blob: 34e1569a11ee322a0a020bdfe0c9b801b6b58c12 [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
Arnd Bergmannaa7d5f12015-11-19 13:20:54 +010079 select OF_EARLY_FLATTREE if OF
80 select OF_RESERVED_MEM if OF
Russell King171b3f02013-09-12 21:24:42 +010081 select OLD_SIGACTION
82 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010083 select PERF_USE_VMALLOC
84 select RTC_LIB
85 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010086 # Above selects are sorted alphabetically; please add new ones
87 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 help
89 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000090 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000092 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 Europe. There is an ARM Linux project with a web page at
94 <http://www.arm.linux.org.uk/>.
95
Russell King74facff2011-06-02 11:16:22 +010096config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070097 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010098 bool
99
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200100config NEED_SG_DMA_LENGTH
101 bool
102
103config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200104 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100105 select ARM_HAS_SG_CHAIN
106 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200107
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900108if ARM_DMA_USE_IOMMU
109
110config ARM_DMA_IOMMU_ALIGNMENT
111 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
112 range 4 9
113 default 8
114 help
115 DMA mapping framework by default aligns all buffers to the smallest
116 PAGE_SIZE order which is greater than or equal to the requested buffer
117 size. This works well for buffers up to a few hundreds kilobytes, but
118 for larger buffers it just a waste of address space. Drivers which has
119 relatively small addressing window (like 64Mib) might run out of
120 virtual space with just a few allocations.
121
122 With this parameter you can specify the maximum PAGE_SIZE order for
123 DMA IOMMU buffers. Larger buffers will be aligned only to this
124 specified order. The order is expressed as a power of two multiplied
125 by the PAGE_SIZE.
126
127endif
128
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100129config MIGHT_HAVE_PCI
130 bool
131
Ralf Baechle75e71532007-02-09 17:08:58 +0000132config SYS_SUPPORTS_APM_EMULATION
133 bool
134
Linus Walleijbc581772009-09-15 17:30:37 +0100135config HAVE_TCM
136 bool
137 select GENERIC_ALLOCATOR
138
Russell Kinge119bff2010-01-10 17:23:29 +0000139config HAVE_PROC_CPU
140 bool
141
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700142config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000143 bool
Al Viro5ea81762007-02-11 15:41:31 +0000144
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145config EISA
146 bool
147 ---help---
148 The Extended Industry Standard Architecture (EISA) bus was
149 developed as an open alternative to the IBM MicroChannel bus.
150
151 The EISA bus provided some of the features of the IBM MicroChannel
152 bus while maintaining backward compatibility with cards made for
153 the older ISA bus. The EISA bus saw limited use between 1988 and
154 1995 when it was made obsolete by the PCI bus.
155
156 Say Y here if you are building a kernel for an EISA-based machine.
157
158 Otherwise, say N.
159
160config SBUS
161 bool
162
Russell Kingf16fb1e2007-04-28 09:59:37 +0100163config STACKTRACE_SUPPORT
164 bool
165 default y
166
Nicolas Pitref76e9152008-04-24 01:31:46 -0400167config HAVE_LATENCYTOP_SUPPORT
168 bool
169 depends on !SMP
170 default y
171
Russell Kingf16fb1e2007-04-28 09:59:37 +0100172config LOCKDEP_SUPPORT
173 bool
174 default y
175
Russell King7ad1bcb2006-08-27 12:07:02 +0100176config TRACE_IRQFLAGS_SUPPORT
177 bool
Arnd Bergmanncb1293e2015-05-26 15:40:44 +0100178 default !CPU_V7M
Russell King7ad1bcb2006-08-27 12:07:02 +0100179
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180config RWSEM_XCHGADD_ALGORITHM
181 bool
Will Deacon8a874112014-05-02 17:06:19 +0100182 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
David Howellsf0d1b0b2006-12-08 02:37:49 -0800184config ARCH_HAS_ILOG2_U32
185 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800186
187config ARCH_HAS_ILOG2_U64
188 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800189
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100190config ARCH_HAS_BANDGAP
191 bool
192
Stefan Agnera5f4c562015-08-13 00:01:52 +0100193config FIX_EARLYCON_MEM
194 def_bool y if MMU
195
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800196config GENERIC_HWEIGHT
197 bool
198 default y
199
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200config GENERIC_CALIBRATE_DELAY
201 bool
202 default y
203
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100204config ARCH_MAY_HAVE_PC_FDC
205 bool
206
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800207config ZONE_DMA
208 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800209
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800210config NEED_DMA_MAP_STATE
211 def_bool y
212
David A. Longc7edc9e2014-03-07 11:23:04 -0500213config ARCH_SUPPORTS_UPROBES
214 def_bool y
215
Rob Herring58af4a22012-03-20 14:33:01 -0500216config ARCH_HAS_DMA_SET_COHERENT_MASK
217 bool
218
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219config GENERIC_ISA_DMA
220 bool
221
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222config FIQ
223 bool
224
Rob Herring13a50452012-02-07 09:28:22 -0600225config NEED_RET_TO_USER
226 bool
227
Al Viro034d2f52005-12-19 16:27:59 -0500228config ARCH_MTD_XIP
229 bool
230
Hyok S. Choic760fc12006-03-27 15:18:50 +0100231config VECTORS_BASE
232 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900233 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100234 default DRAM_BASE if REMAP_VECTORS_TO_RAM
235 default 0x00000000
236 help
Russell King19accfd2013-07-04 11:40:32 +0100237 The base address of exception vectors. This must be two pages
238 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100239
Russell Kingdc21af92011-01-04 19:09:43 +0000240config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100241 bool "Patch physical to virtual translations at runtime" if EMBEDDED
242 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100243 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000244 depends on !ARCH_REALVIEW || !SPARSEMEM
245 help
Russell King111e9a52011-05-12 10:02:42 +0100246 Patch phys-to-virt and virt-to-phys translation functions at
247 boot and module load time according to the position of the
248 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000249
Russell King111e9a52011-05-12 10:02:42 +0100250 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100251 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000252
Russell Kingc1beced2011-08-10 10:23:45 +0100253 Only disable this option if you know that you do not require
254 this feature (eg, building a kernel for a single machine) and
255 you need to shrink the kernel to the minimal size.
256
Rob Herringc334bc12012-03-04 22:03:33 -0600257config NEED_MACH_IO_H
258 bool
259 help
260 Select this when mach/io.h is required to provide special
261 definitions for this platform. The need for mach/io.h should
262 be avoided when possible.
263
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400264config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400265 bool
Russell King111e9a52011-05-12 10:02:42 +0100266 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400267 Select this when mach/memory.h is required to provide special
268 definitions for this platform. The need for mach/memory.h should
269 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400270
271config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100272 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100273 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100274 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100275 default 0x00000000 if ARCH_EBSA110 || \
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100276 ARCH_FOOTBRIDGE || \
277 ARCH_INTEGRATOR || \
278 ARCH_IOP13XX || \
279 ARCH_KS8695 || \
280 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
281 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
282 default 0x20000000 if ARCH_S5PV210
283 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700284 default 0xc0000000 if ARCH_SA1100
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400285 help
286 Please provide the physical address corresponding to the
287 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000288
Simon Glass87e040b2011-08-16 23:44:26 +0100289config GENERIC_BUG
290 def_bool y
291 depends on BUG
292
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700293config PGTABLE_LEVELS
294 int
295 default 3 if ARM_LPAE
296 default 2
297
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298source "init/Kconfig"
299
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700300source "kernel/Kconfig.freezer"
301
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302menu "System Type"
303
Hyok S. Choi3c427972009-07-24 12:35:00 +0100304config MMU
305 bool "MMU-based Paged Memory Management Support"
306 default y
307 help
308 Select if you want MMU-based virtualised addressing space
309 support by paged memory management. If unsure, say 'Y'.
310
Russell Kingccf50e22010-03-15 19:03:06 +0000311#
312# The "ARM system type" choice list is ordered alphabetically by option
313# text. Please add new entries in the option alphabetic order.
