mm: expose arch_mmap_rnd when available
[linux-2.6-block.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
2b68f6ca 6 select ARCH_HAS_ELF_RANDOMIZE
3d06770e 7 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
171b3f0d 8 select ARCH_HAVE_CUSTOM_GPIO_H
957e3fac 9 select ARCH_HAS_GCOV_PROFILE_ALL
d7018848 10 select ARCH_MIGHT_HAVE_PC_PARPORT
4badad35 11 select ARCH_SUPPORTS_ATOMIC_RMW
017f161a 12 select ARCH_USE_BUILTIN_BSWAP
0cbad9c9 13 select ARCH_USE_CMPXCHG_LOCKREF
b1b3f49c 14 select ARCH_WANT_IPC_PARSE_VERSION
ee951c63 15 select BUILDTIME_EXTABLE_SORT if MMU
171b3f0d 16 select CLONE_BACKWARDS
b1b3f49c 17 select CPU_PM if (SUSPEND || CPU_IDLE)
dce5c9e3 18 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
36d0fd21 19 select GENERIC_ALLOCATOR
4477ca45 20 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
b1b3f49c 21 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
171b3f0d 22 select GENERIC_IDLE_POLL_SETUP
b1b3f49c
RK
23 select GENERIC_IRQ_PROBE
24 select GENERIC_IRQ_SHOW
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
1bcad26e
KS
290config PGTABLE_LEVELS
291 int
292 default 3 if ARM_LPAE
293 default 2
294
1da177e4
LT
295source "init/Kconfig"
296
dc52ddc0
MH
297source "kernel/Kconfig.freezer"
298
1da177e4
LT
299menu "System Type"
300
3c427975
HC
301config MMU
302 bool "MMU-based Paged Memory Management Support"
303 default y
304 help
305 Select if you want MMU-based virtualised addressing space
306 support by paged memory management. If unsure, say 'Y'.
307
ccf50e23
RK
308#
309# The "ARM system type" choice list is ordered alphabetically by option
310# text. Please add new entries in the option alphabetic order.
311#
1da177e4
LT
312choice
313 prompt "ARM system type"
1420b22b
AB
314 default ARCH_VERSATILE if !MMU
315 default ARCH_MULTIPLATFORM if MMU
1da177e4 316
387798b3
RH
317config ARCH_MULTIPLATFORM
318 bool "Allow multiple platforms to be selected"
b1b3f49c 319 depends on MMU
ddb902cc 320 select ARCH_WANT_OPTIONAL_GPIOLIB
42dc836d 321 select ARM_HAS_SG_CHAIN
387798b3
RH
322 select ARM_PATCH_PHYS_VIRT
323 select AUTO_ZRELADDR
6d0add40 324 select CLKSRC_OF
66314223 325 select COMMON_CLK
ddb902cc 326 select GENERIC_CLOCKEVENTS
08d38beb 327 select MIGHT_HAVE_PCI
387798b3 328 select MULTI_IRQ_HANDLER
66314223
DN
329 select SPARSE_IRQ
330 select USE_OF
66314223 331
4af6fee1
DS
332config ARCH_REALVIEW
333 bool "ARM Ltd. RealView family"
b1b3f49c 334 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 335 select ARM_AMBA
b1b3f49c 336 select ARM_TIMER_SP804
f9a6aa43
LW
337 select COMMON_CLK
338 select COMMON_CLK_VERSATILE
ae30ceac 339 select GENERIC_CLOCKEVENTS
b56ba8aa 340 select GPIO_PL061 if GPIOLIB
b1b3f49c 341 select ICST
0cdc8b92 342 select NEED_MACH_MEMORY_H
b1b3f49c 343 select PLAT_VERSATILE
81cc3f86 344 select PLAT_VERSATILE_SCHED_CLOCK
4af6fee1
DS
345 help
346 This enables support for ARM Ltd RealView boards.
347
348config ARCH_VERSATILE
349 bool "ARM Ltd. Versatile family"
b1b3f49c 350 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 351 select ARM_AMBA
b1b3f49c 352 select ARM_TIMER_SP804
4af6fee1 353 select ARM_VIC
6d803ba7 354 select CLKDEV_LOOKUP
b1b3f49c 355 select GENERIC_CLOCKEVENTS
aa3831cf 356 select HAVE_MACH_CLKDEV
c5a0adb5 357 select ICST
f4b8b319 358 select PLAT_VERSATILE
b1b3f49c 359 select PLAT_VERSATILE_CLOCK
81cc3f86 360 select PLAT_VERSATILE_SCHED_CLOCK
2389d501 361 select VERSATILE_FPGA_IRQ
4af6fee1
DS
362 help
363 This enables support for ARM Ltd Versatile board.
364
8fc5ffa0
AV
365config ARCH_AT91
366 bool "Atmel AT91"
f373e8c0 367 select ARCH_REQUIRE_GPIOLIB
bd602995 368 select CLKDEV_LOOKUP
e261501d 369 select IRQ_DOMAIN
1ac02d79 370 select NEED_MACH_IO_H if PCCARD
6732ae5c 371 select PINCTRL
d48346c1
NF
372 select PINCTRL_AT91
373 select USE_OF
4af6fee1 374 help
929e994f 375 This enables support for systems based on Atmel
32963a8e 376 AT91RM9200, AT91SAM9 and SAMA5 processors.
4af6fee1 377
93e22567
RK
378config ARCH_CLPS711X
379 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
a3b8d4a5 380 select ARCH_REQUIRE_GPIOLIB
ea7d1bc9 381 select AUTO_ZRELADDR
c99f72ad 382 select CLKSRC_MMIO
93e22567
RK
383 select COMMON_CLK
384 select CPU_ARM720T
4a8355c4 385 select GENERIC_CLOCKEVENTS
6597619f 386 select MFD_SYSCON
e4e3a37d 387 select SOC_BUS
93e22567
RK
388 help
389 Support for Cirrus Logic 711x/721x/731x based boards.
390
788c9700
RK
391config ARCH_GEMINI
392 bool "Cortina Systems Gemini"
788c9700 393 select ARCH_REQUIRE_GPIOLIB
f3372c01 394 select CLKSRC_MMIO
b1b3f49c 395 select CPU_FA526
f3372c01 396 select GENERIC_CLOCKEVENTS
788c9700
RK
397 help
398 Support for the Cortina Systems Gemini family SoCs
399
1da177e4
LT
400config ARCH_EBSA110
401 bool "EBSA-110"
b1b3f49c 402 select ARCH_USES_GETTIMEOFFSET
c750815e 403 select CPU_SA110
f7e68bbf 404 select ISA
c334bc15 405 select NEED_MACH_IO_H
0cdc8b92 406 select NEED_MACH_MEMORY_H
ce816fa8 407 select NO_IOPORT_MAP
1da177e4
LT
408 help
409 This is an evaluation board for the StrongARM processor available
f6c8965a 410 from Digital. It has limited hardware on-board, including an
1da177e4
LT
411 Ethernet interface, two PCMCIA sockets, two serial ports and a
412 parallel port.
413
6d85e2b0
UKK
414config ARCH_EFM32
415 bool "Energy Micro efm32"
416 depends on !MMU
417 select ARCH_REQUIRE_GPIOLIB
418 select ARM_NVIC
51aaf81f 419 select AUTO_ZRELADDR
6d85e2b0
UKK
420 select CLKSRC_OF
421 select COMMON_CLK
422 select CPU_V7M
423 select GENERIC_CLOCKEVENTS
424 select NO_DMA
ce816fa8 425 select NO_IOPORT_MAP
6d85e2b0
UKK
426 select SPARSE_IRQ
427 select USE_OF
428 help
429 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
430 processors.
431
e7736d47
LB
432config ARCH_EP93XX
433 bool "EP93xx-based"
b1b3f49c
RK
434 select ARCH_HAS_HOLES_MEMORYMODEL
435 select ARCH_REQUIRE_GPIOLIB
436 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
437 select ARM_AMBA
438 select ARM_VIC
6d803ba7 439 select CLKDEV_LOOKUP
b1b3f49c 440 select CPU_ARM920T
e7736d47
LB
441 help
442 This enables support for the Cirrus EP93xx series of CPUs.
443
1da177e4
LT
444config ARCH_FOOTBRIDGE
445 bool "FootBridge"
c750815e 446 select CPU_SA110
1da177e4 447 select FOOTBRIDGE
4e8d7637 448 select GENERIC_CLOCKEVENTS
d0ee9f40 449 select HAVE_IDE
8ef6e620 450 select NEED_MACH_IO_H if !MMU
0cdc8b92 451 select NEED_MACH_MEMORY_H
f999b8bd
MM
452 help
453 Support for systems based on the DC21285 companion chip
454 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 455
4af6fee1
DS
456config ARCH_NETX
457 bool "Hilscher NetX based"
b1b3f49c 458 select ARM_VIC
234b6ced 459 select CLKSRC_MMIO
c750815e 460 select CPU_ARM926T
2fcfe6b8 461 select GENERIC_CLOCKEVENTS
f999b8bd 462 help
4af6fee1
DS
463 This enables support for systems based on the Hilscher NetX Soc
464
3b938be6
RK
465config ARCH_IOP13XX
466 bool "IOP13xx-based"
467 depends on MMU
b1b3f49c 468 select CPU_XSC3
0cdc8b92 469 select NEED_MACH_MEMORY_H
13a5045d 470 select NEED_RET_TO_USER
b1b3f49c
RK
471 select PCI
472 select PLAT_IOP
473 select VMSPLIT_1G
37ebbcff 474 select SPARSE_IRQ
3b938be6
RK
475 help
476 Support for Intel's IOP13XX (XScale) family of processors.
477
3f7e5815
LB
478config ARCH_IOP32X
479 bool "IOP32x-based"
a4f7e763 480 depends on MMU
b1b3f49c 481 select ARCH_REQUIRE_GPIOLIB
c750815e 482 select CPU_XSCALE
e9004f50 483 select GPIO_IOP
13a5045d 484 select NEED_RET_TO_USER
f7e68bbf 485 select PCI
b1b3f49c 486 select PLAT_IOP
f999b8bd 487 help
3f7e5815
LB
488 Support for Intel's 80219 and IOP32X (XScale) family of
489 processors.
