blob: 1034379866841bac42e907c0e7885b1b116cc321 [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
Will Deacon0cbad9c2013-10-09 17:19:22 +01009 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010010 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010011 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010012 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010013 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacon39b175a2012-12-04 12:57:11 +010014 select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN && MMU
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010015 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010016 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010017 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010018 select GENERIC_IRQ_PROBE
19 select GENERIC_IRQ_SHOW
Russell Kingb1b3f492012-10-06 17:12:25 +010020 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070021 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_SMP_IDLE_THREAD
23 select GENERIC_STRNCPY_FROM_USER
24 select GENERIC_STRNLEN_USER
25 select HARDIRQS_SW_RESEND
Rabin Vincent09f05d82012-02-18 17:52:41 +010026 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060027 select HAVE_ARCH_KGDB
Kees Cook91702172013-11-09 00:51:56 +010028 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010029 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010030 select HAVE_BPF_JIT
Russell King171b3f02013-09-12 21:24:42 +010031 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010032 select HAVE_C_RECORDMCOUNT
33 select HAVE_DEBUG_KMEMLEAK
34 select HAVE_DMA_API_DEBUG
35 select HAVE_DMA_ATTRS
36 select HAVE_DMA_CONTIGUOUS if MMU
37 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
38 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
39 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
40 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
41 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010042 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
43 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010044 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010045 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070046 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010047 select HAVE_KERNEL_LZMA
48 select HAVE_KERNEL_LZO
49 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010050 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080051 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010052 select HAVE_MEMBLOCK
Russell King171b3f02013-09-12 21:24:42 +010053 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jamie Iles7ada1892010-02-02 20:24:58 +010055 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010056 select HAVE_PERF_REGS
57 select HAVE_PERF_USER_STACK_DUMP
Will Deacone513f8b2010-06-25 12:24:53 +010058 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010059 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070060 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070061 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010062 select IRQ_FORCED_THREADING
Anna-Maria Gleixner3d92a712012-05-18 16:45:44 +000063 select KTIME_SCALAR
Russell King171b3f02013-09-12 21:24:42 +010064 select MODULES_USE_ELF_REL
65 select OLD_SIGACTION
66 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010067 select PERF_USE_VMALLOC
68 select RTC_LIB
69 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010070 # Above selects are sorted alphabetically; please add new ones
71 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 help
73 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000074 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000076 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 Europe. There is an ARM Linux project with a web page at
78 <http://www.arm.linux.org.uk/>.
79
Russell King74facff2011-06-02 11:16:22 +010080config ARM_HAS_SG_CHAIN
81 bool
82
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020083config NEED_SG_DMA_LENGTH
84 bool
85
86config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020087 bool
Russell Kingb1b3f492012-10-06 17:12:25 +010088 select ARM_HAS_SG_CHAIN
89 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020090
Seung-Woo Kim60460ab2013-02-06 13:21:14 +090091if ARM_DMA_USE_IOMMU
92
93config ARM_DMA_IOMMU_ALIGNMENT
94 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
95 range 4 9
96 default 8
97 help
98 DMA mapping framework by default aligns all buffers to the smallest
99 PAGE_SIZE order which is greater than or equal to the requested buffer
100 size. This works well for buffers up to a few hundreds kilobytes, but
101 for larger buffers it just a waste of address space. Drivers which has
102 relatively small addressing window (like 64Mib) might run out of
103 virtual space with just a few allocations.
104
105 With this parameter you can specify the maximum PAGE_SIZE order for
106 DMA IOMMU buffers. Larger buffers will be aligned only to this
107 specified order. The order is expressed as a power of two multiplied
108 by the PAGE_SIZE.
109
110endif
111
Russell King1a189b92008-04-13 21:41:55 +0100112config HAVE_PWM
113 bool
114
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100115config MIGHT_HAVE_PCI
116 bool
117
Ralf Baechle75e71532007-02-09 17:08:58 +0000118config SYS_SUPPORTS_APM_EMULATION
119 bool
120
Linus Walleijbc581772009-09-15 17:30:37 +0100121config HAVE_TCM
122 bool
123 select GENERIC_ALLOCATOR
124
Russell Kinge119bff2010-01-10 17:23:29 +0000125config HAVE_PROC_CPU
126 bool
127
Al Viro5ea81762007-02-11 15:41:31 +0000128config NO_IOPORT
129 bool
Al Viro5ea81762007-02-11 15:41:31 +0000130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131config EISA
132 bool
133 ---help---
134 The Extended Industry Standard Architecture (EISA) bus was
135 developed as an open alternative to the IBM MicroChannel bus.
136
137 The EISA bus provided some of the features of the IBM MicroChannel
138 bus while maintaining backward compatibility with cards made for
139 the older ISA bus. The EISA bus saw limited use between 1988 and
140 1995 when it was made obsolete by the PCI bus.
141
142 Say Y here if you are building a kernel for an EISA-based machine.
143
144 Otherwise, say N.
145
146config SBUS
147 bool
148
Russell Kingf16fb1e2007-04-28 09:59:37 +0100149config STACKTRACE_SUPPORT
150 bool
151 default y
152
Nicolas Pitref76e9152008-04-24 01:31:46 -0400153config HAVE_LATENCYTOP_SUPPORT
154 bool
155 depends on !SMP
156 default y
157
Russell Kingf16fb1e2007-04-28 09:59:37 +0100158config LOCKDEP_SUPPORT
159 bool
160 default y
161
Russell King7ad1bcb2006-08-27 12:07:02 +0100162config TRACE_IRQFLAGS_SUPPORT
163 bool
164 default y
165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166config RWSEM_GENERIC_SPINLOCK
167 bool
168 default y
169
170config RWSEM_XCHGADD_ALGORITHM
171 bool
172
David Howellsf0d1b0b2006-12-08 02:37:49 -0800173config ARCH_HAS_ILOG2_U32
174 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800175
176config ARCH_HAS_ILOG2_U64
177 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800178
Ben Dooks89c52ed2009-07-30 23:23:24 +0100179config ARCH_HAS_CPUFREQ
180 bool
181 help
182 Internal node to signify that the ARCH has CPUFREQ support
183 and that the relevant menu configurations are displayed for
184 it.
185
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100186config ARCH_HAS_BANDGAP
187 bool
188
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800189config GENERIC_HWEIGHT
190 bool
191 default y
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193config GENERIC_CALIBRATE_DELAY
194 bool
195 default y
196
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100197config ARCH_MAY_HAVE_PC_FDC
198 bool
199
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800200config ZONE_DMA
201 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800202
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800203config NEED_DMA_MAP_STATE
204 def_bool y
205
Rob Herring58af4a22012-03-20 14:33:01 -0500206config ARCH_HAS_DMA_SET_COHERENT_MASK
207 bool
208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209config GENERIC_ISA_DMA
210 bool
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212config FIQ
213 bool
214
Rob Herring13a50452012-02-07 09:28:22 -0600215config NEED_RET_TO_USER
216 bool
217
Al Viro034d2f52005-12-19 16:27:59 -0500218config ARCH_MTD_XIP
219 bool
220
Hyok S. Choic760fc12006-03-27 15:18:50 +0100221config VECTORS_BASE
222 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900223 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100224 default DRAM_BASE if REMAP_VECTORS_TO_RAM
225 default 0x00000000
226 help
Russell King19accfd2013-07-04 11:40:32 +0100227 The base address of exception vectors. This must be two pages
228 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100229
Russell Kingdc21af92011-01-04 19:09:43 +0000230config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100231 bool "Patch physical to virtual translations at runtime" if EMBEDDED
232 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100233 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000234 depends on !ARCH_REALVIEW || !SPARSEMEM
235 help
Russell King111e9a52011-05-12 10:02:42 +0100236 Patch phys-to-virt and virt-to-phys translation functions at
237 boot and module load time according to the position of the
238 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000239
Russell King111e9a52011-05-12 10:02:42 +0100240 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100241 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000242
Russell Kingc1beced2011-08-10 10:23:45 +0100243 Only disable this option if you know that you do not require
244 this feature (eg, building a kernel for a single machine) and
245 you need to shrink the kernel to the minimal size.
246
Rob Herring01464222012-08-28 13:06:41 -0500247config NEED_MACH_GPIO_H
248 bool
249 help
250 Select this when mach/gpio.h is required to provide special
251 definitions for this platform. The need for mach/gpio.h should
252 be avoided when possible.
253
Rob Herringc334bc12012-03-04 22:03:33 -0600254config NEED_MACH_IO_H
255 bool
256 help
257 Select this when mach/io.h is required to provide special
258 definitions for this platform. The need for mach/io.h should
259 be avoided when possible.
260
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400261config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400262 bool
Russell King111e9a52011-05-12 10:02:42 +0100263 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400264 Select this when mach/memory.h is required to provide special
265 definitions for this platform. The need for mach/memory.h should
266 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400267
268config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100269 hex "Physical address of main memory" if MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400270 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
Nicolas Pitre974c0722011-12-02 23:09:42 +0100271 default DRAM_BASE if !MMU
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400272 help
273 Please provide the physical address corresponding to the
274 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000275
Simon Glass87e040b2011-08-16 23:44:26 +0100276config GENERIC_BUG
277 def_bool y
278 depends on BUG
279
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280source "init/Kconfig"
281
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700282source "kernel/Kconfig.freezer"
283
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284menu "System Type"
285
Hyok S. Choi3c427972009-07-24 12:35:00 +0100286config MMU
287 bool "MMU-based Paged Memory Management Support"
288 default y
289 help
290 Select if you want MMU-based virtualised addressing space
291 support by paged memory management. If unsure, say 'Y'.
292
Russell Kingccf50e22010-03-15 19:03:06 +0000293#
294# The "ARM system type" choice list is ordered alphabetically by option
295# text. Please add new entries in the option alphabetic order.
