Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / Kconfig
CommitLineData
1da177e4
LT
1config ARM
2 bool
3 default y
e17c6d56 4 select HAVE_AOUT
24056f52 5 select HAVE_DMA_API_DEBUG
d0ee9f40 6 select HAVE_IDE if PCI || ISA || PCMCIA
2778f620 7 select HAVE_MEMBLOCK
12b824fb 8 select RTC_LIB
75e7153a 9 select SYS_SUPPORTS_APM_EMULATION
a41297a0 10 select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
fe166148 11 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
09f05d85 12 select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
5cbad0eb 13 select HAVE_ARCH_KGDB
856bc356 14 select HAVE_KPROBES if !XIP_KERNEL
9edddaa2 15 select HAVE_KRETPROBES if (HAVE_KPROBES)
606576ce 16 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
80be7a7f
RV
17 select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
18 select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
0e341af8 19 select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
e39f5602 20 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
1fe53268 21 select HAVE_GENERIC_DMA_COHERENT
e7db7b42
AT
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_LZO
6e8699f7 24 select HAVE_KERNEL_LZMA
a7f464f3 25 select HAVE_KERNEL_XZ
e360adbe 26 select HAVE_IRQ_WORK
7ada189f
JI
27 select HAVE_PERF_EVENTS
28 select PERF_USE_VMALLOC
e513f8bf 29 select HAVE_REGS_AND_STACK_ACCESS_API
e399b1a4 30 select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
ed60453f 31 select HAVE_C_RECORDMCOUNT
e2a93ecc 32 select HAVE_GENERIC_HARDIRQS
25a5662a 33 select GENERIC_IRQ_SHOW
1fb90263 34 select CPU_PM if (SUSPEND || CPU_IDLE)
e5bfb72c 35 select GENERIC_PCI_IOMAP
fada8dcf 36 select HAVE_BPF_JIT if NET
1da177e4
LT
37 help
38 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 39 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 40 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 41 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
42 Europe. There is an ARM Linux project with a web page at
43 <http://www.arm.linux.org.uk/>.
44
74facffe
RK
45config ARM_HAS_SG_CHAIN
46 bool
47
1a189b97
RK
48config HAVE_PWM
49 bool
50
0b05da72
HUK
51config MIGHT_HAVE_PCI
52 bool
53
75e7153a
RB
54config SYS_SUPPORTS_APM_EMULATION
55 bool
56
0a938b97
DB
57config GENERIC_GPIO
58 bool
0a938b97 59
5cfc8ee0
JS
60config ARCH_USES_GETTIMEOFFSET
61 bool
62 default n
746140c7 63
0567a0c0
KH
64config GENERIC_CLOCKEVENTS
65 bool
0567a0c0 66
a8655e83
CM
67config GENERIC_CLOCKEVENTS_BROADCAST
68 bool
69 depends on GENERIC_CLOCKEVENTS
5388a6b2 70 default y if SMP
a8655e83 71
bf9dd360
RH
72config KTIME_SCALAR
73 bool
74 default y
75
bc581770
LW
76config HAVE_TCM
77 bool
78 select GENERIC_ALLOCATOR
79
e119bfff
RK
80config HAVE_PROC_CPU
81 bool
82
5ea81769
AV
83config NO_IOPORT
84 bool
5ea81769 85
1da177e4
LT
86config EISA
87 bool
88 ---help---
89 The Extended Industry Standard Architecture (EISA) bus was
90 developed as an open alternative to the IBM MicroChannel bus.
91
92 The EISA bus provided some of the features of the IBM MicroChannel
93 bus while maintaining backward compatibility with cards made for
94 the older ISA bus. The EISA bus saw limited use between 1988 and
95 1995 when it was made obsolete by the PCI bus.
96
97 Say Y here if you are building a kernel for an EISA-based machine.
98
99 Otherwise, say N.
100
101config SBUS
102 bool
103
104config MCA
105 bool
106 help
107 MicroChannel Architecture is found in some IBM PS/2 machines and
108 laptops. It is a bus system similar to PCI or ISA. See
109 <file:Documentation/mca.txt> (and especially the web page given
110 there) before attempting to build an MCA bus kernel.
111
f16fb1ec
RK
112config STACKTRACE_SUPPORT
113 bool
114 default y
115
f76e9154
NP
116config HAVE_LATENCYTOP_SUPPORT
117 bool
118 depends on !SMP
119 default y
120
f16fb1ec
RK
121config LOCKDEP_SUPPORT
122 bool
123 default y
124
7ad1bcb2
RK
125config TRACE_IRQFLAGS_SUPPORT
126 bool
127 default y
128
4a2581a0
TG
129config HARDIRQS_SW_RESEND
130 bool
131 default y
132
133config GENERIC_IRQ_PROBE
134 bool
135 default y
136
95c354fe
NP
137config GENERIC_LOCKBREAK
138 bool
139 default y
140 depends on SMP && PREEMPT
141
1da177e4
LT
142config RWSEM_GENERIC_SPINLOCK
143 bool
144 default y
145
146config RWSEM_XCHGADD_ALGORITHM
147 bool
148
f0d1b0b3
DH
149config ARCH_HAS_ILOG2_U32
150 bool
f0d1b0b3
DH
151
152config ARCH_HAS_ILOG2_U64
153 bool
f0d1b0b3 154
89c52ed4
BD
155config ARCH_HAS_CPUFREQ
156 bool
157 help
158 Internal node to signify that the ARCH has CPUFREQ support
159 and that the relevant menu configurations are displayed for
160 it.
161
c7b0aff4
KH
162config ARCH_HAS_CPU_IDLE_WAIT
163 def_bool y
164
b89c3b16
AM
165config GENERIC_HWEIGHT
166 bool
167 default y
168
1da177e4
LT
169config GENERIC_CALIBRATE_DELAY
170 bool
171 default y
172
a08b6b79
AV
173config ARCH_MAY_HAVE_PC_FDC
174 bool
175
5ac6da66
CL
176config ZONE_DMA
177 bool
5ac6da66 178
ccd7ab7f
FT
179config NEED_DMA_MAP_STATE
180 def_bool y
181
58af4a24
RH
182config ARCH_HAS_DMA_SET_COHERENT_MASK
183 bool
184
1da177e4
LT
185config GENERIC_ISA_DMA
186 bool
187
1da177e4
LT
188config FIQ
189 bool
190
13a5045d
RH
191config NEED_RET_TO_USER
192 bool
193
034d2f5a
AV
194config ARCH_MTD_XIP
195 bool
196
c760fc19
HC
197config VECTORS_BASE
198 hex
6afd6fae 199 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
200 default DRAM_BASE if REMAP_VECTORS_TO_RAM
201 default 0x00000000
202 help
203 The base address of exception vectors.
204
dc21af99 205config ARM_PATCH_PHYS_VIRT
c1becedc
RK
206 bool "Patch physical to virtual translations at runtime" if EMBEDDED
207 default y
b511d75d 208 depends on !XIP_KERNEL && MMU
dc21af99
RK
209 depends on !ARCH_REALVIEW || !SPARSEMEM
210 help
111e9a5c
RK
211 Patch phys-to-virt and virt-to-phys translation functions at
212 boot and module load time according to the position of the
213 kernel in system memory.
dc21af99 214
111e9a5c 215 This can only be used with non-XIP MMU kernels where the base
daece596 216 of physical memory is at a 16MB boundary.
dc21af99 217
c1becedc
RK
218 Only disable this option if you know that you do not require
219 this feature (eg, building a kernel for a single machine) and
220 you need to shrink the kernel to the minimal size.
dc21af99 221
c334bc15
RH
222config NEED_MACH_IO_H
223 bool
224 help
225 Select this when mach/io.h is required to provide special
226 definitions for this platform. The need for mach/io.h should
227 be avoided when possible.
228
0cdc8b92 229config NEED_MACH_MEMORY_H
1b9f95f8
NP
230 bool
231 help
0cdc8b92
NP
232 Select this when mach/memory.h is required to provide special
233 definitions for this platform. The need for mach/memory.h should
234 be avoided when possible.
dc21af99 235
1b9f95f8 236config PHYS_OFFSET
974c0724 237 hex "Physical address of main memory" if MMU
0cdc8b92 238 depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
974c0724 239 default DRAM_BASE if !MMU
111e9a5c 240 help
1b9f95f8
NP
241 Please provide the physical address corresponding to the
242 location of main memory in your system.
cada3c08 243
87e040b6
SG
244config GENERIC_BUG
245 def_bool y
246 depends on BUG
247
1da177e4
LT
248source "init/Kconfig"
249
dc52ddc0
MH
250source "kernel/Kconfig.freezer"
251
1da177e4
LT
252menu "System Type"
253
3c427975
HC
254config MMU
255 bool "MMU-based Paged Memory Management Support"
256 default y
257 help
258 Select if you want MMU-based virtualised addressing space
259 support by paged memory management. If unsure, say 'Y'.
260
ccf50e23
RK
261#
262# The "ARM system type" choice list is ordered alphabetically by option
263# text. Please add new entries in the option alphabetic order.
264#
1da177e4
LT
265choice
266 prompt "ARM system type"
6a0e2430 267 default ARCH_VERSATILE
1da177e4 268
4af6fee1
DS
269config ARCH_INTEGRATOR
270 bool "ARM Ltd. Integrator family"
271 select ARM_AMBA
89c52ed4 272 select ARCH_HAS_CPUFREQ
6d803ba7 273 select CLKDEV_LOOKUP
aa3831cf 274 select HAVE_MACH_CLKDEV
9904f793 275 select HAVE_TCM
c5a0adb5 276 select ICST
13edd86d 277 select GENERIC_CLOCKEVENTS
f4b8b319 278 select PLAT_VERSATILE
c41b16f8 279 select PLAT_VERSATILE_FPGA_IRQ
c334bc15 280 select NEED_MACH_IO_H
0cdc8b92 281 select NEED_MACH_MEMORY_H
695436e3 282 select SPARSE_IRQ
4af6fee1
DS
283 help
284 Support for ARM's Integrator platform.
285
286config ARCH_REALVIEW
287 bool "ARM Ltd. RealView family"
288 select ARM_AMBA
6d803ba7 289 select CLKDEV_LOOKUP
aa3831cf 290 select HAVE_MACH_CLKDEV
c5a0adb5 291 select ICST
ae30ceac 292 select GENERIC_CLOCKEVENTS
eb7fffa3 293 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 294 select PLAT_VERSATILE
3cb5ee49 295 select PLAT_VERSATILE_CLCD
e3887714 296 select ARM_TIMER_SP804
b56ba8aa 297 select GPIO_PL061 if GPIOLIB
0cdc8b92 298 select NEED_MACH_MEMORY_H
4af6fee1
DS
299 help
300 This enables support for ARM Ltd RealView boards.
301
302config ARCH_VERSATILE
303 bool "ARM Ltd. Versatile family"
304 select ARM_AMBA
305 select ARM_VIC
6d803ba7 306 select CLKDEV_LOOKUP
aa3831cf 307 select HAVE_MACH_CLKDEV
c5a0adb5 308 select ICST
89df1272 309 select GENERIC_CLOCKEVENTS
bbeddc43 310 select ARCH_WANT_OPTIONAL_GPIOLIB
f4b8b319 311 select PLAT_VERSATILE
3414ba8c 312 select PLAT_VERSATILE_CLCD
c41b16f8 313 select PLAT_VERSATILE_FPGA_IRQ
e3887714 314 select ARM_TIMER_SP804
4af6fee1
DS
315 help
316 This enables support for ARM Ltd Versatile board.
317
ceade897
RK
318config ARCH_VEXPRESS
319 bool "ARM Ltd. Versatile Express family"
320 select ARCH_WANT_OPTIONAL_GPIOLIB
321 select ARM_AMBA
322 select ARM_TIMER_SP804
6d803ba7 323 select CLKDEV_LOOKUP
aa3831cf 324 select HAVE_MACH_CLKDEV
ceade897 325 select GENERIC_CLOCKEVENTS
ceade897 326 select HAVE_CLK
95c34f83 327 select HAVE_PATA_PLATFORM
ceade897 328 select ICST
ba81f502 329 select NO_IOPORT
ceade897 330 select PLAT_VERSATILE
0fb44b91 331 select PLAT_VERSATILE_CLCD
ceade897
RK
332 help
333 This enables support for the ARM Ltd Versatile Express boards.
334
8fc5ffa0
AV
335config ARCH_AT91
336 bool "Atmel AT91"
f373e8c0 337 select ARCH_REQUIRE_GPIOLIB
93686ae8 338 select HAVE_CLK
bd602995 339 select CLKDEV_LOOKUP
e261501d 340 select IRQ_DOMAIN
4af6fee1 341 help
2b3b3516 342 This enables support for systems based on the Atmel AT91RM9200,
9918ceaf 343 AT91SAM9 processors.
