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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 Kernel Configuration"
7
8config ARM
9 bool
10 default y
Alessandro Zummo12b824f2006-03-27 01:16:35 -080011 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +000012 select SYS_SUPPORTS_APM_EMULATION
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 help
14 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000015 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000017 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 Europe. There is an ARM Linux project with a web page at
19 <http://www.arm.linux.org.uk/>.
20
Ralf Baechle75e71532007-02-09 17:08:58 +000021config SYS_SUPPORTS_APM_EMULATION
22 bool
23
Kevin Hilman746140c2006-09-22 00:16:30 +010024config GENERIC_TIME
25 bool
26 default n
27
Linus Torvalds1da177e2005-04-16 15:20:36 -070028config MMU
29 bool
30 default y
31
Al Viro5ea81762007-02-11 15:41:31 +000032config NO_IOPORT
33 bool
34 default n
35
Linus Torvalds1da177e2005-04-16 15:20:36 -070036config EISA
37 bool
38 ---help---
39 The Extended Industry Standard Architecture (EISA) bus was
40 developed as an open alternative to the IBM MicroChannel bus.
41
42 The EISA bus provided some of the features of the IBM MicroChannel
43 bus while maintaining backward compatibility with cards made for
44 the older ISA bus. The EISA bus saw limited use between 1988 and
45 1995 when it was made obsolete by the PCI bus.
46
47 Say Y here if you are building a kernel for an EISA-based machine.
48
49 Otherwise, say N.
50
51config SBUS
52 bool
53
54config MCA
55 bool
56 help
57 MicroChannel Architecture is found in some IBM PS/2 machines and
58 laptops. It is a bus system similar to PCI or ISA. See
59 <file:Documentation/mca.txt> (and especially the web page given
60 there) before attempting to build an MCA bus kernel.
61
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010062config GENERIC_HARDIRQS
63 bool
64 default y
65
Russell King7ad1bcb2006-08-27 12:07:02 +010066config TRACE_IRQFLAGS_SUPPORT
67 bool
68 default y
69
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010070config HARDIRQS_SW_RESEND
71 bool
72 default y
73
74config GENERIC_IRQ_PROBE
75 bool
76 default y
77
Linus Torvalds1da177e2005-04-16 15:20:36 -070078config RWSEM_GENERIC_SPINLOCK
79 bool
80 default y
81
82config RWSEM_XCHGADD_ALGORITHM
83 bool
84
David Howellsf0d1b0b2006-12-08 02:37:49 -080085config ARCH_HAS_ILOG2_U32
86 bool
87 default n
88
89config ARCH_HAS_ILOG2_U64
90 bool
91 default n
92
Akinobu Mitab89c3b12006-03-26 01:39:19 -080093config GENERIC_HWEIGHT
94 bool
95 default y
96
Linus Torvalds1da177e2005-04-16 15:20:36 -070097config GENERIC_CALIBRATE_DELAY
98 bool
99 default y
100
101config GENERIC_BUST_SPINLOCK
102 bool
103
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100104config ARCH_MAY_HAVE_PC_FDC
105 bool
106
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800107config ZONE_DMA
108 bool
109 default y
110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111config GENERIC_ISA_DMA
112 bool
113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114config FIQ
115 bool
116
Al Viro034d2f52005-12-19 16:27:59 -0500117config ARCH_MTD_XIP
118 bool
119
Hyok S. Choic760fc12006-03-27 15:18:50 +0100120config VECTORS_BASE
121 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900122 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100123 default DRAM_BASE if REMAP_VECTORS_TO_RAM
124 default 0x00000000
125 help
126 The base address of exception vectors.
127
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128source "init/Kconfig"
129
130menu "System Type"
131
132choice
133 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000134 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100136config ARCH_AAEC2000
137 bool "Agilent AAEC-2000 based"
138 select ARM_AMBA
139 help
140 This enables support for systems based on the Agilent AAEC-2000
141
142config ARCH_INTEGRATOR
143 bool "ARM Ltd. Integrator family"
144 select ARM_AMBA
145 select ICST525
146 help
147 Support for ARM's Integrator platform.
148
149config ARCH_REALVIEW
150 bool "ARM Ltd. RealView family"
