Kconfig 29.3 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1 2 3 4 5 6 7 8 9 10
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "Linux Kernel Configuration"

config ARM
	bool
	default y
11
	select RTC_LIB
12
	select SYS_SUPPORTS_APM_EMULATION
Linus Torvalds's avatar
Linus Torvalds committed
13 14
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
15
	  licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds's avatar
Linus Torvalds committed
16
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
17
	  manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds's avatar
Linus Torvalds committed
18 19 20
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

21 22 23
config SYS_SUPPORTS_APM_EMULATION
	bool

24 25 26 27
config GENERIC_GPIO
	bool
	default n

28 29 30 31
config GENERIC_TIME
	bool
	default n

32 33 34 35
config GENERIC_CLOCKEVENTS
	bool
	default n

Linus Torvalds's avatar
Linus Torvalds committed
36 37 38 39
config MMU
	bool
	default y

Al Viro's avatar
Al Viro committed
40 41 42 43
config NO_IOPORT
	bool
	default n

Linus Torvalds's avatar
Linus Torvalds committed
44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
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.

70 71 72 73
config GENERIC_HARDIRQS
	bool
	default y

74 75 76 77 78 79 80 81
config STACKTRACE_SUPPORT
	bool
	default y

config LOCKDEP_SUPPORT
	bool
	default y

Russell King's avatar
Russell King committed
82 83 84 85
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

86 87 88 89 90 91 92 93
config HARDIRQS_SW_RESEND
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

Nick Piggin's avatar
Nick Piggin committed
94 95 96 97 98
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

Linus Torvalds's avatar
Linus Torvalds committed
99 100 101 102 103 104 105
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

106 107 108 109 110 111 112 113
config ARCH_HAS_ILOG2_U32
	bool
	default n

config ARCH_HAS_ILOG2_U64
	bool
	default n

114 115 116 117
config GENERIC_HWEIGHT
	bool
	default y

Linus Torvalds's avatar
Linus Torvalds committed
118 119 120 121
config GENERIC_CALIBRATE_DELAY
	bool
	default y

122 123 124
config ARCH_MAY_HAVE_PC_FDC
	bool

125 126 127 128
config ZONE_DMA
	bool
	default y

Linus Torvalds's avatar
Linus Torvalds committed
129 130 131 132 133 134
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

135 136 137
config ARCH_MTD_XIP
	bool

138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154
if OPROFILE

config OPROFILE_ARMV6
	def_bool y
	depends on CPU_V6 && !SMP
	select OPROFILE_ARM11_CORE

config OPROFILE_MPCORE
	def_bool y
	depends on CPU_V6 && SMP
	select OPROFILE_ARM11_CORE

config OPROFILE_ARM11_CORE
	bool

endif

155 156
config VECTORS_BASE
	hex
157
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
158 159 160 161 162
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

Linus Torvalds's avatar
Linus Torvalds committed
163 164 165 166 167 168
source "init/Kconfig"

menu "System Type"

choice
	prompt "ARM system type"
169
	default ARCH_VERSATILE
Linus Torvalds's avatar
Linus Torvalds committed
170

171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
config ARCH_AAEC2000
	bool "Agilent AAEC-2000 based"
	select ARM_AMBA
	help
	  This enables support for systems based on the Agilent AAEC-2000

config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
	select ICST525
	help
	  Support for ARM's Integrator platform.

config ARCH_REALVIEW
	bool "ARM Ltd. RealView family"
	select ARM_AMBA
	select ICST307
	help
	  This enables support for ARM Ltd RealView boards.

config ARCH_VERSATILE
	bool "ARM Ltd. Versatile family"
	select ARM_AMBA
	select ARM_VIC
	select ICST307
196
	select GENERIC_TIME
197
	select GENERIC_CLOCKEVENTS
198 199 200
	help
	  This enables support for ARM Ltd Versatile board.

