blob: b7a7d1556d964234599766cd10c92cf10747caf4 [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
Laura Abbott36d0fd22014-10-09 15:26:42 -070018 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010019 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010020 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010021 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_IRQ_PROBE
23 select GENERIC_IRQ_SHOW
Geert Uytterhoeven7c070052015-04-01 13:37:11 +010024 select GENERIC_IRQ_SHOW_LEVEL
Russell Kingb1b3f492012-10-06 17:12:25 +010025 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070026 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010027 select GENERIC_SMP_IDLE_THREAD
28 select GENERIC_STRNCPY_FROM_USER
29 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010030 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010031 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090032 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010033 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Rabin Vincent09f05d82012-02-18 17:52:41 +010034 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060035 select HAVE_ARCH_KGDB
Kees Cook91702172013-11-09 00:51:56 +010036 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010037 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010038 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010039 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010040 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010041 select HAVE_C_RECORDMCOUNT
42 select HAVE_DEBUG_KMEMLEAK
43 select HAVE_DMA_API_DEBUG
44 select HAVE_DMA_ATTRS
45 select HAVE_DMA_CONTIGUOUS if MMU
46 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Will Deacondce5c9e2013-12-17 19:50:16 +010047 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010048 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
49 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
50 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
51 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010052 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
53 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010054 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010055 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070056 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010057 select HAVE_KERNEL_LZMA
58 select HAVE_KERNEL_LZO
59 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010060 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080061 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010062 select HAVE_MEMBLOCK
Russell King171b3f02013-09-12 21:24:42 +010063 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
Russell Kingb1b3f492012-10-06 17:12:25 +010064 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080065 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010066 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010067 select HAVE_PERF_REGS
68 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070069 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010070 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010071 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070072 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070073 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010074 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010075 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040076 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010077 select OLD_SIGACTION
78 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010079 select PERF_USE_VMALLOC
80 select RTC_LIB
81 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010082 # Above selects are sorted alphabetically; please add new ones
83 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 help
85 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000086 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000088 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 Europe. There is an ARM Linux project with a web page at
90 <http://www.arm.linux.org.uk/>.
91
Russell King74facff2011-06-02 11:16:22 +010092config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070093 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010094 bool
95
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020096config NEED_SG_DMA_LENGTH
97 bool
98
99config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200100 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100101 select ARM_HAS_SG_CHAIN
102 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200103
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900104if ARM_DMA_USE_IOMMU
105
106config ARM_DMA_IOMMU_ALIGNMENT
107 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
108 range 4 9
109 default 8
110 help
111 DMA mapping framework by default aligns all buffers to the smallest
112 PAGE_SIZE order which is greater than or equal to the requested buffer
113 size. This works well for buffers up to a few hundreds kilobytes, but
114 for larger buffers it just a waste of address space. Drivers which has
115 relatively small addressing window (like 64Mib) might run out of
116 virtual space with just a few allocations.
117
118 With this parameter you can specify the maximum PAGE_SIZE order for
119 DMA IOMMU buffers. Larger buffers will be aligned only to this
120 specified order. The order is expressed as a power of two multiplied
121 by the PAGE_SIZE.
122
123endif
124
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100125config MIGHT_HAVE_PCI
126 bool
127
Ralf Baechle75e71532007-02-09 17:08:58 +0000128config SYS_SUPPORTS_APM_EMULATION
129 bool
130
Linus Walleijbc581772009-09-15 17:30:37 +0100131config HAVE_TCM
132 bool
133 select GENERIC_ALLOCATOR
134
Russell Kinge119bff2010-01-10 17:23:29 +0000135config HAVE_PROC_CPU
136 bool
137
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700138config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000139 bool
Al Viro5ea81762007-02-11 15:41:31 +0000140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141config EISA
142 bool
143 ---help---
144 The Extended Industry Standard Architecture (EISA) bus was
145 developed as an open alternative to the IBM MicroChannel bus.
146
147 The EISA bus provided some of the features of the IBM MicroChannel
148 bus while maintaining backward compatibility with cards made for
149 the older ISA bus. The EISA bus saw limited use between 1988 and
150 1995 when it was made obsolete by the PCI bus.
151
152 Say Y here if you are building a kernel for an EISA-based machine.
153
154 Otherwise, say N.
155
156config SBUS
157 bool
158
Russell Kingf16fb1e2007-04-28 09:59:37 +0100159config STACKTRACE_SUPPORT
160 bool
161 default y
162
Nicolas Pitref76e9152008-04-24 01:31:46 -0400163config HAVE_LATENCYTOP_SUPPORT
164 bool
165 depends on !SMP
166 default y
167
Russell Kingf16fb1e2007-04-28 09:59:37 +0100168config LOCKDEP_SUPPORT
169 bool
170 default y
171
Russell King7ad1bcb2006-08-27 12:07:02 +0100172config TRACE_IRQFLAGS_SUPPORT
173 bool
174 default y
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176config RWSEM_XCHGADD_ALGORITHM
177 bool
Will Deacon8a874112014-05-02 17:06:19 +0100178 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
David Howellsf0d1b0b2006-12-08 02:37:49 -0800180config ARCH_HAS_ILOG2_U32
181 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800182
183config ARCH_HAS_ILOG2_U64
184 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800185
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100186config ARCH_HAS_BANDGAP
187 bool
188
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800189config GENERIC_HWEIGHT
190 bool
191 default y
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193config GENERIC_CALIBRATE_DELAY
194 bool
195 default y
196
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100197config ARCH_MAY_HAVE_PC_FDC
198 bool
199
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800200config ZONE_DMA
201 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800202
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800203config NEED_DMA_MAP_STATE
204 def_bool y
205
David A. Longc7edc9e2014-03-07 11:23:04 -0500206config ARCH_SUPPORTS_UPROBES
207 def_bool y
208
Rob Herring58af4a22012-03-20 14:33:01 -0500209config ARCH_HAS_DMA_SET_COHERENT_MASK
210 bool
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212config GENERIC_ISA_DMA
213 bool
214
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215config FIQ
216 bool
217
Rob Herring13a50452012-02-07 09:28:22 -0600218config NEED_RET_TO_USER
219 bool
220
Al Viro034d2f52005-12-19 16:27:59 -0500221config ARCH_MTD_XIP
222 bool
223
Hyok S. Choic760fc12006-03-27 15:18:50 +0100224config VECTORS_BASE
225 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900226 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100227 default DRAM_BASE if REMAP_VECTORS_TO_RAM
228 default 0x00000000
229 help
Russell King19accfd2013-07-04 11:40:32 +0100230 The base address of exception vectors. This must be two pages
231 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100232
Russell Kingdc21af92011-01-04 19:09:43 +0000233config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100234 bool "Patch physical to virtual translations at runtime" if EMBEDDED
235 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100236 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000237 depends on !ARCH_REALVIEW || !SPARSEMEM
238 help
Russell King111e9a52011-05-12 10:02:42 +0100239 Patch phys-to-virt and virt-to-phys translation functions at
240 boot and module load time according to the position of the
241 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000242
Russell King111e9a52011-05-12 10:02:42 +0100243 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100244 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000245
Russell Kingc1beced2011-08-10 10:23:45 +0100246 Only disable this option if you know that you do not require
247 this feature (eg, building a kernel for a single machine) and
248 you need to shrink the kernel to the minimal size.
249
Rob Herringc334bc12012-03-04 22:03:33 -0600250config NEED_MACH_IO_H
251 bool
252 help
253 Select this when mach/io.h is required to provide special
254 definitions for this platform. The need for mach/io.h should
255 be avoided when possible.
