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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)
Rabin Vincent0e341af2010-11-06 23:03:53 +053017 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
Dmitry Baryshkov1fe53262008-07-18 13:30:14 +040018 select HAVE_GENERIC_DMA_COHERENT
Albin Tonnerree7db7b42010-01-08 14:42:43 -080019 select HAVE_KERNEL_GZIP
20 select HAVE_KERNEL_LZO
Albin Tonnerre6e8699f2010-04-03 11:40:28 +010021 select HAVE_KERNEL_LZMA
Peter Zijlstrae360adb2010-10-14 14:01:34 +080022 select HAVE_IRQ_WORK
Jamie Iles7ada1892010-02-02 20:24:58 +010023 select HAVE_PERF_EVENTS
24 select PERF_USE_VMALLOC
Will Deacone513f8b2010-06-25 12:24:53 +010025 select HAVE_REGS_AND_STACK_ACCESS_API
Will Deacon19852e52010-09-03 10:44:33 +010026 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
Rabin Vincented604532010-11-30 17:36:48 +010027 select HAVE_C_RECORDMCOUNT
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 help
29 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000030 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000032 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070033 Europe. There is an ARM Linux project with a web page at
34 <http://www.arm.linux.org.uk/>.
35
Russell King1a189b92008-04-13 21:41:55 +010036config HAVE_PWM
37 bool
38
Ralf Baechle75e71532007-02-09 17:08:58 +000039config SYS_SUPPORTS_APM_EMULATION
40 bool
41
Russell King112f38a42010-12-15 19:23:07 +000042config HAVE_SCHED_CLOCK
43 bool
44
David Brownell0a938b92007-03-05 00:30:18 -080045config GENERIC_GPIO
46 bool
David Brownell0a938b92007-03-05 00:30:18 -080047
John Stultz5cfc8ee2010-03-24 00:22:36 +000048config ARCH_USES_GETTIMEOFFSET
49 bool
50 default n
Kevin Hilman746140c2006-09-22 00:16:30 +010051
Kevin Hilman0567a0c2007-03-13 20:29:24 +010052config GENERIC_CLOCKEVENTS
53 bool
Kevin Hilman0567a0c2007-03-13 20:29:24 +010054
Catalin Marinasa8655e82008-02-04 17:30:57 +010055config GENERIC_CLOCKEVENTS_BROADCAST
56 bool
57 depends on GENERIC_CLOCKEVENTS
Russell King5388a6b2010-07-26 13:19:43 +010058 default y if SMP
Catalin Marinasa8655e82008-02-04 17:30:57 +010059
Linus Walleijbc581772009-09-15 17:30:37 +010060config HAVE_TCM
61 bool
62 select GENERIC_ALLOCATOR
63
Russell Kinge119bff2010-01-10 17:23:29 +000064config HAVE_PROC_CPU
65 bool
66
Al Viro5ea81762007-02-11 15:41:31 +000067config NO_IOPORT
68 bool
Al Viro5ea81762007-02-11 15:41:31 +000069
Linus Torvalds1da177e2005-04-16 15:20:36 -070070config EISA
71 bool
72 ---help---
73 The Extended Industry Standard Architecture (EISA) bus was
74 developed as an open alternative to the IBM MicroChannel bus.
75
76 The EISA bus provided some of the features of the IBM MicroChannel
77 bus while maintaining backward compatibility with cards made for
78 the older ISA bus. The EISA bus saw limited use between 1988 and
79 1995 when it was made obsolete by the PCI bus.
80
81 Say Y here if you are building a kernel for an EISA-based machine.
82
83 Otherwise, say N.
84
85config SBUS
86 bool
87
88config MCA
89 bool
90 help
91 MicroChannel Architecture is found in some IBM PS/2 machines and
92 laptops. It is a bus system similar to PCI or ISA. See
93 <file:Documentation/mca.txt> (and especially the web page given
94 there) before attempting to build an MCA bus kernel.
95
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010096config GENERIC_HARDIRQS
97 bool
98 default y
99
Russell Kingf16fb1e2007-04-28 09:59:37 +0100100config STACKTRACE_SUPPORT
101 bool
102 default y
103
Nicolas Pitref76e9152008-04-24 01:31:46 -0400104config HAVE_LATENCYTOP_SUPPORT
105 bool
106 depends on !SMP
107 default y
108
Russell Kingf16fb1e2007-04-28 09:59:37 +0100109config LOCKDEP_SUPPORT
110 bool
111 default y
112
Russell King7ad1bcb2006-08-27 12:07:02 +0100113config TRACE_IRQFLAGS_SUPPORT
114 bool
115 default y
116
Thomas Gleixner4a2581a2006-07-01 22:30:09 +0100117config HARDIRQS_SW_RESEND
118 bool
119 default y
120
121config GENERIC_IRQ_PROBE
122 bool
123 default y
124
Nick Piggin95c354f2008-01-30 13:31:20 +0100125config GENERIC_LOCKBREAK
126 bool
127 default y
128 depends on SMP && PREEMPT
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130config RWSEM_GENERIC_SPINLOCK
131 bool
132 default y
133
134config RWSEM_XCHGADD_ALGORITHM
135 bool
136
David Howellsf0d1b0b2006-12-08 02:37:49 -0800137config ARCH_HAS_ILOG2_U32
138 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800139
140config ARCH_HAS_ILOG2_U64
141 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800142
Ben Dooks89c52ed2009-07-30 23:23:24 +0100143config ARCH_HAS_CPUFREQ
144 bool
145 help
146 Internal node to signify that the ARCH has CPUFREQ support
147 and that the relevant menu configurations are displayed for
148 it.
149
Kevin Hilmanc7b0aff2010-10-01 22:13:47 +0100150config ARCH_HAS_CPU_IDLE_WAIT
151 def_bool y
152
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800153config GENERIC_HWEIGHT
154 bool
155 default y
156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157config GENERIC_CALIBRATE_DELAY
158 bool
159 default y
160
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100161config ARCH_MAY_HAVE_PC_FDC
162 bool
163
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800164config ZONE_DMA
165 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800166
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800167config NEED_DMA_MAP_STATE
168 def_bool y
169
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170config GENERIC_ISA_DMA
171 bool
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173config FIQ
174 bool
175
Al Viro034d2f52005-12-19 16:27:59 -0500176config ARCH_MTD_XIP
177 bool
178
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100179config GENERIC_HARDIRQS_NO__DO_IRQ
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100180 def_bool y
181
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100182config ARM_L1_CACHE_SHIFT_6
183 bool
184 help
185 Setting ARM L1 cache line size to 64 Bytes.
186
Hyok S. Choic760fc12006-03-27 15:18:50 +0100187config VECTORS_BASE
188 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900189 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100190 default DRAM_BASE if REMAP_VECTORS_TO_RAM
191 default 0x00000000
192 help
193 The base address of exception vectors.
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195source "init/Kconfig"
196
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700197source "kernel/Kconfig.freezer"
198
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199menu "System Type"
200
Hyok S. Choi3c427972009-07-24 12:35:00 +0100201config MMU
202 bool "MMU-based Paged Memory Management Support"
203 default y
204 help
205 Select if you want MMU-based virtualised addressing space
206 support by paged memory management. If unsure, say 'Y'.
207
Russell Kingccf50e22010-03-15 19:03:06 +0000208#
209# The "ARM system type" choice list is ordered alphabetically by option
210# text. Please add new entries in the option alphabetic order.
211#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212choice
213 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000214 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100216config ARCH_AAEC2000
217 bool "Agilent AAEC-2000 based"
Russell Kingc7508152008-10-26 10:55:14 +0000218 select CPU_ARM920T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100219 select ARM_AMBA
David Brownell9483a572008-07-23 21:26:48 -0700220 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000221 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100222 help
223 This enables support for systems based on the Agilent AAEC-2000
224
225config ARCH_INTEGRATOR
226 bool "ARM Ltd. Integrator family"
227 select ARM_AMBA
Ben Dooks89c52ed2009-07-30 23:23:24 +0100228 select ARCH_HAS_CPUFREQ
Russell Kingd72fbdf2008-11-08 20:08:08 +0000229 select COMMON_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000230 select ICST
Russell King13edd862010-01-15 21:49:23 +0000231 select GENERIC_CLOCKEVENTS
Russell Kingf4b8b312010-01-14 12:48:06 +0000232 select PLAT_VERSATILE
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100233 help
234 Support for ARM's Integrator platform.
235
236config ARCH_REALVIEW
237 bool "ARM Ltd. RealView family"
238 select ARM_AMBA
Russell Kingcf30fb42008-11-08 20:05:55 +0000239 select COMMON_CLKDEV
Russell King1da0c892010-12-15 21:56:47 +0000240 select HAVE_SCHED_CLOCK
Russell Kingc5a0adb2010-01-16 20:16:10 +0000241 select ICST
Catalin Marinasae30cea2008-02-04 17:26:55 +0100242 select GENERIC_CLOCKEVENTS
Russell Kingeb7fffa2009-07-05 22:41:31 +0100243 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000244 select PLAT_VERSATILE
Russell Kinge3887712010-01-14 13:30:16 +0000245 select ARM_TIMER_SP804
Colin Tuckleyb56ba8a2010-02-24 15:23:10 +0100246 select GPIO_PL061 if GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100247 help
