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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
Kevin Hilman746140c2006-09-22 00:16:30 +010046config GENERIC_TIME
47 bool
John Stultz5cfc8ee2010-03-24 00:22:36 +000048 default y
49
50config ARCH_USES_GETTIMEOFFSET
51 bool
52 default n
Kevin Hilman746140c2006-09-22 00:16:30 +010053
Kevin Hilman0567a0c2007-03-13 20:29:24 +010054config GENERIC_CLOCKEVENTS
55 bool
Kevin Hilman0567a0c2007-03-13 20:29:24 +010056
Catalin Marinasa8655e82008-02-04 17:30:57 +010057config GENERIC_CLOCKEVENTS_BROADCAST
58 bool
59 depends on GENERIC_CLOCKEVENTS
Russell King5388a6b2010-07-26 13:19:43 +010060 default y if SMP
Catalin Marinasa8655e82008-02-04 17:30:57 +010061
Linus Walleijbc581772009-09-15 17:30:37 +010062config HAVE_TCM
63 bool
64 select GENERIC_ALLOCATOR
65
Russell Kinge119bff2010-01-10 17:23:29 +000066config HAVE_PROC_CPU
67 bool
68
Al Viro5ea81762007-02-11 15:41:31 +000069config NO_IOPORT
70 bool
Al Viro5ea81762007-02-11 15:41:31 +000071
Linus Torvalds1da177e2005-04-16 15:20:36 -070072config EISA
73 bool
74 ---help---
75 The Extended Industry Standard Architecture (EISA) bus was
76 developed as an open alternative to the IBM MicroChannel bus.
77
78 The EISA bus provided some of the features of the IBM MicroChannel
79 bus while maintaining backward compatibility with cards made for
80 the older ISA bus. The EISA bus saw limited use between 1988 and
81 1995 when it was made obsolete by the PCI bus.
82
83 Say Y here if you are building a kernel for an EISA-based machine.
84
85 Otherwise, say N.
86
87config SBUS
88 bool
89
90config MCA
91 bool
92 help
93 MicroChannel Architecture is found in some IBM PS/2 machines and
94 laptops. It is a bus system similar to PCI or ISA. See
95 <file:Documentation/mca.txt> (and especially the web page given
96 there) before attempting to build an MCA bus kernel.
97
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010098config GENERIC_HARDIRQS
99 bool
100 default y
101
Russell Kingf16fb1e2007-04-28 09:59:37 +0100102config STACKTRACE_SUPPORT
103 bool
104 default y
105
Nicolas Pitref76e9152008-04-24 01:31:46 -0400106config HAVE_LATENCYTOP_SUPPORT
107 bool
108 depends on !SMP
109 default y
110
Russell Kingf16fb1e2007-04-28 09:59:37 +0100111config LOCKDEP_SUPPORT
112 bool
113 default y
114
Russell King7ad1bcb2006-08-27 12:07:02 +0100115config TRACE_IRQFLAGS_SUPPORT
116 bool
117 default y
118
Thomas Gleixner4a2581a2006-07-01 22:30:09 +0100119config HARDIRQS_SW_RESEND
120 bool
121 default y
122
123config GENERIC_IRQ_PROBE
124 bool
125 default y
126
Nick Piggin95c354f2008-01-30 13:31:20 +0100127config GENERIC_LOCKBREAK
128 bool
129 default y
130 depends on SMP && PREEMPT
131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132config RWSEM_GENERIC_SPINLOCK
133 bool
134 default y
135
136config RWSEM_XCHGADD_ALGORITHM
137 bool
138
David Howellsf0d1b0b2006-12-08 02:37:49 -0800139config ARCH_HAS_ILOG2_U32
140 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800141
142config ARCH_HAS_ILOG2_U64
143 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800144
Ben Dooks89c52ed2009-07-30 23:23:24 +0100145config ARCH_HAS_CPUFREQ
146 bool
147 help
148 Internal node to signify that the ARCH has CPUFREQ support
149 and that the relevant menu configurations are displayed for
150 it.
151
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800152config GENERIC_HWEIGHT
153 bool
154 default y
155
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156config GENERIC_CALIBRATE_DELAY
157 bool
158 default y
159
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100160config ARCH_MAY_HAVE_PC_FDC
161 bool
162
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800163config ZONE_DMA
164 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800165
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800166config NEED_DMA_MAP_STATE
167 def_bool y
168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169config GENERIC_ISA_DMA
170 bool
171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172config FIQ
173 bool
174
Al Viro034d2f52005-12-19 16:27:59 -0500175config ARCH_MTD_XIP
176 bool
177
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100178config GENERIC_HARDIRQS_NO__DO_IRQ
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100179 def_bool y
180
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100181config ARM_L1_CACHE_SHIFT_6
182 bool
183 help
184 Setting ARM L1 cache line size to 64 Bytes.
185
Hyok S. Choic760fc12006-03-27 15:18:50 +0100186config VECTORS_BASE
187 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900188 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100189 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 default 0x00000000
191 help
192 The base address of exception vectors.
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194source "init/Kconfig"
195
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700196source "kernel/Kconfig.freezer"
197
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198menu "System Type"
199
Hyok S. Choi3c427972009-07-24 12:35:00 +0100200config MMU
201 bool "MMU-based Paged Memory Management Support"
202 default y
203 help
204 Select if you want MMU-based virtualised addressing space
205 support by paged memory management. If unsure, say 'Y'.
206
Russell Kingccf50e22010-03-15 19:03:06 +0000207#
208# The "ARM system type" choice list is ordered alphabetically by option
209# text. Please add new entries in the option alphabetic order.
210#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211choice
212 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000213 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100215config ARCH_AAEC2000
216 bool "Agilent AAEC-2000 based"
Russell Kingc7508152008-10-26 10:55:14 +0000217 select CPU_ARM920T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100218 select ARM_AMBA
David Brownell9483a572008-07-23 21:26:48 -0700219 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000220 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100221 help
222 This enables support for systems based on the Agilent AAEC-2000
223
224config ARCH_INTEGRATOR
225 bool "ARM Ltd. Integrator family"
226 select ARM_AMBA
Ben Dooks89c52ed2009-07-30 23:23:24 +0100227 select ARCH_HAS_CPUFREQ
Russell Kingd72fbdf2008-11-08 20:08:08 +0000228 select COMMON_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000229 select ICST
Russell King13edd862010-01-15 21:49:23 +0000230 select GENERIC_CLOCKEVENTS
Russell Kingf4b8b312010-01-14 12:48:06 +0000231 select PLAT_VERSATILE
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100232 help
233 Support for ARM's Integrator platform.
234
235config ARCH_REALVIEW
236 bool "ARM Ltd. RealView family"
237 select ARM_AMBA
Russell Kingcf30fb42008-11-08 20:05:55 +0000238 select COMMON_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000239 select ICST
Catalin Marinasae30cea2008-02-04 17:26:55 +0100240 select GENERIC_CLOCKEVENTS
Russell Kingeb7fffa2009-07-05 22:41:31 +0100241 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000242 select PLAT_VERSATILE
Russell Kinge3887712010-01-14 13:30:16 +0000243 select ARM_TIMER_SP804
Colin Tuckleyb56ba8a2010-02-24 15:23:10 +0100244 select GPIO_PL061 if GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100245 help
246 This enables support for ARM Ltd RealView boards.
247
248config ARCH_VERSATILE
249 bool "ARM Ltd. Versatile family"
250 select ARM_AMBA
251 select ARM_VIC
Russell King71a06da2008-11-08 20:13:53 +0000252 select COMMON_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000253 select ICST
Kevin Hilman89df1272007-03-08 20:30:38 +0100254 select GENERIC_CLOCKEVENTS
Russell Kingbbeddc42009-07-05 22:43:01 +0100255 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000256 select PLAT_VERSATILE
Russell Kinge3887712010-01-14 13:30:16 +0000257 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100258 help
259 This enables support for ARM Ltd Versatile board.
260
Russell Kingceade892010-02-11 21:44:53 +0000261config ARCH_VEXPRESS
262 bool "ARM Ltd. Versatile Express family"