256
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400257config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400258 bool
Russell King111e9a52011-05-12 10:02:42 +0100259 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400260 Select this when mach/memory.h is required to provide special
261 definitions for this platform. The need for mach/memory.h should
262 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400263
264config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100265 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100266 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100267 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100268 default 0x00000000 if ARCH_EBSA110 || \
269 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
270 ARCH_FOOTBRIDGE || \
271 ARCH_INTEGRATOR || \
272 ARCH_IOP13XX || \
273 ARCH_KS8695 || \
274 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
275 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
276 default 0x20000000 if ARCH_S5PV210
277 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
278 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
279 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
280 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
281 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400282 help
283 Please provide the physical address corresponding to the
284 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000285
Simon Glass87e040b2011-08-16 23:44:26 +0100286config GENERIC_BUG
287 def_bool y
288 depends on BUG
289
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700290config PGTABLE_LEVELS
291 int
292 default 3 if ARM_LPAE
293 default 2
294
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295source "init/Kconfig"
296
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700297source "kernel/Kconfig.freezer"
298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299menu "System Type"
300
Hyok S. Choi3c427972009-07-24 12:35:00 +0100301config MMU
302 bool "MMU-based Paged Memory Management Support"
303 default y
304 help
305 Select if you want MMU-based virtualised addressing space
306 support by paged memory management. If unsure, say 'Y'.
307
Russell Kingccf50e22010-03-15 19:03:06 +0000308#
309# The "ARM system type" choice list is ordered alphabetically by option
310# text. Please add new entries in the option alphabetic order.
311#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312choice
313 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100314 default ARCH_VERSATILE if !MMU
315 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
Rob Herring387798b2012-09-06 13:41:12 -0500317config ARCH_MULTIPLATFORM
318 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100319 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600320 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700321 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500322 select ARM_PATCH_PHYS_VIRT
323 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500324 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600325 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600326 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100327 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500328 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600329 select SPARSE_IRQ
330 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600331
Stefan Agner9c77bc42015-05-20 00:03:51 +0200332config ARM_SINGLE_ARMV7M
333 bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
334 depends on !MMU
335 select ARCH_WANT_OPTIONAL_GPIOLIB
336 select ARM_NVIC
Stefan Agner499f1642015-05-21 00:35:44 +0200337 select AUTO_ZRELADDR
Stefan Agner9c77bc42015-05-20 00:03:51 +0200338 select CLKSRC_OF
339 select COMMON_CLK
340 select CPU_V7M
341 select GENERIC_CLOCKEVENTS
342 select NO_IOPORT_MAP
343 select SPARSE_IRQ
344 select USE_OF
345
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100346config ARCH_REALVIEW
347 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100348 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100349 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100350 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200351 select COMMON_CLK
352 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100353 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100354 select GPIO_PL061 if GPIOLIB
355 select ICST
356 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000357 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000358 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100359 help
360 This enables support for ARM Ltd RealView boards.
361
362config ARCH_VERSATILE
363 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100364 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100365 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100366 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100367 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100368 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100369 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900370 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000371 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000372 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100373 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000374 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100375 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100376 help
377 This enables support for ARM Ltd Versatile board.
378
Russell King93e22562012-10-12 14:20:52 +0100379config ARCH_CLPS711X
380 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400381 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400382 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400383 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100384 select COMMON_CLK
385 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400386 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400387 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400388 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100389 help
390 Support for Cirrus Logic 711x/721x/731x based boards.
391
Russell King788c9702009-04-26 14:21:59 +0100392config ARCH_GEMINI
393 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100394 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200395 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100396 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200397 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100398 help
399 Support for the Cortina Systems Gemini family SoCs
400
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401config ARCH_EBSA110
402 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100403 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000404 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100405 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600406 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400407 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700408 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 help
410 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000411 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 Ethernet interface, two PCMCIA sockets, two serial ports and a
413 parallel port.
414
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000415config ARCH_EP93XX
416 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100417 select ARCH_HAS_HOLES_MEMORYMODEL
418 select ARCH_REQUIRE_GPIOLIB
419 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000420 select ARM_AMBA
421 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100422 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100423 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000424 help
425 This enables support for the Cirrus EP93xx series of CPUs.
426
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427config ARCH_FOOTBRIDGE
428 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000429 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000431 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200432 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600433 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400434 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000435 help
436 Support for systems based on the DC21285 companion chip
437 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100439config ARCH_NETX
440 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100441 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100442 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000443 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100444 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000445 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100446 This enables support for systems based on the Hilscher NetX Soc
447
Russell King3b938be2007-05-12 11:25:44 +0100448config ARCH_IOP13XX
449 bool "IOP13xx-based"
450 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100451 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400452 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600453 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100454 select PCI
455 select PLAT_IOP
456 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000457 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100458 help
459 Support for Intel's IOP13XX (XScale) family of processors.
460
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100461config ARCH_IOP32X
462 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100463 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100464 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000465 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200466 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600467 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100468 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100469 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000470 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100471 Support for Intel's 80219 and IOP32X (XScale) family of
472 processors.
473
474config ARCH_IOP33X
475 bool "IOP33x-based"
476 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100477 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000478 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200479 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600480 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100481 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100482 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100483 help
484 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485
Russell King3b938be2007-05-12 11:25:44 +0100486config ARCH_IXP4XX
487 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100488 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500489 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100490 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100491 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100492 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000493 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100494 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100495 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100496 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600497 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200498 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100499 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100500 help
Russell King3b938be2007-05-12 11:25:44 +0100501 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100502
Saeed Bisharaedabd382009-08-06 15:12:43 +0300503config ARCH_DOVE
504 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300505 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100506 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300507 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100508 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100509 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100510 select PINCTRL
511 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200512 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300513 help
514 Support for the Marvell Dove SoC 88AP510
515
Russell King788c9702009-04-26 14:21:59 +0100516config ARCH_MV78XX0
517 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700518 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100519 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100520 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100521 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100522 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200523 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100524 help
525 Support for the following Marvell MV78xx0 series SoCs:
526 MV781x0, MV782x0.
527
528config ARCH_ORION5X
529 bool "Marvell Orion"
530 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700531 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100532 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100533 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100534 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100535 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200536 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100537 help
538 Support for the following Marvell Orion 5x series SoCs:
539 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
540 Orion-2 (5281), Orion-1-90 (6183).
541
542config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500543 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100544 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100545 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100546 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100547 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100548 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800549 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800550 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800551 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800552 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100553 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400554 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100555 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500556 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100557
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100558config ARCH_KS8695
559 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100560 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200561 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100562 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200563 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100564 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100565 help
566 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
567 System-on-Chip devices.
568
Russell King788c9702009-04-26 14:21:59 +0100569config ARCH_W90X900
570 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100571 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100572 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100573 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100574 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100575 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200576 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100577 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
578 At present, the w90x900 has been renamed nuc900, regarding
579 the ARM series product line, you can login the following
580 link address to know more.
