Kconfig 62.9 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
A
Adrian Bunk 已提交
6
	select HAVE_IDE
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)
J
Jason Wessel 已提交
12
	select HAVE_ARCH_KGDB
13
	select HAVE_KPROBES if !XIP_KERNEL
14
	select HAVE_KRETPROBES if (HAVE_KPROBES)
15
	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
16 17
	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
18
	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
19
	select HAVE_GENERIC_DMA_COHERENT
20 21
	select HAVE_KERNEL_GZIP
	select HAVE_KERNEL_LZO
22
	select HAVE_KERNEL_LZMA
23
	select HAVE_IRQ_WORK
24 25
	select HAVE_PERF_EVENTS
	select PERF_USE_VMALLOC
26
	select HAVE_REGS_AND_STACK_ACCESS_API
27
	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
28
	select HAVE_C_RECORDMCOUNT
29 30
	select HAVE_GENERIC_HARDIRQS
	select HAVE_SPARSE_IRQ
31
	select GENERIC_IRQ_SHOW
32
	select CPU_PM if (SUSPEND || CPU_IDLE)
L
Linus Torvalds 已提交
33 34
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
35
	  licensed by ARM Ltd and targeted at embedded applications and
L
Linus Torvalds 已提交
36
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
37
	  manufactured, but legacy ARM-based PC hardware remains popular in
L
Linus Torvalds 已提交
38 39 40
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

41 42 43
config ARM_HAS_SG_CHAIN
	bool

R
Russell King 已提交
44 45 46
config HAVE_PWM
	bool

47 48 49
config MIGHT_HAVE_PCI
	bool

50 51 52
config SYS_SUPPORTS_APM_EMULATION
	bool

53 54 55
config HAVE_SCHED_CLOCK
	bool

D
David Brownell 已提交
56 57 58
config GENERIC_GPIO
	bool

59 60 61
config ARCH_USES_GETTIMEOFFSET
	bool
	default n
62

63 64 65
config GENERIC_CLOCKEVENTS
	bool

66 67 68
config GENERIC_CLOCKEVENTS_BROADCAST
	bool
	depends on GENERIC_CLOCKEVENTS
69
	default y if SMP
70

71 72 73 74
config KTIME_SCALAR
	bool
	default y

75 76 77 78
config HAVE_TCM
	bool
	select GENERIC_ALLOCATOR

79 80 81
config HAVE_PROC_CPU
	bool

A
Al Viro 已提交
82 83 84
config NO_IOPORT
	bool

L
Linus Torvalds 已提交
85 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
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.

111 112 113 114
config STACKTRACE_SUPPORT
	bool
	default y

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

120 121 122 123
config LOCKDEP_SUPPORT
	bool
	default y

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

128 129 130 131 132 133 134 135
config HARDIRQS_SW_RESEND
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

N
Nick Piggin 已提交
136 137 138 139 140
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

L
Linus Torvalds 已提交
141 142 143 144 145 146 147
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

148 149 150 151 152 153
config ARCH_HAS_ILOG2_U32
	bool

config ARCH_HAS_ILOG2_U64
	bool

154 155 156 157 158 159 160
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.

161 162 163
config ARCH_HAS_CPU_IDLE_WAIT
       def_bool y

164 165 166 167
config GENERIC_HWEIGHT
	bool
	default y

L
Linus Torvalds 已提交
168 169 170 171
config GENERIC_CALIBRATE_DELAY
	bool
	default y

172 173 174
config ARCH_MAY_HAVE_PC_FDC
	bool

175 176 177
config ZONE_DMA
	bool

178 179 180
config NEED_DMA_MAP_STATE
       def_bool y

L
Linus Torvalds 已提交
181 182 183 184 185 186
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

187 188 189
config ARCH_MTD_XIP
	bool

190 191
config VECTORS_BASE
	hex
192
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
193 194 195 196 197
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

198
config ARM_PATCH_PHYS_VIRT
199 200
	bool "Patch physical to virtual translations at runtime" if EMBEDDED
	default y
N
Nicolas Pitre 已提交
201
	depends on !XIP_KERNEL && MMU
202 203
	depends on !ARCH_REALVIEW || !SPARSEMEM
	help
204 205 206
	  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.
207

208
	  This can only be used with non-XIP MMU kernels where the base
209
	  of physical memory is at a 16MB boundary.
210

211 212 213
	  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.
214

215
config NEED_MACH_MEMORY_H
216
	bool
217
	help
218 219 220
	  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.
221

222 223
config PHYS_OFFSET
	hex "Physical address of main memory"
224
	depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
225
	help
226 227
	  Please provide the physical address corresponding to the
	  location of main memory in your system.
228

L
Linus Torvalds 已提交
229 230
source "init/Kconfig"

231 232
source "kernel/Kconfig.freezer"

L
Linus Torvalds 已提交
233 234
menu "System Type"

235 236 237 238 239 240 241
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'.

242 243 244 245
#
# 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
246 247
choice
	prompt "ARM system type"
248
	default ARCH_VERSATILE
L
Linus Torvalds 已提交
249

250 251 252
config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
253
	select ARCH_HAS_CPUFREQ
254
	select CLKDEV_LOOKUP
255
	select HAVE_MACH_CLKDEV
256
	select ICST
257
	select GENERIC_CLOCKEVENTS
258
	select PLAT_VERSATILE
259
	select PLAT_VERSATILE_FPGA_IRQ
260
	select NEED_MACH_MEMORY_H
261 262 263 264 265 266
	help
	  Support for ARM's Integrator platform.

config ARCH_REALVIEW
	bool "ARM Ltd. RealView family"
	select ARM_AMBA
267
	select CLKDEV_LOOKUP
268
	select HAVE_MACH_CLKDEV
269
	select ICST
270
	select GENERIC_CLOCKEVENTS
271
	select ARCH_WANT_OPTIONAL_GPIOLIB
272
	select PLAT_VERSATILE
273
	select PLAT_VERSATILE_CLCD
274
	select ARM_TIMER_SP804
275
	select GPIO_PL061 if GPIOLIB
276
	select NEED_MACH_MEMORY_H
277 278 279 280 281 282 283
	help
	  This enables support for ARM Ltd RealView boards.

