blob: 471a3670cd3ee74ede9b0a57ef3d9c9679d50538 [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 || \
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100274 ARCH_FOOTBRIDGE || \
275 ARCH_INTEGRATOR || \
276 ARCH_IOP13XX || \
277 ARCH_KS8695 || \
278 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
279 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
280 default 0x20000000 if ARCH_S5PV210
281 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700282 default 0xc0000000 if ARCH_SA1100
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400283 help
284 Please provide the physical address corresponding to the
285 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000286
Simon Glass87e040b2011-08-16 23:44:26 +0100287config GENERIC_BUG
288 def_bool y
289 depends on BUG
290
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700291config PGTABLE_LEVELS
292 int
293 default 3 if ARM_LPAE
294 default 2
295
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296source "init/Kconfig"
297
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700298source "kernel/Kconfig.freezer"
299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300menu "System Type"
301
Hyok S. Choi3c427972009-07-24 12:35:00 +0100302config MMU
303 bool "MMU-based Paged Memory Management Support"
304 default y
305 help
306 Select if you want MMU-based virtualised addressing space
307 support by paged memory management. If unsure, say 'Y'.
308
Russell Kingccf50e22010-03-15 19:03:06 +0000309#
310# The "ARM system type" choice list is ordered alphabetically by option
311# text. Please add new entries in the option alphabetic order.
312#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313choice
314 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100315 default ARCH_VERSATILE if !MMU
316 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317
Rob Herring387798b2012-09-06 13:41:12 -0500318config ARCH_MULTIPLATFORM
319 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100320 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600321 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700322 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500323 select ARM_PATCH_PHYS_VIRT
324 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500325 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600326 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600327 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100328 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500329 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600330 select SPARSE_IRQ
331 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600332
Stefan Agner9c77bc42015-05-20 00:03:51 +0200333config ARM_SINGLE_ARMV7M
334 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
335 depends on !MMU
336 select ARCH_WANT_OPTIONAL_GPIOLIB
337 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200338 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200339 select CLKSRC_OF
340 select COMMON_CLK
341 select CPU_V7M
342 select GENERIC_CLOCKEVENTS
343 select NO_IOPORT_MAP
344 select SPARSE_IRQ
345 select USE_OF
346
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100347config ARCH_REALVIEW
348 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100349 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100350 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100351 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200352 select COMMON_CLK
353 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100354 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100355 select GPIO_PL061 if GPIOLIB
356 select ICST
357 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000358 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000359 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100360 help
361 This enables support for ARM Ltd RealView boards.
362
363config ARCH_VERSATILE
364 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100365 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100366 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100367 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100368 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100369 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100370 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900371 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000372 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000373 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100374 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000375 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100376 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100377 help
378 This enables support for ARM Ltd Versatile board.
379
Russell King93e22562012-10-12 14:20:52 +0100380config ARCH_CLPS711X
381 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400382 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400383 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400384 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100385 select COMMON_CLK
386 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400387 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400388 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400389 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100390 help
391 Support for Cirrus Logic 711x/721x/731x based boards.
392
Russell King788c9702009-04-26 14:21:59 +0100393config ARCH_GEMINI
394 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100395 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200396 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100397 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200398 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100399 help
400 Support for the Cortina Systems Gemini family SoCs
401
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402config ARCH_EBSA110
403 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100404 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000405 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100406 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600407 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400408 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700409 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 help
411 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000412 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 Ethernet interface, two PCMCIA sockets, two serial ports and a
414 parallel port.
415
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000416config ARCH_EP93XX
417 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100418 select ARCH_HAS_HOLES_MEMORYMODEL
419 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000420 select ARM_AMBA
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700421 select ARM_PATCH_PHYS_VIRT
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000422 select ARM_VIC
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700423 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100424 select CLKDEV_LOOKUP
Linus Walleij000bc172015-06-15 14:34:03 +0200425 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100426 select CPU_ARM920T
Linus Walleij000bc172015-06-15 14:34:03 +0200427 select GENERIC_CLOCKEVENTS
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000428 help
429 This enables support for the Cirrus EP93xx series of CPUs.
430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431config ARCH_FOOTBRIDGE
432 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000433 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000435 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200436 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600437 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400438 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000439 help
440 Support for systems based on the DC21285 companion chip
441 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100443config ARCH_NETX
444 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100445 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100446 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000447 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100448 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000449 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100450 This enables support for systems based on the Hilscher NetX Soc
451
Russell King3b938be2007-05-12 11:25:44 +0100452config ARCH_IOP13XX
453 bool "IOP13xx-based"
454 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100455 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400456 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600457 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100458 select PCI
459 select PLAT_IOP
460 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000461 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100462 help
463 Support for Intel's IOP13XX (XScale) family of processors.
464
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100465config ARCH_IOP32X
466 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100467 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100468 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000469 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200470 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600471 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100472 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100473 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000474 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100475 Support for Intel's 80219 and IOP32X (XScale) family of
476 processors.
477
478config ARCH_IOP33X
479 bool "IOP33x-based"
480 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100481 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000482 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200483 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600484 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100485 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100486 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100487 help
488 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
Russell King3b938be2007-05-12 11:25:44 +0100490config ARCH_IXP4XX
491 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100492 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500493 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100494 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100495 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100496 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000497 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100498 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100499 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100500 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600501 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200502 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100503 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100504 help
Russell King3b938be2007-05-12 11:25:44 +0100505 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100506
Saeed Bisharaedabd382009-08-06 15:12:43 +0300507config ARCH_DOVE
508 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300509 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100510 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300511 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100512 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100513 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100514 select PINCTRL
515 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200516 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300517 help
518 Support for the Marvell Dove SoC 88AP510
519
Russell King788c9702009-04-26 14:21:59 +0100520config ARCH_MV78XX0
521 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700522 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100523 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100524 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100525 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100526 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200527 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100528 help
529 Support for the following Marvell MV78xx0 series SoCs:
530 MV781x0, MV782x0.
531
532config ARCH_ORION5X
533 bool "Marvell Orion"
534 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700535 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100536 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100537 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100538 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100539 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200540 select PLAT_ORION_LEGACY
Benjamin Cama5be9fc22015-07-14 16:25:58 +0200541 select MULTI_IRQ_HANDLER
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
624config ARCH_RPC
625 bool "RiscPC"
626 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100627 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100628 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000629 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100630 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100631 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200632 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100633 select HAVE_PATA_PLATFORM
634 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600635 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400636 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700637 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100638 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 help
640 On the Acorn Risc-PC, Linux can support the internal IDE disk and
641 CD-ROM interface, serial and parallel port, and the floppy drive.
642
643config ARCH_SA1100
644 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100645 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700646 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100647 select ARCH_SPARSEMEM_ENABLE
648 select CLKDEV_LOOKUP
649 select CLKSRC_MMIO
650 select CPU_FREQ
651 select CPU_SA1100
652 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200653 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100654 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100655 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100656 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400657 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100658 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000659 help
660 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900662config ARCH_S3C24XX
663 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900664 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100665 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100666 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200667 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800668 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900669 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900670 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900671 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100672 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900673 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600674 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900675 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900677 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
678 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
679 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
680 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900681
Ben Dooksa08ab632008-10-21 14:06:39 +0100682config ARCH_S3C64XX
683 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900684 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200685 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select ARM_VIC
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
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900690 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900691 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800692 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900693 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900694 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900695 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100696 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700697 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100698 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100699 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100700 select S3C_DEV_NAND
701 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900702 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900703 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900704 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100705 help
706 Samsung S3C64XX series based systems
707
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100708config ARCH_DAVINCI
709 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100710 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700711 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100712 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700713 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100714 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100715 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100716 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500717 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530718 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100719 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100720 help
