Kconfig 50.7 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3
config ARM
	bool
	default y
4
	select HAVE_AOUT
A
Adrian Bunk 已提交
5
	select HAVE_IDE
R
Russell King 已提交
6
	select HAVE_MEMBLOCK
7
	select RTC_LIB
8
	select SYS_SUPPORTS_APM_EMULATION
9
	select GENERIC_ATOMIC64 if (!CPU_32v6K)
10
	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
J
Jason Wessel 已提交
11
	select HAVE_ARCH_KGDB
M
Mathieu Desnoyers 已提交
12
	select HAVE_KPROBES if (!XIP_KERNEL)
13
	select HAVE_KRETPROBES if (HAVE_KPROBES)
14
	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
15 16
	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
17
	select HAVE_GENERIC_DMA_COHERENT
18 19
	select HAVE_KERNEL_GZIP
	select HAVE_KERNEL_LZO
20
	select HAVE_KERNEL_LZMA
21
	select HAVE_IRQ_WORK
22 23
	select HAVE_PERF_EVENTS
	select PERF_USE_VMALLOC
24
	select HAVE_REGS_AND_STACK_ACCESS_API
25
	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
L
Linus Torvalds 已提交
26 27
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
28
	  licensed by ARM Ltd and targeted at embedded applications and
L
Linus Torvalds 已提交
29
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
30
	  manufactured, but legacy ARM-based PC hardware remains popular in
L
Linus Torvalds 已提交
31 32 33
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

R
Russell King 已提交
34 35 36
config HAVE_PWM
	bool

37 38 39
config SYS_SUPPORTS_APM_EMULATION
	bool

D
David Brownell 已提交
40 41 42
config GENERIC_GPIO
	bool

43 44 45
config ARCH_USES_GETTIMEOFFSET
	bool
	default n
46

47 48 49
config GENERIC_CLOCKEVENTS
	bool

50 51 52
config GENERIC_CLOCKEVENTS_BROADCAST
	bool
	depends on GENERIC_CLOCKEVENTS
53
	default y if SMP
54

55 56 57 58
config HAVE_TCM
	bool
	select GENERIC_ALLOCATOR

59 60 61
config HAVE_PROC_CPU
	bool

A
Al Viro 已提交
62 63 64
config NO_IOPORT
	bool

L
Linus Torvalds 已提交
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
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.

91 92 93 94
config GENERIC_HARDIRQS
	bool
	default y

95 96 97 98
config STACKTRACE_SUPPORT
	bool
	default y

N
Nicolas Pitre 已提交
99 100 101 102 103
config HAVE_LATENCYTOP_SUPPORT
	bool
	depends on !SMP
	default y

104 105 106 107
config LOCKDEP_SUPPORT
	bool
	default y

R
Russell King 已提交
108 109 110 111
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

112 113 114 115 116 117 118 119
config HARDIRQS_SW_RESEND
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

N
Nick Piggin 已提交
120 121 122 123 124
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

L
Linus Torvalds 已提交
125 126 127 128 129 130 131
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

132 133 134 135 136 137
config ARCH_HAS_ILOG2_U32
	bool

config ARCH_HAS_ILOG2_U64
	bool

138 139 140 141 142 143 144
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.

145 146 147
config ARCH_HAS_CPU_IDLE_WAIT
       def_bool y

148 149 150 151
config GENERIC_HWEIGHT
	bool
	default y

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

156 157 158
config ARCH_MAY_HAVE_PC_FDC
	bool

159 160 161
config ZONE_DMA
	bool

162 163 164
config NEED_DMA_MAP_STATE
       def_bool y

L
Linus Torvalds 已提交
165 166 167 168 169 170
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

171 172 173
config ARCH_MTD_XIP
	bool

174 175 176
config GENERIC_HARDIRQS_NO__DO_IRQ
	def_bool y

177 178 179 180 181
config ARM_L1_CACHE_SHIFT_6
	bool
	help
	  Setting ARM L1 cache line size to 64 Bytes.

182 183
config VECTORS_BASE
	hex
184
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
185 186 187 188 189
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

L
Linus Torvalds 已提交
190 191
source "init/Kconfig"

192 193
source "kernel/Kconfig.freezer"

L
Linus Torvalds 已提交
194 195
menu "System Type"

196 197 198 199 200 201 202
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'.

203 204 205 206
#
# 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
207 208
choice
	prompt "ARM system type"
209
	default ARCH_VERSATILE
L
Linus Torvalds 已提交
210

211 212
config ARCH_AAEC2000
	bool "Agilent AAEC-2000 based"
213
	select CPU_ARM920T
214
	select ARM_AMBA
215
	select HAVE_CLK
216
	select ARCH_USES_GETTIMEOFFSET
217 218 219 220 221 222
	help
	  This enables support for systems based on the Agilent AAEC-2000

config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
223
	select ARCH_HAS_CPUFREQ
224
	select COMMON_CLKDEV
225
	select ICST
226
	select GENERIC_CLOCKEVENTS
227
	select PLAT_VERSATILE
228 229 230 231 232 233
	help
	  Support for ARM's Integrator platform.

