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ARM: S5PV210: Enable multi-platform build support
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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
017f161a 9 select ARCH_USE_BUILTIN_BSWAP
0cbad9c9 10 select ARCH_USE_CMPXCHG_LOCKREF
b1b3f49c 11 select ARCH_WANT_IPC_PARSE_VERSION
ee951c63 12 select BUILDTIME_EXTABLE_SORT if MMU
171b3f0d 13 select CLONE_BACKWARDS
b1b3f49c 14 select CPU_PM if (SUSPEND || CPU_IDLE)
dce5c9e3 15 select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
4477ca45 16 select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
b1b3f49c 17 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
171b3f0d 18 select GENERIC_IDLE_POLL_SETUP
b1b3f49c
RK
19 select GENERIC_IRQ_PROBE
20 select GENERIC_IRQ_SHOW
b1b3f49c 21 select GENERIC_PCI_IOMAP
38ff87f7 22 select GENERIC_SCHED_CLOCK
b1b3f49c
RK
23 select GENERIC_SMP_IDLE_THREAD
24 select GENERIC_STRNCPY_FROM_USER
25 select GENERIC_STRNLEN_USER
26 select HARDIRQS_SW_RESEND
7a017721 27 select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
09f05d85 28 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
5cbad0eb 29 select HAVE_ARCH_KGDB
91702175 30 select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
0693bf68 31 select HAVE_ARCH_TRACEHOOK
b1b3f49c 32 select HAVE_BPF_JIT
51aaf81f 33 select HAVE_CC_STACKPROTECTOR
171b3f0d 34 select HAVE_CONTEXT_TRACKING
b1b3f49c
RK
35 select HAVE_C_RECORDMCOUNT
36 select HAVE_DEBUG_KMEMLEAK
37 select HAVE_DMA_API_DEBUG
38 select HAVE_DMA_ATTRS
39 select HAVE_DMA_CONTIGUOUS if MMU
80be7a7f 40 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
dce5c9e3 41 select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
b1b3f49c 42 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
0e341af8 43 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
b1b3f49c 44 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 45 select HAVE_GENERIC_DMA_COHERENT
b1b3f49c
RK
46 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
47 select HAVE_IDE if PCI || ISA || PCMCIA
87c46b6c 48 select HAVE_IRQ_TIME_ACCOUNTING
e7db7b42 49 select HAVE_KERNEL_GZIP
f9b493ac 50 select HAVE_KERNEL_LZ4
6e8699f7 51 select HAVE_KERNEL_LZMA
b1b3f49c 52 select HAVE_KERNEL_LZO
a7f464f3 53 select HAVE_KERNEL_XZ
b1b3f49c
RK
54 select HAVE_KPROBES if !XIP_KERNEL
55 select HAVE_KRETPROBES if (HAVE_KPROBES)
56 select HAVE_MEMBLOCK
171b3f0d 57 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
b1b3f49c 58 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
7ada189f 59 select HAVE_PERF_EVENTS
49863894
WD
60 select HAVE_PERF_REGS
61 select HAVE_PERF_USER_STACK_DUMP
e513f8bf 62 select HAVE_REGS_AND_STACK_ACCESS_API
b1b3f49c 63 select HAVE_SYSCALL_TRACEPOINTS
af1839eb 64 select HAVE_UID16
31c1fc81 65 select HAVE_VIRT_CPU_ACCOUNTING_GEN
da0ec6f7 66 select IRQ_FORCED_THREADING
3d92a71a 67 select KTIME_SCALAR
171b3f0d 68 select MODULES_USE_ELF_REL
84f452b1 69 select NO_BOOTMEM
171b3f0d
RK
70 select OLD_SIGACTION
71 select OLD_SIGSUSPEND3
b1b3f49c
RK
72 select PERF_USE_VMALLOC
73 select RTC_LIB
74 select SYS_SUPPORTS_APM_EMULATION
171b3f0d
RK
75 # Above selects are sorted alphabetically; please add new ones
76 # according to that. Thanks.
1da177e4
LT
77 help
78 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 79 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 80 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 81 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
82 Europe. There is an ARM Linux project with a web page at
83 <http://www.arm.linux.org.uk/>.
84
74facffe
RK
85config ARM_HAS_SG_CHAIN
86 bool
87
4ce63fcd
MS
88config NEED_SG_DMA_LENGTH
89 bool
90
91config ARM_DMA_USE_IOMMU
4ce63fcd 92 bool
b1b3f49c
RK
93 select ARM_HAS_SG_CHAIN
94 select NEED_SG_DMA_LENGTH
4ce63fcd 95
60460abf
SWK
96if ARM_DMA_USE_IOMMU
97
98config ARM_DMA_IOMMU_ALIGNMENT
99 int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
100 range 4 9
101 default 8
102 help
103 DMA mapping framework by default aligns all buffers to the smallest
104 PAGE_SIZE order which is greater than or equal to the requested buffer
105 size. This works well for buffers up to a few hundreds kilobytes, but
106 for larger buffers it just a waste of address space. Drivers which has
107 relatively small addressing window (like 64Mib) might run out of
108 virtual space with just a few allocations.
109
110 With this parameter you can specify the maximum PAGE_SIZE order for
111 DMA IOMMU buffers. Larger buffers will be aligned only to this
112 specified order. The order is expressed as a power of two multiplied
113 by the PAGE_SIZE.
114
115endif
116
0b05da72
HUK
117config MIGHT_HAVE_PCI
118 bool
119
75e7153a
RB
120config SYS_SUPPORTS_APM_EMULATION
121 bool
122
bc581770
LW
123config HAVE_TCM
124 bool
125 select GENERIC_ALLOCATOR
126
e119bfff
RK
127config HAVE_PROC_CPU
128 bool
129
ce816fa8 130config NO_IOPORT_MAP
5ea81769 131 bool
5ea81769 132
1da177e4
LT
133config EISA
134 bool
135 ---help---
136 The Extended Industry Standard Architecture (EISA) bus was
137 developed as an open alternative to the IBM MicroChannel bus.
138
139 The EISA bus provided some of the features of the IBM MicroChannel
140 bus while maintaining backward compatibility with cards made for
141 the older ISA bus. The EISA bus saw limited use between 1988 and
142 1995 when it was made obsolete by the PCI bus.
143
144 Say Y here if you are building a kernel for an EISA-based machine.
145
146 Otherwise, say N.
147
148config SBUS
149 bool
150
f16fb1ec
RK
151config STACKTRACE_SUPPORT
152 bool
153 default y
154
f76e9154
NP
155config HAVE_LATENCYTOP_SUPPORT
156 bool
157 depends on !SMP
158 default y
159
f16fb1ec
RK
160config LOCKDEP_SUPPORT
161 bool
162 default y
163
7ad1bcb2
RK
164config TRACE_IRQFLAGS_SUPPORT
165 bool
166 default y
167
1da177e4
LT
168config RWSEM_XCHGADD_ALGORITHM
169 bool
8a87411b 170 default y
1da177e4 171
f0d1b0b3
DH
172config ARCH_HAS_ILOG2_U32
173 bool
f0d1b0b3
DH
174
175config ARCH_HAS_ILOG2_U64
176 bool
f0d1b0b3 177
4a1b5733
EV
178config ARCH_HAS_BANDGAP
179 bool
180
b89c3b16
AM
181config GENERIC_HWEIGHT
182 bool
183 default y
184
1da177e4
LT
185config GENERIC_CALIBRATE_DELAY
186 bool
187 default y
188
a08b6b79
AV
189config ARCH_MAY_HAVE_PC_FDC
190 bool
191
5ac6da66
CL
192config ZONE_DMA
193 bool
5ac6da66 194
ccd7ab7f
FT
195config NEED_DMA_MAP_STATE
196 def_bool y
197
c7edc9e3
DL
198config ARCH_SUPPORTS_UPROBES
199 def_bool y
200
58af4a24
RH
201config ARCH_HAS_DMA_SET_COHERENT_MASK
202 bool
203
1da177e4
LT
204config GENERIC_ISA_DMA
205 bool
206
1da177e4
LT
207config FIQ
208 bool
209
13a5045d
RH
210config NEED_RET_TO_USER
211 bool
212
034d2f5a
AV
213config ARCH_MTD_XIP
214 bool
215
c760fc19
HC
216config VECTORS_BASE
217 hex
6afd6fae 218 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
219 default DRAM_BASE if REMAP_VECTORS_TO_RAM
220 default 0x00000000
221 help
19accfd3
RK
222 The base address of exception vectors. This must be two pages
223 in size.
c760fc19 224
dc21af99 225config ARM_PATCH_PHYS_VIRT
c1becedc
RK
226 bool "Patch physical to virtual translations at runtime" if EMBEDDED
227 default y
b511d75d 228 depends on !XIP_KERNEL && MMU
dc21af99
RK
229 depends on !ARCH_REALVIEW || !SPARSEMEM
230 help
111e9a5c
RK
231 Patch phys-to-virt and virt-to-phys translation functions at
232 boot and module load time according to the position of the
233 kernel in system memory.
dc21af99 234
111e9a5c 235 This can only be used with non-XIP MMU kernels where the base
daece596 236 of physical memory is at a 16MB boundary.
dc21af99 237
c1becedc
RK
238 Only disable this option if you know that you do not require
239 this feature (eg, building a kernel for a single machine) and
240 you need to shrink the kernel to the minimal size.
dc21af99 241
01464226
RH
242config NEED_MACH_GPIO_H
243 bool
244 help
245 Select this when mach/gpio.h is required to provide special
246 definitions for this platform. The need for mach/gpio.h should
247 be avoided when possible.
248
c334bc15
RH
249config NEED_MACH_IO_H
250 bool
251 help
252 Select this when mach/io.h is required to provide special
253 definitions for this platform. The need for mach/io.h should
254 be avoided when possible.
255
0cdc8b92 256config NEED_MACH_MEMORY_H
1b9f95f8
NP
257 bool
258 help
0cdc8b92
NP
259 Select this when mach/memory.h is required to provide special
260 definitions for this platform. The need for mach/memory.h should
261 be avoided when possible.
dc21af99 262
1b9f95f8 263config PHYS_OFFSET
974c0724 264 hex "Physical address of main memory" if MMU
0cdc8b92 265 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
974c0724 266 default DRAM_BASE if !MMU
111e9a5c 267 help
1b9f95f8
NP
268 Please provide the physical address corresponding to the
269 location of main memory in your system.
cada3c08 270
87e040b6
SG
271config GENERIC_BUG
272 def_bool y
273 depends on BUG
274
1da177e4
LT
275source "init/Kconfig"
276
dc52ddc0
MH
277source "kernel/Kconfig.freezer"
278
1da177e4
LT
279menu "System Type"
280
3c427975
HC
281config MMU
282 bool "MMU-based Paged Memory Management Support"
283 default y
284 help
285 Select if you want MMU-based virtualised addressing space
286 support by paged memory management. If unsure, say 'Y'.
287
ccf50e23
RK
288#
289# The "ARM system type" choice list is ordered alphabetically by option
290# text. Please add new entries in the option alphabetic order.
