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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
Ard Biesheuvel29373672015-09-01 08:59:28 +020023 select GENERIC_EARLY_IOREMAP
Russell King171b3f02013-09-12 21:24:42 +010024 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010025 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
Geert Uytterhoeven7c070052015-04-01 13:37:11 +010027 select GENERIC_IRQ_SHOW_LEVEL
Russell Kingb1b3f492012-10-06 17:12:25 +010028 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070029 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010030 select GENERIC_SMP_IDLE_THREAD
31 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010033 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010034 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090035 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010036 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Arnd Bergmanncfeec792015-05-26 15:38:01 +010037 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32
38 select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32
Kees Cook91702172013-11-09 00:51:56 +010039 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010040 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010041 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010042 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010043 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010044 select HAVE_C_RECORDMCOUNT
45 select HAVE_DEBUG_KMEMLEAK
46 select HAVE_DMA_API_DEBUG
47 select HAVE_DMA_ATTRS
48 select HAVE_DMA_CONTIGUOUS if MMU
Arnd Bergmanncfeec792015-05-26 15:38:01 +010049 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32
Will Deacondce5c9e2013-12-17 19:50:16 +010050 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010051 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
52 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
53 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
54 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010055 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
56 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010057 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010058 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070059 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010060 select HAVE_KERNEL_LZMA
61 select HAVE_KERNEL_LZO
62 select HAVE_KERNEL_XZ
Arnd Bergmanncb1293e2015-05-26 15:40:44 +010063 select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080064 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010065 select HAVE_MEMBLOCK
Ard Biesheuvel7d485f62014-11-24 16:54:35 +010066 select HAVE_MOD_ARCH_SPECIFIC
Russell Kingb1b3f492012-10-06 17:12:25 +010067 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080068 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010069 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010070 select HAVE_PERF_REGS
71 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070072 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010073 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010074 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070075 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070076 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010077 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010078 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040079 select NO_BOOTMEM
Arnd Bergmannaa7d5f12015-11-19 13:20:54 +010080 select OF_EARLY_FLATTREE if OF
81 select OF_RESERVED_MEM if OF
Russell King171b3f02013-09-12 21:24:42 +010082 select OLD_SIGACTION
83 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010084 select PERF_USE_VMALLOC
85 select RTC_LIB
86 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010087 # Above selects are sorted alphabetically; please add new ones
88 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 help
90 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000091 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000093 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 Europe. There is an ARM Linux project with a web page at
95 <http://www.arm.linux.org.uk/>.
96
Russell King74facff2011-06-02 11:16:22 +010097config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070098 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010099 bool
100
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200101config NEED_SG_DMA_LENGTH
102 bool
103
104config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200105 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100106 select ARM_HAS_SG_CHAIN
107 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200108
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900109if ARM_DMA_USE_IOMMU
110
111config ARM_DMA_IOMMU_ALIGNMENT
112 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
113 range 4 9
114 default 8
115 help
116 DMA mapping framework by default aligns all buffers to the smallest
117 PAGE_SIZE order which is greater than or equal to the requested buffer
118 size. This works well for buffers up to a few hundreds kilobytes, but
119 for larger buffers it just a waste of address space. Drivers which has
120 relatively small addressing window (like 64Mib) might run out of
121 virtual space with just a few allocations.
122
123 With this parameter you can specify the maximum PAGE_SIZE order for
124 DMA IOMMU buffers. Larger buffers will be aligned only to this
125 specified order. The order is expressed as a power of two multiplied
126 by the PAGE_SIZE.
127
128endif
129
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100130config MIGHT_HAVE_PCI
131 bool
132
Ralf Baechle75e71532007-02-09 17:08:58 +0000133config SYS_SUPPORTS_APM_EMULATION
134 bool
135
Linus Walleijbc581772009-09-15 17:30:37 +0100136config HAVE_TCM
137 bool
138 select GENERIC_ALLOCATOR
139
Russell Kinge119bff2010-01-10 17:23:29 +0000140config HAVE_PROC_CPU
141 bool
142
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700143config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000144 bool
Al Viro5ea81762007-02-11 15:41:31 +0000145
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146config EISA
147 bool
148 ---help---
149 The Extended Industry Standard Architecture (EISA) bus was
150 developed as an open alternative to the IBM MicroChannel bus.
151
152 The EISA bus provided some of the features of the IBM MicroChannel
153 bus while maintaining backward compatibility with cards made for
154 the older ISA bus. The EISA bus saw limited use between 1988 and
155 1995 when it was made obsolete by the PCI bus.
156
157 Say Y here if you are building a kernel for an EISA-based machine.
158
159 Otherwise, say N.
160
161config SBUS
162 bool
163
Russell Kingf16fb1e2007-04-28 09:59:37 +0100164config STACKTRACE_SUPPORT
165 bool
166 default y
167
Nicolas Pitref76e9152008-04-24 01:31:46 -0400168config HAVE_LATENCYTOP_SUPPORT
169 bool
170 depends on !SMP
171 default y
172
Russell Kingf16fb1e2007-04-28 09:59:37 +0100173config LOCKDEP_SUPPORT
174 bool
175 default y
176
Russell King7ad1bcb2006-08-27 12:07:02 +0100177config TRACE_IRQFLAGS_SUPPORT
178 bool
Arnd Bergmanncb1293e2015-05-26 15:40:44 +0100179 default !CPU_V7M
Russell King7ad1bcb2006-08-27 12:07:02 +0100180
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181config RWSEM_XCHGADD_ALGORITHM
182 bool
Will Deacon8a874112014-05-02 17:06:19 +0100183 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
David Howellsf0d1b0b2006-12-08 02:37:49 -0800185config ARCH_HAS_ILOG2_U32
186 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800187
188config ARCH_HAS_ILOG2_U64
189 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800190
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100191config ARCH_HAS_BANDGAP
192 bool
193
Stefan Agnera5f4c562015-08-13 00:01:52 +0100194config FIX_EARLYCON_MEM
195 def_bool y if MMU
196
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800197config GENERIC_HWEIGHT
198 bool
199 default y
200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201config GENERIC_CALIBRATE_DELAY
202 bool
203 default y
204
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100205config ARCH_MAY_HAVE_PC_FDC
206 bool
207
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800208config ZONE_DMA
209 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800210
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800211config NEED_DMA_MAP_STATE
212 def_bool y
213
David A. Longc7edc9e2014-03-07 11:23:04 -0500214config ARCH_SUPPORTS_UPROBES
215 def_bool y
216
Rob Herring58af4a22012-03-20 14:33:01 -0500217config ARCH_HAS_DMA_SET_COHERENT_MASK
218 bool
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220config GENERIC_ISA_DMA
221 bool
222
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223config FIQ
224 bool
225
Rob Herring13a50452012-02-07 09:28:22 -0600226config NEED_RET_TO_USER
227 bool
228
Al Viro034d2f52005-12-19 16:27:59 -0500229config ARCH_MTD_XIP
230 bool
231
Hyok S. Choic760fc12006-03-27 15:18:50 +0100232config VECTORS_BASE
233 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900234 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100235 default DRAM_BASE if REMAP_VECTORS_TO_RAM
236 default 0x00000000
237 help
Russell King19accfd2013-07-04 11:40:32 +0100238 The base address of exception vectors. This must be two pages
239 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100240
Russell Kingdc21af92011-01-04 19:09:43 +0000241config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100242 bool "Patch physical to virtual translations at runtime" if EMBEDDED
243 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100244 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000245 depends on !ARCH_REALVIEW || !SPARSEMEM
246 help
Russell King111e9a52011-05-12 10:02:42 +0100247 Patch phys-to-virt and virt-to-phys translation functions at
248 boot and module load time according to the position of the
249 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000250
Russell King111e9a52011-05-12 10:02:42 +0100251 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100252 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000253
Russell Kingc1beced2011-08-10 10:23:45 +0100254 Only disable this option if you know that you do not require
255 this feature (eg, building a kernel for a single machine) and
256 you need to shrink the kernel to the minimal size.
257
Rob Herringc334bc12012-03-04 22:03:33 -0600258config NEED_MACH_IO_H
259 bool
260 help
261 Select this when mach/io.h is required to provide special
262 definitions for this platform. The need for mach/io.h should
263 be avoided when possible.
