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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Russell Kingb1b3f492012-10-06 17:12:25 +01004 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
Catalin Marinas74634492012-07-30 14:41:09 -07005 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
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
Mark Salterd7018842013-10-07 22:07:58 -04008 select ARCH_MIGHT_HAVE_PC_PARPORT
Peter Zijlstra4badad32014-06-06 19:53:16 +02009 select ARCH_SUPPORTS_ATOMIC_RMW
Kim Phillips017f1612013-11-06 05:15:24 +010010 select ARCH_USE_BUILTIN_BSWAP
Will Deacon0cbad9c2013-10-09 17:19:22 +010011 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010012 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010013 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010014 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010015 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacondce5c9e2013-12-17 19:50:16 +010016 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
Laura Abbott36d0fd22014-10-09 15:26:42 -070017 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010018 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010019 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010020 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010021 select GENERIC_IRQ_PROBE
22 select GENERIC_IRQ_SHOW
Russell Kingb1b3f492012-10-06 17:12:25 +010023 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070024 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010025 select GENERIC_SMP_IDLE_THREAD
26 select GENERIC_STRNCPY_FROM_USER
27 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010028 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010029 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090030 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Rabin Vincent09f05d82012-02-18 17:52:41 +010031 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060032 select HAVE_ARCH_KGDB
Kees Cook91702172013-11-09 00:51:56 +010033 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010034 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010035 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010036 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010037 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010038 select HAVE_C_RECORDMCOUNT
39 select HAVE_DEBUG_KMEMLEAK
40 select HAVE_DMA_API_DEBUG
41 select HAVE_DMA_ATTRS
42 select HAVE_DMA_CONTIGUOUS if MMU
43 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Will Deacondce5c9e2013-12-17 19:50:16 +010044 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010045 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
46 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
47 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
48 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010049 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
50 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010051 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010052 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070053 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_KERNEL_LZMA
55 select HAVE_KERNEL_LZO
56 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010057 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080058 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010059 select HAVE_MEMBLOCK
Russell King171b3f02013-09-12 21:24:42 +010060 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
Russell Kingb1b3f492012-10-06 17:12:25 +010061 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jamie Iles7ada1892010-02-02 20:24:58 +010062 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010063 select HAVE_PERF_REGS
64 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070065 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010066 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010067 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070068 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070069 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010070 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010071 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040072 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010073 select OLD_SIGACTION
74 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010075 select PERF_USE_VMALLOC
76 select RTC_LIB
77 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010078 # Above selects are sorted alphabetically; please add new ones
79 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 help
81 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000082 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000084 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 Europe. There is an ARM Linux project with a web page at
86 <http://www.arm.linux.org.uk/>.
87
Russell King74facff2011-06-02 11:16:22 +010088config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070089 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010090 bool
91
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020092config NEED_SG_DMA_LENGTH
93 bool
94
95config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020096 bool
Russell Kingb1b3f492012-10-06 17:12:25 +010097 select ARM_HAS_SG_CHAIN
98 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020099
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900100if ARM_DMA_USE_IOMMU
101
102config ARM_DMA_IOMMU_ALIGNMENT
103 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
104 range 4 9
105 default 8
106 help
107 DMA mapping framework by default aligns all buffers to the smallest
108 PAGE_SIZE order which is greater than or equal to the requested buffer
109 size. This works well for buffers up to a few hundreds kilobytes, but
110 for larger buffers it just a waste of address space. Drivers which has
111 relatively small addressing window (like 64Mib) might run out of
112 virtual space with just a few allocations.
113
114 With this parameter you can specify the maximum PAGE_SIZE order for
115 DMA IOMMU buffers. Larger buffers will be aligned only to this
116 specified order. The order is expressed as a power of two multiplied
117 by the PAGE_SIZE.
118
119endif
120
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100121config MIGHT_HAVE_PCI
122 bool
123
Ralf Baechle75e71532007-02-09 17:08:58 +0000124config SYS_SUPPORTS_APM_EMULATION
125 bool
126
Linus Walleijbc581772009-09-15 17:30:37 +0100127config HAVE_TCM
128 bool
129 select GENERIC_ALLOCATOR
130
Russell Kinge119bff2010-01-10 17:23:29 +0000131config HAVE_PROC_CPU
132 bool
133
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700134config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000135 bool
Al Viro5ea81762007-02-11 15:41:31 +0000136
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137config EISA
138 bool
139 ---help---
140 The Extended Industry Standard Architecture (EISA) bus was
141 developed as an open alternative to the IBM MicroChannel bus.
142
143 The EISA bus provided some of the features of the IBM MicroChannel
144 bus while maintaining backward compatibility with cards made for
145 the older ISA bus. The EISA bus saw limited use between 1988 and
146 1995 when it was made obsolete by the PCI bus.
147
148 Say Y here if you are building a kernel for an EISA-based machine.
149
150 Otherwise, say N.
151
152config SBUS
153 bool
154
Russell Kingf16fb1e2007-04-28 09:59:37 +0100155config STACKTRACE_SUPPORT
156 bool
157 default y
158
Nicolas Pitref76e9152008-04-24 01:31:46 -0400159config HAVE_LATENCYTOP_SUPPORT
160 bool
161 depends on !SMP
162 default y
163
Russell Kingf16fb1e2007-04-28 09:59:37 +0100164config LOCKDEP_SUPPORT
165 bool
166 default y
167
Russell King7ad1bcb2006-08-27 12:07:02 +0100168config TRACE_IRQFLAGS_SUPPORT
169 bool
170 default y
171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172config RWSEM_XCHGADD_ALGORITHM
173 bool
Will Deacon8a874112014-05-02 17:06:19 +0100174 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
David Howellsf0d1b0b2006-12-08 02:37:49 -0800176config ARCH_HAS_ILOG2_U32
177 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800178
179config ARCH_HAS_ILOG2_U64
180 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800181
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100182config ARCH_HAS_BANDGAP
183 bool
184
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800185config GENERIC_HWEIGHT
186 bool
187 default y
188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189config GENERIC_CALIBRATE_DELAY
190 bool
191 default y
192
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100193config ARCH_MAY_HAVE_PC_FDC
194 bool
195
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800196config ZONE_DMA
197 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800198
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800199config NEED_DMA_MAP_STATE
200 def_bool y
201
David A. Longc7edc9e2014-03-07 11:23:04 -0500202config ARCH_SUPPORTS_UPROBES
203 def_bool y
204
Rob Herring58af4a22012-03-20 14:33:01 -0500205config ARCH_HAS_DMA_SET_COHERENT_MASK
206 bool
207
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208config GENERIC_ISA_DMA
209 bool
210
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211config FIQ
212 bool
213
Rob Herring13a50452012-02-07 09:28:22 -0600214config NEED_RET_TO_USER
215 bool
216
Al Viro034d2f52005-12-19 16:27:59 -0500217config ARCH_MTD_XIP
218 bool
219
Hyok S. Choic760fc12006-03-27 15:18:50 +0100220config VECTORS_BASE
221 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900222 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100223 default DRAM_BASE if REMAP_VECTORS_TO_RAM
224 default 0x00000000
225 help
Russell King19accfd2013-07-04 11:40:32 +0100226 The base address of exception vectors. This must be two pages
227 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100228
Russell Kingdc21af92011-01-04 19:09:43 +0000229config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100230 bool "Patch physical to virtual translations at runtime" if EMBEDDED
231 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100232 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000233 depends on !ARCH_REALVIEW || !SPARSEMEM
234 help
Russell King111e9a52011-05-12 10:02:42 +0100235 Patch phys-to-virt and virt-to-phys translation functions at
236 boot and module load time according to the position of the
237 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000238
Russell King111e9a52011-05-12 10:02:42 +0100239 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100240 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000241
Russell Kingc1beced2011-08-10 10:23:45 +0100242 Only disable this option if you know that you do not require
243 this feature (eg, building a kernel for a single machine) and
244 you need to shrink the kernel to the minimal size.
245
Rob Herringc334bc12012-03-04 22:03:33 -0600246config NEED_MACH_IO_H
247 bool
248 help
249 Select this when mach/io.h is required to provide special
250 definitions for this platform. The need for mach/io.h should
251 be avoided when possible.