490
491config ARCH_IOP33X
492 bool "IOP33x-based"
493 depends on MMU
b1b3f49c 494 select ARCH_REQUIRE_GPIOLIB
c750815e 495 select CPU_XSCALE
e9004f50 496 select GPIO_IOP
13a5045d 497 select NEED_RET_TO_USER
3f7e5815 498 select PCI
b1b3f49c 499 select PLAT_IOP
3f7e5815
LB
500 help
501 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 502
3b938be6
RK
503config ARCH_IXP4XX
504 bool "IXP4xx-based"
a4f7e763 505 depends on MMU
58af4a24 506 select ARCH_HAS_DMA_SET_COHERENT_MASK
b1b3f49c 507 select ARCH_REQUIRE_GPIOLIB
51aaf81f 508 select ARCH_SUPPORTS_BIG_ENDIAN
234b6ced 509 select CLKSRC_MMIO
c750815e 510 select CPU_XSCALE
b1b3f49c 511 select DMABOUNCE if PCI
3b938be6 512 select GENERIC_CLOCKEVENTS
0b05da72 513 select MIGHT_HAVE_PCI
c334bc15 514 select NEED_MACH_IO_H
9296d94d 515 select USB_EHCI_BIG_ENDIAN_DESC
171b3f0d 516 select USB_EHCI_BIG_ENDIAN_MMIO
c4713074 517 help
3b938be6 518 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 519
edabd38e
SB
520config ARCH_DOVE
521 bool "Marvell Dove"
edabd38e 522 select ARCH_REQUIRE_GPIOLIB
756b2531 523 select CPU_PJ4
edabd38e 524 select GENERIC_CLOCKEVENTS
0f81bd43 525 select MIGHT_HAVE_PCI
171b3f0d 526 select MVEBU_MBUS
9139acd1
SH
527 select PINCTRL
528 select PINCTRL_DOVE
abcda1dc 529 select PLAT_ORION_LEGACY
edabd38e
SB
530 help
531 Support for the Marvell Dove SoC 88AP510
532
794d15b2
SS
533config ARCH_MV78XX0
534 bool "Marvell MV78xx0"
a8865655 535 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 536 select CPU_FEROCEON
794d15b2 537 select GENERIC_CLOCKEVENTS
171b3f0d 538 select MVEBU_MBUS
b1b3f49c 539 select PCI
abcda1dc 540 select PLAT_ORION_LEGACY
794d15b2
SS
541 help
542 Support for the following Marvell MV78xx0 series SoCs:
543 MV781x0, MV782x0.
544
9dd0b194 545config ARCH_ORION5X
585cf175
TP
546 bool "Marvell Orion"
547 depends on MMU
a8865655 548 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 549 select CPU_FEROCEON
51cbff1d 550 select GENERIC_CLOCKEVENTS
171b3f0d 551 select MVEBU_MBUS
b1b3f49c 552 select PCI
abcda1dc 553 select PLAT_ORION_LEGACY
585cf175 554 help
9dd0b194 555 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 556 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 557 Orion-2 (5281), Orion-1-90 (6183).
585cf175 558
788c9700 559config ARCH_MMP
2f7e8fae 560 bool "Marvell PXA168/910/MMP2"
788c9700 561 depends on MMU
788c9700 562 select ARCH_REQUIRE_GPIOLIB
6d803ba7 563 select CLKDEV_LOOKUP
b1b3f49c 564 select GENERIC_ALLOCATOR
788c9700 565 select GENERIC_CLOCKEVENTS
157d2644 566 select GPIO_PXA
c24b3114 567 select IRQ_DOMAIN
0f374561 568 select MULTI_IRQ_HANDLER
7c8f86a4 569 select PINCTRL
788c9700 570 select PLAT_PXA
0bd86961 571 select SPARSE_IRQ
788c9700 572 help
2f7e8fae 573 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
574
575config ARCH_KS8695
576 bool "Micrel/Kendin KS8695"
98830bc9 577 select ARCH_REQUIRE_GPIOLIB
c7e783d6 578 select CLKSRC_MMIO
b1b3f49c 579 select CPU_ARM922T
c7e783d6 580 select GENERIC_CLOCKEVENTS
b1b3f49c 581 select NEED_MACH_MEMORY_H
788c9700
RK
582 help
583 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
584 System-on-Chip devices.
585
788c9700
RK
586config ARCH_W90X900
587 bool "Nuvoton W90X900 CPU"
c52d3d68 588 select ARCH_REQUIRE_GPIOLIB
6d803ba7 589 select CLKDEV_LOOKUP
6fa5d5f7 590 select CLKSRC_MMIO
b1b3f49c 591 select CPU_ARM926T
58b5369e 592 select GENERIC_CLOCKEVENTS
788c9700 593 help
a8bc4ead 594 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
595 At present, the w90x900 has been renamed nuc900, regarding
596 the ARM series product line, you can login the following
597 link address to know more.
598
599 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
600 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 601
93e22567
RK
602config ARCH_LPC32XX
603 bool "NXP LPC32XX"
604 select ARCH_REQUIRE_GPIOLIB
605 select ARM_AMBA
606 select CLKDEV_LOOKUP
607 select CLKSRC_MMIO
608 select CPU_ARM926T
609 select GENERIC_CLOCKEVENTS
610 select HAVE_IDE
93e22567
RK
611 select USE_OF
612 help
613 Support for the NXP LPC32XX family of processors
614
1da177e4 615config ARCH_PXA
2c8086a5 616 bool "PXA2xx/PXA3xx-based"
a4f7e763 617 depends on MMU
b1b3f49c
RK
618 select ARCH_MTD_XIP
619 select ARCH_REQUIRE_GPIOLIB
620 select ARM_CPU_SUSPEND if PM
621 select AUTO_ZRELADDR
6d803ba7 622 select CLKDEV_LOOKUP
234b6ced 623 select CLKSRC_MMIO
6f6caeaa 624 select CLKSRC_OF
981d0f39 625 select GENERIC_CLOCKEVENTS
157d2644 626 select GPIO_PXA
d0ee9f40 627 select HAVE_IDE
d6cf30ca 628 select IRQ_DOMAIN
b1b3f49c 629 select MULTI_IRQ_HANDLER
b1b3f49c
RK
630 select PLAT_PXA
631 select SPARSE_IRQ
f999b8bd 632 help
2c8086a5 633 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 634
8fc1b0f8
KG
635config ARCH_MSM
636 bool "Qualcomm MSM (non-multiplatform)"
923a081c 637 select ARCH_REQUIRE_GPIOLIB
8cc7f533 638 select COMMON_CLK
b1b3f49c 639 select GENERIC_CLOCKEVENTS
49cbe786 640 help
4b53eb4f
DW
641 Support for Qualcomm MSM/QSD based systems. This runs on the
642 apps processor of the MSM/QSD and depends on a shared memory
643 interface to the modem processor which runs the baseband
644 stack and controls some vital subsystems
645 (clock and power control, etc).
49cbe786 646
bf98c1ea 647config ARCH_SHMOBILE_LEGACY
0d9fd616 648 bool "Renesas ARM SoCs (non-multiplatform)"
bf98c1ea 649 select ARCH_SHMOBILE
91942d17 650 select ARM_PATCH_PHYS_VIRT if MMU
5e93c6b4 651 select CLKDEV_LOOKUP
0ed82bc9 652 select CPU_V7
b1b3f49c 653 select GENERIC_CLOCKEVENTS
4c3ffffd 654 select HAVE_ARM_SCU if SMP
a894fcc2 655 select HAVE_ARM_TWD if SMP
aa3831cf 656 select HAVE_MACH_CLKDEV
3b55658a 657 select HAVE_SMP
ce5ea9f3 658 select MIGHT_HAVE_CACHE_L2X0
60f1435c 659 select MULTI_IRQ_HANDLER
ce816fa8 660 select NO_IOPORT_MAP
2cd3c927 661 select PINCTRL
b1b3f49c 662 select PM_GENERIC_DOMAINS if PM
0cdc23df 663 select SH_CLK_CPG
b1b3f49c 664 select SPARSE_IRQ
c793c1b0 665 help
0d9fd616
LP
666 Support for Renesas ARM SoC platforms using a non-multiplatform
667 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
668 and RZ families.