314#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315choice
316 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100317 default ARCH_VERSATILE if !MMU
318 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319
Rob Herring387798b2012-09-06 13:41:12 -0500320config ARCH_MULTIPLATFORM
321 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100322 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600323 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700324 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500325 select ARM_PATCH_PHYS_VIRT
326 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500327 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600328 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600329 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100330 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500331 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600332 select SPARSE_IRQ
333 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600334
Stefan Agner9c77bc42015-05-20 00:03:51 +0200335config ARM_SINGLE_ARMV7M
336 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
337 depends on !MMU
338 select ARCH_WANT_OPTIONAL_GPIOLIB
339 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200340 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200341 select CLKSRC_OF
342 select COMMON_CLK
343 select CPU_V7M
344 select GENERIC_CLOCKEVENTS
345 select NO_IOPORT_MAP
346 select SPARSE_IRQ
347 select USE_OF
348
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100349config ARCH_REALVIEW
350 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100351 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100352 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100353 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200354 select COMMON_CLK
355 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100356 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100357 select GPIO_PL061 if GPIOLIB
358 select ICST
359 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000360 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000361 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100362 help
363 This enables support for ARM Ltd RealView boards.
364
365config ARCH_VERSATILE
366 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100367 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100368 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100369 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100370 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100371 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100372 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900373 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000374 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000375 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100376 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000377 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100378 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100379 help
380 This enables support for ARM Ltd Versatile board.
381
Russell King93e22562012-10-12 14:20:52 +0100382config ARCH_CLPS711X
383 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400384 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400385 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400386 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100387 select COMMON_CLK
388 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400389 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400390 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400391 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100392 help
393 Support for Cirrus Logic 711x/721x/731x based boards.
394
Russell King788c9702009-04-26 14:21:59 +0100395config ARCH_GEMINI
396 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100397 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200398 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100399 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200400 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100401 help
402 Support for the Cortina Systems Gemini family SoCs
403
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404config ARCH_EBSA110
405 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100406 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000407 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100408 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600409 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400410 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700411 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 help
413 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000414 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 Ethernet interface, two PCMCIA sockets, two serial ports and a
416 parallel port.
417
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000418config ARCH_EP93XX
419 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100420 select ARCH_HAS_HOLES_MEMORYMODEL
421 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000422 select ARM_AMBA
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700423 select ARM_PATCH_PHYS_VIRT
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000424 select ARM_VIC
H Hartley Sweetenb8824c92015-06-15 10:35:06 -0700425 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100426 select CLKDEV_LOOKUP
Linus Walleij000bc172015-06-15 14:34:03 +0200427 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100428 select CPU_ARM920T
Linus Walleij000bc172015-06-15 14:34:03 +0200429 select GENERIC_CLOCKEVENTS
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000430 help
431 This enables support for the Cirrus EP93xx series of CPUs.
432
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433config ARCH_FOOTBRIDGE
434 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000435 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000437 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200438 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600439 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400440 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000441 help
442 Support for systems based on the DC21285 companion chip
443 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100445config ARCH_NETX
446 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100447 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100448 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000449 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100450 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000451 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100452 This enables support for systems based on the Hilscher NetX Soc
453
Russell King3b938be2007-05-12 11:25:44 +0100454config ARCH_IOP13XX
455 bool "IOP13xx-based"
456 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100457 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400458 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600459 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100460 select PCI
461 select PLAT_IOP
462 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000463 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100464 help
465 Support for Intel's IOP13XX (XScale) family of processors.
466
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100467config ARCH_IOP32X
468 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100469 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100470 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000471 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200472 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600473 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100474 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100475 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000476 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100477 Support for Intel's 80219 and IOP32X (XScale) family of
478 processors.
479
480config ARCH_IOP33X
481 bool "IOP33x-based"
482 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100483 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000484 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200485 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600486 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100487 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100488 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100489 help
490 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491
Russell King3b938be2007-05-12 11:25:44 +0100492config ARCH_IXP4XX
493 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100494 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500495 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100496 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100497 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100498 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000499 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100500 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100501 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100502 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600503 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200504 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100505 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100506 help
Russell King3b938be2007-05-12 11:25:44 +0100507 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100508
Saeed Bisharaedabd382009-08-06 15:12:43 +0300509config ARCH_DOVE
510 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300511 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100512 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300513 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100514 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100515 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100516 select PINCTRL
517 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200518 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300519 help
520 Support for the Marvell Dove SoC 88AP510
521
Russell King788c9702009-04-26 14:21:59 +0100522config ARCH_MV78XX0
523 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700524 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100525 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100526 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100527 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100528 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200529 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100530 help
531 Support for the following Marvell MV78xx0 series SoCs:
532 MV781x0, MV782x0.
533
534config ARCH_ORION5X
535 bool "Marvell Orion"
536 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700537 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100538 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100539 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100540 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100541 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200542 select PLAT_ORION_LEGACY
Benjamin Cama5be9fc22015-07-14 16:25:58 +0200543 select MULTI_IRQ_HANDLER
Russell King788c9702009-04-26 14:21:59 +0100544 help
545 Support for the following Marvell Orion 5x series SoCs:
546 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
547 Orion-2 (5281), Orion-1-90 (6183).
548
549config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500550 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100551 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100552 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100553 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100554 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100555 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800556 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800557 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800558 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800559 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100560 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400561 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100562 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500563 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100564
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100565config ARCH_KS8695
566 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100567 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200568 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100569 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200570 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100571 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100572 help
573 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
574 System-on-Chip devices.
575
Russell King788c9702009-04-26 14:21:59 +0100576config ARCH_W90X900
577 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100578 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100579 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100580 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100581 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100582 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200583 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100584 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
585 At present, the w90x900 has been renamed nuc900, regarding
586 the ARM series product line, you can login the following
587 link address to know more.
588
589 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
590 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400591
Russell King93e22562012-10-12 14:20:52 +0100592config ARCH_LPC32XX
593 bool "NXP LPC32XX"
594 select ARCH_REQUIRE_GPIOLIB
595 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000596 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100597 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100598 select CPU_ARM926T
599 select GENERIC_CLOCKEVENTS
600 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100601 select USE_OF
602 help
603 Support for the NXP LPC32XX family of processors
604
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700606 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100607 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100608 select ARCH_MTD_XIP
609 select ARCH_REQUIRE_GPIOLIB
610 select ARM_CPU_SUSPEND if PM
611 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100612 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100613 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100614 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200615 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100616 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800617 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100618 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100619 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100620 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800621 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800622 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000623 help
eric miao2c8086a2007-09-11 19:13:17 -0700624 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625
626config ARCH_RPC
627 bool "RiscPC"
Russell King868e87c2015-09-28 10:31:50 +0100628 depends on MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100630 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100631 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000632 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100633 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100634 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200635 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100636 select HAVE_PATA_PLATFORM
637 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600638 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400639 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700640 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100641 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 help
643 On the Acorn Risc-PC, Linux can support the internal IDE disk and
644 CD-ROM interface, serial and parallel port, and the floppy drive.
645
646config ARCH_SA1100
647 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100648 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700649 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100650 select ARCH_SPARSEMEM_ENABLE
651 select CLKDEV_LOOKUP
652 select CLKSRC_MMIO
653 select CPU_FREQ
654 select CPU_SA1100
655 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200656 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100657 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100658 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100659 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400660 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100661 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000662 help
663 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900665config ARCH_S3C24XX
666 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900667 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100668 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100669 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200670 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800671 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900672 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900673 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900674 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100675 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900676 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600677 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900678 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900680 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
681 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
682 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
683 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900684
Ben Dooksa08ab632008-10-21 14:06:39 +0100685config ARCH_S3C64XX
686 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900687 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200688 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100689 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100690 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100691 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200692 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900693 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900694 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800695 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900696 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900697 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900698 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100699 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700700 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100701 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100702 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100703 select S3C_DEV_NAND
704 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900705 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900706 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900707 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100708 help
709 Samsung S3C64XX series based systems
710
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100711config ARCH_DAVINCI
712 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100713 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700714 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100715 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700716 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100717 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100718 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100719 select HAVE_IDE
Sekhar Nori689e3312012-08-28 15:27:52 +0530720 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100721 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100722 help