248 This enables support for ARM Ltd RealView boards.
249
250config ARCH_VERSATILE
251 bool "ARM Ltd. Versatile family"
252 select ARM_AMBA
253 select ARM_VIC
Russell King71a06da2008-11-08 20:13:53 +0000254 select COMMON_CLKDEV
Russell King1da0c892010-12-15 21:56:47 +0000255 select HAVE_SCHED_CLOCK
Russell Kingc5a0adb2010-01-16 20:16:10 +0000256 select ICST
Kevin Hilman89df1272007-03-08 20:30:38 +0100257 select GENERIC_CLOCKEVENTS
Russell Kingbbeddc42009-07-05 22:43:01 +0100258 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000259 select PLAT_VERSATILE
Russell Kinge3887712010-01-14 13:30:16 +0000260 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100261 help
262 This enables support for ARM Ltd Versatile board.
263
Russell Kingceade892010-02-11 21:44:53 +0000264config ARCH_VEXPRESS
265 bool "ARM Ltd. Versatile Express family"
266 select ARCH_WANT_OPTIONAL_GPIOLIB
267 select ARM_AMBA
268 select ARM_TIMER_SP804
269 select COMMON_CLKDEV
270 select GENERIC_CLOCKEVENTS
Russell Kingceade892010-02-11 21:44:53 +0000271 select HAVE_CLK
Russell King0af85dd2010-12-15 21:58:50 +0000272 select HAVE_SCHED_CLOCK
Russell Kingceade892010-02-11 21:44:53 +0000273 select ICST
274 select PLAT_VERSATILE
275 help
276 This enables support for the ARM Ltd Versatile Express boards.
277
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100278config ARCH_AT91
279 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100280 select ARCH_REQUIRE_GPIOLIB
David Brownell93686ae2008-07-28 15:46:22 -0700281 select HAVE_CLK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100282 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100283 This enables support for systems based on the Atmel AT91RM9200,
284 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100285
Russell Kingccf50e22010-03-15 19:03:06 +0000286config ARCH_BCMRING
287 bool "Broadcom BCMRING"
288 depends on MMU
289 select CPU_V6
290 select ARM_AMBA
291 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000292 select GENERIC_CLOCKEVENTS
293 select ARCH_WANT_OPTIONAL_GPIOLIB
294 help
295 Support for Broadcom's BCMRing platform.
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100298 bool "Cirrus Logic CLPS711x/EP721x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000299 select CPU_ARM720T
John Stultz5cfc8ee2010-03-24 00:22:36 +0000300 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000301 help
302 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300304config ARCH_CNS3XXX
305 bool "Cavium Networks CNS3XXX family"
306 select CPU_V6
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300307 select GENERIC_CLOCKEVENTS
308 select ARM_GIC
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +0400309 select PCI_DOMAINS if PCI
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300310 help
311 Support for Cavium Networks CNS3XXX platform.
312
Russell King788c9702009-04-26 14:21:59 +0100313config ARCH_GEMINI
314 bool "Cortina Systems Gemini"
315 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100316 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000317 select ARCH_USES_GETTIMEOFFSET
Russell King788c9702009-04-26 14:21:59 +0100318 help
319 Support for the Cortina Systems Gemini family SoCs
320
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321config ARCH_EBSA110
322 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000323 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100324 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000325 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000326 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 help
328 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000329 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 Ethernet interface, two PCMCIA sockets, two serial ports and a
331 parallel port.
332
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000333config ARCH_EP93XX
334 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000335 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000336 select ARM_AMBA
337 select ARM_VIC
Russell Kingae696fd2008-11-30 17:11:49 +0000338 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700339 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100340 select ARCH_HAS_HOLES_MEMORYMODEL
John Stultz5cfc8ee2010-03-24 00:22:36 +0000341 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000342 help
343 This enables support for the Cirrus EP93xx series of CPUs.
344
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345config ARCH_FOOTBRIDGE
346 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000347 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 select FOOTBRIDGE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000349 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000350 help
351 Support for systems based on the DC21285 companion chip
352 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
Russell King788c9702009-04-26 14:21:59 +0100354config ARCH_MXC
355 bool "Freescale MXC/iMX-based"
Russell King788c9702009-04-26 14:21:59 +0100356 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100357 select ARCH_REQUIRE_GPIOLIB
Uwe Kleine-König03e09cd2010-02-15 17:10:42 +0100358 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100359 help
360 Support for Freescale MXC/iMX-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 King5b0d4952010-12-15 21:23:13 +0000444 select HAVE_SCHED_CLOCK
Russell King485bdde2008-10-17 14:00:43 +0100445 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100446 help
Russell King3b938be2007-05-12 11:25:44 +0100447 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100448
Saeed Bisharaedabd382009-08-06 15:12:43 +0300449config ARCH_DOVE
450 bool "Marvell Dove"
451 select PCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300452 select ARCH_REQUIRE_GPIOLIB
Saeed Bisharaedabd382009-08-06 15:12:43 +0300453 select GENERIC_CLOCKEVENTS
454 select PLAT_ORION
455 help
456 Support for the Marvell Dove SoC 88AP510
457
Saeed Bishara651c74c2008-06-22 22:45:06 +0200458config ARCH_KIRKWOOD
459 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000460 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200461 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700462 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200463 select GENERIC_CLOCKEVENTS
464 select PLAT_ORION
465 help
466 Support for the following Marvell Kirkwood series SoCs:
467 88F6180, 88F6192 and 88F6281.
468
Russell King788c9702009-04-26 14:21:59 +0100469config ARCH_LOKI
470 bool "Marvell Loki (88RC8480)"
471 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100472 select GENERIC_CLOCKEVENTS
473 select PLAT_ORION
474 help
475 Support for the Marvell Loki (88RC8480) SoC.
476
Kevin Wells40805942010-07-27 08:49:04 -0700477config ARCH_LPC32XX
478 bool "NXP LPC32XX"
479 select CPU_ARM926T
480 select ARCH_REQUIRE_GPIOLIB
481 select HAVE_IDE
482 select ARM_AMBA
483 select USB_ARCH_HAS_OHCI
484 select COMMON_CLKDEV
485 select GENERIC_TIME
486 select GENERIC_CLOCKEVENTS
487 help
488 Support for the NXP LPC32XX family of processors
489
Russell King788c9702009-04-26 14:21:59 +0100490config ARCH_MV78XX0
491 bool "Marvell MV78xx0"
492 select CPU_FEROCEON
493 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700494 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100495 select GENERIC_CLOCKEVENTS
496 select PLAT_ORION
497 help
498 Support for the following Marvell MV78xx0 series SoCs:
499 MV781x0, MV782x0.
500
501config ARCH_ORION5X
502 bool "Marvell Orion"
503 depends on MMU
504 select CPU_FEROCEON
505 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700506 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100507 select GENERIC_CLOCKEVENTS
508 select PLAT_ORION
509 help
510 Support for the following Marvell Orion 5x series SoCs:
511 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
512 Orion-2 (5281), Orion-1-90 (6183).
513
514config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500515 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100516 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100517 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100518 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100519 select GENERIC_CLOCKEVENTS
Russell King28bb7bc2010-12-15 21:46:48 +0000520 select HAVE_SCHED_CLOCK
Russell King788c9702009-04-26 14:21:59 +0100521 select TICK_ONESHOT
522 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400523 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100524 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500525 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100526
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100527config ARCH_KS8695
528 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000529 select CPU_ARM922T
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100530 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000531 select ARCH_USES_GETTIMEOFFSET
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100532 help
533 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
534 System-on-Chip devices.
535
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100536config ARCH_NS9XXX
537 bool "NetSilicon NS9xxx"
Russell Kingc7508152008-10-26 10:55:14 +0000538 select CPU_ARM926T
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100539 select GENERIC_GPIO
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100540 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700541 select HAVE_CLK
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100542 help
543 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
544 System.
545
546 <http://www.digi.com/products/microprocessors/index.jsp>
547
Russell King788c9702009-04-26 14:21:59 +0100548config ARCH_W90X900
549 bool "Nuvoton W90X900 CPU"
550 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100551 select ARCH_REQUIRE_GPIOLIB
wanzongshun0e4a34b2009-06-10 15:50:44 +0100552 select COMMON_CLKDEV
wanzongshun58b53692009-08-14 15:36:44 +0100553 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200554 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100555 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
556 At present, the w90x900 has been renamed nuc900, regarding
557 the ARM series product line, you can login the following
558 link address to know more.
559
560 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
561 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400562
wanzongshuna62e9032009-12-31 15:06:05 +0100563config ARCH_NUC93X
564 bool "Nuvoton NUC93X CPU"
565 select CPU_ARM926T
wanzongshuna62e9032009-12-31 15:06:05 +0100566 select COMMON_CLKDEV
567 help
568 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
569 low-power and high performance MPEG-4/JPEG multimedia controller chip.
