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 NO_IOPORT
  50         bool
  51
  52 config EISA
  53         bool
  54         ---help---
  55           The Extended Industry Standard Architecture (EISA) bus was
  56           developed as an open alternative to the IBM MicroChannel bus.
  57
  58           The EISA bus provided some of the features of the IBM MicroChannel
  59           bus while maintaining backward compatibility with cards made for
  60           the older ISA bus.  The EISA bus saw limited use between 1988 and
  61           1995 when it was made obsolete by the PCI bus.
  62
  63           Say Y here if you are building a kernel for an EISA-based machine.
  64
  65           Otherwise, say N.
  66
  67 config SBUS
  68         bool
  69
  70 config MCA
  71         bool
  72         help
  73           MicroChannel Architecture is found in some IBM PS/2 machines and
  74           laptops.  It is a bus system similar to PCI or ISA. See
  75           <file:Documentation/mca.txt> (and especially the web page given
  76           there) before attempting to build an MCA bus kernel.
  77
  78 config GENERIC_HARDIRQS
  79         bool
  80         default y
  81
  82 config STACKTRACE_SUPPORT
  83         bool
  84         default y
  85
  86 config HAVE_LATENCYTOP_SUPPORT
  87         bool
  88         depends on !SMP
  89         default y
  90
  91 config LOCKDEP_SUPPORT
  92         bool
  93         default y
  94
  95 config TRACE_IRQFLAGS_SUPPORT
  96         bool
  97         default y
  98
  99 config HARDIRQS_SW_RESEND
 100         bool
 101         default y
 102
 103 config GENERIC_IRQ_PROBE
 104         bool
 105         default y
 106
 107 config GENERIC_LOCKBREAK
 108         bool
 109         default y
 110         depends on SMP && PREEMPT
 111
 112 config RWSEM_GENERIC_SPINLOCK
 113         bool
 114         default y
 115
 116 config RWSEM_XCHGADD_ALGORITHM
 117         bool
 118
 119 config ARCH_HAS_ILOG2_U32
 120         bool
 121
 122 config ARCH_HAS_ILOG2_U64
 123         bool
 124
 125 config ARCH_HAS_CPUFREQ
 126         bool
 127         help
 128           Internal node to signify that the ARCH has CPUFREQ support
 129           and that the relevant menu configurations are displayed for
 130           it.
 131
 132 config GENERIC_HWEIGHT
 133         bool
 134         default y
 135
 136 config GENERIC_CALIBRATE_DELAY
 137         bool
 138         default y
 139
 140 config ARCH_MAY_HAVE_PC_FDC
 141         bool
 142
 143 config ZONE_DMA
 144         bool
 145
 146 config GENERIC_ISA_DMA
 147         bool
 148
 149 config FIQ
 150         bool
 151
 152 config ARCH_MTD_XIP
 153         bool
 154
 155 config GENERIC_HARDIRQS_NO__DO_IRQ
 156         def_bool y
 157
 158 if OPROFILE
 159
 160 config OPROFILE_ARMV6
 161         def_bool y
 162         depends on CPU_V6 && !SMP
 163         select OPROFILE_ARM11_CORE
 164
 165 config OPROFILE_MPCORE
 166         def_bool y
 167         depends on CPU_V6 && SMP
 168         select OPROFILE_ARM11_CORE
 169
 170 config OPROFILE_ARM11_CORE
 171         bool
 172
 173 config OPROFILE_ARMV7
 174         def_bool y
 175         depends on CPU_V7 && !SMP
 176         bool
 177
 178 endif
 179
 180 config VECTORS_BASE
 181         hex
 182         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 183         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 184         default 0x00000000
 185         help
 186           The base address of exception vectors.
 187
 188 source "init/Kconfig"
 189
 190 source "kernel/Kconfig.freezer"
 191
 192 menu "System Type"
 193
 194 config MMU
 195         bool "MMU-based Paged Memory Management Support"
 196         default y
 197         help
 198           Select if you want MMU-based virtualised addressing space
 199           support by paged memory management. If unsure, say 'Y'.
 200
 201 choice
 202         prompt "ARM system type"
 203         default ARCH_VERSATILE
 204
 205 config ARCH_AAEC2000
 206         bool "Agilent AAEC-2000 based"
 207         select CPU_ARM920T
 208         select ARM_AMBA
 209         select HAVE_CLK
 210         help
 211           This enables support for systems based on the Agilent AAEC-2000
 212
 213 config ARCH_INTEGRATOR
 214         bool "ARM Ltd. Integrator family"
 215         select ARM_AMBA
 216         select ARCH_HAS_CPUFREQ
 217         select HAVE_CLK
 218         select COMMON_CLKDEV
 219         select ICST525
 220         help
 221           Support for ARM's Integrator platform.
 222
 223 config ARCH_REALVIEW
 224         bool "ARM Ltd. RealView family"
 225         select ARM_AMBA
 226         select HAVE_CLK
 227         select COMMON_CLKDEV
 228         select ICST307
 229         select GENERIC_TIME
 230         select GENERIC_CLOCKEVENTS
 231         help
 232           This enables support for ARM Ltd RealView boards.
 233
 234 config ARCH_VERSATILE
 235         bool "ARM Ltd. Versatile family"
 236         select ARM_AMBA
 237         select ARM_VIC
 238         select HAVE_CLK
 239         select COMMON_CLKDEV
 240         select ICST307
 241         select GENERIC_TIME
 242         select GENERIC_CLOCKEVENTS
 243         help
 244           This enables support for ARM Ltd Versatile board.
 245
 246 config ARCH_AT91
 247         bool "Atmel AT91"
 248         select GENERIC_GPIO
 249         select ARCH_REQUIRE_GPIOLIB
 250         select HAVE_CLK
 251         help
 252           This enables support for systems based on the Atmel AT91RM9200,
 253           AT91SAM9 and AT91CAP9 processors.
 254
 255 config ARCH_CLPS711X
 256         bool "Cirrus Logic CLPS711x/EP721x-based"
 257         select CPU_ARM720T
 258         help
 259           Support for Cirrus Logic 711x/721x based boards.
 260
 261 config ARCH_GEMINI
 262         bool "Cortina Systems Gemini"
 263         select CPU_FA526
 264         select GENERIC_GPIO
 265         select ARCH_REQUIRE_GPIOLIB
 266         help
 267           Support for the Cortina Systems Gemini family SoCs
 268
 269 config ARCH_EBSA110
 270         bool "EBSA-110"
 271         select CPU_SA110
 272         select ISA
 273         select NO_IOPORT
 274         help
 275           This is an evaluation board for the StrongARM processor available
 276           from Digital. It has limited hardware on-board, including an
 277           Ethernet interface, two PCMCIA sockets, two serial ports and a
 278           parallel port.
