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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.
4#
5
6mainmenu "Linux/UltraSPARC Kernel Configuration"
7
8config SPARC
9 bool
10 default y
11
12config SPARC64
13 bool
14 default y
15 help
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/>.
21
22config GENERIC_TIME
23 bool
24 default y
25
26config GENERIC_CLOCKEVENTS
27 bool
28 default y
29
30config 64BIT
31 def_bool y
32
33config MMU
34 bool
35 default y
36
37config QUICKLIST
38 bool
39 default y
40
41config STACKTRACE_SUPPORT
42 bool
43 default y
44
45config LOCKDEP_SUPPORT
46 bool
47 default y
48
49config ARCH_MAY_HAVE_PC_FDC
50 bool
51 default y
52
53config ARCH_HAS_ILOG2_U32
54 bool
55 default n
56
57config ARCH_HAS_ILOG2_U64
58 bool
59 default n
60
61config AUDIT_ARCH
62 bool
63 default y
64
65choice
66 prompt "Kernel page size"
67 default SPARC64_PAGE_SIZE_8KB
68
69config SPARC64_PAGE_SIZE_8KB
70 bool "8KB"
71 help
72 This lets you select the page size of the kernel.
73
74 8KB and 64KB work quite well, since Sparc ELF sections
75 provide for up to 64KB alignment.
76
77 Therefore, 512KB and 4MB are for expert hackers only.
78
79 If you don't know what to do, choose 8KB.
80
81config SPARC64_PAGE_SIZE_64KB
82 bool "64KB"
83
84config SPARC64_PAGE_SIZE_512KB
85 bool "512KB"
86
87config SPARC64_PAGE_SIZE_4MB
88 bool "4MB"
89
90endchoice
91
92config SECCOMP
93 bool "Enable seccomp to safely compute untrusted bytecode"
94 depends on PROC_FS
95 default y
96 help
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.
106
107 If unsure, say Y. Only embedded should say N here.
108
109source kernel/Kconfig.hz
110
111source "init/Kconfig"
112
113config SYSVIPC_COMPAT
114 bool
115 depends on COMPAT && SYSVIPC
116 default y
117
118config GENERIC_HARDIRQS
119 bool
120 default y
121
122menu "General machine setup"
123
124source "kernel/time/Kconfig"
125
126config SMP
127 bool "Symmetric multi-processing support"
128 ---help---
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
131 one CPU, say Y.
132
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.
138
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.
142
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>.
146
147 If you don't know what to do here, say N.
148
149config NR_CPUS
150 int "Maximum number of CPUs (2-64)"
151 range 2 64
152 depends on SMP
153 default "32"
154
155source "drivers/cpufreq/Kconfig"
156
157config US3_FREQ
158 tristate "UltraSPARC-III CPU Frequency driver"
159 depends on CPU_FREQ
160 select CPU_FREQ_TABLE
161 help
162 This adds the CPUFreq driver for UltraSPARC-III processors.
163
164 For details, take a look at <file:Documentation/cpu-freq>.
165
166 If in doubt, say N.
167
168config US2E_FREQ
169 tristate "UltraSPARC-IIe CPU Frequency driver"
170 depends on CPU_FREQ
171 select CPU_FREQ_TABLE
172 help
173 This adds the CPUFreq driver for UltraSPARC-IIe processors.
174
175 For details, take a look at <file:Documentation/cpu-freq>.
176
177 If in doubt, say N.
178
179# Global things across all Sun machines.
180config RWSEM_GENERIC_SPINLOCK
181 bool
182
183config RWSEM_XCHGADD_ALGORITHM
184 bool
185 default y
186
187config GENERIC_FIND_NEXT_BIT
188 bool
189 default y
190
191config GENERIC_HWEIGHT
192 bool
193 default y if !ULTRA_HAS_POPULATION_COUNT
194
195config GENERIC_CALIBRATE_DELAY
196 bool
197 default y
198
199choice
200 prompt "SPARC64 Huge TLB Page Size"
201 depends on HUGETLB_PAGE
202 default HUGETLB_PAGE_SIZE_4MB
203
204config HUGETLB_PAGE_SIZE_4MB
205 bool "4MB"
206
207config HUGETLB_PAGE_SIZE_512K
208 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB
209 bool "512K"
210
211config HUGETLB_PAGE_SIZE_64K
212 depends on !SPARC64_PAGE_SIZE_4MB && !SPARC64_PAGE_SIZE_512KB && !SPARC64_PAGE_SIZE_64KB
213 bool "64K"
214
215endchoice
216
217endmenu
218
219config ARCH_SELECT_MEMORY_MODEL
220 def_bool y
221
222config ARCH_SPARSEMEM_ENABLE
223 def_bool y
224
225config ARCH_SPARSEMEM_DEFAULT
226 def_bool y
227 select SPARSEMEM_STATIC
228
229source "mm/Kconfig"
230
231config ISA
232 bool
233 help
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.
239
240config ISAPNP
241 bool
242 help
243 Say Y here if you would like support for ISA Plug and Play devices.
244 Some information is in <file:Documentation/isapnp.txt>.
245
246 To compile this driver as a module, choose M here: the
247 module will be called isapnp.
