blob: 75920edec3cc726bc092f4dc61d06ab354be4798 [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
337 select CLKSRC_OF
338 select COMMON_CLK
339 select CPU_V7M
340 select GENERIC_CLOCKEVENTS
341 select NO_IOPORT_MAP
342 select SPARSE_IRQ
343 select USE_OF
344
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100345config ARCH_REALVIEW
346 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100347 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100348 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100349 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200350 select COMMON_CLK
351 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100352 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100353 select GPIO_PL061 if GPIOLIB
354 select ICST
355 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000356 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000357 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100358 help
359 This enables support for ARM Ltd RealView boards.
360
361config ARCH_VERSATILE
362 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100363 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100364 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100365 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100366 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100367 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100368 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900369 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000370 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000371 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100372 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000373 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100374 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100375 help
376 This enables support for ARM Ltd Versatile board.
377
Russell King93e22562012-10-12 14:20:52 +0100378config ARCH_CLPS711X
379 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400380 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400381 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400382 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100383 select COMMON_CLK
384 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400385 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400386 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400387 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100388 help
389 Support for Cirrus Logic 711x/721x/731x based boards.
390
Russell King788c9702009-04-26 14:21:59 +0100391config ARCH_GEMINI
392 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100393 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200394 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100395 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200396 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100397 help
398 Support for the Cortina Systems Gemini family SoCs
399
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400config ARCH_EBSA110
401 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100402 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000403 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100404 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600405 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400406 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700407 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 help
409 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000410 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 Ethernet interface, two PCMCIA sockets, two serial ports and a
412 parallel port.
413
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100414config ARCH_EFM32
415 bool "Energy Micro efm32"
416 depends on !MMU
417 select ARCH_REQUIRE_GPIOLIB
418 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100419 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100420 select CLKSRC_OF
421 select COMMON_CLK
422 select CPU_V7M
423 select GENERIC_CLOCKEVENTS
424 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700425 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100426 select SPARSE_IRQ
427 select USE_OF
428 help
429 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
430 processors.
431
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000432config ARCH_EP93XX
433 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100434 select ARCH_HAS_HOLES_MEMORYMODEL
435 select ARCH_REQUIRE_GPIOLIB
436 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000437 select ARM_AMBA
438 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100439 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100440 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000441 help
442 This enables support for the Cirrus EP93xx series of CPUs.
443
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444config ARCH_FOOTBRIDGE
445 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000446 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000448 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200449 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600450 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400451 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000452 help
453 Support for systems based on the DC21285 companion chip
454 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100456config ARCH_NETX
457 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100458 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100459 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000460 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100461 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000462 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100463 This enables support for systems based on the Hilscher NetX Soc
464
Russell King3b938be2007-05-12 11:25:44 +0100465config ARCH_IOP13XX
466 bool "IOP13xx-based"
467 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100468 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400469 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600470 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100471 select PCI
472 select PLAT_IOP
473 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000474 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100475 help
476 Support for Intel's IOP13XX (XScale) family of processors.
477
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100478config ARCH_IOP32X
479 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100480 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100481 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000482 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200483 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600484 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100485 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100486 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000487 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100488 Support for Intel's 80219 and IOP32X (XScale) family of
489 processors.
490
491config ARCH_IOP33X
492 bool "IOP33x-based"
493 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100494 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000495 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200496 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600497 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100498 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100499 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100500 help
501 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502
Russell King3b938be2007-05-12 11:25:44 +0100503config ARCH_IXP4XX
504 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100505 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500506 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100507 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100508 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100509 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000510 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100511 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100512 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100513 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600514 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200515 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100516 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100517 help
Russell King3b938be2007-05-12 11:25:44 +0100518 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100519
Saeed Bisharaedabd382009-08-06 15:12:43 +0300520config ARCH_DOVE
521 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300522 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100523 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300524 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100525 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100526 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100527 select PINCTRL
528 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200529 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300530 help
531 Support for the Marvell Dove SoC 88AP510
532
Russell King788c9702009-04-26 14:21:59 +0100533config ARCH_MV78XX0
534 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700535 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100536 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100537 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100538 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100539 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200540 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100541 help
542 Support for the following Marvell MV78xx0 series SoCs:
543 MV781x0, MV782x0.
544
545config ARCH_ORION5X
546 bool "Marvell Orion"
547 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700548 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100549 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100550 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100551 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100552 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200553 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100554 help
555 Support for the following Marvell Orion 5x series SoCs:
556 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
557 Orion-2 (5281), Orion-1-90 (6183).
558
559config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500560 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100561 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100562 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100563 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100564 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100565 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800566 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800567 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800568 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800569 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100570 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400571 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100572 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500573 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100574
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100575config ARCH_KS8695
576 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100577 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200578 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100579 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200580 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100581 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100582 help
583 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
584 System-on-Chip devices.
585
Russell King788c9702009-04-26 14:21:59 +0100586config ARCH_W90X900
587 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100588 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100589 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100590 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100591 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100592 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200593 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100594 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
595 At present, the w90x900 has been renamed nuc900, regarding
596 the ARM series product line, you can login the following
597 link address to know more.
598
599 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
600 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400601
Joachim Eastwoode8d235d2015-05-12 00:00:47 +0200602config ARCH_LPC18XX
603 bool "NXP LPC18xx/LPC43xx"
604 depends on !MMU
605 select ARCH_HAS_RESET_CONTROLLER
606 select ARCH_REQUIRE_GPIOLIB
607 select ARM_AMBA
608 select ARM_NVIC
609 select AUTO_ZRELADDR
610 select CLKSRC_LPC32XX
611 select COMMON_CLK
612 select CPU_V7M
613 select GENERIC_CLOCKEVENTS
614 select NO_IOPORT_MAP
615 select PINCTRL
616 select SPARSE_IRQ
617 select USE_OF
618 help
619 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
620 high performance microcontrollers.
621
Russell King93e22562012-10-12 14:20:52 +0100622config ARCH_LPC32XX
623 bool "NXP LPC32XX"
624 select ARCH_REQUIRE_GPIOLIB
625 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000626 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100627 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100628 select CPU_ARM926T
629 select GENERIC_CLOCKEVENTS
630 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100631 select USE_OF
632 help
633 Support for the NXP LPC32XX family of processors
634
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700636 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100637 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100638 select ARCH_MTD_XIP
639 select ARCH_REQUIRE_GPIOLIB
640 select ARM_CPU_SUSPEND if PM
641 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100642 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100643 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100644 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200645 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100646 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800647 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100648 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100649 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100650 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800651 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800652 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000653 help
eric miao2c8086a2007-09-11 19:13:17 -0700654 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100656config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100657 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100658 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100659 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900660 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900661 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100662 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800663 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800664 select HAVE_ARM_TWD if SMP
Dave Martin3b556582011-12-07 15:38:04 +0000665 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000666 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000667 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700668 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200669 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100670 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900671 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100672 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000673 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100674 Support for Renesas ARM SoC platforms using a non-multiplatform
675 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
676 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000677
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678config ARCH_RPC
679 bool "RiscPC"
680 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100681 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100682 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000683 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100684 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100685 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200686 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100687 select HAVE_PATA_PLATFORM
688 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600689 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400690 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700691 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100692 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 help