264
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400265config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400266 bool
Russell King111e9a52011-05-12 10:02:42 +0100267 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400268 Select this when mach/memory.h is required to provide special
269 definitions for this platform. The need for mach/memory.h should
270 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400271
272config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100273 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100274 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100275 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100276 default 0x00000000 if ARCH_EBSA110 || \
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100277 ARCH_FOOTBRIDGE || \
278 ARCH_INTEGRATOR || \
279 ARCH_IOP13XX || \
280 ARCH_KS8695 || \
281 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
282 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
283 default 0x20000000 if ARCH_S5PV210
284 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700285 default 0xc0000000 if ARCH_SA1100
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400286 help
287 Please provide the physical address corresponding to the
288 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000289
Simon Glass87e040b2011-08-16 23:44:26 +0100290config GENERIC_BUG
291 def_bool y
292 depends on BUG
293
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700294config PGTABLE_LEVELS
295 int
296 default 3 if ARM_LPAE
297 default 2
298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299source "init/Kconfig"
300
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700301source "kernel/Kconfig.freezer"
302
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303menu "System Type"
304
Hyok S. Choi3c427972009-07-24 12:35:00 +0100305config MMU
306 bool "MMU-based Paged Memory Management Support"
307 default y
308 help
309 Select if you want MMU-based virtualised addressing space
310 support by paged memory management. If unsure, say 'Y'.
311
Russell Kingccf50e22010-03-15 19:03:06 +0000312#
313# The "ARM system type" choice list is ordered alphabetically by option
314# text. Please add new entries in the option alphabetic order.
315#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316choice
317 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100318 default ARCH_VERSATILE if !MMU
319 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Rob Herring387798b2012-09-06 13:41:12 -0500321config ARCH_MULTIPLATFORM
322 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100323 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600324 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700325 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500326 select ARM_PATCH_PHYS_VIRT
327 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500328 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600329 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600330 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100331 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500332 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600333 select SPARSE_IRQ
334 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600335
Stefan Agner9c77bc42015-05-20 00:03:51 +0200336config ARM_SINGLE_ARMV7M
337 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
338 depends on !MMU
339 select ARCH_WANT_OPTIONAL_GPIOLIB
340 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200341 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200342 select CLKSRC_OF
343 select COMMON_CLK
344 select CPU_V7M
345 select GENERIC_CLOCKEVENTS
346 select NO_IOPORT_MAP
347 select SPARSE_IRQ
348 select USE_OF
349
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100350config ARCH_REALVIEW
351 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100352 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100353 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100354 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200355 select COMMON_CLK
356 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100357 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100358 select GPIO_PL061 if GPIOLIB
359 select ICST
360 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000361 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000362 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100363 help
364 This enables support for ARM Ltd RealView boards.
365
366config ARCH_VERSATILE
367 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100368 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100369 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100370 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100371 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100372 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100373 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900374 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000375 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000376 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100377 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000378 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100379 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100380 help
381 This enables support for ARM Ltd Versatile board.
382
Russell King93e22562012-10-12 14:20:52 +0100383config ARCH_CLPS711X
384 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400385 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400386 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400387 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100388 select COMMON_CLK
389 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400390 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400391 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400392 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100393 help
394 Support for Cirrus Logic 711x/721x/731x based boards.
395
Russell King788c9702009-04-26 14:21:59 +0100396config ARCH_GEMINI
397 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100398 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200399 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100400 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200401 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100402 help
403 Support for the Cortina Systems Gemini family SoCs
404
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405config ARCH_EBSA110
406 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100407 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000408 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100409 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600410 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400411 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700412 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 help
414 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000415 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 Ethernet interface, two PCMCIA sockets, two serial ports and a
417 parallel port.
418
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000419config ARCH_EP93XX
420 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100421 select ARCH_HAS_HOLES_MEMORYMODEL
422 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000423 select ARM_AMBA
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700424 select ARM_PATCH_PHYS_VIRT
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000425 select ARM_VIC
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700426 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100427 select CLKDEV_LOOKUP
Linus Walleij000bc172015-06-15 14:34:03 +0200428 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100429 select CPU_ARM920T
Linus Walleij000bc172015-06-15 14:34:03 +0200430 select GENERIC_CLOCKEVENTS
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000431 help
432 This enables support for the Cirrus EP93xx series of CPUs.
433
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434config ARCH_FOOTBRIDGE
435 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000436 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000438 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200439 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600440 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400441 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000442 help
443 Support for systems based on the DC21285 companion chip
444 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100446config ARCH_NETX
447 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100448 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100449 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000450 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100451 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000452 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100453 This enables support for systems based on the Hilscher NetX Soc
454
Russell King3b938be2007-05-12 11:25:44 +0100455config ARCH_IOP13XX
456 bool "IOP13xx-based"
457 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100458 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400459 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600460 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100461 select PCI
462 select PLAT_IOP
463 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000464 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100465 help
466 Support for Intel's IOP13XX (XScale) family of processors.
467
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100468config ARCH_IOP32X
469 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100470 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100471 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000472 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200473 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600474 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100475 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100476 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000477 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100478 Support for Intel's 80219 and IOP32X (XScale) family of
479 processors.
480
481config ARCH_IOP33X
482 bool "IOP33x-based"
483 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100484 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000485 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200486 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600487 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100488 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100489 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100490 help
491 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
Russell King3b938be2007-05-12 11:25:44 +0100493config ARCH_IXP4XX
494 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100495 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500496 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100497 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100498 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100499 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000500 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100501 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100502 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100503 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600504 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200505 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100506 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100507 help
Russell King3b938be2007-05-12 11:25:44 +0100508 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100509
Saeed Bisharaedabd382009-08-06 15:12:43 +0300510config ARCH_DOVE
511 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300512 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100513 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300514 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100515 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100516 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100517 select PINCTRL
518 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200519 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300520 help
521 Support for the Marvell Dove SoC 88AP510
522
Russell King788c9702009-04-26 14:21:59 +0100523config ARCH_MV78XX0
524 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700525 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100526 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100527 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100528 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100529 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200530 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100531 help
532 Support for the following Marvell MV78xx0 series SoCs:
533 MV781x0, MV782x0.
534
535config ARCH_ORION5X
536 bool "Marvell Orion"
537 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700538 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100539 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100540 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100541 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100542 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200543 select PLAT_ORION_LEGACY
Benjamin Cama5be9fc22015-07-14 16:25:58 +0200544 select MULTI_IRQ_HANDLER
Russell King788c9702009-04-26 14:21:59 +0100545 help
546 Support for the following Marvell Orion 5x series SoCs:
547 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
548 Orion-2 (5281), Orion-1-90 (6183).
549
550config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500551 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100552 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100553 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100554 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100555 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100556 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800557 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800558 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800559 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800560 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100561 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400562 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100563 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500564 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100565
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100566config ARCH_KS8695
567 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100568 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200569 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100570 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200571 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100572 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100573 help
574 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
575 System-on-Chip devices.
576
Russell King788c9702009-04-26 14:21:59 +0100577config ARCH_W90X900
578 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100579 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100580 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100581 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100582 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100583 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200584 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100585 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
586 At present, the w90x900 has been renamed nuc900, regarding
587 the ARM series product line, you can login the following
588 link address to know more.
589
590 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
591 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400592
Russell King93e22562012-10-12 14:20:52 +0100593config ARCH_LPC32XX
594 bool "NXP LPC32XX"
595 select ARCH_REQUIRE_GPIOLIB
596 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000597 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100598 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100599 select CPU_ARM926T
600 select GENERIC_CLOCKEVENTS
601 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100602 select USE_OF
603 help
604 Support for the NXP LPC32XX family of processors
605
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700607 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100608 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100609 select ARCH_MTD_XIP
610 select ARCH_REQUIRE_GPIOLIB
611 select ARM_CPU_SUSPEND if PM
612 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100613 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100614 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100615 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200616 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100617 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800618 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100619 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100620 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100621 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800622 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800623 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000624 help
eric miao2c8086a2007-09-11 19:13:17 -0700625 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626
627config ARCH_RPC
628 bool "RiscPC"
Russell King868e87c2015-09-28 10:31:50 +0100629 depends on MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100631 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100632 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000633 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100634 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100635 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200636 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100637 select HAVE_PATA_PLATFORM
638 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600639 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400640 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700641 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100642 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 help
644 On the Acorn Risc-PC, Linux can support the internal IDE disk and
645 CD-ROM interface, serial and parallel port, and the floppy drive.
646
647config ARCH_SA1100
648 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100649 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700650 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100651 select ARCH_SPARSEMEM_ENABLE
652 select CLKDEV_LOOKUP
653 select CLKSRC_MMIO
654 select CPU_FREQ
655 select CPU_SA1100
656 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200657 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100658 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100659 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100660 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400661 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100662 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000663 help
664 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900666config ARCH_S3C24XX
667 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900668 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100669 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100670 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200671 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800672 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900673 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900674 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900675 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100676 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900677 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600678 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900679 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900681 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
682 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
683 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
684 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900685
Ben Dooksa08ab632008-10-21 14:06:39 +0100686config ARCH_S3C64XX
687 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900688 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200689 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100690 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100691 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100692 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200693 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900694 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900695 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800696 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900697 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900698 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900699 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100700 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700701 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100702 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100703 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100704 select S3C_DEV_NAND
705 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900706 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900707 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900708 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100709 help
710 Samsung S3C64XX series based systems
711
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100712config ARCH_DAVINCI
713 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100714 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700715 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100716 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700717 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100718 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100719 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100720 select HAVE_IDE
Sekhar Nori689e3312012-08-28 15:27:52 +0530721 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100722 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100723 help
