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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Mark Brown7563bbf2012-04-15 10:52:54 +01004 select ARCH_HAVE_CUSTOM_GPIO_H
David Woodhousee17c6d52008-06-17 12:19:34 +01005 select HAVE_AOUT
Russell King24056f52011-01-03 11:29:28 +00006 select HAVE_DMA_API_DEBUG
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +02007 select HAVE_IDE if PCI || ISA || PCMCIA
Marek Szyprowski2dc6a012012-02-10 19:55:20 +01008 select HAVE_DMA_ATTRS
Marek Szyprowskic7909502011-12-29 13:09:51 +01009 select HAVE_DMA_CONTIGUOUS if (CPU_V6 || CPU_V6K || CPU_V7)
Russell King2778f622010-07-09 16:27:52 +010010 select HAVE_MEMBLOCK
Alessandro Zummo12b824f2006-03-27 01:16:35 -080011 select RTC_LIB
Ralf Baechle75e71532007-02-09 17:08:58 +000012 select SYS_SUPPORTS_APM_EMULATION
Russell Kinga41297a2011-01-17 15:48:33 +000013 select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
Will Deaconfe166142010-04-30 11:37:51 +010014 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Rabin Vincent09f05d82012-02-18 17:52:41 +010015 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060016 select HAVE_ARCH_KGDB
Wade Farnsworth0693bf62012-04-04 16:19:47 +010017 select HAVE_ARCH_TRACEHOOK
Jon Medhurst856bc352011-06-14 13:09:39 +010018 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)
Rabin Vincent80be7a72010-08-10 19:58:17 +010021 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
22 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Rabin Vincent0e341af2010-11-06 23:03:53 +053023 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
David Daneye39f5602012-01-10 15:10:21 -080024 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
Dmitry Baryshkov1fe53262008-07-18 13:30:14 +040025 select HAVE_GENERIC_DMA_COHERENT
Albin Tonnerree7db7b42010-01-08 14:42:43 -080026 select HAVE_KERNEL_GZIP
27 select HAVE_KERNEL_LZO
Albin Tonnerre6e8699f2010-04-03 11:40:28 +010028 select HAVE_KERNEL_LZMA
Imre Kaloza7f464f2012-01-26 13:08:57 +010029 select HAVE_KERNEL_XZ
Peter Zijlstrae360adb2010-10-14 14:01:34 +080030 select HAVE_IRQ_WORK
Jamie Iles7ada1892010-02-02 20:24:58 +010031 select HAVE_PERF_EVENTS
32 select PERF_USE_VMALLOC
Will Deacone513f8b2010-06-25 12:24:53 +010033 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kinge399b1a2011-01-17 15:08:32 +000034 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
Rabin Vincented604532010-11-30 17:36:48 +010035 select HAVE_C_RECORDMCOUNT
Lennert Buytenheke2a93ec2010-11-29 10:06:57 +010036 select HAVE_GENERIC_HARDIRQS
Stephen Boyd37e74be2012-04-16 22:53:44 +010037 select HARDIRQS_SW_RESEND
38 select GENERIC_IRQ_PROBE
Thomas Gleixner25a56622011-03-24 12:02:11 +010039 select GENERIC_IRQ_SHOW
Thomas Gleixnerd4aa8b12012-05-21 11:06:17 +020040 select GENERIC_IRQ_PROBE
41 select HARDIRQS_SW_RESEND
Santosh Shilimkar1fb902632011-09-10 11:30:28 +053042 select CPU_PM if (SUSPEND || CPU_IDLE)
Michael S. Tsirkine5bfb722011-11-24 20:57:23 +020043 select GENERIC_PCI_IOMAP
Sam Ravnborge47b65b2012-05-21 20:45:37 +020044 select HAVE_BPF_JIT
Thomas Gleixner84ec6d52012-04-20 13:05:50 +000045 select GENERIC_SMP_IDLE_THREAD
Anna-Maria Gleixner3d92a712012-05-18 16:45:44 +000046 select KTIME_SCALAR
47 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 help
49 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000050 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000052 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 Europe. There is an ARM Linux project with a web page at
54 <http://www.arm.linux.org.uk/>.
55
Russell King74facff2011-06-02 11:16:22 +010056config ARM_HAS_SG_CHAIN
57 bool
58
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020059config NEED_SG_DMA_LENGTH
60 bool
61
62config ARM_DMA_USE_IOMMU
63 select NEED_SG_DMA_LENGTH
64 select ARM_HAS_SG_CHAIN
65 bool
66
Russell King1a189b92008-04-13 21:41:55 +010067config HAVE_PWM
68 bool
69
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +010070config MIGHT_HAVE_PCI
71 bool
72
Ralf Baechle75e71532007-02-09 17:08:58 +000073config SYS_SUPPORTS_APM_EMULATION
74 bool
75
David Brownell0a938b92007-03-05 00:30:18 -080076config GENERIC_GPIO
77 bool
David Brownell0a938b92007-03-05 00:30:18 -080078
Linus Walleijbc581772009-09-15 17:30:37 +010079config HAVE_TCM
80 bool
81 select GENERIC_ALLOCATOR
82
Russell Kinge119bff2010-01-10 17:23:29 +000083config HAVE_PROC_CPU
84 bool
85
Al Viro5ea81762007-02-11 15:41:31 +000086config NO_IOPORT
87 bool
Al Viro5ea81762007-02-11 15:41:31 +000088
Linus Torvalds1da177e2005-04-16 15:20:36 -070089config EISA
90 bool
91 ---help---
92 The Extended Industry Standard Architecture (EISA) bus was
93 developed as an open alternative to the IBM MicroChannel bus.
94
95 The EISA bus provided some of the features of the IBM MicroChannel
96 bus while maintaining backward compatibility with cards made for
97 the older ISA bus. The EISA bus saw limited use between 1988 and
98 1995 when it was made obsolete by the PCI bus.
99
100 Say Y here if you are building a kernel for an EISA-based machine.
101
102 Otherwise, say N.
103
104config SBUS
105 bool
106
Russell Kingf16fb1e2007-04-28 09:59:37 +0100107config STACKTRACE_SUPPORT
108 bool
109 default y
110
Nicolas Pitref76e9152008-04-24 01:31:46 -0400111config HAVE_LATENCYTOP_SUPPORT
112 bool
113 depends on !SMP
114 default y
115
Russell Kingf16fb1e2007-04-28 09:59:37 +0100116config LOCKDEP_SUPPORT
117 bool
118 default y
119
Russell King7ad1bcb2006-08-27 12:07:02 +0100120config TRACE_IRQFLAGS_SUPPORT
121 bool
122 default y
123
Nick Piggin95c354f2008-01-30 13:31:20 +0100124config GENERIC_LOCKBREAK
125 bool
126 default y
127 depends on SMP && PREEMPT
128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129config RWSEM_GENERIC_SPINLOCK
130 bool
131 default y
132
133config RWSEM_XCHGADD_ALGORITHM
134 bool
135
David Howellsf0d1b0b2006-12-08 02:37:49 -0800136config ARCH_HAS_ILOG2_U32
137 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800138
139config ARCH_HAS_ILOG2_U64
140 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800141
Ben Dooks89c52ed2009-07-30 23:23:24 +0100142config ARCH_HAS_CPUFREQ
143 bool
144 help
145 Internal node to signify that the ARCH has CPUFREQ support
146 and that the relevant menu configurations are displayed for
147 it.
148
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800149config GENERIC_HWEIGHT
150 bool
151 default y
152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153config GENERIC_CALIBRATE_DELAY
154 bool
155 default y
156
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100157config ARCH_MAY_HAVE_PC_FDC
158 bool
159
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800160config ZONE_DMA
161 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800162
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800163config NEED_DMA_MAP_STATE
164 def_bool y
165
Rob Herring58af4a22012-03-20 14:33:01 -0500166config ARCH_HAS_DMA_SET_COHERENT_MASK
167 bool
168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169config GENERIC_ISA_DMA
170 bool
171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172config FIQ
173 bool
174
Rob Herring13a50452012-02-07 09:28:22 -0600175config NEED_RET_TO_USER
176 bool
177
Al Viro034d2f52005-12-19 16:27:59 -0500178config ARCH_MTD_XIP
179 bool
180
Hyok S. Choic760fc12006-03-27 15:18:50 +0100181config VECTORS_BASE
182 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900183 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100184 default DRAM_BASE if REMAP_VECTORS_TO_RAM
185 default 0x00000000
186 help
187 The base address of exception vectors.
188
Russell Kingdc21af92011-01-04 19:09:43 +0000189config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100190 bool "Patch physical to virtual translations at runtime" if EMBEDDED
191 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100192 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000193 depends on !ARCH_REALVIEW || !SPARSEMEM
194 help
Russell King111e9a52011-05-12 10:02:42 +0100195 Patch phys-to-virt and virt-to-phys translation functions at
196 boot and module load time according to the position of the
197 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000198
Russell King111e9a52011-05-12 10:02:42 +0100199 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100200 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000201
Russell Kingc1beced2011-08-10 10:23:45 +0100202 Only disable this option if you know that you do not require
203 this feature (eg, building a kernel for a single machine) and
204 you need to shrink the kernel to the minimal size.
205
Rob Herringc334bc12012-03-04 22:03:33 -0600206config NEED_MACH_IO_H
207 bool
208 help
209 Select this when mach/io.h is required to provide special
210 definitions for this platform. The need for mach/io.h should
211 be avoided when possible.
212
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400213config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400214 bool
Russell King111e9a52011-05-12 10:02:42 +0100215 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400216 Select this when mach/memory.h is required to provide special
217 definitions for this platform. The need for mach/memory.h should
218 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400219
220config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100221 hex "Physical address of main memory" if MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400222 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
Nicolas Pitre974c0722011-12-02 23:09:42 +0100223 default DRAM_BASE if !MMU
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400224 help
225 Please provide the physical address corresponding to the
226 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000227
Simon Glass87e040b2011-08-16 23:44:26 +0100228config GENERIC_BUG
229 def_bool y
230 depends on BUG
231
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232source "init/Kconfig"
233
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700234source "kernel/Kconfig.freezer"
235
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236menu "System Type"
237
Hyok S. Choi3c427972009-07-24 12:35:00 +0100238config MMU
239 bool "MMU-based Paged Memory Management Support"
240 default y
241 help
242 Select if you want MMU-based virtualised addressing space
243 support by paged memory management. If unsure, say 'Y'.
244
Russell Kingccf50e22010-03-15 19:03:06 +0000245#
246# The "ARM system type" choice list is ordered alphabetically by option
247# text. Please add new entries in the option alphabetic order.
248#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249choice
250 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000251 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100253config ARCH_INTEGRATOR
254 bool "ARM Ltd. Integrator family"
255 select ARM_AMBA
Ben Dooks89c52ed2009-07-30 23:23:24 +0100256 select ARCH_HAS_CPUFREQ
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100257 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900258 select HAVE_MACH_CLKDEV
Linus Walleij9904f792011-12-09 10:29:23 +0100259 select HAVE_TCM
Russell Kingc5a0adb2010-01-16 20:16:10 +0000260 select ICST
Russell King13edd862010-01-15 21:49:23 +0000261 select GENERIC_CLOCKEVENTS
Russell Kingf4b8b312010-01-14 12:48:06 +0000262 select PLAT_VERSATILE
Russell Kingc41b16f2011-01-19 15:32:15 +0000263 select PLAT_VERSATILE_FPGA_IRQ
Rob Herringc334bc12012-03-04 22:03:33 -0600264 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400265 select NEED_MACH_MEMORY_H
Linus Walleij695436e2012-02-26 10:46:48 +0100266 select SPARSE_IRQ
Linus Walleij3108e6a2012-04-28 14:33:47 +0100267 select MULTI_IRQ_HANDLER
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100268 help
269 Support for ARM's Integrator platform.
270
271config ARCH_REALVIEW
272 bool "ARM Ltd. RealView family"
273 select ARM_AMBA
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100274 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900275 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000276 select ICST
Catalin Marinasae30cea2008-02-04 17:26:55 +0100277 select GENERIC_CLOCKEVENTS
Russell Kingeb7fffa2009-07-05 22:41:31 +0100278 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000279 select PLAT_VERSATILE
Russell King3cb5ee42011-01-18 20:13:20 +0000280 select PLAT_VERSATILE_CLCD
Russell Kinge3887712010-01-14 13:30:16 +0000281 select ARM_TIMER_SP804
Colin Tuckleyb56ba8a2010-02-24 15:23:10 +0100282 select GPIO_PL061 if GPIOLIB
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400283 select NEED_MACH_MEMORY_H
