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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux/SuperH Kernel Configuration"
7
8config SUPERH
9 bool
10 default y
Paul Mundt7a440c92006-09-27 18:18:31 +090011 select EMBEDDED
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 help
13 The SuperH is a RISC processor targeted for use in embedded systems
14 and consumer electronics; it was also used in the Sega Dreamcast
15 gaming console. The SuperH port has a home page at
16 <http://www.linux-sh.org/>.
17
Linus Torvalds1da177e2005-04-16 15:20:36 -070018config RWSEM_GENERIC_SPINLOCK
19 bool
20 default y
21
22config RWSEM_XCHGADD_ALGORITHM
23 bool
24
Akinobu Mitae2268c72006-03-26 01:39:35 -080025config GENERIC_FIND_NEXT_BIT
26 bool
27 default y
28
29config GENERIC_HWEIGHT
30 bool
31 default y
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033config GENERIC_HARDIRQS
34 bool
35 default y
36
37config GENERIC_IRQ_PROBE
38 bool
39 default y
40
41config GENERIC_CALIBRATE_DELAY
42 bool
43 default y
44
Paul Mundtcad82442006-01-16 22:14:19 -080045config GENERIC_IOMAP
46 bool
47
Paul Mundt45882142006-10-04 13:21:45 +090048config GENERIC_TIME
49 def_bool n
50
Paul Mundt0a9b0db2007-01-24 21:56:20 +090051config SYS_SUPPORTS_APM_EMULATION
52 bool
53
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +010054config ARCH_MAY_HAVE_PC_FDC
55 bool
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +010056
Paul Mundtafbfb522006-12-04 18:17:28 +090057config STACKTRACE_SUPPORT
58 bool
59 default y
60
61config LOCKDEP_SUPPORT
62 bool
63 default y
64
David Howellsf0d1b0b2006-12-08 02:37:49 -080065config ARCH_HAS_ILOG2_U32
66 bool
67 default n
68
69config ARCH_HAS_ILOG2_U64
70 bool
71 default n
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073source "init/Kconfig"
74
75menu "System type"
76
Paul Mundtbc8fb5d2006-09-27 18:09:34 +090077config SOLUTION_ENGINE
78 bool
79
Linus Torvalds1da177e2005-04-16 15:20:36 -070080choice
81 prompt "SuperH system type"
82 default SH_UNKNOWN
83
84config SH_SOLUTION_ENGINE
85 bool "SolutionEngine"
Paul Mundtbc8fb5d2006-09-27 18:09:34 +090086 select SOLUTION_ENGINE
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 help
88 Select SolutionEngine if configuring for a Hitachi SH7709
89 or SH7750 evaluation board.
90
91config SH_7751_SOLUTION_ENGINE
92 bool "SolutionEngine7751"
Paul Mundtbc8fb5d2006-09-27 18:09:34 +090093 select SOLUTION_ENGINE
Paul Mundtcad82442006-01-16 22:14:19 -080094 select CPU_SUBTYPE_SH7751
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 help
96 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
97 evaluation board.
98
99config SH_7300_SOLUTION_ENGINE
100 bool "SolutionEngine7300"
Paul Mundtbc8fb5d2006-09-27 18:09:34 +0900101 select SOLUTION_ENGINE
Paul Mundtcad82442006-01-16 22:14:19 -0800102 select CPU_SUBTYPE_SH7300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 help
Paul Mundtbc8fb5d2006-09-27 18:09:34 +0900104 Select 7300 SolutionEngine if configuring for a Hitachi
105 SH7300(SH-Mobile V) evaluation board.
106
107config SH_7343_SOLUTION_ENGINE
108 bool "SolutionEngine7343"
109 select SOLUTION_ENGINE
110 select CPU_SUBTYPE_SH7343
111 help
112 Select 7343 SolutionEngine if configuring for a Hitachi
113 SH7343 (SH-Mobile 3AS) evaluation board.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
115config SH_73180_SOLUTION_ENGINE
116 bool "SolutionEngine73180"
Paul Mundtbc8fb5d2006-09-27 18:09:34 +0900117 select SOLUTION_ENGINE
118 select CPU_SUBTYPE_SH73180
119 help
120 Select 73180 SolutionEngine if configuring for a Hitachi
121 SH73180(SH-Mobile 3) evaluation board.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
123config SH_7751_SYSTEMH
124 bool "SystemH7751R"
Paul Mundtcad82442006-01-16 22:14:19 -0800125 select CPU_SUBTYPE_SH7751R
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 help
127 Select SystemH if you are configuring for a Renesas SystemH
128 7751R evaluation board.
