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         select HAVE_KERNEL_GZIP
  22         select HAVE_KERNEL_LZO
  23         help
  24           The ARM series is a line of low-power-consumption RISC chip designs
  25           licensed by ARM Ltd and targeted at embedded applications and
  26           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  27           manufactured, but legacy ARM-based PC hardware remains popular in
  28           Europe.  There is an ARM Linux project with a web page at
  29           <http://www.arm.linux.org.uk/>.
  30
  31 config HAVE_PWM
  32         bool
  33
  34 config SYS_SUPPORTS_APM_EMULATION
  35         bool
  36
  37 config GENERIC_GPIO
  38         bool
  39
  40 config GENERIC_TIME
  41         bool
  42
  43 config GENERIC_CLOCKEVENTS
  44         bool
  45
  46 config GENERIC_CLOCKEVENTS_BROADCAST
  47         bool
  48         depends on GENERIC_CLOCKEVENTS
  49         default y if SMP && !LOCAL_TIMERS
  50
  51 config HAVE_TCM
  52         bool
  53         select GENERIC_ALLOCATOR
  54
  55 config NO_IOPORT
  56         bool
  57
  58 config EISA
  59         bool
  60         ---help---
  61           The Extended Industry Standard Architecture (EISA) bus was
  62           developed as an open alternative to the IBM MicroChannel bus.
  63
  64           The EISA bus provided some of the features of the IBM MicroChannel
  65           bus while maintaining backward compatibility with cards made for
  66           the older ISA bus.  The EISA bus saw limited use between 1988 and
  67           1995 when it was made obsolete by the PCI bus.
  68
  69           Say Y here if you are building a kernel for an EISA-based machine.
  70
  71           Otherwise, say N.
  72
  73 config SBUS
  74         bool
  75
  76 config MCA
  77         bool
  78         help
  79           MicroChannel Architecture is found in some IBM PS/2 machines and
  80           laptops.  It is a bus system similar to PCI or ISA. See
  81           <file:Documentation/mca.txt> (and especially the web page given
  82           there) before attempting to build an MCA bus kernel.
  83
  84 config GENERIC_HARDIRQS
  85         bool
  86         default y
  87
  88 config STACKTRACE_SUPPORT
  89         bool
  90         default y
  91
  92 config HAVE_LATENCYTOP_SUPPORT
  93         bool
  94         depends on !SMP
  95         default y
  96
  97 config LOCKDEP_SUPPORT
  98         bool
  99         default y
 100
 101 config TRACE_IRQFLAGS_SUPPORT
 102         bool
 103         default y
 104
 105 config HARDIRQS_SW_RESEND
 106         bool
 107         default y
 108
 109 config GENERIC_IRQ_PROBE
 110         bool
 111         default y
 112
 113 config GENERIC_LOCKBREAK
 114         bool
 115         default y
 116         depends on SMP && PREEMPT
 117
 118 config RWSEM_GENERIC_SPINLOCK
 119         bool
 120         default y
 121
 122 config RWSEM_XCHGADD_ALGORITHM
 123         bool
 124
 125 config ARCH_HAS_ILOG2_U32
 126         bool
 127
 128 config ARCH_HAS_ILOG2_U64
 129         bool
 130
 131 config ARCH_HAS_CPUFREQ
 132         bool
 133         help
 134           Internal node to signify that the ARCH has CPUFREQ support
 135           and that the relevant menu configurations are displayed for
 136           it.
 137
 138 config GENERIC_HWEIGHT
 139         bool
 140         default y
 141
 142 config GENERIC_CALIBRATE_DELAY
 143         bool
 144         default y
 145
 146 config ARCH_MAY_HAVE_PC_FDC
 147         bool
 148
 149 config ZONE_DMA
 150         bool
 151
 152 config GENERIC_ISA_DMA
 153         bool
 154
 155 config FIQ
 156         bool
 157
 158 config ARCH_MTD_XIP
 159         bool
 160
 161 config GENERIC_HARDIRQS_NO__DO_IRQ
 162         def_bool y
 163
 164 if OPROFILE
 165
 166 config OPROFILE_ARMV6
 167         def_bool y
 168         depends on CPU_V6 && !SMP
 169         select OPROFILE_ARM11_CORE
 170
 171 config OPROFILE_MPCORE
 172         def_bool y
 173         depends on CPU_V6 && SMP
 174         select OPROFILE_ARM11_CORE
 175
 176 config OPROFILE_ARM11_CORE
 177         bool
 178
 179 config OPROFILE_ARMV7
 180         def_bool y
 181         depends on CPU_V7 && !SMP
 182         bool
 183
 184 endif
 185
 186 config VECTORS_BASE
 187         hex
 188         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 189         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 190         default 0x00000000
 191         help
 192           The base address of exception vectors.
 193
 194 source "init/Kconfig"
 195
 196 source "kernel/Kconfig.freezer"
 197
 198 menu "System Type"
 199
 200 config MMU
 201         bool "MMU-based Paged Memory Management Support"
 202         default y
 203         help
 204           Select if you want MMU-based virtualised addressing space
 205           support by paged memory management. If unsure, say 'Y'.
 206
 207 choice
 208         prompt "ARM system type"
 209         default ARCH_VERSATILE
 210
 211 config ARCH_AAEC2000
 212         bool "Agilent AAEC-2000 based"
 213         select CPU_ARM920T
 214         select ARM_AMBA
 215         select HAVE_CLK
 216         help
 217           This enables support for systems based on the Agilent AAEC-2000
 218
 219 config ARCH_INTEGRATOR
 220         bool "ARM Ltd. Integrator family"
 221         select ARM_AMBA
 222         select ARCH_HAS_CPUFREQ
 223         select HAVE_CLK
 224         select COMMON_CLKDEV
 225         select ICST525
 226         help
 227           Support for ARM's Integrator platform.
 228
 229 config ARCH_REALVIEW
 230         bool "ARM Ltd. RealView family"
 231         select ARM_AMBA
 232         select HAVE_CLK
 233         select COMMON_CLKDEV
 234         select ICST307
 235         select GENERIC_TIME
 236         select GENERIC_CLOCKEVENTS
 237         select ARCH_WANT_OPTIONAL_GPIOLIB
 238         help
 239           This enables support for ARM Ltd RealView boards.
 240
 241 config ARCH_VERSATILE
 242         bool "ARM Ltd. Versatile family"
