blob: 81c8b912d306a697300bee3b609cf4ef9dc36fe4 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ARM
2 bool
3 default y
Catalin Marinas74634492012-07-30 14:41:09 -07004 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Kees Cook2b68f6c2015-04-14 15:48:00 -07005 select ARCH_HAS_ELF_RANDOMIZE
Mark Rutland3d067702012-10-30 12:13:42 +00006 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Russell King171b3f02013-09-12 21:24:42 +01007 select ARCH_HAVE_CUSTOM_GPIO_H
Riku Voipio957e3fa2014-12-12 16:57:44 -08008 select ARCH_HAS_GCOV_PROFILE_ALL
Mark Salterd7018842013-10-07 22:07:58 -04009 select ARCH_MIGHT_HAVE_PC_PARPORT
Peter Zijlstra4badad32014-06-06 19:53:16 +020010 select ARCH_SUPPORTS_ATOMIC_RMW
Kim Phillips017f1612013-11-06 05:15:24 +010011 select ARCH_USE_BUILTIN_BSWAP
Will Deacon0cbad9c2013-10-09 17:19:22 +010012 select ARCH_USE_CMPXCHG_LOCKREF
Russell Kingb1b3f492012-10-06 17:12:25 +010013 select ARCH_WANT_IPC_PARSE_VERSION
Stephen Boydee951c62012-10-29 19:19:34 +010014 select BUILDTIME_EXTABLE_SORT if MMU
Russell King171b3f02013-09-12 21:24:42 +010015 select CLONE_BACKWARDS
Russell Kingb1b3f492012-10-06 17:12:25 +010016 select CPU_PM if (SUSPEND || CPU_IDLE)
Will Deacondce5c9e2013-12-17 19:50:16 +010017 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
Laura Abbott36d0fd22014-10-09 15:26:42 -070018 select GENERIC_ALLOCATOR
Uwe Kleine-König4477ca42013-03-21 21:02:37 +010019 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
Russell Kingb1b3f492012-10-06 17:12:25 +010020 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
Russell King171b3f02013-09-12 21:24:42 +010021 select GENERIC_IDLE_POLL_SETUP
Russell Kingb1b3f492012-10-06 17:12:25 +010022 select GENERIC_IRQ_PROBE
23 select GENERIC_IRQ_SHOW
Geert Uytterhoeven7c070052015-04-01 13:37:11 +010024 select GENERIC_IRQ_SHOW_LEVEL
Russell Kingb1b3f492012-10-06 17:12:25 +010025 select GENERIC_PCI_IOMAP
Stephen Boyd38ff87f2013-06-01 23:39:40 -070026 select GENERIC_SCHED_CLOCK
Russell Kingb1b3f492012-10-06 17:12:25 +010027 select GENERIC_SMP_IDLE_THREAD
28 select GENERIC_STRNCPY_FROM_USER
29 select GENERIC_STRNLEN_USER
Marc Zyngiera71b0922014-08-26 11:03:18 +010030 select HANDLE_DOMAIN_IRQ
Russell Kingb1b3f492012-10-06 17:12:25 +010031 select HARDIRQS_SW_RESEND
AKASHI Takahiro7a017722014-02-25 18:16:24 +090032 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
Yalin Wang0b7857d2015-01-16 02:45:55 +010033 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
Rabin Vincent09f05d82012-02-18 17:52:41 +010034 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
Jason Wessel5cbad0e2008-02-20 13:33:40 -060035 select HAVE_ARCH_KGDB
Kees Cook91702172013-11-09 00:51:56 +010036 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
Wade Farnsworth0693bf62012-04-04 16:19:47 +010037 select HAVE_ARCH_TRACEHOOK
Russell Kingb1b3f492012-10-06 17:12:25 +010038 select HAVE_BPF_JIT
Russell King51aaf812014-04-22 22:26:27 +010039 select HAVE_CC_STACKPROTECTOR
Russell King171b3f02013-09-12 21:24:42 +010040 select HAVE_CONTEXT_TRACKING
Russell Kingb1b3f492012-10-06 17:12:25 +010041 select HAVE_C_RECORDMCOUNT
42 select HAVE_DEBUG_KMEMLEAK
43 select HAVE_DMA_API_DEBUG
44 select HAVE_DMA_ATTRS
45 select HAVE_DMA_CONTIGUOUS if MMU
46 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
Will Deacondce5c9e2013-12-17 19:50:16 +010047 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
Russell Kingb1b3f492012-10-06 17:12:25 +010048 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
49 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
50 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
51 select HAVE_GENERIC_DMA_COHERENT
Russell Kingb1b3f492012-10-06 17:12:25 +010052 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
53 select HAVE_IDE if PCI || ISA || PCMCIA
Russell King87c46b62013-05-04 14:38:59 +010054 select HAVE_IRQ_TIME_ACCOUNTING
Russell Kingb1b3f492012-10-06 17:12:25 +010055 select HAVE_KERNEL_GZIP
Kyungsik Leef9b493a2013-07-08 16:01:48 -070056 select HAVE_KERNEL_LZ4
Russell Kingb1b3f492012-10-06 17:12:25 +010057 select HAVE_KERNEL_LZMA
58 select HAVE_KERNEL_LZO
59 select HAVE_KERNEL_XZ
Jon Medhurst856bc352011-06-14 13:09:39 +010060 select HAVE_KPROBES if !XIP_KERNEL
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080061 select HAVE_KRETPROBES if (HAVE_KPROBES)
Russell Kingb1b3f492012-10-06 17:12:25 +010062 select HAVE_MEMBLOCK
Russell King171b3f02013-09-12 21:24:42 +010063 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
Russell Kingb1b3f492012-10-06 17:12:25 +010064 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
Wang Nan0dc016d2015-01-09 14:37:36 +080065 select HAVE_OPTPROBES if !THUMB2_KERNEL
Jamie Iles7ada1892010-02-02 20:24:58 +010066 select HAVE_PERF_EVENTS
Will Deacon49863892013-09-26 12:36:35 +010067 select HAVE_PERF_REGS
68 select HAVE_PERF_USER_STACK_DUMP
Steve Cappera0ad5492014-10-09 15:29:18 -070069 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
Will Deacone513f8b2010-06-25 12:24:53 +010070 select HAVE_REGS_AND_STACK_ACCESS_API
Russell Kingb1b3f492012-10-06 17:12:25 +010071 select HAVE_SYSCALL_TRACEPOINTS
Catalin Marinasaf1839e2012-10-08 16:28:08 -070072 select HAVE_UID16
Kevin Hilman31c1fc82013-09-16 15:28:22 -070073 select HAVE_VIRT_CPU_ACCOUNTING_GEN
Thomas Gleixnerda0ec6f2013-08-14 20:43:17 +010074 select IRQ_FORCED_THREADING
Russell King171b3f02013-09-12 21:24:42 +010075 select MODULES_USE_ELF_REL
Santosh Shilimkar84f452b2013-06-30 00:28:46 -040076 select NO_BOOTMEM
Russell King171b3f02013-09-12 21:24:42 +010077 select OLD_SIGACTION
78 select OLD_SIGSUSPEND3
Russell Kingb1b3f492012-10-06 17:12:25 +010079 select PERF_USE_VMALLOC
80 select RTC_LIB
81 select SYS_SUPPORTS_APM_EMULATION
Russell King171b3f02013-09-12 21:24:42 +010082 # Above selects are sorted alphabetically; please add new ones
83 # according to that. Thanks.
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 help
85 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000086 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000088 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 Europe. There is an ARM Linux project with a web page at
90 <http://www.arm.linux.org.uk/>.
91
Russell King74facff2011-06-02 11:16:22 +010092config ARM_HAS_SG_CHAIN
Laura Abbott308c09f2014-08-08 14:23:25 -070093 select ARCH_HAS_SG_CHAIN
Russell King74facff2011-06-02 11:16:22 +010094 bool
95
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +020096config NEED_SG_DMA_LENGTH
97 bool
98
99config ARM_DMA_USE_IOMMU
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200100 bool
Russell Kingb1b3f492012-10-06 17:12:25 +0100101 select ARM_HAS_SG_CHAIN
102 select NEED_SG_DMA_LENGTH
Marek Szyprowski4ce63fc2012-05-16 15:48:21 +0200103
Seung-Woo Kim60460ab2013-02-06 13:21:14 +0900104if ARM_DMA_USE_IOMMU
105
106config ARM_DMA_IOMMU_ALIGNMENT
107 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
108 range 4 9
109 default 8
110 help
111 DMA mapping framework by default aligns all buffers to the smallest
112 PAGE_SIZE order which is greater than or equal to the requested buffer
113 size. This works well for buffers up to a few hundreds kilobytes, but
114 for larger buffers it just a waste of address space. Drivers which has
115 relatively small addressing window (like 64Mib) might run out of
116 virtual space with just a few allocations.
117
118 With this parameter you can specify the maximum PAGE_SIZE order for
119 DMA IOMMU buffers. Larger buffers will be aligned only to this
120 specified order. The order is expressed as a power of two multiplied
121 by the PAGE_SIZE.
122
123endif
124
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100125config MIGHT_HAVE_PCI
126 bool
127
Ralf Baechle75e71532007-02-09 17:08:58 +0000128config SYS_SUPPORTS_APM_EMULATION
129 bool
130
Linus Walleijbc581772009-09-15 17:30:37 +0100131config HAVE_TCM
132 bool
133 select GENERIC_ALLOCATOR
134
Russell Kinge119bff2010-01-10 17:23:29 +0000135config HAVE_PROC_CPU
136 bool
137
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700138config NO_IOPORT_MAP
Al Viro5ea81762007-02-11 15:41:31 +0000139 bool
Al Viro5ea81762007-02-11 15:41:31 +0000140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141config EISA
142 bool
143 ---help---
144 The Extended Industry Standard Architecture (EISA) bus was
145 developed as an open alternative to the IBM MicroChannel bus.
146
147 The EISA bus provided some of the features of the IBM MicroChannel
148 bus while maintaining backward compatibility with cards made for
149 the older ISA bus. The EISA bus saw limited use between 1988 and
150 1995 when it was made obsolete by the PCI bus.
151
152 Say Y here if you are building a kernel for an EISA-based machine.
153
154 Otherwise, say N.
155
156config SBUS
157 bool
158
Russell Kingf16fb1e2007-04-28 09:59:37 +0100159config STACKTRACE_SUPPORT
160 bool
161 default y
162
Nicolas Pitref76e9152008-04-24 01:31:46 -0400163config HAVE_LATENCYTOP_SUPPORT
164 bool
165 depends on !SMP
166 default y
167
Russell Kingf16fb1e2007-04-28 09:59:37 +0100168config LOCKDEP_SUPPORT
169 bool
170 default y
171
Russell King7ad1bcb2006-08-27 12:07:02 +0100172config TRACE_IRQFLAGS_SUPPORT
173 bool
174 default y
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176config RWSEM_XCHGADD_ALGORITHM
177 bool
Will Deacon8a874112014-05-02 17:06:19 +0100178 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
David Howellsf0d1b0b2006-12-08 02:37:49 -0800180config ARCH_HAS_ILOG2_U32
181 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800182
183config ARCH_HAS_ILOG2_U64
184 bool
David Howellsf0d1b0b2006-12-08 02:37:49 -0800185
Eduardo Valentin4a1b5732013-06-13 22:58:52 +0100186config ARCH_HAS_BANDGAP
187 bool
188
Akinobu Mitab89c3b12006-03-26 01:39:19 -0800189config GENERIC_HWEIGHT
190 bool
191 default y
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193config GENERIC_CALIBRATE_DELAY
194 bool
195 default y
196
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100197config ARCH_MAY_HAVE_PC_FDC
198 bool
199
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800200config ZONE_DMA
201 bool
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800202
FUJITA Tomonoriccd7ab72010-03-10 15:23:23 -0800203config NEED_DMA_MAP_STATE
204 def_bool y
205
David A. Longc7edc9e2014-03-07 11:23:04 -0500206config ARCH_SUPPORTS_UPROBES
207 def_bool y
208
Rob Herring58af4a22012-03-20 14:33:01 -0500209config ARCH_HAS_DMA_SET_COHERENT_MASK
210 bool
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212config GENERIC_ISA_DMA
213 bool
214
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215config FIQ
216 bool
217
Rob Herring13a50452012-02-07 09:28:22 -0600218config NEED_RET_TO_USER
219 bool
220
Al Viro034d2f52005-12-19 16:27:59 -0500221config ARCH_MTD_XIP
222 bool
223
Hyok S. Choic760fc12006-03-27 15:18:50 +0100224config VECTORS_BASE
225 hex
Hyok S. Choi6afd6fa2006-09-28 21:46:34 +0900226 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
Hyok S. Choic760fc12006-03-27 15:18:50 +0100227 default DRAM_BASE if REMAP_VECTORS_TO_RAM
228 default 0x00000000
229 help
Russell King19accfd2013-07-04 11:40:32 +0100230 The base address of exception vectors. This must be two pages
231 in size.
Hyok S. Choic760fc12006-03-27 15:18:50 +0100232
Russell Kingdc21af92011-01-04 19:09:43 +0000233config ARM_PATCH_PHYS_VIRT
Russell Kingc1beced2011-08-10 10:23:45 +0100234 bool "Patch physical to virtual translations at runtime" if EMBEDDED
235 default y
Nicolas Pitreb511d752011-02-21 06:53:35 +0100236 depends on !XIP_KERNEL && MMU
Russell Kingdc21af92011-01-04 19:09:43 +0000237 depends on !ARCH_REALVIEW || !SPARSEMEM
238 help
Russell King111e9a52011-05-12 10:02:42 +0100239 Patch phys-to-virt and virt-to-phys translation functions at
240 boot and module load time according to the position of the
241 kernel in system memory.
