Kconfig 57.5 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 && !THUMB2_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
L
Linus Torvalds 已提交
32 33
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
34
	  licensed by ARM Ltd and targeted at embedded applications and
L
Linus Torvalds 已提交
35
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
36
	  manufactured, but legacy ARM-based PC hardware remains popular in
L
Linus Torvalds 已提交
37 38 39
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

R
Russell King 已提交
40 41 42
config HAVE_PWM
	bool

43 44 45
config MIGHT_HAVE_PCI
	bool

46 47 48
config SYS_SUPPORTS_APM_EMULATION
	bool

49 50 51
config HAVE_SCHED_CLOCK
	bool

D
David Brownell 已提交
52 53 54
config GENERIC_GPIO
	bool

55 56 57
config ARCH_USES_GETTIMEOFFSET
	bool
	default n
58

59 60 61
config GENERIC_CLOCKEVENTS
	bool

62 63 64
config GENERIC_CLOCKEVENTS_BROADCAST
	bool
	depends on GENERIC_CLOCKEVENTS
65
	default y if SMP
66

67 68 69 70
config KTIME_SCALAR
	bool
	default y

71 72 73 74
config HAVE_TCM
	bool
	select GENERIC_ALLOCATOR

75 76 77
config HAVE_PROC_CPU
	bool

A
Al Viro 已提交
78 79 80
config NO_IOPORT
	bool

L
Linus Torvalds 已提交
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
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.

107 108 109 110
config STACKTRACE_SUPPORT
	bool
	default y

N
Nicolas Pitre 已提交
111 112 113 114 115
config HAVE_LATENCYTOP_SUPPORT
	bool
	depends on !SMP
	default y

116 117 118 119
config LOCKDEP_SUPPORT
	bool
	default y

R
Russell King 已提交
120 121 122 123
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

124 125 126 127 128 129 130 131
config HARDIRQS_SW_RESEND
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

N
Nick Piggin 已提交
132 133 134 135 136
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

L
Linus Torvalds 已提交
137 138 139 140 141 142 143
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

144 145 146 147 148 149
config ARCH_HAS_ILOG2_U32
	bool

config ARCH_HAS_ILOG2_U64
	bool

150 151 152 153 154 155 156
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.

157 158 159
config ARCH_HAS_CPU_IDLE_WAIT
       def_bool y

160 161 162 163
config GENERIC_HWEIGHT
	bool
	default y

L
Linus Torvalds 已提交
164 165 166 167
config GENERIC_CALIBRATE_DELAY
	bool
	default y

168 169 170
config ARCH_MAY_HAVE_PC_FDC
	bool

171 172 173
config ZONE_DMA
	bool

174 175 176
config NEED_DMA_MAP_STATE
       def_bool y

L
Linus Torvalds 已提交
177 178 179 180 181 182
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

183 184 185
config ARCH_MTD_XIP
	bool

186 187
config VECTORS_BASE
	hex
188
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
189 190 191 192 193
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

194 195 196
config ARM_PATCH_PHYS_VIRT
	bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
	depends on EXPERIMENTAL
N
Nicolas Pitre 已提交
197
	depends on !XIP_KERNEL && MMU
198 199 200 201 202
	depends on !ARCH_REALVIEW || !SPARSEMEM
	help
	  Patch phys-to-virt translation functions at runtime according to
	  the position of the kernel in system memory.

N
Nicolas Pitre 已提交
203
	  This can only be used with non-XIP with MMU kernels where
204 205
	  the base of physical memory is at a 16MB boundary.

206 207 208 209
config ARM_PATCH_PHYS_VIRT_16BIT
	def_bool y
	depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM

L
Linus Torvalds 已提交
210 211
source "init/Kconfig"

212 213
source "kernel/Kconfig.freezer"

L
Linus Torvalds 已提交
214 215
menu "System Type"

216 217 218 219 220 221 222
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'.

223 224 225 226
#
# 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
227 228
choice
	prompt "ARM system type"
229
	default ARCH_VERSATILE
L
Linus Torvalds 已提交
230

231 232 233
config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
234
	select ARCH_HAS_CPUFREQ
235
	select CLKDEV_LOOKUP
236
	select ICST
237
	select GENERIC_CLOCKEVENTS
238
	select PLAT_VERSATILE
239
	select PLAT_VERSATILE_FPGA_IRQ
240 241 242 243 244 245
	help
	  Support for ARM's Integrator platform.

config ARCH_REALVIEW
	bool "ARM Ltd. RealView family"
	select ARM_AMBA
246
	select CLKDEV_LOOKUP
247
	select ICST
248
	select GENERIC_CLOCKEVENTS
249
	select ARCH_WANT_OPTIONAL_GPIOLIB
250
	select PLAT_VERSATILE
251
	select PLAT_VERSATILE_CLCD
252
	select ARM_TIMER_SP804
253
	select GPIO_PL061 if GPIOLIB
254 255 256 257 258 259 260
	help
	  This enables support for ARM Ltd RealView boards.

config ARCH_VERSATILE
	bool "ARM Ltd. Versatile family"
	select ARM_AMBA
	select ARM_VIC
261
	select CLKDEV_LOOKUP
262
	select ICST
263
	select GENERIC_CLOCKEVENTS
264
	select ARCH_WANT_OPTIONAL_GPIOLIB
265
	select PLAT_VERSATILE
266
	select PLAT_VERSATILE_CLCD
267
	select PLAT_VERSATILE_FPGA_IRQ
268
	select ARM_TIMER_SP804
269 270 271
	help
	  This enables support for ARM Ltd Versatile board.

