Kconfig 64.8 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3
config ARM
	bool
	default y
4
	select HAVE_AOUT
5
	select HAVE_DMA_API_DEBUG
6
	select HAVE_IDE if PCI || ISA || PCMCIA
R
Russell King 已提交
7
	select HAVE_MEMBLOCK
8
	select RTC_LIB
9
	select SYS_SUPPORTS_APM_EMULATION
10
	select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
11
	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
12
	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
J
Jason Wessel 已提交
13
	select HAVE_ARCH_KGDB
14
	select HAVE_KPROBES if !XIP_KERNEL
15
	select HAVE_KRETPROBES if (HAVE_KPROBES)
16
	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
17 18
	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
19
	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
20
	select ARCH_BINFMT_ELF_RANDOMIZE_PIE
21
	select HAVE_GENERIC_DMA_COHERENT
22 23
	select HAVE_KERNEL_GZIP
	select HAVE_KERNEL_LZO
24
	select HAVE_KERNEL_LZMA
25
	select HAVE_KERNEL_XZ
26
	select HAVE_IRQ_WORK
27 28
	select HAVE_PERF_EVENTS
	select PERF_USE_VMALLOC
29
	select HAVE_REGS_AND_STACK_ACCESS_API
30
	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
31
	select HAVE_C_RECORDMCOUNT
32
	select HAVE_GENERIC_HARDIRQS
33
	select GENERIC_IRQ_SHOW
34
	select CPU_PM if (SUSPEND || CPU_IDLE)
35
	select GENERIC_PCI_IOMAP
36
	select HAVE_BPF_JIT if NET
L
Linus Torvalds 已提交
37 38
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
39
	  licensed by ARM Ltd and targeted at embedded applications and
L
Linus Torvalds 已提交
40
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
41
	  manufactured, but legacy ARM-based PC hardware remains popular in
L
Linus Torvalds 已提交
42 43 44
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

45 46 47
config ARM_HAS_SG_CHAIN
	bool

R
Russell King 已提交
48 49 50
config HAVE_PWM
	bool

51 52 53
config MIGHT_HAVE_PCI
	bool

54 55 56
config SYS_SUPPORTS_APM_EMULATION
	bool

D
David Brownell 已提交
57 58 59
config GENERIC_GPIO
	bool

60 61 62
config ARCH_USES_GETTIMEOFFSET
	bool
	default n
63

64 65 66
config GENERIC_CLOCKEVENTS
	bool

67 68 69
config GENERIC_CLOCKEVENTS_BROADCAST
	bool
	depends on GENERIC_CLOCKEVENTS
70
	default y if SMP
71

72 73 74 75
config KTIME_SCALAR
	bool
	default y

76 77 78 79
config HAVE_TCM
	bool
	select GENERIC_ALLOCATOR

80 81 82
config HAVE_PROC_CPU
	bool

A
Al Viro 已提交
83 84 85
config NO_IOPORT
	bool

L
Linus Torvalds 已提交
86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
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

config MCA
	bool
	help
	  MicroChannel Architecture is found in some IBM PS/2 machines and
	  laptops.  It is a bus system similar to PCI or ISA. See
	  <file:Documentation/mca.txt> (and especially the web page given
	  there) before attempting to build an MCA bus kernel.

112 113 114 115
config STACKTRACE_SUPPORT
	bool
	default y

N
Nicolas Pitre 已提交
116 117 118 119 120
config HAVE_LATENCYTOP_SUPPORT
	bool
	depends on !SMP
	default y

121 122 123 124
config LOCKDEP_SUPPORT
	bool
	default y

R
Russell King 已提交
125 126 127 128
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

129 130 131 132 133 134 135 136
config HARDIRQS_SW_RESEND
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

N
Nick Piggin 已提交
137 138 139 140 141
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

L
Linus Torvalds 已提交
142 143 144 145 146 147 148
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

149 150 151 152 153 154
config ARCH_HAS_ILOG2_U32
	bool

config ARCH_HAS_ILOG2_U64
	bool

155 156 157 158 159 160 161
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.

162 163 164
config ARCH_HAS_CPU_IDLE_WAIT
       def_bool y

165 166 167 168
config GENERIC_HWEIGHT
	bool
	default y

L
Linus Torvalds 已提交
169 170 171 172
config GENERIC_CALIBRATE_DELAY
	bool
	default y

173 174 175
config ARCH_MAY_HAVE_PC_FDC
	bool

176 177 178
config ZONE_DMA
	bool

179 180 181
config NEED_DMA_MAP_STATE
       def_bool y

182 183 184
config ARCH_HAS_DMA_SET_COHERENT_MASK
	bool

L
Linus Torvalds 已提交
185 186 187 188 189 190
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

191 192 193
config NEED_RET_TO_USER
	bool

194 195 196
config ARCH_MTD_XIP
	bool

197 198
config VECTORS_BASE
	hex
199
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
200 201 202 203 204
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

205
config ARM_PATCH_PHYS_VIRT
206 207
	bool "Patch physical to virtual translations at runtime" if EMBEDDED
	default y
N
Nicolas Pitre 已提交
208
	depends on !XIP_KERNEL && MMU
209 210
	depends on !ARCH_REALVIEW || !SPARSEMEM
	help
211 212 213
	  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.
214

215
	  This can only be used with non-XIP MMU kernels where the base
216
	  of physical memory is at a 16MB boundary.
217

218 219 220
	  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.
221

222 223 224 225 226 227 228
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.

229
config NEED_MACH_MEMORY_H
230 231
	bool
	help
232 233 234
	  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.
235

236
config PHYS_OFFSET
237
	hex "Physical address of main memory" if MMU
238
	depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
239
	default DRAM_BASE if !MMU
240
	help
241 242
	  Please provide the physical address corresponding to the
	  location of main memory in your system.
243

244 245 246 247
config GENERIC_BUG
	def_bool y
	depends on BUG

L
Linus Torvalds 已提交
248 249
source "init/Kconfig"

250 251
source "kernel/Kconfig.freezer"

L
Linus Torvalds 已提交
252 253
menu "System Type"

254 255 256 257 258 259 260
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'.