c793c1b0 669
1da177e4
LT
670config ARCH_RPC
671 bool "RiscPC"
672 select ARCH_ACORN
a08b6b79 673 select ARCH_MAY_HAVE_PC_FDC
07f841b7 674 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 675 select ARCH_USES_GETTIMEOFFSET
fa04e209 676 select CPU_SA110
b1b3f49c 677 select FIQ
d0ee9f40 678 select HAVE_IDE
b1b3f49c
RK
679 select HAVE_PATA_PLATFORM
680 select ISA_DMA_API
c334bc15 681 select NEED_MACH_IO_H
0cdc8b92 682 select NEED_MACH_MEMORY_H
ce816fa8 683 select NO_IOPORT_MAP
b4811bac 684 select VIRT_TO_BUS
1da177e4
LT
685 help
686 On the Acorn Risc-PC, Linux can support the internal IDE disk and
687 CD-ROM interface, serial and parallel port, and the floppy drive.
688
689config ARCH_SA1100
690 bool "SA1100-based"
b1b3f49c
RK
691 select ARCH_MTD_XIP
692 select ARCH_REQUIRE_GPIOLIB
693 select ARCH_SPARSEMEM_ENABLE
694 select CLKDEV_LOOKUP
695 select CLKSRC_MMIO
1937f5b9 696 select CPU_FREQ
b1b3f49c 697 select CPU_SA1100
3e238be2 698 select GENERIC_CLOCKEVENTS
d0ee9f40 699 select HAVE_IDE
1eca42b4 700 select IRQ_DOMAIN
b1b3f49c 701 select ISA
affcab32 702 select MULTI_IRQ_HANDLER
0cdc8b92 703 select NEED_MACH_MEMORY_H
375dec92 704 select SPARSE_IRQ
f999b8bd
MM
705 help
706 Support for StrongARM 11x0 based boards.
1da177e4 707
b130d5c2
KK
708config ARCH_S3C24XX
709 bool "Samsung S3C24XX SoCs"
53650430 710 select ARCH_REQUIRE_GPIOLIB
335cce74 711 select ATAGS
b1b3f49c 712 select CLKDEV_LOOKUP
4280506a 713 select CLKSRC_SAMSUNG_PWM
7f78b6eb 714 select GENERIC_CLOCKEVENTS
880cf071 715 select GPIO_SAMSUNG
20676c15 716 select HAVE_S3C2410_I2C if I2C
b130d5c2 717 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 718 select HAVE_S3C_RTC if RTC_CLASS
17453dd2 719 select MULTI_IRQ_HANDLER
c334bc15 720 select NEED_MACH_IO_H
cd8dc7ae 721 select SAMSUNG_ATAGS
1da177e4 722 help
b130d5c2
KK
723 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
724 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
725 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
726 Samsung SMDK2410 development board (and derivatives).
63b1f51b 727
a08ab637
BD
728config ARCH_S3C64XX
729 bool "Samsung S3C64XX"
b1b3f49c 730 select ARCH_REQUIRE_GPIOLIB
1db0287a 731 select ARM_AMBA
89f0ce72 732 select ARM_VIC
335cce74 733 select ATAGS
b1b3f49c 734 select CLKDEV_LOOKUP
4280506a 735 select CLKSRC_SAMSUNG_PWM
ccecba3c 736 select COMMON_CLK_SAMSUNG
70bacadb 737 select CPU_V6K
04a49b71 738 select GENERIC_CLOCKEVENTS
880cf071 739 select GPIO_SAMSUNG
b1b3f49c
RK
740 select HAVE_S3C2410_I2C if I2C
741 select HAVE_S3C2410_WATCHDOG if WATCHDOG
6700397a 742 select HAVE_TCM
ce816fa8 743 select NO_IOPORT_MAP
b1b3f49c 744 select PLAT_SAMSUNG
4ab75a3f 745 select PM_GENERIC_DOMAINS if PM
b1b3f49c
RK
746 select S3C_DEV_NAND
747 select S3C_GPIO_TRACK
cd8dc7ae 748 select SAMSUNG_ATAGS
6e2d9e93 749 select SAMSUNG_WAKEMASK
88f59738 750 select SAMSUNG_WDT_RESET
a08ab637
BD
751 help
752 Samsung S3C64XX series based systems
753
7c6337e2
KH
754config ARCH_DAVINCI
755 bool "TI DaVinci"
b1b3f49c 756 select ARCH_HAS_HOLES_MEMORYMODEL
dce1115b 757 select ARCH_REQUIRE_GPIOLIB
6d803ba7 758 select CLKDEV_LOOKUP
20e9969b 759 select GENERIC_ALLOCATOR
b1b3f49c 760 select GENERIC_CLOCKEVENTS
dc7ad3b3 761 select GENERIC_IRQ_CHIP
b1b3f49c 762 select HAVE_IDE
3ad7a42d 763 select TI_PRIV_EDMA
689e331f 764 select USE_OF
b1b3f49c 765 select ZONE_DMA
7c6337e2
KH
766 help
767 Support for TI's DaVinci platform.
768
a0694861
TL
769config ARCH_OMAP1
770 bool "TI OMAP1"
00a36698 771 depends on MMU
9af915da 772 select ARCH_HAS_HOLES_MEMORYMODEL
a0694861 773 select ARCH_OMAP
21f47fbc 774 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 775 select CLKDEV_LOOKUP
d6e15d78 776 select CLKSRC_MMIO
b1b3f49c 777 select GENERIC_CLOCKEVENTS
a0694861 778 select GENERIC_IRQ_CHIP
a0694861
TL
779 select HAVE_IDE
780 select IRQ_DOMAIN
781 select NEED_MACH_IO_H if PCCARD
782 select NEED_MACH_MEMORY_H
21f47fbc 783 help
a0694861 784 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
02c981c0 785
1da177e4
LT
786endchoice
787
387798b3
RH
788menu "Multiple platform selection"
789 depends on ARCH_MULTIPLATFORM
790
791comment "CPU Core family selection"
792
f8afae40
AB
793config ARCH_MULTI_V4
794 bool "ARMv4 based platforms (FA526)"
795 depends on !ARCH_MULTI_V6_V7
796 select ARCH_MULTI_V4_V5
797 select CPU_FA526
798
387798b3
RH
799config ARCH_MULTI_V4T
800 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
387798b3 801 depends on !ARCH_MULTI_V6_V7
b1b3f49c 802 select ARCH_MULTI_V4_V5
24e860fb
AB
803 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
804 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
805 CPU_ARM925T || CPU_ARM940T)
387798b3
RH
806
807config ARCH_MULTI_V5
808 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
387798b3 809 depends on !ARCH_MULTI_V6_V7
b1b3f49c 810 select ARCH_MULTI_V4_V5
12567bbd 811 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
24e860fb
AB
812 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
813 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
387798b3
RH
814
815config ARCH_MULTI_V4_V5
816 bool
817
818config ARCH_MULTI_V6
8dda05cc 819 bool "ARMv6 based platforms (ARM11)"
387798b3 820 select ARCH_MULTI_V6_V7
42f4754a 821 select CPU_V6K
387798b3
RH
822
823config ARCH_MULTI_V7
8dda05cc 824 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
387798b3
RH
825 default y
826 select ARCH_MULTI_V6_V7
b1b3f49c 827 select CPU_V7
90bc8ac7 828 select HAVE_SMP
387798b3
RH
829
830config ARCH_MULTI_V6_V7
831 bool
9352b05b 832 select MIGHT_HAVE_CACHE_L2X0
387798b3
RH
833
834config ARCH_MULTI_CPU_AUTO
835 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
836 select ARCH_MULTI_V5
837
838endmenu
839
05e2a3de
RH
840config ARCH_VIRT
841 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
4b8b5f25 842 select ARM_AMBA
05e2a3de 843 select ARM_GIC
05e2a3de 844 select ARM_PSCI
4b8b5f25 845 select HAVE_ARM_ARCH_TIMER
05e2a3de 846
ccf50e23
RK
847#
848# This is sorted alphabetically by mach-* pathname. However, plat-*
849# Kconfigs may be included either alphabetically (according to the
850# plat- suffix) or along side the corresponding mach-* source.