581
582 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
583 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400584
Russell King93e22562012-10-12 14:20:52 +0100585config ARCH_LPC32XX
586 bool "NXP LPC32XX"
587 select ARCH_REQUIRE_GPIOLIB
588 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000589 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100590 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100591 select CPU_ARM926T
592 select GENERIC_CLOCKEVENTS
593 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100594 select USE_OF
595 help
596 Support for the NXP LPC32XX family of processors
597
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700599 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100600 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100601 select ARCH_MTD_XIP
602 select ARCH_REQUIRE_GPIOLIB
603 select ARM_CPU_SUSPEND if PM
604 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100605 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100606 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100607 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200608 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100609 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800610 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100611 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100612 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100613 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800614 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800615 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000616 help
eric miao2c8086a2007-09-11 19:13:17 -0700617 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100619config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100620 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100621 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100622 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900623 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900624 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100625 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800626 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800627 select HAVE_ARM_TWD if SMP
Dave Martin3b556582011-12-07 15:38:04 +0000628 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000629 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000630 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700631 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200632 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100633 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900634 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100635 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000636 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100637 Support for Renesas ARM SoC platforms using a non-multiplatform
638 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
639 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000640
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641config ARCH_RPC
642 bool "RiscPC"
643 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100644 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100645 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000646 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100647 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100648 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200649 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100650 select HAVE_PATA_PLATFORM
651 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600652 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400653 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700654 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100655 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 help
657 On the Acorn Risc-PC, Linux can support the internal IDE disk and
658 CD-ROM interface, serial and parallel port, and the floppy drive.
659
660config ARCH_SA1100
661 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100662 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700663 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100664 select ARCH_SPARSEMEM_ENABLE
665 select CLKDEV_LOOKUP
666 select CLKSRC_MMIO
667 select CPU_FREQ
668 select CPU_SA1100
669 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200670 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100671 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100672 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100673 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400674 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100675 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000676 help
677 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900679config ARCH_S3C24XX
680 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900681 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100682 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100683 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200684 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800685 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900686 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900687 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900688 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100689 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900690 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600691 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900692 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900694 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
695 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
696 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
697 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900698
Ben Dooksa08ab632008-10-21 14:06:39 +0100699config ARCH_S3C64XX
700 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900701 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200702 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100703 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100704 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100705 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200706 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900707 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900708 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800709 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900710 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900711 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900712 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100713 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700714 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100715 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100716 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100717 select S3C_DEV_NAND
718 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900719 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900720 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900721 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100722 help
723 Samsung S3C64XX series based systems
724
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100725config ARCH_DAVINCI
726 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100727 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700728 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100729 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700730 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100731 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100732 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100733 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500734 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530735 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100736 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100737 help
738 Support for TI's DaVinci platform.
739
Tony Lindgrena0694862013-01-11 11:24:20 -0800740config ARCH_OMAP1
741 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600742 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100743 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800744 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100745 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200746 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100747 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100748 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800749 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800750 select HAVE_IDE
751 select IRQ_DOMAIN
Tony Lindgrenb6943312015-05-20 09:01:21 -0700752 select MULTI_IRQ_HANDLER
Tony Lindgrena0694862013-01-11 11:24:20 -0800753 select NEED_MACH_IO_H if PCCARD
754 select NEED_MACH_MEMORY_H
Tony Lindgren685e2d02015-05-20 09:01:21 -0700755 select SPARSE_IRQ
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100756 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800757 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800758
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759endchoice
760
Rob Herring387798b2012-09-06 13:41:12 -0500761menu "Multiple platform selection"
762 depends on ARCH_MULTIPLATFORM
763
764comment "CPU Core family selection"
765
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100766config ARCH_MULTI_V4
767 bool "ARMv4 based platforms (FA526)"
768 depends on !ARCH_MULTI_V6_V7
769 select ARCH_MULTI_V4_V5
770 select CPU_FA526
771
Rob Herring387798b2012-09-06 13:41:12 -0500772config ARCH_MULTI_V4T
773 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500774 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100775 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200776 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
777 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
778 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500779
780config ARCH_MULTI_V5
781 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500782 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100783 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100784 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200785 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
786 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500787
788config ARCH_MULTI_V4_V5
789 bool
790
791config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800792 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500793 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600794 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500795
796config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800797 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500798 default y
799 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100800 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600801 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500802
803config ARCH_MULTI_V6_V7
804 bool
Rob Herring9352b052014-01-31 15:36:10 -0600805 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500806
807config ARCH_MULTI_CPU_AUTO
808 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
809 select ARCH_MULTI_V5
810
811endmenu
812
Rob Herring05e2a3d2013-12-05 10:04:54 -0600813config ARCH_VIRT
814 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600815 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600816 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600817 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600818 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600819
Russell Kingccf50e22010-03-15 19:03:06 +0000820#
821# This is sorted alphabetically by mach-* pathname. However, plat-*
822# Kconfigs may be included either alphabetically (according to the
823# plat- suffix) or along side the corresponding mach-* source.
824#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200825source "arch/arm/mach-mvebu/Kconfig"
826
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200827source "arch/arm/mach-alpine/Kconfig"
828
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100829source "arch/arm/mach-asm9260/Kconfig"
