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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)
Rabin Vincent09f05d82012-02-18 17:52:41 +010032 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060033 select HAVE_ARCH_KGDB
Kees Cook91702172013-11-09 00:51:56 +010034 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010035 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010036 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010037 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010038 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010039 select HAVE_C_RECORDMCOUNT
40 select HAVE_DEBUG_KMEMLEAK
41 select HAVE_DMA_API_DEBUG
42 select HAVE_DMA_ATTRS
43 select HAVE_DMA_CONTIGUOUS if MMU
44 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Will Deacondce5c9e2013-12-17 19:50:16 +010045 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010046 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
47 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
48 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
49 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010050 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
51 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010052 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010053 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070054 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010055 select HAVE_KERNEL_LZMA
56 select HAVE_KERNEL_LZO
57 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010058 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080059 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010060 select HAVE_MEMBLOCK
Russell King171b3f02013-09-12 21:24:42 +010061 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
Russell Kingb1b3f492012-10-06 17:12:25 +010062 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080063 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010064 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010065 select HAVE_PERF_REGS
66 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070067 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010068 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010069 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070070 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070071 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010072 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010073 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040074 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010075 select OLD_SIGACTION
76 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010077 select PERF_USE_VMALLOC
78 select RTC_LIB
79 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010080 # Above selects are sorted alphabetically; please add new ones
81 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 help
83 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000084 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000086 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 Europe. There is an ARM Linux project with a web page at
88 <http://www.arm.linux.org.uk/>.
89
Russell King74facff2011-06-02 11:16:22 +010090config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070091 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010092 bool
93
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020094config NEED_SG_DMA_LENGTH
95 bool
96
97config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020098 bool
Russell Kingb1b3f492012-10-06 17:12:25 +010099 select ARM_HAS_SG_CHAIN
100 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200101
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900102if ARM_DMA_USE_IOMMU
103
104config ARM_DMA_IOMMU_ALIGNMENT
105 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
106 range 4 9
107 default 8
108 help
109 DMA mapping framework by default aligns all buffers to the smallest
110 PAGE_SIZE order which is greater than or equal to the requested buffer
111 size. This works well for buffers up to a few hundreds kilobytes, but
112 for larger buffers it just a waste of address space. Drivers which has
113 relatively small addressing window (like 64Mib) might run out of
114 virtual space with just a few allocations.
115
116 With this parameter you can specify the maximum PAGE_SIZE order for
117 DMA IOMMU buffers. Larger buffers will be aligned only to this
118 specified order. The order is expressed as a power of two multiplied
119 by the PAGE_SIZE.
120
121endif
122
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100123config MIGHT_HAVE_PCI
124 bool
125
Ralf Baechle75e71532007-02-09 17:08:58 +0000126config SYS_SUPPORTS_APM_EMULATION
127 bool
128
Linus Walleijbc581772009-09-15 17:30:37 +0100129config HAVE_TCM
130 bool
131 select GENERIC_ALLOCATOR
132
Russell Kinge119bff2010-01-10 17:23:29 +0000133config HAVE_PROC_CPU
134 bool
135
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700136config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000137 bool
Al Viro5ea81762007-02-11 15:41:31 +0000138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139config EISA
140 bool
141 ---help---
142 The Extended Industry Standard Architecture (EISA) bus was
143 developed as an open alternative to the IBM MicroChannel bus.
144
145 The EISA bus provided some of the features of the IBM MicroChannel
146 bus while maintaining backward compatibility with cards made for
147 the older ISA bus. The EISA bus saw limited use between 1988 and
148 1995 when it was made obsolete by the PCI bus.
149
150 Say Y here if you are building a kernel for an EISA-based machine.
151
152 Otherwise, say N.
153
154config SBUS
155 bool
156
Russell Kingf16fb1e2007-04-28 09:59:37 +0100157config STACKTRACE_SUPPORT
158 bool
159 default y
160
Nicolas Pitref76e9152008-04-24 01:31:46 -0400161config HAVE_LATENCYTOP_SUPPORT
162 bool
163 depends on !SMP
164 default y
165
Russell Kingf16fb1e2007-04-28 09:59:37 +0100166config LOCKDEP_SUPPORT
167 bool
168 default y
169
Russell King7ad1bcb2006-08-27 12:07:02 +0100170config TRACE_IRQFLAGS_SUPPORT
171 bool
172 default y
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174config RWSEM_XCHGADD_ALGORITHM
175 bool
Will Deacon8a874112014-05-02 17:06:19 +0100176 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
David Howellsf0d1b0b2006-12-08 02:37:49 -0800178config ARCH_HAS_ILOG2_U32
179 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800180
181config ARCH_HAS_ILOG2_U64
182 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800183
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100184config ARCH_HAS_BANDGAP
185 bool
186
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800187config GENERIC_HWEIGHT
188 bool
189 default y
190
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191config GENERIC_CALIBRATE_DELAY
192 bool
193 default y
194
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100195config ARCH_MAY_HAVE_PC_FDC
196 bool
197
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800198config ZONE_DMA
199 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800200
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800201config NEED_DMA_MAP_STATE
202 def_bool y
203
David A. Longc7edc9e2014-03-07 11:23:04 -0500204config ARCH_SUPPORTS_UPROBES
205 def_bool y
206
Rob Herring58af4a22012-03-20 14:33:01 -0500207config ARCH_HAS_DMA_SET_COHERENT_MASK
208 bool
209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210config GENERIC_ISA_DMA
211 bool
212
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213config FIQ
214 bool
215
Rob Herring13a50452012-02-07 09:28:22 -0600216config NEED_RET_TO_USER
217 bool
218
Al Viro034d2f52005-12-19 16:27:59 -0500219config ARCH_MTD_XIP
220 bool
221
Hyok S. Choic760fc12006-03-27 15:18:50 +0100222config VECTORS_BASE
223 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900224 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100225 default DRAM_BASE if REMAP_VECTORS_TO_RAM
226 default 0x00000000
227 help
Russell King19accfd2013-07-04 11:40:32 +0100228 The base address of exception vectors. This must be two pages
229 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100230
Russell Kingdc21af92011-01-04 19:09:43 +0000231config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100232 bool "Patch physical to virtual translations at runtime" if EMBEDDED
233 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100234 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000235 depends on !ARCH_REALVIEW || !SPARSEMEM
236 help
Russell King111e9a52011-05-12 10:02:42 +0100237 Patch phys-to-virt and virt-to-phys translation functions at
238 boot and module load time according to the position of the
239 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000240
Russell King111e9a52011-05-12 10:02:42 +0100241 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100242 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000243
Russell Kingc1beced2011-08-10 10:23:45 +0100244 Only disable this option if you know that you do not require
245 this feature (eg, building a kernel for a single machine) and
246 you need to shrink the kernel to the minimal size.
247
Rob Herringc334bc12012-03-04 22:03:33 -0600248config NEED_MACH_IO_H
249 bool
250 help
251 Select this when mach/io.h is required to provide special
252 definitions for this platform. The need for mach/io.h should
253 be avoided when possible.
254
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400255config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400256 bool
Russell King111e9a52011-05-12 10:02:42 +0100257 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400258 Select this when mach/memory.h is required to provide special
259 definitions for this platform. The need for mach/memory.h should
260 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400261
262config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100263 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100264 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100265 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100266 default 0x00000000 if ARCH_EBSA110 || \
267 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
268 ARCH_FOOTBRIDGE || \
269 ARCH_INTEGRATOR || \
270 ARCH_IOP13XX || \
271 ARCH_KS8695 || \
272 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
273 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
274 default 0x20000000 if ARCH_S5PV210
275 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
276 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
277 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
278 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
279 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400280 help
281 Please provide the physical address corresponding to the
282 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000283
Simon Glass87e040b2011-08-16 23:44:26 +0100284config GENERIC_BUG
285 def_bool y
286 depends on BUG
287
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288source "init/Kconfig"
289
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700290source "kernel/Kconfig.freezer"
291
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292menu "System Type"
293
Hyok S. Choi3c427972009-07-24 12:35:00 +0100294config MMU
295 bool "MMU-based Paged Memory Management Support"
296 default y
297 help
298 Select if you want MMU-based virtualised addressing space
299 support by paged memory management. If unsure, say 'Y'.