151 select ARM_AMBA
152 select ICST307
153 help
154 This enables support for ARM Ltd RealView boards.
155
156config ARCH_VERSATILE
157 bool "ARM Ltd. Versatile family"
158 select ARM_AMBA
159 select ARM_VIC
160 select ICST307
161 help
162 This enables support for ARM Ltd Versatile board.
163
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100164config ARCH_AT91
165 bool "Atmel AT91"
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100166 help
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100167 This enables support for systems based on the Atmel AT91RM9200
168 and AT91SAM9xxx processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100169
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170config ARCH_CLPS7500
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100171 bool "Cirrus CL-PS7500FE"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +0100173 select ISA
Russell Kinge4169882007-02-26 21:07:30 +0000174 select NO_IOPORT
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000175 help
176 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
178config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100179 bool "Cirrus Logic CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000180 help
181 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
183config ARCH_CO285
184 bool "Co-EBSA285"
185 select FOOTBRIDGE
186 select FOOTBRIDGE_ADDIN
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000187 help
188 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189
190config ARCH_EBSA110
191 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100192 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000193 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 help
195 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000196 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 Ethernet interface, two PCMCIA sockets, two serial ports and a
198 parallel port.
199
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000200config ARCH_EP93XX
201 bool "EP93xx-based"
202 select ARM_AMBA
203 select ARM_VIC
204 help
205 This enables support for the Cirrus EP93xx series of CPUs.
206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207config ARCH_FOOTBRIDGE
208 bool "FootBridge"
209 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000210 help
211 Support for systems based on the DC21285 companion chip
212 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100214config ARCH_NETX
215 bool "Hilscher NetX based"
216 select ARM_VIC
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000217 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100218 This enables support for systems based on the Hilscher NetX Soc
219
220config ARCH_H720X
221 bool "Hynix HMS720x-based"
222 select ISA_DMA_API
223 help
224 This enables support for systems based on the Hynix HMS720x
225
226config ARCH_IMX
227 bool "IMX"
228 help
229 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100231config ARCH_IOP32X
232 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100233 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100234 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100235 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000236 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100237 Support for Intel's 80219 and IOP32X (XScale) family of
238 processors.
239
240config ARCH_IOP33X
241 bool "IOP33x-based"
242 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100243 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100244 select PCI
245 help
246 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
Dan Williams285f5fa2006-12-07 02:59:39 +0100248config ARCH_IOP13XX
249 bool "IOP13xx-based"
Dan Williams588ef762007-02-13 17:12:04 +0100250 depends on MMU
251 select PLAT_IOP
Dan Williams285f5fa2006-12-07 02:59:39 +0100252 select PCI
253 help
254 Support for Intel's IOP13XX (XScale) family of processors.
255
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256config ARCH_IXP4XX
257 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100258 depends on MMU
Kevin Hilman84904d02006-09-22 00:58:57 +0100259 select GENERIC_TIME
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000260 help
261 Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
263config ARCH_IXP2000
264 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100265 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100266 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000267 help
268 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100270config ARCH_IXP23XX
271 bool "IXP23XX-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100272 depends on MMU
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100273 select PCI
274 help
275 Support for Intel's IXP23xx (XScale) family of processors.
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277config ARCH_L7200
278 bool "LinkUp-L7200"
279 select FIQ
280 help
281 Say Y here if you intend to run this kernel on a LinkUp Systems
282 L7200 Software Development Board which uses an ARM720T processor.
283 Information on this board can be obtained at:
284
285 <http://www.linkupsys.com/>
286
287 If you have any questions or comments about the Linux kernel port
288 to this board, send e-mail to <sjhill@cotw.com>.
289
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100290config ARCH_NS9XXX
291 bool "NetSilicon NS9xxx"
292 help
293 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
294 System.
295
296 <http://www.digi.com/products/microprocessors/index.jsp>
297
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100298config ARCH_PNX4008
299 bool "Philips Nexperia PNX4008 Mobile"
300 help
301 This enables support for Philips PNX4008 mobile platform.
302
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303config ARCH_PXA
304 bool "PXA2xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100305 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500306 select ARCH_MTD_XIP
Nicolas Pitre45cf5ee2007-02-05 22:37:07 +0100307 select GENERIC_TIME
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000308 help
309 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
311config ARCH_RPC
312 bool "RiscPC"
313 select ARCH_ACORN
314 select FIQ
315 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100316 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000317 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000318 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 help
320 On the Acorn Risc-PC, Linux can support the internal IDE disk and
321 CD-ROM interface, serial and parallel port, and the floppy drive.
322
323config ARCH_SA1100
324 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100325 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100326 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500327 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000328 help
329 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330
331config ARCH_S3C2410
Ben Dookse4d06e32007-02-16 12:12:31 +0100332 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 help
334 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
335 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000336 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
338config ARCH_SHARK
339 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100340 select ISA
341 select ISA_DMA
342 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000343 help
344 Support for the StrongARM based Digital DNARD machine, also known
345 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
347config ARCH_LH7A40X
348 bool "Sharp LH7A40X"
349 help
350 Say Y here for systems based on one of the Sharp LH7A40X
351 System on a Chip processors. These CPUs include an ARM922T
352 core with a wide array of integrated devices for
353 hand-held and low-power applications.
