blob: 567c83380128c7f9015b23715d91ebe6315a3782 [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
Arnd Bergmannb8cd3372015-12-02 22:27:04 +0100513 select MULTI_IRQ_HANDLER
Russell King171b3f02013-09-12 21:24:42 +0100514 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100515 select PINCTRL
516 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200517 select PLAT_ORION_LEGACY
Arnd Bergmann5cdbe5d2015-12-02 22:27:05 +0100518 select SPARSE_IRQ
Saeed Bisharaedabd382009-08-06 15:12:43 +0300519 help
520 Support for the Marvell Dove SoC 88AP510
521
Russell King788c9702009-04-26 14:21:59 +0100522config ARCH_MV78XX0
523 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700524 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100525 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100526 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100527 select MVEBU_MBUS
Arnd Bergmannb8cd3372015-12-02 22:27:04 +0100528 select MULTI_IRQ_HANDLER
Russell Kingb1b3f492012-10-06 17:12:25 +0100529 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200530 select PLAT_ORION_LEGACY
Arnd Bergmann5cdbe5d2015-12-02 22:27:05 +0100531 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100532 help
533 Support for the following Marvell MV78xx0 series SoCs:
534 MV781x0, MV782x0.
535
536config ARCH_ORION5X
537 bool "Marvell Orion"
538 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700539 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100540 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100541 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100542 select MVEBU_MBUS
Arnd Bergmannb8cd3372015-12-02 22:27:04 +0100543 select MULTI_IRQ_HANDLER
Russell Kingb1b3f492012-10-06 17:12:25 +0100544 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200545 select PLAT_ORION_LEGACY
Benjamin Cama5be9fc22015-07-14 16:25:58 +0200546 select MULTI_IRQ_HANDLER
Arnd Bergmann5cdbe5d2015-12-02 22:27:05 +0100547 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100548 help
549 Support for the following Marvell Orion 5x series SoCs:
550 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
551 Orion-2 (5281), Orion-1-90 (6183).
552
553config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500554 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100555 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100556 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100557 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100558 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100559 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800560 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800561 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800562 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800563 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100564 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400565 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100566 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500567 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100568
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100569config ARCH_KS8695
570 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100571 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200572 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100573 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200574 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100575 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100576 help
577 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
578 System-on-Chip devices.
579
Russell King788c9702009-04-26 14:21:59 +0100580config ARCH_W90X900
581 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100582 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100583 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100584 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100585 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100586 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200587 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100588 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
589 At present, the w90x900 has been renamed nuc900, regarding
590 the ARM series product line, you can login the following
591 link address to know more.
592
593 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
594 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400595
Russell King93e22562012-10-12 14:20:52 +0100596config ARCH_LPC32XX
597 bool "NXP LPC32XX"
598 select ARCH_REQUIRE_GPIOLIB
599 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000600 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100601 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100602 select CPU_ARM926T
603 select GENERIC_CLOCKEVENTS
604 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100605 select USE_OF
606 help
607 Support for the NXP LPC32XX family of processors
608
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700610 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100611 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100612 select ARCH_MTD_XIP
613 select ARCH_REQUIRE_GPIOLIB
614 select ARM_CPU_SUSPEND if PM
615 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100616 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100617 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100618 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200619 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100620 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800621 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100622 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100623 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100624 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800625 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800626 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000627 help
eric miao2c8086a2007-09-11 19:13:17 -0700628 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
630config ARCH_RPC
631 bool "RiscPC"
Russell King868e87c2015-09-28 10:31:50 +0100632 depends on MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100634 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100635 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000636 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100637 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100638 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200639 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100640 select HAVE_PATA_PLATFORM
641 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600642 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400643 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700644 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100645 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 help
647 On the Acorn Risc-PC, Linux can support the internal IDE disk and
648 CD-ROM interface, serial and parallel port, and the floppy drive.
649
650config ARCH_SA1100
651 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100652 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700653 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100654 select ARCH_SPARSEMEM_ENABLE
655 select CLKDEV_LOOKUP
656 select CLKSRC_MMIO
657 select CPU_FREQ
658 select CPU_SA1100
659 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200660 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100661 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100662 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100663 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400664 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100665 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000666 help
667 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900669config ARCH_S3C24XX
670 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900671 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100672 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100673 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200674 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800675 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900676 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900677 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900678 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100679 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900680 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600681 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900682 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900684 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
685 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
686 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
687 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900688
Ben Dooksa08ab632008-10-21 14:06:39 +0100689config ARCH_S3C64XX
690 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900691 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200692 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100693 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100694 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100695 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200696 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900697 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900698 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800699 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900700 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900701 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900702 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100703 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700704 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100705 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100706 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100707 select S3C_DEV_NAND
708 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900709 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900710 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900711 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100712 help
713 Samsung S3C64XX series based systems
714
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100715config ARCH_DAVINCI
716 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100717 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700718 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100719 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700720 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100721 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100722 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100723 select HAVE_IDE
Sekhar Nori689e3312012-08-28 15:27:52 +0530724 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100725 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100726 help
727 Support for TI's DaVinci platform.
728
Tony Lindgrena0694862013-01-11 11:24:20 -0800729config ARCH_OMAP1
730 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600731 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100732 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800733 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100734 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200735 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100736 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100737 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800738 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800739 select HAVE_IDE
740 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700741 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800742 select NEED_MACH_IO_H if PCCARD
743 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700744 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100745 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800746 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800747
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748endchoice
749
Rob Herring387798b2012-09-06 13:41:12 -0500750menu "Multiple platform selection"
751 depends on ARCH_MULTIPLATFORM
752
753comment "CPU Core family selection"
754
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100755config ARCH_MULTI_V4
756 bool "ARMv4 based platforms (FA526)"
757 depends on !ARCH_MULTI_V6_V7
758 select ARCH_MULTI_V4_V5
759 select CPU_FA526
760
Rob Herring387798b2012-09-06 13:41:12 -0500761config ARCH_MULTI_V4T
762 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500763 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100764 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200765 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
766 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
767 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500768
769config ARCH_MULTI_V5
770 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500771 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100772 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100773 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200774 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
775 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500776
777config ARCH_MULTI_V4_V5
778 bool
779
780config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800781 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500782 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600783 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500784
785config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800786 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500787 default y
788 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100789 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600790 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500791
792config ARCH_MULTI_V6_V7
793 bool
Rob Herring9352b052014-01-31 15:36:10 -0600794 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500795
796config ARCH_MULTI_CPU_AUTO
797 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
798 select ARCH_MULTI_V5
799
800endmenu
801
Rob Herring05e2a3d2013-12-05 10:04:54 -0600802config ARCH_VIRT
803 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600804 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600805 select ARM_GIC
Jean-Philippe Brucker0b28f1d2015-10-01 13:47:18 +0100806 select ARM_GIC_V3
Rob Herring05e2a3d2013-12-05 10:04:54 -0600807 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600808 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600809
Russell Kingccf50e22010-03-15 19:03:06 +0000810#
811# This is sorted alphabetically by mach-* pathname. However, plat-*
812# Kconfigs may be included either alphabetically (according to the
813# plat- suffix) or along side the corresponding mach-* source.