291#
1da177e4
LT
292choice
293 prompt "ARM system type"
1420b22b
AB
294 default ARCH_VERSATILE if !MMU
295 default ARCH_MULTIPLATFORM if MMU
1da177e4 296
387798b3
RH
297config ARCH_MULTIPLATFORM
298 bool "Allow multiple platforms to be selected"
b1b3f49c 299 depends on MMU
ddb902cc 300 select ARCH_WANT_OPTIONAL_GPIOLIB
42dc836d 301 select ARM_HAS_SG_CHAIN
387798b3
RH
302 select ARM_PATCH_PHYS_VIRT
303 select AUTO_ZRELADDR
6d0add40 304 select CLKSRC_OF
66314223 305 select COMMON_CLK
ddb902cc 306 select GENERIC_CLOCKEVENTS
08d38beb 307 select MIGHT_HAVE_PCI
387798b3 308 select MULTI_IRQ_HANDLER
66314223
DN
309 select SPARSE_IRQ
310 select USE_OF
66314223 311
4af6fee1
DS
312config ARCH_INTEGRATOR
313 bool "ARM Ltd. Integrator family"
b1b3f49c 314 select ARM_AMBA
fe989145 315 select ARM_PATCH_PHYS_VIRT
316 select AUTO_ZRELADDR
a613163d 317 select COMMON_CLK
f9a6aa43 318 select COMMON_CLK_VERSATILE
b1b3f49c 319 select GENERIC_CLOCKEVENTS
9904f793 320 select HAVE_TCM
c5a0adb5 321 select ICST
b1b3f49c
RK
322 select MULTI_IRQ_HANDLER
323 select NEED_MACH_MEMORY_H
f4b8b319 324 select PLAT_VERSATILE
695436e3 325 select SPARSE_IRQ
d7057e1d 326 select USE_OF
2389d501 327 select VERSATILE_FPGA_IRQ
4af6fee1
DS
328 help
329 Support for ARM's Integrator platform.
330
331config ARCH_REALVIEW
332 bool "ARM Ltd. RealView family"
b1b3f49c 333 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 334 select ARM_AMBA
b1b3f49c 335 select ARM_TIMER_SP804
f9a6aa43
LW
336 select COMMON_CLK
337 select COMMON_CLK_VERSATILE
ae30ceac 338 select GENERIC_CLOCKEVENTS
b56ba8aa 339 select GPIO_PL061 if GPIOLIB
b1b3f49c 340 select ICST
0cdc8b92 341 select NEED_MACH_MEMORY_H
b1b3f49c
RK
342 select PLAT_VERSATILE
343 select PLAT_VERSATILE_CLCD
4af6fee1
DS
344 help
345 This enables support for ARM Ltd RealView boards.
346
347config ARCH_VERSATILE
348 bool "ARM Ltd. Versatile family"
b1b3f49c 349 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 350 select ARM_AMBA
b1b3f49c 351 select ARM_TIMER_SP804
4af6fee1 352 select ARM_VIC
6d803ba7 353 select CLKDEV_LOOKUP
b1b3f49c 354 select GENERIC_CLOCKEVENTS
aa3831cf 355 select HAVE_MACH_CLKDEV
c5a0adb5 356 select ICST
f4b8b319 357 select PLAT_VERSATILE
3414ba8c 358 select PLAT_VERSATILE_CLCD
b1b3f49c 359 select PLAT_VERSATILE_CLOCK
2389d501 360 select VERSATILE_FPGA_IRQ
4af6fee1
DS
361 help
362 This enables support for ARM Ltd Versatile board.
363
8fc5ffa0
AV
364config ARCH_AT91
365 bool "Atmel AT91"
f373e8c0 366 select ARCH_REQUIRE_GPIOLIB
bd602995 367 select CLKDEV_LOOKUP
e261501d 368 select IRQ_DOMAIN
1ac02d79 369 select NEED_MACH_IO_H if PCCARD
6732ae5c
JCPV
370 select PINCTRL
371 select PINCTRL_AT91 if USE_OF
4af6fee1 372 help
929e994f
NF
373 This enables support for systems based on Atmel
374 AT91RM9200 and AT91SAM9* processors.
4af6fee1 375
93e22567
RK
376config ARCH_CLPS711X
377 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
a3b8d4a5 378 select ARCH_REQUIRE_GPIOLIB
ea7d1bc9 379 select AUTO_ZRELADDR
c99f72ad 380 select CLKSRC_MMIO
93e22567
RK
381 select COMMON_CLK
382 select CPU_ARM720T
4a8355c4 383 select GENERIC_CLOCKEVENTS
6597619f 384 select MFD_SYSCON
93e22567
RK
385 help
386 Support for Cirrus Logic 711x/721x/731x based boards.
387
788c9700
RK
388config ARCH_GEMINI
389 bool "Cortina Systems Gemini"
788c9700 390 select ARCH_REQUIRE_GPIOLIB
f3372c01 391 select CLKSRC_MMIO
b1b3f49c 392 select CPU_FA526
f3372c01 393 select GENERIC_CLOCKEVENTS
788c9700
RK
394 help
395 Support for the Cortina Systems Gemini family SoCs
396
1da177e4
LT
397config ARCH_EBSA110
398 bool "EBSA-110"
b1b3f49c 399 select ARCH_USES_GETTIMEOFFSET
c750815e 400 select CPU_SA110
f7e68bbf 401 select ISA
c334bc15 402 select NEED_MACH_IO_H
0cdc8b92 403 select NEED_MACH_MEMORY_H
ce816fa8 404 select NO_IOPORT_MAP
1da177e4
LT
405 help
406 This is an evaluation board for the StrongARM processor available
f6c8965a 407 from Digital. It has limited hardware on-board, including an
1da177e4
LT
408 Ethernet interface, two PCMCIA sockets, two serial ports and a
409 parallel port.
410
6d85e2b0
UKK
411config ARCH_EFM32
412 bool "Energy Micro efm32"
413 depends on !MMU
414 select ARCH_REQUIRE_GPIOLIB
415 select ARM_NVIC
51aaf81f 416 select AUTO_ZRELADDR
6d85e2b0
UKK
417 select CLKSRC_OF
418 select COMMON_CLK
419 select CPU_V7M
420 select GENERIC_CLOCKEVENTS
421 select NO_DMA
ce816fa8 422 select NO_IOPORT_MAP
6d85e2b0
UKK
423 select SPARSE_IRQ
424 select USE_OF
425 help
426 Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
427 processors.
428
e7736d47
LB
429config ARCH_EP93XX
430 bool "EP93xx-based"
b1b3f49c
RK
431 select ARCH_HAS_HOLES_MEMORYMODEL
432 select ARCH_REQUIRE_GPIOLIB
433 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
434 select ARM_AMBA
435 select ARM_VIC
6d803ba7 436 select CLKDEV_LOOKUP
b1b3f49c 437 select CPU_ARM920T
5725aeae 438 select NEED_MACH_MEMORY_H
e7736d47
LB
439 help
440 This enables support for the Cirrus EP93xx series of CPUs.
441
1da177e4
LT
442config ARCH_FOOTBRIDGE
443 bool "FootBridge"
c750815e 444 select CPU_SA110
1da177e4 445 select FOOTBRIDGE
4e8d7637 446 select GENERIC_CLOCKEVENTS
d0ee9f40 447 select HAVE_IDE
8ef6e620 448 select NEED_MACH_IO_H if !MMU
0cdc8b92 449 select NEED_MACH_MEMORY_H
f999b8bd
MM
450 help
451 Support for systems based on the DC21285 companion chip
452 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 453
4af6fee1
DS
454config ARCH_NETX
455 bool "Hilscher NetX based"
b1b3f49c 456 select ARM_VIC
234b6ced 457 select CLKSRC_MMIO
c750815e 458 select CPU_ARM926T
2fcfe6b8 459 select GENERIC_CLOCKEVENTS
f999b8bd 460 help
4af6fee1
DS
461 This enables support for systems based on the Hilscher NetX Soc
462
3b938be6
RK
463config ARCH_IOP13XX
464 bool "IOP13xx-based"
465 depends on MMU
b1b3f49c 466 select CPU_XSC3
0cdc8b92 467 select NEED_MACH_MEMORY_H
13a5045d 468 select NEED_RET_TO_USER
b1b3f49c
RK
469 select PCI
470 select PLAT_IOP
471 select VMSPLIT_1G
37ebbcff 472 select SPARSE_IRQ
3b938be6
RK
473 help
474 Support for Intel's IOP13XX (XScale) family of processors.
475
3f7e5815
LB
476config ARCH_IOP32X
477 bool "IOP32x-based"
a4f7e763 478 depends on MMU
b1b3f49c 479 select ARCH_REQUIRE_GPIOLIB
c750815e 480 select CPU_XSCALE
e9004f50 481 select GPIO_IOP
13a5045d 482 select NEED_RET_TO_USER
f7e68bbf 483 select PCI
b1b3f49c 484 select PLAT_IOP
f999b8bd 485 help
3f7e5815
LB
486 Support for Intel's 80219 and IOP32X (XScale) family of
487 processors.
488
489config ARCH_IOP33X
490 bool "IOP33x-based"
491 depends on MMU
b1b3f49c 492 select ARCH_REQUIRE_GPIOLIB
c750815e 493 select CPU_XSCALE
e9004f50 494 select GPIO_IOP
13a5045d 495 select NEED_RET_TO_USER
3f7e5815 496 select PCI
b1b3f49c 497 select PLAT_IOP
3f7e5815
LB
498 help
499 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 500
3b938be6
RK
501config ARCH_IXP4XX
502 bool "IXP4xx-based"
a4f7e763 503 depends on MMU
58af4a24 504 select ARCH_HAS_DMA_SET_COHERENT_MASK
b1b3f49c 505 select ARCH_REQUIRE_GPIOLIB
51aaf81f 506 select ARCH_SUPPORTS_BIG_ENDIAN
234b6ced 507 select CLKSRC_MMIO
c750815e 508 select CPU_XSCALE
b1b3f49c 509 select DMABOUNCE if PCI
3b938be6 510 select GENERIC_CLOCKEVENTS
0b05da72 511 select MIGHT_HAVE_PCI
c334bc15 512 select NEED_MACH_IO_H
9296d94d 513 select USB_EHCI_BIG_ENDIAN_DESC
171b3f0d 514 select USB_EHCI_BIG_ENDIAN_MMIO
c4713074 515 help
3b938be6 516 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 517
edabd38e
SB
518config ARCH_DOVE
519 bool "Marvell Dove"
edabd38e 520 select ARCH_REQUIRE_GPIOLIB
756b2531 521 select CPU_PJ4
edabd38e 522 select GENERIC_CLOCKEVENTS
0f81bd43 523 select MIGHT_HAVE_PCI
171b3f0d 524 select MVEBU_MBUS
9139acd1
SH
525 select PINCTRL
526 select PINCTRL_DOVE
abcda1dc 527 select PLAT_ORION_LEGACY
edabd38e
SB
528 help
529 Support for the Marvell Dove SoC 88AP510
530
651c74c7
SB
531config ARCH_KIRKWOOD
532 bool "Marvell Kirkwood"
a8865655 533 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 534 select CPU_FEROCEON
651c74c7 535 select GENERIC_CLOCKEVENTS
171b3f0d 536 select MVEBU_MBUS
b1b3f49c 537 select PCI
1dc831bf 538 select PCI_QUIRKS
f9e75922
AL
539 select PINCTRL
540 select PINCTRL_KIRKWOOD
abcda1dc 541 select PLAT_ORION_LEGACY
651c74c7
SB
542 help
543 Support for the following Marvell Kirkwood series SoCs:
544 88F6180, 88F6192 and 88F6281.
