blob: 18f392f8b74457712f09e42eab6f8ee96197b82f [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
379 select PINCTRL_AT91 if USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100380 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100381 This enables support for systems based on Atmel
382 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100383
Russell King93e22562012-10-12 14:20:52 +0100384config ARCH_CLPS711X
385 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400386 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400387 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400388 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100389 select COMMON_CLK
390 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400391 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400392 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400393 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100394 help
395 Support for Cirrus Logic 711x/721x/731x based boards.
396
Russell King788c9702009-04-26 14:21:59 +0100397config ARCH_GEMINI
398 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100399 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200400 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100401 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200402 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100403 help
404 Support for the Cortina Systems Gemini family SoCs
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406config ARCH_EBSA110
407 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100408 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000409 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100410 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600411 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400412 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700413 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 help
415 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000416 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 Ethernet interface, two PCMCIA sockets, two serial ports and a
418 parallel port.
419
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100420config ARCH_EFM32
421 bool "Energy Micro efm32"
422 depends on !MMU
423 select ARCH_REQUIRE_GPIOLIB
424 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100425 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100426 select CLKSRC_OF
427 select COMMON_CLK
428 select CPU_V7M
429 select GENERIC_CLOCKEVENTS
430 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700431 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100432 select SPARSE_IRQ
433 select USE_OF
434 help
435 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
436 processors.
437
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000438config ARCH_EP93XX
439 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100440 select ARCH_HAS_HOLES_MEMORYMODEL
441 select ARCH_REQUIRE_GPIOLIB
442 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000443 select ARM_AMBA
444 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100445 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100446 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000447 help
448 This enables support for the Cirrus EP93xx series of CPUs.
449
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450config ARCH_FOOTBRIDGE
451 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000452 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000454 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200455 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600456 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400457 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000458 help
459 Support for systems based on the DC21285 companion chip
460 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100462config ARCH_NETX
463 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100464 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100465 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000466 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100467 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000468 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100469 This enables support for systems based on the Hilscher NetX Soc
470
Russell King3b938be2007-05-12 11:25:44 +0100471config ARCH_IOP13XX
472 bool "IOP13xx-based"
473 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100474 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400475 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600476 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100477 select PCI
478 select PLAT_IOP
479 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000480 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100481 help
482 Support for Intel's IOP13XX (XScale) family of processors.
483
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100484config ARCH_IOP32X
485 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100486 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100487 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000488 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200489 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600490 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100491 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100492 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000493 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100494 Support for Intel's 80219 and IOP32X (XScale) family of
495 processors.
496
497config ARCH_IOP33X
498 bool "IOP33x-based"
499 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100500 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000501 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200502 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600503 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100504 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100505 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100506 help
507 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508
Russell King3b938be2007-05-12 11:25:44 +0100509config ARCH_IXP4XX
510 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100511 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500512 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100513 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100514 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100515 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000516 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100517 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100518 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100519 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600520 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200521 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100522 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100523 help
Russell King3b938be2007-05-12 11:25:44 +0100524 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100525
Saeed Bisharaedabd382009-08-06 15:12:43 +0300526config ARCH_DOVE
527 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300528 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100529 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300530 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100531 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100532 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100533 select PINCTRL
534 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200535 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300536 help
537 Support for the Marvell Dove SoC 88AP510
538
Russell King788c9702009-04-26 14:21:59 +0100539config ARCH_MV78XX0
540 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700541 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100542 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100543 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100544 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100545 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200546 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100547 help
548 Support for the following Marvell MV78xx0 series SoCs:
549 MV781x0, MV782x0.
550
551config ARCH_ORION5X
552 bool "Marvell Orion"
553 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700554 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100555 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100556 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100557 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100558 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200559 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100560 help
561 Support for the following Marvell Orion 5x series SoCs:
562 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
563 Orion-2 (5281), Orion-1-90 (6183).
564
565config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500566 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100567 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100568 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100569 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100570 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100571 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800572 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800573 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800574 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800575 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100576 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400577 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100578 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500579 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100580
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100581config ARCH_KS8695
582 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100583 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200584 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100585 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200586 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100587 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100588 help
589 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
590 System-on-Chip devices.
591
Russell King788c9702009-04-26 14:21:59 +0100592config ARCH_W90X900
593 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100594 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100595 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100596 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100597 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100598 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200599 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100600 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
601 At present, the w90x900 has been renamed nuc900, regarding
602 the ARM series product line, you can login the following
603 link address to know more.
604
605 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
606 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400607
Russell King93e22562012-10-12 14:20:52 +0100608config ARCH_LPC32XX
609 bool "NXP LPC32XX"
610 select ARCH_REQUIRE_GPIOLIB
611 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000612 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100613 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100614 select CPU_ARM926T
615 select GENERIC_CLOCKEVENTS
616 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100617 select USE_OF
618 help
619 Support for the NXP LPC32XX family of processors
620
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700622 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100623 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100624 select ARCH_MTD_XIP
625 select ARCH_REQUIRE_GPIOLIB
626 select ARM_CPU_SUSPEND if PM
627 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100628 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100629 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200630 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100631 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800632 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100633 select HAVE_IDE
634 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800635 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800636 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000637 help
eric miao2c8086a2007-09-11 19:13:17 -0700638 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600640config ARCH_MSM
641 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700642 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700643 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100644 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800645 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800646 Support for Qualcomm MSM/QSD based systems. This runs on the
647 apps processor of the MSM/QSD and depends on a shared memory
648 interface to the modem processor which runs the baseband
649 stack and controls some vital subsystems
650 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800651
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100652config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100653 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100654 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100655 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900656 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900657 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100658 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800659 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800660 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900661 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000662 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000663 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000664 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700665 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200666 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100667 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900668 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100669 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000670 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100671 Support for Renesas ARM SoC platforms using a non-multiplatform
672 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
673 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000674
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675config ARCH_RPC
676 bool "RiscPC"
677 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100678 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100679 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000680 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100681 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100682 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200683 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100684 select HAVE_PATA_PLATFORM
685 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600686 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400687 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700688 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100689 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 help
691 On the Acorn Risc-PC, Linux can support the internal IDE disk and
692 CD-ROM interface, serial and parallel port, and the floppy drive.
693
694config ARCH_SA1100
695 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100696 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700697 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100698 select ARCH_SPARSEMEM_ENABLE
699 select CLKDEV_LOOKUP
700 select CLKSRC_MMIO
701 select CPU_FREQ
702 select CPU_SA1100
703 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200704 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100705 select ISA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400706 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100707 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000708 help
709 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900711config ARCH_S3C24XX
712 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900713 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100714 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100715 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200716 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800717 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900718 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900719 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900720 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100721 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900722 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600723 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900724 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900726 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
727 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
728 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
729 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900730
Ben Dooksa08ab632008-10-21 14:06:39 +0100731config ARCH_S3C64XX
732 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900733 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200734 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100735 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100736 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100737 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200738 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900739 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900740 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800741 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900742 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900743 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900744 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100745 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700746 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100747 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100748 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100749 select S3C_DEV_NAND
750 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900751 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900752 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900753 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100754 help
755 Samsung S3C64XX series based systems
756
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100757config ARCH_DAVINCI
758 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100759 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700760 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100761 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700762 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100763 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100764 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100765 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500766 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530767 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100768 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100769 help
