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         select ARCH_WANT_OPTIONAL_GPIOLIB
 232         help
 233           This enables support for ARM Ltd RealView boards.
 234
 235 config ARCH_VERSATILE
 236         bool "ARM Ltd. Versatile family"
 237         select ARM_AMBA
 238         select ARM_VIC
 239         select HAVE_CLK
 240         select COMMON_CLKDEV
 241         select ICST307
 242         select GENERIC_TIME
 243         select GENERIC_CLOCKEVENTS
 244         select ARCH_WANT_OPTIONAL_GPIOLIB
 245         help
 246           This enables support for ARM Ltd Versatile board.
 247
 248 config ARCH_AT91
 249         bool "Atmel AT91"
 250         select GENERIC_GPIO
 251         select ARCH_REQUIRE_GPIOLIB
 252         select HAVE_CLK
 253         help
 254           This enables support for systems based on the Atmel AT91RM9200,
 255           AT91SAM9 and AT91CAP9 processors.
 256
 257 config ARCH_CLPS711X
 258         bool "Cirrus Logic CLPS711x/EP721x-based"
 259         select CPU_ARM720T
 260         help
 261           Support for Cirrus Logic 711x/721x based boards.
 262
 263 config ARCH_GEMINI
 264         bool "Cortina Systems Gemini"
 265         select CPU_FA526
 266         select GENERIC_GPIO
 267         select ARCH_REQUIRE_GPIOLIB
 268         help
 269           Support for the Cortina Systems Gemini family SoCs
 270
 271 config ARCH_EBSA110
 272         bool "EBSA-110"
 273         select CPU_SA110
 274         select ISA
 275         select NO_IOPORT
 276         help
 277           This is an evaluation board for the StrongARM processor available
 278           from Digital. It has limited hardware on-board, including an
 279           Ethernet interface, two PCMCIA sockets, two serial ports and a
 280           parallel port.
 281
 282 config ARCH_EP93XX
 283         bool "EP93xx-based"
 284         select CPU_ARM920T
 285         select ARM_AMBA
 286         select ARM_VIC
 287         select GENERIC_GPIO
 288         select HAVE_CLK
 289         select COMMON_CLKDEV
 290         select ARCH_REQUIRE_GPIOLIB
 291         select ARCH_HAS_HOLES_MEMORYMODEL
 292         help
 293           This enables support for the Cirrus EP93xx series of CPUs.
 294
 295 config ARCH_FOOTBRIDGE
 296         bool "FootBridge"
 297         select CPU_SA110
 298         select FOOTBRIDGE
 299         help
 300           Support for systems based on the DC21285 companion chip
 301           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 302
 303 config ARCH_MXC
 304         bool "Freescale MXC/iMX-based"
 305         select GENERIC_TIME
 306         select GENERIC_CLOCKEVENTS
 307         select ARCH_MTD_XIP
 308         select GENERIC_GPIO
 309         select ARCH_REQUIRE_GPIOLIB
 310         select HAVE_CLK
 311         help
 312           Support for Freescale MXC/iMX-based family of processors
 313
 314 config ARCH_STMP3XXX
 315         bool "Freescale STMP3xxx"
 316         select CPU_ARM926T
 317         select HAVE_CLK
 318         select COMMON_CLKDEV
 319         select ARCH_REQUIRE_GPIOLIB
 320         select GENERIC_TIME
 321         select GENERIC_CLOCKEVENTS
 322         select GENERIC_GPIO
 323         select USB_ARCH_HAS_EHCI
 324         help
 325           Support for systems based on the Freescale 3xxx CPUs.
 326
 327 config ARCH_NETX
 328         bool "Hilscher NetX based"
 329         select CPU_ARM926T
 330         select ARM_VIC
 331         select GENERIC_CLOCKEVENTS
 332         select GENERIC_TIME
 333         help
 334           This enables support for systems based on the Hilscher NetX Soc
 335
 336 config ARCH_H720X
 337         bool "Hynix HMS720x-based"
 338         select CPU_ARM720T
 339         select ISA_DMA_API
 340         help
 341           This enables support for systems based on the Hynix HMS720x
 342
 343 config ARCH_NOMADIK
 344         bool "STMicroelectronics Nomadik"
 345         select ARM_AMBA
 346         select ARM_VIC
 347         select CPU_ARM926T
 348         select HAVE_CLK
 349         select COMMON_CLKDEV
 350         select GENERIC_TIME
 351         select GENERIC_CLOCKEVENTS
 352         select GENERIC_GPIO
 353         select ARCH_REQUIRE_GPIOLIB
 354         help
 355           Support for the Nomadik platform by ST-Ericsson
 356
 357 config ARCH_IOP13XX
 358         bool "IOP13xx-based"
 359         depends on MMU
 360         select CPU_XSC3
 361         select PLAT_IOP
 362         select PCI
 363         select ARCH_SUPPORTS_MSI
 364         select VMSPLIT_1G
 365         help
 366           Support for Intel's IOP13XX (XScale) family of processors.
 367
 368 config ARCH_IOP32X
 369         bool "IOP32x-based"
 370         depends on MMU
 371         select CPU_XSCALE
 372         select PLAT_IOP
 373         select PCI
 374         select GENERIC_GPIO
 375         select ARCH_REQUIRE_GPIOLIB
 376         help
 377           Support for Intel's 80219 and IOP32X (XScale) family of
 378           processors.