272 273 274 275 276
config ARCH_VEXPRESS
	bool "ARM Ltd. Versatile Express family"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_TIMER_SP804
277
	select CLKDEV_LOOKUP
278 279
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
280
	select HAVE_PATA_PLATFORM
281 282
	select ICST
	select PLAT_VERSATILE
283
	select PLAT_VERSATILE_CLCD
284 285 286
	help
	  This enables support for the ARM Ltd Versatile Express boards.

287 288
config ARCH_AT91
	bool "Atmel AT91"
289
	select ARCH_REQUIRE_GPIOLIB
D
David Brownell 已提交
290
	select HAVE_CLK
291
	help
292 293
	  This enables support for systems based on the Atmel AT91RM9200,
	  AT91SAM9 and AT91CAP9 processors.
294

295 296 297 298 299
config ARCH_BCMRING
	bool "Broadcom BCMRING"
	depends on MMU
	select CPU_V6
	select ARM_AMBA
300
	select CLKDEV_LOOKUP
301 302 303 304 305
	select GENERIC_CLOCKEVENTS
	select ARCH_WANT_OPTIONAL_GPIOLIB
	help
	  Support for Broadcom's BCMRing platform.

L
Linus Torvalds 已提交
306
config ARCH_CLPS711X
307
	bool "Cirrus Logic CLPS711x/EP721x-based"
308
	select CPU_ARM720T
309
	select ARCH_USES_GETTIMEOFFSET
310 311
	help
	  Support for Cirrus Logic 711x/721x based boards.
L
Linus Torvalds 已提交
312

313 314 315 316 317
config ARCH_CNS3XXX
	bool "Cavium Networks CNS3XXX family"
	select CPU_V6
	select GENERIC_CLOCKEVENTS
	select ARM_GIC
318
	select MIGHT_HAVE_PCI
319
	select PCI_DOMAINS if PCI
320 321 322
	help
	  Support for Cavium Networks CNS3XXX platform.

323 324 325 326
config ARCH_GEMINI
	bool "Cortina Systems Gemini"
	select CPU_FA526
	select ARCH_REQUIRE_GPIOLIB
327
	select ARCH_USES_GETTIMEOFFSET
328 329 330
	help
	  Support for the Cortina Systems Gemini family SoCs

L
Linus Torvalds 已提交
331 332
config ARCH_EBSA110
	bool "EBSA-110"
333
	select CPU_SA110
334
	select ISA
335
	select NO_IOPORT
336
	select ARCH_USES_GETTIMEOFFSET
L
Linus Torvalds 已提交
337 338
	help
	  This is an evaluation board for the StrongARM processor available
339
	  from Digital. It has limited hardware on-board, including an
L
Linus Torvalds 已提交
340 341 342
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

343 344
config ARCH_EP93XX
	bool "EP93xx-based"
345
	select CPU_ARM920T
346 347
	select ARM_AMBA
	select ARM_VIC
348
	select CLKDEV_LOOKUP
M
Michael Buesch 已提交
349
	select ARCH_REQUIRE_GPIOLIB
350
	select ARCH_HAS_HOLES_MEMORYMODEL
351
	select ARCH_USES_GETTIMEOFFSET
352 353 354
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

L
Linus Torvalds 已提交
355 356
config ARCH_FOOTBRIDGE
	bool "FootBridge"
357
	select CPU_SA110
L
Linus Torvalds 已提交
358
	select FOOTBRIDGE
359
	select GENERIC_CLOCKEVENTS
360 361 362
	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
363

364 365 366 367
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
368
	select CLKDEV_LOOKUP
369
	select CLKSRC_MMIO
370
	select HAVE_SCHED_CLOCK
371 372 373
	help
	  Support for Freescale MXC/iMX-based family of processors

374 375 376 377
config ARCH_MXS
	bool "Freescale MXS-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
378
	select CLKDEV_LOOKUP
379 380 381
	help
	  Support for Freescale MXS-based family of processors

382 383 384
config ARCH_STMP3XXX
	bool "Freescale STMP3xxx"
	select CPU_ARM926T
385
	select CLKDEV_LOOKUP
386 387 388 389 390 391
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
	select USB_ARCH_HAS_EHCI
	help
	  Support for systems based on the Freescale 3xxx CPUs.

392 393
config ARCH_NETX
	bool "Hilscher NetX based"
394
	select CLKSRC_MMIO
395
	select CPU_ARM926T
396
	select ARM_VIC
397
	select GENERIC_CLOCKEVENTS
398
	help
399 400 401 402
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
403
	select CPU_ARM720T
404
	select ISA_DMA_API
405
	select ARCH_USES_GETTIMEOFFSET
406 407 408
	help
	  This enables support for systems based on the Hynix HMS720x

409 410 411
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
412
	select CPU_XSC3
413 414 415
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
416
	select VMSPLIT_1G
417 418 419
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

420 421
config ARCH_IOP32X
	bool "IOP32x-based"
422
	depends on MMU
423
	select CPU_XSCALE
424
	select PLAT_IOP
425
	select PCI
426
	select ARCH_REQUIRE_GPIOLIB
427
	help
428 429 430 431 432 433
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
434
	select CPU_XSCALE
435
	select PLAT_IOP
436
	select PCI
437
	select ARCH_REQUIRE_GPIOLIB
438 439
	help
	  Support for Intel's IOP33X (XScale) family of processors.
L
Linus Torvalds 已提交
440

