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_TIME
  25         bool
  26         default n
  27
  28 config MMU
  29         bool
  30         default y
  31
  32 config NO_IOPORT
  33         bool
  34         default n
  35
  36 config EISA
  37         bool
  38         ---help---
  39           The Extended Industry Standard Architecture (EISA) bus was
  40           developed as an open alternative to the IBM MicroChannel bus.
  41
  42           The EISA bus provided some of the features of the IBM MicroChannel
  43           bus while maintaining backward compatibility with cards made for
  44           the older ISA bus.  The EISA bus saw limited use between 1988 and
  45           1995 when it was made obsolete by the PCI bus.
  46
  47           Say Y here if you are building a kernel for an EISA-based machine.
  48
  49           Otherwise, say N.
  50
  51 config SBUS
  52         bool
  53
  54 config MCA
  55         bool
  56         help
  57           MicroChannel Architecture is found in some IBM PS/2 machines and
  58           laptops.  It is a bus system similar to PCI or ISA. See
  59           <file:Documentation/mca.txt> (and especially the web page given
  60           there) before attempting to build an MCA bus kernel.
  61
  62 config GENERIC_HARDIRQS
  63         bool
  64         default y
  65
  66 config TRACE_IRQFLAGS_SUPPORT
  67         bool
  68         default y
  69
  70 config HARDIRQS_SW_RESEND
  71         bool
  72         default y
  73
  74 config GENERIC_IRQ_PROBE
  75         bool
  76         default y
  77
  78 config RWSEM_GENERIC_SPINLOCK
  79         bool
  80         default y
  81
  82 config RWSEM_XCHGADD_ALGORITHM
  83         bool
  84
  85 config ARCH_HAS_ILOG2_U32
  86         bool
  87         default n
  88
  89 config ARCH_HAS_ILOG2_U64
  90         bool
  91         default n
  92
  93 config GENERIC_HWEIGHT
  94         bool
  95         default y
  96
  97 config GENERIC_CALIBRATE_DELAY
  98         bool
  99         default y
 100
 101 config GENERIC_BUST_SPINLOCK
 102         bool
 103
 104 config ARCH_MAY_HAVE_PC_FDC
 105         bool
 106
 107 config ZONE_DMA
 108         bool
 109         default y
 110
 111 config GENERIC_ISA_DMA
 112         bool
 113
 114 config FIQ
 115         bool
 116
 117 config ARCH_MTD_XIP
 118         bool
 119
 120 config VECTORS_BASE
 121         hex
 122         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 123         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 124         default 0x00000000
 125         help
 126           The base address of exception vectors.
 127
 128 source "init/Kconfig"
 129
 130 menu "System Type"
 131
 132 choice
 133         prompt "ARM system type"
 134         default ARCH_VERSATILE
 135
 136 config ARCH_AAEC2000
 137         bool "Agilent AAEC-2000 based"
 138         select ARM_AMBA
 139         help
 140           This enables support for systems based on the Agilent AAEC-2000
 141
 142 config ARCH_INTEGRATOR
 143         bool "ARM Ltd. Integrator family"
 144         select ARM_AMBA
 145         select ICST525
 146         help
 147           Support for ARM's Integrator platform.
 148
 149 config ARCH_REALVIEW
 150         bool "ARM Ltd. RealView family"
 151         select ARM_AMBA
 152         select ICST307
 153         help
 154           This enables support for ARM Ltd RealView boards.
 155
 156 config ARCH_VERSATILE
 157         bool "ARM Ltd. Versatile family"
 158         select ARM_AMBA
 159         select ARM_VIC
 160         select ICST307
 161         help
 162           This enables support for ARM Ltd Versatile board.
 163
 164 config ARCH_AT91
 165         bool "Atmel AT91"
 166         help
 167           This enables support for systems based on the Atmel AT91RM9200
 168           and AT91SAM9xxx processors.