config ARCH_REALVIEW
	bool "ARM Ltd. RealView family"
	select ARM_AMBA
234
	select COMMON_CLKDEV
235
	select ICST
236
	select GENERIC_CLOCKEVENTS
237
	select ARCH_WANT_OPTIONAL_GPIOLIB
238
	select PLAT_VERSATILE
239
	select ARM_TIMER_SP804
240
	select GPIO_PL061 if GPIOLIB
241 242 243 244 245 246 247
	help
	  This enables support for ARM Ltd RealView boards.

config ARCH_VERSATILE
	bool "ARM Ltd. Versatile family"
	select ARM_AMBA
	select ARM_VIC
248
	select COMMON_CLKDEV
249
	select ICST
250
	select GENERIC_CLOCKEVENTS
251
	select ARCH_WANT_OPTIONAL_GPIOLIB
252
	select PLAT_VERSATILE
253
	select ARM_TIMER_SP804
254 255 256
	help
	  This enables support for ARM Ltd Versatile board.

257 258 259 260 261 262 263 264 265 266 267 268 269
config ARCH_VEXPRESS
	bool "ARM Ltd. Versatile Express family"
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select ARM_AMBA
	select ARM_TIMER_SP804
	select COMMON_CLKDEV
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	select ICST
	select PLAT_VERSATILE
	help
	  This enables support for the ARM Ltd Versatile Express boards.

270 271
config ARCH_AT91
	bool "Atmel AT91"
272
	select ARCH_REQUIRE_GPIOLIB
D
David Brownell 已提交
273
	select HAVE_CLK
274
	help
275 276
	  This enables support for systems based on the Atmel AT91RM9200,
	  AT91SAM9 and AT91CAP9 processors.
277

278 279 280 281 282 283 284 285 286 287 288
config ARCH_BCMRING
	bool "Broadcom BCMRING"
	depends on MMU
	select CPU_V6
	select ARM_AMBA
	select COMMON_CLKDEV
	select GENERIC_CLOCKEVENTS
	select ARCH_WANT_OPTIONAL_GPIOLIB
	help
	  Support for Broadcom's BCMRing platform.

L
Linus Torvalds 已提交
289
config ARCH_CLPS711X
290
	bool "Cirrus Logic CLPS711x/EP721x-based"
291
	select CPU_ARM720T
292
	select ARCH_USES_GETTIMEOFFSET
293 294
	help
	  Support for Cirrus Logic 711x/721x based boards.
L
Linus Torvalds 已提交
295

296 297 298 299 300
config ARCH_CNS3XXX
	bool "Cavium Networks CNS3XXX family"
	select CPU_V6
	select GENERIC_CLOCKEVENTS
	select ARM_GIC
301
	select PCI_DOMAINS if PCI
302 303 304
	help
	  Support for Cavium Networks CNS3XXX platform.

305 306 307 308
config ARCH_GEMINI
	bool "Cortina Systems Gemini"
	select CPU_FA526
	select ARCH_REQUIRE_GPIOLIB
309
	select ARCH_USES_GETTIMEOFFSET
310 311 312
	help
	  Support for the Cortina Systems Gemini family SoCs

L
Linus Torvalds 已提交
313 314
config ARCH_EBSA110
	bool "EBSA-110"
315
	select CPU_SA110
316
	select ISA
317
	select NO_IOPORT
318
	select ARCH_USES_GETTIMEOFFSET
L
Linus Torvalds 已提交
319 320
	help
	  This is an evaluation board for the StrongARM processor available
321
	  from Digital. It has limited hardware on-board, including an
L
Linus Torvalds 已提交
322 323 324
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

325 326
config ARCH_EP93XX
	bool "EP93xx-based"
327
	select CPU_ARM920T
328 329
	select ARM_AMBA
	select ARM_VIC
330
	select COMMON_CLKDEV
M
Michael Buesch 已提交
331
	select ARCH_REQUIRE_GPIOLIB
332
	select ARCH_HAS_HOLES_MEMORYMODEL
333
	select ARCH_USES_GETTIMEOFFSET
334 335 336
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

L
Linus Torvalds 已提交
337 338
config ARCH_FOOTBRIDGE
	bool "FootBridge"
339
	select CPU_SA110
L
Linus Torvalds 已提交
340
	select FOOTBRIDGE
341
	select ARCH_USES_GETTIMEOFFSET
342 343 344
	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
345

346 347 348 349
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
350
	select COMMON_CLKDEV
351 352 353
	help
	  Support for Freescale MXC/iMX-based family of processors

354 355 356 357 358 359 360 361 362 363
config ARCH_STMP3XXX
	bool "Freescale STMP3xxx"
	select CPU_ARM926T
	select COMMON_CLKDEV
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
	select USB_ARCH_HAS_EHCI
	help
	  Support for systems based on the Freescale 3xxx CPUs.

