blob: 1c5021002fe40b06a2e57daad459bf1b4181b822 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Catalin Marinas74634492012-07-30 14:41:09 -07004 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Kees Cook2b68f6c2015-04-14 15:48:00 -07005 select ARCH_HAS_ELF_RANDOMIZE
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
Borislav Petkovb01aec92015-05-21 19:59:31 +020018 select EDAC_SUPPORT
19 select EDAC_ATOMIC_SCRUB
Laura Abbott36d0fd22014-10-09 15:26:42 -070020 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010021 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010023 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010024 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
Geert Uytterhoeven7c070052015-04-01 13:37:11 +010026 select GENERIC_IRQ_SHOW_LEVEL
Russell Kingb1b3f492012-10-06 17:12:25 +010027 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070028 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010029 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_STRNCPY_FROM_USER
31 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010032 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010033 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090034 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010035 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Arnd Bergmanncfeec792015-05-26 15:38:01 +010036 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32
37 select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32
Kees Cook91702172013-11-09 00:51:56 +010038 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010039 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010040 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010041 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010042 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010043 select HAVE_C_RECORDMCOUNT
44 select HAVE_DEBUG_KMEMLEAK
45 select HAVE_DMA_API_DEBUG
46 select HAVE_DMA_ATTRS
47 select HAVE_DMA_CONTIGUOUS if MMU
Arnd Bergmanncfeec792015-05-26 15:38:01 +010048 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32
Will Deacondce5c9e2013-12-17 19:50:16 +010049 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010050 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
51 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
52 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
53 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
55 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010056 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010057 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070058 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010059 select HAVE_KERNEL_LZMA
60 select HAVE_KERNEL_LZO
61 select HAVE_KERNEL_XZ
Arnd Bergmanncb1293e2015-05-26 15:40:44 +010062 select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080063 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010064 select HAVE_MEMBLOCK
Ard Biesheuvel7d485f62014-11-24 16:54:35 +010065 select HAVE_MOD_ARCH_SPECIFIC
Russell Kingb1b3f492012-10-06 17:12:25 +010066 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080067 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010068 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010069 select HAVE_PERF_REGS
70 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070071 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010072 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010073 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070074 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070075 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010076 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010077 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040078 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010079 select OLD_SIGACTION
80 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010081 select PERF_USE_VMALLOC
82 select RTC_LIB
83 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010084 # Above selects are sorted alphabetically; please add new ones
85 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 help
87 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000088 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000090 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 Europe. There is an ARM Linux project with a web page at
92 <http://www.arm.linux.org.uk/>.
93
Russell King74facff2011-06-02 11:16:22 +010094config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070095 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010096 bool
97
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020098config NEED_SG_DMA_LENGTH
99 bool
100
101config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200102 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100103 select ARM_HAS_SG_CHAIN
104 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200105
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900106if ARM_DMA_USE_IOMMU
107
108config ARM_DMA_IOMMU_ALIGNMENT
109 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
110 range 4 9
111 default 8
112 help
113 DMA mapping framework by default aligns all buffers to the smallest
114 PAGE_SIZE order which is greater than or equal to the requested buffer
115 size. This works well for buffers up to a few hundreds kilobytes, but
116 for larger buffers it just a waste of address space. Drivers which has
117 relatively small addressing window (like 64Mib) might run out of
118 virtual space with just a few allocations.
119
120 With this parameter you can specify the maximum PAGE_SIZE order for
121 DMA IOMMU buffers. Larger buffers will be aligned only to this
122 specified order. The order is expressed as a power of two multiplied
123 by the PAGE_SIZE.
124
125endif
126
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100127config MIGHT_HAVE_PCI
128 bool
129
Ralf Baechle75e71532007-02-09 17:08:58 +0000130config SYS_SUPPORTS_APM_EMULATION
131 bool
132
Linus Walleijbc581772009-09-15 17:30:37 +0100133config HAVE_TCM
134 bool
135 select GENERIC_ALLOCATOR
136
Russell Kinge119bff2010-01-10 17:23:29 +0000137config HAVE_PROC_CPU
138 bool
139
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700140config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000141 bool
Al Viro5ea81762007-02-11 15:41:31 +0000142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143config EISA
144 bool
145 ---help---
146 The Extended Industry Standard Architecture (EISA) bus was
147 developed as an open alternative to the IBM MicroChannel bus.
148
149 The EISA bus provided some of the features of the IBM MicroChannel
150 bus while maintaining backward compatibility with cards made for
151 the older ISA bus. The EISA bus saw limited use between 1988 and
152 1995 when it was made obsolete by the PCI bus.
153
154 Say Y here if you are building a kernel for an EISA-based machine.
155
156 Otherwise, say N.
157
158config SBUS
159 bool
160
Russell Kingf16fb1e2007-04-28 09:59:37 +0100161config STACKTRACE_SUPPORT
162 bool
163 default y
164
Nicolas Pitref76e9152008-04-24 01:31:46 -0400165config HAVE_LATENCYTOP_SUPPORT
166 bool
167 depends on !SMP
168 default y
169
Russell Kingf16fb1e2007-04-28 09:59:37 +0100170config LOCKDEP_SUPPORT
171 bool
172 default y
173
Russell King7ad1bcb2006-08-27 12:07:02 +0100174config TRACE_IRQFLAGS_SUPPORT
175 bool
Arnd Bergmanncb1293e2015-05-26 15:40:44 +0100176 default !CPU_V7M
Russell King7ad1bcb2006-08-27 12:07:02 +0100177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178config RWSEM_XCHGADD_ALGORITHM
179 bool
Will Deacon8a874112014-05-02 17:06:19 +0100180 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
David Howellsf0d1b0b2006-12-08 02:37:49 -0800182config ARCH_HAS_ILOG2_U32
183 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800184
185config ARCH_HAS_ILOG2_U64
186 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800187
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100188config ARCH_HAS_BANDGAP
189 bool
190
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800191config GENERIC_HWEIGHT
192 bool
193 default y
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195config GENERIC_CALIBRATE_DELAY
196 bool
197 default y
198
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100199config ARCH_MAY_HAVE_PC_FDC
200 bool
201
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800202config ZONE_DMA
203 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800204
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800205config NEED_DMA_MAP_STATE
206 def_bool y
207
David A. Longc7edc9e2014-03-07 11:23:04 -0500208config ARCH_SUPPORTS_UPROBES
209 def_bool y
210
Rob Herring58af4a22012-03-20 14:33:01 -0500211config ARCH_HAS_DMA_SET_COHERENT_MASK
212 bool
213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214config GENERIC_ISA_DMA
215 bool
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217config FIQ
218 bool
219
Rob Herring13a50452012-02-07 09:28:22 -0600220config NEED_RET_TO_USER
221 bool
222
Al Viro034d2f52005-12-19 16:27:59 -0500223config ARCH_MTD_XIP
224 bool
225
Hyok S. Choic760fc12006-03-27 15:18:50 +0100226config VECTORS_BASE
227 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900228 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100229 default DRAM_BASE if REMAP_VECTORS_TO_RAM
230 default 0x00000000
231 help
Russell King19accfd2013-07-04 11:40:32 +0100232 The base address of exception vectors. This must be two pages
233 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100234
Russell Kingdc21af92011-01-04 19:09:43 +0000235config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100236 bool "Patch physical to virtual translations at runtime" if EMBEDDED
237 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100238 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000239 depends on !ARCH_REALVIEW || !SPARSEMEM
240 help
Russell King111e9a52011-05-12 10:02:42 +0100241 Patch phys-to-virt and virt-to-phys translation functions at
242 boot and module load time according to the position of the
243 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000244
Russell King111e9a52011-05-12 10:02:42 +0100245 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100246 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000247
Russell Kingc1beced2011-08-10 10:23:45 +0100248 Only disable this option if you know that you do not require
249 this feature (eg, building a kernel for a single machine) and
250 you need to shrink the kernel to the minimal size.
251
Rob Herringc334bc12012-03-04 22:03:33 -0600252config NEED_MACH_IO_H
253 bool
254 help
255 Select this when mach/io.h is required to provide special
256 definitions for this platform. The need for mach/io.h should
257 be avoided when possible.
