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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
David Woodhousee17c6d52008-06-17 12:19:34 +01004 select HAVE_AOUT
Adrian Bunk2064c942008-04-28 23:44:43 +02005 select HAVE_IDE
Russell King2778f622010-07-09 16:27:52 +01006 select HAVE_MEMBLOCK
Alessandro Zummo12b824f2006-03-27 01:16:35 -08007 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +00008 select SYS_SUPPORTS_APM_EMULATION
Will Deacond4c7b1f2010-11-04 18:24:22 +01009 select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
Will Deaconfe166142010-04-30 11:37:51 +010010 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jason Wessel5cbad0e2008-02-20 13:33:40 -060011 select HAVE_ARCH_KGDB
Dave Martined7c84d2010-11-29 19:43:29 +010012 select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080013 select HAVE_KRETPROBES if (HAVE_KPROBES)
Steven Rostedt606576c2008-10-06 19:06:12 -040014 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
Rabin Vincent80be7a72010-08-10 19:58:17 +010015 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
16 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Dmitry Baryshkov1fe53262008-07-18 13:30:14 +040017 select HAVE_GENERIC_DMA_COHERENT
Albin Tonnerree7db7b42010-01-08 14:42:43 -080018 select HAVE_KERNEL_GZIP
19 select HAVE_KERNEL_LZO
Albin Tonnerre6e8699f2010-04-03 11:40:28 +010020 select HAVE_KERNEL_LZMA
Peter Zijlstrae360adb2010-10-14 14:01:34 +080021 select HAVE_IRQ_WORK
Jamie Iles7ada1892010-02-02 20:24:58 +010022 select HAVE_PERF_EVENTS
23 select PERF_USE_VMALLOC
Will Deacone513f8b2010-06-25 12:24:53 +010024 select HAVE_REGS_AND_STACK_ACCESS_API
Will Deacon19852e52010-09-03 10:44:33 +010025 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 help
27 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000028 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070029 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000030 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 Europe. There is an ARM Linux project with a web page at
32 <http://www.arm.linux.org.uk/>.
33
Russell King1a189b92008-04-13 21:41:55 +010034config HAVE_PWM
35 bool
36
Ralf Baechle75e71532007-02-09 17:08:58 +000037config SYS_SUPPORTS_APM_EMULATION
38 bool
39
David Brownell0a938b92007-03-05 00:30:18 -080040config GENERIC_GPIO
41 bool
David Brownell0a938b92007-03-05 00:30:18 -080042
John Stultz5cfc8ee2010-03-24 00:22:36 +000043config ARCH_USES_GETTIMEOFFSET
44 bool
45 default n
Kevin Hilman746140c2006-09-22 00:16:30 +010046
Kevin Hilman0567a0c2007-03-13 20:29:24 +010047config GENERIC_CLOCKEVENTS
48 bool
Kevin Hilman0567a0c2007-03-13 20:29:24 +010049
Catalin Marinasa8655e82008-02-04 17:30:57 +010050config GENERIC_CLOCKEVENTS_BROADCAST
51 bool
52 depends on GENERIC_CLOCKEVENTS
Russell King5388a6b2010-07-26 13:19:43 +010053 default y if SMP
Catalin Marinasa8655e82008-02-04 17:30:57 +010054
Linus Walleijbc581772009-09-15 17:30:37 +010055config HAVE_TCM
56 bool
57 select GENERIC_ALLOCATOR
58
Russell Kinge119bff2010-01-10 17:23:29 +000059config HAVE_PROC_CPU
60 bool
61
Al Viro5ea81762007-02-11 15:41:31 +000062config NO_IOPORT
63 bool
Al Viro5ea81762007-02-11 15:41:31 +000064
Linus Torvalds1da177e2005-04-16 15:20:36 -070065config EISA
66 bool
67 ---help---
68 The Extended Industry Standard Architecture (EISA) bus was
69 developed as an open alternative to the IBM MicroChannel bus.
70
71 The EISA bus provided some of the features of the IBM MicroChannel
72 bus while maintaining backward compatibility with cards made for
73 the older ISA bus. The EISA bus saw limited use between 1988 and
74 1995 when it was made obsolete by the PCI bus.
75
76 Say Y here if you are building a kernel for an EISA-based machine.
77
78 Otherwise, say N.
79
80config SBUS
81 bool
82
83config MCA
84 bool
85 help
86 MicroChannel Architecture is found in some IBM PS/2 machines and
87 laptops. It is a bus system similar to PCI or ISA. See
88 <file:Documentation/mca.txt> (and especially the web page given
89 there) before attempting to build an MCA bus kernel.
90
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010091config GENERIC_HARDIRQS
92 bool
93 default y
94
Russell Kingf16fb1e2007-04-28 09:59:37 +010095config STACKTRACE_SUPPORT
96 bool
97 default y
98
Nicolas Pitref76e9152008-04-24 01:31:46 -040099config HAVE_LATENCYTOP_SUPPORT
100 bool
101 depends on !SMP
102 default y
103
Russell Kingf16fb1e2007-04-28 09:59:37 +0100104config LOCKDEP_SUPPORT
105 bool
106 default y
107
Russell King7ad1bcb2006-08-27 12:07:02 +0100108config TRACE_IRQFLAGS_SUPPORT
109 bool
110 default y
111
Thomas Gleixner4a2581a2006-07-01 22:30:09 +0100112config HARDIRQS_SW_RESEND
113 bool
114 default y
115
116config GENERIC_IRQ_PROBE
117 bool
118 default y
119
Nick Piggin95c354f2008-01-30 13:31:20 +0100120config GENERIC_LOCKBREAK
121 bool
122 default y
123 depends on SMP && PREEMPT
124
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125config RWSEM_GENERIC_SPINLOCK
126 bool
127 default y
128
129config RWSEM_XCHGADD_ALGORITHM
130 bool
131
David Howellsf0d1b0b2006-12-08 02:37:49 -0800132config ARCH_HAS_ILOG2_U32
133 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800134
135config ARCH_HAS_ILOG2_U64
136 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800137
Ben Dooks89c52ed2009-07-30 23:23:24 +0100138config ARCH_HAS_CPUFREQ
139 bool
140 help
141 Internal node to signify that the ARCH has CPUFREQ support
142 and that the relevant menu configurations are displayed for
143 it.
144
Kevin Hilmanc7b0aff2010-10-01 22:13:47 +0100145config ARCH_HAS_CPU_IDLE_WAIT
146 def_bool y
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
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100274 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100275 This enables support for systems based on the Atmel AT91RM9200,
276 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100277
Russell Kingccf50e22010-03-15 19:03:06 +0000278config ARCH_BCMRING
279 bool "Broadcom BCMRING"
280 depends on MMU
281 select CPU_V6
282 select ARM_AMBA
283 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000284 select GENERIC_CLOCKEVENTS
285 select ARCH_WANT_OPTIONAL_GPIOLIB
286 help
287 Support for Broadcom's BCMRing platform.
288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100290 bool "Cirrus Logic CLPS711x/EP721x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000291 select CPU_ARM720T
John Stultz5cfc8ee2010-03-24 00:22:36 +0000292 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000293 help
294 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300296config ARCH_CNS3XXX
297 bool "Cavium Networks CNS3XXX family"
298 select CPU_V6
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300299 select GENERIC_CLOCKEVENTS
300 select ARM_GIC
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +0400301 select PCI_DOMAINS if PCI
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300302 help
303 Support for Cavium Networks CNS3XXX platform.
304
Russell King788c9702009-04-26 14:21:59 +0100305config ARCH_GEMINI
306 bool "Cortina Systems Gemini"
307 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100308 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000309 select ARCH_USES_GETTIMEOFFSET
Russell King788c9702009-04-26 14:21:59 +0100310 help
311 Support for the Cortina Systems Gemini family SoCs
312
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313config ARCH_EBSA110
314 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000315 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100316 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000317 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000318 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 help
320 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000321 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 Ethernet interface, two PCMCIA sockets, two serial ports and a
323 parallel port.
