blob: 80a2a14df6046492d4c14f350761e153f4d2bc19 [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
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100332config ARCH_REALVIEW
333 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100334 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100335 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100336 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200337 select COMMON_CLK
338 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100339 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100340 select GPIO_PL061 if GPIOLIB
341 select ICST
342 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000343 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000344 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100345 help
346 This enables support for ARM Ltd RealView boards.
347
348config ARCH_VERSATILE
349 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100350 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100351 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100352 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100353 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100354 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100355 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900356 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000357 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000358 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100359 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000360 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100361 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100362 help
363 This enables support for ARM Ltd Versatile board.
364
Russell King93e22562012-10-12 14:20:52 +0100365config ARCH_CLPS711X
366 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400367 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400368 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400369 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100370 select COMMON_CLK
371 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400372 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400373 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400374 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100375 help
376 Support for Cirrus Logic 711x/721x/731x based boards.
377
Russell King788c9702009-04-26 14:21:59 +0100378config ARCH_GEMINI
379 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100380 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200381 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100382 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200383 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100384 help
385 Support for the Cortina Systems Gemini family SoCs
386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387config ARCH_EBSA110
388 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100389 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000390 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100391 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600392 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400393 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700394 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 help
396 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000397 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 Ethernet interface, two PCMCIA sockets, two serial ports and a
399 parallel port.
400
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100401config ARCH_EFM32
402 bool "Energy Micro efm32"
403 depends on !MMU
404 select ARCH_REQUIRE_GPIOLIB
405 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100406 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100407 select CLKSRC_OF
408 select COMMON_CLK
409 select CPU_V7M
410 select GENERIC_CLOCKEVENTS
411 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700412 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100413 select SPARSE_IRQ
414 select USE_OF
415 help
416 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
417 processors.
418
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000419config ARCH_EP93XX
420 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100421 select ARCH_HAS_HOLES_MEMORYMODEL
422 select ARCH_REQUIRE_GPIOLIB
423 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000424 select ARM_AMBA
425 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100426 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100427 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000428 help
429 This enables support for the Cirrus EP93xx series of CPUs.
430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431config ARCH_FOOTBRIDGE
432 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000433 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000435 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200436 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600437 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400438 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000439 help
440 Support for systems based on the DC21285 companion chip
441 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100443config ARCH_NETX
444 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100445 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100446 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000447 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100448 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000449 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100450 This enables support for systems based on the Hilscher NetX Soc
451
Russell King3b938be2007-05-12 11:25:44 +0100452config ARCH_IOP13XX
453 bool "IOP13xx-based"
454 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100455 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400456 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600457 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100458 select PCI
459 select PLAT_IOP
460 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000461 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100462 help
463 Support for Intel's IOP13XX (XScale) family of processors.
464
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100465config ARCH_IOP32X
466 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100467 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100468 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000469 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200470 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600471 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100472 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100473 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000474 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100475 Support for Intel's 80219 and IOP32X (XScale) family of
476 processors.
477
478config ARCH_IOP33X
479 bool "IOP33x-based"
480 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100481 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000482 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200483 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600484 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100485 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100486 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100487 help
488 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
Russell King3b938be2007-05-12 11:25:44 +0100490config ARCH_IXP4XX
491 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100492 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500493 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100494 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100495 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100496 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000497 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100498 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100499 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100500 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600501 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200502 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100503 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100504 help
Russell King3b938be2007-05-12 11:25:44 +0100505 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100506
Saeed Bisharaedabd382009-08-06 15:12:43 +0300507config ARCH_DOVE
508 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300509 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100510 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300511 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100512 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100513 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100514 select PINCTRL
515 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200516 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300517 help
518 Support for the Marvell Dove SoC 88AP510
519
Russell King788c9702009-04-26 14:21:59 +0100520config ARCH_MV78XX0
521 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700522 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100523 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100524 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100525 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100526 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200527 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100528 help
529 Support for the following Marvell MV78xx0 series SoCs:
530 MV781x0, MV782x0.
531
532config ARCH_ORION5X
533 bool "Marvell Orion"
534 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700535 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100536 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100537 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100538 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100539 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200540 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100541 help
542 Support for the following Marvell Orion 5x series SoCs:
543 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
544 Orion-2 (5281), Orion-1-90 (6183).
545
546config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500547 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100548 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100549 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100550 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100551 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100552 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800553 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800554 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800555 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800556 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100557 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400558 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100559 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500560 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100561
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100562config ARCH_KS8695
563 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100564 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200565 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100566 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200567 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100568 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100569 help
570 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
571 System-on-Chip devices.
572
Russell King788c9702009-04-26 14:21:59 +0100573config ARCH_W90X900
574 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100575 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100576 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100577 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100578 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100579 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200580 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100581 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
582 At present, the w90x900 has been renamed nuc900, regarding
583 the ARM series product line, you can login the following
584 link address to know more.
585
586 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
587 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400588
Joachim Eastwoode8d235d2015-05-12 00:00:47 +0200589config ARCH_LPC18XX
590 bool "NXP LPC18xx/LPC43xx"
591 depends on !MMU
592 select ARCH_HAS_RESET_CONTROLLER
593 select ARCH_REQUIRE_GPIOLIB
594 select ARM_AMBA
595 select ARM_NVIC
596 select AUTO_ZRELADDR
597 select CLKSRC_LPC32XX
598 select COMMON_CLK
599 select CPU_V7M
600 select GENERIC_CLOCKEVENTS
601 select NO_IOPORT_MAP
602 select PINCTRL
603 select SPARSE_IRQ
604 select USE_OF
605 help
606 Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4
607 high performance microcontrollers.
608
Russell King93e22562012-10-12 14:20:52 +0100609config ARCH_LPC32XX
610 bool "NXP LPC32XX"
611 select ARCH_REQUIRE_GPIOLIB
612 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000613 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100614 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100615 select CPU_ARM926T
616 select GENERIC_CLOCKEVENTS
617 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100618 select USE_OF
619 help
620 Support for the NXP LPC32XX family of processors
621
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700623 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100624 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100625 select ARCH_MTD_XIP
626 select ARCH_REQUIRE_GPIOLIB
627 select ARM_CPU_SUSPEND if PM
628 select AUTO_ZRELADDR
Robert Jarzmika1c0a6a2015-02-07 22:54:03 +0100629 select COMMON_CLK
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100630 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100631 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200632 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100633 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800634 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100635 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100636 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100637 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800638 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800639 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000640 help
eric miao2c8086a2007-09-11 19:13:17 -0700641 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100643config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100644 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100645 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100646 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900647 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900648 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100649 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800650 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc22013-02-15 16:02:20 -0800651 select HAVE_ARM_TWD if SMP
Dave Martin3b556582011-12-07 15:38:04 +0000652 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000653 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000654 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700655 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200656 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100657 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900658 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100659 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000660 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100661 Support for Renesas ARM SoC platforms using a non-multiplatform
662 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
663 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000664
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665config ARCH_RPC
666 bool "RiscPC"
667 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100668 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100669 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000670 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100671 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100672 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200673 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100674 select HAVE_PATA_PLATFORM
675 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600676 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400677 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700678 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100679 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 help
