blob: 28f320589aa75ebc98621b976f6887ef560897a8 [file] [log] [blame]
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_INTEGRATOR
324 bool "ARM Ltd. Integrator family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100325 select ARM_AMBA
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100326 select ARM_PATCH_PHYS_VIRT if MMU
panchaxarife989142013-12-02 16:58:51 +0530327 select AUTO_ZRELADDR
Linus Walleija6131632012-06-11 17:33:12 +0200328 select COMMON_CLK
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200329 select COMMON_CLK_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100330 select GENERIC_CLOCKEVENTS
Linus Walleij9904f792011-12-09 10:29:23 +0100331 select HAVE_TCM
Russell Kingc5a0adb2010-01-16 20:16:10 +0000332 select ICST
Russell Kingb1b3f492012-10-06 17:12:25 +0100333 select MULTI_IRQ_HANDLER
Russell Kingf4b8b312010-01-14 12:48:06 +0000334 select PLAT_VERSATILE
Linus Walleij695436e2012-02-26 10:46:48 +0100335 select SPARSE_IRQ
Linus Walleijd7057e12013-06-15 22:01:13 +0200336 select USE_OF
Linus Walleij2389d502012-10-31 22:04:31 +0100337 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100338 help
339 Support for ARM's Integrator platform.
340
341config ARCH_REALVIEW
342 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100343 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100344 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100345 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200346 select COMMON_CLK
347 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100348 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100349 select GPIO_PL061 if GPIOLIB
350 select ICST
351 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000352 select PLAT_VERSATILE
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100353 help
354 This enables support for ARM Ltd RealView boards.
355
356config ARCH_VERSATILE
357 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100358 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100359 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100360 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100361 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100362 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100363 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900364 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000365 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000366 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100367 select PLAT_VERSATILE_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100368 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100369 help
370 This enables support for ARM Ltd Versatile board.
371
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100372config ARCH_AT91
373 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100374 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100375 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100376 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500377 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800378 select PINCTRL
Nicolas Ferred48346c2014-11-21 16:41:50 +0100379 select PINCTRL_AT91
380 select USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100381 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100382 This enables support for systems based on Atmel
383 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100384
Russell King93e22562012-10-12 14:20:52 +0100385config ARCH_CLPS711X
386 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400387 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400388 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400389 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100390 select COMMON_CLK
391 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400392 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400393 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400394 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100395 help
396 Support for Cirrus Logic 711x/721x/731x based boards.
397
Russell King788c9702009-04-26 14:21:59 +0100398config ARCH_GEMINI
399 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100400 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200401 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100402 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200403 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100404 help
405 Support for the Cortina Systems Gemini family SoCs
406
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407config ARCH_EBSA110
408 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100409 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000410 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100411 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600412 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400413 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700414 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 help
416 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000417 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 Ethernet interface, two PCMCIA sockets, two serial ports and a
419 parallel port.
420
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100421config ARCH_EFM32
422 bool "Energy Micro efm32"
423 depends on !MMU
424 select ARCH_REQUIRE_GPIOLIB
425 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100426 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100427 select CLKSRC_OF
428 select COMMON_CLK
429 select CPU_V7M
430 select GENERIC_CLOCKEVENTS
431 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700432 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100433 select SPARSE_IRQ
434 select USE_OF
435 help
436 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
437 processors.
438
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000439config ARCH_EP93XX
440 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100441 select ARCH_HAS_HOLES_MEMORYMODEL
442 select ARCH_REQUIRE_GPIOLIB
443 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000444 select ARM_AMBA
445 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100446 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100447 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000448 help
449 This enables support for the Cirrus EP93xx series of CPUs.
450
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451config ARCH_FOOTBRIDGE
452 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000453 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000455 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200456 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600457 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400458 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000459 help
460 Support for systems based on the DC21285 companion chip
461 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100463config ARCH_NETX
464 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100465 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100466 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000467 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100468 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000469 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100470 This enables support for systems based on the Hilscher NetX Soc
471
Russell King3b938be2007-05-12 11:25:44 +0100472config ARCH_IOP13XX
473 bool "IOP13xx-based"
474 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100475 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400476 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600477 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100478 select PCI
479 select PLAT_IOP
480 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000481 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100482 help
483 Support for Intel's IOP13XX (XScale) family of processors.
484
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100485config ARCH_IOP32X
486 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100487 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100488 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000489 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200490 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600491 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100492 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100493 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000494 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100495 Support for Intel's 80219 and IOP32X (XScale) family of
496 processors.
497
498config ARCH_IOP33X
499 bool "IOP33x-based"
500 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100501 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000502 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200503 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600504 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100505 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100506 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100507 help
508 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
Russell King3b938be2007-05-12 11:25:44 +0100510config ARCH_IXP4XX
511 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100512 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500513 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100514 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100515 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100516 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000517 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100518 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100519 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100520 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600521 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200522 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100523 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100524 help
Russell King3b938be2007-05-12 11:25:44 +0100525 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100526
Saeed Bisharaedabd382009-08-06 15:12:43 +0300527config ARCH_DOVE
528 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300529 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100530 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300531 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100532 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100533 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100534 select PINCTRL
535 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200536 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300537 help
538 Support for the Marvell Dove SoC 88AP510
539
Russell King788c9702009-04-26 14:21:59 +0100540config ARCH_MV78XX0
541 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700542 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100543 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100544 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100545 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100546 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200547 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100548 help
549 Support for the following Marvell MV78xx0 series SoCs:
550 MV781x0, MV782x0.
551
552config ARCH_ORION5X
553 bool "Marvell Orion"
554 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700555 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100556 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100557 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100558 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100559 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200560 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100561 help
562 Support for the following Marvell Orion 5x series SoCs:
563 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
564 Orion-2 (5281), Orion-1-90 (6183).
565
566config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500567 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100568 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100569 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100570 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100571 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100572 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800573 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800574 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800575 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800576 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100577 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400578 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100579 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500580 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100581
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100582config ARCH_KS8695
583 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100584 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200585 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100586 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200587 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100588 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100589 help
590 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
591 System-on-Chip devices.
592
Russell King788c9702009-04-26 14:21:59 +0100593config ARCH_W90X900
594 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100595 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100596 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100597 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100598 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100599 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200600 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100601 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
602 At present, the w90x900 has been renamed nuc900, regarding
603 the ARM series product line, you can login the following
604 link address to know more.
