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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
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -050013 select HAVE_OPROFILE
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050014 select HAVE_KPROBES if (!XIP_KERNEL)
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080015 select HAVE_KRETPROBES if (HAVE_KPROBES)
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 help
17 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000018 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000020 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 Europe. There is an ARM Linux project with a web page at
22 <http://www.arm.linux.org.uk/>.
23
Ralf Baechle75e71532007-02-09 17:08:58 +000024config SYS_SUPPORTS_APM_EMULATION
25 bool
26
David Brownell0a938b92007-03-05 00:30:18 -080027config GENERIC_GPIO
28 bool
29 default n
30
Kevin Hilman746140c2006-09-22 00:16:30 +010031config GENERIC_TIME
32 bool
33 default n
34
Kevin Hilman0567a0c2007-03-13 20:29:24 +010035config GENERIC_CLOCKEVENTS
36 bool
37 default n
38
Catalin Marinasa8655e82008-02-04 17:30:57 +010039config GENERIC_CLOCKEVENTS_BROADCAST
40 bool
41 depends on GENERIC_CLOCKEVENTS
42 default y if SMP && !LOCAL_TIMERS
43
Linus Torvalds1da177e2005-04-16 15:20:36 -070044config MMU
45 bool
46 default y
47
Al Viro5ea81762007-02-11 15:41:31 +000048config NO_IOPORT
49 bool
50 default n
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052config EISA
53 bool
54 ---help---
55 The Extended Industry Standard Architecture (EISA) bus was
56 developed as an open alternative to the IBM MicroChannel bus.
57
58 The EISA bus provided some of the features of the IBM MicroChannel
59 bus while maintaining backward compatibility with cards made for
60 the older ISA bus. The EISA bus saw limited use between 1988 and
61 1995 when it was made obsolete by the PCI bus.
62
63 Say Y here if you are building a kernel for an EISA-based machine.
64
65 Otherwise, say N.
66
67config SBUS
68 bool
69
70config MCA
71 bool
72 help
73 MicroChannel Architecture is found in some IBM PS/2 machines and
74 laptops. It is a bus system similar to PCI or ISA. See
75 <file:Documentation/mca.txt> (and especially the web page given
76 there) before attempting to build an MCA bus kernel.
77
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010078config GENERIC_HARDIRQS
79 bool
80 default y
81
Russell Kingf16fb1e2007-04-28 09:59:37 +010082config STACKTRACE_SUPPORT
83 bool
84 default y
85
86config LOCKDEP_SUPPORT
87 bool
88 default y
89
Russell King7ad1bcb2006-08-27 12:07:02 +010090config TRACE_IRQFLAGS_SUPPORT
91 bool
92 default y
93
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010094config HARDIRQS_SW_RESEND
95 bool
96 default y
97
98config GENERIC_IRQ_PROBE
99 bool
100 default y
101
Nick Piggin95c354f2008-01-30 13:31:20 +0100102config GENERIC_LOCKBREAK
103 bool
104 default y
105 depends on SMP && PREEMPT
106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107config RWSEM_GENERIC_SPINLOCK
108 bool
109 default y
110
111config RWSEM_XCHGADD_ALGORITHM
112 bool
113
David Howellsf0d1b0b2006-12-08 02:37:49 -0800114config ARCH_HAS_ILOG2_U32
115 bool
116 default n
117
118config ARCH_HAS_ILOG2_U64
119 bool
120 default n
121
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800122config GENERIC_HWEIGHT
123 bool
124 default y
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126config GENERIC_CALIBRATE_DELAY
127 bool
128 default y
129
David Howellsb0b933c2008-02-08 04:19:27 -0800130config ARCH_SUPPORTS_AOUT
131 def_bool y
132
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100133config ARCH_MAY_HAVE_PC_FDC
134 bool
135
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800136config ZONE_DMA
137 bool
138 default y
139
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140config GENERIC_ISA_DMA
141 bool
142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143config FIQ
144 bool
145
Al Viro034d2f52005-12-19 16:27:59 -0500146config ARCH_MTD_XIP
147 bool
148
Mathieu Desnoyersc0ffa3a2008-02-02 15:10:32 -0500149if OPROFILE
150
151config OPROFILE_ARMV6
152 def_bool y
153 depends on CPU_V6 && !SMP
154 select OPROFILE_ARM11_CORE
155
156config OPROFILE_MPCORE
157 def_bool y
158 depends on CPU_V6 && SMP
159 select OPROFILE_ARM11_CORE
160
161config OPROFILE_ARM11_CORE
162 bool
163
164endif
165
Hyok S. Choic760fc12006-03-27 15:18:50 +0100166config VECTORS_BASE
167 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900168 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100169 default DRAM_BASE if REMAP_VECTORS_TO_RAM