770 Support for TI's DaVinci platform.
771
Tony Lindgrena0694862013-01-11 11:24:20 -0800772config ARCH_OMAP1
773 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600774 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100775 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800776 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100777 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200778 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100779 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100780 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800781 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800782 select HAVE_IDE
783 select IRQ_DOMAIN
784 select NEED_MACH_IO_H if PCCARD
785 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100786 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800787 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800788
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789endchoice
790
Rob Herring387798b2012-09-06 13:41:12 -0500791menu "Multiple platform selection"
792 depends on ARCH_MULTIPLATFORM
793
794comment "CPU Core family selection"
795
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100796config ARCH_MULTI_V4
797 bool "ARMv4 based platforms (FA526)"
798 depends on !ARCH_MULTI_V6_V7
799 select ARCH_MULTI_V4_V5
800 select CPU_FA526
801
Rob Herring387798b2012-09-06 13:41:12 -0500802config ARCH_MULTI_V4T
803 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500804 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100805 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200806 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
807 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
808 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500809
810config ARCH_MULTI_V5
811 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500812 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100813 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100814 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200815 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
816 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500817
818config ARCH_MULTI_V4_V5
819 bool
820
821config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800822 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500823 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600824 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500825
826config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800827 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500828 default y
829 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100830 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600831 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500832
833config ARCH_MULTI_V6_V7
834 bool
Rob Herring9352b052014-01-31 15:36:10 -0600835 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500836
837config ARCH_MULTI_CPU_AUTO
838 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
839 select ARCH_MULTI_V5
840
841endmenu
842
Rob Herring05e2a3d2013-12-05 10:04:54 -0600843config ARCH_VIRT
844 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600845 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600846 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600847 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600848 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600849
Russell Kingccf50e22010-03-15 19:03:06 +0000850#
851# This is sorted alphabetically by mach-* pathname. However, plat-*
852# Kconfigs may be included either alphabetically (according to the
853# plat- suffix) or along side the corresponding mach-* source.
854#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200855source "arch/arm/mach-mvebu/Kconfig"
856
Russell King95b8f202010-01-14 11:43:54 +0000857source "arch/arm/mach-at91/Kconfig"
858
Anders Berg1d22924e2014-05-23 11:08:35 +0200859source "arch/arm/mach-axxia/Kconfig"
860
Christian Daudt8ac49e02012-11-19 09:46:10 -0800861source "arch/arm/mach-bcm/Kconfig"
862
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200863source "arch/arm/mach-berlin/Kconfig"
864
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865source "arch/arm/mach-clps711x/Kconfig"
866
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300867source "arch/arm/mach-cns3xxx/Kconfig"
868
Russell King95b8f202010-01-14 11:43:54 +0000869source "arch/arm/mach-davinci/Kconfig"
870
871source "arch/arm/mach-dove/Kconfig"
872
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000873source "arch/arm/mach-ep93xx/Kconfig"
874
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875source "arch/arm/mach-footbridge/Kconfig"
876
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200877source "arch/arm/mach-gemini/Kconfig"
878
Rob Herring387798b2012-09-06 13:41:12 -0500879source "arch/arm/mach-highbank/Kconfig"
880
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800881source "arch/arm/mach-hisi/Kconfig"
882
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883source "arch/arm/mach-integrator/Kconfig"
884
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100885source "arch/arm/mach-iop32x/Kconfig"
886
887source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888
Dan Williams285f5fa2006-12-07 02:59:39 +0100889source "arch/arm/mach-iop13xx/Kconfig"
890
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891source "arch/arm/mach-ixp4xx/Kconfig"
892
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400893source "arch/arm/mach-keystone/Kconfig"
894
Russell King95b8f202010-01-14 11:43:54 +0000895source "arch/arm/mach-ks8695/Kconfig"
896
Carlo Caione3b8f5032014-09-10 22:16:59 +0200897source "arch/arm/mach-meson/Kconfig"
898
Russell King95b8f202010-01-14 11:43:54 +0000899source "arch/arm/mach-msm/Kconfig"
900
Jonas Jensen17723fd32013-12-18 13:58:45 +0100901source "arch/arm/mach-moxart/Kconfig"
902
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200903source "arch/arm/mach-mv78xx0/Kconfig"
904
Shawn Guo3995eb82012-09-13 19:48:07 +0800905source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906
Matthias Bruggerf682a212014-05-13 01:06:13 +0200907source "arch/arm/mach-mediatek/Kconfig"
908
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800909source "arch/arm/mach-mxs/Kconfig"
910
Russell King95b8f202010-01-14 11:43:54 +0000911source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800912
Russell King95b8f202010-01-14 11:43:54 +0000913source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000914
Daniel Tang9851ca52013-06-11 18:40:17 +1000915source "arch/arm/mach-nspire/Kconfig"
916
Tony Lindgrend48af152005-07-10 19:58:17 +0100917source "arch/arm/plat-omap/Kconfig"
918
919source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
Tony Lindgren1dbae812005-11-10 14:26:51 +0000921source "arch/arm/mach-omap2/Kconfig"
922
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400923source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400924
Rob Herring387798b2012-09-06 13:41:12 -0500925source "arch/arm/mach-picoxcell/Kconfig"
926
Russell King95b8f202010-01-14 11:43:54 +0000927source "arch/arm/mach-pxa/Kconfig"
928source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929
Russell King95b8f202010-01-14 11:43:54 +0000930source "arch/arm/mach-mmp/Kconfig"
931
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600932source "arch/arm/mach-qcom/Kconfig"
933
Russell King95b8f202010-01-14 11:43:54 +0000934source "arch/arm/mach-realview/Kconfig"
935
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200936source "arch/arm/mach-rockchip/Kconfig"
937
Russell King95b8f202010-01-14 11:43:54 +0000938source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300939
Rob Herring387798b2012-09-06 13:41:12 -0500940source "arch/arm/mach-socfpga/Kconfig"
941
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100942source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100943
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100944source "arch/arm/mach-sti/Kconfig"
945
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900946source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947
Ben Dooks431107e2010-01-26 10:11:04 +0900948source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100949
Kukjin Kim170f4e42010-02-24 16:40:44 +0900950source "arch/arm/mach-s5pv210/Kconfig"
951
Kukjin Kim83014572011-11-06 13:54:56 +0900952source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500953source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900954
Russell King882d01f2010-03-02 23:40:15 +0000955source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
Maxime Ripard3b526342012-11-08 12:40:16 +0100957source "arch/arm/mach-sunxi/Kconfig"
958
Barry Song156a0992012-08-23 13:41:58 +0800959source "arch/arm/mach-prima2/Kconfig"
960
Erik Gillingc5f80062010-01-21 16:53:02 -0800961source "arch/arm/mach-tegra/Kconfig"
962
Russell King95b8f202010-01-14 11:43:54 +0000963source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964
Russell King95b8f202010-01-14 11:43:54 +0000965source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966
967source "arch/arm/mach-versatile/Kconfig"
968
Russell Kingceade892010-02-11 21:44:53 +0000969source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000970source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000971
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300972source "arch/arm/mach-vt8500/Kconfig"
973
wanzongshun7ec80dd2008-12-03 03:55:38 +0100974source "arch/arm/mach-w90x900/Kconfig"
975
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600976source "arch/arm/mach-zynq/Kconfig"
977
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978# Definitions to make life easier
979config ARCH_ACORN
980 bool
981
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100982config PLAT_IOP
983 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700984 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100985
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400986config PLAT_ORION
987 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100988 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100989 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100990 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200991 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400992
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200993config PLAT_ORION_LEGACY
994 bool
995 select PLAT_ORION
996
Eric Miaobd5ce432009-01-20 12:06:01 +0800997config PLAT_PXA
998 bool
999
Russell Kingf4b8b312010-01-14 12:48:06 +00001000config PLAT_VERSATILE
1001 bool
1002
Russell Kinge3887712010-01-14 13:30:16 +00001003config ARM_TIMER_SP804
1004 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001005 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001006 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001007
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001008source "arch/arm/firmware/Kconfig"
1009
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010source arch/arm/mm/Kconfig
1011
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001012config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001013 bool "Enable iWMMXt support"
1014 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1015 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001016 help
1017 Enable support for iWMMXt context switching at run time if
1018 running on a CPU that supports it.
