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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
Adrian Bunk2064c942008-04-28 23:44:43 +020011 select HAVE_IDE
Alessandro Zummo12b824f2006-03-27 01:16:35 -080012 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +000013 select SYS_SUPPORTS_APM_EMULATION
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -050014 select HAVE_OPROFILE
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050015 select HAVE_KPROBES if (!XIP_KERNEL)
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080016 select HAVE_KRETPROBES if (HAVE_KPROBES)
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 help
18 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000019 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000021 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 Europe. There is an ARM Linux project with a web page at
23 <http://www.arm.linux.org.uk/>.
24
Ralf Baechle75e71532007-02-09 17:08:58 +000025config SYS_SUPPORTS_APM_EMULATION
26 bool
27
David Brownell0a938b92007-03-05 00:30:18 -080028config GENERIC_GPIO
29 bool
30 default n
31
Kevin Hilman746140c2006-09-22 00:16:30 +010032config GENERIC_TIME
33 bool
34 default n
35
Kevin Hilman0567a0c2007-03-13 20:29:24 +010036config GENERIC_CLOCKEVENTS
37 bool
38 default n
39
Catalin Marinasa8655e82008-02-04 17:30:57 +010040config GENERIC_CLOCKEVENTS_BROADCAST
41 bool
42 depends on GENERIC_CLOCKEVENTS
43 default y if SMP && !LOCAL_TIMERS
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045config MMU
46 bool
47 default y
48
Al Viro5ea81762007-02-11 15:41:31 +000049config NO_IOPORT
50 bool
51 default n
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053config EISA
54 bool
55 ---help---
56 The Extended Industry Standard Architecture (EISA) bus was
57 developed as an open alternative to the IBM MicroChannel bus.
58
59 The EISA bus provided some of the features of the IBM MicroChannel
60 bus while maintaining backward compatibility with cards made for
61 the older ISA bus. The EISA bus saw limited use between 1988 and
62 1995 when it was made obsolete by the PCI bus.
63
64 Say Y here if you are building a kernel for an EISA-based machine.
65
66 Otherwise, say N.
67
68config SBUS
69 bool
70
71config MCA
72 bool
73 help
74 MicroChannel Architecture is found in some IBM PS/2 machines and
75 laptops. It is a bus system similar to PCI or ISA. See
76 <file:Documentation/mca.txt> (and especially the web page given
77 there) before attempting to build an MCA bus kernel.
78
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010079config GENERIC_HARDIRQS
80 bool
81 default y
82
Russell Kingf16fb1e2007-04-28 09:59:37 +010083config STACKTRACE_SUPPORT
84 bool
85 default y
86
87config LOCKDEP_SUPPORT
88 bool
89 default y
90
Russell King7ad1bcb2006-08-27 12:07:02 +010091config TRACE_IRQFLAGS_SUPPORT
92 bool
93 default y
94
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010095config HARDIRQS_SW_RESEND
96 bool
97 default y
98
99config GENERIC_IRQ_PROBE
100 bool
101 default y
102
Nick Piggin95c354f2008-01-30 13:31:20 +0100103config GENERIC_LOCKBREAK
104 bool
105 default y
106 depends on SMP && PREEMPT
107
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108config RWSEM_GENERIC_SPINLOCK
109 bool
110 default y
111
112config RWSEM_XCHGADD_ALGORITHM
113 bool
114
David Howellsf0d1b0b2006-12-08 02:37:49 -0800115config ARCH_HAS_ILOG2_U32
116 bool
117 default n
118
119config ARCH_HAS_ILOG2_U64
120 bool
121 default n
122
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800123config GENERIC_HWEIGHT
124 bool
125 default y
126
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127config GENERIC_CALIBRATE_DELAY
128 bool
129 default y
130
David Howellsb0b933c2008-02-08 04:19:27 -0800131config ARCH_SUPPORTS_AOUT
132 def_bool y
133
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100134config ARCH_MAY_HAVE_PC_FDC
135 bool
136
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800137config ZONE_DMA
138 bool
139 default y
140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141config GENERIC_ISA_DMA
142 bool
143
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144config FIQ
145 bool
146
Al Viro034d2f52005-12-19 16:27:59 -0500147config ARCH_MTD_XIP
148 bool
149
Mathieu Desnoyersc0ffa3a2008-02-02 15:10:32 -0500150if OPROFILE
151
152config OPROFILE_ARMV6
153 def_bool y
154 depends on CPU_V6 && !SMP
155 select OPROFILE_ARM11_CORE
156
157config OPROFILE_MPCORE
158 def_bool y
159 depends on CPU_V6 && SMP
160 select OPROFILE_ARM11_CORE
161
162config OPROFILE_ARM11_CORE
163 bool
164
165endif
166
Hyok S. Choic760fc12006-03-27 15:18:50 +0100167config VECTORS_BASE
168 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900169 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100170 default DRAM_BASE if REMAP_VECTORS_TO_RAM
