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 HAVE_MEMBLOCK
  14         select RTC_LIB
  15         select SYS_SUPPORTS_APM_EMULATION
  16         select GENERIC_ATOMIC64 if (!CPU_32v6K)
  17         select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  18         select HAVE_ARCH_KGDB
  19         select HAVE_KPROBES if (!XIP_KERNEL)
  20         select HAVE_KRETPROBES if (HAVE_KPROBES)
  21         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  22         select HAVE_GENERIC_DMA_COHERENT
  23         select HAVE_KERNEL_GZIP
  24         select HAVE_KERNEL_LZO
  25         select HAVE_KERNEL_LZMA
  26         select HAVE_PERF_EVENTS
  27         select PERF_USE_VMALLOC
  28         select HAVE_REGS_AND_STACK_ACCESS_API
  29         help
  30           The ARM series is a line of low-power-consumption RISC chip designs
  31           licensed by ARM Ltd and targeted at embedded applications and
  32           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  33           manufactured, but legacy ARM-based PC hardware remains popular in
  34           Europe.  There is an ARM Linux project with a web page at
  35           <http://www.arm.linux.org.uk/>.
  36
  37 config HAVE_PWM
  38         bool
  39
  40 config SYS_SUPPORTS_APM_EMULATION
  41         bool
  42
  43 config GENERIC_GPIO
  44         bool
  45
  46 config GENERIC_TIME
  47         bool
  48         default y
  49
  50 config ARCH_USES_GETTIMEOFFSET
  51         bool
  52         default n
  53
  54 config GENERIC_CLOCKEVENTS
  55         bool
  56
  57 config GENERIC_CLOCKEVENTS_BROADCAST
  58         bool
  59         depends on GENERIC_CLOCKEVENTS
  60         default y if SMP
  61
  62 config HAVE_TCM
  63         bool
  64         select GENERIC_ALLOCATOR
  65
  66 config HAVE_PROC_CPU
  67         bool
  68
  69 config NO_IOPORT
  70         bool
  71
  72 config EISA
  73         bool
  74         ---help---
  75           The Extended Industry Standard Architecture (EISA) bus was
  76           developed as an open alternative to the IBM MicroChannel bus.
  77
  78           The EISA bus provided some of the features of the IBM MicroChannel
  79           bus while maintaining backward compatibility with cards made for
  80           the older ISA bus.  The EISA bus saw limited use between 1988 and
  81           1995 when it was made obsolete by the PCI bus.
  82
  83           Say Y here if you are building a kernel for an EISA-based machine.
  84
  85           Otherwise, say N.
  86
  87 config SBUS
  88         bool
  89
  90 config MCA
  91         bool
  92         help
  93           MicroChannel Architecture is found in some IBM PS/2 machines and
  94           laptops.  It is a bus system similar to PCI or ISA. See
  95           <file:Documentation/mca.txt> (and especially the web page given
  96           there) before attempting to build an MCA bus kernel.
  97
  98 config GENERIC_HARDIRQS
  99         bool
 100         default y
 101
 102 config STACKTRACE_SUPPORT
 103         bool
 104         default y
 105
 106 config HAVE_LATENCYTOP_SUPPORT
 107         bool
 108         depends on !SMP
 109         default y
 110
 111 config LOCKDEP_SUPPORT
 112         bool
 113         default y
 114
 115 config TRACE_IRQFLAGS_SUPPORT
 116         bool
 117         default y
 118
 119 config HARDIRQS_SW_RESEND
 120         bool
 121         default y
 122
 123 config GENERIC_IRQ_PROBE
 124         bool
 125         default y
 126
 127 config GENERIC_LOCKBREAK
 128         bool
 129         default y
 130         depends on SMP && PREEMPT
 131
 132 config RWSEM_GENERIC_SPINLOCK
 133         bool
 134         default y
 135
 136 config RWSEM_XCHGADD_ALGORITHM
 137         bool
 138
 139 config ARCH_HAS_ILOG2_U32
 140         bool
 141
 142 config ARCH_HAS_ILOG2_U64
 143         bool
 144
 145 config ARCH_HAS_CPUFREQ
 146         bool
 147         help
 148           Internal node to signify that the ARCH has CPUFREQ support
 149           and that the relevant menu configurations are displayed for
 150           it.
 151
 152 config GENERIC_HWEIGHT
 153         bool
 154         default y
 155
 156 config GENERIC_CALIBRATE_DELAY
 157         bool
 158         default y
 159
 160 config ARCH_MAY_HAVE_PC_FDC
 161         bool
 162
 163 config ZONE_DMA
 164         bool
 165
 166 config NEED_DMA_MAP_STATE
 167        def_bool y
 168
 169 config GENERIC_ISA_DMA
 170         bool
 171
 172 config FIQ
 173         bool
 174
 175 config ARCH_MTD_XIP
 176         bool
 177
 178 config GENERIC_HARDIRQS_NO__DO_IRQ
 179         def_bool y
 180
 181 config ARM_L1_CACHE_SHIFT_6
 182         bool
 183         help
 184           Setting ARM L1 cache line size to 64 Bytes.
 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 #
 208 # The "ARM system type" choice list is ordered alphabetically by option
 209 # text.  Please add new entries in the option alphabetic order.
 210 #
 211 choice
 212         prompt "ARM system type"
 213         default ARCH_VERSATILE
 214
 215 config ARCH_AAEC2000
 216         bool "Agilent AAEC-2000 based"
 217         select CPU_ARM920T
 218         select ARM_AMBA
 219         select HAVE_CLK
 220         select ARCH_USES_GETTIMEOFFSET
 221         help
 222           This enables support for systems based on the Agilent AAEC-2000
 223
 224 config ARCH_INTEGRATOR
 225         bool "ARM Ltd. Integrator family"
 226         select ARM_AMBA
 227         select ARCH_HAS_CPUFREQ
 228         select COMMON_CLKDEV
 229         select ICST
 230         select GENERIC_CLOCKEVENTS
 231         select PLAT_VERSATILE
 232         help
 233           Support for ARM's Integrator platform.
 234
 235 config ARCH_REALVIEW
 236         bool "ARM Ltd. RealView family"
 237         select ARM_AMBA
 238         select COMMON_CLKDEV
 239         select ICST
 240         select GENERIC_CLOCKEVENTS
 241         select ARCH_WANT_OPTIONAL_GPIOLIB
 242         select PLAT_VERSATILE
 243         select ARM_TIMER_SP804
 244         select GPIO_PL061 if GPIOLIB
 245         help
 246           This enables support for ARM Ltd RealView boards.
 247
 248 config ARCH_VERSATILE
 249         bool "ARM Ltd. Versatile family"
 250         select ARM_AMBA
 251         select ARM_VIC
 252         select COMMON_CLKDEV
 253         select ICST
 254         select GENERIC_CLOCKEVENTS
 255         select ARCH_WANT_OPTIONAL_GPIOLIB
 256         select PLAT_VERSATILE
 257         select ARM_TIMER_SP804
 258         help
 259           This enables support for ARM Ltd Versatile board.
 260
 261 config ARCH_VEXPRESS
 262         bool "ARM Ltd. Versatile Express family"
