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 GENERIC_ATOMIC64 if (!CPU_32v6K)
  16         select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  17         select HAVE_ARCH_KGDB
  18         select HAVE_KPROBES if (!XIP_KERNEL)
  19         select HAVE_KRETPROBES if (HAVE_KPROBES)
  20         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  21         select HAVE_GENERIC_DMA_COHERENT
  22         select HAVE_KERNEL_GZIP
  23         select HAVE_KERNEL_LZO
  24         select HAVE_KERNEL_LZMA
  25         select HAVE_PERF_EVENTS
  26         select PERF_USE_VMALLOC
  27         select HAVE_REGS_AND_STACK_ACCESS_API
  28         help
  29           The ARM series is a line of low-power-consumption RISC chip designs
  30           licensed by ARM Ltd and targeted at embedded applications and
  31           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  32           manufactured, but legacy ARM-based PC hardware remains popular in
  33           Europe.  There is an ARM Linux project with a web page at
  34           <http://www.arm.linux.org.uk/>.
  35
  36 config HAVE_PWM
  37         bool
  38
  39 config SYS_SUPPORTS_APM_EMULATION
  40         bool
  41
  42 config GENERIC_GPIO
  43         bool
  44
  45 config GENERIC_TIME
  46         bool
  47         default y
  48
  49 config ARCH_USES_GETTIMEOFFSET
  50         bool
  51         default n
  52
  53 config GENERIC_CLOCKEVENTS
  54         bool
  55
  56 config GENERIC_CLOCKEVENTS_BROADCAST
  57         bool
  58         depends on GENERIC_CLOCKEVENTS
  59         default y if SMP && !LOCAL_TIMERS
  60
  61 config HAVE_TCM
  62         bool
  63         select GENERIC_ALLOCATOR
  64
  65 config HAVE_PROC_CPU
  66         bool
  67
  68 config NO_IOPORT
  69         bool
  70
  71 config EISA
  72         bool
  73         ---help---
  74           The Extended Industry Standard Architecture (EISA) bus was
  75           developed as an open alternative to the IBM MicroChannel bus.
  76
  77           The EISA bus provided some of the features of the IBM MicroChannel
  78           bus while maintaining backward compatibility with cards made for
  79           the older ISA bus.  The EISA bus saw limited use between 1988 and
  80           1995 when it was made obsolete by the PCI bus.
  81
  82           Say Y here if you are building a kernel for an EISA-based machine.
  83
  84           Otherwise, say N.
  85
  86 config SBUS
  87         bool
  88
  89 config MCA
  90         bool
  91         help
  92           MicroChannel Architecture is found in some IBM PS/2 machines and
  93           laptops.  It is a bus system similar to PCI or ISA. See
  94           <file:Documentation/mca.txt> (and especially the web page given
  95           there) before attempting to build an MCA bus kernel.
  96
  97 config GENERIC_HARDIRQS
  98         bool
  99         default y
 100
 101 config STACKTRACE_SUPPORT
 102         bool
 103         default y
 104
 105 config HAVE_LATENCYTOP_SUPPORT
 106         bool
 107         depends on !SMP
 108         default y
 109
 110 config LOCKDEP_SUPPORT
 111         bool
 112         default y
 113
 114 config TRACE_IRQFLAGS_SUPPORT
 115         bool
 116         default y
 117
 118 config HARDIRQS_SW_RESEND
 119         bool
 120         default y
 121
 122 config GENERIC_IRQ_PROBE
 123         bool
 124         default y
 125
 126 config GENERIC_LOCKBREAK
 127         bool
 128         default y
 129         depends on SMP && PREEMPT
 130
 131 config RWSEM_GENERIC_SPINLOCK
 132         bool
 133         default y
 134
 135 config RWSEM_XCHGADD_ALGORITHM
 136         bool
 137
 138 config ARCH_HAS_ILOG2_U32
 139         bool
 140
 141 config ARCH_HAS_ILOG2_U64
 142         bool
 143
 144 config ARCH_HAS_CPUFREQ
 145         bool
 146         help
 147           Internal node to signify that the ARCH has CPUFREQ support
 148           and that the relevant menu configurations are displayed for
 149           it.
 150
 151 config GENERIC_HWEIGHT
 152         bool
 153         default y
 154
 155 config GENERIC_CALIBRATE_DELAY
 156         bool
 157         default y
 158
 159 config ARCH_MAY_HAVE_PC_FDC
 160         bool
 161
 162 config ZONE_DMA
 163         bool
 164
 165 config NEED_DMA_MAP_STATE
 166        def_bool y
 167
 168 config GENERIC_ISA_DMA
 169         bool
 170
 171 config FIQ
 172         bool
 173
 174 config ARCH_MTD_XIP
 175         bool
 176
 177 config GENERIC_HARDIRQS_NO__DO_IRQ
 178         def_bool y
 179
 180 config ARM_L1_CACHE_SHIFT_6
 181         bool
 182         help
 183           Setting ARM L1 cache line size to 64 Bytes.
 184
 185 config VECTORS_BASE
 186         hex
 187         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 188         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 189         default 0x00000000
 190         help
 191           The base address of exception vectors.
 192
 193 source "init/Kconfig"
 194
 195 source "kernel/Kconfig.freezer"
 196
 197 menu "System Type"
 198
 199 config MMU
 200         bool "MMU-based Paged Memory Management Support"
 201         default y
 202         help
 203           Select if you want MMU-based virtualised addressing space
 204           support by paged memory management. If unsure, say 'Y'.
 205
 206 #
 207 # The "ARM system type" choice list is ordered alphabetically by option
 208 # text.  Please add new entries in the option alphabetic order.
 209 #
 210 choice
 211         prompt "ARM system type"
 212         default ARCH_VERSATILE
 213
 214 config ARCH_AAEC2000
 215         bool "Agilent AAEC-2000 based"
 216         select CPU_ARM920T
 217         select ARM_AMBA
 218         select HAVE_CLK
 219         select ARCH_USES_GETTIMEOFFSET
 220         help
 221           This enables support for systems based on the Agilent AAEC-2000
 222
 223 config ARCH_INTEGRATOR
 224         bool "ARM Ltd. Integrator family"
 225         select ARM_AMBA
 226         select ARCH_HAS_CPUFREQ
 227         select COMMON_CLKDEV
 228         select ICST
 229         select GENERIC_CLOCKEVENTS
 230         select PLAT_VERSATILE
 231         help
 232           Support for ARM's Integrator platform.
 233
 234 config ARCH_REALVIEW
 235         bool "ARM Ltd. RealView family"