248
249 If unsure, say Y.
250
251config EISA
252 bool
253 ---help---
254 The Extended Industry Standard Architecture (EISA) bus was
255 developed as an open alternative to the IBM MicroChannel bus.
256
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.
261
262 Say Y here if you are building a kernel for an EISA-based machine.
263
264 Otherwise, say N.
265
266config MCA
267 bool
268 help
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.
273
274config PCMCIA
275 tristate
276 ---help---
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.
283
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>.
288
289 To compile this driver as modules, choose M here: the
290 modules will be called pcmcia_core and ds.
291
292config SBUS
293 bool
294 default y
295
296config SBUSCHAR
297 bool
298 default y
299
300config SUN_AUXIO
301 bool
302 default y
303
304config SUN_IO
305 bool
306 default y
307
308config PCI
309 bool "PCI support"
310 select ARCH_SUPPORTS_MSI
311 help
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.
316
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
320 doesn't.
321
322config PCI_DOMAINS
323 bool
324 default PCI
325
326source "drivers/pci/Kconfig"
327
328config SUN_OPENPROMFS
329 tristate "Openprom tree appears in /proc/openprom"
330 help
331 If you say Y, the OpenPROM device tree will be available as a
332 virtual file system, which you can mount to /proc/openprom by "mount
333 -t openpromfs none /proc/openprom".
334
335 To compile the /proc/openprom support as a module, choose M here: the
336 module will be called openpromfs. If unsure, choose M.
337
338config SPARC32_COMPAT
339 bool "Kernel support for Linux/Sparc 32bit binary compatibility"
340 help
341 This allows you to run 32-bit binaries on your Ultra.
342 Everybody wants this; say Y.
343
344config COMPAT
345 bool
346 depends on SPARC32_COMPAT
347 default y
348
349config BINFMT_ELF32
350 bool "Kernel support for 32-bit ELF binaries"
351 depends on SPARC32_COMPAT
352 help
353 This allows you to run 32-bit Linux/ELF binaries on your Ultra.
354 Everybody wants this; say Y.
355
356config BINFMT_AOUT32
357 bool "Kernel support for 32-bit (ie. SunOS) a.out binaries"
358 depends on SPARC32_COMPAT
359 help
360 This allows you to run 32-bit a.out format binaries on your Ultra.
361 If you want to run SunOS binaries (see SunOS binary emulation below)
362 or other a.out binaries, say Y. If unsure, say N.
363
364menu "Executable file formats"
365
366source "fs/Kconfig.binfmt"
367
368config SUNOS_EMUL
369 bool "SunOS binary emulation"
370 depends on BINFMT_AOUT32
371 help
372 This allows you to run most SunOS binaries. If you want to do this,
373 say Y here and place appropriate files in /usr/gnemul/sunos. See
374 <http://www.ultralinux.org/faq.html> for more information. If you
375 want to run SunOS binaries on an Ultra you must also say Y to
376 "Kernel support for 32-bit a.out binaries" above.
377
378config SOLARIS_EMUL
379 tristate "Solaris binary emulation (EXPERIMENTAL)"
380 depends on SPARC32_COMPAT && EXPERIMENTAL
381 help
382 This is experimental code which will enable you to run (many)
383 Solaris binaries on your SPARC Linux machine.
384
385 To compile this code as a module, choose M here: the
386 module will be called solaris.
387
388endmenu
389
390config SCHED_SMT
391 bool "SMT (Hyperthreading) scheduler support"
392 depends on SMP
393 default y
394 help
395 SMT scheduler support improves the CPU scheduler's decision making
396 when dealing with UltraSPARC cpus at a cost of slightly increased
397 overhead in some places. If unsure say N here.
398
399source "kernel/Kconfig.preempt"
400
401config CMDLINE_BOOL
402 bool "Default bootloader kernel arguments"
403
404config CMDLINE
405 string "Initial kernel command string"
406 depends on CMDLINE_BOOL
407 default "console=ttyS0,9600 root=/dev/sda1"
408 help
409 Say Y here if you want to be able to pass default arguments to
410 the kernel. This will be overridden by the bootloader, if you
411 use one (such as SILO). This is most useful if you want to boot
412 a kernel from TFTP, and want default options to be available
413 with having them passed on the command line.
414
415 NOTE: This option WILL override the PROM bootargs setting!
416
417source "net/Kconfig"
418
419source "drivers/Kconfig"
420
421source "drivers/sbus/char/Kconfig"
422
423source "drivers/fc4/Kconfig"
424
425source "fs/Kconfig"
426
427menu "Instrumentation Support"
428 depends on EXPERIMENTAL
429
430source "arch/sparc64/oprofile/Kconfig"
431
432config KPROBES
433 bool "Kprobes (EXPERIMENTAL)"
434 depends on KALLSYMS && EXPERIMENTAL && MODULES
435 help
436 Kprobes allows you to trap at almost any kernel address and
437 execute a callback function. register_kprobe() establishes
438 a probepoint and specifies the callback. Kprobes is useful
439 for kernel debugging, non-intrusive instrumentation and testing.
440 If in doubt, say "N".
441endmenu
442
443source "arch/sparc64/Kconfig.debug"
444
445source "security/Kconfig"
446
447source "crypto/Kconfig"
448
449source "lib/Kconfig"