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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)
Jamie Iles7ada1892010-02-02 20:24:58 +010063 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010064 select HAVE_PERF_REGS
65 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070066 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010067 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010068 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070069 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070070 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010071 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010072 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040073 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010074 select OLD_SIGACTION
75 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010076 select PERF_USE_VMALLOC
77 select RTC_LIB
78 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010079 # Above selects are sorted alphabetically; please add new ones
80 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 help
82 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000083 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000085 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 Europe. There is an ARM Linux project with a web page at
87 <http://www.arm.linux.org.uk/>.
88
Russell King74facff2011-06-02 11:16:22 +010089config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070090 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010091 bool
92
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020093config NEED_SG_DMA_LENGTH
94 bool
95
96config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020097 bool
Russell Kingb1b3f492012-10-06 17:12:25 +010098 select ARM_HAS_SG_CHAIN
99 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200100
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900101if ARM_DMA_USE_IOMMU
102
103config ARM_DMA_IOMMU_ALIGNMENT
104 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
105 range 4 9
106 default 8
107 help
108 DMA mapping framework by default aligns all buffers to the smallest
109 PAGE_SIZE order which is greater than or equal to the requested buffer
110 size. This works well for buffers up to a few hundreds kilobytes, but
111 for larger buffers it just a waste of address space. Drivers which has
112 relatively small addressing window (like 64Mib) might run out of
113 virtual space with just a few allocations.
114
115 With this parameter you can specify the maximum PAGE_SIZE order for
116 DMA IOMMU buffers. Larger buffers will be aligned only to this
117 specified order. The order is expressed as a power of two multiplied
118 by the PAGE_SIZE.
119
120endif
121
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100122config MIGHT_HAVE_PCI
123 bool
124
Ralf Baechle75e71532007-02-09 17:08:58 +0000125config SYS_SUPPORTS_APM_EMULATION
126 bool
127
Linus Walleijbc581772009-09-15 17:30:37 +0100128config HAVE_TCM
129 bool
130 select GENERIC_ALLOCATOR
131
Russell Kinge119bff2010-01-10 17:23:29 +0000132config HAVE_PROC_CPU
133 bool
134
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700135config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000136 bool
Al Viro5ea81762007-02-11 15:41:31 +0000137
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138config EISA
139 bool
140 ---help---
141 The Extended Industry Standard Architecture (EISA) bus was
142 developed as an open alternative to the IBM MicroChannel bus.
143
144 The EISA bus provided some of the features of the IBM MicroChannel
145 bus while maintaining backward compatibility with cards made for
146 the older ISA bus. The EISA bus saw limited use between 1988 and
147 1995 when it was made obsolete by the PCI bus.
148
149 Say Y here if you are building a kernel for an EISA-based machine.
150
151 Otherwise, say N.
152
153config SBUS
154 bool
155
Russell Kingf16fb1e2007-04-28 09:59:37 +0100156config STACKTRACE_SUPPORT
157 bool
158 default y
159
Nicolas Pitref76e9152008-04-24 01:31:46 -0400160config HAVE_LATENCYTOP_SUPPORT
161 bool
162 depends on !SMP
163 default y
164
Russell Kingf16fb1e2007-04-28 09:59:37 +0100165config LOCKDEP_SUPPORT
166 bool
167 default y
168
Russell King7ad1bcb2006-08-27 12:07:02 +0100169config TRACE_IRQFLAGS_SUPPORT
170 bool
171 default y
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173config RWSEM_XCHGADD_ALGORITHM
174 bool
Will Deacon8a874112014-05-02 17:06:19 +0100175 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
David Howellsf0d1b0b2006-12-08 02:37:49 -0800177config ARCH_HAS_ILOG2_U32
178 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800179
180config ARCH_HAS_ILOG2_U64
181 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800182
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100183config ARCH_HAS_BANDGAP
184 bool
185
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800186config GENERIC_HWEIGHT
187 bool
188 default y
189
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190config GENERIC_CALIBRATE_DELAY
191 bool
192 default y
193
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100194config ARCH_MAY_HAVE_PC_FDC
195 bool
196
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800197config ZONE_DMA
198 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800199
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800200config NEED_DMA_MAP_STATE
201 def_bool y
202
David A. Longc7edc9e2014-03-07 11:23:04 -0500203config ARCH_SUPPORTS_UPROBES
204 def_bool y
205
Rob Herring58af4a22012-03-20 14:33:01 -0500206config ARCH_HAS_DMA_SET_COHERENT_MASK
207 bool
208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209config GENERIC_ISA_DMA
210 bool
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212config FIQ
213 bool
214
Rob Herring13a50452012-02-07 09:28:22 -0600215config NEED_RET_TO_USER
216 bool
217
Al Viro034d2f52005-12-19 16:27:59 -0500218config ARCH_MTD_XIP
219 bool
220
Hyok S. Choic760fc12006-03-27 15:18:50 +0100221config VECTORS_BASE
222 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900223 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100224 default DRAM_BASE if REMAP_VECTORS_TO_RAM
225 default 0x00000000
226 help
Russell King19accfd2013-07-04 11:40:32 +0100227 The base address of exception vectors. This must be two pages
228 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100229
Russell Kingdc21af92011-01-04 19:09:43 +0000230config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100231 bool "Patch physical to virtual translations at runtime" if EMBEDDED
232 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100233 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000234 depends on !ARCH_REALVIEW || !SPARSEMEM
235 help
Russell King111e9a52011-05-12 10:02:42 +0100236 Patch phys-to-virt and virt-to-phys translation functions at
237 boot and module load time according to the position of the
238 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000239
Russell King111e9a52011-05-12 10:02:42 +0100240 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100241 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000242
Russell Kingc1beced2011-08-10 10:23:45 +0100243 Only disable this option if you know that you do not require
244 this feature (eg, building a kernel for a single machine) and
245 you need to shrink the kernel to the minimal size.
246
Rob Herringc334bc12012-03-04 22:03:33 -0600247config NEED_MACH_IO_H
248 bool
249 help
250 Select this when mach/io.h is required to provide special
251 definitions for this platform. The need for mach/io.h should
252 be avoided when possible.
253
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400254config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400255 bool
Russell King111e9a52011-05-12 10:02:42 +0100256 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400257 Select this when mach/memory.h is required to provide special
258 definitions for this platform. The need for mach/memory.h should
259 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400260
261config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100262 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100263 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100264 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100265 default 0x00000000 if ARCH_EBSA110 || \
266 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
267 ARCH_FOOTBRIDGE || \
268 ARCH_INTEGRATOR || \
269 ARCH_IOP13XX || \
270 ARCH_KS8695 || \
271 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
272 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
273 default 0x20000000 if ARCH_S5PV210
274 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
275 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
276 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
277 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
278 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400279 help
280 Please provide the physical address corresponding to the
281 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000282
Simon Glass87e040b2011-08-16 23:44:26 +0100283config GENERIC_BUG
284 def_bool y
285 depends on BUG
286
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287source "init/Kconfig"
288
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700289source "kernel/Kconfig.freezer"
290
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291menu "System Type"
292
Hyok S. Choi3c427972009-07-24 12:35:00 +0100293config MMU
294 bool "MMU-based Paged Memory Management Support"
295 default y
296 help
297 Select if you want MMU-based virtualised addressing space
298 support by paged memory management. If unsure, say 'Y'.
299
Russell Kingccf50e22010-03-15 19:03:06 +0000300#
301# The "ARM system type" choice list is ordered alphabetically by option
302# text. Please add new entries in the option alphabetic order.
