blob: 32506dfa5e73fcbe4d16cd439754451d65079a76 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Russell Kingb1b3f492012-10-06 17:12:25 +01004 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
Catalin Marinas74634492012-07-30 14:41:09 -07005 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
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
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010012 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010013 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
Stephen Boyd38ff87f2013-06-01 23:39:40 -070017 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010018 select GENERIC_SMP_IDLE_THREAD
Thomas Gleixnerf7b861b2013-03-21 22:49:38 +010019 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010020 select GENERIC_STRNCPY_FROM_USER
21 select GENERIC_STRNLEN_USER
22 select HARDIRQS_SW_RESEND
23 select HAVE_AOUT
Rabin Vincent09f05d82012-02-18 17:52:41 +010024 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060025 select HAVE_ARCH_KGDB
Will Drewry4095ccc2012-11-15 22:12:29 +010026 select HAVE_ARCH_SECCOMP_FILTER
Wade Farnsworth0693bf62012-04-04 16:19:47 +010027 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010028 select HAVE_BPF_JIT
29 select HAVE_C_RECORDMCOUNT
30 select HAVE_DEBUG_KMEMLEAK
31 select HAVE_DMA_API_DEBUG
32 select HAVE_DMA_ATTRS
33 select HAVE_DMA_CONTIGUOUS if MMU
34 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
35 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
36 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
37 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
38 select HAVE_GENERIC_DMA_COHERENT
39 select HAVE_GENERIC_HARDIRQS
40 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
41 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010042 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010043 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070044 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010045 select HAVE_KERNEL_LZMA
46 select HAVE_KERNEL_LZO
47 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010048 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080049 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010050 select HAVE_MEMBLOCK
51 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Jamie Iles7ada1892010-02-02 20:24:58 +010052 select HAVE_PERF_EVENTS
Will Deacone513f8b2010-06-25 12:24:53 +010053 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010054 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070055 select HAVE_UID16
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010056 select IRQ_FORCED_THREADING
Anna-Maria Gleixner3d92a712012-05-18 16:45:44 +000057 select KTIME_SCALAR
Russell Kingb1b3f492012-10-06 17:12:25 +010058 select PERF_USE_VMALLOC
59 select RTC_LIB
60 select SYS_SUPPORTS_APM_EMULATION
David Howells786d35d2012-09-28 14:31:03 +093061 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
62 select MODULES_USE_ELF_REL
Al Viro38a61b62012-10-21 15:54:27 -040063 select CLONE_BACKWARDS
Al Virob68fec22012-12-25 16:29:48 -050064 select OLD_SIGSUSPEND3
Al Viro50bcb7e2012-12-25 19:32:07 -050065 select OLD_SIGACTION
Kevin Hilmanb0088482013-03-28 22:54:40 +010066 select HAVE_CONTEXT_TRACKING
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 help
68 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000069 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000071 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 Europe. There is an ARM Linux project with a web page at
73 <http://www.arm.linux.org.uk/>.
74
Russell King74facff2011-06-02 11:16:22 +010075config ARM_HAS_SG_CHAIN
76 bool
77
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020078config NEED_SG_DMA_LENGTH
79 bool
80
81config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020082 bool
Russell Kingb1b3f492012-10-06 17:12:25 +010083 select ARM_HAS_SG_CHAIN
84 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020085
Seung-Woo Kim60460ab2013-02-06 13:21:14 +090086if ARM_DMA_USE_IOMMU
87
88config ARM_DMA_IOMMU_ALIGNMENT
89 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
90 range 4 9
91 default 8
92 help
93 DMA mapping framework by default aligns all buffers to the smallest
94 PAGE_SIZE order which is greater than or equal to the requested buffer
95 size. This works well for buffers up to a few hundreds kilobytes, but
96 for larger buffers it just a waste of address space. Drivers which has
97 relatively small addressing window (like 64Mib) might run out of
98 virtual space with just a few allocations.
99
100 With this parameter you can specify the maximum PAGE_SIZE order for
101 DMA IOMMU buffers. Larger buffers will be aligned only to this
102 specified order. The order is expressed as a power of two multiplied
103 by the PAGE_SIZE.
104
105endif
106
Russell King1a189b92008-04-13 21:41:55 +0100107config HAVE_PWM
108 bool
109
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100110config MIGHT_HAVE_PCI
111 bool
112
Ralf Baechle75e71532007-02-09 17:08:58 +0000113config SYS_SUPPORTS_APM_EMULATION
114 bool
115
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
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100181config ARCH_HAS_BANDGAP
182 bool
183
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800184config GENERIC_HWEIGHT
185 bool
186 default y
187
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188config GENERIC_CALIBRATE_DELAY
189 bool
190 default y
191
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100192config ARCH_MAY_HAVE_PC_FDC
193 bool
194
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800195config ZONE_DMA
196 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800197
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800198config NEED_DMA_MAP_STATE
199 def_bool y
200
Rob Herring58af4a22012-03-20 14:33:01 -0500201config ARCH_HAS_DMA_SET_COHERENT_MASK
202 bool
203
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204config GENERIC_ISA_DMA
205 bool
206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207config FIQ
208 bool
209
Rob Herring13a50452012-02-07 09:28:22 -0600210config NEED_RET_TO_USER
211 bool
212
Al Viro034d2f52005-12-19 16:27:59 -0500213config ARCH_MTD_XIP
214 bool
215
Hyok S. Choic760fc12006-03-27 15:18:50 +0100216config VECTORS_BASE
217 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900218 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100219 default DRAM_BASE if REMAP_VECTORS_TO_RAM
220 default 0x00000000
221 help
222 The base address of exception vectors.
223
Russell Kingdc21af92011-01-04 19:09:43 +0000224config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100225 bool "Patch physical to virtual translations at runtime" if EMBEDDED
226 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100227 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000228 depends on !ARCH_REALVIEW || !SPARSEMEM
229 help
Russell King111e9a52011-05-12 10:02:42 +0100230 Patch phys-to-virt and virt-to-phys translation functions at
231 boot and module load time according to the position of the
232 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000233
Russell King111e9a52011-05-12 10:02:42 +0100234 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100235 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000236
Russell Kingc1beced2011-08-10 10:23:45 +0100237 Only disable this option if you know that you do not require
238 this feature (eg, building a kernel for a single machine) and
239 you need to shrink the kernel to the minimal size.
240
Rob Herring01464222012-08-28 13:06:41 -0500241config NEED_MACH_GPIO_H
242 bool
243 help
244 Select this when mach/gpio.h is required to provide special
245 definitions for this platform. The need for mach/gpio.h should
246 be avoided when possible.
247
Rob Herringc334bc12012-03-04 22:03:33 -0600248config NEED_MACH_IO_H
249 bool
250 help
251 Select this when mach/io.h is required to provide special
252 definitions for this platform. The need for mach/io.h should
253 be avoided when possible.
254
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400255config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400256 bool
Russell King111e9a52011-05-12 10:02:42 +0100257 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400258 Select this when mach/memory.h is required to provide special
259 definitions for this platform. The need for mach/memory.h should
260 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400261
262config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100263 hex "Physical address of main memory" if MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400264 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
Nicolas Pitre974c0722011-12-02 23:09:42 +0100265 default DRAM_BASE if !MMU
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400266 help
267 Please provide the physical address corresponding to the
268 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000269
Simon Glass87e040b2011-08-16 23:44:26 +0100270config GENERIC_BUG
271 def_bool y
272 depends on BUG
273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274source "init/Kconfig"
275
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700276source "kernel/Kconfig.freezer"
277
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278menu "System Type"
279
Hyok S. Choi3c427972009-07-24 12:35:00 +0100280config MMU
281 bool "MMU-based Paged Memory Management Support"
282 default y
283 help
284 Select if you want MMU-based virtualised addressing space
285 support by paged memory management. If unsure, say 'Y'.
286
Russell Kingccf50e22010-03-15 19:03:06 +0000287#
288# The "ARM system type" choice list is ordered alphabetically by option
289# text. Please add new entries in the option alphabetic order.
290#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291choice
292 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100293 default ARCH_VERSATILE if !MMU
294 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
Rob Herring387798b2012-09-06 13:41:12 -0500296config ARCH_MULTIPLATFORM
297 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100298 depends on MMU
Rob Herring387798b2012-09-06 13:41:12 -0500299 select ARM_PATCH_PHYS_VIRT
300 select AUTO_ZRELADDR
Dinh Nguyen66314222012-07-18 16:07:18 -0600301 select COMMON_CLK
Rob Herring387798b2012-09-06 13:41:12 -0500302 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600303 select SPARSE_IRQ
304 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600305
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100306config ARCH_INTEGRATOR
307 bool "ARM Ltd. Integrator family"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100308 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100309 select ARM_AMBA
Linus Walleija6131632012-06-11 17:33:12 +0200310 select COMMON_CLK
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200311 select COMMON_CLK_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100312 select GENERIC_CLOCKEVENTS
Linus Walleij9904f792011-12-09 10:29:23 +0100313 select HAVE_TCM
Russell Kingc5a0adb2010-01-16 20:16:10 +0000314 select ICST
Russell Kingb1b3f492012-10-06 17:12:25 +0100315 select MULTI_IRQ_HANDLER
316 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000317 select PLAT_VERSATILE
Linus Walleij695436e2012-02-26 10:46:48 +0100318 select SPARSE_IRQ
Linus Walleij2389d502012-10-31 22:04:31 +0100319 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100320 help
321 Support for ARM's Integrator platform.
322
323config ARCH_REALVIEW
324 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100325 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100326 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100327 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200328 select COMMON_CLK
329 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100330 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100331 select GPIO_PL061 if GPIOLIB
332 select ICST
333 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000334 select PLAT_VERSATILE
Russell King3cb5ee42011-01-18 20:13:20 +0000335 select PLAT_VERSATILE_CLCD
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100336 help
337 This enables support for ARM Ltd RealView boards.
338
339config ARCH_VERSATILE
340 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100341 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100342 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100343 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100344 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100345 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100346 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900347 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000348 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000349 select PLAT_VERSATILE
Russell King3414ba82011-01-18 20:12:10 +0000350 select PLAT_VERSATILE_CLCD
Russell Kingb1b3f492012-10-06 17:12:25 +0100351 select PLAT_VERSATILE_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100352 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100353 help