4af6fee1 344
ccf50e23
RK
345config ARCH_BCMRING
346 bool "Broadcom BCMRING"
347 depends on MMU
348 select CPU_V6
349 select ARM_AMBA
82d63734 350 select ARM_TIMER_SP804
6d803ba7 351 select CLKDEV_LOOKUP
ccf50e23
RK
352 select GENERIC_CLOCKEVENTS
353 select ARCH_WANT_OPTIONAL_GPIOLIB
354 help
355 Support for Broadcom's BCMRing platform.
356
220e6cf7
RH
357config ARCH_HIGHBANK
358 bool "Calxeda Highbank-based"
359 select ARCH_WANT_OPTIONAL_GPIOLIB
360 select ARM_AMBA
361 select ARM_GIC
362 select ARM_TIMER_SP804
22d80379 363 select CACHE_L2X0
220e6cf7
RH
364 select CLKDEV_LOOKUP
365 select CPU_V7
366 select GENERIC_CLOCKEVENTS
367 select HAVE_ARM_SCU
3b55658a 368 select HAVE_SMP
fdfa64a4 369 select SPARSE_IRQ
220e6cf7
RH
370 select USE_OF
371 help
372 Support for the Calxeda Highbank SoC based boards.
373
1da177e4 374config ARCH_CLPS711X
4af6fee1 375 bool "Cirrus Logic CLPS711x/EP721x-based"
c750815e 376 select CPU_ARM720T
5cfc8ee0 377 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 378 select NEED_MACH_MEMORY_H
f999b8bd
MM
379 help
380 Support for Cirrus Logic 711x/721x based boards.
1da177e4 381
d94f944e
AV
382config ARCH_CNS3XXX
383 bool "Cavium Networks CNS3XXX family"
00d2711d 384 select CPU_V6K
d94f944e
AV
385 select GENERIC_CLOCKEVENTS
386 select ARM_GIC
ce5ea9f3 387 select MIGHT_HAVE_CACHE_L2X0
0b05da72 388 select MIGHT_HAVE_PCI
5f32f7a0 389 select PCI_DOMAINS if PCI
d94f944e
AV
390 help
391 Support for Cavium Networks CNS3XXX platform.
392
788c9700
RK
393config ARCH_GEMINI
394 bool "Cortina Systems Gemini"
395 select CPU_FA526
788c9700 396 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 397 select ARCH_USES_GETTIMEOFFSET
788c9700
RK
398 help
399 Support for the Cortina Systems Gemini family SoCs
400
3a6cb8ce
AB
401config ARCH_PRIMA2
402 bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
403 select CPU_V7
3a6cb8ce
AB
404 select NO_IOPORT
405 select GENERIC_CLOCKEVENTS
406 select CLKDEV_LOOKUP
407 select GENERIC_IRQ_CHIP
ce5ea9f3 408 select MIGHT_HAVE_CACHE_L2X0
3a6cb8ce
AB
409 select USE_OF
410 select ZONE_DMA
411 help
412 Support for CSR SiRFSoC ARM Cortex A9 Platform
413
1da177e4
LT
414config ARCH_EBSA110
415 bool "EBSA-110"
c750815e 416 select CPU_SA110
f7e68bbf 417 select ISA
c5eb2a2b 418 select NO_IOPORT
5cfc8ee0 419 select ARCH_USES_GETTIMEOFFSET
c334bc15 420 select NEED_MACH_IO_H
0cdc8b92 421 select NEED_MACH_MEMORY_H
1da177e4
LT
422 help
423 This is an evaluation board for the StrongARM processor available
f6c8965a 424 from Digital. It has limited hardware on-board, including an
1da177e4
LT
425 Ethernet interface, two PCMCIA sockets, two serial ports and a
426 parallel port.
427
e7736d47
LB
428config ARCH_EP93XX
429 bool "EP93xx-based"
c750815e 430 select CPU_ARM920T
e7736d47
LB
431 select ARM_AMBA
432 select ARM_VIC
6d803ba7 433 select CLKDEV_LOOKUP
7444a72e 434 select ARCH_REQUIRE_GPIOLIB
eb33575c 435 select ARCH_HAS_HOLES_MEMORYMODEL
5cfc8ee0 436 select ARCH_USES_GETTIMEOFFSET
5725aeae 437 select NEED_MACH_MEMORY_H
e7736d47
LB
438 help
439 This enables support for the Cirrus EP93xx series of CPUs.
440
1da177e4
LT
441config ARCH_FOOTBRIDGE
442 bool "FootBridge"
c750815e 443 select CPU_SA110
1da177e4 444 select FOOTBRIDGE
4e8d7637 445 select GENERIC_CLOCKEVENTS
d0ee9f40 446 select HAVE_IDE
c334bc15 447 select NEED_MACH_IO_H
0cdc8b92 448 select NEED_MACH_MEMORY_H
f999b8bd
MM
449 help
450 Support for systems based on the DC21285 companion chip
451 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 452
788c9700
RK
453config ARCH_MXC
454 bool "Freescale MXC/iMX-based"
788c9700 455 select GENERIC_CLOCKEVENTS
788c9700 456 select ARCH_REQUIRE_GPIOLIB
6d803ba7 457 select CLKDEV_LOOKUP
234b6ced 458 select CLKSRC_MMIO
8b6c44f1 459 select GENERIC_IRQ_CHIP
ffa2ea3f 460 select MULTI_IRQ_HANDLER
788c9700
RK
461 help
462 Support for Freescale MXC/iMX-based family of processors
463
1d3f33d5
SG
464config ARCH_MXS
465 bool "Freescale MXS-based"
466 select GENERIC_CLOCKEVENTS
467 select ARCH_REQUIRE_GPIOLIB
b9214b97 468 select CLKDEV_LOOKUP
5c61ddcf 469 select CLKSRC_MMIO
6abda3e1 470 select HAVE_CLK_PREPARE
1d3f33d5
SG
471 help
472 Support for Freescale MXS-based family of processors
473
4af6fee1
DS
474config ARCH_NETX
475 bool "Hilscher NetX based"
234b6ced 476 select CLKSRC_MMIO
c750815e 477 select CPU_ARM926T
4af6fee1 478 select ARM_VIC
2fcfe6b8 479 select GENERIC_CLOCKEVENTS
f999b8bd 480 help
4af6fee1
DS
481 This enables support for systems based on the Hilscher NetX Soc
482
483config ARCH_H720X
484 bool "Hynix HMS720x-based"
c750815e 485 select CPU_ARM720T
4af6fee1 486 select ISA_DMA_API
5cfc8ee0 487 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
488 help
489 This enables support for systems based on the Hynix HMS720x
490
3b938be6
RK
491config ARCH_IOP13XX
492 bool "IOP13xx-based"
493 depends on MMU
c750815e 494 select CPU_XSC3
3b938be6
RK
495 select PLAT_IOP
496 select PCI
497 select ARCH_SUPPORTS_MSI
8d5796d2 498 select VMSPLIT_1G
c334bc15 499 select NEED_MACH_IO_H
0cdc8b92 500 select NEED_MACH_MEMORY_H
13a5045d 501 select NEED_RET_TO_USER
3b938be6
RK
502 help
503 Support for Intel's IOP13XX (XScale) family of processors.
504
3f7e5815
LB
505config ARCH_IOP32X
506 bool "IOP32x-based"
a4f7e763 507 depends on MMU
c750815e 508 select CPU_XSCALE
c334bc15 509 select NEED_MACH_IO_H
13a5045d 510 select NEED_RET_TO_USER
7ae1f7ec 511 select PLAT_IOP
f7e68bbf 512 select PCI
bb2b180c 513 select ARCH_REQUIRE_GPIOLIB
f999b8bd 514 help
3f7e5815
LB
515 Support for Intel's 80219 and IOP32X (XScale) family of
516 processors.
517
518config ARCH_IOP33X
519 bool "IOP33x-based"
520 depends on MMU
c750815e 521 select CPU_XSCALE
c334bc15 522 select NEED_MACH_IO_H
13a5045d 523 select NEED_RET_TO_USER
7ae1f7ec 524 select PLAT_IOP
3f7e5815 525 select PCI
bb2b180c 526 select ARCH_REQUIRE_GPIOLIB
3f7e5815
LB
527 help
528 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 529
3b938be6
RK
530config ARCH_IXP23XX
531 bool "IXP23XX-based"
a4f7e763 532 depends on MMU
c750815e 533 select CPU_XSC3
3b938be6 534 select PCI
5cfc8ee0 535 select ARCH_USES_GETTIMEOFFSET
c334bc15 536 select NEED_MACH_IO_H
0cdc8b92 537 select NEED_MACH_MEMORY_H
f999b8bd 538 help
3b938be6 539 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
540
541config ARCH_IXP2000
542 bool "IXP2400/2800-based"
a4f7e763 543 depends on MMU
c750815e 544 select CPU_XSCALE
f7e68bbf 545 select PCI
5cfc8ee0 546 select ARCH_USES_GETTIMEOFFSET
c334bc15 547 select NEED_MACH_IO_H
0cdc8b92 548 select NEED_MACH_MEMORY_H
f999b8bd
MM
549 help
550 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 551
3b938be6
RK
552config ARCH_IXP4XX
553 bool "IXP4xx-based"
a4f7e763 554 depends on MMU
58af4a24 555 select ARCH_HAS_DMA_SET_COHERENT_MASK
234b6ced 556 select CLKSRC_MMIO
c750815e 557 select CPU_XSCALE
8858e9af 558 select GENERIC_GPIO
3b938be6 559 select GENERIC_CLOCKEVENTS
0b05da72 560 select MIGHT_HAVE_PCI
c334bc15 561 select NEED_MACH_IO_H
485bdde7 562 select DMABOUNCE if PCI
c4713074 563 help
3b938be6 564 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 565
edabd38e
SB
566config ARCH_DOVE
567 bool "Marvell Dove"
7b769bb3 568 select CPU_V7
edabd38e 569 select PCI
edabd38e 570 select ARCH_REQUIRE_GPIOLIB
edabd38e 571 select GENERIC_CLOCKEVENTS
c334bc15 572 select NEED_MACH_IO_H
edabd38e
SB
573 select PLAT_ORION
574 help
575 Support for the Marvell Dove SoC 88AP510
576
651c74c7
SB
577config ARCH_KIRKWOOD
578 bool "Marvell Kirkwood"
c750815e 579 select CPU_FEROCEON
651c74c7 580 select PCI
a8865655 581 select ARCH_REQUIRE_GPIOLIB
651c74c7 582 select GENERIC_CLOCKEVENTS
c334bc15 583 select NEED_MACH_IO_H
651c74c7
SB
584 select PLAT_ORION
585 help
586 Support for the following Marvell Kirkwood series SoCs:
587 88F6180, 88F6192 and 88F6281.