261 262 263 264
#
# 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
265 266
choice
	prompt "ARM system type"
267
	default ARCH_VERSATILE
L
Linus Torvalds 已提交
268

269 270 271
config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
272
	select ARCH_HAS_CPUFREQ
273
	select CLKDEV_LOOKUP
274
	select HAVE_MACH_CLKDEV
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_IO_H
281
	select NEED_MACH_MEMORY_H
282
	select SPARSE_IRQ
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
	select CLKDEV_LOOKUP
290
	select HAVE_MACH_CLKDEV
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_CLCD
313
	select PLAT_VERSATILE_FPGA_IRQ
314
	select ARM_TIMER_SP804
315 316 317
	help
	  This enables support for ARM Ltd Versatile board.

318 319 320 321 322
config ARCH_VEXPRESS
	bool "ARM Ltd. Versatile Express family"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_TIMER_SP804
323
	select CLKDEV_LOOKUP
324
	select HAVE_MACH_CLKDEV
325 326
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
327
	select HAVE_PATA_PLATFORM
328
	select ICST
329
	select NO_IOPORT
330
	select PLAT_VERSATILE
331
	select PLAT_VERSATILE_CLCD
332 333 334
	help
	  This enables support for the ARM Ltd Versatile Express boards.

335 336
config ARCH_AT91
	bool "Atmel AT91"
337
	select ARCH_REQUIRE_GPIOLIB
D
David Brownell 已提交
338
	select HAVE_CLK
339
	select CLKDEV_LOOKUP
340
	select IRQ_DOMAIN
341
	help
342
	  This enables support for systems based on the Atmel AT91RM9200,
343
	  AT91SAM9 processors.
344

345 346 347 348 349
config ARCH_BCMRING
	bool "Broadcom BCMRING"
	depends on MMU
	select CPU_V6
	select ARM_AMBA
350
	select ARM_TIMER_SP804
351
	select CLKDEV_LOOKUP
352 353 354 355 356
	select GENERIC_CLOCKEVENTS
	select ARCH_WANT_OPTIONAL_GPIOLIB
	help
	  Support for Broadcom's BCMRing platform.

357 358 359 360 361 362
config ARCH_HIGHBANK
	bool "Calxeda Highbank-based"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_GIC
	select ARM_TIMER_SP804
363
	select CACHE_L2X0
364 365 366 367
	select CLKDEV_LOOKUP
	select CPU_V7
	select GENERIC_CLOCKEVENTS
	select HAVE_ARM_SCU
368
	select HAVE_SMP
369
	select SPARSE_IRQ
370 371 372 373
	select USE_OF
	help
	  Support for the Calxeda Highbank SoC based boards.

L
Linus Torvalds 已提交
374
config ARCH_CLPS711X
375
	bool "Cirrus Logic CLPS711x/EP721x-based"
376
	select CPU_ARM720T
377
	select ARCH_USES_GETTIMEOFFSET
378
	select NEED_MACH_MEMORY_H
379 380
	help
	  Support for Cirrus Logic 711x/721x based boards.
L
Linus Torvalds 已提交
381

382 383
config ARCH_CNS3XXX
	bool "Cavium Networks CNS3XXX family"
I
Imre Kaloz 已提交
384
	select CPU_V6K
385 386
	select GENERIC_CLOCKEVENTS
	select ARM_GIC
387
	select MIGHT_HAVE_CACHE_L2X0
388
	select MIGHT_HAVE_PCI
389
	select PCI_DOMAINS if PCI
390 391 392
	help
	  Support for Cavium Networks CNS3XXX platform.

393 394 395 396
config ARCH_GEMINI
	bool "Cortina Systems Gemini"
	select CPU_FA526
	select ARCH_REQUIRE_GPIOLIB
397
	select ARCH_USES_GETTIMEOFFSET
398 399 400
	help
	  Support for the Cortina Systems Gemini family SoCs

A
Arnd Bergmann 已提交
401 402 403 404 405 406 407
config ARCH_PRIMA2
	bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
	select CPU_V7
	select NO_IOPORT
	select GENERIC_CLOCKEVENTS
	select CLKDEV_LOOKUP
	select GENERIC_IRQ_CHIP
408
	select MIGHT_HAVE_CACHE_L2X0
A
Arnd Bergmann 已提交
409 410 411 412 413
	select USE_OF
	select ZONE_DMA
	help
          Support for CSR SiRFSoC ARM Cortex A9 Platform

L
Linus Torvalds 已提交
414 415
config ARCH_EBSA110
	bool "EBSA-110"
416
	select CPU_SA110
417
	select ISA
418
	select NO_IOPORT
419
	select ARCH_USES_GETTIMEOFFSET
420
	select NEED_MACH_IO_H
421
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
422 423
	help
	  This is an evaluation board for the StrongARM processor available
424
	  from Digital. It has limited hardware on-board, including an
L
Linus Torvalds 已提交
425 426 427
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

428 429
config ARCH_EP93XX
	bool "EP93xx-based"
430
	select CPU_ARM920T
431 432
	select ARM_AMBA
	select ARM_VIC
433
	select CLKDEV_LOOKUP
M
Michael Buesch 已提交
434
	select ARCH_REQUIRE_GPIOLIB
435
	select ARCH_HAS_HOLES_MEMORYMODEL
436
	select ARCH_USES_GETTIMEOFFSET
437
	select NEED_MACH_MEMORY_H
438 439 440
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

L
Linus Torvalds 已提交
441 442
config ARCH_FOOTBRIDGE
	bool "FootBridge"
443
	select CPU_SA110
L
Linus Torvalds 已提交
444
	select FOOTBRIDGE
445
	select GENERIC_CLOCKEVENTS
446
	select HAVE_IDE
447
	select NEED_MACH_IO_H
448
	select NEED_MACH_MEMORY_H
449 450 451
	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
452

453 454 455 456
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
457
	select CLKDEV_LOOKUP
458
	select CLKSRC_MMIO
459
	select GENERIC_IRQ_CHIP
460
	select MULTI_IRQ_HANDLER
461 462 463
	help
	  Support for Freescale MXC/iMX-based family of processors

464 465 466 467
config ARCH_MXS
	bool "Freescale MXS-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
468
	select CLKDEV_LOOKUP
469
	select CLKSRC_MMIO
470
	select HAVE_CLK_PREPARE
471 472 473
	help
	  Support for Freescale MXS-based family of processors

474 475
config ARCH_NETX
	bool "Hilscher NetX based"
476
	select CLKSRC_MMIO
477
	select CPU_ARM926T
478
	select ARM_VIC
479
	select GENERIC_CLOCKEVENTS
480
	help
481 482 483 484
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
485
	select CPU_ARM720T
486
	select ISA_DMA_API
487
	select ARCH_USES_GETTIMEOFFSET
488 489 490
	help
	  This enables support for systems based on the Hynix HMS720x

