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 HAVE_AOUT
  12         select HAVE_IDE
  13         select RTC_LIB
  14         select SYS_SUPPORTS_APM_EMULATION
  15         select HAVE_OPROFILE
  16         select HAVE_ARCH_KGDB
  17         select HAVE_KPROBES if (!XIP_KERNEL)
  18         select HAVE_KRETPROBES if (HAVE_KPROBES)
  19         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  20         select HAVE_GENERIC_DMA_COHERENT
  21         help
  22           The ARM series is a line of low-power-consumption RISC chip designs
  23           licensed by ARM Ltd and targeted at embedded applications and
  24           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  25           manufactured, but legacy ARM-based PC hardware remains popular in
  26           Europe.  There is an ARM Linux project with a web page at
  27           <http://www.arm.linux.org.uk/>.
  28
  29 config HAVE_PWM
  30         bool
  31
  32 config SYS_SUPPORTS_APM_EMULATION
  33         bool
  34
  35 config GENERIC_GPIO
  36         bool
  37
  38 config GENERIC_TIME
  39         bool
  40
  41 config GENERIC_CLOCKEVENTS
  42         bool
  43
  44 config GENERIC_CLOCKEVENTS_BROADCAST
  45         bool
  46         depends on GENERIC_CLOCKEVENTS
  47         default y if SMP && !LOCAL_TIMERS
  48
  49 config MMU
  50         bool
  51         default y
  52
  53 config NO_IOPORT
  54         bool
  55
  56 config EISA
  57         bool
  58         ---help---
  59           The Extended Industry Standard Architecture (EISA) bus was
  60           developed as an open alternative to the IBM MicroChannel bus.
  61
  62           The EISA bus provided some of the features of the IBM MicroChannel
  63           bus while maintaining backward compatibility with cards made for
  64           the older ISA bus.  The EISA bus saw limited use between 1988 and
  65           1995 when it was made obsolete by the PCI bus.
  66
  67           Say Y here if you are building a kernel for an EISA-based machine.
  68
  69           Otherwise, say N.
  70
  71 config SBUS
  72         bool
  73
  74 config MCA
  75         bool
  76         help
  77           MicroChannel Architecture is found in some IBM PS/2 machines and
  78           laptops.  It is a bus system similar to PCI or ISA. See
  79           <file:Documentation/mca.txt> (and especially the web page given
  80           there) before attempting to build an MCA bus kernel.
  81
  82 config GENERIC_HARDIRQS
  83         bool
  84         default y
  85
  86 config STACKTRACE_SUPPORT
  87         bool
  88         default y
  89
  90 config HAVE_LATENCYTOP_SUPPORT
  91         bool
  92         depends on !SMP
  93         default y
  94
  95 config LOCKDEP_SUPPORT
  96         bool
  97         default y
  98
  99 config TRACE_IRQFLAGS_SUPPORT
 100         bool
 101         default y
 102
 103 config HARDIRQS_SW_RESEND
 104         bool
 105         default y
 106
 107 config GENERIC_IRQ_PROBE
 108         bool
 109         default y
 110
 111 config GENERIC_LOCKBREAK
 112         bool
 113         default y
 114         depends on SMP && PREEMPT
 115
 116 config RWSEM_GENERIC_SPINLOCK
 117         bool
 118         default y
 119
 120 config RWSEM_XCHGADD_ALGORITHM
 121         bool
 122
 123 config ARCH_HAS_ILOG2_U32
 124         bool
 125
 126 config ARCH_HAS_ILOG2_U64
 127         bool
 128
 129 config GENERIC_HWEIGHT
 130         bool
 131         default y
 132
 133 config GENERIC_CALIBRATE_DELAY
 134         bool
 135         default y
 136
 137 config ARCH_MAY_HAVE_PC_FDC
 138         bool
 139
 140 config ZONE_DMA
 141         bool
 142
 143 config GENERIC_ISA_DMA
 144         bool
 145
 146 config FIQ
 147         bool
 148
 149 config ARCH_MTD_XIP
 150         bool
 151
 152 config GENERIC_HARDIRQS_NO__DO_IRQ
 153         def_bool y
 154
 155 if OPROFILE
 156
 157 config OPROFILE_ARMV6
 158         def_bool y
 159         depends on CPU_V6 && !SMP
 160         select OPROFILE_ARM11_CORE
 161
 162 config OPROFILE_MPCORE
 163         def_bool y
 164         depends on CPU_V6 && SMP
 165         select OPROFILE_ARM11_CORE
 166
 167 config OPROFILE_ARM11_CORE
 168         bool
 169
 170 config OPROFILE_ARMV7
 171         def_bool y
 172         depends on CPU_V7 && !SMP
 173         bool
 174
 175 endif
 176
 177 config VECTORS_BASE
 178         hex
 179         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 180         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 181         default 0x00000000
 182         help
 183           The base address of exception vectors.
 184
 185 source "init/Kconfig"
 186
 187 source "kernel/Kconfig.freezer"
 188
 189 menu "System Type"
 190
 191 choice
 192         prompt "ARM system type"
 193         default ARCH_VERSATILE
 194
 195 config ARCH_AAEC2000
 196         bool "Agilent AAEC-2000 based"
 197         select CPU_ARM920T
 198         select ARM_AMBA
 199         select HAVE_CLK
 200         help
 201           This enables support for systems based on the Agilent AAEC-2000
 202
 203 config ARCH_INTEGRATOR
 204         bool "ARM Ltd. Integrator family"
 205         select ARM_AMBA
 206         select HAVE_CLK
 207         select COMMON_CLKDEV
 208         select ICST525
 209         help
 210           Support for ARM's Integrator platform.
 211
 212 config ARCH_REALVIEW
 213         bool "ARM Ltd. RealView family"