588
40805949
KW
589config ARCH_LPC32XX
590 bool "NXP LPC32XX"
234b6ced 591 select CLKSRC_MMIO
40805949
KW
592 select CPU_ARM926T
593 select ARCH_REQUIRE_GPIOLIB
594 select HAVE_IDE
595 select ARM_AMBA
596 select USB_ARCH_HAS_OHCI
6d803ba7 597 select CLKDEV_LOOKUP
40805949
KW
598 select GENERIC_CLOCKEVENTS
599 help
600 Support for the NXP LPC32XX family of processors
601
794d15b2
SS
602config ARCH_MV78XX0
603 bool "Marvell MV78xx0"
c750815e 604 select CPU_FEROCEON
794d15b2 605 select PCI
a8865655 606 select ARCH_REQUIRE_GPIOLIB
794d15b2 607 select GENERIC_CLOCKEVENTS
c334bc15 608 select NEED_MACH_IO_H
794d15b2
SS
609 select PLAT_ORION
610 help
611 Support for the following Marvell MV78xx0 series SoCs:
612 MV781x0, MV782x0.
613
9dd0b194 614config ARCH_ORION5X
585cf175
TP
615 bool "Marvell Orion"
616 depends on MMU
c750815e 617 select CPU_FEROCEON
038ee083 618 select PCI
a8865655 619 select ARCH_REQUIRE_GPIOLIB
51cbff1d 620 select GENERIC_CLOCKEVENTS
69b02f6a 621 select PLAT_ORION
585cf175 622 help
9dd0b194 623 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb 624 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
d323ade1 625 Orion-2 (5281), Orion-1-90 (6183).
585cf175 626
788c9700 627config ARCH_MMP
2f7e8fae 628 bool "Marvell PXA168/910/MMP2"
788c9700 629 depends on MMU
788c9700 630 select ARCH_REQUIRE_GPIOLIB
6d803ba7 631 select CLKDEV_LOOKUP
788c9700 632 select GENERIC_CLOCKEVENTS
157d2644 633 select GPIO_PXA
788c9700
RK
634 select TICK_ONESHOT
635 select PLAT_PXA
0bd86961 636 select SPARSE_IRQ
3c7241bd 637 select GENERIC_ALLOCATOR
788c9700 638 help
2f7e8fae 639 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
788c9700
RK
640
641config ARCH_KS8695
642 bool "Micrel/Kendin KS8695"
643 select CPU_ARM922T
98830bc9 644 select ARCH_REQUIRE_GPIOLIB
5cfc8ee0 645 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 646 select NEED_MACH_MEMORY_H
788c9700
RK
647 help
648 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
649 System-on-Chip devices.
650
788c9700
RK
651config ARCH_W90X900
652 bool "Nuvoton W90X900 CPU"
653 select CPU_ARM926T
c52d3d68 654 select ARCH_REQUIRE_GPIOLIB
6d803ba7 655 select CLKDEV_LOOKUP
6fa5d5f7 656 select CLKSRC_MMIO
58b5369e 657 select GENERIC_CLOCKEVENTS
788c9700 658 help
a8bc4ead 659 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
660 At present, the w90x900 has been renamed nuc900, regarding
661 the ARM series product line, you can login the following
662 link address to know more.
663
664 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
665 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
788c9700 666
c5f80065
EG
667config ARCH_TEGRA
668 bool "NVIDIA Tegra"
4073723a 669 select CLKDEV_LOOKUP
234b6ced 670 select CLKSRC_MMIO
c5f80065
EG
671 select GENERIC_CLOCKEVENTS
672 select GENERIC_GPIO
673 select HAVE_CLK
3b55658a 674 select HAVE_SMP
ce5ea9f3 675 select MIGHT_HAVE_CACHE_L2X0
c334bc15 676 select NEED_MACH_IO_H if PCI
7056d423 677 select ARCH_HAS_CPUFREQ
c5f80065
EG
678 help
679 This enables support for NVIDIA Tegra based systems (Tegra APX,
680 Tegra 6xx and Tegra 2 series).
681
af75655c
JI
682config ARCH_PICOXCELL
683 bool "Picochip picoXcell"
684 select ARCH_REQUIRE_GPIOLIB
685 select ARM_PATCH_PHYS_VIRT
686 select ARM_VIC
687 select CPU_V6K
688 select DW_APB_TIMER
689 select GENERIC_CLOCKEVENTS
690 select GENERIC_GPIO
af75655c
JI
691 select HAVE_TCM
692 select NO_IOPORT
98e27a5c 693 select SPARSE_IRQ
af75655c
JI
694 select USE_OF
695 help
696 This enables support for systems based on the Picochip picoXcell
697 family of Femtocell devices. The picoxcell support requires device tree
698 for all boards.
699
4af6fee1
DS
700config ARCH_PNX4008
701 bool "Philips Nexperia PNX4008 Mobile"
c750815e 702 select CPU_ARM926T
6d803ba7 703 select CLKDEV_LOOKUP
5cfc8ee0 704 select ARCH_USES_GETTIMEOFFSET
4af6fee1
DS
705 help
706 This enables support for Philips PNX4008 mobile platform.
707
1da177e4 708config ARCH_PXA
2c8086a5 709 bool "PXA2xx/PXA3xx-based"
a4f7e763 710 depends on MMU
034d2f5a 711 select ARCH_MTD_XIP
89c52ed4 712 select ARCH_HAS_CPUFREQ
6d803ba7 713 select CLKDEV_LOOKUP
234b6ced 714 select CLKSRC_MMIO
7444a72e 715 select ARCH_REQUIRE_GPIOLIB
981d0f39 716 select GENERIC_CLOCKEVENTS
157d2644 717 select GPIO_PXA
a88264c2 718 select TICK_ONESHOT
bd5ce433 719 select PLAT_PXA
6ac6b817 720 select SPARSE_IRQ
4e234cc0 721 select AUTO_ZRELADDR
8a97ae2f 722 select MULTI_IRQ_HANDLER
15e0d9e3 723 select ARM_CPU_SUSPEND if PM
d0ee9f40 724 select HAVE_IDE
f999b8bd 725 help
2c8086a5 726 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4 727
788c9700
RK
728config ARCH_MSM
729 bool "Qualcomm MSM"
4b536b8d 730 select HAVE_CLK
49cbe786 731 select GENERIC_CLOCKEVENTS
923a081c 732 select ARCH_REQUIRE_GPIOLIB
bd32344a 733 select CLKDEV_LOOKUP
49cbe786 734 help
4b53eb4f
DW
735 Support for Qualcomm MSM/QSD based systems. This runs on the
736 apps processor of the MSM/QSD and depends on a shared memory
737 interface to the modem processor which runs the baseband
738 stack and controls some vital subsystems
739 (clock and power control, etc).
49cbe786 740
c793c1b0 741config ARCH_SHMOBILE
6d72ad35
PM
742 bool "Renesas SH-Mobile / R-Mobile"
743 select HAVE_CLK
5e93c6b4 744 select CLKDEV_LOOKUP
aa3831cf 745 select HAVE_MACH_CLKDEV
3b55658a 746 select HAVE_SMP
6d72ad35 747 select GENERIC_CLOCKEVENTS
ce5ea9f3 748 select MIGHT_HAVE_CACHE_L2X0
6d72ad35
PM
749 select NO_IOPORT
750 select SPARSE_IRQ
60f1435c 751 select MULTI_IRQ_HANDLER
e3e01091 752 select PM_GENERIC_DOMAINS if PM
0cdc8b92 753 select NEED_MACH_MEMORY_H
c793c1b0 754 help
6d72ad35 755 Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
c793c1b0 756
1da177e4
LT
757config ARCH_RPC
758 bool "RiscPC"
759 select ARCH_ACORN
760 select FIQ
a08b6b79 761 select ARCH_MAY_HAVE_PC_FDC
341eb781 762 select HAVE_PATA_PLATFORM
065909b9 763 select ISA_DMA_API
5ea81769 764 select NO_IOPORT
07f841b7 765 select ARCH_SPARSEMEM_ENABLE
5cfc8ee0 766 select ARCH_USES_GETTIMEOFFSET
d0ee9f40 767 select HAVE_IDE
c334bc15 768 select NEED_MACH_IO_H
0cdc8b92 769 select NEED_MACH_MEMORY_H
1da177e4
LT
770 help
771 On the Acorn Risc-PC, Linux can support the internal IDE disk and
772 CD-ROM interface, serial and parallel port, and the floppy drive.
773
774config ARCH_SA1100
775 bool "SA1100-based"
234b6ced 776 select CLKSRC_MMIO
c750815e 777 select CPU_SA1100
f7e68bbf 778 select ISA
05944d74 779 select ARCH_SPARSEMEM_ENABLE
034d2f5a 780 select ARCH_MTD_XIP
89c52ed4 781 select ARCH_HAS_CPUFREQ
1937f5b9 782 select CPU_FREQ
3e238be2 783 select GENERIC_CLOCKEVENTS
4a8f8340 784 select CLKDEV_LOOKUP
3e238be2 785 select TICK_ONESHOT
7444a72e 786 select ARCH_REQUIRE_GPIOLIB
d0ee9f40 787 select HAVE_IDE
0cdc8b92 788 select NEED_MACH_MEMORY_H
375dec92 789 select SPARSE_IRQ
f999b8bd
MM
790 help
791 Support for StrongARM 11x0 based boards.
1da177e4 792
b130d5c2
KK
793config ARCH_S3C24XX
794 bool "Samsung S3C24XX SoCs"
