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         select SYS_SUPPORTS_APM_EMULATION
  13         help
  14           The ARM series is a line of low-power-consumption RISC chip designs
  15           licensed by ARM Ltd and targeted at embedded applications and
  16           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  17           manufactured, but legacy ARM-based PC hardware remains popular in
  18           Europe.  There is an ARM Linux project with a web page at
  19           <http://www.arm.linux.org.uk/>.
  20
  21 config SYS_SUPPORTS_APM_EMULATION
  22         bool
  23
  24 config GENERIC_GPIO
  25         bool
  26         default n
  27
  28 config GENERIC_TIME
  29         bool
  30         default n
  31
  32 config GENERIC_CLOCKEVENTS
  33         bool
  34         default n
  35
  36 config MMU
  37         bool
  38         default y
  39
  40 config NO_IOPORT
  41         bool
  42         default n
  43
  44 config EISA
  45         bool
  46         ---help---
  47           The Extended Industry Standard Architecture (EISA) bus was
  48           developed as an open alternative to the IBM MicroChannel bus.
  49
  50           The EISA bus provided some of the features of the IBM MicroChannel
  51           bus while maintaining backward compatibility with cards made for
  52           the older ISA bus.  The EISA bus saw limited use between 1988 and
  53           1995 when it was made obsolete by the PCI bus.
  54
  55           Say Y here if you are building a kernel for an EISA-based machine.
  56
  57           Otherwise, say N.
  58
  59 config SBUS
  60         bool
  61
  62 config MCA
  63         bool
  64         help
  65           MicroChannel Architecture is found in some IBM PS/2 machines and
  66           laptops.  It is a bus system similar to PCI or ISA. See
  67           <file:Documentation/mca.txt> (and especially the web page given
  68           there) before attempting to build an MCA bus kernel.
  69
  70 config GENERIC_HARDIRQS
  71         bool
  72         default y
  73
  74 config STACKTRACE_SUPPORT
  75         bool
  76         default y
  77
  78 config LOCKDEP_SUPPORT
  79         bool
  80         default y
  81
  82 config TRACE_IRQFLAGS_SUPPORT
  83         bool
  84         default y
  85
  86 config HARDIRQS_SW_RESEND
  87         bool
  88         default y
  89
  90 config GENERIC_IRQ_PROBE
  91         bool
  92         default y
  93
  94 config RWSEM_GENERIC_SPINLOCK
  95         bool
  96         default y
  97
  98 config RWSEM_XCHGADD_ALGORITHM
  99         bool
 100
 101 config ARCH_HAS_ILOG2_U32
 102         bool
 103         default n
 104
 105 config ARCH_HAS_ILOG2_U64
 106         bool
 107         default n
 108
 109 config GENERIC_HWEIGHT
 110         bool
 111         default y
 112
 113 config GENERIC_CALIBRATE_DELAY
 114         bool
 115         default y
 116
 117 config ARCH_MAY_HAVE_PC_FDC
 118         bool
 119
 120 config ZONE_DMA
 121         bool
 122         default y
 123
 124 config GENERIC_ISA_DMA
 125         bool
 126
 127 config FIQ
 128         bool
 129
 130 config ARCH_MTD_XIP
 131         bool
 132
 133 config VECTORS_BASE
 134         hex
 135         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 136         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 137         default 0x00000000
 138         help
 139           The base address of exception vectors.
 140
 141 source "init/Kconfig"
 142
 143 menu "System Type"
 144
 145 choice
 146         prompt "ARM system type"
 147         default ARCH_VERSATILE
 148
 149 config ARCH_AAEC2000
 150         bool "Agilent AAEC-2000 based"
 151         select ARM_AMBA
 152         help
 153           This enables support for systems based on the Agilent AAEC-2000
 154
 155 config ARCH_INTEGRATOR
 156         bool "ARM Ltd. Integrator family"
 157         select ARM_AMBA
 158         select ICST525
 159         help
 160           Support for ARM's Integrator platform.
 161
 162 config ARCH_REALVIEW
 163         bool "ARM Ltd. RealView family"
 164         select ARM_AMBA
 165         select ICST307
 166         help
 167           This enables support for ARM Ltd RealView boards.
 168
 169 config ARCH_VERSATILE
 170         bool "ARM Ltd. Versatile family"
 171         select ARM_AMBA
 172         select ARM_VIC
 173         select ICST307
 174         select GENERIC_TIME
 175         select GENERIC_CLOCKEVENTS
 176         help
 177           This enables support for ARM Ltd Versatile board.
 178
 179 config ARCH_AT91
 180         bool "Atmel AT91"
 181         select GENERIC_GPIO
 182         help
 183           This enables support for systems based on the Atmel AT91RM9200
 184           and AT91SAM9xxx processors.