Russell Kingdc21af92011-01-04 19:09:43 +0000242
Russell King111e9a52011-05-12 10:02:42 +0100243 This can only be used with non-XIP MMU kernels where the base
Nicolas Pitredaece592011-08-12 00:14:29 +0100244 of physical memory is at a 16MB boundary.
Russell Kingdc21af92011-01-04 19:09:43 +0000245
Russell Kingc1beced2011-08-10 10:23:45 +0100246 Only disable this option if you know that you do not require
247 this feature (eg, building a kernel for a single machine) and
248 you need to shrink the kernel to the minimal size.
249
Rob Herringc334bc12012-03-04 22:03:33 -0600250config NEED_MACH_IO_H
251 bool
252 help
253 Select this when mach/io.h is required to provide special
254 definitions for this platform. The need for mach/io.h should
255 be avoided when possible.
256
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400257config NEED_MACH_MEMORY_H
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400258 bool
Russell King111e9a52011-05-12 10:02:42 +0100259 help
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400260 Select this when mach/memory.h is required to provide special
261 definitions for this platform. The need for mach/memory.h should
262 be avoided when possible.
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400263
264config PHYS_OFFSET
Nicolas Pitre974c0722011-12-02 23:09:42 +0100265 hex "Physical address of main memory" if MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100266 depends on !ARM_PATCH_PHYS_VIRT
Nicolas Pitre974c0722011-12-02 23:09:42 +0100267 default DRAM_BASE if !MMU
Uwe Kleine-Königc6f54a92014-07-23 20:37:43 +0100268 default 0x00000000 if ARCH_EBSA110 || \
269 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
270 ARCH_FOOTBRIDGE || \
271 ARCH_INTEGRATOR || \
272 ARCH_IOP13XX || \
273 ARCH_KS8695 || \
274 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
275 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
276 default 0x20000000 if ARCH_S5PV210
277 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
278 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
279 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
280 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
281 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
Nicolas Pitre1b9f95f2011-07-05 22:52:51 -0400282 help
283 Please provide the physical address corresponding to the
284 location of main memory in your system.
Russell Kingcada3c02011-01-04 19:39:29 +0000285
Simon Glass87e040b2011-08-16 23:44:26 +0100286config GENERIC_BUG
287 def_bool y
288 depends on BUG
289
Kirill A. Shutemov1bcad262015-04-14 15:45:42 -0700290config PGTABLE_LEVELS
291 int
292 default 3 if ARM_LPAE
293 default 2
294
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295source "init/Kconfig"
296
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700297source "kernel/Kconfig.freezer"
298
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299menu "System Type"
300
Hyok S. Choi3c427972009-07-24 12:35:00 +0100301config MMU
302 bool "MMU-based Paged Memory Management Support"
303 default y
304 help
305 Select if you want MMU-based virtualised addressing space
306 support by paged memory management. If unsure, say 'Y'.
307
Russell Kingccf50e22010-03-15 19:03:06 +0000308#
309# The "ARM system type" choice list is ordered alphabetically by option
310# text. Please add new entries in the option alphabetic order.
311#
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312choice
313 prompt "ARM system type"
Arnd Bergmann1420b222013-02-14 13:33:36 +0100314 default ARCH_VERSATILE if !MMU
315 default ARCH_MULTIPLATFORM if MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
Rob Herring387798b2012-09-06 13:41:12 -0500317config ARCH_MULTIPLATFORM
318 bool "Allow multiple platforms to be selected"
Russell Kingb1b3f492012-10-06 17:12:25 +0100319 depends on MMU
Rob Herringddb902c2013-11-22 09:29:37 -0600320 select ARCH_WANT_OPTIONAL_GPIOLIB
Olof Johansson42dc8362014-03-09 12:46:59 -0700321 select ARM_HAS_SG_CHAIN
Rob Herring387798b2012-09-06 13:41:12 -0500322 select ARM_PATCH_PHYS_VIRT
323 select AUTO_ZRELADDR
Rob Herring6d0add42014-04-16 08:42:13 -0500324 select CLKSRC_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600325 select COMMON_CLK
Rob Herringddb902c2013-11-22 09:29:37 -0600326 select GENERIC_CLOCKEVENTS
Will Deacon08d38be2014-05-27 23:26:35 +0100327 select MIGHT_HAVE_PCI
Rob Herring387798b2012-09-06 13:41:12 -0500328 select MULTI_IRQ_HANDLER
Dinh Nguyen66314222012-07-18 16:07:18 -0600329 select SPARSE_IRQ
330 select USE_OF
Dinh Nguyen66314222012-07-18 16:07:18 -0600331
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100332config ARCH_REALVIEW
333 bool "ARM Ltd. RealView family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100334 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100335 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100336 select ARM_TIMER_SP804
Linus Walleijf9a6aa42012-08-06 18:32:08 +0200337 select COMMON_CLK
338 select COMMON_CLK_VERSATILE
Catalin Marinasae30cea2008-02-04 17:26:55 +0100339 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100340 select GPIO_PL061 if GPIOLIB
341 select ICST
342 select NEED_MACH_MEMORY_H
Russell Kingf4b8b312010-01-14 12:48:06 +0000343 select PLAT_VERSATILE
Pawel Moll81cc3f82014-11-25 18:17:34 +0000344 select PLAT_VERSATILE_SCHED_CLOCK
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100345 help
346 This enables support for ARM Ltd RealView boards.
347
348config ARCH_VERSATILE
349 bool "ARM Ltd. Versatile family"
Russell Kingb1b3f492012-10-06 17:12:25 +0100350 select ARCH_WANT_OPTIONAL_GPIOLIB
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100351 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100352 select ARM_TIMER_SP804
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100353 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100354 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100355 select GENERIC_CLOCKEVENTS
Kyungmin Parkaa3831c2011-07-18 16:34:54 +0900356 select HAVE_MACH_CLKDEV
Russell Kingc5a0adb2010-01-16 20:16:10 +0000357 select ICST
Russell Kingf4b8b312010-01-14 12:48:06 +0000358 select PLAT_VERSATILE
Russell Kingb1b3f492012-10-06 17:12:25 +0100359 select PLAT_VERSATILE_CLOCK
Pawel Moll81cc3f82014-11-25 18:17:34 +0000360 select PLAT_VERSATILE_SCHED_CLOCK
Linus Walleij2389d502012-10-31 22:04:31 +0100361 select VERSATILE_FPGA_IRQ
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100362 help
363 This enables support for ARM Ltd Versatile board.
364
Russell King93e22562012-10-12 14:20:52 +0100365config ARCH_CLPS711X
366 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
Alexander Shiyana3b8d4a2012-10-09 20:05:56 +0400367 select ARCH_REQUIRE_GPIOLIB
Alexander Shiyanea7d1bc2012-11-17 17:57:11 +0400368 select AUTO_ZRELADDR
Alexander Shiyanc99f72a2013-05-13 21:07:32 +0400369 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100370 select COMMON_CLK
371 select CPU_ARM720T
Alexander Shiyan4a8355c2012-10-10 19:45:27 +0400372 select GENERIC_CLOCKEVENTS
Alexander Shiyan65976192013-05-13 21:07:36 +0400373 select MFD_SYSCON
Alexander Shiyane4e3a372014-08-19 16:31:15 +0400374 select SOC_BUS
Russell King93e22562012-10-12 14:20:52 +0100375 help
376 Support for Cirrus Logic 711x/721x/731x based boards.
377
Russell King788c9702009-04-26 14:21:59 +0100378config ARCH_GEMINI
379 bool "Cortina Systems Gemini"
Russell King788c9702009-04-26 14:21:59 +0100380 select ARCH_REQUIRE_GPIOLIB
Linus Walleijf3372c02013-10-01 12:57:20 +0200381 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100382 select CPU_FA526
Linus Walleijf3372c02013-10-01 12:57:20 +0200383 select GENERIC_CLOCKEVENTS
Russell King788c9702009-04-26 14:21:59 +0100384 help
385 Support for the Cortina Systems Gemini family SoCs
386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387config ARCH_EBSA110
388 bool "EBSA-110"
Russell Kingb1b3f492012-10-06 17:12:25 +0100389 select ARCH_USES_GETTIMEOFFSET
Russell Kingc7508152008-10-26 10:55:14 +0000390 select CPU_SA110
Russell Kingf7e68bb2005-05-05 14:49:01 +0100391 select ISA
Rob Herringc334bc12012-03-04 22:03:33 -0600392 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400393 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700394 select NO_IOPORT_MAP
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 help
396 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000397 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 Ethernet interface, two PCMCIA sockets, two serial ports and a
399 parallel port.
400
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100401config ARCH_EFM32
402 bool "Energy Micro efm32"
403 depends on !MMU
404 select ARCH_REQUIRE_GPIOLIB
405 select ARM_NVIC
Russell King51aaf812014-04-22 22:26:27 +0100406 select AUTO_ZRELADDR
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100407 select CLKSRC_OF
408 select COMMON_CLK
409 select CPU_V7M
410 select GENERIC_CLOCKEVENTS
411 select NO_DMA
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700412 select NO_IOPORT_MAP
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +0100413 select SPARSE_IRQ
414 select USE_OF
415 help
416 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
417 processors.
418
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000419config ARCH_EP93XX
420 bool "EP93xx-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100421 select ARCH_HAS_HOLES_MEMORYMODEL
422 select ARCH_REQUIRE_GPIOLIB
423 select ARCH_USES_GETTIMEOFFSET
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000424 select ARM_AMBA
425 select ARM_VIC
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100426 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100427 select CPU_ARM920T
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000428 help
429 This enables support for the Cirrus EP93xx series of CPUs.
430
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431config ARCH_FOOTBRIDGE
432 bool "FootBridge"
Russell Kingc7508152008-10-26 10:55:14 +0000433 select CPU_SA110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 select FOOTBRIDGE
Russell King4e8d7632011-01-28 21:00:39 +0000435 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200436 select HAVE_IDE
Rob Herring8ef6e622012-03-01 20:48:12 -0600437 select NEED_MACH_IO_H if !MMU
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400438 select NEED_MACH_MEMORY_H
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000439 help
440 Support for systems based on the DC21285 companion chip
441 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100443config ARCH_NETX
444 bool "Hilscher NetX based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100445 select ARM_VIC
Russell King234b6ced2011-05-08 14:09:47 +0100446 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000447 select CPU_ARM926T
Uwe Kleine-König2fcfe6b2008-12-09 21:57:24 +0100448 select GENERIC_CLOCKEVENTS
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000449 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100450 This enables support for systems based on the Hilscher NetX Soc
451
Russell King3b938be2007-05-12 11:25:44 +0100452config ARCH_IOP13XX
453 bool "IOP13xx-based"
454 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100455 select CPU_XSC3
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400456 select NEED_MACH_MEMORY_H
Rob Herring13a50452012-02-07 09:28:22 -0600457 select NEED_RET_TO_USER
Russell Kingb1b3f492012-10-06 17:12:25 +0100458 select PCI
459 select PLAT_IOP
460 select VMSPLIT_1G
Thomas Gleixner37ebbcf2014-05-07 15:44:04 +0000461 select SPARSE_IRQ
Russell King3b938be2007-05-12 11:25:44 +0100462 help
463 Support for Intel's IOP13XX (XScale) family of processors.
464
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100465config ARCH_IOP32X
466 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100467 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100468 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000469 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200470 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600471 select NEED_RET_TO_USER
Russell Kingf7e68bb2005-05-05 14:49:01 +0100472 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100473 select PLAT_IOP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000474 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100475 Support for Intel's 80219 and IOP32X (XScale) family of
476 processors.
477
478config ARCH_IOP33X
479 bool "IOP33x-based"
480 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100481 select ARCH_REQUIRE_GPIOLIB
Russell Kingc7508152008-10-26 10:55:14 +0000482 select CPU_XSCALE
Linus Walleije9004f52013-09-09 11:59:51 +0200483 select GPIO_IOP
Rob Herring13a50452012-02-07 09:28:22 -0600484 select NEED_RET_TO_USER
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100485 select PCI
Russell Kingb1b3f492012-10-06 17:12:25 +0100486 select PLAT_IOP
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100487 help
488 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
Russell King3b938be2007-05-12 11:25:44 +0100490config ARCH_IXP4XX
491 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100492 depends on MMU
Rob Herring58af4a22012-03-20 14:33:01 -0500493 select ARCH_HAS_DMA_SET_COHERENT_MASK
Russell Kingb1b3f492012-10-06 17:12:25 +0100494 select ARCH_REQUIRE_GPIOLIB
Russell King51aaf812014-04-22 22:26:27 +0100495 select ARCH_SUPPORTS_BIG_ENDIAN
Russell King234b6ced2011-05-08 14:09:47 +0100496 select CLKSRC_MMIO
Russell Kingc7508152008-10-26 10:55:14 +0000497 select CPU_XSCALE
Russell Kingb1b3f492012-10-06 17:12:25 +0100498 select DMABOUNCE if PCI
Russell King3b938be2007-05-12 11:25:44 +0100499 select GENERIC_CLOCKEVENTS
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +0100500 select MIGHT_HAVE_PCI
Rob Herringc334bc12012-03-04 22:03:33 -0600501 select NEED_MACH_IO_H
Florian Fainelli9296d942013-04-09 14:29:26 +0200502 select USB_EHCI_BIG_ENDIAN_DESC
Russell King171b3f02013-09-12 21:24:42 +0100503 select USB_EHCI_BIG_ENDIAN_MMIO
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100504 help
Russell King3b938be2007-05-12 11:25:44 +0100505 Support for Intel's IXP4XX (XScale) family of processors.