 243         select ARM_AMBA
 244         select ARM_VIC
 245         select HAVE_CLK
 246         select COMMON_CLKDEV
 247         select ICST307
 248         select GENERIC_TIME
 249         select GENERIC_CLOCKEVENTS
 250         select ARCH_WANT_OPTIONAL_GPIOLIB
 251         help
 252           This enables support for ARM Ltd Versatile board.
 253
 254 config ARCH_AT91
 255         bool "Atmel AT91"
 256         select GENERIC_GPIO
 257         select ARCH_REQUIRE_GPIOLIB
 258         select HAVE_CLK
 259         help
 260           This enables support for systems based on the Atmel AT91RM9200,
 261           AT91SAM9 and AT91CAP9 processors.
 262
 263 config ARCH_CLPS711X
 264         bool "Cirrus Logic CLPS711x/EP721x-based"
 265         select CPU_ARM720T
 266         help
 267           Support for Cirrus Logic 711x/721x based boards.
 268
 269 config ARCH_GEMINI
 270         bool "Cortina Systems Gemini"
 271         select CPU_FA526
 272         select GENERIC_GPIO
 273         select ARCH_REQUIRE_GPIOLIB
 274         help
 275           Support for the Cortina Systems Gemini family SoCs
 276
 277 config ARCH_EBSA110
 278         bool "EBSA-110"
 279         select CPU_SA110
 280         select ISA
 281         select NO_IOPORT
 282         help
 283           This is an evaluation board for the StrongARM processor available
 284           from Digital. It has limited hardware on-board, including an
 285           Ethernet interface, two PCMCIA sockets, two serial ports and a
 286           parallel port.
 287
 288 config ARCH_EP93XX
 289         bool "EP93xx-based"
 290         select CPU_ARM920T
 291         select ARM_AMBA
 292         select ARM_VIC
 293         select GENERIC_GPIO
 294         select HAVE_CLK
 295         select COMMON_CLKDEV
 296         select ARCH_REQUIRE_GPIOLIB
 297         select ARCH_HAS_HOLES_MEMORYMODEL
 298         help
 299           This enables support for the Cirrus EP93xx series of CPUs.
 300
 301 config ARCH_FOOTBRIDGE
 302         bool "FootBridge"
 303         select CPU_SA110
 304         select FOOTBRIDGE
 305         help
 306           Support for systems based on the DC21285 companion chip
 307           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 308
 309 config ARCH_MXC
 310         bool "Freescale MXC/iMX-based"
 311         select GENERIC_TIME
 312         select GENERIC_CLOCKEVENTS
 313         select ARCH_MTD_XIP
 314         select GENERIC_GPIO
 315         select ARCH_REQUIRE_GPIOLIB
 316         select HAVE_CLK
 317         help
 318           Support for Freescale MXC/iMX-based family of processors
 319
 320 config ARCH_STMP3XXX
 321         bool "Freescale STMP3xxx"
 322         select CPU_ARM926T
 323         select HAVE_CLK
 324         select COMMON_CLKDEV
 325         select ARCH_REQUIRE_GPIOLIB
 326         select GENERIC_TIME
 327         select GENERIC_CLOCKEVENTS
 328         select GENERIC_GPIO
 329         select USB_ARCH_HAS_EHCI
 330         help
 331           Support for systems based on the Freescale 3xxx CPUs.
 332
 333 config ARCH_NETX
 334         bool "Hilscher NetX based"
 335         select CPU_ARM926T
 336         select ARM_VIC
 337         select GENERIC_CLOCKEVENTS
 338         select GENERIC_TIME
 339         help
 340           This enables support for systems based on the Hilscher NetX Soc
 341
 342 config ARCH_H720X
 343         bool "Hynix HMS720x-based"
 344         select CPU_ARM720T
 345         select ISA_DMA_API
 346         help
 347           This enables support for systems based on the Hynix HMS720x
 348
 349 config ARCH_NOMADIK
 350         bool "STMicroelectronics Nomadik"
 351         select ARM_AMBA
 352         select ARM_VIC
 353         select CPU_ARM926T
 354         select HAVE_CLK
 355         select COMMON_CLKDEV
 356         select GENERIC_TIME
 357         select GENERIC_CLOCKEVENTS
 358         select GENERIC_GPIO
 359         select ARCH_REQUIRE_GPIOLIB
 360         help
 361           Support for the Nomadik platform by ST-Ericsson
 362
 363 config ARCH_IOP13XX
 364         bool "IOP13xx-based"
 365         depends on MMU
 366         select CPU_XSC3
 367         select PLAT_IOP
 368         select PCI
 369         select ARCH_SUPPORTS_MSI
 370         select VMSPLIT_1G
 371         help
 372           Support for Intel's IOP13XX (XScale) family of processors.
 373
 374 config ARCH_IOP32X
 375         bool "IOP32x-based"
 376         depends on MMU
 377         select CPU_XSCALE
 378         select PLAT_IOP
 379         select PCI
 380         select GENERIC_GPIO
 381         select ARCH_REQUIRE_GPIOLIB
 382         help
 383           Support for Intel's 80219 and IOP32X (XScale) family of
 384           processors.
 385
 386 config ARCH_IOP33X
 387         bool "IOP33x-based"
 388         depends on MMU
 389         select CPU_XSCALE
 390         select PLAT_IOP
 391         select PCI
 392         select GENERIC_GPIO
 393         select ARCH_REQUIRE_GPIOLIB
 394         help
 395           Support for Intel's IOP33X (XScale) family of processors.
 396
 397 config ARCH_IXP23XX
 398         bool "IXP23XX-based"
 399         depends on MMU
 400         select CPU_XSC3
 401         select PCI
 402         help
 403           Support for Intel's IXP23xx (XScale) family of processors.
 404
 405 config ARCH_IXP2000
 406         bool "IXP2400/2800-based"
 407         depends on MMU
 408         select CPU_XSCALE
 409         select PCI
 410         help
 411           Support for Intel's IXP2400/2800 (XScale) family of processors.
 412
 413 config ARCH_IXP4XX
 414         bool "IXP4xx-based"
 415         depends on MMU
 416         select CPU_XSCALE
 417         select GENERIC_GPIO
 418         select GENERIC_TIME
 419         select GENERIC_CLOCKEVENTS
 420         select DMABOUNCE if PCI
 421         help
 422           Support for Intel's IXP4XX (XScale) family of processors.
 423
 424 config ARCH_L7200
 425         bool "LinkUp-L7200"
 426         select CPU_ARM720T
 427         select FIQ
 428         help
 429           Say Y here if you intend to run this kernel on a LinkUp Systems
 430           L7200 Software Development Board which uses an ARM720T processor.
 431           Information on this board can be obtained at:
 432
 433           <http://www.linkupsys.com/>
 434
 435           If you have any questions or comments about the Linux kernel port
 436           to this board, send e-mail to <sjhill@cotw.com>.