721 Support for TI's DaVinci platform.
722
Tony Lindgrena0694862013-01-11 11:24:20 -0800723config ARCH_OMAP1
724 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600725 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100726 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800727 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100728 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200729 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100730 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100731 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800732 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800733 select HAVE_IDE
734 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700735 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800736 select NEED_MACH_IO_H if PCCARD
737 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700738 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100739 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800740 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800741
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742endchoice
743
Rob Herring387798b2012-09-06 13:41:12 -0500744menu "Multiple platform selection"
745 depends on ARCH_MULTIPLATFORM
746
747comment "CPU Core family selection"
748
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100749config ARCH_MULTI_V4
750 bool "ARMv4 based platforms (FA526)"
751 depends on !ARCH_MULTI_V6_V7
752 select ARCH_MULTI_V4_V5
753 select CPU_FA526
754
Rob Herring387798b2012-09-06 13:41:12 -0500755config ARCH_MULTI_V4T
756 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500757 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100758 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200759 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
760 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
761 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500762
763config ARCH_MULTI_V5
764 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500765 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100766 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100767 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200768 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
769 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500770
771config ARCH_MULTI_V4_V5
772 bool
773
774config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800775 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500776 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600777 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500778
779config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800780 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500781 default y
782 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100783 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600784 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500785
786config ARCH_MULTI_V6_V7
787 bool
Rob Herring9352b052014-01-31 15:36:10 -0600788 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500789
790config ARCH_MULTI_CPU_AUTO
791 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
792 select ARCH_MULTI_V5
793
794endmenu
795
Rob Herring05e2a3d2013-12-05 10:04:54 -0600796config ARCH_VIRT
797 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600798 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600799 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600800 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600801 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600802
Russell Kingccf50e22010-03-15 19:03:06 +0000803#
804# This is sorted alphabetically by mach-* pathname. However, plat-*
805# Kconfigs may be included either alphabetically (according to the
806# plat- suffix) or along side the corresponding mach-* source.
807#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200808source "arch/arm/mach-mvebu/Kconfig"
809
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200810source "arch/arm/mach-alpine/Kconfig"
811
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100812source "arch/arm/mach-asm9260/Kconfig"
813
Russell King95b8f202010-01-14 11:43:54 +0000814source "arch/arm/mach-at91/Kconfig"
815
Anders Berg1d22924e2014-05-23 11:08:35 +0200816source "arch/arm/mach-axxia/Kconfig"
817
Christian Daudt8ac49e02012-11-19 09:46:10 -0800818source "arch/arm/mach-bcm/Kconfig"
819
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200820source "arch/arm/mach-berlin/Kconfig"
821
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822source "arch/arm/mach-clps711x/Kconfig"
823
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300824source "arch/arm/mach-cns3xxx/Kconfig"
825
Russell King95b8f202010-01-14 11:43:54 +0000826source "arch/arm/mach-davinci/Kconfig"
827
Baruch Siachdf8d7422015-01-14 10:40:30 +0200828source "arch/arm/mach-digicolor/Kconfig"
829
Russell King95b8f202010-01-14 11:43:54 +0000830source "arch/arm/mach-dove/Kconfig"
831
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000832source "arch/arm/mach-ep93xx/Kconfig"
833
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834source "arch/arm/mach-footbridge/Kconfig"
835
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200836source "arch/arm/mach-gemini/Kconfig"
837
Rob Herring387798b2012-09-06 13:41:12 -0500838source "arch/arm/mach-highbank/Kconfig"
839
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800840source "arch/arm/mach-hisi/Kconfig"
841
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842source "arch/arm/mach-integrator/Kconfig"
843
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100844source "arch/arm/mach-iop32x/Kconfig"
845
846source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847
Dan Williams285f5fa2006-12-07 02:59:39 +0100848source "arch/arm/mach-iop13xx/Kconfig"
849
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850source "arch/arm/mach-ixp4xx/Kconfig"
851
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400852source "arch/arm/mach-keystone/Kconfig"
853
Russell King95b8f202010-01-14 11:43:54 +0000854source "arch/arm/mach-ks8695/Kconfig"
855
Carlo Caione3b8f5032014-09-10 22:16:59 +0200856source "arch/arm/mach-meson/Kconfig"
857
Jonas Jensen17723fd32013-12-18 13:58:45 +0100858source "arch/arm/mach-moxart/Kconfig"
859
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200860source "arch/arm/mach-mv78xx0/Kconfig"
861
Shawn Guo3995eb82012-09-13 19:48:07 +0800862source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863
Matthias Bruggerf682a212014-05-13 01:06:13 +0200864source "arch/arm/mach-mediatek/Kconfig"
865
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800866source "arch/arm/mach-mxs/Kconfig"
867
Russell King95b8f202010-01-14 11:43:54 +0000868source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800869
Russell King95b8f202010-01-14 11:43:54 +0000870source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000871
Daniel Tang9851ca52013-06-11 18:40:17 +1000872source "arch/arm/mach-nspire/Kconfig"
873
Tony Lindgrend48af152005-07-10 19:58:17 +0100874source "arch/arm/plat-omap/Kconfig"
875
876source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877
Tony Lindgren1dbae812005-11-10 14:26:51 +0000878source "arch/arm/mach-omap2/Kconfig"
879
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400880source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400881
Rob Herring387798b2012-09-06 13:41:12 -0500882source "arch/arm/mach-picoxcell/Kconfig"
883
Russell King95b8f202010-01-14 11:43:54 +0000884source "arch/arm/mach-pxa/Kconfig"
885source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886
Russell King95b8f202010-01-14 11:43:54 +0000887source "arch/arm/mach-mmp/Kconfig"
888
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600889source "arch/arm/mach-qcom/Kconfig"
890
Russell King95b8f202010-01-14 11:43:54 +0000891source "arch/arm/mach-realview/Kconfig"
892
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200893source "arch/arm/mach-rockchip/Kconfig"
894
Russell King95b8f202010-01-14 11:43:54 +0000895source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300896
Rob Herring387798b2012-09-06 13:41:12 -0500897source "arch/arm/mach-socfpga/Kconfig"
898
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100899source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100900
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100901source "arch/arm/mach-sti/Kconfig"
902
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900903source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904
Ben Dooks431107e2010-01-26 10:11:04 +0900905source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100906
Kukjin Kim170f4e42010-02-24 16:40:44 +0900907source "arch/arm/mach-s5pv210/Kconfig"
908
Kukjin Kim83014572011-11-06 13:54:56 +0900909source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500910source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900911
Russell King882d01f2010-03-02 23:40:15 +0000912source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913
Maxime Ripard3b526342012-11-08 12:40:16 +0100914source "arch/arm/mach-sunxi/Kconfig"
915
Barry Song156a0992012-08-23 13:41:58 +0800916source "arch/arm/mach-prima2/Kconfig"
917
Erik Gillingc5f80062010-01-21 16:53:02 -0800918source "arch/arm/mach-tegra/Kconfig"
919
Russell King95b8f202010-01-14 11:43:54 +0000920source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900922source "arch/arm/mach-uniphier/Kconfig"
923
Russell King95b8f202010-01-14 11:43:54 +0000924source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
926source "arch/arm/mach-versatile/Kconfig"
927
Russell Kingceade892010-02-11 21:44:53 +0000928source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000929source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000930
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300931source "arch/arm/mach-vt8500/Kconfig"
932
wanzongshun7ec80dd2008-12-03 03:55:38 +0100933source "arch/arm/mach-w90x900/Kconfig"
934
Jun Nieacede512015-04-28 17:18:05 +0800935source "arch/arm/mach-zx/Kconfig"
936
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600937source "arch/arm/mach-zynq/Kconfig"
938
Stefan Agner499f1642015-05-21 00:35:44 +0200939# ARMv7-M architecture
940config ARCH_EFM32
941 bool "Energy Micro efm32"
942 depends on ARM_SINGLE_ARMV7M
943 select ARCH_REQUIRE_GPIOLIB
944 help
945 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
946 processors.
