blob: b2796c806f424dba66d900c36442a4d3cf61c0bc [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Russell Kingb1b3f492012-10-06 17:12:25 +01004 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
Catalin Marinas74634492012-07-30 14:41:09 -07005 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Mark Rutland3d067702012-10-30 12:13:42 +00006 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Russell King171b3f02013-09-12 21:24:42 +01007 select ARCH_HAVE_CUSTOM_GPIO_H
Riku Voipio957e3fa2014-12-12 16:57:44 -08008 select ARCH_HAS_GCOV_PROFILE_ALL
Mark Salterd7018842013-10-07 22:07:58 -04009 select ARCH_MIGHT_HAVE_PC_PARPORT
Peter Zijlstra4badad32014-06-06 19:53:16 +020010 select ARCH_SUPPORTS_ATOMIC_RMW
Kim Phillips017f1612013-11-06 05:15:24 +010011 select ARCH_USE_BUILTIN_BSWAP
Will Deacon0cbad9c2013-10-09 17:19:22 +010012 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010013 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010014 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010015 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010016 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacondce5c9e2013-12-17 19:50:16 +010017 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
Laura Abbott36d0fd22014-10-09 15:26:42 -070018 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010019 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010020 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010021 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_IRQ_PROBE
23 select GENERIC_IRQ_SHOW
Russell Kingb1b3f492012-10-06 17:12:25 +010024 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070025 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010026 select GENERIC_SMP_IDLE_THREAD
27 select GENERIC_STRNCPY_FROM_USER
28 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010029 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010030 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090031 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010032 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Rabin Vincent09f05d82012-02-18 17:52:41 +010033 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060034 select HAVE_ARCH_KGDB
Kees Cook91702172013-11-09 00:51:56 +010035 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010036 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010037 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010038 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010039 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010040 select HAVE_C_RECORDMCOUNT
41 select HAVE_DEBUG_KMEMLEAK
42 select HAVE_DMA_API_DEBUG
43 select HAVE_DMA_ATTRS
44 select HAVE_DMA_CONTIGUOUS if MMU
45 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Will Deacondce5c9e2013-12-17 19:50:16 +010046 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010047 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
48 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
49 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
50 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010051 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
52 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010053 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070055 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010056 select HAVE_KERNEL_LZMA
57 select HAVE_KERNEL_LZO
58 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010059 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080060 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010061 select HAVE_MEMBLOCK
Russell King171b3f02013-09-12 21:24:42 +010062 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
Russell Kingb1b3f492012-10-06 17:12:25 +010063 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080064 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010065 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010066 select HAVE_PERF_REGS
67 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070068 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010069 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010070 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070071 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070072 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010073 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010074 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040075 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010076 select OLD_SIGACTION
77 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010078 select PERF_USE_VMALLOC
79 select RTC_LIB
80 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010081 # Above selects are sorted alphabetically; please add new ones
82 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 help
84 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000085 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000087 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 Europe. There is an ARM Linux project with a web page at
89 <http://www.arm.linux.org.uk/>.
90
Russell King74facff2011-06-02 11:16:22 +010091config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070092 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010093 bool
94
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020095config NEED_SG_DMA_LENGTH
96 bool
97
98config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020099 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100100 select ARM_HAS_SG_CHAIN
101 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200102
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900103if ARM_DMA_USE_IOMMU
104
105config ARM_DMA_IOMMU_ALIGNMENT
106 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
107 range 4 9
108 default 8
109 help
110 DMA mapping framework by default aligns all buffers to the smallest
111 PAGE_SIZE order which is greater than or equal to the requested buffer
112 size. This works well for buffers up to a few hundreds kilobytes, but
113 for larger buffers it just a waste of address space. Drivers which has
114 relatively small addressing window (like 64Mib) might run out of
115 virtual space with just a few allocations.
116
117 With this parameter you can specify the maximum PAGE_SIZE order for
118 DMA IOMMU buffers. Larger buffers will be aligned only to this
119 specified order. The order is expressed as a power of two multiplied
120 by the PAGE_SIZE.
121
122endif
123
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100124config MIGHT_HAVE_PCI
125 bool
126
Ralf Baechle75e71532007-02-09 17:08:58 +0000127config SYS_SUPPORTS_APM_EMULATION
128 bool
129
Linus Walleijbc581772009-09-15 17:30:37 +0100130config HAVE_TCM
131 bool
132 select GENERIC_ALLOCATOR
133
Russell Kinge119bff2010-01-10 17:23:29 +0000134config HAVE_PROC_CPU
135 bool
136
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700137config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000138 bool
Al Viro5ea81762007-02-11 15:41:31 +0000139
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140config EISA
141 bool
142 ---help---
143 The Extended Industry Standard Architecture (EISA) bus was
144 developed as an open alternative to the IBM MicroChannel bus.
145
146 The EISA bus provided some of the features of the IBM MicroChannel
147 bus while maintaining backward compatibility with cards made for
148 the older ISA bus. The EISA bus saw limited use between 1988 and
149 1995 when it was made obsolete by the PCI bus.
150
151 Say Y here if you are building a kernel for an EISA-based machine.
152
153 Otherwise, say N.
154
155config SBUS
156 bool
157
Russell Kingf16fb1e2007-04-28 09:59:37 +0100158config STACKTRACE_SUPPORT
159 bool
160 default y
161
Nicolas Pitref76e9152008-04-24 01:31:46 -0400162config HAVE_LATENCYTOP_SUPPORT
163 bool
164 depends on !SMP
165 default y
166
Russell Kingf16fb1e2007-04-28 09:59:37 +0100167config LOCKDEP_SUPPORT
168 bool
169 default y
170
Russell King7ad1bcb2006-08-27 12:07:02 +0100171config TRACE_IRQFLAGS_SUPPORT
172 bool
173 default y
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175config RWSEM_XCHGADD_ALGORITHM
176 bool
Will Deacon8a874112014-05-02 17:06:19 +0100177 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
David Howellsf0d1b0b2006-12-08 02:37:49 -0800179config ARCH_HAS_ILOG2_U32
180 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800181
182config ARCH_HAS_ILOG2_U64
183 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800184
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100185config ARCH_HAS_BANDGAP
186 bool
187
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800188config GENERIC_HWEIGHT
189 bool
190 default y
191
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192config GENERIC_CALIBRATE_DELAY
193 bool
194 default y
195
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100196config ARCH_MAY_HAVE_PC_FDC
197 bool
198
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800199config ZONE_DMA
200 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800201
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800202config NEED_DMA_MAP_STATE
203 def_bool y
204
David A. Longc7edc9e2014-03-07 11:23:04 -0500205config ARCH_SUPPORTS_UPROBES
206 def_bool y
207
Rob Herring58af4a22012-03-20 14:33:01 -0500208config ARCH_HAS_DMA_SET_COHERENT_MASK
209 bool
210
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211config GENERIC_ISA_DMA
212 bool
213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214config FIQ
215 bool
216
Rob Herring13a50452012-02-07 09:28:22 -0600217config NEED_RET_TO_USER
218 bool
219
Al Viro034d2f52005-12-19 16:27:59 -0500220config ARCH_MTD_XIP
221 bool
222
Hyok S. Choic760fc12006-03-27 15:18:50 +0100223config VECTORS_BASE
224 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900225 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100226 default DRAM_BASE if REMAP_VECTORS_TO_RAM
227 default 0x00000000
228 help
Russell King19accfd2013-07-04 11:40:32 +0100229 The base address of exception vectors. This must be two pages
230 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100231
Russell Kingdc21af92011-01-04 19:09:43 +0000232config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100233 bool "Patch physical to virtual translations at runtime" if EMBEDDED
234 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100235 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000236 depends on !ARCH_REALVIEW || !SPARSEMEM
237 help
Russell King111e9a52011-05-12 10:02:42 +0100238 Patch phys-to-virt and virt-to-phys translation functions at
239 boot and module load time according to the position of the
240 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000241
Russell King111e9a52011-05-12 10:02:42 +0100242 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100243 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000244
Russell Kingc1beced2011-08-10 10:23:45 +0100245 Only disable this option if you know that you do not require
246 this feature (eg, building a kernel for a single machine) and
247 you need to shrink the kernel to the minimal size.
