blob: 2075ebdccf5d3832c90fcb6da1a0321ca000b808 [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_REALVIEW
324 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100325 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100326 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100327 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200328 select COMMON_CLK
329 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100330 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100331 select GPIO_PL061 if GPIOLIB
332 select ICST
333 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000334 select PLAT_VERSATILE
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100335 help
336 This enables support for ARM Ltd RealView boards.
337
338config ARCH_VERSATILE
339 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100340 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100341 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100342 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100343 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100344 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100345 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900346 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000347 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000348 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100349 select PLAT_VERSATILE_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100350 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100351 help
352 This enables support for ARM Ltd Versatile board.
353
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100354config ARCH_AT91
355 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100356 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100357 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100358 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500359 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800360 select PINCTRL
361 select PINCTRL_AT91 if USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100362 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100363 This enables support for systems based on Atmel
364 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100365
Russell King93e22562012-10-12 14:20:52 +0100366config ARCH_CLPS711X
367 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400368 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400369 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400370 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100371 select COMMON_CLK
372 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400373 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400374 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400375 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100376 help
377 Support for Cirrus Logic 711x/721x/731x based boards.
378
Russell King788c9702009-04-26 14:21:59 +0100379config ARCH_GEMINI
380 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100381 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200382 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100383 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200384 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100385 help
386 Support for the Cortina Systems Gemini family SoCs
387
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388config ARCH_EBSA110
389 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100390 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000391 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100392 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600393 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400394 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700395 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 help
397 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000398 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 Ethernet interface, two PCMCIA sockets, two serial ports and a
400 parallel port.
401
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100402config ARCH_EFM32
403 bool "Energy Micro efm32"
404 depends on !MMU
405 select ARCH_REQUIRE_GPIOLIB
406 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100407 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100408 select CLKSRC_OF
409 select COMMON_CLK
410 select CPU_V7M
411 select GENERIC_CLOCKEVENTS
412 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700413 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100414 select SPARSE_IRQ
415 select USE_OF
416 help
417 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
418 processors.
419
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000420config ARCH_EP93XX
421 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100422 select ARCH_HAS_HOLES_MEMORYMODEL
423 select ARCH_REQUIRE_GPIOLIB
424 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000425 select ARM_AMBA
426 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100427 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100428 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000429 help
430 This enables support for the Cirrus EP93xx series of CPUs.
431
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432config ARCH_FOOTBRIDGE
433 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000434 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000436 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200437 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600438 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400439 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000440 help
441 Support for systems based on the DC21285 companion chip
442 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100444config ARCH_NETX
445 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100446 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100447 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000448 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100449 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000450 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100451 This enables support for systems based on the Hilscher NetX Soc
452
Russell King3b938be2007-05-12 11:25:44 +0100453config ARCH_IOP13XX
454 bool "IOP13xx-based"
455 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100456 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400457 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600458 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100459 select PCI
460 select PLAT_IOP
461 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000462 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100463 help
464 Support for Intel's IOP13XX (XScale) family of processors.
465
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100466config ARCH_IOP32X
467 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100468 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100469 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000470 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200471 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600472 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100473 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100474 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000475 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100476 Support for Intel's 80219 and IOP32X (XScale) family of
477 processors.
478
479config ARCH_IOP33X
480 bool "IOP33x-based"
481 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100482 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000483 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200484 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600485 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100486 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100487 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100488 help
489 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
Russell King3b938be2007-05-12 11:25:44 +0100491config ARCH_IXP4XX
492 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100493 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500494 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100495 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100496 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100497 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000498 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100499 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100500 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100501 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600502 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200503 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100504 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100505 help
Russell King3b938be2007-05-12 11:25:44 +0100506 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100507
Saeed Bisharaedabd382009-08-06 15:12:43 +0300508config ARCH_DOVE
509 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300510 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100511 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300512 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100513 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100514 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100515 select PINCTRL
516 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200517 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300518 help
519 Support for the Marvell Dove SoC 88AP510
520
Russell King788c9702009-04-26 14:21:59 +0100521config ARCH_MV78XX0
522 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700523 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100524 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100525 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100526 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100527 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200528 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100529 help
530 Support for the following Marvell MV78xx0 series SoCs:
531 MV781x0, MV782x0.
532
533config ARCH_ORION5X
534 bool "Marvell Orion"
535 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700536 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100537 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100538 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100539 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100540 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200541 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100542 help
543 Support for the following Marvell Orion 5x series SoCs:
544 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
545 Orion-2 (5281), Orion-1-90 (6183).
546
547config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500548 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100549 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100550 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100551 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100552 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100553 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800554 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800555 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800556 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800557 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100558 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400559 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100560 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500561 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100562
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100563config ARCH_KS8695
564 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100565 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200566 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100567 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200568 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100569 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100570 help
571 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
572 System-on-Chip devices.
573
Russell King788c9702009-04-26 14:21:59 +0100574config ARCH_W90X900
575 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100576 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100577 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100578 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100579 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100580 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200581 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100582 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
583 At present, the w90x900 has been renamed nuc900, regarding
584 the ARM series product line, you can login the following
585 link address to know more.
586
587 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
588 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400589
Russell King93e22562012-10-12 14:20:52 +0100590config ARCH_LPC32XX
591 bool "NXP LPC32XX"
592 select ARCH_REQUIRE_GPIOLIB
593 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000594 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100595 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100596 select CPU_ARM926T
597 select GENERIC_CLOCKEVENTS
598 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100599 select USE_OF
600 help
601 Support for the NXP LPC32XX family of processors
602
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700604 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100605 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100606 select ARCH_MTD_XIP
607 select ARCH_REQUIRE_GPIOLIB
608 select ARM_CPU_SUSPEND if PM
609 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100610 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100611 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200612 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100613 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800614 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100615 select HAVE_IDE
616 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800617 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800618 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000619 help
eric miao2c8086a2007-09-11 19:13:17 -0700620 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600622config ARCH_MSM
623 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700624 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700625 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100626 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800627 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800628 Support for Qualcomm MSM/QSD based systems. This runs on the
629 apps processor of the MSM/QSD and depends on a shared memory
630 interface to the modem processor which runs the baseband
631 stack and controls some vital subsystems
632 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800633
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100634config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100635 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100636 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100637 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900638 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900639 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100640 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800641 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc22013-02-15 16:02:20 -0800642 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900643 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000644 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000645 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000646 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700647 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200648 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100649 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900650 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100651 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000652 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100653 Support for Renesas ARM SoC platforms using a non-multiplatform
654 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
655 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000656
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657config ARCH_RPC
658 bool "RiscPC"
659 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100660 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100661 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000662 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100663 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100664 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200665 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100666 select HAVE_PATA_PLATFORM
667 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600668 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400669 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700670 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100671 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 help