 214         select ARM_AMBA
 215         select HAVE_CLK
 216         select COMMON_CLKDEV
 217         select ICST307
 218         select GENERIC_TIME
 219         select GENERIC_CLOCKEVENTS
 220         select ARCH_WANT_OPTIONAL_GPIOLIB
 221         help
 222           This enables support for ARM Ltd RealView boards.
 223
 224 config ARCH_VERSATILE
 225         bool "ARM Ltd. Versatile family"
 226         select ARM_AMBA
 227         select ARM_VIC
 228         select HAVE_CLK
 229         select COMMON_CLKDEV
 230         select ICST307
 231         select GENERIC_TIME
 232         select GENERIC_CLOCKEVENTS
 233         select ARCH_WANT_OPTIONAL_GPIOLIB
 234         help
 235           This enables support for ARM Ltd Versatile board.
 236
 237 config ARCH_AT91
 238         bool "Atmel AT91"
 239         select GENERIC_GPIO
 240         select ARCH_REQUIRE_GPIOLIB
 241         select HAVE_CLK
 242         help
 243           This enables support for systems based on the Atmel AT91RM9200,
 244           AT91SAM9 and AT91CAP9 processors.
 245
 246 config ARCH_CLPS711X
 247         bool "Cirrus Logic CLPS711x/EP721x-based"
 248         select CPU_ARM720T
 249         help
 250           Support for Cirrus Logic 711x/721x based boards.
 251
 252 config ARCH_GEMINI
 253         bool "Cortina Systems Gemini"
 254         select CPU_FA526
 255         select GENERIC_GPIO
 256         select ARCH_REQUIRE_GPIOLIB
 257         help
 258           Support for the Cortina Systems Gemini family SoCs
 259
 260 config ARCH_EBSA110
 261         bool "EBSA-110"
 262         select CPU_SA110
 263         select ISA
 264         select NO_IOPORT
 265         help
 266           This is an evaluation board for the StrongARM processor available
 267           from Digital. It has limited hardware on-board, including an
 268           Ethernet interface, two PCMCIA sockets, two serial ports and a
 269           parallel port.
 270
 271 config ARCH_EP93XX
 272         bool "EP93xx-based"
 273         select CPU_ARM920T
 274         select ARM_AMBA
 275         select ARM_VIC
 276         select GENERIC_GPIO
 277         select HAVE_CLK
 278         select COMMON_CLKDEV
 279         select ARCH_REQUIRE_GPIOLIB
 280         select ARCH_HAS_HOLES_MEMORYMODEL
 281         help
 282           This enables support for the Cirrus EP93xx series of CPUs.
 283
 284 config ARCH_FOOTBRIDGE
 285         bool "FootBridge"
 286         select CPU_SA110
 287         select FOOTBRIDGE
 288         help
 289           Support for systems based on the DC21285 companion chip
 290           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 291
 292 config ARCH_MXC
 293         bool "Freescale MXC/iMX-based"
 294         select GENERIC_TIME
 295         select GENERIC_CLOCKEVENTS
 296         select ARCH_MTD_XIP
 297         select GENERIC_GPIO
 298         select ARCH_REQUIRE_GPIOLIB
 299         select HAVE_CLK
 300         help
 301           Support for Freescale MXC/iMX-based family of processors
 302
 303 config ARCH_STMP3XXX
 304         bool "Freescale STMP3xxx"
 305         select CPU_ARM926T
 306         select HAVE_CLK
 307         select COMMON_CLKDEV
 308         select ARCH_REQUIRE_GPIOLIB
 309         select GENERIC_TIME
 310         select GENERIC_CLOCKEVENTS
 311         select GENERIC_GPIO
 312         select USB_ARCH_HAS_EHCI
 313         help
 314           Support for systems based on the Freescale 3xxx CPUs.
 315
 316 config ARCH_NETX
 317         bool "Hilscher NetX based"
 318         select CPU_ARM926T
 319         select ARM_VIC
 320         select GENERIC_CLOCKEVENTS
 321         select GENERIC_TIME
 322         help
 323           This enables support for systems based on the Hilscher NetX Soc
 324
 325 config ARCH_H720X
 326         bool "Hynix HMS720x-based"
 327         select CPU_ARM720T
 328         select ISA_DMA_API
 329         help
 330           This enables support for systems based on the Hynix HMS720x
 331
 332 config ARCH_IOP13XX
 333         bool "IOP13xx-based"
 334         depends on MMU
 335         select CPU_XSC3
 336         select PLAT_IOP
 337         select PCI
 338         select ARCH_SUPPORTS_MSI
 339         select VMSPLIT_1G
 340         help
 341           Support for Intel's IOP13XX (XScale) family of processors.
 342
 343 config ARCH_IOP32X
 344         bool "IOP32x-based"
 345         depends on MMU
 346         select CPU_XSCALE
 347         select PLAT_IOP
 348         select PCI
 349         select GENERIC_GPIO
 350         select ARCH_REQUIRE_GPIOLIB
 351         help
 352           Support for Intel's 80219 and IOP32X (XScale) family of
 353           processors.
 354
 355 config ARCH_IOP33X
 356         bool "IOP33x-based"
 357         depends on MMU
 358         select CPU_XSCALE
 359         select PLAT_IOP
 360         select PCI
 361         select GENERIC_GPIO
 362         select ARCH_REQUIRE_GPIOLIB
 363         help
 364           Support for Intel's IOP33X (XScale) family of processors.
 365
 366 config ARCH_IXP23XX
 367         bool "IXP23XX-based"
 368         depends on MMU
 369         select CPU_XSC3
 370         select PCI
 371         help
 372           Support for Intel's IXP23xx (XScale) family of processors.
 373
 374 config ARCH_IXP2000
 375         bool "IXP2400/2800-based"
 376         depends on MMU
 377         select CPU_XSCALE
 378         select PCI
 379         help
 380           Support for Intel's IXP2400/2800 (XScale) family of processors.
 381
 382 config ARCH_IXP4XX
 383         bool "IXP4xx-based"
 384         depends on MMU
 385         select CPU_XSCALE
 386         select GENERIC_GPIO
 387         select GENERIC_TIME
 388         select GENERIC_CLOCKEVENTS
 389         select DMABOUNCE if PCI
 390         help
 391           Support for Intel's IXP4XX (XScale) family of processors.
 392
 393 config ARCH_L7200
 394         bool "LinkUp-L7200"
 395         select CPU_ARM720T
 396         select FIQ
 397         help
 398           Say Y here if you intend to run this kernel on a LinkUp Systems
 399           L7200 Software Development Board which uses an ARM720T processor.
 400           Information on this board can be obtained at:
 401
 402           <http://www.linkupsys.com/>
 403
 404           If you have any questions or comments about the Linux kernel port
 405           to this board, send e-mail to <sjhill@cotw.com>.
