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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
David Woodhousee17c6d52008-06-17 12:19:34 +010011 select HAVE_AOUT
Adrian Bunk2064c942008-04-28 23:44:43 +020012 select HAVE_IDE
Russell King2778f622010-07-09 16:27:52 +010013 select HAVE_MEMBLOCK
Alessandro Zummo12b824f2006-03-27 01:16:35 -080014 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +000015 select SYS_SUPPORTS_APM_EMULATION
Will Deacon24b44a62010-01-20 19:05:07 +010016 select GENERIC_ATOMIC64 if (!CPU_32v6K)
Will Deaconfe166142010-04-30 11:37:51 +010017 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jason Wessel5cbad0e2008-02-20 13:33:40 -060018 select HAVE_ARCH_KGDB
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050019 select HAVE_KPROBES if (!XIP_KERNEL)
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080020 select HAVE_KRETPROBES if (HAVE_KPROBES)
Steven Rostedt606576c2008-10-06 19:06:12 -040021 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
Dmitry Baryshkov1fe53262008-07-18 13:30:14 +040022 select HAVE_GENERIC_DMA_COHERENT
Albin Tonnerree7db7b42010-01-08 14:42:43 -080023 select HAVE_KERNEL_GZIP
24 select HAVE_KERNEL_LZO
Albin Tonnerre6e8699f2010-04-03 11:40:28 +010025 select HAVE_KERNEL_LZMA
Jamie Iles7ada1892010-02-02 20:24:58 +010026 select HAVE_PERF_EVENTS
27 select PERF_USE_VMALLOC
Will Deacone513f8b2010-06-25 12:24:53 +010028 select HAVE_REGS_AND_STACK_ACCESS_API
Linus Torvalds1da177e2005-04-16 15:20:36 -070029 help
30 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000031 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000033 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 Europe. There is an ARM Linux project with a web page at
35 <http://www.arm.linux.org.uk/>.
36
Russell King1a189b92008-04-13 21:41:55 +010037config HAVE_PWM
38 bool
39
Ralf Baechle75e71532007-02-09 17:08:58 +000040config SYS_SUPPORTS_APM_EMULATION
41 bool
42
David Brownell0a938b92007-03-05 00:30:18 -080043config GENERIC_GPIO
44 bool
David Brownell0a938b92007-03-05 00:30:18 -080045
John Stultz5cfc8ee2010-03-24 00:22:36 +000046config ARCH_USES_GETTIMEOFFSET
47 bool
48 default n
Kevin Hilman746140c2006-09-22 00:16:30 +010049
Kevin Hilman0567a0c2007-03-13 20:29:24 +010050config GENERIC_CLOCKEVENTS
51 bool
Kevin Hilman0567a0c2007-03-13 20:29:24 +010052
Catalin Marinasa8655e82008-02-04 17:30:57 +010053config GENERIC_CLOCKEVENTS_BROADCAST
54 bool
55 depends on GENERIC_CLOCKEVENTS
Russell King5388a6b2010-07-26 13:19:43 +010056 default y if SMP
Catalin Marinasa8655e82008-02-04 17:30:57 +010057
Linus Walleijbc581772009-09-15 17:30:37 +010058config HAVE_TCM
59 bool
60 select GENERIC_ALLOCATOR
61
Russell Kinge119bff2010-01-10 17:23:29 +000062config HAVE_PROC_CPU
63 bool
64
Al Viro5ea81762007-02-11 15:41:31 +000065config NO_IOPORT
66 bool
Al Viro5ea81762007-02-11 15:41:31 +000067
Linus Torvalds1da177e2005-04-16 15:20:36 -070068config EISA
69 bool
70 ---help---
71 The Extended Industry Standard Architecture (EISA) bus was
72 developed as an open alternative to the IBM MicroChannel bus.
73
74 The EISA bus provided some of the features of the IBM MicroChannel
75 bus while maintaining backward compatibility with cards made for
76 the older ISA bus. The EISA bus saw limited use between 1988 and
77 1995 when it was made obsolete by the PCI bus.
78
79 Say Y here if you are building a kernel for an EISA-based machine.
80
81 Otherwise, say N.
82
83config SBUS
84 bool
85
86config MCA
87 bool
88 help
89 MicroChannel Architecture is found in some IBM PS/2 machines and
90 laptops. It is a bus system similar to PCI or ISA. See
91 <file:Documentation/mca.txt> (and especially the web page given
92 there) before attempting to build an MCA bus kernel.
93
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010094config GENERIC_HARDIRQS
95 bool
96 default y
97
Russell Kingf16fb1e2007-04-28 09:59:37 +010098config STACKTRACE_SUPPORT
99 bool
100 default y
101
Nicolas Pitref76e9152008-04-24 01:31:46 -0400102config HAVE_LATENCYTOP_SUPPORT
103 bool
104 depends on !SMP
105 default y
106
Russell Kingf16fb1e2007-04-28 09:59:37 +0100107config LOCKDEP_SUPPORT
108 bool
109 default y
110
Russell King7ad1bcb2006-08-27 12:07:02 +0100111config TRACE_IRQFLAGS_SUPPORT
112 bool
113 default y
114
Thomas Gleixner4a2581a2006-07-01 22:30:09 +0100115config HARDIRQS_SW_RESEND
116 bool
117 default y
118
119config GENERIC_IRQ_PROBE
120 bool
121 default y
122
Nick Piggin95c354f2008-01-30 13:31:20 +0100123config GENERIC_LOCKBREAK
124 bool
125 default y
126 depends on SMP && PREEMPT
127
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128config RWSEM_GENERIC_SPINLOCK
129 bool
130 default y
131
132config RWSEM_XCHGADD_ALGORITHM
133 bool
134
David Howellsf0d1b0b2006-12-08 02:37:49 -0800135config ARCH_HAS_ILOG2_U32
136 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800137
138config ARCH_HAS_ILOG2_U64
139 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800140
Ben Dooks89c52ed2009-07-30 23:23:24 +0100141config ARCH_HAS_CPUFREQ
142 bool
143 help
144 Internal node to signify that the ARCH has CPUFREQ support
145 and that the relevant menu configurations are displayed for
146 it.
147
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800148config GENERIC_HWEIGHT
149 bool
150 default y
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152config GENERIC_CALIBRATE_DELAY
153 bool
154 default y
155
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100156config ARCH_MAY_HAVE_PC_FDC
157 bool
158
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800159config ZONE_DMA
160 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800161
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800162config NEED_DMA_MAP_STATE
163 def_bool y
164
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165config GENERIC_ISA_DMA
166 bool
167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168config FIQ
169 bool
170
Al Viro034d2f52005-12-19 16:27:59 -0500171config ARCH_MTD_XIP
172 bool
173
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100174config GENERIC_HARDIRQS_NO__DO_IRQ
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100175 def_bool y
176
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100177config ARM_L1_CACHE_SHIFT_6
178 bool
179 help
180 Setting ARM L1 cache line size to 64 Bytes.
181
Hyok S. Choic760fc12006-03-27 15:18:50 +0100182config VECTORS_BASE
183 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900184 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100185 default DRAM_BASE if REMAP_VECTORS_TO_RAM
186 default 0x00000000
187 help
188 The base address of exception vectors.
189
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190source "init/Kconfig"
191
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700192source "kernel/Kconfig.freezer"
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194menu "System Type"
195
Hyok S. Choi3c427972009-07-24 12:35:00 +0100196config MMU
197 bool "MMU-based Paged Memory Management Support"
198 default y
199 help
200 Select if you want MMU-based virtualised addressing space
201 support by paged memory management. If unsure, say 'Y'.
202
Russell Kingccf50e22010-03-15 19:03:06 +0000203#
204# The "ARM system type" choice list is ordered alphabetically by option
205# text. Please add new entries in the option alphabetic order.