673 On the Acorn Risc-PC, Linux can support the internal IDE disk and
674 CD-ROM interface, serial and parallel port, and the floppy drive.
675
676config ARCH_SA1100
677 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100678 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700679 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100680 select ARCH_SPARSEMEM_ENABLE
681 select CLKDEV_LOOKUP
682 select CLKSRC_MMIO
683 select CPU_FREQ
684 select CPU_SA1100
685 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200686 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100687 select ISA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400688 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100689 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000690 help
691 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900693config ARCH_S3C24XX
694 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900695 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100696 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100697 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200698 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800699 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900700 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900701 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900702 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100703 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900704 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600705 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900706 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900708 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
709 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
710 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
711 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900712
Ben Dooksa08ab632008-10-21 14:06:39 +0100713config ARCH_S3C64XX
714 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900715 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200716 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100717 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100718 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100719 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200720 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900721 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900722 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800723 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900724 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900725 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900726 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100727 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700728 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100729 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100730 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100731 select S3C_DEV_NAND
732 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900733 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900734 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900735 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100736 help
737 Samsung S3C64XX series based systems
738
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100739config ARCH_DAVINCI
740 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100741 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700742 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100743 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700744 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100745 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100746 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100747 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500748 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530749 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100750 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100751 help
752 Support for TI's DaVinci platform.
753
Tony Lindgrena0694862013-01-11 11:24:20 -0800754config ARCH_OMAP1
755 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600756 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100757 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800758 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100759 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200760 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100761 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100762 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800763 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800764 select HAVE_IDE
765 select IRQ_DOMAIN
766 select NEED_MACH_IO_H if PCCARD
767 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100768 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800769 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800770
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771endchoice
772
Rob Herring387798b2012-09-06 13:41:12 -0500773menu "Multiple platform selection"
774 depends on ARCH_MULTIPLATFORM
775
776comment "CPU Core family selection"
777
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100778config ARCH_MULTI_V4
779 bool "ARMv4 based platforms (FA526)"
780 depends on !ARCH_MULTI_V6_V7
781 select ARCH_MULTI_V4_V5
782 select CPU_FA526
783
Rob Herring387798b2012-09-06 13:41:12 -0500784config ARCH_MULTI_V4T
785 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500786 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100787 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200788 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
789 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
790 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500791
792config ARCH_MULTI_V5
793 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500794 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100795 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100796 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200797 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
798 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500799
800config ARCH_MULTI_V4_V5
801 bool
802
803config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800804 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500805 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600806 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500807
808config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800809 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500810 default y
811 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100812 select CPU_V7
Rob Herring90bc8ac72014-01-31 15:32:02 -0600813 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500814
815config ARCH_MULTI_V6_V7
816 bool
Rob Herring9352b052014-01-31 15:36:10 -0600817 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500818
819config ARCH_MULTI_CPU_AUTO
820 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
821 select ARCH_MULTI_V5
822
823endmenu
824
Rob Herring05e2a3d2013-12-05 10:04:54 -0600825config ARCH_VIRT
826 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600827 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600828 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600829 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600830 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600831
Russell Kingccf50e22010-03-15 19:03:06 +0000832#
833# This is sorted alphabetically by mach-* pathname. However, plat-*
834# Kconfigs may be included either alphabetically (according to the
835# plat- suffix) or along side the corresponding mach-* source.
836#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200837source "arch/arm/mach-mvebu/Kconfig"
838
Russell King95b8f202010-01-14 11:43:54 +0000839source "arch/arm/mach-at91/Kconfig"
840
Anders Berg1d22924e2014-05-23 11:08:35 +0200841source "arch/arm/mach-axxia/Kconfig"
842
Christian Daudt8ac49e02012-11-19 09:46:10 -0800843source "arch/arm/mach-bcm/Kconfig"
844
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200845source "arch/arm/mach-berlin/Kconfig"
846
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847source "arch/arm/mach-clps711x/Kconfig"
848
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300849source "arch/arm/mach-cns3xxx/Kconfig"
850
Russell King95b8f202010-01-14 11:43:54 +0000851source "arch/arm/mach-davinci/Kconfig"
852
853source "arch/arm/mach-dove/Kconfig"
854
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000855source "arch/arm/mach-ep93xx/Kconfig"
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857source "arch/arm/mach-footbridge/Kconfig"
858
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200859source "arch/arm/mach-gemini/Kconfig"
860
Rob Herring387798b2012-09-06 13:41:12 -0500861source "arch/arm/mach-highbank/Kconfig"
862
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800863source "arch/arm/mach-hisi/Kconfig"
864
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865source "arch/arm/mach-integrator/Kconfig"
866
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100867source "arch/arm/mach-iop32x/Kconfig"
868
869source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
Dan Williams285f5fa2006-12-07 02:59:39 +0100871source "arch/arm/mach-iop13xx/Kconfig"
872
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873source "arch/arm/mach-ixp4xx/Kconfig"
874
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400875source "arch/arm/mach-keystone/Kconfig"
876
Russell King95b8f202010-01-14 11:43:54 +0000877source "arch/arm/mach-ks8695/Kconfig"
878
Carlo Caione3b8f5032014-09-10 22:16:59 +0200879source "arch/arm/mach-meson/Kconfig"
880
Russell King95b8f202010-01-14 11:43:54 +0000881source "arch/arm/mach-msm/Kconfig"
882
Jonas Jensen17723fd32013-12-18 13:58:45 +0100883source "arch/arm/mach-moxart/Kconfig"
884
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200885source "arch/arm/mach-mv78xx0/Kconfig"
886
Shawn Guo3995eb82012-09-13 19:48:07 +0800887source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888
Matthias Bruggerf682a212014-05-13 01:06:13 +0200889source "arch/arm/mach-mediatek/Kconfig"
890
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800891source "arch/arm/mach-mxs/Kconfig"
892
Russell King95b8f202010-01-14 11:43:54 +0000893source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800894
Russell King95b8f202010-01-14 11:43:54 +0000895source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000896
Daniel Tang9851ca52013-06-11 18:40:17 +1000897source "arch/arm/mach-nspire/Kconfig"
898
