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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
Russell Kingb1b3f492012-10-06 17:12:25 +01006 select ARCH_HAVE_CUSTOM_GPIO_H
Mark Rutland3d067702012-10-30 12:13:42 +00007 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Russell Kingb1b3f492012-10-06 17:12:25 +01008 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +01009 select BUILDTIME_EXTABLE_SORT if MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010010 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacon39b175a2012-12-04 12:57:11 +010011 select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010012 select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
13 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
14 select GENERIC_IRQ_PROBE
15 select GENERIC_IRQ_SHOW
Russell Kingb1b3f492012-10-06 17:12:25 +010016 select GENERIC_PCI_IOMAP
17 select GENERIC_SMP_IDLE_THREAD
Thomas Gleixnerf7b861b2013-03-21 22:49:38 +010018 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010019 select GENERIC_STRNCPY_FROM_USER
20 select GENERIC_STRNLEN_USER
21 select HARDIRQS_SW_RESEND
22 select HAVE_AOUT
Rabin Vincent09f05d82012-02-18 17:52:41 +010023 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060024 select HAVE_ARCH_KGDB
Will Drewry4095ccc2012-11-15 22:12:29 +010025 select HAVE_ARCH_SECCOMP_FILTER
Wade Farnsworth0693bf62012-04-04 16:19:47 +010026 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010027 select HAVE_BPF_JIT
28 select HAVE_C_RECORDMCOUNT
29 select HAVE_DEBUG_KMEMLEAK
30 select HAVE_DMA_API_DEBUG
31 select HAVE_DMA_ATTRS
32 select HAVE_DMA_CONTIGUOUS if MMU
33 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
34 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
35 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
36 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
37 select HAVE_GENERIC_DMA_COHERENT
38 select HAVE_GENERIC_HARDIRQS
39 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
40 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010041 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010042 select HAVE_KERNEL_GZIP
43 select HAVE_KERNEL_LZMA
44 select HAVE_KERNEL_LZO
45 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010046 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080047 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010048 select HAVE_MEMBLOCK
49 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jamie Iles7ada1892010-02-02 20:24:58 +010050 select HAVE_PERF_EVENTS
Will Deacone513f8b2010-06-25 12:24:53 +010051 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010052 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070053 select HAVE_UID16
Anna-Maria Gleixner3d92a712012-05-18 16:45:44 +000054 select KTIME_SCALAR
Russell Kingb1b3f492012-10-06 17:12:25 +010055 select PERF_USE_VMALLOC
56 select RTC_LIB
57 select SYS_SUPPORTS_APM_EMULATION
David Howells786d35d2012-09-28 14:31:03 +093058 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
59 select MODULES_USE_ELF_REL
Al Viro38a61b62012-10-21 15:54:27 -040060 select CLONE_BACKWARDS
Al Virob68fec22012-12-25 16:29:48 -050061 select OLD_SIGSUSPEND3
Al Viro50bcb7e2012-12-25 19:32:07 -050062 select OLD_SIGACTION
Kevin Hilmanb0088482013-03-28 22:54:40 +010063 select HAVE_CONTEXT_TRACKING
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 help
65 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000066 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000068 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 Europe. There is an ARM Linux project with a web page at
70 <http://www.arm.linux.org.uk/>.
71
Russell King74facff2011-06-02 11:16:22 +010072config ARM_HAS_SG_CHAIN
73 bool
74
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020075config NEED_SG_DMA_LENGTH
76 bool
77
78config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020079 bool
Russell Kingb1b3f492012-10-06 17:12:25 +010080 select ARM_HAS_SG_CHAIN
81 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020082
Seung-Woo Kim60460ab2013-02-06 13:21:14 +090083if ARM_DMA_USE_IOMMU
84
85config ARM_DMA_IOMMU_ALIGNMENT
86 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
87 range 4 9
88 default 8
89 help
90 DMA mapping framework by default aligns all buffers to the smallest
91 PAGE_SIZE order which is greater than or equal to the requested buffer
92 size. This works well for buffers up to a few hundreds kilobytes, but
93 for larger buffers it just a waste of address space. Drivers which has
94 relatively small addressing window (like 64Mib) might run out of
95 virtual space with just a few allocations.
96
97 With this parameter you can specify the maximum PAGE_SIZE order for
98 DMA IOMMU buffers. Larger buffers will be aligned only to this
99 specified order. The order is expressed as a power of two multiplied
100 by the PAGE_SIZE.
101
102endif
103
Russell King1a189b92008-04-13 21:41:55 +0100104config HAVE_PWM
105 bool
106
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100107config MIGHT_HAVE_PCI
108 bool
109
Ralf Baechle75e71532007-02-09 17:08:58 +0000110config SYS_SUPPORTS_APM_EMULATION
111 bool
112
David Brownell0a938b92007-03-05 00:30:18 -0800113config GENERIC_GPIO
114 bool
David Brownell0a938b92007-03-05 00:30:18 -0800115
Linus Walleijbc581772009-09-15 17:30:37 +0100116config HAVE_TCM
117 bool
118 select GENERIC_ALLOCATOR
119
Russell Kinge119bff2010-01-10 17:23:29 +0000120config HAVE_PROC_CPU
121 bool
122
Al Viro5ea81762007-02-11 15:41:31 +0000123config NO_IOPORT
124 bool
Al Viro5ea81762007-02-11 15:41:31 +0000125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126config EISA
127 bool
128 ---help---
129 The Extended Industry Standard Architecture (EISA) bus was
130 developed as an open alternative to the IBM MicroChannel bus.
131
132 The EISA bus provided some of the features of the IBM MicroChannel
133 bus while maintaining backward compatibility with cards made for
134 the older ISA bus. The EISA bus saw limited use between 1988 and
135 1995 when it was made obsolete by the PCI bus.
136
137 Say Y here if you are building a kernel for an EISA-based machine.
138
139 Otherwise, say N.
140
141config SBUS
142 bool
143
Russell Kingf16fb1e2007-04-28 09:59:37 +0100144config STACKTRACE_SUPPORT
145 bool
146 default y
147
Nicolas Pitref76e9152008-04-24 01:31:46 -0400148config HAVE_LATENCYTOP_SUPPORT
149 bool
150 depends on !SMP
151 default y
152
Russell Kingf16fb1e2007-04-28 09:59:37 +0100153config LOCKDEP_SUPPORT
154 bool
155 default y
156
Russell King7ad1bcb2006-08-27 12:07:02 +0100157config TRACE_IRQFLAGS_SUPPORT
158 bool
159 default y
160
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161config RWSEM_GENERIC_SPINLOCK
162 bool
163 default y
164
165config RWSEM_XCHGADD_ALGORITHM
166 bool
167
David Howellsf0d1b0b2006-12-08 02:37:49 -0800168config ARCH_HAS_ILOG2_U32
169 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800170
171config ARCH_HAS_ILOG2_U64
172 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800173
Ben Dooks89c52ed2009-07-30 23:23:24 +0100174config ARCH_HAS_CPUFREQ
175 bool
176 help
177 Internal node to signify that the ARCH has CPUFREQ support
178 and that the relevant menu configurations are displayed for
179 it.
180
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800181config GENERIC_HWEIGHT
182 bool
183 default y
184
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185config GENERIC_CALIBRATE_DELAY
186 bool
187 default y
188
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100189config ARCH_MAY_HAVE_PC_FDC
190 bool
191
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800192config ZONE_DMA
193 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800194
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800195config NEED_DMA_MAP_STATE
196 def_bool y
197
Rob Herring58af4a22012-03-20 14:33:01 -0500198config ARCH_HAS_DMA_SET_COHERENT_MASK
199 bool
200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201config GENERIC_ISA_DMA
202 bool
203
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204config FIQ
205 bool
206
Rob Herring13a50452012-02-07 09:28:22 -0600207config NEED_RET_TO_USER
208 bool
209
Al Viro034d2f52005-12-19 16:27:59 -0500210config ARCH_MTD_XIP
211 bool
212
Hyok S. Choic760fc12006-03-27 15:18:50 +0100213config VECTORS_BASE
214 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900215 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100216 default DRAM_BASE if REMAP_VECTORS_TO_RAM
217 default 0x00000000
218 help
219 The base address of exception vectors.
220
Russell Kingdc21af92011-01-04 19:09:43 +0000221config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100222 bool "Patch physical to virtual translations at runtime" if EMBEDDED
223 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100224 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000225 depends on !ARCH_REALVIEW || !SPARSEMEM
226 help
Russell King111e9a52011-05-12 10:02:42 +0100227 Patch phys-to-virt and virt-to-phys translation functions at
228 boot and module load time according to the position of the
229 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000230
Russell King111e9a52011-05-12 10:02:42 +0100231 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100232 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000233
Russell Kingc1beced2011-08-10 10:23:45 +0100234 Only disable this option if you know that you do not require
235 this feature (eg, building a kernel for a single machine) and
236 you need to shrink the kernel to the minimal size.
237
Rob Herring01464222012-08-28 13:06:41 -0500238config NEED_MACH_GPIO_H
239 bool
240 help
241 Select this when mach/gpio.h is required to provide special
242 definitions for this platform. The need for mach/gpio.h should
243 be avoided when possible.
244
Rob Herringc334bc12012-03-04 22:03:33 -0600245config NEED_MACH_IO_H
246 bool
247 help
248 Select this when mach/io.h is required to provide special
249 definitions for this platform. The need for mach/io.h should
250 be avoided when possible.