830
Russell King95b8f202010-01-14 11:43:54 +0000831source "arch/arm/mach-at91/Kconfig"
832
Anders Berg1d22924e2014-05-23 11:08:35 +0200833source "arch/arm/mach-axxia/Kconfig"
834
Christian Daudt8ac49e02012-11-19 09:46:10 -0800835source "arch/arm/mach-bcm/Kconfig"
836
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200837source "arch/arm/mach-berlin/Kconfig"
838
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839source "arch/arm/mach-clps711x/Kconfig"
840
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300841source "arch/arm/mach-cns3xxx/Kconfig"
842
Russell King95b8f202010-01-14 11:43:54 +0000843source "arch/arm/mach-davinci/Kconfig"
844
Baruch Siachdf8d7422015-01-14 10:40:30 +0200845source "arch/arm/mach-digicolor/Kconfig"
846
Russell King95b8f202010-01-14 11:43:54 +0000847source "arch/arm/mach-dove/Kconfig"
848
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000849source "arch/arm/mach-ep93xx/Kconfig"
850
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851source "arch/arm/mach-footbridge/Kconfig"
852
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200853source "arch/arm/mach-gemini/Kconfig"
854
Rob Herring387798b2012-09-06 13:41:12 -0500855source "arch/arm/mach-highbank/Kconfig"
856
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800857source "arch/arm/mach-hisi/Kconfig"
858
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859source "arch/arm/mach-integrator/Kconfig"
860
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100861source "arch/arm/mach-iop32x/Kconfig"
862
863source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864
Dan Williams285f5fa2006-12-07 02:59:39 +0100865source "arch/arm/mach-iop13xx/Kconfig"
866
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867source "arch/arm/mach-ixp4xx/Kconfig"
868
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400869source "arch/arm/mach-keystone/Kconfig"
870
Russell King95b8f202010-01-14 11:43:54 +0000871source "arch/arm/mach-ks8695/Kconfig"
872
Carlo Caione3b8f5032014-09-10 22:16:59 +0200873source "arch/arm/mach-meson/Kconfig"
874
Jonas Jensen17723fd32013-12-18 13:58:45 +0100875source "arch/arm/mach-moxart/Kconfig"
876
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200877source "arch/arm/mach-mv78xx0/Kconfig"
878
Shawn Guo3995eb82012-09-13 19:48:07 +0800879source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
Matthias Bruggerf682a212014-05-13 01:06:13 +0200881source "arch/arm/mach-mediatek/Kconfig"
882
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800883source "arch/arm/mach-mxs/Kconfig"
884
Russell King95b8f202010-01-14 11:43:54 +0000885source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800886
Russell King95b8f202010-01-14 11:43:54 +0000887source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000888
Daniel Tang9851ca52013-06-11 18:40:17 +1000889source "arch/arm/mach-nspire/Kconfig"
890
Tony Lindgrend48af152005-07-10 19:58:17 +0100891source "arch/arm/plat-omap/Kconfig"
892
893source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894
Tony Lindgren1dbae812005-11-10 14:26:51 +0000895source "arch/arm/mach-omap2/Kconfig"
896
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400897source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400898
Rob Herring387798b2012-09-06 13:41:12 -0500899source "arch/arm/mach-picoxcell/Kconfig"
900
Russell King95b8f202010-01-14 11:43:54 +0000901source "arch/arm/mach-pxa/Kconfig"
902source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
Russell King95b8f202010-01-14 11:43:54 +0000904source "arch/arm/mach-mmp/Kconfig"
905
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600906source "arch/arm/mach-qcom/Kconfig"
907
Russell King95b8f202010-01-14 11:43:54 +0000908source "arch/arm/mach-realview/Kconfig"
909
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200910source "arch/arm/mach-rockchip/Kconfig"
911
Russell King95b8f202010-01-14 11:43:54 +0000912source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300913
Rob Herring387798b2012-09-06 13:41:12 -0500914source "arch/arm/mach-socfpga/Kconfig"
915
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100916source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100917
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100918source "arch/arm/mach-sti/Kconfig"
919
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900920source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921
Ben Dooks431107e2010-01-26 10:11:04 +0900922source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100923
Kukjin Kim170f4e42010-02-24 16:40:44 +0900924source "arch/arm/mach-s5pv210/Kconfig"
925
Kukjin Kim83014572011-11-06 13:54:56 +0900926source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500927source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900928
Russell King882d01f2010-03-02 23:40:15 +0000929source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
Maxime Ripard3b526342012-11-08 12:40:16 +0100931source "arch/arm/mach-sunxi/Kconfig"
932
Barry Song156a0992012-08-23 13:41:58 +0800933source "arch/arm/mach-prima2/Kconfig"
934
Erik Gillingc5f80062010-01-21 16:53:02 -0800935source "arch/arm/mach-tegra/Kconfig"
936
Russell King95b8f202010-01-14 11:43:54 +0000937source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900939source "arch/arm/mach-uniphier/Kconfig"
940
Russell King95b8f202010-01-14 11:43:54 +0000941source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942
943source "arch/arm/mach-versatile/Kconfig"
944
Russell Kingceade892010-02-11 21:44:53 +0000945source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000946source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000947
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300948source "arch/arm/mach-vt8500/Kconfig"
949
wanzongshun7ec80dd2008-12-03 03:55:38 +0100950source "arch/arm/mach-w90x900/Kconfig"
951
Jun Nieacede512015-04-28 17:18:05 +0800952source "arch/arm/mach-zx/Kconfig"
953
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600954source "arch/arm/mach-zynq/Kconfig"
955
Stefan Agner499f1642015-05-21 00:35:44 +0200956# ARMv7-M architecture
957config ARCH_EFM32
958 bool "Energy Micro efm32"
959 depends on ARM_SINGLE_ARMV7M
960 select ARCH_REQUIRE_GPIOLIB
961 help
962 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
963 processors.
964
965config ARCH_LPC18XX
966 bool "NXP LPC18xx/LPC43xx"
967 depends on ARM_SINGLE_ARMV7M
968 select ARCH_HAS_RESET_CONTROLLER
969 select ARM_AMBA
970 select CLKSRC_LPC32XX
971 select PINCTRL
972 help
973 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
974 high performance microcontrollers.
975
976config ARCH_STM32
977 bool "STMicrolectronics STM32"
978 depends on ARM_SINGLE_ARMV7M
979 select ARCH_HAS_RESET_CONTROLLER
980 select ARMV7M_SYSTICK
981 select RESET_CONTROLLER
982 help
983 Support for STMicroelectronics STM32 processors.
984
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985# Definitions to make life easier
986config ARCH_ACORN
987 bool
988
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100989config PLAT_IOP
990 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700991 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100992
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400993config PLAT_ORION
994 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100995 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100996 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100997 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200998 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400999
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001000config PLAT_ORION_LEGACY
1001 bool
1002 select PLAT_ORION
1003
Eric Miaobd5ce432009-01-20 12:06:01 +08001004config PLAT_PXA
1005 bool
1006
Russell Kingf4b8b312010-01-14 12:48:06 +00001007config PLAT_VERSATILE
1008 bool
1009
Russell Kinge3887712010-01-14 13:30:16 +00001010config ARM_TIMER_SP804
1011 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001012 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001013 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001014
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001015source "arch/arm/firmware/Kconfig"
1016
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017source arch/arm/mm/Kconfig
1018
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001019config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001020 bool "Enable iWMMXt support"
1021 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1022 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001023 help
1024 Enable support for iWMMXt context switching at run time if
1025 running on a CPU that supports it.
1026
eric miao52108642010-12-13 09:42:34 +01001027config MULTI_IRQ_HANDLER
1028 bool
1029 help
1030 Allow each machine to specify it's own IRQ handler at run time.
1031
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001032if !MMU
1033source "arch/arm/Kconfig-nommu"
1034endif
1035
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001036config PJ4B_ERRATA_4742
1037 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1038 depends on CPU_PJ4B && MACH_ARMADA_370
1039 default y
1040 help
1041 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1042 Event (WFE) IDLE states, a specific timing sensitivity exists between
1043 the retiring WFI/WFE instructions and the newly issued subsequent
1044 instructions. This sensitivity can result in a CPU hang scenario.
1045 Workaround:
1046 The software must insert either a Data Synchronization Barrier (DSB)
1047 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1048 instruction
1049
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001050config ARM_ERRATA_326103
1051 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1052 depends on CPU_V6
1053 help
1054 Executing a SWP instruction to read-only memory does not set bit 11
1055 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1056 treat the access as a read, preventing a COW from occurring and
1057 causing the faulting task to livelock.
1058
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001059config ARM_ERRATA_411920
1060 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001061 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001062 help
1063 Invalidation of the Instruction Cache operation can
1064 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1065 It does not affect the MPCore. This option enables the ARM Ltd.
1066 recommended workaround.
1067
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001068config ARM_ERRATA_430973
1069 bool "ARM errata: Stale prediction on replaced interworking branch"
1070 depends on CPU_V7
1071 help
1072 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001073 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001074 interworking branch is replaced with another code sequence at the
1075 same virtual address, whether due to self-modifying code or virtual
1076 to physical address re-mapping, Cortex-A8 does not recover from the
1077 stale interworking branch prediction. This results in Cortex-A8
1078 executing the new code sequence in the incorrect ARM or Thumb state.
1079 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1080 and also flushes the branch target cache at every context switch.
1081 Note that setting specific bits in the ACTLR register may not be
1082 available in non-secure mode.
1083
Catalin Marinas855c5512009-04-30 17:06:15 +01001084config ARM_ERRATA_458693
1085 bool "ARM errata: Processor deadlock when a false hazard is created"
1086 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001087 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001088 help
1089 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1090 erratum. For very specific sequences of memory operations, it is
1091 possible for a hazard condition intended for a cache line to instead
1092 be incorrectly associated with a different cache line. This false
1093 hazard might then cause a processor deadlock. The workaround enables
1094 the L1 caching of the NEON accesses and disables the PLD instruction
1095 in the ACTLR register. Note that setting specific bits in the ACTLR
1096 register may not be available in non-secure mode.