263 select ARCH_WANT_OPTIONAL_GPIOLIB
264 select ARM_AMBA
265 select ARM_TIMER_SP804
266 select COMMON_CLKDEV
267 select GENERIC_CLOCKEVENTS
Russell Kingceade892010-02-11 21:44:53 +0000268 select HAVE_CLK
269 select ICST
270 select PLAT_VERSATILE
271 help
272 This enables support for the ARM Ltd Versatile Express boards.
273
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100274config ARCH_AT91
275 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100276 select ARCH_REQUIRE_GPIOLIB
David Brownell93686ae2008-07-28 15:46:22 -0700277 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000278 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100279 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100280 This enables support for systems based on the Atmel AT91RM9200,
281 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100282
Russell Kingccf50e22010-03-15 19:03:06 +0000283config ARCH_BCMRING
284 bool "Broadcom BCMRING"
285 depends on MMU
286 select CPU_V6
287 select ARM_AMBA
288 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000289 select GENERIC_CLOCKEVENTS
290 select ARCH_WANT_OPTIONAL_GPIOLIB
291 help
292 Support for Broadcom's BCMRing platform.
293
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100295 bool "Cirrus Logic CLPS711x/EP721x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000296 select CPU_ARM720T
John Stultz5cfc8ee2010-03-24 00:22:36 +0000297 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000298 help
299 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300301config ARCH_CNS3XXX
302 bool "Cavium Networks CNS3XXX family"
303 select CPU_V6
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300304 select GENERIC_CLOCKEVENTS
305 select ARM_GIC
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +0400306 select PCI_DOMAINS if PCI
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300307 help
308 Support for Cavium Networks CNS3XXX platform.
309
Russell King788c9702009-04-26 14:21:59 +0100310config ARCH_GEMINI
311 bool "Cortina Systems Gemini"
312 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100313 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000314 select ARCH_USES_GETTIMEOFFSET
Russell King788c9702009-04-26 14:21:59 +0100315 help
316 Support for the Cortina Systems Gemini family SoCs
317
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318config ARCH_EBSA110
319 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000320 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100321 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000322 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000323 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 help
325 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000326 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 Ethernet interface, two PCMCIA sockets, two serial ports and a
328 parallel port.
329
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000330config ARCH_EP93XX
331 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000332 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000333 select ARM_AMBA
334 select ARM_VIC
Russell Kingae696fd2008-11-30 17:11:49 +0000335 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700336 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100337 select ARCH_HAS_HOLES_MEMORYMODEL
John Stultz5cfc8ee2010-03-24 00:22:36 +0000338 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000339 help
340 This enables support for the Cirrus EP93xx series of CPUs.
341
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342config ARCH_FOOTBRIDGE
343 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000344 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 select FOOTBRIDGE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000346 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000347 help
348 Support for systems based on the DC21285 companion chip
349 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350
Russell King788c9702009-04-26 14:21:59 +0100351config ARCH_MXC
352 bool "Freescale MXC/iMX-based"
Russell King788c9702009-04-26 14:21:59 +0100353 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100354 select ARCH_REQUIRE_GPIOLIB
Uwe Kleine-König03e09cd2010-02-15 17:10:42 +0100355 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100356 help
357 Support for Freescale MXC/iMX-based family of processors
358
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100359config ARCH_STMP3XXX
360 bool "Freescale STMP3xxx"
361 select CPU_ARM926T
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100362 select COMMON_CLKDEV
363 select ARCH_REQUIRE_GPIOLIB
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100364 select GENERIC_CLOCKEVENTS
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100365 select USB_ARCH_HAS_EHCI
366 help
367 Support for systems based on the Freescale 3xxx CPUs.
368
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100369config ARCH_NETX
370 bool "Hilscher NetX based"
Russell Kingc7508152008-10-26 10:55:14 +0000371 select CPU_ARM926T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100372 select ARM_VIC
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100373 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000374 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100375 This enables support for systems based on the Hilscher NetX Soc
376
377config ARCH_H720X
378 bool "Hynix HMS720x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000379 select CPU_ARM720T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100380 select ISA_DMA_API
John Stultz5cfc8ee2010-03-24 00:22:36 +0000381 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100382 help
383 This enables support for systems based on the Hynix HMS720x
384
Russell King3b938be2007-05-12 11:25:44 +0100385config ARCH_IOP13XX
386 bool "IOP13xx-based"
387 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000388 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100389 select PLAT_IOP
390 select PCI
391 select ARCH_SUPPORTS_MSI
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +0100392 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100393 help
394 Support for Intel's IOP13XX (XScale) family of processors.
395
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100396config ARCH_IOP32X
397 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100398 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000399 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100400 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100401 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100402 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000403 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100404 Support for Intel's 80219 and IOP32X (XScale) family of
405 processors.
406
407config ARCH_IOP33X
408 bool "IOP33x-based"
409 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000410 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100411 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100412 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100413 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100414 help
415 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
Russell King3b938be2007-05-12 11:25:44 +0100417config ARCH_IXP23XX
418 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100419 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000420 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100421 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000422 select ARCH_USES_GETTIMEOFFSET
Dan Williams285f5fa2006-12-07 02:59:39 +0100423 help
Russell King3b938be2007-05-12 11:25:44 +0100424 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
426config ARCH_IXP2000
427 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100428 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000429 select CPU_XSCALE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100430 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000431 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000432 help
433 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434
Russell King3b938be2007-05-12 11:25:44 +0100435config ARCH_IXP4XX
436 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100437 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000438 select CPU_XSCALE
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100439 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100440 select GENERIC_CLOCKEVENTS
Russell King485bdde2008-10-17 14:00:43 +0100441 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100442 help
Russell King3b938be2007-05-12 11:25:44 +0100443 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100444
Saeed Bisharaedabd382009-08-06 15:12:43 +0300445config ARCH_DOVE
446 bool "Marvell Dove"
447 select PCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300448 select ARCH_REQUIRE_GPIOLIB
Saeed Bisharaedabd382009-08-06 15:12:43 +0300449 select GENERIC_CLOCKEVENTS
450 select PLAT_ORION
451 help
452 Support for the Marvell Dove SoC 88AP510
453
Saeed Bishara651c74c2008-06-22 22:45:06 +0200454config ARCH_KIRKWOOD
455 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000456 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200457 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700458 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200459 select GENERIC_CLOCKEVENTS
460 select PLAT_ORION
461 help
462 Support for the following Marvell Kirkwood series SoCs:
463 88F6180, 88F6192 and 88F6281.
464
Russell King788c9702009-04-26 14:21:59 +0100465config ARCH_LOKI
466 bool "Marvell Loki (88RC8480)"
467 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100468 select GENERIC_CLOCKEVENTS
469 select PLAT_ORION
470 help
471 Support for the Marvell Loki (88RC8480) SoC.
472
Kevin Wells40805942010-07-27 08:49:04 -0700473config ARCH_LPC32XX
474 bool "NXP LPC32XX"
475 select CPU_ARM926T
476 select ARCH_REQUIRE_GPIOLIB
477 select HAVE_IDE
478 select ARM_AMBA
479 select USB_ARCH_HAS_OHCI
480 select COMMON_CLKDEV
481 select GENERIC_TIME
482 select GENERIC_CLOCKEVENTS
483 help
484 Support for the NXP LPC32XX family of processors
485
Russell King788c9702009-04-26 14:21:59 +0100486config ARCH_MV78XX0
487 bool "Marvell MV78xx0"
488 select CPU_FEROCEON
489 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700490 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100491 select GENERIC_CLOCKEVENTS
492 select PLAT_ORION
493 help
494 Support for the following Marvell MV78xx0 series SoCs:
495 MV781x0, MV782x0.
496
497config ARCH_ORION5X
498 bool "Marvell Orion"
499 depends on MMU
500 select CPU_FEROCEON
501 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700502 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100503 select GENERIC_CLOCKEVENTS
504 select PLAT_ORION
505 help
506 Support for the following Marvell Orion 5x series SoCs:
507 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
508 Orion-2 (5281), Orion-1-90 (6183).
509
510config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500511 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100512 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100513 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100514 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100515 select GENERIC_CLOCKEVENTS
516 select TICK_ONESHOT
517 select PLAT_PXA
518 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500519 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100520
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100521config ARCH_KS8695
522 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000523 select CPU_ARM922T
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100524 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000525 select ARCH_USES_GETTIMEOFFSET
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100526 help
527 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
528 System-on-Chip devices.
529
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100530config ARCH_NS9XXX
531 bool "NetSilicon NS9xxx"
Russell Kingc7508152008-10-26 10:55:14 +0000532 select CPU_ARM926T
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100533 select GENERIC_GPIO
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100534 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700535 select HAVE_CLK
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100536 help
537 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
538 System.
539
540 <http://www.digi.com/products/microprocessors/index.jsp>
541
Russell King788c9702009-04-26 14:21:59 +0100542config ARCH_W90X900
543 bool "Nuvoton W90X900 CPU"
544 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100545 select ARCH_REQUIRE_GPIOLIB
wanzongshun0e4a34b2009-06-10 15:50:44 +0100546 select COMMON_CLKDEV
wanzongshun58b53692009-08-14 15:36:44 +0100547 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200548 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100549 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
550 At present, the w90x900 has been renamed nuc900, regarding
551 the ARM series product line, you can login the following
552 link address to know more.