 185
 186 config ARCH_CLPS7500
 187         bool "Cirrus CL-PS7500FE"
 188         select TIMER_ACORN
 189         select ISA
 190         select NO_IOPORT
 191         help
 192           Support for the Cirrus Logic PS7500FE system-on-a-chip.
 193
 194 config ARCH_CLPS711X
 195         bool "Cirrus Logic CLPS711x/EP721x-based"
 196         help
 197           Support for Cirrus Logic 711x/721x based boards.
 198
 199 config ARCH_CO285
 200         bool "Co-EBSA285"
 201         select FOOTBRIDGE
 202         select FOOTBRIDGE_ADDIN
 203         help
 204           Support for Intel's EBSA285 companion chip.
 205
 206 config ARCH_EBSA110
 207         bool "EBSA-110"
 208         select ISA
 209         select NO_IOPORT
 210         help
 211           This is an evaluation board for the StrongARM processor available
 212           from Digital. It has limited hardware on-board, including an
 213           Ethernet interface, two PCMCIA sockets, two serial ports and a
 214           parallel port.
 215
 216 config ARCH_EP93XX
 217         bool "EP93xx-based"
 218         select ARM_AMBA
 219         select ARM_VIC
 220         help
 221           This enables support for the Cirrus EP93xx series of CPUs.
 222
 223 config ARCH_FOOTBRIDGE
 224         bool "FootBridge"
 225         select FOOTBRIDGE
 226         help
 227           Support for systems based on the DC21285 companion chip
 228           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 229
 230 config ARCH_NETX
 231         bool "Hilscher NetX based"
 232         select ARM_VIC
 233         help
 234           This enables support for systems based on the Hilscher NetX Soc
 235
 236 config ARCH_H720X
 237         bool "Hynix HMS720x-based"
 238         select ISA_DMA_API
 239         help
 240           This enables support for systems based on the Hynix HMS720x
 241
 242 config ARCH_IMX
 243         bool "IMX"
 244         select GENERIC_GPIO
 245         select GENERIC_TIME
 246         select GENERIC_CLOCKEVENTS
 247         help
 248           Support for Motorola's i.MX family of processors (MX1, MXL).
 249
 250 config ARCH_IOP13XX
 251         bool "IOP13xx-based"
 252         depends on MMU
 253         select PLAT_IOP
 254         select PCI
 255         select ARCH_SUPPORTS_MSI
 256         help
 257           Support for Intel's IOP13XX (XScale) family of processors.
 258
 259 config ARCH_IOP32X
 260         bool "IOP32x-based"
 261         depends on MMU
 262         select PLAT_IOP
 263         select PCI
 264         help
 265           Support for Intel's 80219 and IOP32X (XScale) family of
 266           processors.
 267
 268 config ARCH_IOP33X
 269         bool "IOP33x-based"
 270         depends on MMU
 271         select PLAT_IOP
 272         select PCI
 273         help
 274           Support for Intel's IOP33X (XScale) family of processors.
 275
 276 config ARCH_IXP23XX
 277         bool "IXP23XX-based"
 278         depends on MMU
 279         select PCI
 280         help
 281           Support for Intel's IXP23xx (XScale) family of processors.
 282
 283 config ARCH_IXP2000
 284         bool "IXP2400/2800-based"
 285         depends on MMU
 286         select PCI
 287         help
 288           Support for Intel's IXP2400/2800 (XScale) family of processors.
 289
 290 config ARCH_IXP4XX
 291         bool "IXP4xx-based"
 292         depends on MMU
 293         select GENERIC_GPIO
 294         select GENERIC_TIME
 295         select GENERIC_CLOCKEVENTS
 296         help
 297           Support for Intel's IXP4XX (XScale) family of processors.
 298
 299 config ARCH_L7200
 300         bool "LinkUp-L7200"
 301         select FIQ
 302         help
 303           Say Y here if you intend to run this kernel on a LinkUp Systems
 304           L7200 Software Development Board which uses an ARM720T processor.
 305           Information on this board can be obtained at:
 306
 307           <http://www.linkupsys.com/>
 308
 309           If you have any questions or comments about the Linux kernel port
 310           to this board, send e-mail to <sjhill@cotw.com>.