723 Support for TI's DaVinci platform.
724
Tony Lindgrena0694862013-01-11 11:24:20 -0800725config ARCH_OMAP1
726 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600727 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100728 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800729 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100730 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200731 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100732 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100733 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800734 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800735 select HAVE_IDE
736 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700737 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800738 select NEED_MACH_IO_H if PCCARD
739 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700740 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100741 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800742 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800743
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744endchoice
745
Rob Herring387798b2012-09-06 13:41:12 -0500746menu "Multiple platform selection"
747 depends on ARCH_MULTIPLATFORM
748
749comment "CPU Core family selection"
750
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100751config ARCH_MULTI_V4
752 bool "ARMv4 based platforms (FA526)"
753 depends on !ARCH_MULTI_V6_V7
754 select ARCH_MULTI_V4_V5
755 select CPU_FA526
756
Rob Herring387798b2012-09-06 13:41:12 -0500757config ARCH_MULTI_V4T
758 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500759 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100760 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200761 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
762 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
763 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500764
765config ARCH_MULTI_V5
766 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500767 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100768 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100769 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200770 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
771 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500772
773config ARCH_MULTI_V4_V5
774 bool
775
776config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800777 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500778 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600779 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500780
781config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800782 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500783 default y
784 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100785 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600786 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500787
788config ARCH_MULTI_V6_V7
789 bool
Rob Herring9352b052014-01-31 15:36:10 -0600790 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500791
792config ARCH_MULTI_CPU_AUTO
793 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
794 select ARCH_MULTI_V5
795
796endmenu
797
Rob Herring05e2a3d2013-12-05 10:04:54 -0600798config ARCH_VIRT
799 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600800 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600801 select ARM_GIC
Jean-Philippe Brucker0b28f1d2015-10-01 13:47:18 +0100802 select ARM_GIC_V3
Rob Herring05e2a3d2013-12-05 10:04:54 -0600803 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600804 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600805
Russell Kingccf50e22010-03-15 19:03:06 +0000806#
807# This is sorted alphabetically by mach-* pathname. However, plat-*
808# Kconfigs may be included either alphabetically (according to the
809# plat- suffix) or along side the corresponding mach-* source.
810#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200811source "arch/arm/mach-mvebu/Kconfig"
812
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200813source "arch/arm/mach-alpine/Kconfig"
814
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100815source "arch/arm/mach-asm9260/Kconfig"
816
Russell King95b8f202010-01-14 11:43:54 +0000817source "arch/arm/mach-at91/Kconfig"
818
Anders Berg1d22924e2014-05-23 11:08:35 +0200819source "arch/arm/mach-axxia/Kconfig"
820
Christian Daudt8ac49e02012-11-19 09:46:10 -0800821source "arch/arm/mach-bcm/Kconfig"
822
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200823source "arch/arm/mach-berlin/Kconfig"
824
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825source "arch/arm/mach-clps711x/Kconfig"
826
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300827source "arch/arm/mach-cns3xxx/Kconfig"
828
Russell King95b8f202010-01-14 11:43:54 +0000829source "arch/arm/mach-davinci/Kconfig"
830
Baruch Siachdf8d7422015-01-14 10:40:30 +0200831source "arch/arm/mach-digicolor/Kconfig"
832
Russell King95b8f202010-01-14 11:43:54 +0000833source "arch/arm/mach-dove/Kconfig"
834
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000835source "arch/arm/mach-ep93xx/Kconfig"
836
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837source "arch/arm/mach-footbridge/Kconfig"
838
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200839source "arch/arm/mach-gemini/Kconfig"
840
Rob Herring387798b2012-09-06 13:41:12 -0500841source "arch/arm/mach-highbank/Kconfig"
842
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800843source "arch/arm/mach-hisi/Kconfig"
844
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845source "arch/arm/mach-integrator/Kconfig"
846
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100847source "arch/arm/mach-iop32x/Kconfig"
848
849source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
Dan Williams285f5fa2006-12-07 02:59:39 +0100851source "arch/arm/mach-iop13xx/Kconfig"
852
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853source "arch/arm/mach-ixp4xx/Kconfig"
854
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400855source "arch/arm/mach-keystone/Kconfig"
856
Russell King95b8f202010-01-14 11:43:54 +0000857source "arch/arm/mach-ks8695/Kconfig"
858
Carlo Caione3b8f5032014-09-10 22:16:59 +0200859source "arch/arm/mach-meson/Kconfig"
860
Jonas Jensen17723fd32013-12-18 13:58:45 +0100861source "arch/arm/mach-moxart/Kconfig"
862
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200863source "arch/arm/mach-mv78xx0/Kconfig"
864
Shawn Guo3995eb82012-09-13 19:48:07 +0800865source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866
Matthias Bruggerf682a212014-05-13 01:06:13 +0200867source "arch/arm/mach-mediatek/Kconfig"
868
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800869source "arch/arm/mach-mxs/Kconfig"
870
Russell King95b8f202010-01-14 11:43:54 +0000871source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800872
Russell King95b8f202010-01-14 11:43:54 +0000873source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000874
Daniel Tang9851ca52013-06-11 18:40:17 +1000875source "arch/arm/mach-nspire/Kconfig"
876
Tony Lindgrend48af152005-07-10 19:58:17 +0100877source "arch/arm/plat-omap/Kconfig"
878
879source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
Tony Lindgren1dbae812005-11-10 14:26:51 +0000881source "arch/arm/mach-omap2/Kconfig"
882
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400883source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400884
Rob Herring387798b2012-09-06 13:41:12 -0500885source "arch/arm/mach-picoxcell/Kconfig"
886
Russell King95b8f202010-01-14 11:43:54 +0000887source "arch/arm/mach-pxa/Kconfig"
888source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889
Russell King95b8f202010-01-14 11:43:54 +0000890source "arch/arm/mach-mmp/Kconfig"
891
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600892source "arch/arm/mach-qcom/Kconfig"
893
Russell King95b8f202010-01-14 11:43:54 +0000894source "arch/arm/mach-realview/Kconfig"
895
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200896source "arch/arm/mach-rockchip/Kconfig"
897
Russell King95b8f202010-01-14 11:43:54 +0000898source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300899
Rob Herring387798b2012-09-06 13:41:12 -0500900source "arch/arm/mach-socfpga/Kconfig"
901
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100902source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100903
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100904source "arch/arm/mach-sti/Kconfig"
905
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900906source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907
Ben Dooks431107e2010-01-26 10:11:04 +0900908source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100909
Kukjin Kim170f4e42010-02-24 16:40:44 +0900910source "arch/arm/mach-s5pv210/Kconfig"
911
Kukjin Kim83014572011-11-06 13:54:56 +0900912source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500913source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900914
Russell King882d01f2010-03-02 23:40:15 +0000915source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916
Maxime Ripard3b526342012-11-08 12:40:16 +0100917source "arch/arm/mach-sunxi/Kconfig"
918
Barry Song156a0992012-08-23 13:41:58 +0800919source "arch/arm/mach-prima2/Kconfig"
920
Erik Gillingc5f80062010-01-21 16:53:02 -0800921source "arch/arm/mach-tegra/Kconfig"
922
Russell King95b8f202010-01-14 11:43:54 +0000923source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900925source "arch/arm/mach-uniphier/Kconfig"
926
Russell King95b8f202010-01-14 11:43:54 +0000927source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928
929source "arch/arm/mach-versatile/Kconfig"
930
Russell Kingceade892010-02-11 21:44:53 +0000931source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000932source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000933
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300934source "arch/arm/mach-vt8500/Kconfig"
935
wanzongshun7ec80dd2008-12-03 03:55:38 +0100936source "arch/arm/mach-w90x900/Kconfig"
937
Jun Nieacede512015-04-28 17:18:05 +0800938source "arch/arm/mach-zx/Kconfig"
939
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600940source "arch/arm/mach-zynq/Kconfig"
941
Stefan Agner499f1642015-05-21 00:35:44 +0200942# ARMv7-M architecture
943config ARCH_EFM32
944 bool "Energy Micro efm32"
945 depends on ARM_SINGLE_ARMV7M
946 select ARCH_REQUIRE_GPIOLIB
947 help
948 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
949 processors.
950
951config ARCH_LPC18XX
952 bool "NXP LPC18xx/LPC43xx"
953 depends on ARM_SINGLE_ARMV7M
954 select ARCH_HAS_RESET_CONTROLLER
955 select ARM_AMBA
956 select CLKSRC_LPC32XX
957 select PINCTRL
958 help
959 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
960 high performance microcontrollers.