364 365
config ARCH_NETX
	bool "Hilscher NetX based"
366
	select CPU_ARM926T
367
	select ARM_VIC
368
	select GENERIC_CLOCKEVENTS
369
	help
370 371 372 373
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
374
	select CPU_ARM720T
375
	select ISA_DMA_API
376
	select ARCH_USES_GETTIMEOFFSET
377 378 379
	help
	  This enables support for systems based on the Hynix HMS720x

380 381 382
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
383
	select CPU_XSC3
384 385 386
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
387
	select VMSPLIT_1G
388 389 390
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

391 392
config ARCH_IOP32X
	bool "IOP32x-based"
393
	depends on MMU
394
	select CPU_XSCALE
395
	select PLAT_IOP
396
	select PCI
397
	select ARCH_REQUIRE_GPIOLIB
398
	help
399 400 401 402 403 404
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
405
	select CPU_XSCALE
406
	select PLAT_IOP
407
	select PCI
408
	select ARCH_REQUIRE_GPIOLIB
409 410
	help
	  Support for Intel's IOP33X (XScale) family of processors.
L
Linus Torvalds 已提交
411

412 413
config ARCH_IXP23XX
 	bool "IXP23XX-based"
414
	depends on MMU
415
	select CPU_XSC3
416
 	select PCI
417
	select ARCH_USES_GETTIMEOFFSET
418
	help
419
	  Support for Intel's IXP23xx (XScale) family of processors.
L
Linus Torvalds 已提交
420 421 422

config ARCH_IXP2000
	bool "IXP2400/2800-based"
423
	depends on MMU
424
	select CPU_XSCALE
425
	select PCI
426
	select ARCH_USES_GETTIMEOFFSET
427 428
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
L
Linus Torvalds 已提交
429

430 431
config ARCH_IXP4XX
	bool "IXP4xx-based"
432
	depends on MMU
433
	select CPU_XSCALE
434
	select GENERIC_GPIO
435
	select GENERIC_CLOCKEVENTS
R
Russell King 已提交
436
	select DMABOUNCE if PCI
437
	help
438
	  Support for Intel's IXP4XX (XScale) family of processors.
439

440 441 442 443 444 445 446 447 448
config ARCH_DOVE
	bool "Marvell Dove"
	select PCI
	select ARCH_REQUIRE_GPIOLIB
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the Marvell Dove SoC 88AP510

449 450
config ARCH_KIRKWOOD
	bool "Marvell Kirkwood"
451
	select CPU_FEROCEON
452
	select PCI
453
	select ARCH_REQUIRE_GPIOLIB
454 455 456 457 458 459
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell Kirkwood series SoCs:
	  88F6180, 88F6192 and 88F6281.

460 461
config ARCH_LOKI
	bool "Marvell Loki (88RC8480)"
462
	select CPU_FEROCEON
463 464 465 466 467
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the Marvell Loki (88RC8480) SoC.

468 469 470 471 472 473 474 475 476 477 478 479 480
config ARCH_LPC32XX
	bool "NXP LPC32XX"
	select CPU_ARM926T
	select ARCH_REQUIRE_GPIOLIB
	select HAVE_IDE
	select ARM_AMBA
	select USB_ARCH_HAS_OHCI
	select COMMON_CLKDEV
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	help
	  Support for the NXP LPC32XX family of processors

481 482
config ARCH_MV78XX0
	bool "Marvell MV78xx0"
483
	select CPU_FEROCEON
484
	select PCI
485
	select ARCH_REQUIRE_GPIOLIB
486 487 488 489 490 491
	select GENERIC_CLOCKEVENTS
	select PLAT_ORION
	help
	  Support for the following Marvell MV78xx0 series SoCs:
	  MV781x0, MV782x0.

492
config ARCH_ORION5X
493 494
	bool "Marvell Orion"
	depends on MMU
495
	select CPU_FEROCEON
T
Tzachi Perelstein 已提交
496
	select PCI
497
	select ARCH_REQUIRE_GPIOLIB
498
	select GENERIC_CLOCKEVENTS
L
Lennert Buytenhek 已提交
499
	select PLAT_ORION
500
	help
501
	  Support for the following Marvell Orion 5x series SoCs:
502
	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
503
	  Orion-2 (5281), Orion-1-90 (6183).
504

505
config ARCH_MMP
506
	bool "Marvell PXA168/910/MMP2"
507 508 509 510 511 512
	depends on MMU
	select ARCH_REQUIRE_GPIOLIB
	select COMMON_CLKDEV
	select GENERIC_CLOCKEVENTS
	select TICK_ONESHOT
	select PLAT_PXA
H
Haojian Zhuang 已提交
513
	select SPARSE_IRQ
514
	help
515
	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
516 517 518 519

config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
	select CPU_ARM922T
520
	select ARCH_REQUIRE_GPIOLIB
521
	select ARCH_USES_GETTIMEOFFSET
522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540
	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
541
	select ARCH_REQUIRE_GPIOLIB
542
	select COMMON_CLKDEV
543
	select GENERIC_CLOCKEVENTS
544
	help
545 546 547 548 549 550 551
	  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>
552

553 554 555 556 557 558 559 560
config ARCH_NUC93X
	bool "Nuvoton NUC93X CPU"
	select CPU_ARM926T
	select COMMON_CLKDEV
	help
	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
	  low-power and high performance MPEG-4/JPEG multimedia controller chip.

