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 ARCH_HAS_CPUFREQ
 130         bool
 131         help
 132           Internal node to signify that the ARCH has CPUFREQ support
 133           and that the relevant menu configurations are displayed for
 134           it.
 135
 136 config GENERIC_HWEIGHT
 137         bool
 138         default y
 139
 140 config GENERIC_CALIBRATE_DELAY
 141         bool
 142         default y
 143
 144 config ARCH_MAY_HAVE_PC_FDC
 145         bool
 146
 147 config ZONE_DMA
 148         bool
 149
 150 config GENERIC_ISA_DMA
 151         bool
 152
 153 config FIQ
 154         bool
 155
 156 config ARCH_MTD_XIP
 157         bool
 158
 159 config GENERIC_HARDIRQS_NO__DO_IRQ
 160         def_bool y
 161
 162 if OPROFILE
 163
 164 config OPROFILE_ARMV6
 165         def_bool y
 166         depends on CPU_V6 && !SMP
 167         select OPROFILE_ARM11_CORE
 168
 169 config OPROFILE_MPCORE
 170         def_bool y
 171         depends on CPU_V6 && SMP
 172         select OPROFILE_ARM11_CORE
 173
 174 config OPROFILE_ARM11_CORE
 175         bool
 176
 177 config OPROFILE_ARMV7
 178         def_bool y
 179         depends on CPU_V7 && !SMP
 180         bool
 181
 182 endif
 183
 184 config VECTORS_BASE
 185         hex
 186         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 187         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 188         default 0x00000000
 189         help
 190           The base address of exception vectors.
 191
 192 source "init/Kconfig"
 193
 194 source "kernel/Kconfig.freezer"
 195
 196 menu "System Type"
 197
 198 choice
 199         prompt "ARM system type"
 200         default ARCH_VERSATILE
 201
 202 config ARCH_AAEC2000
 203         bool "Agilent AAEC-2000 based"
 204         select CPU_ARM920T
 205         select ARM_AMBA
 206         select HAVE_CLK
 207         help
 208           This enables support for systems based on the Agilent AAEC-2000
 209
 210 config ARCH_INTEGRATOR
 211         bool "ARM Ltd. Integrator family"
 212         select ARM_AMBA
 213         select ARCH_HAS_CPUFREQ
 214         select HAVE_CLK
 215         select COMMON_CLKDEV
 216         select ICST525
 217         help
 218           Support for ARM's Integrator platform.
 219
 220 config ARCH_REALVIEW
 221         bool "ARM Ltd. RealView family"
 222         select ARM_AMBA
 223         select HAVE_CLK
 224         select COMMON_CLKDEV
 225         select ICST307
 226         select GENERIC_TIME
 227         select GENERIC_CLOCKEVENTS
 228         help
 229           This enables support for ARM Ltd RealView boards.
 230
 231 config ARCH_VERSATILE
 232         bool "ARM Ltd. Versatile family"
 233         select ARM_AMBA
 234         select ARM_VIC
 235         select HAVE_CLK
 236         select COMMON_CLKDEV
 237         select ICST307
 238         select GENERIC_TIME
 239         select GENERIC_CLOCKEVENTS
 240         help
 241           This enables support for ARM Ltd Versatile board.
 242
 243 config ARCH_AT91
 244         bool "Atmel AT91"
 245         select GENERIC_GPIO
 246         select ARCH_REQUIRE_GPIOLIB
 247         select HAVE_CLK
 248         help
 249           This enables support for systems based on the Atmel AT91RM9200,
 250           AT91SAM9 and AT91CAP9 processors.
 251
 252 config ARCH_CLPS711X
 253         bool "Cirrus Logic CLPS711x/EP721x-based"
 254         select CPU_ARM720T
 255         help
 256           Support for Cirrus Logic 711x/721x based boards.
 257
 258 config ARCH_GEMINI
 259         bool "Cortina Systems Gemini"
 260         select CPU_FA526
 261         select GENERIC_GPIO
 262         select ARCH_REQUIRE_GPIOLIB
 263         help
 264           Support for the Cortina Systems Gemini family SoCs
 265
 266 config ARCH_EBSA110
 267         bool "EBSA-110"
 268         select CPU_SA110
 269         select ISA
 270         select NO_IOPORT
 271         help
 272           This is an evaluation board for the StrongARM processor available
 273           from Digital. It has limited hardware on-board, including an
 274           Ethernet interface, two PCMCIA sockets, two serial ports and a
 275           parallel port.
 276
 277 config ARCH_EP93XX
 278         bool "EP93xx-based"