491 492 493
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
494
	select CPU_XSC3
495 496 497
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
498
	select VMSPLIT_1G
499
	select NEED_MACH_IO_H
500
	select NEED_MACH_MEMORY_H
501
	select NEED_RET_TO_USER
502 503 504
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

505 506
config ARCH_IOP32X
	bool "IOP32x-based"
507
	depends on MMU
508
	select CPU_XSCALE
509
	select NEED_MACH_IO_H
510
	select NEED_RET_TO_USER
511
	select PLAT_IOP
512
	select PCI
513
	select ARCH_REQUIRE_GPIOLIB
514
	help
515 516 517 518 519 520
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
521
	select CPU_XSCALE
522
	select NEED_MACH_IO_H
523
	select NEED_RET_TO_USER
524
	select PLAT_IOP
525
	select PCI
526
	select ARCH_REQUIRE_GPIOLIB
527 528
	help
	  Support for Intel's IOP33X (XScale) family of processors.
L
Linus Torvalds 已提交
529

530 531
config ARCH_IXP23XX
 	bool "IXP23XX-based"
532
	depends on MMU
533
	select CPU_XSC3
534
 	select PCI
535
	select ARCH_USES_GETTIMEOFFSET
536
	select NEED_MACH_IO_H
537
	select NEED_MACH_MEMORY_H
538
	help
539
	  Support for Intel's IXP23xx (XScale) family of processors.
L
Linus Torvalds 已提交
540 541 542

config ARCH_IXP2000
	bool "IXP2400/2800-based"
543
	depends on MMU
544
	select CPU_XSCALE
545
	select PCI
546
	select ARCH_USES_GETTIMEOFFSET
547
	select NEED_MACH_IO_H
548
	select NEED_MACH_MEMORY_H
549 550
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
L
Linus Torvalds 已提交
551

552 553
config ARCH_IXP4XX
	bool "IXP4xx-based"
554
	depends on MMU
555
	select ARCH_HAS_DMA_SET_COHERENT_MASK
556
	select CLKSRC_MMIO
557
	select CPU_XSCALE
558
	select GENERIC_GPIO
559
	select GENERIC_CLOCKEVENTS
560
	select MIGHT_HAVE_PCI
561
	select NEED_MACH_IO_H
R
Russell King 已提交
562
	select DMABOUNCE if PCI
563
	help
564
	  Support for Intel's IXP4XX (XScale) family of processors.
565

566 567
config ARCH_DOVE
	bool "Marvell Dove"
568
	select CPU_V7
569 570 571
	select PCI
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
572
	select NEED_MACH_IO_H
573 574 575 576
	select PLAT_ORION
	help
	  Support for the Marvell Dove SoC 88AP510

577 578
config ARCH_KIRKWOOD
	bool "Marvell Kirkwood"
579
	select CPU_FEROCEON
580
	select PCI
581
	select ARCH_REQUIRE_GPIOLIB
582
	select GENERIC_CLOCKEVENTS
583
	select NEED_MACH_IO_H
584 585 586 587 588
	select PLAT_ORION
	help
	  Support for the following Marvell Kirkwood series SoCs:
	  88F6180, 88F6192 and 88F6281.

589 590
config ARCH_LPC32XX
	bool "NXP LPC32XX"
591
	select CLKSRC_MMIO
592 593 594 595 596
	select CPU_ARM926T
	select ARCH_REQUIRE_GPIOLIB
	select HAVE_IDE
	select ARM_AMBA
	select USB_ARCH_HAS_OHCI
597
	select CLKDEV_LOOKUP
598 599 600 601
	select GENERIC_CLOCKEVENTS
	help
	  Support for the NXP LPC32XX family of processors

602 603
config ARCH_MV78XX0
	bool "Marvell MV78xx0"
604
	select CPU_FEROCEON
605
	select PCI
606
	select ARCH_REQUIRE_GPIOLIB
607
	select GENERIC_CLOCKEVENTS
608
	select NEED_MACH_IO_H
609 610 611 612 613
	select PLAT_ORION
	help
	  Support for the following Marvell MV78xx0 series SoCs:
	  MV781x0, MV782x0.

614
config ARCH_ORION5X
615 616
	bool "Marvell Orion"
	depends on MMU
617
	select CPU_FEROCEON
T
Tzachi Perelstein 已提交
618
	select PCI
619
	select ARCH_REQUIRE_GPIOLIB
620
	select GENERIC_CLOCKEVENTS
L
Lennert Buytenhek 已提交
621
	select PLAT_ORION
622
	help
623
	  Support for the following Marvell Orion 5x series SoCs:
624
	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
625
	  Orion-2 (5281), Orion-1-90 (6183).
626

627
config ARCH_MMP
628
	bool "Marvell PXA168/910/MMP2"
629 630
	depends on MMU
	select ARCH_REQUIRE_GPIOLIB
631
	select CLKDEV_LOOKUP
632
	select GENERIC_CLOCKEVENTS
633
	select GPIO_PXA
634 635
	select TICK_ONESHOT
	select PLAT_PXA
H
Haojian Zhuang 已提交
636
	select SPARSE_IRQ
L
Leo Yan 已提交
637
	select GENERIC_ALLOCATOR
638
	help
639
	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
640 641 642 643

config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
	select CPU_ARM922T
644
	select ARCH_REQUIRE_GPIOLIB
645
	select ARCH_USES_GETTIMEOFFSET
646
	select NEED_MACH_MEMORY_H
647 648 649 650 651 652 653
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

config ARCH_W90X900
	bool "Nuvoton W90X900 CPU"
	select CPU_ARM926T
654
	select ARCH_REQUIRE_GPIOLIB
655
	select CLKDEV_LOOKUP
656
	select CLKSRC_MMIO
657
	select GENERIC_CLOCKEVENTS
658
	help
659 660 661 662 663 664 665
	  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>
666

667 668
config ARCH_TEGRA
	bool "NVIDIA Tegra"
R
Russell King 已提交
669
	select CLKDEV_LOOKUP
670
	select CLKSRC_MMIO
671 672 673
	select GENERIC_CLOCKEVENTS
	select GENERIC_GPIO
	select HAVE_CLK
674
	select HAVE_SMP
675
	select MIGHT_HAVE_CACHE_L2X0
676
	select NEED_MACH_IO_H if PCI
C
Colin Cross 已提交
677
	select ARCH_HAS_CPUFREQ
678 679 680 681
	help
	  This enables support for NVIDIA Tegra based systems (Tegra APX,
	  Tegra 6xx and Tegra 2 series).

