blob: 00623a2c5d0cc239caf09e1c938ce7688e11d0bf [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Catalin Marinas74634492012-07-30 14:41:09 -07004 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Kees Cook2b68f6c2015-04-14 15:48:00 -07005 select ARCH_HAS_ELF_RANDOMIZE
Mark Rutland3d067702012-10-30 12:13:42 +00006 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Russell King171b3f02013-09-12 21:24:42 +01007 select ARCH_HAVE_CUSTOM_GPIO_H
Riku Voipio957e3fa2014-12-12 16:57:44 -08008 select ARCH_HAS_GCOV_PROFILE_ALL
Mark Salterd7018842013-10-07 22:07:58 -04009 select ARCH_MIGHT_HAVE_PC_PARPORT
Peter Zijlstra4badad32014-06-06 19:53:16 +020010 select ARCH_SUPPORTS_ATOMIC_RMW
Kim Phillips017f1612013-11-06 05:15:24 +010011 select ARCH_USE_BUILTIN_BSWAP
Will Deacon0cbad9c2013-10-09 17:19:22 +010012 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010013 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010014 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010015 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010016 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacondce5c9e2013-12-17 19:50:16 +010017 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
Borislav Petkovb01aec92015-05-21 19:59:31 +020018 select EDAC_SUPPORT
19 select EDAC_ATOMIC_SCRUB
Laura Abbott36d0fd22014-10-09 15:26:42 -070020 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010021 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010023 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010024 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
Geert Uytterhoeven7c070052015-04-01 13:37:11 +010026 select GENERIC_IRQ_SHOW_LEVEL
Russell Kingb1b3f492012-10-06 17:12:25 +010027 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070028 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010029 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_STRNCPY_FROM_USER
31 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010032 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010033 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090034 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010035 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Arnd Bergmanncfeec792015-05-26 15:38:01 +010036 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32
37 select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32
Kees Cook91702172013-11-09 00:51:56 +010038 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010039 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010040 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010041 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010042 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010043 select HAVE_C_RECORDMCOUNT
44 select HAVE_DEBUG_KMEMLEAK
45 select HAVE_DMA_API_DEBUG
46 select HAVE_DMA_ATTRS
47 select HAVE_DMA_CONTIGUOUS if MMU
Arnd Bergmanncfeec792015-05-26 15:38:01 +010048 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32
Will Deacondce5c9e2013-12-17 19:50:16 +010049 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010050 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
51 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
52 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
53 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
55 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010056 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010057 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070058 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010059 select HAVE_KERNEL_LZMA
60 select HAVE_KERNEL_LZO
61 select HAVE_KERNEL_XZ
Arnd Bergmanncb1293e2015-05-26 15:40:44 +010062 select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080063 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010064 select HAVE_MEMBLOCK
Ard Biesheuvel7d485f62014-11-24 16:54:35 +010065 select HAVE_MOD_ARCH_SPECIFIC
Russell Kingb1b3f492012-10-06 17:12:25 +010066 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080067 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010068 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010069 select HAVE_PERF_REGS
70 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070071 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010072 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010073 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070074 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070075 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010076 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010077 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040078 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010079 select OLD_SIGACTION
80 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010081 select PERF_USE_VMALLOC
82 select RTC_LIB
83 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010084 # Above selects are sorted alphabetically; please add new ones
85 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 help
87 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000088 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000090 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 Europe. There is an ARM Linux project with a web page at
92 <http://www.arm.linux.org.uk/>.
93
Russell King74facff2011-06-02 11:16:22 +010094config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070095 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010096 bool
97
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020098config NEED_SG_DMA_LENGTH
99 bool
100
101config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200102 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100103 select ARM_HAS_SG_CHAIN
104 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200105
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900106if ARM_DMA_USE_IOMMU
107
108config ARM_DMA_IOMMU_ALIGNMENT
109 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
110 range 4 9
111 default 8
112 help
113 DMA mapping framework by default aligns all buffers to the smallest
114 PAGE_SIZE order which is greater than or equal to the requested buffer
115 size. This works well for buffers up to a few hundreds kilobytes, but
116 for larger buffers it just a waste of address space. Drivers which has
117 relatively small addressing window (like 64Mib) might run out of
118 virtual space with just a few allocations.
119
120 With this parameter you can specify the maximum PAGE_SIZE order for
121 DMA IOMMU buffers. Larger buffers will be aligned only to this
122 specified order. The order is expressed as a power of two multiplied
123 by the PAGE_SIZE.
124
125endif
126
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100127config MIGHT_HAVE_PCI
128 bool
129
Ralf Baechle75e71532007-02-09 17:08:58 +0000130config SYS_SUPPORTS_APM_EMULATION
131 bool
132
Linus Walleijbc581772009-09-15 17:30:37 +0100133config HAVE_TCM
134 bool
135 select GENERIC_ALLOCATOR
136
Russell Kinge119bff2010-01-10 17:23:29 +0000137config HAVE_PROC_CPU
138 bool
139
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700140config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000141 bool
Al Viro5ea81762007-02-11 15:41:31 +0000142
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143config EISA
144 bool
145 ---help---
146 The Extended Industry Standard Architecture (EISA) bus was
147 developed as an open alternative to the IBM MicroChannel bus.
148
149 The EISA bus provided some of the features of the IBM MicroChannel
150 bus while maintaining backward compatibility with cards made for
151 the older ISA bus. The EISA bus saw limited use between 1988 and
152 1995 when it was made obsolete by the PCI bus.
153
154 Say Y here if you are building a kernel for an EISA-based machine.
155
156 Otherwise, say N.
157
158config SBUS
159 bool
160
Russell Kingf16fb1e2007-04-28 09:59:37 +0100161config STACKTRACE_SUPPORT
162 bool
163 default y
164
Nicolas Pitref76e9152008-04-24 01:31:46 -0400165config HAVE_LATENCYTOP_SUPPORT
166 bool
167 depends on !SMP
168 default y
169
Russell Kingf16fb1e2007-04-28 09:59:37 +0100170config LOCKDEP_SUPPORT
171 bool
172 default y
173
Russell King7ad1bcb2006-08-27 12:07:02 +0100174config TRACE_IRQFLAGS_SUPPORT
175 bool
Arnd Bergmanncb1293e2015-05-26 15:40:44 +0100176 default !CPU_V7M
Russell King7ad1bcb2006-08-27 12:07:02 +0100177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178config RWSEM_XCHGADD_ALGORITHM
179 bool
Will Deacon8a874112014-05-02 17:06:19 +0100180 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
David Howellsf0d1b0b2006-12-08 02:37:49 -0800182config ARCH_HAS_ILOG2_U32
183 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800184
185config ARCH_HAS_ILOG2_U64
186 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800187
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100188config ARCH_HAS_BANDGAP
189 bool
190
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800191config GENERIC_HWEIGHT
192 bool
193 default y
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195config GENERIC_CALIBRATE_DELAY
196 bool
197 default y
198
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100199config ARCH_MAY_HAVE_PC_FDC
200 bool
201
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800202config ZONE_DMA
203 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800204
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800205config NEED_DMA_MAP_STATE
206 def_bool y
207
David A. Longc7edc9e2014-03-07 11:23:04 -0500208config ARCH_SUPPORTS_UPROBES
209 def_bool y
210
Rob Herring58af4a22012-03-20 14:33:01 -0500211config ARCH_HAS_DMA_SET_COHERENT_MASK
212 bool
213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214config GENERIC_ISA_DMA
215 bool
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217config FIQ
218 bool
219
Rob Herring13a50452012-02-07 09:28:22 -0600220config NEED_RET_TO_USER
221 bool
222
Al Viro034d2f52005-12-19 16:27:59 -0500223config ARCH_MTD_XIP
224 bool
225
Hyok S. Choic760fc12006-03-27 15:18:50 +0100226config VECTORS_BASE
227 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900228 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100229 default DRAM_BASE if REMAP_VECTORS_TO_RAM
230 default 0x00000000
231 help
Russell King19accfd2013-07-04 11:40:32 +0100232 The base address of exception vectors. This must be two pages
233 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100234
Russell Kingdc21af92011-01-04 19:09:43 +0000235config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100236 bool "Patch physical to virtual translations at runtime" if EMBEDDED
237 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100238 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000239 depends on !ARCH_REALVIEW || !SPARSEMEM
240 help
Russell King111e9a52011-05-12 10:02:42 +0100241 Patch phys-to-virt and virt-to-phys translation functions at
242 boot and module load time according to the position of the
243 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000244
Russell King111e9a52011-05-12 10:02:42 +0100245 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100246 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000247
Russell Kingc1beced2011-08-10 10:23:45 +0100248 Only disable this option if you know that you do not require
249 this feature (eg, building a kernel for a single machine) and
250 you need to shrink the kernel to the minimal size.