441 442
config ARCH_IXP23XX
 	bool "IXP23XX-based"
443
	depends on MMU
444
	select CPU_XSC3
445
 	select PCI
446
	select ARCH_USES_GETTIMEOFFSET
447
	help
448
	  Support for Intel's IXP23xx (XScale) family of processors.
L
Linus Torvalds 已提交
449 450 451

config ARCH_IXP2000
	bool "IXP2400/2800-based"
452
	depends on MMU
453
	select CPU_XSCALE
454
	select PCI
455
	select ARCH_USES_GETTIMEOFFSET
456 457
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
L
Linus Torvalds 已提交
458

459 460
config ARCH_IXP4XX
	bool "IXP4xx-based"
461
	depends on MMU
462
	select CLKSRC_MMIO
463
	select CPU_XSCALE
464
	select GENERIC_GPIO
465
	select GENERIC_CLOCKEVENTS
466
	select HAVE_SCHED_CLOCK
467
	select MIGHT_HAVE_PCI
R
Russell King 已提交
468
	select DMABOUNCE if PCI
469
	help
470
	  Support for Intel's IXP4XX (XScale) family of processors.
471

472 473
config ARCH_DOVE
	bool "Marvell Dove"
474
	select CPU_V6K
475 476 477 478 479 480 481
	select PCI
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the Marvell Dove SoC 88AP510

482 483
config ARCH_KIRKWOOD
	bool "Marvell Kirkwood"
484
	select CPU_FEROCEON
485
	select PCI
486
	select ARCH_REQUIRE_GPIOLIB
487 488 489 490 491 492
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell Kirkwood series SoCs:
	  88F6180, 88F6192 and 88F6281.

493 494
config ARCH_LOKI
	bool "Marvell Loki (88RC8480)"
495
	select CPU_FEROCEON
496 497 498 499 500
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the Marvell Loki (88RC8480) SoC.

501 502
config ARCH_LPC32XX
	bool "NXP LPC32XX"
503
	select CLKSRC_MMIO
504 505 506 507 508
	select CPU_ARM926T
	select ARCH_REQUIRE_GPIOLIB
	select HAVE_IDE
	select ARM_AMBA
	select USB_ARCH_HAS_OHCI
509
	select CLKDEV_LOOKUP
510 511 512 513 514
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	help
	  Support for the NXP LPC32XX family of processors

515 516
config ARCH_MV78XX0
	bool "Marvell MV78xx0"
517
	select CPU_FEROCEON
518
	select PCI
519
	select ARCH_REQUIRE_GPIOLIB
520 521 522 523 524 525
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell MV78xx0 series SoCs:
	  MV781x0, MV782x0.

526
config ARCH_ORION5X
527 528
	bool "Marvell Orion"
	depends on MMU
529
	select CPU_FEROCEON
T
Tzachi Perelstein 已提交
530
	select PCI
531
	select ARCH_REQUIRE_GPIOLIB
532
	select GENERIC_CLOCKEVENTS
L
Lennert Buytenhek 已提交
533
	select PLAT_ORION
534
	help
535
	  Support for the following Marvell Orion 5x series SoCs:
536
	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
537
	  Orion-2 (5281), Orion-1-90 (6183).
538

539
config ARCH_MMP
540
	bool "Marvell PXA168/910/MMP2"
541 542
	depends on MMU
	select ARCH_REQUIRE_GPIOLIB
543
	select CLKDEV_LOOKUP
544
	select GENERIC_CLOCKEVENTS
545
	select HAVE_SCHED_CLOCK
546 547
	select TICK_ONESHOT
	select PLAT_PXA
H
Haojian Zhuang 已提交
548
	select SPARSE_IRQ
549
	help
550
	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
551 552 553 554

config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
	select CPU_ARM922T
555
	select ARCH_REQUIRE_GPIOLIB
556
	select ARCH_USES_GETTIMEOFFSET
557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

config ARCH_NS9XXX
	bool "NetSilicon NS9xxx"
	select CPU_ARM926T
	select GENERIC_GPIO
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	help
	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
	  System.

	  <http://www.digi.com/products/microprocessors/index.jsp>

config ARCH_W90X900
	bool "Nuvoton W90X900 CPU"
	select CPU_ARM926T
576
	select ARCH_REQUIRE_GPIOLIB
577
	select CLKDEV_LOOKUP
578
	select CLKSRC_MMIO
579
	select GENERIC_CLOCKEVENTS
580
	help
581 582 583 584 585 586 587
	  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>
588

589 590 591
config ARCH_NUC93X
	bool "Nuvoton NUC93X CPU"
	select CPU_ARM926T
592
	select CLKDEV_LOOKUP
593 594 595 596
	help
	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
	  low-power and high performance MPEG-4/JPEG multimedia controller chip.

597 598
config ARCH_TEGRA
	bool "NVIDIA Tegra"
R
Russell King 已提交
599
	select CLKDEV_LOOKUP
600
	select CLKSRC_MMIO
601 602 603 604
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	select GENERIC_GPIO
	select HAVE_CLK
605
	select HAVE_SCHED_CLOCK
606
	select ARCH_HAS_BARRIERS if CACHE_L2X0
C
Colin Cross 已提交
607
	select ARCH_HAS_CPUFREQ
608 609 610 611
	help
	  This enables support for NVIDIA Tegra based systems (Tegra APX,
	  Tegra 6xx and Tegra 2 series).