 279         select CPU_ARM920T
 280         select ARM_AMBA
 281         select ARM_VIC
 282         select GENERIC_GPIO
 283         select HAVE_CLK
 284         select COMMON_CLKDEV
 285         select ARCH_REQUIRE_GPIOLIB
 286         select ARCH_HAS_HOLES_MEMORYMODEL
 287         help
 288           This enables support for the Cirrus EP93xx series of CPUs.
 289
 290 config ARCH_FOOTBRIDGE
 291         bool "FootBridge"
 292         select CPU_SA110
 293         select FOOTBRIDGE
 294         help
 295           Support for systems based on the DC21285 companion chip
 296           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 297
 298 config ARCH_MXC
 299         bool "Freescale MXC/iMX-based"
 300         select GENERIC_TIME
 301         select GENERIC_CLOCKEVENTS
 302         select ARCH_MTD_XIP
 303         select GENERIC_GPIO
 304         select ARCH_REQUIRE_GPIOLIB
 305         select HAVE_CLK
 306         help
 307           Support for Freescale MXC/iMX-based family of processors
 308
 309 config ARCH_STMP3XXX
 310         bool "Freescale STMP3xxx"
 311         select CPU_ARM926T
 312         select HAVE_CLK
 313         select COMMON_CLKDEV
 314         select ARCH_REQUIRE_GPIOLIB
 315         select GENERIC_TIME
 316         select GENERIC_CLOCKEVENTS
 317         select GENERIC_GPIO
 318         select USB_ARCH_HAS_EHCI
 319         help
 320           Support for systems based on the Freescale 3xxx CPUs.
 321
 322 config ARCH_NETX
 323         bool "Hilscher NetX based"
 324         select CPU_ARM926T
 325         select ARM_VIC
 326         select GENERIC_CLOCKEVENTS
 327         select GENERIC_TIME
 328         help
 329           This enables support for systems based on the Hilscher NetX Soc
 330
 331 config ARCH_H720X
 332         bool "Hynix HMS720x-based"
 333         select CPU_ARM720T
 334         select ISA_DMA_API
 335         help
 336           This enables support for systems based on the Hynix HMS720x
 337
 338 config ARCH_IOP13XX
 339         bool "IOP13xx-based"
 340         depends on MMU
 341         select CPU_XSC3
 342         select PLAT_IOP
 343         select PCI
 344         select ARCH_SUPPORTS_MSI
 345         select VMSPLIT_1G
 346         help
 347           Support for Intel's IOP13XX (XScale) family of processors.
 348
 349 config ARCH_IOP32X
 350         bool "IOP32x-based"
 351         depends on MMU
 352         select CPU_XSCALE
 353         select PLAT_IOP
 354         select PCI
 355         select GENERIC_GPIO
 356         select ARCH_REQUIRE_GPIOLIB
 357         help
 358           Support for Intel's 80219 and IOP32X (XScale) family of
 359           processors.
 360
 361 config ARCH_IOP33X
 362         bool "IOP33x-based"
 363         depends on MMU
 364         select CPU_XSCALE
 365         select PLAT_IOP
 366         select PCI
 367         select GENERIC_GPIO
 368         select ARCH_REQUIRE_GPIOLIB
 369         help
 370           Support for Intel's IOP33X (XScale) family of processors.
 371
 372 config ARCH_IXP23XX
 373         bool "IXP23XX-based"
 374         depends on MMU
 375         select CPU_XSC3
 376         select PCI
 377         help
 378           Support for Intel's IXP23xx (XScale) family of processors.
 379
 380 config ARCH_IXP2000
 381         bool "IXP2400/2800-based"
 382         depends on MMU
 383         select CPU_XSCALE
 384         select PCI
 385         help
 386           Support for Intel's IXP2400/2800 (XScale) family of processors.
 387
 388 config ARCH_IXP4XX
 389         bool "IXP4xx-based"
 390         depends on MMU
 391         select CPU_XSCALE
 392         select GENERIC_GPIO
 393         select GENERIC_TIME
 394         select GENERIC_CLOCKEVENTS
 395         select DMABOUNCE if PCI
 396         help
 397           Support for Intel's IXP4XX (XScale) family of processors.
 398
 399 config ARCH_L7200
 400         bool "LinkUp-L7200"
 401         select CPU_ARM720T
 402         select FIQ
 403         help
 404           Say Y here if you intend to run this kernel on a LinkUp Systems
 405           L7200 Software Development Board which uses an ARM720T processor.
 406           Information on this board can be obtained at:
 407
 408           <http://www.linkupsys.com/>
 409
 410           If you have any questions or comments about the Linux kernel port
 411           to this board, send e-mail to <sjhill@cotw.com>.
 412
 413 config ARCH_KIRKWOOD
 414         bool "Marvell Kirkwood"
 415         select CPU_FEROCEON
 416         select PCI
 417         select GENERIC_GPIO
 418         select ARCH_REQUIRE_GPIOLIB
 419         select GENERIC_TIME
 420         select GENERIC_CLOCKEVENTS
 421         select PLAT_ORION
 422         help
 423           Support for the following Marvell Kirkwood series SoCs:
 424           88F6180, 88F6192 and 88F6281.
 425
 426 config ARCH_LOKI
 427         bool "Marvell Loki (88RC8480)"
 428         select CPU_FEROCEON
 429         select GENERIC_TIME
 430         select GENERIC_CLOCKEVENTS
 431         select PLAT_ORION
 432         help
 433           Support for the Marvell Loki (88RC8480) SoC.
 434
 435 config ARCH_MV78XX0
 436         bool "Marvell MV78xx0"
 437         select CPU_FEROCEON
 438         select PCI
 439         select GENERIC_GPIO
 440         select ARCH_REQUIRE_GPIOLIB
 441         select GENERIC_TIME
 442         select GENERIC_CLOCKEVENTS
 443         select PLAT_ORION
 444         help
 445           Support for the following Marvell MV78xx0 series SoCs:
 446           MV781x0, MV782x0.
 447
 448 config ARCH_ORION5X
 449         bool "Marvell Orion"
 450         depends on MMU
 451         select CPU_FEROCEON
 452         select PCI
 453         select GENERIC_GPIO
 454         select ARCH_REQUIRE_GPIOLIB
 455         select GENERIC_TIME
 456         select GENERIC_CLOCKEVENTS
 457         select PLAT_ORION
 458         help
 459           Support for the following Marvell Orion 5x series SoCs:
 460           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 461           Orion-2 (5281), Orion-1-90 (6183).