206#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207choice
208 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000209 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100211config ARCH_AAEC2000
212 bool "Agilent AAEC-2000 based"
Russell Kingc7508152008-10-26 10:55:14 +0000213 select CPU_ARM920T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100214 select ARM_AMBA
David Brownell9483a572008-07-23 21:26:48 -0700215 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000216 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100217 help
218 This enables support for systems based on the Agilent AAEC-2000
219
220config ARCH_INTEGRATOR
221 bool "ARM Ltd. Integrator family"
222 select ARM_AMBA
Ben Dooks89c52ed2009-07-30 23:23:24 +0100223 select ARCH_HAS_CPUFREQ
Russell Kingd72fbdf2008-11-08 20:08:08 +0000224 select COMMON_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000225 select ICST
Russell King13edd862010-01-15 21:49:23 +0000226 select GENERIC_CLOCKEVENTS
Russell Kingf4b8b312010-01-14 12:48:06 +0000227 select PLAT_VERSATILE
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100228 help
229 Support for ARM's Integrator platform.
230
231config ARCH_REALVIEW
232 bool "ARM Ltd. RealView family"
233 select ARM_AMBA
Russell Kingcf30fb42008-11-08 20:05:55 +0000234 select COMMON_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000235 select ICST
Catalin Marinasae30cea2008-02-04 17:26:55 +0100236 select GENERIC_CLOCKEVENTS
Russell Kingeb7fffa2009-07-05 22:41:31 +0100237 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000238 select PLAT_VERSATILE
Russell Kinge3887712010-01-14 13:30:16 +0000239 select ARM_TIMER_SP804
Colin Tuckleyb56ba8a2010-02-24 15:23:10 +0100240 select GPIO_PL061 if GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100241 help
242 This enables support for ARM Ltd RealView boards.
243
244config ARCH_VERSATILE
245 bool "ARM Ltd. Versatile family"
246 select ARM_AMBA
247 select ARM_VIC
Russell King71a06da2008-11-08 20:13:53 +0000248 select COMMON_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000249 select ICST
Kevin Hilman89df1272007-03-08 20:30:38 +0100250 select GENERIC_CLOCKEVENTS
Russell Kingbbeddc42009-07-05 22:43:01 +0100251 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000252 select PLAT_VERSATILE
Russell Kinge3887712010-01-14 13:30:16 +0000253 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100254 help
255 This enables support for ARM Ltd Versatile board.
256
Russell Kingceade892010-02-11 21:44:53 +0000257config ARCH_VEXPRESS
258 bool "ARM Ltd. Versatile Express family"
259 select ARCH_WANT_OPTIONAL_GPIOLIB
260 select ARM_AMBA
261 select ARM_TIMER_SP804
262 select COMMON_CLKDEV
263 select GENERIC_CLOCKEVENTS
Russell Kingceade892010-02-11 21:44:53 +0000264 select HAVE_CLK
265 select ICST
266 select PLAT_VERSATILE
267 help
268 This enables support for the ARM Ltd Versatile Express boards.
269
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100270config ARCH_AT91
271 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100272 select ARCH_REQUIRE_GPIOLIB
David Brownell93686ae2008-07-28 15:46:22 -0700273 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000274 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100275 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100276 This enables support for systems based on the Atmel AT91RM9200,
277 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100278
Russell Kingccf50e22010-03-15 19:03:06 +0000279config ARCH_BCMRING
280 bool "Broadcom BCMRING"
281 depends on MMU
282 select CPU_V6
283 select ARM_AMBA
284 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000285 select GENERIC_CLOCKEVENTS
286 select ARCH_WANT_OPTIONAL_GPIOLIB
287 help
288 Support for Broadcom's BCMRing platform.
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100291 bool "Cirrus Logic CLPS711x/EP721x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000292 select CPU_ARM720T
John Stultz5cfc8ee2010-03-24 00:22:36 +0000293 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000294 help
295 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300297config ARCH_CNS3XXX
298 bool "Cavium Networks CNS3XXX family"
299 select CPU_V6
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300300 select GENERIC_CLOCKEVENTS
301 select ARM_GIC
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +0400302 select PCI_DOMAINS if PCI
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300303 help
304 Support for Cavium Networks CNS3XXX platform.
305
Russell King788c9702009-04-26 14:21:59 +0100306config ARCH_GEMINI
307 bool "Cortina Systems Gemini"
308 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100309 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000310 select ARCH_USES_GETTIMEOFFSET
Russell King788c9702009-04-26 14:21:59 +0100311 help
312 Support for the Cortina Systems Gemini family SoCs
313
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314config ARCH_EBSA110
315 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000316 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100317 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000318 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000319 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 help
321 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000322 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 Ethernet interface, two PCMCIA sockets, two serial ports and a
324 parallel port.
325
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000326config ARCH_EP93XX
327 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000328 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000329 select ARM_AMBA
330 select ARM_VIC
Russell Kingae696fd2008-11-30 17:11:49 +0000331 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700332 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100333 select ARCH_HAS_HOLES_MEMORYMODEL
John Stultz5cfc8ee2010-03-24 00:22:36 +0000334 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000335 help
336 This enables support for the Cirrus EP93xx series of CPUs.
337
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338config ARCH_FOOTBRIDGE
339 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000340 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 select FOOTBRIDGE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000342 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000343 help
344 Support for systems based on the DC21285 companion chip
345 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
Russell King788c9702009-04-26 14:21:59 +0100347config ARCH_MXC
348 bool "Freescale MXC/iMX-based"
Russell King788c9702009-04-26 14:21:59 +0100349 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100350 select ARCH_REQUIRE_GPIOLIB
Uwe Kleine-König03e09cd2010-02-15 17:10:42 +0100351 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100352 help
353 Support for Freescale MXC/iMX-based family of processors
354
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100355config ARCH_STMP3XXX
356 bool "Freescale STMP3xxx"
357 select CPU_ARM926T
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100358 select COMMON_CLKDEV
359 select ARCH_REQUIRE_GPIOLIB
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100360 select GENERIC_CLOCKEVENTS
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100361 select USB_ARCH_HAS_EHCI
362 help
363 Support for systems based on the Freescale 3xxx CPUs.
364
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100365config ARCH_NETX
366 bool "Hilscher NetX based"
Russell Kingc7508152008-10-26 10:55:14 +0000367 select CPU_ARM926T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100368 select ARM_VIC
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100369 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000370 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100371 This enables support for systems based on the Hilscher NetX Soc
372
373config ARCH_H720X
374 bool "Hynix HMS720x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000375 select CPU_ARM720T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100376 select ISA_DMA_API
John Stultz5cfc8ee2010-03-24 00:22:36 +0000377 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100378 help
379 This enables support for systems based on the Hynix HMS720x
380
Russell King3b938be2007-05-12 11:25:44 +0100381config ARCH_IOP13XX
382 bool "IOP13xx-based"
383 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000384 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100385 select PLAT_IOP
386 select PCI
387 select ARCH_SUPPORTS_MSI
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +0100388 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100389 help
390 Support for Intel's IOP13XX (XScale) family of processors.
391
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100392config ARCH_IOP32X
393 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100394 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000395 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100396 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100397 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100398 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000399 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100400 Support for Intel's 80219 and IOP32X (XScale) family of
401 processors.
402
403config ARCH_IOP33X
404 bool "IOP33x-based"
405 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000406 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100407 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100408 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100409 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100410 help
411 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412
Russell King3b938be2007-05-12 11:25:44 +0100413config ARCH_IXP23XX
414 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100415 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000416 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100417 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000418 select ARCH_USES_GETTIMEOFFSET
Dan Williams285f5fa2006-12-07 02:59:39 +0100419 help
Russell King3b938be2007-05-12 11:25:44 +0100420 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421
422config ARCH_IXP2000
423 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100424 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000425 select CPU_XSCALE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100426 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000427 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000428 help
429 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
Russell King3b938be2007-05-12 11:25:44 +0100431config ARCH_IXP4XX
432 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100433 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000434 select CPU_XSCALE
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100435 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100436 select GENERIC_CLOCKEVENTS
Russell King485bdde2008-10-17 14:00:43 +0100437 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100438 help
Russell King3b938be2007-05-12 11:25:44 +0100439 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100440
Saeed Bisharaedabd382009-08-06 15:12:43 +0300441config ARCH_DOVE
442 bool "Marvell Dove"
443 select PCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300444 select ARCH_REQUIRE_GPIOLIB
Saeed Bisharaedabd382009-08-06 15:12:43 +0300445 select GENERIC_CLOCKEVENTS
446 select PLAT_ORION
447 help
448 Support for the Marvell Dove SoC 88AP510
449
Saeed Bishara651c74c2008-06-22 22:45:06 +0200450config ARCH_KIRKWOOD
451 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000452 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200453 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700454 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200455 select GENERIC_CLOCKEVENTS
456 select PLAT_ORION
457 help
458 Support for the following Marvell Kirkwood series SoCs:
459 88F6180, 88F6192 and 88F6281.
