arm: mm: enable HAVE_RCU_TABLE_FREE logic
[deliverable/linux.git] / arch / arm / Kconfig
CommitLineData
1da177e4
LT
1config ARM
2 bool
3 default y
b1b3f49c
RK
4 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
5 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
3d06770e 6 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
171b3f0d 7 select ARCH_HAVE_CUSTOM_GPIO_H
d7018848 8 select ARCH_MIGHT_HAVE_PC_PARPORT
4badad35 9 select ARCH_SUPPORTS_ATOMIC_RMW
017f161a 10 select ARCH_USE_BUILTIN_BSWAP
0cbad9c9 11 select ARCH_USE_CMPXCHG_LOCKREF
b1b3f49c 12 select ARCH_WANT_IPC_PARSE_VERSION
ee951c63 13 select BUILDTIME_EXTABLE_SORT if MMU
171b3f0d 14 select CLONE_BACKWARDS
b1b3f49c 15 select CPU_PM if (SUSPEND || CPU_IDLE)
dce5c9e3 16 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
36d0fd21 17 select GENERIC_ALLOCATOR
4477ca45 18 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
b1b3f49c 19 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
171b3f0d 20 select GENERIC_IDLE_POLL_SETUP
b1b3f49c
RK
21 select GENERIC_IRQ_PROBE
22 select GENERIC_IRQ_SHOW
b1b3f49c 23 select GENERIC_PCI_IOMAP
38ff87f7 24 select GENERIC_SCHED_CLOCK
b1b3f49c
RK
25 select GENERIC_SMP_IDLE_THREAD
26 select GENERIC_STRNCPY_FROM_USER
27 select GENERIC_STRNLEN_USER
a71b092a 28 select HANDLE_DOMAIN_IRQ
b1b3f49c 29 select HARDIRQS_SW_RESEND
7a017721 30 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
09f05d85 31 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
5cbad0eb 32 select HAVE_ARCH_KGDB
91702175 33 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
0693bf68 34 select HAVE_ARCH_TRACEHOOK
b1b3f49c 35 select HAVE_BPF_JIT
51aaf81f 36 select HAVE_CC_STACKPROTECTOR
171b3f0d 37 select HAVE_CONTEXT_TRACKING
b1b3f49c
RK
38 select HAVE_C_RECORDMCOUNT
39 select HAVE_DEBUG_KMEMLEAK
40 select HAVE_DMA_API_DEBUG
41 select HAVE_DMA_ATTRS
42 select HAVE_DMA_CONTIGUOUS if MMU
80be7a7f 43 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
dce5c9e3 44 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
b1b3f49c 45 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
0e341af8 46 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
b1b3f49c 47 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 48 select HAVE_GENERIC_DMA_COHERENT
b1b3f49c
RK
49 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
50 select HAVE_IDE if PCI || ISA || PCMCIA
87c46b6c 51 select HAVE_IRQ_TIME_ACCOUNTING
e7db7b42 52 select HAVE_KERNEL_GZIP
f9b493ac 53 select HAVE_KERNEL_LZ4
6e8699f7 54 select HAVE_KERNEL_LZMA
b1b3f49c 55 select HAVE_KERNEL_LZO
a7f464f3 56 select HAVE_KERNEL_XZ
b1b3f49c
RK
57 select HAVE_KPROBES if !XIP_KERNEL
58 select HAVE_KRETPROBES if (HAVE_KPROBES)
59 select HAVE_MEMBLOCK
171b3f0d 60 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
b1b3f49c 61 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
7ada189f 62 select HAVE_PERF_EVENTS
49863894
WD
63 select HAVE_PERF_REGS
64 select HAVE_PERF_USER_STACK_DUMP
a0ad5496 65 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
e513f8bf 66 select HAVE_REGS_AND_STACK_ACCESS_API
b1b3f49c 67 select HAVE_SYSCALL_TRACEPOINTS
af1839eb 68 select HAVE_UID16
31c1fc81 69 select HAVE_VIRT_CPU_ACCOUNTING_GEN
da0ec6f7 70 select IRQ_FORCED_THREADING
171b3f0d 71 select MODULES_USE_ELF_REL
84f452b1 72 select NO_BOOTMEM
171b3f0d
RK
73 select OLD_SIGACTION
74 select OLD_SIGSUSPEND3
b1b3f49c
RK
75 select PERF_USE_VMALLOC
76 select RTC_LIB
77 select SYS_SUPPORTS_APM_EMULATION
171b3f0d
RK
78 # Above selects are sorted alphabetically; please add new ones
79 # according to that. Thanks.
1da177e4
LT
80 help
81 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 82 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 83 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 84 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
85 Europe. There is an ARM Linux project with a web page at
86 <http://www.arm.linux.org.uk/>.
87
74facffe 88config ARM_HAS_SG_CHAIN
308c09f1 89 select ARCH_HAS_SG_CHAIN
74facffe
RK
90 bool
91
4ce63fcd
MS
92config NEED_SG_DMA_LENGTH
93 bool
94
95config ARM_DMA_USE_IOMMU
4ce63fcd 96 bool
b1b3f49c
RK
97 select ARM_HAS_SG_CHAIN
98 select NEED_SG_DMA_LENGTH
4ce63fcd 99
60460abf
SWK
100if ARM_DMA_USE_IOMMU
101
102config ARM_DMA_IOMMU_ALIGNMENT
103 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
104 range 4 9
105 default 8
106 help
107 DMA mapping framework by default aligns all buffers to the smallest
108 PAGE_SIZE order which is greater than or equal to the requested buffer
109 size. This works well for buffers up to a few hundreds kilobytes, but
110 for larger buffers it just a waste of address space. Drivers which has
111 relatively small addressing window (like 64Mib) might run out of
112 virtual space with just a few allocations.
113
114 With this parameter you can specify the maximum PAGE_SIZE order for
115 DMA IOMMU buffers. Larger buffers will be aligned only to this
116 specified order. The order is expressed as a power of two multiplied
117 by the PAGE_SIZE.
118
119endif
120
0b05da72
HUK
121config MIGHT_HAVE_PCI
122 bool
123
75e7153a
RB
124config SYS_SUPPORTS_APM_EMULATION
125 bool
126
bc581770
LW
127config HAVE_TCM
128 bool
129 select GENERIC_ALLOCATOR
130
e119bfff
RK
131config HAVE_PROC_CPU
132 bool
133
ce816fa8 134config NO_IOPORT_MAP
5ea81769 135 bool
5ea81769 136
1da177e4
LT
137config EISA
138 bool
139 ---help---
140 The Extended Industry Standard Architecture (EISA) bus was
141 developed as an open alternative to the IBM MicroChannel bus.
142
143 The EISA bus provided some of the features of the IBM MicroChannel
144 bus while maintaining backward compatibility with cards made for
145 the older ISA bus. The EISA bus saw limited use between 1988 and
146 1995 when it was made obsolete by the PCI bus.
147
148 Say Y here if you are building a kernel for an EISA-based machine.
149
150 Otherwise, say N.
151
152config SBUS
153 bool
154
f16fb1ec
RK
155config STACKTRACE_SUPPORT
156 bool
157 default y
158
f76e9154
NP
159config HAVE_LATENCYTOP_SUPPORT
160 bool
161 depends on !SMP
162 default y
163
f16fb1ec
RK
164config LOCKDEP_SUPPORT
165 bool
166 default y
167
7ad1bcb2
RK
168config TRACE_IRQFLAGS_SUPPORT
169 bool
170 default y
171
1da177e4
LT
172config RWSEM_XCHGADD_ALGORITHM
173 bool
8a87411b 174 default y
1da177e4 175
f0d1b0b3
DH
176config ARCH_HAS_ILOG2_U32
177 bool
f0d1b0b3
DH
178
179config ARCH_HAS_ILOG2_U64
180 bool
f0d1b0b3 181
4a1b5733
EV
182config ARCH_HAS_BANDGAP
183 bool
184
b89c3b16
AM
185config GENERIC_HWEIGHT
186 bool
187 default y
188
1da177e4
LT
189config GENERIC_CALIBRATE_DELAY
190 bool
191 default y
192
a08b6b79
Z
193config ARCH_MAY_HAVE_PC_FDC
194 bool
195
5ac6da66
CL
196config ZONE_DMA
197 bool
5ac6da66 198
ccd7ab7f
FT
199config NEED_DMA_MAP_STATE
200 def_bool y
201
c7edc9e3
DL
202config ARCH_SUPPORTS_UPROBES
203 def_bool y
204
58af4a24
RH
205config ARCH_HAS_DMA_SET_COHERENT_MASK
206 bool
207
1da177e4
LT
208config GENERIC_ISA_DMA
209 bool
210
1da177e4
LT
211config FIQ
212 bool
213
13a5045d
RH
214config NEED_RET_TO_USER
215 bool
216
034d2f5a
AV
217config ARCH_MTD_XIP
218 bool
219
c760fc19
HC
220config VECTORS_BASE
221 hex
6afd6fae 222 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
223 default DRAM_BASE if REMAP_VECTORS_TO_RAM
224 default 0x00000000
225 help
19accfd3
RK
226 The base address of exception vectors. This must be two pages
227 in size.
c760fc19 228
dc21af99 229config ARM_PATCH_PHYS_VIRT
c1becedc
RK
230 bool "Patch physical to virtual translations at runtime" if EMBEDDED
231 default y
b511d75d 232 depends on !XIP_KERNEL && MMU
dc21af99
RK
233 depends on !ARCH_REALVIEW || !SPARSEMEM
234 help
111e9a5c
RK
235 Patch phys-to-virt and virt-to-phys translation functions at
236 boot and module load time according to the position of the
237 kernel in system memory.
dc21af99 238
111e9a5c 239 This can only be used with non-XIP MMU kernels where the base
daece596 240 of physical memory is at a 16MB boundary.
dc21af99 241
c1becedc
RK
242 Only disable this option if you know that you do not require
243 this feature (eg, building a kernel for a single machine) and
244 you need to shrink the kernel to the minimal size.
dc21af99 245
c334bc15
RH
246config NEED_MACH_IO_H
247 bool
248 help
249 Select this when mach/io.h is required to provide special
250 definitions for this platform. The need for mach/io.h should
251 be avoided when possible.
252
0cdc8b92 253config NEED_MACH_MEMORY_H
1b9f95f8
NP
254 bool
255 help
0cdc8b92
NP
256 Select this when mach/memory.h is required to provide special
257 definitions for this platform. The need for mach/memory.h should
258 be avoided when possible.
dc21af99 259
1b9f95f8 260config PHYS_OFFSET
974c0724 261 hex "Physical address of main memory" if MMU
c6f54a9b 262 depends on !ARM_PATCH_PHYS_VIRT
974c0724 263 default DRAM_BASE if !MMU
c6f54a9b
UKK
264 default 0x00000000 if ARCH_EBSA110 || \
265 EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
266 ARCH_FOOTBRIDGE || \
267 ARCH_INTEGRATOR || \
268 ARCH_IOP13XX || \
269 ARCH_KS8695 || \
270 (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
271 default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
272 default 0x20000000 if ARCH_S5PV210
273 default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
274 default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
275 default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
276 default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
277 default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
111e9a5c 278 help
1b9f95f8
NP
279 Please provide the physical address corresponding to the
280 location of main memory in your system.
cada3c08 281
87e040b6
SG
282config GENERIC_BUG
283 def_bool y
284 depends on BUG
285
1da177e4
LT
286source "init/Kconfig"
287
dc52ddc0
MH
288source "kernel/Kconfig.freezer"
289
1da177e4
LT
290menu "System Type"
291
3c427975
HC
292config MMU
293 bool "MMU-based Paged Memory Management Support"
294 default y
295 help
296 Select if you want MMU-based virtualised addressing space
297 support by paged memory management. If unsure, say 'Y'.
