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         select RTC_LIB
  12         help
  13           The ARM series is a line of low-power-consumption RISC chip designs
  14           licensed by ARM Ltd and targeted at embedded applications and
  15           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  16           manufactured, but legacy ARM-based PC hardware remains popular in
  17           Europe.  There is an ARM Linux project with a web page at
  18           <http://www.arm.linux.org.uk/>.
  19
  20 config MMU
  21         bool
  22         default y
  23
  24 config EISA
  25         bool
  26         ---help---
  27           The Extended Industry Standard Architecture (EISA) bus was
  28           developed as an open alternative to the IBM MicroChannel bus.
  29
  30           The EISA bus provided some of the features of the IBM MicroChannel
  31           bus while maintaining backward compatibility with cards made for
  32           the older ISA bus.  The EISA bus saw limited use between 1988 and
  33           1995 when it was made obsolete by the PCI bus.
  34
  35           Say Y here if you are building a kernel for an EISA-based machine.
  36
  37           Otherwise, say N.
  38
  39 config SBUS
  40         bool
  41
  42 config MCA
  43         bool
  44         help
  45           MicroChannel Architecture is found in some IBM PS/2 machines and
  46           laptops.  It is a bus system similar to PCI or ISA. See
  47           <file:Documentation/mca.txt> (and especially the web page given
  48           there) before attempting to build an MCA bus kernel.
  49
  50 config RWSEM_GENERIC_SPINLOCK
  51         bool
  52         default y
  53
  54 config RWSEM_XCHGADD_ALGORITHM
  55         bool
  56
  57 config GENERIC_HWEIGHT
  58         bool
  59         default y
  60
  61 config GENERIC_CALIBRATE_DELAY
  62         bool
  63         default y
  64
  65 config GENERIC_BUST_SPINLOCK
  66         bool
  67
  68 config ARCH_MAY_HAVE_PC_FDC
  69         bool
  70
  71 config GENERIC_ISA_DMA
  72         bool
  73
  74 config FIQ
  75         bool
  76
  77 config ARCH_MTD_XIP
  78         bool
  79
  80 config VECTORS_BASE
  81         hex
  82         default 0xffff0000 if MMU
  83         default DRAM_BASE if REMAP_VECTORS_TO_RAM
  84         default 0x00000000
  85         help
  86           The base address of exception vectors.
  87
  88 source "init/Kconfig"
  89
  90 menu "System Type"
  91
  92 choice
  93         prompt "ARM system type"
  94         default ARCH_VERSATILE
  95
  96 config ARCH_AAEC2000
  97         bool "Agilent AAEC-2000 based"
  98         select ARM_AMBA
  99         help
 100           This enables support for systems based on the Agilent AAEC-2000
 101
 102 config ARCH_INTEGRATOR
 103         bool "ARM Ltd. Integrator family"
 104         select ARM_AMBA
 105         select ICST525
 106         help
 107           Support for ARM's Integrator platform.
 108
 109 config ARCH_REALVIEW
 110         bool "ARM Ltd. RealView family"
 111         select ARM_AMBA
 112         select ICST307
 113         help
 114           This enables support for ARM Ltd RealView boards.
 115
 116 config ARCH_VERSATILE
 117         bool "ARM Ltd. Versatile family"
 118         select ARM_AMBA
 119         select ARM_VIC
 120         select ICST307
 121         help
 122           This enables support for ARM Ltd Versatile board.
 123
 124 config ARCH_AT91RM9200
 125         bool "Atmel AT91RM9200"
 126         help
 127           Say Y here if you intend to run this kernel on an Atmel
 128           AT91RM9200-based board.
 129
 130 config ARCH_CLPS7500
 131         bool "Cirrus CL-PS7500FE"
 132         select TIMER_ACORN
 133         select ISA
 134         help
 135           Support for the Cirrus Logic PS7500FE system-on-a-chip.
 136
 137 config ARCH_CLPS711X
 138         bool "Cirrus Logic CLPS711x/EP721x-based"
 139         help
 140           Support for Cirrus Logic 711x/721x based boards.
 141
 142 config ARCH_CO285
 143         bool "Co-EBSA285"
 144         select FOOTBRIDGE
 145         select FOOTBRIDGE_ADDIN
 146         help
 147           Support for Intel's EBSA285 companion chip.
 148
 149 config ARCH_EBSA110
 150         bool "EBSA-110"
 151         select ISA
 152         help
 153           This is an evaluation board for the StrongARM processor available
 154           from Digital. It has limited hardware on-board, including an
 155           Ethernet interface, two PCMCIA sockets, two serial ports and a
 156           parallel port.