324
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000325config ARCH_EP93XX
326 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000327 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000328 select ARM_AMBA
329 select ARM_VIC
Russell Kingae696fd2008-11-30 17:11:49 +0000330 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700331 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100332 select ARCH_HAS_HOLES_MEMORYMODEL
John Stultz5cfc8ee2010-03-24 00:22:36 +0000333 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000334 help
335 This enables support for the Cirrus EP93xx series of CPUs.
336
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337config ARCH_FOOTBRIDGE
338 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000339 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 select FOOTBRIDGE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000341 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000342 help
343 Support for systems based on the DC21285 companion chip
344 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
Russell King788c9702009-04-26 14:21:59 +0100346config ARCH_MXC
347 bool "Freescale MXC/iMX-based"
Russell King788c9702009-04-26 14:21:59 +0100348 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100349 select ARCH_REQUIRE_GPIOLIB
Uwe Kleine-König03e09cd2010-02-15 17:10:42 +0100350 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100351 help
352 Support for Freescale MXC/iMX-based family of processors
353
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800354config ARCH_MXS
355 bool "Freescale MXS-based"
356 select GENERIC_CLOCKEVENTS
357 select ARCH_REQUIRE_GPIOLIB
358 select COMMON_CLKDEV
359 help
360 Support for Freescale MXS-based family of processors
361
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100362config ARCH_STMP3XXX
363 bool "Freescale STMP3xxx"
364 select CPU_ARM926T
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100365 select COMMON_CLKDEV
366 select ARCH_REQUIRE_GPIOLIB
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100367 select GENERIC_CLOCKEVENTS
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100368 select USB_ARCH_HAS_EHCI
369 help
370 Support for systems based on the Freescale 3xxx CPUs.
371
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100372config ARCH_NETX
373 bool "Hilscher NetX based"
Russell Kingc7508152008-10-26 10:55:14 +0000374 select CPU_ARM926T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100375 select ARM_VIC
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100376 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000377 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100378 This enables support for systems based on the Hilscher NetX Soc
379
380config ARCH_H720X
381 bool "Hynix HMS720x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000382 select CPU_ARM720T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100383 select ISA_DMA_API
John Stultz5cfc8ee2010-03-24 00:22:36 +0000384 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100385 help
386 This enables support for systems based on the Hynix HMS720x
387
Russell King3b938be2007-05-12 11:25:44 +0100388config ARCH_IOP13XX
389 bool "IOP13xx-based"
390 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000391 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100392 select PLAT_IOP
393 select PCI
394 select ARCH_SUPPORTS_MSI
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +0100395 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100396 help
397 Support for Intel's IOP13XX (XScale) family of processors.
398
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100399config ARCH_IOP32X
400 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100401 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000402 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100403 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100404 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100405 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000406 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100407 Support for Intel's 80219 and IOP32X (XScale) family of
408 processors.
409
410config ARCH_IOP33X
411 bool "IOP33x-based"
412 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000413 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100414 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100415 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100416 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100417 help
418 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419
Russell King3b938be2007-05-12 11:25:44 +0100420config ARCH_IXP23XX
421 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100422 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000423 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100424 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000425 select ARCH_USES_GETTIMEOFFSET
Dan Williams285f5fa2006-12-07 02:59:39 +0100426 help
Russell King3b938be2007-05-12 11:25:44 +0100427 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
429config ARCH_IXP2000
430 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100431 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000432 select CPU_XSCALE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100433 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000434 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000435 help
436 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Russell King3b938be2007-05-12 11:25:44 +0100438config ARCH_IXP4XX
439 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100440 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000441 select CPU_XSCALE
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100442 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100443 select GENERIC_CLOCKEVENTS
Russell King485bdde2008-10-17 14:00:43 +0100444 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100445 help
Russell King3b938be2007-05-12 11:25:44 +0100446 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100447
Saeed Bisharaedabd382009-08-06 15:12:43 +0300448config ARCH_DOVE
449 bool "Marvell Dove"
450 select PCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300451 select ARCH_REQUIRE_GPIOLIB
Saeed Bisharaedabd382009-08-06 15:12:43 +0300452 select GENERIC_CLOCKEVENTS
453 select PLAT_ORION
454 help
455 Support for the Marvell Dove SoC 88AP510
456
Saeed Bishara651c74c2008-06-22 22:45:06 +0200457config ARCH_KIRKWOOD
458 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000459 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200460 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700461 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200462 select GENERIC_CLOCKEVENTS
463 select PLAT_ORION
464 help
465 Support for the following Marvell Kirkwood series SoCs:
466 88F6180, 88F6192 and 88F6281.
467
Russell King788c9702009-04-26 14:21:59 +0100468config ARCH_LOKI
469 bool "Marvell Loki (88RC8480)"
470 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100471 select GENERIC_CLOCKEVENTS
472 select PLAT_ORION
473 help
474 Support for the Marvell Loki (88RC8480) SoC.
475
Kevin Wells40805942010-07-27 08:49:04 -0700476config ARCH_LPC32XX
477 bool "NXP LPC32XX"
478 select CPU_ARM926T
479 select ARCH_REQUIRE_GPIOLIB
480 select HAVE_IDE
481 select ARM_AMBA
482 select USB_ARCH_HAS_OHCI
483 select COMMON_CLKDEV
484 select GENERIC_TIME
485 select GENERIC_CLOCKEVENTS
486 help
487 Support for the NXP LPC32XX family of processors
488
Russell King788c9702009-04-26 14:21:59 +0100489config ARCH_MV78XX0
490 bool "Marvell MV78xx0"
491 select CPU_FEROCEON
492 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700493 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100494 select GENERIC_CLOCKEVENTS
495 select PLAT_ORION
496 help
497 Support for the following Marvell MV78xx0 series SoCs:
498 MV781x0, MV782x0.
499
500config ARCH_ORION5X
501 bool "Marvell Orion"
502 depends on MMU
503 select CPU_FEROCEON
504 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700505 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100506 select GENERIC_CLOCKEVENTS
507 select PLAT_ORION
508 help
509 Support for the following Marvell Orion 5x series SoCs:
510 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
511 Orion-2 (5281), Orion-1-90 (6183).
512
513config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500514 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100515 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100516 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100517 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100518 select GENERIC_CLOCKEVENTS
519 select TICK_ONESHOT
520 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400521 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100522 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500523 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100524
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100525config ARCH_KS8695
526 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000527 select CPU_ARM922T
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100528 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000529 select ARCH_USES_GETTIMEOFFSET
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100530 help
531 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
532 System-on-Chip devices.
533
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100534config ARCH_NS9XXX
535 bool "NetSilicon NS9xxx"
Russell Kingc7508152008-10-26 10:55:14 +0000536 select CPU_ARM926T
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100537 select GENERIC_GPIO
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100538 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700539 select HAVE_CLK
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100540 help
541 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
542 System.
543
544 <http://www.digi.com/products/microprocessors/index.jsp>
545
Russell King788c9702009-04-26 14:21:59 +0100546config ARCH_W90X900
547 bool "Nuvoton W90X900 CPU"
548 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100549 select ARCH_REQUIRE_GPIOLIB
wanzongshun0e4a34b2009-06-10 15:50:44 +0100550 select COMMON_CLKDEV
wanzongshun58b53692009-08-14 15:36:44 +0100551 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200552 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100553 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
554 At present, the w90x900 has been renamed nuc900, regarding
555 the ARM series product line, you can login the following
556 link address to know more.
557
558 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
559 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400560
wanzongshuna62e9032009-12-31 15:06:05 +0100561config ARCH_NUC93X
562 bool "Nuvoton NUC93X CPU"
563 select CPU_ARM926T
wanzongshuna62e9032009-12-31 15:06:05 +0100564 select COMMON_CLKDEV
565 help
566 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
567 low-power and high performance MPEG-4/JPEG multimedia controller chip.