 406
 407 config ARCH_KIRKWOOD
 408         bool "Marvell Kirkwood"
 409         select CPU_FEROCEON
 410         select PCI
 411         select GENERIC_GPIO
 412         select ARCH_REQUIRE_GPIOLIB
 413         select GENERIC_TIME
 414         select GENERIC_CLOCKEVENTS
 415         select PLAT_ORION
 416         help
 417           Support for the following Marvell Kirkwood series SoCs:
 418           88F6180, 88F6192 and 88F6281.
 419
 420 config ARCH_LOKI
 421         bool "Marvell Loki (88RC8480)"
 422         select CPU_FEROCEON
 423         select GENERIC_TIME
 424         select GENERIC_CLOCKEVENTS
 425         select PLAT_ORION
 426         help
 427           Support for the Marvell Loki (88RC8480) SoC.
 428
 429 config ARCH_MV78XX0
 430         bool "Marvell MV78xx0"
 431         select CPU_FEROCEON
 432         select PCI
 433         select GENERIC_GPIO
 434         select ARCH_REQUIRE_GPIOLIB
 435         select GENERIC_TIME
 436         select GENERIC_CLOCKEVENTS
 437         select PLAT_ORION
 438         help
 439           Support for the following Marvell MV78xx0 series SoCs:
 440           MV781x0, MV782x0.
 441
 442 config ARCH_ORION5X
 443         bool "Marvell Orion"
 444         depends on MMU
 445         select CPU_FEROCEON
 446         select PCI
 447         select GENERIC_GPIO
 448         select ARCH_REQUIRE_GPIOLIB
 449         select GENERIC_TIME
 450         select GENERIC_CLOCKEVENTS
 451         select PLAT_ORION
 452         help
 453           Support for the following Marvell Orion 5x series SoCs:
 454           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 455           Orion-2 (5281), Orion-1-90 (6183).
 456
 457 config ARCH_MMP
 458         bool "Marvell PXA168/910"
 459         depends on MMU
 460         select GENERIC_GPIO
 461         select ARCH_REQUIRE_GPIOLIB
 462         select HAVE_CLK
 463         select COMMON_CLKDEV
 464         select GENERIC_TIME
 465         select GENERIC_CLOCKEVENTS
 466         select TICK_ONESHOT
 467         select PLAT_PXA
 468         help
 469           Support for Marvell's PXA168/910 processor line.
 470
 471 config ARCH_KS8695
 472         bool "Micrel/Kendin KS8695"
 473         select CPU_ARM922T
 474         select GENERIC_GPIO
 475         select ARCH_REQUIRE_GPIOLIB
 476         help
 477           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 478           System-on-Chip devices.
 479
 480 config ARCH_NS9XXX
 481         bool "NetSilicon NS9xxx"
 482         select CPU_ARM926T
 483         select GENERIC_GPIO
 484         select GENERIC_TIME
 485         select GENERIC_CLOCKEVENTS
 486         select HAVE_CLK
 487         help
 488           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 489           System.
 490
 491           <http://www.digi.com/products/microprocessors/index.jsp>
 492
 493 config ARCH_W90X900
 494         bool "Nuvoton W90X900 CPU"
 495         select CPU_ARM926T
 496         select ARCH_REQUIRE_GPIOLIB
 497         select GENERIC_GPIO
 498         select HAVE_CLK
 499         select COMMON_CLKDEV
 500         select GENERIC_TIME
 501         select GENERIC_CLOCKEVENTS
 502         help
 503           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 504           At present, the w90x900 has been renamed nuc900, regarding
 505           the ARM series product line, you can login the following
 506           link address to know more.
 507
 508           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 509                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 510
 511 config ARCH_PNX4008
 512         bool "Philips Nexperia PNX4008 Mobile"
 513         select CPU_ARM926T
 514         select HAVE_CLK
 515         help
 516           This enables support for Philips PNX4008 mobile platform.
 517
 518 config ARCH_PXA
 519         bool "PXA2xx/PXA3xx-based"
 520         depends on MMU
 521         select ARCH_MTD_XIP
 522         select GENERIC_GPIO
 523         select HAVE_CLK
 524         select COMMON_CLKDEV
 525         select ARCH_REQUIRE_GPIOLIB
 526         select GENERIC_TIME
 527         select GENERIC_CLOCKEVENTS
 528         select TICK_ONESHOT
 529         select PLAT_PXA
 530         help
 531           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 532
 533 config ARCH_MSM
 534         bool "Qualcomm MSM"
 535         select CPU_V6
 536         select GENERIC_TIME
 537         select GENERIC_CLOCKEVENTS
 538         help
 539           Support for Qualcomm MSM7K based systems.  This runs on the ARM11
 540           apps processor of the MSM7K and depends on a shared memory
 541           interface to the ARM9 modem processor which runs the baseband stack
 542           and controls some vital subsystems (clock and power control, etc).
 543
 544 config ARCH_RPC
 545         bool "RiscPC"
 546         select ARCH_ACORN
 547         select FIQ
 548         select TIMER_ACORN
 549         select ARCH_MAY_HAVE_PC_FDC
 550         select HAVE_PATA_PLATFORM
 551         select ISA_DMA_API
 552         select NO_IOPORT
 553         select ARCH_SPARSEMEM_ENABLE
 554         help
 555           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 556           CD-ROM interface, serial and parallel port, and the floppy drive.
 557
 558 config ARCH_SA1100
 559         bool "SA1100-based"
 560         select CPU_SA1100
 561         select ISA
 562         select ARCH_SPARSEMEM_ENABLE
 563         select ARCH_MTD_XIP
 564         select GENERIC_GPIO
 565         select GENERIC_TIME
 566         select GENERIC_CLOCKEVENTS
 567         select HAVE_CLK
 568         select TICK_ONESHOT
 569         select ARCH_REQUIRE_GPIOLIB
 570         help
 571           Support for StrongARM 11x0 based boards.
 572
 573 config ARCH_S3C2410
 574         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 575         select GENERIC_GPIO
 576         select HAVE_CLK
 577         help
 578           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 579           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 580           the Samsung SMDK2410 development board (and derivatives).