Tony Lindgrend48af152005-07-10 19:58:17 +0100899source "arch/arm/plat-omap/Kconfig"
900
901source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902
Tony Lindgren1dbae812005-11-10 14:26:51 +0000903source "arch/arm/mach-omap2/Kconfig"
904
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400905source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400906
Rob Herring387798b2012-09-06 13:41:12 -0500907source "arch/arm/mach-picoxcell/Kconfig"
908
Russell King95b8f202010-01-14 11:43:54 +0000909source "arch/arm/mach-pxa/Kconfig"
910source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911
Russell King95b8f202010-01-14 11:43:54 +0000912source "arch/arm/mach-mmp/Kconfig"
913
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600914source "arch/arm/mach-qcom/Kconfig"
915
Russell King95b8f202010-01-14 11:43:54 +0000916source "arch/arm/mach-realview/Kconfig"
917
Heiko Stuebnerd63dc0512013-06-02 23:09:41 +0200918source "arch/arm/mach-rockchip/Kconfig"
919
Russell King95b8f202010-01-14 11:43:54 +0000920source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300921
Rob Herring387798b2012-09-06 13:41:12 -0500922source "arch/arm/mach-socfpga/Kconfig"
923
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100924source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100925
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100926source "arch/arm/mach-sti/Kconfig"
927
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900928source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929
Ben Dooks431107e2010-01-26 10:11:04 +0900930source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100931
Kukjin Kim170f4e42010-02-24 16:40:44 +0900932source "arch/arm/mach-s5pv210/Kconfig"
933
Kukjin Kim83014572011-11-06 13:54:56 +0900934source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500935source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900936
Russell King882d01f2010-03-02 23:40:15 +0000937source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938
Maxime Ripard3b526342012-11-08 12:40:16 +0100939source "arch/arm/mach-sunxi/Kconfig"
940
Barry Song156a0992012-08-23 13:41:58 +0800941source "arch/arm/mach-prima2/Kconfig"
942
Erik Gillingc5f80062010-01-21 16:53:02 -0800943source "arch/arm/mach-tegra/Kconfig"
944
Russell King95b8f202010-01-14 11:43:54 +0000945source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946
Russell King95b8f202010-01-14 11:43:54 +0000947source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948
949source "arch/arm/mach-versatile/Kconfig"
950
Russell Kingceade892010-02-11 21:44:53 +0000951source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000952source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000953
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300954source "arch/arm/mach-vt8500/Kconfig"
955
wanzongshun7ec80dd2008-12-03 03:55:38 +0100956source "arch/arm/mach-w90x900/Kconfig"
957
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600958source "arch/arm/mach-zynq/Kconfig"
959
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960# Definitions to make life easier
961config ARCH_ACORN
962 bool
963
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +0100964config PLAT_IOP
965 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700966 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7ec2006-09-18 23:12:53 +0100967
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400968config PLAT_ORION
969 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100970 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100971 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100972 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200973 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400974
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200975config PLAT_ORION_LEGACY
976 bool
977 select PLAT_ORION
978
Eric Miaobd5ce432009-01-20 12:06:01 +0800979config PLAT_PXA
980 bool
981
Russell Kingf4b8b312010-01-14 12:48:06 +0000982config PLAT_VERSATILE
983 bool
984
Russell Kinge3887712010-01-14 13:30:16 +0000985config ARM_TIMER_SP804
986 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100987 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -0500988 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +0000989
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900990source "arch/arm/firmware/Kconfig"
991
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992source arch/arm/mm/Kconfig
993
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100994config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +0100995 bool "Enable iWMMXt support"
996 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
997 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100998 help
999 Enable support for iWMMXt context switching at run time if
1000 running on a CPU that supports it.
1001
eric miao52108642010-12-13 09:42:34 +01001002config MULTI_IRQ_HANDLER
1003 bool
1004 help
1005 Allow each machine to specify it's own IRQ handler at run time.
1006
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001007if !MMU
1008source "arch/arm/Kconfig-nommu"
1009endif
1010
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001011config PJ4B_ERRATA_4742
1012 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1013 depends on CPU_PJ4B && MACH_ARMADA_370
1014 default y
1015 help
1016 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1017 Event (WFE) IDLE states, a specific timing sensitivity exists between
1018 the retiring WFI/WFE instructions and the newly issued subsequent
1019 instructions. This sensitivity can result in a CPU hang scenario.
1020 Workaround:
1021 The software must insert either a Data Synchronization Barrier (DSB)
1022 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1023 instruction
1024
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001025config ARM_ERRATA_326103
1026 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1027 depends on CPU_V6
1028 help
1029 Executing a SWP instruction to read-only memory does not set bit 11
1030 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1031 treat the access as a read, preventing a COW from occurring and
1032 causing the faulting task to livelock.
1033
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001034config ARM_ERRATA_411920
1035 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001036 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001037 help
1038 Invalidation of the Instruction Cache operation can
1039 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1040 It does not affect the MPCore. This option enables the ARM Ltd.
1041 recommended workaround.
1042
Catalin Marinas7ce236fc2009-04-30 17:06:09 +01001043config ARM_ERRATA_430973
1044 bool "ARM errata: Stale prediction on replaced interworking branch"
1045 depends on CPU_V7
1046 help
1047 This option enables the workaround for the 430973 Cortex-A8
1048 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1049 interworking branch is replaced with another code sequence at the
1050 same virtual address, whether due to self-modifying code or virtual
1051 to physical address re-mapping, Cortex-A8 does not recover from the
1052 stale interworking branch prediction. This results in Cortex-A8
1053 executing the new code sequence in the incorrect ARM or Thumb state.
1054 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1055 and also flushes the branch target cache at every context switch.
1056 Note that setting specific bits in the ACTLR register may not be
1057 available in non-secure mode.
1058
Catalin Marinas855c5512009-04-30 17:06:15 +01001059config ARM_ERRATA_458693
1060 bool "ARM errata: Processor deadlock when a false hazard is created"
1061 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001062 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001063 help
1064 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1065 erratum. For very specific sequences of memory operations, it is
1066 possible for a hazard condition intended for a cache line to instead
1067 be incorrectly associated with a different cache line. This false
1068 hazard might then cause a processor deadlock. The workaround enables
1069 the L1 caching of the NEON accesses and disables the PLD instruction
1070 in the ACTLR register. Note that setting specific bits in the ACTLR
1071 register may not be available in non-secure mode.
1072
Catalin Marinas0516e462009-04-30 17:06:20 +01001073config ARM_ERRATA_460075
1074 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1075 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001076 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001077 help
1078 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1079 erratum. Any asynchronous access to the L2 cache may encounter a
1080 situation in which recent store transactions to the L2 cache are lost
1081 and overwritten with stale memory contents from external memory. The
1082 workaround disables the write-allocate mode for the L2 cache via the
1083 ACTLR register. Note that setting specific bits in the ACTLR register
1084 may not be available in non-secure mode.
1085
Will Deacon9f050272010-09-14 09:51:43 +01001086config ARM_ERRATA_742230
1087 bool "ARM errata: DMB operation may be faulty"
1088 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001089 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001090 help
1091 This option enables the workaround for the 742230 Cortex-A9
1092 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1093 between two write operations may not ensure the correct visibility
1094 ordering of the two writes. This workaround sets a specific bit in
1095 the diagnostic register of the Cortex-A9 which causes the DMB
1096 instruction to behave as a DSB, ensuring the correct behaviour of
1097 the two writes.
1098
Will Deacona672e992010-09-14 09:53:02 +01001099config ARM_ERRATA_742231
1100 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1101 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001102 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001103 help
1104 This option enables the workaround for the 742231 Cortex-A9
1105 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1106 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1107 accessing some data located in the same cache line, may get corrupted
1108 data due to bad handling of the address hazard when the line gets
1109 replaced from one of the CPUs at the same time as another CPU is
1110 accessing it. This workaround sets specific bits in the diagnostic
1111 register of the Cortex-A9 which reduces the linefill issuing
1112 capabilities of the processor.
