ARM: cache-v7: optimise test for Cortex A9 r0pX devices
[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
957e3fac 8 select ARCH_HAS_GCOV_PROFILE_ALL
d7018848 9 select ARCH_MIGHT_HAVE_PC_PARPORT
4badad35 10 select ARCH_SUPPORTS_ATOMIC_RMW
017f161a 11 select ARCH_USE_BUILTIN_BSWAP
0cbad9c9 12 select ARCH_USE_CMPXCHG_LOCKREF
b1b3f49c 13 select ARCH_WANT_IPC_PARSE_VERSION
ee951c63 14 select BUILDTIME_EXTABLE_SORT if MMU
171b3f0d 15 select CLONE_BACKWARDS
b1b3f49c 16 select CPU_PM if (SUSPEND || CPU_IDLE)
dce5c9e3 17 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
36d0fd21 18 select GENERIC_ALLOCATOR
4477ca45 19 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
b1b3f49c 20 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
171b3f0d 21 select GENERIC_IDLE_POLL_SETUP
b1b3f49c
RK
22 select GENERIC_IRQ_PROBE
23 select GENERIC_IRQ_SHOW
7c07005e 24 select GENERIC_IRQ_SHOW_LEVEL
b1b3f49c 25 select GENERIC_PCI_IOMAP
38ff87f7 26 select GENERIC_SCHED_CLOCK
b1b3f49c
RK
27 select GENERIC_SMP_IDLE_THREAD
28 select GENERIC_STRNCPY_FROM_USER
29 select GENERIC_STRNLEN_USER
a71b092a 30 select HANDLE_DOMAIN_IRQ
b1b3f49c 31 select HARDIRQS_SW_RESEND
7a017721 32 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
0b7857db 33 select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
09f05d85 34 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
5cbad0eb 35 select HAVE_ARCH_KGDB
91702175 36 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
0693bf68 37 select HAVE_ARCH_TRACEHOOK
b1b3f49c 38 select HAVE_BPF_JIT
51aaf81f 39 select HAVE_CC_STACKPROTECTOR
171b3f0d 40 select HAVE_CONTEXT_TRACKING
b1b3f49c
RK
41 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
80be7a7f 46 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
dce5c9e3 47 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
b1b3f49c 48 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
0e341af8 49 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
b1b3f49c 50 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 51 select HAVE_GENERIC_DMA_COHERENT
b1b3f49c
RK
52 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
53 select HAVE_IDE if PCI || ISA || PCMCIA
87c46b6c 54 select HAVE_IRQ_TIME_ACCOUNTING
e7db7b42 55 select HAVE_KERNEL_GZIP
f9b493ac 56 select HAVE_KERNEL_LZ4
6e8699f7 57 select HAVE_KERNEL_LZMA
b1b3f49c 58 select HAVE_KERNEL_LZO
a7f464f3 59 select HAVE_KERNEL_XZ
b1b3f49c
RK
60 select HAVE_KPROBES if !XIP_KERNEL
61 select HAVE_KRETPROBES if (HAVE_KPROBES)
62 select HAVE_MEMBLOCK
171b3f0d 63 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
b1b3f49c 64 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
0dc016db 65 select HAVE_OPTPROBES if !THUMB2_KERNEL
7ada189f 66 select HAVE_PERF_EVENTS
49863894
WD
67 select HAVE_PERF_REGS
68 select HAVE_PERF_USER_STACK_DUMP
a0ad5496 69 select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
e513f8bf 70 select HAVE_REGS_AND_STACK_ACCESS_API
b1b3f49c 71 select HAVE_SYSCALL_TRACEPOINTS
af1839eb 72 select HAVE_UID16
31c1fc81 73 select HAVE_VIRT_CPU_ACCOUNTING_GEN
da0ec6f7 74 select IRQ_FORCED_THREADING
171b3f0d 75 select MODULES_USE_ELF_REL
84f452b1 76 select NO_BOOTMEM
171b3f0d
RK
77 select OLD_SIGACTION
78 select OLD_SIGSUSPEND3
b1b3f49c
RK
79 select PERF_USE_VMALLOC
80 select RTC_LIB
81 select SYS_SUPPORTS_APM_EMULATION
171b3f0d
RK
82 # Above selects are sorted alphabetically; please add new ones
83 # according to that. Thanks.
1da177e4
LT
84 help
85 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 86 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 87 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 88 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
89 Europe. There is an ARM Linux project with a web page at
90 <http://www.arm.linux.org.uk/>.
91
74facffe 92config ARM_HAS_SG_CHAIN
308c09f1 93 select ARCH_HAS_SG_CHAIN
74facffe
RK
94 bool
95
4ce63fcd
MS
96config NEED_SG_DMA_LENGTH
97 bool
98
99config ARM_DMA_USE_IOMMU
4ce63fcd 100 bool
b1b3f49c
RK
101 select ARM_HAS_SG_CHAIN
102 select NEED_SG_DMA_LENGTH
4ce63fcd 103
60460abf
SWK
104if 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
0b05da72
HUK
125config MIGHT_HAVE_PCI
126 bool
127
75e7153a
RB
128config SYS_SUPPORTS_APM_EMULATION
129 bool
130
bc581770
LW
131config HAVE_TCM
132 bool
133 select GENERIC_ALLOCATOR
134
e119bfff
RK
135config HAVE_PROC_CPU
136 bool
137
ce816fa8 138config NO_IOPORT_MAP
5ea81769 139 bool
5ea81769 140
1da177e4
LT
141config 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
f16fb1ec
RK
159config STACKTRACE_SUPPORT
160 bool
161 default y
162
f76e9154
NP
163config HAVE_LATENCYTOP_SUPPORT
164 bool
165 depends on !SMP
166 default y
167
f16fb1ec
RK
168config LOCKDEP_SUPPORT
169 bool
170 default y
171
7ad1bcb2
RK
172config TRACE_IRQFLAGS_SUPPORT
173 bool
174 default y
175
1da177e4
LT
176config RWSEM_XCHGADD_ALGORITHM
177 bool
8a87411b 178 default y
1da177e4 179
f0d1b0b3
DH
180config ARCH_HAS_ILOG2_U32
181 bool
f0d1b0b3
DH
182
183config ARCH_HAS_ILOG2_U64
184 bool
f0d1b0b3 185
4a1b5733
EV
186config ARCH_HAS_BANDGAP
187 bool
188
b89c3b16
AM
189config GENERIC_HWEIGHT
190 bool
191 default y
192
1da177e4
LT
193config GENERIC_CALIBRATE_DELAY
194 bool
195 default y
196
a08b6b79
Z
197config ARCH_MAY_HAVE_PC_FDC
198 bool
199
5ac6da66
CL
200config ZONE_DMA
201 bool
5ac6da66 202
ccd7ab7f
FT
203config NEED_DMA_MAP_STATE
204 def_bool y
205
c7edc9e3
DL
206config ARCH_SUPPORTS_UPROBES
207 def_bool y
208
58af4a24
RH
209config ARCH_HAS_DMA_SET_COHERENT_MASK
210 bool
211
1da177e4
LT
212config GENERIC_ISA_DMA
213 bool
214
1da177e4
LT
215config FIQ
216 bool
217
13a5045d
RH
218config NEED_RET_TO_USER
219 bool
220
034d2f5a
AV
221config ARCH_MTD_XIP
222 bool
223
c760fc19
HC
224config VECTORS_BASE
225 hex
6afd6fae 226 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
227 default DRAM_BASE if REMAP_VECTORS_TO_RAM
228 default 0x00000000
229 help
19accfd3
RK
230 The base address of exception vectors. This must be two pages
231 in size.
c760fc19 232
dc21af99 233config ARM_PATCH_PHYS_VIRT
c1becedc
RK
234 bool "Patch physical to virtual translations at runtime" if EMBEDDED
235 default y
b511d75d 236 depends on !XIP_KERNEL && MMU
dc21af99
RK
237 depends on !ARCH_REALVIEW || !SPARSEMEM
238 help
111e9a5c
RK
239 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.
dc21af99 242
111e9a5c 243 This can only be used with non-XIP MMU kernels where the base
daece596 244 of physical memory is at a 16MB boundary.
dc21af99 245
c1becedc
RK
246 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.
dc21af99 249
c334bc15
RH
250config 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
0cdc8b92 257config NEED_MACH_MEMORY_H
1b9f95f8
NP
258 bool
259 help
0cdc8b92
NP
260 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.
dc21af99 263
1b9f95f8 264config PHYS_OFFSET
974c0724 265 hex "Physical address of main memory" if MMU
c6f54a9b 266 depends on !ARM_PATCH_PHYS_VIRT
974c0724 267 default DRAM_BASE if !MMU
c6f54a9b
UKK
268 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
111e9a5c 282 help
1b9f95f8
NP
283 Please provide the physical address corresponding to the
284 location of main memory in your system.
cada3c08 285
87e040b6
SG
286config GENERIC_BUG
287 def_bool y
288 depends on BUG
289
1da177e4
LT
290source "init/Kconfig"
291
dc52ddc0
MH
292source "kernel/Kconfig.freezer"
293
1da177e4
LT
294menu "System Type"
295
3c427975
HC
296config MMU
297 bool "MMU-based Paged Memory Management Support"
298 default y
299 help
300 Select if you want MMU-based virtualised addressing space
301 support by paged memory management. If unsure, say 'Y'.
302
ccf50e23
RK
303#
304# The "ARM system type" choice list is ordered alphabetically by option
305# text. Please add new entries in the option alphabetic order.