553
554 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
555 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400556
wanzongshuna62e9032009-12-31 15:06:05 +0100557config ARCH_NUC93X
558 bool "Nuvoton NUC93X CPU"
559 select CPU_ARM926T
wanzongshuna62e9032009-12-31 15:06:05 +0100560 select COMMON_CLKDEV
561 help
562 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
563 low-power and high performance MPEG-4/JPEG multimedia controller chip.
564
Erik Gillingc5f80062010-01-21 16:53:02 -0800565config ARCH_TEGRA
566 bool "NVIDIA Tegra"
567 select GENERIC_TIME
568 select GENERIC_CLOCKEVENTS
569 select GENERIC_GPIO
570 select HAVE_CLK
571 select ARCH_HAS_BARRIERS if CACHE_L2X0
572 help
573 This enables support for NVIDIA Tegra based systems (Tegra APX,
574 Tegra 6xx and Tegra 2 series).
575
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100576config ARCH_PNX4008
577 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000578 select CPU_ARM926T
Russell King6985a5a2009-11-20 10:32:41 +0000579 select COMMON_CLKDEV
John Stultz5cfc8ee2010-03-24 00:22:36 +0000580 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100581 help
582 This enables support for Philips PNX4008 mobile platform.
583
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700585 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100586 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500587 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100588 select ARCH_HAS_CPUFREQ
Russell King8c3abc72008-11-08 20:25:21 +0000589 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700590 select ARCH_REQUIRE_GPIOLIB
Eric Miao981d0f32007-07-24 01:22:43 +0100591 select GENERIC_CLOCKEVENTS
Russell Kinga88264c2007-11-12 22:45:16 +0000592 select TICK_ONESHOT
Eric Miaobd5ce432009-01-20 12:06:01 +0800593 select PLAT_PXA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000594 help
eric miao2c8086a2007-09-11 19:13:17 -0700595 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
Russell King788c9702009-04-26 14:21:59 +0100597config ARCH_MSM
598 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500599 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800600 select GENERIC_CLOCKEVENTS
Pavel Machek923a0812010-06-02 11:11:12 -0700601 select ARCH_REQUIRE_GPIOLIB
Eric Miao49cbe782009-01-20 14:15:18 +0800602 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800603 Support for Qualcomm MSM/QSD based systems. This runs on the
604 apps processor of the MSM/QSD and depends on a shared memory
605 interface to the modem processor which runs the baseband
606 stack and controls some vital subsystems
607 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800608
Magnus Dammc793c1b2010-02-05 11:14:49 +0000609config ARCH_SHMOBILE
610 bool "Renesas SH-Mobile"
611 help
612 Support for Renesas's SH-Mobile ARM platforms
613
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614config ARCH_RPC
615 bool "RiscPC"
616 select ARCH_ACORN
617 select FIQ
618 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100619 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100620 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000621 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000622 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100623 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000624 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 help
626 On the Acorn Risc-PC, Linux can support the internal IDE disk and
627 CD-ROM interface, serial and parallel port, and the floppy drive.
628
629config ARCH_SA1100
630 bool "SA1100-based"
Russell Kingc7508152008-10-26 10:55:14 +0000631 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100632 select ISA
Russell King05944d72006-11-30 20:43:51 +0000633 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500634 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100635 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000636 select CPU_FREQ
Russell King3e238be2008-04-14 23:03:10 +0100637 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700638 select HAVE_CLK
Russell King3e238be2008-04-14 23:03:10 +0100639 select TICK_ONESHOT
Michael Buesch7444a722008-07-25 01:46:11 -0700640 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000641 help
642 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
644config ARCH_S3C2410
Ben Dooks63b1f512010-04-30 16:32:26 +0900645 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
David Brownell0a938b92007-03-05 00:30:18 -0800646 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100647 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700648 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000649 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 help
651 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
652 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000653 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654
Ben Dooks63b1f512010-04-30 16:32:26 +0900655 Note, the S3C2416 and the S3C2450 are so close that they even share
656 the same SoC ID code. This means that there is no seperate machine
657 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
658
Ben Dooksa08ab632008-10-21 14:06:39 +0100659config ARCH_S3C64XX
660 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000661 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900662 select CPU_V6
Ben Dooks89f0ce72010-01-26 15:49:15 +0900663 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100664 select HAVE_CLK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900665 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000666 select ARCH_USES_GETTIMEOFFSET
Ben Dooks89c52ed2009-07-30 23:23:24 +0100667 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900668 select ARCH_REQUIRE_GPIOLIB
669 select SAMSUNG_CLKSRC
670 select SAMSUNG_IRQ_VIC_TIMER
671 select SAMSUNG_IRQ_UART
672 select S3C_GPIO_TRACK
673 select S3C_GPIO_PULL_UPDOWN
674 select S3C_GPIO_CFG_S3C24XX
675 select S3C_GPIO_CFG_S3C64XX
676 select S3C_DEV_NAND
677 select USB_ARCH_HAS_OHCI
678 select SAMSUNG_GPIOLIB_4BIT
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
Ben Dooks925c68c2010-05-20 20:48:28 +0900687 select ARCH_USES_GETTIMEOFFSET
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900688 help
689 Samsung S5P6440 CPU based systems
690
Kukjin Kim550db7f2010-01-29 10:19:26 +0900691config ARCH_S5P6442
692 bool "Samsung S5P6442"
693 select CPU_V6
694 select GENERIC_GPIO
695 select HAVE_CLK
Ben Dooks925c68c2010-05-20 20:48:28 +0900696 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim550db7f2010-01-29 10:19:26 +0900697 help
698 Samsung S5P6442 CPU based systems
699
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200700config ARCH_S5PC100
701 bool "Samsung S5PC100"
Byungho Min5a7652f2009-06-23 21:39:42 +0900702 select GENERIC_GPIO
703 select HAVE_CLK
704 select CPU_V7
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100705 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900706 select ARCH_USES_GETTIMEOFFSET
Byungho Min5a7652f2009-06-23 21:39:42 +0900707 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200708 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900709
Kukjin Kim170f4e42010-02-24 16:40:44 +0900710config ARCH_S5PV210
711 bool "Samsung S5PV210/S5PC110"
712 select CPU_V7
713 select GENERIC_GPIO
714 select HAVE_CLK
715 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900716 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim170f4e42010-02-24 16:40:44 +0900717 help
718 Samsung S5PV210/S5PC110 series based systems
719
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720config ARCH_SHARK
721 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000722 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100723 select ISA
724 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100725 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100726 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000727 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000728 help
729 Support for the StrongARM based Digital DNARD machine, also known
730 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731
732config ARCH_LH7A40X
733 bool "Sharp LH7A40X"
Russell Kingc7508152008-10-26 10:55:14 +0000734 select CPU_ARM922T
Russell King4ba3f7c2008-10-01 21:38:23 +0100735 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
John Stultz5cfc8ee2010-03-24 00:22:36 +0000736 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 help
738 Say Y here for systems based on one of the Sharp LH7A40X
739 System on a Chip processors. These CPUs include an ARM922T
740 core with a wide array of integrated devices for
741 hand-held and low-power applications.