251
Rob Herringc334bc12012-03-04 22:03:33 -0600252config NEED_MACH_IO_H
253 bool
254 help
255 Select this when mach/io.h is required to provide special
256 definitions for this platform. The need for mach/io.h should
257 be avoided when possible.
258
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400259config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400260 bool
Russell King111e9a52011-05-12 10:02:42 +0100261 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400262 Select this when mach/memory.h is required to provide special
263 definitions for this platform. The need for mach/memory.h should
264 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400265
266config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100267 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100268 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100269 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100270 default 0x00000000 if ARCH_EBSA110 || \
271 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
272 ARCH_FOOTBRIDGE || \
273 ARCH_INTEGRATOR || \
274 ARCH_IOP13XX || \
275 ARCH_KS8695 || \
276 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
277 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
278 default 0x20000000 if ARCH_S5PV210
279 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
280 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
281 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
282 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
283 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400284 help
285 Please provide the physical address corresponding to the
286 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000287
Simon Glass87e040b2011-08-16 23:44:26 +0100288config GENERIC_BUG
289 def_bool y
290 depends on BUG
291
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700292config PGTABLE_LEVELS
293 int
294 default 3 if ARM_LPAE
295 default 2
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297source "init/Kconfig"
298
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700299source "kernel/Kconfig.freezer"
300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301menu "System Type"
302
Hyok S. Choi3c427972009-07-24 12:35:00 +0100303config MMU
304 bool "MMU-based Paged Memory Management Support"
305 default y
306 help
307 Select if you want MMU-based virtualised addressing space
308 support by paged memory management. If unsure, say 'Y'.
309
Russell Kingccf50e22010-03-15 19:03:06 +0000310#
311# The "ARM system type" choice list is ordered alphabetically by option
312# text. Please add new entries in the option alphabetic order.
313#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314choice
315 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100316 default ARCH_VERSATILE if !MMU
317 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Rob Herring387798b2012-09-06 13:41:12 -0500319config ARCH_MULTIPLATFORM
320 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100321 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600322 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700323 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500324 select ARM_PATCH_PHYS_VIRT
325 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500326 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600327 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600328 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100329 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500330 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600331 select SPARSE_IRQ
332 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600333
Stefan Agner9c77bc42015-05-20 00:03:51 +0200334config ARM_SINGLE_ARMV7M
335 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
336 depends on !MMU
337 select ARCH_WANT_OPTIONAL_GPIOLIB
338 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200339 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200340 select CLKSRC_OF
341 select COMMON_CLK
342 select CPU_V7M
343 select GENERIC_CLOCKEVENTS
344 select NO_IOPORT_MAP
345 select SPARSE_IRQ
346 select USE_OF
347
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100348config ARCH_REALVIEW
349 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100350 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100351 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100352 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200353 select COMMON_CLK
354 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100355 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100356 select GPIO_PL061 if GPIOLIB
357 select ICST
358 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000359 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000360 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100361 help
362 This enables support for ARM Ltd RealView boards.
363
364config ARCH_VERSATILE
365 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100366 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100367 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100368 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100369 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100370 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100371 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900372 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000373 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000374 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100375 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000376 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100377 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100378 help
379 This enables support for ARM Ltd Versatile board.
380
Russell King93e22562012-10-12 14:20:52 +0100381config ARCH_CLPS711X
382 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400383 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400384 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400385 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100386 select COMMON_CLK
387 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400388 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400389 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400390 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100391 help
392 Support for Cirrus Logic 711x/721x/731x based boards.
393
Russell King788c9702009-04-26 14:21:59 +0100394config ARCH_GEMINI
395 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100396 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200397 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100398 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200399 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100400 help
401 Support for the Cortina Systems Gemini family SoCs
402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403config ARCH_EBSA110
404 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100405 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000406 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100407 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600408 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400409 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700410 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 help
412 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000413 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 Ethernet interface, two PCMCIA sockets, two serial ports and a
415 parallel port.
416
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000417config ARCH_EP93XX
418 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100419 select ARCH_HAS_HOLES_MEMORYMODEL
420 select ARCH_REQUIRE_GPIOLIB
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000421 select ARM_AMBA
422 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100423 select CLKDEV_LOOKUP
Linus Walleij000bc172015-06-15 14:34:03 +0200424 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100425 select CPU_ARM920T
Linus Walleij000bc172015-06-15 14:34:03 +0200426 select GENERIC_CLOCKEVENTS
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000427 help
428 This enables support for the Cirrus EP93xx series of CPUs.
429
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430config ARCH_FOOTBRIDGE
431 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000432 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000434 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200435 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600436 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400437 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000438 help
439 Support for systems based on the DC21285 companion chip
440 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100442config ARCH_NETX
443 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100444 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100445 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000446 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100447 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000448 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100449 This enables support for systems based on the Hilscher NetX Soc
450
Russell King3b938be2007-05-12 11:25:44 +0100451config ARCH_IOP13XX
452 bool "IOP13xx-based"
453 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100454 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400455 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600456 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100457 select PCI
458 select PLAT_IOP
459 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000460 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100461 help
462 Support for Intel's IOP13XX (XScale) family of processors.
463
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100464config ARCH_IOP32X
465 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100466 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100467 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000468 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200469 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600470 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100471 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100472 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000473 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100474 Support for Intel's 80219 and IOP32X (XScale) family of
475 processors.
476
477config ARCH_IOP33X
478 bool "IOP33x-based"
479 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100480 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000481 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200482 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600483 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100484 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100485 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100486 help
487 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488
Russell King3b938be2007-05-12 11:25:44 +0100489config ARCH_IXP4XX
490 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100491 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500492 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100493 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100494 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100495 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000496 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100497 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100498 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100499 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600500 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200501 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100502 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100503 help
Russell King3b938be2007-05-12 11:25:44 +0100504 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100505
Saeed Bisharaedabd382009-08-06 15:12:43 +0300506config ARCH_DOVE
507 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300508 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100509 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300510 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100511 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100512 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100513 select PINCTRL
514 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200515 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300516 help
517 Support for the Marvell Dove SoC 88AP510
518
Russell King788c9702009-04-26 14:21:59 +0100519config ARCH_MV78XX0
520 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700521 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100522 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100523 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100524 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100525 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200526 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100527 help
528 Support for the following Marvell MV78xx0 series SoCs:
529 MV781x0, MV782x0.
530
531config ARCH_ORION5X
532 bool "Marvell Orion"
533 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700534 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100535 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100536 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100537 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100538 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200539 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100540 help
541 Support for the following Marvell Orion 5x series SoCs:
542 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
543 Orion-2 (5281), Orion-1-90 (6183).
544
545config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500546 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100547 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100548 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100549 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100550 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100551 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800552 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800553 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800554 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800555 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100556 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400557 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100558 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500559 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100560
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100561config ARCH_KS8695
562 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100563 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200564 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100565 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200566 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100567 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100568 help
569 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
570 System-on-Chip devices.
571
Russell King788c9702009-04-26 14:21:59 +0100572config ARCH_W90X900
573 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100574 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100575 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100576 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100577 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100578 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200579 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100580 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
581 At present, the w90x900 has been renamed nuc900, regarding
582 the ARM series product line, you can login the following
583 link address to know more.