1113
Jon Medhurst69155792013-06-07 10:35:35 +01001114config ARM_ERRATA_643719
1115 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1116 depends on CPU_V7 && SMP
1117 help
1118 This option enables the workaround for the 643719 Cortex-A9 (prior to
1119 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1120 register returns zero when it should return one. The workaround
1121 corrects this value, ensuring cache maintenance operations which use
1122 it behave as intended and avoiding data corruption.
1123
Will Deaconcdf357f2010-08-05 11:20:51 +01001124config ARM_ERRATA_720789
1125 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001126 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001127 help
1128 This option enables the workaround for the 720789 Cortex-A9 (prior to
1129 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1130 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1131 As a consequence of this erratum, some TLB entries which should be
1132 invalidated are not, resulting in an incoherency in the system page
1133 tables. The workaround changes the TLB flushing routines to invalidate
1134 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001135
1136config ARM_ERRATA_743622
1137 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1138 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001139 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001140 help
1141 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001142 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001143 optimisation in the Cortex-A9 Store Buffer may lead to data
1144 corruption. This workaround sets a specific bit in the diagnostic
1145 register of the Cortex-A9 which disables the Store Buffer
1146 optimisation, preventing the defect from occurring. This has no
1147 visible impact on the overall performance or power consumption of the
1148 processor.
1149
Will Deacon9a27c272011-02-18 16:36:35 +01001150config ARM_ERRATA_751472
1151 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001152 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001153 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001154 help
1155 This option enables the workaround for the 751472 Cortex-A9 (prior
1156 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1157 completion of a following broadcasted operation if the second
1158 operation is received by a CPU before the ICIALLUIS has completed,
1159 potentially leading to corrupted entries in the cache or TLB.
1160
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001161config ARM_ERRATA_754322
1162 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1163 depends on CPU_V7
1164 help
1165 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1166 r3p*) erratum. A speculative memory access may cause a page table walk
1167 which starts prior to an ASID switch but completes afterwards. This
1168 can populate the micro-TLB with a stale entry which may be hit with
1169 the new ASID. This workaround places two dsb instructions in the mm
1170 switching code so that no page table walks can cross the ASID switch.
1171
Will Deacon5dab26a2011-03-04 12:38:54 +01001172config ARM_ERRATA_754327
1173 bool "ARM errata: no automatic Store Buffer drain"
1174 depends on CPU_V7 && SMP
1175 help
1176 This option enables the workaround for the 754327 Cortex-A9 (prior to
1177 r2p0) erratum. The Store Buffer does not have any automatic draining
1178 mechanism and therefore a livelock may occur if an external agent
1179 continuously polls a memory location waiting to observe an update.
1180 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1181 written polling loops from denying visibility of updates to memory.
1182
Catalin Marinas145e10e2011-08-15 11:04:41 +01001183config ARM_ERRATA_364296
1184 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001185 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001186 help
1187 This options enables the workaround for the 364296 ARM1136
1188 r0p2 erratum (possible cache data corruption with
1189 hit-under-miss enabled). It sets the undocumented bit 31 in
1190 the auxiliary control register and the FI bit in the control
1191 register, thus disabling hit-under-miss without putting the
1192 processor into full low interrupt latency mode. ARM11MPCore
1193 is not affected.
1194
Will Deaconf630c1b2011-09-15 11:45:15 +01001195config ARM_ERRATA_764369
1196 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1197 depends on CPU_V7 && SMP
1198 help
1199 This option enables the workaround for erratum 764369
1200 affecting Cortex-A9 MPCore with two or more processors (all
1201 current revisions). Under certain timing circumstances, a data
1202 cache line maintenance operation by MVA targeting an Inner
1203 Shareable memory region may fail to proceed up to either the
1204 Point of Coherency or to the Point of Unification of the
1205 system. This workaround adds a DSB instruction before the
1206 relevant cache maintenance functions and sets a specific bit
1207 in the diagnostic control register of the SCU.
1208
Simon Horman7253b852012-09-28 02:12:45 +01001209config ARM_ERRATA_775420
1210 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1211 depends on CPU_V7
1212 help
1213 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1214 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1215 operation aborts with MMU exception, it might cause the processor
1216 to deadlock. This workaround puts DSB before executing ISB if
1217 an abort may occur on cache maintenance.
1218
Catalin Marinas93dc6882013-03-26 23:35:04 +01001219config ARM_ERRATA_798181
1220 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1221 depends on CPU_V7 && SMP
1222 help
1223 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1224 adequately shooting down all use of the old entries. This
1225 option enables the Linux kernel workaround for this erratum
1226 which sends an IPI to the CPUs that are running the same ASID
1227 as the one being invalidated.
1228
Will Deacon84b65042013-08-20 17:29:55 +01001229config ARM_ERRATA_773022
1230 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1231 depends on CPU_V7
1232 help
1233 This option enables the workaround for the 773022 Cortex-A15
1234 (up to r0p4) erratum. In certain rare sequences of code, the
1235 loop buffer may deliver incorrect instructions. This
1236 workaround disables the loop buffer to avoid the erratum.
1237
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238endmenu
1239
1240source "arch/arm/common/Kconfig"
1241
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242menu "Bus support"
1243
1244config ARM_AMBA
1245 bool
1246
1247config ISA
1248 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249 help
1250 Find out whether you have ISA slots on your motherboard. ISA is the
1251 name of a bus system, i.e. the way the CPU talks to the other stuff
1252 inside your box. Other bus systems are PCI, EISA, MicroChannel
1253 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1254 newer boards don't support it. If you have ISA, say Y, otherwise N.
1255
Russell King065909b2006-01-04 15:44:16 +00001256# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257config ISA_DMA
1258 bool
Russell King065909b2006-01-04 15:44:16 +00001259 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001260
Russell King065909b2006-01-04 15:44:16 +00001261# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001262config ISA_DMA_API
1263 bool
Al Viro5cae8412005-05-04 05:39:22 +01001264
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001266 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 help
1268 Find out whether you have a PCI motherboard. PCI is the name of a
1269 bus system, i.e. the way the CPU talks to the other stuff inside
1270 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1271 VESA. If you have PCI, say Y, otherwise N.
1272
Anton Vorontsov52882172010-04-19 13:20:49 +01001273config PCI_DOMAINS
1274 bool
1275 depends on PCI
1276
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001277config PCI_NANOENGINE
1278 bool "BSE nanoEngine PCI support"
1279 depends on SA1100_NANOENGINE
1280 help
1281 Enable PCI on the BSE nanoEngine board.
1282
Matthew Wilcox36e23592007-07-10 10:54:40 -06001283config PCI_SYSCALL
1284 def_bool PCI
1285
Mike Rapoporta0113a92007-11-25 08:55:34 +01001286config PCI_HOST_ITE8152
1287 bool
1288 depends on PCI && MACH_ARMCORE
1289 default y
1290 select DMABOUNCE
1291
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001293source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294
1295source "drivers/pcmcia/Kconfig"
1296
1297endmenu
1298
1299menu "Kernel Features"
1300
Dave Martin3b556582011-12-07 15:38:04 +00001301config HAVE_SMP
1302 bool
1303 help
1304 This option should be selected by machines which have an SMP-
1305 capable CPU.