 379
 380 config ARCH_IOP33X
 381         bool "IOP33x-based"
 382         depends on MMU
 383         select CPU_XSCALE
 384         select PLAT_IOP
 385         select PCI
 386         select GENERIC_GPIO
 387         select ARCH_REQUIRE_GPIOLIB
 388         help
 389           Support for Intel's IOP33X (XScale) family of processors.
 390
 391 config ARCH_IXP23XX
 392         bool "IXP23XX-based"
 393         depends on MMU
 394         select CPU_XSC3
 395         select PCI
 396         help
 397           Support for Intel's IXP23xx (XScale) family of processors.
 398
 399 config ARCH_IXP2000
 400         bool "IXP2400/2800-based"
 401         depends on MMU
 402         select CPU_XSCALE
 403         select PCI
 404         help
 405           Support for Intel's IXP2400/2800 (XScale) family of processors.
 406
 407 config ARCH_IXP4XX
 408         bool "IXP4xx-based"
 409         depends on MMU
 410         select CPU_XSCALE
 411         select GENERIC_GPIO
 412         select GENERIC_TIME
 413         select GENERIC_CLOCKEVENTS
 414         select DMABOUNCE if PCI
 415         help
 416           Support for Intel's IXP4XX (XScale) family of processors.
 417
 418 config ARCH_L7200
 419         bool "LinkUp-L7200"
 420         select CPU_ARM720T
 421         select FIQ
 422         help
 423           Say Y here if you intend to run this kernel on a LinkUp Systems
 424           L7200 Software Development Board which uses an ARM720T processor.
 425           Information on this board can be obtained at:
 426
 427           <http://www.linkupsys.com/>
 428
 429           If you have any questions or comments about the Linux kernel port
 430           to this board, send e-mail to <sjhill@cotw.com>.
 431
 432 config ARCH_KIRKWOOD
 433         bool "Marvell Kirkwood"
 434         select CPU_FEROCEON
 435         select PCI
 436         select GENERIC_GPIO
 437         select ARCH_REQUIRE_GPIOLIB
 438         select GENERIC_TIME
 439         select GENERIC_CLOCKEVENTS
 440         select PLAT_ORION
 441         help
 442           Support for the following Marvell Kirkwood series SoCs:
 443           88F6180, 88F6192 and 88F6281.
 444
 445 config ARCH_LOKI
 446         bool "Marvell Loki (88RC8480)"
 447         select CPU_FEROCEON
 448         select GENERIC_TIME
 449         select GENERIC_CLOCKEVENTS
 450         select PLAT_ORION
 451         help
 452           Support for the Marvell Loki (88RC8480) SoC.
 453
 454 config ARCH_MV78XX0
 455         bool "Marvell MV78xx0"
 456         select CPU_FEROCEON
 457         select PCI
 458         select GENERIC_GPIO
 459         select ARCH_REQUIRE_GPIOLIB
 460         select GENERIC_TIME
 461         select GENERIC_CLOCKEVENTS
 462         select PLAT_ORION
 463         help
 464           Support for the following Marvell MV78xx0 series SoCs:
 465           MV781x0, MV782x0.
 466
 467 config ARCH_ORION5X
 468         bool "Marvell Orion"
 469         depends on MMU
 470         select CPU_FEROCEON
 471         select PCI
 472         select GENERIC_GPIO
 473         select ARCH_REQUIRE_GPIOLIB
 474         select GENERIC_TIME
 475         select GENERIC_CLOCKEVENTS
 476         select PLAT_ORION
 477         help
 478           Support for the following Marvell Orion 5x series SoCs:
 479           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 480           Orion-2 (5281), Orion-1-90 (6183).
 481
 482 config ARCH_MMP
 483         bool "Marvell PXA168/910"
 484         depends on MMU
 485         select GENERIC_GPIO
 486         select ARCH_REQUIRE_GPIOLIB
 487         select HAVE_CLK
 488         select COMMON_CLKDEV
 489         select GENERIC_TIME
 490         select GENERIC_CLOCKEVENTS
 491         select TICK_ONESHOT
 492         select PLAT_PXA
 493         help
 494           Support for Marvell's PXA168/910 processor line.
 495
 496 config ARCH_KS8695
 497         bool "Micrel/Kendin KS8695"
 498         select CPU_ARM922T
 499         select GENERIC_GPIO
 500         select ARCH_REQUIRE_GPIOLIB
 501         help
 502           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 503           System-on-Chip devices.
 504
 505 config ARCH_NS9XXX
 506         bool "NetSilicon NS9xxx"
 507         select CPU_ARM926T
 508         select GENERIC_GPIO
 509         select GENERIC_TIME
 510         select GENERIC_CLOCKEVENTS
 511         select HAVE_CLK
 512         help
 513           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 514           System.
 515
 516           <http://www.digi.com/products/microprocessors/index.jsp>
 517
 518 config ARCH_W90X900
 519         bool "Nuvoton W90X900 CPU"
 520         select CPU_ARM926T
 521         select ARCH_REQUIRE_GPIOLIB
 522         select GENERIC_GPIO
 523         select HAVE_CLK
 524         select COMMON_CLKDEV
 525         select GENERIC_TIME
 526         select GENERIC_CLOCKEVENTS
 527         help
 528           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 529           At present, the w90x900 has been renamed nuc900, regarding
 530           the ARM series product line, you can login the following
 531           link address to know more.
