blob: 6c6fdb8a36e148b62697499d506707bf03480be9 [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
Pawel Moll81cc3f82014-11-25 18:17:34 +0000353 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100354 help
355 This enables support for ARM Ltd RealView boards.
356
357config ARCH_VERSATILE
358 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100359 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100360 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100361 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100362 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100363 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100364 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900365 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000366 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000367 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100368 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000369 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100370 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100371 help
372 This enables support for ARM Ltd Versatile board.
373
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100374config ARCH_AT91
375 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100376 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100377 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100378 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500379 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800380 select PINCTRL
381 select PINCTRL_AT91 if USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100382 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100383 This enables support for systems based on Atmel
384 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100385
Russell King93e22562012-10-12 14:20:52 +0100386config ARCH_CLPS711X
387 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400388 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400389 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400390 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100391 select COMMON_CLK
392 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400393 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400394 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400395 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100396 help
397 Support for Cirrus Logic 711x/721x/731x based boards.
398
Russell King788c9702009-04-26 14:21:59 +0100399config ARCH_GEMINI
400 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100401 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200402 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100403 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200404 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100405 help
406 Support for the Cortina Systems Gemini family SoCs
407
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408config ARCH_EBSA110
409 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100410 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000411 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100412 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600413 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400414 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700415 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 help
417 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000418 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 Ethernet interface, two PCMCIA sockets, two serial ports and a
420 parallel port.
421
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100422config ARCH_EFM32
423 bool "Energy Micro efm32"
424 depends on !MMU
425 select ARCH_REQUIRE_GPIOLIB
426 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100427 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100428 select CLKSRC_OF
429 select COMMON_CLK
430 select CPU_V7M
431 select GENERIC_CLOCKEVENTS
432 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700433 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100434 select SPARSE_IRQ
435 select USE_OF
436 help
437 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
438 processors.
439
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000440config ARCH_EP93XX
441 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100442 select ARCH_HAS_HOLES_MEMORYMODEL
443 select ARCH_REQUIRE_GPIOLIB
444 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000445 select ARM_AMBA
446 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100447 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100448 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000449 help
450 This enables support for the Cirrus EP93xx series of CPUs.
451
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452config ARCH_FOOTBRIDGE
453 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000454 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000456 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200457 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600458 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400459 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000460 help
461 Support for systems based on the DC21285 companion chip
462 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100464config ARCH_NETX
465 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100466 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100467 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000468 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100469 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000470 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100471 This enables support for systems based on the Hilscher NetX Soc
472
Russell King3b938be2007-05-12 11:25:44 +0100473config ARCH_IOP13XX
474 bool "IOP13xx-based"
475 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100476 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400477 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600478 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100479 select PCI
480 select PLAT_IOP
481 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000482 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100483 help
484 Support for Intel's IOP13XX (XScale) family of processors.
485
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100486config ARCH_IOP32X
487 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100488 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100489 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000490 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200491 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600492 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100493 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100494 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000495 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100496 Support for Intel's 80219 and IOP32X (XScale) family of
497 processors.
498
499config ARCH_IOP33X
500 bool "IOP33x-based"
501 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100502 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000503 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200504 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600505 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100506 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100507 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100508 help
509 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
Russell King3b938be2007-05-12 11:25:44 +0100511config ARCH_IXP4XX
512 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100513 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500514 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100515 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100516 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100517 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000518 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100519 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100520 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100521 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600522 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200523 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100524 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100525 help
Russell King3b938be2007-05-12 11:25:44 +0100526 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100527
Saeed Bisharaedabd382009-08-06 15:12:43 +0300528config ARCH_DOVE
529 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300530 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100531 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300532 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100533 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100534 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100535 select PINCTRL
536 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200537 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300538 help
539 Support for the Marvell Dove SoC 88AP510
540
Russell King788c9702009-04-26 14:21:59 +0100541config ARCH_MV78XX0
542 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700543 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100544 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100545 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100546 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100547 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200548 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100549 help
550 Support for the following Marvell MV78xx0 series SoCs:
551 MV781x0, MV782x0.
552
553config ARCH_ORION5X
554 bool "Marvell Orion"
555 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700556 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100557 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100558 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100559 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100560 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200561 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100562 help
563 Support for the following Marvell Orion 5x series SoCs:
564 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
565 Orion-2 (5281), Orion-1-90 (6183).
566
567config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500568 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100569 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100570 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100571 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100572 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100573 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800574 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800575 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800576 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800577 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100578 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400579 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100580 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500581 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100582
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100583config ARCH_KS8695
584 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100585 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200586 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100587 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200588 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100589 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100590 help
591 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
592 System-on-Chip devices.
593
Russell King788c9702009-04-26 14:21:59 +0100594config ARCH_W90X900
595 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100596 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100597 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100598 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100599 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100600 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200601 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100602 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
603 At present, the w90x900 has been renamed nuc900, regarding
604 the ARM series product line, you can login the following
605 link address to know more.
606
607 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
608 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400609
Russell King93e22562012-10-12 14:20:52 +0100610config ARCH_LPC32XX
611 bool "NXP LPC32XX"
612 select ARCH_REQUIRE_GPIOLIB
613 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000614 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100615 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100616 select CPU_ARM926T
617 select GENERIC_CLOCKEVENTS
618 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100619 select USE_OF
620 help
621 Support for the NXP LPC32XX family of processors
622
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700624 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100625 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100626 select ARCH_MTD_XIP
627 select ARCH_REQUIRE_GPIOLIB
628 select ARM_CPU_SUSPEND if PM
629 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100630 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100631 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200632 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100633 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800634 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100635 select HAVE_IDE
636 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800637 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800638 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000639 help
eric miao2c8086a2007-09-11 19:13:17 -0700640 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600642config ARCH_MSM
643 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700644 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700645 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100646 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800647 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800648 Support for Qualcomm MSM/QSD based systems. This runs on the
649 apps processor of the MSM/QSD and depends on a shared memory
650 interface to the modem processor which runs the baseband
651 stack and controls some vital subsystems
652 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800653
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100654config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100655 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100656 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100657 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900658 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900659 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100660 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800661 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800662 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900663 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000664 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000665 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000666 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700667 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200668 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100669 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900670 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100671 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000672 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100673 Support for Renesas ARM SoC platforms using a non-multiplatform
674 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
675 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000676
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677config ARCH_RPC
678 bool "RiscPC"
679 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100680 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100681 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000682 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100683 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100684 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200685 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select HAVE_PATA_PLATFORM
687 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600688 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400689 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700690 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100691 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 help