354
355config ARCH_OMAP
356 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000357 help
358 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360endchoice
361
362source "arch/arm/mach-clps711x/Kconfig"
363
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000364source "arch/arm/mach-ep93xx/Kconfig"
365
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366source "arch/arm/mach-footbridge/Kconfig"
367
368source "arch/arm/mach-integrator/Kconfig"
369
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100370source "arch/arm/mach-iop32x/Kconfig"
371
372source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373
Dan Williams285f5fa2006-12-07 02:59:39 +0100374source "arch/arm/mach-iop13xx/Kconfig"
375
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376source "arch/arm/mach-ixp4xx/Kconfig"
377
378source "arch/arm/mach-ixp2000/Kconfig"
379
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100380source "arch/arm/mach-ixp23xx/Kconfig"
381
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382source "arch/arm/mach-pxa/Kconfig"
383
384source "arch/arm/mach-sa1100/Kconfig"
385
Tony Lindgrend48af152005-07-10 19:58:17 +0100386source "arch/arm/plat-omap/Kconfig"
387
388source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
Tony Lindgren1dbae812005-11-10 14:26:51 +0000390source "arch/arm/mach-omap2/Kconfig"
391
Ben Dooksa21765a2007-02-11 18:31:01 +0100392source "arch/arm/plat-s3c24xx/Kconfig"
393
394if ARCH_S3C2410
395source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100397source "arch/arm/mach-s3c2412/Kconfig"
398source "arch/arm/mach-s3c2440/Kconfig"
399source "arch/arm/mach-s3c2442/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100400source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100401endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
403source "arch/arm/mach-lh7a40x/Kconfig"
404
405source "arch/arm/mach-imx/Kconfig"
406
407source "arch/arm/mach-h720x/Kconfig"
408
409source "arch/arm/mach-versatile/Kconfig"
410
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100411source "arch/arm/mach-aaec2000/Kconfig"
412
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000413source "arch/arm/mach-realview/Kconfig"
414
Andrew Victor9d041262007-02-05 11:42:07 +0100415source "arch/arm/mach-at91/Kconfig"
SAN People73a59c12006-01-09 17:05:41 +0000416
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100417source "arch/arm/mach-netx/Kconfig"
418
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100419source "arch/arm/mach-ns9xxx/Kconfig"
420
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421# Definitions to make life easier
422config ARCH_ACORN
423 bool
424
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100425config PLAT_IOP
426 bool
427
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428source arch/arm/mm/Kconfig
429
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100430config IWMMXT
431 bool "Enable iWMMXt support"
Robert P. J. Day6340aa62007-02-17 19:05:24 +0100432 depends on CPU_XSCALE || CPU_XSC3
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100433 default y if PXA27x
434 help
435 Enable support for iWMMXt context switching at run time if
436 running on a CPU that supports it.
437
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
439config XSCALE_PMU
440 bool
441 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
442 default y
443
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100444if !MMU
445source "arch/arm/Kconfig-nommu"
446endif
447
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448endmenu
449
450source "arch/arm/common/Kconfig"
451
452config FORCE_MAX_ZONEORDER
453 int
454 depends on SA1111
455 default "9"
456
457menu "Bus support"
458
459config ARM_AMBA
460 bool
461
462config ISA
463 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 help
465 Find out whether you have ISA slots on your motherboard. ISA is the
466 name of a bus system, i.e. the way the CPU talks to the other stuff
467 inside your box. Other bus systems are PCI, EISA, MicroChannel
468 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
469 newer boards don't support it. If you have ISA, say Y, otherwise N.