306#
1da177e4
LT
307choice
308 prompt "ARM system type"
1420b22b
AB
309 default ARCH_VERSATILE if !MMU
310 default ARCH_MULTIPLATFORM if MMU
1da177e4 311
387798b3
RH
312config ARCH_MULTIPLATFORM
313 bool "Allow multiple platforms to be selected"
b1b3f49c 314 depends on MMU
ddb902cc 315 select ARCH_WANT_OPTIONAL_GPIOLIB
42dc836d 316 select ARM_HAS_SG_CHAIN
387798b3
RH
317 select ARM_PATCH_PHYS_VIRT
318 select AUTO_ZRELADDR
6d0add40 319 select CLKSRC_OF
66314223 320 select COMMON_CLK
ddb902cc 321 select GENERIC_CLOCKEVENTS
08d38beb 322 select MIGHT_HAVE_PCI
387798b3 323 select MULTI_IRQ_HANDLER
66314223
DN
324 select SPARSE_IRQ
325 select USE_OF
66314223 326
4af6fee1
DS
327config ARCH_REALVIEW
328 bool "ARM Ltd. RealView family"
b1b3f49c 329 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 330 select ARM_AMBA
b1b3f49c 331 select ARM_TIMER_SP804
f9a6aa43
LW
332 select COMMON_CLK
333 select COMMON_CLK_VERSATILE
ae30ceac 334 select GENERIC_CLOCKEVENTS
b56ba8aa 335 select GPIO_PL061 if GPIOLIB
b1b3f49c 336 select ICST
0cdc8b92 337 select NEED_MACH_MEMORY_H
b1b3f49c 338 select PLAT_VERSATILE
81cc3f86 339 select PLAT_VERSATILE_SCHED_CLOCK
4af6fee1
DS
340 help
341 This enables support for ARM Ltd RealView boards.
342
343config ARCH_VERSATILE
344 bool "ARM Ltd. Versatile family"
b1b3f49c 345 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 346 select ARM_AMBA
b1b3f49c 347 select ARM_TIMER_SP804
4af6fee1 348 select ARM_VIC
6d803ba7 349 select CLKDEV_LOOKUP
b1b3f49c 350 select GENERIC_CLOCKEVENTS
aa3831cf 351 select HAVE_MACH_CLKDEV
c5a0adb5 352 select ICST
f4b8b319 353 select PLAT_VERSATILE
b1b3f49c 354 select PLAT_VERSATILE_CLOCK
81cc3f86 355 select PLAT_VERSATILE_SCHED_CLOCK
2389d501 356 select VERSATILE_FPGA_IRQ
4af6fee1
DS
357 help
358 This enables support for ARM Ltd Versatile board.
359
8fc5ffa0
AV
360config ARCH_AT91
361 bool "Atmel AT91"
f373e8c0 362 select ARCH_REQUIRE_GPIOLIB
bd602995 363 select CLKDEV_LOOKUP
e261501d 364 select IRQ_DOMAIN
1ac02d79 365 select NEED_MACH_IO_H if PCCARD
6732ae5c 366 select PINCTRL
d48346c1
NF
367 select PINCTRL_AT91
368 select USE_OF
4af6fee1 369 help
929e994f 370 This enables support for systems based on Atmel
32963a8e 371 AT91RM9200, AT91SAM9 and SAMA5 processors.
4af6fee1 372
93e22567
RK
373config ARCH_CLPS711X
374 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
a3b8d4a5 375 select ARCH_REQUIRE_GPIOLIB
ea7d1bc9 376 select AUTO_ZRELADDR
c99f72ad 377 select CLKSRC_MMIO
93e22567
RK
378 select COMMON_CLK
379 select CPU_ARM720T
4a8355c4 380 select GENERIC_CLOCKEVENTS
6597619f 381 select MFD_SYSCON
e4e3a37d 382 select SOC_BUS
93e22567
RK
383 help
384 Support for Cirrus Logic 711x/721x/731x based boards.
385
788c9700
RK
386config ARCH_GEMINI
387 bool "Cortina Systems Gemini"
788c9700 388 select ARCH_REQUIRE_GPIOLIB
f3372c01 389 select CLKSRC_MMIO
b1b3f49c 390 select CPU_FA526
f3372c01 391 select GENERIC_CLOCKEVENTS
788c9700
RK
392 help
393 Support for the Cortina Systems Gemini family SoCs
394
1da177e4
LT
395config ARCH_EBSA110
396 bool "EBSA-110"
b1b3f49c 397 select ARCH_USES_GETTIMEOFFSET
c750815e 398 select CPU_SA110
f7e68bbf 399 select ISA
c334bc15 400 select NEED_MACH_IO_H
0cdc8b92 401 select NEED_MACH_MEMORY_H
ce816fa8 402 select NO_IOPORT_MAP
1da177e4
LT
403 help
404 This is an evaluation board for the StrongARM processor available
f6c8965a 405 from Digital. It has limited hardware on-board, including an
1da177e4
LT
406 Ethernet interface, two PCMCIA sockets, two serial ports and a
407 parallel port.
408
6d85e2b0
UKK
409config ARCH_EFM32
410 bool "Energy Micro efm32"
411 depends on !MMU
412 select ARCH_REQUIRE_GPIOLIB
413 select ARM_NVIC
51aaf81f 414 select AUTO_ZRELADDR
6d85e2b0
UKK
415 select CLKSRC_OF
416 select COMMON_CLK
417 select CPU_V7M
418 select GENERIC_CLOCKEVENTS
419 select NO_DMA
ce816fa8 420 select NO_IOPORT_MAP
6d85e2b0
UKK
421 select SPARSE_IRQ
422 select USE_OF
423 help
424 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
425 processors.
426
e7736d47
LB
427config ARCH_EP93XX
428 bool "EP93xx-based"
b1b3f49c
RK
429 select ARCH_HAS_HOLES_MEMORYMODEL
430 select ARCH_REQUIRE_GPIOLIB
431 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
432 select ARM_AMBA
433 select ARM_VIC
6d803ba7 434 select CLKDEV_LOOKUP
b1b3f49c 435 select CPU_ARM920T
e7736d47
LB
436 help
437 This enables support for the Cirrus EP93xx series of CPUs.
438
1da177e4
LT
439config ARCH_FOOTBRIDGE
440 bool "FootBridge"
c750815e 441 select CPU_SA110
1da177e4 442 select FOOTBRIDGE
4e8d7637 443 select GENERIC_CLOCKEVENTS
d0ee9f40 444 select HAVE_IDE
8ef6e620 445 select NEED_MACH_IO_H if !MMU
0cdc8b92 446 select NEED_MACH_MEMORY_H
f999b8bd
MM
447 help
448 Support for systems based on the DC21285 companion chip
449 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 450
4af6fee1
DS
451config ARCH_NETX
452 bool "Hilscher NetX based"
b1b3f49c 453 select ARM_VIC
234b6ced 454 select CLKSRC_MMIO
c750815e 455 select CPU_ARM926T
2fcfe6b8 456 select GENERIC_CLOCKEVENTS
f999b8bd 457 help
4af6fee1
DS
458 This enables support for systems based on the Hilscher NetX Soc
459
3b938be6
RK
460config ARCH_IOP13XX
461 bool "IOP13xx-based"
462 depends on MMU
b1b3f49c 463 select CPU_XSC3
0cdc8b92 464 select NEED_MACH_MEMORY_H
13a5045d 465 select NEED_RET_TO_USER
b1b3f49c
RK
466 select PCI
467 select PLAT_IOP
468 select VMSPLIT_1G
37ebbcff 469 select SPARSE_IRQ
3b938be6
RK
470 help
471 Support for Intel's IOP13XX (XScale) family of processors.
472
3f7e5815
LB
473config ARCH_IOP32X
474 bool "IOP32x-based"
a4f7e763 475 depends on MMU
b1b3f49c 476 select ARCH_REQUIRE_GPIOLIB
c750815e 477 select CPU_XSCALE
e9004f50 478 select GPIO_IOP
13a5045d 479 select NEED_RET_TO_USER
f7e68bbf 480 select PCI
b1b3f49c 481 select PLAT_IOP
f999b8bd 482 help
3f7e5815
LB
483 Support for Intel's 80219 and IOP32X (XScale) family of
484 processors.
485
486config ARCH_IOP33X
487 bool "IOP33x-based"
488 depends on MMU
b1b3f49c 489 select ARCH_REQUIRE_GPIOLIB
c750815e 490 select CPU_XSCALE
e9004f50 491 select GPIO_IOP
13a5045d 492 select NEED_RET_TO_USER
3f7e5815 493 select PCI
b1b3f49c 494 select PLAT_IOP
3f7e5815
LB
495 help
496 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 497
3b938be6
RK
498config ARCH_IXP4XX
499 bool "IXP4xx-based"
a4f7e763 500 depends on MMU
58af4a24 501 select ARCH_HAS_DMA_SET_COHERENT_MASK
b1b3f49c 502 select ARCH_REQUIRE_GPIOLIB
51aaf81f 503 select ARCH_SUPPORTS_BIG_ENDIAN
234b6ced 504 select CLKSRC_MMIO
c750815e 505 select CPU_XSCALE
b1b3f49c 506 select DMABOUNCE if PCI
3b938be6 507 select GENERIC_CLOCKEVENTS
0b05da72 508 select MIGHT_HAVE_PCI
c334bc15 509 select NEED_MACH_IO_H
9296d94d 510 select USB_EHCI_BIG_ENDIAN_DESC
171b3f0d 511 select USB_EHCI_BIG_ENDIAN_MMIO
c4713074 512 help
3b938be6 513 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 514
edabd38e
SB
515config ARCH_DOVE
516 bool "Marvell Dove"
edabd38e 517 select ARCH_REQUIRE_GPIOLIB
756b2531 518 select CPU_PJ4
edabd38e 519 select GENERIC_CLOCKEVENTS
0f81bd43 520 select MIGHT_HAVE_PCI
171b3f0d 521 select MVEBU_MBUS
9139acd1
SH
522 select PINCTRL
523 select PINCTRL_DOVE
abcda1dc 524 select PLAT_ORION_LEGACY
edabd38e
SB
525 help
526 Support for the Marvell Dove SoC 88AP510
527
794d15b2
SS
528config ARCH_MV78XX0
529 bool "Marvell MV78xx0"
a8865655 530 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 531 select CPU_FEROCEON
794d15b2 532 select GENERIC_CLOCKEVENTS
171b3f0d 533 select MVEBU_MBUS
b1b3f49c 534 select PCI
abcda1dc 535 select PLAT_ORION_LEGACY
794d15b2
SS
536 help
537 Support for the following Marvell MV78xx0 series SoCs:
538 MV781x0, MV782x0.
539
9dd0b194 540config ARCH_ORION5X
585cf175
TP
541 bool "Marvell Orion"
542 depends on MMU
a8865655 543 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 544 select CPU_FEROCEON
51cbff1d 545 select GENERIC_CLOCKEVENTS
171b3f0d 546 select MVEBU_MBUS
b1b3f49c 547 select PCI
abcda1dc 548 select PLAT_ORION_LEGACY
585cf175 549 help
9dd0b194 550 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 551 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 552 Orion-2 (5281), Orion-1-90 (6183).