170 default 0x00000000
171 help
172 The base address of exception vectors.
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174source "init/Kconfig"
175
176menu "System Type"
177
178choice
179 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000180 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100182config ARCH_AAEC2000
183 bool "Agilent AAEC-2000 based"
184 select ARM_AMBA
185 help
186 This enables support for systems based on the Agilent AAEC-2000
187
188config ARCH_INTEGRATOR
189 bool "ARM Ltd. Integrator family"
190 select ARM_AMBA
191 select ICST525
192 help
193 Support for ARM's Integrator platform.
194
195config ARCH_REALVIEW
196 bool "ARM Ltd. RealView family"
197 select ARM_AMBA
198 select ICST307
Catalin Marinas85802af2008-02-04 17:24:54 +0100199 select GENERIC_TIME
Catalin Marinasae30cea2008-02-04 17:26:55 +0100200 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100201 help
202 This enables support for ARM Ltd RealView boards.
203
204config ARCH_VERSATILE
205 bool "ARM Ltd. Versatile family"
206 select ARM_AMBA
207 select ARM_VIC
208 select ICST307
Kevin Hilmanb49c87c2007-03-08 20:25:13 +0100209 select GENERIC_TIME
Kevin Hilman89df1272007-03-08 20:30:38 +0100210 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100211 help
212 This enables support for ARM Ltd Versatile board.
213
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100214config ARCH_AT91
215 bool "Atmel AT91"
David Brownell0a938b92007-03-05 00:30:18 -0800216 select GENERIC_GPIO
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100217 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100218 This enables support for systems based on the Atmel AT91RM9200,
219 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100220
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221config ARCH_CLPS7500
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100222 bool "Cirrus CL-PS7500FE"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +0100224 select ISA
Russell Kinge4169882007-02-26 21:07:30 +0000225 select NO_IOPORT
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100226 select HAVE_IDE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000227 help
228 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
230config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100231 bool "Cirrus Logic CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000232 help
233 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
235config ARCH_CO285
236 bool "Co-EBSA285"
237 select FOOTBRIDGE
238 select FOOTBRIDGE_ADDIN
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100239 select HAVE_IDE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000240 help
241 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
243config ARCH_EBSA110
244 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100245 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000246 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 help
248 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000249 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 Ethernet interface, two PCMCIA sockets, two serial ports and a
251 parallel port.
252
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000253config ARCH_EP93XX
254 bool "EP93xx-based"
255 select ARM_AMBA
256 select ARM_VIC
Herbert Valerio Riedel4e9f9fd2007-11-26 18:41:02 +0100257 select GENERIC_GPIO
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000258 help
259 This enables support for the Cirrus EP93xx series of CPUs.
260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261config ARCH_FOOTBRIDGE
262 bool "FootBridge"
263 select FOOTBRIDGE
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100264 select HAVE_IDE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000265 help
266 Support for systems based on the DC21285 companion chip
267 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100269config ARCH_NETX
270 bool "Hilscher NetX based"
271 select ARM_VIC
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000272 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100273 This enables support for systems based on the Hilscher NetX Soc
274
275config ARCH_H720X
276 bool "Hynix HMS720x-based"
277 select ISA_DMA_API
278 help
279 This enables support for systems based on the Hynix HMS720x
280
281config ARCH_IMX
282 bool "IMX"
Pavel Pisab3e6a502007-05-12 14:31:17 +0100283 select GENERIC_GPIO
Pavel Pisa89bba432007-05-13 17:37:33 +0100284 select GENERIC_TIME
285 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100286 help
287 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
Russell King3b938be2007-05-12 11:25:44 +0100289config ARCH_IOP13XX
290 bool "IOP13xx-based"
291 depends on MMU
292 select PLAT_IOP
293 select PCI
294 select ARCH_SUPPORTS_MSI
295 help
296 Support for Intel's IOP13XX (XScale) family of processors.
297
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100298config ARCH_IOP32X
299 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100300 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100301 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100302 select PCI
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100303 select HAVE_IDE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000304 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100305 Support for Intel's 80219 and IOP32X (XScale) family of
306 processors.
307
308config ARCH_IOP33X
309 bool "IOP33x-based"
310 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100311 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100312 select PCI
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100313 select HAVE_IDE
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100314 help
315 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
Russell King3b938be2007-05-12 11:25:44 +0100317config ARCH_IXP23XX
318 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100319 depends on MMU
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100320 select HAVE_IDE
Russell King3b938be2007-05-12 11:25:44 +0100321 select PCI
Dan Williams285f5fa2006-12-07 02:59:39 +0100322 help
Russell King3b938be2007-05-12 11:25:44 +0100323 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
325config ARCH_IXP2000
326 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100327 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100328 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000329 help
330 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
Russell King3b938be2007-05-12 11:25:44 +0100332config ARCH_IXP4XX
333 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100334 depends on MMU
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100335 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100336 select GENERIC_TIME
337 select GENERIC_CLOCKEVENTS
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100338 select HAVE_IDE
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100339 help
Russell King3b938be2007-05-12 11:25:44 +0100340 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100341
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342config ARCH_L7200
343 bool "LinkUp-L7200"
344 select FIQ
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100345 select HAVE_IDE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 help
347 Say Y here if you intend to run this kernel on a LinkUp Systems
348 L7200 Software Development Board which uses an ARM720T processor.
349 Information on this board can be obtained at:
350
351 <http://www.linkupsys.com/>
352
353 If you have any questions or comments about the Linux kernel port
354 to this board, send e-mail to <sjhill@cotw.com>.