 581
 582 config ARCH_S3C64XX
 583         bool "Samsung S3C64XX"
 584         select GENERIC_GPIO
 585         select HAVE_CLK
 586         help
 587           Samsung S3C64XX series based systems
 588
 589 config ARCH_SHARK
 590         bool "Shark"
 591         select CPU_SA110
 592         select ISA
 593         select ISA_DMA
 594         select ZONE_DMA
 595         select PCI
 596         help
 597           Support for the StrongARM based Digital DNARD machine, also known
 598           as "Shark" (<http://www.shark-linux.de/shark.html>).
 599
 600 config ARCH_LH7A40X
 601         bool "Sharp LH7A40X"
 602         select CPU_ARM922T
 603         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 604         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 605         help
 606           Say Y here for systems based on one of the Sharp LH7A40X
 607           System on a Chip processors.  These CPUs include an ARM922T
 608           core with a wide array of integrated devices for
 609           hand-held and low-power applications.
 610
 611 config ARCH_U300
 612         bool "ST-Ericsson U300 Series"
 613         depends on MMU
 614         select CPU_ARM926T
 615         select ARM_AMBA
 616         select ARM_VIC
 617         select GENERIC_TIME
 618         select GENERIC_CLOCKEVENTS
 619         select HAVE_CLK
 620         select COMMON_CLKDEV
 621         select GENERIC_GPIO
 622         help
 623           Support for ST-Ericsson U300 series mobile platforms.
 624
 625 config ARCH_DAVINCI
 626         bool "TI DaVinci"
 627         select CPU_ARM926T
 628         select GENERIC_TIME
 629         select GENERIC_CLOCKEVENTS
 630         select GENERIC_GPIO
 631         select ARCH_REQUIRE_GPIOLIB
 632         select HAVE_CLK
 633         select ZONE_DMA
 634         select HAVE_IDE
 635         select COMMON_CLKDEV
 636         select GENERIC_ALLOCATOR
 637         help
 638           Support for TI's DaVinci platform.
 639
 640 config ARCH_OMAP
 641         bool "TI OMAP"
 642         select GENERIC_GPIO
 643         select HAVE_CLK
 644         select ARCH_REQUIRE_GPIOLIB
 645         select GENERIC_TIME
 646         select GENERIC_CLOCKEVENTS
 647         help
 648           Support for TI's OMAP platform (OMAP1 and OMAP2).
 649
 650 config ARCH_BCMRING
 651         bool "Broadcom BCMRING"
 652         depends on MMU
 653         select CPU_V6
 654         select ARM_AMBA
 655         select COMMON_CLKDEV
 656         select GENERIC_TIME
 657         select GENERIC_CLOCKEVENTS
 658         select ARCH_WANT_OPTIONAL_GPIOLIB
 659         help
 660           Support for Broadcom's BCMRing platform.
 661
 662 endchoice
 663
 664 source "arch/arm/mach-clps711x/Kconfig"
 665
 666 source "arch/arm/mach-ep93xx/Kconfig"
 667
 668 source "arch/arm/mach-footbridge/Kconfig"
 669
 670 source "arch/arm/mach-gemini/Kconfig"
 671
 672 source "arch/arm/mach-integrator/Kconfig"
 673
 674 source "arch/arm/mach-iop32x/Kconfig"
 675
 676 source "arch/arm/mach-iop33x/Kconfig"
 677
 678 source "arch/arm/mach-iop13xx/Kconfig"
 679
 680 source "arch/arm/mach-ixp4xx/Kconfig"
 681
 682 source "arch/arm/mach-ixp2000/Kconfig"
 683
 684 source "arch/arm/mach-ixp23xx/Kconfig"
 685
 686 source "arch/arm/mach-loki/Kconfig"
 687
 688 source "arch/arm/mach-mv78xx0/Kconfig"
 689
 690 source "arch/arm/mach-pxa/Kconfig"
 691 source "arch/arm/plat-pxa/Kconfig"
 692
 693 source "arch/arm/mach-mmp/Kconfig"
 694
 695 source "arch/arm/mach-sa1100/Kconfig"
 696
 697 source "arch/arm/plat-omap/Kconfig"
 698
 699 source "arch/arm/mach-omap1/Kconfig"
 700
 701 source "arch/arm/mach-omap2/Kconfig"
 702
 703 source "arch/arm/mach-orion5x/Kconfig"
 704
 705 source "arch/arm/mach-kirkwood/Kconfig"
 706
 707 source "arch/arm/plat-s3c24xx/Kconfig"
 708 source "arch/arm/plat-s3c64xx/Kconfig"
 709 source "arch/arm/plat-s3c/Kconfig"
 710
 711 if ARCH_S3C2410
 712 source "arch/arm/mach-s3c2400/Kconfig"
 713 source "arch/arm/mach-s3c2410/Kconfig"
 714 source "arch/arm/mach-s3c2412/Kconfig"
 715 source "arch/arm/mach-s3c2440/Kconfig"
 716 source "arch/arm/mach-s3c2442/Kconfig"
 717 source "arch/arm/mach-s3c2443/Kconfig"
 718 endif
 719
 720 if ARCH_S3C64XX
 721 source "arch/arm/mach-s3c6400/Kconfig"
 722 source "arch/arm/mach-s3c6410/Kconfig"
 723 endif
 724
 725 source "arch/arm/plat-stmp3xxx/Kconfig"
 726
 727 source "arch/arm/mach-lh7a40x/Kconfig"
 728
 729 source "arch/arm/mach-h720x/Kconfig"
 730
 731 source "arch/arm/mach-versatile/Kconfig"
 732
 733 source "arch/arm/mach-aaec2000/Kconfig"
 734
 735 source "arch/arm/mach-realview/Kconfig"
 736
 737 source "arch/arm/mach-at91/Kconfig"
 738
 739 source "arch/arm/plat-mxc/Kconfig"
 740
 741 source "arch/arm/mach-netx/Kconfig"
 742
 743 source "arch/arm/mach-ns9xxx/Kconfig"
 744
 745 source "arch/arm/mach-davinci/Kconfig"
 746
 747 source "arch/arm/mach-ks8695/Kconfig"
 748
 749 source "arch/arm/mach-msm/Kconfig"
 750
 751 source "arch/arm/mach-u300/Kconfig"
 752
 753 source "arch/arm/mach-w90x900/Kconfig"
 754
 755 source "arch/arm/mach-bcmring/Kconfig"
 756
 757 # Definitions to make life easier
 758 config ARCH_ACORN
 759         bool
 760
 761 config PLAT_IOP
 762         bool
 763
 764 config PLAT_ORION
 765         bool
 766
 767 config PLAT_PXA
 768         bool
 769
 770 source arch/arm/mm/Kconfig
 771
 772 config IWMMXT
 773         bool "Enable iWMMXt support"
 774         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 775         default y if PXA27x || PXA3xx || ARCH_MMP
 776         help
 777           Enable support for iWMMXt context switching at run time if
 778           running on a CPU that supports it.