252
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400253config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400254 bool
Russell King111e9a52011-05-12 10:02:42 +0100255 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400256 Select this when mach/memory.h is required to provide special
257 definitions for this platform. The need for mach/memory.h should
258 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400259
260config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100261 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100262 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100263 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100264 default 0x00000000 if ARCH_EBSA110 || \
265 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
266 ARCH_FOOTBRIDGE || \
267 ARCH_INTEGRATOR || \
268 ARCH_IOP13XX || \
269 ARCH_KS8695 || \
270 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
271 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
272 default 0x20000000 if ARCH_S5PV210
273 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
274 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
275 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
276 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
277 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400278 help
279 Please provide the physical address corresponding to the
280 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000281
Simon Glass87e040b2011-08-16 23:44:26 +0100282config GENERIC_BUG
283 def_bool y
284 depends on BUG
285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286source "init/Kconfig"
287
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700288source "kernel/Kconfig.freezer"
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290menu "System Type"
291
Hyok S. Choi3c427972009-07-24 12:35:00 +0100292config MMU
293 bool "MMU-based Paged Memory Management Support"
294 default y
295 help
296 Select if you want MMU-based virtualised addressing space
297 support by paged memory management. If unsure, say 'Y'.
298
Russell Kingccf50e22010-03-15 19:03:06 +0000299#
300# The "ARM system type" choice list is ordered alphabetically by option
301# text. Please add new entries in the option alphabetic order.
302#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303choice
304 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100305 default ARCH_VERSATILE if !MMU
306 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307
Rob Herring387798b2012-09-06 13:41:12 -0500308config ARCH_MULTIPLATFORM
309 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100310 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600311 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700312 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500313 select ARM_PATCH_PHYS_VIRT
314 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500315 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600316 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600317 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100318 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500319 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600320 select SPARSE_IRQ
321 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600322
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100323config ARCH_REALVIEW
324 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100325 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100326 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100327 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200328 select COMMON_CLK
329 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100330 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100331 select GPIO_PL061 if GPIOLIB
332 select ICST
333 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000334 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000335 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100336 help
337 This enables support for ARM Ltd RealView boards.
338
339config ARCH_VERSATILE
340 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100341 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100342 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100343 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100344 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100345 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100346 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900347 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000348 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000349 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100350 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000351 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100352 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100353 help
354 This enables support for ARM Ltd Versatile board.
355
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100356config ARCH_AT91
357 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100358 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100359 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100360 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500361 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800362 select PINCTRL
Nicolas Ferred48346c2014-11-21 16:41:50 +0100363 select PINCTRL_AT91
364 select USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100365 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100366 This enables support for systems based on Atmel
Nicolas Ferre32963a82014-11-21 16:44:31 +0100367 AT91RM9200, AT91SAM9 and SAMA5 processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100368
Russell King93e22562012-10-12 14:20:52 +0100369config ARCH_CLPS711X
370 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400371 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400372 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400373 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100374 select COMMON_CLK
375 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400376 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400377 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400378 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100379 help
380 Support for Cirrus Logic 711x/721x/731x based boards.
381
Russell King788c9702009-04-26 14:21:59 +0100382config ARCH_GEMINI
383 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100384 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200385 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100386 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200387 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100388 help
389 Support for the Cortina Systems Gemini family SoCs
390
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391config ARCH_EBSA110
392 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100393 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000394 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100395 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600396 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400397 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700398 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 help
400 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000401 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 Ethernet interface, two PCMCIA sockets, two serial ports and a
403 parallel port.
404
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100405config ARCH_EFM32
406 bool "Energy Micro efm32"
407 depends on !MMU
408 select ARCH_REQUIRE_GPIOLIB
409 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100410 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100411 select CLKSRC_OF
412 select COMMON_CLK
413 select CPU_V7M
414 select GENERIC_CLOCKEVENTS
415 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700416 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100417 select SPARSE_IRQ
418 select USE_OF
419 help
420 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
421 processors.
422
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000423config ARCH_EP93XX
424 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100425 select ARCH_HAS_HOLES_MEMORYMODEL
426 select ARCH_REQUIRE_GPIOLIB
427 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000428 select ARM_AMBA
429 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100430 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100431 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000432 help
433 This enables support for the Cirrus EP93xx series of CPUs.
434
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435config ARCH_FOOTBRIDGE
436 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000437 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000439 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200440 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600441 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400442 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000443 help
444 Support for systems based on the DC21285 companion chip
445 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100447config ARCH_NETX
448 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100449 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100450 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000451 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100452 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000453 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100454 This enables support for systems based on the Hilscher NetX Soc
455
Russell King3b938be2007-05-12 11:25:44 +0100456config ARCH_IOP13XX
457 bool "IOP13xx-based"
458 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100459 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400460 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600461 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100462 select PCI
463 select PLAT_IOP
464 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000465 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100466 help
467 Support for Intel's IOP13XX (XScale) family of processors.
468
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100469config ARCH_IOP32X
470 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100471 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100472 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000473 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200474 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600475 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100476 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100477 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000478 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100479 Support for Intel's 80219 and IOP32X (XScale) family of
480 processors.
481
482config ARCH_IOP33X
483 bool "IOP33x-based"
484 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100485 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000486 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200487 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600488 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100489 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100490 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100491 help
492 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493
Russell King3b938be2007-05-12 11:25:44 +0100494config ARCH_IXP4XX
495 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100496 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500497 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100498 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100499 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100500 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000501 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100502 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100503 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100504 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600505 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200506 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100507 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100508 help
Russell King3b938be2007-05-12 11:25:44 +0100509 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100510
Saeed Bisharaedabd382009-08-06 15:12:43 +0300511config ARCH_DOVE
512 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300513 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100514 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300515 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100516 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100517 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100518 select PINCTRL
519 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200520 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300521 help
522 Support for the Marvell Dove SoC 88AP510
523
Russell King788c9702009-04-26 14:21:59 +0100524config ARCH_MV78XX0
525 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700526 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100527 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100528 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100529 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100530 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200531 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100532 help
533 Support for the following Marvell MV78xx0 series SoCs:
534 MV781x0, MV782x0.
535
536config ARCH_ORION5X
537 bool "Marvell Orion"
538 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700539 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100540 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100541 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100542 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100543 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200544 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100545 help
546 Support for the following Marvell Orion 5x series SoCs:
547 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
548 Orion-2 (5281), Orion-1-90 (6183).
549
550config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500551 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100552 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100553 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100554 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100555 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100556 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800557 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800558 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800559 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800560 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100561 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400562 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100563 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500564 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100565
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100566config ARCH_KS8695
567 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100568 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200569 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100570 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200571 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100572 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100573 help
574 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
575 System-on-Chip devices.
576
Russell King788c9702009-04-26 14:21:59 +0100577config ARCH_W90X900
578 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100579 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100580 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100581 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100582 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100583 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200584 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100585 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
586 At present, the w90x900 has been renamed nuc900, regarding
587 the ARM series product line, you can login the following
588 link address to know more.
589
590 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
591 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400592
Russell King93e22562012-10-12 14:20:52 +0100593config ARCH_LPC32XX
594 bool "NXP LPC32XX"
595 select ARCH_REQUIRE_GPIOLIB
596 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000597 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100598 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100599 select CPU_ARM926T
600 select GENERIC_CLOCKEVENTS
601 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100602 select USE_OF
603 help
604 Support for the NXP LPC32XX family of processors
605
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700607 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100608 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100609 select ARCH_MTD_XIP
610 select ARCH_REQUIRE_GPIOLIB
611 select ARM_CPU_SUSPEND if PM
612 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100613 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100614 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200615 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100616 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800617 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100618 select HAVE_IDE
619 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800620 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800621 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000622 help
eric miao2c8086a2007-09-11 19:13:17 -0700623 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600625config ARCH_MSM
626 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700627 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700628 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100629 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800630 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800631 Support for Qualcomm MSM/QSD based systems. This runs on the
632 apps processor of the MSM/QSD and depends on a shared memory
633 interface to the modem processor which runs the baseband
634 stack and controls some vital subsystems
635 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800636
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100637config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100638 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100639 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100640 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900641 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900642 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100643 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800644 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800645 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900646 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000647 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000648 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000649 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700650 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200651 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100652 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900653 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100654 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000655 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100656 Support for Renesas ARM SoC platforms using a non-multiplatform
657 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
658 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000659
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660config ARCH_RPC
661 bool "RiscPC"
662 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100663 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100664 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000665 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100666 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100667 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200668 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100669 select HAVE_PATA_PLATFORM
670 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600671 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400672 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700673 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100674 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 help