0a938b97 795 select GENERIC_GPIO
9d56c02a 796 select ARCH_HAS_CPUFREQ
9483a578 797 select HAVE_CLK
e83626f2 798 select CLKDEV_LOOKUP
5cfc8ee0 799 select ARCH_USES_GETTIMEOFFSET
20676c15 800 select HAVE_S3C2410_I2C if I2C
b130d5c2
KK
801 select HAVE_S3C_RTC if RTC_CLASS
802 select HAVE_S3C2410_WATCHDOG if WATCHDOG
c334bc15 803 select NEED_MACH_IO_H
1da177e4 804 help
b130d5c2
KK
805 Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
806 and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
807 (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
808 Samsung SMDK2410 development board (and derivatives).
63b1f51b 809
a08ab637
BD
810config ARCH_S3C64XX
811 bool "Samsung S3C64XX"
89f1fa08 812 select PLAT_SAMSUNG
89f0ce72 813 select CPU_V6
89f0ce72 814 select ARM_VIC
a08ab637 815 select HAVE_CLK
6700397a 816 select HAVE_TCM
226e85f4 817 select CLKDEV_LOOKUP
89f0ce72 818 select NO_IOPORT
5cfc8ee0 819 select ARCH_USES_GETTIMEOFFSET
89c52ed4 820 select ARCH_HAS_CPUFREQ
89f0ce72
BD
821 select ARCH_REQUIRE_GPIOLIB
822 select SAMSUNG_CLKSRC
823 select SAMSUNG_IRQ_VIC_TIMER
89f0ce72 824 select S3C_GPIO_TRACK
89f0ce72
BD
825 select S3C_DEV_NAND
826 select USB_ARCH_HAS_OHCI
827 select SAMSUNG_GPIOLIB_4BIT
20676c15 828 select HAVE_S3C2410_I2C if I2C
c39d8d55 829 select HAVE_S3C2410_WATCHDOG if WATCHDOG
a08ab637
BD
830 help
831 Samsung S3C64XX series based systems
832
49b7a491
KK
833config ARCH_S5P64X0
834 bool "Samsung S5P6440 S5P6450"
c4ffccdd
KK
835 select CPU_V6
836 select GENERIC_GPIO
837 select HAVE_CLK
d8b22d25 838 select CLKDEV_LOOKUP
0665ccc4 839 select CLKSRC_MMIO
c39d8d55 840 select HAVE_S3C2410_WATCHDOG if WATCHDOG
9e65bbf2 841 select GENERIC_CLOCKEVENTS
20676c15 842 select HAVE_S3C2410_I2C if I2C
754961a8 843 select HAVE_S3C_RTC if RTC_CLASS
c4ffccdd 844 help
49b7a491
KK
845 Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
846 SMDK6450.
c4ffccdd 847
acc84707
MS
848config ARCH_S5PC100
849 bool "Samsung S5PC100"
5a7652f2
BM
850 select GENERIC_GPIO
851 select HAVE_CLK
29e8eb0f 852 select CLKDEV_LOOKUP
5a7652f2 853 select CPU_V7
925c68cd 854 select ARCH_USES_GETTIMEOFFSET
20676c15 855 select HAVE_S3C2410_I2C if I2C
754961a8 856 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 857 select HAVE_S3C2410_WATCHDOG if WATCHDOG
5a7652f2 858 help
acc84707 859 Samsung S5PC100 series based systems
5a7652f2 860
170f4e42
KK
861config ARCH_S5PV210
862 bool "Samsung S5PV210/S5PC110"
863 select CPU_V7
eecb6a84 864 select ARCH_SPARSEMEM_ENABLE
0f75a96b 865 select ARCH_HAS_HOLES_MEMORYMODEL
170f4e42
KK
866 select GENERIC_GPIO
867 select HAVE_CLK
b2a9dd46 868 select CLKDEV_LOOKUP
0665ccc4 869 select CLKSRC_MMIO
d8144aea 870 select ARCH_HAS_CPUFREQ
9e65bbf2 871 select GENERIC_CLOCKEVENTS
20676c15 872 select HAVE_S3C2410_I2C if I2C
754961a8 873 select HAVE_S3C_RTC if RTC_CLASS
c39d8d55 874 select HAVE_S3C2410_WATCHDOG if WATCHDOG
0cdc8b92 875 select NEED_MACH_MEMORY_H
170f4e42
KK
876 help
877 Samsung S5PV210/S5PC110 series based systems
878
83014579
KK
879config ARCH_EXYNOS
880 bool "SAMSUNG EXYNOS"
cc0e72b8 881 select CPU_V7
f567fa6f 882 select ARCH_SPARSEMEM_ENABLE
0f75a96b 883 select ARCH_HAS_HOLES_MEMORYMODEL
cc0e72b8
CY
884 select GENERIC_GPIO
885 select HAVE_CLK
badc4f2d 886 select CLKDEV_LOOKUP
b333fb16 887 select ARCH_HAS_CPUFREQ
cc0e72b8 888 select GENERIC_CLOCKEVENTS
754961a8 889 select HAVE_S3C_RTC if RTC_CLASS
20676c15 890 select HAVE_S3C2410_I2C if I2C
c39d8d55 891 select HAVE_S3C2410_WATCHDOG if WATCHDOG
0cdc8b92 892 select NEED_MACH_MEMORY_H
cc0e72b8 893 help
83014579 894 Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
cc0e72b8 895
1da177e4
LT
896config ARCH_SHARK
897 bool "Shark"
c750815e 898 select CPU_SA110
f7e68bbf
RK
899 select ISA
900 select ISA_DMA
3bca103a 901 select ZONE_DMA
f7e68bbf 902 select PCI
5cfc8ee0 903 select ARCH_USES_GETTIMEOFFSET
0cdc8b92 904 select NEED_MACH_MEMORY_H
c334bc15 905 select NEED_MACH_IO_H
f999b8bd
MM
906 help
907 Support for the StrongARM based Digital DNARD machine, also known
908 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4 909
d98aac75
LW
910config ARCH_U300
911 bool "ST-Ericsson U300 Series"
912 depends on MMU
234b6ced 913 select CLKSRC_MMIO
d98aac75 914 select CPU_ARM926T
bc581770 915 select HAVE_TCM
d98aac75 916 select ARM_AMBA
5485c1e0 917 select ARM_PATCH_PHYS_VIRT
d98aac75 918 select ARM_VIC
d98aac75 919 select GENERIC_CLOCKEVENTS
6d803ba7 920 select CLKDEV_LOOKUP
aa3831cf 921 select HAVE_MACH_CLKDEV
d98aac75 922 select GENERIC_GPIO
cc890cd7 923 select ARCH_REQUIRE_GPIOLIB
d98aac75
LW
924 help
925 Support for ST-Ericsson U300 series mobile platforms.
926
ccf50e23
RK
927config ARCH_U8500
928 bool "ST-Ericsson U8500 Series"
67ae14fc 929 depends on MMU
ccf50e23
RK
930 select CPU_V7
931 select ARM_AMBA
ccf50e23 932 select GENERIC_CLOCKEVENTS
6d803ba7 933 select CLKDEV_LOOKUP
94bdc0e2 934 select ARCH_REQUIRE_GPIOLIB
7c1a70e9 935 select ARCH_HAS_CPUFREQ
3b55658a 936 select HAVE_SMP
ce5ea9f3 937 select MIGHT_HAVE_CACHE_L2X0
ccf50e23
RK
938 help
939 Support for ST-Ericsson's Ux500 architecture
940
941config ARCH_NOMADIK
942 bool "STMicroelectronics Nomadik"
943 select ARM_AMBA
944 select ARM_VIC
945 select CPU_ARM926T
6d803ba7 946 select CLKDEV_LOOKUP
ccf50e23 947 select GENERIC_CLOCKEVENTS
ce5ea9f3 948 select MIGHT_HAVE_CACHE_L2X0
ccf50e23
RK
949 select ARCH_REQUIRE_GPIOLIB
950 help
951 Support for the Nomadik platform by ST-Ericsson
952
7c6337e2
KH
953config ARCH_DAVINCI
954 bool "TI DaVinci"
7c6337e2 955 select GENERIC_CLOCKEVENTS
dce1115b 956 select ARCH_REQUIRE_GPIOLIB
3bca103a 957 select ZONE_DMA
9232fcc9 958 select HAVE_IDE
6d803ba7 959 select CLKDEV_LOOKUP
20e9969b 960 select GENERIC_ALLOCATOR
dc7ad3b3 961 select GENERIC_IRQ_CHIP
ae88e05a 962 select ARCH_HAS_HOLES_MEMORYMODEL
7c6337e2
KH
963 help
964 Support for TI's DaVinci platform.
965
3b938be6
RK
966config ARCH_OMAP
967 bool "TI OMAP"
9483a578 968 select HAVE_CLK
7444a72e 969 select ARCH_REQUIRE_GPIOLIB
89c52ed4 970 select ARCH_HAS_CPUFREQ
354a183f 971 select CLKSRC_MMIO
06cad098 972 select GENERIC_CLOCKEVENTS
9af915da 973 select ARCH_HAS_HOLES_MEMORYMODEL
3b938be6 974 help
6e457bb0 975 Support for TI's OMAP platform (OMAP1/2/3/4).
3b938be6 976
cee37e50
VK
977config PLAT_SPEAR
978 bool "ST SPEAr"
979 select ARM_AMBA
980 select ARCH_REQUIRE_GPIOLIB
6d803ba7 981 select CLKDEV_LOOKUP
d6e15d78 982 select CLKSRC_MMIO
cee37e50 983 select GENERIC_CLOCKEVENTS
cee37e50
VK
984 select HAVE_CLK
985 help
986 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
987
21f47fbc
AC
988config ARCH_VT8500
989 bool "VIA/WonderMedia 85xx"
990 select CPU_ARM926T
991 select GENERIC_GPIO
992 select ARCH_HAS_CPUFREQ
993 select GENERIC_CLOCKEVENTS
994 select ARCH_REQUIRE_GPIOLIB
995 select HAVE_PWM
996 help
997 Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
02c981c0 998
b85a3ef4
JL
999config ARCH_ZYNQ
1000 bool "Xilinx Zynq ARM Cortex A9 Platform"
02c981c0 1001 select CPU_V7
02c981c0
BD
1002 select GENERIC_CLOCKEVENTS
1003 select CLKDEV_LOOKUP
b85a3ef4
JL
1004 select ARM_GIC
1005 select ARM_AMBA
1006 select ICST
ce5ea9f3 1007 select MIGHT_HAVE_CACHE_L2X0
02c981c0 1008 select USE_OF
02c981c0 1009 help
b85a3ef4 1010 Support for Xilinx Zynq ARM Cortex A9 Platform
1da177e4
LT
1011endchoice
1012
ccf50e23
RK
1013#
1014# This is sorted alphabetically by mach-* pathname. However, plat-*
1015# Kconfigs may be included either alphabetically (according to the
1016# plat- suffix) or along side the corresponding mach-* source.
1017#
95b8f20f
RK
1018source "arch/arm/mach-at91/Kconfig"
1019
1020source "arch/arm/mach-bcmring/Kconfig"
1021
1da177e4
LT
1022source "arch/arm/mach-clps711x/Kconfig"
1023
d94f944e
AV
1024source "arch/arm/mach-cns3xxx/Kconfig"
1025
95b8f20f
RK
1026source "arch/arm/mach-davinci/Kconfig"
1027
1028source "arch/arm/mach-dove/Kconfig"
1029
e7736d47
LB
1030source "arch/arm/mach-ep93xx/Kconfig"
1031
1da177e4
LT
1032source "arch/arm/mach-footbridge/Kconfig"
1033
59d3a193
PZ
1034source "arch/arm/mach-gemini/Kconfig"
1035
95b8f20f
RK
1036source "arch/arm/mach-h720x/Kconfig"
1037
1da177e4
LT
1038source "arch/arm/mach-integrator/Kconfig"
1039
3f7e5815
LB
1040source "arch/arm/mach-iop32x/Kconfig"
1041
1042source "arch/arm/mach-iop33x/Kconfig"
1da177e4 1043
285f5fa7
DW
1044source "arch/arm/mach-iop13xx/Kconfig"
1045
1da177e4
LT
1046source "arch/arm/mach-ixp4xx/Kconfig"
1047
1048source "arch/arm/mach-ixp2000/Kconfig"
1049
c4713074
LB
1050source "arch/arm/mach-ixp23xx/Kconfig"
1051
95b8f20f
RK
1052source "arch/arm/mach-kirkwood/Kconfig"
1053
1054source "arch/arm/mach-ks8695/Kconfig"
1055
40805949
KW
1056source "arch/arm/mach-lpc32xx/Kconfig"
1057
95b8f20f
RK
1058source "arch/arm/mach-msm/Kconfig"
1059
794d15b2
SS
1060source "arch/arm/mach-mv78xx0/Kconfig"
1061
95b8f20f 1062source "arch/arm/plat-mxc/Kconfig"
1da177e4 1063
1d3f33d5
SG
1064source "arch/arm/mach-mxs/Kconfig"
1065
95b8f20f 1066source "arch/arm/mach-netx/Kconfig"
49cbe786 1067
95b8f20f
RK
1068source "arch/arm/mach-nomadik/Kconfig"
1069source "arch/arm/plat-nomadik/Kconfig"
1070
d48af15e
TL
1071source "arch/arm/plat-omap/Kconfig"
1072
1073source "arch/arm/mach-omap1/Kconfig"
1da177e4 1074
1dbae815
TL
1075source "arch/arm/mach-omap2/Kconfig"
1076
9dd0b194 1077source "arch/arm/mach-orion5x/Kconfig"
585cf175 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 1089source "arch/arm/plat-s3c24xx/Kconfig"
c4ffccdd 1090source "arch/arm/plat-s5p/Kconfig"
a21765a7 1091
cee37e50 1092source "arch/arm/plat-spear/Kconfig"
a21765a7 1093
85fd6d63 1094source "arch/arm/mach-s3c24xx/Kconfig"
b130d5c2 1095if ARCH_S3C24XX
a21765a7
BD
1096source "arch/arm/mach-s3c2412/Kconfig"
1097source "arch/arm/mach-s3c2440/Kconfig"
a21765a7 1098endif
1da177e4 1099
a08ab637 1100if ARCH_S3C64XX
431107ea 1101source "arch/arm/mach-s3c64xx/Kconfig"
a08ab637
BD
1102endif
1103
49b7a491 1104source "arch/arm/mach-s5p64x0/Kconfig"
c4ffccdd 1105
5a7652f2 1106source "arch/arm/mach-s5pc100/Kconfig"
5a7652f2 1107
170f4e42
KK
1108source "arch/arm/mach-s5pv210/Kconfig"
1109
83014579 1110source "arch/arm/mach-exynos/Kconfig"
cc0e72b8 1111
882d01f9 1112source "arch/arm/mach-shmobile/Kconfig"
52c543f9 1113
c5f80065
EG
1114source "arch/arm/mach-tegra/Kconfig"
1115
95b8f20f 1116source "arch/arm/mach-u300/Kconfig"
1da177e4 1117
95b8f20f 1118source "arch/arm/mach-ux500/Kconfig"
1da177e4
LT
1119
1120source "arch/arm/mach-versatile/Kconfig"
1121
ceade897 1122source "arch/arm/mach-vexpress/Kconfig"
420c34e4 1123source "arch/arm/plat-versatile/Kconfig"
ceade897 1124
21f47fbc
AC
1125source "arch/arm/mach-vt8500/Kconfig"
1126
7ec80ddf 1127source "arch/arm/mach-w90x900/Kconfig"
1128
1da177e4
LT
1129# Definitions to make life easier
1130config ARCH_ACORN
1131 bool
1132
7ae1f7ec
LB
1133config PLAT_IOP
1134 bool
469d3044 1135 select GENERIC_CLOCKEVENTS
7ae1f7ec 1136
69b02f6a
LB
1137config PLAT_ORION
1138 bool
bfe45e0b 1139 select CLKSRC_MMIO
dc7ad3b3 1140 select GENERIC_IRQ_CHIP
69b02f6a 1141
bd5ce433
EM
1142config PLAT_PXA
1143 bool
1144
f4b8b319
RK
1145config PLAT_VERSATILE
1146 bool
1147
e3887714
RK
1148config ARM_TIMER_SP804
1149 bool
bfe45e0b 1150 select CLKSRC_MMIO
a7bf6162 1151 select HAVE_SCHED_CLOCK
e3887714 1152
1da177e4
LT
1153source arch/arm/mm/Kconfig
1154
958cab0f
RK
1155config ARM_NR_BANKS
1156 int
1157 default 16 if ARCH_EP93XX
1158 default 8
1159
afe4b25e
LB
1160config IWMMXT
1161 bool "Enable iWMMXt support"
ef6c8445
HZ
1162 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1163 default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
afe4b25e
LB
1164 help
1165 Enable support for iWMMXt context switching at run time if
1166 running on a CPU that supports it.
