blob: a1d3c82ccaeb6dc0445231d6e1cf54489f0ea6ba [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Catalin Marinas74634492012-07-30 14:41:09 -07004 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Kees Cook2b68f6c2015-04-14 15:48:00 -07005 select ARCH_HAS_ELF_RANDOMIZE
Mark Rutland3d067702012-10-30 12:13:42 +00006 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Russell King171b3f02013-09-12 21:24:42 +01007 select ARCH_HAVE_CUSTOM_GPIO_H
Riku Voipio957e3fa2014-12-12 16:57:44 -08008 select ARCH_HAS_GCOV_PROFILE_ALL
Mark Salterd7018842013-10-07 22:07:58 -04009 select ARCH_MIGHT_HAVE_PC_PARPORT
Peter Zijlstra4badad32014-06-06 19:53:16 +020010 select ARCH_SUPPORTS_ATOMIC_RMW
Kim Phillips017f1612013-11-06 05:15:24 +010011 select ARCH_USE_BUILTIN_BSWAP
Will Deacon0cbad9c2013-10-09 17:19:22 +010012 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010013 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010014 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010015 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010016 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacondce5c9e2013-12-17 19:50:16 +010017 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
Borislav Petkovb01aec92015-05-21 19:59:31 +020018 select EDAC_SUPPORT
19 select EDAC_ATOMIC_SCRUB
Laura Abbott36d0fd22014-10-09 15:26:42 -070020 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010021 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010023 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010024 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
Geert Uytterhoeven7c070052015-04-01 13:37:11 +010026 select GENERIC_IRQ_SHOW_LEVEL
Russell Kingb1b3f492012-10-06 17:12:25 +010027 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070028 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010029 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_STRNCPY_FROM_USER
31 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010032 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010033 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090034 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010035 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Arnd Bergmanncfeec792015-05-26 15:38:01 +010036 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32
37 select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32
Kees Cook91702172013-11-09 00:51:56 +010038 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010039 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010040 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010041 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010042 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010043 select HAVE_C_RECORDMCOUNT
44 select HAVE_DEBUG_KMEMLEAK
45 select HAVE_DMA_API_DEBUG
46 select HAVE_DMA_ATTRS
47 select HAVE_DMA_CONTIGUOUS if MMU
Arnd Bergmanncfeec792015-05-26 15:38:01 +010048 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32
Will Deacondce5c9e2013-12-17 19:50:16 +010049 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010050 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
51 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
52 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
53 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
55 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010056 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010057 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070058 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010059 select HAVE_KERNEL_LZMA
60 select HAVE_KERNEL_LZO
61 select HAVE_KERNEL_XZ
Arnd Bergmanncb1293e2015-05-26 15:40:44 +010062 select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080063 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010064 select HAVE_MEMBLOCK
Ard Biesheuvel7d485f62014-11-24 16:54:35 +010065 select HAVE_MOD_ARCH_SPECIFIC
Russell Kingb1b3f492012-10-06 17:12:25 +010066 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080067 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010068 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010069 select HAVE_PERF_REGS
70 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070071 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010072 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010073 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070074 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070075 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010076 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010077 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040078 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010079 select OLD_SIGACTION
80 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010081 select PERF_USE_VMALLOC
82 select RTC_LIB
83 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010084 # Above selects are sorted alphabetically; please add new ones
85 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 help
87 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000088 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000090 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 Europe. There is an ARM Linux project with a web page at
92 <http://www.arm.linux.org.uk/>.
93
Russell King74facff2011-06-02 11:16:22 +010094config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070095 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010096 bool
97
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020098config NEED_SG_DMA_LENGTH
99 bool
100
101config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200102 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100103 select ARM_HAS_SG_CHAIN
104 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200105
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900106if ARM_DMA_USE_IOMMU
107
108config ARM_DMA_IOMMU_ALIGNMENT
109 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
110 range 4 9
111 default 8
112 help
113 DMA mapping framework by default aligns all buffers to the smallest
114 PAGE_SIZE order which is greater than or equal to the requested buffer
115 size. This works well for buffers up to a few hundreds kilobytes, but
116 for larger buffers it just a waste of address space. Drivers which has
117 relatively small addressing window (like 64Mib) might run out of
118 virtual space with just a few allocations.
119
120 With this parameter you can specify the maximum PAGE_SIZE order for
121 DMA IOMMU buffers. Larger buffers will be aligned only to this
122 specified order. The order is expressed as a power of two multiplied
123 by the PAGE_SIZE.
124
125endif
126
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100127config MIGHT_HAVE_PCI
128 bool
129
Ralf Baechle75e71532007-02-09 17:08:58 +0000130config SYS_SUPPORTS_APM_EMULATION
131 bool
132
Linus Walleijbc581772009-09-15 17:30:37 +0100133config HAVE_TCM
134 bool
135 select GENERIC_ALLOCATOR
136
Russell Kinge119bff2010-01-10 17:23:29 +0000137config HAVE_PROC_CPU
138 bool
139
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700140config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000141 bool
Al Viro5ea81762007-02-11 15:41:31 +0000142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143config EISA
144 bool
145 ---help---
146 The Extended Industry Standard Architecture (EISA) bus was
147 developed as an open alternative to the IBM MicroChannel bus.
148
149 The EISA bus provided some of the features of the IBM MicroChannel
150 bus while maintaining backward compatibility with cards made for
151 the older ISA bus. The EISA bus saw limited use between 1988 and
152 1995 when it was made obsolete by the PCI bus.
153
154 Say Y here if you are building a kernel for an EISA-based machine.
155
156 Otherwise, say N.
157
158config SBUS
159 bool
160
Russell Kingf16fb1e2007-04-28 09:59:37 +0100161config STACKTRACE_SUPPORT
162 bool
163 default y
164
Nicolas Pitref76e9152008-04-24 01:31:46 -0400165config HAVE_LATENCYTOP_SUPPORT
166 bool
167 depends on !SMP
168 default y
169
Russell Kingf16fb1e2007-04-28 09:59:37 +0100170config LOCKDEP_SUPPORT
171 bool
172 default y
173
Russell King7ad1bcb2006-08-27 12:07:02 +0100174config TRACE_IRQFLAGS_SUPPORT
175 bool
Arnd Bergmanncb1293e2015-05-26 15:40:44 +0100176 default !CPU_V7M
Russell King7ad1bcb2006-08-27 12:07:02 +0100177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178config RWSEM_XCHGADD_ALGORITHM
179 bool
Will Deacon8a874112014-05-02 17:06:19 +0100180 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
David Howellsf0d1b0b2006-12-08 02:37:49 -0800182config ARCH_HAS_ILOG2_U32
183 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800184
185config ARCH_HAS_ILOG2_U64
186 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800187
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100188config ARCH_HAS_BANDGAP
189 bool
190
Stefan Agnera5f4c562015-08-13 00:01:52 +0100191config FIX_EARLYCON_MEM
192 def_bool y if MMU
193
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800194config GENERIC_HWEIGHT
195 bool
196 default y
197
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198config GENERIC_CALIBRATE_DELAY
199 bool
200 default y
201
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100202config ARCH_MAY_HAVE_PC_FDC
203 bool
204
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800205config ZONE_DMA
206 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800207
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800208config NEED_DMA_MAP_STATE
209 def_bool y
210
David A. Longc7edc9e2014-03-07 11:23:04 -0500211config ARCH_SUPPORTS_UPROBES
212 def_bool y
213
Rob Herring58af4a22012-03-20 14:33:01 -0500214config ARCH_HAS_DMA_SET_COHERENT_MASK
215 bool
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217config GENERIC_ISA_DMA
218 bool
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220config FIQ
221 bool
222
Rob Herring13a50452012-02-07 09:28:22 -0600223config NEED_RET_TO_USER
224 bool
225
Al Viro034d2f52005-12-19 16:27:59 -0500226config ARCH_MTD_XIP
227 bool
228
Hyok S. Choic760fc12006-03-27 15:18:50 +0100229config VECTORS_BASE
230 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900231 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100232 default DRAM_BASE if REMAP_VECTORS_TO_RAM
233 default 0x00000000
234 help
Russell King19accfd2013-07-04 11:40:32 +0100235 The base address of exception vectors. This must be two pages
236 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100237
Russell Kingdc21af92011-01-04 19:09:43 +0000238config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100239 bool "Patch physical to virtual translations at runtime" if EMBEDDED
240 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100241 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000242 depends on !ARCH_REALVIEW || !SPARSEMEM
243 help
Russell King111e9a52011-05-12 10:02:42 +0100244 Patch phys-to-virt and virt-to-phys translation functions at
245 boot and module load time according to the position of the
246 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000247
Russell King111e9a52011-05-12 10:02:42 +0100248 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100249 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000250
Russell Kingc1beced2011-08-10 10:23:45 +0100251 Only disable this option if you know that you do not require
252 this feature (eg, building a kernel for a single machine) and
253 you need to shrink the kernel to the minimal size.
