ARM: integrator: fix build with INTEGRATOR_AP off
[deliverable/linux.git] / arch / arm / Kconfig
CommitLineData
1da177e4
LT
1config ARM
2 bool
3 default y
b1b3f49c
RK
4 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
5 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
7563bbf8 6 select ARCH_HAVE_CUSTOM_GPIO_H
b1b3f49c 7 select ARCH_WANT_IPC_PARSE_VERSION
ee951c63 8 select BUILDTIME_EXTABLE_SORT if MMU
b1b3f49c 9 select CPU_PM if (SUSPEND || CPU_IDLE)
39b175a0 10 select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN && MMU
a41297a0 11 select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
b1b3f49c
RK
12 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
13 select GENERIC_IRQ_PROBE
14 select GENERIC_IRQ_SHOW
b1b3f49c
RK
15 select GENERIC_PCI_IOMAP
16 select GENERIC_SMP_IDLE_THREAD
17 select GENERIC_STRNCPY_FROM_USER
18 select GENERIC_STRNLEN_USER
19 select HARDIRQS_SW_RESEND
20 select HAVE_AOUT
09f05d85 21 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
5cbad0eb 22 select HAVE_ARCH_KGDB
4095ccc3 23 select HAVE_ARCH_SECCOMP_FILTER
0693bf68 24 select HAVE_ARCH_TRACEHOOK
b1b3f49c
RK
25 select HAVE_BPF_JIT
26 select HAVE_C_RECORDMCOUNT
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_DMA_API_DEBUG
29 select HAVE_DMA_ATTRS
30 select HAVE_DMA_CONTIGUOUS if MMU
80be7a7f 31 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
b1b3f49c 32 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
0e341af8 33 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
b1b3f49c 34 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1fe53268 35 select HAVE_GENERIC_DMA_COHERENT
b1b3f49c
RK
36 select HAVE_GENERIC_HARDIRQS
37 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
38 select HAVE_IDE if PCI || ISA || PCMCIA
39 select HAVE_IRQ_WORK
e7db7b42 40 select HAVE_KERNEL_GZIP
6e8699f7 41 select HAVE_KERNEL_LZMA
b1b3f49c 42 select HAVE_KERNEL_LZO
a7f464f3 43 select HAVE_KERNEL_XZ
b1b3f49c
RK
44 select HAVE_KPROBES if !XIP_KERNEL
45 select HAVE_KRETPROBES if (HAVE_KPROBES)
46 select HAVE_MEMBLOCK
47 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
7ada189f 48 select HAVE_PERF_EVENTS
e513f8bf 49 select HAVE_REGS_AND_STACK_ACCESS_API
b1b3f49c 50 select HAVE_SYSCALL_TRACEPOINTS
af1839eb 51 select HAVE_UID16
3d92a71a 52 select KTIME_SCALAR
b1b3f49c
RK
53 select PERF_USE_VMALLOC
54 select RTC_LIB
55 select SYS_SUPPORTS_APM_EMULATION
786d35d4
DH
56 select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
57 select MODULES_USE_ELF_REL
38a61b6b 58 select CLONE_BACKWARDS
1da177e4
LT
59 help
60 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 61 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 62 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 63 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
64 Europe. There is an ARM Linux project with a web page at
65 <http://www.arm.linux.org.uk/>.
66
74facffe
RK
67config ARM_HAS_SG_CHAIN
68 bool
69
4ce63fcd
MS
70config NEED_SG_DMA_LENGTH
71 bool
72
73config ARM_DMA_USE_IOMMU
4ce63fcd 74 bool
b1b3f49c
RK
75 select ARM_HAS_SG_CHAIN
76 select NEED_SG_DMA_LENGTH
4ce63fcd 77
1a189b97
RK
78config HAVE_PWM
79 bool
80
0b05da72
HUK
81config MIGHT_HAVE_PCI
82 bool
83
75e7153a
RB
84config SYS_SUPPORTS_APM_EMULATION
85 bool
86
0a938b97
DB
87config GENERIC_GPIO
88 bool
0a938b97 89
bc581770
LW
90config HAVE_TCM
91 bool
92 select GENERIC_ALLOCATOR
93
e119bfff
RK
94config HAVE_PROC_CPU
95 bool
96
5ea81769
AV
97config NO_IOPORT
98 bool
5ea81769 99
1da177e4
LT
100config EISA
101 bool
102 ---help---
103 The Extended Industry Standard Architecture (EISA) bus was
104 developed as an open alternative to the IBM MicroChannel bus.
105
106 The EISA bus provided some of the features of the IBM MicroChannel
107 bus while maintaining backward compatibility with cards made for
108 the older ISA bus. The EISA bus saw limited use between 1988 and
109 1995 when it was made obsolete by the PCI bus.
110
111 Say Y here if you are building a kernel for an EISA-based machine.
112
113 Otherwise, say N.
114
115config SBUS
116 bool
117
f16fb1ec
RK
118config STACKTRACE_SUPPORT
119 bool
120 default y
121
f76e9154
NP
122config HAVE_LATENCYTOP_SUPPORT
123 bool
124 depends on !SMP
125 default y
126
f16fb1ec
RK
127config LOCKDEP_SUPPORT
128 bool
129 default y
130
7ad1bcb2
RK
131config TRACE_IRQFLAGS_SUPPORT
132 bool
133 default y
134
1da177e4
LT
135config RWSEM_GENERIC_SPINLOCK
136 bool
137 default y
138
139config RWSEM_XCHGADD_ALGORITHM
140 bool
141
f0d1b0b3
DH
142config ARCH_HAS_ILOG2_U32
143 bool
f0d1b0b3
DH
144
145config ARCH_HAS_ILOG2_U64
146 bool
f0d1b0b3 147
89c52ed4
BD
148config ARCH_HAS_CPUFREQ
149 bool
150 help
151 Internal node to signify that the ARCH has CPUFREQ support
152 and that the relevant menu configurations are displayed for
153 it.
154
b89c3b16
AM
155config GENERIC_HWEIGHT
156 bool
157 default y
158
1da177e4
LT
159config GENERIC_CALIBRATE_DELAY
160 bool
161 default y
162
a08b6b79
Z
163config ARCH_MAY_HAVE_PC_FDC
164 bool
165
5ac6da66
CL
166config ZONE_DMA
167 bool
5ac6da66 168
ccd7ab7f
FT
169config NEED_DMA_MAP_STATE
170 def_bool y
171
58af4a24
RH
172config ARCH_HAS_DMA_SET_COHERENT_MASK
173 bool
174
1da177e4
LT
175config GENERIC_ISA_DMA
176 bool
177
1da177e4
LT
178config FIQ
179 bool
180
13a5045d
RH
181config NEED_RET_TO_USER
182 bool
183
034d2f5a
AV
184config ARCH_MTD_XIP
185 bool
186
c760fc19
HC
187config VECTORS_BASE
188 hex
6afd6fae 189 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
190 default DRAM_BASE if REMAP_VECTORS_TO_RAM
191 default 0x00000000
192 help
193 The base address of exception vectors.
194
dc21af99 195config ARM_PATCH_PHYS_VIRT
c1becedc
RK
196 bool "Patch physical to virtual translations at runtime" if EMBEDDED
197 default y
b511d75d 198 depends on !XIP_KERNEL && MMU
dc21af99
RK
199 depends on !ARCH_REALVIEW || !SPARSEMEM
200 help
111e9a5c
RK
201 Patch phys-to-virt and virt-to-phys translation functions at
202 boot and module load time according to the position of the
203 kernel in system memory.
dc21af99 204
111e9a5c 205 This can only be used with non-XIP MMU kernels where the base
daece596 206 of physical memory is at a 16MB boundary.
dc21af99 207
c1becedc
RK
208 Only disable this option if you know that you do not require
209 this feature (eg, building a kernel for a single machine) and
210 you need to shrink the kernel to the minimal size.
dc21af99 211
01464226
RH
212config NEED_MACH_GPIO_H
213 bool
214 help
215 Select this when mach/gpio.h is required to provide special
216 definitions for this platform. The need for mach/gpio.h should
217 be avoided when possible.
218
c334bc15
RH
219config NEED_MACH_IO_H
220 bool
221 help
222 Select this when mach/io.h is required to provide special
223 definitions for this platform. The need for mach/io.h should
224 be avoided when possible.
225
0cdc8b92 226config NEED_MACH_MEMORY_H
1b9f95f8
NP
227 bool
228 help
0cdc8b92
NP
229 Select this when mach/memory.h is required to provide special
230 definitions for this platform. The need for mach/memory.h should
231 be avoided when possible.
dc21af99 232
1b9f95f8 233config PHYS_OFFSET
974c0724 234 hex "Physical address of main memory" if MMU
0cdc8b92 235 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
974c0724 236 default DRAM_BASE if !MMU
111e9a5c 237 help
1b9f95f8
NP
238 Please provide the physical address corresponding to the
239 location of main memory in your system.
cada3c08 240
87e040b6
SG
241config GENERIC_BUG
242 def_bool y
243 depends on BUG
244
1da177e4
LT
245source "init/Kconfig"
246
dc52ddc0
MH
247source "kernel/Kconfig.freezer"
248
1da177e4
LT
249menu "System Type"
250
3c427975
HC
251config MMU
252 bool "MMU-based Paged Memory Management Support"
253 default y
254 help
255 Select if you want MMU-based virtualised addressing space
256 support by paged memory management. If unsure, say 'Y'.
257
ccf50e23
RK
258#
259# The "ARM system type" choice list is ordered alphabetically by option
260# text. Please add new entries in the option alphabetic order.
261#
1da177e4
LT
262choice
263 prompt "ARM system type"
387798b3 264 default ARCH_MULTIPLATFORM
1da177e4 265
387798b3
RH
266config ARCH_MULTIPLATFORM
267 bool "Allow multiple platforms to be selected"
b1b3f49c 268 depends on MMU
387798b3
RH
269 select ARM_PATCH_PHYS_VIRT
270 select AUTO_ZRELADDR
66314223 271 select COMMON_CLK
387798b3 272 select MULTI_IRQ_HANDLER
66314223
DN
273 select SPARSE_IRQ
274 select USE_OF
66314223 275
4af6fee1
DS
276config ARCH_INTEGRATOR
277 bool "ARM Ltd. Integrator family"
89c52ed4 278 select ARCH_HAS_CPUFREQ
b1b3f49c 279 select ARM_AMBA
a613163d 280 select COMMON_CLK
f9a6aa43 281 select COMMON_CLK_VERSATILE
b1b3f49c 282 select GENERIC_CLOCKEVENTS
9904f793 283 select HAVE_TCM
c5a0adb5 284 select ICST
b1b3f49c
RK
285 select MULTI_IRQ_HANDLER
286 select NEED_MACH_MEMORY_H
f4b8b319 287 select PLAT_VERSATILE
695436e3 288 select SPARSE_IRQ
2389d501 289 select VERSATILE_FPGA_IRQ
4af6fee1
DS
290 help
291 Support for ARM's Integrator platform.
292
293config ARCH_REALVIEW
294 bool "ARM Ltd. RealView family"
b1b3f49c 295 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 296 select ARM_AMBA