 157
 158 config ARCH_EP93XX
 159         bool "EP93xx-based"
 160         select ARM_AMBA
 161         select ARM_VIC
 162         help
 163           This enables support for the Cirrus EP93xx series of CPUs.
 164
 165 config ARCH_FOOTBRIDGE
 166         bool "FootBridge"
 167         select FOOTBRIDGE
 168         help
 169           Support for systems based on the DC21285 companion chip
 170           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 171
 172 config ARCH_NETX
 173         bool "Hilscher NetX based"
 174         select ARM_VIC
 175         help
 176           This enables support for systems based on the Hilscher NetX Soc
 177
 178 config ARCH_H720X
 179         bool "Hynix HMS720x-based"
 180         select ISA_DMA_API
 181         help
 182           This enables support for systems based on the Hynix HMS720x
 183
 184 config ARCH_IMX
 185         bool "IMX"
 186         help
 187           Support for Motorola's i.MX family of processors (MX1, MXL).
 188
 189 config ARCH_IOP3XX
 190         bool "IOP3xx-based"
 191         select PCI
 192         help
 193           Support for Intel's IOP3XX (XScale) family of processors.
 194
 195 config ARCH_IXP4XX
 196         bool "IXP4xx-based"
 197         help
 198           Support for Intel's IXP4XX (XScale) family of processors.
 199
 200 config ARCH_IXP2000
 201         bool "IXP2400/2800-based"
 202         select PCI
 203         help
 204           Support for Intel's IXP2400/2800 (XScale) family of processors.
 205
 206 config ARCH_IXP23XX
 207         bool "IXP23XX-based"
 208         select PCI
 209         help
 210           Support for Intel's IXP23xx (XScale) family of processors.
 211
 212 config ARCH_L7200
 213         bool "LinkUp-L7200"
 214         select FIQ
 215         help
 216           Say Y here if you intend to run this kernel on a LinkUp Systems
 217           L7200 Software Development Board which uses an ARM720T processor.
 218           Information on this board can be obtained at:
 219
 220           <http://www.linkupsys.com/>
 221
 222           If you have any questions or comments about the Linux kernel port
 223           to this board, send e-mail to <sjhill@cotw.com>.
 224
 225 config ARCH_PNX4008
 226         bool "Philips Nexperia PNX4008 Mobile"
 227         help
 228           This enables support for Philips PNX4008 mobile platform.
 229
 230 config ARCH_PXA
 231         bool "PXA2xx-based"
 232         select ARCH_MTD_XIP
 233         help
 234           Support for Intel's PXA2XX processor line.
 235
 236 config ARCH_RPC
 237         bool "RiscPC"
 238         select ARCH_ACORN
 239         select FIQ
 240         select TIMER_ACORN
 241         select ARCH_MAY_HAVE_PC_FDC
 242         select ISA_DMA_API
 243         help
 244           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 245           CD-ROM interface, serial and parallel port, and the floppy drive.
 246
 247 config ARCH_SA1100
 248         bool "SA1100-based"
 249         select ISA
 250         select ARCH_DISCONTIGMEM_ENABLE
 251         select ARCH_MTD_XIP
 252         help
 253           Support for StrongARM 11x0 based boards.
 254
 255 config ARCH_S3C2410
 256         bool "Samsung S3C2410"
 257         help
 258           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 259           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 260           the Samsung SMDK2410 development board (and derivatives).
 261
 262 config ARCH_SHARK
 263         bool "Shark"
 264         select ISA
 265         select ISA_DMA
 266         select PCI
 267         help
 268           Support for the StrongARM based Digital DNARD machine, also known
 269           as "Shark" (<http://www.shark-linux.de/shark.html>).
 270
 271 config ARCH_LH7A40X
 272         bool "Sharp LH7A40X"
 273         help
 274           Say Y here for systems based on one of the Sharp LH7A40X
 275           System on a Chip processors.  These CPUs include an ARM922T
 276           core with a wide array of integrated devices for
 277           hand-held and low-power applications.