612 613
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
614
	select CPU_ARM926T
615
	select CLKDEV_LOOKUP
616
	select ARCH_USES_GETTIMEOFFSET
617 618 619
	help
	  This enables support for Philips PNX4008 mobile platform.

L
Linus Torvalds 已提交
620
config ARCH_PXA
E
eric miao 已提交
621
	bool "PXA2xx/PXA3xx-based"
622
	depends on MMU
623
	select ARCH_MTD_XIP
624
	select ARCH_HAS_CPUFREQ
625
	select CLKDEV_LOOKUP
626
	select CLKSRC_MMIO
M
Michael Buesch 已提交
627
	select ARCH_REQUIRE_GPIOLIB
628
	select GENERIC_CLOCKEVENTS
629
	select HAVE_SCHED_CLOCK
630
	select TICK_ONESHOT
631
	select PLAT_PXA
632
	select SPARSE_IRQ
633
	help
E
eric miao 已提交
634
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
L
Linus Torvalds 已提交
635

636 637
config ARCH_MSM
	bool "Qualcomm MSM"
638
	select HAVE_CLK
639
	select GENERIC_CLOCKEVENTS
P
Pavel Machek 已提交
640
	select ARCH_REQUIRE_GPIOLIB
S
Stephen Boyd 已提交
641
	select CLKDEV_LOOKUP
642
	help
643 644 645 646 647
	  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).
648

649
config ARCH_SHMOBILE
650 651
	bool "Renesas SH-Mobile / R-Mobile"
	select HAVE_CLK
P
Paul Mundt 已提交
652
	select CLKDEV_LOOKUP
653 654 655
	select GENERIC_CLOCKEVENTS
	select NO_IOPORT
	select SPARSE_IRQ
656
	select MULTI_IRQ_HANDLER
657
	help
658
	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
659

L
Linus Torvalds 已提交
660 661 662 663 664
config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
665
	select ARCH_MAY_HAVE_PC_FDC
666
	select HAVE_PATA_PLATFORM
667
	select ISA_DMA_API
A
Al Viro 已提交
668
	select NO_IOPORT
669
	select ARCH_SPARSEMEM_ENABLE
670
	select ARCH_USES_GETTIMEOFFSET
L
Linus Torvalds 已提交
671 672 673 674 675 676
	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"
677
	select CLKSRC_MMIO
678
	select CPU_SA1100
679
	select ISA
680
	select ARCH_SPARSEMEM_ENABLE
681
	select ARCH_MTD_XIP
682
	select ARCH_HAS_CPUFREQ
R
Russell King 已提交
683
	select CPU_FREQ
684
	select GENERIC_CLOCKEVENTS
685
	select HAVE_CLK
686
	select HAVE_SCHED_CLOCK
687
	select TICK_ONESHOT
M
Michael Buesch 已提交
688
	select ARCH_REQUIRE_GPIOLIB
689 690
	help
	  Support for StrongARM 11x0 based boards.
L
Linus Torvalds 已提交
691 692

config ARCH_S3C2410
693
	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
D
David Brownell 已提交
694
	select GENERIC_GPIO
B
Ben Dooks 已提交
695
	select ARCH_HAS_CPUFREQ
696
	select HAVE_CLK
697
	select ARCH_USES_GETTIMEOFFSET
698
	select HAVE_S3C2410_I2C if I2C
L
Linus Torvalds 已提交
699 700 701
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
702
	  the Samsung SMDK2410 development board (and derivatives).
L
Linus Torvalds 已提交
703

704
	  Note, the S3C2416 and the S3C2450 are so close that they even share
L
Lucas De Marchi 已提交
705
	  the same SoC ID code. This means that there is no separate machine
706 707
	  directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.

B
Ben Dooks 已提交
708 709
config ARCH_S3C64XX
	bool "Samsung S3C64XX"
710
	select PLAT_SAMSUNG
711 712
	select CPU_V6
	select ARM_VIC
B
Ben Dooks 已提交
713
	select HAVE_CLK
714
	select NO_IOPORT
715
	select ARCH_USES_GETTIMEOFFSET
716
	select ARCH_HAS_CPUFREQ
717 718 719 720 721 722 723 724 725 726 727
	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
728
	select HAVE_S3C2410_I2C if I2C
729
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
B
Ben Dooks 已提交
730 731 732
	help
	  Samsung S3C64XX series based systems

733 734
config ARCH_S5P64X0
	bool "Samsung S5P6440 S5P6450"
735 736 737
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
738
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
739 740
	select GENERIC_CLOCKEVENTS
	select HAVE_SCHED_CLOCK
741
	select HAVE_S3C2410_I2C if I2C
742
	select HAVE_S3C_RTC if RTC_CLASS
743
	help
744 745
	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
	  SMDK6450.
746

747 748 749 750 751
config ARCH_S5P6442
	bool "Samsung S5P6442"
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
752
	select ARCH_USES_GETTIMEOFFSET
753
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
754 755 756
	help
	  Samsung S5P6442 CPU based systems

757 758
config ARCH_S5PC100
	bool "Samsung S5PC100"
759 760 761
	select GENERIC_GPIO
	select HAVE_CLK
	select CPU_V7
762
	select ARM_L1_CACHE_SHIFT_6
763
	select ARCH_USES_GETTIMEOFFSET
764
	select HAVE_S3C2410_I2C if I2C
765
	select HAVE_S3C_RTC if RTC_CLASS
766
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
767
	help
768
	  Samsung S5PC100 series based systems
769