354 This enables support for ARM Ltd Versatile board.
355
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100356config ARCH_AT91
357 bool "Atmel AT91"
Ryan Mallonf373e8c2009-02-10 21:02:08 +0100358 select ARCH_REQUIRE_GPIOLIB
Jean-Christophe PLAGNIOL-VILLARDbd602992011-02-02 07:27:07 +0100359 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100360 select HAVE_CLK
Nicolas Ferree2615012011-11-22 22:26:09 +0100361 select IRQ_DOMAIN
Rob Herring01464222012-08-28 13:06:41 -0500362 select NEED_MACH_GPIO_H
Rob Herring1ac02d72012-04-04 17:48:04 -0500363 select NEED_MACH_IO_H if PCCARD
Jean-Christophe PLAGNIOL-VILLARD6732ae52012-07-12 23:35:02 +0800364 select PINCTRL
365 select PINCTRL_AT91 if USE_OF
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100366 help
Nicolas Ferre929e9942012-03-15 12:21:12 +0100367 This enables support for systems based on Atmel
368 AT91RM9200 and AT91SAM9* processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100369
Russell King93e22562012-10-12 14:20:52 +0100370config ARCH_CLPS711X
371 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400372 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400373 select AUTO_ZRELADDR
Russell King93e22562012-10-12 14:20:52 +0100374 select CLKDEV_LOOKUP
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400375 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100376 select COMMON_CLK
377 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400378 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400379 select MFD_SYSCON
Alexander Shiyan99f04c82012-11-17 17:57:14 +0400380 select MULTI_IRQ_HANDLER
Alexander Shiyan0d8be812012-11-17 17:57:13 +0400381 select SPARSE_IRQ
Russell King93e22562012-10-12 14:20:52 +0100382 help
383 Support for Cirrus Logic 711x/721x/731x based boards.
384
Russell King788c9702009-04-26 14:21:59 +0100385config ARCH_GEMINI
386 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100387 select ARCH_REQUIRE_GPIOLIB
John Stultz5cfc8ee2010-03-24 00:22:36 +0000388 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmann662146b2013-01-04 13:38:03 +0000389 select NEED_MACH_GPIO_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100390 select CPU_FA526
Russell King788c9702009-04-26 14:21:59 +0100391 help
392 Support for the Cortina Systems Gemini family SoCs
393
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394config ARCH_EBSA110
395 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100396 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000397 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100398 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600399 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400400 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100401 select NO_IOPORT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 help
403 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000404 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 Ethernet interface, two PCMCIA sockets, two serial ports and a
406 parallel port.
407
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000408config ARCH_EP93XX
409 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100410 select ARCH_HAS_HOLES_MEMORYMODEL
411 select ARCH_REQUIRE_GPIOLIB
412 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000413 select ARM_AMBA
414 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100415 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100416 select CPU_ARM920T
Arnd Bergmann5725aea2011-10-31 23:11:46 +0100417 select NEED_MACH_MEMORY_H
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000418 help
419 This enables support for the Cirrus EP93xx series of CPUs.
420
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421config ARCH_FOOTBRIDGE
422 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000423 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000425 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200426 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600427 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400428 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000429 help
430 Support for systems based on the DC21285 companion chip
431 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100433config ARCH_NETX
434 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100435 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100436 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000437 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100438 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000439 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100440 This enables support for systems based on the Hilscher NetX Soc
441
Russell King3b938be2007-05-12 11:25:44 +0100442config ARCH_IOP13XX
443 bool "IOP13xx-based"
444 depends on MMU
Russell King3b938be2007-05-12 11:25:44 +0100445 select ARCH_SUPPORTS_MSI
Russell Kingb1b3f492012-10-06 17:12:25 +0100446 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400447 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600448 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100449 select PCI
450 select PLAT_IOP
451 select VMSPLIT_1G
Russell King3b938be2007-05-12 11:25:44 +0100452 help
453 Support for Intel's IOP13XX (XScale) family of processors.
454
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100455config ARCH_IOP32X
456 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100457 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100458 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000459 select CPU_XSCALE
Rob Herring01464222012-08-28 13:06:41 -0500460 select NEED_MACH_GPIO_H
Rob Herring13a50452012-02-07 09:28:22 -0600461 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100462 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100463 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000464 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100465 Support for Intel's 80219 and IOP32X (XScale) family of
466 processors.
467
468config ARCH_IOP33X
469 bool "IOP33x-based"
470 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100471 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000472 select CPU_XSCALE
Rob Herring01464222012-08-28 13:06:41 -0500473 select NEED_MACH_GPIO_H
Rob Herring13a50452012-02-07 09:28:22 -0600474 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100475 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100476 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100477 help
478 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479
Russell King3b938be2007-05-12 11:25:44 +0100480config ARCH_IXP4XX
481 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100482 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500483 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100484 select ARCH_REQUIRE_GPIOLIB
Russell King234b6ced2011-05-08 14:09:47 +0100485 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000486 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100487 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100488 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100489 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600490 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200491 select USB_EHCI_BIG_ENDIAN_MMIO
492 select USB_EHCI_BIG_ENDIAN_DESC
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100493 help
Russell King3b938be2007-05-12 11:25:44 +0100494 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100495
Saeed Bisharaedabd382009-08-06 15:12:43 +0300496config ARCH_DOVE
497 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300498 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100499 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300500 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100501 select MIGHT_HAVE_PCI
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100502 select PINCTRL
503 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200504 select PLAT_ORION_LEGACY
Russell King0f81bd42012-09-09 20:34:13 +0100505 select USB_ARCH_HAS_EHCI
Thomas Petazzoni7d554902013-03-21 17:59:17 +0100506 select MVEBU_MBUS
Saeed Bisharaedabd382009-08-06 15:12:43 +0300507 help
508 Support for the Marvell Dove SoC 88AP510
509
Saeed Bishara651c74c2008-06-22 22:45:06 +0200510config ARCH_KIRKWOOD
511 bool "Marvell Kirkwood"
Andrew Lunn0e2ee0c2013-01-27 11:07:23 +0100512 select ARCH_HAS_CPUFREQ
Erik Benadaa8865652009-05-28 17:08:55 -0700513 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100514 select CPU_FEROCEON
Saeed Bishara651c74c2008-06-22 22:45:06 +0200515 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100516 select PCI
Jason Gunthorpe1dc831b2012-11-21 00:19:06 -0700517 select PCI_QUIRKS
Andrew Lunnf9e75922012-11-17 17:00:44 +0100518 select PINCTRL
519 select PINCTRL_KIRKWOOD
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200520 select PLAT_ORION_LEGACY
Thomas Petazzoni5cc06732013-03-21 17:59:16 +0100521 select MVEBU_MBUS
Saeed Bishara651c74c2008-06-22 22:45:06 +0200522 help
523 Support for the following Marvell Kirkwood series SoCs:
524 88F6180, 88F6192 and 88F6281.
525
Russell King788c9702009-04-26 14:21:59 +0100526config ARCH_MV78XX0
527 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700528 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100529 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100530 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100531 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200532 select PLAT_ORION_LEGACY
Thomas Petazzoni95b80e02013-03-21 17:59:19 +0100533 select MVEBU_MBUS
Russell King788c9702009-04-26 14:21:59 +0100534 help
535 Support for the following Marvell MV78xx0 series SoCs:
536 MV781x0, MV782x0.
537
538config ARCH_ORION5X
539 bool "Marvell Orion"
540 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700541 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100542 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100543 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100544 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200545 select PLAT_ORION_LEGACY
Thomas Petazzoni5d1190e2013-03-21 17:59:18 +0100546 select MVEBU_MBUS
Russell King788c9702009-04-26 14:21:59 +0100547 help
548 Support for the following Marvell Orion 5x series SoCs:
549 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
550 Orion-2 (5281), Orion-1-90 (6183).
551
552config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500553 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100554 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100555 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100556 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100557 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100558 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800559 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800560 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100561 select NEED_MACH_GPIO_H
Axel Lin7c8f86a2012-11-28 14:42:35 +0800562 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100563 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400564 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100565 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500566 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100567
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100568config ARCH_KS8695
569 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100570 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200571 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100572 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200573 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100574 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100575 help
576 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
577 System-on-Chip devices.
578
Russell King788c9702009-04-26 14:21:59 +0100579config ARCH_W90X900
580 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100581 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100582 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100583 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100584 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100585 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200586 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100587 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
588 At present, the w90x900 has been renamed nuc900, regarding
589 the ARM series product line, you can login the following
590 link address to know more.
591
592 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
593 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400594
Russell King93e22562012-10-12 14:20:52 +0100595config ARCH_LPC32XX
596 bool "NXP LPC32XX"
597 select ARCH_REQUIRE_GPIOLIB
598 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000599 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100600 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100601 select CPU_ARM926T
602 select GENERIC_CLOCKEVENTS
603 select HAVE_IDE
604 select HAVE_PWM
605 select USB_ARCH_HAS_OHCI
606 select USE_OF
607 help
608 Support for the NXP LPC32XX family of processors
609
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700611 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100612 depends on MMU
Ben Dooks89c52ed2009-07-30 23:23:24 +0100613 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100614 select ARCH_MTD_XIP
615 select ARCH_REQUIRE_GPIOLIB
616 select ARM_CPU_SUSPEND if PM
617 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100618 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100619 select CLKSRC_MMIO
Eric Miao981d0f32007-07-24 01:22:43 +0100620 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800621 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100622 select HAVE_IDE
623 select MULTI_IRQ_HANDLER
624 select NEED_MACH_GPIO_H
Eric Miaobd5ce432009-01-20 12:06:01 +0800625 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800626 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000627 help
eric miao2c8086a2007-09-11 19:13:17 -0700628 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Russell King788c9702009-04-26 14:21:59 +0100630config ARCH_MSM
631 bool "Qualcomm MSM"
Pavel Machek923a0812010-06-02 11:11:12 -0700632 select ARCH_REQUIRE_GPIOLIB
Stephen Boydbd323442011-02-23 09:37:42 -0800633 select CLKDEV_LOOKUP
Stephen Boyd8cc7f532013-06-17 10:43:19 -0700634 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100635 select GENERIC_CLOCKEVENTS
Eric Miao49cbe782009-01-20 14:15:18 +0800636 help
Daniel Walker4b53eb42010-01-01 15:11:43 -0800637 Support for Qualcomm MSM/QSD based systems. This runs on the
638 apps processor of the MSM/QSD and depends on a shared memory
639 interface to the modem processor which runs the baseband
640 stack and controls some vital subsystems
641 (clock and power control, etc).