251
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400252config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400253 bool
Russell King111e9a52011-05-12 10:02:42 +0100254 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400255 Select this when mach/memory.h is required to provide special
256 definitions for this platform. The need for mach/memory.h should
257 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400258
259config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100260 hex "Physical address of main memory" if MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400261 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
Nicolas Pitre974c0722011-12-02 23:09:42 +0100262 default DRAM_BASE if !MMU
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400263 help
264 Please provide the physical address corresponding to the
265 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000266
Simon Glass87e040b2011-08-16 23:44:26 +0100267config GENERIC_BUG
268 def_bool y
269 depends on BUG
270
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271source "init/Kconfig"
272
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700273source "kernel/Kconfig.freezer"
274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275menu "System Type"
276
Hyok S. Choi3c427972009-07-24 12:35:00 +0100277config MMU
278 bool "MMU-based Paged Memory Management Support"
279 default y
280 help
281 Select if you want MMU-based virtualised addressing space
282 support by paged memory management. If unsure, say 'Y'.
283
Russell Kingccf50e22010-03-15 19:03:06 +0000284#
285# The "ARM system type" choice list is ordered alphabetically by option
286# text. Please add new entries in the option alphabetic order.
287#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288choice
289 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100290 default ARCH_VERSATILE if !MMU
291 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292
Rob Herring387798b2012-09-06 13:41:12 -0500293config ARCH_MULTIPLATFORM
294 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100295 depends on MMU
Rob Herring387798b2012-09-06 13:41:12 -0500296 select ARM_PATCH_PHYS_VIRT
297 select AUTO_ZRELADDR
Dinh Nguyen66314222012-07-18 16:07:18 -0600298 select COMMON_CLK
Rob Herring387798b2012-09-06 13:41:12 -0500299 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600300 select SPARSE_IRQ
301 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600302
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100303config ARCH_INTEGRATOR
304 bool "ARM Ltd. Integrator family"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100305 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100306 select ARM_AMBA
Linus Walleija6131632012-06-11 17:33:12 +0200307 select COMMON_CLK
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200308 select COMMON_CLK_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100309 select GENERIC_CLOCKEVENTS
Linus Walleij9904f792011-12-09 10:29:23 +0100310 select HAVE_TCM
Russell Kingc5a0adb2010-01-16 20:16:10 +0000311 select ICST
Russell Kingb1b3f492012-10-06 17:12:25 +0100312 select MULTI_IRQ_HANDLER
313 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000314 select PLAT_VERSATILE
Linus Walleij695436e2012-02-26 10:46:48 +0100315 select SPARSE_IRQ
Linus Walleij2389d502012-10-31 22:04:31 +0100316 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100317 help
318 Support for ARM's Integrator platform.
319
320config ARCH_REALVIEW
321 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100322 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100323 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100324 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200325 select COMMON_CLK
326 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100327 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100328 select GPIO_PL061 if GPIOLIB
329 select ICST
330 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000331 select PLAT_VERSATILE
Russell King3cb5ee42011-01-18 20:13:20 +0000332 select PLAT_VERSATILE_CLCD
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100333 help
334 This enables support for ARM Ltd RealView boards.
335
336config ARCH_VERSATILE
337 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100338 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100339 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100340 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100341 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100342 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100343 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900344 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000345 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000346 select PLAT_VERSATILE
Russell King3414ba82011-01-18 20:12:10 +0000347 select PLAT_VERSATILE_CLCD
Russell Kingb1b3f492012-10-06 17:12:25 +0100348 select PLAT_VERSATILE_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100349 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100350 help
351 This enables support for ARM Ltd Versatile board.
352
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100353config ARCH_AT91
354 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100355 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100356 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100357 select HAVE_CLK
Nicolas Ferree2615012011-11-22 22:26:09 +0100358 select IRQ_DOMAIN
Rob Herring01464222012-08-28 13:06:41 -0500359 select NEED_MACH_GPIO_H
Rob Herring1ac02d72012-04-04 17:48:04 -0500360 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800361 select PINCTRL
362 select PINCTRL_AT91 if USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100363 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100364 This enables support for systems based on Atmel
365 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100366
Russell King93e22562012-10-12 14:20:52 +0100367config ARCH_CLPS711X
368 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400369 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400370 select AUTO_ZRELADDR
Russell King93e22562012-10-12 14:20:52 +0100371 select CLKDEV_LOOKUP
372 select COMMON_CLK
373 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400374 select GENERIC_CLOCKEVENTS
Alexander Shiyan99f04c82012-11-17 17:57:14 +0400375 select MULTI_IRQ_HANDLER
Russell King93e22562012-10-12 14:20:52 +0100376 select NEED_MACH_MEMORY_H
Alexander Shiyan0d8be812012-11-17 17:57:13 +0400377 select SPARSE_IRQ
Russell King93e22562012-10-12 14:20:52 +0100378 help
379 Support for Cirrus Logic 711x/721x/731x based boards.
380
Russell King788c9702009-04-26 14:21:59 +0100381config ARCH_GEMINI
382 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100383 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000384 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmann662146b2013-01-04 13:38:03 +0000385 select NEED_MACH_GPIO_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100386 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100387 help
388 Support for the Cortina Systems Gemini family SoCs
389
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390config ARCH_EBSA110
391 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100392 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000393 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100394 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600395 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400396 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100397 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 help
399 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000400 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 Ethernet interface, two PCMCIA sockets, two serial ports and a
402 parallel port.
403
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000404config ARCH_EP93XX
405 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100406 select ARCH_HAS_HOLES_MEMORYMODEL
407 select ARCH_REQUIRE_GPIOLIB
408 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000409 select ARM_AMBA
410 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100411 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100412 select CPU_ARM920T
Arnd Bergmann5725aea2011-10-31 23:11:46 +0100413 select NEED_MACH_MEMORY_H
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000414 help
415 This enables support for the Cirrus EP93xx series of CPUs.
416
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417config ARCH_FOOTBRIDGE
418 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000419 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000421 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200422 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600423 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400424 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000425 help
426 Support for systems based on the DC21285 companion chip
427 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100429config ARCH_NETX
430 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100431 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100432 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000433 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100434 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000435 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100436 This enables support for systems based on the Hilscher NetX Soc
437
Russell King3b938be2007-05-12 11:25:44 +0100438config ARCH_IOP13XX
439 bool "IOP13xx-based"
440 depends on MMU
Russell King3b938be2007-05-12 11:25:44 +0100441 select ARCH_SUPPORTS_MSI
Russell Kingb1b3f492012-10-06 17:12:25 +0100442 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400443 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600444 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100445 select PCI
446 select PLAT_IOP
447 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100448 help
449 Support for Intel's IOP13XX (XScale) family of processors.
450
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100451config ARCH_IOP32X
452 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100453 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100454 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000455 select CPU_XSCALE
Rob Herring01464222012-08-28 13:06:41 -0500456 select NEED_MACH_GPIO_H
Rob Herring13a50452012-02-07 09:28:22 -0600457 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100458 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100459 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000460 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100461 Support for Intel's 80219 and IOP32X (XScale) family of
462 processors.
463
464config ARCH_IOP33X
465 bool "IOP33x-based"
466 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100467 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000468 select CPU_XSCALE
Rob Herring01464222012-08-28 13:06:41 -0500469 select NEED_MACH_GPIO_H
Rob Herring13a50452012-02-07 09:28:22 -0600470 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100471 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100472 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100473 help
474 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
Russell King3b938be2007-05-12 11:25:44 +0100476config ARCH_IXP4XX
477 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100478 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500479 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100480 select ARCH_REQUIRE_GPIOLIB
Russell King234b6ced2011-05-08 14:09:47 +0100481 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000482 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100483 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100484 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100485 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600486 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200487 select USB_EHCI_BIG_ENDIAN_MMIO
488 select USB_EHCI_BIG_ENDIAN_DESC
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100489 help
Russell King3b938be2007-05-12 11:25:44 +0100490 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100491
Saeed Bisharaedabd382009-08-06 15:12:43 +0300492config ARCH_DOVE
493 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300494 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100495 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300496 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100497 select MIGHT_HAVE_PCI
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100498 select PINCTRL
499 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200500 select PLAT_ORION_LEGACY
Russell King0f81bd42012-09-09 20:34:13 +0100501 select USB_ARCH_HAS_EHCI
Saeed Bisharaedabd382009-08-06 15:12:43 +0300502 help
503 Support for the Marvell Dove SoC 88AP510
504
Saeed Bishara651c74c2008-06-22 22:45:06 +0200505config ARCH_KIRKWOOD
506 bool "Marvell Kirkwood"
Erik Benadaa8865652009-05-28 17:08:55 -0700507 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100508 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200509 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100510 select PCI
Jason Gunthorpe1dc831b2012-11-21 00:19:06 -0700511 select PCI_QUIRKS
Andrew Lunnf9e75922012-11-17 17:00:44 +0100512 select PINCTRL
513 select PINCTRL_KIRKWOOD
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200514 select PLAT_ORION_LEGACY
Saeed Bishara651c74c2008-06-22 22:45:06 +0200515 help
516 Support for the following Marvell Kirkwood series SoCs:
517 88F6180, 88F6192 and 88F6281.
518
Russell King788c9702009-04-26 14:21:59 +0100519config ARCH_MV78XX0
520 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700521 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100522 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100523 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100524 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200525 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100526 help
527 Support for the following Marvell MV78xx0 series SoCs:
528 MV781x0, MV782x0.
529
530config ARCH_ORION5X
531 bool "Marvell Orion"
532 depends on MMU
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 Kingb1b3f492012-10-06 17:12:25 +0100536 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200537 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100538 help
539 Support for the following Marvell Orion 5x series SoCs:
540 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
541 Orion-2 (5281), Orion-1-90 (6183).
542
543config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500544 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100545 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100546 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100547 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100548 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100549 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800550 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800551 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100552 select NEED_MACH_GPIO_H
Axel Lin7c8f86a2012-11-28 14:42:35 +0800553 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100554 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400555 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100556 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500557 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100558
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100559config ARCH_KS8695
560 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100561 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200562 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100563 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200564 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100565 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100566 help
567 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
568 System-on-Chip devices.
569
Russell King788c9702009-04-26 14:21:59 +0100570config ARCH_W90X900
571 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100572 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100573 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100574 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100575 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100576 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200577 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100578 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
579 At present, the w90x900 has been renamed nuc900, regarding
580 the ARM series product line, you can login the following
581 link address to know more.