681 On the Acorn Risc-PC, Linux can support the internal IDE disk and
682 CD-ROM interface, serial and parallel port, and the floppy drive.
683
684config ARCH_SA1100
685 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700687 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100688 select ARCH_SPARSEMEM_ENABLE
689 select CLKDEV_LOOKUP
690 select CLKSRC_MMIO
691 select CPU_FREQ
692 select CPU_SA1100
693 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200694 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100695 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100696 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100697 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400698 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100699 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000700 help
701 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900703config ARCH_S3C24XX
704 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900705 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100706 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100707 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200708 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800709 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900710 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900711 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900712 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100713 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900714 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600715 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900716 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900718 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
719 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
720 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
721 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900722
Ben Dooksa08ab632008-10-21 14:06:39 +0100723config ARCH_S3C64XX
724 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900725 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200726 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100727 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100728 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100729 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200730 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900731 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900732 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800733 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900734 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900735 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900736 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100737 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700738 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100739 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100740 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100741 select S3C_DEV_NAND
742 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900743 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900744 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900745 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100746 help
747 Samsung S3C64XX series based systems
748
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100749config ARCH_DAVINCI
750 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100751 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700752 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100753 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700754 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100755 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100756 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100757 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500758 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530759 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100760 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100761 help
762 Support for TI's DaVinci platform.
763
Tony Lindgrena0694862013-01-11 11:24:20 -0800764config ARCH_OMAP1
765 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600766 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100767 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800768 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100769 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200770 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100771 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100772 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800773 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800774 select HAVE_IDE
775 select IRQ_DOMAIN
776 select NEED_MACH_IO_H if PCCARD
777 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100778 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800779 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800780
Maxime Coquelin9b799b72015-05-09 09:53:54 +0200781config ARCH_STM32
782 bool "STMicrolectronics STM32"
783 depends on !MMU
784 select ARCH_HAS_RESET_CONTROLLER
785 select ARM_NVIC
786 select ARMV7M_SYSTICK
787 select AUTO_ZRELADDR
788 select CLKSRC_OF
789 select COMMON_CLK
790 select CPU_V7M
791 select GENERIC_CLOCKEVENTS
792 select NO_IOPORT_MAP
793 select RESET_CONTROLLER
794 select SPARSE_IRQ
795 select USE_OF
796 help
797 Support for STMicroelectronics STM32 processors.
798
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799endchoice
800
Rob Herring387798b2012-09-06 13:41:12 -0500801menu "Multiple platform selection"
802 depends on ARCH_MULTIPLATFORM
803
804comment "CPU Core family selection"
805
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100806config ARCH_MULTI_V4
807 bool "ARMv4 based platforms (FA526)"
808 depends on !ARCH_MULTI_V6_V7
809 select ARCH_MULTI_V4_V5
810 select CPU_FA526
811
Rob Herring387798b2012-09-06 13:41:12 -0500812config ARCH_MULTI_V4T
813 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500814 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100815 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200816 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
817 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
818 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500819
820config ARCH_MULTI_V5
821 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500822 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100823 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100824 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200825 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
826 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500827
828config ARCH_MULTI_V4_V5
829 bool
830
831config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800832 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500833 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600834 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500835
836config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800837 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500838 default y
839 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100840 select CPU_V7
Rob Herring90bc8ac72014-01-31 15:32:02 -0600841 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500842
843config ARCH_MULTI_V6_V7
844 bool
Rob Herring9352b052014-01-31 15:36:10 -0600845 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500846
847config ARCH_MULTI_CPU_AUTO
848 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
849 select ARCH_MULTI_V5
850
851endmenu
852
Rob Herring05e2a3d2013-12-05 10:04:54 -0600853config ARCH_VIRT
854 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600855 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600856 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600857 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600858 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600859
Russell Kingccf50e22010-03-15 19:03:06 +0000860#
861# This is sorted alphabetically by mach-* pathname. However, plat-*
862# Kconfigs may be included either alphabetically (according to the
863# plat- suffix) or along side the corresponding mach-* source.
864#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200865source "arch/arm/mach-mvebu/Kconfig"
866
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200867source "arch/arm/mach-alpine/Kconfig"
868
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100869source "arch/arm/mach-asm9260/Kconfig"
870
Russell King95b8f202010-01-14 11:43:54 +0000871source "arch/arm/mach-at91/Kconfig"
872
Anders Berg1d22924e2014-05-23 11:08:35 +0200873source "arch/arm/mach-axxia/Kconfig"
874
Christian Daudt8ac49e02012-11-19 09:46:10 -0800875source "arch/arm/mach-bcm/Kconfig"
876
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200877source "arch/arm/mach-berlin/Kconfig"
878
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879source "arch/arm/mach-clps711x/Kconfig"
880
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300881source "arch/arm/mach-cns3xxx/Kconfig"
882
Russell King95b8f202010-01-14 11:43:54 +0000883source "arch/arm/mach-davinci/Kconfig"
884
Baruch Siachdf8d7422015-01-14 10:40:30 +0200885source "arch/arm/mach-digicolor/Kconfig"
886
Russell King95b8f202010-01-14 11:43:54 +0000887source "arch/arm/mach-dove/Kconfig"
888
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000889source "arch/arm/mach-ep93xx/Kconfig"
890
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891source "arch/arm/mach-footbridge/Kconfig"
892
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200893source "arch/arm/mach-gemini/Kconfig"
894
Rob Herring387798b2012-09-06 13:41:12 -0500895source "arch/arm/mach-highbank/Kconfig"
896
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800897source "arch/arm/mach-hisi/Kconfig"
898
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899source "arch/arm/mach-integrator/Kconfig"
900
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100901source "arch/arm/mach-iop32x/Kconfig"
902
903source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904
Dan Williams285f5fa2006-12-07 02:59:39 +0100905source "arch/arm/mach-iop13xx/Kconfig"
906
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907source "arch/arm/mach-ixp4xx/Kconfig"
908