694 On the Acorn Risc-PC, Linux can support the internal IDE disk and
695 CD-ROM interface, serial and parallel port, and the floppy drive.
696
697config ARCH_SA1100
698 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100699 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700700 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100701 select ARCH_SPARSEMEM_ENABLE
702 select CLKDEV_LOOKUP
703 select CLKSRC_MMIO
704 select CPU_FREQ
705 select CPU_SA1100
706 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200707 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100708 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100709 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100710 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400711 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100712 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000713 help
714 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900716config ARCH_S3C24XX
717 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900718 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100719 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100720 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200721 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800722 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900723 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900724 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900725 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100726 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900727 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600728 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900729 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900731 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
732 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
733 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
734 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900735
Ben Dooksa08ab632008-10-21 14:06:39 +0100736config ARCH_S3C64XX
737 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900738 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200739 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100740 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100741 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100742 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200743 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900744 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900745 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800746 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900747 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900748 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900749 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100750 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700751 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100752 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100753 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100754 select S3C_DEV_NAND
755 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900756 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900757 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900758 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100759 help
760 Samsung S3C64XX series based systems
761
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100762config ARCH_DAVINCI
763 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100764 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700765 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100766 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700767 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100768 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100769 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100770 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500771 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530772 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100773 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100774 help
775 Support for TI's DaVinci platform.
776
Tony Lindgrena0694862013-01-11 11:24:20 -0800777config ARCH_OMAP1
778 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600779 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100780 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800781 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100782 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200783 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100784 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100785 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800786 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800787 select HAVE_IDE
788 select IRQ_DOMAIN
789 select NEED_MACH_IO_H if PCCARD
790 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100791 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800792 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800793
Maxime Coquelin9b799b72015-05-09 09:53:54 +0200794config ARCH_STM32
795 bool "STMicrolectronics STM32"
796 depends on !MMU
797 select ARCH_HAS_RESET_CONTROLLER
798 select ARM_NVIC
799 select ARMV7M_SYSTICK
800 select AUTO_ZRELADDR
801 select CLKSRC_OF
802 select COMMON_CLK
803 select CPU_V7M
804 select GENERIC_CLOCKEVENTS
805 select NO_IOPORT_MAP
806 select RESET_CONTROLLER
807 select SPARSE_IRQ
808 select USE_OF
809 help
810 Support for STMicroelectronics STM32 processors.
811
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812endchoice
813
Rob Herring387798b2012-09-06 13:41:12 -0500814menu "Multiple platform selection"
815 depends on ARCH_MULTIPLATFORM
816
817comment "CPU Core family selection"
818
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100819config ARCH_MULTI_V4
820 bool "ARMv4 based platforms (FA526)"
821 depends on !ARCH_MULTI_V6_V7
822 select ARCH_MULTI_V4_V5
823 select CPU_FA526
824
Rob Herring387798b2012-09-06 13:41:12 -0500825config ARCH_MULTI_V4T
826 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500827 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100828 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200829 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
830 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
831 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500832
833config ARCH_MULTI_V5
834 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500835 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100836 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100837 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200838 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
839 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500840
841config ARCH_MULTI_V4_V5
842 bool
843
844config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800845 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500846 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600847 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500848
849config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800850 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500851 default y
852 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100853 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600854 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500855
856config ARCH_MULTI_V6_V7
857 bool
Rob Herring9352b052014-01-31 15:36:10 -0600858 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500859
860config ARCH_MULTI_CPU_AUTO
861 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
862 select ARCH_MULTI_V5
863
864endmenu
865
Rob Herring05e2a3d2013-12-05 10:04:54 -0600866config ARCH_VIRT
867 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600868 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600869 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600870 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600871 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600872
Russell Kingccf50e22010-03-15 19:03:06 +0000873#
874# This is sorted alphabetically by mach-* pathname. However, plat-*
875# Kconfigs may be included either alphabetically (according to the
876# plat- suffix) or along side the corresponding mach-* source.
877#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200878source "arch/arm/mach-mvebu/Kconfig"
879
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200880source "arch/arm/mach-alpine/Kconfig"
881
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100882source "arch/arm/mach-asm9260/Kconfig"
883
Russell King95b8f202010-01-14 11:43:54 +0000884source "arch/arm/mach-at91/Kconfig"
885
Anders Berg1d22924e2014-05-23 11:08:35 +0200886source "arch/arm/mach-axxia/Kconfig"
887
Christian Daudt8ac49e02012-11-19 09:46:10 -0800888source "arch/arm/mach-bcm/Kconfig"
889
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200890source "arch/arm/mach-berlin/Kconfig"
891
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892source "arch/arm/mach-clps711x/Kconfig"
893
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300894source "arch/arm/mach-cns3xxx/Kconfig"
895
Russell King95b8f202010-01-14 11:43:54 +0000896source "arch/arm/mach-davinci/Kconfig"
897
Baruch Siachdf8d7422015-01-14 10:40:30 +0200898source "arch/arm/mach-digicolor/Kconfig"
899
Russell King95b8f202010-01-14 11:43:54 +0000900source "arch/arm/mach-dove/Kconfig"
901
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000902source "arch/arm/mach-ep93xx/Kconfig"
903
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904source "arch/arm/mach-footbridge/Kconfig"
905
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200906source "arch/arm/mach-gemini/Kconfig"
907
Rob Herring387798b2012-09-06 13:41:12 -0500908source "arch/arm/mach-highbank/Kconfig"
909
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800910source "arch/arm/mach-hisi/Kconfig"
911
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912source "arch/arm/mach-integrator/Kconfig"
913
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100914source "arch/arm/mach-iop32x/Kconfig"
915
916source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917
Dan Williams285f5fa2006-12-07 02:59:39 +0100918source "arch/arm/mach-iop13xx/Kconfig"
919
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920source "arch/arm/mach-ixp4xx/Kconfig"