676 On the Acorn Risc-PC, Linux can support the internal IDE disk and
677 CD-ROM interface, serial and parallel port, and the floppy drive.
678
679config ARCH_SA1100
680 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100681 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700682 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100683 select ARCH_SPARSEMEM_ENABLE
684 select CLKDEV_LOOKUP
685 select CLKSRC_MMIO
686 select CPU_FREQ
687 select CPU_SA1100
688 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200689 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100690 select ISA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400691 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100692 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000693 help
694 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900696config ARCH_S3C24XX
697 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900698 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100699 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100700 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200701 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800702 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900703 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900704 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900705 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100706 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900707 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600708 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900709 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900711 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
712 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
713 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
714 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900715
Ben Dooksa08ab632008-10-21 14:06:39 +0100716config ARCH_S3C64XX
717 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900718 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200719 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100720 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100721 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100722 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200723 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900724 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900725 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800726 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900727 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900728 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900729 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100730 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700731 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100732 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100733 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100734 select S3C_DEV_NAND
735 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900736 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900737 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900738 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100739 help
740 Samsung S3C64XX series based systems
741
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100742config ARCH_DAVINCI
743 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100744 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700745 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100746 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700747 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100748 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100749 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100750 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500751 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530752 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100753 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100754 help
755 Support for TI's DaVinci platform.
756
Tony Lindgrena0694862013-01-11 11:24:20 -0800757config ARCH_OMAP1
758 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600759 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100760 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800761 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100762 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200763 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100764 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100765 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800766 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800767 select HAVE_IDE
768 select IRQ_DOMAIN
769 select NEED_MACH_IO_H if PCCARD
770 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100771 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800772 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800773
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774endchoice
775
Rob Herring387798b2012-09-06 13:41:12 -0500776menu "Multiple platform selection"
777 depends on ARCH_MULTIPLATFORM
778
779comment "CPU Core family selection"
780
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100781config ARCH_MULTI_V4
782 bool "ARMv4 based platforms (FA526)"
783 depends on !ARCH_MULTI_V6_V7
784 select ARCH_MULTI_V4_V5
785 select CPU_FA526
786
Rob Herring387798b2012-09-06 13:41:12 -0500787config ARCH_MULTI_V4T
788 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500789 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100790 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200791 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
792 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
793 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500794
795config ARCH_MULTI_V5
796 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500797 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100798 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100799 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200800 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
801 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500802
803config ARCH_MULTI_V4_V5
804 bool
805
806config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800807 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500808 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600809 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500810
811config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800812 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500813 default y
814 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100815 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600816 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500817
818config ARCH_MULTI_V6_V7
819 bool
Rob Herring9352b052014-01-31 15:36:10 -0600820 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500821
822config ARCH_MULTI_CPU_AUTO
823 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
824 select ARCH_MULTI_V5
825
826endmenu
827
Rob Herring05e2a3d2013-12-05 10:04:54 -0600828config ARCH_VIRT
829 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600830 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600831 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600832 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600833 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600834
Russell Kingccf50e22010-03-15 19:03:06 +0000835#
836# This is sorted alphabetically by mach-* pathname. However, plat-*
837# Kconfigs may be included either alphabetically (according to the
838# plat- suffix) or along side the corresponding mach-* source.
839#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200840source "arch/arm/mach-mvebu/Kconfig"
841
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100842source "arch/arm/mach-asm9260/Kconfig"
843
Russell King95b8f202010-01-14 11:43:54 +0000844source "arch/arm/mach-at91/Kconfig"
845
Anders Berg1d229242014-05-23 11:08:35 +0200846source "arch/arm/mach-axxia/Kconfig"
847
Christian Daudt8ac49e02012-11-19 09:46:10 -0800848source "arch/arm/mach-bcm/Kconfig"
849
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200850source "arch/arm/mach-berlin/Kconfig"
851
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852source "arch/arm/mach-clps711x/Kconfig"
853
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300854source "arch/arm/mach-cns3xxx/Kconfig"
855
Russell King95b8f202010-01-14 11:43:54 +0000856source "arch/arm/mach-davinci/Kconfig"
857
858source "arch/arm/mach-dove/Kconfig"
859
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000860source "arch/arm/mach-ep93xx/Kconfig"
861
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862source "arch/arm/mach-footbridge/Kconfig"
863
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200864source "arch/arm/mach-gemini/Kconfig"
865
Rob Herring387798b2012-09-06 13:41:12 -0500866source "arch/arm/mach-highbank/Kconfig"
867
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800868source "arch/arm/mach-hisi/Kconfig"
869
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870source "arch/arm/mach-integrator/Kconfig"
871
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100872source "arch/arm/mach-iop32x/Kconfig"
873
874source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875
Dan Williams285f5fa2006-12-07 02:59:39 +0100876source "arch/arm/mach-iop13xx/Kconfig"
877
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878source "arch/arm/mach-ixp4xx/Kconfig"
879
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400880source "arch/arm/mach-keystone/Kconfig"
881
Russell King95b8f202010-01-14 11:43:54 +0000882source "arch/arm/mach-ks8695/Kconfig"
883
Carlo Caione3b8f5032014-09-10 22:16:59 +0200884source "arch/arm/mach-meson/Kconfig"
885
Russell King95b8f202010-01-14 11:43:54 +0000886source "arch/arm/mach-msm/Kconfig"
887
Jonas Jensen17723fd2013-12-18 13:58:45 +0100888source "arch/arm/mach-moxart/Kconfig"
889
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200890source "arch/arm/mach-mv78xx0/Kconfig"
891
Shawn Guo3995eb82012-09-13 19:48:07 +0800892source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893
Matthias Bruggerf682a212014-05-13 01:06:13 +0200894source "arch/arm/mach-mediatek/Kconfig"
895
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800896source "arch/arm/mach-mxs/Kconfig"
897
Russell King95b8f202010-01-14 11:43:54 +0000898source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800899
Russell King95b8f202010-01-14 11:43:54 +0000900source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000901
Daniel Tang9851ca52013-06-11 18:40:17 +1000902source "arch/arm/mach-nspire/Kconfig"
903
Tony Lindgrend48af152005-07-10 19:58:17 +0100904source "arch/arm/plat-omap/Kconfig"
905
906source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907
Tony Lindgren1dbae812005-11-10 14:26:51 +0000908source "arch/arm/mach-omap2/Kconfig"
909
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400910source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400911
Rob Herring387798b2012-09-06 13:41:12 -0500912source "arch/arm/mach-picoxcell/Kconfig"
913
Russell King95b8f202010-01-14 11:43:54 +0000914source "arch/arm/mach-pxa/Kconfig"
915source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916
Russell King95b8f202010-01-14 11:43:54 +0000917source "arch/arm/mach-mmp/Kconfig"
918
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600919source "arch/arm/mach-qcom/Kconfig"
920
Russell King95b8f202010-01-14 11:43:54 +0000921source "arch/arm/mach-realview/Kconfig"
922
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200923source "arch/arm/mach-rockchip/Kconfig"
924
Russell King95b8f202010-01-14 11:43:54 +0000925source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300926
Rob Herring387798b2012-09-06 13:41:12 -0500927source "arch/arm/mach-socfpga/Kconfig"
928
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100929source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100930
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100931source "arch/arm/mach-sti/Kconfig"
932
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900933source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934
Ben Dooks431107e2010-01-26 10:11:04 +0900935source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100936
Kukjin Kim170f4e42010-02-24 16:40:44 +0900937source "arch/arm/mach-s5pv210/Kconfig"
938
Kukjin Kim83014572011-11-06 13:54:56 +0900939source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500940source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900941
Russell King882d01f2010-03-02 23:40:15 +0000942source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943
Maxime Ripard3b526342012-11-08 12:40:16 +0100944source "arch/arm/mach-sunxi/Kconfig"
945
Barry Song156a0992012-08-23 13:41:58 +0800946source "arch/arm/mach-prima2/Kconfig"
947
Erik Gillingc5f80062010-01-21 16:53:02 -0800948source "arch/arm/mach-tegra/Kconfig"
949
Russell King95b8f202010-01-14 11:43:54 +0000950source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951
Russell King95b8f202010-01-14 11:43:54 +0000952source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953
954source "arch/arm/mach-versatile/Kconfig"
955
Russell Kingceade892010-02-11 21:44:53 +0000956source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000957source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000958
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300959source "arch/arm/mach-vt8500/Kconfig"
960
wanzongshun7ec80dd2008-12-03 03:55:38 +0100961source "arch/arm/mach-w90x900/Kconfig"
962
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600963source "arch/arm/mach-zynq/Kconfig"
964
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965# Definitions to make life easier
966config ARCH_ACORN
967 bool
968
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100969config PLAT_IOP
970 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700971 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100972
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400973config PLAT_ORION
974 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100975 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100976 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100977 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200978 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400979
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200980config PLAT_ORION_LEGACY
981 bool
982 select PLAT_ORION
983
Eric Miaobd5ce432009-01-20 12:06:01 +0800984config PLAT_PXA
985 bool
986
Russell Kingf4b8b312010-01-14 12:48:06 +0000987config PLAT_VERSATILE
988 bool
989
Russell Kinge3887712010-01-14 13:30:16 +0000990config ARM_TIMER_SP804
991 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100992 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -0500993 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +0000994
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900995source "arch/arm/firmware/Kconfig"
996
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997source arch/arm/mm/Kconfig
998
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100999config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001000 bool "Enable iWMMXt support"
1001 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1002 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001003 help
1004 Enable support for iWMMXt context switching at run time if
1005 running on a CPU that supports it.