 311
 312 config ARCH_KS8695
 313         bool "Micrel/Kendin KS8695"
 314         select GENERIC_GPIO
 315         help
 316           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 317           System-on-Chip devices.
 318
 319 config ARCH_NS9XXX
 320         bool "NetSilicon NS9xxx"
 321         select GENERIC_GPIO
 322         select GENERIC_TIME
 323         select GENERIC_CLOCKEVENTS
 324         help
 325           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 326           System.
 327
 328           <http://www.digi.com/products/microprocessors/index.jsp>
 329
 330 config ARCH_MXC
 331         bool "Freescale MXC/iMX-based"
 332         select ARCH_MTD_XIP
 333         help
 334           Support for Freescale MXC/iMX-based family of processors
 335
 336 config ARCH_ORION
 337         bool "Marvell Orion"
 338         depends on MMU
 339         select PCI
 340         help
 341           Support for Marvell Orion System on Chip family.
 342
 343 config ARCH_PNX4008
 344         bool "Philips Nexperia PNX4008 Mobile"
 345         help
 346           This enables support for Philips PNX4008 mobile platform.
 347
 348 config ARCH_PXA
 349         bool "PXA2xx/PXA3xx-based"
 350         depends on MMU
 351         select ARCH_MTD_XIP
 352         select GENERIC_GPIO
 353         select GENERIC_TIME
 354         select GENERIC_CLOCKEVENTS
 355         help
 356           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 357
 358 config ARCH_RPC
 359         bool "RiscPC"
 360         select ARCH_ACORN
 361         select FIQ
 362         select TIMER_ACORN
 363         select ARCH_MAY_HAVE_PC_FDC
 364         select ISA_DMA_API
 365         select NO_IOPORT
 366         help
 367           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 368           CD-ROM interface, serial and parallel port, and the floppy drive.
 369
 370 config ARCH_SA1100
 371         bool "SA1100-based"
 372         select ISA
 373         select ARCH_DISCONTIGMEM_ENABLE
 374         select ARCH_MTD_XIP
 375         select GENERIC_GPIO
 376         help
 377           Support for StrongARM 11x0 based boards.
 378
 379 config ARCH_S3C2410
 380         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 381         select GENERIC_GPIO
 382         help
 383           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 384           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 385           the Samsung SMDK2410 development board (and derivatives).
 386
 387 config ARCH_SHARK
 388         bool "Shark"
 389         select ISA
 390         select ISA_DMA
 391         select PCI
 392         help
 393           Support for the StrongARM based Digital DNARD machine, also known
 394           as "Shark" (<http://www.shark-linux.de/shark.html>).
 395
 396 config ARCH_LH7A40X
 397         bool "Sharp LH7A40X"
 398         help
 399           Say Y here for systems based on one of the Sharp LH7A40X
 400           System on a Chip processors.  These CPUs include an ARM922T
 401           core with a wide array of integrated devices for
 402           hand-held and low-power applications.
 403
 404 config ARCH_DAVINCI
 405         bool "TI DaVinci"
 406         select GENERIC_TIME
 407         select GENERIC_CLOCKEVENTS
 408         select GENERIC_GPIO
 409         help
 410           Support for TI's DaVinci platform.
 411
 412 config ARCH_OMAP
 413         bool "TI OMAP"