921
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400922source "arch/arm/mach-keystone/Kconfig"
923
Russell King95b8f202010-01-14 11:43:54 +0000924source "arch/arm/mach-ks8695/Kconfig"
925
Carlo Caione3b8f5032014-09-10 22:16:59 +0200926source "arch/arm/mach-meson/Kconfig"
927
Jonas Jensen17723fd32013-12-18 13:58:45 +0100928source "arch/arm/mach-moxart/Kconfig"
929
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200930source "arch/arm/mach-mv78xx0/Kconfig"
931
Shawn Guo3995eb82012-09-13 19:48:07 +0800932source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933
Matthias Bruggerf682a212014-05-13 01:06:13 +0200934source "arch/arm/mach-mediatek/Kconfig"
935
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800936source "arch/arm/mach-mxs/Kconfig"
937
Russell King95b8f202010-01-14 11:43:54 +0000938source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800939
Russell King95b8f202010-01-14 11:43:54 +0000940source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000941
Daniel Tang9851ca52013-06-11 18:40:17 +1000942source "arch/arm/mach-nspire/Kconfig"
943
Tony Lindgrend48af152005-07-10 19:58:17 +0100944source "arch/arm/plat-omap/Kconfig"
945
946source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947
Tony Lindgren1dbae812005-11-10 14:26:51 +0000948source "arch/arm/mach-omap2/Kconfig"
949
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400950source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400951
Rob Herring387798b2012-09-06 13:41:12 -0500952source "arch/arm/mach-picoxcell/Kconfig"
953
Russell King95b8f202010-01-14 11:43:54 +0000954source "arch/arm/mach-pxa/Kconfig"
955source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
Russell King95b8f202010-01-14 11:43:54 +0000957source "arch/arm/mach-mmp/Kconfig"
958
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600959source "arch/arm/mach-qcom/Kconfig"
960
Russell King95b8f202010-01-14 11:43:54 +0000961source "arch/arm/mach-realview/Kconfig"
962
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200963source "arch/arm/mach-rockchip/Kconfig"
964
Russell King95b8f202010-01-14 11:43:54 +0000965source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300966
Rob Herring387798b2012-09-06 13:41:12 -0500967source "arch/arm/mach-socfpga/Kconfig"
968
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100969source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100970
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100971source "arch/arm/mach-sti/Kconfig"
972
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900973source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974
Ben Dooks431107e2010-01-26 10:11:04 +0900975source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100976
Kukjin Kim170f4e42010-02-24 16:40:44 +0900977source "arch/arm/mach-s5pv210/Kconfig"
978
Kukjin Kim83014572011-11-06 13:54:56 +0900979source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500980source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900981
Russell King882d01f2010-03-02 23:40:15 +0000982source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983
Maxime Ripard3b526342012-11-08 12:40:16 +0100984source "arch/arm/mach-sunxi/Kconfig"
985
Barry Song156a0992012-08-23 13:41:58 +0800986source "arch/arm/mach-prima2/Kconfig"
987
Erik Gillingc5f80062010-01-21 16:53:02 -0800988source "arch/arm/mach-tegra/Kconfig"
989
Russell King95b8f202010-01-14 11:43:54 +0000990source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900992source "arch/arm/mach-uniphier/Kconfig"
993
Russell King95b8f202010-01-14 11:43:54 +0000994source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995
996source "arch/arm/mach-versatile/Kconfig"
997
Russell Kingceade892010-02-11 21:44:53 +0000998source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000999source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +00001000
Tony Prisk6f35f9a2012-10-11 20:13:09 +13001001source "arch/arm/mach-vt8500/Kconfig"
1002
wanzongshun7ec80dd2008-12-03 03:55:38 +01001003source "arch/arm/mach-w90x900/Kconfig"
1004
Jun Nieacede512015-04-28 17:18:05 +08001005source "arch/arm/mach-zx/Kconfig"
1006
Josh Cartwright9a45eb62012-11-19 11:38:29 -06001007source "arch/arm/mach-zynq/Kconfig"
1008
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009# Definitions to make life easier
1010config ARCH_ACORN
1011 bool
1012
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001013config PLAT_IOP
1014 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -07001015 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001016
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001017config PLAT_ORION
1018 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001019 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +01001020 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001021 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +02001022 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001023
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001024config PLAT_ORION_LEGACY
1025 bool
1026 select PLAT_ORION
1027
Eric Miaobd5ce432009-01-20 12:06:01 +08001028config PLAT_PXA
1029 bool
1030
Russell Kingf4b8b312010-01-14 12:48:06 +00001031config PLAT_VERSATILE
1032 bool
1033
Russell Kinge3887712010-01-14 13:30:16 +00001034config ARM_TIMER_SP804
1035 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001036 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001037 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001038
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001039source "arch/arm/firmware/Kconfig"
1040
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041source arch/arm/mm/Kconfig
1042
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001043config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001044 bool "Enable iWMMXt support"
1045 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1046 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001047 help
1048 Enable support for iWMMXt context switching at run time if
1049 running on a CPU that supports it.
1050
eric miao52108642010-12-13 09:42:34 +01001051config MULTI_IRQ_HANDLER
1052 bool
1053 help
1054 Allow each machine to specify it's own IRQ handler at run time.
1055
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001056if !MMU
1057source "arch/arm/Kconfig-nommu"
1058endif
1059
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001060config PJ4B_ERRATA_4742
1061 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1062 depends on CPU_PJ4B && MACH_ARMADA_370
1063 default y
1064 help
1065 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1066 Event (WFE) IDLE states, a specific timing sensitivity exists between
1067 the retiring WFI/WFE instructions and the newly issued subsequent
1068 instructions. This sensitivity can result in a CPU hang scenario.
1069 Workaround:
1070 The software must insert either a Data Synchronization Barrier (DSB)
1071 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1072 instruction
1073
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001074config ARM_ERRATA_326103
1075 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1076 depends on CPU_V6
1077 help
1078 Executing a SWP instruction to read-only memory does not set bit 11
1079 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1080 treat the access as a read, preventing a COW from occurring and
1081 causing the faulting task to livelock.
1082
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001083config ARM_ERRATA_411920
1084 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001085 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001086 help
1087 Invalidation of the Instruction Cache operation can
1088 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1089 It does not affect the MPCore. This option enables the ARM Ltd.
1090 recommended workaround.
1091
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001092config ARM_ERRATA_430973
1093 bool "ARM errata: Stale prediction on replaced interworking branch"
1094 depends on CPU_V7
1095 help
1096 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001097 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001098 interworking branch is replaced with another code sequence at the
1099 same virtual address, whether due to self-modifying code or virtual
1100 to physical address re-mapping, Cortex-A8 does not recover from the
1101 stale interworking branch prediction. This results in Cortex-A8
1102 executing the new code sequence in the incorrect ARM or Thumb state.
1103 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1104 and also flushes the branch target cache at every context switch.
1105 Note that setting specific bits in the ACTLR register may not be
1106 available in non-secure mode.
1107
Catalin Marinas855c5512009-04-30 17:06:15 +01001108config ARM_ERRATA_458693
1109 bool "ARM errata: Processor deadlock when a false hazard is created"
1110 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001111 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001112 help
1113 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1114 erratum. For very specific sequences of memory operations, it is
1115 possible for a hazard condition intended for a cache line to instead
1116 be incorrectly associated with a different cache line. This false
1117 hazard might then cause a processor deadlock. The workaround enables
1118 the L1 caching of the NEON accesses and disables the PLD instruction
1119 in the ACTLR register. Note that setting specific bits in the ACTLR
1120 register may not be available in non-secure mode.
1121
Catalin Marinas0516e462009-04-30 17:06:20 +01001122config ARM_ERRATA_460075
1123 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1124 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001125 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001126 help
1127 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1128 erratum. Any asynchronous access to the L2 cache may encounter a
1129 situation in which recent store transactions to the L2 cache are lost
1130 and overwritten with stale memory contents from external memory. The
1131 workaround disables the write-allocate mode for the L2 cache via the
1132 ACTLR register. Note that setting specific bits in the ACTLR register
1133 may not be available in non-secure mode.
