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
65 config ARCH_NO_VIRT_TO_BUS
72 prompt "Kernel page size"
73 default SPARC64_PAGE_SIZE_8KB
75 config SPARC64_PAGE_SIZE_8KB
78 This lets you select the page size of the kernel.
80 8KB and 64KB work quite well, since Sparc ELF sections
81 provide for up to 64KB alignment.
83 Therefore, 512KB and 4MB are for expert hackers only.
85 If you don't know what to do, choose 8KB.
87 config SPARC64_PAGE_SIZE_64KB
90 config SPARC64_PAGE_SIZE_512KB
93 config SPARC64_PAGE_SIZE_4MB
99 bool "Enable seccomp to safely compute untrusted bytecode"
103 This kernel feature is useful for number crunching applications
104 that may need to compute untrusted bytecode during their
105 execution. By using pipes or other transports made available to
106 the process as file descriptors supporting the read/write
107 syscalls, it's possible to isolate those applications in
108 their own address space using seccomp. Once seccomp is
109 enabled via /proc/<pid>/seccomp, it cannot be disabled
110 and the task is only allowed to execute a few safe syscalls
111 defined by each seccomp mode.
113 If unsure, say Y. Only embedded should say N here.
115 source kernel/Kconfig.hz
118 bool "Support for hot-pluggable CPUs"
122 Say Y here to experiment with turning CPUs off and on. CPUs
123 can be controlled through /sys/devices/system/cpu/cpu#.
124 Say N if you want to disable CPU hotplug.
126 source "init/Kconfig"
128 config SYSVIPC_COMPAT
130 depends on COMPAT && SYSVIPC
133 config GENERIC_HARDIRQS
137 menu "General machine setup"
139 source "kernel/time/Kconfig"
142 bool "Symmetric multi-processing support"
144 This enables support for systems with more than one CPU. If you have
145 a system with only one CPU, say N. If you have a system with more than
148 If you say N here, the kernel will run on single and multiprocessor
149 machines, but will use only one CPU of a multiprocessor machine. If
150 you say Y here, the kernel will run on many, but not all,
151 singleprocessor machines. On a singleprocessor machine, the kernel
152 will run faster if you say N here.
154 People using multiprocessor machines who say Y here should also say
155 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
156 Management" code will be disabled if you say Y here.
158 See also the <file:Documentation/smp.txt>,
159 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
160 <http://www.tldp.org/docs.html#howto>.
162 If you don't know what to do here, say N.
165 int "Maximum number of CPUs (2-1024)"
170 source "drivers/cpufreq/Kconfig"
173 tristate "UltraSPARC-III CPU Frequency driver"
175 select CPU_FREQ_TABLE
177 This adds the CPUFreq driver for UltraSPARC-III processors.
179 For details, take a look at <file:Documentation/cpu-freq>.
184 tristate "UltraSPARC-IIe CPU Frequency driver"
186 select CPU_FREQ_TABLE
188 This adds the CPUFreq driver for UltraSPARC-IIe processors.
190 For details, take a look at <file:Documentation/cpu-freq>.
194 # Global things across all Sun machines.
195 config RWSEM_GENERIC_SPINLOCK
198 config RWSEM_XCHGADD_ALGORITHM
202 config GENERIC_FIND_NEXT_BIT
206 config GENERIC_HWEIGHT
208 default y if !ULTRA_HAS_POPULATION_COUNT
210 config GENERIC_CALIBRATE_DELAY
215 prompt "SPARC64 Huge TLB Page Size"
216 depends on HUGETLB_PAGE
217 default HUGETLB_PAGE_SIZE_4MB
219 config HUGETLB_PAGE_SIZE_4MB
222 config HUGETLB_PAGE_SIZE_512K
223 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
226 config HUGETLB_PAGE_SIZE_64K
227 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
234 config ARCH_SELECT_MEMORY_MODEL
237 config ARCH_SPARSEMEM_ENABLE
240 config ARCH_SPARSEMEM_DEFAULT
242 select SPARSEMEM_STATIC
249 Find out whether you have ISA slots on your motherboard. ISA is the
250 name of a bus system, i.e. the way the CPU talks to the other stuff
251 inside your box. Other bus systems are PCI, EISA, MicroChannel
252 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
253 newer boards don't support it. If you have ISA, say Y, otherwise N.
258 Say Y here if you would like support for ISA Plug and Play devices.
259 Some information is in <file:Documentation/isapnp.txt>.
261 To compile this driver as a module, choose M here: the
262 module will be called isapnp.
269 The Extended Industry Standard Architecture (EISA) bus was
270 developed as an open alternative to the IBM MicroChannel bus.
272 The EISA bus provided some of the features of the IBM MicroChannel
273 bus while maintaining backward compatibility with cards made for
274 the older ISA bus. The EISA bus saw limited use between 1988 and
275 1995 when it was made obsolete by the PCI bus.
277 Say Y here if you are building a kernel for an EISA-based machine.
284 MicroChannel Architecture is found in some IBM PS/2 machines and
285 laptops. It is a bus system similar to PCI or ISA. See
286 <file:Documentation/mca.txt> (and especially the web page given
287 there) before attempting to build an MCA bus kernel.