300
Russell Kingccf50e22010-03-15 19:03:06 +0000301#
302# The "ARM system type" choice list is ordered alphabetically by option
303# text. Please add new entries in the option alphabetic order.
304#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305choice
306 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100307 default ARCH_VERSATILE if !MMU
308 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
Rob Herring387798b2012-09-06 13:41:12 -0500310config ARCH_MULTIPLATFORM
311 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100312 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600313 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700314 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500315 select ARM_PATCH_PHYS_VIRT
316 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500317 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600318 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600319 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100320 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500321 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600322 select SPARSE_IRQ
323 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600324
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100325config ARCH_REALVIEW
326 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100327 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100328 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100329 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200330 select COMMON_CLK
331 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100332 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100333 select GPIO_PL061 if GPIOLIB
334 select ICST
335 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000336 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000337 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100338 help
339 This enables support for ARM Ltd RealView boards.
340
341config ARCH_VERSATILE
342 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100343 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100344 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100345 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100346 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100347 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100348 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900349 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000350 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000351 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100352 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000353 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100354 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100355 help
356 This enables support for ARM Ltd Versatile board.
357
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100358config ARCH_AT91
359 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100360 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100361 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100362 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500363 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800364 select PINCTRL
Nicolas Ferred48346c2014-11-21 16:41:50 +0100365 select PINCTRL_AT91
366 select USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100367 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100368 This enables support for systems based on Atmel
Nicolas Ferre32963a82014-11-21 16:44:31 +0100369 AT91RM9200, AT91SAM9 and SAMA5 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100370
Russell King93e22562012-10-12 14:20:52 +0100371config ARCH_CLPS711X
372 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400373 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400374 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400375 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100376 select COMMON_CLK
377 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400378 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400379 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400380 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100381 help
382 Support for Cirrus Logic 711x/721x/731x based boards.
383
Russell King788c9702009-04-26 14:21:59 +0100384config ARCH_GEMINI
385 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100386 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200387 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100388 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200389 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100390 help
391 Support for the Cortina Systems Gemini family SoCs
392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393config ARCH_EBSA110
394 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100395 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000396 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100397 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600398 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400399 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700400 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 help
402 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000403 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 Ethernet interface, two PCMCIA sockets, two serial ports and a
405 parallel port.
406
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100407config ARCH_EFM32
408 bool "Energy Micro efm32"
409 depends on !MMU
410 select ARCH_REQUIRE_GPIOLIB
411 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100412 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100413 select CLKSRC_OF
414 select COMMON_CLK
415 select CPU_V7M
416 select GENERIC_CLOCKEVENTS
417 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700418 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100419 select SPARSE_IRQ
420 select USE_OF
421 help
422 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
423 processors.
424
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000425config ARCH_EP93XX
426 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100427 select ARCH_HAS_HOLES_MEMORYMODEL
428 select ARCH_REQUIRE_GPIOLIB
429 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000430 select ARM_AMBA
431 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100432 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100433 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000434 help
435 This enables support for the Cirrus EP93xx series of CPUs.
436
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437config ARCH_FOOTBRIDGE
438 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000439 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000441 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200442 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600443 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400444 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000445 help
446 Support for systems based on the DC21285 companion chip
447 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100449config ARCH_NETX
450 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100451 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100452 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000453 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100454 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000455 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100456 This enables support for systems based on the Hilscher NetX Soc
457
Russell King3b938be2007-05-12 11:25:44 +0100458config ARCH_IOP13XX
459 bool "IOP13xx-based"
460 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100461 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400462 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600463 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100464 select PCI
465 select PLAT_IOP
466 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000467 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100468 help
469 Support for Intel's IOP13XX (XScale) family of processors.
470
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100471config ARCH_IOP32X
472 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100473 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100474 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000475 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200476 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600477 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100478 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100479 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000480 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100481 Support for Intel's 80219 and IOP32X (XScale) family of
482 processors.
483
484config ARCH_IOP33X
485 bool "IOP33x-based"
486 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100487 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000488 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200489 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600490 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100491 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100492 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100493 help
494 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
Russell King3b938be2007-05-12 11:25:44 +0100496config ARCH_IXP4XX
497 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100498 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500499 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100500 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100501 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100502 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000503 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100504 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100505 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100506 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600507 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200508 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100509 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100510 help
Russell King3b938be2007-05-12 11:25:44 +0100511 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100512
Saeed Bisharaedabd382009-08-06 15:12:43 +0300513config ARCH_DOVE
514 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300515 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100516 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300517 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100518 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100519 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100520 select PINCTRL
521 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200522 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300523 help
524 Support for the Marvell Dove SoC 88AP510
525
Russell King788c9702009-04-26 14:21:59 +0100526config ARCH_MV78XX0
527 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700528 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100529 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100530 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100531 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100532 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200533 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100534 help
535 Support for the following Marvell MV78xx0 series SoCs:
536 MV781x0, MV782x0.
537
538config ARCH_ORION5X
539 bool "Marvell Orion"
540 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700541 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100542 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100543 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100544 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100545 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200546 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100547 help
548 Support for the following Marvell Orion 5x series SoCs:
549 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
550 Orion-2 (5281), Orion-1-90 (6183).
551
552config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500553 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100554 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100555 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100556 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100557 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100558 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800559 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800560 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800561 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800562 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100563 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400564 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100565 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500566 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100567
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100568config ARCH_KS8695
569 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100570 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200571 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100572 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200573 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100574 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100575 help
576 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
577 System-on-Chip devices.
578
Russell King788c9702009-04-26 14:21:59 +0100579config ARCH_W90X900
580 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100581 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100582 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100583 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100584 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100585 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200586 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100587 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
588 At present, the w90x900 has been renamed nuc900, regarding
589 the ARM series product line, you can login the following
590 link address to know more.
591
592 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
593 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400594
Russell King93e22562012-10-12 14:20:52 +0100595config ARCH_LPC32XX
596 bool "NXP LPC32XX"
597 select ARCH_REQUIRE_GPIOLIB
598 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000599 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100600 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100601 select CPU_ARM926T
602 select GENERIC_CLOCKEVENTS
603 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100604 select USE_OF
605 help
606 Support for the NXP LPC32XX family of processors
607
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700609 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100610 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100611 select ARCH_MTD_XIP
612 select ARCH_REQUIRE_GPIOLIB
613 select ARM_CPU_SUSPEND if PM
614 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100615 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100616 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200617 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100618 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800619 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100620 select HAVE_IDE
621 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800622 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800623 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000624 help
eric miao2c8086a2007-09-11 19:13:17 -0700625 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600627config ARCH_MSM
628 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700629 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700630 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100631 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800632 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800633 Support for Qualcomm MSM/QSD based systems. This runs on the
634 apps processor of the MSM/QSD and depends on a shared memory
635 interface to the modem processor which runs the baseband
636 stack and controls some vital subsystems
637 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800638
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100639config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100640 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100641 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100642 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900643 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900644 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100645 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800646 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800647 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900648 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000649 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000650 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000651 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700652 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200653 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100654 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900655 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100656 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000657 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100658 Support for Renesas ARM SoC platforms using a non-multiplatform
659 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
660 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000661
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662config ARCH_RPC
663 bool "RiscPC"
664 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100665 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100666 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000667 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100668 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100669 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200670 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100671 select HAVE_PATA_PLATFORM
672 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600673 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400674 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700675 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100676 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 help