 437
 438 config ARCH_DOVE
 439         bool "Marvell Dove"
 440         select PCI
 441         select GENERIC_GPIO
 442         select ARCH_REQUIRE_GPIOLIB
 443         select GENERIC_TIME
 444         select GENERIC_CLOCKEVENTS
 445         select PLAT_ORION
 446         help
 447           Support for the Marvell Dove SoC 88AP510
 448
 449 config ARCH_KIRKWOOD
 450         bool "Marvell Kirkwood"
 451         select CPU_FEROCEON
 452         select PCI
 453         select GENERIC_GPIO
 454         select ARCH_REQUIRE_GPIOLIB
 455         select GENERIC_TIME
 456         select GENERIC_CLOCKEVENTS
 457         select PLAT_ORION
 458         help
 459           Support for the following Marvell Kirkwood series SoCs:
 460           88F6180, 88F6192 and 88F6281.
 461
 462 config ARCH_LOKI
 463         bool "Marvell Loki (88RC8480)"
 464         select CPU_FEROCEON
 465         select GENERIC_TIME
 466         select GENERIC_CLOCKEVENTS
 467         select PLAT_ORION
 468         help
 469           Support for the Marvell Loki (88RC8480) SoC.
 470
 471 config ARCH_MV78XX0
 472         bool "Marvell MV78xx0"
 473         select CPU_FEROCEON
 474         select PCI
 475         select GENERIC_GPIO
 476         select ARCH_REQUIRE_GPIOLIB
 477         select GENERIC_TIME
 478         select GENERIC_CLOCKEVENTS
 479         select PLAT_ORION
 480         help
 481           Support for the following Marvell MV78xx0 series SoCs:
 482           MV781x0, MV782x0.
 483
 484 config ARCH_ORION5X
 485         bool "Marvell Orion"
 486         depends on MMU
 487         select CPU_FEROCEON
 488         select PCI
 489         select GENERIC_GPIO
 490         select ARCH_REQUIRE_GPIOLIB
 491         select GENERIC_TIME
 492         select GENERIC_CLOCKEVENTS
 493         select PLAT_ORION
 494         help
 495           Support for the following Marvell Orion 5x series SoCs:
 496           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 497           Orion-2 (5281), Orion-1-90 (6183).
 498
 499 config ARCH_MMP
 500         bool "Marvell PXA168/910"
 501         depends on MMU
 502         select GENERIC_GPIO
 503         select ARCH_REQUIRE_GPIOLIB
 504         select HAVE_CLK
 505         select COMMON_CLKDEV
 506         select GENERIC_TIME
 507         select GENERIC_CLOCKEVENTS
 508         select TICK_ONESHOT
 509         select PLAT_PXA
 510         help
 511           Support for Marvell's PXA168/910 processor line.
 512
 513 config ARCH_KS8695
 514         bool "Micrel/Kendin KS8695"
 515         select CPU_ARM922T
 516         select GENERIC_GPIO
 517         select ARCH_REQUIRE_GPIOLIB
 518         help
 519           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 520           System-on-Chip devices.
 521
 522 config ARCH_NS9XXX
 523         bool "NetSilicon NS9xxx"
 524         select CPU_ARM926T
 525         select GENERIC_GPIO
 526         select GENERIC_TIME
 527         select GENERIC_CLOCKEVENTS
 528         select HAVE_CLK
 529         help
 530           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 531           System.
 532
 533           <http://www.digi.com/products/microprocessors/index.jsp>
 534
 535 config ARCH_W90X900
 536         bool "Nuvoton W90X900 CPU"
 537         select CPU_ARM926T
 538         select ARCH_REQUIRE_GPIOLIB
 539         select GENERIC_GPIO
 540         select HAVE_CLK
 541         select COMMON_CLKDEV
 542         select GENERIC_TIME
 543         select GENERIC_CLOCKEVENTS
 544         help
 545           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 546           At present, the w90x900 has been renamed nuc900, regarding
 547           the ARM series product line, you can login the following
 548           link address to know more.
 549
 550           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 551                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 552
 553 config ARCH_PNX4008
 554         bool "Philips Nexperia PNX4008 Mobile"
 555         select CPU_ARM926T
 556         select HAVE_CLK
 557         help
 558           This enables support for Philips PNX4008 mobile platform.
 559
 560 config ARCH_PXA
 561         bool "PXA2xx/PXA3xx-based"
 562         depends on MMU
 563         select ARCH_MTD_XIP
 564         select ARCH_HAS_CPUFREQ
 565         select GENERIC_GPIO
 566         select HAVE_CLK
 567         select COMMON_CLKDEV
 568         select ARCH_REQUIRE_GPIOLIB
 569         select GENERIC_TIME
 570         select GENERIC_CLOCKEVENTS
 571         select TICK_ONESHOT
 572         select PLAT_PXA
 573         help
 574           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 575
 576 config ARCH_MSM
 577         bool "Qualcomm MSM"
 578         select CPU_V6
 579         select GENERIC_TIME
 580         select GENERIC_CLOCKEVENTS
 581         help
 582           Support for Qualcomm MSM7K based systems.  This runs on the ARM11
 583           apps processor of the MSM7K and depends on a shared memory
 584           interface to the ARM9 modem processor which runs the baseband stack
 585           and controls some vital subsystems (clock and power control, etc).
 586
 587 config ARCH_RPC
 588         bool "RiscPC"
 589         select ARCH_ACORN
 590         select FIQ
 591         select TIMER_ACORN
 592         select ARCH_MAY_HAVE_PC_FDC
 593         select HAVE_PATA_PLATFORM
 594         select ISA_DMA_API
 595         select NO_IOPORT
 596         select ARCH_SPARSEMEM_ENABLE
 597         help
 598           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 599           CD-ROM interface, serial and parallel port, and the floppy drive.
 600
 601 config ARCH_SA1100
 602         bool "SA1100-based"
 603         select CPU_SA1100
 604         select ISA
 605         select ARCH_SPARSEMEM_ENABLE
 606         select ARCH_MTD_XIP
 607         select ARCH_HAS_CPUFREQ
 608         select CPU_FREQ
 609         select GENERIC_GPIO
 610         select GENERIC_TIME
 611         select GENERIC_CLOCKEVENTS
 612         select HAVE_CLK
 613         select TICK_ONESHOT
 614         select ARCH_REQUIRE_GPIOLIB
 615         help
 616           Support for StrongARM 11x0 based boards.
 617
 618 config ARCH_S3C2410
 619         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 620         select GENERIC_GPIO
 621         select ARCH_HAS_CPUFREQ
 622         select HAVE_CLK
 623         help
 624           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 625           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 626           the Samsung SMDK2410 development board (and derivatives).