 279
 280 config ARCH_EP93XX
 281         bool "EP93xx-based"
 282         select CPU_ARM920T
 283         select ARM_AMBA
 284         select ARM_VIC
 285         select GENERIC_GPIO
 286         select HAVE_CLK
 287         select COMMON_CLKDEV
 288         select ARCH_REQUIRE_GPIOLIB
 289         select ARCH_HAS_HOLES_MEMORYMODEL
 290         help
 291           This enables support for the Cirrus EP93xx series of CPUs.
 292
 293 config ARCH_FOOTBRIDGE
 294         bool "FootBridge"
 295         select CPU_SA110
 296         select FOOTBRIDGE
 297         help
 298           Support for systems based on the DC21285 companion chip
 299           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 300
 301 config ARCH_MXC
 302         bool "Freescale MXC/iMX-based"
 303         select GENERIC_TIME
 304         select GENERIC_CLOCKEVENTS
 305         select ARCH_MTD_XIP
 306         select GENERIC_GPIO
 307         select ARCH_REQUIRE_GPIOLIB
 308         select HAVE_CLK
 309         help
 310           Support for Freescale MXC/iMX-based family of processors
 311
 312 config ARCH_STMP3XXX
 313         bool "Freescale STMP3xxx"
 314         select CPU_ARM926T
 315         select HAVE_CLK
 316         select COMMON_CLKDEV
 317         select ARCH_REQUIRE_GPIOLIB
 318         select GENERIC_TIME
 319         select GENERIC_CLOCKEVENTS
 320         select GENERIC_GPIO
 321         select USB_ARCH_HAS_EHCI
 322         help
 323           Support for systems based on the Freescale 3xxx CPUs.
 324
 325 config ARCH_NETX
 326         bool "Hilscher NetX based"
 327         select CPU_ARM926T
 328         select ARM_VIC
 329         select GENERIC_CLOCKEVENTS
 330         select GENERIC_TIME
 331         help
 332           This enables support for systems based on the Hilscher NetX Soc
 333
 334 config ARCH_H720X
 335         bool "Hynix HMS720x-based"
 336         select CPU_ARM720T
 337         select ISA_DMA_API
 338         help
 339           This enables support for systems based on the Hynix HMS720x
 340
 341 config ARCH_IOP13XX
 342         bool "IOP13xx-based"
 343         depends on MMU
 344         select CPU_XSC3
 345         select PLAT_IOP
 346         select PCI
 347         select ARCH_SUPPORTS_MSI
 348         select VMSPLIT_1G
 349         help
 350           Support for Intel's IOP13XX (XScale) family of processors.
 351
 352 config ARCH_IOP32X
 353         bool "IOP32x-based"
 354         depends on MMU
 355         select CPU_XSCALE
 356         select PLAT_IOP
 357         select PCI
 358         select GENERIC_GPIO
 359         select ARCH_REQUIRE_GPIOLIB
 360         help
 361           Support for Intel's 80219 and IOP32X (XScale) family of
 362           processors.
 363
 364 config ARCH_IOP33X
 365         bool "IOP33x-based"
 366         depends on MMU
 367         select CPU_XSCALE
 368         select PLAT_IOP
 369         select PCI
 370         select GENERIC_GPIO
 371         select ARCH_REQUIRE_GPIOLIB
 372         help
 373           Support for Intel's IOP33X (XScale) family of processors.
 374
 375 config ARCH_IXP23XX
 376         bool "IXP23XX-based"
 377         depends on MMU
 378         select CPU_XSC3
 379         select PCI
 380         help
 381           Support for Intel's IXP23xx (XScale) family of processors.
 382
 383 config ARCH_IXP2000
 384         bool "IXP2400/2800-based"
 385         depends on MMU
 386         select CPU_XSCALE
 387         select PCI
 388         help
 389           Support for Intel's IXP2400/2800 (XScale) family of processors.
 390
 391 config ARCH_IXP4XX
 392         bool "IXP4xx-based"
 393         depends on MMU
 394         select CPU_XSCALE
 395         select GENERIC_GPIO
 396         select GENERIC_TIME
 397         select GENERIC_CLOCKEVENTS
 398         select DMABOUNCE if PCI
 399         help
 400           Support for Intel's IXP4XX (XScale) family of processors.
 401
 402 config ARCH_L7200
 403         bool "LinkUp-L7200"
 404         select CPU_ARM720T
 405         select FIQ
 406         help
 407           Say Y here if you intend to run this kernel on a LinkUp Systems
 408           L7200 Software Development Board which uses an ARM720T processor.
 409           Information on this board can be obtained at:
 410
 411           <http://www.linkupsys.com/>
 412
 413           If you have any questions or comments about the Linux kernel port
 414           to this board, send e-mail to <sjhill@cotw.com>.
 415
 416 config ARCH_KIRKWOOD
 417         bool "Marvell Kirkwood"
 418         select CPU_FEROCEON
 419         select PCI
 420         select GENERIC_GPIO
 421         select ARCH_REQUIRE_GPIOLIB
 422         select GENERIC_TIME
 423         select GENERIC_CLOCKEVENTS
 424         select PLAT_ORION
 425         help
 426           Support for the following Marvell Kirkwood series SoCs:
 427           88F6180, 88F6192 and 88F6281.
