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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
Alessandro Zummo12b824f2006-03-27 01:16:35 -080013 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +000014 select SYS_SUPPORTS_APM_EMULATION
Will Deacon24b44a62010-01-20 19:05:07 +010015 select GENERIC_ATOMIC64 if (!CPU_32v6K)
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -050016 select HAVE_OPROFILE
Jason Wessel5cbad0e2008-02-20 13:33:40 -060017 select HAVE_ARCH_KGDB
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050018 select HAVE_KPROBES if (!XIP_KERNEL)
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080019 select HAVE_KRETPROBES if (HAVE_KPROBES)
Steven Rostedt606576c2008-10-06 19:06:12 -040020 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
Dmitry Baryshkov1fe53262008-07-18 13:30:14 +040021 select HAVE_GENERIC_DMA_COHERENT
Albin Tonnerree7db7b42010-01-08 14:42:43 -080022 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_LZO
Jamie Iles7ada1892010-02-02 20:24:58 +010024 select HAVE_PERF_EVENTS
25 select PERF_USE_VMALLOC
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 help
27 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000028 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070029 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000030 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 Europe. There is an ARM Linux project with a web page at
32 <http://www.arm.linux.org.uk/>.
33
Russell King1a189b92008-04-13 21:41:55 +010034config HAVE_PWM
35 bool
36
Ralf Baechle75e71532007-02-09 17:08:58 +000037config SYS_SUPPORTS_APM_EMULATION
38 bool
39
David Brownell0a938b92007-03-05 00:30:18 -080040config GENERIC_GPIO
41 bool
David Brownell0a938b92007-03-05 00:30:18 -080042
Kevin Hilman746140c2006-09-22 00:16:30 +010043config GENERIC_TIME
44 bool
Kevin Hilman746140c2006-09-22 00:16:30 +010045
Kevin Hilman0567a0c2007-03-13 20:29:24 +010046config GENERIC_CLOCKEVENTS
47 bool
Kevin Hilman0567a0c2007-03-13 20:29:24 +010048
Catalin Marinasa8655e82008-02-04 17:30:57 +010049config GENERIC_CLOCKEVENTS_BROADCAST
50 bool
51 depends on GENERIC_CLOCKEVENTS
52 default y if SMP && !LOCAL_TIMERS
53
Linus Walleijbc581772009-09-15 17:30:37 +010054config HAVE_TCM
55 bool
56 select GENERIC_ALLOCATOR
57
Russell Kinge119bff2010-01-10 17:23:29 +000058config HAVE_PROC_CPU
59 bool
60
Al Viro5ea81762007-02-11 15:41:31 +000061config NO_IOPORT
62 bool
Al Viro5ea81762007-02-11 15:41:31 +000063
Linus Torvalds1da177e2005-04-16 15:20:36 -070064config EISA
65 bool
66 ---help---
67 The Extended Industry Standard Architecture (EISA) bus was
68 developed as an open alternative to the IBM MicroChannel bus.
69
70 The EISA bus provided some of the features of the IBM MicroChannel
71 bus while maintaining backward compatibility with cards made for
72 the older ISA bus. The EISA bus saw limited use between 1988 and
73 1995 when it was made obsolete by the PCI bus.
74
75 Say Y here if you are building a kernel for an EISA-based machine.
76
77 Otherwise, say N.
78
79config SBUS
80 bool
81
82config MCA
83 bool
84 help
85 MicroChannel Architecture is found in some IBM PS/2 machines and
86 laptops. It is a bus system similar to PCI or ISA. See
87 <file:Documentation/mca.txt> (and especially the web page given
88 there) before attempting to build an MCA bus kernel.
89
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010090config GENERIC_HARDIRQS
91 bool
92 default y
93
Russell Kingf16fb1e2007-04-28 09:59:37 +010094config STACKTRACE_SUPPORT
95 bool
96 default y
97
Nicolas Pitref76e9152008-04-24 01:31:46 -040098config HAVE_LATENCYTOP_SUPPORT
99 bool
100 depends on !SMP
101 default y
102
Russell Kingf16fb1e2007-04-28 09:59:37 +0100103config LOCKDEP_SUPPORT
104 bool
105 default y
106
Russell King7ad1bcb2006-08-27 12:07:02 +0100107config TRACE_IRQFLAGS_SUPPORT
108 bool
109 default y
110
Thomas Gleixner4a2581a2006-07-01 22:30:09 +0100111config HARDIRQS_SW_RESEND
112 bool
113 default y
114
115config GENERIC_IRQ_PROBE
116 bool
117 default y
118
Nick Piggin95c354f2008-01-30 13:31:20 +0100119config GENERIC_LOCKBREAK
120 bool
121 default y
122 depends on SMP && PREEMPT
123
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124config RWSEM_GENERIC_SPINLOCK
125 bool
126 default y
127
128config RWSEM_XCHGADD_ALGORITHM
129 bool
130
David Howellsf0d1b0b2006-12-08 02:37:49 -0800131config ARCH_HAS_ILOG2_U32
132 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800133
134config ARCH_HAS_ILOG2_U64
135 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800136
Ben Dooks89c52ed2009-07-30 23:23:24 +0100137config ARCH_HAS_CPUFREQ
138 bool
139 help
140 Internal node to signify that the ARCH has CPUFREQ support
141 and that the relevant menu configurations are displayed for
142 it.
143
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800144config GENERIC_HWEIGHT
145 bool
146 default y
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148config GENERIC_CALIBRATE_DELAY
149 bool
150 default y
151
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100152config ARCH_MAY_HAVE_PC_FDC
153 bool
154
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800155config ZONE_DMA
156 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800157
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800158config NEED_DMA_MAP_STATE
159 def_bool y
160
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161config GENERIC_ISA_DMA
162 bool
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164config FIQ
165 bool
166
Al Viro034d2f52005-12-19 16:27:59 -0500167config ARCH_MTD_XIP
168 bool
169
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100170config GENERIC_HARDIRQS_NO__DO_IRQ
Paulius Zaleckas60a752e2008-06-25 13:33:14 +0100171 def_bool y
172
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100173config ARM_L1_CACHE_SHIFT_6
174 bool
175 help
176 Setting ARM L1 cache line size to 64 Bytes.
177
Mathieu Desnoyersc0ffa3a2008-02-02 15:10:32 -0500178if OPROFILE
179
180config OPROFILE_ARMV6
181 def_bool y
182 depends on CPU_V6 && !SMP
183 select OPROFILE_ARM11_CORE
184
185config OPROFILE_MPCORE
186 def_bool y
187 depends on CPU_V6 && SMP
188 select OPROFILE_ARM11_CORE
189
190config OPROFILE_ARM11_CORE
191 bool
192
Jean PIHETd7ac4e22008-08-12 19:07:39 +0100193config OPROFILE_ARMV7
194 def_bool y
195 depends on CPU_V7 && !SMP
196 bool
197
Mathieu Desnoyersc0ffa3a2008-02-02 15:10:32 -0500198endif
199
Hyok S. Choic760fc12006-03-27 15:18:50 +0100200config VECTORS_BASE
201 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900202 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100203 default DRAM_BASE if REMAP_VECTORS_TO_RAM
204 default 0x00000000
205 help
206 The base address of exception vectors.
207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208source "init/Kconfig"
209
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700210source "kernel/Kconfig.freezer"
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212menu "System Type"
213
Hyok S. Choi3c427972009-07-24 12:35:00 +0100214config MMU
215 bool "MMU-based Paged Memory Management Support"
216 default y
217 help
218 Select if you want MMU-based virtualised addressing space
219 support by paged memory management. If unsure, say 'Y'.
220
Russell Kingccf50e22010-03-15 19:03:06 +0000221#
222# The "ARM system type" choice list is ordered alphabetically by option
223# text. Please add new entries in the option alphabetic order.