171 default 0x00000000
172 help
173 The base address of exception vectors.
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175source "init/Kconfig"
176
177menu "System Type"
178
179choice
180 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000181 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100183config ARCH_AAEC2000
184 bool "Agilent AAEC-2000 based"
185 select ARM_AMBA
186 help
187 This enables support for systems based on the Agilent AAEC-2000
188
189config ARCH_INTEGRATOR
190 bool "ARM Ltd. Integrator family"
191 select ARM_AMBA
192 select ICST525
193 help
194 Support for ARM's Integrator platform.
195
196config ARCH_REALVIEW
197 bool "ARM Ltd. RealView family"
198 select ARM_AMBA
199 select ICST307
Catalin Marinas85802af2008-02-04 17:24:54 +0100200 select GENERIC_TIME
Catalin Marinasae30cea2008-02-04 17:26:55 +0100201 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100202 help
203 This enables support for ARM Ltd RealView boards.
204
205config ARCH_VERSATILE
206 bool "ARM Ltd. Versatile family"
207 select ARM_AMBA
208 select ARM_VIC
209 select ICST307
Kevin Hilmanb49c87c2007-03-08 20:25:13 +0100210 select GENERIC_TIME
Kevin Hilman89df1272007-03-08 20:30:38 +0100211 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100212 help
213 This enables support for ARM Ltd Versatile board.
214
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100215config ARCH_AT91
216 bool "Atmel AT91"
David Brownell0a938b92007-03-05 00:30:18 -0800217 select GENERIC_GPIO
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100218 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100219 This enables support for systems based on the Atmel AT91RM9200,
220 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100221
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222config ARCH_CLPS7500
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100223 bool "Cirrus CL-PS7500FE"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +0100225 select ISA
Russell Kinge4169882007-02-26 21:07:30 +0000226 select NO_IOPORT
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
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000239 help
240 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
242config ARCH_EBSA110
243 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100244 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000245 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 help
247 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000248 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 Ethernet interface, two PCMCIA sockets, two serial ports and a
250 parallel port.
251
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000252config ARCH_EP93XX
253 bool "EP93xx-based"
254 select ARM_AMBA
255 select ARM_VIC
Herbert Valerio Riedel4e9f9fd2007-11-26 18:41:02 +0100256 select GENERIC_GPIO
Ryan Mallonb6850042008-04-16 02:56:35 +0100257 select HAVE_GPIO_LIB
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
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000264 help
265 Support for systems based on the DC21285 companion chip
266 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100268config ARCH_NETX
269 bool "Hilscher NetX based"
270 select ARM_VIC
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000271 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100272 This enables support for systems based on the Hilscher NetX Soc
273
274config ARCH_H720X
275 bool "Hynix HMS720x-based"
276 select ISA_DMA_API
277 help
278 This enables support for systems based on the Hynix HMS720x
279
280config ARCH_IMX
281 bool "IMX"
Pavel Pisab3e6a502007-05-12 14:31:17 +0100282 select GENERIC_GPIO
Pavel Pisa89bba432007-05-13 17:37:33 +0100283 select GENERIC_TIME
284 select GENERIC_CLOCKEVENTS
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100285 help
286 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
Russell King3b938be2007-05-12 11:25:44 +0100288config ARCH_IOP13XX
289 bool "IOP13xx-based"
290 depends on MMU
291 select PLAT_IOP
292 select PCI
293 select ARCH_SUPPORTS_MSI
294 help
295 Support for Intel's IOP13XX (XScale) family of processors.
296
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100297config ARCH_IOP32X
298 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100299 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100300 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100301 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000302 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100303 Support for Intel's 80219 and IOP32X (XScale) family of
304 processors.
305
306config ARCH_IOP33X
307 bool "IOP33x-based"
308 depends on MMU
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100309 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100310 select PCI
311 help
312 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313
Russell King3b938be2007-05-12 11:25:44 +0100314config ARCH_IXP23XX
315 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100316 depends on MMU
Russell King3b938be2007-05-12 11:25:44 +0100317 select PCI
Dan Williams285f5fa2006-12-07 02:59:39 +0100318 help
Russell King3b938be2007-05-12 11:25:44 +0100319 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
321config ARCH_IXP2000
322 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100323 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100324 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000325 help
326 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327
Russell King3b938be2007-05-12 11:25:44 +0100328config ARCH_IXP4XX
329 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100330 depends on MMU
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100331 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100332 select GENERIC_TIME
333 select GENERIC_CLOCKEVENTS
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100334 help
Russell King3b938be2007-05-12 11:25:44 +0100335 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100336
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337config ARCH_L7200
338 bool "LinkUp-L7200"
339 select FIQ
340 help
341 Say Y here if you intend to run this kernel on a LinkUp Systems
342 L7200 Software Development Board which uses an ARM720T processor.
343 Information on this board can be obtained at:
344
345 <http://www.linkupsys.com/>
346
347 If you have any questions or comments about the Linux kernel port
348 to this board, send e-mail to <sjhill@cotw.com>.