296#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297choice
298 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100299 default ARCH_VERSATILE if !MMU
300 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301
Rob Herring387798b2012-09-06 13:41:12 -0500302config ARCH_MULTIPLATFORM
303 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100304 depends on MMU
Rob Herring387798b2012-09-06 13:41:12 -0500305 select ARM_PATCH_PHYS_VIRT
306 select AUTO_ZRELADDR
Dinh Nguyen66314222012-07-18 16:07:18 -0600307 select COMMON_CLK
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"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100314 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100315 select ARM_AMBA
Linus Walleija6131632012-06-11 17:33:12 +0200316 select COMMON_CLK
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200317 select COMMON_CLK_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100318 select GENERIC_CLOCKEVENTS
Linus Walleij9904f792011-12-09 10:29:23 +0100319 select HAVE_TCM
Russell Kingc5a0adb2010-01-16 20:16:10 +0000320 select ICST
Russell Kingb1b3f492012-10-06 17:12:25 +0100321 select MULTI_IRQ_HANDLER
322 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000323 select PLAT_VERSATILE
Linus Walleij695436e2012-02-26 10:46:48 +0100324 select SPARSE_IRQ
Linus Walleijd7057e12013-06-15 22:01:13 +0200325 select USE_OF
Linus Walleij2389d502012-10-31 22:04:31 +0100326 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100327 help
328 Support for ARM's Integrator platform.
329
330config ARCH_REALVIEW
331 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100332 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100333 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100334 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200335 select COMMON_CLK
336 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100337 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100338 select GPIO_PL061 if GPIOLIB
339 select ICST
340 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000341 select PLAT_VERSATILE
Russell King3cb5ee42011-01-18 20:13:20 +0000342 select PLAT_VERSATILE_CLCD
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100343 help
344 This enables support for ARM Ltd RealView boards.
345
346config ARCH_VERSATILE
347 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100348 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100349 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100350 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100351 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100352 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100353 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900354 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000355 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000356 select PLAT_VERSATILE
Russell King3414ba82011-01-18 20:12:10 +0000357 select PLAT_VERSATILE_CLCD
Russell Kingb1b3f492012-10-06 17:12:25 +0100358 select PLAT_VERSATILE_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100359 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100360 help
361 This enables support for ARM Ltd Versatile board.
362
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100363config ARCH_AT91
364 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100365 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100366 select CLKDEV_LOOKUP
Nicolas Ferree2615012011-11-22 22:26:09 +0100367 select IRQ_DOMAIN
Rob Herring01464222012-08-28 13:06:41 -0500368 select NEED_MACH_GPIO_H
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
Alexander Shiyan99f04c82012-11-17 17:57:14 +0400385 select MULTI_IRQ_HANDLER
Alexander Shiyan0d8be812012-11-17 17:57:13 +0400386 select SPARSE_IRQ
Russell King93e22562012-10-12 14:20:52 +0100387 help
388 Support for Cirrus Logic 711x/721x/731x based boards.
389
Russell King788c9702009-04-26 14:21:59 +0100390config ARCH_GEMINI
391 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100392 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200393 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100394 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200395 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100396 help
397 Support for the Cortina Systems Gemini family SoCs
398
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399config ARCH_EBSA110
400 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100401 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000402 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100403 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600404 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400405 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100406 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 help
408 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000409 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 Ethernet interface, two PCMCIA sockets, two serial ports and a
411 parallel port.
412
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000413config ARCH_EP93XX
414 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100415 select ARCH_HAS_HOLES_MEMORYMODEL
416 select ARCH_REQUIRE_GPIOLIB
417 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000418 select ARM_AMBA
419 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100420 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100421 select CPU_ARM920T
Arnd Bergmann5725aea2011-10-31 23:11:46 +0100422 select NEED_MACH_MEMORY_H
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000423 help
424 This enables support for the Cirrus EP93xx series of CPUs.
425
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426config ARCH_FOOTBRIDGE
427 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000428 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000430 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200431 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600432 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400433 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000434 help
435 Support for systems based on the DC21285 companion chip
436 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100438config ARCH_NETX
439 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100440 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100441 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000442 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100443 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000444 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100445 This enables support for systems based on the Hilscher NetX Soc
446
Russell King3b938be2007-05-12 11:25:44 +0100447config ARCH_IOP13XX
448 bool "IOP13xx-based"
449 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100450 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400451 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600452 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100453 select PCI
454 select PLAT_IOP
455 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100456 help
457 Support for Intel's IOP13XX (XScale) family of processors.
458
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100459config ARCH_IOP32X
460 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100461 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100462 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000463 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200464 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600465 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100466 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100467 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000468 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100469 Support for Intel's 80219 and IOP32X (XScale) family of
470 processors.
471
472config ARCH_IOP33X
473 bool "IOP33x-based"
474 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100475 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000476 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200477 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600478 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100479 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100480 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100481 help
482 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483
Russell King3b938be2007-05-12 11:25:44 +0100484config ARCH_IXP4XX
485 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100486 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500487 select ARCH_HAS_DMA_SET_COHERENT_MASK
Ben Dooksd10d2d42013-02-01 09:41:37 +0000488 select ARCH_SUPPORTS_BIG_ENDIAN
Russell Kingb1b3f492012-10-06 17:12:25 +0100489 select ARCH_REQUIRE_GPIOLIB
Russell King234b6ced2011-05-08 14:09:47 +0100490 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000491 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100492 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100493 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100494 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600495 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200496 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100497 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100498 help
Russell King3b938be2007-05-12 11:25:44 +0100499 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100500
Saeed Bisharaedabd382009-08-06 15:12:43 +0300501config ARCH_DOVE
502 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300503 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100504 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300505 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100506 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100507 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100508 select PINCTRL
509 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200510 select PLAT_ORION_LEGACY
Russell King0f81bd42012-09-09 20:34:13 +0100511 select USB_ARCH_HAS_EHCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300512 help
513 Support for the Marvell Dove SoC 88AP510
514
Saeed Bishara651c74c2008-06-22 22:45:06 +0200515config ARCH_KIRKWOOD
516 bool "Marvell Kirkwood"
Andrew Lunn0e2ee0c2013-01-27 11:07:23 +0100517 select ARCH_HAS_CPUFREQ
Erik Benadaa8865652009-05-28 17:08:55 -0700518 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100519 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200520 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100521 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100522 select PCI
Jason Gunthorpe1dc831b2012-11-21 00:19:06 -0700523 select PCI_QUIRKS
Andrew Lunnf9e75922012-11-17 17:00:44 +0100524 select PINCTRL
525 select PINCTRL_KIRKWOOD
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200526 select PLAT_ORION_LEGACY
Saeed Bishara651c74c2008-06-22 22:45:06 +0200527 help
528 Support for the following Marvell Kirkwood series SoCs:
529 88F6180, 88F6192 and 88F6281.
530
Russell King788c9702009-04-26 14:21:59 +0100531config ARCH_MV78XX0
532 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700533 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100534 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100535 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100536 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100537 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200538 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100539 help
540 Support for the following Marvell MV78xx0 series SoCs:
541 MV781x0, MV782x0.
542
543config ARCH_ORION5X
544 bool "Marvell Orion"
545 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700546 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100547 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100548 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100549 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100550 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200551 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100552 help
553 Support for the following Marvell Orion 5x series SoCs:
554 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
555 Orion-2 (5281), Orion-1-90 (6183).
556
557config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500558 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100559 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100560 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100561 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100562 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100563 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800564 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800565 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800566 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800567 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100568 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400569 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100570 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500571 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100572
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100573config ARCH_KS8695
574 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100575 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200576 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100577 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200578 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100579 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100580 help
581 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
582 System-on-Chip devices.
583
Russell King788c9702009-04-26 14:21:59 +0100584config ARCH_W90X900
585 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100586 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100587 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100588 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100589 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100590 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200591 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100592 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
593 At present, the w90x900 has been renamed nuc900, regarding
594 the ARM series product line, you can login the following
595 link address to know more.
596
597 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
598 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400599
Russell King93e22562012-10-12 14:20:52 +0100600config ARCH_LPC32XX
601 bool "NXP LPC32XX"
602 select ARCH_REQUIRE_GPIOLIB
603 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000604 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100605 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100606 select CPU_ARM926T
607 select GENERIC_CLOCKEVENTS
608 select HAVE_IDE
609 select HAVE_PWM
610 select USB_ARCH_HAS_OHCI
611 select USE_OF
612 help
613 Support for the NXP LPC32XX family of processors
614
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700616 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100617 depends on MMU
Ben Dooks89c52ed2009-07-30 23:23:24 +0100618 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100619 select ARCH_MTD_XIP
620 select ARCH_REQUIRE_GPIOLIB
621 select ARM_CPU_SUSPEND if PM
622 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100623 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100624 select CLKSRC_MMIO
Eric Miao981d0f32007-07-24 01:22:43 +0100625 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800626 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100627 select HAVE_IDE
628 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800629 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800630 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000631 help
eric miao2c8086a2007-09-11 19:13:17 -0700632 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633
Russell King788c9702009-04-26 14:21:59 +0100634config ARCH_MSM
635 bool "Qualcomm MSM"
Pavel Machek923a0812010-06-02 11:11:12 -0700636 select ARCH_REQUIRE_GPIOLIB
Stephen Boydc6025202013-07-24 13:54:30 -0700637 select CLKSRC_OF if OF
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700638 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100639 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800640 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800641 Support for Qualcomm MSM/QSD based systems. This runs on the
642 apps processor of the MSM/QSD and depends on a shared memory
643 interface to the modem processor which runs the baseband
644 stack and controls some vital subsystems
645 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800646
Magnus Dammc793c1b2010-02-05 11:14:49 +0000647config ARCH_SHMOBILE
Paul Mundt6d72ad32010-11-16 16:10:20 +0900648 bool "Renesas SH-Mobile / R-Mobile"
Magnus Damm69469992013-06-10 18:46:47 +0900649 select ARM_PATCH_PHYS_VIRT
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900650 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100651 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800652 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800653 select HAVE_ARM_TWD if SMP
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900654 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000655 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000656 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000657 select MULTI_IRQ_HANDLER
Russell Kingb1b3f492012-10-06 17:12:25 +0100658 select NO_IOPORT
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200659 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100660 select PM_GENERIC_DOMAINS if PM
661 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000662 help
Paul Mundt6d72ad32010-11-16 16:10:20 +0900663 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000664
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665config ARCH_RPC
666 bool "RiscPC"
667 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100668 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100669 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000670 select ARCH_USES_GETTIMEOFFSET
Russell Kingb1b3f492012-10-06 17:12:25 +0100671 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200672 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100673 select HAVE_PATA_PLATFORM
674 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600675 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400676 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100677 select NO_IOPORT
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100678 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 help
