blob: 756711f3095c4a781705996c086fbb4af80e820e [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
Kim Phillips017f1612013-11-06 05:15:24 +01009 select ARCH_USE_BUILTIN_BSWAP
Will Deacon0cbad9c2013-10-09 17:19:22 +010010 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010011 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010012 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010013 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010014 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacondce5c9e2013-12-17 19:50:16 +010015 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010016 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010017 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010018 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010019 select GENERIC_IRQ_PROBE
20 select GENERIC_IRQ_SHOW
Russell Kingb1b3f492012-10-06 17:12:25 +010021 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070022 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010023 select GENERIC_SMP_IDLE_THREAD
24 select GENERIC_STRNCPY_FROM_USER
25 select GENERIC_STRNLEN_USER
26 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090027 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Rabin Vincent09f05d82012-02-18 17:52:41 +010028 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060029 select HAVE_ARCH_KGDB
Kees Cook91702172013-11-09 00:51:56 +010030 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010031 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010032 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010033 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010034 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010035 select HAVE_C_RECORDMCOUNT
36 select HAVE_DEBUG_KMEMLEAK
37 select HAVE_DMA_API_DEBUG
38 select HAVE_DMA_ATTRS
39 select HAVE_DMA_CONTIGUOUS if MMU
40 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Will Deacondce5c9e2013-12-17 19:50:16 +010041 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010042 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
43 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
44 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
45 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010046 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
47 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010048 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010049 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070050 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010051 select HAVE_KERNEL_LZMA
52 select HAVE_KERNEL_LZO
53 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010054 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080055 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010056 select HAVE_MEMBLOCK
Russell King171b3f02013-09-12 21:24:42 +010057 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
Russell Kingb1b3f492012-10-06 17:12:25 +010058 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jamie Iles7ada1892010-02-02 20:24:58 +010059 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010060 select HAVE_PERF_REGS
61 select HAVE_PERF_USER_STACK_DUMP
Will Deacone513f8b2010-06-25 12:24:53 +010062 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010063 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070064 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070065 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010066 select IRQ_FORCED_THREADING
Anna-Maria Gleixner3d92a712012-05-18 16:45:44 +000067 select KTIME_SCALAR
Russell King171b3f02013-09-12 21:24:42 +010068 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040069 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010070 select OLD_SIGACTION
71 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010072 select PERF_USE_VMALLOC
73 select RTC_LIB
74 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010075 # Above selects are sorted alphabetically; please add new ones
76 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 help
78 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000079 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000081 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 Europe. There is an ARM Linux project with a web page at
83 <http://www.arm.linux.org.uk/>.
84
Russell King74facff2011-06-02 11:16:22 +010085config ARM_HAS_SG_CHAIN
86 bool
87
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020088config NEED_SG_DMA_LENGTH
89 bool
90
91config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020092 bool
Russell Kingb1b3f492012-10-06 17:12:25 +010093 select ARM_HAS_SG_CHAIN
94 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020095
Seung-Woo Kim60460ab2013-02-06 13:21:14 +090096if ARM_DMA_USE_IOMMU
97
98config ARM_DMA_IOMMU_ALIGNMENT
99 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
100 range 4 9
101 default 8
102 help
103 DMA mapping framework by default aligns all buffers to the smallest
104 PAGE_SIZE order which is greater than or equal to the requested buffer
105 size. This works well for buffers up to a few hundreds kilobytes, but
106 for larger buffers it just a waste of address space. Drivers which has
107 relatively small addressing window (like 64Mib) might run out of
108 virtual space with just a few allocations.
109
110 With this parameter you can specify the maximum PAGE_SIZE order for
111 DMA IOMMU buffers. Larger buffers will be aligned only to this
112 specified order. The order is expressed as a power of two multiplied
113 by the PAGE_SIZE.
114
115endif
116
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100117config MIGHT_HAVE_PCI
118 bool
119
Ralf Baechle75e71532007-02-09 17:08:58 +0000120config SYS_SUPPORTS_APM_EMULATION
121 bool
122
Linus Walleijbc581772009-09-15 17:30:37 +0100123config HAVE_TCM
124 bool
125 select GENERIC_ALLOCATOR
126
Russell Kinge119bff2010-01-10 17:23:29 +0000127config HAVE_PROC_CPU
128 bool
129
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700130config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000131 bool
Al Viro5ea81762007-02-11 15:41:31 +0000132
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133config EISA
134 bool
135 ---help---
136 The Extended Industry Standard Architecture (EISA) bus was
137 developed as an open alternative to the IBM MicroChannel bus.
138
139 The EISA bus provided some of the features of the IBM MicroChannel
140 bus while maintaining backward compatibility with cards made for
141 the older ISA bus. The EISA bus saw limited use between 1988 and
142 1995 when it was made obsolete by the PCI bus.
143
144 Say Y here if you are building a kernel for an EISA-based machine.
145
146 Otherwise, say N.
147
148config SBUS
149 bool
150
Russell Kingf16fb1e2007-04-28 09:59:37 +0100151config STACKTRACE_SUPPORT
152 bool
153 default y
154
Nicolas Pitref76e9152008-04-24 01:31:46 -0400155config HAVE_LATENCYTOP_SUPPORT
156 bool
157 depends on !SMP
158 default y
159
Russell Kingf16fb1e2007-04-28 09:59:37 +0100160config LOCKDEP_SUPPORT
161 bool
162 default y
163
Russell King7ad1bcb2006-08-27 12:07:02 +0100164config TRACE_IRQFLAGS_SUPPORT
165 bool
166 default y
167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168config RWSEM_XCHGADD_ALGORITHM
169 bool
Will Deacon8a874112014-05-02 17:06:19 +0100170 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
David Howellsf0d1b0b2006-12-08 02:37:49 -0800172config ARCH_HAS_ILOG2_U32
173 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800174
175config ARCH_HAS_ILOG2_U64
176 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800177
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100178config ARCH_HAS_BANDGAP
179 bool
180
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800181config GENERIC_HWEIGHT
182 bool
183 default y
184
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185config GENERIC_CALIBRATE_DELAY
186 bool
187 default y
188
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100189config ARCH_MAY_HAVE_PC_FDC
190 bool
191
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800192config ZONE_DMA
193 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800194
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800195config NEED_DMA_MAP_STATE
196 def_bool y
197
David A. Longc7edc9e2014-03-07 11:23:04 -0500198config ARCH_SUPPORTS_UPROBES
199 def_bool y
200
Rob Herring58af4a22012-03-20 14:33:01 -0500201config ARCH_HAS_DMA_SET_COHERENT_MASK
202 bool
203
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204config GENERIC_ISA_DMA
205 bool
206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207config FIQ
208 bool
209
Rob Herring13a50452012-02-07 09:28:22 -0600210config NEED_RET_TO_USER
211 bool
212
Al Viro034d2f52005-12-19 16:27:59 -0500213config ARCH_MTD_XIP
214 bool
215
Hyok S. Choic760fc12006-03-27 15:18:50 +0100216config VECTORS_BASE
217 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900218 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100219 default DRAM_BASE if REMAP_VECTORS_TO_RAM
220 default 0x00000000
221 help
Russell King19accfd2013-07-04 11:40:32 +0100222 The base address of exception vectors. This must be two pages
223 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100224
Russell Kingdc21af92011-01-04 19:09:43 +0000225config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100226 bool "Patch physical to virtual translations at runtime" if EMBEDDED
227 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100228 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000229 depends on !ARCH_REALVIEW || !SPARSEMEM
230 help
Russell King111e9a52011-05-12 10:02:42 +0100231 Patch phys-to-virt and virt-to-phys translation functions at
232 boot and module load time according to the position of the
233 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000234
Russell King111e9a52011-05-12 10:02:42 +0100235 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100236 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000237
Russell Kingc1beced2011-08-10 10:23:45 +0100238 Only disable this option if you know that you do not require
239 this feature (eg, building a kernel for a single machine) and
240 you need to shrink the kernel to the minimal size.
241
Rob Herring01464222012-08-28 13:06:41 -0500242config NEED_MACH_GPIO_H
243 bool
244 help
245 Select this when mach/gpio.h is required to provide special
246 definitions for this platform. The need for mach/gpio.h should
247 be avoided when possible.
248
Rob Herringc334bc12012-03-04 22:03:33 -0600249config NEED_MACH_IO_H
250 bool
251 help
252 Select this when mach/io.h is required to provide special
253 definitions for this platform. The need for mach/io.h should
254 be avoided when possible.