349
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100350config ARCH_KS8695
351 bool "Micrel/Kendin KS8695"
Andrew Victor8a87a992007-05-14 14:30:15 +0100352 select GENERIC_GPIO
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100353 help
354 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
355 System-on-Chip devices.
356
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100357config ARCH_NS9XXX
358 bool "NetSilicon NS9xxx"
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100359 select GENERIC_GPIO
Uwe Kleine-Königcef59752007-09-30 20:35:48 +0100360 select GENERIC_TIME
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100361 select GENERIC_CLOCKEVENTS
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100362 help
363 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
364 System.
365
366 <http://www.digi.com/products/microprocessors/index.jsp>
367
Quinn Jensen52c543f2007-07-09 22:06:53 +0100368config ARCH_MXC
369 bool "Freescale MXC/iMX-based"
370 select ARCH_MTD_XIP
371 help
372 Support for Freescale MXC/iMX-based family of processors
373
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400374config ARCH_ORION5X
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400375 bool "Marvell Orion"
376 depends on MMU
Tzachi Perelstein038ee082007-10-23 15:14:42 -0400377 select PCI
Tzachi Perelstein01af72e2007-10-23 15:14:42 -0400378 select GENERIC_GPIO
Tzachi Perelstein51cbff12007-10-23 15:14:42 -0400379 select GENERIC_TIME
380 select GENERIC_CLOCKEVENTS
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400381 select PLAT_ORION
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400382 help
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400383 Support for the following Marvell Orion 5x series SoCs:
384 Orion-1 (5181), Orion-NAS (5182), Orion-2 (5281.)
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400385
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100386config ARCH_PNX4008
387 bool "Philips Nexperia PNX4008 Mobile"
388 help
389 This enables support for Philips PNX4008 mobile platform.
390
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700392 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100393 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500394 select ARCH_MTD_XIP
David Brownell0a938b92007-03-05 00:30:18 -0800395 select GENERIC_GPIO
Philipp Zabel1c44f5f2008-02-04 22:28:22 -0800396 select HAVE_GPIO_LIB
Nicolas Pitre45cf5ee2007-02-05 22:37:07 +0100397 select GENERIC_TIME
Eric Miao981d0f32007-07-24 01:22:43 +0100398 select GENERIC_CLOCKEVENTS
Russell Kinga88264c2007-11-12 22:45:16 +0000399 select TICK_ONESHOT
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000400 help
eric miao2c8086a2007-09-11 19:13:17 -0700401 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
403config ARCH_RPC
404 bool "RiscPC"
405 select ARCH_ACORN
406 select FIQ
407 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100408 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100409 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000410 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000411 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 help
413 On the Acorn Risc-PC, Linux can support the internal IDE disk and
414 CD-ROM interface, serial and parallel port, and the floppy drive.
415
416config ARCH_SA1100
417 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100418 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100419 select ARCH_DISCONTIGMEM_ENABLE
Russell King05944d72006-11-30 20:43:51 +0000420 select ARCH_SPARSEMEM_ENABLE
421 select ARCH_SELECT_MEMORY_MODEL
Al Viro034d2f52005-12-19 16:27:59 -0500422 select ARCH_MTD_XIP
David Brownell0a938b92007-03-05 00:30:18 -0800423 select GENERIC_GPIO
Russell Kingd142b6e2007-11-12 21:55:12 +0000424 select GENERIC_TIME
Russell King3e238be2008-04-14 23:03:10 +0100425 select GENERIC_CLOCKEVENTS
426 select TICK_ONESHOT
Dmitry Baryshkov45528e32008-04-10 13:31:47 +0100427 select HAVE_GPIO_LIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000428 help
429 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
431config ARCH_S3C2410
Ben Dookse4d06e32007-02-16 12:12:31 +0100432 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
David Brownell0a938b92007-03-05 00:30:18 -0800433 select GENERIC_GPIO
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 help
435 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
436 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000437 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438
439config ARCH_SHARK
440 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100441 select ISA
442 select ISA_DMA
443 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000444 help
445 Support for the StrongARM based Digital DNARD machine, also known
446 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
448config ARCH_LH7A40X
449 bool "Sharp LH7A40X"
450 help
451 Say Y here for systems based on one of the Sharp LH7A40X
452 System on a Chip processors. These CPUs include an ARM922T
453 core with a wide array of integrated devices for
454 hand-held and low-power applications.
455
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100456config ARCH_DAVINCI
457 bool "TI DaVinci"
458 select GENERIC_TIME
459 select GENERIC_CLOCKEVENTS
Vladimir Barinov3d9edf02007-07-10 13:03:43 +0100460 select GENERIC_GPIO
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100461 help
462 Support for TI's DaVinci platform.
463
Russell King3b938be2007-05-12 11:25:44 +0100464config ARCH_OMAP
465 bool "TI OMAP"
466 select GENERIC_GPIO
David Brownell52e31342008-03-03 12:43:23 -0800467 select HAVE_GPIO_LIB
Russell King3b938be2007-05-12 11:25:44 +0100468 select GENERIC_TIME
Kevin Hilman06cad092007-10-18 23:04:43 -0700469 select GENERIC_CLOCKEVENTS
Russell King3b938be2007-05-12 11:25:44 +0100470 help
471 Support for TI's OMAP platform (OMAP1 and OMAP2).
472
Brian Swetland30421022007-11-26 04:11:43 -0800473config ARCH_MSM7X00A
474 bool "Qualcomm MSM7X00A"
475 select GENERIC_TIME
476 select GENERIC_CLOCKEVENTS
477 help
478 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
479 apps processor of the MSM7X00A and depends on a shared memory
480 interface to the ARM9 modem processor which runs the baseband stack
481 and controls some vital subsystems (clock and power control, etc).