1097
Catalin Marinas0516e462009-04-30 17:06:20 +01001098config ARM_ERRATA_460075
1099 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1100 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001101 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001102 help
1103 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1104 erratum. Any asynchronous access to the L2 cache may encounter a
1105 situation in which recent store transactions to the L2 cache are lost
1106 and overwritten with stale memory contents from external memory. The
1107 workaround disables the write-allocate mode for the L2 cache via the
1108 ACTLR register. Note that setting specific bits in the ACTLR register
1109 may not be available in non-secure mode.
1110
Will Deacon9f050272010-09-14 09:51:43 +01001111config ARM_ERRATA_742230
1112 bool "ARM errata: DMB operation may be faulty"
1113 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001114 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001115 help
1116 This option enables the workaround for the 742230 Cortex-A9
1117 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1118 between two write operations may not ensure the correct visibility
1119 ordering of the two writes. This workaround sets a specific bit in
1120 the diagnostic register of the Cortex-A9 which causes the DMB
1121 instruction to behave as a DSB, ensuring the correct behaviour of
1122 the two writes.
1123
Will Deacona672e992010-09-14 09:53:02 +01001124config ARM_ERRATA_742231
1125 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1126 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001127 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001128 help
1129 This option enables the workaround for the 742231 Cortex-A9
1130 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1131 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1132 accessing some data located in the same cache line, may get corrupted
1133 data due to bad handling of the address hazard when the line gets
1134 replaced from one of the CPUs at the same time as another CPU is
1135 accessing it. This workaround sets specific bits in the diagnostic
1136 register of the Cortex-A9 which reduces the linefill issuing
1137 capabilities of the processor.
1138
Jon Medhurst69155792013-06-07 10:35:35 +01001139config ARM_ERRATA_643719
1140 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1141 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001142 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001143 help
1144 This option enables the workaround for the 643719 Cortex-A9 (prior to
1145 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1146 register returns zero when it should return one. The workaround
1147 corrects this value, ensuring cache maintenance operations which use
1148 it behave as intended and avoiding data corruption.
1149
Will Deaconcdf357f2010-08-05 11:20:51 +01001150config ARM_ERRATA_720789
1151 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001152 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001153 help
1154 This option enables the workaround for the 720789 Cortex-A9 (prior to
1155 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1156 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1157 As a consequence of this erratum, some TLB entries which should be
1158 invalidated are not, resulting in an incoherency in the system page
1159 tables. The workaround changes the TLB flushing routines to invalidate
1160 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001161
1162config ARM_ERRATA_743622
1163 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1164 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001165 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001166 help
1167 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001168 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001169 optimisation in the Cortex-A9 Store Buffer may lead to data
1170 corruption. This workaround sets a specific bit in the diagnostic
1171 register of the Cortex-A9 which disables the Store Buffer
1172 optimisation, preventing the defect from occurring. This has no
1173 visible impact on the overall performance or power consumption of the
1174 processor.
1175
Will Deacon9a27c272011-02-18 16:36:35 +01001176config ARM_ERRATA_751472
1177 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001178 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001179 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001180 help
1181 This option enables the workaround for the 751472 Cortex-A9 (prior
1182 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1183 completion of a following broadcasted operation if the second
1184 operation is received by a CPU before the ICIALLUIS has completed,
1185 potentially leading to corrupted entries in the cache or TLB.
1186
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001187config ARM_ERRATA_754322
1188 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1189 depends on CPU_V7
1190 help
1191 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1192 r3p*) erratum. A speculative memory access may cause a page table walk
1193 which starts prior to an ASID switch but completes afterwards. This
1194 can populate the micro-TLB with a stale entry which may be hit with
1195 the new ASID. This workaround places two dsb instructions in the mm
1196 switching code so that no page table walks can cross the ASID switch.
1197
Will Deacon5dab26a2011-03-04 12:38:54 +01001198config ARM_ERRATA_754327
1199 bool "ARM errata: no automatic Store Buffer drain"
1200 depends on CPU_V7 && SMP
1201 help
1202 This option enables the workaround for the 754327 Cortex-A9 (prior to
1203 r2p0) erratum. The Store Buffer does not have any automatic draining
1204 mechanism and therefore a livelock may occur if an external agent
1205 continuously polls a memory location waiting to observe an update.
1206 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1207 written polling loops from denying visibility of updates to memory.
1208
Catalin Marinas145e10e2011-08-15 11:04:41 +01001209config ARM_ERRATA_364296
1210 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001211 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001212 help
1213 This options enables the workaround for the 364296 ARM1136
1214 r0p2 erratum (possible cache data corruption with
1215 hit-under-miss enabled). It sets the undocumented bit 31 in
1216 the auxiliary control register and the FI bit in the control
1217 register, thus disabling hit-under-miss without putting the
1218 processor into full low interrupt latency mode. ARM11MPCore
1219 is not affected.
1220
Will Deaconf630c1b2011-09-15 11:45:15 +01001221config ARM_ERRATA_764369
1222 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1223 depends on CPU_V7 && SMP
1224 help
1225 This option enables the workaround for erratum 764369
1226 affecting Cortex-A9 MPCore with two or more processors (all
1227 current revisions). Under certain timing circumstances, a data
1228 cache line maintenance operation by MVA targeting an Inner
1229 Shareable memory region may fail to proceed up to either the
1230 Point of Coherency or to the Point of Unification of the
1231 system. This workaround adds a DSB instruction before the
1232 relevant cache maintenance functions and sets a specific bit
1233 in the diagnostic control register of the SCU.
1234
Simon Horman7253b852012-09-28 02:12:45 +01001235config ARM_ERRATA_775420
1236 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1237 depends on CPU_V7
1238 help
1239 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1240 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1241 operation aborts with MMU exception, it might cause the processor
1242 to deadlock. This workaround puts DSB before executing ISB if
1243 an abort may occur on cache maintenance.
1244
Catalin Marinas93dc6882013-03-26 23:35:04 +01001245config ARM_ERRATA_798181
1246 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1247 depends on CPU_V7 && SMP
1248 help
1249 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1250 adequately shooting down all use of the old entries. This
1251 option enables the Linux kernel workaround for this erratum
1252 which sends an IPI to the CPUs that are running the same ASID
1253 as the one being invalidated.
1254
Will Deacon84b65042013-08-20 17:29:55 +01001255config ARM_ERRATA_773022
1256 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1257 depends on CPU_V7
1258 help
1259 This option enables the workaround for the 773022 Cortex-A15
1260 (up to r0p4) erratum. In certain rare sequences of code, the
1261 loop buffer may deliver incorrect instructions. This
1262 workaround disables the loop buffer to avoid the erratum.
1263
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264endmenu
1265
1266source "arch/arm/common/Kconfig"
1267
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268menu "Bus support"
1269
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270config ISA
1271 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 help
1273 Find out whether you have ISA slots on your motherboard. ISA is the
1274 name of a bus system, i.e. the way the CPU talks to the other stuff
1275 inside your box. Other bus systems are PCI, EISA, MicroChannel
1276 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1277 newer boards don't support it. If you have ISA, say Y, otherwise N.
1278
Russell King065909b2006-01-04 15:44:16 +00001279# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280config ISA_DMA
1281 bool
Russell King065909b2006-01-04 15:44:16 +00001282 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283
Russell King065909b2006-01-04 15:44:16 +00001284# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001285config ISA_DMA_API
1286 bool
Al Viro5cae8412005-05-04 05:39:22 +01001287
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001289 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001290 help
1291 Find out whether you have a PCI motherboard. PCI is the name of a
1292 bus system, i.e. the way the CPU talks to the other stuff inside
1293 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1294 VESA. If you have PCI, say Y, otherwise N.