585cf175 553
788c9700 554config ARCH_MMP
2f7e8fae 555 bool "Marvell PXA168/910/MMP2"
788c9700 556 depends on MMU
788c9700 557 select ARCH_REQUIRE_GPIOLIB
6d803ba7 558 select CLKDEV_LOOKUP
b1b3f49c 559 select GENERIC_ALLOCATOR
788c9700 560 select GENERIC_CLOCKEVENTS
157d2644 561 select GPIO_PXA
c24b3114 562 select IRQ_DOMAIN
0f374561 563 select MULTI_IRQ_HANDLER
7c8f86a4 564 select PINCTRL
788c9700 565 select PLAT_PXA
0bd86961 566 select SPARSE_IRQ
788c9700 567 help
2f7e8fae 568 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
569
570config ARCH_KS8695
571 bool "Micrel/Kendin KS8695"
98830bc9 572 select ARCH_REQUIRE_GPIOLIB
c7e783d6 573 select CLKSRC_MMIO
b1b3f49c 574 select CPU_ARM922T
c7e783d6 575 select GENERIC_CLOCKEVENTS
b1b3f49c 576 select NEED_MACH_MEMORY_H
788c9700
RK
577 help
578 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
579 System-on-Chip devices.
580
788c9700
RK
581config ARCH_W90X900
582 bool "Nuvoton W90X900 CPU"
c52d3d68 583 select ARCH_REQUIRE_GPIOLIB
6d803ba7 584 select CLKDEV_LOOKUP
6fa5d5f7 585 select CLKSRC_MMIO
b1b3f49c 586 select CPU_ARM926T
58b5369e 587 select GENERIC_CLOCKEVENTS
788c9700 588 help
a8bc4ead 589 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
590 At present, the w90x900 has been renamed nuc900, regarding
591 the ARM series product line, you can login the following
592 link address to know more.
593
594 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
595 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 596
93e22567
RK
597config ARCH_LPC32XX
598 bool "NXP LPC32XX"
599 select ARCH_REQUIRE_GPIOLIB
600 select ARM_AMBA
601 select CLKDEV_LOOKUP
602 select CLKSRC_MMIO
603 select CPU_ARM926T
604 select GENERIC_CLOCKEVENTS
605 select HAVE_IDE
93e22567
RK
606 select USE_OF
607 help
608 Support for the NXP LPC32XX family of processors
609
1da177e4 610config ARCH_PXA
2c8086a5 611 bool "PXA2xx/PXA3xx-based"
a4f7e763 612 depends on MMU
b1b3f49c
RK
613 select ARCH_MTD_XIP
614 select ARCH_REQUIRE_GPIOLIB
615 select ARM_CPU_SUSPEND if PM
616 select AUTO_ZRELADDR
6d803ba7 617 select CLKDEV_LOOKUP
234b6ced 618 select CLKSRC_MMIO
6f6caeaa 619 select CLKSRC_OF
981d0f39 620 select GENERIC_CLOCKEVENTS
157d2644 621 select GPIO_PXA
d0ee9f40 622 select HAVE_IDE
b1b3f49c 623 select MULTI_IRQ_HANDLER
b1b3f49c
RK
624 select PLAT_PXA
625 select SPARSE_IRQ
f999b8bd 626 help
2c8086a5 627 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 628
8fc1b0f8
KG
629config ARCH_MSM
630 bool "Qualcomm MSM (non-multiplatform)"
923a081c 631 select ARCH_REQUIRE_GPIOLIB
8cc7f533 632 select COMMON_CLK
b1b3f49c 633 select GENERIC_CLOCKEVENTS
49cbe786 634 help
4b53eb4f
DW
635 Support for Qualcomm MSM/QSD based systems. This runs on the
636 apps processor of the MSM/QSD and depends on a shared memory
637 interface to the modem processor which runs the baseband
638 stack and controls some vital subsystems
639 (clock and power control, etc).
49cbe786 640
bf98c1ea 641config ARCH_SHMOBILE_LEGACY
0d9fd616 642 bool "Renesas ARM SoCs (non-multiplatform)"
bf98c1ea 643 select ARCH_SHMOBILE
91942d17 644 select ARM_PATCH_PHYS_VIRT if MMU
5e93c6b4 645 select CLKDEV_LOOKUP
0ed82bc9 646 select CPU_V7
b1b3f49c 647 select GENERIC_CLOCKEVENTS
4c3ffffd 648 select HAVE_ARM_SCU if SMP
a894fcc2 649 select HAVE_ARM_TWD if SMP
aa3831cf 650 select HAVE_MACH_CLKDEV
3b55658a 651 select HAVE_SMP
ce5ea9f3 652 select MIGHT_HAVE_CACHE_L2X0
60f1435c 653 select MULTI_IRQ_HANDLER
ce816fa8 654 select NO_IOPORT_MAP
2cd3c927 655 select PINCTRL
b1b3f49c 656 select PM_GENERIC_DOMAINS if PM
0cdc23df 657 select SH_CLK_CPG
b1b3f49c 658 select SPARSE_IRQ
c793c1b0 659 help
0d9fd616
LP
660 Support for Renesas ARM SoC platforms using a non-multiplatform
661 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
662 and RZ families.
c793c1b0 663
1da177e4
LT
664config ARCH_RPC
665 bool "RiscPC"
666 select ARCH_ACORN
a08b6b79 667 select ARCH_MAY_HAVE_PC_FDC
07f841b7 668 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 669 select ARCH_USES_GETTIMEOFFSET
fa04e209 670 select CPU_SA110
b1b3f49c 671 select FIQ
d0ee9f40 672 select HAVE_IDE
b1b3f49c
RK
673 select HAVE_PATA_PLATFORM
674 select ISA_DMA_API
c334bc15 675 select NEED_MACH_IO_H
0cdc8b92 676 select NEED_MACH_MEMORY_H
ce816fa8 677 select NO_IOPORT_MAP
b4811bac 678 select VIRT_TO_BUS
1da177e4
LT
679 help
680 On the Acorn Risc-PC, Linux can support the internal IDE disk and
681 CD-ROM interface, serial and parallel port, and the floppy drive.
682
683config ARCH_SA1100
684 bool "SA1100-based"
b1b3f49c
RK
685 select ARCH_MTD_XIP
686 select ARCH_REQUIRE_GPIOLIB
687 select ARCH_SPARSEMEM_ENABLE
688 select CLKDEV_LOOKUP
689 select CLKSRC_MMIO
1937f5b9 690 select CPU_FREQ
b1b3f49c 691 select CPU_SA1100
3e238be2 692 select GENERIC_CLOCKEVENTS
d0ee9f40 693 select HAVE_IDE
1eca42b4 694 select IRQ_DOMAIN
b1b3f49c 695 select ISA
affcab32 696 select MULTI_IRQ_HANDLER
0cdc8b92 697 select NEED_MACH_MEMORY_H
375dec92 698 select SPARSE_IRQ
f999b8bd
MM
699 help
700 Support for StrongARM 11x0 based boards.
1da177e4 701
b130d5c2
KK
702config ARCH_S3C24XX
703 bool "Samsung S3C24XX SoCs"
53650430 704 select ARCH_REQUIRE_GPIOLIB
335cce74 705 select ATAGS
b1b3f49c 706 select CLKDEV_LOOKUP
4280506a 707 select CLKSRC_SAMSUNG_PWM
7f78b6eb 708 select GENERIC_CLOCKEVENTS
880cf071 709 select GPIO_SAMSUNG
20676c15 710 select HAVE_S3C2410_I2C if I2C
b130d5c2 711 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 712 select HAVE_S3C_RTC if RTC_CLASS
17453dd2 713 select MULTI_IRQ_HANDLER
c334bc15 714 select NEED_MACH_IO_H
cd8dc7ae 715 select SAMSUNG_ATAGS
1da177e4 716 help
b130d5c2
KK
717 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
718 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
719 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
720 Samsung SMDK2410 development board (and derivatives).
63b1f51b 721
a08ab637
BD
722config ARCH_S3C64XX
723 bool "Samsung S3C64XX"
b1b3f49c 724 select ARCH_REQUIRE_GPIOLIB
1db0287a 725 select ARM_AMBA
89f0ce72 726 select ARM_VIC
335cce74 727 select ATAGS
b1b3f49c 728 select CLKDEV_LOOKUP
4280506a 729 select CLKSRC_SAMSUNG_PWM
ccecba3c 730 select COMMON_CLK_SAMSUNG
70bacadb 731 select CPU_V6K
04a49b71 732 select GENERIC_CLOCKEVENTS
880cf071 733 select GPIO_SAMSUNG
b1b3f49c
RK
734 select HAVE_S3C2410_I2C if I2C
735 select HAVE_S3C2410_WATCHDOG if WATCHDOG
6700397a 736 select HAVE_TCM
ce816fa8 737 select NO_IOPORT_MAP
b1b3f49c 738 select PLAT_SAMSUNG
4ab75a3f 739 select PM_GENERIC_DOMAINS if PM
b1b3f49c
RK
740 select S3C_DEV_NAND
741 select S3C_GPIO_TRACK
cd8dc7ae 742 select SAMSUNG_ATAGS
6e2d9e93 743 select SAMSUNG_WAKEMASK
88f59738 744 select SAMSUNG_WDT_RESET
a08ab637
BD
745 help
746 Samsung S3C64XX series based systems
747
7c6337e2
KH
748config ARCH_DAVINCI
749 bool "TI DaVinci"