724 Support for TI's DaVinci platform.
725
Tony Lindgrena0694862013-01-11 11:24:20 -0800726config ARCH_OMAP1
727 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600728 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100729 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800730 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100731 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200732 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100733 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100734 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800735 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800736 select HAVE_IDE
737 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700738 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800739 select NEED_MACH_IO_H if PCCARD
740 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700741 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100742 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800743 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800744
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745endchoice
746
Rob Herring387798b2012-09-06 13:41:12 -0500747menu "Multiple platform selection"
748 depends on ARCH_MULTIPLATFORM
749
750comment "CPU Core family selection"
751
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100752config ARCH_MULTI_V4
753 bool "ARMv4 based platforms (FA526)"
754 depends on !ARCH_MULTI_V6_V7
755 select ARCH_MULTI_V4_V5
756 select CPU_FA526
757
Rob Herring387798b2012-09-06 13:41:12 -0500758config ARCH_MULTI_V4T
759 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500760 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100761 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200762 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
763 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
764 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500765
766config ARCH_MULTI_V5
767 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500768 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100769 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100770 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200771 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
772 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500773
774config ARCH_MULTI_V4_V5
775 bool
776
777config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800778 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500779 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600780 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500781
782config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800783 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500784 default y
785 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100786 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600787 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500788
789config ARCH_MULTI_V6_V7
790 bool
Rob Herring9352b052014-01-31 15:36:10 -0600791 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500792
793config ARCH_MULTI_CPU_AUTO
794 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
795 select ARCH_MULTI_V5
796
797endmenu
798
Rob Herring05e2a3d2013-12-05 10:04:54 -0600799config ARCH_VIRT
800 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600801 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600802 select ARM_GIC
Jean-Philippe Brucker0b28f1d2015-10-01 13:47:18 +0100803 select ARM_GIC_V3
Rob Herring05e2a3d2013-12-05 10:04:54 -0600804 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600805 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600806
Russell Kingccf50e22010-03-15 19:03:06 +0000807#
808# This is sorted alphabetically by mach-* pathname. However, plat-*
809# Kconfigs may be included either alphabetically (according to the
810# plat- suffix) or along side the corresponding mach-* source.
811#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200812source "arch/arm/mach-mvebu/Kconfig"
813
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200814source "arch/arm/mach-alpine/Kconfig"
815
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100816source "arch/arm/mach-asm9260/Kconfig"
817
Russell King95b8f202010-01-14 11:43:54 +0000818source "arch/arm/mach-at91/Kconfig"
819
Anders Berg1d22924e2014-05-23 11:08:35 +0200820source "arch/arm/mach-axxia/Kconfig"
821
Christian Daudt8ac49e02012-11-19 09:46:10 -0800822source "arch/arm/mach-bcm/Kconfig"
823
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200824source "arch/arm/mach-berlin/Kconfig"
825
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826source "arch/arm/mach-clps711x/Kconfig"
827
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300828source "arch/arm/mach-cns3xxx/Kconfig"
829
Russell King95b8f202010-01-14 11:43:54 +0000830source "arch/arm/mach-davinci/Kconfig"
831
Baruch Siachdf8d7422015-01-14 10:40:30 +0200832source "arch/arm/mach-digicolor/Kconfig"
833
Russell King95b8f202010-01-14 11:43:54 +0000834source "arch/arm/mach-dove/Kconfig"
835
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000836source "arch/arm/mach-ep93xx/Kconfig"
837
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838source "arch/arm/mach-footbridge/Kconfig"
839
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200840source "arch/arm/mach-gemini/Kconfig"
841
Rob Herring387798b2012-09-06 13:41:12 -0500842source "arch/arm/mach-highbank/Kconfig"
843
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800844source "arch/arm/mach-hisi/Kconfig"
845
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846source "arch/arm/mach-integrator/Kconfig"
847
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100848source "arch/arm/mach-iop32x/Kconfig"
849
850source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851
Dan Williams285f5fa2006-12-07 02:59:39 +0100852source "arch/arm/mach-iop13xx/Kconfig"
853
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854source "arch/arm/mach-ixp4xx/Kconfig"
855
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400856source "arch/arm/mach-keystone/Kconfig"
857
Russell King95b8f202010-01-14 11:43:54 +0000858source "arch/arm/mach-ks8695/Kconfig"
859
Carlo Caione3b8f5032014-09-10 22:16:59 +0200860source "arch/arm/mach-meson/Kconfig"
861
Jonas Jensen17723fd32013-12-18 13:58:45 +0100862source "arch/arm/mach-moxart/Kconfig"
863
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200864source "arch/arm/mach-mv78xx0/Kconfig"
865
Shawn Guo3995eb82012-09-13 19:48:07 +0800866source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
Matthias Bruggerf682a212014-05-13 01:06:13 +0200868source "arch/arm/mach-mediatek/Kconfig"
869
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800870source "arch/arm/mach-mxs/Kconfig"
871
Russell King95b8f202010-01-14 11:43:54 +0000872source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800873
Russell King95b8f202010-01-14 11:43:54 +0000874source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000875
Daniel Tang9851ca52013-06-11 18:40:17 +1000876source "arch/arm/mach-nspire/Kconfig"
877
Tony Lindgrend48af152005-07-10 19:58:17 +0100878source "arch/arm/plat-omap/Kconfig"
879
880source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881
Tony Lindgren1dbae812005-11-10 14:26:51 +0000882source "arch/arm/mach-omap2/Kconfig"
883
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400884source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400885
Rob Herring387798b2012-09-06 13:41:12 -0500886source "arch/arm/mach-picoxcell/Kconfig"
887
Russell King95b8f202010-01-14 11:43:54 +0000888source "arch/arm/mach-pxa/Kconfig"
889source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890
Russell King95b8f202010-01-14 11:43:54 +0000891source "arch/arm/mach-mmp/Kconfig"
892
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600893source "arch/arm/mach-qcom/Kconfig"
894
Russell King95b8f202010-01-14 11:43:54 +0000895source "arch/arm/mach-realview/Kconfig"
896
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200897source "arch/arm/mach-rockchip/Kconfig"
898
Russell King95b8f202010-01-14 11:43:54 +0000899source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300900
Rob Herring387798b2012-09-06 13:41:12 -0500901source "arch/arm/mach-socfpga/Kconfig"
902
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100903source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100904
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100905source "arch/arm/mach-sti/Kconfig"
906
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900907source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Ben Dooks431107e2010-01-26 10:11:04 +0900909source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100910
Kukjin Kim170f4e42010-02-24 16:40:44 +0900911source "arch/arm/mach-s5pv210/Kconfig"
912
Kukjin Kim83014572011-11-06 13:54:56 +0900913source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500914source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900915
Russell King882d01f2010-03-02 23:40:15 +0000916source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917
Maxime Ripard3b526342012-11-08 12:40:16 +0100918source "arch/arm/mach-sunxi/Kconfig"
919
Barry Song156a0992012-08-23 13:41:58 +0800920source "arch/arm/mach-prima2/Kconfig"
921
Erik Gillingc5f80062010-01-21 16:53:02 -0800922source "arch/arm/mach-tegra/Kconfig"
923
Russell King95b8f202010-01-14 11:43:54 +0000924source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900926source "arch/arm/mach-uniphier/Kconfig"
927
Russell King95b8f202010-01-14 11:43:54 +0000928source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929
930source "arch/arm/mach-versatile/Kconfig"
931
Russell Kingceade892010-02-11 21:44:53 +0000932source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000933source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000934
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300935source "arch/arm/mach-vt8500/Kconfig"
936
wanzongshun7ec80dd2008-12-03 03:55:38 +0100937source "arch/arm/mach-w90x900/Kconfig"
938
Jun Nieacede512015-04-28 17:18:05 +0800939source "arch/arm/mach-zx/Kconfig"
940
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600941source "arch/arm/mach-zynq/Kconfig"
942
Stefan Agner499f1642015-05-21 00:35:44 +0200943# ARMv7-M architecture
944config ARCH_EFM32
945 bool "Energy Micro efm32"
946 depends on ARM_SINGLE_ARMV7M
947 select ARCH_REQUIRE_GPIOLIB
948 help
949 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
950 processors.