1019
eric miao52108642010-12-13 09:42:34 +01001020config MULTI_IRQ_HANDLER
1021 bool
1022 help
1023 Allow each machine to specify it's own IRQ handler at run time.
1024
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001025if !MMU
1026source "arch/arm/Kconfig-nommu"
1027endif
1028
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001029config PJ4B_ERRATA_4742
1030 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1031 depends on CPU_PJ4B && MACH_ARMADA_370
1032 default y
1033 help
1034 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1035 Event (WFE) IDLE states, a specific timing sensitivity exists between
1036 the retiring WFI/WFE instructions and the newly issued subsequent
1037 instructions. This sensitivity can result in a CPU hang scenario.
1038 Workaround:
1039 The software must insert either a Data Synchronization Barrier (DSB)
1040 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1041 instruction
1042
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001043config ARM_ERRATA_326103
1044 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1045 depends on CPU_V6
1046 help
1047 Executing a SWP instruction to read-only memory does not set bit 11
1048 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1049 treat the access as a read, preventing a COW from occurring and
1050 causing the faulting task to livelock.
1051
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001052config ARM_ERRATA_411920
1053 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001054 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001055 help
1056 Invalidation of the Instruction Cache operation can
1057 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1058 It does not affect the MPCore. This option enables the ARM Ltd.
1059 recommended workaround.
1060
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001061config ARM_ERRATA_430973
1062 bool "ARM errata: Stale prediction on replaced interworking branch"
1063 depends on CPU_V7
1064 help
1065 This option enables the workaround for the 430973 Cortex-A8
1066 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1067 interworking branch is replaced with another code sequence at the
1068 same virtual address, whether due to self-modifying code or virtual
1069 to physical address re-mapping, Cortex-A8 does not recover from the
1070 stale interworking branch prediction. This results in Cortex-A8
1071 executing the new code sequence in the incorrect ARM or Thumb state.
1072 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1073 and also flushes the branch target cache at every context switch.
1074 Note that setting specific bits in the ACTLR register may not be
1075 available in non-secure mode.
1076
Catalin Marinas855c5512009-04-30 17:06:15 +01001077config ARM_ERRATA_458693
1078 bool "ARM errata: Processor deadlock when a false hazard is created"
1079 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001080 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001081 help
1082 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1083 erratum. For very specific sequences of memory operations, it is
1084 possible for a hazard condition intended for a cache line to instead
1085 be incorrectly associated with a different cache line. This false
1086 hazard might then cause a processor deadlock. The workaround enables
1087 the L1 caching of the NEON accesses and disables the PLD instruction
1088 in the ACTLR register. Note that setting specific bits in the ACTLR
1089 register may not be available in non-secure mode.
1090
Catalin Marinas0516e462009-04-30 17:06:20 +01001091config ARM_ERRATA_460075
1092 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1093 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001094 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001095 help
1096 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1097 erratum. Any asynchronous access to the L2 cache may encounter a
1098 situation in which recent store transactions to the L2 cache are lost
1099 and overwritten with stale memory contents from external memory. The
1100 workaround disables the write-allocate mode for the L2 cache via the
1101 ACTLR register. Note that setting specific bits in the ACTLR register
1102 may not be available in non-secure mode.
1103
Will Deacon9f050272010-09-14 09:51:43 +01001104config ARM_ERRATA_742230
1105 bool "ARM errata: DMB operation may be faulty"
1106 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001107 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001108 help
1109 This option enables the workaround for the 742230 Cortex-A9
1110 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1111 between two write operations may not ensure the correct visibility
1112 ordering of the two writes. This workaround sets a specific bit in
1113 the diagnostic register of the Cortex-A9 which causes the DMB
1114 instruction to behave as a DSB, ensuring the correct behaviour of
1115 the two writes.
1116
Will Deacona672e992010-09-14 09:53:02 +01001117config ARM_ERRATA_742231
1118 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1119 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001120 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001121 help
1122 This option enables the workaround for the 742231 Cortex-A9
1123 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1124 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1125 accessing some data located in the same cache line, may get corrupted
1126 data due to bad handling of the address hazard when the line gets
1127 replaced from one of the CPUs at the same time as another CPU is
1128 accessing it. This workaround sets specific bits in the diagnostic
1129 register of the Cortex-A9 which reduces the linefill issuing
1130 capabilities of the processor.
1131
Jon Medhurst69155792013-06-07 10:35:35 +01001132config ARM_ERRATA_643719
1133 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1134 depends on CPU_V7 && SMP
1135 help
1136 This option enables the workaround for the 643719 Cortex-A9 (prior to
1137 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1138 register returns zero when it should return one. The workaround
1139 corrects this value, ensuring cache maintenance operations which use
1140 it behave as intended and avoiding data corruption.