742
Linus Walleijd98aac72009-04-27 10:21:46 +0100743config ARCH_U300
744 bool "ST-Ericsson U300 Series"
745 depends on MMU
746 select CPU_ARM926T
Linus Walleijbc581772009-09-15 17:30:37 +0100747 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100748 select ARM_AMBA
749 select ARM_VIC
Linus Walleijd98aac72009-04-27 10:21:46 +0100750 select GENERIC_CLOCKEVENTS
Linus Walleijd98aac72009-04-27 10:21:46 +0100751 select COMMON_CLKDEV
752 select GENERIC_GPIO
753 help
754 Support for ST-Ericsson U300 series mobile platforms.
755
Russell Kingccf50e22010-03-15 19:03:06 +0000756config ARCH_U8500
757 bool "ST-Ericsson U8500 Series"
758 select CPU_V7
759 select ARM_AMBA
Russell Kingccf50e22010-03-15 19:03:06 +0000760 select GENERIC_CLOCKEVENTS
761 select COMMON_CLKDEV
Rabin Vincent94bdc0e2010-03-03 04:54:37 +0100762 select ARCH_REQUIRE_GPIOLIB
Russell Kingccf50e22010-03-15 19:03:06 +0000763 help
764 Support for ST-Ericsson's Ux500 architecture
765
766config ARCH_NOMADIK
767 bool "STMicroelectronics Nomadik"
768 select ARM_AMBA
769 select ARM_VIC
770 select CPU_ARM926T
Russell Kingccf50e22010-03-15 19:03:06 +0000771 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000772 select GENERIC_CLOCKEVENTS
Russell Kingccf50e22010-03-15 19:03:06 +0000773 select ARCH_REQUIRE_GPIOLIB
774 help
775 Support for the Nomadik platform by ST-Ericsson
776
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100777config ARCH_DAVINCI
778 bool "TI DaVinci"
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100779 select GENERIC_CLOCKEVENTS
David Brownelldce11152008-09-07 23:41:04 -0700780 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100781 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700782 select HAVE_IDE
Kevin Hilmanc5b736d2009-03-20 17:29:01 -0700783 select COMMON_CLKDEV
David Brownell20e99692009-05-07 09:31:42 -0700784 select GENERIC_ALLOCATOR
Sekhar Noriae88e052009-11-19 15:34:01 +0530785 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100786 help
787 Support for TI's DaVinci platform.
788
Russell King3b938be2007-05-12 11:25:44 +0100789config ARCH_OMAP
790 bool "TI OMAP"
David Brownell9483a572008-07-23 21:26:48 -0700791 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700792 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100793 select ARCH_HAS_CPUFREQ
Kevin Hilman06cad092007-10-18 23:04:43 -0700794 select GENERIC_CLOCKEVENTS
Sriram9af915d2010-01-29 14:20:05 -0800795 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100796 help
797 Support for TI's OMAP platform (OMAP1 and OMAP2).
798
viresh kumarcee37e52010-04-01 12:31:05 +0100799config PLAT_SPEAR
800 bool "ST SPEAr"
801 select ARM_AMBA
802 select ARCH_REQUIRE_GPIOLIB
803 select COMMON_CLKDEV
804 select GENERIC_CLOCKEVENTS
viresh kumarcee37e52010-04-01 12:31:05 +0100805 select HAVE_CLK
806 help
807 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
808
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809endchoice
810
Russell Kingccf50e22010-03-15 19:03:06 +0000811#
812# This is sorted alphabetically by mach-* pathname. However, plat-*
813# Kconfigs may be included either alphabetically (according to the
814# plat- suffix) or along side the corresponding mach-* source.
815#
Russell King95b8f202010-01-14 11:43:54 +0000816source "arch/arm/mach-aaec2000/Kconfig"
817
818source "arch/arm/mach-at91/Kconfig"
819
820source "arch/arm/mach-bcmring/Kconfig"
821
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822source "arch/arm/mach-clps711x/Kconfig"
823
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300824source "arch/arm/mach-cns3xxx/Kconfig"
825
Russell King95b8f202010-01-14 11:43:54 +0000826source "arch/arm/mach-davinci/Kconfig"
827
828source "arch/arm/mach-dove/Kconfig"
829
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000830source "arch/arm/mach-ep93xx/Kconfig"
831
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832source "arch/arm/mach-footbridge/Kconfig"
833
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200834source "arch/arm/mach-gemini/Kconfig"
835
Russell King95b8f202010-01-14 11:43:54 +0000836source "arch/arm/mach-h720x/Kconfig"
837
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838source "arch/arm/mach-integrator/Kconfig"
839
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100840source "arch/arm/mach-iop32x/Kconfig"
841
842source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843
Dan Williams285f5fa2006-12-07 02:59:39 +0100844source "arch/arm/mach-iop13xx/Kconfig"
845
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846source "arch/arm/mach-ixp4xx/Kconfig"
847
848source "arch/arm/mach-ixp2000/Kconfig"
849
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100850source "arch/arm/mach-ixp23xx/Kconfig"
851
Russell King95b8f202010-01-14 11:43:54 +0000852source "arch/arm/mach-kirkwood/Kconfig"
853
854source "arch/arm/mach-ks8695/Kconfig"
855
856source "arch/arm/mach-lh7a40x/Kconfig"
857
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200858source "arch/arm/mach-loki/Kconfig"
859
Kevin Wells40805942010-07-27 08:49:04 -0700860source "arch/arm/mach-lpc32xx/Kconfig"
861
Russell King95b8f202010-01-14 11:43:54 +0000862source "arch/arm/mach-msm/Kconfig"
863
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200864source "arch/arm/mach-mv78xx0/Kconfig"
865
Russell King95b8f202010-01-14 11:43:54 +0000866source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
Russell King95b8f202010-01-14 11:43:54 +0000868source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800869
Russell King95b8f202010-01-14 11:43:54 +0000870source "arch/arm/mach-nomadik/Kconfig"
871source "arch/arm/plat-nomadik/Kconfig"
872
873source "arch/arm/mach-ns9xxx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874
Russell Kingd91a89102010-02-04 18:13:17 +0000875source "arch/arm/mach-nuc93x/Kconfig"
876
Tony Lindgrend48af152005-07-10 19:58:17 +0100877source "arch/arm/plat-omap/Kconfig"
878
879source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
Tony Lindgren1dbae812005-11-10 14:26:51 +0000881source "arch/arm/mach-omap2/Kconfig"
882
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400883source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400884
Russell King95b8f202010-01-14 11:43:54 +0000885source "arch/arm/mach-pxa/Kconfig"
886source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887
Russell King95b8f202010-01-14 11:43:54 +0000888source "arch/arm/mach-mmp/Kconfig"
889
890source "arch/arm/mach-realview/Kconfig"
891
892source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300893
Ben Dookscf383672009-11-10 00:14:58 +0000894source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100895source "arch/arm/plat-s3c24xx/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900896source "arch/arm/plat-s5p/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100897
viresh kumarcee37e52010-04-01 12:31:05 +0100898source "arch/arm/plat-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100899
900if ARCH_S3C2410
901source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100903source "arch/arm/mach-s3c2412/Kconfig"
Yauhen Kharuzhyf1290a42010-04-28 18:09:01 +0900904source "arch/arm/mach-s3c2416/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100905source "arch/arm/mach-s3c2440/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100906source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100907endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Ben Dooksa08ab632008-10-21 14:06:39 +0100909if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900910source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100911endif
912
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900913source "arch/arm/mach-s5p6440/Kconfig"
914
Kukjin Kim550db7f2010-01-29 10:19:26 +0900915source "arch/arm/mach-s5p6442/Kconfig"
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100916
Byungho Min5a7652f2009-06-23 21:39:42 +0900917source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900918
Kukjin Kim170f4e42010-02-24 16:40:44 +0900919source "arch/arm/mach-s5pv210/Kconfig"
920
Russell King882d01f2010-03-02 23:40:15 +0000921source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922
Russell King882d01f2010-03-02 23:40:15 +0000923source "arch/arm/plat-stmp3xxx/Kconfig"
Brian Swetland9e73c842007-11-26 04:12:13 -0800924
Erik Gillingc5f80062010-01-21 16:53:02 -0800925source "arch/arm/mach-tegra/Kconfig"
926
Russell King95b8f202010-01-14 11:43:54 +0000927source "arch/arm/mach-u300/Kconfig"
Quinn Jensen52c543f2007-07-09 22:06:53 +0100928
Russell King95b8f202010-01-14 11:43:54 +0000929source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
931source "arch/arm/mach-versatile/Kconfig"
932
Russell Kingceade892010-02-11 21:44:53 +0000933source "arch/arm/mach-vexpress/Kconfig"
934
wanzongshun7ec80dd2008-12-03 03:55:38 +0100935source "arch/arm/mach-w90x900/Kconfig"
936
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937# Definitions to make life easier
938config ARCH_ACORN
939 bool
940
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100941config PLAT_IOP
942 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700943 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100944
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400945config PLAT_ORION
946 bool
947
Eric Miaobd5ce432009-01-20 12:06:01 +0800948config PLAT_PXA
949 bool
950
Russell Kingf4b8b312010-01-14 12:48:06 +0000951config PLAT_VERSATILE
952 bool
953
Russell Kinge3887712010-01-14 13:30:16 +0000954config ARM_TIMER_SP804
955 bool
956
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957source arch/arm/mm/Kconfig
958
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100959config IWMMXT
960 bool "Enable iWMMXt support"
Eric Miao40305a52009-02-26 09:34:35 +0800961 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
962 default y if PXA27x || PXA3xx || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100963 help
964 Enable support for iWMMXt context switching at run time if
965 running on a CPU that supports it.
