arch/arm/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux Kernel Configuration"
   7
   8 config ARM
   9         bool
  10         default y
  11         help
  12           The ARM series is a line of low-power-consumption RISC chip designs
  13           licensed by ARM ltd and targeted at embedded applications and
  14           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  15           manufactured, but  legacy ARM-based PC hardware remains popular in
  16           Europe.  There is an ARM Linux project with a web page at
  17           <http://www.arm.linux.org.uk/>.
  18
  19 config MMU
  20         bool
  21         default y
  22
  23 config EISA
  24         bool
  25         ---help---
  26           The Extended Industry Standard Architecture (EISA) bus was
  27           developed as an open alternative to the IBM MicroChannel bus.
  28
  29           The EISA bus provided some of the features of the IBM MicroChannel
  30           bus while maintaining backward compatibility with cards made for
  31           the older ISA bus.  The EISA bus saw limited use between 1988 and
  32           1995 when it was made obsolete by the PCI bus.
  33
  34           Say Y here if you are building a kernel for an EISA-based machine.
  35
  36           Otherwise, say N.
  37
  38 config SBUS
  39         bool
  40
  41 config MCA
  42         bool
  43         help
  44           MicroChannel Architecture is found in some IBM PS/2 machines and
  45           laptops.  It is a bus system similar to PCI or ISA. See
  46           <file:Documentation/mca.txt> (and especially the web page given
  47           there) before attempting to build an MCA bus kernel.
  48
  49 config UID16
  50         bool
  51         default y
  52
  53 config RWSEM_GENERIC_SPINLOCK
  54         bool
  55         default y
  56
  57 config RWSEM_XCHGADD_ALGORITHM
  58         bool
  59
  60 config GENERIC_CALIBRATE_DELAY
  61         bool
  62         default y
  63
  64 config GENERIC_BUST_SPINLOCK
  65         bool
  66
  67 config ARCH_MAY_HAVE_PC_FDC
  68         bool
  69
  70 config GENERIC_ISA_DMA
  71         bool
  72
  73 config FIQ
  74         bool
  75
  76 source "init/Kconfig"
  77
  78 menu "System Type"
  79
  80 choice
  81         prompt "ARM system type"
  82         default ARCH_RPC
  83
  84 config ARCH_CLPS7500
  85         bool "Cirrus-CL-PS7500FE"
  86         select TIMER_ACORN
  87         select ISA
  88
  89 config ARCH_CLPS711X
  90         bool "CLPS711x/EP721x-based"
  91
  92 config ARCH_CO285
  93         bool "Co-EBSA285"
  94         select FOOTBRIDGE
  95         select FOOTBRIDGE_ADDIN
  96
  97 config ARCH_EBSA110
  98         bool "EBSA-110"
  99         select ISA
 100         help
 101           This is an evaluation board for the StrongARM processor available
 102           from Digital. It has limited hardware on-board, including an onboard
 103           Ethernet interface, two PCMCIA sockets, two serial ports and a
 104           parallel port.
 105
 106 config ARCH_CAMELOT
 107         bool "Epxa10db"
 108         help
 109           This enables support for Altera's Excalibur XA10 development board.
 110           If you would like to build your kernel to run on one of these boards
 111           then you must say 'Y' here. Otherwise say 'N'
 112
 113 config ARCH_FOOTBRIDGE
 114         bool "FootBridge"
 115         select FOOTBRIDGE
 116
 117 config ARCH_INTEGRATOR
 118         bool "Integrator"
 119         select ARM_AMBA
 120         select ICST525
 121
 122 config ARCH_IOP3XX
 123         bool "IOP3xx-based"
 124         select PCI
 125
 126 config ARCH_IXP4XX
 127         bool "IXP4xx-based"
 128         select DMABOUNCE
 129         select PCI
 130
 131 config ARCH_IXP2000
 132         bool "IXP2400/2800-based"
 133         select PCI
 134
 135 config ARCH_L7200
 136         bool "LinkUp-L7200"
 137         select FIQ
 138         help
 139           Say Y here if you intend to run this kernel on a LinkUp Systems
 140           L7200 Software Development Board which uses an ARM720T processor.
 141           Information on this board can be obtained at:
 142
 143           <http://www.linkupsys.com/>
 144
 145           If you have any questions or comments about the Linux kernel port
 146           to this board, send e-mail to <sjhill@cotw.com>.
