Kconfig 64.6 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 33
	select HAVE_GENERIC_HARDIRQS
	select HAVE_SPARSE_IRQ
34
	select GENERIC_IRQ_SHOW
35
	select CPU_PM if (SUSPEND || CPU_IDLE)
36
	select GENERIC_PCI_IOMAP
37
	select HAVE_BPF_JIT
L
Linus Torvalds 已提交
38 39
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
40
	  licensed by ARM Ltd and targeted at embedded applications and
L
Linus Torvalds 已提交
41
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
42
	  manufactured, but legacy ARM-based PC hardware remains popular in
L
Linus Torvalds 已提交
43 44 45
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

46 47 48
config ARM_HAS_SG_CHAIN
	bool

R
Russell King 已提交
49 50 51
config HAVE_PWM
	bool

52 53 54
config MIGHT_HAVE_PCI
	bool

55 56 57
config SYS_SUPPORTS_APM_EMULATION
	bool

58 59 60
config HAVE_SCHED_CLOCK
	bool

D
David Brownell 已提交
61 62 63
config GENERIC_GPIO
	bool

64 65 66
config ARCH_USES_GETTIMEOFFSET
	bool
	default n
67

68 69 70
config GENERIC_CLOCKEVENTS
	bool

71 72 73
config GENERIC_CLOCKEVENTS_BROADCAST
	bool
	depends on GENERIC_CLOCKEVENTS
74
	default y if SMP
75

76 77 78 79
config KTIME_SCALAR
	bool
	default y

80 81 82 83
config HAVE_TCM
	bool
	select GENERIC_ALLOCATOR

84 85 86
config HAVE_PROC_CPU
	bool

A
Al Viro 已提交
87 88 89
config NO_IOPORT
	bool

L
Linus Torvalds 已提交
90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115
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.

116 117 118 119
config STACKTRACE_SUPPORT
	bool
	default y

N
Nicolas Pitre 已提交
120 121 122 123 124
config HAVE_LATENCYTOP_SUPPORT
	bool
	depends on !SMP
	default y

125 126 127 128
config LOCKDEP_SUPPORT
	bool
	default y

R
Russell King 已提交
129 130 131 132
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

133 134 135 136 137 138 139 140
config HARDIRQS_SW_RESEND
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

N
Nick Piggin 已提交
141 142 143 144 145
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

L
Linus Torvalds 已提交
146 147 148 149 150 151 152
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

153 154 155 156 157 158
config ARCH_HAS_ILOG2_U32
	bool

config ARCH_HAS_ILOG2_U64
	bool

159 160 161 162 163 164 165
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.

166 167 168
config ARCH_HAS_CPU_IDLE_WAIT
       def_bool y

169 170 171 172
config GENERIC_HWEIGHT
	bool
	default y

L
Linus Torvalds 已提交
173 174 175 176
config GENERIC_CALIBRATE_DELAY
	bool
	default y

177 178 179
config ARCH_MAY_HAVE_PC_FDC
	bool

180 181 182
config ZONE_DMA
	bool

183 184 185
config NEED_DMA_MAP_STATE
       def_bool y

L
Linus Torvalds 已提交
186 187 188 189 190 191
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

192 193 194
config ARCH_MTD_XIP
	bool

195 196
config VECTORS_BASE
	hex
197
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
198 199 200 201 202
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

203
config ARM_PATCH_PHYS_VIRT
204 205
	bool "Patch physical to virtual translations at runtime" if EMBEDDED
	default y
N
Nicolas Pitre 已提交
206
	depends on !XIP_KERNEL && MMU
207 208
	depends on !ARCH_REALVIEW || !SPARSEMEM
	help
209 210 211
	  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.
212

213
	  This can only be used with non-XIP MMU kernels where the base
214
	  of physical memory is at a 16MB boundary.
215

216 217 218
	  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.
219

220
config NEED_MACH_MEMORY_H
221 222
	bool
	help
223 224 225
	  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.
226

227
config PHYS_OFFSET
228
	hex "Physical address of main memory" if MMU
229
	depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
230
	default DRAM_BASE if !MMU
231
	help
232 233
	  Please provide the physical address corresponding to the
	  location of main memory in your system.
234

235 236 237 238
config GENERIC_BUG
	def_bool y
	depends on BUG

L
Linus Torvalds 已提交
239 240
source "init/Kconfig"

241 242
source "kernel/Kconfig.freezer"

L
Linus Torvalds 已提交
243 244
menu "System Type"

245 246 247 248 249 250 251
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'.

252 253 254 255
#
# 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
256 257
choice
	prompt "ARM system type"
258
	default ARCH_VERSATILE
L
Linus Torvalds 已提交
259

260 261 262
config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
263
	select ARCH_HAS_CPUFREQ
264
	select CLKDEV_LOOKUP
265
	select HAVE_MACH_CLKDEV
266
	select HAVE_TCM
267
	select ICST
268
	select GENERIC_CLOCKEVENTS
269
	select PLAT_VERSATILE
270
	select PLAT_VERSATILE_FPGA_IRQ
271
	select NEED_MACH_MEMORY_H
272
	select SPARSE_IRQ
273 274 275 276 277 278
	help
	  Support for ARM's Integrator platform.

config ARCH_REALVIEW
	bool "ARM Ltd. RealView family"
	select ARM_AMBA
279
	select CLKDEV_LOOKUP
280
	select HAVE_MACH_CLKDEV
281
	select ICST
282
	select GENERIC_CLOCKEVENTS
283
	select ARCH_WANT_OPTIONAL_GPIOLIB
284
	select PLAT_VERSATILE
285
	select PLAT_VERSATILE_CLCD
286
	select ARM_TIMER_SP804
287
	select GPIO_PL061 if GPIOLIB
288
	select NEED_MACH_MEMORY_H
289 290 291 292 293 294 295
	help
	  This enables support for ARM Ltd RealView boards.

config ARCH_VERSATILE
	bool "ARM Ltd. Versatile family"
	select ARM_AMBA
	select ARM_VIC
296
	select CLKDEV_LOOKUP
297
	select HAVE_MACH_CLKDEV
298
	select ICST
299
	select GENERIC_CLOCKEVENTS
300
	select ARCH_WANT_OPTIONAL_GPIOLIB
301
	select PLAT_VERSATILE
302
	select PLAT_VERSATILE_CLCD
303
	select PLAT_VERSATILE_FPGA_IRQ
304
	select ARM_TIMER_SP804
305 306 307
	help
	  This enables support for ARM Ltd Versatile board.

