Kconfig 64.3 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3
config ARM
	bool
	default y
4
	select ARCH_HAVE_CUSTOM_GPIO_H
5
	select HAVE_AOUT
6
	select HAVE_DMA_API_DEBUG
7
	select HAVE_IDE if PCI || ISA || PCMCIA
8
	select HAVE_DMA_ATTRS
9
	select HAVE_DMA_CONTIGUOUS if MMU
R
Russell King 已提交
10
	select HAVE_MEMBLOCK
11
	select RTC_LIB
12
	select SYS_SUPPORTS_APM_EMULATION
13
	select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
14
	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
15
	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
16
	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
J
Jason Wessel 已提交
17
	select HAVE_ARCH_KGDB
18
	select HAVE_ARCH_TRACEHOOK
19
	select HAVE_KPROBES if !XIP_KERNEL
20
	select HAVE_KRETPROBES if (HAVE_KPROBES)
21
	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
22 23
	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
24
	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
25
	select ARCH_BINFMT_ELF_RANDOMIZE_PIE
26
	select HAVE_GENERIC_DMA_COHERENT
27 28
	select HAVE_KERNEL_GZIP
	select HAVE_KERNEL_LZO
29
	select HAVE_KERNEL_LZMA
30
	select HAVE_KERNEL_XZ
31
	select HAVE_IRQ_WORK
32 33
	select HAVE_PERF_EVENTS
	select PERF_USE_VMALLOC
34
	select HAVE_REGS_AND_STACK_ACCESS_API
35
	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
36
	select HAVE_C_RECORDMCOUNT
37
	select HAVE_GENERIC_HARDIRQS
38 39
	select HARDIRQS_SW_RESEND
	select GENERIC_IRQ_PROBE
40
	select GENERIC_IRQ_SHOW
41
	select ARCH_WANT_IPC_PARSE_VERSION
42
	select HARDIRQS_SW_RESEND
43
	select CPU_PM if (SUSPEND || CPU_IDLE)
44
	select GENERIC_PCI_IOMAP
45
	select HAVE_BPF_JIT
46
	select GENERIC_SMP_IDLE_THREAD
47 48
	select KTIME_SCALAR
	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
49 50
	select GENERIC_STRNCPY_FROM_USER
	select GENERIC_STRNLEN_USER
51
	select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN
L
Linus Torvalds 已提交
52 53
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
54
	  licensed by ARM Ltd and targeted at embedded applications and
L
Linus Torvalds 已提交
55
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
56
	  manufactured, but legacy ARM-based PC hardware remains popular in
L
Linus Torvalds 已提交
57 58 59
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

60 61 62
config ARM_HAS_SG_CHAIN
	bool

63 64 65 66 67 68 69 70
config NEED_SG_DMA_LENGTH
	bool

config ARM_DMA_USE_IOMMU
	select NEED_SG_DMA_LENGTH
	select ARM_HAS_SG_CHAIN
	bool

R
Russell King 已提交
71 72 73
config HAVE_PWM
	bool

74 75 76
config MIGHT_HAVE_PCI
	bool

77 78 79
config SYS_SUPPORTS_APM_EMULATION
	bool

D
David Brownell 已提交
80 81 82
config GENERIC_GPIO
	bool

83 84 85 86
config HAVE_TCM
	bool
	select GENERIC_ALLOCATOR

87 88 89
config HAVE_PROC_CPU
	bool

A
Al Viro 已提交
90 91 92
config NO_IOPORT
	bool

L
Linus Torvalds 已提交
93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
config EISA
	bool
	---help---
	  The Extended Industry Standard Architecture (EISA) bus was
	  developed as an open alternative to the IBM MicroChannel bus.

	  The EISA bus provided some of the features of the IBM MicroChannel
	  bus while maintaining backward compatibility with cards made for
	  the older ISA bus.  The EISA bus saw limited use between 1988 and
	  1995 when it was made obsolete by the PCI bus.

	  Say Y here if you are building a kernel for an EISA-based machine.

	  Otherwise, say N.

config SBUS
	bool

111 112 113 114
config STACKTRACE_SUPPORT
	bool
	default y

N
Nicolas Pitre 已提交
115 116 117 118 119
config HAVE_LATENCYTOP_SUPPORT
	bool
	depends on !SMP
	default y

120 121 122 123
config LOCKDEP_SUPPORT
	bool
	default y

R
Russell King 已提交
124 125 126 127
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

L
Linus Torvalds 已提交
128 129 130 131 132 133 134
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

135 136 137 138 139 140
config ARCH_HAS_ILOG2_U32
	bool

config ARCH_HAS_ILOG2_U64
	bool

141 142 143 144 145 146 147
config ARCH_HAS_CPUFREQ
	bool
	help
	  Internal node to signify that the ARCH has CPUFREQ support
	  and that the relevant menu configurations are displayed for
	  it.

148 149 150 151
config GENERIC_HWEIGHT
	bool
	default y

L
Linus Torvalds 已提交
152 153 154 155
config GENERIC_CALIBRATE_DELAY
	bool
	default y

156 157 158
config ARCH_MAY_HAVE_PC_FDC
	bool

159 160 161
config ZONE_DMA
	bool

162 163 164
config NEED_DMA_MAP_STATE
       def_bool y

165 166 167
config ARCH_HAS_DMA_SET_COHERENT_MASK
	bool

L
Linus Torvalds 已提交
168 169 170 171 172 173
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

174 175 176
config NEED_RET_TO_USER
	bool

177 178 179
config ARCH_MTD_XIP
	bool

180 181
config VECTORS_BASE
	hex
182
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
183 184 185 186 187
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

188
config ARM_PATCH_PHYS_VIRT
189 190
	bool "Patch physical to virtual translations at runtime" if EMBEDDED
	default y
N
Nicolas Pitre 已提交
191
	depends on !XIP_KERNEL && MMU
192 193
	depends on !ARCH_REALVIEW || !SPARSEMEM
	help
194 195 196
	  Patch phys-to-virt and virt-to-phys translation functions at
	  boot and module load time according to the position of the
	  kernel in system memory.
197

198
	  This can only be used with non-XIP MMU kernels where the base
199
	  of physical memory is at a 16MB boundary.
200

201 202 203
	  Only disable this option if you know that you do not require
	  this feature (eg, building a kernel for a single machine) and
	  you need to shrink the kernel to the minimal size.
204

205 206 207 208 209 210 211
config NEED_MACH_GPIO_H
	bool
	help
	  Select this when mach/gpio.h is required to provide special
	  definitions for this platform. The need for mach/gpio.h should
	  be avoided when possible.

212 213 214 215 216 217 218
config NEED_MACH_IO_H
	bool
	help
	  Select this when mach/io.h is required to provide special
	  definitions for this platform.  The need for mach/io.h should
	  be avoided when possible.

219
config NEED_MACH_MEMORY_H
220 221
	bool
	help
222 223 224
	  Select this when mach/memory.h is required to provide special
	  definitions for this platform.  The need for mach/memory.h should
	  be avoided when possible.
225

226
config PHYS_OFFSET
227
	hex "Physical address of main memory" if MMU
228
	depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
229
	default DRAM_BASE if !MMU
230
	help
231 232
	  Please provide the physical address corresponding to the
	  location of main memory in your system.
233

234 235 236 237
config GENERIC_BUG
	def_bool y
	depends on BUG

L
Linus Torvalds 已提交
238 239
source "init/Kconfig"

240 241
source "kernel/Kconfig.freezer"

L
Linus Torvalds 已提交
242 243
menu "System Type"

244 245 246 247 248 249 250
config MMU
	bool "MMU-based Paged Memory Management Support"
	default y
	help
	  Select if you want MMU-based virtualised addressing space
	  support by paged memory management. If unsure, say 'Y'.

251 252 253 254
#
# The "ARM system type" choice list is ordered alphabetically by option
# text.  Please add new entries in the option alphabetic order.
#
L
Linus Torvalds 已提交
255 256
choice
	prompt "ARM system type"
R
Rob Herring 已提交
257
	default ARCH_MULTIPLATFORM
L
Linus Torvalds 已提交
258

R
Rob Herring 已提交
259 260 261 262
config ARCH_MULTIPLATFORM
	bool "Allow multiple platforms to be selected"
	select ARM_PATCH_PHYS_VIRT
	select AUTO_ZRELADDR
263
	select COMMON_CLK
R
Rob Herring 已提交
264
	select MULTI_IRQ_HANDLER
265 266
	select SPARSE_IRQ
	select USE_OF
R
Rob Herring 已提交
267
	depends on MMU
268

269 270 271
config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
272
	select ARCH_HAS_CPUFREQ
273
	select COMMON_CLK
274
	select COMMON_CLK_VERSATILE
275
	select HAVE_TCM
276
	select ICST
277
	select GENERIC_CLOCKEVENTS
278
	select PLAT_VERSATILE
279
	select PLAT_VERSATILE_FPGA_IRQ
280
	select NEED_MACH_MEMORY_H
281
	select SPARSE_IRQ
282
	select MULTI_IRQ_HANDLER
283 284 285 286 287 288
	help
	  Support for ARM's Integrator platform.

config ARCH_REALVIEW
	bool "ARM Ltd. RealView family"
	select ARM_AMBA
289 290
	select COMMON_CLK
	select COMMON_CLK_VERSATILE
291
	select ICST
292
	select GENERIC_CLOCKEVENTS
293
	select ARCH_WANT_OPTIONAL_GPIOLIB
294
	select PLAT_VERSATILE
295
	select PLAT_VERSATILE_CLCD
296
	select ARM_TIMER_SP804
297
	select GPIO_PL061 if GPIOLIB
298
	select NEED_MACH_MEMORY_H
299 300 301 302 303 304 305
	help
	  This enables support for ARM Ltd RealView boards.

config ARCH_VERSATILE
	bool "ARM Ltd. Versatile family"
	select ARM_AMBA
	select ARM_VIC
306
	select CLKDEV_LOOKUP
307
	select HAVE_MACH_CLKDEV
308
	select ICST
309
	select GENERIC_CLOCKEVENTS
310
	select ARCH_WANT_OPTIONAL_GPIOLIB
311
	select PLAT_VERSATILE
312
	select PLAT_VERSATILE_CLOCK
313
	select PLAT_VERSATILE_CLCD
314
	select PLAT_VERSATILE_FPGA_IRQ
315
	select ARM_TIMER_SP804
316 317 318
	help
	  This enables support for ARM Ltd Versatile board.