 169
 170 config ARCH_CLPS7500
 171         bool "Cirrus CL-PS7500FE"
 172         select TIMER_ACORN
 173         select ISA
 174         help
 175           Support for the Cirrus Logic PS7500FE system-on-a-chip.
 176
 177 config ARCH_CLPS711X
 178         bool "Cirrus Logic CLPS711x/EP721x-based"
 179         help
 180           Support for Cirrus Logic 711x/721x based boards.
 181
 182 config ARCH_CO285
 183         bool "Co-EBSA285"
 184         select FOOTBRIDGE
 185         select FOOTBRIDGE_ADDIN
 186         help
 187           Support for Intel's EBSA285 companion chip.
 188
 189 config ARCH_EBSA110
 190         bool "EBSA-110"
 191         select ISA
 192         help
 193           This is an evaluation board for the StrongARM processor available
 194           from Digital. It has limited hardware on-board, including an
 195           Ethernet interface, two PCMCIA sockets, two serial ports and a
 196           parallel port.
 197
 198 config ARCH_EP93XX
 199         bool "EP93xx-based"
 200         select ARM_AMBA
 201         select ARM_VIC
 202         help
 203           This enables support for the Cirrus EP93xx series of CPUs.
 204
 205 config ARCH_FOOTBRIDGE
 206         bool "FootBridge"
 207         select FOOTBRIDGE
 208         help
 209           Support for systems based on the DC21285 companion chip
 210           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 211
 212 config ARCH_NETX
 213         bool "Hilscher NetX based"
 214         select ARM_VIC
 215         help
 216           This enables support for systems based on the Hilscher NetX Soc
 217
 218 config ARCH_H720X
 219         bool "Hynix HMS720x-based"
 220         select ISA_DMA_API
 221         help
 222           This enables support for systems based on the Hynix HMS720x
 223
 224 config ARCH_IMX
 225         bool "IMX"
 226         help
 227           Support for Motorola's i.MX family of processors (MX1, MXL).
 228
 229 config ARCH_IOP32X
 230         bool "IOP32x-based"
 231         depends on MMU
 232         select PLAT_IOP
 233         select PCI
 234         help
 235           Support for Intel's 80219 and IOP32X (XScale) family of
 236           processors.
 237
 238 config ARCH_IOP33X
 239         bool "IOP33x-based"
 240         depends on MMU
 241         select PLAT_IOP
 242         select PCI
 243         help
 244           Support for Intel's IOP33X (XScale) family of processors.
 245
 246 config ARCH_IOP13XX
 247         bool "IOP13xx-based"
 248         depends on MMU
 249         select PLAT_IOP
 250         select PCI
 251         help
 252           Support for Intel's IOP13XX (XScale) family of processors.
 253
 254 config ARCH_IXP4XX
 255         bool "IXP4xx-based"
 256         depends on MMU
 257         select GENERIC_TIME
 258         help
 259           Support for Intel's IXP4XX (XScale) family of processors.
 260
 261 config ARCH_IXP2000
 262         bool "IXP2400/2800-based"
 263         depends on MMU
 264         select PCI
 265         help
 266           Support for Intel's IXP2400/2800 (XScale) family of processors.
 267
 268 config ARCH_IXP23XX
 269         bool "IXP23XX-based"
 270         depends on MMU
 271         select PCI
 272         help
 273           Support for Intel's IXP23xx (XScale) family of processors.
 274
 275 config ARCH_L7200
 276         bool "LinkUp-L7200"
 277         select FIQ
 278         help
 279           Say Y here if you intend to run this kernel on a LinkUp Systems
 280           L7200 Software Development Board which uses an ARM720T processor.
 281           Information on this board can be obtained at:
 282
 283           <http://www.linkupsys.com/>
 284
 285           If you have any questions or comments about the Linux kernel port
 286           to this board, send e-mail to <sjhill@cotw.com>.
 287
 288 config ARCH_NS9XXX
 289         bool "NetSilicon NS9xxx"
 290         help
 291           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 292           System.