682 683 684 685 686 687 688 689 690 691 692
config ARCH_PICOXCELL
	bool "Picochip picoXcell"
	select ARCH_REQUIRE_GPIOLIB
	select ARM_PATCH_PHYS_VIRT
	select ARM_VIC
	select CPU_V6K
	select DW_APB_TIMER
	select GENERIC_CLOCKEVENTS
	select GENERIC_GPIO
	select HAVE_TCM
	select NO_IOPORT
693
	select SPARSE_IRQ
694 695 696 697 698 699
	select USE_OF
	help
	  This enables support for systems based on the Picochip picoXcell
	  family of Femtocell devices.  The picoxcell support requires device tree
	  for all boards.

700 701
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
702
	select CPU_ARM926T
703
	select CLKDEV_LOOKUP
704
	select ARCH_USES_GETTIMEOFFSET
705 706 707
	help
	  This enables support for Philips PNX4008 mobile platform.

L
Linus Torvalds 已提交
708
config ARCH_PXA
E
eric miao 已提交
709
	bool "PXA2xx/PXA3xx-based"
710
	depends on MMU
711
	select ARCH_MTD_XIP
712
	select ARCH_HAS_CPUFREQ
713
	select CLKDEV_LOOKUP
714
	select CLKSRC_MMIO
M
Michael Buesch 已提交
715
	select ARCH_REQUIRE_GPIOLIB
716
	select GENERIC_CLOCKEVENTS
717
	select GPIO_PXA
718
	select TICK_ONESHOT
719
	select PLAT_PXA
720
	select SPARSE_IRQ
E
Eric Miao 已提交
721
	select AUTO_ZRELADDR
722
	select MULTI_IRQ_HANDLER
723
	select ARM_CPU_SUSPEND if PM
724
	select HAVE_IDE
725
	help
E
eric miao 已提交
726
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
L
Linus Torvalds 已提交
727

728 729
config ARCH_MSM
	bool "Qualcomm MSM"
730
	select HAVE_CLK
731
	select GENERIC_CLOCKEVENTS
P
Pavel Machek 已提交
732
	select ARCH_REQUIRE_GPIOLIB
S
Stephen Boyd 已提交
733
	select CLKDEV_LOOKUP
734
	help
735 736 737 738 739
	  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).
740

741
config ARCH_SHMOBILE
742 743
	bool "Renesas SH-Mobile / R-Mobile"
	select HAVE_CLK
P
Paul Mundt 已提交
744
	select CLKDEV_LOOKUP
745
	select HAVE_MACH_CLKDEV
746
	select HAVE_SMP
747
	select GENERIC_CLOCKEVENTS
748
	select MIGHT_HAVE_CACHE_L2X0
749 750
	select NO_IOPORT
	select SPARSE_IRQ
751
	select MULTI_IRQ_HANDLER
752
	select PM_GENERIC_DOMAINS if PM
753
	select NEED_MACH_MEMORY_H
754
	help
755
	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
756

L
Linus Torvalds 已提交
757 758 759 760
config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
761
	select ARCH_MAY_HAVE_PC_FDC
762
	select HAVE_PATA_PLATFORM
763
	select ISA_DMA_API
A
Al Viro 已提交
764
	select NO_IOPORT
765
	select ARCH_SPARSEMEM_ENABLE
766
	select ARCH_USES_GETTIMEOFFSET
767
	select HAVE_IDE
768
	select NEED_MACH_IO_H
769
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
770 771 772 773 774 775
	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"
776
	select CLKSRC_MMIO
777
	select CPU_SA1100
778
	select ISA
779
	select ARCH_SPARSEMEM_ENABLE
780
	select ARCH_MTD_XIP
781
	select ARCH_HAS_CPUFREQ
R
Russell King 已提交
782
	select CPU_FREQ
783
	select GENERIC_CLOCKEVENTS
J
Jett.Zhou 已提交
784
	select CLKDEV_LOOKUP
785
	select TICK_ONESHOT
M
Michael Buesch 已提交
786
	select ARCH_REQUIRE_GPIOLIB
787
	select HAVE_IDE
788
	select NEED_MACH_MEMORY_H
789
	select SPARSE_IRQ
790 791
	help
	  Support for StrongARM 11x0 based boards.
L
Linus Torvalds 已提交
792

793 794
config ARCH_S3C24XX
	bool "Samsung S3C24XX SoCs"
D
David Brownell 已提交
795
	select GENERIC_GPIO
B
Ben Dooks 已提交
796
	select ARCH_HAS_CPUFREQ
797
	select HAVE_CLK
798
	select CLKDEV_LOOKUP
799
	select ARCH_USES_GETTIMEOFFSET
800
	select HAVE_S3C2410_I2C if I2C
801 802
	select HAVE_S3C_RTC if RTC_CLASS
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
803
	select NEED_MACH_IO_H
L
Linus Torvalds 已提交
804
	help
805 806 807 808
	  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).
809

B
Ben Dooks 已提交
810 811
config ARCH_S3C64XX
	bool "Samsung S3C64XX"
812
	select PLAT_SAMSUNG
813 814
	select CPU_V6
	select ARM_VIC
B
Ben Dooks 已提交
815
	select HAVE_CLK
M
Mark Brown 已提交
816
	select HAVE_TCM
817
	select CLKDEV_LOOKUP
818
	select NO_IOPORT
819
	select ARCH_USES_GETTIMEOFFSET
820
	select ARCH_HAS_CPUFREQ
821 822 823 824 825 826 827
	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
828
	select HAVE_S3C2410_I2C if I2C
829
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
B
Ben Dooks 已提交
830 831 832
	help
	  Samsung S3C64XX series based systems

833 834
config ARCH_S5P64X0
	bool "Samsung S5P6440 S5P6450"
835 836 837
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
838
	select CLKDEV_LOOKUP
839
	select CLKSRC_MMIO
840
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
841
	select GENERIC_CLOCKEVENTS
842
	select HAVE_S3C2410_I2C if I2C
843
	select HAVE_S3C_RTC if RTC_CLASS
844
	help
845 846
	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
	  SMDK6450.
847