851#
3e93a22b
GC
852source "arch/arm/mach-mvebu/Kconfig"
853
d9bfc86d
OR
854source "arch/arm/mach-asm9260/Kconfig"
855
95b8f20f
RK
856source "arch/arm/mach-at91/Kconfig"
857
1d22924e
AB
858source "arch/arm/mach-axxia/Kconfig"
859
8ac49e04
CD
860source "arch/arm/mach-bcm/Kconfig"
861
1c37fa10
SH
862source "arch/arm/mach-berlin/Kconfig"
863
1da177e4
LT
864source "arch/arm/mach-clps711x/Kconfig"
865
d94f944e
AV
866source "arch/arm/mach-cns3xxx/Kconfig"
867
95b8f20f
RK
868source "arch/arm/mach-davinci/Kconfig"
869
df8d742e
BS
870source "arch/arm/mach-digicolor/Kconfig"
871
95b8f20f
RK
872source "arch/arm/mach-dove/Kconfig"
873
e7736d47
LB
874source "arch/arm/mach-ep93xx/Kconfig"
875
1da177e4
LT
876source "arch/arm/mach-footbridge/Kconfig"
877
59d3a193
PZ
878source "arch/arm/mach-gemini/Kconfig"
879
387798b3
RH
880source "arch/arm/mach-highbank/Kconfig"
881
389ee0c2
HZ
882source "arch/arm/mach-hisi/Kconfig"
883
1da177e4
LT
884source "arch/arm/mach-integrator/Kconfig"
885
3f7e5815
LB
886source "arch/arm/mach-iop32x/Kconfig"
887
888source "arch/arm/mach-iop33x/Kconfig"
1da177e4 889
285f5fa7
DW
890source "arch/arm/mach-iop13xx/Kconfig"
891
1da177e4
LT
892source "arch/arm/mach-ixp4xx/Kconfig"
893
828989ad
SS
894source "arch/arm/mach-keystone/Kconfig"
895
95b8f20f
RK
896source "arch/arm/mach-ks8695/Kconfig"
897
3b8f5030
CC
898source "arch/arm/mach-meson/Kconfig"
899
95b8f20f
RK
900source "arch/arm/mach-msm/Kconfig"
901
17723fd3
JJ
902source "arch/arm/mach-moxart/Kconfig"
903
794d15b2
SS
904source "arch/arm/mach-mv78xx0/Kconfig"
905
3995eb82 906source "arch/arm/mach-imx/Kconfig"
1da177e4 907
f682a218
MB
908source "arch/arm/mach-mediatek/Kconfig"
909
1d3f33d5
SG
910source "arch/arm/mach-mxs/Kconfig"
911
95b8f20f 912source "arch/arm/mach-netx/Kconfig"
49cbe786 913
95b8f20f 914source "arch/arm/mach-nomadik/Kconfig"
95b8f20f 915
9851ca57
DT
916source "arch/arm/mach-nspire/Kconfig"
917
d48af15e
TL
918source "arch/arm/plat-omap/Kconfig"
919
920source "arch/arm/mach-omap1/Kconfig"
1da177e4 921
1dbae815
TL
922source "arch/arm/mach-omap2/Kconfig"
923
9dd0b194 924source "arch/arm/mach-orion5x/Kconfig"
585cf175 925
387798b3
RH
926source "arch/arm/mach-picoxcell/Kconfig"
927
95b8f20f
RK
928source "arch/arm/mach-pxa/Kconfig"
929source "arch/arm/plat-pxa/Kconfig"
585cf175 930
95b8f20f
RK
931source "arch/arm/mach-mmp/Kconfig"
932
8fc1b0f8
KG
933source "arch/arm/mach-qcom/Kconfig"
934
95b8f20f
RK
935source "arch/arm/mach-realview/Kconfig"
936
d63dc051
HS
937source "arch/arm/mach-rockchip/Kconfig"
938
95b8f20f 939source "arch/arm/mach-sa1100/Kconfig"
edabd38e 940
387798b3
RH
941source "arch/arm/mach-socfpga/Kconfig"
942
a7ed099f 943source "arch/arm/mach-spear/Kconfig"
a21765a7 944
65ebcc11
SK
945source "arch/arm/mach-sti/Kconfig"
946
85fd6d63 947source "arch/arm/mach-s3c24xx/Kconfig"
1da177e4 948
431107ea 949source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637 950
170f4e42
KK
951source "arch/arm/mach-s5pv210/Kconfig"
952
83014579 953source "arch/arm/mach-exynos/Kconfig"
e509b289 954source "arch/arm/plat-samsung/Kconfig"
cc0e72b8 955
882d01f9 956source "arch/arm/mach-shmobile/Kconfig"
52c543f9 957
3b52634f
MR
958source "arch/arm/mach-sunxi/Kconfig"
959
156a0997
BS
960source "arch/arm/mach-prima2/Kconfig"
961
c5f80065
EG
962source "arch/arm/mach-tegra/Kconfig"
963
95b8f20f 964source "arch/arm/mach-u300/Kconfig"
1da177e4 965
95b8f20f 966source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
967
968source "arch/arm/mach-versatile/Kconfig"
969
ceade897 970source "arch/arm/mach-vexpress/Kconfig"
420c34e4 971source "arch/arm/plat-versatile/Kconfig"
ceade897 972
6f35f9a9
TP
973source "arch/arm/mach-vt8500/Kconfig"
974
7ec80ddf 975source "arch/arm/mach-w90x900/Kconfig"
976
9a45eb69
JC
977source "arch/arm/mach-zynq/Kconfig"
978
1da177e4
LT
979# Definitions to make life easier
980config ARCH_ACORN
981 bool
982
7ae1f7ec
LB
983config PLAT_IOP
984 bool
469d3044 985 select GENERIC_CLOCKEVENTS
7ae1f7ec 986
69b02f6a
LB
987config PLAT_ORION
988 bool
bfe45e0b 989 select CLKSRC_MMIO
b1b3f49c 990 select COMMON_CLK
dc7ad3b3 991 select GENERIC_IRQ_CHIP
278b45b0 992 select IRQ_DOMAIN
69b02f6a 993
abcda1dc
TP
994config PLAT_ORION_LEGACY
995 bool
996 select PLAT_ORION
997
bd5ce433
EM
998config PLAT_PXA
999 bool
1000
f4b8b319
RK
1001config PLAT_VERSATILE
1002 bool
1003
e3887714
RK
1004config ARM_TIMER_SP804
1005 bool
bfe45e0b 1006 select CLKSRC_MMIO
7a0eca71 1007 select CLKSRC_OF if OF
e3887714 1008
d9a1beaa
AC
1009source "arch/arm/firmware/Kconfig"
1010
1da177e4
LT
1011source arch/arm/mm/Kconfig
1012
afe4b25e 1013config IWMMXT
d93003e8
SH
1014 bool "Enable iWMMXt support"
1015 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1016 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
afe4b25e
LB
1017 help
1018 Enable support for iWMMXt context switching at run time if
1019 running on a CPU that supports it.
1020
52108641 1021config MULTI_IRQ_HANDLER
1022 bool
1023 help
1024 Allow each machine to specify it's own IRQ handler at run time.
1025
3b93e7b0
HC
1026if !MMU
1027source "arch/arm/Kconfig-nommu"
1028endif
1029
3e0a07f8
GC
1030config PJ4B_ERRATA_4742
1031 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1032 depends on CPU_PJ4B && MACH_ARMADA_370
1033 default y
1034 help
1035 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1036 Event (WFE) IDLE states, a specific timing sensitivity exists between
1037 the retiring WFI/WFE instructions and the newly issued subsequent
1038 instructions. This sensitivity can result in a CPU hang scenario.
1039 Workaround:
1040 The software must insert either a Data Synchronization Barrier (DSB)
1041 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1042 instruction
1043
f0c4b8d6
WD
1044config ARM_ERRATA_326103
1045 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1046 depends on CPU_V6
1047 help
1048 Executing a SWP instruction to read-only memory does not set bit 11
1049 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1050 treat the access as a read, preventing a COW from occurring and
1051 causing the faulting task to livelock.
1052
9cba3ccc
CM
1053config ARM_ERRATA_411920
1054 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1055 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1056 help
1057 Invalidation of the Instruction Cache operation can
1058 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1059 It does not affect the MPCore. This option enables the ARM Ltd.
1060 recommended workaround.
1061
7ce236fc
CM
1062config ARM_ERRATA_430973
1063 bool "ARM errata: Stale prediction on replaced interworking branch"
1064 depends on CPU_V7
1065 help
1066 This option enables the workaround for the 430973 Cortex-A8
1067 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1068 interworking branch is replaced with another code sequence at the
1069 same virtual address, whether due to self-modifying code or virtual
1070 to physical address re-mapping, Cortex-A8 does not recover from the
1071 stale interworking branch prediction. This results in Cortex-A8
1072 executing the new code sequence in the incorrect ARM or Thumb state.
1073 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1074 and also flushes the branch target cache at every context switch.
1075 Note that setting specific bits in the ACTLR register may not be
1076 available in non-secure mode.
1077
855c551f
CM
1078config ARM_ERRATA_458693
1079 bool "ARM errata: Processor deadlock when a false hazard is created"
1080 depends on CPU_V7
62e4d357 1081 depends on !ARCH_MULTIPLATFORM
855c551f
CM
1082 help
1083 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1084 erratum. For very specific sequences of memory operations, it is
1085 possible for a hazard condition intended for a cache line to instead
1086 be incorrectly associated with a different cache line. This false
1087 hazard might then cause a processor deadlock. The workaround enables
1088 the L1 caching of the NEON accesses and disables the PLD instruction
1089 in the ACTLR register. Note that setting specific bits in the ACTLR
1090 register may not be available in non-secure mode.
1091
0516e464
CM
1092config ARM_ERRATA_460075
1093 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1094 depends on CPU_V7
62e4d357 1095 depends on !ARCH_MULTIPLATFORM
0516e464
CM
1096 help
1097 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1098 erratum. Any asynchronous access to the L2 cache may encounter a
1099 situation in which recent store transactions to the L2 cache are lost
1100 and overwritten with stale memory contents from external memory. The
1101 workaround disables the write-allocate mode for the L2 cache via the
1102 ACTLR register. Note that setting specific bits in the ACTLR register
1103 may not be available in non-secure mode.
1104
9f05027c
WD
1105config ARM_ERRATA_742230
1106 bool "ARM errata: DMB operation may be faulty"
1107 depends on CPU_V7 && SMP
62e4d357 1108 depends on !ARCH_MULTIPLATFORM
9f05027c
WD
1109 help
1110 This option enables the workaround for the 742230 Cortex-A9
1111 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1112 between two write operations may not ensure the correct visibility
1113 ordering of the two writes. This workaround sets a specific bit in
1114 the diagnostic register of the Cortex-A9 which causes the DMB
1115 instruction to behave as a DSB, ensuring the correct behaviour of
1116 the two writes.
1117
a672e99b
WD
1118config ARM_ERRATA_742231
1119 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1120 depends on CPU_V7 && SMP
62e4d357 1121 depends on !ARCH_MULTIPLATFORM
a672e99b
WD
1122 help
1123 This option enables the workaround for the 742231 Cortex-A9
1124 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1125 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1126 accessing some data located in the same cache line, may get corrupted
1127 data due to bad handling of the address hazard when the line gets
1128 replaced from one of the CPUs at the same time as another CPU is
1129 accessing it. This workaround sets specific bits in the diagnostic
1130 register of the Cortex-A9 which reduces the linefill issuing
1131 capabilities of the processor.
1132
69155794
JM
1133config ARM_ERRATA_643719
1134 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1135 depends on CPU_V7 && SMP
1136 help
1137 This option enables the workaround for the 643719 Cortex-A9 (prior to
1138 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1139 register returns zero when it should return one. The workaround
1140 corrects this value, ensuring cache maintenance operations which use
1141 it behave as intended and avoiding data corruption.
1142
cdf357f1
WD
1143config ARM_ERRATA_720789
1144 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
e66dc745 1145 depends on CPU_V7
cdf357f1
WD
1146 help
1147 This option enables the workaround for the 720789 Cortex-A9 (prior to
1148 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1149 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1150 As a consequence of this erratum, some TLB entries which should be
1151 invalidated are not, resulting in an incoherency in the system page
1152 tables. The workaround changes the TLB flushing routines to invalidate
1153 entries regardless of the ASID.