568
Erik Gillingc5f80062010-01-21 16:53:02 -0800569config ARCH_TEGRA
570 bool "NVIDIA Tegra"
571 select GENERIC_TIME
572 select GENERIC_CLOCKEVENTS
573 select GENERIC_GPIO
574 select HAVE_CLK
Colin Crossd8611962010-01-28 16:40:29 -0800575 select COMMON_CLKDEV
Erik Gillingc5f80062010-01-21 16:53:02 -0800576 select ARCH_HAS_BARRIERS if CACHE_L2X0
Colin Cross7056d422010-04-22 20:30:13 -0700577 select ARCH_HAS_CPUFREQ
Erik Gillingc5f80062010-01-21 16:53:02 -0800578 help
579 This enables support for NVIDIA Tegra based systems (Tegra APX,
580 Tegra 6xx and Tegra 2 series).
581
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100582config ARCH_PNX4008
583 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000584 select CPU_ARM926T
Russell King6985a5a2009-11-20 10:32:41 +0000585 select COMMON_CLKDEV
John Stultz5cfc8ee2010-03-24 00:22:36 +0000586 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100587 help
588 This enables support for Philips PNX4008 mobile platform.
589
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700591 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100592 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500593 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100594 select ARCH_HAS_CPUFREQ
Russell King8c3abc72008-11-08 20:25:21 +0000595 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700596 select ARCH_REQUIRE_GPIOLIB
Eric Miao981d0f32007-07-24 01:22:43 +0100597 select GENERIC_CLOCKEVENTS
Russell Kinga88264c2007-11-12 22:45:16 +0000598 select TICK_ONESHOT
Eric Miaobd5ce432009-01-20 12:06:01 +0800599 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800600 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000601 help
eric miao2c8086a2007-09-11 19:13:17 -0700602 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603
Russell King788c9702009-04-26 14:21:59 +0100604config ARCH_MSM
605 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500606 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800607 select GENERIC_CLOCKEVENTS
Pavel Machek923a0812010-06-02 11:11:12 -0700608 select ARCH_REQUIRE_GPIOLIB
Eric Miao49cbe782009-01-20 14:15:18 +0800609 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800610 Support for Qualcomm MSM/QSD based systems. This runs on the
611 apps processor of the MSM/QSD and depends on a shared memory
612 interface to the modem processor which runs the baseband
613 stack and controls some vital subsystems
614 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800615
Magnus Dammc793c1b2010-02-05 11:14:49 +0000616config ARCH_SHMOBILE
617 bool "Renesas SH-Mobile"
618 help
619 Support for Renesas's SH-Mobile ARM platforms
620
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621config ARCH_RPC
622 bool "RiscPC"
623 select ARCH_ACORN
624 select FIQ
625 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100626 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100627 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000628 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000629 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100630 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000631 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 help
633 On the Acorn Risc-PC, Linux can support the internal IDE disk and
634 CD-ROM interface, serial and parallel port, and the floppy drive.
635
636config ARCH_SA1100
637 bool "SA1100-based"
Russell Kingc7508152008-10-26 10:55:14 +0000638 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100639 select ISA
Russell King05944d72006-11-30 20:43:51 +0000640 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500641 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100642 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000643 select CPU_FREQ
Russell King3e238be2008-04-14 23:03:10 +0100644 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700645 select HAVE_CLK
Russell King3e238be2008-04-14 23:03:10 +0100646 select TICK_ONESHOT
Michael Buesch7444a722008-07-25 01:46:11 -0700647 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000648 help
649 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650
651config ARCH_S3C2410
Ben Dooks63b1f512010-04-30 16:32:26 +0900652 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
David Brownell0a938b92007-03-05 00:30:18 -0800653 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100654 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700655 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000656 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900657 select HAVE_S3C2410_I2C if I2C
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 help
659 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
660 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000661 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Ben Dooks63b1f512010-04-30 16:32:26 +0900663 Note, the S3C2416 and the S3C2450 are so close that they even share
664 the same SoC ID code. This means that there is no seperate machine
665 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
666
Ben Dooksa08ab632008-10-21 14:06:39 +0100667config ARCH_S3C64XX
668 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000669 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900670 select CPU_V6
Ben Dooks89f0ce72010-01-26 15:49:15 +0900671 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100672 select HAVE_CLK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900673 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000674 select ARCH_USES_GETTIMEOFFSET
Ben Dooks89c52ed2009-07-30 23:23:24 +0100675 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900676 select ARCH_REQUIRE_GPIOLIB
677 select SAMSUNG_CLKSRC
678 select SAMSUNG_IRQ_VIC_TIMER
679 select SAMSUNG_IRQ_UART
680 select S3C_GPIO_TRACK
681 select S3C_GPIO_PULL_UPDOWN
682 select S3C_GPIO_CFG_S3C24XX
683 select S3C_GPIO_CFG_S3C64XX
684 select S3C_DEV_NAND
685 select USB_ARCH_HAS_OHCI
686 select SAMSUNG_GPIOLIB_4BIT
Kukjin Kim20676c12010-11-13 16:08:32 +0900687 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900688 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Ben Dooksa08ab632008-10-21 14:06:39 +0100689 help
690 Samsung S3C64XX series based systems
691
Kukjin Kim49b7a492010-09-07 15:47:18 +0900692config ARCH_S5P64X0
693 bool "Samsung S5P6440 S5P6450"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900694 select CPU_V6
695 select GENERIC_GPIO
696 select HAVE_CLK
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900697 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Ben Dooks925c68c2010-05-20 20:48:28 +0900698 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900699 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900700 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900701 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900702 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
703 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900704
Kukjin Kim550db7f2010-01-29 10:19:26 +0900705config ARCH_S5P6442
706 bool "Samsung S5P6442"
707 select CPU_V6
708 select GENERIC_GPIO
709 select HAVE_CLK
Ben Dooks925c68c2010-05-20 20:48:28 +0900710 select ARCH_USES_GETTIMEOFFSET
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900711 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim550db7f2010-01-29 10:19:26 +0900712 help
713 Samsung S5P6442 CPU based systems
714
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200715config ARCH_S5PC100
716 bool "Samsung S5PC100"
Byungho Min5a7652f2009-06-23 21:39:42 +0900717 select GENERIC_GPIO
718 select HAVE_CLK
719 select CPU_V7
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100720 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900721 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900722 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900723 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900724 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Byungho Min5a7652f2009-06-23 21:39:42 +0900725 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200726 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900727
Kukjin Kim170f4e42010-02-24 16:40:44 +0900728config ARCH_S5PV210
729 bool "Samsung S5PV210/S5PC110"
730 select CPU_V7
Kyungmin Parkeecb6a82010-09-29 21:29:27 +0900731 select ARCH_SPARSEMEM_ENABLE
Kukjin Kim170f4e42010-02-24 16:40:44 +0900732 select GENERIC_GPIO
733 select HAVE_CLK
734 select ARM_L1_CACHE_SHIFT_6
Jaecheol Leed8144ae2010-10-12 09:23:19 +0900735 select ARCH_HAS_CPUFREQ
Ben Dooks925c68c2010-05-20 20:48:28 +0900736 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900737 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900738 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900739 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim170f4e42010-02-24 16:40:44 +0900740 help
741 Samsung S5PV210/S5PC110 series based systems
742
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900743config ARCH_S5PV310
744 bool "Samsung S5PV310/S5PC210"
745 select CPU_V7
Kyungmin Parkf567fa62010-09-29 21:33:29 +0900746 select ARCH_SPARSEMEM_ENABLE
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900747 select GENERIC_GPIO
748 select HAVE_CLK
749 select GENERIC_CLOCKEVENTS
Kukjin Kim754961a2010-11-13 16:11:46 +0900750 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kim20676c12010-11-13 16:08:32 +0900751 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900752 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900753 help
754 Samsung S5PV310 series based systems
755
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756config ARCH_SHARK
757 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000758 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100759 select ISA
760 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100761 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100762 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000763 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000764 help
765 Support for the StrongARM based Digital DNARD machine, also known
766 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767
Hans J. Koch83ef3332010-09-17 18:13:56 +0200768config ARCH_TCC_926
769 bool "Telechips TCC ARM926-based systems"
770 select CPU_ARM926T
771 select HAVE_CLK
772 select COMMON_CLKDEV
773 select GENERIC_CLOCKEVENTS
774 help
775 Support for Telechips TCC ARM926-based systems.
776
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777config ARCH_LH7A40X
778 bool "Sharp LH7A40X"
Russell Kingc7508152008-10-26 10:55:14 +0000779 select CPU_ARM922T
Russell King4ba3f7c2008-10-01 21:38:23 +0100780 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
John Stultz5cfc8ee2010-03-24 00:22:36 +0000781 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 help
783 Say Y here for systems based on one of the Sharp LH7A40X
784 System on a Chip processors. These CPUs include an ARM922T
785 core with a wide array of integrated devices for
786 hand-held and low-power applications.