460
Russell King788c9702009-04-26 14:21:59 +0100461config ARCH_LOKI
462 bool "Marvell Loki (88RC8480)"
463 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100464 select GENERIC_CLOCKEVENTS
465 select PLAT_ORION
466 help
467 Support for the Marvell Loki (88RC8480) SoC.
468
Kevin Wells40805942010-07-27 08:49:04 -0700469config ARCH_LPC32XX
470 bool "NXP LPC32XX"
471 select CPU_ARM926T
472 select ARCH_REQUIRE_GPIOLIB
473 select HAVE_IDE
474 select ARM_AMBA
475 select USB_ARCH_HAS_OHCI
476 select COMMON_CLKDEV
477 select GENERIC_TIME
478 select GENERIC_CLOCKEVENTS
479 help
480 Support for the NXP LPC32XX family of processors
481
Russell King788c9702009-04-26 14:21:59 +0100482config ARCH_MV78XX0
483 bool "Marvell MV78xx0"
484 select CPU_FEROCEON
485 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700486 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100487 select GENERIC_CLOCKEVENTS
488 select PLAT_ORION
489 help
490 Support for the following Marvell MV78xx0 series SoCs:
491 MV781x0, MV782x0.
492
493config ARCH_ORION5X
494 bool "Marvell Orion"
495 depends on MMU
496 select CPU_FEROCEON
497 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700498 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100499 select GENERIC_CLOCKEVENTS
500 select PLAT_ORION
501 help
502 Support for the following Marvell Orion 5x series SoCs:
503 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
504 Orion-2 (5281), Orion-1-90 (6183).
505
506config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500507 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100508 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100509 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100510 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100511 select GENERIC_CLOCKEVENTS
512 select TICK_ONESHOT
513 select PLAT_PXA
514 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500515 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100516
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100517config ARCH_KS8695
518 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000519 select CPU_ARM922T
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100520 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000521 select ARCH_USES_GETTIMEOFFSET
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100522 help
523 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
524 System-on-Chip devices.
525
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100526config ARCH_NS9XXX
527 bool "NetSilicon NS9xxx"
Russell Kingc7508152008-10-26 10:55:14 +0000528 select CPU_ARM926T
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100529 select GENERIC_GPIO
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100530 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700531 select HAVE_CLK
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100532 help
533 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
534 System.
535
536 <http://www.digi.com/products/microprocessors/index.jsp>
537
Russell King788c9702009-04-26 14:21:59 +0100538config ARCH_W90X900
539 bool "Nuvoton W90X900 CPU"
540 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100541 select ARCH_REQUIRE_GPIOLIB
wanzongshun0e4a34b2009-06-10 15:50:44 +0100542 select COMMON_CLKDEV
wanzongshun58b53692009-08-14 15:36:44 +0100543 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200544 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100545 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
546 At present, the w90x900 has been renamed nuc900, regarding
547 the ARM series product line, you can login the following
548 link address to know more.
549
550 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
551 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400552
wanzongshuna62e9032009-12-31 15:06:05 +0100553config ARCH_NUC93X
554 bool "Nuvoton NUC93X CPU"
555 select CPU_ARM926T
wanzongshuna62e9032009-12-31 15:06:05 +0100556 select COMMON_CLKDEV
557 help
558 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
559 low-power and high performance MPEG-4/JPEG multimedia controller chip.
560
Erik Gillingc5f80062010-01-21 16:53:02 -0800561config ARCH_TEGRA
562 bool "NVIDIA Tegra"
563 select GENERIC_TIME
564 select GENERIC_CLOCKEVENTS
565 select GENERIC_GPIO
566 select HAVE_CLK
Colin Crossd8611962010-01-28 16:40:29 -0800567 select COMMON_CLKDEV
Erik Gillingc5f80062010-01-21 16:53:02 -0800568 select ARCH_HAS_BARRIERS if CACHE_L2X0
569 help
570 This enables support for NVIDIA Tegra based systems (Tegra APX,
571 Tegra 6xx and Tegra 2 series).
572
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100573config ARCH_PNX4008
574 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000575 select CPU_ARM926T
Russell King6985a5a2009-11-20 10:32:41 +0000576 select COMMON_CLKDEV
John Stultz5cfc8ee2010-03-24 00:22:36 +0000577 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100578 help
579 This enables support for Philips PNX4008 mobile platform.
580
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700582 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100583 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500584 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100585 select ARCH_HAS_CPUFREQ
Russell King8c3abc72008-11-08 20:25:21 +0000586 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700587 select ARCH_REQUIRE_GPIOLIB
Eric Miao981d0f32007-07-24 01:22:43 +0100588 select GENERIC_CLOCKEVENTS
Russell Kinga88264c2007-11-12 22:45:16 +0000589 select TICK_ONESHOT
Eric Miaobd5ce432009-01-20 12:06:01 +0800590 select PLAT_PXA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000591 help
eric miao2c8086a2007-09-11 19:13:17 -0700592 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
Russell King788c9702009-04-26 14:21:59 +0100594config ARCH_MSM
595 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500596 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800597 select GENERIC_CLOCKEVENTS
Pavel Machek923a0812010-06-02 11:11:12 -0700598 select ARCH_REQUIRE_GPIOLIB
Eric Miao49cbe782009-01-20 14:15:18 +0800599 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800600 Support for Qualcomm MSM/QSD based systems. This runs on the
601 apps processor of the MSM/QSD and depends on a shared memory
602 interface to the modem processor which runs the baseband
603 stack and controls some vital subsystems
604 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800605
Magnus Dammc793c1b2010-02-05 11:14:49 +0000606config ARCH_SHMOBILE
607 bool "Renesas SH-Mobile"
608 help
609 Support for Renesas's SH-Mobile ARM platforms
610
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611config ARCH_RPC
612 bool "RiscPC"
613 select ARCH_ACORN
614 select FIQ
615 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100616 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100617 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000618 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000619 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100620 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000621 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 help
623 On the Acorn Risc-PC, Linux can support the internal IDE disk and
624 CD-ROM interface, serial and parallel port, and the floppy drive.
625
626config ARCH_SA1100
627 bool "SA1100-based"
Russell Kingc7508152008-10-26 10:55:14 +0000628 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100629 select ISA
Russell King05944d72006-11-30 20:43:51 +0000630 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500631 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100632 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000633 select CPU_FREQ
Russell King3e238be2008-04-14 23:03:10 +0100634 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700635 select HAVE_CLK
Russell King3e238be2008-04-14 23:03:10 +0100636 select TICK_ONESHOT
Michael Buesch7444a722008-07-25 01:46:11 -0700637 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000638 help
639 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640
641config ARCH_S3C2410
Ben Dooks63b1f512010-04-30 16:32:26 +0900642 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
David Brownell0a938b92007-03-05 00:30:18 -0800643 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100644 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700645 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000646 select ARCH_USES_GETTIMEOFFSET
Naveen Krishna Ch4b623922010-07-29 18:49:34 +0900647 select HAVE_S3C2410_I2C