1006
eric miao52108642010-12-13 09:42:34 +01001007config MULTI_IRQ_HANDLER
1008 bool
1009 help
1010 Allow each machine to specify it's own IRQ handler at run time.
1011
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001012if !MMU
1013source "arch/arm/Kconfig-nommu"
1014endif
1015
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001016config PJ4B_ERRATA_4742
1017 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1018 depends on CPU_PJ4B && MACH_ARMADA_370
1019 default y
1020 help
1021 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1022 Event (WFE) IDLE states, a specific timing sensitivity exists between
1023 the retiring WFI/WFE instructions and the newly issued subsequent
1024 instructions. This sensitivity can result in a CPU hang scenario.
1025 Workaround:
1026 The software must insert either a Data Synchronization Barrier (DSB)
1027 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1028 instruction
1029
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001030config ARM_ERRATA_326103
1031 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1032 depends on CPU_V6
1033 help
1034 Executing a SWP instruction to read-only memory does not set bit 11
1035 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1036 treat the access as a read, preventing a COW from occurring and
1037 causing the faulting task to livelock.
1038
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001039config ARM_ERRATA_411920
1040 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001041 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001042 help
1043 Invalidation of the Instruction Cache operation can
1044 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1045 It does not affect the MPCore. This option enables the ARM Ltd.
1046 recommended workaround.
1047
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001048config ARM_ERRATA_430973
1049 bool "ARM errata: Stale prediction on replaced interworking branch"
1050 depends on CPU_V7
1051 help
1052 This option enables the workaround for the 430973 Cortex-A8
1053 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1054 interworking branch is replaced with another code sequence at the
1055 same virtual address, whether due to self-modifying code or virtual
1056 to physical address re-mapping, Cortex-A8 does not recover from the
1057 stale interworking branch prediction. This results in Cortex-A8
1058 executing the new code sequence in the incorrect ARM or Thumb state.
1059 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1060 and also flushes the branch target cache at every context switch.
1061 Note that setting specific bits in the ACTLR register may not be
1062 available in non-secure mode.
1063
Catalin Marinas855c5512009-04-30 17:06:15 +01001064config ARM_ERRATA_458693
1065 bool "ARM errata: Processor deadlock when a false hazard is created"
1066 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001067 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001068 help
1069 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1070 erratum. For very specific sequences of memory operations, it is
1071 possible for a hazard condition intended for a cache line to instead
1072 be incorrectly associated with a different cache line. This false
1073 hazard might then cause a processor deadlock. The workaround enables
1074 the L1 caching of the NEON accesses and disables the PLD instruction
1075 in the ACTLR register. Note that setting specific bits in the ACTLR
1076 register may not be available in non-secure mode.
1077
Catalin Marinas0516e462009-04-30 17:06:20 +01001078config ARM_ERRATA_460075
1079 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1080 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001081 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001082 help
1083 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1084 erratum. Any asynchronous access to the L2 cache may encounter a
1085 situation in which recent store transactions to the L2 cache are lost
1086 and overwritten with stale memory contents from external memory. The
1087 workaround disables the write-allocate mode for the L2 cache via the
1088 ACTLR register. Note that setting specific bits in the ACTLR register
1089 may not be available in non-secure mode.
1090
Will Deacon9f050272010-09-14 09:51:43 +01001091config ARM_ERRATA_742230
1092 bool "ARM errata: DMB operation may be faulty"
1093 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001094 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001095 help
1096 This option enables the workaround for the 742230 Cortex-A9
1097 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1098 between two write operations may not ensure the correct visibility
1099 ordering of the two writes. This workaround sets a specific bit in
1100 the diagnostic register of the Cortex-A9 which causes the DMB
1101 instruction to behave as a DSB, ensuring the correct behaviour of
1102 the two writes.
1103
Will Deacona672e992010-09-14 09:53:02 +01001104config ARM_ERRATA_742231
1105 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1106 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001107 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001108 help
1109 This option enables the workaround for the 742231 Cortex-A9
1110 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1111 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1112 accessing some data located in the same cache line, may get corrupted
1113 data due to bad handling of the address hazard when the line gets
1114 replaced from one of the CPUs at the same time as another CPU is
1115 accessing it. This workaround sets specific bits in the diagnostic
1116 register of the Cortex-A9 which reduces the linefill issuing
1117 capabilities of the processor.
1118
Jon Medhurst69155792013-06-07 10:35:35 +01001119config ARM_ERRATA_643719
1120 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1121 depends on CPU_V7 && SMP
1122 help
1123 This option enables the workaround for the 643719 Cortex-A9 (prior to
1124 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1125 register returns zero when it should return one. The workaround
1126 corrects this value, ensuring cache maintenance operations which use
1127 it behave as intended and avoiding data corruption.
1128
Will Deaconcdf357f2010-08-05 11:20:51 +01001129config ARM_ERRATA_720789
1130 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001131 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001132 help
1133 This option enables the workaround for the 720789 Cortex-A9 (prior to
1134 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1135 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1136 As a consequence of this erratum, some TLB entries which should be
1137 invalidated are not, resulting in an incoherency in the system page
1138 tables. The workaround changes the TLB flushing routines to invalidate
1139 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001140
1141config ARM_ERRATA_743622
1142 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1143 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001144 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001145 help
1146 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001147 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001148 optimisation in the Cortex-A9 Store Buffer may lead to data
1149 corruption. This workaround sets a specific bit in the diagnostic
1150 register of the Cortex-A9 which disables the Store Buffer
1151 optimisation, preventing the defect from occurring. This has no
1152 visible impact on the overall performance or power consumption of the
1153 processor.
1154
Will Deacon9a27c272011-02-18 16:36:35 +01001155config ARM_ERRATA_751472
1156 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001157 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001158 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001159 help
1160 This option enables the workaround for the 751472 Cortex-A9 (prior
1161 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1162 completion of a following broadcasted operation if the second
1163 operation is received by a CPU before the ICIALLUIS has completed,
1164 potentially leading to corrupted entries in the cache or TLB.
1165
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001166config ARM_ERRATA_754322
1167 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1168 depends on CPU_V7
1169 help
1170 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1171 r3p*) erratum. A speculative memory access may cause a page table walk
1172 which starts prior to an ASID switch but completes afterwards. This
1173 can populate the micro-TLB with a stale entry which may be hit with
1174 the new ASID. This workaround places two dsb instructions in the mm
1175 switching code so that no page table walks can cross the ASID switch.