561 562 563 564 565 566
config ARCH_TEGRA
	bool "NVIDIA Tegra"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	select GENERIC_GPIO
	select HAVE_CLK
C
Colin Cross 已提交
567
	select COMMON_CLKDEV
568
	select ARCH_HAS_BARRIERS if CACHE_L2X0
C
Colin Cross 已提交
569
	select ARCH_HAS_CPUFREQ
570 571 572 573
	help
	  This enables support for NVIDIA Tegra based systems (Tegra APX,
	  Tegra 6xx and Tegra 2 series).

574 575
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
576
	select CPU_ARM926T
R
Russell King 已提交
577
	select COMMON_CLKDEV
578
	select ARCH_USES_GETTIMEOFFSET
579 580 581
	help
	  This enables support for Philips PNX4008 mobile platform.

L
Linus Torvalds 已提交
582
config ARCH_PXA
E
eric miao 已提交
583
	bool "PXA2xx/PXA3xx-based"
584
	depends on MMU
585
	select ARCH_MTD_XIP
586
	select ARCH_HAS_CPUFREQ
587
	select COMMON_CLKDEV
M
Michael Buesch 已提交
588
	select ARCH_REQUIRE_GPIOLIB
589
	select GENERIC_CLOCKEVENTS
590
	select TICK_ONESHOT
591
	select PLAT_PXA
592
	select SPARSE_IRQ
593
	help
E
eric miao 已提交
594
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
L
Linus Torvalds 已提交
595

596 597
config ARCH_MSM
	bool "Qualcomm MSM"
598
	select HAVE_CLK
599
	select GENERIC_CLOCKEVENTS
P
Pavel Machek 已提交
600
	select ARCH_REQUIRE_GPIOLIB
601
	help
602 603 604 605 606
	  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).
607

608 609 610 611 612
config ARCH_SHMOBILE
	bool "Renesas SH-Mobile"
	help
	  Support for Renesas's SH-Mobile ARM platforms

L
Linus Torvalds 已提交
613 614 615 616 617
config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
618
	select ARCH_MAY_HAVE_PC_FDC
619
	select HAVE_PATA_PLATFORM
620
	select ISA_DMA_API
A
Al Viro 已提交
621
	select NO_IOPORT
622
	select ARCH_SPARSEMEM_ENABLE
623
	select ARCH_USES_GETTIMEOFFSET
L
Linus Torvalds 已提交
624 625 626 627 628 629
	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"
630
	select CPU_SA1100
631
	select ISA
632
	select ARCH_SPARSEMEM_ENABLE
633
	select ARCH_MTD_XIP
634
	select ARCH_HAS_CPUFREQ
R
Russell King 已提交
635
	select CPU_FREQ
636
	select GENERIC_CLOCKEVENTS
637
	select HAVE_CLK
638
	select TICK_ONESHOT
M
Michael Buesch 已提交
639
	select ARCH_REQUIRE_GPIOLIB
640 641
	help
	  Support for StrongARM 11x0 based boards.
L
Linus Torvalds 已提交
642 643

config ARCH_S3C2410
644
	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
D
David Brownell 已提交
645
	select GENERIC_GPIO
B
Ben Dooks 已提交
646
	select ARCH_HAS_CPUFREQ
647
	select HAVE_CLK
648
	select ARCH_USES_GETTIMEOFFSET
649
	select HAVE_S3C2410_I2C if I2C
L
Linus Torvalds 已提交
650 651 652
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
653
	  the Samsung SMDK2410 development board (and derivatives).
L
Linus Torvalds 已提交
654

655 656 657 658
	  Note, the S3C2416 and the S3C2450 are so close that they even share
	  the same SoC ID code. This means that there is no seperate machine
	  directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.

B
Ben Dooks 已提交
659 660
config ARCH_S3C64XX
	bool "Samsung S3C64XX"
661
	select PLAT_SAMSUNG
662 663
	select CPU_V6
	select ARM_VIC
B
Ben Dooks 已提交
664
	select HAVE_CLK
665
	select NO_IOPORT
666
	select ARCH_USES_GETTIMEOFFSET
667
	select ARCH_HAS_CPUFREQ
668 669 670 671 672 673 674 675 676 677 678
	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
679
	select HAVE_S3C2410_I2C if I2C
680
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
B
Ben Dooks 已提交
681 682 683
	help
	  Samsung S3C64XX series based systems

684 685
config ARCH_S5P64X0
	bool "Samsung S5P6440 S5P6450"
686 687 688
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
689
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
690
	select ARCH_USES_GETTIMEOFFSET
691
	select HAVE_S3C2410_I2C if I2C
692
	select HAVE_S3C_RTC
693
	help
694 695
	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
	  SMDK6450.
696

697 698 699 700 701
config ARCH_S5P6442
	bool "Samsung S5P6442"
	select CPU_V6
	select GENERIC_GPIO
	select HAVE_CLK
702
	select ARCH_USES_GETTIMEOFFSET
703
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
704 705 706
	help
	  Samsung S5P6442 CPU based systems