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 help
649 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
650 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000651 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652
Ben Dooks63b1f512010-04-30 16:32:26 +0900653 Note, the S3C2416 and the S3C2450 are so close that they even share
654 the same SoC ID code. This means that there is no seperate machine
655 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
656
Ben Dooksa08ab632008-10-21 14:06:39 +0100657config ARCH_S3C64XX
658 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000659 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900660 select CPU_V6
Ben Dooks89f0ce72010-01-26 15:49:15 +0900661 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100662 select HAVE_CLK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900663 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000664 select ARCH_USES_GETTIMEOFFSET
Ben Dooks89c52ed2009-07-30 23:23:24 +0100665 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900666 select ARCH_REQUIRE_GPIOLIB
667 select SAMSUNG_CLKSRC
668 select SAMSUNG_IRQ_VIC_TIMER
669 select SAMSUNG_IRQ_UART
670 select S3C_GPIO_TRACK
671 select S3C_GPIO_PULL_UPDOWN
672 select S3C_GPIO_CFG_S3C24XX
673 select S3C_GPIO_CFG_S3C64XX
674 select S3C_DEV_NAND
675 select USB_ARCH_HAS_OHCI
676 select SAMSUNG_GPIOLIB_4BIT
Naveen Krishna Ch4b623922010-07-29 18:49:34 +0900677 select HAVE_S3C2410_I2C
Banajit Goswamid8653d92010-07-29 22:22:40 +0900678 select HAVE_S3C2410_WATCHDOG
Ben Dooksa08ab632008-10-21 14:06:39 +0100679 help
680 Samsung S3C64XX series based systems
681
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900682config ARCH_S5P6440
683 bool "Samsung S5P6440"
684 select CPU_V6
685 select GENERIC_GPIO
686 select HAVE_CLK
Banajit Goswamid8653d92010-07-29 22:22:40 +0900687 select HAVE_S3C2410_WATCHDOG
Ben Dooks925c68c2010-05-20 20:48:28 +0900688 select ARCH_USES_GETTIMEOFFSET
Naveen Krishna Ch4b623922010-07-29 18:49:34 +0900689 select HAVE_S3C2410_I2C
Atul Dahiya03eb2742010-07-21 17:40:59 +0900690 select HAVE_S3C_RTC
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900691 help
692 Samsung S5P6440 CPU based systems
693
Kukjin Kim550db7f2010-01-29 10:19:26 +0900694config ARCH_S5P6442
695 bool "Samsung S5P6442"
696 select CPU_V6
697 select GENERIC_GPIO
698 select HAVE_CLK
Ben Dooks925c68c2010-05-20 20:48:28 +0900699 select ARCH_USES_GETTIMEOFFSET
Banajit Goswamid8653d92010-07-29 22:22:40 +0900700 select HAVE_S3C2410_WATCHDOG
Kukjin Kim550db7f2010-01-29 10:19:26 +0900701 help
702 Samsung S5P6442 CPU based systems
703
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200704config ARCH_S5PC100
705 bool "Samsung S5PC100"
Byungho Min5a7652f2009-06-23 21:39:42 +0900706 select GENERIC_GPIO
707 select HAVE_CLK
708 select CPU_V7
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100709 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900710 select ARCH_USES_GETTIMEOFFSET
Naveen Krishna Ch4b623922010-07-29 18:49:34 +0900711 select HAVE_S3C2410_I2C
Atul Dahiya03eb2742010-07-21 17:40:59 +0900712 select HAVE_S3C_RTC
Banajit Goswamid8653d92010-07-29 22:22:40 +0900713 select HAVE_S3C2410_WATCHDOG
Byungho Min5a7652f2009-06-23 21:39:42 +0900714 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200715 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900716
Kukjin Kim170f4e42010-02-24 16:40:44 +0900717config ARCH_S5PV210
718 bool "Samsung S5PV210/S5PC110"
719 select CPU_V7
720 select GENERIC_GPIO
721 select HAVE_CLK
722 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900723 select ARCH_USES_GETTIMEOFFSET
Naveen Krishna Ch4b623922010-07-29 18:49:34 +0900724 select HAVE_S3C2410_I2C
Atul Dahiya03eb2742010-07-21 17:40:59 +0900725 select HAVE_S3C_RTC
Banajit Goswamid8653d92010-07-29 22:22:40 +0900726 select HAVE_S3C2410_WATCHDOG
Kukjin Kim170f4e42010-02-24 16:40:44 +0900727 help
728 Samsung S5PV210/S5PC110 series based systems
729
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900730config ARCH_S5PV310
731 bool "Samsung S5PV310/S5PC210"
732 select CPU_V7
733 select GENERIC_GPIO
734 select HAVE_CLK
735 select GENERIC_CLOCKEVENTS
736 help
737 Samsung S5PV310 series based systems
738
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739config ARCH_SHARK
740 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000741 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100742 select ISA
743 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100744 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100745 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000746 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000747 help
748 Support for the StrongARM based Digital DNARD machine, also known
749 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750
751config ARCH_LH7A40X
752 bool "Sharp LH7A40X"
Russell Kingc7508152008-10-26 10:55:14 +0000753 select CPU_ARM922T
Russell King4ba3f7c2008-10-01 21:38:23 +0100754 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
John Stultz5cfc8ee2010-03-24 00:22:36 +0000755 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 help
757 Say Y here for systems based on one of the Sharp LH7A40X
758 System on a Chip processors. These CPUs include an ARM922T
759 core with a wide array of integrated devices for
760 hand-held and low-power applications.
761
Linus Walleijd98aac72009-04-27 10:21:46 +0100762config ARCH_U300
763 bool "ST-Ericsson U300 Series"
764 depends on MMU
765 select CPU_ARM926T
Linus Walleijbc581772009-09-15 17:30:37 +0100766 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100767 select ARM_AMBA
768 select ARM_VIC
Linus Walleijd98aac72009-04-27 10:21:46 +0100769 select GENERIC_CLOCKEVENTS
Linus Walleijd98aac72009-04-27 10:21:46 +0100770 select COMMON_CLKDEV
771 select GENERIC_GPIO
772 help
773 Support for ST-Ericsson U300 series mobile platforms.
774
Russell Kingccf50e22010-03-15 19:03:06 +0000775config ARCH_U8500
776 bool "ST-Ericsson U8500 Series"
777 select CPU_V7
778 select ARM_AMBA
Russell Kingccf50e22010-03-15 19:03:06 +0000779 select GENERIC_CLOCKEVENTS
780 select COMMON_CLKDEV
Rabin Vincent94bdc0e2010-03-03 04:54:37 +0100781 select ARCH_REQUIRE_GPIOLIB
Russell Kingccf50e22010-03-15 19:03:06 +0000782 help
783 Support for ST-Ericsson's Ux500 architecture
784
785config ARCH_NOMADIK
786 bool "STMicroelectronics Nomadik"
787 select ARM_AMBA
788 select ARM_VIC
789 select CPU_ARM926T
Russell Kingccf50e22010-03-15 19:03:06 +0000790 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000791 select GENERIC_CLOCKEVENTS
Russell Kingccf50e22010-03-15 19:03:06 +0000792 select ARCH_REQUIRE_GPIOLIB
793 help
794 Support for the Nomadik platform by ST-Ericsson
795
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100796config ARCH_DAVINCI
797 bool "TI DaVinci"
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100798 select GENERIC_CLOCKEVENTS
David Brownelldce11152008-09-07 23:41:04 -0700799 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100800 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700801 select HAVE_IDE
Kevin Hilmanc5b736d2009-03-20 17:29:01 -0700802 select COMMON_CLKDEV
David Brownell20e99692009-05-07 09:31:42 -0700803 select GENERIC_ALLOCATOR
Sekhar Noriae88e052009-11-19 15:34:01 +0530804 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100805 help
806 Support for TI's DaVinci platform.
807
Russell King3b938be2007-05-12 11:25:44 +0100808config ARCH_OMAP
809 bool "TI OMAP"
David Brownell9483a572008-07-23 21:26:48 -0700810 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700811 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100812 select ARCH_HAS_CPUFREQ
Kevin Hilman06cad092007-10-18 23:04:43 -0700813 select GENERIC_CLOCKEVENTS
Sriram9af915d2010-01-29 14:20:05 -0800814 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100815 help
816 Support for TI's OMAP platform (OMAP1 and OMAP2).
817
viresh kumarcee37e52010-04-01 12:31:05 +0100818config PLAT_SPEAR
819 bool "ST SPEAr"
820 select ARM_AMBA
821 select ARCH_REQUIRE_GPIOLIB
822 select COMMON_CLKDEV
823 select GENERIC_CLOCKEVENTS
viresh kumarcee37e52010-04-01 12:31:05 +0100824 select HAVE_CLK
825 help
826 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
827
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828endchoice
829
Russell Kingccf50e22010-03-15 19:03:06 +0000830#
831# This is sorted alphabetically by mach-* pathname. However, plat-*
832# Kconfigs may be included either alphabetically (according to the
833# plat- suffix) or along side the corresponding mach-* source.