1306
1307 The only effect of this option is to make the SMP-related
1308 options available to the user for configuration.
1309
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001311 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001312 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001313 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001314 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001315 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316 help
1317 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001318 a system with only one CPU, say N. If you have a system with more
1319 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320
Robert Graffham4a474152014-01-23 15:55:29 -08001321 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001323 you say Y here, the kernel will run on many, but not all,
1324 uniprocessor machines. On a uniprocessor machine, the kernel
1325 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326
Paul Bolle395cf962011-08-15 02:02:26 +02001327 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001329 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330
1331 If you don't know what to do here, say N.
1332
Russell Kingf00ec482010-09-04 10:47:48 +01001333config SMP_ON_UP
1334 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001335 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001336 default y
1337 help
1338 SMP kernels contain instructions which fail on non-SMP processors.
1339 Enabling this option allows the kernel to modify itself to make
1340 these instructions safe. Disabling it allows about 1K of space
1341 savings.
1342
1343 If you don't know what to do here, say Y.
1344
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001345config ARM_CPU_TOPOLOGY
1346 bool "Support cpu topology definition"
1347 depends on SMP && CPU_V7
1348 default y
1349 help
1350 Support ARM cpu topology definition. The MPIDR register defines
1351 affinity between processors which is then used to describe the cpu
1352 topology of an ARM System.
1353
1354config SCHED_MC
1355 bool "Multi-core scheduler support"
1356 depends on ARM_CPU_TOPOLOGY
1357 help
1358 Multi-core scheduler support improves the CPU scheduler's decision
1359 making when dealing with multi-core CPU chips at a cost of slightly
1360 increased overhead in some places. If unsure say N here.
1361
1362config SCHED_SMT
1363 bool "SMT scheduler support"
1364 depends on ARM_CPU_TOPOLOGY
1365 help
1366 Improves the CPU scheduler's decision making when dealing with
1367 MultiThreading at a cost of slightly increased overhead in some
1368 places. If unsure say N here.
1369
Russell Kinga8cbcd92009-05-16 11:51:14 +01001370config HAVE_ARM_SCU
1371 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001372 help
1373 This option enables support for the ARM system coherency unit
1374
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001375config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001376 bool "Architected timer support"
1377 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001378 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001379 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001380 help
1381 This option enables support for the ARM architected timer
1382
Russell Kingf32f4ce2009-05-16 12:14:21 +01001383config HAVE_ARM_TWD
1384 bool
1385 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001386 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001387 help
1388 This options enables support for the ARM timer and watchdog unit
1389
Nicolas Pitree8db2882012-04-12 02:45:22 -04001390config MCPM
1391 bool "Multi-Cluster Power Management"
1392 depends on CPU_V7 && SMP
1393 help
1394 This option provides the common power management infrastructure
1395 for (multi-)cluster based systems, such as big.LITTLE based
1396 systems.
1397
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001398config MCPM_QUAD_CLUSTER
1399 bool
1400 depends on MCPM
1401 help
1402 To avoid wasting resources unnecessarily, MCPM only supports up
1403 to 2 clusters by default.
1404 Platforms with 3 or 4 clusters that use MCPM must select this
1405 option to allow the additional clusters to be managed.
1406
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001407config BIG_LITTLE
1408 bool "big.LITTLE support (Experimental)"
1409 depends on CPU_V7 && SMP
1410 select MCPM
1411 help
1412 This option enables support selections for the big.LITTLE
1413 system architecture.
1414
1415config BL_SWITCHER
1416 bool "big.LITTLE switcher support"
1417 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001418 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001419 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001420 help
1421 The big.LITTLE "switcher" provides the core functionality to
1422 transparently handle transition between a cluster of A15's
1423 and a cluster of A7's in a big.LITTLE system.
1424
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001425config BL_SWITCHER_DUMMY_IF
1426 tristate "Simple big.LITTLE switcher user interface"
1427 depends on BL_SWITCHER && DEBUG_KERNEL
1428 help
1429 This is a simple and dummy char dev interface to control
1430 the big.LITTLE switcher core code. It is meant for
1431 debugging purposes only.
1432
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001433choice
1434 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001435 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001436 default VMSPLIT_3G
1437 help
1438 Select the desired split between kernel and user memory.
1439
1440 If you are not absolutely sure what you are doing, leave this
1441 option alone!
1442
1443 config VMSPLIT_3G
1444 bool "3G/1G user/kernel split"
1445 config VMSPLIT_2G
1446 bool "2G/2G user/kernel split"
1447 config VMSPLIT_1G
1448 bool "1G/3G user/kernel split"
1449endchoice
1450
1451config PAGE_OFFSET
1452 hex
Russell King006fa252014-02-26 19:40:46 +00001453 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001454 default 0x40000000 if VMSPLIT_1G
1455 default 0x80000000 if VMSPLIT_2G
1456 default 0xC0000000
1457
Linus Torvalds1da177e2005-04-16 15:20:36 -07001458config NR_CPUS
1459 int "Maximum number of CPUs (2-32)"
1460 range 2 32
1461 depends on SMP
1462 default "4"
1463
Russell Kinga054a812005-11-02 22:24:33 +00001464config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001465 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001466 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001467 help
1468 Say Y here to experiment with turning CPUs off and on. CPUs
1469 can be controlled through /sys/devices/system/cpu.
1470
Will Deacon2bdd4242012-12-12 19:20:52 +00001471config ARM_PSCI
1472 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1473 depends on CPU_V7
1474 help
1475 Say Y here if you want Linux to communicate with system firmware
1476 implementing the PSCI specification for CPU-centric power
1477 management operations described in ARM document number ARM DEN
1478 0022A ("Power State Coordination Interface System Software on
1479 ARM processors").
1480
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001481# The GPIO number here must be sorted by descending number. In case of
1482# a multiplatform kernel, we just want the highest value required by the
1483# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001484config ARCH_NR_GPIO
1485 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001486 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001487 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1488 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001489 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001490 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001491 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001492 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001493 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001494 default 0
1495 help
1496 Maximum number of GPIOs in the system.
1497
1498 If unsure, leave the default value.
1499
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001500source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501
Russell Kingc9218b12013-04-27 23:31:10 +01001502config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001503 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001504 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001505 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001506 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001507 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001508 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001509
1510choice
Russell King47d84682013-09-10 23:47:55 +01001511 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001512 prompt "Timer frequency"
1513
1514config HZ_100
1515 bool "100 Hz"
1516
1517config HZ_200
1518 bool "200 Hz"
1519
1520config HZ_250
1521 bool "250 Hz"
1522
1523config HZ_300
1524 bool "300 Hz"
1525
1526config HZ_500
1527 bool "500 Hz"
1528
1529config HZ_1000
1530 bool "1000 Hz"
1531
1532endchoice
1533
1534config HZ
1535 int
Russell King47d84682013-09-10 23:47:55 +01001536 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001537 default 100 if HZ_100
1538 default 200 if HZ_200
1539 default 250 if HZ_250
1540 default 300 if HZ_300
1541 default 500 if HZ_500
1542 default 1000
1543
1544config SCHED_HRTICK
1545 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001546
Catalin Marinas16c79652009-07-24 12:33:02 +01001547config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001548 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001549 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001550 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001551 select AEABI
1552 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001553 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001554 help
1555 By enabling this option, the kernel will be compiled in
1556 Thumb-2 mode. A compiler/assembler that understand the unified
1557 ARM-Thumb syntax is needed.
1558
1559 If unsure, say N.
1560
Dave Martin6f685c52011-03-03 11:41:12 +01001561config THUMB2_AVOID_R_ARM_THM_JUMP11
1562 bool "Work around buggy Thumb-2 short branch relocations in gas"
1563 depends on THUMB2_KERNEL && MODULES
1564 default y
1565 help
1566 Various binutils versions can resolve Thumb-2 branches to
1567 locally-defined, preemptible global symbols as short-range "b.n"
1568 branch instructions.