b1b3f49c 750 select ARCH_HAS_HOLES_MEMORYMODEL
dce1115b 751 select ARCH_REQUIRE_GPIOLIB
6d803ba7 752 select CLKDEV_LOOKUP
20e9969b 753 select GENERIC_ALLOCATOR
b1b3f49c 754 select GENERIC_CLOCKEVENTS
dc7ad3b3 755 select GENERIC_IRQ_CHIP
b1b3f49c 756 select HAVE_IDE
3ad7a42d 757 select TI_PRIV_EDMA
689e331f 758 select USE_OF
b1b3f49c 759 select ZONE_DMA
7c6337e2
KH
760 help
761 Support for TI's DaVinci platform.
762
a0694861
TL
763config ARCH_OMAP1
764 bool "TI OMAP1"
00a36698 765 depends on MMU
9af915da 766 select ARCH_HAS_HOLES_MEMORYMODEL
a0694861 767 select ARCH_OMAP
21f47fbc 768 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 769 select CLKDEV_LOOKUP
d6e15d78 770 select CLKSRC_MMIO
b1b3f49c 771 select GENERIC_CLOCKEVENTS
a0694861 772 select GENERIC_IRQ_CHIP
a0694861
TL
773 select HAVE_IDE
774 select IRQ_DOMAIN
775 select NEED_MACH_IO_H if PCCARD
776 select NEED_MACH_MEMORY_H
21f47fbc 777 help
a0694861 778 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
02c981c0 779
1da177e4
LT
780endchoice
781
387798b3
RH
782menu "Multiple platform selection"
783 depends on ARCH_MULTIPLATFORM
784
785comment "CPU Core family selection"
786
f8afae40
AB
787config ARCH_MULTI_V4
788 bool "ARMv4 based platforms (FA526)"
789 depends on !ARCH_MULTI_V6_V7
790 select ARCH_MULTI_V4_V5
791 select CPU_FA526
792
387798b3
RH
793config ARCH_MULTI_V4T
794 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
387798b3 795 depends on !ARCH_MULTI_V6_V7
b1b3f49c 796 select ARCH_MULTI_V4_V5
24e860fb
AB
797 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
798 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
799 CPU_ARM925T || CPU_ARM940T)
387798b3
RH
800
801config ARCH_MULTI_V5
802 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
387798b3 803 depends on !ARCH_MULTI_V6_V7
b1b3f49c 804 select ARCH_MULTI_V4_V5
12567bbd 805 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
24e860fb
AB
806 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
807 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
387798b3
RH
808
809config ARCH_MULTI_V4_V5
810 bool
811
812config ARCH_MULTI_V6
8dda05cc 813 bool "ARMv6 based platforms (ARM11)"
387798b3 814 select ARCH_MULTI_V6_V7
42f4754a 815 select CPU_V6K
387798b3
RH
816
817config ARCH_MULTI_V7
8dda05cc 818 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
387798b3
RH
819 default y
820 select ARCH_MULTI_V6_V7
b1b3f49c 821 select CPU_V7
90bc8ac7 822 select HAVE_SMP
387798b3
RH
823
824config ARCH_MULTI_V6_V7
825 bool
9352b05b 826 select MIGHT_HAVE_CACHE_L2X0
387798b3
RH
827
828config ARCH_MULTI_CPU_AUTO
829 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
830 select ARCH_MULTI_V5
831
832endmenu
833
05e2a3de
RH
834config ARCH_VIRT
835 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
4b8b5f25 836 select ARM_AMBA
05e2a3de 837 select ARM_GIC
05e2a3de 838 select ARM_PSCI
4b8b5f25 839 select HAVE_ARM_ARCH_TIMER
05e2a3de 840
ccf50e23
RK
841#
842# This is sorted alphabetically by mach-* pathname. However, plat-*
843# Kconfigs may be included either alphabetically (according to the
844# plat- suffix) or along side the corresponding mach-* source.
845#
3e93a22b
GC
846source "arch/arm/mach-mvebu/Kconfig"
847
d9bfc86d
OR
848source "arch/arm/mach-asm9260/Kconfig"
849
95b8f20f
RK
850source "arch/arm/mach-at91/Kconfig"
851
1d22924e
AB
852source "arch/arm/mach-axxia/Kconfig"
853
8ac49e04
CD
854source "arch/arm/mach-bcm/Kconfig"
855
1c37fa10
SH
856source "arch/arm/mach-berlin/Kconfig"
857
1da177e4
LT
858source "arch/arm/mach-clps711x/Kconfig"
859
d94f944e
AV
860source "arch/arm/mach-cns3xxx/Kconfig"
861
95b8f20f
RK
862source "arch/arm/mach-davinci/Kconfig"
863
df8d742e
BS
864source "arch/arm/mach-digicolor/Kconfig"
865
95b8f20f
RK
866source "arch/arm/mach-dove/Kconfig"
867
e7736d47
LB
868source "arch/arm/mach-ep93xx/Kconfig"
869
1da177e4
LT
870source "arch/arm/mach-footbridge/Kconfig"
871
59d3a193
PZ
872source "arch/arm/mach-gemini/Kconfig"
873
387798b3
RH
874source "arch/arm/mach-highbank/Kconfig"
875
389ee0c2
HZ
876source "arch/arm/mach-hisi/Kconfig"
877
1da177e4
LT
878source "arch/arm/mach-integrator/Kconfig"
879
3f7e5815
LB
880source "arch/arm/mach-iop32x/Kconfig"
881
882source "arch/arm/mach-iop33x/Kconfig"
1da177e4 883
285f5fa7
DW
884source "arch/arm/mach-iop13xx/Kconfig"
885
1da177e4
LT
886source "arch/arm/mach-ixp4xx/Kconfig"
887
828989ad
SS
888source "arch/arm/mach-keystone/Kconfig"
889
95b8f20f
RK
890source "arch/arm/mach-ks8695/Kconfig"
891
3b8f5030
CC
892source "arch/arm/mach-meson/Kconfig"
893
95b8f20f
RK
894source "arch/arm/mach-msm/Kconfig"
895
17723fd3
JJ
896source "arch/arm/mach-moxart/Kconfig"
897
794d15b2
SS
898source "arch/arm/mach-mv78xx0/Kconfig"
899
3995eb82 900source "arch/arm/mach-imx/Kconfig"
1da177e4 901
f682a218
MB
902source "arch/arm/mach-mediatek/Kconfig"
903
1d3f33d5
SG
904source "arch/arm/mach-mxs/Kconfig"
905
95b8f20f 906source "arch/arm/mach-netx/Kconfig"
49cbe786 907
95b8f20f 908source "arch/arm/mach-nomadik/Kconfig"
95b8f20f 909
9851ca57
DT
910source "arch/arm/mach-nspire/Kconfig"
911
d48af15e
TL
912source "arch/arm/plat-omap/Kconfig"
913
914source "arch/arm/mach-omap1/Kconfig"
1da177e4 915
1dbae815
TL
916source "arch/arm/mach-omap2/Kconfig"
917
9dd0b194 918source "arch/arm/mach-orion5x/Kconfig"
585cf175 919
387798b3
RH
920source "arch/arm/mach-picoxcell/Kconfig"
921
95b8f20f
RK
922source "arch/arm/mach-pxa/Kconfig"
923source "arch/arm/plat-pxa/Kconfig"
585cf175 924
95b8f20f
RK
925source "arch/arm/mach-mmp/Kconfig"
926
8fc1b0f8
KG
927source "arch/arm/mach-qcom/Kconfig"
928
95b8f20f
RK
929source "arch/arm/mach-realview/Kconfig"
930
d63dc051
HS
931source "arch/arm/mach-rockchip/Kconfig"
932
95b8f20f 933source "arch/arm/mach-sa1100/Kconfig"
edabd38e 934
387798b3
RH
935source "arch/arm/mach-socfpga/Kconfig"
936
a7ed099f 937source "arch/arm/mach-spear/Kconfig"
a21765a7 938
65ebcc11
SK
939source "arch/arm/mach-sti/Kconfig"
940
85fd6d63 941source "arch/arm/mach-s3c24xx/Kconfig"
1da177e4 942
431107ea 943source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637 944
170f4e42
KK
945source "arch/arm/mach-s5pv210/Kconfig"
946
83014579 947source "arch/arm/mach-exynos/Kconfig"
e509b289 948source "arch/arm/plat-samsung/Kconfig"
cc0e72b8 949
882d01f9 950source "arch/arm/mach-shmobile/Kconfig"
52c543f9 951
3b52634f
MR
952source "arch/arm/mach-sunxi/Kconfig"
953
156a0997
BS
954source "arch/arm/mach-prima2/Kconfig"
955
c5f80065
EG
956source "arch/arm/mach-tegra/Kconfig"
957
95b8f20f 958source "arch/arm/mach-u300/Kconfig"
1da177e4 959
95b8f20f 960source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
961
962source "arch/arm/mach-versatile/Kconfig"
963
ceade897 964source "arch/arm/mach-vexpress/Kconfig"
420c34e4 965source "arch/arm/plat-versatile/Kconfig"
ceade897 966
6f35f9a9
TP
967source "arch/arm/mach-vt8500/Kconfig"
968
7ec80ddf 969source "arch/arm/mach-w90x900/Kconfig"
970
9a45eb69
JC
971source "arch/arm/mach-zynq/Kconfig"
972
1da177e4
LT
973# Definitions to make life easier
974config ARCH_ACORN
975 bool
976
7ae1f7ec
LB
977config PLAT_IOP
978 bool
469d3044 979 select GENERIC_CLOCKEVENTS
7ae1f7ec 980
69b02f6a
LB
981config PLAT_ORION
982 bool
bfe45e0b 983 select CLKSRC_MMIO
b1b3f49c 984 select COMMON_CLK
dc7ad3b3 985 select GENERIC_IRQ_CHIP
278b45b0 986 select IRQ_DOMAIN
69b02f6a 987
abcda1dc
TP
988config PLAT_ORION_LEGACY
989 bool
990 select PLAT_ORION
991
bd5ce433
EM
992config PLAT_PXA
993 bool
994
f4b8b319
RK
995config PLAT_VERSATILE
996 bool
997
e3887714
RK
998config ARM_TIMER_SP804
999 bool
bfe45e0b 1000 select CLKSRC_MMIO
7a0eca71 1001 select CLKSRC_OF if OF
e3887714 1002
d9a1beaa
AC
1003source "arch/arm/firmware/Kconfig"
1004
1da177e4
LT
1005source arch/arm/mm/Kconfig
1006
afe4b25e 1007config IWMMXT
d93003e8
SH
1008 bool "Enable iWMMXt support"
1009 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1010 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
afe4b25e
LB
1011 help
1012 Enable support for iWMMXt context switching at run time if
1013 running on a CPU that supports it.
1014
52108641 1015config MULTI_IRQ_HANDLER
1016 bool
1017 help
1018 Allow each machine to specify it's own IRQ handler at run time.
1019
3b93e7b0
HC
1020if !MMU
1021source "arch/arm/Kconfig-nommu"
1022endif
1023
3e0a07f8
GC
1024config PJ4B_ERRATA_4742
1025 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1026 depends on CPU_PJ4B && MACH_ARMADA_370
1027 default y
1028 help
1029 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1030 Event (WFE) IDLE states, a specific timing sensitivity exists between
1031 the retiring WFI/WFE instructions and the newly issued subsequent
1032 instructions. This sensitivity can result in a CPU hang scenario.
1033 Workaround:
1034 The software must insert either a Data Synchronization Barrier (DSB)
1035 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1036 instruction
1037
f0c4b8d6
WD
1038config ARM_ERRATA_326103
1039 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1040 depends on CPU_V6
1041 help
1042 Executing a SWP instruction to read-only memory does not set bit 11
1043 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1044 treat the access as a read, preventing a COW from occurring and
1045 causing the faulting task to livelock.
1046
9cba3ccc
CM
1047config ARM_ERRATA_411920
1048 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1049 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1050 help
1051 Invalidation of the Instruction Cache operation can
1052 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1053 It does not affect the MPCore. This option enables the ARM Ltd.
1054 recommended workaround.
1055
7ce236fc
CM
1056config ARM_ERRATA_430973
1057 bool "ARM errata: Stale prediction on replaced interworking branch"
1058 depends on CPU_V7
1059 help
1060 This option enables the workaround for the 430973 Cortex-A8
1061 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1062 interworking branch is replaced with another code sequence at the
1063 same virtual address, whether due to self-modifying code or virtual
1064 to physical address re-mapping, Cortex-A8 does not recover from the
1065 stale interworking branch prediction. This results in Cortex-A8
1066 executing the new code sequence in the incorrect ARM or Thumb state.
1067 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1068 and also flushes the branch target cache at every context switch.
1069 Note that setting specific bits in the ACTLR register may not be
1070 available in non-secure mode.