292 Say Y here if you want to attach PCMCIA- or PC-cards to your Linux
293 computer. These are credit-card size devices such as network cards,
294 modems or hard drives often used with laptops computers. There are
295 actually two varieties of these cards: the older 16 bit PCMCIA cards
296 and the newer 32 bit CardBus cards. If you want to use CardBus
297 cards, you need to say Y here and also to "CardBus support" below.
299 To use your PC-cards, you will need supporting software from David
300 Hinds' pcmcia-cs package (see the file <file:Documentation/Changes>
301 for location). Please also read the PCMCIA-HOWTO, available from
302 <http://www.tldp.org/docs.html#howto>.
304 To compile this driver as modules, choose M here: the
305 modules will be called pcmcia_core and ds.
324 bool "Sun Logical Domains support"
326 Say Y here is you want to support virtual devices via
331 select ARCH_SUPPORTS_MSI
333 Find out whether you have a PCI motherboard. PCI is the name of a
334 bus system, i.e. the way the CPU talks to the other stuff inside
335 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
336 VESA. If you have PCI, say Y, otherwise N.
338 The PCI-HOWTO, available from
339 <http://www.tldp.org/docs.html#howto>, contains valuable
340 information about which PCI hardware does work under Linux and which
349 source "drivers/pci/Kconfig"
351 config SUN_OPENPROMFS
352 tristate "Openprom tree appears in /proc/openprom"
354 If you say Y, the OpenPROM device tree will be available as a
355 virtual file system, which you can mount to /proc/openprom by "mount
356 -t openpromfs none /proc/openprom".
358 To compile the /proc/openprom support as a module, choose M here: the
359 module will be called openpromfs. If unsure, choose M.
361 config SPARC32_COMPAT
362 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
364 This allows you to run 32-bit binaries on your Ultra.
365 Everybody wants this; say Y.
369 depends on SPARC32_COMPAT
373 bool "Kernel support for 32-bit ELF binaries"
374 depends on SPARC32_COMPAT
376 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
377 Everybody wants this; say Y.
380 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
381 depends on SPARC32_COMPAT
383 This allows you to run 32-bit a.out format binaries on your Ultra.
384 If you want to run SunOS binaries (see SunOS binary emulation below)
385 or other a.out binaries, say Y. If unsure, say N.
387 menu "Executable file formats"
389 source "fs/Kconfig.binfmt"
392 bool "SunOS binary emulation"
393 depends on BINFMT_AOUT32
395 This allows you to run most SunOS binaries. If you want to do this,
396 say Y here and place appropriate files in /usr/gnemul/sunos. See
397 <http://www.ultralinux.org/faq.html> for more information. If you
398 want to run SunOS binaries on an Ultra you must also say Y to
399 "Kernel support for 32-bit a.out binaries" above.
402 tristate "Solaris binary emulation (EXPERIMENTAL)"
403 depends on SPARC32_COMPAT && EXPERIMENTAL
405 This is experimental code which will enable you to run (many)
406 Solaris binaries on your SPARC Linux machine.
408 To compile this code as a module, choose M here: the
409 module will be called solaris.
414 bool "SMT (Hyperthreading) scheduler support"
418 SMT scheduler support improves the CPU scheduler's decision making
419 when dealing with UltraSPARC cpus at a cost of slightly increased
420 overhead in some places. If unsure say N here.
423 bool "Multi-core scheduler support"
427 Multi-core scheduler support improves the CPU scheduler's decision
428 making when dealing with multi-core CPU chips at a cost of slightly
429 increased overhead in some places. If unsure say N here.
431 source "kernel/Kconfig.preempt"
434 bool "Default bootloader kernel arguments"
437 string "Initial kernel command string"
438 depends on CMDLINE_BOOL
439 default "console=ttyS0,9600 root=/dev/sda1"
441 Say Y here if you want to be able to pass default arguments to
442 the kernel. This will be overridden by the bootloader, if you
443 use one (such as SILO). This is most useful if you want to boot
444 a kernel from TFTP, and want default options to be available
445 with having them passed on the command line.
447 NOTE: This option WILL override the PROM bootargs setting!
451 source "drivers/Kconfig"
453 source "drivers/sbus/char/Kconfig"
455 source "drivers/fc4/Kconfig"
459 menu "Instrumentation Support"
460 depends on EXPERIMENTAL
462 source "arch/sparc64/oprofile/Kconfig"
465 bool "Kprobes (EXPERIMENTAL)"
466 depends on KALLSYMS && EXPERIMENTAL && MODULES
468 Kprobes allows you to trap at almost any kernel address and
469 execute a callback function. register_kprobe() establishes
470 a probepoint and specifies the callback. Kprobes is useful
471 for kernel debugging, non-intrusive instrumentation and testing.
472 If in doubt, say "N".
475 source "arch/sparc64/Kconfig.debug"
477 source "security/Kconfig"
479 source "crypto/Kconfig"