224#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225choice
226 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000227 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100229config ARCH_AAEC2000
230 bool "Agilent AAEC-2000 based"
Russell Kingc7508152008-10-26 10:55:14 +0000231 select CPU_ARM920T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100232 select ARM_AMBA
David Brownell9483a572008-07-23 21:26:48 -0700233 select HAVE_CLK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100234 help
235 This enables support for systems based on the Agilent AAEC-2000
236
237config ARCH_INTEGRATOR
238 bool "ARM Ltd. Integrator family"
239 select ARM_AMBA
Ben Dooks89c52ed2009-07-30 23:23:24 +0100240 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700241 select HAVE_CLK
Russell Kingd72fbdf2008-11-08 20:08:08 +0000242 select COMMON_CLKDEV
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100243 select ICST525
244 help
245 Support for ARM's Integrator platform.
246
247config ARCH_REALVIEW
248 bool "ARM Ltd. RealView family"
249 select ARM_AMBA
David Brownell9483a572008-07-23 21:26:48 -0700250 select HAVE_CLK
Russell Kingcf30fb42008-11-08 20:05:55 +0000251 select COMMON_CLKDEV
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100252 select ICST307
Catalin Marinas85802af2008-02-04 17:24:54 +0100253 select GENERIC_TIME
Catalin Marinasae30cea2008-02-04 17:26:55 +0100254 select GENERIC_CLOCKEVENTS
Russell Kingeb7fffa2009-07-05 22:41:31 +0100255 select ARCH_WANT_OPTIONAL_GPIOLIB
Colin Tuckleyb56ba8a2010-02-24 15:23:10 +0100256 select GPIO_PL061 if GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100257 help
258 This enables support for ARM Ltd RealView boards.
259
260config ARCH_VERSATILE
261 bool "ARM Ltd. Versatile family"
262 select ARM_AMBA
263 select ARM_VIC
David Brownell9483a572008-07-23 21:26:48 -0700264 select HAVE_CLK
Russell King71a06da2008-11-08 20:13:53 +0000265 select COMMON_CLKDEV
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100266 select ICST307
Kevin Hilmanb49c87c2007-03-08 20:25:13 +0100267 select GENERIC_TIME
Kevin Hilman89df1272007-03-08 20:30:38 +0100268 select GENERIC_CLOCKEVENTS
Russell Kingbbeddc42009-07-05 22:43:01 +0100269 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100270 help
271 This enables support for ARM Ltd Versatile board.
272
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100273config ARCH_AT91
274 bool "Atmel AT91"
David Brownell0a938b92007-03-05 00:30:18 -0800275 select GENERIC_GPIO
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100276 select ARCH_REQUIRE_GPIOLIB
David Brownell93686ae2008-07-28 15:46:22 -0700277 select HAVE_CLK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100278 help
Andrew Victor2b3b3512008-01-24 15:10:39 +0100279 This enables support for systems based on the Atmel AT91RM9200,
280 AT91SAM9 and AT91CAP9 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100281
Russell Kingccf50e22010-03-15 19:03:06 +0000282config ARCH_BCMRING
283 bool "Broadcom BCMRING"
284 depends on MMU
285 select CPU_V6
286 select ARM_AMBA
287 select COMMON_CLKDEV
288 select GENERIC_TIME
289 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
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000297 help
298 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
Russell King788c9702009-04-26 14:21:59 +0100300config ARCH_GEMINI
301 bool "Cortina Systems Gemini"
302 select CPU_FA526
303 select GENERIC_GPIO
304 select ARCH_REQUIRE_GPIOLIB
305 help
306 Support for the Cortina Systems Gemini family SoCs
307
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308config ARCH_EBSA110
309 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000310 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100311 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000312 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 help
314 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000315 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 Ethernet interface, two PCMCIA sockets, two serial ports and a
317 parallel port.
318
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000319config ARCH_EP93XX
320 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000321 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000322 select ARM_AMBA
323 select ARM_VIC
Herbert Valerio Riedel4e9f9fd2007-11-26 18:41:02 +0100324 select GENERIC_GPIO
David Brownell9483a572008-07-23 21:26:48 -0700325 select HAVE_CLK
Russell Kingae696fd2008-11-30 17:11:49 +0000326 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700327 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100328 select ARCH_HAS_HOLES_MEMORYMODEL
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000329 help
330 This enables support for the Cirrus EP93xx series of CPUs.
331
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332config ARCH_FOOTBRIDGE
333 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000334 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000336 help
337 Support for systems based on the DC21285 companion chip
338 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
Russell King788c9702009-04-26 14:21:59 +0100340config ARCH_MXC
341 bool "Freescale MXC/iMX-based"
342 select GENERIC_TIME
343 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100344 select ARCH_REQUIRE_GPIOLIB
Russell Kinga2ab67f2009-05-23 20:57:31 +0100345 select HAVE_CLK
Uwe Kleine-König03e09cd2010-02-15 17:10:42 +0100346 select COMMON_CLKDEV
Russell King788c9702009-04-26 14:21:59 +0100347 help
348 Support for Freescale MXC/iMX-based family of processors
349
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100350config ARCH_STMP3XXX
351 bool "Freescale STMP3xxx"
352 select CPU_ARM926T
353 select HAVE_CLK
354 select COMMON_CLKDEV
355 select ARCH_REQUIRE_GPIOLIB
356 select GENERIC_TIME
357 select GENERIC_CLOCKEVENTS
358 select GENERIC_GPIO
359 select USB_ARCH_HAS_EHCI
360 help
361 Support for systems based on the Freescale 3xxx CPUs.
362
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100363config ARCH_NETX
364 bool "Hilscher NetX based"
Russell Kingc7508152008-10-26 10:55:14 +0000365 select CPU_ARM926T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100366 select ARM_VIC
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100367 select GENERIC_CLOCKEVENTS
Uwe Kleine-König21edecd2008-12-09 21:57:23 +0100368 select GENERIC_TIME
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000369 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100370 This enables support for systems based on the Hilscher NetX Soc
371
372config ARCH_H720X
373 bool "Hynix HMS720x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000374 select CPU_ARM720T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100375 select ISA_DMA_API
376 help
377 This enables support for systems based on the Hynix HMS720x
378
Russell King3b938be2007-05-12 11:25:44 +0100379config ARCH_IOP13XX
380 bool "IOP13xx-based"
381 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000382 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100383 select PLAT_IOP
384 select PCI
385 select ARCH_SUPPORTS_MSI
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +0100386 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100387 help
388 Support for Intel's IOP13XX (XScale) family of processors.
389
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100390config ARCH_IOP32X
391 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100392 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000393 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100394 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100395 select PCI
Arnaud Patard63f385c2008-07-08 23:07:48 +0100396 select GENERIC_GPIO
Russell Kingbb2b1802008-07-26 15:36:03 +0100397 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000398 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100399 Support for Intel's 80219 and IOP32X (XScale) family of
400 processors.
401
402config ARCH_IOP33X
403 bool "IOP33x-based"
404 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000405 select CPU_XSCALE
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100406 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100407 select PCI
Arnaud Patard63f385c2008-07-08 23:07:48 +0100408 select GENERIC_GPIO
Russell Kingbb2b1802008-07-26 15:36:03 +0100409 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100410 help
411 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412
Russell King3b938be2007-05-12 11:25:44 +0100413config ARCH_IXP23XX
414 bool "IXP23XX-based"
Dan Williams588ef762007-02-13 17:12:04 +0100415 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000416 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100417 select PCI
Dan Williams285f5fa2006-12-07 02:59:39 +0100418 help
Russell King3b938be2007-05-12 11:25:44 +0100419 Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420
421config ARCH_IXP2000
422 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100423 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000424 select CPU_XSCALE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100425 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000426 help
427 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Russell King3b938be2007-05-12 11:25:44 +0100429config ARCH_IXP4XX
430 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100431 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000432 select CPU_XSCALE
Milan Svoboda8858e9a2007-05-14 07:50:42 +0100433 select GENERIC_GPIO
Russell King3b938be2007-05-12 11:25:44 +0100434 select GENERIC_TIME
435 select GENERIC_CLOCKEVENTS
Russell King485bdde2008-10-17 14:00:43 +0100436 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100437 help
Russell King3b938be2007-05-12 11:25:44 +0100438 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100439
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440config ARCH_L7200
441 bool "LinkUp-L7200"
Russell Kingc7508152008-10-26 10:55:14 +0000442 select CPU_ARM720T
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 select FIQ
444 help
445 Say Y here if you intend to run this kernel on a LinkUp Systems
446 L7200 Software Development Board which uses an ARM720T processor.
447 Information on this board can be obtained at:
448
449 <http://www.linkupsys.com/>
450
451 If you have any questions or comments about the Linux kernel port
452 to this board, send e-mail to <sjhill@cotw.com>.