Eric Miao49cbe782009-01-20 14:15:18 +0800642
Magnus Dammc793c1b2010-02-05 11:14:49 +0000643config ARCH_SHMOBILE
Paul Mundt6d72ad32010-11-16 16:10:20 +0900644 bool "Renesas SH-Mobile / R-Mobile"
Magnus Damm69469992013-06-10 18:46:47 +0900645 select ARM_PATCH_PHYS_VIRT
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900646 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100647 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800648 select HAVE_ARM_SCU if SMP
649 select HAVE_ARM_TWD if LOCAL_TIMERS
Russell Kingb1b3f492012-10-06 17:12:25 +0100650 select HAVE_CLK
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900651 select HAVE_MACH_CLKDEV
Dave Martin3b556582011-12-07 15:38:04 +0000652 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000653 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000654 select MULTI_IRQ_HANDLER
Russell Kingb1b3f492012-10-06 17:12:25 +0100655 select NO_IOPORT
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200656 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100657 select PM_GENERIC_DOMAINS if PM
658 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000659 help
Paul Mundt6d72ad32010-11-16 16:10:20 +0900660 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000661
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662config ARCH_RPC
663 bool "RiscPC"
664 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100665 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100666 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000667 select ARCH_USES_GETTIMEOFFSET
Russell Kingb1b3f492012-10-06 17:12:25 +0100668 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200669 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100670 select HAVE_PATA_PLATFORM
671 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600672 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400673 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100674 select NO_IOPORT
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100675 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 help
677 On the Acorn Risc-PC, Linux can support the internal IDE disk and
678 CD-ROM interface, serial and parallel port, and the floppy drive.
679
680config ARCH_SA1100
681 bool "SA1100-based"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100682 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100683 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700684 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100685 select ARCH_SPARSEMEM_ENABLE
686 select CLKDEV_LOOKUP
687 select CLKSRC_MMIO
688 select CPU_FREQ
689 select CPU_SA1100
690 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200691 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100692 select ISA
Rob Herring01464222012-08-28 13:06:41 -0500693 select NEED_MACH_GPIO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400694 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100695 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000696 help
697 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900699config ARCH_S3C24XX
700 bool "Samsung S3C24XX SoCs"
Ben Dooks9d56c022009-07-30 23:23:25 +0100701 select ARCH_HAS_CPUFREQ
Kukjin Kim53650432013-04-04 09:04:30 +0900702 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100703 select CLKDEV_LOOKUP
Romain Naour7f78b6e2013-01-09 18:47:04 -0800704 select CLKSRC_MMIO
705 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900706 select GPIO_SAMSUNG
Russell Kingb1b3f492012-10-06 17:12:25 +0100707 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900708 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900709 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100710 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900711 select MULTI_IRQ_HANDLER
Rob Herring01464222012-08-28 13:06:41 -0500712 select NEED_MACH_GPIO_H
Rob Herringc334bc12012-03-04 22:03:33 -0600713 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900714 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900716 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
717 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
718 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
719 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900720
Ben Dooksa08ab632008-10-21 14:06:39 +0100721config ARCH_S3C64XX
722 bool "Samsung S3C64XX"
Ben Dooks89c52ed2009-07-30 23:23:24 +0100723 select ARCH_HAS_CPUFREQ
Ben Dooks89f0ce72010-01-26 15:49:15 +0900724 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100725 select ARM_VIC
726 select CLKDEV_LOOKUP
Romain Naour04a49b72013-01-09 18:47:04 -0800727 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100728 select CPU_V6
Romain Naour04a49b72013-01-09 18:47:04 -0800729 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900730 select GPIO_SAMSUNG
Russell Kingb1b3f492012-10-06 17:12:25 +0100731 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900732 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900733 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100734 select HAVE_TCM
Rob Herring01464222012-08-28 13:06:41 -0500735 select NEED_MACH_GPIO_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100736 select NO_IOPORT
737 select PLAT_SAMSUNG
738 select S3C_DEV_NAND
739 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900740 select SAMSUNG_ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100741 select SAMSUNG_CLKSRC
742 select SAMSUNG_GPIOLIB_4BIT
743 select SAMSUNG_IRQ_VIC_TIMER
Tomasz Figa88f59732013-06-17 23:45:37 +0900744 select SAMSUNG_WDT_RESET
Russell Kingb1b3f492012-10-06 17:12:25 +0100745 select USB_ARCH_HAS_OHCI
Ben Dooksa08ab632008-10-21 14:06:39 +0100746 help
747 Samsung S3C64XX series based systems
748
Kukjin Kim49b7a492010-09-07 15:47:18 +0900749config ARCH_S5P64X0
750 bool "Samsung S5P6440 S5P6450"
Thomas Abrahamd8b22d22011-06-14 19:12:27 +0900751 select CLKDEV_LOOKUP
Chanwoo Choi0665ccc2011-07-18 15:07:14 +0900752 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100753 select CPU_V6
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900754 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900755 select GPIO_SAMSUNG
Russell Kingb1b3f492012-10-06 17:12:25 +0100756 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900757 select HAVE_S3C2410_I2C if I2C
Russell Kingb1b3f492012-10-06 17:12:25 +0100758 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Kukjin Kim754961a2010-11-13 16:11:46 +0900759 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500760 select NEED_MACH_GPIO_H
Tomasz Figa88f59732013-06-17 23:45:37 +0900761 select SAMSUNG_WDT_RESET
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900762 select SAMSUNG_ATAGS
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900763 help
Kukjin Kim49b7a492010-09-07 15:47:18 +0900764 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
765 SMDK6450.
Kukjin Kimc4ffccd2010-01-14 08:19:36 +0900766
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200767config ARCH_S5PC100
768 bool "Samsung S5PC100"
Kukjin Kim53650432013-04-04 09:04:30 +0900769 select ARCH_REQUIRE_GPIOLIB
Thomas Abraham29e8eb02011-06-14 19:12:27 +0900770 select CLKDEV_LOOKUP
Romain Naour6a5a2e32013-01-09 18:47:04 -0800771 select CLKSRC_MMIO
Byungho Min5a7652f2009-06-23 21:39:42 +0900772 select CPU_V7
Romain Naour6a5a2e32013-01-09 18:47:04 -0800773 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900774 select GPIO_SAMSUNG
Russell Kingb1b3f492012-10-06 17:12:25 +0100775 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900776 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900777 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100778 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500779 select NEED_MACH_GPIO_H
Tomasz Figa88f59732013-06-17 23:45:37 +0900780 select SAMSUNG_WDT_RESET
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900781 select SAMSUNG_ATAGS
Byungho Min5a7652f2009-06-23 21:39:42 +0900782 help
Marek Szyprowskiacc84702010-05-20 07:51:08 +0200783 Samsung S5PC100 series based systems
Byungho Min5a7652f2009-06-23 21:39:42 +0900784
Kukjin Kim170f4e42010-02-24 16:40:44 +0900785config ARCH_S5PV210
786 bool "Samsung S5PV210/S5PC110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100787 select ARCH_HAS_CPUFREQ
Kamil Debski0f75a962011-07-21 16:42:30 +0900788 select ARCH_HAS_HOLES_MEMORYMODEL
Russell Kingb1b3f492012-10-06 17:12:25 +0100789 select ARCH_SPARSEMEM_ENABLE
Thomas Abrahamb2a9dd42011-06-14 19:12:27 +0900790 select CLKDEV_LOOKUP
Chanwoo Choi0665ccc2011-07-18 15:07:14 +0900791 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100792 select CPU_V7
Sangbeom Kim9e65bbf2011-03-12 08:05:19 +0900793 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900794 select GPIO_SAMSUNG
Russell Kingb1b3f492012-10-06 17:12:25 +0100795 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900796 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900797 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100798 select HAVE_S3C_RTC if RTC_CLASS
Rob Herring01464222012-08-28 13:06:41 -0500799 select NEED_MACH_GPIO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400800 select NEED_MACH_MEMORY_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900801 select SAMSUNG_ATAGS
Kukjin Kim170f4e42010-02-24 16:40:44 +0900802 help
803 Samsung S5PV210/S5PC110 series based systems
804
Kukjin Kim83014572011-11-06 13:54:56 +0900805config ARCH_EXYNOS
Russell King93e22562012-10-12 14:20:52 +0100806 bool "Samsung EXYNOS"
Russell Kingb1b3f492012-10-06 17:12:25 +0100807 select ARCH_HAS_CPUFREQ
Kamil Debski0f75a962011-07-21 16:42:30 +0900808 select ARCH_HAS_HOLES_MEMORYMODEL
Tomasz Figae245f962013-06-19 01:26:42 +0900809 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100810 select ARCH_SPARSEMEM_ENABLE
Tomasz Figae245f962013-06-19 01:26:42 +0900811 select ARM_GIC
Russell Kingb1b3f492012-10-06 17:12:25 +0100812 select CLKDEV_LOOKUP
Olof Johansson340fcb52013-04-26 11:47:45 -0700813 select COMMON_CLK
Russell Kingb1b3f492012-10-06 17:12:25 +0100814 select CPU_V7
815 select GENERIC_CLOCKEVENTS
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900816 select HAVE_CLK
Kukjin Kim20676c12010-11-13 16:08:32 +0900817 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900818 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100819 select HAVE_S3C_RTC if RTC_CLASS
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400820 select NEED_MACH_MEMORY_H
Tomasz Figa6e726ea2013-06-15 09:28:55 +0900821 select SPARSE_IRQ
Tomasz Figaf8b1ac02013-06-15 09:01:11 +0900822 select USE_OF
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900823 help
Kukjin Kim83014572011-11-06 13:54:56 +0900824 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900825
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826config ARCH_SHARK
827 bool "Shark"
Russell Kingb1b3f492012-10-06 17:12:25 +0100828 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000829 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100830 select ISA
831 select ISA_DMA
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400832 select NEED_MACH_MEMORY_H
Russell Kingb1b3f492012-10-06 17:12:25 +0100833 select PCI
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100834 select VIRT_TO_BUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100835 select ZONE_DMA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000836 help
837 Support for the StrongARM based Digital DNARD machine, also known
838 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100840config ARCH_DAVINCI
841 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100842 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700843 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100844 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700845 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100846 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100847 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100848 select HAVE_IDE
Rob Herring01464222012-08-28 13:06:41 -0500849 select NEED_MACH_GPIO_H
Matt Porter3ad7a422013-03-06 11:15:31 -0500850 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530851 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100852 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100853 help
854 Support for TI's DaVinci platform.
855
Tony Lindgrena0694862013-01-11 11:24:20 -0800856config ARCH_OMAP1
857 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600858 depends on MMU
Ben Dooks89c52ed2009-07-30 23:23:24 +0100859 select ARCH_HAS_CPUFREQ
Russell Kingb1b3f492012-10-06 17:12:25 +0100860 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800861 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100862 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200863 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100864 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100865 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800866 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100867 select HAVE_CLK
Tony Lindgrena0694862013-01-11 11:24:20 -0800868 select HAVE_IDE
869 select IRQ_DOMAIN
870 select NEED_MACH_IO_H if PCCARD
871 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100872 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800873 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800874
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875endchoice
876
Rob Herring387798b2012-09-06 13:41:12 -0500877menu "Multiple platform selection"
878 depends on ARCH_MULTIPLATFORM
879
880comment "CPU Core family selection"
881
Rob Herring387798b2012-09-06 13:41:12 -0500882config ARCH_MULTI_V4T
883 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500884 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100885 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200886 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
887 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
888 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500889
890config ARCH_MULTI_V5
891 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500892 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100893 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200894 select CPU_ARM926T if (!CPU_ARM946E || CPU_ARM1020 || \
895 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
896 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500897
898config ARCH_MULTI_V4_V5
899 bool
900
901config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800902 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500903 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100904 select CPU_V6
Rob Herring387798b2012-09-06 13:41:12 -0500905
906config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800907 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500908 default y
909 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100910 select CPU_V7
Rob Herring387798b2012-09-06 13:41:12 -0500911
912config ARCH_MULTI_V6_V7
913 bool
914
915config ARCH_MULTI_CPU_AUTO
916 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
917 select ARCH_MULTI_V5
918
919endmenu
920
Russell Kingccf50e22010-03-15 19:03:06 +0000921#
922# This is sorted alphabetically by mach-* pathname. However, plat-*
923# Kconfigs may be included either alphabetically (according to the
924# plat- suffix) or along side the corresponding mach-* source.