 428
 429 config ARCH_LOKI
 430         bool "Marvell Loki (88RC8480)"
 431         select CPU_FEROCEON
 432         select GENERIC_TIME
 433         select GENERIC_CLOCKEVENTS
 434         select PLAT_ORION
 435         help
 436           Support for the Marvell Loki (88RC8480) SoC.
 437
 438 config ARCH_MV78XX0
 439         bool "Marvell MV78xx0"
 440         select CPU_FEROCEON
 441         select PCI
 442         select GENERIC_GPIO
 443         select ARCH_REQUIRE_GPIOLIB
 444         select GENERIC_TIME
 445         select GENERIC_CLOCKEVENTS
 446         select PLAT_ORION
 447         help
 448           Support for the following Marvell MV78xx0 series SoCs:
 449           MV781x0, MV782x0.
 450
 451 config ARCH_ORION5X
 452         bool "Marvell Orion"
 453         depends on MMU
 454         select CPU_FEROCEON
 455         select PCI
 456         select GENERIC_GPIO
 457         select ARCH_REQUIRE_GPIOLIB
 458         select GENERIC_TIME
 459         select GENERIC_CLOCKEVENTS
 460         select PLAT_ORION
 461         help
 462           Support for the following Marvell Orion 5x series SoCs:
 463           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 464           Orion-2 (5281), Orion-1-90 (6183).
 465
 466 config ARCH_MMP
 467         bool "Marvell PXA168/910"
 468         depends on MMU
 469         select GENERIC_GPIO
 470         select ARCH_REQUIRE_GPIOLIB
 471         select HAVE_CLK
 472         select COMMON_CLKDEV
 473         select GENERIC_TIME
 474         select GENERIC_CLOCKEVENTS
 475         select TICK_ONESHOT
 476         select PLAT_PXA
 477         help
 478           Support for Marvell's PXA168/910 processor line.
 479
 480 config ARCH_KS8695
 481         bool "Micrel/Kendin KS8695"
 482         select CPU_ARM922T
 483         select GENERIC_GPIO
 484         select ARCH_REQUIRE_GPIOLIB
 485         help
 486           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 487           System-on-Chip devices.
 488
 489 config ARCH_NS9XXX
 490         bool "NetSilicon NS9xxx"
 491         select CPU_ARM926T
 492         select GENERIC_GPIO
 493         select GENERIC_TIME
 494         select GENERIC_CLOCKEVENTS
 495         select HAVE_CLK
 496         help
 497           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 498           System.
 499
 500           <http://www.digi.com/products/microprocessors/index.jsp>
 501
 502 config ARCH_W90X900
 503         bool "Nuvoton W90X900 CPU"
 504         select CPU_ARM926T
 505         select ARCH_REQUIRE_GPIOLIB
 506         select GENERIC_GPIO
 507         select COMMON_CLKDEV
 508         help
 509                 Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
 510                 can login www.mcuos.com or www.nuvoton.com to know more.
 511
 512 config ARCH_PNX4008
 513         bool "Philips Nexperia PNX4008 Mobile"
 514         select CPU_ARM926T
 515         select HAVE_CLK
 516         help
 517           This enables support for Philips PNX4008 mobile platform.
 518
 519 config ARCH_PXA
 520         bool "PXA2xx/PXA3xx-based"
 521         depends on MMU
 522         select ARCH_MTD_XIP
 523         select ARCH_HAS_CPUFREQ
 524         select GENERIC_GPIO
 525         select HAVE_CLK
 526         select COMMON_CLKDEV
 527         select ARCH_REQUIRE_GPIOLIB
 528         select GENERIC_TIME
 529         select GENERIC_CLOCKEVENTS
 530         select TICK_ONESHOT
 531         select PLAT_PXA
 532         help
 533           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 534
 535 config ARCH_MSM
 536         bool "Qualcomm MSM"
 537         select CPU_V6
 538         select GENERIC_TIME
 539         select GENERIC_CLOCKEVENTS
 540         help
 541           Support for Qualcomm MSM7K based systems.  This runs on the ARM11
 542           apps processor of the MSM7K and depends on a shared memory
 543           interface to the ARM9 modem processor which runs the baseband stack
 544           and controls some vital subsystems (clock and power control, etc).
 545
 546 config ARCH_RPC
 547         bool "RiscPC"
 548         select ARCH_ACORN
 549         select FIQ
 550         select TIMER_ACORN
 551         select ARCH_MAY_HAVE_PC_FDC
 552         select HAVE_PATA_PLATFORM
 553         select ISA_DMA_API
 554         select NO_IOPORT
 555         select ARCH_SPARSEMEM_ENABLE
 556         help
 557           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 558           CD-ROM interface, serial and parallel port, and the floppy drive.
 559
 560 config ARCH_SA1100
 561         bool "SA1100-based"
 562         select CPU_SA1100
 563         select ISA
 564         select ARCH_SPARSEMEM_ENABLE
 565         select ARCH_MTD_XIP
 566         select ARCH_HAS_CPUFREQ
 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 ARCH_HAS_CPUFREQ
 580         select HAVE_CLK
 581         help
 582           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 583           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 584           the Samsung SMDK2410 development board (and derivatives).
 585
 586 config ARCH_S3C64XX
 587         bool "Samsung S3C64XX"
 588         select GENERIC_GPIO
 589         select HAVE_CLK
 590         select ARCH_HAS_CPUFREQ
 591         help
 592           Samsung S3C64XX series based systems
 593
 594 config ARCH_S5PC1XX
 595         bool "Samsung S5PC1XX"
 596         select GENERIC_GPIO
 597         select HAVE_CLK
 598         select CPU_V7
 599         help
 600           Samsung S5PC1XX series based systems
 601
 602 config ARCH_SHARK
 603         bool "Shark"
 604         select CPU_SA110
 605         select ISA
 606         select ISA_DMA
 607         select ZONE_DMA
 608         select PCI
 609         help
 610           Support for the StrongARM based Digital DNARD machine, also known
 611           as "Shark" (<http://www.shark-linux.de/shark.html>).