308 309 310 311 312
config ARCH_VEXPRESS
	bool "ARM Ltd. Versatile Express family"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_TIMER_SP804
313
	select CLKDEV_LOOKUP
314
	select HAVE_MACH_CLKDEV
315 316
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
317
	select HAVE_PATA_PLATFORM
318
	select ICST
319
	select NO_IOPORT
320
	select PLAT_VERSATILE
321
	select PLAT_VERSATILE_CLCD
322 323 324
	help
	  This enables support for the ARM Ltd Versatile Express boards.

325 326
config ARCH_AT91
	bool "Atmel AT91"
327
	select ARCH_REQUIRE_GPIOLIB
D
David Brownell 已提交
328
	select HAVE_CLK
329
	select CLKDEV_LOOKUP
330
	help
331 332
	  This enables support for systems based on the Atmel AT91RM9200,
	  AT91SAM9 and AT91CAP9 processors.
333

334 335 336 337 338
config ARCH_BCMRING
	bool "Broadcom BCMRING"
	depends on MMU
	select CPU_V6
	select ARM_AMBA
339
	select ARM_TIMER_SP804
340
	select CLKDEV_LOOKUP
341 342 343 344 345
	select GENERIC_CLOCKEVENTS
	select ARCH_WANT_OPTIONAL_GPIOLIB
	help
	  Support for Broadcom's BCMRing platform.

346 347 348 349 350 351
config ARCH_HIGHBANK
	bool "Calxeda Highbank-based"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_GIC
	select ARM_TIMER_SP804
352
	select CACHE_L2X0
353 354 355 356
	select CLKDEV_LOOKUP
	select CPU_V7
	select GENERIC_CLOCKEVENTS
	select HAVE_ARM_SCU
357
	select HAVE_SMP
358 359 360 361
	select USE_OF
	help
	  Support for the Calxeda Highbank SoC based boards.

L
Linus Torvalds 已提交
362
config ARCH_CLPS711X
363
	bool "Cirrus Logic CLPS711x/EP721x-based"
364
	select CPU_ARM720T
365
	select ARCH_USES_GETTIMEOFFSET
366
	select NEED_MACH_MEMORY_H
367 368
	help
	  Support for Cirrus Logic 711x/721x based boards.
L
Linus Torvalds 已提交
369

370 371
config ARCH_CNS3XXX
	bool "Cavium Networks CNS3XXX family"
I
Imre Kaloz 已提交
372
	select CPU_V6K
373 374
	select GENERIC_CLOCKEVENTS
	select ARM_GIC
375
	select MIGHT_HAVE_CACHE_L2X0
376
	select MIGHT_HAVE_PCI
377
	select PCI_DOMAINS if PCI
378 379 380
	help
	  Support for Cavium Networks CNS3XXX platform.

381 382 383 384
config ARCH_GEMINI
	bool "Cortina Systems Gemini"
	select CPU_FA526
	select ARCH_REQUIRE_GPIOLIB
385
	select ARCH_USES_GETTIMEOFFSET
386 387 388
	help
	  Support for the Cortina Systems Gemini family SoCs

A
Arnd Bergmann 已提交
389 390 391 392 393 394 395
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
396
	select MIGHT_HAVE_CACHE_L2X0
A
Arnd Bergmann 已提交
397 398 399 400 401
	select USE_OF
	select ZONE_DMA
	help
          Support for CSR SiRFSoC ARM Cortex A9 Platform

L
Linus Torvalds 已提交
402 403
config ARCH_EBSA110
	bool "EBSA-110"
404
	select CPU_SA110
405
	select ISA
406
	select NO_IOPORT
407
	select ARCH_USES_GETTIMEOFFSET
408
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
409 410
	help
	  This is an evaluation board for the StrongARM processor available
411
	  from Digital. It has limited hardware on-board, including an
L
Linus Torvalds 已提交
412 413 414
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

415 416
config ARCH_EP93XX
	bool "EP93xx-based"
417
	select CPU_ARM920T
418 419
	select ARM_AMBA
	select ARM_VIC
420
	select CLKDEV_LOOKUP
M
Michael Buesch 已提交
421
	select ARCH_REQUIRE_GPIOLIB
422
	select ARCH_HAS_HOLES_MEMORYMODEL
423
	select ARCH_USES_GETTIMEOFFSET
424
	select NEED_MACH_MEMORY_H
425 426 427
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

L
Linus Torvalds 已提交
428 429
config ARCH_FOOTBRIDGE
	bool "FootBridge"
430
	select CPU_SA110
L
Linus Torvalds 已提交
431
	select FOOTBRIDGE
432
	select GENERIC_CLOCKEVENTS
433
	select HAVE_IDE
434
	select NEED_MACH_MEMORY_H
435 436 437
	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
438

439 440 441 442
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
443
	select CLKDEV_LOOKUP
444
	select CLKSRC_MMIO
445
	select GENERIC_IRQ_CHIP
446
	select HAVE_SCHED_CLOCK
447
	select MULTI_IRQ_HANDLER
448 449 450
	help
	  Support for Freescale MXC/iMX-based family of processors

451 452 453 454
config ARCH_MXS
	bool "Freescale MXS-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
455
	select CLKDEV_LOOKUP
456
	select CLKSRC_MMIO
457
	select HAVE_CLK_PREPARE
458 459 460
	help
	  Support for Freescale MXS-based family of processors