 293
 294           <http://www.digi.com/products/microprocessors/index.jsp>
 295
 296 config ARCH_PNX4008
 297         bool "Philips Nexperia PNX4008 Mobile"
 298         help
 299           This enables support for Philips PNX4008 mobile platform.
 300
 301 config ARCH_PXA
 302         bool "PXA2xx-based"
 303         depends on MMU
 304         select ARCH_MTD_XIP
 305         select GENERIC_TIME
 306         help
 307           Support for Intel's PXA2XX processor line.
 308
 309 config ARCH_RPC
 310         bool "RiscPC"
 311         select ARCH_ACORN
 312         select FIQ
 313         select TIMER_ACORN
 314         select ARCH_MAY_HAVE_PC_FDC
 315         select ISA_DMA_API
 316         select NO_IOPORT
 317         help
 318           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 319           CD-ROM interface, serial and parallel port, and the floppy drive.
 320
 321 config ARCH_SA1100
 322         bool "SA1100-based"
 323         select ISA
 324         select ARCH_DISCONTIGMEM_ENABLE
 325         select ARCH_MTD_XIP
 326         help
 327           Support for StrongARM 11x0 based boards.
 328
 329 config ARCH_S3C2410
 330         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 331         help
 332           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 333           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 334           the Samsung SMDK2410 development board (and derivatives).
 335
 336 config ARCH_SHARK
 337         bool "Shark"
 338         select ISA
 339         select ISA_DMA
 340         select PCI
 341         help
 342           Support for the StrongARM based Digital DNARD machine, also known
 343           as "Shark" (<http://www.shark-linux.de/shark.html>).
 344
 345 config ARCH_LH7A40X
 346         bool "Sharp LH7A40X"
 347         help
 348           Say Y here for systems based on one of the Sharp LH7A40X
 349           System on a Chip processors.  These CPUs include an ARM922T
 350           core with a wide array of integrated devices for
 351           hand-held and low-power applications.
 352
 353 config ARCH_OMAP
 354         bool "TI OMAP"
 355         help
 356           Support for TI's OMAP platform (OMAP1 and OMAP2).
 357
 358 endchoice
 359
 360 source "arch/arm/mach-clps711x/Kconfig"
 361
 362 source "arch/arm/mach-ep93xx/Kconfig"
 363
 364 source "arch/arm/mach-footbridge/Kconfig"
 365
 366 source "arch/arm/mach-integrator/Kconfig"
 367
 368 source "arch/arm/mach-iop32x/Kconfig"
 369
 370 source "arch/arm/mach-iop33x/Kconfig"
 371
 372 source "arch/arm/mach-iop13xx/Kconfig"
 373
 374 source "arch/arm/mach-ixp4xx/Kconfig"
 375
 376 source "arch/arm/mach-ixp2000/Kconfig"
 377
 378 source "arch/arm/mach-ixp23xx/Kconfig"
 379
 380 source "arch/arm/mach-pxa/Kconfig"
 381
 382 source "arch/arm/mach-sa1100/Kconfig"
 383
 384 source "arch/arm/plat-omap/Kconfig"
 385
 386 source "arch/arm/mach-omap1/Kconfig"
 387
 388 source "arch/arm/mach-omap2/Kconfig"
 389
 390 source "arch/arm/plat-s3c24xx/Kconfig"
 391
 392 if ARCH_S3C2410
 393 source "arch/arm/mach-s3c2400/Kconfig"
 394 source "arch/arm/mach-s3c2410/Kconfig"
 395 source "arch/arm/mach-s3c2412/Kconfig"
 396 source "arch/arm/mach-s3c2440/Kconfig"
 397 source "arch/arm/mach-s3c2442/Kconfig"
 398 source "arch/arm/mach-s3c2443/Kconfig"
 399 endif
 400
 401 source "arch/arm/mach-lh7a40x/Kconfig"
 402
 403 source "arch/arm/mach-imx/Kconfig"
 404
 405 source "arch/arm/mach-h720x/Kconfig"
 406
 407 source "arch/arm/mach-versatile/Kconfig"
 408
 409 source "arch/arm/mach-aaec2000/Kconfig"
 410
 411 source "arch/arm/mach-realview/Kconfig"
 412
 413 source "arch/arm/mach-at91/Kconfig"
 414
 415 source "arch/arm/mach-netx/Kconfig"
 416
 417 source "arch/arm/mach-ns9xxx/Kconfig"
 418
 419 # Definitions to make life easier
 420 config ARCH_ACORN
 421         bool
 422
 423 config PLAT_IOP
 424         bool
 425
 426 source arch/arm/mm/Kconfig
 427
 428 config IWMMXT
 429         bool "Enable iWMMXt support"
 430         depends CPU_XSCALE || CPU_XSC3
 431         default y if PXA27x
 432         help
 433           Enable support for iWMMXt context switching at run time if
 434           running on a CPU that supports it.