453
Saeed Bisharaedabd382009-08-06 15:12:43 +0300454config ARCH_DOVE
455 bool "Marvell Dove"
456 select PCI
457 select GENERIC_GPIO
458 select ARCH_REQUIRE_GPIOLIB
459 select GENERIC_TIME
460 select GENERIC_CLOCKEVENTS
461 select PLAT_ORION
462 help
463 Support for the Marvell Dove SoC 88AP510
464
Saeed Bishara651c74c2008-06-22 22:45:06 +0200465config ARCH_KIRKWOOD
466 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000467 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200468 select PCI
Lennert Buytenhek4c213432008-10-20 01:51:04 +0200469 select GENERIC_GPIO
Erik Benadaa8865652009-05-28 17:08:55 -0700470 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200471 select GENERIC_TIME
472 select GENERIC_CLOCKEVENTS
473 select PLAT_ORION
474 help
475 Support for the following Marvell Kirkwood series SoCs:
476 88F6180, 88F6192 and 88F6281.
477
Russell King788c9702009-04-26 14:21:59 +0100478config ARCH_LOKI
479 bool "Marvell Loki (88RC8480)"
480 select CPU_FEROCEON
481 select GENERIC_TIME
482 select GENERIC_CLOCKEVENTS
483 select PLAT_ORION
484 help
485 Support for the Marvell Loki (88RC8480) SoC.
486
487config ARCH_MV78XX0
488 bool "Marvell MV78xx0"
489 select CPU_FEROCEON
490 select PCI
491 select GENERIC_GPIO
Erik Benadaa8865652009-05-28 17:08:55 -0700492 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100493 select GENERIC_TIME
494 select GENERIC_CLOCKEVENTS
495 select PLAT_ORION
496 help
497 Support for the following Marvell MV78xx0 series SoCs:
498 MV781x0, MV782x0.
499
500config ARCH_ORION5X
501 bool "Marvell Orion"
502 depends on MMU
503 select CPU_FEROCEON
504 select PCI
505 select GENERIC_GPIO
Erik Benadaa8865652009-05-28 17:08:55 -0700506 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100507 select GENERIC_TIME
508 select GENERIC_CLOCKEVENTS
509 select PLAT_ORION
510 help
511 Support for the following Marvell Orion 5x series SoCs:
512 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
513 Orion-2 (5281), Orion-1-90 (6183).
514
515config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500516 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100517 depends on MMU
518 select GENERIC_GPIO
519 select ARCH_REQUIRE_GPIOLIB
520 select HAVE_CLK
521 select COMMON_CLKDEV
522 select GENERIC_TIME
523 select GENERIC_CLOCKEVENTS
524 select TICK_ONESHOT
525 select PLAT_PXA
526 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500527 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100528
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100529config ARCH_KS8695
530 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000531 select CPU_ARM922T
Andrew Victor8a87a992007-05-14 14:30:15 +0100532 select GENERIC_GPIO
Daniel Silverstone72880ad2008-12-13 20:44:12 +0000533 select ARCH_REQUIRE_GPIOLIB
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100534 help
535 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
536 System-on-Chip devices.
537
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100538config ARCH_NS9XXX
539 bool "NetSilicon NS9xxx"
Russell Kingc7508152008-10-26 10:55:14 +0000540 select CPU_ARM926T
Uwe Kleine-König689f2a02007-09-30 20:35:09 +0100541 select GENERIC_GPIO
Uwe Kleine-Königcef59752007-09-30 20:35:48 +0100542 select GENERIC_TIME
Uwe Kleine-Königc0bb87f2007-09-30 20:36:00 +0100543 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700544 select HAVE_CLK
Uwe Kleine-König9918cda2007-02-16 15:36:55 +0100545 help
546 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
547 System.
548
549 <http://www.digi.com/products/microprocessors/index.jsp>
550
Russell King788c9702009-04-26 14:21:59 +0100551config ARCH_W90X900
552 bool "Nuvoton W90X900 CPU"
553 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100554 select ARCH_REQUIRE_GPIOLIB
555 select GENERIC_GPIO
wanzongshund2c24192009-07-14 15:09:54 +0100556 select HAVE_CLK
wanzongshun0e4a34b2009-06-10 15:50:44 +0100557 select COMMON_CLKDEV
wanzongshun58b53692009-08-14 15:36:44 +0100558 select GENERIC_TIME
559 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200560 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100561 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
562 At present, the w90x900 has been renamed nuc900, regarding
563 the ARM series product line, you can login the following
564 link address to know more.
565
566 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
567 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400568
wanzongshuna62e9032009-12-31 15:06:05 +0100569config ARCH_NUC93X
570 bool "Nuvoton NUC93X CPU"
571 select CPU_ARM926T
572 select HAVE_CLK
573 select COMMON_CLKDEV
574 help
575 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
576 low-power and high performance MPEG-4/JPEG multimedia controller chip.
577
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100578config ARCH_PNX4008
579 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000580 select CPU_ARM926T
David Brownell9483a572008-07-23 21:26:48 -0700581 select HAVE_CLK
Russell King6985a5a2009-11-20 10:32:41 +0000582 select COMMON_CLKDEV
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100583 help
584 This enables support for Philips PNX4008 mobile platform.
585
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700587 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100588 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500589 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100590 select ARCH_HAS_CPUFREQ
David Brownell0a938b92007-03-05 00:30:18 -0800591 select GENERIC_GPIO
David Brownell9483a572008-07-23 21:26:48 -0700592 select HAVE_CLK
Russell King8c3abc72008-11-08 20:25:21 +0000593 select COMMON_CLKDEV
Michael Buesch7444a722008-07-25 01:46:11 -0700594 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre45cf5ee2007-02-05 22:37:07 +0100595 select GENERIC_TIME
Eric Miao981d0f32007-07-24 01:22:43 +0100596 select GENERIC_CLOCKEVENTS
Russell Kinga88264c2007-11-12 22:45:16 +0000597 select TICK_ONESHOT
Eric Miaobd5ce432009-01-20 12:06:01 +0800598 select PLAT_PXA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000599 help
eric miao2c8086a2007-09-11 19:13:17 -0700600 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
Russell King788c9702009-04-26 14:21:59 +0100602config ARCH_MSM
603 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500604 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800605 select GENERIC_TIME
606 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800607 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800608 Support for Qualcomm MSM/QSD based systems. This runs on the
609 apps processor of the MSM/QSD and depends on a shared memory
610 interface to the modem processor which runs the baseband
611 stack and controls some vital subsystems
612 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800613
Magnus Dammc793c1b2010-02-05 11:14:49 +0000614config ARCH_SHMOBILE
615 bool "Renesas SH-Mobile"
616 help
617 Support for Renesas's SH-Mobile ARM platforms
618
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619config ARCH_RPC
620 bool "RiscPC"
621 select ARCH_ACORN
622 select FIQ
623 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100624 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100625 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000626 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000627 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100628 select ARCH_SPARSEMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 help