814#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200815source "arch/arm/mach-mvebu/Kconfig"
816
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200817source "arch/arm/mach-alpine/Kconfig"
818
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100819source "arch/arm/mach-asm9260/Kconfig"
820
Russell King95b8f202010-01-14 11:43:54 +0000821source "arch/arm/mach-at91/Kconfig"
822
Anders Berg1d22924e2014-05-23 11:08:35 +0200823source "arch/arm/mach-axxia/Kconfig"
824
Christian Daudt8ac49e02012-11-19 09:46:10 -0800825source "arch/arm/mach-bcm/Kconfig"
826
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200827source "arch/arm/mach-berlin/Kconfig"
828
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829source "arch/arm/mach-clps711x/Kconfig"
830
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300831source "arch/arm/mach-cns3xxx/Kconfig"
832
Russell King95b8f202010-01-14 11:43:54 +0000833source "arch/arm/mach-davinci/Kconfig"
834
Baruch Siachdf8d7422015-01-14 10:40:30 +0200835source "arch/arm/mach-digicolor/Kconfig"
836
Russell King95b8f202010-01-14 11:43:54 +0000837source "arch/arm/mach-dove/Kconfig"
838
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000839source "arch/arm/mach-ep93xx/Kconfig"
840
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841source "arch/arm/mach-footbridge/Kconfig"
842
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200843source "arch/arm/mach-gemini/Kconfig"
844
Rob Herring387798b2012-09-06 13:41:12 -0500845source "arch/arm/mach-highbank/Kconfig"
846
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800847source "arch/arm/mach-hisi/Kconfig"
848
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849source "arch/arm/mach-integrator/Kconfig"
850
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100851source "arch/arm/mach-iop32x/Kconfig"
852
853source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854
Dan Williams285f5fa2006-12-07 02:59:39 +0100855source "arch/arm/mach-iop13xx/Kconfig"
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857source "arch/arm/mach-ixp4xx/Kconfig"
858
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400859source "arch/arm/mach-keystone/Kconfig"
860
Russell King95b8f202010-01-14 11:43:54 +0000861source "arch/arm/mach-ks8695/Kconfig"
862
Carlo Caione3b8f5032014-09-10 22:16:59 +0200863source "arch/arm/mach-meson/Kconfig"
864
Jonas Jensen17723fd32013-12-18 13:58:45 +0100865source "arch/arm/mach-moxart/Kconfig"
866
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200867source "arch/arm/mach-mv78xx0/Kconfig"
868
Shawn Guo3995eb82012-09-13 19:48:07 +0800869source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
Matthias Bruggerf682a212014-05-13 01:06:13 +0200871source "arch/arm/mach-mediatek/Kconfig"
872
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800873source "arch/arm/mach-mxs/Kconfig"
874
Russell King95b8f202010-01-14 11:43:54 +0000875source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800876
Russell King95b8f202010-01-14 11:43:54 +0000877source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000878
Daniel Tang9851ca52013-06-11 18:40:17 +1000879source "arch/arm/mach-nspire/Kconfig"
880
Tony Lindgrend48af152005-07-10 19:58:17 +0100881source "arch/arm/plat-omap/Kconfig"
882
883source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884
Tony Lindgren1dbae812005-11-10 14:26:51 +0000885source "arch/arm/mach-omap2/Kconfig"
886
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400887source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400888
Rob Herring387798b2012-09-06 13:41:12 -0500889source "arch/arm/mach-picoxcell/Kconfig"
890
Russell King95b8f202010-01-14 11:43:54 +0000891source "arch/arm/mach-pxa/Kconfig"
892source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893
Russell King95b8f202010-01-14 11:43:54 +0000894source "arch/arm/mach-mmp/Kconfig"
895
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600896source "arch/arm/mach-qcom/Kconfig"
897
Russell King95b8f202010-01-14 11:43:54 +0000898source "arch/arm/mach-realview/Kconfig"
899
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200900source "arch/arm/mach-rockchip/Kconfig"
901
Russell King95b8f202010-01-14 11:43:54 +0000902source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300903
Rob Herring387798b2012-09-06 13:41:12 -0500904source "arch/arm/mach-socfpga/Kconfig"
905
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100906source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100907
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100908source "arch/arm/mach-sti/Kconfig"
909
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900910source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911
Ben Dooks431107e2010-01-26 10:11:04 +0900912source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100913
Kukjin Kim170f4e42010-02-24 16:40:44 +0900914source "arch/arm/mach-s5pv210/Kconfig"
915
Kukjin Kim83014572011-11-06 13:54:56 +0900916source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500917source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900918
Russell King882d01f2010-03-02 23:40:15 +0000919source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
Maxime Ripard3b526342012-11-08 12:40:16 +0100921source "arch/arm/mach-sunxi/Kconfig"
922
Barry Song156a0992012-08-23 13:41:58 +0800923source "arch/arm/mach-prima2/Kconfig"
924
Erik Gillingc5f80062010-01-21 16:53:02 -0800925source "arch/arm/mach-tegra/Kconfig"
926
Russell King95b8f202010-01-14 11:43:54 +0000927source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900929source "arch/arm/mach-uniphier/Kconfig"
930
Russell King95b8f202010-01-14 11:43:54 +0000931source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932
933source "arch/arm/mach-versatile/Kconfig"
934
Russell Kingceade892010-02-11 21:44:53 +0000935source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000936source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000937
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300938source "arch/arm/mach-vt8500/Kconfig"
939
wanzongshun7ec80dd2008-12-03 03:55:38 +0100940source "arch/arm/mach-w90x900/Kconfig"
941
Jun Nieacede512015-04-28 17:18:05 +0800942source "arch/arm/mach-zx/Kconfig"
943
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600944source "arch/arm/mach-zynq/Kconfig"
945
Stefan Agner499f1642015-05-21 00:35:44 +0200946# ARMv7-M architecture
947config ARCH_EFM32
948 bool "Energy Micro efm32"
949 depends on ARM_SINGLE_ARMV7M
950 select ARCH_REQUIRE_GPIOLIB
951 help
952 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
953 processors.
954
955config ARCH_LPC18XX
956 bool "NXP LPC18xx/LPC43xx"
957 depends on ARM_SINGLE_ARMV7M
958 select ARCH_HAS_RESET_CONTROLLER
959 select ARM_AMBA
960 select CLKSRC_LPC32XX
961 select PINCTRL
962 help
963 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
964 high performance microcontrollers.