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400909source "arch/arm/mach-keystone/Kconfig"
910
Russell King95b8f202010-01-14 11:43:54 +0000911source "arch/arm/mach-ks8695/Kconfig"
912
Carlo Caione3b8f5032014-09-10 22:16:59 +0200913source "arch/arm/mach-meson/Kconfig"
914
Jonas Jensen17723fd32013-12-18 13:58:45 +0100915source "arch/arm/mach-moxart/Kconfig"
916
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200917source "arch/arm/mach-mv78xx0/Kconfig"
918
Shawn Guo3995eb82012-09-13 19:48:07 +0800919source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
Matthias Bruggerf682a212014-05-13 01:06:13 +0200921source "arch/arm/mach-mediatek/Kconfig"
922
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800923source "arch/arm/mach-mxs/Kconfig"
924
Russell King95b8f202010-01-14 11:43:54 +0000925source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800926
Russell King95b8f202010-01-14 11:43:54 +0000927source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000928
Daniel Tang9851ca52013-06-11 18:40:17 +1000929source "arch/arm/mach-nspire/Kconfig"
930
Tony Lindgrend48af152005-07-10 19:58:17 +0100931source "arch/arm/plat-omap/Kconfig"
932
933source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934
Tony Lindgren1dbae812005-11-10 14:26:51 +0000935source "arch/arm/mach-omap2/Kconfig"
936
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400937source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400938
Rob Herring387798b2012-09-06 13:41:12 -0500939source "arch/arm/mach-picoxcell/Kconfig"
940
Russell King95b8f202010-01-14 11:43:54 +0000941source "arch/arm/mach-pxa/Kconfig"
942source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943
Russell King95b8f202010-01-14 11:43:54 +0000944source "arch/arm/mach-mmp/Kconfig"
945
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600946source "arch/arm/mach-qcom/Kconfig"
947
Russell King95b8f202010-01-14 11:43:54 +0000948source "arch/arm/mach-realview/Kconfig"
949
Heiko Stuebnerd63dc0512013-06-02 23:09:41 +0200950source "arch/arm/mach-rockchip/Kconfig"
951
Russell King95b8f202010-01-14 11:43:54 +0000952source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300953
Rob Herring387798b2012-09-06 13:41:12 -0500954source "arch/arm/mach-socfpga/Kconfig"
955
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100956source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100957
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100958source "arch/arm/mach-sti/Kconfig"
959
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900960source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961
Ben Dooks431107e2010-01-26 10:11:04 +0900962source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100963
Kukjin Kim170f4e42010-02-24 16:40:44 +0900964source "arch/arm/mach-s5pv210/Kconfig"
965
Kukjin Kim83014572011-11-06 13:54:56 +0900966source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500967source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900968
Russell King882d01f2010-03-02 23:40:15 +0000969source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970
Maxime Ripard3b526342012-11-08 12:40:16 +0100971source "arch/arm/mach-sunxi/Kconfig"
972
Barry Song156a0992012-08-23 13:41:58 +0800973source "arch/arm/mach-prima2/Kconfig"
974
Erik Gillingc5f80062010-01-21 16:53:02 -0800975source "arch/arm/mach-tegra/Kconfig"
976
Russell King95b8f202010-01-14 11:43:54 +0000977source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978
Masahiro Yamadaba56a982015-05-08 13:07:11 +0900979source "arch/arm/mach-uniphier/Kconfig"
980
Russell King95b8f202010-01-14 11:43:54 +0000981source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982
983source "arch/arm/mach-versatile/Kconfig"
984
Russell Kingceade892010-02-11 21:44:53 +0000985source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000986source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000987
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300988source "arch/arm/mach-vt8500/Kconfig"
989
wanzongshun7ec80dd2008-12-03 03:55:38 +0100990source "arch/arm/mach-w90x900/Kconfig"
991
Jun Nieacede512015-04-28 17:18:05 +0800992source "arch/arm/mach-zx/Kconfig"
993
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600994source "arch/arm/mach-zynq/Kconfig"
995
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996# Definitions to make life easier
997config ARCH_ACORN
998 bool
999
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +01001000config PLAT_IOP
1001 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -07001002 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +01001003
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001004config PLAT_ORION
1005 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001006 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +01001007 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001008 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +02001009 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001010
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001011config PLAT_ORION_LEGACY
1012 bool
1013 select PLAT_ORION
1014
Eric Miaobd5ce432009-01-20 12:06:01 +08001015config PLAT_PXA
1016 bool
1017
Russell Kingf4b8b312010-01-14 12:48:06 +00001018config PLAT_VERSATILE
1019 bool
1020
Russell Kinge3887712010-01-14 13:30:16 +00001021config ARM_TIMER_SP804
1022 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001023 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001024 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001025
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001026source "arch/arm/firmware/Kconfig"
1027
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028source arch/arm/mm/Kconfig
1029
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001030config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001031 bool "Enable iWMMXt support"
1032 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1033 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001034 help
1035 Enable support for iWMMXt context switching at run time if
1036 running on a CPU that supports it.
1037
eric miao52108642010-12-13 09:42:34 +01001038config MULTI_IRQ_HANDLER
1039 bool
1040 help
1041 Allow each machine to specify it's own IRQ handler at run time.
1042
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001043if !MMU
1044source "arch/arm/Kconfig-nommu"
1045endif
1046
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001047config PJ4B_ERRATA_4742
1048 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1049 depends on CPU_PJ4B && MACH_ARMADA_370
1050 default y
1051 help
1052 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1053 Event (WFE) IDLE states, a specific timing sensitivity exists between
1054 the retiring WFI/WFE instructions and the newly issued subsequent
1055 instructions. This sensitivity can result in a CPU hang scenario.
1056 Workaround:
1057 The software must insert either a Data Synchronization Barrier (DSB)
1058 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1059 instruction
1060
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001061config ARM_ERRATA_326103
1062 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1063 depends on CPU_V6
1064 help
1065 Executing a SWP instruction to read-only memory does not set bit 11
1066 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1067 treat the access as a read, preventing a COW from occurring and
1068 causing the faulting task to livelock.
1069
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001070config ARM_ERRATA_411920
1071 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001072 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001073 help
1074 Invalidation of the Instruction Cache operation can
1075 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1076 It does not affect the MPCore. This option enables the ARM Ltd.
1077 recommended workaround.
1078
Catalin Marinas7ce236fc2009-04-30 17:06:09 +01001079config ARM_ERRATA_430973
1080 bool "ARM errata: Stale prediction on replaced interworking branch"
1081 depends on CPU_V7
1082 help
1083 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001084 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236fc2009-04-30 17:06:09 +01001085 interworking branch is replaced with another code sequence at the
1086 same virtual address, whether due to self-modifying code or virtual
1087 to physical address re-mapping, Cortex-A8 does not recover from the
1088 stale interworking branch prediction. This results in Cortex-A8
1089 executing the new code sequence in the incorrect ARM or Thumb state.
1090 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1091 and also flushes the branch target cache at every context switch.
1092 Note that setting specific bits in the ACTLR register may not be
1093 available in non-secure mode.
1094
Catalin Marinas855c5512009-04-30 17:06:15 +01001095config ARM_ERRATA_458693
1096 bool "ARM errata: Processor deadlock when a false hazard is created"
1097 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001098 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001099 help
1100 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1101 erratum. For very specific sequences of memory operations, it is
1102 possible for a hazard condition intended for a cache line to instead
1103 be incorrectly associated with a different cache line. This false
1104 hazard might then cause a processor deadlock. The workaround enables
1105 the L1 caching of the NEON accesses and disables the PLD instruction
1106 in the ACTLR register. Note that setting specific bits in the ACTLR
1107 register may not be available in non-secure mode.
1108
Catalin Marinas0516e462009-04-30 17:06:20 +01001109config ARM_ERRATA_460075
1110 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1111 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001112 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001113 help
1114 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1115 erratum. Any asynchronous access to the L2 cache may encounter a
1116 situation in which recent store transactions to the L2 cache are lost
1117 and overwritten with stale memory contents from external memory. The
1118 workaround disables the write-allocate mode for the L2 cache via the
1119 ACTLR register. Note that setting specific bits in the ACTLR register
1120 may not be available in non-secure mode.