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100284 help
285 This enables support for ARM Ltd RealView boards.
286
287config ARCH_VERSATILE
288 bool "ARM Ltd. Versatile family"
289 select ARM_AMBA
290 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100291 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900292 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000293 select ICST
Kevin Hilman89df1272007-03-08 20:30:38 +0100294 select GENERIC_CLOCKEVENTS
Russell Kingbbeddc42009-07-05 22:43:01 +0100295 select ARCH_WANT_OPTIONAL_GPIOLIB
Russell Kingf4b8b312010-01-14 12:48:06 +0000296 select PLAT_VERSATILE
Russell King3414ba82011-01-18 20:12:10 +0000297 select PLAT_VERSATILE_CLCD
Russell Kingc41b16f2011-01-19 15:32:15 +0000298 select PLAT_VERSATILE_FPGA_IRQ
Russell Kinge3887712010-01-14 13:30:16 +0000299 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100300 help
301 This enables support for ARM Ltd Versatile board.
302
Russell Kingceade892010-02-11 21:44:53 +0000303config ARCH_VEXPRESS
304 bool "ARM Ltd. Versatile Express family"
305 select ARCH_WANT_OPTIONAL_GPIOLIB
306 select ARM_AMBA
307 select ARM_TIMER_SP804
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100308 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900309 select HAVE_MACH_CLKDEV
Russell Kingceade892010-02-11 21:44:53 +0000310 select GENERIC_CLOCKEVENTS
Russell Kingceade892010-02-11 21:44:53 +0000311 select HAVE_CLK
Nick Bowler95c34f82011-01-21 15:51:06 +0100312 select HAVE_PATA_PLATFORM
Russell Kingceade892010-02-11 21:44:53 +0000313 select ICST
Russell Kingba81f502012-02-15 11:55:22 +0000314 select NO_IOPORT
Russell Kingceade892010-02-11 21:44:53 +0000315 select PLAT_VERSATILE
Russell King0fb44b92011-01-18 20:13:51 +0000316 select PLAT_VERSATILE_CLCD
Russell Kingceade892010-02-11 21:44:53 +0000317 help
318 This enables support for the ARM Ltd Versatile Express boards.
319
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100320config ARCH_AT91
321 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100322 select ARCH_REQUIRE_GPIOLIB
David Brownell93686ae2008-07-28 15:46:22 -0700323 select HAVE_CLK
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100324 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100325 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500326 select NEED_MACH_IO_H if PCCARD
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100327 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100328 This enables support for systems based on Atmel
329 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100330
Russell Kingccf50e22010-03-15 19:03:06 +0000331config ARCH_BCMRING
332 bool "Broadcom BCMRING"
333 depends on MMU
334 select CPU_V6
335 select ARM_AMBA
Russell King82d63732011-05-12 13:43:39 +0100336 select ARM_TIMER_SP804
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100337 select CLKDEV_LOOKUP
Russell Kingccf50e22010-03-15 19:03:06 +0000338 select GENERIC_CLOCKEVENTS
339 select ARCH_WANT_OPTIONAL_GPIOLIB
340 help
341 Support for Broadcom's BCMRing platform.
342
Rob Herring220e6cf2011-06-07 10:02:55 -0500343config ARCH_HIGHBANK
344 bool "Calxeda Highbank-based"
345 select ARCH_WANT_OPTIONAL_GPIOLIB
346 select ARM_AMBA
347 select ARM_GIC
348 select ARM_TIMER_SP804
Dave Martin22d80372011-12-12 16:17:34 +0000349 select CACHE_L2X0
Rob Herring220e6cf2011-06-07 10:02:55 -0500350 select CLKDEV_LOOKUP
351 select CPU_V7
352 select GENERIC_CLOCKEVENTS
353 select HAVE_ARM_SCU
Dave Martin3b556582011-12-07 15:38:04 +0000354 select HAVE_SMP
Rob Herringfdfa64a2012-01-03 14:44:31 -0600355 select SPARSE_IRQ
Rob Herring220e6cf2011-06-07 10:02:55 -0500356 select USE_OF
357 help
358 Support for the Calxeda Highbank SoC based boards.
359
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360config ARCH_CLPS711X
Alexander Shiyan0e2fce52012-05-14 21:46:10 +0400361 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000362 select CPU_ARM720T
John Stultz5cfc8ee2010-03-24 00:22:36 +0000363 select ARCH_USES_GETTIMEOFFSET
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400364 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000365 help
Alexander Shiyan0e2fce52012-05-14 21:46:10 +0400366 Support for Cirrus Logic 711x/721x/731x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300368config ARCH_CNS3XXX
369 bool "Cavium Networks CNS3XXX family"
Imre Kaloz00d27112011-07-07 12:19:09 +0200370 select CPU_V6K
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300371 select GENERIC_CLOCKEVENTS
372 select ARM_GIC
Dave Martince5ea9f2011-11-29 15:56:19 +0000373 select MIGHT_HAVE_CACHE_L2X0
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100374 select MIGHT_HAVE_PCI
Anton Vorontsov5f32f7a2010-05-28 13:10:52 +0400375 select PCI_DOMAINS if PCI
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300376 help
377 Support for Cavium Networks CNS3XXX platform.
378
Russell King788c9702009-04-26 14:21:59 +0100379config ARCH_GEMINI
380 bool "Cortina Systems Gemini"
381 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100382 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000383 select ARCH_USES_GETTIMEOFFSET
Russell King788c9702009-04-26 14:21:59 +0100384 help
385 Support for the Cortina Systems Gemini family SoCs
386
Arnd Bergmann3a6cb8c2011-07-17 21:43:26 +0200387config ARCH_PRIMA2
388 bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
389 select CPU_V7
Arnd Bergmann3a6cb8c2011-07-17 21:43:26 +0200390 select NO_IOPORT
391 select GENERIC_CLOCKEVENTS
392 select CLKDEV_LOOKUP
393 select GENERIC_IRQ_CHIP
Dave Martince5ea9f2011-11-29 15:56:19 +0000394 select MIGHT_HAVE_CACHE_L2X0
Barry Songcbd8d842012-05-15 10:35:46 +0800395 select PINCTRL
396 select PINCTRL_SIRF
Arnd Bergmann3a6cb8c2011-07-17 21:43:26 +0200397 select USE_OF
398 select ZONE_DMA
399 help
400 Support for CSR SiRFSoC ARM Cortex A9 Platform
401
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402config ARCH_EBSA110
403 bool "EBSA-110"
Russell Kingc7508152008-10-26 10:55:14 +0000404 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100405 select ISA
Russell Kingc5eb2a22007-03-03 11:54:19 +0000406 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000407 select ARCH_USES_GETTIMEOFFSET
Rob Herringc334bc12012-03-04 22:03:33 -0600408 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400409 select NEED_MACH_MEMORY_H
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 help
411 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000412 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 Ethernet interface, two PCMCIA sockets, two serial ports and a
414 parallel port.
415
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000416config ARCH_EP93XX
417 bool "EP93xx-based"
Russell Kingc7508152008-10-26 10:55:14 +0000418 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000419 select ARM_AMBA
420 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100421 select CLKDEV_LOOKUP
Michael Buesch7444a722008-07-25 01:46:11 -0700422 select ARCH_REQUIRE_GPIOLIB
Mel Gormaneb335752009-05-13 17:34:48 +0100423 select ARCH_HAS_HOLES_MEMORYMODEL
John Stultz5cfc8ee2010-03-24 00:22:36 +0000424 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmann5725aea2011-10-31 23:11:46 +0100425 select NEED_MACH_MEMORY_H
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000426 help
427 This enables support for the Cirrus EP93xx series of CPUs.
428
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429config ARCH_FOOTBRIDGE
430 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000431 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000433 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200434 select HAVE_IDE
Rob Herringc334bc12012-03-04 22:03:33 -0600435 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400436 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000437 help
438 Support for systems based on the DC21285 companion chip
439 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Russell King788c9702009-04-26 14:21:59 +0100441config ARCH_MXC
442 bool "Freescale MXC/iMX-based"
Russell King788c9702009-04-26 14:21:59 +0100443 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100444 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100445 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100446 select CLKSRC_MMIO
Shawn Guo8b6c44f2011-06-07 13:59:14 +0800447 select GENERIC_IRQ_CHIP
Sascha Hauerffa2ea32011-09-20 14:31:24 +0200448 select MULTI_IRQ_HANDLER
Shawn Guo8842a9e2012-06-14 11:16:14 +0800449 select SPARSE_IRQ
Uwe Kleine-König3e62af82012-07-06 09:47:20 +0200450 select USE_OF
Russell King788c9702009-04-26 14:21:59 +0100451 help
452 Support for Freescale MXC/iMX-based family of processors
453
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800454config ARCH_MXS
455 bool "Freescale MXS-based"
456 select GENERIC_CLOCKEVENTS
457 select ARCH_REQUIRE_GPIOLIB
Sascha Hauerb9214b92011-01-13 16:59:25 +0100458 select CLKDEV_LOOKUP
Russell King5c61ddc2011-05-08 17:21:49 +0100459 select CLKSRC_MMIO
Shawn Guo26646812012-04-29 00:02:39 +0800460 select COMMON_CLK
Shawn Guo6abda3e2011-12-20 16:12:34 +0800461 select HAVE_CLK_PREPARE
Shawn Guoa0f5e362012-05-06 23:13:13 +0800462 select PINCTRL
Shawn Guo6c4d4ef2012-05-04 21:42:41 +0800463 select USE_OF
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800464 help
465 Support for Freescale MXS-based family of processors
466
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100467config ARCH_NETX
468 bool "Hilscher NetX based"
Russell King234b6ced2011-05-08 14:09:47 +0100469 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000470 select CPU_ARM926T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100471 select ARM_VIC
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100472 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000473 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100474 This enables support for systems based on the Hilscher NetX Soc
475
476config ARCH_H720X
477 bool "Hynix HMS720x-based"
Russell Kingc7508152008-10-26 10:55:14 +0000478 select CPU_ARM720T
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100479 select ISA_DMA_API
John Stultz5cfc8ee2010-03-24 00:22:36 +0000480 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100481 help
482 This enables support for systems based on the Hynix HMS720x
483
Russell King3b938be2007-05-12 11:25:44 +0100484config ARCH_IOP13XX
485 bool "IOP13xx-based"
486 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000487 select CPU_XSC3
Russell King3b938be2007-05-12 11:25:44 +0100488 select PLAT_IOP
489 select PCI
490 select ARCH_SUPPORTS_MSI
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +0100491 select VMSPLIT_1G
Rob Herringc334bc12012-03-04 22:03:33 -0600492 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400493 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600494 select NEED_RET_TO_USER
Russell King3b938be2007-05-12 11:25:44 +0100495 help
496 Support for Intel's IOP13XX (XScale) family of processors.
497
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100498config ARCH_IOP32X
499 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100500 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000501 select CPU_XSCALE
Rob Herringc334bc12012-03-04 22:03:33 -0600502 select NEED_MACH_IO_H
Rob Herring13a50452012-02-07 09:28:22 -0600503 select NEED_RET_TO_USER
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100504 select PLAT_IOP
Russell Kingf7e68bb2005-05-05 14:49:01 +0100505 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100506 select ARCH_REQUIRE_GPIOLIB
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000507 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100508 Support for Intel's 80219 and IOP32X (XScale) family of
509 processors.
510
511config ARCH_IOP33X
512 bool "IOP33x-based"
513 depends on MMU
Russell Kingc7508152008-10-26 10:55:14 +0000514 select CPU_XSCALE
Rob Herringc334bc12012-03-04 22:03:33 -0600515 select NEED_MACH_IO_H
Rob Herring13a50452012-02-07 09:28:22 -0600516 select NEED_RET_TO_USER
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100517 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100518 select PCI
Russell Kingbb2b1802008-07-26 15:36:03 +0100519 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100520 help
521 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522
Russell King3b938be2007-05-12 11:25:44 +0100523config ARCH_IXP4XX
524 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100525 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500526 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell King234b6ced2011-05-08 14:09:47 +0100527 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000528 select CPU_XSCALE
Richard Cochran9dde0ae2012-05-23 18:19:51 +0200529 select ARCH_REQUIRE_GPIOLIB
Russell King3b938be2007-05-12 11:25:44 +0100530 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100531 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600532 select NEED_MACH_IO_H
Russell King485bdde2008-10-17 14:00:43 +0100533 select DMABOUNCE if PCI
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100534 help
Russell King3b938be2007-05-12 11:25:44 +0100535 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100536
Saeed Bisharaedabd382009-08-06 15:12:43 +0300537config ARCH_DOVE
538 bool "Marvell Dove"
Konstantin Porotchkin7b769bb2011-04-07 13:49:41 +0300539 select CPU_V7
Saeed Bisharaedabd382009-08-06 15:12:43 +0300540 select PCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300541 select ARCH_REQUIRE_GPIOLIB
Saeed Bisharaedabd382009-08-06 15:12:43 +0300542 select GENERIC_CLOCKEVENTS
Rob Herringc334bc12012-03-04 22:03:33 -0600543 select NEED_MACH_IO_H
Saeed Bisharaedabd382009-08-06 15:12:43 +0300544 select PLAT_ORION
545 help
546 Support for the Marvell Dove SoC 88AP510
547
Saeed Bishara651c74c2008-06-22 22:45:06 +0200548config ARCH_KIRKWOOD
549 bool "Marvell Kirkwood"
Russell Kingc7508152008-10-26 10:55:14 +0000550 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200551 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700552 select ARCH_REQUIRE_GPIOLIB
Saeed Bishara651c74c2008-06-22 22:45:06 +0200553 select GENERIC_CLOCKEVENTS
Rob Herringc334bc12012-03-04 22:03:33 -0600554 select NEED_MACH_IO_H
Saeed Bishara651c74c2008-06-22 22:45:06 +0200555 select PLAT_ORION
556 help
557 Support for the following Marvell Kirkwood series SoCs:
558 88F6180, 88F6192 and 88F6281.