770 771 772
config ARCH_S5PV210
	bool "Samsung S5PV210/S5PC110"
	select CPU_V7
773
	select ARCH_SPARSEMEM_ENABLE
774 775 776
	select GENERIC_GPIO
	select HAVE_CLK
	select ARM_L1_CACHE_SHIFT_6
777
	select ARCH_HAS_CPUFREQ
778 779
	select GENERIC_CLOCKEVENTS
	select HAVE_SCHED_CLOCK
780
	select HAVE_S3C2410_I2C if I2C
781
	select HAVE_S3C_RTC if RTC_CLASS
782
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
783 784 785
	help
	  Samsung S5PV210/S5PC110 series based systems

786 787
config ARCH_EXYNOS4
	bool "Samsung EXYNOS4"
788
	select CPU_V7
789
	select ARCH_SPARSEMEM_ENABLE
790 791
	select GENERIC_GPIO
	select HAVE_CLK
792
	select ARCH_HAS_CPUFREQ
793
	select GENERIC_CLOCKEVENTS
794
	select HAVE_S3C_RTC if RTC_CLASS
795
	select HAVE_S3C2410_I2C if I2C
796
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
797
	help
798
	  Samsung EXYNOS4 series based systems
799

L
Linus Torvalds 已提交
800 801
config ARCH_SHARK
	bool "Shark"
802
	select CPU_SA110
803 804
	select ISA
	select ISA_DMA
805
	select ZONE_DMA
806
	select PCI
807
	select ARCH_USES_GETTIMEOFFSET
808 809 810
	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
811

H
Hans J. Koch 已提交
812 813
config ARCH_TCC_926
	bool "Telechips TCC ARM926-based systems"
814
	select CLKSRC_MMIO
H
Hans J. Koch 已提交
815 816
	select CPU_ARM926T
	select HAVE_CLK
817
	select CLKDEV_LOOKUP
H
Hans J. Koch 已提交
818 819 820 821
	select GENERIC_CLOCKEVENTS
	help
	  Support for Telechips TCC ARM926-based systems.

822 823 824
config ARCH_U300
	bool "ST-Ericsson U300 Series"
	depends on MMU
825
	select CLKSRC_MMIO
826
	select CPU_ARM926T
827
	select HAVE_SCHED_CLOCK
828
	select HAVE_TCM
829 830 831
	select ARM_AMBA
	select ARM_VIC
	select GENERIC_CLOCKEVENTS
832
	select CLKDEV_LOOKUP
833 834 835 836
	select GENERIC_GPIO
	help
	  Support for ST-Ericsson U300 series mobile platforms.

837 838 839 840 841
config ARCH_U8500
	bool "ST-Ericsson U8500 Series"
	select CPU_V7
	select ARM_AMBA
	select GENERIC_CLOCKEVENTS
842
	select CLKDEV_LOOKUP
843
	select ARCH_REQUIRE_GPIOLIB
844
	select ARCH_HAS_CPUFREQ
845 846 847 848 849 850 851 852
	help
	  Support for ST-Ericsson's Ux500 architecture

config ARCH_NOMADIK
	bool "STMicroelectronics Nomadik"
	select ARM_AMBA
	select ARM_VIC
	select CPU_ARM926T
853
	select CLKDEV_LOOKUP
854 855 856 857 858
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
	help
	  Support for the Nomadik platform by ST-Ericsson

859 860 861
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_CLOCKEVENTS
862
	select ARCH_REQUIRE_GPIOLIB
863
	select ZONE_DMA
864
	select HAVE_IDE
865
	select CLKDEV_LOOKUP
D
David Brownell 已提交
866
	select GENERIC_ALLOCATOR
867
	select ARCH_HAS_HOLES_MEMORYMODEL
868 869 870
	help
	  Support for TI's DaVinci platform.

871 872
config ARCH_OMAP
	bool "TI OMAP"
873
	select HAVE_CLK
M
Michael Buesch 已提交
874
	select ARCH_REQUIRE_GPIOLIB
875
	select ARCH_HAS_CPUFREQ
876
	select GENERIC_CLOCKEVENTS
877
	select HAVE_SCHED_CLOCK
878
	select ARCH_HAS_HOLES_MEMORYMODEL
879
	help
880
	  Support for TI's OMAP platform (OMAP1/2/3/4).
881

882 883 884 885
config PLAT_SPEAR
	bool "ST SPEAr"
	select ARM_AMBA
	select ARCH_REQUIRE_GPIOLIB
886
	select CLKDEV_LOOKUP
887
	select CLKSRC_MMIO
888 889 890 891 892
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	help
	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).

893 894 895 896 897 898 899 900 901 902
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.
L
Linus Torvalds 已提交
903 904
endchoice

905 906 907 908 909
#
# 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.
#
910 911 912 913
source "arch/arm/mach-at91/Kconfig"

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

L
Linus Torvalds 已提交
914 915
source "arch/arm/mach-clps711x/Kconfig"

916 917
source "arch/arm/mach-cns3xxx/Kconfig"

918 919 920 921
source "arch/arm/mach-davinci/Kconfig"

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

922 923
source "arch/arm/mach-ep93xx/Kconfig"

L
Linus Torvalds 已提交
924 925
source "arch/arm/mach-footbridge/Kconfig"

926 927
source "arch/arm/mach-gemini/Kconfig"

928 929
source "arch/arm/mach-h720x/Kconfig"

L
Linus Torvalds 已提交
930 931
source "arch/arm/mach-integrator/Kconfig"