255
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400256config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400257 bool
Russell King111e9a52011-05-12 10:02:42 +0100258 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400259 Select this when mach/memory.h is required to provide special
260 definitions for this platform. The need for mach/memory.h should
261 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400262
263config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100264 hex "Physical address of main memory" if MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400265 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
Nicolas Pitre974c0722011-12-02 23:09:42 +0100266 default DRAM_BASE if !MMU
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400267 help
268 Please provide the physical address corresponding to the
269 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000270
Simon Glass87e040b2011-08-16 23:44:26 +0100271config GENERIC_BUG
272 def_bool y
273 depends on BUG
274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275source "init/Kconfig"
276
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700277source "kernel/Kconfig.freezer"
278
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279menu "System Type"
280
Hyok S. Choi3c427972009-07-24 12:35:00 +0100281config MMU
282 bool "MMU-based Paged Memory Management Support"
283 default y
284 help
285 Select if you want MMU-based virtualised addressing space
286 support by paged memory management. If unsure, say 'Y'.
287
Russell Kingccf50e22010-03-15 19:03:06 +0000288#
289# The "ARM system type" choice list is ordered alphabetically by option
290# text. Please add new entries in the option alphabetic order.
291#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292choice
293 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100294 default ARCH_VERSATILE if !MMU
295 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Rob Herring387798b2012-09-06 13:41:12 -0500297config ARCH_MULTIPLATFORM
298 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100299 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600300 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700301 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500302 select ARM_PATCH_PHYS_VIRT
303 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500304 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600305 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600306 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100307 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500308 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600309 select SPARSE_IRQ
310 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600311
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100312config ARCH_INTEGRATOR
313 bool "ARM Ltd. Integrator family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100314 select ARM_AMBA
panchaxarife989142013-12-02 16:58:51 +0530315 select ARM_PATCH_PHYS_VIRT
316 select AUTO_ZRELADDR
Linus Walleija6131632012-06-11 17:33:12 +0200317 select COMMON_CLK
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200318 select COMMON_CLK_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100319 select GENERIC_CLOCKEVENTS
Linus Walleij9904f792011-12-09 10:29:23 +0100320 select HAVE_TCM
Russell Kingc5a0adb2010-01-16 20:16:10 +0000321 select ICST
Russell Kingb1b3f492012-10-06 17:12:25 +0100322 select MULTI_IRQ_HANDLER
323 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000324 select PLAT_VERSATILE
Linus Walleij695436e2012-02-26 10:46:48 +0100325 select SPARSE_IRQ
Linus Walleijd7057e12013-06-15 22:01:13 +0200326 select USE_OF
Linus Walleij2389d502012-10-31 22:04:31 +0100327 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100328 help
329 Support for ARM's Integrator platform.
330
331config ARCH_REALVIEW
332 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100333 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100334 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100335 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200336 select COMMON_CLK
337 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100338 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100339 select GPIO_PL061 if GPIOLIB
340 select ICST
341 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000342 select PLAT_VERSATILE
Russell King3cb5ee42011-01-18 20:13:20 +0000343 select PLAT_VERSATILE_CLCD
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100344 help
345 This enables support for ARM Ltd RealView boards.
346
347config ARCH_VERSATILE
348 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100349 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100350 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100351 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100352 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100353 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100354 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900355 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000356 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000357 select PLAT_VERSATILE
Russell King3414ba82011-01-18 20:12:10 +0000358 select PLAT_VERSATILE_CLCD
Russell Kingb1b3f492012-10-06 17:12:25 +0100359 select PLAT_VERSATILE_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100360 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100361 help
362 This enables support for ARM Ltd Versatile board.
363
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100364config ARCH_AT91
365 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100366 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100367 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100368 select IRQ_DOMAIN
Rob Herring1ac02d72012-04-04 17:48:04 -0500369 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800370 select PINCTRL
371 select PINCTRL_AT91 if USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100372 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100373 This enables support for systems based on Atmel
374 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100375
Russell King93e22562012-10-12 14:20:52 +0100376config ARCH_CLPS711X
377 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400378 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400379 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400380 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100381 select COMMON_CLK
382 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400383 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400384 select MFD_SYSCON
Russell King93e22562012-10-12 14:20:52 +0100385 help
386 Support for Cirrus Logic 711x/721x/731x based boards.
387
Russell King788c9702009-04-26 14:21:59 +0100388config ARCH_GEMINI
389 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100390 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200391 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100392 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200393 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100394 help
395 Support for the Cortina Systems Gemini family SoCs
396
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397config ARCH_EBSA110
398 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100399 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000400 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100401 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600402 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400403 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700404 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 help
406 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000407 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 Ethernet interface, two PCMCIA sockets, two serial ports and a
409 parallel port.
410
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100411config ARCH_EFM32
412 bool "Energy Micro efm32"
413 depends on !MMU
414 select ARCH_REQUIRE_GPIOLIB
415 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100416 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100417 select CLKSRC_OF
418 select COMMON_CLK
419 select CPU_V7M
420 select GENERIC_CLOCKEVENTS
421 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700422 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100423 select SPARSE_IRQ
424 select USE_OF
425 help
426 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
427 processors.
428
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000429config ARCH_EP93XX
430 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100431 select ARCH_HAS_HOLES_MEMORYMODEL
432 select ARCH_REQUIRE_GPIOLIB
433 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000434 select ARM_AMBA
435 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100436 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100437 select CPU_ARM920T
Arnd Bergmann5725aea2011-10-31 23:11:46 +0100438 select NEED_MACH_MEMORY_H
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000439 help
440 This enables support for the Cirrus EP93xx series of CPUs.
441
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442config ARCH_FOOTBRIDGE
443 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000444 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000446 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200447 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600448 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400449 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000450 help
451 Support for systems based on the DC21285 companion chip
452 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100454config ARCH_NETX
455 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100456 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100457 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000458 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100459 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000460 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100461 This enables support for systems based on the Hilscher NetX Soc
462
Russell King3b938be2007-05-12 11:25:44 +0100463config ARCH_IOP13XX
464 bool "IOP13xx-based"
465 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100466 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400467 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600468 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100469 select PCI
470 select PLAT_IOP
471 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000472 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100473 help
474 Support for Intel's IOP13XX (XScale) family of processors.
475
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100476config ARCH_IOP32X
477 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100478 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100479 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000480 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200481 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600482 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100483 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100484 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000485 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100486 Support for Intel's 80219 and IOP32X (XScale) family of
487 processors.
488
489config ARCH_IOP33X
490 bool "IOP33x-based"
491 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100492 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000493 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200494 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600495 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100496 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100497 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100498 help
499 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500
Russell King3b938be2007-05-12 11:25:44 +0100501config ARCH_IXP4XX
502 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100503 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500504 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100505 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100506 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100507 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000508 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100509 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100510 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100511 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600512 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200513 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100514 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100515 help
Russell King3b938be2007-05-12 11:25:44 +0100516 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100517
Saeed Bisharaedabd382009-08-06 15:12:43 +0300518config ARCH_DOVE
519 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300520 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100521 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300522 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100523 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100524 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100525 select PINCTRL
526 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200527 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300528 help
529 Support for the Marvell Dove SoC 88AP510
530
Saeed Bishara651c74c2008-06-22 22:45:06 +0200531config ARCH_KIRKWOOD
532 bool "Marvell Kirkwood"
Erik Benadaa8865652009-05-28 17:08:55 -0700533 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100534 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200535 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100536 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100537 select PCI
Jason Gunthorpe1dc831b2012-11-21 00:19:06 -0700538 select PCI_QUIRKS
Andrew Lunnf9e75922012-11-17 17:00:44 +0100539 select PINCTRL
540 select PINCTRL_KIRKWOOD
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200541 select PLAT_ORION_LEGACY
Saeed Bishara651c74c2008-06-22 22:45:06 +0200542 help
543 Support for the following Marvell Kirkwood series SoCs:
544 88F6180, 88F6192 and 88F6281.