582
583 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
584 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400585
Russell King93e22562012-10-12 14:20:52 +0100586config ARCH_LPC32XX
587 bool "NXP LPC32XX"
588 select ARCH_REQUIRE_GPIOLIB
589 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000590 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100591 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100592 select CPU_ARM926T
593 select GENERIC_CLOCKEVENTS
594 select HAVE_IDE
595 select HAVE_PWM
596 select USB_ARCH_HAS_OHCI
597 select USE_OF
598 help
599 Support for the NXP LPC32XX family of processors
600
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700602 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100603 depends on MMU
Ben Dooks89c52ed2009-07-30 23:23:24 +0100604 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100605 select ARCH_MTD_XIP
606 select ARCH_REQUIRE_GPIOLIB
607 select ARM_CPU_SUSPEND if PM
608 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100609 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100610 select CLKSRC_MMIO
Eric Miao981d0f32007-07-24 01:22:43 +0100611 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800612 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100613 select HAVE_IDE
614 select MULTI_IRQ_HANDLER
615 select NEED_MACH_GPIO_H
Eric Miaobd5ce432009-01-20 12:06:01 +0800616 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800617 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000618 help
eric miao2c8086a2007-09-11 19:13:17 -0700619 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
Russell King788c9702009-04-26 14:21:59 +0100621config ARCH_MSM
622 bool "Qualcomm MSM"
Pavel Machek923a0812010-06-02 11:11:12 -0700623 select ARCH_REQUIRE_GPIOLIB
Stephen Boydbd323442011-02-23 09:37:42 -0800624 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100625 select GENERIC_CLOCKEVENTS
626 select HAVE_CLK
Eric Miao49cbe782009-01-20 14:15:18 +0800627 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800628 Support for Qualcomm MSM/QSD based systems. This runs on the
629 apps processor of the MSM/QSD and depends on a shared memory
630 interface to the modem processor which runs the baseband
631 stack and controls some vital subsystems
632 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800633
Magnus Dammc793c1b2010-02-05 11:14:49 +0000634config ARCH_SHMOBILE
Paul Mundt6d72ad32010-11-16 16:10:20 +0900635 bool "Renesas SH-Mobile / R-Mobile"
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900636 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100637 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800638 select HAVE_ARM_SCU if SMP
639 select HAVE_ARM_TWD if LOCAL_TIMERS
Russell Kingb1b3f492012-10-06 17:12:25 +0100640 select HAVE_CLK
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900641 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000642 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000643 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000644 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400645 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100646 select NO_IOPORT
Laurent Pincharta47029c2012-12-15 23:50:56 +0100647 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100648 select PM_GENERIC_DOMAINS if PM
649 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000650 help
Paul Mundt6d72ad32010-11-16 16:10:20 +0900651 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000652
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653config ARCH_RPC
654 bool "RiscPC"
655 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100656 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100657 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000658 select ARCH_USES_GETTIMEOFFSET
Russell Kingb1b3f492012-10-06 17:12:25 +0100659 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200660 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100661 select HAVE_PATA_PLATFORM
662 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600663 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400664 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100665 select NO_IOPORT
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100666 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 help
668 On the Acorn Risc-PC, Linux can support the internal IDE disk and
669 CD-ROM interface, serial and parallel port, and the floppy drive.
670
671config ARCH_SA1100
672 bool "SA1100-based"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100673 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100674 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700675 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100676 select ARCH_SPARSEMEM_ENABLE
677 select CLKDEV_LOOKUP
678 select CLKSRC_MMIO
679 select CPU_FREQ
680 select CPU_SA1100
681 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200682 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100683 select ISA
Rob Herring01464222012-08-28 13:06:41 -0500684 select NEED_MACH_GPIO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400685 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100686 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000687 help
688 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900690config ARCH_S3C24XX
691 bool "Samsung S3C24XX SoCs"
Ben Dooks9d56c022009-07-30 23:23:25 +0100692 select ARCH_HAS_CPUFREQ
John Stultz5cfc8ee2010-03-24 00:22:36 +0000693 select ARCH_USES_GETTIMEOFFSET
Russell Kingb1b3f492012-10-06 17:12:25 +0100694 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100695 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900696 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900697 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100698 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500699 select NEED_MACH_GPIO_H
Rob Herringc334bc12012-03-04 22:03:33 -0600700 select NEED_MACH_IO_H
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900702 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
703 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
704 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
705 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900706
Ben Dooksa08ab632008-10-21 14:06:39 +0100707config ARCH_S3C64XX
708 bool "Samsung S3C64XX"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100709 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900710 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100711 select ARCH_USES_GETTIMEOFFSET
712 select ARM_VIC
713 select CLKDEV_LOOKUP
714 select CPU_V6
715 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900716 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900717 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100718 select HAVE_TCM
Rob Herring01464222012-08-28 13:06:41 -0500719 select NEED_MACH_GPIO_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100720 select NO_IOPORT
721 select PLAT_SAMSUNG
722 select S3C_DEV_NAND
723 select S3C_GPIO_TRACK
724 select SAMSUNG_CLKSRC
725 select SAMSUNG_GPIOLIB_4BIT
726 select SAMSUNG_IRQ_VIC_TIMER
727 select USB_ARCH_HAS_OHCI
Ben Dooksa08ab632008-10-21 14:06:39 +0100728 help
729 Samsung S3C64XX series based systems
730
Kukjin Kim49b7a492010-09-07 15:47:18 +0900731config ARCH_S5P64X0
732 bool "Samsung S5P6440 S5P6450"
Thomas Abrahamd8b22d22011-06-14 19:12:27 +0900733 select CLKDEV_LOOKUP
Chanwoo Choi0665ccc2011-07-18 15:07:14 +0900734 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100735 select CPU_V6
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900736 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100737 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900738 select HAVE_S3C2410_I2C if I2C
Russell Kingb1b3f492012-10-06 17:12:25 +0100739 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim754961a2010-11-13 16:11:46 +0900740 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500741 select NEED_MACH_GPIO_H
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900742 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900743 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
744 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900745
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200746config ARCH_S5PC100
747 bool "Samsung S5PC100"
Russell Kingb1b3f492012-10-06 17:12:25 +0100748 select ARCH_USES_GETTIMEOFFSET
Thomas Abraham29e8eb02011-06-14 19:12:27 +0900749 select CLKDEV_LOOKUP
Byungho Min5a7652f2009-06-23 21:39:42 +0900750 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100751 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900752 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900753 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100754 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500755 select NEED_MACH_GPIO_H
Byungho Min5a7652f2009-06-23 21:39:42 +0900756 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200757 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900758
Kukjin Kim170f4e42010-02-24 16:40:44 +0900759config ARCH_S5PV210
760 bool "Samsung S5PV210/S5PC110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100761 select ARCH_HAS_CPUFREQ
Kamil Debski0f75a962011-07-21 16:42:30 +0900762 select ARCH_HAS_HOLES_MEMORYMODEL
Russell Kingb1b3f492012-10-06 17:12:25 +0100763 select ARCH_SPARSEMEM_ENABLE
Thomas Abrahamb2a9dd42011-06-14 19:12:27 +0900764 select CLKDEV_LOOKUP
Chanwoo Choi0665ccc2011-07-18 15:07:14 +0900765 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100766 select CPU_V7
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900767 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100768 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900769 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900770 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100771 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500772 select NEED_MACH_GPIO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400773 select NEED_MACH_MEMORY_H
Kukjin Kim170f4e42010-02-24 16:40:44 +0900774 help
775 Samsung S5PV210/S5PC110 series based systems
776
Kukjin Kim83014572011-11-06 13:54:56 +0900777config ARCH_EXYNOS
Russell King93e22562012-10-12 14:20:52 +0100778 bool "Samsung EXYNOS"
Russell Kingb1b3f492012-10-06 17:12:25 +0100779 select ARCH_HAS_CPUFREQ
Kamil Debski0f75a962011-07-21 16:42:30 +0900780 select ARCH_HAS_HOLES_MEMORYMODEL
Russell Kingb1b3f492012-10-06 17:12:25 +0100781 select ARCH_SPARSEMEM_ENABLE
782 select CLKDEV_LOOKUP
783 select CPU_V7
784 select GENERIC_CLOCKEVENTS
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900785 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900786 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900787 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100788 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500789 select NEED_MACH_GPIO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400790 select NEED_MACH_MEMORY_H
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900791 help
Kukjin Kim83014572011-11-06 13:54:56 +0900792 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900793
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794config ARCH_SHARK
795 bool "Shark"
Russell Kingb1b3f492012-10-06 17:12:25 +0100796 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000797 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100798 select ISA
799 select ISA_DMA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400800 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100801 select PCI
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100802 select VIRT_TO_BUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100803 select ZONE_DMA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000804 help
805 Support for the StrongARM based Digital DNARD machine, also known
806 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807
Linus Walleijd98aac72009-04-27 10:21:46 +0100808config ARCH_U300
809 bool "ST-Ericsson U300 Series"
810 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100811 select ARCH_REQUIRE_GPIOLIB
Linus Walleijd98aac72009-04-27 10:21:46 +0100812 select ARM_AMBA
Linus Walleij5485c1e2011-08-09 21:18:20 +0200813 select ARM_PATCH_PHYS_VIRT
Linus Walleijd98aac72009-04-27 10:21:46 +0100814 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100815 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100816 select CLKSRC_MMIO
Linus Walleij50667d62012-06-19 23:44:25 +0200817 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100818 select CPU_ARM926T