298
ccf50e23
RK
299#
300# The "ARM system type" choice list is ordered alphabetically by option
301# text. Please add new entries in the option alphabetic order.
302#
1da177e4
LT
303choice
304 prompt "ARM system type"
1420b22b
AB
305 default ARCH_VERSATILE if !MMU
306 default ARCH_MULTIPLATFORM if MMU
1da177e4 307
387798b3
RH
308config ARCH_MULTIPLATFORM
309 bool "Allow multiple platforms to be selected"
b1b3f49c 310 depends on MMU
ddb902cc 311 select ARCH_WANT_OPTIONAL_GPIOLIB
42dc836d 312 select ARM_HAS_SG_CHAIN
387798b3
RH
313 select ARM_PATCH_PHYS_VIRT
314 select AUTO_ZRELADDR
6d0add40 315 select CLKSRC_OF
66314223 316 select COMMON_CLK
ddb902cc 317 select GENERIC_CLOCKEVENTS
08d38beb 318 select MIGHT_HAVE_PCI
387798b3 319 select MULTI_IRQ_HANDLER
66314223
DN
320 select SPARSE_IRQ
321 select USE_OF
66314223 322
4af6fee1
DS
323config ARCH_INTEGRATOR
324 bool "ARM Ltd. Integrator family"
b1b3f49c 325 select ARM_AMBA
91942d17 326 select ARM_PATCH_PHYS_VIRT if MMU
fe989145 327 select AUTO_ZRELADDR
a613163d 328 select COMMON_CLK
f9a6aa43 329 select COMMON_CLK_VERSATILE
b1b3f49c 330 select GENERIC_CLOCKEVENTS
9904f793 331 select HAVE_TCM
c5a0adb5 332 select ICST
b1b3f49c 333 select MULTI_IRQ_HANDLER
f4b8b319 334 select PLAT_VERSATILE
695436e3 335 select SPARSE_IRQ
d7057e1d 336 select USE_OF
2389d501 337 select VERSATILE_FPGA_IRQ
4af6fee1
DS
338 help
339 Support for ARM's Integrator platform.
340
341config ARCH_REALVIEW
342 bool "ARM Ltd. RealView family"
b1b3f49c 343 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 344 select ARM_AMBA
b1b3f49c 345 select ARM_TIMER_SP804
f9a6aa43
LW
346 select COMMON_CLK
347 select COMMON_CLK_VERSATILE
ae30ceac 348 select GENERIC_CLOCKEVENTS
b56ba8aa 349 select GPIO_PL061 if GPIOLIB
b1b3f49c 350 select ICST
0cdc8b92 351 select NEED_MACH_MEMORY_H
b1b3f49c 352 select PLAT_VERSATILE
4af6fee1
DS
353 help
354 This enables support for ARM Ltd RealView boards.
355
356config ARCH_VERSATILE
357 bool "ARM Ltd. Versatile family"
b1b3f49c 358 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 359 select ARM_AMBA
b1b3f49c 360 select ARM_TIMER_SP804
4af6fee1 361 select ARM_VIC
6d803ba7 362 select CLKDEV_LOOKUP
b1b3f49c 363 select GENERIC_CLOCKEVENTS
aa3831cf 364 select HAVE_MACH_CLKDEV
c5a0adb5 365 select ICST
f4b8b319 366 select PLAT_VERSATILE
b1b3f49c 367 select PLAT_VERSATILE_CLOCK
2389d501 368 select VERSATILE_FPGA_IRQ
4af6fee1
DS
369 help
370 This enables support for ARM Ltd Versatile board.
371
8fc5ffa0
AV
372config ARCH_AT91
373 bool "Atmel AT91"
f373e8c0 374 select ARCH_REQUIRE_GPIOLIB
bd602995 375 select CLKDEV_LOOKUP
e261501d 376 select IRQ_DOMAIN
1ac02d79 377 select NEED_MACH_IO_H if PCCARD
6732ae5c
JCPV
378 select PINCTRL
379 select PINCTRL_AT91 if USE_OF
4af6fee1 380 help
929e994f
NF
381 This enables support for systems based on Atmel
382 AT91RM9200 and AT91SAM9* processors.
4af6fee1 383
93e22567
RK
384config ARCH_CLPS711X
385 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
a3b8d4a5 386 select ARCH_REQUIRE_GPIOLIB
ea7d1bc9 387 select AUTO_ZRELADDR
c99f72ad 388 select CLKSRC_MMIO
93e22567
RK
389 select COMMON_CLK
390 select CPU_ARM720T
4a8355c4 391 select GENERIC_CLOCKEVENTS
6597619f 392 select MFD_SYSCON
e4e3a37d 393 select SOC_BUS
93e22567
RK
394 help
395 Support for Cirrus Logic 711x/721x/731x based boards.
396
788c9700
RK
397config ARCH_GEMINI
398 bool "Cortina Systems Gemini"
788c9700 399 select ARCH_REQUIRE_GPIOLIB
f3372c01 400 select CLKSRC_MMIO
b1b3f49c 401 select CPU_FA526
f3372c01 402 select GENERIC_CLOCKEVENTS
788c9700
RK
403 help
404 Support for the Cortina Systems Gemini family SoCs
405
1da177e4
LT
406config ARCH_EBSA110
407 bool "EBSA-110"
b1b3f49c 408 select ARCH_USES_GETTIMEOFFSET
c750815e 409 select CPU_SA110
f7e68bbf 410 select ISA
c334bc15 411 select NEED_MACH_IO_H
0cdc8b92 412 select NEED_MACH_MEMORY_H
ce816fa8 413 select NO_IOPORT_MAP
1da177e4
LT
414 help
415 This is an evaluation board for the StrongARM processor available
f6c8965a 416 from Digital. It has limited hardware on-board, including an
1da177e4
LT
417 Ethernet interface, two PCMCIA sockets, two serial ports and a
418 parallel port.
419
6d85e2b0
UKK
420config ARCH_EFM32
421 bool "Energy Micro efm32"
422 depends on !MMU
423 select ARCH_REQUIRE_GPIOLIB
424 select ARM_NVIC
51aaf81f 425 select AUTO_ZRELADDR
6d85e2b0
UKK
426 select CLKSRC_OF
427 select COMMON_CLK
428 select CPU_V7M
429 select GENERIC_CLOCKEVENTS
430 select NO_DMA
ce816fa8 431 select NO_IOPORT_MAP
6d85e2b0
UKK
432 select SPARSE_IRQ
433 select USE_OF
434 help
435 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
436 processors.
437
e7736d47
LB
438config ARCH_EP93XX
439 bool "EP93xx-based"
b1b3f49c
RK
440 select ARCH_HAS_HOLES_MEMORYMODEL
441 select ARCH_REQUIRE_GPIOLIB
442 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
443 select ARM_AMBA
444 select ARM_VIC
6d803ba7 445 select CLKDEV_LOOKUP
b1b3f49c 446 select CPU_ARM920T
e7736d47
LB
447 help
448 This enables support for the Cirrus EP93xx series of CPUs.
449
1da177e4
LT
450config ARCH_FOOTBRIDGE
451 bool "FootBridge"
c750815e 452 select CPU_SA110
1da177e4 453 select FOOTBRIDGE
4e8d7637 454 select GENERIC_CLOCKEVENTS
d0ee9f40 455 select HAVE_IDE
8ef6e620 456 select NEED_MACH_IO_H if !MMU
0cdc8b92 457 select NEED_MACH_MEMORY_H
f999b8bd
MM
458 help
459 Support for systems based on the DC21285 companion chip
460 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 461
4af6fee1
DS
462config ARCH_NETX
463 bool "Hilscher NetX based"
b1b3f49c 464 select ARM_VIC
234b6ced 465 select CLKSRC_MMIO
c750815e 466 select CPU_ARM926T
2fcfe6b8 467 select GENERIC_CLOCKEVENTS
f999b8bd 468 help
4af6fee1
DS
469 This enables support for systems based on the Hilscher NetX Soc
470
3b938be6
RK
471config ARCH_IOP13XX
472 bool "IOP13xx-based"
473 depends on MMU
b1b3f49c 474 select CPU_XSC3
0cdc8b92 475 select NEED_MACH_MEMORY_H
13a5045d 476 select NEED_RET_TO_USER
b1b3f49c
RK
477 select PCI
478 select PLAT_IOP
479 select VMSPLIT_1G
37ebbcff 480 select SPARSE_IRQ
3b938be6
RK
481 help
482 Support for Intel's IOP13XX (XScale) family of processors.
483
3f7e5815
LB
484config ARCH_IOP32X
485 bool "IOP32x-based"
a4f7e763 486 depends on MMU
b1b3f49c 487 select ARCH_REQUIRE_GPIOLIB
c750815e 488 select CPU_XSCALE
e9004f50 489 select GPIO_IOP
13a5045d 490 select NEED_RET_TO_USER
f7e68bbf 491 select PCI
b1b3f49c 492 select PLAT_IOP
f999b8bd 493 help
3f7e5815
LB
494 Support for Intel's 80219 and IOP32X (XScale) family of
495 processors.