605
606 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
607 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400608
Russell King93e22562012-10-12 14:20:52 +0100609config ARCH_LPC32XX
610 bool "NXP LPC32XX"
611 select ARCH_REQUIRE_GPIOLIB
612 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000613 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100614 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100615 select CPU_ARM926T
616 select GENERIC_CLOCKEVENTS
617 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100618 select USE_OF
619 help
620 Support for the NXP LPC32XX family of processors
621
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700623 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100624 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100625 select ARCH_MTD_XIP
626 select ARCH_REQUIRE_GPIOLIB
627 select ARM_CPU_SUSPEND if PM
628 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100629 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100630 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200631 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100632 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800633 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100634 select HAVE_IDE
635 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800636 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800637 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000638 help
eric miao2c8086a2007-09-11 19:13:17 -0700639 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600641config ARCH_MSM
642 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700643 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700644 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100645 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800646 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800647 Support for Qualcomm MSM/QSD based systems. This runs on the
648 apps processor of the MSM/QSD and depends on a shared memory
649 interface to the modem processor which runs the baseband
650 stack and controls some vital subsystems
651 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800652
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100653config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100654 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100655 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100656 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900657 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900658 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100659 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800660 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc22013-02-15 16:02:20 -0800661 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900662 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000663 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000664 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000665 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700666 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200667 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100668 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900669 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100670 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000671 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100672 Support for Renesas ARM SoC platforms using a non-multiplatform
673 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
674 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000675
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676config ARCH_RPC
677 bool "RiscPC"
678 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100679 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100680 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000681 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100682 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100683 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200684 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100685 select HAVE_PATA_PLATFORM
686 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600687 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400688 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700689 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100690 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 help
692 On the Acorn Risc-PC, Linux can support the internal IDE disk and
693 CD-ROM interface, serial and parallel port, and the floppy drive.
694
695config ARCH_SA1100
696 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100697 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700698 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100699 select ARCH_SPARSEMEM_ENABLE
700 select CLKDEV_LOOKUP
701 select CLKSRC_MMIO
702 select CPU_FREQ
703 select CPU_SA1100
704 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200705 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100706 select ISA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400707 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100708 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000709 help
710 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900712config ARCH_S3C24XX
713 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900714 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100715 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100716 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200717 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800718 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900719 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900720 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900721 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100722 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900723 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600724 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900725 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900727 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
728 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
729 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
730 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900731
Ben Dooksa08ab632008-10-21 14:06:39 +0100732config ARCH_S3C64XX
733 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900734 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200735 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100736 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100737 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100738 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200739 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900740 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900741 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800742 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900743 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900744 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900745 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100746 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700747 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100748 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100749 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100750 select S3C_DEV_NAND
751 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900752 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900753 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900754 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100755 help
756 Samsung S3C64XX series based systems
757
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100758config ARCH_DAVINCI
759 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100760 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700761 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100762 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700763 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100764 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100765 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100766 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500767 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530768 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100769 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100770 help
771 Support for TI's DaVinci platform.
772
Tony Lindgrena0694862013-01-11 11:24:20 -0800773config ARCH_OMAP1
774 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600775 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100776 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800777 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100778 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200779 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100780 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100781 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800782 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800783 select HAVE_IDE
784 select IRQ_DOMAIN
785 select NEED_MACH_IO_H if PCCARD
786 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100787 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800788 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800789
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790endchoice
791
Rob Herring387798b2012-09-06 13:41:12 -0500792menu "Multiple platform selection"
793 depends on ARCH_MULTIPLATFORM
794
795comment "CPU Core family selection"
796
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100797config ARCH_MULTI_V4
798 bool "ARMv4 based platforms (FA526)"
799 depends on !ARCH_MULTI_V6_V7
800 select ARCH_MULTI_V4_V5
801 select CPU_FA526
802
Rob Herring387798b2012-09-06 13:41:12 -0500803config ARCH_MULTI_V4T
804 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500805 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100806 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200807 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
808 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
809 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500810
811config ARCH_MULTI_V5
812 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500813 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100814 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100815 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200816 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
817 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500818
819config ARCH_MULTI_V4_V5
820 bool
821
822config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800823 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500824 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600825 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500826
827config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800828 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500829 default y
830 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100831 select CPU_V7
Rob Herring90bc8ac72014-01-31 15:32:02 -0600832 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500833
834config ARCH_MULTI_V6_V7
835 bool
Rob Herring9352b052014-01-31 15:36:10 -0600836 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500837
838config ARCH_MULTI_CPU_AUTO
839 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
840 select ARCH_MULTI_V5
841
842endmenu
843
Rob Herring05e2a3d2013-12-05 10:04:54 -0600844config ARCH_VIRT
845 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600846 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600847 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600848 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600849 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600850
Russell Kingccf50e22010-03-15 19:03:06 +0000851#
852# This is sorted alphabetically by mach-* pathname. However, plat-*
853# Kconfigs may be included either alphabetically (according to the
854# plat- suffix) or along side the corresponding mach-* source.
855#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200856source "arch/arm/mach-mvebu/Kconfig"
857
Russell King95b8f202010-01-14 11:43:54 +0000858source "arch/arm/mach-at91/Kconfig"
859
Anders Berg1d22924e2014-05-23 11:08:35 +0200860source "arch/arm/mach-axxia/Kconfig"