545
Russell King788c9702009-04-26 14:21:59 +0100546config ARCH_MV78XX0
547 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700548 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100549 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100550 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100551 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100552 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200553 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100554 help
555 Support for the following Marvell MV78xx0 series SoCs:
556 MV781x0, MV782x0.
557
558config ARCH_ORION5X
559 bool "Marvell Orion"
560 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700561 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100562 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100563 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100564 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100565 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200566 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100567 help
568 Support for the following Marvell Orion 5x series SoCs:
569 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
570 Orion-2 (5281), Orion-1-90 (6183).
571
572config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500573 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100574 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100575 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100576 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100577 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100578 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800579 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800580 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800581 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800582 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100583 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400584 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100585 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500586 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100587
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100588config ARCH_KS8695
589 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100590 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200591 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100592 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200593 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100594 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100595 help
596 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
597 System-on-Chip devices.
598
Russell King788c9702009-04-26 14:21:59 +0100599config ARCH_W90X900
600 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100601 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100602 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100603 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100604 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100605 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200606 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100607 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
608 At present, the w90x900 has been renamed nuc900, regarding
609 the ARM series product line, you can login the following
610 link address to know more.
611
612 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
613 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400614
Russell King93e22562012-10-12 14:20:52 +0100615config ARCH_LPC32XX
616 bool "NXP LPC32XX"
617 select ARCH_REQUIRE_GPIOLIB
618 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000619 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100620 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100621 select CPU_ARM926T
622 select GENERIC_CLOCKEVENTS
623 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100624 select USE_OF
625 help
626 Support for the NXP LPC32XX family of processors
627
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700629 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100630 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100631 select ARCH_MTD_XIP
632 select ARCH_REQUIRE_GPIOLIB
633 select ARM_CPU_SUSPEND if PM
634 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100635 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100636 select CLKSRC_MMIO
Eric Miao981d0f32007-07-24 01:22:43 +0100637 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800638 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100639 select HAVE_IDE
640 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800641 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800642 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000643 help
eric miao2c8086a2007-09-11 19:13:17 -0700644 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600646config ARCH_MSM
647 bool "Qualcomm MSM (non-multiplatform)"
Pavel Machek923a0812010-06-02 11:11:12 -0700648 select ARCH_REQUIRE_GPIOLIB
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700649 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100650 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800651 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800652 Support for Qualcomm MSM/QSD based systems. This runs on the
653 apps processor of the MSM/QSD and depends on a shared memory
654 interface to the modem processor which runs the baseband
655 stack and controls some vital subsystems
656 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800657
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100658config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100659 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100660 select ARCH_SHMOBILE
Magnus Damm69469992013-06-10 18:46:47 +0900661 select ARM_PATCH_PHYS_VIRT
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900662 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100663 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800664 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800665 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900666 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000667 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000668 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000669 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700670 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200671 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100672 select PM_GENERIC_DOMAINS if PM
673 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000674 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100675 Support for Renesas ARM SoC platforms using a non-multiplatform
676 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
677 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000678
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679config ARCH_RPC
680 bool "RiscPC"
681 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100682 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100683 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000684 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100685 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200687 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100688 select HAVE_PATA_PLATFORM
689 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600690 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400691 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700692 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100693 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 help
695 On the Acorn Risc-PC, Linux can support the internal IDE disk and
696 CD-ROM interface, serial and parallel port, and the floppy drive.
697
698config ARCH_SA1100
699 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100700 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700701 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100702 select ARCH_SPARSEMEM_ENABLE
703 select CLKDEV_LOOKUP
704 select CLKSRC_MMIO
705 select CPU_FREQ
706 select CPU_SA1100
707 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200708 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100709 select ISA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400710 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100711 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000712 help
713 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900715config ARCH_S3C24XX
716 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900717 select ARCH_REQUIRE_GPIOLIB
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
Romain Naour7f78b6e2013-01-09 18:47:04 -0800721 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900722 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900723 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900724 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100725 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900726 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600727 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900728 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900730 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
731 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
732 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
733 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900734
Ben Dooksa08ab632008-10-21 14:06:39 +0100735config ARCH_S3C64XX
736 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900737 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200738 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100739 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100740 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100741 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200742 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900743 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900744 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800745 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900746 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900747 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900748 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100749 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700750 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100751 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100752 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100753 select S3C_DEV_NAND
754 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900755 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900756 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900757 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100758 help
759 Samsung S3C64XX series based systems
760
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100761config ARCH_DAVINCI
762 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100763 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700764 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100765 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700766 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100767 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100768 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100769 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500770 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530771 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100772 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100773 help
774 Support for TI's DaVinci platform.
775
Tony Lindgrena0694862013-01-11 11:24:20 -0800776config ARCH_OMAP1
777 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600778 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100779 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800780 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100781 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200782 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100783 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100784 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800785 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800786 select HAVE_IDE
787 select IRQ_DOMAIN
788 select NEED_MACH_IO_H if PCCARD
789 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100790 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800791 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800792
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793endchoice
794
Rob Herring387798b2012-09-06 13:41:12 -0500795menu "Multiple platform selection"
796 depends on ARCH_MULTIPLATFORM
797
798comment "CPU Core family selection"
799
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100800config ARCH_MULTI_V4
801 bool "ARMv4 based platforms (FA526)"
802 depends on !ARCH_MULTI_V6_V7
803 select ARCH_MULTI_V4_V5
804 select CPU_FA526
805
Rob Herring387798b2012-09-06 13:41:12 -0500806config ARCH_MULTI_V4T
807 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500808 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100809 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200810 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
811 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
812 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500813
814config ARCH_MULTI_V5
815 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500816 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100817 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100818 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200819 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
820 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500821
822config ARCH_MULTI_V4_V5
823 bool
824
825config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800826 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500827 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600828 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500829
830config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800831 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500832 default y
833 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100834 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600835 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500836
837config ARCH_MULTI_V6_V7
838 bool
Rob Herring9352b052014-01-31 15:36:10 -0600839 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500840
841config ARCH_MULTI_CPU_AUTO
842 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
843 select ARCH_MULTI_V5
844
845endmenu
846
Rob Herring05e2a3d2013-12-05 10:04:54 -0600847config ARCH_VIRT
848 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600849 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600850 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600851 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600852 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600853
Russell Kingccf50e22010-03-15 19:03:06 +0000854#
855# This is sorted alphabetically by mach-* pathname. However, plat-*
856# Kconfigs may be included either alphabetically (according to the
857# plat- suffix) or along side the corresponding mach-* source.