961
962config ARCH_STM32
963 bool "STMicrolectronics STM32"
964 depends on ARM_SINGLE_ARMV7M
965 select ARCH_HAS_RESET_CONTROLLER
966 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200967 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200968 select RESET_CONTROLLER
969 help
970 Support for STMicroelectronics STM32 processors.
971
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972# Definitions to make life easier
973config ARCH_ACORN
974 bool
975
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100976config PLAT_IOP
977 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700978 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100979
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400980config PLAT_ORION
981 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100982 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100983 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100984 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200985 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400986
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200987config PLAT_ORION_LEGACY
988 bool
989 select PLAT_ORION
990
Eric Miaobd5ce432009-01-20 12:06:01 +0800991config PLAT_PXA
992 bool
993
Russell Kingf4b8b312010-01-14 12:48:06 +0000994config PLAT_VERSATILE
995 bool
996
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900997source "arch/arm/firmware/Kconfig"
998
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999source arch/arm/mm/Kconfig
1000
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001001config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001002 bool "Enable iWMMXt support"
1003 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1004 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001005 help
1006 Enable support for iWMMXt context switching at run time if
1007 running on a CPU that supports it.
1008
eric miao52108642010-12-13 09:42:34 +01001009config MULTI_IRQ_HANDLER
1010 bool
1011 help
1012 Allow each machine to specify it's own IRQ handler at run time.
1013
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001014if !MMU
1015source "arch/arm/Kconfig-nommu"
1016endif
1017
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001018config PJ4B_ERRATA_4742
1019 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1020 depends on CPU_PJ4B && MACH_ARMADA_370
1021 default y
1022 help
1023 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1024 Event (WFE) IDLE states, a specific timing sensitivity exists between
1025 the retiring WFI/WFE instructions and the newly issued subsequent
1026 instructions. This sensitivity can result in a CPU hang scenario.
1027 Workaround:
1028 The software must insert either a Data Synchronization Barrier (DSB)
1029 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1030 instruction
1031
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001032config ARM_ERRATA_326103
1033 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1034 depends on CPU_V6
1035 help
1036 Executing a SWP instruction to read-only memory does not set bit 11
1037 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1038 treat the access as a read, preventing a COW from occurring and
1039 causing the faulting task to livelock.
1040
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001041config ARM_ERRATA_411920
1042 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001043 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001044 help
1045 Invalidation of the Instruction Cache operation can
1046 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1047 It does not affect the MPCore. This option enables the ARM Ltd.
1048 recommended workaround.
1049
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001050config ARM_ERRATA_430973
1051 bool "ARM errata: Stale prediction on replaced interworking branch"
1052 depends on CPU_V7
1053 help
1054 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001055 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001056 interworking branch is replaced with another code sequence at the
1057 same virtual address, whether due to self-modifying code or virtual
1058 to physical address re-mapping, Cortex-A8 does not recover from the
1059 stale interworking branch prediction. This results in Cortex-A8
1060 executing the new code sequence in the incorrect ARM or Thumb state.
1061 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1062 and also flushes the branch target cache at every context switch.
1063 Note that setting specific bits in the ACTLR register may not be
1064 available in non-secure mode.
1065
Catalin Marinas855c5512009-04-30 17:06:15 +01001066config ARM_ERRATA_458693
1067 bool "ARM errata: Processor deadlock when a false hazard is created"
1068 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001069 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001070 help
1071 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1072 erratum. For very specific sequences of memory operations, it is
1073 possible for a hazard condition intended for a cache line to instead
1074 be incorrectly associated with a different cache line. This false
1075 hazard might then cause a processor deadlock. The workaround enables
1076 the L1 caching of the NEON accesses and disables the PLD instruction
1077 in the ACTLR register. Note that setting specific bits in the ACTLR
1078 register may not be available in non-secure mode.
1079
Catalin Marinas0516e462009-04-30 17:06:20 +01001080config ARM_ERRATA_460075
1081 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1082 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001083 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001084 help
1085 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1086 erratum. Any asynchronous access to the L2 cache may encounter a
1087 situation in which recent store transactions to the L2 cache are lost
1088 and overwritten with stale memory contents from external memory. The
1089 workaround disables the write-allocate mode for the L2 cache via the
1090 ACTLR register. Note that setting specific bits in the ACTLR register
1091 may not be available in non-secure mode.
1092
Will Deacon9f050272010-09-14 09:51:43 +01001093config ARM_ERRATA_742230
1094 bool "ARM errata: DMB operation may be faulty"
1095 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001096 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001097 help
1098 This option enables the workaround for the 742230 Cortex-A9
1099 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1100 between two write operations may not ensure the correct visibility
1101 ordering of the two writes. This workaround sets a specific bit in
1102 the diagnostic register of the Cortex-A9 which causes the DMB
1103 instruction to behave as a DSB, ensuring the correct behaviour of
1104 the two writes.
1105
Will Deacona672e992010-09-14 09:53:02 +01001106config ARM_ERRATA_742231
1107 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1108 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001109 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001110 help
1111 This option enables the workaround for the 742231 Cortex-A9
1112 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1113 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1114 accessing some data located in the same cache line, may get corrupted
1115 data due to bad handling of the address hazard when the line gets
1116 replaced from one of the CPUs at the same time as another CPU is
1117 accessing it. This workaround sets specific bits in the diagnostic
1118 register of the Cortex-A9 which reduces the linefill issuing
1119 capabilities of the processor.
1120
Jon Medhurst69155792013-06-07 10:35:35 +01001121config ARM_ERRATA_643719
1122 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1123 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001124 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001125 help
1126 This option enables the workaround for the 643719 Cortex-A9 (prior to
1127 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1128 register returns zero when it should return one. The workaround
1129 corrects this value, ensuring cache maintenance operations which use
1130 it behave as intended and avoiding data corruption.
1131
Will Deaconcdf357f2010-08-05 11:20:51 +01001132config ARM_ERRATA_720789
1133 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001134 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001135 help
1136 This option enables the workaround for the 720789 Cortex-A9 (prior to
1137 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1138 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1139 As a consequence of this erratum, some TLB entries which should be
1140 invalidated are not, resulting in an incoherency in the system page
1141 tables. The workaround changes the TLB flushing routines to invalidate
1142 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001143
1144config ARM_ERRATA_743622
1145 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1146 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001147 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001148 help
1149 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001150 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001151 optimisation in the Cortex-A9 Store Buffer may lead to data
1152 corruption. This workaround sets a specific bit in the diagnostic
1153 register of the Cortex-A9 which disables the Store Buffer
1154 optimisation, preventing the defect from occurring. This has no
1155 visible impact on the overall performance or power consumption of the
1156 processor.
1157
Will Deacon9a27c272011-02-18 16:36:35 +01001158config ARM_ERRATA_751472
1159 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001160 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001161 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001162 help
1163 This option enables the workaround for the 751472 Cortex-A9 (prior
1164 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1165 completion of a following broadcasted operation if the second
1166 operation is received by a CPU before the ICIALLUIS has completed,
1167 potentially leading to corrupted entries in the cache or TLB.
1168
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001169config ARM_ERRATA_754322
1170 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1171 depends on CPU_V7
1172 help
1173 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1174 r3p*) erratum. A speculative memory access may cause a page table walk
1175 which starts prior to an ASID switch but completes afterwards. This
1176 can populate the micro-TLB with a stale entry which may be hit with
1177 the new ASID. This workaround places two dsb instructions in the mm
1178 switching code so that no page table walks can cross the ASID switch.
1179
Will Deacon5dab26af2011-03-04 12:38:54 +01001180config ARM_ERRATA_754327
1181 bool "ARM errata: no automatic Store Buffer drain"
1182 depends on CPU_V7 && SMP
1183 help
1184 This option enables the workaround for the 754327 Cortex-A9 (prior to
1185 r2p0) erratum. The Store Buffer does not have any automatic draining
1186 mechanism and therefore a livelock may occur if an external agent
1187 continuously polls a memory location waiting to observe an update.
1188 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1189 written polling loops from denying visibility of updates to memory.
1190
Catalin Marinas145e10e2011-08-15 11:04:41 +01001191config ARM_ERRATA_364296
1192 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001193 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001194 help
1195 This options enables the workaround for the 364296 ARM1136
1196 r0p2 erratum (possible cache data corruption with
1197 hit-under-miss enabled). It sets the undocumented bit 31 in
1198 the auxiliary control register and the FI bit in the control
1199 register, thus disabling hit-under-miss without putting the
1200 processor into full low interrupt latency mode. ARM11MPCore
1201 is not affected.