966
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
968config XSCALE_PMU
969 bool
970 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
971 default y
972
Jamie Iles0f4f0672010-02-02 20:23:15 +0100973config CPU_HAS_PMU
Will Deacon8954bb02010-06-21 15:32:54 +0100974 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
975 (!ARCH_OMAP3 || OMAP3_EMU)
Jamie Iles0f4f0672010-02-02 20:23:15 +0100976 default y
977 bool
978
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100979if !MMU
980source "arch/arm/Kconfig-nommu"
981endif
982
Catalin Marinas9cba3cc2009-04-30 17:06:03 +0100983config ARM_ERRATA_411920
984 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
985 depends on CPU_V6 && !SMP
986 help
987 Invalidation of the Instruction Cache operation can
988 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
989 It does not affect the MPCore. This option enables the ARM Ltd.
990 recommended workaround.
991
Catalin Marinas7ce236fc2009-04-30 17:06:09 +0100992config ARM_ERRATA_430973
993 bool "ARM errata: Stale prediction on replaced interworking branch"
994 depends on CPU_V7
995 help
996 This option enables the workaround for the 430973 Cortex-A8
997 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
998 interworking branch is replaced with another code sequence at the
999 same virtual address, whether due to self-modifying code or virtual
1000 to physical address re-mapping, Cortex-A8 does not recover from the
1001 stale interworking branch prediction. This results in Cortex-A8
1002 executing the new code sequence in the incorrect ARM or Thumb state.
1003 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1004 and also flushes the branch target cache at every context switch.
1005 Note that setting specific bits in the ACTLR register may not be
1006 available in non-secure mode.
1007
Catalin Marinas855c5512009-04-30 17:06:15 +01001008config ARM_ERRATA_458693
1009 bool "ARM errata: Processor deadlock when a false hazard is created"
1010 depends on CPU_V7
1011 help
1012 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1013 erratum. For very specific sequences of memory operations, it is
1014 possible for a hazard condition intended for a cache line to instead
1015 be incorrectly associated with a different cache line. This false
1016 hazard might then cause a processor deadlock. The workaround enables
1017 the L1 caching of the NEON accesses and disables the PLD instruction
1018 in the ACTLR register. Note that setting specific bits in the ACTLR
1019 register may not be available in non-secure mode.
1020
Catalin Marinas0516e462009-04-30 17:06:20 +01001021config ARM_ERRATA_460075
1022 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1023 depends on CPU_V7
1024 help
1025 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1026 erratum. Any asynchronous access to the L2 cache may encounter a
1027 situation in which recent store transactions to the L2 cache are lost
1028 and overwritten with stale memory contents from external memory. The
1029 workaround disables the write-allocate mode for the L2 cache via the
1030 ACTLR register. Note that setting specific bits in the ACTLR register
1031 may not be available in non-secure mode.
1032
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001033config PL310_ERRATA_588369
1034 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1035 depends on CACHE_L2X0 && ARCH_OMAP4
1036 help
1037 The PL310 L2 cache controller implements three types of Clean &
1038 Invalidate maintenance operations: by Physical Address
1039 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1040 They are architecturally defined to behave as the execution of a
1041 clean operation followed immediately by an invalidate operation,
1042 both performing to the same memory location. This functionality
1043 is not correctly implemented in PL310 as clean lines are not
1044 invalidated as a result of these operations. Note that this errata
1045 uses Texas Instrument's secure monitor api.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001046endmenu
1047
1048source "arch/arm/common/Kconfig"
1049
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050menu "Bus support"
1051
1052config ARM_AMBA
1053 bool
1054
1055config ISA
1056 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 help
1058 Find out whether you have ISA slots on your motherboard. ISA is the
1059 name of a bus system, i.e. the way the CPU talks to the other stuff
1060 inside your box. Other bus systems are PCI, EISA, MicroChannel
1061 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1062 newer boards don't support it. If you have ISA, say Y, otherwise N.
1063
Russell King065909b2006-01-04 15:44:16 +00001064# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065config ISA_DMA
1066 bool
Russell King065909b2006-01-04 15:44:16 +00001067 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068
Russell King065909b2006-01-04 15:44:16 +00001069# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001070config ISA_DMA_API
1071 bool
Al Viro5cae8412005-05-04 05:39:22 +01001072
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073config PCI
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +04001074 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 -07001075 help
1076 Find out whether you have a PCI motherboard. PCI is the name of a
1077 bus system, i.e. the way the CPU talks to the other stuff inside
1078 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1079 VESA. If you have PCI, say Y, otherwise N.
1080
Anton Vorontsov52882172010-04-19 13:20:49 +01001081config PCI_DOMAINS
1082 bool
1083 depends on PCI
1084
Matthew Wilcox36e23592007-07-10 10:54:40 -06001085config PCI_SYSCALL
1086 def_bool PCI
1087
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088# Select the host bridge type
1089config PCI_HOST_VIA82C505
1090 bool
1091 depends on PCI && ARCH_SHARK
1092 default y
1093
Mike Rapoporta0113a92007-11-25 08:55:34 +01001094config PCI_HOST_ITE8152
1095 bool
1096 depends on PCI && MACH_ARMCORE
1097 default y
1098 select DMABOUNCE
1099
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100source "drivers/pci/Kconfig"
1101
1102source "drivers/pcmcia/Kconfig"
1103
1104endmenu
1105
1106menu "Kernel Features"
1107
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001108source "kernel/time/Kconfig"
1109
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110config SMP
1111 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell King42578c82009-06-11 15:35:00 +01001112 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
Russell King59ac59f2010-02-11 21:56:07 +00001113 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1114 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
Russell Kingbc282482009-05-17 18:58:34 +01001115 depends on GENERIC_CLOCKEVENTS
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001116 select USE_GENERIC_SMP_HELPERS
Russell King59ac59f2010-02-11 21:56:07 +00001117 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118 help
1119 This enables support for systems with more than one CPU. If you have
1120 a system with only one CPU, like most personal computers, say N. If
1121 you have a system with more than one CPU, say Y.
1122
1123 If you say N here, the kernel will run on single and multiprocessor
1124 machines, but will use only one CPU of a multiprocessor machine. If
1125 you say Y here, the kernel will run on many, but not all, single
1126 processor machines. On a single processor machine, the kernel will
1127 run faster if you say N here.
1128
Adrian Bunk03502fa2008-02-03 15:50:21 +02001129 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1131 <http://www.linuxdoc.org/docs.html#howto>.
1132
1133 If you don't know what to do here, say N.
1134
Russell Kinga8cbcd92009-05-16 11:51:14 +01001135config HAVE_ARM_SCU
1136 bool
1137 depends on SMP
1138 help
1139 This option enables support for the ARM system coherency unit
1140
Russell Kingf32f4ce2009-05-16 12:14:21 +01001141config HAVE_ARM_TWD
1142 bool
1143 depends on SMP
1144 help
1145 This options enables support for the ARM timer and watchdog unit
1146
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001147choice
1148 prompt "Memory split"
1149 default VMSPLIT_3G
1150 help
1151 Select the desired split between kernel and user memory.
1152
1153 If you are not absolutely sure what you are doing, leave this
1154 option alone!