 532
 533           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 534                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 535
 536 config ARCH_PNX4008
 537         bool "Philips Nexperia PNX4008 Mobile"
 538         select CPU_ARM926T
 539         select HAVE_CLK
 540         help
 541           This enables support for Philips PNX4008 mobile platform.
 542
 543 config ARCH_PXA
 544         bool "PXA2xx/PXA3xx-based"
 545         depends on MMU
 546         select ARCH_MTD_XIP
 547         select ARCH_HAS_CPUFREQ
 548         select GENERIC_GPIO
 549         select HAVE_CLK
 550         select COMMON_CLKDEV
 551         select ARCH_REQUIRE_GPIOLIB
 552         select GENERIC_TIME
 553         select GENERIC_CLOCKEVENTS
 554         select TICK_ONESHOT
 555         select PLAT_PXA
 556         help
 557           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 558
 559 config ARCH_MSM
 560         bool "Qualcomm MSM"
 561         select CPU_V6
 562         select GENERIC_TIME
 563         select GENERIC_CLOCKEVENTS
 564         help
 565           Support for Qualcomm MSM7K based systems.  This runs on the ARM11
 566           apps processor of the MSM7K and depends on a shared memory
 567           interface to the ARM9 modem processor which runs the baseband stack
 568           and controls some vital subsystems (clock and power control, etc).
 569
 570 config ARCH_RPC
 571         bool "RiscPC"
 572         select ARCH_ACORN
 573         select FIQ
 574         select TIMER_ACORN
 575         select ARCH_MAY_HAVE_PC_FDC
 576         select HAVE_PATA_PLATFORM
 577         select ISA_DMA_API
 578         select NO_IOPORT
 579         select ARCH_SPARSEMEM_ENABLE
 580         help
 581           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 582           CD-ROM interface, serial and parallel port, and the floppy drive.
 583
 584 config ARCH_SA1100
 585         bool "SA1100-based"
 586         select CPU_SA1100
 587         select ISA
 588         select ARCH_SPARSEMEM_ENABLE
 589         select ARCH_MTD_XIP
 590         select ARCH_HAS_CPUFREQ
 591         select GENERIC_GPIO
 592         select GENERIC_TIME
 593         select GENERIC_CLOCKEVENTS
 594         select HAVE_CLK
 595         select TICK_ONESHOT
 596         select ARCH_REQUIRE_GPIOLIB
 597         help
 598           Support for StrongARM 11x0 based boards.
 599
 600 config ARCH_S3C2410
 601         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 602         select GENERIC_GPIO
 603         select ARCH_HAS_CPUFREQ
 604         select HAVE_CLK
 605         help
 606           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 607           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 608           the Samsung SMDK2410 development board (and derivatives).
 609
 610 config ARCH_S3C64XX
 611         bool "Samsung S3C64XX"
 612         select GENERIC_GPIO
 613         select HAVE_CLK
 614         select ARCH_HAS_CPUFREQ
 615         help
 616           Samsung S3C64XX series based systems
 617
 618 config ARCH_S5PC1XX
 619         bool "Samsung S5PC1XX"
 620         select GENERIC_GPIO
 621         select HAVE_CLK
 622         select CPU_V7
 623         help
 624           Samsung S5PC1XX series based systems
 625
 626 config ARCH_SHARK
 627         bool "Shark"
 628         select CPU_SA110
 629         select ISA
 630         select ISA_DMA
 631         select ZONE_DMA
 632         select PCI
 633         help
 634           Support for the StrongARM based Digital DNARD machine, also known
 635           as "Shark" (<http://www.shark-linux.de/shark.html>).
 636
 637 config ARCH_LH7A40X
 638         bool "Sharp LH7A40X"
 639         select CPU_ARM922T
 640         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 641         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 642         help
 643           Say Y here for systems based on one of the Sharp LH7A40X
 644           System on a Chip processors.  These CPUs include an ARM922T
 645           core with a wide array of integrated devices for
 646           hand-held and low-power applications.
 647
 648 config ARCH_U300
 649         bool "ST-Ericsson U300 Series"
 650         depends on MMU
 651         select CPU_ARM926T
 652         select ARM_AMBA
 653         select ARM_VIC
 654         select GENERIC_TIME
 655         select GENERIC_CLOCKEVENTS
 656         select HAVE_CLK
 657         select COMMON_CLKDEV
 658         select GENERIC_GPIO
 659         help
 660           Support for ST-Ericsson U300 series mobile platforms.
 661
 662 config ARCH_DAVINCI
 663         bool "TI DaVinci"
 664         select CPU_ARM926T
 665         select GENERIC_TIME
 666         select GENERIC_CLOCKEVENTS
 667         select GENERIC_GPIO
 668         select ARCH_REQUIRE_GPIOLIB
 669         select HAVE_CLK
 670         select ZONE_DMA
 671         select HAVE_IDE
 672         select COMMON_CLKDEV
 673         select GENERIC_ALLOCATOR
 674         help
 675           Support for TI's DaVinci platform.
 676
 677 config ARCH_OMAP
 678         bool "TI OMAP"
 679         select GENERIC_GPIO
 680         select HAVE_CLK
 681         select ARCH_REQUIRE_GPIOLIB
 682         select ARCH_HAS_CPUFREQ
 683         select GENERIC_TIME
 684         select GENERIC_CLOCKEVENTS
 685         help
 686           Support for TI's OMAP platform (OMAP1 and OMAP2).
 687
 688 config ARCH_BCMRING
 689         bool "Broadcom BCMRING"