1202
Will Deaconf630c1b2011-09-15 11:45:15 +01001203config ARM_ERRATA_764369
1204 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1205 depends on CPU_V7 && SMP
1206 help
1207 This option enables the workaround for erratum 764369
1208 affecting Cortex-A9 MPCore with two or more processors (all
1209 current revisions). Under certain timing circumstances, a data
1210 cache line maintenance operation by MVA targeting an Inner
1211 Shareable memory region may fail to proceed up to either the
1212 Point of Coherency or to the Point of Unification of the
1213 system. This workaround adds a DSB instruction before the
1214 relevant cache maintenance functions and sets a specific bit
1215 in the diagnostic control register of the SCU.
1216
Simon Horman7253b852012-09-28 02:12:45 +01001217config ARM_ERRATA_775420
1218 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1219 depends on CPU_V7
1220 help
1221 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1222 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1223 operation aborts with MMU exception, it might cause the processor
1224 to deadlock. This workaround puts DSB before executing ISB if
1225 an abort may occur on cache maintenance.
1226
Catalin Marinas93dc6882013-03-26 23:35:04 +01001227config ARM_ERRATA_798181
1228 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1229 depends on CPU_V7 && SMP
1230 help
1231 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1232 adequately shooting down all use of the old entries. This
1233 option enables the Linux kernel workaround for this erratum
1234 which sends an IPI to the CPUs that are running the same ASID
1235 as the one being invalidated.
1236
Will Deacon84b65042013-08-20 17:29:55 +01001237config ARM_ERRATA_773022
1238 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1239 depends on CPU_V7
1240 help
1241 This option enables the workaround for the 773022 Cortex-A15
1242 (up to r0p4) erratum. In certain rare sequences of code, the
1243 loop buffer may deliver incorrect instructions. This
1244 workaround disables the loop buffer to avoid the erratum.
1245
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246endmenu
1247
1248source "arch/arm/common/Kconfig"
1249
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250menu "Bus support"
1251
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252config ISA
1253 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 help
1255 Find out whether you have ISA slots on your motherboard. ISA is the
1256 name of a bus system, i.e. the way the CPU talks to the other stuff
1257 inside your box. Other bus systems are PCI, EISA, MicroChannel
1258 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1259 newer boards don't support it. If you have ISA, say Y, otherwise N.
1260
Russell King065909b2006-01-04 15:44:16 +00001261# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262config ISA_DMA
1263 bool
Russell King065909b2006-01-04 15:44:16 +00001264 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265
Russell King065909b2006-01-04 15:44:16 +00001266# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001267config ISA_DMA_API
1268 bool
Al Viro5cae8412005-05-04 05:39:22 +01001269
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001271 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 help
1273 Find out whether you have a PCI motherboard. PCI is the name of a
1274 bus system, i.e. the way the CPU talks to the other stuff inside
1275 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1276 VESA. If you have PCI, say Y, otherwise N.
1277
Anton Vorontsov52882172010-04-19 13:20:49 +01001278config PCI_DOMAINS
1279 bool
1280 depends on PCI
1281
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001282config PCI_DOMAINS_GENERIC
1283 def_bool PCI_DOMAINS
1284
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001285config PCI_NANOENGINE
1286 bool "BSE nanoEngine PCI support"
1287 depends on SA1100_NANOENGINE
1288 help
1289 Enable PCI on the BSE nanoEngine board.
1290
Matthew Wilcox36e23592007-07-10 10:54:40 -06001291config PCI_SYSCALL
1292 def_bool PCI
1293
Mike Rapoporta0113a92007-11-25 08:55:34 +01001294config PCI_HOST_ITE8152
1295 bool
1296 depends on PCI && MACH_ARMCORE
1297 default y
1298 select DMABOUNCE
1299
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001301source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302
1303source "drivers/pcmcia/Kconfig"
1304
1305endmenu
1306
1307menu "Kernel Features"
1308
Dave Martin3b556582011-12-07 15:38:04 +00001309config HAVE_SMP
1310 bool
1311 help
1312 This option should be selected by machines which have an SMP-
1313 capable CPU.
1314
1315 The only effect of this option is to make the SMP-related
1316 options available to the user for configuration.
1317
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001319 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001320 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001321 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001322 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001323 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001324 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325 help
1326 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001327 a system with only one CPU, say N. If you have a system with more
1328 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329
Robert Graffham4a474152014-01-23 15:55:29 -08001330 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001332 you say Y here, the kernel will run on many, but not all,
1333 uniprocessor machines. On a uniprocessor machine, the kernel
1334 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335
Paul Bolle395cf962011-08-15 02:02:26 +02001336 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001338 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
1340 If you don't know what to do here, say N.
1341
Russell Kingf00ec482010-09-04 10:47:48 +01001342config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001343 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001344 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001345 default y
1346 help
1347 SMP kernels contain instructions which fail on non-SMP processors.
1348 Enabling this option allows the kernel to modify itself to make
1349 these instructions safe. Disabling it allows about 1K of space
1350 savings.
1351
1352 If you don't know what to do here, say Y.
1353
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001354config ARM_CPU_TOPOLOGY
1355 bool "Support cpu topology definition"
1356 depends on SMP && CPU_V7
1357 default y
1358 help
1359 Support ARM cpu topology definition. The MPIDR register defines
1360 affinity between processors which is then used to describe the cpu
1361 topology of an ARM System.
1362
1363config SCHED_MC
1364 bool "Multi-core scheduler support"
1365 depends on ARM_CPU_TOPOLOGY
1366 help
1367 Multi-core scheduler support improves the CPU scheduler's decision
1368 making when dealing with multi-core CPU chips at a cost of slightly
1369 increased overhead in some places. If unsure say N here.
1370
1371config SCHED_SMT
1372 bool "SMT scheduler support"
1373 depends on ARM_CPU_TOPOLOGY
1374 help
1375 Improves the CPU scheduler's decision making when dealing with
1376 MultiThreading at a cost of slightly increased overhead in some
1377 places. If unsure say N here.
1378
Russell Kinga8cbcd92009-05-16 11:51:14 +01001379config HAVE_ARM_SCU
1380 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001381 help
1382 This option enables support for the ARM system coherency unit
1383
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001384config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001385 bool "Architected timer support"
1386 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001387 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001388 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001389 help
1390 This option enables support for the ARM architected timer
1391
Russell Kingf32f4ce2009-05-16 12:14:21 +01001392config HAVE_ARM_TWD
1393 bool
Rob Herringda4a6862013-02-06 21:17:47 -06001394 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001395 help
1396 This options enables support for the ARM timer and watchdog unit
1397
Nicolas Pitree8db2882012-04-12 02:45:22 -04001398config MCPM
1399 bool "Multi-Cluster Power Management"
1400 depends on CPU_V7 && SMP
1401 help
1402 This option provides the common power management infrastructure
1403 for (multi-)cluster based systems, such as big.LITTLE based
1404 systems.
1405
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001406config MCPM_QUAD_CLUSTER
1407 bool
1408 depends on MCPM
1409 help
1410 To avoid wasting resources unnecessarily, MCPM only supports up
1411 to 2 clusters by default.
1412 Platforms with 3 or 4 clusters that use MCPM must select this
1413 option to allow the additional clusters to be managed.
1414
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001415config BIG_LITTLE
1416 bool "big.LITTLE support (Experimental)"
1417 depends on CPU_V7 && SMP
1418 select MCPM
1419 help
1420 This option enables support selections for the big.LITTLE
1421 system architecture.
1422
1423config BL_SWITCHER
1424 bool "big.LITTLE switcher support"
1425 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001426 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001427 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001428 help
1429 The big.LITTLE "switcher" provides the core functionality to
1430 transparently handle transition between a cluster of A15's
1431 and a cluster of A7's in a big.LITTLE system.
1432
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001433config BL_SWITCHER_DUMMY_IF
1434 tristate "Simple big.LITTLE switcher user interface"
1435 depends on BL_SWITCHER && DEBUG_KERNEL
1436 help
1437 This is a simple and dummy char dev interface to control
1438 the big.LITTLE switcher core code. It is meant for
1439 debugging purposes only.
1440
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001441choice
1442 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001443 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001444 default VMSPLIT_3G
1445 help
1446 Select the desired split between kernel and user memory.
1447
1448 If you are not absolutely sure what you are doing, leave this
1449 option alone!