482 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
483
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484endchoice
485
486source "arch/arm/mach-clps711x/Kconfig"
487
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000488source "arch/arm/mach-ep93xx/Kconfig"
489
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490source "arch/arm/mach-footbridge/Kconfig"
491
492source "arch/arm/mach-integrator/Kconfig"
493
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100494source "arch/arm/mach-iop32x/Kconfig"
495
496source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497
Dan Williams285f5fa2006-12-07 02:59:39 +0100498source "arch/arm/mach-iop13xx/Kconfig"
499
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500source "arch/arm/mach-ixp4xx/Kconfig"
501
502source "arch/arm/mach-ixp2000/Kconfig"
503
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100504source "arch/arm/mach-ixp23xx/Kconfig"
505
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506source "arch/arm/mach-pxa/Kconfig"
507
508source "arch/arm/mach-sa1100/Kconfig"
509
Tony Lindgrend48af152005-07-10 19:58:17 +0100510source "arch/arm/plat-omap/Kconfig"
511
512source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513
Tony Lindgren1dbae812005-11-10 14:26:51 +0000514source "arch/arm/mach-omap2/Kconfig"
515
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400516source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400517
Ben Dooksa21765a2007-02-11 18:31:01 +0100518source "arch/arm/plat-s3c24xx/Kconfig"
Ben Dooksd58153d2007-07-22 16:07:09 +0100519source "arch/arm/plat-s3c/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100520
521if ARCH_S3C2410
522source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100524source "arch/arm/mach-s3c2412/Kconfig"
525source "arch/arm/mach-s3c2440/Kconfig"
526source "arch/arm/mach-s3c2442/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100527source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100528endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529
530source "arch/arm/mach-lh7a40x/Kconfig"
531
532source "arch/arm/mach-imx/Kconfig"
533
534source "arch/arm/mach-h720x/Kconfig"
535
536source "arch/arm/mach-versatile/Kconfig"
537
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100538source "arch/arm/mach-aaec2000/Kconfig"
539
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000540source "arch/arm/mach-realview/Kconfig"
541
Andrew Victor9d041262007-02-05 11:42:07 +0100542source "arch/arm/mach-at91/Kconfig"
SAN People73a59c12006-01-09 17:05:41 +0000543
Quinn Jensen52c543f2007-07-09 22:06:53 +0100544source "arch/arm/plat-mxc/Kconfig"
545
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100546source "arch/arm/mach-netx/Kconfig"
547
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100548source "arch/arm/mach-ns9xxx/Kconfig"
549
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100550source "arch/arm/mach-davinci/Kconfig"
551
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100552source "arch/arm/mach-ks8695/Kconfig"
553
Brian Swetland9e73c842007-11-26 04:12:13 -0800554source "arch/arm/mach-msm/Kconfig"
555
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556# Definitions to make life easier
557config ARCH_ACORN
558 bool
559
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100560config PLAT_IOP
561 bool
562
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400563config PLAT_ORION
564 bool
565
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566source arch/arm/mm/Kconfig
567
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100568config IWMMXT
569 bool "Enable iWMMXt support"
Robert P. J. Day6340aa62007-02-17 19:05:24 +0100570 depends on CPU_XSCALE || CPU_XSC3
eric miao2c8086a2007-09-11 19:13:17 -0700571 default y if PXA27x || PXA3xx
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100572 help
573 Enable support for iWMMXt context switching at run time if
574 running on a CPU that supports it.
575
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
577config XSCALE_PMU
578 bool
579 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
580 default y
581
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100582if !MMU
583source "arch/arm/Kconfig-nommu"
584endif
585
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586endmenu
587
588source "arch/arm/common/Kconfig"
589
590config FORCE_MAX_ZONEORDER
591 int
592 depends on SA1111
593 default "9"
594
595menu "Bus support"
596
597config ARM_AMBA
598 bool
599
600config ISA
601 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 help
603 Find out whether you have ISA slots on your motherboard. ISA is the
604 name of a bus system, i.e. the way the CPU talks to the other stuff
605 inside your box. Other bus systems are PCI, EISA, MicroChannel
606 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
607 newer boards don't support it. If you have ISA, say Y, otherwise N.