254
Rob Herringc334bc12012-03-04 22:03:33 -0600255config NEED_MACH_IO_H
256 bool
257 help
258 Select this when mach/io.h is required to provide special
259 definitions for this platform. The need for mach/io.h should
260 be avoided when possible.
261
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400262config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400263 bool
Russell King111e9a52011-05-12 10:02:42 +0100264 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400265 Select this when mach/memory.h is required to provide special
266 definitions for this platform. The need for mach/memory.h should
267 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400268
269config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100270 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100271 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100272 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100273 default 0x00000000 if ARCH_EBSA110 || \
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100274 ARCH_FOOTBRIDGE || \
275 ARCH_INTEGRATOR || \
276 ARCH_IOP13XX || \
277 ARCH_KS8695 || \
278 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
279 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
280 default 0x20000000 if ARCH_S5PV210
281 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700282 default 0xc0000000 if ARCH_SA1100
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400283 help
284 Please provide the physical address corresponding to the
285 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000286
Simon Glass87e040b2011-08-16 23:44:26 +0100287config GENERIC_BUG
288 def_bool y
289 depends on BUG
290
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700291config PGTABLE_LEVELS
292 int
293 default 3 if ARM_LPAE
294 default 2
295
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296source "init/Kconfig"
297
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700298source "kernel/Kconfig.freezer"
299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300menu "System Type"
301
Hyok S. Choi3c427972009-07-24 12:35:00 +0100302config MMU
303 bool "MMU-based Paged Memory Management Support"
304 default y
305 help
306 Select if you want MMU-based virtualised addressing space
307 support by paged memory management. If unsure, say 'Y'.
308
Russell Kingccf50e22010-03-15 19:03:06 +0000309#
310# The "ARM system type" choice list is ordered alphabetically by option
311# text. Please add new entries in the option alphabetic order.
312#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313choice
314 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100315 default ARCH_VERSATILE if !MMU
316 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317
Rob Herring387798b2012-09-06 13:41:12 -0500318config ARCH_MULTIPLATFORM
319 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100320 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600321 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700322 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500323 select ARM_PATCH_PHYS_VIRT
324 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500325 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600326 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600327 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100328 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500329 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600330 select SPARSE_IRQ
331 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600332
Stefan Agner9c77bc42015-05-20 00:03:51 +0200333config ARM_SINGLE_ARMV7M
334 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
335 depends on !MMU
336 select ARCH_WANT_OPTIONAL_GPIOLIB
337 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200338 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200339 select CLKSRC_OF
340 select COMMON_CLK
341 select CPU_V7M
342 select GENERIC_CLOCKEVENTS
343 select NO_IOPORT_MAP
344 select SPARSE_IRQ
345 select USE_OF
346
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100347config ARCH_REALVIEW
348 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100349 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100350 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100351 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200352 select COMMON_CLK
353 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100354 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100355 select GPIO_PL061 if GPIOLIB
356 select ICST
357 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000358 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000359 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100360 help
361 This enables support for ARM Ltd RealView boards.
362
363config ARCH_VERSATILE
364 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100365 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100366 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100367 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100368 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100369 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100370 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900371 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000372 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000373 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100374 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000375 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100376 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100377 help
378 This enables support for ARM Ltd Versatile board.
379
Russell King93e22562012-10-12 14:20:52 +0100380config ARCH_CLPS711X
381 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400382 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400383 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400384 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100385 select COMMON_CLK
386 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400387 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400388 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400389 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100390 help
391 Support for Cirrus Logic 711x/721x/731x based boards.
392
Russell King788c9702009-04-26 14:21:59 +0100393config ARCH_GEMINI
394 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100395 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200396 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100397 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200398 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100399 help
400 Support for the Cortina Systems Gemini family SoCs
401
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402config ARCH_EBSA110
403 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100404 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000405 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100406 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600407 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400408 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700409 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 help
411 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000412 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 Ethernet interface, two PCMCIA sockets, two serial ports and a
414 parallel port.
415
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000416config ARCH_EP93XX
417 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100418 select ARCH_HAS_HOLES_MEMORYMODEL
419 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000420 select ARM_AMBA
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700421 select ARM_PATCH_PHYS_VIRT
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000422 select ARM_VIC
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700423 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100424 select CLKDEV_LOOKUP
Linus Walleij000bc172015-06-15 14:34:03 +0200425 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100426 select CPU_ARM920T
Linus Walleij000bc172015-06-15 14:34:03 +0200427 select GENERIC_CLOCKEVENTS
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000428 help
429 This enables support for the Cirrus EP93xx series of CPUs.
430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431config ARCH_FOOTBRIDGE
432 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000433 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000435 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200436 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600437 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400438 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000439 help
440 Support for systems based on the DC21285 companion chip
441 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100443config ARCH_NETX
444 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100445 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100446 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000447 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100448 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000449 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100450 This enables support for systems based on the Hilscher NetX Soc
451
Russell King3b938be2007-05-12 11:25:44 +0100452config ARCH_IOP13XX
453 bool "IOP13xx-based"
454 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100455 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400456 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600457 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100458 select PCI
459 select PLAT_IOP
460 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000461 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100462 help
463 Support for Intel's IOP13XX (XScale) family of processors.
464
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100465config ARCH_IOP32X
466 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100467 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100468 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000469 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200470 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600471 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100472 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100473 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000474 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100475 Support for Intel's 80219 and IOP32X (XScale) family of
476 processors.
477
478config ARCH_IOP33X
479 bool "IOP33x-based"
480 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100481 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000482 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200483 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600484 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100485 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100486 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100487 help
488 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
Russell King3b938be2007-05-12 11:25:44 +0100490config ARCH_IXP4XX
491 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100492 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500493 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100494 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100495 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100496 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000497 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100498 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100499 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100500 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600501 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200502 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100503 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100504 help
Russell King3b938be2007-05-12 11:25:44 +0100505 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100506
Saeed Bisharaedabd382009-08-06 15:12:43 +0300507config ARCH_DOVE
508 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300509 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100510 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300511 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100512 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100513 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100514 select PINCTRL
515 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200516 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300517 help
518 Support for the Marvell Dove SoC 88AP510
519
Russell King788c9702009-04-26 14:21:59 +0100520config ARCH_MV78XX0
521 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700522 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100523 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100524 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100525 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100526 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200527 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100528 help
529 Support for the following Marvell MV78xx0 series SoCs:
530 MV781x0, MV782x0.
531
532config ARCH_ORION5X
533 bool "Marvell Orion"
534 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700535 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100536 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100537 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100538 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100539 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200540 select PLAT_ORION_LEGACY
Benjamin Cama5be9fc22015-07-14 16:25:58 +0200541 select MULTI_IRQ_HANDLER
Russell King788c9702009-04-26 14:21:59 +0100542 help
543 Support for the following Marvell Orion 5x series SoCs:
544 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
545 Orion-2 (5281), Orion-1-90 (6183).
546
547config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500548 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100549 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100550 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100551 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100552 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100553 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800554 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800555 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800556 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800557 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100558 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400559 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100560 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500561 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100562
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100563config ARCH_KS8695
564 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100565 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200566 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100567 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200568 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100569 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100570 help
571 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
572 System-on-Chip devices.
573
Russell King788c9702009-04-26 14:21:59 +0100574config ARCH_W90X900
575 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100576 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100577 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100578 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100579 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100580 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200581 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100582 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
583 At present, the w90x900 has been renamed nuc900, regarding
584 the ARM series product line, you can login the following
585 link address to know more.