496
497config ARCH_IOP33X
498 bool "IOP33x-based"
499 depends on MMU
b1b3f49c 500 select ARCH_REQUIRE_GPIOLIB
c750815e 501 select CPU_XSCALE
e9004f50 502 select GPIO_IOP
13a5045d 503 select NEED_RET_TO_USER
3f7e5815 504 select PCI
b1b3f49c 505 select PLAT_IOP
3f7e5815
LB
506 help
507 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 508
3b938be6
RK
509config ARCH_IXP4XX
510 bool "IXP4xx-based"
a4f7e763 511 depends on MMU
58af4a24 512 select ARCH_HAS_DMA_SET_COHERENT_MASK
b1b3f49c 513 select ARCH_REQUIRE_GPIOLIB
51aaf81f 514 select ARCH_SUPPORTS_BIG_ENDIAN
234b6ced 515 select CLKSRC_MMIO
c750815e 516 select CPU_XSCALE
b1b3f49c 517 select DMABOUNCE if PCI
3b938be6 518 select GENERIC_CLOCKEVENTS
0b05da72 519 select MIGHT_HAVE_PCI
c334bc15 520 select NEED_MACH_IO_H
9296d94d 521 select USB_EHCI_BIG_ENDIAN_DESC
171b3f0d 522 select USB_EHCI_BIG_ENDIAN_MMIO
c4713074 523 help
3b938be6 524 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 525
edabd38e
SB
526config ARCH_DOVE
527 bool "Marvell Dove"
edabd38e 528 select ARCH_REQUIRE_GPIOLIB
756b2531 529 select CPU_PJ4
edabd38e 530 select GENERIC_CLOCKEVENTS
0f81bd43 531 select MIGHT_HAVE_PCI
171b3f0d 532 select MVEBU_MBUS
9139acd1
SH
533 select PINCTRL
534 select PINCTRL_DOVE
abcda1dc 535 select PLAT_ORION_LEGACY
edabd38e
SB
536 help
537 Support for the Marvell Dove SoC 88AP510
538
794d15b2
SS
539config ARCH_MV78XX0
540 bool "Marvell MV78xx0"
a8865655 541 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 542 select CPU_FEROCEON
794d15b2 543 select GENERIC_CLOCKEVENTS
171b3f0d 544 select MVEBU_MBUS
b1b3f49c 545 select PCI
abcda1dc 546 select PLAT_ORION_LEGACY
794d15b2
SS
547 help
548 Support for the following Marvell MV78xx0 series SoCs:
549 MV781x0, MV782x0.
550
9dd0b194 551config ARCH_ORION5X
585cf175
TP
552 bool "Marvell Orion"
553 depends on MMU
a8865655 554 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 555 select CPU_FEROCEON
51cbff1d 556 select GENERIC_CLOCKEVENTS
171b3f0d 557 select MVEBU_MBUS
b1b3f49c 558 select PCI
abcda1dc 559 select PLAT_ORION_LEGACY
585cf175 560 help
9dd0b194 561 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 562 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 563 Orion-2 (5281), Orion-1-90 (6183).
585cf175 564
788c9700 565config ARCH_MMP
2f7e8fae 566 bool "Marvell PXA168/910/MMP2"
788c9700 567 depends on MMU
788c9700 568 select ARCH_REQUIRE_GPIOLIB
6d803ba7 569 select CLKDEV_LOOKUP
b1b3f49c 570 select GENERIC_ALLOCATOR
788c9700 571 select GENERIC_CLOCKEVENTS
157d2644 572 select GPIO_PXA
c24b3114 573 select IRQ_DOMAIN
0f374561 574 select MULTI_IRQ_HANDLER
7c8f86a4 575 select PINCTRL
788c9700 576 select PLAT_PXA
0bd86961 577 select SPARSE_IRQ
788c9700 578 help
2f7e8fae 579 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
580
581config ARCH_KS8695
582 bool "Micrel/Kendin KS8695"
98830bc9 583 select ARCH_REQUIRE_GPIOLIB
c7e783d6 584 select CLKSRC_MMIO
b1b3f49c 585 select CPU_ARM922T
c7e783d6 586 select GENERIC_CLOCKEVENTS
b1b3f49c 587 select NEED_MACH_MEMORY_H
788c9700
RK
588 help
589 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
590 System-on-Chip devices.
591
788c9700
RK
592config ARCH_W90X900
593 bool "Nuvoton W90X900 CPU"
c52d3d68 594 select ARCH_REQUIRE_GPIOLIB
6d803ba7 595 select CLKDEV_LOOKUP
6fa5d5f7 596 select CLKSRC_MMIO
b1b3f49c 597 select CPU_ARM926T
58b5369e 598 select GENERIC_CLOCKEVENTS
788c9700 599 help
a8bc4ead 600 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
601 At present, the w90x900 has been renamed nuc900, regarding
602 the ARM series product line, you can login the following
603 link address to know more.
604
605 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
606 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 607
93e22567
RK
608config ARCH_LPC32XX
609 bool "NXP LPC32XX"
610 select ARCH_REQUIRE_GPIOLIB
611 select ARM_AMBA
612 select CLKDEV_LOOKUP
613 select CLKSRC_MMIO
614 select CPU_ARM926T
615 select GENERIC_CLOCKEVENTS
616 select HAVE_IDE
93e22567
RK
617 select USE_OF
618 help
619 Support for the NXP LPC32XX family of processors
620
1da177e4 621config ARCH_PXA
2c8086a5 622 bool "PXA2xx/PXA3xx-based"
a4f7e763 623 depends on MMU
b1b3f49c
RK
624 select ARCH_MTD_XIP
625 select ARCH_REQUIRE_GPIOLIB
626 select ARM_CPU_SUSPEND if PM
627 select AUTO_ZRELADDR
6d803ba7 628 select CLKDEV_LOOKUP
234b6ced 629 select CLKSRC_MMIO
6f6caeaa 630 select CLKSRC_OF
981d0f39 631 select GENERIC_CLOCKEVENTS
157d2644 632 select GPIO_PXA
d0ee9f40 633 select HAVE_IDE
b1b3f49c 634 select MULTI_IRQ_HANDLER
b1b3f49c
RK
635 select PLAT_PXA
636 select SPARSE_IRQ
f999b8bd 637 help
2c8086a5 638 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 639
8fc1b0f8
KG
640config ARCH_MSM
641 bool "Qualcomm MSM (non-multiplatform)"
923a081c 642 select ARCH_REQUIRE_GPIOLIB
8cc7f533 643 select COMMON_CLK
b1b3f49c 644 select GENERIC_CLOCKEVENTS
49cbe786 645 help
4b53eb4f
DW
646 Support for Qualcomm MSM/QSD based systems. This runs on the
647 apps processor of the MSM/QSD and depends on a shared memory
648 interface to the modem processor which runs the baseband
649 stack and controls some vital subsystems
650 (clock and power control, etc).
49cbe786 651
bf98c1ea 652config ARCH_SHMOBILE_LEGACY
0d9fd616 653 bool "Renesas ARM SoCs (non-multiplatform)"
bf98c1ea 654 select ARCH_SHMOBILE
91942d17 655 select ARM_PATCH_PHYS_VIRT if MMU
5e93c6b4 656 select CLKDEV_LOOKUP
0ed82bc9 657 select CPU_V7
b1b3f49c 658 select GENERIC_CLOCKEVENTS
4c3ffffd 659 select HAVE_ARM_SCU if SMP
a894fcc2 660 select HAVE_ARM_TWD if SMP
aa3831cf 661 select HAVE_MACH_CLKDEV
3b55658a 662 select HAVE_SMP
ce5ea9f3 663 select MIGHT_HAVE_CACHE_L2X0
60f1435c 664 select MULTI_IRQ_HANDLER
ce816fa8 665 select NO_IOPORT_MAP
2cd3c927 666 select PINCTRL
b1b3f49c 667 select PM_GENERIC_DOMAINS if PM
0cdc23df 668 select SH_CLK_CPG
b1b3f49c 669 select SPARSE_IRQ
c793c1b0 670 help
0d9fd616
LP
671 Support for Renesas ARM SoC platforms using a non-multiplatform
672 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
673 and RZ families.
c793c1b0 674
1da177e4
LT
675config ARCH_RPC
676 bool "RiscPC"
677 select ARCH_ACORN
a08b6b79 678 select ARCH_MAY_HAVE_PC_FDC
07f841b7 679 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 680 select ARCH_USES_GETTIMEOFFSET
fa04e209 681 select CPU_SA110
b1b3f49c 682 select FIQ
d0ee9f40 683 select HAVE_IDE
b1b3f49c
RK
684 select HAVE_PATA_PLATFORM
685 select ISA_DMA_API
c334bc15 686 select NEED_MACH_IO_H
0cdc8b92 687 select NEED_MACH_MEMORY_H
ce816fa8 688 select NO_IOPORT_MAP
b4811bac 689 select VIRT_TO_BUS
1da177e4
LT
690 help
691 On the Acorn Risc-PC, Linux can support the internal IDE disk and
692 CD-ROM interface, serial and parallel port, and the floppy drive.
693
694config ARCH_SA1100
695 bool "SA1100-based"
b1b3f49c
RK
696 select ARCH_MTD_XIP
697 select ARCH_REQUIRE_GPIOLIB
698 select ARCH_SPARSEMEM_ENABLE
699 select CLKDEV_LOOKUP
700 select CLKSRC_MMIO
1937f5b9 701 select CPU_FREQ
b1b3f49c 702 select CPU_SA1100
3e238be2 703 select GENERIC_CLOCKEVENTS
d0ee9f40 704 select HAVE_IDE
b1b3f49c 705 select ISA
0cdc8b92 706 select NEED_MACH_MEMORY_H
375dec92 707 select SPARSE_IRQ
f999b8bd
MM
708 help
709 Support for StrongARM 11x0 based boards.
1da177e4 710
b130d5c2
KK
711config ARCH_S3C24XX
712 bool "Samsung S3C24XX SoCs"
53650430 713 select ARCH_REQUIRE_GPIOLIB
335cce74 714 select ATAGS
b1b3f49c 715 select CLKDEV_LOOKUP
4280506a 716 select CLKSRC_SAMSUNG_PWM
7f78b6eb 717 select GENERIC_CLOCKEVENTS
880cf071 718 select GPIO_SAMSUNG
20676c15 719 select HAVE_S3C2410_I2C if I2C
b130d5c2 720 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 721 select HAVE_S3C_RTC if RTC_CLASS
17453dd2 722 select MULTI_IRQ_HANDLER
c334bc15 723 select NEED_MACH_IO_H
cd8dc7ae 724 select SAMSUNG_ATAGS
1da177e4 725 help
b130d5c2
KK
726 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
727 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
728 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
729 Samsung SMDK2410 development board (and derivatives).
63b1f51b 730
a08ab637
BD
731config ARCH_S3C64XX
732 bool "Samsung S3C64XX"
b1b3f49c 733 select ARCH_REQUIRE_GPIOLIB
1db0287a 734 select ARM_AMBA
89f0ce72 735 select ARM_VIC
335cce74 736 select ATAGS
b1b3f49c 737 select CLKDEV_LOOKUP
4280506a 738 select CLKSRC_SAMSUNG_PWM
ccecba3c 739 select COMMON_CLK_SAMSUNG
70bacadb 740 select CPU_V6K
04a49b71 741 select GENERIC_CLOCKEVENTS
880cf071 742 select GPIO_SAMSUNG
b1b3f49c
RK
743 select HAVE_S3C2410_I2C if I2C
744 select HAVE_S3C2410_WATCHDOG if WATCHDOG
6700397a 745 select HAVE_TCM
ce816fa8 746 select NO_IOPORT_MAP
b1b3f49c 747 select PLAT_SAMSUNG
4ab75a3f 748 select PM_GENERIC_DOMAINS if PM
b1b3f49c
RK
749 select S3C_DEV_NAND
750 select S3C_GPIO_TRACK
cd8dc7ae 751 select SAMSUNG_ATAGS
6e2d9e93 752 select SAMSUNG_WAKEMASK
88f59738 753 select SAMSUNG_WDT_RESET
a08ab637
BD
754 help
755 Samsung S3C64XX series based systems
756
7c6337e2
KH
757config ARCH_DAVINCI
758 bool "TI DaVinci"