 263         select ARCH_WANT_OPTIONAL_GPIOLIB
 264         select ARM_AMBA
 265         select ARM_TIMER_SP804
 266         select COMMON_CLKDEV
 267         select GENERIC_CLOCKEVENTS
 268         select HAVE_CLK
 269         select ICST
 270         select PLAT_VERSATILE
 271         help
 272           This enables support for the ARM Ltd Versatile Express boards.
 273
 274 config ARCH_AT91
 275         bool "Atmel AT91"
 276         select ARCH_REQUIRE_GPIOLIB
 277         select HAVE_CLK
 278         select ARCH_USES_GETTIMEOFFSET
 279         help
 280           This enables support for systems based on the Atmel AT91RM9200,
 281           AT91SAM9 and AT91CAP9 processors.
 282
 283 config ARCH_BCMRING
 284         bool "Broadcom BCMRING"
 285         depends on MMU
 286         select CPU_V6
 287         select ARM_AMBA
 288         select COMMON_CLKDEV
 289         select GENERIC_CLOCKEVENTS
 290         select ARCH_WANT_OPTIONAL_GPIOLIB
 291         help
 292           Support for Broadcom's BCMRing platform.
 293
 294 config ARCH_CLPS711X
 295         bool "Cirrus Logic CLPS711x/EP721x-based"
 296         select CPU_ARM720T
 297         select ARCH_USES_GETTIMEOFFSET
 298         help
 299           Support for Cirrus Logic 711x/721x based boards.
 300
 301 config ARCH_CNS3XXX
 302         bool "Cavium Networks CNS3XXX family"
 303         select CPU_V6
 304         select GENERIC_CLOCKEVENTS
 305         select ARM_GIC
 306         select PCI_DOMAINS if PCI
 307         help
 308           Support for Cavium Networks CNS3XXX platform.
 309
 310 config ARCH_GEMINI
 311         bool "Cortina Systems Gemini"
 312         select CPU_FA526
 313         select ARCH_REQUIRE_GPIOLIB
 314         select ARCH_USES_GETTIMEOFFSET
 315         help
 316           Support for the Cortina Systems Gemini family SoCs
 317
 318 config ARCH_EBSA110
 319         bool "EBSA-110"
 320         select CPU_SA110
 321         select ISA
 322         select NO_IOPORT
 323         select ARCH_USES_GETTIMEOFFSET
 324         help
 325           This is an evaluation board for the StrongARM processor available
 326           from Digital. It has limited hardware on-board, including an
 327           Ethernet interface, two PCMCIA sockets, two serial ports and a
 328           parallel port.
 329
 330 config ARCH_EP93XX
 331         bool "EP93xx-based"
 332         select CPU_ARM920T
 333         select ARM_AMBA
 334         select ARM_VIC
 335         select COMMON_CLKDEV
 336         select ARCH_REQUIRE_GPIOLIB
 337         select ARCH_HAS_HOLES_MEMORYMODEL
 338         select ARCH_USES_GETTIMEOFFSET
 339         help
 340           This enables support for the Cirrus EP93xx series of CPUs.
 341
 342 config ARCH_FOOTBRIDGE
 343         bool "FootBridge"
 344         select CPU_SA110
 345         select FOOTBRIDGE
 346         select ARCH_USES_GETTIMEOFFSET
 347         help
 348           Support for systems based on the DC21285 companion chip
 349           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 350
 351 config ARCH_MXC
 352         bool "Freescale MXC/iMX-based"
 353         select GENERIC_CLOCKEVENTS
 354         select ARCH_REQUIRE_GPIOLIB
 355         select COMMON_CLKDEV
 356         help
 357           Support for Freescale MXC/iMX-based family of processors
 358
 359 config ARCH_STMP3XXX
 360         bool "Freescale STMP3xxx"
 361         select CPU_ARM926T
 362         select COMMON_CLKDEV
 363         select ARCH_REQUIRE_GPIOLIB
 364         select GENERIC_CLOCKEVENTS
 365         select USB_ARCH_HAS_EHCI
 366         help
 367           Support for systems based on the Freescale 3xxx CPUs.
 368
 369 config ARCH_NETX
 370         bool "Hilscher NetX based"
 371         select CPU_ARM926T
 372         select ARM_VIC
 373         select GENERIC_CLOCKEVENTS
 374         help
 375           This enables support for systems based on the Hilscher NetX Soc
 376
 377 config ARCH_H720X
 378         bool "Hynix HMS720x-based"
 379         select CPU_ARM720T
 380         select ISA_DMA_API
 381         select ARCH_USES_GETTIMEOFFSET
 382         help
 383           This enables support for systems based on the Hynix HMS720x
 384
 385 config ARCH_IOP13XX
 386         bool "IOP13xx-based"
 387         depends on MMU
 388         select CPU_XSC3
 389         select PLAT_IOP
 390         select PCI
 391         select ARCH_SUPPORTS_MSI
 392         select VMSPLIT_1G
 393         help
 394           Support for Intel's IOP13XX (XScale) family of processors.
 395
 396 config ARCH_IOP32X
 397         bool "IOP32x-based"
 398         depends on MMU
 399         select CPU_XSCALE
 400         select PLAT_IOP
 401         select PCI
 402         select ARCH_REQUIRE_GPIOLIB
 403         help
 404           Support for Intel's 80219 and IOP32X (XScale) family of
 405           processors.
 406
 407 config ARCH_IOP33X
 408         bool "IOP33x-based"
 409         depends on MMU
 410         select CPU_XSCALE
 411         select PLAT_IOP
 412         select PCI
 413         select ARCH_REQUIRE_GPIOLIB
 414         help
 415           Support for Intel's IOP33X (XScale) family of processors.
 416
 417 config ARCH_IXP23XX
 418         bool "IXP23XX-based"
 419         depends on MMU
 420         select CPU_XSC3
 421         select PCI
 422         select ARCH_USES_GETTIMEOFFSET
 423         help
 424           Support for Intel's IXP23xx (XScale) family of processors.
 425
 426 config ARCH_IXP2000
 427         bool "IXP2400/2800-based"
 428         depends on MMU
 429         select CPU_XSCALE
 430         select PCI
 431         select ARCH_USES_GETTIMEOFFSET
 432         help
 433           Support for Intel's IXP2400/2800 (XScale) family of processors.
 434
 435 config ARCH_IXP4XX
 436         bool "IXP4xx-based"
 437         depends on MMU
 438         select CPU_XSCALE
 439         select GENERIC_GPIO
 440         select GENERIC_CLOCKEVENTS
 441         select DMABOUNCE if PCI
 442         help
 443           Support for Intel's IXP4XX (XScale) family of processors.
 444
 445 config ARCH_DOVE
 446         bool "Marvell Dove"
 447         select PCI
 448         select ARCH_REQUIRE_GPIOLIB
 449         select GENERIC_CLOCKEVENTS
 450         select PLAT_ORION
 451         help
 452           Support for the Marvell Dove SoC 88AP510
 453
 454 config ARCH_KIRKWOOD
 455         bool "Marvell Kirkwood"
 456         select CPU_FEROCEON
 457         select PCI
 458         select ARCH_REQUIRE_GPIOLIB
 459         select GENERIC_CLOCKEVENTS
 460         select PLAT_ORION
 461         help
 462           Support for the following Marvell Kirkwood series SoCs:
 463           88F6180, 88F6192 and 88F6281.