 147
 148 config ARCH_PXA
 149         bool "PXA2xx-based"
 150
 151 config ARCH_RPC
 152         bool "RiscPC"
 153         select ARCH_ACORN
 154         select FIQ
 155         select TIMER_ACORN
 156         select ARCH_MAY_HAVE_PC_FDC
 157         help
 158           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 159           CD-ROM interface, serial and parallel port, and the floppy drive.
 160
 161 config ARCH_SA1100
 162         bool "SA1100-based"
 163         select ISA
 164         select ARCH_DISCONTIGMEM_ENABLE
 165
 166 config ARCH_S3C2410
 167         bool "Samsung S3C2410"
 168         help
 169           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 170           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 171           the Samsung SMDK2410 development board (and derviatives).
 172
 173 config ARCH_SHARK
 174         bool "Shark"
 175         select ISA
 176         select ISA_DMA
 177         select PCI
 178
 179 config ARCH_LH7A40X
 180         bool "Sharp LH7A40X"
 181         help
 182           Say Y here for systems based on one of the Sharp LH7A40X
 183           System on a Chip processors.  These CPUs include an ARM922T
 184           core with a wide array of integrated devices for
 185           hand-held and low-power applications.
 186
 187 config ARCH_OMAP
 188         bool "TI OMAP"
 189
 190 config ARCH_VERSATILE
 191         bool "Versatile"
 192         select ARM_AMBA
 193         select ICST307
 194         help
 195           This enables support for ARM Ltd Versatile board.
 196
 197 config ARCH_REALVIEW
 198         bool "RealView"
 199         select ARM_AMBA
 200         select ICST307
 201         help
 202           This enables support for ARM Ltd RealView boards.
 203
 204 config ARCH_IMX
 205         bool "IMX"
 206
 207 config ARCH_H720X
 208         bool "Hynix-HMS720x-based"
 209         help
 210           This enables support for systems based on the Hynix HMS720x
 211
 212 config ARCH_AAEC2000
 213         bool "Agilent AAEC-2000 based"
 214         select ARM_AMBA
 215         help
 216           This enables support for systems based on the Agilent AAEC-2000
 217
 218 endchoice
 219
 220 source "arch/arm/mach-clps711x/Kconfig"
 221
 222 source "arch/arm/mach-epxa10db/Kconfig"
 223
 224 source "arch/arm/mach-footbridge/Kconfig"
 225
 226 source "arch/arm/mach-integrator/Kconfig"
 227
 228 source "arch/arm/mach-iop3xx/Kconfig"
 229
 230 source "arch/arm/mach-ixp4xx/Kconfig"
 231
 232 source "arch/arm/mach-ixp2000/Kconfig"
 233
 234 source "arch/arm/mach-pxa/Kconfig"
 235
 236 source "arch/arm/mach-sa1100/Kconfig"
 237
 238 source "arch/arm/plat-omap/Kconfig"
 239
 240 source "arch/arm/mach-omap1/Kconfig"
 241
 242 source "arch/arm/mach-s3c2410/Kconfig"
 243
 244 source "arch/arm/mach-lh7a40x/Kconfig"
 245
 246 source "arch/arm/mach-imx/Kconfig"
 247
 248 source "arch/arm/mach-h720x/Kconfig"
 249
 250 source "arch/arm/mach-versatile/Kconfig"
 251
 252 source "arch/arm/mach-aaec2000/Kconfig"
 253
 254 source "arch/arm/mach-realview/Kconfig"
 255
 256 # Definitions to make life easier
 257 config ARCH_ACORN
 258         bool
 259
 260 source arch/arm/mm/Kconfig
 261
 262 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 263 config XSCALE_PMU
 264         bool
 265         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 266         default y
 267
 268 endmenu
 269
 270 source "arch/arm/common/Kconfig"
 271
 272 config FORCE_MAX_ZONEORDER
 273         int
 274         depends on SA1111
 275         default "9"
 276
 277 menu "Bus support"
 278
 279 config ARM_AMBA
 280         bool
 281
 282 config ISA
 283         bool
 284         help
 285           Find out whether you have ISA slots on your motherboard.  ISA is the
 286           name of a bus system, i.e. the way the CPU talks to the other stuff
 287           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 288           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 289           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 290
 291 config ISA_DMA
 292         bool
 293
 294 config ISA_DMA_API
 295         bool
 296         default y
 297
 298 config PCI
 299         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
 300         help
 301           Find out whether you have a PCI motherboard. PCI is the name of a
 302           bus system, i.e. the way the CPU talks to the other stuff inside
 303           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 304           VESA. If you have PCI, say Y, otherwise N.