1071
855c551f
CM
1072config ARM_ERRATA_458693
1073 bool "ARM errata: Processor deadlock when a false hazard is created"
1074 depends on CPU_V7
62e4d357 1075 depends on !ARCH_MULTIPLATFORM
855c551f
CM
1076 help
1077 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1078 erratum. For very specific sequences of memory operations, it is
1079 possible for a hazard condition intended for a cache line to instead
1080 be incorrectly associated with a different cache line. This false
1081 hazard might then cause a processor deadlock. The workaround enables
1082 the L1 caching of the NEON accesses and disables the PLD instruction
1083 in the ACTLR register. Note that setting specific bits in the ACTLR
1084 register may not be available in non-secure mode.
1085
0516e464
CM
1086config ARM_ERRATA_460075
1087 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1088 depends on CPU_V7
62e4d357 1089 depends on !ARCH_MULTIPLATFORM
0516e464
CM
1090 help
1091 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1092 erratum. Any asynchronous access to the L2 cache may encounter a
1093 situation in which recent store transactions to the L2 cache are lost
1094 and overwritten with stale memory contents from external memory. The
1095 workaround disables the write-allocate mode for the L2 cache via the
1096 ACTLR register. Note that setting specific bits in the ACTLR register
1097 may not be available in non-secure mode.
1098
9f05027c
WD
1099config ARM_ERRATA_742230
1100 bool "ARM errata: DMB operation may be faulty"
1101 depends on CPU_V7 && SMP
62e4d357 1102 depends on !ARCH_MULTIPLATFORM
9f05027c
WD
1103 help
1104 This option enables the workaround for the 742230 Cortex-A9
1105 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1106 between two write operations may not ensure the correct visibility
1107 ordering of the two writes. This workaround sets a specific bit in
1108 the diagnostic register of the Cortex-A9 which causes the DMB
1109 instruction to behave as a DSB, ensuring the correct behaviour of
1110 the two writes.
1111
a672e99b
WD
1112config ARM_ERRATA_742231
1113 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1114 depends on CPU_V7 && SMP
62e4d357 1115 depends on !ARCH_MULTIPLATFORM
a672e99b
WD
1116 help
1117 This option enables the workaround for the 742231 Cortex-A9
1118 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1119 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1120 accessing some data located in the same cache line, may get corrupted
1121 data due to bad handling of the address hazard when the line gets
1122 replaced from one of the CPUs at the same time as another CPU is
1123 accessing it. This workaround sets specific bits in the diagnostic
1124 register of the Cortex-A9 which reduces the linefill issuing
1125 capabilities of the processor.
1126
69155794
JM
1127config ARM_ERRATA_643719
1128 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1129 depends on CPU_V7 && SMP
1130 help
1131 This option enables the workaround for the 643719 Cortex-A9 (prior to
1132 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1133 register returns zero when it should return one. The workaround
1134 corrects this value, ensuring cache maintenance operations which use
1135 it behave as intended and avoiding data corruption.
1136
cdf357f1
WD
1137config ARM_ERRATA_720789
1138 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
e66dc745 1139 depends on CPU_V7
cdf357f1
WD
1140 help
1141 This option enables the workaround for the 720789 Cortex-A9 (prior to
1142 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1143 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1144 As a consequence of this erratum, some TLB entries which should be
1145 invalidated are not, resulting in an incoherency in the system page
1146 tables. The workaround changes the TLB flushing routines to invalidate
1147 entries regardless of the ASID.
475d92fc
WD
1148
1149config ARM_ERRATA_743622
1150 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1151 depends on CPU_V7
62e4d357 1152 depends on !ARCH_MULTIPLATFORM
475d92fc
WD
1153 help
1154 This option enables the workaround for the 743622 Cortex-A9
efbc74ac 1155 (r2p*) erratum. Under very rare conditions, a faulty
475d92fc
WD
1156 optimisation in the Cortex-A9 Store Buffer may lead to data
1157 corruption. This workaround sets a specific bit in the diagnostic
1158 register of the Cortex-A9 which disables the Store Buffer
1159 optimisation, preventing the defect from occurring. This has no
1160 visible impact on the overall performance or power consumption of the
1161 processor.
1162
9a27c27c
WD
1163config ARM_ERRATA_751472
1164 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
ba90c516 1165 depends on CPU_V7
62e4d357 1166 depends on !ARCH_MULTIPLATFORM
9a27c27c
WD
1167 help
1168 This option enables the workaround for the 751472 Cortex-A9 (prior
1169 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1170 completion of a following broadcasted operation if the second
1171 operation is received by a CPU before the ICIALLUIS has completed,
1172 potentially leading to corrupted entries in the cache or TLB.
1173
fcbdc5fe
WD
1174config ARM_ERRATA_754322
1175 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1176 depends on CPU_V7
1177 help
1178 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1179 r3p*) erratum. A speculative memory access may cause a page table walk
1180 which starts prior to an ASID switch but completes afterwards. This
1181 can populate the micro-TLB with a stale entry which may be hit with
1182 the new ASID. This workaround places two dsb instructions in the mm
1183 switching code so that no page table walks can cross the ASID switch.
1184
5dab26af
WD
1185config ARM_ERRATA_754327
1186 bool "ARM errata: no automatic Store Buffer drain"
1187 depends on CPU_V7 && SMP
1188 help
1189 This option enables the workaround for the 754327 Cortex-A9 (prior to
1190 r2p0) erratum. The Store Buffer does not have any automatic draining
1191 mechanism and therefore a livelock may occur if an external agent
1192 continuously polls a memory location waiting to observe an update.
1193 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1194 written polling loops from denying visibility of updates to memory.
1195
145e10e1
CM
1196config ARM_ERRATA_364296
1197 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
fd832478 1198 depends on CPU_V6
145e10e1
CM
1199 help
1200 This options enables the workaround for the 364296 ARM1136
1201 r0p2 erratum (possible cache data corruption with
1202 hit-under-miss enabled). It sets the undocumented bit 31 in
1203 the auxiliary control register and the FI bit in the control
1204 register, thus disabling hit-under-miss without putting the
1205 processor into full low interrupt latency mode. ARM11MPCore
1206 is not affected.
1207
f630c1bd
WD
1208config ARM_ERRATA_764369
1209 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1210 depends on CPU_V7 && SMP
1211 help
1212 This option enables the workaround for erratum 764369
1213 affecting Cortex-A9 MPCore with two or more processors (all
1214 current revisions). Under certain timing circumstances, a data
1215 cache line maintenance operation by MVA targeting an Inner
1216 Shareable memory region may fail to proceed up to either the
1217 Point of Coherency or to the Point of Unification of the
1218 system. This workaround adds a DSB instruction before the
1219 relevant cache maintenance functions and sets a specific bit
1220 in the diagnostic control register of the SCU.
1221
7253b85c
SH
1222config ARM_ERRATA_775420
1223 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1224 depends on CPU_V7
1225 help
1226 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1227 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1228 operation aborts with MMU exception, it might cause the processor
1229 to deadlock. This workaround puts DSB before executing ISB if
1230 an abort may occur on cache maintenance.
1231
93dc6887
CM
1232config ARM_ERRATA_798181
1233 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1234 depends on CPU_V7 && SMP
1235 help
1236 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1237 adequately shooting down all use of the old entries. This
1238 option enables the Linux kernel workaround for this erratum
1239 which sends an IPI to the CPUs that are running the same ASID
1240 as the one being invalidated.
1241
84b6504f
WD
1242config ARM_ERRATA_773022
1243 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1244 depends on CPU_V7
1245 help
1246 This option enables the workaround for the 773022 Cortex-A15
1247 (up to r0p4) erratum. In certain rare sequences of code, the
1248 loop buffer may deliver incorrect instructions. This
1249 workaround disables the loop buffer to avoid the erratum.
1250
1da177e4
LT
1251endmenu
1252
1253source "arch/arm/common/Kconfig"
1254
1da177e4
LT
1255menu "Bus support"
1256
1da177e4
LT
1257config ISA
1258 bool
1da177e4
LT
1259 help
1260 Find out whether you have ISA slots on your motherboard. ISA is the
1261 name of a bus system, i.e. the way the CPU talks to the other stuff
1262 inside your box. Other bus systems are PCI, EISA, MicroChannel
1263 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1264 newer boards don't support it. If you have ISA, say Y, otherwise N.
1265
065909b9 1266# Select ISA DMA controller support
1da177e4
LT
1267config ISA_DMA
1268 bool
065909b9 1269 select ISA_DMA_API
1da177e4 1270
065909b9 1271# Select ISA DMA interface
5cae841b
AV
1272config ISA_DMA_API
1273 bool
5cae841b 1274
1da177e4 1275config PCI
0b05da72 1276 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1277 help
1278 Find out whether you have a PCI motherboard. PCI is the name of a
1279 bus system, i.e. the way the CPU talks to the other stuff inside
1280 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1281 VESA. If you have PCI, say Y, otherwise N.
1282
52882173
AV
1283config PCI_DOMAINS
1284 bool
1285 depends on PCI
1286
8c7d1474
LP
1287config PCI_DOMAINS_GENERIC
1288 def_bool PCI_DOMAINS
1289
b080ac8a
MRJ
1290config PCI_NANOENGINE
1291 bool "BSE nanoEngine PCI support"
1292 depends on SA1100_NANOENGINE
1293 help
1294 Enable PCI on the BSE nanoEngine board.
1295
36e23590
MW
1296config PCI_SYSCALL
1297 def_bool PCI
1298
a0113a99
MR
1299config PCI_HOST_ITE8152
1300 bool
1301 depends on PCI && MACH_ARMCORE
1302 default y
1303 select DMABOUNCE
1304
1da177e4 1305source "drivers/pci/Kconfig"
3f06d157 1306source "drivers/pci/pcie/Kconfig"
1da177e4
LT
1307
1308source "drivers/pcmcia/Kconfig"
1309
1310endmenu
1311
1312menu "Kernel Features"
1313
3b55658a
DM
1314config HAVE_SMP
1315 bool
1316 help
1317 This option should be selected by machines which have an SMP-
1318 capable CPU.
1319
1320 The only effect of this option is to make the SMP-related
1321 options available to the user for configuration.
1322
1da177e4 1323config SMP
bb2d8130 1324 bool "Symmetric Multi-Processing"
fbb4ddac 1325 depends on CPU_V6K || CPU_V7
bc28248e 1326 depends on GENERIC_CLOCKEVENTS
3b55658a 1327 depends on HAVE_SMP
801bb21c 1328 depends on MMU || ARM_MPU
1da177e4
LT
1329 help
1330 This enables support for systems with more than one CPU. If you have
4a474157
RG
1331 a system with only one CPU, say N. If you have a system with more
1332 than one CPU, say Y.