201 202
config ARCH_AT91
	bool "Atmel AT91"
203
	select GENERIC_GPIO
204
	help
205 206
	  This enables support for systems based on the Atmel AT91RM9200,
	  AT91SAM9 and AT91CAP9 processors.
207

Linus Torvalds's avatar
Linus Torvalds committed
208
config ARCH_CLPS7500
209
	bool "Cirrus CL-PS7500FE"
Linus Torvalds's avatar
Linus Torvalds committed
210
	select TIMER_ACORN
211
	select ISA
212
	select NO_IOPORT
213 214
	help
	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds's avatar
Linus Torvalds committed
215 216

config ARCH_CLPS711X
217
	bool "Cirrus Logic CLPS711x/EP721x-based"
218 219
	help
	  Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds's avatar
Linus Torvalds committed
220 221 222 223 224

config ARCH_CO285
	bool "Co-EBSA285"
	select FOOTBRIDGE
	select FOOTBRIDGE_ADDIN
225 226
	help
	  Support for Intel's EBSA285 companion chip.
Linus Torvalds's avatar
Linus Torvalds committed
227 228 229

config ARCH_EBSA110
	bool "EBSA-110"
230
	select ISA
231
	select NO_IOPORT
Linus Torvalds's avatar
Linus Torvalds committed
232 233
	help
	  This is an evaluation board for the StrongARM processor available
234
	  from Digital. It has limited hardware on-board, including an
Linus Torvalds's avatar
Linus Torvalds committed
235 236 237
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

238 239 240 241
config ARCH_EP93XX
	bool "EP93xx-based"
	select ARM_AMBA
	select ARM_VIC
242
	select GENERIC_GPIO
243 244 245
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

Linus Torvalds's avatar
Linus Torvalds committed
246 247 248
config ARCH_FOOTBRIDGE
	bool "FootBridge"
	select FOOTBRIDGE
249 250 251
	help
	  Support for systems based on the DC21285 companion chip
	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds's avatar
Linus Torvalds committed
252

253 254 255
config ARCH_NETX
	bool "Hilscher NetX based"
	select ARM_VIC
256
	help
257 258 259 260 261 262 263 264 265 266
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
	select ISA_DMA_API
	help
	  This enables support for systems based on the Hynix HMS720x

config ARCH_IMX
	bool "IMX"
267
	select GENERIC_GPIO
268 269
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
270 271
	help
	  Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds's avatar
Linus Torvalds committed
272

273 274 275 276 277 278 279 280 281
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

282 283
config ARCH_IOP32X
	bool "IOP32x-based"
284
	depends on MMU
285
	select PLAT_IOP
286
	select PCI
287
	help
288 289 290 291 292 293
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
294
	select PLAT_IOP
295 296 297
	select PCI
	help
	  Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
298

299 300
config ARCH_IXP23XX
 	bool "IXP23XX-based"
301
	depends on MMU
302
 	select PCI
303
	help
304
	  Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
305 306 307

config ARCH_IXP2000
	bool "IXP2400/2800-based"
308
	depends on MMU
309
	select PCI
310 311
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
312

313 314
config ARCH_IXP4XX
	bool "IXP4xx-based"
315
	depends on MMU
316
	select GENERIC_GPIO
317 318
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
319
	help
320
	  Support for Intel's IXP4XX (XScale) family of processors.
321

Linus Torvalds's avatar
Linus Torvalds committed
322 323 324 325 326 327 328 329 330 331 332 333 334
config ARCH_L7200
	bool "LinkUp-L7200"
	select FIQ
	help
	  Say Y here if you intend to run this kernel on a LinkUp Systems
	  L7200 Software Development Board which uses an ARM720T processor.
	  Information on this board can be obtained at:

	  <http://www.linkupsys.com/>

	  If you have any questions or comments about the Linux kernel port
	  to this board, send e-mail to <sjhill@cotw.com>.

335 336
config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
337
	select GENERIC_GPIO
338 339 340 341
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

342 343
config ARCH_NS9XXX
	bool "NetSilicon NS9xxx"
344
	select GENERIC_GPIO
345
	select GENERIC_TIME
346
	select GENERIC_CLOCKEVENTS
347 348 349 350 351 352
	help
	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
	  System.

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

353 354 355 356 357 358
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select ARCH_MTD_XIP
	help
	  Support for Freescale MXC/iMX-based family of processors

359 360 361
config ARCH_ORION
	bool "Marvell Orion"
	depends on MMU
Tzachi Perelstein's avatar
Tzachi Perelstein committed
362
	select PCI
Tzachi Perelstein's avatar
Tzachi Perelstein committed
363
	select GENERIC_GPIO
364 365
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
366 367 368
	help
	  Support for Marvell Orion System on Chip family.