787
Linus Walleijd98aac72009-04-27 10:21:46 +0100788config ARCH_U300
789 bool "ST-Ericsson U300 Series"
790 depends on MMU
791 select CPU_ARM926T
Linus Walleijbc581772009-09-15 17:30:37 +0100792 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100793 select ARM_AMBA
794 select ARM_VIC
Linus Walleijd98aac72009-04-27 10:21:46 +0100795 select GENERIC_CLOCKEVENTS
Linus Walleijd98aac72009-04-27 10:21:46 +0100796 select COMMON_CLKDEV
797 select GENERIC_GPIO
798 help
799 Support for ST-Ericsson U300 series mobile platforms.
800
Russell Kingccf50e22010-03-15 19:03:06 +0000801config ARCH_U8500
802 bool "ST-Ericsson U8500 Series"
803 select CPU_V7
804 select ARM_AMBA
Russell Kingccf50e22010-03-15 19:03:06 +0000805 select GENERIC_CLOCKEVENTS
806 select COMMON_CLKDEV
Rabin Vincent94bdc0e2010-03-03 04:54:37 +0100807 select ARCH_REQUIRE_GPIOLIB
Russell Kingccf50e22010-03-15 19:03:06 +0000808 help
809 Support for ST-Ericsson's Ux500 architecture
810
811config ARCH_NOMADIK
812 bool "STMicroelectronics Nomadik"
813 select ARM_AMBA
814 select ARM_VIC
815 select CPU_ARM926T
Russell Kingccf50e22010-03-15 19:03:06 +0000816 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000817 select GENERIC_CLOCKEVENTS
Russell Kingccf50e22010-03-15 19:03:06 +0000818 select ARCH_REQUIRE_GPIOLIB
819 help
820 Support for the Nomadik platform by ST-Ericsson
821
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100822config ARCH_DAVINCI
823 bool "TI DaVinci"
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100824 select GENERIC_CLOCKEVENTS
David Brownelldce11152008-09-07 23:41:04 -0700825 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100826 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700827 select HAVE_IDE
Kevin Hilmanc5b736d2009-03-20 17:29:01 -0700828 select COMMON_CLKDEV
David Brownell20e99692009-05-07 09:31:42 -0700829 select GENERIC_ALLOCATOR
Sekhar Noriae88e052009-11-19 15:34:01 +0530830 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100831 help
832 Support for TI's DaVinci platform.
833
Russell King3b938be2007-05-12 11:25:44 +0100834config ARCH_OMAP
835 bool "TI OMAP"
David Brownell9483a572008-07-23 21:26:48 -0700836 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700837 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100838 select ARCH_HAS_CPUFREQ
Kevin Hilman06cad092007-10-18 23:04:43 -0700839 select GENERIC_CLOCKEVENTS
Sriram9af915d2010-01-29 14:20:05 -0800840 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100841 help
Lennert Buytenhek6e457bb2010-09-22 20:40:57 +0200842 Support for TI's OMAP platform (OMAP1/2/3/4).
Russell King3b938be2007-05-12 11:25:44 +0100843
viresh kumarcee37e52010-04-01 12:31:05 +0100844config PLAT_SPEAR
845 bool "ST SPEAr"
846 select ARM_AMBA
847 select ARCH_REQUIRE_GPIOLIB
848 select COMMON_CLKDEV
849 select GENERIC_CLOCKEVENTS
viresh kumarcee37e52010-04-01 12:31:05 +0100850 select HAVE_CLK
851 help
852 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
853
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854endchoice
855
Russell Kingccf50e22010-03-15 19:03:06 +0000856#
857# This is sorted alphabetically by mach-* pathname. However, plat-*
858# Kconfigs may be included either alphabetically (according to the
859# plat- suffix) or along side the corresponding mach-* source.
860#
Russell King95b8f202010-01-14 11:43:54 +0000861source "arch/arm/mach-aaec2000/Kconfig"
862
863source "arch/arm/mach-at91/Kconfig"
864
865source "arch/arm/mach-bcmring/Kconfig"
866
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867source "arch/arm/mach-clps711x/Kconfig"
868
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300869source "arch/arm/mach-cns3xxx/Kconfig"
870
Russell King95b8f202010-01-14 11:43:54 +0000871source "arch/arm/mach-davinci/Kconfig"
872
873source "arch/arm/mach-dove/Kconfig"
874
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000875source "arch/arm/mach-ep93xx/Kconfig"
876
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877source "arch/arm/mach-footbridge/Kconfig"
878
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200879source "arch/arm/mach-gemini/Kconfig"
880
Russell King95b8f202010-01-14 11:43:54 +0000881source "arch/arm/mach-h720x/Kconfig"
882
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883source "arch/arm/mach-integrator/Kconfig"
884
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100885source "arch/arm/mach-iop32x/Kconfig"
886
887source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888
Dan Williams285f5fa2006-12-07 02:59:39 +0100889source "arch/arm/mach-iop13xx/Kconfig"
890
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891source "arch/arm/mach-ixp4xx/Kconfig"
892
893source "arch/arm/mach-ixp2000/Kconfig"
894
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100895source "arch/arm/mach-ixp23xx/Kconfig"
896
Russell King95b8f202010-01-14 11:43:54 +0000897source "arch/arm/mach-kirkwood/Kconfig"
898
899source "arch/arm/mach-ks8695/Kconfig"
900
901source "arch/arm/mach-lh7a40x/Kconfig"
902
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200903source "arch/arm/mach-loki/Kconfig"
904
Kevin Wells40805942010-07-27 08:49:04 -0700905source "arch/arm/mach-lpc32xx/Kconfig"
906
Russell King95b8f202010-01-14 11:43:54 +0000907source "arch/arm/mach-msm/Kconfig"
908
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200909source "arch/arm/mach-mv78xx0/Kconfig"
910
Russell King95b8f202010-01-14 11:43:54 +0000911source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800913source "arch/arm/mach-mxs/Kconfig"
914
Russell King95b8f202010-01-14 11:43:54 +0000915source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800916
Russell King95b8f202010-01-14 11:43:54 +0000917source "arch/arm/mach-nomadik/Kconfig"
918source "arch/arm/plat-nomadik/Kconfig"
919
920source "arch/arm/mach-ns9xxx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921
Russell Kingd91a89102010-02-04 18:13:17 +0000922source "arch/arm/mach-nuc93x/Kconfig"
923
Tony Lindgrend48af152005-07-10 19:58:17 +0100924source "arch/arm/plat-omap/Kconfig"
925
926source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
Tony Lindgren1dbae812005-11-10 14:26:51 +0000928source "arch/arm/mach-omap2/Kconfig"
929
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400930source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400931
Russell King95b8f202010-01-14 11:43:54 +0000932source "arch/arm/mach-pxa/Kconfig"
933source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934
Russell King95b8f202010-01-14 11:43:54 +0000935source "arch/arm/mach-mmp/Kconfig"
936
937source "arch/arm/mach-realview/Kconfig"
938
939source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300940
Ben Dookscf383672009-11-10 00:14:58 +0000941source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100942source "arch/arm/plat-s3c24xx/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900943source "arch/arm/plat-s5p/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100944
viresh kumarcee37e52010-04-01 12:31:05 +0100945source "arch/arm/plat-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100946
Hans J. Koch83ef3332010-09-17 18:13:56 +0200947source "arch/arm/plat-tcc/Kconfig"
948
Ben Dooksa21765a2007-02-11 18:31:01 +0100949if ARCH_S3C2410
950source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100952source "arch/arm/mach-s3c2412/Kconfig"
Yauhen Kharuzhyf1290a42010-04-28 18:09:01 +0900953source "arch/arm/mach-s3c2416/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100954source "arch/arm/mach-s3c2440/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100955source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100956endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957
Ben Dooksa08ab632008-10-21 14:06:39 +0100958if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900959source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100960endif
961
Kukjin Kim49b7a492010-09-07 15:47:18 +0900962source "arch/arm/mach-s5p64x0/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900963
Kukjin Kim550db7f2010-01-29 10:19:26 +0900964source "arch/arm/mach-s5p6442/Kconfig"
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100965
Byungho Min5a7652f2009-06-23 21:39:42 +0900966source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900967
Kukjin Kim170f4e42010-02-24 16:40:44 +0900968source "arch/arm/mach-s5pv210/Kconfig"
969
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900970source "arch/arm/mach-s5pv310/Kconfig"
971
Russell King882d01f2010-03-02 23:40:15 +0000972source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973
Russell King882d01f2010-03-02 23:40:15 +0000974source "arch/arm/plat-stmp3xxx/Kconfig"
Brian Swetland9e73c842007-11-26 04:12:13 -0800975
Erik Gillingc5f80062010-01-21 16:53:02 -0800976source "arch/arm/mach-tegra/Kconfig"
977
Russell King95b8f202010-01-14 11:43:54 +0000978source "arch/arm/mach-u300/Kconfig"
Quinn Jensen52c543f2007-07-09 22:06:53 +0100979
Russell King95b8f202010-01-14 11:43:54 +0000980source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981
982source "arch/arm/mach-versatile/Kconfig"
983
Russell Kingceade892010-02-11 21:44:53 +0000984source "arch/arm/mach-vexpress/Kconfig"
985
wanzongshun7ec80dd2008-12-03 03:55:38 +0100986source "arch/arm/mach-w90x900/Kconfig"
987
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988# Definitions to make life easier
989config ARCH_ACORN
990 bool
991
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100992config PLAT_IOP
993 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700994 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100995
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400996config PLAT_ORION
997 bool
998
Eric Miaobd5ce432009-01-20 12:06:01 +0800999config PLAT_PXA
1000 bool
1001
Russell Kingf4b8b312010-01-14 12:48:06 +00001002config PLAT_VERSATILE
1003 bool
1004
Russell Kinge3887712010-01-14 13:30:16 +00001005config ARM_TIMER_SP804
1006 bool
1007
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008source arch/arm/mm/Kconfig
1009
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001010config IWMMXT
1011 bool "Enable iWMMXt support"
Eric Miao40305a52009-02-26 09:34:35 +08001012 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
1013 default y if PXA27x || PXA3xx || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001014 help
1015 Enable support for iWMMXt context switching at run time if
1016 running on a CPU that supports it.