861
Christian Daudt8ac49e02012-11-19 09:46:10 -0800862source "arch/arm/mach-bcm/Kconfig"
863
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200864source "arch/arm/mach-berlin/Kconfig"
865
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866source "arch/arm/mach-clps711x/Kconfig"
867
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300868source "arch/arm/mach-cns3xxx/Kconfig"
869
Russell King95b8f202010-01-14 11:43:54 +0000870source "arch/arm/mach-davinci/Kconfig"
871
872source "arch/arm/mach-dove/Kconfig"
873
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000874source "arch/arm/mach-ep93xx/Kconfig"
875
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876source "arch/arm/mach-footbridge/Kconfig"
877
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200878source "arch/arm/mach-gemini/Kconfig"
879
Rob Herring387798b2012-09-06 13:41:12 -0500880source "arch/arm/mach-highbank/Kconfig"
881
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800882source "arch/arm/mach-hisi/Kconfig"
883
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884source "arch/arm/mach-integrator/Kconfig"
885
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100886source "arch/arm/mach-iop32x/Kconfig"
887
888source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889
Dan Williams285f5fa2006-12-07 02:59:39 +0100890source "arch/arm/mach-iop13xx/Kconfig"
891
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892source "arch/arm/mach-ixp4xx/Kconfig"
893
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400894source "arch/arm/mach-keystone/Kconfig"
895
Russell King95b8f202010-01-14 11:43:54 +0000896source "arch/arm/mach-ks8695/Kconfig"
897
Carlo Caione3b8f5032014-09-10 22:16:59 +0200898source "arch/arm/mach-meson/Kconfig"
899
Russell King95b8f202010-01-14 11:43:54 +0000900source "arch/arm/mach-msm/Kconfig"
901
Jonas Jensen17723fd32013-12-18 13:58:45 +0100902source "arch/arm/mach-moxart/Kconfig"
903
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200904source "arch/arm/mach-mv78xx0/Kconfig"
905
Shawn Guo3995eb82012-09-13 19:48:07 +0800906source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907
Matthias Bruggerf682a212014-05-13 01:06:13 +0200908source "arch/arm/mach-mediatek/Kconfig"
909
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800910source "arch/arm/mach-mxs/Kconfig"
911
Russell King95b8f202010-01-14 11:43:54 +0000912source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800913
Russell King95b8f202010-01-14 11:43:54 +0000914source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000915
Daniel Tang9851ca52013-06-11 18:40:17 +1000916source "arch/arm/mach-nspire/Kconfig"
917
Tony Lindgrend48af152005-07-10 19:58:17 +0100918source "arch/arm/plat-omap/Kconfig"
919
920source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921
Tony Lindgren1dbae812005-11-10 14:26:51 +0000922source "arch/arm/mach-omap2/Kconfig"
923
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400924source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400925
Rob Herring387798b2012-09-06 13:41:12 -0500926source "arch/arm/mach-picoxcell/Kconfig"
927
Russell King95b8f202010-01-14 11:43:54 +0000928source "arch/arm/mach-pxa/Kconfig"
929source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
Russell King95b8f202010-01-14 11:43:54 +0000931source "arch/arm/mach-mmp/Kconfig"
932
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600933source "arch/arm/mach-qcom/Kconfig"
934
Russell King95b8f202010-01-14 11:43:54 +0000935source "arch/arm/mach-realview/Kconfig"
936
Heiko Stuebnerd63dc0512013-06-02 23:09:41 +0200937source "arch/arm/mach-rockchip/Kconfig"
938
Russell King95b8f202010-01-14 11:43:54 +0000939source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300940
Rob Herring387798b2012-09-06 13:41:12 -0500941source "arch/arm/mach-socfpga/Kconfig"
942
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100943source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100944
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100945source "arch/arm/mach-sti/Kconfig"
946
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900947source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948
Ben Dooks431107e2010-01-26 10:11:04 +0900949source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100950
Kukjin Kim170f4e42010-02-24 16:40:44 +0900951source "arch/arm/mach-s5pv210/Kconfig"
952
Kukjin Kim83014572011-11-06 13:54:56 +0900953source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500954source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900955
Russell King882d01f2010-03-02 23:40:15 +0000956source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957
Maxime Ripard3b526342012-11-08 12:40:16 +0100958source "arch/arm/mach-sunxi/Kconfig"
959
Barry Song156a0992012-08-23 13:41:58 +0800960source "arch/arm/mach-prima2/Kconfig"
961
Erik Gillingc5f80062010-01-21 16:53:02 -0800962source "arch/arm/mach-tegra/Kconfig"
963
Russell King95b8f202010-01-14 11:43:54 +0000964source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965
Russell King95b8f202010-01-14 11:43:54 +0000966source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967
968source "arch/arm/mach-versatile/Kconfig"
969
Russell Kingceade892010-02-11 21:44:53 +0000970source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000971source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000972
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300973source "arch/arm/mach-vt8500/Kconfig"
974
wanzongshun7ec80dd2008-12-03 03:55:38 +0100975source "arch/arm/mach-w90x900/Kconfig"
976
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600977source "arch/arm/mach-zynq/Kconfig"
978
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979# Definitions to make life easier
980config ARCH_ACORN
981 bool
982
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +0100983config PLAT_IOP
984 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700985 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +0100986
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400987config PLAT_ORION
988 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100989 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100990 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100991 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200992 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400993
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200994config PLAT_ORION_LEGACY
995 bool
996 select PLAT_ORION
997
Eric Miaobd5ce432009-01-20 12:06:01 +0800998config PLAT_PXA
999 bool
1000
Russell Kingf4b8b312010-01-14 12:48:06 +00001001config PLAT_VERSATILE
1002 bool
1003
Russell Kinge3887712010-01-14 13:30:16 +00001004config ARM_TIMER_SP804
1005 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001006 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001007 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001008
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001009source "arch/arm/firmware/Kconfig"
1010
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011source arch/arm/mm/Kconfig
1012
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001013config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001014 bool "Enable iWMMXt support"
1015 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1016 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001017 help
1018 Enable support for iWMMXt context switching at run time if
1019 running on a CPU that supports it.
1020
eric miao52108642010-12-13 09:42:34 +01001021config MULTI_IRQ_HANDLER
1022 bool
1023 help
1024 Allow each machine to specify it's own IRQ handler at run time.
1025
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001026if !MMU
1027source "arch/arm/Kconfig-nommu"
1028endif
1029
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001030config PJ4B_ERRATA_4742
1031 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1032 depends on CPU_PJ4B && MACH_ARMADA_370
1033 default y
1034 help
1035 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1036 Event (WFE) IDLE states, a specific timing sensitivity exists between
1037 the retiring WFI/WFE instructions and the newly issued subsequent
1038 instructions. This sensitivity can result in a CPU hang scenario.
1039 Workaround:
1040 The software must insert either a Data Synchronization Barrier (DSB)
1041 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1042 instruction
1043
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001044config ARM_ERRATA_326103
1045 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1046 depends on CPU_V6
1047 help
1048 Executing a SWP instruction to read-only memory does not set bit 11
1049 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1050 treat the access as a read, preventing a COW from occurring and
1051 causing the faulting task to livelock.
1052
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001053config ARM_ERRATA_411920
1054 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001055 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001056 help
1057 Invalidation of the Instruction Cache operation can
1058 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1059 It does not affect the MPCore. This option enables the ARM Ltd.
1060 recommended workaround.
1061
Catalin Marinas7ce236fc2009-04-30 17:06:09 +01001062config ARM_ERRATA_430973
1063 bool "ARM errata: Stale prediction on replaced interworking branch"
1064 depends on CPU_V7
1065 help
1066 This option enables the workaround for the 430973 Cortex-A8
1067 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1068 interworking branch is replaced with another code sequence at the
1069 same virtual address, whether due to self-modifying code or virtual
1070 to physical address re-mapping, Cortex-A8 does not recover from the
1071 stale interworking branch prediction. This results in Cortex-A8
1072 executing the new code sequence in the incorrect ARM or Thumb state.
1073 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1074 and also flushes the branch target cache at every context switch.
1075 Note that setting specific bits in the ACTLR register may not be
1076 available in non-secure mode.
1077
Catalin Marinas855c5512009-04-30 17:06:15 +01001078config ARM_ERRATA_458693
1079 bool "ARM errata: Processor deadlock when a false hazard is created"
1080 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001081 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001082 help
1083 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1084 erratum. For very specific sequences of memory operations, it is
1085 possible for a hazard condition intended for a cache line to instead
1086 be incorrectly associated with a different cache line. This false
1087 hazard might then cause a processor deadlock. The workaround enables
1088 the L1 caching of the NEON accesses and disables the PLD instruction
1089 in the ACTLR register. Note that setting specific bits in the ACTLR
1090 register may not be available in non-secure mode.
1091
Catalin Marinas0516e462009-04-30 17:06:20 +01001092config ARM_ERRATA_460075
1093 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1094 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001095 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001096 help
1097 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1098 erratum. Any asynchronous access to the L2 cache may encounter a
1099 situation in which recent store transactions to the L2 cache are lost
1100 and overwritten with stale memory contents from external memory. The
1101 workaround disables the write-allocate mode for the L2 cache via the
1102 ACTLR register. Note that setting specific bits in the ACTLR register
1103 may not be available in non-secure mode.
1104
Will Deacon9f050272010-09-14 09:51:43 +01001105config ARM_ERRATA_742230
1106 bool "ARM errata: DMB operation may be faulty"
1107 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001108 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001109 help
1110 This option enables the workaround for the 742230 Cortex-A9
1111 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1112 between two write operations may not ensure the correct visibility
1113 ordering of the two writes. This workaround sets a specific bit in
1114 the diagnostic register of the Cortex-A9 which causes the DMB
1115 instruction to behave as a DSB, ensuring the correct behaviour of
1116 the two writes.
