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