947
948config ARCH_LPC18XX
949 bool "NXP LPC18xx/LPC43xx"
950 depends on ARM_SINGLE_ARMV7M
951 select ARCH_HAS_RESET_CONTROLLER
952 select ARM_AMBA
953 select CLKSRC_LPC32XX
954 select PINCTRL
955 help
956 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
957 high performance microcontrollers.
958
959config ARCH_STM32
960 bool "STMicrolectronics STM32"
961 depends on ARM_SINGLE_ARMV7M
962 select ARCH_HAS_RESET_CONTROLLER
963 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200964 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200965 select RESET_CONTROLLER
966 help
967 Support for STMicroelectronics STM32 processors.
968
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969# Definitions to make life easier
970config ARCH_ACORN
971 bool
972
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100973config PLAT_IOP
974 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700975 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100976
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400977config PLAT_ORION
978 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100979 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100980 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100981 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200982 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400983
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200984config PLAT_ORION_LEGACY
985 bool
986 select PLAT_ORION
987
Eric Miaobd5ce432009-01-20 12:06:01 +0800988config PLAT_PXA
989 bool
990
Russell Kingf4b8b312010-01-14 12:48:06 +0000991config PLAT_VERSATILE
992 bool
993
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900994source "arch/arm/firmware/Kconfig"
995
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996source arch/arm/mm/Kconfig
997
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100998config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +0100999 bool "Enable iWMMXt support"
1000 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1001 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001002 help
1003 Enable support for iWMMXt context switching at run time if
1004 running on a CPU that supports it.
1005
eric miao52108642010-12-13 09:42:34 +01001006config MULTI_IRQ_HANDLER
1007 bool
1008 help
1009 Allow each machine to specify it's own IRQ handler at run time.
1010
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001011if !MMU
1012source "arch/arm/Kconfig-nommu"
1013endif
1014
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001015config PJ4B_ERRATA_4742
1016 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1017 depends on CPU_PJ4B && MACH_ARMADA_370
1018 default y
1019 help
1020 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1021 Event (WFE) IDLE states, a specific timing sensitivity exists between
1022 the retiring WFI/WFE instructions and the newly issued subsequent
1023 instructions. This sensitivity can result in a CPU hang scenario.
1024 Workaround:
1025 The software must insert either a Data Synchronization Barrier (DSB)
1026 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1027 instruction
1028
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001029config ARM_ERRATA_326103
1030 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1031 depends on CPU_V6
1032 help
1033 Executing a SWP instruction to read-only memory does not set bit 11
1034 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1035 treat the access as a read, preventing a COW from occurring and
1036 causing the faulting task to livelock.
1037
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001038config ARM_ERRATA_411920
1039 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001040 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001041 help
1042 Invalidation of the Instruction Cache operation can
1043 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1044 It does not affect the MPCore. This option enables the ARM Ltd.
1045 recommended workaround.
1046
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001047config ARM_ERRATA_430973
1048 bool "ARM errata: Stale prediction on replaced interworking branch"
1049 depends on CPU_V7
1050 help
1051 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001052 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001053 interworking branch is replaced with another code sequence at the
1054 same virtual address, whether due to self-modifying code or virtual
1055 to physical address re-mapping, Cortex-A8 does not recover from the
1056 stale interworking branch prediction. This results in Cortex-A8
1057 executing the new code sequence in the incorrect ARM or Thumb state.
1058 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1059 and also flushes the branch target cache at every context switch.
1060 Note that setting specific bits in the ACTLR register may not be
1061 available in non-secure mode.
1062
Catalin Marinas855c5512009-04-30 17:06:15 +01001063config ARM_ERRATA_458693
1064 bool "ARM errata: Processor deadlock when a false hazard is created"
1065 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001066 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001067 help
1068 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1069 erratum. For very specific sequences of memory operations, it is
1070 possible for a hazard condition intended for a cache line to instead
1071 be incorrectly associated with a different cache line. This false
1072 hazard might then cause a processor deadlock. The workaround enables
1073 the L1 caching of the NEON accesses and disables the PLD instruction
1074 in the ACTLR register. Note that setting specific bits in the ACTLR
1075 register may not be available in non-secure mode.
1076
Catalin Marinas0516e462009-04-30 17:06:20 +01001077config ARM_ERRATA_460075
1078 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1079 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001080 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001081 help
1082 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1083 erratum. Any asynchronous access to the L2 cache may encounter a
1084 situation in which recent store transactions to the L2 cache are lost
1085 and overwritten with stale memory contents from external memory. The
1086 workaround disables the write-allocate mode for the L2 cache via the
1087 ACTLR register. Note that setting specific bits in the ACTLR register
1088 may not be available in non-secure mode.
1089
Will Deacon9f050272010-09-14 09:51:43 +01001090config ARM_ERRATA_742230
1091 bool "ARM errata: DMB operation may be faulty"
1092 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001093 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001094 help
1095 This option enables the workaround for the 742230 Cortex-A9
1096 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1097 between two write operations may not ensure the correct visibility
1098 ordering of the two writes. This workaround sets a specific bit in
1099 the diagnostic register of the Cortex-A9 which causes the DMB
1100 instruction to behave as a DSB, ensuring the correct behaviour of
1101 the two writes.
1102
Will Deacona672e992010-09-14 09:53:02 +01001103config ARM_ERRATA_742231
1104 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1105 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001106 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001107 help
1108 This option enables the workaround for the 742231 Cortex-A9
1109 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1110 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1111 accessing some data located in the same cache line, may get corrupted
1112 data due to bad handling of the address hazard when the line gets
1113 replaced from one of the CPUs at the same time as another CPU is
1114 accessing it. This workaround sets specific bits in the diagnostic
1115 register of the Cortex-A9 which reduces the linefill issuing
1116 capabilities of the processor.
1117
Jon Medhurst69155792013-06-07 10:35:35 +01001118config ARM_ERRATA_643719
1119 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1120 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001121 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001122 help
1123 This option enables the workaround for the 643719 Cortex-A9 (prior to
1124 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1125 register returns zero when it should return one. The workaround
1126 corrects this value, ensuring cache maintenance operations which use
1127 it behave as intended and avoiding data corruption.