1da177e4 1333
4a474157 1334 If you say N here, the kernel will run on uni- and multiprocessor
1da177e4 1335 machines, but will use only one CPU of a multiprocessor machine. If
4a474157
RG
1336 you say Y here, the kernel will run on many, but not all,
1337 uniprocessor machines. On a uniprocessor machine, the kernel
1338 will run faster if you say N here.
1da177e4 1339
395cf969 1340 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1341 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1342 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1343
1344 If you don't know what to do here, say N.
1345
f00ec48f 1346config SMP_ON_UP
5744ff43 1347 bool "Allow booting SMP kernel on uniprocessor systems"
801bb21c 1348 depends on SMP && !XIP_KERNEL && MMU
f00ec48f
RK
1349 default y
1350 help
1351 SMP kernels contain instructions which fail on non-SMP processors.
1352 Enabling this option allows the kernel to modify itself to make
1353 these instructions safe. Disabling it allows about 1K of space
1354 savings.
1355
1356 If you don't know what to do here, say Y.
1357
c9018aab
VG
1358config ARM_CPU_TOPOLOGY
1359 bool "Support cpu topology definition"
1360 depends on SMP && CPU_V7
1361 default y
1362 help
1363 Support ARM cpu topology definition. The MPIDR register defines
1364 affinity between processors which is then used to describe the cpu
1365 topology of an ARM System.
1366
1367config SCHED_MC
1368 bool "Multi-core scheduler support"
1369 depends on ARM_CPU_TOPOLOGY
1370 help
1371 Multi-core scheduler support improves the CPU scheduler's decision
1372 making when dealing with multi-core CPU chips at a cost of slightly
1373 increased overhead in some places. If unsure say N here.
1374
1375config SCHED_SMT
1376 bool "SMT scheduler support"
1377 depends on ARM_CPU_TOPOLOGY
1378 help
1379 Improves the CPU scheduler's decision making when dealing with
1380 MultiThreading at a cost of slightly increased overhead in some
1381 places. If unsure say N here.
1382
a8cbcd92
RK
1383config HAVE_ARM_SCU
1384 bool
a8cbcd92
RK
1385 help
1386 This option enables support for the ARM system coherency unit
1387
8a4da6e3 1388config HAVE_ARM_ARCH_TIMER
022c03a2
MZ
1389 bool "Architected timer support"
1390 depends on CPU_V7
8a4da6e3 1391 select ARM_ARCH_TIMER
0c403462 1392 select GENERIC_CLOCKEVENTS
022c03a2
MZ
1393 help
1394 This option enables support for the ARM architected timer
1395
f32f4ce2
RK
1396config HAVE_ARM_TWD
1397 bool
1398 depends on SMP
da4a686a 1399 select CLKSRC_OF if OF
f32f4ce2
RK
1400 help
1401 This options enables support for the ARM timer and watchdog unit
1402
e8db288e
NP
1403config MCPM
1404 bool "Multi-Cluster Power Management"
1405 depends on CPU_V7 && SMP
1406 help
1407 This option provides the common power management infrastructure
1408 for (multi-)cluster based systems, such as big.LITTLE based
1409 systems.
1410
ebf4a5c5
HZ
1411config MCPM_QUAD_CLUSTER
1412 bool
1413 depends on MCPM
1414 help
1415 To avoid wasting resources unnecessarily, MCPM only supports up
1416 to 2 clusters by default.
1417 Platforms with 3 or 4 clusters that use MCPM must select this
1418 option to allow the additional clusters to be managed.
1419
1c33be57
NP
1420config BIG_LITTLE
1421 bool "big.LITTLE support (Experimental)"
1422 depends on CPU_V7 && SMP
1423 select MCPM
1424 help
1425 This option enables support selections for the big.LITTLE
1426 system architecture.
1427
1428config BL_SWITCHER
1429 bool "big.LITTLE switcher support"
1430 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
1c33be57 1431 select ARM_CPU_SUSPEND
51aaf81f 1432 select CPU_PM
1c33be57
NP
1433 help
1434 The big.LITTLE "switcher" provides the core functionality to
1435 transparently handle transition between a cluster of A15's
1436 and a cluster of A7's in a big.LITTLE system.
1437
b22537c6
NP
1438config BL_SWITCHER_DUMMY_IF
1439 tristate "Simple big.LITTLE switcher user interface"
1440 depends on BL_SWITCHER && DEBUG_KERNEL
1441 help
1442 This is a simple and dummy char dev interface to control
1443 the big.LITTLE switcher core code. It is meant for
1444 debugging purposes only.
1445
8d5796d2
LB
1446choice
1447 prompt "Memory split"
006fa259 1448 depends on MMU
8d5796d2
LB
1449 default VMSPLIT_3G
1450 help
1451 Select the desired split between kernel and user memory.
1452
1453 If you are not absolutely sure what you are doing, leave this
1454 option alone!
1455
1456 config VMSPLIT_3G
1457 bool "3G/1G user/kernel split"
1458 config VMSPLIT_2G
1459 bool "2G/2G user/kernel split"
1460 config VMSPLIT_1G
1461 bool "1G/3G user/kernel split"
1462endchoice
1463
1464config PAGE_OFFSET
1465 hex
006fa259 1466 default PHYS_OFFSET if !MMU
8d5796d2
LB
1467 default 0x40000000 if VMSPLIT_1G
1468 default 0x80000000 if VMSPLIT_2G
1469 default 0xC0000000
1470
1da177e4
LT
1471config NR_CPUS
1472 int "Maximum number of CPUs (2-32)"
1473 range 2 32
1474 depends on SMP
1475 default "4"
1476
a054a811 1477config HOTPLUG_CPU
00b7dede 1478 bool "Support for hot-pluggable CPUs"
40b31360 1479 depends on SMP
a054a811
RK
1480 help
1481 Say Y here to experiment with turning CPUs off and on. CPUs
1482 can be controlled through /sys/devices/system/cpu.
1483
2bdd424f
WD
1484config ARM_PSCI
1485 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1486 depends on CPU_V7
1487 help
1488 Say Y here if you want Linux to communicate with system firmware
1489 implementing the PSCI specification for CPU-centric power
1490 management operations described in ARM document number ARM DEN
1491 0022A ("Power State Coordination Interface System Software on
1492 ARM processors").
1493
2a6ad871
MR
1494# The GPIO number here must be sorted by descending number. In case of
1495# a multiplatform kernel, we just want the highest value required by the
1496# selected platforms.
44986ab0
PDSN
1497config ARCH_NR_GPIO
1498 int
6a4d8f36 1499 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
aa42587a
TF
1500 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1501 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
eb171a99 1502 default 416 if ARCH_SUNXI
06b851e5 1503 default 392 if ARCH_U8500
01bb914c 1504 default 352 if ARCH_VT8500
7b5da4c3 1505 default 288 if ARCH_ROCKCHIP
2a6ad871 1506 default 264 if MACH_H4700
44986ab0
PDSN
1507 default 0
1508 help
1509 Maximum number of GPIOs in the system.
1510
1511 If unsure, leave the default value.
1512
d45a398f 1513source kernel/Kconfig.preempt
1da177e4 1514
c9218b16 1515config HZ_FIXED
f8065813 1516 int
070b8b43 1517 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
a73ddc61 1518 ARCH_S5PV210 || ARCH_EXYNOS4
5248c657 1519 default AT91_TIMER_HZ if ARCH_AT91
bf98c1ea 1520 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
47d84682 1521 default 0
c9218b16
RK
1522
1523choice
47d84682 1524 depends on HZ_FIXED = 0
c9218b16
RK
1525 prompt "Timer frequency"
1526
1527config HZ_100
1528 bool "100 Hz"
1529
1530config HZ_200
1531 bool "200 Hz"
1532
1533config HZ_250
1534 bool "250 Hz"
1535
1536config HZ_300
1537 bool "300 Hz"
1538
1539config HZ_500
1540 bool "500 Hz"
1541
1542config HZ_1000
1543 bool "1000 Hz"
1544
1545endchoice
1546
1547config HZ
1548 int
47d84682 1549 default HZ_FIXED if HZ_FIXED != 0
c9218b16
RK
1550 default 100 if HZ_100
1551 default 200 if HZ_200
1552 default 250 if HZ_250
1553 default 300 if HZ_300
1554 default 500 if HZ_500
1555 default 1000
1556
1557config SCHED_HRTICK
1558 def_bool HIGH_RES_TIMERS
f8065813 1559
16c79651 1560config THUMB2_KERNEL
bc7dea00 1561 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
4477ca45 1562 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
bc7dea00 1563 default y if CPU_THUMBONLY
16c79651
CM
1564 select AEABI
1565 select ARM_ASM_UNIFIED
89bace65 1566 select ARM_UNWIND
16c79651
CM
1567 help
1568 By enabling this option, the kernel will be compiled in
1569 Thumb-2 mode. A compiler/assembler that understand the unified
1570 ARM-Thumb syntax is needed.
1571
1572 If unsure, say N.
1573
6f685c5c
DM
1574config THUMB2_AVOID_R_ARM_THM_JUMP11
1575 bool "Work around buggy Thumb-2 short branch relocations in gas"
1576 depends on THUMB2_KERNEL && MODULES
1577 default y
1578 help
1579 Various binutils versions can resolve Thumb-2 branches to
1580 locally-defined, preemptible global symbols as short-range "b.n"
1581 branch instructions.
1582
1583 This is a problem, because there's no guarantee the final
1584 destination of the symbol, or any candidate locations for a
1585 trampoline, are within range of the branch. For this reason, the
1586 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1587 relocation in modules at all, and it makes little sense to add
1588 support.
1589
1590 The symptom is that the kernel fails with an "unsupported
1591 relocation" error when loading some modules.
1592
1593 Until fixed tools are available, passing
1594 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1595 code which hits this problem, at the cost of a bit of extra runtime
1596 stack usage in some cases.
1597
1598 The problem is described in more detail at:
1599 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1600
1601 Only Thumb-2 kernels are affected.
1602
1603 Unless you are sure your tools don't have this problem, say Y.
1604
0becb088
CM
1605config ARM_ASM_UNIFIED
1606 bool
1607
704bdda0
NP
1608config AEABI
1609 bool "Use the ARM EABI to compile the kernel"
1610 help
1611 This option allows for the kernel to be compiled using the latest
1612 ARM ABI (aka EABI). This is only useful if you are using a user
1613 space environment that is also compiled with EABI.
1614
1615 Since there are major incompatibilities between the legacy ABI and
1616 EABI, especially with regard to structure member alignment, this
1617 option also changes the kernel syscall calling convention to
1618 disambiguate both ABIs and allow for backward compatibility support
1619 (selected with CONFIG_OABI_COMPAT).