config ARCH_VERSATILE
	bool "ARM Ltd. Versatile family"
	select ARM_AMBA
	select ARM_VIC
284
	select CLKDEV_LOOKUP
285
	select HAVE_MACH_CLKDEV
286
	select ICST
287
	select GENERIC_CLOCKEVENTS
288
	select ARCH_WANT_OPTIONAL_GPIOLIB
289
	select PLAT_VERSATILE
290
	select PLAT_VERSATILE_CLCD
291
	select PLAT_VERSATILE_FPGA_IRQ
292
	select ARM_TIMER_SP804
293 294 295
	help
	  This enables support for ARM Ltd Versatile board.

296 297 298 299 300
config ARCH_VEXPRESS
	bool "ARM Ltd. Versatile Express family"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_TIMER_SP804
301
	select CLKDEV_LOOKUP
302
	select HAVE_MACH_CLKDEV
303 304
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
305
	select HAVE_PATA_PLATFORM
306 307
	select ICST
	select PLAT_VERSATILE
308
	select PLAT_VERSATILE_CLCD
309 310 311
	help
	  This enables support for the ARM Ltd Versatile Express boards.

312 313
config ARCH_AT91
	bool "Atmel AT91"
314
	select ARCH_REQUIRE_GPIOLIB
D
David Brownell 已提交
315
	select HAVE_CLK
316
	select CLKDEV_LOOKUP
317
	help
318 319
	  This enables support for systems based on the Atmel AT91RM9200,
	  AT91SAM9 and AT91CAP9 processors.
320

321 322 323 324 325
config ARCH_BCMRING
	bool "Broadcom BCMRING"
	depends on MMU
	select CPU_V6
	select ARM_AMBA
326
	select ARM_TIMER_SP804
327
	select CLKDEV_LOOKUP
328 329 330 331 332
	select GENERIC_CLOCKEVENTS
	select ARCH_WANT_OPTIONAL_GPIOLIB
	help
	  Support for Broadcom's BCMRing platform.

L
Linus Torvalds 已提交
333
config ARCH_CLPS711X
334
	bool "Cirrus Logic CLPS711x/EP721x-based"
335
	select CPU_ARM720T
336
	select ARCH_USES_GETTIMEOFFSET
337
	select NEED_MACH_MEMORY_H
338 339
	help
	  Support for Cirrus Logic 711x/721x based boards.
L
Linus Torvalds 已提交
340

341 342
config ARCH_CNS3XXX
	bool "Cavium Networks CNS3XXX family"
I
Imre Kaloz 已提交
343
	select CPU_V6K
344 345
	select GENERIC_CLOCKEVENTS
	select ARM_GIC
346
	select MIGHT_HAVE_PCI
347
	select PCI_DOMAINS if PCI
348 349 350
	help
	  Support for Cavium Networks CNS3XXX platform.

351 352 353 354
config ARCH_GEMINI
	bool "Cortina Systems Gemini"
	select CPU_FA526
	select ARCH_REQUIRE_GPIOLIB
355
	select ARCH_USES_GETTIMEOFFSET
356 357 358
	help
	  Support for the Cortina Systems Gemini family SoCs

A
Arnd Bergmann 已提交
359 360 361 362 363 364 365 366 367 368 369 370 371
config ARCH_PRIMA2
	bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
	select CPU_V7
	select GENERIC_TIME
	select NO_IOPORT
	select GENERIC_CLOCKEVENTS
	select CLKDEV_LOOKUP
	select GENERIC_IRQ_CHIP
	select USE_OF
	select ZONE_DMA
	help
          Support for CSR SiRFSoC ARM Cortex A9 Platform

L
Linus Torvalds 已提交
372 373
config ARCH_EBSA110
	bool "EBSA-110"
374
	select CPU_SA110
375
	select ISA
376
	select NO_IOPORT
377
	select ARCH_USES_GETTIMEOFFSET
378
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
379 380
	help
	  This is an evaluation board for the StrongARM processor available
381
	  from Digital. It has limited hardware on-board, including an
L
Linus Torvalds 已提交
382 383 384
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

385 386
config ARCH_EP93XX
	bool "EP93xx-based"
387
	select CPU_ARM920T
388 389
	select ARM_AMBA
	select ARM_VIC
390
	select CLKDEV_LOOKUP
M
Michael Buesch 已提交
391
	select ARCH_REQUIRE_GPIOLIB
392
	select ARCH_HAS_HOLES_MEMORYMODEL
393
	select ARCH_USES_GETTIMEOFFSET
394
	select NEED_MEMORY_H
395 396 397
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

L
Linus Torvalds 已提交
398 399
config ARCH_FOOTBRIDGE
	bool "FootBridge"
400
	select CPU_SA110
L
Linus Torvalds 已提交
401
	select FOOTBRIDGE
402
	select GENERIC_CLOCKEVENTS
403
	select NEED_MACH_MEMORY_H
404 405 406
	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
407

408 409 410 411
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
412
	select CLKDEV_LOOKUP
413
	select CLKSRC_MMIO
414
	select GENERIC_IRQ_CHIP
415
	select HAVE_SCHED_CLOCK
416 417 418
	help
	  Support for Freescale MXC/iMX-based family of processors

419 420 421 422
config ARCH_MXS
	bool "Freescale MXS-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
423
	select CLKDEV_LOOKUP
424
	select CLKSRC_MMIO
425 426 427
	help
	  Support for Freescale MXS-based family of processors

428 429
config ARCH_NETX
	bool "Hilscher NetX based"
430
	select CLKSRC_MMIO
431
	select CPU_ARM926T
432
	select ARM_VIC
433
	select GENERIC_CLOCKEVENTS
434
	help
435 436 437 438
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
439
	select CPU_ARM720T
440
	select ISA_DMA_API
441
	select ARCH_USES_GETTIMEOFFSET
442 443 444
	help
	  This enables support for systems based on the Hynix HMS720x