707 708
config ARCH_S5PC100
	bool "Samsung S5PC100"
709 710 711
	select GENERIC_GPIO
	select HAVE_CLK
	select CPU_V7
712
	select ARM_L1_CACHE_SHIFT_6
713
	select ARCH_USES_GETTIMEOFFSET
714
	select HAVE_S3C2410_I2C if I2C
715
	select HAVE_S3C_RTC
716
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
717
	help
718
	  Samsung S5PC100 series based systems
719

720 721 722
config ARCH_S5PV210
	bool "Samsung S5PV210/S5PC110"
	select CPU_V7
723
	select ARCH_SPARSEMEM_ENABLE
724 725 726
	select GENERIC_GPIO
	select HAVE_CLK
	select ARM_L1_CACHE_SHIFT_6
727
	select ARCH_HAS_CPUFREQ
728
	select ARCH_USES_GETTIMEOFFSET
729
	select HAVE_S3C2410_I2C if I2C
730
	select HAVE_S3C_RTC
731
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
732 733 734
	help
	  Samsung S5PV210/S5PC110 series based systems

735 736 737
config ARCH_S5PV310
	bool "Samsung S5PV310/S5PC210"
	select CPU_V7
738
	select ARCH_SPARSEMEM_ENABLE
739 740 741
	select GENERIC_GPIO
	select HAVE_CLK
	select GENERIC_CLOCKEVENTS
C
Changhwan Youn 已提交
742
	select HAVE_S3C_RTC
743
	select HAVE_S3C2410_I2C if I2C
744
	select HAVE_S3C2410_WATCHDOG if WATCHDOG
745 746 747
	help
	  Samsung S5PV310 series based systems

L
Linus Torvalds 已提交
748 749
config ARCH_SHARK
	bool "Shark"
750
	select CPU_SA110
751 752
	select ISA
	select ISA_DMA
753
	select ZONE_DMA
754
	select PCI
755
	select ARCH_USES_GETTIMEOFFSET
756 757 758
	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
759

H
Hans J. Koch 已提交
760 761 762 763 764 765 766 767 768
config ARCH_TCC_926
	bool "Telechips TCC ARM926-based systems"
	select CPU_ARM926T
	select HAVE_CLK
	select COMMON_CLKDEV
	select GENERIC_CLOCKEVENTS
	help
	  Support for Telechips TCC ARM926-based systems.

L
Linus Torvalds 已提交
769 770
config ARCH_LH7A40X
	bool "Sharp LH7A40X"
771
	select CPU_ARM922T
772
	select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
773
	select ARCH_USES_GETTIMEOFFSET
L
Linus Torvalds 已提交
774 775 776 777 778 779
	help
	  Say Y here for systems based on one of the Sharp LH7A40X
	  System on a Chip processors.  These CPUs include an ARM922T
	  core with a wide array of integrated devices for
	  hand-held and low-power applications.

780 781 782 783
config ARCH_U300
	bool "ST-Ericsson U300 Series"
	depends on MMU
	select CPU_ARM926T
784
	select HAVE_TCM
785 786 787 788 789 790 791 792
	select ARM_AMBA
	select ARM_VIC
	select GENERIC_CLOCKEVENTS
	select COMMON_CLKDEV
	select GENERIC_GPIO
	help
	  Support for ST-Ericsson U300 series mobile platforms.

793 794 795 796 797 798
config ARCH_U8500
	bool "ST-Ericsson U8500 Series"
	select CPU_V7
	select ARM_AMBA
	select GENERIC_CLOCKEVENTS
	select COMMON_CLKDEV
799
	select ARCH_REQUIRE_GPIOLIB
800 801 802 803 804 805 806 807 808 809 810 811 812 813
	help
	  Support for ST-Ericsson's Ux500 architecture

config ARCH_NOMADIK
	bool "STMicroelectronics Nomadik"
	select ARM_AMBA
	select ARM_VIC
	select CPU_ARM926T
	select COMMON_CLKDEV
	select GENERIC_CLOCKEVENTS
	select ARCH_REQUIRE_GPIOLIB
	help
	  Support for the Nomadik platform by ST-Ericsson

814 815 816
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_CLOCKEVENTS
817
	select ARCH_REQUIRE_GPIOLIB
818
	select ZONE_DMA
819
	select HAVE_IDE
820
	select COMMON_CLKDEV
D
David Brownell 已提交
821
	select GENERIC_ALLOCATOR
822
	select ARCH_HAS_HOLES_MEMORYMODEL
823 824 825
	help
	  Support for TI's DaVinci platform.

826 827
config ARCH_OMAP
	bool "TI OMAP"
828
	select HAVE_CLK
M
Michael Buesch 已提交
829
	select ARCH_REQUIRE_GPIOLIB
830
	select ARCH_HAS_CPUFREQ
831
	select GENERIC_CLOCKEVENTS
832
	select ARCH_HAS_HOLES_MEMORYMODEL
833
	help
834
	  Support for TI's OMAP platform (OMAP1/2/3/4).
835

836 837 838 839 840 841 842 843 844 845
config PLAT_SPEAR
	bool "ST SPEAr"
	select ARM_AMBA
	select ARCH_REQUIRE_GPIOLIB
	select COMMON_CLKDEV
	select GENERIC_CLOCKEVENTS
	select HAVE_CLK
	help
	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).