355
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100356config ARCH_KS8695
357 bool "Micrel/Kendin KS8695"
Andrew Victor8a87a992007-05-14 14:30:15 +0100358 select GENERIC_GPIO
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100359 help
360 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
361 System-on-Chip devices.
362
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100363config ARCH_NS9XXX
364 bool "NetSilicon NS9xxx"
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100365 select GENERIC_GPIO
Uwe Kleine-Königcef59752007-09-30 20:35:48 +0100366 select GENERIC_TIME
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100367 select GENERIC_CLOCKEVENTS
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100368 help
369 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
370 System.
371
372 <http://www.digi.com/products/microprocessors/index.jsp>
373
Quinn Jensen52c543f2007-07-09 22:06:53 +0100374config ARCH_MXC
375 bool "Freescale MXC/iMX-based"
376 select ARCH_MTD_XIP
377 help
378 Support for Freescale MXC/iMX-based family of processors
379
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400380config ARCH_ORION
381 bool "Marvell Orion"
382 depends on MMU
Tzachi Perelstein038ee082007-10-23 15:14:42 -0400383 select PCI
Tzachi Perelstein01af72e2007-10-23 15:14:42 -0400384 select GENERIC_GPIO
Tzachi Perelstein51cbff12007-10-23 15:14:42 -0400385 select GENERIC_TIME
386 select GENERIC_CLOCKEVENTS
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400387 help
388 Support for Marvell Orion System on Chip family.
389
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100390config ARCH_PNX4008
391 bool "Philips Nexperia PNX4008 Mobile"
392 help
393 This enables support for Philips PNX4008 mobile platform.
394
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700396 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100397 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500398 select ARCH_MTD_XIP
David Brownell0a938b92007-03-05 00:30:18 -0800399 select GENERIC_GPIO
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100400 select HAVE_IDE
Philipp Zabel1c44f5f2008-02-04 22:28:22 -0800401 select HAVE_GPIO_LIB
Nicolas Pitre45cf5ee2007-02-05 22:37:07 +0100402 select GENERIC_TIME
Eric Miao981d0f32007-07-24 01:22:43 +0100403 select GENERIC_CLOCKEVENTS
Russell Kinga88264c2007-11-12 22:45:16 +0000404 select TICK_ONESHOT
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000405 help
eric miao2c8086a2007-09-11 19:13:17 -0700406 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407
408config ARCH_RPC
409 bool "RiscPC"
410 select ARCH_ACORN
411 select FIQ
412 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100413 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000414 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000415 select NO_IOPORT
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100416 select HAVE_IDE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 help
418 On the Acorn Risc-PC, Linux can support the internal IDE disk and
419 CD-ROM interface, serial and parallel port, and the floppy drive.
420
421config ARCH_SA1100
422 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100423 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100424 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500425 select ARCH_MTD_XIP
David Brownell0a938b92007-03-05 00:30:18 -0800426 select GENERIC_GPIO
Russell Kingd142b6e2007-11-12 21:55:12 +0000427 select GENERIC_TIME
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100428 select HAVE_IDE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000429 help
430 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431
432config ARCH_S3C2410
Ben Dookse4d06e32007-02-16 12:12:31 +0100433 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
David Brownell0a938b92007-03-05 00:30:18 -0800434 select GENERIC_GPIO
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100435 select HAVE_IDE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 help
437 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
438 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000439 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
441config ARCH_SHARK
442 bool "Shark"
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100443 select HAVE_IDE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100444 select ISA
445 select ISA_DMA
446 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000447 help
448 Support for the StrongARM based Digital DNARD machine, also known
449 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
451config ARCH_LH7A40X
452 bool "Sharp LH7A40X"
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100453 select HAVE_IDE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 help
455 Say Y here for systems based on one of the Sharp LH7A40X
456 System on a Chip processors. These CPUs include an ARM922T
457 core with a wide array of integrated devices for
458 hand-held and low-power applications.
459
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100460config ARCH_DAVINCI
461 bool "TI DaVinci"
462 select GENERIC_TIME
463 select GENERIC_CLOCKEVENTS
Vladimir Barinov3d9edf02007-07-10 13:03:43 +0100464 select GENERIC_GPIO
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100465 help
466 Support for TI's DaVinci platform.
467
Russell King3b938be2007-05-12 11:25:44 +0100468config ARCH_OMAP
469 bool "TI OMAP"
470 select GENERIC_GPIO
David Brownell52e31342008-03-03 12:43:23 -0800471 select HAVE_GPIO_LIB
Russell King3b938be2007-05-12 11:25:44 +0100472 select GENERIC_TIME
Kevin Hilman06cad092007-10-18 23:04:43 -0700473 select GENERIC_CLOCKEVENTS
Russell King3b938be2007-05-12 11:25:44 +0100474 help
475 Support for TI's OMAP platform (OMAP1 and OMAP2).
476
Brian Swetland30421022007-11-26 04:11:43 -0800477config ARCH_MSM7X00A
478 bool "Qualcomm MSM7X00A"
479 select GENERIC_TIME
480 select GENERIC_CLOCKEVENTS
481 help
482 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
483 apps processor of the MSM7X00A and depends on a shared memory
484 interface to the ARM9 modem processor which runs the baseband stack
485 and controls some vital subsystems (clock and power control, etc).