819 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100820 select HAVE_TCM
Linus Walleija4fe2922012-08-13 13:49:45 +0200821 select SPARSE_IRQ
Linus Walleijd98aac72009-04-27 10:21:46 +0100822 help
823 Support for ST-Ericsson U300 series mobile platforms.
824
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100825config ARCH_DAVINCI
826 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100827 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700828 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100829 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700830 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100831 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100832 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100833 select HAVE_IDE
Rob Herring01464222012-08-28 13:06:41 -0500834 select NEED_MACH_GPIO_H
Sekhar Nori689e3312012-08-28 15:27:52 +0530835 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100836 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100837 help
838 Support for TI's DaVinci platform.
839
Tony Lindgrena0694862013-01-11 11:24:20 -0800840config ARCH_OMAP1
841 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600842 depends on MMU
Ben Dooks89c52ed2009-07-30 23:23:24 +0100843 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100844 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800845 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100846 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200847 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100848 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100849 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800850 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100851 select HAVE_CLK
Tony Lindgrena0694862013-01-11 11:24:20 -0800852 select HAVE_IDE
853 select IRQ_DOMAIN
854 select NEED_MACH_IO_H if PCCARD
855 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100856 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800857 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800858
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859endchoice
860
Rob Herring387798b2012-09-06 13:41:12 -0500861menu "Multiple platform selection"
862 depends on ARCH_MULTIPLATFORM
863
864comment "CPU Core family selection"
865
866config ARCH_MULTI_V4
867 bool "ARMv4 based platforms (FA526, StrongARM)"
Rob Herring387798b2012-09-06 13:41:12 -0500868 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100869 select ARCH_MULTI_V4_V5
Rob Herring387798b2012-09-06 13:41:12 -0500870
871config ARCH_MULTI_V4T
872 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500873 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100874 select ARCH_MULTI_V4_V5
Rob Herring387798b2012-09-06 13:41:12 -0500875
876config ARCH_MULTI_V5
877 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500878 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100879 select ARCH_MULTI_V4_V5
Rob Herring387798b2012-09-06 13:41:12 -0500880
881config ARCH_MULTI_V4_V5
882 bool
883
884config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800885 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500886 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100887 select CPU_V6
Rob Herring387798b2012-09-06 13:41:12 -0500888
889config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800890 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500891 default y
892 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100893 select ARCH_VEXPRESS
894 select CPU_V7
Rob Herring387798b2012-09-06 13:41:12 -0500895
896config ARCH_MULTI_V6_V7
897 bool
898
899config ARCH_MULTI_CPU_AUTO
900 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
901 select ARCH_MULTI_V5
902
903endmenu
904
Russell Kingccf50e22010-03-15 19:03:06 +0000905#
906# This is sorted alphabetically by mach-* pathname. However, plat-*
907# Kconfigs may be included either alphabetically (according to the
908# plat- suffix) or along side the corresponding mach-* source.
909#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200910source "arch/arm/mach-mvebu/Kconfig"
911
Russell King95b8f202010-01-14 11:43:54 +0000912source "arch/arm/mach-at91/Kconfig"
913
Christian Daudt8ac49e02012-11-19 09:46:10 -0800914source "arch/arm/mach-bcm/Kconfig"
915
Stephen Warrenf1ac9222013-03-11 22:40:18 -0600916source "arch/arm/mach-bcm2835/Kconfig"
917
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918source "arch/arm/mach-clps711x/Kconfig"
919
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300920source "arch/arm/mach-cns3xxx/Kconfig"
921
Russell King95b8f202010-01-14 11:43:54 +0000922source "arch/arm/mach-davinci/Kconfig"
923
924source "arch/arm/mach-dove/Kconfig"
925
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000926source "arch/arm/mach-ep93xx/Kconfig"
927
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928source "arch/arm/mach-footbridge/Kconfig"
929
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200930source "arch/arm/mach-gemini/Kconfig"
931
Rob Herring387798b2012-09-06 13:41:12 -0500932source "arch/arm/mach-highbank/Kconfig"
933
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934source "arch/arm/mach-integrator/Kconfig"
935
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100936source "arch/arm/mach-iop32x/Kconfig"
937
938source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939
Dan Williams285f5fa2006-12-07 02:59:39 +0100940source "arch/arm/mach-iop13xx/Kconfig"
941
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942source "arch/arm/mach-ixp4xx/Kconfig"
943
Russell King95b8f202010-01-14 11:43:54 +0000944source "arch/arm/mach-kirkwood/Kconfig"
945
946source "arch/arm/mach-ks8695/Kconfig"
947
Russell King95b8f202010-01-14 11:43:54 +0000948source "arch/arm/mach-msm/Kconfig"
949
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200950source "arch/arm/mach-mv78xx0/Kconfig"
951
Shawn Guo3995eb82012-09-13 19:48:07 +0800952source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800954source "arch/arm/mach-mxs/Kconfig"
955
Russell King95b8f202010-01-14 11:43:54 +0000956source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800957
Russell King95b8f202010-01-14 11:43:54 +0000958source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000959
Tony Lindgrend48af152005-07-10 19:58:17 +0100960source "arch/arm/plat-omap/Kconfig"
961
962source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963
Tony Lindgren1dbae812005-11-10 14:26:51 +0000964source "arch/arm/mach-omap2/Kconfig"
965
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400966source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400967
Rob Herring387798b2012-09-06 13:41:12 -0500968source "arch/arm/mach-picoxcell/Kconfig"
969
Russell King95b8f202010-01-14 11:43:54 +0000970source "arch/arm/mach-pxa/Kconfig"
971source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972
Russell King95b8f202010-01-14 11:43:54 +0000973source "arch/arm/mach-mmp/Kconfig"
974
975source "arch/arm/mach-realview/Kconfig"
976
977source "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
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900985source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986
Ben Dooksa08ab632008-10-21 14:06:39 +0100987if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +0900988source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100989endif
990
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
Russell Kinge3887712010-01-14 13:30:16 +00001052
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053source arch/arm/mm/Kconfig
1054
Russell King958cab02011-12-11 10:04:00 +00001055config ARM_NR_BANKS
1056 int
1057 default 16 if ARCH_EP93XX
1058 default 8
1059
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001060config IWMMXT
Russell King698613b2013-04-03 16:33:26 +01001061 bool "Enable iWMMXt support" if !CPU_PJ4
Haojian Zhuangef6c8442010-11-24 11:54:25 +08001062 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
Russell King698613b2013-04-03 16:33:26 +01001063 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001064 help
1065 Enable support for iWMMXt context switching at run time if
1066 running on a CPU that supports it.
1067
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068config XSCALE_PMU
1069 bool
Paul Bollebfc994b2011-10-30 12:51:41 +01001070 depends on CPU_XSCALE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071 default y
1072
eric miao52108642010-12-13 09:42:34 +01001073config MULTI_IRQ_HANDLER
1074 bool
1075 help
1076 Allow each machine to specify it's own IRQ handler at run time.
1077
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001078if !MMU
1079source "arch/arm/Kconfig-nommu"
1080endif
1081
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001082config ARM_ERRATA_326103
1083 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1084 depends on CPU_V6
1085 help
1086 Executing a SWP instruction to read-only memory does not set bit 11
1087 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1088 treat the access as a read, preventing a COW from occurring and
1089 causing the faulting task to livelock.
1090
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001091config ARM_ERRATA_411920
1092 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001093 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001094 help
1095 Invalidation of the Instruction Cache operation can
1096 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1097 It does not affect the MPCore. This option enables the ARM Ltd.
1098 recommended workaround.
1099
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001100config ARM_ERRATA_430973
1101 bool "ARM errata: Stale prediction on replaced interworking branch"
1102 depends on CPU_V7
1103 help
1104 This option enables the workaround for the 430973 Cortex-A8
1105 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1106 interworking branch is replaced with another code sequence at the
1107 same virtual address, whether due to self-modifying code or virtual
1108 to physical address re-mapping, Cortex-A8 does not recover from the
1109 stale interworking branch prediction. This results in Cortex-A8
1110 executing the new code sequence in the incorrect ARM or Thumb state.
1111 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1112 and also flushes the branch target cache at every context switch.
1113 Note that setting specific bits in the ACTLR register may not be
1114 available in non-secure mode.
1115
Catalin Marinas855c5512009-04-30 17:06:15 +01001116config ARM_ERRATA_458693
1117 bool "ARM errata: Processor deadlock when a false hazard is created"
1118 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001119 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001120 help
1121 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1122 erratum. For very specific sequences of memory operations, it is
1123 possible for a hazard condition intended for a cache line to instead
1124 be incorrectly associated with a different cache line. This false
1125 hazard might then cause a processor deadlock. The workaround enables
1126 the L1 caching of the NEON accesses and disables the PLD instruction
1127 in the ACTLR register. Note that setting specific bits in the ACTLR
1128 register may not be available in non-secure mode.
1129
Catalin Marinas0516e462009-04-30 17:06:20 +01001130config ARM_ERRATA_460075
1131 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1132 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001133 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001134 help
1135 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1136 erratum. Any asynchronous access to the L2 cache may encounter a
1137 situation in which recent store transactions to the L2 cache are lost
1138 and overwritten with stale memory contents from external memory. The
1139 workaround disables the write-allocate mode for the L2 cache via the
1140 ACTLR register. Note that setting specific bits in the ACTLR register
1141 may not be available in non-secure mode.
1142
Will Deacon9f050272010-09-14 09:51:43 +01001143config ARM_ERRATA_742230
1144 bool "ARM errata: DMB operation may be faulty"
1145 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001146 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001147 help
1148 This option enables the workaround for the 742230 Cortex-A9
1149 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1150 between two write operations may not ensure the correct visibility
1151 ordering of the two writes. This workaround sets a specific bit in
1152 the diagnostic register of the Cortex-A9 which causes the DMB
1153 instruction to behave as a DSB, ensuring the correct behaviour of
1154 the two writes.
