blob: 1bcda7cb2e0405a9d5fda7d8805f9f92ba7d665c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Catalin Marinas74634492012-07-30 14:41:09 -07004 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Kees Cook2b68f6c2015-04-14 15:48:00 -07005 select ARCH_HAS_ELF_RANDOMIZE
Mark Rutland3d067702012-10-30 12:13:42 +00006 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Russell King171b3f02013-09-12 21:24:42 +01007 select ARCH_HAVE_CUSTOM_GPIO_H
Riku Voipio957e3fa2014-12-12 16:57:44 -08008 select ARCH_HAS_GCOV_PROFILE_ALL
Mark Salterd7018842013-10-07 22:07:58 -04009 select ARCH_MIGHT_HAVE_PC_PARPORT
Peter Zijlstra4badad32014-06-06 19:53:16 +020010 select ARCH_SUPPORTS_ATOMIC_RMW
Kim Phillips017f1612013-11-06 05:15:24 +010011 select ARCH_USE_BUILTIN_BSWAP
Will Deacon0cbad9c2013-10-09 17:19:22 +010012 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010013 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010014 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010015 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010016 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacondce5c9e2013-12-17 19:50:16 +010017 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
Borislav Petkovb01aec92015-05-21 19:59:31 +020018 select EDAC_SUPPORT
19 select EDAC_ATOMIC_SCRUB
Laura Abbott36d0fd22014-10-09 15:26:42 -070020 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010021 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010023 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010024 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
Geert Uytterhoeven7c070052015-04-01 13:37:11 +010026 select GENERIC_IRQ_SHOW_LEVEL
Russell Kingb1b3f492012-10-06 17:12:25 +010027 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070028 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010029 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_STRNCPY_FROM_USER
31 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010032 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010033 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090034 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010035 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Arnd Bergmanncfeec792015-05-26 15:38:01 +010036 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32
37 select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32
Kees Cook91702172013-11-09 00:51:56 +010038 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010039 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010040 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010041 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010042 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010043 select HAVE_C_RECORDMCOUNT
44 select HAVE_DEBUG_KMEMLEAK
45 select HAVE_DMA_API_DEBUG
46 select HAVE_DMA_ATTRS
47 select HAVE_DMA_CONTIGUOUS if MMU
Arnd Bergmanncfeec792015-05-26 15:38:01 +010048 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32
Will Deacondce5c9e2013-12-17 19:50:16 +010049 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010050 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
51 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
52 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
53 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
55 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010056 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010057 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070058 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010059 select HAVE_KERNEL_LZMA
60 select HAVE_KERNEL_LZO
61 select HAVE_KERNEL_XZ
Arnd Bergmanncb1293e2015-05-26 15:40:44 +010062 select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080063 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010064 select HAVE_MEMBLOCK
Ard Biesheuvel7d485f62014-11-24 16:54:35 +010065 select HAVE_MOD_ARCH_SPECIFIC
Russell Kingb1b3f492012-10-06 17:12:25 +010066 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080067 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010068 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010069 select HAVE_PERF_REGS
70 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070071 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010072 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010073 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070074 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070075 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010076 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010077 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040078 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010079 select OLD_SIGACTION
80 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010081 select PERF_USE_VMALLOC
82 select RTC_LIB
83 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010084 # Above selects are sorted alphabetically; please add new ones
85 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 help
87 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000088 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000090 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 Europe. There is an ARM Linux project with a web page at
92 <http://www.arm.linux.org.uk/>.
93
Russell King74facff2011-06-02 11:16:22 +010094config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070095 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010096 bool
97
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020098config NEED_SG_DMA_LENGTH
99 bool
100
101config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200102 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100103 select ARM_HAS_SG_CHAIN
104 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200105
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900106if ARM_DMA_USE_IOMMU
107
108config ARM_DMA_IOMMU_ALIGNMENT
109 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
110 range 4 9
111 default 8
112 help
113 DMA mapping framework by default aligns all buffers to the smallest
114 PAGE_SIZE order which is greater than or equal to the requested buffer
115 size. This works well for buffers up to a few hundreds kilobytes, but
116 for larger buffers it just a waste of address space. Drivers which has
117 relatively small addressing window (like 64Mib) might run out of
118 virtual space with just a few allocations.
119
120 With this parameter you can specify the maximum PAGE_SIZE order for
121 DMA IOMMU buffers. Larger buffers will be aligned only to this
122 specified order. The order is expressed as a power of two multiplied
123 by the PAGE_SIZE.
124
125endif
126
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100127config MIGHT_HAVE_PCI
128 bool
129
Ralf Baechle75e71532007-02-09 17:08:58 +0000130config SYS_SUPPORTS_APM_EMULATION
131 bool
132
Linus Walleijbc581772009-09-15 17:30:37 +0100133config HAVE_TCM
134 bool
135 select GENERIC_ALLOCATOR
136
Russell Kinge119bff2010-01-10 17:23:29 +0000137config HAVE_PROC_CPU
138 bool
139
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700140config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000141 bool
Al Viro5ea81762007-02-11 15:41:31 +0000142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143config EISA
144 bool
145 ---help---
146 The Extended Industry Standard Architecture (EISA) bus was
147 developed as an open alternative to the IBM MicroChannel bus.
148
149 The EISA bus provided some of the features of the IBM MicroChannel
150 bus while maintaining backward compatibility with cards made for
151 the older ISA bus. The EISA bus saw limited use between 1988 and
152 1995 when it was made obsolete by the PCI bus.
153
154 Say Y here if you are building a kernel for an EISA-based machine.
155
156 Otherwise, say N.
157
158config SBUS
159 bool
160
Russell Kingf16fb1e2007-04-28 09:59:37 +0100161config STACKTRACE_SUPPORT
162 bool
163 default y
164
Nicolas Pitref76e9152008-04-24 01:31:46 -0400165config HAVE_LATENCYTOP_SUPPORT
166 bool
167 depends on !SMP
168 default y
169
Russell Kingf16fb1e2007-04-28 09:59:37 +0100170config LOCKDEP_SUPPORT
171 bool
172 default y
173
Russell King7ad1bcb2006-08-27 12:07:02 +0100174config TRACE_IRQFLAGS_SUPPORT
175 bool
Arnd Bergmanncb1293e2015-05-26 15:40:44 +0100176 default !CPU_V7M
Russell King7ad1bcb2006-08-27 12:07:02 +0100177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178config RWSEM_XCHGADD_ALGORITHM
179 bool
Will Deacon8a874112014-05-02 17:06:19 +0100180 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
David Howellsf0d1b0b2006-12-08 02:37:49 -0800182config ARCH_HAS_ILOG2_U32
183 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800184
185config ARCH_HAS_ILOG2_U64
186 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800187
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100188config ARCH_HAS_BANDGAP
189 bool
190
Stefan Agnera5f4c562015-08-13 00:01:52 +0100191config FIX_EARLYCON_MEM
192 def_bool y if MMU
193
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800194config GENERIC_HWEIGHT
195 bool
196 default y
197
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198config GENERIC_CALIBRATE_DELAY
199 bool
200 default y
201
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100202config ARCH_MAY_HAVE_PC_FDC
203 bool
204
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800205config ZONE_DMA
206 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800207
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800208config NEED_DMA_MAP_STATE
209 def_bool y
210
David A. Longc7edc9e2014-03-07 11:23:04 -0500211config ARCH_SUPPORTS_UPROBES
212 def_bool y
213
Rob Herring58af4a22012-03-20 14:33:01 -0500214config ARCH_HAS_DMA_SET_COHERENT_MASK
215 bool
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217config GENERIC_ISA_DMA
218 bool
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220config FIQ
221 bool
222
Rob Herring13a50452012-02-07 09:28:22 -0600223config NEED_RET_TO_USER
224 bool
225
Al Viro034d2f52005-12-19 16:27:59 -0500226config ARCH_MTD_XIP
227 bool
228
Hyok S. Choic760fc12006-03-27 15:18:50 +0100229config VECTORS_BASE
230 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900231 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100232 default DRAM_BASE if REMAP_VECTORS_TO_RAM
233 default 0x00000000
234 help
Russell King19accfd2013-07-04 11:40:32 +0100235 The base address of exception vectors. This must be two pages
236 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100237
Russell Kingdc21af92011-01-04 19:09:43 +0000238config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100239 bool "Patch physical to virtual translations at runtime" if EMBEDDED
240 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100241 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000242 depends on !ARCH_REALVIEW || !SPARSEMEM
243 help
Russell King111e9a52011-05-12 10:02:42 +0100244 Patch phys-to-virt and virt-to-phys translation functions at
245 boot and module load time according to the position of the
246 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000247
Russell King111e9a52011-05-12 10:02:42 +0100248 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100249 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000250
Russell Kingc1beced2011-08-10 10:23:45 +0100251 Only disable this option if you know that you do not require
252 this feature (eg, building a kernel for a single machine) and
253 you need to shrink the kernel to the minimal size.