 462
 463 config ARCH_MMP
 464         bool "Marvell PXA168/910"
 465         depends on MMU
 466         select GENERIC_GPIO
 467         select ARCH_REQUIRE_GPIOLIB
 468         select HAVE_CLK
 469         select COMMON_CLKDEV
 470         select GENERIC_TIME
 471         select GENERIC_CLOCKEVENTS
 472         select TICK_ONESHOT
 473         select PLAT_PXA
 474         help
 475           Support for Marvell's PXA168/910 processor line.
 476
 477 config ARCH_KS8695
 478         bool "Micrel/Kendin KS8695"
 479         select CPU_ARM922T
 480         select GENERIC_GPIO
 481         select ARCH_REQUIRE_GPIOLIB
 482         help
 483           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 484           System-on-Chip devices.
 485
 486 config ARCH_NS9XXX
 487         bool "NetSilicon NS9xxx"
 488         select CPU_ARM926T
 489         select GENERIC_GPIO
 490         select GENERIC_TIME
 491         select GENERIC_CLOCKEVENTS
 492         select HAVE_CLK
 493         help
 494           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 495           System.
 496
 497           <http://www.digi.com/products/microprocessors/index.jsp>
 498
 499 config ARCH_W90X900
 500         bool "Nuvoton W90X900 CPU"
 501         select CPU_ARM926T
 502         select ARCH_REQUIRE_GPIOLIB
 503         select GENERIC_GPIO
 504         select COMMON_CLKDEV
 505         help
 506                 Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
 507                 can login www.mcuos.com or www.nuvoton.com to know more.
 508
 509 config ARCH_PNX4008
 510         bool "Philips Nexperia PNX4008 Mobile"
 511         select CPU_ARM926T
 512         select HAVE_CLK
 513         help
 514           This enables support for Philips PNX4008 mobile platform.
 515
 516 config ARCH_PXA
 517         bool "PXA2xx/PXA3xx-based"
 518         depends on MMU
 519         select ARCH_MTD_XIP
 520         select ARCH_HAS_CPUFREQ
 521         select GENERIC_GPIO
 522         select HAVE_CLK
 523         select COMMON_CLKDEV
 524         select ARCH_REQUIRE_GPIOLIB
 525         select GENERIC_TIME
 526         select GENERIC_CLOCKEVENTS
 527         select TICK_ONESHOT
 528         select PLAT_PXA
 529         help
 530           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 531
 532 config ARCH_MSM
 533         bool "Qualcomm MSM"
 534         select CPU_V6
 535         select GENERIC_TIME
 536         select GENERIC_CLOCKEVENTS
 537         help
 538           Support for Qualcomm MSM7K based systems.  This runs on the ARM11
 539           apps processor of the MSM7K and depends on a shared memory
 540           interface to the ARM9 modem processor which runs the baseband stack
 541           and controls some vital subsystems (clock and power control, etc).
 542
 543 config ARCH_RPC
 544         bool "RiscPC"
 545         select ARCH_ACORN
 546         select FIQ
 547         select TIMER_ACORN
 548         select ARCH_MAY_HAVE_PC_FDC
 549         select HAVE_PATA_PLATFORM
 550         select ISA_DMA_API
 551         select NO_IOPORT
 552         select ARCH_SPARSEMEM_ENABLE
 553         help
 554           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 555           CD-ROM interface, serial and parallel port, and the floppy drive.
 556
 557 config ARCH_SA1100
 558         bool "SA1100-based"
 559         select CPU_SA1100
 560         select ISA
 561         select ARCH_SPARSEMEM_ENABLE
 562         select ARCH_MTD_XIP
 563         select ARCH_HAS_CPUFREQ
 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 ARCH_HAS_CPUFREQ
 577         select HAVE_CLK
 578         help
 579           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 580           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 581           the Samsung SMDK2410 development board (and derivatives).
 582
 583 config ARCH_S3C64XX
 584         bool "Samsung S3C64XX"
 585         select GENERIC_GPIO
 586         select HAVE_CLK
 587         select ARCH_HAS_CPUFREQ
 588         help
 589           Samsung S3C64XX series based systems
 590
 591 config ARCH_SHARK
 592         bool "Shark"
 593         select CPU_SA110
 594         select ISA
 595         select ISA_DMA
 596         select ZONE_DMA
 597         select PCI
 598         help
 599           Support for the StrongARM based Digital DNARD machine, also known
 600           as "Shark" (<http://www.shark-linux.de/shark.html>).
 601
 602 config ARCH_LH7A40X
 603         bool "Sharp LH7A40X"
 604         select CPU_ARM922T
 605         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 606         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 607         help
 608           Say Y here for systems based on one of the Sharp LH7A40X
 609           System on a Chip processors.  These CPUs include an ARM922T
 610           core with a wide array of integrated devices for
 611           hand-held and low-power applications.