1155
1156 config VMSPLIT_3G
1157 bool "3G/1G user/kernel split"
1158 config VMSPLIT_2G
1159 bool "2G/2G user/kernel split"
1160 config VMSPLIT_1G
1161 bool "1G/3G user/kernel split"
1162endchoice
1163
1164config PAGE_OFFSET
1165 hex
1166 default 0x40000000 if VMSPLIT_1G
1167 default 0x80000000 if VMSPLIT_2G
1168 default 0xC0000000
1169
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170config NR_CPUS
1171 int "Maximum number of CPUs (2-32)"
1172 range 2 32
1173 depends on SMP
1174 default "4"
1175
Russell Kinga054a812005-11-02 22:24:33 +00001176config HOTPLUG_CPU
1177 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1178 depends on SMP && HOTPLUG && EXPERIMENTAL
1179 help
1180 Say Y here to experiment with turning CPUs off and on. CPUs
1181 can be controlled through /sys/devices/system/cpu.
1182
Russell King37ee16a2005-11-08 19:08:05 +00001183config LOCAL_TIMERS
1184 bool "Use local timer interrupts"
Russell King42578c82009-06-11 15:35:00 +01001185 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
Will Deaconbde28b82010-07-09 13:52:09 +01001186 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1187 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
Russell King37ee16a2005-11-08 19:08:05 +00001188 default y
Will Deaconbde28b82010-07-09 13:52:09 +01001189 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || ARCH_U8500)
Russell King37ee16a2005-11-08 19:08:05 +00001190 help
1191 Enable support for local timers on SMP platforms, rather then the
1192 legacy IPI broadcast method. Local timers allows the system
1193 accounting to be spread across the timer interval, preventing a
1194 "thundering herd" at every timer tick.
1195
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001196source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
Russell Kingf8065812006-03-02 22:41:59 +00001198config HZ
1199 int
Kukjin Kim170f4e42010-02-24 16:40:44 +09001200 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
Russell Kingbfe65702006-03-04 11:01:53 +00001201 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001202 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001203 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001204 default 100
1205
Catalin Marinas16c79652009-07-24 12:33:02 +01001206config THUMB2_KERNEL
1207 bool "Compile the kernel in Thumb-2 mode"
1208 depends on CPU_V7 && EXPERIMENTAL
1209 select AEABI
1210 select ARM_ASM_UNIFIED
1211 help
1212 By enabling this option, the kernel will be compiled in
1213 Thumb-2 mode. A compiler/assembler that understand the unified
1214 ARM-Thumb syntax is needed.
1215
1216 If unsure, say N.
1217
Catalin Marinas0becb082009-07-24 12:32:53 +01001218config ARM_ASM_UNIFIED
1219 bool
1220
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001221config AEABI
1222 bool "Use the ARM EABI to compile the kernel"
1223 help
1224 This option allows for the kernel to be compiled using the latest
1225 ARM ABI (aka EABI). This is only useful if you are using a user
1226 space environment that is also compiled with EABI.
1227
1228 Since there are major incompatibilities between the legacy ABI and
1229 EABI, especially with regard to structure member alignment, this
1230 option also changes the kernel syscall calling convention to
1231 disambiguate both ABIs and allow for backward compatibility support
1232 (selected with CONFIG_OABI_COMPAT).
1233
1234 To use this you need GCC version 4.0.0 or later.
1235
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001236config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001237 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +00001238 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001239 default y
1240 help
1241 This option preserves the old syscall interface along with the
1242 new (ARM EABI) one. It also provides a compatibility layer to
1243 intercept syscalls that have structure arguments which layout
1244 in memory differs between the legacy ABI and the new ARM EABI
1245 (only for non "thumb" binaries). This option adds a tiny
1246 overhead to all syscalls and produces a slightly larger kernel.
1247 If you know you'll be using only pure EABI user space then you
1248 can say N here. If this option is not selected and you attempt
1249 to execute a legacy ABI binary then the result will be
1250 UNPREDICTABLE (in fact it can be predicted that it won't work
1251 at all). If in doubt say Y.
1252
Mel Gormaneb335752009-05-13 17:34:48 +01001253config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001254 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001255
Russell King05944d72006-11-30 20:43:51 +00001256config ARCH_SPARSEMEM_ENABLE
1257 bool
1258
Russell King07a2f732008-10-01 21:39:58 +01001259config ARCH_SPARSEMEM_DEFAULT
1260 def_bool ARCH_SPARSEMEM_ENABLE
1261
Russell King05944d72006-11-30 20:43:51 +00001262config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001263 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001264
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001265config HIGHMEM
1266 bool "High Memory Support (EXPERIMENTAL)"
1267 depends on MMU && EXPERIMENTAL
1268 help
1269 The address space of ARM processors is only 4 Gigabytes large
1270 and it has to accommodate user address space, kernel address
1271 space as well as some memory mapped IO. That means that, if you
1272 have a large amount of physical memory and/or IO, not all of the
1273 memory can be "permanently mapped" by the kernel. The physical
1274 memory that is not permanently mapped is called "high memory".
1275
1276 Depending on the selected kernel/user memory split, minimum
1277 vmalloc space and actual amount of RAM, you may not need this
1278 option which should result in a slightly faster kernel.
1279
1280 If unsure, say n.
1281
Russell King65cec8e2009-08-17 20:02:06 +01001282config HIGHPTE
1283 bool "Allocate 2nd-level pagetables from highmem"
1284 depends on HIGHMEM
1285 depends on !OUTER_CACHE
1286
Jamie Iles1b8873a2010-02-02 20:25:44 +01001287config HW_PERF_EVENTS
1288 bool "Enable hardware performance counter support for perf events"
Will Deaconfe166142010-04-30 11:37:51 +01001289 depends on PERF_EVENTS && CPU_HAS_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001290 default y
1291 help
1292 Enable hardware performance counter support for perf events. If
1293 disabled, perf events will use software events only.
1294
eric miao354e6f72010-06-25 09:46:09 +01001295config SPARSE_IRQ
eric miaoc1ba6ba2010-07-22 09:55:53 +01001296 def_bool n
eric miao354e6f72010-06-25 09:46:09 +01001297 help
1298 This enables support for sparse irqs. This is useful in general
1299 as most CPUs have a fairly sparse array of IRQ vectors, which
1300 the irq_desc then maps directly on to. Systems with a high
1301 number of off-chip IRQs will want to treat this as
1302 experimental until they have been independently verified.
1303
Dave Hansen3f22ab22005-06-23 00:07:43 -07001304source "mm/Kconfig"
1305
Magnus Dammc1b2d972010-07-05 10:00:11 +01001306config FORCE_MAX_ZONEORDER
1307 int "Maximum zone order" if ARCH_SHMOBILE
1308 range 11 64 if ARCH_SHMOBILE
1309 default "9" if SA1111
1310 default "11"
1311 help
1312 The kernel memory allocator divides physically contiguous memory
1313 blocks into "zones", where each zone is a power of two number of
1314 pages. This option selects the largest power of two that the kernel
1315 keeps in the memory allocator. If you need to allocate very large
1316 blocks of physically contiguous memory, then you may need to
1317 increase this value.
1318
1319 This config option is actually maximum order plus one. For example,
1320 a value of 11 means that the largest free memory block is 2^10 pages.
1321
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322config LEDS
1323 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001324 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001325 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1327 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001328 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001329 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042fb2009-05-30 13:56:13 +01001330 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331 help
1332 If you say Y here, the LEDs on your machine will be used
1333 to provide useful information about your current system status.
1334
1335 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1336 be able to select which LEDs are active using the options below. If
1337 you are compiling a kernel for the EBSA-110 or the LART however, the
1338 red LED will simply flash regularly to indicate that the system is
1339 still functional. It is safe to say Y here if you have a CATS
1340 system, but the driver will do nothing.
1341
1342config LEDS_TIMER
1343 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001344 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1345 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001347 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 default y if ARCH_EBSA110
1349 help
1350 If you say Y here, one of the system LEDs (the green one on the
1351 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1352 will flash regularly to indicate that the system is still
1353 operational. This is mainly useful to kernel hackers who are
1354 debugging unstable kernels.
1355
1356 The LART uses the same LED for both Timer LED and CPU usage LED
1357 functions. You may choose to use both, but the Timer LED function
1358 will overrule the CPU usage LED.
1359
1360config LEDS_CPU
1361 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001362 !ARCH_OMAP) \
1363 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1364 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365 depends on LEDS
1366 help
1367 If you say Y here, the red LED will be used to give a good real
1368 time indication of CPU usage, by lighting whenever the idle task
1369 is not currently executing.