965
966config ARCH_STM32
967 bool "STMicrolectronics STM32"
968 depends on ARM_SINGLE_ARMV7M
969 select ARCH_HAS_RESET_CONTROLLER
970 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200971 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200972 select RESET_CONTROLLER
973 help
974 Support for STMicroelectronics STM32 processors.
975
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976# Definitions to make life easier
977config ARCH_ACORN
978 bool
979
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100980config PLAT_IOP
981 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700982 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100983
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400984config PLAT_ORION
985 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100986 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100987 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100988 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200989 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400990
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200991config PLAT_ORION_LEGACY
992 bool
993 select PLAT_ORION
994
Eric Miaobd5ce432009-01-20 12:06:01 +0800995config PLAT_PXA
996 bool
997
Russell Kingf4b8b312010-01-14 12:48:06 +0000998config PLAT_VERSATILE
999 bool
1000
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001001source "arch/arm/firmware/Kconfig"
1002
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003source arch/arm/mm/Kconfig
1004
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001005config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001006 bool "Enable iWMMXt support"
1007 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1008 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001009 help
1010 Enable support for iWMMXt context switching at run time if
1011 running on a CPU that supports it.
1012
eric miao52108642010-12-13 09:42:34 +01001013config MULTI_IRQ_HANDLER
1014 bool
1015 help
1016 Allow each machine to specify it's own IRQ handler at run time.
1017
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001018if !MMU
1019source "arch/arm/Kconfig-nommu"
1020endif
1021
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001022config PJ4B_ERRATA_4742
1023 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1024 depends on CPU_PJ4B && MACH_ARMADA_370
1025 default y
1026 help
1027 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1028 Event (WFE) IDLE states, a specific timing sensitivity exists between
1029 the retiring WFI/WFE instructions and the newly issued subsequent
1030 instructions. This sensitivity can result in a CPU hang scenario.
1031 Workaround:
1032 The software must insert either a Data Synchronization Barrier (DSB)
1033 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1034 instruction
1035
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001036config ARM_ERRATA_326103
1037 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1038 depends on CPU_V6
1039 help
1040 Executing a SWP instruction to read-only memory does not set bit 11
1041 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1042 treat the access as a read, preventing a COW from occurring and
1043 causing the faulting task to livelock.
1044
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001045config ARM_ERRATA_411920
1046 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001047 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001048 help
1049 Invalidation of the Instruction Cache operation can
1050 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1051 It does not affect the MPCore. This option enables the ARM Ltd.
1052 recommended workaround.
1053
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001054config ARM_ERRATA_430973
1055 bool "ARM errata: Stale prediction on replaced interworking branch"
1056 depends on CPU_V7
1057 help
1058 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001059 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001060 interworking branch is replaced with another code sequence at the
1061 same virtual address, whether due to self-modifying code or virtual
1062 to physical address re-mapping, Cortex-A8 does not recover from the
1063 stale interworking branch prediction. This results in Cortex-A8
1064 executing the new code sequence in the incorrect ARM or Thumb state.
1065 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1066 and also flushes the branch target cache at every context switch.
1067 Note that setting specific bits in the ACTLR register may not be
1068 available in non-secure mode.
1069
Catalin Marinas855c5512009-04-30 17:06:15 +01001070config ARM_ERRATA_458693
1071 bool "ARM errata: Processor deadlock when a false hazard is created"
1072 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001073 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001074 help
1075 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1076 erratum. For very specific sequences of memory operations, it is
1077 possible for a hazard condition intended for a cache line to instead
1078 be incorrectly associated with a different cache line. This false
1079 hazard might then cause a processor deadlock. The workaround enables
1080 the L1 caching of the NEON accesses and disables the PLD instruction
1081 in the ACTLR register. Note that setting specific bits in the ACTLR
1082 register may not be available in non-secure mode.
1083
Catalin Marinas0516e462009-04-30 17:06:20 +01001084config ARM_ERRATA_460075
1085 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1086 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001087 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001088 help
1089 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1090 erratum. Any asynchronous access to the L2 cache may encounter a
1091 situation in which recent store transactions to the L2 cache are lost
1092 and overwritten with stale memory contents from external memory. The
1093 workaround disables the write-allocate mode for the L2 cache via the
1094 ACTLR register. Note that setting specific bits in the ACTLR register
1095 may not be available in non-secure mode.
1096
Will Deacon9f050272010-09-14 09:51:43 +01001097config ARM_ERRATA_742230
1098 bool "ARM errata: DMB operation may be faulty"
1099 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001100 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001101 help
1102 This option enables the workaround for the 742230 Cortex-A9
1103 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1104 between two write operations may not ensure the correct visibility
1105 ordering of the two writes. This workaround sets a specific bit in
1106 the diagnostic register of the Cortex-A9 which causes the DMB
1107 instruction to behave as a DSB, ensuring the correct behaviour of
1108 the two writes.
1109
Will Deacona672e992010-09-14 09:53:02 +01001110config ARM_ERRATA_742231
1111 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1112 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001113 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001114 help
1115 This option enables the workaround for the 742231 Cortex-A9
1116 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1117 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1118 accessing some data located in the same cache line, may get corrupted
1119 data due to bad handling of the address hazard when the line gets
1120 replaced from one of the CPUs at the same time as another CPU is
1121 accessing it. This workaround sets specific bits in the diagnostic
1122 register of the Cortex-A9 which reduces the linefill issuing
1123 capabilities of the processor.
1124
Jon Medhurst69155792013-06-07 10:35:35 +01001125config ARM_ERRATA_643719
1126 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1127 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001128 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001129 help
1130 This option enables the workaround for the 643719 Cortex-A9 (prior to
1131 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1132 register returns zero when it should return one. The workaround
1133 corrects this value, ensuring cache maintenance operations which use
1134 it behave as intended and avoiding data corruption.
1135
Will Deaconcdf357f2010-08-05 11:20:51 +01001136config ARM_ERRATA_720789
1137 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001138 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001139 help
1140 This option enables the workaround for the 720789 Cortex-A9 (prior to
1141 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1142 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1143 As a consequence of this erratum, some TLB entries which should be
1144 invalidated are not, resulting in an incoherency in the system page
1145 tables. The workaround changes the TLB flushing routines to invalidate
1146 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001147
1148config ARM_ERRATA_743622
1149 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1150 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001151 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001152 help
1153 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001154 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001155 optimisation in the Cortex-A9 Store Buffer may lead to data
1156 corruption. This workaround sets a specific bit in the diagnostic
1157 register of the Cortex-A9 which disables the Store Buffer
1158 optimisation, preventing the defect from occurring. This has no
1159 visible impact on the overall performance or power consumption of the
1160 processor.
1161
Will Deacon9a27c272011-02-18 16:36:35 +01001162config ARM_ERRATA_751472
1163 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001164 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001165 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001166 help
1167 This option enables the workaround for the 751472 Cortex-A9 (prior
1168 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1169 completion of a following broadcasted operation if the second
1170 operation is received by a CPU before the ICIALLUIS has completed,
1171 potentially leading to corrupted entries in the cache or TLB.
1172
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001173config ARM_ERRATA_754322
1174 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1175 depends on CPU_V7
1176 help
1177 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1178 r3p*) erratum. A speculative memory access may cause a page table walk
1179 which starts prior to an ASID switch but completes afterwards. This
1180 can populate the micro-TLB with a stale entry which may be hit with
1181 the new ASID. This workaround places two dsb instructions in the mm
1182 switching code so that no page table walks can cross the ASID switch.