319 320
config ARCH_AT91
	bool "Atmel AT91"
321
	select ARCH_REQUIRE_GPIOLIB
D
David Brownell 已提交
322
	select HAVE_CLK
323
	select CLKDEV_LOOKUP
324
	select IRQ_DOMAIN
325
	select NEED_MACH_GPIO_H
R
Rob Herring 已提交
326
	select NEED_MACH_IO_H if PCCARD
327
	help
328 329
	  This enables support for systems based on Atmel
	  AT91RM9200 and AT91SAM9* processors.
330

331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347
config ARCH_BCM2835
	bool "Broadcom BCM2835 family"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_ERRATA_411920
	select ARM_TIMER_SP804
	select CLKDEV_LOOKUP
	select COMMON_CLK
	select CPU_V6
	select GENERIC_CLOCKEVENTS
	select MULTI_IRQ_HANDLER
	select SPARSE_IRQ
	select USE_OF
	help
	  This enables support for the Broadcom BCM2835 SoC. This SoC is
	  use in the Raspberry Pi, and Roku 2 devices.

L
Linus Torvalds 已提交
348
config ARCH_CLPS711X
349
	bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
350
	select CPU_ARM720T
351
	select ARCH_USES_GETTIMEOFFSET
352 353
	select COMMON_CLK
	select CLKDEV_LOOKUP
354
	select NEED_MACH_MEMORY_H
355
	help
356
	  Support for Cirrus Logic 711x/721x/731x based boards.
L
Linus Torvalds 已提交
357

358 359
config ARCH_CNS3XXX
	bool "Cavium Networks CNS3XXX family"
I
Imre Kaloz 已提交
360
	select CPU_V6K
361 362
	select GENERIC_CLOCKEVENTS
	select ARM_GIC
363
	select MIGHT_HAVE_CACHE_L2X0
364
	select MIGHT_HAVE_PCI
365
	select PCI_DOMAINS if PCI
366 367 368
	help
	  Support for Cavium Networks CNS3XXX platform.

369 370 371 372
config ARCH_GEMINI
	bool "Cortina Systems Gemini"
	select CPU_FA526
	select ARCH_REQUIRE_GPIOLIB
373
	select ARCH_USES_GETTIMEOFFSET
374 375 376
	help
	  Support for the Cortina Systems Gemini family SoCs

377 378
config ARCH_SIRF
	bool "CSR SiRF"
A
Arnd Bergmann 已提交
379
	select NO_IOPORT
380
	select ARCH_REQUIRE_GPIOLIB
A
Arnd Bergmann 已提交
381
	select GENERIC_CLOCKEVENTS
382
	select COMMON_CLK
A
Arnd Bergmann 已提交
383
	select GENERIC_IRQ_CHIP
384
	select MIGHT_HAVE_CACHE_L2X0
385 386
	select PINCTRL
	select PINCTRL_SIRF
A
Arnd Bergmann 已提交
387 388
	select USE_OF
	help
389
	  Support for CSR SiRFprimaII/Marco/Polo platforms
A
Arnd Bergmann 已提交
390

L
Linus Torvalds 已提交
391 392
config ARCH_EBSA110
	bool "EBSA-110"
393
	select CPU_SA110
394
	select ISA
395
	select NO_IOPORT
396
	select ARCH_USES_GETTIMEOFFSET
397
	select NEED_MACH_IO_H
398
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
399 400
	help
	  This is an evaluation board for the StrongARM processor available
401
	  from Digital. It has limited hardware on-board, including an
L
Linus Torvalds 已提交
402 403 404
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

405 406
config ARCH_EP93XX
	bool "EP93xx-based"
407
	select CPU_ARM920T
408 409
	select ARM_AMBA
	select ARM_VIC
410
	select CLKDEV_LOOKUP
M
Michael Buesch 已提交
411
	select ARCH_REQUIRE_GPIOLIB
412
	select ARCH_HAS_HOLES_MEMORYMODEL
413
	select ARCH_USES_GETTIMEOFFSET
414
	select NEED_MACH_MEMORY_H
415 416 417
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

L
Linus Torvalds 已提交
418 419
config ARCH_FOOTBRIDGE
	bool "FootBridge"
420
	select CPU_SA110
L
Linus Torvalds 已提交
421
	select FOOTBRIDGE
422
	select GENERIC_CLOCKEVENTS
423
	select HAVE_IDE
424
	select NEED_MACH_IO_H if !MMU
425
	select NEED_MACH_MEMORY_H
426 427 428
	help
	  Support for systems based on the DC21285 companion chip
	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
L
Linus Torvalds 已提交
429

430 431 432 433
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
434
	select CLKDEV_LOOKUP
435
	select CLKSRC_MMIO
436
	select GENERIC_IRQ_CHIP
437
	select MULTI_IRQ_HANDLER
438
	select SPARSE_IRQ
U
Uwe Kleine-König 已提交
439
	select USE_OF
440 441 442
	help
	  Support for Freescale MXC/iMX-based family of processors

443 444 445 446
config ARCH_MXS
	bool "Freescale MXS-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
447
	select CLKDEV_LOOKUP
448
	select CLKSRC_MMIO
449
	select COMMON_CLK
450
	select HAVE_CLK_PREPARE
S
Shawn Guo 已提交
451
	select MULTI_IRQ_HANDLER
S
Shawn Guo 已提交
452
	select PINCTRL
S
Shawn Guo 已提交
453
	select SPARSE_IRQ
454
	select USE_OF
455 456 457
	help
	  Support for Freescale MXS-based family of processors

458 459
config ARCH_NETX
	bool "Hilscher NetX based"
460
	select CLKSRC_MMIO
461
	select CPU_ARM926T
462
	select ARM_VIC
463
	select GENERIC_CLOCKEVENTS
464
	help
465 466 467 468
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
469
	select CPU_ARM720T
470
	select ISA_DMA_API
471
	select ARCH_USES_GETTIMEOFFSET
472 473 474
	help
	  This enables support for systems based on the Hynix HMS720x

475 476 477
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
478
	select CPU_XSC3
479 480 481
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
482
	select VMSPLIT_1G
483
	select NEED_MACH_MEMORY_H
484
	select NEED_RET_TO_USER
485 486 487
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

488 489
config ARCH_IOP32X
	bool "IOP32x-based"
490
	depends on MMU
491
	select CPU_XSCALE
492
	select NEED_MACH_GPIO_H
493
	select NEED_MACH_IO_H
494
	select NEED_RET_TO_USER
495
	select PLAT_IOP
496
	select PCI
497
	select ARCH_REQUIRE_GPIOLIB
498
	help
499 500 501 502 503 504
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
505
	select CPU_XSCALE
506
	select NEED_MACH_GPIO_H
507
	select NEED_MACH_IO_H
508
	select NEED_RET_TO_USER
509
	select PLAT_IOP
510
	select PCI
511
	select ARCH_REQUIRE_GPIOLIB
512 513
	help
	  Support for Intel's IOP33X (XScale) family of processors.
L
Linus Torvalds 已提交
514

515 516
config ARCH_IXP4XX
	bool "IXP4xx-based"
517
	depends on MMU
518
	select ARCH_HAS_DMA_SET_COHERENT_MASK
519
	select CLKSRC_MMIO
520
	select CPU_XSCALE
521
	select ARCH_REQUIRE_GPIOLIB
522
	select GENERIC_CLOCKEVENTS
523
	select MIGHT_HAVE_PCI
524
	select NEED_MACH_IO_H
R
Russell King 已提交
525
	select DMABOUNCE if PCI
526
	help
527
	  Support for Intel's IXP4XX (XScale) family of processors.
528

529 530
config ARCH_DOVE
	bool "Marvell Dove"
531
	select CPU_V7
532 533
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
534
	select MIGHT_HAVE_PCI
535
	select PLAT_ORION_LEGACY
536
	select USB_ARCH_HAS_EHCI
537 538 539
	help
	  Support for the Marvell Dove SoC 88AP510

540 541
config ARCH_KIRKWOOD
	bool "Marvell Kirkwood"
542
	select CPU_FEROCEON
543
	select PCI
544
	select ARCH_REQUIRE_GPIOLIB
545
	select GENERIC_CLOCKEVENTS
546
	select PLAT_ORION_LEGACY
547 548 549 550
	help
	  Support for the following Marvell Kirkwood series SoCs:
	  88F6180, 88F6192 and 88F6281.

551 552
config ARCH_LPC32XX
	bool "NXP LPC32XX"
553
	select CLKSRC_MMIO
554 555 556 557 558
	select CPU_ARM926T
	select ARCH_REQUIRE_GPIOLIB
	select HAVE_IDE
	select ARM_AMBA
	select USB_ARCH_HAS_OHCI
559
	select CLKDEV_LOOKUP
560
	select GENERIC_CLOCKEVENTS
561
	select USE_OF
562
	select HAVE_PWM
563 564 565
	help
	  Support for the NXP LPC32XX family of processors

566 567
config ARCH_MV78XX0
	bool "Marvell MV78xx0"
568
	select CPU_FEROCEON
569
	select PCI
570
	select ARCH_REQUIRE_GPIOLIB
571
	select GENERIC_CLOCKEVENTS
572
	select PLAT_ORION_LEGACY
573 574 575 576
	help
	  Support for the following Marvell MV78xx0 series SoCs:
	  MV781x0, MV782x0.