951
952config ARCH_LPC18XX
953 bool "NXP LPC18xx/LPC43xx"
954 depends on ARM_SINGLE_ARMV7M
955 select ARCH_HAS_RESET_CONTROLLER
956 select ARM_AMBA
957 select CLKSRC_LPC32XX
958 select PINCTRL
959 help
960 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
961 high performance microcontrollers.
962
963config ARCH_STM32
964 bool "STMicrolectronics STM32"
965 depends on ARM_SINGLE_ARMV7M
966 select ARCH_HAS_RESET_CONTROLLER
967 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200968 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200969 select RESET_CONTROLLER
970 help
971 Support for STMicroelectronics STM32 processors.
972
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973# Definitions to make life easier
974config ARCH_ACORN
975 bool
976
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100977config PLAT_IOP
978 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700979 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100980
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400981config PLAT_ORION
982 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100983 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100984 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100985 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200986 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400987
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200988config PLAT_ORION_LEGACY
989 bool
990 select PLAT_ORION
991
Eric Miaobd5ce432009-01-20 12:06:01 +0800992config PLAT_PXA
993 bool
994
Russell Kingf4b8b312010-01-14 12:48:06 +0000995config PLAT_VERSATILE
996 bool
997
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900998source "arch/arm/firmware/Kconfig"
999
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000source arch/arm/mm/Kconfig
1001
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001002config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001003 bool "Enable iWMMXt support"
1004 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1005 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001006 help
1007 Enable support for iWMMXt context switching at run time if
1008 running on a CPU that supports it.
1009
eric miao52108642010-12-13 09:42:34 +01001010config MULTI_IRQ_HANDLER
1011 bool
1012 help
1013 Allow each machine to specify it's own IRQ handler at run time.
1014
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001015if !MMU
1016source "arch/arm/Kconfig-nommu"
1017endif
1018
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001019config PJ4B_ERRATA_4742
1020 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1021 depends on CPU_PJ4B && MACH_ARMADA_370
1022 default y
1023 help
1024 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1025 Event (WFE) IDLE states, a specific timing sensitivity exists between
1026 the retiring WFI/WFE instructions and the newly issued subsequent
1027 instructions. This sensitivity can result in a CPU hang scenario.
1028 Workaround:
1029 The software must insert either a Data Synchronization Barrier (DSB)
1030 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1031 instruction
1032
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001033config ARM_ERRATA_326103
1034 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1035 depends on CPU_V6
1036 help
1037 Executing a SWP instruction to read-only memory does not set bit 11
1038 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1039 treat the access as a read, preventing a COW from occurring and
1040 causing the faulting task to livelock.
1041
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001042config ARM_ERRATA_411920
1043 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001044 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001045 help
1046 Invalidation of the Instruction Cache operation can
1047 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1048 It does not affect the MPCore. This option enables the ARM Ltd.
1049 recommended workaround.
1050
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001051config ARM_ERRATA_430973
1052 bool "ARM errata: Stale prediction on replaced interworking branch"
1053 depends on CPU_V7
1054 help
1055 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001056 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001057 interworking branch is replaced with another code sequence at the
1058 same virtual address, whether due to self-modifying code or virtual
1059 to physical address re-mapping, Cortex-A8 does not recover from the
1060 stale interworking branch prediction. This results in Cortex-A8
1061 executing the new code sequence in the incorrect ARM or Thumb state.
1062 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1063 and also flushes the branch target cache at every context switch.
1064 Note that setting specific bits in the ACTLR register may not be
1065 available in non-secure mode.
1066
Catalin Marinas855c5512009-04-30 17:06:15 +01001067config ARM_ERRATA_458693
1068 bool "ARM errata: Processor deadlock when a false hazard is created"
1069 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001070 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001071 help
1072 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1073 erratum. For very specific sequences of memory operations, it is
1074 possible for a hazard condition intended for a cache line to instead
1075 be incorrectly associated with a different cache line. This false
1076 hazard might then cause a processor deadlock. The workaround enables
1077 the L1 caching of the NEON accesses and disables the PLD instruction
1078 in the ACTLR register. Note that setting specific bits in the ACTLR
1079 register may not be available in non-secure mode.
1080
Catalin Marinas0516e462009-04-30 17:06:20 +01001081config ARM_ERRATA_460075
1082 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1083 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001084 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001085 help
1086 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1087 erratum. Any asynchronous access to the L2 cache may encounter a
1088 situation in which recent store transactions to the L2 cache are lost
1089 and overwritten with stale memory contents from external memory. The
1090 workaround disables the write-allocate mode for the L2 cache via the
1091 ACTLR register. Note that setting specific bits in the ACTLR register
1092 may not be available in non-secure mode.
1093
Will Deacon9f050272010-09-14 09:51:43 +01001094config ARM_ERRATA_742230
1095 bool "ARM errata: DMB operation may be faulty"
1096 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001097 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001098 help
1099 This option enables the workaround for the 742230 Cortex-A9
1100 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1101 between two write operations may not ensure the correct visibility
1102 ordering of the two writes. This workaround sets a specific bit in
1103 the diagnostic register of the Cortex-A9 which causes the DMB
1104 instruction to behave as a DSB, ensuring the correct behaviour of
1105 the two writes.
1106
Will Deacona672e992010-09-14 09:53:02 +01001107config ARM_ERRATA_742231
1108 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1109 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001110 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001111 help
1112 This option enables the workaround for the 742231 Cortex-A9
1113 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1114 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1115 accessing some data located in the same cache line, may get corrupted
1116 data due to bad handling of the address hazard when the line gets
1117 replaced from one of the CPUs at the same time as another CPU is
1118 accessing it. This workaround sets specific bits in the diagnostic
1119 register of the Cortex-A9 which reduces the linefill issuing
1120 capabilities of the processor.
1121
Jon Medhurst69155792013-06-07 10:35:35 +01001122config ARM_ERRATA_643719
1123 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1124 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001125 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001126 help
1127 This option enables the workaround for the 643719 Cortex-A9 (prior to
1128 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1129 register returns zero when it should return one. The workaround
1130 corrects this value, ensuring cache maintenance operations which use
1131 it behave as intended and avoiding data corruption.
1132
Will Deaconcdf357f2010-08-05 11:20:51 +01001133config ARM_ERRATA_720789
1134 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001135 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001136 help
1137 This option enables the workaround for the 720789 Cortex-A9 (prior to
1138 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1139 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1140 As a consequence of this erratum, some TLB entries which should be
1141 invalidated are not, resulting in an incoherency in the system page
1142 tables. The workaround changes the TLB flushing routines to invalidate
1143 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001144
1145config ARM_ERRATA_743622
1146 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1147 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001148 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001149 help
1150 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001151 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001152 optimisation in the Cortex-A9 Store Buffer may lead to data
1153 corruption. This workaround sets a specific bit in the diagnostic
1154 register of the Cortex-A9 which disables the Store Buffer
1155 optimisation, preventing the defect from occurring. This has no
1156 visible impact on the overall performance or power consumption of the
1157 processor.
1158
Will Deacon9a27c272011-02-18 16:36:35 +01001159config ARM_ERRATA_751472
1160 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001161 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001162 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001163 help
1164 This option enables the workaround for the 751472 Cortex-A9 (prior
1165 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1166 completion of a following broadcasted operation if the second
1167 operation is received by a CPU before the ICIALLUIS has completed,
1168 potentially leading to corrupted entries in the cache or TLB.
1169
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001170config ARM_ERRATA_754322
1171 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1172 depends on CPU_V7
1173 help
1174 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1175 r3p*) erratum. A speculative memory access may cause a page table walk
1176 which starts prior to an ASID switch but completes afterwards. This
1177 can populate the micro-TLB with a stale entry which may be hit with
1178 the new ASID. This workaround places two dsb instructions in the mm
1179 switching code so that no page table walks can cross the ASID switch.
1180
Will Deacon5dab26a2011-03-04 12:38:54 +01001181config ARM_ERRATA_754327
1182 bool "ARM errata: no automatic Store Buffer drain"
1183 depends on CPU_V7 && SMP
1184 help
1185 This option enables the workaround for the 754327 Cortex-A9 (prior to
1186 r2p0) erratum. The Store Buffer does not have any automatic draining
1187 mechanism and therefore a livelock may occur if an external agent
1188 continuously polls a memory location waiting to observe an update.
1189 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1190 written polling loops from denying visibility of updates to memory.
1191
Catalin Marinas145e10e2011-08-15 11:04:41 +01001192config ARM_ERRATA_364296
1193 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001194 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001195 help
1196 This options enables the workaround for the 364296 ARM1136
1197 r0p2 erratum (possible cache data corruption with
1198 hit-under-miss enabled). It sets the undocumented bit 31 in
1199 the auxiliary control register and the FI bit in the control
1200 register, thus disabling hit-under-miss without putting the
1201 processor into full low interrupt latency mode. ARM11MPCore
1202 is not affected.