570
Erik Gillingc5f80062010-01-21 16:53:02 -0800571config ARCH_TEGRA
572 bool "NVIDIA Tegra"
573 select GENERIC_TIME
574 select GENERIC_CLOCKEVENTS
575 select GENERIC_GPIO
576 select HAVE_CLK
Russell Kinge3f4c0a2010-12-15 21:49:42 +0000577 select HAVE_SCHED_CLOCK
Colin Crossd8611962010-01-28 16:40:29 -0800578 select COMMON_CLKDEV
Erik Gillingc5f80062010-01-21 16:53:02 -0800579 select ARCH_HAS_BARRIERS if CACHE_L2X0
Colin Cross7056d422010-04-22 20:30:13 -0700580 select ARCH_HAS_CPUFREQ
Erik Gillingc5f80062010-01-21 16:53:02 -0800581 help
582 This enables support for NVIDIA Tegra based systems (Tegra APX,
583 Tegra 6xx and Tegra 2 series).
584
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100585config ARCH_PNX4008
586 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000587 select CPU_ARM926T
Russell King6985a5a2009-11-20 10:32:41 +0000588 select COMMON_CLKDEV
John Stultz5cfc8ee2010-03-24 00:22:36 +0000589 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100590 help
591 This enables support for Philips PNX4008 mobile platform.
592
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700594 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100595 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500596 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100597 select ARCH_HAS_CPUFREQ
Russell King8c3abc72008-11-08 20:25:21 +0000598 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700599 select ARCH_REQUIRE_GPIOLIB
Eric Miao981d0f32007-07-24 01:22:43 +0100600 select GENERIC_CLOCKEVENTS
Russell King7ce83012010-12-15 21:48:15 +0000601 select HAVE_SCHED_CLOCK
Russell Kinga88264c2007-11-12 22:45:16 +0000602 select TICK_ONESHOT
Eric Miaobd5ce432009-01-20 12:06:01 +0800603 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800604 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000605 help
eric miao2c8086a2007-09-11 19:13:17 -0700606 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607
Russell King788c9702009-04-26 14:21:59 +0100608config ARCH_MSM
609 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500610 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800611 select GENERIC_CLOCKEVENTS
Pavel Machek923a0812010-06-02 11:11:12 -0700612 select ARCH_REQUIRE_GPIOLIB
Eric Miao49cbe782009-01-20 14:15:18 +0800613 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800614 Support for Qualcomm MSM/QSD based systems. This runs on the
615 apps processor of the MSM/QSD and depends on a shared memory
616 interface to the modem processor which runs the baseband
617 stack and controls some vital subsystems
618 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800619
Magnus Dammc793c1b2010-02-05 11:14:49 +0000620config ARCH_SHMOBILE
621 bool "Renesas SH-Mobile"
622 help
623 Support for Renesas's SH-Mobile ARM platforms
624
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625config ARCH_RPC
626 bool "RiscPC"
627 select ARCH_ACORN
628 select FIQ
629 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100630 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100631 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000632 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000633 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100634 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000635 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 help
637 On the Acorn Risc-PC, Linux can support the internal IDE disk and
638 CD-ROM interface, serial and parallel port, and the floppy drive.
639
640config ARCH_SA1100
641 bool "SA1100-based"
Russell Kingc7508152008-10-26 10:55:14 +0000642 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100643 select ISA
Russell King05944d72006-11-30 20:43:51 +0000644 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500645 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100646 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000647 select CPU_FREQ
Russell King3e238be2008-04-14 23:03:10 +0100648 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700649 select HAVE_CLK
Russell King5094b922010-12-15 21:49:06 +0000650 select HAVE_SCHED_CLOCK
Russell King3e238be2008-04-14 23:03:10 +0100651 select TICK_ONESHOT
Michael Buesch7444a722008-07-25 01:46:11 -0700652 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000653 help
654 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655
656config ARCH_S3C2410
Ben Dooks63b1f512010-04-30 16:32:26 +0900657 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
David Brownell0a938b92007-03-05 00:30:18 -0800658 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100659 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700660 select HAVE_CLK
John Stultz5cfc8ee2010-03-24 00:22:36 +0000661 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900662 select HAVE_S3C2410_I2C if I2C
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 help
664 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
665 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000666 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667
Ben Dooks63b1f512010-04-30 16:32:26 +0900668 Note, the S3C2416 and the S3C2450 are so close that they even share
669 the same SoC ID code. This means that there is no seperate machine
670 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
671
Ben Dooksa08ab632008-10-21 14:06:39 +0100672config ARCH_S3C64XX
673 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000674 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900675 select CPU_V6
Ben Dooks89f0ce72010-01-26 15:49:15 +0900676 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100677 select HAVE_CLK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900678 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000679 select ARCH_USES_GETTIMEOFFSET
Ben Dooks89c52ed2009-07-30 23:23:24 +0100680 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900681 select ARCH_REQUIRE_GPIOLIB
682 select SAMSUNG_CLKSRC
683 select SAMSUNG_IRQ_VIC_TIMER
684 select SAMSUNG_IRQ_UART
685 select S3C_GPIO_TRACK
686 select S3C_GPIO_PULL_UPDOWN
687 select S3C_GPIO_CFG_S3C24XX
688 select S3C_GPIO_CFG_S3C64XX
689 select S3C_DEV_NAND
690 select USB_ARCH_HAS_OHCI
691 select SAMSUNG_GPIOLIB_4BIT
Kukjin Kim20676c12010-11-13 16:08:32 +0900692 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900693 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Ben Dooksa08ab632008-10-21 14:06:39 +0100694 help
695 Samsung S3C64XX series based systems
696
Kukjin Kim49b7a492010-09-07 15:47:18 +0900697config ARCH_S5P64X0
698 bool "Samsung S5P6440 S5P6450"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900699 select CPU_V6
700 select GENERIC_GPIO
701 select HAVE_CLK
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900702 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Ben Dooks925c68c2010-05-20 20:48:28 +0900703 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900704 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900705 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900706 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900707 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
708 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900709
Kukjin Kim550db7f2010-01-29 10:19:26 +0900710config ARCH_S5P6442
711 bool "Samsung S5P6442"
712 select CPU_V6
713 select GENERIC_GPIO
714 select HAVE_CLK
Ben Dooks925c68c2010-05-20 20:48:28 +0900715 select ARCH_USES_GETTIMEOFFSET
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900716 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim550db7f2010-01-29 10:19:26 +0900717 help
718 Samsung S5P6442 CPU based systems
719
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200720config ARCH_S5PC100
721 bool "Samsung S5PC100"
Byungho Min5a7652f2009-06-23 21:39:42 +0900722 select GENERIC_GPIO
723 select HAVE_CLK
724 select CPU_V7
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100725 select ARM_L1_CACHE_SHIFT_6
Ben Dooks925c68c2010-05-20 20:48:28 +0900726 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900727 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900728 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900729 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Byungho Min5a7652f2009-06-23 21:39:42 +0900730 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200731 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900732
Kukjin Kim170f4e42010-02-24 16:40:44 +0900733config ARCH_S5PV210
734 bool "Samsung S5PV210/S5PC110"
735 select CPU_V7
Kyungmin Parkeecb6a82010-09-29 21:29:27 +0900736 select ARCH_SPARSEMEM_ENABLE
Kukjin Kim170f4e42010-02-24 16:40:44 +0900737 select GENERIC_GPIO
738 select HAVE_CLK
739 select ARM_L1_CACHE_SHIFT_6
Jaecheol Leed8144ae2010-10-12 09:23:19 +0900740 select ARCH_HAS_CPUFREQ
Ben Dooks925c68c2010-05-20 20:48:28 +0900741 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900742 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900743 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900744 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim170f4e42010-02-24 16:40:44 +0900745 help
746 Samsung S5PV210/S5PC110 series based systems
747
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900748config ARCH_S5PV310
749 bool "Samsung S5PV310/S5PC210"
750 select CPU_V7
Kyungmin Parkf567fa62010-09-29 21:33:29 +0900751 select ARCH_SPARSEMEM_ENABLE
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900752 select GENERIC_GPIO
753 select HAVE_CLK
754 select GENERIC_CLOCKEVENTS
Kukjin Kim754961a2010-11-13 16:11:46 +0900755 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kim20676c12010-11-13 16:08:32 +0900756 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900757 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900758 help
759 Samsung S5PV310 series based systems
760
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761config ARCH_SHARK
762 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000763 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100764 select ISA
765 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100766 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100767 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000768 select ARCH_USES_GETTIMEOFFSET
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000769 help
770 Support for the StrongARM based Digital DNARD machine, also known
771 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772
Hans J. Koch83ef3332010-09-17 18:13:56 +0200773config ARCH_TCC_926
774 bool "Telechips TCC ARM926-based systems"
775 select CPU_ARM926T
776 select HAVE_CLK
777 select COMMON_CLKDEV
778 select GENERIC_CLOCKEVENTS
779 help
780 Support for Telechips TCC ARM926-based systems.
781
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782config ARCH_LH7A40X
783 bool "Sharp LH7A40X"
Russell Kingc7508152008-10-26 10:55:14 +0000784 select CPU_ARM922T
Russell King4ba3f7c2008-10-01 21:38:23 +0100785 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
John Stultz5cfc8ee2010-03-24 00:22:36 +0000786 select ARCH_USES_GETTIMEOFFSET
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 help
788 Say Y here for systems based on one of the Sharp LH7A40X
789 System on a Chip processors. These CPUs include an ARM922T
790 core with a wide array of integrated devices for
791 hand-held and low-power applications.