486 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
487
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488endchoice
489
490source "arch/arm/mach-clps711x/Kconfig"
491
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000492source "arch/arm/mach-ep93xx/Kconfig"
493
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494source "arch/arm/mach-footbridge/Kconfig"
495
496source "arch/arm/mach-integrator/Kconfig"
497
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100498source "arch/arm/mach-iop32x/Kconfig"
499
500source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Dan Williams285f5fa2006-12-07 02:59:39 +0100502source "arch/arm/mach-iop13xx/Kconfig"
503
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504source "arch/arm/mach-ixp4xx/Kconfig"
505
506source "arch/arm/mach-ixp2000/Kconfig"
507
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100508source "arch/arm/mach-ixp23xx/Kconfig"
509
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510source "arch/arm/mach-pxa/Kconfig"
511
512source "arch/arm/mach-sa1100/Kconfig"
513
Tony Lindgrend48af152005-07-10 19:58:17 +0100514source "arch/arm/plat-omap/Kconfig"
515
516source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
Tony Lindgren1dbae812005-11-10 14:26:51 +0000518source "arch/arm/mach-omap2/Kconfig"
519
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400520source "arch/arm/mach-orion/Kconfig"
521
Ben Dooksa21765a2007-02-11 18:31:01 +0100522source "arch/arm/plat-s3c24xx/Kconfig"
Ben Dooksd58153d2007-07-22 16:07:09 +0100523source "arch/arm/plat-s3c/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100524
525if ARCH_S3C2410
526source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100528source "arch/arm/mach-s3c2412/Kconfig"
529source "arch/arm/mach-s3c2440/Kconfig"
530source "arch/arm/mach-s3c2442/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100531source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100532endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
534source "arch/arm/mach-lh7a40x/Kconfig"
535
536source "arch/arm/mach-imx/Kconfig"
537
538source "arch/arm/mach-h720x/Kconfig"
539
540source "arch/arm/mach-versatile/Kconfig"
541
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100542source "arch/arm/mach-aaec2000/Kconfig"
543
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000544source "arch/arm/mach-realview/Kconfig"
545
Andrew Victor9d041262007-02-05 11:42:07 +0100546source "arch/arm/mach-at91/Kconfig"
SAN People73a59c12006-01-09 17:05:41 +0000547
Quinn Jensen52c543f2007-07-09 22:06:53 +0100548source "arch/arm/plat-mxc/Kconfig"
549
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100550source "arch/arm/mach-netx/Kconfig"
551
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100552source "arch/arm/mach-ns9xxx/Kconfig"
553
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100554source "arch/arm/mach-davinci/Kconfig"
555
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100556source "arch/arm/mach-ks8695/Kconfig"
557
Brian Swetland9e73c842007-11-26 04:12:13 -0800558source "arch/arm/mach-msm/Kconfig"
559
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560# Definitions to make life easier
561config ARCH_ACORN
562 bool
563
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100564config PLAT_IOP
565 bool
566
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567source arch/arm/mm/Kconfig
568
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100569config IWMMXT
570 bool "Enable iWMMXt support"
Robert P. J. Day6340aa62007-02-17 19:05:24 +0100571 depends on CPU_XSCALE || CPU_XSC3
eric miao2c8086a2007-09-11 19:13:17 -0700572 default y if PXA27x || PXA3xx
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100573 help
574 Enable support for iWMMXt context switching at run time if
575 running on a CPU that supports it.
576
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
578config XSCALE_PMU
579 bool
580 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
581 default y
582
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100583if !MMU
584source "arch/arm/Kconfig-nommu"
585endif
586
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587endmenu
588
589source "arch/arm/common/Kconfig"
590
591config FORCE_MAX_ZONEORDER
592 int
593 depends on SA1111
594 default "9"
595
596menu "Bus support"
597
598config ARM_AMBA
599 bool
600
601config ISA
602 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 help
604 Find out whether you have ISA slots on your motherboard. ISA is the
605 name of a bus system, i.e. the way the CPU talks to the other stuff
606 inside your box. Other bus systems are PCI, EISA, MicroChannel
607 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
608 newer boards don't support it. If you have ISA, say Y, otherwise N.