680 On the Acorn Risc-PC, Linux can support the internal IDE disk and
681 CD-ROM interface, serial and parallel port, and the floppy drive.
682
683config ARCH_SA1100
684 bool "SA1100-based"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100685 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700687 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100688 select ARCH_SPARSEMEM_ENABLE
689 select CLKDEV_LOOKUP
690 select CLKSRC_MMIO
691 select CPU_FREQ
692 select CPU_SA1100
693 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200694 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100695 select ISA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400696 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100697 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000698 help
699 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900701config ARCH_S3C24XX
702 bool "Samsung S3C24XX SoCs"
Ben Dooks9d56c022009-07-30 23:23:25 +0100703 select ARCH_HAS_CPUFREQ
Kukjin Kim53650432013-04-04 09:04:30 +0900704 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100705 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200706 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800707 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900708 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900709 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900710 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100711 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900712 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600713 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900714 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900716 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
717 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
718 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
719 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900720
Ben Dooksa08ab632008-10-21 14:06:39 +0100721config ARCH_S3C64XX
722 bool "Samsung S3C64XX"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100723 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900724 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100725 select ARM_VIC
726 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200727 select CLKSRC_SAMSUNG_PWM
Tomasz Figab69f4602013-08-26 02:00:38 +0900728 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100729 select CPU_V6
Romain Naour04a49b72013-01-09 18:47:04 -0800730 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900731 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900732 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900733 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100734 select HAVE_TCM
Russell Kingb1b3f492012-10-06 17:12:25 +0100735 select NO_IOPORT
736 select PLAT_SAMSUNG
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900737 select PM_GENERIC_DOMAINS
Russell Kingb1b3f492012-10-06 17:12:25 +0100738 select S3C_DEV_NAND
739 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900740 select SAMSUNG_ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100741 select SAMSUNG_GPIOLIB_4BIT
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900742 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900743 select SAMSUNG_WDT_RESET
Russell Kingb1b3f492012-10-06 17:12:25 +0100744 select USB_ARCH_HAS_OHCI
Ben Dooksa08ab632008-10-21 14:06:39 +0100745 help
746 Samsung S3C64XX series based systems
747
Kukjin Kim49b7a492010-09-07 15:47:18 +0900748config ARCH_S5P64X0
749 bool "Samsung S5P6440 S5P6450"
Thomas Abrahamd8b22d22011-06-14 19:12:27 +0900750 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200751 select CLKSRC_SAMSUNG_PWM
Russell Kingb1b3f492012-10-06 17:12:25 +0100752 select CPU_V6
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900753 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900754 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900755 select HAVE_S3C2410_I2C if I2C
Russell Kingb1b3f492012-10-06 17:12:25 +0100756 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim754961a2010-11-13 16:11:46 +0900757 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500758 select NEED_MACH_GPIO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900759 select SAMSUNG_ATAGS
Russell King171b3f02013-09-12 21:24:42 +0100760 select SAMSUNG_WDT_RESET
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900761 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900762 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
763 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900764
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200765config ARCH_S5PC100
766 bool "Samsung S5PC100"
Kukjin Kim53650432013-04-04 09:04:30 +0900767 select ARCH_REQUIRE_GPIOLIB
Thomas Abraham29e8eb02011-06-14 19:12:27 +0900768 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200769 select CLKSRC_SAMSUNG_PWM
Byungho Min5a7652f2009-06-23 21:39:42 +0900770 select CPU_V7
Romain Naour6a5a2e32013-01-09 18:47:04 -0800771 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900772 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900773 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900774 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100775 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500776 select NEED_MACH_GPIO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900777 select SAMSUNG_ATAGS
Russell King171b3f02013-09-12 21:24:42 +0100778 select SAMSUNG_WDT_RESET
Byungho Min5a7652f2009-06-23 21:39:42 +0900779 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200780 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900781
Kukjin Kim170f4e42010-02-24 16:40:44 +0900782config ARCH_S5PV210
783 bool "Samsung S5PV210/S5PC110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100784 select ARCH_HAS_CPUFREQ
Kamil Debski0f75a962011-07-21 16:42:30 +0900785 select ARCH_HAS_HOLES_MEMORYMODEL
Russell Kingb1b3f492012-10-06 17:12:25 +0100786 select ARCH_SPARSEMEM_ENABLE
Thomas Abrahamb2a9dd42011-06-14 19:12:27 +0900787 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200788 select CLKSRC_SAMSUNG_PWM
Russell Kingb1b3f492012-10-06 17:12:25 +0100789 select CPU_V7
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900790 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900791 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900792 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900793 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100794 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500795 select NEED_MACH_GPIO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400796 select NEED_MACH_MEMORY_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900797 select SAMSUNG_ATAGS
Kukjin Kim170f4e42010-02-24 16:40:44 +0900798 help
799 Samsung S5PV210/S5PC110 series based systems
800
Kukjin Kim83014572011-11-06 13:54:56 +0900801config ARCH_EXYNOS
Russell King93e22562012-10-12 14:20:52 +0100802 bool "Samsung EXYNOS"
Russell Kingb1b3f492012-10-06 17:12:25 +0100803 select ARCH_HAS_CPUFREQ
Kamil Debski0f75a962011-07-21 16:42:30 +0900804 select ARCH_HAS_HOLES_MEMORYMODEL
Tomasz Figae245f962013-06-19 01:26:42 +0900805 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100806 select ARCH_SPARSEMEM_ENABLE
Tomasz Figae245f962013-06-19 01:26:42 +0900807 select ARM_GIC
Olof Johansson340fcb52013-04-26 11:47:45 -0700808 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100809 select CPU_V7
810 select GENERIC_CLOCKEVENTS
Kukjin Kim20676c12010-11-13 16:08:32 +0900811 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900812 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100813 select HAVE_S3C_RTC if RTC_CLASS
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400814 select NEED_MACH_MEMORY_H
Tomasz Figa6e726ea2013-06-15 09:28:55 +0900815 select SPARSE_IRQ
Tomasz Figaf8b1ac02013-06-15 09:01:11 +0900816 select USE_OF
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900817 help
Kukjin Kim83014572011-11-06 13:54:56 +0900818 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900819
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100820config ARCH_DAVINCI
821 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100822 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700823 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100824 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700825 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100826 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100827 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100828 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500829 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530830 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100831 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100832 help
833 Support for TI's DaVinci platform.
834
Tony Lindgrena0694862013-01-11 11:24:20 -0800835config ARCH_OMAP1
836 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600837 depends on MMU
Ben Dooks89c52ed2009-07-30 23:23:24 +0100838 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100839 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800840 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100841 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200842 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100843 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100844 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800845 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800846 select HAVE_IDE
847 select IRQ_DOMAIN
848 select NEED_MACH_IO_H if PCCARD
849 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100850 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800851 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800852
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853endchoice
854
Rob Herring387798b2012-09-06 13:41:12 -0500855menu "Multiple platform selection"
856 depends on ARCH_MULTIPLATFORM
857
858comment "CPU Core family selection"
859
Rob Herring387798b2012-09-06 13:41:12 -0500860config ARCH_MULTI_V4T
861 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500862 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100863 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200864 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
865 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
866 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500867
868config ARCH_MULTI_V5
869 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500870 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100871 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200872 select CPU_ARM926T if (!CPU_ARM946E || CPU_ARM1020 || \
873 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
874 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500875
876config ARCH_MULTI_V4_V5
877 bool
878
879config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800880 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500881 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100882 select CPU_V6
Rob Herring387798b2012-09-06 13:41:12 -0500883
884config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800885 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500886 default y
887 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100888 select CPU_V7
Rob Herring387798b2012-09-06 13:41:12 -0500889
890config ARCH_MULTI_V6_V7
891 bool
892
893config ARCH_MULTI_CPU_AUTO
894 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
895 select ARCH_MULTI_V5
896
897endmenu
898
Russell Kingccf50e22010-03-15 19:03:06 +0000899#
900# This is sorted alphabetically by mach-* pathname. However, plat-*
901# Kconfigs may be included either alphabetically (according to the
902# plat- suffix) or along side the corresponding mach-* source.