925#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200926source "arch/arm/mach-mvebu/Kconfig"
927
Russell King95b8f202010-01-14 11:43:54 +0000928source "arch/arm/mach-at91/Kconfig"
929
Christian Daudt8ac49e02012-11-19 09:46:10 -0800930source "arch/arm/mach-bcm/Kconfig"
931
Stephen Warrenf1ac9222013-03-11 22:40:18 -0600932source "arch/arm/mach-bcm2835/Kconfig"
933
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934source "arch/arm/mach-clps711x/Kconfig"
935
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300936source "arch/arm/mach-cns3xxx/Kconfig"
937
Russell King95b8f202010-01-14 11:43:54 +0000938source "arch/arm/mach-davinci/Kconfig"
939
940source "arch/arm/mach-dove/Kconfig"
941
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000942source "arch/arm/mach-ep93xx/Kconfig"
943
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944source "arch/arm/mach-footbridge/Kconfig"
945
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200946source "arch/arm/mach-gemini/Kconfig"
947
Rob Herring387798b2012-09-06 13:41:12 -0500948source "arch/arm/mach-highbank/Kconfig"
949
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950source "arch/arm/mach-integrator/Kconfig"
951
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100952source "arch/arm/mach-iop32x/Kconfig"
953
954source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955
Dan Williams285f5fa2006-12-07 02:59:39 +0100956source "arch/arm/mach-iop13xx/Kconfig"
957
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958source "arch/arm/mach-ixp4xx/Kconfig"
959
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400960source "arch/arm/mach-keystone/Kconfig"
961
Russell King95b8f202010-01-14 11:43:54 +0000962source "arch/arm/mach-kirkwood/Kconfig"
963
964source "arch/arm/mach-ks8695/Kconfig"
965
Russell King95b8f202010-01-14 11:43:54 +0000966source "arch/arm/mach-msm/Kconfig"
967
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200968source "arch/arm/mach-mv78xx0/Kconfig"
969
Shawn Guo3995eb82012-09-13 19:48:07 +0800970source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800972source "arch/arm/mach-mxs/Kconfig"
973
Russell King95b8f202010-01-14 11:43:54 +0000974source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800975
Russell King95b8f202010-01-14 11:43:54 +0000976source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000977
Daniel Tang9851ca52013-06-11 18:40:17 +1000978source "arch/arm/mach-nspire/Kconfig"
979
Tony Lindgrend48af152005-07-10 19:58:17 +0100980source "arch/arm/plat-omap/Kconfig"
981
982source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983
Tony Lindgren1dbae812005-11-10 14:26:51 +0000984source "arch/arm/mach-omap2/Kconfig"
985
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400986source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400987
Rob Herring387798b2012-09-06 13:41:12 -0500988source "arch/arm/mach-picoxcell/Kconfig"
989
Russell King95b8f202010-01-14 11:43:54 +0000990source "arch/arm/mach-pxa/Kconfig"
991source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992
Russell King95b8f202010-01-14 11:43:54 +0000993source "arch/arm/mach-mmp/Kconfig"
994
995source "arch/arm/mach-realview/Kconfig"
996
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200997source "arch/arm/mach-rockchip/Kconfig"
998
Russell King95b8f202010-01-14 11:43:54 +0000999source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +03001000
Ben Dookscf383672009-11-10 00:14:58 +00001001source "arch/arm/plat-samsung/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +01001002
Rob Herring387798b2012-09-06 13:41:12 -05001003source "arch/arm/mach-socfpga/Kconfig"
1004
Arnd Bergmanna7ed0992012-12-02 15:12:47 +01001005source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +01001006
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +01001007source "arch/arm/mach-sti/Kconfig"
1008
Kukjin Kim85fd6d62012-02-06 09:38:19 +09001009source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010
Ben Dooksa08ab632008-10-21 14:06:39 +01001011if ARCH_S3C64XX
Ben Dooks431107e2010-01-26 10:11:04 +09001012source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +01001013endif
1014
Kukjin Kim49b7a492010-09-07 15:47:18 +09001015source "arch/arm/mach-s5p64x0/Kconfig"
Kukjin Kimc4ffccd2010-01-14 08:19:36 +09001016
Byungho Min5a7652f2009-06-23 21:39:42 +09001017source "arch/arm/mach-s5pc100/Kconfig"
Byungho Min5a7652f2009-06-23 21:39:42 +09001018
Kukjin Kim170f4e42010-02-24 16:40:44 +09001019source "arch/arm/mach-s5pv210/Kconfig"
1020
Kukjin Kim83014572011-11-06 13:54:56 +09001021source "arch/arm/mach-exynos/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +09001022
Russell King882d01f2010-03-02 23:40:15 +00001023source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024
Maxime Ripard3b526342012-11-08 12:40:16 +01001025source "arch/arm/mach-sunxi/Kconfig"
1026
Barry Song156a0992012-08-23 13:41:58 +08001027source "arch/arm/mach-prima2/Kconfig"
1028
Erik Gillingc5f80062010-01-21 16:53:02 -08001029source "arch/arm/mach-tegra/Kconfig"
1030
Russell King95b8f202010-01-14 11:43:54 +00001031source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032
Russell King95b8f202010-01-14 11:43:54 +00001033source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034
1035source "arch/arm/mach-versatile/Kconfig"
1036
Russell Kingceade892010-02-11 21:44:53 +00001037source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +00001038source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +00001039
Marc Zyngier2a0ba732012-10-05 13:47:39 +01001040source "arch/arm/mach-virt/Kconfig"
1041
Tony Prisk6f35f9a2012-10-11 20:13:09 +13001042source "arch/arm/mach-vt8500/Kconfig"
1043
wanzongshun7ec80dd2008-12-03 03:55:38 +01001044source "arch/arm/mach-w90x900/Kconfig"
1045
Josh Cartwright9a45eb62012-11-19 11:38:29 -06001046source "arch/arm/mach-zynq/Kconfig"
1047
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048# Definitions to make life easier
1049config ARCH_ACORN
1050 bool
1051
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001052config PLAT_IOP
1053 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -07001054 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +01001055
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001056config PLAT_ORION
1057 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001058 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +01001059 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +01001060 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +02001061 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -04001062
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +02001063config PLAT_ORION_LEGACY
1064 bool
1065 select PLAT_ORION
1066
Eric Miaobd5ce432009-01-20 12:06:01 +08001067config PLAT_PXA
1068 bool
1069
Russell Kingf4b8b312010-01-14 12:48:06 +00001070config PLAT_VERSATILE
1071 bool
1072
Russell Kinge3887712010-01-14 13:30:16 +00001073config ARM_TIMER_SP804
1074 bool
Russell Kingbfe45e02011-05-08 15:33:30 +01001075 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -05001076 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +00001077
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078source arch/arm/mm/Kconfig
1079
Russell King958cab02011-12-11 10:04:00 +00001080config ARM_NR_BANKS
1081 int
1082 default 16 if ARCH_EP93XX
1083 default 8
1084
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001085config IWMMXT
Russell King698613b2013-04-03 16:33:26 +01001086 bool "Enable iWMMXt support" if !CPU_PJ4
Haojian Zhuangef6c8442010-11-24 11:54:25 +08001087 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
Russell King698613b2013-04-03 16:33:26 +01001088 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4
Lennert Buytenhekafe4b252006-12-03 18:51:14 +01001089 help
1090 Enable support for iWMMXt context switching at run time if
1091 running on a CPU that supports it.
1092
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093config XSCALE_PMU
1094 bool
Paul Bollebfc994b2011-10-30 12:51:41 +01001095 depends on CPU_XSCALE
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096 default y
1097
eric miao52108642010-12-13 09:42:34 +01001098config MULTI_IRQ_HANDLER
1099 bool
1100 help
1101 Allow each machine to specify it's own IRQ handler at run time.
1102
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001103if !MMU
1104source "arch/arm/Kconfig-nommu"
1105endif
1106
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001107config PJ4B_ERRATA_4742
1108 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1109 depends on CPU_PJ4B && MACH_ARMADA_370
1110 default y
1111 help
1112 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1113 Event (WFE) IDLE states, a specific timing sensitivity exists between
1114 the retiring WFI/WFE instructions and the newly issued subsequent
1115 instructions. This sensitivity can result in a CPU hang scenario.
1116 Workaround:
1117 The software must insert either a Data Synchronization Barrier (DSB)
1118 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1119 instruction
1120
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001121config ARM_ERRATA_326103
1122 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1123 depends on CPU_V6
1124 help
1125 Executing a SWP instruction to read-only memory does not set bit 11
1126 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1127 treat the access as a read, preventing a COW from occurring and
1128 causing the faulting task to livelock.
1129
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001130config ARM_ERRATA_411920
1131 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001132 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001133 help
1134 Invalidation of the Instruction Cache operation can
1135 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1136 It does not affect the MPCore. This option enables the ARM Ltd.
1137 recommended workaround.
1138
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001139config ARM_ERRATA_430973
1140 bool "ARM errata: Stale prediction on replaced interworking branch"
1141 depends on CPU_V7
1142 help
1143 This option enables the workaround for the 430973 Cortex-A8
1144 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1145 interworking branch is replaced with another code sequence at the
1146 same virtual address, whether due to self-modifying code or virtual
1147 to physical address re-mapping, Cortex-A8 does not recover from the
1148 stale interworking branch prediction. This results in Cortex-A8
1149 executing the new code sequence in the incorrect ARM or Thumb state.