 278
 279 config ARCH_OMAP
 280         bool "TI OMAP"
 281         help
 282           Support for TI's OMAP platform (OMAP1 and OMAP2).
 283
 284 endchoice
 285
 286 source "arch/arm/mach-clps711x/Kconfig"
 287
 288 source "arch/arm/mach-ep93xx/Kconfig"
 289
 290 source "arch/arm/mach-footbridge/Kconfig"
 291
 292 source "arch/arm/mach-integrator/Kconfig"
 293
 294 source "arch/arm/mach-iop3xx/Kconfig"
 295
 296 source "arch/arm/mach-ixp4xx/Kconfig"
 297
 298 source "arch/arm/mach-ixp2000/Kconfig"
 299
 300 source "arch/arm/mach-ixp23xx/Kconfig"
 301
 302 source "arch/arm/mach-pxa/Kconfig"
 303
 304 source "arch/arm/mach-sa1100/Kconfig"
 305
 306 source "arch/arm/plat-omap/Kconfig"
 307
 308 source "arch/arm/mach-omap1/Kconfig"
 309
 310 source "arch/arm/mach-omap2/Kconfig"
 311
 312 source "arch/arm/mach-s3c2410/Kconfig"
 313
 314 source "arch/arm/mach-lh7a40x/Kconfig"
 315
 316 source "arch/arm/mach-imx/Kconfig"
 317
 318 source "arch/arm/mach-h720x/Kconfig"
 319
 320 source "arch/arm/mach-versatile/Kconfig"
 321
 322 source "arch/arm/mach-aaec2000/Kconfig"
 323
 324 source "arch/arm/mach-realview/Kconfig"
 325
 326 source "arch/arm/mach-at91rm9200/Kconfig"
 327
 328 source "arch/arm/mach-netx/Kconfig"
 329
 330 # Definitions to make life easier
 331 config ARCH_ACORN
 332         bool
 333
 334 source arch/arm/mm/Kconfig
 335
 336 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 337 config XSCALE_PMU
 338         bool
 339         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 340         default y
 341
 342 endmenu
 343
 344 source "arch/arm/common/Kconfig"
 345
 346 config FORCE_MAX_ZONEORDER
 347         int
 348         depends on SA1111
 349         default "9"
 350
 351 menu "Bus support"
 352
 353 config ARM_AMBA
 354         bool
 355
 356 config ISA
 357         bool
 358         help
 359           Find out whether you have ISA slots on your motherboard.  ISA is the
 360           name of a bus system, i.e. the way the CPU talks to the other stuff
 361           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 362           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 363           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 364
 365 # Select ISA DMA controller support
 366 config ISA_DMA
 367         bool
 368         select ISA_DMA_API
 369
 370 # Select ISA DMA interface
 371 config ISA_DMA_API
 372         bool
 373
 374 config PCI
 375         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
 376         help
 377           Find out whether you have a PCI motherboard. PCI is the name of a
 378           bus system, i.e. the way the CPU talks to the other stuff inside
 379           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 380           VESA. If you have PCI, say Y, otherwise N.
 381
 382           The PCI-HOWTO, available from
 383           <http://www.tldp.org/docs.html#howto>, contains valuable
 384           information about which PCI hardware does work under Linux and which
 385           doesn't.
 386
 387 # Select the host bridge type
 388 config PCI_HOST_VIA82C505
 389         bool
 390         depends on PCI && ARCH_SHARK
 391         default y
 392
 393 source "drivers/pci/Kconfig"
 394
 395 source "drivers/pcmcia/Kconfig"
 396
 397 endmenu
 398
 399 menu "Kernel Features"
 400
 401 config SMP
 402         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 403         depends on EXPERIMENTAL && REALVIEW_MPCORE
 404         help
 405           This enables support for systems with more than one CPU. If you have
 406           a system with only one CPU, like most personal computers, say N. If
 407           you have a system with more than one CPU, say Y.
 408
 409           If you say N here, the kernel will run on single and multiprocessor
 410           machines, but will use only one CPU of a multiprocessor machine. If
 411           you say Y here, the kernel will run on many, but not all, single
 412           processor machines. On a single processor machine, the kernel will
 413           run faster if you say N here.