L
Linus Torvalds 已提交
846 847
endchoice

848 849 850 851 852
#
# 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.
#
853 854 855 856 857 858
source "arch/arm/mach-aaec2000/Kconfig"

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

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

L
Linus Torvalds 已提交
859 860
source "arch/arm/mach-clps711x/Kconfig"

861 862
source "arch/arm/mach-cns3xxx/Kconfig"

863 864 865 866
source "arch/arm/mach-davinci/Kconfig"

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

867 868
source "arch/arm/mach-ep93xx/Kconfig"

L
Linus Torvalds 已提交
869 870
source "arch/arm/mach-footbridge/Kconfig"

871 872
source "arch/arm/mach-gemini/Kconfig"

873 874
source "arch/arm/mach-h720x/Kconfig"

L
Linus Torvalds 已提交
875 876
source "arch/arm/mach-integrator/Kconfig"

877 878 879
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
L
Linus Torvalds 已提交
880

881 882
source "arch/arm/mach-iop13xx/Kconfig"

L
Linus Torvalds 已提交
883 884 885 886
source "arch/arm/mach-ixp4xx/Kconfig"

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

887 888
source "arch/arm/mach-ixp23xx/Kconfig"

889 890 891 892 893 894
source "arch/arm/mach-kirkwood/Kconfig"

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

source "arch/arm/mach-lh7a40x/Kconfig"

895 896
source "arch/arm/mach-loki/Kconfig"

897 898
source "arch/arm/mach-lpc32xx/Kconfig"

899 900
source "arch/arm/mach-msm/Kconfig"

901 902
source "arch/arm/mach-mv78xx0/Kconfig"

903
source "arch/arm/plat-mxc/Kconfig"
L
Linus Torvalds 已提交
904

905
source "arch/arm/mach-netx/Kconfig"
906

907 908 909 910
source "arch/arm/mach-nomadik/Kconfig"
source "arch/arm/plat-nomadik/Kconfig"

source "arch/arm/mach-ns9xxx/Kconfig"
L
Linus Torvalds 已提交
911

R
Russell King 已提交
912
source "arch/arm/mach-nuc93x/Kconfig"
L
Linus Torvalds 已提交
913

914 915 916
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
L
Linus Torvalds 已提交
917

918 919
source "arch/arm/mach-omap2/Kconfig"

920
source "arch/arm/mach-orion5x/Kconfig"
921

922 923
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/plat-pxa/Kconfig"
924

925 926 927 928 929
source "arch/arm/mach-mmp/Kconfig"

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

source "arch/arm/mach-sa1100/Kconfig"
930

931
source "arch/arm/plat-samsung/Kconfig"
932
source "arch/arm/plat-s3c24xx/Kconfig"
933
source "arch/arm/plat-s5p/Kconfig"
934

935
source "arch/arm/plat-spear/Kconfig"
936

H
Hans J. Koch 已提交
937 938
source "arch/arm/plat-tcc/Kconfig"

939 940
if ARCH_S3C2410
source "arch/arm/mach-s3c2400/Kconfig"
L
Linus Torvalds 已提交
941
source "arch/arm/mach-s3c2410/Kconfig"
942
source "arch/arm/mach-s3c2412/Kconfig"
Y
Yauhen Kharuzhy 已提交
943
source "arch/arm/mach-s3c2416/Kconfig"
944
source "arch/arm/mach-s3c2440/Kconfig"
945
source "arch/arm/mach-s3c2443/Kconfig"
946
endif
L
Linus Torvalds 已提交
947

B
Ben Dooks 已提交
948
if ARCH_S3C64XX
949
source "arch/arm/mach-s3c64xx/Kconfig"
B
Ben Dooks 已提交
950 951
endif

952
source "arch/arm/mach-s5p64x0/Kconfig"
953

954
source "arch/arm/mach-s5p6442/Kconfig"
955

956 957
source "arch/arm/mach-s5pc100/Kconfig"

958 959
source "arch/arm/mach-s5pv210/Kconfig"

960 961
source "arch/arm/mach-s5pv310/Kconfig"

962
source "arch/arm/mach-shmobile/Kconfig"
963

964
source "arch/arm/plat-stmp3xxx/Kconfig"
965

966 967
source "arch/arm/mach-tegra/Kconfig"

968
source "arch/arm/mach-u300/Kconfig"
L
Linus Torvalds 已提交
969

970
source "arch/arm/mach-ux500/Kconfig"
L
Linus Torvalds 已提交
971 972 973

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

974 975
source "arch/arm/mach-vexpress/Kconfig"

976 977
source "arch/arm/mach-w90x900/Kconfig"

L
Linus Torvalds 已提交
978 979 980 981
# Definitions to make life easier
config ARCH_ACORN
	bool

982 983
config PLAT_IOP
	bool
M
Mikael Pettersson 已提交
984
	select GENERIC_CLOCKEVENTS
985