1176
Will Deacon5dab26af2011-03-04 12:38:54 +01001177config ARM_ERRATA_754327
1178 bool "ARM errata: no automatic Store Buffer drain"
1179 depends on CPU_V7 && SMP
1180 help
1181 This option enables the workaround for the 754327 Cortex-A9 (prior to
1182 r2p0) erratum. The Store Buffer does not have any automatic draining
1183 mechanism and therefore a livelock may occur if an external agent
1184 continuously polls a memory location waiting to observe an update.
1185 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1186 written polling loops from denying visibility of updates to memory.
1187
Catalin Marinas145e10e2011-08-15 11:04:41 +01001188config ARM_ERRATA_364296
1189 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001190 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001191 help
1192 This options enables the workaround for the 364296 ARM1136
1193 r0p2 erratum (possible cache data corruption with
1194 hit-under-miss enabled). It sets the undocumented bit 31 in
1195 the auxiliary control register and the FI bit in the control
1196 register, thus disabling hit-under-miss without putting the
1197 processor into full low interrupt latency mode. ARM11MPCore
1198 is not affected.
1199
Will Deaconf630c1b2011-09-15 11:45:15 +01001200config ARM_ERRATA_764369
1201 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1202 depends on CPU_V7 && SMP
1203 help
1204 This option enables the workaround for erratum 764369
1205 affecting Cortex-A9 MPCore with two or more processors (all
1206 current revisions). Under certain timing circumstances, a data
1207 cache line maintenance operation by MVA targeting an Inner
1208 Shareable memory region may fail to proceed up to either the
1209 Point of Coherency or to the Point of Unification of the
1210 system. This workaround adds a DSB instruction before the
1211 relevant cache maintenance functions and sets a specific bit
1212 in the diagnostic control register of the SCU.
1213
Simon Horman7253b852012-09-28 02:12:45 +01001214config ARM_ERRATA_775420
1215 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1216 depends on CPU_V7
1217 help
1218 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1219 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1220 operation aborts with MMU exception, it might cause the processor
1221 to deadlock. This workaround puts DSB before executing ISB if
1222 an abort may occur on cache maintenance.
1223
Catalin Marinas93dc6882013-03-26 23:35:04 +01001224config ARM_ERRATA_798181
1225 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1226 depends on CPU_V7 && SMP
1227 help
1228 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1229 adequately shooting down all use of the old entries. This
1230 option enables the Linux kernel workaround for this erratum
1231 which sends an IPI to the CPUs that are running the same ASID
1232 as the one being invalidated.
1233
Will Deacon84b65042013-08-20 17:29:55 +01001234config ARM_ERRATA_773022
1235 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1236 depends on CPU_V7
1237 help
1238 This option enables the workaround for the 773022 Cortex-A15
1239 (up to r0p4) erratum. In certain rare sequences of code, the
1240 loop buffer may deliver incorrect instructions. This
1241 workaround disables the loop buffer to avoid the erratum.
1242
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243endmenu
1244
1245source "arch/arm/common/Kconfig"
1246
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247menu "Bus support"
1248
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249config ISA
1250 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 help
1252 Find out whether you have ISA slots on your motherboard. ISA is the
1253 name of a bus system, i.e. the way the CPU talks to the other stuff
1254 inside your box. Other bus systems are PCI, EISA, MicroChannel
1255 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1256 newer boards don't support it. If you have ISA, say Y, otherwise N.
1257
Russell King065909b2006-01-04 15:44:16 +00001258# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259config ISA_DMA
1260 bool
Russell King065909b2006-01-04 15:44:16 +00001261 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262
Russell King065909b2006-01-04 15:44:16 +00001263# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001264config ISA_DMA_API
1265 bool
Al Viro5cae8412005-05-04 05:39:22 +01001266
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001268 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 help
1270 Find out whether you have a PCI motherboard. PCI is the name of a
1271 bus system, i.e. the way the CPU talks to the other stuff inside
1272 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1273 VESA. If you have PCI, say Y, otherwise N.
1274
Anton Vorontsov52882172010-04-19 13:20:49 +01001275config PCI_DOMAINS
1276 bool
1277 depends on PCI
1278
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001279config PCI_NANOENGINE
1280 bool "BSE nanoEngine PCI support"
1281 depends on SA1100_NANOENGINE
1282 help
1283 Enable PCI on the BSE nanoEngine board.
1284
Matthew Wilcox36e23592007-07-10 10:54:40 -06001285config PCI_SYSCALL
1286 def_bool PCI
1287
Mike Rapoporta0113a92007-11-25 08:55:34 +01001288config PCI_HOST_ITE8152
1289 bool
1290 depends on PCI && MACH_ARMCORE
1291 default y
1292 select DMABOUNCE
1293
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001295source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296
1297source "drivers/pcmcia/Kconfig"
1298
1299endmenu
1300
1301menu "Kernel Features"
1302
Dave Martin3b556582011-12-07 15:38:04 +00001303config HAVE_SMP
1304 bool
1305 help
1306 This option should be selected by machines which have an SMP-
1307 capable CPU.
1308
1309 The only effect of this option is to make the SMP-related
1310 options available to the user for configuration.
1311
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001313 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001314 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001315 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001316 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001317 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318 help
1319 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001320 a system with only one CPU, say N. If you have a system with more
1321 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322
Robert Graffham4a474152014-01-23 15:55:29 -08001323 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001325 you say Y here, the kernel will run on many, but not all,
1326 uniprocessor machines. On a uniprocessor machine, the kernel
1327 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328
Paul Bolle395cf962011-08-15 02:02:26 +02001329 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001331 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332
1333 If you don't know what to do here, say N.
1334
Russell Kingf00ec482010-09-04 10:47:48 +01001335config SMP_ON_UP
1336 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001337 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001338 default y
1339 help
1340 SMP kernels contain instructions which fail on non-SMP processors.
1341 Enabling this option allows the kernel to modify itself to make
1342 these instructions safe. Disabling it allows about 1K of space
1343 savings.
1344
1345 If you don't know what to do here, say Y.
1346
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001347config ARM_CPU_TOPOLOGY
1348 bool "Support cpu topology definition"
1349 depends on SMP && CPU_V7
1350 default y
1351 help
1352 Support ARM cpu topology definition. The MPIDR register defines
1353 affinity between processors which is then used to describe the cpu
1354 topology of an ARM System.
1355
1356config SCHED_MC
1357 bool "Multi-core scheduler support"
1358 depends on ARM_CPU_TOPOLOGY
1359 help
1360 Multi-core scheduler support improves the CPU scheduler's decision
1361 making when dealing with multi-core CPU chips at a cost of slightly
1362 increased overhead in some places. If unsure say N here.
1363
1364config SCHED_SMT
1365 bool "SMT scheduler support"
1366 depends on ARM_CPU_TOPOLOGY
1367 help
1368 Improves the CPU scheduler's decision making when dealing with
1369 MultiThreading at a cost of slightly increased overhead in some
1370 places. If unsure say N here.
1371
Russell Kinga8cbcd92009-05-16 11:51:14 +01001372config HAVE_ARM_SCU
1373 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001374 help
1375 This option enables support for the ARM system coherency unit
1376
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001377config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001378 bool "Architected timer support"
1379 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001380 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001381 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001382 help
1383 This option enables support for the ARM architected timer
1384
Russell Kingf32f4ce2009-05-16 12:14:21 +01001385config HAVE_ARM_TWD
1386 bool
1387 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001388 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001389 help
1390 This options enables support for the ARM timer and watchdog unit
1391
Nicolas Pitree8db2882012-04-12 02:45:22 -04001392config MCPM
1393 bool "Multi-Cluster Power Management"
1394 depends on CPU_V7 && SMP
1395 help
1396 This option provides the common power management infrastructure
1397 for (multi-)cluster based systems, such as big.LITTLE based
1398 systems.
1399
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001400config MCPM_QUAD_CLUSTER
1401 bool
1402 depends on MCPM
1403 help
1404 To avoid wasting resources unnecessarily, MCPM only supports up
1405 to 2 clusters by default.
1406 Platforms with 3 or 4 clusters that use MCPM must select this
1407 option to allow the additional clusters to be managed.
1408
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001409config BIG_LITTLE
1410 bool "big.LITTLE support (Experimental)"
1411 depends on CPU_V7 && SMP
1412 select MCPM
1413 help
1414 This option enables support selections for the big.LITTLE
1415 system architecture.