1203
Will Deaconf630c1b2011-09-15 11:45:15 +01001204config ARM_ERRATA_764369
1205 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1206 depends on CPU_V7 && SMP
1207 help
1208 This option enables the workaround for erratum 764369
1209 affecting Cortex-A9 MPCore with two or more processors (all
1210 current revisions). Under certain timing circumstances, a data
1211 cache line maintenance operation by MVA targeting an Inner
1212 Shareable memory region may fail to proceed up to either the
1213 Point of Coherency or to the Point of Unification of the
1214 system. This workaround adds a DSB instruction before the
1215 relevant cache maintenance functions and sets a specific bit
1216 in the diagnostic control register of the SCU.
1217
Simon Horman7253b852012-09-28 02:12:45 +01001218config ARM_ERRATA_775420
1219 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1220 depends on CPU_V7
1221 help
1222 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1223 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1224 operation aborts with MMU exception, it might cause the processor
1225 to deadlock. This workaround puts DSB before executing ISB if
1226 an abort may occur on cache maintenance.
1227
Catalin Marinas93dc6882013-03-26 23:35:04 +01001228config ARM_ERRATA_798181
1229 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1230 depends on CPU_V7 && SMP
1231 help
1232 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1233 adequately shooting down all use of the old entries. This
1234 option enables the Linux kernel workaround for this erratum
1235 which sends an IPI to the CPUs that are running the same ASID
1236 as the one being invalidated.
1237
Will Deacon84b65042013-08-20 17:29:55 +01001238config ARM_ERRATA_773022
1239 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1240 depends on CPU_V7
1241 help
1242 This option enables the workaround for the 773022 Cortex-A15
1243 (up to r0p4) erratum. In certain rare sequences of code, the
1244 loop buffer may deliver incorrect instructions. This
1245 workaround disables the loop buffer to avoid the erratum.
1246
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247endmenu
1248
1249source "arch/arm/common/Kconfig"
1250
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251menu "Bus support"
1252
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253config ISA
1254 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 help
1256 Find out whether you have ISA slots on your motherboard. ISA is the
1257 name of a bus system, i.e. the way the CPU talks to the other stuff
1258 inside your box. Other bus systems are PCI, EISA, MicroChannel
1259 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1260 newer boards don't support it. If you have ISA, say Y, otherwise N.
1261
Russell King065909b2006-01-04 15:44:16 +00001262# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263config ISA_DMA
1264 bool
Russell King065909b2006-01-04 15:44:16 +00001265 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266
Russell King065909b2006-01-04 15:44:16 +00001267# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001268config ISA_DMA_API
1269 bool
Al Viro5cae8412005-05-04 05:39:22 +01001270
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001272 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 help
1274 Find out whether you have a PCI motherboard. PCI is the name of a
1275 bus system, i.e. the way the CPU talks to the other stuff inside
1276 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1277 VESA. If you have PCI, say Y, otherwise N.
1278
Anton Vorontsov52882172010-04-19 13:20:49 +01001279config PCI_DOMAINS
1280 bool
1281 depends on PCI
1282
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001283config PCI_DOMAINS_GENERIC
1284 def_bool PCI_DOMAINS
1285
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001286config PCI_NANOENGINE
1287 bool "BSE nanoEngine PCI support"
1288 depends on SA1100_NANOENGINE
1289 help
1290 Enable PCI on the BSE nanoEngine board.
1291
Matthew Wilcox36e23592007-07-10 10:54:40 -06001292config PCI_SYSCALL
1293 def_bool PCI
1294
Mike Rapoporta0113a92007-11-25 08:55:34 +01001295config PCI_HOST_ITE8152
1296 bool
1297 depends on PCI && MACH_ARMCORE
1298 default y
1299 select DMABOUNCE
1300
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001302source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303
1304source "drivers/pcmcia/Kconfig"
1305
1306endmenu
1307
1308menu "Kernel Features"
1309
Dave Martin3b556582011-12-07 15:38:04 +00001310config HAVE_SMP
1311 bool
1312 help
1313 This option should be selected by machines which have an SMP-
1314 capable CPU.
1315
1316 The only effect of this option is to make the SMP-related
1317 options available to the user for configuration.
1318
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001320 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001321 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001322 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001323 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001324 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001325 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 help
1327 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001328 a system with only one CPU, say N. If you have a system with more
1329 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330
Robert Graffham4a474152014-01-23 15:55:29 -08001331 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001333 you say Y here, the kernel will run on many, but not all,
1334 uniprocessor machines. On a uniprocessor machine, the kernel
1335 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336
Paul Bolle395cf962011-08-15 02:02:26 +02001337 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001339 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
1341 If you don't know what to do here, say N.
1342
Russell Kingf00ec482010-09-04 10:47:48 +01001343config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001344 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001345 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001346 default y
1347 help
1348 SMP kernels contain instructions which fail on non-SMP processors.
1349 Enabling this option allows the kernel to modify itself to make
1350 these instructions safe. Disabling it allows about 1K of space
1351 savings.
1352
1353 If you don't know what to do here, say Y.
1354
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001355config ARM_CPU_TOPOLOGY
1356 bool "Support cpu topology definition"
1357 depends on SMP && CPU_V7
1358 default y
1359 help
1360 Support ARM cpu topology definition. The MPIDR register defines
1361 affinity between processors which is then used to describe the cpu
1362 topology of an ARM System.
1363
1364config SCHED_MC
1365 bool "Multi-core scheduler support"
1366 depends on ARM_CPU_TOPOLOGY
1367 help
1368 Multi-core scheduler support improves the CPU scheduler's decision
1369 making when dealing with multi-core CPU chips at a cost of slightly
1370 increased overhead in some places. If unsure say N here.
1371
1372config SCHED_SMT
1373 bool "SMT scheduler support"
1374 depends on ARM_CPU_TOPOLOGY
1375 help
1376 Improves the CPU scheduler's decision making when dealing with
1377 MultiThreading at a cost of slightly increased overhead in some
1378 places. If unsure say N here.
1379
Russell Kinga8cbcd92009-05-16 11:51:14 +01001380config HAVE_ARM_SCU
1381 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001382 help
1383 This option enables support for the ARM system coherency unit
1384
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001385config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001386 bool "Architected timer support"
1387 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001388 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001389 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001390 help
1391 This option enables support for the ARM architected timer
1392
Russell Kingf32f4ce2009-05-16 12:14:21 +01001393config HAVE_ARM_TWD
1394 bool
Rob Herringda4a6862013-02-06 21:17:47 -06001395 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001396 help
1397 This options enables support for the ARM timer and watchdog unit
1398
Nicolas Pitree8db2882012-04-12 02:45:22 -04001399config MCPM
1400 bool "Multi-Cluster Power Management"
1401 depends on CPU_V7 && SMP
1402 help
1403 This option provides the common power management infrastructure
1404 for (multi-)cluster based systems, such as big.LITTLE based
1405 systems.
1406
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001407config MCPM_QUAD_CLUSTER
1408 bool
1409 depends on MCPM
1410 help
1411 To avoid wasting resources unnecessarily, MCPM only supports up
1412 to 2 clusters by default.
1413 Platforms with 3 or 4 clusters that use MCPM must select this
1414 option to allow the additional clusters to be managed.
1415
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001416config BIG_LITTLE
1417 bool "big.LITTLE support (Experimental)"
1418 depends on CPU_V7 && SMP
1419 select MCPM
1420 help
1421 This option enables support selections for the big.LITTLE
1422 system architecture.
1423
1424config BL_SWITCHER
1425 bool "big.LITTLE switcher support"
1426 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001427 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001428 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001429 help
1430 The big.LITTLE "switcher" provides the core functionality to
1431 transparently handle transition between a cluster of A15's
1432 and a cluster of A7's in a big.LITTLE system.
1433
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001434config BL_SWITCHER_DUMMY_IF
1435 tristate "Simple big.LITTLE switcher user interface"
1436 depends on BL_SWITCHER && DEBUG_KERNEL
1437 help
1438 This is a simple and dummy char dev interface to control
1439 the big.LITTLE switcher core code. It is meant for
1440 debugging purposes only.
1441
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001442choice
1443 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001444 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001445 default VMSPLIT_3G
1446 help
1447 Select the desired split between kernel and user memory.
1448
1449 If you are not absolutely sure what you are doing, leave this
1450 option alone!