470
Russell King065909b2006-01-04 15:44:16 +0000471# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472config ISA_DMA
473 bool
Russell King065909b2006-01-04 15:44:16 +0000474 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
Russell King065909b2006-01-04 15:44:16 +0000476# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100477config ISA_DMA_API
478 bool
Al Viro5cae8412005-05-04 05:39:22 +0100479
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480config PCI
Milan Svoboda68939122006-06-25 22:12:12 +0100481 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 help
483 Find out whether you have a PCI motherboard. PCI is the name of a
484 bus system, i.e. the way the CPU talks to the other stuff inside
485 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
486 VESA. If you have PCI, say Y, otherwise N.
487
488 The PCI-HOWTO, available from
489 <http://www.tldp.org/docs.html#howto>, contains valuable
490 information about which PCI hardware does work under Linux and which
491 doesn't.
492
493# Select the host bridge type
494config PCI_HOST_VIA82C505
495 bool
496 depends on PCI && ARCH_SHARK
497 default y
498
499source "drivers/pci/Kconfig"
500
501source "drivers/pcmcia/Kconfig"
502
503endmenu
504
505menu "Kernel Features"
506
507config SMP
508 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000509 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 help
511 This enables support for systems with more than one CPU. If you have
512 a system with only one CPU, like most personal computers, say N. If
513 you have a system with more than one CPU, say Y.
514
515 If you say N here, the kernel will run on single and multiprocessor
516 machines, but will use only one CPU of a multiprocessor machine. If
517 you say Y here, the kernel will run on many, but not all, single
518 processor machines. On a single processor machine, the kernel will
519 run faster if you say N here.
520
Arthur Othieno12c62c22005-09-10 00:26:22 -0700521 See also the <file:Documentation/smp.txt>,
522 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
524 <http://www.linuxdoc.org/docs.html#howto>.
525
526 If you don't know what to do here, say N.
527
528config NR_CPUS
529 int "Maximum number of CPUs (2-32)"
530 range 2 32
531 depends on SMP
532 default "4"
533
Russell Kinga054a812005-11-02 22:24:33 +0000534config HOTPLUG_CPU
535 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
536 depends on SMP && HOTPLUG && EXPERIMENTAL
537 help
538 Say Y here to experiment with turning CPUs off and on. CPUs
539 can be controlled through /sys/devices/system/cpu.
540
Russell King37ee16a2005-11-08 19:08:05 +0000541config LOCAL_TIMERS
542 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000543 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000544 default y
545 help
546 Enable support for local timers on SMP platforms, rather then the
547 legacy IPI broadcast method. Local timers allows the system
548 accounting to be spread across the timer interval, preventing a
549 "thundering herd" at every timer tick.
550
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551config PREEMPT
552 bool "Preemptible Kernel (EXPERIMENTAL)"
553 depends on EXPERIMENTAL
554 help
555 This option reduces the latency of the kernel when reacting to
556 real-time or interactive events by allowing a low priority process to
557 be preempted even if it is in kernel mode executing a system call.
558 This allows applications to run more reliably even when the system is
559 under load.
560
561 Say Y here if you are building a kernel for a desktop, embedded
562 or real-time system. Say N if you are unsure.
563
Russell King8749af62005-06-25 19:39:45 +0100564config NO_IDLE_HZ
565 bool "Dynamic tick timer"
566 help
567 Select this option if you want to disable continuous timer ticks
568 and have them programmed to occur as required. This option saves
569 power as the system can remain in idle state for longer.
570
571 By default dynamic tick is disabled during the boot, and can be
572 manually enabled with:
573
574 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
575
576 Alternatively, if you want dynamic tick automatically enabled
577 during boot, pass "dyntick=enable" via the kernel command string.
578
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100579 Please note that dynamic tick may affect the accuracy of
580 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100581 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
582 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100583
Russell Kingf8065812006-03-02 22:41:59 +0000584config HZ
585 int
586 default 128 if ARCH_L7200
587 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000588 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000589 default 100
590
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000591config AEABI
592 bool "Use the ARM EABI to compile the kernel"
593 help
594 This option allows for the kernel to be compiled using the latest
595 ARM ABI (aka EABI). This is only useful if you are using a user
596 space environment that is also compiled with EABI.
597
598 Since there are major incompatibilities between the legacy ABI and
599 EABI, especially with regard to structure member alignment, this
600 option also changes the kernel syscall calling convention to
601 disambiguate both ABIs and allow for backward compatibility support
602 (selected with CONFIG_OABI_COMPAT).