 612
 613 config ARCH_LH7A40X
 614         bool "Sharp LH7A40X"
 615         select CPU_ARM922T
 616         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 617         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 618         help
 619           Say Y here for systems based on one of the Sharp LH7A40X
 620           System on a Chip processors.  These CPUs include an ARM922T
 621           core with a wide array of integrated devices for
 622           hand-held and low-power applications.
 623
 624 config ARCH_U300
 625         bool "ST-Ericsson U300 Series"
 626         depends on MMU
 627         select CPU_ARM926T
 628         select ARM_AMBA
 629         select ARM_VIC
 630         select GENERIC_TIME
 631         select GENERIC_CLOCKEVENTS
 632         select HAVE_CLK
 633         select COMMON_CLKDEV
 634         select GENERIC_GPIO
 635         help
 636           Support for ST-Ericsson U300 series mobile platforms.
 637
 638 config ARCH_DAVINCI
 639         bool "TI DaVinci"
 640         select CPU_ARM926T
 641         select GENERIC_TIME
 642         select GENERIC_CLOCKEVENTS
 643         select GENERIC_GPIO
 644         select ARCH_REQUIRE_GPIOLIB
 645         select HAVE_CLK
 646         select ZONE_DMA
 647         select HAVE_IDE
 648         select COMMON_CLKDEV
 649         select GENERIC_ALLOCATOR
 650         help
 651           Support for TI's DaVinci platform.
 652
 653 config ARCH_OMAP
 654         bool "TI OMAP"
 655         select GENERIC_GPIO
 656         select HAVE_CLK
 657         select ARCH_REQUIRE_GPIOLIB
 658         select ARCH_HAS_CPUFREQ
 659         select GENERIC_TIME
 660         select GENERIC_CLOCKEVENTS
 661         help
 662           Support for TI's OMAP platform (OMAP1 and OMAP2).
 663
 664 endchoice
 665
 666 source "arch/arm/mach-clps711x/Kconfig"
 667
 668 source "arch/arm/mach-ep93xx/Kconfig"
 669
 670 source "arch/arm/mach-footbridge/Kconfig"
 671
 672 source "arch/arm/mach-gemini/Kconfig"
 673
 674 source "arch/arm/mach-integrator/Kconfig"
 675
 676 source "arch/arm/mach-iop32x/Kconfig"
 677
 678 source "arch/arm/mach-iop33x/Kconfig"
 679
 680 source "arch/arm/mach-iop13xx/Kconfig"
 681
 682 source "arch/arm/mach-ixp4xx/Kconfig"
 683
 684 source "arch/arm/mach-ixp2000/Kconfig"
 685
 686 source "arch/arm/mach-ixp23xx/Kconfig"
 687
 688 source "arch/arm/mach-loki/Kconfig"
 689
 690 source "arch/arm/mach-mv78xx0/Kconfig"
 691
 692 source "arch/arm/mach-pxa/Kconfig"
 693 source "arch/arm/plat-pxa/Kconfig"
 694
 695 source "arch/arm/mach-mmp/Kconfig"
 696
 697 source "arch/arm/mach-sa1100/Kconfig"
 698
 699 source "arch/arm/plat-omap/Kconfig"
 700
 701 source "arch/arm/mach-omap1/Kconfig"
 702
 703 source "arch/arm/mach-omap2/Kconfig"
 704
 705 source "arch/arm/mach-orion5x/Kconfig"
 706
 707 source "arch/arm/mach-kirkwood/Kconfig"
 708
 709 source "arch/arm/plat-s3c24xx/Kconfig"
 710 source "arch/arm/plat-s3c64xx/Kconfig"
 711 source "arch/arm/plat-s3c/Kconfig"
 712 source "arch/arm/plat-s5pc1xx/Kconfig"
 713
 714 if ARCH_S3C2410
 715 source "arch/arm/mach-s3c2400/Kconfig"
 716 source "arch/arm/mach-s3c2410/Kconfig"
 717 source "arch/arm/mach-s3c2412/Kconfig"
 718 source "arch/arm/mach-s3c2440/Kconfig"
 719 source "arch/arm/mach-s3c2442/Kconfig"
 720 source "arch/arm/mach-s3c2443/Kconfig"
 721 endif
 722
 723 if ARCH_S3C64XX
 724 source "arch/arm/mach-s3c6400/Kconfig"
 725 source "arch/arm/mach-s3c6410/Kconfig"
 726 endif
 727
 728 source "arch/arm/plat-stmp3xxx/Kconfig"
 729
 730 if ARCH_S5PC1XX
 731 source "arch/arm/mach-s5pc100/Kconfig"
 732 endif
 733
 734 source "arch/arm/mach-lh7a40x/Kconfig"
 735
 736 source "arch/arm/mach-h720x/Kconfig"
 737
 738 source "arch/arm/mach-versatile/Kconfig"
 739
 740 source "arch/arm/mach-aaec2000/Kconfig"
 741
 742 source "arch/arm/mach-realview/Kconfig"
 743
 744 source "arch/arm/mach-at91/Kconfig"
 745
 746 source "arch/arm/plat-mxc/Kconfig"
 747
 748 source "arch/arm/mach-netx/Kconfig"
 749
 750 source "arch/arm/mach-ns9xxx/Kconfig"
 751
 752 source "arch/arm/mach-davinci/Kconfig"
 753
 754 source "arch/arm/mach-ks8695/Kconfig"
 755
 756 source "arch/arm/mach-msm/Kconfig"
 757
 758 source "arch/arm/mach-u300/Kconfig"
 759
 760 source "arch/arm/mach-w90x900/Kconfig"
 761
 762 # Definitions to make life easier
 763 config ARCH_ACORN
 764         bool
 765
 766 config PLAT_IOP
 767         bool
 768
 769 config PLAT_ORION
 770         bool
 771
 772 config PLAT_PXA
 773         bool
 774
 775 source arch/arm/mm/Kconfig
 776
 777 config IWMMXT
 778         bool "Enable iWMMXt support"
 779         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 780         default y if PXA27x || PXA3xx || ARCH_MMP
 781         help
 782           Enable support for iWMMXt context switching at run time if
 783           running on a CPU that supports it.