1150 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1151 and also flushes the branch target cache at every context switch.
1152 Note that setting specific bits in the ACTLR register may not be
1153 available in non-secure mode.
1154
Catalin Marinas855c5512009-04-30 17:06:15 +01001155config ARM_ERRATA_458693
1156 bool "ARM errata: Processor deadlock when a false hazard is created"
1157 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001158 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001159 help
1160 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1161 erratum. For very specific sequences of memory operations, it is
1162 possible for a hazard condition intended for a cache line to instead
1163 be incorrectly associated with a different cache line. This false
1164 hazard might then cause a processor deadlock. The workaround enables
1165 the L1 caching of the NEON accesses and disables the PLD instruction
1166 in the ACTLR register. Note that setting specific bits in the ACTLR
1167 register may not be available in non-secure mode.
1168
Catalin Marinas0516e462009-04-30 17:06:20 +01001169config ARM_ERRATA_460075
1170 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1171 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001172 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001173 help
1174 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1175 erratum. Any asynchronous access to the L2 cache may encounter a
1176 situation in which recent store transactions to the L2 cache are lost
1177 and overwritten with stale memory contents from external memory. The
1178 workaround disables the write-allocate mode for the L2 cache via the
1179 ACTLR register. Note that setting specific bits in the ACTLR register
1180 may not be available in non-secure mode.
1181
Will Deacon9f050272010-09-14 09:51:43 +01001182config ARM_ERRATA_742230
1183 bool "ARM errata: DMB operation may be faulty"
1184 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001185 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001186 help
1187 This option enables the workaround for the 742230 Cortex-A9
1188 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1189 between two write operations may not ensure the correct visibility
1190 ordering of the two writes. This workaround sets a specific bit in
1191 the diagnostic register of the Cortex-A9 which causes the DMB
1192 instruction to behave as a DSB, ensuring the correct behaviour of
1193 the two writes.
1194
Will Deacona672e992010-09-14 09:53:02 +01001195config ARM_ERRATA_742231
1196 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1197 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001198 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001199 help
1200 This option enables the workaround for the 742231 Cortex-A9
1201 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1202 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1203 accessing some data located in the same cache line, may get corrupted
1204 data due to bad handling of the address hazard when the line gets
1205 replaced from one of the CPUs at the same time as another CPU is
1206 accessing it. This workaround sets specific bits in the diagnostic
1207 register of the Cortex-A9 which reduces the linefill issuing
1208 capabilities of the processor.
1209
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001210config PL310_ERRATA_588369
Will Deaconfa0ce402011-11-14 17:24:57 +01001211 bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001212 depends on CACHE_L2X0
Santosh Shilimkar9e655822010-02-04 19:42:42 +01001213 help
1214 The PL310 L2 cache controller implements three types of Clean &
1215 Invalidate maintenance operations: by Physical Address
1216 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1217 They are architecturally defined to behave as the execution of a
1218 clean operation followed immediately by an invalidate operation,
1219 both performing to the same memory location. This functionality
1220 is not correctly implemented in PL310 as clean lines are not
Santosh Shilimkar2839e062011-03-08 06:59:54 +01001221 invalidated as a result of these operations.
Will Deaconcdf357f2010-08-05 11:20:51 +01001222
Jon Medhurst69155792013-06-07 10:35:35 +01001223config ARM_ERRATA_643719
1224 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1225 depends on CPU_V7 && SMP
1226 help
1227 This option enables the workaround for the 643719 Cortex-A9 (prior to
1228 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1229 register returns zero when it should return one. The workaround
1230 corrects this value, ensuring cache maintenance operations which use
1231 it behave as intended and avoiding data corruption.
1232
Will Deaconcdf357f2010-08-05 11:20:51 +01001233config ARM_ERRATA_720789
1234 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001235 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001236 help
1237 This option enables the workaround for the 720789 Cortex-A9 (prior to
1238 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1239 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1240 As a consequence of this erratum, some TLB entries which should be
1241 invalidated are not, resulting in an incoherency in the system page
1242 tables. The workaround changes the TLB flushing routines to invalidate
1243 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001244
Russell King1f0090a2011-03-16 23:35:25 +00001245config PL310_ERRATA_727915
Will Deaconfa0ce402011-11-14 17:24:57 +01001246 bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
Russell King1f0090a2011-03-16 23:35:25 +00001247 depends on CACHE_L2X0
1248 help
1249 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1250 operation (offset 0x7FC). This operation runs in background so that
1251 PL310 can handle normal accesses while it is in progress. Under very
1252 rare circumstances, due to this erratum, write data can be lost when
1253 PL310 treats a cacheable write transaction during a Clean &
1254 Invalidate by Way operation.
1255
Will Deacon475d92f2010-09-28 14:02:02 +01001256config ARM_ERRATA_743622
1257 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1258 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001259 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001260 help
1261 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001262 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001263 optimisation in the Cortex-A9 Store Buffer may lead to data
1264 corruption. This workaround sets a specific bit in the diagnostic
1265 register of the Cortex-A9 which disables the Store Buffer
1266 optimisation, preventing the defect from occurring. This has no
1267 visible impact on the overall performance or power consumption of the
1268 processor.
1269
Will Deacon9a27c272011-02-18 16:36:35 +01001270config ARM_ERRATA_751472
1271 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001272 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001273 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001274 help
1275 This option enables the workaround for the 751472 Cortex-A9 (prior
1276 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1277 completion of a following broadcasted operation if the second
1278 operation is received by a CPU before the ICIALLUIS has completed,
1279 potentially leading to corrupted entries in the cache or TLB.
1280
Will Deaconfa0ce402011-11-14 17:24:57 +01001281config PL310_ERRATA_753970
1282 bool "PL310 errata: cache sync operation may be faulty"
Srinidhi Kasagar885028e2011-02-17 07:03:51 +01001283 depends on CACHE_PL310
1284 help
1285 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1286
1287 Under some condition the effect of cache sync operation on
1288 the store buffer still remains when the operation completes.
1289 This means that the store buffer is always asked to drain and
1290 this prevents it from merging any further writes. The workaround
1291 is to replace the normal offset of cache sync operation (0x730)
1292 by another offset targeting an unmapped PL310 register 0x740.
1293 This has the same effect as the cache sync operation: store buffer
1294 drain and waiting for all buffers empty.
1295
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001296config ARM_ERRATA_754322
1297 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1298 depends on CPU_V7
1299 help
1300 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1301 r3p*) erratum. A speculative memory access may cause a page table walk
1302 which starts prior to an ASID switch but completes afterwards. This
1303 can populate the micro-TLB with a stale entry which may be hit with
1304 the new ASID. This workaround places two dsb instructions in the mm
1305 switching code so that no page table walks can cross the ASID switch.
1306
Will Deacon5dab26af2011-03-04 12:38:54 +01001307config ARM_ERRATA_754327
1308 bool "ARM errata: no automatic Store Buffer drain"
1309 depends on CPU_V7 && SMP
1310 help
1311 This option enables the workaround for the 754327 Cortex-A9 (prior to
1312 r2p0) erratum. The Store Buffer does not have any automatic draining
1313 mechanism and therefore a livelock may occur if an external agent
1314 continuously polls a memory location waiting to observe an update.
1315 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1316 written polling loops from denying visibility of updates to memory.
1317
Catalin Marinas145e10e2011-08-15 11:04:41 +01001318config ARM_ERRATA_364296
1319 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001320 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001321 help
1322 This options enables the workaround for the 364296 ARM1136
1323 r0p2 erratum (possible cache data corruption with
1324 hit-under-miss enabled). It sets the undocumented bit 31 in
1325 the auxiliary control register and the FI bit in the control
1326 register, thus disabling hit-under-miss without putting the
1327 processor into full low interrupt latency mode. ARM11MPCore
1328 is not affected.
1329
Will Deaconf630c1b2011-09-15 11:45:15 +01001330config ARM_ERRATA_764369
1331 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1332 depends on CPU_V7 && SMP
1333 help
1334 This option enables the workaround for erratum 764369
1335 affecting Cortex-A9 MPCore with two or more processors (all
1336 current revisions). Under certain timing circumstances, a data
1337 cache line maintenance operation by MVA targeting an Inner
1338 Shareable memory region may fail to proceed up to either the
1339 Point of Coherency or to the Point of Unification of the
1340 system. This workaround adds a DSB instruction before the
1341 relevant cache maintenance functions and sets a specific bit
1342 in the diagnostic control register of the SCU.
1343
Will Deacon11ed0ba2011-11-14 17:24:58 +01001344config PL310_ERRATA_769419
1345 bool "PL310 errata: no automatic Store Buffer drain"
1346 depends on CACHE_L2X0
1347 help
1348 On revisions of the PL310 prior to r3p2, the Store Buffer does
1349 not automatically drain. This can cause normal, non-cacheable
1350 writes to be retained when the memory system is idle, leading
1351 to suboptimal I/O performance for drivers using coherent DMA.
1352 This option adds a write barrier to the cpu_idle loop so that,
1353 on systems with an outer cache, the store buffer is drained
1354 explicitly.
1355
Simon Horman7253b852012-09-28 02:12:45 +01001356config ARM_ERRATA_775420
1357 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1358 depends on CPU_V7
1359 help
1360 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1361 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1362 operation aborts with MMU exception, it might cause the processor
1363 to deadlock. This workaround puts DSB before executing ISB if
1364 an abort may occur on cache maintenance.
1365
Catalin Marinas93dc6882013-03-26 23:35:04 +01001366config ARM_ERRATA_798181
1367 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1368 depends on CPU_V7 && SMP
1369 help
1370 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1371 adequately shooting down all use of the old entries. This
1372 option enables the Linux kernel workaround for this erratum
1373 which sends an IPI to the CPUs that are running the same ASID
1374 as the one being invalidated.
1375
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376endmenu
1377
1378source "arch/arm/common/Kconfig"
1379
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380menu "Bus support"
1381
1382config ARM_AMBA
1383 bool
1384
1385config ISA
1386 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387 help
1388 Find out whether you have ISA slots on your motherboard. ISA is the
1389 name of a bus system, i.e. the way the CPU talks to the other stuff
1390 inside your box. Other bus systems are PCI, EISA, MicroChannel
1391 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1392 newer boards don't support it. If you have ISA, say Y, otherwise N.