577
config ARCH_ORION5X
578 579
	bool "Marvell Orion"
	depends on MMU
580
	select CPU_FEROCEON
T
Tzachi Perelstein 已提交
581
	select PCI
582
	select ARCH_REQUIRE_GPIOLIB
583
	select GENERIC_CLOCKEVENTS
584
	select PLAT_ORION_LEGACY
585
	help
586
	  Support for the following Marvell Orion 5x series SoCs:
587
	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
588
	  Orion-2 (5281), Orion-1-90 (6183).
589

590
config ARCH_MMP
591
	bool "Marvell PXA168/910/MMP2"
592 593
	depends on MMU
	select ARCH_REQUIRE_GPIOLIB
594
	select CLKDEV_LOOKUP
595
	select GENERIC_CLOCKEVENTS
596
	select GPIO_PXA
H
Haojian Zhuang 已提交
597
	select IRQ_DOMAIN
598
	select PLAT_PXA
H
Haojian Zhuang 已提交
599
	select SPARSE_IRQ
L
Leo Yan 已提交
600
	select GENERIC_ALLOCATOR
601
	select NEED_MACH_GPIO_H
602
	help
603
	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
604 605 606 607

config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
	select CPU_ARM922T
608
	select ARCH_REQUIRE_GPIOLIB
609
	select NEED_MACH_MEMORY_H
610 611
	select CLKSRC_MMIO
	select GENERIC_CLOCKEVENTS
612 613 614 615 616 617 618
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

config ARCH_W90X900
	bool "Nuvoton W90X900 CPU"
	select CPU_ARM926T
619
	select ARCH_REQUIRE_GPIOLIB
620
	select CLKDEV_LOOKUP
621
	select CLKSRC_MMIO
622
	select GENERIC_CLOCKEVENTS
623
	help
624 625 626 627 628 629 630
	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
	  At present, the w90x900 has been renamed nuc900, regarding
	  the ARM series product line, you can login the following
	  link address to know more.

	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
631

632 633
config ARCH_TEGRA
	bool "NVIDIA Tegra"
R
Russell King 已提交
634
	select CLKDEV_LOOKUP
635
	select CLKSRC_MMIO
636 637 638
	select GENERIC_CLOCKEVENTS
	select GENERIC_GPIO
	select HAVE_CLK
639
	select HAVE_SMP
640
	select MIGHT_HAVE_CACHE_L2X0
C
Colin Cross 已提交
641
	select ARCH_HAS_CPUFREQ
642
	select USE_OF
643
	select COMMON_CLK
644 645 646 647
	help
	  This enables support for NVIDIA Tegra based systems (Tegra APX,
	  Tegra 6xx and Tegra 2 series).

L
Linus Torvalds 已提交
648
config ARCH_PXA
E
eric miao 已提交
649
	bool "PXA2xx/PXA3xx-based"
650
	depends on MMU
651
	select ARCH_MTD_XIP
652
	select ARCH_HAS_CPUFREQ
653
	select CLKDEV_LOOKUP
654
	select CLKSRC_MMIO
M
Michael Buesch 已提交
655
	select ARCH_REQUIRE_GPIOLIB
656
	select GENERIC_CLOCKEVENTS
657
	select GPIO_PXA
658
	select PLAT_PXA
659
	select SPARSE_IRQ
E
Eric Miao 已提交
660
	select AUTO_ZRELADDR
661
	select MULTI_IRQ_HANDLER
662
	select ARM_CPU_SUSPEND if PM
663
	select HAVE_IDE
664
	select NEED_MACH_GPIO_H
665
	help
E
eric miao 已提交
666
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
L
Linus Torvalds 已提交
667

668 669
config ARCH_MSM
	bool "Qualcomm MSM"
670
	select HAVE_CLK
671
	select GENERIC_CLOCKEVENTS
P
Pavel Machek 已提交
672
	select ARCH_REQUIRE_GPIOLIB
S
Stephen Boyd 已提交
673
	select CLKDEV_LOOKUP
674
	help
675 676 677 678 679
	  Support for Qualcomm MSM/QSD based systems.  This runs on the
	  apps processor of the MSM/QSD and depends on a shared memory
	  interface to the modem processor which runs the baseband
	  stack and controls some vital subsystems
	  (clock and power control, etc).
680

681
config ARCH_SHMOBILE
682 683
	bool "Renesas SH-Mobile / R-Mobile"
	select HAVE_CLK
P
Paul Mundt 已提交
684
	select CLKDEV_LOOKUP
685
	select HAVE_MACH_CLKDEV
686
	select HAVE_SMP
687
	select GENERIC_CLOCKEVENTS
688
	select MIGHT_HAVE_CACHE_L2X0
689 690
	select NO_IOPORT
	select SPARSE_IRQ
691
	select MULTI_IRQ_HANDLER
692
	select PM_GENERIC_DOMAINS if PM
693
	select NEED_MACH_MEMORY_H
694
	help
695
	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
696

L
Linus Torvalds 已提交
697 698 699 700
config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
701
	select ARCH_MAY_HAVE_PC_FDC
702
	select HAVE_PATA_PLATFORM
703
	select ISA_DMA_API
A
Al Viro 已提交
704
	select NO_IOPORT
705
	select ARCH_SPARSEMEM_ENABLE
706
	select ARCH_USES_GETTIMEOFFSET
707
	select HAVE_IDE
708
	select NEED_MACH_IO_H
709
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
710 711 712 713 714 715
	help
	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
	  CD-ROM interface, serial and parallel port, and the floppy drive.

config ARCH_SA1100
	bool "SA1100-based"
716
	select CLKSRC_MMIO
717
	select CPU_SA1100
718
	select ISA
719
	select ARCH_SPARSEMEM_ENABLE
720
	select ARCH_MTD_XIP
721
	select ARCH_HAS_CPUFREQ
R
Russell King 已提交
722
	select CPU_FREQ
723
	select GENERIC_CLOCKEVENTS
J
Jett.Zhou 已提交
724
	select CLKDEV_LOOKUP
M
Michael Buesch 已提交
725
	select ARCH_REQUIRE_GPIOLIB
726
	select HAVE_IDE
727
	select NEED_MACH_GPIO_H
728
	select NEED_MACH_MEMORY_H
729
	select SPARSE_IRQ
730 731
	help
	  Support for StrongARM 11x0 based boards.
L
Linus Torvalds 已提交
732

733 734
config ARCH_S3C24XX
	bool "Samsung S3C24XX SoCs"
D
David Brownell 已提交
735
	select GENERIC_GPIO
B
Ben Dooks 已提交
736
	select ARCH_HAS_CPUFREQ
737
	select HAVE_CLK
738
	select CLKDEV_LOOKUP
739
	select ARCH_USES_GETTIMEOFFSET
740
	select HAVE_S3C2410_I2C if I2C
741 742
	select HAVE_S3C_RTC if RTC_CLASS
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
743
	select NEED_MACH_GPIO_H
744
	select NEED_MACH_IO_H
L
Linus Torvalds 已提交
745
	help
746 747 748 749
	  Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
	  and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
	  (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
	  Samsung SMDK2410 development board (and derivatives).
750

B
Ben Dooks 已提交
751 752
config ARCH_S3C64XX
	bool "Samsung S3C64XX"
753
	select PLAT_SAMSUNG
754 755
	select CPU_V6
	select ARM_VIC
B
Ben Dooks 已提交
756
	select HAVE_CLK
M
Mark Brown 已提交
757
	select HAVE_TCM
758
	select CLKDEV_LOOKUP
759
	select NO_IOPORT
760
	select ARCH_USES_GETTIMEOFFSET
761
	select ARCH_HAS_CPUFREQ
762 763 764 765 766 767 768
	select ARCH_REQUIRE_GPIOLIB
	select SAMSUNG_CLKSRC
	select SAMSUNG_IRQ_VIC_TIMER
	select S3C_GPIO_TRACK
	select S3C_DEV_NAND
	select USB_ARCH_HAS_OHCI
	select SAMSUNG_GPIOLIB_4BIT
769
	select HAVE_S3C2410_I2C if I2C
770
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
771
	select NEED_MACH_GPIO_H
B
Ben Dooks 已提交
772 773 774
	help
	  Samsung S3C64XX series based systems

775 776
config ARCH_S5P64X0
	bool "Samsung S5P6440 S5P6450"
777 778 779
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
780
	select CLKDEV_LOOKUP
781
	select CLKSRC_MMIO
782
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
783
	select GENERIC_CLOCKEVENTS
784
	select HAVE_S3C2410_I2C if I2C
785
	select HAVE_S3C_RTC if RTC_CLASS
786
	select NEED_MACH_GPIO_H
787
	help
788 789
	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
	  SMDK6450.
790

791 792
config ARCH_S5PC100
	bool "Samsung S5PC100"
793 794
	select GENERIC_GPIO
	select HAVE_CLK
795
	select CLKDEV_LOOKUP
796
	select CPU_V7
797
	select ARCH_USES_GETTIMEOFFSET
798
	select HAVE_S3C2410_I2C if I2C
799
	select HAVE_S3C_RTC if RTC_CLASS
800
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
801
	select NEED_MACH_GPIO_H
802
	help
803
	  Samsung S5PC100 series based systems
804

805 806 807
config ARCH_S5PV210
	bool "Samsung S5PV210/S5PC110"
	select CPU_V7
808
	select ARCH_SPARSEMEM_ENABLE
809
	select ARCH_HAS_HOLES_MEMORYMODEL
810 811
	select GENERIC_GPIO
	select HAVE_CLK
812
	select CLKDEV_LOOKUP
813
	select CLKSRC_MMIO
814
	select ARCH_HAS_CPUFREQ
815
	select GENERIC_CLOCKEVENTS
816
	select HAVE_S3C2410_I2C if I2C
817
	select HAVE_S3C_RTC if RTC_CLASS
818
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
819
	select NEED_MACH_GPIO_H
820
	select NEED_MACH_MEMORY_H
821 822 823
	help
	  Samsung S5PV210/S5PC110 series based systems

824 825
config ARCH_EXYNOS
	bool "SAMSUNG EXYNOS"
826
	select CPU_V7
827
	select ARCH_SPARSEMEM_ENABLE
828
	select ARCH_HAS_HOLES_MEMORYMODEL
829 830
	select GENERIC_GPIO
	select HAVE_CLK
831
	select CLKDEV_LOOKUP
832
	select ARCH_HAS_CPUFREQ
833
	select GENERIC_CLOCKEVENTS
834
	select HAVE_S3C_RTC if RTC_CLASS
835
	select HAVE_S3C2410_I2C if I2C
836
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
837
	select NEED_MACH_GPIO_H
838
	select NEED_MACH_MEMORY_H
839
	help
840
	  Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
841

L
Linus Torvalds 已提交
842 843
config ARCH_SHARK
	bool "Shark"
844
	select CPU_SA110
845 846
	select ISA
	select ISA_DMA
847
	select ZONE_DMA
848
	select PCI
849
	select ARCH_USES_GETTIMEOFFSET
850
	select NEED_MACH_MEMORY_H
851 852 853
	help
	  Support for the StrongARM based Digital DNARD machine, also known
	  as "Shark" (<http://www.shark-linux.de/shark.html>).
L
Linus Torvalds 已提交
854

855 856 857
config ARCH_U300
	bool "ST-Ericsson U300 Series"
	depends on MMU
858
	select CLKSRC_MMIO
859
	select CPU_ARM926T
860
	select HAVE_TCM
861
	select ARM_AMBA
862
	select ARM_PATCH_PHYS_VIRT
863 864
	select ARM_VIC
	select GENERIC_CLOCKEVENTS
865
	select CLKDEV_LOOKUP
866
	select COMMON_CLK
867
	select GENERIC_GPIO
868
	select ARCH_REQUIRE_GPIOLIB
869
	select SPARSE_IRQ
870 871 872
	help
	  Support for ST-Ericsson U300 series mobile platforms.