693 On the Acorn Risc-PC, Linux can support the internal IDE disk and
694 CD-ROM interface, serial and parallel port, and the floppy drive.
695
696config ARCH_SA1100
697 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100698 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700699 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100700 select ARCH_SPARSEMEM_ENABLE
701 select CLKDEV_LOOKUP
702 select CLKSRC_MMIO
703 select CPU_FREQ
704 select CPU_SA1100
705 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200706 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100707 select ISA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400708 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100709 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000710 help
711 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900713config ARCH_S3C24XX
714 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900715 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100716 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100717 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200718 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800719 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900720 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900721 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900722 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100723 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900724 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600725 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900726 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900728 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
729 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
730 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
731 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900732
Ben Dooksa08ab632008-10-21 14:06:39 +0100733config ARCH_S3C64XX
734 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900735 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200736 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100737 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100738 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100739 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200740 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900741 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900742 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800743 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900744 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900745 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900746 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100747 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700748 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100749 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100750 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100751 select S3C_DEV_NAND
752 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900753 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900754 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900755 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100756 help
757 Samsung S3C64XX series based systems
758
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100759config ARCH_DAVINCI
760 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100761 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700762 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100763 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700764 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100765 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100766 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100767 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500768 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530769 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100770 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100771 help
772 Support for TI's DaVinci platform.
773
Tony Lindgrena0694862013-01-11 11:24:20 -0800774config ARCH_OMAP1
775 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600776 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100777 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800778 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100779 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200780 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100781 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100782 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800783 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800784 select HAVE_IDE
785 select IRQ_DOMAIN
786 select NEED_MACH_IO_H if PCCARD
787 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100788 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800789 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800790
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791endchoice
792
Rob Herring387798b2012-09-06 13:41:12 -0500793menu "Multiple platform selection"
794 depends on ARCH_MULTIPLATFORM
795
796comment "CPU Core family selection"
797
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100798config ARCH_MULTI_V4
799 bool "ARMv4 based platforms (FA526)"
800 depends on !ARCH_MULTI_V6_V7
801 select ARCH_MULTI_V4_V5
802 select CPU_FA526
803
Rob Herring387798b2012-09-06 13:41:12 -0500804config ARCH_MULTI_V4T
805 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500806 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100807 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200808 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
809 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
810 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500811
812config ARCH_MULTI_V5
813 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500814 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100815 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100816 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200817 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
818 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500819
820config ARCH_MULTI_V4_V5
821 bool
822
823config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800824 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500825 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600826 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500827
828config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800829 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500830 default y
831 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100832 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600833 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500834
835config ARCH_MULTI_V6_V7
836 bool
Rob Herring9352b052014-01-31 15:36:10 -0600837 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500838
839config ARCH_MULTI_CPU_AUTO
840 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
841 select ARCH_MULTI_V5
842
843endmenu
844
Rob Herring05e2a3d2013-12-05 10:04:54 -0600845config ARCH_VIRT
846 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600847 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600848 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600849 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600850 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600851
Russell Kingccf50e22010-03-15 19:03:06 +0000852#
853# This is sorted alphabetically by mach-* pathname. However, plat-*
854# Kconfigs may be included either alphabetically (according to the
855# plat- suffix) or along side the corresponding mach-* source.
856#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200857source "arch/arm/mach-mvebu/Kconfig"
858
Russell King95b8f202010-01-14 11:43:54 +0000859source "arch/arm/mach-at91/Kconfig"
860
Anders Berg1d22924e2014-05-23 11:08:35 +0200861source "arch/arm/mach-axxia/Kconfig"
862
Christian Daudt8ac49e02012-11-19 09:46:10 -0800863source "arch/arm/mach-bcm/Kconfig"
864
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200865source "arch/arm/mach-berlin/Kconfig"
866
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867source "arch/arm/mach-clps711x/Kconfig"
868
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300869source "arch/arm/mach-cns3xxx/Kconfig"
870
Russell King95b8f202010-01-14 11:43:54 +0000871source "arch/arm/mach-davinci/Kconfig"
872
873source "arch/arm/mach-dove/Kconfig"
874
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000875source "arch/arm/mach-ep93xx/Kconfig"
876
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877source "arch/arm/mach-footbridge/Kconfig"
878
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200879source "arch/arm/mach-gemini/Kconfig"
880
Rob Herring387798b2012-09-06 13:41:12 -0500881source "arch/arm/mach-highbank/Kconfig"
882
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800883source "arch/arm/mach-hisi/Kconfig"
884
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885source "arch/arm/mach-integrator/Kconfig"
886
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100887source "arch/arm/mach-iop32x/Kconfig"
888
889source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890
Dan Williams285f5fa2006-12-07 02:59:39 +0100891source "arch/arm/mach-iop13xx/Kconfig"
892
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893source "arch/arm/mach-ixp4xx/Kconfig"
894
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400895source "arch/arm/mach-keystone/Kconfig"
896
Russell King95b8f202010-01-14 11:43:54 +0000897source "arch/arm/mach-ks8695/Kconfig"
898
Carlo Caione3b8f5032014-09-10 22:16:59 +0200899source "arch/arm/mach-meson/Kconfig"
900
Russell King95b8f202010-01-14 11:43:54 +0000901source "arch/arm/mach-msm/Kconfig"
902
Jonas Jensen17723fd32013-12-18 13:58:45 +0100903source "arch/arm/mach-moxart/Kconfig"
904
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200905source "arch/arm/mach-mv78xx0/Kconfig"
906
Shawn Guo3995eb82012-09-13 19:48:07 +0800907source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Matthias Bruggerf682a212014-05-13 01:06:13 +0200909source "arch/arm/mach-mediatek/Kconfig"
910
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800911source "arch/arm/mach-mxs/Kconfig"
912
Russell King95b8f202010-01-14 11:43:54 +0000913source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800914
Russell King95b8f202010-01-14 11:43:54 +0000915source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000916
Daniel Tang9851ca52013-06-11 18:40:17 +1000917source "arch/arm/mach-nspire/Kconfig"
918
Tony Lindgrend48af152005-07-10 19:58:17 +0100919source "arch/arm/plat-omap/Kconfig"
920
921source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922
Tony Lindgren1dbae812005-11-10 14:26:51 +0000923source "arch/arm/mach-omap2/Kconfig"
924