258
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400259config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400260 bool
Russell King111e9a52011-05-12 10:02:42 +0100261 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400262 Select this when mach/memory.h is required to provide special
263 definitions for this platform. The need for mach/memory.h should
264 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400265
266config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100267 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100268 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100269 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100270 default 0x00000000 if ARCH_EBSA110 || \
271 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
272 ARCH_FOOTBRIDGE || \
273 ARCH_INTEGRATOR || \
274 ARCH_IOP13XX || \
275 ARCH_KS8695 || \
276 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
277 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
278 default 0x20000000 if ARCH_S5PV210
279 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
280 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
281 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
282 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
283 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400284 help
285 Please provide the physical address corresponding to the
286 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000287
Simon Glass87e040b2011-08-16 23:44:26 +0100288config GENERIC_BUG
289 def_bool y
290 depends on BUG
291
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700292config PGTABLE_LEVELS
293 int
294 default 3 if ARM_LPAE
295 default 2
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297source "init/Kconfig"
298
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700299source "kernel/Kconfig.freezer"
300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301menu "System Type"
302
Hyok S. Choi3c427972009-07-24 12:35:00 +0100303config MMU
304 bool "MMU-based Paged Memory Management Support"
305 default y
306 help
307 Select if you want MMU-based virtualised addressing space
308 support by paged memory management. If unsure, say 'Y'.
309
Russell Kingccf50e22010-03-15 19:03:06 +0000310#
311# The "ARM system type" choice list is ordered alphabetically by option
312# text. Please add new entries in the option alphabetic order.
313#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314choice
315 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100316 default ARCH_VERSATILE if !MMU
317 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Rob Herring387798b2012-09-06 13:41:12 -0500319config ARCH_MULTIPLATFORM
320 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100321 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600322 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700323 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500324 select ARM_PATCH_PHYS_VIRT
325 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500326 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600327 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600328 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100329 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500330 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600331 select SPARSE_IRQ
332 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600333
Stefan Agner9c77bc42015-05-20 00:03:51 +0200334config ARM_SINGLE_ARMV7M
335 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
336 depends on !MMU
337 select ARCH_WANT_OPTIONAL_GPIOLIB
338 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200339 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200340 select CLKSRC_OF
341 select COMMON_CLK
342 select CPU_V7M
343 select GENERIC_CLOCKEVENTS
344 select NO_IOPORT_MAP
345 select SPARSE_IRQ
346 select USE_OF
347
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100348config ARCH_REALVIEW
349 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100350 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100351 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100352 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200353 select COMMON_CLK
354 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100355 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100356 select GPIO_PL061 if GPIOLIB
357 select ICST
358 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000359 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000360 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100361 help
362 This enables support for ARM Ltd RealView boards.
363
364config ARCH_VERSATILE
365 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100366 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100367 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100368 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100369 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100370 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100371 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900372 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000373 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000374 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100375 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000376 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100377 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100378 help
379 This enables support for ARM Ltd Versatile board.
380
Russell King93e22562012-10-12 14:20:52 +0100381config ARCH_CLPS711X
382 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400383 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400384 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400385 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100386 select COMMON_CLK
387 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400388 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400389 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400390 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100391 help
392 Support for Cirrus Logic 711x/721x/731x based boards.
393
Russell King788c9702009-04-26 14:21:59 +0100394config ARCH_GEMINI
395 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100396 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200397 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100398 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200399 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100400 help
401 Support for the Cortina Systems Gemini family SoCs
402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403config ARCH_EBSA110
404 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100405 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000406 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100407 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600408 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400409 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700410 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 help
412 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000413 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 Ethernet interface, two PCMCIA sockets, two serial ports and a
415 parallel port.
416
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000417config ARCH_EP93XX
418 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100419 select ARCH_HAS_HOLES_MEMORYMODEL
420 select ARCH_REQUIRE_GPIOLIB
421 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000422 select ARM_AMBA
423 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100424 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100425 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000426 help
427 This enables support for the Cirrus EP93xx series of CPUs.
428
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429config ARCH_FOOTBRIDGE
430 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000431 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000433 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200434 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600435 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400436 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000437 help
438 Support for systems based on the DC21285 companion chip
439 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100441config ARCH_NETX
442 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100443 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100444 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000445 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100446 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000447 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100448 This enables support for systems based on the Hilscher NetX Soc
449
Russell King3b938be2007-05-12 11:25:44 +0100450config ARCH_IOP13XX
451 bool "IOP13xx-based"
452 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100453 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400454 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600455 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100456 select PCI
457 select PLAT_IOP
458 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000459 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100460 help
461 Support for Intel's IOP13XX (XScale) family of processors.
462
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100463config ARCH_IOP32X
464 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100465 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100466 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000467 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200468 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600469 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100470 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100471 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000472 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100473 Support for Intel's 80219 and IOP32X (XScale) family of
474 processors.
475
476config ARCH_IOP33X
477 bool "IOP33x-based"
478 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100479 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000480 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200481 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600482 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100483 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100484 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100485 help
486 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487
Russell King3b938be2007-05-12 11:25:44 +0100488config ARCH_IXP4XX
489 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100490 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500491 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100492 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100493 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100494 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000495 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100496 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100497 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100498 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600499 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200500 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100501 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100502 help
Russell King3b938be2007-05-12 11:25:44 +0100503 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100504
Saeed Bisharaedabd382009-08-06 15:12:43 +0300505config ARCH_DOVE
506 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300507 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100508 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300509 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100510 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100511 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100512 select PINCTRL
513 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200514 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300515 help
516 Support for the Marvell Dove SoC 88AP510
517
Russell King788c9702009-04-26 14:21:59 +0100518config ARCH_MV78XX0
519 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700520 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100521 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100522 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100523 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100524 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200525 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100526 help
527 Support for the following Marvell MV78xx0 series SoCs:
528 MV781x0, MV782x0.
529
530config ARCH_ORION5X
531 bool "Marvell Orion"
532 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700533 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100534 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100535 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100536 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100537 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200538 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100539 help
540 Support for the following Marvell Orion 5x series SoCs:
541 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
542 Orion-2 (5281), Orion-1-90 (6183).
543
544config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500545 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100546 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100547 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100548 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100549 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100550 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800551 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800552 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800553 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800554 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100555 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400556 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100557 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500558 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100559
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100560config ARCH_KS8695
561 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100562 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200563 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100564 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200565 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100566 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100567 help
568 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
569 System-on-Chip devices.
570
Russell King788c9702009-04-26 14:21:59 +0100571config ARCH_W90X900
572 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100573 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100574 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100575 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100576 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100577 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200578 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100579 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
580 At present, the w90x900 has been renamed nuc900, regarding
581 the ARM series product line, you can login the following
582 link address to know more.
583
584 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
585 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400586
Russell King93e22562012-10-12 14:20:52 +0100587config ARCH_LPC32XX
588 bool "NXP LPC32XX"
589 select ARCH_REQUIRE_GPIOLIB
590 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000591 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100592 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100593 select CPU_ARM926T
594 select GENERIC_CLOCKEVENTS
595 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100596 select USE_OF
597 help
598 Support for the NXP LPC32XX family of processors
599
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700601 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100602 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100603 select ARCH_MTD_XIP
604 select ARCH_REQUIRE_GPIOLIB
605 select ARM_CPU_SUSPEND if PM
606 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100607 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100608 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100609 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200610 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100611 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800612 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100613 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100614 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100615 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800616 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800617 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000618 help
eric miao2c8086a2007-09-11 19:13:17 -0700619 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100621config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100622 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100623 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100624 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900625 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900626 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100627 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800628 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800629 select HAVE_ARM_TWD if SMP
Dave Martin3b556582011-12-07 15:38:04 +0000630 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000631 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000632 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700633 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200634 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100635 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900636 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100637 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000638 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100639 Support for Renesas ARM SoC platforms using a non-multiplatform
640 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
641 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000642
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643config ARCH_RPC
644 bool "RiscPC"
645 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100646 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100647 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000648 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100649 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100650 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200651 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100652 select HAVE_PATA_PLATFORM
653 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600654 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400655 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700656 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100657 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 help