 435
 436 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 437 config XSCALE_PMU
 438         bool
 439         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 440         default y
 441
 442 if !MMU
 443 source "arch/arm/Kconfig-nommu"
 444 endif
 445
 446 endmenu
 447
 448 source "arch/arm/common/Kconfig"
 449
 450 config FORCE_MAX_ZONEORDER
 451         int
 452         depends on SA1111
 453         default "9"
 454
 455 menu "Bus support"
 456
 457 config ARM_AMBA
 458         bool
 459
 460 config ISA
 461         bool
 462         help
 463           Find out whether you have ISA slots on your motherboard.  ISA is the
 464           name of a bus system, i.e. the way the CPU talks to the other stuff
 465           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 466           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 467           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 468
 469 # Select ISA DMA controller support
 470 config ISA_DMA
 471         bool
 472         select ISA_DMA_API
 473
 474 # Select ISA DMA interface
 475 config ISA_DMA_API
 476         bool
 477
 478 config PCI
 479         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
 480         help
 481           Find out whether you have a PCI motherboard. PCI is the name of a
 482           bus system, i.e. the way the CPU talks to the other stuff inside
 483           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 484           VESA. If you have PCI, say Y, otherwise N.
 485
 486           The PCI-HOWTO, available from
 487           <http://www.tldp.org/docs.html#howto>, contains valuable
 488           information about which PCI hardware does work under Linux and which
 489           doesn't.
 490
 491 # Select the host bridge type
 492 config PCI_HOST_VIA82C505
 493         bool
 494         depends on PCI && ARCH_SHARK
 495         default y
 496
 497 source "drivers/pci/Kconfig"
 498
 499 source "drivers/pcmcia/Kconfig"
 500
 501 endmenu
 502
 503 menu "Kernel Features"
 504
 505 config SMP
 506         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 507         depends on EXPERIMENTAL && REALVIEW_MPCORE
 508         help
 509           This enables support for systems with more than one CPU. If you have
 510           a system with only one CPU, like most personal computers, say N. If
 511           you have a system with more than one CPU, say Y.
 512
 513           If you say N here, the kernel will run on single and multiprocessor
 514           machines, but will use only one CPU of a multiprocessor machine. If
 515           you say Y here, the kernel will run on many, but not all, single
 516           processor machines. On a single processor machine, the kernel will
 517           run faster if you say N here.
 518
 519           See also the <file:Documentation/smp.txt>,
 520           <file:Documentation/i386/IO-APIC.txt>,
 521           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 522           <http://www.linuxdoc.org/docs.html#howto>.
 523
 524           If you don't know what to do here, say N.
 525
 526 config NR_CPUS
 527         int "Maximum number of CPUs (2-32)"
 528         range 2 32
 529         depends on SMP
 530         default "4"
 531
 532 config HOTPLUG_CPU
 533         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 534         depends on SMP && HOTPLUG && EXPERIMENTAL
 535         help
 536           Say Y here to experiment with turning CPUs off and on.  CPUs
 537           can be controlled through /sys/devices/system/cpu.
 538
 539 config LOCAL_TIMERS
 540         bool "Use local timer interrupts"
 541         depends on SMP && REALVIEW_MPCORE
 542         default y
 543         help
 544           Enable support for local timers on SMP platforms, rather then the
 545           legacy IPI broadcast method.  Local timers allows the system
 546           accounting to be spread across the timer interval, preventing a
 547           "thundering herd" at every timer tick.