 690         depends on MMU
 691         select CPU_V6
 692         select ARM_AMBA
 693         select COMMON_CLKDEV
 694         select GENERIC_TIME
 695         select GENERIC_CLOCKEVENTS
 696         select ARCH_WANT_OPTIONAL_GPIOLIB
 697         help
 698           Support for Broadcom's BCMRing platform.
 699
 700 endchoice
 701
 702 source "arch/arm/mach-clps711x/Kconfig"
 703
 704 source "arch/arm/mach-ep93xx/Kconfig"
 705
 706 source "arch/arm/mach-footbridge/Kconfig"
 707
 708 source "arch/arm/mach-gemini/Kconfig"
 709
 710 source "arch/arm/mach-integrator/Kconfig"
 711
 712 source "arch/arm/mach-iop32x/Kconfig"
 713
 714 source "arch/arm/mach-iop33x/Kconfig"
 715
 716 source "arch/arm/mach-iop13xx/Kconfig"
 717
 718 source "arch/arm/mach-ixp4xx/Kconfig"
 719
 720 source "arch/arm/mach-ixp2000/Kconfig"
 721
 722 source "arch/arm/mach-ixp23xx/Kconfig"
 723
 724 source "arch/arm/mach-loki/Kconfig"
 725
 726 source "arch/arm/mach-mv78xx0/Kconfig"
 727
 728 source "arch/arm/mach-pxa/Kconfig"
 729 source "arch/arm/plat-pxa/Kconfig"
 730
 731 source "arch/arm/mach-mmp/Kconfig"
 732
 733 source "arch/arm/mach-sa1100/Kconfig"
 734
 735 source "arch/arm/plat-omap/Kconfig"
 736
 737 source "arch/arm/mach-omap1/Kconfig"
 738
 739 source "arch/arm/mach-omap2/Kconfig"
 740
 741 source "arch/arm/mach-orion5x/Kconfig"
 742
 743 source "arch/arm/mach-kirkwood/Kconfig"
 744
 745 source "arch/arm/plat-s3c24xx/Kconfig"
 746 source "arch/arm/plat-s3c64xx/Kconfig"
 747 source "arch/arm/plat-s3c/Kconfig"
 748 source "arch/arm/plat-s5pc1xx/Kconfig"
 749
 750 if ARCH_S3C2410
 751 source "arch/arm/mach-s3c2400/Kconfig"
 752 source "arch/arm/mach-s3c2410/Kconfig"
 753 source "arch/arm/mach-s3c2412/Kconfig"
 754 source "arch/arm/mach-s3c2440/Kconfig"
 755 source "arch/arm/mach-s3c2442/Kconfig"
 756 source "arch/arm/mach-s3c2443/Kconfig"
 757 endif
 758
 759 if ARCH_S3C64XX
 760 source "arch/arm/mach-s3c6400/Kconfig"
 761 source "arch/arm/mach-s3c6410/Kconfig"
 762 endif
 763
 764 source "arch/arm/plat-stmp3xxx/Kconfig"
 765
 766 if ARCH_S5PC1XX
 767 source "arch/arm/mach-s5pc100/Kconfig"
 768 endif
 769
 770 source "arch/arm/mach-lh7a40x/Kconfig"
 771
 772 source "arch/arm/mach-h720x/Kconfig"
 773
 774 source "arch/arm/mach-versatile/Kconfig"
 775
 776 source "arch/arm/mach-aaec2000/Kconfig"
 777
 778 source "arch/arm/mach-realview/Kconfig"
 779
 780 source "arch/arm/mach-at91/Kconfig"
 781
 782 source "arch/arm/plat-mxc/Kconfig"
 783
 784 source "arch/arm/mach-nomadik/Kconfig"
 785
 786 source "arch/arm/mach-netx/Kconfig"
 787
 788 source "arch/arm/mach-ns9xxx/Kconfig"
 789
 790 source "arch/arm/mach-davinci/Kconfig"
 791
 792 source "arch/arm/mach-ks8695/Kconfig"
 793
 794 source "arch/arm/mach-msm/Kconfig"
 795
 796 source "arch/arm/mach-u300/Kconfig"
 797
 798 source "arch/arm/mach-w90x900/Kconfig"
 799
 800 source "arch/arm/mach-bcmring/Kconfig"
 801
 802 # Definitions to make life easier
 803 config ARCH_ACORN
 804         bool
 805
 806 config PLAT_IOP
 807         bool
 808
 809 config PLAT_ORION
 810         bool
 811
 812 config PLAT_PXA
 813         bool
 814
 815 source arch/arm/mm/Kconfig
 816
 817 config IWMMXT
 818         bool "Enable iWMMXt support"
 819         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 820         default y if PXA27x || PXA3xx || ARCH_MMP
 821         help
 822           Enable support for iWMMXt context switching at run time if
 823           running on a CPU that supports it.
 824
 825 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 826 config XSCALE_PMU
 827         bool
 828         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 829         default y
 830
 831 if !MMU
 832 source "arch/arm/Kconfig-nommu"
 833 endif
 834
 835 config ARM_ERRATA_411920
 836         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 837         depends on CPU_V6 && !SMP
 838         help
 839           Invalidation of the Instruction Cache operation can
 840           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 841           It does not affect the MPCore. This option enables the ARM Ltd.
 842           recommended workaround.
 843
 844 config ARM_ERRATA_430973
 845         bool "ARM errata: Stale prediction on replaced interworking branch"
 846         depends on CPU_V7
 847         help
 848           This option enables the workaround for the 430973 Cortex-A8
 849           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 850           interworking branch is replaced with another code sequence at the
 851           same virtual address, whether due to self-modifying code or virtual
 852           to physical address re-mapping, Cortex-A8 does not recover from the
 853           stale interworking branch prediction. This results in Cortex-A8
 854           executing the new code sequence in the incorrect ARM or Thumb state.
 855           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 856           and also flushes the branch target cache at every context switch.
 857           Note that setting specific bits in the ACTLR register may not be
 858           available in non-secure mode.