630 On the Acorn Risc-PC, Linux can support the internal IDE disk and
631 CD-ROM interface, serial and parallel port, and the floppy drive.
632
633config ARCH_SA1100
634 bool "SA1100-based"
Russell Kingc7508152008-10-26 10:55:14 +0000635 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100636 select ISA
Russell King05944d72006-11-30 20:43:51 +0000637 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500638 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100639 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000640 select CPU_FREQ
David Brownell0a938b92007-03-05 00:30:18 -0800641 select GENERIC_GPIO
Russell Kingd142b6e2007-11-12 21:55:12 +0000642 select GENERIC_TIME
Russell King3e238be2008-04-14 23:03:10 +0100643 select GENERIC_CLOCKEVENTS
David Brownell9483a572008-07-23 21:26:48 -0700644 select HAVE_CLK
Russell King3e238be2008-04-14 23:03:10 +0100645 select TICK_ONESHOT
Michael Buesch7444a722008-07-25 01:46:11 -0700646 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000647 help
648 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649
650config ARCH_S3C2410
Ben Dookse4d06e32007-02-16 12:12:31 +0100651 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
David Brownell0a938b92007-03-05 00:30:18 -0800652 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100653 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700654 select HAVE_CLK
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 help
656 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
657 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000658 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659
Ben Dooksa08ab632008-10-21 14:06:39 +0100660config ARCH_S3C64XX
661 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000662 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900663 select CPU_V6
Ben Dooksa08ab632008-10-21 14:06:39 +0100664 select GENERIC_GPIO
Ben Dooks89f0ce72010-01-26 15:49:15 +0900665 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100666 select HAVE_CLK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900667 select NO_IOPORT
Ben Dooks89c52ed2009-07-30 23:23:24 +0100668 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900669 select ARCH_REQUIRE_GPIOLIB
670 select SAMSUNG_CLKSRC
671 select SAMSUNG_IRQ_VIC_TIMER
672 select SAMSUNG_IRQ_UART
673 select S3C_GPIO_TRACK
674 select S3C_GPIO_PULL_UPDOWN
675 select S3C_GPIO_CFG_S3C24XX
676 select S3C_GPIO_CFG_S3C64XX
677 select S3C_DEV_NAND
678 select USB_ARCH_HAS_OHCI
679 select SAMSUNG_GPIOLIB_4BIT
Ben Dooksa08ab632008-10-21 14:06:39 +0100680 help
681 Samsung S3C64XX series based systems
682
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900683config ARCH_S5P6440
684 bool "Samsung S5P6440"
685 select CPU_V6
686 select GENERIC_GPIO
687 select HAVE_CLK
688 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
696 help
697 Samsung S5P6442 CPU based systems
698
Byungho Min5a7652f2009-06-23 21:39:42 +0900699config ARCH_S5PC1XX
700 bool "Samsung S5PC1XX"
701 select GENERIC_GPIO
702 select HAVE_CLK
703 select CPU_V7
Kukjin Kimd6d502f2010-02-22 00:02:59 +0100704 select ARM_L1_CACHE_SHIFT_6
Byungho Min5a7652f2009-06-23 21:39:42 +0900705 help
706 Samsung S5PC1XX series based systems
707
Kukjin Kim170f4e42010-02-24 16:40:44 +0900708config ARCH_S5PV210
709 bool "Samsung S5PV210/S5PC110"
710 select CPU_V7
711 select GENERIC_GPIO
712 select HAVE_CLK
713 select ARM_L1_CACHE_SHIFT_6
714 help
715 Samsung S5PV210/S5PC110 series based systems
716
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717config ARCH_SHARK
718 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000719 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100720 select ISA
721 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100722 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100723 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000724 help
725 Support for the StrongARM based Digital DNARD machine, also known
726 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
728config ARCH_LH7A40X
729 bool "Sharp LH7A40X"
Russell Kingc7508152008-10-26 10:55:14 +0000730 select CPU_ARM922T
Russell King4ba3f7c2008-10-01 21:38:23 +0100731 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
732 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 help
734 Say Y here for systems based on one of the Sharp LH7A40X
735 System on a Chip processors. These CPUs include an ARM922T
736 core with a wide array of integrated devices for
737 hand-held and low-power applications.
738
Linus Walleijd98aac72009-04-27 10:21:46 +0100739config ARCH_U300
740 bool "ST-Ericsson U300 Series"
741 depends on MMU
742 select CPU_ARM926T
Linus Walleijbc581772009-09-15 17:30:37 +0100743 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100744 select ARM_AMBA
745 select ARM_VIC
746 select GENERIC_TIME
747 select GENERIC_CLOCKEVENTS
748 select HAVE_CLK
749 select COMMON_CLKDEV
750 select GENERIC_GPIO
751 help
752 Support for ST-Ericsson U300 series mobile platforms.
753
Russell Kingccf50e22010-03-15 19:03:06 +0000754config ARCH_U8500
755 bool "ST-Ericsson U8500 Series"
756 select CPU_V7
757 select ARM_AMBA
758 select GENERIC_TIME
759 select GENERIC_CLOCKEVENTS
760 select COMMON_CLKDEV
761 help
762 Support for ST-Ericsson's Ux500 architecture
763
764config ARCH_NOMADIK
765 bool "STMicroelectronics Nomadik"
766 select ARM_AMBA
767 select ARM_VIC
768 select CPU_ARM926T
769 select HAVE_CLK
770 select COMMON_CLKDEV
771 select GENERIC_TIME
772 select GENERIC_CLOCKEVENTS
773 select GENERIC_GPIO
774 select ARCH_REQUIRE_GPIOLIB
775 help
776 Support for the Nomadik platform by ST-Ericsson
777
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100778config ARCH_DAVINCI
779 bool "TI DaVinci"
Russell Kingc7508152008-10-26 10:55:14 +0000780 select CPU_ARM926T
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100781 select GENERIC_TIME
782 select GENERIC_CLOCKEVENTS
Vladimir Barinov3d9edf02007-07-10 13:03:43 +0100783 select GENERIC_GPIO
David Brownelldce11152008-09-07 23:41:04 -0700784 select ARCH_REQUIRE_GPIOLIB
David Brownell9483a572008-07-23 21:26:48 -0700785 select HAVE_CLK
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100786 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700787 select HAVE_IDE
Kevin Hilmanc5b736d2009-03-20 17:29:01 -0700788 select COMMON_CLKDEV
David Brownell20e99692009-05-07 09:31:42 -0700789 select GENERIC_ALLOCATOR
Sekhar Noriae88e052009-11-19 15:34:01 +0530790 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100791 help
792 Support for TI's DaVinci platform.
793
Russell King3b938be2007-05-12 11:25:44 +0100794config ARCH_OMAP
795 bool "TI OMAP"
796 select GENERIC_GPIO
David Brownell9483a572008-07-23 21:26:48 -0700797 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700798 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100799 select ARCH_HAS_CPUFREQ
Russell King3b938be2007-05-12 11:25:44 +0100800 select GENERIC_TIME
Kevin Hilman06cad092007-10-18 23:04:43 -0700801 select GENERIC_CLOCKEVENTS
Sriram9af915d2010-01-29 14:20:05 -0800802 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100803 help
804 Support for TI's OMAP platform (OMAP1 and OMAP2).
805
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806endchoice
807
Russell Kingccf50e22010-03-15 19:03:06 +0000808#
809# This is sorted alphabetically by mach-* pathname. However, plat-*
810# Kconfigs may be included either alphabetically (according to the
811# plat- suffix) or along side the corresponding mach-* source.