 548
 549 config PREEMPT
 550         bool "Preemptible Kernel (EXPERIMENTAL)"
 551         depends on EXPERIMENTAL
 552         help
 553           This option reduces the latency of the kernel when reacting to
 554           real-time or interactive events by allowing a low priority process to
 555           be preempted even if it is in kernel mode executing a system call.
 556           This allows applications to run more reliably even when the system is
 557           under load.
 558
 559           Say Y here if you are building a kernel for a desktop, embedded
 560           or real-time system.  Say N if you are unsure.
 561
 562 config NO_IDLE_HZ
 563         bool "Dynamic tick timer"
 564         help
 565           Select this option if you want to disable continuous timer ticks
 566           and have them programmed to occur as required. This option saves
 567           power as the system can remain in idle state for longer.
 568
 569           By default dynamic tick is disabled during the boot, and can be
 570           manually enabled with:
 571
 572             echo 1 > /sys/devices/system/timer/timer0/dyn_tick
 573
 574           Alternatively, if you want dynamic tick automatically enabled
 575           during boot, pass "dyntick=enable" via the kernel command string.
 576
 577           Please note that dynamic tick may affect the accuracy of
 578           timekeeping on some platforms depending on the implementation.
 579           Currently at least OMAP, PXA2xx and SA11x0 platforms are known
 580           to have accurate timekeeping with dynamic tick.
 581
 582 config HZ
 583         int
 584         default 128 if ARCH_L7200
 585         default 200 if ARCH_EBSA110 || ARCH_S3C2410
 586         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
 587         default 100
 588
 589 config AEABI
 590         bool "Use the ARM EABI to compile the kernel"
 591         help
 592           This option allows for the kernel to be compiled using the latest
 593           ARM ABI (aka EABI).  This is only useful if you are using a user
 594           space environment that is also compiled with EABI.
 595
 596           Since there are major incompatibilities between the legacy ABI and
 597           EABI, especially with regard to structure member alignment, this
 598           option also changes the kernel syscall calling convention to
 599           disambiguate both ABIs and allow for backward compatibility support
 600           (selected with CONFIG_OABI_COMPAT).
 601
 602           To use this you need GCC version 4.0.0 or later.
 603
 604 config OABI_COMPAT
 605         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
 606         depends on AEABI && EXPERIMENTAL
 607         default y
 608         help
 609           This option preserves the old syscall interface along with the
 610           new (ARM EABI) one. It also provides a compatibility layer to
 611           intercept syscalls that have structure arguments which layout
 612           in memory differs between the legacy ABI and the new ARM EABI
 613           (only for non "thumb" binaries). This option adds a tiny
 614           overhead to all syscalls and produces a slightly larger kernel.
 615           If you know you'll be using only pure EABI user space then you
 616           can say N here. If this option is not selected and you attempt
 617           to execute a legacy ABI binary then the result will be
 618           UNPREDICTABLE (in fact it can be predicted that it won't work
 619           at all). If in doubt say Y.
 620
 621 config ARCH_DISCONTIGMEM_ENABLE
 622         bool
 623         default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
 624         help
 625           Say Y to support efficient handling of discontiguous physical memory,
 626           for architectures which are either NUMA (Non-Uniform Memory Access)
 627           or have huge holes in the physical address space for other reasons.
 628           See <file:Documentation/vm/numa> for more.
 629
 630 config NODES_SHIFT
 631         int
 632         default "4" if ARCH_LH7A40X
 633         default "2"
 634         depends on NEED_MULTIPLE_NODES
 635
 636 source "mm/Kconfig"
 637
 638 config LEDS
 639         bool "Timer and CPU usage LEDs"
 640         depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
 641                    ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
 642                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
 643                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
 644                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
 645                    ARCH_AT91 || MACH_TRIZEPS4
 646         help
 647           If you say Y here, the LEDs on your machine will be used
 648           to provide useful information about your current system status.