659 On the Acorn Risc-PC, Linux can support the internal IDE disk and
660 CD-ROM interface, serial and parallel port, and the floppy drive.
661
662config ARCH_SA1100
663 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100664 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700665 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100666 select ARCH_SPARSEMEM_ENABLE
667 select CLKDEV_LOOKUP
668 select CLKSRC_MMIO
669 select CPU_FREQ
670 select CPU_SA1100
671 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200672 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100673 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100674 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100675 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400676 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100677 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000678 help
679 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900681config ARCH_S3C24XX
682 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900683 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100684 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100685 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200686 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800687 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900688 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900689 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900690 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100691 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900692 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600693 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900694 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900696 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
697 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
698 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
699 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900700
Ben Dooksa08ab632008-10-21 14:06:39 +0100701config ARCH_S3C64XX
702 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900703 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200704 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100705 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100706 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100707 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200708 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900709 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900710 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800711 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900712 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900713 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900714 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100715 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700716 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100717 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100718 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100719 select S3C_DEV_NAND
720 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900721 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900722 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900723 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100724 help
725 Samsung S3C64XX series based systems
726
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100727config ARCH_DAVINCI
728 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100729 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700730 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100731 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700732 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100733 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100734 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100735 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500736 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530737 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100738 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100739 help
740 Support for TI's DaVinci platform.
741
Tony Lindgrena0694862013-01-11 11:24:20 -0800742config ARCH_OMAP1
743 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600744 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100745 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800746 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100747 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200748 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100749 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100750 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800751 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800752 select HAVE_IDE
753 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700754 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800755 select NEED_MACH_IO_H if PCCARD
756 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700757 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100758 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800759 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800760
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761endchoice
762
Rob Herring387798b2012-09-06 13:41:12 -0500763menu "Multiple platform selection"
764 depends on ARCH_MULTIPLATFORM
765
766comment "CPU Core family selection"
767
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100768config ARCH_MULTI_V4
769 bool "ARMv4 based platforms (FA526)"
770 depends on !ARCH_MULTI_V6_V7
771 select ARCH_MULTI_V4_V5
772 select CPU_FA526
773
Rob Herring387798b2012-09-06 13:41:12 -0500774config ARCH_MULTI_V4T
775 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500776 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100777 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200778 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
779 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
780 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500781
782config ARCH_MULTI_V5
783 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500784 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100785 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100786 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200787 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
788 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500789
790config ARCH_MULTI_V4_V5
791 bool
792
793config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800794 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500795 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600796 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500797
798config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800799 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500800 default y
801 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100802 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600803 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500804
805config ARCH_MULTI_V6_V7
806 bool
Rob Herring9352b052014-01-31 15:36:10 -0600807 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500808
809config ARCH_MULTI_CPU_AUTO
810 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
811 select ARCH_MULTI_V5
812
813endmenu
814
Rob Herring05e2a3d2013-12-05 10:04:54 -0600815config ARCH_VIRT
816 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600817 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600818 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600819 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600820 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600821
Russell Kingccf50e22010-03-15 19:03:06 +0000822#
823# This is sorted alphabetically by mach-* pathname. However, plat-*
824# Kconfigs may be included either alphabetically (according to the
825# plat- suffix) or along side the corresponding mach-* source.
826#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200827source "arch/arm/mach-mvebu/Kconfig"
828
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200829source "arch/arm/mach-alpine/Kconfig"
830
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100831source "arch/arm/mach-asm9260/Kconfig"
832
Russell King95b8f202010-01-14 11:43:54 +0000833source "arch/arm/mach-at91/Kconfig"
834
Anders Berg1d22924e2014-05-23 11:08:35 +0200835source "arch/arm/mach-axxia/Kconfig"
836
Christian Daudt8ac49e02012-11-19 09:46:10 -0800837source "arch/arm/mach-bcm/Kconfig"
838
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200839source "arch/arm/mach-berlin/Kconfig"
840
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841source "arch/arm/mach-clps711x/Kconfig"
842
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300843source "arch/arm/mach-cns3xxx/Kconfig"
844
Russell King95b8f202010-01-14 11:43:54 +0000845source "arch/arm/mach-davinci/Kconfig"
846
Baruch Siachdf8d7422015-01-14 10:40:30 +0200847source "arch/arm/mach-digicolor/Kconfig"
848
Russell King95b8f202010-01-14 11:43:54 +0000849source "arch/arm/mach-dove/Kconfig"
850
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000851source "arch/arm/mach-ep93xx/Kconfig"
852
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853source "arch/arm/mach-footbridge/Kconfig"
854
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200855source "arch/arm/mach-gemini/Kconfig"
856
Rob Herring387798b2012-09-06 13:41:12 -0500857source "arch/arm/mach-highbank/Kconfig"
858
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800859source "arch/arm/mach-hisi/Kconfig"
860
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861source "arch/arm/mach-integrator/Kconfig"
862
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100863source "arch/arm/mach-iop32x/Kconfig"
864
865source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866
Dan Williams285f5fa2006-12-07 02:59:39 +0100867source "arch/arm/mach-iop13xx/Kconfig"
868
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869source "arch/arm/mach-ixp4xx/Kconfig"
870
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400871source "arch/arm/mach-keystone/Kconfig"
872
Russell King95b8f202010-01-14 11:43:54 +0000873source "arch/arm/mach-ks8695/Kconfig"
874
Carlo Caione3b8f5032014-09-10 22:16:59 +0200875source "arch/arm/mach-meson/Kconfig"
876
Jonas Jensen17723fd32013-12-18 13:58:45 +0100877source "arch/arm/mach-moxart/Kconfig"
878
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200879source "arch/arm/mach-mv78xx0/Kconfig"
880
Shawn Guo3995eb82012-09-13 19:48:07 +0800881source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882
Matthias Bruggerf682a212014-05-13 01:06:13 +0200883source "arch/arm/mach-mediatek/Kconfig"
884
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800885source "arch/arm/mach-mxs/Kconfig"
886
Russell King95b8f202010-01-14 11:43:54 +0000887source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800888
Russell King95b8f202010-01-14 11:43:54 +0000889source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000890
Daniel Tang9851ca52013-06-11 18:40:17 +1000891source "arch/arm/mach-nspire/Kconfig"
892
Tony Lindgrend48af152005-07-10 19:58:17 +0100893source "arch/arm/plat-omap/Kconfig"
894
895source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896
Tony Lindgren1dbae812005-11-10 14:26:51 +0000897source "arch/arm/mach-omap2/Kconfig"
898
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400899source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400900
Rob Herring387798b2012-09-06 13:41:12 -0500901source "arch/arm/mach-picoxcell/Kconfig"
902
Russell King95b8f202010-01-14 11:43:54 +0000903source "arch/arm/mach-pxa/Kconfig"
904source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905
Russell King95b8f202010-01-14 11:43:54 +0000906source "arch/arm/mach-mmp/Kconfig"
907
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600908source "arch/arm/mach-qcom/Kconfig"
909
Russell King95b8f202010-01-14 11:43:54 +0000910source "arch/arm/mach-realview/Kconfig"
911
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200912source "arch/arm/mach-rockchip/Kconfig"
913
Russell King95b8f202010-01-14 11:43:54 +0000914source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300915
Rob Herring387798b2012-09-06 13:41:12 -0500916source "arch/arm/mach-socfpga/Kconfig"
917
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100918source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100919
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100920source "arch/arm/mach-sti/Kconfig"
921
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900922source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923
Ben Dooks431107e2010-01-26 10:11:04 +0900924source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100925
Kukjin Kim170f4e42010-02-24 16:40:44 +0900926source "arch/arm/mach-s5pv210/Kconfig"
927
Kukjin Kim83014572011-11-06 13:54:56 +0900928source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500929source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900930
Russell King882d01f2010-03-02 23:40:15 +0000931source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932
Maxime Ripard3b526342012-11-08 12:40:16 +0100933source "arch/arm/mach-sunxi/Kconfig"
934
Barry Song156a0992012-08-23 13:41:58 +0800935source "arch/arm/mach-prima2/Kconfig"
936
Erik Gillingc5f80062010-01-21 16:53:02 -0800937source "arch/arm/mach-tegra/Kconfig"
938
Russell King95b8f202010-01-14 11:43:54 +0000939source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900941source "arch/arm/mach-uniphier/Kconfig"
942
Russell King95b8f202010-01-14 11:43:54 +0000943source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944
945source "arch/arm/mach-versatile/Kconfig"
946
Russell Kingceade892010-02-11 21:44:53 +0000947source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000948source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000949
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300950source "arch/arm/mach-vt8500/Kconfig"
951
wanzongshun7ec80dd2008-12-03 03:55:38 +0100952source "arch/arm/mach-w90x900/Kconfig"
953
Jun Nieacede512015-04-28 17:18:05 +0800954source "arch/arm/mach-zx/Kconfig"
955
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600956source "arch/arm/mach-zynq/Kconfig"
957
Stefan Agner499f1642015-05-21 00:35:44 +0200958# ARMv7-M architecture
959config ARCH_EFM32
960 bool "Energy Micro efm32"
961 depends on ARM_SINGLE_ARMV7M
962 select ARCH_REQUIRE_GPIOLIB
963 help
964 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
965 processors.