1295
Anton Vorontsov52882172010-04-19 13:20:49 +01001296config PCI_DOMAINS
1297 bool
1298 depends on PCI
1299
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001300config PCI_DOMAINS_GENERIC
1301 def_bool PCI_DOMAINS
1302
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001303config PCI_NANOENGINE
1304 bool "BSE nanoEngine PCI support"
1305 depends on SA1100_NANOENGINE
1306 help
1307 Enable PCI on the BSE nanoEngine board.
1308
Matthew Wilcox36e23592007-07-10 10:54:40 -06001309config PCI_SYSCALL
1310 def_bool PCI
1311
Mike Rapoporta0113a92007-11-25 08:55:34 +01001312config PCI_HOST_ITE8152
1313 bool
1314 depends on PCI && MACH_ARMCORE
1315 default y
1316 select DMABOUNCE
1317
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001319source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320
1321source "drivers/pcmcia/Kconfig"
1322
1323endmenu
1324
1325menu "Kernel Features"
1326
Dave Martin3b556582011-12-07 15:38:04 +00001327config HAVE_SMP
1328 bool
1329 help
1330 This option should be selected by machines which have an SMP-
1331 capable CPU.
1332
1333 The only effect of this option is to make the SMP-related
1334 options available to the user for configuration.
1335
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001337 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001338 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001339 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001340 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001341 depends on MMU || ARM_MPU
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
Michal Simek6a4d8f32015-01-15 08:42:42 +01001512 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001513 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1514 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001515 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001516 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001517 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001518 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001519 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001520 default 0
1521 help
1522 Maximum number of GPIOs in the system.
1523
1524 If unsure, leave the default value.
1525
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001526source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527
Russell Kingc9218b12013-04-27 23:31:10 +01001528config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001529 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001530 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001531 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001532 default 128 if SOC_AT91RM9200
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001533 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001534 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001535
1536choice
Russell King47d84682013-09-10 23:47:55 +01001537 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001538 prompt "Timer frequency"
1539
1540config HZ_100
1541 bool "100 Hz"
1542
1543config HZ_200
1544 bool "200 Hz"
1545
1546config HZ_250
1547 bool "250 Hz"
1548
1549config HZ_300
1550 bool "300 Hz"
1551
1552config HZ_500
1553 bool "500 Hz"
1554
1555config HZ_1000
1556 bool "1000 Hz"
1557
1558endchoice
1559
1560config HZ
1561 int
Russell King47d84682013-09-10 23:47:55 +01001562 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001563 default 100 if HZ_100
1564 default 200 if HZ_200
1565 default 250 if HZ_250
1566 default 300 if HZ_300
1567 default 500 if HZ_500
1568 default 1000
1569
1570config SCHED_HRTICK
1571 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001572
Catalin Marinas16c79652009-07-24 12:33:02 +01001573config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001574 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001575 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001576 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001577 select AEABI
1578 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001579 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001580 help
1581 By enabling this option, the kernel will be compiled in
1582 Thumb-2 mode. A compiler/assembler that understand the unified
1583 ARM-Thumb syntax is needed.
1584
1585 If unsure, say N.
1586
Dave Martin6f685c52011-03-03 11:41:12 +01001587config THUMB2_AVOID_R_ARM_THM_JUMP11
1588 bool "Work around buggy Thumb-2 short branch relocations in gas"
1589 depends on THUMB2_KERNEL && MODULES
1590 default y
1591 help
1592 Various binutils versions can resolve Thumb-2 branches to
1593 locally-defined, preemptible global symbols as short-range "b.n"
1594 branch instructions.
1595
1596 This is a problem, because there's no guarantee the final
1597 destination of the symbol, or any candidate locations for a
1598 trampoline, are within range of the branch. For this reason, the
1599 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1600 relocation in modules at all, and it makes little sense to add
1601 support.
1602
1603 The symptom is that the kernel fails with an "unsupported
1604 relocation" error when loading some modules.
1605
1606 Until fixed tools are available, passing
1607 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1608 code which hits this problem, at the cost of a bit of extra runtime
1609 stack usage in some cases.
1610
1611 The problem is described in more detail at:
1612 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1613
1614 Only Thumb-2 kernels are affected.
1615
1616 Unless you are sure your tools don't have this problem, say Y.
1617
Catalin Marinas0becb082009-07-24 12:32:53 +01001618config ARM_ASM_UNIFIED
1619 bool
1620
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001621config AEABI
1622 bool "Use the ARM EABI to compile the kernel"
1623 help
1624 This option allows for the kernel to be compiled using the latest
1625 ARM ABI (aka EABI). This is only useful if you are using a user
1626 space environment that is also compiled with EABI.
1627
1628 Since there are major incompatibilities between the legacy ABI and
1629 EABI, especially with regard to structure member alignment, this
1630 option also changes the kernel syscall calling convention to
1631 disambiguate both ABIs and allow for backward compatibility support
1632 (selected with CONFIG_OABI_COMPAT).
1633
1634 To use this you need GCC version 4.0.0 or later.
1635
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001636config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001637 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001638 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001639 help
1640 This option preserves the old syscall interface along with the
1641 new (ARM EABI) one. It also provides a compatibility layer to
1642 intercept syscalls that have structure arguments which layout
1643 in memory differs between the legacy ABI and the new ARM EABI
1644 (only for non "thumb" binaries). This option adds a tiny
1645 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001646
1647 The seccomp filter system will not be available when this is
1648 selected, since there is no way yet to sensibly distinguish
1649 between calling conventions during filtering.
1650
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001651 If you know you'll be using only pure EABI user space then you
1652 can say N here. If this option is not selected and you attempt
1653 to execute a legacy ABI binary then the result will be
1654 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001655 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001656
Mel Gormaneb335752009-05-13 17:34:48 +01001657config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001658 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001659
Russell King05944d72006-11-30 20:43:51 +00001660config ARCH_SPARSEMEM_ENABLE
1661 bool
1662
Russell King07a2f732008-10-01 21:39:58 +01001663config ARCH_SPARSEMEM_DEFAULT
1664 def_bool ARCH_SPARSEMEM_ENABLE
1665
Russell King05944d72006-11-30 20:43:51 +00001666config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001667 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001668
Will Deacon7b7bf492011-05-19 13:21:14 +01001669config HAVE_ARCH_PFN_VALID
1670 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1671
Steve Capperb8cd51a2014-10-09 15:29:20 -07001672config HAVE_GENERIC_RCU_GUP
1673 def_bool y
1674 depends on ARM_LPAE
1675
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001676config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001677 bool "High Memory Support"
1678 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001679 help
1680 The address space of ARM processors is only 4 Gigabytes large
1681 and it has to accommodate user address space, kernel address
1682 space as well as some memory mapped IO. That means that, if you
1683 have a large amount of physical memory and/or IO, not all of the
1684 memory can be "permanently mapped" by the kernel. The physical
1685 memory that is not permanently mapped is called "high memory".
1686
1687 Depending on the selected kernel/user memory split, minimum
1688 vmalloc space and actual amount of RAM, you may not need this
1689 option which should result in a slightly faster kernel.
1690
1691 If unsure, say n.
1692
Russell King65cec8e2009-08-17 20:02:06 +01001693config HIGHPTE
1694 bool "Allocate 2nd-level pagetables from highmem"
1695 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001696
Jamie Iles1b8873a2010-02-02 20:25:44 +01001697config HW_PERF_EVENTS
1698 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001699 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001700 default y
1701 help
1702 Enable hardware performance counter support for perf events. If
1703 disabled, perf events will use software events only.