608
Russell King065909b2006-01-04 15:44:16 +0000609# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610config ISA_DMA
611 bool
Russell King065909b2006-01-04 15:44:16 +0000612 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613
Russell King065909b2006-01-04 15:44:16 +0000614# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100615config ISA_DMA_API
616 bool
Al Viro5cae8412005-05-04 05:39:22 +0100617
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618config PCI
Mike Rapoporta0113a92007-11-25 08:55:34 +0100619 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 help
621 Find out whether you have a PCI motherboard. PCI is the name of a
622 bus system, i.e. the way the CPU talks to the other stuff inside
623 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
624 VESA. If you have PCI, say Y, otherwise N.
625
Matthew Wilcox36e23592007-07-10 10:54:40 -0600626config PCI_SYSCALL
627 def_bool PCI
628
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629# Select the host bridge type
630config PCI_HOST_VIA82C505
631 bool
632 depends on PCI && ARCH_SHARK
633 default y
634
Mike Rapoporta0113a92007-11-25 08:55:34 +0100635config PCI_HOST_ITE8152
636 bool
637 depends on PCI && MACH_ARMCORE
638 default y
639 select DMABOUNCE
640
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641source "drivers/pci/Kconfig"
642
643source "drivers/pcmcia/Kconfig"
644
645endmenu
646
647menu "Kernel Features"
648
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100649source "kernel/time/Kconfig"
650
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651config SMP
652 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Bahadir Balban78fdcb42008-04-18 22:43:14 +0100653 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 help
655 This enables support for systems with more than one CPU. If you have
656 a system with only one CPU, like most personal computers, say N. If
657 you have a system with more than one CPU, say Y.
658
659 If you say N here, the kernel will run on single and multiprocessor
660 machines, but will use only one CPU of a multiprocessor machine. If
661 you say Y here, the kernel will run on many, but not all, single
662 processor machines. On a single processor machine, the kernel will
663 run faster if you say N here.
664
Adrian Bunk03502fa2008-02-03 15:50:21 +0200665 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
667 <http://www.linuxdoc.org/docs.html#howto>.
668
669 If you don't know what to do here, say N.
670
671config NR_CPUS
672 int "Maximum number of CPUs (2-32)"
673 range 2 32
674 depends on SMP
675 default "4"
676
Russell Kinga054a812005-11-02 22:24:33 +0000677config HOTPLUG_CPU
678 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
679 depends on SMP && HOTPLUG && EXPERIMENTAL
680 help
681 Say Y here to experiment with turning CPUs off and on. CPUs
682 can be controlled through /sys/devices/system/cpu.
683
Russell King37ee16a2005-11-08 19:08:05 +0000684config LOCAL_TIMERS
685 bool "Use local timer interrupts"
Bahadir Balban78fdcb42008-04-18 22:43:14 +0100686 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
Russell King37ee16a2005-11-08 19:08:05 +0000687 default y
688 help
689 Enable support for local timers on SMP platforms, rather then the
690 legacy IPI broadcast method. Local timers allows the system
691 accounting to be spread across the timer interval, preventing a
692 "thundering herd" at every timer tick.
693
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694config PREEMPT
695 bool "Preemptible Kernel (EXPERIMENTAL)"
696 depends on EXPERIMENTAL
697 help
698 This option reduces the latency of the kernel when reacting to
699 real-time or interactive events by allowing a low priority process to
700 be preempted even if it is in kernel mode executing a system call.
701 This allows applications to run more reliably even when the system is
702 under load.
703
704 Say Y here if you are building a kernel for a desktop, embedded
705 or real-time system. Say N if you are unsure.
706
Russell King8749af62005-06-25 19:39:45 +0100707config NO_IDLE_HZ
708 bool "Dynamic tick timer"
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100709 depends on !GENERIC_CLOCKEVENTS
Russell King8749af62005-06-25 19:39:45 +0100710 help
711 Select this option if you want to disable continuous timer ticks
712 and have them programmed to occur as required. This option saves
713 power as the system can remain in idle state for longer.
714
715 By default dynamic tick is disabled during the boot, and can be
716 manually enabled with:
717
718 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
719
720 Alternatively, if you want dynamic tick automatically enabled
721 during boot, pass "dyntick=enable" via the kernel command string.
722
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100723 Please note that dynamic tick may affect the accuracy of
724 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100725 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
726 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100727
Russell Kingf8065812006-03-02 22:41:59 +0000728config HZ
729 int
730 default 128 if ARCH_L7200
731 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000732 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +0100733 default AT91_TIMER_HZ if ARCH_AT91
Russell Kingf8065812006-03-02 22:41:59 +0000734 default 100
735
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000736config AEABI
737 bool "Use the ARM EABI to compile the kernel"
738 help
739 This option allows for the kernel to be compiled using the latest
740 ARM ABI (aka EABI). This is only useful if you are using a user
741 space environment that is also compiled with EABI.
742
743 Since there are major incompatibilities between the legacy ABI and
744 EABI, especially with regard to structure member alignment, this
745 option also changes the kernel syscall calling convention to
746 disambiguate both ABIs and allow for backward compatibility support
747 (selected with CONFIG_OABI_COMPAT).