 612
 613 config ARCH_U300
 614         bool "ST-Ericsson U300 Series"
 615         depends on MMU
 616         select CPU_ARM926T
 617         select ARM_AMBA
 618         select ARM_VIC
 619         select GENERIC_TIME
 620         select GENERIC_CLOCKEVENTS
 621         select HAVE_CLK
 622         select COMMON_CLKDEV
 623         select GENERIC_GPIO
 624         help
 625           Support for ST-Ericsson U300 series mobile platforms.
 626
 627 config ARCH_DAVINCI
 628         bool "TI DaVinci"
 629         select CPU_ARM926T
 630         select GENERIC_TIME
 631         select GENERIC_CLOCKEVENTS
 632         select GENERIC_GPIO
 633         select ARCH_REQUIRE_GPIOLIB
 634         select HAVE_CLK
 635         select ZONE_DMA
 636         select HAVE_IDE
 637         select COMMON_CLKDEV
 638         select GENERIC_ALLOCATOR
 639         help
 640           Support for TI's DaVinci platform.
 641
 642 config ARCH_OMAP
 643         bool "TI OMAP"
 644         select GENERIC_GPIO
 645         select HAVE_CLK
 646         select ARCH_REQUIRE_GPIOLIB
 647         select ARCH_HAS_CPUFREQ
 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-netx/Kconfig"
 733
 734 source "arch/arm/mach-ns9xxx/Kconfig"
 735
 736 source "arch/arm/mach-davinci/Kconfig"
 737
 738 source "arch/arm/mach-ks8695/Kconfig"
 739
 740 source "arch/arm/mach-msm/Kconfig"
 741
 742 source "arch/arm/mach-u300/Kconfig"
 743
 744 source "arch/arm/mach-w90x900/Kconfig"
 745
 746 # Definitions to make life easier
 747 config ARCH_ACORN
 748         bool
 749
 750 config PLAT_IOP
 751         bool
 752
 753 config PLAT_ORION
 754         bool
 755
 756 config PLAT_PXA
 757         bool
 758
 759 source arch/arm/mm/Kconfig
 760
 761 config IWMMXT
 762         bool "Enable iWMMXt support"
 763         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 764         default y if PXA27x || PXA3xx || ARCH_MMP
 765         help
 766           Enable support for iWMMXt context switching at run time if
 767           running on a CPU that supports it.
 768
 769 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 770 config XSCALE_PMU
 771         bool
 772         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 773         default y
 774
 775 if !MMU
 776 source "arch/arm/Kconfig-nommu"
 777 endif
 778
 779 config ARM_ERRATA_411920
 780         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 781         depends on CPU_V6 && !SMP
 782         help
 783           Invalidation of the Instruction Cache operation can
 784           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 785           It does not affect the MPCore. This option enables the ARM Ltd.
 786           recommended workaround.
 787
 788 config ARM_ERRATA_430973
 789         bool "ARM errata: Stale prediction on replaced interworking branch"
 790         depends on CPU_V7
 791         help
 792           This option enables the workaround for the 430973 Cortex-A8
 793           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 794           interworking branch is replaced with another code sequence at the
 795           same virtual address, whether due to self-modifying code or virtual
 796           to physical address re-mapping, Cortex-A8 does not recover from the
 797           stale interworking branch prediction. This results in Cortex-A8
 798           executing the new code sequence in the incorrect ARM or Thumb state.
 799           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 800           and also flushes the branch target cache at every context switch.
 801           Note that setting specific bits in the ACTLR register may not be
 802           available in non-secure mode.
 803
 804 config ARM_ERRATA_458693
 805         bool "ARM errata: Processor deadlock when a false hazard is created"
 806         depends on CPU_V7
 807         help
 808           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 809           erratum. For very specific sequences of memory operations, it is
 810           possible for a hazard condition intended for a cache line to instead
 811           be incorrectly associated with a different cache line. This false
 812           hazard might then cause a processor deadlock. The workaround enables
 813           the L1 caching of the NEON accesses and disables the PLD instruction
 814           in the ACTLR register. Note that setting specific bits in the ACTLR
 815           register may not be available in non-secure mode.
 816
 817 config ARM_ERRATA_460075
 818         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
 819         depends on CPU_V7
 820         help
 821           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
 822           erratum. Any asynchronous access to the L2 cache may encounter a
 823           situation in which recent store transactions to the L2 cache are lost
 824           and overwritten with stale memory contents from external memory. The
 825           workaround disables the write-allocate mode for the L2 cache via the
 826           ACTLR register. Note that setting specific bits in the ACTLR register
 827           may not be available in non-secure mode.
 828
 829 endmenu
 830
 831 source "arch/arm/common/Kconfig"
 832
 833 config FORCE_MAX_ZONEORDER
 834         int
 835         depends on SA1111
 836         default "9"
 837
 838 menu "Bus support"
 839
 840 config ARM_AMBA
 841         bool
 842
 843 config ISA
 844         bool
 845         help
 846           Find out whether you have ISA slots on your motherboard.  ISA is the
 847           name of a bus system, i.e. the way the CPU talks to the other stuff
 848           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 849           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 850           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 851
 852 # Select ISA DMA controller support
 853 config ISA_DMA
 854         bool
 855         select ISA_DMA_API
 856
 857 # Select ISA DMA interface
 858 config ISA_DMA_API
 859         bool
 860
 861 config PCI
 862         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 863         help
 864           Find out whether you have a PCI motherboard. PCI is the name of a
 865           bus system, i.e. the way the CPU talks to the other stuff inside
 866           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 867           VESA. If you have PCI, say Y, otherwise N.
 868
 869 config PCI_SYSCALL
 870         def_bool PCI
 871
 872 # Select the host bridge type
 873 config PCI_HOST_VIA82C505
 874         bool
 875         depends on PCI && ARCH_SHARK
 876         default y
 877
 878 config PCI_HOST_ITE8152
 879         bool
 880         depends on PCI && MACH_ARMCORE
 881         default y
 882         select DMABOUNCE
 883
 884 source "drivers/pci/Kconfig"
 885
 886 source "drivers/pcmcia/Kconfig"
 887
 888 endmenu
 889
 890 menu "Kernel Features"
 891
 892 source "kernel/time/Kconfig"
 893
 894 config SMP
 895         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 896         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
 897                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
 898         depends on GENERIC_CLOCKEVENTS
 899         select USE_GENERIC_SMP_HELPERS
 900         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
 901         help
 902           This enables support for systems with more than one CPU. If you have
 903           a system with only one CPU, like most personal computers, say N. If
 904           you have a system with more than one CPU, say Y.