1167
1da177e4
LT
1168config XSCALE_PMU
1169 bool
bfc994b5 1170 depends on CPU_XSCALE
1da177e4
LT
1171 default y
1172
0f4f0672 1173config CPU_HAS_PMU
e399b1a4 1174 depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
8954bb0d 1175 (!ARCH_OMAP3 || OMAP3_EMU)
0f4f0672
JI
1176 default y
1177 bool
1178
52108641 1179config MULTI_IRQ_HANDLER
1180 bool
1181 help
1182 Allow each machine to specify it's own IRQ handler at run time.
1183
3b93e7b0
HC
1184if !MMU
1185source "arch/arm/Kconfig-nommu"
1186endif
1187
9cba3ccc
CM
1188config ARM_ERRATA_411920
1189 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
e399b1a4 1190 depends on CPU_V6 || CPU_V6K
9cba3ccc
CM
1191 help
1192 Invalidation of the Instruction Cache operation can
1193 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1194 It does not affect the MPCore. This option enables the ARM Ltd.
1195 recommended workaround.
1196
7ce236fc
CM
1197config ARM_ERRATA_430973
1198 bool "ARM errata: Stale prediction on replaced interworking branch"
1199 depends on CPU_V7
1200 help
1201 This option enables the workaround for the 430973 Cortex-A8
1202 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1203 interworking branch is replaced with another code sequence at the
1204 same virtual address, whether due to self-modifying code or virtual
1205 to physical address re-mapping, Cortex-A8 does not recover from the
1206 stale interworking branch prediction. This results in Cortex-A8
1207 executing the new code sequence in the incorrect ARM or Thumb state.
1208 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1209 and also flushes the branch target cache at every context switch.
1210 Note that setting specific bits in the ACTLR register may not be
1211 available in non-secure mode.
1212
855c551f
CM
1213config ARM_ERRATA_458693
1214 bool "ARM errata: Processor deadlock when a false hazard is created"
1215 depends on CPU_V7
1216 help
1217 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1218 erratum. For very specific sequences of memory operations, it is
1219 possible for a hazard condition intended for a cache line to instead
1220 be incorrectly associated with a different cache line. This false
1221 hazard might then cause a processor deadlock. The workaround enables
1222 the L1 caching of the NEON accesses and disables the PLD instruction
1223 in the ACTLR register. Note that setting specific bits in the ACTLR
1224 register may not be available in non-secure mode.
1225
0516e464
CM
1226config ARM_ERRATA_460075
1227 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1228 depends on CPU_V7
1229 help
1230 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1231 erratum. Any asynchronous access to the L2 cache may encounter a
1232 situation in which recent store transactions to the L2 cache are lost
1233 and overwritten with stale memory contents from external memory. The
1234 workaround disables the write-allocate mode for the L2 cache via the
1235 ACTLR register. Note that setting specific bits in the ACTLR register
1236 may not be available in non-secure mode.
1237
9f05027c
WD
1238config ARM_ERRATA_742230
1239 bool "ARM errata: DMB operation may be faulty"
1240 depends on CPU_V7 && SMP
1241 help
1242 This option enables the workaround for the 742230 Cortex-A9
1243 (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1244 between two write operations may not ensure the correct visibility
1245 ordering of the two writes. This workaround sets a specific bit in
1246 the diagnostic register of the Cortex-A9 which causes the DMB
1247 instruction to behave as a DSB, ensuring the correct behaviour of
1248 the two writes.
1249
a672e99b
WD
1250config ARM_ERRATA_742231
1251 bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1252 depends on CPU_V7 && SMP
1253 help
1254 This option enables the workaround for the 742231 Cortex-A9
1255 (r2p0..r2p2) erratum. Under certain conditions, specific to the
1256 Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1257 accessing some data located in the same cache line, may get corrupted
1258 data due to bad handling of the address hazard when the line gets
1259 replaced from one of the CPUs at the same time as another CPU is
1260 accessing it. This workaround sets specific bits in the diagnostic
1261 register of the Cortex-A9 which reduces the linefill issuing
1262 capabilities of the processor.
1263
9e65582a 1264config PL310_ERRATA_588369
fa0ce403 1265 bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
2839e06c 1266 depends on CACHE_L2X0
9e65582a
SS
1267 help
1268 The PL310 L2 cache controller implements three types of Clean &
1269 Invalidate maintenance operations: by Physical Address
1270 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1271 They are architecturally defined to behave as the execution of a
1272 clean operation followed immediately by an invalidate operation,
1273 both performing to the same memory location. This functionality
1274 is not correctly implemented in PL310 as clean lines are not
2839e06c 1275 invalidated as a result of these operations.
cdf357f1
WD
1276
1277config ARM_ERRATA_720789
1278 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
e66dc745 1279 depends on CPU_V7
cdf357f1
WD
1280 help
1281 This option enables the workaround for the 720789 Cortex-A9 (prior to
1282 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1283 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1284 As a consequence of this erratum, some TLB entries which should be
1285 invalidated are not, resulting in an incoherency in the system page
1286 tables. The workaround changes the TLB flushing routines to invalidate
1287 entries regardless of the ASID.
475d92fc 1288
1f0090a1 1289config PL310_ERRATA_727915
fa0ce403 1290 bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
1f0090a1
RK
1291 depends on CACHE_L2X0
1292 help
1293 PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1294 operation (offset 0x7FC). This operation runs in background so that
1295 PL310 can handle normal accesses while it is in progress. Under very
1296 rare circumstances, due to this erratum, write data can be lost when
1297 PL310 treats a cacheable write transaction during a Clean &
1298 Invalidate by Way operation.
1299
475d92fc
WD
1300config ARM_ERRATA_743622
1301 bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1302 depends on CPU_V7
1303 help
1304 This option enables the workaround for the 743622 Cortex-A9
efbc74ac 1305 (r2p*) erratum. Under very rare conditions, a faulty
475d92fc
WD
1306 optimisation in the Cortex-A9 Store Buffer may lead to data
1307 corruption. This workaround sets a specific bit in the diagnostic
1308 register of the Cortex-A9 which disables the Store Buffer
1309 optimisation, preventing the defect from occurring. This has no
1310 visible impact on the overall performance or power consumption of the
1311 processor.
1312
9a27c27c
WD
1313config ARM_ERRATA_751472
1314 bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
ba90c516 1315 depends on CPU_V7
9a27c27c
WD
1316 help
1317 This option enables the workaround for the 751472 Cortex-A9 (prior
1318 to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1319 completion of a following broadcasted operation if the second
1320 operation is received by a CPU before the ICIALLUIS has completed,
1321 potentially leading to corrupted entries in the cache or TLB.
1322
fa0ce403
WD
1323config PL310_ERRATA_753970
1324 bool "PL310 errata: cache sync operation may be faulty"
885028e4
SK
1325 depends on CACHE_PL310
1326 help
1327 This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1328
1329 Under some condition the effect of cache sync operation on
1330 the store buffer still remains when the operation completes.
1331 This means that the store buffer is always asked to drain and
1332 this prevents it from merging any further writes. The workaround
1333 is to replace the normal offset of cache sync operation (0x730)
1334 by another offset targeting an unmapped PL310 register 0x740.
1335 This has the same effect as the cache sync operation: store buffer
1336 drain and waiting for all buffers empty.
1337
fcbdc5fe
WD
1338config ARM_ERRATA_754322
1339 bool "ARM errata: possible faulty MMU translations following an ASID switch"
1340 depends on CPU_V7
1341 help
1342 This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1343 r3p*) erratum. A speculative memory access may cause a page table walk
1344 which starts prior to an ASID switch but completes afterwards. This
1345 can populate the micro-TLB with a stale entry which may be hit with
1346 the new ASID. This workaround places two dsb instructions in the mm
1347 switching code so that no page table walks can cross the ASID switch.
1348
5dab26af
WD
1349config ARM_ERRATA_754327
1350 bool "ARM errata: no automatic Store Buffer drain"
1351 depends on CPU_V7 && SMP
1352 help
1353 This option enables the workaround for the 754327 Cortex-A9 (prior to
1354 r2p0) erratum. The Store Buffer does not have any automatic draining
1355 mechanism and therefore a livelock may occur if an external agent
1356 continuously polls a memory location waiting to observe an update.
1357 This workaround defines cpu_relax() as smp_mb(), preventing correctly
1358 written polling loops from denying visibility of updates to memory.
1359
145e10e1
CM
1360config ARM_ERRATA_364296
1361 bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1362 depends on CPU_V6 && !SMP
1363 help
1364 This options enables the workaround for the 364296 ARM1136
1365 r0p2 erratum (possible cache data corruption with
1366 hit-under-miss enabled). It sets the undocumented bit 31 in
1367 the auxiliary control register and the FI bit in the control
1368 register, thus disabling hit-under-miss without putting the
1369 processor into full low interrupt latency mode. ARM11MPCore
1370 is not affected.
1371
f630c1bd
WD
1372config ARM_ERRATA_764369
1373 bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1374 depends on CPU_V7 && SMP
1375 help
1376 This option enables the workaround for erratum 764369
1377 affecting Cortex-A9 MPCore with two or more processors (all
1378 current revisions). Under certain timing circumstances, a data
1379 cache line maintenance operation by MVA targeting an Inner
1380 Shareable memory region may fail to proceed up to either the
1381 Point of Coherency or to the Point of Unification of the
1382 system. This workaround adds a DSB instruction before the
1383 relevant cache maintenance functions and sets a specific bit
1384 in the diagnostic control register of the SCU.