b1b3f49c 759 select ARCH_HAS_HOLES_MEMORYMODEL
dce1115b 760 select ARCH_REQUIRE_GPIOLIB
6d803ba7 761 select CLKDEV_LOOKUP
20e9969b 762 select GENERIC_ALLOCATOR
b1b3f49c 763 select GENERIC_CLOCKEVENTS
dc7ad3b3 764 select GENERIC_IRQ_CHIP
b1b3f49c 765 select HAVE_IDE
3ad7a42d 766 select TI_PRIV_EDMA
689e331f 767 select USE_OF
b1b3f49c 768 select ZONE_DMA
7c6337e2
KH
769 help
770 Support for TI's DaVinci platform.
771
a0694861
TL
772config ARCH_OMAP1
773 bool "TI OMAP1"
00a36698 774 depends on MMU
9af915da 775 select ARCH_HAS_HOLES_MEMORYMODEL
a0694861 776 select ARCH_OMAP
21f47fbc 777 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 778 select CLKDEV_LOOKUP
d6e15d78 779 select CLKSRC_MMIO
b1b3f49c 780 select GENERIC_CLOCKEVENTS
a0694861 781 select GENERIC_IRQ_CHIP
a0694861
TL
782 select HAVE_IDE
783 select IRQ_DOMAIN
784 select NEED_MACH_IO_H if PCCARD
785 select NEED_MACH_MEMORY_H
21f47fbc 786 help
a0694861 787 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
02c981c0 788
1da177e4
LT
789endchoice
790
387798b3
RH
791menu "Multiple platform selection"
792 depends on ARCH_MULTIPLATFORM
793
794comment "CPU Core family selection"
795
f8afae40
AB
796config ARCH_MULTI_V4
797 bool "ARMv4 based platforms (FA526)"
798 depends on !ARCH_MULTI_V6_V7
799 select ARCH_MULTI_V4_V5
800 select CPU_FA526
801
387798b3
RH
802config ARCH_MULTI_V4T
803 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
387798b3 804 depends on !ARCH_MULTI_V6_V7
b1b3f49c 805 select ARCH_MULTI_V4_V5
24e860fb
AB
806 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
807 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
808 CPU_ARM925T || CPU_ARM940T)
387798b3
RH
809
810config ARCH_MULTI_V5
811 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
387798b3 812 depends on !ARCH_MULTI_V6_V7
b1b3f49c 813 select ARCH_MULTI_V4_V5
12567bbd 814 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
24e860fb
AB
815 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
816 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
387798b3
RH
817
818config ARCH_MULTI_V4_V5
819 bool
820
821config ARCH_MULTI_V6
8dda05cc 822 bool "ARMv6 based platforms (ARM11)"
387798b3 823 select ARCH_MULTI_V6_V7
42f4754a 824 select CPU_V6K
387798b3
RH
825
826config ARCH_MULTI_V7
8dda05cc 827 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
387798b3
RH
828 default y
829 select ARCH_MULTI_V6_V7
b1b3f49c 830 select CPU_V7
90bc8ac7 831 select HAVE_SMP
387798b3
RH
832
833config ARCH_MULTI_V6_V7
834 bool
9352b05b 835 select MIGHT_HAVE_CACHE_L2X0
387798b3
RH
836
837config ARCH_MULTI_CPU_AUTO
838 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
839 select ARCH_MULTI_V5
840
841endmenu
842
05e2a3de
RH
843config ARCH_VIRT
844 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
4b8b5f25 845 select ARM_AMBA
05e2a3de 846 select ARM_GIC
05e2a3de 847 select ARM_PSCI
4b8b5f25 848 select HAVE_ARM_ARCH_TIMER
05e2a3de 849
ccf50e23
RK
850#
851# This is sorted alphabetically by mach-* pathname. However, plat-*
852# Kconfigs may be included either alphabetically (according to the
853# plat- suffix) or along side the corresponding mach-* source.
854#
3e93a22b
GC
855source "arch/arm/mach-mvebu/Kconfig"
856
95b8f20f
RK
857source "arch/arm/mach-at91/Kconfig"
858
1d22924e
AB
859source "arch/arm/mach-axxia/Kconfig"
860
8ac49e04
CD
861source "arch/arm/mach-bcm/Kconfig"
862
1c37fa10
SH
863source "arch/arm/mach-berlin/Kconfig"
864
1da177e4
LT
865source "arch/arm/mach-clps711x/Kconfig"
866
d94f944e
AV
867source "arch/arm/mach-cns3xxx/Kconfig"
868
95b8f20f
RK
869source "arch/arm/mach-davinci/Kconfig"
870
871source "arch/arm/mach-dove/Kconfig"
872
e7736d47
LB
873source "arch/arm/mach-ep93xx/Kconfig"
874
1da177e4
LT
875source "arch/arm/mach-footbridge/Kconfig"
876
59d3a193
PZ
877source "arch/arm/mach-gemini/Kconfig"
878
387798b3
RH
879source "arch/arm/mach-highbank/Kconfig"
880
389ee0c2
HZ
881source "arch/arm/mach-hisi/Kconfig"
882
1da177e4
LT
883source "arch/arm/mach-integrator/Kconfig"
884
3f7e5815
LB
885source "arch/arm/mach-iop32x/Kconfig"
886
887source "arch/arm/mach-iop33x/Kconfig"
1da177e4 888
285f5fa7
DW
889source "arch/arm/mach-iop13xx/Kconfig"
890
1da177e4
LT
891source "arch/arm/mach-ixp4xx/Kconfig"
892
828989ad
SS
893source "arch/arm/mach-keystone/Kconfig"
894
95b8f20f
RK
895source "arch/arm/mach-ks8695/Kconfig"
896
3b8f5030
CC
897source "arch/arm/mach-meson/Kconfig"
898
95b8f20f
RK
899source "arch/arm/mach-msm/Kconfig"
900
17723fd3
JJ
901source "arch/arm/mach-moxart/Kconfig"
902
794d15b2
SS
903source "arch/arm/mach-mv78xx0/Kconfig"
904
3995eb82 905source "arch/arm/mach-imx/Kconfig"
1da177e4 906
f682a218
MB
907source "arch/arm/mach-mediatek/Kconfig"
908
1d3f33d5
SG
909source "arch/arm/mach-mxs/Kconfig"
910
95b8f20f 911source "arch/arm/mach-netx/Kconfig"
49cbe786 912
95b8f20f 913source "arch/arm/mach-nomadik/Kconfig"
95b8f20f 914
9851ca57
DT
915source "arch/arm/mach-nspire/Kconfig"
916
d48af15e
TL
917source "arch/arm/plat-omap/Kconfig"
918
919source "arch/arm/mach-omap1/Kconfig"
1da177e4 920
1dbae815
TL
921source "arch/arm/mach-omap2/Kconfig"
922
9dd0b194 923source "arch/arm/mach-orion5x/Kconfig"
585cf175 924
387798b3
RH
925source "arch/arm/mach-picoxcell/Kconfig"
926
95b8f20f
RK
927source "arch/arm/mach-pxa/Kconfig"
928source "arch/arm/plat-pxa/Kconfig"
585cf175 929
95b8f20f
RK
930source "arch/arm/mach-mmp/Kconfig"
931
8fc1b0f8
KG
932source "arch/arm/mach-qcom/Kconfig"
933
95b8f20f
RK
934source "arch/arm/mach-realview/Kconfig"
935
d63dc051
HS
936source "arch/arm/mach-rockchip/Kconfig"
937
95b8f20f 938source "arch/arm/mach-sa1100/Kconfig"
edabd38e 939
387798b3
RH
940source "arch/arm/mach-socfpga/Kconfig"
941
a7ed099f 942source "arch/arm/mach-spear/Kconfig"
a21765a7 943
65ebcc11
SK
944source "arch/arm/mach-sti/Kconfig"
945
85fd6d63 946source "arch/arm/mach-s3c24xx/Kconfig"
1da177e4 947
431107ea 948source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637 949
170f4e42
KK
950source "arch/arm/mach-s5pv210/Kconfig"
951
83014579 952source "arch/arm/mach-exynos/Kconfig"
e509b289 953source "arch/arm/plat-samsung/Kconfig"
cc0e72b8 954
882d01f9 955source "arch/arm/mach-shmobile/Kconfig"
52c543f9 956
3b52634f
MR
957source "arch/arm/mach-sunxi/Kconfig"
958
156a0997
BS
959source "arch/arm/mach-prima2/Kconfig"
960
c5f80065
EG
961source "arch/arm/mach-tegra/Kconfig"
962
95b8f20f 963source "arch/arm/mach-u300/Kconfig"
1da177e4 964
95b8f20f 965source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
966
967source "arch/arm/mach-versatile/Kconfig"
968
ceade897 969source "arch/arm/mach-vexpress/Kconfig"
420c34e4 970source "arch/arm/plat-versatile/Kconfig"
ceade897 971
6f35f9a9
TP
972source "arch/arm/mach-vt8500/Kconfig"
973
7ec80ddf 974source "arch/arm/mach-w90x900/Kconfig"
975
9a45eb69
JC
976source "arch/arm/mach-zynq/Kconfig"
977
1da177e4
LT
978# Definitions to make life easier
979config ARCH_ACORN
980 bool
981
7ae1f7ec
LB
982config PLAT_IOP
983 bool
469d3044 984 select GENERIC_CLOCKEVENTS
7ae1f7ec 985
69b02f6a
LB
986config PLAT_ORION
987 bool
bfe45e0b 988 select CLKSRC_MMIO
b1b3f49c 989 select COMMON_CLK
dc7ad3b3 990 select GENERIC_IRQ_CHIP
278b45b0 991 select IRQ_DOMAIN
69b02f6a 992
abcda1dc
TP
993config PLAT_ORION_LEGACY
994 bool
995 select PLAT_ORION
996
bd5ce433
EM
997config PLAT_PXA
998 bool
999
f4b8b319
RK
1000config PLAT_VERSATILE
1001 bool
1002
e3887714
RK
1003config ARM_TIMER_SP804
1004 bool
bfe45e0b 1005 select CLKSRC_MMIO
7a0eca71 1006 select CLKSRC_OF if OF
e3887714 1007
d9a1beaa
AC
1008source "arch/arm/firmware/Kconfig"
1009
1da177e4
LT
1010source arch/arm/mm/Kconfig
1011
afe4b25e 1012config IWMMXT
d93003e8
SH
1013 bool "Enable iWMMXt support"
1014 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1015 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
afe4b25e
LB
1016 help
1017 Enable support for iWMMXt context switching at run time if
1018 running on a CPU that supports it.
1019
52108641 1020config MULTI_IRQ_HANDLER
1021 bool
1022 help
1023 Allow each machine to specify it's own IRQ handler at run time.
1024
3b93e7b0
HC
1025if !MMU
1026source "arch/arm/Kconfig-nommu"
1027endif
1028
3e0a07f8
GC
1029config PJ4B_ERRATA_4742
1030 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1031 depends on CPU_PJ4B && MACH_ARMADA_370
1032 default y
1033 help
1034 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1035 Event (WFE) IDLE states, a specific timing sensitivity exists between
1036 the retiring WFI/WFE instructions and the newly issued subsequent
1037 instructions. This sensitivity can result in a CPU hang scenario.