903#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200904source "arch/arm/mach-mvebu/Kconfig"
905
Russell King95b8f202010-01-14 11:43:54 +0000906source "arch/arm/mach-at91/Kconfig"
907
Christian Daudt8ac49e02012-11-19 09:46:10 -0800908source "arch/arm/mach-bcm/Kconfig"
909
Stephen Warrenf1ac9222013-03-11 22:40:18 -0600910source "arch/arm/mach-bcm2835/Kconfig"
911
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912source "arch/arm/mach-clps711x/Kconfig"
913
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300914source "arch/arm/mach-cns3xxx/Kconfig"
915
Russell King95b8f202010-01-14 11:43:54 +0000916source "arch/arm/mach-davinci/Kconfig"
917
918source "arch/arm/mach-dove/Kconfig"
919
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000920source "arch/arm/mach-ep93xx/Kconfig"
921
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922source "arch/arm/mach-footbridge/Kconfig"
923
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200924source "arch/arm/mach-gemini/Kconfig"
925
Rob Herring387798b2012-09-06 13:41:12 -0500926source "arch/arm/mach-highbank/Kconfig"
927
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928source "arch/arm/mach-integrator/Kconfig"
929
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100930source "arch/arm/mach-iop32x/Kconfig"
931
932source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933
Dan Williams285f5fa2006-12-07 02:59:39 +0100934source "arch/arm/mach-iop13xx/Kconfig"
935
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936source "arch/arm/mach-ixp4xx/Kconfig"
937
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400938source "arch/arm/mach-keystone/Kconfig"
939
Russell King95b8f202010-01-14 11:43:54 +0000940source "arch/arm/mach-kirkwood/Kconfig"
941
942source "arch/arm/mach-ks8695/Kconfig"
943
Russell King95b8f202010-01-14 11:43:54 +0000944source "arch/arm/mach-msm/Kconfig"
945
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200946source "arch/arm/mach-mv78xx0/Kconfig"
947
Shawn Guo3995eb82012-09-13 19:48:07 +0800948source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800950source "arch/arm/mach-mxs/Kconfig"
951
Russell King95b8f202010-01-14 11:43:54 +0000952source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800953
Russell King95b8f202010-01-14 11:43:54 +0000954source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000955
Daniel Tang9851ca52013-06-11 18:40:17 +1000956source "arch/arm/mach-nspire/Kconfig"
957
Tony Lindgrend48af152005-07-10 19:58:17 +0100958source "arch/arm/plat-omap/Kconfig"
959
960source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961
Tony Lindgren1dbae812005-11-10 14:26:51 +0000962source "arch/arm/mach-omap2/Kconfig"
963
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400964source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400965
Rob Herring387798b2012-09-06 13:41:12 -0500966source "arch/arm/mach-picoxcell/Kconfig"
967
Russell King95b8f202010-01-14 11:43:54 +0000968source "arch/arm/mach-pxa/Kconfig"
969source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970
Russell King95b8f202010-01-14 11:43:54 +0000971source "arch/arm/mach-mmp/Kconfig"
972
973source "arch/arm/mach-realview/Kconfig"
974
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200975source "arch/arm/mach-rockchip/Kconfig"
976
Russell King95b8f202010-01-14 11:43:54 +0000977source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300978
Ben Dookscf383672009-11-10 00:14:58 +0000979source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100980
Rob Herring387798b2012-09-06 13:41:12 -0500981source "arch/arm/mach-socfpga/Kconfig"
982
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100983source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100984
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100985source "arch/arm/mach-sti/Kconfig"
986
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900987source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988
Ben Dooks431107e2010-01-26 10:11:04 +0900989source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100990
Kukjin Kim49b7a492010-09-07 15:47:18 +0900991source "arch/arm/mach-s5p64x0/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900992
Byungho Min5a7652f2009-06-23 21:39:42 +0900993source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +0900994
Kukjin Kim170f4e42010-02-24 16:40:44 +0900995source "arch/arm/mach-s5pv210/Kconfig"
996
Kukjin Kim83014572011-11-06 13:54:56 +0900997source "arch/arm/mach-exynos/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900998
Russell King882d01f2010-03-02 23:40:15 +0000999source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000
Maxime Ripard3b526342012-11-08 12:40:16 +01001001source "arch/arm/mach-sunxi/Kconfig"
1002
Barry Song156a0992012-08-23 13:41:58 +08001003source "arch/arm/mach-prima2/Kconfig"
1004
Erik Gillingc5f80062010-01-21 16:53:02 -08001005source "arch/arm/mach-tegra/Kconfig"
1006
Russell King95b8f202010-01-14 11:43:54 +00001007source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008
Russell King95b8f202010-01-14 11:43:54 +00001009source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010
1011source "arch/arm/mach-versatile/Kconfig"
1012
Russell Kingceade892010-02-11 21:44:53 +00001013source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +00001014source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +00001015
Marc Zyngier2a0ba732012-10-05 13:47:39 +01001016source "arch/arm/mach-virt/Kconfig"
1017
Tony Prisk6f35f9a2012-10-11 20:13:09 +13001018source "arch/arm/mach-vt8500/Kconfig"
1019
wanzongshun7ec80dd2008-12-03 03:55:38 +01001020source "arch/arm/mach-w90x900/Kconfig"
1021
Josh Cartwright9a45eb62012-11-19 11:38:29 -06001022source "arch/arm/mach-zynq/Kconfig"
1023
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024# Definitions to make life easier
1025config ARCH_ACORN
1026 bool
1027
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001028config PLAT_IOP
1029 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -07001030 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001031
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001032config PLAT_ORION
1033 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001034 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +01001035 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001036 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +02001037 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001038
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001039config PLAT_ORION_LEGACY
1040 bool
1041 select PLAT_ORION
1042
Eric Miaobd5ce432009-01-20 12:06:01 +08001043config PLAT_PXA
1044 bool
1045
Russell Kingf4b8b312010-01-14 12:48:06 +00001046config PLAT_VERSATILE
1047 bool
1048
Russell Kinge3887712010-01-14 13:30:16 +00001049config ARM_TIMER_SP804
1050 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001051 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001052 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001053
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054source arch/arm/mm/Kconfig
1055
Russell King958cab02011-12-11 10:04:00 +00001056config ARM_NR_BANKS
1057 int
1058 default 16 if ARCH_EP93XX
1059 default 8
1060
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001061config IWMMXT
Russell King698613b2013-04-03 16:33:26 +01001062 bool "Enable iWMMXt support" if !CPU_PJ4
Haojian Zhuangef6c8442010-11-24 11:54:25 +08001063 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
Russell King698613b2013-04-03 16:33:26 +01001064 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001065 help
1066 Enable support for iWMMXt context switching at run time if
1067 running on a CPU that supports it.
1068
eric miao52108642010-12-13 09:42:34 +01001069config MULTI_IRQ_HANDLER
1070 bool
1071 help
1072 Allow each machine to specify it's own IRQ handler at run time.
1073
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001074if !MMU
1075source "arch/arm/Kconfig-nommu"
1076endif
1077
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001078config PJ4B_ERRATA_4742
1079 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1080 depends on CPU_PJ4B && MACH_ARMADA_370
1081 default y
1082 help
1083 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1084 Event (WFE) IDLE states, a specific timing sensitivity exists between
1085 the retiring WFI/WFE instructions and the newly issued subsequent
1086 instructions. This sensitivity can result in a CPU hang scenario.
1087 Workaround:
1088 The software must insert either a Data Synchronization Barrier (DSB)
1089 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1090 instruction
1091
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001092config ARM_ERRATA_326103
1093 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1094 depends on CPU_V6
1095 help
1096 Executing a SWP instruction to read-only memory does not set bit 11
1097 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1098 treat the access as a read, preventing a COW from occurring and
1099 causing the faulting task to livelock.
1100
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001101config ARM_ERRATA_411920
1102 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001103 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001104 help
1105 Invalidation of the Instruction Cache operation can
1106 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1107 It does not affect the MPCore. This option enables the ARM Ltd.
1108 recommended workaround.
1109
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001110config ARM_ERRATA_430973
1111 bool "ARM errata: Stale prediction on replaced interworking branch"
1112 depends on CPU_V7
1113 help
1114 This option enables the workaround for the 430973 Cortex-A8
1115 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1116 interworking branch is replaced with another code sequence at the
1117 same virtual address, whether due to self-modifying code or virtual
1118 to physical address re-mapping, Cortex-A8 does not recover from the
1119 stale interworking branch prediction. This results in Cortex-A8
1120 executing the new code sequence in the incorrect ARM or Thumb state.
1121 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1122 and also flushes the branch target cache at every context switch.
1123 Note that setting specific bits in the ACTLR register may not be
1124 available in non-secure mode.
1125
Catalin Marinas855c5512009-04-30 17:06:15 +01001126config ARM_ERRATA_458693
1127 bool "ARM errata: Processor deadlock when a false hazard is created"
1128 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001129 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001130 help
1131 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1132 erratum. For very specific sequences of memory operations, it is
1133 possible for a hazard condition intended for a cache line to instead
1134 be incorrectly associated with a different cache line. This false
1135 hazard might then cause a processor deadlock. The workaround enables
1136 the L1 caching of the NEON accesses and disables the PLD instruction
1137 in the ACTLR register. Note that setting specific bits in the ACTLR
1138 register may not be available in non-secure mode.
1139
Catalin Marinas0516e462009-04-30 17:06:20 +01001140config ARM_ERRATA_460075
1141 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1142 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001143 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001144 help
1145 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1146 erratum. Any asynchronous access to the L2 cache may encounter a
1147 situation in which recent store transactions to the L2 cache are lost
1148 and overwritten with stale memory contents from external memory. The
1149 workaround disables the write-allocate mode for the L2 cache via the
1150 ACTLR register. Note that setting specific bits in the ACTLR register
1151 may not be available in non-secure mode.
1152
Will Deacon9f050272010-09-14 09:51:43 +01001153config ARM_ERRATA_742230
1154 bool "ARM errata: DMB operation may be faulty"
1155 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001156 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001157 help
1158 This option enables the workaround for the 742230 Cortex-A9
1159 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1160 between two write operations may not ensure the correct visibility
1161 ordering of the two writes. This workaround sets a specific bit in
1162 the diagnostic register of the Cortex-A9 which causes the DMB
1163 instruction to behave as a DSB, ensuring the correct behaviour of
1164 the two writes.