1141
Will Deaconcdf357f2010-08-05 11:20:51 +01001142config ARM_ERRATA_720789
1143 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001144 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001145 help
1146 This option enables the workaround for the 720789 Cortex-A9 (prior to
1147 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1148 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1149 As a consequence of this erratum, some TLB entries which should be
1150 invalidated are not, resulting in an incoherency in the system page
1151 tables. The workaround changes the TLB flushing routines to invalidate
1152 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001153
1154config ARM_ERRATA_743622
1155 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1156 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001157 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001158 help
1159 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001160 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001161 optimisation in the Cortex-A9 Store Buffer may lead to data
1162 corruption. This workaround sets a specific bit in the diagnostic
1163 register of the Cortex-A9 which disables the Store Buffer
1164 optimisation, preventing the defect from occurring. This has no
1165 visible impact on the overall performance or power consumption of the
1166 processor.
1167
Will Deacon9a27c272011-02-18 16:36:35 +01001168config ARM_ERRATA_751472
1169 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001170 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001171 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001172 help
1173 This option enables the workaround for the 751472 Cortex-A9 (prior
1174 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1175 completion of a following broadcasted operation if the second
1176 operation is received by a CPU before the ICIALLUIS has completed,
1177 potentially leading to corrupted entries in the cache or TLB.
1178
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001179config ARM_ERRATA_754322
1180 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1181 depends on CPU_V7
1182 help
1183 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1184 r3p*) erratum. A speculative memory access may cause a page table walk
1185 which starts prior to an ASID switch but completes afterwards. This
1186 can populate the micro-TLB with a stale entry which may be hit with
1187 the new ASID. This workaround places two dsb instructions in the mm
1188 switching code so that no page table walks can cross the ASID switch.
1189
Will Deacon5dab26af2011-03-04 12:38:54 +01001190config ARM_ERRATA_754327
1191 bool "ARM errata: no automatic Store Buffer drain"
1192 depends on CPU_V7 && SMP
1193 help
1194 This option enables the workaround for the 754327 Cortex-A9 (prior to
1195 r2p0) erratum. The Store Buffer does not have any automatic draining
1196 mechanism and therefore a livelock may occur if an external agent
1197 continuously polls a memory location waiting to observe an update.
1198 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1199 written polling loops from denying visibility of updates to memory.
1200
Catalin Marinas145e10e2011-08-15 11:04:41 +01001201config ARM_ERRATA_364296
1202 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001203 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001204 help
1205 This options enables the workaround for the 364296 ARM1136
1206 r0p2 erratum (possible cache data corruption with
1207 hit-under-miss enabled). It sets the undocumented bit 31 in
1208 the auxiliary control register and the FI bit in the control
1209 register, thus disabling hit-under-miss without putting the
1210 processor into full low interrupt latency mode. ARM11MPCore
1211 is not affected.
1212
Will Deaconf630c1b2011-09-15 11:45:15 +01001213config ARM_ERRATA_764369
1214 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1215 depends on CPU_V7 && SMP
1216 help
1217 This option enables the workaround for erratum 764369
1218 affecting Cortex-A9 MPCore with two or more processors (all
1219 current revisions). Under certain timing circumstances, a data
1220 cache line maintenance operation by MVA targeting an Inner
1221 Shareable memory region may fail to proceed up to either the
1222 Point of Coherency or to the Point of Unification of the
1223 system. This workaround adds a DSB instruction before the
1224 relevant cache maintenance functions and sets a specific bit
1225 in the diagnostic control register of the SCU.
1226
Simon Horman7253b852012-09-28 02:12:45 +01001227config ARM_ERRATA_775420
1228 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1229 depends on CPU_V7
1230 help
1231 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1232 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1233 operation aborts with MMU exception, it might cause the processor
1234 to deadlock. This workaround puts DSB before executing ISB if
1235 an abort may occur on cache maintenance.
1236
Catalin Marinas93dc6882013-03-26 23:35:04 +01001237config ARM_ERRATA_798181
1238 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1239 depends on CPU_V7 && SMP
1240 help
1241 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1242 adequately shooting down all use of the old entries. This
1243 option enables the Linux kernel workaround for this erratum
1244 which sends an IPI to the CPUs that are running the same ASID
1245 as the one being invalidated.
1246
Will Deacon84b65042013-08-20 17:29:55 +01001247config ARM_ERRATA_773022
1248 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1249 depends on CPU_V7
1250 help
1251 This option enables the workaround for the 773022 Cortex-A15
1252 (up to r0p4) erratum. In certain rare sequences of code, the
1253 loop buffer may deliver incorrect instructions. This
1254 workaround disables the loop buffer to avoid the erratum.
1255
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256endmenu
1257
1258source "arch/arm/common/Kconfig"
1259
Linus Torvalds1da177e2005-04-16 15:20:36 -07001260menu "Bus support"
1261
1262config ARM_AMBA
1263 bool
1264
1265config ISA
1266 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 help
1268 Find out whether you have ISA slots on your motherboard. ISA is the
1269 name of a bus system, i.e. the way the CPU talks to the other stuff
1270 inside your box. Other bus systems are PCI, EISA, MicroChannel
1271 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1272 newer boards don't support it. If you have ISA, say Y, otherwise N.
1273
Russell King065909b2006-01-04 15:44:16 +00001274# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275config ISA_DMA
1276 bool
Russell King065909b2006-01-04 15:44:16 +00001277 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278
Russell King065909b2006-01-04 15:44:16 +00001279# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001280config ISA_DMA_API
1281 bool
Al Viro5cae8412005-05-04 05:39:22 +01001282
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001284 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 help
1286 Find out whether you have a PCI motherboard. PCI is the name of a
1287 bus system, i.e. the way the CPU talks to the other stuff inside
1288 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1289 VESA. If you have PCI, say Y, otherwise N.
1290
Anton Vorontsov52882172010-04-19 13:20:49 +01001291config PCI_DOMAINS
1292 bool
1293 depends on PCI
1294
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001295config PCI_NANOENGINE
1296 bool "BSE nanoEngine PCI support"
1297 depends on SA1100_NANOENGINE
1298 help
1299 Enable PCI on the BSE nanoEngine board.
1300
Matthew Wilcox36e23592007-07-10 10:54:40 -06001301config PCI_SYSCALL
1302 def_bool PCI
1303
Mike Rapoporta0113a92007-11-25 08:55:34 +01001304config PCI_HOST_ITE8152
1305 bool
1306 depends on PCI && MACH_ARMCORE
1307 default y
1308 select DMABOUNCE
1309
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001311source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312
1313source "drivers/pcmcia/Kconfig"
1314
1315endmenu
1316
1317menu "Kernel Features"
1318
Dave Martin3b556582011-12-07 15:38:04 +00001319config HAVE_SMP
1320 bool
1321 help
1322 This option should be selected by machines which have an SMP-
1323 capable CPU.
1324
1325 The only effect of this option is to make the SMP-related
1326 options available to the user for configuration.