461 462
config ARCH_NETX
	bool "Hilscher NetX based"
463
	select CLKSRC_MMIO
464
	select CPU_ARM926T
465
	select ARM_VIC
466
	select GENERIC_CLOCKEVENTS
467
	help
468 469 470 471
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
472
	select CPU_ARM720T
473
	select ISA_DMA_API
474
	select ARCH_USES_GETTIMEOFFSET
475 476 477
	help
	  This enables support for systems based on the Hynix HMS720x

478 479 480
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
481
	select CPU_XSC3
482 483 484
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
485
	select VMSPLIT_1G
486
	select NEED_MACH_MEMORY_H
487 488 489
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

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

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
504
	select CPU_XSCALE
505
	select PLAT_IOP
506
	select PCI
507
	select ARCH_REQUIRE_GPIOLIB
508 509
	help
	  Support for Intel's IOP33X (XScale) family of processors.
L
Linus Torvalds 已提交
510

511 512
config ARCH_IXP23XX
 	bool "IXP23XX-based"
513
	depends on MMU
514
	select CPU_XSC3
515
 	select PCI
516
	select ARCH_USES_GETTIMEOFFSET
517
	select NEED_MACH_MEMORY_H
518
	help
519
	  Support for Intel's IXP23xx (XScale) family of processors.
L
Linus Torvalds 已提交
520 521 522

config ARCH_IXP2000
	bool "IXP2400/2800-based"
523
	depends on MMU
524
	select CPU_XSCALE
525
	select PCI
526
	select ARCH_USES_GETTIMEOFFSET
527
	select NEED_MACH_MEMORY_H
528 529
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
L
Linus Torvalds 已提交
530

531 532
config ARCH_IXP4XX
	bool "IXP4xx-based"
533
	depends on MMU
534
	select CLKSRC_MMIO
535
	select CPU_XSCALE
536
	select GENERIC_GPIO
537
	select GENERIC_CLOCKEVENTS
538
	select HAVE_SCHED_CLOCK
539
	select MIGHT_HAVE_PCI
R
Russell King 已提交
540
	select DMABOUNCE if PCI
541
	help
542
	  Support for Intel's IXP4XX (XScale) family of processors.
543

544 545
config ARCH_DOVE
	bool "Marvell Dove"
546
	select CPU_V7
547 548 549 550 551 552 553
	select PCI
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the Marvell Dove SoC 88AP510

554 555
config ARCH_KIRKWOOD
	bool "Marvell Kirkwood"
556
	select CPU_FEROCEON
557
	select PCI
558
	select ARCH_REQUIRE_GPIOLIB
559 560 561 562 563 564
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell Kirkwood series SoCs:
	  88F6180, 88F6192 and 88F6281.

565 566
config ARCH_LPC32XX
	bool "NXP LPC32XX"
567
	select CLKSRC_MMIO
568 569 570 571 572
	select CPU_ARM926T
	select ARCH_REQUIRE_GPIOLIB
	select HAVE_IDE
	select ARM_AMBA
	select USB_ARCH_HAS_OHCI
573
	select CLKDEV_LOOKUP
574 575 576 577
	select GENERIC_CLOCKEVENTS
	help
	  Support for the NXP LPC32XX family of processors

578 579
config ARCH_MV78XX0
	bool "Marvell MV78xx0"
580
	select CPU_FEROCEON
581
	select PCI
582
	select ARCH_REQUIRE_GPIOLIB
583 584 585 586 587 588
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell MV78xx0 series SoCs:
	  MV781x0, MV782x0.

589
config ARCH_ORION5X
590 591
	bool "Marvell Orion"
	depends on MMU
592
	select CPU_FEROCEON
T
Tzachi Perelstein 已提交
593
	select PCI
594
	select ARCH_REQUIRE_GPIOLIB
595
	select GENERIC_CLOCKEVENTS
L
Lennert Buytenhek 已提交
596
	select PLAT_ORION
597
	help
598
	  Support for the following Marvell Orion 5x series SoCs:
599
	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
600
	  Orion-2 (5281), Orion-1-90 (6183).
601

602
config ARCH_MMP
603
	bool "Marvell PXA168/910/MMP2"
604 605
	depends on MMU
	select ARCH_REQUIRE_GPIOLIB
606
	select CLKDEV_LOOKUP
607
	select GENERIC_CLOCKEVENTS
608
	select GPIO_PXA
609
	select HAVE_SCHED_CLOCK
610 611
	select TICK_ONESHOT
	select PLAT_PXA
H
Haojian Zhuang 已提交
612
	select SPARSE_IRQ
L
Leo Yan 已提交
613
	select GENERIC_ALLOCATOR
614
	help
615
	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
616 617 618 619

config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
	select CPU_ARM922T
620
	select ARCH_REQUIRE_GPIOLIB
621
	select ARCH_USES_GETTIMEOFFSET
622
	select NEED_MACH_MEMORY_H
623 624 625 626 627 628 629
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

config ARCH_W90X900
	bool "Nuvoton W90X900 CPU"
	select CPU_ARM926T
630
	select ARCH_REQUIRE_GPIOLIB
631
	select CLKDEV_LOOKUP
632
	select CLKSRC_MMIO
633
	select GENERIC_CLOCKEVENTS
634
	help
635 636 637 638 639 640 641
	  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>
642

643 644
config ARCH_TEGRA
	bool "NVIDIA Tegra"
R
Russell King 已提交
645
	select CLKDEV_LOOKUP
646
	select CLKSRC_MMIO
647 648 649
	select GENERIC_CLOCKEVENTS
	select GENERIC_GPIO
	select HAVE_CLK
650
	select HAVE_SCHED_CLOCK
651
	select HAVE_SMP
652
	select MIGHT_HAVE_CACHE_L2X0
C
Colin Cross 已提交
653
	select ARCH_HAS_CPUFREQ
654 655 656 657
	help
	  This enables support for NVIDIA Tegra based systems (Tegra APX,
	  Tegra 6xx and Tegra 2 series).

658 659 660 661 662 663 664 665 666 667 668 669
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_SCHED_CLOCK
	select HAVE_TCM
	select NO_IOPORT
670
	select SPARSE_IRQ
671 672 673 674 675 676
	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.