812#
Russell King95b8f202010-01-14 11:43:54 +0000813source "arch/arm/mach-aaec2000/Kconfig"
814
815source "arch/arm/mach-at91/Kconfig"
816
817source "arch/arm/mach-bcmring/Kconfig"
818
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819source "arch/arm/mach-clps711x/Kconfig"
820
Russell King95b8f202010-01-14 11:43:54 +0000821source "arch/arm/mach-davinci/Kconfig"
822
823source "arch/arm/mach-dove/Kconfig"
824
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000825source "arch/arm/mach-ep93xx/Kconfig"
826
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827source "arch/arm/mach-footbridge/Kconfig"
828
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200829source "arch/arm/mach-gemini/Kconfig"
830
Russell King95b8f202010-01-14 11:43:54 +0000831source "arch/arm/mach-h720x/Kconfig"
832
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833source "arch/arm/mach-integrator/Kconfig"
834
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100835source "arch/arm/mach-iop32x/Kconfig"
836
837source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
Dan Williams285f5fa2006-12-07 02:59:39 +0100839source "arch/arm/mach-iop13xx/Kconfig"
840
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841source "arch/arm/mach-ixp4xx/Kconfig"
842
843source "arch/arm/mach-ixp2000/Kconfig"
844
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100845source "arch/arm/mach-ixp23xx/Kconfig"
846
Russell King95b8f202010-01-14 11:43:54 +0000847source "arch/arm/mach-kirkwood/Kconfig"
848
849source "arch/arm/mach-ks8695/Kconfig"
850
851source "arch/arm/mach-lh7a40x/Kconfig"
852
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200853source "arch/arm/mach-loki/Kconfig"
854
Russell King95b8f202010-01-14 11:43:54 +0000855source "arch/arm/mach-msm/Kconfig"
856
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200857source "arch/arm/mach-mv78xx0/Kconfig"
858
Russell King95b8f202010-01-14 11:43:54 +0000859source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860
Russell King95b8f202010-01-14 11:43:54 +0000861source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800862
Russell King95b8f202010-01-14 11:43:54 +0000863source "arch/arm/mach-nomadik/Kconfig"
864source "arch/arm/plat-nomadik/Kconfig"
865
866source "arch/arm/mach-ns9xxx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
Russell Kingd91a89102010-02-04 18:13:17 +0000868source "arch/arm/mach-nuc93x/Kconfig"
869
Tony Lindgrend48af152005-07-10 19:58:17 +0100870source "arch/arm/plat-omap/Kconfig"
871
872source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873
Tony Lindgren1dbae812005-11-10 14:26:51 +0000874source "arch/arm/mach-omap2/Kconfig"
875
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400876source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400877
Russell King95b8f202010-01-14 11:43:54 +0000878source "arch/arm/mach-pxa/Kconfig"
879source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
Russell King95b8f202010-01-14 11:43:54 +0000881source "arch/arm/mach-mmp/Kconfig"
882
883source "arch/arm/mach-realview/Kconfig"
884
885source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300886
Ben Dookscf383672009-11-10 00:14:58 +0000887source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100888source "arch/arm/plat-s3c24xx/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900889source "arch/arm/plat-s5p/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900890source "arch/arm/plat-s5pc1xx/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100891
892if ARCH_S3C2410
893source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894source "arch/arm/mach-s3c2410/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100895source "arch/arm/mach-s3c2412/Kconfig"
896source "arch/arm/mach-s3c2440/Kconfig"
Ben Dookse4d06e32007-02-16 12:12:31 +0100897source "arch/arm/mach-s3c2443/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100898endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
Ben Dooksa08ab632008-10-21 14:06:39 +0100900if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900901source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100902endif
903
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900904source "arch/arm/mach-s5p6440/Kconfig"
905
Kukjin Kim550db7f2010-01-29 10:19:26 +0900906source "arch/arm/mach-s5p6442/Kconfig"
dmitry pervushin7bd0f2f2009-04-27 10:35:04 +0100907
Byungho Min5a7652f2009-06-23 21:39:42 +0900908if ARCH_S5PC1XX
909source "arch/arm/mach-s5pc100/Kconfig"
910endif
911
Kukjin Kim170f4e42010-02-24 16:40:44 +0900912source "arch/arm/mach-s5pv210/Kconfig"
913
Russell King882d01f2010-03-02 23:40:15 +0000914source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915
Russell King882d01f2010-03-02 23:40:15 +0000916source "arch/arm/plat-stmp3xxx/Kconfig"
Brian Swetland9e73c842007-11-26 04:12:13 -0800917
Russell King95b8f202010-01-14 11:43:54 +0000918source "arch/arm/mach-u300/Kconfig"
Quinn Jensen52c543f2007-07-09 22:06:53 +0100919
Russell King95b8f202010-01-14 11:43:54 +0000920source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921
922source "arch/arm/mach-versatile/Kconfig"
923
wanzongshun7ec80dd2008-12-03 03:55:38 +0100924source "arch/arm/mach-w90x900/Kconfig"
925
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926# Definitions to make life easier
927config ARCH_ACORN
928 bool
929
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100930config PLAT_IOP
931 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700932 select GENERIC_CLOCKEVENTS
Mikael Pettersson980f2292009-10-29 11:46:55 -0700933 select GENERIC_TIME
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100934
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400935config PLAT_ORION
936 bool
937
Eric Miaobd5ce432009-01-20 12:06:01 +0800938config PLAT_PXA
939 bool
940
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941source arch/arm/mm/Kconfig
942
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100943config IWMMXT
944 bool "Enable iWMMXt support"
Eric Miao40305a52009-02-26 09:34:35 +0800945 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
946 default y if PXA27x || PXA3xx || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100947 help
948 Enable support for iWMMXt context switching at run time if
949 running on a CPU that supports it.
950
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
952config XSCALE_PMU
953 bool
954 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
955 default y
956
Jamie Iles0f4f0672010-02-02 20:23:15 +0100957config CPU_HAS_PMU
958 depends on CPU_V6 || CPU_V7 || XSCALE_PMU
959 default y
960 bool
961
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100962if !MMU
963source "arch/arm/Kconfig-nommu"
964endif
965
Catalin Marinas9cba3cc2009-04-30 17:06:03 +0100966config ARM_ERRATA_411920
967 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
968 depends on CPU_V6 && !SMP
969 help
970 Invalidation of the Instruction Cache operation can
971 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
972 It does not affect the MPCore. This option enables the ARM Ltd.
973 recommended workaround.
974
Catalin Marinas7ce236f2009-04-30 17:06:09 +0100975config ARM_ERRATA_430973
976 bool "ARM errata: Stale prediction on replaced interworking branch"
977 depends on CPU_V7
978 help
979 This option enables the workaround for the 430973 Cortex-A8
980 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
981 interworking branch is replaced with another code sequence at the
982 same virtual address, whether due to self-modifying code or virtual
983 to physical address re-mapping, Cortex-A8 does not recover from the
984 stale interworking branch prediction. This results in Cortex-A8
985 executing the new code sequence in the incorrect ARM or Thumb state.
986 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
987 and also flushes the branch target cache at every context switch.
988 Note that setting specific bits in the ACTLR register may not be
989 available in non-secure mode.
990
Catalin Marinas855c5512009-04-30 17:06:15 +0100991config ARM_ERRATA_458693
992 bool "ARM errata: Processor deadlock when a false hazard is created"
993 depends on CPU_V7
994 help
995 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
996 erratum. For very specific sequences of memory operations, it is
997 possible for a hazard condition intended for a cache line to instead
998 be incorrectly associated with a different cache line. This false
999 hazard might then cause a processor deadlock. The workaround enables
1000 the L1 caching of the NEON accesses and disables the PLD instruction
1001 in the ACTLR register. Note that setting specific bits in the ACTLR
1002 register may not be available in non-secure mode.
1003
Catalin Marinas0516e462009-04-30 17:06:20 +01001004config ARM_ERRATA_460075
1005 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1006 depends on CPU_V7
1007 help
1008 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1009 erratum. Any asynchronous access to the L2 cache may encounter a
1010 situation in which recent store transactions to the L2 cache are lost
1011 and overwritten with stale memory contents from external memory. The
1012 workaround disables the write-allocate mode for the L2 cache via the
1013 ACTLR register. Note that setting specific bits in the ACTLR register
1014 may not be available in non-secure mode.