932 933 934
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
L
Linus Torvalds 已提交
935

936 937
source "arch/arm/mach-iop13xx/Kconfig"

L
Linus Torvalds 已提交
938 939 940 941
source "arch/arm/mach-ixp4xx/Kconfig"

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

942 943
source "arch/arm/mach-ixp23xx/Kconfig"

944 945 946 947
source "arch/arm/mach-kirkwood/Kconfig"

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

948 949
source "arch/arm/mach-loki/Kconfig"

950 951
source "arch/arm/mach-lpc32xx/Kconfig"

952 953
source "arch/arm/mach-msm/Kconfig"

954 955
source "arch/arm/mach-mv78xx0/Kconfig"

956
source "arch/arm/plat-mxc/Kconfig"
L
Linus Torvalds 已提交
957

958 959
source "arch/arm/mach-mxs/Kconfig"

960
source "arch/arm/mach-netx/Kconfig"
961

962 963 964 965
source "arch/arm/mach-nomadik/Kconfig"
source "arch/arm/plat-nomadik/Kconfig"

source "arch/arm/mach-ns9xxx/Kconfig"
L
Linus Torvalds 已提交
966

R
Russell King 已提交
967
source "arch/arm/mach-nuc93x/Kconfig"
L
Linus Torvalds 已提交
968

969 970 971
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
L
Linus Torvalds 已提交
972

973 974
source "arch/arm/mach-omap2/Kconfig"

975
source "arch/arm/mach-orion5x/Kconfig"
976

977 978
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/plat-pxa/Kconfig"
979

980 981 982 983 984
source "arch/arm/mach-mmp/Kconfig"

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

source "arch/arm/mach-sa1100/Kconfig"
985

986
source "arch/arm/plat-samsung/Kconfig"
987
source "arch/arm/plat-s3c24xx/Kconfig"
988
source "arch/arm/plat-s5p/Kconfig"
989

990
source "arch/arm/plat-spear/Kconfig"
991

H
Hans J. Koch 已提交
992 993
source "arch/arm/plat-tcc/Kconfig"

994 995
if ARCH_S3C2410
source "arch/arm/mach-s3c2400/Kconfig"
L
Linus Torvalds 已提交
996
source "arch/arm/mach-s3c2410/Kconfig"
997
source "arch/arm/mach-s3c2412/Kconfig"
Y
Yauhen Kharuzhy 已提交
998
source "arch/arm/mach-s3c2416/Kconfig"
999
source "arch/arm/mach-s3c2440/Kconfig"
1000
source "arch/arm/mach-s3c2443/Kconfig"
1001
endif
L
Linus Torvalds 已提交
1002

B
Ben Dooks 已提交
1003
if ARCH_S3C64XX
1004
source "arch/arm/mach-s3c64xx/Kconfig"
B
Ben Dooks 已提交
1005 1006
endif

1007
source "arch/arm/mach-s5p64x0/Kconfig"
1008

1009
source "arch/arm/mach-s5p6442/Kconfig"
1010

1011 1012
source "arch/arm/mach-s5pc100/Kconfig"

1013 1014
source "arch/arm/mach-s5pv210/Kconfig"

1015
source "arch/arm/mach-exynos4/Kconfig"
1016

1017
source "arch/arm/mach-shmobile/Kconfig"
1018

1019
source "arch/arm/plat-stmp3xxx/Kconfig"
1020

1021 1022
source "arch/arm/mach-tegra/Kconfig"

1023
source "arch/arm/mach-u300/Kconfig"
L
Linus Torvalds 已提交
1024

1025
source "arch/arm/mach-ux500/Kconfig"
L
Linus Torvalds 已提交
1026 1027 1028

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

1029
source "arch/arm/mach-vexpress/Kconfig"
1030
source "arch/arm/plat-versatile/Kconfig"
1031

1032 1033
source "arch/arm/mach-vt8500/Kconfig"

1034 1035
source "arch/arm/mach-w90x900/Kconfig"

L
Linus Torvalds 已提交
1036 1037 1038 1039
# Definitions to make life easier
config ARCH_ACORN
	bool

1040 1041
config PLAT_IOP
	bool
M
Mikael Pettersson 已提交
1042
	select GENERIC_CLOCKEVENTS
1043
	select HAVE_SCHED_CLOCK
1044

L
Lennert Buytenhek 已提交
1045 1046
config PLAT_ORION
	bool
1047
	select CLKSRC_MMIO
1048
	select HAVE_SCHED_CLOCK
L
Lennert Buytenhek 已提交
1049

1050 1051 1052
config PLAT_PXA
	bool

1053 1054 1055
config PLAT_VERSATILE
	bool

1056 1057
config ARM_TIMER_SP804
	bool
1058
	select CLKSRC_MMIO
1059

L
Linus Torvalds 已提交
1060 1061
source arch/arm/mm/Kconfig

1062 1063
config IWMMXT
	bool "Enable iWMMXt support"
1064 1065
	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
1066 1067 1068 1069
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

L
Linus Torvalds 已提交
1070 1071 1072 1073 1074 1075
#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
	bool
	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
	default y

1076
config CPU_HAS_PMU
1077
	depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
1078
		   (!ARCH_OMAP3 || OMAP3_EMU)
1079 1080 1081
	default y
	bool

1082 1083 1084 1085 1086
config MULTI_IRQ_HANDLER
	bool
	help
	  Allow each machine to specify it's own IRQ handler at run time.