445 446 447
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
448
	select CPU_XSC3
449 450 451
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
452
	select VMSPLIT_1G
453
	select NEED_MACH_MEMORY_H
454 455 456
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

457 458
config ARCH_IOP32X
	bool "IOP32x-based"
459
	depends on MMU
460
	select CPU_XSCALE
461
	select PLAT_IOP
462
	select PCI
463
	select ARCH_REQUIRE_GPIOLIB
464
	help
465 466 467 468 469 470
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
471
	select CPU_XSCALE
472
	select PLAT_IOP
473
	select PCI
474
	select ARCH_REQUIRE_GPIOLIB
475 476
	help
	  Support for Intel's IOP33X (XScale) family of processors.
L
Linus Torvalds 已提交
477

478 479
config ARCH_IXP23XX
 	bool "IXP23XX-based"
480
	depends on MMU
481
	select CPU_XSC3
482
 	select PCI
483
	select ARCH_USES_GETTIMEOFFSET
484
	select NEED_MACH_MEMORY_H
485
	help
486
	  Support for Intel's IXP23xx (XScale) family of processors.
L
Linus Torvalds 已提交
487 488 489

config ARCH_IXP2000
	bool "IXP2400/2800-based"
490
	depends on MMU
491
	select CPU_XSCALE
492
	select PCI
493
	select ARCH_USES_GETTIMEOFFSET
494
	select NEED_MACH_MEMORY_H
495 496
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
L
Linus Torvalds 已提交
497

498 499
config ARCH_IXP4XX
	bool "IXP4xx-based"
500
	depends on MMU
501
	select CLKSRC_MMIO
502
	select CPU_XSCALE
503
	select GENERIC_GPIO
504
	select GENERIC_CLOCKEVENTS
505
	select HAVE_SCHED_CLOCK
506
	select MIGHT_HAVE_PCI
R
Russell King 已提交
507
	select DMABOUNCE if PCI
508
	help
509
	  Support for Intel's IXP4XX (XScale) family of processors.
510

511 512
config ARCH_DOVE
	bool "Marvell Dove"
513
	select CPU_V7
514 515 516 517 518 519 520
	select PCI
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the Marvell Dove SoC 88AP510

521 522
config ARCH_KIRKWOOD
	bool "Marvell Kirkwood"
523
	select CPU_FEROCEON
524
	select PCI
525
	select ARCH_REQUIRE_GPIOLIB
526 527 528 529 530 531
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell Kirkwood series SoCs:
	  88F6180, 88F6192 and 88F6281.

532 533
config ARCH_LPC32XX
	bool "NXP LPC32XX"
534
	select CLKSRC_MMIO
535 536 537 538 539
	select CPU_ARM926T
	select ARCH_REQUIRE_GPIOLIB
	select HAVE_IDE
	select ARM_AMBA
	select USB_ARCH_HAS_OHCI
540
	select CLKDEV_LOOKUP
541 542 543 544 545
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	help
	  Support for the NXP LPC32XX family of processors

546 547
config ARCH_MV78XX0
	bool "Marvell MV78xx0"
548
	select CPU_FEROCEON
549
	select PCI
550
	select ARCH_REQUIRE_GPIOLIB
551 552 553 554 555 556
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell MV78xx0 series SoCs:
	  MV781x0, MV782x0.

557
config ARCH_ORION5X
558 559
	bool "Marvell Orion"
	depends on MMU
560
	select CPU_FEROCEON
T
Tzachi Perelstein 已提交
561
	select PCI
562
	select ARCH_REQUIRE_GPIOLIB
563
	select GENERIC_CLOCKEVENTS
L
Lennert Buytenhek 已提交
564
	select PLAT_ORION
565
	help
566
	  Support for the following Marvell Orion 5x series SoCs:
567
	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
568
	  Orion-2 (5281), Orion-1-90 (6183).
569

570
config ARCH_MMP
571
	bool "Marvell PXA168/910/MMP2"
572 573
	depends on MMU
	select ARCH_REQUIRE_GPIOLIB
574
	select CLKDEV_LOOKUP
575
	select GENERIC_CLOCKEVENTS
576
	select HAVE_SCHED_CLOCK
577 578
	select TICK_ONESHOT
	select PLAT_PXA
H
Haojian Zhuang 已提交
579
	select SPARSE_IRQ
580
	help
581
	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
582 583 584 585

config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
	select CPU_ARM922T
586
	select ARCH_REQUIRE_GPIOLIB
587
	select ARCH_USES_GETTIMEOFFSET
588
	select NEED_MACH_MEMORY_H
589 590 591 592 593 594 595
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

config ARCH_W90X900
	bool "Nuvoton W90X900 CPU"
	select CPU_ARM926T
596
	select ARCH_REQUIRE_GPIOLIB
597
	select CLKDEV_LOOKUP
598
	select CLKSRC_MMIO
599
	select GENERIC_CLOCKEVENTS
600
	help
601 602 603 604 605 606 607
	  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>
608

609 610 611
config ARCH_NUC93X
	bool "Nuvoton NUC93X CPU"
	select CPU_ARM926T
612
	select CLKDEV_LOOKUP
613 614 615 616
	help
	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
	  low-power and high performance MPEG-4/JPEG multimedia controller chip.

617 618
config ARCH_TEGRA
	bool "NVIDIA Tegra"
R
Russell King 已提交
619
	select CLKDEV_LOOKUP
620
	select CLKSRC_MMIO
621 622 623 624
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	select GENERIC_GPIO
	select HAVE_CLK
625
	select HAVE_SCHED_CLOCK
C
Colin Cross 已提交
626
	select ARCH_HAS_CPUFREQ
627 628 629 630
	help
	  This enables support for NVIDIA Tegra based systems (Tegra APX,
	  Tegra 6xx and Tegra 2 series).