873 874
config ARCH_U8500
	bool "ST-Ericsson U8500 Series"
A
Arnd Bergmann 已提交
875
	depends on MMU
876 877 878
	select CPU_V7
	select ARM_AMBA
	select GENERIC_CLOCKEVENTS
879
	select CLKDEV_LOOKUP
880
	select ARCH_REQUIRE_GPIOLIB
881
	select ARCH_HAS_CPUFREQ
882
	select HAVE_SMP
883
	select MIGHT_HAVE_CACHE_L2X0
884 885 886 887 888 889 890 891
	help
	  Support for ST-Ericsson's Ux500 architecture

config ARCH_NOMADIK
	bool "STMicroelectronics Nomadik"
	select ARM_AMBA
	select ARM_VIC
	select CPU_ARM926T
892
	select COMMON_CLK
893
	select GENERIC_CLOCKEVENTS
894
	select PINCTRL
895
	select PINCTRL_STN8815
896
	select MIGHT_HAVE_CACHE_L2X0
897 898 899 900
	select ARCH_REQUIRE_GPIOLIB
	help
	  Support for the Nomadik platform by ST-Ericsson

901 902 903
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_CLOCKEVENTS
904
	select ARCH_REQUIRE_GPIOLIB
905
	select ZONE_DMA
906
	select HAVE_IDE
907
	select CLKDEV_LOOKUP
D
David Brownell 已提交
908
	select GENERIC_ALLOCATOR
R
Russell King 已提交
909
	select GENERIC_IRQ_CHIP
910
	select ARCH_HAS_HOLES_MEMORYMODEL
911
	select NEED_MACH_GPIO_H
912 913 914
	help
	  Support for TI's DaVinci platform.

915 916
config ARCH_OMAP
	bool "TI OMAP"
A
Arnd Bergmann 已提交
917
	depends on MMU
918
	select HAVE_CLK
M
Michael Buesch 已提交
919
	select ARCH_REQUIRE_GPIOLIB
920
	select ARCH_HAS_CPUFREQ
921
	select CLKSRC_MMIO
922
	select GENERIC_CLOCKEVENTS
923
	select ARCH_HAS_HOLES_MEMORYMODEL
924
	select NEED_MACH_GPIO_H
925
	help
926
	  Support for TI's OMAP platform (OMAP1/2/3/4).
927

928 929 930 931
config PLAT_SPEAR
	bool "ST SPEAr"
	select ARM_AMBA
	select ARCH_REQUIRE_GPIOLIB
932
	select CLKDEV_LOOKUP
933
	select COMMON_CLK
934
	select CLKSRC_MMIO
935 936 937 938 939
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	help
	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).

940 941 942 943 944 945 946
config ARCH_VT8500
	bool "VIA/WonderMedia 85xx"
	select CPU_ARM926T
	select GENERIC_GPIO
	select ARCH_HAS_CPUFREQ
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
947 948 949 950
	select USE_OF
	select COMMON_CLK
	select HAVE_CLK
	select CLKDEV_LOOKUP
951 952
	help
	  Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
953

954 955
config ARCH_ZYNQ
	bool "Xilinx Zynq ARM Cortex A9 Platform"
956 957 958
	select CPU_V7
	select GENERIC_CLOCKEVENTS
	select CLKDEV_LOOKUP
959 960 961
	select ARM_GIC
	select ARM_AMBA
	select ICST
962
	select MIGHT_HAVE_CACHE_L2X0
963 964
	select USE_OF
	help
965
	  Support for Xilinx Zynq ARM Cortex A9 Platform
L
Linus Torvalds 已提交
966 967
endchoice

R
Rob Herring 已提交
968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998
menu "Multiple platform selection"
	depends on ARCH_MULTIPLATFORM

comment "CPU Core family selection"

config ARCH_MULTI_V4
	bool "ARMv4 based platforms (FA526, StrongARM)"
	select ARCH_MULTI_V4_V5
	depends on !ARCH_MULTI_V6_V7

config ARCH_MULTI_V4T
	bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
	select ARCH_MULTI_V4_V5
	depends on !ARCH_MULTI_V6_V7

config ARCH_MULTI_V5
	bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
	select ARCH_MULTI_V4_V5
	depends on !ARCH_MULTI_V6_V7

config ARCH_MULTI_V4_V5
	bool

config ARCH_MULTI_V6
	bool "ARMv6 based platforms (ARM11, Scorpion, ...)"
	select CPU_V6
	select ARCH_MULTI_V6_V7

config ARCH_MULTI_V7
	bool "ARMv7 based platforms (Cortex-A, PJ4, Krait)"
	select CPU_V7
999
	select ARCH_VEXPRESS
R
Rob Herring 已提交
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
	default y
	select ARCH_MULTI_V6_V7

config ARCH_MULTI_V6_V7
	bool

config ARCH_MULTI_CPU_AUTO
	def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
	select ARCH_MULTI_V5

endmenu

1012 1013 1014 1015 1016
#
# This is sorted alphabetically by mach-* pathname.  However, plat-*
# Kconfigs may be included either alphabetically (according to the
# plat- suffix) or along side the corresponding mach-* source.
#
1017 1018
source "arch/arm/mach-mvebu/Kconfig"

1019 1020
source "arch/arm/mach-at91/Kconfig"

L
Linus Torvalds 已提交
1021 1022
source "arch/arm/mach-clps711x/Kconfig"

1023 1024
source "arch/arm/mach-cns3xxx/Kconfig"

1025 1026 1027 1028
source "arch/arm/mach-davinci/Kconfig"

source "arch/arm/mach-dove/Kconfig"

1029 1030
source "arch/arm/mach-ep93xx/Kconfig"

L
Linus Torvalds 已提交
1031 1032
source "arch/arm/mach-footbridge/Kconfig"

1033 1034
source "arch/arm/mach-gemini/Kconfig"

1035 1036
source "arch/arm/mach-h720x/Kconfig"

R
Rob Herring 已提交
1037 1038
source "arch/arm/mach-highbank/Kconfig"

L
Linus Torvalds 已提交
1039 1040
source "arch/arm/mach-integrator/Kconfig"

1041 1042 1043
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
L
Linus Torvalds 已提交
1044

1045 1046
source "arch/arm/mach-iop13xx/Kconfig"

L
Linus Torvalds 已提交
1047 1048
source "arch/arm/mach-ixp4xx/Kconfig"

1049 1050 1051 1052 1053 1054
source "arch/arm/mach-kirkwood/Kconfig"

source "arch/arm/mach-ks8695/Kconfig"

source "arch/arm/mach-msm/Kconfig"

1055 1056
source "arch/arm/mach-mv78xx0/Kconfig"

1057
source "arch/arm/plat-mxc/Kconfig"
L
Linus Torvalds 已提交
1058

1059 1060
source "arch/arm/mach-mxs/Kconfig"

1061
source "arch/arm/mach-netx/Kconfig"
1062

1063 1064 1065
source "arch/arm/mach-nomadik/Kconfig"
source "arch/arm/plat-nomadik/Kconfig"

1066 1067 1068
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
L
Linus Torvalds 已提交
1069

1070 1071
source "arch/arm/mach-omap2/Kconfig"

1072
source "arch/arm/mach-orion5x/Kconfig"
1073

R
Rob Herring 已提交
1074 1075
source "arch/arm/mach-picoxcell/Kconfig"

1076 1077
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/plat-pxa/Kconfig"
1078

1079 1080 1081 1082 1083
source "arch/arm/mach-mmp/Kconfig"

source "arch/arm/mach-realview/Kconfig"

source "arch/arm/mach-sa1100/Kconfig"
1084

1085
source "arch/arm/plat-samsung/Kconfig"
1086 1087
source "arch/arm/plat-s3c24xx/Kconfig"

R
Rob Herring 已提交
1088 1089
source "arch/arm/mach-socfpga/Kconfig"

1090
source "arch/arm/plat-spear/Kconfig"
1091

1092
source "arch/arm/mach-s3c24xx/Kconfig"
1093
if ARCH_S3C24XX
1094 1095 1096
source "arch/arm/mach-s3c2412/Kconfig"
source "arch/arm/mach-s3c2440/Kconfig"
endif
L
Linus Torvalds 已提交
1097

B
Ben Dooks 已提交
1098
if ARCH_S3C64XX
1099
source "arch/arm/mach-s3c64xx/Kconfig"
B
Ben Dooks 已提交
1100 1101
endif

1102
source "arch/arm/mach-s5p64x0/Kconfig"
1103

1104 1105
source "arch/arm/mach-s5pc100/Kconfig"

1106 1107
source "arch/arm/mach-s5pv210/Kconfig"

1108
source "arch/arm/mach-exynos/Kconfig"
1109

1110
source "arch/arm/mach-shmobile/Kconfig"
1111

1112 1113
source "arch/arm/mach-prima2/Kconfig"

1114 1115
source "arch/arm/mach-tegra/Kconfig"

1116
source "arch/arm/mach-u300/Kconfig"
L
Linus Torvalds 已提交
1117

1118
source "arch/arm/mach-ux500/Kconfig"
L
Linus Torvalds 已提交
1119 1120 1121

source "arch/arm/mach-versatile/Kconfig"

1122
source "arch/arm/mach-vexpress/Kconfig"
1123
source "arch/arm/plat-versatile/Kconfig"
1124

1125 1126
source "arch/arm/mach-w90x900/Kconfig"

L
Linus Torvalds 已提交
1127 1128 1129 1130
# Definitions to make life easier
config ARCH_ACORN
	bool

1131 1132
config PLAT_IOP
	bool
M
Mikael Pettersson 已提交
1133
	select GENERIC_CLOCKEVENTS
1134

L
Lennert Buytenhek 已提交
1135 1136
config PLAT_ORION
	bool
1137
	select CLKSRC_MMIO
R
Russell King 已提交
1138
	select GENERIC_IRQ_CHIP
1139
	select IRQ_DOMAIN
1140
	select COMMON_CLK
L
Lennert Buytenhek 已提交
1141

1142 1143 1144 1145
config PLAT_ORION_LEGACY
	bool
	select PLAT_ORION

1146 1147 1148
config PLAT_PXA
	bool

1149 1150 1151
config PLAT_VERSATILE
	bool

1152 1153
config ARM_TIMER_SP804
	bool
1154
	select CLKSRC_MMIO
1155
	select HAVE_SCHED_CLOCK
1156

L
Linus Torvalds 已提交
1157 1158
source arch/arm/mm/Kconfig

1159 1160 1161 1162 1163
config ARM_NR_BANKS
	int
	default 16 if ARCH_EP93XX
	default 8

1164 1165
config IWMMXT
	bool "Enable iWMMXt support"
1166 1167
	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
1168 1169 1170 1171
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

L
Linus Torvalds 已提交
1172 1173
config XSCALE_PMU
	bool
1174
	depends on CPU_XSCALE
L
Linus Torvalds 已提交
1175 1176
	default y

1177 1178 1179 1180 1181
config MULTI_IRQ_HANDLER
	bool
	help
	  Allow each machine to specify it's own IRQ handler at run time.