1087 1088 1089 1090
if !MMU
source "arch/arm/Kconfig-nommu"
endif

1091 1092
config ARM_ERRATA_411920
	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1093
	depends on CPU_V6 || CPU_V6K
1094 1095 1096 1097 1098 1099
	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.

1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115
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.

1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128
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.

1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
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.

1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
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.

1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166
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.

1167 1168
config PL310_ERRATA_588369
	bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1169
	depends on CACHE_L2X0
1170 1171 1172 1173 1174 1175 1176 1177
	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
1178
	   invalidated as a result of these operations.
1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190

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.
1191

R
Russell King 已提交
1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
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.

1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
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.

1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
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.

1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240
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.

1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251
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.

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

L
Linus Torvalds 已提交
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280
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.

1281
# Select ISA DMA controller support
L
Linus Torvalds 已提交
1282 1283
config ISA_DMA
	bool
1284
	select ISA_DMA_API
L
Linus Torvalds 已提交
1285

1286
# Select ISA DMA interface
A
Al Viro 已提交
1287 1288 1289
config ISA_DMA_API
	bool

L
Linus Torvalds 已提交
1290
config PCI
1291
	bool "PCI support" if MIGHT_HAVE_PCI
L
Linus Torvalds 已提交
1292 1293 1294 1295 1296 1297
	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.

1298 1299 1300 1301
config PCI_DOMAINS
	bool
	depends on PCI

1302 1303 1304 1305 1306 1307
config PCI_NANOENGINE
	bool "BSE nanoEngine PCI support"
	depends on SA1100_NANOENGINE
	help
	  Enable PCI on the BSE nanoEngine board.

1308 1309 1310
config PCI_SYSCALL
	def_bool PCI

L
Linus Torvalds 已提交
1311 1312 1313 1314 1315 1316
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

M
Mike Rapoport 已提交
1317 1318 1319 1320 1321 1322
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

L
Linus Torvalds 已提交
1323 1324 1325 1326 1327 1328 1329 1330
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

1331 1332
source "kernel/time/Kconfig"

L
Linus Torvalds 已提交
1333 1334
config SMP
	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1335
	depends on EXPERIMENTAL
1336
	depends on CPU_V6K || CPU_V7
1337
	depends on GENERIC_CLOCKEVENTS
1338
	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1339
		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1340
		 ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1341
		 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
1342
	select USE_GENERIC_SMP_HELPERS
1343
	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
L
Linus Torvalds 已提交
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
	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
1355
	  See also <file:Documentation/i386/IO-APIC.txt>,
L
Linus Torvalds 已提交
1356
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1357
	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
L
Linus Torvalds 已提交
1358 1359 1360

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

1361 1362 1363
config SMP_ON_UP
	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
	depends on EXPERIMENTAL
1364
	depends on SMP && !XIP_KERNEL
1365 1366 1367 1368 1369 1370 1371 1372 1373
	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.

1374 1375 1376 1377 1378 1379
config HAVE_ARM_SCU
	bool
	depends on SMP
	help
	  This option enables support for the ARM system coherency unit

1380 1381 1382
config HAVE_ARM_TWD
	bool
	depends on SMP
R
Russell King 已提交
1383
	select TICK_ONESHOT
1384 1385 1386
	help
	  This options enables support for the ARM timer and watchdog unit

1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409
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
1410 1411 1412 1413 1414 1415
config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

1416 1417 1418
config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
	depends on SMP && HOTPLUG && EXPERIMENTAL
1419
	depends on !ARCH_MSM
1420 1421 1422 1423
	help
	  Say Y here to experiment with turning CPUs off and on.  CPUs
	  can be controlled through /sys/devices/system/cpu.

1424 1425
config LOCAL_TIMERS
	bool "Use local timer interrupts"
1426
	depends on SMP
1427
	default y
1428
	select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
1429 1430 1431 1432 1433 1434
	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.

1435
source kernel/Kconfig.preempt
L
Linus Torvalds 已提交
1436

1437 1438
config HZ
	int
1439
	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
1440
		ARCH_S5P6442 || ARCH_S5PV210 || ARCH_EXYNOS4
1441
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1442
	default AT91_TIMER_HZ if ARCH_AT91
1443
	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1444 1445
	default 100

1446
config THUMB2_KERNEL
1447
	bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
1448
	depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
1449 1450 1451 1452 1453 1454 1455 1456 1457
	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.

1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488
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.

1489 1490 1491
config ARM_ASM_UNIFIED
	bool

1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506
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.

1507
config OABI_COMPAT
1508
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1509
	depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523
	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.

1524
config ARCH_HAS_HOLES_MEMORYMODEL
1525 1526
	bool

1527 1528 1529
config ARCH_SPARSEMEM_ENABLE
	bool

1530 1531 1532
config ARCH_SPARSEMEM_DEFAULT
	def_bool ARCH_SPARSEMEM_ENABLE

1533
config ARCH_SELECT_MEMORY_MODEL
R
Russell King 已提交
1534
	def_bool ARCH_SPARSEMEM_ENABLE
Y
Yasunori Goto 已提交
1535

N
Nicolas Pitre 已提交
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552
config HIGHMEM
	bool "High Memory Support (EXPERIMENTAL)"
	depends on MMU && EXPERIMENTAL
	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
1553 1554 1555 1556
config HIGHPTE
	bool "Allocate 2nd-level pagetables from highmem"
	depends on HIGHMEM

1557 1558
config HW_PERF_EVENTS
	bool "Enable hardware performance counter support for perf events"
1559
	depends on PERF_EVENTS && CPU_HAS_PMU
1560 1561 1562 1563 1564
	default y
	help
	  Enable hardware performance counter support for perf events. If
	  disabled, perf events will use software events only.