 859
 860 config ARM_ERRATA_458693
 861         bool "ARM errata: Processor deadlock when a false hazard is created"
 862         depends on CPU_V7
 863         help
 864           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 865           erratum. For very specific sequences of memory operations, it is
 866           possible for a hazard condition intended for a cache line to instead
 867           be incorrectly associated with a different cache line. This false
 868           hazard might then cause a processor deadlock. The workaround enables
 869           the L1 caching of the NEON accesses and disables the PLD instruction
 870           in the ACTLR register. Note that setting specific bits in the ACTLR
 871           register may not be available in non-secure mode.
 872
 873 config ARM_ERRATA_460075
 874         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
 875         depends on CPU_V7
 876         help
 877           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
 878           erratum. Any asynchronous access to the L2 cache may encounter a
 879           situation in which recent store transactions to the L2 cache are lost
 880           and overwritten with stale memory contents from external memory. The
 881           workaround disables the write-allocate mode for the L2 cache via the
 882           ACTLR register. Note that setting specific bits in the ACTLR register
 883           may not be available in non-secure mode.
 884
 885 endmenu
 886
 887 source "arch/arm/common/Kconfig"
 888
 889 config FORCE_MAX_ZONEORDER
 890         int
 891         depends on SA1111
 892         default "9"
 893
 894 menu "Bus support"
 895
 896 config ARM_AMBA
 897         bool
 898
 899 config ISA
 900         bool
 901         help
 902           Find out whether you have ISA slots on your motherboard.  ISA is the
 903           name of a bus system, i.e. the way the CPU talks to the other stuff
 904           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 905           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 906           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 907
 908 # Select ISA DMA controller support
 909 config ISA_DMA
 910         bool
 911         select ISA_DMA_API
 912
 913 # Select ISA DMA interface
 914 config ISA_DMA_API
 915         bool
 916
 917 config PCI
 918         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 919         help
 920           Find out whether you have a PCI motherboard. PCI is the name of a
 921           bus system, i.e. the way the CPU talks to the other stuff inside
 922           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 923           VESA. If you have PCI, say Y, otherwise N.
 924
 925 config PCI_SYSCALL
 926         def_bool PCI
 927
 928 # Select the host bridge type
 929 config PCI_HOST_VIA82C505
 930         bool
 931         depends on PCI && ARCH_SHARK
 932         default y
 933
 934 config PCI_HOST_ITE8152
 935         bool
 936         depends on PCI && MACH_ARMCORE
 937         default y
 938         select DMABOUNCE
 939
 940 source "drivers/pci/Kconfig"
 941
 942 source "drivers/pcmcia/Kconfig"
 943
 944 endmenu
 945
 946 menu "Kernel Features"
 947
 948 source "kernel/time/Kconfig"
 949
 950 config SMP
 951         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 952         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
 953                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
 954         depends on GENERIC_CLOCKEVENTS
 955         select USE_GENERIC_SMP_HELPERS
 956         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
 957         help
 958           This enables support for systems with more than one CPU. If you have
 959           a system with only one CPU, like most personal computers, say N. If
 960           you have a system with more than one CPU, say Y.
 961
 962           If you say N here, the kernel will run on single and multiprocessor
 963           machines, but will use only one CPU of a multiprocessor machine. If
 964           you say Y here, the kernel will run on many, but not all, single
 965           processor machines. On a single processor machine, the kernel will
 966           run faster if you say N here.
 967
 968           See also <file:Documentation/i386/IO-APIC.txt>,
 969           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 970           <http://www.linuxdoc.org/docs.html#howto>.
 971
 972           If you don't know what to do here, say N.
 973
 974 config HAVE_ARM_SCU
 975         bool
 976         depends on SMP
 977         help
 978           This option enables support for the ARM system coherency unit
 979
 980 config HAVE_ARM_TWD
 981         bool
 982         depends on SMP
 983         help
 984           This options enables support for the ARM timer and watchdog unit
 985
 986 choice
 987         prompt "Memory split"
 988         default VMSPLIT_3G
 989         help
 990           Select the desired split between kernel and user memory.
 991
 992           If you are not absolutely sure what you are doing, leave this
 993           option alone!
 994
 995         config VMSPLIT_3G
 996                 bool "3G/1G user/kernel split"
 997         config VMSPLIT_2G
 998                 bool "2G/2G user/kernel split"
 999         config VMSPLIT_1G
1000                 bool "1G/3G user/kernel split"
1001 endchoice
1002
1003 config PAGE_OFFSET
1004         hex
1005         default 0x40000000 if VMSPLIT_1G
1006         default 0x80000000 if VMSPLIT_2G
1007         default 0xC0000000
1008
1009 config NR_CPUS
1010         int "Maximum number of CPUs (2-32)"
1011         range 2 32
1012         depends on SMP
1013         default "4"
1014
1015 config HOTPLUG_CPU
1016         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1017         depends on SMP && HOTPLUG && EXPERIMENTAL
1018         help
1019           Say Y here to experiment with turning CPUs off and on.  CPUs
1020           can be controlled through /sys/devices/system/cpu.
1021
1022 config LOCAL_TIMERS
1023         bool "Use local timer interrupts"
1024         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1025                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
1026         default y
1027         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
1028         help
1029           Enable support for local timers on SMP platforms, rather then the
1030           legacy IPI broadcast method.  Local timers allows the system
1031           accounting to be spread across the timer interval, preventing a
1032           "thundering herd" at every timer tick.