545
794d15b2
SS
546config ARCH_MV78XX0
547 bool "Marvell MV78xx0"
a8865655 548 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 549 select CPU_FEROCEON
794d15b2 550 select GENERIC_CLOCKEVENTS
171b3f0d 551 select MVEBU_MBUS
b1b3f49c 552 select PCI
abcda1dc 553 select PLAT_ORION_LEGACY
794d15b2
SS
554 help
555 Support for the following Marvell MV78xx0 series SoCs:
556 MV781x0, MV782x0.
557
9dd0b194 558config ARCH_ORION5X
585cf175
TP
559 bool "Marvell Orion"
560 depends on MMU
a8865655 561 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 562 select CPU_FEROCEON
51cbff1d 563 select GENERIC_CLOCKEVENTS
171b3f0d 564 select MVEBU_MBUS
b1b3f49c 565 select PCI
abcda1dc 566 select PLAT_ORION_LEGACY
585cf175 567 help
9dd0b194 568 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 569 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 570 Orion-2 (5281), Orion-1-90 (6183).
585cf175 571
788c9700 572config ARCH_MMP
2f7e8fae 573 bool "Marvell PXA168/910/MMP2"
788c9700 574 depends on MMU
788c9700 575 select ARCH_REQUIRE_GPIOLIB
6d803ba7 576 select CLKDEV_LOOKUP
b1b3f49c 577 select GENERIC_ALLOCATOR
788c9700 578 select GENERIC_CLOCKEVENTS
157d2644 579 select GPIO_PXA
c24b3114 580 select IRQ_DOMAIN
0f374561 581 select MULTI_IRQ_HANDLER
7c8f86a4 582 select PINCTRL
788c9700 583 select PLAT_PXA
0bd86961 584 select SPARSE_IRQ
788c9700 585 help
2f7e8fae 586 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
587
588config ARCH_KS8695
589 bool "Micrel/Kendin KS8695"
98830bc9 590 select ARCH_REQUIRE_GPIOLIB
c7e783d6 591 select CLKSRC_MMIO
b1b3f49c 592 select CPU_ARM922T
c7e783d6 593 select GENERIC_CLOCKEVENTS
b1b3f49c 594 select NEED_MACH_MEMORY_H
788c9700
RK
595 help
596 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
597 System-on-Chip devices.
598
788c9700
RK
599config ARCH_W90X900
600 bool "Nuvoton W90X900 CPU"
c52d3d68 601 select ARCH_REQUIRE_GPIOLIB
6d803ba7 602 select CLKDEV_LOOKUP
6fa5d5f7 603 select CLKSRC_MMIO
b1b3f49c 604 select CPU_ARM926T
58b5369e 605 select GENERIC_CLOCKEVENTS
788c9700 606 help
a8bc4ead 607 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
608 At present, the w90x900 has been renamed nuc900, regarding
609 the ARM series product line, you can login the following
610 link address to know more.
611
612 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
613 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 614
93e22567
RK
615config ARCH_LPC32XX
616 bool "NXP LPC32XX"
617 select ARCH_REQUIRE_GPIOLIB
618 select ARM_AMBA
619 select CLKDEV_LOOKUP
620 select CLKSRC_MMIO
621 select CPU_ARM926T
622 select GENERIC_CLOCKEVENTS
623 select HAVE_IDE
93e22567
RK
624 select USE_OF
625 help
626 Support for the NXP LPC32XX family of processors
627
1da177e4 628config ARCH_PXA
2c8086a5 629 bool "PXA2xx/PXA3xx-based"
a4f7e763 630 depends on MMU
b1b3f49c
RK
631 select ARCH_MTD_XIP
632 select ARCH_REQUIRE_GPIOLIB
633 select ARM_CPU_SUSPEND if PM
634 select AUTO_ZRELADDR
6d803ba7 635 select CLKDEV_LOOKUP
234b6ced 636 select CLKSRC_MMIO
981d0f39 637 select GENERIC_CLOCKEVENTS
157d2644 638 select GPIO_PXA
d0ee9f40 639 select HAVE_IDE
b1b3f49c 640 select MULTI_IRQ_HANDLER
b1b3f49c
RK
641 select PLAT_PXA
642 select SPARSE_IRQ
f999b8bd 643 help
2c8086a5 644 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 645
8fc1b0f8
KG
646config ARCH_MSM
647 bool "Qualcomm MSM (non-multiplatform)"
923a081c 648 select ARCH_REQUIRE_GPIOLIB
8cc7f533 649 select COMMON_CLK
b1b3f49c 650 select GENERIC_CLOCKEVENTS
49cbe786 651 help
4b53eb4f
DW
652 Support for Qualcomm MSM/QSD based systems. This runs on the
653 apps processor of the MSM/QSD and depends on a shared memory
654 interface to the modem processor which runs the baseband
655 stack and controls some vital subsystems
656 (clock and power control, etc).
49cbe786 657
bf98c1ea 658config ARCH_SHMOBILE_LEGACY
0d9fd616 659 bool "Renesas ARM SoCs (non-multiplatform)"
bf98c1ea 660 select ARCH_SHMOBILE
69469995 661 select ARM_PATCH_PHYS_VIRT
5e93c6b4 662 select CLKDEV_LOOKUP
b1b3f49c 663 select GENERIC_CLOCKEVENTS
4c3ffffd 664 select HAVE_ARM_SCU if SMP
a894fcc2 665 select HAVE_ARM_TWD if SMP
aa3831cf 666 select HAVE_MACH_CLKDEV
3b55658a 667 select HAVE_SMP
ce5ea9f3 668 select MIGHT_HAVE_CACHE_L2X0
60f1435c 669 select MULTI_IRQ_HANDLER
ce816fa8 670 select NO_IOPORT_MAP
2cd3c927 671 select PINCTRL
b1b3f49c
RK
672 select PM_GENERIC_DOMAINS if PM
673 select SPARSE_IRQ
c793c1b0 674 help
0d9fd616
LP
675 Support for Renesas ARM SoC platforms using a non-multiplatform
676 kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
677 and RZ families.
c793c1b0 678
1da177e4
LT
679config ARCH_RPC
680 bool "RiscPC"
681 select ARCH_ACORN
a08b6b79 682 select ARCH_MAY_HAVE_PC_FDC
07f841b7 683 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 684 select ARCH_USES_GETTIMEOFFSET
fa04e209 685 select CPU_SA110
b1b3f49c 686 select FIQ
d0ee9f40 687 select HAVE_IDE
b1b3f49c
RK
688 select HAVE_PATA_PLATFORM
689 select ISA_DMA_API
c334bc15 690 select NEED_MACH_IO_H
0cdc8b92 691 select NEED_MACH_MEMORY_H
ce816fa8 692 select NO_IOPORT_MAP
b4811bac 693 select VIRT_TO_BUS
1da177e4
LT
694 help
695 On the Acorn Risc-PC, Linux can support the internal IDE disk and
696 CD-ROM interface, serial and parallel port, and the floppy drive.
697
698config ARCH_SA1100
699 bool "SA1100-based"
b1b3f49c
RK
700 select ARCH_MTD_XIP
701 select ARCH_REQUIRE_GPIOLIB
702 select ARCH_SPARSEMEM_ENABLE
703 select CLKDEV_LOOKUP
704 select CLKSRC_MMIO
1937f5b9 705 select CPU_FREQ
b1b3f49c 706 select CPU_SA1100
3e238be2 707 select GENERIC_CLOCKEVENTS
d0ee9f40 708 select HAVE_IDE
b1b3f49c 709 select ISA
0cdc8b92 710 select NEED_MACH_MEMORY_H
375dec92 711 select SPARSE_IRQ
f999b8bd
MM
712 help
713 Support for StrongARM 11x0 based boards.
1da177e4 714
b130d5c2
KK
715config ARCH_S3C24XX
716 bool "Samsung S3C24XX SoCs"
53650430 717 select ARCH_REQUIRE_GPIOLIB
335cce74 718 select ATAGS
b1b3f49c 719 select CLKDEV_LOOKUP
4280506a 720 select CLKSRC_SAMSUNG_PWM
7f78b6eb 721 select GENERIC_CLOCKEVENTS
880cf071 722 select GPIO_SAMSUNG
20676c15 723 select HAVE_S3C2410_I2C if I2C
b130d5c2 724 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 725 select HAVE_S3C_RTC if RTC_CLASS
17453dd2 726 select MULTI_IRQ_HANDLER
c334bc15 727 select NEED_MACH_IO_H
cd8dc7ae 728 select SAMSUNG_ATAGS
1da177e4 729 help
b130d5c2
KK
730 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
731 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
732 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
733 Samsung SMDK2410 development board (and derivatives).
63b1f51b 734
a08ab637
BD
735config ARCH_S3C64XX
736 bool "Samsung S3C64XX"
b1b3f49c 737 select ARCH_REQUIRE_GPIOLIB
1db0287a 738 select ARM_AMBA
89f0ce72 739 select ARM_VIC
335cce74 740 select ATAGS
b1b3f49c 741 select CLKDEV_LOOKUP
4280506a 742 select CLKSRC_SAMSUNG_PWM
ccecba3c 743 select COMMON_CLK_SAMSUNG
70bacadb 744 select CPU_V6K
04a49b71 745 select GENERIC_CLOCKEVENTS
880cf071 746 select GPIO_SAMSUNG
b1b3f49c
RK
747 select HAVE_S3C2410_I2C if I2C
748 select HAVE_S3C2410_WATCHDOG if WATCHDOG
6700397a 749 select HAVE_TCM
ce816fa8 750 select NO_IOPORT_MAP
b1b3f49c 751 select PLAT_SAMSUNG
4ab75a3f 752 select PM_GENERIC_DOMAINS if PM
b1b3f49c
RK
753 select S3C_DEV_NAND
754 select S3C_GPIO_TRACK
cd8dc7ae 755 select SAMSUNG_ATAGS
6e2d9e93 756 select SAMSUNG_WAKEMASK
88f59738 757 select SAMSUNG_WDT_RESET
a08ab637
BD
758 help
759 Samsung S3C64XX series based systems
760
7c6337e2
KH
761config ARCH_DAVINCI
762 bool "TI DaVinci"