1183
Will Deacon5dab26af2011-03-04 12:38:54 +01001184config ARM_ERRATA_754327
1185 bool "ARM errata: no automatic Store Buffer drain"
1186 depends on CPU_V7 && SMP
1187 help
1188 This option enables the workaround for the 754327 Cortex-A9 (prior to
1189 r2p0) erratum. The Store Buffer does not have any automatic draining
1190 mechanism and therefore a livelock may occur if an external agent
1191 continuously polls a memory location waiting to observe an update.
1192 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1193 written polling loops from denying visibility of updates to memory.
1194
Catalin Marinas145e10e2011-08-15 11:04:41 +01001195config ARM_ERRATA_364296
1196 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001197 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001198 help
1199 This options enables the workaround for the 364296 ARM1136
1200 r0p2 erratum (possible cache data corruption with
1201 hit-under-miss enabled). It sets the undocumented bit 31 in
1202 the auxiliary control register and the FI bit in the control
1203 register, thus disabling hit-under-miss without putting the
1204 processor into full low interrupt latency mode. ARM11MPCore
1205 is not affected.
1206
Will Deaconf630c1b2011-09-15 11:45:15 +01001207config ARM_ERRATA_764369
1208 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1209 depends on CPU_V7 && SMP
1210 help
1211 This option enables the workaround for erratum 764369
1212 affecting Cortex-A9 MPCore with two or more processors (all
1213 current revisions). Under certain timing circumstances, a data
1214 cache line maintenance operation by MVA targeting an Inner
1215 Shareable memory region may fail to proceed up to either the
1216 Point of Coherency or to the Point of Unification of the
1217 system. This workaround adds a DSB instruction before the
1218 relevant cache maintenance functions and sets a specific bit
1219 in the diagnostic control register of the SCU.
1220
Simon Horman7253b852012-09-28 02:12:45 +01001221config ARM_ERRATA_775420
1222 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1223 depends on CPU_V7
1224 help
1225 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1226 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1227 operation aborts with MMU exception, it might cause the processor
1228 to deadlock. This workaround puts DSB before executing ISB if
1229 an abort may occur on cache maintenance.
1230
Catalin Marinas93dc6882013-03-26 23:35:04 +01001231config ARM_ERRATA_798181
1232 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1233 depends on CPU_V7 && SMP
1234 help
1235 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1236 adequately shooting down all use of the old entries. This
1237 option enables the Linux kernel workaround for this erratum
1238 which sends an IPI to the CPUs that are running the same ASID
1239 as the one being invalidated.
1240
Will Deacon84b65042013-08-20 17:29:55 +01001241config ARM_ERRATA_773022
1242 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1243 depends on CPU_V7
1244 help
1245 This option enables the workaround for the 773022 Cortex-A15
1246 (up to r0p4) erratum. In certain rare sequences of code, the
1247 loop buffer may deliver incorrect instructions. This
1248 workaround disables the loop buffer to avoid the erratum.
1249
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250endmenu
1251
1252source "arch/arm/common/Kconfig"
1253
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254menu "Bus support"
1255
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256config ISA
1257 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 help
1259 Find out whether you have ISA slots on your motherboard. ISA is the
1260 name of a bus system, i.e. the way the CPU talks to the other stuff
1261 inside your box. Other bus systems are PCI, EISA, MicroChannel
1262 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1263 newer boards don't support it. If you have ISA, say Y, otherwise N.
1264
Russell King065909b2006-01-04 15:44:16 +00001265# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266config ISA_DMA
1267 bool
Russell King065909b2006-01-04 15:44:16 +00001268 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269
Russell King065909b2006-01-04 15:44:16 +00001270# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001271config ISA_DMA_API
1272 bool
Al Viro5cae8412005-05-04 05:39:22 +01001273
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001275 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 help
1277 Find out whether you have a PCI motherboard. PCI is the name of a
1278 bus system, i.e. the way the CPU talks to the other stuff inside
1279 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1280 VESA. If you have PCI, say Y, otherwise N.
1281
Anton Vorontsov52882172010-04-19 13:20:49 +01001282config PCI_DOMAINS
1283 bool
1284 depends on PCI
1285
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001286config PCI_DOMAINS_GENERIC
1287 def_bool PCI_DOMAINS
1288
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001289config PCI_NANOENGINE
1290 bool "BSE nanoEngine PCI support"
1291 depends on SA1100_NANOENGINE
1292 help
1293 Enable PCI on the BSE nanoEngine board.
1294
Matthew Wilcox36e23592007-07-10 10:54:40 -06001295config PCI_SYSCALL
1296 def_bool PCI
1297
Mike Rapoporta0113a92007-11-25 08:55:34 +01001298config PCI_HOST_ITE8152
1299 bool
1300 depends on PCI && MACH_ARMCORE
1301 default y
1302 select DMABOUNCE
1303
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001305source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306
1307source "drivers/pcmcia/Kconfig"
1308
1309endmenu
1310
1311menu "Kernel Features"
1312
Dave Martin3b556582011-12-07 15:38:04 +00001313config HAVE_SMP
1314 bool
1315 help
1316 This option should be selected by machines which have an SMP-
1317 capable CPU.
1318
1319 The only effect of this option is to make the SMP-related
1320 options available to the user for configuration.
1321
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001323 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001324 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001325 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001326 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001327 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001328 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329 help
1330 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001331 a system with only one CPU, say N. If you have a system with more
1332 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333
Robert Graffham4a474152014-01-23 15:55:29 -08001334 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001336 you say Y here, the kernel will run on many, but not all,
1337 uniprocessor machines. On a uniprocessor machine, the kernel
1338 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
Paul Bolle395cf962011-08-15 02:02:26 +02001340 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001342 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001343
1344 If you don't know what to do here, say N.
1345
Russell Kingf00ec482010-09-04 10:47:48 +01001346config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001347 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001348 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001349 default y
1350 help
1351 SMP kernels contain instructions which fail on non-SMP processors.
1352 Enabling this option allows the kernel to modify itself to make
1353 these instructions safe. Disabling it allows about 1K of space
1354 savings.
1355
1356 If you don't know what to do here, say Y.
1357
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001358config ARM_CPU_TOPOLOGY
1359 bool "Support cpu topology definition"
1360 depends on SMP && CPU_V7
1361 default y
1362 help
1363 Support ARM cpu topology definition. The MPIDR register defines
1364 affinity between processors which is then used to describe the cpu
1365 topology of an ARM System.
1366
1367config SCHED_MC
1368 bool "Multi-core scheduler support"
1369 depends on ARM_CPU_TOPOLOGY
1370 help
1371 Multi-core scheduler support improves the CPU scheduler's decision
1372 making when dealing with multi-core CPU chips at a cost of slightly
1373 increased overhead in some places. If unsure say N here.