1416
1417config BL_SWITCHER
1418 bool "big.LITTLE switcher support"
1419 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001420 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001421 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001422 help
1423 The big.LITTLE "switcher" provides the core functionality to
1424 transparently handle transition between a cluster of A15's
1425 and a cluster of A7's in a big.LITTLE system.
1426
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001427config BL_SWITCHER_DUMMY_IF
1428 tristate "Simple big.LITTLE switcher user interface"
1429 depends on BL_SWITCHER && DEBUG_KERNEL
1430 help
1431 This is a simple and dummy char dev interface to control
1432 the big.LITTLE switcher core code. It is meant for
1433 debugging purposes only.
1434
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001435choice
1436 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001437 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001438 default VMSPLIT_3G
1439 help
1440 Select the desired split between kernel and user memory.
1441
1442 If you are not absolutely sure what you are doing, leave this
1443 option alone!
1444
1445 config VMSPLIT_3G
1446 bool "3G/1G user/kernel split"
1447 config VMSPLIT_2G
1448 bool "2G/2G user/kernel split"
1449 config VMSPLIT_1G
1450 bool "1G/3G user/kernel split"
1451endchoice
1452
1453config PAGE_OFFSET
1454 hex
Russell King006fa252014-02-26 19:40:46 +00001455 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001456 default 0x40000000 if VMSPLIT_1G
1457 default 0x80000000 if VMSPLIT_2G
1458 default 0xC0000000
1459
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460config NR_CPUS
1461 int "Maximum number of CPUs (2-32)"
1462 range 2 32
1463 depends on SMP
1464 default "4"
1465
Russell Kinga054a812005-11-02 22:24:33 +00001466config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001467 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001468 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001469 help
1470 Say Y here to experiment with turning CPUs off and on. CPUs
1471 can be controlled through /sys/devices/system/cpu.
1472
Will Deacon2bdd4242012-12-12 19:20:52 +00001473config ARM_PSCI
1474 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1475 depends on CPU_V7
1476 help
1477 Say Y here if you want Linux to communicate with system firmware
1478 implementing the PSCI specification for CPU-centric power
1479 management operations described in ARM document number ARM DEN
1480 0022A ("Power State Coordination Interface System Software on
1481 ARM processors").
1482
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001483# The GPIO number here must be sorted by descending number. In case of
1484# a multiplatform kernel, we just want the highest value required by the
1485# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001486config ARCH_NR_GPIO
1487 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001488 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001489 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1490 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001491 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001492 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001493 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001494 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001495 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001496 default 0
1497 help
1498 Maximum number of GPIOs in the system.
1499
1500 If unsure, leave the default value.
1501
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001502source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001503
Russell Kingc9218b12013-04-27 23:31:10 +01001504config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001505 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001506 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001507 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001508 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001509 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001510 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001511
1512choice
Russell King47d84682013-09-10 23:47:55 +01001513 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001514 prompt "Timer frequency"
1515
1516config HZ_100
1517 bool "100 Hz"
1518
1519config HZ_200
1520 bool "200 Hz"
1521
1522config HZ_250
1523 bool "250 Hz"
1524
1525config HZ_300
1526 bool "300 Hz"
1527
1528config HZ_500
1529 bool "500 Hz"
1530
1531config HZ_1000
1532 bool "1000 Hz"
1533
1534endchoice
1535
1536config HZ
1537 int
Russell King47d84682013-09-10 23:47:55 +01001538 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001539 default 100 if HZ_100
1540 default 200 if HZ_200
1541 default 250 if HZ_250
1542 default 300 if HZ_300
1543 default 500 if HZ_500
1544 default 1000
1545
1546config SCHED_HRTICK
1547 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001548
Catalin Marinas16c79652009-07-24 12:33:02 +01001549config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001550 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001551 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001552 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001553 select AEABI
1554 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001555 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001556 help
1557 By enabling this option, the kernel will be compiled in
1558 Thumb-2 mode. A compiler/assembler that understand the unified
1559 ARM-Thumb syntax is needed.
1560
1561 If unsure, say N.
1562
Dave Martin6f685c52011-03-03 11:41:12 +01001563config THUMB2_AVOID_R_ARM_THM_JUMP11
1564 bool "Work around buggy Thumb-2 short branch relocations in gas"
1565 depends on THUMB2_KERNEL && MODULES
1566 default y
1567 help
1568 Various binutils versions can resolve Thumb-2 branches to
1569 locally-defined, preemptible global symbols as short-range "b.n"
1570 branch instructions.
1571
1572 This is a problem, because there's no guarantee the final
1573 destination of the symbol, or any candidate locations for a
1574 trampoline, are within range of the branch. For this reason, the
1575 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1576 relocation in modules at all, and it makes little sense to add
1577 support.
1578
1579 The symptom is that the kernel fails with an "unsupported
1580 relocation" error when loading some modules.
1581
1582 Until fixed tools are available, passing
1583 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1584 code which hits this problem, at the cost of a bit of extra runtime
1585 stack usage in some cases.
1586
1587 The problem is described in more detail at:
1588 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1589
1590 Only Thumb-2 kernels are affected.
1591
1592 Unless you are sure your tools don't have this problem, say Y.
1593
Catalin Marinas0becb082009-07-24 12:32:53 +01001594config ARM_ASM_UNIFIED
1595 bool
1596
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001597config AEABI
1598 bool "Use the ARM EABI to compile the kernel"
1599 help
1600 This option allows for the kernel to be compiled using the latest
1601 ARM ABI (aka EABI). This is only useful if you are using a user
1602 space environment that is also compiled with EABI.
1603
1604 Since there are major incompatibilities between the legacy ABI and
1605 EABI, especially with regard to structure member alignment, this
1606 option also changes the kernel syscall calling convention to
1607 disambiguate both ABIs and allow for backward compatibility support
1608 (selected with CONFIG_OABI_COMPAT).
1609
1610 To use this you need GCC version 4.0.0 or later.
1611
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001612config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001613 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001614 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001615 help
1616 This option preserves the old syscall interface along with the
1617 new (ARM EABI) one. It also provides a compatibility layer to
1618 intercept syscalls that have structure arguments which layout
1619 in memory differs between the legacy ABI and the new ARM EABI
1620 (only for non "thumb" binaries). This option adds a tiny
1621 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001622
1623 The seccomp filter system will not be available when this is
1624 selected, since there is no way yet to sensibly distinguish
1625 between calling conventions during filtering.
1626
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001627 If you know you'll be using only pure EABI user space then you
1628 can say N here. If this option is not selected and you attempt
1629 to execute a legacy ABI binary then the result will be
1630 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001631 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001632
Mel Gormaneb335752009-05-13 17:34:48 +01001633config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001634 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001635
Russell King05944d72006-11-30 20:43:51 +00001636config ARCH_SPARSEMEM_ENABLE
1637 bool
1638
Russell King07a2f732008-10-01 21:39:58 +01001639config ARCH_SPARSEMEM_DEFAULT
1640 def_bool ARCH_SPARSEMEM_ENABLE
1641
Russell King05944d72006-11-30 20:43:51 +00001642config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001643 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001644
Will Deacon7b7bf492011-05-19 13:21:14 +01001645config HAVE_ARCH_PFN_VALID
1646 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1647
Steve Capperb8cd51a2014-10-09 15:29:20 -07001648config HAVE_GENERIC_RCU_GUP
1649 def_bool y
1650 depends on ARM_LPAE
1651
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001652config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001653 bool "High Memory Support"
1654 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001655 help
1656 The address space of ARM processors is only 4 Gigabytes large
1657 and it has to accommodate user address space, kernel address
1658 space as well as some memory mapped IO. That means that, if you
1659 have a large amount of physical memory and/or IO, not all of the
1660 memory can be "permanently mapped" by the kernel. The physical
1661 memory that is not permanently mapped is called "high memory".
1662
1663 Depending on the selected kernel/user memory split, minimum
1664 vmalloc space and actual amount of RAM, you may not need this
1665 option which should result in a slightly faster kernel.