834#
Russell King95b8f202010-01-14 11:43:54 +0000835source "arch/arm/mach-aaec2000/Kconfig"
836
837source "arch/arm/mach-at91/Kconfig"
838
839source "arch/arm/mach-bcmring/Kconfig"
840
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841source "arch/arm/mach-clps711x/Kconfig"
842
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300843source "arch/arm/mach-cns3xxx/Kconfig"
844
Russell King95b8f202010-01-14 11:43:54 +0000845source "arch/arm/mach-davinci/Kconfig"
846
847source "arch/arm/mach-dove/Kconfig"
848
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000849source "arch/arm/mach-ep93xx/Kconfig"
850
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851source "arch/arm/mach-footbridge/Kconfig"
852
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200853source "arch/arm/mach-gemini/Kconfig"
854
Russell King95b8f202010-01-14 11:43:54 +0000855source "arch/arm/mach-h720x/Kconfig"
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857source "arch/arm/mach-integrator/Kconfig"
858
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100859source "arch/arm/mach-iop32x/Kconfig"
860
861source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862
Dan Williams285f5fa2006-12-07 02:59:39 +0100863source "arch/arm/mach-iop13xx/Kconfig"
864
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865source "arch/arm/mach-ixp4xx/Kconfig"
866
867source "arch/arm/mach-ixp2000/Kconfig"
868
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100869source "arch/arm/mach-ixp23xx/Kconfig"
870
Russell King95b8f202010-01-14 11:43:54 +0000871source "arch/arm/mach-kirkwood/Kconfig"
872
873source "arch/arm/mach-ks8695/Kconfig"
874
875source "arch/arm/mach-lh7a40x/Kconfig"
876
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200877source "arch/arm/mach-loki/Kconfig"
878
Kevin Wells40805942010-07-27 08:49:04 -0700879source "arch/arm/mach-lpc32xx/Kconfig"
880
Russell King95b8f202010-01-14 11:43:54 +0000881source "arch/arm/mach-msm/Kconfig"
882
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200883source "arch/arm/mach-mv78xx0/Kconfig"
884
Russell King95b8f202010-01-14 11:43:54 +0000885source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886
Russell King95b8f202010-01-14 11:43:54 +0000887source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800888
Russell King95b8f202010-01-14 11:43:54 +0000889source "arch/arm/mach-nomadik/Kconfig"
890source "arch/arm/plat-nomadik/Kconfig"
891
892source "arch/arm/mach-ns9xxx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893
Russell Kingd91a89102010-02-04 18:13:17 +0000894source "arch/arm/mach-nuc93x/Kconfig"
895
Tony Lindgrend48af152005-07-10 19:58:17 +0100896source "arch/arm/plat-omap/Kconfig"
897
898source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
Tony Lindgren1dbae812005-11-10 14:26:51 +0000900source "arch/arm/mach-omap2/Kconfig"
901
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400902source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400903
Russell King95b8f202010-01-14 11:43:54 +0000904source "arch/arm/mach-pxa/Kconfig"
905source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906
Russell King95b8f202010-01-14 11:43:54 +0000907source "arch/arm/mach-mmp/Kconfig"
908
909source "arch/arm/mach-realview/Kconfig"
910
911source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300912
Ben Dookscf383672009-11-10 00:14:58 +0000913source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100914source "arch/arm/plat-s3c24xx/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900915source "arch/arm/plat-s5p/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100916
viresh kumarcee37e52010-04-01 12:31:05 +0100917source "arch/arm/plat-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100918
919if ARCH_S3C2410
920source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100922source "arch/arm/mach-s3c2412/Kconfig"
Yauhen Kharuzhyf1290a42010-04-28 18:09:01 +0900923source "arch/arm/mach-s3c2416/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100924source "arch/arm/mach-s3c2440/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100925source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100926endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
Ben Dooksa08ab632008-10-21 14:06:39 +0100928if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900929source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100930endif
931
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900932source "arch/arm/mach-s5p6440/Kconfig"
933
Kukjin Kim550db7f2010-01-29 10:19:26 +0900934source "arch/arm/mach-s5p6442/Kconfig"
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100935
Byungho Min5a7652f2009-06-23 21:39:42 +0900936source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900937
Kukjin Kim170f4e42010-02-24 16:40:44 +0900938source "arch/arm/mach-s5pv210/Kconfig"
939
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900940source "arch/arm/mach-s5pv310/Kconfig"
941
Russell King882d01f2010-03-02 23:40:15 +0000942source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943
Russell King882d01f2010-03-02 23:40:15 +0000944source "arch/arm/plat-stmp3xxx/Kconfig"
Brian Swetland9e73c842007-11-26 04:12:13 -0800945
Erik Gillingc5f80062010-01-21 16:53:02 -0800946source "arch/arm/mach-tegra/Kconfig"
947
Russell King95b8f202010-01-14 11:43:54 +0000948source "arch/arm/mach-u300/Kconfig"
Quinn Jensen52c543f2007-07-09 22:06:53 +0100949
Russell King95b8f202010-01-14 11:43:54 +0000950source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951
952source "arch/arm/mach-versatile/Kconfig"
953
Russell Kingceade892010-02-11 21:44:53 +0000954source "arch/arm/mach-vexpress/Kconfig"
955
wanzongshun7ec80dd2008-12-03 03:55:38 +0100956source "arch/arm/mach-w90x900/Kconfig"
957
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958# Definitions to make life easier
959config ARCH_ACORN
960 bool
961
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100962config PLAT_IOP
963 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700964 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100965
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400966config PLAT_ORION
967 bool
968
Eric Miaobd5ce432009-01-20 12:06:01 +0800969config PLAT_PXA
970 bool
971
Russell Kingf4b8b312010-01-14 12:48:06 +0000972config PLAT_VERSATILE
973 bool
974
Russell Kinge3887712010-01-14 13:30:16 +0000975config ARM_TIMER_SP804
976 bool
977
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978source arch/arm/mm/Kconfig
979
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100980config IWMMXT
981 bool "Enable iWMMXt support"
Eric Miao40305a52009-02-26 09:34:35 +0800982 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
983 default y if PXA27x || PXA3xx || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100984 help
985 Enable support for iWMMXt context switching at run time if
986 running on a CPU that supports it.
987
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
989config XSCALE_PMU
990 bool
991 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
992 default y
993
Jamie Iles0f4f0672010-02-02 20:23:15 +0100994config CPU_HAS_PMU
Will Deacon8954bb02010-06-21 15:32:54 +0100995 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
996 (!ARCH_OMAP3 || OMAP3_EMU)
Jamie Iles0f4f0672010-02-02 20:23:15 +0100997 default y
998 bool
999
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001000if !MMU
1001source "arch/arm/Kconfig-nommu"
1002endif
1003
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001004config ARM_ERRATA_411920
1005 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1006 depends on CPU_V6 && !SMP
1007 help
1008 Invalidation of the Instruction Cache operation can
1009 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1010 It does not affect the MPCore. This option enables the ARM Ltd.
1011 recommended workaround.
1012
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001013config ARM_ERRATA_430973
1014 bool "ARM errata: Stale prediction on replaced interworking branch"
1015 depends on CPU_V7
1016 help
1017 This option enables the workaround for the 430973 Cortex-A8
1018 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1019 interworking branch is replaced with another code sequence at the
1020 same virtual address, whether due to self-modifying code or virtual
1021 to physical address re-mapping, Cortex-A8 does not recover from the
1022 stale interworking branch prediction. This results in Cortex-A8
1023 executing the new code sequence in the incorrect ARM or Thumb state.
1024 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1025 and also flushes the branch target cache at every context switch.
1026 Note that setting specific bits in the ACTLR register may not be
1027 available in non-secure mode.
1028
Catalin Marinas855c5512009-04-30 17:06:15 +01001029config ARM_ERRATA_458693
1030 bool "ARM errata: Processor deadlock when a false hazard is created"
1031 depends on CPU_V7
1032 help
1033 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1034 erratum. For very specific sequences of memory operations, it is
1035 possible for a hazard condition intended for a cache line to instead
1036 be incorrectly associated with a different cache line. This false
1037 hazard might then cause a processor deadlock. The workaround enables
1038 the L1 caching of the NEON accesses and disables the PLD instruction
1039 in the ACTLR register. Note that setting specific bits in the ACTLR
1040 register may not be available in non-secure mode.
1041
Catalin Marinas0516e462009-04-30 17:06:20 +01001042config ARM_ERRATA_460075
1043 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1044 depends on CPU_V7
1045 help
1046 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1047 erratum. Any asynchronous access to the L2 cache may encounter a
1048 situation in which recent store transactions to the L2 cache are lost
1049 and overwritten with stale memory contents from external memory. The
1050 workaround disables the write-allocate mode for the L2 cache via the
1051 ACTLR register. Note that setting specific bits in the ACTLR register
1052 may not be available in non-secure mode.
1053
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001054config PL310_ERRATA_588369
1055 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1056 depends on CACHE_L2X0 && ARCH_OMAP4
1057 help
1058 The PL310 L2 cache controller implements three types of Clean &
1059 Invalidate maintenance operations: by Physical Address
1060 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1061 They are architecturally defined to behave as the execution of a
1062 clean operation followed immediately by an invalidate operation,
1063 both performing to the same memory location. This functionality
1064 is not correctly implemented in PL310 as clean lines are not
1065 invalidated as a result of these operations. Note that this errata
1066 uses Texas Instrument's secure monitor api.
Will Deaconcdf357f2010-08-05 11:20:51 +01001067
1068config ARM_ERRATA_720789
1069 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1070 depends on CPU_V7 && SMP
1071 help
1072 This option enables the workaround for the 720789 Cortex-A9 (prior to
1073 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1074 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1075 As a consequence of this erratum, some TLB entries which should be
1076 invalidated are not, resulting in an incoherency in the system page
1077 tables. The workaround changes the TLB flushing routines to invalidate
1078 entries regardless of the ASID.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079endmenu
1080
1081source "arch/arm/common/Kconfig"
1082
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083menu "Bus support"
1084
1085config ARM_AMBA
1086 bool
1087
1088config ISA
1089 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090 help
1091 Find out whether you have ISA slots on your motherboard. ISA is the
1092 name of a bus system, i.e. the way the CPU talks to the other stuff
1093 inside your box. Other bus systems are PCI, EISA, MicroChannel
1094 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1095 newer boards don't support it. If you have ISA, say Y, otherwise N.