b1b3f49c 763 select ARCH_HAS_HOLES_MEMORYMODEL
dce1115b 764 select ARCH_REQUIRE_GPIOLIB
6d803ba7 765 select CLKDEV_LOOKUP
20e9969b 766 select GENERIC_ALLOCATOR
b1b3f49c 767 select GENERIC_CLOCKEVENTS
dc7ad3b3 768 select GENERIC_IRQ_CHIP
b1b3f49c 769 select HAVE_IDE
3ad7a42d 770 select TI_PRIV_EDMA
689e331f 771 select USE_OF
b1b3f49c 772 select ZONE_DMA
7c6337e2
KH
773 help
774 Support for TI's DaVinci platform.
775
a0694861
TL
776config ARCH_OMAP1
777 bool "TI OMAP1"
00a36698 778 depends on MMU
9af915da 779 select ARCH_HAS_HOLES_MEMORYMODEL
a0694861 780 select ARCH_OMAP
21f47fbc 781 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 782 select CLKDEV_LOOKUP
d6e15d78 783 select CLKSRC_MMIO
b1b3f49c 784 select GENERIC_CLOCKEVENTS
a0694861 785 select GENERIC_IRQ_CHIP
a0694861
TL
786 select HAVE_IDE
787 select IRQ_DOMAIN
788 select NEED_MACH_IO_H if PCCARD
789 select NEED_MACH_MEMORY_H
21f47fbc 790 help
a0694861 791 Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
02c981c0 792
1da177e4
LT
793endchoice
794
387798b3
RH
795menu "Multiple platform selection"
796 depends on ARCH_MULTIPLATFORM
797
798comment "CPU Core family selection"
799
f8afae40
AB
800config ARCH_MULTI_V4
801 bool "ARMv4 based platforms (FA526)"
802 depends on !ARCH_MULTI_V6_V7
803 select ARCH_MULTI_V4_V5
804 select CPU_FA526
805
387798b3
RH
806config ARCH_MULTI_V4T
807 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
387798b3 808 depends on !ARCH_MULTI_V6_V7
b1b3f49c 809 select ARCH_MULTI_V4_V5
24e860fb
AB
810 select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
811 CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
812 CPU_ARM925T || CPU_ARM940T)
387798b3
RH
813
814config ARCH_MULTI_V5
815 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
387798b3 816 depends on !ARCH_MULTI_V6_V7
b1b3f49c 817 select ARCH_MULTI_V4_V5
12567bbd 818 select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
24e860fb
AB
819 CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
820 CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
387798b3
RH
821
822config ARCH_MULTI_V4_V5
823 bool
824
825config ARCH_MULTI_V6
8dda05cc 826 bool "ARMv6 based platforms (ARM11)"
387798b3 827 select ARCH_MULTI_V6_V7
42f4754a 828 select CPU_V6K
387798b3
RH
829
830config ARCH_MULTI_V7
8dda05cc 831 bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
387798b3
RH
832 default y
833 select ARCH_MULTI_V6_V7
b1b3f49c 834 select CPU_V7
90bc8ac7 835 select HAVE_SMP
387798b3
RH
836
837config ARCH_MULTI_V6_V7
838 bool
9352b05b 839 select MIGHT_HAVE_CACHE_L2X0
387798b3
RH
840
841config ARCH_MULTI_CPU_AUTO
842 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
843 select ARCH_MULTI_V5
844
845endmenu
846
05e2a3de
RH
847config ARCH_VIRT
848 bool "Dummy Virtual Machine" if ARCH_MULTI_V7
4b8b5f25 849 select ARM_AMBA
05e2a3de 850 select ARM_GIC
05e2a3de 851 select ARM_PSCI
4b8b5f25 852 select HAVE_ARM_ARCH_TIMER
05e2a3de 853
ccf50e23
RK
854#
855# This is sorted alphabetically by mach-* pathname. However, plat-*
856# Kconfigs may be included either alphabetically (according to the
857# plat- suffix) or along side the corresponding mach-* source.
858#
3e93a22b
GC
859source "arch/arm/mach-mvebu/Kconfig"
860
95b8f20f
RK
861source "arch/arm/mach-at91/Kconfig"
862
1d22924e
AB
863source "arch/arm/mach-axxia/Kconfig"
864
8ac49e04
CD
865source "arch/arm/mach-bcm/Kconfig"
866
1c37fa10
SH
867source "arch/arm/mach-berlin/Kconfig"
868
1da177e4
LT
869source "arch/arm/mach-clps711x/Kconfig"
870
d94f944e
AV
871source "arch/arm/mach-cns3xxx/Kconfig"
872
95b8f20f
RK
873source "arch/arm/mach-davinci/Kconfig"
874
875source "arch/arm/mach-dove/Kconfig"
876
e7736d47
LB
877source "arch/arm/mach-ep93xx/Kconfig"
878
1da177e4
LT
879source "arch/arm/mach-footbridge/Kconfig"
880
59d3a193
PZ
881source "arch/arm/mach-gemini/Kconfig"
882
387798b3
RH
883source "arch/arm/mach-highbank/Kconfig"
884
389ee0c2
HZ
885source "arch/arm/mach-hisi/Kconfig"
886
1da177e4
LT
887source "arch/arm/mach-integrator/Kconfig"
888
3f7e5815
LB
889source "arch/arm/mach-iop32x/Kconfig"
890
891source "arch/arm/mach-iop33x/Kconfig"
1da177e4 892
285f5fa7
DW
893source "arch/arm/mach-iop13xx/Kconfig"
894
1da177e4
LT
895source "arch/arm/mach-ixp4xx/Kconfig"
896
828989ad
SS
897source "arch/arm/mach-keystone/Kconfig"
898
95b8f20f
RK
899source "arch/arm/mach-kirkwood/Kconfig"
900
901source "arch/arm/mach-ks8695/Kconfig"
902
95b8f20f
RK
903source "arch/arm/mach-msm/Kconfig"
904
17723fd3
JJ
905source "arch/arm/mach-moxart/Kconfig"
906
794d15b2
SS
907source "arch/arm/mach-mv78xx0/Kconfig"
908
3995eb82 909source "arch/arm/mach-imx/Kconfig"
1da177e4 910
1d3f33d5
SG
911source "arch/arm/mach-mxs/Kconfig"
912
95b8f20f 913source "arch/arm/mach-netx/Kconfig"
49cbe786 914
95b8f20f 915source "arch/arm/mach-nomadik/Kconfig"
95b8f20f 916
9851ca57
DT
917source "arch/arm/mach-nspire/Kconfig"
918
d48af15e
TL
919source "arch/arm/plat-omap/Kconfig"
920
921source "arch/arm/mach-omap1/Kconfig"
1da177e4 922
1dbae815
TL
923source "arch/arm/mach-omap2/Kconfig"
924
9dd0b194 925source "arch/arm/mach-orion5x/Kconfig"
585cf175 926
387798b3
RH
927source "arch/arm/mach-picoxcell/Kconfig"
928
95b8f20f
RK
929source "arch/arm/mach-pxa/Kconfig"
930source "arch/arm/plat-pxa/Kconfig"
585cf175 931
95b8f20f
RK
932source "arch/arm/mach-mmp/Kconfig"
933
8fc1b0f8
KG
934source "arch/arm/mach-qcom/Kconfig"
935
95b8f20f
RK
936source "arch/arm/mach-realview/Kconfig"
937
d63dc051
HS
938source "arch/arm/mach-rockchip/Kconfig"
939
95b8f20f 940source "arch/arm/mach-sa1100/Kconfig"
edabd38e 941
387798b3
RH
942source "arch/arm/mach-socfpga/Kconfig"
943
a7ed099f 944source "arch/arm/mach-spear/Kconfig"
a21765a7 945
65ebcc11
SK
946source "arch/arm/mach-sti/Kconfig"
947
85fd6d63 948source "arch/arm/mach-s3c24xx/Kconfig"
1da177e4 949
431107ea 950source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637 951
170f4e42
KK
952source "arch/arm/mach-s5pv210/Kconfig"
953
83014579 954source "arch/arm/mach-exynos/Kconfig"
e509b289 955source "arch/arm/plat-samsung/Kconfig"
cc0e72b8 956
882d01f9 957source "arch/arm/mach-shmobile/Kconfig"
52c543f9 958
3b52634f
MR
959source "arch/arm/mach-sunxi/Kconfig"
960
156a0997
BS
961source "arch/arm/mach-prima2/Kconfig"
962
c5f80065
EG
963source "arch/arm/mach-tegra/Kconfig"
964
95b8f20f 965source "arch/arm/mach-u300/Kconfig"
1da177e4 966
95b8f20f 967source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
968
969source "arch/arm/mach-versatile/Kconfig"
970
ceade897 971source "arch/arm/mach-vexpress/Kconfig"
420c34e4 972source "arch/arm/plat-versatile/Kconfig"
ceade897 973
6f35f9a9
TP
974source "arch/arm/mach-vt8500/Kconfig"
975
7ec80ddf 976source "arch/arm/mach-w90x900/Kconfig"
977
9a45eb69
JC
978source "arch/arm/mach-zynq/Kconfig"
979
1da177e4
LT
980# Definitions to make life easier
981config ARCH_ACORN
982 bool
983
7ae1f7ec
LB
984config PLAT_IOP
985 bool
469d3044 986 select GENERIC_CLOCKEVENTS
7ae1f7ec 987
69b02f6a
LB
988config PLAT_ORION
989 bool
bfe45e0b 990 select CLKSRC_MMIO
b1b3f49c 991 select COMMON_CLK
dc7ad3b3 992 select GENERIC_IRQ_CHIP
278b45b0 993 select IRQ_DOMAIN
69b02f6a 994
abcda1dc
TP
995config PLAT_ORION_LEGACY
996 bool
997 select PLAT_ORION
998
bd5ce433
EM
999config PLAT_PXA
1000 bool
1001
f4b8b319
RK
1002config PLAT_VERSATILE
1003 bool
1004
e3887714
RK
1005config ARM_TIMER_SP804
1006 bool
bfe45e0b 1007 select CLKSRC_MMIO
7a0eca71 1008 select CLKSRC_OF if OF
e3887714 1009
d9a1beaa
AC
1010source "arch/arm/firmware/Kconfig"
1011
1da177e4
LT
1012source arch/arm/mm/Kconfig
1013
afe4b25e 1014config IWMMXT
d93003e8
SH
1015 bool "Enable iWMMXt support"
1016 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1017 default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
afe4b25e
LB
1018 help
1019 Enable support for iWMMXt context switching at run time if
1020 running on a CPU that supports it.
1021
52108641 1022config MULTI_IRQ_HANDLER
1023 bool
1024 help
1025 Allow each machine to specify it's own IRQ handler at run time.
1026
3b93e7b0
HC
1027if !MMU
1028source "arch/arm/Kconfig-nommu"
1029endif
1030
3e0a07f8
GC
1031config PJ4B_ERRATA_4742
1032 bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
1033 depends on CPU_PJ4B && MACH_ARMADA_370
1034 default y
1035 help
1036 When coming out of either a Wait for Interrupt (WFI) or a Wait for
1037 Event (WFE) IDLE states, a specific timing sensitivity exists between
1038 the retiring WFI/WFE instructions and the newly issued subsequent
1039 instructions. This sensitivity can result in a CPU hang scenario.