1017
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1019config XSCALE_PMU
1020 bool
1021 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1022 default y
1023
Jamie Iles0f4f0672010-02-02 20:23:15 +01001024config CPU_HAS_PMU
Will Deacon8954bb02010-06-21 15:32:54 +01001025 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
1026 (!ARCH_OMAP3 || OMAP3_EMU)
Jamie Iles0f4f0672010-02-02 20:23:15 +01001027 default y
1028 bool
1029
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001030if !MMU
1031source "arch/arm/Kconfig-nommu"
1032endif
1033
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001034config ARM_ERRATA_411920
1035 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Tony Lindgren81d11952010-09-21 17:16:40 +01001036 depends on CPU_V6
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001037 help
1038 Invalidation of the Instruction Cache operation can
1039 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1040 It does not affect the MPCore. This option enables the ARM Ltd.
1041 recommended workaround.
1042
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001043config ARM_ERRATA_430973
1044 bool "ARM errata: Stale prediction on replaced interworking branch"
1045 depends on CPU_V7
1046 help
1047 This option enables the workaround for the 430973 Cortex-A8
1048 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1049 interworking branch is replaced with another code sequence at the
1050 same virtual address, whether due to self-modifying code or virtual
1051 to physical address re-mapping, Cortex-A8 does not recover from the
1052 stale interworking branch prediction. This results in Cortex-A8
1053 executing the new code sequence in the incorrect ARM or Thumb state.
1054 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1055 and also flushes the branch target cache at every context switch.
1056 Note that setting specific bits in the ACTLR register may not be
1057 available in non-secure mode.
1058
Catalin Marinas855c5512009-04-30 17:06:15 +01001059config ARM_ERRATA_458693
1060 bool "ARM errata: Processor deadlock when a false hazard is created"
1061 depends on CPU_V7
1062 help
1063 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1064 erratum. For very specific sequences of memory operations, it is
1065 possible for a hazard condition intended for a cache line to instead
1066 be incorrectly associated with a different cache line. This false
1067 hazard might then cause a processor deadlock. The workaround enables
1068 the L1 caching of the NEON accesses and disables the PLD instruction
1069 in the ACTLR register. Note that setting specific bits in the ACTLR
1070 register may not be available in non-secure mode.
1071
Catalin Marinas0516e462009-04-30 17:06:20 +01001072config ARM_ERRATA_460075
1073 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1074 depends on CPU_V7
1075 help
1076 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1077 erratum. Any asynchronous access to the L2 cache may encounter a
1078 situation in which recent store transactions to the L2 cache are lost
1079 and overwritten with stale memory contents from external memory. The
1080 workaround disables the write-allocate mode for the L2 cache via the
1081 ACTLR register. Note that setting specific bits in the ACTLR register
1082 may not be available in non-secure mode.
1083
Will Deacon9f050272010-09-14 09:51:43 +01001084config ARM_ERRATA_742230
1085 bool "ARM errata: DMB operation may be faulty"
1086 depends on CPU_V7 && SMP
1087 help
1088 This option enables the workaround for the 742230 Cortex-A9
1089 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1090 between two write operations may not ensure the correct visibility
1091 ordering of the two writes. This workaround sets a specific bit in
1092 the diagnostic register of the Cortex-A9 which causes the DMB
1093 instruction to behave as a DSB, ensuring the correct behaviour of
1094 the two writes.
1095
Will Deacona672e992010-09-14 09:53:02 +01001096config ARM_ERRATA_742231
1097 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1098 depends on CPU_V7 && SMP
1099 help
1100 This option enables the workaround for the 742231 Cortex-A9
1101 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1102 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1103 accessing some data located in the same cache line, may get corrupted
1104 data due to bad handling of the address hazard when the line gets
1105 replaced from one of the CPUs at the same time as another CPU is
1106 accessing it. This workaround sets specific bits in the diagnostic
1107 register of the Cortex-A9 which reduces the linefill issuing
1108 capabilities of the processor.
1109
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001110config PL310_ERRATA_588369
1111 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1112 depends on CACHE_L2X0 && ARCH_OMAP4
1113 help
1114 The PL310 L2 cache controller implements three types of Clean &
1115 Invalidate maintenance operations: by Physical Address
1116 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1117 They are architecturally defined to behave as the execution of a
1118 clean operation followed immediately by an invalidate operation,
1119 both performing to the same memory location. This functionality
1120 is not correctly implemented in PL310 as clean lines are not
1121 invalidated as a result of these operations. Note that this errata
1122 uses Texas Instrument's secure monitor api.
Will Deaconcdf357f2010-08-05 11:20:51 +01001123
1124config ARM_ERRATA_720789
1125 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1126 depends on CPU_V7 && SMP
1127 help
1128 This option enables the workaround for the 720789 Cortex-A9 (prior to
1129 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1130 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1131 As a consequence of this erratum, some TLB entries which should be
1132 invalidated are not, resulting in an incoherency in the system page
1133 tables. The workaround changes the TLB flushing routines to invalidate
1134 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001135
1136config ARM_ERRATA_743622
1137 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1138 depends on CPU_V7
1139 help
1140 This option enables the workaround for the 743622 Cortex-A9
1141 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1142 optimisation in the Cortex-A9 Store Buffer may lead to data
1143 corruption. This workaround sets a specific bit in the diagnostic
1144 register of the Cortex-A9 which disables the Store Buffer
1145 optimisation, preventing the defect from occurring. This has no
1146 visible impact on the overall performance or power consumption of the
1147 processor.
1148
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149endmenu
1150
1151source "arch/arm/common/Kconfig"
1152
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153menu "Bus support"
1154
1155config ARM_AMBA
1156 bool
1157
1158config ISA
1159 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160 help
1161 Find out whether you have ISA slots on your motherboard. ISA is the
1162 name of a bus system, i.e. the way the CPU talks to the other stuff
1163 inside your box. Other bus systems are PCI, EISA, MicroChannel
1164 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1165 newer boards don't support it. If you have ISA, say Y, otherwise N.
1166
Russell King065909b2006-01-04 15:44:16 +00001167# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168config ISA_DMA
1169 bool
Russell King065909b2006-01-04 15:44:16 +00001170 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171
Russell King065909b2006-01-04 15:44:16 +00001172# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001173config ISA_DMA_API
1174 bool
Al Viro5cae8412005-05-04 05:39:22 +01001175
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176config PCI
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +04001177 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 -07001178 help
1179 Find out whether you have a PCI motherboard. PCI is the name of a
1180 bus system, i.e. the way the CPU talks to the other stuff inside
1181 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1182 VESA. If you have PCI, say Y, otherwise N.