1569
1570 This is a problem, because there's no guarantee the final
1571 destination of the symbol, or any candidate locations for a
1572 trampoline, are within range of the branch. For this reason, the
1573 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1574 relocation in modules at all, and it makes little sense to add
1575 support.
1576
1577 The symptom is that the kernel fails with an "unsupported
1578 relocation" error when loading some modules.
1579
1580 Until fixed tools are available, passing
1581 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1582 code which hits this problem, at the cost of a bit of extra runtime
1583 stack usage in some cases.
1584
1585 The problem is described in more detail at:
1586 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1587
1588 Only Thumb-2 kernels are affected.
1589
1590 Unless you are sure your tools don't have this problem, say Y.
1591
Catalin Marinas0becb082009-07-24 12:32:53 +01001592config ARM_ASM_UNIFIED
1593 bool
1594
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001595config AEABI
1596 bool "Use the ARM EABI to compile the kernel"
1597 help
1598 This option allows for the kernel to be compiled using the latest
1599 ARM ABI (aka EABI). This is only useful if you are using a user
1600 space environment that is also compiled with EABI.
1601
1602 Since there are major incompatibilities between the legacy ABI and
1603 EABI, especially with regard to structure member alignment, this
1604 option also changes the kernel syscall calling convention to
1605 disambiguate both ABIs and allow for backward compatibility support
1606 (selected with CONFIG_OABI_COMPAT).
1607
1608 To use this you need GCC version 4.0.0 or later.
1609
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001610config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001611 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001612 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001613 help
1614 This option preserves the old syscall interface along with the
1615 new (ARM EABI) one. It also provides a compatibility layer to
1616 intercept syscalls that have structure arguments which layout
1617 in memory differs between the legacy ABI and the new ARM EABI
1618 (only for non "thumb" binaries). This option adds a tiny
1619 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001620
1621 The seccomp filter system will not be available when this is
1622 selected, since there is no way yet to sensibly distinguish
1623 between calling conventions during filtering.
1624
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001625 If you know you'll be using only pure EABI user space then you
1626 can say N here. If this option is not selected and you attempt
1627 to execute a legacy ABI binary then the result will be
1628 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001629 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001630
Mel Gormaneb335752009-05-13 17:34:48 +01001631config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001632 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001633
Russell King05944d72006-11-30 20:43:51 +00001634config ARCH_SPARSEMEM_ENABLE
1635 bool
1636
Russell King07a2f732008-10-01 21:39:58 +01001637config ARCH_SPARSEMEM_DEFAULT
1638 def_bool ARCH_SPARSEMEM_ENABLE
1639
Russell King05944d72006-11-30 20:43:51 +00001640config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001641 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001642
Will Deacon7b7bf492011-05-19 13:21:14 +01001643config HAVE_ARCH_PFN_VALID
1644 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1645
Steve Capperb8cd51a2014-10-09 15:29:20 -07001646config HAVE_GENERIC_RCU_GUP
1647 def_bool y
1648 depends on ARM_LPAE
1649
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001650config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001651 bool "High Memory Support"
1652 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001653 help
1654 The address space of ARM processors is only 4 Gigabytes large
1655 and it has to accommodate user address space, kernel address
1656 space as well as some memory mapped IO. That means that, if you
1657 have a large amount of physical memory and/or IO, not all of the
1658 memory can be "permanently mapped" by the kernel. The physical
1659 memory that is not permanently mapped is called "high memory".
1660
1661 Depending on the selected kernel/user memory split, minimum
1662 vmalloc space and actual amount of RAM, you may not need this
1663 option which should result in a slightly faster kernel.
1664
1665 If unsure, say n.
1666
Russell King65cec8e2009-08-17 20:02:06 +01001667config HIGHPTE
1668 bool "Allocate 2nd-level pagetables from highmem"
1669 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001670
Jamie Iles1b8873a2010-02-02 20:25:44 +01001671config HW_PERF_EVENTS
1672 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001673 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001674 default y
1675 help
1676 Enable hardware performance counter support for perf events. If
1677 disabled, perf events will use software events only.
1678
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001679config SYS_SUPPORTS_HUGETLBFS
1680 def_bool y
1681 depends on ARM_LPAE
1682
Catalin Marinas8d962502012-07-25 14:39:26 +01001683config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1684 def_bool y
1685 depends on ARM_LPAE
1686
Steven Capper4bfab202013-07-26 14:58:22 +01001687config ARCH_WANT_GENERAL_HUGETLB
1688 def_bool y
1689
Dave Hansen3f22ab22005-06-23 00:07:43 -07001690source "mm/Kconfig"
1691
Magnus Dammc1b2d972010-07-05 10:00:11 +01001692config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001693 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1694 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001695 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001696 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001697 default "11"
1698 help
1699 The kernel memory allocator divides physically contiguous memory
1700 blocks into "zones", where each zone is a power of two number of
1701 pages. This option selects the largest power of two that the kernel
1702 keeps in the memory allocator. If you need to allocate very large
1703 blocks of physically contiguous memory, then you may need to
1704 increase this value.
1705
1706 This config option is actually maximum order plus one. For example,
1707 a value of 11 means that the largest free memory block is 2^10 pages.
1708
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709config ALIGNMENT_TRAP
1710 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001711 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001712 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001713 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001714 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001715 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1717 address divisible by 4. On 32-bit ARM processors, these non-aligned
1718 fetch/store instructions will be emulated in software if you say
1719 here, which has a severe performance impact. This is necessary for
1720 correct operation of some network protocols. With an IP-only
1721 configuration it is safe to say N, otherwise say Y.
1722
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001723config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001724 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1725 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001726 default y if CPU_FEROCEON
1727 help
1728 Implement faster copy_to_user and clear_user methods for CPU
1729 cores where a 8-word STM instruction give significantly higher
1730 memory write throughput than a sequence of individual 32bit stores.
1731
1732 A possible side effect is a slight increase in scheduling latency
1733 between threads sharing the same address space if they invoke
1734 such copy operations with large buffers.