1450
1451 config VMSPLIT_3G
1452 bool "3G/1G user/kernel split"
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001453 config VMSPLIT_3G_OPT
1454 bool "3G/1G user/kernel split (for full 1G low memory)"
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001455 config VMSPLIT_2G
1456 bool "2G/2G user/kernel split"
1457 config VMSPLIT_1G
1458 bool "1G/3G user/kernel split"
1459endchoice
1460
1461config PAGE_OFFSET
1462 hex
Russell King006fa252014-02-26 19:40:46 +00001463 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001464 default 0x40000000 if VMSPLIT_1G
1465 default 0x80000000 if VMSPLIT_2G
Nicolas Pitre63ce4462015-09-13 03:30:11 +01001466 default 0xB0000000 if VMSPLIT_3G_OPT
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001467 default 0xC0000000
1468
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469config NR_CPUS
1470 int "Maximum number of CPUs (2-32)"
1471 range 2 32
1472 depends on SMP
1473 default "4"
1474
Russell Kinga054a812005-11-02 22:24:33 +00001475config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001476 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001477 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001478 help
1479 Say Y here to experiment with turning CPUs off and on. CPUs
1480 can be controlled through /sys/devices/system/cpu.
1481
Will Deacon2bdd4242012-12-12 19:20:52 +00001482config ARM_PSCI
1483 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1484 depends on CPU_V7
Mark Rutlandbe120392015-07-31 15:46:19 +01001485 select ARM_PSCI_FW
Will Deacon2bdd4242012-12-12 19:20:52 +00001486 help
1487 Say Y here if you want Linux to communicate with system firmware
1488 implementing the PSCI specification for CPU-centric power
1489 management operations described in ARM document number ARM DEN
1490 0022A ("Power State Coordination Interface System Software on
1491 ARM processors").
1492
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001493# The GPIO number here must be sorted by descending number. In case of
1494# a multiplatform kernel, we just want the highest value required by the
1495# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001496config ARCH_NR_GPIO
1497 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001498 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1499 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001500 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1501 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001502 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001503 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001504 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001505 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001506 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001507 default 0
1508 help
1509 Maximum number of GPIOs in the system.
1510
1511 If unsure, leave the default value.
1512
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001513source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514
Russell Kingc9218b12013-04-27 23:31:10 +01001515config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001516 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001517 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001518 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001519 default 128 if SOC_AT91RM9200
Russell King47d84682013-09-10 23:47:55 +01001520 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001521
1522choice
Russell King47d84682013-09-10 23:47:55 +01001523 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001524 prompt "Timer frequency"
1525
1526config HZ_100
1527 bool "100 Hz"
1528
1529config HZ_200
1530 bool "200 Hz"
1531
1532config HZ_250
1533 bool "250 Hz"
1534
1535config HZ_300
1536 bool "300 Hz"
1537
1538config HZ_500
1539 bool "500 Hz"
1540
1541config HZ_1000
1542 bool "1000 Hz"
1543
1544endchoice
1545
1546config HZ
1547 int
Russell King47d84682013-09-10 23:47:55 +01001548 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001549 default 100 if HZ_100
1550 default 200 if HZ_200
1551 default 250 if HZ_250
1552 default 300 if HZ_300
1553 default 500 if HZ_500
1554 default 1000
1555
1556config SCHED_HRTICK
1557 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001558
Catalin Marinas16c79652009-07-24 12:33:02 +01001559config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001560 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001561 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001562 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001563 select AEABI
1564 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001565 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001566 help
1567 By enabling this option, the kernel will be compiled in
1568 Thumb-2 mode. A compiler/assembler that understand the unified
1569 ARM-Thumb syntax is needed.
1570
1571 If unsure, say N.
1572
Dave Martin6f685c52011-03-03 11:41:12 +01001573config THUMB2_AVOID_R_ARM_THM_JUMP11
1574 bool "Work around buggy Thumb-2 short branch relocations in gas"
1575 depends on THUMB2_KERNEL && MODULES
1576 default y
1577 help
1578 Various binutils versions can resolve Thumb-2 branches to
1579 locally-defined, preemptible global symbols as short-range "b.n"
1580 branch instructions.
1581
1582 This is a problem, because there's no guarantee the final
1583 destination of the symbol, or any candidate locations for a
1584 trampoline, are within range of the branch. For this reason, the
1585 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1586 relocation in modules at all, and it makes little sense to add
1587 support.
1588
1589 The symptom is that the kernel fails with an "unsupported
1590 relocation" error when loading some modules.
1591
1592 Until fixed tools are available, passing
1593 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1594 code which hits this problem, at the cost of a bit of extra runtime
1595 stack usage in some cases.
1596
1597 The problem is described in more detail at:
1598 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1599
1600 Only Thumb-2 kernels are affected.
1601
1602 Unless you are sure your tools don't have this problem, say Y.
1603
Catalin Marinas0becb082009-07-24 12:32:53 +01001604config ARM_ASM_UNIFIED
1605 bool
1606
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001607config AEABI
1608 bool "Use the ARM EABI to compile the kernel"
1609 help
1610 This option allows for the kernel to be compiled using the latest
1611 ARM ABI (aka EABI). This is only useful if you are using a user
1612 space environment that is also compiled with EABI.
1613
1614 Since there are major incompatibilities between the legacy ABI and
1615 EABI, especially with regard to structure member alignment, this
1616 option also changes the kernel syscall calling convention to
1617 disambiguate both ABIs and allow for backward compatibility support
1618 (selected with CONFIG_OABI_COMPAT).
1619
1620 To use this you need GCC version 4.0.0 or later.
1621
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001622config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001623 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001624 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001625 help
1626 This option preserves the old syscall interface along with the
1627 new (ARM EABI) one. It also provides a compatibility layer to
1628 intercept syscalls that have structure arguments which layout
1629 in memory differs between the legacy ABI and the new ARM EABI
1630 (only for non "thumb" binaries). This option adds a tiny
1631 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001632
1633 The seccomp filter system will not be available when this is
1634 selected, since there is no way yet to sensibly distinguish
1635 between calling conventions during filtering.
1636
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001637 If you know you'll be using only pure EABI user space then you
1638 can say N here. If this option is not selected and you attempt
1639 to execute a legacy ABI binary then the result will be
1640 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001641 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001642
Mel Gormaneb335752009-05-13 17:34:48 +01001643config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001644 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001645
Russell King05944d72006-11-30 20:43:51 +00001646config ARCH_SPARSEMEM_ENABLE
1647 bool
1648
Russell King07a2f732008-10-01 21:39:58 +01001649config ARCH_SPARSEMEM_DEFAULT
1650 def_bool ARCH_SPARSEMEM_ENABLE
1651
Russell King05944d72006-11-30 20:43:51 +00001652config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001653 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001654
Will Deacon7b7bf492011-05-19 13:21:14 +01001655config HAVE_ARCH_PFN_VALID
1656 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1657
Steve Capperb8cd51a2014-10-09 15:29:20 -07001658config HAVE_GENERIC_RCU_GUP
1659 def_bool y
1660 depends on ARM_LPAE
1661
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001662config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001663 bool "High Memory Support"
1664 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001665 help
1666 The address space of ARM processors is only 4 Gigabytes large
1667 and it has to accommodate user address space, kernel address
1668 space as well as some memory mapped IO. That means that, if you
1669 have a large amount of physical memory and/or IO, not all of the
1670 memory can be "permanently mapped" by the kernel. The physical
1671 memory that is not permanently mapped is called "high memory".
1672
1673 Depending on the selected kernel/user memory split, minimum
1674 vmalloc space and actual amount of RAM, you may not need this
1675 option which should result in a slightly faster kernel.
1676
1677 If unsure, say n.
1678
Russell King65cec8e2009-08-17 20:02:06 +01001679config HIGHPTE
Russell King9a431bd2015-06-25 10:44:08 +01001680 bool "Allocate 2nd-level pagetables from highmem" if EXPERT
Russell King65cec8e2009-08-17 20:02:06 +01001681 depends on HIGHMEM
Russell King9a431bd2015-06-25 10:44:08 +01001682 default y
Russell Kingb4d103d2015-06-25 10:49:45 +01001683 help
1684 The VM uses one page of physical memory for each page table.
1685 For systems with a lot of processes, this can use a lot of
1686 precious low memory, eventually leading to low memory being
1687 consumed by page tables. Setting this option will allow
1688 user-space 2nd level page tables to reside in high memory.
Russell King65cec8e2009-08-17 20:02:06 +01001689
Russell Kinga5e090a2015-08-19 20:40:41 +01001690config CPU_SW_DOMAIN_PAN
1691 bool "Enable use of CPU domains to implement privileged no-access"
1692 depends on MMU && !ARM_LPAE
Jamie Iles1b8873a2010-02-02 20:25:44 +01001693 default y
1694 help
Russell Kinga5e090a2015-08-19 20:40:41 +01001695 Increase kernel security by ensuring that normal kernel accesses
1696 are unable to access userspace addresses. This can help prevent
1697 use-after-free bugs becoming an exploitable privilege escalation
1698 by ensuring that magic values (such as LIST_POISON) will always
1699 fault when dereferenced.