631 632
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
633
	select CPU_ARM926T
634
	select CLKDEV_LOOKUP
635
	select ARCH_USES_GETTIMEOFFSET
636 637 638
	help
	  This enables support for Philips PNX4008 mobile platform.

L
Linus Torvalds 已提交
639
config ARCH_PXA
E
eric miao 已提交
640
	bool "PXA2xx/PXA3xx-based"
641
	depends on MMU
642
	select ARCH_MTD_XIP
643
	select ARCH_HAS_CPUFREQ
644
	select CLKDEV_LOOKUP
645
	select CLKSRC_MMIO
M
Michael Buesch 已提交
646
	select ARCH_REQUIRE_GPIOLIB
647
	select GENERIC_CLOCKEVENTS
648
	select HAVE_SCHED_CLOCK
649
	select TICK_ONESHOT
650
	select PLAT_PXA
651
	select SPARSE_IRQ
E
Eric Miao 已提交
652
	select AUTO_ZRELADDR
653
	select MULTI_IRQ_HANDLER
654
	help
E
eric miao 已提交
655
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
L
Linus Torvalds 已提交
656

657 658
config ARCH_MSM
	bool "Qualcomm MSM"
659
	select HAVE_CLK
660
	select GENERIC_CLOCKEVENTS
P
Pavel Machek 已提交
661
	select ARCH_REQUIRE_GPIOLIB
S
Stephen Boyd 已提交
662
	select CLKDEV_LOOKUP
663
	help
664 665 666 667 668
	  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).
669

670
config ARCH_SHMOBILE
671 672
	bool "Renesas SH-Mobile / R-Mobile"
	select HAVE_CLK
P
Paul Mundt 已提交
673
	select CLKDEV_LOOKUP
674
	select HAVE_MACH_CLKDEV
675 676 677
	select GENERIC_CLOCKEVENTS
	select NO_IOPORT
	select SPARSE_IRQ
678
	select MULTI_IRQ_HANDLER
679
	select PM_GENERIC_DOMAINS if PM
680
	select NEED_MACH_MEMORY_H
681
	help
682
	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
683

L
Linus Torvalds 已提交
684 685 686 687 688
config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
689
	select ARCH_MAY_HAVE_PC_FDC
690
	select HAVE_PATA_PLATFORM
691
	select ISA_DMA_API
A
Al Viro 已提交
692
	select NO_IOPORT
693
	select ARCH_SPARSEMEM_ENABLE
694
	select ARCH_USES_GETTIMEOFFSET
695
	select NEED_MACH_MEMORY_H
L
Linus Torvalds 已提交
696 697 698 699 700 701
	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"
702
	select CLKSRC_MMIO
703
	select CPU_SA1100
704
	select ISA
705
	select ARCH_SPARSEMEM_ENABLE
706
	select ARCH_MTD_XIP
707
	select ARCH_HAS_CPUFREQ
R
Russell King 已提交
708
	select CPU_FREQ
709
	select GENERIC_CLOCKEVENTS
710
	select HAVE_CLK
711
	select HAVE_SCHED_CLOCK
712
	select TICK_ONESHOT
M
Michael Buesch 已提交
713
	select ARCH_REQUIRE_GPIOLIB
714
	select NEED_MACH_MEMORY_H
715 716
	help
	  Support for StrongARM 11x0 based boards.
L
Linus Torvalds 已提交
717 718

config ARCH_S3C2410
719
	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
D
David Brownell 已提交
720
	select GENERIC_GPIO
B
Ben Dooks 已提交
721
	select ARCH_HAS_CPUFREQ
722
	select HAVE_CLK
723
	select CLKDEV_LOOKUP
724
	select ARCH_USES_GETTIMEOFFSET
725
	select HAVE_S3C2410_I2C if I2C
L
Linus Torvalds 已提交
726 727 728
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
729
	  the Samsung SMDK2410 development board (and derivatives).
L
Linus Torvalds 已提交
730

731
	  Note, the S3C2416 and the S3C2450 are so close that they even share
L
Lucas De Marchi 已提交
732
	  the same SoC ID code. This means that there is no separate machine
733 734
	  directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.

B
Ben Dooks 已提交
735 736
config ARCH_S3C64XX
	bool "Samsung S3C64XX"
737
	select PLAT_SAMSUNG
738 739
	select CPU_V6
	select ARM_VIC
B
Ben Dooks 已提交
740
	select HAVE_CLK
741
	select CLKDEV_LOOKUP
742
	select NO_IOPORT
743
	select ARCH_USES_GETTIMEOFFSET
744
	select ARCH_HAS_CPUFREQ
745 746 747 748 749 750 751 752 753 754 755
	select ARCH_REQUIRE_GPIOLIB
	select SAMSUNG_CLKSRC
	select SAMSUNG_IRQ_VIC_TIMER
	select SAMSUNG_IRQ_UART
	select S3C_GPIO_TRACK
	select S3C_GPIO_PULL_UPDOWN
	select S3C_GPIO_CFG_S3C24XX
	select S3C_GPIO_CFG_S3C64XX
	select S3C_DEV_NAND
	select USB_ARCH_HAS_OHCI
	select SAMSUNG_GPIOLIB_4BIT
756
	select HAVE_S3C2410_I2C if I2C
757
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
B
Ben Dooks 已提交
758 759 760
	help
	  Samsung S3C64XX series based systems

761 762
config ARCH_S5P64X0
	bool "Samsung S5P6440 S5P6450"
763 764 765
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
766
	select CLKDEV_LOOKUP
767
	select CLKSRC_MMIO
768
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
769 770
	select GENERIC_CLOCKEVENTS
	select HAVE_SCHED_CLOCK
771
	select HAVE_S3C2410_I2C if I2C
772
	select HAVE_S3C_RTC if RTC_CLASS
773
	help
774 775
	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
	  SMDK6450.
776