1040 Workaround:
1041 The software must insert either a Data Synchronization Barrier (DSB)
1042 or Data Memory Barrier (DMB) command immediately after the WFI/WFE
1043 instruction
1044
f0c4b8d6
WD
1045config ARM_ERRATA_326103
1046 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1047 depends on CPU_V6
1048 help
1049 Executing a SWP instruction to read-only memory does not set bit 11
1050 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1051 treat the access as a read, preventing a COW from occurring and
1052 causing the faulting task to livelock.
1053
9cba3ccc
CM
1054config ARM_ERRATA_411920
1055 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1056 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1057 help
1058 Invalidation of the Instruction Cache operation can
1059 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1060 It does not affect the MPCore. This option enables the ARM Ltd.
1061 recommended workaround.
1062
7ce236fc
CM
1063config ARM_ERRATA_430973
1064 bool "ARM errata: Stale prediction on replaced interworking branch"
1065 depends on CPU_V7
1066 help
1067 This option enables the workaround for the 430973 Cortex-A8
1068 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1069 interworking branch is replaced with another code sequence at the
1070 same virtual address, whether due to self-modifying code or virtual
1071 to physical address re-mapping, Cortex-A8 does not recover from the
1072 stale interworking branch prediction. This results in Cortex-A8
1073 executing the new code sequence in the incorrect ARM or Thumb state.
1074 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1075 and also flushes the branch target cache at every context switch.
1076 Note that setting specific bits in the ACTLR register may not be
1077 available in non-secure mode.
1078
855c551f
CM
1079config ARM_ERRATA_458693
1080 bool "ARM errata: Processor deadlock when a false hazard is created"
1081 depends on CPU_V7
62e4d357 1082 depends on !ARCH_MULTIPLATFORM
855c551f
CM
1083 help
1084 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1085 erratum. For very specific sequences of memory operations, it is
1086 possible for a hazard condition intended for a cache line to instead
1087 be incorrectly associated with a different cache line. This false
1088 hazard might then cause a processor deadlock. The workaround enables
1089 the L1 caching of the NEON accesses and disables the PLD instruction
1090 in the ACTLR register. Note that setting specific bits in the ACTLR
1091 register may not be available in non-secure mode.
1092
0516e464
CM
1093config ARM_ERRATA_460075
1094 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1095 depends on CPU_V7
62e4d357 1096 depends on !ARCH_MULTIPLATFORM
0516e464
CM
1097 help
1098 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1099 erratum. Any asynchronous access to the L2 cache may encounter a
1100 situation in which recent store transactions to the L2 cache are lost
1101 and overwritten with stale memory contents from external memory. The
1102 workaround disables the write-allocate mode for the L2 cache via the
1103 ACTLR register. Note that setting specific bits in the ACTLR register
1104 may not be available in non-secure mode.
1105
9f05027c
WD
1106config ARM_ERRATA_742230
1107 bool "ARM errata: DMB operation may be faulty"
1108 depends on CPU_V7 && SMP
62e4d357 1109 depends on !ARCH_MULTIPLATFORM
9f05027c
WD
1110 help
1111 This option enables the workaround for the 742230 Cortex-A9
1112 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1113 between two write operations may not ensure the correct visibility
1114 ordering of the two writes. This workaround sets a specific bit in
1115 the diagnostic register of the Cortex-A9 which causes the DMB
1116 instruction to behave as a DSB, ensuring the correct behaviour of
1117 the two writes.
1118
a672e99b
WD
1119config ARM_ERRATA_742231
1120 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1121 depends on CPU_V7 && SMP
62e4d357 1122 depends on !ARCH_MULTIPLATFORM
a672e99b
WD
1123 help
1124 This option enables the workaround for the 742231 Cortex-A9
1125 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1126 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1127 accessing some data located in the same cache line, may get corrupted
1128 data due to bad handling of the address hazard when the line gets
1129 replaced from one of the CPUs at the same time as another CPU is
1130 accessing it. This workaround sets specific bits in the diagnostic
1131 register of the Cortex-A9 which reduces the linefill issuing
1132 capabilities of the processor.
1133
69155794
JM
1134config ARM_ERRATA_643719
1135 bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
1136 depends on CPU_V7 && SMP
1137 help
1138 This option enables the workaround for the 643719 Cortex-A9 (prior to
1139 r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
1140 register returns zero when it should return one. The workaround
1141 corrects this value, ensuring cache maintenance operations which use
1142 it behave as intended and avoiding data corruption.
1143
cdf357f1
WD
1144config ARM_ERRATA_720789
1145 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
e66dc745 1146 depends on CPU_V7
cdf357f1
WD
1147 help
1148 This option enables the workaround for the 720789 Cortex-A9 (prior to
1149 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1150 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1151 As a consequence of this erratum, some TLB entries which should be
1152 invalidated are not, resulting in an incoherency in the system page
1153 tables. The workaround changes the TLB flushing routines to invalidate
1154 entries regardless of the ASID.
475d92fc
WD
1155
1156config ARM_ERRATA_743622
1157 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1158 depends on CPU_V7
62e4d357 1159 depends on !ARCH_MULTIPLATFORM
475d92fc
WD
1160 help
1161 This option enables the workaround for the 743622 Cortex-A9
efbc74ac 1162 (r2p*) erratum. Under very rare conditions, a faulty
475d92fc
WD
1163 optimisation in the Cortex-A9 Store Buffer may lead to data
1164 corruption. This workaround sets a specific bit in the diagnostic
1165 register of the Cortex-A9 which disables the Store Buffer
1166 optimisation, preventing the defect from occurring. This has no
1167 visible impact on the overall performance or power consumption of the
1168 processor.
1169
9a27c27c
WD
1170config ARM_ERRATA_751472
1171 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
ba90c516 1172 depends on CPU_V7
62e4d357 1173 depends on !ARCH_MULTIPLATFORM
9a27c27c
WD
1174 help
1175 This option enables the workaround for the 751472 Cortex-A9 (prior
1176 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1177 completion of a following broadcasted operation if the second
1178 operation is received by a CPU before the ICIALLUIS has completed,
1179 potentially leading to corrupted entries in the cache or TLB.
1180
fcbdc5fe
WD
1181config ARM_ERRATA_754322
1182 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1183 depends on CPU_V7
1184 help
1185 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1186 r3p*) erratum. A speculative memory access may cause a page table walk
1187 which starts prior to an ASID switch but completes afterwards. This
1188 can populate the micro-TLB with a stale entry which may be hit with
1189 the new ASID. This workaround places two dsb instructions in the mm
1190 switching code so that no page table walks can cross the ASID switch.
1191
5dab26af
WD
1192config ARM_ERRATA_754327
1193 bool "ARM errata: no automatic Store Buffer drain"
1194 depends on CPU_V7 && SMP
1195 help
1196 This option enables the workaround for the 754327 Cortex-A9 (prior to
1197 r2p0) erratum. The Store Buffer does not have any automatic draining
1198 mechanism and therefore a livelock may occur if an external agent
1199 continuously polls a memory location waiting to observe an update.
1200 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1201 written polling loops from denying visibility of updates to memory.
1202
145e10e1
CM
1203config ARM_ERRATA_364296
1204 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
fd832478 1205 depends on CPU_V6
145e10e1
CM
1206 help
1207 This options enables the workaround for the 364296 ARM1136
1208 r0p2 erratum (possible cache data corruption with
1209 hit-under-miss enabled). It sets the undocumented bit 31 in
1210 the auxiliary control register and the FI bit in the control
1211 register, thus disabling hit-under-miss without putting the
1212 processor into full low interrupt latency mode. ARM11MPCore
1213 is not affected.
1214
f630c1bd
WD
1215config ARM_ERRATA_764369
1216 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1217 depends on CPU_V7 && SMP
1218 help
1219 This option enables the workaround for erratum 764369
1220 affecting Cortex-A9 MPCore with two or more processors (all
1221 current revisions). Under certain timing circumstances, a data
1222 cache line maintenance operation by MVA targeting an Inner
1223 Shareable memory region may fail to proceed up to either the
1224 Point of Coherency or to the Point of Unification of the
1225 system. This workaround adds a DSB instruction before the
1226 relevant cache maintenance functions and sets a specific bit
1227 in the diagnostic control register of the SCU.
1228
7253b85c
SH
1229config ARM_ERRATA_775420
1230 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1231 depends on CPU_V7
1232 help
1233 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1234 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1235 operation aborts with MMU exception, it might cause the processor
1236 to deadlock. This workaround puts DSB before executing ISB if
1237 an abort may occur on cache maintenance.
1238
93dc6887
CM
1239config ARM_ERRATA_798181
1240 bool "ARM errata: TLBI/DSB failure on Cortex-A15"
1241 depends on CPU_V7 && SMP
1242 help
1243 On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
1244 adequately shooting down all use of the old entries. This
1245 option enables the Linux kernel workaround for this erratum
1246 which sends an IPI to the CPUs that are running the same ASID
1247 as the one being invalidated.
1248
84b6504f
WD
1249config ARM_ERRATA_773022
1250 bool "ARM errata: incorrect instructions may be executed from loop buffer"
1251 depends on CPU_V7
1252 help
1253 This option enables the workaround for the 773022 Cortex-A15
1254 (up to r0p4) erratum. In certain rare sequences of code, the
1255 loop buffer may deliver incorrect instructions. This
1256 workaround disables the loop buffer to avoid the erratum.
1257
1da177e4
LT
1258endmenu
1259
1260source "arch/arm/common/Kconfig"
1261
1da177e4
LT
1262menu "Bus support"
1263
1264config ARM_AMBA
1265 bool
1266
1267config ISA
1268 bool
1da177e4
LT
1269 help
1270 Find out whether you have ISA slots on your motherboard. ISA is the
1271 name of a bus system, i.e. the way the CPU talks to the other stuff
1272 inside your box. Other bus systems are PCI, EISA, MicroChannel
1273 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1274 newer boards don't support it. If you have ISA, say Y, otherwise N.
1275
065909b9 1276# Select ISA DMA controller support
1da177e4
LT
1277config ISA_DMA
1278 bool
065909b9 1279 select ISA_DMA_API
1da177e4 1280
065909b9 1281# Select ISA DMA interface
5cae841b
AV
1282config ISA_DMA_API
1283 bool
5cae841b 1284
1da177e4 1285config PCI
0b05da72 1286 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1287 help
1288 Find out whether you have a PCI motherboard. PCI is the name of a
1289 bus system, i.e. the way the CPU talks to the other stuff inside
1290 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1291 VESA. If you have PCI, say Y, otherwise N.