1393
Russell King065909b2006-01-04 15:44:16 +00001394# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001395config ISA_DMA
1396 bool
Russell King065909b2006-01-04 15:44:16 +00001397 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398
Russell King065909b2006-01-04 15:44:16 +00001399# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001400config ISA_DMA_API
1401 bool
Al Viro5cae8412005-05-04 05:39:22 +01001402
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001404 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405 help
1406 Find out whether you have a PCI motherboard. PCI is the name of a
1407 bus system, i.e. the way the CPU talks to the other stuff inside
1408 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1409 VESA. If you have PCI, say Y, otherwise N.
1410
Anton Vorontsov52882172010-04-19 13:20:49 +01001411config PCI_DOMAINS
1412 bool
1413 depends on PCI
1414
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001415config PCI_NANOENGINE
1416 bool "BSE nanoEngine PCI support"
1417 depends on SA1100_NANOENGINE
1418 help
1419 Enable PCI on the BSE nanoEngine board.
1420
Matthew Wilcox36e23592007-07-10 10:54:40 -06001421config PCI_SYSCALL
1422 def_bool PCI
1423
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424# Select the host bridge type
1425config PCI_HOST_VIA82C505
1426 bool
1427 depends on PCI && ARCH_SHARK
1428 default y
1429
Mike Rapoporta0113a92007-11-25 08:55:34 +01001430config PCI_HOST_ITE8152
1431 bool
1432 depends on PCI && MACH_ARMCORE
1433 default y
1434 select DMABOUNCE
1435
Linus Torvalds1da177e2005-04-16 15:20:36 -07001436source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001437source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438
1439source "drivers/pcmcia/Kconfig"
1440
1441endmenu
1442
1443menu "Kernel Features"
1444
Dave Martin3b556582011-12-07 15:38:04 +00001445config HAVE_SMP
1446 bool
1447 help
1448 This option should be selected by machines which have an SMP-
1449 capable CPU.
1450
1451 The only effect of this option is to make the SMP-related
1452 options available to the user for configuration.
1453
Linus Torvalds1da177e2005-04-16 15:20:36 -07001454config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001455 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001456 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001457 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001458 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001459 depends on MMU || ARM_MPU
Russell Kingb1b3f492012-10-06 17:12:25 +01001460 select USE_GENERIC_SMP_HELPERS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461 help
1462 This enables support for systems with more than one CPU. If you have
1463 a system with only one CPU, like most personal computers, say N. If
1464 you have a system with more than one CPU, say Y.
1465
1466 If you say N here, the kernel will run on single and multiprocessor
1467 machines, but will use only one CPU of a multiprocessor machine. If
1468 you say Y here, the kernel will run on many, but not all, single
1469 processor machines. On a single processor machine, the kernel will
1470 run faster if you say N here.
1471
Paul Bolle395cf962011-08-15 02:02:26 +02001472 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001474 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475
1476 If you don't know what to do here, say N.
1477
Russell Kingf00ec482010-09-04 10:47:48 +01001478config SMP_ON_UP
1479 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
Jonathan Austin801bb212013-02-22 18:56:04 +00001480 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001481 default y
1482 help
1483 SMP kernels contain instructions which fail on non-SMP processors.
1484 Enabling this option allows the kernel to modify itself to make
1485 these instructions safe. Disabling it allows about 1K of space
1486 savings.
1487
1488 If you don't know what to do here, say Y.
1489
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001490config ARM_CPU_TOPOLOGY
1491 bool "Support cpu topology definition"
1492 depends on SMP && CPU_V7
1493 default y
1494 help
1495 Support ARM cpu topology definition. The MPIDR register defines
1496 affinity between processors which is then used to describe the cpu
1497 topology of an ARM System.
1498
1499config SCHED_MC
1500 bool "Multi-core scheduler support"
1501 depends on ARM_CPU_TOPOLOGY
1502 help
1503 Multi-core scheduler support improves the CPU scheduler's decision
1504 making when dealing with multi-core CPU chips at a cost of slightly
1505 increased overhead in some places. If unsure say N here.
1506
1507config SCHED_SMT
1508 bool "SMT scheduler support"
1509 depends on ARM_CPU_TOPOLOGY
1510 help
1511 Improves the CPU scheduler's decision making when dealing with
1512 MultiThreading at a cost of slightly increased overhead in some
1513 places. If unsure say N here.
1514
Russell Kinga8cbcd92009-05-16 11:51:14 +01001515config HAVE_ARM_SCU
1516 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001517 help
1518 This option enables support for the ARM system coherency unit
1519
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001520config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001521 bool "Architected timer support"
1522 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001523 select ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001524 help
1525 This option enables support for the ARM architected timer
1526
Russell Kingf32f4ce2009-05-16 12:14:21 +01001527config HAVE_ARM_TWD
1528 bool
1529 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001530 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001531 help
1532 This options enables support for the ARM timer and watchdog unit
1533
Nicolas Pitree8db2882012-04-12 02:45:22 -04001534config MCPM
1535 bool "Multi-Cluster Power Management"
1536 depends on CPU_V7 && SMP
1537 help
1538 This option provides the common power management infrastructure
1539 for (multi-)cluster based systems, such as big.LITTLE based
1540 systems.
1541
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001542choice
1543 prompt "Memory split"
1544 default VMSPLIT_3G
1545 help
1546 Select the desired split between kernel and user memory.
1547
1548 If you are not absolutely sure what you are doing, leave this
1549 option alone!
1550
1551 config VMSPLIT_3G
1552 bool "3G/1G user/kernel split"
1553 config VMSPLIT_2G
1554 bool "2G/2G user/kernel split"
1555 config VMSPLIT_1G
1556 bool "1G/3G user/kernel split"
1557endchoice
1558
1559config PAGE_OFFSET
1560 hex
1561 default 0x40000000 if VMSPLIT_1G
1562 default 0x80000000 if VMSPLIT_2G
1563 default 0xC0000000
1564
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565config NR_CPUS
1566 int "Maximum number of CPUs (2-32)"
1567 range 2 32
1568 depends on SMP
1569 default "4"
1570
Russell Kinga054a812005-11-02 22:24:33 +00001571config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001572 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001573 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001574 help
1575 Say Y here to experiment with turning CPUs off and on. CPUs
1576 can be controlled through /sys/devices/system/cpu.
1577
Will Deacon2bdd4242012-12-12 19:20:52 +00001578config ARM_PSCI
1579 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1580 depends on CPU_V7
1581 help
1582 Say Y here if you want Linux to communicate with system firmware
1583 implementing the PSCI specification for CPU-centric power
1584 management operations described in ARM document number ARM DEN
1585 0022A ("Power State Coordination Interface System Software on
1586 ARM processors").
1587
Russell King37ee16a2005-11-08 19:08:05 +00001588config LOCAL_TIMERS
1589 bool "Use local timer interrupts"
Russell King971acb92010-09-04 08:16:30 +01001590 depends on SMP
Russell King37ee16a2005-11-08 19:08:05 +00001591 default y
1592 help
1593 Enable support for local timers on SMP platforms, rather then the
1594 legacy IPI broadcast method. Local timers allows the system
1595 accounting to be spread across the timer interval, preventing a
1596 "thundering herd" at every timer tick.
1597
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001598# The GPIO number here must be sorted by descending number. In case of
1599# a multiplatform kernel, we just want the highest value required by the
1600# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001601config ARCH_NR_GPIO
1602 int
Peter De Schrijver (NVIDIA)3dea19e2011-12-21 15:14:52 +01001603 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
Tarun Kanti DebBarma39f47d92012-04-26 18:31:17 +05301604 default 512 if SOC_OMAP5
Santosh Shilimkar828989a2013-06-10 11:27:13 -04001605 default 512 if ARCH_KEYSTONE
Olof Johansson06b851e2013-04-02 18:33:58 -07001606 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001607 default 352 if ARCH_VT8500
1608 default 288 if ARCH_SUNXI
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001609 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001610 default 0
1611 help
1612 Maximum number of GPIOs in the system.
1613
1614 If unsure, leave the default value.
1615
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001616source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617
Russell Kingc9218b12013-04-27 23:31:10 +01001618config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001619 int
Kukjin Kimb130d5c2012-02-03 14:29:23 +09001620 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001621 ARCH_S5PV210 || ARCH_EXYNOS4
David Brownell5248c652007-11-12 17:59:10 +01001622 default AT91_TIMER_HZ if ARCH_AT91
Magnus Damm5da3e712010-07-29 14:03:04 +01001623 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
Russell Kingc9218b12013-04-27 23:31:10 +01001624
1625choice
1626 depends on !HZ_FIXED
1627 prompt "Timer frequency"
1628
1629config HZ_100
1630 bool "100 Hz"
1631
1632config HZ_200
1633 bool "200 Hz"
1634
1635config HZ_250
1636 bool "250 Hz"
1637
1638config HZ_300
1639 bool "300 Hz"
1640
1641config HZ_500
1642 bool "500 Hz"
1643
1644config HZ_1000
1645 bool "1000 Hz"
1646
1647endchoice
1648
1649config HZ
1650 int
1651 default HZ_FIXED if HZ_FIXED
1652 default 100 if HZ_100
1653 default 200 if HZ_200
1654 default 250 if HZ_250
1655 default 300 if HZ_300
1656 default 500 if HZ_500
1657 default 1000
1658
1659config SCHED_HRTICK
1660 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001661
Russell Kingb28748f2013-02-17 14:40:33 +00001662config SCHED_HRTICK
1663 def_bool HIGH_RES_TIMERS
1664
Catalin Marinas16c79652009-07-24 12:33:02 +01001665config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001666 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001667 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001668 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001669 select AEABI
1670 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001671 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001672 help
1673 By enabling this option, the kernel will be compiled in
1674 Thumb-2 mode. A compiler/assembler that understand the unified
1675 ARM-Thumb syntax is needed.
1676
1677 If unsure, say N.
1678
Dave Martin6f685c52011-03-03 11:41:12 +01001679config THUMB2_AVOID_R_ARM_THM_JUMP11
1680 bool "Work around buggy Thumb-2 short branch relocations in gas"
1681 depends on THUMB2_KERNEL && MODULES
1682 default y
1683 help
1684 Various binutils versions can resolve Thumb-2 branches to
1685 locally-defined, preemptible global symbols as short-range "b.n"
1686 branch instructions.
1687
1688 This is a problem, because there's no guarantee the final
1689 destination of the symbol, or any candidate locations for a
1690 trampoline, are within range of the branch. For this reason, the
1691 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1692 relocation in modules at all, and it makes little sense to add
1693 support.
1694
1695 The symptom is that the kernel fails with an "unsupported
1696 relocation" error when loading some modules.
1697
1698 Until fixed tools are available, passing
1699 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1700 code which hits this problem, at the cost of a bit of extra runtime
1701 stack usage in some cases.