584
585 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
586 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400587
Russell King93e22562012-10-12 14:20:52 +0100588config ARCH_LPC32XX
589 bool "NXP LPC32XX"
590 select ARCH_REQUIRE_GPIOLIB
591 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000592 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100593 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100594 select CPU_ARM926T
595 select GENERIC_CLOCKEVENTS
596 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100597 select USE_OF
598 help
599 Support for the NXP LPC32XX family of processors
600
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700602 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100603 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100604 select ARCH_MTD_XIP
605 select ARCH_REQUIRE_GPIOLIB
606 select ARM_CPU_SUSPEND if PM
607 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100608 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100609 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100610 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200611 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100612 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800613 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100614 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100615 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100616 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800617 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800618 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000619 help
eric miao2c8086a2007-09-11 19:13:17 -0700620 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100622config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100623 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100624 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100625 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900626 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900627 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100628 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800629 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800630 select HAVE_ARM_TWD if SMP
Dave Martin3b556582011-12-07 15:38:04 +0000631 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000632 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000633 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700634 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200635 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100636 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900637 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100638 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000639 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100640 Support for Renesas ARM SoC platforms using a non-multiplatform
641 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
642 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000643
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644config ARCH_RPC
645 bool "RiscPC"
646 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100647 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100648 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000649 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100650 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100651 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200652 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100653 select HAVE_PATA_PLATFORM
654 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600655 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400656 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700657 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100658 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 help
660 On the Acorn Risc-PC, Linux can support the internal IDE disk and
661 CD-ROM interface, serial and parallel port, and the floppy drive.
662
663config ARCH_SA1100
664 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100665 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700666 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100667 select ARCH_SPARSEMEM_ENABLE
668 select CLKDEV_LOOKUP
669 select CLKSRC_MMIO
670 select CPU_FREQ
671 select CPU_SA1100
672 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200673 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100674 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100675 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100676 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400677 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100678 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000679 help
680 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900682config ARCH_S3C24XX
683 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900684 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100685 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200687 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800688 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900689 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900690 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900691 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100692 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900693 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600694 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900695 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900697 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
698 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
699 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
700 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900701
Ben Dooksa08ab632008-10-21 14:06:39 +0100702config ARCH_S3C64XX
703 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900704 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200705 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100706 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100707 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100708 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200709 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900710 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900711 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800712 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900713 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900714 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900715 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100716 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700717 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100718 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100719 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100720 select S3C_DEV_NAND
721 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900722 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900723 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900724 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100725 help
726 Samsung S3C64XX series based systems
727
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100728config ARCH_DAVINCI
729 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100730 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700731 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100732 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700733 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100734 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100735 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100736 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500737 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530738 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100739 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100740 help
741 Support for TI's DaVinci platform.
742
Tony Lindgrena0694862013-01-11 11:24:20 -0800743config ARCH_OMAP1
744 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600745 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100746 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800747 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100748 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200749 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100750 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100751 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800752 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800753 select HAVE_IDE
754 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700755 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800756 select NEED_MACH_IO_H if PCCARD
757 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700758 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100759 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800760 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800761
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762endchoice
763
Rob Herring387798b2012-09-06 13:41:12 -0500764menu "Multiple platform selection"
765 depends on ARCH_MULTIPLATFORM
766
767comment "CPU Core family selection"
768
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100769config ARCH_MULTI_V4
770 bool "ARMv4 based platforms (FA526)"
771 depends on !ARCH_MULTI_V6_V7
772 select ARCH_MULTI_V4_V5
773 select CPU_FA526
774
Rob Herring387798b2012-09-06 13:41:12 -0500775config ARCH_MULTI_V4T
776 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500777 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100778 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200779 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
780 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
781 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500782
783config ARCH_MULTI_V5
784 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500785 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100786 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100787 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200788 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
789 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500790
791config ARCH_MULTI_V4_V5
792 bool
793
794config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800795 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500796 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600797 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500798
799config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800800 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500801 default y
802 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100803 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600804 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500805
806config ARCH_MULTI_V6_V7
807 bool
Rob Herring9352b052014-01-31 15:36:10 -0600808 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500809
810config ARCH_MULTI_CPU_AUTO
811 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
812 select ARCH_MULTI_V5
813
814endmenu
815
Rob Herring05e2a3d2013-12-05 10:04:54 -0600816config ARCH_VIRT
817 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600818 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600819 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600820 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600821 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600822
Russell Kingccf50e22010-03-15 19:03:06 +0000823#
824# This is sorted alphabetically by mach-* pathname. However, plat-*
825# Kconfigs may be included either alphabetically (according to the
826# plat- suffix) or along side the corresponding mach-* source.