1374
1375config SCHED_SMT
1376 bool "SMT scheduler support"
1377 depends on ARM_CPU_TOPOLOGY
1378 help
1379 Improves the CPU scheduler's decision making when dealing with
1380 MultiThreading at a cost of slightly increased overhead in some
1381 places. If unsure say N here.
1382
Russell Kinga8cbcd92009-05-16 11:51:14 +01001383config HAVE_ARM_SCU
1384 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001385 help
1386 This option enables support for the ARM system coherency unit
1387
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001388config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001389 bool "Architected timer support"
1390 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001391 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001392 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001393 help
1394 This option enables support for the ARM architected timer
1395
Russell Kingf32f4ce2009-05-16 12:14:21 +01001396config HAVE_ARM_TWD
1397 bool
Rob Herringda4a6862013-02-06 21:17:47 -06001398 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001399 help
1400 This options enables support for the ARM timer and watchdog unit
1401
Nicolas Pitree8db2882012-04-12 02:45:22 -04001402config MCPM
1403 bool "Multi-Cluster Power Management"
1404 depends on CPU_V7 && SMP
1405 help
1406 This option provides the common power management infrastructure
1407 for (multi-)cluster based systems, such as big.LITTLE based
1408 systems.
1409
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001410config MCPM_QUAD_CLUSTER
1411 bool
1412 depends on MCPM
1413 help
1414 To avoid wasting resources unnecessarily, MCPM only supports up
1415 to 2 clusters by default.
1416 Platforms with 3 or 4 clusters that use MCPM must select this
1417 option to allow the additional clusters to be managed.
1418
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001419config BIG_LITTLE
1420 bool "big.LITTLE support (Experimental)"
1421 depends on CPU_V7 && SMP
1422 select MCPM
1423 help
1424 This option enables support selections for the big.LITTLE
1425 system architecture.
1426
1427config BL_SWITCHER
1428 bool "big.LITTLE switcher support"
1429 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001430 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001431 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001432 help
1433 The big.LITTLE "switcher" provides the core functionality to
1434 transparently handle transition between a cluster of A15's
1435 and a cluster of A7's in a big.LITTLE system.
1436
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001437config BL_SWITCHER_DUMMY_IF
1438 tristate "Simple big.LITTLE switcher user interface"
1439 depends on BL_SWITCHER && DEBUG_KERNEL
1440 help
1441 This is a simple and dummy char dev interface to control
1442 the big.LITTLE switcher core code. It is meant for
1443 debugging purposes only.
1444
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001445choice
1446 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001447 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001448 default VMSPLIT_3G
1449 help
1450 Select the desired split between kernel and user memory.
1451
1452 If you are not absolutely sure what you are doing, leave this
1453 option alone!
1454
1455 config VMSPLIT_3G
1456 bool "3G/1G user/kernel split"
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001457 config VMSPLIT_3G_OPT
1458 bool "3G/1G user/kernel split (for full 1G low memory)"
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001459 config VMSPLIT_2G
1460 bool "2G/2G user/kernel split"
1461 config VMSPLIT_1G
1462 bool "1G/3G user/kernel split"
1463endchoice
1464
1465config PAGE_OFFSET
1466 hex
Russell King006fa252014-02-26 19:40:46 +00001467 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001468 default 0x40000000 if VMSPLIT_1G
1469 default 0x80000000 if VMSPLIT_2G
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001470 default 0xB0000000 if VMSPLIT_3G_OPT
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001471 default 0xC0000000
1472
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473config NR_CPUS
1474 int "Maximum number of CPUs (2-32)"
1475 range 2 32
1476 depends on SMP
1477 default "4"
1478
Russell Kinga054a812005-11-02 22:24:33 +00001479config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001480 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001481 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001482 help
1483 Say Y here to experiment with turning CPUs off and on. CPUs
1484 can be controlled through /sys/devices/system/cpu.
1485
Will Deacon2bdd4242012-12-12 19:20:52 +00001486config ARM_PSCI
1487 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1488 depends on CPU_V7
Mark Rutlandbe120392015-07-31 15:46:19 +01001489 select ARM_PSCI_FW
Will Deacon2bdd4242012-12-12 19:20:52 +00001490 help
1491 Say Y here if you want Linux to communicate with system firmware
1492 implementing the PSCI specification for CPU-centric power
1493 management operations described in ARM document number ARM DEN
1494 0022A ("Power State Coordination Interface System Software on
1495 ARM processors").
1496
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001497# The GPIO number here must be sorted by descending number. In case of
1498# a multiplatform kernel, we just want the highest value required by the
1499# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001500config ARCH_NR_GPIO
1501 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001502 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1503 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001504 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1505 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001506 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001507 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001508 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001509 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001510 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001511 default 0
1512 help
1513 Maximum number of GPIOs in the system.
1514
1515 If unsure, leave the default value.
1516
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001517source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518
Russell Kingc9218b12013-04-27 23:31:10 +01001519config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001520 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001521 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001522 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001523 default 128 if SOC_AT91RM9200
Russell King47d84682013-09-10 23:47:55 +01001524 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001525
1526choice
Russell King47d84682013-09-10 23:47:55 +01001527 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001528 prompt "Timer frequency"
1529
1530config HZ_100
1531 bool "100 Hz"
1532
1533config HZ_200
1534 bool "200 Hz"
1535
1536config HZ_250
1537 bool "250 Hz"
1538
1539config HZ_300
1540 bool "300 Hz"
1541
1542config HZ_500
1543 bool "500 Hz"
1544
1545config HZ_1000
1546 bool "1000 Hz"
1547
1548endchoice
1549
1550config HZ
1551 int
Russell King47d84682013-09-10 23:47:55 +01001552 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001553 default 100 if HZ_100
1554 default 200 if HZ_200
1555 default 250 if HZ_250
1556 default 300 if HZ_300
1557 default 500 if HZ_500
1558 default 1000
1559
1560config SCHED_HRTICK
1561 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001562
Catalin Marinas16c79652009-07-24 12:33:02 +01001563config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001564 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001565 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001566 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001567 select AEABI
1568 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001569 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001570 help
1571 By enabling this option, the kernel will be compiled in
1572 Thumb-2 mode. A compiler/assembler that understand the unified
1573 ARM-Thumb syntax is needed.
1574
1575 If unsure, say N.
1576
Dave Martin6f685c52011-03-03 11:41:12 +01001577config THUMB2_AVOID_R_ARM_THM_JUMP11
1578 bool "Work around buggy Thumb-2 short branch relocations in gas"
1579 depends on THUMB2_KERNEL && MODULES
1580 default y
1581 help
1582 Various binutils versions can resolve Thumb-2 branches to
1583 locally-defined, preemptible global symbols as short-range "b.n"
1584 branch instructions.
1585
1586 This is a problem, because there's no guarantee the final
1587 destination of the symbol, or any candidate locations for a
1588 trampoline, are within range of the branch. For this reason, the
1589 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1590 relocation in modules at all, and it makes little sense to add
1591 support.