254
Rob Herringc334bc12012-03-04 22:03:33 -0600255config NEED_MACH_IO_H
256 bool
257 help
258 Select this when mach/io.h is required to provide special
259 definitions for this platform. The need for mach/io.h should
260 be avoided when possible.
261
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400262config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400263 bool
Russell King111e9a52011-05-12 10:02:42 +0100264 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400265 Select this when mach/memory.h is required to provide special
266 definitions for this platform. The need for mach/memory.h should
267 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400268
269config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100270 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100271 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100272 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100273 default 0x00000000 if ARCH_EBSA110 || \
274 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
275 ARCH_FOOTBRIDGE || \
276 ARCH_INTEGRATOR || \
277 ARCH_IOP13XX || \
278 ARCH_KS8695 || \
279 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
280 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
281 default 0x20000000 if ARCH_S5PV210
282 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
283 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
284 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
285 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
286 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400287 help
288 Please provide the physical address corresponding to the
289 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000290
Simon Glass87e040b2011-08-16 23:44:26 +0100291config GENERIC_BUG
292 def_bool y
293 depends on BUG
294
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700295config PGTABLE_LEVELS
296 int
297 default 3 if ARM_LPAE
298 default 2
299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300source "init/Kconfig"
301
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700302source "kernel/Kconfig.freezer"
303
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304menu "System Type"
305
Hyok S. Choi3c427972009-07-24 12:35:00 +0100306config MMU
307 bool "MMU-based Paged Memory Management Support"
308 default y
309 help
310 Select if you want MMU-based virtualised addressing space
311 support by paged memory management. If unsure, say 'Y'.
312
Russell Kingccf50e22010-03-15 19:03:06 +0000313#
314# The "ARM system type" choice list is ordered alphabetically by option
315# text. Please add new entries in the option alphabetic order.
316#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317choice
318 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100319 default ARCH_VERSATILE if !MMU
320 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321
Rob Herring387798b2012-09-06 13:41:12 -0500322config ARCH_MULTIPLATFORM
323 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100324 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600325 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700326 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500327 select ARM_PATCH_PHYS_VIRT
328 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500329 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600330 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600331 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100332 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500333 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600334 select SPARSE_IRQ
335 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600336
Stefan Agner9c77bc42015-05-20 00:03:51 +0200337config ARM_SINGLE_ARMV7M
338 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
339 depends on !MMU
340 select ARCH_WANT_OPTIONAL_GPIOLIB
341 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200342 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200343 select CLKSRC_OF
344 select COMMON_CLK
345 select CPU_V7M
346 select GENERIC_CLOCKEVENTS
347 select NO_IOPORT_MAP
348 select SPARSE_IRQ
349 select USE_OF
350
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100351config ARCH_REALVIEW
352 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100353 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100354 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100355 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200356 select COMMON_CLK
357 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100358 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100359 select GPIO_PL061 if GPIOLIB
360 select ICST
361 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000362 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000363 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100364 help
365 This enables support for ARM Ltd RealView boards.
366
367config ARCH_VERSATILE
368 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100369 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100370 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100371 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100372 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100373 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100374 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900375 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000376 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000377 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100378 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000379 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100380 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100381 help
382 This enables support for ARM Ltd Versatile board.
383
Russell King93e22562012-10-12 14:20:52 +0100384config ARCH_CLPS711X
385 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400386 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400387 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400388 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100389 select COMMON_CLK
390 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400391 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400392 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400393 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100394 help
395 Support for Cirrus Logic 711x/721x/731x based boards.
396
Russell King788c9702009-04-26 14:21:59 +0100397config ARCH_GEMINI
398 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100399 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200400 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100401 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200402 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100403 help
404 Support for the Cortina Systems Gemini family SoCs
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406config ARCH_EBSA110
407 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100408 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000409 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100410 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600411 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400412 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700413 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 help
415 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000416 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 Ethernet interface, two PCMCIA sockets, two serial ports and a
418 parallel port.
419
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000420config ARCH_EP93XX
421 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100422 select ARCH_HAS_HOLES_MEMORYMODEL
423 select ARCH_REQUIRE_GPIOLIB
424 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000425 select ARM_AMBA
426 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100427 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100428 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000429 help
430 This enables support for the Cirrus EP93xx series of CPUs.
431
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432config ARCH_FOOTBRIDGE
433 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000434 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000436 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200437 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600438 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400439 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000440 help
441 Support for systems based on the DC21285 companion chip
442 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100444config ARCH_NETX
445 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100446 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100447 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000448 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100449 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000450 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100451 This enables support for systems based on the Hilscher NetX Soc
452
Russell King3b938be2007-05-12 11:25:44 +0100453config ARCH_IOP13XX
454 bool "IOP13xx-based"
455 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100456 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400457 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600458 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100459 select PCI
460 select PLAT_IOP
461 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000462 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100463 help
464 Support for Intel's IOP13XX (XScale) family of processors.
465
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100466config ARCH_IOP32X
467 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100468 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100469 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000470 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200471 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600472 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100473 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100474 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000475 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100476 Support for Intel's 80219 and IOP32X (XScale) family of
477 processors.
478
479config ARCH_IOP33X
480 bool "IOP33x-based"
481 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100482 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000483 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200484 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600485 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100486 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100487 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100488 help
489 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
Russell King3b938be2007-05-12 11:25:44 +0100491config ARCH_IXP4XX
492 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100493 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500494 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100495 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100496 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100497 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000498 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100499 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100500 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100501 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600502 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200503 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100504 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100505 help
Russell King3b938be2007-05-12 11:25:44 +0100506 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100507
Saeed Bisharaedabd382009-08-06 15:12:43 +0300508config ARCH_DOVE
509 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300510 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100511 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300512 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100513 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100514 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100515 select PINCTRL
516 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200517 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300518 help
519 Support for the Marvell Dove SoC 88AP510
520
Russell King788c9702009-04-26 14:21:59 +0100521config ARCH_MV78XX0
522 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700523 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100524 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100525 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100526 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100527 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200528 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100529 help
530 Support for the following Marvell MV78xx0 series SoCs:
531 MV781x0, MV782x0.
532
533config ARCH_ORION5X
534 bool "Marvell Orion"
535 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700536 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100537 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100538 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100539 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100540 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200541 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100542 help
543 Support for the following Marvell Orion 5x series SoCs:
544 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
545 Orion-2 (5281), Orion-1-90 (6183).
546
547config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500548 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100549 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100550 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100551 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100552 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100553 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800554 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800555 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800556 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800557 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100558 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400559 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100560 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500561 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100562
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100563config ARCH_KS8695
564 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100565 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200566 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100567 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200568 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100569 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100570 help
571 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
572 System-on-Chip devices.
573
Russell King788c9702009-04-26 14:21:59 +0100574config ARCH_W90X900
575 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100576 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100577 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100578 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100579 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100580 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200581 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100582 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
583 At present, the w90x900 has been renamed nuc900, regarding
584 the ARM series product line, you can login the following
585 link address to know more.