 236         select ARM_AMBA
 237         select COMMON_CLKDEV
 238         select ICST
 239         select GENERIC_CLOCKEVENTS
 240         select ARCH_WANT_OPTIONAL_GPIOLIB
 241         select PLAT_VERSATILE
 242         select ARM_TIMER_SP804
 243         select GPIO_PL061 if GPIOLIB
 244         help
 245           This enables support for ARM Ltd RealView boards.
 246
 247 config ARCH_VERSATILE
 248         bool "ARM Ltd. Versatile family"
 249         select ARM_AMBA
 250         select ARM_VIC
 251         select COMMON_CLKDEV
 252         select ICST
 253         select GENERIC_CLOCKEVENTS
 254         select ARCH_WANT_OPTIONAL_GPIOLIB
 255         select PLAT_VERSATILE
 256         select ARM_TIMER_SP804
 257         help
 258           This enables support for ARM Ltd Versatile board.
 259
 260 config ARCH_VEXPRESS
 261         bool "ARM Ltd. Versatile Express family"
 262         select ARCH_WANT_OPTIONAL_GPIOLIB
 263         select ARM_AMBA
 264         select ARM_TIMER_SP804
 265         select COMMON_CLKDEV
 266         select GENERIC_CLOCKEVENTS
 267         select HAVE_CLK
 268         select ICST
 269         select PLAT_VERSATILE
 270         help
 271           This enables support for the ARM Ltd Versatile Express boards.
 272
 273 config ARCH_AT91
 274         bool "Atmel AT91"
 275         select ARCH_REQUIRE_GPIOLIB
 276         select HAVE_CLK
 277         select ARCH_USES_GETTIMEOFFSET
 278         help
 279           This enables support for systems based on the Atmel AT91RM9200,
 280           AT91SAM9 and AT91CAP9 processors.
 281
 282 config ARCH_BCMRING
 283         bool "Broadcom BCMRING"
 284         depends on MMU
 285         select CPU_V6
 286         select ARM_AMBA
 287         select COMMON_CLKDEV
 288         select GENERIC_CLOCKEVENTS
 289         select ARCH_WANT_OPTIONAL_GPIOLIB
 290         help
 291           Support for Broadcom's BCMRing platform.
 292
 293 config ARCH_CLPS711X
 294         bool "Cirrus Logic CLPS711x/EP721x-based"
 295         select CPU_ARM720T
 296         select ARCH_USES_GETTIMEOFFSET
 297         help
 298           Support for Cirrus Logic 711x/721x based boards.
 299
 300 config ARCH_CNS3XXX
 301         bool "Cavium Networks CNS3XXX family"
 302         select CPU_V6
 303         select GENERIC_CLOCKEVENTS
 304         select ARM_GIC
 305         help
 306           Support for Cavium Networks CNS3XXX platform.
 307
 308 config ARCH_GEMINI
 309         bool "Cortina Systems Gemini"
 310         select CPU_FA526
 311         select ARCH_REQUIRE_GPIOLIB
 312         select ARCH_USES_GETTIMEOFFSET
 313         help
 314           Support for the Cortina Systems Gemini family SoCs
 315
 316 config ARCH_EBSA110
 317         bool "EBSA-110"
 318         select CPU_SA110
 319         select ISA
 320         select NO_IOPORT
 321         select ARCH_USES_GETTIMEOFFSET
 322         help
 323           This is an evaluation board for the StrongARM processor available
 324           from Digital. It has limited hardware on-board, including an
 325           Ethernet interface, two PCMCIA sockets, two serial ports and a
 326           parallel port.
 327
 328 config ARCH_EP93XX
 329         bool "EP93xx-based"
 330         select CPU_ARM920T
 331         select ARM_AMBA
 332         select ARM_VIC
 333         select COMMON_CLKDEV
 334         select ARCH_REQUIRE_GPIOLIB
 335         select ARCH_HAS_HOLES_MEMORYMODEL
 336         select ARCH_USES_GETTIMEOFFSET
 337         help
 338           This enables support for the Cirrus EP93xx series of CPUs.
 339
 340 config ARCH_FOOTBRIDGE
 341         bool "FootBridge"
 342         select CPU_SA110
 343         select FOOTBRIDGE
 344         select ARCH_USES_GETTIMEOFFSET
 345         help
 346           Support for systems based on the DC21285 companion chip
 347           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 348
 349 config ARCH_MXC
 350         bool "Freescale MXC/iMX-based"
 351         select GENERIC_CLOCKEVENTS
 352         select ARCH_REQUIRE_GPIOLIB
 353         select COMMON_CLKDEV
 354         help
 355           Support for Freescale MXC/iMX-based family of processors
 356
 357 config ARCH_STMP3XXX
 358         bool "Freescale STMP3xxx"
 359         select CPU_ARM926T
 360         select COMMON_CLKDEV
 361         select ARCH_REQUIRE_GPIOLIB
 362         select GENERIC_CLOCKEVENTS
 363         select USB_ARCH_HAS_EHCI
 364         help
 365           Support for systems based on the Freescale 3xxx CPUs.
 366
 367 config ARCH_NETX
 368         bool "Hilscher NetX based"
 369         select CPU_ARM926T
 370         select ARM_VIC
 371         select GENERIC_CLOCKEVENTS
 372         help
 373           This enables support for systems based on the Hilscher NetX Soc
 374
 375 config ARCH_H720X
 376         bool "Hynix HMS720x-based"
 377         select CPU_ARM720T
 378         select ISA_DMA_API
 379         select ARCH_USES_GETTIMEOFFSET
 380         help
 381           This enables support for systems based on the Hynix HMS720x
 382
 383 config ARCH_IOP13XX
 384         bool "IOP13xx-based"
 385         depends on MMU
 386         select CPU_XSC3
 387         select PLAT_IOP
 388         select PCI
 389         select ARCH_SUPPORTS_MSI
 390         select VMSPLIT_1G
 391         help
 392           Support for Intel's IOP13XX (XScale) family of processors.
 393
 394 config ARCH_IOP32X
 395         bool "IOP32x-based"
 396         depends on MMU
 397         select CPU_XSCALE
 398         select PLAT_IOP
 399         select PCI
 400         select ARCH_REQUIRE_GPIOLIB
 401         help
 402           Support for Intel's 80219 and IOP32X (XScale) family of
 403           processors.
 404
 405 config ARCH_IOP33X
 406         bool "IOP33x-based"
 407         depends on MMU
 408         select CPU_XSCALE
 409         select PLAT_IOP
 410         select PCI
 411         select ARCH_REQUIRE_GPIOLIB
 412         help
 413           Support for Intel's IOP33X (XScale) family of processors.
 414
 415 config ARCH_IXP23XX
 416         bool "IXP23XX-based"
 417         depends on MMU
 418         select CPU_XSC3
 419         select PCI
 420         select ARCH_USES_GETTIMEOFFSET
 421         help
 422           Support for Intel's IXP23xx (XScale) family of processors.
 423
 424 config ARCH_IXP2000
 425         bool "IXP2400/2800-based"
 426         depends on MMU
 427         select CPU_XSCALE
 428         select PCI
 429         select ARCH_USES_GETTIMEOFFSET
 430         help
 431           Support for Intel's IXP2400/2800 (XScale) family of processors.
 432
 433 config ARCH_IXP4XX
 434         bool "IXP4xx-based"
 435         depends on MMU
 436         select CPU_XSCALE
 437         select GENERIC_GPIO
 438         select GENERIC_CLOCKEVENTS
 439         select DMABOUNCE if PCI
 440         help
 441           Support for Intel's IXP4XX (XScale) family of processors.
 442
 443 config ARCH_L7200
 444         bool "LinkUp-L7200"
 445         select CPU_ARM720T
 446         select FIQ
 447         select ARCH_USES_GETTIMEOFFSET
 448         help
 449           Say Y here if you intend to run this kernel on a LinkUp Systems
 450           L7200 Software Development Board which uses an ARM720T processor.
 451           Information on this board can be obtained at:
 452
 453           <http://www.linkupsys.com/>
 454
 455           If you have any questions or comments about the Linux kernel port
 456           to this board, send e-mail to <sjhill@cotw.com>.