966
967config ARCH_LPC18XX
968 bool "NXP LPC18xx/LPC43xx"
969 depends on ARM_SINGLE_ARMV7M
970 select ARCH_HAS_RESET_CONTROLLER
971 select ARM_AMBA
972 select CLKSRC_LPC32XX
973 select PINCTRL
974 help
975 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
976 high performance microcontrollers.
977
978config ARCH_STM32
979 bool "STMicrolectronics STM32"
980 depends on ARM_SINGLE_ARMV7M
981 select ARCH_HAS_RESET_CONTROLLER
982 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200983 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200984 select RESET_CONTROLLER
985 help
986 Support for STMicroelectronics STM32 processors.
987
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988# Definitions to make life easier
989config ARCH_ACORN
990 bool
991
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100992config PLAT_IOP
993 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700994 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100995
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400996config PLAT_ORION
997 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100998 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100999 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001000 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +02001001 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001002
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001003config PLAT_ORION_LEGACY
1004 bool
1005 select PLAT_ORION
1006
Eric Miaobd5ce432009-01-20 12:06:01 +08001007config PLAT_PXA
1008 bool
1009
Russell Kingf4b8b312010-01-14 12:48:06 +00001010config PLAT_VERSATILE
1011 bool
1012
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001013source "arch/arm/firmware/Kconfig"
1014
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015source arch/arm/mm/Kconfig
1016
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001017config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001018 bool "Enable iWMMXt support"
1019 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1020 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001021 help
1022 Enable support for iWMMXt context switching at run time if
1023 running on a CPU that supports it.
1024
eric miao52108642010-12-13 09:42:34 +01001025config MULTI_IRQ_HANDLER
1026 bool
1027 help
1028 Allow each machine to specify it's own IRQ handler at run time.
1029
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001030if !MMU
1031source "arch/arm/Kconfig-nommu"
1032endif
1033
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001034config PJ4B_ERRATA_4742
1035 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1036 depends on CPU_PJ4B && MACH_ARMADA_370
1037 default y
1038 help
1039 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1040 Event (WFE) IDLE states, a specific timing sensitivity exists between
1041 the retiring WFI/WFE instructions and the newly issued subsequent
1042 instructions. This sensitivity can result in a CPU hang scenario.
1043 Workaround:
1044 The software must insert either a Data Synchronization Barrier (DSB)
1045 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1046 instruction
1047
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001048config ARM_ERRATA_326103
1049 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1050 depends on CPU_V6
1051 help
1052 Executing a SWP instruction to read-only memory does not set bit 11
1053 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1054 treat the access as a read, preventing a COW from occurring and
1055 causing the faulting task to livelock.
1056
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001057config ARM_ERRATA_411920
1058 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001059 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001060 help
1061 Invalidation of the Instruction Cache operation can
1062 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1063 It does not affect the MPCore. This option enables the ARM Ltd.
1064 recommended workaround.
1065
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001066config ARM_ERRATA_430973
1067 bool "ARM errata: Stale prediction on replaced interworking branch"
1068 depends on CPU_V7
1069 help
1070 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001071 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001072 interworking branch is replaced with another code sequence at the
1073 same virtual address, whether due to self-modifying code or virtual
1074 to physical address re-mapping, Cortex-A8 does not recover from the
1075 stale interworking branch prediction. This results in Cortex-A8
1076 executing the new code sequence in the incorrect ARM or Thumb state.
1077 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1078 and also flushes the branch target cache at every context switch.
1079 Note that setting specific bits in the ACTLR register may not be
1080 available in non-secure mode.
1081
Catalin Marinas855c5512009-04-30 17:06:15 +01001082config ARM_ERRATA_458693
1083 bool "ARM errata: Processor deadlock when a false hazard is created"
1084 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001085 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001086 help
1087 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1088 erratum. For very specific sequences of memory operations, it is
1089 possible for a hazard condition intended for a cache line to instead
1090 be incorrectly associated with a different cache line. This false
1091 hazard might then cause a processor deadlock. The workaround enables
1092 the L1 caching of the NEON accesses and disables the PLD instruction
1093 in the ACTLR register. Note that setting specific bits in the ACTLR
1094 register may not be available in non-secure mode.
1095
Catalin Marinas0516e462009-04-30 17:06:20 +01001096config ARM_ERRATA_460075
1097 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1098 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001099 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001100 help
1101 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1102 erratum. Any asynchronous access to the L2 cache may encounter a
1103 situation in which recent store transactions to the L2 cache are lost
1104 and overwritten with stale memory contents from external memory. The
1105 workaround disables the write-allocate mode for the L2 cache via the
1106 ACTLR register. Note that setting specific bits in the ACTLR register
1107 may not be available in non-secure mode.
1108
Will Deacon9f050272010-09-14 09:51:43 +01001109config ARM_ERRATA_742230
1110 bool "ARM errata: DMB operation may be faulty"
1111 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001112 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001113 help
1114 This option enables the workaround for the 742230 Cortex-A9
1115 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1116 between two write operations may not ensure the correct visibility
1117 ordering of the two writes. This workaround sets a specific bit in
1118 the diagnostic register of the Cortex-A9 which causes the DMB
1119 instruction to behave as a DSB, ensuring the correct behaviour of
1120 the two writes.
1121
Will Deacona672e992010-09-14 09:53:02 +01001122config ARM_ERRATA_742231
1123 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1124 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001125 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001126 help
1127 This option enables the workaround for the 742231 Cortex-A9
1128 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1129 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1130 accessing some data located in the same cache line, may get corrupted
1131 data due to bad handling of the address hazard when the line gets
1132 replaced from one of the CPUs at the same time as another CPU is
1133 accessing it. This workaround sets specific bits in the diagnostic
1134 register of the Cortex-A9 which reduces the linefill issuing
1135 capabilities of the processor.
1136
Jon Medhurst69155792013-06-07 10:35:35 +01001137config ARM_ERRATA_643719
1138 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1139 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001140 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001141 help
1142 This option enables the workaround for the 643719 Cortex-A9 (prior to
1143 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1144 register returns zero when it should return one. The workaround
1145 corrects this value, ensuring cache maintenance operations which use
1146 it behave as intended and avoiding data corruption.
1147
Will Deaconcdf357f2010-08-05 11:20:51 +01001148config ARM_ERRATA_720789
1149 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001150 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001151 help
1152 This option enables the workaround for the 720789 Cortex-A9 (prior to
1153 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1154 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1155 As a consequence of this erratum, some TLB entries which should be
1156 invalidated are not, resulting in an incoherency in the system page
1157 tables. The workaround changes the TLB flushing routines to invalidate
1158 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001159
1160config ARM_ERRATA_743622
1161 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1162 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001163 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001164 help
1165 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001166 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001167 optimisation in the Cortex-A9 Store Buffer may lead to data
1168 corruption. This workaround sets a specific bit in the diagnostic
1169 register of the Cortex-A9 which disables the Store Buffer
1170 optimisation, preventing the defect from occurring. This has no
1171 visible impact on the overall performance or power consumption of the
1172 processor.
1173
Will Deacon9a27c272011-02-18 16:36:35 +01001174config ARM_ERRATA_751472
1175 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001176 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001177 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001178 help
1179 This option enables the workaround for the 751472 Cortex-A9 (prior
1180 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1181 completion of a following broadcasted operation if the second
1182 operation is received by a CPU before the ICIALLUIS has completed,
1183 potentially leading to corrupted entries in the cache or TLB.
1184
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001185config ARM_ERRATA_754322
1186 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1187 depends on CPU_V7
1188 help
1189 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1190 r3p*) erratum. A speculative memory access may cause a page table walk
1191 which starts prior to an ASID switch but completes afterwards. This
1192 can populate the micro-TLB with a stale entry which may be hit with
1193 the new ASID. This workaround places two dsb instructions in the mm
1194 switching code so that no page table walks can cross the ASID switch.