b1b3f49c 297 select ARM_TIMER_SP804
f9a6aa43
LW
298 select COMMON_CLK
299 select COMMON_CLK_VERSATILE
ae30ceac 300 select GENERIC_CLOCKEVENTS
b56ba8aa 301 select GPIO_PL061 if GPIOLIB
b1b3f49c 302 select ICST
0cdc8b92 303 select NEED_MACH_MEMORY_H
b1b3f49c
RK
304 select PLAT_VERSATILE
305 select PLAT_VERSATILE_CLCD
4af6fee1
DS
306 help
307 This enables support for ARM Ltd RealView boards.
308
309config ARCH_VERSATILE
310 bool "ARM Ltd. Versatile family"
b1b3f49c 311 select ARCH_WANT_OPTIONAL_GPIOLIB
4af6fee1 312 select ARM_AMBA
b1b3f49c 313 select ARM_TIMER_SP804
4af6fee1 314 select ARM_VIC
6d803ba7 315 select CLKDEV_LOOKUP
b1b3f49c 316 select GENERIC_CLOCKEVENTS
aa3831cf 317 select HAVE_MACH_CLKDEV
c5a0adb5 318 select ICST
f4b8b319 319 select PLAT_VERSATILE
3414ba8c 320 select PLAT_VERSATILE_CLCD
b1b3f49c 321 select PLAT_VERSATILE_CLOCK
2389d501 322 select VERSATILE_FPGA_IRQ
4af6fee1
DS
323 help
324 This enables support for ARM Ltd Versatile board.
325
8fc5ffa0
AV
326config ARCH_AT91
327 bool "Atmel AT91"
f373e8c0 328 select ARCH_REQUIRE_GPIOLIB
bd602995 329 select CLKDEV_LOOKUP
b1b3f49c 330 select HAVE_CLK
e261501d 331 select IRQ_DOMAIN
01464226 332 select NEED_MACH_GPIO_H
1ac02d79 333 select NEED_MACH_IO_H if PCCARD
6732ae5c
JCPV
334 select PINCTRL
335 select PINCTRL_AT91 if USE_OF
4af6fee1 336 help
929e994f
NF
337 This enables support for systems based on Atmel
338 AT91RM9200 and AT91SAM9* processors.
4af6fee1 339
ec9653b8
SA
340config ARCH_BCM2835
341 bool "Broadcom BCM2835 family"
805504ab 342 select ARCH_REQUIRE_GPIOLIB
ec9653b8
SA
343 select ARM_AMBA
344 select ARM_ERRATA_411920
345 select ARM_TIMER_SP804
346 select CLKDEV_LOOKUP
347 select COMMON_CLK
348 select CPU_V6
349 select GENERIC_CLOCKEVENTS
805504ab 350 select GENERIC_GPIO
ec9653b8 351 select MULTI_IRQ_HANDLER
805504ab
SW
352 select PINCTRL
353 select PINCTRL_BCM2835
ec9653b8
SA
354 select SPARSE_IRQ
355 select USE_OF
356 help
357 This enables support for the Broadcom BCM2835 SoC. This SoC is
358 use in the Raspberry Pi, and Roku 2 devices.
359
d94f944e
AV
360config ARCH_CNS3XXX
361 bool "Cavium Networks CNS3XXX family"
b1b3f49c 362 select ARM_GIC
00d2711d 363 select CPU_V6K
d94f944e 364 select GENERIC_CLOCKEVENTS
ce5ea9f3 365 select MIGHT_HAVE_CACHE_L2X0
0b05da72 366 select MIGHT_HAVE_PCI
5f32f7a0 367 select PCI_DOMAINS if PCI
d94f944e
AV
368 help
369 Support for Cavium Networks CNS3XXX platform.
370
93e22567
RK
371config ARCH_CLPS711X
372 bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
a3b8d4a5 373 select ARCH_REQUIRE_GPIOLIB
ea7d1bc9 374 select AUTO_ZRELADDR
93e22567
RK
375 select CLKDEV_LOOKUP
376 select COMMON_CLK
377 select CPU_ARM720T
4a8355c4 378 select GENERIC_CLOCKEVENTS
99f04c8f 379 select MULTI_IRQ_HANDLER
93e22567 380 select NEED_MACH_MEMORY_H
0d8be81c 381 select SPARSE_IRQ
93e22567
RK
382 help
383 Support for Cirrus Logic 711x/721x/731x based boards.
384
788c9700
RK
385config ARCH_GEMINI
386 bool "Cortina Systems Gemini"
788c9700 387 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 388 select ARCH_USES_GETTIMEOFFSET
b1b3f49c 389 select CPU_FA526
788c9700
RK
390 help
391 Support for the Cortina Systems Gemini family SoCs
392
156a0997
BS
393config ARCH_SIRF
394 bool "CSR SiRF"
f6387092 395 select ARCH_REQUIRE_GPIOLIB
198678b0 396 select COMMON_CLK
b1b3f49c 397 select GENERIC_CLOCKEVENTS
3a6cb8ce 398 select GENERIC_IRQ_CHIP
ce5ea9f3 399 select MIGHT_HAVE_CACHE_L2X0
b1b3f49c 400 select NO_IOPORT
cbd8d842
BS
401 select PINCTRL
402 select PINCTRL_SIRF
3a6cb8ce 403 select USE_OF
3a6cb8ce 404 help
156a0997 405 Support for CSR SiRFprimaII/Marco/Polo platforms
3a6cb8ce 406
1da177e4
LT
407config ARCH_EBSA110
408 bool "EBSA-110"
b1b3f49c 409 select ARCH_USES_GETTIMEOFFSET
c750815e 410 select CPU_SA110
f7e68bbf 411 select ISA
c334bc15 412 select NEED_MACH_IO_H
0cdc8b92 413 select NEED_MACH_MEMORY_H
b1b3f49c 414 select NO_IOPORT
1da177e4
LT
415 help
416 This is an evaluation board for the StrongARM processor available
f6c8965a 417 from Digital. It has limited hardware on-board, including an
1da177e4
LT
418 Ethernet interface, two PCMCIA sockets, two serial ports and a
419 parallel port.
420
e7736d47
LB
421config ARCH_EP93XX
422 bool "EP93xx-based"
b1b3f49c
RK
423 select ARCH_HAS_HOLES_MEMORYMODEL
424 select ARCH_REQUIRE_GPIOLIB
425 select ARCH_USES_GETTIMEOFFSET
e7736d47
LB
426 select ARM_AMBA
427 select ARM_VIC
6d803ba7 428 select CLKDEV_LOOKUP
b1b3f49c 429 select CPU_ARM920T
5725aeae 430 select NEED_MACH_MEMORY_H
e7736d47
LB
431 help
432 This enables support for the Cirrus EP93xx series of CPUs.
433
1da177e4
LT
434config ARCH_FOOTBRIDGE
435 bool "FootBridge"
c750815e 436 select CPU_SA110
1da177e4 437 select FOOTBRIDGE
4e8d7637 438 select GENERIC_CLOCKEVENTS
d0ee9f40 439 select HAVE_IDE
8ef6e620 440 select NEED_MACH_IO_H if !MMU
0cdc8b92 441 select NEED_MACH_MEMORY_H
f999b8bd
MM
442 help
443 Support for systems based on the DC21285 companion chip
444 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 445
1d3f33d5
SG
446config ARCH_MXS
447 bool "Freescale MXS-based"
1d3f33d5 448 select ARCH_REQUIRE_GPIOLIB
b9214b97 449 select CLKDEV_LOOKUP
5c61ddcf 450 select CLKSRC_MMIO
2664681f 451 select COMMON_CLK
b1b3f49c 452 select GENERIC_CLOCKEVENTS
6abda3e1 453 select HAVE_CLK_PREPARE
4e0a1b8c 454 select MULTI_IRQ_HANDLER
a0f5e363 455 select PINCTRL
c2668206 456 select SPARSE_IRQ
6c4d4efb 457 select USE_OF
1d3f33d5
SG
458 help
459 Support for Freescale MXS-based family of processors
460
4af6fee1
DS
461config ARCH_NETX
462 bool "Hilscher NetX based"
b1b3f49c 463 select ARM_VIC
234b6ced 464 select CLKSRC_MMIO
c750815e 465 select CPU_ARM926T
2fcfe6b8 466 select GENERIC_CLOCKEVENTS
f999b8bd 467 help
4af6fee1
DS
468 This enables support for systems based on the Hilscher NetX Soc
469
470config ARCH_H720X
471 bool "Hynix HMS720x-based"
b1b3f49c 472 select ARCH_USES_GETTIMEOFFSET
c750815e 473 select CPU_ARM720T
4af6fee1
DS
474 select ISA_DMA_API
475 help
476 This enables support for systems based on the Hynix HMS720x
477
3b938be6
RK
478config ARCH_IOP13XX
479 bool "IOP13xx-based"
480 depends on MMU
3b938be6 481 select ARCH_SUPPORTS_MSI
b1b3f49c 482 select CPU_XSC3
0cdc8b92 483 select NEED_MACH_MEMORY_H
13a5045d 484 select NEED_RET_TO_USER
b1b3f49c
RK
485 select PCI
486 select PLAT_IOP
487 select VMSPLIT_1G
3b938be6
RK
488 help
489 Support for Intel's IOP13XX (XScale) family of processors.
490
3f7e5815
LB
491config ARCH_IOP32X
492 bool "IOP32x-based"
a4f7e763 493 depends on MMU
b1b3f49c 494 select ARCH_REQUIRE_GPIOLIB
c750815e 495 select CPU_XSCALE
01464226 496 select NEED_MACH_GPIO_H
13a5045d 497 select NEED_RET_TO_USER
f7e68bbf 498 select PCI
b1b3f49c 499 select PLAT_IOP
f999b8bd 500 help
3f7e5815
LB
501 Support for Intel's 80219 and IOP32X (XScale) family of
502 processors.
503
504config ARCH_IOP33X
505 bool "IOP33x-based"
506 depends on MMU
b1b3f49c 507 select ARCH_REQUIRE_GPIOLIB
c750815e 508 select CPU_XSCALE
01464226 509 select NEED_MACH_GPIO_H
13a5045d 510 select NEED_RET_TO_USER
3f7e5815 511 select PCI
b1b3f49c 512 select PLAT_IOP
3f7e5815
LB
513 help
514 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 515
3b938be6
RK
516config ARCH_IXP4XX
517 bool "IXP4xx-based"
a4f7e763 518 depends on MMU
58af4a24 519 select ARCH_HAS_DMA_SET_COHERENT_MASK
b1b3f49c 520 select ARCH_REQUIRE_GPIOLIB
234b6ced 521 select CLKSRC_MMIO
c750815e 522 select CPU_XSCALE
b1b3f49c 523 select DMABOUNCE if PCI
3b938be6 524 select GENERIC_CLOCKEVENTS
0b05da72 525 select MIGHT_HAVE_PCI
c334bc15 526 select NEED_MACH_IO_H
c4713074 527 help
3b938be6 528 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 529
edabd38e
SB
530config ARCH_DOVE
531 bool "Marvell Dove"
edabd38e 532 select ARCH_REQUIRE_GPIOLIB
5b03df9a 533 select COMMON_CLK_DOVE
b1b3f49c 534 select CPU_V7
edabd38e 535 select GENERIC_CLOCKEVENTS
0f81bd43 536 select MIGHT_HAVE_PCI
9139acd1
SH
537 select PINCTRL
538 select PINCTRL_DOVE
abcda1dc 539 select PLAT_ORION_LEGACY
0f81bd43 540 select USB_ARCH_HAS_EHCI
edabd38e
SB
541 help
542 Support for the Marvell Dove SoC 88AP510
543
651c74c7
SB
544config ARCH_KIRKWOOD
545 bool "Marvell Kirkwood"
a8865655 546 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 547 select CPU_FEROCEON
651c74c7 548 select GENERIC_CLOCKEVENTS
b1b3f49c 549 select PCI
1dc831bf 550 select PCI_QUIRKS
f9e75922
AL
551 select PINCTRL
552 select PINCTRL_KIRKWOOD
abcda1dc 553 select PLAT_ORION_LEGACY
651c74c7
SB
554 help
555 Support for the following Marvell Kirkwood series SoCs:
556 88F6180, 88F6192 and 88F6281.
557
794d15b2
SS
558config ARCH_MV78XX0
559 bool "Marvell MV78xx0"
a8865655 560 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 561 select CPU_FEROCEON
794d15b2 562 select GENERIC_CLOCKEVENTS
b1b3f49c 563 select PCI
abcda1dc 564 select PLAT_ORION_LEGACY
794d15b2
SS
565 help
566 Support for the following Marvell MV78xx0 series SoCs:
567 MV781x0, MV782x0.
568
9dd0b194 569config ARCH_ORION5X
585cf175
TP
570 bool "Marvell Orion"
571 depends on MMU
a8865655 572 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 573 select CPU_FEROCEON
51cbff1d 574 select GENERIC_CLOCKEVENTS
b1b3f49c 575 select PCI
abcda1dc 576 select PLAT_ORION_LEGACY
585cf175 577 help
9dd0b194 578 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 579 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 580 Orion-2 (5281), Orion-1-90 (6183).