1155
Will Deacona672e992010-09-14 09:53:02 +01001156config ARM_ERRATA_742231
1157 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1158 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001159 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001160 help
1161 This option enables the workaround for the 742231 Cortex-A9
1162 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1163 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1164 accessing some data located in the same cache line, may get corrupted
1165 data due to bad handling of the address hazard when the line gets
1166 replaced from one of the CPUs at the same time as another CPU is
1167 accessing it. This workaround sets specific bits in the diagnostic
1168 register of the Cortex-A9 which reduces the linefill issuing
1169 capabilities of the processor.
1170
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001171config PL310_ERRATA_588369
Will Deaconfa0ce402011-11-14 17:24:57 +01001172 bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001173 depends on CACHE_L2X0
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001174 help
1175 The PL310 L2 cache controller implements three types of Clean &
1176 Invalidate maintenance operations: by Physical Address
1177 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1178 They are architecturally defined to behave as the execution of a
1179 clean operation followed immediately by an invalidate operation,
1180 both performing to the same memory location. This functionality
1181 is not correctly implemented in PL310 as clean lines are not
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001182 invalidated as a result of these operations.
Will Deaconcdf357f2010-08-05 11:20:51 +01001183
1184config ARM_ERRATA_720789
1185 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001186 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001187 help
1188 This option enables the workaround for the 720789 Cortex-A9 (prior to
1189 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1190 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1191 As a consequence of this erratum, some TLB entries which should be
1192 invalidated are not, resulting in an incoherency in the system page
1193 tables. The workaround changes the TLB flushing routines to invalidate
1194 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001195
Russell King1f0090a2011-03-16 23:35:25 +00001196config PL310_ERRATA_727915
Will Deaconfa0ce402011-11-14 17:24:57 +01001197 bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
Russell King1f0090a2011-03-16 23:35:25 +00001198 depends on CACHE_L2X0
1199 help
1200 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1201 operation (offset 0x7FC). This operation runs in background so that
1202 PL310 can handle normal accesses while it is in progress. Under very
1203 rare circumstances, due to this erratum, write data can be lost when
1204 PL310 treats a cacheable write transaction during a Clean &
1205 Invalidate by Way operation.
1206
Will Deacon475d92f2010-09-28 14:02:02 +01001207config ARM_ERRATA_743622
1208 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1209 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001210 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001211 help
1212 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001213 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001214 optimisation in the Cortex-A9 Store Buffer may lead to data
1215 corruption. This workaround sets a specific bit in the diagnostic
1216 register of the Cortex-A9 which disables the Store Buffer
1217 optimisation, preventing the defect from occurring. This has no
1218 visible impact on the overall performance or power consumption of the
1219 processor.
1220
Will Deacon9a27c272011-02-18 16:36:35 +01001221config ARM_ERRATA_751472
1222 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001223 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001224 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001225 help
1226 This option enables the workaround for the 751472 Cortex-A9 (prior
1227 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1228 completion of a following broadcasted operation if the second
1229 operation is received by a CPU before the ICIALLUIS has completed,
1230 potentially leading to corrupted entries in the cache or TLB.
1231
Will Deaconfa0ce402011-11-14 17:24:57 +01001232config PL310_ERRATA_753970
1233 bool "PL310 errata: cache sync operation may be faulty"
Srinidhi Kasagar885028e2011-02-17 07:03:51 +01001234 depends on CACHE_PL310
1235 help
1236 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1237
1238 Under some condition the effect of cache sync operation on
1239 the store buffer still remains when the operation completes.
1240 This means that the store buffer is always asked to drain and
1241 this prevents it from merging any further writes. The workaround
1242 is to replace the normal offset of cache sync operation (0x730)
1243 by another offset targeting an unmapped PL310 register 0x740.
1244 This has the same effect as the cache sync operation: store buffer
1245 drain and waiting for all buffers empty.
1246
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001247config ARM_ERRATA_754322
1248 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1249 depends on CPU_V7
1250 help
1251 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1252 r3p*) erratum. A speculative memory access may cause a page table walk
1253 which starts prior to an ASID switch but completes afterwards. This
1254 can populate the micro-TLB with a stale entry which may be hit with
1255 the new ASID. This workaround places two dsb instructions in the mm
1256 switching code so that no page table walks can cross the ASID switch.
1257
Will Deacon5dab26af2011-03-04 12:38:54 +01001258config ARM_ERRATA_754327
1259 bool "ARM errata: no automatic Store Buffer drain"
1260 depends on CPU_V7 && SMP
1261 help
1262 This option enables the workaround for the 754327 Cortex-A9 (prior to
1263 r2p0) erratum. The Store Buffer does not have any automatic draining
1264 mechanism and therefore a livelock may occur if an external agent
1265 continuously polls a memory location waiting to observe an update.
1266 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1267 written polling loops from denying visibility of updates to memory.
1268
Catalin Marinas145e10e2011-08-15 11:04:41 +01001269config ARM_ERRATA_364296
1270 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1271 depends on CPU_V6 && !SMP
1272 help
1273 This options enables the workaround for the 364296 ARM1136
1274 r0p2 erratum (possible cache data corruption with
1275 hit-under-miss enabled). It sets the undocumented bit 31 in
1276 the auxiliary control register and the FI bit in the control
1277 register, thus disabling hit-under-miss without putting the
1278 processor into full low interrupt latency mode. ARM11MPCore
1279 is not affected.
1280
Will Deaconf630c1b2011-09-15 11:45:15 +01001281config ARM_ERRATA_764369
1282 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1283 depends on CPU_V7 && SMP
1284 help
1285 This option enables the workaround for erratum 764369
1286 affecting Cortex-A9 MPCore with two or more processors (all
1287 current revisions). Under certain timing circumstances, a data
1288 cache line maintenance operation by MVA targeting an Inner
1289 Shareable memory region may fail to proceed up to either the
1290 Point of Coherency or to the Point of Unification of the
1291 system. This workaround adds a DSB instruction before the
1292 relevant cache maintenance functions and sets a specific bit
1293 in the diagnostic control register of the SCU.
1294
Will Deacon11ed0ba2011-11-14 17:24:58 +01001295config PL310_ERRATA_769419
1296 bool "PL310 errata: no automatic Store Buffer drain"
1297 depends on CACHE_L2X0
1298 help
1299 On revisions of the PL310 prior to r3p2, the Store Buffer does
1300 not automatically drain. This can cause normal, non-cacheable
1301 writes to be retained when the memory system is idle, leading
1302 to suboptimal I/O performance for drivers using coherent DMA.
1303 This option adds a write barrier to the cpu_idle loop so that,
1304 on systems with an outer cache, the store buffer is drained
1305 explicitly.
1306
Simon Horman7253b852012-09-28 02:12:45 +01001307config ARM_ERRATA_775420
1308 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1309 depends on CPU_V7
1310 help
1311 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1312 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1313 operation aborts with MMU exception, it might cause the processor
1314 to deadlock. This workaround puts DSB before executing ISB if
1315 an abort may occur on cache maintenance.
1316
Catalin Marinas93dc6882013-03-26 23:35:04 +01001317config ARM_ERRATA_798181
1318 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1319 depends on CPU_V7 && SMP
1320 help
1321 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1322 adequately shooting down all use of the old entries. This
1323 option enables the Linux kernel workaround for this erratum
1324 which sends an IPI to the CPUs that are running the same ASID
1325 as the one being invalidated.
1326
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327endmenu
1328
1329source "arch/arm/common/Kconfig"
1330
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331menu "Bus support"
1332
1333config ARM_AMBA
1334 bool
1335
1336config ISA
1337 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338 help
1339 Find out whether you have ISA slots on your motherboard. ISA is the
1340 name of a bus system, i.e. the way the CPU talks to the other stuff
1341 inside your box. Other bus systems are PCI, EISA, MicroChannel
1342 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1343 newer boards don't support it. If you have ISA, say Y, otherwise N.
1344
Russell King065909b2006-01-04 15:44:16 +00001345# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346config ISA_DMA
1347 bool
Russell King065909b2006-01-04 15:44:16 +00001348 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349
Russell King065909b2006-01-04 15:44:16 +00001350# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001351config ISA_DMA_API
1352 bool
Al Viro5cae8412005-05-04 05:39:22 +01001353
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001355 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 help
1357 Find out whether you have a PCI motherboard. PCI is the name of a
1358 bus system, i.e. the way the CPU talks to the other stuff inside
1359 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1360 VESA. If you have PCI, say Y, otherwise N.
1361
Anton Vorontsov52882172010-04-19 13:20:49 +01001362config PCI_DOMAINS
1363 bool
1364 depends on PCI
1365
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001366config PCI_NANOENGINE
1367 bool "BSE nanoEngine PCI support"
1368 depends on SA1100_NANOENGINE
1369 help
1370 Enable PCI on the BSE nanoEngine board.
1371
Matthew Wilcox36e23592007-07-10 10:54:40 -06001372config PCI_SYSCALL
1373 def_bool PCI
1374
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375# Select the host bridge type
1376config PCI_HOST_VIA82C505
1377 bool
1378 depends on PCI && ARCH_SHARK
1379 default y
1380
Mike Rapoporta0113a92007-11-25 08:55:34 +01001381config PCI_HOST_ITE8152
1382 bool
1383 depends on PCI && MACH_ARMCORE
1384 default y
1385 select DMABOUNCE
1386
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387source "drivers/pci/Kconfig"
1388
1389source "drivers/pcmcia/Kconfig"
1390
1391endmenu
1392
1393menu "Kernel Features"
1394
Dave Martin3b556582011-12-07 15:38:04 +00001395config HAVE_SMP
1396 bool
1397 help
1398 This option should be selected by machines which have an SMP-
1399 capable CPU.
1400
1401 The only effect of this option is to make the SMP-related
1402 options available to the user for configuration.
1403
Linus Torvalds1da177e2005-04-16 15:20:36 -07001404config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001405 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001406 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001407 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001408 depends on HAVE_SMP
Arnd Bergmann9934ebb2011-06-10 14:05:22 +00001409 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +01001410 select USE_GENERIC_SMP_HELPERS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 help
1412 This enables support for systems with more than one CPU. If you have
1413 a system with only one CPU, like most personal computers, say N. If
1414 you have a system with more than one CPU, say Y.