 457
 458 config ARCH_DOVE
 459         bool "Marvell Dove"
 460         select PCI
 461         select ARCH_REQUIRE_GPIOLIB
 462         select GENERIC_CLOCKEVENTS
 463         select PLAT_ORION
 464         help
 465           Support for the Marvell Dove SoC 88AP510
 466
 467 config ARCH_KIRKWOOD
 468         bool "Marvell Kirkwood"
 469         select CPU_FEROCEON
 470         select PCI
 471         select ARCH_REQUIRE_GPIOLIB
 472         select GENERIC_CLOCKEVENTS
 473         select PLAT_ORION
 474         help
 475           Support for the following Marvell Kirkwood series SoCs:
 476           88F6180, 88F6192 and 88F6281.
 477
 478 config ARCH_LOKI
 479         bool "Marvell Loki (88RC8480)"
 480         select CPU_FEROCEON
 481         select GENERIC_CLOCKEVENTS
 482         select PLAT_ORION
 483         help
 484           Support for the Marvell Loki (88RC8480) SoC.
 485
 486 config ARCH_MV78XX0
 487         bool "Marvell MV78xx0"
 488         select CPU_FEROCEON
 489         select PCI
 490         select ARCH_REQUIRE_GPIOLIB
 491         select GENERIC_CLOCKEVENTS
 492         select PLAT_ORION
 493         help
 494           Support for the following Marvell MV78xx0 series SoCs:
 495           MV781x0, MV782x0.
 496
 497 config ARCH_ORION5X
 498         bool "Marvell Orion"
 499         depends on MMU
 500         select CPU_FEROCEON
 501         select PCI
 502         select ARCH_REQUIRE_GPIOLIB
 503         select GENERIC_CLOCKEVENTS
 504         select PLAT_ORION
 505         help
 506           Support for the following Marvell Orion 5x series SoCs:
 507           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 508           Orion-2 (5281), Orion-1-90 (6183).
 509
 510 config ARCH_MMP
 511         bool "Marvell PXA168/910/MMP2"
 512         depends on MMU
 513         select ARCH_REQUIRE_GPIOLIB
 514         select COMMON_CLKDEV
 515         select GENERIC_CLOCKEVENTS
 516         select TICK_ONESHOT
 517         select PLAT_PXA
 518         help
 519           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 520
 521 config ARCH_KS8695
 522         bool "Micrel/Kendin KS8695"
 523         select CPU_ARM922T
 524         select ARCH_REQUIRE_GPIOLIB
 525         select ARCH_USES_GETTIMEOFFSET
 526         help
 527           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 528           System-on-Chip devices.
 529
 530 config ARCH_NS9XXX
 531         bool "NetSilicon NS9xxx"
 532         select CPU_ARM926T
 533         select GENERIC_GPIO
 534         select GENERIC_CLOCKEVENTS
 535         select HAVE_CLK
 536         help
 537           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 538           System.
 539
 540           <http://www.digi.com/products/microprocessors/index.jsp>
 541
 542 config ARCH_W90X900
 543         bool "Nuvoton W90X900 CPU"
 544         select CPU_ARM926T
 545         select ARCH_REQUIRE_GPIOLIB
 546         select COMMON_CLKDEV
 547         select GENERIC_CLOCKEVENTS
 548         help
 549           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 550           At present, the w90x900 has been renamed nuc900, regarding
 551           the ARM series product line, you can login the following
 552           link address to know more.
 553
 554           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 555                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 556
 557 config ARCH_NUC93X
 558         bool "Nuvoton NUC93X CPU"
 559         select CPU_ARM926T
 560         select COMMON_CLKDEV
 561         help
 562           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 563           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 564
 565 config ARCH_PNX4008
 566         bool "Philips Nexperia PNX4008 Mobile"
 567         select CPU_ARM926T
 568         select COMMON_CLKDEV
 569         select ARCH_USES_GETTIMEOFFSET
 570         help
 571           This enables support for Philips PNX4008 mobile platform.
 572
 573 config ARCH_PXA
 574         bool "PXA2xx/PXA3xx-based"
 575         depends on MMU
 576         select ARCH_MTD_XIP
 577         select ARCH_HAS_CPUFREQ
 578         select COMMON_CLKDEV
 579         select ARCH_REQUIRE_GPIOLIB
 580         select GENERIC_CLOCKEVENTS
 581         select TICK_ONESHOT
 582         select PLAT_PXA
 583         help
 584           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 585
 586 config ARCH_MSM
 587         bool "Qualcomm MSM"
 588         select HAVE_CLK
 589         select GENERIC_CLOCKEVENTS
 590         help
 591           Support for Qualcomm MSM/QSD based systems.  This runs on the
 592           apps processor of the MSM/QSD and depends on a shared memory
 593           interface to the modem processor which runs the baseband
 594           stack and controls some vital subsystems
 595           (clock and power control, etc).
 596
 597 config ARCH_SHMOBILE
 598         bool "Renesas SH-Mobile"
 599         help
 600           Support for Renesas's SH-Mobile ARM platforms
 601
 602 config ARCH_RPC
 603         bool "RiscPC"
 604         select ARCH_ACORN
 605         select FIQ
 606         select TIMER_ACORN
 607         select ARCH_MAY_HAVE_PC_FDC
 608         select HAVE_PATA_PLATFORM
 609         select ISA_DMA_API
 610         select NO_IOPORT
 611         select ARCH_SPARSEMEM_ENABLE
 612         select ARCH_USES_GETTIMEOFFSET
 613         help
 614           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 615           CD-ROM interface, serial and parallel port, and the floppy drive.
 616
 617 config ARCH_SA1100
 618         bool "SA1100-based"
 619         select CPU_SA1100
 620         select ISA
 621         select ARCH_SPARSEMEM_ENABLE
 622         select ARCH_MTD_XIP
 623         select ARCH_HAS_CPUFREQ
 624         select CPU_FREQ
 625         select GENERIC_CLOCKEVENTS
 626         select HAVE_CLK
 627         select TICK_ONESHOT
 628         select ARCH_REQUIRE_GPIOLIB
 629         help
 630           Support for StrongARM 11x0 based boards.
 631
 632 config ARCH_S3C2410
 633         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 634         select GENERIC_GPIO
 635         select ARCH_HAS_CPUFREQ
 636         select HAVE_CLK
 637         select ARCH_USES_GETTIMEOFFSET
 638         help
 639           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 640           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 641           the Samsung SMDK2410 development board (and derivatives).