585cf175 581
788c9700 582config ARCH_MMP
2f7e8fae 583 bool "Marvell PXA168/910/MMP2"
788c9700 584 depends on MMU
788c9700 585 select ARCH_REQUIRE_GPIOLIB
6d803ba7 586 select CLKDEV_LOOKUP
b1b3f49c 587 select GENERIC_ALLOCATOR
788c9700 588 select GENERIC_CLOCKEVENTS
157d2644 589 select GPIO_PXA
c24b3114 590 select IRQ_DOMAIN
b1b3f49c 591 select NEED_MACH_GPIO_H
7c8f86a4 592 select PINCTRL
788c9700 593 select PLAT_PXA
0bd86961 594 select SPARSE_IRQ
788c9700 595 help
2f7e8fae 596 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
597
598config ARCH_KS8695
599 bool "Micrel/Kendin KS8695"
98830bc9 600 select ARCH_REQUIRE_GPIOLIB
c7e783d6 601 select CLKSRC_MMIO
b1b3f49c 602 select CPU_ARM922T
c7e783d6 603 select GENERIC_CLOCKEVENTS
b1b3f49c 604 select NEED_MACH_MEMORY_H
788c9700
RK
605 help
606 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
607 System-on-Chip devices.
608
788c9700
RK
609config ARCH_W90X900
610 bool "Nuvoton W90X900 CPU"
c52d3d68 611 select ARCH_REQUIRE_GPIOLIB
6d803ba7 612 select CLKDEV_LOOKUP
6fa5d5f7 613 select CLKSRC_MMIO
b1b3f49c 614 select CPU_ARM926T
58b5369e 615 select GENERIC_CLOCKEVENTS
788c9700 616 help
a8bc4ead 617 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
618 At present, the w90x900 has been renamed nuc900, regarding
619 the ARM series product line, you can login the following
620 link address to know more.
621
622 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
623 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 624
93e22567
RK
625config ARCH_LPC32XX
626 bool "NXP LPC32XX"
627 select ARCH_REQUIRE_GPIOLIB
628 select ARM_AMBA
629 select CLKDEV_LOOKUP
630 select CLKSRC_MMIO
631 select CPU_ARM926T
632 select GENERIC_CLOCKEVENTS
633 select HAVE_IDE
634 select HAVE_PWM
635 select USB_ARCH_HAS_OHCI
636 select USE_OF
637 help
638 Support for the NXP LPC32XX family of processors
639
c5f80065
EG
640config ARCH_TEGRA
641 bool "NVIDIA Tegra"
b1b3f49c 642 select ARCH_HAS_CPUFREQ
4073723a 643 select CLKDEV_LOOKUP
234b6ced 644 select CLKSRC_MMIO
b1b3f49c 645 select COMMON_CLK
c5f80065
EG
646 select GENERIC_CLOCKEVENTS
647 select GENERIC_GPIO
648 select HAVE_CLK
3b55658a 649 select HAVE_SMP
ce5ea9f3 650 select MIGHT_HAVE_CACHE_L2X0
c5a4d6b0 651 select SPARSE_IRQ
2c95b7e0 652 select USE_OF
c5f80065
EG
653 help
654 This enables support for NVIDIA Tegra based systems (Tegra APX,
655 Tegra 6xx and Tegra 2 series).
656
1da177e4 657config ARCH_PXA
2c8086a5 658 bool "PXA2xx/PXA3xx-based"
a4f7e763 659 depends on MMU
89c52ed4 660 select ARCH_HAS_CPUFREQ
b1b3f49c
RK
661 select ARCH_MTD_XIP
662 select ARCH_REQUIRE_GPIOLIB
663 select ARM_CPU_SUSPEND if PM
664 select AUTO_ZRELADDR
6d803ba7 665 select CLKDEV_LOOKUP
234b6ced 666 select CLKSRC_MMIO
981d0f39 667 select GENERIC_CLOCKEVENTS
157d2644 668 select GPIO_PXA
d0ee9f40 669 select HAVE_IDE
b1b3f49c 670 select MULTI_IRQ_HANDLER
01464226 671 select NEED_MACH_GPIO_H
b1b3f49c
RK
672 select PLAT_PXA
673 select SPARSE_IRQ
f999b8bd 674 help
2c8086a5 675 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 676
788c9700
RK
677config ARCH_MSM
678 bool "Qualcomm MSM"
923a081c 679 select ARCH_REQUIRE_GPIOLIB
bd32344a 680 select CLKDEV_LOOKUP
b1b3f49c
RK
681 select GENERIC_CLOCKEVENTS
682 select HAVE_CLK
49cbe786 683 help
4b53eb4f
DW
684 Support for Qualcomm MSM/QSD based systems. This runs on the
685 apps processor of the MSM/QSD and depends on a shared memory
686 interface to the modem processor which runs the baseband
687 stack and controls some vital subsystems
688 (clock and power control, etc).
49cbe786 689
c793c1b0 690config ARCH_SHMOBILE
6d72ad35 691 bool "Renesas SH-Mobile / R-Mobile"
5e93c6b4 692 select CLKDEV_LOOKUP
b1b3f49c
RK
693 select GENERIC_CLOCKEVENTS
694 select HAVE_CLK
aa3831cf 695 select HAVE_MACH_CLKDEV
3b55658a 696 select HAVE_SMP
ce5ea9f3 697 select MIGHT_HAVE_CACHE_L2X0
60f1435c 698 select MULTI_IRQ_HANDLER
0cdc8b92 699 select NEED_MACH_MEMORY_H
b1b3f49c
RK
700 select NO_IOPORT
701 select PM_GENERIC_DOMAINS if PM
702 select SPARSE_IRQ
c793c1b0 703 help
6d72ad35 704 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
c793c1b0 705
1da177e4
LT
706config ARCH_RPC
707 bool "RiscPC"
708 select ARCH_ACORN
a08b6b79 709 select ARCH_MAY_HAVE_PC_FDC
07f841b7 710 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 711 select ARCH_USES_GETTIMEOFFSET
b1b3f49c 712 select FIQ
d0ee9f40 713 select HAVE_IDE
b1b3f49c
RK
714 select HAVE_PATA_PLATFORM
715 select ISA_DMA_API
c334bc15 716 select NEED_MACH_IO_H
0cdc8b92 717 select NEED_MACH_MEMORY_H
b1b3f49c 718 select NO_IOPORT
1da177e4
LT
719 help
720 On the Acorn Risc-PC, Linux can support the internal IDE disk and
721 CD-ROM interface, serial and parallel port, and the floppy drive.
722
723config ARCH_SA1100
724 bool "SA1100-based"
89c52ed4 725 select ARCH_HAS_CPUFREQ
b1b3f49c
RK
726 select ARCH_MTD_XIP
727 select ARCH_REQUIRE_GPIOLIB
728 select ARCH_SPARSEMEM_ENABLE
729 select CLKDEV_LOOKUP
730 select CLKSRC_MMIO
1937f5b9 731 select CPU_FREQ
b1b3f49c 732 select CPU_SA1100
3e238be2 733 select GENERIC_CLOCKEVENTS
d0ee9f40 734 select HAVE_IDE
b1b3f49c 735 select ISA
01464226 736 select NEED_MACH_GPIO_H
0cdc8b92 737 select NEED_MACH_MEMORY_H
375dec92 738 select SPARSE_IRQ
f999b8bd
MM
739 help
740 Support for StrongARM 11x0 based boards.
1da177e4 741
b130d5c2
KK
742config ARCH_S3C24XX
743 bool "Samsung S3C24XX SoCs"
9d56c02a 744 select ARCH_HAS_CPUFREQ
5cfc8ee0 745 select ARCH_USES_GETTIMEOFFSET
b1b3f49c
RK
746 select CLKDEV_LOOKUP
747 select GENERIC_GPIO
748 select HAVE_CLK
20676c15 749 select HAVE_S3C2410_I2C if I2C
b130d5c2 750 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 751 select HAVE_S3C_RTC if RTC_CLASS
01464226 752 select NEED_MACH_GPIO_H
c334bc15 753 select NEED_MACH_IO_H
1da177e4 754 help
b130d5c2
KK
755 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
756 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
757 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
758 Samsung SMDK2410 development board (and derivatives).
63b1f51b 759
a08ab637
BD
760config ARCH_S3C64XX
761 bool "Samsung S3C64XX"
b1b3f49c
RK
762 select ARCH_HAS_CPUFREQ
763 select ARCH_REQUIRE_GPIOLIB
764 select ARCH_USES_GETTIMEOFFSET
89f0ce72 765 select ARM_VIC
b1b3f49c
RK
766 select CLKDEV_LOOKUP
767 select CPU_V6
a08ab637 768 select HAVE_CLK
b1b3f49c
RK
769 select HAVE_S3C2410_I2C if I2C
770 select HAVE_S3C2410_WATCHDOG if WATCHDOG
6700397a 771 select HAVE_TCM
b1b3f49c 772 select NEED_MACH_GPIO_H
89f0ce72 773 select NO_IOPORT
b1b3f49c
RK
774 select PLAT_SAMSUNG
775 select S3C_DEV_NAND
776 select S3C_GPIO_TRACK
89f0ce72 777 select SAMSUNG_CLKSRC
b1b3f49c 778 select SAMSUNG_GPIOLIB_4BIT
89f0ce72 779 select SAMSUNG_IRQ_VIC_TIMER
89f0ce72 780 select USB_ARCH_HAS_OHCI
a08ab637
BD
781 help
782 Samsung S3C64XX series based systems
783
49b7a491
KK
784config ARCH_S5P64X0
785 bool "Samsung S5P6440 S5P6450"