586
587 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
588 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400589
Russell King93e22562012-10-12 14:20:52 +0100590config ARCH_LPC32XX
591 bool "NXP LPC32XX"
592 select ARCH_REQUIRE_GPIOLIB
593 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000594 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100595 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100596 select CPU_ARM926T
597 select GENERIC_CLOCKEVENTS
598 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100599 select USE_OF
600 help
601 Support for the NXP LPC32XX family of processors
602
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700604 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100605 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100606 select ARCH_MTD_XIP
607 select ARCH_REQUIRE_GPIOLIB
608 select ARM_CPU_SUSPEND if PM
609 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100610 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100611 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100612 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200613 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100614 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800615 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100616 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100617 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100618 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800619 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800620 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000621 help
eric miao2c8086a2007-09-11 19:13:17 -0700622 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
624config ARCH_RPC
625 bool "RiscPC"
Russell King868e87c2015-09-28 10:31:50 +0100626 depends on MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100628 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100629 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000630 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100631 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100632 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200633 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100634 select HAVE_PATA_PLATFORM
635 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600636 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400637 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700638 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100639 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 help
641 On the Acorn Risc-PC, Linux can support the internal IDE disk and
642 CD-ROM interface, serial and parallel port, and the floppy drive.
643
644config ARCH_SA1100
645 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100646 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700647 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100648 select ARCH_SPARSEMEM_ENABLE
649 select CLKDEV_LOOKUP
650 select CLKSRC_MMIO
651 select CPU_FREQ
652 select CPU_SA1100
653 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200654 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100655 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100656 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100657 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400658 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100659 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000660 help
661 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900663config ARCH_S3C24XX
664 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900665 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100666 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100667 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200668 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800669 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900670 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900671 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900672 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100673 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900674 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600675 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900676 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900678 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
679 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
680 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
681 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900682
Ben Dooksa08ab632008-10-21 14:06:39 +0100683config ARCH_S3C64XX
684 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900685 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200686 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100687 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100688 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100689 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200690 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900691 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900692 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800693 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900694 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900695 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900696 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100697 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700698 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100699 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100700 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100701 select S3C_DEV_NAND
702 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900703 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900704 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900705 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100706 help
707 Samsung S3C64XX series based systems
708
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100709config ARCH_DAVINCI
710 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100711 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700712 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100713 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700714 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100715 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100716 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100717 select HAVE_IDE
Sekhar Nori689e3312012-08-28 15:27:52 +0530718 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100719 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100720 help
721 Support for TI's DaVinci platform.
722
Tony Lindgrena0694862013-01-11 11:24:20 -0800723config ARCH_OMAP1
724 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600725 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100726 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800727 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100728 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200729 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100730 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100731 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800732 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800733 select HAVE_IDE
734 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700735 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800736 select NEED_MACH_IO_H if PCCARD
737 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700738 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100739 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800740 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800741
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742endchoice
743
Rob Herring387798b2012-09-06 13:41:12 -0500744menu "Multiple platform selection"
745 depends on ARCH_MULTIPLATFORM
746
747comment "CPU Core family selection"
748
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100749config ARCH_MULTI_V4
750 bool "ARMv4 based platforms (FA526)"
751 depends on !ARCH_MULTI_V6_V7
752 select ARCH_MULTI_V4_V5
753 select CPU_FA526
754
Rob Herring387798b2012-09-06 13:41:12 -0500755config ARCH_MULTI_V4T
756 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500757 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100758 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200759 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
760 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
761 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500762
763config ARCH_MULTI_V5
764 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500765 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100766 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100767 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200768 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
769 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500770
771config ARCH_MULTI_V4_V5
772 bool
773
774config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800775 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500776 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600777 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500778
779config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800780 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500781 default y
782 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100783 select CPU_V7
Rob Herring90bc8ac72014-01-31 15:32:02 -0600784 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500785
786config ARCH_MULTI_V6_V7
787 bool
Rob Herring9352b052014-01-31 15:36:10 -0600788 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500789
790config ARCH_MULTI_CPU_AUTO
791 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
792 select ARCH_MULTI_V5
793
794endmenu
795
Rob Herring05e2a3d2013-12-05 10:04:54 -0600796config ARCH_VIRT
797 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600798 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600799 select ARM_GIC
Pavel Fedin0e2f91e2015-11-27 12:56:26 +0100800 select ARM_GIC_V2M if PCI_MSI
Jean-Philippe Brucker0b28f1d2015-10-01 13:47:18 +0100801 select ARM_GIC_V3
Rob Herring05e2a3d2013-12-05 10:04:54 -0600802 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600803 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600804
Russell Kingccf50e22010-03-15 19:03:06 +0000805#
806# This is sorted alphabetically by mach-* pathname. However, plat-*
807# Kconfigs may be included either alphabetically (according to the
808# plat- suffix) or along side the corresponding mach-* source.
809#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200810source "arch/arm/mach-mvebu/Kconfig"
811
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200812source "arch/arm/mach-alpine/Kconfig"
813
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100814source "arch/arm/mach-asm9260/Kconfig"
815
Russell King95b8f202010-01-14 11:43:54 +0000816source "arch/arm/mach-at91/Kconfig"
817
Anders Berg1d22924e2014-05-23 11:08:35 +0200818source "arch/arm/mach-axxia/Kconfig"
819
Christian Daudt8ac49e02012-11-19 09:46:10 -0800820source "arch/arm/mach-bcm/Kconfig"
821
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200822source "arch/arm/mach-berlin/Kconfig"
823
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824source "arch/arm/mach-clps711x/Kconfig"
825
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300826source "arch/arm/mach-cns3xxx/Kconfig"
827
Russell King95b8f202010-01-14 11:43:54 +0000828source "arch/arm/mach-davinci/Kconfig"
829
Baruch Siachdf8d7422015-01-14 10:40:30 +0200830source "arch/arm/mach-digicolor/Kconfig"
831
Russell King95b8f202010-01-14 11:43:54 +0000832source "arch/arm/mach-dove/Kconfig"
833
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000834source "arch/arm/mach-ep93xx/Kconfig"
835
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836source "arch/arm/mach-footbridge/Kconfig"
837
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200838source "arch/arm/mach-gemini/Kconfig"
839
Rob Herring387798b2012-09-06 13:41:12 -0500840source "arch/arm/mach-highbank/Kconfig"
841
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800842source "arch/arm/mach-hisi/Kconfig"
843
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844source "arch/arm/mach-integrator/Kconfig"
845
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100846source "arch/arm/mach-iop32x/Kconfig"
847
848source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849
Dan Williams285f5fa2006-12-07 02:59:39 +0100850source "arch/arm/mach-iop13xx/Kconfig"
851
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852source "arch/arm/mach-ixp4xx/Kconfig"
853
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400854source "arch/arm/mach-keystone/Kconfig"
855
Russell King95b8f202010-01-14 11:43:54 +0000856source "arch/arm/mach-ks8695/Kconfig"
857
Carlo Caione3b8f5032014-09-10 22:16:59 +0200858source "arch/arm/mach-meson/Kconfig"
859
Jonas Jensen17723fd32013-12-18 13:58:45 +0100860source "arch/arm/mach-moxart/Kconfig"
861
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200862source "arch/arm/mach-mv78xx0/Kconfig"
863
Shawn Guo3995eb82012-09-13 19:48:07 +0800864source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865
Matthias Bruggerf682a212014-05-13 01:06:13 +0200866source "arch/arm/mach-mediatek/Kconfig"
867
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800868source "arch/arm/mach-mxs/Kconfig"
869
Russell King95b8f202010-01-14 11:43:54 +0000870source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800871
Russell King95b8f202010-01-14 11:43:54 +0000872source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000873
Daniel Tang9851ca52013-06-11 18:40:17 +1000874source "arch/arm/mach-nspire/Kconfig"
875
Tony Lindgrend48af152005-07-10 19:58:17 +0100876source "arch/arm/plat-omap/Kconfig"
877
878source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879
Tony Lindgren1dbae812005-11-10 14:26:51 +0000880source "arch/arm/mach-omap2/Kconfig"
881
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400882source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400883
Rob Herring387798b2012-09-06 13:41:12 -0500884source "arch/arm/mach-picoxcell/Kconfig"
885
Russell King95b8f202010-01-14 11:43:54 +0000886source "arch/arm/mach-pxa/Kconfig"
887source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888
Russell King95b8f202010-01-14 11:43:54 +0000889source "arch/arm/mach-mmp/Kconfig"
890
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600891source "arch/arm/mach-qcom/Kconfig"
892
Russell King95b8f202010-01-14 11:43:54 +0000893source "arch/arm/mach-realview/Kconfig"
894
Heiko Stuebnerd63dc0512013-06-02 23:09:41 +0200895source "arch/arm/mach-rockchip/Kconfig"
896
Russell King95b8f202010-01-14 11:43:54 +0000897source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300898
Rob Herring387798b2012-09-06 13:41:12 -0500899source "arch/arm/mach-socfpga/Kconfig"
900
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100901source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100902
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100903source "arch/arm/mach-sti/Kconfig"
904
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900905source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906
Ben Dooks431107e2010-01-26 10:11:04 +0900907source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100908
Kukjin Kim170f4e42010-02-24 16:40:44 +0900909source "arch/arm/mach-s5pv210/Kconfig"
910
Kukjin Kim83014572011-11-06 13:54:56 +0900911source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500912source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900913
Russell King882d01f2010-03-02 23:40:15 +0000914source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915
Maxime Ripard3b526342012-11-08 12:40:16 +0100916source "arch/arm/mach-sunxi/Kconfig"
917
Barry Song156a0992012-08-23 13:41:58 +0800918source "arch/arm/mach-prima2/Kconfig"
919
Erik Gillingc5f80062010-01-21 16:53:02 -0800920source "arch/arm/mach-tegra/Kconfig"
921
Russell King95b8f202010-01-14 11:43:54 +0000922source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900924source "arch/arm/mach-uniphier/Kconfig"
925
Russell King95b8f202010-01-14 11:43:54 +0000926source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
928source "arch/arm/mach-versatile/Kconfig"
929
Russell Kingceade892010-02-11 21:44:53 +0000930source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000931source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000932
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300933source "arch/arm/mach-vt8500/Kconfig"
934
wanzongshun7ec80dd2008-12-03 03:55:38 +0100935source "arch/arm/mach-w90x900/Kconfig"
936
Jun Nieacede512015-04-28 17:18:05 +0800937source "arch/arm/mach-zx/Kconfig"
938
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600939source "arch/arm/mach-zynq/Kconfig"
940
Stefan Agner499f1642015-05-21 00:35:44 +0200941# ARMv7-M architecture
942config ARCH_EFM32
943 bool "Energy Micro efm32"
944 depends on ARM_SINGLE_ARMV7M
945 select ARCH_REQUIRE_GPIOLIB
946 help
947 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
948 processors.