1128
Will Deaconcdf357f2010-08-05 11:20:51 +01001129config ARM_ERRATA_720789
1130 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001131 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001132 help
1133 This option enables the workaround for the 720789 Cortex-A9 (prior to
1134 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1135 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1136 As a consequence of this erratum, some TLB entries which should be
1137 invalidated are not, resulting in an incoherency in the system page
1138 tables. The workaround changes the TLB flushing routines to invalidate
1139 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001140
1141config ARM_ERRATA_743622
1142 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1143 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001144 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001145 help
1146 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001147 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001148 optimisation in the Cortex-A9 Store Buffer may lead to data
1149 corruption. This workaround sets a specific bit in the diagnostic
1150 register of the Cortex-A9 which disables the Store Buffer
1151 optimisation, preventing the defect from occurring. This has no
1152 visible impact on the overall performance or power consumption of the
1153 processor.
1154
Will Deacon9a27c272011-02-18 16:36:35 +01001155config ARM_ERRATA_751472
1156 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001157 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001158 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001159 help
1160 This option enables the workaround for the 751472 Cortex-A9 (prior
1161 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1162 completion of a following broadcasted operation if the second
1163 operation is received by a CPU before the ICIALLUIS has completed,
1164 potentially leading to corrupted entries in the cache or TLB.
1165
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001166config ARM_ERRATA_754322
1167 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1168 depends on CPU_V7
1169 help
1170 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1171 r3p*) erratum. A speculative memory access may cause a page table walk
1172 which starts prior to an ASID switch but completes afterwards. This
1173 can populate the micro-TLB with a stale entry which may be hit with
1174 the new ASID. This workaround places two dsb instructions in the mm
1175 switching code so that no page table walks can cross the ASID switch.
1176
Will Deacon5dab26af2011-03-04 12:38:54 +01001177config ARM_ERRATA_754327
1178 bool "ARM errata: no automatic Store Buffer drain"
1179 depends on CPU_V7 && SMP
1180 help
1181 This option enables the workaround for the 754327 Cortex-A9 (prior to
1182 r2p0) erratum. The Store Buffer does not have any automatic draining
1183 mechanism and therefore a livelock may occur if an external agent
1184 continuously polls a memory location waiting to observe an update.
1185 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1186 written polling loops from denying visibility of updates to memory.
1187
Catalin Marinas145e10e2011-08-15 11:04:41 +01001188config ARM_ERRATA_364296
1189 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001190 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001191 help
1192 This options enables the workaround for the 364296 ARM1136
1193 r0p2 erratum (possible cache data corruption with
1194 hit-under-miss enabled). It sets the undocumented bit 31 in
1195 the auxiliary control register and the FI bit in the control
1196 register, thus disabling hit-under-miss without putting the
1197 processor into full low interrupt latency mode. ARM11MPCore
1198 is not affected.
1199
Will Deaconf630c1b2011-09-15 11:45:15 +01001200config ARM_ERRATA_764369
1201 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1202 depends on CPU_V7 && SMP
1203 help
1204 This option enables the workaround for erratum 764369
1205 affecting Cortex-A9 MPCore with two or more processors (all
1206 current revisions). Under certain timing circumstances, a data
1207 cache line maintenance operation by MVA targeting an Inner
1208 Shareable memory region may fail to proceed up to either the
1209 Point of Coherency or to the Point of Unification of the
1210 system. This workaround adds a DSB instruction before the
1211 relevant cache maintenance functions and sets a specific bit
1212 in the diagnostic control register of the SCU.
1213
Simon Horman7253b852012-09-28 02:12:45 +01001214config ARM_ERRATA_775420
1215 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1216 depends on CPU_V7
1217 help
1218 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1219 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1220 operation aborts with MMU exception, it might cause the processor
1221 to deadlock. This workaround puts DSB before executing ISB if
1222 an abort may occur on cache maintenance.
1223
Catalin Marinas93dc6882013-03-26 23:35:04 +01001224config ARM_ERRATA_798181
1225 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1226 depends on CPU_V7 && SMP
1227 help
1228 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1229 adequately shooting down all use of the old entries. This
1230 option enables the Linux kernel workaround for this erratum
1231 which sends an IPI to the CPUs that are running the same ASID
1232 as the one being invalidated.
1233
Will Deacon84b65042013-08-20 17:29:55 +01001234config ARM_ERRATA_773022
1235 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1236 depends on CPU_V7
1237 help
1238 This option enables the workaround for the 773022 Cortex-A15
1239 (up to r0p4) erratum. In certain rare sequences of code, the
1240 loop buffer may deliver incorrect instructions. This
1241 workaround disables the loop buffer to avoid the erratum.
1242
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243endmenu
1244
1245source "arch/arm/common/Kconfig"
1246
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247menu "Bus support"
1248
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249config ISA
1250 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 help
1252 Find out whether you have ISA slots on your motherboard. ISA is the
1253 name of a bus system, i.e. the way the CPU talks to the other stuff
1254 inside your box. Other bus systems are PCI, EISA, MicroChannel
1255 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1256 newer boards don't support it. If you have ISA, say Y, otherwise N.
1257
Russell King065909b2006-01-04 15:44:16 +00001258# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259config ISA_DMA
1260 bool
Russell King065909b2006-01-04 15:44:16 +00001261 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262
Russell King065909b2006-01-04 15:44:16 +00001263# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001264config ISA_DMA_API
1265 bool
Al Viro5cae8412005-05-04 05:39:22 +01001266
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001268 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 help
1270 Find out whether you have a PCI motherboard. PCI is the name of a
1271 bus system, i.e. the way the CPU talks to the other stuff inside
1272 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1273 VESA. If you have PCI, say Y, otherwise N.
1274
Anton Vorontsov52882172010-04-19 13:20:49 +01001275config PCI_DOMAINS
1276 bool
1277 depends on PCI
1278
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001279config PCI_DOMAINS_GENERIC
1280 def_bool PCI_DOMAINS
1281
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001282config PCI_NANOENGINE
1283 bool "BSE nanoEngine PCI support"
1284 depends on SA1100_NANOENGINE
1285 help
1286 Enable PCI on the BSE nanoEngine board.
1287
Matthew Wilcox36e23592007-07-10 10:54:40 -06001288config PCI_SYSCALL
1289 def_bool PCI
1290
Mike Rapoporta0113a92007-11-25 08:55:34 +01001291config PCI_HOST_ITE8152
1292 bool
1293 depends on PCI && MACH_ARMCORE
1294 default y
1295 select DMABOUNCE
1296
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001298source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299
1300source "drivers/pcmcia/Kconfig"
1301
1302endmenu
1303
1304menu "Kernel Features"
1305
Dave Martin3b556582011-12-07 15:38:04 +00001306config HAVE_SMP
1307 bool
1308 help
1309 This option should be selected by machines which have an SMP-
1310 capable CPU.
1311
1312 The only effect of this option is to make the SMP-related
1313 options available to the user for configuration.