1015
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001016config PL310_ERRATA_588369
1017 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1018 depends on CACHE_L2X0 && ARCH_OMAP4
1019 help
1020 The PL310 L2 cache controller implements three types of Clean &
1021 Invalidate maintenance operations: by Physical Address
1022 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1023 They are architecturally defined to behave as the execution of a
1024 clean operation followed immediately by an invalidate operation,
1025 both performing to the same memory location. This functionality
1026 is not correctly implemented in PL310 as clean lines are not
1027 invalidated as a result of these operations. Note that this errata
1028 uses Texas Instrument's secure monitor api.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029endmenu
1030
1031source "arch/arm/common/Kconfig"
1032
1033config FORCE_MAX_ZONEORDER
1034 int
1035 depends on SA1111
1036 default "9"
1037
1038menu "Bus support"
1039
1040config ARM_AMBA
1041 bool
1042
1043config ISA
1044 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 help
1046 Find out whether you have ISA slots on your motherboard. ISA is the
1047 name of a bus system, i.e. the way the CPU talks to the other stuff
1048 inside your box. Other bus systems are PCI, EISA, MicroChannel
1049 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1050 newer boards don't support it. If you have ISA, say Y, otherwise N.
1051
Russell King065909b2006-01-04 15:44:16 +00001052# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053config ISA_DMA
1054 bool
Russell King065909b2006-01-04 15:44:16 +00001055 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056
Russell King065909b2006-01-04 15:44:16 +00001057# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001058config ISA_DMA_API
1059 bool
Al Viro5cae8412005-05-04 05:39:22 +01001060
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061config PCI
Mike Rapoporta0113a92007-11-25 08:55:34 +01001062 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 help
1064 Find out whether you have a PCI motherboard. PCI is the name of a
1065 bus system, i.e. the way the CPU talks to the other stuff inside
1066 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1067 VESA. If you have PCI, say Y, otherwise N.
1068
Matthew Wilcox36e23592007-07-10 10:54:40 -06001069config PCI_SYSCALL
1070 def_bool PCI
1071
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072# Select the host bridge type
1073config PCI_HOST_VIA82C505
1074 bool
1075 depends on PCI && ARCH_SHARK
1076 default y
1077
Mike Rapoporta0113a92007-11-25 08:55:34 +01001078config PCI_HOST_ITE8152
1079 bool
1080 depends on PCI && MACH_ARMCORE
1081 default y
1082 select DMABOUNCE
1083
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084source "drivers/pci/Kconfig"
1085
1086source "drivers/pcmcia/Kconfig"
1087
1088endmenu
1089
1090menu "Kernel Features"
1091
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001092source "kernel/time/Kconfig"
1093
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094config SMP
1095 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell King42578c82009-06-11 15:35:00 +01001096 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
Srinidhi Kasagar850265e2009-11-28 08:24:47 +01001097 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
Russell Kingbc282482009-05-17 18:58:34 +01001098 depends on GENERIC_CLOCKEVENTS
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001099 select USE_GENERIC_SMP_HELPERS
Srinidhi Kasagar850265e2009-11-28 08:24:47 +01001100 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 help
1102 This enables support for systems with more than one CPU. If you have
1103 a system with only one CPU, like most personal computers, say N. If
1104 you have a system with more than one CPU, say Y.
1105
1106 If you say N here, the kernel will run on single and multiprocessor
1107 machines, but will use only one CPU of a multiprocessor machine. If
1108 you say Y here, the kernel will run on many, but not all, single
1109 processor machines. On a single processor machine, the kernel will
1110 run faster if you say N here.
1111
Adrian Bunk03502fa2008-02-03 15:50:21 +02001112 See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1114 <http://www.linuxdoc.org/docs.html#howto>.
1115
1116 If you don't know what to do here, say N.
1117
Russell Kinga8cbcd92009-05-16 11:51:14 +01001118config HAVE_ARM_SCU
1119 bool
1120 depends on SMP
1121 help
1122 This option enables support for the ARM system coherency unit
1123
Russell Kingf32f4ce2009-05-16 12:14:21 +01001124config HAVE_ARM_TWD
1125 bool
1126 depends on SMP
1127 help
1128 This options enables support for the ARM timer and watchdog unit
1129
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001130choice
1131 prompt "Memory split"
1132 default VMSPLIT_3G
1133 help
1134 Select the desired split between kernel and user memory.
1135
1136 If you are not absolutely sure what you are doing, leave this
1137 option alone!
1138
1139 config VMSPLIT_3G
1140 bool "3G/1G user/kernel split"
1141 config VMSPLIT_2G
1142 bool "2G/2G user/kernel split"
1143 config VMSPLIT_1G
1144 bool "1G/3G user/kernel split"
1145endchoice
1146
1147config PAGE_OFFSET
1148 hex
1149 default 0x40000000 if VMSPLIT_1G
1150 default 0x80000000 if VMSPLIT_2G
1151 default 0xC0000000
1152
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153config NR_CPUS
1154 int "Maximum number of CPUs (2-32)"
1155 range 2 32
1156 depends on SMP
1157 default "4"
1158
Russell Kinga054a812005-11-02 22:24:33 +00001159config HOTPLUG_CPU
1160 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1161 depends on SMP && HOTPLUG && EXPERIMENTAL
1162 help
1163 Say Y here to experiment with turning CPUs off and on. CPUs
1164 can be controlled through /sys/devices/system/cpu.
1165
Russell King37ee16a2005-11-08 19:08:05 +00001166config LOCAL_TIMERS
1167 bool "Use local timer interrupts"
Russell King42578c82009-06-11 15:35:00 +01001168 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
Srinidhi Kasagar850265e2009-11-28 08:24:47 +01001169 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
Russell King37ee16a2005-11-08 19:08:05 +00001170 default y
Srinidhi Kasagar850265e2009-11-28 08:24:47 +01001171 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
Russell King37ee16a2005-11-08 19:08:05 +00001172 help
1173 Enable support for local timers on SMP platforms, rather then the
1174 legacy IPI broadcast method. Local timers allows the system
1175 accounting to be spread across the timer interval, preventing a
1176 "thundering herd" at every timer tick.
1177
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001178source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179
Russell Kingf8065812006-03-02 22:41:59 +00001180config HZ
1181 int
1182 default 128 if ARCH_L7200
Kukjin Kim170f4e42010-02-24 16:40:44 +09001183 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
Russell Kingbfe65702006-03-04 11:01:53 +00001184 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001185 default AT91_TIMER_HZ if ARCH_AT91
Russell Kingf8065812006-03-02 22:41:59 +00001186 default 100
1187
Catalin Marinas16c79652009-07-24 12:33:02 +01001188config THUMB2_KERNEL
1189 bool "Compile the kernel in Thumb-2 mode"
1190 depends on CPU_V7 && EXPERIMENTAL
1191 select AEABI
1192 select ARM_ASM_UNIFIED
1193 help
1194 By enabling this option, the kernel will be compiled in
1195 Thumb-2 mode. A compiler/assembler that understand the unified
1196 ARM-Thumb syntax is needed.
1197
1198 If unsure, say N.
1199
Catalin Marinas0becb082009-07-24 12:32:53 +01001200config ARM_ASM_UNIFIED
1201 bool
1202
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001203config AEABI
1204 bool "Use the ARM EABI to compile the kernel"
1205 help
1206 This option allows for the kernel to be compiled using the latest
1207 ARM ABI (aka EABI). This is only useful if you are using a user
1208 space environment that is also compiled with EABI.
1209
1210 Since there are major incompatibilities between the legacy ABI and
1211 EABI, especially with regard to structure member alignment, this
1212 option also changes the kernel syscall calling convention to
1213 disambiguate both ABIs and allow for backward compatibility support
1214 (selected with CONFIG_OABI_COMPAT).
1215
1216 To use this you need GCC version 4.0.0 or later.
1217
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001218config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001219 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +00001220 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001221 default y
1222 help
1223 This option preserves the old syscall interface along with the
1224 new (ARM EABI) one. It also provides a compatibility layer to
1225 intercept syscalls that have structure arguments which layout
1226 in memory differs between the legacy ABI and the new ARM EABI
1227 (only for non "thumb" binaries). This option adds a tiny
1228 overhead to all syscalls and produces a slightly larger kernel.