1165
Will Deacona672e992010-09-14 09:53:02 +01001166config ARM_ERRATA_742231
1167 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1168 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001169 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001170 help
1171 This option enables the workaround for the 742231 Cortex-A9
1172 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1173 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1174 accessing some data located in the same cache line, may get corrupted
1175 data due to bad handling of the address hazard when the line gets
1176 replaced from one of the CPUs at the same time as another CPU is
1177 accessing it. This workaround sets specific bits in the diagnostic
1178 register of the Cortex-A9 which reduces the linefill issuing
1179 capabilities of the processor.
1180
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001181config PL310_ERRATA_588369
Will Deaconfa0ce402011-11-14 17:24:57 +01001182 bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001183 depends on CACHE_L2X0
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001184 help
1185 The PL310 L2 cache controller implements three types of Clean &
1186 Invalidate maintenance operations: by Physical Address
1187 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1188 They are architecturally defined to behave as the execution of a
1189 clean operation followed immediately by an invalidate operation,
1190 both performing to the same memory location. This functionality
1191 is not correctly implemented in PL310 as clean lines are not
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001192 invalidated as a result of these operations.
Will Deaconcdf357f2010-08-05 11:20:51 +01001193
Jon Medhurst69155792013-06-07 10:35:35 +01001194config ARM_ERRATA_643719
1195 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1196 depends on CPU_V7 && SMP
1197 help
1198 This option enables the workaround for the 643719 Cortex-A9 (prior to
1199 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1200 register returns zero when it should return one. The workaround
1201 corrects this value, ensuring cache maintenance operations which use
1202 it behave as intended and avoiding data corruption.
1203
Will Deaconcdf357f2010-08-05 11:20:51 +01001204config ARM_ERRATA_720789
1205 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001206 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001207 help
1208 This option enables the workaround for the 720789 Cortex-A9 (prior to
1209 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1210 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1211 As a consequence of this erratum, some TLB entries which should be
1212 invalidated are not, resulting in an incoherency in the system page
1213 tables. The workaround changes the TLB flushing routines to invalidate
1214 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001215
Russell King1f0090a2011-03-16 23:35:25 +00001216config PL310_ERRATA_727915
Will Deaconfa0ce402011-11-14 17:24:57 +01001217 bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
Russell King1f0090a2011-03-16 23:35:25 +00001218 depends on CACHE_L2X0
1219 help
1220 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1221 operation (offset 0x7FC). This operation runs in background so that
1222 PL310 can handle normal accesses while it is in progress. Under very
1223 rare circumstances, due to this erratum, write data can be lost when
1224 PL310 treats a cacheable write transaction during a Clean &
1225 Invalidate by Way operation.
1226
Will Deacon475d92f2010-09-28 14:02:02 +01001227config ARM_ERRATA_743622
1228 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1229 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001230 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001231 help
1232 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001233 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001234 optimisation in the Cortex-A9 Store Buffer may lead to data
1235 corruption. This workaround sets a specific bit in the diagnostic
1236 register of the Cortex-A9 which disables the Store Buffer
1237 optimisation, preventing the defect from occurring. This has no
1238 visible impact on the overall performance or power consumption of the
1239 processor.
1240
Will Deacon9a27c272011-02-18 16:36:35 +01001241config ARM_ERRATA_751472
1242 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001243 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001244 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001245 help
1246 This option enables the workaround for the 751472 Cortex-A9 (prior
1247 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1248 completion of a following broadcasted operation if the second
1249 operation is received by a CPU before the ICIALLUIS has completed,
1250 potentially leading to corrupted entries in the cache or TLB.
1251
Will Deaconfa0ce402011-11-14 17:24:57 +01001252config PL310_ERRATA_753970
1253 bool "PL310 errata: cache sync operation may be faulty"
Srinidhi Kasagar885028e2011-02-17 07:03:51 +01001254 depends on CACHE_PL310
1255 help
1256 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1257
1258 Under some condition the effect of cache sync operation on
1259 the store buffer still remains when the operation completes.
1260 This means that the store buffer is always asked to drain and
1261 this prevents it from merging any further writes. The workaround
1262 is to replace the normal offset of cache sync operation (0x730)
1263 by another offset targeting an unmapped PL310 register 0x740.
1264 This has the same effect as the cache sync operation: store buffer
1265 drain and waiting for all buffers empty.
1266
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001267config ARM_ERRATA_754322
1268 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1269 depends on CPU_V7
1270 help
1271 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1272 r3p*) erratum. A speculative memory access may cause a page table walk
1273 which starts prior to an ASID switch but completes afterwards. This
1274 can populate the micro-TLB with a stale entry which may be hit with
1275 the new ASID. This workaround places two dsb instructions in the mm
1276 switching code so that no page table walks can cross the ASID switch.
1277
Will Deacon5dab26af2011-03-04 12:38:54 +01001278config ARM_ERRATA_754327
1279 bool "ARM errata: no automatic Store Buffer drain"
1280 depends on CPU_V7 && SMP
1281 help
1282 This option enables the workaround for the 754327 Cortex-A9 (prior to
1283 r2p0) erratum. The Store Buffer does not have any automatic draining
1284 mechanism and therefore a livelock may occur if an external agent
1285 continuously polls a memory location waiting to observe an update.
1286 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1287 written polling loops from denying visibility of updates to memory.
1288
Catalin Marinas145e10e2011-08-15 11:04:41 +01001289config ARM_ERRATA_364296
1290 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001291 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001292 help
1293 This options enables the workaround for the 364296 ARM1136
1294 r0p2 erratum (possible cache data corruption with
1295 hit-under-miss enabled). It sets the undocumented bit 31 in
1296 the auxiliary control register and the FI bit in the control
1297 register, thus disabling hit-under-miss without putting the
1298 processor into full low interrupt latency mode. ARM11MPCore
1299 is not affected.
1300
Will Deaconf630c1b2011-09-15 11:45:15 +01001301config ARM_ERRATA_764369
1302 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1303 depends on CPU_V7 && SMP
1304 help
1305 This option enables the workaround for erratum 764369
1306 affecting Cortex-A9 MPCore with two or more processors (all
1307 current revisions). Under certain timing circumstances, a data
1308 cache line maintenance operation by MVA targeting an Inner
1309 Shareable memory region may fail to proceed up to either the
1310 Point of Coherency or to the Point of Unification of the
1311 system. This workaround adds a DSB instruction before the
1312 relevant cache maintenance functions and sets a specific bit
1313 in the diagnostic control register of the SCU.
1314
Will Deacon11ed0ba2011-11-14 17:24:58 +01001315config PL310_ERRATA_769419
1316 bool "PL310 errata: no automatic Store Buffer drain"
1317 depends on CACHE_L2X0
1318 help
1319 On revisions of the PL310 prior to r3p2, the Store Buffer does
1320 not automatically drain. This can cause normal, non-cacheable
1321 writes to be retained when the memory system is idle, leading
1322 to suboptimal I/O performance for drivers using coherent DMA.
1323 This option adds a write barrier to the cpu_idle loop so that,
1324 on systems with an outer cache, the store buffer is drained
1325 explicitly.
1326
Simon Horman7253b852012-09-28 02:12:45 +01001327config ARM_ERRATA_775420
1328 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1329 depends on CPU_V7
1330 help
1331 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1332 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1333 operation aborts with MMU exception, it might cause the processor
1334 to deadlock. This workaround puts DSB before executing ISB if
1335 an abort may occur on cache maintenance.
1336
Catalin Marinas93dc6882013-03-26 23:35:04 +01001337config ARM_ERRATA_798181
1338 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1339 depends on CPU_V7 && SMP
1340 help
1341 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1342 adequately shooting down all use of the old entries. This
1343 option enables the Linux kernel workaround for this erratum
1344 which sends an IPI to the CPUs that are running the same ASID
1345 as the one being invalidated.
1346
Will Deacon84b65042013-08-20 17:29:55 +01001347config ARM_ERRATA_773022
1348 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1349 depends on CPU_V7
1350 help
1351 This option enables the workaround for the 773022 Cortex-A15
1352 (up to r0p4) erratum. In certain rare sequences of code, the
1353 loop buffer may deliver incorrect instructions. This
1354 workaround disables the loop buffer to avoid the erratum.
1355
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356endmenu
1357
1358source "arch/arm/common/Kconfig"
1359
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360menu "Bus support"
1361
1362config ARM_AMBA
1363 bool
1364
1365config ISA
1366 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367 help
1368 Find out whether you have ISA slots on your motherboard. ISA is the
1369 name of a bus system, i.e. the way the CPU talks to the other stuff
1370 inside your box. Other bus systems are PCI, EISA, MicroChannel
1371 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1372 newer boards don't support it. If you have ISA, say Y, otherwise N.
1373
Russell King065909b2006-01-04 15:44:16 +00001374# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375config ISA_DMA
1376 bool
Russell King065909b2006-01-04 15:44:16 +00001377 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378
Russell King065909b2006-01-04 15:44:16 +00001379# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001380config ISA_DMA_API
1381 bool
Al Viro5cae8412005-05-04 05:39:22 +01001382
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001384 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385 help
1386 Find out whether you have a PCI motherboard. PCI is the name of a
1387 bus system, i.e. the way the CPU talks to the other stuff inside
1388 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1389 VESA. If you have PCI, say Y, otherwise N.
1390
Anton Vorontsov52882172010-04-19 13:20:49 +01001391config PCI_DOMAINS
1392 bool
1393 depends on PCI
1394
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001395config PCI_NANOENGINE
1396 bool "BSE nanoEngine PCI support"
1397 depends on SA1100_NANOENGINE
1398 help
1399 Enable PCI on the BSE nanoEngine board.
1400
Matthew Wilcox36e23592007-07-10 10:54:40 -06001401config PCI_SYSCALL
1402 def_bool PCI
1403
Mike Rapoporta0113a92007-11-25 08:55:34 +01001404config PCI_HOST_ITE8152
1405 bool
1406 depends on PCI && MACH_ARMCORE
1407 default y
1408 select DMABOUNCE
1409
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001411source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412
1413source "drivers/pcmcia/Kconfig"
1414
1415endmenu
1416
1417menu "Kernel Features"
1418
Dave Martin3b556582011-12-07 15:38:04 +00001419config HAVE_SMP
1420 bool
1421 help
1422 This option should be selected by machines which have an SMP-
1423 capable CPU.