 414         select GENERIC_GPIO
 415         select GENERIC_TIME
 416         help
 417           Support for TI's OMAP platform (OMAP1 and OMAP2).
 418
 419 endchoice
 420
 421 source "arch/arm/mach-clps711x/Kconfig"
 422
 423 source "arch/arm/mach-ep93xx/Kconfig"
 424
 425 source "arch/arm/mach-footbridge/Kconfig"
 426
 427 source "arch/arm/mach-integrator/Kconfig"
 428
 429 source "arch/arm/mach-iop32x/Kconfig"
 430
 431 source "arch/arm/mach-iop33x/Kconfig"
 432
 433 source "arch/arm/mach-iop13xx/Kconfig"
 434
 435 source "arch/arm/mach-ixp4xx/Kconfig"
 436
 437 source "arch/arm/mach-ixp2000/Kconfig"
 438
 439 source "arch/arm/mach-ixp23xx/Kconfig"
 440
 441 source "arch/arm/mach-pxa/Kconfig"
 442
 443 source "arch/arm/mach-sa1100/Kconfig"
 444
 445 source "arch/arm/plat-omap/Kconfig"
 446
 447 source "arch/arm/mach-omap1/Kconfig"
 448
 449 source "arch/arm/mach-omap2/Kconfig"
 450
 451 source "arch/arm/mach-orion/Kconfig"
 452
 453 source "arch/arm/plat-s3c24xx/Kconfig"
 454 source "arch/arm/plat-s3c/Kconfig"
 455
 456 if ARCH_S3C2410
 457 source "arch/arm/mach-s3c2400/Kconfig"
 458 source "arch/arm/mach-s3c2410/Kconfig"
 459 source "arch/arm/mach-s3c2412/Kconfig"
 460 source "arch/arm/mach-s3c2440/Kconfig"
 461 source "arch/arm/mach-s3c2442/Kconfig"
 462 source "arch/arm/mach-s3c2443/Kconfig"
 463 endif
 464
 465 source "arch/arm/mach-lh7a40x/Kconfig"
 466
 467 source "arch/arm/mach-imx/Kconfig"
 468
 469 source "arch/arm/mach-h720x/Kconfig"
 470
 471 source "arch/arm/mach-versatile/Kconfig"
 472
 473 source "arch/arm/mach-aaec2000/Kconfig"
 474
 475 source "arch/arm/mach-realview/Kconfig"
 476
 477 source "arch/arm/mach-at91/Kconfig"
 478
 479 source "arch/arm/plat-mxc/Kconfig"
 480
 481 source "arch/arm/mach-netx/Kconfig"
 482
 483 source "arch/arm/mach-ns9xxx/Kconfig"
 484
 485 source "arch/arm/mach-davinci/Kconfig"
 486
 487 source "arch/arm/mach-ks8695/Kconfig"
 488
 489 # Definitions to make life easier
 490 config ARCH_ACORN
 491         bool
 492
 493 config PLAT_IOP
 494         bool
 495
 496 source arch/arm/mm/Kconfig
 497
 498 config IWMMXT
 499         bool "Enable iWMMXt support"
 500         depends on CPU_XSCALE || CPU_XSC3
 501         default y if PXA27x || PXA3xx
 502         help
 503           Enable support for iWMMXt context switching at run time if
 504           running on a CPU that supports it.
 505
 506 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 507 config XSCALE_PMU
 508         bool
 509         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 510         default y
 511
 512 if !MMU
 513 source "arch/arm/Kconfig-nommu"
 514 endif
 515
 516 endmenu
 517
 518 source "arch/arm/common/Kconfig"
 519
 520 config FORCE_MAX_ZONEORDER
 521         int
 522         depends on SA1111
 523         default "9"
 524
 525 menu "Bus support"
 526
 527 config ARM_AMBA
 528         bool
 529
 530 config ISA
 531         bool
 532         help
 533           Find out whether you have ISA slots on your motherboard.  ISA is the
 534           name of a bus system, i.e. the way the CPU talks to the other stuff
 535           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 536           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 537           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 538
 539 # Select ISA DMA controller support
 540 config ISA_DMA
 541         bool
 542         select ISA_DMA_API
 543
 544 # Select ISA DMA interface
 545 config ISA_DMA_API
 546         bool
 547
 548 config PCI
 549         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 550         help
 551           Find out whether you have a PCI motherboard. PCI is the name of a
 552           bus system, i.e. the way the CPU talks to the other stuff inside
 553           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 554           VESA. If you have PCI, say Y, otherwise N.
 555
 556           The PCI-HOWTO, available from
 557           <http://www.tldp.org/docs.html#howto>, contains valuable
 558           information about which PCI hardware does work under Linux and which
 559           doesn't.
 560
 561 config PCI_SYSCALL
 562         def_bool PCI
 563
 564 # Select the host bridge type
 565 config PCI_HOST_VIA82C505
 566         bool
 567         depends on PCI && ARCH_SHARK
 568         default y
 569
 570 config PCI_HOST_ITE8152
 571         bool
 572         depends on PCI && MACH_ARMCORE
 573         default y
 574         select DMABOUNCE
 575
 576 source "drivers/pci/Kconfig"
 577
 578 source "drivers/pcmcia/Kconfig"
 579
 580 endmenu
 581
 582 menu "Kernel Features"
 583
 584 source "kernel/time/Kconfig"
 585
 586 config SMP
 587         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 588         depends on EXPERIMENTAL && REALVIEW_MPCORE
 589         help
 590           This enables support for systems with more than one CPU. If you have
 591           a system with only one CPU, like most personal computers, say N. If
 592           you have a system with more than one CPU, say Y.