1327
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001329 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001330 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001331 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001332 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001333 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334 help
1335 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001336 a system with only one CPU, say N. If you have a system with more
1337 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338
Robert Graffham4a474152014-01-23 15:55:29 -08001339 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001341 you say Y here, the kernel will run on many, but not all,
1342 uniprocessor machines. On a uniprocessor machine, the kernel
1343 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344
Paul Bolle395cf962011-08-15 02:02:26 +02001345 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001347 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348
1349 If you don't know what to do here, say N.
1350
Russell Kingf00ec482010-09-04 10:47:48 +01001351config SMP_ON_UP
1352 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001353 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001354 default y
1355 help
1356 SMP kernels contain instructions which fail on non-SMP processors.
1357 Enabling this option allows the kernel to modify itself to make
1358 these instructions safe. Disabling it allows about 1K of space
1359 savings.
1360
1361 If you don't know what to do here, say Y.
1362
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001363config ARM_CPU_TOPOLOGY
1364 bool "Support cpu topology definition"
1365 depends on SMP && CPU_V7
1366 default y
1367 help
1368 Support ARM cpu topology definition. The MPIDR register defines
1369 affinity between processors which is then used to describe the cpu
1370 topology of an ARM System.
1371
1372config SCHED_MC
1373 bool "Multi-core scheduler support"
1374 depends on ARM_CPU_TOPOLOGY
1375 help
1376 Multi-core scheduler support improves the CPU scheduler's decision
1377 making when dealing with multi-core CPU chips at a cost of slightly
1378 increased overhead in some places. If unsure say N here.
1379
1380config SCHED_SMT
1381 bool "SMT scheduler support"
1382 depends on ARM_CPU_TOPOLOGY
1383 help
1384 Improves the CPU scheduler's decision making when dealing with
1385 MultiThreading at a cost of slightly increased overhead in some
1386 places. If unsure say N here.
1387
Russell Kinga8cbcd92009-05-16 11:51:14 +01001388config HAVE_ARM_SCU
1389 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001390 help
1391 This option enables support for the ARM system coherency unit
1392
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001393config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001394 bool "Architected timer support"
1395 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001396 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001397 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001398 help
1399 This option enables support for the ARM architected timer
1400
Russell Kingf32f4ce2009-05-16 12:14:21 +01001401config HAVE_ARM_TWD
1402 bool
1403 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001404 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001405 help
1406 This options enables support for the ARM timer and watchdog unit
1407
Nicolas Pitree8db2882012-04-12 02:45:22 -04001408config MCPM
1409 bool "Multi-Cluster Power Management"
1410 depends on CPU_V7 && SMP
1411 help
1412 This option provides the common power management infrastructure
1413 for (multi-)cluster based systems, such as big.LITTLE based
1414 systems.
1415
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001416config MCPM_QUAD_CLUSTER
1417 bool
1418 depends on MCPM
1419 help
1420 To avoid wasting resources unnecessarily, MCPM only supports up
1421 to 2 clusters by default.
1422 Platforms with 3 or 4 clusters that use MCPM must select this
1423 option to allow the additional clusters to be managed.
1424
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001425config BIG_LITTLE
1426 bool "big.LITTLE support (Experimental)"
1427 depends on CPU_V7 && SMP
1428 select MCPM
1429 help
1430 This option enables support selections for the big.LITTLE
1431 system architecture.
1432
1433config BL_SWITCHER
1434 bool "big.LITTLE switcher support"
1435 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001436 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001437 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001438 help
1439 The big.LITTLE "switcher" provides the core functionality to
1440 transparently handle transition between a cluster of A15's
1441 and a cluster of A7's in a big.LITTLE system.
1442
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001443config BL_SWITCHER_DUMMY_IF
1444 tristate "Simple big.LITTLE switcher user interface"
1445 depends on BL_SWITCHER && DEBUG_KERNEL
1446 help
1447 This is a simple and dummy char dev interface to control
1448 the big.LITTLE switcher core code. It is meant for
1449 debugging purposes only.
1450
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001451choice
1452 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001453 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001454 default VMSPLIT_3G
1455 help
1456 Select the desired split between kernel and user memory.
1457
1458 If you are not absolutely sure what you are doing, leave this
1459 option alone!
1460
1461 config VMSPLIT_3G
1462 bool "3G/1G user/kernel split"
1463 config VMSPLIT_2G
1464 bool "2G/2G user/kernel split"
1465 config VMSPLIT_1G
1466 bool "1G/3G user/kernel split"
1467endchoice
1468
1469config PAGE_OFFSET
1470 hex
Russell King006fa252014-02-26 19:40:46 +00001471 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001472 default 0x40000000 if VMSPLIT_1G
1473 default 0x80000000 if VMSPLIT_2G
1474 default 0xC0000000
1475
Linus Torvalds1da177e2005-04-16 15:20:36 -07001476config NR_CPUS
1477 int "Maximum number of CPUs (2-32)"
1478 range 2 32
1479 depends on SMP
1480 default "4"
1481
Russell Kinga054a812005-11-02 22:24:33 +00001482config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001483 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001484 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001485 help
1486 Say Y here to experiment with turning CPUs off and on. CPUs
1487 can be controlled through /sys/devices/system/cpu.
1488
Will Deacon2bdd4242012-12-12 19:20:52 +00001489config ARM_PSCI
1490 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1491 depends on CPU_V7
1492 help
1493 Say Y here if you want Linux to communicate with system firmware
1494 implementing the PSCI specification for CPU-centric power
1495 management operations described in ARM document number ARM DEN
1496 0022A ("Power State Coordination Interface System Software on
1497 ARM processors").
1498
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001499# The GPIO number here must be sorted by descending number. In case of
1500# a multiplatform kernel, we just want the highest value required by the
1501# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001502config ARCH_NR_GPIO
1503 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001504 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001505 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1506 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001507 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001508 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001509 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001510 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001511 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001512 default 0
1513 help
1514 Maximum number of GPIOs in the system.
1515
1516 If unsure, leave the default value.
1517
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001518source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519
Russell Kingc9218b12013-04-27 23:31:10 +01001520config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001521 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001522 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001523 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001524 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001525 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001526 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001527
1528choice
Russell King47d84682013-09-10 23:47:55 +01001529 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001530 prompt "Timer frequency"
1531
1532config HZ_100
1533 bool "100 Hz"
1534
1535config HZ_200
1536 bool "200 Hz"
1537
1538config HZ_250
1539 bool "250 Hz"
1540
1541config HZ_300
1542 bool "300 Hz"
1543
1544config HZ_500
1545 bool "500 Hz"
1546
1547config HZ_1000
1548 bool "1000 Hz"
1549
1550endchoice
1551
1552config HZ
1553 int
Russell King47d84682013-09-10 23:47:55 +01001554 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001555 default 100 if HZ_100
1556 default 200 if HZ_200
1557 default 250 if HZ_250
1558 default 300 if HZ_300
1559 default 500 if HZ_500
1560 default 1000
1561
1562config SCHED_HRTICK
1563 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001564
Catalin Marinas16c79652009-07-24 12:33:02 +01001565config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001566 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001567 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001568 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001569 select AEABI
1570 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001571 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001572 help
1573 By enabling this option, the kernel will be compiled in
1574 Thumb-2 mode. A compiler/assembler that understand the unified
1575 ARM-Thumb syntax is needed.
1576
1577 If unsure, say N.
1578
Dave Martin6f685c52011-03-03 11:41:12 +01001579config THUMB2_AVOID_R_ARM_THM_JUMP11
1580 bool "Work around buggy Thumb-2 short branch relocations in gas"
1581 depends on THUMB2_KERNEL && MODULES
1582 default y
1583 help
1584 Various binutils versions can resolve Thumb-2 branches to
1585 locally-defined, preemptible global symbols as short-range "b.n"
1586 branch instructions.