848 849
config ARCH_S5PC100
	bool "Samsung S5PC100"
850 851
	select GENERIC_GPIO
	select HAVE_CLK
852
	select CLKDEV_LOOKUP
853
	select CPU_V7
854
	select ARCH_USES_GETTIMEOFFSET
855
	select HAVE_S3C2410_I2C if I2C
856
	select HAVE_S3C_RTC if RTC_CLASS
857
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
858
	help
859
	  Samsung S5PC100 series based systems
860

861 862 863
config ARCH_S5PV210
	bool "Samsung S5PV210/S5PC110"
	select CPU_V7
864
	select ARCH_SPARSEMEM_ENABLE
865
	select ARCH_HAS_HOLES_MEMORYMODEL
866 867
	select GENERIC_GPIO
	select HAVE_CLK
868
	select CLKDEV_LOOKUP
869
	select CLKSRC_MMIO
870
	select ARCH_HAS_CPUFREQ
871
	select GENERIC_CLOCKEVENTS
872
	select HAVE_S3C2410_I2C if I2C
873
	select HAVE_S3C_RTC if RTC_CLASS
874
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
875
	select NEED_MACH_MEMORY_H
876 877 878
	help
	  Samsung S5PV210/S5PC110 series based systems

879 880
config ARCH_EXYNOS
	bool "SAMSUNG EXYNOS"
881
	select CPU_V7
882
	select ARCH_SPARSEMEM_ENABLE
883
	select ARCH_HAS_HOLES_MEMORYMODEL
884 885
	select GENERIC_GPIO
	select HAVE_CLK
886
	select CLKDEV_LOOKUP
887
	select ARCH_HAS_CPUFREQ
888
	select GENERIC_CLOCKEVENTS
889
	select HAVE_S3C_RTC if RTC_CLASS
890
	select HAVE_S3C2410_I2C if I2C
891
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
892
	select NEED_MACH_MEMORY_H
893
	help
894
	  Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
895

L
Linus Torvalds 已提交
896 897
config ARCH_SHARK
	bool "Shark"
898
	select CPU_SA110
899 900
	select ISA
	select ISA_DMA
901
	select ZONE_DMA
902
	select PCI
903
	select ARCH_USES_GETTIMEOFFSET
904
	select NEED_MACH_MEMORY_H
905
	select NEED_MACH_IO_H
906 907 908
	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
909

910 911 912
config ARCH_U300
	bool "ST-Ericsson U300 Series"
	depends on MMU
913
	select CLKSRC_MMIO
914
	select CPU_ARM926T
915
	select HAVE_TCM
916
	select ARM_AMBA
917
	select ARM_PATCH_PHYS_VIRT
918 919
	select ARM_VIC
	select GENERIC_CLOCKEVENTS
920
	select CLKDEV_LOOKUP
921
	select HAVE_MACH_CLKDEV
922
	select GENERIC_GPIO
923
	select ARCH_REQUIRE_GPIOLIB
924 925 926
	help
	  Support for ST-Ericsson U300 series mobile platforms.

927 928
config ARCH_U8500
	bool "ST-Ericsson U8500 Series"
A
Arnd Bergmann 已提交
929
	depends on MMU
930 931 932
	select CPU_V7
	select ARM_AMBA
	select GENERIC_CLOCKEVENTS
933
	select CLKDEV_LOOKUP
934
	select ARCH_REQUIRE_GPIOLIB
935
	select ARCH_HAS_CPUFREQ
936
	select HAVE_SMP
937
	select MIGHT_HAVE_CACHE_L2X0
938 939 940 941 942 943 944 945
	help
	  Support for ST-Ericsson's Ux500 architecture

config ARCH_NOMADIK
	bool "STMicroelectronics Nomadik"
	select ARM_AMBA
	select ARM_VIC
	select CPU_ARM926T
946
	select CLKDEV_LOOKUP
947
	select GENERIC_CLOCKEVENTS
948
	select MIGHT_HAVE_CACHE_L2X0
949 950 951 952
	select ARCH_REQUIRE_GPIOLIB
	help
	  Support for the Nomadik platform by ST-Ericsson

953 954 955
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_CLOCKEVENTS
956
	select ARCH_REQUIRE_GPIOLIB
957
	select ZONE_DMA
958
	select HAVE_IDE
959
	select CLKDEV_LOOKUP
D
David Brownell 已提交
960
	select GENERIC_ALLOCATOR
R
Russell King 已提交
961
	select GENERIC_IRQ_CHIP
962
	select ARCH_HAS_HOLES_MEMORYMODEL
963 964 965
	help
	  Support for TI's DaVinci platform.

966 967
config ARCH_OMAP
	bool "TI OMAP"
968
	select HAVE_CLK
M
Michael Buesch 已提交
969
	select ARCH_REQUIRE_GPIOLIB
970
	select ARCH_HAS_CPUFREQ
971
	select CLKSRC_MMIO
972
	select GENERIC_CLOCKEVENTS
973
	select ARCH_HAS_HOLES_MEMORYMODEL
974
	help
975
	  Support for TI's OMAP platform (OMAP1/2/3/4).
976

977 978 979 980
config PLAT_SPEAR
	bool "ST SPEAr"
	select ARM_AMBA
	select ARCH_REQUIRE_GPIOLIB
981
	select CLKDEV_LOOKUP
982
	select CLKSRC_MMIO
983 984 985 986 987
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	help
	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).

988 989 990 991 992 993 994 995 996 997
config ARCH_VT8500
	bool "VIA/WonderMedia 85xx"
	select CPU_ARM926T
	select GENERIC_GPIO
	select ARCH_HAS_CPUFREQ
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
	select HAVE_PWM
	help
	  Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
998

999 1000
config ARCH_ZYNQ
	bool "Xilinx Zynq ARM Cortex A9 Platform"
1001 1002 1003
	select CPU_V7
	select GENERIC_CLOCKEVENTS
	select CLKDEV_LOOKUP
1004 1005 1006
	select ARM_GIC
	select ARM_AMBA
	select ICST
1007
	select MIGHT_HAVE_CACHE_L2X0
1008 1009
	select USE_OF
	help
1010
	  Support for Xilinx Zynq ARM Cortex A9 Platform
L
Linus Torvalds 已提交
1011 1012
endchoice

1013 1014 1015 1016 1017
#
# 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.
#
1018 1019 1020 1021
source "arch/arm/mach-at91/Kconfig"