748
749 To use this you need GCC version 4.0.0 or later.
750
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000751config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000752 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000753 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000754 default y
755 help
756 This option preserves the old syscall interface along with the
757 new (ARM EABI) one. It also provides a compatibility layer to
758 intercept syscalls that have structure arguments which layout
759 in memory differs between the legacy ABI and the new ARM EABI
760 (only for non "thumb" binaries). This option adds a tiny
761 overhead to all syscalls and produces a slightly larger kernel.
762 If you know you'll be using only pure EABI user space then you
763 can say N here. If this option is not selected and you attempt
764 to execute a legacy ABI binary then the result will be
765 UNPREDICTABLE (in fact it can be predicted that it won't work
766 at all). If in doubt say Y.
767
Dave Hansen3f22ab22005-06-23 00:07:43 -0700768config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100770 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 help
772 Say Y to support efficient handling of discontiguous physical memory,
773 for architectures which are either NUMA (Non-Uniform Memory Access)
774 or have huge holes in the physical address space for other reasons.
775 See <file:Documentation/vm/numa> for more.
776
Russell King05944d72006-11-30 20:43:51 +0000777config ARCH_SPARSEMEM_ENABLE
778 bool
779
780config ARCH_SELECT_MEMORY_MODEL
781 bool
782
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700783config NODES_SHIFT
784 int
785 default "4" if ARCH_LH7A40X
786 default "2"
787 depends on NEED_MULTIPLE_NODES
788
Dave Hansen3f22ab22005-06-23 00:07:43 -0700789source "mm/Kconfig"
790
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791config LEDS
792 bool "Timer and CPU usage LEDs"
793 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
794 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
795 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
796 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000797 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100798 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
Ronen Shitrit817eb212007-10-17 14:51:34 -0400799 ARCH_KS8695 || MACH_RD88F5182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 help
801 If you say Y here, the LEDs on your machine will be used
802 to provide useful information about your current system status.
803
804 If you are compiling a kernel for a NetWinder or EBSA-285, you will
805 be able to select which LEDs are active using the options below. If
806 you are compiling a kernel for the EBSA-110 or the LART however, the
807 red LED will simply flash regularly to indicate that the system is
808 still functional. It is safe to say Y here if you have a CATS
809 system, but the driver will do nothing.
810
811config LEDS_TIMER
812 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -0700813 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
814 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +0100816 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 default y if ARCH_EBSA110
818 help
819 If you say Y here, one of the system LEDs (the green one on the
820 NetWinder, the amber one on the EBSA285, or the red one on the LART)
821 will flash regularly to indicate that the system is still
822 operational. This is mainly useful to kernel hackers who are
823 debugging unstable kernels.
824
825 The LART uses the same LED for both Timer LED and CPU usage LED
826 functions. You may choose to use both, but the Timer LED function
827 will overrule the CPU usage LED.
828
829config LEDS_CPU
830 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -0700831 !ARCH_OMAP) \
832 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
833 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 depends on LEDS
835 help
836 If you say Y here, the red LED will be used to give a good real
837 time indication of CPU usage, by lighting whenever the idle task
838 is not currently executing.
839
840 The LART uses the same LED for both Timer LED and CPU usage LED
841 functions. You may choose to use both, but the Timer LED function
842 will overrule the CPU usage LED.
843
844config ALIGNMENT_TRAP
845 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +0900846 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847 default y if !ARCH_EBSA110
848 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +0200849 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
851 address divisible by 4. On 32-bit ARM processors, these non-aligned
852 fetch/store instructions will be emulated in software if you say
853 here, which has a severe performance impact. This is necessary for
854 correct operation of some network protocols. With an IP-only
855 configuration it is safe to say N, otherwise say Y.
856
857endmenu
858
859menu "Boot options"
860
861# Compressed boot loader in ROM. Yes, we really want to ask about
862# TEXT and BSS so we preserve their values in the config files.
863config ZBOOT_ROM_TEXT
864 hex "Compressed ROM boot loader base address"
865 default "0"
866 help
867 The physical address at which the ROM-able zImage is to be
868 placed in the target. Platforms which normally make use of
869 ROM-able zImage formats normally set this to a suitable
870 value in their defconfig file.
871
872 If ZBOOT_ROM is not enabled, this has no effect.
873
874config ZBOOT_ROM_BSS
875 hex "Compressed ROM boot loader BSS address"
876 default "0"
877 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +0100878 The base address of an area of read/write memory in the target
879 for the ROM-able zImage which must be available while the
880 decompressor is running. It must be large enough to hold the
881 entire decompressed kernel plus an additional 128 KiB.
882 Platforms which normally make use of ROM-able zImage formats
883 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884
885 If ZBOOT_ROM is not enabled, this has no effect.
886
887config ZBOOT_ROM
888 bool "Compressed boot loader in ROM/flash"
889 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
890 help
891 Say Y here if you intend to execute your compressed kernel image
892 (zImage) directly from ROM or flash. If unsure, say N.
893
894config CMDLINE
895 string "Default kernel command string"
896 default ""
897 help
898 On some architectures (EBSA110 and CATS), there is currently no way
899 for the boot loader to pass arguments to the kernel. For these
900 architectures, you should supply some command-line options at build
901 time by entering them here. As a minimum, you should specify the
902 memory size and the root device (e.g., mem=64M root=/dev/nfs).