1033
1034 source kernel/Kconfig.preempt
1035
1036 config HZ
1037         int
1038         default 128 if ARCH_L7200
1039         default 200 if ARCH_EBSA110 || ARCH_S3C2410
1040         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1041         default AT91_TIMER_HZ if ARCH_AT91
1042         default 100
1043
1044 config THUMB2_KERNEL
1045         bool "Compile the kernel in Thumb-2 mode"
1046         depends on CPU_V7 && EXPERIMENTAL
1047         select AEABI
1048         select ARM_ASM_UNIFIED
1049         help
1050           By enabling this option, the kernel will be compiled in
1051           Thumb-2 mode. A compiler/assembler that understand the unified
1052           ARM-Thumb syntax is needed.
1053
1054           If unsure, say N.
1055
1056 config ARM_ASM_UNIFIED
1057         bool
1058
1059 config AEABI
1060         bool "Use the ARM EABI to compile the kernel"
1061         help
1062           This option allows for the kernel to be compiled using the latest
1063           ARM ABI (aka EABI).  This is only useful if you are using a user
1064           space environment that is also compiled with EABI.
1065
1066           Since there are major incompatibilities between the legacy ABI and
1067           EABI, especially with regard to structure member alignment, this
1068           option also changes the kernel syscall calling convention to
1069           disambiguate both ABIs and allow for backward compatibility support
1070           (selected with CONFIG_OABI_COMPAT).
1071
1072           To use this you need GCC version 4.0.0 or later.
1073
1074 config OABI_COMPAT
1075         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1076         depends on AEABI && EXPERIMENTAL
1077         default y
1078         help
1079           This option preserves the old syscall interface along with the
1080           new (ARM EABI) one. It also provides a compatibility layer to
1081           intercept syscalls that have structure arguments which layout
1082           in memory differs between the legacy ABI and the new ARM EABI
1083           (only for non "thumb" binaries). This option adds a tiny
1084           overhead to all syscalls and produces a slightly larger kernel.
1085           If you know you'll be using only pure EABI user space then you
1086           can say N here. If this option is not selected and you attempt
1087           to execute a legacy ABI binary then the result will be
1088           UNPREDICTABLE (in fact it can be predicted that it won't work
1089           at all). If in doubt say Y.
1090
1091 config ARCH_HAS_HOLES_MEMORYMODEL
1092         bool
1093
1094 # Discontigmem is deprecated
1095 config ARCH_DISCONTIGMEM_ENABLE
1096         bool
1097
1098 config ARCH_SPARSEMEM_ENABLE
1099         bool
1100
1101 config ARCH_SPARSEMEM_DEFAULT
1102         def_bool ARCH_SPARSEMEM_ENABLE
1103
1104 config ARCH_SELECT_MEMORY_MODEL
1105         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1106
1107 config NODES_SHIFT
1108         int
1109         default "4" if ARCH_LH7A40X
1110         default "2"
1111         depends on NEED_MULTIPLE_NODES
1112
1113 config HIGHMEM
1114         bool "High Memory Support (EXPERIMENTAL)"
1115         depends on MMU && EXPERIMENTAL
1116         help
1117           The address space of ARM processors is only 4 Gigabytes large
1118           and it has to accommodate user address space, kernel address
1119           space as well as some memory mapped IO. That means that, if you
1120           have a large amount of physical memory and/or IO, not all of the
1121           memory can be "permanently mapped" by the kernel. The physical
1122           memory that is not permanently mapped is called "high memory".
1123
1124           Depending on the selected kernel/user memory split, minimum
1125           vmalloc space and actual amount of RAM, you may not need this
1126           option which should result in a slightly faster kernel.
1127
1128           If unsure, say n.
1129
1130 config HIGHPTE
1131         bool "Allocate 2nd-level pagetables from highmem"
1132         depends on HIGHMEM
1133         depends on !OUTER_CACHE
1134
1135 source "mm/Kconfig"
1136
1137 config LEDS
1138         bool "Timer and CPU usage LEDs"
1139         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1140                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1141                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1142                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1143                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1144                    ARCH_AT91 || ARCH_DAVINCI || \
1145                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1146         help
1147           If you say Y here, the LEDs on your machine will be used
1148           to provide useful information about your current system status.
1149
1150           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1151           be able to select which LEDs are active using the options below. If
1152           you are compiling a kernel for the EBSA-110 or the LART however, the
1153           red LED will simply flash regularly to indicate that the system is
1154           still functional. It is safe to say Y here if you have a CATS
1155           system, but the driver will do nothing.
1156
1157 config LEDS_TIMER
1158         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1159                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1160                             || MACH_OMAP_PERSEUS2
1161         depends on LEDS
1162         depends on !GENERIC_CLOCKEVENTS
1163         default y if ARCH_EBSA110
1164         help
1165           If you say Y here, one of the system LEDs (the green one on the
1166           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1167           will flash regularly to indicate that the system is still
1168           operational. This is mainly useful to kernel hackers who are
1169           debugging unstable kernels.
1170
1171           The LART uses the same LED for both Timer LED and CPU usage LED
1172           functions. You may choose to use both, but the Timer LED function
1173           will overrule the CPU usage LED.
1174
1175 config LEDS_CPU
1176         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1177                         !ARCH_OMAP) \
1178                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1179                         || MACH_OMAP_PERSEUS2
1180         depends on LEDS
1181         help
1182           If you say Y here, the red LED will be used to give a good real
1183           time indication of CPU usage, by lighting whenever the idle task
1184           is not currently executing.
1185
1186           The LART uses the same LED for both Timer LED and CPU usage LED
1187           functions. You may choose to use both, but the Timer LED function
1188           will overrule the CPU usage LED.
