Kconfig 23.8 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1 2 3 4 5 6 7 8 9 10 11 12
#
# 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
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
13
	  licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds's avatar
Linus Torvalds committed
14
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
15
	  manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds's avatar
Linus Torvalds committed
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

config MMU
	bool
	default y

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.

config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

56 57 58 59
config GENERIC_HWEIGHT
	bool
	default y

Linus Torvalds's avatar
Linus Torvalds committed
60 61 62 63 64 65 66
config GENERIC_CALIBRATE_DELAY
	bool
	default y

config GENERIC_BUST_SPINLOCK
	bool

67 68 69
config ARCH_MAY_HAVE_PC_FDC
	bool

Linus Torvalds's avatar
Linus Torvalds committed
70 71 72 73 74 75
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

76 77 78
config ARCH_MTD_XIP
	bool

Linus Torvalds's avatar
Linus Torvalds committed
79 80 81 82 83 84
source "init/Kconfig"

menu "System Type"

choice
	prompt "ARM system type"
85
	default ARCH_VERSATILE
Linus Torvalds's avatar
Linus Torvalds committed
86 87 88 89

config ARCH_CLPS7500
	bool "Cirrus-CL-PS7500FE"
	select TIMER_ACORN
90
	select ISA
91 92
	help
	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds's avatar
Linus Torvalds committed
93 94 95

config ARCH_CLPS711X
	bool "CLPS711x/EP721x-based"
96 97
	help
	  Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds's avatar
Linus Torvalds committed
98 99 100 101 102

config ARCH_CO285
	bool "Co-EBSA285"
	select FOOTBRIDGE
	select FOOTBRIDGE_ADDIN
103 104
	help
	  Support for Intel's EBSA285 companion chip.
Linus Torvalds's avatar
Linus Torvalds committed
105 106 107

config ARCH_EBSA110
	bool "EBSA-110"
108
	select ISA
Linus Torvalds's avatar
Linus Torvalds committed
109 110
	help
	  This is an evaluation board for the StrongARM processor available
111
	  from Digital. It has limited hardware on-board, including an
Linus Torvalds's avatar
Linus Torvalds committed
112 113 114
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

115 116 117 118 119 120 121
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
122 123 124
config ARCH_FOOTBRIDGE
	bool "FootBridge"
	select FOOTBRIDGE
125 126 127
	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
128 129 130 131 132

config ARCH_INTEGRATOR
	bool "Integrator"
	select ARM_AMBA
	select ICST525
133 134
	help
	  Support for ARM's Integrator platform.
Linus Torvalds's avatar
Linus Torvalds committed
135 136 137

config ARCH_IOP3XX
	bool "IOP3xx-based"
138
	select PCI
139 140
	help
	  Support for Intel's IOP3XX (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
141 142 143 144

config ARCH_IXP4XX
	bool "IXP4xx-based"
	select DMABOUNCE
145
	select PCI
146 147
	help
	  Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
148 149 150

config ARCH_IXP2000
	bool "IXP2400/2800-based"
151
	select PCI
152 153
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169

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>.

config ARCH_PXA
	bool "PXA2xx-based"
170
	select ARCH_MTD_XIP
171 172
	help
	  Support for Intel's PXA2XX processor line.
Linus Torvalds's avatar
Linus Torvalds committed
173 174 175 176 177 178

config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
179
	select ARCH_MAY_HAVE_PC_FDC
180
	select ISA_DMA_API
Linus Torvalds's avatar
Linus Torvalds committed
181 182 183 184 185 186
	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"
187
	select ISA
Russell King's avatar
Russell King committed
188
	select ARCH_DISCONTIGMEM_ENABLE
189
	select ARCH_MTD_XIP
190 191
	help
	  Support for StrongARM 11x0 based boards.
Linus Torvalds's avatar
Linus Torvalds committed
192 193 194 195 196 197

config ARCH_S3C2410
	bool "Samsung S3C2410"
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
198
	  the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds's avatar
Linus Torvalds committed
199 200 201

config ARCH_SHARK
	bool "Shark"
202 203 204
	select ISA
	select ISA_DMA
	select PCI
205 206 207
	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
208 209 210 211 212 213 214 215 216 217 218

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.

config ARCH_OMAP
	bool "TI OMAP"
219 220
	help
	  Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds's avatar
Linus Torvalds committed
221 222 223 224

config ARCH_VERSATILE
	bool "Versatile"
	select ARM_AMBA
225
	select ARM_VIC
Linus Torvalds's avatar
Linus Torvalds committed
226 227 228 229
	select ICST307
	help
	  This enables support for ARM Ltd Versatile board.