586
587 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
588 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400589
Russell King93e22562012-10-12 14:20:52 +0100590config ARCH_LPC32XX
591 bool "NXP LPC32XX"
592 select ARCH_REQUIRE_GPIOLIB
593 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000594 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100595 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100596 select CPU_ARM926T
597 select GENERIC_CLOCKEVENTS
598 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100599 select USE_OF
600 help
601 Support for the NXP LPC32XX family of processors
602
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700604 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100605 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100606 select ARCH_MTD_XIP
607 select ARCH_REQUIRE_GPIOLIB
608 select ARM_CPU_SUSPEND if PM
609 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100610 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100611 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100612 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200613 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100614 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800615 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100616 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100617 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100618 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800619 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800620 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000621 help
eric miao2c8086a2007-09-11 19:13:17 -0700622 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100624config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100625 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100626 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100627 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900628 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900629 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100630 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800631 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800632 select HAVE_ARM_TWD if SMP
Dave Martin3b556582011-12-07 15:38:04 +0000633 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000634 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000635 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700636 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200637 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100638 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900639 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100640 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000641 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100642 Support for Renesas ARM SoC platforms using a non-multiplatform
643 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
644 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000645
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646config ARCH_RPC
647 bool "RiscPC"
648 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100649 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100650 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000651 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100652 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100653 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200654 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100655 select HAVE_PATA_PLATFORM
656 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600657 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400658 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700659 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100660 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 help
662 On the Acorn Risc-PC, Linux can support the internal IDE disk and
663 CD-ROM interface, serial and parallel port, and the floppy drive.
664
665config ARCH_SA1100
666 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100667 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700668 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100669 select ARCH_SPARSEMEM_ENABLE
670 select CLKDEV_LOOKUP
671 select CLKSRC_MMIO
672 select CPU_FREQ
673 select CPU_SA1100
674 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200675 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100676 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100677 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100678 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400679 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100680 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000681 help
682 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900684config ARCH_S3C24XX
685 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900686 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100687 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100688 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200689 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800690 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900691 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900692 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900693 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100694 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900695 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600696 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900697 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900699 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
700 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
701 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
702 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900703
Ben Dooksa08ab632008-10-21 14:06:39 +0100704config ARCH_S3C64XX
705 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900706 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200707 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100708 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100709 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100710 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200711 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900712 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900713 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800714 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900715 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900716 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900717 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100718 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700719 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100720 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100721 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100722 select S3C_DEV_NAND
723 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900724 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900725 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900726 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100727 help
728 Samsung S3C64XX series based systems
729
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100730config ARCH_DAVINCI
731 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100732 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700733 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100734 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700735 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100736 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100737 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100738 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500739 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530740 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100741 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100742 help
743 Support for TI's DaVinci platform.
744
Tony Lindgrena0694862013-01-11 11:24:20 -0800745config ARCH_OMAP1
746 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600747 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100748 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800749 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100750 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200751 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100752 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100753 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800754 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800755 select HAVE_IDE
756 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700757 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800758 select NEED_MACH_IO_H if PCCARD
759 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700760 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100761 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800762 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800763
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764endchoice
765
Rob Herring387798b2012-09-06 13:41:12 -0500766menu "Multiple platform selection"
767 depends on ARCH_MULTIPLATFORM
768
769comment "CPU Core family selection"
770
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100771config ARCH_MULTI_V4
772 bool "ARMv4 based platforms (FA526)"
773 depends on !ARCH_MULTI_V6_V7
774 select ARCH_MULTI_V4_V5
775 select CPU_FA526
776
Rob Herring387798b2012-09-06 13:41:12 -0500777config ARCH_MULTI_V4T
778 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500779 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100780 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200781 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
782 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
783 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500784
785config ARCH_MULTI_V5
786 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500787 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100788 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100789 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200790 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
791 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500792
793config ARCH_MULTI_V4_V5
794 bool
795
796config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800797 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500798 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600799 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500800
801config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800802 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500803 default y
804 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100805 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600806 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500807
808config ARCH_MULTI_V6_V7
809 bool
Rob Herring9352b052014-01-31 15:36:10 -0600810 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500811
812config ARCH_MULTI_CPU_AUTO
813 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
814 select ARCH_MULTI_V5
815
816endmenu
817
Rob Herring05e2a3d2013-12-05 10:04:54 -0600818config ARCH_VIRT
819 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600820 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600821 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600822 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600823 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600824
Russell Kingccf50e22010-03-15 19:03:06 +0000825#
826# This is sorted alphabetically by mach-* pathname. However, plat-*
827# Kconfigs may be included either alphabetically (according to the
828# plat- suffix) or along side the corresponding mach-* source.
829#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200830source "arch/arm/mach-mvebu/Kconfig"
831
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200832source "arch/arm/mach-alpine/Kconfig"
833
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100834source "arch/arm/mach-asm9260/Kconfig"
835
Russell King95b8f202010-01-14 11:43:54 +0000836source "arch/arm/mach-at91/Kconfig"
837
Anders Berg1d22924e2014-05-23 11:08:35 +0200838source "arch/arm/mach-axxia/Kconfig"
839
Christian Daudt8ac49e02012-11-19 09:46:10 -0800840source "arch/arm/mach-bcm/Kconfig"
841
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200842source "arch/arm/mach-berlin/Kconfig"
843
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844source "arch/arm/mach-clps711x/Kconfig"
845
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300846source "arch/arm/mach-cns3xxx/Kconfig"
847
Russell King95b8f202010-01-14 11:43:54 +0000848source "arch/arm/mach-davinci/Kconfig"
849
Baruch Siachdf8d7422015-01-14 10:40:30 +0200850source "arch/arm/mach-digicolor/Kconfig"
851
Russell King95b8f202010-01-14 11:43:54 +0000852source "arch/arm/mach-dove/Kconfig"
853
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000854source "arch/arm/mach-ep93xx/Kconfig"
855
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856source "arch/arm/mach-footbridge/Kconfig"
857
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200858source "arch/arm/mach-gemini/Kconfig"
859
Rob Herring387798b2012-09-06 13:41:12 -0500860source "arch/arm/mach-highbank/Kconfig"
861
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800862source "arch/arm/mach-hisi/Kconfig"
863
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864source "arch/arm/mach-integrator/Kconfig"
865
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100866source "arch/arm/mach-iop32x/Kconfig"
867
868source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869
Dan Williams285f5fa2006-12-07 02:59:39 +0100870source "arch/arm/mach-iop13xx/Kconfig"
871
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872source "arch/arm/mach-ixp4xx/Kconfig"
873
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400874source "arch/arm/mach-keystone/Kconfig"
875
Russell King95b8f202010-01-14 11:43:54 +0000876source "arch/arm/mach-ks8695/Kconfig"
877
Carlo Caione3b8f5032014-09-10 22:16:59 +0200878source "arch/arm/mach-meson/Kconfig"
879
Jonas Jensen17723fd32013-12-18 13:58:45 +0100880source "arch/arm/mach-moxart/Kconfig"
881
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200882source "arch/arm/mach-mv78xx0/Kconfig"
883
Shawn Guo3995eb82012-09-13 19:48:07 +0800884source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885
Matthias Bruggerf682a212014-05-13 01:06:13 +0200886source "arch/arm/mach-mediatek/Kconfig"
887
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800888source "arch/arm/mach-mxs/Kconfig"
889
Russell King95b8f202010-01-14 11:43:54 +0000890source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800891
Russell King95b8f202010-01-14 11:43:54 +0000892source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000893
Daniel Tang9851ca52013-06-11 18:40:17 +1000894source "arch/arm/mach-nspire/Kconfig"
895
Tony Lindgrend48af152005-07-10 19:58:17 +0100896source "arch/arm/plat-omap/Kconfig"
897
898source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
Tony Lindgren1dbae812005-11-10 14:26:51 +0000900source "arch/arm/mach-omap2/Kconfig"
901
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400902source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400903
Rob Herring387798b2012-09-06 13:41:12 -0500904source "arch/arm/mach-picoxcell/Kconfig"
905
Russell King95b8f202010-01-14 11:43:54 +0000906source "arch/arm/mach-pxa/Kconfig"
907source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Russell King95b8f202010-01-14 11:43:54 +0000909source "arch/arm/mach-mmp/Kconfig"
910
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600911source "arch/arm/mach-qcom/Kconfig"
912
Russell King95b8f202010-01-14 11:43:54 +0000913source "arch/arm/mach-realview/Kconfig"
914
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200915source "arch/arm/mach-rockchip/Kconfig"
916
Russell King95b8f202010-01-14 11:43:54 +0000917source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300918
Rob Herring387798b2012-09-06 13:41:12 -0500919source "arch/arm/mach-socfpga/Kconfig"
920
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100921source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100922
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100923source "arch/arm/mach-sti/Kconfig"
924
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900925source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926
Ben Dooks431107e2010-01-26 10:11:04 +0900927source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100928
Kukjin Kim170f4e42010-02-24 16:40:44 +0900929source "arch/arm/mach-s5pv210/Kconfig"
930
Kukjin Kim83014572011-11-06 13:54:56 +0900931source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500932source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900933
Russell King882d01f2010-03-02 23:40:15 +0000934source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935
Maxime Ripard3b526342012-11-08 12:40:16 +0100936source "arch/arm/mach-sunxi/Kconfig"
937
Barry Song156a0992012-08-23 13:41:58 +0800938source "arch/arm/mach-prima2/Kconfig"
939
Erik Gillingc5f80062010-01-21 16:53:02 -0800940source "arch/arm/mach-tegra/Kconfig"
941
Russell King95b8f202010-01-14 11:43:54 +0000942source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900944source "arch/arm/mach-uniphier/Kconfig"
945
Russell King95b8f202010-01-14 11:43:54 +0000946source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947
948source "arch/arm/mach-versatile/Kconfig"
949
Russell Kingceade892010-02-11 21:44:53 +0000950source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000951source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000952
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300953source "arch/arm/mach-vt8500/Kconfig"
954
wanzongshun7ec80dd2008-12-03 03:55:38 +0100955source "arch/arm/mach-w90x900/Kconfig"
956
Jun Nieacede512015-04-28 17:18:05 +0800957source "arch/arm/mach-zx/Kconfig"
958
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600959source "arch/arm/mach-zynq/Kconfig"
960
Stefan Agner499f1642015-05-21 00:35:44 +0200961# ARMv7-M architecture
962config ARCH_EFM32
963 bool "Energy Micro efm32"
964 depends on ARM_SINGLE_ARMV7M
965 select ARCH_REQUIRE_GPIOLIB
966 help
967 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
968 processors.