1182 1183 1184 1185
if !MMU
source "arch/arm/Kconfig-nommu"
endif

1186 1187 1188 1189 1190 1191 1192 1193 1194
config ARM_ERRATA_326103
	bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
	depends on CPU_V6
	help
	  Executing a SWP instruction to read-only memory does not set bit 11
	  of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
	  treat the access as a read, preventing a COW from occurring and
	  causing the faulting task to livelock.

1195 1196
config ARM_ERRATA_411920
	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1197
	depends on CPU_V6 || CPU_V6K
1198 1199 1200 1201 1202 1203
	help
	  Invalidation of the Instruction Cache operation can
	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
	  It does not affect the MPCore. This option enables the ARM Ltd.
	  recommended workaround.

1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
config ARM_ERRATA_430973
	bool "ARM errata: Stale prediction on replaced interworking branch"
	depends on CPU_V7
	help
	  This option enables the workaround for the 430973 Cortex-A8
	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
	  interworking branch is replaced with another code sequence at the
	  same virtual address, whether due to self-modifying code or virtual
	  to physical address re-mapping, Cortex-A8 does not recover from the
	  stale interworking branch prediction. This results in Cortex-A8
	  executing the new code sequence in the incorrect ARM or Thumb state.
	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
	  and also flushes the branch target cache at every context switch.
	  Note that setting specific bits in the ACTLR register may not be
	  available in non-secure mode.

1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232
config ARM_ERRATA_458693
	bool "ARM errata: Processor deadlock when a false hazard is created"
	depends on CPU_V7
	help
	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
	  erratum. For very specific sequences of memory operations, it is
	  possible for a hazard condition intended for a cache line to instead
	  be incorrectly associated with a different cache line. This false
	  hazard might then cause a processor deadlock. The workaround enables
	  the L1 caching of the NEON accesses and disables the PLD instruction
	  in the ACTLR register. Note that setting specific bits in the ACTLR
	  register may not be available in non-secure mode.

1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244
config ARM_ERRATA_460075
	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
	depends on CPU_V7
	help
	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
	  erratum. Any asynchronous access to the L2 cache may encounter a
	  situation in which recent store transactions to the L2 cache are lost
	  and overwritten with stale memory contents from external memory. The
	  workaround disables the write-allocate mode for the L2 cache via the
	  ACTLR register. Note that setting specific bits in the ACTLR register
	  may not be available in non-secure mode.

1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
config ARM_ERRATA_742230
	bool "ARM errata: DMB operation may be faulty"
	depends on CPU_V7 && SMP
	help
	  This option enables the workaround for the 742230 Cortex-A9
	  (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
	  between two write operations may not ensure the correct visibility
	  ordering of the two writes. This workaround sets a specific bit in
	  the diagnostic register of the Cortex-A9 which causes the DMB
	  instruction to behave as a DSB, ensuring the correct behaviour of
	  the two writes.

1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270
config ARM_ERRATA_742231
	bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
	depends on CPU_V7 && SMP
	help
	  This option enables the workaround for the 742231 Cortex-A9
	  (r2p0..r2p2) erratum. Under certain conditions, specific to the
	  Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
	  accessing some data located in the same cache line, may get corrupted
	  data due to bad handling of the address hazard when the line gets
	  replaced from one of the CPUs at the same time as another CPU is
	  accessing it. This workaround sets specific bits in the diagnostic
	  register of the Cortex-A9 which reduces the linefill issuing
	  capabilities of the processor.

1271
config PL310_ERRATA_588369
1272
	bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
1273
	depends on CACHE_L2X0
1274 1275 1276 1277 1278 1279 1280 1281
	help
	   The PL310 L2 cache controller implements three types of Clean &
	   Invalidate maintenance operations: by Physical Address
	   (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
	   They are architecturally defined to behave as the execution of a
	   clean operation followed immediately by an invalidate operation,
	   both performing to the same memory location. This functionality
	   is not correctly implemented in PL310 as clean lines are not
1282
	   invalidated as a result of these operations.
1283 1284 1285

config ARM_ERRATA_720789
	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1286
	depends on CPU_V7
1287 1288 1289 1290 1291 1292 1293 1294
	help
	  This option enables the workaround for the 720789 Cortex-A9 (prior to
	  r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
	  broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
	  As a consequence of this erratum, some TLB entries which should be
	  invalidated are not, resulting in an incoherency in the system page
	  tables. The workaround changes the TLB flushing routines to invalidate
	  entries regardless of the ASID.
1295

R
Russell King 已提交
1296
config PL310_ERRATA_727915
1297
	bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
R
Russell King 已提交
1298 1299 1300 1301 1302 1303 1304 1305 1306
	depends on CACHE_L2X0
	help
	  PL310 implements the Clean & Invalidate by Way L2 cache maintenance
	  operation (offset 0x7FC). This operation runs in background so that
	  PL310 can handle normal accesses while it is in progress. Under very
	  rare circumstances, due to this erratum, write data can be lost when
	  PL310 treats a cacheable write transaction during a Clean &
	  Invalidate by Way operation.

1307 1308 1309 1310 1311
config ARM_ERRATA_743622
	bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
	depends on CPU_V7
	help
	  This option enables the workaround for the 743622 Cortex-A9
1312
	  (r2p*) erratum. Under very rare conditions, a faulty
1313 1314 1315 1316 1317 1318 1319
	  optimisation in the Cortex-A9 Store Buffer may lead to data
	  corruption. This workaround sets a specific bit in the diagnostic
	  register of the Cortex-A9 which disables the Store Buffer
	  optimisation, preventing the defect from occurring. This has no
	  visible impact on the overall performance or power consumption of the
	  processor.

1320 1321
config ARM_ERRATA_751472
	bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1322
	depends on CPU_V7
1323 1324 1325 1326 1327 1328 1329
	help
	  This option enables the workaround for the 751472 Cortex-A9 (prior
	  to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
	  completion of a following broadcasted operation if the second
	  operation is received by a CPU before the ICIALLUIS has completed,
	  potentially leading to corrupted entries in the cache or TLB.

1330 1331
config PL310_ERRATA_753970
	bool "PL310 errata: cache sync operation may be faulty"
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344
	depends on CACHE_PL310
	help
	  This option enables the workaround for the 753970 PL310 (r3p0) erratum.

	  Under some condition the effect of cache sync operation on
	  the store buffer still remains when the operation completes.
	  This means that the store buffer is always asked to drain and
	  this prevents it from merging any further writes. The workaround
	  is to replace the normal offset of cache sync operation (0x730)
	  by another offset targeting an unmapped PL310 register 0x740.
	  This has the same effect as the cache sync operation: store buffer
	  drain and waiting for all buffers empty.

1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
config ARM_ERRATA_754322
	bool "ARM errata: possible faulty MMU translations following an ASID switch"
	depends on CPU_V7
	help
	  This option enables the workaround for the 754322 Cortex-A9 (r2p*,
	  r3p*) erratum. A speculative memory access may cause a page table walk
	  which starts prior to an ASID switch but completes afterwards. This
	  can populate the micro-TLB with a stale entry which may be hit with
	  the new ASID. This workaround places two dsb instructions in the mm
	  switching code so that no page table walks can cross the ASID switch.

1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366
config ARM_ERRATA_754327
	bool "ARM errata: no automatic Store Buffer drain"
	depends on CPU_V7 && SMP
	help
	  This option enables the workaround for the 754327 Cortex-A9 (prior to
	  r2p0) erratum. The Store Buffer does not have any automatic draining
	  mechanism and therefore a livelock may occur if an external agent
	  continuously polls a memory location waiting to observe an update.
	  This workaround defines cpu_relax() as smp_mb(), preventing correctly
	  written polling loops from denying visibility of updates to memory.

1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378
config ARM_ERRATA_364296
	bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
	depends on CPU_V6 && !SMP
	help
	  This options enables the workaround for the 364296 ARM1136
	  r0p2 erratum (possible cache data corruption with
	  hit-under-miss enabled). It sets the undocumented bit 31 in
	  the auxiliary control register and the FI bit in the control
	  register, thus disabling hit-under-miss without putting the
	  processor into full low interrupt latency mode. ARM11MPCore
	  is not affected.

1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392
config ARM_ERRATA_764369
	bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
	depends on CPU_V7 && SMP
	help
	  This option enables the workaround for erratum 764369
	  affecting Cortex-A9 MPCore with two or more processors (all
	  current revisions). Under certain timing circumstances, a data
	  cache line maintenance operation by MVA targeting an Inner
	  Shareable memory region may fail to proceed up to either the
	  Point of Coherency or to the Point of Unification of the
	  system. This workaround adds a DSB instruction before the
	  relevant cache maintenance functions and sets a specific bit
	  in the diagnostic control register of the SCU.