 905
 906           If you say N here, the kernel will run on single and multiprocessor
 907           machines, but will use only one CPU of a multiprocessor machine. If
 908           you say Y here, the kernel will run on many, but not all, single
 909           processor machines. On a single processor machine, the kernel will
 910           run faster if you say N here.
 911
 912           See also <file:Documentation/i386/IO-APIC.txt>,
 913           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 914           <http://www.linuxdoc.org/docs.html#howto>.
 915
 916           If you don't know what to do here, say N.
 917
 918 config HAVE_ARM_SCU
 919         bool
 920         depends on SMP
 921         help
 922           This option enables support for the ARM system coherency unit
 923
 924 config HAVE_ARM_TWD
 925         bool
 926         depends on SMP
 927         help
 928           This options enables support for the ARM timer and watchdog unit
 929
 930 choice
 931         prompt "Memory split"
 932         default VMSPLIT_3G
 933         help
 934           Select the desired split between kernel and user memory.
 935
 936           If you are not absolutely sure what you are doing, leave this
 937           option alone!
 938
 939         config VMSPLIT_3G
 940                 bool "3G/1G user/kernel split"
 941         config VMSPLIT_2G
 942                 bool "2G/2G user/kernel split"
 943         config VMSPLIT_1G
 944                 bool "1G/3G user/kernel split"
 945 endchoice
 946
 947 config PAGE_OFFSET
 948         hex
 949         default 0x40000000 if VMSPLIT_1G
 950         default 0x80000000 if VMSPLIT_2G
 951         default 0xC0000000
 952
 953 config NR_CPUS
 954         int "Maximum number of CPUs (2-32)"
 955         range 2 32
 956         depends on SMP
 957         default "4"
 958
 959 config HOTPLUG_CPU
 960         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 961         depends on SMP && HOTPLUG && EXPERIMENTAL
 962         help
 963           Say Y here to experiment with turning CPUs off and on.  CPUs
 964           can be controlled through /sys/devices/system/cpu.
 965
 966 config LOCAL_TIMERS
 967         bool "Use local timer interrupts"
 968         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
 969                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
 970         default y
 971         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
 972         help
 973           Enable support for local timers on SMP platforms, rather then the
 974           legacy IPI broadcast method.  Local timers allows the system
 975           accounting to be spread across the timer interval, preventing a
 976           "thundering herd" at every timer tick.
 977
 978 config PREEMPT
 979         bool "Preemptible Kernel (EXPERIMENTAL)"
 980         depends on EXPERIMENTAL
 981         help
 982           This option reduces the latency of the kernel when reacting to
 983           real-time or interactive events by allowing a low priority process to
 984           be preempted even if it is in kernel mode executing a system call.
 985           This allows applications to run more reliably even when the system is
 986           under load.
 987
 988           Say Y here if you are building a kernel for a desktop, embedded
 989           or real-time system.  Say N if you are unsure.
 990
 991 config HZ
 992         int
 993         default 128 if ARCH_L7200
 994         default 200 if ARCH_EBSA110 || ARCH_S3C2410
 995         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
 996         default AT91_TIMER_HZ if ARCH_AT91
 997         default 100
 998
 999 config AEABI
1000         bool "Use the ARM EABI to compile the kernel"
1001         help
1002           This option allows for the kernel to be compiled using the latest
1003           ARM ABI (aka EABI).  This is only useful if you are using a user
1004           space environment that is also compiled with EABI.
1005
1006           Since there are major incompatibilities between the legacy ABI and
1007           EABI, especially with regard to structure member alignment, this
1008           option also changes the kernel syscall calling convention to
1009           disambiguate both ABIs and allow for backward compatibility support
1010           (selected with CONFIG_OABI_COMPAT).
1011
1012           To use this you need GCC version 4.0.0 or later.
1013
1014 config OABI_COMPAT
1015         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1016         depends on AEABI && EXPERIMENTAL
1017         default y
1018         help
1019           This option preserves the old syscall interface along with the
1020           new (ARM EABI) one. It also provides a compatibility layer to
1021           intercept syscalls that have structure arguments which layout
1022           in memory differs between the legacy ABI and the new ARM EABI
1023           (only for non "thumb" binaries). This option adds a tiny
1024           overhead to all syscalls and produces a slightly larger kernel.
1025           If you know you'll be using only pure EABI user space then you
1026           can say N here. If this option is not selected and you attempt
1027           to execute a legacy ABI binary then the result will be
1028           UNPREDICTABLE (in fact it can be predicted that it won't work
1029           at all). If in doubt say Y.