559
Kevin Wells40805942010-07-27 08:49:04 -0700560config ARCH_LPC32XX
561 bool "NXP LPC32XX"
Russell King234b6ced2011-05-08 14:09:47 +0100562 select CLKSRC_MMIO
Kevin Wells40805942010-07-27 08:49:04 -0700563 select CPU_ARM926T
564 select ARCH_REQUIRE_GPIOLIB
565 select HAVE_IDE
566 select ARM_AMBA
567 select USB_ARCH_HAS_OHCI
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100568 select CLKDEV_LOOKUP
Kevin Wells40805942010-07-27 08:49:04 -0700569 select GENERIC_CLOCKEVENTS
Roland Stiggef5c42272012-04-22 12:01:19 +0200570 select USE_OF
Kevin Wells40805942010-07-27 08:49:04 -0700571 help
572 Support for the NXP LPC32XX family of processors
573
Russell King788c9702009-04-26 14:21:59 +0100574config ARCH_MV78XX0
575 bool "Marvell MV78xx0"
576 select CPU_FEROCEON
577 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700578 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100579 select GENERIC_CLOCKEVENTS
Rob Herringc334bc12012-03-04 22:03:33 -0600580 select NEED_MACH_IO_H
Russell King788c9702009-04-26 14:21:59 +0100581 select PLAT_ORION
582 help
583 Support for the following Marvell MV78xx0 series SoCs:
584 MV781x0, MV782x0.
585
586config ARCH_ORION5X
587 bool "Marvell Orion"
588 depends on MMU
589 select CPU_FEROCEON
590 select PCI
Erik Benadaa8865652009-05-28 17:08:55 -0700591 select ARCH_REQUIRE_GPIOLIB
Russell King788c9702009-04-26 14:21:59 +0100592 select GENERIC_CLOCKEVENTS
593 select PLAT_ORION
594 help
595 Support for the following Marvell Orion 5x series SoCs:
596 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
597 Orion-2 (5281), Orion-1-90 (6183).
598
599config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500600 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100601 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100602 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100603 select CLKDEV_LOOKUP
Russell King788c9702009-04-26 14:21:59 +0100604 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800605 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800606 select IRQ_DOMAIN
Russell King788c9702009-04-26 14:21:59 +0100607 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400608 select SPARSE_IRQ
Leo Yan3c7241b2011-08-15 11:09:52 +0800609 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100610 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500611 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100612
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100613config ARCH_KS8695
614 bool "Micrel/Kendin KS8695"
Russell Kingc7508152008-10-26 10:55:14 +0000615 select CPU_ARM922T
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100616 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000617 select ARCH_USES_GETTIMEOFFSET
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400618 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100619 help
620 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
621 System-on-Chip devices.
622
Russell King788c9702009-04-26 14:21:59 +0100623config ARCH_W90X900
624 bool "Nuvoton W90X900 CPU"
625 select CPU_ARM926T
wanzongshunc52d3d62009-06-10 15:49:32 +0100626 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100627 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100628 select CLKSRC_MMIO
wanzongshun58b53692009-08-14 15:36:44 +0100629 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200630 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100631 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
632 At present, the w90x900 has been renamed nuc900, regarding
633 the ARM series product line, you can login the following
634 link address to know more.
635
636 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
637 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400638
Erik Gillingc5f80062010-01-21 16:53:02 -0800639config ARCH_TEGRA
640 bool "NVIDIA Tegra"
Russell King40737232011-01-06 22:32:52 +0000641 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100642 select CLKSRC_MMIO
Erik Gillingc5f80062010-01-21 16:53:02 -0800643 select GENERIC_CLOCKEVENTS
644 select GENERIC_GPIO
645 select HAVE_CLK
Dave Martin3b556582011-12-07 15:38:04 +0000646 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000647 select MIGHT_HAVE_CACHE_L2X0
Rob Herringc334bc12012-03-04 22:03:33 -0600648 select NEED_MACH_IO_H if PCI
Colin Cross7056d422010-04-22 20:30:13 -0700649 select ARCH_HAS_CPUFREQ
Erik Gillingc5f80062010-01-21 16:53:02 -0800650 help
651 This enables support for NVIDIA Tegra based systems (Tegra APX,
652 Tegra 6xx and Tegra 2 series).
653
Jamie Ilesaf756552011-07-25 17:36:42 +0100654config ARCH_PICOXCELL
655 bool "Picochip picoXcell"
656 select ARCH_REQUIRE_GPIOLIB
657 select ARM_PATCH_PHYS_VIRT
658 select ARM_VIC
659 select CPU_V6K
660 select DW_APB_TIMER
661 select GENERIC_CLOCKEVENTS
662 select GENERIC_GPIO
Jamie Ilesaf756552011-07-25 17:36:42 +0100663 select HAVE_TCM
664 select NO_IOPORT
Jamie Iles98e27a52011-12-12 20:17:37 +0000665 select SPARSE_IRQ
Jamie Ilesaf756552011-07-25 17:36:42 +0100666 select USE_OF
667 help
668 This enables support for systems based on the Picochip picoXcell
669 family of Femtocell devices. The picoxcell support requires device tree
670 for all boards.
671
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100672config ARCH_PNX4008
673 bool "Philips Nexperia PNX4008 Mobile"
Russell Kingc7508152008-10-26 10:55:14 +0000674 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100675 select CLKDEV_LOOKUP
John Stultz5cfc8ee2010-03-24 00:22:36 +0000676 select ARCH_USES_GETTIMEOFFSET
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100677 help
678 This enables support for Philips PNX4008 mobile platform.
679
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700681 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100682 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500683 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100684 select ARCH_HAS_CPUFREQ
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100685 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100686 select CLKSRC_MMIO
Michael Buesch7444a722008-07-25 01:46:11 -0700687 select ARCH_REQUIRE_GPIOLIB
Eric Miao981d0f32007-07-24 01:22:43 +0100688 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800689 select GPIO_PXA
Eric Miaobd5ce432009-01-20 12:06:01 +0800690 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800691 select SPARSE_IRQ
Eric Miao4e234cc2011-04-04 15:06:33 +0800692 select AUTO_ZRELADDR
Eric Miao8a97ae22011-05-18 21:30:04 +0800693 select MULTI_IRQ_HANDLER
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +0200694 select ARM_CPU_SUSPEND if PM
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200695 select HAVE_IDE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000696 help
eric miao2c8086a2007-09-11 19:13:17 -0700697 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
Russell King788c9702009-04-26 14:21:59 +0100699config ARCH_MSM
700 bool "Qualcomm MSM"
Steve Muckle4b536b82008-12-29 16:17:22 -0500701 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800702 select GENERIC_CLOCKEVENTS
Pavel Machek923a0812010-06-02 11:11:12 -0700703 select ARCH_REQUIRE_GPIOLIB
Stephen Boydbd323442011-02-23 09:37:42 -0800704 select CLKDEV_LOOKUP
Eric Miao49cbe782009-01-20 14:15:18 +0800705 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800706 Support for Qualcomm MSM/QSD based systems. This runs on the
707 apps processor of the MSM/QSD and depends on a shared memory
708 interface to the modem processor which runs the baseband
709 stack and controls some vital subsystems
710 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800711
Magnus Dammc793c1b2010-02-05 11:14:49 +0000712config ARCH_SHMOBILE
Paul Mundt6d72ad32010-11-16 16:10:20 +0900713 bool "Renesas SH-Mobile / R-Mobile"
714 select HAVE_CLK
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900715 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900716 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000717 select HAVE_SMP
Paul Mundt6d72ad32010-11-16 16:10:20 +0900718 select GENERIC_CLOCKEVENTS
Dave Martince5ea9f2011-11-29 15:56:19 +0000719 select MIGHT_HAVE_CACHE_L2X0
Paul Mundt6d72ad32010-11-16 16:10:20 +0900720 select NO_IOPORT
721 select SPARSE_IRQ
Magnus Damm60f14352010-12-28 08:26:52 +0000722 select MULTI_IRQ_HANDLER
Rafael J. Wysockie3e01092011-07-01 22:13:56 +0200723 select PM_GENERIC_DOMAINS if PM
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400724 select NEED_MACH_MEMORY_H
Magnus Dammc793c1b2010-02-05 11:14:49 +0000725 help
Paul Mundt6d72ad32010-11-16 16:10:20 +0900726 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000727
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728config ARCH_RPC
729 bool "RiscPC"
730 select ARCH_ACORN
731 select FIQ
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100732 select ARCH_MAY_HAVE_PC_FDC
Ben Dooks341eb782008-07-01 14:16:49 +0100733 select HAVE_PATA_PLATFORM
Russell King065909b2006-01-04 15:44:16 +0000734 select ISA_DMA_API
Al Viro5ea81762007-02-11 15:41:31 +0000735 select NO_IOPORT
Russell King07f841b2008-10-01 17:11:06 +0100736 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000737 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200738 select HAVE_IDE
Rob Herringc334bc12012-03-04 22:03:33 -0600739 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400740 select NEED_MACH_MEMORY_H