 464
 465 config ARCH_LOKI
 466         bool "Marvell Loki (88RC8480)"
 467         select CPU_FEROCEON
 468         select GENERIC_CLOCKEVENTS
 469         select PLAT_ORION
 470         help
 471           Support for the Marvell Loki (88RC8480) SoC.
 472
 473 config ARCH_LPC32XX
 474         bool "NXP LPC32XX"
 475         select CPU_ARM926T
 476         select ARCH_REQUIRE_GPIOLIB
 477         select HAVE_IDE
 478         select ARM_AMBA
 479         select USB_ARCH_HAS_OHCI
 480         select COMMON_CLKDEV
 481         select GENERIC_TIME
 482         select GENERIC_CLOCKEVENTS
 483         help
 484           Support for the NXP LPC32XX family of processors
 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_TEGRA
 566         bool "NVIDIA Tegra"
 567         select GENERIC_TIME
 568         select GENERIC_CLOCKEVENTS
 569         select GENERIC_GPIO
 570         select HAVE_CLK
 571         select ARCH_HAS_BARRIERS if CACHE_L2X0
 572         help
 573           This enables support for NVIDIA Tegra based systems (Tegra APX,
 574           Tegra 6xx and Tegra 2 series).
 575
 576 config ARCH_PNX4008
 577         bool "Philips Nexperia PNX4008 Mobile"
 578         select CPU_ARM926T
 579         select COMMON_CLKDEV
 580         select ARCH_USES_GETTIMEOFFSET
 581         help
 582           This enables support for Philips PNX4008 mobile platform.
 583
 584 config ARCH_PXA
 585         bool "PXA2xx/PXA3xx-based"
 586         depends on MMU
 587         select ARCH_MTD_XIP
 588         select ARCH_HAS_CPUFREQ
 589         select COMMON_CLKDEV
 590         select ARCH_REQUIRE_GPIOLIB
 591         select GENERIC_CLOCKEVENTS
 592         select TICK_ONESHOT
 593         select PLAT_PXA
 594         help
 595           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 596
 597 config ARCH_MSM
 598         bool "Qualcomm MSM"
 599         select HAVE_CLK
 600         select GENERIC_CLOCKEVENTS
 601         select ARCH_REQUIRE_GPIOLIB
 602         help
 603           Support for Qualcomm MSM/QSD based systems.  This runs on the
 604           apps processor of the MSM/QSD and depends on a shared memory
 605           interface to the modem processor which runs the baseband
 606           stack and controls some vital subsystems
 607           (clock and power control, etc).
 608
 609 config ARCH_SHMOBILE
 610         bool "Renesas SH-Mobile"
 611         help
 612           Support for Renesas's SH-Mobile ARM platforms
 613
 614 config ARCH_RPC
 615         bool "RiscPC"
 616         select ARCH_ACORN
 617         select FIQ
 618         select TIMER_ACORN
 619         select ARCH_MAY_HAVE_PC_FDC
 620         select HAVE_PATA_PLATFORM
 621         select ISA_DMA_API
 622         select NO_IOPORT
 623         select ARCH_SPARSEMEM_ENABLE
 624         select ARCH_USES_GETTIMEOFFSET
 625         help
 626           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 627           CD-ROM interface, serial and parallel port, and the floppy drive.
 628
 629 config ARCH_SA1100
 630         bool "SA1100-based"
 631         select CPU_SA1100
 632         select ISA
 633         select ARCH_SPARSEMEM_ENABLE
 634         select ARCH_MTD_XIP
 635         select ARCH_HAS_CPUFREQ
 636         select CPU_FREQ
 637         select GENERIC_CLOCKEVENTS
 638         select HAVE_CLK
 639         select TICK_ONESHOT
 640         select ARCH_REQUIRE_GPIOLIB
 641         help
 642           Support for StrongARM 11x0 based boards.
 643
 644 config ARCH_S3C2410
 645         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 646         select GENERIC_GPIO
 647         select ARCH_HAS_CPUFREQ
 648         select HAVE_CLK
 649         select ARCH_USES_GETTIMEOFFSET
 650         help
 651           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 652           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 653           the Samsung SMDK2410 development board (and derivatives).
 654
 655           Note, the S3C2416 and the S3C2450 are so close that they even share
 656           the same SoC ID code. This means that there is no seperate machine
 657           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 658
 659 config ARCH_S3C64XX
 660         bool "Samsung S3C64XX"
 661         select PLAT_SAMSUNG
 662         select CPU_V6
 663         select ARM_VIC
 664         select HAVE_CLK
 665         select NO_IOPORT
 666         select ARCH_USES_GETTIMEOFFSET
 667         select ARCH_HAS_CPUFREQ
 668         select ARCH_REQUIRE_GPIOLIB
 669         select SAMSUNG_CLKSRC
 670         select SAMSUNG_IRQ_VIC_TIMER
 671         select SAMSUNG_IRQ_UART
 672         select S3C_GPIO_TRACK
 673         select S3C_GPIO_PULL_UPDOWN
 674         select S3C_GPIO_CFG_S3C24XX
 675         select S3C_GPIO_CFG_S3C64XX
 676         select S3C_DEV_NAND
 677         select USB_ARCH_HAS_OHCI
 678         select SAMSUNG_GPIOLIB_4BIT
 679         help
 680           Samsung S3C64XX series based systems
 681
 682 config ARCH_S5P6440
 683         bool "Samsung S5P6440"
 684         select CPU_V6
 685         select GENERIC_GPIO
 686         select HAVE_CLK
 687         select ARCH_USES_GETTIMEOFFSET
 688         help
 689           Samsung S5P6440 CPU based systems
 690
 691 config ARCH_S5P6442
 692         bool "Samsung S5P6442"
 693         select CPU_V6
 694         select GENERIC_GPIO
 695         select HAVE_CLK
 696         select ARCH_USES_GETTIMEOFFSET
 697         help
 698           Samsung S5P6442 CPU based systems
 699
 700 config ARCH_S5PC100
 701         bool "Samsung S5PC100"
 702         select GENERIC_GPIO
 703         select HAVE_CLK
 704         select CPU_V7
 705         select ARM_L1_CACHE_SHIFT_6
 706         select ARCH_USES_GETTIMEOFFSET
 707         help
 708           Samsung S5PC100 series based systems
 709
 710 config ARCH_S5PV210
 711         bool "Samsung S5PV210/S5PC110"
 712         select CPU_V7
 713         select GENERIC_GPIO
 714         select HAVE_CLK
 715         select ARM_L1_CACHE_SHIFT_6
 716         select ARCH_USES_GETTIMEOFFSET
 717         help
 718           Samsung S5PV210/S5PC110 series based systems
 719
 720 config ARCH_SHARK
 721         bool "Shark"
 722         select CPU_SA110
 723         select ISA
 724         select ISA_DMA
 725         select ZONE_DMA
 726         select PCI
 727         select ARCH_USES_GETTIMEOFFSET
 728         help
 729           Support for the StrongARM based Digital DNARD machine, also known
 730           as "Shark" (<http://www.shark-linux.de/shark.html>).
 731
 732 config ARCH_LH7A40X
 733         bool "Sharp LH7A40X"
 734         select CPU_ARM922T
 735         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 736         select ARCH_USES_GETTIMEOFFSET
 737         help
 738           Say Y here for systems based on one of the Sharp LH7A40X
 739           System on a Chip processors.  These CPUs include an ARM922T
 740           core with a wide array of integrated devices for
 741           hand-held and low-power applications.
