Kconfig 27.5 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

Linus Torvalds's avatar
Linus Torvalds committed
94 95 96 97 98 99 100
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

101 102 103 104 105 106 107 108
config ARCH_HAS_ILOG2_U32
	bool
	default n

config ARCH_HAS_ILOG2_U64
	bool
	default n

109 110 111 112
config GENERIC_HWEIGHT
	bool
	default y

Linus Torvalds's avatar
Linus Torvalds committed
113 114 115 116
config GENERIC_CALIBRATE_DELAY
	bool
	default y

117 118 119
config ARCH_MAY_HAVE_PC_FDC
	bool

120 121 122 123
config ZONE_DMA
	bool
	default y

Linus Torvalds's avatar
Linus Torvalds committed
124 125 126 127 128 129
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

130 131 132
config ARCH_MTD_XIP
	bool

133 134
config VECTORS_BASE
	hex
135
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
136 137 138 139 140
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

Linus Torvalds's avatar
Linus Torvalds committed
141 142 143 144 145 146
source "init/Kconfig"

menu "System Type"

choice
	prompt "ARM system type"
147
	default ARCH_VERSATILE
Linus Torvalds's avatar
Linus Torvalds committed
148

149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173
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
174
	select GENERIC_TIME
175
	select GENERIC_CLOCKEVENTS
176 177 178
	help
	  This enables support for ARM Ltd Versatile board.

179 180
config ARCH_AT91
	bool "Atmel AT91"
181
	select GENERIC_GPIO
182
	help
183 184
	  This enables support for systems based on the Atmel AT91RM9200
	  and AT91SAM9xxx processors.
185

Linus Torvalds's avatar
Linus Torvalds committed
186
config ARCH_CLPS7500
187
	bool "Cirrus CL-PS7500FE"
Linus Torvalds's avatar
Linus Torvalds committed
188
	select TIMER_ACORN
189
	select ISA
190
	select NO_IOPORT
191 192
	help
	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds's avatar
Linus Torvalds committed
193 194

config ARCH_CLPS711X
195
	bool "Cirrus Logic CLPS711x/EP721x-based"
196 197
	help
	  Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds's avatar
Linus Torvalds committed
198 199 200 201 202

config ARCH_CO285
	bool "Co-EBSA285"
	select FOOTBRIDGE
	select FOOTBRIDGE_ADDIN
203 204
	help
	  Support for Intel's EBSA285 companion chip.
Linus Torvalds's avatar
Linus Torvalds committed
205 206 207

config ARCH_EBSA110
	bool "EBSA-110"
208
	select ISA
209
	select NO_IOPORT
Linus Torvalds's avatar
Linus Torvalds committed
210 211
	help
	  This is an evaluation board for the StrongARM processor available
212
	  from Digital. It has limited hardware on-board, including an
Linus Torvalds's avatar
Linus Torvalds committed
213 214 215
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

216 217 218 219 220 221 222
config ARCH_EP93XX
	bool "EP93xx-based"
	select ARM_AMBA
	select ARM_VIC
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

Linus Torvalds's avatar
Linus Torvalds committed
223 224 225
config ARCH_FOOTBRIDGE
	bool "FootBridge"
	select FOOTBRIDGE
226 227 228
	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
229

230 231 232
config ARCH_NETX
	bool "Hilscher NetX based"
	select ARM_VIC
233
	help
234 235 236 237 238 239 240 241 242 243
	  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"
244
	select GENERIC_GPIO
245 246
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
247 248
	help
	  Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds's avatar
Linus Torvalds committed
249

250 251 252 253 254 255 256 257 258
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.

259 260
config ARCH_IOP32X
	bool "IOP32x-based"
261
	depends on MMU
262
	select PLAT_IOP
263
	select PCI
264
	help
265 266 267 268 269 270
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
271
	select PLAT_IOP
272 273 274
	select PCI
	help
	  Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
275

276 277
config ARCH_IXP23XX
 	bool "IXP23XX-based"
278
	depends on MMU
279
 	select PCI
280
	help
281
	  Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
282 283 284

config ARCH_IXP2000
	bool "IXP2400/2800-based"
285
	depends on MMU
286
	select PCI
287 288
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
289

290 291
config ARCH_IXP4XX
	bool "IXP4xx-based"
292
	depends on MMU
293
	select GENERIC_GPIO
294 295
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
296
	help
297
	  Support for Intel's IXP4XX (XScale) family of processors.
298

Linus Torvalds's avatar
Linus Torvalds committed
299 300 301 302 303 304 305 306 307 308 309 310 311
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>.