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 help
742 On the Acorn Risc-PC, Linux can support the internal IDE disk and
743 CD-ROM interface, serial and parallel port, and the floppy drive.
744
745config ARCH_SA1100
746 bool "SA1100-based"
Russell King234b6ced2011-05-08 14:09:47 +0100747 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000748 select CPU_SA1100
Russell Kingf7e68bb2005-05-05 14:49:01 +0100749 select ISA
Russell King05944d72006-11-30 20:43:51 +0000750 select ARCH_SPARSEMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500751 select ARCH_MTD_XIP
Ben Dooks89c52ed2009-07-30 23:23:24 +0100752 select ARCH_HAS_CPUFREQ
Russell King1937f5b2009-12-12 16:20:57 +0000753 select CPU_FREQ
Russell King3e238be2008-04-14 23:03:10 +0100754 select GENERIC_CLOCKEVENTS
Jett.Zhou4a8f8342011-11-30 14:32:36 +0800755 select CLKDEV_LOOKUP
Michael Buesch7444a722008-07-25 01:46:11 -0700756 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200757 select HAVE_IDE
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400758 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100759 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000760 help
761 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900763config ARCH_S3C24XX
764 bool "Samsung S3C24XX SoCs"
David Brownell0a938b92007-03-05 00:30:18 -0800765 select GENERIC_GPIO
Ben Dooks9d56c022009-07-30 23:23:25 +0100766 select ARCH_HAS_CPUFREQ
David Brownell9483a572008-07-23 21:26:48 -0700767 select HAVE_CLK
Thomas Abrahame83626f2011-06-14 19:12:26 +0900768 select CLKDEV_LOOKUP
John Stultz5cfc8ee2010-03-24 00:22:36 +0000769 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900770 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900771 select HAVE_S3C_RTC if RTC_CLASS
772 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Rob Herringc334bc12012-03-04 22:03:33 -0600773 select NEED_MACH_IO_H
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900775 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
776 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
777 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
778 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900779
Ben Dooksa08ab632008-10-21 14:06:39 +0100780config ARCH_S3C64XX
781 bool "Samsung S3C64XX"
Ben Dooks89f1fa02010-01-29 09:02:17 +0000782 select PLAT_SAMSUNG
Ben Dooks89f0ce72010-01-26 15:49:15 +0900783 select CPU_V6
Ben Dooks89f0ce72010-01-26 15:49:15 +0900784 select ARM_VIC
Ben Dooksa08ab632008-10-21 14:06:39 +0100785 select HAVE_CLK
Mark Brown67003972011-10-11 08:57:11 +0900786 select HAVE_TCM
Thomas Abraham226e85f2011-06-14 19:12:26 +0900787 select CLKDEV_LOOKUP
Ben Dooks89f0ce72010-01-26 15:49:15 +0900788 select NO_IOPORT
John Stultz5cfc8ee2010-03-24 00:22:36 +0000789 select ARCH_USES_GETTIMEOFFSET
Ben Dooks89c52ed2009-07-30 23:23:24 +0100790 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900791 select ARCH_REQUIRE_GPIOLIB
792 select SAMSUNG_CLKSRC
793 select SAMSUNG_IRQ_VIC_TIMER
Ben Dooks89f0ce72010-01-26 15:49:15 +0900794 select S3C_GPIO_TRACK
Ben Dooks89f0ce72010-01-26 15:49:15 +0900795 select S3C_DEV_NAND
796 select USB_ARCH_HAS_OHCI
797 select SAMSUNG_GPIOLIB_4BIT
Kukjin Kim20676c12010-11-13 16:08:32 +0900798 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900799 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Ben Dooksa08ab632008-10-21 14:06:39 +0100800 help
801 Samsung S3C64XX series based systems
802
Kukjin Kim49b7a492010-09-07 15:47:18 +0900803config ARCH_S5P64X0
804 bool "Samsung S5P6440 S5P6450"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900805 select CPU_V6
806 select GENERIC_GPIO
807 select HAVE_CLK
Thomas Abrahamd8b22d22011-06-14 19:12:27 +0900808 select CLKDEV_LOOKUP
Chanwoo Choi0665ccc2011-07-18 15:07:14 +0900809 select CLKSRC_MMIO
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900810 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900811 select GENERIC_CLOCKEVENTS
Kukjin Kim20676c12010-11-13 16:08:32 +0900812 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900813 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900814 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900815 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
816 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900817
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200818config ARCH_S5PC100
819 bool "Samsung S5PC100"
Byungho Min5a7652f2009-06-23 21:39:42 +0900820 select GENERIC_GPIO
821 select HAVE_CLK
Thomas Abraham29e8eb02011-06-14 19:12:27 +0900822 select CLKDEV_LOOKUP
Byungho Min5a7652f2009-06-23 21:39:42 +0900823 select CPU_V7
Ben Dooks925c68c2010-05-20 20:48:28 +0900824 select ARCH_USES_GETTIMEOFFSET
Kukjin Kim20676c12010-11-13 16:08:32 +0900825 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900826 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900827 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Byungho Min5a7652f2009-06-23 21:39:42 +0900828 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200829 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900830
Kukjin Kim170f4e42010-02-24 16:40:44 +0900831config ARCH_S5PV210
832 bool "Samsung S5PV210/S5PC110"
833 select CPU_V7
Kyungmin Parkeecb6a82010-09-29 21:29:27 +0900834 select ARCH_SPARSEMEM_ENABLE
Kamil Debski0f75a962011-07-21 16:42:30 +0900835 select ARCH_HAS_HOLES_MEMORYMODEL
Kukjin Kim170f4e42010-02-24 16:40:44 +0900836 select GENERIC_GPIO
837 select HAVE_CLK
Thomas Abrahamb2a9dd42011-06-14 19:12:27 +0900838 select CLKDEV_LOOKUP
Chanwoo Choi0665ccc2011-07-18 15:07:14 +0900839 select CLKSRC_MMIO
Jaecheol Leed8144ae2010-10-12 09:23:19 +0900840 select ARCH_HAS_CPUFREQ
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900841 select GENERIC_CLOCKEVENTS
Kukjin Kim20676c12010-11-13 16:08:32 +0900842 select HAVE_S3C2410_I2C if I2C
Kukjin Kim754961a2010-11-13 16:11:46 +0900843 select HAVE_S3C_RTC if RTC_CLASS
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900844 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400845 select NEED_MACH_MEMORY_H
Kukjin Kim170f4e42010-02-24 16:40:44 +0900846 help
847 Samsung S5PV210/S5PC110 series based systems
848
Kukjin Kim83014572011-11-06 13:54:56 +0900849config ARCH_EXYNOS
850 bool "SAMSUNG EXYNOS"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900851 select CPU_V7
Kyungmin Parkf567fa62010-09-29 21:33:29 +0900852 select ARCH_SPARSEMEM_ENABLE
Kamil Debski0f75a962011-07-21 16:42:30 +0900853 select ARCH_HAS_HOLES_MEMORYMODEL
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900854 select GENERIC_GPIO
855 select HAVE_CLK
Thomas Abrahambadc4f22011-06-14 19:12:27 +0900856 select CLKDEV_LOOKUP
Sunyoung Kangb333fb12010-09-16 11:11:45 +0900857 select ARCH_HAS_CPUFREQ
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900858 select GENERIC_CLOCKEVENTS
Kukjin Kim754961a2010-11-13 16:11:46 +0900859 select HAVE_S3C_RTC if RTC_CLASS
Kukjin Kim20676c12010-11-13 16:08:32 +0900860 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900861 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400862 select NEED_MACH_MEMORY_H
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900863 help
Kukjin Kim83014572011-11-06 13:54:56 +0900864 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900865
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866config ARCH_SHARK
867 bool "Shark"
Russell Kingc7508152008-10-26 10:55:14 +0000868 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100869 select ISA
870 select ISA_DMA
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100871 select ZONE_DMA
Russell Kingf7e68bb2005-05-05 14:49:01 +0100872 select PCI
John Stultz5cfc8ee2010-03-24 00:22:36 +0000873 select ARCH_USES_GETTIMEOFFSET
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400874 select NEED_MACH_MEMORY_H
Rob Herringc334bc12012-03-04 22:03:33 -0600875 select NEED_MACH_IO_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000876 help
877 Support for the StrongARM based Digital DNARD machine, also known
878 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879
Linus Walleijd98aac72009-04-27 10:21:46 +0100880config ARCH_U300
881 bool "ST-Ericsson U300 Series"
882 depends on MMU
Russell King234b6ced2011-05-08 14:09:47 +0100883 select CLKSRC_MMIO
Linus Walleijd98aac72009-04-27 10:21:46 +0100884 select CPU_ARM926T
Linus Walleijbc581772009-09-15 17:30:37 +0100885 select HAVE_TCM
Linus Walleijd98aac72009-04-27 10:21:46 +0100886 select ARM_AMBA
Linus Walleij5485c1e2011-08-09 21:18:20 +0200887 select ARM_PATCH_PHYS_VIRT
Linus Walleijd98aac72009-04-27 10:21:46 +0100888 select ARM_VIC
Linus Walleijd98aac72009-04-27 10:21:46 +0100889 select GENERIC_CLOCKEVENTS
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100890 select CLKDEV_LOOKUP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900891 select HAVE_MACH_CLKDEV
Linus Walleijd98aac72009-04-27 10:21:46 +0100892 select GENERIC_GPIO
Linus Walleijcc890cd2011-09-08 09:04:51 +0100893 select ARCH_REQUIRE_GPIOLIB
Linus Walleijd98aac72009-04-27 10:21:46 +0100894 help
895 Support for ST-Ericsson U300 series mobile platforms.
896
Russell Kingccf50e22010-03-15 19:03:06 +0000897config ARCH_U8500
898 bool "ST-Ericsson U8500 Series"
Arnd Bergmann67ae14f2012-02-25 12:48:49 -0700899 depends on MMU
Russell Kingccf50e22010-03-15 19:03:06 +0000900 select CPU_V7
901 select ARM_AMBA
Russell Kingccf50e22010-03-15 19:03:06 +0000902 select GENERIC_CLOCKEVENTS
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100903 select CLKDEV_LOOKUP
Rabin Vincent94bdc0e2010-03-03 04:54:37 +0100904 select ARCH_REQUIRE_GPIOLIB
Martin Persson7c1a70e2010-12-08 15:13:42 +0100905 select ARCH_HAS_CPUFREQ
Dave Martin3b556582011-12-07 15:38:04 +0000906 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000907 select MIGHT_HAVE_CACHE_L2X0
Russell Kingccf50e22010-03-15 19:03:06 +0000908 help
909 Support for ST-Ericsson's Ux500 architecture
910
911config ARCH_NOMADIK
912 bool "STMicroelectronics Nomadik"
913 select ARM_AMBA
914 select ARM_VIC
915 select CPU_ARM926T
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100916 select CLKDEV_LOOKUP
Russell Kingccf50e22010-03-15 19:03:06 +0000917 select GENERIC_CLOCKEVENTS
Arnd Bergmann0fa7be42012-05-15 11:24:34 +0000918 select PINCTRL
Dave Martince5ea9f2011-11-29 15:56:19 +0000919 select MIGHT_HAVE_CACHE_L2X0
Russell Kingccf50e22010-03-15 19:03:06 +0000920 select ARCH_REQUIRE_GPIOLIB
921 help
922 Support for the Nomadik platform by ST-Ericsson
923
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100924config ARCH_DAVINCI
925 bool "TI DaVinci"
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100926 select GENERIC_CLOCKEVENTS
David Brownelldce11152008-09-07 23:41:04 -0700927 select ARCH_REQUIRE_GPIOLIB
Nicolas Pitre3bca1032008-10-07 20:14:55 +0100928 select ZONE_DMA
Kevin Hilman9232fcc2009-04-08 14:49:38 -0700929 select HAVE_IDE
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100930 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700931 select GENERIC_ALLOCATOR
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100932 select GENERIC_IRQ_CHIP
Sekhar Noriae88e052009-11-19 15:34:01 +0530933 select ARCH_HAS_HOLES_MEMORYMODEL
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100934 help
935 Support for TI's DaVinci platform.
936
Russell King3b938be2007-05-12 11:25:44 +0100937config ARCH_OMAP
938 bool "TI OMAP"
David Brownell9483a572008-07-23 21:26:48 -0700939 select HAVE_CLK
Michael Buesch7444a722008-07-25 01:46:11 -0700940 select ARCH_REQUIRE_GPIOLIB
Ben Dooks89c52ed2009-07-30 23:23:24 +0100941 select ARCH_HAS_CPUFREQ
Russell King - ARM Linux354a1832011-07-10 23:05:34 -0700942 select CLKSRC_MMIO
Kevin Hilman06cad092007-10-18 23:04:43 -0700943 select GENERIC_CLOCKEVENTS
Sriram9af915d2010-01-29 14:20:05 -0800944 select ARCH_HAS_HOLES_MEMORYMODEL
Russell King3b938be2007-05-12 11:25:44 +0100945 help
Lennert Buytenhek6e457bb2010-09-22 20:40:57 +0200946 Support for TI's OMAP platform (OMAP1/2/3/4).
Russell King3b938be2007-05-12 11:25:44 +0100947
viresh kumarcee37e52010-04-01 12:31:05 +0100948config PLAT_SPEAR
949 bool "ST SPEAr"
950 select ARM_AMBA
951 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100952 select CLKDEV_LOOKUP
Viresh Kumar5df33a62012-04-10 09:02:35 +0530953 select COMMON_CLK
Russell Kingd6e15d72011-05-08 17:10:14 +0100954 select CLKSRC_MMIO
viresh kumarcee37e52010-04-01 12:31:05 +0100955 select GENERIC_CLOCKEVENTS
viresh kumarcee37e52010-04-01 12:31:05 +0100956 select HAVE_CLK
957 help
958 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
959
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100960config ARCH_VT8500
961 bool "VIA/WonderMedia 85xx"
962 select CPU_ARM926T
963 select GENERIC_GPIO
964 select ARCH_HAS_CPUFREQ
965 select GENERIC_CLOCKEVENTS
966 select ARCH_REQUIRE_GPIOLIB
967 select HAVE_PWM
968 help
969 Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
Binghua Duan02c981c2011-07-08 17:40:12 +0800970
John Linnb85a3ef2011-06-20 11:47:27 -0600971config ARCH_ZYNQ
972 bool "Xilinx Zynq ARM Cortex A9 Platform"
Binghua Duan02c981c2011-07-08 17:40:12 +0800973 select CPU_V7
Binghua Duan02c981c2011-07-08 17:40:12 +0800974 select GENERIC_CLOCKEVENTS
975 select CLKDEV_LOOKUP
John Linnb85a3ef2011-06-20 11:47:27 -0600976 select ARM_GIC
977 select ARM_AMBA
978 select ICST
Dave Martince5ea9f2011-11-29 15:56:19 +0000979 select MIGHT_HAVE_CACHE_L2X0
Binghua Duan02c981c2011-07-08 17:40:12 +0800980 select USE_OF
Binghua Duan02c981c2011-07-08 17:40:12 +0800981 help
John Linnb85a3ef2011-06-20 11:47:27 -0600982 Support for Xilinx Zynq ARM Cortex A9 Platform
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983endchoice
984
Russell Kingccf50e22010-03-15 19:03:06 +0000985#
986# This is sorted alphabetically by mach-* pathname. However, plat-*
987# Kconfigs may be included either alphabetically (according to the
988# plat- suffix) or along side the corresponding mach-* source.