1314
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001316 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001317 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001318 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001319 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001320 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001321 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 help
1323 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001324 a system with only one CPU, say N. If you have a system with more
1325 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326
Robert Graffham4a474152014-01-23 15:55:29 -08001327 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001329 you say Y here, the kernel will run on many, but not all,
1330 uniprocessor machines. On a uniprocessor machine, the kernel
1331 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332
Paul Bolle395cf962011-08-15 02:02:26 +02001333 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001335 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336
1337 If you don't know what to do here, say N.
1338
Russell Kingf00ec482010-09-04 10:47:48 +01001339config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001340 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001341 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001342 default y
1343 help
1344 SMP kernels contain instructions which fail on non-SMP processors.
1345 Enabling this option allows the kernel to modify itself to make
1346 these instructions safe. Disabling it allows about 1K of space
1347 savings.
1348
1349 If you don't know what to do here, say Y.
1350
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001351config ARM_CPU_TOPOLOGY
1352 bool "Support cpu topology definition"
1353 depends on SMP && CPU_V7
1354 default y
1355 help
1356 Support ARM cpu topology definition. The MPIDR register defines
1357 affinity between processors which is then used to describe the cpu
1358 topology of an ARM System.
1359
1360config SCHED_MC
1361 bool "Multi-core scheduler support"
1362 depends on ARM_CPU_TOPOLOGY
1363 help
1364 Multi-core scheduler support improves the CPU scheduler's decision
1365 making when dealing with multi-core CPU chips at a cost of slightly
1366 increased overhead in some places. If unsure say N here.
1367
1368config SCHED_SMT
1369 bool "SMT scheduler support"
1370 depends on ARM_CPU_TOPOLOGY
1371 help
1372 Improves the CPU scheduler's decision making when dealing with
1373 MultiThreading at a cost of slightly increased overhead in some
1374 places. If unsure say N here.
1375
Russell Kinga8cbcd92009-05-16 11:51:14 +01001376config HAVE_ARM_SCU
1377 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001378 help
1379 This option enables support for the ARM system coherency unit
1380
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001381config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001382 bool "Architected timer support"
1383 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001384 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001385 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001386 help
1387 This option enables support for the ARM architected timer
1388
Russell Kingf32f4ce2009-05-16 12:14:21 +01001389config HAVE_ARM_TWD
1390 bool
1391 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001392 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001393 help
1394 This options enables support for the ARM timer and watchdog unit
1395
Nicolas Pitree8db2882012-04-12 02:45:22 -04001396config MCPM
1397 bool "Multi-Cluster Power Management"
1398 depends on CPU_V7 && SMP
1399 help
1400 This option provides the common power management infrastructure
1401 for (multi-)cluster based systems, such as big.LITTLE based
1402 systems.
1403
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001404config MCPM_QUAD_CLUSTER
1405 bool
1406 depends on MCPM
1407 help
1408 To avoid wasting resources unnecessarily, MCPM only supports up
1409 to 2 clusters by default.
1410 Platforms with 3 or 4 clusters that use MCPM must select this
1411 option to allow the additional clusters to be managed.
1412
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001413config BIG_LITTLE
1414 bool "big.LITTLE support (Experimental)"
1415 depends on CPU_V7 && SMP
1416 select MCPM
1417 help
1418 This option enables support selections for the big.LITTLE
1419 system architecture.
1420
1421config BL_SWITCHER
1422 bool "big.LITTLE switcher support"
1423 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001424 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001425 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001426 help
1427 The big.LITTLE "switcher" provides the core functionality to
1428 transparently handle transition between a cluster of A15's
1429 and a cluster of A7's in a big.LITTLE system.
1430
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001431config BL_SWITCHER_DUMMY_IF
1432 tristate "Simple big.LITTLE switcher user interface"
1433 depends on BL_SWITCHER && DEBUG_KERNEL
1434 help
1435 This is a simple and dummy char dev interface to control
1436 the big.LITTLE switcher core code. It is meant for
1437 debugging purposes only.
1438
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001439choice
1440 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001441 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001442 default VMSPLIT_3G
1443 help
1444 Select the desired split between kernel and user memory.
1445
1446 If you are not absolutely sure what you are doing, leave this
1447 option alone!
1448
1449 config VMSPLIT_3G
1450 bool "3G/1G user/kernel split"
1451 config VMSPLIT_2G
1452 bool "2G/2G user/kernel split"
1453 config VMSPLIT_1G
1454 bool "1G/3G user/kernel split"
1455endchoice
1456
1457config PAGE_OFFSET
1458 hex
Russell King006fa252014-02-26 19:40:46 +00001459 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001460 default 0x40000000 if VMSPLIT_1G
1461 default 0x80000000 if VMSPLIT_2G
1462 default 0xC0000000
1463
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464config NR_CPUS
1465 int "Maximum number of CPUs (2-32)"
1466 range 2 32
1467 depends on SMP
1468 default "4"
1469
Russell Kinga054a812005-11-02 22:24:33 +00001470config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001471 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001472 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001473 help
1474 Say Y here to experiment with turning CPUs off and on. CPUs
1475 can be controlled through /sys/devices/system/cpu.
1476
Will Deacon2bdd4242012-12-12 19:20:52 +00001477config ARM_PSCI
1478 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1479 depends on CPU_V7
Mark Rutlandbe120392015-07-31 15:46:19 +01001480 select ARM_PSCI_FW
Will Deacon2bdd4242012-12-12 19:20:52 +00001481 help
1482 Say Y here if you want Linux to communicate with system firmware
1483 implementing the PSCI specification for CPU-centric power
1484 management operations described in ARM document number ARM DEN
1485 0022A ("Power State Coordination Interface System Software on
1486 ARM processors").
1487
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001488# The GPIO number here must be sorted by descending number. In case of
1489# a multiplatform kernel, we just want the highest value required by the
1490# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001491config ARCH_NR_GPIO
1492 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001493 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1494 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001495 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1496 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001497 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001498 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001499 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001500 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001501 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001502 default 0
1503 help
1504 Maximum number of GPIOs in the system.
1505
1506 If unsure, leave the default value.
1507
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001508source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509
Russell Kingc9218b12013-04-27 23:31:10 +01001510config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001511 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001512 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001513 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001514 default 128 if SOC_AT91RM9200
Russell King47d84682013-09-10 23:47:55 +01001515 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001516
1517choice
Russell King47d84682013-09-10 23:47:55 +01001518 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001519 prompt "Timer frequency"
1520
1521config HZ_100
1522 bool "100 Hz"
1523
1524config HZ_200
1525 bool "200 Hz"
1526
1527config HZ_250
1528 bool "250 Hz"
1529
1530config HZ_300
1531 bool "300 Hz"
1532
1533config HZ_500
1534 bool "500 Hz"
1535
1536config HZ_1000
1537 bool "1000 Hz"
1538
1539endchoice
1540
1541config HZ
1542 int
Russell King47d84682013-09-10 23:47:55 +01001543 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001544 default 100 if HZ_100
1545 default 200 if HZ_200
1546 default 250 if HZ_250
1547 default 300 if HZ_300
1548 default 500 if HZ_500
1549 default 1000
1550
1551config SCHED_HRTICK
1552 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001553
Catalin Marinas16c79652009-07-24 12:33:02 +01001554config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001555 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001556 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001557 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001558 select AEABI
1559 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001560 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001561 help
1562 By enabling this option, the kernel will be compiled in
1563 Thumb-2 mode. A compiler/assembler that understand the unified
1564 ARM-Thumb syntax is needed.
1565
1566 If unsure, say N.
1567
Dave Martin6f685c52011-03-03 11:41:12 +01001568config THUMB2_AVOID_R_ARM_THM_JUMP11
1569 bool "Work around buggy Thumb-2 short branch relocations in gas"
1570 depends on THUMB2_KERNEL && MODULES
1571 default y
1572 help
1573 Various binutils versions can resolve Thumb-2 branches to
1574 locally-defined, preemptible global symbols as short-range "b.n"
1575 branch instructions.