 642
 643           Note, the S3C2416 and the S3C2450 are so close that they even share
 644           the same SoC ID code. This means that there is no seperate machine
 645           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 646
 647 config ARCH_S3C64XX
 648         bool "Samsung S3C64XX"
 649         select PLAT_SAMSUNG
 650         select CPU_V6
 651         select ARM_VIC
 652         select HAVE_CLK
 653         select NO_IOPORT
 654         select ARCH_USES_GETTIMEOFFSET
 655         select ARCH_HAS_CPUFREQ
 656         select ARCH_REQUIRE_GPIOLIB
 657         select SAMSUNG_CLKSRC
 658         select SAMSUNG_IRQ_VIC_TIMER
 659         select SAMSUNG_IRQ_UART
 660         select S3C_GPIO_TRACK
 661         select S3C_GPIO_PULL_UPDOWN
 662         select S3C_GPIO_CFG_S3C24XX
 663         select S3C_GPIO_CFG_S3C64XX
 664         select S3C_DEV_NAND
 665         select USB_ARCH_HAS_OHCI
 666         select SAMSUNG_GPIOLIB_4BIT
 667         help
 668           Samsung S3C64XX series based systems
 669
 670 config ARCH_S5P6440
 671         bool "Samsung S5P6440"
 672         select CPU_V6
 673         select GENERIC_GPIO
 674         select HAVE_CLK
 675         select ARCH_USES_GETTIMEOFFSET
 676         help
 677           Samsung S5P6440 CPU based systems
 678
 679 config ARCH_S5P6442
 680         bool "Samsung S5P6442"
 681         select CPU_V6
 682         select GENERIC_GPIO
 683         select HAVE_CLK
 684         select ARCH_USES_GETTIMEOFFSET
 685         help
 686           Samsung S5P6442 CPU based systems
 687
 688 config ARCH_S5PC100
 689         bool "Samsung S5PC100"
 690         select GENERIC_GPIO
 691         select HAVE_CLK
 692         select CPU_V7
 693         select ARM_L1_CACHE_SHIFT_6
 694         select ARCH_USES_GETTIMEOFFSET
 695         help
 696           Samsung S5PC100 series based systems
 697
 698 config ARCH_S5PV210
 699         bool "Samsung S5PV210/S5PC110"
 700         select CPU_V7
 701         select GENERIC_GPIO
 702         select HAVE_CLK
 703         select ARM_L1_CACHE_SHIFT_6
 704         select ARCH_USES_GETTIMEOFFSET
 705         help
 706           Samsung S5PV210/S5PC110 series based systems
 707
 708 config ARCH_SHARK
 709         bool "Shark"
 710         select CPU_SA110
 711         select ISA
 712         select ISA_DMA
 713         select ZONE_DMA
 714         select PCI
 715         select ARCH_USES_GETTIMEOFFSET
 716         help
 717           Support for the StrongARM based Digital DNARD machine, also known
 718           as "Shark" (<http://www.shark-linux.de/shark.html>).
 719
 720 config ARCH_LH7A40X
 721         bool "Sharp LH7A40X"
 722         select CPU_ARM922T
 723         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 724         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 725         select ARCH_USES_GETTIMEOFFSET
 726         help
 727           Say Y here for systems based on one of the Sharp LH7A40X
 728           System on a Chip processors.  These CPUs include an ARM922T
 729           core with a wide array of integrated devices for
 730           hand-held and low-power applications.
 731
 732 config ARCH_U300
 733         bool "ST-Ericsson U300 Series"
 734         depends on MMU
 735         select CPU_ARM926T
 736         select HAVE_TCM
 737         select ARM_AMBA
 738         select ARM_VIC
 739         select GENERIC_CLOCKEVENTS
 740         select COMMON_CLKDEV
 741         select GENERIC_GPIO
 742         help
 743           Support for ST-Ericsson U300 series mobile platforms.
 744
 745 config ARCH_U8500
 746         bool "ST-Ericsson U8500 Series"
 747         select CPU_V7
 748         select ARM_AMBA
 749         select GENERIC_CLOCKEVENTS
 750         select COMMON_CLKDEV
 751         select ARCH_REQUIRE_GPIOLIB
 752         help
 753           Support for ST-Ericsson's Ux500 architecture
 754
 755 config ARCH_NOMADIK
 756         bool "STMicroelectronics Nomadik"
 757         select ARM_AMBA
 758         select ARM_VIC
 759         select CPU_ARM926T
 760         select COMMON_CLKDEV
 761         select GENERIC_CLOCKEVENTS
 762         select ARCH_REQUIRE_GPIOLIB
 763         help
 764           Support for the Nomadik platform by ST-Ericsson
 765
 766 config ARCH_DAVINCI
 767         bool "TI DaVinci"
 768         select GENERIC_CLOCKEVENTS
 769         select ARCH_REQUIRE_GPIOLIB
 770         select ZONE_DMA
 771         select HAVE_IDE
 772         select COMMON_CLKDEV
 773         select GENERIC_ALLOCATOR
 774         select ARCH_HAS_HOLES_MEMORYMODEL
 775         help
 776           Support for TI's DaVinci platform.
 777
 778 config ARCH_OMAP
 779         bool "TI OMAP"
 780         select HAVE_CLK
 781         select ARCH_REQUIRE_GPIOLIB
 782         select ARCH_HAS_CPUFREQ
 783         select GENERIC_CLOCKEVENTS
 784         select ARCH_HAS_HOLES_MEMORYMODEL
 785         help
 786           Support for TI's OMAP platform (OMAP1 and OMAP2).
 787
 788 config PLAT_SPEAR
 789         bool "ST SPEAr"
 790         select ARM_AMBA
 791         select ARCH_REQUIRE_GPIOLIB
 792         select COMMON_CLKDEV
 793         select GENERIC_CLOCKEVENTS
 794         select HAVE_CLK
 795         help
 796           Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
 797
 798 endchoice
 799
 800 #
 801 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 802 # Kconfigs may be included either alphabetically (according to the
 803 # plat- suffix) or along side the corresponding mach-* source.