 414
 415           See also the <file:Documentation/smp.txt>,
 416           <file:Documentation/i386/IO-APIC.txt>,
 417           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 418           <http://www.linuxdoc.org/docs.html#howto>.
 419
 420           If you don't know what to do here, say N.
 421
 422 config NR_CPUS
 423         int "Maximum number of CPUs (2-32)"
 424         range 2 32
 425         depends on SMP
 426         default "4"
 427
 428 config HOTPLUG_CPU
 429         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 430         depends on SMP && HOTPLUG && EXPERIMENTAL
 431         help
 432           Say Y here to experiment with turning CPUs off and on.  CPUs
 433           can be controlled through /sys/devices/system/cpu.
 434
 435 config LOCAL_TIMERS
 436         bool "Use local timer interrupts"
 437         depends on SMP && REALVIEW_MPCORE
 438         default y
 439         help
 440           Enable support for local timers on SMP platforms, rather then the
 441           legacy IPI broadcast method.  Local timers allows the system
 442           accounting to be spread across the timer interval, preventing a
 443           "thundering herd" at every timer tick.
 444
 445 config PREEMPT
 446         bool "Preemptible Kernel (EXPERIMENTAL)"
 447         depends on EXPERIMENTAL
 448         help
 449           This option reduces the latency of the kernel when reacting to
 450           real-time or interactive events by allowing a low priority process to
 451           be preempted even if it is in kernel mode executing a system call.
 452           This allows applications to run more reliably even when the system is
 453           under load.
 454
 455           Say Y here if you are building a kernel for a desktop, embedded
 456           or real-time system.  Say N if you are unsure.
 457
 458 config NO_IDLE_HZ
 459         bool "Dynamic tick timer"
 460         help
 461           Select this option if you want to disable continuous timer ticks
 462           and have them programmed to occur as required. This option saves
 463           power as the system can remain in idle state for longer.
 464
 465           By default dynamic tick is disabled during the boot, and can be
 466           manually enabled with:
 467
 468             echo 1 > /sys/devices/system/timer/timer0/dyn_tick
 469
 470           Alternatively, if you want dynamic tick automatically enabled
 471           during boot, pass "dyntick=enable" via the kernel command string.
 472
 473           Please note that dynamic tick may affect the accuracy of
 474           timekeeping on some platforms depending on the implementation.
 475           Currently at least OMAP, PXA2xx and SA11x0 platforms are known
 476           to have accurate timekeeping with dynamic tick.
 477
 478 config HZ
 479         int
 480         default 128 if ARCH_L7200
 481         default 200 if ARCH_EBSA110 || ARCH_S3C2410
 482         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
 483         default 100
 484
 485 config AEABI
 486         bool "Use the ARM EABI to compile the kernel"
 487         help
 488           This option allows for the kernel to be compiled using the latest
 489           ARM ABI (aka EABI).  This is only useful if you are using a user
 490           space environment that is also compiled with EABI.
 491
 492           Since there are major incompatibilities between the legacy ABI and
 493           EABI, especially with regard to structure member alignment, this
 494           option also changes the kernel syscall calling convention to
 495           disambiguate both ABIs and allow for backward compatibility support
 496           (selected with CONFIG_OABI_COMPAT).
 497
 498           To use this you need GCC version 4.0.0 or later.
 499
 500 config OABI_COMPAT
 501         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
 502         depends on AEABI && EXPERIMENTAL
 503         default y
 504         help
 505           This option preserves the old syscall interface along with the
 506           new (ARM EABI) one. It also provides a compatibility layer to
 507           intercept syscalls that have structure arguments which layout
 508           in memory differs between the legacy ABI and the new ARM EABI
 509           (only for non "thumb" binaries). This option adds a tiny
 510           overhead to all syscalls and produces a slightly larger kernel.
 511           If you know you'll be using only pure EABI user space then you
 512           can say N here. If this option is not selected and you attempt
 513           to execute a legacy ABI binary then the result will be
 514           UNPREDICTABLE (in fact it can be predicted that it won't work
 515           at all). If in doubt say Y.
 516
 517 config ARCH_DISCONTIGMEM_ENABLE
 518         bool
 519         default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
 520         help
 521           Say Y to support efficient handling of discontiguous physical memory,
 522           for architectures which are either NUMA (Non-Uniform Memory Access)
 523           or have huge holes in the physical address space for other reasons.