129
Paul Mundtcad82442006-01-16 22:14:19 -0800130config SH_HP6XX
131 bool "HP6XX"
Paul Mundt0a9b0db2007-01-24 21:56:20 +0900132 select SYS_SUPPORTS_APM_EMULATION
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 help
Paul Mundtcad82442006-01-16 22:14:19 -0800134 Select HP6XX if configuring for a HP jornada HP6xx.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 More information (hardware only) at
136 <http://www.hp.com/jornada/>.
137
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138config SH_SATURN
139 bool "Saturn"
Paul Mundtcad82442006-01-16 22:14:19 -0800140 select CPU_SUBTYPE_SH7604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 help
142 Select Saturn if configuring for a SEGA Saturn.
143
144config SH_DREAMCAST
145 bool "Dreamcast"
Paul Mundtcad82442006-01-16 22:14:19 -0800146 select CPU_SUBTYPE_SH7091
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 help
148 Select Dreamcast if configuring for a SEGA Dreamcast.
149 More information at
150 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
151 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153config SH_MPC1211
Paul Mundtcad82442006-01-16 22:14:19 -0800154 bool "Interface MPC1211"
155 help
156 CTP/PCI-SH02 is a CPU module computer that is produced
157 by Interface Corporation.
158 More information at <http://www.interface.co.jp>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
160config SH_SH03
Paul Mundtcad82442006-01-16 22:14:19 -0800161 bool "Interface CTP/PCI-SH03"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 help
Paul Mundtcad82442006-01-16 22:14:19 -0800163 CTP/PCI-SH03 is a CPU module computer that is produced
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 by Interface Corporation.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165 More information at <http://www.interface.co.jp>
166
167config SH_SECUREEDGE5410
168 bool "SecureEdge5410"
Paul Mundtcad82442006-01-16 22:14:19 -0800169 select CPU_SUBTYPE_SH7751R
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 help
171 Select SecureEdge5410 if configuring for a SnapGear SH board.
172 This includes both the OEM SecureEdge products as well as the
173 SME product line.
174
175config SH_HS7751RVOIP
176 bool "HS7751RVOIP"
Paul Mundtcad82442006-01-16 22:14:19 -0800177 select CPU_SUBTYPE_SH7751R
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 help
179 Select HS7751RVOIP if configuring for a Renesas Technology
180 Sales VoIP board.
181
Paul Mundt91b91d02006-09-27 18:08:33 +0900182config SH_7710VOIPGW
183 bool "SH7710-VOIP-GW"
184 select CPU_SUBTYPE_SH7710
185 help
186 Select this option to build a kernel for the SH7710 based
187 VOIP GW.
188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189config SH_RTS7751R2D
190 bool "RTS7751R2D"
Paul Mundtcad82442006-01-16 22:14:19 -0800191 select CPU_SUBTYPE_SH7751R
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 help
193 Select RTS7751R2D if configuring for a Renesas Technology
194 Sales SH-Graphics board.
195
Paul Mundtcad82442006-01-16 22:14:19 -0800196config SH_R7780RP
197 bool "R7780RP-1"
198 select CPU_SUBTYPE_SH7780
199 help
200 Select R7780RP-1 if configuring for a Renesas Solutions
201 HIGHLANDER board.
202
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203config SH_EDOSK7705
204 bool "EDOSK7705"
Paul Mundtcad82442006-01-16 22:14:19 -0800205 select CPU_SUBTYPE_SH7705
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
207config SH_SH4202_MICRODEV
208 bool "SH4-202 MicroDev"
Paul Mundtcad82442006-01-16 22:14:19 -0800209 select CPU_SUBTYPE_SH4_202
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 help
211 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
212 with an SH4-202 CPU.