1565 1566
source "mm/Kconfig"

1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
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
1583 1584
config LEDS
	bool "Timer and CPU usage LEDs"
1585
	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1586
		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
L
Linus Torvalds 已提交
1587 1588
		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1589
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1590
		   ARCH_AT91 || ARCH_DAVINCI || \
1591
		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
L
Linus Torvalds 已提交
1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604
	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
1605 1606
			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			    || MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1607
	depends on LEDS
1608
	depends on !GENERIC_CLOCKEVENTS
L
Linus Torvalds 已提交
1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622
	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
1623 1624 1625
			!ARCH_OMAP) \
			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			|| MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637
	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
1638
	depends on CPU_CP15_MMU
L
Linus Torvalds 已提交
1639
	default y if !ARCH_EBSA110
1640
	select HAVE_PROC_CPU if PROC_FS
L
Linus Torvalds 已提交
1641
	help
1642
	  ARM processors cannot fetch/store information which is not
L
Linus Torvalds 已提交
1643 1644 1645 1646 1647 1648 1649
	  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.

1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665
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
1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679
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.

1680 1681
config CC_STACKPROTECTOR
	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1682
	depends on EXPERIMENTAL
1683 1684 1685 1686 1687 1688 1689 1690 1691 1692
	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.

1693 1694 1695 1696 1697 1698
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
1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719
endmenu

menu "Boot options"

# 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
1720 1721 1722 1723 1724 1725
	  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
1726 1727 1728 1729 1730 1731 1732 1733 1734 1735

	  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.

1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747
config ZBOOT_ROM_MMCIF
	bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
	depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
	help
	  Say Y here to include experimental MMCIF 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 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 using the
	  MMCIF hardware block.

L
Linus Torvalds 已提交
1748 1749 1750 1751 1752 1753 1754 1755 1756 1757
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).

1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768
config CMDLINE_FORCE
	bool "Always use the default kernel command string"
	depends on CMDLINE != ""
	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.

	  If unsure, say N.

L
Linus Torvalds 已提交
1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798
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
1799 1800 1801 1802 1803 1804
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
1805
	  but it is independent of the system firmware.   And like a reboot
R
Richard Purdie 已提交
1806 1807 1808 1809 1810 1811 1812
	  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.

1813 1814
config ATAGS_PROC
	bool "Export atags in procfs"
1815 1816
	depends on KEXEC
	default y
1817 1818 1819 1820
	help
	  Should the atags used to boot the kernel be exported in an "atags"
	  file in procfs. Useful with kexec.

1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833
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

1834 1835 1836 1837 1838 1839 1840 1841 1842 1843
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
1844 1845
endmenu

1846
menu "CPU Power Management"
L
Linus Torvalds 已提交
1847

1848
if ARCH_HAS_CPUFREQ
L
Linus Torvalds 已提交
1849 1850 1851

source "drivers/cpufreq/Kconfig"

Y
Yong Shen 已提交
1852 1853 1854 1855 1856 1857
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
1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874
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
1875 1876 1877 1878 1879 1880
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

1881 1882 1883 1884
config CPU_FREQ_S3C64XX
	bool "CPUfreq support for Samsung S3C64XX CPUs"
	depends on CPU_FREQ && CPU_S3C6410

B
Ben Dooks 已提交
1885 1886 1887 1888 1889 1890
config CPU_FREQ_S3C
	bool
	help
	  Internal configuration node for common cpufreq on Samsung SoC

config CPU_FREQ_S3C24XX
1891
	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
B
Ben Dooks 已提交
1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902
	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
1903
	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
B
Ben Dooks 已提交
1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924
	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

1925 1926 1927 1928 1929 1930
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
1931 1932
endif

1933 1934 1935 1936
source "drivers/cpuidle/Kconfig"

endmenu

L
Linus Torvalds 已提交
1937 1938 1939 1940 1941 1942
menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
1943
	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
L
Linus Torvalds 已提交
1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954
	---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"
1955
	depends on FPE_NWFPE
L
Linus Torvalds 已提交
1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
	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)"
1967
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
L
Linus Torvalds 已提交
1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
	---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"
1981
	depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
L
Linus Torvalds 已提交
1982 1983 1984 1985 1986 1987 1988 1989 1990
	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.

1991 1992 1993 1994 1995
config VFPv3
	bool
	depends on VFP
	default y if CPU_V7

1996 1997 1998 1999 2000 2001 2002
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
2003 2004 2005 2006 2007 2008 2009 2010
endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
2011
	depends on !AEABI
L
Linus Torvalds 已提交
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
	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
2023
source "kernel/power/Kconfig"
L
Linus Torvalds 已提交
2024

J
Johannes Berg 已提交
2025
config ARCH_SUSPEND_POSSIBLE
2026
	depends on !ARCH_S5P64X0 && !ARCH_S5P6442
2027 2028
	depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
		CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
J
Johannes Berg 已提交
2029 2030
	def_bool y

L
Linus Torvalds 已提交
2031 2032
endmenu

2033 2034
source "net/Kconfig"

2035
source "drivers/Kconfig"
L
Linus Torvalds 已提交
2036 2037 2038 2039 2040 2041 2042 2043 2044 2045

source "fs/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"