 742
 743 config ARCH_U300
 744         bool "ST-Ericsson U300 Series"
 745         depends on MMU
 746         select CPU_ARM926T
 747         select HAVE_TCM
 748         select ARM_AMBA
 749         select ARM_VIC
 750         select GENERIC_CLOCKEVENTS
 751         select COMMON_CLKDEV
 752         select GENERIC_GPIO
 753         help
 754           Support for ST-Ericsson U300 series mobile platforms.
 755
 756 config ARCH_U8500
 757         bool "ST-Ericsson U8500 Series"
 758         select CPU_V7
 759         select ARM_AMBA
 760         select GENERIC_CLOCKEVENTS
 761         select COMMON_CLKDEV
 762         select ARCH_REQUIRE_GPIOLIB
 763         help
 764           Support for ST-Ericsson's Ux500 architecture
 765
 766 config ARCH_NOMADIK
 767         bool "STMicroelectronics Nomadik"
 768         select ARM_AMBA
 769         select ARM_VIC
 770         select CPU_ARM926T
 771         select COMMON_CLKDEV
 772         select GENERIC_CLOCKEVENTS
 773         select ARCH_REQUIRE_GPIOLIB
 774         help
 775           Support for the Nomadik platform by ST-Ericsson
 776
 777 config ARCH_DAVINCI
 778         bool "TI DaVinci"
 779         select GENERIC_CLOCKEVENTS
 780         select ARCH_REQUIRE_GPIOLIB
 781         select ZONE_DMA
 782         select HAVE_IDE
 783         select COMMON_CLKDEV
 784         select GENERIC_ALLOCATOR
 785         select ARCH_HAS_HOLES_MEMORYMODEL
 786         help
 787           Support for TI's DaVinci platform.
 788
 789 config ARCH_OMAP
 790         bool "TI OMAP"
 791         select HAVE_CLK
 792         select ARCH_REQUIRE_GPIOLIB
 793         select ARCH_HAS_CPUFREQ
 794         select GENERIC_CLOCKEVENTS
 795         select ARCH_HAS_HOLES_MEMORYMODEL
 796         help
 797           Support for TI's OMAP platform (OMAP1 and OMAP2).
 798
 799 config PLAT_SPEAR
 800         bool "ST SPEAr"
 801         select ARM_AMBA
 802         select ARCH_REQUIRE_GPIOLIB
 803         select COMMON_CLKDEV
 804         select GENERIC_CLOCKEVENTS
 805         select HAVE_CLK
 806         help
 807           Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
 808
 809 endchoice
 810
 811 #
 812 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 813 # Kconfigs may be included either alphabetically (according to the
 814 # plat- suffix) or along side the corresponding mach-* source.
 815 #
 816 source "arch/arm/mach-aaec2000/Kconfig"
 817
 818 source "arch/arm/mach-at91/Kconfig"
 819
 820 source "arch/arm/mach-bcmring/Kconfig"
 821
 822 source "arch/arm/mach-clps711x/Kconfig"
 823
 824 source "arch/arm/mach-cns3xxx/Kconfig"
 825
 826 source "arch/arm/mach-davinci/Kconfig"
 827
 828 source "arch/arm/mach-dove/Kconfig"
 829
 830 source "arch/arm/mach-ep93xx/Kconfig"
 831
 832 source "arch/arm/mach-footbridge/Kconfig"
 833
 834 source "arch/arm/mach-gemini/Kconfig"
 835
 836 source "arch/arm/mach-h720x/Kconfig"
 837
 838 source "arch/arm/mach-integrator/Kconfig"
 839
 840 source "arch/arm/mach-iop32x/Kconfig"
 841
 842 source "arch/arm/mach-iop33x/Kconfig"
 843
 844 source "arch/arm/mach-iop13xx/Kconfig"
 845
 846 source "arch/arm/mach-ixp4xx/Kconfig"
 847
 848 source "arch/arm/mach-ixp2000/Kconfig"
 849
 850 source "arch/arm/mach-ixp23xx/Kconfig"
 851
 852 source "arch/arm/mach-kirkwood/Kconfig"
 853
 854 source "arch/arm/mach-ks8695/Kconfig"
 855
 856 source "arch/arm/mach-lh7a40x/Kconfig"
 857
 858 source "arch/arm/mach-loki/Kconfig"
 859
 860 source "arch/arm/mach-lpc32xx/Kconfig"
 861
 862 source "arch/arm/mach-msm/Kconfig"
 863
 864 source "arch/arm/mach-mv78xx0/Kconfig"
 865
 866 source "arch/arm/plat-mxc/Kconfig"
 867
 868 source "arch/arm/mach-netx/Kconfig"
 869
 870 source "arch/arm/mach-nomadik/Kconfig"
 871 source "arch/arm/plat-nomadik/Kconfig"
 872
 873 source "arch/arm/mach-ns9xxx/Kconfig"
 874
 875 source "arch/arm/mach-nuc93x/Kconfig"
 876
 877 source "arch/arm/plat-omap/Kconfig"
 878
 879 source "arch/arm/mach-omap1/Kconfig"
 880
 881 source "arch/arm/mach-omap2/Kconfig"
 882
 883 source "arch/arm/mach-orion5x/Kconfig"
 884
 885 source "arch/arm/mach-pxa/Kconfig"
 886 source "arch/arm/plat-pxa/Kconfig"
 887
 888 source "arch/arm/mach-mmp/Kconfig"
 889
 890 source "arch/arm/mach-realview/Kconfig"
 891
 892 source "arch/arm/mach-sa1100/Kconfig"
 893
 894 source "arch/arm/plat-samsung/Kconfig"
 895 source "arch/arm/plat-s3c24xx/Kconfig"
 896 source "arch/arm/plat-s5p/Kconfig"
 897
 898 source "arch/arm/plat-spear/Kconfig"
 899
 900 if ARCH_S3C2410
 901 source "arch/arm/mach-s3c2400/Kconfig"
 902 source "arch/arm/mach-s3c2410/Kconfig"
 903 source "arch/arm/mach-s3c2412/Kconfig"
 904 source "arch/arm/mach-s3c2416/Kconfig"
 905 source "arch/arm/mach-s3c2440/Kconfig"
 906 source "arch/arm/mach-s3c2443/Kconfig"
 907 endif
 908
 909 if ARCH_S3C64XX
 910 source "arch/arm/mach-s3c64xx/Kconfig"
 911 endif
 912
 913 source "arch/arm/mach-s5p6440/Kconfig"
 914
 915 source "arch/arm/mach-s5p6442/Kconfig"
 916
 917 source "arch/arm/mach-s5pc100/Kconfig"
 918
 919 source "arch/arm/mach-s5pv210/Kconfig"
 920
 921 source "arch/arm/mach-shmobile/Kconfig"
 922
 923 source "arch/arm/plat-stmp3xxx/Kconfig"
 924
 925 source "arch/arm/mach-tegra/Kconfig"
 926
 927 source "arch/arm/mach-u300/Kconfig"
 928
 929 source "arch/arm/mach-ux500/Kconfig"
 930
 931 source "arch/arm/mach-versatile/Kconfig"
 932
 933 source "arch/arm/mach-vexpress/Kconfig"
 934
 935 source "arch/arm/mach-w90x900/Kconfig"
 936
 937 # Definitions to make life easier
 938 config ARCH_ACORN
 939         bool
 940
 941 config PLAT_IOP
 942         bool
 943         select GENERIC_CLOCKEVENTS
 944
 945 config PLAT_ORION
 946         bool
 947
 948 config PLAT_PXA
 949         bool
 950
 951 config PLAT_VERSATILE
 952         bool
 953
 954 config ARM_TIMER_SP804
 955         bool
 956
 957 source arch/arm/mm/Kconfig
 958
 959 config IWMMXT
 960         bool "Enable iWMMXt support"
 961         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 962         default y if PXA27x || PXA3xx || ARCH_MMP
 963         help
 964           Enable support for iWMMXt context switching at run time if
 965           running on a CPU that supports it.