1038 Workaround:
1039 The software must insert either a Data Synchronization Barrier (DSB)
1040 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1041 instruction
1042
f0c4b8d6
WD
1043config ARM_ERRATA_326103
1044 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1045 depends on CPU_V6
1046 help
1047 Executing a SWP instruction to read-only memory does not set bit 11
1048 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1049 treat the access as a read, preventing a COW from occurring and
1050 causing the faulting task to livelock.
1051
9cba3ccc
CM
1052config ARM_ERRATA_411920
1053 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1054 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1055 help
1056 Invalidation of the Instruction Cache operation can
1057 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1058 It does not affect the MPCore. This option enables the ARM Ltd.
1059 recommended workaround.
1060
7ce236fc
CM
1061config ARM_ERRATA_430973
1062 bool "ARM errata: Stale prediction on replaced interworking branch"
1063 depends on CPU_V7
1064 help
1065 This option enables the workaround for the 430973 Cortex-A8
1066 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1067 interworking branch is replaced with another code sequence at the
1068 same virtual address, whether due to self-modifying code or virtual
1069 to physical address re-mapping, Cortex-A8 does not recover from the
1070 stale interworking branch prediction. This results in Cortex-A8
1071 executing the new code sequence in the incorrect ARM or Thumb state.
1072 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1073 and also flushes the branch target cache at every context switch.
1074 Note that setting specific bits in the ACTLR register may not be
1075 available in non-secure mode.
1076
855c551f
CM
1077config ARM_ERRATA_458693
1078 bool "ARM errata: Processor deadlock when a false hazard is created"
1079 depends on CPU_V7
62e4d357 1080 depends on !ARCH_MULTIPLATFORM
855c551f
CM
1081 help
1082 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1083 erratum. For very specific sequences of memory operations, it is
1084 possible for a hazard condition intended for a cache line to instead
1085 be incorrectly associated with a different cache line. This false
1086 hazard might then cause a processor deadlock. The workaround enables
1087 the L1 caching of the NEON accesses and disables the PLD instruction
1088 in the ACTLR register. Note that setting specific bits in the ACTLR
1089 register may not be available in non-secure mode.
1090
0516e464
CM
1091config ARM_ERRATA_460075
1092 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1093 depends on CPU_V7
62e4d357 1094 depends on !ARCH_MULTIPLATFORM
0516e464
CM
1095 help
1096 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1097 erratum. Any asynchronous access to the L2 cache may encounter a
1098 situation in which recent store transactions to the L2 cache are lost
1099 and overwritten with stale memory contents from external memory. The
1100 workaround disables the write-allocate mode for the L2 cache via the
1101 ACTLR register. Note that setting specific bits in the ACTLR register
1102 may not be available in non-secure mode.
1103
9f05027c
WD
1104config ARM_ERRATA_742230
1105 bool "ARM errata: DMB operation may be faulty"
1106 depends on CPU_V7 && SMP
62e4d357 1107 depends on !ARCH_MULTIPLATFORM
9f05027c
WD
1108 help
1109 This option enables the workaround for the 742230 Cortex-A9
1110 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1111 between two write operations may not ensure the correct visibility
1112 ordering of the two writes. This workaround sets a specific bit in
1113 the diagnostic register of the Cortex-A9 which causes the DMB
1114 instruction to behave as a DSB, ensuring the correct behaviour of
1115 the two writes.
1116
a672e99b
WD
1117config ARM_ERRATA_742231
1118 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1119 depends on CPU_V7 && SMP
62e4d357 1120 depends on !ARCH_MULTIPLATFORM
a672e99b
WD
1121 help
1122 This option enables the workaround for the 742231 Cortex-A9
1123 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1124 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1125 accessing some data located in the same cache line, may get corrupted
1126 data due to bad handling of the address hazard when the line gets
1127 replaced from one of the CPUs at the same time as another CPU is
1128 accessing it. This workaround sets specific bits in the diagnostic
1129 register of the Cortex-A9 which reduces the linefill issuing
1130 capabilities of the processor.
1131
69155794
JM
1132config ARM_ERRATA_643719
1133 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1134 depends on CPU_V7 && SMP
1135 help
1136 This option enables the workaround for the 643719 Cortex-A9 (prior to
1137 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1138 register returns zero when it should return one. The workaround
1139 corrects this value, ensuring cache maintenance operations which use
1140 it behave as intended and avoiding data corruption.
1141
cdf357f1
WD
1142config ARM_ERRATA_720789
1143 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
e66dc745 1144 depends on CPU_V7
cdf357f1
WD
1145 help
1146 This option enables the workaround for the 720789 Cortex-A9 (prior to
1147 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1148 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1149 As a consequence of this erratum, some TLB entries which should be
1150 invalidated are not, resulting in an incoherency in the system page
1151 tables. The workaround changes the TLB flushing routines to invalidate
1152 entries regardless of the ASID.
475d92fc
WD
1153
1154config ARM_ERRATA_743622
1155 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1156 depends on CPU_V7
62e4d357 1157 depends on !ARCH_MULTIPLATFORM
475d92fc
WD
1158 help
1159 This option enables the workaround for the 743622 Cortex-A9
efbc74ac 1160 (r2p*) erratum. Under very rare conditions, a faulty
475d92fc
WD
1161 optimisation in the Cortex-A9 Store Buffer may lead to data
1162 corruption. This workaround sets a specific bit in the diagnostic
1163 register of the Cortex-A9 which disables the Store Buffer
1164 optimisation, preventing the defect from occurring. This has no
1165 visible impact on the overall performance or power consumption of the
1166 processor.
1167
9a27c27c
WD
1168config ARM_ERRATA_751472
1169 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
ba90c516 1170 depends on CPU_V7
62e4d357 1171 depends on !ARCH_MULTIPLATFORM
9a27c27c
WD
1172 help
1173 This option enables the workaround for the 751472 Cortex-A9 (prior
1174 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1175 completion of a following broadcasted operation if the second
1176 operation is received by a CPU before the ICIALLUIS has completed,
1177 potentially leading to corrupted entries in the cache or TLB.
1178
fcbdc5fe
WD
1179config ARM_ERRATA_754322
1180 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1181 depends on CPU_V7
1182 help
1183 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1184 r3p*) erratum. A speculative memory access may cause a page table walk
1185 which starts prior to an ASID switch but completes afterwards. This
1186 can populate the micro-TLB with a stale entry which may be hit with
1187 the new ASID. This workaround places two dsb instructions in the mm
1188 switching code so that no page table walks can cross the ASID switch.
1189
5dab26af
WD
1190config ARM_ERRATA_754327
1191 bool "ARM errata: no automatic Store Buffer drain"
1192 depends on CPU_V7 && SMP
1193 help
1194 This option enables the workaround for the 754327 Cortex-A9 (prior to
1195 r2p0) erratum. The Store Buffer does not have any automatic draining
1196 mechanism and therefore a livelock may occur if an external agent
1197 continuously polls a memory location waiting to observe an update.
1198 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1199 written polling loops from denying visibility of updates to memory.
1200
145e10e1
CM
1201config ARM_ERRATA_364296
1202 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
fd832478 1203 depends on CPU_V6
145e10e1
CM
1204 help
1205 This options enables the workaround for the 364296 ARM1136
1206 r0p2 erratum (possible cache data corruption with
1207 hit-under-miss enabled). It sets the undocumented bit 31 in
1208 the auxiliary control register and the FI bit in the control
1209 register, thus disabling hit-under-miss without putting the
1210 processor into full low interrupt latency mode. ARM11MPCore
1211 is not affected.
1212
f630c1bd
WD
1213config ARM_ERRATA_764369
1214 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1215 depends on CPU_V7 && SMP
1216 help
1217 This option enables the workaround for erratum 764369
1218 affecting Cortex-A9 MPCore with two or more processors (all
1219 current revisions). Under certain timing circumstances, a data
1220 cache line maintenance operation by MVA targeting an Inner
1221 Shareable memory region may fail to proceed up to either the
1222 Point of Coherency or to the Point of Unification of the
1223 system. This workaround adds a DSB instruction before the
1224 relevant cache maintenance functions and sets a specific bit
1225 in the diagnostic control register of the SCU.
1226
7253b85c
SH
1227config ARM_ERRATA_775420
1228 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1229 depends on CPU_V7
1230 help
1231 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1232 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1233 operation aborts with MMU exception, it might cause the processor
1234 to deadlock. This workaround puts DSB before executing ISB if
1235 an abort may occur on cache maintenance.
1236
93dc6887
CM
1237config ARM_ERRATA_798181
1238 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1239 depends on CPU_V7 && SMP
1240 help
1241 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1242 adequately shooting down all use of the old entries. This
1243 option enables the Linux kernel workaround for this erratum
1244 which sends an IPI to the CPUs that are running the same ASID
1245 as the one being invalidated.
1246
84b6504f
WD
1247config ARM_ERRATA_773022
1248 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1249 depends on CPU_V7
1250 help
1251 This option enables the workaround for the 773022 Cortex-A15
1252 (up to r0p4) erratum. In certain rare sequences of code, the
1253 loop buffer may deliver incorrect instructions. This
1254 workaround disables the loop buffer to avoid the erratum.
1255
1da177e4
LT
1256endmenu
1257
1258source "arch/arm/common/Kconfig"
1259
1da177e4
LT
1260menu "Bus support"
1261
1262config ARM_AMBA
1263 bool
1264
1265config ISA
1266 bool
1da177e4
LT
1267 help
1268 Find out whether you have ISA slots on your motherboard. ISA is the
1269 name of a bus system, i.e. the way the CPU talks to the other stuff
1270 inside your box. Other bus systems are PCI, EISA, MicroChannel
1271 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1272 newer boards don't support it. If you have ISA, say Y, otherwise N.
1273
065909b9 1274# Select ISA DMA controller support
1da177e4
LT
1275config ISA_DMA
1276 bool
065909b9 1277 select ISA_DMA_API
1da177e4 1278
065909b9 1279# Select ISA DMA interface
5cae841b
AV
1280config ISA_DMA_API
1281 bool
5cae841b 1282
1da177e4 1283config PCI
0b05da72 1284 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1285 help
1286 Find out whether you have a PCI motherboard. PCI is the name of a
1287 bus system, i.e. the way the CPU talks to the other stuff inside
1288 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1289 VESA. If you have PCI, say Y, otherwise N.
1290
52882173
AV
1291config PCI_DOMAINS
1292 bool
1293 depends on PCI
1294
b080ac8a
MRJ
1295config PCI_NANOENGINE
1296 bool "BSE nanoEngine PCI support"
1297 depends on SA1100_NANOENGINE
1298 help
1299 Enable PCI on the BSE nanoEngine board.
1300
36e23590
MW
1301config PCI_SYSCALL
1302 def_bool PCI
1303
a0113a99
MR
1304config PCI_HOST_ITE8152
1305 bool
1306 depends on PCI && MACH_ARMCORE
1307 default y
1308 select DMABOUNCE
1309
1da177e4 1310source "drivers/pci/Kconfig"
3f06d157 1311source "drivers/pci/pcie/Kconfig"
1da177e4
LT
1312
1313source "drivers/pcmcia/Kconfig"
1314
1315endmenu
1316
1317menu "Kernel Features"
1318
3b55658a
DM
1319config HAVE_SMP
1320 bool
1321 help
1322 This option should be selected by machines which have an SMP-
1323 capable CPU.