1229 If you know you'll be using only pure EABI user space then you
1230 can say N here. If this option is not selected and you attempt
1231 to execute a legacy ABI binary then the result will be
1232 UNPREDICTABLE (in fact it can be predicted that it won't work
1233 at all). If in doubt say Y.
1234
Mel Gormaneb335752009-05-13 17:34:48 +01001235config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001236 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001237
Russell King07a2f732008-10-01 21:39:58 +01001238# Discontigmem is deprecated
Dave Hansen3f22ab22005-06-23 00:07:43 -07001239config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001241
Russell King05944d72006-11-30 20:43:51 +00001242config ARCH_SPARSEMEM_ENABLE
1243 bool
1244
Russell King07a2f732008-10-01 21:39:58 +01001245config ARCH_SPARSEMEM_DEFAULT
1246 def_bool ARCH_SPARSEMEM_ENABLE
1247
Russell King05944d72006-11-30 20:43:51 +00001248config ARCH_SELECT_MEMORY_MODEL
Russell King07a2f732008-10-01 21:39:58 +01001249 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
Russell King05944d72006-11-30 20:43:51 +00001250
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001251config NODES_SHIFT
1252 int
1253 default "4" if ARCH_LH7A40X
1254 default "2"
1255 depends on NEED_MULTIPLE_NODES
1256
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001257config HIGHMEM
1258 bool "High Memory Support (EXPERIMENTAL)"
1259 depends on MMU && EXPERIMENTAL
1260 help
1261 The address space of ARM processors is only 4 Gigabytes large
1262 and it has to accommodate user address space, kernel address
1263 space as well as some memory mapped IO. That means that, if you
1264 have a large amount of physical memory and/or IO, not all of the
1265 memory can be "permanently mapped" by the kernel. The physical
1266 memory that is not permanently mapped is called "high memory".
1267
1268 Depending on the selected kernel/user memory split, minimum
1269 vmalloc space and actual amount of RAM, you may not need this
1270 option which should result in a slightly faster kernel.
1271
1272 If unsure, say n.
1273
Russell King65cec8e2009-08-17 20:02:06 +01001274config HIGHPTE
1275 bool "Allocate 2nd-level pagetables from highmem"
1276 depends on HIGHMEM
1277 depends on !OUTER_CACHE
1278
Jamie Iles1b8873a2010-02-02 20:25:44 +01001279config HW_PERF_EVENTS
1280 bool "Enable hardware performance counter support for perf events"
Jean PIHET796d1292010-01-26 18:51:05 +01001281 depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
Jamie Iles1b8873a2010-02-02 20:25:44 +01001282 default y
1283 help
1284 Enable hardware performance counter support for perf events. If
1285 disabled, perf events will use software events only.
1286
Dave Hansen3f22ab22005-06-23 00:07:43 -07001287source "mm/Kconfig"
1288
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289config LEDS
1290 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001291 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001292 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1294 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001295 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001296 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042f2009-05-30 13:56:13 +01001297 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298 help
1299 If you say Y here, the LEDs on your machine will be used
1300 to provide useful information about your current system status.
1301
1302 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1303 be able to select which LEDs are active using the options below. If
1304 you are compiling a kernel for the EBSA-110 or the LART however, the
1305 red LED will simply flash regularly to indicate that the system is
1306 still functional. It is safe to say Y here if you have a CATS
1307 system, but the driver will do nothing.
1308
1309config LEDS_TIMER
1310 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001311 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1312 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001314 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315 default y if ARCH_EBSA110
1316 help
1317 If you say Y here, one of the system LEDs (the green one on the
1318 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1319 will flash regularly to indicate that the system is still
1320 operational. This is mainly useful to kernel hackers who are
1321 debugging unstable kernels.
1322
1323 The LART uses the same LED for both Timer LED and CPU usage LED
1324 functions. You may choose to use both, but the Timer LED function
1325 will overrule the CPU usage LED.
1326
1327config LEDS_CPU
1328 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001329 !ARCH_OMAP) \
1330 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1331 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332 depends on LEDS
1333 help
1334 If you say Y here, the red LED will be used to give a good real
1335 time indication of CPU usage, by lighting whenever the idle task
1336 is not currently executing.
1337
1338 The LART uses the same LED for both Timer LED and CPU usage LED
1339 functions. You may choose to use both, but the Timer LED function
1340 will overrule the CPU usage LED.
1341
1342config ALIGNMENT_TRAP
1343 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001344 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001345 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001346 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001348 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1350 address divisible by 4. On 32-bit ARM processors, these non-aligned
1351 fetch/store instructions will be emulated in software if you say
1352 here, which has a severe performance impact. This is necessary for
1353 correct operation of some network protocols. With an IP-only
1354 configuration it is safe to say N, otherwise say Y.
1355
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001356config UACCESS_WITH_MEMCPY
1357 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1358 depends on MMU && EXPERIMENTAL
1359 default y if CPU_FEROCEON
1360 help
1361 Implement faster copy_to_user and clear_user methods for CPU
1362 cores where a 8-word STM instruction give significantly higher
1363 memory write throughput than a sequence of individual 32bit stores.
1364
1365 A possible side effect is a slight increase in scheduling latency
1366 between threads sharing the same address space if they invoke
1367 such copy operations with large buffers.
1368
1369 However, if the CPU data cache is using a write-allocate mode,
1370 this option is unlikely to provide any performance gain.
1371
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372endmenu
1373
1374menu "Boot options"
1375
1376# Compressed boot loader in ROM. Yes, we really want to ask about
1377# TEXT and BSS so we preserve their values in the config files.
1378config ZBOOT_ROM_TEXT
1379 hex "Compressed ROM boot loader base address"
1380 default "0"
1381 help
1382 The physical address at which the ROM-able zImage is to be
1383 placed in the target. Platforms which normally make use of
1384 ROM-able zImage formats normally set this to a suitable
1385 value in their defconfig file.
1386
1387 If ZBOOT_ROM is not enabled, this has no effect.
1388
1389config ZBOOT_ROM_BSS
1390 hex "Compressed ROM boot loader BSS address"
1391 default "0"
1392 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001393 The base address of an area of read/write memory in the target
1394 for the ROM-able zImage which must be available while the
1395 decompressor is running. It must be large enough to hold the
1396 entire decompressed kernel plus an additional 128 KiB.
1397 Platforms which normally make use of ROM-able zImage formats
1398 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001399
1400 If ZBOOT_ROM is not enabled, this has no effect.
1401
1402config ZBOOT_ROM
1403 bool "Compressed boot loader in ROM/flash"
1404 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1405 help
1406 Say Y here if you intend to execute your compressed kernel image
1407 (zImage) directly from ROM or flash. If unsure, say N.
1408
1409config CMDLINE
1410 string "Default kernel command string"
1411 default ""
1412 help
1413 On some architectures (EBSA110 and CATS), there is currently no way
1414 for the boot loader to pass arguments to the kernel. For these
1415 architectures, you should supply some command-line options at build
1416 time by entering them here. As a minimum, you should specify the
1417 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1418
1419config XIP_KERNEL
1420 bool "Kernel Execute-In-Place from ROM"
1421 depends on !ZBOOT_ROM
1422 help
1423 Execute-In-Place allows the kernel to run from non-volatile storage
1424 directly addressable by the CPU, such as NOR flash. This saves RAM
1425 space since the text section of the kernel is not loaded from flash
1426 to RAM. Read-write sections, such as the data section and stack,
1427 are still copied to RAM. The XIP kernel is not compressed since
1428 it has to run directly from flash, so it will take more space to
1429 store it. The flash address used to link the kernel object files,
1430 and for storing it, is configuration dependent. Therefore, if you
1431 say Y here, you must know the proper physical address where to
1432 store the kernel image depending on your own flash memory usage.