 966
 967 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 968 config XSCALE_PMU
 969         bool
 970         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 971         default y
 972
 973 config CPU_HAS_PMU
 974         depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
 975                    (!ARCH_OMAP3 || OMAP3_EMU)
 976         default y
 977         bool
 978
 979 if !MMU
 980 source "arch/arm/Kconfig-nommu"
 981 endif
 982
 983 config ARM_ERRATA_411920
 984         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 985         depends on CPU_V6 && !SMP
 986         help
 987           Invalidation of the Instruction Cache operation can
 988           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 989           It does not affect the MPCore. This option enables the ARM Ltd.
 990           recommended workaround.
 991
 992 config ARM_ERRATA_430973
 993         bool "ARM errata: Stale prediction on replaced interworking branch"
 994         depends on CPU_V7
 995         help
 996           This option enables the workaround for the 430973 Cortex-A8
 997           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 998           interworking branch is replaced with another code sequence at the
 999           same virtual address, whether due to self-modifying code or virtual
1000           to physical address re-mapping, Cortex-A8 does not recover from the
1001           stale interworking branch prediction. This results in Cortex-A8
1002           executing the new code sequence in the incorrect ARM or Thumb state.
1003           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1004           and also flushes the branch target cache at every context switch.
1005           Note that setting specific bits in the ACTLR register may not be
1006           available in non-secure mode.
1007
1008 config ARM_ERRATA_458693
1009         bool "ARM errata: Processor deadlock when a false hazard is created"
1010         depends on CPU_V7
1011         help
1012           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1013           erratum. For very specific sequences of memory operations, it is
1014           possible for a hazard condition intended for a cache line to instead
1015           be incorrectly associated with a different cache line. This false
1016           hazard might then cause a processor deadlock. The workaround enables
1017           the L1 caching of the NEON accesses and disables the PLD instruction
1018           in the ACTLR register. Note that setting specific bits in the ACTLR
1019           register may not be available in non-secure mode.
1020
1021 config ARM_ERRATA_460075
1022         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1023         depends on CPU_V7
1024         help
1025           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1026           erratum. Any asynchronous access to the L2 cache may encounter a
1027           situation in which recent store transactions to the L2 cache are lost
1028           and overwritten with stale memory contents from external memory. The
1029           workaround disables the write-allocate mode for the L2 cache via the
1030           ACTLR register. Note that setting specific bits in the ACTLR register
1031           may not be available in non-secure mode.
1032
1033 config PL310_ERRATA_588369
1034         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1035         depends on CACHE_L2X0 && ARCH_OMAP4
1036         help
1037            The PL310 L2 cache controller implements three types of Clean &
1038            Invalidate maintenance operations: by Physical Address
1039            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1040            They are architecturally defined to behave as the execution of a
1041            clean operation followed immediately by an invalidate operation,
1042            both performing to the same memory location. This functionality
1043            is not correctly implemented in PL310 as clean lines are not
1044            invalidated as a result of these operations. Note that this errata
1045            uses Texas Instrument's secure monitor api.
1046 endmenu
1047
1048 source "arch/arm/common/Kconfig"
1049
1050 menu "Bus support"
1051
1052 config ARM_AMBA
1053         bool
1054
1055 config ISA
1056         bool
1057         help
1058           Find out whether you have ISA slots on your motherboard.  ISA is the
1059           name of a bus system, i.e. the way the CPU talks to the other stuff
1060           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1061           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1062           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1063
1064 # Select ISA DMA controller support
1065 config ISA_DMA
1066         bool
1067         select ISA_DMA_API
1068
1069 # Select ISA DMA interface
1070 config ISA_DMA_API
1071         bool
1072
1073 config PCI
1074         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1075         help
1076           Find out whether you have a PCI motherboard. PCI is the name of a
1077           bus system, i.e. the way the CPU talks to the other stuff inside
1078           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1079           VESA. If you have PCI, say Y, otherwise N.
1080
1081 config PCI_DOMAINS
1082         bool
1083         depends on PCI
1084
1085 config PCI_SYSCALL
1086         def_bool PCI
1087
1088 # Select the host bridge type
1089 config PCI_HOST_VIA82C505
1090         bool
1091         depends on PCI && ARCH_SHARK
1092         default y
1093
1094 config PCI_HOST_ITE8152
1095         bool
1096         depends on PCI && MACH_ARMCORE
1097         default y
1098         select DMABOUNCE
1099
1100 source "drivers/pci/Kconfig"
1101
1102 source "drivers/pcmcia/Kconfig"
1103
1104 endmenu
1105
1106 menu "Kernel Features"
1107
1108 source "kernel/time/Kconfig"
1109
1110 config SMP
1111         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1112         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1113                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1114                  ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1115         depends on GENERIC_CLOCKEVENTS
1116         select USE_GENERIC_SMP_HELPERS
1117         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1118         help
1119           This enables support for systems with more than one CPU. If you have
1120           a system with only one CPU, like most personal computers, say N. If
1121           you have a system with more than one CPU, say Y.
1122
1123           If you say N here, the kernel will run on single and multiprocessor
1124           machines, but will use only one CPU of a multiprocessor machine. If
1125           you say Y here, the kernel will run on many, but not all, single
1126           processor machines. On a single processor machine, the kernel will
1127           run faster if you say N here.
1128
1129           See also <file:Documentation/i386/IO-APIC.txt>,
1130           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1131           <http://www.linuxdoc.org/docs.html#howto>.
1132
1133           If you don't know what to do here, say N.
1134
1135 config HAVE_ARM_SCU
1136         bool
1137         depends on SMP
1138         help
1139           This option enables support for the ARM system coherency unit
1140
1141 config HAVE_ARM_TWD
1142         bool
1143         depends on SMP
1144         help
1145           This options enables support for the ARM timer and watchdog unit
1146
1147 choice
1148         prompt "Memory split"
1149         default VMSPLIT_3G
1150         help
1151           Select the desired split between kernel and user memory.
1152
1153           If you are not absolutely sure what you are doing, leave this
1154           option alone!
1155
1156         config VMSPLIT_3G
1157                 bool "3G/1G user/kernel split"
1158         config VMSPLIT_2G
1159                 bool "2G/2G user/kernel split"
1160         config VMSPLIT_1G
1161                 bool "1G/3G user/kernel split"
1162 endchoice
1163
1164 config PAGE_OFFSET
1165         hex
1166         default 0x40000000 if VMSPLIT_1G
1167         default 0x80000000 if VMSPLIT_2G
1168         default 0xC0000000
1169
1170 config NR_CPUS
1171         int "Maximum number of CPUs (2-32)"
1172         range 2 32
1173         depends on SMP
1174         default "4"
1175
1176 config HOTPLUG_CPU
1177         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1178         depends on SMP && HOTPLUG && EXPERIMENTAL
1179         help
1180           Say Y here to experiment with turning CPUs off and on.  CPUs
1181           can be controlled through /sys/devices/system/cpu.
1182
1183 config LOCAL_TIMERS
1184         bool "Use local timer interrupts"
1185         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1186                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1187                 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1188         default y
1189         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || ARCH_U8500)
1190         help
1191           Enable support for local timers on SMP platforms, rather then the
1192           legacy IPI broadcast method.  Local timers allows the system
1193           accounting to be spread across the timer interval, preventing a
1194           "thundering herd" at every timer tick.