1134
Will Deacon9f050272010-09-14 09:51:43 +01001135config ARM_ERRATA_742230
1136 bool "ARM errata: DMB operation may be faulty"
1137 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001138 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001139 help
1140 This option enables the workaround for the 742230 Cortex-A9
1141 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1142 between two write operations may not ensure the correct visibility
1143 ordering of the two writes. This workaround sets a specific bit in
1144 the diagnostic register of the Cortex-A9 which causes the DMB
1145 instruction to behave as a DSB, ensuring the correct behaviour of
1146 the two writes.
1147
Will Deacona672e992010-09-14 09:53:02 +01001148config ARM_ERRATA_742231
1149 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1150 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001151 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001152 help
1153 This option enables the workaround for the 742231 Cortex-A9
1154 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1155 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1156 accessing some data located in the same cache line, may get corrupted
1157 data due to bad handling of the address hazard when the line gets
1158 replaced from one of the CPUs at the same time as another CPU is
1159 accessing it. This workaround sets specific bits in the diagnostic
1160 register of the Cortex-A9 which reduces the linefill issuing
1161 capabilities of the processor.
1162
Jon Medhurst69155792013-06-07 10:35:35 +01001163config ARM_ERRATA_643719
1164 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1165 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001166 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001167 help
1168 This option enables the workaround for the 643719 Cortex-A9 (prior to
1169 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1170 register returns zero when it should return one. The workaround
1171 corrects this value, ensuring cache maintenance operations which use
1172 it behave as intended and avoiding data corruption.
1173
Will Deaconcdf357f2010-08-05 11:20:51 +01001174config ARM_ERRATA_720789
1175 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001176 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001177 help
1178 This option enables the workaround for the 720789 Cortex-A9 (prior to
1179 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1180 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1181 As a consequence of this erratum, some TLB entries which should be
1182 invalidated are not, resulting in an incoherency in the system page
1183 tables. The workaround changes the TLB flushing routines to invalidate
1184 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001185
1186config ARM_ERRATA_743622
1187 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1188 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001189 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001190 help
1191 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001192 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001193 optimisation in the Cortex-A9 Store Buffer may lead to data
1194 corruption. This workaround sets a specific bit in the diagnostic
1195 register of the Cortex-A9 which disables the Store Buffer
1196 optimisation, preventing the defect from occurring. This has no
1197 visible impact on the overall performance or power consumption of the
1198 processor.
1199
Will Deacon9a27c272011-02-18 16:36:35 +01001200config ARM_ERRATA_751472
1201 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001202 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001203 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001204 help
1205 This option enables the workaround for the 751472 Cortex-A9 (prior
1206 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1207 completion of a following broadcasted operation if the second
1208 operation is received by a CPU before the ICIALLUIS has completed,
1209 potentially leading to corrupted entries in the cache or TLB.
1210
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001211config ARM_ERRATA_754322
1212 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1213 depends on CPU_V7
1214 help
1215 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1216 r3p*) erratum. A speculative memory access may cause a page table walk
1217 which starts prior to an ASID switch but completes afterwards. This
1218 can populate the micro-TLB with a stale entry which may be hit with
1219 the new ASID. This workaround places two dsb instructions in the mm
1220 switching code so that no page table walks can cross the ASID switch.
1221
Will Deacon5dab26af2011-03-04 12:38:54 +01001222config ARM_ERRATA_754327
1223 bool "ARM errata: no automatic Store Buffer drain"
1224 depends on CPU_V7 && SMP
1225 help
1226 This option enables the workaround for the 754327 Cortex-A9 (prior to
1227 r2p0) erratum. The Store Buffer does not have any automatic draining
1228 mechanism and therefore a livelock may occur if an external agent
1229 continuously polls a memory location waiting to observe an update.
1230 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1231 written polling loops from denying visibility of updates to memory.
1232
Catalin Marinas145e10e2011-08-15 11:04:41 +01001233config ARM_ERRATA_364296
1234 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001235 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001236 help
1237 This options enables the workaround for the 364296 ARM1136
1238 r0p2 erratum (possible cache data corruption with
1239 hit-under-miss enabled). It sets the undocumented bit 31 in
1240 the auxiliary control register and the FI bit in the control
1241 register, thus disabling hit-under-miss without putting the
1242 processor into full low interrupt latency mode. ARM11MPCore
1243 is not affected.
1244
Will Deaconf630c1b2011-09-15 11:45:15 +01001245config ARM_ERRATA_764369
1246 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1247 depends on CPU_V7 && SMP
1248 help
1249 This option enables the workaround for erratum 764369
1250 affecting Cortex-A9 MPCore with two or more processors (all
1251 current revisions). Under certain timing circumstances, a data
1252 cache line maintenance operation by MVA targeting an Inner
1253 Shareable memory region may fail to proceed up to either the
1254 Point of Coherency or to the Point of Unification of the
1255 system. This workaround adds a DSB instruction before the
1256 relevant cache maintenance functions and sets a specific bit
1257 in the diagnostic control register of the SCU.
1258
Simon Horman7253b852012-09-28 02:12:45 +01001259config ARM_ERRATA_775420
1260 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1261 depends on CPU_V7
1262 help
1263 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1264 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1265 operation aborts with MMU exception, it might cause the processor
1266 to deadlock. This workaround puts DSB before executing ISB if
1267 an abort may occur on cache maintenance.
1268
Catalin Marinas93dc6882013-03-26 23:35:04 +01001269config ARM_ERRATA_798181
1270 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1271 depends on CPU_V7 && SMP
1272 help
1273 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1274 adequately shooting down all use of the old entries. This
1275 option enables the Linux kernel workaround for this erratum
1276 which sends an IPI to the CPUs that are running the same ASID
1277 as the one being invalidated.
1278
Will Deacon84b65042013-08-20 17:29:55 +01001279config ARM_ERRATA_773022
1280 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1281 depends on CPU_V7
1282 help
1283 This option enables the workaround for the 773022 Cortex-A15
1284 (up to r0p4) erratum. In certain rare sequences of code, the
1285 loop buffer may deliver incorrect instructions. This
1286 workaround disables the loop buffer to avoid the erratum.
1287
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288endmenu
1289
1290source "arch/arm/common/Kconfig"
1291
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292menu "Bus support"
1293
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294config ISA
1295 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296 help
1297 Find out whether you have ISA slots on your motherboard. ISA is the
1298 name of a bus system, i.e. the way the CPU talks to the other stuff
1299 inside your box. Other bus systems are PCI, EISA, MicroChannel
1300 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1301 newer boards don't support it. If you have ISA, say Y, otherwise N.
1302
Russell King065909b2006-01-04 15:44:16 +00001303# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304config ISA_DMA
1305 bool
Russell King065909b2006-01-04 15:44:16 +00001306 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307
Russell King065909b2006-01-04 15:44:16 +00001308# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001309config ISA_DMA_API
1310 bool
Al Viro5cae8412005-05-04 05:39:22 +01001311
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001313 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 help
1315 Find out whether you have a PCI motherboard. PCI is the name of a
1316 bus system, i.e. the way the CPU talks to the other stuff inside
1317 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1318 VESA. If you have PCI, say Y, otherwise N.