312 313
config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
314
	select GENERIC_GPIO
315 316 317 318
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

319 320 321 322 323 324 325 326
config ARCH_NS9XXX
	bool "NetSilicon NS9xxx"
	help
	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
	  System.

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

327 328 329 330 331 332
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select ARCH_MTD_XIP
	help
	  Support for Freescale MXC/iMX-based family of processors

333 334 335 336 337
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
	help
	  This enables support for Philips PNX4008 mobile platform.

Linus Torvalds's avatar
Linus Torvalds committed
338 339
config ARCH_PXA
	bool "PXA2xx-based"
340
	depends on MMU
341
	select ARCH_MTD_XIP
342
	select GENERIC_GPIO
343
	select GENERIC_TIME
344 345
	help
	  Support for Intel's PXA2XX processor line.
Linus Torvalds's avatar
Linus Torvalds committed
346 347 348 349 350 351

config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
352
	select ARCH_MAY_HAVE_PC_FDC
353
	select ISA_DMA_API
Al Viro's avatar
Al Viro committed
354
	select NO_IOPORT
Linus Torvalds's avatar
Linus Torvalds committed
355 356 357 358 359 360
	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"
361
	select ISA
Russell King's avatar
Russell King committed
362
	select ARCH_DISCONTIGMEM_ENABLE
363
	select ARCH_MTD_XIP
364
	select GENERIC_GPIO
365 366
	help
	  Support for StrongARM 11x0 based boards.
Linus Torvalds's avatar
Linus Torvalds committed
367 368

config ARCH_S3C2410
369
	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
370
	select GENERIC_GPIO
Linus Torvalds's avatar
Linus Torvalds committed
371 372 373
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
374
	  the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds's avatar
Linus Torvalds committed
375 376 377

config ARCH_SHARK
	bool "Shark"
378 379 380
	select ISA
	select ISA_DMA
	select PCI
381 382 383
	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
384 385 386 387 388 389 390 391 392

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.

393 394 395 396
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
397
	select GENERIC_GPIO
398 399 400
	help
	  Support for TI's DaVinci platform.

401 402 403 404 405 406 407
config ARCH_OMAP
	bool "TI OMAP"
	select GENERIC_GPIO
	select GENERIC_TIME
	help
	  Support for TI's OMAP platform (OMAP1 and OMAP2).

Linus Torvalds's avatar
Linus Torvalds committed
408 409 410 411
endchoice

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

412 413
source "arch/arm/mach-ep93xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
414 415 416 417
source "arch/arm/mach-footbridge/Kconfig"

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

418 419 420
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
421

422 423
source "arch/arm/mach-iop13xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
424 425 426 427
source "arch/arm/mach-ixp4xx/Kconfig"

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

428 429
source "arch/arm/mach-ixp23xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
430 431 432 433
source "arch/arm/mach-pxa/Kconfig"

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

434 435 436
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
437

438 439
source "arch/arm/mach-omap2/Kconfig"

440
source "arch/arm/plat-s3c24xx/Kconfig"
441
source "arch/arm/plat-s3c/Kconfig"
442 443 444

if ARCH_S3C2410
source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
445
source "arch/arm/mach-s3c2410/Kconfig"
446 447 448
source "arch/arm/mach-s3c2412/Kconfig"
source "arch/arm/mach-s3c2440/Kconfig"
source "arch/arm/mach-s3c2442/Kconfig"
449
source "arch/arm/mach-s3c2443/Kconfig"
450
endif
Linus Torvalds's avatar
Linus Torvalds committed
451 452 453 454 455 456 457 458 459