969
970config ARCH_LPC18XX
971 bool "NXP LPC18xx/LPC43xx"
972 depends on ARM_SINGLE_ARMV7M
973 select ARCH_HAS_RESET_CONTROLLER
974 select ARM_AMBA
975 select CLKSRC_LPC32XX
976 select PINCTRL
977 help
978 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
979 high performance microcontrollers.
980
981config ARCH_STM32
982 bool "STMicrolectronics STM32"
983 depends on ARM_SINGLE_ARMV7M
984 select ARCH_HAS_RESET_CONTROLLER
985 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200986 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200987 select RESET_CONTROLLER
988 help
989 Support for STMicroelectronics STM32 processors.
990
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991# Definitions to make life easier
992config ARCH_ACORN
993 bool
994
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100995config PLAT_IOP
996 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700997 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100998
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400999config PLAT_ORION
1000 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001001 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +01001002 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001003 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +02001004 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001005
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001006config PLAT_ORION_LEGACY
1007 bool
1008 select PLAT_ORION
1009
Eric Miaobd5ce432009-01-20 12:06:01 +08001010config PLAT_PXA
1011 bool
1012
Russell Kingf4b8b312010-01-14 12:48:06 +00001013config PLAT_VERSATILE
1014 bool
1015
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001016source "arch/arm/firmware/Kconfig"
1017
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018source arch/arm/mm/Kconfig
1019
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001020config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001021 bool "Enable iWMMXt support"
1022 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1023 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001024 help
1025 Enable support for iWMMXt context switching at run time if
1026 running on a CPU that supports it.
1027
eric miao52108642010-12-13 09:42:34 +01001028config MULTI_IRQ_HANDLER
1029 bool
1030 help
1031 Allow each machine to specify it's own IRQ handler at run time.
1032
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001033if !MMU
1034source "arch/arm/Kconfig-nommu"
1035endif
1036
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001037config PJ4B_ERRATA_4742
1038 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1039 depends on CPU_PJ4B && MACH_ARMADA_370
1040 default y
1041 help
1042 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1043 Event (WFE) IDLE states, a specific timing sensitivity exists between
1044 the retiring WFI/WFE instructions and the newly issued subsequent
1045 instructions. This sensitivity can result in a CPU hang scenario.
1046 Workaround:
1047 The software must insert either a Data Synchronization Barrier (DSB)
1048 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1049 instruction
1050
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001051config ARM_ERRATA_326103
1052 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1053 depends on CPU_V6
1054 help
1055 Executing a SWP instruction to read-only memory does not set bit 11
1056 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1057 treat the access as a read, preventing a COW from occurring and
1058 causing the faulting task to livelock.
1059
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001060config ARM_ERRATA_411920
1061 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001062 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001063 help
1064 Invalidation of the Instruction Cache operation can
1065 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1066 It does not affect the MPCore. This option enables the ARM Ltd.
1067 recommended workaround.
1068
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001069config ARM_ERRATA_430973
1070 bool "ARM errata: Stale prediction on replaced interworking branch"
1071 depends on CPU_V7
1072 help
1073 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001074 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001075 interworking branch is replaced with another code sequence at the
1076 same virtual address, whether due to self-modifying code or virtual
1077 to physical address re-mapping, Cortex-A8 does not recover from the
1078 stale interworking branch prediction. This results in Cortex-A8
1079 executing the new code sequence in the incorrect ARM or Thumb state.
1080 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1081 and also flushes the branch target cache at every context switch.
1082 Note that setting specific bits in the ACTLR register may not be
1083 available in non-secure mode.
1084
Catalin Marinas855c5512009-04-30 17:06:15 +01001085config ARM_ERRATA_458693
1086 bool "ARM errata: Processor deadlock when a false hazard is created"
1087 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001088 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001089 help
1090 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1091 erratum. For very specific sequences of memory operations, it is
1092 possible for a hazard condition intended for a cache line to instead
1093 be incorrectly associated with a different cache line. This false
1094 hazard might then cause a processor deadlock. The workaround enables
1095 the L1 caching of the NEON accesses and disables the PLD instruction
1096 in the ACTLR register. Note that setting specific bits in the ACTLR
1097 register may not be available in non-secure mode.
1098
Catalin Marinas0516e462009-04-30 17:06:20 +01001099config ARM_ERRATA_460075
1100 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1101 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001102 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001103 help
1104 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1105 erratum. Any asynchronous access to the L2 cache may encounter a
1106 situation in which recent store transactions to the L2 cache are lost
1107 and overwritten with stale memory contents from external memory. The
1108 workaround disables the write-allocate mode for the L2 cache via the
1109 ACTLR register. Note that setting specific bits in the ACTLR register
1110 may not be available in non-secure mode.
1111
Will Deacon9f050272010-09-14 09:51:43 +01001112config ARM_ERRATA_742230
1113 bool "ARM errata: DMB operation may be faulty"
1114 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001115 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001116 help
1117 This option enables the workaround for the 742230 Cortex-A9
1118 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1119 between two write operations may not ensure the correct visibility
1120 ordering of the two writes. This workaround sets a specific bit in
1121 the diagnostic register of the Cortex-A9 which causes the DMB
1122 instruction to behave as a DSB, ensuring the correct behaviour of
1123 the two writes.
1124
Will Deacona672e992010-09-14 09:53:02 +01001125config ARM_ERRATA_742231
1126 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1127 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001128 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001129 help
1130 This option enables the workaround for the 742231 Cortex-A9
1131 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1132 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1133 accessing some data located in the same cache line, may get corrupted
1134 data due to bad handling of the address hazard when the line gets
1135 replaced from one of the CPUs at the same time as another CPU is
1136 accessing it. This workaround sets specific bits in the diagnostic
1137 register of the Cortex-A9 which reduces the linefill issuing
1138 capabilities of the processor.
1139
Jon Medhurst69155792013-06-07 10:35:35 +01001140config ARM_ERRATA_643719
1141 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1142 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001143 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001144 help
1145 This option enables the workaround for the 643719 Cortex-A9 (prior to
1146 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1147 register returns zero when it should return one. The workaround
1148 corrects this value, ensuring cache maintenance operations which use
1149 it behave as intended and avoiding data corruption.