 305
 306           The PCI-HOWTO, available from
 307           <http://www.tldp.org/docs.html#howto>, contains valuable
 308           information about which PCI hardware does work under Linux and which
 309           doesn't.
 310
 311 # Select the host bridge type
 312 config PCI_HOST_VIA82C505
 313         bool
 314         depends on PCI && ARCH_SHARK
 315         default y
 316
 317 source "drivers/pci/Kconfig"
 318
 319 source "drivers/pcmcia/Kconfig"
 320
 321 endmenu
 322
 323 menu "Kernel Features"
 324
 325 config SMP
 326         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 327         depends on EXPERIMENTAL && REALVIEW_MPCORE
 328         help
 329           This enables support for systems with more than one CPU. If you have
 330           a system with only one CPU, like most personal computers, say N. If
 331           you have a system with more than one CPU, say Y.
 332
 333           If you say N here, the kernel will run on single and multiprocessor
 334           machines, but will use only one CPU of a multiprocessor machine. If
 335           you say Y here, the kernel will run on many, but not all, single
 336           processor machines. On a single processor machine, the kernel will
 337           run faster if you say N here.
 338
 339           See also the <file:Documentation/smp.txt>,
 340           <file:Documentation/i386/IO-APIC.txt>,
 341           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 342           <http://www.linuxdoc.org/docs.html#howto>.
 343
 344           If you don't know what to do here, say N.
 345
 346 config NR_CPUS
 347         int "Maximum number of CPUs (2-32)"
 348         range 2 32
 349         depends on SMP
 350         default "4"
 351
 352 config HOTPLUG_CPU
 353         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 354         depends on SMP && HOTPLUG && EXPERIMENTAL
 355         help
 356           Say Y here to experiment with turning CPUs off and on.  CPUs
 357           can be controlled through /sys/devices/system/cpu.
 358
 359 config LOCAL_TIMERS
 360         bool "Use local timer interrupts"
 361         depends on SMP && n
 362         default y
 363         help
 364           Enable support for local timers on SMP platforms, rather then the
 365           legacy IPI broadcast method.  Local timers allows the system
 366           accounting to be spread across the timer interval, preventing a
 367           "thundering herd" at every timer tick.
 368
 369 config PREEMPT
 370         bool "Preemptible Kernel (EXPERIMENTAL)"
 371         depends on EXPERIMENTAL
 372         help
 373           This option reduces the latency of the kernel when reacting to
 374           real-time or interactive events by allowing a low priority process to
 375           be preempted even if it is in kernel mode executing a system call.
 376           This allows applications to run more reliably even when the system is
 377           under load.
 378
 379           Say Y here if you are building a kernel for a desktop, embedded
 380           or real-time system.  Say N if you are unsure.
 381
 382 config NO_IDLE_HZ
 383         bool "Dynamic tick timer"
 384         help
 385           Select this option if you want to disable continuous timer ticks
 386           and have them programmed to occur as required. This option saves
 387           power as the system can remain in idle state for longer.
 388
 389           By default dynamic tick is disabled during the boot, and can be
 390           manually enabled with:
 391
 392             echo 1 > /sys/devices/system/timer/timer0/dyn_tick
 393
 394           Alternatively, if you want dynamic tick automatically enabled
 395           during boot, pass "dyntick=enable" via the kernel command string.
 396
 397           Please note that dynamic tick may affect the accuracy of
 398           timekeeping on some platforms depending on the implementation.
 399           Currently at least OMAP, PXA2xx and SA11x0 platforms are known
 400           to have accurate timekeeping with dynamic tick.
 401
 402 config ARCH_DISCONTIGMEM_ENABLE
 403         bool
 404         default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
 405         help
 406           Say Y to support efficient handling of discontiguous physical memory,
 407           for architectures which are either NUMA (Non-Uniform Memory Access)
 408           or have huge holes in the physical address space for other reasons.