1096
Russell King065909b2006-01-04 15:44:16 +00001097# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098config ISA_DMA
1099 bool
Russell King065909b2006-01-04 15:44:16 +00001100 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101
Russell King065909b2006-01-04 15:44:16 +00001102# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001103config ISA_DMA_API
1104 bool
Al Viro5cae8412005-05-04 05:39:22 +01001105
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106config PCI
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +04001107 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
Linus Torvalds1da177e2005-04-16 15:20:36 -07001108 help
1109 Find out whether you have a PCI motherboard. PCI is the name of a
1110 bus system, i.e. the way the CPU talks to the other stuff inside
1111 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1112 VESA. If you have PCI, say Y, otherwise N.
1113
Anton Vorontsov52882172010-04-19 13:20:49 +01001114config PCI_DOMAINS
1115 bool
1116 depends on PCI
1117
Matthew Wilcox36e23592007-07-10 10:54:40 -06001118config PCI_SYSCALL
1119 def_bool PCI
1120
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121# Select the host bridge type
1122config PCI_HOST_VIA82C505
1123 bool
1124 depends on PCI && ARCH_SHARK
1125 default y
1126
Mike Rapoporta0113a92007-11-25 08:55:34 +01001127config PCI_HOST_ITE8152
1128 bool
1129 depends on PCI && MACH_ARMCORE
1130 default y
1131 select DMABOUNCE
1132
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133source "drivers/pci/Kconfig"
1134
1135source "drivers/pcmcia/Kconfig"
1136
1137endmenu
1138
1139menu "Kernel Features"
1140
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001141source "kernel/time/Kconfig"
1142
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143config SMP
1144 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell King42578c82009-06-11 15:35:00 +01001145 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
Russell King59ac59f2010-02-11 21:56:07 +00001146 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
Russell King0b019a42010-08-10 23:17:52 +01001147 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
Russell Kingbc282482009-05-17 18:58:34 +01001148 depends on GENERIC_CLOCKEVENTS
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001149 select USE_GENERIC_SMP_HELPERS
Russell King0b019a42010-08-10 23:17:52 +01001150 select HAVE_ARM_SCU if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 ||\
1151 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 help
1153 This enables support for systems with more than one CPU. If you have
1154 a system with only one CPU, like most personal computers, say N. If
1155 you have a system with more than one CPU, say Y.
1156
1157 If you say N here, the kernel will run on single and multiprocessor
1158 machines, but will use only one CPU of a multiprocessor machine. If
1159 you say Y here, the kernel will run on many, but not all, single
1160 processor machines. On a single processor machine, the kernel will
1161 run faster if you say N here.
1162
Adrian Bunk03502fa2008-02-03 15:50:21 +02001163 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1165 <http://www.linuxdoc.org/docs.html#howto>.
1166
1167 If you don't know what to do here, say N.
1168
Russell Kinga8cbcd92009-05-16 11:51:14 +01001169config HAVE_ARM_SCU
1170 bool
1171 depends on SMP
1172 help
1173 This option enables support for the ARM system coherency unit
1174
Russell Kingf32f4ce2009-05-16 12:14:21 +01001175config HAVE_ARM_TWD
1176 bool
1177 depends on SMP
1178 help
1179 This options enables support for the ARM timer and watchdog unit
1180
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001181choice
1182 prompt "Memory split"
1183 default VMSPLIT_3G
1184 help
1185 Select the desired split between kernel and user memory.
1186
1187 If you are not absolutely sure what you are doing, leave this
1188 option alone!
1189
1190 config VMSPLIT_3G
1191 bool "3G/1G user/kernel split"
1192 config VMSPLIT_2G
1193 bool "2G/2G user/kernel split"
1194 config VMSPLIT_1G
1195 bool "1G/3G user/kernel split"
1196endchoice
1197
1198config PAGE_OFFSET
1199 hex
1200 default 0x40000000 if VMSPLIT_1G
1201 default 0x80000000 if VMSPLIT_2G
1202 default 0xC0000000
1203
Linus Torvalds1da177e2005-04-16 15:20:36 -07001204config NR_CPUS
1205 int "Maximum number of CPUs (2-32)"
1206 range 2 32
1207 depends on SMP
1208 default "4"
1209
Russell Kinga054a812005-11-02 22:24:33 +00001210config HOTPLUG_CPU
1211 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1212 depends on SMP && HOTPLUG && EXPERIMENTAL
1213 help
1214 Say Y here to experiment with turning CPUs off and on. CPUs
1215 can be controlled through /sys/devices/system/cpu.
1216
Russell King37ee16a2005-11-08 19:08:05 +00001217config LOCAL_TIMERS
1218 bool "Use local timer interrupts"
Russell King42578c82009-06-11 15:35:00 +01001219 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
Will Deaconbde28b82010-07-09 13:52:09 +01001220 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
Russell King0b019a42010-08-10 23:17:52 +01001221 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
Russell King37ee16a2005-11-08 19:08:05 +00001222 default y
Russell King0b019a42010-08-10 23:17:52 +01001223 select HAVE_ARM_TWD if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 || \
1224 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS
Russell King37ee16a2005-11-08 19:08:05 +00001225 help
1226 Enable support for local timers on SMP platforms, rather then the
1227 legacy IPI broadcast method. Local timers allows the system
1228 accounting to be spread across the timer interval, preventing a
1229 "thundering herd" at every timer tick.
1230
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001231source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232
Russell Kingf8065812006-03-02 22:41:59 +00001233config HZ
1234 int
Russell King21924822010-08-09 14:07:19 +01001235 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || \
1236 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
Russell Kingbfe65702006-03-04 11:01:53 +00001237 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001238 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001239 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001240 default 100
1241
Catalin Marinas16c79652009-07-24 12:33:02 +01001242config THUMB2_KERNEL
1243 bool "Compile the kernel in Thumb-2 mode"
1244 depends on CPU_V7 && EXPERIMENTAL
1245 select AEABI
1246 select ARM_ASM_UNIFIED
1247 help
1248 By enabling this option, the kernel will be compiled in
1249 Thumb-2 mode. A compiler/assembler that understand the unified
1250 ARM-Thumb syntax is needed.
1251
1252 If unsure, say N.
1253
Catalin Marinas0becb082009-07-24 12:32:53 +01001254config ARM_ASM_UNIFIED
1255 bool
1256
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001257config AEABI
1258 bool "Use the ARM EABI to compile the kernel"
1259 help
1260 This option allows for the kernel to be compiled using the latest
1261 ARM ABI (aka EABI). This is only useful if you are using a user
1262 space environment that is also compiled with EABI.
1263
1264 Since there are major incompatibilities between the legacy ABI and
1265 EABI, especially with regard to structure member alignment, this
1266 option also changes the kernel syscall calling convention to
1267 disambiguate both ABIs and allow for backward compatibility support
1268 (selected with CONFIG_OABI_COMPAT).
1269
1270 To use this you need GCC version 4.0.0 or later.
1271
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001272config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001273 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +00001274 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001275 default y
1276 help
1277 This option preserves the old syscall interface along with the
1278 new (ARM EABI) one. It also provides a compatibility layer to
1279 intercept syscalls that have structure arguments which layout
1280 in memory differs between the legacy ABI and the new ARM EABI
1281 (only for non "thumb" binaries). This option adds a tiny
1282 overhead to all syscalls and produces a slightly larger kernel.
1283 If you know you'll be using only pure EABI user space then you
1284 can say N here. If this option is not selected and you attempt
1285 to execute a legacy ABI binary then the result will be
1286 UNPREDICTABLE (in fact it can be predicted that it won't work
1287 at all). If in doubt say Y.
1288
Mel Gormaneb335752009-05-13 17:34:48 +01001289config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001290 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001291
Russell King05944d72006-11-30 20:43:51 +00001292config ARCH_SPARSEMEM_ENABLE
1293 bool
1294
Russell King07a2f732008-10-01 21:39:58 +01001295config ARCH_SPARSEMEM_DEFAULT
1296 def_bool ARCH_SPARSEMEM_ENABLE
1297
Russell King05944d72006-11-30 20:43:51 +00001298config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001299 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001300
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001301config HIGHMEM
1302 bool "High Memory Support (EXPERIMENTAL)"
1303 depends on MMU && EXPERIMENTAL
1304 help
1305 The address space of ARM processors is only 4 Gigabytes large
1306 and it has to accommodate user address space, kernel address
1307 space as well as some memory mapped IO. That means that, if you
1308 have a large amount of physical memory and/or IO, not all of the
1309 memory can be "permanently mapped" by the kernel. The physical
1310 memory that is not permanently mapped is called "high memory".