1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404
config PL310_ERRATA_769419
	bool "PL310 errata: no automatic Store Buffer drain"
	depends on CACHE_L2X0
	help
	  On revisions of the PL310 prior to r3p2, the Store Buffer does
	  not automatically drain. This can cause normal, non-cacheable
	  writes to be retained when the memory system is idle, leading
	  to suboptimal I/O performance for drivers using coherent DMA.
	  This option adds a write barrier to the cpu_idle loop so that,
	  on systems with an outer cache, the store buffer is drained
	  explicitly.

L
Linus Torvalds 已提交
1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422
endmenu

source "arch/arm/common/Kconfig"

menu "Bus support"

config ARM_AMBA
	bool

config ISA
	bool
	help
	  Find out whether you have ISA slots on your motherboard.  ISA is the
	  name of a bus system, i.e. the way the CPU talks to the other stuff
	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
	  newer boards don't support it.  If you have ISA, say Y, otherwise N.

1423
# Select ISA DMA controller support
L
Linus Torvalds 已提交
1424 1425
config ISA_DMA
	bool
1426
	select ISA_DMA_API
L
Linus Torvalds 已提交
1427

1428
# Select ISA DMA interface
A
Al Viro 已提交
1429 1430 1431
config ISA_DMA_API
	bool

L
Linus Torvalds 已提交
1432
config PCI
1433
	bool "PCI support" if MIGHT_HAVE_PCI
L
Linus Torvalds 已提交
1434 1435 1436 1437 1438 1439
	help
	  Find out whether you have a PCI motherboard. PCI is the name of a
	  bus system, i.e. the way the CPU talks to the other stuff inside
	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
	  VESA. If you have PCI, say Y, otherwise N.

1440 1441 1442 1443
config PCI_DOMAINS
	bool
	depends on PCI

1444 1445 1446 1447 1448 1449
config PCI_NANOENGINE
	bool "BSE nanoEngine PCI support"
	depends on SA1100_NANOENGINE
	help
	  Enable PCI on the BSE nanoEngine board.

1450 1451 1452
config PCI_SYSCALL
	def_bool PCI

L
Linus Torvalds 已提交
1453 1454 1455 1456 1457 1458
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

M
Mike Rapoport 已提交
1459 1460 1461 1462 1463 1464
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

L
Linus Torvalds 已提交
1465 1466 1467 1468 1469 1470 1471 1472
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

1473 1474 1475 1476 1477 1478 1479 1480 1481
config HAVE_SMP
	bool
	help
	  This option should be selected by machines which have an SMP-
	  capable CPU.

	  The only effect of this option is to make the SMP-related
	  options available to the user for configuration.

L
Linus Torvalds 已提交
1482
config SMP
1483
	bool "Symmetric Multi-Processing"
1484
	depends on CPU_V6K || CPU_V7
1485
	depends on GENERIC_CLOCKEVENTS
1486
	depends on HAVE_SMP
A
Arnd Bergmann 已提交
1487
	depends on MMU
1488
	select USE_GENERIC_SMP_HELPERS
1489
	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
L
Linus Torvalds 已提交
1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500
	help
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, like most personal computers, say N. If
	  you have a system with more than one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all, single
	  processor machines. On a single processor machine, the kernel will
	  run faster if you say N here.

P
Paul Bolle 已提交
1501
	  See also <file:Documentation/x86/i386/IO-APIC.txt>,
L
Linus Torvalds 已提交
1502
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1503
	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
L
Linus Torvalds 已提交
1504 1505 1506

	  If you don't know what to do here, say N.

1507 1508 1509
config SMP_ON_UP
	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
	depends on EXPERIMENTAL
1510
	depends on SMP && !XIP_KERNEL
1511 1512 1513 1514 1515 1516 1517 1518 1519
	default y
	help
	  SMP kernels contain instructions which fail on non-SMP processors.
	  Enabling this option allows the kernel to modify itself to make
	  these instructions safe.  Disabling it allows about 1K of space
	  savings.

	  If you don't know what to do here, say Y.

1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544
config ARM_CPU_TOPOLOGY
	bool "Support cpu topology definition"
	depends on SMP && CPU_V7
	default y
	help
	  Support ARM cpu topology definition. The MPIDR register defines
	  affinity between processors which is then used to describe the cpu
	  topology of an ARM System.

config SCHED_MC
	bool "Multi-core scheduler support"
	depends on ARM_CPU_TOPOLOGY
	help
	  Multi-core scheduler support improves the CPU scheduler's decision
	  making when dealing with multi-core CPU chips at a cost of slightly
	  increased overhead in some places. If unsure say N here.

config SCHED_SMT
	bool "SMT scheduler support"
	depends on ARM_CPU_TOPOLOGY
	help
	  Improves the CPU scheduler's decision making when dealing with
	  MultiThreading at a cost of slightly increased overhead in some
	  places. If unsure say N here.

1545 1546 1547 1548 1549
config HAVE_ARM_SCU
	bool
	help
	  This option enables support for the ARM system coherency unit

1550 1551 1552 1553 1554 1555
config ARM_ARCH_TIMER
	bool "Architected timer support"
	depends on CPU_V7
	help
	  This option enables support for the ARM architected timer

1556 1557 1558 1559 1560 1561
config HAVE_ARM_TWD
	bool
	depends on SMP
	help
	  This options enables support for the ARM timer and watchdog unit

1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584
choice
	prompt "Memory split"
	default VMSPLIT_3G
	help
	  Select the desired split between kernel and user memory.

	  If you are not absolutely sure what you are doing, leave this
	  option alone!

	config VMSPLIT_3G
		bool "3G/1G user/kernel split"
	config VMSPLIT_2G
		bool "2G/2G user/kernel split"
	config VMSPLIT_1G
		bool "1G/3G user/kernel split"
endchoice

config PAGE_OFFSET
	hex
	default 0x40000000 if VMSPLIT_1G
	default 0x80000000 if VMSPLIT_2G
	default 0xC0000000

L
Linus Torvalds 已提交
1585 1586 1587 1588 1589 1590
config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

1591 1592 1593 1594 1595 1596 1597
config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
	depends on SMP && HOTPLUG && EXPERIMENTAL
	help
	  Say Y here to experiment with turning CPUs off and on.  CPUs
	  can be controlled through /sys/devices/system/cpu.

1598 1599
config LOCAL_TIMERS
	bool "Use local timer interrupts"
1600
	depends on SMP
1601
	default y
1602
	select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
1603 1604 1605 1606 1607 1608
	help
	  Enable support for local timers on SMP platforms, rather then the
	  legacy IPI broadcast method.  Local timers allows the system
	  accounting to be spread across the timer interval, preventing a
	  "thundering herd" at every timer tick.

1609 1610
config ARCH_NR_GPIO
	int
1611
	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
1612
	default 355 if ARCH_U8500
1613
	default 264 if MACH_H4700
1614
	default 512 if SOC_OMAP5
1615
	default 288 if ARCH_VT8500
1616 1617 1618 1619 1620 1621
	default 0
	help
	  Maximum number of GPIOs in the system.

	  If unsure, leave the default value.

1622
source kernel/Kconfig.preempt
L
Linus Torvalds 已提交
1623

1624 1625
config HZ
	int
1626
	default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
K
Kukjin Kim 已提交
1627
		ARCH_S5PV210 || ARCH_EXYNOS4
1628
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1629
	default AT91_TIMER_HZ if ARCH_AT91
1630
	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1631 1632
	default 100

1633
config THUMB2_KERNEL
1634
	bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
1635
	depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
1636 1637
	select AEABI
	select ARM_ASM_UNIFIED
1638
	select ARM_UNWIND
1639 1640 1641 1642 1643 1644 1645
	help
	  By enabling this option, the kernel will be compiled in
	  Thumb-2 mode. A compiler/assembler that understand the unified
	  ARM-Thumb syntax is needed.

	  If unsure, say N.

1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676
config THUMB2_AVOID_R_ARM_THM_JUMP11
	bool "Work around buggy Thumb-2 short branch relocations in gas"
	depends on THUMB2_KERNEL && MODULES
	default y
	help
	  Various binutils versions can resolve Thumb-2 branches to
	  locally-defined, preemptible global symbols as short-range "b.n"
	  branch instructions.

	  This is a problem, because there's no guarantee the final
	  destination of the symbol, or any candidate locations for a
	  trampoline, are within range of the branch.  For this reason, the
	  kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
	  relocation in modules at all, and it makes little sense to add
	  support.

	  The symptom is that the kernel fails with an "unsupported
	  relocation" error when loading some modules.

	  Until fixed tools are available, passing
	  -fno-optimize-sibling-calls to gcc should prevent gcc generating
	  code which hits this problem, at the cost of a bit of extra runtime
	  stack usage in some cases.

	  The problem is described in more detail at:
	      https://bugs.launchpad.net/binutils-linaro/+bug/725126

	  Only Thumb-2 kernels are affected.

	  Unless you are sure your tools don't have this problem, say Y.

1677 1678 1679
config ARM_ASM_UNIFIED
	bool

1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694
config AEABI
	bool "Use the ARM EABI to compile the kernel"
	help
	  This option allows for the kernel to be compiled using the latest
	  ARM ABI (aka EABI).  This is only useful if you are using a user
	  space environment that is also compiled with EABI.

	  Since there are major incompatibilities between the legacy ABI and
	  EABI, especially with regard to structure member alignment, this
	  option also changes the kernel syscall calling convention to
	  disambiguate both ABIs and allow for backward compatibility support
	  (selected with CONFIG_OABI_COMPAT).

	  To use this you need GCC version 4.0.0 or later.

1695
config OABI_COMPAT
1696
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1697
	depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711
	default y
	help
	  This option preserves the old syscall interface along with the
	  new (ARM EABI) one. It also provides a compatibility layer to
	  intercept syscalls that have structure arguments which layout
	  in memory differs between the legacy ABI and the new ARM EABI
	  (only for non "thumb" binaries). This option adds a tiny
	  overhead to all syscalls and produces a slightly larger kernel.
	  If you know you'll be using only pure EABI user space then you
	  can say N here. If this option is not selected and you attempt
	  to execute a legacy ABI binary then the result will be
	  UNPREDICTABLE (in fact it can be predicted that it won't work
	  at all). If in doubt say Y.