1319
Anton Vorontsov52882172010-04-19 13:20:49 +01001320config PCI_DOMAINS
1321 bool
1322 depends on PCI
1323
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001324config PCI_DOMAINS_GENERIC
1325 def_bool PCI_DOMAINS
1326
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001327config PCI_NANOENGINE
1328 bool "BSE nanoEngine PCI support"
1329 depends on SA1100_NANOENGINE
1330 help
1331 Enable PCI on the BSE nanoEngine board.
1332
Matthew Wilcox36e23592007-07-10 10:54:40 -06001333config PCI_SYSCALL
1334 def_bool PCI
1335
Mike Rapoporta0113a92007-11-25 08:55:34 +01001336config PCI_HOST_ITE8152
1337 bool
1338 depends on PCI && MACH_ARMCORE
1339 default y
1340 select DMABOUNCE
1341
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001343source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344
1345source "drivers/pcmcia/Kconfig"
1346
1347endmenu
1348
1349menu "Kernel Features"
1350
Dave Martin3b556582011-12-07 15:38:04 +00001351config HAVE_SMP
1352 bool
1353 help
1354 This option should be selected by machines which have an SMP-
1355 capable CPU.
1356
1357 The only effect of this option is to make the SMP-related
1358 options available to the user for configuration.
1359
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001361 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001362 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001363 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001364 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001365 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366 help
1367 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001368 a system with only one CPU, say N. If you have a system with more
1369 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001370
Robert Graffham4a474152014-01-23 15:55:29 -08001371 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001373 you say Y here, the kernel will run on many, but not all,
1374 uniprocessor machines. On a uniprocessor machine, the kernel
1375 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376
Paul Bolle395cf962011-08-15 02:02:26 +02001377 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001379 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380
1381 If you don't know what to do here, say N.
1382
Russell Kingf00ec482010-09-04 10:47:48 +01001383config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001384 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001385 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001386 default y
1387 help
1388 SMP kernels contain instructions which fail on non-SMP processors.
1389 Enabling this option allows the kernel to modify itself to make
1390 these instructions safe. Disabling it allows about 1K of space
1391 savings.
1392
1393 If you don't know what to do here, say Y.
1394
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001395config ARM_CPU_TOPOLOGY
1396 bool "Support cpu topology definition"
1397 depends on SMP && CPU_V7
1398 default y
1399 help
1400 Support ARM cpu topology definition. The MPIDR register defines
1401 affinity between processors which is then used to describe the cpu
1402 topology of an ARM System.
1403
1404config SCHED_MC
1405 bool "Multi-core scheduler support"
1406 depends on ARM_CPU_TOPOLOGY
1407 help
1408 Multi-core scheduler support improves the CPU scheduler's decision
1409 making when dealing with multi-core CPU chips at a cost of slightly
1410 increased overhead in some places. If unsure say N here.
1411
1412config SCHED_SMT
1413 bool "SMT scheduler support"
1414 depends on ARM_CPU_TOPOLOGY
1415 help
1416 Improves the CPU scheduler's decision making when dealing with
1417 MultiThreading at a cost of slightly increased overhead in some
1418 places. If unsure say N here.
1419
Russell Kinga8cbcd92009-05-16 11:51:14 +01001420config HAVE_ARM_SCU
1421 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001422 help
1423 This option enables support for the ARM system coherency unit
1424
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001425config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001426 bool "Architected timer support"
1427 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001428 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001429 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001430 help
1431 This option enables support for the ARM architected timer
1432
Russell Kingf32f4ce2009-05-16 12:14:21 +01001433config HAVE_ARM_TWD
1434 bool
1435 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001436 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001437 help
1438 This options enables support for the ARM timer and watchdog unit
1439
Nicolas Pitree8db2882012-04-12 02:45:22 -04001440config MCPM
1441 bool "Multi-Cluster Power Management"
1442 depends on CPU_V7 && SMP
1443 help
1444 This option provides the common power management infrastructure
1445 for (multi-)cluster based systems, such as big.LITTLE based
1446 systems.
1447
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001448config MCPM_QUAD_CLUSTER
1449 bool
1450 depends on MCPM
1451 help
1452 To avoid wasting resources unnecessarily, MCPM only supports up
1453 to 2 clusters by default.
1454 Platforms with 3 or 4 clusters that use MCPM must select this
1455 option to allow the additional clusters to be managed.
1456
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001457config BIG_LITTLE
1458 bool "big.LITTLE support (Experimental)"
1459 depends on CPU_V7 && SMP
1460 select MCPM
1461 help
1462 This option enables support selections for the big.LITTLE
1463 system architecture.
1464
1465config BL_SWITCHER
1466 bool "big.LITTLE switcher support"
1467 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001468 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001469 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001470 help
1471 The big.LITTLE "switcher" provides the core functionality to
1472 transparently handle transition between a cluster of A15's
1473 and a cluster of A7's in a big.LITTLE system.
1474
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001475config BL_SWITCHER_DUMMY_IF
1476 tristate "Simple big.LITTLE switcher user interface"
1477 depends on BL_SWITCHER && DEBUG_KERNEL
1478 help
1479 This is a simple and dummy char dev interface to control
1480 the big.LITTLE switcher core code. It is meant for
1481 debugging purposes only.
1482
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001483choice
1484 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001485 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001486 default VMSPLIT_3G
1487 help
1488 Select the desired split between kernel and user memory.
1489
1490 If you are not absolutely sure what you are doing, leave this
1491 option alone!
1492
1493 config VMSPLIT_3G
1494 bool "3G/1G user/kernel split"
1495 config VMSPLIT_2G
1496 bool "2G/2G user/kernel split"
1497 config VMSPLIT_1G
1498 bool "1G/3G user/kernel split"
1499endchoice
1500
1501config PAGE_OFFSET
1502 hex
Russell King006fa252014-02-26 19:40:46 +00001503 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001504 default 0x40000000 if VMSPLIT_1G
1505 default 0x80000000 if VMSPLIT_2G
1506 default 0xC0000000
1507
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508config NR_CPUS
1509 int "Maximum number of CPUs (2-32)"
1510 range 2 32
1511 depends on SMP
1512 default "4"
1513
Russell Kinga054a812005-11-02 22:24:33 +00001514config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001515 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001516 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001517 help
1518 Say Y here to experiment with turning CPUs off and on. CPUs
1519 can be controlled through /sys/devices/system/cpu.