609
Russell King065909b2006-01-04 15:44:16 +0000610# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611config ISA_DMA
612 bool
Russell King065909b2006-01-04 15:44:16 +0000613 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614
Russell King065909b2006-01-04 15:44:16 +0000615# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100616config ISA_DMA_API
617 bool
Al Viro5cae8412005-05-04 05:39:22 +0100618
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619config PCI
Mike Rapoporta0113a92007-11-25 08:55:34 +0100620 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 help
622 Find out whether you have a PCI motherboard. PCI is the name of a
623 bus system, i.e. the way the CPU talks to the other stuff inside
624 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
625 VESA. If you have PCI, say Y, otherwise N.
626
Matthew Wilcox36e23592007-07-10 10:54:40 -0600627config PCI_SYSCALL
628 def_bool PCI
629
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630# Select the host bridge type
631config PCI_HOST_VIA82C505
632 bool
633 depends on PCI && ARCH_SHARK
634 default y
635
Mike Rapoporta0113a92007-11-25 08:55:34 +0100636config PCI_HOST_ITE8152
637 bool
638 depends on PCI && MACH_ARMCORE
639 default y
640 select DMABOUNCE
641
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642source "drivers/pci/Kconfig"
643
644source "drivers/pcmcia/Kconfig"
645
646endmenu
647
648menu "Kernel Features"
649
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100650source "kernel/time/Kconfig"
651
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652config SMP
653 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Catalin Marinas41579f42008-02-04 17:47:04 +0100654 depends on EXPERIMENTAL && REALVIEW_EB_ARM11MP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 help
656 This enables support for systems with more than one CPU. If you have
657 a system with only one CPU, like most personal computers, say N. If
658 you have a system with more than one CPU, say Y.
659
660 If you say N here, the kernel will run on single and multiprocessor
661 machines, but will use only one CPU of a multiprocessor machine. If
662 you say Y here, the kernel will run on many, but not all, single
663 processor machines. On a single processor machine, the kernel will
664 run faster if you say N here.
665
Adrian Bunk03502fa2008-02-03 15:50:21 +0200666 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
668 <http://www.linuxdoc.org/docs.html#howto>.
669
670 If you don't know what to do here, say N.
671
672config NR_CPUS
673 int "Maximum number of CPUs (2-32)"
674 range 2 32
675 depends on SMP
676 default "4"
677
Russell Kinga054a812005-11-02 22:24:33 +0000678config HOTPLUG_CPU
679 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
680 depends on SMP && HOTPLUG && EXPERIMENTAL
681 help
682 Say Y here to experiment with turning CPUs off and on. CPUs
683 can be controlled through /sys/devices/system/cpu.
684
Russell King37ee16a2005-11-08 19:08:05 +0000685config LOCAL_TIMERS
686 bool "Use local timer interrupts"
Catalin Marinas41579f42008-02-04 17:47:04 +0100687 depends on SMP && REALVIEW_EB_ARM11MP
Russell King37ee16a2005-11-08 19:08:05 +0000688 default y
689 help
690 Enable support for local timers on SMP platforms, rather then the
691 legacy IPI broadcast method. Local timers allows the system
692 accounting to be spread across the timer interval, preventing a
693 "thundering herd" at every timer tick.
694
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695config PREEMPT
696 bool "Preemptible Kernel (EXPERIMENTAL)"
697 depends on EXPERIMENTAL
698 help
699 This option reduces the latency of the kernel when reacting to
700 real-time or interactive events by allowing a low priority process to
701 be preempted even if it is in kernel mode executing a system call.
702 This allows applications to run more reliably even when the system is
703 under load.
704
705 Say Y here if you are building a kernel for a desktop, embedded
706 or real-time system. Say N if you are unsure.
707
Russell King8749af62005-06-25 19:39:45 +0100708config NO_IDLE_HZ
709 bool "Dynamic tick timer"
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100710 depends on !GENERIC_CLOCKEVENTS
Russell King8749af62005-06-25 19:39:45 +0100711 help
712 Select this option if you want to disable continuous timer ticks
713 and have them programmed to occur as required. This option saves
714 power as the system can remain in idle state for longer.
715
716 By default dynamic tick is disabled during the boot, and can be
717 manually enabled with:
718
719 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
720
721 Alternatively, if you want dynamic tick automatically enabled
722 during boot, pass "dyntick=enable" via the kernel command string.
723
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100724 Please note that dynamic tick may affect the accuracy of
725 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100726 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
727 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100728
Russell Kingf8065812006-03-02 22:41:59 +0000729config HZ
730 int
731 default 128 if ARCH_L7200
732 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000733 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +0100734 default AT91_TIMER_HZ if ARCH_AT91
Russell Kingf8065812006-03-02 22:41:59 +0000735 default 100
736
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000737config AEABI
738 bool "Use the ARM EABI to compile the kernel"
739 help
740 This option allows for the kernel to be compiled using the latest
741 ARM ABI (aka EABI). This is only useful if you are using a user
742 space environment that is also compiled with EABI.
743
744 Since there are major incompatibilities between the legacy ABI and
745 EABI, especially with regard to structure member alignment, this
746 option also changes the kernel syscall calling convention to
747 disambiguate both ABIs and allow for backward compatibility support
748 (selected with CONFIG_OABI_COMPAT).