303#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304choice
305 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100306 default ARCH_VERSATILE if !MMU
307 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
Rob Herring387798b2012-09-06 13:41:12 -0500309config ARCH_MULTIPLATFORM
310 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100311 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600312 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700313 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500314 select ARM_PATCH_PHYS_VIRT
315 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500316 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600317 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600318 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100319 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500320 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600321 select SPARSE_IRQ
322 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600323
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100324config ARCH_REALVIEW
325 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100326 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100327 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100328 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200329 select COMMON_CLK
330 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100331 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100332 select GPIO_PL061 if GPIOLIB
333 select ICST
334 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000335 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000336 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100337 help
338 This enables support for ARM Ltd RealView boards.
339
340config ARCH_VERSATILE
341 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100342 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100343 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100344 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100345 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100346 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100347 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900348 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000349 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000350 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100351 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000352 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100353 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100354 help
355 This enables support for ARM Ltd Versatile board.
356
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100357config ARCH_AT91
358 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100359 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100360 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100361 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500362 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800363 select PINCTRL
Nicolas Ferred48346c2014-11-21 16:41:50 +0100364 select PINCTRL_AT91
365 select USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100366 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100367 This enables support for systems based on Atmel
Nicolas Ferre32963a82014-11-21 16:44:31 +0100368 AT91RM9200, AT91SAM9 and SAMA5 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100369
Russell King93e22562012-10-12 14:20:52 +0100370config ARCH_CLPS711X
371 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400372 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400373 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400374 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100375 select COMMON_CLK
376 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400377 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400378 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400379 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100380 help
381 Support for Cirrus Logic 711x/721x/731x based boards.
382
Russell King788c9702009-04-26 14:21:59 +0100383config ARCH_GEMINI
384 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100385 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200386 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100387 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200388 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100389 help
390 Support for the Cortina Systems Gemini family SoCs
391
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392config ARCH_EBSA110
393 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100394 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000395 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100396 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600397 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400398 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700399 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 help
401 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000402 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 Ethernet interface, two PCMCIA sockets, two serial ports and a
404 parallel port.
405
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100406config ARCH_EFM32
407 bool "Energy Micro efm32"
408 depends on !MMU
409 select ARCH_REQUIRE_GPIOLIB
410 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100411 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100412 select CLKSRC_OF
413 select COMMON_CLK
414 select CPU_V7M
415 select GENERIC_CLOCKEVENTS
416 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700417 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100418 select SPARSE_IRQ
419 select USE_OF
420 help
421 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
422 processors.
423
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000424config ARCH_EP93XX
425 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100426 select ARCH_HAS_HOLES_MEMORYMODEL
427 select ARCH_REQUIRE_GPIOLIB
428 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000429 select ARM_AMBA
430 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100431 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100432 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000433 help
434 This enables support for the Cirrus EP93xx series of CPUs.
435
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436config ARCH_FOOTBRIDGE
437 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000438 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000440 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200441 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600442 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400443 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000444 help
445 Support for systems based on the DC21285 companion chip
446 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100448config ARCH_NETX
449 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100450 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100451 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000452 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100453 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000454 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100455 This enables support for systems based on the Hilscher NetX Soc
456
Russell King3b938be2007-05-12 11:25:44 +0100457config ARCH_IOP13XX
458 bool "IOP13xx-based"
459 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100460 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400461 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600462 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100463 select PCI
464 select PLAT_IOP
465 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000466 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100467 help
468 Support for Intel's IOP13XX (XScale) family of processors.
469
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100470config ARCH_IOP32X
471 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100472 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100473 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000474 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200475 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600476 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100477 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100478 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000479 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100480 Support for Intel's 80219 and IOP32X (XScale) family of
481 processors.
482
483config ARCH_IOP33X
484 bool "IOP33x-based"
485 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100486 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000487 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200488 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600489 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100490 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100491 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100492 help
493 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494
Russell King3b938be2007-05-12 11:25:44 +0100495config ARCH_IXP4XX
496 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100497 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500498 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100499 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100500 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100501 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000502 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100503 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100504 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100505 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600506 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200507 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100508 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100509 help
Russell King3b938be2007-05-12 11:25:44 +0100510 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100511
Saeed Bisharaedabd382009-08-06 15:12:43 +0300512config ARCH_DOVE
513 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300514 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100515 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300516 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100517 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100518 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100519 select PINCTRL
520 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200521 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300522 help
523 Support for the Marvell Dove SoC 88AP510
524
Russell King788c9702009-04-26 14:21:59 +0100525config ARCH_MV78XX0
526 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700527 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100528 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100529 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100530 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100531 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200532 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100533 help
534 Support for the following Marvell MV78xx0 series SoCs:
535 MV781x0, MV782x0.
536
537config ARCH_ORION5X
538 bool "Marvell Orion"
539 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700540 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100541 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100542 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100543 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100544 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200545 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100546 help
547 Support for the following Marvell Orion 5x series SoCs:
548 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
549 Orion-2 (5281), Orion-1-90 (6183).
550
551config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500552 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100553 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100554 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100555 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100556 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100557 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800558 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800559 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800560 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800561 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100562 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400563 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100564 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500565 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100566
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100567config ARCH_KS8695
568 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100569 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200570 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100571 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200572 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100573 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100574 help
575 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
576 System-on-Chip devices.
577
Russell King788c9702009-04-26 14:21:59 +0100578config ARCH_W90X900
579 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100580 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100581 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100582 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100583 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100584 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200585 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100586 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
587 At present, the w90x900 has been renamed nuc900, regarding
588 the ARM series product line, you can login the following
589 link address to know more.
590
591 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
592 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400593
Russell King93e22562012-10-12 14:20:52 +0100594config ARCH_LPC32XX
595 bool "NXP LPC32XX"
596 select ARCH_REQUIRE_GPIOLIB
597 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000598 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100599 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100600 select CPU_ARM926T
601 select GENERIC_CLOCKEVENTS
602 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100603 select USE_OF
604 help
605 Support for the NXP LPC32XX family of processors
606
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700608 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100609 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100610 select ARCH_MTD_XIP
611 select ARCH_REQUIRE_GPIOLIB
612 select ARM_CPU_SUSPEND if PM
613 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100614 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100615 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200616 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100617 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800618 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100619 select HAVE_IDE
620 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800621 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800622 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000623 help
eric miao2c8086a2007-09-11 19:13:17 -0700624 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600626config ARCH_MSM
627 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700628 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700629 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100630 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800631 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800632 Support for Qualcomm MSM/QSD based systems. This runs on the
633 apps processor of the MSM/QSD and depends on a shared memory
634 interface to the modem processor which runs the baseband
635 stack and controls some vital subsystems
636 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800637
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100638config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100639 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100640 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100641 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900642 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900643 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100644 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800645 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800646 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900647 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000648 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000649 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000650 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700651 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200652 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100653 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900654 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100655 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000656 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100657 Support for Renesas ARM SoC platforms using a non-multiplatform
658 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
659 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000660
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661config ARCH_RPC
662 bool "RiscPC"
663 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100664 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100665 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000666 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100667 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100668 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200669 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100670 select HAVE_PATA_PLATFORM
671 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600672 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400673 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700674 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100675 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 help
677 On the Acorn Risc-PC, Linux can support the internal IDE disk and
678 CD-ROM interface, serial and parallel port, and the floppy drive.
679
680config ARCH_SA1100
681 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100682 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700683 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100684 select ARCH_SPARSEMEM_ENABLE
685 select CLKDEV_LOOKUP
686 select CLKSRC_MMIO
687 select CPU_FREQ
688 select CPU_SA1100
689 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200690 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100691 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100692 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100693 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400694 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100695 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000696 help
697 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900699config ARCH_S3C24XX
700 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900701 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100702 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100703 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200704 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800705 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900706 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900707 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900708 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100709 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900710 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600711 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900712 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900714 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
715 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
716 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
717 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900718
Ben Dooksa08ab632008-10-21 14:06:39 +0100719config ARCH_S3C64XX
720 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900721 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200722 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100723 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100724 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100725 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200726 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900727 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900728 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800729 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900730 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900731 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900732 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100733 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700734 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100735 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100736 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100737 select S3C_DEV_NAND
738 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900739 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900740 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900741 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100742 help
743 Samsung S3C64XX series based systems
744
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100745config ARCH_DAVINCI
746 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100747 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700748 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100749 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700750 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100751 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100752 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100753 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500754 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530755 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100756 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100757 help