1195
1196 source kernel/Kconfig.preempt
1197
1198 config HZ
1199         int
1200         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1201         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1202         default AT91_TIMER_HZ if ARCH_AT91
1203         default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1204         default 100
1205
1206 config THUMB2_KERNEL
1207         bool "Compile the kernel in Thumb-2 mode"
1208         depends on CPU_V7 && EXPERIMENTAL
1209         select AEABI
1210         select ARM_ASM_UNIFIED
1211         help
1212           By enabling this option, the kernel will be compiled in
1213           Thumb-2 mode. A compiler/assembler that understand the unified
1214           ARM-Thumb syntax is needed.
1215
1216           If unsure, say N.
1217
1218 config ARM_ASM_UNIFIED
1219         bool
1220
1221 config AEABI
1222         bool "Use the ARM EABI to compile the kernel"
1223         help
1224           This option allows for the kernel to be compiled using the latest
1225           ARM ABI (aka EABI).  This is only useful if you are using a user
1226           space environment that is also compiled with EABI.
1227
1228           Since there are major incompatibilities between the legacy ABI and
1229           EABI, especially with regard to structure member alignment, this
1230           option also changes the kernel syscall calling convention to
1231           disambiguate both ABIs and allow for backward compatibility support
1232           (selected with CONFIG_OABI_COMPAT).
1233
1234           To use this you need GCC version 4.0.0 or later.
1235
1236 config OABI_COMPAT
1237         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1238         depends on AEABI && EXPERIMENTAL
1239         default y
1240         help
1241           This option preserves the old syscall interface along with the
1242           new (ARM EABI) one. It also provides a compatibility layer to
1243           intercept syscalls that have structure arguments which layout
1244           in memory differs between the legacy ABI and the new ARM EABI
1245           (only for non "thumb" binaries). This option adds a tiny
1246           overhead to all syscalls and produces a slightly larger kernel.
1247           If you know you'll be using only pure EABI user space then you
1248           can say N here. If this option is not selected and you attempt
1249           to execute a legacy ABI binary then the result will be
1250           UNPREDICTABLE (in fact it can be predicted that it won't work
1251           at all). If in doubt say Y.
1252
1253 config ARCH_HAS_HOLES_MEMORYMODEL
1254         bool
1255
1256 config ARCH_SPARSEMEM_ENABLE
1257         bool
1258
1259 config ARCH_SPARSEMEM_DEFAULT
1260         def_bool ARCH_SPARSEMEM_ENABLE
1261
1262 config ARCH_SELECT_MEMORY_MODEL
1263         def_bool ARCH_SPARSEMEM_ENABLE
1264
1265 config HIGHMEM
1266         bool "High Memory Support (EXPERIMENTAL)"
1267         depends on MMU && EXPERIMENTAL
1268         help
1269           The address space of ARM processors is only 4 Gigabytes large
1270           and it has to accommodate user address space, kernel address
1271           space as well as some memory mapped IO. That means that, if you
1272           have a large amount of physical memory and/or IO, not all of the
1273           memory can be "permanently mapped" by the kernel. The physical
1274           memory that is not permanently mapped is called "high memory".
1275
1276           Depending on the selected kernel/user memory split, minimum
1277           vmalloc space and actual amount of RAM, you may not need this
1278           option which should result in a slightly faster kernel.
1279
1280           If unsure, say n.
1281
1282 config HIGHPTE
1283         bool "Allocate 2nd-level pagetables from highmem"
1284         depends on HIGHMEM
1285         depends on !OUTER_CACHE
1286
1287 config HW_PERF_EVENTS
1288         bool "Enable hardware performance counter support for perf events"
1289         depends on PERF_EVENTS && CPU_HAS_PMU
1290         default y
1291         help
1292           Enable hardware performance counter support for perf events. If
1293           disabled, perf events will use software events only.
1294
1295 config SPARSE_IRQ
1296         def_bool n
1297         help
1298           This enables support for sparse irqs. This is useful in general
1299           as most CPUs have a fairly sparse array of IRQ vectors, which
1300           the irq_desc then maps directly on to. Systems with a high
1301           number of off-chip IRQs will want to treat this as
1302           experimental until they have been independently verified.
1303
1304 source "mm/Kconfig"
1305
1306 config FORCE_MAX_ZONEORDER
1307         int "Maximum zone order" if ARCH_SHMOBILE
1308         range 11 64 if ARCH_SHMOBILE
1309         default "9" if SA1111
1310         default "11"
1311         help
1312           The kernel memory allocator divides physically contiguous memory
1313           blocks into "zones", where each zone is a power of two number of
1314           pages.  This option selects the largest power of two that the kernel
1315           keeps in the memory allocator.  If you need to allocate very large
1316           blocks of physically contiguous memory, then you may need to
1317           increase this value.
1318
1319           This config option is actually maximum order plus one. For example,
1320           a value of 11 means that the largest free memory block is 2^10 pages.
1321
1322 config LEDS
1323         bool "Timer and CPU usage LEDs"
1324         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1325                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1326                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1327                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1328                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1329                    ARCH_AT91 || ARCH_DAVINCI || \
1330                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1331         help
1332           If you say Y here, the LEDs on your machine will be used
1333           to provide useful information about your current system status.
1334
1335           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1336           be able to select which LEDs are active using the options below. If
1337           you are compiling a kernel for the EBSA-110 or the LART however, the
1338           red LED will simply flash regularly to indicate that the system is
1339           still functional. It is safe to say Y here if you have a CATS
1340           system, but the driver will do nothing.
1341
1342 config LEDS_TIMER
1343         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1344                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1345                             || MACH_OMAP_PERSEUS2
1346         depends on LEDS
1347         depends on !GENERIC_CLOCKEVENTS
1348         default y if ARCH_EBSA110
1349         help
1350           If you say Y here, one of the system LEDs (the green one on the
1351           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1352           will flash regularly to indicate that the system is still
1353           operational. This is mainly useful to kernel hackers who are
1354           debugging unstable kernels.
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 LEDS_CPU
1361         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1362                         !ARCH_OMAP) \
1363                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1364                         || MACH_OMAP_PERSEUS2
1365         depends on LEDS
1366         help
1367           If you say Y here, the red LED will be used to give a good real
1368           time indication of CPU usage, by lighting whenever the idle task
1369           is not currently executing.
1370
1371           The LART uses the same LED for both Timer LED and CPU usage LED
1372           functions. You may choose to use both, but the Timer LED function
1373           will overrule the CPU usage LED.
1374
1375 config ALIGNMENT_TRAP
1376         bool
1377         depends on CPU_CP15_MMU
1378         default y if !ARCH_EBSA110
1379         select HAVE_PROC_CPU if PROC_FS
1380         help
1381           ARM processors cannot fetch/store information which is not
1382           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1383           address divisible by 4. On 32-bit ARM processors, these non-aligned
1384           fetch/store instructions will be emulated in software if you say
1385           here, which has a severe performance impact. This is necessary for
1386           correct operation of some network protocols. With an IP-only
1387           configuration it is safe to say N, otherwise say Y.
1388
1389 config UACCESS_WITH_MEMCPY
1390         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1391         depends on MMU && EXPERIMENTAL
1392         default y if CPU_FEROCEON
1393         help
1394           Implement faster copy_to_user and clear_user methods for CPU
1395           cores where a 8-word STM instruction give significantly higher
1396           memory write throughput than a sequence of individual 32bit stores.