 779
 780 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 781 config XSCALE_PMU
 782         bool
 783         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 784         default y
 785
 786 if !MMU
 787 source "arch/arm/Kconfig-nommu"
 788 endif
 789
 790 config ARM_ERRATA_411920
 791         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 792         depends on CPU_V6 && !SMP
 793         help
 794           Invalidation of the Instruction Cache operation can
 795           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 796           It does not affect the MPCore. This option enables the ARM Ltd.
 797           recommended workaround.
 798
 799 config ARM_ERRATA_430973
 800         bool "ARM errata: Stale prediction on replaced interworking branch"
 801         depends on CPU_V7
 802         help
 803           This option enables the workaround for the 430973 Cortex-A8
 804           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 805           interworking branch is replaced with another code sequence at the
 806           same virtual address, whether due to self-modifying code or virtual
 807           to physical address re-mapping, Cortex-A8 does not recover from the
 808           stale interworking branch prediction. This results in Cortex-A8
 809           executing the new code sequence in the incorrect ARM or Thumb state.
 810           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 811           and also flushes the branch target cache at every context switch.
 812           Note that setting specific bits in the ACTLR register may not be
 813           available in non-secure mode.
 814
 815 config ARM_ERRATA_458693
 816         bool "ARM errata: Processor deadlock when a false hazard is created"
 817         depends on CPU_V7
 818         help
 819           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 820           erratum. For very specific sequences of memory operations, it is
 821           possible for a hazard condition intended for a cache line to instead
 822           be incorrectly associated with a different cache line. This false
 823           hazard might then cause a processor deadlock. The workaround enables
 824           the L1 caching of the NEON accesses and disables the PLD instruction
 825           in the ACTLR register. Note that setting specific bits in the ACTLR
 826           register may not be available in non-secure mode.
 827
 828 config ARM_ERRATA_460075
 829         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
 830         depends on CPU_V7
 831         help
 832           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
 833           erratum. Any asynchronous access to the L2 cache may encounter a
 834           situation in which recent store transactions to the L2 cache are lost
 835           and overwritten with stale memory contents from external memory. The
 836           workaround disables the write-allocate mode for the L2 cache via the
 837           ACTLR register. Note that setting specific bits in the ACTLR register
 838           may not be available in non-secure mode.
 839
 840 endmenu
 841
 842 source "arch/arm/common/Kconfig"
 843
 844 config FORCE_MAX_ZONEORDER
 845         int
 846         depends on SA1111
 847         default "9"
 848
 849 menu "Bus support"
 850
 851 config ARM_AMBA
 852         bool
 853
 854 config ISA
 855         bool
 856         help
 857           Find out whether you have ISA slots on your motherboard.  ISA is the
 858           name of a bus system, i.e. the way the CPU talks to the other stuff
 859           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 860           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 861           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 862
 863 # Select ISA DMA controller support
 864 config ISA_DMA
 865         bool
 866         select ISA_DMA_API
 867
 868 # Select ISA DMA interface
 869 config ISA_DMA_API
 870         bool
 871
 872 config PCI
 873         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 874         help
 875           Find out whether you have a PCI motherboard. PCI is the name of a
 876           bus system, i.e. the way the CPU talks to the other stuff inside
 877           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 878           VESA. If you have PCI, say Y, otherwise N.
 879
 880 config PCI_SYSCALL
 881         def_bool PCI
 882
 883 # Select the host bridge type
 884 config PCI_HOST_VIA82C505
 885         bool
 886         depends on PCI && ARCH_SHARK
 887         default y
 888
 889 config PCI_HOST_ITE8152
 890         bool
 891         depends on PCI && MACH_ARMCORE
 892         default y
 893         select DMABOUNCE
 894
 895 source "drivers/pci/Kconfig"
 896
 897 source "drivers/pcmcia/Kconfig"
 898
 899 endmenu
 900
 901 menu "Kernel Features"
 902
 903 source "kernel/time/Kconfig"
 904
 905 config SMP
 906         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 907         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
 908                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
 909         depends on GENERIC_CLOCKEVENTS
 910         select USE_GENERIC_SMP_HELPERS
 911         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
 912         help
 913           This enables support for systems with more than one CPU. If you have
 914           a system with only one CPU, like most personal computers, say N. If
 915           you have a system with more than one CPU, say Y.
 916
 917           If you say N here, the kernel will run on single and multiprocessor
 918           machines, but will use only one CPU of a multiprocessor machine. If
 919           you say Y here, the kernel will run on many, but not all, single
 920           processor machines. On a single processor machine, the kernel will
 921           run faster if you say N here.
 922
 923           See also <file:Documentation/i386/IO-APIC.txt>,
 924           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 925           <http://www.linuxdoc.org/docs.html#howto>.
 926
 927           If you don't know what to do here, say N.
 928
 929 config HAVE_ARM_SCU
 930         bool
 931         depends on SMP
 932         help
 933           This option enables support for the ARM system coherency unit
 934
 935 config HAVE_ARM_TWD
 936         bool
 937         depends on SMP
 938         help
 939           This options enables support for the ARM timer and watchdog unit
 940
 941 choice
 942         prompt "Memory split"
 943         default VMSPLIT_3G
 944         help
 945           Select the desired split between kernel and user memory.
 946
 947           If you are not absolutely sure what you are doing, leave this
 948           option alone!