758 Support for TI's DaVinci platform.
759
Tony Lindgrena0694862013-01-11 11:24:20 -0800760config ARCH_OMAP1
761 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600762 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100763 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800764 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100765 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200766 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100767 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100768 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800769 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800770 select HAVE_IDE
771 select IRQ_DOMAIN
772 select NEED_MACH_IO_H if PCCARD
773 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100774 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800775 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800776
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777endchoice
778
Rob Herring387798b2012-09-06 13:41:12 -0500779menu "Multiple platform selection"
780 depends on ARCH_MULTIPLATFORM
781
782comment "CPU Core family selection"
783
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100784config ARCH_MULTI_V4
785 bool "ARMv4 based platforms (FA526)"
786 depends on !ARCH_MULTI_V6_V7
787 select ARCH_MULTI_V4_V5
788 select CPU_FA526
789
Rob Herring387798b2012-09-06 13:41:12 -0500790config ARCH_MULTI_V4T
791 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500792 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100793 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200794 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
795 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
796 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500797
798config ARCH_MULTI_V5
799 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500800 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100801 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100802 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200803 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
804 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500805
806config ARCH_MULTI_V4_V5
807 bool
808
809config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800810 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500811 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600812 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500813
814config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800815 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500816 default y
817 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100818 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600819 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500820
821config ARCH_MULTI_V6_V7
822 bool
Rob Herring9352b052014-01-31 15:36:10 -0600823 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500824
825config ARCH_MULTI_CPU_AUTO
826 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
827 select ARCH_MULTI_V5
828
829endmenu
830
Rob Herring05e2a3d2013-12-05 10:04:54 -0600831config ARCH_VIRT
832 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600833 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600834 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600835 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600836 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600837
Russell Kingccf50e22010-03-15 19:03:06 +0000838#
839# This is sorted alphabetically by mach-* pathname. However, plat-*
840# Kconfigs may be included either alphabetically (according to the
841# plat- suffix) or along side the corresponding mach-* source.
842#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200843source "arch/arm/mach-mvebu/Kconfig"
844
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100845source "arch/arm/mach-asm9260/Kconfig"
846
Russell King95b8f202010-01-14 11:43:54 +0000847source "arch/arm/mach-at91/Kconfig"
848
Anders Berg1d22924e2014-05-23 11:08:35 +0200849source "arch/arm/mach-axxia/Kconfig"
850
Christian Daudt8ac49e02012-11-19 09:46:10 -0800851source "arch/arm/mach-bcm/Kconfig"
852
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200853source "arch/arm/mach-berlin/Kconfig"
854
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855source "arch/arm/mach-clps711x/Kconfig"
856
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300857source "arch/arm/mach-cns3xxx/Kconfig"
858
Russell King95b8f202010-01-14 11:43:54 +0000859source "arch/arm/mach-davinci/Kconfig"
860
861source "arch/arm/mach-dove/Kconfig"
862
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000863source "arch/arm/mach-ep93xx/Kconfig"
864
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865source "arch/arm/mach-footbridge/Kconfig"
866
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200867source "arch/arm/mach-gemini/Kconfig"
868
Rob Herring387798b2012-09-06 13:41:12 -0500869source "arch/arm/mach-highbank/Kconfig"
870
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800871source "arch/arm/mach-hisi/Kconfig"
872
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873source "arch/arm/mach-integrator/Kconfig"
874
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100875source "arch/arm/mach-iop32x/Kconfig"
876
877source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878
Dan Williams285f5fa2006-12-07 02:59:39 +0100879source "arch/arm/mach-iop13xx/Kconfig"
880
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881source "arch/arm/mach-ixp4xx/Kconfig"
882
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400883source "arch/arm/mach-keystone/Kconfig"
884
Russell King95b8f202010-01-14 11:43:54 +0000885source "arch/arm/mach-ks8695/Kconfig"
886
Carlo Caione3b8f5032014-09-10 22:16:59 +0200887source "arch/arm/mach-meson/Kconfig"
888
Russell King95b8f202010-01-14 11:43:54 +0000889source "arch/arm/mach-msm/Kconfig"
890
Jonas Jensen17723fd32013-12-18 13:58:45 +0100891source "arch/arm/mach-moxart/Kconfig"
892
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200893source "arch/arm/mach-mv78xx0/Kconfig"
894
Shawn Guo3995eb82012-09-13 19:48:07 +0800895source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896
Matthias Bruggerf682a212014-05-13 01:06:13 +0200897source "arch/arm/mach-mediatek/Kconfig"
898
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800899source "arch/arm/mach-mxs/Kconfig"
900
Russell King95b8f202010-01-14 11:43:54 +0000901source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800902
Russell King95b8f202010-01-14 11:43:54 +0000903source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000904
Daniel Tang9851ca52013-06-11 18:40:17 +1000905source "arch/arm/mach-nspire/Kconfig"
906
Tony Lindgrend48af152005-07-10 19:58:17 +0100907source "arch/arm/plat-omap/Kconfig"
908
909source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910
Tony Lindgren1dbae812005-11-10 14:26:51 +0000911source "arch/arm/mach-omap2/Kconfig"
912
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400913source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400914
Rob Herring387798b2012-09-06 13:41:12 -0500915source "arch/arm/mach-picoxcell/Kconfig"
916
Russell King95b8f202010-01-14 11:43:54 +0000917source "arch/arm/mach-pxa/Kconfig"
918source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
Russell King95b8f202010-01-14 11:43:54 +0000920source "arch/arm/mach-mmp/Kconfig"
921
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600922source "arch/arm/mach-qcom/Kconfig"
923
Russell King95b8f202010-01-14 11:43:54 +0000924source "arch/arm/mach-realview/Kconfig"
925
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200926source "arch/arm/mach-rockchip/Kconfig"
927
Russell King95b8f202010-01-14 11:43:54 +0000928source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300929
Rob Herring387798b2012-09-06 13:41:12 -0500930source "arch/arm/mach-socfpga/Kconfig"
931
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100932source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100933
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100934source "arch/arm/mach-sti/Kconfig"
935
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900936source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937
Ben Dooks431107e2010-01-26 10:11:04 +0900938source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100939
Kukjin Kim170f4e42010-02-24 16:40:44 +0900940source "arch/arm/mach-s5pv210/Kconfig"
941
Kukjin Kim83014572011-11-06 13:54:56 +0900942source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500943source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900944
Russell King882d01f2010-03-02 23:40:15 +0000945source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946
Maxime Ripard3b526342012-11-08 12:40:16 +0100947source "arch/arm/mach-sunxi/Kconfig"
948
Barry Song156a0992012-08-23 13:41:58 +0800949source "arch/arm/mach-prima2/Kconfig"
950
Erik Gillingc5f80062010-01-21 16:53:02 -0800951source "arch/arm/mach-tegra/Kconfig"
952
Russell King95b8f202010-01-14 11:43:54 +0000953source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954
Russell King95b8f202010-01-14 11:43:54 +0000955source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
957source "arch/arm/mach-versatile/Kconfig"
958
Russell Kingceade892010-02-11 21:44:53 +0000959source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000960source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000961
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300962source "arch/arm/mach-vt8500/Kconfig"
963
wanzongshun7ec80dd2008-12-03 03:55:38 +0100964source "arch/arm/mach-w90x900/Kconfig"
965
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600966source "arch/arm/mach-zynq/Kconfig"
967
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968# Definitions to make life easier
969config ARCH_ACORN
970 bool
971
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100972config PLAT_IOP
973 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700974 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100975
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400976config PLAT_ORION
977 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100978 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100979 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100980 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200981 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400982
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200983config PLAT_ORION_LEGACY
984 bool
985 select PLAT_ORION
986
Eric Miaobd5ce432009-01-20 12:06:01 +0800987config PLAT_PXA
988 bool
989
Russell Kingf4b8b312010-01-14 12:48:06 +0000990config PLAT_VERSATILE
991 bool
992
Russell Kinge3887712010-01-14 13:30:16 +0000993config ARM_TIMER_SP804
994 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100995 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -0500996 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +0000997
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900998source "arch/arm/firmware/Kconfig"
999
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000source arch/arm/mm/Kconfig
1001
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001002config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001003 bool "Enable iWMMXt support"
1004 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1005 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001006 help
1007 Enable support for iWMMXt context switching at run time if
1008 running on a CPU that supports it.