1666
1667 If unsure, say n.
1668
Russell King65cec8e2009-08-17 20:02:06 +01001669config HIGHPTE
1670 bool "Allocate 2nd-level pagetables from highmem"
1671 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001672
Jamie Iles1b8873a2010-02-02 20:25:44 +01001673config HW_PERF_EVENTS
1674 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001675 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001676 default y
1677 help
1678 Enable hardware performance counter support for perf events. If
1679 disabled, perf events will use software events only.
1680
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001681config SYS_SUPPORTS_HUGETLBFS
1682 def_bool y
1683 depends on ARM_LPAE
1684
Catalin Marinas8d962502012-07-25 14:39:26 +01001685config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1686 def_bool y
1687 depends on ARM_LPAE
1688
Steven Capper4bfab202013-07-26 14:58:22 +01001689config ARCH_WANT_GENERAL_HUGETLB
1690 def_bool y
1691
Dave Hansen3f22ab22005-06-23 00:07:43 -07001692source "mm/Kconfig"
1693
Magnus Dammc1b2d972010-07-05 10:00:11 +01001694config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001695 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1696 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001697 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001698 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001699 default "11"
1700 help
1701 The kernel memory allocator divides physically contiguous memory
1702 blocks into "zones", where each zone is a power of two number of
1703 pages. This option selects the largest power of two that the kernel
1704 keeps in the memory allocator. If you need to allocate very large
1705 blocks of physically contiguous memory, then you may need to
1706 increase this value.
1707
1708 This config option is actually maximum order plus one. For example,
1709 a value of 11 means that the largest free memory block is 2^10 pages.
1710
Linus Torvalds1da177e2005-04-16 15:20:36 -07001711config ALIGNMENT_TRAP
1712 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001713 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001714 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001715 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001717 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1719 address divisible by 4. On 32-bit ARM processors, these non-aligned
1720 fetch/store instructions will be emulated in software if you say
1721 here, which has a severe performance impact. This is necessary for
1722 correct operation of some network protocols. With an IP-only
1723 configuration it is safe to say N, otherwise say Y.
1724
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001725config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001726 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1727 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001728 default y if CPU_FEROCEON
1729 help
1730 Implement faster copy_to_user and clear_user methods for CPU
1731 cores where a 8-word STM instruction give significantly higher
1732 memory write throughput than a sequence of individual 32bit stores.
1733
1734 A possible side effect is a slight increase in scheduling latency
1735 between threads sharing the same address space if they invoke
1736 such copy operations with large buffers.
1737
1738 However, if the CPU data cache is using a write-allocate mode,
1739 this option is unlikely to provide any performance gain.
1740
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001741config SECCOMP
1742 bool
1743 prompt "Enable seccomp to safely compute untrusted bytecode"
1744 ---help---
1745 This kernel feature is useful for number crunching applications
1746 that may need to compute untrusted bytecode during their
1747 execution. By using pipes or other transports made available to
1748 the process as file descriptors supporting the read/write
1749 syscalls, it's possible to isolate those applications in
1750 their own address space using seccomp. Once seccomp is
1751 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1752 and the task is only allowed to execute a few safe syscalls
1753 defined by each seccomp mode.
1754
Stefano Stabellini06e62952013-10-15 15:47:14 +00001755config SWIOTLB
1756 def_bool y
1757
1758config IOMMU_HELPER
1759 def_bool SWIOTLB
1760
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001761config XEN_DOM0
1762 def_bool y
1763 depends on XEN
1764
1765config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001766 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001767 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001768 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001769 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001770 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001771 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001772 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001773 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001774 help
1775 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1776
Linus Torvalds1da177e2005-04-16 15:20:36 -07001777endmenu
1778
1779menu "Boot options"
1780
Grant Likely9eb8f672011-04-28 14:27:20 -06001781config USE_OF
1782 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001783 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001784 select OF
1785 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001786 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001787 help
1788 Include support for flattened device tree machine descriptions.
1789
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001790config ATAGS
1791 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1792 default y
1793 help
1794 This is the traditional way of passing data to the kernel at boot
1795 time. If you are solely relying on the flattened device tree (or
1796 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1797 to remove ATAGS support from your kernel binary. If unsure,
1798 leave this to y.
1799
1800config DEPRECATED_PARAM_STRUCT
1801 bool "Provide old way to pass kernel parameters"
1802 depends on ATAGS
1803 help
1804 This was deprecated in 2001 and announced to live on for 5 years.
1805 Some old boot loaders still use this way.
1806
Linus Torvalds1da177e2005-04-16 15:20:36 -07001807# Compressed boot loader in ROM. Yes, we really want to ask about
1808# TEXT and BSS so we preserve their values in the config files.
1809config ZBOOT_ROM_TEXT
1810 hex "Compressed ROM boot loader base address"
1811 default "0"
1812 help
1813 The physical address at which the ROM-able zImage is to be
1814 placed in the target. Platforms which normally make use of
1815 ROM-able zImage formats normally set this to a suitable
1816 value in their defconfig file.
1817
1818 If ZBOOT_ROM is not enabled, this has no effect.
1819
1820config ZBOOT_ROM_BSS
1821 hex "Compressed ROM boot loader BSS address"
1822 default "0"
1823 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001824 The base address of an area of read/write memory in the target
1825 for the ROM-able zImage which must be available while the
1826 decompressor is running. It must be large enough to hold the
1827 entire decompressed kernel plus an additional 128 KiB.
1828 Platforms which normally make use of ROM-able zImage formats
1829 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830
1831 If ZBOOT_ROM is not enabled, this has no effect.
1832
1833config ZBOOT_ROM
1834 bool "Compressed boot loader in ROM/flash"
1835 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001836 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001837 help
1838 Say Y here if you intend to execute your compressed kernel image
1839 (zImage) directly from ROM or flash. If unsure, say N.
1840
Simon Horman090ab3f2011-04-26 06:29:53 +01001841choice
1842 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001843 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001844 default ZBOOT_ROM_NONE
1845 help
1846 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001847 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001848 kernel image to an MMC or SD card and boot the kernel straight
1849 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001850 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001851 rest the kernel image to RAM.
1852
1853config ZBOOT_ROM_NONE
1854 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1855 help
1856 Do not load image from SD or MMC
1857
Simon Hormanf45b1142011-01-11 04:01:08 +01001858config ZBOOT_ROM_MMCIF
1859 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001860 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001861 Load image from MMCIF hardware block.
1862
1863config ZBOOT_ROM_SH_MOBILE_SDHI
1864 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1865 help
1866 Load image from SDHI hardware block
1867
1868endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001869
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001870config ARM_APPENDED_DTB
1871 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001872 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001873 help
1874 With this option, the boot code will look for a device tree binary
1875 (DTB) appended to zImage
1876 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1877
1878 This is meant as a backward compatibility convenience for those
1879 systems with a bootloader that can't be upgraded to accommodate
1880 the documented boot protocol using a device tree.
1881
1882 Beware that there is very little in terms of protection against
1883 this option being confused by leftover garbage in memory that might
1884 look like a DTB header after a reboot if no actual DTB is appended
1885 to zImage. Do not leave this option active in a production kernel
1886 if you don't intend to always append a DTB. Proper passing of the
1887 location into r2 of a bootloader provided DTB is always preferable
1888 to this option.
1889
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001890config ARM_ATAG_DTB_COMPAT
1891 bool "Supplement the appended DTB with traditional ATAG information"
1892 depends on ARM_APPENDED_DTB
1893 help
1894 Some old bootloaders can't be updated to a DTB capable one, yet
1895 they provide ATAGs with memory configuration, the ramdisk address,
1896 the kernel cmdline string, etc. Such information is dynamically
1897 provided by the bootloader and can't always be stored in a static
1898 DTB. To allow a device tree enabled kernel to be used with such
1899 bootloaders, this option allows zImage to extract the information
1900 from the ATAG list and store it at run time into the appended DTB.
1901
Genoud Richardd0f34a12012-06-26 16:37:59 +01001902choice
1903 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1904 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1905
1906config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1907 bool "Use bootloader kernel arguments if available"
1908 help
1909 Uses the command-line options passed by the boot loader instead of
1910 the device tree bootargs property. If the boot loader doesn't provide
1911 any, the device tree bootargs property will be used.