1311
1312 Depending on the selected kernel/user memory split, minimum
1313 vmalloc space and actual amount of RAM, you may not need this
1314 option which should result in a slightly faster kernel.
1315
1316 If unsure, say n.
1317
Russell King65cec8e2009-08-17 20:02:06 +01001318config HIGHPTE
1319 bool "Allocate 2nd-level pagetables from highmem"
1320 depends on HIGHMEM
1321 depends on !OUTER_CACHE
1322
Jamie Iles1b8873a2010-02-02 20:25:44 +01001323config HW_PERF_EVENTS
1324 bool "Enable hardware performance counter support for perf events"
Will Deaconfe166142010-04-30 11:37:51 +01001325 depends on PERF_EVENTS && CPU_HAS_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001326 default y
1327 help
1328 Enable hardware performance counter support for perf events. If
1329 disabled, perf events will use software events only.
1330
eric miao354e6f72010-06-25 09:46:09 +01001331config SPARSE_IRQ
eric miaoc1ba6ba2010-07-22 09:55:53 +01001332 def_bool n
eric miao354e6f72010-06-25 09:46:09 +01001333 help
1334 This enables support for sparse irqs. This is useful in general
1335 as most CPUs have a fairly sparse array of IRQ vectors, which
1336 the irq_desc then maps directly on to. Systems with a high
1337 number of off-chip IRQs will want to treat this as
1338 experimental until they have been independently verified.
1339
Dave Hansen3f22ab22005-06-23 00:07:43 -07001340source "mm/Kconfig"
1341
Magnus Dammc1b2d972010-07-05 10:00:11 +01001342config FORCE_MAX_ZONEORDER
1343 int "Maximum zone order" if ARCH_SHMOBILE
1344 range 11 64 if ARCH_SHMOBILE
1345 default "9" if SA1111
1346 default "11"
1347 help
1348 The kernel memory allocator divides physically contiguous memory
1349 blocks into "zones", where each zone is a power of two number of
1350 pages. This option selects the largest power of two that the kernel
1351 keeps in the memory allocator. If you need to allocate very large
1352 blocks of physically contiguous memory, then you may need to
1353 increase this value.
1354
1355 This config option is actually maximum order plus one. For example,
1356 a value of 11 means that the largest free memory block is 2^10 pages.
1357
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358config LEDS
1359 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001360 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001361 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1363 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001364 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001365 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042f2009-05-30 13:56:13 +01001366 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367 help
1368 If you say Y here, the LEDs on your machine will be used
1369 to provide useful information about your current system status.
1370
1371 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1372 be able to select which LEDs are active using the options below. If
1373 you are compiling a kernel for the EBSA-110 or the LART however, the
1374 red LED will simply flash regularly to indicate that the system is
1375 still functional. It is safe to say Y here if you have a CATS
1376 system, but the driver will do nothing.
1377
1378config LEDS_TIMER
1379 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001380 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1381 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001382 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001383 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001384 default y if ARCH_EBSA110
1385 help
1386 If you say Y here, one of the system LEDs (the green one on the
1387 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1388 will flash regularly to indicate that the system is still
1389 operational. This is mainly useful to kernel hackers who are
1390 debugging unstable kernels.
1391
1392 The LART uses the same LED for both Timer LED and CPU usage LED
1393 functions. You may choose to use both, but the Timer LED function
1394 will overrule the CPU usage LED.
1395
1396config LEDS_CPU
1397 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001398 !ARCH_OMAP) \
1399 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1400 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401 depends on LEDS
1402 help
1403 If you say Y here, the red LED will be used to give a good real
1404 time indication of CPU usage, by lighting whenever the idle task
1405 is not currently executing.
1406
1407 The LART uses the same LED for both Timer LED and CPU usage LED
1408 functions. You may choose to use both, but the Timer LED function
1409 will overrule the CPU usage LED.
1410
1411config ALIGNMENT_TRAP
1412 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001413 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001415 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001417 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1419 address divisible by 4. On 32-bit ARM processors, these non-aligned
1420 fetch/store instructions will be emulated in software if you say
1421 here, which has a severe performance impact. This is necessary for
1422 correct operation of some network protocols. With an IP-only
1423 configuration it is safe to say N, otherwise say Y.
1424
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001425config UACCESS_WITH_MEMCPY
1426 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1427 depends on MMU && EXPERIMENTAL
1428 default y if CPU_FEROCEON
1429 help
1430 Implement faster copy_to_user and clear_user methods for CPU
1431 cores where a 8-word STM instruction give significantly higher
1432 memory write throughput than a sequence of individual 32bit stores.
1433
1434 A possible side effect is a slight increase in scheduling latency
1435 between threads sharing the same address space if they invoke
1436 such copy operations with large buffers.
1437
1438 However, if the CPU data cache is using a write-allocate mode,
1439 this option is unlikely to provide any performance gain.
1440
Nicolas Pitrec743f382010-05-24 23:55:42 -04001441config CC_STACKPROTECTOR
1442 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1443 help
1444 This option turns on the -fstack-protector GCC feature. This
1445 feature puts, at the beginning of functions, a canary value on
1446 the stack just before the return address, and validates
1447 the value just before actually returning. Stack based buffer
1448 overflows (that need to overwrite this return address) now also
1449 overwrite the canary, which gets detected and the attack is then
1450 neutralized via a kernel panic.
1451 This feature requires gcc version 4.2 or above.
1452
Uwe Kleine-König73a65b32010-01-19 10:13:14 +01001453config DEPRECATED_PARAM_STRUCT
1454 bool "Provide old way to pass kernel parameters"
1455 help
1456 This was deprecated in 2001 and announced to live on for 5 years.
1457 Some old boot loaders still use this way.
1458
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459endmenu
1460
1461menu "Boot options"
1462
1463# Compressed boot loader in ROM. Yes, we really want to ask about
1464# TEXT and BSS so we preserve their values in the config files.
1465config ZBOOT_ROM_TEXT
1466 hex "Compressed ROM boot loader base address"
1467 default "0"
1468 help
1469 The physical address at which the ROM-able zImage is to be
1470 placed in the target. Platforms which normally make use of
1471 ROM-able zImage formats normally set this to a suitable
1472 value in their defconfig file.
1473
1474 If ZBOOT_ROM is not enabled, this has no effect.
1475
1476config ZBOOT_ROM_BSS
1477 hex "Compressed ROM boot loader BSS address"
1478 default "0"
1479 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001480 The base address of an area of read/write memory in the target
1481 for the ROM-able zImage which must be available while the
1482 decompressor is running. It must be large enough to hold the
1483 entire decompressed kernel plus an additional 128 KiB.
1484 Platforms which normally make use of ROM-able zImage formats
1485 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486
1487 If ZBOOT_ROM is not enabled, this has no effect.
1488
1489config ZBOOT_ROM
1490 bool "Compressed boot loader in ROM/flash"
1491 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1492 help
1493 Say Y here if you intend to execute your compressed kernel image
1494 (zImage) directly from ROM or flash. If unsure, say N.
1495
1496config CMDLINE
1497 string "Default kernel command string"
1498 default ""
1499 help
1500 On some architectures (EBSA110 and CATS), there is currently no way
1501 for the boot loader to pass arguments to the kernel. For these
1502 architectures, you should supply some command-line options at build
1503 time by entering them here. As a minimum, you should specify the
1504 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1505
Alexander Holler92d20402010-02-16 19:04:53 +01001506config CMDLINE_FORCE
1507 bool "Always use the default kernel command string"
1508 depends on CMDLINE != ""
1509 help
1510 Always use the default kernel command string, even if the boot
1511 loader passes other arguments to the kernel.
1512 This is useful if you cannot or don't want to change the
1513 command-line options your boot loader passes to the kernel.
1514
1515 If unsure, say N.
1516
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517config XIP_KERNEL
1518 bool "Kernel Execute-In-Place from ROM"
1519 depends on !ZBOOT_ROM
1520 help
1521 Execute-In-Place allows the kernel to run from non-volatile storage
1522 directly addressable by the CPU, such as NOR flash. This saves RAM
1523 space since the text section of the kernel is not loaded from flash
1524 to RAM. Read-write sections, such as the data section and stack,
1525 are still copied to RAM. The XIP kernel is not compressed since
1526 it has to run directly from flash, so it will take more space to
1527 store it. The flash address used to link the kernel object files,
1528 and for storing it, is configuration dependent. Therefore, if you
1529 say Y here, you must know the proper physical address where to
1530 store the kernel image depending on your own flash memory usage.