1009
eric miao52108642010-12-13 09:42:34 +01001010config MULTI_IRQ_HANDLER
1011 bool
1012 help
1013 Allow each machine to specify it's own IRQ handler at run time.
1014
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001015if !MMU
1016source "arch/arm/Kconfig-nommu"
1017endif
1018
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001019config PJ4B_ERRATA_4742
1020 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1021 depends on CPU_PJ4B && MACH_ARMADA_370
1022 default y
1023 help
1024 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1025 Event (WFE) IDLE states, a specific timing sensitivity exists between
1026 the retiring WFI/WFE instructions and the newly issued subsequent
1027 instructions. This sensitivity can result in a CPU hang scenario.
1028 Workaround:
1029 The software must insert either a Data Synchronization Barrier (DSB)
1030 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1031 instruction
1032
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001033config ARM_ERRATA_326103
1034 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1035 depends on CPU_V6
1036 help
1037 Executing a SWP instruction to read-only memory does not set bit 11
1038 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1039 treat the access as a read, preventing a COW from occurring and
1040 causing the faulting task to livelock.
1041
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001042config ARM_ERRATA_411920
1043 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001044 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001045 help
1046 Invalidation of the Instruction Cache operation can
1047 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1048 It does not affect the MPCore. This option enables the ARM Ltd.
1049 recommended workaround.
1050
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001051config ARM_ERRATA_430973
1052 bool "ARM errata: Stale prediction on replaced interworking branch"
1053 depends on CPU_V7
1054 help
1055 This option enables the workaround for the 430973 Cortex-A8
1056 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1057 interworking branch is replaced with another code sequence at the
1058 same virtual address, whether due to self-modifying code or virtual
1059 to physical address re-mapping, Cortex-A8 does not recover from the
1060 stale interworking branch prediction. This results in Cortex-A8
1061 executing the new code sequence in the incorrect ARM or Thumb state.
1062 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1063 and also flushes the branch target cache at every context switch.
1064 Note that setting specific bits in the ACTLR register may not be
1065 available in non-secure mode.
1066
Catalin Marinas855c5512009-04-30 17:06:15 +01001067config ARM_ERRATA_458693
1068 bool "ARM errata: Processor deadlock when a false hazard is created"
1069 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001070 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001071 help
1072 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1073 erratum. For very specific sequences of memory operations, it is
1074 possible for a hazard condition intended for a cache line to instead
1075 be incorrectly associated with a different cache line. This false
1076 hazard might then cause a processor deadlock. The workaround enables
1077 the L1 caching of the NEON accesses and disables the PLD instruction
1078 in the ACTLR register. Note that setting specific bits in the ACTLR
1079 register may not be available in non-secure mode.
1080
Catalin Marinas0516e462009-04-30 17:06:20 +01001081config ARM_ERRATA_460075
1082 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1083 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001084 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001085 help
1086 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1087 erratum. Any asynchronous access to the L2 cache may encounter a
1088 situation in which recent store transactions to the L2 cache are lost
1089 and overwritten with stale memory contents from external memory. The
1090 workaround disables the write-allocate mode for the L2 cache via the
1091 ACTLR register. Note that setting specific bits in the ACTLR register
1092 may not be available in non-secure mode.
1093
Will Deacon9f050272010-09-14 09:51:43 +01001094config ARM_ERRATA_742230
1095 bool "ARM errata: DMB operation may be faulty"
1096 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001097 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001098 help
1099 This option enables the workaround for the 742230 Cortex-A9
1100 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1101 between two write operations may not ensure the correct visibility
1102 ordering of the two writes. This workaround sets a specific bit in
1103 the diagnostic register of the Cortex-A9 which causes the DMB
1104 instruction to behave as a DSB, ensuring the correct behaviour of
1105 the two writes.
1106
Will Deacona672e992010-09-14 09:53:02 +01001107config ARM_ERRATA_742231
1108 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1109 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001110 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001111 help
1112 This option enables the workaround for the 742231 Cortex-A9
1113 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1114 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1115 accessing some data located in the same cache line, may get corrupted
1116 data due to bad handling of the address hazard when the line gets
1117 replaced from one of the CPUs at the same time as another CPU is
1118 accessing it. This workaround sets specific bits in the diagnostic
1119 register of the Cortex-A9 which reduces the linefill issuing
1120 capabilities of the processor.
1121
Jon Medhurst69155792013-06-07 10:35:35 +01001122config ARM_ERRATA_643719
1123 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1124 depends on CPU_V7 && SMP
1125 help
1126 This option enables the workaround for the 643719 Cortex-A9 (prior to
1127 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1128 register returns zero when it should return one. The workaround
1129 corrects this value, ensuring cache maintenance operations which use
1130 it behave as intended and avoiding data corruption.
1131
Will Deaconcdf357f2010-08-05 11:20:51 +01001132config ARM_ERRATA_720789
1133 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001134 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001135 help
1136 This option enables the workaround for the 720789 Cortex-A9 (prior to
1137 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1138 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1139 As a consequence of this erratum, some TLB entries which should be
1140 invalidated are not, resulting in an incoherency in the system page
1141 tables. The workaround changes the TLB flushing routines to invalidate
1142 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001143
1144config ARM_ERRATA_743622
1145 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1146 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001147 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001148 help
1149 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001150 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001151 optimisation in the Cortex-A9 Store Buffer may lead to data
1152 corruption. This workaround sets a specific bit in the diagnostic
1153 register of the Cortex-A9 which disables the Store Buffer
1154 optimisation, preventing the defect from occurring. This has no
1155 visible impact on the overall performance or power consumption of the
1156 processor.
1157
Will Deacon9a27c272011-02-18 16:36:35 +01001158config ARM_ERRATA_751472
1159 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001160 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001161 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001162 help
1163 This option enables the workaround for the 751472 Cortex-A9 (prior
1164 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1165 completion of a following broadcasted operation if the second
1166 operation is received by a CPU before the ICIALLUIS has completed,
1167 potentially leading to corrupted entries in the cache or TLB.
1168
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001169config ARM_ERRATA_754322
1170 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1171 depends on CPU_V7
1172 help
1173 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1174 r3p*) erratum. A speculative memory access may cause a page table walk
1175 which starts prior to an ASID switch but completes afterwards. This
1176 can populate the micro-TLB with a stale entry which may be hit with
1177 the new ASID. This workaround places two dsb instructions in the mm
1178 switching code so that no page table walks can cross the ASID switch.
1179
Will Deacon5dab26af2011-03-04 12:38:54 +01001180config ARM_ERRATA_754327
1181 bool "ARM errata: no automatic Store Buffer drain"
1182 depends on CPU_V7 && SMP
1183 help
1184 This option enables the workaround for the 754327 Cortex-A9 (prior to
1185 r2p0) erratum. The Store Buffer does not have any automatic draining
1186 mechanism and therefore a livelock may occur if an external agent
1187 continuously polls a memory location waiting to observe an update.
1188 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1189 written polling loops from denying visibility of updates to memory.
1190
Catalin Marinas145e10e2011-08-15 11:04:41 +01001191config ARM_ERRATA_364296
1192 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001193 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001194 help
1195 This options enables the workaround for the 364296 ARM1136
1196 r0p2 erratum (possible cache data corruption with
1197 hit-under-miss enabled). It sets the undocumented bit 31 in
1198 the auxiliary control register and the FI bit in the control
1199 register, thus disabling hit-under-miss without putting the
1200 processor into full low interrupt latency mode. ARM11MPCore
1201 is not affected.