1183
Anton Vorontsov52882172010-04-19 13:20:49 +01001184config PCI_DOMAINS
1185 bool
1186 depends on PCI
1187
Matthew Wilcox36e23592007-07-10 10:54:40 -06001188config PCI_SYSCALL
1189 def_bool PCI
1190
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191# Select the host bridge type
1192config PCI_HOST_VIA82C505
1193 bool
1194 depends on PCI && ARCH_SHARK
1195 default y
1196
Mike Rapoporta0113a92007-11-25 08:55:34 +01001197config PCI_HOST_ITE8152
1198 bool
1199 depends on PCI && MACH_ARMCORE
1200 default y
1201 select DMABOUNCE
1202
Linus Torvalds1da177e2005-04-16 15:20:36 -07001203source "drivers/pci/Kconfig"
1204
1205source "drivers/pcmcia/Kconfig"
1206
1207endmenu
1208
1209menu "Kernel Features"
1210
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001211source "kernel/time/Kconfig"
1212
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213config SMP
1214 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell King971acb92010-09-04 08:16:30 +01001215 depends on EXPERIMENTAL
Russell Kingbc282482009-05-17 18:58:34 +01001216 depends on GENERIC_CLOCKEVENTS
Russell King971acb92010-09-04 08:16:30 +01001217 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1218 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1219 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001220 select USE_GENERIC_SMP_HELPERS
Russell King971acb92010-09-04 08:16:30 +01001221 select HAVE_ARM_SCU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 help
1223 This enables support for systems with more than one CPU. If you have
1224 a system with only one CPU, like most personal computers, say N. If
1225 you have a system with more than one CPU, say Y.
1226
1227 If you say N here, the kernel will run on single and multiprocessor
1228 machines, but will use only one CPU of a multiprocessor machine. If
1229 you say Y here, the kernel will run on many, but not all, single
1230 processor machines. On a single processor machine, the kernel will
1231 run faster if you say N here.
1232
Adrian Bunk03502fa2008-02-03 15:50:21 +02001233 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001235 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236
1237 If you don't know what to do here, say N.
1238
Russell Kingf00ec482010-09-04 10:47:48 +01001239config SMP_ON_UP
1240 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1241 depends on EXPERIMENTAL
1242 depends on SMP && !XIP && !THUMB2_KERNEL
1243 default y
1244 help
1245 SMP kernels contain instructions which fail on non-SMP processors.
1246 Enabling this option allows the kernel to modify itself to make
1247 these instructions safe. Disabling it allows about 1K of space
1248 savings.
1249
1250 If you don't know what to do here, say Y.
1251
Russell Kinga8cbcd92009-05-16 11:51:14 +01001252config HAVE_ARM_SCU
1253 bool
1254 depends on SMP
1255 help
1256 This option enables support for the ARM system coherency unit
1257
Russell Kingf32f4ce2009-05-16 12:14:21 +01001258config HAVE_ARM_TWD
1259 bool
1260 depends on SMP
1261 help
1262 This options enables support for the ARM timer and watchdog unit
1263
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001264choice
1265 prompt "Memory split"
1266 default VMSPLIT_3G
1267 help
1268 Select the desired split between kernel and user memory.
1269
1270 If you are not absolutely sure what you are doing, leave this
1271 option alone!
1272
1273 config VMSPLIT_3G
1274 bool "3G/1G user/kernel split"
1275 config VMSPLIT_2G
1276 bool "2G/2G user/kernel split"
1277 config VMSPLIT_1G
1278 bool "1G/3G user/kernel split"
1279endchoice
1280
1281config PAGE_OFFSET
1282 hex
1283 default 0x40000000 if VMSPLIT_1G
1284 default 0x80000000 if VMSPLIT_2G
1285 default 0xC0000000
1286
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287config NR_CPUS
1288 int "Maximum number of CPUs (2-32)"
1289 range 2 32
1290 depends on SMP
1291 default "4"
1292
Russell Kinga054a812005-11-02 22:24:33 +00001293config HOTPLUG_CPU
1294 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1295 depends on SMP && HOTPLUG && EXPERIMENTAL
1296 help
1297 Say Y here to experiment with turning CPUs off and on. CPUs
1298 can be controlled through /sys/devices/system/cpu.
1299
Russell King37ee16a2005-11-08 19:08:05 +00001300config LOCAL_TIMERS
1301 bool "Use local timer interrupts"
Russell King971acb92010-09-04 08:16:30 +01001302 depends on SMP
Russell King37ee16a2005-11-08 19:08:05 +00001303 default y
Russell King971acb92010-09-04 08:16:30 +01001304 select HAVE_ARM_TWD
Russell King37ee16a2005-11-08 19:08:05 +00001305 help
1306 Enable support for local timers on SMP platforms, rather then the
1307 legacy IPI broadcast method. Local timers allows the system
1308 accounting to be spread across the timer interval, preventing a
1309 "thundering herd" at every timer tick.
1310
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001311source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312
Russell Kingf8065812006-03-02 22:41:59 +00001313config HZ
1314 int
Kukjin Kim49b7a492010-09-07 15:47:18 +09001315 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
Russell King21924822010-08-09 14:07:19 +01001316 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
Russell Kingbfe65702006-03-04 11:01:53 +00001317 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001318 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001319 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001320 default 100
1321
Catalin Marinas16c79652009-07-24 12:33:02 +01001322config THUMB2_KERNEL
1323 bool "Compile the kernel in Thumb-2 mode"
1324 depends on CPU_V7 && EXPERIMENTAL
1325 select AEABI
1326 select ARM_ASM_UNIFIED
1327 help
1328 By enabling this option, the kernel will be compiled in
1329 Thumb-2 mode. A compiler/assembler that understand the unified
1330 ARM-Thumb syntax is needed.
1331
1332 If unsure, say N.
1333
Catalin Marinas0becb082009-07-24 12:32:53 +01001334config ARM_ASM_UNIFIED
1335 bool
1336
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001337config AEABI
1338 bool "Use the ARM EABI to compile the kernel"
1339 help
1340 This option allows for the kernel to be compiled using the latest
1341 ARM ABI (aka EABI). This is only useful if you are using a user
1342 space environment that is also compiled with EABI.
1343
1344 Since there are major incompatibilities between the legacy ABI and
1345 EABI, especially with regard to structure member alignment, this
1346 option also changes the kernel syscall calling convention to
1347 disambiguate both ABIs and allow for backward compatibility support
1348 (selected with CONFIG_OABI_COMPAT).
1349
1350 To use this you need GCC version 4.0.0 or later.
1351
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001352config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001353 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +00001354 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001355 default y
1356 help
1357 This option preserves the old syscall interface along with the
1358 new (ARM EABI) one. It also provides a compatibility layer to
1359 intercept syscalls that have structure arguments which layout
1360 in memory differs between the legacy ABI and the new ARM EABI
1361 (only for non "thumb" binaries). This option adds a tiny
1362 overhead to all syscalls and produces a slightly larger kernel.
1363 If you know you'll be using only pure EABI user space then you
1364 can say N here. If this option is not selected and you attempt
1365 to execute a legacy ABI binary then the result will be
1366 UNPREDICTABLE (in fact it can be predicted that it won't work
1367 at all). If in doubt say Y.
1368
Mel Gormaneb335752009-05-13 17:34:48 +01001369config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001370 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001371
Russell King05944d72006-11-30 20:43:51 +00001372config ARCH_SPARSEMEM_ENABLE
1373 bool
1374
Russell King07a2f732008-10-01 21:39:58 +01001375config ARCH_SPARSEMEM_DEFAULT
1376 def_bool ARCH_SPARSEMEM_ENABLE
1377
Russell King05944d72006-11-30 20:43:51 +00001378config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001379 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001380
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001381config HIGHMEM
1382 bool "High Memory Support (EXPERIMENTAL)"
1383 depends on MMU && EXPERIMENTAL
1384 help
1385 The address space of ARM processors is only 4 Gigabytes large
1386 and it has to accommodate user address space, kernel address
1387 space as well as some memory mapped IO. That means that, if you
1388 have a large amount of physical memory and/or IO, not all of the
1389 memory can be "permanently mapped" by the kernel. The physical
1390 memory that is not permanently mapped is called "high memory".
1391
1392 Depending on the selected kernel/user memory split, minimum
1393 vmalloc space and actual amount of RAM, you may not need this
1394 option which should result in a slightly faster kernel.
1395
1396 If unsure, say n.
1397
Russell King65cec8e2009-08-17 20:02:06 +01001398config HIGHPTE
1399 bool "Allocate 2nd-level pagetables from highmem"
1400 depends on HIGHMEM
1401 depends on !OUTER_CACHE
1402
Jamie Iles1b8873a2010-02-02 20:25:44 +01001403config HW_PERF_EVENTS
1404 bool "Enable hardware performance counter support for perf events"
Will Deaconfe166142010-04-30 11:37:51 +01001405 depends on PERF_EVENTS && CPU_HAS_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001406 default y
1407 help
1408 Enable hardware performance counter support for perf events. If
1409 disabled, perf events will use software events only.