1370
1371 The LART uses the same LED for both Timer LED and CPU usage LED
1372 functions. You may choose to use both, but the Timer LED function
1373 will overrule the CPU usage LED.
1374
1375config ALIGNMENT_TRAP
1376 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001377 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001379 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001381 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001382 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1383 address divisible by 4. On 32-bit ARM processors, these non-aligned
1384 fetch/store instructions will be emulated in software if you say
1385 here, which has a severe performance impact. This is necessary for
1386 correct operation of some network protocols. With an IP-only
1387 configuration it is safe to say N, otherwise say Y.
1388
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001389config UACCESS_WITH_MEMCPY
1390 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1391 depends on MMU && EXPERIMENTAL
1392 default y if CPU_FEROCEON
1393 help
1394 Implement faster copy_to_user and clear_user methods for CPU
1395 cores where a 8-word STM instruction give significantly higher
1396 memory write throughput than a sequence of individual 32bit stores.
1397
1398 A possible side effect is a slight increase in scheduling latency
1399 between threads sharing the same address space if they invoke
1400 such copy operations with large buffers.
1401
1402 However, if the CPU data cache is using a write-allocate mode,
1403 this option is unlikely to provide any performance gain.
1404
Nicolas Pitrec743f382010-05-24 23:55:42 -04001405config CC_STACKPROTECTOR
1406 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1407 help
1408 This option turns on the -fstack-protector GCC feature. This
1409 feature puts, at the beginning of functions, a canary value on
1410 the stack just before the return address, and validates
1411 the value just before actually returning. Stack based buffer
1412 overflows (that need to overwrite this return address) now also
1413 overwrite the canary, which gets detected and the attack is then
1414 neutralized via a kernel panic.
1415 This feature requires gcc version 4.2 or above.
1416
Uwe Kleine-König73a65b32010-01-19 10:13:14 +01001417config DEPRECATED_PARAM_STRUCT
1418 bool "Provide old way to pass kernel parameters"
1419 help
1420 This was deprecated in 2001 and announced to live on for 5 years.
1421 Some old boot loaders still use this way.
1422
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423endmenu
1424
1425menu "Boot options"
1426
1427# Compressed boot loader in ROM. Yes, we really want to ask about
1428# TEXT and BSS so we preserve their values in the config files.
1429config ZBOOT_ROM_TEXT
1430 hex "Compressed ROM boot loader base address"
1431 default "0"
1432 help
1433 The physical address at which the ROM-able zImage is to be
1434 placed in the target. Platforms which normally make use of
1435 ROM-able zImage formats normally set this to a suitable
1436 value in their defconfig file.
1437
1438 If ZBOOT_ROM is not enabled, this has no effect.
1439
1440config ZBOOT_ROM_BSS
1441 hex "Compressed ROM boot loader BSS address"
1442 default "0"
1443 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001444 The base address of an area of read/write memory in the target
1445 for the ROM-able zImage which must be available while the
1446 decompressor is running. It must be large enough to hold the
1447 entire decompressed kernel plus an additional 128 KiB.
1448 Platforms which normally make use of ROM-able zImage formats
1449 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450
1451 If ZBOOT_ROM is not enabled, this has no effect.
1452
1453config ZBOOT_ROM
1454 bool "Compressed boot loader in ROM/flash"
1455 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1456 help
1457 Say Y here if you intend to execute your compressed kernel image
1458 (zImage) directly from ROM or flash. If unsure, say N.
1459
1460config CMDLINE
1461 string "Default kernel command string"
1462 default ""
1463 help
1464 On some architectures (EBSA110 and CATS), there is currently no way
1465 for the boot loader to pass arguments to the kernel. For these
1466 architectures, you should supply some command-line options at build
1467 time by entering them here. As a minimum, you should specify the
1468 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1469
Alexander Holler92d20402010-02-16 19:04:53 +01001470config CMDLINE_FORCE
1471 bool "Always use the default kernel command string"
1472 depends on CMDLINE != ""
1473 help
1474 Always use the default kernel command string, even if the boot
1475 loader passes other arguments to the kernel.
1476 This is useful if you cannot or don't want to change the
1477 command-line options your boot loader passes to the kernel.
1478
1479 If unsure, say N.
1480
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481config XIP_KERNEL
1482 bool "Kernel Execute-In-Place from ROM"
1483 depends on !ZBOOT_ROM
1484 help
1485 Execute-In-Place allows the kernel to run from non-volatile storage
1486 directly addressable by the CPU, such as NOR flash. This saves RAM
1487 space since the text section of the kernel is not loaded from flash
1488 to RAM. Read-write sections, such as the data section and stack,
1489 are still copied to RAM. The XIP kernel is not compressed since
1490 it has to run directly from flash, so it will take more space to
1491 store it. The flash address used to link the kernel object files,
1492 and for storing it, is configuration dependent. Therefore, if you
1493 say Y here, you must know the proper physical address where to
1494 store the kernel image depending on your own flash memory usage.
1495
1496 Also note that the make target becomes "make xipImage" rather than
1497 "make zImage" or "make Image". The final kernel binary to put in
1498 ROM memory will be arch/arm/boot/xipImage.
1499
1500 If unsure, say N.
1501
1502config XIP_PHYS_ADDR
1503 hex "XIP Kernel Physical Location"
1504 depends on XIP_KERNEL
1505 default "0x00080000"
1506 help
1507 This is the physical address in your flash memory the kernel will
1508 be linked for and stored to. This address is dependent on your
1509 own flash usage.
1510
Richard Purdiec587e4a2007-02-06 21:29:00 +01001511config KEXEC
1512 bool "Kexec system call (EXPERIMENTAL)"
1513 depends on EXPERIMENTAL
1514 help
1515 kexec is a system call that implements the ability to shutdown your
1516 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001517 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001518 you can start any kernel with it, not just Linux.
1519
1520 It is an ongoing process to be certain the hardware in a machine
1521 is properly shutdown, so do not be surprised if this code does not
1522 initially work for you. It may help to enable device hotplugging
1523 support.
1524
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001525config ATAGS_PROC
1526 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01001527 depends on KEXEC
1528 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001529 help
1530 Should the atags used to boot the kernel be exported in an "atags"
1531 file in procfs. Useful with kexec.
1532
Eric Miaoe69edc792010-07-05 15:56:50 +02001533config AUTO_ZRELADDR
1534 bool "Auto calculation of the decompressed kernel image address"
1535 depends on !ZBOOT_ROM && !ARCH_U300
1536 help
1537 ZRELADDR is the physical address where the decompressed kernel
1538 image will be placed. If AUTO_ZRELADDR is selected, the address
1539 will be determined at run-time by masking the current IP with
1540 0xf8000000. This assumes the zImage being placed in the first 128MB
1541 from start of memory.