1520
Will Deacon2bdd4242012-12-12 19:20:52 +00001521config ARM_PSCI
1522 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1523 depends on CPU_V7
1524 help
1525 Say Y here if you want Linux to communicate with system firmware
1526 implementing the PSCI specification for CPU-centric power
1527 management operations described in ARM document number ARM DEN
1528 0022A ("Power State Coordination Interface System Software on
1529 ARM processors").
1530
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001531# The GPIO number here must be sorted by descending number. In case of
1532# a multiplatform kernel, we just want the highest value required by the
1533# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001534config ARCH_NR_GPIO
1535 int
Michal Simek6a4d8f32015-01-15 08:42:42 +01001536 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001537 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1538 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001539 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001540 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001541 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001542 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001543 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001544 default 0
1545 help
1546 Maximum number of GPIOs in the system.
1547
1548 If unsure, leave the default value.
1549
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001550source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001551
Russell Kingc9218b12013-04-27 23:31:10 +01001552config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001553 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001554 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001555 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001556 default 128 if SOC_AT91RM9200
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001557 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001558 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001559
1560choice
Russell King47d84682013-09-10 23:47:55 +01001561 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001562 prompt "Timer frequency"
1563
1564config HZ_100
1565 bool "100 Hz"
1566
1567config HZ_200
1568 bool "200 Hz"
1569
1570config HZ_250
1571 bool "250 Hz"
1572
1573config HZ_300
1574 bool "300 Hz"
1575
1576config HZ_500
1577 bool "500 Hz"
1578
1579config HZ_1000
1580 bool "1000 Hz"
1581
1582endchoice
1583
1584config HZ
1585 int
Russell King47d84682013-09-10 23:47:55 +01001586 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001587 default 100 if HZ_100
1588 default 200 if HZ_200
1589 default 250 if HZ_250
1590 default 300 if HZ_300
1591 default 500 if HZ_500
1592 default 1000
1593
1594config SCHED_HRTICK
1595 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001596
Catalin Marinas16c79652009-07-24 12:33:02 +01001597config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001598 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001599 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001600 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001601 select AEABI
1602 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001603 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001604 help
1605 By enabling this option, the kernel will be compiled in
1606 Thumb-2 mode. A compiler/assembler that understand the unified
1607 ARM-Thumb syntax is needed.
1608
1609 If unsure, say N.
1610
Dave Martin6f685c52011-03-03 11:41:12 +01001611config THUMB2_AVOID_R_ARM_THM_JUMP11
1612 bool "Work around buggy Thumb-2 short branch relocations in gas"
1613 depends on THUMB2_KERNEL && MODULES
1614 default y
1615 help
1616 Various binutils versions can resolve Thumb-2 branches to
1617 locally-defined, preemptible global symbols as short-range "b.n"
1618 branch instructions.
1619
1620 This is a problem, because there's no guarantee the final
1621 destination of the symbol, or any candidate locations for a
1622 trampoline, are within range of the branch. For this reason, the
1623 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1624 relocation in modules at all, and it makes little sense to add
1625 support.
1626
1627 The symptom is that the kernel fails with an "unsupported
1628 relocation" error when loading some modules.
1629
1630 Until fixed tools are available, passing
1631 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1632 code which hits this problem, at the cost of a bit of extra runtime
1633 stack usage in some cases.
1634
1635 The problem is described in more detail at:
1636 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1637
1638 Only Thumb-2 kernels are affected.
1639
1640 Unless you are sure your tools don't have this problem, say Y.
1641
Catalin Marinas0becb082009-07-24 12:32:53 +01001642config ARM_ASM_UNIFIED
1643 bool
1644
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001645config AEABI
1646 bool "Use the ARM EABI to compile the kernel"
1647 help
1648 This option allows for the kernel to be compiled using the latest
1649 ARM ABI (aka EABI). This is only useful if you are using a user
1650 space environment that is also compiled with EABI.
1651
1652 Since there are major incompatibilities between the legacy ABI and
1653 EABI, especially with regard to structure member alignment, this
1654 option also changes the kernel syscall calling convention to
1655 disambiguate both ABIs and allow for backward compatibility support
1656 (selected with CONFIG_OABI_COMPAT).
1657
1658 To use this you need GCC version 4.0.0 or later.
1659
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001660config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001661 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001662 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001663 help
1664 This option preserves the old syscall interface along with the
1665 new (ARM EABI) one. It also provides a compatibility layer to
1666 intercept syscalls that have structure arguments which layout
1667 in memory differs between the legacy ABI and the new ARM EABI
1668 (only for non "thumb" binaries). This option adds a tiny
1669 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001670
1671 The seccomp filter system will not be available when this is
1672 selected, since there is no way yet to sensibly distinguish
1673 between calling conventions during filtering.
1674
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001675 If you know you'll be using only pure EABI user space then you
1676 can say N here. If this option is not selected and you attempt
1677 to execute a legacy ABI binary then the result will be
1678 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001679 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001680
Mel Gormaneb335752009-05-13 17:34:48 +01001681config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001682 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001683
Russell King05944d72006-11-30 20:43:51 +00001684config ARCH_SPARSEMEM_ENABLE
1685 bool
1686
Russell King07a2f732008-10-01 21:39:58 +01001687config ARCH_SPARSEMEM_DEFAULT
1688 def_bool ARCH_SPARSEMEM_ENABLE
1689
Russell King05944d72006-11-30 20:43:51 +00001690config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001691 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001692
Will Deacon7b7bf492011-05-19 13:21:14 +01001693config HAVE_ARCH_PFN_VALID
1694 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1695
Steve Capperb8cd51a2014-10-09 15:29:20 -07001696config HAVE_GENERIC_RCU_GUP
1697 def_bool y
1698 depends on ARM_LPAE
1699
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001700config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001701 bool "High Memory Support"
1702 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001703 help
1704 The address space of ARM processors is only 4 Gigabytes large
1705 and it has to accommodate user address space, kernel address
1706 space as well as some memory mapped IO. That means that, if you
1707 have a large amount of physical memory and/or IO, not all of the
1708 memory can be "permanently mapped" by the kernel. The physical
1709 memory that is not permanently mapped is called "high memory".
1710
1711 Depending on the selected kernel/user memory split, minimum
1712 vmalloc space and actual amount of RAM, you may not need this
1713 option which should result in a slightly faster kernel.
1714
1715 If unsure, say n.
1716
Russell King65cec8e2009-08-17 20:02:06 +01001717config HIGHPTE
1718 bool "Allocate 2nd-level pagetables from highmem"
1719 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001720
Jamie Iles1b8873a2010-02-02 20:25:44 +01001721config HW_PERF_EVENTS
1722 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001723 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001724 default y
1725 help
1726 Enable hardware performance counter support for perf events. If
1727 disabled, perf events will use software events only.
1728
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001729config SYS_SUPPORTS_HUGETLBFS
1730 def_bool y
1731 depends on ARM_LPAE
1732
Catalin Marinas8d962502012-07-25 14:39:26 +01001733config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1734 def_bool y
1735 depends on ARM_LPAE
1736
Steven Capper4bfab202013-07-26 14:58:22 +01001737config ARCH_WANT_GENERAL_HUGETLB
1738 def_bool y
1739
Dave Hansen3f22ab22005-06-23 00:07:43 -07001740source "mm/Kconfig"
1741
Magnus Dammc1b2d972010-07-05 10:00:11 +01001742config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001743 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1744 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001745 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001746 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001747 default "11"
1748 help
1749 The kernel memory allocator divides physically contiguous memory
1750 blocks into "zones", where each zone is a power of two number of
1751 pages. This option selects the largest power of two that the kernel
1752 keeps in the memory allocator. If you need to allocate very large
1753 blocks of physically contiguous memory, then you may need to
1754 increase this value.