369 370 371 372 373
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
	help
	  This enables support for Philips PNX4008 mobile platform.

Linus Torvalds's avatar
Linus Torvalds committed
374
config ARCH_PXA
eric miao's avatar
eric miao committed
375
	bool "PXA2xx/PXA3xx-based"
376
	depends on MMU
377
	select ARCH_MTD_XIP
378
	select GENERIC_GPIO
379
	select GENERIC_TIME
380
	select GENERIC_CLOCKEVENTS
381
	select TICK_ONESHOT
382
	help
eric miao's avatar
eric miao committed
383
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds's avatar
Linus Torvalds committed
384 385 386 387 388 389

config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
390
	select ARCH_MAY_HAVE_PC_FDC
391
	select ISA_DMA_API
Al Viro's avatar
Al Viro committed
392
	select NO_IOPORT
Linus Torvalds's avatar
Linus Torvalds committed
393 394 395 396 397 398
	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"
399
	select ISA
Russell King's avatar
Russell King committed
400
	select ARCH_DISCONTIGMEM_ENABLE
401
	select ARCH_MTD_XIP
402
	select GENERIC_GPIO
403
	select GENERIC_TIME
404 405
	help
	  Support for StrongARM 11x0 based boards.
Linus Torvalds's avatar
Linus Torvalds committed
406 407

config ARCH_S3C2410
408
	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
409
	select GENERIC_GPIO
Linus Torvalds's avatar
Linus Torvalds committed
410 411 412
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
413
	  the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds's avatar
Linus Torvalds committed
414 415 416

config ARCH_SHARK
	bool "Shark"
417 418 419
	select ISA
	select ISA_DMA
	select PCI
420 421 422
	help
	  Support for the StrongARM based Digital DNARD machine, also known
	  as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds's avatar
Linus Torvalds committed
423 424 425 426 427 428 429 430 431

config ARCH_LH7A40X
	bool "Sharp LH7A40X"
	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.

432 433 434 435
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
436
	select GENERIC_GPIO
437 438 439
	help
	  Support for TI's DaVinci platform.

440 441 442 443 444 445 446
config ARCH_OMAP
	bool "TI OMAP"
	select GENERIC_GPIO
	select GENERIC_TIME
	help
	  Support for TI's OMAP platform (OMAP1 and OMAP2).

447 448 449 450 451 452 453 454 455 456 457
config ARCH_MSM7X00A
	bool "Qualcomm MSM7X00A"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	help
	  Support for Qualcomm MSM7X00A based systems.  This runs on the ARM11
	  apps processor of the MSM7X00A and depends on a shared memory
	  interface to the ARM9 modem processor which runs the baseband stack
	  and controls some vital subsystems (clock and power control, etc).
	  <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>

Linus Torvalds's avatar
Linus Torvalds committed
458 459 460 461
endchoice

source "arch/arm/mach-clps711x/Kconfig"

462 463
source "arch/arm/mach-ep93xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
464 465 466 467
source "arch/arm/mach-footbridge/Kconfig"

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

468 469 470
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
471

472 473
source "arch/arm/mach-iop13xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
474 475 476 477
source "arch/arm/mach-ixp4xx/Kconfig"

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

478 479
source "arch/arm/mach-ixp23xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
480 481 482 483
source "arch/arm/mach-pxa/Kconfig"

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

484 485 486
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
487

488 489
source "arch/arm/mach-omap2/Kconfig"

490 491
source "arch/arm/mach-orion/Kconfig"

492
source "arch/arm/plat-s3c24xx/Kconfig"
493
source "arch/arm/plat-s3c/Kconfig"
494 495 496

if ARCH_S3C2410
source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
497
source "arch/arm/mach-s3c2410/Kconfig"
498 499 500
source "arch/arm/mach-s3c2412/Kconfig"
source "arch/arm/mach-s3c2440/Kconfig"
source "arch/arm/mach-s3c2442/Kconfig"
501
source "arch/arm/mach-s3c2443/Kconfig"
502
endif
Linus Torvalds's avatar
Linus Torvalds committed
503 504 505 506 507 508 509 510 511