677 678
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
679
	select CPU_ARM926T
680
	select CLKDEV_LOOKUP
681
	select ARCH_USES_GETTIMEOFFSET
682 683 684
	help
	  This enables support for Philips PNX4008 mobile platform.

L
Linus Torvalds 已提交
685
config ARCH_PXA
E
eric miao 已提交
686
	bool "PXA2xx/PXA3xx-based"
687
	depends on MMU
688
	select ARCH_MTD_XIP
689
	select ARCH_HAS_CPUFREQ
690
	select CLKDEV_LOOKUP
691
	select CLKSRC_MMIO
M
Michael Buesch 已提交
692
	select ARCH_REQUIRE_GPIOLIB
693
	select GENERIC_CLOCKEVENTS
694
	select GPIO_PXA
695
	select HAVE_SCHED_CLOCK
696
	select TICK_ONESHOT
697
	select PLAT_PXA
698
	select SPARSE_IRQ
E
Eric Miao 已提交
699
	select AUTO_ZRELADDR
700
	select MULTI_IRQ_HANDLER
701
	select ARM_CPU_SUSPEND if PM
702
	select HAVE_IDE
703
	help
E
eric miao 已提交
704
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
L
Linus Torvalds 已提交
705

706 707
config ARCH_MSM
	bool "Qualcomm MSM"
708
	select HAVE_CLK
709
	select GENERIC_CLOCKEVENTS
P
Pavel Machek 已提交
710
	select ARCH_REQUIRE_GPIOLIB
S
Stephen Boyd 已提交
711
	select CLKDEV_LOOKUP
712
	help
713 714 715 716 717
	  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).
718

719
config ARCH_SHMOBILE
720 721
	bool "Renesas SH-Mobile / R-Mobile"
	select HAVE_CLK
P
Paul Mundt 已提交
722
	select CLKDEV_LOOKUP
723
	select HAVE_MACH_CLKDEV
724
	select HAVE_SMP
725
	select GENERIC_CLOCKEVENTS
726
	select MIGHT_HAVE_CACHE_L2X0
727 728
	select NO_IOPORT
	select SPARSE_IRQ
729
	select MULTI_IRQ_HANDLER
730
	select PM_GENERIC_DOMAINS if PM
731
	select NEED_MACH_MEMORY_H
732
	help
733
	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
734

L
Linus Torvalds 已提交
735 736 737 738 739
config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
740
	select ARCH_MAY_HAVE_PC_FDC
741
	select HAVE_PATA_PLATFORM
742
	select ISA_DMA_API
A
Al Viro 已提交
743
	select NO_IOPORT
744
	select ARCH_SPARSEMEM_ENABLE
745
	select ARCH_USES_GETTIMEOFFSET
746
	select HAVE_IDE
747
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
748 749 750 751 752 753
	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"
754
	select CLKSRC_MMIO
755
	select CPU_SA1100
756
	select ISA
757
	select ARCH_SPARSEMEM_ENABLE
758
	select ARCH_MTD_XIP
759
	select ARCH_HAS_CPUFREQ
R
Russell King 已提交
760
	select CPU_FREQ
761
	select GENERIC_CLOCKEVENTS
762
	select CLKDEV_LOOKUP
763
	select HAVE_SCHED_CLOCK
764
	select TICK_ONESHOT
M
Michael Buesch 已提交
765
	select ARCH_REQUIRE_GPIOLIB
766
	select HAVE_IDE
767
	select NEED_MACH_MEMORY_H
768 769
	help
	  Support for StrongARM 11x0 based boards.
L
Linus Torvalds 已提交
770 771

config ARCH_S3C2410
772
	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
D
David Brownell 已提交
773
	select GENERIC_GPIO
B
Ben Dooks 已提交
774
	select ARCH_HAS_CPUFREQ
775
	select HAVE_CLK
776
	select CLKDEV_LOOKUP
777
	select ARCH_USES_GETTIMEOFFSET
778
	select HAVE_S3C2410_I2C if I2C
L
Linus Torvalds 已提交
779 780 781
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
782
	  the Samsung SMDK2410 development board (and derivatives).
L
Linus Torvalds 已提交
783

784
	  Note, the S3C2416 and the S3C2450 are so close that they even share
L
Lucas De Marchi 已提交
785
	  the same SoC ID code. This means that there is no separate machine
786 787
	  directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.

B
Ben Dooks 已提交
788 789
config ARCH_S3C64XX
	bool "Samsung S3C64XX"
790
	select PLAT_SAMSUNG
791 792
	select CPU_V6
	select ARM_VIC
B
Ben Dooks 已提交
793
	select HAVE_CLK
M
Mark Brown 已提交
794
	select HAVE_TCM
795
	select CLKDEV_LOOKUP
796
	select NO_IOPORT
797
	select ARCH_USES_GETTIMEOFFSET
798
	select ARCH_HAS_CPUFREQ
799 800 801 802 803 804 805
	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
806
	select HAVE_S3C2410_I2C if I2C
807
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
B
Ben Dooks 已提交
808 809 810
	help
	  Samsung S3C64XX series based systems

811 812
config ARCH_S5P64X0
	bool "Samsung S5P6440 S5P6450"
813 814 815
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
816
	select CLKDEV_LOOKUP
817
	select CLKSRC_MMIO
818
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
819 820
	select GENERIC_CLOCKEVENTS
	select HAVE_SCHED_CLOCK
821
	select HAVE_S3C2410_I2C if I2C
822
	select HAVE_S3C_RTC if RTC_CLASS
823
	help
824 825
	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
	  SMDK6450.
826

827 828
config ARCH_S5PC100
	bool "Samsung S5PC100"
829 830
	select GENERIC_GPIO
	select HAVE_CLK
831
	select CLKDEV_LOOKUP
832
	select CPU_V7
833
	select ARM_L1_CACHE_SHIFT_6
834
	select ARCH_USES_GETTIMEOFFSET
835
	select HAVE_S3C2410_I2C if I2C
836
	select HAVE_S3C_RTC if RTC_CLASS
837
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
838
	help
839
	  Samsung S5PC100 series based systems
840