d8b22d25 786 select CLKDEV_LOOKUP
0665ccc4 787 select CLKSRC_MMIO
b1b3f49c 788 select CPU_V6
9e65bbf2 789 select GENERIC_CLOCKEVENTS
b1b3f49c
RK
790 select GENERIC_GPIO
791 select HAVE_CLK
20676c15 792 select HAVE_S3C2410_I2C if I2C
b1b3f49c 793 select HAVE_S3C2410_WATCHDOG if WATCHDOG
754961a8 794 select HAVE_S3C_RTC if RTC_CLASS
01464226 795 select NEED_MACH_GPIO_H
c4ffccdd 796 help
49b7a491
KK
797 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
798 SMDK6450.
c4ffccdd 799
acc84707
MS
800config ARCH_S5PC100
801 bool "Samsung S5PC100"
b1b3f49c 802 select ARCH_USES_GETTIMEOFFSET
29e8eb0f 803 select CLKDEV_LOOKUP
5a7652f2 804 select CPU_V7
b1b3f49c
RK
805 select GENERIC_GPIO
806 select HAVE_CLK
20676c15 807 select HAVE_S3C2410_I2C if I2C
c39d8d55 808 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 809 select HAVE_S3C_RTC if RTC_CLASS
01464226 810 select NEED_MACH_GPIO_H
5a7652f2 811 help
acc84707 812 Samsung S5PC100 series based systems
5a7652f2 813
170f4e42
KK
814config ARCH_S5PV210
815 bool "Samsung S5PV210/S5PC110"
b1b3f49c 816 select ARCH_HAS_CPUFREQ
0f75a96b 817 select ARCH_HAS_HOLES_MEMORYMODEL
b1b3f49c 818 select ARCH_SPARSEMEM_ENABLE
b2a9dd46 819 select CLKDEV_LOOKUP
0665ccc4 820 select CLKSRC_MMIO
b1b3f49c 821 select CPU_V7
9e65bbf2 822 select GENERIC_CLOCKEVENTS
b1b3f49c
RK
823 select GENERIC_GPIO
824 select HAVE_CLK
20676c15 825 select HAVE_S3C2410_I2C if I2C
c39d8d55 826 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 827 select HAVE_S3C_RTC if RTC_CLASS
01464226 828 select NEED_MACH_GPIO_H
0cdc8b92 829 select NEED_MACH_MEMORY_H
170f4e42
KK
830 help
831 Samsung S5PV210/S5PC110 series based systems
832
83014579 833config ARCH_EXYNOS
93e22567 834 bool "Samsung EXYNOS"
b1b3f49c 835 select ARCH_HAS_CPUFREQ
0f75a96b 836 select ARCH_HAS_HOLES_MEMORYMODEL
b1b3f49c 837 select ARCH_SPARSEMEM_ENABLE
badc4f2d 838 select CLKDEV_LOOKUP
b1b3f49c 839 select CPU_V7
cc0e72b8 840 select GENERIC_CLOCKEVENTS
b1b3f49c
RK
841 select GENERIC_GPIO
842 select HAVE_CLK
20676c15 843 select HAVE_S3C2410_I2C if I2C
c39d8d55 844 select HAVE_S3C2410_WATCHDOG if WATCHDOG
b1b3f49c 845 select HAVE_S3C_RTC if RTC_CLASS
01464226 846 select NEED_MACH_GPIO_H
0cdc8b92 847 select NEED_MACH_MEMORY_H
cc0e72b8 848 help
83014579 849 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
cc0e72b8 850
1da177e4
LT
851config ARCH_SHARK
852 bool "Shark"
b1b3f49c 853 select ARCH_USES_GETTIMEOFFSET
c750815e 854 select CPU_SA110
f7e68bbf
RK
855 select ISA
856 select ISA_DMA
0cdc8b92 857 select NEED_MACH_MEMORY_H
b1b3f49c
RK
858 select PCI
859 select ZONE_DMA
f999b8bd
MM
860 help
861 Support for the StrongARM based Digital DNARD machine, also known
862 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4 863
d98aac75
LW
864config ARCH_U300
865 bool "ST-Ericsson U300 Series"
866 depends on MMU
b1b3f49c 867 select ARCH_REQUIRE_GPIOLIB
d98aac75 868 select ARM_AMBA
5485c1e0 869 select ARM_PATCH_PHYS_VIRT
d98aac75 870 select ARM_VIC
6d803ba7 871 select CLKDEV_LOOKUP
b1b3f49c 872 select CLKSRC_MMIO
50667d63 873 select COMMON_CLK
b1b3f49c
RK
874 select CPU_ARM926T
875 select GENERIC_CLOCKEVENTS
d98aac75 876 select GENERIC_GPIO
b1b3f49c 877 select HAVE_TCM
a4fe292f 878 select SPARSE_IRQ
d98aac75
LW
879 help
880 Support for ST-Ericsson U300 series mobile platforms.
881
ccf50e23
RK
882config ARCH_U8500
883 bool "ST-Ericsson U8500 Series"
67ae14fc 884 depends on MMU
b1b3f49c
RK
885 select ARCH_HAS_CPUFREQ
886 select ARCH_REQUIRE_GPIOLIB
ccf50e23 887 select ARM_AMBA
6d803ba7 888 select CLKDEV_LOOKUP
b1b3f49c
RK
889 select CPU_V7
890 select GENERIC_CLOCKEVENTS
3b55658a 891 select HAVE_SMP
ce5ea9f3 892 select MIGHT_HAVE_CACHE_L2X0
c3b9d1db 893 select SPARSE_IRQ
ccf50e23
RK
894 help
895 Support for ST-Ericsson's Ux500 architecture
896
897config ARCH_NOMADIK
898 bool "STMicroelectronics Nomadik"
b1b3f49c 899 select ARCH_REQUIRE_GPIOLIB
ccf50e23
RK
900 select ARM_AMBA
901 select ARM_VIC
4a31bd28 902 select COMMON_CLK
b1b3f49c 903 select CPU_ARM926T
ccf50e23 904 select GENERIC_CLOCKEVENTS
b1b3f49c 905 select MIGHT_HAVE_CACHE_L2X0
0fa7be40 906 select PINCTRL
2601ccfe 907 select PINCTRL_STN8815
c3b9d1db 908 select SPARSE_IRQ
ccf50e23
RK
909 help
910 Support for the Nomadik platform by ST-Ericsson
911
93e22567
RK
912config PLAT_SPEAR
913 bool "ST SPEAr"
42099322 914 select ARCH_HAS_CPUFREQ
93e22567
RK
915 select ARCH_REQUIRE_GPIOLIB
916 select ARM_AMBA
917 select CLKDEV_LOOKUP
918 select CLKSRC_MMIO
919 select COMMON_CLK
920 select GENERIC_CLOCKEVENTS
921 select HAVE_CLK
922 help
923 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
924
7c6337e2
KH
925config ARCH_DAVINCI
926 bool "TI DaVinci"
b1b3f49c 927 select ARCH_HAS_HOLES_MEMORYMODEL
dce1115b 928 select ARCH_REQUIRE_GPIOLIB
6d803ba7 929 select CLKDEV_LOOKUP
20e9969b 930 select GENERIC_ALLOCATOR
b1b3f49c 931 select GENERIC_CLOCKEVENTS
dc7ad3b3 932 select GENERIC_IRQ_CHIP
b1b3f49c 933 select HAVE_IDE
01464226 934 select NEED_MACH_GPIO_H
689e331f 935 select USE_OF
b1b3f49c 936 select ZONE_DMA
7c6337e2
KH
937 help
938 Support for TI's DaVinci platform.
939
3b938be6
RK
940config ARCH_OMAP
941 bool "TI OMAP"
00a36698 942 depends on MMU
89c52ed4 943 select ARCH_HAS_CPUFREQ
9af915da 944 select ARCH_HAS_HOLES_MEMORYMODEL
cee37e50 945 select ARCH_REQUIRE_GPIOLIB
d6e15d78 946 select CLKSRC_MMIO
cee37e50 947 select GENERIC_CLOCKEVENTS
cee37e50 948 select HAVE_CLK
949 help
6e457bb0 950 Support for TI's OMAP platform (OMAP1/2/3/4).
cee37e50 951
6f35f9a9 952config ARCH_VT8500_SINGLE
21f47fbc 953 bool "VIA/WonderMedia 85xx"
21f47fbc 954 select ARCH_HAS_CPUFREQ
21f47fbc 955 select ARCH_REQUIRE_GPIOLIB
b1b3f49c 956 select CLKDEV_LOOKUP
e9a91de7 957 select COMMON_CLK
b1b3f49c
RK
958 select CPU_ARM926T
959 select GENERIC_CLOCKEVENTS
960 select GENERIC_GPIO
e9a91de7 961 select HAVE_CLK
0c464d58
TP
962 select MULTI_IRQ_HANDLER
963 select SPARSE_IRQ
b1b3f49c 964 select USE_OF
21f47fbc
AC
965 help
966 Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
02c981c0 967
1da177e4
LT
968endchoice
969
387798b3
RH
970menu "Multiple platform selection"
971 depends on ARCH_MULTIPLATFORM
972
973comment "CPU Core family selection"
974
975config ARCH_MULTI_V4
976 bool "ARMv4 based platforms (FA526, StrongARM)"
387798b3 977 depends on !ARCH_MULTI_V6_V7
b1b3f49c 978 select ARCH_MULTI_V4_V5
387798b3
RH
979
980config ARCH_MULTI_V4T
981 bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
387798b3 982 depends on !ARCH_MULTI_V6_V7
b1b3f49c 983 select ARCH_MULTI_V4_V5
387798b3
RH
984
985config ARCH_MULTI_V5
986 bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
387798b3 987 depends on !ARCH_MULTI_V6_V7
b1b3f49c 988 select ARCH_MULTI_V4_V5
387798b3
RH
989
990config ARCH_MULTI_V4_V5
991 bool
992
993config ARCH_MULTI_V6
994 bool "ARMv6 based platforms (ARM11, Scorpion, ...)"
387798b3 995 select ARCH_MULTI_V6_V7
b1b3f49c 996 select CPU_V6
387798b3
RH
997
998config ARCH_MULTI_V7
999 bool "ARMv7 based platforms (Cortex-A, PJ4, Krait)"
387798b3
RH
1000 default y
1001 select ARCH_MULTI_V6_V7
b1b3f49c
RK
1002 select ARCH_VEXPRESS
1003 select CPU_V7
387798b3
RH
1004
1005config ARCH_MULTI_V6_V7
1006 bool
1007
1008config ARCH_MULTI_CPU_AUTO
1009 def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
1010 select ARCH_MULTI_V5
1011
1012endmenu
1013
ccf50e23
RK
1014#
1015# This is sorted alphabetically by mach-* pathname. However, plat-*
1016# Kconfigs may be included either alphabetically (according to the
1017# plat- suffix) or along side the corresponding mach-* source.