248
Rob Herringc334bc12012-03-04 22:03:33 -0600249config NEED_MACH_IO_H
250 bool
251 help
252 Select this when mach/io.h is required to provide special
253 definitions for this platform. The need for mach/io.h should
254 be avoided when possible.
255
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400256config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400257 bool
Russell King111e9a52011-05-12 10:02:42 +0100258 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400259 Select this when mach/memory.h is required to provide special
260 definitions for this platform. The need for mach/memory.h should
261 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400262
263config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100264 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100265 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100266 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100267 default 0x00000000 if ARCH_EBSA110 || \
268 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
269 ARCH_FOOTBRIDGE || \
270 ARCH_INTEGRATOR || \
271 ARCH_IOP13XX || \
272 ARCH_KS8695 || \
273 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
274 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
275 default 0x20000000 if ARCH_S5PV210
276 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
277 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
278 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
279 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
280 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400281 help
282 Please provide the physical address corresponding to the
283 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000284
Simon Glass87e040b2011-08-16 23:44:26 +0100285config GENERIC_BUG
286 def_bool y
287 depends on BUG
288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289source "init/Kconfig"
290
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700291source "kernel/Kconfig.freezer"
292
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293menu "System Type"
294
Hyok S. Choi3c427972009-07-24 12:35:00 +0100295config MMU
296 bool "MMU-based Paged Memory Management Support"
297 default y
298 help
299 Select if you want MMU-based virtualised addressing space
300 support by paged memory management. If unsure, say 'Y'.
301
Russell Kingccf50e22010-03-15 19:03:06 +0000302#
303# The "ARM system type" choice list is ordered alphabetically by option
304# text. Please add new entries in the option alphabetic order.
305#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306choice
307 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100308 default ARCH_VERSATILE if !MMU
309 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Rob Herring387798b2012-09-06 13:41:12 -0500311config ARCH_MULTIPLATFORM
312 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100313 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600314 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700315 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500316 select ARM_PATCH_PHYS_VIRT
317 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500318 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600319 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600320 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100321 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500322 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600323 select SPARSE_IRQ
324 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600325
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100326config ARCH_REALVIEW
327 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100328 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100329 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100330 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200331 select COMMON_CLK
332 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100333 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100334 select GPIO_PL061 if GPIOLIB
335 select ICST
336 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000337 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000338 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100339 help
340 This enables support for ARM Ltd RealView boards.
341
342config ARCH_VERSATILE
343 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100344 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100345 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100346 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100347 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100348 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100349 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900350 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000351 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000352 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100353 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000354 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100355 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100356 help
357 This enables support for ARM Ltd Versatile board.
358
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100359config ARCH_AT91
360 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100361 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100362 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100363 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500364 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800365 select PINCTRL
Nicolas Ferred48346c2014-11-21 16:41:50 +0100366 select PINCTRL_AT91
367 select USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100368 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100369 This enables support for systems based on Atmel
Nicolas Ferre32963a82014-11-21 16:44:31 +0100370 AT91RM9200, AT91SAM9 and SAMA5 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100371
Russell King93e22562012-10-12 14:20:52 +0100372config ARCH_CLPS711X
373 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400374 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400375 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400376 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100377 select COMMON_CLK
378 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400379 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400380 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400381 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100382 help
383 Support for Cirrus Logic 711x/721x/731x based boards.
384
Russell King788c9702009-04-26 14:21:59 +0100385config ARCH_GEMINI
386 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100387 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200388 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100389 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200390 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100391 help
392 Support for the Cortina Systems Gemini family SoCs
393
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394config ARCH_EBSA110
395 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100396 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000397 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100398 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600399 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400400 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700401 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 help
403 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000404 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 Ethernet interface, two PCMCIA sockets, two serial ports and a
406 parallel port.
407
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100408config ARCH_EFM32
409 bool "Energy Micro efm32"
410 depends on !MMU
411 select ARCH_REQUIRE_GPIOLIB
412 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100413 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100414 select CLKSRC_OF
415 select COMMON_CLK
416 select CPU_V7M
417 select GENERIC_CLOCKEVENTS
418 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700419 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100420 select SPARSE_IRQ
421 select USE_OF
422 help
423 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
424 processors.
425
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000426config ARCH_EP93XX
427 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100428 select ARCH_HAS_HOLES_MEMORYMODEL
429 select ARCH_REQUIRE_GPIOLIB
430 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000431 select ARM_AMBA
432 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100433 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100434 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000435 help
436 This enables support for the Cirrus EP93xx series of CPUs.
437
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438config ARCH_FOOTBRIDGE
439 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000440 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000442 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200443 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600444 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400445 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000446 help
447 Support for systems based on the DC21285 companion chip
448 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100450config ARCH_NETX
451 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100452 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100453 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000454 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100455 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000456 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100457 This enables support for systems based on the Hilscher NetX Soc
458
Russell King3b938be2007-05-12 11:25:44 +0100459config ARCH_IOP13XX
460 bool "IOP13xx-based"
461 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100462 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400463 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600464 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100465 select PCI
466 select PLAT_IOP
467 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000468 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100469 help
470 Support for Intel's IOP13XX (XScale) family of processors.
471
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100472config ARCH_IOP32X
473 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100474 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100475 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000476 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200477 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600478 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100479 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100480 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000481 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100482 Support for Intel's 80219 and IOP32X (XScale) family of
483 processors.
484
485config ARCH_IOP33X
486 bool "IOP33x-based"
487 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100488 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000489 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200490 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600491 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100492 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100493 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100494 help
495 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
Russell King3b938be2007-05-12 11:25:44 +0100497config ARCH_IXP4XX
498 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100499 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500500 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100501 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100502 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100503 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000504 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100505 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100506 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100507 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600508 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200509 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100510 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100511 help
Russell King3b938be2007-05-12 11:25:44 +0100512 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100513
Saeed Bisharaedabd382009-08-06 15:12:43 +0300514config ARCH_DOVE
515 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300516 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100517 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300518 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100519 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100520 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100521 select PINCTRL
522 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200523 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300524 help
525 Support for the Marvell Dove SoC 88AP510
526
Russell King788c9702009-04-26 14:21:59 +0100527config ARCH_MV78XX0
528 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700529 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100530 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100531 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100532 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100533 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200534 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100535 help
536 Support for the following Marvell MV78xx0 series SoCs:
537 MV781x0, MV782x0.
538
539config ARCH_ORION5X
540 bool "Marvell Orion"
541 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700542 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100543 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100544 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100545 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100546 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200547 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100548 help
549 Support for the following Marvell Orion 5x series SoCs:
550 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
551 Orion-2 (5281), Orion-1-90 (6183).
552
553config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500554 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100555 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100556 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100557 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100558 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100559 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800560 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800561 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800562 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800563 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100564 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400565 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100566 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500567 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100568
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100569config ARCH_KS8695
570 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100571 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200572 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100573 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200574 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100575 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100576 help
577 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
578 System-on-Chip devices.
579
Russell King788c9702009-04-26 14:21:59 +0100580config ARCH_W90X900
581 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100582 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100583 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100584 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100585 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100586 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200587 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100588 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
589 At present, the w90x900 has been renamed nuc900, regarding
590 the ARM series product line, you can login the following
591 link address to know more.