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100506
Saeed Bisharaedabd382009-08-06 15:12:43 +0300507config ARCH_DOVE
508 bool "Marvell Dove"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300509 select ARCH_REQUIRE_GPIOLIB
Sebastian Hesselbarth756b2532013-05-02 19:56:12 +0100510 select CPU_PJ4
Saeed Bisharaedabd382009-08-06 15:12:43 +0300511 select GENERIC_CLOCKEVENTS
Russell King0f81bd42012-09-09 20:34:13 +0100512 select MIGHT_HAVE_PCI
Russell King171b3f02013-09-12 21:24:42 +0100513 select MVEBU_MBUS
Sebastian Hesselbarth9139acd2012-11-19 10:39:55 +0100514 select PINCTRL
515 select PINCTRL_DOVE
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200516 select PLAT_ORION_LEGACY
Saeed Bisharaedabd382009-08-06 15:12:43 +0300517 help
518 Support for the Marvell Dove SoC 88AP510
519
Russell King788c9702009-04-26 14:21:59 +0100520config ARCH_MV78XX0
521 bool "Marvell MV78xx0"
Erik Benadaa8865652009-05-28 17:08:55 -0700522 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100523 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100524 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100525 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100526 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200527 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100528 help
529 Support for the following Marvell MV78xx0 series SoCs:
530 MV781x0, MV782x0.
531
532config ARCH_ORION5X
533 bool "Marvell Orion"
534 depends on MMU
Erik Benadaa8865652009-05-28 17:08:55 -0700535 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100536 select CPU_FEROCEON
Russell King788c9702009-04-26 14:21:59 +0100537 select GENERIC_CLOCKEVENTS
Russell King171b3f02013-09-12 21:24:42 +0100538 select MVEBU_MBUS
Russell Kingb1b3f492012-10-06 17:12:25 +0100539 select PCI
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200540 select PLAT_ORION_LEGACY
Russell King788c9702009-04-26 14:21:59 +0100541 help
542 Support for the following Marvell Orion 5x series SoCs:
543 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
544 Orion-2 (5281), Orion-1-90 (6183).
545
546config ARCH_MMP
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500547 bool "Marvell PXA168/910/MMP2"
Russell King788c9702009-04-26 14:21:59 +0100548 depends on MMU
Russell King788c9702009-04-26 14:21:59 +0100549 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100550 select CLKDEV_LOOKUP
Russell Kingb1b3f492012-10-06 17:12:25 +0100551 select GENERIC_ALLOCATOR
Russell King788c9702009-04-26 14:21:59 +0100552 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800553 select GPIO_PXA
Haojian Zhuangc24b3112012-04-12 19:02:02 +0800554 select IRQ_DOMAIN
Haojian Zhuang0f374562013-04-21 16:53:02 +0800555 select MULTI_IRQ_HANDLER
Axel Lin7c8f86a2012-11-28 14:42:35 +0800556 select PINCTRL
Russell King788c9702009-04-26 14:21:59 +0100557 select PLAT_PXA
Haojian Zhuang0bd86962010-09-08 09:42:42 -0400558 select SPARSE_IRQ
Russell King788c9702009-04-26 14:21:59 +0100559 help
Haojian Zhuang2f7e8fa2009-12-04 09:41:28 -0500560 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
Russell King788c9702009-04-26 14:21:59 +0100561
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100562config ARCH_KS8695
563 bool "Micrel/Kendin KS8695"
Hartley Sweeten98830bc2010-05-17 17:18:10 +0100564 select ARCH_REQUIRE_GPIOLIB
Linus Walleijc7e783d2012-08-29 20:27:22 +0200565 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100566 select CPU_ARM922T
Linus Walleijc7e783d2012-08-29 20:27:22 +0200567 select GENERIC_CLOCKEVENTS
Russell Kingb1b3f492012-10-06 17:12:25 +0100568 select NEED_MACH_MEMORY_H
Andrew Victorc53c9cf2007-05-11 21:01:28 +0100569 help
570 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
571 System-on-Chip devices.
572
Russell King788c9702009-04-26 14:21:59 +0100573config ARCH_W90X900
574 bool "Nuvoton W90X900 CPU"
wanzongshunc52d3d62009-06-10 15:49:32 +0100575 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100576 select CLKDEV_LOOKUP
Russell King6fa5d5f2011-05-08 15:34:39 +0100577 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100578 select CPU_ARM926T
wanzongshun58b53692009-08-14 15:36:44 +0100579 select GENERIC_CLOCKEVENTS
Lennert Buytenhek777f9be2008-06-22 22:45:02 +0200580 help
wanzongshuna8bc4ea2009-08-14 15:38:29 +0100581 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
582 At present, the w90x900 has been renamed nuc900, regarding
583 the ARM series product line, you can login the following
584 link address to know more.
585
586 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
587 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400588
Russell King93e22562012-10-12 14:20:52 +0100589config ARCH_LPC32XX
590 bool "NXP LPC32XX"
591 select ARCH_REQUIRE_GPIOLIB
592 select ARM_AMBA
Russell King40737232011-01-06 22:32:52 +0000593 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100594 select CLKSRC_MMIO
Russell King93e22562012-10-12 14:20:52 +0100595 select CPU_ARM926T
596 select GENERIC_CLOCKEVENTS
597 select HAVE_IDE
Russell King93e22562012-10-12 14:20:52 +0100598 select USE_OF
599 help
600 Support for the NXP LPC32XX family of processors
601
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602config ARCH_PXA
eric miao2c8086a2007-09-11 19:13:17 -0700603 bool "PXA2xx/PXA3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100604 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100605 select ARCH_MTD_XIP
606 select ARCH_REQUIRE_GPIOLIB
607 select ARM_CPU_SUSPEND if PM
608 select AUTO_ZRELADDR
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100609 select CLKDEV_LOOKUP
Russell King234b6ced2011-05-08 14:09:47 +0100610 select CLKSRC_MMIO
Robert Jarzmik6f6caea2014-07-14 18:52:03 +0200611 select CLKSRC_OF
Eric Miao981d0f32007-07-24 01:22:43 +0100612 select GENERIC_CLOCKEVENTS
Haojian Zhuang157d2642011-10-17 20:37:52 +0800613 select GPIO_PXA
Russell Kingb1b3f492012-10-06 17:12:25 +0100614 select HAVE_IDE
Robert Jarzmikd6cf30c2015-02-14 22:41:56 +0100615 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100616 select MULTI_IRQ_HANDLER
Eric Miaobd5ce432009-01-20 12:06:01 +0800617 select PLAT_PXA
Haojian Zhuang6ac6b812010-08-20 15:23:59 +0800618 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000619 help
eric miao2c8086a2007-09-11 19:13:17 -0700620 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100622config ARCH_SHMOBILE_LEGACY
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100623 bool "Renesas ARM SoCs (non-multiplatform)"
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +0100624 select ARCH_SHMOBILE
Uwe Kleine-König91942d12014-07-23 20:37:44 +0100625 select ARM_PATCH_PHYS_VIRT if MMU
Paul Mundt5e93c6b2011-01-07 10:29:26 +0900626 select CLKDEV_LOOKUP
Magnus Damm0ed82bc2014-08-25 12:45:41 +0900627 select CPU_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100628 select GENERIC_CLOCKEVENTS
Stephen Boyd4c3ffff2013-02-27 15:28:14 -0800629 select HAVE_ARM_SCU if SMP
Stephen Boyda894fcc2013-02-15 16:02:20 -0800630 select HAVE_ARM_TWD if SMP
Dave Martin3b556582011-12-07 15:38:04 +0000631 select HAVE_SMP
Dave Martince5ea9f2011-11-29 15:56:19 +0000632 select MIGHT_HAVE_CACHE_L2X0
Magnus Damm60f14352010-12-28 08:26:52 +0000633 select MULTI_IRQ_HANDLER
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700634 select NO_IOPORT_MAP
Laurent Pinchart2cd3c922013-05-31 05:00:27 +0200635 select PINCTRL
Russell Kingb1b3f492012-10-06 17:12:25 +0100636 select PM_GENERIC_DOMAINS if PM
Magnus Damm0cdc23d2014-08-25 12:45:50 +0900637 select SH_CLK_CPG
Russell Kingb1b3f492012-10-06 17:12:25 +0100638 select SPARSE_IRQ
Magnus Dammc793c1b2010-02-05 11:14:49 +0000639 help
Laurent Pinchart0d9fd612013-11-28 17:27:29 +0100640 Support for Renesas ARM SoC platforms using a non-multiplatform
641 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
642 and RZ families.
Magnus Dammc793c1b2010-02-05 11:14:49 +0000643
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644config ARCH_RPC
645 bool "RiscPC"
646 select ARCH_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100647 select ARCH_MAY_HAVE_PC_FDC
Russell King07f841b2008-10-01 17:11:06 +0100648 select ARCH_SPARSEMEM_ENABLE
John Stultz5cfc8ee2010-03-24 00:22:36 +0000649 select ARCH_USES_GETTIMEOFFSET
Arnd Bergmannfa04e202014-02-26 17:39:12 +0100650 select CPU_SA110
Russell Kingb1b3f492012-10-06 17:12:25 +0100651 select FIQ
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200652 select HAVE_IDE
Russell Kingb1b3f492012-10-06 17:12:25 +0100653 select HAVE_PATA_PLATFORM
654 select ISA_DMA_API
Rob Herringc334bc12012-03-04 22:03:33 -0600655 select NEED_MACH_IO_H
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400656 select NEED_MACH_MEMORY_H
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700657 select NO_IOPORT_MAP
Arnd Bergmannb4811ba2013-03-13 17:36:37 +0100658 select VIRT_TO_BUS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 help
660 On the Acorn Risc-PC, Linux can support the internal IDE disk and
661 CD-ROM interface, serial and parallel port, and the floppy drive.
662
663config ARCH_SA1100
664 bool "SA1100-based"
Russell Kingb1b3f492012-10-06 17:12:25 +0100665 select ARCH_MTD_XIP
Michael Buesch7444a722008-07-25 01:46:11 -0700666 select ARCH_REQUIRE_GPIOLIB
Russell Kingb1b3f492012-10-06 17:12:25 +0100667 select ARCH_SPARSEMEM_ENABLE
668 select CLKDEV_LOOKUP
669 select CLKSRC_MMIO
670 select CPU_FREQ
671 select CPU_SA1100
672 select GENERIC_CLOCKEVENTS
Arnd Bergmannd0ee9f42011-10-01 21:10:32 +0200673 select HAVE_IDE
Dmitry Eremin-Solenikov1eca42b2014-11-28 15:56:54 +0100674 select IRQ_DOMAIN
Russell Kingb1b3f492012-10-06 17:12:25 +0100675 select ISA
Dmitry Eremin-Solenikovaffcab32014-11-28 15:55:16 +0100676 select MULTI_IRQ_HANDLER
Nicolas Pitre0cdc8b92011-09-02 22:26:55 -0400677 select NEED_MACH_MEMORY_H
Russell King375dec92012-02-23 14:29:33 +0100678 select SPARSE_IRQ
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000679 help
680 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900682config ARCH_S3C24XX
683 bool "Samsung S3C24XX SoCs"
Kukjin Kim53650432013-04-04 09:04:30 +0900684 select ARCH_REQUIRE_GPIOLIB
Arnd Bergmann335cce72014-03-13 14:11:16 +0100685 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100686 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200687 select CLKSRC_SAMSUNG_PWM
Romain Naour7f78b6e2013-01-09 18:47:04 -0800688 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900689 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900690 select HAVE_S3C2410_I2C if I2C
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900691 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100692 select HAVE_S3C_RTC if RTC_CLASS
Heiko Stuebner17453dd2013-03-07 12:38:25 +0900693 select MULTI_IRQ_HANDLER
Rob Herringc334bc12012-03-04 22:03:33 -0600694 select NEED_MACH_IO_H
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900695 select SAMSUNG_ATAGS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 help
Kukjin Kimb130d5c2012-02-03 14:29:23 +0900697 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
698 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
699 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
700 Samsung SMDK2410 development board (and derivatives).
Ben Dooks63b1f512010-04-30 16:32:26 +0900701
Ben Dooksa08ab632008-10-21 14:06:39 +0100702config ARCH_S3C64XX
703 bool "Samsung S3C64XX"
Ben Dooks89f0ce72010-01-26 15:49:15 +0900704 select ARCH_REQUIRE_GPIOLIB
Tomasz Figa1db02872013-10-16 21:10:54 +0200705 select ARM_AMBA
Russell Kingb1b3f492012-10-06 17:12:25 +0100706 select ARM_VIC
Arnd Bergmann335cce72014-03-13 14:11:16 +0100707 select ATAGS
Russell Kingb1b3f492012-10-06 17:12:25 +0100708 select CLKDEV_LOOKUP
Tomasz Figa42805062013-04-28 02:25:01 +0200709 select CLKSRC_SAMSUNG_PWM
Pankaj Dubeyccecba32014-05-08 13:07:09 +0900710 select COMMON_CLK_SAMSUNG
Tomasz Figa70bacad2013-10-21 06:56:51 +0900711 select CPU_V6K
Romain Naour04a49b72013-01-09 18:47:04 -0800712 select GENERIC_CLOCKEVENTS
Tomasz Figa880cf072013-06-19 01:22:20 +0900713 select GPIO_SAMSUNG
Kukjin Kim20676c12010-11-13 16:08:32 +0900714 select HAVE_S3C2410_I2C if I2C
Kyungmin Parkc39d8d52010-11-13 16:01:59 +0900715 select HAVE_S3C2410_WATCHDOG if WATCHDOG
Russell Kingb1b3f492012-10-06 17:12:25 +0100716 select HAVE_TCM
Uwe Kleine-Königce816fa2014-04-07 15:39:19 -0700717 select NO_IOPORT_MAP
Russell Kingb1b3f492012-10-06 17:12:25 +0100718 select PLAT_SAMSUNG
Arnd Bergmann4ab75a32014-03-13 14:35:38 +0100719 select PM_GENERIC_DOMAINS if PM
Russell Kingb1b3f492012-10-06 17:12:25 +0100720 select S3C_DEV_NAND
721 select S3C_GPIO_TRACK
Tomasz Figacd8dc7a2013-06-15 09:01:49 +0900722 select SAMSUNG_ATAGS
Tomasz Figa6e2d9e92013-10-06 09:06:27 +0900723 select SAMSUNG_WAKEMASK
Tomasz Figa88f59732013-06-17 23:45:37 +0900724 select SAMSUNG_WDT_RESET
Ben Dooksa08ab632008-10-21 14:06:39 +0100725 help
726 Samsung S3C64XX series based systems
727
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100728config ARCH_DAVINCI
729 bool "TI DaVinci"
Russell Kingb1b3f492012-10-06 17:12:25 +0100730 select ARCH_HAS_HOLES_MEMORYMODEL
David Brownelldce11152008-09-07 23:41:04 -0700731 select ARCH_REQUIRE_GPIOLIB
Jean-Christop PLAGNIOL-VILLARD6d803ba2010-11-17 10:04:33 +0100732 select CLKDEV_LOOKUP
David Brownell20e99692009-05-07 09:31:42 -0700733 select GENERIC_ALLOCATOR
Russell Kingb1b3f492012-10-06 17:12:25 +0100734 select GENERIC_CLOCKEVENTS
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100735 select GENERIC_IRQ_CHIP