 593
 594           If you say N here, the kernel will run on single and multiprocessor
 595           machines, but will use only one CPU of a multiprocessor machine. If
 596           you say Y here, the kernel will run on many, but not all, single
 597           processor machines. On a single processor machine, the kernel will
 598           run faster if you say N here.
 599
 600           See also the <file:Documentation/smp.txt>,
 601           <file:Documentation/i386/IO-APIC.txt>,
 602           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 603           <http://www.linuxdoc.org/docs.html#howto>.
 604
 605           If you don't know what to do here, say N.
 606
 607 config NR_CPUS
 608         int "Maximum number of CPUs (2-32)"
 609         range 2 32
 610         depends on SMP
 611         default "4"
 612
 613 config HOTPLUG_CPU
 614         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 615         depends on SMP && HOTPLUG && EXPERIMENTAL
 616         help
 617           Say Y here to experiment with turning CPUs off and on.  CPUs
 618           can be controlled through /sys/devices/system/cpu.
 619
 620 config LOCAL_TIMERS
 621         bool "Use local timer interrupts"
 622         depends on SMP && REALVIEW_MPCORE
 623         default y
 624         help
 625           Enable support for local timers on SMP platforms, rather then the
 626           legacy IPI broadcast method.  Local timers allows the system
 627           accounting to be spread across the timer interval, preventing a
 628           "thundering herd" at every timer tick.
 629
 630 config PREEMPT
 631         bool "Preemptible Kernel (EXPERIMENTAL)"
 632         depends on EXPERIMENTAL
 633         help
 634           This option reduces the latency of the kernel when reacting to
 635           real-time or interactive events by allowing a low priority process to
 636           be preempted even if it is in kernel mode executing a system call.
 637           This allows applications to run more reliably even when the system is
 638           under load.
 639
 640           Say Y here if you are building a kernel for a desktop, embedded
 641           or real-time system.  Say N if you are unsure.
 642
 643 config NO_IDLE_HZ
 644         bool "Dynamic tick timer"
 645         depends on !GENERIC_CLOCKEVENTS
 646         help
 647           Select this option if you want to disable continuous timer ticks
 648           and have them programmed to occur as required. This option saves
 649           power as the system can remain in idle state for longer.
 650
 651           By default dynamic tick is disabled during the boot, and can be
 652           manually enabled with:
 653
 654             echo 1 > /sys/devices/system/timer/timer0/dyn_tick
 655
 656           Alternatively, if you want dynamic tick automatically enabled
 657           during boot, pass "dyntick=enable" via the kernel command string.
 658
 659           Please note that dynamic tick may affect the accuracy of
 660           timekeeping on some platforms depending on the implementation.
 661           Currently at least OMAP, PXA2xx and SA11x0 platforms are known
 662           to have accurate timekeeping with dynamic tick.
 663
 664 config HZ
 665         int
 666         default 128 if ARCH_L7200
 667         default 200 if ARCH_EBSA110 || ARCH_S3C2410
 668         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
 669         default 100
 670
 671 config AEABI
 672         bool "Use the ARM EABI to compile the kernel"
 673         help
 674           This option allows for the kernel to be compiled using the latest
 675           ARM ABI (aka EABI).  This is only useful if you are using a user
 676           space environment that is also compiled with EABI.
 677
 678           Since there are major incompatibilities between the legacy ABI and
 679           EABI, especially with regard to structure member alignment, this
 680           option also changes the kernel syscall calling convention to
 681           disambiguate both ABIs and allow for backward compatibility support
 682           (selected with CONFIG_OABI_COMPAT).
 683
 684           To use this you need GCC version 4.0.0 or later.
 685
 686 config OABI_COMPAT
 687         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
 688         depends on AEABI && EXPERIMENTAL
 689         default y
 690         help
 691           This option preserves the old syscall interface along with the
 692           new (ARM EABI) one. It also provides a compatibility layer to
 693           intercept syscalls that have structure arguments which layout
 694           in memory differs between the legacy ABI and the new ARM EABI
 695           (only for non "thumb" binaries). This option adds a tiny
 696           overhead to all syscalls and produces a slightly larger kernel.
 697           If you know you'll be using only pure EABI user space then you
 698           can say N here. If this option is not selected and you attempt
 699           to execute a legacy ABI binary then the result will be
 700           UNPREDICTABLE (in fact it can be predicted that it won't work
 701           at all). If in doubt say Y.