989#
Russell King95b8f202010-01-14 11:43:54 +0000990source "arch/arm/mach-at91/Kconfig"
991
992source "arch/arm/mach-bcmring/Kconfig"
993
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994source "arch/arm/mach-clps711x/Kconfig"
995
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300996source "arch/arm/mach-cns3xxx/Kconfig"
997
Russell King95b8f202010-01-14 11:43:54 +0000998source "arch/arm/mach-davinci/Kconfig"
999
1000source "arch/arm/mach-dove/Kconfig"
1001
Lennert Buytenheke7736d42006-03-20 17:10:13 +00001002source "arch/arm/mach-ep93xx/Kconfig"
1003
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004source "arch/arm/mach-footbridge/Kconfig"
1005
Paulius Zaleckas59d3a192009-03-26 10:06:08 +02001006source "arch/arm/mach-gemini/Kconfig"
1007
Russell King95b8f202010-01-14 11:43:54 +00001008source "arch/arm/mach-h720x/Kconfig"
1009
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010source "arch/arm/mach-integrator/Kconfig"
1011
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +01001012source "arch/arm/mach-iop32x/Kconfig"
1013
1014source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015
Dan Williams285f5fa2006-12-07 02:59:39 +01001016source "arch/arm/mach-iop13xx/Kconfig"
1017
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018source "arch/arm/mach-ixp4xx/Kconfig"
1019
Russell King95b8f202010-01-14 11:43:54 +00001020source "arch/arm/mach-kirkwood/Kconfig"
1021
1022source "arch/arm/mach-ks8695/Kconfig"
1023
Kevin Wells40805942010-07-27 08:49:04 -07001024source "arch/arm/mach-lpc32xx/Kconfig"
1025
Russell King95b8f202010-01-14 11:43:54 +00001026source "arch/arm/mach-msm/Kconfig"
1027
Stanislav Samsonov794d15b2008-06-22 22:45:10 +02001028source "arch/arm/mach-mv78xx0/Kconfig"
1029
Russell King95b8f202010-01-14 11:43:54 +00001030source "arch/arm/plat-mxc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031
Shawn Guo1d3f33d2010-12-13 20:55:03 +08001032source "arch/arm/mach-mxs/Kconfig"
1033
Russell King95b8f202010-01-14 11:43:54 +00001034source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +08001035
Russell King95b8f202010-01-14 11:43:54 +00001036source "arch/arm/mach-nomadik/Kconfig"
1037source "arch/arm/plat-nomadik/Kconfig"
1038
Tony Lindgrend48af152005-07-10 19:58:17 +01001039source "arch/arm/plat-omap/Kconfig"
1040
1041source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042
Tony Lindgren1dbae812005-11-10 14:26:51 +00001043source "arch/arm/mach-omap2/Kconfig"
1044
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -04001045source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -04001046
Russell King95b8f202010-01-14 11:43:54 +00001047source "arch/arm/mach-pxa/Kconfig"
1048source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049
Russell King95b8f202010-01-14 11:43:54 +00001050source "arch/arm/mach-mmp/Kconfig"
1051
1052source "arch/arm/mach-realview/Kconfig"
1053
1054source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +03001055
Ben Dookscf383672009-11-10 00:14:58 +00001056source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +01001057source "arch/arm/plat-s3c24xx/Kconfig"
1058
viresh kumarcee37e52010-04-01 12:31:05 +01001059source "arch/arm/plat-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +01001060
Kukjin Kim85fd6d62012-02-06 09:38:19 +09001061source "arch/arm/mach-s3c24xx/Kconfig"
Kukjin Kimb130d5c2012-02-03 14:29:23 +09001062if ARCH_S3C24XX
Ben Dooksa21765a2007-02-11 18:31:01 +01001063source "arch/arm/mach-s3c2412/Kconfig"
1064source "arch/arm/mach-s3c2440/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +01001065endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066
Ben Dooksa08ab632008-10-21 14:06:39 +01001067if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +09001068source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +01001069endif
1070
Kukjin Kim49b7a492010-09-07 15:47:18 +09001071source "arch/arm/mach-s5p64x0/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +09001072
Byungho Min5a7652f2009-06-23 21:39:42 +09001073source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +09001074
Kukjin Kim170f4e42010-02-24 16:40:44 +09001075source "arch/arm/mach-s5pv210/Kconfig"
1076
Kukjin Kim83014572011-11-06 13:54:56 +09001077source "arch/arm/mach-exynos/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +09001078
Russell King882d01f2010-03-02 23:40:15 +00001079source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080
Erik Gillingc5f80062010-01-21 16:53:02 -08001081source "arch/arm/mach-tegra/Kconfig"
1082
Russell King95b8f202010-01-14 11:43:54 +00001083source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084
Russell King95b8f202010-01-14 11:43:54 +00001085source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086
1087source "arch/arm/mach-versatile/Kconfig"
1088
Russell Kingceade892010-02-11 21:44:53 +00001089source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +00001090source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +00001091
Alexey Charkov21f47fb2010-12-23 13:11:21 +01001092source "arch/arm/mach-vt8500/Kconfig"
1093
wanzongshun7ec80dd2008-12-03 03:55:38 +01001094source "arch/arm/mach-w90x900/Kconfig"
1095
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096# Definitions to make life easier
1097config ARCH_ACORN
1098 bool
1099
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001100config PLAT_IOP
1101 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -07001102 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001103
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001104config PLAT_ORION
1105 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001106 select CLKSRC_MMIO
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001107 select GENERIC_IRQ_CHIP
Andrew Lunn2f129bf2011-12-15 08:15:07 +01001108 select COMMON_CLK
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001109
Eric Miaobd5ce432009-01-20 12:06:01 +08001110config PLAT_PXA
1111 bool
1112
Russell Kingf4b8b312010-01-14 12:48:06 +00001113config PLAT_VERSATILE
1114 bool
1115
Russell Kinge3887712010-01-14 13:30:16 +00001116config ARM_TIMER_SP804
1117 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001118 select CLKSRC_MMIO
Rob Herringa7bf6162011-12-12 15:29:08 -06001119 select HAVE_SCHED_CLOCK
Russell Kinge3887712010-01-14 13:30:16 +00001120
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121source arch/arm/mm/Kconfig
1122
Russell King958cab02011-12-11 10:04:00 +00001123config ARM_NR_BANKS
1124 int
1125 default 16 if ARCH_EP93XX
1126 default 8
1127
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001128config IWMMXT
1129 bool "Enable iWMMXt support"
Haojian Zhuangef6c8442010-11-24 11:54:25 +08001130 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1131 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001132 help
1133 Enable support for iWMMXt context switching at run time if
1134 running on a CPU that supports it.
1135
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136config XSCALE_PMU
1137 bool
Paul Bollebfc994b2011-10-30 12:51:41 +01001138 depends on CPU_XSCALE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139 default y
1140
Jamie Iles0f4f0672010-02-02 20:23:15 +01001141config CPU_HAS_PMU
Russell Kinge399b1a2011-01-17 15:08:32 +00001142 depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
Will Deacon8954bb02010-06-21 15:32:54 +01001143 (!ARCH_OMAP3 || OMAP3_EMU)
Jamie Iles0f4f0672010-02-02 20:23:15 +01001144 default y
1145 bool
1146
eric miao52108642010-12-13 09:42:34 +01001147config MULTI_IRQ_HANDLER
1148 bool
1149 help
1150 Allow each machine to specify it's own IRQ handler at run time.
1151
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001152if !MMU
1153source "arch/arm/Kconfig-nommu"
1154endif
1155
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001156config ARM_ERRATA_326103
1157 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1158 depends on CPU_V6
1159 help
1160 Executing a SWP instruction to read-only memory does not set bit 11
1161 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1162 treat the access as a read, preventing a COW from occurring and
1163 causing the faulting task to livelock.
1164
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001165config ARM_ERRATA_411920
1166 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001167 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001168 help
1169 Invalidation of the Instruction Cache operation can
1170 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1171 It does not affect the MPCore. This option enables the ARM Ltd.
1172 recommended workaround.
1173
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001174config ARM_ERRATA_430973
1175 bool "ARM errata: Stale prediction on replaced interworking branch"
1176 depends on CPU_V7
1177 help
1178 This option enables the workaround for the 430973 Cortex-A8
1179 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1180 interworking branch is replaced with another code sequence at the
1181 same virtual address, whether due to self-modifying code or virtual
1182 to physical address re-mapping, Cortex-A8 does not recover from the
1183 stale interworking branch prediction. This results in Cortex-A8
1184 executing the new code sequence in the incorrect ARM or Thumb state.
1185 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1186 and also flushes the branch target cache at every context switch.
1187 Note that setting specific bits in the ACTLR register may not be
1188 available in non-secure mode.
1189
Catalin Marinas855c5512009-04-30 17:06:15 +01001190config ARM_ERRATA_458693
1191 bool "ARM errata: Processor deadlock when a false hazard is created"
1192 depends on CPU_V7
1193 help
1194 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1195 erratum. For very specific sequences of memory operations, it is
1196 possible for a hazard condition intended for a cache line to instead
1197 be incorrectly associated with a different cache line. This false
1198 hazard might then cause a processor deadlock. The workaround enables
1199 the L1 caching of the NEON accesses and disables the PLD instruction
1200 in the ACTLR register. Note that setting specific bits in the ACTLR
1201 register may not be available in non-secure mode.
1202
Catalin Marinas0516e462009-04-30 17:06:20 +01001203config ARM_ERRATA_460075
1204 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1205 depends on CPU_V7
1206 help
1207 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1208 erratum. Any asynchronous access to the L2 cache may encounter a
1209 situation in which recent store transactions to the L2 cache are lost
1210 and overwritten with stale memory contents from external memory. The
1211 workaround disables the write-allocate mode for the L2 cache via the
1212 ACTLR register. Note that setting specific bits in the ACTLR register
1213 may not be available in non-secure mode.
1214
Will Deacon9f050272010-09-14 09:51:43 +01001215config ARM_ERRATA_742230
1216 bool "ARM errata: DMB operation may be faulty"
1217 depends on CPU_V7 && SMP
1218 help
1219 This option enables the workaround for the 742230 Cortex-A9
1220 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1221 between two write operations may not ensure the correct visibility
1222 ordering of the two writes. This workaround sets a specific bit in
1223 the diagnostic register of the Cortex-A9 which causes the DMB
1224 instruction to behave as a DSB, ensuring the correct behaviour of
1225 the two writes.
1226
Will Deacona672e992010-09-14 09:53:02 +01001227config ARM_ERRATA_742231
1228 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1229 depends on CPU_V7 && SMP
1230 help
1231 This option enables the workaround for the 742231 Cortex-A9
1232 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1233 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1234 accessing some data located in the same cache line, may get corrupted
1235 data due to bad handling of the address hazard when the line gets
1236 replaced from one of the CPUs at the same time as another CPU is
1237 accessing it. This workaround sets specific bits in the diagnostic
1238 register of the Cortex-A9 which reduces the linefill issuing
1239 capabilities of the processor.
1240
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001241config PL310_ERRATA_588369
Will Deaconfa0ce402011-11-14 17:24:57 +01001242 bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001243 depends on CACHE_L2X0
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001244 help
1245 The PL310 L2 cache controller implements three types of Clean &
1246 Invalidate maintenance operations: by Physical Address
1247 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1248 They are architecturally defined to behave as the execution of a
1249 clean operation followed immediately by an invalidate operation,
1250 both performing to the same memory location. This functionality
1251 is not correctly implemented in PL310 as clean lines are not
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001252 invalidated as a result of these operations.
Will Deaconcdf357f2010-08-05 11:20:51 +01001253
1254config ARM_ERRATA_720789
1255 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001256 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001257 help
1258 This option enables the workaround for the 720789 Cortex-A9 (prior to
1259 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1260 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1261 As a consequence of this erratum, some TLB entries which should be
1262 invalidated are not, resulting in an incoherency in the system page
1263 tables. The workaround changes the TLB flushing routines to invalidate
1264 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001265
Russell King1f0090a2011-03-16 23:35:25 +00001266config PL310_ERRATA_727915
Will Deaconfa0ce402011-11-14 17:24:57 +01001267 bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
Russell King1f0090a2011-03-16 23:35:25 +00001268 depends on CACHE_L2X0
1269 help
1270 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1271 operation (offset 0x7FC). This operation runs in background so that
1272 PL310 can handle normal accesses while it is in progress. Under very
1273 rare circumstances, due to this erratum, write data can be lost when
1274 PL310 treats a cacheable write transaction during a Clean &
1275 Invalidate by Way operation.
1276
Will Deacon475d92f2010-09-28 14:02:02 +01001277config ARM_ERRATA_743622
1278 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1279 depends on CPU_V7
1280 help
1281 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001282 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001283 optimisation in the Cortex-A9 Store Buffer may lead to data
1284 corruption. This workaround sets a specific bit in the diagnostic
1285 register of the Cortex-A9 which disables the Store Buffer
1286 optimisation, preventing the defect from occurring. This has no
1287 visible impact on the overall performance or power consumption of the
1288 processor.
1289
Will Deacon9a27c272011-02-18 16:36:35 +01001290config ARM_ERRATA_751472
1291 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001292 depends on CPU_V7
Will Deacon9a27c272011-02-18 16:36:35 +01001293 help
1294 This option enables the workaround for the 751472 Cortex-A9 (prior
1295 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1296 completion of a following broadcasted operation if the second
1297 operation is received by a CPU before the ICIALLUIS has completed,
1298 potentially leading to corrupted entries in the cache or TLB.