 627
 628 config ARCH_S3C64XX
 629         bool "Samsung S3C64XX"
 630         select GENERIC_GPIO
 631         select HAVE_CLK
 632         select ARCH_HAS_CPUFREQ
 633         help
 634           Samsung S3C64XX series based systems
 635
 636 config ARCH_S5P6440
 637         bool "Samsung S5P6440"
 638         select CPU_V6
 639         select GENERIC_GPIO
 640         select HAVE_CLK
 641         help
 642           Samsung S5P6440 CPU based systems
 643
 644 config ARCH_S5PC1XX
 645         bool "Samsung S5PC1XX"
 646         select GENERIC_GPIO
 647         select HAVE_CLK
 648         select CPU_V7
 649         help
 650           Samsung S5PC1XX series based systems
 651
 652 config ARCH_SHARK
 653         bool "Shark"
 654         select CPU_SA110
 655         select ISA
 656         select ISA_DMA
 657         select ZONE_DMA
 658         select PCI
 659         help
 660           Support for the StrongARM based Digital DNARD machine, also known
 661           as "Shark" (<http://www.shark-linux.de/shark.html>).
 662
 663 config ARCH_LH7A40X
 664         bool "Sharp LH7A40X"
 665         select CPU_ARM922T
 666         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 667         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 668         help
 669           Say Y here for systems based on one of the Sharp LH7A40X
 670           System on a Chip processors.  These CPUs include an ARM922T
 671           core with a wide array of integrated devices for
 672           hand-held and low-power applications.
 673
 674 config ARCH_U300
 675         bool "ST-Ericsson U300 Series"
 676         depends on MMU
 677         select CPU_ARM926T
 678         select HAVE_TCM
 679         select ARM_AMBA
 680         select ARM_VIC
 681         select GENERIC_TIME
 682         select GENERIC_CLOCKEVENTS
 683         select HAVE_CLK
 684         select COMMON_CLKDEV
 685         select GENERIC_GPIO
 686         help
 687           Support for ST-Ericsson U300 series mobile platforms.
 688
 689 config ARCH_DAVINCI
 690         bool "TI DaVinci"
 691         select CPU_ARM926T
 692         select GENERIC_TIME
 693         select GENERIC_CLOCKEVENTS
 694         select GENERIC_GPIO
 695         select ARCH_REQUIRE_GPIOLIB
 696         select HAVE_CLK
 697         select ZONE_DMA
 698         select HAVE_IDE
 699         select COMMON_CLKDEV
 700         select GENERIC_ALLOCATOR
 701         select ARCH_HAS_HOLES_MEMORYMODEL
 702         help
 703           Support for TI's DaVinci platform.
 704
 705 config ARCH_OMAP
 706         bool "TI OMAP"
 707         select GENERIC_GPIO
 708         select HAVE_CLK
 709         select ARCH_REQUIRE_GPIOLIB
 710         select ARCH_HAS_CPUFREQ
 711         select GENERIC_TIME
 712         select GENERIC_CLOCKEVENTS
 713         select ARCH_HAS_HOLES_MEMORYMODEL
 714         help
 715           Support for TI's OMAP platform (OMAP1 and OMAP2).
 716
 717 config ARCH_BCMRING
 718         bool "Broadcom BCMRING"
 719         depends on MMU
 720         select CPU_V6
 721         select ARM_AMBA
 722         select COMMON_CLKDEV
 723         select GENERIC_TIME
 724         select GENERIC_CLOCKEVENTS
 725         select ARCH_WANT_OPTIONAL_GPIOLIB
 726         help
 727           Support for Broadcom's BCMRing platform.
 728
 729 config ARCH_U8500
 730         bool "ST-Ericsson U8500 Series"
 731         select CPU_V7
 732         select ARM_AMBA
 733         select GENERIC_TIME
 734         select GENERIC_CLOCKEVENTS
 735         select COMMON_CLKDEV
 736         help
 737           Support for ST-Ericsson's Ux500 architecture
 738
 739 endchoice
 740
 741 source "arch/arm/mach-aaec2000/Kconfig"
 742
 743 source "arch/arm/mach-at91/Kconfig"
 744
 745 source "arch/arm/mach-bcmring/Kconfig"
 746
 747 source "arch/arm/mach-clps711x/Kconfig"
 748
 749 source "arch/arm/mach-davinci/Kconfig"
 750
 751 source "arch/arm/mach-dove/Kconfig"
 752
 753 source "arch/arm/mach-ep93xx/Kconfig"
 754
 755 source "arch/arm/mach-footbridge/Kconfig"
 756
 757 source "arch/arm/mach-gemini/Kconfig"
 758
 759 source "arch/arm/mach-h720x/Kconfig"
 760
 761 source "arch/arm/mach-integrator/Kconfig"
 762
 763 source "arch/arm/mach-iop32x/Kconfig"
 764
 765 source "arch/arm/mach-iop33x/Kconfig"
 766
 767 source "arch/arm/mach-iop13xx/Kconfig"
 768
 769 source "arch/arm/mach-ixp4xx/Kconfig"
 770
 771 source "arch/arm/mach-ixp2000/Kconfig"
 772
 773 source "arch/arm/mach-ixp23xx/Kconfig"
 774
 775 source "arch/arm/mach-kirkwood/Kconfig"
 776
 777 source "arch/arm/mach-ks8695/Kconfig"
 778
 779 source "arch/arm/mach-lh7a40x/Kconfig"
 780
 781 source "arch/arm/mach-loki/Kconfig"
 782
 783 source "arch/arm/mach-msm/Kconfig"
 784
 785 source "arch/arm/mach-mv78xx0/Kconfig"
 786
 787 source "arch/arm/plat-mxc/Kconfig"
 788
 789 source "arch/arm/mach-netx/Kconfig"
 790
 791 source "arch/arm/mach-nomadik/Kconfig"
 792 source "arch/arm/plat-nomadik/Kconfig"
 793
 794 source "arch/arm/mach-ns9xxx/Kconfig"
 795
 796 source "arch/arm/plat-omap/Kconfig"
 797
 798 source "arch/arm/mach-omap1/Kconfig"
 799
 800 source "arch/arm/mach-omap2/Kconfig"
 801
 802 source "arch/arm/mach-orion5x/Kconfig"
 803
 804 source "arch/arm/mach-pxa/Kconfig"
 805 source "arch/arm/plat-pxa/Kconfig"
 806
 807 source "arch/arm/mach-mmp/Kconfig"
 808
 809 source "arch/arm/mach-realview/Kconfig"
 810
 811 source "arch/arm/mach-sa1100/Kconfig"
 812
 813 source "arch/arm/plat-samsung/Kconfig"
 814 source "arch/arm/plat-s3c24xx/Kconfig"
 815 source "arch/arm/plat-s3c64xx/Kconfig"
 816 source "arch/arm/plat-s3c/Kconfig"
 817 source "arch/arm/plat-s5p/Kconfig"
 818 source "arch/arm/plat-s5pc1xx/Kconfig"
 819
 820 if ARCH_S3C2410
 821 source "arch/arm/mach-s3c2400/Kconfig"
 822 source "arch/arm/mach-s3c2410/Kconfig"