1117
Will Deacona672e992010-09-14 09:53:02 +01001118config ARM_ERRATA_742231
1119 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1120 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001121 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001122 help
1123 This option enables the workaround for the 742231 Cortex-A9
1124 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1125 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1126 accessing some data located in the same cache line, may get corrupted
1127 data due to bad handling of the address hazard when the line gets
1128 replaced from one of the CPUs at the same time as another CPU is
1129 accessing it. This workaround sets specific bits in the diagnostic
1130 register of the Cortex-A9 which reduces the linefill issuing
1131 capabilities of the processor.
1132
Jon Medhurst69155792013-06-07 10:35:35 +01001133config ARM_ERRATA_643719
1134 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1135 depends on CPU_V7 && SMP
1136 help
1137 This option enables the workaround for the 643719 Cortex-A9 (prior to
1138 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1139 register returns zero when it should return one. The workaround
1140 corrects this value, ensuring cache maintenance operations which use
1141 it behave as intended and avoiding data corruption.
1142
Will Deaconcdf357f2010-08-05 11:20:51 +01001143config ARM_ERRATA_720789
1144 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001145 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001146 help
1147 This option enables the workaround for the 720789 Cortex-A9 (prior to
1148 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1149 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1150 As a consequence of this erratum, some TLB entries which should be
1151 invalidated are not, resulting in an incoherency in the system page
1152 tables. The workaround changes the TLB flushing routines to invalidate
1153 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001154
1155config ARM_ERRATA_743622
1156 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1157 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001158 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001159 help
1160 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001161 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001162 optimisation in the Cortex-A9 Store Buffer may lead to data
1163 corruption. This workaround sets a specific bit in the diagnostic
1164 register of the Cortex-A9 which disables the Store Buffer
1165 optimisation, preventing the defect from occurring. This has no
1166 visible impact on the overall performance or power consumption of the
1167 processor.
1168
Will Deacon9a27c272011-02-18 16:36:35 +01001169config ARM_ERRATA_751472
1170 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001171 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001172 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001173 help
1174 This option enables the workaround for the 751472 Cortex-A9 (prior
1175 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1176 completion of a following broadcasted operation if the second
1177 operation is received by a CPU before the ICIALLUIS has completed,
1178 potentially leading to corrupted entries in the cache or TLB.
1179
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001180config ARM_ERRATA_754322
1181 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1182 depends on CPU_V7
1183 help
1184 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1185 r3p*) erratum. A speculative memory access may cause a page table walk
1186 which starts prior to an ASID switch but completes afterwards. This
1187 can populate the micro-TLB with a stale entry which may be hit with
1188 the new ASID. This workaround places two dsb instructions in the mm
1189 switching code so that no page table walks can cross the ASID switch.
1190
Will Deacon5dab26a2011-03-04 12:38:54 +01001191config ARM_ERRATA_754327
1192 bool "ARM errata: no automatic Store Buffer drain"
1193 depends on CPU_V7 && SMP
1194 help
1195 This option enables the workaround for the 754327 Cortex-A9 (prior to
1196 r2p0) erratum. The Store Buffer does not have any automatic draining
1197 mechanism and therefore a livelock may occur if an external agent
1198 continuously polls a memory location waiting to observe an update.
1199 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1200 written polling loops from denying visibility of updates to memory.
1201
Catalin Marinas145e10e2011-08-15 11:04:41 +01001202config ARM_ERRATA_364296
1203 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001204 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001205 help
1206 This options enables the workaround for the 364296 ARM1136
1207 r0p2 erratum (possible cache data corruption with
1208 hit-under-miss enabled). It sets the undocumented bit 31 in
1209 the auxiliary control register and the FI bit in the control
1210 register, thus disabling hit-under-miss without putting the
1211 processor into full low interrupt latency mode. ARM11MPCore
1212 is not affected.
1213
Will Deaconf630c1b2011-09-15 11:45:15 +01001214config ARM_ERRATA_764369
1215 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1216 depends on CPU_V7 && SMP
1217 help
1218 This option enables the workaround for erratum 764369
1219 affecting Cortex-A9 MPCore with two or more processors (all
1220 current revisions). Under certain timing circumstances, a data
1221 cache line maintenance operation by MVA targeting an Inner
1222 Shareable memory region may fail to proceed up to either the
1223 Point of Coherency or to the Point of Unification of the
1224 system. This workaround adds a DSB instruction before the
1225 relevant cache maintenance functions and sets a specific bit
1226 in the diagnostic control register of the SCU.
1227
Simon Horman7253b852012-09-28 02:12:45 +01001228config ARM_ERRATA_775420
1229 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1230 depends on CPU_V7
1231 help
1232 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1233 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1234 operation aborts with MMU exception, it might cause the processor
1235 to deadlock. This workaround puts DSB before executing ISB if
1236 an abort may occur on cache maintenance.
1237
Catalin Marinas93dc6882013-03-26 23:35:04 +01001238config ARM_ERRATA_798181
1239 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1240 depends on CPU_V7 && SMP
1241 help
1242 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1243 adequately shooting down all use of the old entries. This
1244 option enables the Linux kernel workaround for this erratum
1245 which sends an IPI to the CPUs that are running the same ASID
1246 as the one being invalidated.
1247
Will Deacon84b65042013-08-20 17:29:55 +01001248config ARM_ERRATA_773022
1249 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1250 depends on CPU_V7
1251 help
1252 This option enables the workaround for the 773022 Cortex-A15
1253 (up to r0p4) erratum. In certain rare sequences of code, the
1254 loop buffer may deliver incorrect instructions. This
1255 workaround disables the loop buffer to avoid the erratum.
1256
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257endmenu
1258
1259source "arch/arm/common/Kconfig"
1260
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261menu "Bus support"
1262
1263config ARM_AMBA
1264 bool
1265
1266config ISA
1267 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 help
1269 Find out whether you have ISA slots on your motherboard. ISA is the
1270 name of a bus system, i.e. the way the CPU talks to the other stuff
1271 inside your box. Other bus systems are PCI, EISA, MicroChannel
1272 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1273 newer boards don't support it. If you have ISA, say Y, otherwise N.
1274
Russell King065909b2006-01-04 15:44:16 +00001275# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276config ISA_DMA
1277 bool
Russell King065909b2006-01-04 15:44:16 +00001278 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279
Russell King065909b2006-01-04 15:44:16 +00001280# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001281config ISA_DMA_API
1282 bool
Al Viro5cae8412005-05-04 05:39:22 +01001283
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001285 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286 help
1287 Find out whether you have a PCI motherboard. PCI is the name of a
1288 bus system, i.e. the way the CPU talks to the other stuff inside
1289 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1290 VESA. If you have PCI, say Y, otherwise N.