 804 #
 805 source "arch/arm/mach-aaec2000/Kconfig"
 806
 807 source "arch/arm/mach-at91/Kconfig"
 808
 809 source "arch/arm/mach-bcmring/Kconfig"
 810
 811 source "arch/arm/mach-clps711x/Kconfig"
 812
 813 source "arch/arm/mach-cns3xxx/Kconfig"
 814
 815 source "arch/arm/mach-davinci/Kconfig"
 816
 817 source "arch/arm/mach-dove/Kconfig"
 818
 819 source "arch/arm/mach-ep93xx/Kconfig"
 820
 821 source "arch/arm/mach-footbridge/Kconfig"
 822
 823 source "arch/arm/mach-gemini/Kconfig"
 824
 825 source "arch/arm/mach-h720x/Kconfig"
 826
 827 source "arch/arm/mach-integrator/Kconfig"
 828
 829 source "arch/arm/mach-iop32x/Kconfig"
 830
 831 source "arch/arm/mach-iop33x/Kconfig"
 832
 833 source "arch/arm/mach-iop13xx/Kconfig"
 834
 835 source "arch/arm/mach-ixp4xx/Kconfig"
 836
 837 source "arch/arm/mach-ixp2000/Kconfig"
 838
 839 source "arch/arm/mach-ixp23xx/Kconfig"
 840
 841 source "arch/arm/mach-kirkwood/Kconfig"
 842
 843 source "arch/arm/mach-ks8695/Kconfig"
 844
 845 source "arch/arm/mach-lh7a40x/Kconfig"
 846
 847 source "arch/arm/mach-loki/Kconfig"
 848
 849 source "arch/arm/mach-msm/Kconfig"
 850
 851 source "arch/arm/mach-mv78xx0/Kconfig"
 852
 853 source "arch/arm/plat-mxc/Kconfig"
 854
 855 source "arch/arm/mach-netx/Kconfig"
 856
 857 source "arch/arm/mach-nomadik/Kconfig"
 858 source "arch/arm/plat-nomadik/Kconfig"
 859
 860 source "arch/arm/mach-ns9xxx/Kconfig"
 861
 862 source "arch/arm/mach-nuc93x/Kconfig"
 863
 864 source "arch/arm/plat-omap/Kconfig"
 865
 866 source "arch/arm/mach-omap1/Kconfig"
 867
 868 source "arch/arm/mach-omap2/Kconfig"
 869
 870 source "arch/arm/mach-orion5x/Kconfig"
 871
 872 source "arch/arm/mach-pxa/Kconfig"
 873 source "arch/arm/plat-pxa/Kconfig"
 874
 875 source "arch/arm/mach-mmp/Kconfig"
 876
 877 source "arch/arm/mach-realview/Kconfig"
 878
 879 source "arch/arm/mach-sa1100/Kconfig"
 880
 881 source "arch/arm/plat-samsung/Kconfig"
 882 source "arch/arm/plat-s3c24xx/Kconfig"
 883 source "arch/arm/plat-s5p/Kconfig"
 884
 885 source "arch/arm/plat-spear/Kconfig"
 886
 887 if ARCH_S3C2410
 888 source "arch/arm/mach-s3c2400/Kconfig"
 889 source "arch/arm/mach-s3c2410/Kconfig"
 890 source "arch/arm/mach-s3c2412/Kconfig"
 891 source "arch/arm/mach-s3c2416/Kconfig"
 892 source "arch/arm/mach-s3c2440/Kconfig"
 893 source "arch/arm/mach-s3c2443/Kconfig"
 894 endif
 895
 896 if ARCH_S3C64XX
 897 source "arch/arm/mach-s3c64xx/Kconfig"
 898 endif
 899
 900 source "arch/arm/mach-s5p6440/Kconfig"
 901
 902 source "arch/arm/mach-s5p6442/Kconfig"
 903
 904 source "arch/arm/mach-s5pc100/Kconfig"
 905
 906 source "arch/arm/mach-s5pv210/Kconfig"
 907
 908 source "arch/arm/mach-shmobile/Kconfig"
 909
 910 source "arch/arm/plat-stmp3xxx/Kconfig"
 911
 912 source "arch/arm/mach-u300/Kconfig"
 913
 914 source "arch/arm/mach-ux500/Kconfig"
 915
 916 source "arch/arm/mach-versatile/Kconfig"
 917
 918 source "arch/arm/mach-vexpress/Kconfig"
 919
 920 source "arch/arm/mach-w90x900/Kconfig"
 921
 922 # Definitions to make life easier
 923 config ARCH_ACORN
 924         bool
 925
 926 config PLAT_IOP
 927         bool
 928         select GENERIC_CLOCKEVENTS
 929
 930 config PLAT_ORION
 931         bool
 932
 933 config PLAT_PXA
 934         bool
 935
 936 config PLAT_VERSATILE
 937         bool
 938
 939 config ARM_TIMER_SP804
 940         bool
 941
 942 source arch/arm/mm/Kconfig
 943
 944 config IWMMXT
 945         bool "Enable iWMMXt support"
 946         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 947         default y if PXA27x || PXA3xx || ARCH_MMP
 948         help
 949           Enable support for iWMMXt context switching at run time if
 950           running on a CPU that supports it.
 951
 952 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 953 config XSCALE_PMU
 954         bool
 955         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 956         default y
 957
 958 config CPU_HAS_PMU
 959         depends on CPU_V6 || CPU_V7 || XSCALE_PMU
 960         default y
 961         bool
 962
 963 if !MMU
 964 source "arch/arm/Kconfig-nommu"
 965 endif
 966
 967 config ARM_ERRATA_411920
 968         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 969         depends on CPU_V6 && !SMP
 970         help
 971           Invalidation of the Instruction Cache operation can
 972           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 973           It does not affect the MPCore. This option enables the ARM Ltd.
 974           recommended workaround.
 975
 976 config ARM_ERRATA_430973
 977         bool "ARM errata: Stale prediction on replaced interworking branch"
 978         depends on CPU_V7
 979         help
 980           This option enables the workaround for the 430973 Cortex-A8
 981           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 982           interworking branch is replaced with another code sequence at the
 983           same virtual address, whether due to self-modifying code or virtual
 984           to physical address re-mapping, Cortex-A8 does not recover from the
 985           stale interworking branch prediction. This results in Cortex-A8
 986           executing the new code sequence in the incorrect ARM or Thumb state.
 987           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 988           and also flushes the branch target cache at every context switch.
 989           Note that setting specific bits in the ACTLR register may not be
 990           available in non-secure mode.
 991
 992 config ARM_ERRATA_458693
 993         bool "ARM errata: Processor deadlock when a false hazard is created"
 994         depends on CPU_V7
 995         help
 996           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 997           erratum. For very specific sequences of memory operations, it is
 998           possible for a hazard condition intended for a cache line to instead
 999           be incorrectly associated with a different cache line. This false
1000           hazard might then cause a processor deadlock. The workaround enables
1001           the L1 caching of the NEON accesses and disables the PLD instruction
1002           in the ACTLR register. Note that setting specific bits in the ACTLR
1003           register may not be available in non-secure mode.
1004
1005 config ARM_ERRATA_460075
1006         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1007         depends on CPU_V7
1008         help
1009           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1010           erratum. Any asynchronous access to the L2 cache may encounter a
1011           situation in which recent store transactions to the L2 cache are lost
1012           and overwritten with stale memory contents from external memory. The
1013           workaround disables the write-allocate mode for the L2 cache via the
1014           ACTLR register. Note that setting specific bits in the ACTLR register
1015           may not be available in non-secure mode.
1016
1017 config PL310_ERRATA_588369
1018         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1019         depends on CACHE_L2X0 && ARCH_OMAP4
1020         help
1021            The PL310 L2 cache controller implements three types of Clean &
1022            Invalidate maintenance operations: by Physical Address
1023            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1024            They are architecturally defined to behave as the execution of a
1025            clean operation followed immediately by an invalidate operation,
1026            both performing to the same memory location. This functionality
1027            is not correctly implemented in PL310 as clean lines are not
1028            invalidated as a result of these operations. Note that this errata
1029            uses Texas Instrument's secure monitor api.
1030 endmenu
1031
1032 source "arch/arm/common/Kconfig"
1033
1034 config FORCE_MAX_ZONEORDER
1035         int
1036         depends on SA1111
1037         default "9"
1038
1039 menu "Bus support"
1040
1041 config ARM_AMBA
1042         bool
1043
1044 config ISA
1045         bool
1046         help
1047           Find out whether you have ISA slots on your motherboard.  ISA is the
1048           name of a bus system, i.e. the way the CPU talks to the other stuff
1049           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1050           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1051           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1052
1053 # Select ISA DMA controller support
1054 config ISA_DMA
1055         bool
1056         select ISA_DMA_API
1057
1058 # Select ISA DMA interface
1059 config ISA_DMA_API
1060         bool
1061
1062 config PCI
1063         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1064         help
1065           Find out whether you have a PCI motherboard. PCI is the name of a
1066           bus system, i.e. the way the CPU talks to the other stuff inside
1067           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1068           VESA. If you have PCI, say Y, otherwise N.