 409           See <file:Documentation/vm/numa> for more.
 410
 411 source "mm/Kconfig"
 412
 413 config LEDS
 414         bool "Timer and CPU usage LEDs"
 415         depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
 416                    ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
 417                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
 418                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
 419                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE
 420         help
 421           If you say Y here, the LEDs on your machine will be used
 422           to provide useful information about your current system status.
 423
 424           If you are compiling a kernel for a NetWinder or EBSA-285, you will
 425           be able to select which LEDs are active using the options below. If
 426           you are compiling a kernel for the EBSA-110 or the LART however, the
 427           red LED will simply flash regularly to indicate that the system is
 428           still functional. It is safe to say Y here if you have a CATS
 429           system, but the driver will do nothing.
 430
 431 config LEDS_TIMER
 432         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
 433                             MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
 434         depends on LEDS
 435         default y if ARCH_EBSA110
 436         help
 437           If you say Y here, one of the system LEDs (the green one on the
 438           NetWinder, the amber one on the EBSA285, or the red one on the LART)
 439           will flash regularly to indicate that the system is still
 440           operational. This is mainly useful to kernel hackers who are
 441           debugging unstable kernels.
 442
 443           The LART uses the same LED for both Timer LED and CPU usage LED
 444           functions. You may choose to use both, but the Timer LED function
 445           will overrule the CPU usage LED.
 446
 447 config LEDS_CPU
 448         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
 449                         !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
 450         depends on LEDS
 451         help
 452           If you say Y here, the red LED will be used to give a good real
 453           time indication of CPU usage, by lighting whenever the idle task
 454           is not currently executing.
 455
 456           The LART uses the same LED for both Timer LED and CPU usage LED
 457           functions. You may choose to use both, but the Timer LED function
 458           will overrule the CPU usage LED.
 459
 460 config ALIGNMENT_TRAP
 461         bool
 462         default y if !ARCH_EBSA110
 463         help
 464           ARM processors can not fetch/store information which is not
 465           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
 466           address divisible by 4. On 32-bit ARM processors, these non-aligned
 467           fetch/store instructions will be emulated in software if you say
 468           here, which has a severe performance impact. This is necessary for
 469           correct operation of some network protocols. With an IP-only
 470           configuration it is safe to say N, otherwise say Y.
 471
 472 endmenu
 473
 474 menu "Boot options"
 475
 476 # Compressed boot loader in ROM.  Yes, we really want to ask about
 477 # TEXT and BSS so we preserve their values in the config files.
 478 config ZBOOT_ROM_TEXT
 479         hex "Compressed ROM boot loader base address"
 480         default "0"
 481         help
 482           The physical address at which the ROM-able zImage is to be
 483           placed in the target.  Platforms which normally make use of
 484           ROM-able zImage formats normally set this to a suitable
 485           value in their defconfig file.
 486
 487           If ZBOOT_ROM is not enabled, this has no effect.
 488
 489 config ZBOOT_ROM_BSS
 490         hex "Compressed ROM boot loader BSS address"
 491         default "0"
 492         help
 493           The base address of 64KiB of read/write memory in the target
 494           for the ROM-able zImage, which must be available while the
 495           decompressor is running.  Platforms which normally make use of
 496           ROM-able zImage formats normally set this to a suitable
 497           value in their defconfig file.
 498
 499           If ZBOOT_ROM is not enabled, this has no effect.
 500
 501 config ZBOOT_ROM
 502         bool "Compressed boot loader in ROM/flash"
 503         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
 504         help
 505           Say Y here if you intend to execute your compressed kernel image
 506           (zImage) directly from ROM or flash.  If unsure, say N.
 507
 508 config CMDLINE
 509         string "Default kernel command string"
 510         default ""
 511         help
 512           On some architectures (EBSA110 and CATS), there is currently no way
 513           for the boot loader to pass arguments to the kernel. For these
 514           architectures, you should supply some command-line options at build
 515           time by entering them here. As a minimum, you should specify the
 516           memory size and the root device (e.g., mem=64M root=/dev/nfs).