1121
Will Deacon9f050272010-09-14 09:51:43 +01001122config ARM_ERRATA_742230
1123 bool "ARM errata: DMB operation may be faulty"
1124 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001125 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001126 help
1127 This option enables the workaround for the 742230 Cortex-A9
1128 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1129 between two write operations may not ensure the correct visibility
1130 ordering of the two writes. This workaround sets a specific bit in
1131 the diagnostic register of the Cortex-A9 which causes the DMB
1132 instruction to behave as a DSB, ensuring the correct behaviour of
1133 the two writes.
1134
Will Deacona672e992010-09-14 09:53:02 +01001135config ARM_ERRATA_742231
1136 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1137 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001138 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001139 help
1140 This option enables the workaround for the 742231 Cortex-A9
1141 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1142 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1143 accessing some data located in the same cache line, may get corrupted
1144 data due to bad handling of the address hazard when the line gets
1145 replaced from one of the CPUs at the same time as another CPU is
1146 accessing it. This workaround sets specific bits in the diagnostic
1147 register of the Cortex-A9 which reduces the linefill issuing
1148 capabilities of the processor.
1149
Jon Medhurst69155792013-06-07 10:35:35 +01001150config ARM_ERRATA_643719
1151 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1152 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001153 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001154 help
1155 This option enables the workaround for the 643719 Cortex-A9 (prior to
1156 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1157 register returns zero when it should return one. The workaround
1158 corrects this value, ensuring cache maintenance operations which use
1159 it behave as intended and avoiding data corruption.
1160
Will Deaconcdf357f2010-08-05 11:20:51 +01001161config ARM_ERRATA_720789
1162 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001163 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001164 help
1165 This option enables the workaround for the 720789 Cortex-A9 (prior to
1166 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1167 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1168 As a consequence of this erratum, some TLB entries which should be
1169 invalidated are not, resulting in an incoherency in the system page
1170 tables. The workaround changes the TLB flushing routines to invalidate
1171 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001172
1173config ARM_ERRATA_743622
1174 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1175 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001176 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001177 help
1178 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001179 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001180 optimisation in the Cortex-A9 Store Buffer may lead to data
1181 corruption. This workaround sets a specific bit in the diagnostic
1182 register of the Cortex-A9 which disables the Store Buffer
1183 optimisation, preventing the defect from occurring. This has no
1184 visible impact on the overall performance or power consumption of the
1185 processor.
1186
Will Deacon9a27c272011-02-18 16:36:35 +01001187config ARM_ERRATA_751472
1188 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001189 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001190 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001191 help
1192 This option enables the workaround for the 751472 Cortex-A9 (prior
1193 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1194 completion of a following broadcasted operation if the second
1195 operation is received by a CPU before the ICIALLUIS has completed,
1196 potentially leading to corrupted entries in the cache or TLB.
1197
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001198config ARM_ERRATA_754322
1199 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1200 depends on CPU_V7
1201 help
1202 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1203 r3p*) erratum. A speculative memory access may cause a page table walk
1204 which starts prior to an ASID switch but completes afterwards. This
1205 can populate the micro-TLB with a stale entry which may be hit with
1206 the new ASID. This workaround places two dsb instructions in the mm
1207 switching code so that no page table walks can cross the ASID switch.
1208
Will Deacon5dab26a2011-03-04 12:38:54 +01001209config ARM_ERRATA_754327
1210 bool "ARM errata: no automatic Store Buffer drain"
1211 depends on CPU_V7 && SMP
1212 help
1213 This option enables the workaround for the 754327 Cortex-A9 (prior to
1214 r2p0) erratum. The Store Buffer does not have any automatic draining
1215 mechanism and therefore a livelock may occur if an external agent
1216 continuously polls a memory location waiting to observe an update.
1217 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1218 written polling loops from denying visibility of updates to memory.
1219
Catalin Marinas145e10e2011-08-15 11:04:41 +01001220config ARM_ERRATA_364296
1221 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001222 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001223 help
1224 This options enables the workaround for the 364296 ARM1136
1225 r0p2 erratum (possible cache data corruption with
1226 hit-under-miss enabled). It sets the undocumented bit 31 in
1227 the auxiliary control register and the FI bit in the control
1228 register, thus disabling hit-under-miss without putting the
1229 processor into full low interrupt latency mode. ARM11MPCore
1230 is not affected.
1231
Will Deaconf630c1b2011-09-15 11:45:15 +01001232config ARM_ERRATA_764369
1233 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1234 depends on CPU_V7 && SMP
1235 help
1236 This option enables the workaround for erratum 764369
1237 affecting Cortex-A9 MPCore with two or more processors (all
1238 current revisions). Under certain timing circumstances, a data
1239 cache line maintenance operation by MVA targeting an Inner
1240 Shareable memory region may fail to proceed up to either the
1241 Point of Coherency or to the Point of Unification of the
1242 system. This workaround adds a DSB instruction before the
1243 relevant cache maintenance functions and sets a specific bit
1244 in the diagnostic control register of the SCU.
1245
Simon Horman7253b852012-09-28 02:12:45 +01001246config ARM_ERRATA_775420
1247 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1248 depends on CPU_V7
1249 help
1250 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1251 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1252 operation aborts with MMU exception, it might cause the processor
1253 to deadlock. This workaround puts DSB before executing ISB if
1254 an abort may occur on cache maintenance.
1255
Catalin Marinas93dc6882013-03-26 23:35:04 +01001256config ARM_ERRATA_798181
1257 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1258 depends on CPU_V7 && SMP
1259 help
1260 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1261 adequately shooting down all use of the old entries. This
1262 option enables the Linux kernel workaround for this erratum
1263 which sends an IPI to the CPUs that are running the same ASID
1264 as the one being invalidated.
1265
Will Deacon84b65042013-08-20 17:29:55 +01001266config ARM_ERRATA_773022
1267 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1268 depends on CPU_V7
1269 help
1270 This option enables the workaround for the 773022 Cortex-A15
1271 (up to r0p4) erratum. In certain rare sequences of code, the
1272 loop buffer may deliver incorrect instructions. This
1273 workaround disables the loop buffer to avoid the erratum.
1274
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275endmenu
1276
1277source "arch/arm/common/Kconfig"
1278
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279menu "Bus support"
1280
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281config ISA
1282 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283 help
1284 Find out whether you have ISA slots on your motherboard. ISA is the
1285 name of a bus system, i.e. the way the CPU talks to the other stuff
1286 inside your box. Other bus systems are PCI, EISA, MicroChannel
1287 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1288 newer boards don't support it. If you have ISA, say Y, otherwise N.
1289
Russell King065909b2006-01-04 15:44:16 +00001290# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291config ISA_DMA
1292 bool
Russell King065909b2006-01-04 15:44:16 +00001293 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294
Russell King065909b2006-01-04 15:44:16 +00001295# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001296config ISA_DMA_API
1297 bool
Al Viro5cae8412005-05-04 05:39:22 +01001298
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001300 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301 help
1302 Find out whether you have a PCI motherboard. PCI is the name of a
1303 bus system, i.e. the way the CPU talks to the other stuff inside
1304 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1305 VESA. If you have PCI, say Y, otherwise N.