592
593 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
594 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400595
Russell King93e22562012-10-12 14:20:52 +0100596config ARCH_LPC32XX
597 bool "NXP LPC32XX"
598 select ARCH_REQUIRE_GPIOLIB
599 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000600 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100601 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100602 select CPU_ARM926T
603 select GENERIC_CLOCKEVENTS
604 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100605 select USE_OF
606 help
607 Support for the NXP LPC32XX family of processors
608
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700610 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100611 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100612 select ARCH_MTD_XIP
613 select ARCH_REQUIRE_GPIOLIB
614 select ARM_CPU_SUSPEND if PM
615 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100616 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100617 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200618 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100619 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800620 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100621 select HAVE_IDE
622 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800623 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800624 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000625 help
eric miao2c8086a2007-09-11 19:13:17 -0700626 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600628config ARCH_MSM
629 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700630 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700631 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100632 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800633 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800634 Support for Qualcomm MSM/QSD based systems. This runs on the
635 apps processor of the MSM/QSD and depends on a shared memory
636 interface to the modem processor which runs the baseband
637 stack and controls some vital subsystems
638 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800639
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100640config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100641 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100642 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100643 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900644 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900645 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100646 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800647 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800648 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900649 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000650 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000651 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000652 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700653 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200654 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100655 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900656 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100657 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000658 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100659 Support for Renesas ARM SoC platforms using a non-multiplatform
660 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
661 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000662
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663config ARCH_RPC
664 bool "RiscPC"
665 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100666 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100667 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000668 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100669 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100670 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200671 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100672 select HAVE_PATA_PLATFORM
673 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600674 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400675 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700676 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100677 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 help
679 On the Acorn Risc-PC, Linux can support the internal IDE disk and
680 CD-ROM interface, serial and parallel port, and the floppy drive.
681
682config ARCH_SA1100
683 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100684 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700685 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select ARCH_SPARSEMEM_ENABLE
687 select CLKDEV_LOOKUP
688 select CLKSRC_MMIO
689 select CPU_FREQ
690 select CPU_SA1100
691 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200692 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100693 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100694 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100695 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400696 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100697 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000698 help
699 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900701config ARCH_S3C24XX
702 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900703 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100704 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100705 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200706 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800707 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900708 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900709 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900710 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100711 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900712 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600713 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900714 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900716 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
717 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
718 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
719 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900720
Ben Dooksa08ab632008-10-21 14:06:39 +0100721config ARCH_S3C64XX
722 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900723 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200724 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100725 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100726 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100727 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200728 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900729 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900730 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800731 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900732 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900733 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900734 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100735 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700736 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100737 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100738 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100739 select S3C_DEV_NAND
740 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900741 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900742 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900743 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100744 help
745 Samsung S3C64XX series based systems
746
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100747config ARCH_DAVINCI
748 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100749 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700750 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100751 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700752 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100753 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100754 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100755 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500756 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530757 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100758 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100759 help
760 Support for TI's DaVinci platform.
761
Tony Lindgrena0694862013-01-11 11:24:20 -0800762config ARCH_OMAP1
763 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600764 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100765 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800766 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100767 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200768 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100769 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100770 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800771 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800772 select HAVE_IDE
773 select IRQ_DOMAIN
774 select NEED_MACH_IO_H if PCCARD
775 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100776 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800777 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800778
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779endchoice
780
Rob Herring387798b2012-09-06 13:41:12 -0500781menu "Multiple platform selection"
782 depends on ARCH_MULTIPLATFORM
783
784comment "CPU Core family selection"
785
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100786config ARCH_MULTI_V4
787 bool "ARMv4 based platforms (FA526)"
788 depends on !ARCH_MULTI_V6_V7
789 select ARCH_MULTI_V4_V5
790 select CPU_FA526
791
Rob Herring387798b2012-09-06 13:41:12 -0500792config ARCH_MULTI_V4T
793 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500794 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100795 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200796 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
797 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
798 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500799
800config ARCH_MULTI_V5
801 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500802 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100803 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100804 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200805 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
806 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500807
808config ARCH_MULTI_V4_V5
809 bool
810
811config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800812 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500813 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600814 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500815
816config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800817 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500818 default y
819 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100820 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600821 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500822
823config ARCH_MULTI_V6_V7
824 bool
Rob Herring9352b052014-01-31 15:36:10 -0600825 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500826
827config ARCH_MULTI_CPU_AUTO
828 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
829 select ARCH_MULTI_V5
830
831endmenu
832
Rob Herring05e2a3d2013-12-05 10:04:54 -0600833config ARCH_VIRT
834 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600835 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600836 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600837 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600838 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600839
Russell Kingccf50e22010-03-15 19:03:06 +0000840#
841# This is sorted alphabetically by mach-* pathname. However, plat-*
842# Kconfigs may be included either alphabetically (according to the
843# plat- suffix) or along side the corresponding mach-* source.
844#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200845source "arch/arm/mach-mvebu/Kconfig"
846
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200847source "arch/arm/mach-alpine/Kconfig"
848
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100849source "arch/arm/mach-asm9260/Kconfig"
850
Russell King95b8f202010-01-14 11:43:54 +0000851source "arch/arm/mach-at91/Kconfig"
852
Anders Berg1d22924e2014-05-23 11:08:35 +0200853source "arch/arm/mach-axxia/Kconfig"
854
Christian Daudt8ac49e02012-11-19 09:46:10 -0800855source "arch/arm/mach-bcm/Kconfig"
856
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200857source "arch/arm/mach-berlin/Kconfig"
858
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859source "arch/arm/mach-clps711x/Kconfig"
860
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300861source "arch/arm/mach-cns3xxx/Kconfig"
862
Russell King95b8f202010-01-14 11:43:54 +0000863source "arch/arm/mach-davinci/Kconfig"
864
Baruch Siachdf8d7422015-01-14 10:40:30 +0200865source "arch/arm/mach-digicolor/Kconfig"
866
Russell King95b8f202010-01-14 11:43:54 +0000867source "arch/arm/mach-dove/Kconfig"
868
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000869source "arch/arm/mach-ep93xx/Kconfig"
870
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871source "arch/arm/mach-footbridge/Kconfig"
872
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200873source "arch/arm/mach-gemini/Kconfig"
874
Rob Herring387798b2012-09-06 13:41:12 -0500875source "arch/arm/mach-highbank/Kconfig"
876
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800877source "arch/arm/mach-hisi/Kconfig"
878
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879source "arch/arm/mach-integrator/Kconfig"
880
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100881source "arch/arm/mach-iop32x/Kconfig"
882
883source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884
Dan Williams285f5fa2006-12-07 02:59:39 +0100885source "arch/arm/mach-iop13xx/Kconfig"
886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887source "arch/arm/mach-ixp4xx/Kconfig"
888
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400889source "arch/arm/mach-keystone/Kconfig"
890
Russell King95b8f202010-01-14 11:43:54 +0000891source "arch/arm/mach-ks8695/Kconfig"
892
Carlo Caione3b8f5032014-09-10 22:16:59 +0200893source "arch/arm/mach-meson/Kconfig"
894
Russell King95b8f202010-01-14 11:43:54 +0000895source "arch/arm/mach-msm/Kconfig"
896
Jonas Jensen17723fd32013-12-18 13:58:45 +0100897source "arch/arm/mach-moxart/Kconfig"
898
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200899source "arch/arm/mach-mv78xx0/Kconfig"
900
Shawn Guo3995eb82012-09-13 19:48:07 +0800901source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902
Matthias Bruggerf682a212014-05-13 01:06:13 +0200903source "arch/arm/mach-mediatek/Kconfig"
904
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800905source "arch/arm/mach-mxs/Kconfig"
906
Russell King95b8f202010-01-14 11:43:54 +0000907source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800908
Russell King95b8f202010-01-14 11:43:54 +0000909source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000910
Daniel Tang9851ca52013-06-11 18:40:17 +1000911source "arch/arm/mach-nspire/Kconfig"
912
Tony Lindgrend48af152005-07-10 19:58:17 +0100913source "arch/arm/plat-omap/Kconfig"
914
915source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916
Tony Lindgren1dbae812005-11-10 14:26:51 +0000917source "arch/arm/mach-omap2/Kconfig"
918
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400919source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400920
Rob Herring387798b2012-09-06 13:41:12 -0500921source "arch/arm/mach-picoxcell/Kconfig"
922
Russell King95b8f202010-01-14 11:43:54 +0000923source "arch/arm/mach-pxa/Kconfig"
924source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
Russell King95b8f202010-01-14 11:43:54 +0000926source "arch/arm/mach-mmp/Kconfig"
927
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600928source "arch/arm/mach-qcom/Kconfig"
929
Russell King95b8f202010-01-14 11:43:54 +0000930source "arch/arm/mach-realview/Kconfig"
931
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200932source "arch/arm/mach-rockchip/Kconfig"
933
Russell King95b8f202010-01-14 11:43:54 +0000934source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300935
Rob Herring387798b2012-09-06 13:41:12 -0500936source "arch/arm/mach-socfpga/Kconfig"
937
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100938source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100939
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100940source "arch/arm/mach-sti/Kconfig"
941
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900942source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943
Ben Dooks431107e2010-01-26 10:11:04 +0900944source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100945
Kukjin Kim170f4e42010-02-24 16:40:44 +0900946source "arch/arm/mach-s5pv210/Kconfig"
947
Kukjin Kim83014572011-11-06 13:54:56 +0900948source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500949source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900950
Russell King882d01f2010-03-02 23:40:15 +0000951source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952
Maxime Ripard3b526342012-11-08 12:40:16 +0100953source "arch/arm/mach-sunxi/Kconfig"
954
Barry Song156a0992012-08-23 13:41:58 +0800955source "arch/arm/mach-prima2/Kconfig"
956
Erik Gillingc5f80062010-01-21 16:53:02 -0800957source "arch/arm/mach-tegra/Kconfig"
958
Russell King95b8f202010-01-14 11:43:54 +0000959source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960
Russell King95b8f202010-01-14 11:43:54 +0000961source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962
963source "arch/arm/mach-versatile/Kconfig"
964
Russell Kingceade892010-02-11 21:44:53 +0000965source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000966source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000967
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300968source "arch/arm/mach-vt8500/Kconfig"
969
wanzongshun7ec80dd2008-12-03 03:55:38 +0100970source "arch/arm/mach-w90x900/Kconfig"
971
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600972source "arch/arm/mach-zynq/Kconfig"
973
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974# Definitions to make life easier
975config ARCH_ACORN
976 bool
977
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100978config PLAT_IOP
979 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700980 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100981
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400982config PLAT_ORION
983 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100984 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100985 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100986 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200987 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400988
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200989config PLAT_ORION_LEGACY
990 bool
991 select PLAT_ORION
992
Eric Miaobd5ce432009-01-20 12:06:01 +0800993config PLAT_PXA
994 bool
995
Russell Kingf4b8b312010-01-14 12:48:06 +0000996config PLAT_VERSATILE
997 bool
998
Russell Kinge3887712010-01-14 13:30:16 +0000999config ARM_TIMER_SP804
1000 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001001 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001002 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001003
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001004source "arch/arm/firmware/Kconfig"
1005
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006source arch/arm/mm/Kconfig
1007
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001008config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001009 bool "Enable iWMMXt support"
1010 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1011 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001012 help
1013 Enable support for iWMMXt context switching at run time if
1014 running on a CPU that supports it.