1018#
3e93a22b
GC
1019source "arch/arm/mach-mvebu/Kconfig"
1020
95b8f20f
RK
1021source "arch/arm/mach-at91/Kconfig"
1022
8ac49e04
CD
1023source "arch/arm/mach-bcm/Kconfig"
1024
1da177e4
LT
1025source "arch/arm/mach-clps711x/Kconfig"
1026
d94f944e
AV
1027source "arch/arm/mach-cns3xxx/Kconfig"
1028
95b8f20f
RK
1029source "arch/arm/mach-davinci/Kconfig"
1030
1031source "arch/arm/mach-dove/Kconfig"
1032
e7736d47
LB
1033source "arch/arm/mach-ep93xx/Kconfig"
1034
1da177e4
LT
1035source "arch/arm/mach-footbridge/Kconfig"
1036
59d3a193
PZ
1037source "arch/arm/mach-gemini/Kconfig"
1038
95b8f20f
RK
1039source "arch/arm/mach-h720x/Kconfig"
1040
387798b3
RH
1041source "arch/arm/mach-highbank/Kconfig"
1042
1da177e4
LT
1043source "arch/arm/mach-integrator/Kconfig"
1044
3f7e5815
LB
1045source "arch/arm/mach-iop32x/Kconfig"
1046
1047source "arch/arm/mach-iop33x/Kconfig"
1da177e4 1048
285f5fa7
DW
1049source "arch/arm/mach-iop13xx/Kconfig"
1050
1da177e4
LT
1051source "arch/arm/mach-ixp4xx/Kconfig"
1052
95b8f20f
RK
1053source "arch/arm/mach-kirkwood/Kconfig"
1054
1055source "arch/arm/mach-ks8695/Kconfig"
1056
95b8f20f
RK
1057source "arch/arm/mach-msm/Kconfig"
1058
794d15b2
SS
1059source "arch/arm/mach-mv78xx0/Kconfig"
1060
3995eb82 1061source "arch/arm/mach-imx/Kconfig"
1da177e4 1062
1d3f33d5
SG
1063source "arch/arm/mach-mxs/Kconfig"
1064
95b8f20f 1065source "arch/arm/mach-netx/Kconfig"
49cbe786 1066
95b8f20f 1067source "arch/arm/mach-nomadik/Kconfig"
95b8f20f 1068
d48af15e
TL
1069source "arch/arm/plat-omap/Kconfig"
1070
1071source "arch/arm/mach-omap1/Kconfig"
1da177e4 1072
1dbae815
TL
1073source "arch/arm/mach-omap2/Kconfig"
1074
9dd0b194 1075source "arch/arm/mach-orion5x/Kconfig"
585cf175 1076
387798b3
RH
1077source "arch/arm/mach-picoxcell/Kconfig"
1078
95b8f20f
RK
1079source "arch/arm/mach-pxa/Kconfig"
1080source "arch/arm/plat-pxa/Kconfig"
585cf175 1081
95b8f20f
RK
1082source "arch/arm/mach-mmp/Kconfig"
1083
1084source "arch/arm/mach-realview/Kconfig"
1085
1086source "arch/arm/mach-sa1100/Kconfig"
edabd38e 1087
cf383678 1088source "arch/arm/plat-samsung/Kconfig"
a21765a7
BD
1089source "arch/arm/plat-s3c24xx/Kconfig"
1090
387798b3
RH
1091source "arch/arm/mach-socfpga/Kconfig"
1092
cee37e50 1093source "arch/arm/plat-spear/Kconfig"
a21765a7 1094
85fd6d63 1095source "arch/arm/mach-s3c24xx/Kconfig"
b130d5c2 1096if ARCH_S3C24XX
a21765a7
BD
1097source "arch/arm/mach-s3c2412/Kconfig"
1098source "arch/arm/mach-s3c2440/Kconfig"
a21765a7 1099endif
1da177e4 1100
a08ab637 1101if ARCH_S3C64XX
431107ea 1102source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
1103endif
1104
49b7a491 1105source "arch/arm/mach-s5p64x0/Kconfig"
c4ffccdd 1106
5a7652f2 1107source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 1108
170f4e42
KK
1109source "arch/arm/mach-s5pv210/Kconfig"
1110
83014579 1111source "arch/arm/mach-exynos/Kconfig"
cc0e72b8 1112
882d01f9 1113source "arch/arm/mach-shmobile/Kconfig"
52c543f9 1114
3b52634f
MR
1115source "arch/arm/mach-sunxi/Kconfig"
1116
156a0997
BS
1117source "arch/arm/mach-prima2/Kconfig"
1118
c5f80065
EG
1119source "arch/arm/mach-tegra/Kconfig"
1120
95b8f20f 1121source "arch/arm/mach-u300/Kconfig"
1da177e4 1122
95b8f20f 1123source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
1124
1125source "arch/arm/mach-versatile/Kconfig"
1126
ceade897 1127source "arch/arm/mach-vexpress/Kconfig"
420c34e4 1128source "arch/arm/plat-versatile/Kconfig"
ceade897 1129
6f35f9a9
TP
1130source "arch/arm/mach-vt8500/Kconfig"
1131
7ec80ddf 1132source "arch/arm/mach-w90x900/Kconfig"
1133
9a45eb69
JC
1134source "arch/arm/mach-zynq/Kconfig"
1135
1da177e4
LT
1136# Definitions to make life easier
1137config ARCH_ACORN
1138 bool
1139
7ae1f7ec
LB
1140config PLAT_IOP
1141 bool
469d3044 1142 select GENERIC_CLOCKEVENTS
7ae1f7ec 1143
69b02f6a
LB
1144config PLAT_ORION
1145 bool
bfe45e0b 1146 select CLKSRC_MMIO
b1b3f49c 1147 select COMMON_CLK
dc7ad3b3 1148 select GENERIC_IRQ_CHIP
278b45b0 1149 select IRQ_DOMAIN
69b02f6a 1150
abcda1dc
TP
1151config PLAT_ORION_LEGACY
1152 bool
1153 select PLAT_ORION
1154
bd5ce433
EM
1155config PLAT_PXA
1156 bool
1157
f4b8b319
RK
1158config PLAT_VERSATILE
1159 bool
1160
e3887714
RK
1161config ARM_TIMER_SP804
1162 bool
bfe45e0b 1163 select CLKSRC_MMIO
a7bf6162 1164 select HAVE_SCHED_CLOCK
e3887714 1165
1da177e4
LT
1166source arch/arm/mm/Kconfig
1167
958cab0f
RK
1168config ARM_NR_BANKS
1169 int
1170 default 16 if ARCH_EP93XX
1171 default 8
1172
afe4b25e
LB
1173config IWMMXT
1174 bool "Enable iWMMXt support"
ef6c8445 1175 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
49ea7fc0 1176 default y if PXA27x || PXA3xx || ARCH_MMP
afe4b25e
LB
1177 help
1178 Enable support for iWMMXt context switching at run time if
1179 running on a CPU that supports it.
1180
1da177e4
LT
1181config XSCALE_PMU
1182 bool
bfc994b5 1183 depends on CPU_XSCALE
1da177e4
LT
1184 default y
1185
52108641 1186config MULTI_IRQ_HANDLER
1187 bool
1188 help
1189 Allow each machine to specify it's own IRQ handler at run time.
1190
3b93e7b0
HC
1191if !MMU
1192source "arch/arm/Kconfig-nommu"
1193endif
1194
f0c4b8d6
WD
1195config ARM_ERRATA_326103
1196 bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1197 depends on CPU_V6
1198 help
1199 Executing a SWP instruction to read-only memory does not set bit 11
1200 of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1201 treat the access as a read, preventing a COW from occurring and
1202 causing the faulting task to livelock.
1203
9cba3ccc
CM
1204config ARM_ERRATA_411920
1205 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1206 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1207 help
1208 Invalidation of the Instruction Cache operation can
1209 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1210 It does not affect the MPCore. This option enables the ARM Ltd.
1211 recommended workaround.
1212
7ce236fc
CM
1213config ARM_ERRATA_430973
1214 bool "ARM errata: Stale prediction on replaced interworking branch"
1215 depends on CPU_V7
1216 help
1217 This option enables the workaround for the 430973 Cortex-A8
1218 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1219 interworking branch is replaced with another code sequence at the
1220 same virtual address, whether due to self-modifying code or virtual
1221 to physical address re-mapping, Cortex-A8 does not recover from the
1222 stale interworking branch prediction. This results in Cortex-A8
1223 executing the new code sequence in the incorrect ARM or Thumb state.
1224 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1225 and also flushes the branch target cache at every context switch.
1226 Note that setting specific bits in the ACTLR register may not be
1227 available in non-secure mode.
1228
855c551f
CM
1229config ARM_ERRATA_458693
1230 bool "ARM errata: Processor deadlock when a false hazard is created"
1231 depends on CPU_V7
62e4d357 1232 depends on !ARCH_MULTIPLATFORM
855c551f
CM
1233 help
1234 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1235 erratum. For very specific sequences of memory operations, it is
1236 possible for a hazard condition intended for a cache line to instead
1237 be incorrectly associated with a different cache line. This false
1238 hazard might then cause a processor deadlock. The workaround enables
1239 the L1 caching of the NEON accesses and disables the PLD instruction
1240 in the ACTLR register. Note that setting specific bits in the ACTLR
1241 register may not be available in non-secure mode.
1242
0516e464
CM
1243config ARM_ERRATA_460075
1244 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1245 depends on CPU_V7
62e4d357 1246 depends on !ARCH_MULTIPLATFORM
0516e464
CM
1247 help
1248 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1249 erratum. Any asynchronous access to the L2 cache may encounter a
1250 situation in which recent store transactions to the L2 cache are lost
1251 and overwritten with stale memory contents from external memory. The
1252 workaround disables the write-allocate mode for the L2 cache via the
1253 ACTLR register. Note that setting specific bits in the ACTLR register
1254 may not be available in non-secure mode.
1255
9f05027c
WD
1256config ARM_ERRATA_742230
1257 bool "ARM errata: DMB operation may be faulty"
1258 depends on CPU_V7 && SMP
62e4d357 1259 depends on !ARCH_MULTIPLATFORM
9f05027c
WD
1260 help
1261 This option enables the workaround for the 742230 Cortex-A9
1262 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1263 between two write operations may not ensure the correct visibility
1264 ordering of the two writes. This workaround sets a specific bit in
1265 the diagnostic register of the Cortex-A9 which causes the DMB
1266 instruction to behave as a DSB, ensuring the correct behaviour of
1267 the two writes.
1268
a672e99b
WD
1269config ARM_ERRATA_742231
1270 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1271 depends on CPU_V7 && SMP
62e4d357 1272 depends on !ARCH_MULTIPLATFORM
a672e99b
WD
1273 help
1274 This option enables the workaround for the 742231 Cortex-A9
1275 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1276 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1277 accessing some data located in the same cache line, may get corrupted
1278 data due to bad handling of the address hazard when the line gets
1279 replaced from one of the CPUs at the same time as another CPU is
1280 accessing it. This workaround sets specific bits in the diagnostic
1281 register of the Cortex-A9 which reduces the linefill issuing
1282 capabilities of the processor.
1283
9e65582a 1284config PL310_ERRATA_588369
fa0ce403 1285 bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
2839e06c 1286 depends on CACHE_L2X0
9e65582a
SS
1287 help
1288 The PL310 L2 cache controller implements three types of Clean &
1289 Invalidate maintenance operations: by Physical Address
1290 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1291 They are architecturally defined to behave as the execution of a
1292 clean operation followed immediately by an invalidate operation,
1293 both performing to the same memory location. This functionality
1294 is not correctly implemented in PL310 as clean lines are not
2839e06c 1295 invalidated as a result of these operations.
cdf357f1
WD
1296
1297config ARM_ERRATA_720789
1298 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
e66dc745 1299 depends on CPU_V7
cdf357f1
WD
1300 help
1301 This option enables the workaround for the 720789 Cortex-A9 (prior to
1302 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1303 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1304 As a consequence of this erratum, some TLB entries which should be
1305 invalidated are not, resulting in an incoherency in the system page
1306 tables. The workaround changes the TLB flushing routines to invalidate
1307 entries regardless of the ASID.
475d92fc 1308
1f0090a1 1309config PL310_ERRATA_727915
fa0ce403 1310 bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
1f0090a1
RK
1311 depends on CACHE_L2X0
1312 help
1313 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1314 operation (offset 0x7FC). This operation runs in background so that
1315 PL310 can handle normal accesses while it is in progress. Under very
1316 rare circumstances, due to this erratum, write data can be lost when
1317 PL310 treats a cacheable write transaction during a Clean &
1318 Invalidate by Way operation.
1319
475d92fc
WD
1320config ARM_ERRATA_743622
1321 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1322 depends on CPU_V7
62e4d357 1323 depends on !ARCH_MULTIPLATFORM
475d92fc
WD
1324 help
1325 This option enables the workaround for the 743622 Cortex-A9
efbc74ac 1326 (r2p*) erratum. Under very rare conditions, a faulty
475d92fc
WD
1327 optimisation in the Cortex-A9 Store Buffer may lead to data
1328 corruption. This workaround sets a specific bit in the diagnostic
1329 register of the Cortex-A9 which disables the Store Buffer
1330 optimisation, preventing the defect from occurring. This has no
1331 visible impact on the overall performance or power consumption of the
1332 processor.
1333
9a27c27c
WD
1334config ARM_ERRATA_751472
1335 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
ba90c516 1336 depends on CPU_V7
62e4d357 1337 depends on !ARCH_MULTIPLATFORM
9a27c27c
WD
1338 help
1339 This option enables the workaround for the 751472 Cortex-A9 (prior
1340 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1341 completion of a following broadcasted operation if the second
1342 operation is received by a CPU before the ICIALLUIS has completed,
1343 potentially leading to corrupted entries in the cache or TLB.
1344
fa0ce403
WD
1345config PL310_ERRATA_753970
1346 bool "PL310 errata: cache sync operation may be faulty"
885028e4
SK
1347 depends on CACHE_PL310
1348 help
1349 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1350
1351 Under some condition the effect of cache sync operation on
1352 the store buffer still remains when the operation completes.
1353 This means that the store buffer is always asked to drain and
1354 this prevents it from merging any further writes. The workaround
1355 is to replace the normal offset of cache sync operation (0x730)
1356 by another offset targeting an unmapped PL310 register 0x740.
1357 This has the same effect as the cache sync operation: store buffer
1358 drain and waiting for all buffers empty.
1359
fcbdc5fe
WD
1360config ARM_ERRATA_754322
1361 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1362 depends on CPU_V7
1363 help
1364 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1365 r3p*) erratum. A speculative memory access may cause a page table walk
1366 which starts prior to an ASID switch but completes afterwards. This
1367 can populate the micro-TLB with a stale entry which may be hit with
1368 the new ASID. This workaround places two dsb instructions in the mm
1369 switching code so that no page table walks can cross the ASID switch.
1370
5dab26af
WD
1371config ARM_ERRATA_754327
1372 bool "ARM errata: no automatic Store Buffer drain"
1373 depends on CPU_V7 && SMP
1374 help
1375 This option enables the workaround for the 754327 Cortex-A9 (prior to
1376 r2p0) erratum. The Store Buffer does not have any automatic draining
1377 mechanism and therefore a livelock may occur if an external agent
1378 continuously polls a memory location waiting to observe an update.