841 842 843
config ARCH_S5PV210
	bool "Samsung S5PV210/S5PC110"
	select CPU_V7
844
	select ARCH_SPARSEMEM_ENABLE
845
	select ARCH_HAS_HOLES_MEMORYMODEL
846 847
	select GENERIC_GPIO
	select HAVE_CLK
848
	select CLKDEV_LOOKUP
849
	select CLKSRC_MMIO
850
	select ARM_L1_CACHE_SHIFT_6
851
	select ARCH_HAS_CPUFREQ
852 853
	select GENERIC_CLOCKEVENTS
	select HAVE_SCHED_CLOCK
854
	select HAVE_S3C2410_I2C if I2C
855
	select HAVE_S3C_RTC if RTC_CLASS
856
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
857
	select NEED_MACH_MEMORY_H
858 859 860
	help
	  Samsung S5PV210/S5PC110 series based systems

861 862
config ARCH_EXYNOS
	bool "SAMSUNG EXYNOS"
863
	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 ARCH_HAS_CPUFREQ
870
	select GENERIC_CLOCKEVENTS
871
	select HAVE_S3C_RTC if RTC_CLASS
872
	select HAVE_S3C2410_I2C if I2C
873
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
874
	select NEED_MACH_MEMORY_H
875
	help
876
	  Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
877

L
Linus Torvalds 已提交
878 879
config ARCH_SHARK
	bool "Shark"
880
	select CPU_SA110
881 882
	select ISA
	select ISA_DMA
883
	select ZONE_DMA
884
	select PCI
885
	select ARCH_USES_GETTIMEOFFSET
886
	select NEED_MACH_MEMORY_H
887 888 889
	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
890

891 892 893
config ARCH_U300
	bool "ST-Ericsson U300 Series"
	depends on MMU
894
	select CLKSRC_MMIO
895
	select CPU_ARM926T
896
	select HAVE_SCHED_CLOCK
897
	select HAVE_TCM
898
	select ARM_AMBA
899
	select ARM_PATCH_PHYS_VIRT
900 901
	select ARM_VIC
	select GENERIC_CLOCKEVENTS
902
	select CLKDEV_LOOKUP
903
	select HAVE_MACH_CLKDEV
904
	select GENERIC_GPIO
905
	select ARCH_REQUIRE_GPIOLIB
906 907 908
	help
	  Support for ST-Ericsson U300 series mobile platforms.

909 910 911 912 913
config ARCH_U8500
	bool "ST-Ericsson U8500 Series"
	select CPU_V7
	select ARM_AMBA
	select GENERIC_CLOCKEVENTS
914
	select CLKDEV_LOOKUP
915
	select ARCH_REQUIRE_GPIOLIB
916
	select ARCH_HAS_CPUFREQ
917
	select HAVE_SMP
918
	select MIGHT_HAVE_CACHE_L2X0
919 920 921 922 923 924 925 926
	help
	  Support for ST-Ericsson's Ux500 architecture

config ARCH_NOMADIK
	bool "STMicroelectronics Nomadik"
	select ARM_AMBA
	select ARM_VIC
	select CPU_ARM926T
927
	select CLKDEV_LOOKUP
928
	select GENERIC_CLOCKEVENTS
929
	select MIGHT_HAVE_CACHE_L2X0
930 931 932 933
	select ARCH_REQUIRE_GPIOLIB
	help
	  Support for the Nomadik platform by ST-Ericsson

934 935 936
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_CLOCKEVENTS
937
	select ARCH_REQUIRE_GPIOLIB
938
	select ZONE_DMA
939
	select HAVE_IDE
940
	select CLKDEV_LOOKUP
D
David Brownell 已提交
941
	select GENERIC_ALLOCATOR
R
Russell King 已提交
942
	select GENERIC_IRQ_CHIP
943
	select ARCH_HAS_HOLES_MEMORYMODEL
944 945 946
	help
	  Support for TI's DaVinci platform.

947 948
config ARCH_OMAP
	bool "TI OMAP"
949
	select HAVE_CLK
M
Michael Buesch 已提交
950
	select ARCH_REQUIRE_GPIOLIB
951
	select ARCH_HAS_CPUFREQ
952
	select CLKSRC_MMIO
953
	select GENERIC_CLOCKEVENTS
954
	select HAVE_SCHED_CLOCK
955
	select ARCH_HAS_HOLES_MEMORYMODEL
956
	help
957
	  Support for TI's OMAP platform (OMAP1/2/3/4).
958

959 960 961 962
config PLAT_SPEAR
	bool "ST SPEAr"
	select ARM_AMBA
	select ARCH_REQUIRE_GPIOLIB
963
	select CLKDEV_LOOKUP
964
	select CLKSRC_MMIO
965 966 967 968 969
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	help
	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).

970 971 972 973 974 975 976 977 978 979
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.
980

981 982
config ARCH_ZYNQ
	bool "Xilinx Zynq ARM Cortex A9 Platform"
983 984 985
	select CPU_V7
	select GENERIC_CLOCKEVENTS
	select CLKDEV_LOOKUP
986 987 988
	select ARM_GIC
	select ARM_AMBA
	select ICST
989
	select MIGHT_HAVE_CACHE_L2X0
990 991
	select USE_OF
	help
992
	  Support for Xilinx Zynq ARM Cortex A9 Platform
L
Linus Torvalds 已提交
993 994
endchoice

995 996 997 998 999
#
# 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.
#
1000 1001 1002 1003
source "arch/arm/mach-at91/Kconfig"

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

L
Linus Torvalds 已提交
1004 1005
source "arch/arm/mach-clps711x/Kconfig"

1006 1007
source "arch/arm/mach-cns3xxx/Kconfig"

1008 1009 1010 1011
source "arch/arm/mach-davinci/Kconfig"

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

1012 1013
source "arch/arm/mach-ep93xx/Kconfig"