1735
1736 However, if the CPU data cache is using a write-allocate mode,
1737 this option is unlikely to provide any performance gain.
1738
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001739config SECCOMP
1740 bool
1741 prompt "Enable seccomp to safely compute untrusted bytecode"
1742 ---help---
1743 This kernel feature is useful for number crunching applications
1744 that may need to compute untrusted bytecode during their
1745 execution. By using pipes or other transports made available to
1746 the process as file descriptors supporting the read/write
1747 syscalls, it's possible to isolate those applications in
1748 their own address space using seccomp. Once seccomp is
1749 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1750 and the task is only allowed to execute a few safe syscalls
1751 defined by each seccomp mode.
1752
Stefano Stabellini06e62952013-10-15 15:47:14 +00001753config SWIOTLB
1754 def_bool y
1755
1756config IOMMU_HELPER
1757 def_bool SWIOTLB
1758
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001759config XEN_DOM0
1760 def_bool y
1761 depends on XEN
1762
1763config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001764 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001765 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001766 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001767 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001768 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001769 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001770 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001771 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001772 help
1773 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1774
Linus Torvalds1da177e2005-04-16 15:20:36 -07001775endmenu
1776
1777menu "Boot options"
1778
Grant Likely9eb8f672011-04-28 14:27:20 -06001779config USE_OF
1780 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001781 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001782 select OF
1783 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001784 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001785 help
1786 Include support for flattened device tree machine descriptions.
1787
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001788config ATAGS
1789 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1790 default y
1791 help
1792 This is the traditional way of passing data to the kernel at boot
1793 time. If you are solely relying on the flattened device tree (or
1794 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1795 to remove ATAGS support from your kernel binary. If unsure,
1796 leave this to y.
1797
1798config DEPRECATED_PARAM_STRUCT
1799 bool "Provide old way to pass kernel parameters"
1800 depends on ATAGS
1801 help
1802 This was deprecated in 2001 and announced to live on for 5 years.
1803 Some old boot loaders still use this way.
1804
Linus Torvalds1da177e2005-04-16 15:20:36 -07001805# Compressed boot loader in ROM. Yes, we really want to ask about
1806# TEXT and BSS so we preserve their values in the config files.
1807config ZBOOT_ROM_TEXT
1808 hex "Compressed ROM boot loader base address"
1809 default "0"
1810 help
1811 The physical address at which the ROM-able zImage is to be
1812 placed in the target. Platforms which normally make use of
1813 ROM-able zImage formats normally set this to a suitable
1814 value in their defconfig file.
1815
1816 If ZBOOT_ROM is not enabled, this has no effect.
1817
1818config ZBOOT_ROM_BSS
1819 hex "Compressed ROM boot loader BSS address"
1820 default "0"
1821 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001822 The base address of an area of read/write memory in the target
1823 for the ROM-able zImage which must be available while the
1824 decompressor is running. It must be large enough to hold the
1825 entire decompressed kernel plus an additional 128 KiB.
1826 Platforms which normally make use of ROM-able zImage formats
1827 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001828
1829 If ZBOOT_ROM is not enabled, this has no effect.
1830
1831config ZBOOT_ROM
1832 bool "Compressed boot loader in ROM/flash"
1833 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001834 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001835 help
1836 Say Y here if you intend to execute your compressed kernel image
1837 (zImage) directly from ROM or flash. If unsure, say N.
1838
Simon Horman090ab3f2011-04-26 06:29:53 +01001839choice
1840 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001841 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001842 default ZBOOT_ROM_NONE
1843 help
1844 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001845 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001846 kernel image to an MMC or SD card and boot the kernel straight
1847 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001848 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001849 rest the kernel image to RAM.
1850
1851config ZBOOT_ROM_NONE
1852 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1853 help
1854 Do not load image from SD or MMC
1855
Simon Hormanf45b1142011-01-11 04:01:08 +01001856config ZBOOT_ROM_MMCIF
1857 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001858 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001859 Load image from MMCIF hardware block.
1860
1861config ZBOOT_ROM_SH_MOBILE_SDHI
1862 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1863 help
1864 Load image from SDHI hardware block
1865
1866endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001867
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001868config ARM_APPENDED_DTB
1869 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001870 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001871 help
1872 With this option, the boot code will look for a device tree binary
1873 (DTB) appended to zImage
1874 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1875
1876 This is meant as a backward compatibility convenience for those
1877 systems with a bootloader that can't be upgraded to accommodate
1878 the documented boot protocol using a device tree.
1879
1880 Beware that there is very little in terms of protection against
1881 this option being confused by leftover garbage in memory that might
1882 look like a DTB header after a reboot if no actual DTB is appended
1883 to zImage. Do not leave this option active in a production kernel
1884 if you don't intend to always append a DTB. Proper passing of the
1885 location into r2 of a bootloader provided DTB is always preferable
1886 to this option.
1887
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001888config ARM_ATAG_DTB_COMPAT
1889 bool "Supplement the appended DTB with traditional ATAG information"
1890 depends on ARM_APPENDED_DTB
1891 help
1892 Some old bootloaders can't be updated to a DTB capable one, yet
1893 they provide ATAGs with memory configuration, the ramdisk address,
1894 the kernel cmdline string, etc. Such information is dynamically
1895 provided by the bootloader and can't always be stored in a static
1896 DTB. To allow a device tree enabled kernel to be used with such
1897 bootloaders, this option allows zImage to extract the information
1898 from the ATAG list and store it at run time into the appended DTB.
1899
Genoud Richardd0f34a12012-06-26 16:37:59 +01001900choice
1901 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1902 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1903
1904config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1905 bool "Use bootloader kernel arguments if available"
1906 help
1907 Uses the command-line options passed by the boot loader instead of
1908 the device tree bootargs property. If the boot loader doesn't provide
1909 any, the device tree bootargs property will be used.
1910
1911config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1912 bool "Extend with bootloader kernel arguments"
1913 help
1914 The command-line arguments provided by the boot loader will be
1915 appended to the the device tree bootargs property.
1916
1917endchoice
1918
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919config CMDLINE
1920 string "Default kernel command string"
1921 default ""
1922 help
1923 On some architectures (EBSA110 and CATS), there is currently no way
1924 for the boot loader to pass arguments to the kernel. For these
1925 architectures, you should supply some command-line options at build
1926 time by entering them here. As a minimum, you should specify the
1927 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1928
Victor Boivie4394c122011-05-04 17:07:55 +01001929choice
1930 prompt "Kernel command line type" if CMDLINE != ""
1931 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001932 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001933
1934config CMDLINE_FROM_BOOTLOADER
1935 bool "Use bootloader kernel arguments if available"
1936 help
1937 Uses the command-line options passed by the boot loader. If
1938 the boot loader doesn't provide any, the default kernel command
1939 string provided in CMDLINE will be used.
1940
1941config CMDLINE_EXTEND
1942 bool "Extend bootloader kernel arguments"
1943 help
1944 The command-line arguments provided by the boot loader will be
1945 appended to the default kernel command string.