213
Paul Mundtcad82442006-01-16 22:14:19 -0800214config SH_LANDISK
215 bool "LANDISK"
216 select CPU_SUBTYPE_SH7751R
217 help
218 I-O DATA DEVICE, INC. "LANDISK Series" support.
219
220config SH_TITAN
221 bool "TITAN"
222 select CPU_SUBTYPE_SH7751R
223 help
224 Select Titan if you are configuring for a Nimble Microsystems
225 NetEngine NP51R.
226
Takashi YOSHII51e22e72006-09-27 17:41:31 +0900227config SH_SHMIN
228 bool "SHMIN"
229 select CPU_SUBTYPE_SH7706
230 help
Matt LaPlante3cb2fcc2006-11-30 05:22:59 +0100231 Select SHMIN if configuring for the SHMIN board.
Takashi YOSHII51e22e72006-09-27 17:41:31 +0900232
Yoshinori Sato9d4436a2006-11-05 15:40:13 +0900233config SH_7206_SOLUTION_ENGINE
234 bool "SolutionEngine7206"
235 select CPU_SUBTYPE_SH7206
236 help
237 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
238 evaluation board.
239
240config SH_7619_SOLUTION_ENGINE
241 bool "SolutionEngine7619"
242 select CPU_SUBTYPE_SH7619
243 help
244 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
245 evaluation board.
246
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247config SH_UNKNOWN
248 bool "BareCPU"
249 help
250 "Bare CPU" aka "unknown" means an SH-based system which is not one
251 of the specific ones mentioned above, which means you need to enter
252 all sorts of stuff like CONFIG_MEMORY_START because the config
253 system doesn't already know what it is. You get a machine vector
254 without any platform-specific code in it, so things like the RTC may
255 not work.
256
257 This option is for the early stages of porting to a new machine.
258
259endchoice
260
Paul Mundtcad82442006-01-16 22:14:19 -0800261source "arch/sh/mm/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263config CF_ENABLER
264 bool "Compact Flash Enabler support"
Paul Mundt5a4053b2006-09-27 18:00:19 +0900265 depends on SH_SOLUTION_ENGINE || SH_UNKNOWN || SH_SH03
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 ---help---
267 Compact Flash is a small, removable mass storage device introduced
268 in 1994 originally as a PCMCIA device. If you say `Y' here, you
269 compile in support for Compact Flash devices directly connected to
270 a SuperH processor. A Compact Flash FAQ is available at
271 <http://www.compactflash.org/faqs/faq.htm>.
272
273 If your board has "Directly Connected" CompactFlash at area 5 or 6,
274 you may want to enable this option. Then, you can use CF as
275 primary IDE drive (only tested for SanDisk).
276
277 If in doubt, select 'N'.
278
279choice
280 prompt "Compact Flash Connection Area"
281 depends on CF_ENABLER
282 default CF_AREA6
283
284config CF_AREA5
285 bool "Area5"
286 help
287 If your board has "Directly Connected" CompactFlash, You should
288 select the area where your CF is connected to.
289
290 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
291 - "Area6" if it is connected to Area 6 (0x18000000)
292
Paul Mundt5a4053b2006-09-27 18:00:19 +0900293 "Area6" will work for most boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294
295config CF_AREA6
296 bool "Area6"
297
298endchoice
299
300config CF_BASE_ADDR
301 hex
302 depends on CF_ENABLER
303 default "0xb8000000" if CF_AREA6
304 default "0xb4000000" if CF_AREA5
305
Paul Mundtcad82442006-01-16 22:14:19 -0800306menu "Processor features"
307
Paul Mundt53644082006-11-21 11:12:19 +0900308choice
309 prompt "Endianess selection"
310 default CPU_LITTLE_ENDIAN
Paul Mundtcad82442006-01-16 22:14:19 -0800311 help
312 Some SuperH machines can be configured for either little or big
Paul Mundt53644082006-11-21 11:12:19 +0900313 endian byte order. These modes require different kernels.