858#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200859source "arch/arm/mach-mvebu/Kconfig"
860
Russell King95b8f202010-01-14 11:43:54 +0000861source "arch/arm/mach-at91/Kconfig"
862
Anders Berg1d22924e2014-05-23 11:08:35 +0200863source "arch/arm/mach-axxia/Kconfig"
864
Christian Daudt8ac49e02012-11-19 09:46:10 -0800865source "arch/arm/mach-bcm/Kconfig"
866
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200867source "arch/arm/mach-berlin/Kconfig"
868
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869source "arch/arm/mach-clps711x/Kconfig"
870
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300871source "arch/arm/mach-cns3xxx/Kconfig"
872
Russell King95b8f202010-01-14 11:43:54 +0000873source "arch/arm/mach-davinci/Kconfig"
874
875source "arch/arm/mach-dove/Kconfig"
876
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000877source "arch/arm/mach-ep93xx/Kconfig"
878
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879source "arch/arm/mach-footbridge/Kconfig"
880
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200881source "arch/arm/mach-gemini/Kconfig"
882
Rob Herring387798b2012-09-06 13:41:12 -0500883source "arch/arm/mach-highbank/Kconfig"
884
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800885source "arch/arm/mach-hisi/Kconfig"
886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887source "arch/arm/mach-integrator/Kconfig"
888
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100889source "arch/arm/mach-iop32x/Kconfig"
890
891source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892
Dan Williams285f5fa2006-12-07 02:59:39 +0100893source "arch/arm/mach-iop13xx/Kconfig"
894
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895source "arch/arm/mach-ixp4xx/Kconfig"
896
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400897source "arch/arm/mach-keystone/Kconfig"
898
Russell King95b8f202010-01-14 11:43:54 +0000899source "arch/arm/mach-kirkwood/Kconfig"
900
901source "arch/arm/mach-ks8695/Kconfig"
902
Russell King95b8f202010-01-14 11:43:54 +0000903source "arch/arm/mach-msm/Kconfig"
904
Jonas Jensen17723fd32013-12-18 13:58:45 +0100905source "arch/arm/mach-moxart/Kconfig"
906
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200907source "arch/arm/mach-mv78xx0/Kconfig"
908
Shawn Guo3995eb82012-09-13 19:48:07 +0800909source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800911source "arch/arm/mach-mxs/Kconfig"
912
Russell King95b8f202010-01-14 11:43:54 +0000913source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800914
Russell King95b8f202010-01-14 11:43:54 +0000915source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000916
Daniel Tang9851ca52013-06-11 18:40:17 +1000917source "arch/arm/mach-nspire/Kconfig"
918
Tony Lindgrend48af152005-07-10 19:58:17 +0100919source "arch/arm/plat-omap/Kconfig"
920
921source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922
Tony Lindgren1dbae812005-11-10 14:26:51 +0000923source "arch/arm/mach-omap2/Kconfig"
924
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400925source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400926
Rob Herring387798b2012-09-06 13:41:12 -0500927source "arch/arm/mach-picoxcell/Kconfig"
928
Russell King95b8f202010-01-14 11:43:54 +0000929source "arch/arm/mach-pxa/Kconfig"
930source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
Russell King95b8f202010-01-14 11:43:54 +0000932source "arch/arm/mach-mmp/Kconfig"
933
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600934source "arch/arm/mach-qcom/Kconfig"
935
Russell King95b8f202010-01-14 11:43:54 +0000936source "arch/arm/mach-realview/Kconfig"
937
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200938source "arch/arm/mach-rockchip/Kconfig"
939
Russell King95b8f202010-01-14 11:43:54 +0000940source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300941
Rob Herring387798b2012-09-06 13:41:12 -0500942source "arch/arm/mach-socfpga/Kconfig"
943
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100944source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100945
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100946source "arch/arm/mach-sti/Kconfig"
947
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900948source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949
Ben Dooks431107e2010-01-26 10:11:04 +0900950source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100951
Kukjin Kim170f4e42010-02-24 16:40:44 +0900952source "arch/arm/mach-s5pv210/Kconfig"
953
Kukjin Kim83014572011-11-06 13:54:56 +0900954source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500955source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900956
Russell King882d01f2010-03-02 23:40:15 +0000957source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
Maxime Ripard3b526342012-11-08 12:40:16 +0100959source "arch/arm/mach-sunxi/Kconfig"
960
Barry Song156a0992012-08-23 13:41:58 +0800961source "arch/arm/mach-prima2/Kconfig"
962
Erik Gillingc5f80062010-01-21 16:53:02 -0800963source "arch/arm/mach-tegra/Kconfig"
964
Russell King95b8f202010-01-14 11:43:54 +0000965source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966
Russell King95b8f202010-01-14 11:43:54 +0000967source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968
969source "arch/arm/mach-versatile/Kconfig"
970
Russell Kingceade892010-02-11 21:44:53 +0000971source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000972source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000973
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300974source "arch/arm/mach-vt8500/Kconfig"
975
wanzongshun7ec80dd2008-12-03 03:55:38 +0100976source "arch/arm/mach-w90x900/Kconfig"
977
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600978source "arch/arm/mach-zynq/Kconfig"
979
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980# Definitions to make life easier
981config ARCH_ACORN
982 bool
983
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100984config PLAT_IOP
985 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700986 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100987
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400988config PLAT_ORION
989 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100990 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100991 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100992 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200993 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400994
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200995config PLAT_ORION_LEGACY
996 bool
997 select PLAT_ORION
998
Eric Miaobd5ce432009-01-20 12:06:01 +0800999config PLAT_PXA
1000 bool
1001
Russell Kingf4b8b312010-01-14 12:48:06 +00001002config PLAT_VERSATILE
1003 bool
1004
Russell Kinge3887712010-01-14 13:30:16 +00001005config ARM_TIMER_SP804
1006 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001007 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001008 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001009
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +09001010source "arch/arm/firmware/Kconfig"
1011
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012source arch/arm/mm/Kconfig
1013
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001014config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +01001015 bool "Enable iWMMXt support"
1016 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1017 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001018 help
1019 Enable support for iWMMXt context switching at run time if
1020 running on a CPU that supports it.
1021
eric miao52108642010-12-13 09:42:34 +01001022config MULTI_IRQ_HANDLER
1023 bool
1024 help
1025 Allow each machine to specify it's own IRQ handler at run time.
1026
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001027if !MMU
1028source "arch/arm/Kconfig-nommu"
1029endif
1030
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001031config PJ4B_ERRATA_4742
1032 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1033 depends on CPU_PJ4B && MACH_ARMADA_370
1034 default y
1035 help
1036 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1037 Event (WFE) IDLE states, a specific timing sensitivity exists between
1038 the retiring WFI/WFE instructions and the newly issued subsequent
1039 instructions. This sensitivity can result in a CPU hang scenario.
1040 Workaround:
1041 The software must insert either a Data Synchronization Barrier (DSB)
1042 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1043 instruction
1044
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001045config ARM_ERRATA_326103
1046 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1047 depends on CPU_V6
1048 help
1049 Executing a SWP instruction to read-only memory does not set bit 11
1050 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1051 treat the access as a read, preventing a COW from occurring and
1052 causing the faulting task to livelock.
1053
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001054config ARM_ERRATA_411920
1055 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001056 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001057 help
1058 Invalidation of the Instruction Cache operation can
1059 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1060 It does not affect the MPCore. This option enables the ARM Ltd.
1061 recommended workaround.
1062
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001063config ARM_ERRATA_430973
1064 bool "ARM errata: Stale prediction on replaced interworking branch"
1065 depends on CPU_V7
1066 help
1067 This option enables the workaround for the 430973 Cortex-A8
1068 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1069 interworking branch is replaced with another code sequence at the
1070 same virtual address, whether due to self-modifying code or virtual
1071 to physical address re-mapping, Cortex-A8 does not recover from the
1072 stale interworking branch prediction. This results in Cortex-A8
1073 executing the new code sequence in the incorrect ARM or Thumb state.
1074 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1075 and also flushes the branch target cache at every context switch.
1076 Note that setting specific bits in the ACTLR register may not be
1077 available in non-secure mode.
1078
Catalin Marinas855c5512009-04-30 17:06:15 +01001079config ARM_ERRATA_458693
1080 bool "ARM errata: Processor deadlock when a false hazard is created"
1081 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001082 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001083 help
1084 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1085 erratum. For very specific sequences of memory operations, it is
1086 possible for a hazard condition intended for a cache line to instead
1087 be incorrectly associated with a different cache line. This false
1088 hazard might then cause a processor deadlock. The workaround enables
1089 the L1 caching of the NEON accesses and disables the PLD instruction
1090 in the ACTLR register. Note that setting specific bits in the ACTLR
1091 register may not be available in non-secure mode.
1092
Catalin Marinas0516e462009-04-30 17:06:20 +01001093config ARM_ERRATA_460075
1094 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1095 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001096 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001097 help
1098 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1099 erratum. Any asynchronous access to the L2 cache may encounter a
1100 situation in which recent store transactions to the L2 cache are lost
1101 and overwritten with stale memory contents from external memory. The
1102 workaround disables the write-allocate mode for the L2 cache via the
1103 ACTLR register. Note that setting specific bits in the ACTLR register
1104 may not be available in non-secure mode.
1105
Will Deacon9f050272010-09-14 09:51:43 +01001106config ARM_ERRATA_742230
1107 bool "ARM errata: DMB operation may be faulty"
1108 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001109 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001110 help
1111 This option enables the workaround for the 742230 Cortex-A9
1112 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1113 between two write operations may not ensure the correct visibility
1114 ordering of the two writes. This workaround sets a specific bit in
1115 the diagnostic register of the Cortex-A9 which causes the DMB
1116 instruction to behave as a DSB, ensuring the correct behaviour of
1117 the two writes.
1118
Will Deacona672e992010-09-14 09:53:02 +01001119config ARM_ERRATA_742231
1120 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1121 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001122 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001123 help
1124 This option enables the workaround for the 742231 Cortex-A9
1125 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1126 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1127 accessing some data located in the same cache line, may get corrupted
1128 data due to bad handling of the address hazard when the line gets
1129 replaced from one of the CPUs at the same time as another CPU is
1130 accessing it. This workaround sets specific bits in the diagnostic
1131 register of the Cortex-A9 which reduces the linefill issuing
1132 capabilities of the processor.
1133
Jon Medhurst69155792013-06-07 10:35:35 +01001134config ARM_ERRATA_643719
1135 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1136 depends on CPU_V7 && SMP
1137 help
1138 This option enables the workaround for the 643719 Cortex-A9 (prior to
1139 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1140 register returns zero when it should return one. The workaround
1141 corrects this value, ensuring cache maintenance operations which use
1142 it behave as intended and avoiding data corruption.