475d92fc
WD
1154
1155config ARM_ERRATA_743622
1156 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1157 depends on CPU_V7
62e4d357 1158 depends on !ARCH_MULTIPLATFORM
475d92fc
WD
1159 help
1160 This option enables the workaround for the 743622 Cortex-A9
efbc74ac 1161 (r2p*) erratum. Under very rare conditions, a faulty
475d92fc
WD
1162 optimisation in the Cortex-A9 Store Buffer may lead to data
1163 corruption. This workaround sets a specific bit in the diagnostic
1164 register of the Cortex-A9 which disables the Store Buffer
1165 optimisation, preventing the defect from occurring. This has no
1166 visible impact on the overall performance or power consumption of the
1167 processor.
1168
9a27c27c
WD
1169config ARM_ERRATA_751472
1170 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
ba90c516 1171 depends on CPU_V7
62e4d357 1172 depends on !ARCH_MULTIPLATFORM
9a27c27c
WD
1173 help
1174 This option enables the workaround for the 751472 Cortex-A9 (prior
1175 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1176 completion of a following broadcasted operation if the second
1177 operation is received by a CPU before the ICIALLUIS has completed,
1178 potentially leading to corrupted entries in the cache or TLB.
1179
fcbdc5fe
WD
1180config ARM_ERRATA_754322
1181 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1182 depends on CPU_V7
1183 help
1184 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1185 r3p*) erratum. A speculative memory access may cause a page table walk
1186 which starts prior to an ASID switch but completes afterwards. This
1187 can populate the micro-TLB with a stale entry which may be hit with
1188 the new ASID. This workaround places two dsb instructions in the mm
1189 switching code so that no page table walks can cross the ASID switch.
1190
5dab26af
WD
1191config ARM_ERRATA_754327
1192 bool "ARM errata: no automatic Store Buffer drain"
1193 depends on CPU_V7 && SMP
1194 help
1195 This option enables the workaround for the 754327 Cortex-A9 (prior to
1196 r2p0) erratum. The Store Buffer does not have any automatic draining
1197 mechanism and therefore a livelock may occur if an external agent
1198 continuously polls a memory location waiting to observe an update.
1199 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1200 written polling loops from denying visibility of updates to memory.
1201
145e10e1
CM
1202config ARM_ERRATA_364296
1203 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
fd832478 1204 depends on CPU_V6
145e10e1
CM
1205 help
1206 This options enables the workaround for the 364296 ARM1136
1207 r0p2 erratum (possible cache data corruption with
1208 hit-under-miss enabled). It sets the undocumented bit 31 in
1209 the auxiliary control register and the FI bit in the control
1210 register, thus disabling hit-under-miss without putting the
1211 processor into full low interrupt latency mode. ARM11MPCore
1212 is not affected.
1213
f630c1bd
WD
1214config ARM_ERRATA_764369
1215 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1216 depends on CPU_V7 && SMP
1217 help
1218 This option enables the workaround for erratum 764369
1219 affecting Cortex-A9 MPCore with two or more processors (all
1220 current revisions). Under certain timing circumstances, a data
1221 cache line maintenance operation by MVA targeting an Inner
1222 Shareable memory region may fail to proceed up to either the
1223 Point of Coherency or to the Point of Unification of the
1224 system. This workaround adds a DSB instruction before the
1225 relevant cache maintenance functions and sets a specific bit
1226 in the diagnostic control register of the SCU.
1227
7253b85c
SH
1228config ARM_ERRATA_775420
1229 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1230 depends on CPU_V7
1231 help
1232 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1233 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1234 operation aborts with MMU exception, it might cause the processor
1235 to deadlock. This workaround puts DSB before executing ISB if
1236 an abort may occur on cache maintenance.
1237
93dc6887
CM
1238config ARM_ERRATA_798181
1239 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1240 depends on CPU_V7 && SMP
1241 help
1242 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1243 adequately shooting down all use of the old entries. This
1244 option enables the Linux kernel workaround for this erratum
1245 which sends an IPI to the CPUs that are running the same ASID
1246 as the one being invalidated.
1247
84b6504f
WD
1248config ARM_ERRATA_773022
1249 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1250 depends on CPU_V7
1251 help
1252 This option enables the workaround for the 773022 Cortex-A15
1253 (up to r0p4) erratum. In certain rare sequences of code, the
1254 loop buffer may deliver incorrect instructions. This
1255 workaround disables the loop buffer to avoid the erratum.
1256
1da177e4
LT
1257endmenu
1258
1259source "arch/arm/common/Kconfig"
1260
1da177e4
LT
1261menu "Bus support"
1262
1da177e4
LT
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
8c7d1474
LP
1293config PCI_DOMAINS_GENERIC
1294 def_bool PCI_DOMAINS
1295
b080ac8a
MRJ
1296config PCI_NANOENGINE
1297 bool "BSE nanoEngine PCI support"
1298 depends on SA1100_NANOENGINE
1299 help
1300 Enable PCI on the BSE nanoEngine board.
1301
36e23590
MW
1302config PCI_SYSCALL
1303 def_bool PCI
1304
a0113a99
MR
1305config PCI_HOST_ITE8152
1306 bool
1307 depends on PCI && MACH_ARMCORE
1308 default y
1309 select DMABOUNCE
1310
1da177e4 1311source "drivers/pci/Kconfig"
3f06d157 1312source "drivers/pci/pcie/Kconfig"
1da177e4
LT
1313
1314source "drivers/pcmcia/Kconfig"
1315
1316endmenu
1317
1318menu "Kernel Features"
1319
3b55658a
DM
1320config HAVE_SMP
1321 bool
1322 help
1323 This option should be selected by machines which have an SMP-
1324 capable CPU.
1325
1326 The only effect of this option is to make the SMP-related
1327 options available to the user for configuration.
1328
1da177e4 1329config SMP
bb2d8130 1330 bool "Symmetric Multi-Processing"
fbb4ddac 1331 depends on CPU_V6K || CPU_V7
bc28248e 1332 depends on GENERIC_CLOCKEVENTS
3b55658a 1333 depends on HAVE_SMP
801bb21c 1334 depends on MMU || ARM_MPU
1da177e4
LT
1335 help
1336 This enables support for systems with more than one CPU. If you have
4a474157
RG
1337 a system with only one CPU, say N. If you have a system with more
1338 than one CPU, say Y.
1da177e4 1339
4a474157 1340 If you say N here, the kernel will run on uni- and multiprocessor
1da177e4 1341 machines, but will use only one CPU of a multiprocessor machine. If
4a474157
RG
1342 you say Y here, the kernel will run on many, but not all,
1343 uniprocessor machines. On a uniprocessor machine, the kernel
1344 will run faster if you say N here.
1da177e4 1345
395cf969 1346 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1347 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1348 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1349
1350 If you don't know what to do here, say N.
1351
f00ec48f
RK
1352config SMP_ON_UP
1353 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
801bb21c 1354 depends on SMP && !XIP_KERNEL && MMU
f00ec48f
RK
1355 default y
1356 help
1357 SMP kernels contain instructions which fail on non-SMP processors.
1358 Enabling this option allows the kernel to modify itself to make
1359 these instructions safe. Disabling it allows about 1K of space
1360 savings.
1361
1362 If you don't know what to do here, say Y.
1363
c9018aab
VG
1364config ARM_CPU_TOPOLOGY
1365 bool "Support cpu topology definition"
1366 depends on SMP && CPU_V7
1367 default y
1368 help
1369 Support ARM cpu topology definition. The MPIDR register defines
1370 affinity between processors which is then used to describe the cpu
1371 topology of an ARM System.
1372
1373config SCHED_MC
1374 bool "Multi-core scheduler support"
1375 depends on ARM_CPU_TOPOLOGY
1376 help
1377 Multi-core scheduler support improves the CPU scheduler's decision
1378 making when dealing with multi-core CPU chips at a cost of slightly
1379 increased overhead in some places. If unsure say N here.
1380
1381config SCHED_SMT
1382 bool "SMT scheduler support"
1383 depends on ARM_CPU_TOPOLOGY
1384 help
1385 Improves the CPU scheduler's decision making when dealing with
1386 MultiThreading at a cost of slightly increased overhead in some
1387 places. If unsure say N here.
1388
a8cbcd92
RK
1389config HAVE_ARM_SCU
1390 bool
a8cbcd92
RK
1391 help
1392 This option enables support for the ARM system coherency unit
1393
8a4da6e3 1394config HAVE_ARM_ARCH_TIMER
022c03a2
MZ
1395 bool "Architected timer support"
1396 depends on CPU_V7
8a4da6e3 1397 select ARM_ARCH_TIMER
0c403462 1398 select GENERIC_CLOCKEVENTS
022c03a2
MZ
1399 help
1400 This option enables support for the ARM architected timer
1401
f32f4ce2
RK
1402config HAVE_ARM_TWD
1403 bool
1404 depends on SMP
da4a686a 1405 select CLKSRC_OF if OF
f32f4ce2
RK
1406 help
1407 This options enables support for the ARM timer and watchdog unit
1408
e8db288e
NP
1409config MCPM
1410 bool "Multi-Cluster Power Management"
1411 depends on CPU_V7 && SMP
1412 help
1413 This option provides the common power management infrastructure
1414 for (multi-)cluster based systems, such as big.LITTLE based
1415 systems.
1416
ebf4a5c5
HZ
1417config MCPM_QUAD_CLUSTER
1418 bool
1419 depends on MCPM
1420 help
1421 To avoid wasting resources unnecessarily, MCPM only supports up
1422 to 2 clusters by default.