1015
eric miao52108642010-12-13 09:42:34 +01001016config MULTI_IRQ_HANDLER
1017 bool
1018 help
1019 Allow each machine to specify it's own IRQ handler at run time.
1020
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001021if !MMU
1022source "arch/arm/Kconfig-nommu"
1023endif
1024
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001025config PJ4B_ERRATA_4742
1026 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1027 depends on CPU_PJ4B && MACH_ARMADA_370
1028 default y
1029 help
1030 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1031 Event (WFE) IDLE states, a specific timing sensitivity exists between
1032 the retiring WFI/WFE instructions and the newly issued subsequent
1033 instructions. This sensitivity can result in a CPU hang scenario.
1034 Workaround:
1035 The software must insert either a Data Synchronization Barrier (DSB)
1036 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1037 instruction
1038
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001039config ARM_ERRATA_326103
1040 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1041 depends on CPU_V6
1042 help
1043 Executing a SWP instruction to read-only memory does not set bit 11
1044 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1045 treat the access as a read, preventing a COW from occurring and
1046 causing the faulting task to livelock.
1047
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001048config ARM_ERRATA_411920
1049 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001050 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001051 help
1052 Invalidation of the Instruction Cache operation can
1053 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1054 It does not affect the MPCore. This option enables the ARM Ltd.
1055 recommended workaround.
1056
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001057config ARM_ERRATA_430973
1058 bool "ARM errata: Stale prediction on replaced interworking branch"
1059 depends on CPU_V7
1060 help
1061 This option enables the workaround for the 430973 Cortex-A8
1062 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1063 interworking branch is replaced with another code sequence at the
1064 same virtual address, whether due to self-modifying code or virtual
1065 to physical address re-mapping, Cortex-A8 does not recover from the
1066 stale interworking branch prediction. This results in Cortex-A8
1067 executing the new code sequence in the incorrect ARM or Thumb state.
1068 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1069 and also flushes the branch target cache at every context switch.
1070 Note that setting specific bits in the ACTLR register may not be
1071 available in non-secure mode.
1072
Catalin Marinas855c5512009-04-30 17:06:15 +01001073config ARM_ERRATA_458693
1074 bool "ARM errata: Processor deadlock when a false hazard is created"
1075 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001076 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001077 help
1078 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1079 erratum. For very specific sequences of memory operations, it is
1080 possible for a hazard condition intended for a cache line to instead
1081 be incorrectly associated with a different cache line. This false
1082 hazard might then cause a processor deadlock. The workaround enables
1083 the L1 caching of the NEON accesses and disables the PLD instruction
1084 in the ACTLR register. Note that setting specific bits in the ACTLR
1085 register may not be available in non-secure mode.
1086
Catalin Marinas0516e462009-04-30 17:06:20 +01001087config ARM_ERRATA_460075
1088 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1089 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001090 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001091 help
1092 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1093 erratum. Any asynchronous access to the L2 cache may encounter a
1094 situation in which recent store transactions to the L2 cache are lost
1095 and overwritten with stale memory contents from external memory. The
1096 workaround disables the write-allocate mode for the L2 cache via the
1097 ACTLR register. Note that setting specific bits in the ACTLR register
1098 may not be available in non-secure mode.
1099
Will Deacon9f050272010-09-14 09:51:43 +01001100config ARM_ERRATA_742230
1101 bool "ARM errata: DMB operation may be faulty"
1102 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001103 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001104 help
1105 This option enables the workaround for the 742230 Cortex-A9
1106 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1107 between two write operations may not ensure the correct visibility
1108 ordering of the two writes. This workaround sets a specific bit in
1109 the diagnostic register of the Cortex-A9 which causes the DMB
1110 instruction to behave as a DSB, ensuring the correct behaviour of
1111 the two writes.
1112
Will Deacona672e992010-09-14 09:53:02 +01001113config ARM_ERRATA_742231
1114 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1115 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001116 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001117 help
1118 This option enables the workaround for the 742231 Cortex-A9
1119 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1120 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1121 accessing some data located in the same cache line, may get corrupted
1122 data due to bad handling of the address hazard when the line gets
1123 replaced from one of the CPUs at the same time as another CPU is
1124 accessing it. This workaround sets specific bits in the diagnostic
1125 register of the Cortex-A9 which reduces the linefill issuing
1126 capabilities of the processor.
1127
Jon Medhurst69155792013-06-07 10:35:35 +01001128config ARM_ERRATA_643719
1129 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1130 depends on CPU_V7 && SMP
1131 help
1132 This option enables the workaround for the 643719 Cortex-A9 (prior to
1133 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1134 register returns zero when it should return one. The workaround
1135 corrects this value, ensuring cache maintenance operations which use
1136 it behave as intended and avoiding data corruption.
1137
Will Deaconcdf357f2010-08-05 11:20:51 +01001138config ARM_ERRATA_720789
1139 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001140 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001141 help
1142 This option enables the workaround for the 720789 Cortex-A9 (prior to
1143 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1144 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1145 As a consequence of this erratum, some TLB entries which should be
1146 invalidated are not, resulting in an incoherency in the system page
1147 tables. The workaround changes the TLB flushing routines to invalidate
1148 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001149
1150config ARM_ERRATA_743622
1151 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1152 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001153 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001154 help
1155 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001156 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001157 optimisation in the Cortex-A9 Store Buffer may lead to data
1158 corruption. This workaround sets a specific bit in the diagnostic
1159 register of the Cortex-A9 which disables the Store Buffer
1160 optimisation, preventing the defect from occurring. This has no
1161 visible impact on the overall performance or power consumption of the
1162 processor.
1163
Will Deacon9a27c272011-02-18 16:36:35 +01001164config ARM_ERRATA_751472
1165 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001166 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001167 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001168 help
1169 This option enables the workaround for the 751472 Cortex-A9 (prior
1170 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1171 completion of a following broadcasted operation if the second
1172 operation is received by a CPU before the ICIALLUIS has completed,
1173 potentially leading to corrupted entries in the cache or TLB.