1700
1701 CPUs with low-vector mappings use a best-efforts implementation.
1702 Their lower 1MB needs to remain accessible for the vectors, but
1703 the remainder of userspace will become appropriately inaccessible.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704
1705config HW_PERF_EVENTS
Mark Rutlandfa8ad782015-07-06 12:23:53 +01001706 def_bool y
1707 depends on ARM_PMU
Jamie Iles1b8873a2010-02-02 20:25:44 +01001708
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001709config SYS_SUPPORTS_HUGETLBFS
1710 def_bool y
1711 depends on ARM_LPAE
1712
Catalin Marinas8d962502012-07-25 14:39:26 +01001713config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1714 def_bool y
1715 depends on ARM_LPAE
1716
Steven Capper4bfab202013-07-26 14:58:22 +01001717config ARCH_WANT_GENERAL_HUGETLB
1718 def_bool y
1719
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001720config ARM_MODULE_PLTS
1721 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1722 depends on MODULES
1723 help
1724 Allocate PLTs when loading modules so that jumps and calls whose
1725 targets are too far away for their relative offsets to be encoded
1726 in the instructions themselves can be bounced via veneers in the
1727 module's PLT. This allows modules to be allocated in the generic
1728 vmalloc area after the dedicated module memory area has been
1729 exhausted. The modules will use slightly more memory, but after
1730 rounding up to page size, the actual memory footprint is usually
1731 the same.
1732
1733 Say y if you are getting out of memory errors while loading modules
1734
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735source "mm/Kconfig"
1736
Magnus Dammc1b2d972010-07-05 10:00:11 +01001737config FORCE_MAX_ZONEORDER
Ulrich Hecht36d6c922015-08-14 15:51:06 +02001738 int "Maximum zone order"
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001739 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001740 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001741 default "11"
1742 help
1743 The kernel memory allocator divides physically contiguous memory
1744 blocks into "zones", where each zone is a power of two number of
1745 pages. This option selects the largest power of two that the kernel
1746 keeps in the memory allocator. If you need to allocate very large
1747 blocks of physically contiguous memory, then you may need to
1748 increase this value.
1749
1750 This config option is actually maximum order plus one. For example,
1751 a value of 11 means that the largest free memory block is 2^10 pages.
1752
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753config ALIGNMENT_TRAP
1754 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001755 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001757 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001759 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1761 address divisible by 4. On 32-bit ARM processors, these non-aligned
1762 fetch/store instructions will be emulated in software if you say
1763 here, which has a severe performance impact. This is necessary for
1764 correct operation of some network protocols. With an IP-only
1765 configuration it is safe to say N, otherwise say Y.
1766
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001767config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001768 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1769 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001770 default y if CPU_FEROCEON
1771 help
1772 Implement faster copy_to_user and clear_user methods for CPU
1773 cores where a 8-word STM instruction give significantly higher
1774 memory write throughput than a sequence of individual 32bit stores.
1775
1776 A possible side effect is a slight increase in scheduling latency
1777 between threads sharing the same address space if they invoke
1778 such copy operations with large buffers.
1779
1780 However, if the CPU data cache is using a write-allocate mode,
1781 this option is unlikely to provide any performance gain.
1782
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001783config SECCOMP
1784 bool
1785 prompt "Enable seccomp to safely compute untrusted bytecode"
1786 ---help---
1787 This kernel feature is useful for number crunching applications
1788 that may need to compute untrusted bytecode during their
1789 execution. By using pipes or other transports made available to
1790 the process as file descriptors supporting the read/write
1791 syscalls, it's possible to isolate those applications in
1792 their own address space using seccomp. Once seccomp is
1793 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1794 and the task is only allowed to execute a few safe syscalls
1795 defined by each seccomp mode.
1796
Stefano Stabellini06e62952013-10-15 15:47:14 +00001797config SWIOTLB
1798 def_bool y
1799
1800config IOMMU_HELPER
1801 def_bool SWIOTLB
1802
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001803config XEN_DOM0
1804 def_bool y
1805 depends on XEN
1806
1807config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001808 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001809 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001810 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001811 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001812 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001813 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001814 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001815 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001816 help
1817 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1818
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819endmenu
1820
1821menu "Boot options"
1822
Grant Likely9eb8f672011-04-28 14:27:20 -06001823config USE_OF
1824 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001825 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001826 select OF
Grant Likely9eb8f672011-04-28 14:27:20 -06001827 help
1828 Include support for flattened device tree machine descriptions.
1829
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001830config ATAGS
1831 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1832 default y
1833 help
1834 This is the traditional way of passing data to the kernel at boot
1835 time. If you are solely relying on the flattened device tree (or
1836 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1837 to remove ATAGS support from your kernel binary. If unsure,
1838 leave this to y.
1839
1840config DEPRECATED_PARAM_STRUCT
1841 bool "Provide old way to pass kernel parameters"
1842 depends on ATAGS
1843 help
1844 This was deprecated in 2001 and announced to live on for 5 years.
1845 Some old boot loaders still use this way.
1846
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847# Compressed boot loader in ROM. Yes, we really want to ask about
1848# TEXT and BSS so we preserve their values in the config files.
1849config ZBOOT_ROM_TEXT
1850 hex "Compressed ROM boot loader base address"
1851 default "0"
1852 help
1853 The physical address at which the ROM-able zImage is to be
1854 placed in the target. Platforms which normally make use of
1855 ROM-able zImage formats normally set this to a suitable
1856 value in their defconfig file.
1857
1858 If ZBOOT_ROM is not enabled, this has no effect.
1859
1860config ZBOOT_ROM_BSS
1861 hex "Compressed ROM boot loader BSS address"
1862 default "0"
1863 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001864 The base address of an area of read/write memory in the target
1865 for the ROM-able zImage which must be available while the
1866 decompressor is running. It must be large enough to hold the
1867 entire decompressed kernel plus an additional 128 KiB.
1868 Platforms which normally make use of ROM-able zImage formats
1869 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001870
1871 If ZBOOT_ROM is not enabled, this has no effect.
1872
1873config ZBOOT_ROM
1874 bool "Compressed boot loader in ROM/flash"
1875 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001876 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877 help
1878 Say Y here if you intend to execute your compressed kernel image
1879 (zImage) directly from ROM or flash. If unsure, say N.
1880
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001881config ARM_APPENDED_DTB
1882 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001883 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001884 help
1885 With this option, the boot code will look for a device tree binary
1886 (DTB) appended to zImage
1887 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1888
1889 This is meant as a backward compatibility convenience for those
1890 systems with a bootloader that can't be upgraded to accommodate
1891 the documented boot protocol using a device tree.
1892
1893 Beware that there is very little in terms of protection against
1894 this option being confused by leftover garbage in memory that might
1895 look like a DTB header after a reboot if no actual DTB is appended
1896 to zImage. Do not leave this option active in a production kernel
1897 if you don't intend to always append a DTB. Proper passing of the
1898 location into r2 of a bootloader provided DTB is always preferable
1899 to this option.
1900
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001901config ARM_ATAG_DTB_COMPAT
1902 bool "Supplement the appended DTB with traditional ATAG information"
1903 depends on ARM_APPENDED_DTB
1904 help
1905 Some old bootloaders can't be updated to a DTB capable one, yet
1906 they provide ATAGs with memory configuration, the ramdisk address,
1907 the kernel cmdline string, etc. Such information is dynamically
1908 provided by the bootloader and can't always be stored in a static
1909 DTB. To allow a device tree enabled kernel to be used with such
1910 bootloaders, this option allows zImage to extract the information
1911 from the ATAG list and store it at run time into the appended DTB.
1912
Genoud Richardd0f34a112012-06-26 16:37:59 +01001913choice
1914 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1915 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1916
1917config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1918 bool "Use bootloader kernel arguments if available"
1919 help
1920 Uses the command-line options passed by the boot loader instead of
1921 the device tree bootargs property. If the boot loader doesn't provide
1922 any, the device tree bootargs property will be used.
1923
1924config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1925 bool "Extend with bootloader kernel arguments"
1926 help
1927 The command-line arguments provided by the boot loader will be
1928 appended to the the device tree bootargs property.