1150
Will Deaconcdf357f2010-08-05 11:20:51 +01001151config ARM_ERRATA_720789
1152 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001153 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001154 help
1155 This option enables the workaround for the 720789 Cortex-A9 (prior to
1156 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1157 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1158 As a consequence of this erratum, some TLB entries which should be
1159 invalidated are not, resulting in an incoherency in the system page
1160 tables. The workaround changes the TLB flushing routines to invalidate
1161 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001162
1163config ARM_ERRATA_743622
1164 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1165 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001166 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001167 help
1168 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001169 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001170 optimisation in the Cortex-A9 Store Buffer may lead to data
1171 corruption. This workaround sets a specific bit in the diagnostic
1172 register of the Cortex-A9 which disables the Store Buffer
1173 optimisation, preventing the defect from occurring. This has no
1174 visible impact on the overall performance or power consumption of the
1175 processor.
1176
Will Deacon9a27c272011-02-18 16:36:35 +01001177config ARM_ERRATA_751472
1178 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001179 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001180 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001181 help
1182 This option enables the workaround for the 751472 Cortex-A9 (prior
1183 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1184 completion of a following broadcasted operation if the second
1185 operation is received by a CPU before the ICIALLUIS has completed,
1186 potentially leading to corrupted entries in the cache or TLB.
1187
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001188config ARM_ERRATA_754322
1189 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1190 depends on CPU_V7
1191 help
1192 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1193 r3p*) erratum. A speculative memory access may cause a page table walk
1194 which starts prior to an ASID switch but completes afterwards. This
1195 can populate the micro-TLB with a stale entry which may be hit with
1196 the new ASID. This workaround places two dsb instructions in the mm
1197 switching code so that no page table walks can cross the ASID switch.
1198
Will Deacon5dab26a2011-03-04 12:38:54 +01001199config ARM_ERRATA_754327
1200 bool "ARM errata: no automatic Store Buffer drain"
1201 depends on CPU_V7 && SMP
1202 help
1203 This option enables the workaround for the 754327 Cortex-A9 (prior to
1204 r2p0) erratum. The Store Buffer does not have any automatic draining
1205 mechanism and therefore a livelock may occur if an external agent
1206 continuously polls a memory location waiting to observe an update.
1207 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1208 written polling loops from denying visibility of updates to memory.
1209
Catalin Marinas145e10e2011-08-15 11:04:41 +01001210config ARM_ERRATA_364296
1211 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001212 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001213 help
1214 This options enables the workaround for the 364296 ARM1136
1215 r0p2 erratum (possible cache data corruption with
1216 hit-under-miss enabled). It sets the undocumented bit 31 in
1217 the auxiliary control register and the FI bit in the control
1218 register, thus disabling hit-under-miss without putting the
1219 processor into full low interrupt latency mode. ARM11MPCore
1220 is not affected.
1221
Will Deaconf630c1b2011-09-15 11:45:15 +01001222config ARM_ERRATA_764369
1223 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1224 depends on CPU_V7 && SMP
1225 help
1226 This option enables the workaround for erratum 764369
1227 affecting Cortex-A9 MPCore with two or more processors (all
1228 current revisions). Under certain timing circumstances, a data
1229 cache line maintenance operation by MVA targeting an Inner
1230 Shareable memory region may fail to proceed up to either the
1231 Point of Coherency or to the Point of Unification of the
1232 system. This workaround adds a DSB instruction before the
1233 relevant cache maintenance functions and sets a specific bit
1234 in the diagnostic control register of the SCU.
1235
Simon Horman7253b852012-09-28 02:12:45 +01001236config ARM_ERRATA_775420
1237 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1238 depends on CPU_V7
1239 help
1240 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1241 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1242 operation aborts with MMU exception, it might cause the processor
1243 to deadlock. This workaround puts DSB before executing ISB if
1244 an abort may occur on cache maintenance.
1245
Catalin Marinas93dc6882013-03-26 23:35:04 +01001246config ARM_ERRATA_798181
1247 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1248 depends on CPU_V7 && SMP
1249 help
1250 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1251 adequately shooting down all use of the old entries. This
1252 option enables the Linux kernel workaround for this erratum
1253 which sends an IPI to the CPUs that are running the same ASID
1254 as the one being invalidated.
1255
Will Deacon84b65042013-08-20 17:29:55 +01001256config ARM_ERRATA_773022
1257 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1258 depends on CPU_V7
1259 help
1260 This option enables the workaround for the 773022 Cortex-A15
1261 (up to r0p4) erratum. In certain rare sequences of code, the
1262 loop buffer may deliver incorrect instructions. This
1263 workaround disables the loop buffer to avoid the erratum.
1264
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265endmenu
1266
1267source "arch/arm/common/Kconfig"
1268
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269menu "Bus support"
1270
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271config ISA
1272 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 help
1274 Find out whether you have ISA slots on your motherboard. ISA is the
1275 name of a bus system, i.e. the way the CPU talks to the other stuff
1276 inside your box. Other bus systems are PCI, EISA, MicroChannel
1277 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1278 newer boards don't support it. If you have ISA, say Y, otherwise N.
1279
Russell King065909b2006-01-04 15:44:16 +00001280# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281config ISA_DMA
1282 bool
Russell King065909b2006-01-04 15:44:16 +00001283 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284
Russell King065909b2006-01-04 15:44:16 +00001285# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001286config ISA_DMA_API
1287 bool
Al Viro5cae8412005-05-04 05:39:22 +01001288
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001290 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291 help
1292 Find out whether you have a PCI motherboard. PCI is the name of a
1293 bus system, i.e. the way the CPU talks to the other stuff inside
1294 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1295 VESA. If you have PCI, say Y, otherwise N.
1296
Anton Vorontsov52882172010-04-19 13:20:49 +01001297config PCI_DOMAINS
1298 bool
1299 depends on PCI
1300
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001301config PCI_DOMAINS_GENERIC
1302 def_bool PCI_DOMAINS
1303
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001304config PCI_NANOENGINE
1305 bool "BSE nanoEngine PCI support"
1306 depends on SA1100_NANOENGINE
1307 help
1308 Enable PCI on the BSE nanoEngine board.
1309
Matthew Wilcox36e23592007-07-10 10:54:40 -06001310config PCI_SYSCALL
1311 def_bool PCI
1312
Mike Rapoporta0113a92007-11-25 08:55:34 +01001313config PCI_HOST_ITE8152
1314 bool
1315 depends on PCI && MACH_ARMCORE
1316 default y
1317 select DMABOUNCE
1318
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001320source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321
1322source "drivers/pcmcia/Kconfig"
1323
1324endmenu
1325
1326menu "Kernel Features"
1327
Dave Martin3b556582011-12-07 15:38:04 +00001328config HAVE_SMP
1329 bool
1330 help
1331 This option should be selected by machines which have an SMP-
1332 capable CPU.
1333
1334 The only effect of this option is to make the SMP-related
1335 options available to the user for configuration.
1336
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001338 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001339 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001340 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001341 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001342 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001343 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 help
1345 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001346 a system with only one CPU, say N. If you have a system with more
1347 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348
Robert Graffham4a474152014-01-23 15:55:29 -08001349 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001351 you say Y here, the kernel will run on many, but not all,
1352 uniprocessor machines. On a uniprocessor machine, the kernel
1353 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354
Paul Bolle395cf962011-08-15 02:02:26 +02001355 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001357 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358
1359 If you don't know what to do here, say N.
1360
Russell Kingf00ec482010-09-04 10:47:48 +01001361config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001362 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001363 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001364 default y
1365 help
1366 SMP kernels contain instructions which fail on non-SMP processors.
1367 Enabling this option allows the kernel to modify itself to make
1368 these instructions safe. Disabling it allows about 1K of space
1369 savings.
1370
1371 If you don't know what to do here, say Y.
1372
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001373config ARM_CPU_TOPOLOGY
1374 bool "Support cpu topology definition"
1375 depends on SMP && CPU_V7
1376 default y
1377 help
1378 Support ARM cpu topology definition. The MPIDR register defines
1379 affinity between processors which is then used to describe the cpu
1380 topology of an ARM System.