1755
1756 This config option is actually maximum order plus one. For example,
1757 a value of 11 means that the largest free memory block is 2^10 pages.
1758
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759config ALIGNMENT_TRAP
1760 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001761 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001763 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001765 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1767 address divisible by 4. On 32-bit ARM processors, these non-aligned
1768 fetch/store instructions will be emulated in software if you say
1769 here, which has a severe performance impact. This is necessary for
1770 correct operation of some network protocols. With an IP-only
1771 configuration it is safe to say N, otherwise say Y.
1772
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001773config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001774 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1775 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001776 default y if CPU_FEROCEON
1777 help
1778 Implement faster copy_to_user and clear_user methods for CPU
1779 cores where a 8-word STM instruction give significantly higher
1780 memory write throughput than a sequence of individual 32bit stores.
1781
1782 A possible side effect is a slight increase in scheduling latency
1783 between threads sharing the same address space if they invoke
1784 such copy operations with large buffers.
1785
1786 However, if the CPU data cache is using a write-allocate mode,
1787 this option is unlikely to provide any performance gain.
1788
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001789config SECCOMP
1790 bool
1791 prompt "Enable seccomp to safely compute untrusted bytecode"
1792 ---help---
1793 This kernel feature is useful for number crunching applications
1794 that may need to compute untrusted bytecode during their
1795 execution. By using pipes or other transports made available to
1796 the process as file descriptors supporting the read/write
1797 syscalls, it's possible to isolate those applications in
1798 their own address space using seccomp. Once seccomp is
1799 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1800 and the task is only allowed to execute a few safe syscalls
1801 defined by each seccomp mode.
1802
Stefano Stabellini06e62952013-10-15 15:47:14 +00001803config SWIOTLB
1804 def_bool y
1805
1806config IOMMU_HELPER
1807 def_bool SWIOTLB
1808
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001809config XEN_DOM0
1810 def_bool y
1811 depends on XEN
1812
1813config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001814 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001815 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001816 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001817 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001818 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001819 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001820 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001821 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001822 help
1823 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1824
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825endmenu
1826
1827menu "Boot options"
1828
Grant Likely9eb8f672011-04-28 14:27:20 -06001829config USE_OF
1830 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001831 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001832 select OF
1833 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001834 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001835 help
1836 Include support for flattened device tree machine descriptions.
1837
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001838config ATAGS
1839 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1840 default y
1841 help
1842 This is the traditional way of passing data to the kernel at boot
1843 time. If you are solely relying on the flattened device tree (or
1844 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1845 to remove ATAGS support from your kernel binary. If unsure,
1846 leave this to y.
1847
1848config DEPRECATED_PARAM_STRUCT
1849 bool "Provide old way to pass kernel parameters"
1850 depends on ATAGS
1851 help
1852 This was deprecated in 2001 and announced to live on for 5 years.
1853 Some old boot loaders still use this way.
1854
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855# Compressed boot loader in ROM. Yes, we really want to ask about
1856# TEXT and BSS so we preserve their values in the config files.
1857config ZBOOT_ROM_TEXT
1858 hex "Compressed ROM boot loader base address"
1859 default "0"
1860 help
1861 The physical address at which the ROM-able zImage is to be
1862 placed in the target. Platforms which normally make use of
1863 ROM-able zImage formats normally set this to a suitable
1864 value in their defconfig file.
1865
1866 If ZBOOT_ROM is not enabled, this has no effect.
1867
1868config ZBOOT_ROM_BSS
1869 hex "Compressed ROM boot loader BSS address"
1870 default "0"
1871 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001872 The base address of an area of read/write memory in the target
1873 for the ROM-able zImage which must be available while the
1874 decompressor is running. It must be large enough to hold the
1875 entire decompressed kernel plus an additional 128 KiB.
1876 Platforms which normally make use of ROM-able zImage formats
1877 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001878
1879 If ZBOOT_ROM is not enabled, this has no effect.
1880
1881config ZBOOT_ROM
1882 bool "Compressed boot loader in ROM/flash"
1883 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001884 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885 help
1886 Say Y here if you intend to execute your compressed kernel image
1887 (zImage) directly from ROM or flash. If unsure, say N.
1888
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001889config ARM_APPENDED_DTB
1890 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001891 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001892 help
1893 With this option, the boot code will look for a device tree binary
1894 (DTB) appended to zImage
1895 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1896
1897 This is meant as a backward compatibility convenience for those
1898 systems with a bootloader that can't be upgraded to accommodate
1899 the documented boot protocol using a device tree.
1900
1901 Beware that there is very little in terms of protection against
1902 this option being confused by leftover garbage in memory that might
1903 look like a DTB header after a reboot if no actual DTB is appended
1904 to zImage. Do not leave this option active in a production kernel
1905 if you don't intend to always append a DTB. Proper passing of the
1906 location into r2 of a bootloader provided DTB is always preferable
1907 to this option.
1908
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001909config ARM_ATAG_DTB_COMPAT
1910 bool "Supplement the appended DTB with traditional ATAG information"
1911 depends on ARM_APPENDED_DTB
1912 help
1913 Some old bootloaders can't be updated to a DTB capable one, yet
1914 they provide ATAGs with memory configuration, the ramdisk address,
1915 the kernel cmdline string, etc. Such information is dynamically
1916 provided by the bootloader and can't always be stored in a static
1917 DTB. To allow a device tree enabled kernel to be used with such
1918 bootloaders, this option allows zImage to extract the information
1919 from the ATAG list and store it at run time into the appended DTB.
1920
Genoud Richardd0f34a112012-06-26 16:37:59 +01001921choice
1922 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1923 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1924
1925config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1926 bool "Use bootloader kernel arguments if available"
1927 help
1928 Uses the command-line options passed by the boot loader instead of
1929 the device tree bootargs property. If the boot loader doesn't provide
1930 any, the device tree bootargs property will be used.
1931
1932config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1933 bool "Extend with bootloader kernel arguments"
1934 help
1935 The command-line arguments provided by the boot loader will be
1936 appended to the the device tree bootargs property.
1937
1938endchoice
1939
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940config CMDLINE
1941 string "Default kernel command string"
1942 default ""
1943 help
1944 On some architectures (EBSA110 and CATS), there is currently no way
1945 for the boot loader to pass arguments to the kernel. For these
1946 architectures, you should supply some command-line options at build
1947 time by entering them here. As a minimum, you should specify the
1948 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1949
Victor Boivie4394c122011-05-04 17:07:55 +01001950choice
1951 prompt "Kernel command line type" if CMDLINE != ""
1952 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001953 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001954
1955config CMDLINE_FROM_BOOTLOADER
1956 bool "Use bootloader kernel arguments if available"
1957 help
1958 Uses the command-line options passed by the boot loader. If
1959 the boot loader doesn't provide any, the default kernel command
1960 string provided in CMDLINE will be used.