1189
1190 config ALIGNMENT_TRAP
1191         bool
1192         depends on CPU_CP15_MMU
1193         default y if !ARCH_EBSA110
1194         help
1195           ARM processors cannot fetch/store information which is not
1196           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1197           address divisible by 4. On 32-bit ARM processors, these non-aligned
1198           fetch/store instructions will be emulated in software if you say
1199           here, which has a severe performance impact. This is necessary for
1200           correct operation of some network protocols. With an IP-only
1201           configuration it is safe to say N, otherwise say Y.
1202
1203 config UACCESS_WITH_MEMCPY
1204         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1205         depends on MMU && EXPERIMENTAL
1206         default y if CPU_FEROCEON
1207         help
1208           Implement faster copy_to_user and clear_user methods for CPU
1209           cores where a 8-word STM instruction give significantly higher
1210           memory write throughput than a sequence of individual 32bit stores.
1211
1212           A possible side effect is a slight increase in scheduling latency
1213           between threads sharing the same address space if they invoke
1214           such copy operations with large buffers.
1215
1216           However, if the CPU data cache is using a write-allocate mode,
1217           this option is unlikely to provide any performance gain.
1218
1219 endmenu
1220
1221 menu "Boot options"
1222
1223 # Compressed boot loader in ROM.  Yes, we really want to ask about
1224 # TEXT and BSS so we preserve their values in the config files.
1225 config ZBOOT_ROM_TEXT
1226         hex "Compressed ROM boot loader base address"
1227         default "0"
1228         help
1229           The physical address at which the ROM-able zImage is to be
1230           placed in the target.  Platforms which normally make use of
1231           ROM-able zImage formats normally set this to a suitable
1232           value in their defconfig file.
1233
1234           If ZBOOT_ROM is not enabled, this has no effect.
1235
1236 config ZBOOT_ROM_BSS
1237         hex "Compressed ROM boot loader BSS address"
1238         default "0"
1239         help
1240           The base address of an area of read/write memory in the target
1241           for the ROM-able zImage which must be available while the
1242           decompressor is running. It must be large enough to hold the
1243           entire decompressed kernel plus an additional 128 KiB.
1244           Platforms which normally make use of ROM-able zImage formats
1245           normally set this to a suitable value in their defconfig file.
1246
1247           If ZBOOT_ROM is not enabled, this has no effect.
1248
1249 config ZBOOT_ROM
1250         bool "Compressed boot loader in ROM/flash"
1251         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1252         help
1253           Say Y here if you intend to execute your compressed kernel image
1254           (zImage) directly from ROM or flash.  If unsure, say N.
1255
1256 config CMDLINE
1257         string "Default kernel command string"
1258         default ""
1259         help
1260           On some architectures (EBSA110 and CATS), there is currently no way
1261           for the boot loader to pass arguments to the kernel. For these
1262           architectures, you should supply some command-line options at build
1263           time by entering them here. As a minimum, you should specify the
1264           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1265
1266 config XIP_KERNEL
1267         bool "Kernel Execute-In-Place from ROM"
1268         depends on !ZBOOT_ROM
1269         help
1270           Execute-In-Place allows the kernel to run from non-volatile storage
1271           directly addressable by the CPU, such as NOR flash. This saves RAM
1272           space since the text section of the kernel is not loaded from flash
1273           to RAM.  Read-write sections, such as the data section and stack,
1274           are still copied to RAM.  The XIP kernel is not compressed since
1275           it has to run directly from flash, so it will take more space to
1276           store it.  The flash address used to link the kernel object files,
1277           and for storing it, is configuration dependent. Therefore, if you
1278           say Y here, you must know the proper physical address where to
1279           store the kernel image depending on your own flash memory usage.
1280
1281           Also note that the make target becomes "make xipImage" rather than
1282           "make zImage" or "make Image".  The final kernel binary to put in
1283           ROM memory will be arch/arm/boot/xipImage.
1284
1285           If unsure, say N.
1286
1287 config XIP_PHYS_ADDR
1288         hex "XIP Kernel Physical Location"
1289         depends on XIP_KERNEL
1290         default "0x00080000"
1291         help
1292           This is the physical address in your flash memory the kernel will
1293           be linked for and stored to.  This address is dependent on your
1294           own flash usage.
1295
1296 config KEXEC
1297         bool "Kexec system call (EXPERIMENTAL)"
1298         depends on EXPERIMENTAL
1299         help
1300           kexec is a system call that implements the ability to shutdown your
1301           current kernel, and to start another kernel.  It is like a reboot
1302           but it is independent of the system firmware.   And like a reboot
1303           you can start any kernel with it, not just Linux.
1304
1305           It is an ongoing process to be certain the hardware in a machine
1306           is properly shutdown, so do not be surprised if this code does not
1307           initially work for you.  It may help to enable device hotplugging
1308           support.
1309
1310 config ATAGS_PROC
1311         bool "Export atags in procfs"
1312         depends on KEXEC
1313         default y
1314         help
1315           Should the atags used to boot the kernel be exported in an "atags"
1316           file in procfs. Useful with kexec.