1291
Anton Vorontsov52882172010-04-19 13:20:49 +01001292config PCI_DOMAINS
1293 bool
1294 depends on PCI
1295
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001296config PCI_NANOENGINE
1297 bool "BSE nanoEngine PCI support"
1298 depends on SA1100_NANOENGINE
1299 help
1300 Enable PCI on the BSE nanoEngine board.
1301
Matthew Wilcox36e23592007-07-10 10:54:40 -06001302config PCI_SYSCALL
1303 def_bool PCI
1304
Mike Rapoporta0113a92007-11-25 08:55:34 +01001305config PCI_HOST_ITE8152
1306 bool
1307 depends on PCI && MACH_ARMCORE
1308 default y
1309 select DMABOUNCE
1310
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001312source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313
1314source "drivers/pcmcia/Kconfig"
1315
1316endmenu
1317
1318menu "Kernel Features"
1319
Dave Martin3b556582011-12-07 15:38:04 +00001320config HAVE_SMP
1321 bool
1322 help
1323 This option should be selected by machines which have an SMP-
1324 capable CPU.
1325
1326 The only effect of this option is to make the SMP-related
1327 options available to the user for configuration.
1328
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001330 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001331 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001332 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001333 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001334 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335 help
1336 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001337 a system with only one CPU, say N. If you have a system with more
1338 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
Robert Graffham4a474152014-01-23 15:55:29 -08001340 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001342 you say Y here, the kernel will run on many, but not all,
1343 uniprocessor machines. On a uniprocessor machine, the kernel
1344 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001345
Paul Bolle395cf962011-08-15 02:02:26 +02001346 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001348 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349
1350 If you don't know what to do here, say N.
1351
Russell Kingf00ec482010-09-04 10:47:48 +01001352config SMP_ON_UP
1353 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001354 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001355 default y
1356 help
1357 SMP kernels contain instructions which fail on non-SMP processors.
1358 Enabling this option allows the kernel to modify itself to make
1359 these instructions safe. Disabling it allows about 1K of space
1360 savings.
1361
1362 If you don't know what to do here, say Y.
1363
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001364config ARM_CPU_TOPOLOGY
1365 bool "Support cpu topology definition"
1366 depends on SMP && CPU_V7
1367 default y
1368 help
1369 Support ARM cpu topology definition. The MPIDR register defines
1370 affinity between processors which is then used to describe the cpu
1371 topology of an ARM System.
1372
1373config SCHED_MC
1374 bool "Multi-core scheduler support"
1375 depends on ARM_CPU_TOPOLOGY
1376 help
1377 Multi-core scheduler support improves the CPU scheduler's decision
1378 making when dealing with multi-core CPU chips at a cost of slightly
1379 increased overhead in some places. If unsure say N here.
1380
1381config SCHED_SMT
1382 bool "SMT scheduler support"
1383 depends on ARM_CPU_TOPOLOGY
1384 help
1385 Improves the CPU scheduler's decision making when dealing with
1386 MultiThreading at a cost of slightly increased overhead in some
1387 places. If unsure say N here.
1388
Russell Kinga8cbcd92009-05-16 11:51:14 +01001389config HAVE_ARM_SCU
1390 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001391 help
1392 This option enables support for the ARM system coherency unit
1393
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001394config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001395 bool "Architected timer support"
1396 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001397 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001398 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001399 help
1400 This option enables support for the ARM architected timer
1401
Russell Kingf32f4ce2009-05-16 12:14:21 +01001402config HAVE_ARM_TWD
1403 bool
1404 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001405 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001406 help
1407 This options enables support for the ARM timer and watchdog unit
1408
Nicolas Pitree8db2882012-04-12 02:45:22 -04001409config MCPM
1410 bool "Multi-Cluster Power Management"
1411 depends on CPU_V7 && SMP
1412 help
1413 This option provides the common power management infrastructure
1414 for (multi-)cluster based systems, such as big.LITTLE based
1415 systems.
1416
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001417config MCPM_QUAD_CLUSTER
1418 bool
1419 depends on MCPM
1420 help
1421 To avoid wasting resources unnecessarily, MCPM only supports up
1422 to 2 clusters by default.
1423 Platforms with 3 or 4 clusters that use MCPM must select this
1424 option to allow the additional clusters to be managed.
1425
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001426config BIG_LITTLE
1427 bool "big.LITTLE support (Experimental)"
1428 depends on CPU_V7 && SMP
1429 select MCPM
1430 help
1431 This option enables support selections for the big.LITTLE
1432 system architecture.
1433
1434config BL_SWITCHER
1435 bool "big.LITTLE switcher support"
1436 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001437 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001438 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001439 help
1440 The big.LITTLE "switcher" provides the core functionality to
1441 transparently handle transition between a cluster of A15's
1442 and a cluster of A7's in a big.LITTLE system.
1443
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001444config BL_SWITCHER_DUMMY_IF
1445 tristate "Simple big.LITTLE switcher user interface"
1446 depends on BL_SWITCHER && DEBUG_KERNEL
1447 help
1448 This is a simple and dummy char dev interface to control
1449 the big.LITTLE switcher core code. It is meant for
1450 debugging purposes only.
1451
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001452choice
1453 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001454 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001455 default VMSPLIT_3G
1456 help
1457 Select the desired split between kernel and user memory.
1458
1459 If you are not absolutely sure what you are doing, leave this
1460 option alone!
1461
1462 config VMSPLIT_3G
1463 bool "3G/1G user/kernel split"
1464 config VMSPLIT_2G
1465 bool "2G/2G user/kernel split"
1466 config VMSPLIT_1G
1467 bool "1G/3G user/kernel split"
1468endchoice
1469
1470config PAGE_OFFSET
1471 hex
Russell King006fa252014-02-26 19:40:46 +00001472 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001473 default 0x40000000 if VMSPLIT_1G
1474 default 0x80000000 if VMSPLIT_2G
1475 default 0xC0000000
1476
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477config NR_CPUS
1478 int "Maximum number of CPUs (2-32)"
1479 range 2 32
1480 depends on SMP
1481 default "4"
1482
Russell Kinga054a812005-11-02 22:24:33 +00001483config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001484 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001485 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001486 help
1487 Say Y here to experiment with turning CPUs off and on. CPUs
1488 can be controlled through /sys/devices/system/cpu.
1489
Will Deacon2bdd4242012-12-12 19:20:52 +00001490config ARM_PSCI
1491 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1492 depends on CPU_V7
1493 help
1494 Say Y here if you want Linux to communicate with system firmware
1495 implementing the PSCI specification for CPU-centric power
1496 management operations described in ARM document number ARM DEN
1497 0022A ("Power State Coordination Interface System Software on
1498 ARM processors").
1499
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001500# The GPIO number here must be sorted by descending number. In case of
1501# a multiplatform kernel, we just want the highest value required by the
1502# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001503config ARCH_NR_GPIO
1504 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001505 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001506 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1507 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001508 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001509 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001510 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001511 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001512 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001513 default 0