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

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

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

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

512 513
source "arch/arm/mach-aaec2000/Kconfig"

514 515
source "arch/arm/mach-realview/Kconfig"

516
source "arch/arm/mach-at91/Kconfig"
517

518 519
source "arch/arm/plat-mxc/Kconfig"

520 521
source "arch/arm/mach-netx/Kconfig"

522 523
source "arch/arm/mach-ns9xxx/Kconfig"

524 525
source "arch/arm/mach-davinci/Kconfig"

526 527
source "arch/arm/mach-ks8695/Kconfig"

528 529
source "arch/arm/mach-msm/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
530 531 532 533
# Definitions to make life easier
config ARCH_ACORN
	bool

534 535 536
config PLAT_IOP
	bool

Linus Torvalds's avatar
Linus Torvalds committed
537 538
source arch/arm/mm/Kconfig

539 540
config IWMMXT
	bool "Enable iWMMXt support"
541
	depends on CPU_XSCALE || CPU_XSC3
eric miao's avatar
eric miao committed
542
	default y if PXA27x || PXA3xx
543 544 545 546
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

Linus Torvalds's avatar
Linus Torvalds committed
547 548 549 550 551 552
#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
	bool
	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
	default y

553 554 555 556
if !MMU
source "arch/arm/Kconfig-nommu"
endif

Linus Torvalds's avatar
Linus Torvalds committed
557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579
endmenu

source "arch/arm/common/Kconfig"

config FORCE_MAX_ZONEORDER
	int
	depends on SA1111
	default "9"

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.

580
# Select ISA DMA controller support
Linus Torvalds's avatar
Linus Torvalds committed
581 582
config ISA_DMA
	bool
583
	select ISA_DMA_API
Linus Torvalds's avatar
Linus Torvalds committed
584

585
# Select ISA DMA interface
586 587 588
config ISA_DMA_API
	bool

Linus Torvalds's avatar
Linus Torvalds committed
589
config PCI
Mike Rapoport's avatar
Mike Rapoport committed
590
	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
Linus Torvalds's avatar
Linus Torvalds committed
591 592 593 594 595 596
	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.

597 598 599
config PCI_SYSCALL
	def_bool PCI

Linus Torvalds's avatar
Linus Torvalds committed
600 601 602 603 604 605
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

Mike Rapoport's avatar
Mike Rapoport committed
606 607 608 609 610 611
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

Linus Torvalds's avatar
Linus Torvalds committed
612 613 614 615 616 617 618 619
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

620 621
source "kernel/time/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
622 623
config SMP
	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
624
	depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds's avatar
Linus Torvalds committed
625 626 627 628 629 630 631 632 633 634 635
	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.

636 637
	  See also the <file:Documentation/smp.txt>,
	  <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds's avatar
Linus Torvalds committed
638 639 640 641 642 643 644 645 646 647 648
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	  <http://www.linuxdoc.org/docs.html#howto>.

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

config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

649 650 651 652 653 654 655
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.

656 657
config LOCAL_TIMERS
	bool "Use local timer interrupts"
658
	depends on SMP && REALVIEW_MPCORE
659 660 661 662 663 664 665
	default y
	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.

Linus Torvalds's avatar
Linus Torvalds committed
666 667 668 669 670 671 672 673 674 675 676 677 678
config PREEMPT
	bool "Preemptible Kernel (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	help
	  This option reduces the latency of the kernel when reacting to
	  real-time or interactive events by allowing a low priority process to
	  be preempted even if it is in kernel mode executing a system call.
	  This allows applications to run more reliably even when the system is
	  under load.

	  Say Y here if you are building a kernel for a desktop, embedded
	  or real-time system.  Say N if you are unsure.

679 680
config NO_IDLE_HZ
	bool "Dynamic tick timer"
681
	depends on !GENERIC_CLOCKEVENTS
682 683 684 685 686 687 688 689 690 691 692 693 694
	help
	  Select this option if you want to disable continuous timer ticks
	  and have them programmed to occur as required. This option saves
	  power as the system can remain in idle state for longer.