678 On the Acorn Risc-PC, Linux can support the internal IDE disk and
679 CD-ROM interface, serial and parallel port, and the floppy drive.
680
681config ARCH_SA1100
682 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100683 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700684 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100685 select ARCH_SPARSEMEM_ENABLE
686 select CLKDEV_LOOKUP
687 select CLKSRC_MMIO
688 select CPU_FREQ
689 select CPU_SA1100
690 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200691 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100692 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100693 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100694 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400695 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100696 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000697 help
698 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900700config ARCH_S3C24XX
701 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900702 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100703 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100704 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200705 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800706 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900707 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900708 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900709 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100710 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900711 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600712 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900713 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900715 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
716 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
717 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
718 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900719
Ben Dooksa08ab632008-10-21 14:06:39 +0100720config ARCH_S3C64XX
721 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900722 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200723 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100724 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100725 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100726 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200727 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900728 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900729 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800730 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900731 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900732 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900733 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100734 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700735 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100736 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100737 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100738 select S3C_DEV_NAND
739 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900740 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900741 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900742 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100743 help
744 Samsung S3C64XX series based systems
745
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100746config ARCH_DAVINCI
747 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100748 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700749 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100750 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700751 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100752 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100753 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100754 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500755 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530756 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100757 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100758 help
759 Support for TI's DaVinci platform.
760
Tony Lindgrena0694862013-01-11 11:24:20 -0800761config ARCH_OMAP1
762 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600763 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100764 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800765 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100766 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200767 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100768 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100769 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800770 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800771 select HAVE_IDE
772 select IRQ_DOMAIN
773 select NEED_MACH_IO_H if PCCARD
774 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100775 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800776 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800777
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778endchoice
779
Rob Herring387798b2012-09-06 13:41:12 -0500780menu "Multiple platform selection"
781 depends on ARCH_MULTIPLATFORM
782
783comment "CPU Core family selection"
784
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100785config ARCH_MULTI_V4
786 bool "ARMv4 based platforms (FA526)"
787 depends on !ARCH_MULTI_V6_V7
788 select ARCH_MULTI_V4_V5
789 select CPU_FA526
790
Rob Herring387798b2012-09-06 13:41:12 -0500791config ARCH_MULTI_V4T
792 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500793 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100794 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200795 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
796 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
797 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500798
799config ARCH_MULTI_V5
800 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500801 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100802 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100803 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200804 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
805 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500806
807config ARCH_MULTI_V4_V5
808 bool
809
810config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800811 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500812 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600813 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500814
815config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800816 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500817 default y
818 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100819 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600820 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500821
822config ARCH_MULTI_V6_V7
823 bool
Rob Herring9352b052014-01-31 15:36:10 -0600824 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500825
826config ARCH_MULTI_CPU_AUTO
827 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
828 select ARCH_MULTI_V5
829
830endmenu
831
Rob Herring05e2a3d2013-12-05 10:04:54 -0600832config ARCH_VIRT
833 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600834 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600835 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600836 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600837 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600838
Russell Kingccf50e22010-03-15 19:03:06 +0000839#
840# This is sorted alphabetically by mach-* pathname. However, plat-*
841# Kconfigs may be included either alphabetically (according to the
842# plat- suffix) or along side the corresponding mach-* source.
843#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200844source "arch/arm/mach-mvebu/Kconfig"
845
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100846source "arch/arm/mach-asm9260/Kconfig"
847
Russell King95b8f202010-01-14 11:43:54 +0000848source "arch/arm/mach-at91/Kconfig"
849
Anders Berg1d22924e2014-05-23 11:08:35 +0200850source "arch/arm/mach-axxia/Kconfig"
851
Christian Daudt8ac49e02012-11-19 09:46:10 -0800852source "arch/arm/mach-bcm/Kconfig"
853
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200854source "arch/arm/mach-berlin/Kconfig"
855
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856source "arch/arm/mach-clps711x/Kconfig"
857
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300858source "arch/arm/mach-cns3xxx/Kconfig"
859
Russell King95b8f202010-01-14 11:43:54 +0000860source "arch/arm/mach-davinci/Kconfig"
861
862source "arch/arm/mach-dove/Kconfig"
863
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000864source "arch/arm/mach-ep93xx/Kconfig"
865
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866source "arch/arm/mach-footbridge/Kconfig"
867
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200868source "arch/arm/mach-gemini/Kconfig"
869
Rob Herring387798b2012-09-06 13:41:12 -0500870source "arch/arm/mach-highbank/Kconfig"
871
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800872source "arch/arm/mach-hisi/Kconfig"
873
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874source "arch/arm/mach-integrator/Kconfig"
875
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100876source "arch/arm/mach-iop32x/Kconfig"
877
878source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879
Dan Williams285f5fa2006-12-07 02:59:39 +0100880source "arch/arm/mach-iop13xx/Kconfig"
881
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882source "arch/arm/mach-ixp4xx/Kconfig"
883
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400884source "arch/arm/mach-keystone/Kconfig"
885
Russell King95b8f202010-01-14 11:43:54 +0000886source "arch/arm/mach-ks8695/Kconfig"
887
Carlo Caione3b8f5032014-09-10 22:16:59 +0200888source "arch/arm/mach-meson/Kconfig"
889
Russell King95b8f202010-01-14 11:43:54 +0000890source "arch/arm/mach-msm/Kconfig"
891
Jonas Jensen17723fd32013-12-18 13:58:45 +0100892source "arch/arm/mach-moxart/Kconfig"
893
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200894source "arch/arm/mach-mv78xx0/Kconfig"
895
Shawn Guo3995eb82012-09-13 19:48:07 +0800896source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
Matthias Bruggerf682a212014-05-13 01:06:13 +0200898source "arch/arm/mach-mediatek/Kconfig"
899
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800900source "arch/arm/mach-mxs/Kconfig"
901
Russell King95b8f202010-01-14 11:43:54 +0000902source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800903
Russell King95b8f202010-01-14 11:43:54 +0000904source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000905
Daniel Tang9851ca52013-06-11 18:40:17 +1000906source "arch/arm/mach-nspire/Kconfig"
907
Tony Lindgrend48af152005-07-10 19:58:17 +0100908source "arch/arm/plat-omap/Kconfig"
909
910source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911
Tony Lindgren1dbae812005-11-10 14:26:51 +0000912source "arch/arm/mach-omap2/Kconfig"
913
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400914source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400915
Rob Herring387798b2012-09-06 13:41:12 -0500916source "arch/arm/mach-picoxcell/Kconfig"
917
Russell King95b8f202010-01-14 11:43:54 +0000918source "arch/arm/mach-pxa/Kconfig"
919source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
Russell King95b8f202010-01-14 11:43:54 +0000921source "arch/arm/mach-mmp/Kconfig"
922
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600923source "arch/arm/mach-qcom/Kconfig"
924
Russell King95b8f202010-01-14 11:43:54 +0000925source "arch/arm/mach-realview/Kconfig"
926
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200927source "arch/arm/mach-rockchip/Kconfig"
928
Russell King95b8f202010-01-14 11:43:54 +0000929source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300930
Rob Herring387798b2012-09-06 13:41:12 -0500931source "arch/arm/mach-socfpga/Kconfig"
932
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100933source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100934
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100935source "arch/arm/mach-sti/Kconfig"
936
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900937source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938
Ben Dooks431107e2010-01-26 10:11:04 +0900939source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100940
Kukjin Kim170f4e42010-02-24 16:40:44 +0900941source "arch/arm/mach-s5pv210/Kconfig"
942
Kukjin Kim83014572011-11-06 13:54:56 +0900943source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500944source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900945
Russell King882d01f2010-03-02 23:40:15 +0000946source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947
Maxime Ripard3b526342012-11-08 12:40:16 +0100948source "arch/arm/mach-sunxi/Kconfig"
949
Barry Song156a0992012-08-23 13:41:58 +0800950source "arch/arm/mach-prima2/Kconfig"
951
Erik Gillingc5f80062010-01-21 16:53:02 -0800952source "arch/arm/mach-tegra/Kconfig"
953
Russell King95b8f202010-01-14 11:43:54 +0000954source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955
Russell King95b8f202010-01-14 11:43:54 +0000956source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957
958source "arch/arm/mach-versatile/Kconfig"
959
Russell Kingceade892010-02-11 21:44:53 +0000960source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000961source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000962
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300963source "arch/arm/mach-vt8500/Kconfig"
964
wanzongshun7ec80dd2008-12-03 03:55:38 +0100965source "arch/arm/mach-w90x900/Kconfig"
966
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600967source "arch/arm/mach-zynq/Kconfig"
968
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969# Definitions to make life easier
970config ARCH_ACORN
971 bool
972
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100973config PLAT_IOP
974 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700975 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100976
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400977config PLAT_ORION
978 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100979 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100980 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100981 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200982 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400983
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200984config PLAT_ORION_LEGACY
985 bool
986 select PLAT_ORION
987
Eric Miaobd5ce432009-01-20 12:06:01 +0800988config PLAT_PXA
989 bool
990
Russell Kingf4b8b312010-01-14 12:48:06 +0000991config PLAT_VERSATILE
992 bool
993
Russell Kinge3887712010-01-14 13:30:16 +0000994config ARM_TIMER_SP804
995 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100996 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -0500997 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +0000998
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900999source "arch/arm/firmware/Kconfig"
1000
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001source arch/arm/mm/Kconfig
1002
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001003config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001004 bool "Enable iWMMXt support"
1005 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1006 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001007 help
1008 Enable support for iWMMXt context switching at run time if
1009 running on a CPU that supports it.