314
315config CPU_LITTLE_ENDIAN
316 bool "Little Endian"
317
318config CPU_BIG_ENDIAN
319 bool "Big Endian"
320
321endchoice
Paul Mundtcad82442006-01-16 22:14:19 -0800322
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323config SH_FPU
324 bool "FPU support"
325 depends on !CPU_SH3
326 default y
327 help
328 Selecting this option will enable support for SH processors that
329 have FPU units (ie, SH77xx).
330
331 This option must be set in order to enable the FPU.
332
Takashi YOSHII4b565682006-09-27 17:15:32 +0900333config SH_FPU_EMU
334 bool "FPU emulation support"
335 depends on !SH_FPU && EXPERIMENTAL
336 default n
337 help
338 Selecting this option will enable support for software FPU emulation.
339 Most SH-3 users will want to say Y here, whereas most SH-4 users will
340 want to say N.
341
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342config SH_DSP
343 bool "DSP support"
Paul Mundte5723e02006-09-27 17:38:11 +0900344 default y if SH4AL_DSP || !CPU_SH4
345 default n
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 help
347 Selecting this option will enable support for SH processors that
Paul Mundte5723e02006-09-27 17:38:11 +0900348 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
350 This option must be set in order to enable the DSP.
351
352config SH_ADC
353 bool "ADC support"
354 depends on CPU_SH3
355 default y
356 help
357 Selecting this option will allow the Linux kernel to use SH3 on-chip
358 ADC module.
359
360 If unsure, say N.
361
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362config SH_STORE_QUEUES
363 bool "Support for Store Queues"
364 depends on CPU_SH4
365 help
366 Selecting this option will enable an in-kernel API for manipulating
367 the store queues integrated in the SH-4 processors.
368
Paul Mundtcad82442006-01-16 22:14:19 -0800369config CPU_HAS_INTEVT
370 bool
371
372config CPU_HAS_PINT_IRQ
373 bool
374
Paul Mundtba463932006-09-27 18:01:16 +0900375config CPU_HAS_MASKREG_IRQ
376 bool
377
Paul Mundtcad82442006-01-16 22:14:19 -0800378config CPU_HAS_INTC2_IRQ
379 bool
380
Jamie Lenehanea0f8fe2006-12-06 12:05:02 +0900381config CPU_HAS_IPR_IRQ
382 bool
383
Paul Mundtcad82442006-01-16 22:14:19 -0800384config CPU_HAS_SR_RB
385 bool "CPU has SR.RB"
386 depends on CPU_SH3 || CPU_SH4
387 default y
388 help
389 This will enable the use of SR.RB register bank usage. Processors
390 that are lacking this bit must have another method in place for
391 accomplishing what is taken care of by the banked registers.
392
393 See <file:Documentation/sh/register-banks.txt> for further
394 information on SR.RB and register banking in the kernel in general.
395
Stuart Menefy9b3a53a2006-11-24 11:42:24 +0900396config CPU_HAS_PTEA
397 bool
398
Paul Mundtcad82442006-01-16 22:14:19 -0800399endmenu
400
401menu "Timer support"
Paul Mundt45882142006-10-04 13:21:45 +0900402depends on !GENERIC_TIME
Paul Mundtcad82442006-01-16 22:14:19 -0800403
404config SH_TMU
405 bool "TMU timer support"
Yoshinori Sato9d4436a2006-11-05 15:40:13 +0900406 depends on CPU_SH3 || CPU_SH4
Paul Mundtcad82442006-01-16 22:14:19 -0800407 default y
408 help
409 This enables the use of the TMU as the system timer.
410
Yoshinori Sato9d4436a2006-11-05 15:40:13 +0900411config SH_CMT
412 bool "CMT timer support"