1324
1325 The only effect of this option is to make the SMP-related
1326 options available to the user for configuration.
1327
1da177e4 1328config SMP
bb2d8130 1329 bool "Symmetric Multi-Processing"
fbb4ddac 1330 depends on CPU_V6K || CPU_V7
bc28248e 1331 depends on GENERIC_CLOCKEVENTS
3b55658a 1332 depends on HAVE_SMP
801bb21c 1333 depends on MMU || ARM_MPU
1da177e4
LT
1334 help
1335 This enables support for systems with more than one CPU. If you have
4a474157
RG
1336 a system with only one CPU, say N. If you have a system with more
1337 than one CPU, say Y.
1da177e4 1338
4a474157 1339 If you say N here, the kernel will run on uni- and multiprocessor
1da177e4 1340 machines, but will use only one CPU of a multiprocessor machine. If
4a474157
RG
1341 you say Y here, the kernel will run on many, but not all,
1342 uniprocessor machines. On a uniprocessor machine, the kernel
1343 will run faster if you say N here.
1da177e4 1344
395cf969 1345 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1346 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1347 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1348
1349 If you don't know what to do here, say N.
1350
f00ec48f
RK
1351config SMP_ON_UP
1352 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
801bb21c 1353 depends on SMP && !XIP_KERNEL && MMU
f00ec48f
RK
1354 default y
1355 help
1356 SMP kernels contain instructions which fail on non-SMP processors.
1357 Enabling this option allows the kernel to modify itself to make
1358 these instructions safe. Disabling it allows about 1K of space
1359 savings.
1360
1361 If you don't know what to do here, say Y.
1362
c9018aab
VG
1363config ARM_CPU_TOPOLOGY
1364 bool "Support cpu topology definition"
1365 depends on SMP && CPU_V7
1366 default y
1367 help
1368 Support ARM cpu topology definition. The MPIDR register defines
1369 affinity between processors which is then used to describe the cpu
1370 topology of an ARM System.
1371
1372config SCHED_MC
1373 bool "Multi-core scheduler support"
1374 depends on ARM_CPU_TOPOLOGY
1375 help
1376 Multi-core scheduler support improves the CPU scheduler's decision
1377 making when dealing with multi-core CPU chips at a cost of slightly
1378 increased overhead in some places. If unsure say N here.
1379
1380config SCHED_SMT
1381 bool "SMT scheduler support"
1382 depends on ARM_CPU_TOPOLOGY
1383 help
1384 Improves the CPU scheduler's decision making when dealing with
1385 MultiThreading at a cost of slightly increased overhead in some
1386 places. If unsure say N here.
1387
a8cbcd92
RK
1388config HAVE_ARM_SCU
1389 bool
a8cbcd92
RK
1390 help
1391 This option enables support for the ARM system coherency unit
1392
8a4da6e3 1393config HAVE_ARM_ARCH_TIMER
022c03a2
MZ
1394 bool "Architected timer support"
1395 depends on CPU_V7
8a4da6e3 1396 select ARM_ARCH_TIMER
0c403462 1397 select GENERIC_CLOCKEVENTS
022c03a2
MZ
1398 help
1399 This option enables support for the ARM architected timer
1400
f32f4ce2
RK
1401config HAVE_ARM_TWD
1402 bool
1403 depends on SMP
da4a686a 1404 select CLKSRC_OF if OF
f32f4ce2
RK
1405 help
1406 This options enables support for the ARM timer and watchdog unit
1407
e8db288e
NP
1408config MCPM
1409 bool "Multi-Cluster Power Management"
1410 depends on CPU_V7 && SMP
1411 help
1412 This option provides the common power management infrastructure
1413 for (multi-)cluster based systems, such as big.LITTLE based
1414 systems.
1415
ebf4a5c5
HZ
1416config MCPM_QUAD_CLUSTER
1417 bool
1418 depends on MCPM
1419 help
1420 To avoid wasting resources unnecessarily, MCPM only supports up
1421 to 2 clusters by default.
1422 Platforms with 3 or 4 clusters that use MCPM must select this
1423 option to allow the additional clusters to be managed.
1424
1c33be57
NP
1425config BIG_LITTLE
1426 bool "big.LITTLE support (Experimental)"
1427 depends on CPU_V7 && SMP
1428 select MCPM
1429 help
1430 This option enables support selections for the big.LITTLE
1431 system architecture.
1432
1433config BL_SWITCHER
1434 bool "big.LITTLE switcher support"
1435 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
1c33be57 1436 select ARM_CPU_SUSPEND
51aaf81f 1437 select CPU_PM
1c33be57
NP
1438 help
1439 The big.LITTLE "switcher" provides the core functionality to
1440 transparently handle transition between a cluster of A15's
1441 and a cluster of A7's in a big.LITTLE system.
1442
b22537c6
NP
1443config BL_SWITCHER_DUMMY_IF
1444 tristate "Simple big.LITTLE switcher user interface"
1445 depends on BL_SWITCHER && DEBUG_KERNEL
1446 help
1447 This is a simple and dummy char dev interface to control
1448 the big.LITTLE switcher core code. It is meant for
1449 debugging purposes only.
1450
8d5796d2
LB
1451choice
1452 prompt "Memory split"
006fa259 1453 depends on MMU
8d5796d2
LB
1454 default VMSPLIT_3G
1455 help
1456 Select the desired split between kernel and user memory.
1457
1458 If you are not absolutely sure what you are doing, leave this
1459 option alone!
1460
1461 config VMSPLIT_3G
1462 bool "3G/1G user/kernel split"
1463 config VMSPLIT_2G
1464 bool "2G/2G user/kernel split"
1465 config VMSPLIT_1G
1466 bool "1G/3G user/kernel split"
1467endchoice
1468
1469config PAGE_OFFSET
1470 hex
006fa259 1471 default PHYS_OFFSET if !MMU
8d5796d2
LB
1472 default 0x40000000 if VMSPLIT_1G
1473 default 0x80000000 if VMSPLIT_2G
1474 default 0xC0000000
1475
1da177e4
LT
1476config NR_CPUS
1477 int "Maximum number of CPUs (2-32)"
1478 range 2 32
1479 depends on SMP
1480 default "4"
1481
a054a811 1482config HOTPLUG_CPU
00b7dede 1483 bool "Support for hot-pluggable CPUs"
40b31360 1484 depends on SMP
a054a811
RK
1485 help
1486 Say Y here to experiment with turning CPUs off and on. CPUs
1487 can be controlled through /sys/devices/system/cpu.
1488
2bdd424f
WD
1489config ARM_PSCI
1490 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1491 depends on CPU_V7
1492 help
1493 Say Y here if you want Linux to communicate with system firmware
1494 implementing the PSCI specification for CPU-centric power
1495 management operations described in ARM document number ARM DEN
1496 0022A ("Power State Coordination Interface System Software on
1497 ARM processors").
1498
2a6ad871
MR
1499# The GPIO number here must be sorted by descending number. In case of
1500# a multiplatform kernel, we just want the highest value required by the
1501# selected platforms.
44986ab0
PDSN
1502config ARCH_NR_GPIO
1503 int
3dea19e8 1504 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
aa42587a
TF
1505 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1506 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
eb171a99 1507 default 416 if ARCH_SUNXI
06b851e5 1508 default 392 if ARCH_U8500
01bb914c 1509 default 352 if ARCH_VT8500
7b5da4c3 1510 default 288 if ARCH_ROCKCHIP
2a6ad871 1511 default 264 if MACH_H4700
44986ab0
PDSN
1512 default 0
1513 help
1514 Maximum number of GPIOs in the system.
1515
1516 If unsure, leave the default value.
1517
d45a398f 1518source kernel/Kconfig.preempt
1da177e4 1519
c9218b16 1520config HZ_FIXED
f8065813 1521 int
070b8b43 1522 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
a73ddc61 1523 ARCH_S5PV210 || ARCH_EXYNOS4
5248c657 1524 default AT91_TIMER_HZ if ARCH_AT91
bf98c1ea 1525 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
47d84682 1526 default 0
c9218b16
RK
1527
1528choice
47d84682 1529 depends on HZ_FIXED = 0
c9218b16
RK
1530 prompt "Timer frequency"
1531
1532config HZ_100
1533 bool "100 Hz"
1534
1535config HZ_200
1536 bool "200 Hz"
1537
1538config HZ_250
1539 bool "250 Hz"
1540
1541config HZ_300
1542 bool "300 Hz"
1543
1544config HZ_500
1545 bool "500 Hz"
1546
1547config HZ_1000
1548 bool "1000 Hz"
1549
1550endchoice
1551
1552config HZ
1553 int
47d84682 1554 default HZ_FIXED if HZ_FIXED != 0
c9218b16
RK
1555 default 100 if HZ_100
1556 default 200 if HZ_200
1557 default 250 if HZ_250
1558 default 300 if HZ_300
1559 default 500 if HZ_500
1560 default 1000
1561
1562config SCHED_HRTICK
1563 def_bool HIGH_RES_TIMERS
f8065813 1564
16c79651 1565config THUMB2_KERNEL
bc7dea00 1566 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
4477ca45 1567 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
bc7dea00 1568 default y if CPU_THUMBONLY
16c79651
CM
1569 select AEABI
1570 select ARM_ASM_UNIFIED
89bace65 1571 select ARM_UNWIND
16c79651
CM
1572 help
1573 By enabling this option, the kernel will be compiled in
1574 Thumb-2 mode. A compiler/assembler that understand the unified
1575 ARM-Thumb syntax is needed.
1576
1577 If unsure, say N.
1578
6f685c5c
DM
1579config THUMB2_AVOID_R_ARM_THM_JUMP11
1580 bool "Work around buggy Thumb-2 short branch relocations in gas"
1581 depends on THUMB2_KERNEL && MODULES
1582 default y
1583 help
1584 Various binutils versions can resolve Thumb-2 branches to
1585 locally-defined, preemptible global symbols as short-range "b.n"
1586 branch instructions.
1587
1588 This is a problem, because there's no guarantee the final
1589 destination of the symbol, or any candidate locations for a
1590 trampoline, are within range of the branch. For this reason, the
1591 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1592 relocation in modules at all, and it makes little sense to add
1593 support.
1594
1595 The symptom is that the kernel fails with an "unsupported
1596 relocation" error when loading some modules.
1597
1598 Until fixed tools are available, passing
1599 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1600 code which hits this problem, at the cost of a bit of extra runtime
1601 stack usage in some cases.