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400925source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400926
Rob Herring387798b2012-09-06 13:41:12 -0500927source "arch/arm/mach-picoxcell/Kconfig"
928
Russell King95b8f202010-01-14 11:43:54 +0000929source "arch/arm/mach-pxa/Kconfig"
930source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
Russell King95b8f202010-01-14 11:43:54 +0000932source "arch/arm/mach-mmp/Kconfig"
933
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600934source "arch/arm/mach-qcom/Kconfig"
935
Russell King95b8f202010-01-14 11:43:54 +0000936source "arch/arm/mach-realview/Kconfig"
937
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200938source "arch/arm/mach-rockchip/Kconfig"
939
Russell King95b8f202010-01-14 11:43:54 +0000940source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300941
Rob Herring387798b2012-09-06 13:41:12 -0500942source "arch/arm/mach-socfpga/Kconfig"
943
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100944source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100945
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100946source "arch/arm/mach-sti/Kconfig"
947
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900948source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949
Ben Dooks431107e2010-01-26 10:11:04 +0900950source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100951
Kukjin Kim170f4e42010-02-24 16:40:44 +0900952source "arch/arm/mach-s5pv210/Kconfig"
953
Kukjin Kim83014572011-11-06 13:54:56 +0900954source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500955source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900956
Russell King882d01f2010-03-02 23:40:15 +0000957source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
Maxime Ripard3b526342012-11-08 12:40:16 +0100959source "arch/arm/mach-sunxi/Kconfig"
960
Barry Song156a0992012-08-23 13:41:58 +0800961source "arch/arm/mach-prima2/Kconfig"
962
Erik Gillingc5f80062010-01-21 16:53:02 -0800963source "arch/arm/mach-tegra/Kconfig"
964
Russell King95b8f202010-01-14 11:43:54 +0000965source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966
Russell King95b8f202010-01-14 11:43:54 +0000967source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968
969source "arch/arm/mach-versatile/Kconfig"
970
Russell Kingceade892010-02-11 21:44:53 +0000971source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000972source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000973
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300974source "arch/arm/mach-vt8500/Kconfig"
975
wanzongshun7ec80dd2008-12-03 03:55:38 +0100976source "arch/arm/mach-w90x900/Kconfig"
977
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600978source "arch/arm/mach-zynq/Kconfig"
979
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980# Definitions to make life easier
981config ARCH_ACORN
982 bool
983
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100984config PLAT_IOP
985 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700986 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100987
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400988config PLAT_ORION
989 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100990 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100991 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100992 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200993 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400994
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200995config PLAT_ORION_LEGACY
996 bool
997 select PLAT_ORION
998
Eric Miaobd5ce432009-01-20 12:06:01 +0800999config PLAT_PXA
1000 bool
1001
Russell Kingf4b8b312010-01-14 12:48:06 +00001002config PLAT_VERSATILE
1003 bool
1004
Russell Kinge3887712010-01-14 13:30:16 +00001005config ARM_TIMER_SP804
1006 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001007 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001008 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001009
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001010source "arch/arm/firmware/Kconfig"
1011
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012source arch/arm/mm/Kconfig
1013
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001014config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001015 bool "Enable iWMMXt support"
1016 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1017 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001018 help
1019 Enable support for iWMMXt context switching at run time if
1020 running on a CPU that supports it.
1021
eric miao52108642010-12-13 09:42:34 +01001022config MULTI_IRQ_HANDLER
1023 bool
1024 help
1025 Allow each machine to specify it's own IRQ handler at run time.
1026
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001027if !MMU
1028source "arch/arm/Kconfig-nommu"
1029endif
1030
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001031config PJ4B_ERRATA_4742
1032 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1033 depends on CPU_PJ4B && MACH_ARMADA_370
1034 default y
1035 help
1036 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1037 Event (WFE) IDLE states, a specific timing sensitivity exists between
1038 the retiring WFI/WFE instructions and the newly issued subsequent
1039 instructions. This sensitivity can result in a CPU hang scenario.
1040 Workaround:
1041 The software must insert either a Data Synchronization Barrier (DSB)
1042 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1043 instruction
1044
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001045config ARM_ERRATA_326103
1046 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1047 depends on CPU_V6
1048 help
1049 Executing a SWP instruction to read-only memory does not set bit 11
1050 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1051 treat the access as a read, preventing a COW from occurring and
1052 causing the faulting task to livelock.
1053
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001054config ARM_ERRATA_411920
1055 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001056 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001057 help
1058 Invalidation of the Instruction Cache operation can
1059 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1060 It does not affect the MPCore. This option enables the ARM Ltd.
1061 recommended workaround.
1062
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001063config ARM_ERRATA_430973
1064 bool "ARM errata: Stale prediction on replaced interworking branch"
1065 depends on CPU_V7
1066 help
1067 This option enables the workaround for the 430973 Cortex-A8
1068 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1069 interworking branch is replaced with another code sequence at the
1070 same virtual address, whether due to self-modifying code or virtual
1071 to physical address re-mapping, Cortex-A8 does not recover from the
1072 stale interworking branch prediction. This results in Cortex-A8
1073 executing the new code sequence in the incorrect ARM or Thumb state.
1074 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1075 and also flushes the branch target cache at every context switch.
1076 Note that setting specific bits in the ACTLR register may not be
1077 available in non-secure mode.
1078
Catalin Marinas855c5512009-04-30 17:06:15 +01001079config ARM_ERRATA_458693
1080 bool "ARM errata: Processor deadlock when a false hazard is created"
1081 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001082 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001083 help
1084 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1085 erratum. For very specific sequences of memory operations, it is
1086 possible for a hazard condition intended for a cache line to instead
1087 be incorrectly associated with a different cache line. This false
1088 hazard might then cause a processor deadlock. The workaround enables
1089 the L1 caching of the NEON accesses and disables the PLD instruction
1090 in the ACTLR register. Note that setting specific bits in the ACTLR
1091 register may not be available in non-secure mode.
1092
Catalin Marinas0516e462009-04-30 17:06:20 +01001093config ARM_ERRATA_460075
1094 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1095 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001096 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001097 help
1098 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1099 erratum. Any asynchronous access to the L2 cache may encounter a
1100 situation in which recent store transactions to the L2 cache are lost
1101 and overwritten with stale memory contents from external memory. The
1102 workaround disables the write-allocate mode for the L2 cache via the
1103 ACTLR register. Note that setting specific bits in the ACTLR register
1104 may not be available in non-secure mode.
1105
Will Deacon9f050272010-09-14 09:51:43 +01001106config ARM_ERRATA_742230
1107 bool "ARM errata: DMB operation may be faulty"
1108 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001109 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001110 help
1111 This option enables the workaround for the 742230 Cortex-A9
1112 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1113 between two write operations may not ensure the correct visibility
1114 ordering of the two writes. This workaround sets a specific bit in
1115 the diagnostic register of the Cortex-A9 which causes the DMB
1116 instruction to behave as a DSB, ensuring the correct behaviour of
1117 the two writes.
1118
Will Deacona672e992010-09-14 09:53:02 +01001119config ARM_ERRATA_742231
1120 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1121 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001122 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001123 help
1124 This option enables the workaround for the 742231 Cortex-A9
1125 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1126 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1127 accessing some data located in the same cache line, may get corrupted
1128 data due to bad handling of the address hazard when the line gets
1129 replaced from one of the CPUs at the same time as another CPU is
1130 accessing it. This workaround sets specific bits in the diagnostic
1131 register of the Cortex-A9 which reduces the linefill issuing
1132 capabilities of the processor.
1133
Jon Medhurst69155792013-06-07 10:35:35 +01001134config ARM_ERRATA_643719
1135 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1136 depends on CPU_V7 && SMP
1137 help
1138 This option enables the workaround for the 643719 Cortex-A9 (prior to
1139 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1140 register returns zero when it should return one. The workaround
1141 corrects this value, ensuring cache maintenance operations which use
1142 it behave as intended and avoiding data corruption.