1946
Alexander Holler92d20402010-02-16 19:04:53 +01001947config CMDLINE_FORCE
1948 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001949 help
1950 Always use the default kernel command string, even if the boot
1951 loader passes other arguments to the kernel.
1952 This is useful if you cannot or don't want to change the
1953 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001954endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001955
Linus Torvalds1da177e2005-04-16 15:20:36 -07001956config XIP_KERNEL
1957 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001958 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001959 help
1960 Execute-In-Place allows the kernel to run from non-volatile storage
1961 directly addressable by the CPU, such as NOR flash. This saves RAM
1962 space since the text section of the kernel is not loaded from flash
1963 to RAM. Read-write sections, such as the data section and stack,
1964 are still copied to RAM. The XIP kernel is not compressed since
1965 it has to run directly from flash, so it will take more space to
1966 store it. The flash address used to link the kernel object files,
1967 and for storing it, is configuration dependent. Therefore, if you
1968 say Y here, you must know the proper physical address where to
1969 store the kernel image depending on your own flash memory usage.
1970
1971 Also note that the make target becomes "make xipImage" rather than
1972 "make zImage" or "make Image". The final kernel binary to put in
1973 ROM memory will be arch/arm/boot/xipImage.
1974
1975 If unsure, say N.
1976
1977config XIP_PHYS_ADDR
1978 hex "XIP Kernel Physical Location"
1979 depends on XIP_KERNEL
1980 default "0x00080000"
1981 help
1982 This is the physical address in your flash memory the kernel will
1983 be linked for and stored to. This address is dependent on your
1984 own flash usage.
1985
Richard Purdiec587e4a2007-02-06 21:29:00 +01001986config KEXEC
1987 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001988 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001989 help
1990 kexec is a system call that implements the ability to shutdown your
1991 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001992 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001993 you can start any kernel with it, not just Linux.
1994
1995 It is an ongoing process to be certain the hardware in a machine
1996 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02001997 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01001998
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001999config ATAGS_PROC
2000 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002001 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002002 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002003 help
2004 Should the atags used to boot the kernel be exported in an "atags"
2005 file in procfs. Useful with kexec.
2006
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002007config CRASH_DUMP
2008 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002009 help
2010 Generate crash dump after being started by kexec. This should
2011 be normally only set in special crash dump kernels which are
2012 loaded in the main kernel with kexec-tools into a specially
2013 reserved region and then later executed after a crash by
2014 kdump/kexec. The crash dump kernel must be compiled to a
2015 memory address not used by the main kernel
2016
2017 For more details see Documentation/kdump/kdump.txt
2018
Eric Miaoe69edc792010-07-05 15:56:50 +02002019config AUTO_ZRELADDR
2020 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002021 help
2022 ZRELADDR is the physical address where the decompressed kernel
2023 image will be placed. If AUTO_ZRELADDR is selected, the address
2024 will be determined at run-time by masking the current IP with
2025 0xf8000000. This assumes the zImage being placed in the first 128MB
2026 from start of memory.
2027
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028endmenu
2029
Russell Kingac9d7ef2008-08-18 17:26:00 +01002030menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002031
Linus Torvalds1da177e2005-04-16 15:20:36 -07002032source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033
Russell Kingac9d7ef2008-08-18 17:26:00 +01002034source "drivers/cpuidle/Kconfig"
2035
2036endmenu
2037
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038menu "Floating point emulation"
2039
2040comment "At least one emulation must be selected"
2041
2042config FPE_NWFPE
2043 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002044 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002045 ---help---
2046 Say Y to include the NWFPE floating point emulator in the kernel.
2047 This is necessary to run most binaries. Linux does not currently
2048 support floating point hardware so you need to say Y here even if
2049 your machine has an FPA or floating point co-processor podule.
2050
2051 You may say N here if you are going to load the Acorn FPEmulator
2052 early in the bootup.
2053
2054config FPE_NWFPE_XP
2055 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002056 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002057 help
2058 Say Y to include 80-bit support in the kernel floating-point
2059 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2060 Note that gcc does not generate 80-bit operations by default,
2061 so in most cases this option only enlarges the size of the
2062 floating point emulator without any good reason.
2063
2064 You almost surely want to say N here.
2065
2066config FPE_FASTFPE
2067 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002068 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002069 ---help---
2070 Say Y here to include the FAST floating point emulator in the kernel.
2071 This is an experimental much faster emulator which now also has full
2072 precision for the mantissa. It does not support any exceptions.
2073 It is very simple, and approximately 3-6 times faster than NWFPE.
2074
2075 It should be sufficient for most programs. It may be not suitable
2076 for scientific calculations, but you have to check this for yourself.
2077 If you do not feel you need a faster FP emulation you should better
2078 choose NWFPE.
2079
2080config VFP
2081 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002082 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083 help
2084 Say Y to include VFP support code in the kernel. This is needed
2085 if your hardware includes a VFP unit.
2086
2087 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2088 release notes and additional status information.
2089
2090 Say N if your target does not have VFP hardware.
2091
Catalin Marinas25ebee02007-09-25 15:22:24 +01002092config VFPv3
2093 bool
2094 depends on VFP
2095 default y if CPU_V7
2096
Catalin Marinasb5872db2008-01-10 19:16:17 +01002097config NEON
2098 bool "Advanced SIMD (NEON) Extension support"
2099 depends on VFPv3 && CPU_V7
2100 help
2101 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2102 Extension.
2103
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002104config KERNEL_MODE_NEON
2105 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002106 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002107 help
2108 Say Y to include support for NEON in kernel mode.
2109
Linus Torvalds1da177e2005-04-16 15:20:36 -07002110endmenu
2111
2112menu "Userspace binary formats"
2113
2114source "fs/Kconfig.binfmt"
2115
2116config ARTHUR
2117 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00002118 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119 help
2120 Say Y here to include the kernel code necessary if you want to run
2121 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2122 experimental; if this sounds frightening, say N and sleep in peace.
2123 You can also say M here to compile this support as a module (which
2124 will be called arthur).
2125
2126endmenu
2127
2128menu "Power management options"
2129
Russell Kingeceab4a2005-11-15 11:31:41 +00002130source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131
Johannes Bergf4cb5702007-12-08 02:14:00 +01002132config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002133 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002134 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002135 def_bool y
2136
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002137config ARM_CPU_SUSPEND
2138 def_bool PM_SLEEP
2139
Sebastian Capella603fb422014-03-25 01:20:29 +01002140config ARCH_HIBERNATION_POSSIBLE
2141 bool
2142 depends on MMU
2143 default y if ARCH_SUSPEND_POSSIBLE
2144
Linus Torvalds1da177e2005-04-16 15:20:36 -07002145endmenu
2146
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002147source "net/Kconfig"
2148
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002149source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150
2151source "fs/Kconfig"
2152
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153source "arch/arm/Kconfig.debug"
2154
2155source "security/Kconfig"
2156
2157source "crypto/Kconfig"
2158
2159source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002160
2161source "arch/arm/kvm/Kconfig"