749
750 To use this you need GCC version 4.0.0 or later.
751
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000752config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000753 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000754 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000755 default y
756 help
757 This option preserves the old syscall interface along with the
758 new (ARM EABI) one. It also provides a compatibility layer to
759 intercept syscalls that have structure arguments which layout
760 in memory differs between the legacy ABI and the new ARM EABI
761 (only for non "thumb" binaries). This option adds a tiny
762 overhead to all syscalls and produces a slightly larger kernel.
763 If you know you'll be using only pure EABI user space then you
764 can say N here. If this option is not selected and you attempt
765 to execute a legacy ABI binary then the result will be
766 UNPREDICTABLE (in fact it can be predicted that it won't work
767 at all). If in doubt say Y.
768
Dave Hansen3f22ab22005-06-23 00:07:43 -0700769config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100771 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 help
773 Say Y to support efficient handling of discontiguous physical memory,
774 for architectures which are either NUMA (Non-Uniform Memory Access)
775 or have huge holes in the physical address space for other reasons.
776 See <file:Documentation/vm/numa> for more.
777
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700778config NODES_SHIFT
779 int
780 default "4" if ARCH_LH7A40X
781 default "2"
782 depends on NEED_MULTIPLE_NODES
783
Dave Hansen3f22ab22005-06-23 00:07:43 -0700784source "mm/Kconfig"
785
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786config LEDS
787 bool "Timer and CPU usage LEDs"
788 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
789 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
790 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
791 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000792 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100793 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
Ronen Shitrit817eb212007-10-17 14:51:34 -0400794 ARCH_KS8695 || MACH_RD88F5182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795 help
796 If you say Y here, the LEDs on your machine will be used
797 to provide useful information about your current system status.
798
799 If you are compiling a kernel for a NetWinder or EBSA-285, you will
800 be able to select which LEDs are active using the options below. If
801 you are compiling a kernel for the EBSA-110 or the LART however, the
802 red LED will simply flash regularly to indicate that the system is
803 still functional. It is safe to say Y here if you have a CATS
804 system, but the driver will do nothing.
805
806config LEDS_TIMER
807 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -0700808 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
809 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100811 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 default y if ARCH_EBSA110
813 help
814 If you say Y here, one of the system LEDs (the green one on the
815 NetWinder, the amber one on the EBSA285, or the red one on the LART)
816 will flash regularly to indicate that the system is still
817 operational. This is mainly useful to kernel hackers who are
818 debugging unstable kernels.
819
820 The LART uses the same LED for both Timer LED and CPU usage LED
821 functions. You may choose to use both, but the Timer LED function
822 will overrule the CPU usage LED.
823
824config LEDS_CPU
825 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -0700826 !ARCH_OMAP) \
827 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
828 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829 depends on LEDS
830 help
831 If you say Y here, the red LED will be used to give a good real
832 time indication of CPU usage, by lighting whenever the idle task
833 is not currently executing.
834
835 The LART uses the same LED for both Timer LED and CPU usage LED
836 functions. You may choose to use both, but the Timer LED function
837 will overrule the CPU usage LED.
838
839config ALIGNMENT_TRAP
840 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +0900841 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842 default y if !ARCH_EBSA110
843 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +0200844 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
846 address divisible by 4. On 32-bit ARM processors, these non-aligned
847 fetch/store instructions will be emulated in software if you say
848 here, which has a severe performance impact. This is necessary for
849 correct operation of some network protocols. With an IP-only
850 configuration it is safe to say N, otherwise say Y.
851
852endmenu
853
854menu "Boot options"
855
856# Compressed boot loader in ROM. Yes, we really want to ask about
857# TEXT and BSS so we preserve their values in the config files.
858config ZBOOT_ROM_TEXT
859 hex "Compressed ROM boot loader base address"
860 default "0"
861 help
862 The physical address at which the ROM-able zImage is to be
863 placed in the target. Platforms which normally make use of
864 ROM-able zImage formats normally set this to a suitable
865 value in their defconfig file.
866
867 If ZBOOT_ROM is not enabled, this has no effect.
868
869config ZBOOT_ROM_BSS
870 hex "Compressed ROM boot loader BSS address"
871 default "0"
872 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +0100873 The base address of an area of read/write memory in the target
874 for the ROM-able zImage which must be available while the
875 decompressor is running. It must be large enough to hold the
876 entire decompressed kernel plus an additional 128 KiB.
877 Platforms which normally make use of ROM-able zImage formats
878 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879
880 If ZBOOT_ROM is not enabled, this has no effect.
881
882config ZBOOT_ROM
883 bool "Compressed boot loader in ROM/flash"
884 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
885 help
886 Say Y here if you intend to execute your compressed kernel image
887 (zImage) directly from ROM or flash. If unsure, say N.