 784
 785 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 786 config XSCALE_PMU
 787         bool
 788         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 789         default y
 790
 791 if !MMU
 792 source "arch/arm/Kconfig-nommu"
 793 endif
 794
 795 config ARM_ERRATA_411920
 796         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 797         depends on CPU_V6 && !SMP
 798         help
 799           Invalidation of the Instruction Cache operation can
 800           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 801           It does not affect the MPCore. This option enables the ARM Ltd.
 802           recommended workaround.
 803
 804 config ARM_ERRATA_430973
 805         bool "ARM errata: Stale prediction on replaced interworking branch"
 806         depends on CPU_V7
 807         help
 808           This option enables the workaround for the 430973 Cortex-A8
 809           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 810           interworking branch is replaced with another code sequence at the
 811           same virtual address, whether due to self-modifying code or virtual
 812           to physical address re-mapping, Cortex-A8 does not recover from the
 813           stale interworking branch prediction. This results in Cortex-A8
 814           executing the new code sequence in the incorrect ARM or Thumb state.
 815           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 816           and also flushes the branch target cache at every context switch.
 817           Note that setting specific bits in the ACTLR register may not be
 818           available in non-secure mode.
 819
 820 config ARM_ERRATA_458693
 821         bool "ARM errata: Processor deadlock when a false hazard is created"
 822         depends on CPU_V7
 823         help
 824           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 825           erratum. For very specific sequences of memory operations, it is
 826           possible for a hazard condition intended for a cache line to instead
 827           be incorrectly associated with a different cache line. This false
 828           hazard might then cause a processor deadlock. The workaround enables
 829           the L1 caching of the NEON accesses and disables the PLD instruction
 830           in the ACTLR register. Note that setting specific bits in the ACTLR
 831           register may not be available in non-secure mode.
 832
 833 config ARM_ERRATA_460075
 834         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
 835         depends on CPU_V7
 836         help
 837           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
 838           erratum. Any asynchronous access to the L2 cache may encounter a
 839           situation in which recent store transactions to the L2 cache are lost
 840           and overwritten with stale memory contents from external memory. The
 841           workaround disables the write-allocate mode for the L2 cache via the
 842           ACTLR register. Note that setting specific bits in the ACTLR register
 843           may not be available in non-secure mode.
 844
 845 endmenu
 846
 847 source "arch/arm/common/Kconfig"
 848
 849 config FORCE_MAX_ZONEORDER
 850         int
 851         depends on SA1111
 852         default "9"
 853
 854 menu "Bus support"
 855
 856 config ARM_AMBA
 857         bool
 858
 859 config ISA
 860         bool
 861         help
 862           Find out whether you have ISA slots on your motherboard.  ISA is the
 863           name of a bus system, i.e. the way the CPU talks to the other stuff
 864           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 865           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 866           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 867
 868 # Select ISA DMA controller support
 869 config ISA_DMA
 870         bool
 871         select ISA_DMA_API
 872
 873 # Select ISA DMA interface
 874 config ISA_DMA_API
 875         bool
 876
 877 config PCI
 878         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 879         help
 880           Find out whether you have a PCI motherboard. PCI is the name of a
 881           bus system, i.e. the way the CPU talks to the other stuff inside
 882           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 883           VESA. If you have PCI, say Y, otherwise N.
 884
 885 config PCI_SYSCALL
 886         def_bool PCI
 887
 888 # Select the host bridge type
 889 config PCI_HOST_VIA82C505
 890         bool
 891         depends on PCI && ARCH_SHARK
 892         default y
 893
 894 config PCI_HOST_ITE8152
 895         bool
 896         depends on PCI && MACH_ARMCORE
 897         default y
 898         select DMABOUNCE
 899
 900 source "drivers/pci/Kconfig"
 901
 902 source "drivers/pcmcia/Kconfig"
 903
 904 endmenu
 905
 906 menu "Kernel Features"
 907
 908 source "kernel/time/Kconfig"
 909
 910 config SMP
 911         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 912         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
 913                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
 914         depends on GENERIC_CLOCKEVENTS
 915         select USE_GENERIC_SMP_HELPERS
 916         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
 917         help
 918           This enables support for systems with more than one CPU. If you have
 919           a system with only one CPU, like most personal computers, say N. If
 920           you have a system with more than one CPU, say Y.
 921
 922           If you say N here, the kernel will run on single and multiprocessor
 923           machines, but will use only one CPU of a multiprocessor machine. If
 924           you say Y here, the kernel will run on many, but not all, single
 925           processor machines. On a single processor machine, the kernel will
 926           run faster if you say N here.
 927
 928           See also <file:Documentation/i386/IO-APIC.txt>,
 929           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 930           <http://www.linuxdoc.org/docs.html#howto>.
 931
 932           If you don't know what to do here, say N.
 933
 934 config HAVE_ARM_SCU
 935         bool
 936         depends on SMP
 937         help
 938           This option enables support for the ARM system coherency unit
 939
 940 config HAVE_ARM_TWD
 941         bool
 942         depends on SMP
 943         help
 944           This options enables support for the ARM timer and watchdog unit
 945
 946 choice
 947         prompt "Memory split"
 948         default VMSPLIT_3G
 949         help
 950           Select the desired split between kernel and user memory.
 951
 952           If you are not absolutely sure what you are doing, leave this
 953           option alone!