1592
1593 The symptom is that the kernel fails with an "unsupported
1594 relocation" error when loading some modules.
1595
1596 Until fixed tools are available, passing
1597 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1598 code which hits this problem, at the cost of a bit of extra runtime
1599 stack usage in some cases.
1600
1601 The problem is described in more detail at:
1602 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1603
1604 Only Thumb-2 kernels are affected.
1605
1606 Unless you are sure your tools don't have this problem, say Y.
1607
Catalin Marinas0becb082009-07-24 12:32:53 +01001608config ARM_ASM_UNIFIED
1609 bool
1610
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001611config AEABI
1612 bool "Use the ARM EABI to compile the kernel"
1613 help
1614 This option allows for the kernel to be compiled using the latest
1615 ARM ABI (aka EABI). This is only useful if you are using a user
1616 space environment that is also compiled with EABI.
1617
1618 Since there are major incompatibilities between the legacy ABI and
1619 EABI, especially with regard to structure member alignment, this
1620 option also changes the kernel syscall calling convention to
1621 disambiguate both ABIs and allow for backward compatibility support
1622 (selected with CONFIG_OABI_COMPAT).
1623
1624 To use this you need GCC version 4.0.0 or later.
1625
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001626config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001627 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001628 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001629 help
1630 This option preserves the old syscall interface along with the
1631 new (ARM EABI) one. It also provides a compatibility layer to
1632 intercept syscalls that have structure arguments which layout
1633 in memory differs between the legacy ABI and the new ARM EABI
1634 (only for non "thumb" binaries). This option adds a tiny
1635 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001636
1637 The seccomp filter system will not be available when this is
1638 selected, since there is no way yet to sensibly distinguish
1639 between calling conventions during filtering.
1640
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001641 If you know you'll be using only pure EABI user space then you
1642 can say N here. If this option is not selected and you attempt
1643 to execute a legacy ABI binary then the result will be
1644 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001645 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001646
Mel Gormaneb335752009-05-13 17:34:48 +01001647config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001648 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001649
Russell King05944d72006-11-30 20:43:51 +00001650config ARCH_SPARSEMEM_ENABLE
1651 bool
1652
Russell King07a2f732008-10-01 21:39:58 +01001653config ARCH_SPARSEMEM_DEFAULT
1654 def_bool ARCH_SPARSEMEM_ENABLE
1655
Russell King05944d72006-11-30 20:43:51 +00001656config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001657 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001658
Will Deacon7b7bf492011-05-19 13:21:14 +01001659config HAVE_ARCH_PFN_VALID
1660 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1661
Steve Capperb8cd51a2014-10-09 15:29:20 -07001662config HAVE_GENERIC_RCU_GUP
1663 def_bool y
1664 depends on ARM_LPAE
1665
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001666config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001667 bool "High Memory Support"
1668 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001669 help
1670 The address space of ARM processors is only 4 Gigabytes large
1671 and it has to accommodate user address space, kernel address
1672 space as well as some memory mapped IO. That means that, if you
1673 have a large amount of physical memory and/or IO, not all of the
1674 memory can be "permanently mapped" by the kernel. The physical
1675 memory that is not permanently mapped is called "high memory".
1676
1677 Depending on the selected kernel/user memory split, minimum
1678 vmalloc space and actual amount of RAM, you may not need this
1679 option which should result in a slightly faster kernel.
1680
1681 If unsure, say n.
1682
Russell King65cec8e2009-08-17 20:02:06 +01001683config HIGHPTE
Russell King9a431bd2015-06-25 10:44:08 +01001684 bool "Allocate 2nd-level pagetables from highmem" if EXPERT
Russell King65cec8e2009-08-17 20:02:06 +01001685 depends on HIGHMEM
Russell King9a431bd2015-06-25 10:44:08 +01001686 default y
Russell Kingb4d103d2015-06-25 10:49:45 +01001687 help
1688 The VM uses one page of physical memory for each page table.
1689 For systems with a lot of processes, this can use a lot of
1690 precious low memory, eventually leading to low memory being
1691 consumed by page tables. Setting this option will allow
1692 user-space 2nd level page tables to reside in high memory.
Russell King65cec8e2009-08-17 20:02:06 +01001693
Russell Kinga5e090a2015-08-19 20:40:41 +01001694config CPU_SW_DOMAIN_PAN
1695 bool "Enable use of CPU domains to implement privileged no-access"
1696 depends on MMU && !ARM_LPAE
Jamie Iles1b8873a2010-02-02 20:25:44 +01001697 default y
1698 help
Russell Kinga5e090a2015-08-19 20:40:41 +01001699 Increase kernel security by ensuring that normal kernel accesses
1700 are unable to access userspace addresses. This can help prevent
1701 use-after-free bugs becoming an exploitable privilege escalation
1702 by ensuring that magic values (such as LIST_POISON) will always
1703 fault when dereferenced.
1704
1705 CPUs with low-vector mappings use a best-efforts implementation.
1706 Their lower 1MB needs to remain accessible for the vectors, but
1707 the remainder of userspace will become appropriately inaccessible.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001708
1709config HW_PERF_EVENTS
Mark Rutlandfa8ad782015-07-06 12:23:53 +01001710 def_bool y
1711 depends on ARM_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001712
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001713config SYS_SUPPORTS_HUGETLBFS
1714 def_bool y
1715 depends on ARM_LPAE
1716
Catalin Marinas8d962502012-07-25 14:39:26 +01001717config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1718 def_bool y
1719 depends on ARM_LPAE
1720
Steven Capper4bfab202013-07-26 14:58:22 +01001721config ARCH_WANT_GENERAL_HUGETLB
1722 def_bool y
1723
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001724config ARM_MODULE_PLTS
1725 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1726 depends on MODULES
1727 help
1728 Allocate PLTs when loading modules so that jumps and calls whose
1729 targets are too far away for their relative offsets to be encoded
1730 in the instructions themselves can be bounced via veneers in the
1731 module's PLT. This allows modules to be allocated in the generic
1732 vmalloc area after the dedicated module memory area has been
1733 exhausted. The modules will use slightly more memory, but after
1734 rounding up to page size, the actual memory footprint is usually
1735 the same.
1736
1737 Say y if you are getting out of memory errors while loading modules
1738
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739source "mm/Kconfig"
1740
Magnus Dammc1b2d972010-07-05 10:00:11 +01001741config FORCE_MAX_ZONEORDER
Ulrich Hecht36d6c922015-08-14 15:51:06 +02001742 int "Maximum zone order"
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001743 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001744 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001745 default "11"
1746 help
1747 The kernel memory allocator divides physically contiguous memory
1748 blocks into "zones", where each zone is a power of two number of
1749 pages. This option selects the largest power of two that the kernel
1750 keeps in the memory allocator. If you need to allocate very large
1751 blocks of physically contiguous memory, then you may need to
1752 increase this value.
1753
1754 This config option is actually maximum order plus one. For example,
1755 a value of 11 means that the largest free memory block is 2^10 pages.