1379 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1380 written polling loops from denying visibility of updates to memory.
1381
145e10e1
CM
1382config ARM_ERRATA_364296
1383 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1384 depends on CPU_V6 && !SMP
1385 help
1386 This options enables the workaround for the 364296 ARM1136
1387 r0p2 erratum (possible cache data corruption with
1388 hit-under-miss enabled). It sets the undocumented bit 31 in
1389 the auxiliary control register and the FI bit in the control
1390 register, thus disabling hit-under-miss without putting the
1391 processor into full low interrupt latency mode. ARM11MPCore
1392 is not affected.
1393
f630c1bd
WD
1394config ARM_ERRATA_764369
1395 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1396 depends on CPU_V7 && SMP
1397 help
1398 This option enables the workaround for erratum 764369
1399 affecting Cortex-A9 MPCore with two or more processors (all
1400 current revisions). Under certain timing circumstances, a data
1401 cache line maintenance operation by MVA targeting an Inner
1402 Shareable memory region may fail to proceed up to either the
1403 Point of Coherency or to the Point of Unification of the
1404 system. This workaround adds a DSB instruction before the
1405 relevant cache maintenance functions and sets a specific bit
1406 in the diagnostic control register of the SCU.
1407
11ed0ba1
WD
1408config PL310_ERRATA_769419
1409 bool "PL310 errata: no automatic Store Buffer drain"
1410 depends on CACHE_L2X0
1411 help
1412 On revisions of the PL310 prior to r3p2, the Store Buffer does
1413 not automatically drain. This can cause normal, non-cacheable
1414 writes to be retained when the memory system is idle, leading
1415 to suboptimal I/O performance for drivers using coherent DMA.
1416 This option adds a write barrier to the cpu_idle loop so that,
1417 on systems with an outer cache, the store buffer is drained
1418 explicitly.
1419
7253b85c
SH
1420config ARM_ERRATA_775420
1421 bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
1422 depends on CPU_V7
1423 help
1424 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
1425 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
1426 operation aborts with MMU exception, it might cause the processor
1427 to deadlock. This workaround puts DSB before executing ISB if
1428 an abort may occur on cache maintenance.
1429
1da177e4
LT
1430endmenu
1431
1432source "arch/arm/common/Kconfig"
1433
1da177e4
LT
1434menu "Bus support"
1435
1436config ARM_AMBA
1437 bool
1438
1439config ISA
1440 bool
1da177e4
LT
1441 help
1442 Find out whether you have ISA slots on your motherboard. ISA is the
1443 name of a bus system, i.e. the way the CPU talks to the other stuff
1444 inside your box. Other bus systems are PCI, EISA, MicroChannel
1445 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1446 newer boards don't support it. If you have ISA, say Y, otherwise N.
1447
065909b9 1448# Select ISA DMA controller support
1da177e4
LT
1449config ISA_DMA
1450 bool
065909b9 1451 select ISA_DMA_API
1da177e4 1452
a5d533ee
AB
1453config ARCH_NO_VIRT_TO_BUS
1454 def_bool y
1455 depends on !ARCH_RPC && !ARCH_NETWINDER && !ARCH_SHARK
1456
065909b9 1457# Select ISA DMA interface
5cae841b
AV
1458config ISA_DMA_API
1459 bool
5cae841b 1460
1da177e4 1461config PCI
0b05da72 1462 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1463 help
1464 Find out whether you have a PCI motherboard. PCI is the name of a
1465 bus system, i.e. the way the CPU talks to the other stuff inside
1466 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1467 VESA. If you have PCI, say Y, otherwise N.
1468
52882173
AV
1469config PCI_DOMAINS
1470 bool
1471 depends on PCI
1472
b080ac8a
MRJ
1473config PCI_NANOENGINE
1474 bool "BSE nanoEngine PCI support"
1475 depends on SA1100_NANOENGINE
1476 help
1477 Enable PCI on the BSE nanoEngine board.
1478
36e23590
MW
1479config PCI_SYSCALL
1480 def_bool PCI
1481
1da177e4
LT
1482# Select the host bridge type
1483config PCI_HOST_VIA82C505
1484 bool
1485 depends on PCI && ARCH_SHARK
1486 default y
1487
a0113a99
MR
1488config PCI_HOST_ITE8152
1489 bool
1490 depends on PCI && MACH_ARMCORE
1491 default y
1492 select DMABOUNCE
1493
1da177e4
LT
1494source "drivers/pci/Kconfig"
1495
1496source "drivers/pcmcia/Kconfig"
1497
1498endmenu
1499
1500menu "Kernel Features"
1501
3b55658a
DM
1502config HAVE_SMP
1503 bool
1504 help
1505 This option should be selected by machines which have an SMP-
1506 capable CPU.
1507
1508 The only effect of this option is to make the SMP-related
1509 options available to the user for configuration.
1510
1da177e4 1511config SMP
bb2d8130 1512 bool "Symmetric Multi-Processing"
fbb4ddac 1513 depends on CPU_V6K || CPU_V7
bc28248e 1514 depends on GENERIC_CLOCKEVENTS
3b55658a 1515 depends on HAVE_SMP
9934ebb8 1516 depends on MMU
89c3dedf 1517 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
b1b3f49c 1518 select USE_GENERIC_SMP_HELPERS
1da177e4
LT
1519 help
1520 This enables support for systems with more than one CPU. If you have
1521 a system with only one CPU, like most personal computers, say N. If
1522 you have a system with more than one CPU, say Y.
1523
1524 If you say N here, the kernel will run on single and multiprocessor
1525 machines, but will use only one CPU of a multiprocessor machine. If
1526 you say Y here, the kernel will run on many, but not all, single
1527 processor machines. On a single processor machine, the kernel will
1528 run faster if you say N here.
1529
395cf969 1530 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1531 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1532 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1533
1534 If you don't know what to do here, say N.
1535
f00ec48f
RK
1536config SMP_ON_UP
1537 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1538 depends on EXPERIMENTAL
4d2692a7 1539 depends on SMP && !XIP_KERNEL
f00ec48f
RK
1540 default y
1541 help
1542 SMP kernels contain instructions which fail on non-SMP processors.
1543 Enabling this option allows the kernel to modify itself to make
1544 these instructions safe. Disabling it allows about 1K of space
1545 savings.
1546
1547 If you don't know what to do here, say Y.
1548
c9018aab
VG
1549config ARM_CPU_TOPOLOGY
1550 bool "Support cpu topology definition"
1551 depends on SMP && CPU_V7
1552 default y
1553 help
1554 Support ARM cpu topology definition. The MPIDR register defines
1555 affinity between processors which is then used to describe the cpu
1556 topology of an ARM System.
1557
1558config SCHED_MC
1559 bool "Multi-core scheduler support"
1560 depends on ARM_CPU_TOPOLOGY
1561 help
1562 Multi-core scheduler support improves the CPU scheduler's decision
1563 making when dealing with multi-core CPU chips at a cost of slightly
1564 increased overhead in some places. If unsure say N here.
1565
1566config SCHED_SMT
1567 bool "SMT scheduler support"
1568 depends on ARM_CPU_TOPOLOGY
1569 help
1570 Improves the CPU scheduler's decision making when dealing with
1571 MultiThreading at a cost of slightly increased overhead in some
1572 places. If unsure say N here.
1573
a8cbcd92
RK
1574config HAVE_ARM_SCU
1575 bool
a8cbcd92
RK
1576 help
1577 This option enables support for the ARM system coherency unit
1578
022c03a2
MZ
1579config ARM_ARCH_TIMER
1580 bool "Architected timer support"
1581 depends on CPU_V7
1582 help
1583 This option enables support for the ARM architected timer
1584
f32f4ce2
RK
1585config HAVE_ARM_TWD
1586 bool
1587 depends on SMP
1588 help
1589 This options enables support for the ARM timer and watchdog unit
1590
8d5796d2
LB
1591choice
1592 prompt "Memory split"
1593 default VMSPLIT_3G
1594 help
1595 Select the desired split between kernel and user memory.
1596
1597 If you are not absolutely sure what you are doing, leave this
1598 option alone!
1599
1600 config VMSPLIT_3G
1601 bool "3G/1G user/kernel split"
1602 config VMSPLIT_2G
1603 bool "2G/2G user/kernel split"
1604 config VMSPLIT_1G
1605 bool "1G/3G user/kernel split"
1606endchoice
1607
1608config PAGE_OFFSET
1609 hex
1610 default 0x40000000 if VMSPLIT_1G
1611 default 0x80000000 if VMSPLIT_2G
1612 default 0xC0000000
1613
1da177e4
LT
1614config NR_CPUS
1615 int "Maximum number of CPUs (2-32)"
1616 range 2 32
1617 depends on SMP
1618 default "4"
1619
a054a811 1620config HOTPLUG_CPU
00b7dede
RK
1621 bool "Support for hot-pluggable CPUs"
1622 depends on SMP && HOTPLUG
a054a811
RK
1623 help
1624 Say Y here to experiment with turning CPUs off and on. CPUs
1625 can be controlled through /sys/devices/system/cpu.
1626
37ee16ae
RK
1627config LOCAL_TIMERS
1628 bool "Use local timer interrupts"
971acb9b 1629 depends on SMP
37ee16ae 1630 default y
30d8bead 1631 select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
37ee16ae
RK
1632 help
1633 Enable support for local timers on SMP platforms, rather then the
1634 legacy IPI broadcast method. Local timers allows the system
1635 accounting to be spread across the timer interval, preventing a
1636 "thundering herd" at every timer tick.
1637
44986ab0
PDSN
1638config ARCH_NR_GPIO
1639 int
3dea19e8 1640 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
70227a45 1641 default 355 if ARCH_U8500
9a01ec30 1642 default 264 if MACH_H4700
39f47d9f 1643 default 512 if SOC_OMAP5
e9a91de7 1644 default 288 if ARCH_VT8500
44986ab0
PDSN
1645 default 0
1646 help
1647 Maximum number of GPIOs in the system.
1648
1649 If unsure, leave the default value.
1650
d45a398f 1651source kernel/Kconfig.preempt
1da177e4 1652
f8065813
RK
1653config HZ
1654 int
b130d5c2 1655 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
a73ddc61 1656 ARCH_S5PV210 || ARCH_EXYNOS4
bfe65704 1657 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1658 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1659 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1660 default 100
1661
16c79651 1662config THUMB2_KERNEL
00b7dede
RK
1663 bool "Compile the kernel in Thumb-2 mode"
1664 depends on CPU_V7 && !CPU_V6 && !CPU_V6K
16c79651
CM
1665 select AEABI
1666 select ARM_ASM_UNIFIED
89bace65 1667 select ARM_UNWIND
16c79651
CM
1668 help
1669 By enabling this option, the kernel will be compiled in
1670 Thumb-2 mode. A compiler/assembler that understand the unified
1671 ARM-Thumb syntax is needed.
1672
1673 If unsure, say N.
1674
6f685c5c
DM
1675config THUMB2_AVOID_R_ARM_THM_JUMP11
1676 bool "Work around buggy Thumb-2 short branch relocations in gas"
1677 depends on THUMB2_KERNEL && MODULES
1678 default y
1679 help
1680 Various binutils versions can resolve Thumb-2 branches to
1681 locally-defined, preemptible global symbols as short-range "b.n"
1682 branch instructions.
1683
1684 This is a problem, because there's no guarantee the final
1685 destination of the symbol, or any candidate locations for a
1686 trampoline, are within range of the branch. For this reason, the
1687 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1688 relocation in modules at all, and it makes little sense to add
1689 support.
1690
1691 The symptom is that the kernel fails with an "unsupported
1692 relocation" error when loading some modules.
1693
1694 Until fixed tools are available, passing
1695 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1696 code which hits this problem, at the cost of a bit of extra runtime
1697 stack usage in some cases.