1195
Will Deacon5dab26af2011-03-04 12:38:54 +01001196config ARM_ERRATA_754327
1197 bool "ARM errata: no automatic Store Buffer drain"
1198 depends on CPU_V7 && SMP
1199 help
1200 This option enables the workaround for the 754327 Cortex-A9 (prior to
1201 r2p0) erratum. The Store Buffer does not have any automatic draining
1202 mechanism and therefore a livelock may occur if an external agent
1203 continuously polls a memory location waiting to observe an update.
1204 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1205 written polling loops from denying visibility of updates to memory.
1206
Catalin Marinas145e10e2011-08-15 11:04:41 +01001207config ARM_ERRATA_364296
1208 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001209 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001210 help
1211 This options enables the workaround for the 364296 ARM1136
1212 r0p2 erratum (possible cache data corruption with
1213 hit-under-miss enabled). It sets the undocumented bit 31 in
1214 the auxiliary control register and the FI bit in the control
1215 register, thus disabling hit-under-miss without putting the
1216 processor into full low interrupt latency mode. ARM11MPCore
1217 is not affected.
1218
Will Deaconf630c1b2011-09-15 11:45:15 +01001219config ARM_ERRATA_764369
1220 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1221 depends on CPU_V7 && SMP
1222 help
1223 This option enables the workaround for erratum 764369
1224 affecting Cortex-A9 MPCore with two or more processors (all
1225 current revisions). Under certain timing circumstances, a data
1226 cache line maintenance operation by MVA targeting an Inner
1227 Shareable memory region may fail to proceed up to either the
1228 Point of Coherency or to the Point of Unification of the
1229 system. This workaround adds a DSB instruction before the
1230 relevant cache maintenance functions and sets a specific bit
1231 in the diagnostic control register of the SCU.
1232
Simon Horman7253b852012-09-28 02:12:45 +01001233config ARM_ERRATA_775420
1234 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1235 depends on CPU_V7
1236 help
1237 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1238 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1239 operation aborts with MMU exception, it might cause the processor
1240 to deadlock. This workaround puts DSB before executing ISB if
1241 an abort may occur on cache maintenance.
1242
Catalin Marinas93dc6882013-03-26 23:35:04 +01001243config ARM_ERRATA_798181
1244 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1245 depends on CPU_V7 && SMP
1246 help
1247 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1248 adequately shooting down all use of the old entries. This
1249 option enables the Linux kernel workaround for this erratum
1250 which sends an IPI to the CPUs that are running the same ASID
1251 as the one being invalidated.
1252
Will Deacon84b65042013-08-20 17:29:55 +01001253config ARM_ERRATA_773022
1254 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1255 depends on CPU_V7
1256 help
1257 This option enables the workaround for the 773022 Cortex-A15
1258 (up to r0p4) erratum. In certain rare sequences of code, the
1259 loop buffer may deliver incorrect instructions. This
1260 workaround disables the loop buffer to avoid the erratum.
1261
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262endmenu
1263
1264source "arch/arm/common/Kconfig"
1265
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266menu "Bus support"
1267
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268config ISA
1269 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270 help
1271 Find out whether you have ISA slots on your motherboard. ISA is the
1272 name of a bus system, i.e. the way the CPU talks to the other stuff
1273 inside your box. Other bus systems are PCI, EISA, MicroChannel
1274 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1275 newer boards don't support it. If you have ISA, say Y, otherwise N.
1276
Russell King065909b2006-01-04 15:44:16 +00001277# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278config ISA_DMA
1279 bool
Russell King065909b2006-01-04 15:44:16 +00001280 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281
Russell King065909b2006-01-04 15:44:16 +00001282# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001283config ISA_DMA_API
1284 bool
Al Viro5cae8412005-05-04 05:39:22 +01001285
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001287 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288 help
1289 Find out whether you have a PCI motherboard. PCI is the name of a
1290 bus system, i.e. the way the CPU talks to the other stuff inside
1291 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1292 VESA. If you have PCI, say Y, otherwise N.
1293
Anton Vorontsov52882172010-04-19 13:20:49 +01001294config PCI_DOMAINS
1295 bool
1296 depends on PCI
1297
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001298config PCI_DOMAINS_GENERIC
1299 def_bool PCI_DOMAINS
1300
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001301config PCI_NANOENGINE
1302 bool "BSE nanoEngine PCI support"
1303 depends on SA1100_NANOENGINE
1304 help
1305 Enable PCI on the BSE nanoEngine board.
1306
Matthew Wilcox36e23592007-07-10 10:54:40 -06001307config PCI_SYSCALL
1308 def_bool PCI
1309
Mike Rapoporta0113a92007-11-25 08:55:34 +01001310config PCI_HOST_ITE8152
1311 bool
1312 depends on PCI && MACH_ARMCORE
1313 default y
1314 select DMABOUNCE
1315
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001317source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318
1319source "drivers/pcmcia/Kconfig"
1320
1321endmenu
1322
1323menu "Kernel Features"
1324
Dave Martin3b556582011-12-07 15:38:04 +00001325config HAVE_SMP
1326 bool
1327 help
1328 This option should be selected by machines which have an SMP-
1329 capable CPU.
1330
1331 The only effect of this option is to make the SMP-related
1332 options available to the user for configuration.
1333
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001335 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001336 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001337 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001338 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001339 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001340 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341 help
1342 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001343 a system with only one CPU, say N. If you have a system with more
1344 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001345
Robert Graffham4a474152014-01-23 15:55:29 -08001346 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001348 you say Y here, the kernel will run on many, but not all,
1349 uniprocessor machines. On a uniprocessor machine, the kernel
1350 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001351
Paul Bolle395cf962011-08-15 02:02:26 +02001352 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001354 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355
1356 If you don't know what to do here, say N.
1357
Russell Kingf00ec482010-09-04 10:47:48 +01001358config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001359 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001360 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001361 default y
1362 help
1363 SMP kernels contain instructions which fail on non-SMP processors.
1364 Enabling this option allows the kernel to modify itself to make
1365 these instructions safe. Disabling it allows about 1K of space
1366 savings.
1367
1368 If you don't know what to do here, say Y.
1369
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001370config ARM_CPU_TOPOLOGY
1371 bool "Support cpu topology definition"
1372 depends on SMP && CPU_V7
1373 default y
1374 help
1375 Support ARM cpu topology definition. The MPIDR register defines
1376 affinity between processors which is then used to describe the cpu
1377 topology of an ARM System.
1378
1379config SCHED_MC
1380 bool "Multi-core scheduler support"
1381 depends on ARM_CPU_TOPOLOGY
1382 help
1383 Multi-core scheduler support improves the CPU scheduler's decision
1384 making when dealing with multi-core CPU chips at a cost of slightly
1385 increased overhead in some places. If unsure say N here.
1386
1387config SCHED_SMT
1388 bool "SMT scheduler support"
1389 depends on ARM_CPU_TOPOLOGY
1390 help
1391 Improves the CPU scheduler's decision making when dealing with
1392 MultiThreading at a cost of slightly increased overhead in some
1393 places. If unsure say N here.
1394
Russell Kinga8cbcd92009-05-16 11:51:14 +01001395config HAVE_ARM_SCU
1396 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001397 help
1398 This option enables support for the ARM system coherency unit
1399
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001400config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001401 bool "Architected timer support"
1402 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001403 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001404 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001405 help
1406 This option enables support for the ARM architected timer
1407
Russell Kingf32f4ce2009-05-16 12:14:21 +01001408config HAVE_ARM_TWD
1409 bool
1410 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001411 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001412 help
1413 This options enables support for the ARM timer and watchdog unit
1414
Nicolas Pitree8db2882012-04-12 02:45:22 -04001415config MCPM
1416 bool "Multi-Cluster Power Management"
1417 depends on CPU_V7 && SMP
1418 help
1419 This option provides the common power management infrastructure
1420 for (multi-)cluster based systems, such as big.LITTLE based
1421 systems.
1422
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001423config MCPM_QUAD_CLUSTER
1424 bool
1425 depends on MCPM
1426 help
1427 To avoid wasting resources unnecessarily, MCPM only supports up
1428 to 2 clusters by default.
1429 Platforms with 3 or 4 clusters that use MCPM must select this
1430 option to allow the additional clusters to be managed.