1514 help
1515 Maximum number of GPIOs in the system.
1516
1517 If unsure, leave the default value.
1518
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001519source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520
Russell Kingc9218b12013-04-27 23:31:10 +01001521config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001522 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001523 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001524 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001525 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001526 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001527 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001528
1529choice
Russell King47d84682013-09-10 23:47:55 +01001530 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001531 prompt "Timer frequency"
1532
1533config HZ_100
1534 bool "100 Hz"
1535
1536config HZ_200
1537 bool "200 Hz"
1538
1539config HZ_250
1540 bool "250 Hz"
1541
1542config HZ_300
1543 bool "300 Hz"
1544
1545config HZ_500
1546 bool "500 Hz"
1547
1548config HZ_1000
1549 bool "1000 Hz"
1550
1551endchoice
1552
1553config HZ
1554 int
Russell King47d84682013-09-10 23:47:55 +01001555 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001556 default 100 if HZ_100
1557 default 200 if HZ_200
1558 default 250 if HZ_250
1559 default 300 if HZ_300
1560 default 500 if HZ_500
1561 default 1000
1562
1563config SCHED_HRTICK
1564 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001565
Catalin Marinas16c79652009-07-24 12:33:02 +01001566config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001567 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001568 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001569 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001570 select AEABI
1571 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001572 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001573 help
1574 By enabling this option, the kernel will be compiled in
1575 Thumb-2 mode. A compiler/assembler that understand the unified
1576 ARM-Thumb syntax is needed.
1577
1578 If unsure, say N.
1579
Dave Martin6f685c52011-03-03 11:41:12 +01001580config THUMB2_AVOID_R_ARM_THM_JUMP11
1581 bool "Work around buggy Thumb-2 short branch relocations in gas"
1582 depends on THUMB2_KERNEL && MODULES
1583 default y
1584 help
1585 Various binutils versions can resolve Thumb-2 branches to
1586 locally-defined, preemptible global symbols as short-range "b.n"
1587 branch instructions.
1588
1589 This is a problem, because there's no guarantee the final
1590 destination of the symbol, or any candidate locations for a
1591 trampoline, are within range of the branch. For this reason, the
1592 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1593 relocation in modules at all, and it makes little sense to add
1594 support.
1595
1596 The symptom is that the kernel fails with an "unsupported
1597 relocation" error when loading some modules.
1598
1599 Until fixed tools are available, passing
1600 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1601 code which hits this problem, at the cost of a bit of extra runtime
1602 stack usage in some cases.
1603
1604 The problem is described in more detail at:
1605 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1606
1607 Only Thumb-2 kernels are affected.
1608
1609 Unless you are sure your tools don't have this problem, say Y.
1610
Catalin Marinas0becb082009-07-24 12:32:53 +01001611config ARM_ASM_UNIFIED
1612 bool
1613
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001614config AEABI
1615 bool "Use the ARM EABI to compile the kernel"
1616 help
1617 This option allows for the kernel to be compiled using the latest
1618 ARM ABI (aka EABI). This is only useful if you are using a user
1619 space environment that is also compiled with EABI.
1620
1621 Since there are major incompatibilities between the legacy ABI and
1622 EABI, especially with regard to structure member alignment, this
1623 option also changes the kernel syscall calling convention to
1624 disambiguate both ABIs and allow for backward compatibility support
1625 (selected with CONFIG_OABI_COMPAT).
1626
1627 To use this you need GCC version 4.0.0 or later.
1628
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001629config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001630 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001631 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001632 help
1633 This option preserves the old syscall interface along with the
1634 new (ARM EABI) one. It also provides a compatibility layer to
1635 intercept syscalls that have structure arguments which layout
1636 in memory differs between the legacy ABI and the new ARM EABI
1637 (only for non "thumb" binaries). This option adds a tiny
1638 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001639
1640 The seccomp filter system will not be available when this is
1641 selected, since there is no way yet to sensibly distinguish
1642 between calling conventions during filtering.
1643
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001644 If you know you'll be using only pure EABI user space then you
1645 can say N here. If this option is not selected and you attempt
1646 to execute a legacy ABI binary then the result will be
1647 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001648 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001649
Mel Gormaneb335752009-05-13 17:34:48 +01001650config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001651 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001652
Russell King05944d72006-11-30 20:43:51 +00001653config ARCH_SPARSEMEM_ENABLE
1654 bool
1655
Russell King07a2f732008-10-01 21:39:58 +01001656config ARCH_SPARSEMEM_DEFAULT
1657 def_bool ARCH_SPARSEMEM_ENABLE
1658
Russell King05944d72006-11-30 20:43:51 +00001659config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001660 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001661
Will Deacon7b7bf492011-05-19 13:21:14 +01001662config HAVE_ARCH_PFN_VALID
1663 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1664
Steve Capperb8cd51a2014-10-09 15:29:20 -07001665config HAVE_GENERIC_RCU_GUP
1666 def_bool y
1667 depends on ARM_LPAE
1668
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001669config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001670 bool "High Memory Support"
1671 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001672 help
1673 The address space of ARM processors is only 4 Gigabytes large
1674 and it has to accommodate user address space, kernel address
1675 space as well as some memory mapped IO. That means that, if you
1676 have a large amount of physical memory and/or IO, not all of the
1677 memory can be "permanently mapped" by the kernel. The physical
1678 memory that is not permanently mapped is called "high memory".
1679
1680 Depending on the selected kernel/user memory split, minimum
1681 vmalloc space and actual amount of RAM, you may not need this
1682 option which should result in a slightly faster kernel.
1683
1684 If unsure, say n.
1685
Russell King65cec8e2009-08-17 20:02:06 +01001686config HIGHPTE
1687 bool "Allocate 2nd-level pagetables from highmem"
1688 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001689
Jamie Iles1b8873a2010-02-02 20:25:44 +01001690config HW_PERF_EVENTS
1691 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001692 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001693 default y
1694 help
1695 Enable hardware performance counter support for perf events. If
1696 disabled, perf events will use software events only.
1697
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001698config SYS_SUPPORTS_HUGETLBFS
1699 def_bool y
1700 depends on ARM_LPAE
1701
Catalin Marinas8d962502012-07-25 14:39:26 +01001702config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1703 def_bool y
1704 depends on ARM_LPAE
1705
Steven Capper4bfab202013-07-26 14:58:22 +01001706config ARCH_WANT_GENERAL_HUGETLB
1707 def_bool y
1708
Dave Hansen3f22ab22005-06-23 00:07:43 -07001709source "mm/Kconfig"
1710
Magnus Dammc1b2d972010-07-05 10:00:11 +01001711config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001712 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1713 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001714 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001715 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001716 default "11"
1717 help
1718 The kernel memory allocator divides physically contiguous memory
1719 blocks into "zones", where each zone is a power of two number of
1720 pages. This option selects the largest power of two that the kernel
1721 keeps in the memory allocator. If you need to allocate very large
1722 blocks of physically contiguous memory, then you may need to
1723 increase this value.
1724
1725 This config option is actually maximum order plus one. For example,
1726 a value of 11 means that the largest free memory block is 2^10 pages.
1727
Linus Torvalds1da177e2005-04-16 15:20:36 -07001728config ALIGNMENT_TRAP
1729 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001730 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001732 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001734 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1736 address divisible by 4. On 32-bit ARM processors, these non-aligned
1737 fetch/store instructions will be emulated in software if you say
1738 here, which has a severe performance impact. This is necessary for
1739 correct operation of some network protocols. With an IP-only
1740 configuration it is safe to say N, otherwise say Y.