L
Lennert Buytenhek 已提交
986 987 988
config PLAT_ORION
	bool

989 990 991
config PLAT_PXA
	bool

992 993 994
config PLAT_VERSATILE
	bool

995 996 997
config ARM_TIMER_SP804
	bool

L
Linus Torvalds 已提交
998 999
source arch/arm/mm/Kconfig

1000 1001
config IWMMXT
	bool "Enable iWMMXt support"
1002 1003
	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
	default y if PXA27x || PXA3xx || ARCH_MMP
1004 1005 1006 1007
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

L
Linus Torvalds 已提交
1008 1009 1010 1011 1012 1013
#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
	bool
	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
	default y

1014
config CPU_HAS_PMU
1015 1016
	depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
		   (!ARCH_OMAP3 || OMAP3_EMU)
1017 1018 1019
	default y
	bool

1020 1021 1022 1023
if !MMU
source "arch/arm/Kconfig-nommu"
endif

1024 1025
config ARM_ERRATA_411920
	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1026
	depends on CPU_V6
1027 1028 1029 1030 1031 1032
	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.

1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
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.

1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061
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.

1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073
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.

1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085
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.

1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
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.

1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
config PL310_ERRATA_588369
	bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
	depends on CACHE_L2X0 && ARCH_OMAP4
	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
	   invalidated as a result of these operations. Note that this errata
	   uses Texas Instrument's secure monitor api.
1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124

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.
1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138

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.

L
Linus Torvalds 已提交
1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156
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.

1157
# Select ISA DMA controller support
L
Linus Torvalds 已提交
1158 1159
config ISA_DMA
	bool
1160
	select ISA_DMA_API
L
Linus Torvalds 已提交
1161

1162
# Select ISA DMA interface
A
Al Viro 已提交
1163 1164 1165
config ISA_DMA_API
	bool

L
Linus Torvalds 已提交
1166
config PCI
1167
	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
L
Linus Torvalds 已提交
1168 1169 1170 1171 1172 1173
	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.

1174 1175 1176 1177
config PCI_DOMAINS
	bool
	depends on PCI

1178 1179 1180
config PCI_SYSCALL
	def_bool PCI

L
Linus Torvalds 已提交
1181 1182 1183 1184 1185 1186
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

M
Mike Rapoport 已提交
1187 1188 1189 1190 1191 1192
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

L
Linus Torvalds 已提交
1193 1194 1195 1196 1197 1198 1199 1200
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

1201 1202
source "kernel/time/Kconfig"

L
Linus Torvalds 已提交
1203 1204
config SMP
	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1205
	depends on EXPERIMENTAL
1206
	depends on GENERIC_CLOCKEVENTS
1207 1208 1209
	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
		 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
1210
	select USE_GENERIC_SMP_HELPERS
1211
	select HAVE_ARM_SCU
L
Linus Torvalds 已提交
1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222
	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
1223
	  See also <file:Documentation/i386/IO-APIC.txt>,
L
Linus Torvalds 已提交
1224
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1225
	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
L
Linus Torvalds 已提交
1226 1227 1228

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

1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
config SMP_ON_UP
	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	depends on SMP && !XIP && !THUMB2_KERNEL
	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.

1242 1243 1244 1245 1246 1247
config HAVE_ARM_SCU
	bool
	depends on SMP
	help
	  This option enables support for the ARM system coherency unit

1248 1249 1250 1251 1252 1253
config HAVE_ARM_TWD
	bool
	depends on SMP
	help
	  This options enables support for the ARM timer and watchdog unit

1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276
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
1277 1278 1279 1280 1281 1282
config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

1283 1284 1285 1286 1287 1288 1289
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.

1290 1291
config LOCAL_TIMERS
	bool "Use local timer interrupts"
1292
	depends on SMP
1293
	default y
1294
	select HAVE_ARM_TWD
1295 1296 1297 1298 1299 1300
	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.

1301
source kernel/Kconfig.preempt
L
Linus Torvalds 已提交
1302

1303 1304
config HZ
	int
1305
	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
R
Russell King 已提交
1306
		ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
1307
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1308
	default AT91_TIMER_HZ if ARCH_AT91
1309
	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1310 1311
	default 100

1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323
config THUMB2_KERNEL
	bool "Compile the kernel in Thumb-2 mode"
	depends on CPU_V7 && EXPERIMENTAL
	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.

1324 1325 1326
config ARM_ASM_UNIFIED
	bool

1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
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.

1342
config OABI_COMPAT
1343
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1344
	depends on AEABI && EXPERIMENTAL
1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358
	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.

1359
config ARCH_HAS_HOLES_MEMORYMODEL
1360 1361
	bool

1362 1363 1364
config ARCH_SPARSEMEM_ENABLE
	bool

1365 1366 1367
config ARCH_SPARSEMEM_DEFAULT
	def_bool ARCH_SPARSEMEM_ENABLE

1368
config ARCH_SELECT_MEMORY_MODEL
R
Russell King 已提交
1369
	def_bool ARCH_SPARSEMEM_ENABLE
Y
Yasunori Goto 已提交
1370

N
Nicolas Pitre 已提交
1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387
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
1388 1389 1390 1391 1392
config HIGHPTE
	bool "Allocate 2nd-level pagetables from highmem"
	depends on HIGHMEM
	depends on !OUTER_CACHE

1393 1394
config HW_PERF_EVENTS
	bool "Enable hardware performance counter support for perf events"
1395
	depends on PERF_EVENTS && CPU_HAS_PMU
1396 1397 1398 1399 1400
	default y
	help
	  Enable hardware performance counter support for perf events. If
	  disabled, perf events will use software events only.