1292
52882173
AV
1293config PCI_DOMAINS
1294 bool
1295 depends on PCI
1296
b080ac8a
MRJ
1297config PCI_NANOENGINE
1298 bool "BSE nanoEngine PCI support"
1299 depends on SA1100_NANOENGINE
1300 help
1301 Enable PCI on the BSE nanoEngine board.
1302
36e23590
MW
1303config PCI_SYSCALL
1304 def_bool PCI
1305
a0113a99
MR
1306config PCI_HOST_ITE8152
1307 bool
1308 depends on PCI && MACH_ARMCORE
1309 default y
1310 select DMABOUNCE
1311
1da177e4 1312source "drivers/pci/Kconfig"
3f06d157 1313source "drivers/pci/pcie/Kconfig"
1da177e4
LT
1314
1315source "drivers/pcmcia/Kconfig"
1316
1317endmenu
1318
1319menu "Kernel Features"
1320
3b55658a
DM
1321config HAVE_SMP
1322 bool
1323 help
1324 This option should be selected by machines which have an SMP-
1325 capable CPU.
1326
1327 The only effect of this option is to make the SMP-related
1328 options available to the user for configuration.
1329
1da177e4 1330config SMP
bb2d8130 1331 bool "Symmetric Multi-Processing"
fbb4ddac 1332 depends on CPU_V6K || CPU_V7
bc28248e 1333 depends on GENERIC_CLOCKEVENTS
3b55658a 1334 depends on HAVE_SMP
801bb21c 1335 depends on MMU || ARM_MPU
1da177e4
LT
1336 help
1337 This enables support for systems with more than one CPU. If you have
4a474157
RG
1338 a system with only one CPU, say N. If you have a system with more
1339 than one CPU, say Y.
1da177e4 1340
4a474157 1341 If you say N here, the kernel will run on uni- and multiprocessor
1da177e4 1342 machines, but will use only one CPU of a multiprocessor machine. If
4a474157
RG
1343 you say Y here, the kernel will run on many, but not all,
1344 uniprocessor machines. On a uniprocessor machine, the kernel
1345 will run faster if you say N here.
1da177e4 1346
395cf969 1347 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1348 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1349 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1350
1351 If you don't know what to do here, say N.
1352
f00ec48f
RK
1353config SMP_ON_UP
1354 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
801bb21c 1355 depends on SMP && !XIP_KERNEL && MMU
f00ec48f
RK
1356 default y
1357 help
1358 SMP kernels contain instructions which fail on non-SMP processors.
1359 Enabling this option allows the kernel to modify itself to make
1360 these instructions safe. Disabling it allows about 1K of space
1361 savings.
1362
1363 If you don't know what to do here, say Y.
1364
c9018aab
VG
1365config ARM_CPU_TOPOLOGY
1366 bool "Support cpu topology definition"
1367 depends on SMP && CPU_V7
1368 default y
1369 help
1370 Support ARM cpu topology definition. The MPIDR register defines
1371 affinity between processors which is then used to describe the cpu
1372 topology of an ARM System.
1373
1374config SCHED_MC
1375 bool "Multi-core scheduler support"
1376 depends on ARM_CPU_TOPOLOGY
1377 help
1378 Multi-core scheduler support improves the CPU scheduler's decision
1379 making when dealing with multi-core CPU chips at a cost of slightly
1380 increased overhead in some places. If unsure say N here.
1381
1382config SCHED_SMT
1383 bool "SMT scheduler support"
1384 depends on ARM_CPU_TOPOLOGY
1385 help
1386 Improves the CPU scheduler's decision making when dealing with
1387 MultiThreading at a cost of slightly increased overhead in some
1388 places. If unsure say N here.
1389
a8cbcd92
RK
1390config HAVE_ARM_SCU
1391 bool
a8cbcd92
RK
1392 help
1393 This option enables support for the ARM system coherency unit
1394
8a4da6e3 1395config HAVE_ARM_ARCH_TIMER
022c03a2
MZ
1396 bool "Architected timer support"
1397 depends on CPU_V7
8a4da6e3 1398 select ARM_ARCH_TIMER
0c403462 1399 select GENERIC_CLOCKEVENTS
022c03a2
MZ
1400 help
1401 This option enables support for the ARM architected timer
1402
f32f4ce2
RK
1403config HAVE_ARM_TWD
1404 bool
1405 depends on SMP
da4a686a 1406 select CLKSRC_OF if OF
f32f4ce2
RK
1407 help
1408 This options enables support for the ARM timer and watchdog unit
1409
e8db288e
NP
1410config MCPM
1411 bool "Multi-Cluster Power Management"
1412 depends on CPU_V7 && SMP
1413 help
1414 This option provides the common power management infrastructure
1415 for (multi-)cluster based systems, such as big.LITTLE based
1416 systems.
1417
1c33be57
NP
1418config BIG_LITTLE
1419 bool "big.LITTLE support (Experimental)"
1420 depends on CPU_V7 && SMP
1421 select MCPM
1422 help
1423 This option enables support selections for the big.LITTLE
1424 system architecture.
1425
1426config BL_SWITCHER
1427 bool "big.LITTLE switcher support"
1428 depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
1c33be57 1429 select ARM_CPU_SUSPEND
51aaf81f 1430 select CPU_PM
1c33be57
NP
1431 help
1432 The big.LITTLE "switcher" provides the core functionality to
1433 transparently handle transition between a cluster of A15's
1434 and a cluster of A7's in a big.LITTLE system.
1435
b22537c6
NP
1436config BL_SWITCHER_DUMMY_IF
1437 tristate "Simple big.LITTLE switcher user interface"
1438 depends on BL_SWITCHER && DEBUG_KERNEL
1439 help
1440 This is a simple and dummy char dev interface to control
1441 the big.LITTLE switcher core code. It is meant for
1442 debugging purposes only.
1443
8d5796d2
LB
1444choice
1445 prompt "Memory split"
006fa259 1446 depends on MMU
8d5796d2
LB
1447 default VMSPLIT_3G
1448 help
1449 Select the desired split between kernel and user memory.
1450
1451 If you are not absolutely sure what you are doing, leave this
1452 option alone!
1453
1454 config VMSPLIT_3G
1455 bool "3G/1G user/kernel split"
1456 config VMSPLIT_2G
1457 bool "2G/2G user/kernel split"
1458 config VMSPLIT_1G
1459 bool "1G/3G user/kernel split"
1460endchoice
1461
1462config PAGE_OFFSET
1463 hex
006fa259 1464 default PHYS_OFFSET if !MMU
8d5796d2
LB
1465 default 0x40000000 if VMSPLIT_1G
1466 default 0x80000000 if VMSPLIT_2G
1467 default 0xC0000000
1468
1da177e4
LT
1469config NR_CPUS
1470 int "Maximum number of CPUs (2-32)"
1471 range 2 32
1472 depends on SMP
1473 default "4"
1474
a054a811 1475config HOTPLUG_CPU
00b7dede 1476 bool "Support for hot-pluggable CPUs"
40b31360 1477 depends on SMP
a054a811
RK
1478 help
1479 Say Y here to experiment with turning CPUs off and on. CPUs
1480 can be controlled through /sys/devices/system/cpu.
1481
2bdd424f
WD
1482config ARM_PSCI
1483 bool "Support for the ARM Power State Coordination Interface (PSCI)"
1484 depends on CPU_V7
1485 help
1486 Say Y here if you want Linux to communicate with system firmware
1487 implementing the PSCI specification for CPU-centric power
1488 management operations described in ARM document number ARM DEN
1489 0022A ("Power State Coordination Interface System Software on
1490 ARM processors").
1491
2a6ad871
MR
1492# The GPIO number here must be sorted by descending number. In case of
1493# a multiplatform kernel, we just want the highest value required by the
1494# selected platforms.
44986ab0
PDSN
1495config ARCH_NR_GPIO
1496 int
3dea19e8 1497 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
aa42587a
TF
1498 default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1499 SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
eb171a99 1500 default 416 if ARCH_SUNXI
06b851e5 1501 default 392 if ARCH_U8500
01bb914c 1502 default 352 if ARCH_VT8500
2a6ad871 1503 default 264 if MACH_H4700
44986ab0
PDSN
1504 default 0
1505 help
1506 Maximum number of GPIOs in the system.
1507
1508 If unsure, leave the default value.
1509
d45a398f 1510source kernel/Kconfig.preempt
1da177e4 1511
c9218b16 1512config HZ_FIXED
f8065813 1513 int
070b8b43 1514 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
a73ddc61 1515 ARCH_S5PV210 || ARCH_EXYNOS4
5248c657 1516 default AT91_TIMER_HZ if ARCH_AT91
bf98c1ea 1517 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
47d84682 1518 default 0
c9218b16
RK
1519
1520choice
47d84682 1521 depends on HZ_FIXED = 0
c9218b16
RK
1522 prompt "Timer frequency"
1523
1524config HZ_100
1525 bool "100 Hz"
1526
1527config HZ_200
1528 bool "200 Hz"
1529
1530config HZ_250
1531 bool "250 Hz"
1532
1533config HZ_300
1534 bool "300 Hz"
1535
1536config HZ_500
1537 bool "500 Hz"
1538
1539config HZ_1000
1540 bool "1000 Hz"
1541
1542endchoice
1543
1544config HZ
1545 int
47d84682 1546 default HZ_FIXED if HZ_FIXED != 0
c9218b16
RK
1547 default 100 if HZ_100
1548 default 200 if HZ_200
1549 default 250 if HZ_250
1550 default 300 if HZ_300
1551 default 500 if HZ_500
1552 default 1000
1553
1554config SCHED_HRTICK
1555 def_bool HIGH_RES_TIMERS
f8065813 1556
16c79651 1557config THUMB2_KERNEL
bc7dea00 1558 bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
4477ca45 1559 depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
bc7dea00 1560 default y if CPU_THUMBONLY
16c79651
CM
1561 select AEABI
1562 select ARM_ASM_UNIFIED
89bace65 1563 select ARM_UNWIND
16c79651
CM
1564 help
1565 By enabling this option, the kernel will be compiled in
1566 Thumb-2 mode. A compiler/assembler that understand the unified
1567 ARM-Thumb syntax is needed.
1568
1569 If unsure, say N.
1570
6f685c5c
DM
1571config THUMB2_AVOID_R_ARM_THM_JUMP11
1572 bool "Work around buggy Thumb-2 short branch relocations in gas"
1573 depends on THUMB2_KERNEL && MODULES
1574 default y
1575 help
1576 Various binutils versions can resolve Thumb-2 branches to
1577 locally-defined, preemptible global symbols as short-range "b.n"
1578 branch instructions.
1579
1580 This is a problem, because there's no guarantee the final
1581 destination of the symbol, or any candidate locations for a
1582 trampoline, are within range of the branch. For this reason, the
1583 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1584 relocation in modules at all, and it makes little sense to add
1585 support.
1586
1587 The symptom is that the kernel fails with an "unsupported
1588 relocation" error when loading some modules.
1589
1590 Until fixed tools are available, passing
1591 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1592 code which hits this problem, at the cost of a bit of extra runtime
1593 stack usage in some cases.
1594
1595 The problem is described in more detail at:
1596 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1597
1598 Only Thumb-2 kernels are affected.
1599
1600 Unless you are sure your tools don't have this problem, say Y.
1601
0becb088
CM
1602config ARM_ASM_UNIFIED
1603 bool
1604
704bdda0
NP
1605config AEABI
1606 bool "Use the ARM EABI to compile the kernel"
1607 help
1608 This option allows for the kernel to be compiled using the latest
1609 ARM ABI (aka EABI). This is only useful if you are using a user
1610 space environment that is also compiled with EABI.