603
604 To use this you need GCC version 4.0.0 or later.
605
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000606config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000607 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000608 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000609 default y
610 help
611 This option preserves the old syscall interface along with the
612 new (ARM EABI) one. It also provides a compatibility layer to
613 intercept syscalls that have structure arguments which layout
614 in memory differs between the legacy ABI and the new ARM EABI
615 (only for non "thumb" binaries). This option adds a tiny
616 overhead to all syscalls and produces a slightly larger kernel.
617 If you know you'll be using only pure EABI user space then you
618 can say N here. If this option is not selected and you attempt
619 to execute a legacy ABI binary then the result will be
620 UNPREDICTABLE (in fact it can be predicted that it won't work
621 at all). If in doubt say Y.
622
Dave Hansen3f22ab22005-06-23 00:07:43 -0700623config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100625 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 help
627 Say Y to support efficient handling of discontiguous physical memory,
628 for architectures which are either NUMA (Non-Uniform Memory Access)
629 or have huge holes in the physical address space for other reasons.
630 See <file:Documentation/vm/numa> for more.
631
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700632config NODES_SHIFT
633 int
634 default "4" if ARCH_LH7A40X
635 default "2"
636 depends on NEED_MULTIPLE_NODES
637
Dave Hansen3f22ab22005-06-23 00:07:43 -0700638source "mm/Kconfig"
639
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640config LEDS
641 bool "Timer and CPU usage LEDs"
642 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
643 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
644 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
645 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000646 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Andrew Victor58a0cd72006-12-01 14:51:13 +0100647 ARCH_AT91 || MACH_TRIZEPS4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 help
649 If you say Y here, the LEDs on your machine will be used
650 to provide useful information about your current system status.
651
652 If you are compiling a kernel for a NetWinder or EBSA-285, you will
653 be able to select which LEDs are active using the options below. If
654 you are compiling a kernel for the EBSA-110 or the LART however, the
655 red LED will simply flash regularly to indicate that the system is
656 still functional. It is safe to say Y here if you have a CATS
657 system, but the driver will do nothing.
658
659config LEDS_TIMER
660 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
661 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
662 depends on LEDS
663 default y if ARCH_EBSA110
664 help
665 If you say Y here, one of the system LEDs (the green one on the
666 NetWinder, the amber one on the EBSA285, or the red one on the LART)
667 will flash regularly to indicate that the system is still
668 operational. This is mainly useful to kernel hackers who are
669 debugging unstable kernels.
670
671 The LART uses the same LED for both Timer LED and CPU usage LED
672 functions. You may choose to use both, but the Timer LED function
673 will overrule the CPU usage LED.
674
675config LEDS_CPU
676 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
677 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
678 depends on LEDS
679 help
680 If you say Y here, the red LED will be used to give a good real
681 time indication of CPU usage, by lighting whenever the idle task
682 is not currently executing.
683
684 The LART uses the same LED for both Timer LED and CPU usage LED
685 functions. You may choose to use both, but the Timer LED function
686 will overrule the CPU usage LED.
687
688config ALIGNMENT_TRAP
689 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +0900690 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 default y if !ARCH_EBSA110
692 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +0200693 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
695 address divisible by 4. On 32-bit ARM processors, these non-aligned
696 fetch/store instructions will be emulated in software if you say
697 here, which has a severe performance impact. This is necessary for
698 correct operation of some network protocols. With an IP-only
699 configuration it is safe to say N, otherwise say Y.
700
701endmenu
702
703menu "Boot options"
704
705# Compressed boot loader in ROM. Yes, we really want to ask about
706# TEXT and BSS so we preserve their values in the config files.
707config ZBOOT_ROM_TEXT
708 hex "Compressed ROM boot loader base address"
709 default "0"
710 help
711 The physical address at which the ROM-able zImage is to be
712 placed in the target. Platforms which normally make use of
713 ROM-able zImage formats normally set this to a suitable
714 value in their defconfig file.
715
716 If ZBOOT_ROM is not enabled, this has no effect.
717
718config ZBOOT_ROM_BSS
719 hex "Compressed ROM boot loader BSS address"
720 default "0"
721 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +0100722 The base address of an area of read/write memory in the target
723 for the ROM-able zImage which must be available while the
724 decompressor is running. It must be large enough to hold the
725 entire decompressed kernel plus an additional 128 KiB.