1010
eric miao52108642010-12-13 09:42:34 +01001011config MULTI_IRQ_HANDLER
1012 bool
1013 help
1014 Allow each machine to specify it's own IRQ handler at run time.
1015
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001016if !MMU
1017source "arch/arm/Kconfig-nommu"
1018endif
1019
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001020config PJ4B_ERRATA_4742
1021 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1022 depends on CPU_PJ4B && MACH_ARMADA_370
1023 default y
1024 help
1025 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1026 Event (WFE) IDLE states, a specific timing sensitivity exists between
1027 the retiring WFI/WFE instructions and the newly issued subsequent
1028 instructions. This sensitivity can result in a CPU hang scenario.
1029 Workaround:
1030 The software must insert either a Data Synchronization Barrier (DSB)
1031 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1032 instruction
1033
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001034config ARM_ERRATA_326103
1035 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1036 depends on CPU_V6
1037 help
1038 Executing a SWP instruction to read-only memory does not set bit 11
1039 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1040 treat the access as a read, preventing a COW from occurring and
1041 causing the faulting task to livelock.
1042
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001043config ARM_ERRATA_411920
1044 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001045 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001046 help
1047 Invalidation of the Instruction Cache operation can
1048 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1049 It does not affect the MPCore. This option enables the ARM Ltd.
1050 recommended workaround.
1051
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001052config ARM_ERRATA_430973
1053 bool "ARM errata: Stale prediction on replaced interworking branch"
1054 depends on CPU_V7
1055 help
1056 This option enables the workaround for the 430973 Cortex-A8
1057 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1058 interworking branch is replaced with another code sequence at the
1059 same virtual address, whether due to self-modifying code or virtual
1060 to physical address re-mapping, Cortex-A8 does not recover from the
1061 stale interworking branch prediction. This results in Cortex-A8
1062 executing the new code sequence in the incorrect ARM or Thumb state.
1063 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1064 and also flushes the branch target cache at every context switch.
1065 Note that setting specific bits in the ACTLR register may not be
1066 available in non-secure mode.
1067
Catalin Marinas855c5512009-04-30 17:06:15 +01001068config ARM_ERRATA_458693
1069 bool "ARM errata: Processor deadlock when a false hazard is created"
1070 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001071 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001072 help
1073 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1074 erratum. For very specific sequences of memory operations, it is
1075 possible for a hazard condition intended for a cache line to instead
1076 be incorrectly associated with a different cache line. This false
1077 hazard might then cause a processor deadlock. The workaround enables
1078 the L1 caching of the NEON accesses and disables the PLD instruction
1079 in the ACTLR register. Note that setting specific bits in the ACTLR
1080 register may not be available in non-secure mode.
1081
Catalin Marinas0516e462009-04-30 17:06:20 +01001082config ARM_ERRATA_460075
1083 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1084 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001085 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001086 help
1087 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1088 erratum. Any asynchronous access to the L2 cache may encounter a
1089 situation in which recent store transactions to the L2 cache are lost
1090 and overwritten with stale memory contents from external memory. The
1091 workaround disables the write-allocate mode for the L2 cache via the
1092 ACTLR register. Note that setting specific bits in the ACTLR register
1093 may not be available in non-secure mode.
1094
Will Deacon9f050272010-09-14 09:51:43 +01001095config ARM_ERRATA_742230
1096 bool "ARM errata: DMB operation may be faulty"
1097 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001098 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001099 help
1100 This option enables the workaround for the 742230 Cortex-A9
1101 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1102 between two write operations may not ensure the correct visibility
1103 ordering of the two writes. This workaround sets a specific bit in
1104 the diagnostic register of the Cortex-A9 which causes the DMB
1105 instruction to behave as a DSB, ensuring the correct behaviour of
1106 the two writes.
1107
Will Deacona672e992010-09-14 09:53:02 +01001108config ARM_ERRATA_742231
1109 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1110 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001111 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001112 help
1113 This option enables the workaround for the 742231 Cortex-A9
1114 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1115 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1116 accessing some data located in the same cache line, may get corrupted
1117 data due to bad handling of the address hazard when the line gets
1118 replaced from one of the CPUs at the same time as another CPU is
1119 accessing it. This workaround sets specific bits in the diagnostic
1120 register of the Cortex-A9 which reduces the linefill issuing
1121 capabilities of the processor.
1122
Jon Medhurst69155792013-06-07 10:35:35 +01001123config ARM_ERRATA_643719
1124 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1125 depends on CPU_V7 && SMP
1126 help
1127 This option enables the workaround for the 643719 Cortex-A9 (prior to
1128 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1129 register returns zero when it should return one. The workaround
1130 corrects this value, ensuring cache maintenance operations which use
1131 it behave as intended and avoiding data corruption.
1132
Will Deaconcdf357f2010-08-05 11:20:51 +01001133config ARM_ERRATA_720789
1134 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001135 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001136 help
1137 This option enables the workaround for the 720789 Cortex-A9 (prior to
1138 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1139 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1140 As a consequence of this erratum, some TLB entries which should be
1141 invalidated are not, resulting in an incoherency in the system page
1142 tables. The workaround changes the TLB flushing routines to invalidate
1143 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001144
1145config ARM_ERRATA_743622
1146 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1147 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001148 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001149 help
1150 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001151 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001152 optimisation in the Cortex-A9 Store Buffer may lead to data
1153 corruption. This workaround sets a specific bit in the diagnostic
1154 register of the Cortex-A9 which disables the Store Buffer
1155 optimisation, preventing the defect from occurring. This has no
1156 visible impact on the overall performance or power consumption of the
1157 processor.
1158
Will Deacon9a27c272011-02-18 16:36:35 +01001159config ARM_ERRATA_751472
1160 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001161 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001162 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001163 help
1164 This option enables the workaround for the 751472 Cortex-A9 (prior
1165 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1166 completion of a following broadcasted operation if the second
1167 operation is received by a CPU before the ICIALLUIS has completed,
1168 potentially leading to corrupted entries in the cache or TLB.
1169
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001170config ARM_ERRATA_754322
1171 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1172 depends on CPU_V7
1173 help
1174 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1175 r3p*) erratum. A speculative memory access may cause a page table walk
1176 which starts prior to an ASID switch but completes afterwards. This
1177 can populate the micro-TLB with a stale entry which may be hit with
1178 the new ASID. This workaround places two dsb instructions in the mm
1179 switching code so that no page table walks can cross the ASID switch.
1180
Will Deacon5dab26a2011-03-04 12:38:54 +01001181config ARM_ERRATA_754327
1182 bool "ARM errata: no automatic Store Buffer drain"
1183 depends on CPU_V7 && SMP
1184 help
1185 This option enables the workaround for the 754327 Cortex-A9 (prior to
1186 r2p0) erratum. The Store Buffer does not have any automatic draining
1187 mechanism and therefore a livelock may occur if an external agent
1188 continuously polls a memory location waiting to observe an update.