1174
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001175config ARM_ERRATA_754322
1176 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1177 depends on CPU_V7
1178 help
1179 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1180 r3p*) erratum. A speculative memory access may cause a page table walk
1181 which starts prior to an ASID switch but completes afterwards. This
1182 can populate the micro-TLB with a stale entry which may be hit with
1183 the new ASID. This workaround places two dsb instructions in the mm
1184 switching code so that no page table walks can cross the ASID switch.
1185
Will Deacon5dab26a2011-03-04 12:38:54 +01001186config ARM_ERRATA_754327
1187 bool "ARM errata: no automatic Store Buffer drain"
1188 depends on CPU_V7 && SMP
1189 help
1190 This option enables the workaround for the 754327 Cortex-A9 (prior to
1191 r2p0) erratum. The Store Buffer does not have any automatic draining
1192 mechanism and therefore a livelock may occur if an external agent
1193 continuously polls a memory location waiting to observe an update.
1194 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1195 written polling loops from denying visibility of updates to memory.
1196
Catalin Marinas145e10e2011-08-15 11:04:41 +01001197config ARM_ERRATA_364296
1198 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001199 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001200 help
1201 This options enables the workaround for the 364296 ARM1136
1202 r0p2 erratum (possible cache data corruption with
1203 hit-under-miss enabled). It sets the undocumented bit 31 in
1204 the auxiliary control register and the FI bit in the control
1205 register, thus disabling hit-under-miss without putting the
1206 processor into full low interrupt latency mode. ARM11MPCore
1207 is not affected.
1208
Will Deaconf630c1b2011-09-15 11:45:15 +01001209config ARM_ERRATA_764369
1210 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1211 depends on CPU_V7 && SMP
1212 help
1213 This option enables the workaround for erratum 764369
1214 affecting Cortex-A9 MPCore with two or more processors (all
1215 current revisions). Under certain timing circumstances, a data
1216 cache line maintenance operation by MVA targeting an Inner
1217 Shareable memory region may fail to proceed up to either the
1218 Point of Coherency or to the Point of Unification of the
1219 system. This workaround adds a DSB instruction before the
1220 relevant cache maintenance functions and sets a specific bit
1221 in the diagnostic control register of the SCU.
1222
Simon Horman7253b852012-09-28 02:12:45 +01001223config ARM_ERRATA_775420
1224 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1225 depends on CPU_V7
1226 help
1227 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1228 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1229 operation aborts with MMU exception, it might cause the processor
1230 to deadlock. This workaround puts DSB before executing ISB if
1231 an abort may occur on cache maintenance.
1232
Catalin Marinas93dc6882013-03-26 23:35:04 +01001233config ARM_ERRATA_798181
1234 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1235 depends on CPU_V7 && SMP
1236 help
1237 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1238 adequately shooting down all use of the old entries. This
1239 option enables the Linux kernel workaround for this erratum
1240 which sends an IPI to the CPUs that are running the same ASID
1241 as the one being invalidated.
1242
Will Deacon84b65042013-08-20 17:29:55 +01001243config ARM_ERRATA_773022
1244 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1245 depends on CPU_V7
1246 help
1247 This option enables the workaround for the 773022 Cortex-A15
1248 (up to r0p4) erratum. In certain rare sequences of code, the
1249 loop buffer may deliver incorrect instructions. This
1250 workaround disables the loop buffer to avoid the erratum.
1251
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252endmenu
1253
1254source "arch/arm/common/Kconfig"
1255
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256menu "Bus support"
1257
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258config ISA
1259 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001260 help
1261 Find out whether you have ISA slots on your motherboard. ISA is the
1262 name of a bus system, i.e. the way the CPU talks to the other stuff
1263 inside your box. Other bus systems are PCI, EISA, MicroChannel
1264 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1265 newer boards don't support it. If you have ISA, say Y, otherwise N.
1266
Russell King065909b2006-01-04 15:44:16 +00001267# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268config ISA_DMA
1269 bool
Russell King065909b2006-01-04 15:44:16 +00001270 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271
Russell King065909b2006-01-04 15:44:16 +00001272# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001273config ISA_DMA_API
1274 bool
Al Viro5cae8412005-05-04 05:39:22 +01001275
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001277 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 help
1279 Find out whether you have a PCI motherboard. PCI is the name of a
1280 bus system, i.e. the way the CPU talks to the other stuff inside
1281 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1282 VESA. If you have PCI, say Y, otherwise N.
1283
Anton Vorontsov52882172010-04-19 13:20:49 +01001284config PCI_DOMAINS
1285 bool
1286 depends on PCI
1287
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001288config PCI_DOMAINS_GENERIC
1289 def_bool PCI_DOMAINS
1290
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001291config PCI_NANOENGINE
1292 bool "BSE nanoEngine PCI support"
1293 depends on SA1100_NANOENGINE
1294 help
1295 Enable PCI on the BSE nanoEngine board.
1296
Matthew Wilcox36e23592007-07-10 10:54:40 -06001297config PCI_SYSCALL
1298 def_bool PCI
1299
Mike Rapoporta0113a92007-11-25 08:55:34 +01001300config PCI_HOST_ITE8152
1301 bool
1302 depends on PCI && MACH_ARMCORE
1303 default y
1304 select DMABOUNCE
1305
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001307source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308
1309source "drivers/pcmcia/Kconfig"
1310
1311endmenu
1312
1313menu "Kernel Features"
1314
Dave Martin3b556582011-12-07 15:38:04 +00001315config HAVE_SMP
1316 bool
1317 help
1318 This option should be selected by machines which have an SMP-
1319 capable CPU.
1320
1321 The only effect of this option is to make the SMP-related
1322 options available to the user for configuration.
1323
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001325 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001326 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001327 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001328 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001329 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 help
1331 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001332 a system with only one CPU, say N. If you have a system with more
1333 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334
Robert Graffham4a474152014-01-23 15:55:29 -08001335 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001337 you say Y here, the kernel will run on many, but not all,
1338 uniprocessor machines. On a uniprocessor machine, the kernel
1339 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
Paul Bolle395cf962011-08-15 02:02:26 +02001341 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001343 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344
1345 If you don't know what to do here, say N.
1346
Russell Kingf00ec482010-09-04 10:47:48 +01001347config SMP_ON_UP
1348 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001349 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001350 default y
1351 help
1352 SMP kernels contain instructions which fail on non-SMP processors.
1353 Enabling this option allows the kernel to modify itself to make
1354 these instructions safe. Disabling it allows about 1K of space
1355 savings.
1356
1357 If you don't know what to do here, say Y.
1358
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001359config ARM_CPU_TOPOLOGY
1360 bool "Support cpu topology definition"
1361 depends on SMP && CPU_V7
1362 default y
1363 help
1364 Support ARM cpu topology definition. The MPIDR register defines
1365 affinity between processors which is then used to describe the cpu
1366 topology of an ARM System.
1367
1368config SCHED_MC
1369 bool "Multi-core scheduler support"
1370 depends on ARM_CPU_TOPOLOGY
1371 help
1372 Multi-core scheduler support improves the CPU scheduler's decision
1373 making when dealing with multi-core CPU chips at a cost of slightly
1374 increased overhead in some places. If unsure say N here.
1375
1376config SCHED_SMT
1377 bool "SMT scheduler support"
1378 depends on ARM_CPU_TOPOLOGY
1379 help
1380 Improves the CPU scheduler's decision making when dealing with
1381 MultiThreading at a cost of slightly increased overhead in some
1382 places. If unsure say N here.
1383
Russell Kinga8cbcd92009-05-16 11:51:14 +01001384config HAVE_ARM_SCU
1385 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001386 help
1387 This option enables support for the ARM system coherency unit
1388
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001389config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001390 bool "Architected timer support"
1391 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001392 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001393 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001394 help
1395 This option enables support for the ARM architected timer
1396
Russell Kingf32f4ce2009-05-16 12:14:21 +01001397config HAVE_ARM_TWD
1398 bool
1399 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001400 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001401 help
1402 This options enables support for the ARM timer and watchdog unit
1403
Nicolas Pitree8db2882012-04-12 02:45:22 -04001404config MCPM
1405 bool "Multi-Cluster Power Management"
1406 depends on CPU_V7 && SMP
1407 help
1408 This option provides the common power management infrastructure
1409 for (multi-)cluster based systems, such as big.LITTLE based
1410 systems.