1306
Anton Vorontsov52882172010-04-19 13:20:49 +01001307config PCI_DOMAINS
1308 bool
1309 depends on PCI
1310
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001311config PCI_DOMAINS_GENERIC
1312 def_bool PCI_DOMAINS
1313
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001314config PCI_NANOENGINE
1315 bool "BSE nanoEngine PCI support"
1316 depends on SA1100_NANOENGINE
1317 help
1318 Enable PCI on the BSE nanoEngine board.
1319
Matthew Wilcox36e23592007-07-10 10:54:40 -06001320config PCI_SYSCALL
1321 def_bool PCI
1322
Mike Rapoporta0113a92007-11-25 08:55:34 +01001323config PCI_HOST_ITE8152
1324 bool
1325 depends on PCI && MACH_ARMCORE
1326 default y
1327 select DMABOUNCE
1328
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001330source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331
1332source "drivers/pcmcia/Kconfig"
1333
1334endmenu
1335
1336menu "Kernel Features"
1337
Dave Martin3b556582011-12-07 15:38:04 +00001338config HAVE_SMP
1339 bool
1340 help
1341 This option should be selected by machines which have an SMP-
1342 capable CPU.
1343
1344 The only effect of this option is to make the SMP-related
1345 options available to the user for configuration.
1346
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001348 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001349 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001350 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001351 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001352 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353 help
1354 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001355 a system with only one CPU, say N. If you have a system with more
1356 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357
Robert Graffham4a474152014-01-23 15:55:29 -08001358 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001360 you say Y here, the kernel will run on many, but not all,
1361 uniprocessor machines. On a uniprocessor machine, the kernel
1362 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363
Paul Bolle395cf962011-08-15 02:02:26 +02001364 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001366 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367
1368 If you don't know what to do here, say N.
1369
Russell Kingf00ec482010-09-04 10:47:48 +01001370config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001371 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001372 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001373 default y
1374 help
1375 SMP kernels contain instructions which fail on non-SMP processors.
1376 Enabling this option allows the kernel to modify itself to make
1377 these instructions safe. Disabling it allows about 1K of space
1378 savings.
1379
1380 If you don't know what to do here, say Y.
1381
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001382config ARM_CPU_TOPOLOGY
1383 bool "Support cpu topology definition"
1384 depends on SMP && CPU_V7
1385 default y
1386 help
1387 Support ARM cpu topology definition. The MPIDR register defines
1388 affinity between processors which is then used to describe the cpu
1389 topology of an ARM System.
1390
1391config SCHED_MC
1392 bool "Multi-core scheduler support"
1393 depends on ARM_CPU_TOPOLOGY
1394 help
1395 Multi-core scheduler support improves the CPU scheduler's decision
1396 making when dealing with multi-core CPU chips at a cost of slightly
1397 increased overhead in some places. If unsure say N here.
1398
1399config SCHED_SMT
1400 bool "SMT scheduler support"
1401 depends on ARM_CPU_TOPOLOGY
1402 help
1403 Improves the CPU scheduler's decision making when dealing with
1404 MultiThreading at a cost of slightly increased overhead in some
1405 places. If unsure say N here.
1406
Russell Kinga8cbcd92009-05-16 11:51:14 +01001407config HAVE_ARM_SCU
1408 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001409 help
1410 This option enables support for the ARM system coherency unit
1411
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001412config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001413 bool "Architected timer support"
1414 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001415 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001416 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001417 help
1418 This option enables support for the ARM architected timer
1419
Russell Kingf32f4ce2009-05-16 12:14:21 +01001420config HAVE_ARM_TWD
1421 bool
1422 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001423 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001424 help
1425 This options enables support for the ARM timer and watchdog unit
1426
Nicolas Pitree8db2882012-04-12 02:45:22 -04001427config MCPM
1428 bool "Multi-Cluster Power Management"
1429 depends on CPU_V7 && SMP
1430 help
1431 This option provides the common power management infrastructure
1432 for (multi-)cluster based systems, such as big.LITTLE based
1433 systems.
1434
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001435config MCPM_QUAD_CLUSTER
1436 bool
1437 depends on MCPM
1438 help
1439 To avoid wasting resources unnecessarily, MCPM only supports up
1440 to 2 clusters by default.
1441 Platforms with 3 or 4 clusters that use MCPM must select this
1442 option to allow the additional clusters to be managed.
1443
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001444config BIG_LITTLE
1445 bool "big.LITTLE support (Experimental)"
1446 depends on CPU_V7 && SMP
1447 select MCPM
1448 help
1449 This option enables support selections for the big.LITTLE
1450 system architecture.
1451
1452config BL_SWITCHER
1453 bool "big.LITTLE switcher support"
1454 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001455 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001456 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001457 help
1458 The big.LITTLE "switcher" provides the core functionality to
1459 transparently handle transition between a cluster of A15's
1460 and a cluster of A7's in a big.LITTLE system.
1461
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001462config BL_SWITCHER_DUMMY_IF
1463 tristate "Simple big.LITTLE switcher user interface"
1464 depends on BL_SWITCHER && DEBUG_KERNEL
1465 help
1466 This is a simple and dummy char dev interface to control
1467 the big.LITTLE switcher core code. It is meant for
1468 debugging purposes only.
1469
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001470choice
1471 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001472 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001473 default VMSPLIT_3G
1474 help
1475 Select the desired split between kernel and user memory.
1476
1477 If you are not absolutely sure what you are doing, leave this
1478 option alone!
1479
1480 config VMSPLIT_3G
1481 bool "3G/1G user/kernel split"
1482 config VMSPLIT_2G
1483 bool "2G/2G user/kernel split"
1484 config VMSPLIT_1G
1485 bool "1G/3G user/kernel split"
1486endchoice
1487
1488config PAGE_OFFSET
1489 hex
Russell King006fa252014-02-26 19:40:46 +00001490 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001491 default 0x40000000 if VMSPLIT_1G
1492 default 0x80000000 if VMSPLIT_2G
1493 default 0xC0000000
1494
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495config NR_CPUS
1496 int "Maximum number of CPUs (2-32)"
1497 range 2 32
1498 depends on SMP
1499 default "4"
1500
Russell Kinga054a812005-11-02 22:24:33 +00001501config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001502 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001503 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001504 help
1505 Say Y here to experiment with turning CPUs off and on. CPUs
1506 can be controlled through /sys/devices/system/cpu.