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

L
Linus Torvalds 已提交
1022 1023
source "arch/arm/mach-clps711x/Kconfig"

1024 1025
source "arch/arm/mach-cns3xxx/Kconfig"

1026 1027 1028 1029
source "arch/arm/mach-davinci/Kconfig"

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

1030 1031
source "arch/arm/mach-ep93xx/Kconfig"

L
Linus Torvalds 已提交
1032 1033
source "arch/arm/mach-footbridge/Kconfig"

1034 1035
source "arch/arm/mach-gemini/Kconfig"

1036 1037
source "arch/arm/mach-h720x/Kconfig"

L
Linus Torvalds 已提交
1038 1039
source "arch/arm/mach-integrator/Kconfig"

1040 1041 1042
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
L
Linus Torvalds 已提交
1043

1044 1045
source "arch/arm/mach-iop13xx/Kconfig"

L
Linus Torvalds 已提交
1046 1047 1048 1049
source "arch/arm/mach-ixp4xx/Kconfig"

source "arch/arm/mach-ixp2000/Kconfig"

1050 1051
source "arch/arm/mach-ixp23xx/Kconfig"

1052 1053 1054 1055
source "arch/arm/mach-kirkwood/Kconfig"

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

1056 1057
source "arch/arm/mach-lpc32xx/Kconfig"

1058 1059
source "arch/arm/mach-msm/Kconfig"

1060 1061
source "arch/arm/mach-mv78xx0/Kconfig"

1062
source "arch/arm/plat-mxc/Kconfig"
L
Linus Torvalds 已提交
1063

1064 1065
source "arch/arm/mach-mxs/Kconfig"

1066
source "arch/arm/mach-netx/Kconfig"
1067

1068 1069 1070
source "arch/arm/mach-nomadik/Kconfig"
source "arch/arm/plat-nomadik/Kconfig"

1071 1072 1073
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
L
Linus Torvalds 已提交
1074

1075 1076
source "arch/arm/mach-omap2/Kconfig"

1077
source "arch/arm/mach-orion5x/Kconfig"
1078

1079 1080
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/plat-pxa/Kconfig"
1081

1082 1083 1084 1085 1086
source "arch/arm/mach-mmp/Kconfig"

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

source "arch/arm/mach-sa1100/Kconfig"
1087

1088
source "arch/arm/plat-samsung/Kconfig"
1089
source "arch/arm/plat-s3c24xx/Kconfig"
1090
source "arch/arm/plat-s5p/Kconfig"
1091

1092
source "arch/arm/plat-spear/Kconfig"
1093

1094
source "arch/arm/mach-s3c24xx/Kconfig"
1095
if ARCH_S3C24XX
1096 1097 1098
source "arch/arm/mach-s3c2412/Kconfig"
source "arch/arm/mach-s3c2440/Kconfig"
endif
L
Linus Torvalds 已提交
1099

B
Ben Dooks 已提交
1100
if ARCH_S3C64XX
1101
source "arch/arm/mach-s3c64xx/Kconfig"
B
Ben Dooks 已提交
1102 1103
endif

1104
source "arch/arm/mach-s5p64x0/Kconfig"
1105

1106 1107
source "arch/arm/mach-s5pc100/Kconfig"

1108 1109
source "arch/arm/mach-s5pv210/Kconfig"

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

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

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-vt8500/Kconfig"

1127 1128
source "arch/arm/mach-w90x900/Kconfig"

L
Linus Torvalds 已提交
1129 1130 1131 1132
# Definitions to make life easier
config ARCH_ACORN
	bool

1133 1134
config PLAT_IOP
	bool
M
Mikael Pettersson 已提交
1135
	select GENERIC_CLOCKEVENTS
1136

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

1142 1143 1144
config PLAT_PXA
	bool

1145 1146 1147
config PLAT_VERSATILE
	bool

1148 1149
config ARM_TIMER_SP804
	bool
1150
	select CLKSRC_MMIO
1151
	select HAVE_SCHED_CLOCK
1152

L
Linus Torvalds 已提交
1153 1154
source arch/arm/mm/Kconfig

1155 1156 1157 1158 1159
config ARM_NR_BANKS
	int
	default 16 if ARCH_EP93XX
	default 8

1160 1161
config IWMMXT
	bool "Enable iWMMXt support"
1162 1163
	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
1164 1165 1166 1167
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

L
Linus Torvalds 已提交
1168 1169
config XSCALE_PMU
	bool
1170
	depends on CPU_XSCALE
L
Linus Torvalds 已提交
1171 1172
	default y

1173
config CPU_HAS_PMU
1174
	depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
1175
		   (!ARCH_OMAP3 || OMAP3_EMU)
1176 1177 1178
	default y
	bool

1179 1180 1181 1182 1183
config MULTI_IRQ_HANDLER
	bool
	help
	  Allow each machine to specify it's own IRQ handler at run time.

1184 1185 1186 1187
if !MMU
source "arch/arm/Kconfig-nommu"
endif

1188 1189
config ARM_ERRATA_411920
	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1190
	depends on CPU_V6 || CPU_V6K
1191 1192 1193 1194 1195 1196
	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.

1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
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.

1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
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.

1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237
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.

1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
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.

1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263
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.

1264
config PL310_ERRATA_588369
1265
	bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
1266
	depends on CACHE_L2X0
1267 1268 1269 1270 1271 1272 1273 1274
	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
1275
	   invalidated as a result of these operations.
1276 1277 1278

config ARM_ERRATA_720789
	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1279
	depends on CPU_V7
1280 1281 1282 1283 1284 1285 1286 1287
	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.
1288

R
Russell King 已提交
1289
config PL310_ERRATA_727915
1290
	bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
R
Russell King 已提交
1291 1292 1293 1294 1295 1296 1297 1298 1299
	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.

1300 1301 1302 1303 1304
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
1305
	  (r2p*) erratum. Under very rare conditions, a faulty
1306 1307 1308 1309 1310 1311 1312
	  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.

1313 1314
config ARM_ERRATA_751472
	bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1315
	depends on CPU_V7
1316 1317 1318 1319 1320 1321 1322
	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.

1323 1324
config PL310_ERRATA_753970
	bool "PL310 errata: cache sync operation may be faulty"
1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
	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.

1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348
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.

1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
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.

1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371
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.

1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385
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.

1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
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
1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
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.