949
950config ARCH_LPC18XX
951 bool "NXP LPC18xx/LPC43xx"
952 depends on ARM_SINGLE_ARMV7M
953 select ARCH_HAS_RESET_CONTROLLER
954 select ARM_AMBA
955 select CLKSRC_LPC32XX
956 select PINCTRL
957 help
958 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
959 high performance microcontrollers.
960
961config ARCH_STM32
962 bool "STMicrolectronics STM32"
963 depends on ARM_SINGLE_ARMV7M
964 select ARCH_HAS_RESET_CONTROLLER
965 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200966 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200967 select RESET_CONTROLLER
968 help
969 Support for STMicroelectronics STM32 processors.
970
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971# Definitions to make life easier
972config ARCH_ACORN
973 bool
974
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +0100975config PLAT_IOP
976 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700977 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +0100978
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400979config PLAT_ORION
980 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100981 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100982 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100983 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200984 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400985
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200986config PLAT_ORION_LEGACY
987 bool
988 select PLAT_ORION
989
Eric Miaobd5ce432009-01-20 12:06:01 +0800990config PLAT_PXA
991 bool
992
Russell Kingf4b8b312010-01-14 12:48:06 +0000993config PLAT_VERSATILE
994 bool
995
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900996source "arch/arm/firmware/Kconfig"
997
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998source arch/arm/mm/Kconfig
999
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001000config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001001 bool "Enable iWMMXt support"
1002 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1003 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001004 help
1005 Enable support for iWMMXt context switching at run time if
1006 running on a CPU that supports it.
1007
eric miao52108642010-12-13 09:42:34 +01001008config MULTI_IRQ_HANDLER
1009 bool
1010 help
1011 Allow each machine to specify it's own IRQ handler at run time.
1012
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001013if !MMU
1014source "arch/arm/Kconfig-nommu"
1015endif
1016
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001017config PJ4B_ERRATA_4742
1018 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1019 depends on CPU_PJ4B && MACH_ARMADA_370
1020 default y
1021 help
1022 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1023 Event (WFE) IDLE states, a specific timing sensitivity exists between
1024 the retiring WFI/WFE instructions and the newly issued subsequent
1025 instructions. This sensitivity can result in a CPU hang scenario.
1026 Workaround:
1027 The software must insert either a Data Synchronization Barrier (DSB)
1028 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1029 instruction
1030
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001031config ARM_ERRATA_326103
1032 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1033 depends on CPU_V6
1034 help
1035 Executing a SWP instruction to read-only memory does not set bit 11
1036 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1037 treat the access as a read, preventing a COW from occurring and
1038 causing the faulting task to livelock.
1039
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001040config ARM_ERRATA_411920
1041 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001042 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001043 help
1044 Invalidation of the Instruction Cache operation can
1045 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1046 It does not affect the MPCore. This option enables the ARM Ltd.
1047 recommended workaround.
1048
Catalin Marinas7ce236fc2009-04-30 17:06:09 +01001049config ARM_ERRATA_430973
1050 bool "ARM errata: Stale prediction on replaced interworking branch"
1051 depends on CPU_V7
1052 help
1053 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001054 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236fc2009-04-30 17:06:09 +01001055 interworking branch is replaced with another code sequence at the
1056 same virtual address, whether due to self-modifying code or virtual
1057 to physical address re-mapping, Cortex-A8 does not recover from the
1058 stale interworking branch prediction. This results in Cortex-A8
1059 executing the new code sequence in the incorrect ARM or Thumb state.
1060 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1061 and also flushes the branch target cache at every context switch.
1062 Note that setting specific bits in the ACTLR register may not be
1063 available in non-secure mode.
1064
Catalin Marinas855c5512009-04-30 17:06:15 +01001065config ARM_ERRATA_458693
1066 bool "ARM errata: Processor deadlock when a false hazard is created"
1067 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001068 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001069 help
1070 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1071 erratum. For very specific sequences of memory operations, it is
1072 possible for a hazard condition intended for a cache line to instead
1073 be incorrectly associated with a different cache line. This false
1074 hazard might then cause a processor deadlock. The workaround enables
1075 the L1 caching of the NEON accesses and disables the PLD instruction
1076 in the ACTLR register. Note that setting specific bits in the ACTLR
1077 register may not be available in non-secure mode.
1078
Catalin Marinas0516e462009-04-30 17:06:20 +01001079config ARM_ERRATA_460075
1080 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1081 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001082 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001083 help
1084 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1085 erratum. Any asynchronous access to the L2 cache may encounter a
1086 situation in which recent store transactions to the L2 cache are lost
1087 and overwritten with stale memory contents from external memory. The
1088 workaround disables the write-allocate mode for the L2 cache via the
1089 ACTLR register. Note that setting specific bits in the ACTLR register
1090 may not be available in non-secure mode.
1091
Will Deacon9f050272010-09-14 09:51:43 +01001092config ARM_ERRATA_742230
1093 bool "ARM errata: DMB operation may be faulty"
1094 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001095 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001096 help
1097 This option enables the workaround for the 742230 Cortex-A9
1098 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1099 between two write operations may not ensure the correct visibility
1100 ordering of the two writes. This workaround sets a specific bit in
1101 the diagnostic register of the Cortex-A9 which causes the DMB
1102 instruction to behave as a DSB, ensuring the correct behaviour of
1103 the two writes.
1104
Will Deacona672e992010-09-14 09:53:02 +01001105config ARM_ERRATA_742231
1106 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1107 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001108 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001109 help
1110 This option enables the workaround for the 742231 Cortex-A9
1111 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1112 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1113 accessing some data located in the same cache line, may get corrupted
1114 data due to bad handling of the address hazard when the line gets
1115 replaced from one of the CPUs at the same time as another CPU is
1116 accessing it. This workaround sets specific bits in the diagnostic
1117 register of the Cortex-A9 which reduces the linefill issuing
1118 capabilities of the processor.
1119
Jon Medhurst69155792013-06-07 10:35:35 +01001120config ARM_ERRATA_643719
1121 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1122 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001123 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001124 help
1125 This option enables the workaround for the 643719 Cortex-A9 (prior to
1126 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1127 register returns zero when it should return one. The workaround
1128 corrects this value, ensuring cache maintenance operations which use
1129 it behave as intended and avoiding data corruption.
1130
Will Deaconcdf357f2010-08-05 11:20:51 +01001131config ARM_ERRATA_720789
1132 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001133 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001134 help
1135 This option enables the workaround for the 720789 Cortex-A9 (prior to
1136 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1137 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1138 As a consequence of this erratum, some TLB entries which should be
1139 invalidated are not, resulting in an incoherency in the system page
1140 tables. The workaround changes the TLB flushing routines to invalidate
1141 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001142
1143config ARM_ERRATA_743622
1144 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1145 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001146 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001147 help
1148 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001149 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001150 optimisation in the Cortex-A9 Store Buffer may lead to data
1151 corruption. This workaround sets a specific bit in the diagnostic
1152 register of the Cortex-A9 which disables the Store Buffer
1153 optimisation, preventing the defect from occurring. This has no
1154 visible impact on the overall performance or power consumption of the
1155 processor.
1156
Will Deacon9a27c272011-02-18 16:36:35 +01001157config ARM_ERRATA_751472
1158 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001159 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001160 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001161 help
1162 This option enables the workaround for the 751472 Cortex-A9 (prior
1163 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1164 completion of a following broadcasted operation if the second
1165 operation is received by a CPU before the ICIALLUIS has completed,
1166 potentially leading to corrupted entries in the cache or TLB.