1143
Will Deaconcdf357f2010-08-05 11:20:51 +01001144config ARM_ERRATA_720789
1145 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001146 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001147 help
1148 This option enables the workaround for the 720789 Cortex-A9 (prior to
1149 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1150 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1151 As a consequence of this erratum, some TLB entries which should be
1152 invalidated are not, resulting in an incoherency in the system page
1153 tables. The workaround changes the TLB flushing routines to invalidate
1154 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001155
1156config ARM_ERRATA_743622
1157 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1158 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001159 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001160 help
1161 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001162 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001163 optimisation in the Cortex-A9 Store Buffer may lead to data
1164 corruption. This workaround sets a specific bit in the diagnostic
1165 register of the Cortex-A9 which disables the Store Buffer
1166 optimisation, preventing the defect from occurring. This has no
1167 visible impact on the overall performance or power consumption of the
1168 processor.
1169
Will Deacon9a27c272011-02-18 16:36:35 +01001170config ARM_ERRATA_751472
1171 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001172 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001173 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001174 help
1175 This option enables the workaround for the 751472 Cortex-A9 (prior
1176 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1177 completion of a following broadcasted operation if the second
1178 operation is received by a CPU before the ICIALLUIS has completed,
1179 potentially leading to corrupted entries in the cache or TLB.
1180
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001181config ARM_ERRATA_754322
1182 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1183 depends on CPU_V7
1184 help
1185 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1186 r3p*) erratum. A speculative memory access may cause a page table walk
1187 which starts prior to an ASID switch but completes afterwards. This
1188 can populate the micro-TLB with a stale entry which may be hit with
1189 the new ASID. This workaround places two dsb instructions in the mm
1190 switching code so that no page table walks can cross the ASID switch.
1191
Will Deacon5dab26a2011-03-04 12:38:54 +01001192config ARM_ERRATA_754327
1193 bool "ARM errata: no automatic Store Buffer drain"
1194 depends on CPU_V7 && SMP
1195 help
1196 This option enables the workaround for the 754327 Cortex-A9 (prior to
1197 r2p0) erratum. The Store Buffer does not have any automatic draining
1198 mechanism and therefore a livelock may occur if an external agent
1199 continuously polls a memory location waiting to observe an update.
1200 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1201 written polling loops from denying visibility of updates to memory.
1202
Catalin Marinas145e10e2011-08-15 11:04:41 +01001203config ARM_ERRATA_364296
1204 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001205 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001206 help
1207 This options enables the workaround for the 364296 ARM1136
1208 r0p2 erratum (possible cache data corruption with
1209 hit-under-miss enabled). It sets the undocumented bit 31 in
1210 the auxiliary control register and the FI bit in the control
1211 register, thus disabling hit-under-miss without putting the
1212 processor into full low interrupt latency mode. ARM11MPCore
1213 is not affected.
1214
Will Deaconf630c1b2011-09-15 11:45:15 +01001215config ARM_ERRATA_764369
1216 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1217 depends on CPU_V7 && SMP
1218 help
1219 This option enables the workaround for erratum 764369
1220 affecting Cortex-A9 MPCore with two or more processors (all
1221 current revisions). Under certain timing circumstances, a data
1222 cache line maintenance operation by MVA targeting an Inner
1223 Shareable memory region may fail to proceed up to either the
1224 Point of Coherency or to the Point of Unification of the
1225 system. This workaround adds a DSB instruction before the
1226 relevant cache maintenance functions and sets a specific bit
1227 in the diagnostic control register of the SCU.
1228
Simon Horman7253b852012-09-28 02:12:45 +01001229config ARM_ERRATA_775420
1230 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1231 depends on CPU_V7
1232 help
1233 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1234 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1235 operation aborts with MMU exception, it might cause the processor
1236 to deadlock. This workaround puts DSB before executing ISB if
1237 an abort may occur on cache maintenance.
1238
Catalin Marinas93dc6882013-03-26 23:35:04 +01001239config ARM_ERRATA_798181
1240 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1241 depends on CPU_V7 && SMP
1242 help
1243 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1244 adequately shooting down all use of the old entries. This
1245 option enables the Linux kernel workaround for this erratum
1246 which sends an IPI to the CPUs that are running the same ASID
1247 as the one being invalidated.
1248
Will Deacon84b65042013-08-20 17:29:55 +01001249config ARM_ERRATA_773022
1250 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1251 depends on CPU_V7
1252 help
1253 This option enables the workaround for the 773022 Cortex-A15
1254 (up to r0p4) erratum. In certain rare sequences of code, the
1255 loop buffer may deliver incorrect instructions. This
1256 workaround disables the loop buffer to avoid the erratum.
1257
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258endmenu
1259
1260source "arch/arm/common/Kconfig"
1261
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262menu "Bus support"
1263
1264config ARM_AMBA
1265 bool
1266
1267config ISA
1268 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 help
1270 Find out whether you have ISA slots on your motherboard. ISA is the
1271 name of a bus system, i.e. the way the CPU talks to the other stuff
1272 inside your box. Other bus systems are PCI, EISA, MicroChannel
1273 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1274 newer boards don't support it. If you have ISA, say Y, otherwise N.
1275
Russell King065909b2006-01-04 15:44:16 +00001276# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277config ISA_DMA
1278 bool
Russell King065909b2006-01-04 15:44:16 +00001279 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280
Russell King065909b2006-01-04 15:44:16 +00001281# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001282config ISA_DMA_API
1283 bool
Al Viro5cae8412005-05-04 05:39:22 +01001284
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001286 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287 help
1288 Find out whether you have a PCI motherboard. PCI is the name of a
1289 bus system, i.e. the way the CPU talks to the other stuff inside
1290 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1291 VESA. If you have PCI, say Y, otherwise N.
1292
Anton Vorontsov52882172010-04-19 13:20:49 +01001293config PCI_DOMAINS
1294 bool
1295 depends on PCI
1296
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001297config PCI_NANOENGINE
1298 bool "BSE nanoEngine PCI support"
1299 depends on SA1100_NANOENGINE
1300 help
1301 Enable PCI on the BSE nanoEngine board.
1302
Matthew Wilcox36e23592007-07-10 10:54:40 -06001303config PCI_SYSCALL
1304 def_bool PCI
1305
Mike Rapoporta0113a92007-11-25 08:55:34 +01001306config PCI_HOST_ITE8152
1307 bool
1308 depends on PCI && MACH_ARMCORE
1309 default y
1310 select DMABOUNCE
1311
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001313source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314
1315source "drivers/pcmcia/Kconfig"
1316
1317endmenu
1318
1319menu "Kernel Features"
1320
Dave Martin3b556582011-12-07 15:38:04 +00001321config HAVE_SMP
1322 bool
1323 help
1324 This option should be selected by machines which have an SMP-
1325 capable CPU.
1326
1327 The only effect of this option is to make the SMP-related
1328 options available to the user for configuration.
1329
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001331 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001332 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001333 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001334 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001335 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 help
1337 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001338 a system with only one CPU, say N. If you have a system with more
1339 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
Robert Graffham4a474152014-01-23 15:55:29 -08001341 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001343 you say Y here, the kernel will run on many, but not all,
1344 uniprocessor machines. On a uniprocessor machine, the kernel
1345 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346
Paul Bolle395cf962011-08-15 02:02:26 +02001347 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001349 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350
1351 If you don't know what to do here, say N.
1352
Russell Kingf00ec482010-09-04 10:47:48 +01001353config SMP_ON_UP
1354 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001355 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001356 default y
1357 help
1358 SMP kernels contain instructions which fail on non-SMP processors.
1359 Enabling this option allows the kernel to modify itself to make
1360 these instructions safe. Disabling it allows about 1K of space
1361 savings.
1362
1363 If you don't know what to do here, say Y.
1364
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001365config ARM_CPU_TOPOLOGY
1366 bool "Support cpu topology definition"
1367 depends on SMP && CPU_V7
1368 default y
1369 help
1370 Support ARM cpu topology definition. The MPIDR register defines
1371 affinity between processors which is then used to describe the cpu
1372 topology of an ARM System.
1373
1374config SCHED_MC
1375 bool "Multi-core scheduler support"
1376 depends on ARM_CPU_TOPOLOGY
1377 help
1378 Multi-core scheduler support improves the CPU scheduler's decision
1379 making when dealing with multi-core CPU chips at a cost of slightly
1380 increased overhead in some places. If unsure say N here.
1381
1382config SCHED_SMT
1383 bool "SMT scheduler support"
1384 depends on ARM_CPU_TOPOLOGY
1385 help
1386 Improves the CPU scheduler's decision making when dealing with
1387 MultiThreading at a cost of slightly increased overhead in some
1388 places. If unsure say N here.