1611
1612 Since there are major incompatibilities between the legacy ABI and
1613 EABI, especially with regard to structure member alignment, this
1614 option also changes the kernel syscall calling convention to
1615 disambiguate both ABIs and allow for backward compatibility support
1616 (selected with CONFIG_OABI_COMPAT).
1617
1618 To use this you need GCC version 4.0.0 or later.
1619
6c90c872 1620config OABI_COMPAT
a73a3ff1 1621 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
d6f94fa0 1622 depends on AEABI && !THUMB2_KERNEL
6c90c872
NP
1623 help
1624 This option preserves the old syscall interface along with the
1625 new (ARM EABI) one. It also provides a compatibility layer to
1626 intercept syscalls that have structure arguments which layout
1627 in memory differs between the legacy ABI and the new ARM EABI
1628 (only for non "thumb" binaries). This option adds a tiny
1629 overhead to all syscalls and produces a slightly larger kernel.
91702175
KC
1630
1631 The seccomp filter system will not be available when this is
1632 selected, since there is no way yet to sensibly distinguish
1633 between calling conventions during filtering.
1634
6c90c872
NP
1635 If you know you'll be using only pure EABI user space then you
1636 can say N here. If this option is not selected and you attempt
1637 to execute a legacy ABI binary then the result will be
1638 UNPREDICTABLE (in fact it can be predicted that it won't work
b02f8467 1639 at all). If in doubt say N.
6c90c872 1640
eb33575c 1641config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1642 bool
e80d6a24 1643
05944d74
RK
1644config ARCH_SPARSEMEM_ENABLE
1645 bool
1646
07a2f737
RK
1647config ARCH_SPARSEMEM_DEFAULT
1648 def_bool ARCH_SPARSEMEM_ENABLE
1649
05944d74 1650config ARCH_SELECT_MEMORY_MODEL
be370302 1651 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1652
7b7bf499
WD
1653config HAVE_ARCH_PFN_VALID
1654 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1655
053a96ca 1656config HIGHMEM
e8db89a2
RK
1657 bool "High Memory Support"
1658 depends on MMU
053a96ca
NP
1659 help
1660 The address space of ARM processors is only 4 Gigabytes large
1661 and it has to accommodate user address space, kernel address
1662 space as well as some memory mapped IO. That means that, if you
1663 have a large amount of physical memory and/or IO, not all of the
1664 memory can be "permanently mapped" by the kernel. The physical
1665 memory that is not permanently mapped is called "high memory".
1666
1667 Depending on the selected kernel/user memory split, minimum
1668 vmalloc space and actual amount of RAM, you may not need this
1669 option which should result in a slightly faster kernel.
1670
1671 If unsure, say n.
1672
65cec8e3
RK
1673config HIGHPTE
1674 bool "Allocate 2nd-level pagetables from highmem"
1675 depends on HIGHMEM
65cec8e3 1676
1b8873a0
JI
1677config HW_PERF_EVENTS
1678 bool "Enable hardware performance counter support for perf events"
f0d1bc47 1679 depends on PERF_EVENTS
1b8873a0
JI
1680 default y
1681 help
1682 Enable hardware performance counter support for perf events. If
1683 disabled, perf events will use software events only.
1684
1355e2a6
CM
1685config SYS_SUPPORTS_HUGETLBFS
1686 def_bool y
1687 depends on ARM_LPAE
1688
8d962507
CM
1689config HAVE_ARCH_TRANSPARENT_HUGEPAGE
1690 def_bool y
1691 depends on ARM_LPAE
1692
4bfab203
SC
1693config ARCH_WANT_GENERAL_HUGETLB
1694 def_bool y
1695
3f22ab27
DH
1696source "mm/Kconfig"
1697
c1b2d970 1698config FORCE_MAX_ZONEORDER
bf98c1ea
LP
1699 int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1700 range 11 64 if ARCH_SHMOBILE_LEGACY
898f08e1 1701 default "12" if SOC_AM33XX
6d85e2b0 1702 default "9" if SA1111 || ARCH_EFM32
c1b2d970
MD
1703 default "11"
1704 help
1705 The kernel memory allocator divides physically contiguous memory
1706 blocks into "zones", where each zone is a power of two number of
1707 pages. This option selects the largest power of two that the kernel
1708 keeps in the memory allocator. If you need to allocate very large
1709 blocks of physically contiguous memory, then you may need to
1710 increase this value.
1711
1712 This config option is actually maximum order plus one. For example,
1713 a value of 11 means that the largest free memory block is 2^10 pages.
1714
1da177e4
LT
1715config ALIGNMENT_TRAP
1716 bool
f12d0d7c 1717 depends on CPU_CP15_MMU
1da177e4 1718 default y if !ARCH_EBSA110
e119bfff 1719 select HAVE_PROC_CPU if PROC_FS
1da177e4 1720 help
84eb8d06 1721 ARM processors cannot fetch/store information which is not
1da177e4
LT
1722 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1723 address divisible by 4. On 32-bit ARM processors, these non-aligned
1724 fetch/store instructions will be emulated in software if you say
1725 here, which has a severe performance impact. This is necessary for
1726 correct operation of some network protocols. With an IP-only
1727 configuration it is safe to say N, otherwise say Y.
1728
39ec58f3 1729config UACCESS_WITH_MEMCPY
38ef2ad5
LW
1730 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1731 depends on MMU
39ec58f3
LB
1732 default y if CPU_FEROCEON
1733 help
1734 Implement faster copy_to_user and clear_user methods for CPU
1735 cores where a 8-word STM instruction give significantly higher
1736 memory write throughput than a sequence of individual 32bit stores.
1737
1738 A possible side effect is a slight increase in scheduling latency
1739 between threads sharing the same address space if they invoke
1740 such copy operations with large buffers.
1741
1742 However, if the CPU data cache is using a write-allocate mode,
1743 this option is unlikely to provide any performance gain.
1744
70c70d97
NP
1745config SECCOMP
1746 bool
1747 prompt "Enable seccomp to safely compute untrusted bytecode"
1748 ---help---
1749 This kernel feature is useful for number crunching applications
1750 that may need to compute untrusted bytecode during their
1751 execution. By using pipes or other transports made available to
1752 the process as file descriptors supporting the read/write
1753 syscalls, it's possible to isolate those applications in
1754 their own address space using seccomp. Once seccomp is
1755 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1756 and the task is only allowed to execute a few safe syscalls
1757 defined by each seccomp mode.
1758
06e6295b
SS
1759config SWIOTLB
1760 def_bool y
1761
1762config IOMMU_HELPER
1763 def_bool SWIOTLB
1764
eff8d644
SS
1765config XEN_DOM0
1766 def_bool y
1767 depends on XEN
1768
1769config XEN
1770 bool "Xen guest support on ARM (EXPERIMENTAL)"
85323a99 1771 depends on ARM && AEABI && OF
f880b67d 1772 depends on CPU_V7 && !CPU_V6
85323a99 1773 depends on !GENERIC_ATOMIC64
7693decc 1774 depends on MMU
51aaf81f 1775 select ARCH_DMA_ADDR_T_64BIT
17b7ab80 1776 select ARM_PSCI
83862ccf 1777 select SWIOTLB_XEN
eff8d644
SS
1778 help
1779 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1780
1da177e4
LT
1781endmenu
1782
1783menu "Boot options"
1784
9eb8f674
GL
1785config USE_OF
1786 bool "Flattened Device Tree support"
b1b3f49c 1787 select IRQ_DOMAIN
9eb8f674
GL
1788 select OF
1789 select OF_EARLY_FLATTREE
bcedb5f9 1790 select OF_RESERVED_MEM
9eb8f674
GL
1791 help
1792 Include support for flattened device tree machine descriptions.
1793
bd51e2f5
NP
1794config ATAGS
1795 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1796 default y
1797 help
1798 This is the traditional way of passing data to the kernel at boot
1799 time. If you are solely relying on the flattened device tree (or
1800 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1801 to remove ATAGS support from your kernel binary. If unsure,
1802 leave this to y.
1803
1804config DEPRECATED_PARAM_STRUCT
1805 bool "Provide old way to pass kernel parameters"
1806 depends on ATAGS
1807 help
1808 This was deprecated in 2001 and announced to live on for 5 years.
1809 Some old boot loaders still use this way.
1810
1da177e4
LT
1811# Compressed boot loader in ROM. Yes, we really want to ask about
1812# TEXT and BSS so we preserve their values in the config files.
1813config ZBOOT_ROM_TEXT
1814 hex "Compressed ROM boot loader base address"
1815 default "0"
1816 help
1817 The physical address at which the ROM-able zImage is to be
1818 placed in the target. Platforms which normally make use of
1819 ROM-able zImage formats normally set this to a suitable
1820 value in their defconfig file.
1821
1822 If ZBOOT_ROM is not enabled, this has no effect.
1823
1824config ZBOOT_ROM_BSS
1825 hex "Compressed ROM boot loader BSS address"
1826 default "0"
1827 help
f8c440b2
DF
1828 The base address of an area of read/write memory in the target
1829 for the ROM-able zImage which must be available while the
1830 decompressor is running. It must be large enough to hold the
1831 entire decompressed kernel plus an additional 128 KiB.
1832 Platforms which normally make use of ROM-able zImage formats
1833 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1834
1835 If ZBOOT_ROM is not enabled, this has no effect.
1836
1837config ZBOOT_ROM
1838 bool "Compressed boot loader in ROM/flash"
1839 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
10968131 1840 depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
1da177e4
LT
1841 help
1842 Say Y here if you intend to execute your compressed kernel image
1843 (zImage) directly from ROM or flash. If unsure, say N.
1844
090ab3ff
SH
1845choice
1846 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
d6f94fa0 1847 depends on ZBOOT_ROM && ARCH_SH7372
090ab3ff
SH
1848 default ZBOOT_ROM_NONE
1849 help
1850 Include experimental SD/MMC loading code in the ROM-able zImage.
59bf8964 1851 With this enabled it is possible to write the ROM-able zImage
090ab3ff
SH
1852 kernel image to an MMC or SD card and boot the kernel straight
1853 from the reset vector. At reset the processor Mask ROM will load
59bf8964 1854 the first part of the ROM-able zImage which in turn loads the
090ab3ff
SH
1855 rest the kernel image to RAM.
1856
1857config ZBOOT_ROM_NONE
1858 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1859 help
1860 Do not load image from SD or MMC
1861
f45b1149
SH
1862config ZBOOT_ROM_MMCIF
1863 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1864 help
090ab3ff
SH
1865 Load image from MMCIF hardware block.
1866
1867config ZBOOT_ROM_SH_MOBILE_SDHI
1868 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1869 help
1870 Load image from SDHI hardware block
1871
1872endchoice
f45b1149 1873
e2a6a3aa
JB
1874config ARM_APPENDED_DTB
1875 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
10968131 1876 depends on OF
e2a6a3aa
JB
1877 help
1878 With this option, the boot code will look for a device tree binary
1879 (DTB) appended to zImage
1880 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1881
1882 This is meant as a backward compatibility convenience for those
1883 systems with a bootloader that can't be upgraded to accommodate
1884 the documented boot protocol using a device tree.