1411
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001412config MCPM_QUAD_CLUSTER
1413 bool
1414 depends on MCPM
1415 help
1416 To avoid wasting resources unnecessarily, MCPM only supports up
1417 to 2 clusters by default.
1418 Platforms with 3 or 4 clusters that use MCPM must select this
1419 option to allow the additional clusters to be managed.
1420
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001421config BIG_LITTLE
1422 bool "big.LITTLE support (Experimental)"
1423 depends on CPU_V7 && SMP
1424 select MCPM
1425 help
1426 This option enables support selections for the big.LITTLE
1427 system architecture.
1428
1429config BL_SWITCHER
1430 bool "big.LITTLE switcher support"
1431 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001432 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001433 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001434 help
1435 The big.LITTLE "switcher" provides the core functionality to
1436 transparently handle transition between a cluster of A15's
1437 and a cluster of A7's in a big.LITTLE system.
1438
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001439config BL_SWITCHER_DUMMY_IF
1440 tristate "Simple big.LITTLE switcher user interface"
1441 depends on BL_SWITCHER && DEBUG_KERNEL
1442 help
1443 This is a simple and dummy char dev interface to control
1444 the big.LITTLE switcher core code. It is meant for
1445 debugging purposes only.
1446
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001447choice
1448 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001449 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001450 default VMSPLIT_3G
1451 help
1452 Select the desired split between kernel and user memory.
1453
1454 If you are not absolutely sure what you are doing, leave this
1455 option alone!
1456
1457 config VMSPLIT_3G
1458 bool "3G/1G user/kernel split"
1459 config VMSPLIT_2G
1460 bool "2G/2G user/kernel split"
1461 config VMSPLIT_1G
1462 bool "1G/3G user/kernel split"
1463endchoice
1464
1465config PAGE_OFFSET
1466 hex
Russell King006fa252014-02-26 19:40:46 +00001467 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001468 default 0x40000000 if VMSPLIT_1G
1469 default 0x80000000 if VMSPLIT_2G
1470 default 0xC0000000
1471
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472config NR_CPUS
1473 int "Maximum number of CPUs (2-32)"
1474 range 2 32
1475 depends on SMP
1476 default "4"
1477
Russell Kinga054a812005-11-02 22:24:33 +00001478config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001479 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001480 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001481 help
1482 Say Y here to experiment with turning CPUs off and on. CPUs
1483 can be controlled through /sys/devices/system/cpu.
1484
Will Deacon2bdd4242012-12-12 19:20:52 +00001485config ARM_PSCI
1486 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1487 depends on CPU_V7
1488 help
1489 Say Y here if you want Linux to communicate with system firmware
1490 implementing the PSCI specification for CPU-centric power
1491 management operations described in ARM document number ARM DEN
1492 0022A ("Power State Coordination Interface System Software on
1493 ARM processors").
1494
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001495# The GPIO number here must be sorted by descending number. In case of
1496# a multiplatform kernel, we just want the highest value required by the
1497# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001498config ARCH_NR_GPIO
1499 int
Michal Simek6a4d8f32015-01-15 08:42:42 +01001500 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001501 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1502 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001503 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001504 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001505 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001506 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001507 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001508 default 0
1509 help
1510 Maximum number of GPIOs in the system.
1511
1512 If unsure, leave the default value.
1513
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001514source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515
Russell Kingc9218b12013-04-27 23:31:10 +01001516config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001517 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001518 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001519 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001520 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001521 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001522 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001523
1524choice
Russell King47d84682013-09-10 23:47:55 +01001525 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001526 prompt "Timer frequency"
1527
1528config HZ_100
1529 bool "100 Hz"
1530
1531config HZ_200
1532 bool "200 Hz"
1533
1534config HZ_250
1535 bool "250 Hz"
1536
1537config HZ_300
1538 bool "300 Hz"
1539
1540config HZ_500
1541 bool "500 Hz"
1542
1543config HZ_1000
1544 bool "1000 Hz"
1545
1546endchoice
1547
1548config HZ
1549 int
Russell King47d84682013-09-10 23:47:55 +01001550 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001551 default 100 if HZ_100
1552 default 200 if HZ_200
1553 default 250 if HZ_250
1554 default 300 if HZ_300
1555 default 500 if HZ_500
1556 default 1000
1557
1558config SCHED_HRTICK
1559 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001560
Catalin Marinas16c79652009-07-24 12:33:02 +01001561config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001562 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001563 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001564 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001565 select AEABI
1566 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001567 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001568 help
1569 By enabling this option, the kernel will be compiled in
1570 Thumb-2 mode. A compiler/assembler that understand the unified
1571 ARM-Thumb syntax is needed.
1572
1573 If unsure, say N.
1574
Dave Martin6f685c52011-03-03 11:41:12 +01001575config THUMB2_AVOID_R_ARM_THM_JUMP11
1576 bool "Work around buggy Thumb-2 short branch relocations in gas"
1577 depends on THUMB2_KERNEL && MODULES
1578 default y
1579 help
1580 Various binutils versions can resolve Thumb-2 branches to
1581 locally-defined, preemptible global symbols as short-range "b.n"
1582 branch instructions.
1583
1584 This is a problem, because there's no guarantee the final
1585 destination of the symbol, or any candidate locations for a
1586 trampoline, are within range of the branch. For this reason, the
1587 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1588 relocation in modules at all, and it makes little sense to add
1589 support.
1590
1591 The symptom is that the kernel fails with an "unsupported
1592 relocation" error when loading some modules.
1593
1594 Until fixed tools are available, passing
1595 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1596 code which hits this problem, at the cost of a bit of extra runtime
1597 stack usage in some cases.
1598
1599 The problem is described in more detail at:
1600 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1601
1602 Only Thumb-2 kernels are affected.
1603
1604 Unless you are sure your tools don't have this problem, say Y.
1605
Catalin Marinas0becb082009-07-24 12:32:53 +01001606config ARM_ASM_UNIFIED
1607 bool
1608
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001609config AEABI
1610 bool "Use the ARM EABI to compile the kernel"
1611 help
1612 This option allows for the kernel to be compiled using the latest
1613 ARM ABI (aka EABI). This is only useful if you are using a user
1614 space environment that is also compiled with EABI.
1615
1616 Since there are major incompatibilities between the legacy ABI and
1617 EABI, especially with regard to structure member alignment, this
1618 option also changes the kernel syscall calling convention to
1619 disambiguate both ABIs and allow for backward compatibility support
1620 (selected with CONFIG_OABI_COMPAT).
1621
1622 To use this you need GCC version 4.0.0 or later.
1623
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001624config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001625 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001626 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001627 help
1628 This option preserves the old syscall interface along with the
1629 new (ARM EABI) one. It also provides a compatibility layer to
1630 intercept syscalls that have structure arguments which layout
1631 in memory differs between the legacy ABI and the new ARM EABI
1632 (only for non "thumb" binaries). This option adds a tiny
1633 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001634
1635 The seccomp filter system will not be available when this is
1636 selected, since there is no way yet to sensibly distinguish
1637 between calling conventions during filtering.
1638
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001639 If you know you'll be using only pure EABI user space then you
1640 can say N here. If this option is not selected and you attempt
1641 to execute a legacy ABI binary then the result will be
1642 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001643 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001644
Mel Gormaneb335752009-05-13 17:34:48 +01001645config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001646 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001647
Russell King05944d72006-11-30 20:43:51 +00001648config ARCH_SPARSEMEM_ENABLE
1649 bool
1650
Russell King07a2f732008-10-01 21:39:58 +01001651config ARCH_SPARSEMEM_DEFAULT
1652 def_bool ARCH_SPARSEMEM_ENABLE
1653
Russell King05944d72006-11-30 20:43:51 +00001654config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001655 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001656
Will Deacon7b7bf492011-05-19 13:21:14 +01001657config HAVE_ARCH_PFN_VALID
1658 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1659
Steve Capperb8cd51a2014-10-09 15:29:20 -07001660config HAVE_GENERIC_RCU_GUP
1661 def_bool y
1662 depends on ARM_LPAE
1663
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001664config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001665 bool "High Memory Support"
1666 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001667 help
1668 The address space of ARM processors is only 4 Gigabytes large
1669 and it has to accommodate user address space, kernel address
1670 space as well as some memory mapped IO. That means that, if you
1671 have a large amount of physical memory and/or IO, not all of the
1672 memory can be "permanently mapped" by the kernel. The physical
1673 memory that is not permanently mapped is called "high memory".