1431
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001432config BIG_LITTLE
1433 bool "big.LITTLE support (Experimental)"
1434 depends on CPU_V7 && SMP
1435 select MCPM
1436 help
1437 This option enables support selections for the big.LITTLE
1438 system architecture.
1439
1440config BL_SWITCHER
1441 bool "big.LITTLE switcher support"
1442 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001443 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001444 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001445 help
1446 The big.LITTLE "switcher" provides the core functionality to
1447 transparently handle transition between a cluster of A15's
1448 and a cluster of A7's in a big.LITTLE system.
1449
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001450config BL_SWITCHER_DUMMY_IF
1451 tristate "Simple big.LITTLE switcher user interface"
1452 depends on BL_SWITCHER && DEBUG_KERNEL
1453 help
1454 This is a simple and dummy char dev interface to control
1455 the big.LITTLE switcher core code. It is meant for
1456 debugging purposes only.
1457
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001458choice
1459 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001460 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001461 default VMSPLIT_3G
1462 help
1463 Select the desired split between kernel and user memory.
1464
1465 If you are not absolutely sure what you are doing, leave this
1466 option alone!
1467
1468 config VMSPLIT_3G
1469 bool "3G/1G user/kernel split"
1470 config VMSPLIT_2G
1471 bool "2G/2G user/kernel split"
1472 config VMSPLIT_1G
1473 bool "1G/3G user/kernel split"
1474endchoice
1475
1476config PAGE_OFFSET
1477 hex
Russell King006fa252014-02-26 19:40:46 +00001478 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001479 default 0x40000000 if VMSPLIT_1G
1480 default 0x80000000 if VMSPLIT_2G
1481 default 0xC0000000
1482
Linus Torvalds1da177e2005-04-16 15:20:36 -07001483config NR_CPUS
1484 int "Maximum number of CPUs (2-32)"
1485 range 2 32
1486 depends on SMP
1487 default "4"
1488
Russell Kinga054a812005-11-02 22:24:33 +00001489config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001490 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001491 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001492 help
1493 Say Y here to experiment with turning CPUs off and on. CPUs
1494 can be controlled through /sys/devices/system/cpu.
1495
Will Deacon2bdd4242012-12-12 19:20:52 +00001496config ARM_PSCI
1497 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1498 depends on CPU_V7
1499 help
1500 Say Y here if you want Linux to communicate with system firmware
1501 implementing the PSCI specification for CPU-centric power
1502 management operations described in ARM document number ARM DEN
1503 0022A ("Power State Coordination Interface System Software on
1504 ARM processors").
1505
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001506# The GPIO number here must be sorted by descending number. In case of
1507# a multiplatform kernel, we just want the highest value required by the
1508# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001509config ARCH_NR_GPIO
1510 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001511 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1512 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001513 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1514 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001515 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001516 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001517 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001518 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001519 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001520 default 0
1521 help
1522 Maximum number of GPIOs in the system.
1523
1524 If unsure, leave the default value.
1525
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001526source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527
Russell Kingc9218b12013-04-27 23:31:10 +01001528config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001529 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001530 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001531 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001532 default 128 if SOC_AT91RM9200
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001533 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001534 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001535
1536choice
Russell King47d84682013-09-10 23:47:55 +01001537 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001538 prompt "Timer frequency"
1539
1540config HZ_100
1541 bool "100 Hz"
1542
1543config HZ_200
1544 bool "200 Hz"
1545
1546config HZ_250
1547 bool "250 Hz"
1548
1549config HZ_300
1550 bool "300 Hz"
1551
1552config HZ_500
1553 bool "500 Hz"
1554
1555config HZ_1000
1556 bool "1000 Hz"
1557
1558endchoice
1559
1560config HZ
1561 int
Russell King47d84682013-09-10 23:47:55 +01001562 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001563 default 100 if HZ_100
1564 default 200 if HZ_200
1565 default 250 if HZ_250
1566 default 300 if HZ_300
1567 default 500 if HZ_500
1568 default 1000
1569
1570config SCHED_HRTICK
1571 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001572
Catalin Marinas16c79652009-07-24 12:33:02 +01001573config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001574 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001575 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001576 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001577 select AEABI
1578 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001579 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001580 help
1581 By enabling this option, the kernel will be compiled in
1582 Thumb-2 mode. A compiler/assembler that understand the unified
1583 ARM-Thumb syntax is needed.
1584
1585 If unsure, say N.
1586
Dave Martin6f685c52011-03-03 11:41:12 +01001587config THUMB2_AVOID_R_ARM_THM_JUMP11
1588 bool "Work around buggy Thumb-2 short branch relocations in gas"
1589 depends on THUMB2_KERNEL && MODULES
1590 default y
1591 help
1592 Various binutils versions can resolve Thumb-2 branches to
1593 locally-defined, preemptible global symbols as short-range "b.n"
1594 branch instructions.
1595
1596 This is a problem, because there's no guarantee the final
1597 destination of the symbol, or any candidate locations for a
1598 trampoline, are within range of the branch. For this reason, the
1599 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1600 relocation in modules at all, and it makes little sense to add
1601 support.
1602
1603 The symptom is that the kernel fails with an "unsupported
1604 relocation" error when loading some modules.
1605
1606 Until fixed tools are available, passing
1607 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1608 code which hits this problem, at the cost of a bit of extra runtime
1609 stack usage in some cases.
1610
1611 The problem is described in more detail at:
1612 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1613
1614 Only Thumb-2 kernels are affected.
1615
1616 Unless you are sure your tools don't have this problem, say Y.
1617
Catalin Marinas0becb082009-07-24 12:32:53 +01001618config ARM_ASM_UNIFIED
1619 bool
1620
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001621config AEABI
1622 bool "Use the ARM EABI to compile the kernel"
1623 help
1624 This option allows for the kernel to be compiled using the latest
1625 ARM ABI (aka EABI). This is only useful if you are using a user
1626 space environment that is also compiled with EABI.
1627
1628 Since there are major incompatibilities between the legacy ABI and
1629 EABI, especially with regard to structure member alignment, this
1630 option also changes the kernel syscall calling convention to
1631 disambiguate both ABIs and allow for backward compatibility support
1632 (selected with CONFIG_OABI_COMPAT).
1633
1634 To use this you need GCC version 4.0.0 or later.
1635
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001636config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001637 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001638 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001639 help
1640 This option preserves the old syscall interface along with the
1641 new (ARM EABI) one. It also provides a compatibility layer to
1642 intercept syscalls that have structure arguments which layout
1643 in memory differs between the legacy ABI and the new ARM EABI
1644 (only for non "thumb" binaries). This option adds a tiny
1645 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001646
1647 The seccomp filter system will not be available when this is
1648 selected, since there is no way yet to sensibly distinguish
1649 between calling conventions during filtering.
1650
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001651 If you know you'll be using only pure EABI user space then you
1652 can say N here. If this option is not selected and you attempt
1653 to execute a legacy ABI binary then the result will be
1654 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001655 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001656
Mel Gormaneb335752009-05-13 17:34:48 +01001657config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001658 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001659
Russell King05944d72006-11-30 20:43:51 +00001660config ARCH_SPARSEMEM_ENABLE
1661 bool
1662
Russell King07a2f732008-10-01 21:39:58 +01001663config ARCH_SPARSEMEM_DEFAULT
1664 def_bool ARCH_SPARSEMEM_ENABLE
1665
Russell King05944d72006-11-30 20:43:51 +00001666config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001667 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001668
Will Deacon7b7bf492011-05-19 13:21:14 +01001669config HAVE_ARCH_PFN_VALID
1670 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1671
Steve Capperb8cd51a2014-10-09 15:29:20 -07001672config HAVE_GENERIC_RCU_GUP
1673 def_bool y
1674 depends on ARM_LPAE
1675
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001676config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001677 bool "High Memory Support"
1678 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001679 help
1680 The address space of ARM processors is only 4 Gigabytes large
1681 and it has to accommodate user address space, kernel address
1682 space as well as some memory mapped IO. That means that, if you
1683 have a large amount of physical memory and/or IO, not all of the
1684 memory can be "permanently mapped" by the kernel. The physical
1685 memory that is not permanently mapped is called "high memory".
1686
1687 Depending on the selected kernel/user memory split, minimum
1688 vmalloc space and actual amount of RAM, you may not need this
1689 option which should result in a slightly faster kernel.