1202
Will Deaconf630c1b2011-09-15 11:45:15 +01001203config ARM_ERRATA_764369
1204 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1205 depends on CPU_V7 && SMP
1206 help
1207 This option enables the workaround for erratum 764369
1208 affecting Cortex-A9 MPCore with two or more processors (all
1209 current revisions). Under certain timing circumstances, a data
1210 cache line maintenance operation by MVA targeting an Inner
1211 Shareable memory region may fail to proceed up to either the
1212 Point of Coherency or to the Point of Unification of the
1213 system. This workaround adds a DSB instruction before the
1214 relevant cache maintenance functions and sets a specific bit
1215 in the diagnostic control register of the SCU.
1216
Simon Horman7253b852012-09-28 02:12:45 +01001217config ARM_ERRATA_775420
1218 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1219 depends on CPU_V7
1220 help
1221 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1222 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1223 operation aborts with MMU exception, it might cause the processor
1224 to deadlock. This workaround puts DSB before executing ISB if
1225 an abort may occur on cache maintenance.
1226
Catalin Marinas93dc6882013-03-26 23:35:04 +01001227config ARM_ERRATA_798181
1228 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1229 depends on CPU_V7 && SMP
1230 help
1231 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1232 adequately shooting down all use of the old entries. This
1233 option enables the Linux kernel workaround for this erratum
1234 which sends an IPI to the CPUs that are running the same ASID
1235 as the one being invalidated.
1236
Will Deacon84b65042013-08-20 17:29:55 +01001237config ARM_ERRATA_773022
1238 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1239 depends on CPU_V7
1240 help
1241 This option enables the workaround for the 773022 Cortex-A15
1242 (up to r0p4) erratum. In certain rare sequences of code, the
1243 loop buffer may deliver incorrect instructions. This
1244 workaround disables the loop buffer to avoid the erratum.
1245
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246endmenu
1247
1248source "arch/arm/common/Kconfig"
1249
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250menu "Bus support"
1251
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252config ISA
1253 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 help
1255 Find out whether you have ISA slots on your motherboard. ISA is the
1256 name of a bus system, i.e. the way the CPU talks to the other stuff
1257 inside your box. Other bus systems are PCI, EISA, MicroChannel
1258 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1259 newer boards don't support it. If you have ISA, say Y, otherwise N.
1260
Russell King065909b2006-01-04 15:44:16 +00001261# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262config ISA_DMA
1263 bool
Russell King065909b2006-01-04 15:44:16 +00001264 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265
Russell King065909b2006-01-04 15:44:16 +00001266# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001267config ISA_DMA_API
1268 bool
Al Viro5cae8412005-05-04 05:39:22 +01001269
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001271 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 help
1273 Find out whether you have a PCI motherboard. PCI is the name of a
1274 bus system, i.e. the way the CPU talks to the other stuff inside
1275 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1276 VESA. If you have PCI, say Y, otherwise N.
1277
Anton Vorontsov52882172010-04-19 13:20:49 +01001278config PCI_DOMAINS
1279 bool
1280 depends on PCI
1281
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001282config PCI_DOMAINS_GENERIC
1283 def_bool PCI_DOMAINS
1284
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001285config PCI_NANOENGINE
1286 bool "BSE nanoEngine PCI support"
1287 depends on SA1100_NANOENGINE
1288 help
1289 Enable PCI on the BSE nanoEngine board.
1290
Matthew Wilcox36e23592007-07-10 10:54:40 -06001291config PCI_SYSCALL
1292 def_bool PCI
1293
Mike Rapoporta0113a92007-11-25 08:55:34 +01001294config PCI_HOST_ITE8152
1295 bool
1296 depends on PCI && MACH_ARMCORE
1297 default y
1298 select DMABOUNCE
1299
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001301source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302
1303source "drivers/pcmcia/Kconfig"
1304
1305endmenu
1306
1307menu "Kernel Features"
1308
Dave Martin3b556582011-12-07 15:38:04 +00001309config HAVE_SMP
1310 bool
1311 help
1312 This option should be selected by machines which have an SMP-
1313 capable CPU.
1314
1315 The only effect of this option is to make the SMP-related
1316 options available to the user for configuration.
1317
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001319 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001320 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001321 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001322 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001323 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 help
1325 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001326 a system with only one CPU, say N. If you have a system with more
1327 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328
Robert Graffham4a474152014-01-23 15:55:29 -08001329 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001331 you say Y here, the kernel will run on many, but not all,
1332 uniprocessor machines. On a uniprocessor machine, the kernel
1333 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334
Paul Bolle395cf962011-08-15 02:02:26 +02001335 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001337 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338
1339 If you don't know what to do here, say N.
1340
Russell Kingf00ec482010-09-04 10:47:48 +01001341config SMP_ON_UP
1342 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001343 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001344 default y
1345 help
1346 SMP kernels contain instructions which fail on non-SMP processors.
1347 Enabling this option allows the kernel to modify itself to make
1348 these instructions safe. Disabling it allows about 1K of space
1349 savings.
1350
1351 If you don't know what to do here, say Y.
1352
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001353config ARM_CPU_TOPOLOGY
1354 bool "Support cpu topology definition"
1355 depends on SMP && CPU_V7
1356 default y
1357 help
1358 Support ARM cpu topology definition. The MPIDR register defines
1359 affinity between processors which is then used to describe the cpu
1360 topology of an ARM System.
1361
1362config SCHED_MC
1363 bool "Multi-core scheduler support"
1364 depends on ARM_CPU_TOPOLOGY
1365 help
1366 Multi-core scheduler support improves the CPU scheduler's decision
1367 making when dealing with multi-core CPU chips at a cost of slightly
1368 increased overhead in some places. If unsure say N here.
1369
1370config SCHED_SMT
1371 bool "SMT scheduler support"
1372 depends on ARM_CPU_TOPOLOGY
1373 help
1374 Improves the CPU scheduler's decision making when dealing with
1375 MultiThreading at a cost of slightly increased overhead in some
1376 places. If unsure say N here.
1377
Russell Kinga8cbcd92009-05-16 11:51:14 +01001378config HAVE_ARM_SCU
1379 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001380 help
1381 This option enables support for the ARM system coherency unit
1382
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001383config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001384 bool "Architected timer support"
1385 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001386 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001387 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001388 help
1389 This option enables support for the ARM architected timer
1390
Russell Kingf32f4ce2009-05-16 12:14:21 +01001391config HAVE_ARM_TWD
1392 bool
1393 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001394 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001395 help
1396 This options enables support for the ARM timer and watchdog unit
1397
Nicolas Pitree8db2882012-04-12 02:45:22 -04001398config MCPM
1399 bool "Multi-Cluster Power Management"
1400 depends on CPU_V7 && SMP
1401 help
1402 This option provides the common power management infrastructure
1403 for (multi-)cluster based systems, such as big.LITTLE based
1404 systems.
1405
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001406config MCPM_QUAD_CLUSTER
1407 bool
1408 depends on MCPM
1409 help
1410 To avoid wasting resources unnecessarily, MCPM only supports up
1411 to 2 clusters by default.
1412 Platforms with 3 or 4 clusters that use MCPM must select this
1413 option to allow the additional clusters to be managed.
1414
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001415config BIG_LITTLE
1416 bool "big.LITTLE support (Experimental)"
1417 depends on CPU_V7 && SMP
1418 select MCPM
1419 help
1420 This option enables support selections for the big.LITTLE
1421 system architecture.
1422
1423config BL_SWITCHER
1424 bool "big.LITTLE switcher support"
1425 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001426 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001427 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001428 help
1429 The big.LITTLE "switcher" provides the core functionality to
1430 transparently handle transition between a cluster of A15's
1431 and a cluster of A7's in a big.LITTLE system.
1432
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001433config BL_SWITCHER_DUMMY_IF
1434 tristate "Simple big.LITTLE switcher user interface"
1435 depends on BL_SWITCHER && DEBUG_KERNEL
1436 help
1437 This is a simple and dummy char dev interface to control
1438 the big.LITTLE switcher core code. It is meant for
1439 debugging purposes only.
