_COMPAT
296 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
298 This allows you to run 32-bit binaries on your Ultra.
299 Everybody wants this; say Y.
303 depends on SPARC32_COMPAT
308 depends on SPARC32_COMPAT
312 tristate "Kernel support for 32-bit ELF binaries"
313 depends on SPARC32_COMPAT
315 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
316 Everybody wants this; say Y.
319 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
320 depends on SPARC32_COMPAT
322 This allows you to run 32-bit a.out format binaries on your Ultra.
323 If you want to run SunOS binaries (see SunOS binary emulation below)
324 or other a.out binaries, say Y. If unsure, say N.
326 menu "Executable file formats"
328 source "fs/Kconfig.binfmt"
331 bool "SunOS binary emulation"
332 depends on BINFMT_AOUT32
334 This allows you to run most SunOS binaries. If you want to do this,
335 say Y here and place appropriate files in /usr/gnemul/sunos. See
336 <http://www.ultralinux.org/faq.html> for more information. If you
337 want to run SunOS binaries on an Ultra you must also say Y to
338 "Kernel support for 32-bit a.out binaries" above.
341 tristate "Solaris binary emulation (EXPERIMENTAL)"
342 depends on SPARC32_COMPAT && EXPERIMENTAL
344 This is experimental code which will enable you to run (many)
345 Solaris binaries on your SPARC Linux machine.
347 To compile this code as a module, choose M here: the
348 module will be called solaris.
353 bool "Default bootloader kernel arguments"
356 string "Initial kernel command string"
357 depends on CMDLINE_BOOL
358 default "console=ttyS0,9600 root=/dev/sda1"
360 Say Y here if you want to be able to pass default arguments to
361 the kernel. This will be overridden by the bootloader, if you
362 use one (such as SILO). This is most useful if you want to boot
363 a kernel from TFTP, and want default options to be available
364 with having them passed on the command line.
366 NOTE: This option WILL override the PROM bootargs setting!
370 source "drivers/Kconfig"
372 source "drivers/sbus/char/Kconfig"
374 source "drivers/fc4/Kconfig"
378 source "arch/sparc64/oprofile/Kconfig"
380 source "arch/sparc64/Kconfig.debug"
382 source "security/Kconfig"
384 source "crypto/Kconfig"