1741
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001742config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001743 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1744 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001745 default y if CPU_FEROCEON
1746 help
1747 Implement faster copy_to_user and clear_user methods for CPU
1748 cores where a 8-word STM instruction give significantly higher
1749 memory write throughput than a sequence of individual 32bit stores.
1750
1751 A possible side effect is a slight increase in scheduling latency
1752 between threads sharing the same address space if they invoke
1753 such copy operations with large buffers.
1754
1755 However, if the CPU data cache is using a write-allocate mode,
1756 this option is unlikely to provide any performance gain.
1757
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001758config SECCOMP
1759 bool
1760 prompt "Enable seccomp to safely compute untrusted bytecode"
1761 ---help---
1762 This kernel feature is useful for number crunching applications
1763 that may need to compute untrusted bytecode during their
1764 execution. By using pipes or other transports made available to
1765 the process as file descriptors supporting the read/write
1766 syscalls, it's possible to isolate those applications in
1767 their own address space using seccomp. Once seccomp is
1768 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1769 and the task is only allowed to execute a few safe syscalls
1770 defined by each seccomp mode.
1771
Stefano Stabellini06e62952013-10-15 15:47:14 +00001772config SWIOTLB
1773 def_bool y
1774
1775config IOMMU_HELPER
1776 def_bool SWIOTLB
1777
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001778config XEN_DOM0
1779 def_bool y
1780 depends on XEN
1781
1782config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001783 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001784 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001785 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001786 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001787 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001788 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001789 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001790 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001791 help
1792 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1793
Linus Torvalds1da177e2005-04-16 15:20:36 -07001794endmenu
1795
1796menu "Boot options"
1797
Grant Likely9eb8f672011-04-28 14:27:20 -06001798config USE_OF
1799 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001800 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001801 select OF
1802 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001803 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001804 help
1805 Include support for flattened device tree machine descriptions.
1806
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001807config ATAGS
1808 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1809 default y
1810 help
1811 This is the traditional way of passing data to the kernel at boot
1812 time. If you are solely relying on the flattened device tree (or
1813 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1814 to remove ATAGS support from your kernel binary. If unsure,
1815 leave this to y.
1816
1817config DEPRECATED_PARAM_STRUCT
1818 bool "Provide old way to pass kernel parameters"
1819 depends on ATAGS
1820 help
1821 This was deprecated in 2001 and announced to live on for 5 years.
1822 Some old boot loaders still use this way.
1823
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824# Compressed boot loader in ROM. Yes, we really want to ask about
1825# TEXT and BSS so we preserve their values in the config files.
1826config ZBOOT_ROM_TEXT
1827 hex "Compressed ROM boot loader base address"
1828 default "0"
1829 help
1830 The physical address at which the ROM-able zImage is to be
1831 placed in the target. Platforms which normally make use of
1832 ROM-able zImage formats normally set this to a suitable
1833 value in their defconfig file.
1834
1835 If ZBOOT_ROM is not enabled, this has no effect.
1836
1837config ZBOOT_ROM_BSS
1838 hex "Compressed ROM boot loader BSS address"
1839 default "0"
1840 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001841 The base address of an area of read/write memory in the target
1842 for the ROM-able zImage which must be available while the
1843 decompressor is running. It must be large enough to hold the
1844 entire decompressed kernel plus an additional 128 KiB.
1845 Platforms which normally make use of ROM-able zImage formats
1846 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847
1848 If ZBOOT_ROM is not enabled, this has no effect.
1849
1850config ZBOOT_ROM
1851 bool "Compressed boot loader in ROM/flash"
1852 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001853 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001854 help
1855 Say Y here if you intend to execute your compressed kernel image
1856 (zImage) directly from ROM or flash. If unsure, say N.
1857
Simon Horman090ab3f2011-04-26 06:29:53 +01001858choice
1859 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001860 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001861 default ZBOOT_ROM_NONE
1862 help
1863 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001864 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001865 kernel image to an MMC or SD card and boot the kernel straight
1866 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001867 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001868 rest the kernel image to RAM.
1869
1870config ZBOOT_ROM_NONE
1871 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1872 help
1873 Do not load image from SD or MMC
1874
Simon Hormanf45b1142011-01-11 04:01:08 +01001875config ZBOOT_ROM_MMCIF
1876 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001877 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001878 Load image from MMCIF hardware block.
1879
1880config ZBOOT_ROM_SH_MOBILE_SDHI
1881 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1882 help
1883 Load image from SDHI hardware block
1884
1885endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001886
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001887config ARM_APPENDED_DTB
1888 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001889 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001890 help
1891 With this option, the boot code will look for a device tree binary
1892 (DTB) appended to zImage
1893 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1894
1895 This is meant as a backward compatibility convenience for those
1896 systems with a bootloader that can't be upgraded to accommodate
1897 the documented boot protocol using a device tree.
1898
1899 Beware that there is very little in terms of protection against
1900 this option being confused by leftover garbage in memory that might
1901 look like a DTB header after a reboot if no actual DTB is appended
1902 to zImage. Do not leave this option active in a production kernel
1903 if you don't intend to always append a DTB. Proper passing of the
1904 location into r2 of a bootloader provided DTB is always preferable
1905 to this option.
1906
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001907config ARM_ATAG_DTB_COMPAT
1908 bool "Supplement the appended DTB with traditional ATAG information"
1909 depends on ARM_APPENDED_DTB
1910 help
1911 Some old bootloaders can't be updated to a DTB capable one, yet
1912 they provide ATAGs with memory configuration, the ramdisk address,
1913 the kernel cmdline string, etc. Such information is dynamically
1914 provided by the bootloader and can't always be stored in a static
1915 DTB. To allow a device tree enabled kernel to be used with such
1916 bootloaders, this option allows zImage to extract the information
1917 from the ATAG list and store it at run time into the appended DTB.
1918
Genoud Richardd0f34a12012-06-26 16:37:59 +01001919choice
1920 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1921 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1922
1923config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1924 bool "Use bootloader kernel arguments if available"
1925 help
1926 Uses the command-line options passed by the boot loader instead of
1927 the device tree bootargs property. If the boot loader doesn't provide
1928 any, the device tree bootargs property will be used.
1929
1930config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1931 bool "Extend with bootloader kernel arguments"
1932 help
1933 The command-line arguments provided by the boot loader will be
1934 appended to the the device tree bootargs property.
1935
1936endchoice
1937
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938config CMDLINE
1939 string "Default kernel command string"
1940 default ""
1941 help
1942 On some architectures (EBSA110 and CATS), there is currently no way
1943 for the boot loader to pass arguments to the kernel. For these
1944 architectures, you should supply some command-line options at build
1945 time by entering them here. As a minimum, you should specify the
1946 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1947
Victor Boivie4394c122011-05-04 17:07:55 +01001948choice
1949 prompt "Kernel command line type" if CMDLINE != ""
1950 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001951 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001952
1953config CMDLINE_FROM_BOOTLOADER
1954 bool "Use bootloader kernel arguments if available"
1955 help
1956 Uses the command-line options passed by the boot loader. If
1957 the boot loader doesn't provide any, the default kernel command
1958 string provided in CMDLINE will be used.
