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"
13 select HAVE_KRETPROBES
21 SPARC is a family of RISC microprocessors designed and marketed by
22 Sun Microsystems, incorporated. This port covers the newer 64-bit
23 UltraSPARC. The UltraLinux project maintains both the SPARC32 and
24 SPARC64 ports; its web page is available at
25 <http://www.ultralinux.org/>.
31 config GENERIC_CMOS_UPDATE
35 config GENERIC_CLOCKEVENTS
54 config STACKTRACE_SUPPORT
58 config LOCKDEP_SUPPORT
62 config ARCH_MAY_HAVE_PC_FDC
66 config ARCH_HAS_ILOG2_U32
70 config ARCH_HAS_ILOG2_U64
78 config HAVE_SETUP_PER_CPU_AREA
81 config ARCH_NO_VIRT_TO_BUS
87 config GENERIC_HARDIRQS_NO__DO_IRQ
91 config ARCH_SUPPORTS_AOUT
95 prompt "Kernel page size"
96 default SPARC64_PAGE_SIZE_8KB
98 config SPARC64_PAGE_SIZE_8KB
101 This lets you select the page size of the kernel.
103 8KB and 64KB work quite well, since Sparc ELF sections
104 provide for up to 64KB alignment.
106 Therefore, 512KB and 4MB are for expert hackers only.
108 If you don't know what to do, choose 8KB.
110 config SPARC64_PAGE_SIZE_64KB
113 config SPARC64_PAGE_SIZE_512KB
116 config SPARC64_PAGE_SIZE_4MB
122 bool "Enable seccomp to safely compute untrusted bytecode"
126 This kernel feature is useful for number crunching applications
127 that may need to compute untrusted bytecode during their
128 execution. By using pipes or other transports made available to
129 the process as file descriptors supporting the read/write
130 syscalls, it's possible to isolate those applications in
131 their own address space using seccomp. Once seccomp is
132 enabled via /proc/<pid>/seccomp, it cannot be disabled
133 and the task is only allowed to execute a few safe syscalls
134 defined by each seccomp mode.
136 If unsure, say Y. Only embedded should say N here.
138 source kernel/Kconfig.hz
141 bool "Support for hot-pluggable CPUs"
145 Say Y here to experiment with turning CPUs off and on. CPUs
146 can be controlled through /sys/devices/system/cpu/cpu#.
147 Say N if you want to disable CPU hotplug.
149 source "init/Kconfig"
151 config SYSVIPC_COMPAT
153 depends on COMPAT && SYSVIPC
156 config GENERIC_HARDIRQS
160 menu "General machine setup"
162 source "kernel/time/Kconfig"
165 bool "Symmetric multi-processing support"
167 This enables support for systems with more than one CPU. If you have
168 a system with only one CPU, say N. If you have a system with more than
171 If you say N here, the kernel will run on single and multiprocessor
172 machines, but will use only one CPU of a multiprocessor machine. If
173 you say Y here, the kernel will run on many, but not all,
174 singleprocessor machines. On a singleprocessor machine, the kernel
175 will run faster if you say N here.
177 People using multiprocessor machines who say Y here should also say
178 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
179 Management" code will be disabled if you say Y here.
181 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
182 available at <http://www.tldp.org/docs.html#howto>.
184 If you don't know what to do here, say N.
187 int "Maximum number of CPUs (2-1024)"
192 source "drivers/cpufreq/Kconfig"
195 tristate "UltraSPARC-III CPU Frequency driver"
197 select CPU_FREQ_TABLE
199 This adds the CPUFreq driver for UltraSPARC-III processors.
201 For details, take a look at <file:Documentation/cpu-freq>.
206 tristate "UltraSPARC-IIe CPU Frequency driver"
208 select CPU_FREQ_TABLE
210 This adds the CPUFreq driver for UltraSPARC-IIe processors.
212 For details, take a look at <file:Documentation/cpu-freq>.
216 # Global things across all Sun machines.
217 config GENERIC_LOCKBREAK
220 depends on SMP && PREEMPT
222 config RWSEM_GENERIC_SPINLOCK
225 config RWSEM_XCHGADD_ALGORITHM
229 config GENERIC_FIND_NEXT_BIT
233 config GENERIC_HWEIGHT
235 default y if !ULTRA_HAS_POPULATION_COUNT
237 config GENERIC_CALIBRATE_DELAY
242 prompt "SPARC64 Huge TLB Page Size"
243 depends on HUGETLB_PAGE
244 default HUGETLB_PAGE_SIZE_4MB
246 config HUGETLB_PAGE_SIZE_4MB
249 config HUGETLB_PAGE_SIZE_512K
250 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
253 config HUGETLB_PAGE_SIZE_64K
254 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
261 config ARCH_SELECT_MEMORY_MODEL
264 config ARCH_SPARSEMEM_ENABLE
266 select SPARSEMEM_VMEMMAP_ENABLE
268 config ARCH_SPARSEMEM_DEFAULT
276 Find out whether you have ISA slots on your motherboard. ISA is the
277 name of a bus system, i.e. the way the CPU talks to the other stuff
278 inside your box. Other bus systems are PCI, EISA, MicroChannel
279 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
280 newer boards don't support it. If you have ISA, say Y, otherwise N.