1143
Will Deaconcdf357f2010-08-05 11:20:51 +01001144config ARM_ERRATA_720789
1145 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001146 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001147 help
1148 This option enables the workaround for the 720789 Cortex-A9 (prior to
1149 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1150 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1151 As a consequence of this erratum, some TLB entries which should be
1152 invalidated are not, resulting in an incoherency in the system page
1153 tables. The workaround changes the TLB flushing routines to invalidate
1154 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001155
1156config ARM_ERRATA_743622
1157 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1158 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001159 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001160 help
1161 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001162 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001163 optimisation in the Cortex-A9 Store Buffer may lead to data
1164 corruption. This workaround sets a specific bit in the diagnostic
1165 register of the Cortex-A9 which disables the Store Buffer
1166 optimisation, preventing the defect from occurring. This has no
1167 visible impact on the overall performance or power consumption of the
1168 processor.
1169
Will Deacon9a27c272011-02-18 16:36:35 +01001170config ARM_ERRATA_751472
1171 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001172 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001173 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001174 help
1175 This option enables the workaround for the 751472 Cortex-A9 (prior
1176 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1177 completion of a following broadcasted operation if the second
1178 operation is received by a CPU before the ICIALLUIS has completed,
1179 potentially leading to corrupted entries in the cache or TLB.
1180
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001181config ARM_ERRATA_754322
1182 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1183 depends on CPU_V7
1184 help
1185 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1186 r3p*) erratum. A speculative memory access may cause a page table walk
1187 which starts prior to an ASID switch but completes afterwards. This
1188 can populate the micro-TLB with a stale entry which may be hit with
1189 the new ASID. This workaround places two dsb instructions in the mm
1190 switching code so that no page table walks can cross the ASID switch.
1191
Will Deacon5dab26af2011-03-04 12:38:54 +01001192config ARM_ERRATA_754327
1193 bool "ARM errata: no automatic Store Buffer drain"
1194 depends on CPU_V7 && SMP
1195 help
1196 This option enables the workaround for the 754327 Cortex-A9 (prior to
1197 r2p0) erratum. The Store Buffer does not have any automatic draining
1198 mechanism and therefore a livelock may occur if an external agent
1199 continuously polls a memory location waiting to observe an update.
1200 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1201 written polling loops from denying visibility of updates to memory.
1202
Catalin Marinas145e10e2011-08-15 11:04:41 +01001203config ARM_ERRATA_364296
1204 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001205 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001206 help
1207 This options enables the workaround for the 364296 ARM1136
1208 r0p2 erratum (possible cache data corruption with
1209 hit-under-miss enabled). It sets the undocumented bit 31 in
1210 the auxiliary control register and the FI bit in the control
1211 register, thus disabling hit-under-miss without putting the
1212 processor into full low interrupt latency mode. ARM11MPCore
1213 is not affected.
1214
Will Deaconf630c1b2011-09-15 11:45:15 +01001215config ARM_ERRATA_764369
1216 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1217 depends on CPU_V7 && SMP
1218 help
1219 This option enables the workaround for erratum 764369
1220 affecting Cortex-A9 MPCore with two or more processors (all
1221 current revisions). Under certain timing circumstances, a data
1222 cache line maintenance operation by MVA targeting an Inner
1223 Shareable memory region may fail to proceed up to either the
1224 Point of Coherency or to the Point of Unification of the
1225 system. This workaround adds a DSB instruction before the
1226 relevant cache maintenance functions and sets a specific bit
1227 in the diagnostic control register of the SCU.
1228
Simon Horman7253b852012-09-28 02:12:45 +01001229config ARM_ERRATA_775420
1230 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1231 depends on CPU_V7
1232 help
1233 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1234 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1235 operation aborts with MMU exception, it might cause the processor
1236 to deadlock. This workaround puts DSB before executing ISB if
1237 an abort may occur on cache maintenance.
1238
Catalin Marinas93dc6882013-03-26 23:35:04 +01001239config ARM_ERRATA_798181
1240 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1241 depends on CPU_V7 && SMP
1242 help
1243 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1244 adequately shooting down all use of the old entries. This
1245 option enables the Linux kernel workaround for this erratum
1246 which sends an IPI to the CPUs that are running the same ASID
1247 as the one being invalidated.
1248
Will Deacon84b65042013-08-20 17:29:55 +01001249config ARM_ERRATA_773022
1250 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1251 depends on CPU_V7
1252 help
1253 This option enables the workaround for the 773022 Cortex-A15
1254 (up to r0p4) erratum. In certain rare sequences of code, the
1255 loop buffer may deliver incorrect instructions. This
1256 workaround disables the loop buffer to avoid the erratum.
1257
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258endmenu
1259
1260source "arch/arm/common/Kconfig"
1261
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262menu "Bus support"
1263
1264config ARM_AMBA
1265 bool
1266
1267config ISA
1268 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 help
1270 Find out whether you have ISA slots on your motherboard. ISA is the
1271 name of a bus system, i.e. the way the CPU talks to the other stuff
1272 inside your box. Other bus systems are PCI, EISA, MicroChannel
1273 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1274 newer boards don't support it. If you have ISA, say Y, otherwise N.
1275
Russell King065909b2006-01-04 15:44:16 +00001276# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277config ISA_DMA
1278 bool
Russell King065909b2006-01-04 15:44:16 +00001279 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280
Russell King065909b2006-01-04 15:44:16 +00001281# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001282config ISA_DMA_API
1283 bool
Al Viro5cae8412005-05-04 05:39:22 +01001284
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001286 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287 help
1288 Find out whether you have a PCI motherboard. PCI is the name of a
1289 bus system, i.e. the way the CPU talks to the other stuff inside
1290 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1291 VESA. If you have PCI, say Y, otherwise N.
1292
Anton Vorontsov52882172010-04-19 13:20:49 +01001293config PCI_DOMAINS
1294 bool
1295 depends on PCI
1296
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001297config PCI_NANOENGINE
1298 bool "BSE nanoEngine PCI support"
1299 depends on SA1100_NANOENGINE
1300 help
1301 Enable PCI on the BSE nanoEngine board.
1302
Matthew Wilcox36e23592007-07-10 10:54:40 -06001303config PCI_SYSCALL
1304 def_bool PCI
1305
Mike Rapoporta0113a92007-11-25 08:55:34 +01001306config PCI_HOST_ITE8152
1307 bool
1308 depends on PCI && MACH_ARMCORE
1309 default y
1310 select DMABOUNCE
1311
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001313source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314
1315source "drivers/pcmcia/Kconfig"
1316
1317endmenu
1318
1319menu "Kernel Features"
1320
Dave Martin3b556582011-12-07 15:38:04 +00001321config HAVE_SMP
1322 bool
1323 help
1324 This option should be selected by machines which have an SMP-
1325 capable CPU.
1326
1327 The only effect of this option is to make the SMP-related
1328 options available to the user for configuration.