1167
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001168config ARM_ERRATA_754322
1169 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1170 depends on CPU_V7
1171 help
1172 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1173 r3p*) erratum. A speculative memory access may cause a page table walk
1174 which starts prior to an ASID switch but completes afterwards. This
1175 can populate the micro-TLB with a stale entry which may be hit with
1176 the new ASID. This workaround places two dsb instructions in the mm
1177 switching code so that no page table walks can cross the ASID switch.
1178
Will Deacon5dab26a2011-03-04 12:38:54 +01001179config ARM_ERRATA_754327
1180 bool "ARM errata: no automatic Store Buffer drain"
1181 depends on CPU_V7 && SMP
1182 help
1183 This option enables the workaround for the 754327 Cortex-A9 (prior to
1184 r2p0) erratum. The Store Buffer does not have any automatic draining
1185 mechanism and therefore a livelock may occur if an external agent
1186 continuously polls a memory location waiting to observe an update.
1187 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1188 written polling loops from denying visibility of updates to memory.
1189
Catalin Marinas145e10e2011-08-15 11:04:41 +01001190config ARM_ERRATA_364296
1191 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001192 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001193 help
1194 This options enables the workaround for the 364296 ARM1136
1195 r0p2 erratum (possible cache data corruption with
1196 hit-under-miss enabled). It sets the undocumented bit 31 in
1197 the auxiliary control register and the FI bit in the control
1198 register, thus disabling hit-under-miss without putting the
1199 processor into full low interrupt latency mode. ARM11MPCore
1200 is not affected.
1201
Will Deaconf630c1b2011-09-15 11:45:15 +01001202config ARM_ERRATA_764369
1203 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1204 depends on CPU_V7 && SMP
1205 help
1206 This option enables the workaround for erratum 764369
1207 affecting Cortex-A9 MPCore with two or more processors (all
1208 current revisions). Under certain timing circumstances, a data
1209 cache line maintenance operation by MVA targeting an Inner
1210 Shareable memory region may fail to proceed up to either the
1211 Point of Coherency or to the Point of Unification of the
1212 system. This workaround adds a DSB instruction before the
1213 relevant cache maintenance functions and sets a specific bit
1214 in the diagnostic control register of the SCU.
1215
Simon Horman7253b852012-09-28 02:12:45 +01001216config ARM_ERRATA_775420
1217 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1218 depends on CPU_V7
1219 help
1220 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1221 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1222 operation aborts with MMU exception, it might cause the processor
1223 to deadlock. This workaround puts DSB before executing ISB if
1224 an abort may occur on cache maintenance.
1225
Catalin Marinas93dc6882013-03-26 23:35:04 +01001226config ARM_ERRATA_798181
1227 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1228 depends on CPU_V7 && SMP
1229 help
1230 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1231 adequately shooting down all use of the old entries. This
1232 option enables the Linux kernel workaround for this erratum
1233 which sends an IPI to the CPUs that are running the same ASID
1234 as the one being invalidated.
1235
Will Deacon84b65042013-08-20 17:29:55 +01001236config ARM_ERRATA_773022
1237 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1238 depends on CPU_V7
1239 help
1240 This option enables the workaround for the 773022 Cortex-A15
1241 (up to r0p4) erratum. In certain rare sequences of code, the
1242 loop buffer may deliver incorrect instructions. This
1243 workaround disables the loop buffer to avoid the erratum.
1244
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245endmenu
1246
1247source "arch/arm/common/Kconfig"
1248
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249menu "Bus support"
1250
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251config ISA
1252 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 help
1254 Find out whether you have ISA slots on your motherboard. ISA is the
1255 name of a bus system, i.e. the way the CPU talks to the other stuff
1256 inside your box. Other bus systems are PCI, EISA, MicroChannel
1257 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1258 newer boards don't support it. If you have ISA, say Y, otherwise N.
1259
Russell King065909b2006-01-04 15:44:16 +00001260# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261config ISA_DMA
1262 bool
Russell King065909b2006-01-04 15:44:16 +00001263 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264
Russell King065909b2006-01-04 15:44:16 +00001265# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001266config ISA_DMA_API
1267 bool
Al Viro5cae8412005-05-04 05:39:22 +01001268
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001270 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 help
1272 Find out whether you have a PCI motherboard. PCI is the name of a
1273 bus system, i.e. the way the CPU talks to the other stuff inside
1274 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1275 VESA. If you have PCI, say Y, otherwise N.
1276
Anton Vorontsov52882172010-04-19 13:20:49 +01001277config PCI_DOMAINS
1278 bool
1279 depends on PCI
1280
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001281config PCI_DOMAINS_GENERIC
1282 def_bool PCI_DOMAINS
1283
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001284config PCI_NANOENGINE
1285 bool "BSE nanoEngine PCI support"
1286 depends on SA1100_NANOENGINE
1287 help
1288 Enable PCI on the BSE nanoEngine board.
1289
Matthew Wilcox36e23592007-07-10 10:54:40 -06001290config PCI_SYSCALL
1291 def_bool PCI
1292
Mike Rapoporta0113a92007-11-25 08:55:34 +01001293config PCI_HOST_ITE8152
1294 bool
1295 depends on PCI && MACH_ARMCORE
1296 default y
1297 select DMABOUNCE
1298
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001300source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301
1302source "drivers/pcmcia/Kconfig"
1303
1304endmenu
1305
1306menu "Kernel Features"
1307
Dave Martin3b556582011-12-07 15:38:04 +00001308config HAVE_SMP
1309 bool
1310 help
1311 This option should be selected by machines which have an SMP-
1312 capable CPU.
1313
1314 The only effect of this option is to make the SMP-related
1315 options available to the user for configuration.
1316
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001318 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001319 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001320 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001321 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001322 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001323 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 help
1325 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001326 a system with only one CPU, say N. If you have a system with more
1327 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328
Robert Graffham4a474152014-01-23 15:55:29 -08001329 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001331 you say Y here, the kernel will run on many, but not all,
1332 uniprocessor machines. On a uniprocessor machine, the kernel
1333 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334
Paul Bolle395cf962011-08-15 02:02:26 +02001335 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001337 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338
1339 If you don't know what to do here, say N.
1340
Russell Kingf00ec482010-09-04 10:47:48 +01001341config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001342 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001343 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001344 default y
1345 help
1346 SMP kernels contain instructions which fail on non-SMP processors.
1347 Enabling this option allows the kernel to modify itself to make
1348 these instructions safe. Disabling it allows about 1K of space
1349 savings.
1350
1351 If you don't know what to do here, say Y.
1352
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001353config ARM_CPU_TOPOLOGY
1354 bool "Support cpu topology definition"
1355 depends on SMP && CPU_V7
1356 default y
1357 help
1358 Support ARM cpu topology definition. The MPIDR register defines
1359 affinity between processors which is then used to describe the cpu
1360 topology of an ARM System.
1361
1362config SCHED_MC
1363 bool "Multi-core scheduler support"
1364 depends on ARM_CPU_TOPOLOGY
1365 help
1366 Multi-core scheduler support improves the CPU scheduler's decision
1367 making when dealing with multi-core CPU chips at a cost of slightly
1368 increased overhead in some places. If unsure say N here.
1369
1370config SCHED_SMT
1371 bool "SMT scheduler support"
1372 depends on ARM_CPU_TOPOLOGY
1373 help
1374 Improves the CPU scheduler's decision making when dealing with
1375 MultiThreading at a cost of slightly increased overhead in some
1376 places. If unsure say N here.
1377
Russell Kinga8cbcd92009-05-16 11:51:14 +01001378config HAVE_ARM_SCU
1379 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001380 help
1381 This option enables support for the ARM system coherency unit
1382
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001383config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001384 bool "Architected timer support"
1385 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001386 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001387 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001388 help
1389 This option enables support for the ARM architected timer
1390
Russell Kingf32f4ce2009-05-16 12:14:21 +01001391config HAVE_ARM_TWD
1392 bool
Rob Herringda4a6862013-02-06 21:17:47 -06001393 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001394 help
1395 This options enables support for the ARM timer and watchdog unit
1396
Nicolas Pitree8db2882012-04-12 02:45:22 -04001397config MCPM
1398 bool "Multi-Cluster Power Management"
1399 depends on CPU_V7 && SMP
1400 help
1401 This option provides the common power management infrastructure
1402 for (multi-)cluster based systems, such as big.LITTLE based
1403 systems.
1404
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001405config MCPM_QUAD_CLUSTER
1406 bool
1407 depends on MCPM
1408 help
1409 To avoid wasting resources unnecessarily, MCPM only supports up
1410 to 2 clusters by default.
1411 Platforms with 3 or 4 clusters that use MCPM must select this
1412 option to allow the additional clusters to be managed.
1413
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001414config BIG_LITTLE
1415 bool "big.LITTLE support (Experimental)"
1416 depends on CPU_V7 && SMP
1417 select MCPM
1418 help
1419 This option enables support selections for the big.LITTLE
1420 system architecture.