1542
1543config ZRELADDR
1544 hex "Physical address of the decompressed kernel image"
1545 depends on !AUTO_ZRELADDR
1546 default 0x00008000 if ARCH_BCMRING ||\
1547 ARCH_CNS3XXX ||\
1548 ARCH_DOVE ||\
1549 ARCH_EBSA110 ||\
1550 ARCH_FOOTBRIDGE ||\
1551 ARCH_INTEGRATOR ||\
1552 ARCH_IOP13XX ||\
1553 ARCH_IOP33X ||\
1554 ARCH_IXP2000 ||\
1555 ARCH_IXP23XX ||\
1556 ARCH_IXP4XX ||\
1557 ARCH_KIRKWOOD ||\
1558 ARCH_KS8695 ||\
1559 ARCH_LOKI ||\
1560 ARCH_MMP ||\
1561 ARCH_MV78XX0 ||\
1562 ARCH_NOMADIK ||\
1563 ARCH_NUC93X ||\
1564 ARCH_NS9XXX ||\
1565 ARCH_ORION5X ||\
1566 ARCH_SPEAR3XX ||\
1567 ARCH_SPEAR6XX ||\
1568 ARCH_U8500 ||\
1569 ARCH_VERSATILE ||\
1570 ARCH_W90X900
1571 default 0x08008000 if ARCH_MX1 ||\
1572 ARCH_SHARK
1573 default 0x10008000 if ARCH_MSM ||\
1574 ARCH_OMAP1 ||\
1575 ARCH_RPC
1576 default 0x20008000 if ARCH_S5P6440 ||\
1577 ARCH_S5P6442 ||\
1578 ARCH_S5PC100 ||\
1579 ARCH_S5PV210
1580 default 0x30008000 if ARCH_S3C2410 ||\
1581 ARCH_S3C2400 ||\
1582 ARCH_S3C2412 ||\
1583 ARCH_S3C2416 ||\
1584 ARCH_S3C2440 ||\
1585 ARCH_S3C2443
1586 default 0x40008000 if ARCH_STMP378X ||\
1587 ARCH_STMP37XX ||\
1588 ARCH_SH7372 ||\
1589 ARCH_SH7377
1590 default 0x50008000 if ARCH_S3C64XX ||\
1591 ARCH_SH7367
1592 default 0x60008000 if ARCH_VEXPRESS
1593 default 0x80008000 if ARCH_MX25 ||\
1594 ARCH_MX3 ||\
1595 ARCH_NETX ||\
1596 ARCH_OMAP2PLUS ||\
1597 ARCH_PNX4008
1598 default 0x90008000 if ARCH_MX5 ||\
1599 ARCH_MX91231
1600 default 0xa0008000 if ARCH_IOP32X ||\
1601 ARCH_PXA ||\
1602 MACH_MX27
1603 default 0xc0008000 if ARCH_LH7A40X ||\
1604 MACH_MX21
1605 default 0xf0008000 if ARCH_AAEC2000 ||\
1606 ARCH_L7200
1607 default 0xc0028000 if ARCH_CLPS711X
1608 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1609 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1610 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1611 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1612 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1613 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1614 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1615 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1616 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1617 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1618 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1619 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1620 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1621 default 0xc0208000 if ARCH_SA1100 && SA1111
1622 default 0xc0008000 if ARCH_SA1100 && !SA1111
1623 default 0x30108000 if ARCH_S3C2410 && PM_H1940
1624 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1625 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1626 help
1627 ZRELADDR is the physical address where the decompressed kernel
1628 image will be placed. ZRELADDR has to be specified when the
1629 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1630 selected.
1631
Linus Torvalds1da177e2005-04-16 15:20:36 -07001632endmenu
1633
Russell Kingac9d7ef2008-08-18 17:26:00 +01001634menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635
Ben Dooks89c52ed2009-07-30 23:23:24 +01001636if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07001637
1638source "drivers/cpufreq/Kconfig"
1639
1640config CPU_FREQ_SA1100
1641 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642
1643config CPU_FREQ_SA1110
1644 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001645
1646config CPU_FREQ_INTEGRATOR
1647 tristate "CPUfreq driver for ARM Integrator CPUs"
1648 depends on ARCH_INTEGRATOR && CPU_FREQ
1649 default y
1650 help
1651 This enables the CPUfreq driver for ARM Integrator CPUs.
1652
1653 For details, take a look at <file:Documentation/cpu-freq>.
1654
1655 If in doubt, say Y.
1656
Russell King9e2697f2007-12-14 13:30:14 +00001657config CPU_FREQ_PXA
1658 bool
1659 depends on CPU_FREQ && ARCH_PXA && PXA25x
1660 default y
1661 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1662
Mark Brownb3748dd2009-06-15 11:23:20 +01001663config CPU_FREQ_S3C64XX
1664 bool "CPUfreq support for Samsung S3C64XX CPUs"
1665 depends on CPU_FREQ && CPU_S3C6410
1666
Ben Dooks9d56c022009-07-30 23:23:25 +01001667config CPU_FREQ_S3C
1668 bool
1669 help
1670 Internal configuration node for common cpufreq on Samsung SoC
1671
1672config CPU_FREQ_S3C24XX
1673 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1674 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1675 select CPU_FREQ_S3C
1676 help
1677 This enables the CPUfreq driver for the Samsung S3C24XX family
1678 of CPUs.
1679
1680 For details, take a look at <file:Documentation/cpu-freq>.
1681
1682 If in doubt, say N.
1683
1684config CPU_FREQ_S3C24XX_PLL
1685 bool "Support CPUfreq changing of PLL frequency"
1686 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1687 help
1688 Compile in support for changing the PLL frequency from the
1689 S3C24XX series CPUfreq driver. The PLL takes time to settle
1690 after a frequency change, so by default it is not enabled.
1691
1692 This also means that the PLL tables for the selected CPU(s) will
1693 be built which may increase the size of the kernel image.
1694
1695config CPU_FREQ_S3C24XX_DEBUG
1696 bool "Debug CPUfreq Samsung driver core"
1697 depends on CPU_FREQ_S3C24XX
1698 help
1699 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1700
1701config CPU_FREQ_S3C24XX_IODEBUG
1702 bool "Debug CPUfreq Samsung driver IO timing"
1703 depends on CPU_FREQ_S3C24XX
1704 help
1705 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1706
Ben Dookse6d197a2009-07-30 23:23:42 +01001707config CPU_FREQ_S3C24XX_DEBUGFS
1708 bool "Export debugfs for CPUFreq"
1709 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1710 help
1711 Export status information via debugfs.
1712
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713endif
1714
Russell Kingac9d7ef2008-08-18 17:26:00 +01001715source "drivers/cpuidle/Kconfig"
1716
1717endmenu
1718
Linus Torvalds1da177e2005-04-16 15:20:36 -07001719menu "Floating point emulation"
1720
1721comment "At least one emulation must be selected"
1722
1723config FPE_NWFPE
1724 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001725 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726 ---help---
1727 Say Y to include the NWFPE floating point emulator in the kernel.
1728 This is necessary to run most binaries. Linux does not currently
1729 support floating point hardware so you need to say Y here even if
1730 your machine has an FPA or floating point co-processor podule.
1731
1732 You may say N here if you are going to load the Acorn FPEmulator
1733 early in the bootup.
1734
1735config FPE_NWFPE_XP
1736 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001737 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738 help
1739 Say Y to include 80-bit support in the kernel floating-point
1740 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1741 Note that gcc does not generate 80-bit operations by default,
1742 so in most cases this option only enlarges the size of the
1743 floating point emulator without any good reason.
1744
1745 You almost surely want to say N here.
1746
1747config FPE_FASTFPE
1748 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001749 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750 ---help---
1751 Say Y here to include the FAST floating point emulator in the kernel.
1752 This is an experimental much faster emulator which now also has full
1753 precision for the mantissa. It does not support any exceptions.
1754 It is very simple, and approximately 3-6 times faster than NWFPE.
1755
1756 It should be sufficient for most programs. It may be not suitable
1757 for scientific calculations, but you have to check this for yourself.
1758 If you do not feel you need a faster FP emulation you should better
1759 choose NWFPE.
1760
1761config VFP
1762 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001763 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764 help
1765 Say Y to include VFP support code in the kernel. This is needed
1766 if your hardware includes a VFP unit.
1767
1768 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1769 release notes and additional status information.
1770
1771 Say N if your target does not have VFP hardware.
1772
Catalin Marinas25ebee02007-09-25 15:22:24 +01001773config VFPv3
1774 bool
1775 depends on VFP
1776 default y if CPU_V7
1777
Catalin Marinasb5872db2008-01-10 19:16:17 +01001778config NEON
1779 bool "Advanced SIMD (NEON) Extension support"
1780 depends on VFPv3 && CPU_V7
1781 help
1782 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1783 Extension.
1784
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785endmenu
1786
1787menu "Userspace binary formats"
1788
1789source "fs/Kconfig.binfmt"
1790
1791config ARTHUR
1792 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001793 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001794 help
1795 Say Y here to include the kernel code necessary if you want to run
1796 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1797 experimental; if this sounds frightening, say N and sleep in peace.
1798 You can also say M here to compile this support as a module (which
1799 will be called arthur).
1800
1801endmenu
1802
1803menu "Power management options"
1804
Russell Kingeceab4a2005-11-15 11:31:41 +00001805source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806
Johannes Bergf4cb5702007-12-08 02:14:00 +01001807config ARCH_SUSPEND_POSSIBLE
1808 def_bool y
1809
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810endmenu
1811
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001812source "net/Kconfig"
1813
Uwe Kleine-Königac251502009-08-13 21:09:21 +02001814source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001815
1816source "fs/Kconfig"
1817
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818source "arch/arm/Kconfig.debug"
1819
1820source "security/Kconfig"
1821
1822source "crypto/Kconfig"
1823
1824source "lib/Kconfig"