1587
1588 This is a problem, because there's no guarantee the final
1589 destination of the symbol, or any candidate locations for a
1590 trampoline, are within range of the branch. For this reason, the
1591 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1592 relocation in modules at all, and it makes little sense to add
1593 support.
1594
1595 The symptom is that the kernel fails with an "unsupported
1596 relocation" error when loading some modules.
1597
1598 Until fixed tools are available, passing
1599 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1600 code which hits this problem, at the cost of a bit of extra runtime
1601 stack usage in some cases.
1602
1603 The problem is described in more detail at:
1604 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1605
1606 Only Thumb-2 kernels are affected.
1607
1608 Unless you are sure your tools don't have this problem, say Y.
1609
Catalin Marinas0becb082009-07-24 12:32:53 +01001610config ARM_ASM_UNIFIED
1611 bool
1612
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001613config AEABI
1614 bool "Use the ARM EABI to compile the kernel"
1615 help
1616 This option allows for the kernel to be compiled using the latest
1617 ARM ABI (aka EABI). This is only useful if you are using a user
1618 space environment that is also compiled with EABI.
1619
1620 Since there are major incompatibilities between the legacy ABI and
1621 EABI, especially with regard to structure member alignment, this
1622 option also changes the kernel syscall calling convention to
1623 disambiguate both ABIs and allow for backward compatibility support
1624 (selected with CONFIG_OABI_COMPAT).
1625
1626 To use this you need GCC version 4.0.0 or later.
1627
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001628config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001629 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001630 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001631 help
1632 This option preserves the old syscall interface along with the
1633 new (ARM EABI) one. It also provides a compatibility layer to
1634 intercept syscalls that have structure arguments which layout
1635 in memory differs between the legacy ABI and the new ARM EABI
1636 (only for non "thumb" binaries). This option adds a tiny
1637 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001638
1639 The seccomp filter system will not be available when this is
1640 selected, since there is no way yet to sensibly distinguish
1641 between calling conventions during filtering.
1642
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001643 If you know you'll be using only pure EABI user space then you
1644 can say N here. If this option is not selected and you attempt
1645 to execute a legacy ABI binary then the result will be
1646 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001647 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001648
Mel Gormaneb335752009-05-13 17:34:48 +01001649config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001650 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001651
Russell King05944d72006-11-30 20:43:51 +00001652config ARCH_SPARSEMEM_ENABLE
1653 bool
1654
Russell King07a2f732008-10-01 21:39:58 +01001655config ARCH_SPARSEMEM_DEFAULT
1656 def_bool ARCH_SPARSEMEM_ENABLE
1657
Russell King05944d72006-11-30 20:43:51 +00001658config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001659 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001660
Will Deacon7b7bf492011-05-19 13:21:14 +01001661config HAVE_ARCH_PFN_VALID
1662 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1663
Steve Capperb8cd51a2014-10-09 15:29:20 -07001664config HAVE_GENERIC_RCU_GUP
1665 def_bool y
1666 depends on ARM_LPAE
1667
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001668config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001669 bool "High Memory Support"
1670 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001671 help
1672 The address space of ARM processors is only 4 Gigabytes large
1673 and it has to accommodate user address space, kernel address
1674 space as well as some memory mapped IO. That means that, if you
1675 have a large amount of physical memory and/or IO, not all of the
1676 memory can be "permanently mapped" by the kernel. The physical
1677 memory that is not permanently mapped is called "high memory".
1678
1679 Depending on the selected kernel/user memory split, minimum
1680 vmalloc space and actual amount of RAM, you may not need this
1681 option which should result in a slightly faster kernel.
1682
1683 If unsure, say n.
1684
Russell King65cec8e2009-08-17 20:02:06 +01001685config HIGHPTE
1686 bool "Allocate 2nd-level pagetables from highmem"
1687 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001688
Jamie Iles1b8873a2010-02-02 20:25:44 +01001689config HW_PERF_EVENTS
1690 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001691 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001692 default y
1693 help
1694 Enable hardware performance counter support for perf events. If
1695 disabled, perf events will use software events only.
1696
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001697config SYS_SUPPORTS_HUGETLBFS
1698 def_bool y
1699 depends on ARM_LPAE
1700
Catalin Marinas8d962502012-07-25 14:39:26 +01001701config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1702 def_bool y
1703 depends on ARM_LPAE
1704
Steven Capper4bfab202013-07-26 14:58:22 +01001705config ARCH_WANT_GENERAL_HUGETLB
1706 def_bool y
1707
Dave Hansen3f22ab22005-06-23 00:07:43 -07001708source "mm/Kconfig"
1709
Magnus Dammc1b2d972010-07-05 10:00:11 +01001710config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001711 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1712 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001713 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001714 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001715 default "11"
1716 help
1717 The kernel memory allocator divides physically contiguous memory
1718 blocks into "zones", where each zone is a power of two number of
1719 pages. This option selects the largest power of two that the kernel
1720 keeps in the memory allocator. If you need to allocate very large
1721 blocks of physically contiguous memory, then you may need to
1722 increase this value.
1723
1724 This config option is actually maximum order plus one. For example,
1725 a value of 11 means that the largest free memory block is 2^10 pages.
1726
Linus Torvalds1da177e2005-04-16 15:20:36 -07001727config ALIGNMENT_TRAP
1728 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001729 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001730 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001731 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001732 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001733 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1735 address divisible by 4. On 32-bit ARM processors, these non-aligned
1736 fetch/store instructions will be emulated in software if you say
1737 here, which has a severe performance impact. This is necessary for
1738 correct operation of some network protocols. With an IP-only
1739 configuration it is safe to say N, otherwise say Y.
1740
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001741config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001742 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1743 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001744 default y if CPU_FEROCEON
1745 help
1746 Implement faster copy_to_user and clear_user methods for CPU
1747 cores where a 8-word STM instruction give significantly higher
1748 memory write throughput than a sequence of individual 32bit stores.
1749
1750 A possible side effect is a slight increase in scheduling latency
1751 between threads sharing the same address space if they invoke
1752 such copy operations with large buffers.
1753
1754 However, if the CPU data cache is using a write-allocate mode,
1755 this option is unlikely to provide any performance gain.