L
Linus Torvalds 已提交
1014 1015
source "arch/arm/mach-footbridge/Kconfig"

1016 1017
source "arch/arm/mach-gemini/Kconfig"

1018 1019
source "arch/arm/mach-h720x/Kconfig"

L
Linus Torvalds 已提交
1020 1021
source "arch/arm/mach-integrator/Kconfig"

1022 1023 1024
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
L
Linus Torvalds 已提交
1025

1026 1027
source "arch/arm/mach-iop13xx/Kconfig"

L
Linus Torvalds 已提交
1028 1029 1030 1031
source "arch/arm/mach-ixp4xx/Kconfig"

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

1032 1033
source "arch/arm/mach-ixp23xx/Kconfig"

1034 1035 1036 1037
source "arch/arm/mach-kirkwood/Kconfig"

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

1038 1039
source "arch/arm/mach-lpc32xx/Kconfig"

1040 1041
source "arch/arm/mach-msm/Kconfig"

1042 1043
source "arch/arm/mach-mv78xx0/Kconfig"

1044
source "arch/arm/plat-mxc/Kconfig"
L
Linus Torvalds 已提交
1045

1046 1047
source "arch/arm/mach-mxs/Kconfig"

1048
source "arch/arm/mach-netx/Kconfig"
1049

1050 1051 1052
source "arch/arm/mach-nomadik/Kconfig"
source "arch/arm/plat-nomadik/Kconfig"

1053 1054 1055
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
L
Linus Torvalds 已提交
1056

1057 1058
source "arch/arm/mach-omap2/Kconfig"

1059
source "arch/arm/mach-orion5x/Kconfig"
1060

1061 1062
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/plat-pxa/Kconfig"
1063

1064 1065 1066 1067 1068
source "arch/arm/mach-mmp/Kconfig"

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

source "arch/arm/mach-sa1100/Kconfig"
1069

1070
source "arch/arm/plat-samsung/Kconfig"
1071
source "arch/arm/plat-s3c24xx/Kconfig"
1072
source "arch/arm/plat-s5p/Kconfig"
1073

1074
source "arch/arm/plat-spear/Kconfig"
1075 1076

if ARCH_S3C2410
L
Linus Torvalds 已提交
1077
source "arch/arm/mach-s3c2410/Kconfig"
1078
source "arch/arm/mach-s3c2412/Kconfig"
Y
Yauhen Kharuzhy 已提交
1079
source "arch/arm/mach-s3c2416/Kconfig"
1080
source "arch/arm/mach-s3c2440/Kconfig"
1081
source "arch/arm/mach-s3c2443/Kconfig"
1082
endif
L
Linus Torvalds 已提交
1083

B
Ben Dooks 已提交
1084
if ARCH_S3C64XX
1085
source "arch/arm/mach-s3c64xx/Kconfig"
B
Ben Dooks 已提交
1086 1087
endif

1088
source "arch/arm/mach-s5p64x0/Kconfig"
1089

1090 1091
source "arch/arm/mach-s5pc100/Kconfig"

1092 1093
source "arch/arm/mach-s5pv210/Kconfig"

1094
source "arch/arm/mach-exynos/Kconfig"
1095

1096
source "arch/arm/mach-shmobile/Kconfig"
1097

1098 1099
source "arch/arm/mach-tegra/Kconfig"

1100
source "arch/arm/mach-u300/Kconfig"
L
Linus Torvalds 已提交
1101

1102
source "arch/arm/mach-ux500/Kconfig"
L
Linus Torvalds 已提交
1103 1104 1105

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

1106
source "arch/arm/mach-vexpress/Kconfig"
1107
source "arch/arm/plat-versatile/Kconfig"
1108

1109 1110
source "arch/arm/mach-vt8500/Kconfig"

1111 1112
source "arch/arm/mach-w90x900/Kconfig"

L
Linus Torvalds 已提交
1113 1114 1115 1116
# Definitions to make life easier
config ARCH_ACORN
	bool

1117 1118
config PLAT_IOP
	bool
M
Mikael Pettersson 已提交
1119
	select GENERIC_CLOCKEVENTS
1120
	select HAVE_SCHED_CLOCK
1121

L
Lennert Buytenhek 已提交
1122 1123
config PLAT_ORION
	bool
1124
	select CLKSRC_MMIO
R
Russell King 已提交
1125
	select GENERIC_IRQ_CHIP
1126
	select HAVE_SCHED_CLOCK
L
Lennert Buytenhek 已提交
1127

1128 1129 1130
config PLAT_PXA
	bool

1131 1132 1133
config PLAT_VERSATILE
	bool

1134 1135
config ARM_TIMER_SP804
	bool
1136
	select CLKSRC_MMIO
1137

L
Linus Torvalds 已提交
1138 1139
source arch/arm/mm/Kconfig

1140 1141 1142 1143 1144
config ARM_NR_BANKS
	int
	default 16 if ARCH_EP93XX
	default 8

1145 1146
config IWMMXT
	bool "Enable iWMMXt support"
1147 1148
	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
1149 1150 1151 1152
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

L
Linus Torvalds 已提交
1153 1154
config XSCALE_PMU
	bool
1155
	depends on CPU_XSCALE
L
Linus Torvalds 已提交
1156 1157
	default y

1158
config CPU_HAS_PMU
1159
	depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
1160
		   (!ARCH_OMAP3 || OMAP3_EMU)
1161 1162 1163
	default y
	bool

1164 1165 1166 1167 1168
config MULTI_IRQ_HANDLER
	bool
	help
	  Allow each machine to specify it's own IRQ handler at run time.

1169 1170 1171 1172
if !MMU
source "arch/arm/Kconfig-nommu"
endif

1173 1174
config ARM_ERRATA_411920
	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1175
	depends on CPU_V6 || CPU_V6K
1176 1177 1178 1179 1180 1181
	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.

1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
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.

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

1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222
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.

1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
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.

1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248
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.