1620
1621 To use this you need GCC version 4.0.0 or later.
1622
6c90c872 1623config OABI_COMPAT
a73a3ff1 1624 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
d6f94fa0 1625 depends on AEABI && !THUMB2_KERNEL
6c90c872
NP
1626 help
1627 This option preserves the old syscall interface along with the
1628 new (ARM EABI) one. It also provides a compatibility layer to
1629 intercept syscalls that have structure arguments which layout
1630 in memory differs between the legacy ABI and the new ARM EABI
1631 (only for non "thumb" binaries). This option adds a tiny
1632 overhead to all syscalls and produces a slightly larger kernel.
91702175
KC
1633
1634 The seccomp filter system will not be available when this is
1635 selected, since there is no way yet to sensibly distinguish
1636 between calling conventions during filtering.
1637
6c90c872
NP
1638 If you know you'll be using only pure EABI user space then you
1639 can say N here. If this option is not selected and you attempt
1640 to execute a legacy ABI binary then the result will be
1641 UNPREDICTABLE (in fact it can be predicted that it won't work
b02f8467 1642 at all). If in doubt say N.
6c90c872 1643
eb33575c 1644config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1645 bool
e80d6a24 1646
05944d74
RK
1647config ARCH_SPARSEMEM_ENABLE
1648 bool
1649
07a2f737
RK
1650config ARCH_SPARSEMEM_DEFAULT
1651 def_bool ARCH_SPARSEMEM_ENABLE
1652
05944d74 1653config ARCH_SELECT_MEMORY_MODEL
be370302 1654 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1655
7b7bf499
WD
1656config HAVE_ARCH_PFN_VALID
1657 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1658
b8cd51af
SC
1659config HAVE_GENERIC_RCU_GUP
1660 def_bool y
1661 depends on ARM_LPAE
1662
053a96ca 1663config HIGHMEM
e8db89a2
RK
1664 bool "High Memory Support"
1665 depends on MMU
053a96ca
NP
1666 help
1667 The address space of ARM processors is only 4 Gigabytes large
1668 and it has to accommodate user address space, kernel address
1669 space as well as some memory mapped IO. That means that, if you
1670 have a large amount of physical memory and/or IO, not all of the
1671 memory can be "permanently mapped" by the kernel. The physical
1672 memory that is not permanently mapped is called "high memory".
1673
1674 Depending on the selected kernel/user memory split, minimum
1675 vmalloc space and actual amount of RAM, you may not need this
1676 option which should result in a slightly faster kernel.
1677
1678 If unsure, say n.
1679
65cec8e3
RK
1680config HIGHPTE
1681 bool "Allocate 2nd-level pagetables from highmem"
1682 depends on HIGHMEM
65cec8e3 1683
1b8873a0
JI
1684config HW_PERF_EVENTS
1685 bool "Enable hardware performance counter support for perf events"
f0d1bc47 1686 depends on PERF_EVENTS
1b8873a0
JI
1687 default y
1688 help
1689 Enable hardware performance counter support for perf events. If
1690 disabled, perf events will use software events only.
1691
1355e2a6
CM
1692config SYS_SUPPORTS_HUGETLBFS
1693 def_bool y
1694 depends on ARM_LPAE
1695
8d962507
CM
1696config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1697 def_bool y
1698 depends on ARM_LPAE
1699
4bfab203
SC
1700config ARCH_WANT_GENERAL_HUGETLB
1701 def_bool y
1702
3f22ab27
DH
1703source "mm/Kconfig"
1704
c1b2d970 1705config FORCE_MAX_ZONEORDER
bf98c1ea
LP
1706 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1707 range 11 64 if ARCH_SHMOBILE_LEGACY
898f08e1 1708 default "12" if SOC_AM33XX
6d85e2b0 1709 default "9" if SA1111 || ARCH_EFM32
c1b2d970
MD
1710 default "11"
1711 help
1712 The kernel memory allocator divides physically contiguous memory
1713 blocks into "zones", where each zone is a power of two number of
1714 pages. This option selects the largest power of two that the kernel
1715 keeps in the memory allocator. If you need to allocate very large
1716 blocks of physically contiguous memory, then you may need to
1717 increase this value.
1718
1719 This config option is actually maximum order plus one. For example,
1720 a value of 11 means that the largest free memory block is 2^10 pages.
1721
1da177e4
LT
1722config ALIGNMENT_TRAP
1723 bool
f12d0d7c 1724 depends on CPU_CP15_MMU
1da177e4 1725 default y if !ARCH_EBSA110
e119bfff 1726 select HAVE_PROC_CPU if PROC_FS
1da177e4 1727 help
84eb8d06 1728 ARM processors cannot fetch/store information which is not
1da177e4
LT
1729 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1730 address divisible by 4. On 32-bit ARM processors, these non-aligned
1731 fetch/store instructions will be emulated in software if you say
1732 here, which has a severe performance impact. This is necessary for
1733 correct operation of some network protocols. With an IP-only
1734 configuration it is safe to say N, otherwise say Y.
1735
39ec58f3 1736config UACCESS_WITH_MEMCPY
38ef2ad5
LW
1737 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1738 depends on MMU
39ec58f3
LB
1739 default y if CPU_FEROCEON
1740 help
1741 Implement faster copy_to_user and clear_user methods for CPU
1742 cores where a 8-word STM instruction give significantly higher
1743 memory write throughput than a sequence of individual 32bit stores.
1744
1745 A possible side effect is a slight increase in scheduling latency
1746 between threads sharing the same address space if they invoke
1747 such copy operations with large buffers.
1748
1749 However, if the CPU data cache is using a write-allocate mode,
1750 this option is unlikely to provide any performance gain.
1751
70c70d97
NP
1752config SECCOMP
1753 bool
1754 prompt "Enable seccomp to safely compute untrusted bytecode"
1755 ---help---
1756 This kernel feature is useful for number crunching applications
1757 that may need to compute untrusted bytecode during their
1758 execution. By using pipes or other transports made available to
1759 the process as file descriptors supporting the read/write
1760 syscalls, it's possible to isolate those applications in
1761 their own address space using seccomp. Once seccomp is
1762 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1763 and the task is only allowed to execute a few safe syscalls
1764 defined by each seccomp mode.
1765
06e6295b
SS
1766config SWIOTLB
1767 def_bool y
1768
1769config IOMMU_HELPER
1770 def_bool SWIOTLB
1771
eff8d644
SS
1772config XEN_DOM0
1773 def_bool y
1774 depends on XEN
1775
1776config XEN
c2ba1f7d 1777 bool "Xen guest support on ARM"
85323a99 1778 depends on ARM && AEABI && OF
f880b67d 1779 depends on CPU_V7 && !CPU_V6
85323a99 1780 depends on !GENERIC_ATOMIC64
7693decc 1781 depends on MMU
51aaf81f 1782 select ARCH_DMA_ADDR_T_64BIT
17b7ab80 1783 select ARM_PSCI
83862ccf 1784 select SWIOTLB_XEN
eff8d644
SS
1785 help
1786 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1787
1da177e4
LT
1788endmenu
1789
1790menu "Boot options"
1791
9eb8f674
GL
1792config USE_OF
1793 bool "Flattened Device Tree support"
b1b3f49c 1794 select IRQ_DOMAIN
9eb8f674
GL
1795 select OF
1796 select OF_EARLY_FLATTREE
bcedb5f9 1797 select OF_RESERVED_MEM
9eb8f674
GL
1798 help
1799 Include support for flattened device tree machine descriptions.
1800
bd51e2f5
NP
1801config ATAGS
1802 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1803 default y
1804 help
1805 This is the traditional way of passing data to the kernel at boot
1806 time. If you are solely relying on the flattened device tree (or
1807 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1808 to remove ATAGS support from your kernel binary. If unsure,
1809 leave this to y.
1810
1811config DEPRECATED_PARAM_STRUCT
1812 bool "Provide old way to pass kernel parameters"
1813 depends on ATAGS
1814 help
1815 This was deprecated in 2001 and announced to live on for 5 years.
1816 Some old boot loaders still use this way.
1817
1da177e4
LT
1818# Compressed boot loader in ROM. Yes, we really want to ask about
1819# TEXT and BSS so we preserve their values in the config files.
1820config ZBOOT_ROM_TEXT
1821 hex "Compressed ROM boot loader base address"
1822 default "0"
1823 help
1824 The physical address at which the ROM-able zImage is to be
1825 placed in the target. Platforms which normally make use of
1826 ROM-able zImage formats normally set this to a suitable
1827 value in their defconfig file.
1828
1829 If ZBOOT_ROM is not enabled, this has no effect.
1830
1831config ZBOOT_ROM_BSS
1832 hex "Compressed ROM boot loader BSS address"
1833 default "0"
1834 help
f8c440b2
DF
1835 The base address of an area of read/write memory in the target
1836 for the ROM-able zImage which must be available while the
1837 decompressor is running. It must be large enough to hold the
1838 entire decompressed kernel plus an additional 128 KiB.
1839 Platforms which normally make use of ROM-able zImage formats
1840 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1841
1842 If ZBOOT_ROM is not enabled, this has no effect.
1843
1844config ZBOOT_ROM
1845 bool "Compressed boot loader in ROM/flash"
1846 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
10968131 1847 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
1da177e4
LT
1848 help
1849 Say Y here if you intend to execute your compressed kernel image
1850 (zImage) directly from ROM or flash. If unsure, say N.
1851
090ab3ff
SH
1852choice
1853 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
d6f94fa0 1854 depends on ZBOOT_ROM && ARCH_SH7372
090ab3ff
SH
1855 default ZBOOT_ROM_NONE
1856 help
1857 Include experimental SD/MMC loading code in the ROM-able zImage.
59bf8964 1858 With this enabled it is possible to write the ROM-able zImage
090ab3ff
SH
1859 kernel image to an MMC or SD card and boot the kernel straight
1860 from the reset vector. At reset the processor Mask ROM will load
59bf8964 1861 the first part of the ROM-able zImage which in turn loads the
090ab3ff
SH
1862 rest the kernel image to RAM.
1863
1864config ZBOOT_ROM_NONE
1865 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1866 help
1867 Do not load image from SD or MMC
1868
f45b1149
SH
1869config ZBOOT_ROM_MMCIF
1870 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1871 help
090ab3ff
SH
1872 Load image from MMCIF hardware block.
1873
1874config ZBOOT_ROM_SH_MOBILE_SDHI
1875 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1876 help
1877 Load image from SDHI hardware block
1878
1879endchoice
f45b1149 1880
e2a6a3aa
JB
1881config ARM_APPENDED_DTB
1882 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
10968131 1883 depends on OF
e2a6a3aa
JB
1884 help
1885 With this option, the boot code will look for a device tree binary
1886 (DTB) appended to zImage
1887 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1888
1889 This is meant as a backward compatibility convenience for those
1890 systems with a bootloader that can't be upgraded to accommodate
1891 the documented boot protocol using a device tree.