 702
 703 config ARCH_DISCONTIGMEM_ENABLE
 704         bool
 705         default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
 706         help
 707           Say Y to support efficient handling of discontiguous physical memory,
 708           for architectures which are either NUMA (Non-Uniform Memory Access)
 709           or have huge holes in the physical address space for other reasons.
 710           See <file:Documentation/vm/numa> for more.
 711
 712 config NODES_SHIFT
 713         int
 714         default "4" if ARCH_LH7A40X
 715         default "2"
 716         depends on NEED_MULTIPLE_NODES
 717
 718 source "mm/Kconfig"
 719
 720 config LEDS
 721         bool "Timer and CPU usage LEDs"
 722         depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
 723                    ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
 724                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
 725                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
 726                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
 727                    ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
 728                    ARCH_KS8695
 729         help
 730           If you say Y here, the LEDs on your machine will be used
 731           to provide useful information about your current system status.
 732
 733           If you are compiling a kernel for a NetWinder or EBSA-285, you will
 734           be able to select which LEDs are active using the options below. If
 735           you are compiling a kernel for the EBSA-110 or the LART however, the
 736           red LED will simply flash regularly to indicate that the system is
 737           still functional. It is safe to say Y here if you have a CATS
 738           system, but the driver will do nothing.
 739
 740 config LEDS_TIMER
 741         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
 742                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
 743                             || MACH_OMAP_PERSEUS2
 744         depends on LEDS
 745         depends on !GENERIC_CLOCKEVENTS
 746         default y if ARCH_EBSA110
 747         help
 748           If you say Y here, one of the system LEDs (the green one on the
 749           NetWinder, the amber one on the EBSA285, or the red one on the LART)
 750           will flash regularly to indicate that the system is still
 751           operational. This is mainly useful to kernel hackers who are
 752           debugging unstable kernels.
 753
 754           The LART uses the same LED for both Timer LED and CPU usage LED
 755           functions. You may choose to use both, but the Timer LED function
 756           will overrule the CPU usage LED.
 757
 758 config LEDS_CPU
 759         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
 760                         !ARCH_OMAP) \
 761                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
 762                         || MACH_OMAP_PERSEUS2
 763         depends on LEDS
 764         help
 765           If you say Y here, the red LED will be used to give a good real
 766           time indication of CPU usage, by lighting whenever the idle task
 767           is not currently executing.
 768
 769           The LART uses the same LED for both Timer LED and CPU usage LED
 770           functions. You may choose to use both, but the Timer LED function
 771           will overrule the CPU usage LED.
 772
 773 config ALIGNMENT_TRAP
 774         bool
 775         depends on CPU_CP15_MMU
 776         default y if !ARCH_EBSA110
 777         help
 778           ARM processors cannot fetch/store information which is not
 779           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
 780           address divisible by 4. On 32-bit ARM processors, these non-aligned
 781           fetch/store instructions will be emulated in software if you say
 782           here, which has a severe performance impact. This is necessary for
 783           correct operation of some network protocols. With an IP-only
 784           configuration it is safe to say N, otherwise say Y.
 785
 786 endmenu
 787
 788 menu "Boot options"
 789
 790 # Compressed boot loader in ROM.  Yes, we really want to ask about
 791 # TEXT and BSS so we preserve their values in the config files.
 792 config ZBOOT_ROM_TEXT
 793         hex "Compressed ROM boot loader base address"
 794         default "0"
 795         help
 796           The physical address at which the ROM-able zImage is to be
 797           placed in the target.  Platforms which normally make use of
 798           ROM-able zImage formats normally set this to a suitable
 799           value in their defconfig file.
 800
 801           If ZBOOT_ROM is not enabled, this has no effect.
 802
 803 config ZBOOT_ROM_BSS
 804         hex "Compressed ROM boot loader BSS address"
 805         default "0"
 806         help
 807           The base address of an area of read/write memory in the target
 808           for the ROM-able zImage which must be available while the
 809           decompressor is running. It must be large enough to hold the
 810           entire decompressed kernel plus an additional 128 KiB.
 811           Platforms which normally make use of ROM-able zImage formats
 812           normally set this to a suitable value in their defconfig file.
 813
 814           If ZBOOT_ROM is not enabled, this has no effect.
 815
 816 config ZBOOT_ROM
 817         bool "Compressed boot loader in ROM/flash"
 818         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
 819         help
 820           Say Y here if you intend to execute your compressed kernel image
 821           (zImage) directly from ROM or flash.  If unsure, say N.