1756
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001757config SECCOMP
1758 bool
1759 prompt "Enable seccomp to safely compute untrusted bytecode"
1760 ---help---
1761 This kernel feature is useful for number crunching applications
1762 that may need to compute untrusted bytecode during their
1763 execution. By using pipes or other transports made available to
1764 the process as file descriptors supporting the read/write
1765 syscalls, it's possible to isolate those applications in
1766 their own address space using seccomp. Once seccomp is
1767 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1768 and the task is only allowed to execute a few safe syscalls
1769 defined by each seccomp mode.
1770
Stefano Stabellini06e62952013-10-15 15:47:14 +00001771config SWIOTLB
1772 def_bool y
1773
1774config IOMMU_HELPER
1775 def_bool SWIOTLB
1776
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001777config XEN_DOM0
1778 def_bool y
1779 depends on XEN
1780
1781config XEN
1782 bool "Xen guest support on ARM (EXPERIMENTAL)"
Ian Campbell85323a92013-03-07 07:17:25 +00001783 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001784 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001785 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001786 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001787 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001788 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001789 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001790 help
1791 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1792
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793endmenu
1794
1795menu "Boot options"
1796
Grant Likely9eb8f672011-04-28 14:27:20 -06001797config USE_OF
1798 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001799 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001800 select OF
1801 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001802 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001803 help
1804 Include support for flattened device tree machine descriptions.
1805
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001806config ATAGS
1807 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1808 default y
1809 help
1810 This is the traditional way of passing data to the kernel at boot
1811 time. If you are solely relying on the flattened device tree (or
1812 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1813 to remove ATAGS support from your kernel binary. If unsure,
1814 leave this to y.
1815
1816config DEPRECATED_PARAM_STRUCT
1817 bool "Provide old way to pass kernel parameters"
1818 depends on ATAGS
1819 help
1820 This was deprecated in 2001 and announced to live on for 5 years.
1821 Some old boot loaders still use this way.
1822
Linus Torvalds1da177e2005-04-16 15:20:36 -07001823# Compressed boot loader in ROM. Yes, we really want to ask about
1824# TEXT and BSS so we preserve their values in the config files.
1825config ZBOOT_ROM_TEXT
1826 hex "Compressed ROM boot loader base address"
1827 default "0"
1828 help
1829 The physical address at which the ROM-able zImage is to be
1830 placed in the target. Platforms which normally make use of
1831 ROM-able zImage formats normally set this to a suitable
1832 value in their defconfig file.
1833
1834 If ZBOOT_ROM is not enabled, this has no effect.
1835
1836config ZBOOT_ROM_BSS
1837 hex "Compressed ROM boot loader BSS address"
1838 default "0"
1839 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001840 The base address of an area of read/write memory in the target
1841 for the ROM-able zImage which must be available while the
1842 decompressor is running. It must be large enough to hold the
1843 entire decompressed kernel plus an additional 128 KiB.
1844 Platforms which normally make use of ROM-able zImage formats
1845 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001846
1847 If ZBOOT_ROM is not enabled, this has no effect.
1848
1849config ZBOOT_ROM
1850 bool "Compressed boot loader in ROM/flash"
1851 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001852 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853 help
1854 Say Y here if you intend to execute your compressed kernel image
1855 (zImage) directly from ROM or flash. If unsure, say N.
1856
Simon Horman090ab3f2011-04-26 06:29:53 +01001857choice
1858 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001859 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001860 default ZBOOT_ROM_NONE
1861 help
1862 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001863 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001864 kernel image to an MMC or SD card and boot the kernel straight
1865 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001866 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001867 rest the kernel image to RAM.
1868
1869config ZBOOT_ROM_NONE
1870 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1871 help
1872 Do not load image from SD or MMC
1873
Simon Hormanf45b1142011-01-11 04:01:08 +01001874config ZBOOT_ROM_MMCIF
1875 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001876 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001877 Load image from MMCIF hardware block.
1878
1879config ZBOOT_ROM_SH_MOBILE_SDHI
1880 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1881 help
1882 Load image from SDHI hardware block
1883
1884endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001885
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001886config ARM_APPENDED_DTB
1887 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001888 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001889 help
1890 With this option, the boot code will look for a device tree binary
1891 (DTB) appended to zImage
1892 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1893
1894 This is meant as a backward compatibility convenience for those
1895 systems with a bootloader that can't be upgraded to accommodate
1896 the documented boot protocol using a device tree.
1897
1898 Beware that there is very little in terms of protection against
1899 this option being confused by leftover garbage in memory that might
1900 look like a DTB header after a reboot if no actual DTB is appended
1901 to zImage. Do not leave this option active in a production kernel
1902 if you don't intend to always append a DTB. Proper passing of the
1903 location into r2 of a bootloader provided DTB is always preferable
1904 to this option.
1905
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001906config ARM_ATAG_DTB_COMPAT
1907 bool "Supplement the appended DTB with traditional ATAG information"
1908 depends on ARM_APPENDED_DTB
1909 help
1910 Some old bootloaders can't be updated to a DTB capable one, yet
1911 they provide ATAGs with memory configuration, the ramdisk address,
1912 the kernel cmdline string, etc. Such information is dynamically
1913 provided by the bootloader and can't always be stored in a static
1914 DTB. To allow a device tree enabled kernel to be used with such
1915 bootloaders, this option allows zImage to extract the information
1916 from the ATAG list and store it at run time into the appended DTB.
1917
Genoud Richardd0f34a112012-06-26 16:37:59 +01001918choice
1919 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1920 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1921
1922config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1923 bool "Use bootloader kernel arguments if available"
1924 help
1925 Uses the command-line options passed by the boot loader instead of
1926 the device tree bootargs property. If the boot loader doesn't provide
1927 any, the device tree bootargs property will be used.
1928
1929config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1930 bool "Extend with bootloader kernel arguments"
1931 help
1932 The command-line arguments provided by the boot loader will be
1933 appended to the the device tree bootargs property.
1934
1935endchoice
1936
Linus Torvalds1da177e2005-04-16 15:20:36 -07001937config CMDLINE
1938 string "Default kernel command string"
1939 default ""
1940 help
1941 On some architectures (EBSA110 and CATS), there is currently no way
1942 for the boot loader to pass arguments to the kernel. For these
1943 architectures, you should supply some command-line options at build
1944 time by entering them here. As a minimum, you should specify the
1945 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1946
Victor Boivie4394c122011-05-04 17:07:55 +01001947choice
1948 prompt "Kernel command line type" if CMDLINE != ""
1949 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001950 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001951
1952config CMDLINE_FROM_BOOTLOADER
1953 bool "Use bootloader kernel arguments if available"
1954 help
1955 Uses the command-line options passed by the boot loader. If
1956 the boot loader doesn't provide any, the default kernel command
1957 string provided in CMDLINE will be used.
1958
1959config CMDLINE_EXTEND
1960 bool "Extend bootloader kernel arguments"
1961 help
1962 The command-line arguments provided by the boot loader will be
1963 appended to the default kernel command string.