888
889config CMDLINE
890 string "Default kernel command string"
891 default ""
892 help
893 On some architectures (EBSA110 and CATS), there is currently no way
894 for the boot loader to pass arguments to the kernel. For these
895 architectures, you should supply some command-line options at build
896 time by entering them here. As a minimum, you should specify the
897 memory size and the root device (e.g., mem=64M root=/dev/nfs).
898
899config XIP_KERNEL
900 bool "Kernel Execute-In-Place from ROM"
901 depends on !ZBOOT_ROM
902 help
903 Execute-In-Place allows the kernel to run from non-volatile storage
904 directly addressable by the CPU, such as NOR flash. This saves RAM
905 space since the text section of the kernel is not loaded from flash
906 to RAM. Read-write sections, such as the data section and stack,
907 are still copied to RAM. The XIP kernel is not compressed since
908 it has to run directly from flash, so it will take more space to
909 store it. The flash address used to link the kernel object files,
910 and for storing it, is configuration dependent. Therefore, if you
911 say Y here, you must know the proper physical address where to
912 store the kernel image depending on your own flash memory usage.
913
914 Also note that the make target becomes "make xipImage" rather than
915 "make zImage" or "make Image". The final kernel binary to put in
916 ROM memory will be arch/arm/boot/xipImage.
917
918 If unsure, say N.
919
920config XIP_PHYS_ADDR
921 hex "XIP Kernel Physical Location"
922 depends on XIP_KERNEL
923 default "0x00080000"
924 help
925 This is the physical address in your flash memory the kernel will
926 be linked for and stored to. This address is dependent on your
927 own flash usage.
928
Richard Purdiec587e4a2007-02-06 21:29:00 +0100929config KEXEC
930 bool "Kexec system call (EXPERIMENTAL)"
931 depends on EXPERIMENTAL
932 help
933 kexec is a system call that implements the ability to shutdown your
934 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +0200935 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +0100936 you can start any kernel with it, not just Linux.
937
938 It is an ongoing process to be certain the hardware in a machine
939 is properly shutdown, so do not be surprised if this code does not
940 initially work for you. It may help to enable device hotplugging
941 support.
942
Richard Purdie4cd9d6f2008-01-02 00:56:46 +0100943config ATAGS_PROC
944 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +0100945 depends on KEXEC
946 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +0100947 help
948 Should the atags used to boot the kernel be exported in an "atags"
949 file in procfs. Useful with kexec.
950
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951endmenu
952
Russell King9e2697f2007-12-14 13:30:14 +0000953if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954
955menu "CPU Frequency scaling"
956
957source "drivers/cpufreq/Kconfig"
958
959config CPU_FREQ_SA1100
960 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100961 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 -0700962 default y
963
964config CPU_FREQ_SA1110
965 bool
966 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
967 default y
968
969config CPU_FREQ_INTEGRATOR
970 tristate "CPUfreq driver for ARM Integrator CPUs"
971 depends on ARCH_INTEGRATOR && CPU_FREQ
972 default y
973 help
974 This enables the CPUfreq driver for ARM Integrator CPUs.
975
976 For details, take a look at <file:Documentation/cpu-freq>.
977
978 If in doubt, say Y.
979
Pavel Pisa3c8cd0c2006-12-06 17:25:04 +0100980config CPU_FREQ_IMX
981 tristate "CPUfreq driver for i.MX CPUs"
982 depends on ARCH_IMX && CPU_FREQ
983 default n
984 help
985 This enables the CPUfreq driver for i.MX CPUs.
986
987 If in doubt, say N.
988
Russell King9e2697f2007-12-14 13:30:14 +0000989config CPU_FREQ_PXA
990 bool
991 depends on CPU_FREQ && ARCH_PXA && PXA25x
992 default y
993 select CPU_FREQ_DEFAULT_GOV_USERSPACE
994
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995endmenu
996
997endif
998
999menu "Floating point emulation"
1000
1001comment "At least one emulation must be selected"
1002
1003config FPE_NWFPE
1004 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001005 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 ---help---
1007 Say Y to include the NWFPE floating point emulator in the kernel.
1008 This is necessary to run most binaries. Linux does not currently
1009 support floating point hardware so you need to say Y here even if
1010 your machine has an FPA or floating point co-processor podule.
1011
1012 You may say N here if you are going to load the Acorn FPEmulator
1013 early in the bootup.
1014
1015config FPE_NWFPE_XP
1016 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001017 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 help
1019 Say Y to include 80-bit support in the kernel floating-point
1020 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1021 Note that gcc does not generate 80-bit operations by default,
1022 so in most cases this option only enlarges the size of the
1023 floating point emulator without any good reason.
1024
1025 You almost surely want to say N here.
1026
1027config FPE_FASTFPE
1028 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001029 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001030 ---help---
1031 Say Y here to include the FAST floating point emulator in the kernel.
1032 This is an experimental much faster emulator which now also has full
1033 precision for the mantissa. It does not support any exceptions.
1034 It is very simple, and approximately 3-6 times faster than NWFPE.
1035
1036 It should be sufficient for most programs. It may be not suitable
1037 for scientific calculations, but you have to check this for yourself.