1756
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757config ALIGNMENT_TRAP
1758 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001759 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001761 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001763 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1765 address divisible by 4. On 32-bit ARM processors, these non-aligned
1766 fetch/store instructions will be emulated in software if you say
1767 here, which has a severe performance impact. This is necessary for
1768 correct operation of some network protocols. With an IP-only
1769 configuration it is safe to say N, otherwise say Y.
1770
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001771config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001772 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1773 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001774 default y if CPU_FEROCEON
1775 help
1776 Implement faster copy_to_user and clear_user methods for CPU
1777 cores where a 8-word STM instruction give significantly higher
1778 memory write throughput than a sequence of individual 32bit stores.
1779
1780 A possible side effect is a slight increase in scheduling latency
1781 between threads sharing the same address space if they invoke
1782 such copy operations with large buffers.
1783
1784 However, if the CPU data cache is using a write-allocate mode,
1785 this option is unlikely to provide any performance gain.
1786
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001787config SECCOMP
1788 bool
1789 prompt "Enable seccomp to safely compute untrusted bytecode"
1790 ---help---
1791 This kernel feature is useful for number crunching applications
1792 that may need to compute untrusted bytecode during their
1793 execution. By using pipes or other transports made available to
1794 the process as file descriptors supporting the read/write
1795 syscalls, it's possible to isolate those applications in
1796 their own address space using seccomp. Once seccomp is
1797 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1798 and the task is only allowed to execute a few safe syscalls
1799 defined by each seccomp mode.
1800
Stefano Stabellini06e62952013-10-15 15:47:14 +00001801config SWIOTLB
1802 def_bool y
1803
1804config IOMMU_HELPER
1805 def_bool SWIOTLB
1806
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001807config XEN_DOM0
1808 def_bool y
1809 depends on XEN
1810
1811config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001812 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001813 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001814 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001815 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001816 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001817 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001818 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001819 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001820 help
1821 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1822
Linus Torvalds1da177e2005-04-16 15:20:36 -07001823endmenu
1824
1825menu "Boot options"
1826
Grant Likely9eb8f672011-04-28 14:27:20 -06001827config USE_OF
1828 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001829 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001830 select OF
1831 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001832 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001833 help
1834 Include support for flattened device tree machine descriptions.
1835
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001836config ATAGS
1837 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1838 default y
1839 help
1840 This is the traditional way of passing data to the kernel at boot
1841 time. If you are solely relying on the flattened device tree (or
1842 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1843 to remove ATAGS support from your kernel binary. If unsure,
1844 leave this to y.
1845
1846config DEPRECATED_PARAM_STRUCT
1847 bool "Provide old way to pass kernel parameters"
1848 depends on ATAGS
1849 help
1850 This was deprecated in 2001 and announced to live on for 5 years.
1851 Some old boot loaders still use this way.
1852
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853# Compressed boot loader in ROM. Yes, we really want to ask about
1854# TEXT and BSS so we preserve their values in the config files.
1855config ZBOOT_ROM_TEXT
1856 hex "Compressed ROM boot loader base address"
1857 default "0"
1858 help
1859 The physical address at which the ROM-able zImage is to be
1860 placed in the target. Platforms which normally make use of
1861 ROM-able zImage formats normally set this to a suitable
1862 value in their defconfig file.
1863
1864 If ZBOOT_ROM is not enabled, this has no effect.
1865
1866config ZBOOT_ROM_BSS
1867 hex "Compressed ROM boot loader BSS address"
1868 default "0"
1869 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001870 The base address of an area of read/write memory in the target
1871 for the ROM-able zImage which must be available while the
1872 decompressor is running. It must be large enough to hold the
1873 entire decompressed kernel plus an additional 128 KiB.
1874 Platforms which normally make use of ROM-able zImage formats
1875 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001876
1877 If ZBOOT_ROM is not enabled, this has no effect.
1878
1879config ZBOOT_ROM
1880 bool "Compressed boot loader in ROM/flash"
1881 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001882 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883 help
1884 Say Y here if you intend to execute your compressed kernel image
1885 (zImage) directly from ROM or flash. If unsure, say N.
1886
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001887config ARM_APPENDED_DTB
1888 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001889 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001890 help
1891 With this option, the boot code will look for a device tree binary
1892 (DTB) appended to zImage
1893 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1894
1895 This is meant as a backward compatibility convenience for those
1896 systems with a bootloader that can't be upgraded to accommodate
1897 the documented boot protocol using a device tree.
1898
1899 Beware that there is very little in terms of protection against
1900 this option being confused by leftover garbage in memory that might
1901 look like a DTB header after a reboot if no actual DTB is appended
1902 to zImage. Do not leave this option active in a production kernel
1903 if you don't intend to always append a DTB. Proper passing of the
1904 location into r2 of a bootloader provided DTB is always preferable
1905 to this option.
1906
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001907config ARM_ATAG_DTB_COMPAT
1908 bool "Supplement the appended DTB with traditional ATAG information"
1909 depends on ARM_APPENDED_DTB
1910 help
1911 Some old bootloaders can't be updated to a DTB capable one, yet
1912 they provide ATAGs with memory configuration, the ramdisk address,
1913 the kernel cmdline string, etc. Such information is dynamically
1914 provided by the bootloader and can't always be stored in a static
1915 DTB. To allow a device tree enabled kernel to be used with such
1916 bootloaders, this option allows zImage to extract the information
1917 from the ATAG list and store it at run time into the appended DTB.
1918
Genoud Richardd0f34a112012-06-26 16:37:59 +01001919choice
1920 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1921 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1922
1923config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1924 bool "Use bootloader kernel arguments if available"
1925 help
1926 Uses the command-line options passed by the boot loader instead of
1927 the device tree bootargs property. If the boot loader doesn't provide
1928 any, the device tree bootargs property will be used.
1929
1930config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1931 bool "Extend with bootloader kernel arguments"
1932 help
1933 The command-line arguments provided by the boot loader will be
1934 appended to the the device tree bootargs property.
1935
1936endchoice
1937
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938config CMDLINE
1939 string "Default kernel command string"
1940 default ""
1941 help
1942 On some architectures (EBSA110 and CATS), there is currently no way
1943 for the boot loader to pass arguments to the kernel. For these
1944 architectures, you should supply some command-line options at build
1945 time by entering them here. As a minimum, you should specify the
1946 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1947
Victor Boivie4394c122011-05-04 17:07:55 +01001948choice
1949 prompt "Kernel command line type" if CMDLINE != ""
1950 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001951 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001952
1953config CMDLINE_FROM_BOOTLOADER
1954 bool "Use bootloader kernel arguments if available"
1955 help
1956 Uses the command-line options passed by the boot loader. If
1957 the boot loader doesn't provide any, the default kernel command
1958 string provided in CMDLINE will be used.
1959
1960config CMDLINE_EXTEND
1961 bool "Extend bootloader kernel arguments"
1962 help
1963 The command-line arguments provided by the boot loader will be
1964 appended to the default kernel command string.