1401
config SPARSE_IRQ
1402
	def_bool n
1403 1404 1405 1406 1407 1408 1409
	help
	  This enables support for sparse irqs. This is useful in general
	  as most CPUs have a fairly sparse array of IRQ vectors, which
	  the irq_desc then maps directly on to. Systems with a high
	  number of off-chip IRQs will want to treat this as
	  experimental until they have been independently verified.

1410 1411
source "mm/Kconfig"

1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427
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
1428 1429
config LEDS
	bool "Timer and CPU usage LEDs"
1430
	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1431
		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
L
Linus Torvalds 已提交
1432 1433
		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1434
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1435
		   ARCH_AT91 || ARCH_DAVINCI || \
1436
		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
L
Linus Torvalds 已提交
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449
	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
1450 1451
			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			    || MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1452
	depends on LEDS
1453
	depends on !GENERIC_CLOCKEVENTS
L
Linus Torvalds 已提交
1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467
	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
1468 1469 1470
			!ARCH_OMAP) \
			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			|| MACH_OMAP_PERSEUS2
L
Linus Torvalds 已提交
1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
	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
1483
	depends on CPU_CP15_MMU
L
Linus Torvalds 已提交
1484
	default y if !ARCH_EBSA110
1485
	select HAVE_PROC_CPU if PROC_FS
L
Linus Torvalds 已提交
1486
	help
1487
	  ARM processors cannot fetch/store information which is not
L
Linus Torvalds 已提交
1488 1489 1490 1491 1492 1493 1494
	  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.

1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510
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
1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524
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.

1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536
config CC_STACKPROTECTOR
	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
	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.

1537 1538 1539 1540 1541 1542
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
1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563
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
1564 1565 1566 1567 1568 1569
	  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
1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589

	  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.

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).

1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600
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
1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630
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
1631 1632 1633 1634 1635 1636
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
1637
	  but it is independent of the system firmware.   And like a reboot
R
Richard Purdie 已提交
1638 1639 1640 1641 1642 1643 1644
	  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.

1645 1646
config ATAGS_PROC
	bool "Export atags in procfs"
1647 1648
	depends on KEXEC
	default y
1649 1650 1651 1652
	help
	  Should the atags used to boot the kernel be exported in an "atags"
	  file in procfs. Useful with kexec.

1653 1654 1655 1656 1657 1658 1659 1660 1661 1662
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
1663 1664
endmenu

1665
menu "CPU Power Management"
L
Linus Torvalds 已提交
1666

1667
if ARCH_HAS_CPUFREQ
L
Linus Torvalds 已提交
1668 1669 1670

source "drivers/cpufreq/Kconfig"

Y
Yong Shen 已提交
1671 1672 1673 1674 1675 1676
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
1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693
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
1694 1695 1696 1697 1698 1699
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

1700 1701 1702 1703
config CPU_FREQ_S3C64XX
	bool "CPUfreq support for Samsung S3C64XX CPUs"
	depends on CPU_FREQ && CPU_S3C6410

B
Ben Dooks 已提交
1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743
config CPU_FREQ_S3C
	bool
	help
	  Internal configuration node for common cpufreq on Samsung SoC

config CPU_FREQ_S3C24XX
	bool "CPUfreq driver for Samsung S3C24XX series CPUs"
	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
	bool "Support CPUfreq changing of PLL frequency"
	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

1744 1745 1746 1747 1748 1749
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
1750 1751
endif

1752 1753 1754 1755
source "drivers/cpuidle/Kconfig"

endmenu

L
Linus Torvalds 已提交
1756 1757 1758 1759 1760 1761
menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
1762
	depends on !AEABI || OABI_COMPAT
L
Linus Torvalds 已提交
1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773
	---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"
1774
	depends on FPE_NWFPE
L
Linus Torvalds 已提交
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785
	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)"
1786
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
L
Linus Torvalds 已提交
1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799
	---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"
R
Russell King 已提交
1800
	depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
L
Linus Torvalds 已提交
1801 1802 1803 1804 1805 1806 1807 1808 1809
	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.

1810 1811 1812 1813 1814
config VFPv3
	bool
	depends on VFP
	default y if CPU_V7

1815 1816 1817 1818 1819 1820 1821
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
1822 1823 1824 1825 1826 1827 1828 1829
endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
1830
	depends on !AEABI
L
Linus Torvalds 已提交
1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841
	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
1842
source "kernel/power/Kconfig"
L
Linus Torvalds 已提交
1843

J
Johannes Berg 已提交
1844 1845 1846
config ARCH_SUSPEND_POSSIBLE
	def_bool y

L
Linus Torvalds 已提交
1847 1848
endmenu

1849 1850
source "net/Kconfig"

1851
source "drivers/Kconfig"
L
Linus Torvalds 已提交
1852 1853 1854 1855 1856 1857 1858 1859 1860 1861

source "fs/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"