1329
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001331 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001332 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001333 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001334 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001335 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 help
1337 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001338 a system with only one CPU, say N. If you have a system with more
1339 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
Robert Graffham4a474152014-01-23 15:55:29 -08001341 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001343 you say Y here, the kernel will run on many, but not all,
1344 uniprocessor machines. On a uniprocessor machine, the kernel
1345 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346
Paul Bolle395cf962011-08-15 02:02:26 +02001347 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001349 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350
1351 If you don't know what to do here, say N.
1352
Russell Kingf00ec482010-09-04 10:47:48 +01001353config SMP_ON_UP
1354 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001355 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001356 default y
1357 help
1358 SMP kernels contain instructions which fail on non-SMP processors.
1359 Enabling this option allows the kernel to modify itself to make
1360 these instructions safe. Disabling it allows about 1K of space
1361 savings.
1362
1363 If you don't know what to do here, say Y.
1364
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001365config ARM_CPU_TOPOLOGY
1366 bool "Support cpu topology definition"
1367 depends on SMP && CPU_V7
1368 default y
1369 help
1370 Support ARM cpu topology definition. The MPIDR register defines
1371 affinity between processors which is then used to describe the cpu
1372 topology of an ARM System.
1373
1374config SCHED_MC
1375 bool "Multi-core scheduler support"
1376 depends on ARM_CPU_TOPOLOGY
1377 help
1378 Multi-core scheduler support improves the CPU scheduler's decision
1379 making when dealing with multi-core CPU chips at a cost of slightly
1380 increased overhead in some places. If unsure say N here.
1381
1382config SCHED_SMT
1383 bool "SMT scheduler support"
1384 depends on ARM_CPU_TOPOLOGY
1385 help
1386 Improves the CPU scheduler's decision making when dealing with
1387 MultiThreading at a cost of slightly increased overhead in some
1388 places. If unsure say N here.
1389
Russell Kinga8cbcd92009-05-16 11:51:14 +01001390config HAVE_ARM_SCU
1391 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001392 help
1393 This option enables support for the ARM system coherency unit
1394
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001395config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001396 bool "Architected timer support"
1397 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001398 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001399 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001400 help
1401 This option enables support for the ARM architected timer
1402
Russell Kingf32f4ce2009-05-16 12:14:21 +01001403config HAVE_ARM_TWD
1404 bool
1405 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001406 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001407 help
1408 This options enables support for the ARM timer and watchdog unit
1409
Nicolas Pitree8db2882012-04-12 02:45:22 -04001410config MCPM
1411 bool "Multi-Cluster Power Management"
1412 depends on CPU_V7 && SMP
1413 help
1414 This option provides the common power management infrastructure
1415 for (multi-)cluster based systems, such as big.LITTLE based
1416 systems.
1417
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001418config MCPM_QUAD_CLUSTER
1419 bool
1420 depends on MCPM
1421 help
1422 To avoid wasting resources unnecessarily, MCPM only supports up
1423 to 2 clusters by default.
1424 Platforms with 3 or 4 clusters that use MCPM must select this
1425 option to allow the additional clusters to be managed.
1426
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001427config BIG_LITTLE
1428 bool "big.LITTLE support (Experimental)"
1429 depends on CPU_V7 && SMP
1430 select MCPM
1431 help
1432 This option enables support selections for the big.LITTLE
1433 system architecture.
1434
1435config BL_SWITCHER
1436 bool "big.LITTLE switcher support"
1437 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001438 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001439 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001440 help
1441 The big.LITTLE "switcher" provides the core functionality to
1442 transparently handle transition between a cluster of A15's
1443 and a cluster of A7's in a big.LITTLE system.
1444
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001445config BL_SWITCHER_DUMMY_IF
1446 tristate "Simple big.LITTLE switcher user interface"
1447 depends on BL_SWITCHER && DEBUG_KERNEL
1448 help
1449 This is a simple and dummy char dev interface to control
1450 the big.LITTLE switcher core code. It is meant for
1451 debugging purposes only.
1452
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001453choice
1454 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001455 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001456 default VMSPLIT_3G
1457 help
1458 Select the desired split between kernel and user memory.
1459
1460 If you are not absolutely sure what you are doing, leave this
1461 option alone!
1462
1463 config VMSPLIT_3G
1464 bool "3G/1G user/kernel split"
1465 config VMSPLIT_2G
1466 bool "2G/2G user/kernel split"
1467 config VMSPLIT_1G
1468 bool "1G/3G user/kernel split"
1469endchoice
1470
1471config PAGE_OFFSET
1472 hex
Russell King006fa252014-02-26 19:40:46 +00001473 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001474 default 0x40000000 if VMSPLIT_1G
1475 default 0x80000000 if VMSPLIT_2G
1476 default 0xC0000000
1477
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478config NR_CPUS
1479 int "Maximum number of CPUs (2-32)"
1480 range 2 32
1481 depends on SMP
1482 default "4"
1483
Russell Kinga054a812005-11-02 22:24:33 +00001484config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001485 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001486 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001487 help
1488 Say Y here to experiment with turning CPUs off and on. CPUs
1489 can be controlled through /sys/devices/system/cpu.
1490
Will Deacon2bdd4242012-12-12 19:20:52 +00001491config ARM_PSCI
1492 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1493 depends on CPU_V7
1494 help
1495 Say Y here if you want Linux to communicate with system firmware
1496 implementing the PSCI specification for CPU-centric power
1497 management operations described in ARM document number ARM DEN
1498 0022A ("Power State Coordination Interface System Software on
1499 ARM processors").
1500
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001501# The GPIO number here must be sorted by descending number. In case of
1502# a multiplatform kernel, we just want the highest value required by the
1503# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001504config ARCH_NR_GPIO
1505 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001506 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001507 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1508 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001509 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001510 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001511 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001512 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001513 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001514 default 0
1515 help
1516 Maximum number of GPIOs in the system.
1517
1518 If unsure, leave the default value.
1519
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001520source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001521
Russell Kingc9218b12013-04-27 23:31:10 +01001522config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001523 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001524 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001525 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001526 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001527 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001528 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001529
1530choice
Russell King47d84682013-09-10 23:47:55 +01001531 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001532 prompt "Timer frequency"
1533
1534config HZ_100
1535 bool "100 Hz"
1536
1537config HZ_200
1538 bool "200 Hz"
1539
1540config HZ_250
1541 bool "250 Hz"
1542
1543config HZ_300
1544 bool "300 Hz"
1545
1546config HZ_500
1547 bool "500 Hz"
1548
1549config HZ_1000
1550 bool "1000 Hz"
1551
1552endchoice
1553
1554config HZ
1555 int
Russell King47d84682013-09-10 23:47:55 +01001556 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001557 default 100 if HZ_100
1558 default 200 if HZ_200
1559 default 250 if HZ_250
1560 default 300 if HZ_300
1561 default 500 if HZ_500
1562 default 1000
1563
1564config SCHED_HRTICK
1565 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001566
Catalin Marinas16c79652009-07-24 12:33:02 +01001567config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001568 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001569 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001570 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001571 select AEABI
1572 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001573 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001574 help
1575 By enabling this option, the kernel will be compiled in
1576 Thumb-2 mode. A compiler/assembler that understand the unified
1577 ARM-Thumb syntax is needed.
1578
1579 If unsure, say N.
1580
Dave Martin6f685c52011-03-03 11:41:12 +01001581config THUMB2_AVOID_R_ARM_THM_JUMP11
1582 bool "Work around buggy Thumb-2 short branch relocations in gas"
1583 depends on THUMB2_KERNEL && MODULES
1584 default y
1585 help
1586 Various binutils versions can resolve Thumb-2 branches to
1587 locally-defined, preemptible global symbols as short-range "b.n"
1588 branch instructions.