1389
Russell Kinga8cbcd92009-05-16 11:51:14 +01001390config HAVE_ARM_SCU
1391 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001392 help
1393 This option enables support for the ARM system coherency unit
1394
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001395config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001396 bool "Architected timer support"
1397 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001398 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001399 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001400 help
1401 This option enables support for the ARM architected timer
1402
Russell Kingf32f4ce2009-05-16 12:14:21 +01001403config HAVE_ARM_TWD
1404 bool
1405 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001406 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001407 help
1408 This options enables support for the ARM timer and watchdog unit
1409
Nicolas Pitree8db2882012-04-12 02:45:22 -04001410config MCPM
1411 bool "Multi-Cluster Power Management"
1412 depends on CPU_V7 && SMP
1413 help
1414 This option provides the common power management infrastructure
1415 for (multi-)cluster based systems, such as big.LITTLE based
1416 systems.
1417
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001418config BIG_LITTLE
1419 bool "big.LITTLE support (Experimental)"
1420 depends on CPU_V7 && SMP
1421 select MCPM
1422 help
1423 This option enables support selections for the big.LITTLE
1424 system architecture.
1425
1426config BL_SWITCHER
1427 bool "big.LITTLE switcher support"
1428 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001429 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001430 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001431 help
1432 The big.LITTLE "switcher" provides the core functionality to
1433 transparently handle transition between a cluster of A15's
1434 and a cluster of A7's in a big.LITTLE system.
1435
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001436config BL_SWITCHER_DUMMY_IF
1437 tristate "Simple big.LITTLE switcher user interface"
1438 depends on BL_SWITCHER && DEBUG_KERNEL
1439 help
1440 This is a simple and dummy char dev interface to control
1441 the big.LITTLE switcher core code. It is meant for
1442 debugging purposes only.
1443
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001444choice
1445 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001446 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001447 default VMSPLIT_3G
1448 help
1449 Select the desired split between kernel and user memory.
1450
1451 If you are not absolutely sure what you are doing, leave this
1452 option alone!
1453
1454 config VMSPLIT_3G
1455 bool "3G/1G user/kernel split"
1456 config VMSPLIT_2G
1457 bool "2G/2G user/kernel split"
1458 config VMSPLIT_1G
1459 bool "1G/3G user/kernel split"
1460endchoice
1461
1462config PAGE_OFFSET
1463 hex
Russell King006fa252014-02-26 19:40:46 +00001464 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001465 default 0x40000000 if VMSPLIT_1G
1466 default 0x80000000 if VMSPLIT_2G
1467 default 0xC0000000
1468
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469config NR_CPUS
1470 int "Maximum number of CPUs (2-32)"
1471 range 2 32
1472 depends on SMP
1473 default "4"
1474
Russell Kinga054a812005-11-02 22:24:33 +00001475config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001476 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001477 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001478 help
1479 Say Y here to experiment with turning CPUs off and on. CPUs
1480 can be controlled through /sys/devices/system/cpu.
1481
Will Deacon2bdd4242012-12-12 19:20:52 +00001482config ARM_PSCI
1483 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1484 depends on CPU_V7
1485 help
1486 Say Y here if you want Linux to communicate with system firmware
1487 implementing the PSCI specification for CPU-centric power
1488 management operations described in ARM document number ARM DEN
1489 0022A ("Power State Coordination Interface System Software on
1490 ARM processors").
1491
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001492# The GPIO number here must be sorted by descending number. In case of
1493# a multiplatform kernel, we just want the highest value required by the
1494# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001495config ARCH_NR_GPIO
1496 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001497 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tomasz Figaaa425872014-07-03 13:17:12 +02001498 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1499 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001500 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001501 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001502 default 352 if ARCH_VT8500
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001503 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001504 default 0
1505 help
1506 Maximum number of GPIOs in the system.
1507
1508 If unsure, leave the default value.
1509
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001510source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511
Russell Kingc9218b12013-04-27 23:31:10 +01001512config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001513 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001514 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001515 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001516 default AT91_TIMER_HZ if ARCH_AT91
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001517 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001518 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001519
1520choice
Russell King47d84682013-09-10 23:47:55 +01001521 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001522 prompt "Timer frequency"
1523
1524config HZ_100
1525 bool "100 Hz"
1526
1527config HZ_200
1528 bool "200 Hz"
1529
1530config HZ_250
1531 bool "250 Hz"
1532
1533config HZ_300
1534 bool "300 Hz"
1535
1536config HZ_500
1537 bool "500 Hz"
1538
1539config HZ_1000
1540 bool "1000 Hz"
1541
1542endchoice
1543
1544config HZ
1545 int
Russell King47d84682013-09-10 23:47:55 +01001546 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001547 default 100 if HZ_100
1548 default 200 if HZ_200
1549 default 250 if HZ_250
1550 default 300 if HZ_300
1551 default 500 if HZ_500
1552 default 1000
1553
1554config SCHED_HRTICK
1555 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001556
Catalin Marinas16c79652009-07-24 12:33:02 +01001557config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001558 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001559 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001560 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001561 select AEABI
1562 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001563 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001564 help
1565 By enabling this option, the kernel will be compiled in
1566 Thumb-2 mode. A compiler/assembler that understand the unified
1567 ARM-Thumb syntax is needed.
1568
1569 If unsure, say N.
1570
Dave Martin6f685c52011-03-03 11:41:12 +01001571config THUMB2_AVOID_R_ARM_THM_JUMP11
1572 bool "Work around buggy Thumb-2 short branch relocations in gas"
1573 depends on THUMB2_KERNEL && MODULES
1574 default y
1575 help
1576 Various binutils versions can resolve Thumb-2 branches to
1577 locally-defined, preemptible global symbols as short-range "b.n"
1578 branch instructions.
1579
1580 This is a problem, because there's no guarantee the final
1581 destination of the symbol, or any candidate locations for a
1582 trampoline, are within range of the branch. For this reason, the
1583 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1584 relocation in modules at all, and it makes little sense to add
1585 support.
1586
1587 The symptom is that the kernel fails with an "unsupported
1588 relocation" error when loading some modules.
1589
1590 Until fixed tools are available, passing
1591 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1592 code which hits this problem, at the cost of a bit of extra runtime
1593 stack usage in some cases.
1594
1595 The problem is described in more detail at:
1596 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1597
1598 Only Thumb-2 kernels are affected.
1599
1600 Unless you are sure your tools don't have this problem, say Y.
1601
Catalin Marinas0becb082009-07-24 12:32:53 +01001602config ARM_ASM_UNIFIED
1603 bool
1604
Nicolas Pitre704bdda2006-01-14 16:33:50 +00001605config AEABI
1606 bool "Use the ARM EABI to compile the kernel"
1607 help
1608 This option allows for the kernel to be compiled using the latest
1609 ARM ABI (aka EABI). This is only useful if you are using a user
1610 space environment that is also compiled with EABI.
1611
1612 Since there are major incompatibilities between the legacy ABI and
1613 EABI, especially with regard to structure member alignment, this
1614 option also changes the kernel syscall calling convention to
1615 disambiguate both ABIs and allow for backward compatibility support
1616 (selected with CONFIG_OABI_COMPAT).
1617
1618 To use this you need GCC version 4.0.0 or later.
1619
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001620config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001621 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001622 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001623 help
1624 This option preserves the old syscall interface along with the
1625 new (ARM EABI) one. It also provides a compatibility layer to
1626 intercept syscalls that have structure arguments which layout
1627 in memory differs between the legacy ABI and the new ARM EABI
1628 (only for non "thumb" binaries). This option adds a tiny
1629 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001630
1631 The seccomp filter system will not be available when this is
1632 selected, since there is no way yet to sensibly distinguish
1633 between calling conventions during filtering.
1634
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001635 If you know you'll be using only pure EABI user space then you
1636 can say N here. If this option is not selected and you attempt
1637 to execute a legacy ABI binary then the result will be
1638 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001639 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001640
Mel Gormaneb335752009-05-13 17:34:48 +01001641config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001642 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001643
Russell King05944d72006-11-30 20:43:51 +00001644config ARCH_SPARSEMEM_ENABLE
1645 bool
1646
Russell King07a2f732008-10-01 21:39:58 +01001647config ARCH_SPARSEMEM_DEFAULT
1648 def_bool ARCH_SPARSEMEM_ENABLE
1649
Russell King05944d72006-11-30 20:43:51 +00001650config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001651 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001652
Will Deacon7b7bf492011-05-19 13:21:14 +01001653config HAVE_ARCH_PFN_VALID
1654 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1655
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001656config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001657 bool "High Memory Support"
1658 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001659 help
1660 The address space of ARM processors is only 4 Gigabytes large
1661 and it has to accommodate user address space, kernel address
1662 space as well as some memory mapped IO. That means that, if you
1663 have a large amount of physical memory and/or IO, not all of the
1664 memory can be "permanently mapped" by the kernel. The physical
1665 memory that is not permanently mapped is called "high memory".