1576
1577 This is a problem, because there's no guarantee the final
1578 destination of the symbol, or any candidate locations for a
1579 trampoline, are within range of the branch. For this reason, the
1580 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1581 relocation in modules at all, and it makes little sense to add
1582 support.
1583
1584 The symptom is that the kernel fails with an "unsupported
1585 relocation" error when loading some modules.
1586
1587 Until fixed tools are available, passing
1588 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1589 code which hits this problem, at the cost of a bit of extra runtime
1590 stack usage in some cases.
1591
1592 The problem is described in more detail at:
1593 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1594
1595 Only Thumb-2 kernels are affected.
1596
1597 Unless you are sure your tools don't have this problem, say Y.
1598
Catalin Marinas0becb082009-07-24 12:32:53 +01001599config ARM_ASM_UNIFIED
1600 bool
1601
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001602config AEABI
1603 bool "Use the ARM EABI to compile the kernel"
1604 help
1605 This option allows for the kernel to be compiled using the latest
1606 ARM ABI (aka EABI). This is only useful if you are using a user
1607 space environment that is also compiled with EABI.
1608
1609 Since there are major incompatibilities between the legacy ABI and
1610 EABI, especially with regard to structure member alignment, this
1611 option also changes the kernel syscall calling convention to
1612 disambiguate both ABIs and allow for backward compatibility support
1613 (selected with CONFIG_OABI_COMPAT).
1614
1615 To use this you need GCC version 4.0.0 or later.
1616
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001617config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001618 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001619 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001620 help
1621 This option preserves the old syscall interface along with the
1622 new (ARM EABI) one. It also provides a compatibility layer to
1623 intercept syscalls that have structure arguments which layout
1624 in memory differs between the legacy ABI and the new ARM EABI
1625 (only for non "thumb" binaries). This option adds a tiny
1626 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001627
1628 The seccomp filter system will not be available when this is
1629 selected, since there is no way yet to sensibly distinguish
1630 between calling conventions during filtering.
1631
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001632 If you know you'll be using only pure EABI user space then you
1633 can say N here. If this option is not selected and you attempt
1634 to execute a legacy ABI binary then the result will be
1635 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001636 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001637
Mel Gormaneb335752009-05-13 17:34:48 +01001638config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001639 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001640
Russell King05944d72006-11-30 20:43:51 +00001641config ARCH_SPARSEMEM_ENABLE
1642 bool
1643
Russell King07a2f732008-10-01 21:39:58 +01001644config ARCH_SPARSEMEM_DEFAULT
1645 def_bool ARCH_SPARSEMEM_ENABLE
1646
Russell King05944d72006-11-30 20:43:51 +00001647config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001648 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001649
Will Deacon7b7bf492011-05-19 13:21:14 +01001650config HAVE_ARCH_PFN_VALID
1651 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1652
Steve Capperb8cd51a2014-10-09 15:29:20 -07001653config HAVE_GENERIC_RCU_GUP
1654 def_bool y
1655 depends on ARM_LPAE
1656
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001657config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001658 bool "High Memory Support"
1659 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001660 help
1661 The address space of ARM processors is only 4 Gigabytes large
1662 and it has to accommodate user address space, kernel address
1663 space as well as some memory mapped IO. That means that, if you
1664 have a large amount of physical memory and/or IO, not all of the
1665 memory can be "permanently mapped" by the kernel. The physical
1666 memory that is not permanently mapped is called "high memory".
1667
1668 Depending on the selected kernel/user memory split, minimum
1669 vmalloc space and actual amount of RAM, you may not need this
1670 option which should result in a slightly faster kernel.
1671
1672 If unsure, say n.
1673
Russell King65cec8e2009-08-17 20:02:06 +01001674config HIGHPTE
1675 bool "Allocate 2nd-level pagetables from highmem"
1676 depends on HIGHMEM
Russell Kingb4d103d2015-06-25 10:49:45 +01001677 help
1678 The VM uses one page of physical memory for each page table.
1679 For systems with a lot of processes, this can use a lot of
1680 precious low memory, eventually leading to low memory being
1681 consumed by page tables. Setting this option will allow
1682 user-space 2nd level page tables to reside in high memory.
Russell King65cec8e2009-08-17 20:02:06 +01001683
Russell Kinga5e090a2015-08-19 20:40:41 +01001684config CPU_SW_DOMAIN_PAN
1685 bool "Enable use of CPU domains to implement privileged no-access"
1686 depends on MMU && !ARM_LPAE
Jamie Iles1b8873a2010-02-02 20:25:44 +01001687 default y
1688 help
Russell Kinga5e090a2015-08-19 20:40:41 +01001689 Increase kernel security by ensuring that normal kernel accesses
1690 are unable to access userspace addresses. This can help prevent
1691 use-after-free bugs becoming an exploitable privilege escalation
1692 by ensuring that magic values (such as LIST_POISON) will always
1693 fault when dereferenced.
1694
1695 CPUs with low-vector mappings use a best-efforts implementation.
1696 Their lower 1MB needs to remain accessible for the vectors, but
1697 the remainder of userspace will become appropriately inaccessible.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698
1699config HW_PERF_EVENTS
Mark Rutlandfa8ad782015-07-06 12:23:53 +01001700 def_bool y
1701 depends on ARM_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001702
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001703config SYS_SUPPORTS_HUGETLBFS
1704 def_bool y
1705 depends on ARM_LPAE
1706
Catalin Marinas8d962502012-07-25 14:39:26 +01001707config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1708 def_bool y
1709 depends on ARM_LPAE
1710
Steven Capper4bfab202013-07-26 14:58:22 +01001711config ARCH_WANT_GENERAL_HUGETLB
1712 def_bool y
1713
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001714config ARM_MODULE_PLTS
1715 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1716 depends on MODULES
1717 help
1718 Allocate PLTs when loading modules so that jumps and calls whose
1719 targets are too far away for their relative offsets to be encoded
1720 in the instructions themselves can be bounced via veneers in the
1721 module's PLT. This allows modules to be allocated in the generic
1722 vmalloc area after the dedicated module memory area has been
1723 exhausted. The modules will use slightly more memory, but after
1724 rounding up to page size, the actual memory footprint is usually
1725 the same.
1726
1727 Say y if you are getting out of memory errors while loading modules
1728
Linus Torvalds1da177e2005-04-16 15:20:36 -07001729source "mm/Kconfig"
1730
Magnus Dammc1b2d972010-07-05 10:00:11 +01001731config FORCE_MAX_ZONEORDER
Ulrich Hecht36d6c922015-08-14 15:51:06 +02001732 int "Maximum zone order"
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001733 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001734 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001735 default "11"
1736 help
1737 The kernel memory allocator divides physically contiguous memory
1738 blocks into "zones", where each zone is a power of two number of
1739 pages. This option selects the largest power of two that the kernel
1740 keeps in the memory allocator. If you need to allocate very large
1741 blocks of physically contiguous memory, then you may need to
1742 increase this value.