1451
1452 config VMSPLIT_3G
1453 bool "3G/1G user/kernel split"
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001454 config VMSPLIT_3G_OPT
1455 bool "3G/1G user/kernel split (for full 1G low memory)"
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001456 config VMSPLIT_2G
1457 bool "2G/2G user/kernel split"
1458 config VMSPLIT_1G
1459 bool "1G/3G user/kernel split"
1460endchoice
1461
1462config PAGE_OFFSET
1463 hex
Russell King006fa252014-02-26 19:40:46 +00001464 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001465 default 0x40000000 if VMSPLIT_1G
1466 default 0x80000000 if VMSPLIT_2G
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001467 default 0xB0000000 if VMSPLIT_3G_OPT
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001468 default 0xC0000000
1469
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470config NR_CPUS
1471 int "Maximum number of CPUs (2-32)"
1472 range 2 32
1473 depends on SMP
1474 default "4"
1475
Russell Kinga054a812005-11-02 22:24:33 +00001476config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001477 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001478 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001479 help
1480 Say Y here to experiment with turning CPUs off and on. CPUs
1481 can be controlled through /sys/devices/system/cpu.
1482
Will Deacon2bdd4242012-12-12 19:20:52 +00001483config ARM_PSCI
1484 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1485 depends on CPU_V7
Mark Rutlandbe120392015-07-31 15:46:19 +01001486 select ARM_PSCI_FW
Will Deacon2bdd4242012-12-12 19:20:52 +00001487 help
1488 Say Y here if you want Linux to communicate with system firmware
1489 implementing the PSCI specification for CPU-centric power
1490 management operations described in ARM document number ARM DEN
1491 0022A ("Power State Coordination Interface System Software on
1492 ARM processors").
1493
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001494# The GPIO number here must be sorted by descending number. In case of
1495# a multiplatform kernel, we just want the highest value required by the
1496# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001497config ARCH_NR_GPIO
1498 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001499 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1500 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001501 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1502 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001503 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001504 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001505 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001506 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001507 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001508 default 0
1509 help
1510 Maximum number of GPIOs in the system.
1511
1512 If unsure, leave the default value.
1513
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001514source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515
Russell Kingc9218b12013-04-27 23:31:10 +01001516config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001517 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001518 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001519 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001520 default 128 if SOC_AT91RM9200
Russell King47d84682013-09-10 23:47:55 +01001521 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001522
1523choice
Russell King47d84682013-09-10 23:47:55 +01001524 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001525 prompt "Timer frequency"
1526
1527config HZ_100
1528 bool "100 Hz"
1529
1530config HZ_200
1531 bool "200 Hz"
1532
1533config HZ_250
1534 bool "250 Hz"
1535
1536config HZ_300
1537 bool "300 Hz"
1538
1539config HZ_500
1540 bool "500 Hz"
1541
1542config HZ_1000
1543 bool "1000 Hz"
1544
1545endchoice
1546
1547config HZ
1548 int
Russell King47d84682013-09-10 23:47:55 +01001549 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001550 default 100 if HZ_100
1551 default 200 if HZ_200
1552 default 250 if HZ_250
1553 default 300 if HZ_300
1554 default 500 if HZ_500
1555 default 1000
1556
1557config SCHED_HRTICK
1558 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001559
Catalin Marinas16c79652009-07-24 12:33:02 +01001560config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001561 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001562 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001563 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001564 select AEABI
1565 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001566 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001567 help
1568 By enabling this option, the kernel will be compiled in
1569 Thumb-2 mode. A compiler/assembler that understand the unified
1570 ARM-Thumb syntax is needed.
1571
1572 If unsure, say N.
1573
Dave Martin6f685c52011-03-03 11:41:12 +01001574config THUMB2_AVOID_R_ARM_THM_JUMP11
1575 bool "Work around buggy Thumb-2 short branch relocations in gas"
1576 depends on THUMB2_KERNEL && MODULES
1577 default y
1578 help
1579 Various binutils versions can resolve Thumb-2 branches to
1580 locally-defined, preemptible global symbols as short-range "b.n"
1581 branch instructions.
1582
1583 This is a problem, because there's no guarantee the final
1584 destination of the symbol, or any candidate locations for a
1585 trampoline, are within range of the branch. For this reason, the
1586 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1587 relocation in modules at all, and it makes little sense to add
1588 support.
1589
1590 The symptom is that the kernel fails with an "unsupported
1591 relocation" error when loading some modules.
1592
1593 Until fixed tools are available, passing
1594 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1595 code which hits this problem, at the cost of a bit of extra runtime
1596 stack usage in some cases.
1597
1598 The problem is described in more detail at:
1599 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1600
1601 Only Thumb-2 kernels are affected.
1602
1603 Unless you are sure your tools don't have this problem, say Y.
1604
Catalin Marinas0becb082009-07-24 12:32:53 +01001605config ARM_ASM_UNIFIED
1606 bool
1607
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001608config AEABI
1609 bool "Use the ARM EABI to compile the kernel"
1610 help
1611 This option allows for the kernel to be compiled using the latest
1612 ARM ABI (aka EABI). This is only useful if you are using a user
1613 space environment that is also compiled with EABI.
1614
1615 Since there are major incompatibilities between the legacy ABI and
1616 EABI, especially with regard to structure member alignment, this
1617 option also changes the kernel syscall calling convention to
1618 disambiguate both ABIs and allow for backward compatibility support
1619 (selected with CONFIG_OABI_COMPAT).
1620
1621 To use this you need GCC version 4.0.0 or later.
1622
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001623config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001624 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001625 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001626 help
1627 This option preserves the old syscall interface along with the
1628 new (ARM EABI) one. It also provides a compatibility layer to
1629 intercept syscalls that have structure arguments which layout
1630 in memory differs between the legacy ABI and the new ARM EABI
1631 (only for non "thumb" binaries). This option adds a tiny
1632 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001633
1634 The seccomp filter system will not be available when this is
1635 selected, since there is no way yet to sensibly distinguish
1636 between calling conventions during filtering.
1637
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001638 If you know you'll be using only pure EABI user space then you
1639 can say N here. If this option is not selected and you attempt
1640 to execute a legacy ABI binary then the result will be
1641 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001642 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001643
Mel Gormaneb335752009-05-13 17:34:48 +01001644config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001645 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001646
Russell King05944d72006-11-30 20:43:51 +00001647config ARCH_SPARSEMEM_ENABLE
1648 bool
1649
Russell King07a2f732008-10-01 21:39:58 +01001650config ARCH_SPARSEMEM_DEFAULT
1651 def_bool ARCH_SPARSEMEM_ENABLE
1652
Russell King05944d72006-11-30 20:43:51 +00001653config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001654 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001655
Will Deacon7b7bf492011-05-19 13:21:14 +01001656config HAVE_ARCH_PFN_VALID
1657 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1658
Steve Capperb8cd51a2014-10-09 15:29:20 -07001659config HAVE_GENERIC_RCU_GUP
1660 def_bool y
1661 depends on ARM_LPAE
1662
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001663config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001664 bool "High Memory Support"
1665 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001666 help
1667 The address space of ARM processors is only 4 Gigabytes large
1668 and it has to accommodate user address space, kernel address
1669 space as well as some memory mapped IO. That means that, if you
1670 have a large amount of physical memory and/or IO, not all of the
1671 memory can be "permanently mapped" by the kernel. The physical
1672 memory that is not permanently mapped is called "high memory".
1673
1674 Depending on the selected kernel/user memory split, minimum
1675 vmalloc space and actual amount of RAM, you may not need this
1676 option which should result in a slightly faster kernel.
1677
1678 If unsure, say n.
1679
Russell King65cec8e2009-08-17 20:02:06 +01001680config HIGHPTE
Russell King9a431bd2015-06-25 10:44:08 +01001681 bool "Allocate 2nd-level pagetables from highmem" if EXPERT
Russell King65cec8e2009-08-17 20:02:06 +01001682 depends on HIGHMEM
Russell King9a431bd2015-06-25 10:44:08 +01001683 default y
Russell Kingb4d103d2015-06-25 10:49:45 +01001684 help
1685 The VM uses one page of physical memory for each page table.
1686 For systems with a lot of processes, this can use a lot of
1687 precious low memory, eventually leading to low memory being
1688 consumed by page tables. Setting this option will allow
1689 user-space 2nd level page tables to reside in high memory.
Russell King65cec8e2009-08-17 20:02:06 +01001690
Russell Kinga5e090a2015-08-19 20:40:41 +01001691config CPU_SW_DOMAIN_PAN
1692 bool "Enable use of CPU domains to implement privileged no-access"
1693 depends on MMU && !ARM_LPAE
Jamie Iles1b8873a2010-02-02 20:25:44 +01001694 default y
1695 help
Russell Kinga5e090a2015-08-19 20:40:41 +01001696 Increase kernel security by ensuring that normal kernel accesses
1697 are unable to access userspace addresses. This can help prevent
1698 use-after-free bugs becoming an exploitable privilege escalation
1699 by ensuring that magic values (such as LIST_POISON) will always
1700 fault when dereferenced.