777 778
config ARCH_S5PC100
	bool "Samsung S5PC100"
779 780
	select GENERIC_GPIO
	select HAVE_CLK
781
	select CLKDEV_LOOKUP
782
	select CPU_V7
783
	select ARM_L1_CACHE_SHIFT_6
784
	select ARCH_USES_GETTIMEOFFSET
785
	select HAVE_S3C2410_I2C if I2C
786
	select HAVE_S3C_RTC if RTC_CLASS
787
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
788
	help
789
	  Samsung S5PC100 series based systems
790

791 792 793
config ARCH_S5PV210
	bool "Samsung S5PV210/S5PC110"
	select CPU_V7
794
	select ARCH_SPARSEMEM_ENABLE
795
	select ARCH_HAS_HOLES_MEMORYMODEL
796 797
	select GENERIC_GPIO
	select HAVE_CLK
798
	select CLKDEV_LOOKUP
799
	select CLKSRC_MMIO
800
	select ARM_L1_CACHE_SHIFT_6
801
	select ARCH_HAS_CPUFREQ
802 803
	select GENERIC_CLOCKEVENTS
	select HAVE_SCHED_CLOCK
804
	select HAVE_S3C2410_I2C if I2C
805
	select HAVE_S3C_RTC if RTC_CLASS
806
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
807
	select NEED_MACH_MEMORY_H
808 809 810
	help
	  Samsung S5PV210/S5PC110 series based systems

811 812
config ARCH_EXYNOS4
	bool "Samsung EXYNOS4"
813
	select CPU_V7
814
	select ARCH_SPARSEMEM_ENABLE
815
	select ARCH_HAS_HOLES_MEMORYMODEL
816 817
	select GENERIC_GPIO
	select HAVE_CLK
818
	select CLKDEV_LOOKUP
819
	select ARCH_HAS_CPUFREQ
820
	select GENERIC_CLOCKEVENTS
821
	select HAVE_S3C_RTC if RTC_CLASS
822
	select HAVE_S3C2410_I2C if I2C
823
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
824
	select NEED_MACH_MEMORY_H
825
	help
826
	  Samsung EXYNOS4 series based systems
827

L
Linus Torvalds 已提交
828 829
config ARCH_SHARK
	bool "Shark"
830
	select CPU_SA110
831 832
	select ISA
	select ISA_DMA
833
	select ZONE_DMA
834
	select PCI
835
	select ARCH_USES_GETTIMEOFFSET
836
	select NEED_MACH_MEMORY_H
837 838 839
	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
840

H
Hans J. Koch 已提交
841 842
config ARCH_TCC_926
	bool "Telechips TCC ARM926-based systems"
843
	select CLKSRC_MMIO
H
Hans J. Koch 已提交
844 845
	select CPU_ARM926T
	select HAVE_CLK
846
	select CLKDEV_LOOKUP
H
Hans J. Koch 已提交
847 848 849 850
	select GENERIC_CLOCKEVENTS
	help
	  Support for Telechips TCC ARM926-based systems.

851 852 853
config ARCH_U300
	bool "ST-Ericsson U300 Series"
	depends on MMU
854
	select CLKSRC_MMIO
855
	select CPU_ARM926T
856
	select HAVE_SCHED_CLOCK
857
	select HAVE_TCM
858 859 860
	select ARM_AMBA
	select ARM_VIC
	select GENERIC_CLOCKEVENTS
861
	select CLKDEV_LOOKUP
862
	select HAVE_MACH_CLKDEV
863
	select GENERIC_GPIO
864
	select ARCH_REQUIRE_GPIOLIB
865
	select NEED_MACH_MEMORY_H
866 867 868
	help
	  Support for ST-Ericsson U300 series mobile platforms.

869 870 871 872 873
config ARCH_U8500
	bool "ST-Ericsson U8500 Series"
	select CPU_V7
	select ARM_AMBA
	select GENERIC_CLOCKEVENTS
874
	select CLKDEV_LOOKUP
875
	select ARCH_REQUIRE_GPIOLIB
876
	select ARCH_HAS_CPUFREQ
877 878 879 880 881 882 883 884
	help
	  Support for ST-Ericsson's Ux500 architecture

config ARCH_NOMADIK
	bool "STMicroelectronics Nomadik"
	select ARM_AMBA
	select ARM_VIC
	select CPU_ARM926T
885
	select CLKDEV_LOOKUP
886 887 888 889 890
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
	help
	  Support for the Nomadik platform by ST-Ericsson

891 892 893
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_CLOCKEVENTS
894
	select ARCH_REQUIRE_GPIOLIB
895
	select ZONE_DMA
896
	select HAVE_IDE
897
	select CLKDEV_LOOKUP
D
David Brownell 已提交
898
	select GENERIC_ALLOCATOR
R
Russell King 已提交
899
	select GENERIC_IRQ_CHIP
900
	select ARCH_HAS_HOLES_MEMORYMODEL
901 902 903
	help
	  Support for TI's DaVinci platform.

904 905
config ARCH_OMAP
	bool "TI OMAP"
906
	select HAVE_CLK
M
Michael Buesch 已提交
907
	select ARCH_REQUIRE_GPIOLIB
908
	select ARCH_HAS_CPUFREQ
909
	select CLKSRC_MMIO
910
	select GENERIC_CLOCKEVENTS
911
	select HAVE_SCHED_CLOCK
912
	select ARCH_HAS_HOLES_MEMORYMODEL
913
	help
914
	  Support for TI's OMAP platform (OMAP1/2/3/4).
915

916 917 918 919
config PLAT_SPEAR
	bool "ST SPEAr"
	select ARM_AMBA
	select ARCH_REQUIRE_GPIOLIB
920
	select CLKDEV_LOOKUP
921
	select CLKSRC_MMIO
922 923 924 925 926
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	help
	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).