1249
config PL310_ERRATA_588369
1250
	bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
1251
	depends on CACHE_L2X0
1252 1253 1254 1255 1256 1257 1258 1259
	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
1260
	   invalidated as a result of these operations.
1261 1262 1263

config ARM_ERRATA_720789
	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1264
	depends on CPU_V7
1265 1266 1267 1268 1269 1270 1271 1272
	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.
1273

R
Russell King 已提交
1274
config PL310_ERRATA_727915
1275
	bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
R
Russell King 已提交
1276 1277 1278 1279 1280 1281 1282 1283 1284
	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.

1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297
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
	  (r2p0..r2p2) erratum. Under very rare conditions, a faulty
	  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.

1298 1299
config ARM_ERRATA_751472
	bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1300
	depends on CPU_V7
1301 1302 1303 1304 1305 1306 1307
	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.

1308 1309
config PL310_ERRATA_753970
	bool "PL310 errata: cache sync operation may be faulty"
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322
	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.

1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333
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.

1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344
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.

1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
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.

1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370
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.

1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382
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
1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400
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.

1401
# Select ISA DMA controller support
L
Linus Torvalds 已提交
1402 1403
config ISA_DMA
	bool
1404
	select ISA_DMA_API
L
Linus Torvalds 已提交
1405

1406
# Select ISA DMA interface
A
Al Viro 已提交
1407 1408 1409
config ISA_DMA_API
	bool

L
Linus Torvalds 已提交
1410
config PCI
1411
	bool "PCI support" if MIGHT_HAVE_PCI
L
Linus Torvalds 已提交
1412 1413 1414 1415 1416 1417
	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.

1418 1419 1420 1421
config PCI_DOMAINS
	bool
	depends on PCI

1422 1423 1424 1425 1426 1427
config PCI_NANOENGINE
	bool "BSE nanoEngine PCI support"
	depends on SA1100_NANOENGINE
	help
	  Enable PCI on the BSE nanoEngine board.

1428 1429 1430
config PCI_SYSCALL
	def_bool PCI

L
Linus Torvalds 已提交
1431 1432 1433 1434 1435 1436
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

M
Mike Rapoport 已提交
1437 1438 1439 1440 1441 1442
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

L
Linus Torvalds 已提交
1443 1444 1445 1446 1447 1448 1449 1450
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

1451 1452
source "kernel/time/Kconfig"

1453 1454 1455 1456 1457 1458 1459 1460 1461
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
1462
config SMP
1463
	bool "Symmetric Multi-Processing"
1464
	depends on CPU_V6K || CPU_V7
1465
	depends on GENERIC_CLOCKEVENTS
1466
	depends on HAVE_SMP
A
Arnd Bergmann 已提交
1467
	depends on MMU
1468
	select USE_GENERIC_SMP_HELPERS
1469
	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
L
Linus Torvalds 已提交
1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480
	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
1481
	  See also <file:Documentation/x86/i386/IO-APIC.txt>,
L
Linus Torvalds 已提交
1482
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1483
	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
L
Linus Torvalds 已提交
1484 1485 1486

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

1487 1488 1489
config SMP_ON_UP
	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
	depends on EXPERIMENTAL
1490
	depends on SMP && !XIP_KERNEL
1491 1492 1493 1494 1495 1496 1497 1498 1499
	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.

1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524
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.

1525 1526 1527 1528 1529
config HAVE_ARM_SCU
	bool
	help
	  This option enables support for the ARM system coherency unit

1530 1531 1532
config HAVE_ARM_TWD
	bool
	depends on SMP
R
Russell King 已提交
1533
	select TICK_ONESHOT
1534 1535 1536
	help
	  This options enables support for the ARM timer and watchdog unit

1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559
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
1560 1561 1562 1563 1564 1565
config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

1566 1567 1568 1569 1570 1571 1572
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.

1573 1574
config LOCAL_TIMERS
	bool "Use local timer interrupts"
1575
	depends on SMP
1576
	default y
1577
	select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
1578 1579 1580 1581 1582 1583
	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.

1584 1585
config ARCH_NR_GPIO
	int
1586
	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
1587
	default 350 if ARCH_U8500
1588 1589 1590 1591 1592 1593
	default 0
	help
	  Maximum number of GPIOs in the system.

	  If unsure, leave the default value.

1594
source kernel/Kconfig.preempt
L
Linus Torvalds 已提交
1595

1596 1597
config HZ
	int
1598
	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
K
Kukjin Kim 已提交
1599
		ARCH_S5PV210 || ARCH_EXYNOS4
1600
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1601
	default AT91_TIMER_HZ if ARCH_AT91
1602
	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1603 1604
	default 100

1605
config THUMB2_KERNEL
1606
	bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
1607
	depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
1608 1609
	select AEABI
	select ARM_ASM_UNIFIED
1610
	select ARM_UNWIND
1611 1612 1613 1614 1615 1616 1617
	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.

1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648
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.

1649 1650 1651
config ARM_ASM_UNIFIED
	bool

1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666
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.

1667
config OABI_COMPAT
1668
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1669
	depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683
	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.

1684
config ARCH_HAS_HOLES_MEMORYMODEL
1685 1686
	bool

1687 1688 1689
config ARCH_SPARSEMEM_ENABLE
	bool

1690 1691 1692
config ARCH_SPARSEMEM_DEFAULT
	def_bool ARCH_SPARSEMEM_ENABLE

1693
config ARCH_SELECT_MEMORY_MODEL
R
Russell King 已提交
1694
	def_bool ARCH_SPARSEMEM_ENABLE
Y
Yasunori Goto 已提交
1695

1696 1697 1698
config HAVE_ARCH_PFN_VALID
	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM

N
Nicolas Pitre 已提交
1699
config HIGHMEM
1700 1701
	bool "High Memory Support"
	depends on MMU
N
Nicolas Pitre 已提交
1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715
	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
1716 1717 1718 1719
config HIGHPTE
	bool "Allocate 2nd-level pagetables from highmem"
	depends on HIGHMEM

1720 1721
config HW_PERF_EVENTS
	bool "Enable hardware performance counter support for perf events"
1722
	depends on PERF_EVENTS && CPU_HAS_PMU
1723 1724 1725 1726 1727
	default y
	help
	  Enable hardware performance counter support for perf events. If
	  disabled, perf events will use software events only.