1698
1699 The problem is described in more detail at:
1700 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1701
1702 Only Thumb-2 kernels are affected.
1703
1704 Unless you are sure your tools don't have this problem, say Y.
1705
0becb088
CM
1706config ARM_ASM_UNIFIED
1707 bool
1708
704bdda0
NP
1709config AEABI
1710 bool "Use the ARM EABI to compile the kernel"
1711 help
1712 This option allows for the kernel to be compiled using the latest
1713 ARM ABI (aka EABI). This is only useful if you are using a user
1714 space environment that is also compiled with EABI.
1715
1716 Since there are major incompatibilities between the legacy ABI and
1717 EABI, especially with regard to structure member alignment, this
1718 option also changes the kernel syscall calling convention to
1719 disambiguate both ABIs and allow for backward compatibility support
1720 (selected with CONFIG_OABI_COMPAT).
1721
1722 To use this you need GCC version 4.0.0 or later.
1723
6c90c872 1724config OABI_COMPAT
a73a3ff1 1725 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
9bc433a1 1726 depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
6c90c872
NP
1727 default y
1728 help
1729 This option preserves the old syscall interface along with the
1730 new (ARM EABI) one. It also provides a compatibility layer to
1731 intercept syscalls that have structure arguments which layout
1732 in memory differs between the legacy ABI and the new ARM EABI
1733 (only for non "thumb" binaries). This option adds a tiny
1734 overhead to all syscalls and produces a slightly larger kernel.
1735 If you know you'll be using only pure EABI user space then you
1736 can say N here. If this option is not selected and you attempt
1737 to execute a legacy ABI binary then the result will be
1738 UNPREDICTABLE (in fact it can be predicted that it won't work
1739 at all). If in doubt say Y.
1740
eb33575c 1741config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1742 bool
e80d6a24 1743
05944d74
RK
1744config ARCH_SPARSEMEM_ENABLE
1745 bool
1746
07a2f737
RK
1747config ARCH_SPARSEMEM_DEFAULT
1748 def_bool ARCH_SPARSEMEM_ENABLE
1749
05944d74 1750config ARCH_SELECT_MEMORY_MODEL
be370302 1751 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1752
7b7bf499
WD
1753config HAVE_ARCH_PFN_VALID
1754 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1755
053a96ca 1756config HIGHMEM
e8db89a2
RK
1757 bool "High Memory Support"
1758 depends on MMU
053a96ca
NP
1759 help
1760 The address space of ARM processors is only 4 Gigabytes large
1761 and it has to accommodate user address space, kernel address
1762 space as well as some memory mapped IO. That means that, if you
1763 have a large amount of physical memory and/or IO, not all of the
1764 memory can be "permanently mapped" by the kernel. The physical
1765 memory that is not permanently mapped is called "high memory".
1766
1767 Depending on the selected kernel/user memory split, minimum
1768 vmalloc space and actual amount of RAM, you may not need this
1769 option which should result in a slightly faster kernel.
1770
1771 If unsure, say n.
1772
65cec8e3
RK
1773config HIGHPTE
1774 bool "Allocate 2nd-level pagetables from highmem"
1775 depends on HIGHMEM
65cec8e3 1776
1b8873a0
JI
1777config HW_PERF_EVENTS
1778 bool "Enable hardware performance counter support for perf events"
f0d1bc47 1779 depends on PERF_EVENTS
1b8873a0
JI
1780 default y
1781 help
1782 Enable hardware performance counter support for perf events. If
1783 disabled, perf events will use software events only.
1784
3f22ab27
DH
1785source "mm/Kconfig"
1786
c1b2d970
MD
1787config FORCE_MAX_ZONEORDER
1788 int "Maximum zone order" if ARCH_SHMOBILE
1789 range 11 64 if ARCH_SHMOBILE
898f08e1 1790 default "12" if SOC_AM33XX
c1b2d970
MD
1791 default "9" if SA1111
1792 default "11"
1793 help
1794 The kernel memory allocator divides physically contiguous memory
1795 blocks into "zones", where each zone is a power of two number of
1796 pages. This option selects the largest power of two that the kernel
1797 keeps in the memory allocator. If you need to allocate very large
1798 blocks of physically contiguous memory, then you may need to
1799 increase this value.
1800
1801 This config option is actually maximum order plus one. For example,
1802 a value of 11 means that the largest free memory block is 2^10 pages.
1803
1da177e4
LT
1804config ALIGNMENT_TRAP
1805 bool
f12d0d7c 1806 depends on CPU_CP15_MMU
1da177e4 1807 default y if !ARCH_EBSA110
e119bfff 1808 select HAVE_PROC_CPU if PROC_FS
1da177e4 1809 help
84eb8d06 1810 ARM processors cannot fetch/store information which is not
1da177e4
LT
1811 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1812 address divisible by 4. On 32-bit ARM processors, these non-aligned
1813 fetch/store instructions will be emulated in software if you say
1814 here, which has a severe performance impact. This is necessary for
1815 correct operation of some network protocols. With an IP-only
1816 configuration it is safe to say N, otherwise say Y.
1817
39ec58f3 1818config UACCESS_WITH_MEMCPY
38ef2ad5
LW
1819 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
1820 depends on MMU
39ec58f3
LB
1821 default y if CPU_FEROCEON
1822 help
1823 Implement faster copy_to_user and clear_user methods for CPU
1824 cores where a 8-word STM instruction give significantly higher
1825 memory write throughput than a sequence of individual 32bit stores.
1826
1827 A possible side effect is a slight increase in scheduling latency
1828 between threads sharing the same address space if they invoke
1829 such copy operations with large buffers.
1830
1831 However, if the CPU data cache is using a write-allocate mode,
1832 this option is unlikely to provide any performance gain.
1833
70c70d97
NP
1834config SECCOMP
1835 bool
1836 prompt "Enable seccomp to safely compute untrusted bytecode"
1837 ---help---
1838 This kernel feature is useful for number crunching applications
1839 that may need to compute untrusted bytecode during their
1840 execution. By using pipes or other transports made available to
1841 the process as file descriptors supporting the read/write
1842 syscalls, it's possible to isolate those applications in
1843 their own address space using seccomp. Once seccomp is
1844 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1845 and the task is only allowed to execute a few safe syscalls
1846 defined by each seccomp mode.
1847
c743f380
NP
1848config CC_STACKPROTECTOR
1849 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
4a50bfe3 1850 depends on EXPERIMENTAL
c743f380
NP
1851 help
1852 This option turns on the -fstack-protector GCC feature. This
1853 feature puts, at the beginning of functions, a canary value on
1854 the stack just before the return address, and validates
1855 the value just before actually returning. Stack based buffer
1856 overflows (that need to overwrite this return address) now also
1857 overwrite the canary, which gets detected and the attack is then
1858 neutralized via a kernel panic.
1859 This feature requires gcc version 4.2 or above.
1860
eff8d644
SS
1861config XEN_DOM0
1862 def_bool y
1863 depends on XEN
1864
1865config XEN
1866 bool "Xen guest support on ARM (EXPERIMENTAL)"
1867 depends on EXPERIMENTAL && ARM && OF
f880b67d 1868 depends on CPU_V7 && !CPU_V6
eff8d644
SS
1869 help
1870 Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1871
1da177e4
LT
1872endmenu
1873
1874menu "Boot options"
1875
9eb8f674
GL
1876config USE_OF
1877 bool "Flattened Device Tree support"
b1b3f49c 1878 select IRQ_DOMAIN
9eb8f674
GL
1879 select OF
1880 select OF_EARLY_FLATTREE
1881 help
1882 Include support for flattened device tree machine descriptions.
1883
bd51e2f5
NP
1884config ATAGS
1885 bool "Support for the traditional ATAGS boot data passing" if USE_OF
1886 default y
1887 help
1888 This is the traditional way of passing data to the kernel at boot
1889 time. If you are solely relying on the flattened device tree (or
1890 the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1891 to remove ATAGS support from your kernel binary. If unsure,
1892 leave this to y.
1893
1894config DEPRECATED_PARAM_STRUCT
1895 bool "Provide old way to pass kernel parameters"
1896 depends on ATAGS
1897 help
1898 This was deprecated in 2001 and announced to live on for 5 years.
1899 Some old boot loaders still use this way.
1900
1da177e4
LT
1901# Compressed boot loader in ROM. Yes, we really want to ask about
1902# TEXT and BSS so we preserve their values in the config files.
1903config ZBOOT_ROM_TEXT
1904 hex "Compressed ROM boot loader base address"
1905 default "0"
1906 help
1907 The physical address at which the ROM-able zImage is to be
1908 placed in the target. Platforms which normally make use of
1909 ROM-able zImage formats normally set this to a suitable
1910 value in their defconfig file.
1911
1912 If ZBOOT_ROM is not enabled, this has no effect.
1913
1914config ZBOOT_ROM_BSS
1915 hex "Compressed ROM boot loader BSS address"
1916 default "0"
1917 help
f8c440b2
DF
1918 The base address of an area of read/write memory in the target
1919 for the ROM-able zImage which must be available while the
1920 decompressor is running. It must be large enough to hold the
1921 entire decompressed kernel plus an additional 128 KiB.
1922 Platforms which normally make use of ROM-able zImage formats
1923 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1924
1925 If ZBOOT_ROM is not enabled, this has no effect.
1926
1927config ZBOOT_ROM
1928 bool "Compressed boot loader in ROM/flash"
1929 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1930 help
1931 Say Y here if you intend to execute your compressed kernel image
1932 (zImage) directly from ROM or flash. If unsure, say N.
1933
090ab3ff
SH
1934choice
1935 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
1936 depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1937 default ZBOOT_ROM_NONE
1938 help
1939 Include experimental SD/MMC loading code in the ROM-able zImage.
59bf8964 1940 With this enabled it is possible to write the ROM-able zImage
090ab3ff
SH
1941 kernel image to an MMC or SD card and boot the kernel straight
1942 from the reset vector. At reset the processor Mask ROM will load
59bf8964 1943 the first part of the ROM-able zImage which in turn loads the
090ab3ff
SH
1944 rest the kernel image to RAM.
1945
1946config ZBOOT_ROM_NONE
1947 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1948 help
1949 Do not load image from SD or MMC
1950
f45b1149
SH
1951config ZBOOT_ROM_MMCIF
1952 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1953 help
090ab3ff
SH
1954 Load image from MMCIF hardware block.
1955
1956config ZBOOT_ROM_SH_MOBILE_SDHI
1957 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1958 help
1959 Load image from SDHI hardware block
1960
1961endchoice
f45b1149 1962
e2a6a3aa
JB
1963config ARM_APPENDED_DTB
1964 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
1965 depends on OF && !ZBOOT_ROM && EXPERIMENTAL
1966 help
1967 With this option, the boot code will look for a device tree binary
1968 (DTB) appended to zImage
1969 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1970
1971 This is meant as a backward compatibility convenience for those
1972 systems with a bootloader that can't be upgraded to accommodate
1973 the documented boot protocol using a device tree.
1974
1975 Beware that there is very little in terms of protection against
1976 this option being confused by leftover garbage in memory that might
1977 look like a DTB header after a reboot if no actual DTB is appended
1978 to zImage. Do not leave this option active in a production kernel
1979 if you don't intend to always append a DTB. Proper passing of the
1980 location into r2 of a bootloader provided DTB is always preferable
1981 to this option.
1982
b90b9a38
NP
1983config ARM_ATAG_DTB_COMPAT
1984 bool "Supplement the appended DTB with traditional ATAG information"
1985 depends on ARM_APPENDED_DTB
1986 help
1987 Some old bootloaders can't be updated to a DTB capable one, yet
1988 they provide ATAGs with memory configuration, the ramdisk address,
1989 the kernel cmdline string, etc. Such information is dynamically
1990 provided by the bootloader and can't always be stored in a static
1991 DTB. To allow a device tree enabled kernel to be used with such
1992 bootloaders, this option allows zImage to extract the information
1993 from the ATAG list and store it at run time into the appended DTB.
1994
d0f34a11
GR
1995choice
1996 prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1997 default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1998
1999config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
2000 bool "Use bootloader kernel arguments if available"
2001 help
2002 Uses the command-line options passed by the boot loader instead of
2003 the device tree bootargs property. If the boot loader doesn't provide
2004 any, the device tree bootargs property will be used.