 822
 823 config CMDLINE
 824         string "Default kernel command string"
 825         default ""
 826         help
 827           On some architectures (EBSA110 and CATS), there is currently no way
 828           for the boot loader to pass arguments to the kernel. For these
 829           architectures, you should supply some command-line options at build
 830           time by entering them here. As a minimum, you should specify the
 831           memory size and the root device (e.g., mem=64M root=/dev/nfs).
 832
 833 config XIP_KERNEL
 834         bool "Kernel Execute-In-Place from ROM"
 835         depends on !ZBOOT_ROM
 836         help
 837           Execute-In-Place allows the kernel to run from non-volatile storage
 838           directly addressable by the CPU, such as NOR flash. This saves RAM
 839           space since the text section of the kernel is not loaded from flash
 840           to RAM.  Read-write sections, such as the data section and stack,
 841           are still copied to RAM.  The XIP kernel is not compressed since
 842           it has to run directly from flash, so it will take more space to
 843           store it.  The flash address used to link the kernel object files,
 844           and for storing it, is configuration dependent. Therefore, if you
 845           say Y here, you must know the proper physical address where to
 846           store the kernel image depending on your own flash memory usage.
 847
 848           Also note that the make target becomes "make xipImage" rather than
 849           "make zImage" or "make Image".  The final kernel binary to put in
 850           ROM memory will be arch/arm/boot/xipImage.
 851
 852           If unsure, say N.
 853
 854 config XIP_PHYS_ADDR
 855         hex "XIP Kernel Physical Location"
 856         depends on XIP_KERNEL
 857         default "0x00080000"
 858         help
 859           This is the physical address in your flash memory the kernel will
 860           be linked for and stored to.  This address is dependent on your
 861           own flash usage.
 862
 863 config KEXEC
 864         bool "Kexec system call (EXPERIMENTAL)"
 865         depends on EXPERIMENTAL
 866         help
 867           kexec is a system call that implements the ability to shutdown your
 868           current kernel, and to start another kernel.  It is like a reboot
 869           but it is independent of the system firmware.   And like a reboot
 870           you can start any kernel with it, not just Linux.
 871
 872           It is an ongoing process to be certain the hardware in a machine
 873           is properly shutdown, so do not be surprised if this code does not
 874           initially work for you.  It may help to enable device hotplugging
 875           support.
 876
 877 endmenu
 878
 879 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
 880
 881 menu "CPU Frequency scaling"
 882
 883 source "drivers/cpufreq/Kconfig"
 884
 885 config CPU_FREQ_SA1100
 886         bool
 887         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
 888         default y
 889
 890 config CPU_FREQ_SA1110
 891         bool
 892         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
 893         default y
 894
 895 config CPU_FREQ_INTEGRATOR
 896         tristate "CPUfreq driver for ARM Integrator CPUs"
 897         depends on ARCH_INTEGRATOR && CPU_FREQ
 898         default y
 899         help
 900           This enables the CPUfreq driver for ARM Integrator CPUs.
 901
 902           For details, take a look at <file:Documentation/cpu-freq>.
 903
 904           If in doubt, say Y.
 905
 906 config CPU_FREQ_IMX
 907         tristate "CPUfreq driver for i.MX CPUs"
 908         depends on ARCH_IMX && CPU_FREQ
 909         default n
 910         help
 911           This enables the CPUfreq driver for i.MX CPUs.
 912
 913           If in doubt, say N.
 914
 915 endmenu
 916
 917 endif
 918
 919 menu "Floating point emulation"
 920
 921 comment "At least one emulation must be selected"
 922
 923 config FPE_NWFPE
 924         bool "NWFPE math emulation"
 925         depends on !AEABI || OABI_COMPAT
 926         ---help---
 927           Say Y to include the NWFPE floating point emulator in the kernel.
 928           This is necessary to run most binaries. Linux does not currently
 929           support floating point hardware so you need to say Y here even if
 930           your machine has an FPA or floating point co-processor podule.
 931
 932           You may say N here if you are going to load the Acorn FPEmulator
 933           early in the bootup.
 934
 935 config FPE_NWFPE_XP
 936         bool "Support extended precision"
 937         depends on FPE_NWFPE
 938         help
 939           Say Y to include 80-bit support in the kernel floating-point
 940           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
 941           Note that gcc does not generate 80-bit operations by default,
 942           so in most cases this option only enlarges the size of the
 943           floating point emulator without any good reason.