1961
1962config CMDLINE_EXTEND
1963 bool "Extend bootloader kernel arguments"
1964 help
1965 The command-line arguments provided by the boot loader will be
1966 appended to the default kernel command string.
1967
Alexander Holler92d20402010-02-16 19:04:53 +01001968config CMDLINE_FORCE
1969 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001970 help
1971 Always use the default kernel command string, even if the boot
1972 loader passes other arguments to the kernel.
1973 This is useful if you cannot or don't want to change the
1974 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001975endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001976
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977config XIP_KERNEL
1978 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001979 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980 help
1981 Execute-In-Place allows the kernel to run from non-volatile storage
1982 directly addressable by the CPU, such as NOR flash. This saves RAM
1983 space since the text section of the kernel is not loaded from flash
1984 to RAM. Read-write sections, such as the data section and stack,
1985 are still copied to RAM. The XIP kernel is not compressed since
1986 it has to run directly from flash, so it will take more space to
1987 store it. The flash address used to link the kernel object files,
1988 and for storing it, is configuration dependent. Therefore, if you
1989 say Y here, you must know the proper physical address where to
1990 store the kernel image depending on your own flash memory usage.
1991
1992 Also note that the make target becomes "make xipImage" rather than
1993 "make zImage" or "make Image". The final kernel binary to put in
1994 ROM memory will be arch/arm/boot/xipImage.
1995
1996 If unsure, say N.
1997
1998config XIP_PHYS_ADDR
1999 hex "XIP Kernel Physical Location"
2000 depends on XIP_KERNEL
2001 default "0x00080000"
2002 help
2003 This is the physical address in your flash memory the kernel will
2004 be linked for and stored to. This address is dependent on your
2005 own flash usage.
2006
Richard Purdiec587e4a2007-02-06 21:29:00 +01002007config KEXEC
2008 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002009 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002010 help
2011 kexec is a system call that implements the ability to shutdown your
2012 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002013 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002014 you can start any kernel with it, not just Linux.
2015
2016 It is an ongoing process to be certain the hardware in a machine
2017 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002018 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002019
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002020config ATAGS_PROC
2021 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002022 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002023 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002024 help
2025 Should the atags used to boot the kernel be exported in an "atags"
2026 file in procfs. Useful with kexec.
2027
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002028config CRASH_DUMP
2029 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002030 help
2031 Generate crash dump after being started by kexec. This should
2032 be normally only set in special crash dump kernels which are
2033 loaded in the main kernel with kexec-tools into a specially
2034 reserved region and then later executed after a crash by
2035 kdump/kexec. The crash dump kernel must be compiled to a
2036 memory address not used by the main kernel
2037
2038 For more details see Documentation/kdump/kdump.txt
2039
Eric Miaoe69edc792010-07-05 15:56:50 +02002040config AUTO_ZRELADDR
2041 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002042 help
2043 ZRELADDR is the physical address where the decompressed kernel
2044 image will be placed. If AUTO_ZRELADDR is selected, the address
2045 will be determined at run-time by masking the current IP with
2046 0xf8000000. This assumes the zImage being placed in the first 128MB
2047 from start of memory.
2048
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049endmenu
2050
Russell Kingac9d7ef2008-08-18 17:26:00 +01002051menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002054
Russell Kingac9d7ef2008-08-18 17:26:00 +01002055source "drivers/cpuidle/Kconfig"
2056
2057endmenu
2058
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059menu "Floating point emulation"
2060
2061comment "At least one emulation must be selected"
2062
2063config FPE_NWFPE
2064 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002065 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066 ---help---
2067 Say Y to include the NWFPE floating point emulator in the kernel.
2068 This is necessary to run most binaries. Linux does not currently
2069 support floating point hardware so you need to say Y here even if
2070 your machine has an FPA or floating point co-processor podule.
2071
2072 You may say N here if you are going to load the Acorn FPEmulator
2073 early in the bootup.
2074
2075config FPE_NWFPE_XP
2076 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002077 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078 help
2079 Say Y to include 80-bit support in the kernel floating-point
2080 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2081 Note that gcc does not generate 80-bit operations by default,
2082 so in most cases this option only enlarges the size of the
2083 floating point emulator without any good reason.
2084
2085 You almost surely want to say N here.
2086
2087config FPE_FASTFPE
2088 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002089 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002090 ---help---
2091 Say Y here to include the FAST floating point emulator in the kernel.
2092 This is an experimental much faster emulator which now also has full
2093 precision for the mantissa. It does not support any exceptions.
2094 It is very simple, and approximately 3-6 times faster than NWFPE.
2095
2096 It should be sufficient for most programs. It may be not suitable
2097 for scientific calculations, but you have to check this for yourself.
2098 If you do not feel you need a faster FP emulation you should better
2099 choose NWFPE.
2100
2101config VFP
2102 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002103 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 help
2105 Say Y to include VFP support code in the kernel. This is needed
2106 if your hardware includes a VFP unit.
2107
2108 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2109 release notes and additional status information.
2110
2111 Say N if your target does not have VFP hardware.
2112
Catalin Marinas25ebee02007-09-25 15:22:24 +01002113config VFPv3
2114 bool
2115 depends on VFP
2116 default y if CPU_V7
2117
Catalin Marinasb5872db2008-01-10 19:16:17 +01002118config NEON
2119 bool "Advanced SIMD (NEON) Extension support"
2120 depends on VFPv3 && CPU_V7
2121 help
2122 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2123 Extension.
2124
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002125config KERNEL_MODE_NEON
2126 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002127 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002128 help
2129 Say Y to include support for NEON in kernel mode.
2130
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131endmenu
2132
2133menu "Userspace binary formats"
2134
2135source "fs/Kconfig.binfmt"
2136
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137endmenu
2138
2139menu "Power management options"
2140
Russell Kingeceab4a2005-11-15 11:31:41 +00002141source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142
Johannes Bergf4cb5702007-12-08 02:14:00 +01002143config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002144 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002145 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002146 def_bool y
2147
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002148config ARM_CPU_SUSPEND
2149 def_bool PM_SLEEP
2150
Sebastian Capella603fb422014-03-25 01:20:29 +01002151config ARCH_HIBERNATION_POSSIBLE
2152 bool
2153 depends on MMU
2154 default y if ARCH_SUSPEND_POSSIBLE
2155
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156endmenu
2157
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002158source "net/Kconfig"
2159
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002160source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161
Kumar Gala916f7432015-02-26 15:49:09 -06002162source "drivers/firmware/Kconfig"
2163
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164source "fs/Kconfig"
2165
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166source "arch/arm/Kconfig.debug"
2167
2168source "security/Kconfig"
2169
2170source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002171if CRYPTO
2172source "arch/arm/crypto/Kconfig"
2173endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174
2175source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002176
2177source "arch/arm/kvm/Kconfig"