Russell Kingb1b3f492012-10-06 17:12:25 +0100736 select HAVE_IDE
Matt Porter3ad7a422013-03-06 11:15:31 -0500737 select TI_PRIV_EDMA
Sekhar Nori689e3312012-08-28 15:27:52 +0530738 select USE_OF
Russell Kingb1b3f492012-10-06 17:12:25 +0100739 select ZONE_DMA
Kevin Hilman7c6337e2007-04-30 19:37:19 +0100740 help
741 Support for TI's DaVinci platform.
742
Tony Lindgrena0694862013-01-11 11:24:20 -0800743config ARCH_OMAP1
744 bool "TI OMAP1"
Arnd Bergmann00a36692012-06-07 18:50:51 -0600745 depends on MMU
Russell Kingb1b3f492012-10-06 17:12:25 +0100746 select ARCH_HAS_HOLES_MEMORYMODEL
Tony Lindgrena0694862013-01-11 11:24:20 -0800747 select ARCH_OMAP
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100748 select ARCH_REQUIRE_GPIOLIB
Tony Priske9a91de2012-08-03 21:00:06 +1200749 select CLKDEV_LOOKUP
viresh kumarcee37e52010-04-01 12:31:05 +0100750 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100751 select GENERIC_CLOCKEVENTS
Tony Lindgrena0694862013-01-11 11:24:20 -0800752 select GENERIC_IRQ_CHIP
Tony Lindgrena0694862013-01-11 11:24:20 -0800753 select HAVE_IDE
754 select IRQ_DOMAIN
755 select NEED_MACH_IO_H if PCCARD
756 select NEED_MACH_MEMORY_H
Alexey Charkov21f47fb2010-12-23 13:11:21 +0100757 help
Tony Lindgrena0694862013-01-11 11:24:20 -0800758 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
Binghua Duan02c981c2011-07-08 17:40:12 +0800759
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760endchoice
761
Rob Herring387798b2012-09-06 13:41:12 -0500762menu "Multiple platform selection"
763 depends on ARCH_MULTIPLATFORM
764
765comment "CPU Core family selection"
766
Arnd Bergmannf8afae42014-03-25 22:19:00 +0100767config ARCH_MULTI_V4
768 bool "ARMv4 based platforms (FA526)"
769 depends on !ARCH_MULTI_V6_V7
770 select ARCH_MULTI_V4_V5
771 select CPU_FA526
772
Rob Herring387798b2012-09-06 13:41:12 -0500773config ARCH_MULTI_V4T
774 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500775 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100776 select ARCH_MULTI_V4_V5
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200777 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
778 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
779 CPU_ARM925T || CPU_ARM940T)
Rob Herring387798b2012-09-06 13:41:12 -0500780
781config ARCH_MULTI_V5
782 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
Rob Herring387798b2012-09-06 13:41:12 -0500783 depends on !ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100784 select ARCH_MULTI_V4_V5
Andrew Lunn12567bb2014-02-22 20:14:54 +0100785 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
Arnd Bergmann24e860f2013-06-03 15:38:58 +0200786 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
787 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
Rob Herring387798b2012-09-06 13:41:12 -0500788
789config ARCH_MULTI_V4_V5
790 bool
791
792config ARCH_MULTI_V6
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800793 bool "ARMv6 based platforms (ARM11)"
Rob Herring387798b2012-09-06 13:41:12 -0500794 select ARCH_MULTI_V6_V7
Rob Herring42f47542014-01-31 14:26:04 -0600795 select CPU_V6K
Rob Herring387798b2012-09-06 13:41:12 -0500796
797config ARCH_MULTI_V7
Stephen Boyd8dda05c2013-03-04 15:19:19 -0800798 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
Rob Herring387798b2012-09-06 13:41:12 -0500799 default y
800 select ARCH_MULTI_V6_V7
Russell Kingb1b3f492012-10-06 17:12:25 +0100801 select CPU_V7
Rob Herring90bc8ac2014-01-31 15:32:02 -0600802 select HAVE_SMP
Rob Herring387798b2012-09-06 13:41:12 -0500803
804config ARCH_MULTI_V6_V7
805 bool
Rob Herring9352b052014-01-31 15:36:10 -0600806 select MIGHT_HAVE_CACHE_L2X0
Rob Herring387798b2012-09-06 13:41:12 -0500807
808config ARCH_MULTI_CPU_AUTO
809 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
810 select ARCH_MULTI_V5
811
812endmenu
813
Rob Herring05e2a3d2013-12-05 10:04:54 -0600814config ARCH_VIRT
815 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
Rob Herring4b8b5f22013-12-05 10:10:34 -0600816 select ARM_AMBA
Rob Herring05e2a3d2013-12-05 10:04:54 -0600817 select ARM_GIC
Rob Herring05e2a3d2013-12-05 10:04:54 -0600818 select ARM_PSCI
Rob Herring4b8b5f22013-12-05 10:10:34 -0600819 select HAVE_ARM_ARCH_TIMER
Rob Herring05e2a3d2013-12-05 10:04:54 -0600820
Russell Kingccf50e22010-03-15 19:03:06 +0000821#
822# This is sorted alphabetically by mach-* pathname. However, plat-*
823# Kconfigs may be included either alphabetically (according to the
824# plat- suffix) or along side the corresponding mach-* source.
825#
Gregory CLEMENT3e93a222012-06-04 18:38:56 +0200826source "arch/arm/mach-mvebu/Kconfig"
827
Tsahee Zidenberg445d9b32015-03-12 13:53:00 +0200828source "arch/arm/mach-alpine/Kconfig"
829
Oleksij Rempeld9bfc862014-11-24 12:08:27 +0100830source "arch/arm/mach-asm9260/Kconfig"
831
Russell King95b8f202010-01-14 11:43:54 +0000832source "arch/arm/mach-at91/Kconfig"
833
Anders Berg1d22924e2014-05-23 11:08:35 +0200834source "arch/arm/mach-axxia/Kconfig"
835
Christian Daudt8ac49e02012-11-19 09:46:10 -0800836source "arch/arm/mach-bcm/Kconfig"
837
Sebastian Hesselbarth1c37fa12013-09-09 14:36:19 +0200838source "arch/arm/mach-berlin/Kconfig"
839
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840source "arch/arm/mach-clps711x/Kconfig"
841
Anton Vorontsovd94f9442010-03-25 17:12:41 +0300842source "arch/arm/mach-cns3xxx/Kconfig"
843
Russell King95b8f202010-01-14 11:43:54 +0000844source "arch/arm/mach-davinci/Kconfig"
845
Baruch Siachdf8d7422015-01-14 10:40:30 +0200846source "arch/arm/mach-digicolor/Kconfig"
847
Russell King95b8f202010-01-14 11:43:54 +0000848source "arch/arm/mach-dove/Kconfig"
849
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000850source "arch/arm/mach-ep93xx/Kconfig"
851
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852source "arch/arm/mach-footbridge/Kconfig"
853
Paulius Zaleckas59d3a192009-03-26 10:06:08 +0200854source "arch/arm/mach-gemini/Kconfig"
855
Rob Herring387798b2012-09-06 13:41:12 -0500856source "arch/arm/mach-highbank/Kconfig"
857
Haojian Zhuang389ee0c2013-12-20 10:52:56 +0800858source "arch/arm/mach-hisi/Kconfig"
859
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860source "arch/arm/mach-integrator/Kconfig"
861
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100862source "arch/arm/mach-iop32x/Kconfig"
863
864source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865
Dan Williams285f5fa2006-12-07 02:59:39 +0100866source "arch/arm/mach-iop13xx/Kconfig"
867
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868source "arch/arm/mach-ixp4xx/Kconfig"
869
Santosh Shilimkar828989a2013-06-10 11:27:13 -0400870source "arch/arm/mach-keystone/Kconfig"
871
Russell King95b8f202010-01-14 11:43:54 +0000872source "arch/arm/mach-ks8695/Kconfig"
873
Carlo Caione3b8f5032014-09-10 22:16:59 +0200874source "arch/arm/mach-meson/Kconfig"
875
Jonas Jensen17723fd32013-12-18 13:58:45 +0100876source "arch/arm/mach-moxart/Kconfig"
877
Stanislav Samsonov794d15b2008-06-22 22:45:10 +0200878source "arch/arm/mach-mv78xx0/Kconfig"
879
Shawn Guo3995eb82012-09-13 19:48:07 +0800880source "arch/arm/mach-imx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881
Matthias Bruggerf682a212014-05-13 01:06:13 +0200882source "arch/arm/mach-mediatek/Kconfig"
883
Shawn Guo1d3f33d2010-12-13 20:55:03 +0800884source "arch/arm/mach-mxs/Kconfig"
885
Russell King95b8f202010-01-14 11:43:54 +0000886source "arch/arm/mach-netx/Kconfig"
Eric Miao49cbe782009-01-20 14:15:18 +0800887
Russell King95b8f202010-01-14 11:43:54 +0000888source "arch/arm/mach-nomadik/Kconfig"
Russell King95b8f202010-01-14 11:43:54 +0000889
Daniel Tang9851ca52013-06-11 18:40:17 +1000890source "arch/arm/mach-nspire/Kconfig"
891
Tony Lindgrend48af152005-07-10 19:58:17 +0100892source "arch/arm/plat-omap/Kconfig"
893
894source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895
Tony Lindgren1dbae812005-11-10 14:26:51 +0000896source "arch/arm/mach-omap2/Kconfig"
897
Lennert Buytenhek9dd0b192008-03-27 14:51:41 -0400898source "arch/arm/mach-orion5x/Kconfig"
Tzachi Perelstein585cf172007-10-23 15:14:41 -0400899
Rob Herring387798b2012-09-06 13:41:12 -0500900source "arch/arm/mach-picoxcell/Kconfig"
901
Russell King95b8f202010-01-14 11:43:54 +0000902source "arch/arm/mach-pxa/Kconfig"
903source "arch/arm/plat-pxa/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904
Russell King95b8f202010-01-14 11:43:54 +0000905source "arch/arm/mach-mmp/Kconfig"
906
Kumar Gala8fc1b0f2014-01-21 17:14:10 -0600907source "arch/arm/mach-qcom/Kconfig"
908
Russell King95b8f202010-01-14 11:43:54 +0000909source "arch/arm/mach-realview/Kconfig"
910
Heiko Stuebnerd63dc052013-06-02 23:09:41 +0200911source "arch/arm/mach-rockchip/Kconfig"
912
Russell King95b8f202010-01-14 11:43:54 +0000913source "arch/arm/mach-sa1100/Kconfig"
Saeed Bisharaedabd382009-08-06 15:12:43 +0300914
Rob Herring387798b2012-09-06 13:41:12 -0500915source "arch/arm/mach-socfpga/Kconfig"
916
Arnd Bergmanna7ed0992012-12-02 15:12:47 +0100917source "arch/arm/mach-spear/Kconfig"
Ben Dooksa21765a2007-02-11 18:31:01 +0100918
Srinivas Kandagatla65ebcc12013-06-25 12:15:10 +0100919source "arch/arm/mach-sti/Kconfig"
920
Kukjin Kim85fd6d62012-02-06 09:38:19 +0900921source "arch/arm/mach-s3c24xx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922
Ben Dooks431107e2010-01-26 10:11:04 +0900923source "arch/arm/mach-s3c64xx/Kconfig"
Ben Dooksa08ab632008-10-21 14:06:39 +0100924
Kukjin Kim170f4e42010-02-24 16:40:44 +0900925source "arch/arm/mach-s5pv210/Kconfig"
926
Kukjin Kim83014572011-11-06 13:54:56 +0900927source "arch/arm/mach-exynos/Kconfig"
Rob Herringe509b282014-06-10 09:06:09 -0500928source "arch/arm/plat-samsung/Kconfig"
Changhwan Youncc0e72b2010-07-16 12:15:38 +0900929
Russell King882d01f2010-03-02 23:40:15 +0000930source "arch/arm/mach-shmobile/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
Maxime Ripard3b526342012-11-08 12:40:16 +0100932source "arch/arm/mach-sunxi/Kconfig"
933
Barry Song156a0992012-08-23 13:41:58 +0800934source "arch/arm/mach-prima2/Kconfig"
935
Erik Gillingc5f80062010-01-21 16:53:02 -0800936source "arch/arm/mach-tegra/Kconfig"
937
Russell King95b8f202010-01-14 11:43:54 +0000938source "arch/arm/mach-u300/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939
Russell King95b8f202010-01-14 11:43:54 +0000940source "arch/arm/mach-ux500/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941
942source "arch/arm/mach-versatile/Kconfig"
943
Russell Kingceade892010-02-11 21:44:53 +0000944source "arch/arm/mach-vexpress/Kconfig"
Russell King420c34e2011-01-18 20:08:06 +0000945source "arch/arm/plat-versatile/Kconfig"
Russell Kingceade892010-02-11 21:44:53 +0000946
Tony Prisk6f35f9a2012-10-11 20:13:09 +1300947source "arch/arm/mach-vt8500/Kconfig"
948
wanzongshun7ec80dd2008-12-03 03:55:38 +0100949source "arch/arm/mach-w90x900/Kconfig"
950
Josh Cartwright9a45eb62012-11-19 11:38:29 -0600951source "arch/arm/mach-zynq/Kconfig"
952
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953# Definitions to make life easier
954config ARCH_ACORN
955 bool
956
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100957config PLAT_IOP
958 bool
Mikael Pettersson469d30442009-10-29 11:46:54 -0700959 select GENERIC_CLOCKEVENTS
Lennert Buytenhek7ae1f7e2006-09-18 23:12:53 +0100960
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400961config PLAT_ORION
962 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100963 select CLKSRC_MMIO
Russell Kingb1b3f492012-10-06 17:12:25 +0100964 select COMMON_CLK
Russell Kingdc7ad3b2011-05-22 10:01:21 +0100965 select GENERIC_IRQ_CHIP
Andrew Lunn278b45b2012-06-27 13:40:04 +0200966 select IRQ_DOMAIN
Lennert Buytenhek69b02f62008-03-27 14:51:39 -0400967
Thomas Petazzoniabcda1d2012-09-11 14:27:27 +0200968config PLAT_ORION_LEGACY
969 bool
970 select PLAT_ORION
971
Eric Miaobd5ce432009-01-20 12:06:01 +0800972config PLAT_PXA
973 bool
974
Russell Kingf4b8b312010-01-14 12:48:06 +0000975config PLAT_VERSATILE
976 bool
977
Russell Kinge3887712010-01-14 13:30:16 +0000978config ARM_TIMER_SP804
979 bool
Russell Kingbfe45e02011-05-08 15:33:30 +0100980 select CLKSRC_MMIO
Rob Herring7a0eca72013-03-25 11:23:52 -0500981 select CLKSRC_OF if OF
Russell Kinge3887712010-01-14 13:30:16 +0000982
Alexandre Courbotd9a1bea2013-11-24 15:30:46 +0900983source "arch/arm/firmware/Kconfig"
984
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985source arch/arm/mm/Kconfig
986
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100987config IWMMXT
Sebastian Hesselbarthd93003e2014-04-24 22:58:30 +0100988 bool "Enable iWMMXt support"
989 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
990 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
Lennert Buytenhekafe4b252006-12-03 18:51:14 +0100991 help
992 Enable support for iWMMXt context switching at run time if
993 running on a CPU that supports it.