1743
1744 This config option is actually maximum order plus one. For example,
1745 a value of 11 means that the largest free memory block is 2^10 pages.
1746
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747config ALIGNMENT_TRAP
1748 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001749 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001751 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001753 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1755 address divisible by 4. On 32-bit ARM processors, these non-aligned
1756 fetch/store instructions will be emulated in software if you say
1757 here, which has a severe performance impact. This is necessary for
1758 correct operation of some network protocols. With an IP-only
1759 configuration it is safe to say N, otherwise say Y.
1760
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001761config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001762 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1763 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001764 default y if CPU_FEROCEON
1765 help
1766 Implement faster copy_to_user and clear_user methods for CPU
1767 cores where a 8-word STM instruction give significantly higher
1768 memory write throughput than a sequence of individual 32bit stores.
1769
1770 A possible side effect is a slight increase in scheduling latency
1771 between threads sharing the same address space if they invoke
1772 such copy operations with large buffers.
1773
1774 However, if the CPU data cache is using a write-allocate mode,
1775 this option is unlikely to provide any performance gain.
1776
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001777config SECCOMP
1778 bool
1779 prompt "Enable seccomp to safely compute untrusted bytecode"
1780 ---help---
1781 This kernel feature is useful for number crunching applications
1782 that may need to compute untrusted bytecode during their
1783 execution. By using pipes or other transports made available to
1784 the process as file descriptors supporting the read/write
1785 syscalls, it's possible to isolate those applications in
1786 their own address space using seccomp. Once seccomp is
1787 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1788 and the task is only allowed to execute a few safe syscalls
1789 defined by each seccomp mode.
1790
Stefano Stabellini06e62952013-10-15 15:47:14 +00001791config SWIOTLB
1792 def_bool y
1793
1794config IOMMU_HELPER
1795 def_bool SWIOTLB
1796
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001797config XEN_DOM0
1798 def_bool y
1799 depends on XEN
1800
1801config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001802 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001803 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001804 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001805 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001806 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001807 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001808 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001809 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001810 help
1811 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1812
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813endmenu
1814
1815menu "Boot options"
1816
Grant Likely9eb8f672011-04-28 14:27:20 -06001817config USE_OF
1818 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001819 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001820 select OF
1821 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001822 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001823 help
1824 Include support for flattened device tree machine descriptions.
1825
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001826config ATAGS
1827 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1828 default y
1829 help
1830 This is the traditional way of passing data to the kernel at boot
1831 time. If you are solely relying on the flattened device tree (or
1832 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1833 to remove ATAGS support from your kernel binary. If unsure,
1834 leave this to y.
1835
1836config DEPRECATED_PARAM_STRUCT
1837 bool "Provide old way to pass kernel parameters"
1838 depends on ATAGS
1839 help
1840 This was deprecated in 2001 and announced to live on for 5 years.
1841 Some old boot loaders still use this way.
1842
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843# Compressed boot loader in ROM. Yes, we really want to ask about
1844# TEXT and BSS so we preserve their values in the config files.
1845config ZBOOT_ROM_TEXT
1846 hex "Compressed ROM boot loader base address"
1847 default "0"
1848 help
1849 The physical address at which the ROM-able zImage is to be
1850 placed in the target. Platforms which normally make use of
1851 ROM-able zImage formats normally set this to a suitable
1852 value in their defconfig file.
1853
1854 If ZBOOT_ROM is not enabled, this has no effect.
1855
1856config ZBOOT_ROM_BSS
1857 hex "Compressed ROM boot loader BSS address"
1858 default "0"
1859 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001860 The base address of an area of read/write memory in the target
1861 for the ROM-able zImage which must be available while the
1862 decompressor is running. It must be large enough to hold the
1863 entire decompressed kernel plus an additional 128 KiB.
1864 Platforms which normally make use of ROM-able zImage formats
1865 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001866
1867 If ZBOOT_ROM is not enabled, this has no effect.
1868
1869config ZBOOT_ROM
1870 bool "Compressed boot loader in ROM/flash"
1871 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001872 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873 help
1874 Say Y here if you intend to execute your compressed kernel image
1875 (zImage) directly from ROM or flash. If unsure, say N.
1876
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001877config ARM_APPENDED_DTB
1878 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001879 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001880 help
1881 With this option, the boot code will look for a device tree binary
1882 (DTB) appended to zImage
1883 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1884
1885 This is meant as a backward compatibility convenience for those
1886 systems with a bootloader that can't be upgraded to accommodate
1887 the documented boot protocol using a device tree.
1888
1889 Beware that there is very little in terms of protection against
1890 this option being confused by leftover garbage in memory that might
1891 look like a DTB header after a reboot if no actual DTB is appended
1892 to zImage. Do not leave this option active in a production kernel
1893 if you don't intend to always append a DTB. Proper passing of the
1894 location into r2 of a bootloader provided DTB is always preferable
1895 to this option.
1896
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001897config ARM_ATAG_DTB_COMPAT
1898 bool "Supplement the appended DTB with traditional ATAG information"
1899 depends on ARM_APPENDED_DTB
1900 help
1901 Some old bootloaders can't be updated to a DTB capable one, yet
1902 they provide ATAGs with memory configuration, the ramdisk address,
1903 the kernel cmdline string, etc. Such information is dynamically
1904 provided by the bootloader and can't always be stored in a static
1905 DTB. To allow a device tree enabled kernel to be used with such
1906 bootloaders, this option allows zImage to extract the information
1907 from the ATAG list and store it at run time into the appended DTB.
1908
Genoud Richardd0f34a112012-06-26 16:37:59 +01001909choice
1910 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1911 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1912
1913config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1914 bool "Use bootloader kernel arguments if available"
1915 help
1916 Uses the command-line options passed by the boot loader instead of
1917 the device tree bootargs property. If the boot loader doesn't provide
1918 any, the device tree bootargs property will be used.
1919
1920config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1921 bool "Extend with bootloader kernel arguments"
1922 help
1923 The command-line arguments provided by the boot loader will be
1924 appended to the the device tree bootargs property.
1925
1926endchoice
1927
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928config CMDLINE
1929 string "Default kernel command string"
1930 default ""
1931 help
1932 On some architectures (EBSA110 and CATS), there is currently no way
1933 for the boot loader to pass arguments to the kernel. For these
1934 architectures, you should supply some command-line options at build
1935 time by entering them here. As a minimum, you should specify the
1936 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1937
Victor Boivie4394c122011-05-04 17:07:55 +01001938choice
1939 prompt "Kernel command line type" if CMDLINE != ""
1940 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001941 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001942
1943config CMDLINE_FROM_BOOTLOADER
1944 bool "Use bootloader kernel arguments if available"
1945 help
1946 Uses the command-line options passed by the boot loader. If
1947 the boot loader doesn't provide any, the default kernel command
1948 string provided in CMDLINE will be used.
1949
1950config CMDLINE_EXTEND
1951 bool "Extend bootloader kernel arguments"
1952 help
1953 The command-line arguments provided by the boot loader will be
1954 appended to the default kernel command string.