 949
 950         config VMSPLIT_3G
 951                 bool "3G/1G user/kernel split"
 952         config VMSPLIT_2G
 953                 bool "2G/2G user/kernel split"
 954         config VMSPLIT_1G
 955                 bool "1G/3G user/kernel split"
 956 endchoice
 957
 958 config PAGE_OFFSET
 959         hex
 960         default 0x40000000 if VMSPLIT_1G
 961         default 0x80000000 if VMSPLIT_2G
 962         default 0xC0000000
 963
 964 config NR_CPUS
 965         int "Maximum number of CPUs (2-32)"
 966         range 2 32
 967         depends on SMP
 968         default "4"
 969
 970 config HOTPLUG_CPU
 971         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 972         depends on SMP && HOTPLUG && EXPERIMENTAL
 973         help
 974           Say Y here to experiment with turning CPUs off and on.  CPUs
 975           can be controlled through /sys/devices/system/cpu.
 976
 977 config LOCAL_TIMERS
 978         bool "Use local timer interrupts"
 979         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
 980                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
 981         default y
 982         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
 983         help
 984           Enable support for local timers on SMP platforms, rather then the
 985           legacy IPI broadcast method.  Local timers allows the system
 986           accounting to be spread across the timer interval, preventing a
 987           "thundering herd" at every timer tick.
 988
 989 config PREEMPT
 990         bool "Preemptible Kernel (EXPERIMENTAL)"
 991         depends on EXPERIMENTAL
 992         help
 993           This option reduces the latency of the kernel when reacting to
 994           real-time or interactive events by allowing a low priority process to
 995           be preempted even if it is in kernel mode executing a system call.
 996           This allows applications to run more reliably even when the system is
 997           under load.
 998
 999           Say Y here if you are building a kernel for a desktop, embedded
1000           or real-time system.  Say N if you are unsure.
1001
1002 config HZ
1003         int
1004         default 128 if ARCH_L7200
1005         default 200 if ARCH_EBSA110 || ARCH_S3C2410
1006         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1007         default AT91_TIMER_HZ if ARCH_AT91
1008         default 100
1009
1010 config AEABI
1011         bool "Use the ARM EABI to compile the kernel"
1012         help
1013           This option allows for the kernel to be compiled using the latest
1014           ARM ABI (aka EABI).  This is only useful if you are using a user
1015           space environment that is also compiled with EABI.
1016
1017           Since there are major incompatibilities between the legacy ABI and
1018           EABI, especially with regard to structure member alignment, this
1019           option also changes the kernel syscall calling convention to
1020           disambiguate both ABIs and allow for backward compatibility support
1021           (selected with CONFIG_OABI_COMPAT).
1022
1023           To use this you need GCC version 4.0.0 or later.
1024
1025 config OABI_COMPAT
1026         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1027         depends on AEABI && EXPERIMENTAL
1028         default y
1029         help
1030           This option preserves the old syscall interface along with the
1031           new (ARM EABI) one. It also provides a compatibility layer to
1032           intercept syscalls that have structure arguments which layout
1033           in memory differs between the legacy ABI and the new ARM EABI
1034           (only for non "thumb" binaries). This option adds a tiny
1035           overhead to all syscalls and produces a slightly larger kernel.
1036           If you know you'll be using only pure EABI user space then you
1037           can say N here. If this option is not selected and you attempt
1038           to execute a legacy ABI binary then the result will be
1039           UNPREDICTABLE (in fact it can be predicted that it won't work
1040           at all). If in doubt say Y.
1041
1042 config ARCH_HAS_HOLES_MEMORYMODEL
1043         bool
1044
1045 # Discontigmem is deprecated
1046 config ARCH_DISCONTIGMEM_ENABLE
1047         bool
1048
1049 config ARCH_SPARSEMEM_ENABLE
1050         bool
1051
1052 config ARCH_SPARSEMEM_DEFAULT
1053         def_bool ARCH_SPARSEMEM_ENABLE
1054
1055 config ARCH_SELECT_MEMORY_MODEL
1056         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1057
1058 config NODES_SHIFT
1059         int
1060         default "4" if ARCH_LH7A40X
1061         default "2"
1062         depends on NEED_MULTIPLE_NODES
1063
1064 config HIGHMEM
1065         bool "High Memory Support (EXPERIMENTAL)"
1066         depends on MMU && EXPERIMENTAL
1067         help
1068           The address space of ARM processors is only 4 Gigabytes large
1069           and it has to accommodate user address space, kernel address
1070           space as well as some memory mapped IO. That means that, if you
1071           have a large amount of physical memory and/or IO, not all of the
1072           memory can be "permanently mapped" by the kernel. The physical
1073           memory that is not permanently mapped is called "high memory".
1074
1075           Depending on the selected kernel/user memory split, minimum
1076           vmalloc space and actual amount of RAM, you may not need this
1077           option which should result in a slightly faster kernel.
1078
1079           If unsure, say n.
1080
1081 config HIGHPTE
1082         bool "Allocate 2nd-level pagetables from highmem"
1083         depends on HIGHMEM
1084         depends on !OUTER_CACHE
1085
1086 source "mm/Kconfig"
1087
1088 config LEDS
1089         bool "Timer and CPU usage LEDs"
1090         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1091                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1092                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1093                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1094                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1095                    ARCH_AT91 || ARCH_DAVINCI || \
1096                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1097         help
1098           If you say Y here, the LEDs on your machine will be used
1099           to provide useful information about your current system status.
1100
1101           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1102           be able to select which LEDs are active using the options below. If
1103           you are compiling a kernel for the EBSA-110 or the LART however, the
1104           red LED will simply flash regularly to indicate that the system is
1105           still functional. It is safe to say Y here if you have a CATS
1106           system, but the driver will do nothing.
1107
1108 config LEDS_TIMER
1109         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1110                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1111                             || MACH_OMAP_PERSEUS2
1112         depends on LEDS
1113         depends on !GENERIC_CLOCKEVENTS
1114         default y if ARCH_EBSA110
1115         help
1116           If you say Y here, one of the system LEDs (the green one on the
1117           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1118           will flash regularly to indicate that the system is still
1119           operational. This is mainly useful to kernel hackers who are
1120           debugging unstable kernels.
1121
1122           The LART uses the same LED for both Timer LED and CPU usage LED
1123           functions. You may choose to use both, but the Timer LED function
1124           will overrule the CPU usage LED.
1125
1126 config LEDS_CPU
1127         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1128                         !ARCH_OMAP) \
1129                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1130                         || MACH_OMAP_PERSEUS2
1131         depends on LEDS
1132         help
1133           If you say Y here, the red LED will be used to give a good real
1134           time indication of CPU usage, by lighting whenever the idle task
1135           is not currently executing.