1421
1422config BL_SWITCHER
1423 bool "big.LITTLE switcher support"
Arnd Bergmann6c044fe2015-11-19 15:49:23 +01001424 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU && ARM_GIC
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001425 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001426 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001427 help
1428 The big.LITTLE "switcher" provides the core functionality to
1429 transparently handle transition between a cluster of A15's
1430 and a cluster of A7's in a big.LITTLE system.
1431
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001432config BL_SWITCHER_DUMMY_IF
1433 tristate "Simple big.LITTLE switcher user interface"
1434 depends on BL_SWITCHER && DEBUG_KERNEL
1435 help
1436 This is a simple and dummy char dev interface to control
1437 the big.LITTLE switcher core code. It is meant for
1438 debugging purposes only.
1439
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001440choice
1441 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001442 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001443 default VMSPLIT_3G
1444 help
1445 Select the desired split between kernel and user memory.
1446
1447 If you are not absolutely sure what you are doing, leave this
1448 option alone!
1449
1450 config VMSPLIT_3G
1451 bool "3G/1G user/kernel split"
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001452 config VMSPLIT_3G_OPT
1453 bool "3G/1G user/kernel split (for full 1G low memory)"
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001454 config VMSPLIT_2G
1455 bool "2G/2G user/kernel split"
1456 config VMSPLIT_1G
1457 bool "1G/3G user/kernel split"
1458endchoice
1459
1460config PAGE_OFFSET
1461 hex
Russell King006fa252014-02-26 19:40:46 +00001462 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001463 default 0x40000000 if VMSPLIT_1G
1464 default 0x80000000 if VMSPLIT_2G
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001465 default 0xB0000000 if VMSPLIT_3G_OPT
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001466 default 0xC0000000
1467
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468config NR_CPUS
1469 int "Maximum number of CPUs (2-32)"
1470 range 2 32
1471 depends on SMP
1472 default "4"
1473
Russell Kinga054a812005-11-02 22:24:33 +00001474config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001475 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001476 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001477 help
1478 Say Y here to experiment with turning CPUs off and on. CPUs
1479 can be controlled through /sys/devices/system/cpu.
1480
Will Deacon2bdd4242012-12-12 19:20:52 +00001481config ARM_PSCI
1482 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1483 depends on CPU_V7
Mark Rutlandbe120392015-07-31 15:46:19 +01001484 select ARM_PSCI_FW
Will Deacon2bdd4242012-12-12 19:20:52 +00001485 help
1486 Say Y here if you want Linux to communicate with system firmware
1487 implementing the PSCI specification for CPU-centric power
1488 management operations described in ARM document number ARM DEN
1489 0022A ("Power State Coordination Interface System Software on
1490 ARM processors").
1491
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001492# The GPIO number here must be sorted by descending number. In case of
1493# a multiplatform kernel, we just want the highest value required by the
1494# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001495config ARCH_NR_GPIO
1496 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001497 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1498 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001499 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1500 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001501 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001502 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001503 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001504 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001505 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001506 default 0
1507 help
1508 Maximum number of GPIOs in the system.
1509
1510 If unsure, leave the default value.
1511
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001512source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001513
Russell Kingc9218b12013-04-27 23:31:10 +01001514config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001515 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001516 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001517 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001518 default 128 if SOC_AT91RM9200
Russell King47d84682013-09-10 23:47:55 +01001519 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001520
1521choice
Russell King47d84682013-09-10 23:47:55 +01001522 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001523 prompt "Timer frequency"
1524
1525config HZ_100
1526 bool "100 Hz"
1527
1528config HZ_200
1529 bool "200 Hz"
1530
1531config HZ_250
1532 bool "250 Hz"
1533
1534config HZ_300
1535 bool "300 Hz"
1536
1537config HZ_500
1538 bool "500 Hz"
1539
1540config HZ_1000
1541 bool "1000 Hz"
1542
1543endchoice
1544
1545config HZ
1546 int
Russell King47d84682013-09-10 23:47:55 +01001547 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001548 default 100 if HZ_100
1549 default 200 if HZ_200
1550 default 250 if HZ_250
1551 default 300 if HZ_300
1552 default 500 if HZ_500
1553 default 1000
1554
1555config SCHED_HRTICK
1556 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001557
Catalin Marinas16c79652009-07-24 12:33:02 +01001558config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001559 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001560 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001561 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001562 select AEABI
1563 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001564 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001565 help
1566 By enabling this option, the kernel will be compiled in
1567 Thumb-2 mode. A compiler/assembler that understand the unified
1568 ARM-Thumb syntax is needed.
1569
1570 If unsure, say N.
1571
Dave Martin6f685c52011-03-03 11:41:12 +01001572config THUMB2_AVOID_R_ARM_THM_JUMP11
1573 bool "Work around buggy Thumb-2 short branch relocations in gas"
1574 depends on THUMB2_KERNEL && MODULES
1575 default y
1576 help
1577 Various binutils versions can resolve Thumb-2 branches to
1578 locally-defined, preemptible global symbols as short-range "b.n"
1579 branch instructions.
1580
1581 This is a problem, because there's no guarantee the final
1582 destination of the symbol, or any candidate locations for a
1583 trampoline, are within range of the branch. For this reason, the
1584 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1585 relocation in modules at all, and it makes little sense to add
1586 support.
1587
1588 The symptom is that the kernel fails with an "unsupported
1589 relocation" error when loading some modules.
1590
1591 Until fixed tools are available, passing
1592 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1593 code which hits this problem, at the cost of a bit of extra runtime
1594 stack usage in some cases.
1595
1596 The problem is described in more detail at:
1597 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1598
1599 Only Thumb-2 kernels are affected.
1600
1601 Unless you are sure your tools don't have this problem, say Y.
1602
Catalin Marinas0becb082009-07-24 12:32:53 +01001603config ARM_ASM_UNIFIED
1604 bool
1605
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001606config AEABI
1607 bool "Use the ARM EABI to compile the kernel"
1608 help
1609 This option allows for the kernel to be compiled using the latest
1610 ARM ABI (aka EABI). This is only useful if you are using a user
1611 space environment that is also compiled with EABI.
1612
1613 Since there are major incompatibilities between the legacy ABI and
1614 EABI, especially with regard to structure member alignment, this
1615 option also changes the kernel syscall calling convention to
1616 disambiguate both ABIs and allow for backward compatibility support
1617 (selected with CONFIG_OABI_COMPAT).
1618
1619 To use this you need GCC version 4.0.0 or later.
1620
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001621config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001622 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001623 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001624 help
1625 This option preserves the old syscall interface along with the
1626 new (ARM EABI) one. It also provides a compatibility layer to
1627 intercept syscalls that have structure arguments which layout
1628 in memory differs between the legacy ABI and the new ARM EABI
1629 (only for non "thumb" binaries). This option adds a tiny
1630 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001631
1632 The seccomp filter system will not be available when this is
1633 selected, since there is no way yet to sensibly distinguish
1634 between calling conventions during filtering.
1635
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001636 If you know you'll be using only pure EABI user space then you
1637 can say N here. If this option is not selected and you attempt
1638 to execute a legacy ABI binary then the result will be
1639 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001640 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001641
Mel Gormaneb335752009-05-13 17:34:48 +01001642config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001643 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001644
Russell King05944d72006-11-30 20:43:51 +00001645config ARCH_SPARSEMEM_ENABLE
1646 bool
1647
Russell King07a2f732008-10-01 21:39:58 +01001648config ARCH_SPARSEMEM_DEFAULT
1649 def_bool ARCH_SPARSEMEM_ENABLE
1650
Russell King05944d72006-11-30 20:43:51 +00001651config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001652 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001653
Will Deacon7b7bf492011-05-19 13:21:14 +01001654config HAVE_ARCH_PFN_VALID
1655 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1656
Steve Capperb8cd51a2014-10-09 15:29:20 -07001657config HAVE_GENERIC_RCU_GUP
1658 def_bool y
1659 depends on ARM_LPAE
1660
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001661config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001662 bool "High Memory Support"
1663 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001664 help
1665 The address space of ARM processors is only 4 Gigabytes large
1666 and it has to accommodate user address space, kernel address
1667 space as well as some memory mapped IO. That means that, if you
1668 have a large amount of physical memory and/or IO, not all of the
1669 memory can be "permanently mapped" by the kernel. The physical
1670 memory that is not permanently mapped is called "high memory".
1671
1672 Depending on the selected kernel/user memory split, minimum
1673 vmalloc space and actual amount of RAM, you may not need this
1674 option which should result in a slightly faster kernel.