 954
 955         config VMSPLIT_3G
 956                 bool "3G/1G user/kernel split"
 957         config VMSPLIT_2G
 958                 bool "2G/2G user/kernel split"
 959         config VMSPLIT_1G
 960                 bool "1G/3G user/kernel split"
 961 endchoice
 962
 963 config PAGE_OFFSET
 964         hex
 965         default 0x40000000 if VMSPLIT_1G
 966         default 0x80000000 if VMSPLIT_2G
 967         default 0xC0000000
 968
 969 config NR_CPUS
 970         int "Maximum number of CPUs (2-32)"
 971         range 2 32
 972         depends on SMP
 973         default "4"
 974
 975 config HOTPLUG_CPU
 976         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 977         depends on SMP && HOTPLUG && EXPERIMENTAL
 978         help
 979           Say Y here to experiment with turning CPUs off and on.  CPUs
 980           can be controlled through /sys/devices/system/cpu.
 981
 982 config LOCAL_TIMERS
 983         bool "Use local timer interrupts"
 984         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
 985                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
 986         default y
 987         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
 988         help
 989           Enable support for local timers on SMP platforms, rather then the
 990           legacy IPI broadcast method.  Local timers allows the system
 991           accounting to be spread across the timer interval, preventing a
 992           "thundering herd" at every timer tick.
 993
 994 source kernel/Kconfig.preempt
 995
 996 config HZ
 997         int
 998         default 128 if ARCH_L7200
 999         default 200 if ARCH_EBSA110 || ARCH_S3C2410
1000         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1001         default AT91_TIMER_HZ if ARCH_AT91
1002         default 100
1003
1004 config THUMB2_KERNEL
1005         bool "Compile the kernel in Thumb-2 mode"
1006         depends on CPU_V7 && EXPERIMENTAL
1007         select AEABI
1008         select ARM_ASM_UNIFIED
1009         help
1010           By enabling this option, the kernel will be compiled in
1011           Thumb-2 mode. A compiler/assembler that understand the unified
1012           ARM-Thumb syntax is needed.
1013
1014           If unsure, say N.
1015
1016 config ARM_ASM_UNIFIED
1017         bool
1018
1019 config AEABI
1020         bool "Use the ARM EABI to compile the kernel"
1021         help
1022           This option allows for the kernel to be compiled using the latest
1023           ARM ABI (aka EABI).  This is only useful if you are using a user
1024           space environment that is also compiled with EABI.
1025
1026           Since there are major incompatibilities between the legacy ABI and
1027           EABI, especially with regard to structure member alignment, this
1028           option also changes the kernel syscall calling convention to
1029           disambiguate both ABIs and allow for backward compatibility support
1030           (selected with CONFIG_OABI_COMPAT).
1031
1032           To use this you need GCC version 4.0.0 or later.
1033
1034 config OABI_COMPAT
1035         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1036         depends on AEABI && EXPERIMENTAL
1037         default y
1038         help
1039           This option preserves the old syscall interface along with the
1040           new (ARM EABI) one. It also provides a compatibility layer to
1041           intercept syscalls that have structure arguments which layout
1042           in memory differs between the legacy ABI and the new ARM EABI
1043           (only for non "thumb" binaries). This option adds a tiny
1044           overhead to all syscalls and produces a slightly larger kernel.
1045           If you know you'll be using only pure EABI user space then you
1046           can say N here. If this option is not selected and you attempt
1047           to execute a legacy ABI binary then the result will be
1048           UNPREDICTABLE (in fact it can be predicted that it won't work
1049           at all). If in doubt say Y.
1050
1051 config ARCH_HAS_HOLES_MEMORYMODEL
1052         bool
1053
1054 # Discontigmem is deprecated
1055 config ARCH_DISCONTIGMEM_ENABLE
1056         bool
1057
1058 config ARCH_SPARSEMEM_ENABLE
1059         bool
1060
1061 config ARCH_SPARSEMEM_DEFAULT
1062         def_bool ARCH_SPARSEMEM_ENABLE
1063
1064 config ARCH_SELECT_MEMORY_MODEL
1065         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1066
1067 config NODES_SHIFT
1068         int
1069         default "4" if ARCH_LH7A40X
1070         default "2"
1071         depends on NEED_MULTIPLE_NODES
1072
1073 config HIGHMEM
1074         bool "High Memory Support (EXPERIMENTAL)"
1075         depends on MMU && EXPERIMENTAL
1076         help
1077           The address space of ARM processors is only 4 Gigabytes large
1078           and it has to accommodate user address space, kernel address
1079           space as well as some memory mapped IO. That means that, if you
1080           have a large amount of physical memory and/or IO, not all of the
1081           memory can be "permanently mapped" by the kernel. The physical
1082           memory that is not permanently mapped is called "high memory".
1083
1084           Depending on the selected kernel/user memory split, minimum
1085           vmalloc space and actual amount of RAM, you may not need this
1086           option which should result in a slightly faster kernel.
1087
1088           If unsure, say n.
1089
1090 source "mm/Kconfig"
1091
1092 config LEDS
1093         bool "Timer and CPU usage LEDs"
1094         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1095                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1096                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1097                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1098                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1099                    ARCH_AT91 || ARCH_DAVINCI || \
1100                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1101         help
1102           If you say Y here, the LEDs on your machine will be used
1103           to provide useful information about your current system status.
1104
1105           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1106           be able to select which LEDs are active using the options below. If
1107           you are compiling a kernel for the EBSA-110 or the LART however, the
1108           red LED will simply flash regularly to indicate that the system is
1109           still functional. It is safe to say Y here if you have a CATS
1110           system, but the driver will do nothing.
1111
1112 config LEDS_TIMER
1113         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1114                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1115                             || MACH_OMAP_PERSEUS2
1116         depends on LEDS
1117         depends on !GENERIC_CLOCKEVENTS
1118         default y if ARCH_EBSA110
1119         help
1120           If you say Y here, one of the system LEDs (the green one on the
1121           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1122           will flash regularly to indicate that the system is still
1123           operational. This is mainly useful to kernel hackers who are
1124           debugging unstable kernels.