1415
1416 If you say N here, the kernel will run on single and multiprocessor
1417 machines, but will use only one CPU of a multiprocessor machine. If
1418 you say Y here, the kernel will run on many, but not all, single
1419 processor machines. On a single processor machine, the kernel will
1420 run faster if you say N here.
1421
Paul Bolle395cf962011-08-15 02:02:26 +02001422 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001424 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425
1426 If you don't know what to do here, say N.
1427
Russell Kingf00ec482010-09-04 10:47:48 +01001428config SMP_ON_UP
1429 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Nicolas Pitre4d2692a2011-01-14 07:33:24 +01001430 depends on SMP && !XIP_KERNEL
Russell Kingf00ec482010-09-04 10:47:48 +01001431 default y
1432 help
1433 SMP kernels contain instructions which fail on non-SMP processors.
1434 Enabling this option allows the kernel to modify itself to make
1435 these instructions safe. Disabling it allows about 1K of space
1436 savings.
1437
1438 If you don't know what to do here, say Y.
1439
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001440config ARM_CPU_TOPOLOGY
1441 bool "Support cpu topology definition"
1442 depends on SMP && CPU_V7
1443 default y
1444 help
1445 Support ARM cpu topology definition. The MPIDR register defines
1446 affinity between processors which is then used to describe the cpu
1447 topology of an ARM System.
1448
1449config SCHED_MC
1450 bool "Multi-core scheduler support"
1451 depends on ARM_CPU_TOPOLOGY
1452 help
1453 Multi-core scheduler support improves the CPU scheduler's decision
1454 making when dealing with multi-core CPU chips at a cost of slightly
1455 increased overhead in some places. If unsure say N here.
1456
1457config SCHED_SMT
1458 bool "SMT scheduler support"
1459 depends on ARM_CPU_TOPOLOGY
1460 help
1461 Improves the CPU scheduler's decision making when dealing with
1462 MultiThreading at a cost of slightly increased overhead in some
1463 places. If unsure say N here.
1464
Russell Kinga8cbcd92009-05-16 11:51:14 +01001465config HAVE_ARM_SCU
1466 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001467 help
1468 This option enables support for the ARM system coherency unit
1469
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001470config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001471 bool "Architected timer support"
1472 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001473 select ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001474 help
1475 This option enables support for the ARM architected timer
1476
Russell Kingf32f4ce2009-05-16 12:14:21 +01001477config HAVE_ARM_TWD
1478 bool
1479 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001480 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001481 help
1482 This options enables support for the ARM timer and watchdog unit
1483
Nicolas Pitree8db2882012-04-12 02:45:22 -04001484config MCPM
1485 bool "Multi-Cluster Power Management"
1486 depends on CPU_V7 && SMP
1487 help
1488 This option provides the common power management infrastructure
1489 for (multi-)cluster based systems, such as big.LITTLE based
1490 systems.
1491
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001492choice
1493 prompt "Memory split"
1494 default VMSPLIT_3G
1495 help
1496 Select the desired split between kernel and user memory.
1497
1498 If you are not absolutely sure what you are doing, leave this
1499 option alone!
1500
1501 config VMSPLIT_3G
1502 bool "3G/1G user/kernel split"
1503 config VMSPLIT_2G
1504 bool "2G/2G user/kernel split"
1505 config VMSPLIT_1G
1506 bool "1G/3G user/kernel split"
1507endchoice
1508
1509config PAGE_OFFSET
1510 hex
1511 default 0x40000000 if VMSPLIT_1G
1512 default 0x80000000 if VMSPLIT_2G
1513 default 0xC0000000
1514
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515config NR_CPUS
1516 int "Maximum number of CPUs (2-32)"
1517 range 2 32
1518 depends on SMP
1519 default "4"
1520
Russell Kinga054a812005-11-02 22:24:33 +00001521config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001522 bool "Support for hot-pluggable CPUs"
1523 depends on SMP && HOTPLUG
Russell Kinga054a812005-11-02 22:24:33 +00001524 help
1525 Say Y here to experiment with turning CPUs off and on. CPUs
1526 can be controlled through /sys/devices/system/cpu.
1527
Will Deacon2bdd4242012-12-12 19:20:52 +00001528config ARM_PSCI
1529 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1530 depends on CPU_V7
1531 help
1532 Say Y here if you want Linux to communicate with system firmware
1533 implementing the PSCI specification for CPU-centric power
1534 management operations described in ARM document number ARM DEN
1535 0022A ("Power State Coordination Interface System Software on
1536 ARM processors").
1537
Russell King37ee16a2005-11-08 19:08:05 +00001538config LOCAL_TIMERS
1539 bool "Use local timer interrupts"
Russell King971acb92010-09-04 08:16:30 +01001540 depends on SMP
Russell King37ee16a2005-11-08 19:08:05 +00001541 default y
1542 help
1543 Enable support for local timers on SMP platforms, rather then the
1544 legacy IPI broadcast method. Local timers allows the system
1545 accounting to be spread across the timer interval, preventing a
1546 "thundering herd" at every timer tick.
1547
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001548# The GPIO number here must be sorted by descending number. In case of
1549# a multiplatform kernel, we just want the highest value required by the
1550# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001551config ARCH_NR_GPIO
1552 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001553 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tarun Kanti DebBarma39f47d92012-04-26 18:31:17 +05301554 default 512 if SOC_OMAP5
Olof Johansson06b851e2013-04-02 18:33:58 -07001555 default 392 if ARCH_U8500
Maxime Riparde590b912013-01-26 15:36:51 +01001556 default 288 if ARCH_VT8500 || ARCH_SUNXI
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001557 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001558 default 0
1559 help
1560 Maximum number of GPIOs in the system.
1561
1562 If unsure, leave the default value.
1563
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001564source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565
Russell Kingf8065812006-03-02 22:41:59 +00001566config HZ
1567 int
Kukjin Kimb130d5c2012-02-03 14:29:23 +09001568 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001569 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001570 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001571 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingf8065812006-03-02 22:41:59 +00001572 default 100
1573
Russell Kingb28748f2013-02-17 14:40:33 +00001574config SCHED_HRTICK
1575 def_bool HIGH_RES_TIMERS
1576
Catalin Marinas16c79652009-07-24 12:33:02 +01001577config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001578 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Russell King00b7ded2012-10-22 22:54:30 +01001579 depends on CPU_V7 && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001580 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001581 select AEABI
1582 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001583 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001584 help
1585 By enabling this option, the kernel will be compiled in
1586 Thumb-2 mode. A compiler/assembler that understand the unified
1587 ARM-Thumb syntax is needed.
1588
1589 If unsure, say N.
1590
Dave Martin6f685c52011-03-03 11:41:12 +01001591config THUMB2_AVOID_R_ARM_THM_JUMP11
1592 bool "Work around buggy Thumb-2 short branch relocations in gas"
1593 depends on THUMB2_KERNEL && MODULES
1594 default y
1595 help
1596 Various binutils versions can resolve Thumb-2 branches to
1597 locally-defined, preemptible global symbols as short-range "b.n"
1598 branch instructions.
1599
1600 This is a problem, because there's no guarantee the final
1601 destination of the symbol, or any candidate locations for a
1602 trampoline, are within range of the branch. For this reason, the
1603 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1604 relocation in modules at all, and it makes little sense to add
1605 support.
1606
1607 The symptom is that the kernel fails with an "unsupported
1608 relocation" error when loading some modules.
1609
1610 Until fixed tools are available, passing
1611 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1612 code which hits this problem, at the cost of a bit of extra runtime
1613 stack usage in some cases.
1614
1615 The problem is described in more detail at:
1616 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1617
1618 Only Thumb-2 kernels are affected.
1619
1620 Unless you are sure your tools don't have this problem, say Y.
1621
Catalin Marinas0becb082009-07-24 12:32:53 +01001622config ARM_ASM_UNIFIED
1623 bool
1624
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001625config AEABI
1626 bool "Use the ARM EABI to compile the kernel"
1627 help
1628 This option allows for the kernel to be compiled using the latest
1629 ARM ABI (aka EABI). This is only useful if you are using a user
1630 space environment that is also compiled with EABI.
1631
1632 Since there are major incompatibilities between the legacy ABI and
1633 EABI, especially with regard to structure member alignment, this
1634 option also changes the kernel syscall calling convention to
1635 disambiguate both ABIs and allow for backward compatibility support
1636 (selected with CONFIG_OABI_COMPAT).
1637
1638 To use this you need GCC version 4.0.0 or later.
1639
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001640config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001641 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001642 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001643 default y
1644 help
1645 This option preserves the old syscall interface along with the
1646 new (ARM EABI) one. It also provides a compatibility layer to
1647 intercept syscalls that have structure arguments which layout
1648 in memory differs between the legacy ABI and the new ARM EABI
1649 (only for non "thumb" binaries). This option adds a tiny
1650 overhead to all syscalls and produces a slightly larger kernel.
1651 If you know you'll be using only pure EABI user space then you
1652 can say N here. If this option is not selected and you attempt
1653 to execute a legacy ABI binary then the result will be
1654 UNPREDICTABLE (in fact it can be predicted that it won't work
1655 at all). If in doubt say Y.
1656
Mel Gormaneb335752009-05-13 17:34:48 +01001657config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001658 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001659
Russell King05944d72006-11-30 20:43:51 +00001660config ARCH_SPARSEMEM_ENABLE
1661 bool
1662
Russell King07a2f732008-10-01 21:39:58 +01001663config ARCH_SPARSEMEM_DEFAULT
1664 def_bool ARCH_SPARSEMEM_ENABLE
1665
Russell King05944d72006-11-30 20:43:51 +00001666config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001667 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001668
Will Deacon7b7bf492011-05-19 13:21:14 +01001669config HAVE_ARCH_PFN_VALID
1670 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1671
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001672config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001673 bool "High Memory Support"
1674 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001675 help
1676 The address space of ARM processors is only 4 Gigabytes large
1677 and it has to accommodate user address space, kernel address
1678 space as well as some memory mapped IO. That means that, if you
1679 have a large amount of physical memory and/or IO, not all of the
1680 memory can be "permanently mapped" by the kernel. The physical
1681 memory that is not permanently mapped is called "high memory".