 823 source "arch/arm/mach-s3c2412/Kconfig"
 824 source "arch/arm/mach-s3c2440/Kconfig"
 825 source "arch/arm/mach-s3c2442/Kconfig"
 826 source "arch/arm/mach-s3c2443/Kconfig"
 827 endif
 828
 829 if ARCH_S3C64XX
 830 source "arch/arm/mach-s3c6400/Kconfig"
 831 source "arch/arm/mach-s3c6410/Kconfig"
 832 endif
 833
 834 source "arch/arm/mach-s5p6440/Kconfig"
 835
 836 source "arch/arm/plat-stmp3xxx/Kconfig"
 837
 838 if ARCH_S5PC1XX
 839 source "arch/arm/mach-s5pc100/Kconfig"
 840 endif
 841
 842 source "arch/arm/mach-u300/Kconfig"
 843
 844 source "arch/arm/mach-ux500/Kconfig"
 845
 846 source "arch/arm/mach-versatile/Kconfig"
 847
 848 source "arch/arm/mach-w90x900/Kconfig"
 849
 850 # Definitions to make life easier
 851 config ARCH_ACORN
 852         bool
 853
 854 config PLAT_IOP
 855         bool
 856         select GENERIC_CLOCKEVENTS
 857         select GENERIC_TIME
 858
 859 config PLAT_ORION
 860         bool
 861
 862 config PLAT_PXA
 863         bool
 864
 865 source arch/arm/mm/Kconfig
 866
 867 config IWMMXT
 868         bool "Enable iWMMXt support"
 869         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 870         default y if PXA27x || PXA3xx || ARCH_MMP
 871         help
 872           Enable support for iWMMXt context switching at run time if
 873           running on a CPU that supports it.
 874
 875 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 876 config XSCALE_PMU
 877         bool
 878         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 879         default y
 880
 881 if !MMU
 882 source "arch/arm/Kconfig-nommu"
 883 endif
 884
 885 config ARM_ERRATA_411920
 886         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 887         depends on CPU_V6 && !SMP
 888         help
 889           Invalidation of the Instruction Cache operation can
 890           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 891           It does not affect the MPCore. This option enables the ARM Ltd.
 892           recommended workaround.
 893
 894 config ARM_ERRATA_430973
 895         bool "ARM errata: Stale prediction on replaced interworking branch"
 896         depends on CPU_V7
 897         help
 898           This option enables the workaround for the 430973 Cortex-A8
 899           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 900           interworking branch is replaced with another code sequence at the
 901           same virtual address, whether due to self-modifying code or virtual
 902           to physical address re-mapping, Cortex-A8 does not recover from the
 903           stale interworking branch prediction. This results in Cortex-A8
 904           executing the new code sequence in the incorrect ARM or Thumb state.
 905           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 906           and also flushes the branch target cache at every context switch.
 907           Note that setting specific bits in the ACTLR register may not be
 908           available in non-secure mode.
 909
 910 config ARM_ERRATA_458693
 911         bool "ARM errata: Processor deadlock when a false hazard is created"
 912         depends on CPU_V7
 913         help
 914           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 915           erratum. For very specific sequences of memory operations, it is
 916           possible for a hazard condition intended for a cache line to instead
 917           be incorrectly associated with a different cache line. This false
 918           hazard might then cause a processor deadlock. The workaround enables
 919           the L1 caching of the NEON accesses and disables the PLD instruction
 920           in the ACTLR register. Note that setting specific bits in the ACTLR
 921           register may not be available in non-secure mode.
 922
 923 config ARM_ERRATA_460075
 924         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
 925         depends on CPU_V7
 926         help
 927           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
 928           erratum. Any asynchronous access to the L2 cache may encounter a
 929           situation in which recent store transactions to the L2 cache are lost
 930           and overwritten with stale memory contents from external memory. The
 931           workaround disables the write-allocate mode for the L2 cache via the
 932           ACTLR register. Note that setting specific bits in the ACTLR register
 933           may not be available in non-secure mode.
 934
 935 endmenu
 936
 937 source "arch/arm/common/Kconfig"
 938
 939 config FORCE_MAX_ZONEORDER
 940         int
 941         depends on SA1111
 942         default "9"
 943
 944 menu "Bus support"
 945
 946 config ARM_AMBA
 947         bool
 948
 949 config ISA
 950         bool
 951         help
 952           Find out whether you have ISA slots on your motherboard.  ISA is the
 953           name of a bus system, i.e. the way the CPU talks to the other stuff
 954           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 955           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 956           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 957
 958 # Select ISA DMA controller support
 959 config ISA_DMA
 960         bool
 961         select ISA_DMA_API
 962
 963 # Select ISA DMA interface
 964 config ISA_DMA_API
 965         bool
 966
 967 config PCI
 968         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 969         help
 970           Find out whether you have a PCI motherboard. PCI is the name of a
 971           bus system, i.e. the way the CPU talks to the other stuff inside
 972           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 973           VESA. If you have PCI, say Y, otherwise N.