 524           See <file:Documentation/vm/numa> for more.
 525
 526 config NODES_SHIFT
 527         int
 528         default "4" if ARCH_LH7A40X
 529         default "2"
 530         depends on NEED_MULTIPLE_NODES
 531
 532 source "mm/Kconfig"
 533
 534 config LEDS
 535         bool "Timer and CPU usage LEDs"
 536         depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
 537                    ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
 538                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
 539                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
 540                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
 541                    ARCH_AT91RM9200
 542         help
 543           If you say Y here, the LEDs on your machine will be used
 544           to provide useful information about your current system status.
 545
 546           If you are compiling a kernel for a NetWinder or EBSA-285, you will
 547           be able to select which LEDs are active using the options below. If
 548           you are compiling a kernel for the EBSA-110 or the LART however, the
 549           red LED will simply flash regularly to indicate that the system is
 550           still functional. It is safe to say Y here if you have a CATS
 551           system, but the driver will do nothing.
 552
 553 config LEDS_TIMER
 554         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
 555                             MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
 556         depends on LEDS
 557         default y if ARCH_EBSA110
 558         help
 559           If you say Y here, one of the system LEDs (the green one on the
 560           NetWinder, the amber one on the EBSA285, or the red one on the LART)
 561           will flash regularly to indicate that the system is still
 562           operational. This is mainly useful to kernel hackers who are
 563           debugging unstable kernels.
 564
 565           The LART uses the same LED for both Timer LED and CPU usage LED
 566           functions. You may choose to use both, but the Timer LED function
 567           will overrule the CPU usage LED.
 568
 569 config LEDS_CPU
 570         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
 571                         !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
 572         depends on LEDS
 573         help
 574           If you say Y here, the red LED will be used to give a good real
 575           time indication of CPU usage, by lighting whenever the idle task
 576           is not currently executing.
 577
 578           The LART uses the same LED for both Timer LED and CPU usage LED
 579           functions. You may choose to use both, but the Timer LED function
 580           will overrule the CPU usage LED.
 581
 582 config ALIGNMENT_TRAP
 583         bool
 584         default y if !ARCH_EBSA110
 585         help
 586           ARM processors can not fetch/store information which is not
 587           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
 588           address divisible by 4. On 32-bit ARM processors, these non-aligned
 589           fetch/store instructions will be emulated in software if you say
 590           here, which has a severe performance impact. This is necessary for
 591           correct operation of some network protocols. With an IP-only
 592           configuration it is safe to say N, otherwise say Y.
 593
 594 endmenu
 595
 596 menu "Boot options"
 597
 598 # Compressed boot loader in ROM.  Yes, we really want to ask about
 599 # TEXT and BSS so we preserve their values in the config files.
 600 config ZBOOT_ROM_TEXT
 601         hex "Compressed ROM boot loader base address"
 602         default "0"
 603         help
 604           The physical address at which the ROM-able zImage is to be
 605           placed in the target.  Platforms which normally make use of
 606           ROM-able zImage formats normally set this to a suitable
 607           value in their defconfig file.
 608
 609           If ZBOOT_ROM is not enabled, this has no effect.
 610
 611 config ZBOOT_ROM_BSS
 612         hex "Compressed ROM boot loader BSS address"
 613         default "0"
 614         help
 615           The base address of 64KiB of read/write memory in the target
 616           for the ROM-able zImage, which must be available while the
 617           decompressor is running.  Platforms which normally make use of
 618           ROM-able zImage formats normally set this to a suitable
 619           value in their defconfig file.
 620
 621           If ZBOOT_ROM is not enabled, this has no effect.
 622
 623 config ZBOOT_ROM
 624         bool "Compressed boot loader in ROM/flash"
 625         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
 626         help
 627           Say Y here if you intend to execute your compressed kernel image
 628           (zImage) directly from ROM or flash.  If unsure, say N.
 629
 630 config CMDLINE
 631         string "Default kernel command string"
 632         default ""
 633         help
 634           On some architectures (EBSA110 and CATS), there is currently no way
 635           for the boot loader to pass arguments to the kernel. For these
 636           architectures, you should supply some command-line options at build
 637           time by entering them here. As a minimum, you should specify the
 638           memory size and the root device (e.g., mem=64M root=/dev/nfs).