1030
1031 config ARCH_HAS_HOLES_MEMORYMODEL
1032         bool
1033
1034 # Discontigmem is deprecated
1035 config ARCH_DISCONTIGMEM_ENABLE
1036         bool
1037
1038 config ARCH_SPARSEMEM_ENABLE
1039         bool
1040
1041 config ARCH_SPARSEMEM_DEFAULT
1042         def_bool ARCH_SPARSEMEM_ENABLE
1043
1044 config ARCH_SELECT_MEMORY_MODEL
1045         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1046
1047 config NODES_SHIFT
1048         int
1049         default "4" if ARCH_LH7A40X
1050         default "2"
1051         depends on NEED_MULTIPLE_NODES
1052
1053 config HIGHMEM
1054         bool "High Memory Support (EXPERIMENTAL)"
1055         depends on MMU && EXPERIMENTAL
1056         help
1057           The address space of ARM processors is only 4 Gigabytes large
1058           and it has to accommodate user address space, kernel address
1059           space as well as some memory mapped IO. That means that, if you
1060           have a large amount of physical memory and/or IO, not all of the
1061           memory can be "permanently mapped" by the kernel. The physical
1062           memory that is not permanently mapped is called "high memory".
1063
1064           Depending on the selected kernel/user memory split, minimum
1065           vmalloc space and actual amount of RAM, you may not need this
1066           option which should result in a slightly faster kernel.
1067
1068           If unsure, say n.
1069
1070 source "mm/Kconfig"
1071
1072 config LEDS
1073         bool "Timer and CPU usage LEDs"
1074         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1075                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1076                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1077                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1078                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1079                    ARCH_AT91 || ARCH_DAVINCI || \
1080                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1081         help
1082           If you say Y here, the LEDs on your machine will be used
1083           to provide useful information about your current system status.
1084
1085           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1086           be able to select which LEDs are active using the options below. If
1087           you are compiling a kernel for the EBSA-110 or the LART however, the
1088           red LED will simply flash regularly to indicate that the system is
1089           still functional. It is safe to say Y here if you have a CATS
1090           system, but the driver will do nothing.
1091
1092 config LEDS_TIMER
1093         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1094                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1095                             || MACH_OMAP_PERSEUS2
1096         depends on LEDS
1097         depends on !GENERIC_CLOCKEVENTS
1098         default y if ARCH_EBSA110
1099         help
1100           If you say Y here, one of the system LEDs (the green one on the
1101           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1102           will flash regularly to indicate that the system is still
1103           operational. This is mainly useful to kernel hackers who are
1104           debugging unstable kernels.
1105
1106           The LART uses the same LED for both Timer LED and CPU usage LED
1107           functions. You may choose to use both, but the Timer LED function
1108           will overrule the CPU usage LED.
1109
1110 config LEDS_CPU
1111         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1112                         !ARCH_OMAP) \
1113                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1114                         || MACH_OMAP_PERSEUS2
1115         depends on LEDS
1116         help
1117           If you say Y here, the red LED will be used to give a good real
1118           time indication of CPU usage, by lighting whenever the idle task
1119           is not currently executing.
1120
1121           The LART uses the same LED for both Timer LED and CPU usage LED
1122           functions. You may choose to use both, but the Timer LED function
1123           will overrule the CPU usage LED.
1124
1125 config ALIGNMENT_TRAP
1126         bool
1127         depends on CPU_CP15_MMU
1128         default y if !ARCH_EBSA110
1129         help
1130           ARM processors cannot fetch/store information which is not
1131           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1132           address divisible by 4. On 32-bit ARM processors, these non-aligned
1133           fetch/store instructions will be emulated in software if you say
1134           here, which has a severe performance impact. This is necessary for
1135           correct operation of some network protocols. With an IP-only
1136           configuration it is safe to say N, otherwise say Y.
1137
1138 config UACCESS_WITH_MEMCPY
1139         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1140         depends on MMU && EXPERIMENTAL
1141         default y if CPU_FEROCEON
1142         help
1143           Implement faster copy_to_user and clear_user methods for CPU
1144           cores where a 8-word STM instruction give significantly higher
1145           memory write throughput than a sequence of individual 32bit stores.
1146
1147           A possible side effect is a slight increase in scheduling latency
1148           between threads sharing the same address space if they invoke
1149           such copy operations with large buffers.
1150
1151           However, if the CPU data cache is using a write-allocate mode,
1152           this option is unlikely to provide any performance gain.
1153
1154 endmenu
1155
1156 menu "Boot options"
1157
1158 # Compressed boot loader in ROM.  Yes, we really want to ask about
1159 # TEXT and BSS so we preserve their values in the config files.
1160 config ZBOOT_ROM_TEXT
1161         hex "Compressed ROM boot loader base address"
1162         default "0"
1163         help
1164           The physical address at which the ROM-able zImage is to be
1165           placed in the target.  Platforms which normally make use of
1166           ROM-able zImage formats normally set this to a suitable
1167           value in their defconfig file.
1168
1169           If ZBOOT_ROM is not enabled, this has no effect.
1170
1171 config ZBOOT_ROM_BSS
1172         hex "Compressed ROM boot loader BSS address"
1173         default "0"
1174         help
1175           The base address of an area of read/write memory in the target
1176           for the ROM-able zImage which must be available while the
1177           decompressor is running. It must be large enough to hold the
1178           entire decompressed kernel plus an additional 128 KiB.
1179           Platforms which normally make use of ROM-able zImage formats
1180           normally set this to a suitable value in their defconfig file.
1181
1182           If ZBOOT_ROM is not enabled, this has no effect.
1183
1184 config ZBOOT_ROM
1185         bool "Compressed boot loader in ROM/flash"
1186         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1187         help
1188           Say Y here if you intend to execute your compressed kernel image
1189           (zImage) directly from ROM or flash.  If unsure, say N.