1385
11ed0ba1
WD
1386config PL310_ERRATA_769419
1387 bool "PL310 errata: no automatic Store Buffer drain"
1388 depends on CACHE_L2X0
1389 help
1390 On revisions of the PL310 prior to r3p2, the Store Buffer does
1391 not automatically drain. This can cause normal, non-cacheable
1392 writes to be retained when the memory system is idle, leading
1393 to suboptimal I/O performance for drivers using coherent DMA.
1394 This option adds a write barrier to the cpu_idle loop so that,
1395 on systems with an outer cache, the store buffer is drained
1396 explicitly.
1397
1da177e4
LT
1398endmenu
1399
1400source "arch/arm/common/Kconfig"
1401
1da177e4
LT
1402menu "Bus support"
1403
1404config ARM_AMBA
1405 bool
1406
1407config ISA
1408 bool
1da177e4
LT
1409 help
1410 Find out whether you have ISA slots on your motherboard. ISA is the
1411 name of a bus system, i.e. the way the CPU talks to the other stuff
1412 inside your box. Other bus systems are PCI, EISA, MicroChannel
1413 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1414 newer boards don't support it. If you have ISA, say Y, otherwise N.
1415
065909b9 1416# Select ISA DMA controller support
1da177e4
LT
1417config ISA_DMA
1418 bool
065909b9 1419 select ISA_DMA_API
1da177e4 1420
065909b9 1421# Select ISA DMA interface
5cae841b
AV
1422config ISA_DMA_API
1423 bool
5cae841b 1424
1da177e4 1425config PCI
0b05da72 1426 bool "PCI support" if MIGHT_HAVE_PCI
1da177e4
LT
1427 help
1428 Find out whether you have a PCI motherboard. PCI is the name of a
1429 bus system, i.e. the way the CPU talks to the other stuff inside
1430 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1431 VESA. If you have PCI, say Y, otherwise N.
1432
52882173
AV
1433config PCI_DOMAINS
1434 bool
1435 depends on PCI
1436
b080ac8a
MRJ
1437config PCI_NANOENGINE
1438 bool "BSE nanoEngine PCI support"
1439 depends on SA1100_NANOENGINE
1440 help
1441 Enable PCI on the BSE nanoEngine board.
1442
36e23590
MW
1443config PCI_SYSCALL
1444 def_bool PCI
1445
1da177e4
LT
1446# Select the host bridge type
1447config PCI_HOST_VIA82C505
1448 bool
1449 depends on PCI && ARCH_SHARK
1450 default y
1451
a0113a99
MR
1452config PCI_HOST_ITE8152
1453 bool
1454 depends on PCI && MACH_ARMCORE
1455 default y
1456 select DMABOUNCE
1457
1da177e4
LT
1458source "drivers/pci/Kconfig"
1459
1460source "drivers/pcmcia/Kconfig"
1461
1462endmenu
1463
1464menu "Kernel Features"
1465
0567a0c0
KH
1466source "kernel/time/Kconfig"
1467
3b55658a
DM
1468config HAVE_SMP
1469 bool
1470 help
1471 This option should be selected by machines which have an SMP-
1472 capable CPU.
1473
1474 The only effect of this option is to make the SMP-related
1475 options available to the user for configuration.
1476
1da177e4 1477config SMP
bb2d8130 1478 bool "Symmetric Multi-Processing"
fbb4ddac 1479 depends on CPU_V6K || CPU_V7
bc28248e 1480 depends on GENERIC_CLOCKEVENTS
3b55658a 1481 depends on HAVE_SMP
9934ebb8 1482 depends on MMU
f6dd9fa5 1483 select USE_GENERIC_SMP_HELPERS
89c3dedf 1484 select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1da177e4
LT
1485 help
1486 This enables support for systems with more than one CPU. If you have
1487 a system with only one CPU, like most personal computers, say N. If
1488 you have a system with more than one CPU, say Y.
1489
1490 If you say N here, the kernel will run on single and multiprocessor
1491 machines, but will use only one CPU of a multiprocessor machine. If
1492 you say Y here, the kernel will run on many, but not all, single
1493 processor machines. On a single processor machine, the kernel will
1494 run faster if you say N here.
1495
395cf969 1496 See also <file:Documentation/x86/i386/IO-APIC.txt>,
1da177e4 1497 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
50a23e6e 1498 <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1da177e4
LT
1499
1500 If you don't know what to do here, say N.
1501
f00ec48f
RK
1502config SMP_ON_UP
1503 bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1504 depends on EXPERIMENTAL
4d2692a7 1505 depends on SMP && !XIP_KERNEL
f00ec48f
RK
1506 default y
1507 help
1508 SMP kernels contain instructions which fail on non-SMP processors.
1509 Enabling this option allows the kernel to modify itself to make
1510 these instructions safe. Disabling it allows about 1K of space
1511 savings.
1512
1513 If you don't know what to do here, say Y.
1514
c9018aab
VG
1515config ARM_CPU_TOPOLOGY
1516 bool "Support cpu topology definition"
1517 depends on SMP && CPU_V7
1518 default y
1519 help
1520 Support ARM cpu topology definition. The MPIDR register defines
1521 affinity between processors which is then used to describe the cpu
1522 topology of an ARM System.
1523
1524config SCHED_MC
1525 bool "Multi-core scheduler support"
1526 depends on ARM_CPU_TOPOLOGY
1527 help
1528 Multi-core scheduler support improves the CPU scheduler's decision
1529 making when dealing with multi-core CPU chips at a cost of slightly
1530 increased overhead in some places. If unsure say N here.
1531
1532config SCHED_SMT
1533 bool "SMT scheduler support"
1534 depends on ARM_CPU_TOPOLOGY
1535 help
1536 Improves the CPU scheduler's decision making when dealing with
1537 MultiThreading at a cost of slightly increased overhead in some
1538 places. If unsure say N here.
1539
a8cbcd92
RK
1540config HAVE_ARM_SCU
1541 bool
a8cbcd92
RK
1542 help
1543 This option enables support for the ARM system coherency unit
1544
f32f4ce2
RK
1545config HAVE_ARM_TWD
1546 bool
1547 depends on SMP
15095bb0 1548 select TICK_ONESHOT
f32f4ce2
RK
1549 help
1550 This options enables support for the ARM timer and watchdog unit
1551
8d5796d2
LB
1552choice
1553 prompt "Memory split"
1554 default VMSPLIT_3G
1555 help
1556 Select the desired split between kernel and user memory.
1557
1558 If you are not absolutely sure what you are doing, leave this
1559 option alone!
1560
1561 config VMSPLIT_3G
1562 bool "3G/1G user/kernel split"
1563 config VMSPLIT_2G
1564 bool "2G/2G user/kernel split"
1565 config VMSPLIT_1G
1566 bool "1G/3G user/kernel split"
1567endchoice
1568
1569config PAGE_OFFSET
1570 hex
1571 default 0x40000000 if VMSPLIT_1G
1572 default 0x80000000 if VMSPLIT_2G
1573 default 0xC0000000
1574
1da177e4
LT
1575config NR_CPUS
1576 int "Maximum number of CPUs (2-32)"
1577 range 2 32
1578 depends on SMP
1579 default "4"
1580
a054a811
RK
1581config HOTPLUG_CPU
1582 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1583 depends on SMP && HOTPLUG && EXPERIMENTAL
1584 help
1585 Say Y here to experiment with turning CPUs off and on. CPUs
1586 can be controlled through /sys/devices/system/cpu.
1587
37ee16ae
RK
1588config LOCAL_TIMERS
1589 bool "Use local timer interrupts"
971acb9b 1590 depends on SMP
37ee16ae 1591 default y
30d8bead 1592 select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
37ee16ae
RK
1593 help
1594 Enable support for local timers on SMP platforms, rather then the
1595 legacy IPI broadcast method. Local timers allows the system
1596 accounting to be spread across the timer interval, preventing a
1597 "thundering herd" at every timer tick.
1598
44986ab0
PDSN
1599config ARCH_NR_GPIO
1600 int
3dea19e8 1601 default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
70227a45 1602 default 355 if ARCH_U8500
9a01ec30 1603 default 264 if MACH_H4700
44986ab0
PDSN
1604 default 0
1605 help
1606 Maximum number of GPIOs in the system.
1607
1608 If unsure, leave the default value.
1609
d45a398f 1610source kernel/Kconfig.preempt
1da177e4 1611
f8065813
RK
1612config HZ
1613 int
b130d5c2 1614 default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
a73ddc61 1615 ARCH_S5PV210 || ARCH_EXYNOS4
bfe65704 1616 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 1617 default AT91_TIMER_HZ if ARCH_AT91
5da3e714 1618 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
f8065813
RK
1619 default 100
1620
16c79651 1621config THUMB2_KERNEL
4a50bfe3 1622 bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
e399b1a4 1623 depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
16c79651
CM
1624 select AEABI
1625 select ARM_ASM_UNIFIED
89bace65 1626 select ARM_UNWIND
16c79651
CM
1627 help
1628 By enabling this option, the kernel will be compiled in
1629 Thumb-2 mode. A compiler/assembler that understand the unified
1630 ARM-Thumb syntax is needed.
1631
1632 If unsure, say N.
1633
6f685c5c
DM
1634config THUMB2_AVOID_R_ARM_THM_JUMP11
1635 bool "Work around buggy Thumb-2 short branch relocations in gas"
1636 depends on THUMB2_KERNEL && MODULES
1637 default y
1638 help
1639 Various binutils versions can resolve Thumb-2 branches to
1640 locally-defined, preemptible global symbols as short-range "b.n"
1641 branch instructions.
1642
1643 This is a problem, because there's no guarantee the final
1644 destination of the symbol, or any candidate locations for a
1645 trampoline, are within range of the branch. For this reason, the
1646 kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1647 relocation in modules at all, and it makes little sense to add
1648 support.
1649
1650 The symptom is that the kernel fails with an "unsupported
1651 relocation" error when loading some modules.
1652
1653 Until fixed tools are available, passing
1654 -fno-optimize-sibling-calls to gcc should prevent gcc generating
1655 code which hits this problem, at the cost of a bit of extra runtime
1656 stack usage in some cases.
1657
1658 The problem is described in more detail at:
1659 https://bugs.launchpad.net/binutils-linaro/+bug/725126
1660
1661 Only Thumb-2 kernels are affected.
1662
1663 Unless you are sure your tools don't have this problem, say Y.
1664
0becb088
CM
1665config ARM_ASM_UNIFIED
1666 bool
1667
704bdda0
NP
1668config AEABI
1669 bool "Use the ARM EABI to compile the kernel"
1670 help
1671 This option allows for the kernel to be compiled using the latest
1672 ARM ABI (aka EABI). This is only useful if you are using a user
1673 space environment that is also compiled with EABI.
1674
1675 Since there are major incompatibilities between the legacy ABI and
1676 EABI, especially with regard to structure member alignment, this
1677 option also changes the kernel syscall calling convention to
1678 disambiguate both ABIs and allow for backward compatibility support
1679 (selected with CONFIG_OABI_COMPAT).
1680
1681 To use this you need GCC version 4.0.0 or later.
1682
6c90c872 1683config OABI_COMPAT
a73a3ff1 1684 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
9bc433a1 1685 depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
6c90c872
NP
1686 default y
1687 help
1688 This option preserves the old syscall interface along with the
1689 new (ARM EABI) one. It also provides a compatibility layer to
1690 intercept syscalls that have structure arguments which layout
1691 in memory differs between the legacy ABI and the new ARM EABI
1692 (only for non "thumb" binaries). This option adds a tiny
1693 overhead to all syscalls and produces a slightly larger kernel.