1416
# Select ISA DMA controller support
L
Linus Torvalds 已提交
1417 1418
config ISA_DMA
	bool
1419
	select ISA_DMA_API
L
Linus Torvalds 已提交
1420

1421
# Select ISA DMA interface
A
Al Viro 已提交
1422 1423 1424
config ISA_DMA_API
	bool

L
Linus Torvalds 已提交
1425
config PCI
1426
	bool "PCI support" if MIGHT_HAVE_PCI
L
Linus Torvalds 已提交
1427 1428 1429 1430 1431 1432
	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.

1433 1434 1435 1436
config PCI_DOMAINS
	bool
	depends on PCI

1437 1438 1439 1440 1441 1442
config PCI_NANOENGINE
	bool "BSE nanoEngine PCI support"
	depends on SA1100_NANOENGINE
	help
	  Enable PCI on the BSE nanoEngine board.

1443 1444 1445
config PCI_SYSCALL
	def_bool PCI

L
Linus Torvalds 已提交
1446 1447 1448 1449 1450 1451
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

M
Mike Rapoport 已提交
1452 1453 1454 1455 1456 1457
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

L
Linus Torvalds 已提交
1458 1459 1460 1461 1462 1463 1464 1465
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

1466 1467
source "kernel/time/Kconfig"

1468 1469 1470 1471 1472 1473 1474 1475 1476
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
1477
config SMP
1478
	bool "Symmetric Multi-Processing"
1479
	depends on CPU_V6K || CPU_V7
1480
	depends on GENERIC_CLOCKEVENTS
1481
	depends on HAVE_SMP
A
Arnd Bergmann 已提交
1482
	depends on MMU
1483
	select USE_GENERIC_SMP_HELPERS
1484
	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
L
Linus Torvalds 已提交
1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495
	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
1496
	  See also <file:Documentation/x86/i386/IO-APIC.txt>,
L
Linus Torvalds 已提交
1497
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1498
	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
L
Linus Torvalds 已提交
1499 1500 1501

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

1502 1503 1504
config SMP_ON_UP
	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
	depends on EXPERIMENTAL
1505
	depends on SMP && !XIP_KERNEL
1506 1507 1508 1509 1510 1511 1512 1513 1514
	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.

1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539
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.

1540 1541 1542 1543 1544
config HAVE_ARM_SCU
	bool
	help
	  This option enables support for the ARM system coherency unit

1545 1546 1547
config HAVE_ARM_TWD
	bool
	depends on SMP
R
Russell King 已提交
1548
	select TICK_ONESHOT
1549 1550 1551
	help
	  This options enables support for the ARM timer and watchdog unit

1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574
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
1575 1576 1577 1578 1579 1580
config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

1581 1582 1583 1584 1585 1586 1587
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.

1588 1589
config LOCAL_TIMERS
	bool "Use local timer interrupts"
1590
	depends on SMP
1591
	default y
1592
	select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
1593 1594 1595 1596 1597 1598
	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.

1599 1600
config ARCH_NR_GPIO
	int
1601
	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
1602
	default 355 if ARCH_U8500
1603
	default 264 if MACH_H4700
1604 1605 1606 1607 1608 1609
	default 0
	help
	  Maximum number of GPIOs in the system.

	  If unsure, leave the default value.

1610
source kernel/Kconfig.preempt
L
Linus Torvalds 已提交
1611

1612 1613
config HZ
	int
1614
	default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
K
Kukjin Kim 已提交
1615
		ARCH_S5PV210 || ARCH_EXYNOS4
1616
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1617
	default AT91_TIMER_HZ if ARCH_AT91
1618
	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1619 1620
	default 100

1621
config THUMB2_KERNEL
1622
	bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
1623
	depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
1624 1625
	select AEABI
	select ARM_ASM_UNIFIED
1626
	select ARM_UNWIND
1627 1628 1629 1630 1631 1632 1633
	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.

1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664
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.

1665 1666 1667
config ARM_ASM_UNIFIED
	bool

1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682
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.

1683
config OABI_COMPAT
1684
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1685
	depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699
	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.

1700
config ARCH_HAS_HOLES_MEMORYMODEL
1701 1702
	bool

1703 1704 1705
config ARCH_SPARSEMEM_ENABLE
	bool

1706 1707 1708
config ARCH_SPARSEMEM_DEFAULT
	def_bool ARCH_SPARSEMEM_ENABLE

1709
config ARCH_SELECT_MEMORY_MODEL
R
Russell King 已提交
1710
	def_bool ARCH_SPARSEMEM_ENABLE
Y
Yasunori Goto 已提交
1711

1712 1713 1714
config HAVE_ARCH_PFN_VALID
	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM

N
Nicolas Pitre 已提交
1715
config HIGHMEM
1716 1717
	bool "High Memory Support"
	depends on MMU
N
Nicolas Pitre 已提交
1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731
	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
1732 1733 1734 1735
config HIGHPTE
	bool "Allocate 2nd-level pagetables from highmem"
	depends on HIGHMEM

1736 1737
config HW_PERF_EVENTS
	bool "Enable hardware performance counter support for perf events"
1738
	depends on PERF_EVENTS && CPU_HAS_PMU
1739 1740 1741 1742 1743
	default y
	help
	  Enable hardware performance counter support for perf events. If
	  disabled, perf events will use software events only.

1744 1745
source "mm/Kconfig"

1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761
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
1762 1763
config LEDS
	bool "Timer and CPU usage LEDs"
1764
	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1765
		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
L
Linus Torvalds 已提交
1766 1767
		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1768
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1769
		   ARCH_AT91 || ARCH_DAVINCI || \
1770
		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
L
Linus Torvalds 已提交
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783
	help
	  If you say Y here, the LEDs on your machine will be used
	  to provide useful information about your current system status.

	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
	  be able to select which LEDs are active using the options below. If
	  you are compiling a kernel for the EBSA-110 or the LART however, the
	  red LED will simply flash regularly to indicate that the system is
	  still functional. It is safe to say Y here if you have a CATS
	  system, but the driver will do nothing.

config LEDS_TIMER
	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
D
David Brownell 已提交
1784 1785
			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			    || MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1786
	depends on LEDS
1787
	depends on !GENERIC_CLOCKEVENTS
L
Linus Torvalds 已提交
1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801
	default y if ARCH_EBSA110
	help
	  If you say Y here, one of the system LEDs (the green one on the
	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
	  will flash regularly to indicate that the system is still
	  operational. This is mainly useful to kernel hackers who are
	  debugging unstable kernels.