1712
config ARCH_HAS_HOLES_MEMORYMODEL
1713 1714
	bool

1715 1716 1717
config ARCH_SPARSEMEM_ENABLE
	bool

1718 1719 1720
config ARCH_SPARSEMEM_DEFAULT
	def_bool ARCH_SPARSEMEM_ENABLE

1721
config ARCH_SELECT_MEMORY_MODEL
R
Russell King 已提交
1722
	def_bool ARCH_SPARSEMEM_ENABLE
Y
Yasunori Goto 已提交
1723

1724 1725 1726
config HAVE_ARCH_PFN_VALID
	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM

N
Nicolas Pitre 已提交
1727
config HIGHMEM
1728 1729
	bool "High Memory Support"
	depends on MMU
N
Nicolas Pitre 已提交
1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743
	help
	  The address space of ARM processors is only 4 Gigabytes large
	  and it has to accommodate user address space, kernel address
	  space as well as some memory mapped IO. That means that, if you
	  have a large amount of physical memory and/or IO, not all of the
	  memory can be "permanently mapped" by the kernel. The physical
	  memory that is not permanently mapped is called "high memory".

	  Depending on the selected kernel/user memory split, minimum
	  vmalloc space and actual amount of RAM, you may not need this
	  option which should result in a slightly faster kernel.

	  If unsure, say n.

R
Russell King 已提交
1744 1745 1746 1747
config HIGHPTE
	bool "Allocate 2nd-level pagetables from highmem"
	depends on HIGHMEM

1748 1749
config HW_PERF_EVENTS
	bool "Enable hardware performance counter support for perf events"
1750
	depends on PERF_EVENTS
1751 1752 1753 1754 1755
	default y
	help
	  Enable hardware performance counter support for perf events. If
	  disabled, perf events will use software events only.

1756 1757
source "mm/Kconfig"

1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773
config FORCE_MAX_ZONEORDER
	int "Maximum zone order" if ARCH_SHMOBILE
	range 11 64 if ARCH_SHMOBILE
	default "9" if SA1111
	default "11"
	help
	  The kernel memory allocator divides physically contiguous memory
	  blocks into "zones", where each zone is a power of two number of
	  pages.  This option selects the largest power of two that the kernel
	  keeps in the memory allocator.  If you need to allocate very large
	  blocks of physically contiguous memory, then you may need to
	  increase this value.

	  This config option is actually maximum order plus one. For example,
	  a value of 11 means that the largest free memory block is 2^10 pages.

L
Linus Torvalds 已提交
1774 1775
config ALIGNMENT_TRAP
	bool
1776
	depends on CPU_CP15_MMU
L
Linus Torvalds 已提交
1777
	default y if !ARCH_EBSA110
1778
	select HAVE_PROC_CPU if PROC_FS
L
Linus Torvalds 已提交
1779
	help
1780
	  ARM processors cannot fetch/store information which is not
L
Linus Torvalds 已提交
1781 1782 1783 1784 1785 1786 1787
	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
	  address divisible by 4. On 32-bit ARM processors, these non-aligned
	  fetch/store instructions will be emulated in software if you say
	  here, which has a severe performance impact. This is necessary for
	  correct operation of some network protocols. With an IP-only
	  configuration it is safe to say N, otherwise say Y.

1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
config UACCESS_WITH_MEMCPY
	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
	depends on MMU && EXPERIMENTAL
	default y if CPU_FEROCEON
	help
	  Implement faster copy_to_user and clear_user methods for CPU
	  cores where a 8-word STM instruction give significantly higher
	  memory write throughput than a sequence of individual 32bit stores.

	  A possible side effect is a slight increase in scheduling latency
	  between threads sharing the same address space if they invoke
	  such copy operations with large buffers.

	  However, if the CPU data cache is using a write-allocate mode,
	  this option is unlikely to provide any performance gain.

N
Nicolas Pitre 已提交
1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817
config SECCOMP
	bool
	prompt "Enable seccomp to safely compute untrusted bytecode"
	---help---
	  This kernel feature is useful for number crunching applications
	  that may need to compute untrusted bytecode during their
	  execution. By using pipes or other transports made available to
	  the process as file descriptors supporting the read/write
	  syscalls, it's possible to isolate those applications in
	  their own address space using seccomp. Once seccomp is
	  enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
	  and the task is only allowed to execute a few safe syscalls
	  defined by each seccomp mode.

1818 1819
config CC_STACKPROTECTOR
	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1820
	depends on EXPERIMENTAL
1821 1822 1823 1824 1825 1826 1827 1828 1829 1830
	help
	  This option turns on the -fstack-protector GCC feature. This
	  feature puts, at the beginning of functions, a canary value on
	  the stack just before the return address, and validates
	  the value just before actually returning.  Stack based buffer
	  overflows (that need to overwrite this return address) now also
	  overwrite the canary, which gets detected and the attack is then
	  neutralized via a kernel panic.
	  This feature requires gcc version 4.2 or above.

1831 1832 1833 1834 1835 1836
config DEPRECATED_PARAM_STRUCT
	bool "Provide old way to pass kernel parameters"
	help
	  This was deprecated in 2001 and announced to live on for 5 years.
	  Some old boot loaders still use this way.

1837 1838 1839 1840 1841 1842 1843 1844 1845 1846
config XEN_DOM0
	def_bool y
	depends on XEN

config XEN
	bool "Xen guest support on ARM (EXPERIMENTAL)"
	depends on EXPERIMENTAL && ARM && OF
	help
	  Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.

L
Linus Torvalds 已提交
1847 1848 1849 1850
endmenu

menu "Boot options"

G
Grant Likely 已提交
1851 1852 1853 1854
config USE_OF
	bool "Flattened Device Tree support"
	select OF
	select OF_EARLY_FLATTREE
1855
	select IRQ_DOMAIN
G
Grant Likely 已提交
1856 1857 1858
	help
	  Include support for flattened device tree machine descriptions.

L
Linus Torvalds 已提交
1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875
# Compressed boot loader in ROM.  Yes, we really want to ask about
# TEXT and BSS so we preserve their values in the config files.
config ZBOOT_ROM_TEXT
	hex "Compressed ROM boot loader base address"
	default "0"
	help
	  The physical address at which the ROM-able zImage is to be
	  placed in the target.  Platforms which normally make use of
	  ROM-able zImage formats normally set this to a suitable
	  value in their defconfig file.

	  If ZBOOT_ROM is not enabled, this has no effect.

config ZBOOT_ROM_BSS
	hex "Compressed ROM boot loader BSS address"
	default "0"
	help
1876 1877 1878 1879 1880 1881
	  The base address of an area of read/write memory in the target
	  for the ROM-able zImage which must be available while the
	  decompressor is running. It must be large enough to hold the
	  entire decompressed kernel plus an additional 128 KiB.
	  Platforms which normally make use of ROM-able zImage formats
	  normally set this to a suitable value in their defconfig file.
L
Linus Torvalds 已提交
1882 1883 1884 1885 1886 1887 1888 1889 1890 1891

	  If ZBOOT_ROM is not enabled, this has no effect.

config ZBOOT_ROM
	bool "Compressed boot loader in ROM/flash"
	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
	help
	  Say Y here if you intend to execute your compressed kernel image
	  (zImage) directly from ROM or flash.  If unsure, say N.

1892 1893 1894 1895 1896 1897
choice
	prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
	depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
	default ZBOOT_ROM_NONE
	help
	  Include experimental SD/MMC loading code in the ROM-able zImage.
M
Masanari Iida 已提交
1898
	  With this enabled it is possible to write the ROM-able zImage
1899 1900
	  kernel image to an MMC or SD card and boot the kernel straight
	  from the reset vector. At reset the processor Mask ROM will load
M
Masanari Iida 已提交
1901
	  the first part of the ROM-able zImage which in turn loads the
1902 1903 1904 1905 1906 1907 1908
	  rest the kernel image to RAM.

config ZBOOT_ROM_NONE
	bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
	help
	  Do not load image from SD or MMC

1909 1910 1911
config ZBOOT_ROM_MMCIF
	bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
	help
1912 1913 1914 1915 1916 1917 1918 1919
	  Load image from MMCIF hardware block.

config ZBOOT_ROM_SH_MOBILE_SDHI
	bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
	help
	  Load image from SDHI hardware block

endchoice
1920

1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940
config ARM_APPENDED_DTB
	bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
	depends on OF && !ZBOOT_ROM && EXPERIMENTAL
	help
	  With this option, the boot code will look for a device tree binary
	  (DTB) appended to zImage
	  (e.g. cat zImage <filename>.dtb > zImage_w_dtb).

	  This is meant as a backward compatibility convenience for those
	  systems with a bootloader that can't be upgraded to accommodate
	  the documented boot protocol using a device tree.

	  Beware that there is very little in terms of protection against
	  this option being confused by leftover garbage in memory that might
	  look like a DTB header after a reboot if no actual DTB is appended
	  to zImage.  Do not leave this option active in a production kernel
	  if you don't intend to always append a DTB.  Proper passing of the
	  location into r2 of a bootloader provided DTB is always preferable
	  to this option.

1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952
config ARM_ATAG_DTB_COMPAT
	bool "Supplement the appended DTB with traditional ATAG information"
	depends on ARM_APPENDED_DTB
	help
	  Some old bootloaders can't be updated to a DTB capable one, yet
	  they provide ATAGs with memory configuration, the ramdisk address,
	  the kernel cmdline string, etc.  Such information is dynamically
	  provided by the bootloader and can't always be stored in a static
	  DTB.  To allow a device tree enabled kernel to be used with such
	  bootloaders, this option allows zImage to extract the information
	  from the ATAG list and store it at run time into the appended DTB.

1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
choice
	prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
	default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER

config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
	bool "Use bootloader kernel arguments if available"
	help
	  Uses the command-line options passed by the boot loader instead of
	  the device tree bootargs property. If the boot loader doesn't provide
	  any, the device tree bootargs property will be used.

config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
	bool "Extend with bootloader kernel arguments"
	help
	  The command-line arguments provided by the boot loader will be
	  appended to the the device tree bootargs property.

endchoice

L
Linus Torvalds 已提交
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981
config CMDLINE
	string "Default kernel command string"
	default ""
	help
	  On some architectures (EBSA110 and CATS), there is currently no way
	  for the boot loader to pass arguments to the kernel. For these
	  architectures, you should supply some command-line options at build
	  time by entering them here. As a minimum, you should specify the
	  memory size and the root device (e.g., mem=64M root=/dev/nfs).