 517
 518 config XIP_KERNEL
 519         bool "Kernel Execute-In-Place from ROM"
 520         depends on !ZBOOT_ROM
 521         help
 522           Execute-In-Place allows the kernel to run from non-volatile storage
 523           directly addressable by the CPU, such as NOR flash. This saves RAM
 524           space since the text section of the kernel is not loaded from flash
 525           to RAM.  Read-write sections, such as the data section and stack,
 526           are still copied to RAM.  The XIP kernel is not compressed since
 527           it has to run directly from flash, so it will take more space to
 528           store it.  The flash address used to link the kernel object files,
 529           and for storing it, is configuration dependent. Therefore, if you
 530           say Y here, you must know the proper physical address where to
 531           store the kernel image depending on your own flash memory usage.
 532
 533           Also note that the make target becomes "make xipImage" rather than
 534           "make zImage" or "make Image".  The final kernel binary to put in
 535           ROM memory will be arch/arm/boot/xipImage.
 536
 537           If unsure, say N.
 538
 539 config XIP_PHYS_ADDR
 540         hex "XIP Kernel Physical Location"
 541         depends on XIP_KERNEL
 542         default "0x00080000"
 543         help
 544           This is the physical address in your flash memory the kernel will
 545           be linked for and stored to.  This address is dependent on your
 546           own flash usage.
 547
 548 endmenu
 549
 550 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
 551
 552 menu "CPU Frequency scaling"
 553
 554 source "drivers/cpufreq/Kconfig"
 555
 556 config CPU_FREQ_SA1100
 557         bool
 558         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
 559         default y
 560
 561 config CPU_FREQ_SA1110
 562         bool
 563         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
 564         default y
 565
 566 config CPU_FREQ_INTEGRATOR
 567         tristate "CPUfreq driver for ARM Integrator CPUs"
 568         depends on ARCH_INTEGRATOR && CPU_FREQ
 569         default y
 570         help
 571           This enables the CPUfreq driver for ARM Integrator CPUs.
 572
 573           For details, take a look at <file:Documentation/cpu-freq>.
 574
 575           If in doubt, say Y.
 576
 577 endmenu
 578
 579 endif
 580
 581 menu "Floating point emulation"
 582
 583 comment "At least one emulation must be selected"
 584
 585 config FPE_NWFPE
 586         bool "NWFPE math emulation"
 587         ---help---
 588           Say Y to include the NWFPE floating point emulator in the kernel.
 589           This is necessary to run most binaries. Linux does not currently
 590           support floating point hardware so you need to say Y here even if
 591           your machine has an FPA or floating point co-processor podule.
 592
 593           You may say N here if you are going to load the Acorn FPEmulator
 594           early in the bootup.
 595
 596 config FPE_NWFPE_XP
 597         bool "Support extended precision"
 598         depends on FPE_NWFPE
 599         help
 600           Say Y to include 80-bit support in the kernel floating-point
 601           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
 602           Note that gcc does not generate 80-bit operations by default,
 603           so in most cases this option only enlarges the size of the
 604           floating point emulator without any good reason.
 605
 606           You almost surely want to say N here.
 607
 608 config FPE_FASTFPE
 609         bool "FastFPE math emulation (EXPERIMENTAL)"
 610         depends on !CPU_32v3 && EXPERIMENTAL
 611         ---help---
 612           Say Y here to include the FAST floating point emulator in the kernel.
 613           This is an experimental much faster emulator which now also has full
 614           precision for the mantissa.  It does not support any exceptions.
 615           It is very simple, and approximately 3-6 times faster than NWFPE.
 616
 617           It should be sufficient for most programs.  It may be not suitable
 618           for scientific calculations, but you have to check this for yourself.
 619           If you do not feel you need a faster FP emulation you should better
 620           choose NWFPE.
 621
 622 config VFP
 623         bool "VFP-format floating point maths"
 624         depends on CPU_V6 || CPU_ARM926T
 625         help
 626           Say Y to include VFP support code in the kernel. This is needed
 627           if your hardware includes a VFP unit.
 628
 629           Please see <file:Documentation/arm/VFP/release-notes.txt> for
 630           release notes and additional status information.
 631
 632           Say N if your target does not have VFP hardware.
 633
 634 endmenu
 635
 636 menu "Userspace binary formats"
 637
 638 source "fs/Kconfig.binfmt"
 639
 640 config ARTHUR
 641         tristate "RISC OS personality"
 642         help
 643           Say Y here to include the kernel code necessary if you want to run
 644           Acorn RISC OS/Arthur binaries under Linux. This code is still very
 645           experimental; if this sounds frightening, say N and sleep in peace.