1602
1603 The problem is described in more detail at:
1604 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1605
1606 Only Thumb-2 kernels are affected.
1607
1608 Unless you are sure your tools don't have this problem, say Y.
1609
0becb088
CM
1610config ARM_ASM_UNIFIED
1611 bool
1612
704bdda0
NP
1613config AEABI
1614 bool "Use the ARM EABI to compile the kernel"
1615 help
1616 This option allows for the kernel to be compiled using the latest
1617 ARM ABI (aka EABI). This is only useful if you are using a user
1618 space environment that is also compiled with EABI.
1619
1620 Since there are major incompatibilities between the legacy ABI and
1621 EABI, especially with regard to structure member alignment, this
1622 option also changes the kernel syscall calling convention to
1623 disambiguate both ABIs and allow for backward compatibility support
1624 (selected with CONFIG_OABI_COMPAT).
1625
1626 To use this you need GCC version 4.0.0 or later.
1627
6c90c872 1628config OABI_COMPAT
a73a3ff1 1629 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
d6f94fa0 1630 depends on AEABI && !THUMB2_KERNEL
6c90c872
NP
1631 help
1632 This option preserves the old syscall interface along with the
1633 new (ARM EABI) one. It also provides a compatibility layer to
1634 intercept syscalls that have structure arguments which layout
1635 in memory differs between the legacy ABI and the new ARM EABI
1636 (only for non "thumb" binaries). This option adds a tiny
1637 overhead to all syscalls and produces a slightly larger kernel.
91702175
KC
1638
1639 The seccomp filter system will not be available when this is
1640 selected, since there is no way yet to sensibly distinguish
1641 between calling conventions during filtering.
1642
6c90c872
NP
1643 If you know you'll be using only pure EABI user space then you
1644 can say N here. If this option is not selected and you attempt
1645 to execute a legacy ABI binary then the result will be
1646 UNPREDICTABLE (in fact it can be predicted that it won't work
b02f8467 1647 at all). If in doubt say N.
6c90c872 1648
eb33575c 1649config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1650 bool
e80d6a24 1651
05944d74
RK
1652config ARCH_SPARSEMEM_ENABLE
1653 bool
1654
07a2f737
RK
1655config ARCH_SPARSEMEM_DEFAULT
1656 def_bool ARCH_SPARSEMEM_ENABLE
1657
05944d74 1658config ARCH_SELECT_MEMORY_MODEL
be370302 1659 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1660
7b7bf499
WD
1661config HAVE_ARCH_PFN_VALID
1662 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1663
053a96ca 1664config HIGHMEM
e8db89a2
RK
1665 bool "High Memory Support"
1666 depends on MMU
053a96ca
NP
1667 help
1668 The address space of ARM processors is only 4 Gigabytes large
1669 and it has to accommodate user address space, kernel address
1670 space as well as some memory mapped IO. That means that, if you
1671 have a large amount of physical memory and/or IO, not all of the
1672 memory can be "permanently mapped" by the kernel. The physical
1673 memory that is not permanently mapped is called "high memory".
1674
1675 Depending on the selected kernel/user memory split, minimum
1676 vmalloc space and actual amount of RAM, you may not need this
1677 option which should result in a slightly faster kernel.
1678
1679 If unsure, say n.
1680
65cec8e3
RK
1681config HIGHPTE
1682 bool "Allocate 2nd-level pagetables from highmem"
1683 depends on HIGHMEM
65cec8e3 1684
1b8873a0
JI
1685config HW_PERF_EVENTS
1686 bool "Enable hardware performance counter support for perf events"
f0d1bc47 1687 depends on PERF_EVENTS
1b8873a0
JI
1688 default y
1689 help
1690 Enable hardware performance counter support for perf events. If
1691 disabled, perf events will use software events only.
1692
1355e2a6
CM
1693config SYS_SUPPORTS_HUGETLBFS
1694 def_bool y
1695 depends on ARM_LPAE
1696
8d962507
CM
1697config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1698 def_bool y
1699 depends on ARM_LPAE
1700
4bfab203
SC
1701config ARCH_WANT_GENERAL_HUGETLB
1702 def_bool y
1703
3f22ab27
DH
1704source "mm/Kconfig"
1705
c1b2d970 1706config FORCE_MAX_ZONEORDER
bf98c1ea
LP
1707 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1708 range 11 64 if ARCH_SHMOBILE_LEGACY
898f08e1 1709 default "12" if SOC_AM33XX
6d85e2b0 1710 default "9" if SA1111 || ARCH_EFM32
c1b2d970
MD
1711 default "11"
1712 help
1713 The kernel memory allocator divides physically contiguous memory
1714 blocks into "zones", where each zone is a power of two number of
1715 pages. This option selects the largest power of two that the kernel
1716 keeps in the memory allocator. If you need to allocate very large
1717 blocks of physically contiguous memory, then you may need to
1718 increase this value.
1719
1720 This config option is actually maximum order plus one. For example,
1721 a value of 11 means that the largest free memory block is 2^10 pages.
1722
1da177e4
LT
1723config ALIGNMENT_TRAP
1724 bool
f12d0d7c 1725 depends on CPU_CP15_MMU
1da177e4 1726 default y if !ARCH_EBSA110
e119bfff 1727 select HAVE_PROC_CPU if PROC_FS
1da177e4 1728 help
84eb8d06 1729 ARM processors cannot fetch/store information which is not
1da177e4
LT
1730 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1731 address divisible by 4. On 32-bit ARM processors, these non-aligned
1732 fetch/store instructions will be emulated in software if you say
1733 here, which has a severe performance impact. This is necessary for
1734 correct operation of some network protocols. With an IP-only
1735 configuration it is safe to say N, otherwise say Y.
1736
39ec58f3 1737config UACCESS_WITH_MEMCPY
38ef2ad5
LW
1738 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1739 depends on MMU
39ec58f3
LB
1740 default y if CPU_FEROCEON
1741 help
1742 Implement faster copy_to_user and clear_user methods for CPU
1743 cores where a 8-word STM instruction give significantly higher
1744 memory write throughput than a sequence of individual 32bit stores.
1745
1746 A possible side effect is a slight increase in scheduling latency
1747 between threads sharing the same address space if they invoke
1748 such copy operations with large buffers.
1749
1750 However, if the CPU data cache is using a write-allocate mode,
1751 this option is unlikely to provide any performance gain.
1752
70c70d97
NP
1753config SECCOMP
1754 bool
1755 prompt "Enable seccomp to safely compute untrusted bytecode"
1756 ---help---
1757 This kernel feature is useful for number crunching applications
1758 that may need to compute untrusted bytecode during their
1759 execution. By using pipes or other transports made available to
1760 the process as file descriptors supporting the read/write
1761 syscalls, it's possible to isolate those applications in
1762 their own address space using seccomp. Once seccomp is
1763 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1764 and the task is only allowed to execute a few safe syscalls
1765 defined by each seccomp mode.
1766
06e6295b
SS
1767config SWIOTLB
1768 def_bool y
1769
1770config IOMMU_HELPER
1771 def_bool SWIOTLB
1772
eff8d644
SS
1773config XEN_DOM0
1774 def_bool y
1775 depends on XEN
1776
1777config XEN
1778 bool "Xen guest support on ARM (EXPERIMENTAL)"
85323a99 1779 depends on ARM && AEABI && OF
f880b67d 1780 depends on CPU_V7 && !CPU_V6
85323a99 1781 depends on !GENERIC_ATOMIC64
7693decc 1782 depends on MMU
51aaf81f 1783 select ARCH_DMA_ADDR_T_64BIT
17b7ab80 1784 select ARM_PSCI
83862ccf 1785 select SWIOTLB_XEN
eff8d644
SS
1786 help
1787 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1788
1da177e4
LT
1789endmenu
1790
1791menu "Boot options"
1792
9eb8f674
GL
1793config USE_OF
1794 bool "Flattened Device Tree support"
b1b3f49c 1795 select IRQ_DOMAIN
9eb8f674
GL
1796 select OF
1797 select OF_EARLY_FLATTREE
bcedb5f9 1798 select OF_RESERVED_MEM
9eb8f674
GL
1799 help
1800 Include support for flattened device tree machine descriptions.
1801
bd51e2f5
NP
1802config ATAGS
1803 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1804 default y
1805 help
1806 This is the traditional way of passing data to the kernel at boot
1807 time. If you are solely relying on the flattened device tree (or
1808 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1809 to remove ATAGS support from your kernel binary. If unsure,
1810 leave this to y.
1811
1812config DEPRECATED_PARAM_STRUCT
1813 bool "Provide old way to pass kernel parameters"
1814 depends on ATAGS
1815 help
1816 This was deprecated in 2001 and announced to live on for 5 years.
1817 Some old boot loaders still use this way.
1818
1da177e4
LT
1819# Compressed boot loader in ROM. Yes, we really want to ask about
1820# TEXT and BSS so we preserve their values in the config files.
1821config ZBOOT_ROM_TEXT
1822 hex "Compressed ROM boot loader base address"
1823 default "0"
1824 help
1825 The physical address at which the ROM-able zImage is to be
1826 placed in the target. Platforms which normally make use of
1827 ROM-able zImage formats normally set this to a suitable
1828 value in their defconfig file.
1829
1830 If ZBOOT_ROM is not enabled, this has no effect.
1831
1832config ZBOOT_ROM_BSS
1833 hex "Compressed ROM boot loader BSS address"
1834 default "0"
1835 help
f8c440b2
DF
1836 The base address of an area of read/write memory in the target
1837 for the ROM-able zImage which must be available while the
1838 decompressor is running. It must be large enough to hold the
1839 entire decompressed kernel plus an additional 128 KiB.
1840 Platforms which normally make use of ROM-able zImage formats
1841 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1842
1843 If ZBOOT_ROM is not enabled, this has no effect.
1844
1845config ZBOOT_ROM
1846 bool "Compressed boot loader in ROM/flash"
1847 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
10968131 1848 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
1da177e4
LT
1849 help
1850 Say Y here if you intend to execute your compressed kernel image
1851 (zImage) directly from ROM or flash. If unsure, say N.
1852
090ab3ff
SH
1853choice
1854 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
d6f94fa0 1855 depends on ZBOOT_ROM && ARCH_SH7372
090ab3ff
SH
1856 default ZBOOT_ROM_NONE
1857 help
1858 Include experimental SD/MMC loading code in the ROM-able zImage.
59bf8964 1859 With this enabled it is possible to write the ROM-able zImage
090ab3ff
SH
1860 kernel image to an MMC or SD card and boot the kernel straight
1861 from the reset vector. At reset the processor Mask ROM will load
59bf8964 1862 the first part of the ROM-able zImage which in turn loads the
090ab3ff
SH
1863 rest the kernel image to RAM.
1864
1865config ZBOOT_ROM_NONE
1866 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1867 help
1868 Do not load image from SD or MMC
1869
f45b1149
SH
1870config ZBOOT_ROM_MMCIF
1871 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1872 help
090ab3ff
SH
1873 Load image from MMCIF hardware block.
1874
1875config ZBOOT_ROM_SH_MOBILE_SDHI
1876 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1877 help
1878 Load image from SDHI hardware block
1879
1880endchoice
f45b1149 1881
e2a6a3aa
JB
1882config ARM_APPENDED_DTB
1883 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
10968131 1884 depends on OF
e2a6a3aa
JB
1885 help
1886 With this option, the boot code will look for a device tree binary
1887 (DTB) appended to zImage
1888 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1889
1890 This is meant as a backward compatibility convenience for those
1891 systems with a bootloader that can't be upgraded to accommodate
1892 the documented boot protocol using a device tree.