927 928 929 930 931 932 933 934 935 936
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.
937

938 939
config ARCH_ZYNQ
	bool "Xilinx Zynq ARM Cortex A9 Platform"
940 941 942 943
	select CPU_V7
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	select CLKDEV_LOOKUP
944 945 946
	select ARM_GIC
	select ARM_AMBA
	select ICST
947 948
	select USE_OF
	help
949
	  Support for Xilinx Zynq ARM Cortex A9 Platform
L
Linus Torvalds 已提交
950 951
endchoice

952 953 954 955 956
#
# 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.
#
957 958 959 960
source "arch/arm/mach-at91/Kconfig"

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

L
Linus Torvalds 已提交
961 962
source "arch/arm/mach-clps711x/Kconfig"

963 964
source "arch/arm/mach-cns3xxx/Kconfig"

965 966 967 968
source "arch/arm/mach-davinci/Kconfig"

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

969 970
source "arch/arm/mach-ep93xx/Kconfig"

L
Linus Torvalds 已提交
971 972
source "arch/arm/mach-footbridge/Kconfig"

973 974
source "arch/arm/mach-gemini/Kconfig"

975 976
source "arch/arm/mach-h720x/Kconfig"

L
Linus Torvalds 已提交
977 978
source "arch/arm/mach-integrator/Kconfig"

979 980 981
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
L
Linus Torvalds 已提交
982

983 984
source "arch/arm/mach-iop13xx/Kconfig"

L
Linus Torvalds 已提交
985 986 987 988
source "arch/arm/mach-ixp4xx/Kconfig"

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

989 990
source "arch/arm/mach-ixp23xx/Kconfig"

991 992 993 994
source "arch/arm/mach-kirkwood/Kconfig"

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

995 996
source "arch/arm/mach-lpc32xx/Kconfig"

997 998
source "arch/arm/mach-msm/Kconfig"

999 1000
source "arch/arm/mach-mv78xx0/Kconfig"

1001
source "arch/arm/plat-mxc/Kconfig"
L
Linus Torvalds 已提交
1002

1003 1004
source "arch/arm/mach-mxs/Kconfig"

1005
source "arch/arm/mach-netx/Kconfig"
1006

1007 1008 1009
source "arch/arm/mach-nomadik/Kconfig"
source "arch/arm/plat-nomadik/Kconfig"

R
Russell King 已提交
1010
source "arch/arm/mach-nuc93x/Kconfig"
L
Linus Torvalds 已提交
1011

1012 1013 1014
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
L
Linus Torvalds 已提交
1015

1016 1017
source "arch/arm/mach-omap2/Kconfig"

1018
source "arch/arm/mach-orion5x/Kconfig"
1019

1020 1021
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/plat-pxa/Kconfig"
1022

1023 1024 1025 1026 1027
source "arch/arm/mach-mmp/Kconfig"

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

source "arch/arm/mach-sa1100/Kconfig"
1028

1029
source "arch/arm/plat-samsung/Kconfig"
1030
source "arch/arm/plat-s3c24xx/Kconfig"
1031
source "arch/arm/plat-s5p/Kconfig"
1032

1033
source "arch/arm/plat-spear/Kconfig"
1034

H
Hans J. Koch 已提交
1035 1036
source "arch/arm/plat-tcc/Kconfig"

1037
if ARCH_S3C2410
L
Linus Torvalds 已提交
1038
source "arch/arm/mach-s3c2410/Kconfig"
1039
source "arch/arm/mach-s3c2412/Kconfig"
Y
Yauhen Kharuzhy 已提交
1040
source "arch/arm/mach-s3c2416/Kconfig"
1041
source "arch/arm/mach-s3c2440/Kconfig"
1042
source "arch/arm/mach-s3c2443/Kconfig"
1043
endif
L
Linus Torvalds 已提交
1044

B
Ben Dooks 已提交
1045
if ARCH_S3C64XX
1046
source "arch/arm/mach-s3c64xx/Kconfig"
B
Ben Dooks 已提交
1047 1048
endif

1049
source "arch/arm/mach-s5p64x0/Kconfig"
1050

1051 1052
source "arch/arm/mach-s5pc100/Kconfig"

1053 1054
source "arch/arm/mach-s5pv210/Kconfig"

1055
source "arch/arm/mach-exynos4/Kconfig"
1056

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

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

1061
source "arch/arm/mach-u300/Kconfig"
L
Linus Torvalds 已提交
1062

1063
source "arch/arm/mach-ux500/Kconfig"
L
Linus Torvalds 已提交
1064 1065 1066

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

1067
source "arch/arm/mach-vexpress/Kconfig"
1068
source "arch/arm/plat-versatile/Kconfig"
1069

1070 1071
source "arch/arm/mach-vt8500/Kconfig"

1072 1073
source "arch/arm/mach-w90x900/Kconfig"

L
Linus Torvalds 已提交
1074 1075 1076 1077
# Definitions to make life easier
config ARCH_ACORN
	bool

1078 1079
config PLAT_IOP
	bool
M
Mikael Pettersson 已提交
1080
	select GENERIC_CLOCKEVENTS
1081
	select HAVE_SCHED_CLOCK
1082

L
Lennert Buytenhek 已提交
1083 1084
config PLAT_ORION
	bool
1085
	select CLKSRC_MMIO
R
Russell King 已提交
1086
	select GENERIC_IRQ_CHIP
1087
	select HAVE_SCHED_CLOCK
L
Lennert Buytenhek 已提交
1088

1089 1090 1091
config PLAT_PXA
	bool

1092 1093 1094
config PLAT_VERSATILE
	bool

1095 1096
config ARM_TIMER_SP804
	bool
1097
	select CLKSRC_MMIO
1098

L
Linus Torvalds 已提交
1099 1100
source arch/arm/mm/Kconfig

1101 1102
config IWMMXT
	bool "Enable iWMMXt support"
1103 1104
	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
1105 1106 1107 1108
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

L
Linus Torvalds 已提交
1109 1110 1111 1112 1113 1114
#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
	bool
	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
	default y

1115
config CPU_HAS_PMU
1116
	depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
1117
		   (!ARCH_OMAP3 || OMAP3_EMU)
1118 1119 1120
	default y
	bool

1121 1122 1123 1124 1125
config MULTI_IRQ_HANDLER
	bool
	help
	  Allow each machine to specify it's own IRQ handler at run time.