1423 Platforms with 3 or 4 clusters that use MCPM must select this
1424 option to allow the additional clusters to be managed.
1425
1c33be57
NP
1426config BIG_LITTLE
1427 bool "big.LITTLE support (Experimental)"
1428 depends on CPU_V7 && SMP
1429 select MCPM
1430 help
1431 This option enables support selections for the big.LITTLE
1432 system architecture.
1433
1434config BL_SWITCHER
1435 bool "big.LITTLE switcher support"
1436 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
1c33be57 1437 select ARM_CPU_SUSPEND
51aaf81f 1438 select CPU_PM
1c33be57
NP
1439 help
1440 The big.LITTLE "switcher" provides the core functionality to
1441 transparently handle transition between a cluster of A15's
1442 and a cluster of A7's in a big.LITTLE system.
1443
b22537c6
NP
1444config BL_SWITCHER_DUMMY_IF
1445 tristate "Simple big.LITTLE switcher user interface"
1446 depends on BL_SWITCHER && DEBUG_KERNEL
1447 help
1448 This is a simple and dummy char dev interface to control
1449 the big.LITTLE switcher core code. It is meant for
1450 debugging purposes only.
1451
8d5796d2
LB
1452choice
1453 prompt "Memory split"
006fa259 1454 depends on MMU
8d5796d2
LB
1455 default VMSPLIT_3G
1456 help
1457 Select the desired split between kernel and user memory.
1458
1459 If you are not absolutely sure what you are doing, leave this
1460 option alone!
1461
1462 config VMSPLIT_3G
1463 bool "3G/1G user/kernel split"
1464 config VMSPLIT_2G
1465 bool "2G/2G user/kernel split"
1466 config VMSPLIT_1G
1467 bool "1G/3G user/kernel split"
1468endchoice
1469
1470config PAGE_OFFSET
1471 hex
006fa259 1472 default PHYS_OFFSET if !MMU
8d5796d2
LB
1473 default 0x40000000 if VMSPLIT_1G
1474 default 0x80000000 if VMSPLIT_2G
1475 default 0xC0000000
1476
1da177e4
LT
1477config NR_CPUS
1478 int "Maximum number of CPUs (2-32)"
1479 range 2 32
1480 depends on SMP
1481 default "4"
1482
a054a811 1483config HOTPLUG_CPU
00b7dede 1484 bool "Support for hot-pluggable CPUs"
40b31360 1485 depends on SMP
a054a811
RK
1486 help
1487 Say Y here to experiment with turning CPUs off and on. CPUs
1488 can be controlled through /sys/devices/system/cpu.
1489
2bdd424f
WD
1490config ARM_PSCI
1491 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1492 depends on CPU_V7
1493 help
1494 Say Y here if you want Linux to communicate with system firmware
1495 implementing the PSCI specification for CPU-centric power
1496 management operations described in ARM document number ARM DEN
1497 0022A ("Power State Coordination Interface System Software on
1498 ARM processors").
1499
2a6ad871
MR
1500# The GPIO number here must be sorted by descending number. In case of
1501# a multiplatform kernel, we just want the highest value required by the
1502# selected platforms.
44986ab0
PDSN
1503config ARCH_NR_GPIO
1504 int
6a4d8f36 1505 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA || ARCH_ZYNQ
aa42587a
TF
1506 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1507 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
eb171a99 1508 default 416 if ARCH_SUNXI
06b851e5 1509 default 392 if ARCH_U8500
01bb914c 1510 default 352 if ARCH_VT8500
7b5da4c3 1511 default 288 if ARCH_ROCKCHIP
2a6ad871 1512 default 264 if MACH_H4700
44986ab0
PDSN
1513 default 0
1514 help
1515 Maximum number of GPIOs in the system.
1516
1517 If unsure, leave the default value.
1518
d45a398f 1519source kernel/Kconfig.preempt
1da177e4 1520
c9218b16 1521config HZ_FIXED
f8065813 1522 int
070b8b43 1523 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
a73ddc61 1524 ARCH_S5PV210 || ARCH_EXYNOS4
5248c657 1525 default AT91_TIMER_HZ if ARCH_AT91
bf98c1ea 1526 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
47d84682 1527 default 0
c9218b16
RK
1528
1529choice
47d84682 1530 depends on HZ_FIXED = 0
c9218b16
RK
1531 prompt "Timer frequency"
1532
1533config HZ_100
1534 bool "100 Hz"
1535
1536config HZ_200
1537 bool "200 Hz"
1538
1539config HZ_250
1540 bool "250 Hz"
1541
1542config HZ_300
1543 bool "300 Hz"
1544
1545config HZ_500
1546 bool "500 Hz"
1547
1548config HZ_1000
1549 bool "1000 Hz"
1550
1551endchoice
1552
1553config HZ
1554 int
47d84682 1555 default HZ_FIXED if HZ_FIXED != 0
c9218b16
RK
1556 default 100 if HZ_100
1557 default 200 if HZ_200
1558 default 250 if HZ_250
1559 default 300 if HZ_300
1560 default 500 if HZ_500
1561 default 1000
1562
1563config SCHED_HRTICK
1564 def_bool HIGH_RES_TIMERS
f8065813 1565
16c79651 1566config THUMB2_KERNEL
bc7dea00 1567 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
4477ca45 1568 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
bc7dea00 1569 default y if CPU_THUMBONLY
16c79651
CM
1570 select AEABI
1571 select ARM_ASM_UNIFIED
89bace65 1572 select ARM_UNWIND
16c79651
CM
1573 help
1574 By enabling this option, the kernel will be compiled in
1575 Thumb-2 mode. A compiler/assembler that understand the unified
1576 ARM-Thumb syntax is needed.
1577
1578 If unsure, say N.
1579
6f685c5c
DM
1580config THUMB2_AVOID_R_ARM_THM_JUMP11
1581 bool "Work around buggy Thumb-2 short branch relocations in gas"
1582 depends on THUMB2_KERNEL && MODULES
1583 default y
1584 help
1585 Various binutils versions can resolve Thumb-2 branches to
1586 locally-defined, preemptible global symbols as short-range "b.n"
1587 branch instructions.
1588
1589 This is a problem, because there's no guarantee the final
1590 destination of the symbol, or any candidate locations for a
1591 trampoline, are within range of the branch. For this reason, the
1592 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1593 relocation in modules at all, and it makes little sense to add
1594 support.
1595
1596 The symptom is that the kernel fails with an "unsupported
1597 relocation" error when loading some modules.
1598
1599 Until fixed tools are available, passing
1600 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1601 code which hits this problem, at the cost of a bit of extra runtime
1602 stack usage in some cases.
1603
1604 The problem is described in more detail at:
1605 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1606
1607 Only Thumb-2 kernels are affected.
1608
1609 Unless you are sure your tools don't have this problem, say Y.
1610
0becb088
CM
1611config ARM_ASM_UNIFIED
1612 bool
1613
704bdda0
NP
1614config AEABI
1615 bool "Use the ARM EABI to compile the kernel"
1616 help
1617 This option allows for the kernel to be compiled using the latest
1618 ARM ABI (aka EABI). This is only useful if you are using a user
1619 space environment that is also compiled with EABI.
1620
1621 Since there are major incompatibilities between the legacy ABI and
1622 EABI, especially with regard to structure member alignment, this
1623 option also changes the kernel syscall calling convention to
1624 disambiguate both ABIs and allow for backward compatibility support
1625 (selected with CONFIG_OABI_COMPAT).
1626
1627 To use this you need GCC version 4.0.0 or later.
1628
6c90c872 1629config OABI_COMPAT
a73a3ff1 1630 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
d6f94fa0 1631 depends on AEABI && !THUMB2_KERNEL
6c90c872
NP
1632 help
1633 This option preserves the old syscall interface along with the
1634 new (ARM EABI) one. It also provides a compatibility layer to
1635 intercept syscalls that have structure arguments which layout
1636 in memory differs between the legacy ABI and the new ARM EABI
1637 (only for non "thumb" binaries). This option adds a tiny
1638 overhead to all syscalls and produces a slightly larger kernel.
91702175
KC
1639
1640 The seccomp filter system will not be available when this is
1641 selected, since there is no way yet to sensibly distinguish
1642 between calling conventions during filtering.
1643
6c90c872
NP
1644 If you know you'll be using only pure EABI user space then you
1645 can say N here. If this option is not selected and you attempt
1646 to execute a legacy ABI binary then the result will be
1647 UNPREDICTABLE (in fact it can be predicted that it won't work
b02f8467 1648 at all). If in doubt say N.
6c90c872 1649
eb33575c 1650config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1651 bool
e80d6a24 1652
05944d74
RK
1653config ARCH_SPARSEMEM_ENABLE
1654 bool
1655
07a2f737
RK
1656config ARCH_SPARSEMEM_DEFAULT
1657 def_bool ARCH_SPARSEMEM_ENABLE
1658
05944d74 1659config ARCH_SELECT_MEMORY_MODEL
be370302 1660 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1661
7b7bf499
WD
1662config HAVE_ARCH_PFN_VALID
1663 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1664
b8cd51af
SC
1665config HAVE_GENERIC_RCU_GUP
1666 def_bool y
1667 depends on ARM_LPAE
1668
053a96ca 1669config HIGHMEM
e8db89a2
RK
1670 bool "High Memory Support"
1671 depends on MMU
053a96ca
NP
1672 help
1673 The address space of ARM processors is only 4 Gigabytes large
1674 and it has to accommodate user address space, kernel address
1675 space as well as some memory mapped IO. That means that, if you
1676 have a large amount of physical memory and/or IO, not all of the
1677 memory can be "permanently mapped" by the kernel. The physical
1678 memory that is not permanently mapped is called "high memory".