1125
1126           The LART uses the same LED for both Timer LED and CPU usage LED
1127           functions. You may choose to use both, but the Timer LED function
1128           will overrule the CPU usage LED.
1129
1130 config LEDS_CPU
1131         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1132                         !ARCH_OMAP) \
1133                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1134                         || MACH_OMAP_PERSEUS2
1135         depends on LEDS
1136         help
1137           If you say Y here, the red LED will be used to give a good real
1138           time indication of CPU usage, by lighting whenever the idle task
1139           is not currently executing.
1140
1141           The LART uses the same LED for both Timer LED and CPU usage LED
1142           functions. You may choose to use both, but the Timer LED function
1143           will overrule the CPU usage LED.
1144
1145 config ALIGNMENT_TRAP
1146         bool
1147         depends on CPU_CP15_MMU
1148         default y if !ARCH_EBSA110
1149         help
1150           ARM processors cannot fetch/store information which is not
1151           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1152           address divisible by 4. On 32-bit ARM processors, these non-aligned
1153           fetch/store instructions will be emulated in software if you say
1154           here, which has a severe performance impact. This is necessary for
1155           correct operation of some network protocols. With an IP-only
1156           configuration it is safe to say N, otherwise say Y.
1157
1158 config UACCESS_WITH_MEMCPY
1159         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1160         depends on MMU && EXPERIMENTAL
1161         default y if CPU_FEROCEON
1162         help
1163           Implement faster copy_to_user and clear_user methods for CPU
1164           cores where a 8-word STM instruction give significantly higher
1165           memory write throughput than a sequence of individual 32bit stores.
1166
1167           A possible side effect is a slight increase in scheduling latency
1168           between threads sharing the same address space if they invoke
1169           such copy operations with large buffers.
1170
1171           However, if the CPU data cache is using a write-allocate mode,
1172           this option is unlikely to provide any performance gain.
1173
1174 endmenu
1175
1176 menu "Boot options"
1177
1178 # Compressed boot loader in ROM.  Yes, we really want to ask about
1179 # TEXT and BSS so we preserve their values in the config files.
1180 config ZBOOT_ROM_TEXT
1181         hex "Compressed ROM boot loader base address"
1182         default "0"
1183         help
1184           The physical address at which the ROM-able zImage is to be
1185           placed in the target.  Platforms which normally make use of
1186           ROM-able zImage formats normally set this to a suitable
1187           value in their defconfig file.
1188
1189           If ZBOOT_ROM is not enabled, this has no effect.
1190
1191 config ZBOOT_ROM_BSS
1192         hex "Compressed ROM boot loader BSS address"
1193         default "0"
1194         help
1195           The base address of an area of read/write memory in the target
1196           for the ROM-able zImage which must be available while the
1197           decompressor is running. It must be large enough to hold the
1198           entire decompressed kernel plus an additional 128 KiB.
1199           Platforms which normally make use of ROM-able zImage formats
1200           normally set this to a suitable value in their defconfig file.
1201
1202           If ZBOOT_ROM is not enabled, this has no effect.
1203
1204 config ZBOOT_ROM
1205         bool "Compressed boot loader in ROM/flash"
1206         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1207         help
1208           Say Y here if you intend to execute your compressed kernel image
1209           (zImage) directly from ROM or flash.  If unsure, say N.
1210
1211 config CMDLINE
1212         string "Default kernel command string"
1213         default ""
1214         help
1215           On some architectures (EBSA110 and CATS), there is currently no way
1216           for the boot loader to pass arguments to the kernel. For these
1217           architectures, you should supply some command-line options at build
1218           time by entering them here. As a minimum, you should specify the
1219           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1220
1221 config XIP_KERNEL
1222         bool "Kernel Execute-In-Place from ROM"
1223         depends on !ZBOOT_ROM
1224         help
1225           Execute-In-Place allows the kernel to run from non-volatile storage
1226           directly addressable by the CPU, such as NOR flash. This saves RAM
1227           space since the text section of the kernel is not loaded from flash
1228           to RAM.  Read-write sections, such as the data section and stack,
1229           are still copied to RAM.  The XIP kernel is not compressed since
1230           it has to run directly from flash, so it will take more space to
1231           store it.  The flash address used to link the kernel object files,
1232           and for storing it, is configuration dependent. Therefore, if you
1233           say Y here, you must know the proper physical address where to
1234           store the kernel image depending on your own flash memory usage.
1235
1236           Also note that the make target becomes "make xipImage" rather than
1237           "make zImage" or "make Image".  The final kernel binary to put in
1238           ROM memory will be arch/arm/boot/xipImage.
1239
1240           If unsure, say N.
1241
1242 config XIP_PHYS_ADDR
1243         hex "XIP Kernel Physical Location"
1244         depends on XIP_KERNEL
1245         default "0x00080000"
1246         help
1247           This is the physical address in your flash memory the kernel will
1248           be linked for and stored to.  This address is dependent on your
1249           own flash usage.
1250
1251 config KEXEC
1252         bool "Kexec system call (EXPERIMENTAL)"
1253         depends on EXPERIMENTAL
1254         help
1255           kexec is a system call that implements the ability to shutdown your
1256           current kernel, and to start another kernel.  It is like a reboot
1257           but it is independent of the system firmware.   And like a reboot
1258           you can start any kernel with it, not just Linux.
1259
1260           It is an ongoing process to be certain the hardware in a machine
1261           is properly shutdown, so do not be surprised if this code does not
1262           initially work for you.  It may help to enable device hotplugging
1263           support.
1264
1265 config ATAGS_PROC
1266         bool "Export atags in procfs"
1267         depends on KEXEC
1268         default y
1269         help
1270           Should the atags used to boot the kernel be exported in an "atags"
1271           file in procfs. Useful with kexec.