 649
 650           If you are compiling a kernel for a NetWinder or EBSA-285, you will
 651           be able to select which LEDs are active using the options below. If
 652           you are compiling a kernel for the EBSA-110 or the LART however, the
 653           red LED will simply flash regularly to indicate that the system is
 654           still functional. It is safe to say Y here if you have a CATS
 655           system, but the driver will do nothing.
 656
 657 config LEDS_TIMER
 658         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
 659                             MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
 660         depends on LEDS
 661         default y if ARCH_EBSA110
 662         help
 663           If you say Y here, one of the system LEDs (the green one on the
 664           NetWinder, the amber one on the EBSA285, or the red one on the LART)
 665           will flash regularly to indicate that the system is still
 666           operational. This is mainly useful to kernel hackers who are
 667           debugging unstable kernels.
 668
 669           The LART uses the same LED for both Timer LED and CPU usage LED
 670           functions. You may choose to use both, but the Timer LED function
 671           will overrule the CPU usage LED.
 672
 673 config LEDS_CPU
 674         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
 675                         !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
 676         depends on LEDS
 677         help
 678           If you say Y here, the red LED will be used to give a good real
 679           time indication of CPU usage, by lighting whenever the idle task
 680           is not currently executing.
 681
 682           The LART uses the same LED for both Timer LED and CPU usage LED
 683           functions. You may choose to use both, but the Timer LED function
 684           will overrule the CPU usage LED.
 685
 686 config ALIGNMENT_TRAP
 687         bool
 688         depends on CPU_CP15_MMU
 689         default y if !ARCH_EBSA110
 690         help
 691           ARM processors cannot fetch/store information which is not
 692           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
 693           address divisible by 4. On 32-bit ARM processors, these non-aligned
 694           fetch/store instructions will be emulated in software if you say
 695           here, which has a severe performance impact. This is necessary for
 696           correct operation of some network protocols. With an IP-only
 697           configuration it is safe to say N, otherwise say Y.
 698
 699 endmenu
 700
 701 menu "Boot options"
 702
 703 # Compressed boot loader in ROM.  Yes, we really want to ask about
 704 # TEXT and BSS so we preserve their values in the config files.
 705 config ZBOOT_ROM_TEXT
 706         hex "Compressed ROM boot loader base address"
 707         default "0"
 708         help
 709           The physical address at which the ROM-able zImage is to be
 710           placed in the target.  Platforms which normally make use of
 711           ROM-able zImage formats normally set this to a suitable
 712           value in their defconfig file.
 713
 714           If ZBOOT_ROM is not enabled, this has no effect.
 715
 716 config ZBOOT_ROM_BSS
 717         hex "Compressed ROM boot loader BSS address"
 718         default "0"
 719         help
 720           The base address of an area of read/write memory in the target
 721           for the ROM-able zImage which must be available while the
 722           decompressor is running. It must be large enough to hold the
 723           entire decompressed kernel plus an additional 128 KiB.
 724           Platforms which normally make use of ROM-able zImage formats
 725           normally set this to a suitable value in their defconfig file.
 726
 727           If ZBOOT_ROM is not enabled, this has no effect.
 728
 729 config ZBOOT_ROM
 730         bool "Compressed boot loader in ROM/flash"
 731         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
 732         help
 733           Say Y here if you intend to execute your compressed kernel image
 734           (zImage) directly from ROM or flash.  If unsure, say N.
 735
 736 config CMDLINE
 737         string "Default kernel command string"
 738         default ""
 739         help
 740           On some architectures (EBSA110 and CATS), there is currently no way
 741           for the boot loader to pass arguments to the kernel. For these
 742           architectures, you should supply some command-line options at build
 743           time by entering them here. As a minimum, you should specify the
 744           memory size and the root device (e.g., mem=64M root=/dev/nfs).