1069
1070 config PCI_DOMAINS
1071         bool
1072         depends on PCI
1073
1074 config PCI_SYSCALL
1075         def_bool PCI
1076
1077 # Select the host bridge type
1078 config PCI_HOST_VIA82C505
1079         bool
1080         depends on PCI && ARCH_SHARK
1081         default y
1082
1083 config PCI_HOST_ITE8152
1084         bool
1085         depends on PCI && MACH_ARMCORE
1086         default y
1087         select DMABOUNCE
1088
1089 source "drivers/pci/Kconfig"
1090
1091 source "drivers/pcmcia/Kconfig"
1092
1093 endmenu
1094
1095 menu "Kernel Features"
1096
1097 source "kernel/time/Kconfig"
1098
1099 config SMP
1100         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1101         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1102                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1103                  ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1104         depends on GENERIC_CLOCKEVENTS
1105         select USE_GENERIC_SMP_HELPERS
1106         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1107         help
1108           This enables support for systems with more than one CPU. If you have
1109           a system with only one CPU, like most personal computers, say N. If
1110           you have a system with more than one CPU, say Y.
1111
1112           If you say N here, the kernel will run on single and multiprocessor
1113           machines, but will use only one CPU of a multiprocessor machine. If
1114           you say Y here, the kernel will run on many, but not all, single
1115           processor machines. On a single processor machine, the kernel will
1116           run faster if you say N here.
1117
1118           See also <file:Documentation/i386/IO-APIC.txt>,
1119           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1120           <http://www.linuxdoc.org/docs.html#howto>.
1121
1122           If you don't know what to do here, say N.
1123
1124 config HAVE_ARM_SCU
1125         bool
1126         depends on SMP
1127         help
1128           This option enables support for the ARM system coherency unit
1129
1130 config HAVE_ARM_TWD
1131         bool
1132         depends on SMP
1133         help
1134           This options enables support for the ARM timer and watchdog unit
1135
1136 choice
1137         prompt "Memory split"
1138         default VMSPLIT_3G
1139         help
1140           Select the desired split between kernel and user memory.
1141
1142           If you are not absolutely sure what you are doing, leave this
1143           option alone!
1144
1145         config VMSPLIT_3G
1146                 bool "3G/1G user/kernel split"
1147         config VMSPLIT_2G
1148                 bool "2G/2G user/kernel split"
1149         config VMSPLIT_1G
1150                 bool "1G/3G user/kernel split"
1151 endchoice
1152
1153 config PAGE_OFFSET
1154         hex
1155         default 0x40000000 if VMSPLIT_1G
1156         default 0x80000000 if VMSPLIT_2G
1157         default 0xC0000000
1158
1159 config NR_CPUS
1160         int "Maximum number of CPUs (2-32)"
1161         range 2 32
1162         depends on SMP
1163         default "4"
1164
1165 config HOTPLUG_CPU
1166         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1167         depends on SMP && HOTPLUG && EXPERIMENTAL
1168         help
1169           Say Y here to experiment with turning CPUs off and on.  CPUs
1170           can be controlled through /sys/devices/system/cpu.
1171
1172 config LOCAL_TIMERS
1173         bool "Use local timer interrupts"
1174         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1175                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1176         default y
1177         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1178         help
1179           Enable support for local timers on SMP platforms, rather then the
1180           legacy IPI broadcast method.  Local timers allows the system
1181           accounting to be spread across the timer interval, preventing a
1182           "thundering herd" at every timer tick.
1183
1184 source kernel/Kconfig.preempt
1185
1186 config HZ
1187         int
1188         default 128 if ARCH_L7200
1189         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1190         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1191         default AT91_TIMER_HZ if ARCH_AT91
1192         default 100
1193
1194 config THUMB2_KERNEL
1195         bool "Compile the kernel in Thumb-2 mode"
1196         depends on CPU_V7 && EXPERIMENTAL
1197         select AEABI
1198         select ARM_ASM_UNIFIED
1199         help
1200           By enabling this option, the kernel will be compiled in
1201           Thumb-2 mode. A compiler/assembler that understand the unified
1202           ARM-Thumb syntax is needed.
1203
1204           If unsure, say N.
1205
1206 config ARM_ASM_UNIFIED
1207         bool
1208
1209 config AEABI
1210         bool "Use the ARM EABI to compile the kernel"
1211         help
1212           This option allows for the kernel to be compiled using the latest
1213           ARM ABI (aka EABI).  This is only useful if you are using a user
1214           space environment that is also compiled with EABI.
1215
1216           Since there are major incompatibilities between the legacy ABI and
1217           EABI, especially with regard to structure member alignment, this
1218           option also changes the kernel syscall calling convention to
1219           disambiguate both ABIs and allow for backward compatibility support
1220           (selected with CONFIG_OABI_COMPAT).
1221
1222           To use this you need GCC version 4.0.0 or later.
1223
1224 config OABI_COMPAT
1225         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1226         depends on AEABI && EXPERIMENTAL
1227         default y
1228         help
1229           This option preserves the old syscall interface along with the
1230           new (ARM EABI) one. It also provides a compatibility layer to
1231           intercept syscalls that have structure arguments which layout
1232           in memory differs between the legacy ABI and the new ARM EABI
1233           (only for non "thumb" binaries). This option adds a tiny
1234           overhead to all syscalls and produces a slightly larger kernel.
1235           If you know you'll be using only pure EABI user space then you
1236           can say N here. If this option is not selected and you attempt
1237           to execute a legacy ABI binary then the result will be
1238           UNPREDICTABLE (in fact it can be predicted that it won't work
1239           at all). If in doubt say Y.
1240
1241 config ARCH_HAS_HOLES_MEMORYMODEL
1242         bool
1243
1244 # Discontigmem is deprecated
1245 config ARCH_DISCONTIGMEM_ENABLE
1246         bool
1247
1248 config ARCH_SPARSEMEM_ENABLE
1249         bool
1250
1251 config ARCH_SPARSEMEM_DEFAULT
1252         def_bool ARCH_SPARSEMEM_ENABLE
1253
1254 config ARCH_SELECT_MEMORY_MODEL
1255         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1256
1257 config NODES_SHIFT
1258         int
1259         default "4" if ARCH_LH7A40X
1260         default "2"
1261         depends on NEED_MULTIPLE_NODES
1262
1263 config HIGHMEM
1264         bool "High Memory Support (EXPERIMENTAL)"
1265         depends on MMU && EXPERIMENTAL
1266         help
1267           The address space of ARM processors is only 4 Gigabytes large
1268           and it has to accommodate user address space, kernel address
1269           space as well as some memory mapped IO. That means that, if you
1270           have a large amount of physical memory and/or IO, not all of the
1271           memory can be "permanently mapped" by the kernel. The physical
1272           memory that is not permanently mapped is called "high memory".