1507
Will Deacon2bdd4242012-12-12 19:20:52 +00001508config ARM_PSCI
1509 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1510 depends on CPU_V7
1511 help
1512 Say Y here if you want Linux to communicate with system firmware
1513 implementing the PSCI specification for CPU-centric power
1514 management operations described in ARM document number ARM DEN
1515 0022A ("Power State Coordination Interface System Software on
1516 ARM processors").
1517
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001518# The GPIO number here must be sorted by descending number. In case of
1519# a multiplatform kernel, we just want the highest value required by the
1520# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001521config ARCH_NR_GPIO
1522 int
Michal Simek6a4d8f32015-01-15 08:42:42 +01001523 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001524 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1525 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001526 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001527 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001528 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001529 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001530 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001531 default 0
1532 help
1533 Maximum number of GPIOs in the system.
1534
1535 If unsure, leave the default value.
1536
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001537source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538
Russell Kingc9218b12013-04-27 23:31:10 +01001539config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001540 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001541 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001542 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001543 default 128 if SOC_AT91RM9200
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001544 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001545 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001546
1547choice
Russell King47d84682013-09-10 23:47:55 +01001548 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001549 prompt "Timer frequency"
1550
1551config HZ_100
1552 bool "100 Hz"
1553
1554config HZ_200
1555 bool "200 Hz"
1556
1557config HZ_250
1558 bool "250 Hz"
1559
1560config HZ_300
1561 bool "300 Hz"
1562
1563config HZ_500
1564 bool "500 Hz"
1565
1566config HZ_1000
1567 bool "1000 Hz"
1568
1569endchoice
1570
1571config HZ
1572 int
Russell King47d84682013-09-10 23:47:55 +01001573 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001574 default 100 if HZ_100
1575 default 200 if HZ_200
1576 default 250 if HZ_250
1577 default 300 if HZ_300
1578 default 500 if HZ_500
1579 default 1000
1580
1581config SCHED_HRTICK
1582 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001583
Catalin Marinas16c79652009-07-24 12:33:02 +01001584config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001585 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001586 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001587 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001588 select AEABI
1589 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001590 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001591 help
1592 By enabling this option, the kernel will be compiled in
1593 Thumb-2 mode. A compiler/assembler that understand the unified
1594 ARM-Thumb syntax is needed.
1595
1596 If unsure, say N.
1597
Dave Martin6f685c52011-03-03 11:41:12 +01001598config THUMB2_AVOID_R_ARM_THM_JUMP11
1599 bool "Work around buggy Thumb-2 short branch relocations in gas"
1600 depends on THUMB2_KERNEL && MODULES
1601 default y
1602 help
1603 Various binutils versions can resolve Thumb-2 branches to
1604 locally-defined, preemptible global symbols as short-range "b.n"
1605 branch instructions.
1606
1607 This is a problem, because there's no guarantee the final
1608 destination of the symbol, or any candidate locations for a
1609 trampoline, are within range of the branch. For this reason, the
1610 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1611 relocation in modules at all, and it makes little sense to add
1612 support.
1613
1614 The symptom is that the kernel fails with an "unsupported
1615 relocation" error when loading some modules.
1616
1617 Until fixed tools are available, passing
1618 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1619 code which hits this problem, at the cost of a bit of extra runtime
1620 stack usage in some cases.
1621
1622 The problem is described in more detail at:
1623 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1624
1625 Only Thumb-2 kernels are affected.
1626
1627 Unless you are sure your tools don't have this problem, say Y.
1628
Catalin Marinas0becb082009-07-24 12:32:53 +01001629config ARM_ASM_UNIFIED
1630 bool
1631
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001632config AEABI
1633 bool "Use the ARM EABI to compile the kernel"
1634 help
1635 This option allows for the kernel to be compiled using the latest
1636 ARM ABI (aka EABI). This is only useful if you are using a user
1637 space environment that is also compiled with EABI.
1638
1639 Since there are major incompatibilities between the legacy ABI and
1640 EABI, especially with regard to structure member alignment, this
1641 option also changes the kernel syscall calling convention to
1642 disambiguate both ABIs and allow for backward compatibility support
1643 (selected with CONFIG_OABI_COMPAT).
1644
1645 To use this you need GCC version 4.0.0 or later.
1646
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001647config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001648 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001649 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001650 help
1651 This option preserves the old syscall interface along with the
1652 new (ARM EABI) one. It also provides a compatibility layer to
1653 intercept syscalls that have structure arguments which layout
1654 in memory differs between the legacy ABI and the new ARM EABI
1655 (only for non "thumb" binaries). This option adds a tiny
1656 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001657
1658 The seccomp filter system will not be available when this is
1659 selected, since there is no way yet to sensibly distinguish
1660 between calling conventions during filtering.
1661
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001662 If you know you'll be using only pure EABI user space then you
1663 can say N here. If this option is not selected and you attempt
1664 to execute a legacy ABI binary then the result will be
1665 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001666 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001667
Mel Gormaneb335752009-05-13 17:34:48 +01001668config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001669 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001670
Russell King05944d72006-11-30 20:43:51 +00001671config ARCH_SPARSEMEM_ENABLE
1672 bool
1673
Russell King07a2f732008-10-01 21:39:58 +01001674config ARCH_SPARSEMEM_DEFAULT
1675 def_bool ARCH_SPARSEMEM_ENABLE
1676
Russell King05944d72006-11-30 20:43:51 +00001677config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001678 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001679
Will Deacon7b7bf492011-05-19 13:21:14 +01001680config HAVE_ARCH_PFN_VALID
1681 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1682
Steve Capperb8cd51a2014-10-09 15:29:20 -07001683config HAVE_GENERIC_RCU_GUP
1684 def_bool y
1685 depends on ARM_LPAE
1686
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001687config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001688 bool "High Memory Support"
1689 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001690 help
1691 The address space of ARM processors is only 4 Gigabytes large
1692 and it has to accommodate user address space, kernel address
1693 space as well as some memory mapped IO. That means that, if you
1694 have a large amount of physical memory and/or IO, not all of the
1695 memory can be "permanently mapped" by the kernel. The physical
1696 memory that is not permanently mapped is called "high memory".
1697
1698 Depending on the selected kernel/user memory split, minimum
1699 vmalloc space and actual amount of RAM, you may not need this
1700 option which should result in a slightly faster kernel.
1701
1702 If unsure, say n.
1703
Russell King65cec8e2009-08-17 20:02:06 +01001704config HIGHPTE
1705 bool "Allocate 2nd-level pagetables from highmem"
1706 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001707
Jamie Iles1b8873a2010-02-02 20:25:44 +01001708config HW_PERF_EVENTS
1709 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001710 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001711 default y
1712 help
1713 Enable hardware performance counter support for perf events. If
1714 disabled, perf events will use software events only.
1715
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001716config SYS_SUPPORTS_HUGETLBFS
1717 def_bool y
1718 depends on ARM_LPAE
1719
Catalin Marinas8d962502012-07-25 14:39:26 +01001720config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1721 def_bool y
1722 depends on ARM_LPAE
1723
Steven Capper4bfab202013-07-26 14:58:22 +01001724config ARCH_WANT_GENERAL_HUGETLB
1725 def_bool y
1726
Dave Hansen3f22ab22005-06-23 00:07:43 -07001727source "mm/Kconfig"
1728
Magnus Dammc1b2d972010-07-05 10:00:11 +01001729config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001730 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1731 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001732 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001733 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001734 default "11"
1735 help
1736 The kernel memory allocator divides physically contiguous memory
1737 blocks into "zones", where each zone is a power of two number of
1738 pages. This option selects the largest power of two that the kernel
1739 keeps in the memory allocator. If you need to allocate very large
1740 blocks of physically contiguous memory, then you may need to
1741 increase this value.