827#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200828source "arch/arm/mach-mvebu/Kconfig"
829
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200830source "arch/arm/mach-alpine/Kconfig"
831
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100832source "arch/arm/mach-asm9260/Kconfig"
833
Russell King95b8f202010-01-14 11:43:54 +0000834source "arch/arm/mach-at91/Kconfig"
835
Anders Berg1d22924e2014-05-23 11:08:35 +0200836source "arch/arm/mach-axxia/Kconfig"
837
Christian Daudt8ac49e02012-11-19 09:46:10 -0800838source "arch/arm/mach-bcm/Kconfig"
839
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200840source "arch/arm/mach-berlin/Kconfig"
841
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842source "arch/arm/mach-clps711x/Kconfig"
843
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300844source "arch/arm/mach-cns3xxx/Kconfig"
845
Russell King95b8f202010-01-14 11:43:54 +0000846source "arch/arm/mach-davinci/Kconfig"
847
Baruch Siachdf8d7422015-01-14 10:40:30 +0200848source "arch/arm/mach-digicolor/Kconfig"
849
Russell King95b8f202010-01-14 11:43:54 +0000850source "arch/arm/mach-dove/Kconfig"
851
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000852source "arch/arm/mach-ep93xx/Kconfig"
853
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854source "arch/arm/mach-footbridge/Kconfig"
855
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200856source "arch/arm/mach-gemini/Kconfig"
857
Rob Herring387798b2012-09-06 13:41:12 -0500858source "arch/arm/mach-highbank/Kconfig"
859
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800860source "arch/arm/mach-hisi/Kconfig"
861
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862source "arch/arm/mach-integrator/Kconfig"
863
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100864source "arch/arm/mach-iop32x/Kconfig"
865
866source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
Dan Williams285f5fa2006-12-07 02:59:39 +0100868source "arch/arm/mach-iop13xx/Kconfig"
869
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870source "arch/arm/mach-ixp4xx/Kconfig"
871
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400872source "arch/arm/mach-keystone/Kconfig"
873
Russell King95b8f202010-01-14 11:43:54 +0000874source "arch/arm/mach-ks8695/Kconfig"
875
Carlo Caione3b8f5032014-09-10 22:16:59 +0200876source "arch/arm/mach-meson/Kconfig"
877
Jonas Jensen17723fd32013-12-18 13:58:45 +0100878source "arch/arm/mach-moxart/Kconfig"
879
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200880source "arch/arm/mach-mv78xx0/Kconfig"
881
Shawn Guo3995eb82012-09-13 19:48:07 +0800882source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883
Matthias Bruggerf682a212014-05-13 01:06:13 +0200884source "arch/arm/mach-mediatek/Kconfig"
885
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800886source "arch/arm/mach-mxs/Kconfig"
887
Russell King95b8f202010-01-14 11:43:54 +0000888source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800889
Russell King95b8f202010-01-14 11:43:54 +0000890source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000891
Daniel Tang9851ca52013-06-11 18:40:17 +1000892source "arch/arm/mach-nspire/Kconfig"
893
Tony Lindgrend48af152005-07-10 19:58:17 +0100894source "arch/arm/plat-omap/Kconfig"
895
896source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
Tony Lindgren1dbae812005-11-10 14:26:51 +0000898source "arch/arm/mach-omap2/Kconfig"
899
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400900source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400901
Rob Herring387798b2012-09-06 13:41:12 -0500902source "arch/arm/mach-picoxcell/Kconfig"
903
Russell King95b8f202010-01-14 11:43:54 +0000904source "arch/arm/mach-pxa/Kconfig"
905source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906
Russell King95b8f202010-01-14 11:43:54 +0000907source "arch/arm/mach-mmp/Kconfig"
908
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600909source "arch/arm/mach-qcom/Kconfig"
910
Russell King95b8f202010-01-14 11:43:54 +0000911source "arch/arm/mach-realview/Kconfig"
912
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200913source "arch/arm/mach-rockchip/Kconfig"
914
Russell King95b8f202010-01-14 11:43:54 +0000915source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300916
Rob Herring387798b2012-09-06 13:41:12 -0500917source "arch/arm/mach-socfpga/Kconfig"
918
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100919source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100920
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100921source "arch/arm/mach-sti/Kconfig"
922
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900923source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924
Ben Dooks431107e2010-01-26 10:11:04 +0900925source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100926
Kukjin Kim170f4e42010-02-24 16:40:44 +0900927source "arch/arm/mach-s5pv210/Kconfig"
928
Kukjin Kim83014572011-11-06 13:54:56 +0900929source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500930source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900931
Russell King882d01f2010-03-02 23:40:15 +0000932source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933
Maxime Ripard3b526342012-11-08 12:40:16 +0100934source "arch/arm/mach-sunxi/Kconfig"
935
Barry Song156a0992012-08-23 13:41:58 +0800936source "arch/arm/mach-prima2/Kconfig"
937
Erik Gillingc5f80062010-01-21 16:53:02 -0800938source "arch/arm/mach-tegra/Kconfig"
939
Russell King95b8f202010-01-14 11:43:54 +0000940source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900942source "arch/arm/mach-uniphier/Kconfig"
943
Russell King95b8f202010-01-14 11:43:54 +0000944source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
946source "arch/arm/mach-versatile/Kconfig"
947
Russell Kingceade892010-02-11 21:44:53 +0000948source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000949source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000950
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300951source "arch/arm/mach-vt8500/Kconfig"
952
wanzongshun7ec80dd2008-12-03 03:55:38 +0100953source "arch/arm/mach-w90x900/Kconfig"
954
Jun Nieacede512015-04-28 17:18:05 +0800955source "arch/arm/mach-zx/Kconfig"
956
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600957source "arch/arm/mach-zynq/Kconfig"
958
Stefan Agner499f1642015-05-21 00:35:44 +0200959# ARMv7-M architecture
960config ARCH_EFM32
961 bool "Energy Micro efm32"
962 depends on ARM_SINGLE_ARMV7M
963 select ARCH_REQUIRE_GPIOLIB
964 help
965 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
966 processors.
967
968config ARCH_LPC18XX
969 bool "NXP LPC18xx/LPC43xx"
970 depends on ARM_SINGLE_ARMV7M
971 select ARCH_HAS_RESET_CONTROLLER
972 select ARM_AMBA
973 select CLKSRC_LPC32XX
974 select PINCTRL
975 help
976 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
977 high performance microcontrollers.
978
979config ARCH_STM32
980 bool "STMicrolectronics STM32"
981 depends on ARM_SINGLE_ARMV7M
982 select ARCH_HAS_RESET_CONTROLLER
983 select ARMV7M_SYSTICK
Maxime Coquelin25263182015-05-22 23:50:52 +0200984 select CLKSRC_STM32
Stefan Agner499f1642015-05-21 00:35:44 +0200985 select RESET_CONTROLLER
986 help
987 Support for STMicroelectronics STM32 processors.
988
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989# Definitions to make life easier
990config ARCH_ACORN
991 bool
992
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100993config PLAT_IOP
994 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700995 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100996
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400997config PLAT_ORION
998 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100999 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +01001000 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001001 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +02001002 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001003
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001004config PLAT_ORION_LEGACY
1005 bool
1006 select PLAT_ORION
1007
Eric Miaobd5ce432009-01-20 12:06:01 +08001008config PLAT_PXA
1009 bool
1010
Russell Kingf4b8b312010-01-14 12:48:06 +00001011config PLAT_VERSATILE
1012 bool
1013
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001014source "arch/arm/firmware/Kconfig"
1015
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016source arch/arm/mm/Kconfig
1017
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001018config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001019 bool "Enable iWMMXt support"
1020 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1021 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001022 help
1023 Enable support for iWMMXt context switching at run time if
1024 running on a CPU that supports it.
1025
eric miao52108642010-12-13 09:42:34 +01001026config MULTI_IRQ_HANDLER
1027 bool
1028 help
1029 Allow each machine to specify it's own IRQ handler at run time.
1030
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001031if !MMU
1032source "arch/arm/Kconfig-nommu"
1033endif
1034
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001035config PJ4B_ERRATA_4742
1036 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1037 depends on CPU_PJ4B && MACH_ARMADA_370
1038 default y
1039 help
1040 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1041 Event (WFE) IDLE states, a specific timing sensitivity exists between
1042 the retiring WFI/WFE instructions and the newly issued subsequent
1043 instructions. This sensitivity can result in a CPU hang scenario.
1044 Workaround:
1045 The software must insert either a Data Synchronization Barrier (DSB)
1046 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1047 instruction
1048
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001049config ARM_ERRATA_326103
1050 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1051 depends on CPU_V6
1052 help
1053 Executing a SWP instruction to read-only memory does not set bit 11
1054 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1055 treat the access as a read, preventing a COW from occurring and
1056 causing the faulting task to livelock.
1057
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001058config ARM_ERRATA_411920
1059 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001060 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001061 help
1062 Invalidation of the Instruction Cache operation can
1063 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1064 It does not affect the MPCore. This option enables the ARM Ltd.
1065 recommended workaround.
1066
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001067config ARM_ERRATA_430973
1068 bool "ARM errata: Stale prediction on replaced interworking branch"
1069 depends on CPU_V7
1070 help
1071 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001072 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001073 interworking branch is replaced with another code sequence at the
1074 same virtual address, whether due to self-modifying code or virtual
1075 to physical address re-mapping, Cortex-A8 does not recover from the
1076 stale interworking branch prediction. This results in Cortex-A8
1077 executing the new code sequence in the incorrect ARM or Thumb state.
1078 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1079 and also flushes the branch target cache at every context switch.
1080 Note that setting specific bits in the ACTLR register may not be
1081 available in non-secure mode.