1273
1274           Depending on the selected kernel/user memory split, minimum
1275           vmalloc space and actual amount of RAM, you may not need this
1276           option which should result in a slightly faster kernel.
1277
1278           If unsure, say n.
1279
1280 config HIGHPTE
1281         bool "Allocate 2nd-level pagetables from highmem"
1282         depends on HIGHMEM
1283         depends on !OUTER_CACHE
1284
1285 config HW_PERF_EVENTS
1286         bool "Enable hardware performance counter support for perf events"
1287         depends on PERF_EVENTS && CPU_HAS_PMU
1288         default y
1289         help
1290           Enable hardware performance counter support for perf events. If
1291           disabled, perf events will use software events only.
1292
1293 config SPARSE_IRQ
1294         bool "Support sparse irq numbering"
1295         depends on EXPERIMENTAL
1296         help
1297           This enables support for sparse irqs. This is useful in general
1298           as most CPUs have a fairly sparse array of IRQ vectors, which
1299           the irq_desc then maps directly on to. Systems with a high
1300           number of off-chip IRQs will want to treat this as
1301           experimental until they have been independently verified.
1302
1303           If you don't know what to do here, say N.
1304
1305 source "mm/Kconfig"
1306
1307 config LEDS
1308         bool "Timer and CPU usage LEDs"
1309         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1310                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1311                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1312                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1313                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1314                    ARCH_AT91 || ARCH_DAVINCI || \
1315                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1316         help
1317           If you say Y here, the LEDs on your machine will be used
1318           to provide useful information about your current system status.
1319
1320           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1321           be able to select which LEDs are active using the options below. If
1322           you are compiling a kernel for the EBSA-110 or the LART however, the
1323           red LED will simply flash regularly to indicate that the system is
1324           still functional. It is safe to say Y here if you have a CATS
1325           system, but the driver will do nothing.
1326
1327 config LEDS_TIMER
1328         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1329                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1330                             || MACH_OMAP_PERSEUS2
1331         depends on LEDS
1332         depends on !GENERIC_CLOCKEVENTS
1333         default y if ARCH_EBSA110
1334         help
1335           If you say Y here, one of the system LEDs (the green one on the
1336           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1337           will flash regularly to indicate that the system is still
1338           operational. This is mainly useful to kernel hackers who are
1339           debugging unstable kernels.
1340
1341           The LART uses the same LED for both Timer LED and CPU usage LED
1342           functions. You may choose to use both, but the Timer LED function
1343           will overrule the CPU usage LED.
1344
1345 config LEDS_CPU
1346         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1347                         !ARCH_OMAP) \
1348                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1349                         || MACH_OMAP_PERSEUS2
1350         depends on LEDS
1351         help
1352           If you say Y here, the red LED will be used to give a good real
1353           time indication of CPU usage, by lighting whenever the idle task
1354           is not currently executing.
1355
1356           The LART uses the same LED for both Timer LED and CPU usage LED
1357           functions. You may choose to use both, but the Timer LED function
1358           will overrule the CPU usage LED.
1359
1360 config ALIGNMENT_TRAP
1361         bool
1362         depends on CPU_CP15_MMU
1363         default y if !ARCH_EBSA110
1364         select HAVE_PROC_CPU if PROC_FS
1365         help
1366           ARM processors cannot fetch/store information which is not
1367           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1368           address divisible by 4. On 32-bit ARM processors, these non-aligned
1369           fetch/store instructions will be emulated in software if you say
1370           here, which has a severe performance impact. This is necessary for
1371           correct operation of some network protocols. With an IP-only
1372           configuration it is safe to say N, otherwise say Y.
1373
1374 config UACCESS_WITH_MEMCPY
1375         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1376         depends on MMU && EXPERIMENTAL
1377         default y if CPU_FEROCEON
1378         help
1379           Implement faster copy_to_user and clear_user methods for CPU
1380           cores where a 8-word STM instruction give significantly higher
1381           memory write throughput than a sequence of individual 32bit stores.
1382
1383           A possible side effect is a slight increase in scheduling latency
1384           between threads sharing the same address space if they invoke
1385           such copy operations with large buffers.
1386
1387           However, if the CPU data cache is using a write-allocate mode,
1388           this option is unlikely to provide any performance gain.
1389
1390 endmenu
1391
1392 menu "Boot options"
1393
1394 # Compressed boot loader in ROM.  Yes, we really want to ask about
1395 # TEXT and BSS so we preserve their values in the config files.
1396 config ZBOOT_ROM_TEXT
1397         hex "Compressed ROM boot loader base address"
1398         default "0"
1399         help
1400           The physical address at which the ROM-able zImage is to be
1401           placed in the target.  Platforms which normally make use of
1402           ROM-able zImage formats normally set this to a suitable
1403           value in their defconfig file.
1404
1405           If ZBOOT_ROM is not enabled, this has no effect.
1406
1407 config ZBOOT_ROM_BSS
1408         hex "Compressed ROM boot loader BSS address"
1409         default "0"
1410         help
1411           The base address of an area of read/write memory in the target
1412           for the ROM-able zImage which must be available while the
1413           decompressor is running. It must be large enough to hold the
1414           entire decompressed kernel plus an additional 128 KiB.
1415           Platforms which normally make use of ROM-able zImage formats
1416           normally set this to a suitable value in their defconfig file.
1417
1418           If ZBOOT_ROM is not enabled, this has no effect.
1419
1420 config ZBOOT_ROM
1421         bool "Compressed boot loader in ROM/flash"
1422         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1423         help
1424           Say Y here if you intend to execute your compressed kernel image
1425           (zImage) directly from ROM or flash.  If unsure, say N.
1426
1427 config CMDLINE
1428         string "Default kernel command string"
1429         default ""
1430         help
1431           On some architectures (EBSA110 and CATS), there is currently no way
1432           for the boot loader to pass arguments to the kernel. For these
1433           architectures, you should supply some command-line options at build
1434           time by entering them here. As a minimum, you should specify the
1435           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1436
1437 config CMDLINE_FORCE
1438         bool "Always use the default kernel command string"
1439         depends on CMDLINE != ""
1440         help
1441           Always use the default kernel command string, even if the boot
1442           loader passes other arguments to the kernel.
1443           This is useful if you cannot or don't want to change the
1444           command-line options your boot loader passes to the kernel.
1445
1446           If unsure, say N.
1447
1448 config XIP_KERNEL
1449         bool "Kernel Execute-In-Place from ROM"
1450         depends on !ZBOOT_ROM
1451         help
1452           Execute-In-Place allows the kernel to run from non-volatile storage
1453           directly addressable by the CPU, such as NOR flash. This saves RAM
1454           space since the text section of the kernel is not loaded from flash
1455           to RAM.  Read-write sections, such as the data section and stack,
1456           are still copied to RAM.  The XIP kernel is not compressed since
1457           it has to run directly from flash, so it will take more space to
1458           store it.  The flash address used to link the kernel object files,
1459           and for storing it, is configuration dependent. Therefore, if you
1460           say Y here, you must know the proper physical address where to
1461           store the kernel image depending on your own flash memory usage.