1955
Alexander Holler92d20402010-02-16 19:04:53 +01001956config CMDLINE_FORCE
1957 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001958 help
1959 Always use the default kernel command string, even if the boot
1960 loader passes other arguments to the kernel.
1961 This is useful if you cannot or don't want to change the
1962 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001963endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001964
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965config XIP_KERNEL
1966 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001967 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001968 help
1969 Execute-In-Place allows the kernel to run from non-volatile storage
1970 directly addressable by the CPU, such as NOR flash. This saves RAM
1971 space since the text section of the kernel is not loaded from flash
1972 to RAM. Read-write sections, such as the data section and stack,
1973 are still copied to RAM. The XIP kernel is not compressed since
1974 it has to run directly from flash, so it will take more space to
1975 store it. The flash address used to link the kernel object files,
1976 and for storing it, is configuration dependent. Therefore, if you
1977 say Y here, you must know the proper physical address where to
1978 store the kernel image depending on your own flash memory usage.
1979
1980 Also note that the make target becomes "make xipImage" rather than
1981 "make zImage" or "make Image". The final kernel binary to put in
1982 ROM memory will be arch/arm/boot/xipImage.
1983
1984 If unsure, say N.
1985
1986config XIP_PHYS_ADDR
1987 hex "XIP Kernel Physical Location"
1988 depends on XIP_KERNEL
1989 default "0x00080000"
1990 help
1991 This is the physical address in your flash memory the kernel will
1992 be linked for and stored to. This address is dependent on your
1993 own flash usage.
1994
Richard Purdiec587e4a2007-02-06 21:29:00 +01001995config KEXEC
1996 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001997 depends on (!SMP || PM_SLEEP_SMP)
Arnd Bergmanncb1293e2015-05-26 15:40:44 +01001998 depends on !CPU_V7M
Dave Young2965faa2015-09-09 15:38:55 -07001999 select KEXEC_CORE
Richard Purdiec587e4a2007-02-06 21:29:00 +01002000 help
2001 kexec is a system call that implements the ability to shutdown your
2002 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002003 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002004 you can start any kernel with it, not just Linux.
2005
2006 It is an ongoing process to be certain the hardware in a machine
2007 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002008 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002009
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002010config ATAGS_PROC
2011 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002012 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002013 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002014 help
2015 Should the atags used to boot the kernel be exported in an "atags"
2016 file in procfs. Useful with kexec.
2017
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002018config CRASH_DUMP
2019 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002020 help
2021 Generate crash dump after being started by kexec. This should
2022 be normally only set in special crash dump kernels which are
2023 loaded in the main kernel with kexec-tools into a specially
2024 reserved region and then later executed after a crash by
2025 kdump/kexec. The crash dump kernel must be compiled to a
2026 memory address not used by the main kernel
2027
2028 For more details see Documentation/kdump/kdump.txt
2029
Eric Miaoe69edc792010-07-05 15:56:50 +02002030config AUTO_ZRELADDR
2031 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002032 help
2033 ZRELADDR is the physical address where the decompressed kernel
2034 image will be placed. If AUTO_ZRELADDR is selected, the address
2035 will be determined at run-time by masking the current IP with
2036 0xf8000000. This assumes the zImage being placed in the first 128MB
2037 from start of memory.
2038
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039endmenu
2040
Russell Kingac9d7ef2008-08-18 17:26:00 +01002041menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042
Linus Torvalds1da177e2005-04-16 15:20:36 -07002043source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044
Russell Kingac9d7ef2008-08-18 17:26:00 +01002045source "drivers/cpuidle/Kconfig"
2046
2047endmenu
2048
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049menu "Floating point emulation"
2050
2051comment "At least one emulation must be selected"
2052
2053config FPE_NWFPE
2054 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002055 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002056 ---help---
2057 Say Y to include the NWFPE floating point emulator in the kernel.
2058 This is necessary to run most binaries. Linux does not currently
2059 support floating point hardware so you need to say Y here even if
2060 your machine has an FPA or floating point co-processor podule.
2061
2062 You may say N here if you are going to load the Acorn FPEmulator
2063 early in the bootup.
2064
2065config FPE_NWFPE_XP
2066 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002067 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068 help
2069 Say Y to include 80-bit support in the kernel floating-point
2070 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2071 Note that gcc does not generate 80-bit operations by default,
2072 so in most cases this option only enlarges the size of the
2073 floating point emulator without any good reason.
2074
2075 You almost surely want to say N here.
2076
2077config FPE_FASTFPE
2078 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002079 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080 ---help---
2081 Say Y here to include the FAST floating point emulator in the kernel.
2082 This is an experimental much faster emulator which now also has full
2083 precision for the mantissa. It does not support any exceptions.
2084 It is very simple, and approximately 3-6 times faster than NWFPE.
2085
2086 It should be sufficient for most programs. It may be not suitable
2087 for scientific calculations, but you have to check this for yourself.
2088 If you do not feel you need a faster FP emulation you should better
2089 choose NWFPE.
2090
2091config VFP
2092 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002093 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002094 help
2095 Say Y to include VFP support code in the kernel. This is needed
2096 if your hardware includes a VFP unit.
2097
2098 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2099 release notes and additional status information.
2100
2101 Say N if your target does not have VFP hardware.
2102
Catalin Marinas25ebee02007-09-25 15:22:24 +01002103config VFPv3
2104 bool
2105 depends on VFP
2106 default y if CPU_V7
2107
Catalin Marinasb5872db2008-01-10 19:16:17 +01002108config NEON
2109 bool "Advanced SIMD (NEON) Extension support"
2110 depends on VFPv3 && CPU_V7
2111 help
2112 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2113 Extension.
2114
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002115config KERNEL_MODE_NEON
2116 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002117 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002118 help
2119 Say Y to include support for NEON in kernel mode.
2120
Linus Torvalds1da177e2005-04-16 15:20:36 -07002121endmenu
2122
2123menu "Userspace binary formats"
2124
2125source "fs/Kconfig.binfmt"
2126
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127endmenu
2128
2129menu "Power management options"
2130
Russell Kingeceab4a2005-11-15 11:31:41 +00002131source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132
Johannes Bergf4cb5702007-12-08 02:14:00 +01002133config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002134 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002135 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002136 def_bool y
2137
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002138config ARM_CPU_SUSPEND
2139 def_bool PM_SLEEP
2140
Sebastian Capella603fb422014-03-25 01:20:29 +01002141config ARCH_HIBERNATION_POSSIBLE
2142 bool
2143 depends on MMU
2144 default y if ARCH_SUSPEND_POSSIBLE
2145
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146endmenu
2147
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002148source "net/Kconfig"
2149
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002150source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151
Kumar Gala916f7432015-02-26 15:49:09 -06002152source "drivers/firmware/Kconfig"
2153
Linus Torvalds1da177e2005-04-16 15:20:36 -07002154source "fs/Kconfig"
2155
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156source "arch/arm/Kconfig.debug"
2157
2158source "security/Kconfig"
2159
2160source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002161if CRYPTO
2162source "arch/arm/crypto/Kconfig"
2163endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164
2165source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002166
2167source "arch/arm/kvm/Kconfig"