1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998
choice
	prompt "Kernel command line type" if CMDLINE != ""
	default CMDLINE_FROM_BOOTLOADER

config CMDLINE_FROM_BOOTLOADER
	bool "Use bootloader kernel arguments if available"
	help
	  Uses the command-line options passed by the boot loader. If
	  the boot loader doesn't provide any, the default kernel command
	  string provided in CMDLINE will be used.

config CMDLINE_EXTEND
	bool "Extend bootloader kernel arguments"
	help
	  The command-line arguments provided by the boot loader will be
	  appended to the default kernel command string.

1999 2000 2001 2002 2003 2004 2005
config CMDLINE_FORCE
	bool "Always use the default kernel command string"
	help
	  Always use the default kernel command string, even if the boot
	  loader passes other arguments to the kernel.
	  This is useful if you cannot or don't want to change the
	  command-line options your boot loader passes to the kernel.
2006
endchoice
2007

L
Linus Torvalds 已提交
2008 2009
config XIP_KERNEL
	bool "Kernel Execute-In-Place from ROM"
R
Rob Herring 已提交
2010
	depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
L
Linus Torvalds 已提交
2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037
	help
	  Execute-In-Place allows the kernel to run from non-volatile storage
	  directly addressable by the CPU, such as NOR flash. This saves RAM
	  space since the text section of the kernel is not loaded from flash
	  to RAM.  Read-write sections, such as the data section and stack,
	  are still copied to RAM.  The XIP kernel is not compressed since
	  it has to run directly from flash, so it will take more space to
	  store it.  The flash address used to link the kernel object files,
	  and for storing it, is configuration dependent. Therefore, if you
	  say Y here, you must know the proper physical address where to
	  store the kernel image depending on your own flash memory usage.

	  Also note that the make target becomes "make xipImage" rather than
	  "make zImage" or "make Image".  The final kernel binary to put in
	  ROM memory will be arch/arm/boot/xipImage.

	  If unsure, say N.

config XIP_PHYS_ADDR
	hex "XIP Kernel Physical Location"
	depends on XIP_KERNEL
	default "0x00080000"
	help
	  This is the physical address in your flash memory the kernel will
	  be linked for and stored to.  This address is dependent on your
	  own flash usage.

R
Richard Purdie 已提交
2038 2039
config KEXEC
	bool "Kexec system call (EXPERIMENTAL)"
2040
	depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
R
Richard Purdie 已提交
2041 2042 2043
	help
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
M
Matt LaPlante 已提交
2044
	  but it is independent of the system firmware.   And like a reboot
R
Richard Purdie 已提交
2045 2046 2047 2048 2049 2050 2051
	  you can start any kernel with it, not just Linux.

	  It is an ongoing process to be certain the hardware in a machine
	  is properly shutdown, so do not be surprised if this code does not
	  initially work for you.  It may help to enable device hotplugging
	  support.

2052 2053
config ATAGS_PROC
	bool "Export atags in procfs"
2054 2055
	depends on KEXEC
	default y
2056 2057 2058 2059
	help
	  Should the atags used to boot the kernel be exported in an "atags"
	  file in procfs. Useful with kexec.

2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072
config CRASH_DUMP
	bool "Build kdump crash kernel (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	help
	  Generate crash dump after being started by kexec. This should
	  be normally only set in special crash dump kernels which are
	  loaded in the main kernel with kexec-tools into a specially
	  reserved region and then later executed after a crash by
	  kdump/kexec. The crash dump kernel must be compiled to a
	  memory address not used by the main kernel

	  For more details see Documentation/kdump/kdump.txt

2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
config AUTO_ZRELADDR
	bool "Auto calculation of the decompressed kernel image address"
	depends on !ZBOOT_ROM && !ARCH_U300
	help
	  ZRELADDR is the physical address where the decompressed kernel
	  image will be placed. If AUTO_ZRELADDR is selected, the address
	  will be determined at run-time by masking the current IP with
	  0xf8000000. This assumes the zImage being placed in the first 128MB
	  from start of memory.

L
Linus Torvalds 已提交
2083 2084
endmenu

2085
menu "CPU Power Management"
L
Linus Torvalds 已提交
2086

2087
if ARCH_HAS_CPUFREQ
L
Linus Torvalds 已提交
2088 2089 2090

source "drivers/cpufreq/Kconfig"

Y
Yong Shen 已提交
2091 2092 2093
config CPU_FREQ_IMX
	tristate "CPUfreq driver for i.MX CPUs"
	depends on ARCH_MXC && CPU_FREQ
2094
	select CPU_FREQ_TABLE
Y
Yong Shen 已提交
2095 2096 2097
	help
	  This enables the CPUfreq driver for i.MX CPUs.

L
Linus Torvalds 已提交
2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114
config CPU_FREQ_SA1100
	bool

config CPU_FREQ_SA1110
	bool

config CPU_FREQ_INTEGRATOR
	tristate "CPUfreq driver for ARM Integrator CPUs"
	depends on ARCH_INTEGRATOR && CPU_FREQ
	default y
	help
	  This enables the CPUfreq driver for ARM Integrator CPUs.

	  For details, take a look at <file:Documentation/cpu-freq>.

	  If in doubt, say Y.

R
Russell King 已提交
2115 2116 2117 2118
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
2119
	select CPU_FREQ_TABLE
R
Russell King 已提交
2120 2121
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

B
Ben Dooks 已提交
2122 2123 2124 2125 2126 2127
config CPU_FREQ_S3C
	bool
	help
	  Internal configuration node for common cpufreq on Samsung SoC

config CPU_FREQ_S3C24XX
2128
	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
2129
	depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
B
Ben Dooks 已提交
2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
	select CPU_FREQ_S3C
	help
	  This enables the CPUfreq driver for the Samsung S3C24XX family
	  of CPUs.

	  For details, take a look at <file:Documentation/cpu-freq>.

	  If in doubt, say N.

config CPU_FREQ_S3C24XX_PLL
2140
	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
B
Ben Dooks 已提交
2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161
	depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
	help
	  Compile in support for changing the PLL frequency from the
	  S3C24XX series CPUfreq driver. The PLL takes time to settle
	  after a frequency change, so by default it is not enabled.

	  This also means that the PLL tables for the selected CPU(s) will
	  be built which may increase the size of the kernel image.

config CPU_FREQ_S3C24XX_DEBUG
	bool "Debug CPUfreq Samsung driver core"
	depends on CPU_FREQ_S3C24XX
	help
	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core

config CPU_FREQ_S3C24XX_IODEBUG
	bool "Debug CPUfreq Samsung driver IO timing"
	depends on CPU_FREQ_S3C24XX
	help
	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core

2162 2163 2164 2165 2166 2167
config CPU_FREQ_S3C24XX_DEBUGFS
	bool "Export debugfs for CPUFreq"
	depends on CPU_FREQ_S3C24XX && DEBUG_FS
	help
	  Export status information via debugfs.

L
Linus Torvalds 已提交
2168 2169
endif

2170 2171 2172 2173
source "drivers/cpuidle/Kconfig"

endmenu

L
Linus Torvalds 已提交
2174 2175 2176 2177 2178 2179
menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
2180
	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
L
Linus Torvalds 已提交
2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191
	---help---
	  Say Y to include the NWFPE floating point emulator in the kernel.
	  This is necessary to run most binaries. Linux does not currently
	  support floating point hardware so you need to say Y here even if
	  your machine has an FPA or floating point co-processor podule.

	  You may say N here if you are going to load the Acorn FPEmulator
	  early in the bootup.

config FPE_NWFPE_XP
	bool "Support extended precision"
2192
	depends on FPE_NWFPE
L
Linus Torvalds 已提交
2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203
	help
	  Say Y to include 80-bit support in the kernel floating-point
	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
	  Note that gcc does not generate 80-bit operations by default,
	  so in most cases this option only enlarges the size of the
	  floating point emulator without any good reason.

	  You almost surely want to say N here.

config FPE_FASTFPE
	bool "FastFPE math emulation (EXPERIMENTAL)"
2204
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
L
Linus Torvalds 已提交
2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217
	---help---
	  Say Y here to include the FAST floating point emulator in the kernel.
	  This is an experimental much faster emulator which now also has full
	  precision for the mantissa.  It does not support any exceptions.
	  It is very simple, and approximately 3-6 times faster than NWFPE.

	  It should be sufficient for most programs.  It may be not suitable
	  for scientific calculations, but you have to check this for yourself.
	  If you do not feel you need a faster FP emulation you should better
	  choose NWFPE.

config VFP
	bool "VFP-format floating point maths"
2218
	depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
L
Linus Torvalds 已提交
2219 2220 2221 2222 2223 2224 2225 2226 2227
	help
	  Say Y to include VFP support code in the kernel. This is needed
	  if your hardware includes a VFP unit.

	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
	  release notes and additional status information.

	  Say N if your target does not have VFP hardware.

2228 2229 2230 2231 2232
config VFPv3
	bool
	depends on VFP
	default y if CPU_V7

2233 2234 2235 2236 2237 2238 2239
config NEON
	bool "Advanced SIMD (NEON) Extension support"
	depends on VFPv3 && CPU_V7
	help
	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
	  Extension.

L
Linus Torvalds 已提交
2240 2241 2242 2243 2244 2245 2246 2247
endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
2248
	depends on !AEABI
L
Linus Torvalds 已提交
2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259
	help
	  Say Y here to include the kernel code necessary if you want to run
	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
	  experimental; if this sounds frightening, say N and sleep in peace.
	  You can also say M here to compile this support as a module (which
	  will be called arthur).

endmenu

menu "Power management options"

R
Russell King 已提交
2260
source "kernel/power/Kconfig"
L
Linus Torvalds 已提交
2261

J
Johannes Berg 已提交
2262
config ARCH_SUSPEND_POSSIBLE
2263
	depends on !ARCH_S5PC100
2264
	depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
2265
		CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
J
Johannes Berg 已提交
2266 2267
	def_bool y

2268 2269 2270
config ARM_CPU_SUSPEND
	def_bool PM_SLEEP

L
Linus Torvalds 已提交
2271 2272
endmenu

2273 2274
source "net/Kconfig"

2275
source "drivers/Kconfig"
L
Linus Torvalds 已提交
2276 2277 2278 2279 2280 2281 2282 2283 2284 2285

source "fs/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"