1381
1382config SCHED_MC
1383 bool "Multi-core scheduler support"
1384 depends on ARM_CPU_TOPOLOGY
1385 help
1386 Multi-core scheduler support improves the CPU scheduler's decision
1387 making when dealing with multi-core CPU chips at a cost of slightly
1388 increased overhead in some places. If unsure say N here.
1389
1390config SCHED_SMT
1391 bool "SMT scheduler support"
1392 depends on ARM_CPU_TOPOLOGY
1393 help
1394 Improves the CPU scheduler's decision making when dealing with
1395 MultiThreading at a cost of slightly increased overhead in some
1396 places. If unsure say N here.
1397
Russell Kinga8cbcd92009-05-16 11:51:14 +01001398config HAVE_ARM_SCU
1399 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001400 help
1401 This option enables support for the ARM system coherency unit
1402
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001403config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001404 bool "Architected timer support"
1405 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001406 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001407 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001408 help
1409 This option enables support for the ARM architected timer
1410
Russell Kingf32f4ce2009-05-16 12:14:21 +01001411config HAVE_ARM_TWD
1412 bool
1413 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001414 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001415 help
1416 This options enables support for the ARM timer and watchdog unit
1417
Nicolas Pitree8db2882012-04-12 02:45:22 -04001418config MCPM
1419 bool "Multi-Cluster Power Management"
1420 depends on CPU_V7 && SMP
1421 help
1422 This option provides the common power management infrastructure
1423 for (multi-)cluster based systems, such as big.LITTLE based
1424 systems.
1425
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001426config MCPM_QUAD_CLUSTER
1427 bool
1428 depends on MCPM
1429 help
1430 To avoid wasting resources unnecessarily, MCPM only supports up
1431 to 2 clusters by default.
1432 Platforms with 3 or 4 clusters that use MCPM must select this
1433 option to allow the additional clusters to be managed.
1434
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001435config BIG_LITTLE
1436 bool "big.LITTLE support (Experimental)"
1437 depends on CPU_V7 && SMP
1438 select MCPM
1439 help
1440 This option enables support selections for the big.LITTLE
1441 system architecture.
1442
1443config BL_SWITCHER
1444 bool "big.LITTLE switcher support"
1445 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001446 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001447 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001448 help
1449 The big.LITTLE "switcher" provides the core functionality to
1450 transparently handle transition between a cluster of A15's
1451 and a cluster of A7's in a big.LITTLE system.
1452
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001453config BL_SWITCHER_DUMMY_IF
1454 tristate "Simple big.LITTLE switcher user interface"
1455 depends on BL_SWITCHER && DEBUG_KERNEL
1456 help
1457 This is a simple and dummy char dev interface to control
1458 the big.LITTLE switcher core code. It is meant for
1459 debugging purposes only.
1460
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001461choice
1462 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001463 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001464 default VMSPLIT_3G
1465 help
1466 Select the desired split between kernel and user memory.
1467
1468 If you are not absolutely sure what you are doing, leave this
1469 option alone!
1470
1471 config VMSPLIT_3G
1472 bool "3G/1G user/kernel split"
1473 config VMSPLIT_2G
1474 bool "2G/2G user/kernel split"
1475 config VMSPLIT_1G
1476 bool "1G/3G user/kernel split"
1477endchoice
1478
1479config PAGE_OFFSET
1480 hex
Russell King006fa252014-02-26 19:40:46 +00001481 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001482 default 0x40000000 if VMSPLIT_1G
1483 default 0x80000000 if VMSPLIT_2G
1484 default 0xC0000000
1485
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486config NR_CPUS
1487 int "Maximum number of CPUs (2-32)"
1488 range 2 32
1489 depends on SMP
1490 default "4"
1491
Russell Kinga054a812005-11-02 22:24:33 +00001492config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001493 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001494 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001495 help
1496 Say Y here to experiment with turning CPUs off and on. CPUs
1497 can be controlled through /sys/devices/system/cpu.
1498
Will Deacon2bdd4242012-12-12 19:20:52 +00001499config ARM_PSCI
1500 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1501 depends on CPU_V7
1502 help
1503 Say Y here if you want Linux to communicate with system firmware
1504 implementing the PSCI specification for CPU-centric power
1505 management operations described in ARM document number ARM DEN
1506 0022A ("Power State Coordination Interface System Software on
1507 ARM processors").
1508
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001509# The GPIO number here must be sorted by descending number. In case of
1510# a multiplatform kernel, we just want the highest value required by the
1511# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001512config ARCH_NR_GPIO
1513 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001514 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1515 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001516 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1517 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001518 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001519 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001520 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001521 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001522 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001523 default 0
1524 help
1525 Maximum number of GPIOs in the system.
1526
1527 If unsure, leave the default value.
1528
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001529source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530
Russell Kingc9218b12013-04-27 23:31:10 +01001531config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001532 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001533 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001534 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001535 default 128 if SOC_AT91RM9200
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001536 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001537 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001538
1539choice
Russell King47d84682013-09-10 23:47:55 +01001540 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001541 prompt "Timer frequency"
1542
1543config HZ_100
1544 bool "100 Hz"
1545
1546config HZ_200
1547 bool "200 Hz"
1548
1549config HZ_250
1550 bool "250 Hz"
1551
1552config HZ_300
1553 bool "300 Hz"
1554
1555config HZ_500
1556 bool "500 Hz"
1557
1558config HZ_1000
1559 bool "1000 Hz"
1560
1561endchoice
1562
1563config HZ
1564 int
Russell King47d84682013-09-10 23:47:55 +01001565 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001566 default 100 if HZ_100
1567 default 200 if HZ_200
1568 default 250 if HZ_250
1569 default 300 if HZ_300
1570 default 500 if HZ_500
1571 default 1000
1572
1573config SCHED_HRTICK
1574 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001575
Catalin Marinas16c79652009-07-24 12:33:02 +01001576config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001577 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001578 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001579 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001580 select AEABI
1581 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001582 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001583 help
1584 By enabling this option, the kernel will be compiled in
1585 Thumb-2 mode. A compiler/assembler that understand the unified
1586 ARM-Thumb syntax is needed.
1587
1588 If unsure, say N.
1589
Dave Martin6f685c52011-03-03 11:41:12 +01001590config THUMB2_AVOID_R_ARM_THM_JUMP11
1591 bool "Work around buggy Thumb-2 short branch relocations in gas"
1592 depends on THUMB2_KERNEL && MODULES
1593 default y
1594 help
1595 Various binutils versions can resolve Thumb-2 branches to
1596 locally-defined, preemptible global symbols as short-range "b.n"
1597 branch instructions.
1598
1599 This is a problem, because there's no guarantee the final
1600 destination of the symbol, or any candidate locations for a
1601 trampoline, are within range of the branch. For this reason, the
1602 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1603 relocation in modules at all, and it makes little sense to add
1604 support.
1605
1606 The symptom is that the kernel fails with an "unsupported
1607 relocation" error when loading some modules.
1608
1609 Until fixed tools are available, passing
1610 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1611 code which hits this problem, at the cost of a bit of extra runtime
1612 stack usage in some cases.
1613
1614 The problem is described in more detail at:
1615 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1616
1617 Only Thumb-2 kernels are affected.
1618
1619 Unless you are sure your tools don't have this problem, say Y.
1620
Catalin Marinas0becb082009-07-24 12:32:53 +01001621config ARM_ASM_UNIFIED
1622 bool
1623
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001624config AEABI
1625 bool "Use the ARM EABI to compile the kernel"
1626 help
1627 This option allows for the kernel to be compiled using the latest
1628 ARM ABI (aka EABI). This is only useful if you are using a user
1629 space environment that is also compiled with EABI.
1630
1631 Since there are major incompatibilities between the legacy ABI and
1632 EABI, especially with regard to structure member alignment, this
1633 option also changes the kernel syscall calling convention to
1634 disambiguate both ABIs and allow for backward compatibility support
1635 (selected with CONFIG_OABI_COMPAT).
1636
1637 To use this you need GCC version 4.0.0 or later.
1638
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001639config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001640 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001641 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001642 help
1643 This option preserves the old syscall interface along with the
1644 new (ARM EABI) one. It also provides a compatibility layer to
1645 intercept syscalls that have structure arguments which layout
1646 in memory differs between the legacy ABI and the new ARM EABI
1647 (only for non "thumb" binaries). This option adds a tiny
1648 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001649
1650 The seccomp filter system will not be available when this is
1651 selected, since there is no way yet to sensibly distinguish
1652 between calling conventions during filtering.