1440
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001441choice
1442 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001443 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001444 default VMSPLIT_3G
1445 help
1446 Select the desired split between kernel and user memory.
1447
1448 If you are not absolutely sure what you are doing, leave this
1449 option alone!
1450
1451 config VMSPLIT_3G
1452 bool "3G/1G user/kernel split"
1453 config VMSPLIT_2G
1454 bool "2G/2G user/kernel split"
1455 config VMSPLIT_1G
1456 bool "1G/3G user/kernel split"
1457endchoice
1458
1459config PAGE_OFFSET
1460 hex
Russell King006fa252014-02-26 19:40:46 +00001461 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001462 default 0x40000000 if VMSPLIT_1G
1463 default 0x80000000 if VMSPLIT_2G
1464 default 0xC0000000
1465
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466config NR_CPUS
1467 int "Maximum number of CPUs (2-32)"
1468 range 2 32
1469 depends on SMP
1470 default "4"
1471
Russell Kinga054a812005-11-02 22:24:33 +00001472config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001473 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001474 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001475 help
1476 Say Y here to experiment with turning CPUs off and on. CPUs
1477 can be controlled through /sys/devices/system/cpu.
1478
Will Deacon2bdd4242012-12-12 19:20:52 +00001479config ARM_PSCI
1480 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1481 depends on CPU_V7
1482 help
1483 Say Y here if you want Linux to communicate with system firmware
1484 implementing the PSCI specification for CPU-centric power
1485 management operations described in ARM document number ARM DEN
1486 0022A ("Power State Coordination Interface System Software on
1487 ARM processors").
1488
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001489# The GPIO number here must be sorted by descending number. In case of
1490# a multiplatform kernel, we just want the highest value required by the
1491# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001492config ARCH_NR_GPIO
1493 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001494 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001495 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1496 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001497 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001498 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001499 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001500 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001501 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001502 default 0
1503 help
1504 Maximum number of GPIOs in the system.
1505
1506 If unsure, leave the default value.
1507
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001508source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509
Russell Kingc9218b12013-04-27 23:31:10 +01001510config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001511 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001512 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001513 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001514 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001515 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001516 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001517
1518choice
Russell King47d84682013-09-10 23:47:55 +01001519 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001520 prompt "Timer frequency"
1521
1522config HZ_100
1523 bool "100 Hz"
1524
1525config HZ_200
1526 bool "200 Hz"
1527
1528config HZ_250
1529 bool "250 Hz"
1530
1531config HZ_300
1532 bool "300 Hz"
1533
1534config HZ_500
1535 bool "500 Hz"
1536
1537config HZ_1000
1538 bool "1000 Hz"
1539
1540endchoice
1541
1542config HZ
1543 int
Russell King47d84682013-09-10 23:47:55 +01001544 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001545 default 100 if HZ_100
1546 default 200 if HZ_200
1547 default 250 if HZ_250
1548 default 300 if HZ_300
1549 default 500 if HZ_500
1550 default 1000
1551
1552config SCHED_HRTICK
1553 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001554
Catalin Marinas16c79652009-07-24 12:33:02 +01001555config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001556 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001557 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001558 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001559 select AEABI
1560 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001561 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001562 help
1563 By enabling this option, the kernel will be compiled in
1564 Thumb-2 mode. A compiler/assembler that understand the unified
1565 ARM-Thumb syntax is needed.
1566
1567 If unsure, say N.
1568
Dave Martin6f685c52011-03-03 11:41:12 +01001569config THUMB2_AVOID_R_ARM_THM_JUMP11
1570 bool "Work around buggy Thumb-2 short branch relocations in gas"
1571 depends on THUMB2_KERNEL && MODULES
1572 default y
1573 help
1574 Various binutils versions can resolve Thumb-2 branches to
1575 locally-defined, preemptible global symbols as short-range "b.n"
1576 branch instructions.
1577
1578 This is a problem, because there's no guarantee the final
1579 destination of the symbol, or any candidate locations for a
1580 trampoline, are within range of the branch. For this reason, the
1581 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1582 relocation in modules at all, and it makes little sense to add
1583 support.
1584
1585 The symptom is that the kernel fails with an "unsupported
1586 relocation" error when loading some modules.
1587
1588 Until fixed tools are available, passing
1589 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1590 code which hits this problem, at the cost of a bit of extra runtime
1591 stack usage in some cases.
1592
1593 The problem is described in more detail at:
1594 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1595
1596 Only Thumb-2 kernels are affected.
1597
1598 Unless you are sure your tools don't have this problem, say Y.
1599
Catalin Marinas0becb082009-07-24 12:32:53 +01001600config ARM_ASM_UNIFIED
1601 bool
1602
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001603config AEABI
1604 bool "Use the ARM EABI to compile the kernel"
1605 help
1606 This option allows for the kernel to be compiled using the latest
1607 ARM ABI (aka EABI). This is only useful if you are using a user
1608 space environment that is also compiled with EABI.
1609
1610 Since there are major incompatibilities between the legacy ABI and
1611 EABI, especially with regard to structure member alignment, this
1612 option also changes the kernel syscall calling convention to
1613 disambiguate both ABIs and allow for backward compatibility support
1614 (selected with CONFIG_OABI_COMPAT).
1615
1616 To use this you need GCC version 4.0.0 or later.
1617
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001618config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001619 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001620 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001621 help
1622 This option preserves the old syscall interface along with the
1623 new (ARM EABI) one. It also provides a compatibility layer to
1624 intercept syscalls that have structure arguments which layout
1625 in memory differs between the legacy ABI and the new ARM EABI
1626 (only for non "thumb" binaries). This option adds a tiny
1627 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001628
1629 The seccomp filter system will not be available when this is
1630 selected, since there is no way yet to sensibly distinguish
1631 between calling conventions during filtering.
1632
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001633 If you know you'll be using only pure EABI user space then you
1634 can say N here. If this option is not selected and you attempt
1635 to execute a legacy ABI binary then the result will be
1636 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001637 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001638
Mel Gormaneb335752009-05-13 17:34:48 +01001639config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001640 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001641
Russell King05944d72006-11-30 20:43:51 +00001642config ARCH_SPARSEMEM_ENABLE
1643 bool
1644
Russell King07a2f732008-10-01 21:39:58 +01001645config ARCH_SPARSEMEM_DEFAULT
1646 def_bool ARCH_SPARSEMEM_ENABLE
1647
Russell King05944d72006-11-30 20:43:51 +00001648config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001649 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001650
Will Deacon7b7bf492011-05-19 13:21:14 +01001651config HAVE_ARCH_PFN_VALID
1652 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1653
Steve Capperb8cd51a2014-10-09 15:29:20 -07001654config HAVE_GENERIC_RCU_GUP
1655 def_bool y
1656 depends on ARM_LPAE
1657
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001658config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001659 bool "High Memory Support"
1660 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001661 help
1662 The address space of ARM processors is only 4 Gigabytes large
1663 and it has to accommodate user address space, kernel address
1664 space as well as some memory mapped IO. That means that, if you
1665 have a large amount of physical memory and/or IO, not all of the
1666 memory can be "permanently mapped" by the kernel. The physical
1667 memory that is not permanently mapped is called "high memory".
1668
1669 Depending on the selected kernel/user memory split, minimum
1670 vmalloc space and actual amount of RAM, you may not need this
1671 option which should result in a slightly faster kernel.
1672
1673 If unsure, say n.
1674
Russell King65cec8e2009-08-17 20:02:06 +01001675config HIGHPTE
1676 bool "Allocate 2nd-level pagetables from highmem"
1677 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001678
Jamie Iles1b8873a2010-02-02 20:25:44 +01001679config HW_PERF_EVENTS
1680 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001681 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001682 default y
1683 help
1684 Enable hardware performance counter support for perf events. If
1685 disabled, perf events will use software events only.