 944
 945           You almost surely want to say N here.
 946
 947 config FPE_FASTFPE
 948         bool "FastFPE math emulation (EXPERIMENTAL)"
 949         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
 950         ---help---
 951           Say Y here to include the FAST floating point emulator in the kernel.
 952           This is an experimental much faster emulator which now also has full
 953           precision for the mantissa.  It does not support any exceptions.
 954           It is very simple, and approximately 3-6 times faster than NWFPE.
 955
 956           It should be sufficient for most programs.  It may be not suitable
 957           for scientific calculations, but you have to check this for yourself.
 958           If you do not feel you need a faster FP emulation you should better
 959           choose NWFPE.
 960
 961 config VFP
 962         bool "VFP-format floating point maths"
 963         depends on CPU_V6 || CPU_ARM926T || CPU_FEROCEON
 964         help
 965           Say Y to include VFP support code in the kernel. This is needed
 966           if your hardware includes a VFP unit.
 967
 968           Please see <file:Documentation/arm/VFP/release-notes.txt> for
 969           release notes and additional status information.
 970
 971           Say N if your target does not have VFP hardware.
 972
 973 endmenu
 974
 975 menu "Userspace binary formats"
 976
 977 source "fs/Kconfig.binfmt"
 978
 979 config ARTHUR
 980         tristate "RISC OS personality"
 981         depends on !AEABI
 982         help
 983           Say Y here to include the kernel code necessary if you want to run
 984           Acorn RISC OS/Arthur binaries under Linux. This code is still very
 985           experimental; if this sounds frightening, say N and sleep in peace.
 986           You can also say M here to compile this support as a module (which
 987           will be called arthur).
 988
 989 endmenu
 990
 991 menu "Power management options"
 992
 993 source "kernel/power/Kconfig"
 994
 995 endmenu
 996
 997 source "net/Kconfig"
 998
 999 menu "Device Drivers"
1000
1001 source "drivers/base/Kconfig"
1002
1003 source "drivers/connector/Kconfig"
1004
1005 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1006 source "drivers/mtd/Kconfig"
1007 endif
1008
1009 source "drivers/parport/Kconfig"
1010
1011 source "drivers/pnp/Kconfig"
1012
1013 source "drivers/block/Kconfig"
1014
1015 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1016
1017 source "drivers/misc/Kconfig"
1018
1019 if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
1020         || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
1021         || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
1022         || ARCH_IXP23XX
1023 source "drivers/ide/Kconfig"
1024 endif
1025
1026 source "drivers/scsi/Kconfig"
1027
1028 source "drivers/ata/Kconfig"
1029
1030 source "drivers/md/Kconfig"
1031
1032 source "drivers/message/fusion/Kconfig"
1033
1034 source "drivers/ieee1394/Kconfig"
1035
1036 source "drivers/message/i2o/Kconfig"
1037
1038 source "drivers/net/Kconfig"
1039
1040 source "drivers/isdn/Kconfig"
1041
1042 # input before char - char/joystick depends on it. As does USB.
1043
1044 source "drivers/input/Kconfig"
1045
1046 source "drivers/char/Kconfig"
1047
1048 source "drivers/i2c/Kconfig"
1049
1050 source "drivers/spi/Kconfig"
1051
1052 source "drivers/w1/Kconfig"
1053
1054 source "drivers/power/Kconfig"
1055
1056 source "drivers/hwmon/Kconfig"
1057
1058 source "drivers/watchdog/Kconfig"
1059
1060 source "drivers/ssb/Kconfig"
1061
1062 #source "drivers/l3/Kconfig"
1063
1064 source "drivers/mfd/Kconfig"
1065
1066 source "drivers/media/Kconfig"
1067
1068 source "drivers/video/Kconfig"
1069
1070 source "sound/Kconfig"
1071
1072 source "drivers/hid/Kconfig"
1073
1074 source "drivers/usb/Kconfig"
1075
1076 source "drivers/mmc/Kconfig"
1077
1078 source "drivers/leds/Kconfig"
1079
1080 source "drivers/rtc/Kconfig"
1081
1082 source "drivers/dma/Kconfig"
1083
1084 source "drivers/dca/Kconfig"
1085
1086 endmenu
1087
1088 source "fs/Kconfig"
1089
1090 source "arch/arm/Kconfig.instrumentation"
1091
1092 source "arch/arm/Kconfig.debug"
1093
1094 source "security/Kconfig"
1095
1096 source "crypto/Kconfig"
1097
1098 source "lib/Kconfig"