1299
Will Deaconfa0ce402011-11-14 17:24:57 +01001300config PL310_ERRATA_753970
1301 bool "PL310 errata: cache sync operation may be faulty"
Srinidhi Kasagar885028e2011-02-17 07:03:51 +01001302 depends on CACHE_PL310
1303 help
1304 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1305
1306 Under some condition the effect of cache sync operation on
1307 the store buffer still remains when the operation completes.
1308 This means that the store buffer is always asked to drain and
1309 this prevents it from merging any further writes. The workaround
1310 is to replace the normal offset of cache sync operation (0x730)
1311 by another offset targeting an unmapped PL310 register 0x740.
1312 This has the same effect as the cache sync operation: store buffer
1313 drain and waiting for all buffers empty.
1314
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001315config ARM_ERRATA_754322
1316 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1317 depends on CPU_V7
1318 help
1319 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1320 r3p*) erratum. A speculative memory access may cause a page table walk
1321 which starts prior to an ASID switch but completes afterwards. This
1322 can populate the micro-TLB with a stale entry which may be hit with
1323 the new ASID. This workaround places two dsb instructions in the mm
1324 switching code so that no page table walks can cross the ASID switch.
1325
Will Deacon5dab26af2011-03-04 12:38:54 +01001326config ARM_ERRATA_754327
1327 bool "ARM errata: no automatic Store Buffer drain"
1328 depends on CPU_V7 && SMP
1329 help
1330 This option enables the workaround for the 754327 Cortex-A9 (prior to
1331 r2p0) erratum. The Store Buffer does not have any automatic draining
1332 mechanism and therefore a livelock may occur if an external agent
1333 continuously polls a memory location waiting to observe an update.
1334 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1335 written polling loops from denying visibility of updates to memory.
1336
Catalin Marinas145e10e2011-08-15 11:04:41 +01001337config ARM_ERRATA_364296
1338 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1339 depends on CPU_V6 && !SMP
1340 help
1341 This options enables the workaround for the 364296 ARM1136
1342 r0p2 erratum (possible cache data corruption with
1343 hit-under-miss enabled). It sets the undocumented bit 31 in
1344 the auxiliary control register and the FI bit in the control
1345 register, thus disabling hit-under-miss without putting the
1346 processor into full low interrupt latency mode. ARM11MPCore
1347 is not affected.
1348
Will Deaconf630c1b2011-09-15 11:45:15 +01001349config ARM_ERRATA_764369
1350 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1351 depends on CPU_V7 && SMP
1352 help
1353 This option enables the workaround for erratum 764369
1354 affecting Cortex-A9 MPCore with two or more processors (all
1355 current revisions). Under certain timing circumstances, a data
1356 cache line maintenance operation by MVA targeting an Inner
1357 Shareable memory region may fail to proceed up to either the
1358 Point of Coherency or to the Point of Unification of the
1359 system. This workaround adds a DSB instruction before the
1360 relevant cache maintenance functions and sets a specific bit
1361 in the diagnostic control register of the SCU.
1362
Will Deacon11ed0ba2011-11-14 17:24:58 +01001363config PL310_ERRATA_769419
1364 bool "PL310 errata: no automatic Store Buffer drain"
1365 depends on CACHE_L2X0
1366 help
1367 On revisions of the PL310 prior to r3p2, the Store Buffer does
1368 not automatically drain. This can cause normal, non-cacheable
1369 writes to be retained when the memory system is idle, leading
1370 to suboptimal I/O performance for drivers using coherent DMA.
1371 This option adds a write barrier to the cpu_idle loop so that,
1372 on systems with an outer cache, the store buffer is drained
1373 explicitly.
1374
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375endmenu
1376
1377source "arch/arm/common/Kconfig"
1378
Linus Torvalds1da177e2005-04-16 15:20:36 -07001379menu "Bus support"
1380
1381config ARM_AMBA
1382 bool
1383
1384config ISA
1385 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386 help
1387 Find out whether you have ISA slots on your motherboard. ISA is the
1388 name of a bus system, i.e. the way the CPU talks to the other stuff
1389 inside your box. Other bus systems are PCI, EISA, MicroChannel
1390 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1391 newer boards don't support it. If you have ISA, say Y, otherwise N.
1392
Russell King065909b2006-01-04 15:44:16 +00001393# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001394config ISA_DMA
1395 bool
Russell King065909b2006-01-04 15:44:16 +00001396 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397
Russell King065909b2006-01-04 15:44:16 +00001398# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001399config ISA_DMA_API
1400 bool
Al Viro5cae8412005-05-04 05:39:22 +01001401
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001403 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001404 help
1405 Find out whether you have a PCI motherboard. PCI is the name of a
1406 bus system, i.e. the way the CPU talks to the other stuff inside
1407 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1408 VESA. If you have PCI, say Y, otherwise N.
1409
Anton Vorontsov52882172010-04-19 13:20:49 +01001410config PCI_DOMAINS
1411 bool
1412 depends on PCI
1413
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001414config PCI_NANOENGINE
1415 bool "BSE nanoEngine PCI support"
1416 depends on SA1100_NANOENGINE
1417 help
1418 Enable PCI on the BSE nanoEngine board.
1419
Matthew Wilcox36e23592007-07-10 10:54:40 -06001420config PCI_SYSCALL
1421 def_bool PCI
1422
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423# Select the host bridge type
1424config PCI_HOST_VIA82C505
1425 bool
1426 depends on PCI && ARCH_SHARK
1427 default y
1428
Mike Rapoporta0113a92007-11-25 08:55:34 +01001429config PCI_HOST_ITE8152
1430 bool
1431 depends on PCI && MACH_ARMCORE
1432 default y
1433 select DMABOUNCE
1434
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435source "drivers/pci/Kconfig"
1436
1437source "drivers/pcmcia/Kconfig"
1438
1439endmenu
1440
1441menu "Kernel Features"
1442
Dave Martin3b556582011-12-07 15:38:04 +00001443config HAVE_SMP
1444 bool
1445 help
1446 This option should be selected by machines which have an SMP-
1447 capable CPU.
1448
1449 The only effect of this option is to make the SMP-related
1450 options available to the user for configuration.
1451
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001453 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001454 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001455 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001456 depends on HAVE_SMP
Arnd Bergmann9934ebb2011-06-10 14:05:22 +00001457 depends on MMU
Jens Axboef6dd9fa2008-06-10 20:48:30 +02001458 select USE_GENERIC_SMP_HELPERS
Daniel Walker89c3ded2010-11-22 12:35:41 -08001459 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460 help
1461 This enables support for systems with more than one CPU. If you have
1462 a system with only one CPU, like most personal computers, say N. If
1463 you have a system with more than one CPU, say Y.
1464
1465 If you say N here, the kernel will run on single and multiprocessor
1466 machines, but will use only one CPU of a multiprocessor machine. If
1467 you say Y here, the kernel will run on many, but not all, single
1468 processor machines. On a single processor machine, the kernel will
1469 run faster if you say N here.
1470
Paul Bolle395cf962011-08-15 02:02:26 +02001471 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001473 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001474
1475 If you don't know what to do here, say N.
1476
Russell Kingf00ec482010-09-04 10:47:48 +01001477config SMP_ON_UP
1478 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1479 depends on EXPERIMENTAL
Nicolas Pitre4d2692a2011-01-14 07:33:24 +01001480 depends on SMP && !XIP_KERNEL
Russell Kingf00ec482010-09-04 10:47:48 +01001481 default y
1482 help
1483 SMP kernels contain instructions which fail on non-SMP processors.
1484 Enabling this option allows the kernel to modify itself to make
1485 these instructions safe. Disabling it allows about 1K of space
1486 savings.
1487
1488 If you don't know what to do here, say Y.
1489
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001490config ARM_CPU_TOPOLOGY
1491 bool "Support cpu topology definition"
1492 depends on SMP && CPU_V7
1493 default y
1494 help
1495 Support ARM cpu topology definition. The MPIDR register defines
1496 affinity between processors which is then used to describe the cpu
1497 topology of an ARM System.
1498
1499config SCHED_MC
1500 bool "Multi-core scheduler support"
1501 depends on ARM_CPU_TOPOLOGY
1502 help
1503 Multi-core scheduler support improves the CPU scheduler's decision
1504 making when dealing with multi-core CPU chips at a cost of slightly
1505 increased overhead in some places. If unsure say N here.
1506
1507config SCHED_SMT
1508 bool "SMT scheduler support"
1509 depends on ARM_CPU_TOPOLOGY
1510 help
1511 Improves the CPU scheduler's decision making when dealing with
1512 MultiThreading at a cost of slightly increased overhead in some
1513 places. If unsure say N here.
1514
Russell Kinga8cbcd92009-05-16 11:51:14 +01001515config HAVE_ARM_SCU
1516 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001517 help
1518 This option enables support for the ARM system coherency unit
1519
Marc Zyngier022c03a2012-01-11 17:25:17 +00001520config ARM_ARCH_TIMER
1521 bool "Architected timer support"
1522 depends on CPU_V7
1523 help
1524 This option enables support for the ARM architected timer
1525
Russell Kingf32f4ce2009-05-16 12:14:21 +01001526config HAVE_ARM_TWD
1527 bool
1528 depends on SMP
1529 help
1530 This options enables support for the ARM timer and watchdog unit
1531
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001532choice
1533 prompt "Memory split"
1534 default VMSPLIT_3G
1535 help
1536 Select the desired split between kernel and user memory.
1537
1538 If you are not absolutely sure what you are doing, leave this
1539 option alone!
1540
1541 config VMSPLIT_3G
1542 bool "3G/1G user/kernel split"
1543 config VMSPLIT_2G
1544 bool "2G/2G user/kernel split"
1545 config VMSPLIT_1G
1546 bool "1G/3G user/kernel split"
1547endchoice
1548
1549config PAGE_OFFSET
1550 hex
1551 default 0x40000000 if VMSPLIT_1G
1552 default 0x80000000 if VMSPLIT_2G
1553 default 0xC0000000
1554
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555config NR_CPUS
1556 int "Maximum number of CPUs (2-32)"
1557 range 2 32
1558 depends on SMP
1559 default "4"
1560
Russell Kinga054a812005-11-02 22:24:33 +00001561config HOTPLUG_CPU
1562 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1563 depends on SMP && HOTPLUG && EXPERIMENTAL
1564 help
1565 Say Y here to experiment with turning CPUs off and on. CPUs
1566 can be controlled through /sys/devices/system/cpu.
1567
Russell King37ee16a2005-11-08 19:08:05 +00001568config LOCAL_TIMERS
1569 bool "Use local timer interrupts"
Russell King971acb92010-09-04 08:16:30 +01001570 depends on SMP
Russell King37ee16a2005-11-08 19:08:05 +00001571 default y
Changhwan Youn30d8bea2011-03-11 10:39:57 +09001572 select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
Russell King37ee16a2005-11-08 19:08:05 +00001573 help
1574 Enable support for local timers on SMP platforms, rather then the
1575 legacy IPI broadcast method. Local timers allows the system
1576 accounting to be spread across the timer interval, preventing a
1577 "thundering herd" at every timer tick.
1578
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001579config ARCH_NR_GPIO
1580 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001581 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Philippe Langlais70227a42012-02-13 10:51:22 +01001582 default 355 if ARCH_U8500
Paul Parsons9a01ec32012-02-27 01:58:45 +00001583 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001584 default 0
1585 help
1586 Maximum number of GPIOs in the system.
1587
1588 If unsure, leave the default value.
1589
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001590source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591
Russell Kingf8065812006-03-02 22:41:59 +00001592config HZ
1593 int
Kukjin Kimb130d5c2012-02-03 14:29:23 +09001594 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001595 ARCH_S5PV210 || ARCH_EXYNOS4
Russell Kingbfe65702006-03-04 11:01:53 +00001596 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
David Brownell5248c652007-11-12 17:59:10 +01001597 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001598 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001599 default 100
1600
Catalin Marinas16c79652009-07-24 12:33:02 +01001601config THUMB2_KERNEL
Russell King4a50bfe2010-12-05 23:06:22 +00001602 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
Russell Kinge399b1a2011-01-17 15:08:32 +00001603 depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
Catalin Marinas16c79652009-07-24 12:33:02 +01001604 select AEABI
1605 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001606 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001607 help
1608 By enabling this option, the kernel will be compiled in
1609 Thumb-2 mode. A compiler/assembler that understand the unified
1610 ARM-Thumb syntax is needed.
1611
1612 If unsure, say N.
1613
Dave Martin6f685c52011-03-03 11:41:12 +01001614config THUMB2_AVOID_R_ARM_THM_JUMP11
1615 bool "Work around buggy Thumb-2 short branch relocations in gas"
1616 depends on THUMB2_KERNEL && MODULES
1617 default y
1618 help
1619 Various binutils versions can resolve Thumb-2 branches to
1620 locally-defined, preemptible global symbols as short-range "b.n"
1621 branch instructions.