1686
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001687config SYS_SUPPORTS_HUGETLBFS
1688 def_bool y
1689 depends on ARM_LPAE
1690
Catalin Marinas8d962502012-07-25 14:39:26 +01001691config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1692 def_bool y
1693 depends on ARM_LPAE
1694
Steven Capper4bfab202013-07-26 14:58:22 +01001695config ARCH_WANT_GENERAL_HUGETLB
1696 def_bool y
1697
Dave Hansen3f22ab22005-06-23 00:07:43 -07001698source "mm/Kconfig"
1699
Magnus Dammc1b2d972010-07-05 10:00:11 +01001700config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001701 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1702 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001703 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001704 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001705 default "11"
1706 help
1707 The kernel memory allocator divides physically contiguous memory
1708 blocks into "zones", where each zone is a power of two number of
1709 pages. This option selects the largest power of two that the kernel
1710 keeps in the memory allocator. If you need to allocate very large
1711 blocks of physically contiguous memory, then you may need to
1712 increase this value.
1713
1714 This config option is actually maximum order plus one. For example,
1715 a value of 11 means that the largest free memory block is 2^10 pages.
1716
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717config ALIGNMENT_TRAP
1718 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001719 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001721 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001722 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001723 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001724 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1725 address divisible by 4. On 32-bit ARM processors, these non-aligned
1726 fetch/store instructions will be emulated in software if you say
1727 here, which has a severe performance impact. This is necessary for
1728 correct operation of some network protocols. With an IP-only
1729 configuration it is safe to say N, otherwise say Y.
1730
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001731config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001732 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1733 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001734 default y if CPU_FEROCEON
1735 help
1736 Implement faster copy_to_user and clear_user methods for CPU
1737 cores where a 8-word STM instruction give significantly higher
1738 memory write throughput than a sequence of individual 32bit stores.
1739
1740 A possible side effect is a slight increase in scheduling latency
1741 between threads sharing the same address space if they invoke
1742 such copy operations with large buffers.
1743
1744 However, if the CPU data cache is using a write-allocate mode,
1745 this option is unlikely to provide any performance gain.
1746
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001747config SECCOMP
1748 bool
1749 prompt "Enable seccomp to safely compute untrusted bytecode"
1750 ---help---
1751 This kernel feature is useful for number crunching applications
1752 that may need to compute untrusted bytecode during their
1753 execution. By using pipes or other transports made available to
1754 the process as file descriptors supporting the read/write
1755 syscalls, it's possible to isolate those applications in
1756 their own address space using seccomp. Once seccomp is
1757 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1758 and the task is only allowed to execute a few safe syscalls
1759 defined by each seccomp mode.
1760
Stefano Stabellini06e62952013-10-15 15:47:14 +00001761config SWIOTLB
1762 def_bool y
1763
1764config IOMMU_HELPER
1765 def_bool SWIOTLB
1766
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001767config XEN_DOM0
1768 def_bool y
1769 depends on XEN
1770
1771config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001772 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001773 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001774 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001775 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001776 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001777 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001778 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001779 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001780 help
1781 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1782
Linus Torvalds1da177e2005-04-16 15:20:36 -07001783endmenu
1784
1785menu "Boot options"
1786
Grant Likely9eb8f672011-04-28 14:27:20 -06001787config USE_OF
1788 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001789 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001790 select OF
1791 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001792 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001793 help
1794 Include support for flattened device tree machine descriptions.
1795
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001796config ATAGS
1797 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1798 default y
1799 help
1800 This is the traditional way of passing data to the kernel at boot
1801 time. If you are solely relying on the flattened device tree (or
1802 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1803 to remove ATAGS support from your kernel binary. If unsure,
1804 leave this to y.
1805
1806config DEPRECATED_PARAM_STRUCT
1807 bool "Provide old way to pass kernel parameters"
1808 depends on ATAGS
1809 help
1810 This was deprecated in 2001 and announced to live on for 5 years.
1811 Some old boot loaders still use this way.
1812
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813# Compressed boot loader in ROM. Yes, we really want to ask about
1814# TEXT and BSS so we preserve their values in the config files.
1815config ZBOOT_ROM_TEXT
1816 hex "Compressed ROM boot loader base address"
1817 default "0"
1818 help
1819 The physical address at which the ROM-able zImage is to be
1820 placed in the target. Platforms which normally make use of
1821 ROM-able zImage formats normally set this to a suitable
1822 value in their defconfig file.
1823
1824 If ZBOOT_ROM is not enabled, this has no effect.
1825
1826config ZBOOT_ROM_BSS
1827 hex "Compressed ROM boot loader BSS address"
1828 default "0"
1829 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001830 The base address of an area of read/write memory in the target
1831 for the ROM-able zImage which must be available while the
1832 decompressor is running. It must be large enough to hold the
1833 entire decompressed kernel plus an additional 128 KiB.
1834 Platforms which normally make use of ROM-able zImage formats
1835 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836
1837 If ZBOOT_ROM is not enabled, this has no effect.
1838
1839config ZBOOT_ROM
1840 bool "Compressed boot loader in ROM/flash"
1841 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001842 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843 help
1844 Say Y here if you intend to execute your compressed kernel image
1845 (zImage) directly from ROM or flash. If unsure, say N.
1846
Simon Horman090ab3f2011-04-26 06:29:53 +01001847choice
1848 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001849 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001850 default ZBOOT_ROM_NONE
1851 help
1852 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001853 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001854 kernel image to an MMC or SD card and boot the kernel straight
1855 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001856 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001857 rest the kernel image to RAM.
1858
1859config ZBOOT_ROM_NONE
1860 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1861 help
1862 Do not load image from SD or MMC
1863
Simon Hormanf45b1142011-01-11 04:01:08 +01001864config ZBOOT_ROM_MMCIF
1865 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001866 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001867 Load image from MMCIF hardware block.
1868
1869config ZBOOT_ROM_SH_MOBILE_SDHI
1870 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1871 help
1872 Load image from SDHI hardware block
1873
1874endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001875
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001876config ARM_APPENDED_DTB
1877 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001878 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001879 help
1880 With this option, the boot code will look for a device tree binary
1881 (DTB) appended to zImage
1882 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1883
1884 This is meant as a backward compatibility convenience for those
1885 systems with a bootloader that can't be upgraded to accommodate
1886 the documented boot protocol using a device tree.
1887
1888 Beware that there is very little in terms of protection against
1889 this option being confused by leftover garbage in memory that might
1890 look like a DTB header after a reboot if no actual DTB is appended
1891 to zImage. Do not leave this option active in a production kernel
1892 if you don't intend to always append a DTB. Proper passing of the
1893 location into r2 of a bootloader provided DTB is always preferable
1894 to this option.
1895
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001896config ARM_ATAG_DTB_COMPAT
1897 bool "Supplement the appended DTB with traditional ATAG information"
1898 depends on ARM_APPENDED_DTB
1899 help
1900 Some old bootloaders can't be updated to a DTB capable one, yet
1901 they provide ATAGs with memory configuration, the ramdisk address,
1902 the kernel cmdline string, etc. Such information is dynamically
1903 provided by the bootloader and can't always be stored in a static
1904 DTB. To allow a device tree enabled kernel to be used with such
1905 bootloaders, this option allows zImage to extract the information
1906 from the ATAG list and store it at run time into the appended DTB.
1907
Genoud Richardd0f34a112012-06-26 16:37:59 +01001908choice
1909 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1910 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1911
1912config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1913 bool "Use bootloader kernel arguments if available"
1914 help
1915 Uses the command-line options passed by the boot loader instead of
1916 the device tree bootargs property. If the boot loader doesn't provide
1917 any, the device tree bootargs property will be used.
1918
1919config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1920 bool "Extend with bootloader kernel arguments"
1921 help
1922 The command-line arguments provided by the boot loader will be
1923 appended to the the device tree bootargs property.