1531
1532 Also note that the make target becomes "make xipImage" rather than
1533 "make zImage" or "make Image". The final kernel binary to put in
1534 ROM memory will be arch/arm/boot/xipImage.
1535
1536 If unsure, say N.
1537
1538config XIP_PHYS_ADDR
1539 hex "XIP Kernel Physical Location"
1540 depends on XIP_KERNEL
1541 default "0x00080000"
1542 help
1543 This is the physical address in your flash memory the kernel will
1544 be linked for and stored to. This address is dependent on your
1545 own flash usage.
1546
Richard Purdiec587e4a2007-02-06 21:29:00 +01001547config KEXEC
1548 bool "Kexec system call (EXPERIMENTAL)"
1549 depends on EXPERIMENTAL
1550 help
1551 kexec is a system call that implements the ability to shutdown your
1552 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001553 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001554 you can start any kernel with it, not just Linux.
1555
1556 It is an ongoing process to be certain the hardware in a machine
1557 is properly shutdown, so do not be surprised if this code does not
1558 initially work for you. It may help to enable device hotplugging
1559 support.
1560
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001561config ATAGS_PROC
1562 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01001563 depends on KEXEC
1564 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001565 help
1566 Should the atags used to boot the kernel be exported in an "atags"
1567 file in procfs. Useful with kexec.
1568
Eric Miaoe69edc792010-07-05 15:56:50 +02001569config AUTO_ZRELADDR
1570 bool "Auto calculation of the decompressed kernel image address"
1571 depends on !ZBOOT_ROM && !ARCH_U300
1572 help
1573 ZRELADDR is the physical address where the decompressed kernel
1574 image will be placed. If AUTO_ZRELADDR is selected, the address
1575 will be determined at run-time by masking the current IP with
1576 0xf8000000. This assumes the zImage being placed in the first 128MB
1577 from start of memory.
1578
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579endmenu
1580
Russell Kingac9d7ef2008-08-18 17:26:00 +01001581menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582
Ben Dooks89c52ed2009-07-30 23:23:24 +01001583if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07001584
1585source "drivers/cpufreq/Kconfig"
1586
Yong Shen64f102b2010-10-21 21:18:59 +08001587config CPU_FREQ_IMX
1588 tristate "CPUfreq driver for i.MX CPUs"
1589 depends on ARCH_MXC && CPU_FREQ
1590 help
1591 This enables the CPUfreq driver for i.MX CPUs.
1592
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593config CPU_FREQ_SA1100
1594 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595
1596config CPU_FREQ_SA1110
1597 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001598
1599config CPU_FREQ_INTEGRATOR
1600 tristate "CPUfreq driver for ARM Integrator CPUs"
1601 depends on ARCH_INTEGRATOR && CPU_FREQ
1602 default y
1603 help
1604 This enables the CPUfreq driver for ARM Integrator CPUs.
1605
1606 For details, take a look at <file:Documentation/cpu-freq>.
1607
1608 If in doubt, say Y.
1609
Russell King9e2697f2007-12-14 13:30:14 +00001610config CPU_FREQ_PXA
1611 bool
1612 depends on CPU_FREQ && ARCH_PXA && PXA25x
1613 default y
1614 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1615
Mark Brownb3748dd2009-06-15 11:23:20 +01001616config CPU_FREQ_S3C64XX
1617 bool "CPUfreq support for Samsung S3C64XX CPUs"
1618 depends on CPU_FREQ && CPU_S3C6410
1619
Ben Dooks9d56c022009-07-30 23:23:25 +01001620config CPU_FREQ_S3C
1621 bool
1622 help
1623 Internal configuration node for common cpufreq on Samsung SoC
1624
1625config CPU_FREQ_S3C24XX
1626 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1627 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1628 select CPU_FREQ_S3C
1629 help
1630 This enables the CPUfreq driver for the Samsung S3C24XX family
1631 of CPUs.
1632
1633 For details, take a look at <file:Documentation/cpu-freq>.
1634
1635 If in doubt, say N.
1636
1637config CPU_FREQ_S3C24XX_PLL
1638 bool "Support CPUfreq changing of PLL frequency"
1639 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1640 help
1641 Compile in support for changing the PLL frequency from the
1642 S3C24XX series CPUfreq driver. The PLL takes time to settle
1643 after a frequency change, so by default it is not enabled.
1644
1645 This also means that the PLL tables for the selected CPU(s) will
1646 be built which may increase the size of the kernel image.
1647
1648config CPU_FREQ_S3C24XX_DEBUG
1649 bool "Debug CPUfreq Samsung driver core"
1650 depends on CPU_FREQ_S3C24XX
1651 help
1652 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1653
1654config CPU_FREQ_S3C24XX_IODEBUG
1655 bool "Debug CPUfreq Samsung driver IO timing"
1656 depends on CPU_FREQ_S3C24XX
1657 help
1658 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1659
Ben Dookse6d197a2009-07-30 23:23:42 +01001660config CPU_FREQ_S3C24XX_DEBUGFS
1661 bool "Export debugfs for CPUFreq"
1662 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1663 help
1664 Export status information via debugfs.
1665
Linus Torvalds1da177e2005-04-16 15:20:36 -07001666endif
1667
Russell Kingac9d7ef2008-08-18 17:26:00 +01001668source "drivers/cpuidle/Kconfig"
1669
1670endmenu
1671
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672menu "Floating point emulation"
1673
1674comment "At least one emulation must be selected"
1675
1676config FPE_NWFPE
1677 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001678 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -07001679 ---help---
1680 Say Y to include the NWFPE floating point emulator in the kernel.
1681 This is necessary to run most binaries. Linux does not currently
1682 support floating point hardware so you need to say Y here even if
1683 your machine has an FPA or floating point co-processor podule.
1684
1685 You may say N here if you are going to load the Acorn FPEmulator
1686 early in the bootup.
1687
1688config FPE_NWFPE_XP
1689 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001690 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691 help
1692 Say Y to include 80-bit support in the kernel floating-point
1693 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1694 Note that gcc does not generate 80-bit operations by default,
1695 so in most cases this option only enlarges the size of the
1696 floating point emulator without any good reason.
1697
1698 You almost surely want to say N here.
1699
1700config FPE_FASTFPE
1701 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001702 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703 ---help---
1704 Say Y here to include the FAST floating point emulator in the kernel.
1705 This is an experimental much faster emulator which now also has full
1706 precision for the mantissa. It does not support any exceptions.
1707 It is very simple, and approximately 3-6 times faster than NWFPE.
1708
1709 It should be sufficient for most programs. It may be not suitable
1710 for scientific calculations, but you have to check this for yourself.
1711 If you do not feel you need a faster FP emulation you should better
1712 choose NWFPE.
1713
1714config VFP
1715 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001716 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717 help
1718 Say Y to include VFP support code in the kernel. This is needed
1719 if your hardware includes a VFP unit.
1720
1721 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1722 release notes and additional status information.
1723
1724 Say N if your target does not have VFP hardware.
1725
Catalin Marinas25ebee02007-09-25 15:22:24 +01001726config VFPv3
1727 bool
1728 depends on VFP
1729 default y if CPU_V7
1730
Catalin Marinasb5872db2008-01-10 19:16:17 +01001731config NEON
1732 bool "Advanced SIMD (NEON) Extension support"
1733 depends on VFPv3 && CPU_V7
1734 help
1735 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1736 Extension.
1737
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738endmenu
1739
1740menu "Userspace binary formats"
1741
1742source "fs/Kconfig.binfmt"
1743
1744config ARTHUR
1745 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001746 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747 help
1748 Say Y here to include the kernel code necessary if you want to run
1749 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1750 experimental; if this sounds frightening, say N and sleep in peace.
1751 You can also say M here to compile this support as a module (which
1752 will be called arthur).
1753
1754endmenu
1755
1756menu "Power management options"
1757
Russell Kingeceab4a2005-11-15 11:31:41 +00001758source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759
Johannes Bergf4cb5702007-12-08 02:14:00 +01001760config ARCH_SUSPEND_POSSIBLE
1761 def_bool y
1762
Linus Torvalds1da177e2005-04-16 15:20:36 -07001763endmenu
1764
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001765source "net/Kconfig"
1766
Uwe Kleine-Königac251502009-08-13 21:09:21 +02001767source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001768
1769source "fs/Kconfig"
1770
Linus Torvalds1da177e2005-04-16 15:20:36 -07001771source "arch/arm/Kconfig.debug"
1772
1773source "security/Kconfig"
1774
1775source "crypto/Kconfig"
1776
1777source "lib/Kconfig"