1701
1702 CPUs with low-vector mappings use a best-efforts implementation.
1703 Their lower 1MB needs to remain accessible for the vectors, but
1704 the remainder of userspace will become appropriately inaccessible.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001705
1706config HW_PERF_EVENTS
Mark Rutlandfa8ad782015-07-06 12:23:53 +01001707 def_bool y
1708 depends on ARM_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001709
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001710config SYS_SUPPORTS_HUGETLBFS
1711 def_bool y
1712 depends on ARM_LPAE
1713
Catalin Marinas8d962502012-07-25 14:39:26 +01001714config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1715 def_bool y
1716 depends on ARM_LPAE
1717
Steven Capper4bfab202013-07-26 14:58:22 +01001718config ARCH_WANT_GENERAL_HUGETLB
1719 def_bool y
1720
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001721config ARM_MODULE_PLTS
1722 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1723 depends on MODULES
1724 help
1725 Allocate PLTs when loading modules so that jumps and calls whose
1726 targets are too far away for their relative offsets to be encoded
1727 in the instructions themselves can be bounced via veneers in the
1728 module's PLT. This allows modules to be allocated in the generic
1729 vmalloc area after the dedicated module memory area has been
1730 exhausted. The modules will use slightly more memory, but after
1731 rounding up to page size, the actual memory footprint is usually
1732 the same.
1733
1734 Say y if you are getting out of memory errors while loading modules
1735
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736source "mm/Kconfig"
1737
Magnus Dammc1b2d972010-07-05 10:00:11 +01001738config FORCE_MAX_ZONEORDER
Ulrich Hecht36d6c922015-08-14 15:51:06 +02001739 int "Maximum zone order"
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001740 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001741 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001742 default "11"
1743 help
1744 The kernel memory allocator divides physically contiguous memory
1745 blocks into "zones", where each zone is a power of two number of
1746 pages. This option selects the largest power of two that the kernel
1747 keeps in the memory allocator. If you need to allocate very large
1748 blocks of physically contiguous memory, then you may need to
1749 increase this value.
1750
1751 This config option is actually maximum order plus one. For example,
1752 a value of 11 means that the largest free memory block is 2^10 pages.
1753
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754config ALIGNMENT_TRAP
1755 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001756 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001758 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001760 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001761 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1762 address divisible by 4. On 32-bit ARM processors, these non-aligned
1763 fetch/store instructions will be emulated in software if you say
1764 here, which has a severe performance impact. This is necessary for
1765 correct operation of some network protocols. With an IP-only
1766 configuration it is safe to say N, otherwise say Y.
1767
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001768config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001769 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1770 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001771 default y if CPU_FEROCEON
1772 help
1773 Implement faster copy_to_user and clear_user methods for CPU
1774 cores where a 8-word STM instruction give significantly higher
1775 memory write throughput than a sequence of individual 32bit stores.
1776
1777 A possible side effect is a slight increase in scheduling latency
1778 between threads sharing the same address space if they invoke
1779 such copy operations with large buffers.
1780
1781 However, if the CPU data cache is using a write-allocate mode,
1782 this option is unlikely to provide any performance gain.
1783
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001784config SECCOMP
1785 bool
1786 prompt "Enable seccomp to safely compute untrusted bytecode"
1787 ---help---
1788 This kernel feature is useful for number crunching applications
1789 that may need to compute untrusted bytecode during their
1790 execution. By using pipes or other transports made available to
1791 the process as file descriptors supporting the read/write
1792 syscalls, it's possible to isolate those applications in
1793 their own address space using seccomp. Once seccomp is
1794 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1795 and the task is only allowed to execute a few safe syscalls
1796 defined by each seccomp mode.
1797
Stefano Stabellini06e62952013-10-15 15:47:14 +00001798config SWIOTLB
1799 def_bool y
1800
1801config IOMMU_HELPER
1802 def_bool SWIOTLB
1803
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001804config XEN_DOM0
1805 def_bool y
1806 depends on XEN
1807
1808config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001809 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001810 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001811 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001812 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001813 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001814 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001815 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001816 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001817 help
1818 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1819
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820endmenu
1821
1822menu "Boot options"
1823
Grant Likely9eb8f672011-04-28 14:27:20 -06001824config USE_OF
1825 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001826 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001827 select OF
Grant Likely9eb8f672011-04-28 14:27:20 -06001828 help
1829 Include support for flattened device tree machine descriptions.
1830
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001831config ATAGS
1832 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1833 default y
1834 help
1835 This is the traditional way of passing data to the kernel at boot
1836 time. If you are solely relying on the flattened device tree (or
1837 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1838 to remove ATAGS support from your kernel binary. If unsure,
1839 leave this to y.
1840
1841config DEPRECATED_PARAM_STRUCT
1842 bool "Provide old way to pass kernel parameters"
1843 depends on ATAGS
1844 help
1845 This was deprecated in 2001 and announced to live on for 5 years.
1846 Some old boot loaders still use this way.
1847
Linus Torvalds1da177e2005-04-16 15:20:36 -07001848# Compressed boot loader in ROM. Yes, we really want to ask about
1849# TEXT and BSS so we preserve their values in the config files.
1850config ZBOOT_ROM_TEXT
1851 hex "Compressed ROM boot loader base address"
1852 default "0"
1853 help
1854 The physical address at which the ROM-able zImage is to be
1855 placed in the target. Platforms which normally make use of
1856 ROM-able zImage formats normally set this to a suitable
1857 value in their defconfig file.
1858
1859 If ZBOOT_ROM is not enabled, this has no effect.
1860
1861config ZBOOT_ROM_BSS
1862 hex "Compressed ROM boot loader BSS address"
1863 default "0"
1864 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001865 The base address of an area of read/write memory in the target
1866 for the ROM-able zImage which must be available while the
1867 decompressor is running. It must be large enough to hold the
1868 entire decompressed kernel plus an additional 128 KiB.
1869 Platforms which normally make use of ROM-able zImage formats
1870 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871
1872 If ZBOOT_ROM is not enabled, this has no effect.
1873
1874config ZBOOT_ROM
1875 bool "Compressed boot loader in ROM/flash"
1876 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001877 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001878 help
1879 Say Y here if you intend to execute your compressed kernel image
1880 (zImage) directly from ROM or flash. If unsure, say N.
1881
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001882config ARM_APPENDED_DTB
1883 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001884 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001885 help
1886 With this option, the boot code will look for a device tree binary
1887 (DTB) appended to zImage
1888 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1889
1890 This is meant as a backward compatibility convenience for those
1891 systems with a bootloader that can't be upgraded to accommodate
1892 the documented boot protocol using a device tree.
1893
1894 Beware that there is very little in terms of protection against
1895 this option being confused by leftover garbage in memory that might
1896 look like a DTB header after a reboot if no actual DTB is appended
1897 to zImage. Do not leave this option active in a production kernel
1898 if you don't intend to always append a DTB. Proper passing of the
1899 location into r2 of a bootloader provided DTB is always preferable
1900 to this option.
1901
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001902config ARM_ATAG_DTB_COMPAT
1903 bool "Supplement the appended DTB with traditional ATAG information"
1904 depends on ARM_APPENDED_DTB
1905 help
1906 Some old bootloaders can't be updated to a DTB capable one, yet
1907 they provide ATAGs with memory configuration, the ramdisk address,
1908 the kernel cmdline string, etc. Such information is dynamically
1909 provided by the bootloader and can't always be stored in a static
1910 DTB. To allow a device tree enabled kernel to be used with such
1911 bootloaders, this option allows zImage to extract the information
1912 from the ATAG list and store it at run time into the appended DTB.
1913
Genoud Richardd0f34a12012-06-26 16:37:59 +01001914choice
1915 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1916 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1917
1918config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1919 bool "Use bootloader kernel arguments if available"
1920 help
1921 Uses the command-line options passed by the boot loader instead of
1922 the device tree bootargs property. If the boot loader doesn't provide
1923 any, the device tree bootargs property will be used.
1924
1925config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1926 bool "Extend with bootloader kernel arguments"
1927 help
1928 The command-line arguments provided by the boot loader will be
1929 appended to the the device tree bootargs property.