1038 If you do not feel you need a faster FP emulation you should better
1039 choose NWFPE.
1040
1041config VFP
1042 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001043 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 help
1045 Say Y to include VFP support code in the kernel. This is needed
1046 if your hardware includes a VFP unit.
1047
1048 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1049 release notes and additional status information.
1050
1051 Say N if your target does not have VFP hardware.
1052
Catalin Marinas25ebee02007-09-25 15:22:24 +01001053config VFPv3
1054 bool
1055 depends on VFP
1056 default y if CPU_V7
1057
Catalin Marinasb5872db2008-01-10 19:16:17 +01001058config NEON
1059 bool "Advanced SIMD (NEON) Extension support"
1060 depends on VFPv3 && CPU_V7
1061 help
1062 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1063 Extension.
1064
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065endmenu
1066
1067menu "Userspace binary formats"
1068
1069source "fs/Kconfig.binfmt"
1070
1071config ARTHUR
1072 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001073 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074 help
1075 Say Y here to include the kernel code necessary if you want to run
1076 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1077 experimental; if this sounds frightening, say N and sleep in peace.
1078 You can also say M here to compile this support as a module (which
1079 will be called arthur).
1080
1081endmenu
1082
1083menu "Power management options"
1084
Russell Kingeceab4a2005-11-15 11:31:41 +00001085source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086
Johannes Bergf4cb5702007-12-08 02:14:00 +01001087config ARCH_SUSPEND_POSSIBLE
1088 def_bool y
1089
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090endmenu
1091
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001092source "net/Kconfig"
1093
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094menu "Device Drivers"
1095
1096source "drivers/base/Kconfig"
1097
Pavel Machekc35bf4a2005-11-12 20:25:25 +00001098source "drivers/connector/Kconfig"
1099
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001100if ALIGNMENT_TRAP || !CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101source "drivers/mtd/Kconfig"
1102endif
1103
1104source "drivers/parport/Kconfig"
1105
1106source "drivers/pnp/Kconfig"
1107
1108source "drivers/block/Kconfig"
1109
Russell King58273e52007-10-12 22:24:09 +01001110# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1111
1112source "drivers/misc/Kconfig"
1113
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114source "drivers/ide/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115
1116source "drivers/scsi/Kconfig"
1117
Martin Michlmayreb370f02006-11-17 00:14:35 +01001118source "drivers/ata/Kconfig"
1119
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120source "drivers/md/Kconfig"
1121
1122source "drivers/message/fusion/Kconfig"
1123
1124source "drivers/ieee1394/Kconfig"
1125
1126source "drivers/message/i2o/Kconfig"
1127
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001128source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129
1130source "drivers/isdn/Kconfig"
1131
1132# input before char - char/joystick depends on it. As does USB.
1133
1134source "drivers/input/Kconfig"
1135
1136source "drivers/char/Kconfig"
1137
1138source "drivers/i2c/Kconfig"
1139
David Brownell8ae12a02006-01-08 13:34:19 -08001140source "drivers/spi/Kconfig"
1141
David Brownella9c5fff2008-02-04 22:28:17 -08001142source "drivers/gpio/Kconfig"
1143
Alessandro Zummo04916c02006-03-10 22:30:01 +00001144source "drivers/w1/Kconfig"
1145
Russell King58273e52007-10-12 22:24:09 +01001146source "drivers/power/Kconfig"
1147
Jean Delvaread2f9312005-07-02 18:15:49 +02001148source "drivers/hwmon/Kconfig"
1149
Russell King70dfa3f2007-11-07 14:13:35 +00001150source "drivers/watchdog/Kconfig"
1151
Russell King58273e52007-10-12 22:24:09 +01001152source "drivers/ssb/Kconfig"
1153
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154#source "drivers/l3/Kconfig"
1155
Russell Kinga4e137a2005-08-18 10:06:59 +01001156source "drivers/mfd/Kconfig"
1157
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158source "drivers/media/Kconfig"
1159
1160source "drivers/video/Kconfig"
1161
1162source "sound/Kconfig"
1163
Sascha Hauerc2dade52006-12-12 10:32:42 +01001164source "drivers/hid/Kconfig"
1165
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166source "drivers/usb/Kconfig"
1167
1168source "drivers/mmc/Kconfig"
1169
Russell King58273e52007-10-12 22:24:09 +01001170source "drivers/leds/Kconfig"
1171
Alessandro Zummo12b824f2006-03-27 01:16:35 -08001172source "drivers/rtc/Kconfig"
1173
Dan Williams58168152007-01-02 11:10:43 -07001174source "drivers/dma/Kconfig"
1175
Dan Williamsabf07b12008-01-18 23:26:10 +01001176source "drivers/dca/Kconfig"
1177
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178endmenu
1179
1180source "fs/Kconfig"
1181
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182source "arch/arm/Kconfig.debug"
1183
1184source "security/Kconfig"
1185
1186source "crypto/Kconfig"
1187
1188source "lib/Kconfig"