1589
1590 This is a problem, because there's no guarantee the final
1591 destination of the symbol, or any candidate locations for a
1592 trampoline, are within range of the branch. For this reason, the
1593 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1594 relocation in modules at all, and it makes little sense to add
1595 support.
1596
1597 The symptom is that the kernel fails with an "unsupported
1598 relocation" error when loading some modules.
1599
1600 Until fixed tools are available, passing
1601 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1602 code which hits this problem, at the cost of a bit of extra runtime
1603 stack usage in some cases.
1604
1605 The problem is described in more detail at:
1606 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1607
1608 Only Thumb-2 kernels are affected.
1609
1610 Unless you are sure your tools don't have this problem, say Y.
1611
Catalin Marinas0becb082009-07-24 12:32:53 +01001612config ARM_ASM_UNIFIED
1613 bool
1614
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001615config AEABI
1616 bool "Use the ARM EABI to compile the kernel"
1617 help
1618 This option allows for the kernel to be compiled using the latest
1619 ARM ABI (aka EABI). This is only useful if you are using a user
1620 space environment that is also compiled with EABI.
1621
1622 Since there are major incompatibilities between the legacy ABI and
1623 EABI, especially with regard to structure member alignment, this
1624 option also changes the kernel syscall calling convention to
1625 disambiguate both ABIs and allow for backward compatibility support
1626 (selected with CONFIG_OABI_COMPAT).
1627
1628 To use this you need GCC version 4.0.0 or later.
1629
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001630config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001631 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001632 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001633 help
1634 This option preserves the old syscall interface along with the
1635 new (ARM EABI) one. It also provides a compatibility layer to
1636 intercept syscalls that have structure arguments which layout
1637 in memory differs between the legacy ABI and the new ARM EABI
1638 (only for non "thumb" binaries). This option adds a tiny
1639 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001640
1641 The seccomp filter system will not be available when this is
1642 selected, since there is no way yet to sensibly distinguish
1643 between calling conventions during filtering.
1644
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001645 If you know you'll be using only pure EABI user space then you
1646 can say N here. If this option is not selected and you attempt
1647 to execute a legacy ABI binary then the result will be
1648 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001649 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001650
Mel Gormaneb335752009-05-13 17:34:48 +01001651config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001652 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001653
Russell King05944d72006-11-30 20:43:51 +00001654config ARCH_SPARSEMEM_ENABLE
1655 bool
1656
Russell King07a2f732008-10-01 21:39:58 +01001657config ARCH_SPARSEMEM_DEFAULT
1658 def_bool ARCH_SPARSEMEM_ENABLE
1659
Russell King05944d72006-11-30 20:43:51 +00001660config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001661 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001662
Will Deacon7b7bf492011-05-19 13:21:14 +01001663config HAVE_ARCH_PFN_VALID
1664 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1665
Steve Capperb8cd51a2014-10-09 15:29:20 -07001666config HAVE_GENERIC_RCU_GUP
1667 def_bool y
1668 depends on ARM_LPAE
1669
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001670config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001671 bool "High Memory Support"
1672 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001673 help
1674 The address space of ARM processors is only 4 Gigabytes large
1675 and it has to accommodate user address space, kernel address
1676 space as well as some memory mapped IO. That means that, if you
1677 have a large amount of physical memory and/or IO, not all of the
1678 memory can be "permanently mapped" by the kernel. The physical
1679 memory that is not permanently mapped is called "high memory".
1680
1681 Depending on the selected kernel/user memory split, minimum
1682 vmalloc space and actual amount of RAM, you may not need this
1683 option which should result in a slightly faster kernel.
1684
1685 If unsure, say n.
1686
Russell King65cec8e2009-08-17 20:02:06 +01001687config HIGHPTE
1688 bool "Allocate 2nd-level pagetables from highmem"
1689 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001690
Jamie Iles1b8873a2010-02-02 20:25:44 +01001691config HW_PERF_EVENTS
1692 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001693 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001694 default y
1695 help
1696 Enable hardware performance counter support for perf events. If
1697 disabled, perf events will use software events only.
1698
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001699config SYS_SUPPORTS_HUGETLBFS
1700 def_bool y
1701 depends on ARM_LPAE
1702
Catalin Marinas8d962502012-07-25 14:39:26 +01001703config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1704 def_bool y
1705 depends on ARM_LPAE
1706
Steven Capper4bfab202013-07-26 14:58:22 +01001707config ARCH_WANT_GENERAL_HUGETLB
1708 def_bool y
1709
Dave Hansen3f22ab22005-06-23 00:07:43 -07001710source "mm/Kconfig"
1711
Magnus Dammc1b2d972010-07-05 10:00:11 +01001712config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001713 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1714 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001715 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001716 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001717 default "11"
1718 help
1719 The kernel memory allocator divides physically contiguous memory
1720 blocks into "zones", where each zone is a power of two number of
1721 pages. This option selects the largest power of two that the kernel
1722 keeps in the memory allocator. If you need to allocate very large
1723 blocks of physically contiguous memory, then you may need to
1724 increase this value.
1725
1726 This config option is actually maximum order plus one. For example,
1727 a value of 11 means that the largest free memory block is 2^10 pages.
1728
Linus Torvalds1da177e2005-04-16 15:20:36 -07001729config ALIGNMENT_TRAP
1730 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001731 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001732 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001733 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001735 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1737 address divisible by 4. On 32-bit ARM processors, these non-aligned
1738 fetch/store instructions will be emulated in software if you say
1739 here, which has a severe performance impact. This is necessary for
1740 correct operation of some network protocols. With an IP-only
1741 configuration it is safe to say N, otherwise say Y.
1742
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001743config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001744 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1745 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001746 default y if CPU_FEROCEON
1747 help
1748 Implement faster copy_to_user and clear_user methods for CPU
1749 cores where a 8-word STM instruction give significantly higher
1750 memory write throughput than a sequence of individual 32bit stores.
1751
1752 A possible side effect is a slight increase in scheduling latency
1753 between threads sharing the same address space if they invoke
1754 such copy operations with large buffers.