1702
1703 The problem is described in more detail at:
1704 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1705
1706 Only Thumb-2 kernels are affected.
1707
1708 Unless you are sure your tools don't have this problem, say Y.
1709
Catalin Marinas0becb082009-07-24 12:32:53 +01001710config ARM_ASM_UNIFIED
1711 bool
1712
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001713config AEABI
1714 bool "Use the ARM EABI to compile the kernel"
1715 help
1716 This option allows for the kernel to be compiled using the latest
1717 ARM ABI (aka EABI). This is only useful if you are using a user
1718 space environment that is also compiled with EABI.
1719
1720 Since there are major incompatibilities between the legacy ABI and
1721 EABI, especially with regard to structure member alignment, this
1722 option also changes the kernel syscall calling convention to
1723 disambiguate both ABIs and allow for backward compatibility support
1724 (selected with CONFIG_OABI_COMPAT).
1725
1726 To use this you need GCC version 4.0.0 or later.
1727
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001728config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001729 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001730 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001731 default y
1732 help
1733 This option preserves the old syscall interface along with the
1734 new (ARM EABI) one. It also provides a compatibility layer to
1735 intercept syscalls that have structure arguments which layout
1736 in memory differs between the legacy ABI and the new ARM EABI
1737 (only for non "thumb" binaries). This option adds a tiny
1738 overhead to all syscalls and produces a slightly larger kernel.
1739 If you know you'll be using only pure EABI user space then you
1740 can say N here. If this option is not selected and you attempt
1741 to execute a legacy ABI binary then the result will be
1742 UNPREDICTABLE (in fact it can be predicted that it won't work
1743 at all). If in doubt say Y.
1744
Mel Gormaneb335752009-05-13 17:34:48 +01001745config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001746 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001747
Russell King05944d72006-11-30 20:43:51 +00001748config ARCH_SPARSEMEM_ENABLE
1749 bool
1750
Russell King07a2f732008-10-01 21:39:58 +01001751config ARCH_SPARSEMEM_DEFAULT
1752 def_bool ARCH_SPARSEMEM_ENABLE
1753
Russell King05944d72006-11-30 20:43:51 +00001754config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001755 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001756
Will Deacon7b7bf492011-05-19 13:21:14 +01001757config HAVE_ARCH_PFN_VALID
1758 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1759
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001760config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001761 bool "High Memory Support"
1762 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001763 help
1764 The address space of ARM processors is only 4 Gigabytes large
1765 and it has to accommodate user address space, kernel address
1766 space as well as some memory mapped IO. That means that, if you
1767 have a large amount of physical memory and/or IO, not all of the
1768 memory can be "permanently mapped" by the kernel. The physical
1769 memory that is not permanently mapped is called "high memory".
1770
1771 Depending on the selected kernel/user memory split, minimum
1772 vmalloc space and actual amount of RAM, you may not need this
1773 option which should result in a slightly faster kernel.
1774
1775 If unsure, say n.
1776
Russell King65cec8e2009-08-17 20:02:06 +01001777config HIGHPTE
1778 bool "Allocate 2nd-level pagetables from highmem"
1779 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001780
Jamie Iles1b8873a2010-02-02 20:25:44 +01001781config HW_PERF_EVENTS
1782 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001783 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001784 default y
1785 help
1786 Enable hardware performance counter support for perf events. If
1787 disabled, perf events will use software events only.
1788
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001789config SYS_SUPPORTS_HUGETLBFS
1790 def_bool y
1791 depends on ARM_LPAE
1792
Catalin Marinas8d962502012-07-25 14:39:26 +01001793config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1794 def_bool y
1795 depends on ARM_LPAE
1796
Steven Capper4bfab202013-07-26 14:58:22 +01001797config ARCH_WANT_GENERAL_HUGETLB
1798 def_bool y
1799
Dave Hansen3f22ab22005-06-23 00:07:43 -07001800source "mm/Kconfig"
1801
Magnus Dammc1b2d972010-07-05 10:00:11 +01001802config FORCE_MAX_ZONEORDER
1803 int "Maximum zone order" if ARCH_SHMOBILE
1804 range 11 64 if ARCH_SHMOBILE
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001805 default "12" if SOC_AM33XX
Magnus Dammc1b2d972010-07-05 10:00:11 +01001806 default "9" if SA1111
1807 default "11"
1808 help
1809 The kernel memory allocator divides physically contiguous memory
1810 blocks into "zones", where each zone is a power of two number of
1811 pages. This option selects the largest power of two that the kernel
1812 keeps in the memory allocator. If you need to allocate very large
1813 blocks of physically contiguous memory, then you may need to
1814 increase this value.
1815
1816 This config option is actually maximum order plus one. For example,
1817 a value of 11 means that the largest free memory block is 2^10 pages.
1818
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819config ALIGNMENT_TRAP
1820 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001821 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001822 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001823 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001825 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001826 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1827 address divisible by 4. On 32-bit ARM processors, these non-aligned
1828 fetch/store instructions will be emulated in software if you say
1829 here, which has a severe performance impact. This is necessary for
1830 correct operation of some network protocols. With an IP-only
1831 configuration it is safe to say N, otherwise say Y.
1832
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001833config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001834 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1835 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001836 default y if CPU_FEROCEON
1837 help
1838 Implement faster copy_to_user and clear_user methods for CPU
1839 cores where a 8-word STM instruction give significantly higher
1840 memory write throughput than a sequence of individual 32bit stores.
1841
1842 A possible side effect is a slight increase in scheduling latency
1843 between threads sharing the same address space if they invoke
1844 such copy operations with large buffers.
1845
1846 However, if the CPU data cache is using a write-allocate mode,
1847 this option is unlikely to provide any performance gain.
1848
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001849config SECCOMP
1850 bool
1851 prompt "Enable seccomp to safely compute untrusted bytecode"
1852 ---help---
1853 This kernel feature is useful for number crunching applications
1854 that may need to compute untrusted bytecode during their
1855 execution. By using pipes or other transports made available to
1856 the process as file descriptors supporting the read/write
1857 syscalls, it's possible to isolate those applications in
1858 their own address space using seccomp. Once seccomp is
1859 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1860 and the task is only allowed to execute a few safe syscalls
1861 defined by each seccomp mode.
1862
Nicolas Pitrec743f382010-05-24 23:55:42 -04001863config CC_STACKPROTECTOR
1864 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1865 help
1866 This option turns on the -fstack-protector GCC feature. This
1867 feature puts, at the beginning of functions, a canary value on
1868 the stack just before the return address, and validates
1869 the value just before actually returning. Stack based buffer
1870 overflows (that need to overwrite this return address) now also
1871 overwrite the canary, which gets detected and the attack is then
1872 neutralized via a kernel panic.
1873 This feature requires gcc version 4.2 or above.
1874
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001875config XEN_DOM0
1876 def_bool y
1877 depends on XEN
1878
1879config XEN
1880 bool "Xen guest support on ARM (EXPERIMENTAL)"
Ian Campbell85323a92013-03-07 07:17:25 +00001881 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001882 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001883 depends on !GENERIC_ATOMIC64
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001884 select ARM_PSCI
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001885 help
1886 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1887
Linus Torvalds1da177e2005-04-16 15:20:36 -07001888endmenu
1889
1890menu "Boot options"
1891
Grant Likely9eb8f672011-04-28 14:27:20 -06001892config USE_OF
1893 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001894 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001895 select OF
1896 select OF_EARLY_FLATTREE
1897 help
1898 Include support for flattened device tree machine descriptions.
1899
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001900config ATAGS
1901 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1902 default y
1903 help
1904 This is the traditional way of passing data to the kernel at boot
1905 time. If you are solely relying on the flattened device tree (or
1906 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1907 to remove ATAGS support from your kernel binary. If unsure,
1908 leave this to y.
1909
1910config DEPRECATED_PARAM_STRUCT
1911 bool "Provide old way to pass kernel parameters"
1912 depends on ATAGS
1913 help
1914 This was deprecated in 2001 and announced to live on for 5 years.
1915 Some old boot loaders still use this way.
1916
Linus Torvalds1da177e2005-04-16 15:20:36 -07001917# Compressed boot loader in ROM. Yes, we really want to ask about
1918# TEXT and BSS so we preserve their values in the config files.
1919config ZBOOT_ROM_TEXT
1920 hex "Compressed ROM boot loader base address"
1921 default "0"
1922 help
1923 The physical address at which the ROM-able zImage is to be
1924 placed in the target. Platforms which normally make use of
1925 ROM-able zImage formats normally set this to a suitable
1926 value in their defconfig file.
1927
1928 If ZBOOT_ROM is not enabled, this has no effect.
1929
1930config ZBOOT_ROM_BSS
1931 hex "Compressed ROM boot loader BSS address"
1932 default "0"
1933 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001934 The base address of an area of read/write memory in the target
1935 for the ROM-able zImage which must be available while the
1936 decompressor is running. It must be large enough to hold the
1937 entire decompressed kernel plus an additional 128 KiB.
1938 Platforms which normally make use of ROM-able zImage formats
1939 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940
1941 If ZBOOT_ROM is not enabled, this has no effect.
1942
1943config ZBOOT_ROM
1944 bool "Compressed boot loader in ROM/flash"
1945 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1946 help
1947 Say Y here if you intend to execute your compressed kernel image
1948 (zImage) directly from ROM or flash. If unsure, say N.
1949
Simon Horman090ab3f2011-04-26 06:29:53 +01001950choice
1951 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001952 depends on ZBOOT_ROM && ARCH_SH7372
Simon Horman090ab3f2011-04-26 06:29:53 +01001953 default ZBOOT_ROM_NONE
1954 help
1955 Include experimental SD/MMC loading code in the ROM-able zImage.
Masanari Iida59bf8962012-04-18 00:01:21 +09001956 With this enabled it is possible to write the ROM-able zImage
Simon Horman090ab3f2011-04-26 06:29:53 +01001957 kernel image to an MMC or SD card and boot the kernel straight
1958 from the reset vector. At reset the processor Mask ROM will load
Masanari Iida59bf8962012-04-18 00:01:21 +09001959 the first part of the ROM-able zImage which in turn loads the
Simon Horman090ab3f2011-04-26 06:29:53 +01001960 rest the kernel image to RAM.
1961
1962config ZBOOT_ROM_NONE
1963 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1964 help
1965 Do not load image from SD or MMC
1966
Simon Hormanf45b1142011-01-11 04:01:08 +01001967config ZBOOT_ROM_MMCIF
1968 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
Simon Hormanf45b1142011-01-11 04:01:08 +01001969 help
Simon Horman090ab3f2011-04-26 06:29:53 +01001970 Load image from MMCIF hardware block.