994
eric miao52108642010-12-13 09:42:34 +0100995config MULTI_IRQ_HANDLER
996 bool
997 help
998 Allow each machine to specify it's own IRQ handler at run time.
999
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +01001000if !MMU
1001source "arch/arm/Kconfig-nommu"
1002endif
1003
Gregory CLEMENT3e0a07f2013-06-23 10:17:11 +01001004config PJ4B_ERRATA_4742
1005 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1006 depends on CPU_PJ4B && MACH_ARMADA_370
1007 default y
1008 help
1009 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1010 Event (WFE) IDLE states, a specific timing sensitivity exists between
1011 the retiring WFI/WFE instructions and the newly issued subsequent
1012 instructions. This sensitivity can result in a CPU hang scenario.
1013 Workaround:
1014 The software must insert either a Data Synchronization Barrier (DSB)
1015 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1016 instruction
1017
Will Deaconf0c4b8d2012-04-20 17:20:08 +01001018config ARM_ERRATA_326103
1019 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1020 depends on CPU_V6
1021 help
1022 Executing a SWP instruction to read-only memory does not set bit 11
1023 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1024 treat the access as a read, preventing a COW from occurring and
1025 causing the faulting task to livelock.
1026
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001027config ARM_ERRATA_411920
1028 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
Russell Kinge399b1a2011-01-17 15:08:32 +00001029 depends on CPU_V6 || CPU_V6K
Catalin Marinas9cba3cc2009-04-30 17:06:03 +01001030 help
1031 Invalidation of the Instruction Cache operation can
1032 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1033 It does not affect the MPCore. This option enables the ARM Ltd.
1034 recommended workaround.
1035
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001036config ARM_ERRATA_430973
1037 bool "ARM errata: Stale prediction on replaced interworking branch"
1038 depends on CPU_V7
1039 help
1040 This option enables the workaround for the 430973 Cortex-A8
Russell King79403cd2015-04-13 16:14:37 +01001041 r1p* erratum. If a code sequence containing an ARM/Thumb
Catalin Marinas7ce236f2009-04-30 17:06:09 +01001042 interworking branch is replaced with another code sequence at the
1043 same virtual address, whether due to self-modifying code or virtual
1044 to physical address re-mapping, Cortex-A8 does not recover from the
1045 stale interworking branch prediction. This results in Cortex-A8
1046 executing the new code sequence in the incorrect ARM or Thumb state.
1047 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1048 and also flushes the branch target cache at every context switch.
1049 Note that setting specific bits in the ACTLR register may not be
1050 available in non-secure mode.
1051
Catalin Marinas855c5512009-04-30 17:06:15 +01001052config ARM_ERRATA_458693
1053 bool "ARM errata: Processor deadlock when a false hazard is created"
1054 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001055 depends on !ARCH_MULTIPLATFORM
Catalin Marinas855c5512009-04-30 17:06:15 +01001056 help
1057 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1058 erratum. For very specific sequences of memory operations, it is
1059 possible for a hazard condition intended for a cache line to instead
1060 be incorrectly associated with a different cache line. This false
1061 hazard might then cause a processor deadlock. The workaround enables
1062 the L1 caching of the NEON accesses and disables the PLD instruction
1063 in the ACTLR register. Note that setting specific bits in the ACTLR
1064 register may not be available in non-secure mode.
1065
Catalin Marinas0516e462009-04-30 17:06:20 +01001066config ARM_ERRATA_460075
1067 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1068 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001069 depends on !ARCH_MULTIPLATFORM
Catalin Marinas0516e462009-04-30 17:06:20 +01001070 help
1071 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1072 erratum. Any asynchronous access to the L2 cache may encounter a
1073 situation in which recent store transactions to the L2 cache are lost
1074 and overwritten with stale memory contents from external memory. The
1075 workaround disables the write-allocate mode for the L2 cache via the
1076 ACTLR register. Note that setting specific bits in the ACTLR register
1077 may not be available in non-secure mode.
1078
Will Deacon9f050272010-09-14 09:51:43 +01001079config ARM_ERRATA_742230
1080 bool "ARM errata: DMB operation may be faulty"
1081 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001082 depends on !ARCH_MULTIPLATFORM
Will Deacon9f050272010-09-14 09:51:43 +01001083 help
1084 This option enables the workaround for the 742230 Cortex-A9
1085 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1086 between two write operations may not ensure the correct visibility
1087 ordering of the two writes. This workaround sets a specific bit in
1088 the diagnostic register of the Cortex-A9 which causes the DMB
1089 instruction to behave as a DSB, ensuring the correct behaviour of
1090 the two writes.
1091
Will Deacona672e992010-09-14 09:53:02 +01001092config ARM_ERRATA_742231
1093 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1094 depends on CPU_V7 && SMP
Rob Herring62e4d352012-12-21 22:42:40 +01001095 depends on !ARCH_MULTIPLATFORM
Will Deacona672e992010-09-14 09:53:02 +01001096 help
1097 This option enables the workaround for the 742231 Cortex-A9
1098 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1099 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1100 accessing some data located in the same cache line, may get corrupted
1101 data due to bad handling of the address hazard when the line gets
1102 replaced from one of the CPUs at the same time as another CPU is
1103 accessing it. This workaround sets specific bits in the diagnostic
1104 register of the Cortex-A9 which reduces the linefill issuing
1105 capabilities of the processor.
1106
Jon Medhurst69155792013-06-07 10:35:35 +01001107config ARM_ERRATA_643719
1108 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1109 depends on CPU_V7 && SMP
Russell Kinge5a5de42015-04-02 23:58:55 +01001110 default y
Jon Medhurst69155792013-06-07 10:35:35 +01001111 help
1112 This option enables the workaround for the 643719 Cortex-A9 (prior to
1113 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1114 register returns zero when it should return one. The workaround
1115 corrects this value, ensuring cache maintenance operations which use
1116 it behave as intended and avoiding data corruption.
1117
Will Deaconcdf357f2010-08-05 11:20:51 +01001118config ARM_ERRATA_720789
1119 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
Dave Martine66dc742011-12-08 13:37:46 +01001120 depends on CPU_V7
Will Deaconcdf357f2010-08-05 11:20:51 +01001121 help
1122 This option enables the workaround for the 720789 Cortex-A9 (prior to
1123 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1124 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1125 As a consequence of this erratum, some TLB entries which should be
1126 invalidated are not, resulting in an incoherency in the system page
1127 tables. The workaround changes the TLB flushing routines to invalidate
1128 entries regardless of the ASID.
Will Deacon475d92f2010-09-28 14:02:02 +01001129
1130config ARM_ERRATA_743622
1131 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1132 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001133 depends on !ARCH_MULTIPLATFORM
Will Deacon475d92f2010-09-28 14:02:02 +01001134 help
1135 This option enables the workaround for the 743622 Cortex-A9
Will Deaconefbc74a2012-02-24 12:12:38 +01001136 (r2p*) erratum. Under very rare conditions, a faulty
Will Deacon475d92f2010-09-28 14:02:02 +01001137 optimisation in the Cortex-A9 Store Buffer may lead to data
1138 corruption. This workaround sets a specific bit in the diagnostic
1139 register of the Cortex-A9 which disables the Store Buffer
1140 optimisation, preventing the defect from occurring. This has no
1141 visible impact on the overall performance or power consumption of the
1142 processor.
1143
Will Deacon9a27c272011-02-18 16:36:35 +01001144config ARM_ERRATA_751472
1145 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
Dave Martinba90c512011-12-08 13:41:06 +01001146 depends on CPU_V7
Rob Herring62e4d352012-12-21 22:42:40 +01001147 depends on !ARCH_MULTIPLATFORM
Will Deacon9a27c272011-02-18 16:36:35 +01001148 help
1149 This option enables the workaround for the 751472 Cortex-A9 (prior
1150 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1151 completion of a following broadcasted operation if the second
1152 operation is received by a CPU before the ICIALLUIS has completed,
1153 potentially leading to corrupted entries in the cache or TLB.
1154
Will Deaconfcbdc5fe2011-02-28 18:15:16 +01001155config ARM_ERRATA_754322
1156 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1157 depends on CPU_V7
1158 help
1159 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1160 r3p*) erratum. A speculative memory access may cause a page table walk
1161 which starts prior to an ASID switch but completes afterwards. This
1162 can populate the micro-TLB with a stale entry which may be hit with
1163 the new ASID. This workaround places two dsb instructions in the mm
1164 switching code so that no page table walks can cross the ASID switch.
1165
Will Deacon5dab26af2011-03-04 12:38:54 +01001166config ARM_ERRATA_754327
1167 bool "ARM errata: no automatic Store Buffer drain"
1168 depends on CPU_V7 && SMP
1169 help
1170 This option enables the workaround for the 754327 Cortex-A9 (prior to
1171 r2p0) erratum. The Store Buffer does not have any automatic draining
1172 mechanism and therefore a livelock may occur if an external agent
1173 continuously polls a memory location waiting to observe an update.
1174 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1175 written polling loops from denying visibility of updates to memory.
1176
Catalin Marinas145e10e2011-08-15 11:04:41 +01001177config ARM_ERRATA_364296
1178 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
Fabio Estevamfd832472013-07-09 18:34:01 +01001179 depends on CPU_V6
Catalin Marinas145e10e2011-08-15 11:04:41 +01001180 help
1181 This options enables the workaround for the 364296 ARM1136
1182 r0p2 erratum (possible cache data corruption with
1183 hit-under-miss enabled). It sets the undocumented bit 31 in
1184 the auxiliary control register and the FI bit in the control
1185 register, thus disabling hit-under-miss without putting the
1186 processor into full low interrupt latency mode. ARM11MPCore
1187 is not affected.
1188
Will Deaconf630c1b2011-09-15 11:45:15 +01001189config ARM_ERRATA_764369
1190 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1191 depends on CPU_V7 && SMP
1192 help
1193 This option enables the workaround for erratum 764369
1194 affecting Cortex-A9 MPCore with two or more processors (all
1195 current revisions). Under certain timing circumstances, a data
1196 cache line maintenance operation by MVA targeting an Inner
1197 Shareable memory region may fail to proceed up to either the
1198 Point of Coherency or to the Point of Unification of the
1199 system. This workaround adds a DSB instruction before the
1200 relevant cache maintenance functions and sets a specific bit
1201 in the diagnostic control register of the SCU.
1202
Simon Horman7253b852012-09-28 02:12:45 +01001203config ARM_ERRATA_775420
1204 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1205 depends on CPU_V7
1206 help
1207 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1208 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1209 operation aborts with MMU exception, it might cause the processor
1210 to deadlock. This workaround puts DSB before executing ISB if
1211 an abort may occur on cache maintenance.
1212
Catalin Marinas93dc6882013-03-26 23:35:04 +01001213config ARM_ERRATA_798181
1214 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1215 depends on CPU_V7 && SMP
1216 help
1217 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1218 adequately shooting down all use of the old entries. This
1219 option enables the Linux kernel workaround for this erratum
1220 which sends an IPI to the CPUs that are running the same ASID
1221 as the one being invalidated.