	  The LART uses the same LED for both Timer LED and CPU usage LED
	  functions. You may choose to use both, but the Timer LED function
	  will overrule the CPU usage LED.

config LEDS_CPU
	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
D
David Brownell 已提交
1802 1803 1804
			!ARCH_OMAP) \
			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			|| MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816
	depends on LEDS
	help
	  If you say Y here, the red LED will be used to give a good real
	  time indication of CPU usage, by lighting whenever the idle task
	  is not currently executing.

	  The LART uses the same LED for both Timer LED and CPU usage LED
	  functions. You may choose to use both, but the Timer LED function
	  will overrule the CPU usage LED.

config ALIGNMENT_TRAP
	bool
1817
	depends on CPU_CP15_MMU
L
Linus Torvalds 已提交
1818
	default y if !ARCH_EBSA110
1819
	select HAVE_PROC_CPU if PROC_FS
L
Linus Torvalds 已提交
1820
	help
1821
	  ARM processors cannot fetch/store information which is not
L
Linus Torvalds 已提交
1822 1823 1824 1825 1826 1827 1828
	  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.

1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844
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
1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858
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.

1859 1860
config CC_STACKPROTECTOR
	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1861
	depends on EXPERIMENTAL
1862 1863 1864 1865 1866 1867 1868 1869 1870 1871
	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.

1872 1873 1874 1875 1876 1877
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.

L
Linus Torvalds 已提交
1878 1879 1880 1881
endmenu

menu "Boot options"

G
Grant Likely 已提交
1882 1883 1884 1885
config USE_OF
	bool "Flattened Device Tree support"
	select OF
	select OF_EARLY_FLATTREE
1886
	select IRQ_DOMAIN
G
Grant Likely 已提交
1887 1888 1889
	help
	  Include support for flattened device tree machine descriptions.

L
Linus Torvalds 已提交
1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906
# 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
1907 1908 1909 1910 1911 1912
	  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
1913 1914 1915 1916 1917 1918 1919 1920 1921 1922

	  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.

1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939
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.
	  With this enabled it is possible to write the the ROM-able zImage
	  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
	  the first part of the the ROM-able zImage which in turn loads the
	  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

1940 1941 1942
config ZBOOT_ROM_MMCIF
	bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
	help
1943 1944 1945 1946 1947 1948 1949 1950
	  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
1951

1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
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.

1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983
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.

L
Linus Torvalds 已提交
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993
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).

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
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.

2011 2012 2013 2014 2015 2016 2017
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.
2018
endchoice
2019

L
Linus Torvalds 已提交
2020 2021
config XIP_KERNEL
	bool "Kernel Execute-In-Place from ROM"
2022
	depends on !ZBOOT_ROM && !ARM_LPAE
L
Linus Torvalds 已提交
2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049
	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
2050 2051
config KEXEC
	bool "Kexec system call (EXPERIMENTAL)"
2052
	depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
R
Richard Purdie 已提交
2053 2054 2055
	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
2056
	  but it is independent of the system firmware.   And like a reboot
R
Richard Purdie 已提交
2057 2058 2059 2060 2061 2062 2063
	  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.

2064 2065
config ATAGS_PROC
	bool "Export atags in procfs"
2066 2067
	depends on KEXEC
	default y
2068 2069 2070 2071
	help
	  Should the atags used to boot the kernel be exported in an "atags"
	  file in procfs. Useful with kexec.

2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084
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

2085 2086 2087 2088 2089 2090 2091 2092 2093 2094
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
2095 2096
endmenu

2097
menu "CPU Power Management"
L
Linus Torvalds 已提交
2098

2099
if ARCH_HAS_CPUFREQ
L
Linus Torvalds 已提交
2100 2101 2102

source "drivers/cpufreq/Kconfig"

Y
Yong Shen 已提交
2103 2104 2105 2106 2107 2108
config CPU_FREQ_IMX
	tristate "CPUfreq driver for i.MX CPUs"
	depends on ARCH_MXC && CPU_FREQ
	help
	  This enables the CPUfreq driver for i.MX CPUs.

L
Linus Torvalds 已提交
2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125
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
2126 2127 2128 2129
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
2130
	select CPU_FREQ_TABLE
R
Russell King 已提交
2131 2132
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

B
Ben Dooks 已提交
2133 2134 2135 2136 2137 2138
config CPU_FREQ_S3C
	bool
	help
	  Internal configuration node for common cpufreq on Samsung SoC

config CPU_FREQ_S3C24XX
2139
	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
2140
	depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
B
Ben Dooks 已提交
2141 2142 2143 2144 2145 2146 2147 2148 2149 2150
	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
2151
	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
B
Ben Dooks 已提交
2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172
	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

2173 2174 2175 2176 2177 2178
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
2179 2180
endif

2181 2182 2183 2184
source "drivers/cpuidle/Kconfig"

endmenu

L
Linus Torvalds 已提交
2185 2186 2187 2188 2189 2190
menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
2191
	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
L
Linus Torvalds 已提交
2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202
	---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"
2203
	depends on FPE_NWFPE
L
Linus Torvalds 已提交
2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214
	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)"
2215
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
L
Linus Torvalds 已提交
2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228
	---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"
2229
	depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
L
Linus Torvalds 已提交
2230 2231 2232 2233 2234 2235 2236 2237 2238
	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.

2239 2240 2241 2242 2243
config VFPv3
	bool
	depends on VFP
	default y if CPU_V7

2244 2245 2246 2247 2248 2249 2250
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
2251 2252 2253 2254 2255 2256 2257 2258
endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
2259
	depends on !AEABI
L
Linus Torvalds 已提交
2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270
	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
2271
source "kernel/power/Kconfig"
L
Linus Torvalds 已提交
2272

J
Johannes Berg 已提交
2273
config ARCH_SUSPEND_POSSIBLE
2274
	depends on !ARCH_S5PC100
2275 2276
	depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
		CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
J
Johannes Berg 已提交
2277 2278
	def_bool y

2279 2280 2281
config ARM_CPU_SUSPEND
	def_bool PM_SLEEP

L
Linus Torvalds 已提交
2282 2283
endmenu

2284 2285
source "net/Kconfig"

2286
source "drivers/Kconfig"
L
Linus Torvalds 已提交
2287 2288 2289 2290 2291 2292 2293 2294 2295 2296

source "fs/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"