1189 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1190 written polling loops from denying visibility of updates to memory.
1191
Catalin Marinas145e10e2011-08-15 11:04:41 +01001192config ARM_ERRATA_364296
1193 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001194 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001195 help
1196 This options enables the workaround for the 364296 ARM1136
1197 r0p2 erratum (possible cache data corruption with
1198 hit-under-miss enabled). It sets the undocumented bit 31 in
1199 the auxiliary control register and the FI bit in the control
1200 register, thus disabling hit-under-miss without putting the
1201 processor into full low interrupt latency mode. ARM11MPCore
1202 is not affected.
1203
Will Deaconf630c1b2011-09-15 11:45:15 +01001204config ARM_ERRATA_764369
1205 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1206 depends on CPU_V7 && SMP
1207 help
1208 This option enables the workaround for erratum 764369
1209 affecting Cortex-A9 MPCore with two or more processors (all
1210 current revisions). Under certain timing circumstances, a data
1211 cache line maintenance operation by MVA targeting an Inner
1212 Shareable memory region may fail to proceed up to either the
1213 Point of Coherency or to the Point of Unification of the
1214 system. This workaround adds a DSB instruction before the
1215 relevant cache maintenance functions and sets a specific bit
1216 in the diagnostic control register of the SCU.
1217
Simon Horman7253b852012-09-28 02:12:45 +01001218config ARM_ERRATA_775420
1219 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1220 depends on CPU_V7
1221 help
1222 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1223 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1224 operation aborts with MMU exception, it might cause the processor
1225 to deadlock. This workaround puts DSB before executing ISB if
1226 an abort may occur on cache maintenance.
1227
Catalin Marinas93dc6882013-03-26 23:35:04 +01001228config ARM_ERRATA_798181
1229 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1230 depends on CPU_V7 && SMP
1231 help
1232 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1233 adequately shooting down all use of the old entries. This
1234 option enables the Linux kernel workaround for this erratum
1235 which sends an IPI to the CPUs that are running the same ASID
1236 as the one being invalidated.
1237
Will Deacon84b65042013-08-20 17:29:55 +01001238config ARM_ERRATA_773022
1239 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1240 depends on CPU_V7
1241 help
1242 This option enables the workaround for the 773022 Cortex-A15
1243 (up to r0p4) erratum. In certain rare sequences of code, the
1244 loop buffer may deliver incorrect instructions. This
1245 workaround disables the loop buffer to avoid the erratum.
1246
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247endmenu
1248
1249source "arch/arm/common/Kconfig"
1250
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251menu "Bus support"
1252
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253config ISA
1254 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 help
1256 Find out whether you have ISA slots on your motherboard. ISA is the
1257 name of a bus system, i.e. the way the CPU talks to the other stuff
1258 inside your box. Other bus systems are PCI, EISA, MicroChannel
1259 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1260 newer boards don't support it. If you have ISA, say Y, otherwise N.
1261
Russell King065909b2006-01-04 15:44:16 +00001262# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263config ISA_DMA
1264 bool
Russell King065909b2006-01-04 15:44:16 +00001265 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266
Russell King065909b2006-01-04 15:44:16 +00001267# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001268config ISA_DMA_API
1269 bool
Al Viro5cae8412005-05-04 05:39:22 +01001270
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001272 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 help
1274 Find out whether you have a PCI motherboard. PCI is the name of a
1275 bus system, i.e. the way the CPU talks to the other stuff inside
1276 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1277 VESA. If you have PCI, say Y, otherwise N.
1278
Anton Vorontsov52882172010-04-19 13:20:49 +01001279config PCI_DOMAINS
1280 bool
1281 depends on PCI
1282
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001283config PCI_NANOENGINE
1284 bool "BSE nanoEngine PCI support"
1285 depends on SA1100_NANOENGINE
1286 help
1287 Enable PCI on the BSE nanoEngine board.
1288
Matthew Wilcox36e23592007-07-10 10:54:40 -06001289config PCI_SYSCALL
1290 def_bool PCI
1291
Mike Rapoporta0113a92007-11-25 08:55:34 +01001292config PCI_HOST_ITE8152
1293 bool
1294 depends on PCI && MACH_ARMCORE
1295 default y
1296 select DMABOUNCE
1297
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001299source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300
1301source "drivers/pcmcia/Kconfig"
1302
1303endmenu
1304
1305menu "Kernel Features"
1306
Dave Martin3b556582011-12-07 15:38:04 +00001307config HAVE_SMP
1308 bool
1309 help
1310 This option should be selected by machines which have an SMP-
1311 capable CPU.
1312
1313 The only effect of this option is to make the SMP-related
1314 options available to the user for configuration.
1315
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001317 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001318 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001319 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001320 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001321 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 help
1323 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001324 a system with only one CPU, say N. If you have a system with more
1325 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326
Robert Graffham4a474152014-01-23 15:55:29 -08001327 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001329 you say Y here, the kernel will run on many, but not all,
1330 uniprocessor machines. On a uniprocessor machine, the kernel
1331 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332
Paul Bolle395cf962011-08-15 02:02:26 +02001333 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001335 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336
1337 If you don't know what to do here, say N.
1338
Russell Kingf00ec482010-09-04 10:47:48 +01001339config SMP_ON_UP
1340 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001341 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001342 default y
1343 help
1344 SMP kernels contain instructions which fail on non-SMP processors.
1345 Enabling this option allows the kernel to modify itself to make
1346 these instructions safe. Disabling it allows about 1K of space
1347 savings.
1348
1349 If you don't know what to do here, say Y.
1350
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001351config ARM_CPU_TOPOLOGY
1352 bool "Support cpu topology definition"
1353 depends on SMP && CPU_V7
1354 default y
1355 help
1356 Support ARM cpu topology definition. The MPIDR register defines
1357 affinity between processors which is then used to describe the cpu
1358 topology of an ARM System.
1359
1360config SCHED_MC
1361 bool "Multi-core scheduler support"
1362 depends on ARM_CPU_TOPOLOGY
1363 help
1364 Multi-core scheduler support improves the CPU scheduler's decision
1365 making when dealing with multi-core CPU chips at a cost of slightly
1366 increased overhead in some places. If unsure say N here.
1367
1368config SCHED_SMT
1369 bool "SMT scheduler support"
1370 depends on ARM_CPU_TOPOLOGY
1371 help
1372 Improves the CPU scheduler's decision making when dealing with
1373 MultiThreading at a cost of slightly increased overhead in some
1374 places. If unsure say N here.
1375
Russell Kinga8cbcd92009-05-16 11:51:14 +01001376config HAVE_ARM_SCU
1377 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001378 help
1379 This option enables support for the ARM system coherency unit
1380
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001381config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001382 bool "Architected timer support"
1383 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001384 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001385 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001386 help
1387 This option enables support for the ARM architected timer
1388
Russell Kingf32f4ce2009-05-16 12:14:21 +01001389config HAVE_ARM_TWD
1390 bool
1391 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001392 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001393 help
1394 This options enables support for the ARM timer and watchdog unit
1395
Nicolas Pitree8db2882012-04-12 02:45:22 -04001396config MCPM
1397 bool "Multi-Cluster Power Management"
1398 depends on CPU_V7 && SMP
1399 help
1400 This option provides the common power management infrastructure
1401 for (multi-)cluster based systems, such as big.LITTLE based
1402 systems.
1403
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001404config MCPM_QUAD_CLUSTER
1405 bool
1406 depends on MCPM
1407 help
1408 To avoid wasting resources unnecessarily, MCPM only supports up
1409 to 2 clusters by default.
1410 Platforms with 3 or 4 clusters that use MCPM must select this
1411 option to allow the additional clusters to be managed.
1412
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001413config BIG_LITTLE
1414 bool "big.LITTLE support (Experimental)"
1415 depends on CPU_V7 && SMP
1416 select MCPM
1417 help
1418 This option enables support selections for the big.LITTLE
1419 system architecture.