903
904config XIP_KERNEL
905 bool "Kernel Execute-In-Place from ROM"
906 depends on !ZBOOT_ROM
907 help
908 Execute-In-Place allows the kernel to run from non-volatile storage
909 directly addressable by the CPU, such as NOR flash. This saves RAM
910 space since the text section of the kernel is not loaded from flash
911 to RAM. Read-write sections, such as the data section and stack,
912 are still copied to RAM. The XIP kernel is not compressed since
913 it has to run directly from flash, so it will take more space to
914 store it. The flash address used to link the kernel object files,
915 and for storing it, is configuration dependent. Therefore, if you
916 say Y here, you must know the proper physical address where to
917 store the kernel image depending on your own flash memory usage.
918
919 Also note that the make target becomes "make xipImage" rather than
920 "make zImage" or "make Image". The final kernel binary to put in
921 ROM memory will be arch/arm/boot/xipImage.
922
923 If unsure, say N.
924
925config XIP_PHYS_ADDR
926 hex "XIP Kernel Physical Location"
927 depends on XIP_KERNEL
928 default "0x00080000"
929 help
930 This is the physical address in your flash memory the kernel will
931 be linked for and stored to. This address is dependent on your
932 own flash usage.
933
Richard Purdiec587e4a2007-02-06 21:29:00 +0100934config KEXEC
935 bool "Kexec system call (EXPERIMENTAL)"
936 depends on EXPERIMENTAL
937 help
938 kexec is a system call that implements the ability to shutdown your
939 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +0200940 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +0100941 you can start any kernel with it, not just Linux.
942
943 It is an ongoing process to be certain the hardware in a machine
944 is properly shutdown, so do not be surprised if this code does not
945 initially work for you. It may help to enable device hotplugging
946 support.
947
Richard Purdie4cd9d6f2008-01-02 00:56:46 +0100948config ATAGS_PROC
949 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +0100950 depends on KEXEC
951 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +0100952 help
953 Should the atags used to boot the kernel be exported in an "atags"
954 file in procfs. Useful with kexec.
955
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956endmenu
957
Russell King9e2697f2007-12-14 13:30:14 +0000958if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959
960menu "CPU Frequency scaling"
961
962source "drivers/cpufreq/Kconfig"
963
964config CPU_FREQ_SA1100
965 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100966 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 -0700967 default y
968
969config CPU_FREQ_SA1110
970 bool
971 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
972 default y
973
974config CPU_FREQ_INTEGRATOR
975 tristate "CPUfreq driver for ARM Integrator CPUs"
976 depends on ARCH_INTEGRATOR && CPU_FREQ
977 default y
978 help
979 This enables the CPUfreq driver for ARM Integrator CPUs.
980
981 For details, take a look at <file:Documentation/cpu-freq>.
982
983 If in doubt, say Y.
984
Pavel Pisa3c8cd0c2006-12-06 17:25:04 +0100985config CPU_FREQ_IMX
986 tristate "CPUfreq driver for i.MX CPUs"
987 depends on ARCH_IMX && CPU_FREQ
988 default n
989 help
990 This enables the CPUfreq driver for i.MX CPUs.
991
992 If in doubt, say N.
993
Russell King9e2697f2007-12-14 13:30:14 +0000994config CPU_FREQ_PXA
995 bool
996 depends on CPU_FREQ && ARCH_PXA && PXA25x
997 default y
998 select CPU_FREQ_DEFAULT_GOV_USERSPACE
999
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000endmenu
1001
1002endif
1003
1004menu "Floating point emulation"
1005
1006comment "At least one emulation must be selected"
1007
1008config FPE_NWFPE
1009 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001010 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 ---help---
1012 Say Y to include the NWFPE floating point emulator in the kernel.
1013 This is necessary to run most binaries. Linux does not currently
1014 support floating point hardware so you need to say Y here even if
1015 your machine has an FPA or floating point co-processor podule.
1016
1017 You may say N here if you are going to load the Acorn FPEmulator
1018 early in the bootup.
1019
1020config FPE_NWFPE_XP
1021 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001022 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 help
1024 Say Y to include 80-bit support in the kernel floating-point
1025 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1026 Note that gcc does not generate 80-bit operations by default,
1027 so in most cases this option only enlarges the size of the
1028 floating point emulator without any good reason.
1029
1030 You almost surely want to say N here.
1031
1032config FPE_FASTFPE
1033 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001034 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 ---help---
1036 Say Y here to include the FAST floating point emulator in the kernel.
1037 This is an experimental much faster emulator which now also has full
1038 precision for the mantissa. It does not support any exceptions.
1039 It is very simple, and approximately 3-6 times faster than NWFPE.
1040
1041 It should be sufficient for most programs. It may be not suitable
1042 for scientific calculations, but you have to check this for yourself.
1043 If you do not feel you need a faster FP emulation you should better
1044 choose NWFPE.