1136
1137           The LART uses the same LED for both Timer LED and CPU usage LED
1138           functions. You may choose to use both, but the Timer LED function
1139           will overrule the CPU usage LED.
1140
1141 config ALIGNMENT_TRAP
1142         bool
1143         depends on CPU_CP15_MMU
1144         default y if !ARCH_EBSA110
1145         help
1146           ARM processors cannot fetch/store information which is not
1147           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1148           address divisible by 4. On 32-bit ARM processors, these non-aligned
1149           fetch/store instructions will be emulated in software if you say
1150           here, which has a severe performance impact. This is necessary for
1151           correct operation of some network protocols. With an IP-only
1152           configuration it is safe to say N, otherwise say Y.
1153
1154 config UACCESS_WITH_MEMCPY
1155         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1156         depends on MMU && EXPERIMENTAL
1157         default y if CPU_FEROCEON
1158         help
1159           Implement faster copy_to_user and clear_user methods for CPU
1160           cores where a 8-word STM instruction give significantly higher
1161           memory write throughput than a sequence of individual 32bit stores.
1162
1163           A possible side effect is a slight increase in scheduling latency
1164           between threads sharing the same address space if they invoke
1165           such copy operations with large buffers.
1166
1167           However, if the CPU data cache is using a write-allocate mode,
1168           this option is unlikely to provide any performance gain.
1169
1170 endmenu
1171
1172 menu "Boot options"
1173
1174 # Compressed boot loader in ROM.  Yes, we really want to ask about
1175 # TEXT and BSS so we preserve their values in the config files.
1176 config ZBOOT_ROM_TEXT
1177         hex "Compressed ROM boot loader base address"
1178         default "0"
1179         help
1180           The physical address at which the ROM-able zImage is to be
1181           placed in the target.  Platforms which normally make use of
1182           ROM-able zImage formats normally set this to a suitable
1183           value in their defconfig file.
1184
1185           If ZBOOT_ROM is not enabled, this has no effect.
1186
1187 config ZBOOT_ROM_BSS
1188         hex "Compressed ROM boot loader BSS address"
1189         default "0"
1190         help
1191           The base address of an area of read/write memory in the target
1192           for the ROM-able zImage which must be available while the
1193           decompressor is running. It must be large enough to hold the
1194           entire decompressed kernel plus an additional 128 KiB.
1195           Platforms which normally make use of ROM-able zImage formats
1196           normally set this to a suitable value in their defconfig file.
1197
1198           If ZBOOT_ROM is not enabled, this has no effect.
1199
1200 config ZBOOT_ROM
1201         bool "Compressed boot loader in ROM/flash"
1202         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1203         help
1204           Say Y here if you intend to execute your compressed kernel image
1205           (zImage) directly from ROM or flash.  If unsure, say N.
1206
1207 config CMDLINE
1208         string "Default kernel command string"
1209         default ""
1210         help
1211           On some architectures (EBSA110 and CATS), there is currently no way
1212           for the boot loader to pass arguments to the kernel. For these
1213           architectures, you should supply some command-line options at build
1214           time by entering them here. As a minimum, you should specify the
1215           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1216
1217 config XIP_KERNEL
1218         bool "Kernel Execute-In-Place from ROM"
1219         depends on !ZBOOT_ROM
1220         help
1221           Execute-In-Place allows the kernel to run from non-volatile storage
1222           directly addressable by the CPU, such as NOR flash. This saves RAM
1223           space since the text section of the kernel is not loaded from flash
1224           to RAM.  Read-write sections, such as the data section and stack,
1225           are still copied to RAM.  The XIP kernel is not compressed since
1226           it has to run directly from flash, so it will take more space to
1227           store it.  The flash address used to link the kernel object files,
1228           and for storing it, is configuration dependent. Therefore, if you
1229           say Y here, you must know the proper physical address where to
1230           store the kernel image depending on your own flash memory usage.
1231
1232           Also note that the make target becomes "make xipImage" rather than
1233           "make zImage" or "make Image".  The final kernel binary to put in
1234           ROM memory will be arch/arm/boot/xipImage.
1235
1236           If unsure, say N.
1237
1238 config XIP_PHYS_ADDR
1239         hex "XIP Kernel Physical Location"
1240         depends on XIP_KERNEL
1241         default "0x00080000"
1242         help
1243           This is the physical address in your flash memory the kernel will
1244           be linked for and stored to.  This address is dependent on your
1245           own flash usage.
1246
1247 config KEXEC
1248         bool "Kexec system call (EXPERIMENTAL)"
1249         depends on EXPERIMENTAL
1250         help
1251           kexec is a system call that implements the ability to shutdown your
1252           current kernel, and to start another kernel.  It is like a reboot
1253           but it is independent of the system firmware.   And like a reboot
1254           you can start any kernel with it, not just Linux.
1255
1256           It is an ongoing process to be certain the hardware in a machine
1257           is properly shutdown, so do not be surprised if this code does not
1258           initially work for you.  It may help to enable device hotplugging
1259           support.
1260
1261 config ATAGS_PROC
1262         bool "Export atags in procfs"
1263         depends on KEXEC
1264         default y
1265         help
1266           Should the atags used to boot the kernel be exported in an "atags"
1267           file in procfs. Useful with kexec.
1268
1269 endmenu
1270
1271 menu "CPU Power Management"
1272
1273 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_PXA || ARCH_S3C64XX)
1274
1275 source "drivers/cpufreq/Kconfig"
1276
1277 config CPU_FREQ_SA1100
1278         bool
1279         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1280         default y
1281
1282 config CPU_FREQ_SA1110
1283         bool
1284         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1285         default y
1286
1287 config CPU_FREQ_INTEGRATOR
1288         tristate "CPUfreq driver for ARM Integrator CPUs"
1289         depends on ARCH_INTEGRATOR && CPU_FREQ
1290         default y
1291         help
1292           This enables the CPUfreq driver for ARM Integrator CPUs.
1293
1294           For details, take a look at <file:Documentation/cpu-freq>.
1295
1296           If in doubt, say Y.
1297
1298 config CPU_FREQ_PXA
1299         bool
1300         depends on CPU_FREQ && ARCH_PXA && PXA25x
1301         default y
1302         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1303
1304 config CPU_FREQ_S3C64XX
1305         bool "CPUfreq support for Samsung S3C64XX CPUs"
1306         depends on CPU_FREQ && CPU_S3C6410
1307
1308 endif
1309
1310 source "drivers/cpuidle/Kconfig"
1311
1312 endmenu
1313
1314 menu "Floating point emulation"
1315
1316 comment "At least one emulation must be selected"
1317
1318 config FPE_NWFPE
1319         bool "NWFPE math emulation"
1320         depends on !AEABI || OABI_COMPAT
1321         ---help---
1322           Say Y to include the NWFPE floating point emulator in the kernel.
1323           This is necessary to run most binaries. Linux does not currently
1324           support floating point hardware so you need to say Y here even if
1325           your machine has an FPA or floating point co-processor podule.