726 Platforms which normally make use of ROM-able zImage formats
727 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728
729 If ZBOOT_ROM is not enabled, this has no effect.
730
731config ZBOOT_ROM
732 bool "Compressed boot loader in ROM/flash"
733 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
734 help
735 Say Y here if you intend to execute your compressed kernel image
736 (zImage) directly from ROM or flash. If unsure, say N.
737
738config CMDLINE
739 string "Default kernel command string"
740 default ""
741 help
742 On some architectures (EBSA110 and CATS), there is currently no way
743 for the boot loader to pass arguments to the kernel. For these
744 architectures, you should supply some command-line options at build
745 time by entering them here. As a minimum, you should specify the
746 memory size and the root device (e.g., mem=64M root=/dev/nfs).
747
748config XIP_KERNEL
749 bool "Kernel Execute-In-Place from ROM"
750 depends on !ZBOOT_ROM
751 help
752 Execute-In-Place allows the kernel to run from non-volatile storage
753 directly addressable by the CPU, such as NOR flash. This saves RAM
754 space since the text section of the kernel is not loaded from flash
755 to RAM. Read-write sections, such as the data section and stack,
756 are still copied to RAM. The XIP kernel is not compressed since
757 it has to run directly from flash, so it will take more space to
758 store it. The flash address used to link the kernel object files,
759 and for storing it, is configuration dependent. Therefore, if you
760 say Y here, you must know the proper physical address where to
761 store the kernel image depending on your own flash memory usage.
762
763 Also note that the make target becomes "make xipImage" rather than
764 "make zImage" or "make Image". The final kernel binary to put in
765 ROM memory will be arch/arm/boot/xipImage.
766
767 If unsure, say N.
768
769config XIP_PHYS_ADDR
770 hex "XIP Kernel Physical Location"
771 depends on XIP_KERNEL
772 default "0x00080000"
773 help
774 This is the physical address in your flash memory the kernel will
775 be linked for and stored to. This address is dependent on your
776 own flash usage.
777
Richard Purdiec587e4a2007-02-06 21:29:00 +0100778config KEXEC
779 bool "Kexec system call (EXPERIMENTAL)"
780 depends on EXPERIMENTAL
781 help
782 kexec is a system call that implements the ability to shutdown your
783 current kernel, and to start another kernel. It is like a reboot
784 but it is indepedent of the system firmware. And like a reboot
785 you can start any kernel with it, not just Linux.
786
787 It is an ongoing process to be certain the hardware in a machine
788 is properly shutdown, so do not be surprised if this code does not
789 initially work for you. It may help to enable device hotplugging
790 support.
791
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792endmenu
793
Pavel Pisa3c8cd0c2006-12-06 17:25:04 +0100794if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795
796menu "CPU Frequency scaling"
797
798source "drivers/cpufreq/Kconfig"
799
800config CPU_FREQ_SA1100
801 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100802 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 default y
804
805config CPU_FREQ_SA1110
806 bool
807 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
808 default y
809
810config CPU_FREQ_INTEGRATOR
811 tristate "CPUfreq driver for ARM Integrator CPUs"
812 depends on ARCH_INTEGRATOR && CPU_FREQ
813 default y
814 help
815 This enables the CPUfreq driver for ARM Integrator CPUs.
816
817 For details, take a look at <file:Documentation/cpu-freq>.
818
819 If in doubt, say Y.
820
Pavel Pisa3c8cd0c2006-12-06 17:25:04 +0100821config CPU_FREQ_IMX
822 tristate "CPUfreq driver for i.MX CPUs"
823 depends on ARCH_IMX && CPU_FREQ
824 default n
825 help
826 This enables the CPUfreq driver for i.MX CPUs.
827
828 If in doubt, say N.
829
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830endmenu
831
832endif
833
834menu "Floating point emulation"
835
836comment "At least one emulation must be selected"
837
838config FPE_NWFPE
839 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000840 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841 ---help---
842 Say Y to include the NWFPE floating point emulator in the kernel.
843 This is necessary to run most binaries. Linux does not currently
844 support floating point hardware so you need to say Y here even if
845 your machine has an FPA or floating point co-processor podule.
846
847 You may say N here if you are going to load the Acorn FPEmulator
848 early in the bootup.
849
850config FPE_NWFPE_XP
851 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000852 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 help
854 Say Y to include 80-bit support in the kernel floating-point
855 emulator. Otherwise, only 32 and 64-bit support is compiled in.
856 Note that gcc does not generate 80-bit operations by default,
857 so in most cases this option only enlarges the size of the
858 floating point emulator without any good reason.