413 depends on CPU_SH2
414 default y
415 help
416 This enables the use of the CMT as the system timer.
417
418config SH_MTU2
419 bool "MTU2 timer support"
420 depends on CPU_SH2A
421 default n
422 help
423 This enables the use of the MTU2 as the system timer.
424
Paul Mundtcad82442006-01-16 22:14:19 -0800425endmenu
426
Paul Mundte8fb67f2006-09-27 13:56:28 +0900427source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
Paul Mundtcad82442006-01-16 22:14:19 -0800428
Paul Mundt36efc352006-09-27 14:02:09 +0900429source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
Paul Mundtcad82442006-01-16 22:14:19 -0800430
Paul Mundt5283ecb2006-09-27 15:59:17 +0900431source "arch/sh/boards/renesas/r7780rp/Kconfig"
432
Paul Mundt417528a2006-11-20 11:18:30 +0900433config SH_TIMER_IRQ
434 int
435 default "28" if CPU_SUBTYPE_SH7780
436 default "86" if CPU_SUBTYPE_SH7619
437 default "140" if CPU_SUBTYPE_SH7206
438 default "16"
439
Paul Mundtbd156142006-12-01 13:23:47 +0900440config NO_IDLE_HZ
441 bool "Dynamic tick timer"
442 help
443 Select this option if you want to disable continuous timer ticks
444 and have them programmed to occur as required. This option saves
445 power as the system can remain in idle state for longer.
446
447 By default dynamic tick is disabled during the boot, and can be
448 manually enabled with:
449
450 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
451
452 Alternatively, if you want dynamic tick automatically enabled
453 during boot, pass "dyntick=enable" via the kernel command string.
454
455 Please note that dynamic tick may affect the accuracy of
456 timekeeping on some platforms depending on the implementation.
457
Paul Mundtcad82442006-01-16 22:14:19 -0800458config SH_PCLK_FREQ
459 int "Peripheral clock frequency (in Hz)"
Yoshinori Sato9d4436a2006-11-05 15:40:13 +0900460 default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
461 default "31250000" if CPU_SUBTYPE_SH7619
462 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
463 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
464 CPU_SUBTYPE_SH7206
Paul Mundtcad82442006-01-16 22:14:19 -0800465 default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
466 default "60000000" if CPU_SUBTYPE_SH7751
Paul Mundtcad82442006-01-16 22:14:19 -0800467 default "66000000" if CPU_SUBTYPE_SH4_202
468 help
469 This option is used to specify the peripheral clock frequency.
470 This is necessary for determining the reference clock value on
471 platforms lacking an RTC.
472
Yoshinori Sato9d4436a2006-11-05 15:40:13 +0900473config SH_CLK_MD
474 int "CPU Mode Pin Setting"
Andrew Morton506b85f2007-02-07 13:56:44 +0900475 default 0
Yoshinori Sato9d4436a2006-11-05 15:40:13 +0900476 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
477 help
Yoshinori Sato11cbb702006-12-07 18:07:27 +0900478 MD2 - MD0 pin setting.
Yoshinori Sato9d4436a2006-11-05 15:40:13 +0900479
Paul Mundtcad82442006-01-16 22:14:19 -0800480menu "CPU Frequency scaling"
481
482source "drivers/cpufreq/Kconfig"
483
484config SH_CPU_FREQ
485 tristate "SuperH CPU Frequency driver"
486 depends on CPU_FREQ
487 select CPU_FREQ_TABLE
488 help
489 This adds the cpufreq driver for SuperH. At present, only
490 the SH-4 is supported.
491
492 For details, take a look at <file:Documentation/cpu-freq>.
493
494 If unsure, say N.
495
496endmenu
497
498source "arch/sh/drivers/dma/Kconfig"
499
500source "arch/sh/cchips/Kconfig"
501
502config HEARTBEAT
503 bool "Heartbeat LED"
Paul Mundt5a4053b2006-09-27 18:00:19 +0900504 depends on SH_MPC1211 || SH_SH03 || \
Paul Mundte65fa9f2007-02-14 15:06:09 +0900505 SOLUTION_ENGINE || \
Paul Mundt3b4d9532007-02-13 15:42:28 +0900506 SH_RTS7751R2D || SH_SH4202_MICRODEV || SH_LANDISK || \
507 SH_R7780RP
Paul Mundtcad82442006-01-16 22:14:19 -0800508 help
509 Use the power-on LED on your machine as a load meter. The exact
510 behavior is platform-dependent, but normally the flash frequency is
511 a hyperbolic function of the 5-minute load average.