1420
1421config BL_SWITCHER
1422 bool "big.LITTLE switcher support"
1423 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001424 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001425 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001426 help
1427 The big.LITTLE "switcher" provides the core functionality to
1428 transparently handle transition between a cluster of A15's
1429 and a cluster of A7's in a big.LITTLE system.
1430
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001431config BL_SWITCHER_DUMMY_IF
1432 tristate "Simple big.LITTLE switcher user interface"
1433 depends on BL_SWITCHER && DEBUG_KERNEL
1434 help
1435 This is a simple and dummy char dev interface to control
1436 the big.LITTLE switcher core code. It is meant for
1437 debugging purposes only.
1438
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001439choice
1440 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001441 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001442 default VMSPLIT_3G
1443 help
1444 Select the desired split between kernel and user memory.
1445
1446 If you are not absolutely sure what you are doing, leave this
1447 option alone!
1448
1449 config VMSPLIT_3G
1450 bool "3G/1G user/kernel split"
1451 config VMSPLIT_2G
1452 bool "2G/2G user/kernel split"
1453 config VMSPLIT_1G
1454 bool "1G/3G user/kernel split"
1455endchoice
1456
1457config PAGE_OFFSET
1458 hex
Russell King006fa252014-02-26 19:40:46 +00001459 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001460 default 0x40000000 if VMSPLIT_1G
1461 default 0x80000000 if VMSPLIT_2G
1462 default 0xC0000000
1463
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464config NR_CPUS
1465 int "Maximum number of CPUs (2-32)"
1466 range 2 32
1467 depends on SMP
1468 default "4"
1469
Russell Kinga054a812005-11-02 22:24:33 +00001470config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001471 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001472 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001473 help
1474 Say Y here to experiment with turning CPUs off and on. CPUs
1475 can be controlled through /sys/devices/system/cpu.
1476
Will Deacon2bdd4242012-12-12 19:20:52 +00001477config ARM_PSCI
1478 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1479 depends on CPU_V7
1480 help
1481 Say Y here if you want Linux to communicate with system firmware
1482 implementing the PSCI specification for CPU-centric power
1483 management operations described in ARM document number ARM DEN
1484 0022A ("Power State Coordination Interface System Software on
1485 ARM processors").
1486
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001487# The GPIO number here must be sorted by descending number. In case of
1488# a multiplatform kernel, we just want the highest value required by the
1489# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001490config ARCH_NR_GPIO
1491 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001492 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001493 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1494 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001495 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001496 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001497 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001498 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001499 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001500 default 0
1501 help
1502 Maximum number of GPIOs in the system.
1503
1504 If unsure, leave the default value.
1505
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001506source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001507
Russell Kingc9218b12013-04-27 23:31:10 +01001508config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001509 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001510 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001511 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001512 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001513 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001514 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001515
1516choice
Russell King47d84682013-09-10 23:47:55 +01001517 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001518 prompt "Timer frequency"
1519
1520config HZ_100
1521 bool "100 Hz"
1522
1523config HZ_200
1524 bool "200 Hz"
1525
1526config HZ_250
1527 bool "250 Hz"
1528
1529config HZ_300
1530 bool "300 Hz"
1531
1532config HZ_500
1533 bool "500 Hz"
1534
1535config HZ_1000
1536 bool "1000 Hz"
1537
1538endchoice
1539
1540config HZ
1541 int
Russell King47d84682013-09-10 23:47:55 +01001542 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001543 default 100 if HZ_100
1544 default 200 if HZ_200
1545 default 250 if HZ_250
1546 default 300 if HZ_300
1547 default 500 if HZ_500
1548 default 1000
1549
1550config SCHED_HRTICK
1551 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001552
Catalin Marinas16c79652009-07-24 12:33:02 +01001553config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001554 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001555 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001556 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001557 select AEABI
1558 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001559 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001560 help
1561 By enabling this option, the kernel will be compiled in
1562 Thumb-2 mode. A compiler/assembler that understand the unified
1563 ARM-Thumb syntax is needed.
1564
1565 If unsure, say N.
1566
Dave Martin6f685c52011-03-03 11:41:12 +01001567config THUMB2_AVOID_R_ARM_THM_JUMP11
1568 bool "Work around buggy Thumb-2 short branch relocations in gas"
1569 depends on THUMB2_KERNEL && MODULES
1570 default y
1571 help
1572 Various binutils versions can resolve Thumb-2 branches to
1573 locally-defined, preemptible global symbols as short-range "b.n"
1574 branch instructions.
1575
1576 This is a problem, because there's no guarantee the final
1577 destination of the symbol, or any candidate locations for a
1578 trampoline, are within range of the branch. For this reason, the
1579 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1580 relocation in modules at all, and it makes little sense to add
1581 support.
1582
1583 The symptom is that the kernel fails with an "unsupported
1584 relocation" error when loading some modules.
1585
1586 Until fixed tools are available, passing
1587 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1588 code which hits this problem, at the cost of a bit of extra runtime
1589 stack usage in some cases.
1590
1591 The problem is described in more detail at:
1592 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1593
1594 Only Thumb-2 kernels are affected.
1595
1596 Unless you are sure your tools don't have this problem, say Y.
1597
Catalin Marinas0becb082009-07-24 12:32:53 +01001598config ARM_ASM_UNIFIED
1599 bool
1600
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001601config AEABI
1602 bool "Use the ARM EABI to compile the kernel"
1603 help
1604 This option allows for the kernel to be compiled using the latest
1605 ARM ABI (aka EABI). This is only useful if you are using a user
1606 space environment that is also compiled with EABI.
1607
1608 Since there are major incompatibilities between the legacy ABI and
1609 EABI, especially with regard to structure member alignment, this
1610 option also changes the kernel syscall calling convention to
1611 disambiguate both ABIs and allow for backward compatibility support
1612 (selected with CONFIG_OABI_COMPAT).
1613
1614 To use this you need GCC version 4.0.0 or later.
1615
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001616config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001617 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001618 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001619 help
1620 This option preserves the old syscall interface along with the
1621 new (ARM EABI) one. It also provides a compatibility layer to
1622 intercept syscalls that have structure arguments which layout
1623 in memory differs between the legacy ABI and the new ARM EABI
1624 (only for non "thumb" binaries). This option adds a tiny
1625 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001626
1627 The seccomp filter system will not be available when this is
1628 selected, since there is no way yet to sensibly distinguish
1629 between calling conventions during filtering.
1630
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001631 If you know you'll be using only pure EABI user space then you
1632 can say N here. If this option is not selected and you attempt
1633 to execute a legacy ABI binary then the result will be
1634 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001635 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001636
Mel Gormaneb335752009-05-13 17:34:48 +01001637config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001638 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001639
Russell King05944d72006-11-30 20:43:51 +00001640config ARCH_SPARSEMEM_ENABLE
1641 bool
1642
Russell King07a2f732008-10-01 21:39:58 +01001643config ARCH_SPARSEMEM_DEFAULT
1644 def_bool ARCH_SPARSEMEM_ENABLE
1645
Russell King05944d72006-11-30 20:43:51 +00001646config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001647 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001648
Will Deacon7b7bf492011-05-19 13:21:14 +01001649config HAVE_ARCH_PFN_VALID
1650 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1651
Steve Capperb8cd51a2014-10-09 15:29:20 -07001652config HAVE_GENERIC_RCU_GUP
1653 def_bool y
1654 depends on ARM_LPAE
1655
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001656config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001657 bool "High Memory Support"
1658 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001659 help
1660 The address space of ARM processors is only 4 Gigabytes large
1661 and it has to accommodate user address space, kernel address
1662 space as well as some memory mapped IO. That means that, if you
1663 have a large amount of physical memory and/or IO, not all of the
1664 memory can be "permanently mapped" by the kernel. The physical
1665 memory that is not permanently mapped is called "high memory".
1666
1667 Depending on the selected kernel/user memory split, minimum
1668 vmalloc space and actual amount of RAM, you may not need this
1669 option which should result in a slightly faster kernel.