792
Linus Walleijd98aac72009-04-27 10:21:46 +0100793config ARCH_U300
794 bool "ST-Ericsson U300 Series"
795 depends on MMU
796 select CPU_ARM926T
Russell King5c21b7c2010-12-15 21:50:14 +0000797 select HAVE_SCHED_CLOCK
Linus Walleijbc581772009-09-15 17:30:37 +0100798 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100799 select ARM_AMBA
800 select ARM_VIC
Linus Walleijd98aac72009-04-27 10:21:46 +0100801 select GENERIC_CLOCKEVENTS
Linus Walleijd98aac72009-04-27 10:21:46 +0100802 select COMMON_CLKDEV
803 select GENERIC_GPIO
804 help
805 Support for ST-Ericsson U300 series mobile platforms.
806
Russell Kingccf50e22010-03-15 19:03:06 +0000807config ARCH_U8500
808 bool "ST-Ericsson U8500 Series"
809 select CPU_V7
810 select ARM_AMBA
Russell Kingccf50e22010-03-15 19:03:06 +0000811 select GENERIC_CLOCKEVENTS
812 select COMMON_CLKDEV
Rabin Vincent94bdc0e2010-03-03 04:54:37 +0100813 select ARCH_REQUIRE_GPIOLIB
Russell Kingccf50e22010-03-15 19:03:06 +0000814 help
815 Support for ST-Ericsson's Ux500 architecture
816
817config ARCH_NOMADIK
818 bool "STMicroelectronics Nomadik"
819 select ARM_AMBA
820 select ARM_VIC
821 select CPU_ARM926T
Russell Kingccf50e22010-03-15 19:03:06 +0000822 select COMMON_CLKDEV
Russell Kingccf50e22010-03-15 19:03:06 +0000823 select GENERIC_CLOCKEVENTS
Russell Kingccf50e22010-03-15 19:03:06 +0000824 select ARCH_REQUIRE_GPIOLIB
825 help
826 Support for the Nomadik platform by ST-Ericsson
827
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100828config ARCH_DAVINCI
829 bool "TI DaVinci"
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100830 select GENERIC_CLOCKEVENTS
David Brownelldce11152008-09-07 23:41:04 -0700831 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100832 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700833 select HAVE_IDE
Kevin Hilmanc5b736d2009-03-20 17:29:01 -0700834 select COMMON_CLKDEV
David Brownell20e99692009-05-07 09:31:42 -0700835 select GENERIC_ALLOCATOR
Sekhar Noriae88e052009-11-19 15:34:01 +0530836 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100837 help
838 Support for TI's DaVinci platform.
839
Russell King3b938be2007-05-12 11:25:44 +0100840config ARCH_OMAP
841 bool "TI OMAP"
David Brownell9483a572008-07-23 21:26:48 -0700842 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700843 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100844 select ARCH_HAS_CPUFREQ
Kevin Hilman06cad092007-10-18 23:04:43 -0700845 select GENERIC_CLOCKEVENTS
Russell Kingdc548fb2010-12-15 21:53:51 +0000846 select HAVE_SCHED_CLOCK
Sriram9af915d2010-01-29 14:20:05 -0800847 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100848 help
Lennert Buytenhek6e457bb2010-09-22 20:40:57 +0200849 Support for TI's OMAP platform (OMAP1/2/3/4).
Russell King3b938be2007-05-12 11:25:44 +0100850
viresh kumarcee37e52010-04-01 12:31:05 +0100851config PLAT_SPEAR
852 bool "ST SPEAr"
853 select ARM_AMBA
854 select ARCH_REQUIRE_GPIOLIB
855 select COMMON_CLKDEV
856 select GENERIC_CLOCKEVENTS
viresh kumarcee37e52010-04-01 12:31:05 +0100857 select HAVE_CLK
858 help
859 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
860
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861endchoice
862
Russell Kingccf50e22010-03-15 19:03:06 +0000863#
864# This is sorted alphabetically by mach-* pathname. However, plat-*
865# Kconfigs may be included either alphabetically (according to the
866# plat- suffix) or along side the corresponding mach-* source.
867#
Russell King95b8f202010-01-14 11:43:54 +0000868source "arch/arm/mach-aaec2000/Kconfig"
869
870source "arch/arm/mach-at91/Kconfig"
871
872source "arch/arm/mach-bcmring/Kconfig"
873
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874source "arch/arm/mach-clps711x/Kconfig"
875
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300876source "arch/arm/mach-cns3xxx/Kconfig"
877
Russell King95b8f202010-01-14 11:43:54 +0000878source "arch/arm/mach-davinci/Kconfig"
879
880source "arch/arm/mach-dove/Kconfig"
881
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000882source "arch/arm/mach-ep93xx/Kconfig"
883
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884source "arch/arm/mach-footbridge/Kconfig"
885
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200886source "arch/arm/mach-gemini/Kconfig"
887
Russell King95b8f202010-01-14 11:43:54 +0000888source "arch/arm/mach-h720x/Kconfig"
889
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890source "arch/arm/mach-integrator/Kconfig"
891
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100892source "arch/arm/mach-iop32x/Kconfig"
893
894source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895
Dan Williams285f5fa2006-12-07 02:59:39 +0100896source "arch/arm/mach-iop13xx/Kconfig"
897
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898source "arch/arm/mach-ixp4xx/Kconfig"
899
900source "arch/arm/mach-ixp2000/Kconfig"
901
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100902source "arch/arm/mach-ixp23xx/Kconfig"
903
Russell King95b8f202010-01-14 11:43:54 +0000904source "arch/arm/mach-kirkwood/Kconfig"
905
906source "arch/arm/mach-ks8695/Kconfig"
907
908source "arch/arm/mach-lh7a40x/Kconfig"
909
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200910source "arch/arm/mach-loki/Kconfig"
911
Kevin Wells40805942010-07-27 08:49:04 -0700912source "arch/arm/mach-lpc32xx/Kconfig"
913
Russell King95b8f202010-01-14 11:43:54 +0000914source "arch/arm/mach-msm/Kconfig"
915
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200916source "arch/arm/mach-mv78xx0/Kconfig"
917
Russell King95b8f202010-01-14 11:43:54 +0000918source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
Russell King95b8f202010-01-14 11:43:54 +0000920source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800921
Russell King95b8f202010-01-14 11:43:54 +0000922source "arch/arm/mach-nomadik/Kconfig"
923source "arch/arm/plat-nomadik/Kconfig"
924
925source "arch/arm/mach-ns9xxx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926
Russell Kingd91a89102010-02-04 18:13:17 +0000927source "arch/arm/mach-nuc93x/Kconfig"
928
Tony Lindgrend48af152005-07-10 19:58:17 +0100929source "arch/arm/plat-omap/Kconfig"
930
931source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932
Tony Lindgren1dbae812005-11-10 14:26:51 +0000933source "arch/arm/mach-omap2/Kconfig"
934
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400935source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400936
Russell King95b8f202010-01-14 11:43:54 +0000937source "arch/arm/mach-pxa/Kconfig"
938source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939
Russell King95b8f202010-01-14 11:43:54 +0000940source "arch/arm/mach-mmp/Kconfig"
941
942source "arch/arm/mach-realview/Kconfig"
943
944source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300945
Ben Dookscf383672009-11-10 00:14:58 +0000946source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100947source "arch/arm/plat-s3c24xx/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900948source "arch/arm/plat-s5p/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100949
viresh kumarcee37e52010-04-01 12:31:05 +0100950source "arch/arm/plat-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100951
Hans J. Koch83ef3332010-09-17 18:13:56 +0200952source "arch/arm/plat-tcc/Kconfig"
953
Ben Dooksa21765a2007-02-11 18:31:01 +0100954if ARCH_S3C2410
955source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100957source "arch/arm/mach-s3c2412/Kconfig"
Yauhen Kharuzhyf1290a42010-04-28 18:09:01 +0900958source "arch/arm/mach-s3c2416/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100959source "arch/arm/mach-s3c2440/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100960source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100961endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962
Ben Dooksa08ab632008-10-21 14:06:39 +0100963if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900964source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100965endif
966
Kukjin Kim49b7a492010-09-07 15:47:18 +0900967source "arch/arm/mach-s5p64x0/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900968
Kukjin Kim550db7f2010-01-29 10:19:26 +0900969source "arch/arm/mach-s5p6442/Kconfig"
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100970
Byungho Min5a7652f2009-06-23 21:39:42 +0900971source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900972
Kukjin Kim170f4e42010-02-24 16:40:44 +0900973source "arch/arm/mach-s5pv210/Kconfig"
974
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900975source "arch/arm/mach-s5pv310/Kconfig"
976
Russell King882d01f2010-03-02 23:40:15 +0000977source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978
Russell King882d01f2010-03-02 23:40:15 +0000979source "arch/arm/plat-stmp3xxx/Kconfig"
Brian Swetland9e73c842007-11-26 04:12:13 -0800980
Erik Gillingc5f80062010-01-21 16:53:02 -0800981source "arch/arm/mach-tegra/Kconfig"
982
Russell King95b8f202010-01-14 11:43:54 +0000983source "arch/arm/mach-u300/Kconfig"
Quinn Jensen52c543f2007-07-09 22:06:53 +0100984
Russell King95b8f202010-01-14 11:43:54 +0000985source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986
987source "arch/arm/mach-versatile/Kconfig"
988
Russell Kingceade892010-02-11 21:44:53 +0000989source "arch/arm/mach-vexpress/Kconfig"
990
wanzongshun7ec80dd2008-12-03 03:55:38 +0100991source "arch/arm/mach-w90x900/Kconfig"
992
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993# Definitions to make life easier
994config ARCH_ACORN
995 bool
996
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100997config PLAT_IOP
998 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700999 select GENERIC_CLOCKEVENTS
Russell King08f26b12010-12-15 21:52:10 +00001000 select HAVE_SCHED_CLOCK
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001001
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001002config PLAT_ORION
1003 bool
Russell Kingf06a1622010-12-15 21:55:06 +00001004 select HAVE_SCHED_CLOCK
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001005
Eric Miaobd5ce432009-01-20 12:06:01 +08001006config PLAT_PXA
1007 bool
1008
Russell Kingf4b8b312010-01-14 12:48:06 +00001009config PLAT_VERSATILE
1010 bool
1011
Russell Kinge3887712010-01-14 13:30:16 +00001012config ARM_TIMER_SP804
1013 bool
1014
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015source arch/arm/mm/Kconfig
1016
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001017config IWMMXT
1018 bool "Enable iWMMXt support"
Eric Miao40305a52009-02-26 09:34:35 +08001019 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
1020 default y if PXA27x || PXA3xx || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001021 help
1022 Enable support for iWMMXt context switching at run time if
1023 running on a CPU that supports it.