 974
 975 config PCI_SYSCALL
 976         def_bool PCI
 977
 978 # Select the host bridge type
 979 config PCI_HOST_VIA82C505
 980         bool
 981         depends on PCI && ARCH_SHARK
 982         default y
 983
 984 config PCI_HOST_ITE8152
 985         bool
 986         depends on PCI && MACH_ARMCORE
 987         default y
 988         select DMABOUNCE
 989
 990 source "drivers/pci/Kconfig"
 991
 992 source "drivers/pcmcia/Kconfig"
 993
 994 endmenu
 995
 996 menu "Kernel Features"
 997
 998 source "kernel/time/Kconfig"
 999
1000 config SMP
1001         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1002         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1003                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1004         depends on GENERIC_CLOCKEVENTS
1005         select USE_GENERIC_SMP_HELPERS
1006         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1007         help
1008           This enables support for systems with more than one CPU. If you have
1009           a system with only one CPU, like most personal computers, say N. If
1010           you have a system with more than one CPU, say Y.
1011
1012           If you say N here, the kernel will run on single and multiprocessor
1013           machines, but will use only one CPU of a multiprocessor machine. If
1014           you say Y here, the kernel will run on many, but not all, single
1015           processor machines. On a single processor machine, the kernel will
1016           run faster if you say N here.
1017
1018           See also <file:Documentation/i386/IO-APIC.txt>,
1019           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1020           <http://www.linuxdoc.org/docs.html#howto>.
1021
1022           If you don't know what to do here, say N.
1023
1024 config HAVE_ARM_SCU
1025         bool
1026         depends on SMP
1027         help
1028           This option enables support for the ARM system coherency unit
1029
1030 config HAVE_ARM_TWD
1031         bool
1032         depends on SMP
1033         help
1034           This options enables support for the ARM timer and watchdog unit
1035
1036 choice
1037         prompt "Memory split"
1038         default VMSPLIT_3G
1039         help
1040           Select the desired split between kernel and user memory.
1041
1042           If you are not absolutely sure what you are doing, leave this
1043           option alone!
1044
1045         config VMSPLIT_3G
1046                 bool "3G/1G user/kernel split"
1047         config VMSPLIT_2G
1048                 bool "2G/2G user/kernel split"
1049         config VMSPLIT_1G
1050                 bool "1G/3G user/kernel split"
1051 endchoice
1052
1053 config PAGE_OFFSET
1054         hex
1055         default 0x40000000 if VMSPLIT_1G
1056         default 0x80000000 if VMSPLIT_2G
1057         default 0xC0000000
1058
1059 config NR_CPUS
1060         int "Maximum number of CPUs (2-32)"
1061         range 2 32
1062         depends on SMP
1063         default "4"
1064
1065 config HOTPLUG_CPU
1066         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1067         depends on SMP && HOTPLUG && EXPERIMENTAL
1068         help
1069           Say Y here to experiment with turning CPUs off and on.  CPUs
1070           can be controlled through /sys/devices/system/cpu.
1071
1072 config LOCAL_TIMERS
1073         bool "Use local timer interrupts"
1074         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1075                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1076         default y
1077         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1078         help
1079           Enable support for local timers on SMP platforms, rather then the
1080           legacy IPI broadcast method.  Local timers allows the system
1081           accounting to be spread across the timer interval, preventing a
1082           "thundering herd" at every timer tick.
1083
1084 source kernel/Kconfig.preempt
1085
1086 config HZ
1087         int
1088         default 128 if ARCH_L7200
1089         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440
1090         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1091         default AT91_TIMER_HZ if ARCH_AT91
1092         default 100
1093
1094 config THUMB2_KERNEL
1095         bool "Compile the kernel in Thumb-2 mode"
1096         depends on CPU_V7 && EXPERIMENTAL
1097         select AEABI
1098         select ARM_ASM_UNIFIED
1099         help
1100           By enabling this option, the kernel will be compiled in
1101           Thumb-2 mode. A compiler/assembler that understand the unified
1102           ARM-Thumb syntax is needed.
1103
1104           If unsure, say N.
1105
1106 config ARM_ASM_UNIFIED
1107         bool
1108
1109 config AEABI
1110         bool "Use the ARM EABI to compile the kernel"
1111         help
1112           This option allows for the kernel to be compiled using the latest
1113           ARM ABI (aka EABI).  This is only useful if you are using a user
1114           space environment that is also compiled with EABI.
1115
1116           Since there are major incompatibilities between the legacy ABI and
1117           EABI, especially with regard to structure member alignment, this
1118           option also changes the kernel syscall calling convention to
1119           disambiguate both ABIs and allow for backward compatibility support
1120           (selected with CONFIG_OABI_COMPAT).
1121
1122           To use this you need GCC version 4.0.0 or later.
1123
1124 config OABI_COMPAT
1125         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1126         depends on AEABI && EXPERIMENTAL
1127         default y
1128         help
1129           This option preserves the old syscall interface along with the
1130           new (ARM EABI) one. It also provides a compatibility layer to
1131           intercept syscalls that have structure arguments which layout
1132           in memory differs between the legacy ABI and the new ARM EABI
1133           (only for non "thumb" binaries). This option adds a tiny
1134           overhead to all syscalls and produces a slightly larger kernel.
1135           If you know you'll be using only pure EABI user space then you
1136           can say N here. If this option is not selected and you attempt
1137           to execute a legacy ABI binary then the result will be
1138           UNPREDICTABLE (in fact it can be predicted that it won't work
1139           at all). If in doubt say Y.
1140
1141 config ARCH_HAS_HOLES_MEMORYMODEL
1142         bool
1143
1144 # Discontigmem is deprecated
1145 config ARCH_DISCONTIGMEM_ENABLE
1146         bool
1147
1148 config ARCH_SPARSEMEM_ENABLE
1149         bool
1150
1151 config ARCH_SPARSEMEM_DEFAULT
1152         def_bool ARCH_SPARSEMEM_ENABLE
1153
1154 config ARCH_SELECT_MEMORY_MODEL
1155         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1156
1157 config NODES_SHIFT
1158         int
1159         default "4" if ARCH_LH7A40X
1160         default "2"
1161         depends on NEED_MULTIPLE_NODES
1162
1163 config HIGHMEM
1164         bool "High Memory Support (EXPERIMENTAL)"
1165         depends on MMU && EXPERIMENTAL
1166         help
1167           The address space of ARM processors is only 4 Gigabytes large
1168           and it has to accommodate user address space, kernel address
1169           space as well as some memory mapped IO. That means that, if you
1170           have a large amount of physical memory and/or IO, not all of the
1171           memory can be "permanently mapped" by the kernel. The physical
1172           memory that is not permanently mapped is called "high memory".
1173
1174           Depending on the selected kernel/user memory split, minimum
1175           vmalloc space and actual amount of RAM, you may not need this
1176           option which should result in a slightly faster kernel.