1742
1743 This config option is actually maximum order plus one. For example,
1744 a value of 11 means that the largest free memory block is 2^10 pages.
1745
Linus Torvalds1da177e2005-04-16 15:20:36 -07001746config ALIGNMENT_TRAP
1747 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001748 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001749 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001750 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001751 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001752 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1754 address divisible by 4. On 32-bit ARM processors, these non-aligned
1755 fetch/store instructions will be emulated in software if you say
1756 here, which has a severe performance impact. This is necessary for
1757 correct operation of some network protocols. With an IP-only
1758 configuration it is safe to say N, otherwise say Y.
1759
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001760config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001761 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1762 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001763 default y if CPU_FEROCEON
1764 help
1765 Implement faster copy_to_user and clear_user methods for CPU
1766 cores where a 8-word STM instruction give significantly higher
1767 memory write throughput than a sequence of individual 32bit stores.
1768
1769 A possible side effect is a slight increase in scheduling latency
1770 between threads sharing the same address space if they invoke
1771 such copy operations with large buffers.
1772
1773 However, if the CPU data cache is using a write-allocate mode,
1774 this option is unlikely to provide any performance gain.
1775
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001776config SECCOMP
1777 bool
1778 prompt "Enable seccomp to safely compute untrusted bytecode"
1779 ---help---
1780 This kernel feature is useful for number crunching applications
1781 that may need to compute untrusted bytecode during their
1782 execution. By using pipes or other transports made available to
1783 the process as file descriptors supporting the read/write
1784 syscalls, it's possible to isolate those applications in
1785 their own address space using seccomp. Once seccomp is
1786 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1787 and the task is only allowed to execute a few safe syscalls
1788 defined by each seccomp mode.
1789
Stefano Stabellini06e62952013-10-15 15:47:14 +00001790config SWIOTLB
1791 def_bool y
1792
1793config IOMMU_HELPER
1794 def_bool SWIOTLB
1795
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001796config XEN_DOM0
1797 def_bool y
1798 depends on XEN
1799
1800config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001801 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001802 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001803 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001804 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001805 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001806 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001807 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001808 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001809 help
1810 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1811
Linus Torvalds1da177e2005-04-16 15:20:36 -07001812endmenu
1813
1814menu "Boot options"
1815
Grant Likely9eb8f672011-04-28 14:27:20 -06001816config USE_OF
1817 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001818 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001819 select OF
1820 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001821 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001822 help
1823 Include support for flattened device tree machine descriptions.
1824
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001825config ATAGS
1826 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1827 default y
1828 help
1829 This is the traditional way of passing data to the kernel at boot
1830 time. If you are solely relying on the flattened device tree (or
1831 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1832 to remove ATAGS support from your kernel binary. If unsure,
1833 leave this to y.
1834
1835config DEPRECATED_PARAM_STRUCT
1836 bool "Provide old way to pass kernel parameters"
1837 depends on ATAGS
1838 help
1839 This was deprecated in 2001 and announced to live on for 5 years.
1840 Some old boot loaders still use this way.
1841
Linus Torvalds1da177e2005-04-16 15:20:36 -07001842# Compressed boot loader in ROM. Yes, we really want to ask about
1843# TEXT and BSS so we preserve their values in the config files.
1844config ZBOOT_ROM_TEXT
1845 hex "Compressed ROM boot loader base address"
1846 default "0"
1847 help
1848 The physical address at which the ROM-able zImage is to be
1849 placed in the target. Platforms which normally make use of
1850 ROM-able zImage formats normally set this to a suitable
1851 value in their defconfig file.
1852
1853 If ZBOOT_ROM is not enabled, this has no effect.
1854
1855config ZBOOT_ROM_BSS
1856 hex "Compressed ROM boot loader BSS address"
1857 default "0"
1858 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001859 The base address of an area of read/write memory in the target
1860 for the ROM-able zImage which must be available while the
1861 decompressor is running. It must be large enough to hold the
1862 entire decompressed kernel plus an additional 128 KiB.
1863 Platforms which normally make use of ROM-able zImage formats
1864 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865
1866 If ZBOOT_ROM is not enabled, this has no effect.
1867
1868config ZBOOT_ROM
1869 bool "Compressed boot loader in ROM/flash"
1870 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001871 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001872 help
1873 Say Y here if you intend to execute your compressed kernel image
1874 (zImage) directly from ROM or flash. If unsure, say N.
1875
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001876config ARM_APPENDED_DTB
1877 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001878 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001879 help
1880 With this option, the boot code will look for a device tree binary
1881 (DTB) appended to zImage
1882 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1883
1884 This is meant as a backward compatibility convenience for those
1885 systems with a bootloader that can't be upgraded to accommodate
1886 the documented boot protocol using a device tree.
1887
1888 Beware that there is very little in terms of protection against
1889 this option being confused by leftover garbage in memory that might
1890 look like a DTB header after a reboot if no actual DTB is appended
1891 to zImage. Do not leave this option active in a production kernel
1892 if you don't intend to always append a DTB. Proper passing of the
1893 location into r2 of a bootloader provided DTB is always preferable
1894 to this option.
1895
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001896config ARM_ATAG_DTB_COMPAT
1897 bool "Supplement the appended DTB with traditional ATAG information"
1898 depends on ARM_APPENDED_DTB
1899 help
1900 Some old bootloaders can't be updated to a DTB capable one, yet
1901 they provide ATAGs with memory configuration, the ramdisk address,
1902 the kernel cmdline string, etc. Such information is dynamically
1903 provided by the bootloader and can't always be stored in a static
1904 DTB. To allow a device tree enabled kernel to be used with such
1905 bootloaders, this option allows zImage to extract the information
1906 from the ATAG list and store it at run time into the appended DTB.
1907
Genoud Richardd0f34a12012-06-26 16:37:59 +01001908choice
1909 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1910 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1911
1912config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1913 bool "Use bootloader kernel arguments if available"
1914 help
1915 Uses the command-line options passed by the boot loader instead of
1916 the device tree bootargs property. If the boot loader doesn't provide
1917 any, the device tree bootargs property will be used.
1918
1919config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1920 bool "Extend with bootloader kernel arguments"
1921 help
1922 The command-line arguments provided by the boot loader will be
1923 appended to the the device tree bootargs property.
1924
1925endchoice
1926
Linus Torvalds1da177e2005-04-16 15:20:36 -07001927config CMDLINE
1928 string "Default kernel command string"
1929 default ""
1930 help
1931 On some architectures (EBSA110 and CATS), there is currently no way
1932 for the boot loader to pass arguments to the kernel. For these
1933 architectures, you should supply some command-line options at build
1934 time by entering them here. As a minimum, you should specify the
1935 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1936
Victor Boivie4394c122011-05-04 17:07:55 +01001937choice
1938 prompt "Kernel command line type" if CMDLINE != ""
1939 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001940 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001941
1942config CMDLINE_FROM_BOOTLOADER
1943 bool "Use bootloader kernel arguments if available"
1944 help
1945 Uses the command-line options passed by the boot loader. If
1946 the boot loader doesn't provide any, the default kernel command
1947 string provided in CMDLINE will be used.