859
860 You almost surely want to say N here.
861
862config FPE_FASTFPE
863 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000864 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 ---help---
866 Say Y here to include the FAST floating point emulator in the kernel.
867 This is an experimental much faster emulator which now also has full
868 precision for the mantissa. It does not support any exceptions.
869 It is very simple, and approximately 3-6 times faster than NWFPE.
870
871 It should be sufficient for most programs. It may be not suitable
872 for scientific calculations, but you have to check this for yourself.
873 If you do not feel you need a faster FP emulation you should better
874 choose NWFPE.
875
876config VFP
877 bool "VFP-format floating point maths"
878 depends on CPU_V6 || CPU_ARM926T
879 help
880 Say Y to include VFP support code in the kernel. This is needed
881 if your hardware includes a VFP unit.
882
883 Please see <file:Documentation/arm/VFP/release-notes.txt> for
884 release notes and additional status information.
885
886 Say N if your target does not have VFP hardware.
887
888endmenu
889
890menu "Userspace binary formats"
891
892source "fs/Kconfig.binfmt"
893
894config ARTHUR
895 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000896 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 help
898 Say Y here to include the kernel code necessary if you want to run
899 Acorn RISC OS/Arthur binaries under Linux. This code is still very
900 experimental; if this sounds frightening, say N and sleep in peace.
901 You can also say M here to compile this support as a module (which
902 will be called arthur).
903
904endmenu
905
906menu "Power management options"
907
Russell Kingeceab4a2005-11-15 11:31:41 +0000908source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910endmenu
911
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700912source "net/Kconfig"
913
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914menu "Device Drivers"
915
916source "drivers/base/Kconfig"
917
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000918source "drivers/connector/Kconfig"
919
Hyok S. Choif12d0d72006-09-26 17:36:37 +0900920if ALIGNMENT_TRAP || !CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921source "drivers/mtd/Kconfig"
922endif
923
924source "drivers/parport/Kconfig"
925
926source "drivers/pnp/Kconfig"
927
928source "drivers/block/Kconfig"
929
930source "drivers/acorn/block/Kconfig"
931
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100932if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
David Brownellbb011b82005-06-12 23:26:05 +0100933 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100934 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
935 || ARCH_IXP23XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936source "drivers/ide/Kconfig"
937endif
938
939source "drivers/scsi/Kconfig"
940
Martin Michlmayreb370f02006-11-17 00:14:35 +0100941source "drivers/ata/Kconfig"
942
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943source "drivers/md/Kconfig"
944
945source "drivers/message/fusion/Kconfig"
946
947source "drivers/ieee1394/Kconfig"
948
949source "drivers/message/i2o/Kconfig"
950
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700951source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952
953source "drivers/isdn/Kconfig"
954
955# input before char - char/joystick depends on it. As does USB.
956
957source "drivers/input/Kconfig"
958
959source "drivers/char/Kconfig"
960
961source "drivers/i2c/Kconfig"
962
David Brownell8ae12a02006-01-08 13:34:19 -0800963source "drivers/spi/Kconfig"
964
Alessandro Zummo04916c02006-03-10 22:30:01 +0000965source "drivers/w1/Kconfig"
966
Jean Delvaread2f9312005-07-02 18:15:49 +0200967source "drivers/hwmon/Kconfig"
968
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969#source "drivers/l3/Kconfig"
970
971source "drivers/misc/Kconfig"
972
Russell Kinga4e137a2005-08-18 10:06:59 +0100973source "drivers/mfd/Kconfig"
974
Richard Purdiec72a1d62006-03-31 02:31:04 -0800975source "drivers/leds/Kconfig"
976
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977source "drivers/media/Kconfig"
978
979source "drivers/video/Kconfig"
980
981source "sound/Kconfig"
982
Sascha Hauerc2dade52006-12-12 10:32:42 +0100983source "drivers/hid/Kconfig"
984
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985source "drivers/usb/Kconfig"
986
987source "drivers/mmc/Kconfig"
988
Alessandro Zummo12b824f2006-03-27 01:16:35 -0800989source "drivers/rtc/Kconfig"
990
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991endmenu
992
993source "fs/Kconfig"
994
995source "arch/arm/oprofile/Kconfig"
996
997source "arch/arm/Kconfig.debug"
998
999source "security/Kconfig"
1000
1001source "crypto/Kconfig"
1002
1003source "lib/Kconfig"