1690
1691 If unsure, say n.
1692
Russell King65cec8e2009-08-17 20:02:06 +01001693config HIGHPTE
1694 bool "Allocate 2nd-level pagetables from highmem"
1695 depends on HIGHMEM
Russell Kingb4d103d2015-06-25 10:49:45 +01001696 help
1697 The VM uses one page of physical memory for each page table.
1698 For systems with a lot of processes, this can use a lot of
1699 precious low memory, eventually leading to low memory being
1700 consumed by page tables. Setting this option will allow
1701 user-space 2nd level page tables to reside in high memory.
Russell King65cec8e2009-08-17 20:02:06 +01001702
Jamie Iles1b8873a2010-02-02 20:25:44 +01001703config HW_PERF_EVENTS
1704 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001705 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001706 default y
1707 help
1708 Enable hardware performance counter support for perf events. If
1709 disabled, perf events will use software events only.
1710
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001711config SYS_SUPPORTS_HUGETLBFS
1712 def_bool y
1713 depends on ARM_LPAE
1714
Catalin Marinas8d962502012-07-25 14:39:26 +01001715config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1716 def_bool y
1717 depends on ARM_LPAE
1718
Steven Capper4bfab202013-07-26 14:58:22 +01001719config ARCH_WANT_GENERAL_HUGETLB
1720 def_bool y
1721
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001722config ARM_MODULE_PLTS
1723 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1724 depends on MODULES
1725 help
1726 Allocate PLTs when loading modules so that jumps and calls whose
1727 targets are too far away for their relative offsets to be encoded
1728 in the instructions themselves can be bounced via veneers in the
1729 module's PLT. This allows modules to be allocated in the generic
1730 vmalloc area after the dedicated module memory area has been
1731 exhausted. The modules will use slightly more memory, but after
1732 rounding up to page size, the actual memory footprint is usually
1733 the same.
1734
1735 Say y if you are getting out of memory errors while loading modules
1736
Dave Hansen3f22ab22005-06-23 00:07:43 -07001737source "mm/Kconfig"
1738
Magnus Dammc1b2d972010-07-05 10:00:11 +01001739config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001740 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1741 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001742 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001743 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001744 default "11"
1745 help
1746 The kernel memory allocator divides physically contiguous memory
1747 blocks into "zones", where each zone is a power of two number of
1748 pages. This option selects the largest power of two that the kernel
1749 keeps in the memory allocator. If you need to allocate very large
1750 blocks of physically contiguous memory, then you may need to
1751 increase this value.
1752
1753 This config option is actually maximum order plus one. For example,
1754 a value of 11 means that the largest free memory block is 2^10 pages.
1755
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756config ALIGNMENT_TRAP
1757 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001758 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001760 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001761 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001762 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001763 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1764 address divisible by 4. On 32-bit ARM processors, these non-aligned
1765 fetch/store instructions will be emulated in software if you say
1766 here, which has a severe performance impact. This is necessary for
1767 correct operation of some network protocols. With an IP-only
1768 configuration it is safe to say N, otherwise say Y.
1769
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001770config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001771 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1772 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001773 default y if CPU_FEROCEON
1774 help
1775 Implement faster copy_to_user and clear_user methods for CPU
1776 cores where a 8-word STM instruction give significantly higher
1777 memory write throughput than a sequence of individual 32bit stores.
1778
1779 A possible side effect is a slight increase in scheduling latency
1780 between threads sharing the same address space if they invoke
1781 such copy operations with large buffers.
1782
1783 However, if the CPU data cache is using a write-allocate mode,
1784 this option is unlikely to provide any performance gain.
1785
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001786config SECCOMP
1787 bool
1788 prompt "Enable seccomp to safely compute untrusted bytecode"
1789 ---help---
1790 This kernel feature is useful for number crunching applications
1791 that may need to compute untrusted bytecode during their
1792 execution. By using pipes or other transports made available to
1793 the process as file descriptors supporting the read/write
1794 syscalls, it's possible to isolate those applications in
1795 their own address space using seccomp. Once seccomp is
1796 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1797 and the task is only allowed to execute a few safe syscalls
1798 defined by each seccomp mode.
1799
Stefano Stabellini06e62952013-10-15 15:47:14 +00001800config SWIOTLB
1801 def_bool y
1802
1803config IOMMU_HELPER
1804 def_bool SWIOTLB
1805
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001806config XEN_DOM0
1807 def_bool y
1808 depends on XEN
1809
1810config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001811 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001812 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001813 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001814 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001815 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001816 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001817 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001818 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001819 help
1820 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1821
Linus Torvalds1da177e2005-04-16 15:20:36 -07001822endmenu
1823
1824menu "Boot options"
1825
Grant Likely9eb8f672011-04-28 14:27:20 -06001826config USE_OF
1827 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001828 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001829 select OF
1830 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001831 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001832 help
1833 Include support for flattened device tree machine descriptions.
1834
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001835config ATAGS
1836 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1837 default y
1838 help
1839 This is the traditional way of passing data to the kernel at boot
1840 time. If you are solely relying on the flattened device tree (or
1841 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1842 to remove ATAGS support from your kernel binary. If unsure,
1843 leave this to y.
1844
1845config DEPRECATED_PARAM_STRUCT
1846 bool "Provide old way to pass kernel parameters"
1847 depends on ATAGS
1848 help
1849 This was deprecated in 2001 and announced to live on for 5 years.
1850 Some old boot loaders still use this way.
1851
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852# Compressed boot loader in ROM. Yes, we really want to ask about
1853# TEXT and BSS so we preserve their values in the config files.
1854config ZBOOT_ROM_TEXT
1855 hex "Compressed ROM boot loader base address"
1856 default "0"
1857 help
1858 The physical address at which the ROM-able zImage is to be
1859 placed in the target. Platforms which normally make use of
1860 ROM-able zImage formats normally set this to a suitable
1861 value in their defconfig file.
1862
1863 If ZBOOT_ROM is not enabled, this has no effect.
1864
1865config ZBOOT_ROM_BSS
1866 hex "Compressed ROM boot loader BSS address"
1867 default "0"
1868 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001869 The base address of an area of read/write memory in the target
1870 for the ROM-able zImage which must be available while the
1871 decompressor is running. It must be large enough to hold the
1872 entire decompressed kernel plus an additional 128 KiB.
1873 Platforms which normally make use of ROM-able zImage formats
1874 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001875
1876 If ZBOOT_ROM is not enabled, this has no effect.
1877
1878config ZBOOT_ROM
1879 bool "Compressed boot loader in ROM/flash"
1880 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001881 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882 help
1883 Say Y here if you intend to execute your compressed kernel image
1884 (zImage) directly from ROM or flash. If unsure, say N.
1885
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001886config ARM_APPENDED_DTB
1887 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001888 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001889 help
1890 With this option, the boot code will look for a device tree binary
1891 (DTB) appended to zImage
1892 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1893
1894 This is meant as a backward compatibility convenience for those
1895 systems with a bootloader that can't be upgraded to accommodate
1896 the documented boot protocol using a device tree.
1897
1898 Beware that there is very little in terms of protection against
1899 this option being confused by leftover garbage in memory that might
1900 look like a DTB header after a reboot if no actual DTB is appended
1901 to zImage. Do not leave this option active in a production kernel
1902 if you don't intend to always append a DTB. Proper passing of the
1903 location into r2 of a bootloader provided DTB is always preferable
1904 to this option.
1905
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001906config ARM_ATAG_DTB_COMPAT
1907 bool "Supplement the appended DTB with traditional ATAG information"
1908 depends on ARM_APPENDED_DTB
1909 help
1910 Some old bootloaders can't be updated to a DTB capable one, yet
1911 they provide ATAGs with memory configuration, the ramdisk address,
1912 the kernel cmdline string, etc. Such information is dynamically
1913 provided by the bootloader and can't always be stored in a static
1914 DTB. To allow a device tree enabled kernel to be used with such
1915 bootloaders, this option allows zImage to extract the information
1916 from the ATAG list and store it at run time into the appended DTB.
1917
Genoud Richardd0f34a112012-06-26 16:37:59 +01001918choice
1919 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1920 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1921
1922config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1923 bool "Use bootloader kernel arguments if available"
1924 help
1925 Uses the command-line options passed by the boot loader instead of
1926 the device tree bootargs property. If the boot loader doesn't provide
1927 any, the device tree bootargs property will be used.