1666
1667 Depending on the selected kernel/user memory split, minimum
1668 vmalloc space and actual amount of RAM, you may not need this
1669 option which should result in a slightly faster kernel.
1670
1671 If unsure, say n.
1672
Russell King65cec8e2009-08-17 20:02:06 +01001673config HIGHPTE
1674 bool "Allocate 2nd-level pagetables from highmem"
1675 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001676
Jamie Iles1b8873a2010-02-02 20:25:44 +01001677config HW_PERF_EVENTS
1678 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001679 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001680 default y
1681 help
1682 Enable hardware performance counter support for perf events. If
1683 disabled, perf events will use software events only.
1684
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001685config SYS_SUPPORTS_HUGETLBFS
1686 def_bool y
1687 depends on ARM_LPAE
1688
Catalin Marinas8d962502012-07-25 14:39:26 +01001689config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1690 def_bool y
1691 depends on ARM_LPAE
1692
Steven Capper4bfab202013-07-26 14:58:22 +01001693config ARCH_WANT_GENERAL_HUGETLB
1694 def_bool y
1695
Dave Hansen3f22ab22005-06-23 00:07:43 -07001696source "mm/Kconfig"
1697
Magnus Dammc1b2d972010-07-05 10:00:11 +01001698config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001699 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1700 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001701 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001702 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001703 default "11"
1704 help
1705 The kernel memory allocator divides physically contiguous memory
1706 blocks into "zones", where each zone is a power of two number of
1707 pages. This option selects the largest power of two that the kernel
1708 keeps in the memory allocator. If you need to allocate very large
1709 blocks of physically contiguous memory, then you may need to
1710 increase this value.
1711
1712 This config option is actually maximum order plus one. For example,
1713 a value of 11 means that the largest free memory block is 2^10 pages.
1714
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715config ALIGNMENT_TRAP
1716 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001717 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001719 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001721 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001722 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1723 address divisible by 4. On 32-bit ARM processors, these non-aligned
1724 fetch/store instructions will be emulated in software if you say
1725 here, which has a severe performance impact. This is necessary for
1726 correct operation of some network protocols. With an IP-only
1727 configuration it is safe to say N, otherwise say Y.
1728
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001729config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001730 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1731 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001732 default y if CPU_FEROCEON
1733 help
1734 Implement faster copy_to_user and clear_user methods for CPU
1735 cores where a 8-word STM instruction give significantly higher
1736 memory write throughput than a sequence of individual 32bit stores.
1737
1738 A possible side effect is a slight increase in scheduling latency
1739 between threads sharing the same address space if they invoke
1740 such copy operations with large buffers.
1741
1742 However, if the CPU data cache is using a write-allocate mode,
1743 this option is unlikely to provide any performance gain.
1744
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001745config SECCOMP
1746 bool
1747 prompt "Enable seccomp to safely compute untrusted bytecode"
1748 ---help---
1749 This kernel feature is useful for number crunching applications
1750 that may need to compute untrusted bytecode during their
1751 execution. By using pipes or other transports made available to
1752 the process as file descriptors supporting the read/write
1753 syscalls, it's possible to isolate those applications in
1754 their own address space using seccomp. Once seccomp is
1755 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1756 and the task is only allowed to execute a few safe syscalls
1757 defined by each seccomp mode.
1758
Stefano Stabellini06e62952013-10-15 15:47:14 +00001759config SWIOTLB
1760 def_bool y
1761
1762config IOMMU_HELPER
1763 def_bool SWIOTLB
1764
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001765config XEN_DOM0
1766 def_bool y
1767 depends on XEN
1768
1769config XEN
1770 bool "Xen guest support on ARM (EXPERIMENTAL)"
Ian Campbell85323a92013-03-07 07:17:25 +00001771 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001772 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001773 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001774 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001775 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001776 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001777 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001778 help
1779 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1780
Linus Torvalds1da177e2005-04-16 15:20:36 -07001781endmenu
1782
1783menu "Boot options"
1784
Grant Likely9eb8f672011-04-28 14:27:20 -06001785config USE_OF
1786 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001787 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001788 select OF
1789 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001790 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001791 help
1792 Include support for flattened device tree machine descriptions.
1793
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001794config ATAGS
1795 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1796 default y
1797 help
1798 This is the traditional way of passing data to the kernel at boot
1799 time. If you are solely relying on the flattened device tree (or
1800 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1801 to remove ATAGS support from your kernel binary. If unsure,
1802 leave this to y.
1803
1804config DEPRECATED_PARAM_STRUCT
1805 bool "Provide old way to pass kernel parameters"
1806 depends on ATAGS
1807 help
1808 This was deprecated in 2001 and announced to live on for 5 years.
1809 Some old boot loaders still use this way.
1810
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811# Compressed boot loader in ROM. Yes, we really want to ask about
1812# TEXT and BSS so we preserve their values in the config files.
1813config ZBOOT_ROM_TEXT
1814 hex "Compressed ROM boot loader base address"
1815 default "0"
1816 help
1817 The physical address at which the ROM-able zImage is to be
1818 placed in the target. Platforms which normally make use of
1819 ROM-able zImage formats normally set this to a suitable
1820 value in their defconfig file.
1821
1822 If ZBOOT_ROM is not enabled, this has no effect.
1823
1824config ZBOOT_ROM_BSS
1825 hex "Compressed ROM boot loader BSS address"
1826 default "0"
1827 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001828 The base address of an area of read/write memory in the target
1829 for the ROM-able zImage which must be available while the
1830 decompressor is running. It must be large enough to hold the
1831 entire decompressed kernel plus an additional 128 KiB.
1832 Platforms which normally make use of ROM-able zImage formats
1833 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834
1835 If ZBOOT_ROM is not enabled, this has no effect.
1836
1837config ZBOOT_ROM
1838 bool "Compressed boot loader in ROM/flash"
1839 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001840 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 help
1842 Say Y here if you intend to execute your compressed kernel image
1843 (zImage) directly from ROM or flash. If unsure, say N.
1844
Simon Horman090ab3f2011-04-26 06:29:53 +01001845choice
1846 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001847 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001848 default ZBOOT_ROM_NONE
1849 help
1850 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001851 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001852 kernel image to an MMC or SD card and boot the kernel straight
1853 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001854 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001855 rest the kernel image to RAM.
1856
1857config ZBOOT_ROM_NONE
1858 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1859 help
1860 Do not load image from SD or MMC
1861
Simon Hormanf45b1142011-01-11 04:01:08 +01001862config ZBOOT_ROM_MMCIF
1863 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001864 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001865 Load image from MMCIF hardware block.
1866
1867config ZBOOT_ROM_SH_MOBILE_SDHI
1868 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1869 help
1870 Load image from SDHI hardware block
1871
1872endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001873
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001874config ARM_APPENDED_DTB
1875 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001876 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001877 help
1878 With this option, the boot code will look for a device tree binary
1879 (DTB) appended to zImage
1880 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1881
1882 This is meant as a backward compatibility convenience for those
1883 systems with a bootloader that can't be upgraded to accommodate
1884 the documented boot protocol using a device tree.
1885
1886 Beware that there is very little in terms of protection against
1887 this option being confused by leftover garbage in memory that might
1888 look like a DTB header after a reboot if no actual DTB is appended
1889 to zImage. Do not leave this option active in a production kernel
1890 if you don't intend to always append a DTB. Proper passing of the
1891 location into r2 of a bootloader provided DTB is always preferable
1892 to this option.
1893
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001894config ARM_ATAG_DTB_COMPAT
1895 bool "Supplement the appended DTB with traditional ATAG information"
1896 depends on ARM_APPENDED_DTB
1897 help
1898 Some old bootloaders can't be updated to a DTB capable one, yet
1899 they provide ATAGs with memory configuration, the ramdisk address,
1900 the kernel cmdline string, etc. Such information is dynamically
1901 provided by the bootloader and can't always be stored in a static
1902 DTB. To allow a device tree enabled kernel to be used with such
1903 bootloaders, this option allows zImage to extract the information
1904 from the ATAG list and store it at run time into the appended DTB.