1622
1623 This is a problem, because there's no guarantee the final
1624 destination of the symbol, or any candidate locations for a
1625 trampoline, are within range of the branch. For this reason, the
1626 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1627 relocation in modules at all, and it makes little sense to add
1628 support.
1629
1630 The symptom is that the kernel fails with an "unsupported
1631 relocation" error when loading some modules.
1632
1633 Until fixed tools are available, passing
1634 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1635 code which hits this problem, at the cost of a bit of extra runtime
1636 stack usage in some cases.
1637
1638 The problem is described in more detail at:
1639 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1640
1641 Only Thumb-2 kernels are affected.
1642
1643 Unless you are sure your tools don't have this problem, say Y.
1644
Catalin Marinas0becb082009-07-24 12:32:53 +01001645config ARM_ASM_UNIFIED
1646 bool
1647
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001648config AEABI
1649 bool "Use the ARM EABI to compile the kernel"
1650 help
1651 This option allows for the kernel to be compiled using the latest
1652 ARM ABI (aka EABI). This is only useful if you are using a user
1653 space environment that is also compiled with EABI.
1654
1655 Since there are major incompatibilities between the legacy ABI and
1656 EABI, especially with regard to structure member alignment, this
1657 option also changes the kernel syscall calling convention to
1658 disambiguate both ABIs and allow for backward compatibility support
1659 (selected with CONFIG_OABI_COMPAT).
1660
1661 To use this you need GCC version 4.0.0 or later.
1662
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001663config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001664 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Dave Martin9bc433a2011-02-11 16:41:20 +01001665 depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001666 default y
1667 help
1668 This option preserves the old syscall interface along with the
1669 new (ARM EABI) one. It also provides a compatibility layer to
1670 intercept syscalls that have structure arguments which layout
1671 in memory differs between the legacy ABI and the new ARM EABI
1672 (only for non "thumb" binaries). This option adds a tiny
1673 overhead to all syscalls and produces a slightly larger kernel.
1674 If you know you'll be using only pure EABI user space then you
1675 can say N here. If this option is not selected and you attempt
1676 to execute a legacy ABI binary then the result will be
1677 UNPREDICTABLE (in fact it can be predicted that it won't work
1678 at all). If in doubt say Y.
1679
Mel Gormaneb335752009-05-13 17:34:48 +01001680config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001681 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001682
Russell King05944d72006-11-30 20:43:51 +00001683config ARCH_SPARSEMEM_ENABLE
1684 bool
1685
Russell King07a2f732008-10-01 21:39:58 +01001686config ARCH_SPARSEMEM_DEFAULT
1687 def_bool ARCH_SPARSEMEM_ENABLE
1688
Russell King05944d72006-11-30 20:43:51 +00001689config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001690 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001691
Will Deacon7b7bf492011-05-19 13:21:14 +01001692config HAVE_ARCH_PFN_VALID
1693 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1694
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001695config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001696 bool "High Memory Support"
1697 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001698 help
1699 The address space of ARM processors is only 4 Gigabytes large
1700 and it has to accommodate user address space, kernel address
1701 space as well as some memory mapped IO. That means that, if you
1702 have a large amount of physical memory and/or IO, not all of the
1703 memory can be "permanently mapped" by the kernel. The physical
1704 memory that is not permanently mapped is called "high memory".
1705
1706 Depending on the selected kernel/user memory split, minimum
1707 vmalloc space and actual amount of RAM, you may not need this
1708 option which should result in a slightly faster kernel.
1709
1710 If unsure, say n.
1711
Russell King65cec8e2009-08-17 20:02:06 +01001712config HIGHPTE
1713 bool "Allocate 2nd-level pagetables from highmem"
1714 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001715
Jamie Iles1b8873a2010-02-02 20:25:44 +01001716config HW_PERF_EVENTS
1717 bool "Enable hardware performance counter support for perf events"
Will Deaconfe166142010-04-30 11:37:51 +01001718 depends on PERF_EVENTS && CPU_HAS_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001719 default y
1720 help
1721 Enable hardware performance counter support for perf events. If
1722 disabled, perf events will use software events only.
1723
Dave Hansen3f22ab22005-06-23 00:07:43 -07001724source "mm/Kconfig"
1725
Magnus Dammc1b2d972010-07-05 10:00:11 +01001726config FORCE_MAX_ZONEORDER
1727 int "Maximum zone order" if ARCH_SHMOBILE
1728 range 11 64 if ARCH_SHMOBILE
1729 default "9" if SA1111
1730 default "11"
1731 help
1732 The kernel memory allocator divides physically contiguous memory
1733 blocks into "zones", where each zone is a power of two number of
1734 pages. This option selects the largest power of two that the kernel
1735 keeps in the memory allocator. If you need to allocate very large
1736 blocks of physically contiguous memory, then you may need to
1737 increase this value.
1738
1739 This config option is actually maximum order plus one. For example,
1740 a value of 11 means that the largest free memory block is 2^10 pages.
1741
Linus Torvalds1da177e2005-04-16 15:20:36 -07001742config LEDS
1743 bool "Timer and CPU usage LEDs"
Adrian Bunke055d5bf2008-04-22 01:43:27 +01001744 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
Sascha Hauer8c8fdbc2009-04-01 12:40:15 +02001745 ARCH_EBSA285 || ARCH_INTEGRATOR || \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001746 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1747 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +00001748 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele25329672008-09-16 21:36:30 +01001749 ARCH_AT91 || ARCH_DAVINCI || \
Colin Tuckleyff3042f2009-05-30 13:56:13 +01001750 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751 help
1752 If you say Y here, the LEDs on your machine will be used
1753 to provide useful information about your current system status.
1754
1755 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1756 be able to select which LEDs are active using the options below. If
1757 you are compiling a kernel for the EBSA-110 or the LART however, the
1758 red LED will simply flash regularly to indicate that the system is
1759 still functional. It is safe to say Y here if you have a CATS
1760 system, but the driver will do nothing.
1761
1762config LEDS_TIMER
1763 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownelleebdf7d72007-04-02 12:48:10 -07001764 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1765 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766 depends on LEDS
Kevin Hilman0567a0c2007-03-13 20:29:24 +01001767 depends on !GENERIC_CLOCKEVENTS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001768 default y if ARCH_EBSA110
1769 help
1770 If you say Y here, one of the system LEDs (the green one on the
1771 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1772 will flash regularly to indicate that the system is still
1773 operational. This is mainly useful to kernel hackers who are
1774 debugging unstable kernels.
1775
1776 The LART uses the same LED for both Timer LED and CPU usage LED
1777 functions. You may choose to use both, but the Timer LED function
1778 will overrule the CPU usage LED.
1779
1780config LEDS_CPU
1781 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownelleebdf7d72007-04-02 12:48:10 -07001782 !ARCH_OMAP) \
1783 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1784 || MACH_OMAP_PERSEUS2
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785 depends on LEDS
1786 help
1787 If you say Y here, the red LED will be used to give a good real
1788 time indication of CPU usage, by lighting whenever the idle task
1789 is not currently executing.
1790
1791 The LART uses the same LED for both Timer LED and CPU usage LED
1792 functions. You may choose to use both, but the Timer LED function
1793 will overrule the CPU usage LED.
1794
1795config ALIGNMENT_TRAP
1796 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001797 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001798 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001799 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001801 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1803 address divisible by 4. On 32-bit ARM processors, these non-aligned
1804 fetch/store instructions will be emulated in software if you say
1805 here, which has a severe performance impact. This is necessary for
1806 correct operation of some network protocols. With an IP-only
1807 configuration it is safe to say N, otherwise say Y.
1808
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001809config UACCESS_WITH_MEMCPY
1810 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1811 depends on MMU && EXPERIMENTAL
1812 default y if CPU_FEROCEON
1813 help
1814 Implement faster copy_to_user and clear_user methods for CPU
1815 cores where a 8-word STM instruction give significantly higher
1816 memory write throughput than a sequence of individual 32bit stores.
1817
1818 A possible side effect is a slight increase in scheduling latency
1819 between threads sharing the same address space if they invoke
1820 such copy operations with large buffers.
1821
1822 However, if the CPU data cache is using a write-allocate mode,
1823 this option is unlikely to provide any performance gain.
1824
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001825config SECCOMP
1826 bool
1827 prompt "Enable seccomp to safely compute untrusted bytecode"
1828 ---help---
1829 This kernel feature is useful for number crunching applications
1830 that may need to compute untrusted bytecode during their
1831 execution. By using pipes or other transports made available to
1832 the process as file descriptors supporting the read/write
1833 syscalls, it's possible to isolate those applications in
1834 their own address space using seccomp. Once seccomp is
1835 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1836 and the task is only allowed to execute a few safe syscalls
1837 defined by each seccomp mode.
1838
Nicolas Pitrec743f382010-05-24 23:55:42 -04001839config CC_STACKPROTECTOR
1840 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
Russell King4a50bfe2010-12-05 23:06:22 +00001841 depends on EXPERIMENTAL
Nicolas Pitrec743f382010-05-24 23:55:42 -04001842 help
1843 This option turns on the -fstack-protector GCC feature. This
1844 feature puts, at the beginning of functions, a canary value on
1845 the stack just before the return address, and validates
1846 the value just before actually returning. Stack based buffer
1847 overflows (that need to overwrite this return address) now also
1848 overwrite the canary, which gets detected and the attack is then
1849 neutralized via a kernel panic.
1850 This feature requires gcc version 4.2 or above.
1851
Uwe Kleine-König73a65b32010-01-19 10:13:14 +01001852config DEPRECATED_PARAM_STRUCT
1853 bool "Provide old way to pass kernel parameters"
1854 help
1855 This was deprecated in 2001 and announced to live on for 5 years.
1856 Some old boot loaders still use this way.
1857
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858endmenu
1859
1860menu "Boot options"
1861
Grant Likely9eb8f672011-04-28 14:27:20 -06001862config USE_OF
1863 bool "Flattened Device Tree support"
1864 select OF
1865 select OF_EARLY_FLATTREE
Grant Likely08a543a2011-07-26 03:19:06 -06001866 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001867 help
1868 Include support for flattened device tree machine descriptions.
1869
Linus Torvalds1da177e2005-04-16 15:20:36 -07001870# Compressed boot loader in ROM. Yes, we really want to ask about
1871# TEXT and BSS so we preserve their values in the config files.
1872config ZBOOT_ROM_TEXT
1873 hex "Compressed ROM boot loader base address"
1874 default "0"
1875 help
1876 The physical address at which the ROM-able zImage is to be
1877 placed in the target. Platforms which normally make use of
1878 ROM-able zImage formats normally set this to a suitable
1879 value in their defconfig file.
1880
1881 If ZBOOT_ROM is not enabled, this has no effect.
1882
1883config ZBOOT_ROM_BSS
1884 hex "Compressed ROM boot loader BSS address"
1885 default "0"
1886 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001887 The base address of an area of read/write memory in the target
1888 for the ROM-able zImage which must be available while the
1889 decompressor is running. It must be large enough to hold the
1890 entire decompressed kernel plus an additional 128 KiB.
1891 Platforms which normally make use of ROM-able zImage formats
1892 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001893
1894 If ZBOOT_ROM is not enabled, this has no effect.
1895
1896config ZBOOT_ROM
1897 bool "Compressed boot loader in ROM/flash"
1898 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1899 help
1900 Say Y here if you intend to execute your compressed kernel image
1901 (zImage) directly from ROM or flash. If unsure, say N.
1902
Simon Horman090ab3f2011-04-26 06:29:53 +01001903choice
1904 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
1905 depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1906 default ZBOOT_ROM_NONE
1907 help
1908 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001909 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001910 kernel image to an MMC or SD card and boot the kernel straight
1911 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001912 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001913 rest the kernel image to RAM.
1914
1915config ZBOOT_ROM_NONE
1916 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1917 help
1918 Do not load image from SD or MMC
1919
Simon Hormanf45b1142011-01-11 04:01:08 +01001920config ZBOOT_ROM_MMCIF
1921 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001922 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001923 Load image from MMCIF hardware block.
1924
1925config ZBOOT_ROM_SH_MOBILE_SDHI
1926 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1927 help
1928 Load image from SDHI hardware block
1929
1930endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001931
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001932config ARM_APPENDED_DTB
1933 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
1934 depends on OF && !ZBOOT_ROM && EXPERIMENTAL
1935 help
1936 With this option, the boot code will look for a device tree binary
1937 (DTB) appended to zImage
1938 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1939
1940 This is meant as a backward compatibility convenience for those
1941 systems with a bootloader that can't be upgraded to accommodate
1942 the documented boot protocol using a device tree.