1433
1434 Also note that the make target becomes "make xipImage" rather than
1435 "make zImage" or "make Image". The final kernel binary to put in
1436 ROM memory will be arch/arm/boot/xipImage.
1437
1438 If unsure, say N.
1439
1440config XIP_PHYS_ADDR
1441 hex "XIP Kernel Physical Location"
1442 depends on XIP_KERNEL
1443 default "0x00080000"
1444 help
1445 This is the physical address in your flash memory the kernel will
1446 be linked for and stored to. This address is dependent on your
1447 own flash usage.
1448
Richard Purdiec587e4a2007-02-06 21:29:00 +01001449config KEXEC
1450 bool "Kexec system call (EXPERIMENTAL)"
1451 depends on EXPERIMENTAL
1452 help
1453 kexec is a system call that implements the ability to shutdown your
1454 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001455 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001456 you can start any kernel with it, not just Linux.
1457
1458 It is an ongoing process to be certain the hardware in a machine
1459 is properly shutdown, so do not be surprised if this code does not
1460 initially work for you. It may help to enable device hotplugging
1461 support.
1462
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001463config ATAGS_PROC
1464 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01001465 depends on KEXEC
1466 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001467 help
1468 Should the atags used to boot the kernel be exported in an "atags"
1469 file in procfs. Useful with kexec.
1470
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471endmenu
1472
Russell Kingac9d7ef2008-08-18 17:26:00 +01001473menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001474
Ben Dooks89c52ed2009-07-30 23:23:24 +01001475if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07001476
1477source "drivers/cpufreq/Kconfig"
1478
1479config CPU_FREQ_SA1100
1480 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481
1482config CPU_FREQ_SA1110
1483 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484
1485config CPU_FREQ_INTEGRATOR
1486 tristate "CPUfreq driver for ARM Integrator CPUs"
1487 depends on ARCH_INTEGRATOR && CPU_FREQ
1488 default y
1489 help
1490 This enables the CPUfreq driver for ARM Integrator CPUs.
1491
1492 For details, take a look at <file:Documentation/cpu-freq>.
1493
1494 If in doubt, say Y.
1495
Russell King9e2697f2007-12-14 13:30:14 +00001496config CPU_FREQ_PXA
1497 bool
1498 depends on CPU_FREQ && ARCH_PXA && PXA25x
1499 default y
1500 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1501
Mark Brownb3748dd2009-06-15 11:23:20 +01001502config CPU_FREQ_S3C64XX
1503 bool "CPUfreq support for Samsung S3C64XX CPUs"
1504 depends on CPU_FREQ && CPU_S3C6410
1505
Ben Dooks9d56c022009-07-30 23:23:25 +01001506config CPU_FREQ_S3C
1507 bool
1508 help
1509 Internal configuration node for common cpufreq on Samsung SoC
1510
1511config CPU_FREQ_S3C24XX
1512 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1513 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1514 select CPU_FREQ_S3C
1515 help
1516 This enables the CPUfreq driver for the Samsung S3C24XX family
1517 of CPUs.
1518
1519 For details, take a look at <file:Documentation/cpu-freq>.
1520
1521 If in doubt, say N.
1522
1523config CPU_FREQ_S3C24XX_PLL
1524 bool "Support CPUfreq changing of PLL frequency"
1525 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1526 help
1527 Compile in support for changing the PLL frequency from the
1528 S3C24XX series CPUfreq driver. The PLL takes time to settle
1529 after a frequency change, so by default it is not enabled.
1530
1531 This also means that the PLL tables for the selected CPU(s) will
1532 be built which may increase the size of the kernel image.
1533
1534config CPU_FREQ_S3C24XX_DEBUG
1535 bool "Debug CPUfreq Samsung driver core"
1536 depends on CPU_FREQ_S3C24XX
1537 help
1538 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1539
1540config CPU_FREQ_S3C24XX_IODEBUG
1541 bool "Debug CPUfreq Samsung driver IO timing"
1542 depends on CPU_FREQ_S3C24XX
1543 help
1544 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1545
Ben Dookse6d197a2009-07-30 23:23:42 +01001546config CPU_FREQ_S3C24XX_DEBUGFS
1547 bool "Export debugfs for CPUFreq"
1548 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1549 help
1550 Export status information via debugfs.
1551
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552endif
1553
Russell Kingac9d7ef2008-08-18 17:26:00 +01001554source "drivers/cpuidle/Kconfig"
1555
1556endmenu
1557
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558menu "Floating point emulation"
1559
1560comment "At least one emulation must be selected"
1561
1562config FPE_NWFPE
1563 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001564 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565 ---help---
1566 Say Y to include the NWFPE floating point emulator in the kernel.
1567 This is necessary to run most binaries. Linux does not currently
1568 support floating point hardware so you need to say Y here even if
1569 your machine has an FPA or floating point co-processor podule.
1570
1571 You may say N here if you are going to load the Acorn FPEmulator
1572 early in the bootup.
1573
1574config FPE_NWFPE_XP
1575 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00001576 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577 help
1578 Say Y to include 80-bit support in the kernel floating-point
1579 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1580 Note that gcc does not generate 80-bit operations by default,
1581 so in most cases this option only enlarges the size of the
1582 floating point emulator without any good reason.
1583
1584 You almost surely want to say N here.
1585
1586config FPE_FASTFPE
1587 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00001588 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589 ---help---
1590 Say Y here to include the FAST floating point emulator in the kernel.
1591 This is an experimental much faster emulator which now also has full
1592 precision for the mantissa. It does not support any exceptions.
1593 It is very simple, and approximately 3-6 times faster than NWFPE.
1594
1595 It should be sufficient for most programs. It may be not suitable
1596 for scientific calculations, but you have to check this for yourself.
1597 If you do not feel you need a faster FP emulation you should better
1598 choose NWFPE.
1599
1600config VFP
1601 bool "VFP-format floating point maths"
Russell Kingc00d4ff2008-01-28 13:21:30 +00001602 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07001603 help
1604 Say Y to include VFP support code in the kernel. This is needed
1605 if your hardware includes a VFP unit.
1606
1607 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1608 release notes and additional status information.
1609
1610 Say N if your target does not have VFP hardware.
1611
Catalin Marinas25ebee02007-09-25 15:22:24 +01001612config VFPv3
1613 bool
1614 depends on VFP
1615 default y if CPU_V7
1616
Catalin Marinasb5872db2008-01-10 19:16:17 +01001617config NEON
1618 bool "Advanced SIMD (NEON) Extension support"
1619 depends on VFPv3 && CPU_V7
1620 help
1621 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1622 Extension.
1623
Linus Torvalds1da177e2005-04-16 15:20:36 -07001624endmenu
1625
1626menu "Userspace binary formats"
1627
1628source "fs/Kconfig.binfmt"
1629
1630config ARTHUR
1631 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001632 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001633 help
1634 Say Y here to include the kernel code necessary if you want to run
1635 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1636 experimental; if this sounds frightening, say N and sleep in peace.
1637 You can also say M here to compile this support as a module (which
1638 will be called arthur).
1639
1640endmenu
1641
1642menu "Power management options"
1643
Russell Kingeceab4a2005-11-15 11:31:41 +00001644source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001645
Johannes Bergf4cb5702007-12-08 02:14:00 +01001646config ARCH_SUSPEND_POSSIBLE
1647 def_bool y
1648
Linus Torvalds1da177e2005-04-16 15:20:36 -07001649endmenu
1650
Sam Ravnborgd5950b42005-07-11 21:03:49 -07001651source "net/Kconfig"
1652
Uwe Kleine-Königac251502009-08-13 21:09:21 +02001653source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001654
1655source "fs/Kconfig"
1656
Linus Torvalds1da177e2005-04-16 15:20:36 -07001657source "arch/arm/Kconfig.debug"
1658
1659source "security/Kconfig"
1660
1661source "crypto/Kconfig"
1662
1663source "lib/Kconfig"