230 231 232 233 234 235 236
config ARCH_REALVIEW
	bool "RealView"
	select ARM_AMBA
	select ICST307
	help
	  This enables support for ARM Ltd RealView boards.

Linus Torvalds's avatar
Linus Torvalds committed
237 238
config ARCH_IMX
	bool "IMX"
239 240
	help
	  Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds's avatar
Linus Torvalds committed
241 242 243

config ARCH_H720X
	bool "Hynix-HMS720x-based"
244
	select ISA_DMA_API
Linus Torvalds's avatar
Linus Torvalds committed
245 246 247
	help
	  This enables support for systems based on the Hynix HMS720x

248 249
config ARCH_AAEC2000
	bool "Agilent AAEC-2000 based"
250
	select ARM_AMBA
251 252 253
	help
	  This enables support for systems based on the Agilent AAEC-2000

254 255 256
config ARCH_AT91RM9200
	bool "AT91RM9200"
	help
257 258
	  Say Y here if you intend to run this kernel on an Atmel
	  AT91RM9200-based board.
259

Linus Torvalds's avatar
Linus Torvalds committed
260 261 262 263
endchoice

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

264 265
source "arch/arm/mach-ep93xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
266 267 268 269 270 271 272 273 274 275 276 277 278 279
source "arch/arm/mach-footbridge/Kconfig"

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

source "arch/arm/mach-iop3xx/Kconfig"

source "arch/arm/mach-ixp4xx/Kconfig"

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

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

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

280 281 282
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
283

284 285
source "arch/arm/mach-omap2/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
286 287 288 289 290 291 292 293 294 295
source "arch/arm/mach-s3c2410/Kconfig"

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

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

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

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

296 297
source "arch/arm/mach-aaec2000/Kconfig"

298 299
source "arch/arm/mach-realview/Kconfig"

300 301
source "arch/arm/mach-at91rm9200/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336
# Definitions to make life easier
config ARCH_ACORN
	bool

source arch/arm/mm/Kconfig

#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
	bool
	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
	default y

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.

337
# Select ISA DMA controller support
Linus Torvalds's avatar
Linus Torvalds committed
338 339
config ISA_DMA
	bool
340
	select ISA_DMA_API
Linus Torvalds's avatar
Linus Torvalds committed
341

342
# Select ISA DMA interface
343 344 345
config ISA_DMA_API
	bool

Linus Torvalds's avatar
Linus Torvalds committed
346
config PCI
347
	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
Linus Torvalds's avatar
Linus Torvalds committed
348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374
	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.

# 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"

config SMP
	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
375
	depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds's avatar
Linus Torvalds committed
376 377 378 379 380 381 382 383 384 385 386
	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.

387 388
	  See also the <file:Documentation/smp.txt>,
	  <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds's avatar
Linus Torvalds committed
389 390 391 392 393 394 395 396 397 398 399
	  <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"

400 401 402 403 404 405 406
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.

407 408
config LOCAL_TIMERS
	bool "Use local timer interrupts"
409
	depends on SMP && REALVIEW_MPCORE
410 411 412 413 414 415 416
	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
417 418 419 420 421 422 423 424 425 426 427 428 429
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.

430 431 432 433 434 435 436 437 438 439 440 441 442 443 444
config NO_IDLE_HZ
	bool "Dynamic tick timer"
	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.

445 446
	  Please note that dynamic tick may affect the accuracy of
	  timekeeping on some platforms depending on the implementation.
447 448
	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
	  to have accurate timekeeping with dynamic tick.
449

450 451 452 453
config HZ
	int
	default 128 if ARCH_L7200
	default 200 if ARCH_EBSA110 || ARCH_S3C2410
454
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
455 456
	default 100

457 458 459 460 461 462 463 464 465 466 467 468 469 470 471
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.

472
config OABI_COMPAT
473
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
474
	depends on AEABI && EXPERIMENTAL
475 476 477 478 479 480 481 482 483 484 485 486 487 488
	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.