512
Paul Mundt9f5e8ee2006-11-24 11:22:57 +0900513source "arch/sh/drivers/Kconfig"
514
Paul Mundtcad82442006-01-16 22:14:19 -0800515endmenu
516
517config ISA_DMA_API
518 bool
Adrian Bunk05efc672006-02-17 13:52:42 -0800519 depends on SH_MPC1211
Paul Mundtcad82442006-01-16 22:14:19 -0800520 default y
521
522menu "Kernel features"
523
Paul Mundt91b91d02006-09-27 18:08:33 +0900524source kernel/Kconfig.hz
525
Paul Mundtcad82442006-01-16 22:14:19 -0800526config KEXEC
527 bool "kexec system call (EXPERIMENTAL)"
528 depends on EXPERIMENTAL
529 help
530 kexec is a system call that implements the ability to shutdown your
531 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400532 but it is independent of the system firmware. And like a reboot
Paul Mundtcad82442006-01-16 22:14:19 -0800533 you can start any kernel with it, not just Linux.
534
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400535 The name comes from the similarity to the exec system call.
Paul Mundtcad82442006-01-16 22:14:19 -0800536
537 It is an ongoing process to be certain the hardware in a machine
538 is properly shutdown, so do not be surprised if this code does not
539 initially work for you. It may help to enable device hotplugging
540 support. As of this writing the exact hardware interface is
541 strongly in flux, so no good recommendation can be made.
542
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543config SMP
544 bool "Symmetric multi-processing support"
545 ---help---
546 This enables support for systems with more than one CPU. If you have
547 a system with only one CPU, like most personal computers, say N. If
548 you have a system with more than one CPU, say Y.
549
550 If you say N here, the kernel will run on single and multiprocessor
551 machines, but will use only one CPU of a multiprocessor machine. If
552 you say Y here, the kernel will run on many, but not all,
553 singleprocessor machines. On a singleprocessor machine, the kernel
554 will run faster if you say N here.
555
556 People using multiprocessor machines who say Y here should also say
557 Y to "Enhanced Real Time Clock Support", below.
558
559 See also the <file:Documentation/smp.txt>,
560 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
561 at <http://www.tldp.org/docs.html#howto>.
562
563 If you don't know what to do here, say N.
564
565config NR_CPUS
566 int "Maximum number of CPUs (2-32)"
567 range 2 32
568 depends on SMP
569 default "2"
570 help
571 This allows you to specify the maximum number of CPUs which this
572 kernel will support. The maximum supported value is 32 and the
573 minimum value which makes sense is 2.
574
575 This is purely to save memory - each supported CPU adds
576 approximately eight kilobytes to the kernel image.
577
Paul Mundt91b91d02006-09-27 18:08:33 +0900578source "kernel/Kconfig.preempt"
579
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700580config NODES_SHIFT
581 int
582 default "1"
583 depends on NEED_MULTIPLE_NODES
584
Paul Mundtcad82442006-01-16 22:14:19 -0800585endmenu
586
587menu "Boot options"
588
589config ZERO_PAGE_OFFSET
590 hex "Zero page offset"
591 default "0x00004000" if SH_MPC1211 || SH_SH03
Paul Mundt7a847f82006-12-26 15:29:19 +0900592 default "0x00010000" if PAGE_SIZE_64KB
593 default "0x00002000" if PAGE_SIZE_8KB
Paul Mundtcad82442006-01-16 22:14:19 -0800594 default "0x00001000"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 help
Paul Mundtcad82442006-01-16 22:14:19 -0800596 This sets the default offset of zero page.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597
Paul Mundtcad82442006-01-16 22:14:19 -0800598config BOOT_LINK_OFFSET
599 hex "Link address offset for booting"
600 default "0x00800000"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 help
Paul Mundtcad82442006-01-16 22:14:19 -0800602 This option allows you to set the link address offset of the zImage.