1675
1676 If unsure, say n.
1677
Russell King65cec8e2009-08-17 20:02:06 +01001678config HIGHPTE
Russell King9a431bd2015-06-25 10:44:08 +01001679 bool "Allocate 2nd-level pagetables from highmem" if EXPERT
Russell King65cec8e2009-08-17 20:02:06 +01001680 depends on HIGHMEM
Russell King9a431bd2015-06-25 10:44:08 +01001681 default y
Russell Kingb4d103d2015-06-25 10:49:45 +01001682 help
1683 The VM uses one page of physical memory for each page table.
1684 For systems with a lot of processes, this can use a lot of
1685 precious low memory, eventually leading to low memory being
1686 consumed by page tables. Setting this option will allow
1687 user-space 2nd level page tables to reside in high memory.
Russell King65cec8e2009-08-17 20:02:06 +01001688
Russell Kinga5e090a2015-08-19 20:40:41 +01001689config CPU_SW_DOMAIN_PAN
1690 bool "Enable use of CPU domains to implement privileged no-access"
1691 depends on MMU && !ARM_LPAE
Jamie Iles1b8873a2010-02-02 20:25:44 +01001692 default y
1693 help
Russell Kinga5e090a2015-08-19 20:40:41 +01001694 Increase kernel security by ensuring that normal kernel accesses
1695 are unable to access userspace addresses. This can help prevent
1696 use-after-free bugs becoming an exploitable privilege escalation
1697 by ensuring that magic values (such as LIST_POISON) will always
1698 fault when dereferenced.
1699
1700 CPUs with low-vector mappings use a best-efforts implementation.
1701 Their lower 1MB needs to remain accessible for the vectors, but
1702 the remainder of userspace will become appropriately inaccessible.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703
1704config HW_PERF_EVENTS
Mark Rutlandfa8ad782015-07-06 12:23:53 +01001705 def_bool y
1706 depends on ARM_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001707
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001708config SYS_SUPPORTS_HUGETLBFS
1709 def_bool y
1710 depends on ARM_LPAE
1711
Catalin Marinas8d962502012-07-25 14:39:26 +01001712config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1713 def_bool y
1714 depends on ARM_LPAE
1715
Steven Capper4bfab202013-07-26 14:58:22 +01001716config ARCH_WANT_GENERAL_HUGETLB
1717 def_bool y
1718
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001719config ARM_MODULE_PLTS
1720 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1721 depends on MODULES
1722 help
1723 Allocate PLTs when loading modules so that jumps and calls whose
1724 targets are too far away for their relative offsets to be encoded
1725 in the instructions themselves can be bounced via veneers in the
1726 module's PLT. This allows modules to be allocated in the generic
1727 vmalloc area after the dedicated module memory area has been
1728 exhausted. The modules will use slightly more memory, but after
1729 rounding up to page size, the actual memory footprint is usually
1730 the same.
1731
1732 Say y if you are getting out of memory errors while loading modules
1733
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734source "mm/Kconfig"
1735
Magnus Dammc1b2d972010-07-05 10:00:11 +01001736config FORCE_MAX_ZONEORDER
Ulrich Hecht36d6c922015-08-14 15:51:06 +02001737 int "Maximum zone order"
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001738 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001739 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001740 default "11"
1741 help
1742 The kernel memory allocator divides physically contiguous memory
1743 blocks into "zones", where each zone is a power of two number of
1744 pages. This option selects the largest power of two that the kernel
1745 keeps in the memory allocator. If you need to allocate very large
1746 blocks of physically contiguous memory, then you may need to
1747 increase this value.
1748
1749 This config option is actually maximum order plus one. For example,
1750 a value of 11 means that the largest free memory block is 2^10 pages.
1751
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752config ALIGNMENT_TRAP
1753 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001754 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001755 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001756 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001758 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1760 address divisible by 4. On 32-bit ARM processors, these non-aligned
1761 fetch/store instructions will be emulated in software if you say
1762 here, which has a severe performance impact. This is necessary for
1763 correct operation of some network protocols. With an IP-only
1764 configuration it is safe to say N, otherwise say Y.
1765
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001766config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001767 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1768 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001769 default y if CPU_FEROCEON
1770 help
1771 Implement faster copy_to_user and clear_user methods for CPU
1772 cores where a 8-word STM instruction give significantly higher
1773 memory write throughput than a sequence of individual 32bit stores.
1774
1775 A possible side effect is a slight increase in scheduling latency
1776 between threads sharing the same address space if they invoke
1777 such copy operations with large buffers.
1778
1779 However, if the CPU data cache is using a write-allocate mode,
1780 this option is unlikely to provide any performance gain.
1781
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001782config SECCOMP
1783 bool
1784 prompt "Enable seccomp to safely compute untrusted bytecode"
1785 ---help---
1786 This kernel feature is useful for number crunching applications
1787 that may need to compute untrusted bytecode during their
1788 execution. By using pipes or other transports made available to
1789 the process as file descriptors supporting the read/write
1790 syscalls, it's possible to isolate those applications in
1791 their own address space using seccomp. Once seccomp is
1792 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1793 and the task is only allowed to execute a few safe syscalls
1794 defined by each seccomp mode.
1795
Stefano Stabellini06e62952013-10-15 15:47:14 +00001796config SWIOTLB
1797 def_bool y
1798
1799config IOMMU_HELPER
1800 def_bool SWIOTLB
1801
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001802config XEN_DOM0
1803 def_bool y
1804 depends on XEN
1805
1806config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001807 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001808 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001809 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001810 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001811 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001812 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001813 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001814 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001815 help
1816 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1817
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818endmenu
1819
1820menu "Boot options"
1821
Grant Likely9eb8f672011-04-28 14:27:20 -06001822config USE_OF
1823 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001824 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001825 select OF
1826 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001827 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001828 help
1829 Include support for flattened device tree machine descriptions.
1830
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001831config ATAGS
1832 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1833 default y
1834 help
1835 This is the traditional way of passing data to the kernel at boot
1836 time. If you are solely relying on the flattened device tree (or
1837 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1838 to remove ATAGS support from your kernel binary. If unsure,
1839 leave this to y.
1840
1841config DEPRECATED_PARAM_STRUCT
1842 bool "Provide old way to pass kernel parameters"
1843 depends on ATAGS
1844 help
1845 This was deprecated in 2001 and announced to live on for 5 years.
1846 Some old boot loaders still use this way.
1847
Linus Torvalds1da177e2005-04-16 15:20:36 -07001848# Compressed boot loader in ROM. Yes, we really want to ask about
1849# TEXT and BSS so we preserve their values in the config files.
1850config ZBOOT_ROM_TEXT
1851 hex "Compressed ROM boot loader base address"
1852 default "0"
1853 help
1854 The physical address at which the ROM-able zImage is to be
1855 placed in the target. Platforms which normally make use of
1856 ROM-able zImage formats normally set this to a suitable
1857 value in their defconfig file.
1858
1859 If ZBOOT_ROM is not enabled, this has no effect.
1860
1861config ZBOOT_ROM_BSS
1862 hex "Compressed ROM boot loader BSS address"
1863 default "0"
1864 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001865 The base address of an area of read/write memory in the target
1866 for the ROM-able zImage which must be available while the
1867 decompressor is running. It must be large enough to hold the
1868 entire decompressed kernel plus an additional 128 KiB.
1869 Platforms which normally make use of ROM-able zImage formats
1870 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871
1872 If ZBOOT_ROM is not enabled, this has no effect.
1873
1874config ZBOOT_ROM
1875 bool "Compressed boot loader in ROM/flash"
1876 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001877 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001878 help
1879 Say Y here if you intend to execute your compressed kernel image
1880 (zImage) directly from ROM or flash. If unsure, say N.
1881
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001882config ARM_APPENDED_DTB
1883 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001884 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001885 help
1886 With this option, the boot code will look for a device tree binary
1887 (DTB) appended to zImage
1888 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1889
1890 This is meant as a backward compatibility convenience for those
1891 systems with a bootloader that can't be upgraded to accommodate
1892 the documented boot protocol using a device tree.
1893
1894 Beware that there is very little in terms of protection against
1895 this option being confused by leftover garbage in memory that might
1896 look like a DTB header after a reboot if no actual DTB is appended
1897 to zImage. Do not leave this option active in a production kernel
1898 if you don't intend to always append a DTB. Proper passing of the
1899 location into r2 of a bootloader provided DTB is always preferable
1900 to this option.
1901
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001902config ARM_ATAG_DTB_COMPAT
1903 bool "Supplement the appended DTB with traditional ATAG information"
1904 depends on ARM_APPENDED_DTB
1905 help
1906 Some old bootloaders can't be updated to a DTB capable one, yet
1907 they provide ATAGs with memory configuration, the ramdisk address,
1908 the kernel cmdline string, etc. Such information is dynamically
1909 provided by the bootloader and can't always be stored in a static
1910 DTB. To allow a device tree enabled kernel to be used with such
1911 bootloaders, this option allows zImage to extract the information
1912 from the ATAG list and store it at run time into the appended DTB.