	  By default dynamic tick is disabled during the boot, and can be
	  manually enabled with:

	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick

	  Alternatively, if you want dynamic tick automatically enabled
	  during boot, pass "dyntick=enable" via the kernel command string.

695 696
	  Please note that dynamic tick may affect the accuracy of
	  timekeeping on some platforms depending on the implementation.
697 698
	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
	  to have accurate timekeeping with dynamic tick.
699

700 701 702 703
config HZ
	int
	default 128 if ARCH_L7200
	default 200 if ARCH_EBSA110 || ARCH_S3C2410
704
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
705
	default AT91_TIMER_HZ if ARCH_AT91
706 707
	default 100

708 709 710 711 712 713 714 715 716 717 718 719 720 721 722
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.

723
config OABI_COMPAT
724
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
725
	depends on AEABI && EXPERIMENTAL
726 727 728 729 730 731 732 733 734 735 736 737 738 739
	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.

740
config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds's avatar
Linus Torvalds committed
741
	bool
742
	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds's avatar
Linus Torvalds committed
743 744 745 746 747 748
	help
	  Say Y to support efficient handling of discontiguous physical memory,
	  for architectures which are either NUMA (Non-Uniform Memory Access)
	  or have huge holes in the physical address space for other reasons.
	  See <file:Documentation/vm/numa> for more.

749 750 751 752 753 754
config NODES_SHIFT
	int
	default "4" if ARCH_LH7A40X
	default "2"
	depends on NEED_MULTIPLE_NODES

755 756
source "mm/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
757 758 759 760 761 762
config LEDS
	bool "Timer and CPU usage LEDs"
	depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
		   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
763
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
764
		   ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
765
		   ARCH_KS8695 || MACH_RD88F5182
Linus Torvalds's avatar
Linus Torvalds committed
766 767 768 769 770 771 772 773 774 775 776 777 778
	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) || \
David Brownell's avatar
David Brownell committed
779 780
			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			    || MACH_OMAP_PERSEUS2
Linus Torvalds's avatar
Linus Torvalds committed
781
	depends on LEDS
782
	depends on !GENERIC_CLOCKEVENTS
Linus Torvalds's avatar
Linus Torvalds committed
783 784 785 786 787 788 789 790 791 792 793 794 795 796
	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 && \
David Brownell's avatar
David Brownell committed
797 798 799
			!ARCH_OMAP) \
			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			|| MACH_OMAP_PERSEUS2
Linus Torvalds's avatar
Linus Torvalds committed
800 801 802 803 804 805 806 807 808 809 810 811
	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
812
	depends on CPU_CP15_MMU
Linus Torvalds's avatar
Linus Torvalds committed
813 814
	default y if !ARCH_EBSA110
	help
815
	  ARM processors cannot fetch/store information which is not
Linus Torvalds's avatar
Linus Torvalds committed
816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843
	  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.

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
844 845 846 847 848 849
	  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.
Linus Torvalds's avatar
Linus Torvalds committed
850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899

	  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).

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.

900 901 902 903 904 905
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
Matt LaPlante's avatar
Matt LaPlante committed
906
	  but it is independent of the system firmware.   And like a reboot
907 908 909 910 911 912 913
	  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.

Linus Torvalds's avatar
Linus Torvalds committed
914 915
endmenu

Russell King's avatar
Russell King committed
916
if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
Linus Torvalds's avatar
Linus Torvalds committed
917 918 919 920 921 922 923

menu "CPU Frequency scaling"

source "drivers/cpufreq/Kconfig"

config CPU_FREQ_SA1100
	bool
924
	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
Linus Torvalds's avatar
Linus Torvalds committed
925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942
	default y

config CPU_FREQ_SA1110
	bool
	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
	default y

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.

943 944 945 946 947 948 949 950 951
config CPU_FREQ_IMX
	tristate "CPUfreq driver for i.MX CPUs"
	depends on ARCH_IMX && CPU_FREQ
	default n
	help
	  This enables the CPUfreq driver for i.MX CPUs.

	  If in doubt, say N.