1905
Genoud Richardd0f34a12012-06-26 16:37:59 +01001906choice
1907 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1908 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1909
1910config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1911 bool "Use bootloader kernel arguments if available"
1912 help
1913 Uses the command-line options passed by the boot loader instead of
1914 the device tree bootargs property. If the boot loader doesn't provide
1915 any, the device tree bootargs property will be used.
1916
1917config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1918 bool "Extend with bootloader kernel arguments"
1919 help
1920 The command-line arguments provided by the boot loader will be
1921 appended to the the device tree bootargs property.
1922
1923endchoice
1924
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925config CMDLINE
1926 string "Default kernel command string"
1927 default ""
1928 help
1929 On some architectures (EBSA110 and CATS), there is currently no way
1930 for the boot loader to pass arguments to the kernel. For these
1931 architectures, you should supply some command-line options at build
1932 time by entering them here. As a minimum, you should specify the
1933 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1934
Victor Boivie4394c122011-05-04 17:07:55 +01001935choice
1936 prompt "Kernel command line type" if CMDLINE != ""
1937 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001938 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001939
1940config CMDLINE_FROM_BOOTLOADER
1941 bool "Use bootloader kernel arguments if available"
1942 help
1943 Uses the command-line options passed by the boot loader. If
1944 the boot loader doesn't provide any, the default kernel command
1945 string provided in CMDLINE will be used.
1946
1947config CMDLINE_EXTEND
1948 bool "Extend bootloader kernel arguments"
1949 help
1950 The command-line arguments provided by the boot loader will be
1951 appended to the default kernel command string.
1952
Alexander Holler92d20402010-02-16 19:04:53 +01001953config CMDLINE_FORCE
1954 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001955 help
1956 Always use the default kernel command string, even if the boot
1957 loader passes other arguments to the kernel.
1958 This is useful if you cannot or don't want to change the
1959 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001960endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001961
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962config XIP_KERNEL
1963 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001964 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965 help
1966 Execute-In-Place allows the kernel to run from non-volatile storage
1967 directly addressable by the CPU, such as NOR flash. This saves RAM
1968 space since the text section of the kernel is not loaded from flash
1969 to RAM. Read-write sections, such as the data section and stack,
1970 are still copied to RAM. The XIP kernel is not compressed since
1971 it has to run directly from flash, so it will take more space to
1972 store it. The flash address used to link the kernel object files,
1973 and for storing it, is configuration dependent. Therefore, if you
1974 say Y here, you must know the proper physical address where to
1975 store the kernel image depending on your own flash memory usage.
1976
1977 Also note that the make target becomes "make xipImage" rather than
1978 "make zImage" or "make Image". The final kernel binary to put in
1979 ROM memory will be arch/arm/boot/xipImage.
1980
1981 If unsure, say N.
1982
1983config XIP_PHYS_ADDR
1984 hex "XIP Kernel Physical Location"
1985 depends on XIP_KERNEL
1986 default "0x00080000"
1987 help
1988 This is the physical address in your flash memory the kernel will
1989 be linked for and stored to. This address is dependent on your
1990 own flash usage.
1991
Richard Purdiec587e4a2007-02-06 21:29:00 +01001992config KEXEC
1993 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001994 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001995 help
1996 kexec is a system call that implements the ability to shutdown your
1997 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001998 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001999 you can start any kernel with it, not just Linux.
2000
2001 It is an ongoing process to be certain the hardware in a machine
2002 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002003 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002004
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002005config ATAGS_PROC
2006 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002007 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002008 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002009 help
2010 Should the atags used to boot the kernel be exported in an "atags"
2011 file in procfs. Useful with kexec.
2012
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002013config CRASH_DUMP
2014 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002015 help
2016 Generate crash dump after being started by kexec. This should
2017 be normally only set in special crash dump kernels which are
2018 loaded in the main kernel with kexec-tools into a specially
2019 reserved region and then later executed after a crash by
2020 kdump/kexec. The crash dump kernel must be compiled to a
2021 memory address not used by the main kernel
2022
2023 For more details see Documentation/kdump/kdump.txt
2024
Eric Miaoe69edc792010-07-05 15:56:50 +02002025config AUTO_ZRELADDR
2026 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02002027 help
2028 ZRELADDR is the physical address where the decompressed kernel
2029 image will be placed. If AUTO_ZRELADDR is selected, the address
2030 will be determined at run-time by masking the current IP with
2031 0xf8000000. This assumes the zImage being placed in the first 128MB
2032 from start of memory.
2033
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034endmenu
2035
Russell Kingac9d7ef2008-08-18 17:26:00 +01002036menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039
Russell Kingac9d7ef2008-08-18 17:26:00 +01002040source "drivers/cpuidle/Kconfig"
2041
2042endmenu
2043
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044menu "Floating point emulation"
2045
2046comment "At least one emulation must be selected"
2047
2048config FPE_NWFPE
2049 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002050 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051 ---help---
2052 Say Y to include the NWFPE floating point emulator in the kernel.
2053 This is necessary to run most binaries. Linux does not currently
2054 support floating point hardware so you need to say Y here even if
2055 your machine has an FPA or floating point co-processor podule.
2056
2057 You may say N here if you are going to load the Acorn FPEmulator
2058 early in the bootup.
2059
2060config FPE_NWFPE_XP
2061 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002062 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063 help
2064 Say Y to include 80-bit support in the kernel floating-point
2065 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2066 Note that gcc does not generate 80-bit operations by default,
2067 so in most cases this option only enlarges the size of the
2068 floating point emulator without any good reason.
2069
2070 You almost surely want to say N here.
2071
2072config FPE_FASTFPE
2073 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002074 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075 ---help---
2076 Say Y here to include the FAST floating point emulator in the kernel.
2077 This is an experimental much faster emulator which now also has full
2078 precision for the mantissa. It does not support any exceptions.
2079 It is very simple, and approximately 3-6 times faster than NWFPE.
2080
2081 It should be sufficient for most programs. It may be not suitable
2082 for scientific calculations, but you have to check this for yourself.
2083 If you do not feel you need a faster FP emulation you should better
2084 choose NWFPE.
2085
2086config VFP
2087 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002088 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 help
2090 Say Y to include VFP support code in the kernel. This is needed
2091 if your hardware includes a VFP unit.
2092
2093 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2094 release notes and additional status information.
2095
2096 Say N if your target does not have VFP hardware.
2097
Catalin Marinas25ebee02007-09-25 15:22:24 +01002098config VFPv3
2099 bool
2100 depends on VFP
2101 default y if CPU_V7
2102
Catalin Marinasb5872db2008-01-10 19:16:17 +01002103config NEON
2104 bool "Advanced SIMD (NEON) Extension support"
2105 depends on VFPv3 && CPU_V7
2106 help
2107 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2108 Extension.
2109
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002110config KERNEL_MODE_NEON
2111 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002112 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002113 help
2114 Say Y to include support for NEON in kernel mode.
2115
Linus Torvalds1da177e2005-04-16 15:20:36 -07002116endmenu
2117
2118menu "Userspace binary formats"
2119
2120source "fs/Kconfig.binfmt"
2121
2122config ARTHUR
2123 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +00002124 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002125 help
2126 Say Y here to include the kernel code necessary if you want to run
2127 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2128 experimental; if this sounds frightening, say N and sleep in peace.
2129 You can also say M here to compile this support as a module (which
2130 will be called arthur).
2131
2132endmenu
2133
2134menu "Power management options"
2135
Russell Kingeceab4a2005-11-15 11:31:41 +00002136source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137
Johannes Bergf4cb5702007-12-08 02:14:00 +01002138config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002139 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002140 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002141 def_bool y
2142
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002143config ARM_CPU_SUSPEND
2144 def_bool PM_SLEEP
2145
Sebastian Capella603fb422014-03-25 01:20:29 +01002146config ARCH_HIBERNATION_POSSIBLE
2147 bool
2148 depends on MMU
2149 default y if ARCH_SUSPEND_POSSIBLE
2150
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151endmenu
2152
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002153source "net/Kconfig"
2154
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002155source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002156
2157source "fs/Kconfig"
2158
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159source "arch/arm/Kconfig.debug"
2160
2161source "security/Kconfig"
2162
2163source "crypto/Kconfig"
2164
2165source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002166
2167source "arch/arm/kvm/Kconfig"