1924
1925endchoice
1926
Linus Torvalds1da177e2005-04-16 15:20:36 -07001927config CMDLINE
1928 string "Default kernel command string"
1929 default ""
1930 help
1931 On some architectures (EBSA110 and CATS), there is currently no way
1932 for the boot loader to pass arguments to the kernel. For these
1933 architectures, you should supply some command-line options at build
1934 time by entering them here. As a minimum, you should specify the
1935 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1936
Victor Boivie4394c122011-05-04 17:07:55 +01001937choice
1938 prompt "Kernel command line type" if CMDLINE != ""
1939 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001940 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001941
1942config CMDLINE_FROM_BOOTLOADER
1943 bool "Use bootloader kernel arguments if available"
1944 help
1945 Uses the command-line options passed by the boot loader. If
1946 the boot loader doesn't provide any, the default kernel command
1947 string provided in CMDLINE will be used.
1948
1949config CMDLINE_EXTEND
1950 bool "Extend bootloader kernel arguments"
1951 help
1952 The command-line arguments provided by the boot loader will be
1953 appended to the default kernel command string.
1954
Alexander Holler92d20402010-02-16 19:04:53 +01001955config CMDLINE_FORCE
1956 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001957 help
1958 Always use the default kernel command string, even if the boot
1959 loader passes other arguments to the kernel.
1960 This is useful if you cannot or don't want to change the
1961 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001962endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001963
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964config XIP_KERNEL
1965 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001966 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967 help
1968 Execute-In-Place allows the kernel to run from non-volatile storage
1969 directly addressable by the CPU, such as NOR flash. This saves RAM
1970 space since the text section of the kernel is not loaded from flash
1971 to RAM. Read-write sections, such as the data section and stack,
1972 are still copied to RAM. The XIP kernel is not compressed since
1973 it has to run directly from flash, so it will take more space to
1974 store it. The flash address used to link the kernel object files,
1975 and for storing it, is configuration dependent. Therefore, if you
1976 say Y here, you must know the proper physical address where to
1977 store the kernel image depending on your own flash memory usage.
1978
1979 Also note that the make target becomes "make xipImage" rather than
1980 "make zImage" or "make Image". The final kernel binary to put in
1981 ROM memory will be arch/arm/boot/xipImage.
1982
1983 If unsure, say N.
1984
1985config XIP_PHYS_ADDR
1986 hex "XIP Kernel Physical Location"
1987 depends on XIP_KERNEL
1988 default "0x00080000"
1989 help
1990 This is the physical address in your flash memory the kernel will
1991 be linked for and stored to. This address is dependent on your
1992 own flash usage.
1993
Richard Purdiec587e4a2007-02-06 21:29:00 +01001994config KEXEC
1995 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001996 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001997 help
1998 kexec is a system call that implements the ability to shutdown your
1999 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002000 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002001 you can start any kernel with it, not just Linux.
2002
2003 It is an ongoing process to be certain the hardware in a machine
2004 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002005 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002006
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002007config ATAGS_PROC
2008 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002009 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002010 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002011 help
2012 Should the atags used to boot the kernel be exported in an "atags"
2013 file in procfs. Useful with kexec.
2014
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002015config CRASH_DUMP
2016 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002017 help
2018 Generate crash dump after being started by kexec. This should
2019 be normally only set in special crash dump kernels which are
2020 loaded in the main kernel with kexec-tools into a specially
2021 reserved region and then later executed after a crash by
2022 kdump/kexec. The crash dump kernel must be compiled to a
2023 memory address not used by the main kernel
2024
2025 For more details see Documentation/kdump/kdump.txt
2026
Eric Miaoe69edc792010-07-05 15:56:50 +02002027config AUTO_ZRELADDR
2028 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002029 help
2030 ZRELADDR is the physical address where the decompressed kernel
2031 image will be placed. If AUTO_ZRELADDR is selected, the address
2032 will be determined at run-time by masking the current IP with
2033 0xf8000000. This assumes the zImage being placed in the first 128MB
2034 from start of memory.
2035
Linus Torvalds1da177e2005-04-16 15:20:36 -07002036endmenu
2037
Russell Kingac9d7ef2008-08-18 17:26:00 +01002038menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039
Linus Torvalds1da177e2005-04-16 15:20:36 -07002040source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041
Russell Kingac9d7ef2008-08-18 17:26:00 +01002042source "drivers/cpuidle/Kconfig"
2043
2044endmenu
2045
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046menu "Floating point emulation"
2047
2048comment "At least one emulation must be selected"
2049
2050config FPE_NWFPE
2051 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002052 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053 ---help---
2054 Say Y to include the NWFPE floating point emulator in the kernel.
2055 This is necessary to run most binaries. Linux does not currently
2056 support floating point hardware so you need to say Y here even if
2057 your machine has an FPA or floating point co-processor podule.
2058
2059 You may say N here if you are going to load the Acorn FPEmulator
2060 early in the bootup.
2061
2062config FPE_NWFPE_XP
2063 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002064 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065 help
2066 Say Y to include 80-bit support in the kernel floating-point
2067 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2068 Note that gcc does not generate 80-bit operations by default,
2069 so in most cases this option only enlarges the size of the
2070 floating point emulator without any good reason.
2071
2072 You almost surely want to say N here.
2073
2074config FPE_FASTFPE
2075 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002076 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 ---help---
2078 Say Y here to include the FAST floating point emulator in the kernel.
2079 This is an experimental much faster emulator which now also has full
2080 precision for the mantissa. It does not support any exceptions.
2081 It is very simple, and approximately 3-6 times faster than NWFPE.
2082
2083 It should be sufficient for most programs. It may be not suitable
2084 for scientific calculations, but you have to check this for yourself.
2085 If you do not feel you need a faster FP emulation you should better
2086 choose NWFPE.
2087
2088config VFP
2089 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002090 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091 help
2092 Say Y to include VFP support code in the kernel. This is needed
2093 if your hardware includes a VFP unit.
2094
2095 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2096 release notes and additional status information.
2097
2098 Say N if your target does not have VFP hardware.
2099
Catalin Marinas25ebee02007-09-25 15:22:24 +01002100config VFPv3
2101 bool
2102 depends on VFP
2103 default y if CPU_V7
2104
Catalin Marinasb5872db2008-01-10 19:16:17 +01002105config NEON
2106 bool "Advanced SIMD (NEON) Extension support"
2107 depends on VFPv3 && CPU_V7
2108 help
2109 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2110 Extension.
2111
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002112config KERNEL_MODE_NEON
2113 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002114 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002115 help
2116 Say Y to include support for NEON in kernel mode.
2117
Linus Torvalds1da177e2005-04-16 15:20:36 -07002118endmenu
2119
2120menu "Userspace binary formats"
2121
2122source "fs/Kconfig.binfmt"
2123
2124config ARTHUR
2125 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002126 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127 help
2128 Say Y here to include the kernel code necessary if you want to run
2129 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2130 experimental; if this sounds frightening, say N and sleep in peace.
2131 You can also say M here to compile this support as a module (which
2132 will be called arthur).
2133
2134endmenu
2135
2136menu "Power management options"
2137
Russell Kingeceab4a2005-11-15 11:31:41 +00002138source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002139
Johannes Bergf4cb5702007-12-08 02:14:00 +01002140config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002141 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002142 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002143 def_bool y
2144
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002145config ARM_CPU_SUSPEND
2146 def_bool PM_SLEEP
2147
Sebastian Capella603fb422014-03-25 01:20:29 +01002148config ARCH_HIBERNATION_POSSIBLE
2149 bool
2150 depends on MMU
2151 default y if ARCH_SUSPEND_POSSIBLE
2152
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153endmenu
2154
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002155source "net/Kconfig"
2156
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002157source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002158
2159source "fs/Kconfig"
2160
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161source "arch/arm/Kconfig.debug"
2162
2163source "security/Kconfig"
2164
2165source "crypto/Kconfig"
2166
2167source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002168
2169source "arch/arm/kvm/Kconfig"