1755
1756 However, if the CPU data cache is using a write-allocate mode,
1757 this option is unlikely to provide any performance gain.
1758
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001759config SECCOMP
1760 bool
1761 prompt "Enable seccomp to safely compute untrusted bytecode"
1762 ---help---
1763 This kernel feature is useful for number crunching applications
1764 that may need to compute untrusted bytecode during their
1765 execution. By using pipes or other transports made available to
1766 the process as file descriptors supporting the read/write
1767 syscalls, it's possible to isolate those applications in
1768 their own address space using seccomp. Once seccomp is
1769 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1770 and the task is only allowed to execute a few safe syscalls
1771 defined by each seccomp mode.
1772
Stefano Stabellini06e62952013-10-15 15:47:14 +00001773config SWIOTLB
1774 def_bool y
1775
1776config IOMMU_HELPER
1777 def_bool SWIOTLB
1778
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001779config XEN_DOM0
1780 def_bool y
1781 depends on XEN
1782
1783config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001784 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001785 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001786 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001787 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001788 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001789 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001790 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001791 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001792 help
1793 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1794
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795endmenu
1796
1797menu "Boot options"
1798
Grant Likely9eb8f672011-04-28 14:27:20 -06001799config USE_OF
1800 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001801 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001802 select OF
1803 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001804 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001805 help
1806 Include support for flattened device tree machine descriptions.
1807
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001808config ATAGS
1809 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1810 default y
1811 help
1812 This is the traditional way of passing data to the kernel at boot
1813 time. If you are solely relying on the flattened device tree (or
1814 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1815 to remove ATAGS support from your kernel binary. If unsure,
1816 leave this to y.
1817
1818config DEPRECATED_PARAM_STRUCT
1819 bool "Provide old way to pass kernel parameters"
1820 depends on ATAGS
1821 help
1822 This was deprecated in 2001 and announced to live on for 5 years.
1823 Some old boot loaders still use this way.
1824
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825# Compressed boot loader in ROM. Yes, we really want to ask about
1826# TEXT and BSS so we preserve their values in the config files.
1827config ZBOOT_ROM_TEXT
1828 hex "Compressed ROM boot loader base address"
1829 default "0"
1830 help
1831 The physical address at which the ROM-able zImage is to be
1832 placed in the target. Platforms which normally make use of
1833 ROM-able zImage formats normally set this to a suitable
1834 value in their defconfig file.
1835
1836 If ZBOOT_ROM is not enabled, this has no effect.
1837
1838config ZBOOT_ROM_BSS
1839 hex "Compressed ROM boot loader BSS address"
1840 default "0"
1841 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001842 The base address of an area of read/write memory in the target
1843 for the ROM-able zImage which must be available while the
1844 decompressor is running. It must be large enough to hold the
1845 entire decompressed kernel plus an additional 128 KiB.
1846 Platforms which normally make use of ROM-able zImage formats
1847 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001848
1849 If ZBOOT_ROM is not enabled, this has no effect.
1850
1851config ZBOOT_ROM
1852 bool "Compressed boot loader in ROM/flash"
1853 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001854 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855 help
1856 Say Y here if you intend to execute your compressed kernel image
1857 (zImage) directly from ROM or flash. If unsure, say N.
1858
Simon Horman090ab3f2011-04-26 06:29:53 +01001859choice
1860 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001861 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001862 default ZBOOT_ROM_NONE
1863 help
1864 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001865 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001866 kernel image to an MMC or SD card and boot the kernel straight
1867 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001868 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001869 rest the kernel image to RAM.
1870
1871config ZBOOT_ROM_NONE
1872 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1873 help
1874 Do not load image from SD or MMC
1875
Simon Hormanf45b1142011-01-11 04:01:08 +01001876config ZBOOT_ROM_MMCIF
1877 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001878 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001879 Load image from MMCIF hardware block.
1880
1881config ZBOOT_ROM_SH_MOBILE_SDHI
1882 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1883 help
1884 Load image from SDHI hardware block
1885
1886endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001887
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001888config ARM_APPENDED_DTB
1889 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001890 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001891 help
1892 With this option, the boot code will look for a device tree binary
1893 (DTB) appended to zImage
1894 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1895
1896 This is meant as a backward compatibility convenience for those
1897 systems with a bootloader that can't be upgraded to accommodate
1898 the documented boot protocol using a device tree.
1899
1900 Beware that there is very little in terms of protection against
1901 this option being confused by leftover garbage in memory that might
1902 look like a DTB header after a reboot if no actual DTB is appended
1903 to zImage. Do not leave this option active in a production kernel
1904 if you don't intend to always append a DTB. Proper passing of the
1905 location into r2 of a bootloader provided DTB is always preferable
1906 to this option.
1907
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001908config ARM_ATAG_DTB_COMPAT
1909 bool "Supplement the appended DTB with traditional ATAG information"
1910 depends on ARM_APPENDED_DTB
1911 help
1912 Some old bootloaders can't be updated to a DTB capable one, yet
1913 they provide ATAGs with memory configuration, the ramdisk address,
1914 the kernel cmdline string, etc. Such information is dynamically
1915 provided by the bootloader and can't always be stored in a static
1916 DTB. To allow a device tree enabled kernel to be used with such
1917 bootloaders, this option allows zImage to extract the information
1918 from the ATAG list and store it at run time into the appended DTB.
1919
Genoud Richardd0f34a112012-06-26 16:37:59 +01001920choice
1921 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1922 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1923
1924config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1925 bool "Use bootloader kernel arguments if available"
1926 help
1927 Uses the command-line options passed by the boot loader instead of
1928 the device tree bootargs property. If the boot loader doesn't provide
1929 any, the device tree bootargs property will be used.
1930
1931config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1932 bool "Extend with bootloader kernel arguments"
1933 help
1934 The command-line arguments provided by the boot loader will be
1935 appended to the the device tree bootargs property.
1936
1937endchoice
1938
Linus Torvalds1da177e2005-04-16 15:20:36 -07001939config CMDLINE
1940 string "Default kernel command string"
1941 default ""
1942 help
1943 On some architectures (EBSA110 and CATS), there is currently no way
1944 for the boot loader to pass arguments to the kernel. For these
1945 architectures, you should supply some command-line options at build
1946 time by entering them here. As a minimum, you should specify the
1947 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1948
Victor Boivie4394c122011-05-04 17:07:55 +01001949choice
1950 prompt "Kernel command line type" if CMDLINE != ""
1951 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001952 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001953
1954config CMDLINE_FROM_BOOTLOADER
1955 bool "Use bootloader kernel arguments if available"
1956 help
1957 Uses the command-line options passed by the boot loader. If
1958 the boot loader doesn't provide any, the default kernel command
1959 string provided in CMDLINE will be used.
1960
1961config CMDLINE_EXTEND
1962 bool "Extend bootloader kernel arguments"
1963 help
1964 The command-line arguments provided by the boot loader will be
1965 appended to the default kernel command string.