1190
1191 config CMDLINE
1192         string "Default kernel command string"
1193         default ""
1194         help
1195           On some architectures (EBSA110 and CATS), there is currently no way
1196           for the boot loader to pass arguments to the kernel. For these
1197           architectures, you should supply some command-line options at build
1198           time by entering them here. As a minimum, you should specify the
1199           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1200
1201 config XIP_KERNEL
1202         bool "Kernel Execute-In-Place from ROM"
1203         depends on !ZBOOT_ROM
1204         help
1205           Execute-In-Place allows the kernel to run from non-volatile storage
1206           directly addressable by the CPU, such as NOR flash. This saves RAM
1207           space since the text section of the kernel is not loaded from flash
1208           to RAM.  Read-write sections, such as the data section and stack,
1209           are still copied to RAM.  The XIP kernel is not compressed since
1210           it has to run directly from flash, so it will take more space to
1211           store it.  The flash address used to link the kernel object files,
1212           and for storing it, is configuration dependent. Therefore, if you
1213           say Y here, you must know the proper physical address where to
1214           store the kernel image depending on your own flash memory usage.
1215
1216           Also note that the make target becomes "make xipImage" rather than
1217           "make zImage" or "make Image".  The final kernel binary to put in
1218           ROM memory will be arch/arm/boot/xipImage.
1219
1220           If unsure, say N.
1221
1222 config XIP_PHYS_ADDR
1223         hex "XIP Kernel Physical Location"
1224         depends on XIP_KERNEL
1225         default "0x00080000"
1226         help
1227           This is the physical address in your flash memory the kernel will
1228           be linked for and stored to.  This address is dependent on your
1229           own flash usage.
1230
1231 config KEXEC
1232         bool "Kexec system call (EXPERIMENTAL)"
1233         depends on EXPERIMENTAL
1234         help
1235           kexec is a system call that implements the ability to shutdown your
1236           current kernel, and to start another kernel.  It is like a reboot
1237           but it is independent of the system firmware.   And like a reboot
1238           you can start any kernel with it, not just Linux.
1239
1240           It is an ongoing process to be certain the hardware in a machine
1241           is properly shutdown, so do not be surprised if this code does not
1242           initially work for you.  It may help to enable device hotplugging
1243           support.
1244
1245 config ATAGS_PROC
1246         bool "Export atags in procfs"
1247         depends on KEXEC
1248         default y
1249         help
1250           Should the atags used to boot the kernel be exported in an "atags"
1251           file in procfs. Useful with kexec.
1252
1253 endmenu
1254
1255 menu "CPU Power Management"
1256
1257 if ARCH_HAS_CPUFREQ
1258
1259 source "drivers/cpufreq/Kconfig"
1260
1261 config CPU_FREQ_SA1100
1262         bool
1263         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1264         default y
1265
1266 config CPU_FREQ_SA1110
1267         bool
1268         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1269         default y
1270
1271 config CPU_FREQ_INTEGRATOR
1272         tristate "CPUfreq driver for ARM Integrator CPUs"
1273         depends on ARCH_INTEGRATOR && CPU_FREQ
1274         default y
1275         help
1276           This enables the CPUfreq driver for ARM Integrator CPUs.
1277
1278           For details, take a look at <file:Documentation/cpu-freq>.
1279
1280           If in doubt, say Y.
1281
1282 config CPU_FREQ_PXA
1283         bool
1284         depends on CPU_FREQ && ARCH_PXA && PXA25x
1285         default y
1286         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1287
1288 config CPU_FREQ_S3C64XX
1289         bool "CPUfreq support for Samsung S3C64XX CPUs"
1290         depends on CPU_FREQ && CPU_S3C6410
1291
1292 config CPU_FREQ_S3C
1293         bool
1294         help
1295           Internal configuration node for common cpufreq on Samsung SoC
1296
1297 config CPU_FREQ_S3C24XX
1298         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1299         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1300         select CPU_FREQ_S3C
1301         help
1302           This enables the CPUfreq driver for the Samsung S3C24XX family
1303           of CPUs.
1304
1305           For details, take a look at <file:Documentation/cpu-freq>.
1306
1307           If in doubt, say N.
1308
1309 config CPU_FREQ_S3C24XX_PLL
1310         bool "Support CPUfreq changing of PLL frequency"
1311         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1312         help
1313           Compile in support for changing the PLL frequency from the
1314           S3C24XX series CPUfreq driver. The PLL takes time to settle
1315           after a frequency change, so by default it is not enabled.
1316
1317           This also means that the PLL tables for the selected CPU(s) will
1318           be built which may increase the size of the kernel image.
1319
1320 config CPU_FREQ_S3C24XX_DEBUG
1321         bool "Debug CPUfreq Samsung driver core"
1322         depends on CPU_FREQ_S3C24XX
1323         help
1324           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1325
1326 config CPU_FREQ_S3C24XX_IODEBUG
1327         bool "Debug CPUfreq Samsung driver IO timing"
1328         depends on CPU_FREQ_S3C24XX
1329         help
1330           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1331
1332 config CPU_FREQ_S3C24XX_DEBUGFS
1333         bool "Export debugfs for CPUFreq"
1334         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1335         help
1336           Export status information via debugfs.
1337
1338 endif
1339
1340 source "drivers/cpuidle/Kconfig"
1341
1342 endmenu
1343
1344 menu "Floating point emulation"
1345
1346 comment "At least one emulation must be selected"
1347
1348 config FPE_NWFPE
1349         bool "NWFPE math emulation"
1350         depends on !AEABI || OABI_COMPAT
1351         ---help---
1352           Say Y to include the NWFPE floating point emulator in the kernel.
1353           This is necessary to run most binaries. Linux does not currently
1354           support floating point hardware so you need to say Y here even if
1355           your machine has an FPA or floating point co-processor podule.