1913
Genoud Richardd0f34a12012-06-26 16:37:59 +01001914choice
1915 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1916 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1917
1918config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1919 bool "Use bootloader kernel arguments if available"
1920 help
1921 Uses the command-line options passed by the boot loader instead of
1922 the device tree bootargs property. If the boot loader doesn't provide
1923 any, the device tree bootargs property will be used.
1924
1925config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1926 bool "Extend with bootloader kernel arguments"
1927 help
1928 The command-line arguments provided by the boot loader will be
1929 appended to the the device tree bootargs property.
1930
1931endchoice
1932
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933config CMDLINE
1934 string "Default kernel command string"
1935 default ""
1936 help
1937 On some architectures (EBSA110 and CATS), there is currently no way
1938 for the boot loader to pass arguments to the kernel. For these
1939 architectures, you should supply some command-line options at build
1940 time by entering them here. As a minimum, you should specify the
1941 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1942
Victor Boivie4394c122011-05-04 17:07:55 +01001943choice
1944 prompt "Kernel command line type" if CMDLINE != ""
1945 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001946 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001947
1948config CMDLINE_FROM_BOOTLOADER
1949 bool "Use bootloader kernel arguments if available"
1950 help
1951 Uses the command-line options passed by the boot loader. If
1952 the boot loader doesn't provide any, the default kernel command
1953 string provided in CMDLINE will be used.
1954
1955config CMDLINE_EXTEND
1956 bool "Extend bootloader kernel arguments"
1957 help
1958 The command-line arguments provided by the boot loader will be
1959 appended to the default kernel command string.
1960
Alexander Holler92d20402010-02-16 19:04:53 +01001961config CMDLINE_FORCE
1962 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001963 help
1964 Always use the default kernel command string, even if the boot
1965 loader passes other arguments to the kernel.
1966 This is useful if you cannot or don't want to change the
1967 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001968endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001969
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970config XIP_KERNEL
1971 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001972 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 help
1974 Execute-In-Place allows the kernel to run from non-volatile storage
1975 directly addressable by the CPU, such as NOR flash. This saves RAM
1976 space since the text section of the kernel is not loaded from flash
1977 to RAM. Read-write sections, such as the data section and stack,
1978 are still copied to RAM. The XIP kernel is not compressed since
1979 it has to run directly from flash, so it will take more space to
1980 store it. The flash address used to link the kernel object files,
1981 and for storing it, is configuration dependent. Therefore, if you
1982 say Y here, you must know the proper physical address where to
1983 store the kernel image depending on your own flash memory usage.
1984
1985 Also note that the make target becomes "make xipImage" rather than
1986 "make zImage" or "make Image". The final kernel binary to put in
1987 ROM memory will be arch/arm/boot/xipImage.
1988
1989 If unsure, say N.
1990
1991config XIP_PHYS_ADDR
1992 hex "XIP Kernel Physical Location"
1993 depends on XIP_KERNEL
1994 default "0x00080000"
1995 help
1996 This is the physical address in your flash memory the kernel will
1997 be linked for and stored to. This address is dependent on your
1998 own flash usage.
1999
Richard Purdiec587e4a2007-02-06 21:29:00 +01002000config KEXEC
2001 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002002 depends on (!SMP || PM_SLEEP_SMP)
Arnd Bergmanncb1293e2015-05-26 15:40:44 +01002003 depends on !CPU_V7M
Dave Young2965faa2015-09-09 15:38:55 -07002004 select KEXEC_CORE
Richard Purdiec587e4a2007-02-06 21:29:00 +01002005 help
2006 kexec is a system call that implements the ability to shutdown your
2007 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002008 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002009 you can start any kernel with it, not just Linux.
2010
2011 It is an ongoing process to be certain the hardware in a machine
2012 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002013 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002014
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002015config ATAGS_PROC
2016 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002017 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002018 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002019 help
2020 Should the atags used to boot the kernel be exported in an "atags"
2021 file in procfs. Useful with kexec.
2022
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002023config CRASH_DUMP
2024 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002025 help
2026 Generate crash dump after being started by kexec. This should
2027 be normally only set in special crash dump kernels which are
2028 loaded in the main kernel with kexec-tools into a specially
2029 reserved region and then later executed after a crash by
2030 kdump/kexec. The crash dump kernel must be compiled to a
2031 memory address not used by the main kernel
2032
2033 For more details see Documentation/kdump/kdump.txt
2034
Eric Miaoe69edc792010-07-05 15:56:50 +02002035config AUTO_ZRELADDR
2036 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002037 help
2038 ZRELADDR is the physical address where the decompressed kernel
2039 image will be placed. If AUTO_ZRELADDR is selected, the address
2040 will be determined at run-time by masking the current IP with
2041 0xf8000000. This assumes the zImage being placed in the first 128MB
2042 from start of memory.
2043
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044endmenu
2045
Russell Kingac9d7ef2008-08-18 17:26:00 +01002046menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049
Russell Kingac9d7ef2008-08-18 17:26:00 +01002050source "drivers/cpuidle/Kconfig"
2051
2052endmenu
2053
Linus Torvalds1da177e2005-04-16 15:20:36 -07002054menu "Floating point emulation"
2055
2056comment "At least one emulation must be selected"
2057
2058config FPE_NWFPE
2059 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002060 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061 ---help---
2062 Say Y to include the NWFPE floating point emulator in the kernel.
2063 This is necessary to run most binaries. Linux does not currently
2064 support floating point hardware so you need to say Y here even if
2065 your machine has an FPA or floating point co-processor podule.
2066
2067 You may say N here if you are going to load the Acorn FPEmulator
2068 early in the bootup.
2069
2070config FPE_NWFPE_XP
2071 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002072 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073 help
2074 Say Y to include 80-bit support in the kernel floating-point
2075 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2076 Note that gcc does not generate 80-bit operations by default,
2077 so in most cases this option only enlarges the size of the
2078 floating point emulator without any good reason.
2079
2080 You almost surely want to say N here.
2081
2082config FPE_FASTFPE
2083 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002084 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085 ---help---
2086 Say Y here to include the FAST floating point emulator in the kernel.
2087 This is an experimental much faster emulator which now also has full
2088 precision for the mantissa. It does not support any exceptions.
2089 It is very simple, and approximately 3-6 times faster than NWFPE.
2090
2091 It should be sufficient for most programs. It may be not suitable
2092 for scientific calculations, but you have to check this for yourself.
2093 If you do not feel you need a faster FP emulation you should better
2094 choose NWFPE.
2095
2096config VFP
2097 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002098 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099 help
2100 Say Y to include VFP support code in the kernel. This is needed
2101 if your hardware includes a VFP unit.
2102
2103 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2104 release notes and additional status information.
2105
2106 Say N if your target does not have VFP hardware.
2107
Catalin Marinas25ebee02007-09-25 15:22:24 +01002108config VFPv3
2109 bool
2110 depends on VFP
2111 default y if CPU_V7
2112
Catalin Marinasb5872db2008-01-10 19:16:17 +01002113config NEON
2114 bool "Advanced SIMD (NEON) Extension support"
2115 depends on VFPv3 && CPU_V7
2116 help
2117 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2118 Extension.
2119
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002120config KERNEL_MODE_NEON
2121 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002122 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002123 help
2124 Say Y to include support for NEON in kernel mode.
2125
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126endmenu
2127
2128menu "Userspace binary formats"
2129
2130source "fs/Kconfig.binfmt"
2131
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132endmenu
2133
2134menu "Power management options"
2135
Russell Kingeceab4a2005-11-15 11:31:41 +00002136source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137
Johannes Bergf4cb5702007-12-08 02:14:00 +01002138config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002139 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002140 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002141 def_bool y
2142
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002143config ARM_CPU_SUSPEND
2144 def_bool PM_SLEEP
2145
Sebastian Capella603fb422014-03-25 01:20:29 +01002146config ARCH_HIBERNATION_POSSIBLE
2147 bool
2148 depends on MMU
2149 default y if ARCH_SUSPEND_POSSIBLE
2150
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151endmenu
2152
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002153source "net/Kconfig"
2154
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002155source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156
Kumar Gala916f7432015-02-26 15:49:09 -06002157source "drivers/firmware/Kconfig"
2158
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159source "fs/Kconfig"
2160
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161source "arch/arm/Kconfig.debug"
2162
2163source "security/Kconfig"
2164
2165source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002166if CRYPTO
2167source "arch/arm/crypto/Kconfig"
2168endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169
2170source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002171
2172source "arch/arm/kvm/Kconfig"