 639
 640 config XIP_KERNEL
 641         bool "Kernel Execute-In-Place from ROM"
 642         depends on !ZBOOT_ROM
 643         help
 644           Execute-In-Place allows the kernel to run from non-volatile storage
 645           directly addressable by the CPU, such as NOR flash. This saves RAM
 646           space since the text section of the kernel is not loaded from flash
 647           to RAM.  Read-write sections, such as the data section and stack,
 648           are still copied to RAM.  The XIP kernel is not compressed since
 649           it has to run directly from flash, so it will take more space to
 650           store it.  The flash address used to link the kernel object files,
 651           and for storing it, is configuration dependent. Therefore, if you
 652           say Y here, you must know the proper physical address where to
 653           store the kernel image depending on your own flash memory usage.
 654
 655           Also note that the make target becomes "make xipImage" rather than
 656           "make zImage" or "make Image".  The final kernel binary to put in
 657           ROM memory will be arch/arm/boot/xipImage.
 658
 659           If unsure, say N.
 660
 661 config XIP_PHYS_ADDR
 662         hex "XIP Kernel Physical Location"
 663         depends on XIP_KERNEL
 664         default "0x00080000"
 665         help
 666           This is the physical address in your flash memory the kernel will
 667           be linked for and stored to.  This address is dependent on your
 668           own flash usage.
 669
 670 endmenu
 671
 672 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
 673
 674 menu "CPU Frequency scaling"
 675
 676 source "drivers/cpufreq/Kconfig"
 677
 678 config CPU_FREQ_SA1100
 679         bool
 680         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
 681         default y
 682
 683 config CPU_FREQ_SA1110
 684         bool
 685         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
 686         default y
 687
 688 config CPU_FREQ_INTEGRATOR
 689         tristate "CPUfreq driver for ARM Integrator CPUs"
 690         depends on ARCH_INTEGRATOR && CPU_FREQ
 691         default y
 692         help
 693           This enables the CPUfreq driver for ARM Integrator CPUs.
 694
 695           For details, take a look at <file:Documentation/cpu-freq>.
 696
 697           If in doubt, say Y.
 698
 699 endmenu
 700
 701 endif
 702
 703 menu "Floating point emulation"
 704
 705 comment "At least one emulation must be selected"
 706
 707 config FPE_NWFPE
 708         bool "NWFPE math emulation"
 709         depends on !AEABI || OABI_COMPAT
 710         ---help---
 711           Say Y to include the NWFPE floating point emulator in the kernel.
 712           This is necessary to run most binaries. Linux does not currently
 713           support floating point hardware so you need to say Y here even if
 714           your machine has an FPA or floating point co-processor podule.
 715
 716           You may say N here if you are going to load the Acorn FPEmulator
 717           early in the bootup.
 718
 719 config FPE_NWFPE_XP
 720         bool "Support extended precision"
 721         depends on FPE_NWFPE
 722         help
 723           Say Y to include 80-bit support in the kernel floating-point
 724           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
 725           Note that gcc does not generate 80-bit operations by default,
 726           so in most cases this option only enlarges the size of the
 727           floating point emulator without any good reason.
 728
 729           You almost surely want to say N here.
 730
 731 config FPE_FASTFPE
 732         bool "FastFPE math emulation (EXPERIMENTAL)"
 733         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
 734         ---help---
 735           Say Y here to include the FAST floating point emulator in the kernel.
 736           This is an experimental much faster emulator which now also has full
 737           precision for the mantissa.  It does not support any exceptions.
 738           It is very simple, and approximately 3-6 times faster than NWFPE.
 739
 740           It should be sufficient for most programs.  It may be not suitable
 741           for scientific calculations, but you have to check this for yourself.
 742           If you do not feel you need a faster FP emulation you should better
 743           choose NWFPE.
 744
 745 config VFP
 746         bool "VFP-format floating point maths"
 747         depends on CPU_V6 || CPU_ARM926T
 748         help
 749           Say Y to include VFP support code in the kernel. This is needed
 750           if your hardware includes a VFP unit.
 751
 752           Please see <file:Documentation/arm/VFP/release-notes.txt> for
 753           release notes and additional status information.