1126 1127 1128 1129
if !MMU
source "arch/arm/Kconfig-nommu"
endif

1130 1131
config ARM_ERRATA_411920
	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1132
	depends on CPU_V6 || CPU_V6K
1133 1134 1135 1136 1137 1138
	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.

1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
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.

1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167
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.

1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179
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.

1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191
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.

1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205
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.

1206 1207
config PL310_ERRATA_588369
	bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1208
	depends on CACHE_L2X0
1209 1210 1211 1212 1213 1214 1215 1216
	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
1217
	   invalidated as a result of these operations.
1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229

config ARM_ERRATA_720789
	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
	depends on CPU_V7 && SMP
	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.
1230

R
Russell King 已提交
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
config PL310_ERRATA_727915
	bool "Background Clean & Invalidate by Way operation can cause data corruption"
	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.

1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
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.

1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
config ARM_ERRATA_751472
	bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
	depends on CPU_V7 && SMP
	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.

1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
config ARM_ERRATA_753970
	bool "ARM errata: cache sync operation may be faulty"
	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.

1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290
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.

1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301
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.

1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313
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.

1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327
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.

L
Linus Torvalds 已提交
1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345
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.

1346
# Select ISA DMA controller support
L
Linus Torvalds 已提交
1347 1348
config ISA_DMA
	bool
1349
	select ISA_DMA_API
L
Linus Torvalds 已提交
1350

1351
# Select ISA DMA interface
A
Al Viro 已提交
1352 1353 1354
config ISA_DMA_API
	bool

L
Linus Torvalds 已提交
1355
config PCI
1356
	bool "PCI support" if MIGHT_HAVE_PCI
L
Linus Torvalds 已提交
1357 1358 1359 1360 1361 1362
	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.

1363 1364 1365 1366
config PCI_DOMAINS
	bool
	depends on PCI

1367 1368 1369 1370 1371 1372
config PCI_NANOENGINE
	bool "BSE nanoEngine PCI support"
	depends on SA1100_NANOENGINE
	help
	  Enable PCI on the BSE nanoEngine board.

1373 1374 1375
config PCI_SYSCALL
	def_bool PCI

L
Linus Torvalds 已提交
1376 1377 1378 1379 1380 1381
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

M
Mike Rapoport 已提交
1382 1383 1384 1385 1386 1387
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

L
Linus Torvalds 已提交
1388 1389 1390 1391 1392 1393 1394 1395
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

1396 1397
source "kernel/time/Kconfig"

L
Linus Torvalds 已提交
1398
config SMP
1399
	bool "Symmetric Multi-Processing"
1400
	depends on CPU_V6K || CPU_V7
1401
	depends on GENERIC_CLOCKEVENTS
1402
	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1403
		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1404
		 ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1405
		 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
1406
	select USE_GENERIC_SMP_HELPERS
1407
	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
L
Linus Torvalds 已提交
1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418
	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.

A
Adrian Bunk 已提交
1419
	  See also <file:Documentation/i386/IO-APIC.txt>,
L
Linus Torvalds 已提交
1420
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1421
	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
L
Linus Torvalds 已提交
1422 1423 1424

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

1425 1426 1427
config SMP_ON_UP
	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
	depends on EXPERIMENTAL
1428
	depends on SMP && !XIP_KERNEL
1429 1430 1431 1432 1433 1434 1435 1436 1437
	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.

1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
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.

1463 1464 1465 1466 1467
config HAVE_ARM_SCU
	bool
	help
	  This option enables support for the ARM system coherency unit

1468 1469 1470
config HAVE_ARM_TWD
	bool
	depends on SMP
R
Russell King 已提交
1471
	select TICK_ONESHOT
1472 1473 1474
	help
	  This options enables support for the ARM timer and watchdog unit

1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497
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
1498 1499 1500 1501 1502 1503
config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

1504 1505 1506 1507 1508 1509 1510
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.

1511 1512
config LOCAL_TIMERS
	bool "Use local timer interrupts"
1513
	depends on SMP
1514
	default y
1515
	select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
1516 1517 1518 1519 1520 1521
	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.

1522
source kernel/Kconfig.preempt
L
Linus Torvalds 已提交
1523

1524 1525
config HZ
	int
1526
	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
K
Kukjin Kim 已提交
1527
		ARCH_S5PV210 || ARCH_EXYNOS4
1528
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1529
	default AT91_TIMER_HZ if ARCH_AT91
1530
	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1531 1532
	default 100

1533
config THUMB2_KERNEL
1534
	bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
1535
	depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
1536 1537 1538 1539 1540 1541 1542 1543 1544
	select AEABI
	select ARM_ASM_UNIFIED
	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.

1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575
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.

1576 1577 1578
config ARM_ASM_UNIFIED
	bool

1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593
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.

1594
config OABI_COMPAT
1595
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1596
	depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610
	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.

1611
config ARCH_HAS_HOLES_MEMORYMODEL
1612 1613
	bool

1614 1615 1616
config ARCH_SPARSEMEM_ENABLE
	bool

1617 1618 1619
config ARCH_SPARSEMEM_DEFAULT
	def_bool ARCH_SPARSEMEM_ENABLE

1620
config ARCH_SELECT_MEMORY_MODEL
R
Russell King 已提交
1621
	def_bool ARCH_SPARSEMEM_ENABLE
Y
Yasunori Goto 已提交
1622

1623 1624 1625
config HAVE_ARCH_PFN_VALID
	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM

N
Nicolas Pitre 已提交
1626
config HIGHMEM
1627 1628
	bool "High Memory Support"
	depends on MMU
N
Nicolas Pitre 已提交
1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642
	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
1643 1644 1645 1646
config HIGHPTE
	bool "Allocate 2nd-level pagetables from highmem"
	depends on HIGHMEM

1647 1648
config HW_PERF_EVENTS
	bool "Enable hardware performance counter support for perf events"
1649
	depends on PERF_EVENTS && CPU_HAS_PMU
1650 1651 1652 1653 1654
	default y
	help
	  Enable hardware performance counter support for perf events. If
	  disabled, perf events will use software events only.