1928
1929config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1930 bool "Extend with bootloader kernel arguments"
1931 help
1932 The command-line arguments provided by the boot loader will be
1933 appended to the the device tree bootargs property.
1934
1935endchoice
1936
Linus Torvalds1da177e2005-04-16 15:20:36 -07001937config CMDLINE
1938 string "Default kernel command string"
1939 default ""
1940 help
1941 On some architectures (EBSA110 and CATS), there is currently no way
1942 for the boot loader to pass arguments to the kernel. For these
1943 architectures, you should supply some command-line options at build
1944 time by entering them here. As a minimum, you should specify the
1945 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1946
Victor Boivie4394c122011-05-04 17:07:55 +01001947choice
1948 prompt "Kernel command line type" if CMDLINE != ""
1949 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001950 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001951
1952config CMDLINE_FROM_BOOTLOADER
1953 bool "Use bootloader kernel arguments if available"
1954 help
1955 Uses the command-line options passed by the boot loader. If
1956 the boot loader doesn't provide any, the default kernel command
1957 string provided in CMDLINE will be used.
1958
1959config CMDLINE_EXTEND
1960 bool "Extend bootloader kernel arguments"
1961 help
1962 The command-line arguments provided by the boot loader will be
1963 appended to the default kernel command string.
1964
Alexander Holler92d20402010-02-16 19:04:53 +01001965config CMDLINE_FORCE
1966 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001967 help
1968 Always use the default kernel command string, even if the boot
1969 loader passes other arguments to the kernel.
1970 This is useful if you cannot or don't want to change the
1971 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001972endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001973
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974config XIP_KERNEL
1975 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001976 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977 help
1978 Execute-In-Place allows the kernel to run from non-volatile storage
1979 directly addressable by the CPU, such as NOR flash. This saves RAM
1980 space since the text section of the kernel is not loaded from flash
1981 to RAM. Read-write sections, such as the data section and stack,
1982 are still copied to RAM. The XIP kernel is not compressed since
1983 it has to run directly from flash, so it will take more space to
1984 store it. The flash address used to link the kernel object files,
1985 and for storing it, is configuration dependent. Therefore, if you
1986 say Y here, you must know the proper physical address where to
1987 store the kernel image depending on your own flash memory usage.
1988
1989 Also note that the make target becomes "make xipImage" rather than
1990 "make zImage" or "make Image". The final kernel binary to put in
1991 ROM memory will be arch/arm/boot/xipImage.
1992
1993 If unsure, say N.
1994
1995config XIP_PHYS_ADDR
1996 hex "XIP Kernel Physical Location"
1997 depends on XIP_KERNEL
1998 default "0x00080000"
1999 help
2000 This is the physical address in your flash memory the kernel will
2001 be linked for and stored to. This address is dependent on your
2002 own flash usage.
2003
Richard Purdiec587e4a2007-02-06 21:29:00 +01002004config KEXEC
2005 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002006 depends on (!SMP || PM_SLEEP_SMP)
Arnd Bergmanncb1293e2015-05-26 15:40:44 +01002007 depends on !CPU_V7M
Richard Purdiec587e4a2007-02-06 21:29:00 +01002008 help
2009 kexec is a system call that implements the ability to shutdown your
2010 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002011 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002012 you can start any kernel with it, not just Linux.
2013
2014 It is an ongoing process to be certain the hardware in a machine
2015 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002016 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002017
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002018config ATAGS_PROC
2019 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002020 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002021 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002022 help
2023 Should the atags used to boot the kernel be exported in an "atags"
2024 file in procfs. Useful with kexec.
2025
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002026config CRASH_DUMP
2027 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002028 help
2029 Generate crash dump after being started by kexec. This should
2030 be normally only set in special crash dump kernels which are
2031 loaded in the main kernel with kexec-tools into a specially
2032 reserved region and then later executed after a crash by
2033 kdump/kexec. The crash dump kernel must be compiled to a
2034 memory address not used by the main kernel
2035
2036 For more details see Documentation/kdump/kdump.txt
2037
Eric Miaoe69edc792010-07-05 15:56:50 +02002038config AUTO_ZRELADDR
2039 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002040 help
2041 ZRELADDR is the physical address where the decompressed kernel
2042 image will be placed. If AUTO_ZRELADDR is selected, the address
2043 will be determined at run-time by masking the current IP with
2044 0xf8000000. This assumes the zImage being placed in the first 128MB
2045 from start of memory.
2046
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047endmenu
2048
Russell Kingac9d7ef2008-08-18 17:26:00 +01002049menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052
Russell Kingac9d7ef2008-08-18 17:26:00 +01002053source "drivers/cpuidle/Kconfig"
2054
2055endmenu
2056
Linus Torvalds1da177e2005-04-16 15:20:36 -07002057menu "Floating point emulation"
2058
2059comment "At least one emulation must be selected"
2060
2061config FPE_NWFPE
2062 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002063 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002064 ---help---
2065 Say Y to include the NWFPE floating point emulator in the kernel.
2066 This is necessary to run most binaries. Linux does not currently
2067 support floating point hardware so you need to say Y here even if
2068 your machine has an FPA or floating point co-processor podule.
2069
2070 You may say N here if you are going to load the Acorn FPEmulator
2071 early in the bootup.
2072
2073config FPE_NWFPE_XP
2074 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002075 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076 help
2077 Say Y to include 80-bit support in the kernel floating-point
2078 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2079 Note that gcc does not generate 80-bit operations by default,
2080 so in most cases this option only enlarges the size of the
2081 floating point emulator without any good reason.
2082
2083 You almost surely want to say N here.
2084
2085config FPE_FASTFPE
2086 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002087 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088 ---help---
2089 Say Y here to include the FAST floating point emulator in the kernel.
2090 This is an experimental much faster emulator which now also has full
2091 precision for the mantissa. It does not support any exceptions.
2092 It is very simple, and approximately 3-6 times faster than NWFPE.
2093
2094 It should be sufficient for most programs. It may be not suitable
2095 for scientific calculations, but you have to check this for yourself.
2096 If you do not feel you need a faster FP emulation you should better
2097 choose NWFPE.
2098
2099config VFP
2100 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002101 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102 help
2103 Say Y to include VFP support code in the kernel. This is needed
2104 if your hardware includes a VFP unit.
2105
2106 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2107 release notes and additional status information.
2108
2109 Say N if your target does not have VFP hardware.
2110
Catalin Marinas25ebee02007-09-25 15:22:24 +01002111config VFPv3
2112 bool
2113 depends on VFP
2114 default y if CPU_V7
2115
Catalin Marinasb5872db2008-01-10 19:16:17 +01002116config NEON
2117 bool "Advanced SIMD (NEON) Extension support"
2118 depends on VFPv3 && CPU_V7
2119 help
2120 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2121 Extension.
2122
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002123config KERNEL_MODE_NEON
2124 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002125 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002126 help
2127 Say Y to include support for NEON in kernel mode.
2128
Linus Torvalds1da177e2005-04-16 15:20:36 -07002129endmenu
2130
2131menu "Userspace binary formats"
2132
2133source "fs/Kconfig.binfmt"
2134
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135endmenu
2136
2137menu "Power management options"
2138
Russell Kingeceab4a2005-11-15 11:31:41 +00002139source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140
Johannes Bergf4cb5702007-12-08 02:14:00 +01002141config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002142 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002143 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002144 def_bool y
2145
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002146config ARM_CPU_SUSPEND
2147 def_bool PM_SLEEP
2148
Sebastian Capella603fb422014-03-25 01:20:29 +01002149config ARCH_HIBERNATION_POSSIBLE
2150 bool
2151 depends on MMU
2152 default y if ARCH_SUSPEND_POSSIBLE
2153
Linus Torvalds1da177e2005-04-16 15:20:36 -07002154endmenu
2155
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002156source "net/Kconfig"
2157
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002158source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159
Kumar Gala916f7432015-02-26 15:49:09 -06002160source "drivers/firmware/Kconfig"
2161
Linus Torvalds1da177e2005-04-16 15:20:36 -07002162source "fs/Kconfig"
2163
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164source "arch/arm/Kconfig.debug"
2165
2166source "security/Kconfig"
2167
2168source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002169if CRYPTO
2170source "arch/arm/crypto/Kconfig"
2171endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002172
2173source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002174
2175source "arch/arm/kvm/Kconfig"