1177
1178           If unsure, say n.
1179
1180 config HIGHPTE
1181         bool "Allocate 2nd-level pagetables from highmem"
1182         depends on HIGHMEM
1183         depends on !OUTER_CACHE
1184
1185 source "mm/Kconfig"
1186
1187 config LEDS
1188         bool "Timer and CPU usage LEDs"
1189         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1190                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1191                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1192                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1193                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1194                    ARCH_AT91 || ARCH_DAVINCI || \
1195                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1196         help
1197           If you say Y here, the LEDs on your machine will be used
1198           to provide useful information about your current system status.
1199
1200           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1201           be able to select which LEDs are active using the options below. If
1202           you are compiling a kernel for the EBSA-110 or the LART however, the
1203           red LED will simply flash regularly to indicate that the system is
1204           still functional. It is safe to say Y here if you have a CATS
1205           system, but the driver will do nothing.
1206
1207 config LEDS_TIMER
1208         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1209                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1210                             || MACH_OMAP_PERSEUS2
1211         depends on LEDS
1212         depends on !GENERIC_CLOCKEVENTS
1213         default y if ARCH_EBSA110
1214         help
1215           If you say Y here, one of the system LEDs (the green one on the
1216           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1217           will flash regularly to indicate that the system is still
1218           operational. This is mainly useful to kernel hackers who are
1219           debugging unstable kernels.
1220
1221           The LART uses the same LED for both Timer LED and CPU usage LED
1222           functions. You may choose to use both, but the Timer LED function
1223           will overrule the CPU usage LED.
1224
1225 config LEDS_CPU
1226         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1227                         !ARCH_OMAP) \
1228                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1229                         || MACH_OMAP_PERSEUS2
1230         depends on LEDS
1231         help
1232           If you say Y here, the red LED will be used to give a good real
1233           time indication of CPU usage, by lighting whenever the idle task
1234           is not currently executing.
1235
1236           The LART uses the same LED for both Timer LED and CPU usage LED
1237           functions. You may choose to use both, but the Timer LED function
1238           will overrule the CPU usage LED.
1239
1240 config ALIGNMENT_TRAP
1241         bool
1242         depends on CPU_CP15_MMU
1243         default y if !ARCH_EBSA110
1244         help
1245           ARM processors cannot fetch/store information which is not
1246           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1247           address divisible by 4. On 32-bit ARM processors, these non-aligned
1248           fetch/store instructions will be emulated in software if you say
1249           here, which has a severe performance impact. This is necessary for
1250           correct operation of some network protocols. With an IP-only
1251           configuration it is safe to say N, otherwise say Y.
1252
1253 config UACCESS_WITH_MEMCPY
1254         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1255         depends on MMU && EXPERIMENTAL
1256         default y if CPU_FEROCEON
1257         help
1258           Implement faster copy_to_user and clear_user methods for CPU
1259           cores where a 8-word STM instruction give significantly higher
1260           memory write throughput than a sequence of individual 32bit stores.
1261
1262           A possible side effect is a slight increase in scheduling latency
1263           between threads sharing the same address space if they invoke
1264           such copy operations with large buffers.
1265
1266           However, if the CPU data cache is using a write-allocate mode,
1267           this option is unlikely to provide any performance gain.
1268
1269 endmenu
1270
1271 menu "Boot options"
1272
1273 # Compressed boot loader in ROM.  Yes, we really want to ask about
1274 # TEXT and BSS so we preserve their values in the config files.
1275 config ZBOOT_ROM_TEXT
1276         hex "Compressed ROM boot loader base address"
1277         default "0"
1278         help
1279           The physical address at which the ROM-able zImage is to be
1280           placed in the target.  Platforms which normally make use of
1281           ROM-able zImage formats normally set this to a suitable
1282           value in their defconfig file.
1283
1284           If ZBOOT_ROM is not enabled, this has no effect.
1285
1286 config ZBOOT_ROM_BSS
1287         hex "Compressed ROM boot loader BSS address"
1288         default "0"
1289         help
1290           The base address of an area of read/write memory in the target
1291           for the ROM-able zImage which must be available while the
1292           decompressor is running. It must be large enough to hold the
1293           entire decompressed kernel plus an additional 128 KiB.
1294           Platforms which normally make use of ROM-able zImage formats
1295           normally set this to a suitable value in their defconfig file.
1296
1297           If ZBOOT_ROM is not enabled, this has no effect.
1298
1299 config ZBOOT_ROM
1300         bool "Compressed boot loader in ROM/flash"
1301         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1302         help
1303           Say Y here if you intend to execute your compressed kernel image
1304           (zImage) directly from ROM or flash.  If unsure, say N.
1305
1306 config CMDLINE
1307         string "Default kernel command string"
1308         default ""
1309         help
1310           On some architectures (EBSA110 and CATS), there is currently no way
1311           for the boot loader to pass arguments to the kernel. For these
1312           architectures, you should supply some command-line options at build
1313           time by entering them here. As a minimum, you should specify the
1314           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1315
1316 config XIP_KERNEL
1317         bool "Kernel Execute-In-Place from ROM"
1318         depends on !ZBOOT_ROM
1319         help
1320           Execute-In-Place allows the kernel to run from non-volatile storage
1321           directly addressable by the CPU, such as NOR flash. This saves RAM
1322           space since the text section of the kernel is not loaded from flash
1323           to RAM.  Read-write sections, such as the data section and stack,
1324           are still copied to RAM.  The XIP kernel is not compressed since
1325           it has to run directly from flash, so it will take more space to
1326           store it.  The flash address used to link the kernel object files,
1327           and for storing it, is configuration dependent. Therefore, if you
1328           say Y here, you must know the proper physical address where to
1329           store the kernel image depending on your own flash memory usage.
1330
1331           Also note that the make target becomes "make xipImage" rather than
1332           "make zImage" or "make Image".  The final kernel binary to put in
1333           ROM memory will be arch/arm/boot/xipImage.
1334
1335           If unsure, say N.
1336
1337 config XIP_PHYS_ADDR
1338         hex "XIP Kernel Physical Location"
1339         depends on XIP_KERNEL
1340         default "0x00080000"
1341         help
1342           This is the physical address in your flash memory the kernel will
1343           be linked for and stored to.  This address is dependent on your
1344           own flash usage.
1345
1346 config KEXEC
1347         bool "Kexec system call (EXPERIMENTAL)"
1348         depends on EXPERIMENTAL
1349         help
1350           kexec is a system call that implements the ability to shutdown your
1351           current kernel, and to start another kernel.  It is like a reboot
1352           but it is independent of the system firmware.   And like a reboot
1353           you can start any kernel with it, not just Linux.