1082
Catalin Marinas855c5512009-04-30 17:06:15 +01001083config ARM_ERRATA_458693
1084 bool "ARM errata: Processor deadlock when a false hazard is created"
1085 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001086 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001087 help
1088 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1089 erratum. For very specific sequences of memory operations, it is
1090 possible for a hazard condition intended for a cache line to instead
1091 be incorrectly associated with a different cache line. This false
1092 hazard might then cause a processor deadlock. The workaround enables
1093 the L1 caching of the NEON accesses and disables the PLD instruction
1094 in the ACTLR register. Note that setting specific bits in the ACTLR
1095 register may not be available in non-secure mode.
1096
Catalin Marinas0516e462009-04-30 17:06:20 +01001097config ARM_ERRATA_460075
1098 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1099 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001100 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001101 help
1102 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1103 erratum. Any asynchronous access to the L2 cache may encounter a
1104 situation in which recent store transactions to the L2 cache are lost
1105 and overwritten with stale memory contents from external memory. The
1106 workaround disables the write-allocate mode for the L2 cache via the
1107 ACTLR register. Note that setting specific bits in the ACTLR register
1108 may not be available in non-secure mode.
1109
Will Deacon9f050272010-09-14 09:51:43 +01001110config ARM_ERRATA_742230
1111 bool "ARM errata: DMB operation may be faulty"
1112 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001113 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001114 help
1115 This option enables the workaround for the 742230 Cortex-A9
1116 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1117 between two write operations may not ensure the correct visibility
1118 ordering of the two writes. This workaround sets a specific bit in
1119 the diagnostic register of the Cortex-A9 which causes the DMB
1120 instruction to behave as a DSB, ensuring the correct behaviour of
1121 the two writes.
1122
Will Deacona672e992010-09-14 09:53:02 +01001123config ARM_ERRATA_742231
1124 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1125 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001126 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001127 help
1128 This option enables the workaround for the 742231 Cortex-A9
1129 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1130 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1131 accessing some data located in the same cache line, may get corrupted
1132 data due to bad handling of the address hazard when the line gets
1133 replaced from one of the CPUs at the same time as another CPU is
1134 accessing it. This workaround sets specific bits in the diagnostic
1135 register of the Cortex-A9 which reduces the linefill issuing
1136 capabilities of the processor.
1137
Jon Medhurst69155792013-06-07 10:35:35 +01001138config ARM_ERRATA_643719
1139 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1140 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001141 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001142 help
1143 This option enables the workaround for the 643719 Cortex-A9 (prior to
1144 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1145 register returns zero when it should return one. The workaround
1146 corrects this value, ensuring cache maintenance operations which use
1147 it behave as intended and avoiding data corruption.
1148
Will Deaconcdf357f2010-08-05 11:20:51 +01001149config ARM_ERRATA_720789
1150 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001151 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001152 help
1153 This option enables the workaround for the 720789 Cortex-A9 (prior to
1154 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1155 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1156 As a consequence of this erratum, some TLB entries which should be
1157 invalidated are not, resulting in an incoherency in the system page
1158 tables. The workaround changes the TLB flushing routines to invalidate
1159 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001160
1161config ARM_ERRATA_743622
1162 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1163 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001164 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001165 help
1166 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001167 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001168 optimisation in the Cortex-A9 Store Buffer may lead to data
1169 corruption. This workaround sets a specific bit in the diagnostic
1170 register of the Cortex-A9 which disables the Store Buffer
1171 optimisation, preventing the defect from occurring. This has no
1172 visible impact on the overall performance or power consumption of the
1173 processor.
1174
Will Deacon9a27c272011-02-18 16:36:35 +01001175config ARM_ERRATA_751472
1176 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001177 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001178 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001179 help
1180 This option enables the workaround for the 751472 Cortex-A9 (prior
1181 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1182 completion of a following broadcasted operation if the second
1183 operation is received by a CPU before the ICIALLUIS has completed,
1184 potentially leading to corrupted entries in the cache or TLB.
1185
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001186config ARM_ERRATA_754322
1187 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1188 depends on CPU_V7
1189 help
1190 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1191 r3p*) erratum. A speculative memory access may cause a page table walk
1192 which starts prior to an ASID switch but completes afterwards. This
1193 can populate the micro-TLB with a stale entry which may be hit with
1194 the new ASID. This workaround places two dsb instructions in the mm
1195 switching code so that no page table walks can cross the ASID switch.
1196
Will Deacon5dab26af2011-03-04 12:38:54 +01001197config ARM_ERRATA_754327
1198 bool "ARM errata: no automatic Store Buffer drain"
1199 depends on CPU_V7 && SMP
1200 help
1201 This option enables the workaround for the 754327 Cortex-A9 (prior to
1202 r2p0) erratum. The Store Buffer does not have any automatic draining
1203 mechanism and therefore a livelock may occur if an external agent
1204 continuously polls a memory location waiting to observe an update.
1205 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1206 written polling loops from denying visibility of updates to memory.
1207
Catalin Marinas145e10e2011-08-15 11:04:41 +01001208config ARM_ERRATA_364296
1209 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001210 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001211 help
1212 This options enables the workaround for the 364296 ARM1136
1213 r0p2 erratum (possible cache data corruption with
1214 hit-under-miss enabled). It sets the undocumented bit 31 in
1215 the auxiliary control register and the FI bit in the control
1216 register, thus disabling hit-under-miss without putting the
1217 processor into full low interrupt latency mode. ARM11MPCore
1218 is not affected.
1219
Will Deaconf630c1b2011-09-15 11:45:15 +01001220config ARM_ERRATA_764369
1221 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1222 depends on CPU_V7 && SMP
1223 help
1224 This option enables the workaround for erratum 764369
1225 affecting Cortex-A9 MPCore with two or more processors (all
1226 current revisions). Under certain timing circumstances, a data
1227 cache line maintenance operation by MVA targeting an Inner
1228 Shareable memory region may fail to proceed up to either the
1229 Point of Coherency or to the Point of Unification of the
1230 system. This workaround adds a DSB instruction before the
1231 relevant cache maintenance functions and sets a specific bit
1232 in the diagnostic control register of the SCU.
1233
Simon Horman7253b852012-09-28 02:12:45 +01001234config ARM_ERRATA_775420
1235 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1236 depends on CPU_V7
1237 help
1238 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1239 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1240 operation aborts with MMU exception, it might cause the processor
1241 to deadlock. This workaround puts DSB before executing ISB if
1242 an abort may occur on cache maintenance.
1243
Catalin Marinas93dc6882013-03-26 23:35:04 +01001244config ARM_ERRATA_798181
1245 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1246 depends on CPU_V7 && SMP
1247 help
1248 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1249 adequately shooting down all use of the old entries. This
1250 option enables the Linux kernel workaround for this erratum
1251 which sends an IPI to the CPUs that are running the same ASID
1252 as the one being invalidated.
1253
Will Deacon84b65042013-08-20 17:29:55 +01001254config ARM_ERRATA_773022
1255 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1256 depends on CPU_V7
1257 help
1258 This option enables the workaround for the 773022 Cortex-A15
1259 (up to r0p4) erratum. In certain rare sequences of code, the
1260 loop buffer may deliver incorrect instructions. This
1261 workaround disables the loop buffer to avoid the erratum.
1262
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263endmenu
1264
1265source "arch/arm/common/Kconfig"
1266
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267menu "Bus support"
1268
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269config ISA
1270 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 help
1272 Find out whether you have ISA slots on your motherboard. ISA is the
1273 name of a bus system, i.e. the way the CPU talks to the other stuff
1274 inside your box. Other bus systems are PCI, EISA, MicroChannel
1275 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1276 newer boards don't support it. If you have ISA, say Y, otherwise N.