1222
Will Deacon84b65042013-08-20 17:29:55 +01001223config ARM_ERRATA_773022
1224 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1225 depends on CPU_V7
1226 help
1227 This option enables the workaround for the 773022 Cortex-A15
1228 (up to r0p4) erratum. In certain rare sequences of code, the
1229 loop buffer may deliver incorrect instructions. This
1230 workaround disables the loop buffer to avoid the erratum.
1231
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232endmenu
1233
1234source "arch/arm/common/Kconfig"
1235
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236menu "Bus support"
1237
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238config ISA
1239 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240 help
1241 Find out whether you have ISA slots on your motherboard. ISA is the
1242 name of a bus system, i.e. the way the CPU talks to the other stuff
1243 inside your box. Other bus systems are PCI, EISA, MicroChannel
1244 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1245 newer boards don't support it. If you have ISA, say Y, otherwise N.
1246
Russell King065909b2006-01-04 15:44:16 +00001247# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248config ISA_DMA
1249 bool
Russell King065909b2006-01-04 15:44:16 +00001250 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251
Russell King065909b2006-01-04 15:44:16 +00001252# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +01001253config ISA_DMA_API
1254 bool
Al Viro5cae8412005-05-04 05:39:22 +01001255
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256config PCI
Hans Ulli Kroll0b05da72010-12-02 12:32:15 +01001257 bool "PCI support" if MIGHT_HAVE_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 help
1259 Find out whether you have a PCI motherboard. PCI is the name of a
1260 bus system, i.e. the way the CPU talks to the other stuff inside
1261 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1262 VESA. If you have PCI, say Y, otherwise N.
1263
Anton Vorontsov52882172010-04-19 13:20:49 +01001264config PCI_DOMAINS
1265 bool
1266 depends on PCI
1267
Lorenzo Pieralisi8c7d14742014-11-21 11:29:26 +00001268config PCI_DOMAINS_GENERIC
1269 def_bool PCI_DOMAINS
1270
Marcelo Roberto Jimenezb080ac82010-12-16 21:34:51 +01001271config PCI_NANOENGINE
1272 bool "BSE nanoEngine PCI support"
1273 depends on SA1100_NANOENGINE
1274 help
1275 Enable PCI on the BSE nanoEngine board.
1276
Matthew Wilcox36e23592007-07-10 10:54:40 -06001277config PCI_SYSCALL
1278 def_bool PCI
1279
Mike Rapoporta0113a92007-11-25 08:55:34 +01001280config PCI_HOST_ITE8152
1281 bool
1282 depends on PCI && MACH_ARMCORE
1283 default y
1284 select DMABOUNCE
1285
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286source "drivers/pci/Kconfig"
Jingoo Han3f06d152013-06-21 16:25:29 +09001287source "drivers/pci/pcie/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288
1289source "drivers/pcmcia/Kconfig"
1290
1291endmenu
1292
1293menu "Kernel Features"
1294
Dave Martin3b556582011-12-07 15:38:04 +00001295config HAVE_SMP
1296 bool
1297 help
1298 This option should be selected by machines which have an SMP-
1299 capable CPU.
1300
1301 The only effect of this option is to make the SMP-related
1302 options available to the user for configuration.
1303
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304config SMP
Russell Kingbb2d8132011-05-12 09:52:02 +01001305 bool "Symmetric Multi-Processing"
Russell Kingfbb4dda2011-01-17 18:01:58 +00001306 depends on CPU_V6K || CPU_V7
Russell Kingbc282482009-05-17 18:58:34 +01001307 depends on GENERIC_CLOCKEVENTS
Dave Martin3b556582011-12-07 15:38:04 +00001308 depends on HAVE_SMP
Jonathan Austin801bb212013-02-22 18:56:04 +00001309 depends on MMU || ARM_MPU
Arnd Bergmann03617482015-05-26 15:36:58 +01001310 select IRQ_WORK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311 help
1312 This enables support for systems with more than one CPU. If you have
Robert Graffham4a474152014-01-23 15:55:29 -08001313 a system with only one CPU, say N. If you have a system with more
1314 than one CPU, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315
Robert Graffham4a474152014-01-23 15:55:29 -08001316 If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317 machines, but will use only one CPU of a multiprocessor machine. If
Robert Graffham4a474152014-01-23 15:55:29 -08001318 you say Y here, the kernel will run on many, but not all,
1319 uniprocessor machines. On a uniprocessor machine, the kernel
1320 will run faster if you say N here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321
Paul Bolle395cf962011-08-15 02:02:26 +02001322 See also <file:Documentation/x86/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
Justin P. Mattock50a23e62010-10-16 10:36:23 -07001324 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325
1326 If you don't know what to do here, say N.
1327
Russell Kingf00ec482010-09-04 10:47:48 +01001328config SMP_ON_UP
Russell King5744ff42015-02-13 11:04:21 +00001329 bool "Allow booting SMP kernel on uniprocessor systems"
Jonathan Austin801bb212013-02-22 18:56:04 +00001330 depends on SMP && !XIP_KERNEL && MMU
Russell Kingf00ec482010-09-04 10:47:48 +01001331 default y
1332 help
1333 SMP kernels contain instructions which fail on non-SMP processors.
1334 Enabling this option allows the kernel to modify itself to make
1335 these instructions safe. Disabling it allows about 1K of space
1336 savings.
1337
1338 If you don't know what to do here, say Y.
1339
Vincent Guittotc9018aa2011-08-08 13:21:59 +01001340config ARM_CPU_TOPOLOGY
1341 bool "Support cpu topology definition"
1342 depends on SMP && CPU_V7
1343 default y
1344 help
1345 Support ARM cpu topology definition. The MPIDR register defines
1346 affinity between processors which is then used to describe the cpu
1347 topology of an ARM System.
1348
1349config SCHED_MC
1350 bool "Multi-core scheduler support"
1351 depends on ARM_CPU_TOPOLOGY
1352 help
1353 Multi-core scheduler support improves the CPU scheduler's decision
1354 making when dealing with multi-core CPU chips at a cost of slightly
1355 increased overhead in some places. If unsure say N here.
1356
1357config SCHED_SMT
1358 bool "SMT scheduler support"
1359 depends on ARM_CPU_TOPOLOGY
1360 help
1361 Improves the CPU scheduler's decision making when dealing with
1362 MultiThreading at a cost of slightly increased overhead in some
1363 places. If unsure say N here.
1364
Russell Kinga8cbcd92009-05-16 11:51:14 +01001365config HAVE_ARM_SCU
1366 bool
Russell Kinga8cbcd92009-05-16 11:51:14 +01001367 help
1368 This option enables support for the ARM system coherency unit
1369
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001370config HAVE_ARM_ARCH_TIMER
Marc Zyngier022c03a2012-01-11 17:25:17 +00001371 bool "Architected timer support"
1372 depends on CPU_V7
Mark Rutland8a4da6e2012-11-12 14:33:44 +00001373 select ARM_ARCH_TIMER
Will Deacon0c4034622013-11-19 15:46:17 +01001374 select GENERIC_CLOCKEVENTS
Marc Zyngier022c03a2012-01-11 17:25:17 +00001375 help
1376 This option enables support for the ARM architected timer
1377
Russell Kingf32f4ce2009-05-16 12:14:21 +01001378config HAVE_ARM_TWD
1379 bool
1380 depends on SMP
Rob Herringda4a6862013-02-06 21:17:47 -06001381 select CLKSRC_OF if OF
Russell Kingf32f4ce2009-05-16 12:14:21 +01001382 help
1383 This options enables support for the ARM timer and watchdog unit
1384
Nicolas Pitree8db2882012-04-12 02:45:22 -04001385config MCPM
1386 bool "Multi-Cluster Power Management"
1387 depends on CPU_V7 && SMP
1388 help
1389 This option provides the common power management infrastructure
1390 for (multi-)cluster based systems, such as big.LITTLE based
1391 systems.
1392
Haojian Zhuangebf4a5c2014-04-15 14:52:00 +08001393config MCPM_QUAD_CLUSTER
1394 bool
1395 depends on MCPM
1396 help
1397 To avoid wasting resources unnecessarily, MCPM only supports up
1398 to 2 clusters by default.
1399 Platforms with 3 or 4 clusters that use MCPM must select this
1400 option to allow the additional clusters to be managed.
1401
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001402config BIG_LITTLE
1403 bool "big.LITTLE support (Experimental)"
1404 depends on CPU_V7 && SMP
1405 select MCPM
1406 help
1407 This option enables support selections for the big.LITTLE
1408 system architecture.
1409
1410config BL_SWITCHER
1411 bool "big.LITTLE switcher support"
1412 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001413 select ARM_CPU_SUSPEND
Russell King51aaf812014-04-22 22:26:27 +01001414 select CPU_PM
Nicolas Pitre1c33be52012-04-12 02:56:10 -04001415 help
1416 The big.LITTLE "switcher" provides the core functionality to
1417 transparently handle transition between a cluster of A15's
1418 and a cluster of A7's in a big.LITTLE system.
1419
Nicolas Pitreb22537c2012-04-12 03:04:28 -04001420config BL_SWITCHER_DUMMY_IF
1421 tristate "Simple big.LITTLE switcher user interface"
1422 depends on BL_SWITCHER && DEBUG_KERNEL
1423 help
1424 This is a simple and dummy char dev interface to control
1425 the big.LITTLE switcher core code. It is meant for
1426 debugging purposes only.
1427
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001428choice
1429 prompt "Memory split"
Russell King006fa252014-02-26 19:40:46 +00001430 depends on MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001431 default VMSPLIT_3G
1432 help
1433 Select the desired split between kernel and user memory.
1434
1435 If you are not absolutely sure what you are doing, leave this
1436 option alone!
1437
1438 config VMSPLIT_3G
1439 bool "3G/1G user/kernel split"
1440 config VMSPLIT_2G
1441 bool "2G/2G user/kernel split"
1442 config VMSPLIT_1G
1443 bool "1G/3G user/kernel split"
1444endchoice
1445
1446config PAGE_OFFSET
1447 hex
Russell King006fa252014-02-26 19:40:46 +00001448 default PHYS_OFFSET if !MMU
Lennert Buytenhek8d5796d2008-08-25 21:03:32 +01001449 default 0x40000000 if VMSPLIT_1G
1450 default 0x80000000 if VMSPLIT_2G
1451 default 0xC0000000
1452
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453config NR_CPUS
1454 int "Maximum number of CPUs (2-32)"
1455 range 2 32
1456 depends on SMP
1457 default "4"
1458
Russell Kinga054a812005-11-02 22:24:33 +00001459config HOTPLUG_CPU
Russell King00b7ded2012-10-22 22:54:30 +01001460 bool "Support for hot-pluggable CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +10001461 depends on SMP
Russell Kinga054a812005-11-02 22:24:33 +00001462 help
1463 Say Y here to experiment with turning CPUs off and on. CPUs
1464 can be controlled through /sys/devices/system/cpu.
1465
Will Deacon2bdd4242012-12-12 19:20:52 +00001466config ARM_PSCI
1467 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1468 depends on CPU_V7
1469 help
1470 Say Y here if you want Linux to communicate with system firmware
1471 implementing the PSCI specification for CPU-centric power
1472 management operations described in ARM document number ARM DEN
1473 0022A ("Power State Coordination Interface System Software on
1474 ARM processors").
1475
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001476# The GPIO number here must be sorted by descending number. In case of
1477# a multiplatform kernel, we just want the highest value required by the
1478# selected platforms.
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001479config ARCH_NR_GPIO
1480 int
Michal Simek6a4d8f32015-01-15 08:42:42 +01001481 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
Tomasz Figaaa425872014-07-03 13:17:12 +02001482 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1483 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
Boris BREZILLONeb171a92014-04-10 15:52:46 +02001484 default 416 if ARCH_SUNXI
Olof Johansson06b851e2013-04-02 18:33:58 -07001485 default 392 if ARCH_U8500
Tony Prisk01bb9142013-03-09 18:22:30 +13001486 default 352 if ARCH_VT8500
Heiko Stuebner7b5da4c2014-05-26 00:13:51 +02001487 default 288 if ARCH_ROCKCHIP
Maxime Ripard2a6ad872013-02-03 12:24:48 +01001488 default 264 if MACH_H4700
Peter De Schrijver (NVIDIA)44986ab2011-12-21 10:48:45 +01001489 default 0
1490 help
1491 Maximum number of GPIOs in the system.
1492
1493 If unsure, leave the default value.
1494
Uwe Kleine-Königd45a3982009-08-13 20:38:17 +02001495source kernel/Kconfig.preempt
Linus Torvalds1da177e2005-04-16 15:20:36 -07001496
Russell Kingc9218b12013-04-27 23:31:10 +01001497config HZ_FIXED
Russell Kingf8065812006-03-02 22:41:59 +00001498 int
Kukjin Kim070b8b42014-07-02 07:50:15 +09001499 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
Kukjin Kima73ddc62011-05-11 16:27:51 +09001500 ARCH_S5PV210 || ARCH_EXYNOS4
Alexandre Belloni1164f672015-03-13 22:57:24 +01001501 default 128 if SOC_AT91RM9200
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001502 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
Russell King47d84682013-09-10 23:47:55 +01001503 default 0
Russell Kingc9218b12013-04-27 23:31:10 +01001504
1505choice
Russell King47d84682013-09-10 23:47:55 +01001506 depends on HZ_FIXED = 0
Russell Kingc9218b12013-04-27 23:31:10 +01001507 prompt "Timer frequency"
1508
1509config HZ_100
1510 bool "100 Hz"
1511
1512config HZ_200
1513 bool "200 Hz"
1514
1515config HZ_250
1516 bool "250 Hz"
1517
1518config HZ_300
1519 bool "300 Hz"
1520
1521config HZ_500
1522 bool "500 Hz"
1523
1524config HZ_1000
1525 bool "1000 Hz"
1526
1527endchoice
1528
1529config HZ
1530 int
Russell King47d84682013-09-10 23:47:55 +01001531 default HZ_FIXED if HZ_FIXED != 0
Russell Kingc9218b12013-04-27 23:31:10 +01001532 default 100 if HZ_100
1533 default 200 if HZ_200
1534 default 250 if HZ_250
1535 default 300 if HZ_300
1536 default 500 if HZ_500
1537 default 1000
1538
1539config SCHED_HRTICK
1540 def_bool HIGH_RES_TIMERS
Russell Kingf8065812006-03-02 22:41:59 +00001541
Catalin Marinas16c79652009-07-24 12:33:02 +01001542config THUMB2_KERNEL
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001543 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
Uwe Kleine-König4477ca42013-03-21 21:02:37 +01001544 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
Uwe Kleine-Königbc7dea02011-12-09 20:52:10 +01001545 default y if CPU_THUMBONLY
Catalin Marinas16c79652009-07-24 12:33:02 +01001546 select AEABI
1547 select ARM_ASM_UNIFIED
Arnd Bergmann89bace62011-06-10 14:12:21 +00001548 select ARM_UNWIND
Catalin Marinas16c79652009-07-24 12:33:02 +01001549 help
1550 By enabling this option, the kernel will be compiled in
1551 Thumb-2 mode. A compiler/assembler that understand the unified
1552 ARM-Thumb syntax is needed.
1553
1554 If unsure, say N.
1555
Dave Martin6f685c52011-03-03 11:41:12 +01001556config THUMB2_AVOID_R_ARM_THM_JUMP11
1557 bool "Work around buggy Thumb-2 short branch relocations in gas"
1558 depends on THUMB2_KERNEL && MODULES
1559 default y
1560 help
1561 Various binutils versions can resolve Thumb-2 branches to
1562 locally-defined, preemptible global symbols as short-range "b.n"
1563 branch instructions.