1655 1656
source "mm/Kconfig"

1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672
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
1673 1674
config LEDS
	bool "Timer and CPU usage LEDs"
1675
	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1676
		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
L
Linus Torvalds 已提交
1677 1678
		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1679
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1680
		   ARCH_AT91 || ARCH_DAVINCI || \
1681
		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
L
Linus Torvalds 已提交
1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694
	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
1695 1696
			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			    || MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1697
	depends on LEDS
1698
	depends on !GENERIC_CLOCKEVENTS
L
Linus Torvalds 已提交
1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712
	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
1713 1714 1715
			!ARCH_OMAP) \
			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			|| MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727
	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
1728
	depends on CPU_CP15_MMU
L
Linus Torvalds 已提交
1729
	default y if !ARCH_EBSA110
1730
	select HAVE_PROC_CPU if PROC_FS
L
Linus Torvalds 已提交
1731
	help
1732
	  ARM processors cannot fetch/store information which is not
L
Linus Torvalds 已提交
1733 1734 1735 1736 1737 1738 1739
	  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.

1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755
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
1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769
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.

1770 1771
config CC_STACKPROTECTOR
	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1772
	depends on EXPERIMENTAL
1773 1774 1775 1776 1777 1778 1779 1780 1781 1782
	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.

1783 1784 1785 1786 1787 1788
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
1789 1790 1791 1792
endmenu

menu "Boot options"

G
Grant Likely 已提交
1793 1794 1795 1796
config USE_OF
	bool "Flattened Device Tree support"
	select OF
	select OF_EARLY_FLATTREE
1797
	select IRQ_DOMAIN
G
Grant Likely 已提交
1798 1799 1800
	help
	  Include support for flattened device tree machine descriptions.

L
Linus Torvalds 已提交
1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817
# 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
1818 1819 1820 1821 1822 1823
	  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
1824 1825 1826 1827 1828 1829 1830 1831 1832 1833

	  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.

1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850
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

1851 1852 1853
config ZBOOT_ROM_MMCIF
	bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
	help
1854 1855 1856 1857 1858 1859 1860 1861
	  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
1862

1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882
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.

1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894
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
1895 1896 1897 1898 1899 1900 1901 1902 1903 1904
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).

1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921
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.

1922 1923 1924 1925 1926 1927 1928
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.
1929
endchoice
1930

L
Linus Torvalds 已提交
1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960
config XIP_KERNEL
	bool "Kernel Execute-In-Place from ROM"
	depends on !ZBOOT_ROM
	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
1961 1962 1963 1964 1965 1966
config KEXEC
	bool "Kexec system call (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	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
1967
	  but it is independent of the system firmware.   And like a reboot
R
Richard Purdie 已提交
1968 1969 1970 1971 1972 1973 1974
	  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.

1975 1976
config ATAGS_PROC
	bool "Export atags in procfs"
1977 1978
	depends on KEXEC
	default y
1979 1980 1981 1982
	help
	  Should the atags used to boot the kernel be exported in an "atags"
	  file in procfs. Useful with kexec.

1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
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

1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
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
2006 2007
endmenu

2008
menu "CPU Power Management"
L
Linus Torvalds 已提交
2009

2010
if ARCH_HAS_CPUFREQ
L
Linus Torvalds 已提交
2011 2012 2013

source "drivers/cpufreq/Kconfig"

Y
Yong Shen 已提交
2014 2015 2016 2017 2018 2019
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
2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
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
2037 2038 2039 2040 2041 2042
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

B
Ben Dooks 已提交
2043 2044 2045 2046 2047 2048
config CPU_FREQ_S3C
	bool
	help
	  Internal configuration node for common cpufreq on Samsung SoC

config CPU_FREQ_S3C24XX
2049
	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
B
Ben Dooks 已提交
2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060
	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
2061
	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
B
Ben Dooks 已提交
2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
	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

2083 2084 2085 2086 2087 2088
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
2089 2090
endif

2091 2092 2093 2094
source "drivers/cpuidle/Kconfig"

endmenu

L
Linus Torvalds 已提交
2095 2096 2097 2098 2099 2100
menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
2101
	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
L
Linus Torvalds 已提交
2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112
	---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"
2113
	depends on FPE_NWFPE
L
Linus Torvalds 已提交
2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124
	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)"
2125
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
L
Linus Torvalds 已提交
2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138
	---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"
2139
	depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
L
Linus Torvalds 已提交
2140 2141 2142 2143 2144 2145 2146 2147 2148
	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.

2149 2150 2151 2152 2153
config VFPv3
	bool
	depends on VFP
	default y if CPU_V7

2154 2155 2156 2157 2158 2159 2160
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
2161 2162 2163 2164 2165 2166 2167 2168
endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
2169
	depends on !AEABI
L
Linus Torvalds 已提交
2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180
	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
2181
source "kernel/power/Kconfig"
L
Linus Torvalds 已提交
2182

J
Johannes Berg 已提交
2183
config ARCH_SUSPEND_POSSIBLE
R
Russell King 已提交
2184
	depends on !ARCH_S5P64X0 && !ARCH_S5PC100
2185 2186
	depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
		CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
J
Johannes Berg 已提交
2187 2188
	def_bool y

L
Linus Torvalds 已提交
2189 2190
endmenu

2191 2192
source "net/Kconfig"

2193
source "drivers/Kconfig"
L
Linus Torvalds 已提交
2194 2195 2196 2197 2198 2199 2200 2201 2202 2203

source "fs/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"