1424
1425 The only effect of this option is to make the SMP-related
1426 options available to the user for configuration.
1427
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001429 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001430 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001431 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001432 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001433 depends on MMU || ARM_MPU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434 help
1435 This enables support for systems with more than one CPU. If you have
1436 a system with only one CPU, like most personal computers, say N. If
1437 you have a system with more than one CPU, say Y.
1438
1439 If you say N here, the kernel will run on single and multiprocessor
1440 machines, but will use only one CPU of a multiprocessor machine. If
1441 you say Y here, the kernel will run on many, but not all, single
1442 processor machines. On a single processor machine, the kernel will
1443 run faster if you say N here.
1444
Paul Bolle395cf962011-08-15 02:02:26 +02001445 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001446 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001447 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448
1449 If you don't know what to do here, say N.
1450
Russell Kingf00ec482010-09-04 10:47:48 +01001451config SMP_ON_UP
1452 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001453 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001454 default y
1455 help
1456 SMP kernels contain instructions which fail on non-SMP processors.
1457 Enabling this option allows the kernel to modify itself to make
1458 these instructions safe. Disabling it allows about 1K of space
1459 savings.
1460
1461 If you don't know what to do here, say Y.
1462
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001463config ARM_CPU_TOPOLOGY
1464 bool "Support cpu topology definition"
1465 depends on SMP && CPU_V7
1466 default y
1467 help
1468 Support ARM cpu topology definition. The MPIDR register defines
1469 affinity between processors which is then used to describe the cpu
1470 topology of an ARM System.
1471
1472config SCHED_MC
1473 bool "Multi-core scheduler support"
1474 depends on ARM_CPU_TOPOLOGY
1475 help
1476 Multi-core scheduler support improves the CPU scheduler's decision
1477 making when dealing with multi-core CPU chips at a cost of slightly
1478 increased overhead in some places. If unsure say N here.
1479
1480config SCHED_SMT
1481 bool "SMT scheduler support"
1482 depends on ARM_CPU_TOPOLOGY
1483 help
1484 Improves the CPU scheduler's decision making when dealing with
1485 MultiThreading at a cost of slightly increased overhead in some
1486 places. If unsure say N here.
1487
Russell Kinga8cbcd92009-05-16 11:51:14 +01001488config HAVE_ARM_SCU
1489 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001490 help
1491 This option enables support for the ARM system coherency unit
1492
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001493config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001494 bool "Architected timer support"
1495 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001496 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001497 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001498 help
1499 This option enables support for the ARM architected timer
1500
Russell Kingf32f4ce2009-05-16 12:14:21 +01001501config HAVE_ARM_TWD
1502 bool
1503 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001504 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001505 help
1506 This options enables support for the ARM timer and watchdog unit
1507
Nicolas Pitree8db2882012-04-12 02:45:22 -04001508config MCPM
1509 bool "Multi-Cluster Power Management"
1510 depends on CPU_V7 && SMP
1511 help
1512 This option provides the common power management infrastructure
1513 for (multi-)cluster based systems, such as big.LITTLE based
1514 systems.
1515
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001516config BIG_LITTLE
1517 bool "big.LITTLE support (Experimental)"
1518 depends on CPU_V7 && SMP
1519 select MCPM
1520 help
1521 This option enables support selections for the big.LITTLE
1522 system architecture.
1523
1524config BL_SWITCHER
1525 bool "big.LITTLE switcher support"
1526 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
1527 select CPU_PM
1528 select ARM_CPU_SUSPEND
1529 help
1530 The big.LITTLE "switcher" provides the core functionality to
1531 transparently handle transition between a cluster of A15's
1532 and a cluster of A7's in a big.LITTLE system.
1533
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001534config BL_SWITCHER_DUMMY_IF
1535 tristate "Simple big.LITTLE switcher user interface"
1536 depends on BL_SWITCHER && DEBUG_KERNEL
1537 help
1538 This is a simple and dummy char dev interface to control
1539 the big.LITTLE switcher core code. It is meant for
1540 debugging purposes only.
1541
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001542choice
1543 prompt "Memory split"
1544 default VMSPLIT_3G
1545 help
1546 Select the desired split between kernel and user memory.
1547
1548 If you are not absolutely sure what you are doing, leave this
1549 option alone!
1550
1551 config VMSPLIT_3G
1552 bool "3G/1G user/kernel split"
1553 config VMSPLIT_2G
1554 bool "2G/2G user/kernel split"
1555 config VMSPLIT_1G
1556 bool "1G/3G user/kernel split"
1557endchoice
1558
1559config PAGE_OFFSET
1560 hex
1561 default 0x40000000 if VMSPLIT_1G
1562 default 0x80000000 if VMSPLIT_2G
1563 default 0xC0000000
1564
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565config NR_CPUS
1566 int "Maximum number of CPUs (2-32)"
1567 range 2 32
1568 depends on SMP
1569 default "4"
1570
Russell Kinga054a812005-11-02 22:24:33 +00001571config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001572 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001573 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001574 help
1575 Say Y here to experiment with turning CPUs off and on. CPUs
1576 can be controlled through /sys/devices/system/cpu.
1577
Will Deacon2bdd4242012-12-12 19:20:52 +00001578config ARM_PSCI
1579 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1580 depends on CPU_V7
1581 help
1582 Say Y here if you want Linux to communicate with system firmware
1583 implementing the PSCI specification for CPU-centric power
1584 management operations described in ARM document number ARM DEN
1585 0022A ("Power State Coordination Interface System Software on
1586 ARM processors").
1587
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001588# The GPIO number here must be sorted by descending number. In case of
1589# a multiplatform kernel, we just want the highest value required by the
1590# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001591config ARCH_NR_GPIO
1592 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001593 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Linus Walleij41c35482013-12-06 12:46:27 +01001594 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX
Olof Johansson06b851e2013-04-02 18:33:58 -07001595 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001596 default 352 if ARCH_VT8500
1597 default 288 if ARCH_SUNXI
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001598 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001599 default 0
1600 help
1601 Maximum number of GPIOs in the system.
1602
1603 If unsure, leave the default value.
1604
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001605source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001606
Russell Kingc9218b12013-04-27 23:31:10 +01001607config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001608 int
Kukjin Kimb130d5c2012-02-03 14:29:23 +09001609 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001610 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001611 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001612 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell King47d84682013-09-10 23:47:55 +01001613 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001614
1615choice
Russell King47d84682013-09-10 23:47:55 +01001616 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001617 prompt "Timer frequency"
1618
1619config HZ_100
1620 bool "100 Hz"
1621
1622config HZ_200
1623 bool "200 Hz"
1624
1625config HZ_250
1626 bool "250 Hz"
1627
1628config HZ_300
1629 bool "300 Hz"
1630
1631config HZ_500
1632 bool "500 Hz"
1633
1634config HZ_1000
1635 bool "1000 Hz"
1636
1637endchoice
1638
1639config HZ
1640 int
Russell King47d84682013-09-10 23:47:55 +01001641 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001642 default 100 if HZ_100
1643 default 200 if HZ_200
1644 default 250 if HZ_250
1645 default 300 if HZ_300
1646 default 500 if HZ_500
1647 default 1000
1648
1649config SCHED_HRTICK
1650 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001651
Russell Kingb28748f2013-02-17 14:40:33 +00001652config SCHED_HRTICK
1653 def_bool HIGH_RES_TIMERS
1654
Catalin Marinas16c79652009-07-24 12:33:02 +01001655config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001656 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001657 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001658 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001659 select AEABI
1660 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001661 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001662 help
1663 By enabling this option, the kernel will be compiled in
1664 Thumb-2 mode. A compiler/assembler that understand the unified
1665 ARM-Thumb syntax is needed.
1666
1667 If unsure, say N.
1668
Dave Martin6f685c52011-03-03 11:41:12 +01001669config THUMB2_AVOID_R_ARM_THM_JUMP11
1670 bool "Work around buggy Thumb-2 short branch relocations in gas"
1671 depends on THUMB2_KERNEL && MODULES
1672 default y
1673 help
1674 Various binutils versions can resolve Thumb-2 branches to
1675 locally-defined, preemptible global symbols as short-range "b.n"
1676 branch instructions.
1677
1678 This is a problem, because there's no guarantee the final
1679 destination of the symbol, or any candidate locations for a
1680 trampoline, are within range of the branch. For this reason, the
1681 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1682 relocation in modules at all, and it makes little sense to add
1683 support.
1684
1685 The symptom is that the kernel fails with an "unsupported
1686 relocation" error when loading some modules.
1687
1688 Until fixed tools are available, passing
1689 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1690 code which hits this problem, at the cost of a bit of extra runtime
1691 stack usage in some cases.
1692
1693 The problem is described in more detail at:
1694 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1695
1696 Only Thumb-2 kernels are affected.
1697
1698 Unless you are sure your tools don't have this problem, say Y.
1699
Catalin Marinas0becb082009-07-24 12:32:53 +01001700config ARM_ASM_UNIFIED
1701 bool
1702
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001703config AEABI
1704 bool "Use the ARM EABI to compile the kernel"
1705 help
1706 This option allows for the kernel to be compiled using the latest
1707 ARM ABI (aka EABI). This is only useful if you are using a user
1708 space environment that is also compiled with EABI.
1709
1710 Since there are major incompatibilities between the legacy ABI and
1711 EABI, especially with regard to structure member alignment, this
1712 option also changes the kernel syscall calling convention to
1713 disambiguate both ABIs and allow for backward compatibility support
1714 (selected with CONFIG_OABI_COMPAT).