Russell King's avatar
Russell King committed
952 953 954 955 956 957
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

Linus Torvalds's avatar
Linus Torvalds committed
958 959 960 961 962 963 964 965 966 967
endmenu

endif

menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
968
	depends on !AEABI || OABI_COMPAT
Linus Torvalds's avatar
Linus Torvalds committed
969 970 971 972 973 974 975 976 977 978 979
	---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"
980
	depends on FPE_NWFPE
Linus Torvalds's avatar
Linus Torvalds committed
981 982 983 984 985 986 987 988 989 990 991
	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)"
992
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds's avatar
Linus Torvalds committed
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005
	---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"
Russell King's avatar
Russell King committed
1006
	depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
Linus Torvalds's avatar
Linus Torvalds committed
1007 1008 1009 1010 1011 1012 1013 1014 1015
	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.

1016 1017 1018 1019 1020
config VFPv3
	bool
	depends on VFP
	default y if CPU_V7

1021 1022 1023 1024 1025 1026 1027
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.

Linus Torvalds's avatar
Linus Torvalds committed
1028 1029 1030 1031 1032 1033 1034 1035
endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
1036
	depends on !AEABI
Linus Torvalds's avatar
Linus Torvalds committed
1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
	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"

Russell King's avatar
Russell King committed
1048
source "kernel/power/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
1049

Johannes Berg's avatar
Johannes Berg committed
1050 1051 1052
config ARCH_SUSPEND_POSSIBLE
	def_bool y

Linus Torvalds's avatar
Linus Torvalds committed
1053 1054
endmenu

1055 1056
source "net/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1057 1058 1059 1060
menu "Device Drivers"

source "drivers/base/Kconfig"

Pavel Machek's avatar
Pavel Machek committed
1061 1062
source "drivers/connector/Kconfig"

1063
if ALIGNMENT_TRAP || !CPU_CP15_MMU
Linus Torvalds's avatar
Linus Torvalds committed
1064 1065 1066 1067 1068 1069 1070 1071 1072
source "drivers/mtd/Kconfig"
endif

source "drivers/parport/Kconfig"

source "drivers/pnp/Kconfig"

source "drivers/block/Kconfig"

1073 1074 1075 1076
# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4

source "drivers/misc/Kconfig"

1077
if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
1078
	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
1079 1080
	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
	|| ARCH_IXP23XX
Linus Torvalds's avatar
Linus Torvalds committed
1081 1082 1083 1084 1085
source "drivers/ide/Kconfig"
endif

source "drivers/scsi/Kconfig"

1086 1087
source "drivers/ata/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1088 1089 1090 1091 1092 1093 1094 1095
source "drivers/md/Kconfig"

source "drivers/message/fusion/Kconfig"

source "drivers/ieee1394/Kconfig"

source "drivers/message/i2o/Kconfig"

1096
source "drivers/net/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107

source "drivers/isdn/Kconfig"

# input before char - char/joystick depends on it. As does USB.

source "drivers/input/Kconfig"

source "drivers/char/Kconfig"

source "drivers/i2c/Kconfig"

1108 1109
source "drivers/spi/Kconfig"

1110 1111
source "drivers/w1/Kconfig"

1112 1113
source "drivers/power/Kconfig"

1114 1115
source "drivers/hwmon/Kconfig"

1116 1117
source "drivers/watchdog/Kconfig"

1118
source "drivers/ssb/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
1119

1120
#source "drivers/l3/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
1121

1122 1123
source "drivers/mfd/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1124 1125 1126 1127 1128 1129
source "drivers/media/Kconfig"

source "drivers/video/Kconfig"

source "sound/Kconfig"

1130 1131
source "drivers/hid/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1132 1133 1134 1135
source "drivers/usb/Kconfig"

source "drivers/mmc/Kconfig"

1136 1137
source "drivers/leds/Kconfig"

1138 1139
source "drivers/rtc/Kconfig"

1140 1141
source "drivers/dma/Kconfig"

1142 1143
source "drivers/dca/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1144 1145 1146 1147
endmenu

source "fs/Kconfig"

1148
source "kernel/Kconfig.instrumentation"
Linus Torvalds's avatar
Linus Torvalds committed
1149 1150 1151 1152 1153 1154 1155 1156

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"