1564
1565 This is a problem, because there's no guarantee the final
1566 destination of the symbol, or any candidate locations for a
1567 trampoline, are within range of the branch. For this reason, the
1568 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1569 relocation in modules at all, and it makes little sense to add
1570 support.
1571
1572 The symptom is that the kernel fails with an "unsupported
1573 relocation" error when loading some modules.
1574
1575 Until fixed tools are available, passing
1576 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1577 code which hits this problem, at the cost of a bit of extra runtime
1578 stack usage in some cases.
1579
1580 The problem is described in more detail at:
1581 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1582
1583 Only Thumb-2 kernels are affected.
1584
1585 Unless you are sure your tools don't have this problem, say Y.
1586
Catalin Marinas0becb082009-07-24 12:32:53 +01001587config ARM_ASM_UNIFIED
1588 bool
1589
Nicolas Pitre704bdda02006-01-14 16:33:50 +00001590config AEABI
1591 bool "Use the ARM EABI to compile the kernel"
1592 help
1593 This option allows for the kernel to be compiled using the latest
1594 ARM ABI (aka EABI). This is only useful if you are using a user
1595 space environment that is also compiled with EABI.
1596
1597 Since there are major incompatibilities between the legacy ABI and
1598 EABI, especially with regard to structure member alignment, this
1599 option also changes the kernel syscall calling convention to
1600 disambiguate both ABIs and allow for backward compatibility support
1601 (selected with CONFIG_OABI_COMPAT).
1602
1603 To use this you need GCC version 4.0.0 or later.
1604
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001605config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +00001606 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08001607 depends on AEABI && !THUMB2_KERNEL
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001608 help
1609 This option preserves the old syscall interface along with the
1610 new (ARM EABI) one. It also provides a compatibility layer to
1611 intercept syscalls that have structure arguments which layout
1612 in memory differs between the legacy ABI and the new ARM EABI
1613 (only for non "thumb" binaries). This option adds a tiny
1614 overhead to all syscalls and produces a slightly larger kernel.
Kees Cook91702172013-11-09 00:51:56 +01001615
1616 The seccomp filter system will not be available when this is
1617 selected, since there is no way yet to sensibly distinguish
1618 between calling conventions during filtering.
1619
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001620 If you know you'll be using only pure EABI user space then you
1621 can say N here. If this option is not selected and you attempt
1622 to execute a legacy ABI binary then the result will be
1623 UNPREDICTABLE (in fact it can be predicted that it won't work
Kees Cookb02f8462013-11-09 00:31:11 +01001624 at all). If in doubt say N.
Nicolas Pitre6c90c872006-01-14 16:37:15 +00001625
Mel Gormaneb335752009-05-13 17:34:48 +01001626config ARCH_HAS_HOLES_MEMORYMODEL
Mel Gormane80d6a22008-08-14 11:10:14 +01001627 bool
Mel Gormane80d6a22008-08-14 11:10:14 +01001628
Russell King05944d72006-11-30 20:43:51 +00001629config ARCH_SPARSEMEM_ENABLE
1630 bool
1631
Russell King07a2f732008-10-01 21:39:58 +01001632config ARCH_SPARSEMEM_DEFAULT
1633 def_bool ARCH_SPARSEMEM_ENABLE
1634
Russell King05944d72006-11-30 20:43:51 +00001635config ARCH_SELECT_MEMORY_MODEL
Russell Kingbe370302010-05-07 17:40:33 +01001636 def_bool ARCH_SPARSEMEM_ENABLE
Yasunori Gotoc80d79d2006-04-10 22:53:53 -07001637
Will Deacon7b7bf492011-05-19 13:21:14 +01001638config HAVE_ARCH_PFN_VALID
1639 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1640
Steve Capperb8cd51a2014-10-09 15:29:20 -07001641config HAVE_GENERIC_RCU_GUP
1642 def_bool y
1643 depends on ARM_LPAE
1644
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001645config HIGHMEM
Russell Kinge8db89a2011-05-12 09:53:05 +01001646 bool "High Memory Support"
1647 depends on MMU
Nicolas Pitre053a96c2008-09-19 00:36:12 -04001648 help
1649 The address space of ARM processors is only 4 Gigabytes large
1650 and it has to accommodate user address space, kernel address
1651 space as well as some memory mapped IO. That means that, if you
1652 have a large amount of physical memory and/or IO, not all of the
1653 memory can be "permanently mapped" by the kernel. The physical
1654 memory that is not permanently mapped is called "high memory".
1655
1656 Depending on the selected kernel/user memory split, minimum
1657 vmalloc space and actual amount of RAM, you may not need this
1658 option which should result in a slightly faster kernel.
1659
1660 If unsure, say n.
1661
Russell King65cec8e2009-08-17 20:02:06 +01001662config HIGHPTE
1663 bool "Allocate 2nd-level pagetables from highmem"
1664 depends on HIGHMEM
Russell King65cec8e2009-08-17 20:02:06 +01001665
Jamie Iles1b8873a2010-02-02 20:25:44 +01001666config HW_PERF_EVENTS
1667 bool "Enable hardware performance counter support for perf events"
Will Deaconf0d1bc42012-07-28 16:27:03 +01001668 depends on PERF_EVENTS
Jamie Iles1b8873a2010-02-02 20:25:44 +01001669 default y
1670 help
1671 Enable hardware performance counter support for perf events. If
1672 disabled, perf events will use software events only.
1673
Catalin Marinas1355e2a2012-07-25 14:32:38 +01001674config SYS_SUPPORTS_HUGETLBFS
1675 def_bool y
1676 depends on ARM_LPAE
1677
Catalin Marinas8d962502012-07-25 14:39:26 +01001678config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1679 def_bool y
1680 depends on ARM_LPAE
1681
Steven Capper4bfab202013-07-26 14:58:22 +01001682config ARCH_WANT_GENERAL_HUGETLB
1683 def_bool y
1684
Dave Hansen3f22ab22005-06-23 00:07:43 -07001685source "mm/Kconfig"
1686
Magnus Dammc1b2d972010-07-05 10:00:11 +01001687config FORCE_MAX_ZONEORDER
Laurent Pinchartbf98c1e2013-11-09 13:33:48 +01001688 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1689 range 11 64 if ARCH_SHMOBILE_LEGACY
Yegor Yefremov898f08e2012-10-08 14:37:53 -07001690 default "12" if SOC_AM33XX
Uwe Kleine-König6d85e2b2011-11-17 14:36:23 +01001691 default "9" if SA1111 || ARCH_EFM32
Magnus Dammc1b2d972010-07-05 10:00:11 +01001692 default "11"
1693 help
1694 The kernel memory allocator divides physically contiguous memory
1695 blocks into "zones", where each zone is a power of two number of
1696 pages. This option selects the largest power of two that the kernel
1697 keeps in the memory allocator. If you need to allocate very large
1698 blocks of physically contiguous memory, then you may need to
1699 increase this value.
1700
1701 This config option is actually maximum order plus one. For example,
1702 a value of 11 means that the largest free memory block is 2^10 pages.
1703
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704config ALIGNMENT_TRAP
1705 bool
Hyok S. Choif12d0d72006-09-26 17:36:37 +09001706 depends on CPU_CP15_MMU
Linus Torvalds1da177e2005-04-16 15:20:36 -07001707 default y if !ARCH_EBSA110
Russell Kinge119bff2010-01-10 17:23:29 +00001708 select HAVE_PROC_CPU if PROC_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709 help
Matt LaPlante84eb8d02006-10-03 22:53:09 +02001710 ARM processors cannot fetch/store information which is not
Linus Torvalds1da177e2005-04-16 15:20:36 -07001711 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1712 address divisible by 4. On 32-bit ARM processors, these non-aligned
1713 fetch/store instructions will be emulated in software if you say
1714 here, which has a severe performance impact. This is necessary for
1715 correct operation of some network protocols. With an IP-only
1716 configuration it is safe to say N, otherwise say Y.
1717
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001718config UACCESS_WITH_MEMCPY
Linus Walleij38ef2ad2012-09-10 16:36:37 +01001719 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1720 depends on MMU
Lennert Buytenhek39ec58f2009-03-09 14:30:09 -04001721 default y if CPU_FEROCEON
1722 help
1723 Implement faster copy_to_user and clear_user methods for CPU
1724 cores where a 8-word STM instruction give significantly higher
1725 memory write throughput than a sequence of individual 32bit stores.
1726
1727 A possible side effect is a slight increase in scheduling latency
1728 between threads sharing the same address space if they invoke
1729 such copy operations with large buffers.
1730
1731 However, if the CPU data cache is using a write-allocate mode,
1732 this option is unlikely to provide any performance gain.
1733
Nicolas Pitre70c70d92010-08-26 15:08:35 -07001734config SECCOMP
1735 bool
1736 prompt "Enable seccomp to safely compute untrusted bytecode"
1737 ---help---
1738 This kernel feature is useful for number crunching applications
1739 that may need to compute untrusted bytecode during their
1740 execution. By using pipes or other transports made available to
1741 the process as file descriptors supporting the read/write
1742 syscalls, it's possible to isolate those applications in
1743 their own address space using seccomp. Once seccomp is
1744 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1745 and the task is only allowed to execute a few safe syscalls
1746 defined by each seccomp mode.
1747
Stefano Stabellini06e62952013-10-15 15:47:14 +00001748config SWIOTLB
1749 def_bool y
1750
1751config IOMMU_HELPER
1752 def_bool SWIOTLB
1753
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001754config XEN_DOM0
1755 def_bool y
1756 depends on XEN
1757
1758config XEN
Julien Grallc2ba1f72014-09-17 14:07:06 -07001759 bool "Xen guest support on ARM"
Ian Campbell85323a92013-03-07 07:17:25 +00001760 depends on ARM && AEABI && OF
Arnd Bergmannf880b672012-10-09 10:33:52 +00001761 depends on CPU_V7 && !CPU_V6
Ian Campbell85323a92013-03-07 07:17:25 +00001762 depends on !GENERIC_ATOMIC64
Uwe Kleine-König7693dec2014-03-03 09:25:52 -05001763 depends on MMU
Russell King51aaf812014-04-22 22:26:27 +01001764 select ARCH_DMA_ADDR_T_64BIT
Stefano Stabellini17b7ab82013-04-24 18:47:18 +00001765 select ARM_PSCI
Stefano Stabellini83862cc2013-10-10 13:40:44 +00001766 select SWIOTLB_XEN
Stefano Stabellinieff8d642012-09-17 14:58:17 +00001767 help
1768 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1769
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770endmenu
1771
1772menu "Boot options"
1773
Grant Likely9eb8f672011-04-28 14:27:20 -06001774config USE_OF
1775 bool "Flattened Device Tree support"
Russell Kingb1b3f492012-10-06 17:12:25 +01001776 select IRQ_DOMAIN
Grant Likely9eb8f672011-04-28 14:27:20 -06001777 select OF
1778 select OF_EARLY_FLATTREE
Marek Szyprowskibcedb5f2014-02-28 14:42:54 +01001779 select OF_RESERVED_MEM
Grant Likely9eb8f672011-04-28 14:27:20 -06001780 help
1781 Include support for flattened device tree machine descriptions.
1782
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001783config ATAGS
1784 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1785 default y
1786 help
1787 This is the traditional way of passing data to the kernel at boot
1788 time. If you are solely relying on the flattened device tree (or
1789 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1790 to remove ATAGS support from your kernel binary. If unsure,
1791 leave this to y.
1792
1793config DEPRECATED_PARAM_STRUCT
1794 bool "Provide old way to pass kernel parameters"
1795 depends on ATAGS
1796 help
1797 This was deprecated in 2001 and announced to live on for 5 years.
1798 Some old boot loaders still use this way.
1799
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800# Compressed boot loader in ROM. Yes, we really want to ask about
1801# TEXT and BSS so we preserve their values in the config files.
1802config ZBOOT_ROM_TEXT
1803 hex "Compressed ROM boot loader base address"
1804 default "0"
1805 help
1806 The physical address at which the ROM-able zImage is to be
1807 placed in the target. Platforms which normally make use of
1808 ROM-able zImage formats normally set this to a suitable
1809 value in their defconfig file.