489
config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds's avatar
Linus Torvalds committed
490
	bool
491
	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds's avatar
Linus Torvalds committed
492 493 494 495 496 497
	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.

498 499
source "mm/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
500 501 502 503 504 505
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 || \
506 507
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
		   ARCH_AT91RM9200
Linus Torvalds's avatar
Linus Torvalds committed
508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637
	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
	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
	default y if !ARCH_EBSA110
	help
	  ARM processors can not fetch/store information which is not
	  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
	  The base address of 64KiB of read/write memory in the target
	  for the ROM-able zImage, which must be available while the
	  decompressor is running.  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
	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.

endmenu

638
if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
Linus Torvalds's avatar
Linus Torvalds committed
639 640 641 642 643 644 645

menu "CPU Frequency scaling"

source "drivers/cpufreq/Kconfig"

config CPU_FREQ_SA1100
	bool
646
	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
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674
	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.

endmenu

endif

menu "Floating point emulation"

comment "At least one emulation must be selected"

config FPE_NWFPE
	bool "NWFPE math emulation"
675
	depends on !AEABI || OABI_COMPAT
Linus Torvalds's avatar
Linus Torvalds committed
676 677 678 679 680 681 682 683 684 685 686
	---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"
687
	depends on FPE_NWFPE
Linus Torvalds's avatar
Linus Torvalds committed
688 689 690 691 692 693 694 695 696 697 698
	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)"
699
	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds's avatar
Linus Torvalds committed
700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730
	---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"
731
	depends on !AEABI
Linus Torvalds's avatar
Linus Torvalds committed
732 733 734 735 736 737 738 739 740 741 742
	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
743
source "kernel/power/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771

config APM
	tristate "Advanced Power Management Emulation"
	---help---
	  APM is a BIOS specification for saving power using several different
	  techniques. This is mostly useful for battery powered laptops with
	  APM compliant BIOSes. If you say Y here, the system time will be
	  reset after a RESUME operation, the /proc/apm device will provide
	  battery status information, and user-space programs will receive
	  notification of APM "events" (e.g. battery status change).

	  In order to use APM, you will need supporting software. For location
	  and more information, read <file:Documentation/pm.txt> and the
	  Battery Powered Linux mini-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>.

	  This driver does not spin down disk drives (see the hdparm(8)
	  manpage ("man 8 hdparm") for that), and it doesn't turn off
	  VESA-compliant "green" monitors.

	  Generally, if you don't have a battery in your machine, there isn't
	  much point in using this driver and you should say N. If you get
	  random kernel OOPSes or reboots that don't seem to be related to
	  anything, try disabling/enabling this option (or disabling/enabling
	  APM in your BIOS).

endmenu

772 773
source "net/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
774 775 776 777
menu "Device Drivers"

source "drivers/base/Kconfig"

Pavel Machek's avatar
Pavel Machek committed
778 779
source "drivers/connector/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
780 781 782 783 784 785 786 787 788 789 790 791
if ALIGNMENT_TRAP
source "drivers/mtd/Kconfig"
endif

source "drivers/parport/Kconfig"

source "drivers/pnp/Kconfig"

source "drivers/block/Kconfig"

source "drivers/acorn/block/Kconfig"

792 793
if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
794
	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
Linus Torvalds's avatar
Linus Torvalds committed
795 796 797 798 799 800 801 802 803 804 805 806 807
source "drivers/ide/Kconfig"
endif

source "drivers/scsi/Kconfig"

source "drivers/md/Kconfig"

source "drivers/message/fusion/Kconfig"

source "drivers/ieee1394/Kconfig"

source "drivers/message/i2o/Kconfig"

808
source "drivers/net/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
809 810 811 812 813 814 815 816 817 818 819

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"

820 821
source "drivers/spi/Kconfig"

822 823
source "drivers/w1/Kconfig"

824 825
source "drivers/hwmon/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
826 827 828 829
#source "drivers/l3/Kconfig"

source "drivers/misc/Kconfig"

830 831
source "drivers/mfd/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854
source "drivers/media/Kconfig"

source "drivers/video/Kconfig"

source "sound/Kconfig"

source "drivers/usb/Kconfig"

source "drivers/mmc/Kconfig"

endmenu

source "fs/Kconfig"

source "arch/arm/oprofile/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"