1930
1931endchoice
1932
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933config CMDLINE
1934 string "Default kernel command string"
1935 default ""
1936 help
1937 On some architectures (EBSA110 and CATS), there is currently no way
1938 for the boot loader to pass arguments to the kernel. For these
1939 architectures, you should supply some command-line options at build
1940 time by entering them here. As a minimum, you should specify the
1941 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1942
Victor Boivie4394c122011-05-04 17:07:55 +01001943choice
1944 prompt "Kernel command line type" if CMDLINE != ""
1945 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001946 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001947
1948config CMDLINE_FROM_BOOTLOADER
1949 bool "Use bootloader kernel arguments if available"
1950 help
1951 Uses the command-line options passed by the boot loader. If
1952 the boot loader doesn't provide any, the default kernel command
1953 string provided in CMDLINE will be used.
1954
1955config CMDLINE_EXTEND
1956 bool "Extend bootloader kernel arguments"
1957 help
1958 The command-line arguments provided by the boot loader will be
1959 appended to the default kernel command string.
1960
Alexander Holler92d20402010-02-16 19:04:53 +01001961config CMDLINE_FORCE
1962 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001963 help
1964 Always use the default kernel command string, even if the boot
1965 loader passes other arguments to the kernel.
1966 This is useful if you cannot or don't want to change the
1967 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001968endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001969
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970config XIP_KERNEL
1971 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001972 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 help
1974 Execute-In-Place allows the kernel to run from non-volatile storage
1975 directly addressable by the CPU, such as NOR flash. This saves RAM
1976 space since the text section of the kernel is not loaded from flash
1977 to RAM. Read-write sections, such as the data section and stack,
1978 are still copied to RAM. The XIP kernel is not compressed since
1979 it has to run directly from flash, so it will take more space to
1980 store it. The flash address used to link the kernel object files,
1981 and for storing it, is configuration dependent. Therefore, if you
1982 say Y here, you must know the proper physical address where to
1983 store the kernel image depending on your own flash memory usage.
1984
1985 Also note that the make target becomes "make xipImage" rather than
1986 "make zImage" or "make Image". The final kernel binary to put in
1987 ROM memory will be arch/arm/boot/xipImage.
1988
1989 If unsure, say N.
1990
1991config XIP_PHYS_ADDR
1992 hex "XIP Kernel Physical Location"
1993 depends on XIP_KERNEL
1994 default "0x00080000"
1995 help
1996 This is the physical address in your flash memory the kernel will
1997 be linked for and stored to. This address is dependent on your
1998 own flash usage.
1999
Richard Purdiec587e4a2007-02-06 21:29:00 +01002000config KEXEC
2001 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002002 depends on (!SMP || PM_SLEEP_SMP)
Arnd Bergmanncb1293e2015-05-26 15:40:44 +01002003 depends on !CPU_V7M
Dave Young2965faa2015-09-09 15:38:55 -07002004 select KEXEC_CORE
Richard Purdiec587e4a2007-02-06 21:29:00 +01002005 help
2006 kexec is a system call that implements the ability to shutdown your
2007 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002008 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002009 you can start any kernel with it, not just Linux.
2010
2011 It is an ongoing process to be certain the hardware in a machine
2012 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002013 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002014
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002015config ATAGS_PROC
2016 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002017 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002018 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002019 help
2020 Should the atags used to boot the kernel be exported in an "atags"
2021 file in procfs. Useful with kexec.
2022
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002023config CRASH_DUMP
2024 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002025 help
2026 Generate crash dump after being started by kexec. This should
2027 be normally only set in special crash dump kernels which are
2028 loaded in the main kernel with kexec-tools into a specially
2029 reserved region and then later executed after a crash by
2030 kdump/kexec. The crash dump kernel must be compiled to a
2031 memory address not used by the main kernel
2032
2033 For more details see Documentation/kdump/kdump.txt
2034
Eric Miaoe69edc792010-07-05 15:56:50 +02002035config AUTO_ZRELADDR
2036 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002037 help
2038 ZRELADDR is the physical address where the decompressed kernel
2039 image will be placed. If AUTO_ZRELADDR is selected, the address
2040 will be determined at run-time by masking the current IP with
2041 0xf8000000. This assumes the zImage being placed in the first 128MB
2042 from start of memory.
2043
Roy Franz81a0bc32015-09-23 20:17:54 -07002044config EFI_STUB
2045 bool
2046
2047config EFI
2048 bool "UEFI runtime support"
2049 depends on OF && !CPU_BIG_ENDIAN && MMU && AUTO_ZRELADDR && !XIP_KERNEL
2050 select UCS2_STRING
2051 select EFI_PARAMS_FROM_FDT
2052 select EFI_STUB
2053 select EFI_ARMSTUB
2054 select EFI_RUNTIME_WRAPPERS
2055 ---help---
2056 This option provides support for runtime services provided
2057 by UEFI firmware (such as non-volatile variables, realtime
2058 clock, and platform reset). A UEFI stub is also provided to
2059 allow the kernel to be booted as an EFI application. This
2060 is only useful for kernels that may run on systems that have
2061 UEFI firmware.
2062
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063endmenu
2064
Russell Kingac9d7ef2008-08-18 17:26:00 +01002065menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068
Russell Kingac9d7ef2008-08-18 17:26:00 +01002069source "drivers/cpuidle/Kconfig"
2070
2071endmenu
2072
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073menu "Floating point emulation"
2074
2075comment "At least one emulation must be selected"
2076
2077config FPE_NWFPE
2078 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002079 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080 ---help---
2081 Say Y to include the NWFPE floating point emulator in the kernel.
2082 This is necessary to run most binaries. Linux does not currently
2083 support floating point hardware so you need to say Y here even if
2084 your machine has an FPA or floating point co-processor podule.
2085
2086 You may say N here if you are going to load the Acorn FPEmulator
2087 early in the bootup.
2088
2089config FPE_NWFPE_XP
2090 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002091 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002092 help
2093 Say Y to include 80-bit support in the kernel floating-point
2094 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2095 Note that gcc does not generate 80-bit operations by default,
2096 so in most cases this option only enlarges the size of the
2097 floating point emulator without any good reason.
2098
2099 You almost surely want to say N here.
2100
2101config FPE_FASTFPE
2102 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002103 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 ---help---
2105 Say Y here to include the FAST floating point emulator in the kernel.
2106 This is an experimental much faster emulator which now also has full
2107 precision for the mantissa. It does not support any exceptions.
2108 It is very simple, and approximately 3-6 times faster than NWFPE.
2109
2110 It should be sufficient for most programs. It may be not suitable
2111 for scientific calculations, but you have to check this for yourself.
2112 If you do not feel you need a faster FP emulation you should better
2113 choose NWFPE.
2114
2115config VFP
2116 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002117 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002118 help
2119 Say Y to include VFP support code in the kernel. This is needed
2120 if your hardware includes a VFP unit.
2121
2122 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2123 release notes and additional status information.
2124
2125 Say N if your target does not have VFP hardware.
2126
Catalin Marinas25ebee02007-09-25 15:22:24 +01002127config VFPv3
2128 bool
2129 depends on VFP
2130 default y if CPU_V7
2131
Catalin Marinasb5872db2008-01-10 19:16:17 +01002132config NEON
2133 bool "Advanced SIMD (NEON) Extension support"
2134 depends on VFPv3 && CPU_V7
2135 help
2136 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2137 Extension.
2138
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002139config KERNEL_MODE_NEON
2140 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002141 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002142 help
2143 Say Y to include support for NEON in kernel mode.
2144
Linus Torvalds1da177e2005-04-16 15:20:36 -07002145endmenu
2146
2147menu "Userspace binary formats"
2148
2149source "fs/Kconfig.binfmt"
2150
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151endmenu
2152
2153menu "Power management options"
2154
Russell Kingeceab4a2005-11-15 11:31:41 +00002155source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156
Johannes Bergf4cb5702007-12-08 02:14:00 +01002157config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002158 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002159 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002160 def_bool y
2161
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002162config ARM_CPU_SUSPEND
2163 def_bool PM_SLEEP
2164
Sebastian Capella603fb422014-03-25 01:20:29 +01002165config ARCH_HIBERNATION_POSSIBLE
2166 bool
2167 depends on MMU
2168 default y if ARCH_SUSPEND_POSSIBLE
2169
Linus Torvalds1da177e2005-04-16 15:20:36 -07002170endmenu
2171
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002172source "net/Kconfig"
2173
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002174source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002175
Kumar Gala916f7432015-02-26 15:49:09 -06002176source "drivers/firmware/Kconfig"
2177
Linus Torvalds1da177e2005-04-16 15:20:36 -07002178source "fs/Kconfig"
2179
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180source "arch/arm/Kconfig.debug"
2181
2182source "security/Kconfig"
2183
2184source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002185if CRYPTO
2186source "arch/arm/crypto/Kconfig"
2187endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188
2189source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002190
2191source "arch/arm/kvm/Kconfig"