1410
eric miao354e6f72010-06-25 09:46:09 +01001411config SPARSE_IRQ
eric miaoc1ba6ba2010-07-22 09:55:53 +01001412 def_bool n
eric miao354e6f72010-06-25 09:46:09 +01001413 help
1414 This enables support for sparse irqs. This is useful in general
1415 as most CPUs have a fairly sparse array of IRQ vectors, which
1416 the irq_desc then maps directly on to. Systems with a high
1417 number of off-chip IRQs will want to treat this as
1418 experimental until they have been independently verified.
1419
Dave Hansen3f22ab22005-06-23 00:07:43 -07001420source "mm/Kconfig"
1421
Magnus Dammc1b2d972010-07-05 10:00:11 +01001422config FORCE_MAX_ZONEORDER
1423 int "Maximum zone order" if ARCH_SHMOBILE
1424 range 11 64 if ARCH_SHMOBILE
1425 default "9" if SA1111
1426 default "11"
1427 help
1428 The kernel memory allocator divides physically contiguous memory
1429 blocks into "zones", where each zone is a power of two number of
1430 pages. This option selects the largest power of two that the kernel
1431 keeps in the memory allocator. If you need to allocate very large
1432 blocks of physically contiguous memory, then you may need to
1433 increase this value.
1434
1435 This config option is actually maximum order plus one. For example,
1436 a value of 11 means that the largest free memory block is 2^10 pages.
1437
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438config LEDS
1439 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001440 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001441 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1443 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001444 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001445 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042f2009-05-30 13:56:13 +01001446 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447 help
1448 If you say Y here, the LEDs on your machine will be used
1449 to provide useful information about your current system status.
1450
1451 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1452 be able to select which LEDs are active using the options below. If
1453 you are compiling a kernel for the EBSA-110 or the LART however, the
1454 red LED will simply flash regularly to indicate that the system is
1455 still functional. It is safe to say Y here if you have a CATS
1456 system, but the driver will do nothing.
1457
1458config LEDS_TIMER
1459 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001460 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1461 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001463 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 default y if ARCH_EBSA110
1465 help
1466 If you say Y here, one of the system LEDs (the green one on the
1467 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1468 will flash regularly to indicate that the system is still
1469 operational. This is mainly useful to kernel hackers who are
1470 debugging unstable kernels.
1471
1472 The LART uses the same LED for both Timer LED and CPU usage LED
1473 functions. You may choose to use both, but the Timer LED function
1474 will overrule the CPU usage LED.
1475
1476config LEDS_CPU
1477 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001478 !ARCH_OMAP) \
1479 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1480 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481 depends on LEDS
1482 help
1483 If you say Y here, the red LED will be used to give a good real
1484 time indication of CPU usage, by lighting whenever the idle task
1485 is not currently executing.
1486
1487 The LART uses the same LED for both Timer LED and CPU usage LED
1488 functions. You may choose to use both, but the Timer LED function
1489 will overrule the CPU usage LED.
1490
1491config ALIGNMENT_TRAP
1492 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001493 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001495 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001497 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1499 address divisible by 4. On 32-bit ARM processors, these non-aligned
1500 fetch/store instructions will be emulated in software if you say
1501 here, which has a severe performance impact. This is necessary for
1502 correct operation of some network protocols. With an IP-only
1503 configuration it is safe to say N, otherwise say Y.
1504
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001505config UACCESS_WITH_MEMCPY
1506 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1507 depends on MMU && EXPERIMENTAL
1508 default y if CPU_FEROCEON
1509 help
1510 Implement faster copy_to_user and clear_user methods for CPU
1511 cores where a 8-word STM instruction give significantly higher
1512 memory write throughput than a sequence of individual 32bit stores.
1513
1514 A possible side effect is a slight increase in scheduling latency
1515 between threads sharing the same address space if they invoke
1516 such copy operations with large buffers.
1517
1518 However, if the CPU data cache is using a write-allocate mode,
1519 this option is unlikely to provide any performance gain.
1520
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001521config SECCOMP
1522 bool
1523 prompt "Enable seccomp to safely compute untrusted bytecode"
1524 ---help---
1525 This kernel feature is useful for number crunching applications
1526 that may need to compute untrusted bytecode during their
1527 execution. By using pipes or other transports made available to
1528 the process as file descriptors supporting the read/write
1529 syscalls, it's possible to isolate those applications in
1530 their own address space using seccomp. Once seccomp is
1531 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1532 and the task is only allowed to execute a few safe syscalls
1533 defined by each seccomp mode.
1534
Nicolas Pitrec743f382010-05-24 23:55:42 -04001535config CC_STACKPROTECTOR
1536 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1537 help
1538 This option turns on the -fstack-protector GCC feature. This
1539 feature puts, at the beginning of functions, a canary value on
1540 the stack just before the return address, and validates
1541 the value just before actually returning. Stack based buffer
1542 overflows (that need to overwrite this return address) now also
1543 overwrite the canary, which gets detected and the attack is then
1544 neutralized via a kernel panic.
1545 This feature requires gcc version 4.2 or above.
1546
Uwe Kleine-König73a65b32010-01-19 10:13:14 +01001547config DEPRECATED_PARAM_STRUCT
1548 bool "Provide old way to pass kernel parameters"
1549 help
1550 This was deprecated in 2001 and announced to live on for 5 years.
1551 Some old boot loaders still use this way.
1552
Linus Torvalds1da177e2005-04-16 15:20:36 -07001553endmenu
1554
1555menu "Boot options"
1556
1557# Compressed boot loader in ROM. Yes, we really want to ask about
1558# TEXT and BSS so we preserve their values in the config files.
1559config ZBOOT_ROM_TEXT
1560 hex "Compressed ROM boot loader base address"
1561 default "0"
1562 help
1563 The physical address at which the ROM-able zImage is to be
1564 placed in the target. Platforms which normally make use of
1565 ROM-able zImage formats normally set this to a suitable
1566 value in their defconfig file.
1567
1568 If ZBOOT_ROM is not enabled, this has no effect.
1569
1570config ZBOOT_ROM_BSS
1571 hex "Compressed ROM boot loader BSS address"
1572 default "0"
1573 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001574 The base address of an area of read/write memory in the target
1575 for the ROM-able zImage which must be available while the
1576 decompressor is running. It must be large enough to hold the
1577 entire decompressed kernel plus an additional 128 KiB.
1578 Platforms which normally make use of ROM-able zImage formats
1579 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001580
1581 If ZBOOT_ROM is not enabled, this has no effect.
1582
1583config ZBOOT_ROM
1584 bool "Compressed boot loader in ROM/flash"
1585 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1586 help
1587 Say Y here if you intend to execute your compressed kernel image
1588 (zImage) directly from ROM or flash. If unsure, say N.
1589
1590config CMDLINE
1591 string "Default kernel command string"
1592 default ""
1593 help
1594 On some architectures (EBSA110 and CATS), there is currently no way
1595 for the boot loader to pass arguments to the kernel. For these
1596 architectures, you should supply some command-line options at build
1597 time by entering them here. As a minimum, you should specify the
1598 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1599
Alexander Holler92d20402010-02-16 19:04:53 +01001600config CMDLINE_FORCE
1601 bool "Always use the default kernel command string"
1602 depends on CMDLINE != ""
1603 help
1604 Always use the default kernel command string, even if the boot
1605 loader passes other arguments to the kernel.
1606 This is useful if you cannot or don't want to change the
1607 command-line options your boot loader passes to the kernel.
1608
1609 If unsure, say N.
1610
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611config XIP_KERNEL
1612 bool "Kernel Execute-In-Place from ROM"
1613 depends on !ZBOOT_ROM
1614 help
1615 Execute-In-Place allows the kernel to run from non-volatile storage
1616 directly addressable by the CPU, such as NOR flash. This saves RAM
1617 space since the text section of the kernel is not loaded from flash
1618 to RAM. Read-write sections, such as the data section and stack,
1619 are still copied to RAM. The XIP kernel is not compressed since
1620 it has to run directly from flash, so it will take more space to
1621 store it. The flash address used to link the kernel object files,
1622 and for storing it, is configuration dependent. Therefore, if you
1623 say Y here, you must know the proper physical address where to
1624 store the kernel image depending on your own flash memory usage.