1354
1355           It is an ongoing process to be certain the hardware in a machine
1356           is properly shutdown, so do not be surprised if this code does not
1357           initially work for you.  It may help to enable device hotplugging
1358           support.
1359
1360 config ATAGS_PROC
1361         bool "Export atags in procfs"
1362         depends on KEXEC
1363         default y
1364         help
1365           Should the atags used to boot the kernel be exported in an "atags"
1366           file in procfs. Useful with kexec.
1367
1368 endmenu
1369
1370 menu "CPU Power Management"
1371
1372 if ARCH_HAS_CPUFREQ
1373
1374 source "drivers/cpufreq/Kconfig"
1375
1376 config CPU_FREQ_SA1100
1377         bool
1378
1379 config CPU_FREQ_SA1110
1380         bool
1381
1382 config CPU_FREQ_INTEGRATOR
1383         tristate "CPUfreq driver for ARM Integrator CPUs"
1384         depends on ARCH_INTEGRATOR && CPU_FREQ
1385         default y
1386         help
1387           This enables the CPUfreq driver for ARM Integrator CPUs.
1388
1389           For details, take a look at <file:Documentation/cpu-freq>.
1390
1391           If in doubt, say Y.
1392
1393 config CPU_FREQ_PXA
1394         bool
1395         depends on CPU_FREQ && ARCH_PXA && PXA25x
1396         default y
1397         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1398
1399 config CPU_FREQ_S3C64XX
1400         bool "CPUfreq support for Samsung S3C64XX CPUs"
1401         depends on CPU_FREQ && CPU_S3C6410
1402
1403 config CPU_FREQ_S3C
1404         bool
1405         help
1406           Internal configuration node for common cpufreq on Samsung SoC
1407
1408 config CPU_FREQ_S3C24XX
1409         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1410         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1411         select CPU_FREQ_S3C
1412         help
1413           This enables the CPUfreq driver for the Samsung S3C24XX family
1414           of CPUs.
1415
1416           For details, take a look at <file:Documentation/cpu-freq>.
1417
1418           If in doubt, say N.
1419
1420 config CPU_FREQ_S3C24XX_PLL
1421         bool "Support CPUfreq changing of PLL frequency"
1422         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1423         help
1424           Compile in support for changing the PLL frequency from the
1425           S3C24XX series CPUfreq driver. The PLL takes time to settle
1426           after a frequency change, so by default it is not enabled.
1427
1428           This also means that the PLL tables for the selected CPU(s) will
1429           be built which may increase the size of the kernel image.
1430
1431 config CPU_FREQ_S3C24XX_DEBUG
1432         bool "Debug CPUfreq Samsung driver core"
1433         depends on CPU_FREQ_S3C24XX
1434         help
1435           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1436
1437 config CPU_FREQ_S3C24XX_IODEBUG
1438         bool "Debug CPUfreq Samsung driver IO timing"
1439         depends on CPU_FREQ_S3C24XX
1440         help
1441           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1442
1443 config CPU_FREQ_S3C24XX_DEBUGFS
1444         bool "Export debugfs for CPUFreq"
1445         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1446         help
1447           Export status information via debugfs.
1448
1449 endif
1450
1451 source "drivers/cpuidle/Kconfig"
1452
1453 endmenu
1454
1455 menu "Floating point emulation"
1456
1457 comment "At least one emulation must be selected"
1458
1459 config FPE_NWFPE
1460         bool "NWFPE math emulation"
1461         depends on !AEABI || OABI_COMPAT
1462         ---help---
1463           Say Y to include the NWFPE floating point emulator in the kernel.
1464           This is necessary to run most binaries. Linux does not currently
1465           support floating point hardware so you need to say Y here even if
1466           your machine has an FPA or floating point co-processor podule.
1467
1468           You may say N here if you are going to load the Acorn FPEmulator
1469           early in the bootup.
1470
1471 config FPE_NWFPE_XP
1472         bool "Support extended precision"
1473         depends on FPE_NWFPE
1474         help
1475           Say Y to include 80-bit support in the kernel floating-point
1476           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1477           Note that gcc does not generate 80-bit operations by default,
1478           so in most cases this option only enlarges the size of the
1479           floating point emulator without any good reason.
1480
1481           You almost surely want to say N here.
1482
1483 config FPE_FASTFPE
1484         bool "FastFPE math emulation (EXPERIMENTAL)"
1485         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1486         ---help---
1487           Say Y here to include the FAST floating point emulator in the kernel.
1488           This is an experimental much faster emulator which now also has full
1489           precision for the mantissa.  It does not support any exceptions.
1490           It is very simple, and approximately 3-6 times faster than NWFPE.
1491
1492           It should be sufficient for most programs.  It may be not suitable
1493           for scientific calculations, but you have to check this for yourself.
1494           If you do not feel you need a faster FP emulation you should better
1495           choose NWFPE.
1496
1497 config VFP
1498         bool "VFP-format floating point maths"
1499         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1500         help
1501           Say Y to include VFP support code in the kernel. This is needed
1502           if your hardware includes a VFP unit.
1503
1504           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1505           release notes and additional status information.
1506
1507           Say N if your target does not have VFP hardware.
1508
1509 config VFPv3
1510         bool
1511         depends on VFP
1512         default y if CPU_V7
1513
1514 config NEON
1515         bool "Advanced SIMD (NEON) Extension support"
1516         depends on VFPv3 && CPU_V7
1517         help
1518           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1519           Extension.
1520
1521 endmenu
1522
1523 menu "Userspace binary formats"
1524
1525 source "fs/Kconfig.binfmt"
1526
1527 config ARTHUR
1528         tristate "RISC OS personality"
1529         depends on !AEABI
1530         help
1531           Say Y here to include the kernel code necessary if you want to run
1532           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1533           experimental; if this sounds frightening, say N and sleep in peace.
1534           You can also say M here to compile this support as a module (which
1535           will be called arthur).
1536
1537 endmenu
1538
1539 menu "Power management options"
1540
1541 source "kernel/power/Kconfig"
1542
1543 config ARCH_SUSPEND_POSSIBLE
1544         def_bool y
1545
1546 endmenu
1547
1548 source "net/Kconfig"
1549
1550 source "drivers/Kconfig"
1551
1552 source "fs/Kconfig"
1553
1554 source "arch/arm/Kconfig.debug"
1555
1556 source "security/Kconfig"
1557
1558 source "crypto/Kconfig"
1559
1560 source "lib/Kconfig"