1653
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001654 If you know you'll be using only pure EABI user space then you
1655 can say N here. If this option is not selected and you attempt
1656 to execute a legacy ABI binary then the result will be
1657 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001658 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001659
Mel Gormaneb335752009-05-13 17:34:48 +01001660config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001661 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001662
Russell King05944d72006-11-30 20:43:51 +00001663config ARCH_SPARSEMEM_ENABLE
1664 bool
1665
Russell King07a2f732008-10-01 21:39:58 +01001666config ARCH_SPARSEMEM_DEFAULT
1667 def_bool ARCH_SPARSEMEM_ENABLE
1668
Russell King05944d72006-11-30 20:43:51 +00001669config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001670 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001671
Will Deacon7b7bf492011-05-19 13:21:14 +01001672config HAVE_ARCH_PFN_VALID
1673 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1674
Steve Capperb8cd51a2014-10-09 15:29:20 -07001675config HAVE_GENERIC_RCU_GUP
1676 def_bool y
1677 depends on ARM_LPAE
1678
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001679config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001680 bool "High Memory Support"
1681 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001682 help
1683 The address space of ARM processors is only 4 Gigabytes large
1684 and it has to accommodate user address space, kernel address
1685 space as well as some memory mapped IO. That means that, if you
1686 have a large amount of physical memory and/or IO, not all of the
1687 memory can be "permanently mapped" by the kernel. The physical
1688 memory that is not permanently mapped is called "high memory".
1689
1690 Depending on the selected kernel/user memory split, minimum
1691 vmalloc space and actual amount of RAM, you may not need this
1692 option which should result in a slightly faster kernel.
1693
1694 If unsure, say n.
1695
Russell King65cec8e2009-08-17 20:02:06 +01001696config HIGHPTE
1697 bool "Allocate 2nd-level pagetables from highmem"
1698 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001699
Jamie Iles1b8873a2010-02-02 20:25:44 +01001700config HW_PERF_EVENTS
1701 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001702 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001703 default y
1704 help
1705 Enable hardware performance counter support for perf events. If
1706 disabled, perf events will use software events only.
1707
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001708config SYS_SUPPORTS_HUGETLBFS
1709 def_bool y
1710 depends on ARM_LPAE
1711
Catalin Marinas8d962502012-07-25 14:39:26 +01001712config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1713 def_bool y
1714 depends on ARM_LPAE
1715
Steven Capper4bfab202013-07-26 14:58:22 +01001716config ARCH_WANT_GENERAL_HUGETLB
1717 def_bool y
1718
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001719config ARM_MODULE_PLTS
1720 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1721 depends on MODULES
1722 help
1723 Allocate PLTs when loading modules so that jumps and calls whose
1724 targets are too far away for their relative offsets to be encoded
1725 in the instructions themselves can be bounced via veneers in the
1726 module's PLT. This allows modules to be allocated in the generic
1727 vmalloc area after the dedicated module memory area has been
1728 exhausted. The modules will use slightly more memory, but after
1729 rounding up to page size, the actual memory footprint is usually
1730 the same.
1731
1732 Say y if you are getting out of memory errors while loading modules
1733
Dave Hansen3f22ab22005-06-23 00:07:43 -07001734source "mm/Kconfig"
1735
Magnus Dammc1b2d972010-07-05 10:00:11 +01001736config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001737 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1738 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001739 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001740 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001741 default "11"
1742 help
1743 The kernel memory allocator divides physically contiguous memory
1744 blocks into "zones", where each zone is a power of two number of
1745 pages. This option selects the largest power of two that the kernel
1746 keeps in the memory allocator. If you need to allocate very large
1747 blocks of physically contiguous memory, then you may need to
1748 increase this value.
1749
1750 This config option is actually maximum order plus one. For example,
1751 a value of 11 means that the largest free memory block is 2^10 pages.
1752
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753config ALIGNMENT_TRAP
1754 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001755 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001757 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001759 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1761 address divisible by 4. On 32-bit ARM processors, these non-aligned
1762 fetch/store instructions will be emulated in software if you say
1763 here, which has a severe performance impact. This is necessary for
1764 correct operation of some network protocols. With an IP-only
1765 configuration it is safe to say N, otherwise say Y.
1766
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001767config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001768 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1769 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001770 default y if CPU_FEROCEON
1771 help
1772 Implement faster copy_to_user and clear_user methods for CPU
1773 cores where a 8-word STM instruction give significantly higher
1774 memory write throughput than a sequence of individual 32bit stores.
1775
1776 A possible side effect is a slight increase in scheduling latency
1777 between threads sharing the same address space if they invoke
1778 such copy operations with large buffers.
1779
1780 However, if the CPU data cache is using a write-allocate mode,
1781 this option is unlikely to provide any performance gain.
1782
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001783config SECCOMP
1784 bool
1785 prompt "Enable seccomp to safely compute untrusted bytecode"
1786 ---help---
1787 This kernel feature is useful for number crunching applications
1788 that may need to compute untrusted bytecode during their
1789 execution. By using pipes or other transports made available to
1790 the process as file descriptors supporting the read/write
1791 syscalls, it's possible to isolate those applications in
1792 their own address space using seccomp. Once seccomp is
1793 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1794 and the task is only allowed to execute a few safe syscalls
1795 defined by each seccomp mode.
1796
Stefano Stabellini06e62952013-10-15 15:47:14 +00001797config SWIOTLB
1798 def_bool y
1799
1800config IOMMU_HELPER
1801 def_bool SWIOTLB
1802
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001803config XEN_DOM0
1804 def_bool y
1805 depends on XEN
1806
1807config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001808 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001809 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001810 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001811 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001812 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001813 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001814 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001815 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001816 help
1817 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1818
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819endmenu
1820
1821menu "Boot options"
1822
Grant Likely9eb8f672011-04-28 14:27:20 -06001823config USE_OF
1824 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001825 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001826 select OF
1827 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001828 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001829 help
1830 Include support for flattened device tree machine descriptions.
1831
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001832config ATAGS
1833 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1834 default y
1835 help
1836 This is the traditional way of passing data to the kernel at boot
1837 time. If you are solely relying on the flattened device tree (or
1838 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1839 to remove ATAGS support from your kernel binary. If unsure,
1840 leave this to y.
1841
1842config DEPRECATED_PARAM_STRUCT
1843 bool "Provide old way to pass kernel parameters"
1844 depends on ATAGS
1845 help
1846 This was deprecated in 2001 and announced to live on for 5 years.
1847 Some old boot loaders still use this way.
1848
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849# Compressed boot loader in ROM. Yes, we really want to ask about
1850# TEXT and BSS so we preserve their values in the config files.
1851config ZBOOT_ROM_TEXT
1852 hex "Compressed ROM boot loader base address"
1853 default "0"
1854 help
1855 The physical address at which the ROM-able zImage is to be
1856 placed in the target. Platforms which normally make use of
1857 ROM-able zImage formats normally set this to a suitable
1858 value in their defconfig file.
1859
1860 If ZBOOT_ROM is not enabled, this has no effect.
1861
1862config ZBOOT_ROM_BSS
1863 hex "Compressed ROM boot loader BSS address"
1864 default "0"
1865 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001866 The base address of an area of read/write memory in the target
1867 for the ROM-able zImage which must be available while the
1868 decompressor is running. It must be large enough to hold the
1869 entire decompressed kernel plus an additional 128 KiB.
1870 Platforms which normally make use of ROM-able zImage formats
1871 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001872
1873 If ZBOOT_ROM is not enabled, this has no effect.
1874
1875config ZBOOT_ROM
1876 bool "Compressed boot loader in ROM/flash"
1877 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001878 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 help
1880 Say Y here if you intend to execute your compressed kernel image
1881 (zImage) directly from ROM or flash. If unsure, say N.
1882
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001883config ARM_APPENDED_DTB
1884 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001885 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001886 help
1887 With this option, the boot code will look for a device tree binary
1888 (DTB) appended to zImage
1889 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1890
1891 This is meant as a backward compatibility convenience for those
1892 systems with a bootloader that can't be upgraded to accommodate
1893 the documented boot protocol using a device tree.