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

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

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

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

460 461
source "arch/arm/mach-aaec2000/Kconfig"

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

464
source "arch/arm/mach-at91/Kconfig"
465

466 467
source "arch/arm/plat-mxc/Kconfig"

468 469
source "arch/arm/mach-netx/Kconfig"

470 471
source "arch/arm/mach-ns9xxx/Kconfig"

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

474 475
source "arch/arm/mach-ks8695/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
476 477 478 479
# Definitions to make life easier
config ARCH_ACORN
	bool

480 481 482
config PLAT_IOP
	bool

Linus Torvalds's avatar
Linus Torvalds committed
483 484
source arch/arm/mm/Kconfig

485 486
config IWMMXT
	bool "Enable iWMMXt support"
487
	depends on CPU_XSCALE || CPU_XSC3
488 489 490 491 492
	default y if PXA27x
	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
493 494 495 496 497 498
#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
	bool
	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
	default y

499 500 501 502
if !MMU
source "arch/arm/Kconfig-nommu"
endif

Linus Torvalds's avatar
Linus Torvalds committed
503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525
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.

526
# Select ISA DMA controller support
Linus Torvalds's avatar
Linus Torvalds committed
527 528
config ISA_DMA
	bool
529
	select ISA_DMA_API
Linus Torvalds's avatar
Linus Torvalds committed
530

531
# Select ISA DMA interface
532 533 534
config ISA_DMA_API
	bool

Linus Torvalds's avatar
Linus Torvalds committed
535
config PCI
536
	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695
Linus Torvalds's avatar
Linus Torvalds committed
537 538 539 540 541 542 543 544 545 546 547
	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.

	  The PCI-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>, contains valuable
	  information about which PCI hardware does work under Linux and which
	  doesn't.

548 549 550
config PCI_SYSCALL
	def_bool PCI

Linus Torvalds's avatar
Linus Torvalds committed
551 552 553 554 555 556 557 558 559 560 561 562 563 564
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

565 566
source "kernel/time/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
567 568
config SMP
	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
569
	depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds's avatar
Linus Torvalds committed
570 571 572 573 574 575 576 577 578 579 580
	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.

581 582
	  See also the <file:Documentation/smp.txt>,
	  <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds's avatar
Linus Torvalds committed
583 584 585 586 587 588 589 590 591 592 593
	  <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"

594 595 596 597 598 599 600
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.

601 602
config LOCAL_TIMERS
	bool "Use local timer interrupts"
603
	depends on SMP && REALVIEW_MPCORE
604 605 606 607 608 609 610
	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
611 612 613 614 615 616 617 618 619 620 621 622 623
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.

624 625
config NO_IDLE_HZ
	bool "Dynamic tick timer"
626
	depends on !GENERIC_CLOCKEVENTS
627 628 629 630 631 632 633 634 635 636 637 638 639
	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.

640 641
	  Please note that dynamic tick may affect the accuracy of
	  timekeeping on some platforms depending on the implementation.
642 643
	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
	  to have accurate timekeeping with dynamic tick.
644

645 646 647 648
config HZ
	int
	default 128 if ARCH_L7200
	default 200 if ARCH_EBSA110 || ARCH_S3C2410
649
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
650 651
	default 100

652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
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.

667
config OABI_COMPAT
668
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
669
	depends on AEABI && EXPERIMENTAL
670 671 672 673 674 675 676 677 678 679 680 681 682 683
	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.

684
config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds's avatar
Linus Torvalds committed
685
	bool
686
	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds's avatar
Linus Torvalds committed
687 688 689 690 691 692
	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.

693 694 695 696 697 698
config NODES_SHIFT
	int
	default "4" if ARCH_LH7A40X
	default "2"
	depends on NEED_MULTIPLE_NODES

699 700
source "mm/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
701 702 703 704 705 706
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 || \
707
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
708 709
		   ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
		   ARCH_KS8695
Linus Torvalds's avatar
Linus Torvalds committed
710 711 712 713 714 715 716 717 718 719 720 721 722 723 724
	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) || \
			    MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
	depends on LEDS
725
	depends on !GENERIC_CLOCKEVENTS
Linus Torvalds's avatar
Linus Torvalds committed
726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752
	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 && \
			!ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
	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
753
	depends on CPU_CP15_MMU
Linus Torvalds's avatar
Linus Torvalds committed
754 755
	default y if !ARCH_EBSA110
	help
756
	  ARM processors cannot fetch/store information which is not
Linus Torvalds's avatar
Linus Torvalds committed
757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784
	  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
785 786 787 788 789 790
	  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
791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840

	  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.