1670
1671 If unsure, say n.
1672
Russell King65cec8e2009-08-17 20:02:06 +01001673config HIGHPTE
1674 bool "Allocate 2nd-level pagetables from highmem"
1675 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001676
Jamie Iles1b8873a2010-02-02 20:25:44 +01001677config HW_PERF_EVENTS
1678 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001679 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001680 default y
1681 help
1682 Enable hardware performance counter support for perf events. If
1683 disabled, perf events will use software events only.
1684
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001685config SYS_SUPPORTS_HUGETLBFS
1686 def_bool y
1687 depends on ARM_LPAE
1688
Catalin Marinas8d962502012-07-25 14:39:26 +01001689config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1690 def_bool y
1691 depends on ARM_LPAE
1692
Steven Capper4bfab202013-07-26 14:58:22 +01001693config ARCH_WANT_GENERAL_HUGETLB
1694 def_bool y
1695
Dave Hansen3f22ab22005-06-23 00:07:43 -07001696source "mm/Kconfig"
1697
Magnus Dammc1b2d972010-07-05 10:00:11 +01001698config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001699 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1700 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001701 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001702 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001703 default "11"
1704 help
1705 The kernel memory allocator divides physically contiguous memory
1706 blocks into "zones", where each zone is a power of two number of
1707 pages. This option selects the largest power of two that the kernel
1708 keeps in the memory allocator. If you need to allocate very large
1709 blocks of physically contiguous memory, then you may need to
1710 increase this value.
1711
1712 This config option is actually maximum order plus one. For example,
1713 a value of 11 means that the largest free memory block is 2^10 pages.
1714
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715config ALIGNMENT_TRAP
1716 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001717 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001719 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001721 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001722 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1723 address divisible by 4. On 32-bit ARM processors, these non-aligned
1724 fetch/store instructions will be emulated in software if you say
1725 here, which has a severe performance impact. This is necessary for
1726 correct operation of some network protocols. With an IP-only
1727 configuration it is safe to say N, otherwise say Y.
1728
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001729config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001730 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1731 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001732 default y if CPU_FEROCEON
1733 help
1734 Implement faster copy_to_user and clear_user methods for CPU
1735 cores where a 8-word STM instruction give significantly higher
1736 memory write throughput than a sequence of individual 32bit stores.
1737
1738 A possible side effect is a slight increase in scheduling latency
1739 between threads sharing the same address space if they invoke
1740 such copy operations with large buffers.
1741
1742 However, if the CPU data cache is using a write-allocate mode,
1743 this option is unlikely to provide any performance gain.
1744
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001745config SECCOMP
1746 bool
1747 prompt "Enable seccomp to safely compute untrusted bytecode"
1748 ---help---
1749 This kernel feature is useful for number crunching applications
1750 that may need to compute untrusted bytecode during their
1751 execution. By using pipes or other transports made available to
1752 the process as file descriptors supporting the read/write
1753 syscalls, it's possible to isolate those applications in
1754 their own address space using seccomp. Once seccomp is
1755 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1756 and the task is only allowed to execute a few safe syscalls
1757 defined by each seccomp mode.
1758
Stefano Stabellini06e62952013-10-15 15:47:14 +00001759config SWIOTLB
1760 def_bool y
1761
1762config IOMMU_HELPER
1763 def_bool SWIOTLB
1764
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001765config XEN_DOM0
1766 def_bool y
1767 depends on XEN
1768
1769config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001770 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001771 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001772 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001773 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001774 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001775 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001776 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001777 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001778 help
1779 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1780
Linus Torvalds1da177e2005-04-16 15:20:36 -07001781endmenu
1782
1783menu "Boot options"
1784
Grant Likely9eb8f672011-04-28 14:27:20 -06001785config USE_OF
1786 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001787 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001788 select OF
1789 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001790 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001791 help
1792 Include support for flattened device tree machine descriptions.
1793
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001794config ATAGS
1795 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1796 default y
1797 help
1798 This is the traditional way of passing data to the kernel at boot
1799 time. If you are solely relying on the flattened device tree (or
1800 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1801 to remove ATAGS support from your kernel binary. If unsure,
1802 leave this to y.
1803
1804config DEPRECATED_PARAM_STRUCT
1805 bool "Provide old way to pass kernel parameters"
1806 depends on ATAGS
1807 help
1808 This was deprecated in 2001 and announced to live on for 5 years.
1809 Some old boot loaders still use this way.
1810
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811# Compressed boot loader in ROM. Yes, we really want to ask about
1812# TEXT and BSS so we preserve their values in the config files.
1813config ZBOOT_ROM_TEXT
1814 hex "Compressed ROM boot loader base address"
1815 default "0"
1816 help
1817 The physical address at which the ROM-able zImage is to be
1818 placed in the target. Platforms which normally make use of
1819 ROM-able zImage formats normally set this to a suitable
1820 value in their defconfig file.
1821
1822 If ZBOOT_ROM is not enabled, this has no effect.
1823
1824config ZBOOT_ROM_BSS
1825 hex "Compressed ROM boot loader BSS address"
1826 default "0"
1827 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001828 The base address of an area of read/write memory in the target
1829 for the ROM-able zImage which must be available while the
1830 decompressor is running. It must be large enough to hold the
1831 entire decompressed kernel plus an additional 128 KiB.
1832 Platforms which normally make use of ROM-able zImage formats
1833 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834
1835 If ZBOOT_ROM is not enabled, this has no effect.
1836
1837config ZBOOT_ROM
1838 bool "Compressed boot loader in ROM/flash"
1839 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001840 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 help
1842 Say Y here if you intend to execute your compressed kernel image
1843 (zImage) directly from ROM or flash. If unsure, say N.
1844
Simon Horman090ab3f2011-04-26 06:29:53 +01001845choice
1846 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001847 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001848 default ZBOOT_ROM_NONE
1849 help
1850 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001851 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001852 kernel image to an MMC or SD card and boot the kernel straight
1853 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001854 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001855 rest the kernel image to RAM.
1856
1857config ZBOOT_ROM_NONE
1858 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1859 help
1860 Do not load image from SD or MMC
1861
Simon Hormanf45b1142011-01-11 04:01:08 +01001862config ZBOOT_ROM_MMCIF
1863 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001864 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001865 Load image from MMCIF hardware block.
1866
1867config ZBOOT_ROM_SH_MOBILE_SDHI
1868 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1869 help
1870 Load image from SDHI hardware block
1871
1872endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001873
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001874config ARM_APPENDED_DTB
1875 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001876 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001877 help
1878 With this option, the boot code will look for a device tree binary
1879 (DTB) appended to zImage
1880 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1881
1882 This is meant as a backward compatibility convenience for those
1883 systems with a bootloader that can't be upgraded to accommodate
1884 the documented boot protocol using a device tree.
1885
1886 Beware that there is very little in terms of protection against
1887 this option being confused by leftover garbage in memory that might
1888 look like a DTB header after a reboot if no actual DTB is appended
1889 to zImage. Do not leave this option active in a production kernel
1890 if you don't intend to always append a DTB. Proper passing of the
1891 location into r2 of a bootloader provided DTB is always preferable
1892 to this option.
1893
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001894config ARM_ATAG_DTB_COMPAT
1895 bool "Supplement the appended DTB with traditional ATAG information"
1896 depends on ARM_APPENDED_DTB
1897 help
1898 Some old bootloaders can't be updated to a DTB capable one, yet
1899 they provide ATAGs with memory configuration, the ramdisk address,
1900 the kernel cmdline string, etc. Such information is dynamically
1901 provided by the bootloader and can't always be stored in a static
1902 DTB. To allow a device tree enabled kernel to be used with such
1903 bootloaders, this option allows zImage to extract the information
1904 from the ATAG list and store it at run time into the appended DTB.
1905
Genoud Richardd0f34a12012-06-26 16:37:59 +01001906choice
1907 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1908 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1909
1910config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1911 bool "Use bootloader kernel arguments if available"
1912 help
1913 Uses the command-line options passed by the boot loader instead of
1914 the device tree bootargs property. If the boot loader doesn't provide
1915 any, the device tree bootargs property will be used.