1682
1683 Depending on the selected kernel/user memory split, minimum
1684 vmalloc space and actual amount of RAM, you may not need this
1685 option which should result in a slightly faster kernel.
1686
1687 If unsure, say n.
1688
Russell King65cec8e2009-08-17 20:02:06 +01001689config HIGHPTE
1690 bool "Allocate 2nd-level pagetables from highmem"
1691 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001692
Jamie Iles1b8873a2010-02-02 20:25:44 +01001693config HW_PERF_EVENTS
1694 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001695 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001696 default y
1697 help
1698 Enable hardware performance counter support for perf events. If
1699 disabled, perf events will use software events only.
1700
Dave Hansen3f22ab22005-06-23 00:07:43 -07001701source "mm/Kconfig"
1702
Magnus Dammc1b2d972010-07-05 10:00:11 +01001703config FORCE_MAX_ZONEORDER
1704 int "Maximum zone order" if ARCH_SHMOBILE
1705 range 11 64 if ARCH_SHMOBILE
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001706 default "12" if SOC_AM33XX
Magnus Dammc1b2d972010-07-05 10:00:11 +01001707 default "9" if SA1111
1708 default "11"
1709 help
1710 The kernel memory allocator divides physically contiguous memory
1711 blocks into "zones", where each zone is a power of two number of
1712 pages. This option selects the largest power of two that the kernel
1713 keeps in the memory allocator. If you need to allocate very large
1714 blocks of physically contiguous memory, then you may need to
1715 increase this value.
1716
1717 This config option is actually maximum order plus one. For example,
1718 a value of 11 means that the largest free memory block is 2^10 pages.
1719
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720config ALIGNMENT_TRAP
1721 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001722 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001724 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001725 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001726 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001727 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1728 address divisible by 4. On 32-bit ARM processors, these non-aligned
1729 fetch/store instructions will be emulated in software if you say
1730 here, which has a severe performance impact. This is necessary for
1731 correct operation of some network protocols. With an IP-only
1732 configuration it is safe to say N, otherwise say Y.
1733
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001734config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001735 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1736 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001737 default y if CPU_FEROCEON
1738 help
1739 Implement faster copy_to_user and clear_user methods for CPU
1740 cores where a 8-word STM instruction give significantly higher
1741 memory write throughput than a sequence of individual 32bit stores.
1742
1743 A possible side effect is a slight increase in scheduling latency
1744 between threads sharing the same address space if they invoke
1745 such copy operations with large buffers.
1746
1747 However, if the CPU data cache is using a write-allocate mode,
1748 this option is unlikely to provide any performance gain.
1749
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001750config SECCOMP
1751 bool
1752 prompt "Enable seccomp to safely compute untrusted bytecode"
1753 ---help---
1754 This kernel feature is useful for number crunching applications
1755 that may need to compute untrusted bytecode during their
1756 execution. By using pipes or other transports made available to
1757 the process as file descriptors supporting the read/write
1758 syscalls, it's possible to isolate those applications in
1759 their own address space using seccomp. Once seccomp is
1760 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1761 and the task is only allowed to execute a few safe syscalls
1762 defined by each seccomp mode.
1763
Nicolas Pitrec743f382010-05-24 23:55:42 -04001764config CC_STACKPROTECTOR
1765 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1766 help
1767 This option turns on the -fstack-protector GCC feature. This
1768 feature puts, at the beginning of functions, a canary value on
1769 the stack just before the return address, and validates
1770 the value just before actually returning. Stack based buffer
1771 overflows (that need to overwrite this return address) now also
1772 overwrite the canary, which gets detected and the attack is then
1773 neutralized via a kernel panic.
1774 This feature requires gcc version 4.2 or above.
1775
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001776config XEN_DOM0
1777 def_bool y
1778 depends on XEN
1779
1780config XEN
1781 bool "Xen guest support on ARM (EXPERIMENTAL)"
Ian Campbell85323a92013-03-07 07:17:25 +00001782 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001783 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001784 depends on !GENERIC_ATOMIC64
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001785 help
1786 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1787
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788endmenu
1789
1790menu "Boot options"
1791
Grant Likely9eb8f672011-04-28 14:27:20 -06001792config USE_OF
1793 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001794 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001795 select OF
1796 select OF_EARLY_FLATTREE
1797 help
1798 Include support for flattened device tree machine descriptions.
1799
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001800config ATAGS
1801 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1802 default y
1803 help
1804 This is the traditional way of passing data to the kernel at boot
1805 time. If you are solely relying on the flattened device tree (or
1806 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1807 to remove ATAGS support from your kernel binary. If unsure,
1808 leave this to y.
1809
1810config DEPRECATED_PARAM_STRUCT
1811 bool "Provide old way to pass kernel parameters"
1812 depends on ATAGS
1813 help
1814 This was deprecated in 2001 and announced to live on for 5 years.
1815 Some old boot loaders still use this way.
1816
Linus Torvalds1da177e2005-04-16 15:20:36 -07001817# Compressed boot loader in ROM. Yes, we really want to ask about
1818# TEXT and BSS so we preserve their values in the config files.
1819config ZBOOT_ROM_TEXT
1820 hex "Compressed ROM boot loader base address"
1821 default "0"
1822 help
1823 The physical address at which the ROM-able zImage is to be
1824 placed in the target. Platforms which normally make use of
1825 ROM-able zImage formats normally set this to a suitable
1826 value in their defconfig file.
1827
1828 If ZBOOT_ROM is not enabled, this has no effect.
1829
1830config ZBOOT_ROM_BSS
1831 hex "Compressed ROM boot loader BSS address"
1832 default "0"
1833 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001834 The base address of an area of read/write memory in the target
1835 for the ROM-able zImage which must be available while the
1836 decompressor is running. It must be large enough to hold the
1837 entire decompressed kernel plus an additional 128 KiB.
1838 Platforms which normally make use of ROM-able zImage formats
1839 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840
1841 If ZBOOT_ROM is not enabled, this has no effect.
1842
1843config ZBOOT_ROM
1844 bool "Compressed boot loader in ROM/flash"
1845 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1846 help
1847 Say Y here if you intend to execute your compressed kernel image
1848 (zImage) directly from ROM or flash. If unsure, say N.
1849
Simon Horman090ab3f2011-04-26 06:29:53 +01001850choice
1851 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001852 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001853 default ZBOOT_ROM_NONE
1854 help
1855 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001856 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001857 kernel image to an MMC or SD card and boot the kernel straight
1858 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001859 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001860 rest the kernel image to RAM.
1861
1862config ZBOOT_ROM_NONE
1863 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1864 help
1865 Do not load image from SD or MMC
1866
Simon Hormanf45b1142011-01-11 04:01:08 +01001867config ZBOOT_ROM_MMCIF
1868 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001869 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001870 Load image from MMCIF hardware block.
1871
1872config ZBOOT_ROM_SH_MOBILE_SDHI
1873 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1874 help
1875 Load image from SDHI hardware block
1876
1877endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001878
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001879config ARM_APPENDED_DTB
1880 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001881 depends on OF && !ZBOOT_ROM
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001882 help
1883 With this option, the boot code will look for a device tree binary
1884 (DTB) appended to zImage
1885 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1886
1887 This is meant as a backward compatibility convenience for those
1888 systems with a bootloader that can't be upgraded to accommodate
1889 the documented boot protocol using a device tree.
1890
1891 Beware that there is very little in terms of protection against
1892 this option being confused by leftover garbage in memory that might
1893 look like a DTB header after a reboot if no actual DTB is appended
1894 to zImage. Do not leave this option active in a production kernel
1895 if you don't intend to always append a DTB. Proper passing of the
1896 location into r2 of a bootloader provided DTB is always preferable
1897 to this option.
1898
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001899config ARM_ATAG_DTB_COMPAT
1900 bool "Supplement the appended DTB with traditional ATAG information"
1901 depends on ARM_APPENDED_DTB
1902 help
1903 Some old bootloaders can't be updated to a DTB capable one, yet
1904 they provide ATAGs with memory configuration, the ramdisk address,
1905 the kernel cmdline string, etc. Such information is dynamically
1906 provided by the bootloader and can't always be stored in a static
1907 DTB. To allow a device tree enabled kernel to be used with such
1908 bootloaders, this option allows zImage to extract the information
1909 from the ATAG list and store it at run time into the appended DTB.
1910
Genoud Richardd0f34a112012-06-26 16:37:59 +01001911choice
1912 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1913 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1914
1915config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1916 bool "Use bootloader kernel arguments if available"
1917 help
1918 Uses the command-line options passed by the boot loader instead of
1919 the device tree bootargs property. If the boot loader doesn't provide
1920 any, the device tree bootargs property will be used.
1921
1922config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1923 bool "Extend with bootloader kernel arguments"
1924 help
1925 The command-line arguments provided by the boot loader will be
1926 appended to the the device tree bootargs property.
1927
1928endchoice
1929
Linus Torvalds1da177e2005-04-16 15:20:36 -07001930config CMDLINE
1931 string "Default kernel command string"
1932 default ""
1933 help
1934 On some architectures (EBSA110 and CATS), there is currently no way
1935 for the boot loader to pass arguments to the kernel. For these
1936 architectures, you should supply some command-line options at build
1937 time by entering them here. As a minimum, you should specify the
1938 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1939
Victor Boivie4394c122011-05-04 17:07:55 +01001940choice
1941 prompt "Kernel command line type" if CMDLINE != ""
1942 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001943 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001944
1945config CMDLINE_FROM_BOOTLOADER
1946 bool "Use bootloader kernel arguments if available"
1947 help
1948 Uses the command-line options passed by the boot loader. If
1949 the boot loader doesn't provide any, the default kernel command
1950 string provided in CMDLINE will be used.