1715
1716 To use this you need GCC version 4.0.0 or later.
1717
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001718config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001719 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001720 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001721 help
1722 This option preserves the old syscall interface along with the
1723 new (ARM EABI) one. It also provides a compatibility layer to
1724 intercept syscalls that have structure arguments which layout
1725 in memory differs between the legacy ABI and the new ARM EABI
1726 (only for non "thumb" binaries). This option adds a tiny
1727 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001728
1729 The seccomp filter system will not be available when this is
1730 selected, since there is no way yet to sensibly distinguish
1731 between calling conventions during filtering.
1732
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001733 If you know you'll be using only pure EABI user space then you
1734 can say N here. If this option is not selected and you attempt
1735 to execute a legacy ABI binary then the result will be
1736 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001737 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001738
Mel Gormaneb335752009-05-13 17:34:48 +01001739config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001740 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001741
Russell King05944d72006-11-30 20:43:51 +00001742config ARCH_SPARSEMEM_ENABLE
1743 bool
1744
Russell King07a2f732008-10-01 21:39:58 +01001745config ARCH_SPARSEMEM_DEFAULT
1746 def_bool ARCH_SPARSEMEM_ENABLE
1747
Russell King05944d72006-11-30 20:43:51 +00001748config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001749 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001750
Will Deacon7b7bf492011-05-19 13:21:14 +01001751config HAVE_ARCH_PFN_VALID
1752 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1753
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001754config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001755 bool "High Memory Support"
1756 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001757 help
1758 The address space of ARM processors is only 4 Gigabytes large
1759 and it has to accommodate user address space, kernel address
1760 space as well as some memory mapped IO. That means that, if you
1761 have a large amount of physical memory and/or IO, not all of the
1762 memory can be "permanently mapped" by the kernel. The physical
1763 memory that is not permanently mapped is called "high memory".
1764
1765 Depending on the selected kernel/user memory split, minimum
1766 vmalloc space and actual amount of RAM, you may not need this
1767 option which should result in a slightly faster kernel.
1768
1769 If unsure, say n.
1770
Russell King65cec8e2009-08-17 20:02:06 +01001771config HIGHPTE
1772 bool "Allocate 2nd-level pagetables from highmem"
1773 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001774
Jamie Iles1b8873a2010-02-02 20:25:44 +01001775config HW_PERF_EVENTS
1776 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001777 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001778 default y
1779 help
1780 Enable hardware performance counter support for perf events. If
1781 disabled, perf events will use software events only.
1782
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001783config SYS_SUPPORTS_HUGETLBFS
1784 def_bool y
1785 depends on ARM_LPAE
1786
Catalin Marinas8d962502012-07-25 14:39:26 +01001787config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1788 def_bool y
1789 depends on ARM_LPAE
1790
Steven Capper4bfab202013-07-26 14:58:22 +01001791config ARCH_WANT_GENERAL_HUGETLB
1792 def_bool y
1793
Dave Hansen3f22ab22005-06-23 00:07:43 -07001794source "mm/Kconfig"
1795
Magnus Dammc1b2d972010-07-05 10:00:11 +01001796config FORCE_MAX_ZONEORDER
1797 int "Maximum zone order" if ARCH_SHMOBILE
1798 range 11 64 if ARCH_SHMOBILE
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001799 default "12" if SOC_AM33XX
Magnus Dammc1b2d972010-07-05 10:00:11 +01001800 default "9" if SA1111
1801 default "11"
1802 help
1803 The kernel memory allocator divides physically contiguous memory
1804 blocks into "zones", where each zone is a power of two number of
1805 pages. This option selects the largest power of two that the kernel
1806 keeps in the memory allocator. If you need to allocate very large
1807 blocks of physically contiguous memory, then you may need to
1808 increase this value.
1809
1810 This config option is actually maximum order plus one. For example,
1811 a value of 11 means that the largest free memory block is 2^10 pages.
1812
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813config ALIGNMENT_TRAP
1814 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001815 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001816 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001817 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001819 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1821 address divisible by 4. On 32-bit ARM processors, these non-aligned
1822 fetch/store instructions will be emulated in software if you say
1823 here, which has a severe performance impact. This is necessary for
1824 correct operation of some network protocols. With an IP-only
1825 configuration it is safe to say N, otherwise say Y.
1826
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001827config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001828 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1829 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001830 default y if CPU_FEROCEON
1831 help
1832 Implement faster copy_to_user and clear_user methods for CPU
1833 cores where a 8-word STM instruction give significantly higher
1834 memory write throughput than a sequence of individual 32bit stores.
1835
1836 A possible side effect is a slight increase in scheduling latency
1837 between threads sharing the same address space if they invoke
1838 such copy operations with large buffers.
1839
1840 However, if the CPU data cache is using a write-allocate mode,
1841 this option is unlikely to provide any performance gain.
1842
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001843config SECCOMP
1844 bool
1845 prompt "Enable seccomp to safely compute untrusted bytecode"
1846 ---help---
1847 This kernel feature is useful for number crunching applications
1848 that may need to compute untrusted bytecode during their
1849 execution. By using pipes or other transports made available to
1850 the process as file descriptors supporting the read/write
1851 syscalls, it's possible to isolate those applications in
1852 their own address space using seccomp. Once seccomp is
1853 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1854 and the task is only allowed to execute a few safe syscalls
1855 defined by each seccomp mode.
1856
Nicolas Pitrec743f382010-05-24 23:55:42 -04001857config CC_STACKPROTECTOR
1858 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1859 help
1860 This option turns on the -fstack-protector GCC feature. This
1861 feature puts, at the beginning of functions, a canary value on
1862 the stack just before the return address, and validates
1863 the value just before actually returning. Stack based buffer
1864 overflows (that need to overwrite this return address) now also
1865 overwrite the canary, which gets detected and the attack is then
1866 neutralized via a kernel panic.
1867 This feature requires gcc version 4.2 or above.
1868
Stefano Stabellini06e62952013-10-15 15:47:14 +00001869config SWIOTLB
1870 def_bool y
1871
1872config IOMMU_HELPER
1873 def_bool SWIOTLB
1874
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001875config XEN_DOM0
1876 def_bool y
1877 depends on XEN
1878
1879config XEN
1880 bool "Xen guest support on ARM (EXPERIMENTAL)"
Ian Campbell85323a92013-03-07 07:17:25 +00001881 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001882 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001883 depends on !GENERIC_ATOMIC64
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001884 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001885 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001886 help
1887 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1888
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889endmenu
1890
1891menu "Boot options"
1892
Grant Likely9eb8f672011-04-28 14:27:20 -06001893config USE_OF
1894 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001895 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001896 select OF
1897 select OF_EARLY_FLATTREE
1898 help
1899 Include support for flattened device tree machine descriptions.
1900
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001901config ATAGS
1902 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1903 default y
1904 help
1905 This is the traditional way of passing data to the kernel at boot
1906 time. If you are solely relying on the flattened device tree (or
1907 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1908 to remove ATAGS support from your kernel binary. If unsure,
1909 leave this to y.
1910
1911config DEPRECATED_PARAM_STRUCT
1912 bool "Provide old way to pass kernel parameters"
1913 depends on ATAGS
1914 help
1915 This was deprecated in 2001 and announced to live on for 5 years.
1916 Some old boot loaders still use this way.
1917
Linus Torvalds1da177e2005-04-16 15:20:36 -07001918# Compressed boot loader in ROM. Yes, we really want to ask about
1919# TEXT and BSS so we preserve their values in the config files.
1920config ZBOOT_ROM_TEXT
1921 hex "Compressed ROM boot loader base address"
1922 default "0"
1923 help
1924 The physical address at which the ROM-able zImage is to be
1925 placed in the target. Platforms which normally make use of
1926 ROM-able zImage formats normally set this to a suitable
1927 value in their defconfig file.
1928
1929 If ZBOOT_ROM is not enabled, this has no effect.
1930
1931config ZBOOT_ROM_BSS
1932 hex "Compressed ROM boot loader BSS address"
1933 default "0"
1934 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001935 The base address of an area of read/write memory in the target
1936 for the ROM-able zImage which must be available while the
1937 decompressor is running. It must be large enough to hold the
1938 entire decompressed kernel plus an additional 128 KiB.
1939 Platforms which normally make use of ROM-able zImage formats
1940 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001941
1942 If ZBOOT_ROM is not enabled, this has no effect.
1943
1944config ZBOOT_ROM
1945 bool "Compressed boot loader in ROM/flash"
1946 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1947 help
1948 Say Y here if you intend to execute your compressed kernel image
1949 (zImage) directly from ROM or flash. If unsure, say N.
1950
Simon Horman090ab3f2011-04-26 06:29:53 +01001951choice
1952 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001953 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001954 default ZBOOT_ROM_NONE
1955 help
1956 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001957 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001958 kernel image to an MMC or SD card and boot the kernel straight
1959 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001960 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001961 rest the kernel image to RAM.
1962
1963config ZBOOT_ROM_NONE
1964 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1965 help
1966 Do not load image from SD or MMC
1967
Simon Hormanf45b1142011-01-11 04:01:08 +01001968config ZBOOT_ROM_MMCIF
1969 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001970 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001971 Load image from MMCIF hardware block.
1972
1973config ZBOOT_ROM_SH_MOBILE_SDHI
1974 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1975 help
1976 Load image from SDHI hardware block
1977
1978endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001979
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001980config ARM_APPENDED_DTB
1981 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001982 depends on OF && !ZBOOT_ROM
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001983 help
1984 With this option, the boot code will look for a device tree binary
1985 (DTB) appended to zImage
1986 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1987
1988 This is meant as a backward compatibility convenience for those
1989 systems with a bootloader that can't be upgraded to accommodate
1990 the documented boot protocol using a device tree.