285 Say Y here if you would like support for ISA Plug and Play devices.
286 Some information is in <file:Documentation/isapnp.txt>.
288 To compile this driver as a module, choose M here: the
289 module will be called isapnp.
296 The Extended Industry Standard Architecture (EISA) bus was
297 developed as an open alternative to the IBM MicroChannel bus.
299 The EISA bus provided some of the features of the IBM MicroChannel
300 bus while maintaining backward compatibility with cards made for
301 the older ISA bus. The EISA bus saw limited use between 1988 and
302 1995 when it was made obsolete by the PCI bus.
304 Say Y here if you are building a kernel for an EISA-based machine.
311 MicroChannel Architecture is found in some IBM PS/2 machines and
312 laptops. It is a bus system similar to PCI or ISA. See
313 <file:Documentation/mca.txt> (and especially the web page given
314 there) before attempting to build an MCA bus kernel.
319 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
320 computer. These are credit-card size devices such as network cards,
321 modems or hard drives often used with laptops computers. There are
322 actually two varieties of these cards: the older 16 bit PCMCIA cards
323 and the newer 32 bit CardBus cards. If you want to use CardBus
324 cards, you need to say Y here and also to "CardBus support" below.
326 To use your PC-cards, you will need supporting software from David
327 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
328 for location). Please also read the PCMCIA-HOWTO, available from
329 <http://www.tldp.org/docs.html#howto>.
331 To compile this driver as modules, choose M here: the
332 modules will be called pcmcia_core and ds.
351 bool "Sun Logical Domains support"
353 Say Y here is you want to support virtual devices via
358 select ARCH_SUPPORTS_MSI
360 Find out whether you have a PCI motherboard. PCI is the name of a
361 bus system, i.e. the way the CPU talks to the other stuff inside
362 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
363 VESA. If you have PCI, say Y, otherwise N.
371 source "drivers/pci/Kconfig"
373 config SUN_OPENPROMFS
374 tristate "Openprom tree appears in /proc/openprom"
376 If you say Y, the OpenPROM device tree will be available as a
377 virtual file system, which you can mount to /proc/openprom by "mount
378 -t openpromfs none /proc/openprom".
380 To compile the /proc/openprom support as a module, choose M here: the
381 module will be called openpromfs. If unsure, choose M.
383 config SPARC32_COMPAT
384 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
386 This allows you to run 32-bit binaries on your Ultra.
387 Everybody wants this; say Y.
391 depends on SPARC32_COMPAT
393 select COMPAT_BINFMT_ELF
396 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
397 depends on SPARC32_COMPAT && ARCH_SUPPORTS_AOUT
399 This allows you to run 32-bit a.out format binaries on your Ultra.
400 If you want to run SunOS binaries (see SunOS binary emulation below)
401 or other a.out binaries, say Y. If unsure, say N.
403 menu "Executable file formats"
405 source "fs/Kconfig.binfmt"
408 bool "SunOS binary emulation"
409 depends on BINFMT_AOUT32
411 This allows you to run most SunOS binaries. If you want to do this,
412 say Y here and place appropriate files in /usr/gnemul/sunos. See
413 <http://www.ultralinux.org/faq.html> for more information. If you
414 want to run SunOS binaries on an Ultra you must also say Y to
415 "Kernel support for 32-bit a.out binaries" above.
418 tristate "Solaris binary emulation (EXPERIMENTAL)"
419 depends on SPARC32_COMPAT && NET && EXPERIMENTAL
421 This is experimental code which will enable you to run (many)
422 Solaris binaries on your SPARC Linux machine.
424 To compile this code as a module, choose M here: the
425 module will be called solaris.
430 bool "SMT (Hyperthreading) scheduler support"
434 SMT scheduler support improves the CPU scheduler's decision making
435 when dealing with UltraSPARC cpus at a cost of slightly increased
436 overhead in some places. If unsure say N here.
439 bool "Multi-core scheduler support"
443 Multi-core scheduler support improves the CPU scheduler's decision
444 making when dealing with multi-core CPU chips at a cost of slightly
445 increased overhead in some places. If unsure say N here.
447 source "kernel/Kconfig.preempt"
450 bool "Default bootloader kernel arguments"
453 string "Initial kernel command string"
454 depends on CMDLINE_BOOL
455 default "console=ttyS0,9600 root=/dev/sda1"
457 Say Y here if you want to be able to pass default arguments to
458 the kernel. This will be overridden by the bootloader, if you
459 use one (such as SILO). This is most useful if you want to boot
460 a kernel from TFTP, and want default options to be available
461 with having them passed on the command line.
463 NOTE: This option WILL override the PROM bootargs setting!
467 source "drivers/Kconfig"
469 source "drivers/sbus/char/Kconfig"
473 source "arch/sparc64/Kconfig.debug"
475 source "security/Kconfig"
477 source "crypto/Kconfig"