1951
1952config CMDLINE_EXTEND
1953 bool "Extend bootloader kernel arguments"
1954 help
1955 The command-line arguments provided by the boot loader will be
1956 appended to the default kernel command string.
1957
Alexander Holler92d20402010-02-16 19:04:53 +01001958config CMDLINE_FORCE
1959 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001960 help
1961 Always use the default kernel command string, even if the boot
1962 loader passes other arguments to the kernel.
1963 This is useful if you cannot or don't want to change the
1964 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001965endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001966
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967config XIP_KERNEL
1968 bool "Kernel Execute-In-Place from ROM"
Rob Herring387798b2012-09-06 13:41:12 -05001969 depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 help
1971 Execute-In-Place allows the kernel to run from non-volatile storage
1972 directly addressable by the CPU, such as NOR flash. This saves RAM
1973 space since the text section of the kernel is not loaded from flash
1974 to RAM. Read-write sections, such as the data section and stack,
1975 are still copied to RAM. The XIP kernel is not compressed since
1976 it has to run directly from flash, so it will take more space to
1977 store it. The flash address used to link the kernel object files,
1978 and for storing it, is configuration dependent. Therefore, if you
1979 say Y here, you must know the proper physical address where to
1980 store the kernel image depending on your own flash memory usage.
1981
1982 Also note that the make target becomes "make xipImage" rather than
1983 "make zImage" or "make Image". The final kernel binary to put in
1984 ROM memory will be arch/arm/boot/xipImage.
1985
1986 If unsure, say N.
1987
1988config XIP_PHYS_ADDR
1989 hex "XIP Kernel Physical Location"
1990 depends on XIP_KERNEL
1991 default "0x00080000"
1992 help
1993 This is the physical address in your flash memory the kernel will
1994 be linked for and stored to. This address is dependent on your
1995 own flash usage.
1996
Richard Purdiec587e4a2007-02-06 21:29:00 +01001997config KEXEC
1998 bool "Kexec system call (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001999 depends on (!SMP || HOTPLUG_CPU)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002000 help
2001 kexec is a system call that implements the ability to shutdown your
2002 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002003 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002004 you can start any kernel with it, not just Linux.
2005
2006 It is an ongoing process to be certain the hardware in a machine
2007 is properly shutdown, so do not be surprised if this code does not
2008 initially work for you. It may help to enable device hotplugging
2009 support.
2010
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002011config ATAGS_PROC
2012 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002013 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002014 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002015 help
2016 Should the atags used to boot the kernel be exported in an "atags"
2017 file in procfs. Useful with kexec.
2018
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002019config CRASH_DUMP
2020 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002021 help
2022 Generate crash dump after being started by kexec. This should
2023 be normally only set in special crash dump kernels which are
2024 loaded in the main kernel with kexec-tools into a specially
2025 reserved region and then later executed after a crash by
2026 kdump/kexec. The crash dump kernel must be compiled to a
2027 memory address not used by the main kernel
2028
2029 For more details see Documentation/kdump/kdump.txt
2030
Eric Miaoe69edc792010-07-05 15:56:50 +02002031config AUTO_ZRELADDR
2032 bool "Auto calculation of the decompressed kernel image address"
2033 depends on !ZBOOT_ROM && !ARCH_U300
2034 help
2035 ZRELADDR is the physical address where the decompressed kernel
2036 image will be placed. If AUTO_ZRELADDR is selected, the address
2037 will be determined at run-time by masking the current IP with
2038 0xf8000000. This assumes the zImage being placed in the first 128MB
2039 from start of memory.
2040
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041endmenu
2042
Russell Kingac9d7ef2008-08-18 17:26:00 +01002043menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044
Ben Dooks89c52ed2009-07-30 23:23:24 +01002045if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046source "drivers/cpufreq/Kconfig"
2047
Ben Dooks9d56c022009-07-30 23:23:25 +01002048config CPU_FREQ_S3C
2049 bool
2050 help
2051 Internal configuration node for common cpufreq on Samsung SoC
2052
2053config CPU_FREQ_S3C24XX
Russell King4a50bfe2010-12-05 23:06:22 +00002054 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002055 depends on ARCH_S3C24XX && CPU_FREQ
Ben Dooks9d56c022009-07-30 23:23:25 +01002056 select CPU_FREQ_S3C
2057 help
2058 This enables the CPUfreq driver for the Samsung S3C24XX family
2059 of CPUs.
2060
2061 For details, take a look at <file:Documentation/cpu-freq>.
2062
2063 If in doubt, say N.
2064
2065config CPU_FREQ_S3C24XX_PLL
Russell King4a50bfe2010-12-05 23:06:22 +00002066 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002067 depends on CPU_FREQ_S3C24XX
Ben Dooks9d56c022009-07-30 23:23:25 +01002068 help
2069 Compile in support for changing the PLL frequency from the
2070 S3C24XX series CPUfreq driver. The PLL takes time to settle
2071 after a frequency change, so by default it is not enabled.
2072
2073 This also means that the PLL tables for the selected CPU(s) will
2074 be built which may increase the size of the kernel image.
2075
2076config CPU_FREQ_S3C24XX_DEBUG
2077 bool "Debug CPUfreq Samsung driver core"
2078 depends on CPU_FREQ_S3C24XX
2079 help
2080 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
2081
2082config CPU_FREQ_S3C24XX_IODEBUG
2083 bool "Debug CPUfreq Samsung driver IO timing"
2084 depends on CPU_FREQ_S3C24XX
2085 help
2086 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
2087
Ben Dookse6d197a2009-07-30 23:23:42 +01002088config CPU_FREQ_S3C24XX_DEBUGFS
2089 bool "Export debugfs for CPUFreq"
2090 depends on CPU_FREQ_S3C24XX && DEBUG_FS
2091 help
2092 Export status information via debugfs.
2093
Linus Torvalds1da177e2005-04-16 15:20:36 -07002094endif
2095
Russell Kingac9d7ef2008-08-18 17:26:00 +01002096source "drivers/cpuidle/Kconfig"
2097
2098endmenu
2099
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100menu "Floating point emulation"
2101
2102comment "At least one emulation must be selected"
2103
2104config FPE_NWFPE
2105 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002106 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002107 ---help---
2108 Say Y to include the NWFPE floating point emulator in the kernel.
2109 This is necessary to run most binaries. Linux does not currently
2110 support floating point hardware so you need to say Y here even if
2111 your machine has an FPA or floating point co-processor podule.
2112
2113 You may say N here if you are going to load the Acorn FPEmulator
2114 early in the bootup.
2115
2116config FPE_NWFPE_XP
2117 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002118 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119 help
2120 Say Y to include 80-bit support in the kernel floating-point
2121 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2122 Note that gcc does not generate 80-bit operations by default,
2123 so in most cases this option only enlarges the size of the
2124 floating point emulator without any good reason.
2125
2126 You almost surely want to say N here.
2127
2128config FPE_FASTFPE
2129 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002130 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131 ---help---
2132 Say Y here to include the FAST floating point emulator in the kernel.
2133 This is an experimental much faster emulator which now also has full
2134 precision for the mantissa. It does not support any exceptions.
2135 It is very simple, and approximately 3-6 times faster than NWFPE.
2136
2137 It should be sufficient for most programs. It may be not suitable
2138 for scientific calculations, but you have to check this for yourself.
2139 If you do not feel you need a faster FP emulation you should better
2140 choose NWFPE.
2141
2142config VFP
2143 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002144 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002145 help
2146 Say Y to include VFP support code in the kernel. This is needed
2147 if your hardware includes a VFP unit.
2148
2149 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2150 release notes and additional status information.
2151
2152 Say N if your target does not have VFP hardware.
2153
Catalin Marinas25ebee02007-09-25 15:22:24 +01002154config VFPv3
2155 bool
2156 depends on VFP
2157 default y if CPU_V7
2158
Catalin Marinasb5872db2008-01-10 19:16:17 +01002159config NEON
2160 bool "Advanced SIMD (NEON) Extension support"
2161 depends on VFPv3 && CPU_V7
2162 help
2163 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2164 Extension.
2165
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166endmenu
2167
2168menu "Userspace binary formats"
2169
2170source "fs/Kconfig.binfmt"
2171
2172config ARTHUR
2173 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002174 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002175 help
2176 Say Y here to include the kernel code necessary if you want to run
2177 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2178 experimental; if this sounds frightening, say N and sleep in peace.
2179 You can also say M here to compile this support as a module (which
2180 will be called arthur).
2181
2182endmenu
2183
2184menu "Power management options"
2185
Russell Kingeceab4a2005-11-15 11:31:41 +00002186source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002187
Johannes Bergf4cb5702007-12-08 02:14:00 +01002188config ARCH_SUSPEND_POSSIBLE
Stephen Warren4b1082c2012-09-05 09:58:27 -06002189 depends on !ARCH_S5PC100
Russell King6a786182011-04-02 10:15:28 +01002190 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
Chao Xie3f5d0812012-05-07 11:23:58 +08002191 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002192 def_bool y
2193
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002194config ARM_CPU_SUSPEND
2195 def_bool PM_SLEEP
2196
Linus Torvalds1da177e2005-04-16 15:20:36 -07002197endmenu
2198
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002199source "net/Kconfig"
2200
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002201source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002202
2203source "fs/Kconfig"
2204
Linus Torvalds1da177e2005-04-16 15:20:36 -07002205source "arch/arm/Kconfig.debug"
2206
2207source "security/Kconfig"
2208
2209source "crypto/Kconfig"
2210
2211source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002212
2213source "arch/arm/kvm/Kconfig"