1326
1327           You may say N here if you are going to load the Acorn FPEmulator
1328           early in the bootup.
1329
1330 config FPE_NWFPE_XP
1331         bool "Support extended precision"
1332         depends on FPE_NWFPE
1333         help
1334           Say Y to include 80-bit support in the kernel floating-point
1335           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1336           Note that gcc does not generate 80-bit operations by default,
1337           so in most cases this option only enlarges the size of the
1338           floating point emulator without any good reason.
1339
1340           You almost surely want to say N here.
1341
1342 config FPE_FASTFPE
1343         bool "FastFPE math emulation (EXPERIMENTAL)"
1344         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1345         ---help---
1346           Say Y here to include the FAST floating point emulator in the kernel.
1347           This is an experimental much faster emulator which now also has full
1348           precision for the mantissa.  It does not support any exceptions.
1349           It is very simple, and approximately 3-6 times faster than NWFPE.
1350
1351           It should be sufficient for most programs.  It may be not suitable
1352           for scientific calculations, but you have to check this for yourself.
1353           If you do not feel you need a faster FP emulation you should better
1354           choose NWFPE.
1355
1356 config VFP
1357         bool "VFP-format floating point maths"
1358         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1359         help
1360           Say Y to include VFP support code in the kernel. This is needed
1361           if your hardware includes a VFP unit.
1362
1363           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1364           release notes and additional status information.
1365
1366           Say N if your target does not have VFP hardware.
1367
1368 config VFPv3
1369         bool
1370         depends on VFP
1371         default y if CPU_V7
1372
1373 config NEON
1374         bool "Advanced SIMD (NEON) Extension support"
1375         depends on VFPv3 && CPU_V7
1376         help
1377           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1378           Extension.
1379
1380 endmenu
1381
1382 menu "Userspace binary formats"
1383
1384 source "fs/Kconfig.binfmt"
1385
1386 config ARTHUR
1387         tristate "RISC OS personality"
1388         depends on !AEABI
1389         help
1390           Say Y here to include the kernel code necessary if you want to run
1391           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1392           experimental; if this sounds frightening, say N and sleep in peace.
1393           You can also say M here to compile this support as a module (which
1394           will be called arthur).
1395
1396 endmenu
1397
1398 menu "Power management options"
1399
1400 source "kernel/power/Kconfig"
1401
1402 config ARCH_SUSPEND_POSSIBLE
1403         def_bool y
1404
1405 endmenu
1406
1407 source "net/Kconfig"
1408
1409 menu "Device Drivers"
1410
1411 source "drivers/base/Kconfig"
1412
1413 source "drivers/connector/Kconfig"
1414
1415 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1416 source "drivers/mtd/Kconfig"
1417 endif
1418
1419 source "drivers/parport/Kconfig"
1420
1421 source "drivers/pnp/Kconfig"
1422
1423 source "drivers/block/Kconfig"
1424
1425 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1426
1427 source "drivers/misc/Kconfig"
1428
1429 source "drivers/ide/Kconfig"
1430
1431 source "drivers/scsi/Kconfig"
1432
1433 source "drivers/ata/Kconfig"
1434
1435 source "drivers/md/Kconfig"
1436
1437 source "drivers/message/fusion/Kconfig"
1438
1439 source "drivers/ieee1394/Kconfig"
1440
1441 source "drivers/message/i2o/Kconfig"
1442
1443 source "drivers/net/Kconfig"
1444
1445 source "drivers/isdn/Kconfig"
1446
1447 # input before char - char/joystick depends on it. As does USB.
1448
1449 source "drivers/input/Kconfig"
1450
1451 source "drivers/char/Kconfig"
1452
1453 source "drivers/i2c/Kconfig"
1454
1455 source "drivers/spi/Kconfig"
1456
1457 source "drivers/gpio/Kconfig"
1458
1459 source "drivers/w1/Kconfig"
1460
1461 source "drivers/power/Kconfig"
1462
1463 source "drivers/hwmon/Kconfig"
1464
1465 source "drivers/thermal/Kconfig"
1466
1467 source "drivers/watchdog/Kconfig"
1468
1469 source "drivers/ssb/Kconfig"
1470
1471 #source "drivers/l3/Kconfig"
1472
1473 source "drivers/mfd/Kconfig"
1474
1475 source "drivers/media/Kconfig"
1476
1477 source "drivers/video/Kconfig"
1478
1479 source "sound/Kconfig"
1480
1481 source "drivers/hid/Kconfig"
1482
1483 source "drivers/usb/Kconfig"
1484
1485 source "drivers/uwb/Kconfig"
1486
1487 source "drivers/mmc/Kconfig"
1488
1489 source "drivers/memstick/Kconfig"
1490
1491 source "drivers/accessibility/Kconfig"
1492
1493 source "drivers/leds/Kconfig"
1494
1495 source "drivers/rtc/Kconfig"
1496
1497 source "drivers/dma/Kconfig"
1498
1499 source "drivers/dca/Kconfig"
1500
1501 source "drivers/auxdisplay/Kconfig"
1502
1503 source "drivers/regulator/Kconfig"
1504
1505 source "drivers/uio/Kconfig"
1506
1507 source "drivers/staging/Kconfig"
1508
1509 endmenu
1510
1511 source "fs/Kconfig"
1512
1513 source "arch/arm/Kconfig.debug"
1514
1515 source "security/Kconfig"
1516
1517 source "crypto/Kconfig"
1518
1519 source "lib/Kconfig"