1728 1729
source "mm/Kconfig"

1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745
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
1746 1747
config LEDS
	bool "Timer and CPU usage LEDs"
1748
	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1749
		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
L
Linus Torvalds 已提交
1750 1751
		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1752
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1753
		   ARCH_AT91 || ARCH_DAVINCI || \
1754
		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
L
Linus Torvalds 已提交
1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767
	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
1768 1769
			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			    || MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1770
	depends on LEDS
1771
	depends on !GENERIC_CLOCKEVENTS
L
Linus Torvalds 已提交
1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785
	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
1786 1787 1788
			!ARCH_OMAP) \
			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			|| MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800
	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
1801
	depends on CPU_CP15_MMU
L
Linus Torvalds 已提交
1802
	default y if !ARCH_EBSA110
1803
	select HAVE_PROC_CPU if PROC_FS
L
Linus Torvalds 已提交
1804
	help
1805
	  ARM processors cannot fetch/store information which is not
L
Linus Torvalds 已提交
1806 1807 1808 1809 1810 1811 1812
	  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.

1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828
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
1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842
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.

1843 1844
config CC_STACKPROTECTOR
	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1845
	depends on EXPERIMENTAL
1846 1847 1848 1849 1850 1851 1852 1853 1854 1855
	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.

1856 1857 1858 1859 1860 1861
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
1862 1863 1864 1865
endmenu

menu "Boot options"

G
Grant Likely 已提交
1866 1867 1868 1869
config USE_OF
	bool "Flattened Device Tree support"
	select OF
	select OF_EARLY_FLATTREE
1870
	select IRQ_DOMAIN
G
Grant Likely 已提交
1871 1872 1873
	help
	  Include support for flattened device tree machine descriptions.

L
Linus Torvalds 已提交
1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890
# 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
1891 1892 1893 1894 1895 1896
	  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
1897 1898 1899 1900 1901 1902 1903 1904 1905 1906

	  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.

1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923
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

1924 1925 1926
config ZBOOT_ROM_MMCIF
	bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
	help
1927 1928 1929 1930 1931 1932 1933 1934
	  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
1935

1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955
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.

1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967
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
1968 1969 1970 1971 1972 1973 1974 1975 1976 1977
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).

1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994
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.

1995 1996 1997 1998 1999 2000 2001
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.
2002
endchoice
2003

L
Linus Torvalds 已提交
2004 2005
config XIP_KERNEL
	bool "Kernel Execute-In-Place from ROM"
2006
	depends on !ZBOOT_ROM && !ARM_LPAE
L
Linus Torvalds 已提交
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033
	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
2034 2035
config KEXEC
	bool "Kexec system call (EXPERIMENTAL)"
2036
	depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
R
Richard Purdie 已提交
2037 2038 2039
	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
2040
	  but it is independent of the system firmware.   And like a reboot
R
Richard Purdie 已提交
2041 2042 2043 2044 2045 2046 2047
	  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.

2048 2049
config ATAGS_PROC
	bool "Export atags in procfs"
2050 2051
	depends on KEXEC
	default y
2052 2053 2054 2055
	help
	  Should the atags used to boot the kernel be exported in an "atags"
	  file in procfs. Useful with kexec.

2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068
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

2069 2070 2071 2072 2073 2074 2075 2076 2077 2078
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
2079 2080
endmenu

2081
menu "CPU Power Management"
L
Linus Torvalds 已提交
2082

2083
if ARCH_HAS_CPUFREQ
L
Linus Torvalds 已提交
2084 2085 2086

source "drivers/cpufreq/Kconfig"

Y
Yong Shen 已提交
2087 2088 2089 2090 2091 2092
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
2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109
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
2110 2111 2112 2113
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
2114
	select CPU_FREQ_TABLE
R
Russell King 已提交
2115 2116
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

B
Ben Dooks 已提交
2117 2118 2119 2120 2121 2122
config CPU_FREQ_S3C
	bool
	help
	  Internal configuration node for common cpufreq on Samsung SoC

config CPU_FREQ_S3C24XX
2123
	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
B
Ben Dooks 已提交
2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134
	depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
	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
2135
	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
B
Ben Dooks 已提交
2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156
	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

2157 2158 2159 2160 2161 2162
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
2163 2164
endif

2165 2166 2167 2168
source "drivers/cpuidle/Kconfig"

endmenu

L
Linus Torvalds 已提交
2169 2170 2171 2172 2173 2174
menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
2175
	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
L
Linus Torvalds 已提交
2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186
	---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"
2187
	depends on FPE_NWFPE
L
Linus Torvalds 已提交
2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198
	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)"
2199
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
L
Linus Torvalds 已提交
2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212
	---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"
2213
	depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
L
Linus Torvalds 已提交
2214 2215 2216 2217 2218 2219 2220 2221 2222
	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.

2223 2224 2225 2226 2227
config VFPv3
	bool
	depends on VFP
	default y if CPU_V7

2228 2229 2230 2231 2232 2233 2234
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
2235 2236 2237 2238 2239 2240 2241 2242
endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
2243
	depends on !AEABI
L
Linus Torvalds 已提交
2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254
	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
2255
source "kernel/power/Kconfig"
L
Linus Torvalds 已提交
2256

J
Johannes Berg 已提交
2257
config ARCH_SUSPEND_POSSIBLE
2258
	depends on !ARCH_S5PC100
2259 2260
	depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
		CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
J
Johannes Berg 已提交
2261 2262
	def_bool y

2263 2264 2265
config ARM_CPU_SUSPEND
	def_bool PM_SLEEP

L
Linus Torvalds 已提交
2266 2267
endmenu

2268 2269
source "net/Kconfig"

2270
source "drivers/Kconfig"
L
Linus Torvalds 已提交
2271 2272 2273 2274 2275 2276 2277 2278 2279 2280

source "fs/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"