1959
1960config CMDLINE_EXTEND
1961 bool "Extend bootloader kernel arguments"
1962 help
1963 The command-line arguments provided by the boot loader will be
1964 appended to the default kernel command string.
1965
Alexander Holler92d20402010-02-16 19:04:53 +01001966config CMDLINE_FORCE
1967 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001968 help
1969 Always use the default kernel command string, even if the boot
1970 loader passes other arguments to the kernel.
1971 This is useful if you cannot or don't want to change the
1972 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001973endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001974
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975config XIP_KERNEL
1976 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001977 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978 help
1979 Execute-In-Place allows the kernel to run from non-volatile storage
1980 directly addressable by the CPU, such as NOR flash. This saves RAM
1981 space since the text section of the kernel is not loaded from flash
1982 to RAM. Read-write sections, such as the data section and stack,
1983 are still copied to RAM. The XIP kernel is not compressed since
1984 it has to run directly from flash, so it will take more space to
1985 store it. The flash address used to link the kernel object files,
1986 and for storing it, is configuration dependent. Therefore, if you
1987 say Y here, you must know the proper physical address where to
1988 store the kernel image depending on your own flash memory usage.
1989
1990 Also note that the make target becomes "make xipImage" rather than
1991 "make zImage" or "make Image". The final kernel binary to put in
1992 ROM memory will be arch/arm/boot/xipImage.
1993
1994 If unsure, say N.
1995
1996config XIP_PHYS_ADDR
1997 hex "XIP Kernel Physical Location"
1998 depends on XIP_KERNEL
1999 default "0x00080000"
2000 help
2001 This is the physical address in your flash memory the kernel will
2002 be linked for and stored to. This address is dependent on your
2003 own flash usage.
2004
Richard Purdiec587e4a2007-02-06 21:29:00 +01002005config KEXEC
2006 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002007 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002008 help
2009 kexec is a system call that implements the ability to shutdown your
2010 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002011 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002012 you can start any kernel with it, not just Linux.
2013
2014 It is an ongoing process to be certain the hardware in a machine
2015 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002016 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002017
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002018config ATAGS_PROC
2019 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002020 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002021 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002022 help
2023 Should the atags used to boot the kernel be exported in an "atags"
2024 file in procfs. Useful with kexec.
2025
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002026config CRASH_DUMP
2027 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002028 help
2029 Generate crash dump after being started by kexec. This should
2030 be normally only set in special crash dump kernels which are
2031 loaded in the main kernel with kexec-tools into a specially
2032 reserved region and then later executed after a crash by
2033 kdump/kexec. The crash dump kernel must be compiled to a
2034 memory address not used by the main kernel
2035
2036 For more details see Documentation/kdump/kdump.txt
2037
Eric Miaoe69edc792010-07-05 15:56:50 +02002038config AUTO_ZRELADDR
2039 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002040 help
2041 ZRELADDR is the physical address where the decompressed kernel
2042 image will be placed. If AUTO_ZRELADDR is selected, the address
2043 will be determined at run-time by masking the current IP with
2044 0xf8000000. This assumes the zImage being placed in the first 128MB
2045 from start of memory.
2046
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047endmenu
2048
Russell Kingac9d7ef2008-08-18 17:26:00 +01002049menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052
Russell Kingac9d7ef2008-08-18 17:26:00 +01002053source "drivers/cpuidle/Kconfig"
2054
2055endmenu
2056
Linus Torvalds1da177e2005-04-16 15:20:36 -07002057menu "Floating point emulation"
2058
2059comment "At least one emulation must be selected"
2060
2061config FPE_NWFPE
2062 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002063 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002064 ---help---
2065 Say Y to include the NWFPE floating point emulator in the kernel.
2066 This is necessary to run most binaries. Linux does not currently
2067 support floating point hardware so you need to say Y here even if
2068 your machine has an FPA or floating point co-processor podule.
2069
2070 You may say N here if you are going to load the Acorn FPEmulator
2071 early in the bootup.
2072
2073config FPE_NWFPE_XP
2074 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002075 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076 help
2077 Say Y to include 80-bit support in the kernel floating-point
2078 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2079 Note that gcc does not generate 80-bit operations by default,
2080 so in most cases this option only enlarges the size of the
2081 floating point emulator without any good reason.
2082
2083 You almost surely want to say N here.
2084
2085config FPE_FASTFPE
2086 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002087 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088 ---help---
2089 Say Y here to include the FAST floating point emulator in the kernel.
2090 This is an experimental much faster emulator which now also has full
2091 precision for the mantissa. It does not support any exceptions.
2092 It is very simple, and approximately 3-6 times faster than NWFPE.
2093
2094 It should be sufficient for most programs. It may be not suitable
2095 for scientific calculations, but you have to check this for yourself.
2096 If you do not feel you need a faster FP emulation you should better
2097 choose NWFPE.
2098
2099config VFP
2100 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002101 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102 help
2103 Say Y to include VFP support code in the kernel. This is needed
2104 if your hardware includes a VFP unit.
2105
2106 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2107 release notes and additional status information.
2108
2109 Say N if your target does not have VFP hardware.
2110
Catalin Marinas25ebee02007-09-25 15:22:24 +01002111config VFPv3
2112 bool
2113 depends on VFP
2114 default y if CPU_V7
2115
Catalin Marinasb5872db2008-01-10 19:16:17 +01002116config NEON
2117 bool "Advanced SIMD (NEON) Extension support"
2118 depends on VFPv3 && CPU_V7
2119 help
2120 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2121 Extension.
2122
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002123config KERNEL_MODE_NEON
2124 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002125 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002126 help
2127 Say Y to include support for NEON in kernel mode.
2128
Linus Torvalds1da177e2005-04-16 15:20:36 -07002129endmenu
2130
2131menu "Userspace binary formats"
2132
2133source "fs/Kconfig.binfmt"
2134
2135config ARTHUR
2136 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00002137 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138 help
2139 Say Y here to include the kernel code necessary if you want to run
2140 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2141 experimental; if this sounds frightening, say N and sleep in peace.
2142 You can also say M here to compile this support as a module (which
2143 will be called arthur).
2144
2145endmenu
2146
2147menu "Power management options"
2148
Russell Kingeceab4a2005-11-15 11:31:41 +00002149source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150
Johannes Bergf4cb5702007-12-08 02:14:00 +01002151config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002152 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002153 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002154 def_bool y
2155
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002156config ARM_CPU_SUSPEND
2157 def_bool PM_SLEEP
2158
Sebastian Capella603fb422014-03-25 01:20:29 +01002159config ARCH_HIBERNATION_POSSIBLE
2160 bool
2161 depends on MMU
2162 default y if ARCH_SUSPEND_POSSIBLE
2163
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164endmenu
2165
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002166source "net/Kconfig"
2167
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002168source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169
2170source "fs/Kconfig"
2171
Linus Torvalds1da177e2005-04-16 15:20:36 -07002172source "arch/arm/Kconfig.debug"
2173
2174source "security/Kconfig"
2175
2176source "crypto/Kconfig"
2177
2178source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002179
2180source "arch/arm/kvm/Kconfig"