1966
Alexander Holler92d20402010-02-16 19:04:53 +01001967config CMDLINE_FORCE
1968 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001969 help
1970 Always use the default kernel command string, even if the boot
1971 loader passes other arguments to the kernel.
1972 This is useful if you cannot or don't want to change the
1973 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001974endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001975
Linus Torvalds1da177e2005-04-16 15:20:36 -07001976config XIP_KERNEL
1977 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001978 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979 help
1980 Execute-In-Place allows the kernel to run from non-volatile storage
1981 directly addressable by the CPU, such as NOR flash. This saves RAM
1982 space since the text section of the kernel is not loaded from flash
1983 to RAM. Read-write sections, such as the data section and stack,
1984 are still copied to RAM. The XIP kernel is not compressed since
1985 it has to run directly from flash, so it will take more space to
1986 store it. The flash address used to link the kernel object files,
1987 and for storing it, is configuration dependent. Therefore, if you
1988 say Y here, you must know the proper physical address where to
1989 store the kernel image depending on your own flash memory usage.
1990
1991 Also note that the make target becomes "make xipImage" rather than
1992 "make zImage" or "make Image". The final kernel binary to put in
1993 ROM memory will be arch/arm/boot/xipImage.
1994
1995 If unsure, say N.
1996
1997config XIP_PHYS_ADDR
1998 hex "XIP Kernel Physical Location"
1999 depends on XIP_KERNEL
2000 default "0x00080000"
2001 help
2002 This is the physical address in your flash memory the kernel will
2003 be linked for and stored to. This address is dependent on your
2004 own flash usage.
2005
Richard Purdiec587e4a2007-02-06 21:29:00 +01002006config KEXEC
2007 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002008 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002009 help
2010 kexec is a system call that implements the ability to shutdown your
2011 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002012 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002013 you can start any kernel with it, not just Linux.
2014
2015 It is an ongoing process to be certain the hardware in a machine
2016 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002017 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002018
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002019config ATAGS_PROC
2020 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002021 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002022 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002023 help
2024 Should the atags used to boot the kernel be exported in an "atags"
2025 file in procfs. Useful with kexec.
2026
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002027config CRASH_DUMP
2028 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002029 help
2030 Generate crash dump after being started by kexec. This should
2031 be normally only set in special crash dump kernels which are
2032 loaded in the main kernel with kexec-tools into a specially
2033 reserved region and then later executed after a crash by
2034 kdump/kexec. The crash dump kernel must be compiled to a
2035 memory address not used by the main kernel
2036
2037 For more details see Documentation/kdump/kdump.txt
2038
Eric Miaoe69edc792010-07-05 15:56:50 +02002039config AUTO_ZRELADDR
2040 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002041 help
2042 ZRELADDR is the physical address where the decompressed kernel
2043 image will be placed. If AUTO_ZRELADDR is selected, the address
2044 will be determined at run-time by masking the current IP with
2045 0xf8000000. This assumes the zImage being placed in the first 128MB
2046 from start of memory.
2047
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048endmenu
2049
Russell Kingac9d7ef2008-08-18 17:26:00 +01002050menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002053
Russell Kingac9d7ef2008-08-18 17:26:00 +01002054source "drivers/cpuidle/Kconfig"
2055
2056endmenu
2057
Linus Torvalds1da177e2005-04-16 15:20:36 -07002058menu "Floating point emulation"
2059
2060comment "At least one emulation must be selected"
2061
2062config FPE_NWFPE
2063 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002064 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065 ---help---
2066 Say Y to include the NWFPE floating point emulator in the kernel.
2067 This is necessary to run most binaries. Linux does not currently
2068 support floating point hardware so you need to say Y here even if
2069 your machine has an FPA or floating point co-processor podule.
2070
2071 You may say N here if you are going to load the Acorn FPEmulator
2072 early in the bootup.
2073
2074config FPE_NWFPE_XP
2075 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002076 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 help
2078 Say Y to include 80-bit support in the kernel floating-point
2079 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2080 Note that gcc does not generate 80-bit operations by default,
2081 so in most cases this option only enlarges the size of the
2082 floating point emulator without any good reason.
2083
2084 You almost surely want to say N here.
2085
2086config FPE_FASTFPE
2087 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002088 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 ---help---
2090 Say Y here to include the FAST floating point emulator in the kernel.
2091 This is an experimental much faster emulator which now also has full
2092 precision for the mantissa. It does not support any exceptions.
2093 It is very simple, and approximately 3-6 times faster than NWFPE.
2094
2095 It should be sufficient for most programs. It may be not suitable
2096 for scientific calculations, but you have to check this for yourself.
2097 If you do not feel you need a faster FP emulation you should better
2098 choose NWFPE.
2099
2100config VFP
2101 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002102 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 help
2104 Say Y to include VFP support code in the kernel. This is needed
2105 if your hardware includes a VFP unit.
2106
2107 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2108 release notes and additional status information.
2109
2110 Say N if your target does not have VFP hardware.
2111
Catalin Marinas25ebee02007-09-25 15:22:24 +01002112config VFPv3
2113 bool
2114 depends on VFP
2115 default y if CPU_V7
2116
Catalin Marinasb5872db2008-01-10 19:16:17 +01002117config NEON
2118 bool "Advanced SIMD (NEON) Extension support"
2119 depends on VFPv3 && CPU_V7
2120 help
2121 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2122 Extension.
2123
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002124config KERNEL_MODE_NEON
2125 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002126 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002127 help
2128 Say Y to include support for NEON in kernel mode.
2129
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130endmenu
2131
2132menu "Userspace binary formats"
2133
2134source "fs/Kconfig.binfmt"
2135
2136config ARTHUR
2137 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002138 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002139 help
2140 Say Y here to include the kernel code necessary if you want to run
2141 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2142 experimental; if this sounds frightening, say N and sleep in peace.
2143 You can also say M here to compile this support as a module (which
2144 will be called arthur).
2145
2146endmenu
2147
2148menu "Power management options"
2149
Russell Kingeceab4a2005-11-15 11:31:41 +00002150source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151
Johannes Bergf4cb5702007-12-08 02:14:00 +01002152config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002153 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002154 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002155 def_bool y
2156
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002157config ARM_CPU_SUSPEND
2158 def_bool PM_SLEEP
2159
Sebastian Capella603fb422014-03-25 01:20:29 +01002160config ARCH_HIBERNATION_POSSIBLE
2161 bool
2162 depends on MMU
2163 default y if ARCH_SUSPEND_POSSIBLE
2164
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165endmenu
2166
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002167source "net/Kconfig"
2168
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002169source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002170
2171source "fs/Kconfig"
2172
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173source "arch/arm/Kconfig.debug"
2174
2175source "security/Kconfig"
2176
2177source "crypto/Kconfig"
2178
2179source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002180
2181source "arch/arm/kvm/Kconfig"