1625
1626 Also note that the make target becomes "make xipImage" rather than
1627 "make zImage" or "make Image". The final kernel binary to put in
1628 ROM memory will be arch/arm/boot/xipImage.
1629
1630 If unsure, say N.
1631
1632config XIP_PHYS_ADDR
1633 hex "XIP Kernel Physical Location"
1634 depends on XIP_KERNEL
1635 default "0x00080000"
1636 help
1637 This is the physical address in your flash memory the kernel will
1638 be linked for and stored to. This address is dependent on your
1639 own flash usage.
1640
Richard Purdiec587e4a2007-02-06 21:29:00 +01001641config KEXEC
1642 bool "Kexec system call (EXPERIMENTAL)"
1643 depends on EXPERIMENTAL
1644 help
1645 kexec is a system call that implements the ability to shutdown your
1646 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001647 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001648 you can start any kernel with it, not just Linux.
1649
1650 It is an ongoing process to be certain the hardware in a machine
1651 is properly shutdown, so do not be surprised if this code does not
1652 initially work for you. It may help to enable device hotplugging
1653 support.
1654
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001655config ATAGS_PROC
1656 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01001657 depends on KEXEC
1658 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001659 help
1660 Should the atags used to boot the kernel be exported in an "atags"
1661 file in procfs. Useful with kexec.
1662
Eric Miaoe69edc792010-07-05 15:56:50 +02001663config AUTO_ZRELADDR
1664 bool "Auto calculation of the decompressed kernel image address"
1665 depends on !ZBOOT_ROM && !ARCH_U300
1666 help
1667 ZRELADDR is the physical address where the decompressed kernel
1668 image will be placed. If AUTO_ZRELADDR is selected, the address
1669 will be determined at run-time by masking the current IP with
1670 0xf8000000. This assumes the zImage being placed in the first 128MB
1671 from start of memory.
1672
Linus Torvalds1da177e2005-04-16 15:20:36 -07001673endmenu
1674
Russell Kingac9d7ef2008-08-18 17:26:00 +01001675menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001676
Ben Dooks89c52ed2009-07-30 23:23:24 +01001677if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07001678
1679source "drivers/cpufreq/Kconfig"
1680
Yong Shen64f102b2010-10-21 21:18:59 +08001681config CPU_FREQ_IMX
1682 tristate "CPUfreq driver for i.MX CPUs"
1683 depends on ARCH_MXC && CPU_FREQ
1684 help
1685 This enables the CPUfreq driver for i.MX CPUs.
1686
Linus Torvalds1da177e2005-04-16 15:20:36 -07001687config CPU_FREQ_SA1100
1688 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001689
1690config CPU_FREQ_SA1110
1691 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001692
1693config CPU_FREQ_INTEGRATOR
1694 tristate "CPUfreq driver for ARM Integrator CPUs"
1695 depends on ARCH_INTEGRATOR && CPU_FREQ
1696 default y
1697 help
1698 This enables the CPUfreq driver for ARM Integrator CPUs.
1699
1700 For details, take a look at <file:Documentation/cpu-freq>.
1701
1702 If in doubt, say Y.
1703
Russell King9e2697f2007-12-14 13:30:14 +00001704config CPU_FREQ_PXA
1705 bool
1706 depends on CPU_FREQ && ARCH_PXA && PXA25x
1707 default y
1708 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1709
Mark Brownb3748dd2009-06-15 11:23:20 +01001710config CPU_FREQ_S3C64XX
1711 bool "CPUfreq support for Samsung S3C64XX CPUs"
1712 depends on CPU_FREQ && CPU_S3C6410
1713
Ben Dooks9d56c022009-07-30 23:23:25 +01001714config CPU_FREQ_S3C
1715 bool
1716 help
1717 Internal configuration node for common cpufreq on Samsung SoC
1718
1719config CPU_FREQ_S3C24XX
1720 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1721 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1722 select CPU_FREQ_S3C
1723 help
1724 This enables the CPUfreq driver for the Samsung S3C24XX family
1725 of CPUs.
1726
1727 For details, take a look at <file:Documentation/cpu-freq>.
1728
1729 If in doubt, say N.
1730
1731config CPU_FREQ_S3C24XX_PLL
1732 bool "Support CPUfreq changing of PLL frequency"
1733 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1734 help
1735 Compile in support for changing the PLL frequency from the
1736 S3C24XX series CPUfreq driver. The PLL takes time to settle
1737 after a frequency change, so by default it is not enabled.
1738
1739 This also means that the PLL tables for the selected CPU(s) will
1740 be built which may increase the size of the kernel image.
1741
1742config CPU_FREQ_S3C24XX_DEBUG
1743 bool "Debug CPUfreq Samsung driver core"
1744 depends on CPU_FREQ_S3C24XX
1745 help
1746 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1747
1748config CPU_FREQ_S3C24XX_IODEBUG
1749 bool "Debug CPUfreq Samsung driver IO timing"
1750 depends on CPU_FREQ_S3C24XX
1751 help
1752 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1753
Ben Dookse6d197a2009-07-30 23:23:42 +01001754config CPU_FREQ_S3C24XX_DEBUGFS
1755 bool "Export debugfs for CPUFreq"
1756 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1757 help
1758 Export status information via debugfs.
1759
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760endif
1761
Russell Kingac9d7ef2008-08-18 17:26:00 +01001762source "drivers/cpuidle/Kconfig"
1763
1764endmenu
1765
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766menu "Floating point emulation"
1767
1768comment "At least one emulation must be selected"
1769
1770config FPE_NWFPE
1771 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001772 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773 ---help---
1774 Say Y to include the NWFPE floating point emulator in the kernel.
1775 This is necessary to run most binaries. Linux does not currently
1776 support floating point hardware so you need to say Y here even if
1777 your machine has an FPA or floating point co-processor podule.
1778
1779 You may say N here if you are going to load the Acorn FPEmulator
1780 early in the bootup.
1781
1782config FPE_NWFPE_XP
1783 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001784 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785 help
1786 Say Y to include 80-bit support in the kernel floating-point
1787 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1788 Note that gcc does not generate 80-bit operations by default,
1789 so in most cases this option only enlarges the size of the
1790 floating point emulator without any good reason.
1791
1792 You almost surely want to say N here.
1793
1794config FPE_FASTFPE
1795 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001796 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001797 ---help---
1798 Say Y here to include the FAST floating point emulator in the kernel.
1799 This is an experimental much faster emulator which now also has full
1800 precision for the mantissa. It does not support any exceptions.
1801 It is very simple, and approximately 3-6 times faster than NWFPE.
1802
1803 It should be sufficient for most programs. It may be not suitable
1804 for scientific calculations, but you have to check this for yourself.
1805 If you do not feel you need a faster FP emulation you should better
1806 choose NWFPE.
1807
1808config VFP
1809 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001810 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811 help
1812 Say Y to include VFP support code in the kernel. This is needed
1813 if your hardware includes a VFP unit.
1814
1815 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1816 release notes and additional status information.
1817
1818 Say N if your target does not have VFP hardware.
1819
Catalin Marinas25ebee02007-09-25 15:22:24 +01001820config VFPv3
1821 bool
1822 depends on VFP
1823 default y if CPU_V7
1824
Catalin Marinasb5872db2008-01-10 19:16:17 +01001825config NEON
1826 bool "Advanced SIMD (NEON) Extension support"
1827 depends on VFPv3 && CPU_V7
1828 help
1829 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1830 Extension.
1831
Linus Torvalds1da177e2005-04-16 15:20:36 -07001832endmenu
1833
1834menu "Userspace binary formats"
1835
1836source "fs/Kconfig.binfmt"
1837
1838config ARTHUR
1839 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001840 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 help
1842 Say Y here to include the kernel code necessary if you want to run
1843 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1844 experimental; if this sounds frightening, say N and sleep in peace.
1845 You can also say M here to compile this support as a module (which
1846 will be called arthur).
1847
1848endmenu
1849
1850menu "Power management options"
1851
Russell Kingeceab4a2005-11-15 11:31:41 +00001852source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853
Johannes Bergf4cb5702007-12-08 02:14:00 +01001854config ARCH_SUSPEND_POSSIBLE
1855 def_bool y
1856
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857endmenu
1858
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001859source "net/Kconfig"
1860
Uwe Kleine-Königac251502009-08-13 21:09:21 +02001861source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001862
1863source "fs/Kconfig"
1864
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865source "arch/arm/Kconfig.debug"
1866
1867source "security/Kconfig"
1868
1869source "crypto/Kconfig"
1870
1871source "lib/Kconfig"