1892
1893 Beware that there is very little in terms of protection against
1894 this option being confused by leftover garbage in memory that might
1895 look like a DTB header after a reboot if no actual DTB is appended
1896 to zImage. Do not leave this option active in a production kernel
1897 if you don't intend to always append a DTB. Proper passing of the
1898 location into r2 of a bootloader provided DTB is always preferable
1899 to this option.
1900
b90b9a38
NP
1901config ARM_ATAG_DTB_COMPAT
1902 bool "Supplement the appended DTB with traditional ATAG information"
1903 depends on ARM_APPENDED_DTB
1904 help
1905 Some old bootloaders can't be updated to a DTB capable one, yet
1906 they provide ATAGs with memory configuration, the ramdisk address,
1907 the kernel cmdline string, etc. Such information is dynamically
1908 provided by the bootloader and can't always be stored in a static
1909 DTB. To allow a device tree enabled kernel to be used with such
1910 bootloaders, this option allows zImage to extract the information
1911 from the ATAG list and store it at run time into the appended DTB.
1912
d0f34a11
GR
1913choice
1914 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1915 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1916
1917config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1918 bool "Use bootloader kernel arguments if available"
1919 help
1920 Uses the command-line options passed by the boot loader instead of
1921 the device tree bootargs property. If the boot loader doesn't provide
1922 any, the device tree bootargs property will be used.
1923
1924config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1925 bool "Extend with bootloader kernel arguments"
1926 help
1927 The command-line arguments provided by the boot loader will be
1928 appended to the the device tree bootargs property.
1929
1930endchoice
1931
1da177e4
LT
1932config CMDLINE
1933 string "Default kernel command string"
1934 default ""
1935 help
1936 On some architectures (EBSA110 and CATS), there is currently no way
1937 for the boot loader to pass arguments to the kernel. For these
1938 architectures, you should supply some command-line options at build
1939 time by entering them here. As a minimum, you should specify the
1940 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1941
4394c124
VB
1942choice
1943 prompt "Kernel command line type" if CMDLINE != ""
1944 default CMDLINE_FROM_BOOTLOADER
bd51e2f5 1945 depends on ATAGS
4394c124
VB
1946
1947config CMDLINE_FROM_BOOTLOADER
1948 bool "Use bootloader kernel arguments if available"
1949 help
1950 Uses the command-line options passed by the boot loader. If
1951 the boot loader doesn't provide any, the default kernel command
1952 string provided in CMDLINE will be used.
1953
1954config CMDLINE_EXTEND
1955 bool "Extend bootloader kernel arguments"
1956 help
1957 The command-line arguments provided by the boot loader will be
1958 appended to the default kernel command string.
1959
92d2040d
AH
1960config CMDLINE_FORCE
1961 bool "Always use the default kernel command string"
92d2040d
AH
1962 help
1963 Always use the default kernel command string, even if the boot
1964 loader passes other arguments to the kernel.
1965 This is useful if you cannot or don't want to change the
1966 command-line options your boot loader passes to the kernel.
4394c124 1967endchoice
92d2040d 1968
1da177e4
LT
1969config XIP_KERNEL
1970 bool "Kernel Execute-In-Place from ROM"
10968131 1971 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
1da177e4
LT
1972 help
1973 Execute-In-Place allows the kernel to run from non-volatile storage
1974 directly addressable by the CPU, such as NOR flash. This saves RAM
1975 space since the text section of the kernel is not loaded from flash
1976 to RAM. Read-write sections, such as the data section and stack,
1977 are still copied to RAM. The XIP kernel is not compressed since
1978 it has to run directly from flash, so it will take more space to
1979 store it. The flash address used to link the kernel object files,
1980 and for storing it, is configuration dependent. Therefore, if you
1981 say Y here, you must know the proper physical address where to
1982 store the kernel image depending on your own flash memory usage.
1983
1984 Also note that the make target becomes "make xipImage" rather than
1985 "make zImage" or "make Image". The final kernel binary to put in
1986 ROM memory will be arch/arm/boot/xipImage.
1987
1988 If unsure, say N.
1989
1990config XIP_PHYS_ADDR
1991 hex "XIP Kernel Physical Location"
1992 depends on XIP_KERNEL
1993 default "0x00080000"
1994 help
1995 This is the physical address in your flash memory the kernel will
1996 be linked for and stored to. This address is dependent on your
1997 own flash usage.
1998
c587e4a6
RP
1999config KEXEC
2000 bool "Kexec system call (EXPERIMENTAL)"
19ab428f 2001 depends on (!SMP || PM_SLEEP_SMP)
c587e4a6
RP
2002 help
2003 kexec is a system call that implements the ability to shutdown your
2004 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 2005 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
2006 you can start any kernel with it, not just Linux.
2007
2008 It is an ongoing process to be certain the hardware in a machine
2009 is properly shutdown, so do not be surprised if this code does not
bf220695 2010 initially work for you.
c587e4a6 2011
4cd9d6f7
RP
2012config ATAGS_PROC
2013 bool "Export atags in procfs"
bd51e2f5 2014 depends on ATAGS && KEXEC
b98d7291 2015 default y
4cd9d6f7
RP
2016 help
2017 Should the atags used to boot the kernel be exported in an "atags"
2018 file in procfs. Useful with kexec.
2019
cb5d39b3
MW
2020config CRASH_DUMP
2021 bool "Build kdump crash kernel (EXPERIMENTAL)"
cb5d39b3
MW
2022 help
2023 Generate crash dump after being started by kexec. This should
2024 be normally only set in special crash dump kernels which are
2025 loaded in the main kernel with kexec-tools into a specially
2026 reserved region and then later executed after a crash by
2027 kdump/kexec. The crash dump kernel must be compiled to a
2028 memory address not used by the main kernel
2029
2030 For more details see Documentation/kdump/kdump.txt
2031
e69edc79
EM
2032config AUTO_ZRELADDR
2033 bool "Auto calculation of the decompressed kernel image address"
e69edc79
EM
2034 help
2035 ZRELADDR is the physical address where the decompressed kernel
2036 image will be placed. If AUTO_ZRELADDR is selected, the address
2037 will be determined at run-time by masking the current IP with
2038 0xf8000000. This assumes the zImage being placed in the first 128MB
2039 from start of memory.
2040
1da177e4
LT
2041endmenu
2042
ac9d7efc 2043menu "CPU Power Management"
1da177e4 2044
1da177e4 2045source "drivers/cpufreq/Kconfig"
1da177e4 2046
ac9d7efc
RK
2047source "drivers/cpuidle/Kconfig"
2048
2049endmenu
2050
1da177e4
LT
2051menu "Floating point emulation"
2052
2053comment "At least one emulation must be selected"
2054
2055config FPE_NWFPE
2056 bool "NWFPE math emulation"
593c252a 2057 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2058 ---help---
2059 Say Y to include the NWFPE floating point emulator in the kernel.
2060 This is necessary to run most binaries. Linux does not currently
2061 support floating point hardware so you need to say Y here even if
2062 your machine has an FPA or floating point co-processor podule.
2063
2064 You may say N here if you are going to load the Acorn FPEmulator
2065 early in the bootup.
2066
2067config FPE_NWFPE_XP
2068 bool "Support extended precision"
bedf142b 2069 depends on FPE_NWFPE
1da177e4
LT
2070 help
2071 Say Y to include 80-bit support in the kernel floating-point
2072 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2073 Note that gcc does not generate 80-bit operations by default,
2074 so in most cases this option only enlarges the size of the
2075 floating point emulator without any good reason.
2076
2077 You almost surely want to say N here.
2078
2079config FPE_FASTFPE
2080 bool "FastFPE math emulation (EXPERIMENTAL)"
d6f94fa0 2081 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
1da177e4
LT
2082 ---help---
2083 Say Y here to include the FAST floating point emulator in the kernel.
2084 This is an experimental much faster emulator which now also has full
2085 precision for the mantissa. It does not support any exceptions.
2086 It is very simple, and approximately 3-6 times faster than NWFPE.
2087
2088 It should be sufficient for most programs. It may be not suitable
2089 for scientific calculations, but you have to check this for yourself.
2090 If you do not feel you need a faster FP emulation you should better
2091 choose NWFPE.
2092
2093config VFP
2094 bool "VFP-format floating point maths"
e399b1a4 2095 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2096 help
2097 Say Y to include VFP support code in the kernel. This is needed
2098 if your hardware includes a VFP unit.
2099
2100 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2101 release notes and additional status information.
2102
2103 Say N if your target does not have VFP hardware.
2104
25ebee02
CM
2105config VFPv3
2106 bool
2107 depends on VFP
2108 default y if CPU_V7
2109
b5872db4
CM
2110config NEON
2111 bool "Advanced SIMD (NEON) Extension support"
2112 depends on VFPv3 && CPU_V7
2113 help
2114 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2115 Extension.
2116
73c132c1
AB
2117config KERNEL_MODE_NEON
2118 bool "Support for NEON in kernel mode"
c4a30c3b 2119 depends on NEON && AEABI
73c132c1
AB
2120 help
2121 Say Y to include support for NEON in kernel mode.
2122
1da177e4
LT
2123endmenu
2124
2125menu "Userspace binary formats"
2126
2127source "fs/Kconfig.binfmt"
2128
2129config ARTHUR
2130 tristate "RISC OS personality"
704bdda0 2131 depends on !AEABI
1da177e4
LT
2132 help
2133 Say Y here to include the kernel code necessary if you want to run
2134 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2135 experimental; if this sounds frightening, say N and sleep in peace.
2136 You can also say M here to compile this support as a module (which
2137 will be called arthur).
2138
2139endmenu
2140
2141menu "Power management options"
2142
eceab4ac 2143source "kernel/power/Kconfig"
1da177e4 2144
f4cb5700 2145config ARCH_SUSPEND_POSSIBLE
19a0519d 2146 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
f0d75153 2147 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
f4cb5700
JB
2148 def_bool y
2149
15e0d9e3
AB
2150config ARM_CPU_SUSPEND
2151 def_bool PM_SLEEP
2152
603fb42a
SC
2153config ARCH_HIBERNATION_POSSIBLE
2154 bool
2155 depends on MMU
2156 default y if ARCH_SUSPEND_POSSIBLE
2157
1da177e4
LT
2158endmenu
2159
d5950b43
SR
2160source "net/Kconfig"
2161
ac25150f 2162source "drivers/Kconfig"
1da177e4
LT
2163
2164source "fs/Kconfig"
2165
1da177e4
LT
2166source "arch/arm/Kconfig.debug"
2167
2168source "security/Kconfig"
2169
2170source "crypto/Kconfig"
2171
2172source "lib/Kconfig"
749cf76c
CD
2173
2174source "arch/arm/kvm/Kconfig"
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