1885
1886 Beware that there is very little in terms of protection against
1887 this option being confused by leftover garbage in memory that might
1888 look like a DTB header after a reboot if no actual DTB is appended
1889 to zImage. Do not leave this option active in a production kernel
1890 if you don't intend to always append a DTB. Proper passing of the
1891 location into r2 of a bootloader provided DTB is always preferable
1892 to this option.
1893
b90b9a38
NP
1894config ARM_ATAG_DTB_COMPAT
1895 bool "Supplement the appended DTB with traditional ATAG information"
1896 depends on ARM_APPENDED_DTB
1897 help
1898 Some old bootloaders can't be updated to a DTB capable one, yet
1899 they provide ATAGs with memory configuration, the ramdisk address,
1900 the kernel cmdline string, etc. Such information is dynamically
1901 provided by the bootloader and can't always be stored in a static
1902 DTB. To allow a device tree enabled kernel to be used with such
1903 bootloaders, this option allows zImage to extract the information
1904 from the ATAG list and store it at run time into the appended DTB.
1905
d0f34a11
GR
1906choice
1907 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1908 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1909
1910config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1911 bool "Use bootloader kernel arguments if available"
1912 help
1913 Uses the command-line options passed by the boot loader instead of
1914 the device tree bootargs property. If the boot loader doesn't provide
1915 any, the device tree bootargs property will be used.
1916
1917config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1918 bool "Extend with bootloader kernel arguments"
1919 help
1920 The command-line arguments provided by the boot loader will be
1921 appended to the the device tree bootargs property.
1922
1923endchoice
1924
1da177e4
LT
1925config CMDLINE
1926 string "Default kernel command string"
1927 default ""
1928 help
1929 On some architectures (EBSA110 and CATS), there is currently no way
1930 for the boot loader to pass arguments to the kernel. For these
1931 architectures, you should supply some command-line options at build
1932 time by entering them here. As a minimum, you should specify the
1933 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1934
4394c124
VB
1935choice
1936 prompt "Kernel command line type" if CMDLINE != ""
1937 default CMDLINE_FROM_BOOTLOADER
bd51e2f5 1938 depends on ATAGS
4394c124
VB
1939
1940config CMDLINE_FROM_BOOTLOADER
1941 bool "Use bootloader kernel arguments if available"
1942 help
1943 Uses the command-line options passed by the boot loader. If
1944 the boot loader doesn't provide any, the default kernel command
1945 string provided in CMDLINE will be used.
1946
1947config CMDLINE_EXTEND
1948 bool "Extend bootloader kernel arguments"
1949 help
1950 The command-line arguments provided by the boot loader will be
1951 appended to the default kernel command string.
1952
92d2040d
AH
1953config CMDLINE_FORCE
1954 bool "Always use the default kernel command string"
92d2040d
AH
1955 help
1956 Always use the default kernel command string, even if the boot
1957 loader passes other arguments to the kernel.
1958 This is useful if you cannot or don't want to change the
1959 command-line options your boot loader passes to the kernel.
4394c124 1960endchoice
92d2040d 1961
1da177e4
LT
1962config XIP_KERNEL
1963 bool "Kernel Execute-In-Place from ROM"
10968131 1964 depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
1da177e4
LT
1965 help
1966 Execute-In-Place allows the kernel to run from non-volatile storage
1967 directly addressable by the CPU, such as NOR flash. This saves RAM
1968 space since the text section of the kernel is not loaded from flash
1969 to RAM. Read-write sections, such as the data section and stack,
1970 are still copied to RAM. The XIP kernel is not compressed since
1971 it has to run directly from flash, so it will take more space to
1972 store it. The flash address used to link the kernel object files,
1973 and for storing it, is configuration dependent. Therefore, if you
1974 say Y here, you must know the proper physical address where to
1975 store the kernel image depending on your own flash memory usage.
1976
1977 Also note that the make target becomes "make xipImage" rather than
1978 "make zImage" or "make Image". The final kernel binary to put in
1979 ROM memory will be arch/arm/boot/xipImage.
1980
1981 If unsure, say N.
1982
1983config XIP_PHYS_ADDR
1984 hex "XIP Kernel Physical Location"
1985 depends on XIP_KERNEL
1986 default "0x00080000"
1987 help
1988 This is the physical address in your flash memory the kernel will
1989 be linked for and stored to. This address is dependent on your
1990 own flash usage.
1991
c587e4a6
RP
1992config KEXEC
1993 bool "Kexec system call (EXPERIMENTAL)"
19ab428f 1994 depends on (!SMP || PM_SLEEP_SMP)
c587e4a6
RP
1995 help
1996 kexec is a system call that implements the ability to shutdown your
1997 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 1998 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
1999 you can start any kernel with it, not just Linux.
2000
2001 It is an ongoing process to be certain the hardware in a machine
2002 is properly shutdown, so do not be surprised if this code does not
bf220695 2003 initially work for you.
c587e4a6 2004
4cd9d6f7
RP
2005config ATAGS_PROC
2006 bool "Export atags in procfs"
bd51e2f5 2007 depends on ATAGS && KEXEC
b98d7291 2008 default y
4cd9d6f7
RP
2009 help
2010 Should the atags used to boot the kernel be exported in an "atags"
2011 file in procfs. Useful with kexec.
2012
cb5d39b3
MW
2013config CRASH_DUMP
2014 bool "Build kdump crash kernel (EXPERIMENTAL)"
cb5d39b3
MW
2015 help
2016 Generate crash dump after being started by kexec. This should
2017 be normally only set in special crash dump kernels which are
2018 loaded in the main kernel with kexec-tools into a specially
2019 reserved region and then later executed after a crash by
2020 kdump/kexec. The crash dump kernel must be compiled to a
2021 memory address not used by the main kernel
2022
2023 For more details see Documentation/kdump/kdump.txt
2024
e69edc79
EM
2025config AUTO_ZRELADDR
2026 bool "Auto calculation of the decompressed kernel image address"
e69edc79
EM
2027 help
2028 ZRELADDR is the physical address where the decompressed kernel
2029 image will be placed. If AUTO_ZRELADDR is selected, the address
2030 will be determined at run-time by masking the current IP with
2031 0xf8000000. This assumes the zImage being placed in the first 128MB
2032 from start of memory.
2033
1da177e4
LT
2034endmenu
2035
ac9d7efc 2036menu "CPU Power Management"
1da177e4 2037
1da177e4 2038source "drivers/cpufreq/Kconfig"
1da177e4 2039
ac9d7efc
RK
2040source "drivers/cpuidle/Kconfig"
2041
2042endmenu
2043
1da177e4
LT
2044menu "Floating point emulation"
2045
2046comment "At least one emulation must be selected"
2047
2048config FPE_NWFPE
2049 bool "NWFPE math emulation"
593c252a 2050 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2051 ---help---
2052 Say Y to include the NWFPE floating point emulator in the kernel.
2053 This is necessary to run most binaries. Linux does not currently
2054 support floating point hardware so you need to say Y here even if
2055 your machine has an FPA or floating point co-processor podule.
2056
2057 You may say N here if you are going to load the Acorn FPEmulator
2058 early in the bootup.
2059
2060config FPE_NWFPE_XP
2061 bool "Support extended precision"
bedf142b 2062 depends on FPE_NWFPE
1da177e4
LT
2063 help
2064 Say Y to include 80-bit support in the kernel floating-point
2065 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2066 Note that gcc does not generate 80-bit operations by default,
2067 so in most cases this option only enlarges the size of the
2068 floating point emulator without any good reason.
2069
2070 You almost surely want to say N here.
2071
2072config FPE_FASTFPE
2073 bool "FastFPE math emulation (EXPERIMENTAL)"
d6f94fa0 2074 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
1da177e4
LT
2075 ---help---
2076 Say Y here to include the FAST floating point emulator in the kernel.
2077 This is an experimental much faster emulator which now also has full
2078 precision for the mantissa. It does not support any exceptions.
2079 It is very simple, and approximately 3-6 times faster than NWFPE.
2080
2081 It should be sufficient for most programs. It may be not suitable
2082 for scientific calculations, but you have to check this for yourself.
2083 If you do not feel you need a faster FP emulation you should better
2084 choose NWFPE.
2085
2086config VFP
2087 bool "VFP-format floating point maths"
e399b1a4 2088 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2089 help
2090 Say Y to include VFP support code in the kernel. This is needed
2091 if your hardware includes a VFP unit.
2092
2093 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2094 release notes and additional status information.
2095
2096 Say N if your target does not have VFP hardware.
2097
25ebee02
CM
2098config VFPv3
2099 bool
2100 depends on VFP
2101 default y if CPU_V7
2102
b5872db4
CM
2103config NEON
2104 bool "Advanced SIMD (NEON) Extension support"
2105 depends on VFPv3 && CPU_V7
2106 help
2107 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2108 Extension.
2109
73c132c1
AB
2110config KERNEL_MODE_NEON
2111 bool "Support for NEON in kernel mode"
c4a30c3b 2112 depends on NEON && AEABI
73c132c1
AB
2113 help
2114 Say Y to include support for NEON in kernel mode.
2115
1da177e4
LT
2116endmenu
2117
2118menu "Userspace binary formats"
2119
2120source "fs/Kconfig.binfmt"
2121
2122config ARTHUR
2123 tristate "RISC OS personality"
704bdda0 2124 depends on !AEABI
1da177e4
LT
2125 help
2126 Say Y here to include the kernel code necessary if you want to run
2127 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2128 experimental; if this sounds frightening, say N and sleep in peace.
2129 You can also say M here to compile this support as a module (which
2130 will be called arthur).
2131
2132endmenu
2133
2134menu "Power management options"
2135
eceab4ac 2136source "kernel/power/Kconfig"
1da177e4 2137
f4cb5700 2138config ARCH_SUSPEND_POSSIBLE
19a0519d 2139 depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
f0d75153 2140 CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
f4cb5700
JB
2141 def_bool y
2142
15e0d9e3
AB
2143config ARM_CPU_SUSPEND
2144 def_bool PM_SLEEP
2145
603fb42a
SC
2146config ARCH_HIBERNATION_POSSIBLE
2147 bool
2148 depends on MMU
2149 default y if ARCH_SUSPEND_POSSIBLE
2150
1da177e4
LT
2151endmenu
2152
d5950b43
SR
2153source "net/Kconfig"
2154
ac25150f 2155source "drivers/Kconfig"
1da177e4
LT
2156
2157source "fs/Kconfig"
2158
1da177e4
LT
2159source "arch/arm/Kconfig.debug"
2160
2161source "security/Kconfig"
2162
2163source "crypto/Kconfig"
2164
2165source "lib/Kconfig"
749cf76c
CD
2166
2167source "arch/arm/kvm/Kconfig"