1277
Russell King065909b2006-01-04 15:44:16 +00001278# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279config ISA_DMA
1280 bool
Russell King065909b2006-01-04 15:44:16 +00001281 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282
Russell King065909b2006-01-04 15:44:16 +00001283# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001284config ISA_DMA_API
1285 bool
Al Viro5cae8412005-05-04 05:39:22 +01001286
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001288 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289 help
1290 Find out whether you have a PCI motherboard. PCI is the name of a
1291 bus system, i.e. the way the CPU talks to the other stuff inside
1292 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1293 VESA. If you have PCI, say Y, otherwise N.
1294
Anton Vorontsov52882172010-04-19 13:20:49 +01001295config PCI_DOMAINS
1296 bool
1297 depends on PCI
1298
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001299config PCI_DOMAINS_GENERIC
1300 def_bool PCI_DOMAINS
1301
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001302config PCI_NANOENGINE
1303 bool "BSE nanoEngine PCI support"
1304 depends on SA1100_NANOENGINE
1305 help
1306 Enable PCI on the BSE nanoEngine board.
1307
Matthew Wilcox36e23592007-07-10 10:54:40 -06001308config PCI_SYSCALL
1309 def_bool PCI
1310
Mike Rapoporta0113a92007-11-25 08:55:34 +01001311config PCI_HOST_ITE8152
1312 bool
1313 depends on PCI && MACH_ARMCORE
1314 default y
1315 select DMABOUNCE
1316
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001318source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319
1320source "drivers/pcmcia/Kconfig"
1321
1322endmenu
1323
1324menu "Kernel Features"
1325
Dave Martin3b556582011-12-07 15:38:04 +00001326config HAVE_SMP
1327 bool
1328 help
1329 This option should be selected by machines which have an SMP-
1330 capable CPU.
1331
1332 The only effect of this option is to make the SMP-related
1333 options available to the user for configuration.
1334
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001336 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001337 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001338 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001339 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001340 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001341 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342 help
1343 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001344 a system with only one CPU, say N. If you have a system with more
1345 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346
Robert Graffham4a474152014-01-23 15:55:29 -08001347 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001349 you say Y here, the kernel will run on many, but not all,
1350 uniprocessor machines. On a uniprocessor machine, the kernel
1351 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352
Paul Bolle395cf962011-08-15 02:02:26 +02001353 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001355 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356
1357 If you don't know what to do here, say N.
1358
Russell Kingf00ec482010-09-04 10:47:48 +01001359config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001360 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001361 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001362 default y
1363 help
1364 SMP kernels contain instructions which fail on non-SMP processors.
1365 Enabling this option allows the kernel to modify itself to make
1366 these instructions safe. Disabling it allows about 1K of space
1367 savings.
1368
1369 If you don't know what to do here, say Y.
1370
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001371config ARM_CPU_TOPOLOGY
1372 bool "Support cpu topology definition"
1373 depends on SMP && CPU_V7
1374 default y
1375 help
1376 Support ARM cpu topology definition. The MPIDR register defines
1377 affinity between processors which is then used to describe the cpu
1378 topology of an ARM System.
1379
1380config SCHED_MC
1381 bool "Multi-core scheduler support"
1382 depends on ARM_CPU_TOPOLOGY
1383 help
1384 Multi-core scheduler support improves the CPU scheduler's decision
1385 making when dealing with multi-core CPU chips at a cost of slightly
1386 increased overhead in some places. If unsure say N here.
1387
1388config SCHED_SMT
1389 bool "SMT scheduler support"
1390 depends on ARM_CPU_TOPOLOGY
1391 help
1392 Improves the CPU scheduler's decision making when dealing with
1393 MultiThreading at a cost of slightly increased overhead in some
1394 places. If unsure say N here.
1395
Russell Kinga8cbcd92009-05-16 11:51:14 +01001396config HAVE_ARM_SCU
1397 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001398 help
1399 This option enables support for the ARM system coherency unit
1400
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001401config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001402 bool "Architected timer support"
1403 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001404 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001405 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001406 help
1407 This option enables support for the ARM architected timer
1408
Russell Kingf32f4ce2009-05-16 12:14:21 +01001409config HAVE_ARM_TWD
1410 bool
1411 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001412 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001413 help
1414 This options enables support for the ARM timer and watchdog unit
1415
Nicolas Pitree8db2882012-04-12 02:45:22 -04001416config MCPM
1417 bool "Multi-Cluster Power Management"
1418 depends on CPU_V7 && SMP
1419 help
1420 This option provides the common power management infrastructure
1421 for (multi-)cluster based systems, such as big.LITTLE based
1422 systems.
1423
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001424config MCPM_QUAD_CLUSTER
1425 bool
1426 depends on MCPM
1427 help
1428 To avoid wasting resources unnecessarily, MCPM only supports up
1429 to 2 clusters by default.
1430 Platforms with 3 or 4 clusters that use MCPM must select this
1431 option to allow the additional clusters to be managed.
1432
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001433config BIG_LITTLE
1434 bool "big.LITTLE support (Experimental)"
1435 depends on CPU_V7 && SMP
1436 select MCPM
1437 help
1438 This option enables support selections for the big.LITTLE
1439 system architecture.
1440
1441config BL_SWITCHER
1442 bool "big.LITTLE switcher support"
1443 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001444 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001445 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001446 help
1447 The big.LITTLE "switcher" provides the core functionality to
1448 transparently handle transition between a cluster of A15's
1449 and a cluster of A7's in a big.LITTLE system.
1450
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001451config BL_SWITCHER_DUMMY_IF
1452 tristate "Simple big.LITTLE switcher user interface"
1453 depends on BL_SWITCHER && DEBUG_KERNEL
1454 help
1455 This is a simple and dummy char dev interface to control
1456 the big.LITTLE switcher core code. It is meant for
1457 debugging purposes only.
1458
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001459choice
1460 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001461 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001462 default VMSPLIT_3G
1463 help
1464 Select the desired split between kernel and user memory.
1465
1466 If you are not absolutely sure what you are doing, leave this
1467 option alone!
1468
1469 config VMSPLIT_3G
1470 bool "3G/1G user/kernel split"
1471 config VMSPLIT_2G
1472 bool "2G/2G user/kernel split"
1473 config VMSPLIT_1G
1474 bool "1G/3G user/kernel split"
1475endchoice
1476
1477config PAGE_OFFSET
1478 hex
Russell King006fa252014-02-26 19:40:46 +00001479 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001480 default 0x40000000 if VMSPLIT_1G
1481 default 0x80000000 if VMSPLIT_2G
1482 default 0xC0000000
1483
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484config NR_CPUS
1485 int "Maximum number of CPUs (2-32)"
1486 range 2 32
1487 depends on SMP
1488 default "4"
1489
Russell Kinga054a812005-11-02 22:24:33 +00001490config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001491 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001492 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001493 help
1494 Say Y here to experiment with turning CPUs off and on. CPUs
1495 can be controlled through /sys/devices/system/cpu.