1694 If you know you'll be using only pure EABI user space then you
1695 can say N here. If this option is not selected and you attempt
1696 to execute a legacy ABI binary then the result will be
1697 UNPREDICTABLE (in fact it can be predicted that it won't work
1698 at all). If in doubt say Y.
1699
eb33575c 1700config ARCH_HAS_HOLES_MEMORYMODEL
e80d6a24 1701 bool
e80d6a24 1702
05944d74
RK
1703config ARCH_SPARSEMEM_ENABLE
1704 bool
1705
07a2f737
RK
1706config ARCH_SPARSEMEM_DEFAULT
1707 def_bool ARCH_SPARSEMEM_ENABLE
1708
05944d74 1709config ARCH_SELECT_MEMORY_MODEL
be370302 1710 def_bool ARCH_SPARSEMEM_ENABLE
c80d79d7 1711
7b7bf499
WD
1712config HAVE_ARCH_PFN_VALID
1713 def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
1714
053a96ca 1715config HIGHMEM
e8db89a2
RK
1716 bool "High Memory Support"
1717 depends on MMU
053a96ca
NP
1718 help
1719 The address space of ARM processors is only 4 Gigabytes large
1720 and it has to accommodate user address space, kernel address
1721 space as well as some memory mapped IO. That means that, if you
1722 have a large amount of physical memory and/or IO, not all of the
1723 memory can be "permanently mapped" by the kernel. The physical
1724 memory that is not permanently mapped is called "high memory".
1725
1726 Depending on the selected kernel/user memory split, minimum
1727 vmalloc space and actual amount of RAM, you may not need this
1728 option which should result in a slightly faster kernel.
1729
1730 If unsure, say n.
1731
65cec8e3
RK
1732config HIGHPTE
1733 bool "Allocate 2nd-level pagetables from highmem"
1734 depends on HIGHMEM
65cec8e3 1735
1b8873a0
JI
1736config HW_PERF_EVENTS
1737 bool "Enable hardware performance counter support for perf events"
fe166148 1738 depends on PERF_EVENTS && CPU_HAS_PMU
1b8873a0
JI
1739 default y
1740 help
1741 Enable hardware performance counter support for perf events. If
1742 disabled, perf events will use software events only.
1743
3f22ab27
DH
1744source "mm/Kconfig"
1745
c1b2d970
MD
1746config FORCE_MAX_ZONEORDER
1747 int "Maximum zone order" if ARCH_SHMOBILE
1748 range 11 64 if ARCH_SHMOBILE
1749 default "9" if SA1111
1750 default "11"
1751 help
1752 The kernel memory allocator divides physically contiguous memory
1753 blocks into "zones", where each zone is a power of two number of
1754 pages. This option selects the largest power of two that the kernel
1755 keeps in the memory allocator. If you need to allocate very large
1756 blocks of physically contiguous memory, then you may need to
1757 increase this value.
1758
1759 This config option is actually maximum order plus one. For example,
1760 a value of 11 means that the largest free memory block is 2^10 pages.
1761
1da177e4
LT
1762config LEDS
1763 bool "Timer and CPU usage LEDs"
e055d5bf 1764 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
8c8fdbc9 1765 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1da177e4
LT
1766 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1767 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 1768 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
25329671 1769 ARCH_AT91 || ARCH_DAVINCI || \
ff3042fb 1770 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1da177e4
LT
1771 help
1772 If you say Y here, the LEDs on your machine will be used
1773 to provide useful information about your current system status.
1774
1775 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1776 be able to select which LEDs are active using the options below. If
1777 you are compiling a kernel for the EBSA-110 or the LART however, the
1778 red LED will simply flash regularly to indicate that the system is
1779 still functional. It is safe to say Y here if you have a CATS
1780 system, but the driver will do nothing.
1781
1782config LEDS_TIMER
1783 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
1784 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1785 || MACH_OMAP_PERSEUS2
1da177e4 1786 depends on LEDS
0567a0c0 1787 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
1788 default y if ARCH_EBSA110
1789 help
1790 If you say Y here, one of the system LEDs (the green one on the
1791 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1792 will flash regularly to indicate that the system is still
1793 operational. This is mainly useful to kernel hackers who are
1794 debugging unstable kernels.
1795
1796 The LART uses the same LED for both Timer LED and CPU usage LED
1797 functions. You may choose to use both, but the Timer LED function
1798 will overrule the CPU usage LED.
1799
1800config LEDS_CPU
1801 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
1802 !ARCH_OMAP) \
1803 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1804 || MACH_OMAP_PERSEUS2
1da177e4
LT
1805 depends on LEDS
1806 help
1807 If you say Y here, the red LED will be used to give a good real
1808 time indication of CPU usage, by lighting whenever the idle task
1809 is not currently executing.
1810
1811 The LART uses the same LED for both Timer LED and CPU usage LED
1812 functions. You may choose to use both, but the Timer LED function
1813 will overrule the CPU usage LED.
1814
1815config ALIGNMENT_TRAP
1816 bool
f12d0d7c 1817 depends on CPU_CP15_MMU
1da177e4 1818 default y if !ARCH_EBSA110
e119bfff 1819 select HAVE_PROC_CPU if PROC_FS
1da177e4 1820 help
84eb8d06 1821 ARM processors cannot fetch/store information which is not
1da177e4
LT
1822 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1823 address divisible by 4. On 32-bit ARM processors, these non-aligned
1824 fetch/store instructions will be emulated in software if you say
1825 here, which has a severe performance impact. This is necessary for
1826 correct operation of some network protocols. With an IP-only
1827 configuration it is safe to say N, otherwise say Y.
1828
39ec58f3
LB
1829config UACCESS_WITH_MEMCPY
1830 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1831 depends on MMU && EXPERIMENTAL
1832 default y if CPU_FEROCEON
1833 help
1834 Implement faster copy_to_user and clear_user methods for CPU
1835 cores where a 8-word STM instruction give significantly higher
1836 memory write throughput than a sequence of individual 32bit stores.
1837
1838 A possible side effect is a slight increase in scheduling latency
1839 between threads sharing the same address space if they invoke
1840 such copy operations with large buffers.
1841
1842 However, if the CPU data cache is using a write-allocate mode,
1843 this option is unlikely to provide any performance gain.
1844
70c70d97
NP
1845config SECCOMP
1846 bool
1847 prompt "Enable seccomp to safely compute untrusted bytecode"
1848 ---help---
1849 This kernel feature is useful for number crunching applications
1850 that may need to compute untrusted bytecode during their
1851 execution. By using pipes or other transports made available to
1852 the process as file descriptors supporting the read/write
1853 syscalls, it's possible to isolate those applications in
1854 their own address space using seccomp. Once seccomp is
1855 enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1856 and the task is only allowed to execute a few safe syscalls
1857 defined by each seccomp mode.
1858
c743f380
NP
1859config CC_STACKPROTECTOR
1860 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
4a50bfe3 1861 depends on EXPERIMENTAL
c743f380
NP
1862 help
1863 This option turns on the -fstack-protector GCC feature. This
1864 feature puts, at the beginning of functions, a canary value on
1865 the stack just before the return address, and validates
1866 the value just before actually returning. Stack based buffer
1867 overflows (that need to overwrite this return address) now also
1868 overwrite the canary, which gets detected and the attack is then
1869 neutralized via a kernel panic.
1870 This feature requires gcc version 4.2 or above.
1871
73a65b3f
UKK
1872config DEPRECATED_PARAM_STRUCT
1873 bool "Provide old way to pass kernel parameters"
1874 help
1875 This was deprecated in 2001 and announced to live on for 5 years.
1876 Some old boot loaders still use this way.
1877
1da177e4
LT
1878endmenu
1879
1880menu "Boot options"
1881
9eb8f674
GL
1882config USE_OF
1883 bool "Flattened Device Tree support"
1884 select OF
1885 select OF_EARLY_FLATTREE
08a543ad 1886 select IRQ_DOMAIN
9eb8f674
GL
1887 help
1888 Include support for flattened device tree machine descriptions.
1889
1da177e4
LT
1890# Compressed boot loader in ROM. Yes, we really want to ask about
1891# TEXT and BSS so we preserve their values in the config files.
1892config ZBOOT_ROM_TEXT
1893 hex "Compressed ROM boot loader base address"
1894 default "0"
1895 help
1896 The physical address at which the ROM-able zImage is to be
1897 placed in the target. Platforms which normally make use of
1898 ROM-able zImage formats normally set this to a suitable
1899 value in their defconfig file.
1900
1901 If ZBOOT_ROM is not enabled, this has no effect.
1902
1903config ZBOOT_ROM_BSS
1904 hex "Compressed ROM boot loader BSS address"
1905 default "0"
1906 help
f8c440b2
DF
1907 The base address of an area of read/write memory in the target
1908 for the ROM-able zImage which must be available while the
1909 decompressor is running. It must be large enough to hold the
1910 entire decompressed kernel plus an additional 128 KiB.
1911 Platforms which normally make use of ROM-able zImage formats
1912 normally set this to a suitable value in their defconfig file.
1da177e4
LT
1913
1914 If ZBOOT_ROM is not enabled, this has no effect.
1915
1916config ZBOOT_ROM
1917 bool "Compressed boot loader in ROM/flash"
1918 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1919 help
1920 Say Y here if you intend to execute your compressed kernel image
1921 (zImage) directly from ROM or flash. If unsure, say N.
1922
090ab3ff
SH
1923choice
1924 prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
1925 depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1926 default ZBOOT_ROM_NONE
1927 help
1928 Include experimental SD/MMC loading code in the ROM-able zImage.
1929 With this enabled it is possible to write the the ROM-able zImage
1930 kernel image to an MMC or SD card and boot the kernel straight
1931 from the reset vector. At reset the processor Mask ROM will load
1932 the first part of the the ROM-able zImage which in turn loads the
1933 rest the kernel image to RAM.
1934
1935config ZBOOT_ROM_NONE
1936 bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1937 help
1938 Do not load image from SD or MMC
1939
f45b1149
SH
1940config ZBOOT_ROM_MMCIF
1941 bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
f45b1149 1942 help
090ab3ff
SH
1943 Load image from MMCIF hardware block.
1944
1945config ZBOOT_ROM_SH_MOBILE_SDHI
1946 bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1947 help
1948 Load image from SDHI hardware block
1949
1950endchoice
f45b1149 1951
e2a6a3aa
JB
1952config ARM_APPENDED_DTB
1953 bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
1954 depends on OF && !ZBOOT_ROM && EXPERIMENTAL
1955 help
1956 With this option, the boot code will look for a device tree binary
1957 (DTB) appended to zImage
1958 (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1959
1960 This is meant as a backward compatibility convenience for those
1961 systems with a bootloader that can't be upgraded to accommodate
1962 the documented boot protocol using a device tree.
1963
1964 Beware that there is very little in terms of protection against
1965 this option being confused by leftover garbage in memory that might
1966 look like a DTB header after a reboot if no actual DTB is appended
1967 to zImage. Do not leave this option active in a production kernel
1968 if you don't intend to always append a DTB. Proper passing of the
1969 location into r2 of a bootloader provided DTB is always preferable
1970 to this option.
1971
b90b9a38
NP
1972config ARM_ATAG_DTB_COMPAT
1973 bool "Supplement the appended DTB with traditional ATAG information"
1974 depends on ARM_APPENDED_DTB
1975 help
1976 Some old bootloaders can't be updated to a DTB capable one, yet
1977 they provide ATAGs with memory configuration, the ramdisk address,
1978 the kernel cmdline string, etc. Such information is dynamically
1979 provided by the bootloader and can't always be stored in a static
1980 DTB. To allow a device tree enabled kernel to be used with such
1981 bootloaders, this option allows zImage to extract the information
1982 from the ATAG list and store it at run time into the appended DTB.