2005
2006config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
2007 bool "Extend with bootloader kernel arguments"
2008 help
2009 The command-line arguments provided by the boot loader will be
2010 appended to the the device tree bootargs property.
2011
2012endchoice
2013
1da177e4
LT
2014config CMDLINE
2015 string "Default kernel command string"
2016 default ""
2017 help
2018 On some architectures (EBSA110 and CATS), there is currently no way
2019 for the boot loader to pass arguments to the kernel. For these
2020 architectures, you should supply some command-line options at build
2021 time by entering them here. As a minimum, you should specify the
2022 memory size and the root device (e.g., mem=64M root=/dev/nfs).
2023
4394c124
VB
2024choice
2025 prompt "Kernel command line type" if CMDLINE != ""
2026 default CMDLINE_FROM_BOOTLOADER
bd51e2f5 2027 depends on ATAGS
4394c124
VB
2028
2029config CMDLINE_FROM_BOOTLOADER
2030 bool "Use bootloader kernel arguments if available"
2031 help
2032 Uses the command-line options passed by the boot loader. If
2033 the boot loader doesn't provide any, the default kernel command
2034 string provided in CMDLINE will be used.
2035
2036config CMDLINE_EXTEND
2037 bool "Extend bootloader kernel arguments"
2038 help
2039 The command-line arguments provided by the boot loader will be
2040 appended to the default kernel command string.
2041
92d2040d
AH
2042config CMDLINE_FORCE
2043 bool "Always use the default kernel command string"
92d2040d
AH
2044 help
2045 Always use the default kernel command string, even if the boot
2046 loader passes other arguments to the kernel.
2047 This is useful if you cannot or don't want to change the
2048 command-line options your boot loader passes to the kernel.
4394c124 2049endchoice
92d2040d 2050
1da177e4
LT
2051config XIP_KERNEL
2052 bool "Kernel Execute-In-Place from ROM"
387798b3 2053 depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
1da177e4
LT
2054 help
2055 Execute-In-Place allows the kernel to run from non-volatile storage
2056 directly addressable by the CPU, such as NOR flash. This saves RAM
2057 space since the text section of the kernel is not loaded from flash
2058 to RAM. Read-write sections, such as the data section and stack,
2059 are still copied to RAM. The XIP kernel is not compressed since
2060 it has to run directly from flash, so it will take more space to
2061 store it. The flash address used to link the kernel object files,
2062 and for storing it, is configuration dependent. Therefore, if you
2063 say Y here, you must know the proper physical address where to
2064 store the kernel image depending on your own flash memory usage.
2065
2066 Also note that the make target becomes "make xipImage" rather than
2067 "make zImage" or "make Image". The final kernel binary to put in
2068 ROM memory will be arch/arm/boot/xipImage.
2069
2070 If unsure, say N.
2071
2072config XIP_PHYS_ADDR
2073 hex "XIP Kernel Physical Location"
2074 depends on XIP_KERNEL
2075 default "0x00080000"
2076 help
2077 This is the physical address in your flash memory the kernel will
2078 be linked for and stored to. This address is dependent on your
2079 own flash usage.
2080
c587e4a6
RP
2081config KEXEC
2082 bool "Kexec system call (EXPERIMENTAL)"
02b73e2e 2083 depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
c587e4a6
RP
2084 help
2085 kexec is a system call that implements the ability to shutdown your
2086 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 2087 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
2088 you can start any kernel with it, not just Linux.
2089
2090 It is an ongoing process to be certain the hardware in a machine
2091 is properly shutdown, so do not be surprised if this code does not
2092 initially work for you. It may help to enable device hotplugging
2093 support.
2094
4cd9d6f7
RP
2095config ATAGS_PROC
2096 bool "Export atags in procfs"
bd51e2f5 2097 depends on ATAGS && KEXEC
b98d7291 2098 default y
4cd9d6f7
RP
2099 help
2100 Should the atags used to boot the kernel be exported in an "atags"
2101 file in procfs. Useful with kexec.
2102
cb5d39b3
MW
2103config CRASH_DUMP
2104 bool "Build kdump crash kernel (EXPERIMENTAL)"
2105 depends on EXPERIMENTAL
2106 help
2107 Generate crash dump after being started by kexec. This should
2108 be normally only set in special crash dump kernels which are
2109 loaded in the main kernel with kexec-tools into a specially
2110 reserved region and then later executed after a crash by
2111 kdump/kexec. The crash dump kernel must be compiled to a
2112 memory address not used by the main kernel
2113
2114 For more details see Documentation/kdump/kdump.txt
2115
e69edc79
EM
2116config AUTO_ZRELADDR
2117 bool "Auto calculation of the decompressed kernel image address"
2118 depends on !ZBOOT_ROM && !ARCH_U300
2119 help
2120 ZRELADDR is the physical address where the decompressed kernel
2121 image will be placed. If AUTO_ZRELADDR is selected, the address
2122 will be determined at run-time by masking the current IP with
2123 0xf8000000. This assumes the zImage being placed in the first 128MB
2124 from start of memory.
2125
1da177e4
LT
2126endmenu
2127
ac9d7efc 2128menu "CPU Power Management"
1da177e4 2129
89c52ed4 2130if ARCH_HAS_CPUFREQ
1da177e4
LT
2131
2132source "drivers/cpufreq/Kconfig"
2133
64f102b6
YS
2134config CPU_FREQ_IMX
2135 tristate "CPUfreq driver for i.MX CPUs"
2136 depends on ARCH_MXC && CPU_FREQ
f637c4c9 2137 select CPU_FREQ_TABLE
64f102b6
YS
2138 help
2139 This enables the CPUfreq driver for i.MX CPUs.
2140
1da177e4
LT
2141config CPU_FREQ_SA1100
2142 bool
1da177e4
LT
2143
2144config CPU_FREQ_SA1110
2145 bool
1da177e4
LT
2146
2147config CPU_FREQ_INTEGRATOR
2148 tristate "CPUfreq driver for ARM Integrator CPUs"
2149 depends on ARCH_INTEGRATOR && CPU_FREQ
2150 default y
2151 help
2152 This enables the CPUfreq driver for ARM Integrator CPUs.
2153
2154 For details, take a look at <file:Documentation/cpu-freq>.
2155
2156 If in doubt, say Y.
2157
9e2697ff
RK
2158config CPU_FREQ_PXA
2159 bool
2160 depends on CPU_FREQ && ARCH_PXA && PXA25x
2161 default y
2162 select CPU_FREQ_DEFAULT_GOV_USERSPACE
b1b3f49c 2163 select CPU_FREQ_TABLE
9e2697ff 2164
9d56c02a
BD
2165config CPU_FREQ_S3C
2166 bool
2167 help
2168 Internal configuration node for common cpufreq on Samsung SoC
2169
2170config CPU_FREQ_S3C24XX
4a50bfe3 2171 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
b130d5c2 2172 depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
9d56c02a
BD
2173 select CPU_FREQ_S3C
2174 help
2175 This enables the CPUfreq driver for the Samsung S3C24XX family
2176 of CPUs.
2177
2178 For details, take a look at <file:Documentation/cpu-freq>.
2179
2180 If in doubt, say N.
2181
2182config CPU_FREQ_S3C24XX_PLL
4a50bfe3 2183 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
9d56c02a
BD
2184 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
2185 help
2186 Compile in support for changing the PLL frequency from the
2187 S3C24XX series CPUfreq driver. The PLL takes time to settle
2188 after a frequency change, so by default it is not enabled.
2189
2190 This also means that the PLL tables for the selected CPU(s) will
2191 be built which may increase the size of the kernel image.
2192
2193config CPU_FREQ_S3C24XX_DEBUG
2194 bool "Debug CPUfreq Samsung driver core"
2195 depends on CPU_FREQ_S3C24XX
2196 help
2197 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
2198
2199config CPU_FREQ_S3C24XX_IODEBUG
2200 bool "Debug CPUfreq Samsung driver IO timing"
2201 depends on CPU_FREQ_S3C24XX
2202 help
2203 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
2204
e6d197a6
BD
2205config CPU_FREQ_S3C24XX_DEBUGFS
2206 bool "Export debugfs for CPUFreq"
2207 depends on CPU_FREQ_S3C24XX && DEBUG_FS
2208 help
2209 Export status information via debugfs.
2210
1da177e4
LT
2211endif
2212
ac9d7efc
RK
2213source "drivers/cpuidle/Kconfig"
2214
2215endmenu
2216
1da177e4
LT
2217menu "Floating point emulation"
2218
2219comment "At least one emulation must be selected"
2220
2221config FPE_NWFPE
2222 bool "NWFPE math emulation"
593c252a 2223 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2224 ---help---
2225 Say Y to include the NWFPE floating point emulator in the kernel.
2226 This is necessary to run most binaries. Linux does not currently
2227 support floating point hardware so you need to say Y here even if
2228 your machine has an FPA or floating point co-processor podule.
2229
2230 You may say N here if you are going to load the Acorn FPEmulator
2231 early in the bootup.
2232
2233config FPE_NWFPE_XP
2234 bool "Support extended precision"
bedf142b 2235 depends on FPE_NWFPE
1da177e4
LT
2236 help
2237 Say Y to include 80-bit support in the kernel floating-point
2238 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2239 Note that gcc does not generate 80-bit operations by default,
2240 so in most cases this option only enlarges the size of the
2241 floating point emulator without any good reason.
2242
2243 You almost surely want to say N here.
2244
2245config FPE_FASTFPE
2246 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 2247 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
2248 ---help---
2249 Say Y here to include the FAST floating point emulator in the kernel.
2250 This is an experimental much faster emulator which now also has full
2251 precision for the mantissa. It does not support any exceptions.
2252 It is very simple, and approximately 3-6 times faster than NWFPE.
2253
2254 It should be sufficient for most programs. It may be not suitable
2255 for scientific calculations, but you have to check this for yourself.
2256 If you do not feel you need a faster FP emulation you should better
2257 choose NWFPE.
2258
2259config VFP
2260 bool "VFP-format floating point maths"
e399b1a4 2261 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2262 help
2263 Say Y to include VFP support code in the kernel. This is needed
2264 if your hardware includes a VFP unit.
2265
2266 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2267 release notes and additional status information.
2268
2269 Say N if your target does not have VFP hardware.
2270
25ebee02
CM
2271config VFPv3
2272 bool
2273 depends on VFP
2274 default y if CPU_V7
2275
b5872db4
CM
2276config NEON
2277 bool "Advanced SIMD (NEON) Extension support"
2278 depends on VFPv3 && CPU_V7
2279 help
2280 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2281 Extension.
2282
1da177e4
LT
2283endmenu
2284
2285menu "Userspace binary formats"
2286
2287source "fs/Kconfig.binfmt"
2288
2289config ARTHUR
2290 tristate "RISC OS personality"
704bdda0 2291 depends on !AEABI
1da177e4
LT
2292 help
2293 Say Y here to include the kernel code necessary if you want to run
2294 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2295 experimental; if this sounds frightening, say N and sleep in peace.
2296 You can also say M here to compile this support as a module (which
2297 will be called arthur).
2298
2299endmenu
2300
2301menu "Power management options"
2302
eceab4ac 2303source "kernel/power/Kconfig"
1da177e4 2304
f4cb5700 2305config ARCH_SUSPEND_POSSIBLE
4b1082ca 2306 depends on !ARCH_S5PC100
6a786182 2307 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
3f5d0819 2308 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
f4cb5700
JB
2309 def_bool y
2310
15e0d9e3
AB
2311config ARM_CPU_SUSPEND
2312 def_bool PM_SLEEP
2313
1da177e4
LT
2314endmenu
2315
d5950b43
SR
2316source "net/Kconfig"
2317
ac25150f 2318source "drivers/Kconfig"
1da177e4
LT
2319
2320source "fs/Kconfig"
2321
1da177e4
LT
2322source "arch/arm/Kconfig.debug"
2323
2324source "security/Kconfig"
2325
2326source "crypto/Kconfig"
2327
2328source "lib/Kconfig"
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