1943
1944 Beware that there is very little in terms of protection against
1945 this option being confused by leftover garbage in memory that might
1946 look like a DTB header after a reboot if no actual DTB is appended
1947 to zImage. Do not leave this option active in a production kernel
1948 if you don't intend to always append a DTB. Proper passing of the
1949 location into r2 of a bootloader provided DTB is always preferable
1950 to this option.
1951
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001952config ARM_ATAG_DTB_COMPAT
1953 bool "Supplement the appended DTB with traditional ATAG information"
1954 depends on ARM_APPENDED_DTB
1955 help
1956 Some old bootloaders can't be updated to a DTB capable one, yet
1957 they provide ATAGs with memory configuration, the ramdisk address,
1958 the kernel cmdline string, etc. Such information is dynamically
1959 provided by the bootloader and can't always be stored in a static
1960 DTB. To allow a device tree enabled kernel to be used with such
1961 bootloaders, this option allows zImage to extract the information
1962 from the ATAG list and store it at run time into the appended DTB.
1963
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964config CMDLINE
1965 string "Default kernel command string"
1966 default ""
1967 help
1968 On some architectures (EBSA110 and CATS), there is currently no way
1969 for the boot loader to pass arguments to the kernel. For these
1970 architectures, you should supply some command-line options at build
1971 time by entering them here. As a minimum, you should specify the
1972 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1973
Victor Boivie4394c122011-05-04 17:07:55 +01001974choice
1975 prompt "Kernel command line type" if CMDLINE != ""
1976 default CMDLINE_FROM_BOOTLOADER
1977
1978config CMDLINE_FROM_BOOTLOADER
1979 bool "Use bootloader kernel arguments if available"
1980 help
1981 Uses the command-line options passed by the boot loader. If
1982 the boot loader doesn't provide any, the default kernel command
1983 string provided in CMDLINE will be used.
1984
1985config CMDLINE_EXTEND
1986 bool "Extend bootloader kernel arguments"
1987 help
1988 The command-line arguments provided by the boot loader will be
1989 appended to the default kernel command string.
1990
Alexander Holler92d20402010-02-16 19:04:53 +01001991config CMDLINE_FORCE
1992 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001993 help
1994 Always use the default kernel command string, even if the boot
1995 loader passes other arguments to the kernel.
1996 This is useful if you cannot or don't want to change the
1997 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001998endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001999
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000config XIP_KERNEL
2001 bool "Kernel Execute-In-Place from ROM"
Catalin Marinas497b7e92011-11-22 17:30:32 +00002002 depends on !ZBOOT_ROM && !ARM_LPAE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003 help
2004 Execute-In-Place allows the kernel to run from non-volatile storage
2005 directly addressable by the CPU, such as NOR flash. This saves RAM
2006 space since the text section of the kernel is not loaded from flash
2007 to RAM. Read-write sections, such as the data section and stack,
2008 are still copied to RAM. The XIP kernel is not compressed since
2009 it has to run directly from flash, so it will take more space to
2010 store it. The flash address used to link the kernel object files,
2011 and for storing it, is configuration dependent. Therefore, if you
2012 say Y here, you must know the proper physical address where to
2013 store the kernel image depending on your own flash memory usage.
2014
2015 Also note that the make target becomes "make xipImage" rather than
2016 "make zImage" or "make Image". The final kernel binary to put in
2017 ROM memory will be arch/arm/boot/xipImage.
2018
2019 If unsure, say N.
2020
2021config XIP_PHYS_ADDR
2022 hex "XIP Kernel Physical Location"
2023 depends on XIP_KERNEL
2024 default "0x00080000"
2025 help
2026 This is the physical address in your flash memory the kernel will
2027 be linked for and stored to. This address is dependent on your
2028 own flash usage.
2029
Richard Purdiec587e4a2007-02-06 21:29:00 +01002030config KEXEC
2031 bool "Kexec system call (EXPERIMENTAL)"
Will Deacon02b73e22011-06-06 15:49:23 +01002032 depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002033 help
2034 kexec is a system call that implements the ability to shutdown your
2035 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002036 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002037 you can start any kernel with it, not just Linux.
2038
2039 It is an ongoing process to be certain the hardware in a machine
2040 is properly shutdown, so do not be surprised if this code does not
2041 initially work for you. It may help to enable device hotplugging
2042 support.
2043
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002044config ATAGS_PROC
2045 bool "Export atags in procfs"
Uli Luckasb98d7292008-02-22 16:45:18 +01002046 depends on KEXEC
2047 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002048 help
2049 Should the atags used to boot the kernel be exported in an "atags"
2050 file in procfs. Useful with kexec.
2051
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002052config CRASH_DUMP
2053 bool "Build kdump crash kernel (EXPERIMENTAL)"
2054 depends on EXPERIMENTAL
2055 help
2056 Generate crash dump after being started by kexec. This should
2057 be normally only set in special crash dump kernels which are
2058 loaded in the main kernel with kexec-tools into a specially
2059 reserved region and then later executed after a crash by
2060 kdump/kexec. The crash dump kernel must be compiled to a
2061 memory address not used by the main kernel
2062
2063 For more details see Documentation/kdump/kdump.txt
2064
Eric Miaoe69edc792010-07-05 15:56:50 +02002065config AUTO_ZRELADDR
2066 bool "Auto calculation of the decompressed kernel image address"
2067 depends on !ZBOOT_ROM && !ARCH_U300
2068 help
2069 ZRELADDR is the physical address where the decompressed kernel
2070 image will be placed. If AUTO_ZRELADDR is selected, the address
2071 will be determined at run-time by masking the current IP with
2072 0xf8000000. This assumes the zImage being placed in the first 128MB
2073 from start of memory.
2074
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075endmenu
2076
Russell Kingac9d7ef2008-08-18 17:26:00 +01002077menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078
Ben Dooks89c52ed2009-07-30 23:23:24 +01002079if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080
2081source "drivers/cpufreq/Kconfig"
2082
Yong Shen64f102b2010-10-21 21:18:59 +08002083config CPU_FREQ_IMX
2084 tristate "CPUfreq driver for i.MX CPUs"
2085 depends on ARCH_MXC && CPU_FREQ
2086 help
2087 This enables the CPUfreq driver for i.MX CPUs.
2088
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089config CPU_FREQ_SA1100
2090 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091
2092config CPU_FREQ_SA1110
2093 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07002094
2095config CPU_FREQ_INTEGRATOR
2096 tristate "CPUfreq driver for ARM Integrator CPUs"
2097 depends on ARCH_INTEGRATOR && CPU_FREQ
2098 default y
2099 help
2100 This enables the CPUfreq driver for ARM Integrator CPUs.
2101
2102 For details, take a look at <file:Documentation/cpu-freq>.
2103
2104 If in doubt, say Y.
2105
Russell King9e2697f2007-12-14 13:30:14 +00002106config CPU_FREQ_PXA
2107 bool
2108 depends on CPU_FREQ && ARCH_PXA && PXA25x
2109 default y
Arnd Bergmannca7d1562011-10-01 22:03:51 +02002110 select CPU_FREQ_TABLE
Russell King9e2697f2007-12-14 13:30:14 +00002111 select CPU_FREQ_DEFAULT_GOV_USERSPACE
2112
Ben Dooks9d56c022009-07-30 23:23:25 +01002113config CPU_FREQ_S3C
2114 bool
2115 help
2116 Internal configuration node for common cpufreq on Samsung SoC
2117
2118config CPU_FREQ_S3C24XX
Russell King4a50bfe2010-12-05 23:06:22 +00002119 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
Kukjin Kimb130d5c2012-02-03 14:29:23 +09002120 depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
Ben Dooks9d56c022009-07-30 23:23:25 +01002121 select CPU_FREQ_S3C
2122 help
2123 This enables the CPUfreq driver for the Samsung S3C24XX family
2124 of CPUs.
2125
2126 For details, take a look at <file:Documentation/cpu-freq>.
2127
2128 If in doubt, say N.
2129
2130config CPU_FREQ_S3C24XX_PLL
Russell King4a50bfe2010-12-05 23:06:22 +00002131 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
Ben Dooks9d56c022009-07-30 23:23:25 +01002132 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
2133 help
2134 Compile in support for changing the PLL frequency from the
2135 S3C24XX series CPUfreq driver. The PLL takes time to settle
2136 after a frequency change, so by default it is not enabled.
2137
2138 This also means that the PLL tables for the selected CPU(s) will
2139 be built which may increase the size of the kernel image.
2140
2141config CPU_FREQ_S3C24XX_DEBUG
2142 bool "Debug CPUfreq Samsung driver core"
2143 depends on CPU_FREQ_S3C24XX
2144 help
2145 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
2146
2147config CPU_FREQ_S3C24XX_IODEBUG
2148 bool "Debug CPUfreq Samsung driver IO timing"
2149 depends on CPU_FREQ_S3C24XX
2150 help
2151 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
2152
Ben Dookse6d197a2009-07-30 23:23:42 +01002153config CPU_FREQ_S3C24XX_DEBUGFS
2154 bool "Export debugfs for CPUFreq"
2155 depends on CPU_FREQ_S3C24XX && DEBUG_FS
2156 help
2157 Export status information via debugfs.
2158
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159endif
2160
Russell Kingac9d7ef2008-08-18 17:26:00 +01002161source "drivers/cpuidle/Kconfig"
2162
2163endmenu
2164
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165menu "Floating point emulation"
2166
2167comment "At least one emulation must be selected"
2168
2169config FPE_NWFPE
2170 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002171 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002172 ---help---
2173 Say Y to include the NWFPE floating point emulator in the kernel.
2174 This is necessary to run most binaries. Linux does not currently
2175 support floating point hardware so you need to say Y here even if
2176 your machine has an FPA or floating point co-processor podule.
2177
2178 You may say N here if you are going to load the Acorn FPEmulator
2179 early in the bootup.
2180
2181config FPE_NWFPE_XP
2182 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002183 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002184 help
2185 Say Y to include 80-bit support in the kernel floating-point
2186 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2187 Note that gcc does not generate 80-bit operations by default,
2188 so in most cases this option only enlarges the size of the
2189 floating point emulator without any good reason.
2190
2191 You almost surely want to say N here.
2192
2193config FPE_FASTFPE
2194 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +00002195 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002196 ---help---
2197 Say Y here to include the FAST floating point emulator in the kernel.
2198 This is an experimental much faster emulator which now also has full
2199 precision for the mantissa. It does not support any exceptions.
2200 It is very simple, and approximately 3-6 times faster than NWFPE.
2201
2202 It should be sufficient for most programs. It may be not suitable
2203 for scientific calculations, but you have to check this for yourself.
2204 If you do not feel you need a faster FP emulation you should better
2205 choose NWFPE.
2206
2207config VFP
2208 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002209 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002210 help
2211 Say Y to include VFP support code in the kernel. This is needed
2212 if your hardware includes a VFP unit.
2213
2214 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2215 release notes and additional status information.
2216
2217 Say N if your target does not have VFP hardware.
2218
Catalin Marinas25ebee02007-09-25 15:22:24 +01002219config VFPv3
2220 bool
2221 depends on VFP
2222 default y if CPU_V7
2223
Catalin Marinasb5872db2008-01-10 19:16:17 +01002224config NEON
2225 bool "Advanced SIMD (NEON) Extension support"
2226 depends on VFPv3 && CPU_V7
2227 help
2228 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2229 Extension.
2230
Linus Torvalds1da177e2005-04-16 15:20:36 -07002231endmenu
2232
2233menu "Userspace binary formats"
2234
2235source "fs/Kconfig.binfmt"
2236
2237config ARTHUR
2238 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002239 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002240 help
2241 Say Y here to include the kernel code necessary if you want to run
2242 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2243 experimental; if this sounds frightening, say N and sleep in peace.
2244 You can also say M here to compile this support as a module (which
2245 will be called arthur).
2246
2247endmenu
2248
2249menu "Power management options"
2250
Russell Kingeceab4a2005-11-15 11:31:41 +00002251source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002252
Johannes Bergf4cb5702007-12-08 02:14:00 +01002253config ARCH_SUSPEND_POSSIBLE
Stephen Warren3d5e8af2012-04-13 15:30:07 -06002254 depends on !ARCH_S5PC100 && !ARCH_TEGRA
Russell King6a786182011-04-02 10:15:28 +01002255 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
Chao Xie3f5d0812012-05-07 11:23:58 +08002256 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002257 def_bool y
2258
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002259config ARM_CPU_SUSPEND
2260 def_bool PM_SLEEP
2261
Linus Torvalds1da177e2005-04-16 15:20:36 -07002262endmenu
2263
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002264source "net/Kconfig"
2265
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002266source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002267
2268source "fs/Kconfig"
2269
Linus Torvalds1da177e2005-04-16 15:20:36 -07002270source "arch/arm/Kconfig.debug"
2271
2272source "security/Kconfig"
2273
2274source "crypto/Kconfig"
2275
2276source "lib/Kconfig"