1983
1da177e4
LT
1984config CMDLINE
1985 string "Default kernel command string"
1986 default ""
1987 help
1988 On some architectures (EBSA110 and CATS), there is currently no way
1989 for the boot loader to pass arguments to the kernel. For these
1990 architectures, you should supply some command-line options at build
1991 time by entering them here. As a minimum, you should specify the
1992 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1993
4394c124
VB
1994choice
1995 prompt "Kernel command line type" if CMDLINE != ""
1996 default CMDLINE_FROM_BOOTLOADER
1997
1998config CMDLINE_FROM_BOOTLOADER
1999 bool "Use bootloader kernel arguments if available"
2000 help
2001 Uses the command-line options passed by the boot loader. If
2002 the boot loader doesn't provide any, the default kernel command
2003 string provided in CMDLINE will be used.
2004
2005config CMDLINE_EXTEND
2006 bool "Extend bootloader kernel arguments"
2007 help
2008 The command-line arguments provided by the boot loader will be
2009 appended to the default kernel command string.
2010
92d2040d
AH
2011config CMDLINE_FORCE
2012 bool "Always use the default kernel command string"
92d2040d
AH
2013 help
2014 Always use the default kernel command string, even if the boot
2015 loader passes other arguments to the kernel.
2016 This is useful if you cannot or don't want to change the
2017 command-line options your boot loader passes to the kernel.
4394c124 2018endchoice
92d2040d 2019
1da177e4
LT
2020config XIP_KERNEL
2021 bool "Kernel Execute-In-Place from ROM"
497b7e94 2022 depends on !ZBOOT_ROM && !ARM_LPAE
1da177e4
LT
2023 help
2024 Execute-In-Place allows the kernel to run from non-volatile storage
2025 directly addressable by the CPU, such as NOR flash. This saves RAM
2026 space since the text section of the kernel is not loaded from flash
2027 to RAM. Read-write sections, such as the data section and stack,
2028 are still copied to RAM. The XIP kernel is not compressed since
2029 it has to run directly from flash, so it will take more space to
2030 store it. The flash address used to link the kernel object files,
2031 and for storing it, is configuration dependent. Therefore, if you
2032 say Y here, you must know the proper physical address where to
2033 store the kernel image depending on your own flash memory usage.
2034
2035 Also note that the make target becomes "make xipImage" rather than
2036 "make zImage" or "make Image". The final kernel binary to put in
2037 ROM memory will be arch/arm/boot/xipImage.
2038
2039 If unsure, say N.
2040
2041config XIP_PHYS_ADDR
2042 hex "XIP Kernel Physical Location"
2043 depends on XIP_KERNEL
2044 default "0x00080000"
2045 help
2046 This is the physical address in your flash memory the kernel will
2047 be linked for and stored to. This address is dependent on your
2048 own flash usage.
2049
c587e4a6
RP
2050config KEXEC
2051 bool "Kexec system call (EXPERIMENTAL)"
02b73e2e 2052 depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
c587e4a6
RP
2053 help
2054 kexec is a system call that implements the ability to shutdown your
2055 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 2056 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
2057 you can start any kernel with it, not just Linux.
2058
2059 It is an ongoing process to be certain the hardware in a machine
2060 is properly shutdown, so do not be surprised if this code does not
2061 initially work for you. It may help to enable device hotplugging
2062 support.
2063
4cd9d6f7
RP
2064config ATAGS_PROC
2065 bool "Export atags in procfs"
b98d7291
UL
2066 depends on KEXEC
2067 default y
4cd9d6f7
RP
2068 help
2069 Should the atags used to boot the kernel be exported in an "atags"
2070 file in procfs. Useful with kexec.
2071
cb5d39b3
MW
2072config CRASH_DUMP
2073 bool "Build kdump crash kernel (EXPERIMENTAL)"
2074 depends on EXPERIMENTAL
2075 help
2076 Generate crash dump after being started by kexec. This should
2077 be normally only set in special crash dump kernels which are
2078 loaded in the main kernel with kexec-tools into a specially
2079 reserved region and then later executed after a crash by
2080 kdump/kexec. The crash dump kernel must be compiled to a
2081 memory address not used by the main kernel
2082
2083 For more details see Documentation/kdump/kdump.txt
2084
e69edc79
EM
2085config AUTO_ZRELADDR
2086 bool "Auto calculation of the decompressed kernel image address"
2087 depends on !ZBOOT_ROM && !ARCH_U300
2088 help
2089 ZRELADDR is the physical address where the decompressed kernel
2090 image will be placed. If AUTO_ZRELADDR is selected, the address
2091 will be determined at run-time by masking the current IP with
2092 0xf8000000. This assumes the zImage being placed in the first 128MB
2093 from start of memory.
2094
1da177e4
LT
2095endmenu
2096
ac9d7efc 2097menu "CPU Power Management"
1da177e4 2098
89c52ed4 2099if ARCH_HAS_CPUFREQ
1da177e4
LT
2100
2101source "drivers/cpufreq/Kconfig"
2102
64f102b6
YS
2103config CPU_FREQ_IMX
2104 tristate "CPUfreq driver for i.MX CPUs"
2105 depends on ARCH_MXC && CPU_FREQ
2106 help
2107 This enables the CPUfreq driver for i.MX CPUs.
2108
1da177e4
LT
2109config CPU_FREQ_SA1100
2110 bool
1da177e4
LT
2111
2112config CPU_FREQ_SA1110
2113 bool
1da177e4
LT
2114
2115config CPU_FREQ_INTEGRATOR
2116 tristate "CPUfreq driver for ARM Integrator CPUs"
2117 depends on ARCH_INTEGRATOR && CPU_FREQ
2118 default y
2119 help
2120 This enables the CPUfreq driver for ARM Integrator CPUs.
2121
2122 For details, take a look at <file:Documentation/cpu-freq>.
2123
2124 If in doubt, say Y.
2125
9e2697ff
RK
2126config CPU_FREQ_PXA
2127 bool
2128 depends on CPU_FREQ && ARCH_PXA && PXA25x
2129 default y
ca7d156e 2130 select CPU_FREQ_TABLE
9e2697ff
RK
2131 select CPU_FREQ_DEFAULT_GOV_USERSPACE
2132
9d56c02a
BD
2133config CPU_FREQ_S3C
2134 bool
2135 help
2136 Internal configuration node for common cpufreq on Samsung SoC
2137
2138config CPU_FREQ_S3C24XX
4a50bfe3 2139 bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
b130d5c2 2140 depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
9d56c02a
BD
2141 select CPU_FREQ_S3C
2142 help
2143 This enables the CPUfreq driver for the Samsung S3C24XX family
2144 of CPUs.
2145
2146 For details, take a look at <file:Documentation/cpu-freq>.
2147
2148 If in doubt, say N.
2149
2150config CPU_FREQ_S3C24XX_PLL
4a50bfe3 2151 bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
9d56c02a
BD
2152 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
2153 help
2154 Compile in support for changing the PLL frequency from the
2155 S3C24XX series CPUfreq driver. The PLL takes time to settle
2156 after a frequency change, so by default it is not enabled.
2157
2158 This also means that the PLL tables for the selected CPU(s) will
2159 be built which may increase the size of the kernel image.
2160
2161config CPU_FREQ_S3C24XX_DEBUG
2162 bool "Debug CPUfreq Samsung driver core"
2163 depends on CPU_FREQ_S3C24XX
2164 help
2165 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
2166
2167config CPU_FREQ_S3C24XX_IODEBUG
2168 bool "Debug CPUfreq Samsung driver IO timing"
2169 depends on CPU_FREQ_S3C24XX
2170 help
2171 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
2172
e6d197a6
BD
2173config CPU_FREQ_S3C24XX_DEBUGFS
2174 bool "Export debugfs for CPUFreq"
2175 depends on CPU_FREQ_S3C24XX && DEBUG_FS
2176 help
2177 Export status information via debugfs.
2178
1da177e4
LT
2179endif
2180
ac9d7efc
RK
2181source "drivers/cpuidle/Kconfig"
2182
2183endmenu
2184
1da177e4
LT
2185menu "Floating point emulation"
2186
2187comment "At least one emulation must be selected"
2188
2189config FPE_NWFPE
2190 bool "NWFPE math emulation"
593c252a 2191 depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1da177e4
LT
2192 ---help---
2193 Say Y to include the NWFPE floating point emulator in the kernel.
2194 This is necessary to run most binaries. Linux does not currently
2195 support floating point hardware so you need to say Y here even if
2196 your machine has an FPA or floating point co-processor podule.
2197
2198 You may say N here if you are going to load the Acorn FPEmulator
2199 early in the bootup.
2200
2201config FPE_NWFPE_XP
2202 bool "Support extended precision"
bedf142b 2203 depends on FPE_NWFPE
1da177e4
LT
2204 help
2205 Say Y to include 80-bit support in the kernel floating-point
2206 emulator. Otherwise, only 32 and 64-bit support is compiled in.
2207 Note that gcc does not generate 80-bit operations by default,
2208 so in most cases this option only enlarges the size of the
2209 floating point emulator without any good reason.
2210
2211 You almost surely want to say N here.
2212
2213config FPE_FASTFPE
2214 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 2215 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
2216 ---help---
2217 Say Y here to include the FAST floating point emulator in the kernel.
2218 This is an experimental much faster emulator which now also has full
2219 precision for the mantissa. It does not support any exceptions.
2220 It is very simple, and approximately 3-6 times faster than NWFPE.
2221
2222 It should be sufficient for most programs. It may be not suitable
2223 for scientific calculations, but you have to check this for yourself.
2224 If you do not feel you need a faster FP emulation you should better
2225 choose NWFPE.
2226
2227config VFP
2228 bool "VFP-format floating point maths"
e399b1a4 2229 depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
2230 help
2231 Say Y to include VFP support code in the kernel. This is needed
2232 if your hardware includes a VFP unit.
2233
2234 Please see <file:Documentation/arm/VFP/release-notes.txt> for
2235 release notes and additional status information.
2236
2237 Say N if your target does not have VFP hardware.
2238
25ebee02
CM
2239config VFPv3
2240 bool
2241 depends on VFP
2242 default y if CPU_V7
2243
b5872db4
CM
2244config NEON
2245 bool "Advanced SIMD (NEON) Extension support"
2246 depends on VFPv3 && CPU_V7
2247 help
2248 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2249 Extension.
2250
1da177e4
LT
2251endmenu
2252
2253menu "Userspace binary formats"
2254
2255source "fs/Kconfig.binfmt"
2256
2257config ARTHUR
2258 tristate "RISC OS personality"
704bdda0 2259 depends on !AEABI
1da177e4
LT
2260 help
2261 Say Y here to include the kernel code necessary if you want to run
2262 Acorn RISC OS/Arthur binaries under Linux. This code is still very
2263 experimental; if this sounds frightening, say N and sleep in peace.
2264 You can also say M here to compile this support as a module (which
2265 will be called arthur).
2266
2267endmenu
2268
2269menu "Power management options"
2270
eceab4ac 2271source "kernel/power/Kconfig"
1da177e4 2272
f4cb5700 2273config ARCH_SUSPEND_POSSIBLE
6b6844dd 2274 depends on !ARCH_S5PC100
6a786182
RK
2275 depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
2276 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
f4cb5700
JB
2277 def_bool y
2278
15e0d9e3
AB
2279config ARM_CPU_SUSPEND
2280 def_bool PM_SLEEP
2281
1da177e4
LT
2282endmenu
2283
d5950b43
SR
2284source "net/Kconfig"
2285
ac25150f 2286source "drivers/Kconfig"
1da177e4
LT
2287
2288source "fs/Kconfig"
2289
1da177e4
LT
2290source "arch/arm/Kconfig.debug"
2291
2292source "security/Kconfig"
2293
2294source "crypto/Kconfig"
2295
2296source "lib/Kconfig"