1704
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001705config SYS_SUPPORTS_HUGETLBFS
1706 def_bool y
1707 depends on ARM_LPAE
1708
Catalin Marinas8d962502012-07-25 14:39:26 +01001709config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1710 def_bool y
1711 depends on ARM_LPAE
1712
Steven Capper4bfab202013-07-26 14:58:22 +01001713config ARCH_WANT_GENERAL_HUGETLB
1714 def_bool y
1715
Dave Hansen3f22ab22005-06-23 00:07:43 -07001716source "mm/Kconfig"
1717
Magnus Dammc1b2d972010-07-05 10:00:11 +01001718config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001719 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1720 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001721 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001722 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001723 default "11"
1724 help
1725 The kernel memory allocator divides physically contiguous memory
1726 blocks into "zones", where each zone is a power of two number of
1727 pages. This option selects the largest power of two that the kernel
1728 keeps in the memory allocator. If you need to allocate very large
1729 blocks of physically contiguous memory, then you may need to
1730 increase this value.
1731
1732 This config option is actually maximum order plus one. For example,
1733 a value of 11 means that the largest free memory block is 2^10 pages.
1734
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735config ALIGNMENT_TRAP
1736 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001737 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001739 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001740 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001741 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001742 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1743 address divisible by 4. On 32-bit ARM processors, these non-aligned
1744 fetch/store instructions will be emulated in software if you say
1745 here, which has a severe performance impact. This is necessary for
1746 correct operation of some network protocols. With an IP-only
1747 configuration it is safe to say N, otherwise say Y.
1748
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001749config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001750 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1751 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001752 default y if CPU_FEROCEON
1753 help
1754 Implement faster copy_to_user and clear_user methods for CPU
1755 cores where a 8-word STM instruction give significantly higher
1756 memory write throughput than a sequence of individual 32bit stores.
1757
1758 A possible side effect is a slight increase in scheduling latency
1759 between threads sharing the same address space if they invoke
1760 such copy operations with large buffers.
1761
1762 However, if the CPU data cache is using a write-allocate mode,
1763 this option is unlikely to provide any performance gain.
1764
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001765config SECCOMP
1766 bool
1767 prompt "Enable seccomp to safely compute untrusted bytecode"
1768 ---help---
1769 This kernel feature is useful for number crunching applications
1770 that may need to compute untrusted bytecode during their
1771 execution. By using pipes or other transports made available to
1772 the process as file descriptors supporting the read/write
1773 syscalls, it's possible to isolate those applications in
1774 their own address space using seccomp. Once seccomp is
1775 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1776 and the task is only allowed to execute a few safe syscalls
1777 defined by each seccomp mode.
1778
Stefano Stabellini06e62952013-10-15 15:47:14 +00001779config SWIOTLB
1780 def_bool y
1781
1782config IOMMU_HELPER
1783 def_bool SWIOTLB
1784
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001785config XEN_DOM0
1786 def_bool y
1787 depends on XEN
1788
1789config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001790 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001791 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001792 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001793 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001794 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001795 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001796 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001797 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001798 help
1799 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1800
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801endmenu
1802
1803menu "Boot options"
1804
Grant Likely9eb8f672011-04-28 14:27:20 -06001805config USE_OF
1806 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001807 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001808 select OF
1809 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001810 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001811 help
1812 Include support for flattened device tree machine descriptions.
1813
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001814config ATAGS
1815 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1816 default y
1817 help
1818 This is the traditional way of passing data to the kernel at boot
1819 time. If you are solely relying on the flattened device tree (or
1820 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1821 to remove ATAGS support from your kernel binary. If unsure,
1822 leave this to y.
1823
1824config DEPRECATED_PARAM_STRUCT
1825 bool "Provide old way to pass kernel parameters"
1826 depends on ATAGS
1827 help
1828 This was deprecated in 2001 and announced to live on for 5 years.
1829 Some old boot loaders still use this way.
1830
Linus Torvalds1da177e2005-04-16 15:20:36 -07001831# Compressed boot loader in ROM. Yes, we really want to ask about
1832# TEXT and BSS so we preserve their values in the config files.
1833config ZBOOT_ROM_TEXT
1834 hex "Compressed ROM boot loader base address"
1835 default "0"
1836 help
1837 The physical address at which the ROM-able zImage is to be
1838 placed in the target. Platforms which normally make use of
1839 ROM-able zImage formats normally set this to a suitable
1840 value in their defconfig file.
1841
1842 If ZBOOT_ROM is not enabled, this has no effect.
1843
1844config ZBOOT_ROM_BSS
1845 hex "Compressed ROM boot loader BSS address"
1846 default "0"
1847 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001848 The base address of an area of read/write memory in the target
1849 for the ROM-able zImage which must be available while the
1850 decompressor is running. It must be large enough to hold the
1851 entire decompressed kernel plus an additional 128 KiB.
1852 Platforms which normally make use of ROM-able zImage formats
1853 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001854
1855 If ZBOOT_ROM is not enabled, this has no effect.
1856
1857config ZBOOT_ROM
1858 bool "Compressed boot loader in ROM/flash"
1859 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001860 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861 help
1862 Say Y here if you intend to execute your compressed kernel image
1863 (zImage) directly from ROM or flash. If unsure, say N.
1864
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001865config ARM_APPENDED_DTB
1866 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001867 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001868 help
1869 With this option, the boot code will look for a device tree binary
1870 (DTB) appended to zImage
1871 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1872
1873 This is meant as a backward compatibility convenience for those
1874 systems with a bootloader that can't be upgraded to accommodate
1875 the documented boot protocol using a device tree.
1876
1877 Beware that there is very little in terms of protection against
1878 this option being confused by leftover garbage in memory that might
1879 look like a DTB header after a reboot if no actual DTB is appended
1880 to zImage. Do not leave this option active in a production kernel
1881 if you don't intend to always append a DTB. Proper passing of the
1882 location into r2 of a bootloader provided DTB is always preferable
1883 to this option.
1884
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001885config ARM_ATAG_DTB_COMPAT
1886 bool "Supplement the appended DTB with traditional ATAG information"
1887 depends on ARM_APPENDED_DTB
1888 help
1889 Some old bootloaders can't be updated to a DTB capable one, yet
1890 they provide ATAGs with memory configuration, the ramdisk address,
1891 the kernel cmdline string, etc. Such information is dynamically
1892 provided by the bootloader and can't always be stored in a static
1893 DTB. To allow a device tree enabled kernel to be used with such
1894 bootloaders, this option allows zImage to extract the information
1895 from the ATAG list and store it at run time into the appended DTB.
1896
Genoud Richardd0f34a12012-06-26 16:37:59 +01001897choice
1898 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1899 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1900
1901config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1902 bool "Use bootloader kernel arguments if available"
1903 help
1904 Uses the command-line options passed by the boot loader instead of
1905 the device tree bootargs property. If the boot loader doesn't provide
1906 any, the device tree bootargs property will be used.
1907
1908config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1909 bool "Extend with bootloader kernel arguments"
1910 help
1911 The command-line arguments provided by the boot loader will be
1912 appended to the the device tree bootargs property.