1045
1046config VFP
1047 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001048 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049 help
1050 Say Y to include VFP support code in the kernel. This is needed
1051 if your hardware includes a VFP unit.
1052
1053 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1054 release notes and additional status information.
1055
1056 Say N if your target does not have VFP hardware.
1057
Catalin Marinas25ebee02007-09-25 15:22:24 +01001058config VFPv3
1059 bool
1060 depends on VFP
1061 default y if CPU_V7
1062
Catalin Marinasb5872db2008-01-10 19:16:17 +01001063config NEON
1064 bool "Advanced SIMD (NEON) Extension support"
1065 depends on VFPv3 && CPU_V7
1066 help
1067 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1068 Extension.
1069
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070endmenu
1071
1072menu "Userspace binary formats"
1073
1074source "fs/Kconfig.binfmt"
1075
1076config ARTHUR
1077 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001078 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 help
1080 Say Y here to include the kernel code necessary if you want to run
1081 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1082 experimental; if this sounds frightening, say N and sleep in peace.
1083 You can also say M here to compile this support as a module (which
1084 will be called arthur).
1085
1086endmenu
1087
1088menu "Power management options"
1089
Russell Kingeceab4a2005-11-15 11:31:41 +00001090source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091
Johannes Bergf4cb5702007-12-08 02:14:00 +01001092config ARCH_SUSPEND_POSSIBLE
1093 def_bool y
1094
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095endmenu
1096
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001097source "net/Kconfig"
1098
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099menu "Device Drivers"
1100
1101source "drivers/base/Kconfig"
1102
Pavel Machekc35bf4a2005-11-12 20:25:25 +00001103source "drivers/connector/Kconfig"
1104
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001105if ALIGNMENT_TRAP || !CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106source "drivers/mtd/Kconfig"
1107endif
1108
1109source "drivers/parport/Kconfig"
1110
1111source "drivers/pnp/Kconfig"
1112
1113source "drivers/block/Kconfig"
1114
Russell King58273e52007-10-12 22:24:09 +01001115# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1116
1117source "drivers/misc/Kconfig"
1118
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119source "drivers/ide/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120
1121source "drivers/scsi/Kconfig"
1122
Martin Michlmayreb370f02006-11-17 00:14:35 +01001123source "drivers/ata/Kconfig"
1124
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125source "drivers/md/Kconfig"
1126
1127source "drivers/message/fusion/Kconfig"
1128
1129source "drivers/ieee1394/Kconfig"
1130
1131source "drivers/message/i2o/Kconfig"
1132
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001133source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134
1135source "drivers/isdn/Kconfig"
1136
1137# input before char - char/joystick depends on it. As does USB.
1138
1139source "drivers/input/Kconfig"
1140
1141source "drivers/char/Kconfig"
1142
1143source "drivers/i2c/Kconfig"
1144
David Brownell8ae12a02006-01-08 13:34:19 -08001145source "drivers/spi/Kconfig"
1146
David Brownella9c5fff2008-02-04 22:28:17 -08001147source "drivers/gpio/Kconfig"
1148
Alessandro Zummo04916c02006-03-10 22:30:01 +00001149source "drivers/w1/Kconfig"
1150
Russell King58273e52007-10-12 22:24:09 +01001151source "drivers/power/Kconfig"
1152
Jean Delvaread2f9312005-07-02 18:15:49 +02001153source "drivers/hwmon/Kconfig"
1154
Russell King70dfa3f2007-11-07 14:13:35 +00001155source "drivers/watchdog/Kconfig"
1156
Russell King58273e52007-10-12 22:24:09 +01001157source "drivers/ssb/Kconfig"
1158
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159#source "drivers/l3/Kconfig"
1160
Russell Kinga4e137a2005-08-18 10:06:59 +01001161source "drivers/mfd/Kconfig"
1162
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163source "drivers/media/Kconfig"
1164
1165source "drivers/video/Kconfig"
1166
1167source "sound/Kconfig"
1168
Sascha Hauerc2dade512006-12-12 10:32:42 +01001169source "drivers/hid/Kconfig"
1170
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171source "drivers/usb/Kconfig"
1172
1173source "drivers/mmc/Kconfig"
1174
Russell King58273e52007-10-12 22:24:09 +01001175source "drivers/leds/Kconfig"
1176
Alessandro Zummo12b824f2006-03-27 01:16:35 -08001177source "drivers/rtc/Kconfig"
1178
Dan Williams58168152007-01-02 11:10:43 -07001179source "drivers/dma/Kconfig"
1180
Dan Williamsabf07b12008-01-18 23:26:10 +01001181source "drivers/dca/Kconfig"
1182
Hans-Jürgen Koch2dc034a2008-02-19 21:07:19 +01001183source "drivers/uio/Kconfig"
1184
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185endmenu
1186
1187source "fs/Kconfig"
1188
Linus Torvalds1da177e2005-04-16 15:20:36 -07001189source "arch/arm/Kconfig.debug"
1190
1191source "security/Kconfig"
1192
1193source "crypto/Kconfig"
1194
1195source "lib/Kconfig"