1679
1680 Depending on the selected kernel/user memory split, minimum
1681 vmalloc space and actual amount of RAM, you may not need this
1682 option which should result in a slightly faster kernel.
1683
1684 If unsure, say n.
1685
65cec8e3
RK
1686config HIGHPTE
1687 bool "Allocate 2nd-level pagetables from highmem"
1688 depends on HIGHMEM
65cec8e3 1689
1b8873a0
JI
1690config HW_PERF_EVENTS
1691 bool "Enable hardware performance counter support for perf events"
f0d1bc47 1692 depends on PERF_EVENTS
1b8873a0
JI
1693 default y
1694 help
1695 Enable hardware performance counter support for perf events. If
1696 disabled, perf events will use software events only.
1697
1355e2a6
CM
1698config SYS_SUPPORTS_HUGETLBFS
1699 def_bool y
1700 depends on ARM_LPAE
1701
8d962507
CM
1702config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1703 def_bool y
1704 depends on ARM_LPAE
1705
4bfab203
SC
1706config ARCH_WANT_GENERAL_HUGETLB
1707 def_bool y
1708
3f22ab27
DH
1709source "mm/Kconfig"
1710
c1b2d970 1711config FORCE_MAX_ZONEORDER
bf98c1ea
LP
1712 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1713 range 11 64 if ARCH_SHMOBILE_LEGACY
898f08e1 1714 default "12" if SOC_AM33XX
6d85e2b0 1715 default "9" if SA1111 || ARCH_EFM32
c1b2d970
MD
1716 default "11"
1717 help
1718 The kernel memory allocator divides physically contiguous memory
1719 blocks into "zones", where each zone is a power of two number of
1720 pages. This option selects the largest power of two that the kernel
1721 keeps in the memory allocator. If you need to allocate very large
1722 blocks of physically contiguous memory, then you may need to
1723 increase this value.
1724
1725 This config option is actually maximum order plus one. For example,
1726 a value of 11 means that the largest free memory block is 2^10 pages.
1727
1da177e4
LT
1728config ALIGNMENT_TRAP
1729 bool
f12d0d7c 1730 depends on CPU_CP15_MMU
1da177e4 1731 default y if !ARCH_EBSA110
e119bfff 1732 select HAVE_PROC_CPU if PROC_FS
1da177e4 1733 help
84eb8d06 1734 ARM processors cannot fetch/store information which is not
1da177e4
LT
1735 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1736 address divisible by 4. On 32-bit ARM processors, these non-aligned
1737 fetch/store instructions will be emulated in software if you say
1738 here, which has a severe performance impact. This is necessary for
1739 correct operation of some network protocols. With an IP-only
1740 configuration it is safe to say N, otherwise say Y.
1741
39ec58f3 1742config UACCESS_WITH_MEMCPY
38ef2ad5
LW
1743 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1744 depends on MMU
39ec58f3
LB
1745 default y if CPU_FEROCEON
1746 help
1747 Implement faster copy_to_user and clear_user methods for CPU
1748 cores where a 8-word STM instruction give significantly higher
1749 memory write throughput than a sequence of individual 32bit stores.
1750
1751 A possible side effect is a slight increase in scheduling latency
1752 between threads sharing the same address space if they invoke
1753 such copy operations with large buffers.
1754
1755 However, if the CPU data cache is using a write-allocate mode,
1756 this option is unlikely to provide any performance gain.
1757
70c70d97
NP
1758config SECCOMP
1759 bool
1760 prompt "Enable seccomp to safely compute untrusted bytecode"
1761 ---help---
1762 This kernel feature is useful for number crunching applications
1763 that may need to compute untrusted bytecode during their
1764 execution. By using pipes or other transports made available to
1765 the process as file descriptors supporting the read/write
1766 syscalls, it's possible to isolate those applications in
1767 their own address space using seccomp. Once seccomp is
1768 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1769 and the task is only allowed to execute a few safe syscalls
1770 defined by each seccomp mode.
1771
06e6295b
SS
1772config SWIOTLB
1773 def_bool y
1774
1775config IOMMU_HELPER
1776 def_bool SWIOTLB
1777
eff8d644
SS
1778config XEN_DOM0
1779 def_bool y
1780 depends on XEN
1781
1782config XEN
c2ba1f7d 1783 bool "Xen guest support on ARM"
85323a99 1784 depends on ARM && AEABI && OF
f880b67d 1785 depends on CPU_V7 && !CPU_V6
85323a99 1786 depends on !GENERIC_ATOMIC64
7693decc 1787 depends on MMU
51aaf81f 1788 select ARCH_DMA_ADDR_T_64BIT
17b7ab80 1789 select ARM_PSCI
83862ccf 1790 select SWIOTLB_XEN
eff8d644
SS
1791 help
1792 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1793
1da177e4
LT
1794endmenu
1795
1796menu "Boot options"
1797
9eb8f674
GL
1798config USE_OF
1799 bool "Flattened Device Tree support"
b1b3f49c 1800 select IRQ_DOMAIN
9eb8f674
GL
1801 select OF
1802 select OF_EARLY_FLATTREE
bcedb5f9 1803 select OF_RESERVED_MEM
9eb8f674
GL
1804 help
1805 Include support for flattened device tree machine descriptions.
1806
bd51e2f5
NP
1807config ATAGS
1808 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1809 default y
1810 help
1811 This is the traditional way of passing data to the kernel at boot
1812 time. If you are solely relying on the flattened device tree (or
1813 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1814 to remove ATAGS support from your kernel binary. If unsure,
1815 leave this to y.
1816
1817config DEPRECATED_PARAM_STRUCT
1818 bool "Provide old way to pass kernel parameters"
1819 depends on ATAGS
1820 help
1821 This was deprecated in 2001 and announced to live on for 5 years.
1822 Some old boot loaders still use this way.
1823
1da177e4
LT
1824# Compressed boot loader in ROM. Yes, we really want to ask about
1825# TEXT and BSS so we preserve their values in the config files.
1826config ZBOOT_ROM_TEXT
1827 hex "Compressed ROM boot loader base address"
1828 default "0"
1829 help
1830 The physical address at which the ROM-able zImage is to be
1831 placed in the target. Platforms which normally make use of
1832 ROM-able zImage formats normally set this to a suitable
1833 value in their defconfig file.
1834
1835 If ZBOOT_ROM is not enabled, this has no effect.
1836
1837config ZBOOT_ROM_BSS
1838 hex "Compressed ROM boot loader BSS address"
1839 default "0"
1840 help
f8c440b2
DF
1841 The base address of an area of read/write memory in the target
1842 for the ROM-able zImage which must be available while the
1843 decompressor is running. It must be large enough to hold the
1844 entire decompressed kernel plus an additional 128 KiB.
1845 Platforms which normally make use of ROM-able zImage formats
1846 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1847
1848 If ZBOOT_ROM is not enabled, this has no effect.
1849
1850config ZBOOT_ROM
1851 bool "Compressed boot loader in ROM/flash"
1852 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
10968131 1853 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
1da177e4
LT
1854 help
1855 Say Y here if you intend to execute your compressed kernel image
1856 (zImage) directly from ROM or flash. If unsure, say N.
1857
090ab3ff
SH
1858choice
1859 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
d6f94fa0 1860 depends on ZBOOT_ROM && ARCH_SH7372
090ab3ff
SH
1861 default ZBOOT_ROM_NONE
1862 help
1863 Include experimental SD/MMC loading code in the ROM-able zImage.
59bf8964 1864 With this enabled it is possible to write the ROM-able zImage
090ab3ff
SH
1865 kernel image to an MMC or SD card and boot the kernel straight
1866 from the reset vector. At reset the processor Mask ROM will load
59bf8964 1867 the first part of the ROM-able zImage which in turn loads the
090ab3ff
SH
1868 rest the kernel image to RAM.
1869
1870config ZBOOT_ROM_NONE
1871 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1872 help
1873 Do not load image from SD or MMC
1874
f45b1149
SH
1875config ZBOOT_ROM_MMCIF
1876 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1877 help
090ab3ff
SH
1878 Load image from MMCIF hardware block.
1879
1880config ZBOOT_ROM_SH_MOBILE_SDHI
1881 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1882 help
1883 Load image from SDHI hardware block
1884
1885endchoice
f45b1149 1886
e2a6a3aa
JB
1887config ARM_APPENDED_DTB
1888 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
10968131 1889 depends on OF
e2a6a3aa
JB
1890 help
1891 With this option, the boot code will look for a device tree binary
1892 (DTB) appended to zImage
1893 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1894
1895 This is meant as a backward compatibility convenience for those
1896 systems with a bootloader that can't be upgraded to accommodate
1897 the documented boot protocol using a device tree.
1898
1899 Beware that there is very little in terms of protection against
1900 this option being confused by leftover garbage in memory that might
1901 look like a DTB header after a reboot if no actual DTB is appended
1902 to zImage. Do not leave this option active in a production kernel
1903 if you don't intend to always append a DTB. Proper passing of the
1904 location into r2 of a bootloader provided DTB is always preferable
1905 to this option.
1906
b90b9a38
NP
1907config ARM_ATAG_DTB_COMPAT
1908 bool "Supplement the appended DTB with traditional ATAG information"
1909 depends on ARM_APPENDED_DTB
1910 help
1911 Some old bootloaders can't be updated to a DTB capable one, yet
1912 they provide ATAGs with memory configuration, the ramdisk address,
1913 the kernel cmdline string, etc. Such information is dynamically
1914 provided by the bootloader and can't always be stored in a static
1915 DTB. To allow a device tree enabled kernel to be used with such
1916 bootloaders, this option allows zImage to extract the information
1917 from the ATAG list and store it at run time into the appended DTB.