1893
1894 Beware that there is very little in terms of protection against
1895 this option being confused by leftover garbage in memory that might
1896 look like a DTB header after a reboot if no actual DTB is appended
1897 to zImage. Do not leave this option active in a production kernel
1898 if you don't intend to always append a DTB. Proper passing of the
1899 location into r2 of a bootloader provided DTB is always preferable
1900 to this option.
1901
b90b9a38
NP
1902config ARM_ATAG_DTB_COMPAT
1903 bool "Supplement the appended DTB with traditional ATAG information"
1904 depends on ARM_APPENDED_DTB
1905 help
1906 Some old bootloaders can't be updated to a DTB capable one, yet
1907 they provide ATAGs with memory configuration, the ramdisk address,
1908 the kernel cmdline string, etc. Such information is dynamically
1909 provided by the bootloader and can't always be stored in a static
1910 DTB. To allow a device tree enabled kernel to be used with such
1911 bootloaders, this option allows zImage to extract the information
1912 from the ATAG list and store it at run time into the appended DTB.
1913
d0f34a11
GR
1914choice
1915 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1916 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1917
1918config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1919 bool "Use bootloader kernel arguments if available"
1920 help
1921 Uses the command-line options passed by the boot loader instead of
1922 the device tree bootargs property. If the boot loader doesn't provide
1923 any, the device tree bootargs property will be used.
1924
1925config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1926 bool "Extend with bootloader kernel arguments"
1927 help
1928 The command-line arguments provided by the boot loader will be
1929 appended to the the device tree bootargs property.
1930
1931endchoice
1932
1da177e4
LT
1933config CMDLINE
1934 string "Default kernel command string"
1935 default ""
1936 help
1937 On some architectures (EBSA110 and CATS), there is currently no way
1938 for the boot loader to pass arguments to the kernel. For these
1939 architectures, you should supply some command-line options at build
1940 time by entering them here. As a minimum, you should specify the
1941 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1942
4394c124
VB
1943choice
1944 prompt "Kernel command line type" if CMDLINE != ""
1945 default CMDLINE_FROM_BOOTLOADER
bd51e2f5 1946 depends on ATAGS
4394c124
VB
1947
1948config CMDLINE_FROM_BOOTLOADER
1949 bool "Use bootloader kernel arguments if available"
1950 help
1951 Uses the command-line options passed by the boot loader. If
1952 the boot loader doesn't provide any, the default kernel command
1953 string provided in CMDLINE will be used.
1954
1955config CMDLINE_EXTEND
1956 bool "Extend bootloader kernel arguments"
1957 help
1958 The command-line arguments provided by the boot loader will be
1959 appended to the default kernel command string.
1960
92d2040d
AH
1961config CMDLINE_FORCE
1962 bool "Always use the default kernel command string"
92d2040d
AH
1963 help
1964 Always use the default kernel command string, even if the boot
1965 loader passes other arguments to the kernel.
1966 This is useful if you cannot or don't want to change the
1967 command-line options your boot loader passes to the kernel.
4394c124 1968endchoice
92d2040d 1969
1da177e4
LT
1970config XIP_KERNEL
1971 bool "Kernel Execute-In-Place from ROM"
10968131 1972 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
1da177e4
LT
1973 help
1974 Execute-In-Place allows the kernel to run from non-volatile storage
1975 directly addressable by the CPU, such as NOR flash. This saves RAM
1976 space since the text section of the kernel is not loaded from flash
1977 to RAM. Read-write sections, such as the data section and stack,
1978 are still copied to RAM. The XIP kernel is not compressed since
1979 it has to run directly from flash, so it will take more space to
1980 store it. The flash address used to link the kernel object files,
1981 and for storing it, is configuration dependent. Therefore, if you
1982 say Y here, you must know the proper physical address where to
1983 store the kernel image depending on your own flash memory usage.
1984
1985 Also note that the make target becomes "make xipImage" rather than
1986 "make zImage" or "make Image". The final kernel binary to put in
1987 ROM memory will be arch/arm/boot/xipImage.
1988
1989 If unsure, say N.
1990
1991config XIP_PHYS_ADDR
1992 hex "XIP Kernel Physical Location"
1993 depends on XIP_KERNEL
1994 default "0x00080000"
1995 help
1996 This is the physical address in your flash memory the kernel will
1997 be linked for and stored to. This address is dependent on your
1998 own flash usage.
1999
c587e4a6
RP
2000config KEXEC
2001 bool "Kexec system call (EXPERIMENTAL)"
19ab428f 2002 depends on (!SMP || PM_SLEEP_SMP)
c587e4a6
RP
2003 help
2004 kexec is a system call that implements the ability to shutdown your
2005 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 2006 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
2007 you can start any kernel with it, not just Linux.
2008
2009 It is an ongoing process to be certain the hardware in a machine
2010 is properly shutdown, so do not be surprised if this code does not
bf220695 2011 initially work for you.
c587e4a6 2012
4cd9d6f7
RP
2013config ATAGS_PROC
2014 bool "Export atags in procfs"
bd51e2f5 2015 depends on ATAGS && KEXEC
b98d7291 2016 default y
4cd9d6f7
RP
2017 help
2018 Should the atags used to boot the kernel be exported in an "atags"
2019 file in procfs. Useful with kexec.
2020
cb5d39b3
MW
2021config CRASH_DUMP
2022 bool "Build kdump crash kernel (EXPERIMENTAL)"
cb5d39b3
MW
2023 help
2024 Generate crash dump after being started by kexec. This should
2025 be normally only set in special crash dump kernels which are
2026 loaded in the main kernel with kexec-tools into a specially
2027 reserved region and then later executed after a crash by
2028 kdump/kexec. The crash dump kernel must be compiled to a
2029 memory address not used by the main kernel
2030
2031 For more details see Documentation/kdump/kdump.txt
2032
e69edc79
EM
2033config AUTO_ZRELADDR
2034 bool "Auto calculation of the decompressed kernel image address"
e69edc79
EM
2035 help
2036 ZRELADDR is the physical address where the decompressed kernel
2037 image will be placed. If AUTO_ZRELADDR is selected, the address
2038 will be determined at run-time by masking the current IP with
2039 0xf8000000. This assumes the zImage being placed in the first 128MB
2040 from start of memory.
2041
1da177e4
LT
2042endmenu
2043
ac9d7efc 2044menu "CPU Power Management"
1da177e4 2045
1da177e4 2046source "drivers/cpufreq/Kconfig"
1da177e4 2047
ac9d7efc
RK
2048source "drivers/cpuidle/Kconfig"
2049
2050endmenu
2051
1da177e4
LT
2052menu "Floating point emulation"
2053
2054comment "At least one emulation must be selected"
2055
2056config FPE_NWFPE
2057 bool "NWFPE math emulation"
593c252a 2058 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2059 ---help---
2060 Say Y to include the NWFPE floating point emulator in the kernel.
2061 This is necessary to run most binaries. Linux does not currently
2062 support floating point hardware so you need to say Y here even if
2063 your machine has an FPA or floating point co-processor podule.
2064
2065 You may say N here if you are going to load the Acorn FPEmulator
2066 early in the bootup.
2067
2068config FPE_NWFPE_XP
2069 bool "Support extended precision"
bedf142b 2070 depends on FPE_NWFPE
1da177e4
LT
2071 help
2072 Say Y to include 80-bit support in the kernel floating-point
2073 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2074 Note that gcc does not generate 80-bit operations by default,
2075 so in most cases this option only enlarges the size of the
2076 floating point emulator without any good reason.
2077
2078 You almost surely want to say N here.
2079
2080config FPE_FASTFPE
2081 bool "FastFPE math emulation (EXPERIMENTAL)"
d6f94fa0 2082 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
1da177e4
LT
2083 ---help---
2084 Say Y here to include the FAST floating point emulator in the kernel.
2085 This is an experimental much faster emulator which now also has full
2086 precision for the mantissa. It does not support any exceptions.
2087 It is very simple, and approximately 3-6 times faster than NWFPE.
2088
2089 It should be sufficient for most programs. It may be not suitable
2090 for scientific calculations, but you have to check this for yourself.
2091 If you do not feel you need a faster FP emulation you should better
2092 choose NWFPE.
2093
2094config VFP
2095 bool "VFP-format floating point maths"
e399b1a4 2096 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2097 help
2098 Say Y to include VFP support code in the kernel. This is needed
2099 if your hardware includes a VFP unit.
2100
2101 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2102 release notes and additional status information.
2103
2104 Say N if your target does not have VFP hardware.
2105
25ebee02
CM
2106config VFPv3
2107 bool
2108 depends on VFP
2109 default y if CPU_V7
2110
b5872db4
CM
2111config NEON
2112 bool "Advanced SIMD (NEON) Extension support"
2113 depends on VFPv3 && CPU_V7
2114 help
2115 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2116 Extension.
2117
73c132c1
AB
2118config KERNEL_MODE_NEON
2119 bool "Support for NEON in kernel mode"
c4a30c3b 2120 depends on NEON && AEABI
73c132c1
AB
2121 help
2122 Say Y to include support for NEON in kernel mode.
2123
1da177e4
LT
2124endmenu
2125
2126menu "Userspace binary formats"
2127
2128source "fs/Kconfig.binfmt"
2129
2130config ARTHUR
2131 tristate "RISC OS personality"
704bdda0 2132 depends on !AEABI
1da177e4
LT
2133 help
2134 Say Y here to include the kernel code necessary if you want to run
2135 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2136 experimental; if this sounds frightening, say N and sleep in peace.
2137 You can also say M here to compile this support as a module (which
2138 will be called arthur).
2139
2140endmenu
2141
2142menu "Power management options"
2143
eceab4ac 2144source "kernel/power/Kconfig"
1da177e4 2145
f4cb5700 2146config ARCH_SUSPEND_POSSIBLE
19a0519d 2147 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
f0d75153 2148 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
f4cb5700
JB
2149 def_bool y
2150
15e0d9e3
AB
2151config ARM_CPU_SUSPEND
2152 def_bool PM_SLEEP
2153
603fb42a
SC
2154config ARCH_HIBERNATION_POSSIBLE
2155 bool
2156 depends on MMU
2157 default y if ARCH_SUSPEND_POSSIBLE
2158
1da177e4
LT
2159endmenu
2160
d5950b43
SR
2161source "net/Kconfig"
2162
ac25150f 2163source "drivers/Kconfig"
1da177e4
LT
2164
2165source "fs/Kconfig"
2166
1da177e4
LT
2167source "arch/arm/Kconfig.debug"
2168
2169source "security/Kconfig"
2170
2171source "crypto/Kconfig"
2172
2173source "lib/Kconfig"
749cf76c
CD
2174
2175source "arch/arm/kvm/Kconfig"
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