1496
Will Deacon2bdd4242012-12-12 19:20:52 +00001497config ARM_PSCI
1498 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1499 depends on CPU_V7
1500 help
1501 Say Y here if you want Linux to communicate with system firmware
1502 implementing the PSCI specification for CPU-centric power
1503 management operations described in ARM document number ARM DEN
1504 0022A ("Power State Coordination Interface System Software on
1505 ARM processors").
1506
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001507# The GPIO number here must be sorted by descending number. In case of
1508# a multiplatform kernel, we just want the highest value required by the
1509# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001510config ARCH_NR_GPIO
1511 int
Gregory Fongb35d2e52015-05-28 19:14:10 -07001512 default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \
1513 ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001514 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1515 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001516 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001517 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001518 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001519 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001520 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001521 default 0
1522 help
1523 Maximum number of GPIOs in the system.
1524
1525 If unsure, leave the default value.
1526
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001527source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001528
Russell Kingc9218b12013-04-27 23:31:10 +01001529config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001530 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001531 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001532 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001533 default 128 if SOC_AT91RM9200
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001534 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001535 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001536
1537choice
Russell King47d84682013-09-10 23:47:55 +01001538 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001539 prompt "Timer frequency"
1540
1541config HZ_100
1542 bool "100 Hz"
1543
1544config HZ_200
1545 bool "200 Hz"
1546
1547config HZ_250
1548 bool "250 Hz"
1549
1550config HZ_300
1551 bool "300 Hz"
1552
1553config HZ_500
1554 bool "500 Hz"
1555
1556config HZ_1000
1557 bool "1000 Hz"
1558
1559endchoice
1560
1561config HZ
1562 int
Russell King47d84682013-09-10 23:47:55 +01001563 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001564 default 100 if HZ_100
1565 default 200 if HZ_200
1566 default 250 if HZ_250
1567 default 300 if HZ_300
1568 default 500 if HZ_500
1569 default 1000
1570
1571config SCHED_HRTICK
1572 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001573
Catalin Marinas16c79652009-07-24 12:33:02 +01001574config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001575 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001576 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001577 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001578 select AEABI
1579 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001580 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001581 help
1582 By enabling this option, the kernel will be compiled in
1583 Thumb-2 mode. A compiler/assembler that understand the unified
1584 ARM-Thumb syntax is needed.
1585
1586 If unsure, say N.
1587
Dave Martin6f685c52011-03-03 11:41:12 +01001588config THUMB2_AVOID_R_ARM_THM_JUMP11
1589 bool "Work around buggy Thumb-2 short branch relocations in gas"
1590 depends on THUMB2_KERNEL && MODULES
1591 default y
1592 help
1593 Various binutils versions can resolve Thumb-2 branches to
1594 locally-defined, preemptible global symbols as short-range "b.n"
1595 branch instructions.
1596
1597 This is a problem, because there's no guarantee the final
1598 destination of the symbol, or any candidate locations for a
1599 trampoline, are within range of the branch. For this reason, the
1600 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1601 relocation in modules at all, and it makes little sense to add
1602 support.
1603
1604 The symptom is that the kernel fails with an "unsupported
1605 relocation" error when loading some modules.
1606
1607 Until fixed tools are available, passing
1608 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1609 code which hits this problem, at the cost of a bit of extra runtime
1610 stack usage in some cases.
1611
1612 The problem is described in more detail at:
1613 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1614
1615 Only Thumb-2 kernels are affected.
1616
1617 Unless you are sure your tools don't have this problem, say Y.
1618
Catalin Marinas0becb082009-07-24 12:32:53 +01001619config ARM_ASM_UNIFIED
1620 bool
1621
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001622config AEABI
1623 bool "Use the ARM EABI to compile the kernel"
1624 help
1625 This option allows for the kernel to be compiled using the latest
1626 ARM ABI (aka EABI). This is only useful if you are using a user
1627 space environment that is also compiled with EABI.
1628
1629 Since there are major incompatibilities between the legacy ABI and
1630 EABI, especially with regard to structure member alignment, this
1631 option also changes the kernel syscall calling convention to
1632 disambiguate both ABIs and allow for backward compatibility support
1633 (selected with CONFIG_OABI_COMPAT).
1634
1635 To use this you need GCC version 4.0.0 or later.
1636
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001637config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001638 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001639 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001640 help
1641 This option preserves the old syscall interface along with the
1642 new (ARM EABI) one. It also provides a compatibility layer to
1643 intercept syscalls that have structure arguments which layout
1644 in memory differs between the legacy ABI and the new ARM EABI
1645 (only for non "thumb" binaries). This option adds a tiny
1646 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001647
1648 The seccomp filter system will not be available when this is
1649 selected, since there is no way yet to sensibly distinguish
1650 between calling conventions during filtering.
1651
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001652 If you know you'll be using only pure EABI user space then you
1653 can say N here. If this option is not selected and you attempt
1654 to execute a legacy ABI binary then the result will be
1655 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001656 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001657
Mel Gormaneb335752009-05-13 17:34:48 +01001658config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001659 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001660
Russell King05944d72006-11-30 20:43:51 +00001661config ARCH_SPARSEMEM_ENABLE
1662 bool
1663
Russell King07a2f732008-10-01 21:39:58 +01001664config ARCH_SPARSEMEM_DEFAULT
1665 def_bool ARCH_SPARSEMEM_ENABLE
1666
Russell King05944d72006-11-30 20:43:51 +00001667config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001668 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001669
Will Deacon7b7bf492011-05-19 13:21:14 +01001670config HAVE_ARCH_PFN_VALID
1671 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1672
Steve Capperb8cd51a2014-10-09 15:29:20 -07001673config HAVE_GENERIC_RCU_GUP
1674 def_bool y
1675 depends on ARM_LPAE
1676
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001677config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001678 bool "High Memory Support"
1679 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001680 help
1681 The address space of ARM processors is only 4 Gigabytes large
1682 and it has to accommodate user address space, kernel address
1683 space as well as some memory mapped IO. That means that, if you
1684 have a large amount of physical memory and/or IO, not all of the
1685 memory can be "permanently mapped" by the kernel. The physical
1686 memory that is not permanently mapped is called "high memory".
1687
1688 Depending on the selected kernel/user memory split, minimum
1689 vmalloc space and actual amount of RAM, you may not need this
1690 option which should result in a slightly faster kernel.
1691
1692 If unsure, say n.
1693
Russell King65cec8e2009-08-17 20:02:06 +01001694config HIGHPTE
1695 bool "Allocate 2nd-level pagetables from highmem"
1696 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001697
Jamie Iles1b8873a2010-02-02 20:25:44 +01001698config HW_PERF_EVENTS
1699 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001700 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001701 default y
1702 help
1703 Enable hardware performance counter support for perf events. If
1704 disabled, perf events will use software events only.
1705
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001706config SYS_SUPPORTS_HUGETLBFS
1707 def_bool y
1708 depends on ARM_LPAE
1709
Catalin Marinas8d962502012-07-25 14:39:26 +01001710config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1711 def_bool y
1712 depends on ARM_LPAE
1713
Steven Capper4bfab202013-07-26 14:58:22 +01001714config ARCH_WANT_GENERAL_HUGETLB
1715 def_bool y
1716
Ard Biesheuvel7d485f62014-11-24 16:54:35 +01001717config ARM_MODULE_PLTS
1718 bool "Use PLTs to allow module memory to spill over into vmalloc area"
1719 depends on MODULES
1720 help
1721 Allocate PLTs when loading modules so that jumps and calls whose
1722 targets are too far away for their relative offsets to be encoded
1723 in the instructions themselves can be bounced via veneers in the
1724 module's PLT. This allows modules to be allocated in the generic
1725 vmalloc area after the dedicated module memory area has been
1726 exhausted. The modules will use slightly more memory, but after
1727 rounding up to page size, the actual memory footprint is usually
1728 the same.
1729
1730 Say y if you are getting out of memory errors while loading modules
1731
Dave Hansen3f22ab22005-06-23 00:07:43 -07001732source "mm/Kconfig"
1733
Magnus Dammc1b2d972010-07-05 10:00:11 +01001734config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001735 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1736 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001737 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001738 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001739 default "11"
1740 help
1741 The kernel memory allocator divides physically contiguous memory
1742 blocks into "zones", where each zone is a power of two number of
1743 pages. This option selects the largest power of two that the kernel
1744 keeps in the memory allocator. If you need to allocate very large
1745 blocks of physically contiguous memory, then you may need to
1746 increase this value.