1810
1811 If ZBOOT_ROM is not enabled, this has no effect.
1812
1813config ZBOOT_ROM_BSS
1814 hex "Compressed ROM boot loader BSS address"
1815 default "0"
1816 help
Dan Fandrichf8c440b2006-09-20 23:28:51 +01001817 The base address of an area of read/write memory in the target
1818 for the ROM-able zImage which must be available while the
1819 decompressor is running. It must be large enough to hold the
1820 entire decompressed kernel plus an additional 128 KiB.
1821 Platforms which normally make use of ROM-able zImage formats
1822 normally set this to a suitable value in their defconfig file.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001823
1824 If ZBOOT_ROM is not enabled, this has no effect.
1825
1826config ZBOOT_ROM
1827 bool "Compressed boot loader in ROM/flash"
1828 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
Russell King10968132014-01-01 11:59:44 +00001829 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830 help
1831 Say Y here if you intend to execute your compressed kernel image
1832 (zImage) directly from ROM or flash. If unsure, say N.
1833
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001834config ARM_APPENDED_DTB
1835 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
Russell King10968132014-01-01 11:59:44 +00001836 depends on OF
John Bonesioe2a6a3a2011-05-27 18:45:50 -04001837 help
1838 With this option, the boot code will look for a device tree binary
1839 (DTB) appended to zImage
1840 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1841
1842 This is meant as a backward compatibility convenience for those
1843 systems with a bootloader that can't be upgraded to accommodate
1844 the documented boot protocol using a device tree.
1845
1846 Beware that there is very little in terms of protection against
1847 this option being confused by leftover garbage in memory that might
1848 look like a DTB header after a reboot if no actual DTB is appended
1849 to zImage. Do not leave this option active in a production kernel
1850 if you don't intend to always append a DTB. Proper passing of the
1851 location into r2 of a bootloader provided DTB is always preferable
1852 to this option.
1853
Nicolas Pitreb90b9a32011-09-13 22:37:07 -04001854config ARM_ATAG_DTB_COMPAT
1855 bool "Supplement the appended DTB with traditional ATAG information"
1856 depends on ARM_APPENDED_DTB
1857 help
1858 Some old bootloaders can't be updated to a DTB capable one, yet
1859 they provide ATAGs with memory configuration, the ramdisk address,
1860 the kernel cmdline string, etc. Such information is dynamically
1861 provided by the bootloader and can't always be stored in a static
1862 DTB. To allow a device tree enabled kernel to be used with such
1863 bootloaders, this option allows zImage to extract the information
1864 from the ATAG list and store it at run time into the appended DTB.
1865
Genoud Richardd0f34a112012-06-26 16:37:59 +01001866choice
1867 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1868 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1869
1870config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1871 bool "Use bootloader kernel arguments if available"
1872 help
1873 Uses the command-line options passed by the boot loader instead of
1874 the device tree bootargs property. If the boot loader doesn't provide
1875 any, the device tree bootargs property will be used.
1876
1877config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1878 bool "Extend with bootloader kernel arguments"
1879 help
1880 The command-line arguments provided by the boot loader will be
1881 appended to the the device tree bootargs property.
1882
1883endchoice
1884
Linus Torvalds1da177e2005-04-16 15:20:36 -07001885config CMDLINE
1886 string "Default kernel command string"
1887 default ""
1888 help
1889 On some architectures (EBSA110 and CATS), there is currently no way
1890 for the boot loader to pass arguments to the kernel. For these
1891 architectures, you should supply some command-line options at build
1892 time by entering them here. As a minimum, you should specify the
1893 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1894
Victor Boivie4394c122011-05-04 17:07:55 +01001895choice
1896 prompt "Kernel command line type" if CMDLINE != ""
1897 default CMDLINE_FROM_BOOTLOADER
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001898 depends on ATAGS
Victor Boivie4394c122011-05-04 17:07:55 +01001899
1900config CMDLINE_FROM_BOOTLOADER
1901 bool "Use bootloader kernel arguments if available"
1902 help
1903 Uses the command-line options passed by the boot loader. If
1904 the boot loader doesn't provide any, the default kernel command
1905 string provided in CMDLINE will be used.
1906
1907config CMDLINE_EXTEND
1908 bool "Extend bootloader kernel arguments"
1909 help
1910 The command-line arguments provided by the boot loader will be
1911 appended to the default kernel command string.
1912
Alexander Holler92d20402010-02-16 19:04:53 +01001913config CMDLINE_FORCE
1914 bool "Always use the default kernel command string"
Alexander Holler92d20402010-02-16 19:04:53 +01001915 help
1916 Always use the default kernel command string, even if the boot
1917 loader passes other arguments to the kernel.
1918 This is useful if you cannot or don't want to change the
1919 command-line options your boot loader passes to the kernel.
Victor Boivie4394c122011-05-04 17:07:55 +01001920endchoice
Alexander Holler92d20402010-02-16 19:04:53 +01001921
Linus Torvalds1da177e2005-04-16 15:20:36 -07001922config XIP_KERNEL
1923 bool "Kernel Execute-In-Place from ROM"
Russell King10968132014-01-01 11:59:44 +00001924 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925 help
1926 Execute-In-Place allows the kernel to run from non-volatile storage
1927 directly addressable by the CPU, such as NOR flash. This saves RAM
1928 space since the text section of the kernel is not loaded from flash
1929 to RAM. Read-write sections, such as the data section and stack,
1930 are still copied to RAM. The XIP kernel is not compressed since
1931 it has to run directly from flash, so it will take more space to
1932 store it. The flash address used to link the kernel object files,
1933 and for storing it, is configuration dependent. Therefore, if you
1934 say Y here, you must know the proper physical address where to
1935 store the kernel image depending on your own flash memory usage.
1936
1937 Also note that the make target becomes "make xipImage" rather than
1938 "make zImage" or "make Image". The final kernel binary to put in
1939 ROM memory will be arch/arm/boot/xipImage.
1940
1941 If unsure, say N.
1942
1943config XIP_PHYS_ADDR
1944 hex "XIP Kernel Physical Location"
1945 depends on XIP_KERNEL
1946 default "0x00080000"
1947 help
1948 This is the physical address in your flash memory the kernel will
1949 be linked for and stored to. This address is dependent on your
1950 own flash usage.
1951
Richard Purdiec587e4a2007-02-06 21:29:00 +01001952config KEXEC
1953 bool "Kexec system call (EXPERIMENTAL)"
Stephen Warren19ab4282013-06-14 16:14:14 +01001954 depends on (!SMP || PM_SLEEP_SMP)
Richard Purdiec587e4a2007-02-06 21:29:00 +01001955 help
1956 kexec is a system call that implements the ability to shutdown your
1957 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante01dd2fb2007-10-20 01:34:40 +02001958 but it is independent of the system firmware. And like a reboot
Richard Purdiec587e4a2007-02-06 21:29:00 +01001959 you can start any kernel with it, not just Linux.
1960
1961 It is an ongoing process to be certain the hardware in a machine
1962 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +02001963 initially work for you.
Richard Purdiec587e4a2007-02-06 21:29:00 +01001964
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001965config ATAGS_PROC
1966 bool "Export atags in procfs"
Nicolas Pitrebd51e2f2012-09-01 03:03:25 +01001967 depends on ATAGS && KEXEC
Uli Luckasb98d7292008-02-22 16:45:18 +01001968 default y
Richard Purdie4cd9d6f2008-01-02 00:56:46 +01001969 help
1970 Should the atags used to boot the kernel be exported in an "atags"
1971 file in procfs. Useful with kexec.
1972
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01001973config CRASH_DUMP
1974 bool "Build kdump crash kernel (EXPERIMENTAL)"
Mika Westerbergcb5d39b2010-11-18 19:14:52 +01001975 help
1976 Generate crash dump after being started by kexec. This should
1977 be normally only set in special crash dump kernels which are
1978 loaded in the main kernel with kexec-tools into a specially
1979 reserved region and then later executed after a crash by
1980 kdump/kexec. The crash dump kernel must be compiled to a
1981 memory address not used by the main kernel
1982
1983 For more details see Documentation/kdump/kdump.txt
1984
Eric Miaoe69edc792010-07-05 15:56:50 +02001985config AUTO_ZRELADDR
1986 bool "Auto calculation of the decompressed kernel image address"
Eric Miaoe69edc792010-07-05 15:56:50 +02001987 help
1988 ZRELADDR is the physical address where the decompressed kernel
1989 image will be placed. If AUTO_ZRELADDR is selected, the address
1990 will be determined at run-time by masking the current IP with
1991 0xf8000000. This assumes the zImage being placed in the first 128MB
1992 from start of memory.
1993
Linus Torvalds1da177e2005-04-16 15:20:36 -07001994endmenu
1995
Russell Kingac9d7ef2008-08-18 17:26:00 +01001996menu "CPU Power Management"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997
Linus Torvalds1da177e2005-04-16 15:20:36 -07001998source "drivers/cpufreq/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999
Russell Kingac9d7ef2008-08-18 17:26:00 +01002000source "drivers/cpuidle/Kconfig"
2001
2002endmenu
2003
Linus Torvalds1da177e2005-04-16 15:20:36 -07002004menu "Floating point emulation"
2005
2006comment "At least one emulation must be selected"
2007
2008config FPE_NWFPE
2009 bool "NWFPE math emulation"
Dave Martin593c2522010-12-13 21:56:03 +01002010 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002011 ---help---
2012 Say Y to include the NWFPE floating point emulator in the kernel.
2013 This is necessary to run most binaries. Linux does not currently
2014 support floating point hardware so you need to say Y here even if
2015 your machine has an FPA or floating point co-processor podule.
2016
2017 You may say N here if you are going to load the Acorn FPEmulator
2018 early in the bootup.
2019
2020config FPE_NWFPE_XP
2021 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +00002022 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -07002023 help
2024 Say Y to include 80-bit support in the kernel floating-point
2025 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2026 Note that gcc does not generate 80-bit operations by default,
2027 so in most cases this option only enlarges the size of the
2028 floating point emulator without any good reason.
2029
2030 You almost surely want to say N here.
2031
2032config FPE_FASTFPE
2033 bool "FastFPE math emulation (EXPERIMENTAL)"
Kees Cookd6f94fa2013-01-16 18:53:14 -08002034 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035 ---help---
2036 Say Y here to include the FAST floating point emulator in the kernel.
2037 This is an experimental much faster emulator which now also has full
2038 precision for the mantissa. It does not support any exceptions.
2039 It is very simple, and approximately 3-6 times faster than NWFPE.
2040
2041 It should be sufficient for most programs. It may be not suitable
2042 for scientific calculations, but you have to check this for yourself.
2043 If you do not feel you need a faster FP emulation you should better
2044 choose NWFPE.
2045
2046config VFP
2047 bool "VFP-format floating point maths"
Russell Kinge399b1a2011-01-17 15:08:32 +00002048 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049 help
2050 Say Y to include VFP support code in the kernel. This is needed
2051 if your hardware includes a VFP unit.
2052
2053 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2054 release notes and additional status information.
2055
2056 Say N if your target does not have VFP hardware.
2057
Catalin Marinas25ebee02007-09-25 15:22:24 +01002058config VFPv3
2059 bool
2060 depends on VFP
2061 default y if CPU_V7
2062
Catalin Marinasb5872db2008-01-10 19:16:17 +01002063config NEON
2064 bool "Advanced SIMD (NEON) Extension support"
2065 depends on VFPv3 && CPU_V7
2066 help
2067 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2068 Extension.
2069
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002070config KERNEL_MODE_NEON
2071 bool "Support for NEON in kernel mode"
Russell Kingc4a30c32013-09-22 11:08:50 +01002072 depends on NEON && AEABI
Ard Biesheuvel73c132c2013-05-16 11:41:48 +02002073 help
2074 Say Y to include support for NEON in kernel mode.
2075
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076endmenu
2077
2078menu "Userspace binary formats"
2079
2080source "fs/Kconfig.binfmt"
2081
Linus Torvalds1da177e2005-04-16 15:20:36 -07002082endmenu
2083
2084menu "Power management options"
2085
Russell Kingeceab4a2005-11-15 11:31:41 +00002086source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002087
Johannes Bergf4cb5702007-12-08 02:14:00 +01002088config ARCH_SUSPEND_POSSIBLE
Ezequiel Garcia19a05192013-08-16 10:28:24 +01002089 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
Uwe Kleine-Königf0d75152012-02-01 10:00:00 +01002090 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
Johannes Bergf4cb5702007-12-08 02:14:00 +01002091 def_bool y
2092
Arnd Bergmann15e0d9e2011-10-01 21:09:39 +02002093config ARM_CPU_SUSPEND
2094 def_bool PM_SLEEP
2095
Sebastian Capella603fb422014-03-25 01:20:29 +01002096config ARCH_HIBERNATION_POSSIBLE
2097 bool
2098 depends on MMU
2099 default y if ARCH_SUSPEND_POSSIBLE
2100
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101endmenu
2102
Sam Ravnborgd5950b42005-07-11 21:03:49 -07002103source "net/Kconfig"
2104
Uwe Kleine-Königac251502009-08-13 21:09:21 +02002105source "drivers/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002106
Kumar Gala916f7432015-02-26 15:49:09 -06002107source "drivers/firmware/Kconfig"
2108
Linus Torvalds1da177e2005-04-16 15:20:36 -07002109source "fs/Kconfig"
2110
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111source "arch/arm/Kconfig.debug"
2112
2113source "security/Kconfig"
2114
2115source "crypto/Kconfig"
Ard Biesheuvel652ccae2015-03-10 09:47:44 +01002116if CRYPTO
2117source "arch/arm/crypto/Kconfig"
2118endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119
2120source "lib/Kconfig"
Christoffer Dall749cf76c2013-01-20 18:28:06 -05002121
2122source "arch/arm/kvm/Kconfig"