1024
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1026config XSCALE_PMU
1027 bool
1028 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1029 default y
1030
Jamie Iles0f4f0672010-02-02 20:23:15 +01001031config CPU_HAS_PMU
Will Deacon8954bb02010-06-21 15:32:54 +01001032 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
1033 (!ARCH_OMAP3 || OMAP3_EMU)
Jamie Iles0f4f0672010-02-02 20:23:15 +01001034 default y
1035 bool
1036
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001037if !MMU
1038source "arch/arm/Kconfig-nommu"
1039endif
1040
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001041config ARM_ERRATA_411920
1042 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Tony Lindgren81d11952010-09-21 17:16:40 +01001043 depends on CPU_V6
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001044 help
1045 Invalidation of the Instruction Cache operation can
1046 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1047 It does not affect the MPCore. This option enables the ARM Ltd.
1048 recommended workaround.
1049
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001050config ARM_ERRATA_430973
1051 bool "ARM errata: Stale prediction on replaced interworking branch"
1052 depends on CPU_V7
1053 help
1054 This option enables the workaround for the 430973 Cortex-A8
1055 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1056 interworking branch is replaced with another code sequence at the
1057 same virtual address, whether due to self-modifying code or virtual
1058 to physical address re-mapping, Cortex-A8 does not recover from the
1059 stale interworking branch prediction. This results in Cortex-A8
1060 executing the new code sequence in the incorrect ARM or Thumb state.
1061 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1062 and also flushes the branch target cache at every context switch.
1063 Note that setting specific bits in the ACTLR register may not be
1064 available in non-secure mode.
1065
Catalin Marinas855c5512009-04-30 17:06:15 +01001066config ARM_ERRATA_458693
1067 bool "ARM errata: Processor deadlock when a false hazard is created"
1068 depends on CPU_V7
1069 help
1070 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1071 erratum. For very specific sequences of memory operations, it is
1072 possible for a hazard condition intended for a cache line to instead
1073 be incorrectly associated with a different cache line. This false
1074 hazard might then cause a processor deadlock. The workaround enables
1075 the L1 caching of the NEON accesses and disables the PLD instruction
1076 in the ACTLR register. Note that setting specific bits in the ACTLR
1077 register may not be available in non-secure mode.
1078
Catalin Marinas0516e462009-04-30 17:06:20 +01001079config ARM_ERRATA_460075
1080 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1081 depends on CPU_V7
1082 help
1083 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1084 erratum. Any asynchronous access to the L2 cache may encounter a
1085 situation in which recent store transactions to the L2 cache are lost
1086 and overwritten with stale memory contents from external memory. The
1087 workaround disables the write-allocate mode for the L2 cache via the
1088 ACTLR register. Note that setting specific bits in the ACTLR register
1089 may not be available in non-secure mode.
1090
Will Deacon9f050272010-09-14 09:51:43 +01001091config ARM_ERRATA_742230
1092 bool "ARM errata: DMB operation may be faulty"
1093 depends on CPU_V7 && SMP
1094 help
1095 This option enables the workaround for the 742230 Cortex-A9
1096 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1097 between two write operations may not ensure the correct visibility
1098 ordering of the two writes. This workaround sets a specific bit in
1099 the diagnostic register of the Cortex-A9 which causes the DMB
1100 instruction to behave as a DSB, ensuring the correct behaviour of
1101 the two writes.
1102
Will Deacona672e992010-09-14 09:53:02 +01001103config ARM_ERRATA_742231
1104 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1105 depends on CPU_V7 && SMP
1106 help
1107 This option enables the workaround for the 742231 Cortex-A9
1108 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1109 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1110 accessing some data located in the same cache line, may get corrupted
1111 data due to bad handling of the address hazard when the line gets
1112 replaced from one of the CPUs at the same time as another CPU is
1113 accessing it. This workaround sets specific bits in the diagnostic
1114 register of the Cortex-A9 which reduces the linefill issuing
1115 capabilities of the processor.
1116
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001117config PL310_ERRATA_588369
1118 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1119 depends on CACHE_L2X0 && ARCH_OMAP4
1120 help
1121 The PL310 L2 cache controller implements three types of Clean &
1122 Invalidate maintenance operations: by Physical Address
1123 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1124 They are architecturally defined to behave as the execution of a
1125 clean operation followed immediately by an invalidate operation,
1126 both performing to the same memory location. This functionality
1127 is not correctly implemented in PL310 as clean lines are not
1128 invalidated as a result of these operations. Note that this errata
1129 uses Texas Instrument's secure monitor api.
Will Deaconcdf357f2010-08-05 11:20:51 +01001130
1131config ARM_ERRATA_720789
1132 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1133 depends on CPU_V7 && SMP
1134 help
1135 This option enables the workaround for the 720789 Cortex-A9 (prior to
1136 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1137 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1138 As a consequence of this erratum, some TLB entries which should be
1139 invalidated are not, resulting in an incoherency in the system page
1140 tables. The workaround changes the TLB flushing routines to invalidate
1141 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001142
1143config ARM_ERRATA_743622
1144 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1145 depends on CPU_V7
1146 help
1147 This option enables the workaround for the 743622 Cortex-A9
1148 (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1149 optimisation in the Cortex-A9 Store Buffer may lead to data
1150 corruption. This workaround sets a specific bit in the diagnostic
1151 register of the Cortex-A9 which disables the Store Buffer
1152 optimisation, preventing the defect from occurring. This has no
1153 visible impact on the overall performance or power consumption of the
1154 processor.
1155
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156endmenu
1157
1158source "arch/arm/common/Kconfig"
1159
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160menu "Bus support"
1161
1162config ARM_AMBA
1163 bool
1164
1165config ISA
1166 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001167 help
1168 Find out whether you have ISA slots on your motherboard. ISA is the
1169 name of a bus system, i.e. the way the CPU talks to the other stuff
1170 inside your box. Other bus systems are PCI, EISA, MicroChannel
1171 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1172 newer boards don't support it. If you have ISA, say Y, otherwise N.
1173
Russell King065909b2006-01-04 15:44:16 +00001174# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175config ISA_DMA
1176 bool
Russell King065909b2006-01-04 15:44:16 +00001177 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178
Russell King065909b2006-01-04 15:44:16 +00001179# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001180config ISA_DMA_API
1181 bool
Al Viro5cae8412005-05-04 05:39:22 +01001182
Linus Torvalds1da177e2005-04-16 15:20:36 -07001183config PCI
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001184 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX || SA1100_NANOENGINE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185 help
1186 Find out whether you have a PCI motherboard. PCI is the name of a
1187 bus system, i.e. the way the CPU talks to the other stuff inside
1188 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1189 VESA. If you have PCI, say Y, otherwise N.