1317
1318 endmenu
1319
1320 menu "CPU Power Management"
1321
1322 if ARCH_HAS_CPUFREQ
1323
1324 source "drivers/cpufreq/Kconfig"
1325
1326 config CPU_FREQ_SA1100
1327         bool
1328         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1329         default y
1330
1331 config CPU_FREQ_SA1110
1332         bool
1333         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1334         default y
1335
1336 config CPU_FREQ_INTEGRATOR
1337         tristate "CPUfreq driver for ARM Integrator CPUs"
1338         depends on ARCH_INTEGRATOR && CPU_FREQ
1339         default y
1340         help
1341           This enables the CPUfreq driver for ARM Integrator CPUs.
1342
1343           For details, take a look at <file:Documentation/cpu-freq>.
1344
1345           If in doubt, say Y.
1346
1347 config CPU_FREQ_PXA
1348         bool
1349         depends on CPU_FREQ && ARCH_PXA && PXA25x
1350         default y
1351         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1352
1353 config CPU_FREQ_S3C64XX
1354         bool "CPUfreq support for Samsung S3C64XX CPUs"
1355         depends on CPU_FREQ && CPU_S3C6410
1356
1357 config CPU_FREQ_S3C
1358         bool
1359         help
1360           Internal configuration node for common cpufreq on Samsung SoC
1361
1362 config CPU_FREQ_S3C24XX
1363         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1364         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1365         select CPU_FREQ_S3C
1366         help
1367           This enables the CPUfreq driver for the Samsung S3C24XX family
1368           of CPUs.
1369
1370           For details, take a look at <file:Documentation/cpu-freq>.
1371
1372           If in doubt, say N.
1373
1374 config CPU_FREQ_S3C24XX_PLL
1375         bool "Support CPUfreq changing of PLL frequency"
1376         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1377         help
1378           Compile in support for changing the PLL frequency from the
1379           S3C24XX series CPUfreq driver. The PLL takes time to settle
1380           after a frequency change, so by default it is not enabled.
1381
1382           This also means that the PLL tables for the selected CPU(s) will
1383           be built which may increase the size of the kernel image.
1384
1385 config CPU_FREQ_S3C24XX_DEBUG
1386         bool "Debug CPUfreq Samsung driver core"
1387         depends on CPU_FREQ_S3C24XX
1388         help
1389           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1390
1391 config CPU_FREQ_S3C24XX_IODEBUG
1392         bool "Debug CPUfreq Samsung driver IO timing"
1393         depends on CPU_FREQ_S3C24XX
1394         help
1395           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1396
1397 config CPU_FREQ_S3C24XX_DEBUGFS
1398         bool "Export debugfs for CPUFreq"
1399         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1400         help
1401           Export status information via debugfs.
1402
1403 endif
1404
1405 source "drivers/cpuidle/Kconfig"
1406
1407 endmenu
1408
1409 menu "Floating point emulation"
1410
1411 comment "At least one emulation must be selected"
1412
1413 config FPE_NWFPE
1414         bool "NWFPE math emulation"
1415         depends on !AEABI || OABI_COMPAT
1416         ---help---
1417           Say Y to include the NWFPE floating point emulator in the kernel.
1418           This is necessary to run most binaries. Linux does not currently
1419           support floating point hardware so you need to say Y here even if
1420           your machine has an FPA or floating point co-processor podule.
1421
1422           You may say N here if you are going to load the Acorn FPEmulator
1423           early in the bootup.
1424
1425 config FPE_NWFPE_XP
1426         bool "Support extended precision"
1427         depends on FPE_NWFPE
1428         help
1429           Say Y to include 80-bit support in the kernel floating-point
1430           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1431           Note that gcc does not generate 80-bit operations by default,
1432           so in most cases this option only enlarges the size of the
1433           floating point emulator without any good reason.
1434
1435           You almost surely want to say N here.
1436
1437 config FPE_FASTFPE
1438         bool "FastFPE math emulation (EXPERIMENTAL)"
1439         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1440         ---help---
1441           Say Y here to include the FAST floating point emulator in the kernel.
1442           This is an experimental much faster emulator which now also has full
1443           precision for the mantissa.  It does not support any exceptions.
1444           It is very simple, and approximately 3-6 times faster than NWFPE.
1445
1446           It should be sufficient for most programs.  It may be not suitable
1447           for scientific calculations, but you have to check this for yourself.
1448           If you do not feel you need a faster FP emulation you should better
1449           choose NWFPE.
1450
1451 config VFP
1452         bool "VFP-format floating point maths"
1453         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1454         help
1455           Say Y to include VFP support code in the kernel. This is needed
1456           if your hardware includes a VFP unit.
1457
1458           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1459           release notes and additional status information.
1460
1461           Say N if your target does not have VFP hardware.
1462
1463 config VFPv3
1464         bool
1465         depends on VFP
1466         default y if CPU_V7
1467
1468 config NEON
1469         bool "Advanced SIMD (NEON) Extension support"
1470         depends on VFPv3 && CPU_V7
1471         help
1472           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1473           Extension.
1474
1475 endmenu
1476
1477 menu "Userspace binary formats"
1478
1479 source "fs/Kconfig.binfmt"
1480
1481 config ARTHUR
1482         tristate "RISC OS personality"
1483         depends on !AEABI
1484         help
1485           Say Y here to include the kernel code necessary if you want to run
1486           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1487           experimental; if this sounds frightening, say N and sleep in peace.
1488           You can also say M here to compile this support as a module (which
1489           will be called arthur).
1490
1491 endmenu
1492
1493 menu "Power management options"
1494
1495 source "kernel/power/Kconfig"
1496
1497 config ARCH_SUSPEND_POSSIBLE
1498         def_bool y
1499
1500 endmenu
1501
1502 source "net/Kconfig"
1503
1504 source "drivers/Kconfig"
1505
1506 source "fs/Kconfig"
1507
1508 source "arch/arm/Kconfig.debug"
1509
1510 source "security/Kconfig"
1511
1512 source "crypto/Kconfig"
1513
1514 source "lib/Kconfig"