 646           You can also say M here to compile this support as a module (which
 647           will be called arthur).
 648
 649 endmenu
 650
 651 menu "Power management options"
 652
 653 config PM
 654         bool "Power Management support"
 655         ---help---
 656           "Power Management" means that parts of your computer are shut
 657           off or put into a power conserving "sleep" mode if they are not
 658           being used.  There are two competing standards for doing this: APM
 659           and ACPI.  If you want to use either one, say Y here and then also
 660           to the requisite support below.
 661
 662           Power Management is most important for battery powered laptop
 663           computers; if you have a laptop, check out the Linux Laptop home
 664           page on the WWW at <http://www.linux-on-laptops.com/> or
 665           Tuxmobil - Linux on Mobile Computers at <http://www.tuxmobil.org/>
 666           and the Battery Powered Linux mini-HOWTO, available from
 667           <http://www.tldp.org/docs.html#howto>.
 668
 669 config APM
 670         tristate "Advanced Power Management Emulation"
 671         depends on PM
 672         ---help---
 673           APM is a BIOS specification for saving power using several different
 674           techniques. This is mostly useful for battery powered laptops with
 675           APM compliant BIOSes. If you say Y here, the system time will be
 676           reset after a RESUME operation, the /proc/apm device will provide
 677           battery status information, and user-space programs will receive
 678           notification of APM "events" (e.g. battery status change).
 679
 680           In order to use APM, you will need supporting software. For location
 681           and more information, read <file:Documentation/pm.txt> and the
 682           Battery Powered Linux mini-HOWTO, available from
 683           <http://www.tldp.org/docs.html#howto>.
 684
 685           This driver does not spin down disk drives (see the hdparm(8)
 686           manpage ("man 8 hdparm") for that), and it doesn't turn off
 687           VESA-compliant "green" monitors.
 688
 689           Generally, if you don't have a battery in your machine, there isn't
 690           much point in using this driver and you should say N. If you get
 691           random kernel OOPSes or reboots that don't seem to be related to
 692           anything, try disabling/enabling this option (or disabling/enabling
 693           APM in your BIOS).
 694
 695 endmenu
 696
 697 source "net/Kconfig"
 698
 699 menu "Device Drivers"
 700
 701 source "drivers/base/Kconfig"
 702
 703 if ALIGNMENT_TRAP
 704 source "drivers/mtd/Kconfig"
 705 endif
 706
 707 source "drivers/parport/Kconfig"
 708
 709 source "drivers/pnp/Kconfig"
 710
 711 source "drivers/block/Kconfig"
 712
 713 source "drivers/acorn/block/Kconfig"
 714
 715 if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
 716         || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
 717         || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
 718 source "drivers/ide/Kconfig"
 719 endif
 720
 721 source "drivers/scsi/Kconfig"
 722
 723 source "drivers/md/Kconfig"
 724
 725 source "drivers/message/fusion/Kconfig"
 726
 727 source "drivers/ieee1394/Kconfig"
 728
 729 source "drivers/message/i2o/Kconfig"
 730
 731 source "drivers/net/Kconfig"
 732
 733 source "drivers/isdn/Kconfig"
 734
 735 # input before char - char/joystick depends on it. As does USB.
 736
 737 source "drivers/input/Kconfig"
 738
 739 source "drivers/char/Kconfig"
 740
 741 source "drivers/i2c/Kconfig"
 742
 743 source "drivers/hwmon/Kconfig"
 744
 745 #source "drivers/l3/Kconfig"
 746
 747 source "drivers/misc/Kconfig"
 748
 749 source "drivers/mfd/Kconfig"
 750
 751 source "drivers/media/Kconfig"
 752
 753 source "drivers/video/Kconfig"
 754
 755 source "sound/Kconfig"
 756
 757 source "drivers/usb/Kconfig"
 758
 759 source "drivers/mmc/Kconfig"
 760
 761 endmenu
 762
 763 source "fs/Kconfig"
 764
 765 source "arch/arm/oprofile/Kconfig"
 766
 767 source "arch/arm/Kconfig.debug"
 768
 769 source "security/Kconfig"
 770
 771 source "crypto/Kconfig"
 772
 773 source "lib/Kconfig"