603 This can be useful if you are on a board which has a small amount of
604 memory.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
Paul Mundtcad82442006-01-16 22:14:19 -0800606config UBC_WAKEUP
607 bool "Wakeup UBC on startup"
608 help
609 Selecting this option will wakeup the User Break Controller (UBC) on
610 startup. Although the UBC is left in an awake state when the processor
611 comes up, some boot loaders misbehave by putting the UBC to sleep in a
612 power saving state, which causes issues with things like ptrace().
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613
614 If unsure, say N.
615
Paul Mundtcad82442006-01-16 22:14:19 -0800616config CMDLINE_BOOL
617 bool "Default bootloader kernel arguments"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618
Paul Mundtcad82442006-01-16 22:14:19 -0800619config CMDLINE
620 string "Initial kernel command string"
621 depends on CMDLINE_BOOL
622 default "console=ttySC1,115200"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
624endmenu
625
Paul Mundtcad82442006-01-16 22:14:19 -0800626menu "Bus options"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627
628# Even on SuperH devices which don't have an ISA bus,
629# this variable helps the PCMCIA modules handle
630# IRQ requesting properly -- Greg Banks.
631#
632# Though we're generally not interested in it when
633# we're not using PCMCIA, so we make it dependent on
634# PCMCIA outright. -- PFM.
635config ISA
636 bool
Paul Mundtcad82442006-01-16 22:14:19 -0800637 default y if PCMCIA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 help
639 Find out whether you have ISA slots on your motherboard. ISA is the
640 name of a bus system, i.e. the way the CPU talks to the other stuff
641 inside your box. Other bus systems are PCI, EISA, MicroChannel
642 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
643 newer boards don't support it. If you have ISA, say Y, otherwise N.
644
645config EISA
646 bool
647 ---help---
648 The Extended Industry Standard Architecture (EISA) bus was
649 developed as an open alternative to the IBM MicroChannel bus.
650
651 The EISA bus provided some of the features of the IBM MicroChannel
652 bus while maintaining backward compatibility with cards made for
653 the older ISA bus. The EISA bus saw limited use between 1988 and
654 1995 when it was made obsolete by the PCI bus.
655
656 Say Y here if you are building a kernel for an EISA-based machine.
657
658 Otherwise, say N.
659
660config MCA
661 bool
662 help
663 MicroChannel Architecture is found in some IBM PS/2 machines and
664 laptops. It is a bus system similar to PCI or ISA. See
665 <file:Documentation/mca.txt> (and especially the web page given
666 there) before attempting to build an MCA bus kernel.
667
668config SBUS
669 bool
670
Paul Mundtcad82442006-01-16 22:14:19 -0800671config SUPERHYWAY
672 tristate "SuperHyway Bus support"
673 depends on CPU_SUBTYPE_SH4_202
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674
675source "arch/sh/drivers/pci/Kconfig"
676
677source "drivers/pci/Kconfig"
678
679source "drivers/pcmcia/Kconfig"
680
681source "drivers/pci/hotplug/Kconfig"
682
683endmenu
684
685menu "Executable file formats"
686
687source "fs/Kconfig.binfmt"
688
689endmenu
690
Andriy Skulysh3aa770e2006-09-27 16:20:22 +0900691menu "Power management options (EXPERIMENTAL)"
692depends on EXPERIMENTAL
693
694source kernel/power/Kconfig
695
Andriy Skulysh3aa770e2006-09-27 16:20:22 +0900696endmenu
697
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700698source "net/Kconfig"
699
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700source "drivers/Kconfig"
701
702source "fs/Kconfig"
703
704source "arch/sh/oprofile/Kconfig"
705
706source "arch/sh/Kconfig.debug"
707
708source "security/Kconfig"
709
710source "crypto/Kconfig"
711
712source "lib/Kconfig"