1356
1357           You may say N here if you are going to load the Acorn FPEmulator
1358           early in the bootup.
1359
1360 config FPE_NWFPE_XP
1361         bool "Support extended precision"
1362         depends on FPE_NWFPE
1363         help
1364           Say Y to include 80-bit support in the kernel floating-point
1365           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1366           Note that gcc does not generate 80-bit operations by default,
1367           so in most cases this option only enlarges the size of the
1368           floating point emulator without any good reason.
1369
1370           You almost surely want to say N here.
1371
1372 config FPE_FASTFPE
1373         bool "FastFPE math emulation (EXPERIMENTAL)"
1374         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1375         ---help---
1376           Say Y here to include the FAST floating point emulator in the kernel.
1377           This is an experimental much faster emulator which now also has full
1378           precision for the mantissa.  It does not support any exceptions.
1379           It is very simple, and approximately 3-6 times faster than NWFPE.
1380
1381           It should be sufficient for most programs.  It may be not suitable
1382           for scientific calculations, but you have to check this for yourself.
1383           If you do not feel you need a faster FP emulation you should better
1384           choose NWFPE.
1385
1386 config VFP
1387         bool "VFP-format floating point maths"
1388         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1389         help
1390           Say Y to include VFP support code in the kernel. This is needed
1391           if your hardware includes a VFP unit.
1392
1393           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1394           release notes and additional status information.
1395
1396           Say N if your target does not have VFP hardware.
1397
1398 config VFPv3
1399         bool
1400         depends on VFP
1401         default y if CPU_V7
1402
1403 config NEON
1404         bool "Advanced SIMD (NEON) Extension support"
1405         depends on VFPv3 && CPU_V7
1406         help
1407           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1408           Extension.
1409
1410 endmenu
1411
1412 menu "Userspace binary formats"
1413
1414 source "fs/Kconfig.binfmt"
1415
1416 config ARTHUR
1417         tristate "RISC OS personality"
1418         depends on !AEABI
1419         help
1420           Say Y here to include the kernel code necessary if you want to run
1421           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1422           experimental; if this sounds frightening, say N and sleep in peace.
1423           You can also say M here to compile this support as a module (which
1424           will be called arthur).
1425
1426 endmenu
1427
1428 menu "Power management options"
1429
1430 source "kernel/power/Kconfig"
1431
1432 config ARCH_SUSPEND_POSSIBLE
1433         def_bool y
1434
1435 endmenu
1436
1437 source "net/Kconfig"
1438
1439 menu "Device Drivers"
1440
1441 source "drivers/base/Kconfig"
1442
1443 source "drivers/connector/Kconfig"
1444
1445 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1446 source "drivers/mtd/Kconfig"
1447 endif
1448
1449 source "drivers/parport/Kconfig"
1450
1451 source "drivers/pnp/Kconfig"
1452
1453 source "drivers/block/Kconfig"
1454
1455 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1456
1457 source "drivers/misc/Kconfig"
1458
1459 source "drivers/ide/Kconfig"
1460
1461 source "drivers/scsi/Kconfig"
1462
1463 source "drivers/ata/Kconfig"
1464
1465 source "drivers/md/Kconfig"
1466
1467 source "drivers/message/fusion/Kconfig"
1468
1469 source "drivers/ieee1394/Kconfig"
1470
1471 source "drivers/message/i2o/Kconfig"
1472
1473 source "drivers/net/Kconfig"
1474
1475 source "drivers/isdn/Kconfig"
1476
1477 # input before char - char/joystick depends on it. As does USB.
1478
1479 source "drivers/input/Kconfig"
1480
1481 source "drivers/char/Kconfig"
1482
1483 source "drivers/i2c/Kconfig"
1484
1485 source "drivers/spi/Kconfig"
1486
1487 source "drivers/gpio/Kconfig"
1488
1489 source "drivers/w1/Kconfig"
1490
1491 source "drivers/power/Kconfig"
1492
1493 source "drivers/hwmon/Kconfig"
1494
1495 source "drivers/thermal/Kconfig"
1496
1497 source "drivers/watchdog/Kconfig"
1498
1499 source "drivers/ssb/Kconfig"
1500
1501 #source "drivers/l3/Kconfig"
1502
1503 source "drivers/mfd/Kconfig"
1504
1505 source "drivers/media/Kconfig"
1506
1507 source "drivers/video/Kconfig"
1508
1509 source "sound/Kconfig"
1510
1511 source "drivers/hid/Kconfig"
1512
1513 source "drivers/usb/Kconfig"
1514
1515 source "drivers/uwb/Kconfig"
1516
1517 source "drivers/mmc/Kconfig"
1518
1519 source "drivers/memstick/Kconfig"
1520
1521 source "drivers/accessibility/Kconfig"
1522
1523 source "drivers/leds/Kconfig"
1524
1525 source "drivers/rtc/Kconfig"
1526
1527 source "drivers/dma/Kconfig"
1528
1529 source "drivers/dca/Kconfig"
1530
1531 source "drivers/auxdisplay/Kconfig"
1532
1533 source "drivers/regulator/Kconfig"
1534
1535 source "drivers/uio/Kconfig"
1536
1537 source "drivers/staging/Kconfig"
1538
1539 endmenu
1540
1541 source "fs/Kconfig"
1542
1543 source "arch/arm/Kconfig.debug"
1544
1545 source "security/Kconfig"
1546
1547 source "crypto/Kconfig"
1548
1549 source "lib/Kconfig"