1894
1895 Beware that there is very little in terms of protection against
1896 this option being confused by leftover garbage in memory that might
1897 look like a DTB header after a reboot if no actual DTB is appended
1898 to zImage. Do not leave this option active in a production kernel
1899 if you don't intend to always append a DTB. Proper passing of the
1900 location into r2 of a bootloader provided DTB is always preferable
1901 to this option.
1902
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001903config ARM_ATAG_DTB_COMPAT
1904 bool "Supplement the appended DTB with traditional ATAG information"
1905 depends on ARM_APPENDED_DTB
1906 help
1907 Some old bootloaders can't be updated to a DTB capable one, yet
1908 they provide ATAGs with memory configuration, the ramdisk address,
1909 the kernel cmdline string, etc. Such information is dynamically
1910 provided by the bootloader and can't always be stored in a static
1911 DTB. To allow a device tree enabled kernel to be used with such
1912 bootloaders, this option allows zImage to extract the information
1913 from the ATAG list and store it at run time into the appended DTB.
1914
Genoud Richardd0f34a12012-06-26 16:37:59 +01001915choice
1916 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1917 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1918
1919config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1920 bool "Use bootloader kernel arguments if available"
1921 help
1922 Uses the command-line options passed by the boot loader instead of
1923 the device tree bootargs property. If the boot loader doesn't provide
1924 any, the device tree bootargs property will be used.
1925
1926config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1927 bool "Extend with bootloader kernel arguments"
1928 help
1929 The command-line arguments provided by the boot loader will be
1930 appended to the the device tree bootargs property.
1931
1932endchoice
1933
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934config CMDLINE
1935 string "Default kernel command string"
1936 default ""
1937 help
1938 On some architectures (EBSA110 and CATS), there is currently no way
1939 for the boot loader to pass arguments to the kernel. For these
1940 architectures, you should supply some command-line options at build
1941 time by entering them here. As a minimum, you should specify the
1942 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1943
Victor Boivie4394c122011-05-04 17:07:55 +01001944choice
1945 prompt "Kernel command line type" if CMDLINE != ""
1946 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001947 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001948
1949config CMDLINE_FROM_BOOTLOADER
1950 bool "Use bootloader kernel arguments if available"
1951 help
1952 Uses the command-line options passed by the boot loader. If
1953 the boot loader doesn't provide any, the default kernel command
1954 string provided in CMDLINE will be used.
1955
1956config CMDLINE_EXTEND
1957 bool "Extend bootloader kernel arguments"
1958 help
1959 The command-line arguments provided by the boot loader will be
1960 appended to the default kernel command string.
1961
Alexander Holler92d20402010-02-16 19:04:53 +01001962config CMDLINE_FORCE
1963 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001964 help
1965 Always use the default kernel command string, even if the boot
1966 loader passes other arguments to the kernel.
1967 This is useful if you cannot or don't want to change the
1968 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001969endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001970
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971config XIP_KERNEL
1972 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001973 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974 help
1975 Execute-In-Place allows the kernel to run from non-volatile storage
1976 directly addressable by the CPU, such as NOR flash. This saves RAM
1977 space since the text section of the kernel is not loaded from flash
1978 to RAM. Read-write sections, such as the data section and stack,
1979 are still copied to RAM. The XIP kernel is not compressed since
1980 it has to run directly from flash, so it will take more space to
1981 store it. The flash address used to link the kernel object files,
1982 and for storing it, is configuration dependent. Therefore, if you
1983 say Y here, you must know the proper physical address where to
1984 store the kernel image depending on your own flash memory usage.
1985
1986 Also note that the make target becomes "make xipImage" rather than
1987 "make zImage" or "make Image". The final kernel binary to put in
1988 ROM memory will be arch/arm/boot/xipImage.
1989
1990 If unsure, say N.
1991
1992config XIP_PHYS_ADDR
1993 hex "XIP Kernel Physical Location"
1994 depends on XIP_KERNEL
1995 default "0x00080000"
1996 help
1997 This is the physical address in your flash memory the kernel will
1998 be linked for and stored to. This address is dependent on your
1999 own flash usage.
2000
Richard Purdiec587e4a2007-02-06 21:29:00 +01002001config KEXEC
2002 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002003 depends on (!SMP || PM_SLEEP_SMP)
Arnd Bergmanncb1293e2015-05-26 15:40:44 +01002004 depends on !CPU_V7M
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
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044endmenu
2045
Russell Kingac9d7ef2008-08-18 17:26:00 +01002046menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049
Russell Kingac9d7ef2008-08-18 17:26:00 +01002050source "drivers/cpuidle/Kconfig"
2051
2052endmenu
2053
Linus Torvalds1da177e2005-04-16 15:20:36 -07002054menu "Floating point emulation"
2055
2056comment "At least one emulation must be selected"
2057
2058config FPE_NWFPE
2059 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002060 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061 ---help---
2062 Say Y to include the NWFPE floating point emulator in the kernel.
2063 This is necessary to run most binaries. Linux does not currently
2064 support floating point hardware so you need to say Y here even if
2065 your machine has an FPA or floating point co-processor podule.
2066
2067 You may say N here if you are going to load the Acorn FPEmulator
2068 early in the bootup.
2069
2070config FPE_NWFPE_XP
2071 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002072 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073 help
2074 Say Y to include 80-bit support in the kernel floating-point
2075 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2076 Note that gcc does not generate 80-bit operations by default,
2077 so in most cases this option only enlarges the size of the
2078 floating point emulator without any good reason.
2079
2080 You almost surely want to say N here.
2081
2082config FPE_FASTFPE
2083 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002084 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085 ---help---
2086 Say Y here to include the FAST floating point emulator in the kernel.
2087 This is an experimental much faster emulator which now also has full
2088 precision for the mantissa. It does not support any exceptions.
2089 It is very simple, and approximately 3-6 times faster than NWFPE.
2090
2091 It should be sufficient for most programs. It may be not suitable
2092 for scientific calculations, but you have to check this for yourself.
2093 If you do not feel you need a faster FP emulation you should better
2094 choose NWFPE.
2095
2096config VFP
2097 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002098 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099 help
2100 Say Y to include VFP support code in the kernel. This is needed
2101 if your hardware includes a VFP unit.
2102
2103 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2104 release notes and additional status information.
2105
2106 Say N if your target does not have VFP hardware.
2107
Catalin Marinas25ebee02007-09-25 15:22:24 +01002108config VFPv3
2109 bool
2110 depends on VFP
2111 default y if CPU_V7
2112
Catalin Marinasb5872db2008-01-10 19:16:17 +01002113config NEON
2114 bool "Advanced SIMD (NEON) Extension support"
2115 depends on VFPv3 && CPU_V7
2116 help
2117 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2118 Extension.
2119
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002120config KERNEL_MODE_NEON
2121 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002122 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002123 help
2124 Say Y to include support for NEON in kernel mode.
2125
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126endmenu
2127
2128menu "Userspace binary formats"
2129
2130source "fs/Kconfig.binfmt"
2131
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132endmenu
2133
2134menu "Power management options"
2135
Russell Kingeceab4a2005-11-15 11:31:41 +00002136source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137
Johannes Bergf4cb5702007-12-08 02:14:00 +01002138config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002139 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002140 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002141 def_bool y
2142
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002143config ARM_CPU_SUSPEND
2144 def_bool PM_SLEEP
2145
Sebastian Capella603fb422014-03-25 01:20:29 +01002146config ARCH_HIBERNATION_POSSIBLE
2147 bool
2148 depends on MMU
2149 default y if ARCH_SUSPEND_POSSIBLE
2150
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151endmenu
2152
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002153source "net/Kconfig"
2154
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002155source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156
Kumar Gala916f7432015-02-26 15:49:09 -06002157source "drivers/firmware/Kconfig"
2158
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159source "fs/Kconfig"
2160
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161source "arch/arm/Kconfig.debug"
2162
2163source "security/Kconfig"
2164
2165source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002166if CRYPTO
2167source "arch/arm/crypto/Kconfig"
2168endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169
2170source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002171
2172source "arch/arm/kvm/Kconfig"