1190
Anton Vorontsov52882172010-04-19 13:20:49 +01001191config PCI_DOMAINS
1192 bool
1193 depends on PCI
1194
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001195config PCI_NANOENGINE
1196 bool "BSE nanoEngine PCI support"
1197 depends on SA1100_NANOENGINE
1198 help
1199 Enable PCI on the BSE nanoEngine board.
1200
Matthew Wilcox36e23592007-07-10 10:54:40 -06001201config PCI_SYSCALL
1202 def_bool PCI
1203
Linus Torvalds1da177e2005-04-16 15:20:36 -07001204# Select the host bridge type
1205config PCI_HOST_VIA82C505
1206 bool
1207 depends on PCI && ARCH_SHARK
1208 default y
1209
Mike Rapoporta0113a92007-11-25 08:55:34 +01001210config PCI_HOST_ITE8152
1211 bool
1212 depends on PCI && MACH_ARMCORE
1213 default y
1214 select DMABOUNCE
1215
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216source "drivers/pci/Kconfig"
1217
1218source "drivers/pcmcia/Kconfig"
1219
1220endmenu
1221
1222menu "Kernel Features"
1223
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001224source "kernel/time/Kconfig"
1225
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226config SMP
1227 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell King971acb92010-09-04 08:16:30 +01001228 depends on EXPERIMENTAL
Russell Kingbc282482009-05-17 18:58:34 +01001229 depends on GENERIC_CLOCKEVENTS
Russell King971acb92010-09-04 08:16:30 +01001230 depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
Daniel Walker89c3ded2010-11-22 12:35:41 -08001231 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1232 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1233 ARCH_MSM_SCORPIONMP
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001234 select USE_GENERIC_SMP_HELPERS
Daniel Walker89c3ded2010-11-22 12:35:41 -08001235 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236 help
1237 This enables support for systems with more than one CPU. If you have
1238 a system with only one CPU, like most personal computers, say N. If
1239 you have a system with more than one CPU, say Y.
1240
1241 If you say N here, the kernel will run on single and multiprocessor
1242 machines, but will use only one CPU of a multiprocessor machine. If
1243 you say Y here, the kernel will run on many, but not all, single
1244 processor machines. On a single processor machine, the kernel will
1245 run faster if you say N here.
1246
Adrian Bunk03502fa2008-02-03 15:50:21 +02001247 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001249 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250
1251 If you don't know what to do here, say N.
1252
Russell Kingf00ec482010-09-04 10:47:48 +01001253config SMP_ON_UP
1254 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1255 depends on EXPERIMENTAL
1256 depends on SMP && !XIP && !THUMB2_KERNEL
1257 default y
1258 help
1259 SMP kernels contain instructions which fail on non-SMP processors.
1260 Enabling this option allows the kernel to modify itself to make
1261 these instructions safe. Disabling it allows about 1K of space
1262 savings.
1263
1264 If you don't know what to do here, say Y.
1265
Russell Kinga8cbcd92009-05-16 11:51:14 +01001266config HAVE_ARM_SCU
1267 bool
1268 depends on SMP
1269 help
1270 This option enables support for the ARM system coherency unit
1271
Russell Kingf32f4ce2009-05-16 12:14:21 +01001272config HAVE_ARM_TWD
1273 bool
1274 depends on SMP
1275 help
1276 This options enables support for the ARM timer and watchdog unit
1277
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001278choice
1279 prompt "Memory split"
1280 default VMSPLIT_3G
1281 help
1282 Select the desired split between kernel and user memory.
1283
1284 If you are not absolutely sure what you are doing, leave this
1285 option alone!
1286
1287 config VMSPLIT_3G
1288 bool "3G/1G user/kernel split"
1289 config VMSPLIT_2G
1290 bool "2G/2G user/kernel split"
1291 config VMSPLIT_1G
1292 bool "1G/3G user/kernel split"
1293endchoice
1294
1295config PAGE_OFFSET
1296 hex
1297 default 0x40000000 if VMSPLIT_1G
1298 default 0x80000000 if VMSPLIT_2G
1299 default 0xC0000000
1300
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301config NR_CPUS
1302 int "Maximum number of CPUs (2-32)"
1303 range 2 32
1304 depends on SMP
1305 default "4"
1306
Russell Kinga054a812005-11-02 22:24:33 +00001307config HOTPLUG_CPU
1308 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1309 depends on SMP && HOTPLUG && EXPERIMENTAL
Daniel Walker176bfc42010-09-07 13:33:05 -07001310 depends on !ARCH_MSM
Russell Kinga054a812005-11-02 22:24:33 +00001311 help
1312 Say Y here to experiment with turning CPUs off and on. CPUs
1313 can be controlled through /sys/devices/system/cpu.
1314
Russell King37ee16a2005-11-08 19:08:05 +00001315config LOCAL_TIMERS
1316 bool "Use local timer interrupts"
Russell King971acb92010-09-04 08:16:30 +01001317 depends on SMP
Russell King37ee16a2005-11-08 19:08:05 +00001318 default y
Daniel Walker89c3ded2010-11-22 12:35:41 -08001319 select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
Russell King37ee16a2005-11-08 19:08:05 +00001320 help
1321 Enable support for local timers on SMP platforms, rather then the
1322 legacy IPI broadcast method. Local timers allows the system
1323 accounting to be spread across the timer interval, preventing a
1324 "thundering herd" at every timer tick.
1325
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001326source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327
Russell Kingf8065812006-03-02 22:41:59 +00001328config HZ
1329 int
Kukjin Kim49b7a492010-09-07 15:47:18 +09001330 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
Russell King21924822010-08-09 14:07:19 +01001331 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
Russell Kingbfe65702006-03-04 11:01:53 +00001332 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001333 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001334 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001335 default 100
1336
Catalin Marinas16c79652009-07-24 12:33:02 +01001337config THUMB2_KERNEL
1338 bool "Compile the kernel in Thumb-2 mode"
Dave Martin6e6fc992010-12-13 21:53:53 +01001339 depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
Catalin Marinas16c79652009-07-24 12:33:02 +01001340 select AEABI
1341 select ARM_ASM_UNIFIED
1342 help
1343 By enabling this option, the kernel will be compiled in
1344 Thumb-2 mode. A compiler/assembler that understand the unified
1345 ARM-Thumb syntax is needed.
1346
1347 If unsure, say N.
1348
Catalin Marinas0becb082009-07-24 12:32:53 +01001349config ARM_ASM_UNIFIED
1350 bool
1351
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001352config AEABI
1353 bool "Use the ARM EABI to compile the kernel"
1354 help
1355 This option allows for the kernel to be compiled using the latest
1356 ARM ABI (aka EABI). This is only useful if you are using a user
1357 space environment that is also compiled with EABI.
1358
1359 Since there are major incompatibilities between the legacy ABI and
1360 EABI, especially with regard to structure member alignment, this
1361 option also changes the kernel syscall calling convention to
1362 disambiguate both ABIs and allow for backward compatibility support
1363 (selected with CONFIG_OABI_COMPAT).
1364
1365 To use this you need GCC version 4.0.0 or later.
1366
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001367config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001368 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +00001369 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001370 default y
1371 help
1372 This option preserves the old syscall interface along with the
1373 new (ARM EABI) one. It also provides a compatibility layer to
1374 intercept syscalls that have structure arguments which layout
1375 in memory differs between the legacy ABI and the new ARM EABI
1376 (only for non "thumb" binaries). This option adds a tiny
1377 overhead to all syscalls and produces a slightly larger kernel.
1378 If you know you'll be using only pure EABI user space then you
1379 can say N here. If this option is not selected and you attempt
1380 to execute a legacy ABI binary then the result will be
1381 UNPREDICTABLE (in fact it can be predicted that it won't work
1382 at all). If in doubt say Y.
1383
Mel Gormaneb335752009-05-13 17:34:48 +01001384config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001385 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001386
Russell King05944d72006-11-30 20:43:51 +00001387config ARCH_SPARSEMEM_ENABLE
1388 bool
1389
Russell King07a2f732008-10-01 21:39:58 +01001390config ARCH_SPARSEMEM_DEFAULT
1391 def_bool ARCH_SPARSEMEM_ENABLE
1392
Russell King05944d72006-11-30 20:43:51 +00001393config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001394 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001395
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001396config HIGHMEM
1397 bool "High Memory Support (EXPERIMENTAL)"
1398 depends on MMU && EXPERIMENTAL
1399 help
1400 The address space of ARM processors is only 4 Gigabytes large
1401 and it has to accommodate user address space, kernel address
1402 space as well as some memory mapped IO. That means that, if you
1403 have a large amount of physical memory and/or IO, not all of the
1404 memory can be "permanently mapped" by the kernel. The physical
1405 memory that is not permanently mapped is called "high memory".