1916
1917config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1918 bool "Extend with bootloader kernel arguments"
1919 help
1920 The command-line arguments provided by the boot loader will be
1921 appended to the the device tree bootargs property.
1922
1923endchoice
1924
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925config CMDLINE
1926 string "Default kernel command string"
1927 default ""
1928 help
1929 On some architectures (EBSA110 and CATS), there is currently no way
1930 for the boot loader to pass arguments to the kernel. For these
1931 architectures, you should supply some command-line options at build
1932 time by entering them here. As a minimum, you should specify the
1933 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1934
Victor Boivie4394c122011-05-04 17:07:55 +01001935choice
1936 prompt "Kernel command line type" if CMDLINE != ""
1937 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001938 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001939
1940config CMDLINE_FROM_BOOTLOADER
1941 bool "Use bootloader kernel arguments if available"
1942 help
1943 Uses the command-line options passed by the boot loader. If
1944 the boot loader doesn't provide any, the default kernel command
1945 string provided in CMDLINE will be used.
1946
1947config CMDLINE_EXTEND
1948 bool "Extend bootloader kernel arguments"
1949 help
1950 The command-line arguments provided by the boot loader will be
1951 appended to the default kernel command string.
1952
Alexander Holler92d20402010-02-16 19:04:53 +01001953config CMDLINE_FORCE
1954 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001955 help
1956 Always use the default kernel command string, even if the boot
1957 loader passes other arguments to the kernel.
1958 This is useful if you cannot or don't want to change the
1959 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001960endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001961
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962config XIP_KERNEL
1963 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001964 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965 help
1966 Execute-In-Place allows the kernel to run from non-volatile storage
1967 directly addressable by the CPU, such as NOR flash. This saves RAM
1968 space since the text section of the kernel is not loaded from flash
1969 to RAM. Read-write sections, such as the data section and stack,
1970 are still copied to RAM. The XIP kernel is not compressed since
1971 it has to run directly from flash, so it will take more space to
1972 store it. The flash address used to link the kernel object files,
1973 and for storing it, is configuration dependent. Therefore, if you
1974 say Y here, you must know the proper physical address where to
1975 store the kernel image depending on your own flash memory usage.
1976
1977 Also note that the make target becomes "make xipImage" rather than
1978 "make zImage" or "make Image". The final kernel binary to put in
1979 ROM memory will be arch/arm/boot/xipImage.
1980
1981 If unsure, say N.
1982
1983config XIP_PHYS_ADDR
1984 hex "XIP Kernel Physical Location"
1985 depends on XIP_KERNEL
1986 default "0x00080000"
1987 help
1988 This is the physical address in your flash memory the kernel will
1989 be linked for and stored to. This address is dependent on your
1990 own flash usage.
1991
Richard Purdiec587e4a2007-02-06 21:29:00 +01001992config KEXEC
1993 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001994 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001995 help
1996 kexec is a system call that implements the ability to shutdown your
1997 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001998 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001999 you can start any kernel with it, not just Linux.
2000
2001 It is an ongoing process to be certain the hardware in a machine
2002 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002003 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002004
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002005config ATAGS_PROC
2006 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002007 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002008 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002009 help
2010 Should the atags used to boot the kernel be exported in an "atags"
2011 file in procfs. Useful with kexec.
2012
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002013config CRASH_DUMP
2014 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002015 help
2016 Generate crash dump after being started by kexec. This should
2017 be normally only set in special crash dump kernels which are
2018 loaded in the main kernel with kexec-tools into a specially
2019 reserved region and then later executed after a crash by
2020 kdump/kexec. The crash dump kernel must be compiled to a
2021 memory address not used by the main kernel
2022
2023 For more details see Documentation/kdump/kdump.txt
2024
Eric Miaoe69edc792010-07-05 15:56:50 +02002025config AUTO_ZRELADDR
2026 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002027 help
2028 ZRELADDR is the physical address where the decompressed kernel
2029 image will be placed. If AUTO_ZRELADDR is selected, the address
2030 will be determined at run-time by masking the current IP with
2031 0xf8000000. This assumes the zImage being placed in the first 128MB
2032 from start of memory.
2033
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034endmenu
2035
Russell Kingac9d7ef2008-08-18 17:26:00 +01002036menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039
Russell Kingac9d7ef2008-08-18 17:26:00 +01002040source "drivers/cpuidle/Kconfig"
2041
2042endmenu
2043
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044menu "Floating point emulation"
2045
2046comment "At least one emulation must be selected"
2047
2048config FPE_NWFPE
2049 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002050 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051 ---help---
2052 Say Y to include the NWFPE floating point emulator in the kernel.
2053 This is necessary to run most binaries. Linux does not currently
2054 support floating point hardware so you need to say Y here even if
2055 your machine has an FPA or floating point co-processor podule.
2056
2057 You may say N here if you are going to load the Acorn FPEmulator
2058 early in the bootup.
2059
2060config FPE_NWFPE_XP
2061 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002062 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063 help
2064 Say Y to include 80-bit support in the kernel floating-point
2065 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2066 Note that gcc does not generate 80-bit operations by default,
2067 so in most cases this option only enlarges the size of the
2068 floating point emulator without any good reason.
2069
2070 You almost surely want to say N here.
2071
2072config FPE_FASTFPE
2073 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002074 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075 ---help---
2076 Say Y here to include the FAST floating point emulator in the kernel.
2077 This is an experimental much faster emulator which now also has full
2078 precision for the mantissa. It does not support any exceptions.
2079 It is very simple, and approximately 3-6 times faster than NWFPE.
2080
2081 It should be sufficient for most programs. It may be not suitable
2082 for scientific calculations, but you have to check this for yourself.
2083 If you do not feel you need a faster FP emulation you should better
2084 choose NWFPE.
2085
2086config VFP
2087 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002088 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 help
2090 Say Y to include VFP support code in the kernel. This is needed
2091 if your hardware includes a VFP unit.
2092
2093 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2094 release notes and additional status information.
2095
2096 Say N if your target does not have VFP hardware.
2097
Catalin Marinas25ebee02007-09-25 15:22:24 +01002098config VFPv3
2099 bool
2100 depends on VFP
2101 default y if CPU_V7
2102
Catalin Marinasb5872db2008-01-10 19:16:17 +01002103config NEON
2104 bool "Advanced SIMD (NEON) Extension support"
2105 depends on VFPv3 && CPU_V7
2106 help
2107 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2108 Extension.
2109
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002110config KERNEL_MODE_NEON
2111 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002112 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002113 help
2114 Say Y to include support for NEON in kernel mode.
2115
Linus Torvalds1da177e2005-04-16 15:20:36 -07002116endmenu
2117
2118menu "Userspace binary formats"
2119
2120source "fs/Kconfig.binfmt"
2121
2122config ARTHUR
2123 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00002124 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002125 help
2126 Say Y here to include the kernel code necessary if you want to run
2127 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2128 experimental; if this sounds frightening, say N and sleep in peace.
2129 You can also say M here to compile this support as a module (which
2130 will be called arthur).
2131
2132endmenu
2133
2134menu "Power management options"
2135
Russell Kingeceab4a2005-11-15 11:31:41 +00002136source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137
Johannes Bergf4cb5702007-12-08 02:14:00 +01002138config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002139 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002140 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002141 def_bool y
2142
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002143config ARM_CPU_SUSPEND
2144 def_bool PM_SLEEP
2145
Sebastian Capella603fb422014-03-25 01:20:29 +01002146config ARCH_HIBERNATION_POSSIBLE
2147 bool
2148 depends on MMU
2149 default y if ARCH_SUSPEND_POSSIBLE
2150
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151endmenu
2152
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002153source "net/Kconfig"
2154
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002155source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156
2157source "fs/Kconfig"
2158
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159source "arch/arm/Kconfig.debug"
2160
2161source "security/Kconfig"
2162
2163source "crypto/Kconfig"
2164
2165source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002166
2167source "arch/arm/kvm/Kconfig"