1272
1273 endmenu
1274
1275 menu "CPU Power Management"
1276
1277 if ARCH_HAS_CPUFREQ
1278
1279 source "drivers/cpufreq/Kconfig"
1280
1281 config CPU_FREQ_SA1100
1282         bool
1283         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1284         default y
1285
1286 config CPU_FREQ_SA1110
1287         bool
1288         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1289         default y
1290
1291 config CPU_FREQ_INTEGRATOR
1292         tristate "CPUfreq driver for ARM Integrator CPUs"
1293         depends on ARCH_INTEGRATOR && CPU_FREQ
1294         default y
1295         help
1296           This enables the CPUfreq driver for ARM Integrator CPUs.
1297
1298           For details, take a look at <file:Documentation/cpu-freq>.
1299
1300           If in doubt, say Y.
1301
1302 config CPU_FREQ_PXA
1303         bool
1304         depends on CPU_FREQ && ARCH_PXA && PXA25x
1305         default y
1306         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1307
1308 config CPU_FREQ_S3C64XX
1309         bool "CPUfreq support for Samsung S3C64XX CPUs"
1310         depends on CPU_FREQ && CPU_S3C6410
1311
1312 config CPU_FREQ_S3C
1313         bool
1314         help
1315           Internal configuration node for common cpufreq on Samsung SoC
1316
1317 config CPU_FREQ_S3C24XX
1318         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1319         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1320         select CPU_FREQ_S3C
1321         help
1322           This enables the CPUfreq driver for the Samsung S3C24XX family
1323           of CPUs.
1324
1325           For details, take a look at <file:Documentation/cpu-freq>.
1326
1327           If in doubt, say N.
1328
1329 config CPU_FREQ_S3C24XX_PLL
1330         bool "Support CPUfreq changing of PLL frequency"
1331         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1332         help
1333           Compile in support for changing the PLL frequency from the
1334           S3C24XX series CPUfreq driver. The PLL takes time to settle
1335           after a frequency change, so by default it is not enabled.
1336
1337           This also means that the PLL tables for the selected CPU(s) will
1338           be built which may increase the size of the kernel image.
1339
1340 config CPU_FREQ_S3C24XX_DEBUG
1341         bool "Debug CPUfreq Samsung driver core"
1342         depends on CPU_FREQ_S3C24XX
1343         help
1344           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1345
1346 config CPU_FREQ_S3C24XX_IODEBUG
1347         bool "Debug CPUfreq Samsung driver IO timing"
1348         depends on CPU_FREQ_S3C24XX
1349         help
1350           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1351
1352 config CPU_FREQ_S3C24XX_DEBUGFS
1353         bool "Export debugfs for CPUFreq"
1354         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1355         help
1356           Export status information via debugfs.
1357
1358 endif
1359
1360 source "drivers/cpuidle/Kconfig"
1361
1362 endmenu
1363
1364 menu "Floating point emulation"
1365
1366 comment "At least one emulation must be selected"
1367
1368 config FPE_NWFPE
1369         bool "NWFPE math emulation"
1370         depends on !AEABI || OABI_COMPAT
1371         ---help---
1372           Say Y to include the NWFPE floating point emulator in the kernel.
1373           This is necessary to run most binaries. Linux does not currently
1374           support floating point hardware so you need to say Y here even if
1375           your machine has an FPA or floating point co-processor podule.
1376
1377           You may say N here if you are going to load the Acorn FPEmulator
1378           early in the bootup.
1379
1380 config FPE_NWFPE_XP
1381         bool "Support extended precision"
1382         depends on FPE_NWFPE
1383         help
1384           Say Y to include 80-bit support in the kernel floating-point
1385           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1386           Note that gcc does not generate 80-bit operations by default,
1387           so in most cases this option only enlarges the size of the
1388           floating point emulator without any good reason.
1389
1390           You almost surely want to say N here.
1391
1392 config FPE_FASTFPE
1393         bool "FastFPE math emulation (EXPERIMENTAL)"
1394         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1395         ---help---
1396           Say Y here to include the FAST floating point emulator in the kernel.
1397           This is an experimental much faster emulator which now also has full
1398           precision for the mantissa.  It does not support any exceptions.
1399           It is very simple, and approximately 3-6 times faster than NWFPE.
1400
1401           It should be sufficient for most programs.  It may be not suitable
1402           for scientific calculations, but you have to check this for yourself.
1403           If you do not feel you need a faster FP emulation you should better
1404           choose NWFPE.
1405
1406 config VFP
1407         bool "VFP-format floating point maths"
1408         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1409         help
1410           Say Y to include VFP support code in the kernel. This is needed
1411           if your hardware includes a VFP unit.
1412
1413           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1414           release notes and additional status information.
1415
1416           Say N if your target does not have VFP hardware.
1417
1418 config VFPv3
1419         bool
1420         depends on VFP
1421         default y if CPU_V7
1422
1423 config NEON
1424         bool "Advanced SIMD (NEON) Extension support"
1425         depends on VFPv3 && CPU_V7
1426         help
1427           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1428           Extension.
1429
1430 endmenu
1431
1432 menu "Userspace binary formats"
1433
1434 source "fs/Kconfig.binfmt"
1435
1436 config ARTHUR
1437         tristate "RISC OS personality"
1438         depends on !AEABI
1439         help
1440           Say Y here to include the kernel code necessary if you want to run
1441           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1442           experimental; if this sounds frightening, say N and sleep in peace.
1443           You can also say M here to compile this support as a module (which
1444           will be called arthur).
1445
1446 endmenu
1447
1448 menu "Power management options"
1449
1450 source "kernel/power/Kconfig"
1451
1452 config ARCH_SUSPEND_POSSIBLE
1453         def_bool y
1454
1455 endmenu
1456
1457 source "net/Kconfig"
1458
1459 source "drivers/Kconfig"
1460
1461 source "fs/Kconfig"
1462
1463 source "arch/arm/Kconfig.debug"
1464
1465 source "security/Kconfig"
1466
1467 source "crypto/Kconfig"
1468
1469 source "lib/Kconfig"