1406
1407 Depending on the selected kernel/user memory split, minimum
1408 vmalloc space and actual amount of RAM, you may not need this
1409 option which should result in a slightly faster kernel.
1410
1411 If unsure, say n.
1412
Russell King65cec8e2009-08-17 20:02:06 +01001413config HIGHPTE
1414 bool "Allocate 2nd-level pagetables from highmem"
1415 depends on HIGHMEM
1416 depends on !OUTER_CACHE
1417
Jamie Iles1b8873a2010-02-02 20:25:44 +01001418config HW_PERF_EVENTS
1419 bool "Enable hardware performance counter support for perf events"
Will Deaconfe166142010-04-30 11:37:51 +01001420 depends on PERF_EVENTS && CPU_HAS_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001421 default y
1422 help
1423 Enable hardware performance counter support for perf events. If
1424 disabled, perf events will use software events only.
1425
eric miao354e6f72010-06-25 09:46:09 +01001426config SPARSE_IRQ
eric miaoc1ba6ba2010-07-22 09:55:53 +01001427 def_bool n
eric miao354e6f72010-06-25 09:46:09 +01001428 help
1429 This enables support for sparse irqs. This is useful in general
1430 as most CPUs have a fairly sparse array of IRQ vectors, which
1431 the irq_desc then maps directly on to. Systems with a high
1432 number of off-chip IRQs will want to treat this as
1433 experimental until they have been independently verified.
1434
Dave Hansen3f22ab22005-06-23 00:07:43 -07001435source "mm/Kconfig"
1436
Magnus Dammc1b2d972010-07-05 10:00:11 +01001437config FORCE_MAX_ZONEORDER
1438 int "Maximum zone order" if ARCH_SHMOBILE
1439 range 11 64 if ARCH_SHMOBILE
1440 default "9" if SA1111
1441 default "11"
1442 help
1443 The kernel memory allocator divides physically contiguous memory
1444 blocks into "zones", where each zone is a power of two number of
1445 pages. This option selects the largest power of two that the kernel
1446 keeps in the memory allocator. If you need to allocate very large
1447 blocks of physically contiguous memory, then you may need to
1448 increase this value.
1449
1450 This config option is actually maximum order plus one. For example,
1451 a value of 11 means that the largest free memory block is 2^10 pages.
1452
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453config LEDS
1454 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001455 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001456 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1458 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001459 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001460 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042f2009-05-30 13:56:13 +01001461 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 help
1463 If you say Y here, the LEDs on your machine will be used
1464 to provide useful information about your current system status.
1465
1466 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1467 be able to select which LEDs are active using the options below. If
1468 you are compiling a kernel for the EBSA-110 or the LART however, the
1469 red LED will simply flash regularly to indicate that the system is
1470 still functional. It is safe to say Y here if you have a CATS
1471 system, but the driver will do nothing.
1472
1473config LEDS_TIMER
1474 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001475 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1476 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001478 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479 default y if ARCH_EBSA110
1480 help
1481 If you say Y here, one of the system LEDs (the green one on the
1482 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1483 will flash regularly to indicate that the system is still
1484 operational. This is mainly useful to kernel hackers who are
1485 debugging unstable kernels.
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 LEDS_CPU
1492 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001493 !ARCH_OMAP) \
1494 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1495 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496 depends on LEDS
1497 help
1498 If you say Y here, the red LED will be used to give a good real
1499 time indication of CPU usage, by lighting whenever the idle task
1500 is not currently executing.
1501
1502 The LART uses the same LED for both Timer LED and CPU usage LED
1503 functions. You may choose to use both, but the Timer LED function
1504 will overrule the CPU usage LED.
1505
1506config ALIGNMENT_TRAP
1507 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001508 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001510 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001512 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1514 address divisible by 4. On 32-bit ARM processors, these non-aligned
1515 fetch/store instructions will be emulated in software if you say
1516 here, which has a severe performance impact. This is necessary for
1517 correct operation of some network protocols. With an IP-only
1518 configuration it is safe to say N, otherwise say Y.
1519
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001520config UACCESS_WITH_MEMCPY
1521 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1522 depends on MMU && EXPERIMENTAL
1523 default y if CPU_FEROCEON
1524 help
1525 Implement faster copy_to_user and clear_user methods for CPU
1526 cores where a 8-word STM instruction give significantly higher
1527 memory write throughput than a sequence of individual 32bit stores.
1528
1529 A possible side effect is a slight increase in scheduling latency
1530 between threads sharing the same address space if they invoke
1531 such copy operations with large buffers.
1532
1533 However, if the CPU data cache is using a write-allocate mode,
1534 this option is unlikely to provide any performance gain.
1535
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001536config SECCOMP
1537 bool
1538 prompt "Enable seccomp to safely compute untrusted bytecode"
1539 ---help---
1540 This kernel feature is useful for number crunching applications
1541 that may need to compute untrusted bytecode during their
1542 execution. By using pipes or other transports made available to
1543 the process as file descriptors supporting the read/write
1544 syscalls, it's possible to isolate those applications in
1545 their own address space using seccomp. Once seccomp is
1546 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1547 and the task is only allowed to execute a few safe syscalls
1548 defined by each seccomp mode.
1549
Nicolas Pitrec743f382010-05-24 23:55:42 -04001550config CC_STACKPROTECTOR
1551 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1552 help
1553 This option turns on the -fstack-protector GCC feature. This
1554 feature puts, at the beginning of functions, a canary value on
1555 the stack just before the return address, and validates
1556 the value just before actually returning. Stack based buffer
1557 overflows (that need to overwrite this return address) now also
1558 overwrite the canary, which gets detected and the attack is then
1559 neutralized via a kernel panic.
1560 This feature requires gcc version 4.2 or above.
1561
Uwe Kleine-König73a65b32010-01-19 10:13:14 +01001562config DEPRECATED_PARAM_STRUCT
1563 bool "Provide old way to pass kernel parameters"
1564 help
1565 This was deprecated in 2001 and announced to live on for 5 years.
1566 Some old boot loaders still use this way.
1567
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568endmenu
1569
1570menu "Boot options"
1571
1572# Compressed boot loader in ROM. Yes, we really want to ask about
1573# TEXT and BSS so we preserve their values in the config files.
1574config ZBOOT_ROM_TEXT
1575 hex "Compressed ROM boot loader base address"
1576 default "0"
1577 help
1578 The physical address at which the ROM-able zImage is to be
1579 placed in the target. Platforms which normally make use of
1580 ROM-able zImage formats normally set this to a suitable
1581 value in their defconfig file.
1582
1583 If ZBOOT_ROM is not enabled, this has no effect.
1584
1585config ZBOOT_ROM_BSS
1586 hex "Compressed ROM boot loader BSS address"
1587 default "0"
1588 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001589 The base address of an area of read/write memory in the target
1590 for the ROM-able zImage which must be available while the
1591 decompressor is running. It must be large enough to hold the
1592 entire decompressed kernel plus an additional 128 KiB.
1593 Platforms which normally make use of ROM-able zImage formats
1594 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595
1596 If ZBOOT_ROM is not enabled, this has no effect.
1597
1598config ZBOOT_ROM
1599 bool "Compressed boot loader in ROM/flash"
1600 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1601 help
1602 Say Y here if you intend to execute your compressed kernel image
1603 (zImage) directly from ROM or flash. If unsure, say N.
1604
1605config CMDLINE
1606 string "Default kernel command string"
1607 default ""
1608 help
1609 On some architectures (EBSA110 and CATS), there is currently no way
1610 for the boot loader to pass arguments to the kernel. For these
1611 architectures, you should supply some command-line options at build
1612 time by entering them here. As a minimum, you should specify the
1613 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1614
Alexander Holler92d20402010-02-16 19:04:53 +01001615config CMDLINE_FORCE
1616 bool "Always use the default kernel command string"
1617 depends on CMDLINE != ""
1618 help
1619 Always use the default kernel command string, even if the boot
1620 loader passes other arguments to the kernel.
1621 This is useful if you cannot or don't want to change the
1622 command-line options your boot loader passes to the kernel.
1623
1624 If unsure, say N.
1625
Linus Torvalds1da177e2005-04-16 15:20:36 -07001626config XIP_KERNEL
1627 bool "Kernel Execute-In-Place from ROM"
1628 depends on !ZBOOT_ROM
1629 help
1630 Execute-In-Place allows the kernel to run from non-volatile storage
1631 directly addressable by the CPU, such as NOR flash. This saves RAM
1632 space since the text section of the kernel is not loaded from flash
1633 to RAM. Read-write sections, such as the data section and stack,
1634 are still copied to RAM. The XIP kernel is not compressed since
1635 it has to run directly from flash, so it will take more space to
1636 store it. The flash address used to link the kernel object files,
1637 and for storing it, is configuration dependent. Therefore, if you
1638 say Y here, you must know the proper physical address where to
1639 store the kernel image depending on your own flash memory usage.