1971
1972config ZBOOT_ROM_SH_MOBILE_SDHI
1973 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1974 help
1975 Load image from SDHI hardware block
1976
1977endchoice
Simon Hormanf45b1142011-01-11 04:01:08 +01001978
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001979config ARM_APPENDED_DTB
1980 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001981 depends on OF && !ZBOOT_ROM
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001982 help
1983 With this option, the boot code will look for a device tree binary
1984 (DTB) appended to zImage
1985 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1986
1987 This is meant as a backward compatibility convenience for those
1988 systems with a bootloader that can't be upgraded to accommodate
1989 the documented boot protocol using a device tree.
1990
1991 Beware that there is very little in terms of protection against
1992 this option being confused by leftover garbage in memory that might
1993 look like a DTB header after a reboot if no actual DTB is appended
1994 to zImage. Do not leave this option active in a production kernel
1995 if you don't intend to always append a DTB. Proper passing of the
1996 location into r2 of a bootloader provided DTB is always preferable
1997 to this option.
1998
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001999config ARM_ATAG_DTB_COMPAT
2000 bool "Supplement the appended DTB with traditional ATAG information"
2001 depends on ARM_APPENDED_DTB
2002 help
2003 Some old bootloaders can't be updated to a DTB capable one, yet
2004 they provide ATAGs with memory configuration, the ramdisk address,
2005 the kernel cmdline string, etc. Such information is dynamically
2006 provided by the bootloader and can't always be stored in a static
2007 DTB. To allow a device tree enabled kernel to be used with such
2008 bootloaders, this option allows zImage to extract the information
2009 from the ATAG list and store it at run time into the appended DTB.
2010
Genoud Richardd0f34a112012-06-26 16:37:59 +01002011choice
2012 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
2013 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
2014
2015config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
2016 bool "Use bootloader kernel arguments if available"
2017 help
2018 Uses the command-line options passed by the boot loader instead of
2019 the device tree bootargs property. If the boot loader doesn't provide
2020 any, the device tree bootargs property will be used.
2021
2022config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
2023 bool "Extend with bootloader kernel arguments"
2024 help
2025 The command-line arguments provided by the boot loader will be
2026 appended to the the device tree bootargs property.
2027
2028endchoice
2029
Linus Torvalds1da177e2005-04-16 15:20:36 -07002030config CMDLINE
2031 string "Default kernel command string"
2032 default ""
2033 help
2034 On some architectures (EBSA110 and CATS), there is currently no way
2035 for the boot loader to pass arguments to the kernel. For these
2036 architectures, you should supply some command-line options at build
2037 time by entering them here. As a minimum, you should specify the
2038 memory size and the root device (e.g., mem=64M root=/dev/nfs).
2039
Victor Boivie4394c122011-05-04 17:07:55 +01002040choice
2041 prompt "Kernel command line type" if CMDLINE != ""
2042 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002043 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01002044
2045config CMDLINE_FROM_BOOTLOADER
2046 bool "Use bootloader kernel arguments if available"
2047 help
2048 Uses the command-line options passed by the boot loader. If
2049 the boot loader doesn't provide any, the default kernel command
2050 string provided in CMDLINE will be used.
2051
2052config CMDLINE_EXTEND
2053 bool "Extend bootloader kernel arguments"
2054 help
2055 The command-line arguments provided by the boot loader will be
2056 appended to the default kernel command string.
2057
Alexander Holler92d20402010-02-16 19:04:53 +01002058config CMDLINE_FORCE
2059 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01002060 help
2061 Always use the default kernel command string, even if the boot
2062 loader passes other arguments to the kernel.
2063 This is useful if you cannot or don't want to change the
2064 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01002065endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01002066
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067config XIP_KERNEL
2068 bool "Kernel Execute-In-Place from ROM"
Rob Herring387798b2012-09-06 13:41:12 -05002069 depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07002070 help
2071 Execute-In-Place allows the kernel to run from non-volatile storage
2072 directly addressable by the CPU, such as NOR flash. This saves RAM
2073 space since the text section of the kernel is not loaded from flash
2074 to RAM. Read-write sections, such as the data section and stack,
2075 are still copied to RAM. The XIP kernel is not compressed since
2076 it has to run directly from flash, so it will take more space to
2077 store it. The flash address used to link the kernel object files,
2078 and for storing it, is configuration dependent. Therefore, if you
2079 say Y here, you must know the proper physical address where to
2080 store the kernel image depending on your own flash memory usage.
2081
2082 Also note that the make target becomes "make xipImage" rather than
2083 "make zImage" or "make Image". The final kernel binary to put in
2084 ROM memory will be arch/arm/boot/xipImage.
2085
2086 If unsure, say N.
2087
2088config XIP_PHYS_ADDR
2089 hex "XIP Kernel Physical Location"
2090 depends on XIP_KERNEL
2091 default "0x00080000"
2092 help
2093 This is the physical address in your flash memory the kernel will
2094 be linked for and stored to. This address is dependent on your
2095 own flash usage.
2096
Richard Purdiec587e4a2007-02-06 21:29:00 +01002097config KEXEC
2098 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01002099 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01002100 help
2101 kexec is a system call that implements the ability to shutdown your
2102 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02002103 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01002104 you can start any kernel with it, not just Linux.
2105
2106 It is an ongoing process to be certain the hardware in a machine
2107 is properly shutdown, so do not be surprised if this code does not
2108 initially work for you. It may help to enable device hotplugging
2109 support.
2110
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002111config ATAGS_PROC
2112 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01002113 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01002114 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01002115 help
2116 Should the atags used to boot the kernel be exported in an "atags"
2117 file in procfs. Useful with kexec.
2118
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002119config CRASH_DUMP
2120 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01002121 help
2122 Generate crash dump after being started by kexec. This should
2123 be normally only set in special crash dump kernels which are
2124 loaded in the main kernel with kexec-tools into a specially
2125 reserved region and then later executed after a crash by
2126 kdump/kexec. The crash dump kernel must be compiled to a
2127 memory address not used by the main kernel
2128
2129 For more details see Documentation/kdump/kdump.txt
2130
Eric Miaoe69edc792010-07-05 15:56:50 +02002131config AUTO_ZRELADDR
2132 bool "Auto calculation of the decompressed kernel image address"
Linus Walleije1b31442013-05-02 18:01:46 +02002133 depends on !ZBOOT_ROM
Eric Miaoe69edc792010-07-05 15:56:50 +02002134 help
2135 ZRELADDR is the physical address where the decompressed kernel
2136 image will be placed. If AUTO_ZRELADDR is selected, the address
2137 will be determined at run-time by masking the current IP with
2138 0xf8000000. This assumes the zImage being placed in the first 128MB
2139 from start of memory.
2140
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141endmenu
2142
Russell Kingac9d7ef2008-08-18 17:26:00 +01002143menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144
Ben Dooks89c52ed2009-07-30 23:23:24 +01002145if ARCH_HAS_CPUFREQ
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147endif
2148
Russell Kingac9d7ef2008-08-18 17:26:00 +01002149source "drivers/cpuidle/Kconfig"
2150
2151endmenu
2152
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153menu "Floating point emulation"
2154
2155comment "At least one emulation must be selected"
2156
2157config FPE_NWFPE
2158 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002159 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002160 ---help---
2161 Say Y to include the NWFPE floating point emulator in the kernel.
2162 This is necessary to run most binaries. Linux does not currently
2163 support floating point hardware so you need to say Y here even if
2164 your machine has an FPA or floating point co-processor podule.
2165
2166 You may say N here if you are going to load the Acorn FPEmulator
2167 early in the bootup.
2168
2169config FPE_NWFPE_XP
2170 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002171 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002172 help
2173 Say Y to include 80-bit support in the kernel floating-point
2174 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2175 Note that gcc does not generate 80-bit operations by default,
2176 so in most cases this option only enlarges the size of the
2177 floating point emulator without any good reason.
2178
2179 You almost surely want to say N here.
2180
2181config FPE_FASTFPE
2182 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002183 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002184 ---help---
2185 Say Y here to include the FAST floating point emulator in the kernel.
2186 This is an experimental much faster emulator which now also has full
2187 precision for the mantissa. It does not support any exceptions.
2188 It is very simple, and approximately 3-6 times faster than NWFPE.
2189
2190 It should be sufficient for most programs. It may be not suitable
2191 for scientific calculations, but you have to check this for yourself.
2192 If you do not feel you need a faster FP emulation you should better
2193 choose NWFPE.
2194
2195config VFP
2196 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002197 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002198 help
2199 Say Y to include VFP support code in the kernel. This is needed
2200 if your hardware includes a VFP unit.
2201
2202 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2203 release notes and additional status information.
2204
2205 Say N if your target does not have VFP hardware.
2206
Catalin Marinas25ebee02007-09-25 15:22:24 +01002207config VFPv3
2208 bool
2209 depends on VFP
2210 default y if CPU_V7
2211
Catalin Marinasb5872db2008-01-10 19:16:17 +01002212config NEON
2213 bool "Advanced SIMD (NEON) Extension support"
2214 depends on VFPv3 && CPU_V7
2215 help
2216 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2217 Extension.
2218
Linus Torvalds1da177e2005-04-16 15:20:36 -07002219endmenu
2220
2221menu "Userspace binary formats"
2222
2223source "fs/Kconfig.binfmt"
2224
2225config ARTHUR
2226 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +00002227 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -07002228 help
2229 Say Y here to include the kernel code necessary if you want to run
2230 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2231 experimental; if this sounds frightening, say N and sleep in peace.
2232 You can also say M here to compile this support as a module (which
2233 will be called arthur).
2234
2235endmenu
2236
2237menu "Power management options"
2238
Russell Kingeceab4a2005-11-15 11:31:41 +00002239source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002240
Johannes Bergf4cb5702007-12-08 02:14:00 +01002241config ARCH_SUSPEND_POSSIBLE
Stephen Warren4b1082c2012-09-05 09:58:27 -06002242 depends on !ARCH_S5PC100
Russell King6a786182011-04-02 10:15:28 +01002243 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
Chao Xie3f5d0812012-05-07 11:23:58 +08002244 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002245 def_bool y
2246
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002247config ARM_CPU_SUSPEND
2248 def_bool PM_SLEEP
2249
Linus Torvalds1da177e2005-04-16 15:20:36 -07002250endmenu
2251
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002252source "net/Kconfig"
2253
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002254source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002255
2256source "fs/Kconfig"
2257
Linus Torvalds1da177e2005-04-16 15:20:36 -07002258source "arch/arm/Kconfig.debug"
2259
2260source "security/Kconfig"
2261
2262source "crypto/Kconfig"
2263
2264source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002265
2266source "arch/arm/kvm/Kconfig"