1674
1675 Depending on the selected kernel/user memory split, minimum
1676 vmalloc space and actual amount of RAM, you may not need this
1677 option which should result in a slightly faster kernel.
1678
1679 If unsure, say n.
1680
Russell King65cec8e2009-08-17 20:02:06 +01001681config HIGHPTE
1682 bool "Allocate 2nd-level pagetables from highmem"
1683 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001684
Jamie Iles1b8873a2010-02-02 20:25:44 +01001685config HW_PERF_EVENTS
1686 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001687 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001688 default y
1689 help
1690 Enable hardware performance counter support for perf events. If
1691 disabled, perf events will use software events only.
1692
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001693config SYS_SUPPORTS_HUGETLBFS
1694 def_bool y
1695 depends on ARM_LPAE
1696
Catalin Marinas8d962502012-07-25 14:39:26 +01001697config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1698 def_bool y
1699 depends on ARM_LPAE
1700
Steven Capper4bfab202013-07-26 14:58:22 +01001701config ARCH_WANT_GENERAL_HUGETLB
1702 def_bool y
1703
Dave Hansen3f22ab22005-06-23 00:07:43 -07001704source "mm/Kconfig"
1705
Magnus Dammc1b2d972010-07-05 10:00:11 +01001706config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001707 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1708 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001709 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001710 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001711 default "11"
1712 help
1713 The kernel memory allocator divides physically contiguous memory
1714 blocks into "zones", where each zone is a power of two number of
1715 pages. This option selects the largest power of two that the kernel
1716 keeps in the memory allocator. If you need to allocate very large
1717 blocks of physically contiguous memory, then you may need to
1718 increase this value.
1719
1720 This config option is actually maximum order plus one. For example,
1721 a value of 11 means that the largest free memory block is 2^10 pages.
1722
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723config ALIGNMENT_TRAP
1724 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001725 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001727 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001728 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001729 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001730 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1731 address divisible by 4. On 32-bit ARM processors, these non-aligned
1732 fetch/store instructions will be emulated in software if you say
1733 here, which has a severe performance impact. This is necessary for
1734 correct operation of some network protocols. With an IP-only
1735 configuration it is safe to say N, otherwise say Y.
1736
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001737config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001738 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1739 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001740 default y if CPU_FEROCEON
1741 help
1742 Implement faster copy_to_user and clear_user methods for CPU
1743 cores where a 8-word STM instruction give significantly higher
1744 memory write throughput than a sequence of individual 32bit stores.
1745
1746 A possible side effect is a slight increase in scheduling latency
1747 between threads sharing the same address space if they invoke
1748 such copy operations with large buffers.
1749
1750 However, if the CPU data cache is using a write-allocate mode,
1751 this option is unlikely to provide any performance gain.
1752
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001753config SECCOMP
1754 bool
1755 prompt "Enable seccomp to safely compute untrusted bytecode"
1756 ---help---
1757 This kernel feature is useful for number crunching applications
1758 that may need to compute untrusted bytecode during their
1759 execution. By using pipes or other transports made available to
1760 the process as file descriptors supporting the read/write
1761 syscalls, it's possible to isolate those applications in
1762 their own address space using seccomp. Once seccomp is
1763 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1764 and the task is only allowed to execute a few safe syscalls
1765 defined by each seccomp mode.
1766
Stefano Stabellini06e62952013-10-15 15:47:14 +00001767config SWIOTLB
1768 def_bool y
1769
1770config IOMMU_HELPER
1771 def_bool SWIOTLB
1772
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001773config XEN_DOM0
1774 def_bool y
1775 depends on XEN
1776
1777config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001778 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001779 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001780 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001781 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001782 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001783 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001784 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001785 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001786 help
1787 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1788
Linus Torvalds1da177e2005-04-16 15:20:36 -07001789endmenu
1790
1791menu "Boot options"
1792
Grant Likely9eb8f672011-04-28 14:27:20 -06001793config USE_OF
1794 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001795 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001796 select OF
1797 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001798 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001799 help
1800 Include support for flattened device tree machine descriptions.
1801
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001802config ATAGS
1803 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1804 default y
1805 help
1806 This is the traditional way of passing data to the kernel at boot
1807 time. If you are solely relying on the flattened device tree (or
1808 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1809 to remove ATAGS support from your kernel binary. If unsure,
1810 leave this to y.
1811
1812config DEPRECATED_PARAM_STRUCT
1813 bool "Provide old way to pass kernel parameters"
1814 depends on ATAGS
1815 help
1816 This was deprecated in 2001 and announced to live on for 5 years.
1817 Some old boot loaders still use this way.
1818
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819# Compressed boot loader in ROM. Yes, we really want to ask about
1820# TEXT and BSS so we preserve their values in the config files.
1821config ZBOOT_ROM_TEXT
1822 hex "Compressed ROM boot loader base address"
1823 default "0"
1824 help
1825 The physical address at which the ROM-able zImage is to be
1826 placed in the target. Platforms which normally make use of
1827 ROM-able zImage formats normally set this to a suitable
1828 value in their defconfig file.
1829
1830 If ZBOOT_ROM is not enabled, this has no effect.
1831
1832config ZBOOT_ROM_BSS
1833 hex "Compressed ROM boot loader BSS address"
1834 default "0"
1835 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001836 The base address of an area of read/write memory in the target
1837 for the ROM-able zImage which must be available while the
1838 decompressor is running. It must be large enough to hold the
1839 entire decompressed kernel plus an additional 128 KiB.
1840 Platforms which normally make use of ROM-able zImage formats
1841 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001842
1843 If ZBOOT_ROM is not enabled, this has no effect.
1844
1845config ZBOOT_ROM
1846 bool "Compressed boot loader in ROM/flash"
1847 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001848 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849 help
1850 Say Y here if you intend to execute your compressed kernel image
1851 (zImage) directly from ROM or flash. If unsure, say N.
1852
Simon Horman090ab3f2011-04-26 06:29:53 +01001853choice
1854 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001855 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001856 default ZBOOT_ROM_NONE
1857 help
1858 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001859 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001860 kernel image to an MMC or SD card and boot the kernel straight
1861 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001862 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001863 rest the kernel image to RAM.
1864
1865config ZBOOT_ROM_NONE
1866 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1867 help
1868 Do not load image from SD or MMC
1869
Simon Hormanf45b1142011-01-11 04:01:08 +01001870config ZBOOT_ROM_MMCIF
1871 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001872 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001873 Load image from MMCIF hardware block.
1874
1875config ZBOOT_ROM_SH_MOBILE_SDHI
1876 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1877 help
1878 Load image from SDHI hardware block
1879
1880endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001881
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001882config ARM_APPENDED_DTB
1883 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001884 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001885 help
1886 With this option, the boot code will look for a device tree binary
1887 (DTB) appended to zImage
1888 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1889
1890 This is meant as a backward compatibility convenience for those
1891 systems with a bootloader that can't be upgraded to accommodate
1892 the documented boot protocol using a device tree.
1893
1894 Beware that there is very little in terms of protection against
1895 this option being confused by leftover garbage in memory that might
1896 look like a DTB header after a reboot if no actual DTB is appended
1897 to zImage. Do not leave this option active in a production kernel
1898 if you don't intend to always append a DTB. Proper passing of the
1899 location into r2 of a bootloader provided DTB is always preferable
1900 to this option.
1901
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001902config ARM_ATAG_DTB_COMPAT
1903 bool "Supplement the appended DTB with traditional ATAG information"
1904 depends on ARM_APPENDED_DTB
1905 help
1906 Some old bootloaders can't be updated to a DTB capable one, yet
1907 they provide ATAGs with memory configuration, the ramdisk address,
1908 the kernel cmdline string, etc. Such information is dynamically
1909 provided by the bootloader and can't always be stored in a static
1910 DTB. To allow a device tree enabled kernel to be used with such
1911 bootloaders, this option allows zImage to extract the information
1912 from the ATAG list and store it at run time into the appended DTB.
