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