1397
1398           A possible side effect is a slight increase in scheduling latency
1399           between threads sharing the same address space if they invoke
1400           such copy operations with large buffers.
1401
1402           However, if the CPU data cache is using a write-allocate mode,
1403           this option is unlikely to provide any performance gain.
1404
1405 config CC_STACKPROTECTOR
1406         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1407         help
1408           This option turns on the -fstack-protector GCC feature. This
1409           feature puts, at the beginning of functions, a canary value on
1410           the stack just before the return address, and validates
1411           the value just before actually returning.  Stack based buffer
1412           overflows (that need to overwrite this return address) now also
1413           overwrite the canary, which gets detected and the attack is then
1414           neutralized via a kernel panic.
1415           This feature requires gcc version 4.2 or above.
1416
1417 config DEPRECATED_PARAM_STRUCT
1418         bool "Provide old way to pass kernel parameters"
1419         help
1420           This was deprecated in 2001 and announced to live on for 5 years.
1421           Some old boot loaders still use this way.
1422
1423 endmenu
1424
1425 menu "Boot options"
1426
1427 # Compressed boot loader in ROM.  Yes, we really want to ask about
1428 # TEXT and BSS so we preserve their values in the config files.
1429 config ZBOOT_ROM_TEXT
1430         hex "Compressed ROM boot loader base address"
1431         default "0"
1432         help
1433           The physical address at which the ROM-able zImage is to be
1434           placed in the target.  Platforms which normally make use of
1435           ROM-able zImage formats normally set this to a suitable
1436           value in their defconfig file.
1437
1438           If ZBOOT_ROM is not enabled, this has no effect.
1439
1440 config ZBOOT_ROM_BSS
1441         hex "Compressed ROM boot loader BSS address"
1442         default "0"
1443         help
1444           The base address of an area of read/write memory in the target
1445           for the ROM-able zImage which must be available while the
1446           decompressor is running. It must be large enough to hold the
1447           entire decompressed kernel plus an additional 128 KiB.
1448           Platforms which normally make use of ROM-able zImage formats
1449           normally set this to a suitable value in their defconfig file.
1450
1451           If ZBOOT_ROM is not enabled, this has no effect.
1452
1453 config ZBOOT_ROM
1454         bool "Compressed boot loader in ROM/flash"
1455         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1456         help
1457           Say Y here if you intend to execute your compressed kernel image
1458           (zImage) directly from ROM or flash.  If unsure, say N.
1459
1460 config CMDLINE
1461         string "Default kernel command string"
1462         default ""
1463         help
1464           On some architectures (EBSA110 and CATS), there is currently no way
1465           for the boot loader to pass arguments to the kernel. For these
1466           architectures, you should supply some command-line options at build
1467           time by entering them here. As a minimum, you should specify the
1468           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1469
1470 config CMDLINE_FORCE
1471         bool "Always use the default kernel command string"
1472         depends on CMDLINE != ""
1473         help
1474           Always use the default kernel command string, even if the boot
1475           loader passes other arguments to the kernel.
1476           This is useful if you cannot or don't want to change the
1477           command-line options your boot loader passes to the kernel.
1478
1479           If unsure, say N.
1480
1481 config XIP_KERNEL
1482         bool "Kernel Execute-In-Place from ROM"
1483         depends on !ZBOOT_ROM
1484         help
1485           Execute-In-Place allows the kernel to run from non-volatile storage
1486           directly addressable by the CPU, such as NOR flash. This saves RAM
1487           space since the text section of the kernel is not loaded from flash
1488           to RAM.  Read-write sections, such as the data section and stack,
1489           are still copied to RAM.  The XIP kernel is not compressed since
1490           it has to run directly from flash, so it will take more space to
1491           store it.  The flash address used to link the kernel object files,
1492           and for storing it, is configuration dependent. Therefore, if you
1493           say Y here, you must know the proper physical address where to
1494           store the kernel image depending on your own flash memory usage.
1495
1496           Also note that the make target becomes "make xipImage" rather than
1497           "make zImage" or "make Image".  The final kernel binary to put in
1498           ROM memory will be arch/arm/boot/xipImage.
1499
1500           If unsure, say N.
1501
1502 config XIP_PHYS_ADDR
1503         hex "XIP Kernel Physical Location"
1504         depends on XIP_KERNEL
1505         default "0x00080000"
1506         help
1507           This is the physical address in your flash memory the kernel will
1508           be linked for and stored to.  This address is dependent on your
1509           own flash usage.
1510
1511 config KEXEC
1512         bool "Kexec system call (EXPERIMENTAL)"
1513         depends on EXPERIMENTAL
1514         help
1515           kexec is a system call that implements the ability to shutdown your
1516           current kernel, and to start another kernel.  It is like a reboot
1517           but it is independent of the system firmware.   And like a reboot
1518           you can start any kernel with it, not just Linux.
1519
1520           It is an ongoing process to be certain the hardware in a machine
1521           is properly shutdown, so do not be surprised if this code does not
1522           initially work for you.  It may help to enable device hotplugging
1523           support.
1524
1525 config ATAGS_PROC
1526         bool "Export atags in procfs"
1527         depends on KEXEC
1528         default y
1529         help
1530           Should the atags used to boot the kernel be exported in an "atags"
1531           file in procfs. Useful with kexec.
1532
1533 config AUTO_ZRELADDR
1534         bool "Auto calculation of the decompressed kernel image address"
1535         depends on !ZBOOT_ROM && !ARCH_U300
1536         help
1537           ZRELADDR is the physical address where the decompressed kernel
1538           image will be placed. If AUTO_ZRELADDR is selected, the address
1539           will be determined at run-time by masking the current IP with
1540           0xf8000000. This assumes the zImage being placed in the first 128MB
1541           from start of memory.