1948
1949config CMDLINE_EXTEND
1950 bool "Extend bootloader kernel arguments"
1951 help
1952 The command-line arguments provided by the boot loader will be
1953 appended to the default kernel command string.
1954
Alexander Holler92d20402010-02-16 19:04:53 +01001955config CMDLINE_FORCE
1956 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001957 help
1958 Always use the default kernel command string, even if the boot
1959 loader passes other arguments to the kernel.
1960 This is useful if you cannot or don't want to change the
1961 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001962endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001963
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964config XIP_KERNEL
1965 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001966 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967 help
1968 Execute-In-Place allows the kernel to run from non-volatile storage
1969 directly addressable by the CPU, such as NOR flash. This saves RAM
1970 space since the text section of the kernel is not loaded from flash
1971 to RAM. Read-write sections, such as the data section and stack,
1972 are still copied to RAM. The XIP kernel is not compressed since
1973 it has to run directly from flash, so it will take more space to
1974 store it. The flash address used to link the kernel object files,
1975 and for storing it, is configuration dependent. Therefore, if you
1976 say Y here, you must know the proper physical address where to
1977 store the kernel image depending on your own flash memory usage.
1978
1979 Also note that the make target becomes "make xipImage" rather than
1980 "make zImage" or "make Image". The final kernel binary to put in
1981 ROM memory will be arch/arm/boot/xipImage.
1982
1983 If unsure, say N.
1984
1985config XIP_PHYS_ADDR
1986 hex "XIP Kernel Physical Location"
1987 depends on XIP_KERNEL
1988 default "0x00080000"
1989 help
1990 This is the physical address in your flash memory the kernel will
1991 be linked for and stored to. This address is dependent on your
1992 own flash usage.
1993
Richard Purdiec587e4a2007-02-06 21:29:00 +01001994config KEXEC
1995 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001996 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001997 help
1998 kexec is a system call that implements the ability to shutdown your
1999 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002000 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002001 you can start any kernel with it, not just Linux.
2002
2003 It is an ongoing process to be certain the hardware in a machine
2004 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002005 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002006
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002007config ATAGS_PROC
2008 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002009 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002010 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002011 help
2012 Should the atags used to boot the kernel be exported in an "atags"
2013 file in procfs. Useful with kexec.
2014
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002015config CRASH_DUMP
2016 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002017 help
2018 Generate crash dump after being started by kexec. This should
2019 be normally only set in special crash dump kernels which are
2020 loaded in the main kernel with kexec-tools into a specially
2021 reserved region and then later executed after a crash by
2022 kdump/kexec. The crash dump kernel must be compiled to a
2023 memory address not used by the main kernel
2024
2025 For more details see Documentation/kdump/kdump.txt
2026
Eric Miaoe69edc792010-07-05 15:56:50 +02002027config AUTO_ZRELADDR
2028 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002029 help
2030 ZRELADDR is the physical address where the decompressed kernel
2031 image will be placed. If AUTO_ZRELADDR is selected, the address
2032 will be determined at run-time by masking the current IP with
2033 0xf8000000. This assumes the zImage being placed in the first 128MB
2034 from start of memory.
2035
Linus Torvalds1da177e2005-04-16 15:20:36 -07002036endmenu
2037
Russell Kingac9d7ef2008-08-18 17:26:00 +01002038menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039
Linus Torvalds1da177e2005-04-16 15:20:36 -07002040source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041
Russell Kingac9d7ef2008-08-18 17:26:00 +01002042source "drivers/cpuidle/Kconfig"
2043
2044endmenu
2045
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046menu "Floating point emulation"
2047
2048comment "At least one emulation must be selected"
2049
2050config FPE_NWFPE
2051 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002052 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053 ---help---
2054 Say Y to include the NWFPE floating point emulator in the kernel.
2055 This is necessary to run most binaries. Linux does not currently
2056 support floating point hardware so you need to say Y here even if
2057 your machine has an FPA or floating point co-processor podule.
2058
2059 You may say N here if you are going to load the Acorn FPEmulator
2060 early in the bootup.
2061
2062config FPE_NWFPE_XP
2063 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002064 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065 help
2066 Say Y to include 80-bit support in the kernel floating-point
2067 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2068 Note that gcc does not generate 80-bit operations by default,
2069 so in most cases this option only enlarges the size of the
2070 floating point emulator without any good reason.
2071
2072 You almost surely want to say N here.
2073
2074config FPE_FASTFPE
2075 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002076 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 ---help---
2078 Say Y here to include the FAST floating point emulator in the kernel.
2079 This is an experimental much faster emulator which now also has full
2080 precision for the mantissa. It does not support any exceptions.
2081 It is very simple, and approximately 3-6 times faster than NWFPE.
2082
2083 It should be sufficient for most programs. It may be not suitable
2084 for scientific calculations, but you have to check this for yourself.
2085 If you do not feel you need a faster FP emulation you should better
2086 choose NWFPE.
2087
2088config VFP
2089 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002090 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091 help
2092 Say Y to include VFP support code in the kernel. This is needed
2093 if your hardware includes a VFP unit.
2094
2095 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2096 release notes and additional status information.
2097
2098 Say N if your target does not have VFP hardware.
2099
Catalin Marinas25ebee02007-09-25 15:22:24 +01002100config VFPv3
2101 bool
2102 depends on VFP
2103 default y if CPU_V7
2104
Catalin Marinasb5872db2008-01-10 19:16:17 +01002105config NEON
2106 bool "Advanced SIMD (NEON) Extension support"
2107 depends on VFPv3 && CPU_V7
2108 help
2109 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2110 Extension.
2111
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002112config KERNEL_MODE_NEON
2113 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002114 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002115 help
2116 Say Y to include support for NEON in kernel mode.
2117
Linus Torvalds1da177e2005-04-16 15:20:36 -07002118endmenu
2119
2120menu "Userspace binary formats"
2121
2122source "fs/Kconfig.binfmt"
2123
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124endmenu
2125
2126menu "Power management options"
2127
Russell Kingeceab4a2005-11-15 11:31:41 +00002128source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002129
Johannes Bergf4cb5702007-12-08 02:14:00 +01002130config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002131 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002132 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002133 def_bool y
2134
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002135config ARM_CPU_SUSPEND
2136 def_bool PM_SLEEP
2137
Sebastian Capella603fb422014-03-25 01:20:29 +01002138config ARCH_HIBERNATION_POSSIBLE
2139 bool
2140 depends on MMU
2141 default y if ARCH_SUSPEND_POSSIBLE
2142
Linus Torvalds1da177e2005-04-16 15:20:36 -07002143endmenu
2144
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002145source "net/Kconfig"
2146
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002147source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002148
Kumar Gala916f743d2015-02-26 15:49:09 -06002149source "drivers/firmware/Kconfig"
2150
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151source "fs/Kconfig"
2152
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153source "arch/arm/Kconfig.debug"
2154
2155source "security/Kconfig"
2156
2157source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002158if CRYPTO
2159source "arch/arm/crypto/Kconfig"
2160endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161
2162source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002163
2164source "arch/arm/kvm/Kconfig"