1913
Genoud Richardd0f34a12012-06-26 16:37:59 +01001914choice
1915 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1916 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1917
1918config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1919 bool "Use bootloader kernel arguments if available"
1920 help
1921 Uses the command-line options passed by the boot loader instead of
1922 the device tree bootargs property. If the boot loader doesn't provide
1923 any, the device tree bootargs property will be used.
1924
1925config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1926 bool "Extend with bootloader kernel arguments"
1927 help
1928 The command-line arguments provided by the boot loader will be
1929 appended to the the device tree bootargs property.
1930
1931endchoice
1932
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933config CMDLINE
1934 string "Default kernel command string"
1935 default ""
1936 help
1937 On some architectures (EBSA110 and CATS), there is currently no way
1938 for the boot loader to pass arguments to the kernel. For these
1939 architectures, you should supply some command-line options at build
1940 time by entering them here. As a minimum, you should specify the
1941 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1942
Victor Boivie4394c122011-05-04 17:07:55 +01001943choice
1944 prompt "Kernel command line type" if CMDLINE != ""
1945 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001946 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001947
1948config CMDLINE_FROM_BOOTLOADER
1949 bool "Use bootloader kernel arguments if available"
1950 help
1951 Uses the command-line options passed by the boot loader. If
1952 the boot loader doesn't provide any, the default kernel command
1953 string provided in CMDLINE will be used.
1954
1955config CMDLINE_EXTEND
1956 bool "Extend bootloader kernel arguments"
1957 help
1958 The command-line arguments provided by the boot loader will be
1959 appended to the default kernel command string.
1960
Alexander Holler92d20402010-02-16 19:04:53 +01001961config CMDLINE_FORCE
1962 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001963 help
1964 Always use the default kernel command string, even if the boot
1965 loader passes other arguments to the kernel.
1966 This is useful if you cannot or don't want to change the
1967 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001968endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001969
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970config XIP_KERNEL
1971 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001972 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 help
1974 Execute-In-Place allows the kernel to run from non-volatile storage
1975 directly addressable by the CPU, such as NOR flash. This saves RAM
1976 space since the text section of the kernel is not loaded from flash
1977 to RAM. Read-write sections, such as the data section and stack,
1978 are still copied to RAM. The XIP kernel is not compressed since
1979 it has to run directly from flash, so it will take more space to
1980 store it. The flash address used to link the kernel object files,
1981 and for storing it, is configuration dependent. Therefore, if you
1982 say Y here, you must know the proper physical address where to
1983 store the kernel image depending on your own flash memory usage.
1984
1985 Also note that the make target becomes "make xipImage" rather than
1986 "make zImage" or "make Image". The final kernel binary to put in
1987 ROM memory will be arch/arm/boot/xipImage.
1988
1989 If unsure, say N.
1990
1991config XIP_PHYS_ADDR
1992 hex "XIP Kernel Physical Location"
1993 depends on XIP_KERNEL
1994 default "0x00080000"
1995 help
1996 This is the physical address in your flash memory the kernel will
1997 be linked for and stored to. This address is dependent on your
1998 own flash usage.
1999
Richard Purdiec587e4a2007-02-06 21:29:00 +01002000config KEXEC
2001 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002002 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002003 help
2004 kexec is a system call that implements the ability to shutdown your
2005 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002006 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002007 you can start any kernel with it, not just Linux.
2008
2009 It is an ongoing process to be certain the hardware in a machine
2010 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002011 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002012
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002013config ATAGS_PROC
2014 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002015 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002016 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002017 help
2018 Should the atags used to boot the kernel be exported in an "atags"
2019 file in procfs. Useful with kexec.
2020
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002021config CRASH_DUMP
2022 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002023 help
2024 Generate crash dump after being started by kexec. This should
2025 be normally only set in special crash dump kernels which are
2026 loaded in the main kernel with kexec-tools into a specially
2027 reserved region and then later executed after a crash by
2028 kdump/kexec. The crash dump kernel must be compiled to a
2029 memory address not used by the main kernel
2030
2031 For more details see Documentation/kdump/kdump.txt
2032
Eric Miaoe69edc792010-07-05 15:56:50 +02002033config AUTO_ZRELADDR
2034 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002035 help
2036 ZRELADDR is the physical address where the decompressed kernel
2037 image will be placed. If AUTO_ZRELADDR is selected, the address
2038 will be determined at run-time by masking the current IP with
2039 0xf8000000. This assumes the zImage being placed in the first 128MB
2040 from start of memory.
2041
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042endmenu
2043
Russell Kingac9d7ef2008-08-18 17:26:00 +01002044menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002045
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047
Russell Kingac9d7ef2008-08-18 17:26:00 +01002048source "drivers/cpuidle/Kconfig"
2049
2050endmenu
2051
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052menu "Floating point emulation"
2053
2054comment "At least one emulation must be selected"
2055
2056config FPE_NWFPE
2057 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002058 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059 ---help---
2060 Say Y to include the NWFPE floating point emulator in the kernel.
2061 This is necessary to run most binaries. Linux does not currently
2062 support floating point hardware so you need to say Y here even if
2063 your machine has an FPA or floating point co-processor podule.
2064
2065 You may say N here if you are going to load the Acorn FPEmulator
2066 early in the bootup.
2067
2068config FPE_NWFPE_XP
2069 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002070 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071 help
2072 Say Y to include 80-bit support in the kernel floating-point
2073 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2074 Note that gcc does not generate 80-bit operations by default,
2075 so in most cases this option only enlarges the size of the
2076 floating point emulator without any good reason.
2077
2078 You almost surely want to say N here.
2079
2080config FPE_FASTFPE
2081 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002082 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083 ---help---
2084 Say Y here to include the FAST floating point emulator in the kernel.
2085 This is an experimental much faster emulator which now also has full
2086 precision for the mantissa. It does not support any exceptions.
2087 It is very simple, and approximately 3-6 times faster than NWFPE.
2088
2089 It should be sufficient for most programs. It may be not suitable
2090 for scientific calculations, but you have to check this for yourself.
2091 If you do not feel you need a faster FP emulation you should better
2092 choose NWFPE.
2093
2094config VFP
2095 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002096 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 help
2098 Say Y to include VFP support code in the kernel. This is needed
2099 if your hardware includes a VFP unit.
2100
2101 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2102 release notes and additional status information.
2103
2104 Say N if your target does not have VFP hardware.
2105
Catalin Marinas25ebee02007-09-25 15:22:24 +01002106config VFPv3
2107 bool
2108 depends on VFP
2109 default y if CPU_V7
2110
Catalin Marinasb5872db2008-01-10 19:16:17 +01002111config NEON
2112 bool "Advanced SIMD (NEON) Extension support"
2113 depends on VFPv3 && CPU_V7
2114 help
2115 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2116 Extension.
2117
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002118config KERNEL_MODE_NEON
2119 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002120 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002121 help
2122 Say Y to include support for NEON in kernel mode.
2123
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124endmenu
2125
2126menu "Userspace binary formats"
2127
2128source "fs/Kconfig.binfmt"
2129
2130config ARTHUR
2131 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00002132 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133 help
2134 Say Y here to include the kernel code necessary if you want to run
2135 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2136 experimental; if this sounds frightening, say N and sleep in peace.
2137 You can also say M here to compile this support as a module (which
2138 will be called arthur).
2139
2140endmenu
2141
2142menu "Power management options"
2143
Russell Kingeceab4a2005-11-15 11:31:41 +00002144source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002145
Johannes Bergf4cb5702007-12-08 02:14:00 +01002146config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002147 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002148 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002149 def_bool y
2150
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002151config ARM_CPU_SUSPEND
2152 def_bool PM_SLEEP
2153
Sebastian Capella603fb422014-03-25 01:20:29 +01002154config ARCH_HIBERNATION_POSSIBLE
2155 bool
2156 depends on MMU
2157 default y if ARCH_SUSPEND_POSSIBLE
2158
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159endmenu
2160
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002161source "net/Kconfig"
2162
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002163source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164
2165source "fs/Kconfig"
2166
Linus Torvalds1da177e2005-04-16 15:20:36 -07002167source "arch/arm/Kconfig.debug"
2168
2169source "security/Kconfig"
2170
2171source "crypto/Kconfig"
2172
2173source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002174
2175source "arch/arm/kvm/Kconfig"