841 842 843 844 845 846 847 848 849 850 851 852 853 854
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
	  but it is indepedent of the system firmware.   And like a reboot
	  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
855 856
endmenu

857
if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
Linus Torvalds's avatar
Linus Torvalds committed
858 859 860 861 862 863 864

menu "CPU Frequency scaling"

source "drivers/cpufreq/Kconfig"

config CPU_FREQ_SA1100
	bool
865
	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
866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883
	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.

884 885 886 887 888 889 890 891 892
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.

Linus Torvalds's avatar
Linus Torvalds committed
893 894 895 896 897 898 899 900 901 902
endmenu

endif

menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
903
	depends on !AEABI || OABI_COMPAT
Linus Torvalds's avatar
Linus Torvalds committed
904 905 906 907 908 909 910 911 912 913 914
	---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"
915
	depends on FPE_NWFPE
Linus Torvalds's avatar
Linus Torvalds committed
916 917 918 919 920 921 922 923 924 925 926
	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)"
927
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds's avatar
Linus Torvalds committed
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958
	---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"
	depends on CPU_V6 || CPU_ARM926T
	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.

endmenu

menu "Userspace binary formats"

source "fs/Kconfig.binfmt"

config ARTHUR
	tristate "RISC OS personality"
959
	depends on !AEABI
Linus Torvalds's avatar
Linus Torvalds committed
960 961 962 963 964 965 966 967 968 969 970
	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
971
source "kernel/power/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
972 973 974

endmenu

975 976
source "net/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
977 978 979 980
menu "Device Drivers"

source "drivers/base/Kconfig"

Pavel Machek's avatar
Pavel Machek committed
981 982
source "drivers/connector/Kconfig"

983
if ALIGNMENT_TRAP || !CPU_CP15_MMU
Linus Torvalds's avatar
Linus Torvalds committed
984 985 986 987 988 989 990 991 992 993 994
source "drivers/mtd/Kconfig"
endif

source "drivers/parport/Kconfig"

source "drivers/pnp/Kconfig"

source "drivers/block/Kconfig"

source "drivers/acorn/block/Kconfig"

995
if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
996
	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
997 998
	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
	|| ARCH_IXP23XX
Linus Torvalds's avatar
Linus Torvalds committed
999 1000 1001 1002 1003
source "drivers/ide/Kconfig"
endif

source "drivers/scsi/Kconfig"

1004 1005
source "drivers/ata/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1006 1007 1008 1009 1010 1011 1012 1013
source "drivers/md/Kconfig"

source "drivers/message/fusion/Kconfig"

source "drivers/ieee1394/Kconfig"

source "drivers/message/i2o/Kconfig"

1014
source "drivers/net/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025

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"

1026 1027
source "drivers/spi/Kconfig"

1028 1029
source "drivers/w1/Kconfig"

1030 1031
source "drivers/hwmon/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1032 1033 1034 1035
#source "drivers/l3/Kconfig"

source "drivers/misc/Kconfig"

1036 1037
source "drivers/mfd/Kconfig"

Richard Purdie's avatar
Richard Purdie committed
1038 1039
source "drivers/leds/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1040 1041 1042 1043 1044 1045
source "drivers/media/Kconfig"

source "drivers/video/Kconfig"

source "sound/Kconfig"

1046 1047
source "drivers/hid/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1048 1049 1050 1051
source "drivers/usb/Kconfig"

source "drivers/mmc/Kconfig"

1052 1053
source "drivers/rtc/Kconfig"

1054 1055
source "drivers/dma/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
endmenu

source "fs/Kconfig"

source "arch/arm/oprofile/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"