1640
1641 Also note that the make target becomes "make xipImage" rather than
1642 "make zImage" or "make Image". The final kernel binary to put in
1643 ROM memory will be arch/arm/boot/xipImage.
1644
1645 If unsure, say N.
1646
1647config XIP_PHYS_ADDR
1648 hex "XIP Kernel Physical Location"
1649 depends on XIP_KERNEL
1650 default "0x00080000"
1651 help
1652 This is the physical address in your flash memory the kernel will
1653 be linked for and stored to. This address is dependent on your
1654 own flash usage.
1655
Richard Purdiec587e4a2007-02-06 21:29:00 +01001656config KEXEC
1657 bool "Kexec system call (EXPERIMENTAL)"
1658 depends on EXPERIMENTAL
1659 help
1660 kexec is a system call that implements the ability to shutdown your
1661 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001662 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001663 you can start any kernel with it, not just Linux.
1664
1665 It is an ongoing process to be certain the hardware in a machine
1666 is properly shutdown, so do not be surprised if this code does not
1667 initially work for you. It may help to enable device hotplugging
1668 support.
1669
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001670config ATAGS_PROC
1671 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01001672 depends on KEXEC
1673 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001674 help
1675 Should the atags used to boot the kernel be exported in an "atags"
1676 file in procfs. Useful with kexec.
1677
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01001678config CRASH_DUMP
1679 bool "Build kdump crash kernel (EXPERIMENTAL)"
1680 depends on EXPERIMENTAL
1681 help
1682 Generate crash dump after being started by kexec. This should
1683 be normally only set in special crash dump kernels which are
1684 loaded in the main kernel with kexec-tools into a specially
1685 reserved region and then later executed after a crash by
1686 kdump/kexec. The crash dump kernel must be compiled to a
1687 memory address not used by the main kernel
1688
1689 For more details see Documentation/kdump/kdump.txt
1690
Eric Miaoe69edc792010-07-05 15:56:50 +02001691config AUTO_ZRELADDR
1692 bool "Auto calculation of the decompressed kernel image address"
1693 depends on !ZBOOT_ROM && !ARCH_U300
1694 help
1695 ZRELADDR is the physical address where the decompressed kernel
1696 image will be placed. If AUTO_ZRELADDR is selected, the address
1697 will be determined at run-time by masking the current IP with
1698 0xf8000000. This assumes the zImage being placed in the first 128MB
1699 from start of memory.
1700
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701endmenu
1702
Russell Kingac9d7ef2008-08-18 17:26:00 +01001703menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704
Ben Dooks89c52ed2009-07-30 23:23:24 +01001705if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706
1707source "drivers/cpufreq/Kconfig"
1708
Yong Shen64f102b2010-10-21 21:18:59 +08001709config CPU_FREQ_IMX
1710 tristate "CPUfreq driver for i.MX CPUs"
1711 depends on ARCH_MXC && CPU_FREQ
1712 help
1713 This enables the CPUfreq driver for i.MX CPUs.
1714
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715config CPU_FREQ_SA1100
1716 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717
1718config CPU_FREQ_SA1110
1719 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720
1721config CPU_FREQ_INTEGRATOR
1722 tristate "CPUfreq driver for ARM Integrator CPUs"
1723 depends on ARCH_INTEGRATOR && CPU_FREQ
1724 default y
1725 help
1726 This enables the CPUfreq driver for ARM Integrator CPUs.
1727
1728 For details, take a look at <file:Documentation/cpu-freq>.
1729
1730 If in doubt, say Y.
1731
Russell King9e2697f2007-12-14 13:30:14 +00001732config CPU_FREQ_PXA
1733 bool
1734 depends on CPU_FREQ && ARCH_PXA && PXA25x
1735 default y
1736 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1737
Mark Brownb3748dd2009-06-15 11:23:20 +01001738config CPU_FREQ_S3C64XX
1739 bool "CPUfreq support for Samsung S3C64XX CPUs"
1740 depends on CPU_FREQ && CPU_S3C6410
1741
Ben Dooks9d56c022009-07-30 23:23:25 +01001742config CPU_FREQ_S3C
1743 bool
1744 help
1745 Internal configuration node for common cpufreq on Samsung SoC
1746
1747config CPU_FREQ_S3C24XX
1748 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1749 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1750 select CPU_FREQ_S3C
1751 help
1752 This enables the CPUfreq driver for the Samsung S3C24XX family
1753 of CPUs.
1754
1755 For details, take a look at <file:Documentation/cpu-freq>.
1756
1757 If in doubt, say N.
1758
1759config CPU_FREQ_S3C24XX_PLL
1760 bool "Support CPUfreq changing of PLL frequency"
1761 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1762 help
1763 Compile in support for changing the PLL frequency from the
1764 S3C24XX series CPUfreq driver. The PLL takes time to settle
1765 after a frequency change, so by default it is not enabled.
1766
1767 This also means that the PLL tables for the selected CPU(s) will
1768 be built which may increase the size of the kernel image.
1769
1770config CPU_FREQ_S3C24XX_DEBUG
1771 bool "Debug CPUfreq Samsung driver core"
1772 depends on CPU_FREQ_S3C24XX
1773 help
1774 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1775
1776config CPU_FREQ_S3C24XX_IODEBUG
1777 bool "Debug CPUfreq Samsung driver IO timing"
1778 depends on CPU_FREQ_S3C24XX
1779 help
1780 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1781
Ben Dookse6d197a2009-07-30 23:23:42 +01001782config CPU_FREQ_S3C24XX_DEBUGFS
1783 bool "Export debugfs for CPUFreq"
1784 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1785 help
1786 Export status information via debugfs.
1787
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788endif
1789
Russell Kingac9d7ef2008-08-18 17:26:00 +01001790source "drivers/cpuidle/Kconfig"
1791
1792endmenu
1793
Linus Torvalds1da177e2005-04-16 15:20:36 -07001794menu "Floating point emulation"
1795
1796comment "At least one emulation must be selected"
1797
1798config FPE_NWFPE
1799 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01001800 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801 ---help---
1802 Say Y to include the NWFPE floating point emulator in the kernel.
1803 This is necessary to run most binaries. Linux does not currently
1804 support floating point hardware so you need to say Y here even if
1805 your machine has an FPA or floating point co-processor podule.
1806
1807 You may say N here if you are going to load the Acorn FPEmulator
1808 early in the bootup.
1809
1810config FPE_NWFPE_XP
1811 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001812 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813 help
1814 Say Y to include 80-bit support in the kernel floating-point
1815 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1816 Note that gcc does not generate 80-bit operations by default,
1817 so in most cases this option only enlarges the size of the
1818 floating point emulator without any good reason.
1819
1820 You almost surely want to say N here.
1821
1822config FPE_FASTFPE
1823 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001824 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825 ---help---
1826 Say Y here to include the FAST floating point emulator in the kernel.
1827 This is an experimental much faster emulator which now also has full
1828 precision for the mantissa. It does not support any exceptions.
1829 It is very simple, and approximately 3-6 times faster than NWFPE.
1830
1831 It should be sufficient for most programs. It may be not suitable
1832 for scientific calculations, but you have to check this for yourself.
1833 If you do not feel you need a faster FP emulation you should better
1834 choose NWFPE.
1835
1836config VFP
1837 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001838 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839 help
1840 Say Y to include VFP support code in the kernel. This is needed
1841 if your hardware includes a VFP unit.
1842
1843 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1844 release notes and additional status information.
1845
1846 Say N if your target does not have VFP hardware.
1847
Catalin Marinas25ebee02007-09-25 15:22:24 +01001848config VFPv3
1849 bool
1850 depends on VFP
1851 default y if CPU_V7
1852
Catalin Marinasb5872db2008-01-10 19:16:17 +01001853config NEON
1854 bool "Advanced SIMD (NEON) Extension support"
1855 depends on VFPv3 && CPU_V7
1856 help
1857 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1858 Extension.
1859
Linus Torvalds1da177e2005-04-16 15:20:36 -07001860endmenu
1861
1862menu "Userspace binary formats"
1863
1864source "fs/Kconfig.binfmt"
1865
1866config ARTHUR
1867 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001868 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001869 help
1870 Say Y here to include the kernel code necessary if you want to run
1871 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1872 experimental; if this sounds frightening, say N and sleep in peace.
1873 You can also say M here to compile this support as a module (which
1874 will be called arthur).
1875
1876endmenu
1877
1878menu "Power management options"
1879
Russell Kingeceab4a2005-11-15 11:31:41 +00001880source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881
Johannes Bergf4cb5702007-12-08 02:14:00 +01001882config ARCH_SUSPEND_POSSIBLE
1883 def_bool y
1884
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885endmenu
1886
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001887source "net/Kconfig"
1888
Uwe Kleine-Königac251502009-08-13 21:09:21 +02001889source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890
1891source "fs/Kconfig"
1892
Linus Torvalds1da177e2005-04-16 15:20:36 -07001893source "arch/arm/Kconfig.debug"
1894
1895source "security/Kconfig"
1896
1897source "crypto/Kconfig"
1898
1899source "lib/Kconfig"