 754
 755           Say N if your target does not have VFP hardware.
 756
 757 endmenu
 758
 759 menu "Userspace binary formats"
 760
 761 source "fs/Kconfig.binfmt"
 762
 763 config ARTHUR
 764         tristate "RISC OS personality"
 765         depends on !AEABI
 766         help
 767           Say Y here to include the kernel code necessary if you want to run
 768           Acorn RISC OS/Arthur binaries under Linux. This code is still very
 769           experimental; if this sounds frightening, say N and sleep in peace.
 770           You can also say M here to compile this support as a module (which
 771           will be called arthur).
 772
 773 endmenu
 774
 775 menu "Power management options"
 776
 777 source "kernel/power/Kconfig"
 778
 779 config APM
 780         tristate "Advanced Power Management Emulation"
 781         ---help---
 782           APM is a BIOS specification for saving power using several different
 783           techniques. This is mostly useful for battery powered laptops with
 784           APM compliant BIOSes. If you say Y here, the system time will be
 785           reset after a RESUME operation, the /proc/apm device will provide
 786           battery status information, and user-space programs will receive
 787           notification of APM "events" (e.g. battery status change).
 788
 789           In order to use APM, you will need supporting software. For location
 790           and more information, read <file:Documentation/pm.txt> and the
 791           Battery Powered Linux mini-HOWTO, available from
 792           <http://www.tldp.org/docs.html#howto>.
 793
 794           This driver does not spin down disk drives (see the hdparm(8)
 795           manpage ("man 8 hdparm") for that), and it doesn't turn off
 796           VESA-compliant "green" monitors.
 797
 798           Generally, if you don't have a battery in your machine, there isn't
 799           much point in using this driver and you should say N. If you get
 800           random kernel OOPSes or reboots that don't seem to be related to
 801           anything, try disabling/enabling this option (or disabling/enabling
 802           APM in your BIOS).
 803
 804 endmenu
 805
 806 source "net/Kconfig"
 807
 808 menu "Device Drivers"
 809
 810 source "drivers/base/Kconfig"
 811
 812 source "drivers/connector/Kconfig"
 813
 814 if ALIGNMENT_TRAP
 815 source "drivers/mtd/Kconfig"
 816 endif
 817
 818 source "drivers/parport/Kconfig"
 819
 820 source "drivers/pnp/Kconfig"
 821
 822 source "drivers/block/Kconfig"
 823
 824 source "drivers/acorn/block/Kconfig"
 825
 826 if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
 827         || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
 828         || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
 829         || ARCH_IXP23XX
 830 source "drivers/ide/Kconfig"
 831 endif
 832
 833 source "drivers/scsi/Kconfig"
 834
 835 source "drivers/md/Kconfig"
 836
 837 source "drivers/message/fusion/Kconfig"
 838
 839 source "drivers/ieee1394/Kconfig"
 840
 841 source "drivers/message/i2o/Kconfig"
 842
 843 source "drivers/net/Kconfig"
 844
 845 source "drivers/isdn/Kconfig"
 846
 847 # input before char - char/joystick depends on it. As does USB.
 848
 849 source "drivers/input/Kconfig"
 850
 851 source "drivers/char/Kconfig"
 852
 853 source "drivers/i2c/Kconfig"
 854
 855 source "drivers/spi/Kconfig"
 856
 857 source "drivers/w1/Kconfig"
 858
 859 source "drivers/hwmon/Kconfig"
 860
 861 #source "drivers/l3/Kconfig"
 862
 863 source "drivers/misc/Kconfig"
 864
 865 source "drivers/mfd/Kconfig"
 866
 867 source "drivers/leds/Kconfig"
 868
 869 source "drivers/media/Kconfig"
 870
 871 source "drivers/video/Kconfig"
 872
 873 source "sound/Kconfig"
 874
 875 source "drivers/usb/Kconfig"
 876
 877 source "drivers/mmc/Kconfig"
 878
 879 source "drivers/rtc/Kconfig"
 880
 881 endmenu
 882
 883 source "fs/Kconfig"
 884
 885 source "arch/arm/oprofile/Kconfig"
 886
 887 source "arch/arm/Kconfig.debug"
 888
 889 source "security/Kconfig"
 890
 891 source "crypto/Kconfig"
 892
 893 source "lib/Kconfig"