1991
1992 Beware that there is very little in terms of protection against
1993 this option being confused by leftover garbage in memory that might
1994 look like a DTB header after a reboot if no actual DTB is appended
1995 to zImage. Do not leave this option active in a production kernel
1996 if you don't intend to always append a DTB. Proper passing of the
1997 location into r2 of a bootloader provided DTB is always preferable
1998 to this option.
1999
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04002000config ARM_ATAG_DTB_COMPAT
2001 bool "Supplement the appended DTB with traditional ATAG information"
2002 depends on ARM_APPENDED_DTB
2003 help
2004 Some old bootloaders can't be updated to a DTB capable one, yet
2005 they provide ATAGs with memory configuration, the ramdisk address,
2006 the kernel cmdline string, etc. Such information is dynamically
2007 provided by the bootloader and can't always be stored in a static
2008 DTB. To allow a device tree enabled kernel to be used with such
2009 bootloaders, this option allows zImage to extract the information
2010 from the ATAG list and store it at run time into the appended DTB.
2011
Genoud Richardd0f34a112012-06-26 16:37:59 +01002012choice
2013 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
2014 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
2015
2016config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
2017 bool "Use bootloader kernel arguments if available"
2018 help
2019 Uses the command-line options passed by the boot loader instead of
2020 the device tree bootargs property. If the boot loader doesn't provide
2021 any, the device tree bootargs property will be used.
2022
2023config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
2024 bool "Extend with bootloader kernel arguments"
2025 help
2026 The command-line arguments provided by the boot loader will be
2027 appended to the the device tree bootargs property.
2028
2029endchoice
2030
Linus Torvalds1da177e2005-04-16 15:20:36 -07002031config CMDLINE
2032 string "Default kernel command string"
2033 default ""
2034 help
2035 On some architectures (EBSA110 and CATS), there is currently no way
2036 for the boot loader to pass arguments to the kernel. For these
2037 architectures, you should supply some command-line options at build
2038 time by entering them here. As a minimum, you should specify the
2039 memory size and the root device (e.g., mem=64M root=/dev/nfs).
2040
Victor Boivie4394c122011-05-04 17:07:55 +01002041choice
2042 prompt "Kernel command line type" if CMDLINE != ""
2043 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002044 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01002045
2046config CMDLINE_FROM_BOOTLOADER
2047 bool "Use bootloader kernel arguments if available"
2048 help
2049 Uses the command-line options passed by the boot loader. If
2050 the boot loader doesn't provide any, the default kernel command
2051 string provided in CMDLINE will be used.
2052
2053config CMDLINE_EXTEND
2054 bool "Extend bootloader kernel arguments"
2055 help
2056 The command-line arguments provided by the boot loader will be
2057 appended to the default kernel command string.
2058
Alexander Holler92d20402010-02-16 19:04:53 +01002059config CMDLINE_FORCE
2060 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01002061 help
2062 Always use the default kernel command string, even if the boot
2063 loader passes other arguments to the kernel.
2064 This is useful if you cannot or don't want to change the
2065 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01002066endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01002067
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068config XIP_KERNEL
2069 bool "Kernel Execute-In-Place from ROM"
Rob Herring387798b2012-09-06 13:41:12 -05002070 depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071 help
2072 Execute-In-Place allows the kernel to run from non-volatile storage
2073 directly addressable by the CPU, such as NOR flash. This saves RAM
2074 space since the text section of the kernel is not loaded from flash
2075 to RAM. Read-write sections, such as the data section and stack,
2076 are still copied to RAM. The XIP kernel is not compressed since
2077 it has to run directly from flash, so it will take more space to
2078 store it. The flash address used to link the kernel object files,
2079 and for storing it, is configuration dependent. Therefore, if you
2080 say Y here, you must know the proper physical address where to
2081 store the kernel image depending on your own flash memory usage.
2082
2083 Also note that the make target becomes "make xipImage" rather than
2084 "make zImage" or "make Image". The final kernel binary to put in
2085 ROM memory will be arch/arm/boot/xipImage.
2086
2087 If unsure, say N.
2088
2089config XIP_PHYS_ADDR
2090 hex "XIP Kernel Physical Location"
2091 depends on XIP_KERNEL
2092 default "0x00080000"
2093 help
2094 This is the physical address in your flash memory the kernel will
2095 be linked for and stored to. This address is dependent on your
2096 own flash usage.
2097
Richard Purdiec587e4a2007-02-06 21:29:00 +01002098config KEXEC
2099 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002100 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002101 help
2102 kexec is a system call that implements the ability to shutdown your
2103 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002104 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002105 you can start any kernel with it, not just Linux.
2106
2107 It is an ongoing process to be certain the hardware in a machine
2108 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02002109 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01002110
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002111config ATAGS_PROC
2112 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002113 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002114 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002115 help
2116 Should the atags used to boot the kernel be exported in an "atags"
2117 file in procfs. Useful with kexec.
2118
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002119config CRASH_DUMP
2120 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002121 help
2122 Generate crash dump after being started by kexec. This should
2123 be normally only set in special crash dump kernels which are
2124 loaded in the main kernel with kexec-tools into a specially
2125 reserved region and then later executed after a crash by
2126 kdump/kexec. The crash dump kernel must be compiled to a
2127 memory address not used by the main kernel
2128
2129 For more details see Documentation/kdump/kdump.txt
2130
Eric Miaoe69edc792010-07-05 15:56:50 +02002131config AUTO_ZRELADDR
2132 bool "Auto calculation of the decompressed kernel image address"
Linus Walleije1b31442013-05-02 18:01:46 +02002133 depends on !ZBOOT_ROM
Eric Miaoe69edc792010-07-05 15:56:50 +02002134 help
2135 ZRELADDR is the physical address where the decompressed kernel
2136 image will be placed. If AUTO_ZRELADDR is selected, the address
2137 will be determined at run-time by masking the current IP with
2138 0xf8000000. This assumes the zImage being placed in the first 128MB
2139 from start of memory.
2140
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141endmenu
2142
Russell Kingac9d7ef2008-08-18 17:26:00 +01002143menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144
Ben Dooks89c52ed2009-07-30 23:23:24 +01002145if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147endif
2148
Russell Kingac9d7ef2008-08-18 17:26:00 +01002149source "drivers/cpuidle/Kconfig"
2150
2151endmenu
2152
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153menu "Floating point emulation"
2154
2155comment "At least one emulation must be selected"
2156
2157config FPE_NWFPE
2158 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002159 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002160 ---help---
2161 Say Y to include the NWFPE floating point emulator in the kernel.
2162 This is necessary to run most binaries. Linux does not currently
2163 support floating point hardware so you need to say Y here even if
2164 your machine has an FPA or floating point co-processor podule.
2165
2166 You may say N here if you are going to load the Acorn FPEmulator
2167 early in the bootup.
2168
2169config FPE_NWFPE_XP
2170 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002171 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002172 help
2173 Say Y to include 80-bit support in the kernel floating-point
2174 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2175 Note that gcc does not generate 80-bit operations by default,
2176 so in most cases this option only enlarges the size of the
2177 floating point emulator without any good reason.
2178
2179 You almost surely want to say N here.
2180
2181config FPE_FASTFPE
2182 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002183 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002184 ---help---
2185 Say Y here to include the FAST floating point emulator in the kernel.
2186 This is an experimental much faster emulator which now also has full
2187 precision for the mantissa. It does not support any exceptions.
2188 It is very simple, and approximately 3-6 times faster than NWFPE.
2189
2190 It should be sufficient for most programs. It may be not suitable
2191 for scientific calculations, but you have to check this for yourself.
2192 If you do not feel you need a faster FP emulation you should better
2193 choose NWFPE.
2194
2195config VFP
2196 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002197 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002198 help
2199 Say Y to include VFP support code in the kernel. This is needed
2200 if your hardware includes a VFP unit.
2201
2202 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2203 release notes and additional status information.
2204
2205 Say N if your target does not have VFP hardware.
2206
Catalin Marinas25ebee02007-09-25 15:22:24 +01002207config VFPv3
2208 bool
2209 depends on VFP
2210 default y if CPU_V7
2211
Catalin Marinasb5872db2008-01-10 19:16:17 +01002212config NEON
2213 bool "Advanced SIMD (NEON) Extension support"
2214 depends on VFPv3 && CPU_V7
2215 help
2216 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2217 Extension.
2218
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002219config KERNEL_MODE_NEON
2220 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002221 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002222 help
2223 Say Y to include support for NEON in kernel mode.
2224
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225endmenu
2226
2227menu "Userspace binary formats"
2228
2229source "fs/Kconfig.binfmt"
2230
2231config ARTHUR
2232 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002233 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234 help
2235 Say Y here to include the kernel code necessary if you want to run
2236 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2237 experimental; if this sounds frightening, say N and sleep in peace.
2238 You can also say M here to compile this support as a module (which
2239 will be called arthur).
2240
2241endmenu
2242
2243menu "Power management options"
2244
Russell Kingeceab4a2005-11-15 11:31:41 +00002245source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002246
Johannes Bergf4cb5702007-12-08 02:14:00 +01002247config ARCH_SUSPEND_POSSIBLE
Stephen Warren4b1082c2012-09-05 09:58:27 -06002248 depends on !ARCH_S5PC100
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002249 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Chao Xie3f5d0812012-05-07 11:23:58 +08002250 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002251 def_bool y
2252
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002253config ARM_CPU_SUSPEND
2254 def_bool PM_SLEEP
2255
Linus Torvalds1da177e2005-04-16 15:20:36 -07002256endmenu
2257
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002258source "net/Kconfig"
2259
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002260source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261
2262source "fs/Kconfig"
2263
Linus Torvalds1da177e2005-04-16 15:20:36 -07002264source "arch/arm/Kconfig.debug"
2265
2266source "security/Kconfig"
2267
2268source "crypto/Kconfig"
2269
2270source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002271
2272source "arch/arm/kvm/Kconfig"