1913
1914endchoice
1915
Linus Torvalds1da177e2005-04-16 15:20:36 -07001916config CMDLINE
1917 string "Default kernel command string"
1918 default ""
1919 help
1920 On some architectures (EBSA110 and CATS), there is currently no way
1921 for the boot loader to pass arguments to the kernel. For these
1922 architectures, you should supply some command-line options at build
1923 time by entering them here. As a minimum, you should specify the
1924 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1925
Victor Boivie4394c122011-05-04 17:07:55 +01001926choice
1927 prompt "Kernel command line type" if CMDLINE != ""
1928 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001929 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001930
1931config CMDLINE_FROM_BOOTLOADER
1932 bool "Use bootloader kernel arguments if available"
1933 help
1934 Uses the command-line options passed by the boot loader. If
1935 the boot loader doesn't provide any, the default kernel command
1936 string provided in CMDLINE will be used.
1937
1938config CMDLINE_EXTEND
1939 bool "Extend bootloader kernel arguments"
1940 help
1941 The command-line arguments provided by the boot loader will be
1942 appended to the default kernel command string.
1943
Alexander Holler92d20402010-02-16 19:04:53 +01001944config CMDLINE_FORCE
1945 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001946 help
1947 Always use the default kernel command string, even if the boot
1948 loader passes other arguments to the kernel.
1949 This is useful if you cannot or don't want to change the
1950 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001951endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001952
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953config XIP_KERNEL
1954 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001955 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001956 help
1957 Execute-In-Place allows the kernel to run from non-volatile storage
1958 directly addressable by the CPU, such as NOR flash. This saves RAM
1959 space since the text section of the kernel is not loaded from flash
1960 to RAM. Read-write sections, such as the data section and stack,
1961 are still copied to RAM. The XIP kernel is not compressed since
1962 it has to run directly from flash, so it will take more space to
1963 store it. The flash address used to link the kernel object files,
1964 and for storing it, is configuration dependent. Therefore, if you
1965 say Y here, you must know the proper physical address where to
1966 store the kernel image depending on your own flash memory usage.
1967
1968 Also note that the make target becomes "make xipImage" rather than
1969 "make zImage" or "make Image". The final kernel binary to put in
1970 ROM memory will be arch/arm/boot/xipImage.
1971
1972 If unsure, say N.
1973
1974config XIP_PHYS_ADDR
1975 hex "XIP Kernel Physical Location"
1976 depends on XIP_KERNEL
1977 default "0x00080000"
1978 help
1979 This is the physical address in your flash memory the kernel will
1980 be linked for and stored to. This address is dependent on your
1981 own flash usage.
1982
Richard Purdiec587e4a2007-02-06 21:29:00 +01001983config KEXEC
1984 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001985 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001986 help
1987 kexec is a system call that implements the ability to shutdown your
1988 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001989 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001990 you can start any kernel with it, not just Linux.
1991
1992 It is an ongoing process to be certain the hardware in a machine
1993 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02001994 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01001995
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001996config ATAGS_PROC
1997 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001998 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01001999 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002000 help
2001 Should the atags used to boot the kernel be exported in an "atags"
2002 file in procfs. Useful with kexec.
2003
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002004config CRASH_DUMP
2005 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002006 help
2007 Generate crash dump after being started by kexec. This should
2008 be normally only set in special crash dump kernels which are
2009 loaded in the main kernel with kexec-tools into a specially
2010 reserved region and then later executed after a crash by
2011 kdump/kexec. The crash dump kernel must be compiled to a
2012 memory address not used by the main kernel
2013
2014 For more details see Documentation/kdump/kdump.txt
2015
Eric Miaoe69edc792010-07-05 15:56:50 +02002016config AUTO_ZRELADDR
2017 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002018 help
2019 ZRELADDR is the physical address where the decompressed kernel
2020 image will be placed. If AUTO_ZRELADDR is selected, the address
2021 will be determined at run-time by masking the current IP with
2022 0xf8000000. This assumes the zImage being placed in the first 128MB
2023 from start of memory.
2024
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025endmenu
2026
Russell Kingac9d7ef2008-08-18 17:26:00 +01002027menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028
Linus Torvalds1da177e2005-04-16 15:20:36 -07002029source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002030
Russell Kingac9d7ef2008-08-18 17:26:00 +01002031source "drivers/cpuidle/Kconfig"
2032
2033endmenu
2034
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035menu "Floating point emulation"
2036
2037comment "At least one emulation must be selected"
2038
2039config FPE_NWFPE
2040 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002041 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042 ---help---
2043 Say Y to include the NWFPE floating point emulator in the kernel.
2044 This is necessary to run most binaries. Linux does not currently
2045 support floating point hardware so you need to say Y here even if
2046 your machine has an FPA or floating point co-processor podule.
2047
2048 You may say N here if you are going to load the Acorn FPEmulator
2049 early in the bootup.
2050
2051config FPE_NWFPE_XP
2052 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002053 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002054 help
2055 Say Y to include 80-bit support in the kernel floating-point
2056 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2057 Note that gcc does not generate 80-bit operations by default,
2058 so in most cases this option only enlarges the size of the
2059 floating point emulator without any good reason.
2060
2061 You almost surely want to say N here.
2062
2063config FPE_FASTFPE
2064 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002065 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066 ---help---
2067 Say Y here to include the FAST floating point emulator in the kernel.
2068 This is an experimental much faster emulator which now also has full
2069 precision for the mantissa. It does not support any exceptions.
2070 It is very simple, and approximately 3-6 times faster than NWFPE.
2071
2072 It should be sufficient for most programs. It may be not suitable
2073 for scientific calculations, but you have to check this for yourself.
2074 If you do not feel you need a faster FP emulation you should better
2075 choose NWFPE.
2076
2077config VFP
2078 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002079 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080 help
2081 Say Y to include VFP support code in the kernel. This is needed
2082 if your hardware includes a VFP unit.
2083
2084 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2085 release notes and additional status information.
2086
2087 Say N if your target does not have VFP hardware.
2088
Catalin Marinas25ebee02007-09-25 15:22:24 +01002089config VFPv3
2090 bool
2091 depends on VFP
2092 default y if CPU_V7
2093
Catalin Marinasb5872db2008-01-10 19:16:17 +01002094config NEON
2095 bool "Advanced SIMD (NEON) Extension support"
2096 depends on VFPv3 && CPU_V7
2097 help
2098 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2099 Extension.
2100
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002101config KERNEL_MODE_NEON
2102 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002103 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002104 help
2105 Say Y to include support for NEON in kernel mode.
2106
Linus Torvalds1da177e2005-04-16 15:20:36 -07002107endmenu
2108
2109menu "Userspace binary formats"
2110
2111source "fs/Kconfig.binfmt"
2112
Linus Torvalds1da177e2005-04-16 15:20:36 -07002113endmenu
2114
2115menu "Power management options"
2116
Russell Kingeceab4a2005-11-15 11:31:41 +00002117source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002118
Johannes Bergf4cb5702007-12-08 02:14:00 +01002119config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002120 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002121 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002122 def_bool y
2123
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002124config ARM_CPU_SUSPEND
2125 def_bool PM_SLEEP
2126
Sebastian Capella603fb422014-03-25 01:20:29 +01002127config ARCH_HIBERNATION_POSSIBLE
2128 bool
2129 depends on MMU
2130 default y if ARCH_SUSPEND_POSSIBLE
2131
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132endmenu
2133
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002134source "net/Kconfig"
2135
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002136source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137
Kumar Gala916f7432015-02-26 15:49:09 -06002138source "drivers/firmware/Kconfig"
2139
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140source "fs/Kconfig"
2141
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142source "arch/arm/Kconfig.debug"
2143
2144source "security/Kconfig"
2145
2146source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002147if CRYPTO
2148source "arch/arm/crypto/Kconfig"
2149endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150
2151source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002152
2153source "arch/arm/kvm/Kconfig"