1912
1913config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1914 bool "Extend with bootloader kernel arguments"
1915 help
1916 The command-line arguments provided by the boot loader will be
1917 appended to the the device tree bootargs property.
1918
1919endchoice
1920
Linus Torvalds1da177e2005-04-16 15:20:36 -07001921config CMDLINE
1922 string "Default kernel command string"
1923 default ""
1924 help
1925 On some architectures (EBSA110 and CATS), there is currently no way
1926 for the boot loader to pass arguments to the kernel. For these
1927 architectures, you should supply some command-line options at build
1928 time by entering them here. As a minimum, you should specify the
1929 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1930
Victor Boivie4394c122011-05-04 17:07:55 +01001931choice
1932 prompt "Kernel command line type" if CMDLINE != ""
1933 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001934 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001935
1936config CMDLINE_FROM_BOOTLOADER
1937 bool "Use bootloader kernel arguments if available"
1938 help
1939 Uses the command-line options passed by the boot loader. If
1940 the boot loader doesn't provide any, the default kernel command
1941 string provided in CMDLINE will be used.
1942
1943config CMDLINE_EXTEND
1944 bool "Extend bootloader kernel arguments"
1945 help
1946 The command-line arguments provided by the boot loader will be
1947 appended to the default kernel command string.
1948
Alexander Holler92d20402010-02-16 19:04:53 +01001949config CMDLINE_FORCE
1950 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001951 help
1952 Always use the default kernel command string, even if the boot
1953 loader passes other arguments to the kernel.
1954 This is useful if you cannot or don't want to change the
1955 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001956endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001957
Linus Torvalds1da177e2005-04-16 15:20:36 -07001958config XIP_KERNEL
1959 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001960 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001961 help
1962 Execute-In-Place allows the kernel to run from non-volatile storage
1963 directly addressable by the CPU, such as NOR flash. This saves RAM
1964 space since the text section of the kernel is not loaded from flash
1965 to RAM. Read-write sections, such as the data section and stack,
1966 are still copied to RAM. The XIP kernel is not compressed since
1967 it has to run directly from flash, so it will take more space to
1968 store it. The flash address used to link the kernel object files,
1969 and for storing it, is configuration dependent. Therefore, if you
1970 say Y here, you must know the proper physical address where to
1971 store the kernel image depending on your own flash memory usage.
1972
1973 Also note that the make target becomes "make xipImage" rather than
1974 "make zImage" or "make Image". The final kernel binary to put in
1975 ROM memory will be arch/arm/boot/xipImage.
1976
1977 If unsure, say N.
1978
1979config XIP_PHYS_ADDR
1980 hex "XIP Kernel Physical Location"
1981 depends on XIP_KERNEL
1982 default "0x00080000"
1983 help
1984 This is the physical address in your flash memory the kernel will
1985 be linked for and stored to. This address is dependent on your
1986 own flash usage.
1987
Richard Purdiec587e4a2007-02-06 21:29:00 +01001988config KEXEC
1989 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001990 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001991 help
1992 kexec is a system call that implements the ability to shutdown your
1993 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001994 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001995 you can start any kernel with it, not just Linux.
1996
1997 It is an ongoing process to be certain the hardware in a machine
1998 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02001999 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002000
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002001config ATAGS_PROC
2002 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002003 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002004 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002005 help
2006 Should the atags used to boot the kernel be exported in an "atags"
2007 file in procfs. Useful with kexec.
2008
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002009config CRASH_DUMP
2010 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002011 help
2012 Generate crash dump after being started by kexec. This should
2013 be normally only set in special crash dump kernels which are
2014 loaded in the main kernel with kexec-tools into a specially
2015 reserved region and then later executed after a crash by
2016 kdump/kexec. The crash dump kernel must be compiled to a
2017 memory address not used by the main kernel
2018
2019 For more details see Documentation/kdump/kdump.txt
2020
Eric Miaoe69edc792010-07-05 15:56:50 +02002021config AUTO_ZRELADDR
2022 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002023 help
2024 ZRELADDR is the physical address where the decompressed kernel
2025 image will be placed. If AUTO_ZRELADDR is selected, the address
2026 will be determined at run-time by masking the current IP with
2027 0xf8000000. This assumes the zImage being placed in the first 128MB
2028 from start of memory.
2029
Linus Torvalds1da177e2005-04-16 15:20:36 -07002030endmenu
2031
Russell Kingac9d7ef2008-08-18 17:26:00 +01002032menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035
Russell Kingac9d7ef2008-08-18 17:26:00 +01002036source "drivers/cpuidle/Kconfig"
2037
2038endmenu
2039
Linus Torvalds1da177e2005-04-16 15:20:36 -07002040menu "Floating point emulation"
2041
2042comment "At least one emulation must be selected"
2043
2044config FPE_NWFPE
2045 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002046 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047 ---help---
2048 Say Y to include the NWFPE floating point emulator in the kernel.
2049 This is necessary to run most binaries. Linux does not currently
2050 support floating point hardware so you need to say Y here even if
2051 your machine has an FPA or floating point co-processor podule.
2052
2053 You may say N here if you are going to load the Acorn FPEmulator
2054 early in the bootup.
2055
2056config FPE_NWFPE_XP
2057 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002058 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059 help
2060 Say Y to include 80-bit support in the kernel floating-point
2061 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2062 Note that gcc does not generate 80-bit operations by default,
2063 so in most cases this option only enlarges the size of the
2064 floating point emulator without any good reason.
2065
2066 You almost surely want to say N here.
2067
2068config FPE_FASTFPE
2069 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002070 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071 ---help---
2072 Say Y here to include the FAST floating point emulator in the kernel.
2073 This is an experimental much faster emulator which now also has full
2074 precision for the mantissa. It does not support any exceptions.
2075 It is very simple, and approximately 3-6 times faster than NWFPE.
2076
2077 It should be sufficient for most programs. It may be not suitable
2078 for scientific calculations, but you have to check this for yourself.
2079 If you do not feel you need a faster FP emulation you should better
2080 choose NWFPE.
2081
2082config VFP
2083 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002084 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085 help
2086 Say Y to include VFP support code in the kernel. This is needed
2087 if your hardware includes a VFP unit.
2088
2089 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2090 release notes and additional status information.
2091
2092 Say N if your target does not have VFP hardware.
2093
Catalin Marinas25ebee02007-09-25 15:22:24 +01002094config VFPv3
2095 bool
2096 depends on VFP
2097 default y if CPU_V7
2098
Catalin Marinasb5872db2008-01-10 19:16:17 +01002099config NEON
2100 bool "Advanced SIMD (NEON) Extension support"
2101 depends on VFPv3 && CPU_V7
2102 help
2103 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2104 Extension.
2105
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002106config KERNEL_MODE_NEON
2107 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002108 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002109 help
2110 Say Y to include support for NEON in kernel mode.
2111
Linus Torvalds1da177e2005-04-16 15:20:36 -07002112endmenu
2113
2114menu "Userspace binary formats"
2115
2116source "fs/Kconfig.binfmt"
2117
2118config ARTHUR
2119 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002120 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002121 help
2122 Say Y here to include the kernel code necessary if you want to run
2123 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2124 experimental; if this sounds frightening, say N and sleep in peace.
2125 You can also say M here to compile this support as a module (which
2126 will be called arthur).
2127
2128endmenu
2129
2130menu "Power management options"
2131
Russell Kingeceab4a2005-11-15 11:31:41 +00002132source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133
Johannes Bergf4cb5702007-12-08 02:14:00 +01002134config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002135 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002136 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002137 def_bool y
2138
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002139config ARM_CPU_SUSPEND
2140 def_bool PM_SLEEP
2141
Sebastian Capella603fb422014-03-25 01:20:29 +01002142config ARCH_HIBERNATION_POSSIBLE
2143 bool
2144 depends on MMU
2145 default y if ARCH_SUSPEND_POSSIBLE
2146
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147endmenu
2148
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002149source "net/Kconfig"
2150
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002151source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002152
2153source "fs/Kconfig"
2154
Linus Torvalds1da177e2005-04-16 15:20:36 -07002155source "arch/arm/Kconfig.debug"
2156
2157source "security/Kconfig"
2158
2159source "crypto/Kconfig"
2160
2161source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002162
2163source "arch/arm/kvm/Kconfig"