 745
 746 config XIP_KERNEL
 747         bool "Kernel Execute-In-Place from ROM"
 748         depends on !ZBOOT_ROM
 749         help
 750           Execute-In-Place allows the kernel to run from non-volatile storage
 751           directly addressable by the CPU, such as NOR flash. This saves RAM
 752           space since the text section of the kernel is not loaded from flash
 753           to RAM.  Read-write sections, such as the data section and stack,
 754           are still copied to RAM.  The XIP kernel is not compressed since
 755           it has to run directly from flash, so it will take more space to
 756           store it.  The flash address used to link the kernel object files,
 757           and for storing it, is configuration dependent. Therefore, if you
 758           say Y here, you must know the proper physical address where to
 759           store the kernel image depending on your own flash memory usage.
 760
 761           Also note that the make target becomes "make xipImage" rather than
 762           "make zImage" or "make Image".  The final kernel binary to put in
 763           ROM memory will be arch/arm/boot/xipImage.
 764
 765           If unsure, say N.
 766
 767 config XIP_PHYS_ADDR
 768         hex "XIP Kernel Physical Location"
 769         depends on XIP_KERNEL
 770         default "0x00080000"
 771         help
 772           This is the physical address in your flash memory the kernel will
 773           be linked for and stored to.  This address is dependent on your
 774           own flash usage.
 775
 776 config KEXEC
 777         bool "Kexec system call (EXPERIMENTAL)"
 778         depends on EXPERIMENTAL
 779         help
 780           kexec is a system call that implements the ability to shutdown your
 781           current kernel, and to start another kernel.  It is like a reboot
 782           but it is indepedent of the system firmware.   And like a reboot
 783           you can start any kernel with it, not just Linux.
 784
 785           It is an ongoing process to be certain the hardware in a machine
 786           is properly shutdown, so do not be surprised if this code does not
 787           initially work for you.  It may help to enable device hotplugging
 788           support.
 789
 790 endmenu
 791
 792 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
 793
 794 menu "CPU Frequency scaling"
 795
 796 source "drivers/cpufreq/Kconfig"
 797
 798 config CPU_FREQ_SA1100
 799         bool
 800         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
 801         default y
 802
 803 config CPU_FREQ_SA1110
 804         bool
 805         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
 806         default y
 807
 808 config CPU_FREQ_INTEGRATOR
 809         tristate "CPUfreq driver for ARM Integrator CPUs"
 810         depends on ARCH_INTEGRATOR && CPU_FREQ
 811         default y
 812         help
 813           This enables the CPUfreq driver for ARM Integrator CPUs.
 814
 815           For details, take a look at <file:Documentation/cpu-freq>.
 816
 817           If in doubt, say Y.
 818
 819 config CPU_FREQ_IMX
 820         tristate "CPUfreq driver for i.MX CPUs"
 821         depends on ARCH_IMX && CPU_FREQ
 822         default n
 823         help
 824           This enables the CPUfreq driver for i.MX CPUs.
 825
 826           If in doubt, say N.
 827
 828 endmenu
 829
 830 endif
 831
 832 menu "Floating point emulation"
 833
 834 comment "At least one emulation must be selected"
 835
 836 config FPE_NWFPE
 837         bool "NWFPE math emulation"
 838         depends on !AEABI || OABI_COMPAT
 839         ---help---
 840           Say Y to include the NWFPE floating point emulator in the kernel.
 841           This is necessary to run most binaries. Linux does not currently
 842           support floating point hardware so you need to say Y here even if
 843           your machine has an FPA or floating point co-processor podule.
 844
 845           You may say N here if you are going to load the Acorn FPEmulator
 846           early in the bootup.
 847
 848 config FPE_NWFPE_XP
 849         bool "Support extended precision"
 850         depends on FPE_NWFPE
 851         help
 852           Say Y to include 80-bit support in the kernel floating-point
 853           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
 854           Note that gcc does not generate 80-bit operations by default,
 855           so in most cases this option only enlarges the size of the
 856           floating point emulator without any good reason.
 857
 858           You almost surely want to say N here.
 859
 860 config FPE_FASTFPE
 861         bool "FastFPE math emulation (EXPERIMENTAL)"
 862         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
 863         ---help---
 864           Say Y here to include the FAST floating point emulator in the kernel.
 865           This is an experimental much faster emulator which now also has full
 866           precision for the mantissa.  It does not support any exceptions.