1918
d0f34a11
GR
1919choice
1920 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1921 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1922
1923config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1924 bool "Use bootloader kernel arguments if available"
1925 help
1926 Uses the command-line options passed by the boot loader instead of
1927 the device tree bootargs property. If the boot loader doesn't provide
1928 any, the device tree bootargs property will be used.
1929
1930config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1931 bool "Extend with bootloader kernel arguments"
1932 help
1933 The command-line arguments provided by the boot loader will be
1934 appended to the the device tree bootargs property.
1935
1936endchoice
1937
1da177e4
LT
1938config CMDLINE
1939 string "Default kernel command string"
1940 default ""
1941 help
1942 On some architectures (EBSA110 and CATS), there is currently no way
1943 for the boot loader to pass arguments to the kernel. For these
1944 architectures, you should supply some command-line options at build
1945 time by entering them here. As a minimum, you should specify the
1946 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1947
4394c124
VB
1948choice
1949 prompt "Kernel command line type" if CMDLINE != ""
1950 default CMDLINE_FROM_BOOTLOADER
bd51e2f5 1951 depends on ATAGS
4394c124
VB
1952
1953config CMDLINE_FROM_BOOTLOADER
1954 bool "Use bootloader kernel arguments if available"
1955 help
1956 Uses the command-line options passed by the boot loader. If
1957 the boot loader doesn't provide any, the default kernel command
1958 string provided in CMDLINE will be used.
1959
1960config CMDLINE_EXTEND
1961 bool "Extend bootloader kernel arguments"
1962 help
1963 The command-line arguments provided by the boot loader will be
1964 appended to the default kernel command string.
1965
92d2040d
AH
1966config CMDLINE_FORCE
1967 bool "Always use the default kernel command string"
92d2040d
AH
1968 help
1969 Always use the default kernel command string, even if the boot
1970 loader passes other arguments to the kernel.
1971 This is useful if you cannot or don't want to change the
1972 command-line options your boot loader passes to the kernel.
4394c124 1973endchoice
92d2040d 1974
1da177e4
LT
1975config XIP_KERNEL
1976 bool "Kernel Execute-In-Place from ROM"
10968131 1977 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
1da177e4
LT
1978 help
1979 Execute-In-Place allows the kernel to run from non-volatile storage
1980 directly addressable by the CPU, such as NOR flash. This saves RAM
1981 space since the text section of the kernel is not loaded from flash
1982 to RAM. Read-write sections, such as the data section and stack,
1983 are still copied to RAM. The XIP kernel is not compressed since
1984 it has to run directly from flash, so it will take more space to
1985 store it. The flash address used to link the kernel object files,
1986 and for storing it, is configuration dependent. Therefore, if you
1987 say Y here, you must know the proper physical address where to
1988 store the kernel image depending on your own flash memory usage.
1989
1990 Also note that the make target becomes "make xipImage" rather than
1991 "make zImage" or "make Image". The final kernel binary to put in
1992 ROM memory will be arch/arm/boot/xipImage.
1993
1994 If unsure, say N.
1995
1996config XIP_PHYS_ADDR
1997 hex "XIP Kernel Physical Location"
1998 depends on XIP_KERNEL
1999 default "0x00080000"
2000 help
2001 This is the physical address in your flash memory the kernel will
2002 be linked for and stored to. This address is dependent on your
2003 own flash usage.
2004
c587e4a6
RP
2005config KEXEC
2006 bool "Kexec system call (EXPERIMENTAL)"
19ab428f 2007 depends on (!SMP || PM_SLEEP_SMP)
c587e4a6
RP
2008 help
2009 kexec is a system call that implements the ability to shutdown your
2010 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 2011 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
2012 you can start any kernel with it, not just Linux.
2013
2014 It is an ongoing process to be certain the hardware in a machine
2015 is properly shutdown, so do not be surprised if this code does not
bf220695 2016 initially work for you.
c587e4a6 2017
4cd9d6f7
RP
2018config ATAGS_PROC
2019 bool "Export atags in procfs"
bd51e2f5 2020 depends on ATAGS && KEXEC
b98d7291 2021 default y
4cd9d6f7
RP
2022 help
2023 Should the atags used to boot the kernel be exported in an "atags"
2024 file in procfs. Useful with kexec.
2025
cb5d39b3
MW
2026config CRASH_DUMP
2027 bool "Build kdump crash kernel (EXPERIMENTAL)"
cb5d39b3
MW
2028 help
2029 Generate crash dump after being started by kexec. This should
2030 be normally only set in special crash dump kernels which are
2031 loaded in the main kernel with kexec-tools into a specially
2032 reserved region and then later executed after a crash by
2033 kdump/kexec. The crash dump kernel must be compiled to a
2034 memory address not used by the main kernel
2035
2036 For more details see Documentation/kdump/kdump.txt
2037
e69edc79
EM
2038config AUTO_ZRELADDR
2039 bool "Auto calculation of the decompressed kernel image address"
e69edc79
EM
2040 help
2041 ZRELADDR is the physical address where the decompressed kernel
2042 image will be placed. If AUTO_ZRELADDR is selected, the address
2043 will be determined at run-time by masking the current IP with
2044 0xf8000000. This assumes the zImage being placed in the first 128MB
2045 from start of memory.
2046
1da177e4
LT
2047endmenu
2048
ac9d7efc 2049menu "CPU Power Management"
1da177e4 2050
1da177e4 2051source "drivers/cpufreq/Kconfig"
1da177e4 2052
ac9d7efc
RK
2053source "drivers/cpuidle/Kconfig"
2054
2055endmenu
2056
1da177e4
LT
2057menu "Floating point emulation"
2058
2059comment "At least one emulation must be selected"
2060
2061config FPE_NWFPE
2062 bool "NWFPE math emulation"
593c252a 2063 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2064 ---help---
2065 Say Y to include the NWFPE floating point emulator in the kernel.
2066 This is necessary to run most binaries. Linux does not currently
2067 support floating point hardware so you need to say Y here even if
2068 your machine has an FPA or floating point co-processor podule.
2069
2070 You may say N here if you are going to load the Acorn FPEmulator
2071 early in the bootup.
2072
2073config FPE_NWFPE_XP
2074 bool "Support extended precision"
bedf142b 2075 depends on FPE_NWFPE
1da177e4
LT
2076 help
2077 Say Y to include 80-bit support in the kernel floating-point
2078 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2079 Note that gcc does not generate 80-bit operations by default,
2080 so in most cases this option only enlarges the size of the
2081 floating point emulator without any good reason.
2082
2083 You almost surely want to say N here.
2084
2085config FPE_FASTFPE
2086 bool "FastFPE math emulation (EXPERIMENTAL)"
d6f94fa0 2087 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
1da177e4
LT
2088 ---help---
2089 Say Y here to include the FAST floating point emulator in the kernel.
2090 This is an experimental much faster emulator which now also has full
2091 precision for the mantissa. It does not support any exceptions.
2092 It is very simple, and approximately 3-6 times faster than NWFPE.
2093
2094 It should be sufficient for most programs. It may be not suitable
2095 for scientific calculations, but you have to check this for yourself.
2096 If you do not feel you need a faster FP emulation you should better
2097 choose NWFPE.
2098
2099config VFP
2100 bool "VFP-format floating point maths"
e399b1a4 2101 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2102 help
2103 Say Y to include VFP support code in the kernel. This is needed
2104 if your hardware includes a VFP unit.
2105
2106 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2107 release notes and additional status information.
2108
2109 Say N if your target does not have VFP hardware.
2110
25ebee02
CM
2111config VFPv3
2112 bool
2113 depends on VFP
2114 default y if CPU_V7
2115
b5872db4
CM
2116config NEON
2117 bool "Advanced SIMD (NEON) Extension support"
2118 depends on VFPv3 && CPU_V7
2119 help
2120 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2121 Extension.
2122
73c132c1
AB
2123config KERNEL_MODE_NEON
2124 bool "Support for NEON in kernel mode"
c4a30c3b 2125 depends on NEON && AEABI
73c132c1
AB
2126 help
2127 Say Y to include support for NEON in kernel mode.
2128
1da177e4
LT
2129endmenu
2130
2131menu "Userspace binary formats"
2132
2133source "fs/Kconfig.binfmt"
2134
2135config ARTHUR
2136 tristate "RISC OS personality"
704bdda0 2137 depends on !AEABI
1da177e4
LT
2138 help
2139 Say Y here to include the kernel code necessary if you want to run
2140 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2141 experimental; if this sounds frightening, say N and sleep in peace.
2142 You can also say M here to compile this support as a module (which
2143 will be called arthur).
2144
2145endmenu
2146
2147menu "Power management options"
2148
eceab4ac 2149source "kernel/power/Kconfig"
1da177e4 2150
f4cb5700 2151config ARCH_SUSPEND_POSSIBLE
19a0519d 2152 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
f0d75153 2153 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
f4cb5700
JB
2154 def_bool y
2155
15e0d9e3
AB
2156config ARM_CPU_SUSPEND
2157 def_bool PM_SLEEP
2158
603fb42a
SC
2159config ARCH_HIBERNATION_POSSIBLE
2160 bool
2161 depends on MMU
2162 default y if ARCH_SUSPEND_POSSIBLE
2163
1da177e4
LT
2164endmenu
2165
d5950b43
SR
2166source "net/Kconfig"
2167
ac25150f 2168source "drivers/Kconfig"
1da177e4
LT
2169
2170source "fs/Kconfig"
2171
1da177e4
LT
2172source "arch/arm/Kconfig.debug"
2173
2174source "security/Kconfig"
2175
2176source "crypto/Kconfig"
2177
2178source "lib/Kconfig"
749cf76c
CD
2179
2180source "arch/arm/kvm/Kconfig"