1747
1748 This config option is actually maximum order plus one. For example,
1749 a value of 11 means that the largest free memory block is 2^10 pages.
1750
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751config ALIGNMENT_TRAP
1752 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001753 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001755 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001757 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1759 address divisible by 4. On 32-bit ARM processors, these non-aligned
1760 fetch/store instructions will be emulated in software if you say
1761 here, which has a severe performance impact. This is necessary for
1762 correct operation of some network protocols. With an IP-only
1763 configuration it is safe to say N, otherwise say Y.
1764
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001765config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001766 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1767 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001768 default y if CPU_FEROCEON
1769 help
1770 Implement faster copy_to_user and clear_user methods for CPU
1771 cores where a 8-word STM instruction give significantly higher
1772 memory write throughput than a sequence of individual 32bit stores.
1773
1774 A possible side effect is a slight increase in scheduling latency
1775 between threads sharing the same address space if they invoke
1776 such copy operations with large buffers.
1777
1778 However, if the CPU data cache is using a write-allocate mode,
1779 this option is unlikely to provide any performance gain.
1780
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001781config SECCOMP
1782 bool
1783 prompt "Enable seccomp to safely compute untrusted bytecode"
1784 ---help---
1785 This kernel feature is useful for number crunching applications
1786 that may need to compute untrusted bytecode during their
1787 execution. By using pipes or other transports made available to
1788 the process as file descriptors supporting the read/write
1789 syscalls, it's possible to isolate those applications in
1790 their own address space using seccomp. Once seccomp is
1791 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1792 and the task is only allowed to execute a few safe syscalls
1793 defined by each seccomp mode.
1794
Stefano Stabellini06e62952013-10-15 15:47:14 +00001795config SWIOTLB
1796 def_bool y
1797
1798config IOMMU_HELPER
1799 def_bool SWIOTLB
1800
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001801config XEN_DOM0
1802 def_bool y
1803 depends on XEN
1804
1805config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001806 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001807 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001808 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001809 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001810 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001811 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001812 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001813 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001814 help
1815 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1816
Linus Torvalds1da177e2005-04-16 15:20:36 -07001817endmenu
1818
1819menu "Boot options"
1820
Grant Likely9eb8f672011-04-28 14:27:20 -06001821config USE_OF
1822 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001823 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001824 select OF
1825 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001826 select OF_RESERVED_MEM
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
Richard Purdiec587e4a2007-02-06 21:29:00 +01002003 help
2004 kexec is a system call that implements the ability to shutdown your
2005 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002006 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002007 you can start any kernel with it, not just Linux.
2008
2009 It is an ongoing process to be certain the hardware in a machine
2010 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002011 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002012
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002013config ATAGS_PROC
2014 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002015 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002016 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002017 help
2018 Should the atags used to boot the kernel be exported in an "atags"
2019 file in procfs. Useful with kexec.
2020
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002021config CRASH_DUMP
2022 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002023 help
2024 Generate crash dump after being started by kexec. This should
2025 be normally only set in special crash dump kernels which are
2026 loaded in the main kernel with kexec-tools into a specially
2027 reserved region and then later executed after a crash by
2028 kdump/kexec. The crash dump kernel must be compiled to a
2029 memory address not used by the main kernel
2030
2031 For more details see Documentation/kdump/kdump.txt
2032
Eric Miaoe69edc792010-07-05 15:56:50 +02002033config AUTO_ZRELADDR
2034 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002035 help
2036 ZRELADDR is the physical address where the decompressed kernel
2037 image will be placed. If AUTO_ZRELADDR is selected, the address
2038 will be determined at run-time by masking the current IP with
2039 0xf8000000. This assumes the zImage being placed in the first 128MB
2040 from start of memory.
2041
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042endmenu
2043
Russell Kingac9d7ef2008-08-18 17:26:00 +01002044menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002045
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047
Russell Kingac9d7ef2008-08-18 17:26:00 +01002048source "drivers/cpuidle/Kconfig"
2049
2050endmenu
2051
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052menu "Floating point emulation"
2053
2054comment "At least one emulation must be selected"
2055
2056config FPE_NWFPE
2057 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002058 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059 ---help---
2060 Say Y to include the NWFPE floating point emulator in the kernel.
2061 This is necessary to run most binaries. Linux does not currently
2062 support floating point hardware so you need to say Y here even if
2063 your machine has an FPA or floating point co-processor podule.
2064
2065 You may say N here if you are going to load the Acorn FPEmulator
2066 early in the bootup.
2067
2068config FPE_NWFPE_XP
2069 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002070 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071 help
2072 Say Y to include 80-bit support in the kernel floating-point
2073 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2074 Note that gcc does not generate 80-bit operations by default,
2075 so in most cases this option only enlarges the size of the
2076 floating point emulator without any good reason.
2077
2078 You almost surely want to say N here.
2079
2080config FPE_FASTFPE
2081 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002082 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083 ---help---
2084 Say Y here to include the FAST floating point emulator in the kernel.
2085 This is an experimental much faster emulator which now also has full
2086 precision for the mantissa. It does not support any exceptions.
2087 It is very simple, and approximately 3-6 times faster than NWFPE.
2088
2089 It should be sufficient for most programs. It may be not suitable
2090 for scientific calculations, but you have to check this for yourself.
2091 If you do not feel you need a faster FP emulation you should better
2092 choose NWFPE.
2093
2094config VFP
2095 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002096 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 help
2098 Say Y to include VFP support code in the kernel. This is needed
2099 if your hardware includes a VFP unit.
2100
2101 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2102 release notes and additional status information.
2103
2104 Say N if your target does not have VFP hardware.
2105
Catalin Marinas25ebee02007-09-25 15:22:24 +01002106config VFPv3
2107 bool
2108 depends on VFP
2109 default y if CPU_V7
2110
Catalin Marinasb5872db2008-01-10 19:16:17 +01002111config NEON
2112 bool "Advanced SIMD (NEON) Extension support"
2113 depends on VFPv3 && CPU_V7
2114 help
2115 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2116 Extension.
2117
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002118config KERNEL_MODE_NEON
2119 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002120 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002121 help
2122 Say Y to include support for NEON in kernel mode.
2123
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124endmenu
2125
2126menu "Userspace binary formats"
2127
2128source "fs/Kconfig.binfmt"
2129
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130endmenu
2131
2132menu "Power management options"
2133
Russell Kingeceab4a2005-11-15 11:31:41 +00002134source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135
Johannes Bergf4cb5702007-12-08 02:14:00 +01002136config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002137 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002138 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002139 def_bool y
2140
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002141config ARM_CPU_SUSPEND
2142 def_bool PM_SLEEP
2143
Sebastian Capella603fb422014-03-25 01:20:29 +01002144config ARCH_HIBERNATION_POSSIBLE
2145 bool
2146 depends on MMU
2147 default y if ARCH_SUSPEND_POSSIBLE
2148
Linus Torvalds1da177e2005-04-16 15:20:36 -07002149endmenu
2150
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002151source "net/Kconfig"
2152
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002153source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002154
Kumar Gala916f7432015-02-26 15:49:09 -06002155source "drivers/firmware/Kconfig"
2156
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157source "fs/Kconfig"
2158
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159source "arch/arm/Kconfig.debug"
2160
2161source "security/Kconfig"
2162
2163source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002164if CRYPTO
2165source "arch/arm/crypto/Kconfig"
2166endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002167
2168source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002169
2170source "arch/arm/kvm/Kconfig"