1929
1930endchoice
1931
Linus Torvalds1da177e2005-04-16 15:20:36 -07001932config CMDLINE
1933 string "Default kernel command string"
1934 default ""
1935 help
1936 On some architectures (EBSA110 and CATS), there is currently no way
1937 for the boot loader to pass arguments to the kernel. For these
1938 architectures, you should supply some command-line options at build
1939 time by entering them here. As a minimum, you should specify the
1940 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1941
Victor Boivie4394c122011-05-04 17:07:55 +01001942choice
1943 prompt "Kernel command line type" if CMDLINE != ""
1944 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001945 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001946
1947config CMDLINE_FROM_BOOTLOADER
1948 bool "Use bootloader kernel arguments if available"
1949 help
1950 Uses the command-line options passed by the boot loader. If
1951 the boot loader doesn't provide any, the default kernel command
1952 string provided in CMDLINE will be used.
1953
1954config CMDLINE_EXTEND
1955 bool "Extend bootloader kernel arguments"
1956 help
1957 The command-line arguments provided by the boot loader will be
1958 appended to the default kernel command string.
1959
Alexander Holler92d20402010-02-16 19:04:53 +01001960config CMDLINE_FORCE
1961 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001962 help
1963 Always use the default kernel command string, even if the boot
1964 loader passes other arguments to the kernel.
1965 This is useful if you cannot or don't want to change the
1966 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001967endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001968
Linus Torvalds1da177e2005-04-16 15:20:36 -07001969config XIP_KERNEL
1970 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001971 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 help
1973 Execute-In-Place allows the kernel to run from non-volatile storage
1974 directly addressable by the CPU, such as NOR flash. This saves RAM
1975 space since the text section of the kernel is not loaded from flash
1976 to RAM. Read-write sections, such as the data section and stack,
1977 are still copied to RAM. The XIP kernel is not compressed since
1978 it has to run directly from flash, so it will take more space to
1979 store it. The flash address used to link the kernel object files,
1980 and for storing it, is configuration dependent. Therefore, if you
1981 say Y here, you must know the proper physical address where to
1982 store the kernel image depending on your own flash memory usage.
1983
1984 Also note that the make target becomes "make xipImage" rather than
1985 "make zImage" or "make Image". The final kernel binary to put in
1986 ROM memory will be arch/arm/boot/xipImage.
1987
1988 If unsure, say N.
1989
1990config XIP_PHYS_ADDR
1991 hex "XIP Kernel Physical Location"
1992 depends on XIP_KERNEL
1993 default "0x00080000"
1994 help
1995 This is the physical address in your flash memory the kernel will
1996 be linked for and stored to. This address is dependent on your
1997 own flash usage.
1998
Richard Purdiec587e4a2007-02-06 21:29:00 +01001999config KEXEC
2000 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002001 depends on (!SMP || PM_SLEEP_SMP)
Arnd Bergmanncb1293e2015-05-26 15:40:44 +01002002 depends on !CPU_V7M
Dave Young2965faa2015-09-09 15:38:55 -07002003 select KEXEC_CORE
Richard Purdiec587e4a2007-02-06 21:29:00 +01002004 help
2005 kexec is a system call that implements the ability to shutdown your
2006 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002007 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002008 you can start any kernel with it, not just Linux.
2009
2010 It is an ongoing process to be certain the hardware in a machine
2011 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002012 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002013
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002014config ATAGS_PROC
2015 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002016 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002017 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002018 help
2019 Should the atags used to boot the kernel be exported in an "atags"
2020 file in procfs. Useful with kexec.
2021
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002022config CRASH_DUMP
2023 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002024 help
2025 Generate crash dump after being started by kexec. This should
2026 be normally only set in special crash dump kernels which are
2027 loaded in the main kernel with kexec-tools into a specially
2028 reserved region and then later executed after a crash by
2029 kdump/kexec. The crash dump kernel must be compiled to a
2030 memory address not used by the main kernel
2031
2032 For more details see Documentation/kdump/kdump.txt
2033
Eric Miaoe69edc792010-07-05 15:56:50 +02002034config AUTO_ZRELADDR
2035 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002036 help
2037 ZRELADDR is the physical address where the decompressed kernel
2038 image will be placed. If AUTO_ZRELADDR is selected, the address
2039 will be determined at run-time by masking the current IP with
2040 0xf8000000. This assumes the zImage being placed in the first 128MB
2041 from start of memory.
2042
Linus Torvalds1da177e2005-04-16 15:20:36 -07002043endmenu
2044
Russell Kingac9d7ef2008-08-18 17:26:00 +01002045menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048
Russell Kingac9d7ef2008-08-18 17:26:00 +01002049source "drivers/cpuidle/Kconfig"
2050
2051endmenu
2052
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053menu "Floating point emulation"
2054
2055comment "At least one emulation must be selected"
2056
2057config FPE_NWFPE
2058 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002059 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060 ---help---
2061 Say Y to include the NWFPE floating point emulator in the kernel.
2062 This is necessary to run most binaries. Linux does not currently
2063 support floating point hardware so you need to say Y here even if
2064 your machine has an FPA or floating point co-processor podule.
2065
2066 You may say N here if you are going to load the Acorn FPEmulator
2067 early in the bootup.
2068
2069config FPE_NWFPE_XP
2070 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002071 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002072 help
2073 Say Y to include 80-bit support in the kernel floating-point
2074 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2075 Note that gcc does not generate 80-bit operations by default,
2076 so in most cases this option only enlarges the size of the
2077 floating point emulator without any good reason.
2078
2079 You almost surely want to say N here.
2080
2081config FPE_FASTFPE
2082 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002083 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084 ---help---
2085 Say Y here to include the FAST floating point emulator in the kernel.
2086 This is an experimental much faster emulator which now also has full
2087 precision for the mantissa. It does not support any exceptions.
2088 It is very simple, and approximately 3-6 times faster than NWFPE.
2089
2090 It should be sufficient for most programs. It may be not suitable
2091 for scientific calculations, but you have to check this for yourself.
2092 If you do not feel you need a faster FP emulation you should better
2093 choose NWFPE.
2094
2095config VFP
2096 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002097 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002098 help
2099 Say Y to include VFP support code in the kernel. This is needed
2100 if your hardware includes a VFP unit.
2101
2102 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2103 release notes and additional status information.
2104
2105 Say N if your target does not have VFP hardware.
2106
Catalin Marinas25ebee02007-09-25 15:22:24 +01002107config VFPv3
2108 bool
2109 depends on VFP
2110 default y if CPU_V7
2111
Catalin Marinasb5872db2008-01-10 19:16:17 +01002112config NEON
2113 bool "Advanced SIMD (NEON) Extension support"
2114 depends on VFPv3 && CPU_V7
2115 help
2116 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2117 Extension.
2118
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002119config KERNEL_MODE_NEON
2120 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002121 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002122 help
2123 Say Y to include support for NEON in kernel mode.
2124
Linus Torvalds1da177e2005-04-16 15:20:36 -07002125endmenu
2126
2127menu "Userspace binary formats"
2128
2129source "fs/Kconfig.binfmt"
2130
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131endmenu
2132
2133menu "Power management options"
2134
Russell Kingeceab4a2005-11-15 11:31:41 +00002135source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002136
Johannes Bergf4cb5702007-12-08 02:14:00 +01002137config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002138 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002139 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002140 def_bool y
2141
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002142config ARM_CPU_SUSPEND
2143 def_bool PM_SLEEP
2144
Sebastian Capella603fb422014-03-25 01:20:29 +01002145config ARCH_HIBERNATION_POSSIBLE
2146 bool
2147 depends on MMU
2148 default y if ARCH_SUSPEND_POSSIBLE
2149
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150endmenu
2151
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002152source "net/Kconfig"
2153
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002154source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002155
Kumar Gala916f7432015-02-26 15:49:09 -06002156source "drivers/firmware/Kconfig"
2157
Linus Torvalds1da177e2005-04-16 15:20:36 -07002158source "fs/Kconfig"
2159
Linus Torvalds1da177e2005-04-16 15:20:36 -07002160source "arch/arm/Kconfig.debug"
2161
2162source "security/Kconfig"
2163
2164source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002165if CRYPTO
2166source "arch/arm/crypto/Kconfig"
2167endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002168
2169source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002170
2171source "arch/arm/kvm/Kconfig"