 867           It is very simple, and approximately 3-6 times faster than NWFPE.
 868
 869           It should be sufficient for most programs.  It may be not suitable
 870           for scientific calculations, but you have to check this for yourself.
 871           If you do not feel you need a faster FP emulation you should better
 872           choose NWFPE.
 873
 874 config VFP
 875         bool "VFP-format floating point maths"
 876         depends on CPU_V6 || CPU_ARM926T
 877         help
 878           Say Y to include VFP support code in the kernel. This is needed
 879           if your hardware includes a VFP unit.
 880
 881           Please see <file:Documentation/arm/VFP/release-notes.txt> for
 882           release notes and additional status information.
 883
 884           Say N if your target does not have VFP hardware.
 885
 886 endmenu
 887
 888 menu "Userspace binary formats"
 889
 890 source "fs/Kconfig.binfmt"
 891
 892 config ARTHUR
 893         tristate "RISC OS personality"
 894         depends on !AEABI
 895         help
 896           Say Y here to include the kernel code necessary if you want to run
 897           Acorn RISC OS/Arthur binaries under Linux. This code is still very
 898           experimental; if this sounds frightening, say N and sleep in peace.
 899           You can also say M here to compile this support as a module (which
 900           will be called arthur).
 901
 902 endmenu
 903
 904 menu "Power management options"
 905
 906 source "kernel/power/Kconfig"
 907
 908 endmenu
 909
 910 source "net/Kconfig"
 911
 912 menu "Device Drivers"
 913
 914 source "drivers/base/Kconfig"
 915
 916 source "drivers/connector/Kconfig"
 917
 918 if ALIGNMENT_TRAP || !CPU_CP15_MMU
 919 source "drivers/mtd/Kconfig"
 920 endif
 921
 922 source "drivers/parport/Kconfig"
 923
 924 source "drivers/pnp/Kconfig"
 925
 926 source "drivers/block/Kconfig"
 927
 928 source "drivers/acorn/block/Kconfig"
 929
 930 if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
 931         || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
 932         || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
 933         || ARCH_IXP23XX
 934 source "drivers/ide/Kconfig"
 935 endif
 936
 937 source "drivers/scsi/Kconfig"
 938
 939 source "drivers/ata/Kconfig"
 940
 941 source "drivers/md/Kconfig"
 942
 943 source "drivers/message/fusion/Kconfig"
 944
 945 source "drivers/ieee1394/Kconfig"
 946
 947 source "drivers/message/i2o/Kconfig"
 948
 949 source "drivers/net/Kconfig"
 950
 951 source "drivers/isdn/Kconfig"
 952
 953 # input before char - char/joystick depends on it. As does USB.
 954
 955 source "drivers/input/Kconfig"
 956
 957 source "drivers/char/Kconfig"
 958
 959 source "drivers/i2c/Kconfig"
 960
 961 source "drivers/spi/Kconfig"
 962
 963 source "drivers/w1/Kconfig"
 964
 965 source "drivers/hwmon/Kconfig"
 966
 967 #source "drivers/l3/Kconfig"
 968
 969 source "drivers/misc/Kconfig"
 970
 971 source "drivers/mfd/Kconfig"
 972
 973 source "drivers/leds/Kconfig"
 974
 975 source "drivers/media/Kconfig"
 976
 977 source "drivers/video/Kconfig"
 978
 979 source "sound/Kconfig"
 980
 981 source "drivers/hid/Kconfig"
 982
 983 source "drivers/usb/Kconfig"
 984
 985 source "drivers/mmc/Kconfig"
 986
 987 source "drivers/rtc/Kconfig"
 988
 989 endmenu
 990
 991 source "fs/Kconfig"
 992
 993 source "arch/arm/oprofile/Kconfig"
 994
 995 source "arch/arm/Kconfig.debug"
 996
 997 source "security/Kconfig"
 998
 999 source "crypto/Kconfig"
1000
1001 source "lib/Kconfig"