1964
Alexander Holler92d20402010-02-16 19:04:53 +01001965config CMDLINE_FORCE
1966 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001967 help
1968 Always use the default kernel command string, even if the boot
1969 loader passes other arguments to the kernel.
1970 This is useful if you cannot or don't want to change the
1971 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001972endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001973
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974config XIP_KERNEL
1975 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001976 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977 help
1978 Execute-In-Place allows the kernel to run from non-volatile storage
1979 directly addressable by the CPU, such as NOR flash. This saves RAM
1980 space since the text section of the kernel is not loaded from flash
1981 to RAM. Read-write sections, such as the data section and stack,
1982 are still copied to RAM. The XIP kernel is not compressed since
1983 it has to run directly from flash, so it will take more space to
1984 store it. The flash address used to link the kernel object files,
1985 and for storing it, is configuration dependent. Therefore, if you
1986 say Y here, you must know the proper physical address where to
1987 store the kernel image depending on your own flash memory usage.
1988
1989 Also note that the make target becomes "make xipImage" rather than
1990 "make zImage" or "make Image". The final kernel binary to put in
1991 ROM memory will be arch/arm/boot/xipImage.
1992
1993 If unsure, say N.
1994
1995config XIP_PHYS_ADDR
1996 hex "XIP Kernel Physical Location"
1997 depends on XIP_KERNEL
1998 default "0x00080000"
1999 help
2000 This is the physical address in your flash memory the kernel will
2001 be linked for and stored to. This address is dependent on your
2002 own flash usage.
2003
Richard Purdiec587e4a2007-02-06 21:29:00 +01002004config KEXEC
2005 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002006 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002007 help
2008 kexec is a system call that implements the ability to shutdown your
2009 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002010 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002011 you can start any kernel with it, not just Linux.
2012
2013 It is an ongoing process to be certain the hardware in a machine
2014 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002015 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002016
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002017config ATAGS_PROC
2018 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002019 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002020 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002021 help
2022 Should the atags used to boot the kernel be exported in an "atags"
2023 file in procfs. Useful with kexec.
2024
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002025config CRASH_DUMP
2026 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002027 help
2028 Generate crash dump after being started by kexec. This should
2029 be normally only set in special crash dump kernels which are
2030 loaded in the main kernel with kexec-tools into a specially
2031 reserved region and then later executed after a crash by
2032 kdump/kexec. The crash dump kernel must be compiled to a
2033 memory address not used by the main kernel
2034
2035 For more details see Documentation/kdump/kdump.txt
2036
Eric Miaoe69edc792010-07-05 15:56:50 +02002037config AUTO_ZRELADDR
2038 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002039 help
2040 ZRELADDR is the physical address where the decompressed kernel
2041 image will be placed. If AUTO_ZRELADDR is selected, the address
2042 will be determined at run-time by masking the current IP with
2043 0xf8000000. This assumes the zImage being placed in the first 128MB
2044 from start of memory.
2045
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046endmenu
2047
Russell Kingac9d7ef2008-08-18 17:26:00 +01002048menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051
Russell Kingac9d7ef2008-08-18 17:26:00 +01002052source "drivers/cpuidle/Kconfig"
2053
2054endmenu
2055
Linus Torvalds1da177e2005-04-16 15:20:36 -07002056menu "Floating point emulation"
2057
2058comment "At least one emulation must be selected"
2059
2060config FPE_NWFPE
2061 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002062 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063 ---help---
2064 Say Y to include the NWFPE floating point emulator in the kernel.
2065 This is necessary to run most binaries. Linux does not currently
2066 support floating point hardware so you need to say Y here even if
2067 your machine has an FPA or floating point co-processor podule.
2068
2069 You may say N here if you are going to load the Acorn FPEmulator
2070 early in the bootup.
2071
2072config FPE_NWFPE_XP
2073 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002074 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075 help
2076 Say Y to include 80-bit support in the kernel floating-point
2077 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2078 Note that gcc does not generate 80-bit operations by default,
2079 so in most cases this option only enlarges the size of the
2080 floating point emulator without any good reason.
2081
2082 You almost surely want to say N here.
2083
2084config FPE_FASTFPE
2085 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002086 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002087 ---help---
2088 Say Y here to include the FAST floating point emulator in the kernel.
2089 This is an experimental much faster emulator which now also has full
2090 precision for the mantissa. It does not support any exceptions.
2091 It is very simple, and approximately 3-6 times faster than NWFPE.
2092
2093 It should be sufficient for most programs. It may be not suitable
2094 for scientific calculations, but you have to check this for yourself.
2095 If you do not feel you need a faster FP emulation you should better
2096 choose NWFPE.
2097
2098config VFP
2099 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002100 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101 help
2102 Say Y to include VFP support code in the kernel. This is needed
2103 if your hardware includes a VFP unit.
2104
2105 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2106 release notes and additional status information.
2107
2108 Say N if your target does not have VFP hardware.
2109
Catalin Marinas25ebee02007-09-25 15:22:24 +01002110config VFPv3
2111 bool
2112 depends on VFP
2113 default y if CPU_V7
2114
Catalin Marinasb5872db2008-01-10 19:16:17 +01002115config NEON
2116 bool "Advanced SIMD (NEON) Extension support"
2117 depends on VFPv3 && CPU_V7
2118 help
2119 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2120 Extension.
2121
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002122config KERNEL_MODE_NEON
2123 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002124 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002125 help
2126 Say Y to include support for NEON in kernel mode.
2127
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128endmenu
2129
2130menu "Userspace binary formats"
2131
2132source "fs/Kconfig.binfmt"
2133
2134config ARTHUR
2135 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002136 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137 help
2138 Say Y here to include the kernel code necessary if you want to run
2139 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2140 experimental; if this sounds frightening, say N and sleep in peace.
2141 You can also say M here to compile this support as a module (which
2142 will be called arthur).
2143
2144endmenu
2145
2146menu "Power management options"
2147
Russell Kingeceab4a2005-11-15 11:31:41 +00002148source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002149
Johannes Bergf4cb5702007-12-08 02:14:00 +01002150config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002151 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002152 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002153 def_bool y
2154
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002155config ARM_CPU_SUSPEND
2156 def_bool PM_SLEEP
2157
Sebastian Capella603fb422014-03-25 01:20:29 +01002158config ARCH_HIBERNATION_POSSIBLE
2159 bool
2160 depends on MMU
2161 default y if ARCH_SUSPEND_POSSIBLE
2162
Linus Torvalds1da177e2005-04-16 15:20:36 -07002163endmenu
2164
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002165source "net/Kconfig"
2166
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002167source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002168
2169source "fs/Kconfig"
2170
Linus Torvalds1da177e2005-04-16 15:20:36 -07002171source "arch/arm/Kconfig.debug"
2172
2173source "security/Kconfig"
2174
2175source "crypto/Kconfig"
2176
2177source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002178
2179source "arch/arm/kvm/Kconfig"