1965
Alexander Holler92d20402010-02-16 19:04:53 +01001966config CMDLINE_FORCE
1967 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001968 help
1969 Always use the default kernel command string, even if the boot
1970 loader passes other arguments to the kernel.
1971 This is useful if you cannot or don't want to change the
1972 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001973endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001974
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975config XIP_KERNEL
1976 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001977 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978 help
1979 Execute-In-Place allows the kernel to run from non-volatile storage
1980 directly addressable by the CPU, such as NOR flash. This saves RAM
1981 space since the text section of the kernel is not loaded from flash
1982 to RAM. Read-write sections, such as the data section and stack,
1983 are still copied to RAM. The XIP kernel is not compressed since
1984 it has to run directly from flash, so it will take more space to
1985 store it. The flash address used to link the kernel object files,
1986 and for storing it, is configuration dependent. Therefore, if you
1987 say Y here, you must know the proper physical address where to
1988 store the kernel image depending on your own flash memory usage.
1989
1990 Also note that the make target becomes "make xipImage" rather than
1991 "make zImage" or "make Image". The final kernel binary to put in
1992 ROM memory will be arch/arm/boot/xipImage.
1993
1994 If unsure, say N.
1995
1996config XIP_PHYS_ADDR
1997 hex "XIP Kernel Physical Location"
1998 depends on XIP_KERNEL
1999 default "0x00080000"
2000 help
2001 This is the physical address in your flash memory the kernel will
2002 be linked for and stored to. This address is dependent on your
2003 own flash usage.
2004
Richard Purdiec587e4a2007-02-06 21:29:00 +01002005config KEXEC
2006 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002007 depends on (!SMP || PM_SLEEP_SMP)
Arnd Bergmanncb1293e2015-05-26 15:40:44 +01002008 depends on !CPU_V7M
Dave Young2965faa2015-09-09 15:38:55 -07002009 select KEXEC_CORE
Richard Purdiec587e4a2007-02-06 21:29:00 +01002010 help
2011 kexec is a system call that implements the ability to shutdown your
2012 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002013 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002014 you can start any kernel with it, not just Linux.
2015
2016 It is an ongoing process to be certain the hardware in a machine
2017 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002018 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002019
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002020config ATAGS_PROC
2021 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002022 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002023 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002024 help
2025 Should the atags used to boot the kernel be exported in an "atags"
2026 file in procfs. Useful with kexec.
2027
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002028config CRASH_DUMP
2029 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002030 help
2031 Generate crash dump after being started by kexec. This should
2032 be normally only set in special crash dump kernels which are
2033 loaded in the main kernel with kexec-tools into a specially
2034 reserved region and then later executed after a crash by
2035 kdump/kexec. The crash dump kernel must be compiled to a
2036 memory address not used by the main kernel
2037
2038 For more details see Documentation/kdump/kdump.txt
2039
Eric Miaoe69edc792010-07-05 15:56:50 +02002040config AUTO_ZRELADDR
2041 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002042 help
2043 ZRELADDR is the physical address where the decompressed kernel
2044 image will be placed. If AUTO_ZRELADDR is selected, the address
2045 will be determined at run-time by masking the current IP with
2046 0xf8000000. This assumes the zImage being placed in the first 128MB
2047 from start of memory.
2048
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049endmenu
2050
Russell Kingac9d7ef2008-08-18 17:26:00 +01002051menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002054
Russell Kingac9d7ef2008-08-18 17:26:00 +01002055source "drivers/cpuidle/Kconfig"
2056
2057endmenu
2058
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059menu "Floating point emulation"
2060
2061comment "At least one emulation must be selected"
2062
2063config FPE_NWFPE
2064 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002065 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066 ---help---
2067 Say Y to include the NWFPE floating point emulator in the kernel.
2068 This is necessary to run most binaries. Linux does not currently
2069 support floating point hardware so you need to say Y here even if
2070 your machine has an FPA or floating point co-processor podule.
2071
2072 You may say N here if you are going to load the Acorn FPEmulator
2073 early in the bootup.
2074
2075config FPE_NWFPE_XP
2076 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002077 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078 help
2079 Say Y to include 80-bit support in the kernel floating-point
2080 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2081 Note that gcc does not generate 80-bit operations by default,
2082 so in most cases this option only enlarges the size of the
2083 floating point emulator without any good reason.
2084
2085 You almost surely want to say N here.
2086
2087config FPE_FASTFPE
2088 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002089 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002090 ---help---
2091 Say Y here to include the FAST floating point emulator in the kernel.
2092 This is an experimental much faster emulator which now also has full
2093 precision for the mantissa. It does not support any exceptions.
2094 It is very simple, and approximately 3-6 times faster than NWFPE.
2095
2096 It should be sufficient for most programs. It may be not suitable
2097 for scientific calculations, but you have to check this for yourself.
2098 If you do not feel you need a faster FP emulation you should better
2099 choose NWFPE.
2100
2101config VFP
2102 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002103 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 help
2105 Say Y to include VFP support code in the kernel. This is needed
2106 if your hardware includes a VFP unit.
2107
2108 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2109 release notes and additional status information.
2110
2111 Say N if your target does not have VFP hardware.
2112
Catalin Marinas25ebee02007-09-25 15:22:24 +01002113config VFPv3
2114 bool
2115 depends on VFP
2116 default y if CPU_V7
2117
Catalin Marinasb5872db2008-01-10 19:16:17 +01002118config NEON
2119 bool "Advanced SIMD (NEON) Extension support"
2120 depends on VFPv3 && CPU_V7
2121 help
2122 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2123 Extension.
2124
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002125config KERNEL_MODE_NEON
2126 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002127 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002128 help
2129 Say Y to include support for NEON in kernel mode.
2130
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131endmenu
2132
2133menu "Userspace binary formats"
2134
2135source "fs/Kconfig.binfmt"
2136
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137endmenu
2138
2139menu "Power management options"
2140
Russell Kingeceab4a2005-11-15 11:31:41 +00002141source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142
Johannes Bergf4cb5702007-12-08 02:14:00 +01002143config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002144 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002145 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002146 def_bool y
2147
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002148config ARM_CPU_SUSPEND
2149 def_bool PM_SLEEP
2150
Sebastian Capella603fb422014-03-25 01:20:29 +01002151config ARCH_HIBERNATION_POSSIBLE
2152 bool
2153 depends on MMU
2154 default y if ARCH_SUSPEND_POSSIBLE
2155
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156endmenu
2157
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002158source "net/Kconfig"
2159
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002160source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161
Kumar Gala916f7432015-02-26 15:49:09 -06002162source "drivers/firmware/Kconfig"
2163
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164source "fs/Kconfig"
2165
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166source "arch/arm/Kconfig.debug"
2167
2168source "security/Kconfig"
2169
2170source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002171if CRYPTO
2172source "arch/arm/crypto/Kconfig"
2173endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174
2175source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002176
2177source "arch/arm/kvm/Kconfig"