1462
1463           Also note that the make target becomes "make xipImage" rather than
1464           "make zImage" or "make Image".  The final kernel binary to put in
1465           ROM memory will be arch/arm/boot/xipImage.
1466
1467           If unsure, say N.
1468
1469 config XIP_PHYS_ADDR
1470         hex "XIP Kernel Physical Location"
1471         depends on XIP_KERNEL
1472         default "0x00080000"
1473         help
1474           This is the physical address in your flash memory the kernel will
1475           be linked for and stored to.  This address is dependent on your
1476           own flash usage.
1477
1478 config KEXEC
1479         bool "Kexec system call (EXPERIMENTAL)"
1480         depends on EXPERIMENTAL
1481         help
1482           kexec is a system call that implements the ability to shutdown your
1483           current kernel, and to start another kernel.  It is like a reboot
1484           but it is independent of the system firmware.   And like a reboot
1485           you can start any kernel with it, not just Linux.
1486
1487           It is an ongoing process to be certain the hardware in a machine
1488           is properly shutdown, so do not be surprised if this code does not
1489           initially work for you.  It may help to enable device hotplugging
1490           support.
1491
1492 config ATAGS_PROC
1493         bool "Export atags in procfs"
1494         depends on KEXEC
1495         default y
1496         help
1497           Should the atags used to boot the kernel be exported in an "atags"
1498           file in procfs. Useful with kexec.
1499
1500 endmenu
1501
1502 menu "CPU Power Management"
1503
1504 if ARCH_HAS_CPUFREQ
1505
1506 source "drivers/cpufreq/Kconfig"
1507
1508 config CPU_FREQ_SA1100
1509         bool
1510
1511 config CPU_FREQ_SA1110
1512         bool
1513
1514 config CPU_FREQ_INTEGRATOR
1515         tristate "CPUfreq driver for ARM Integrator CPUs"
1516         depends on ARCH_INTEGRATOR && CPU_FREQ
1517         default y
1518         help
1519           This enables the CPUfreq driver for ARM Integrator CPUs.
1520
1521           For details, take a look at <file:Documentation/cpu-freq>.
1522
1523           If in doubt, say Y.
1524
1525 config CPU_FREQ_PXA
1526         bool
1527         depends on CPU_FREQ && ARCH_PXA && PXA25x
1528         default y
1529         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1530
1531 config CPU_FREQ_S3C64XX
1532         bool "CPUfreq support for Samsung S3C64XX CPUs"
1533         depends on CPU_FREQ && CPU_S3C6410
1534
1535 config CPU_FREQ_S3C
1536         bool
1537         help
1538           Internal configuration node for common cpufreq on Samsung SoC
1539
1540 config CPU_FREQ_S3C24XX
1541         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1542         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1543         select CPU_FREQ_S3C
1544         help
1545           This enables the CPUfreq driver for the Samsung S3C24XX family
1546           of CPUs.
1547
1548           For details, take a look at <file:Documentation/cpu-freq>.
1549
1550           If in doubt, say N.
1551
1552 config CPU_FREQ_S3C24XX_PLL
1553         bool "Support CPUfreq changing of PLL frequency"
1554         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1555         help
1556           Compile in support for changing the PLL frequency from the
1557           S3C24XX series CPUfreq driver. The PLL takes time to settle
1558           after a frequency change, so by default it is not enabled.
1559
1560           This also means that the PLL tables for the selected CPU(s) will
1561           be built which may increase the size of the kernel image.
1562
1563 config CPU_FREQ_S3C24XX_DEBUG
1564         bool "Debug CPUfreq Samsung driver core"
1565         depends on CPU_FREQ_S3C24XX
1566         help
1567           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1568
1569 config CPU_FREQ_S3C24XX_IODEBUG
1570         bool "Debug CPUfreq Samsung driver IO timing"
1571         depends on CPU_FREQ_S3C24XX
1572         help
1573           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1574
1575 config CPU_FREQ_S3C24XX_DEBUGFS
1576         bool "Export debugfs for CPUFreq"
1577         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1578         help
1579           Export status information via debugfs.
1580
1581 endif
1582
1583 source "drivers/cpuidle/Kconfig"
1584
1585 endmenu
1586
1587 menu "Floating point emulation"
1588
1589 comment "At least one emulation must be selected"
1590
1591 config FPE_NWFPE
1592         bool "NWFPE math emulation"
1593         depends on !AEABI || OABI_COMPAT
1594         ---help---
1595           Say Y to include the NWFPE floating point emulator in the kernel.
1596           This is necessary to run most binaries. Linux does not currently
1597           support floating point hardware so you need to say Y here even if
1598           your machine has an FPA or floating point co-processor podule.
1599
1600           You may say N here if you are going to load the Acorn FPEmulator
1601           early in the bootup.
1602
1603 config FPE_NWFPE_XP
1604         bool "Support extended precision"
1605         depends on FPE_NWFPE
1606         help
1607           Say Y to include 80-bit support in the kernel floating-point
1608           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1609           Note that gcc does not generate 80-bit operations by default,
1610           so in most cases this option only enlarges the size of the
1611           floating point emulator without any good reason.
1612
1613           You almost surely want to say N here.
1614
1615 config FPE_FASTFPE
1616         bool "FastFPE math emulation (EXPERIMENTAL)"
1617         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1618         ---help---
1619           Say Y here to include the FAST floating point emulator in the kernel.
1620           This is an experimental much faster emulator which now also has full
1621           precision for the mantissa.  It does not support any exceptions.
1622           It is very simple, and approximately 3-6 times faster than NWFPE.
1623
1624           It should be sufficient for most programs.  It may be not suitable
1625           for scientific calculations, but you have to check this for yourself.
1626           If you do not feel you need a faster FP emulation you should better
1627           choose NWFPE.
1628
1629 config VFP
1630         bool "VFP-format floating point maths"
1631         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1632         help
1633           Say Y to include VFP support code in the kernel. This is needed
1634           if your hardware includes a VFP unit.
1635
1636           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1637           release notes and additional status information.
1638
1639           Say N if your target does not have VFP hardware.
1640
1641 config VFPv3
1642         bool
1643         depends on VFP
1644         default y if CPU_V7
1645
1646 config NEON
1647         bool "Advanced SIMD (NEON) Extension support"
1648         depends on VFPv3 && CPU_V7
1649         help
1650           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1651           Extension.
1652
1653 endmenu
1654
1655 menu "Userspace binary formats"
1656
1657 source "fs/Kconfig.binfmt"
1658
1659 config ARTHUR
1660         tristate "RISC OS personality"
1661         depends on !AEABI
1662         help
1663           Say Y here to include the kernel code necessary if you want to run
1664           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1665           experimental; if this sounds frightening, say N and sleep in peace.
1666           You can also say M here to compile this support as a module (which
1667           will be called arthur).
1668
1669 endmenu
1670
1671 menu "Power management options"
1672
1673 source "kernel/power/Kconfig"
1674
1675 config ARCH_SUSPEND_POSSIBLE
1676         def_bool y
1677
1678 endmenu
1679
1680 source "net/Kconfig"
1681
1682 source "drivers/Kconfig"
1683
1684 source "fs/Kconfig"
1685
1686 source "arch/arm/Kconfig.debug"
1687
1688 source "security/Kconfig"
1689
1690 source "crypto/Kconfig"
1691
1692 source "lib/Kconfig"