1542
1543 config ZRELADDR
1544         hex "Physical address of the decompressed kernel image"
1545         depends on !AUTO_ZRELADDR
1546         default 0x00008000 if ARCH_BCMRING ||\
1547                 ARCH_CNS3XXX ||\
1548                 ARCH_DOVE ||\
1549                 ARCH_EBSA110 ||\
1550                 ARCH_FOOTBRIDGE ||\
1551                 ARCH_INTEGRATOR ||\
1552                 ARCH_IOP13XX ||\
1553                 ARCH_IOP33X ||\
1554                 ARCH_IXP2000 ||\
1555                 ARCH_IXP23XX ||\
1556                 ARCH_IXP4XX ||\
1557                 ARCH_KIRKWOOD ||\
1558                 ARCH_KS8695 ||\
1559                 ARCH_LOKI ||\
1560                 ARCH_MMP ||\
1561                 ARCH_MV78XX0 ||\
1562                 ARCH_NOMADIK ||\
1563                 ARCH_NUC93X ||\
1564                 ARCH_NS9XXX ||\
1565                 ARCH_ORION5X ||\
1566                 ARCH_SPEAR3XX ||\
1567                 ARCH_SPEAR6XX ||\
1568                 ARCH_U8500 ||\
1569                 ARCH_VERSATILE ||\
1570                 ARCH_W90X900
1571         default 0x08008000 if ARCH_MX1 ||\
1572                 ARCH_SHARK
1573         default 0x10008000 if ARCH_MSM ||\
1574                 ARCH_OMAP1 ||\
1575                 ARCH_RPC
1576         default 0x20008000 if ARCH_S5P6440 ||\
1577                 ARCH_S5P6442 ||\
1578                 ARCH_S5PC100 ||\
1579                 ARCH_S5PV210
1580         default 0x30008000 if ARCH_S3C2410 ||\
1581                 ARCH_S3C2400 ||\
1582                 ARCH_S3C2412 ||\
1583                 ARCH_S3C2416 ||\
1584                 ARCH_S3C2440 ||\
1585                 ARCH_S3C2443
1586         default 0x40008000 if ARCH_STMP378X ||\
1587                 ARCH_STMP37XX ||\
1588                 ARCH_SH7372 ||\
1589                 ARCH_SH7377
1590         default 0x50008000 if ARCH_S3C64XX ||\
1591                 ARCH_SH7367
1592         default 0x60008000 if ARCH_VEXPRESS
1593         default 0x80008000 if ARCH_MX25 ||\
1594                 ARCH_MX3 ||\
1595                 ARCH_NETX ||\
1596                 ARCH_OMAP2PLUS ||\
1597                 ARCH_PNX4008
1598         default 0x90008000 if ARCH_MX5 ||\
1599                 ARCH_MX91231
1600         default 0xa0008000 if ARCH_IOP32X ||\
1601                 ARCH_PXA ||\
1602                 MACH_MX27
1603         default 0xc0008000 if ARCH_LH7A40X ||\
1604                 MACH_MX21
1605         default 0xf0008000 if ARCH_AAEC2000 ||\
1606                 ARCH_L7200
1607         default 0xc0028000 if ARCH_CLPS711X
1608         default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1609         default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1610         default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1611         default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1612         default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1613         default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1614         default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1615         default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1616         default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1617         default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1618         default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1619         default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1620         default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1621         default 0xc0208000 if ARCH_SA1100 && SA1111
1622         default 0xc0008000 if ARCH_SA1100 && !SA1111
1623         default 0x30108000 if ARCH_S3C2410 && PM_H1940
1624         default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1625         default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1626         help
1627           ZRELADDR is the physical address where the decompressed kernel
1628           image will be placed. ZRELADDR has to be specified when the
1629           assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1630           selected.
1631
1632 endmenu
1633
1634 menu "CPU Power Management"
1635
1636 if ARCH_HAS_CPUFREQ
1637
1638 source "drivers/cpufreq/Kconfig"
1639
1640 config CPU_FREQ_SA1100
1641         bool
1642
1643 config CPU_FREQ_SA1110
1644         bool
1645
1646 config CPU_FREQ_INTEGRATOR
1647         tristate "CPUfreq driver for ARM Integrator CPUs"
1648         depends on ARCH_INTEGRATOR && CPU_FREQ
1649         default y
1650         help
1651           This enables the CPUfreq driver for ARM Integrator CPUs.
1652
1653           For details, take a look at <file:Documentation/cpu-freq>.
1654
1655           If in doubt, say Y.
1656
1657 config CPU_FREQ_PXA
1658         bool
1659         depends on CPU_FREQ && ARCH_PXA && PXA25x
1660         default y
1661         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1662
1663 config CPU_FREQ_S3C64XX
1664         bool "CPUfreq support for Samsung S3C64XX CPUs"
1665         depends on CPU_FREQ && CPU_S3C6410
1666
1667 config CPU_FREQ_S3C
1668         bool
1669         help
1670           Internal configuration node for common cpufreq on Samsung SoC
1671
1672 config CPU_FREQ_S3C24XX
1673         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1674         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1675         select CPU_FREQ_S3C
1676         help
1677           This enables the CPUfreq driver for the Samsung S3C24XX family
1678           of CPUs.
1679
1680           For details, take a look at <file:Documentation/cpu-freq>.
1681
1682           If in doubt, say N.
1683
1684 config CPU_FREQ_S3C24XX_PLL
1685         bool "Support CPUfreq changing of PLL frequency"
1686         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1687         help
1688           Compile in support for changing the PLL frequency from the
1689           S3C24XX series CPUfreq driver. The PLL takes time to settle
1690           after a frequency change, so by default it is not enabled.
1691
1692           This also means that the PLL tables for the selected CPU(s) will
1693           be built which may increase the size of the kernel image.
1694
1695 config CPU_FREQ_S3C24XX_DEBUG
1696         bool "Debug CPUfreq Samsung driver core"
1697         depends on CPU_FREQ_S3C24XX
1698         help
1699           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1700
1701 config CPU_FREQ_S3C24XX_IODEBUG
1702         bool "Debug CPUfreq Samsung driver IO timing"
1703         depends on CPU_FREQ_S3C24XX
1704         help
1705           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1706
1707 config CPU_FREQ_S3C24XX_DEBUGFS
1708         bool "Export debugfs for CPUFreq"
1709         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1710         help
1711           Export status information via debugfs.
1712
1713 endif
1714
1715 source "drivers/cpuidle/Kconfig"
1716
1717 endmenu
1718
1719 menu "Floating point emulation"
1720
1721 comment "At least one emulation must be selected"
1722
1723 config FPE_NWFPE
1724         bool "NWFPE math emulation"
1725         depends on !AEABI || OABI_COMPAT
1726         ---help---
1727           Say Y to include the NWFPE floating point emulator in the kernel.
1728           This is necessary to run most binaries. Linux does not currently
1729           support floating point hardware so you need to say Y here even if
1730           your machine has an FPA or floating point co-processor podule.
1731
1732           You may say N here if you are going to load the Acorn FPEmulator
1733           early in the bootup.
1734
1735 config FPE_NWFPE_XP
1736         bool "Support extended precision"
1737         depends on FPE_NWFPE
1738         help
1739           Say Y to include 80-bit support in the kernel floating-point
1740           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1741           Note that gcc does not generate 80-bit operations by default,
1742           so in most cases this option only enlarges the size of the
1743           floating point emulator without any good reason.
1744
1745           You almost surely want to say N here.
1746
1747 config FPE_FASTFPE
1748         bool "FastFPE math emulation (EXPERIMENTAL)"
1749         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1750         ---help---
1751           Say Y here to include the FAST floating point emulator in the kernel.
1752           This is an experimental much faster emulator which now also has full
1753           precision for the mantissa.  It does not support any exceptions.
1754           It is very simple, and approximately 3-6 times faster than NWFPE.
1755
1756           It should be sufficient for most programs.  It may be not suitable
1757           for scientific calculations, but you have to check this for yourself.
1758           If you do not feel you need a faster FP emulation you should better
1759           choose NWFPE.
1760
1761 config VFP
1762         bool "VFP-format floating point maths"
1763         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1764         help
1765           Say Y to include VFP support code in the kernel. This is needed
1766           if your hardware includes a VFP unit.
1767
1768           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1769           release notes and additional status information.
1770
1771           Say N if your target does not have VFP hardware.
1772
1773 config VFPv3
1774         bool
1775         depends on VFP
1776         default y if CPU_V7
1777
1778 config NEON
1779         bool "Advanced SIMD (NEON) Extension support"
1780         depends on VFPv3 && CPU_V7
1781         help
1782           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1783           Extension.
1784
1785 endmenu
1786
1787 menu "Userspace binary formats"
1788
1789 source "fs/Kconfig.binfmt"
1790
1791 config ARTHUR
1792         tristate "RISC OS personality"
1793         depends on !AEABI
1794         help
1795           Say Y here to include the kernel code necessary if you want to run
1796           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1797           experimental; if this sounds frightening, say N and sleep in peace.
1798           You can also say M here to compile this support as a module (which
1799           will be called arthur).
1800
1801 endmenu
1802
1803 menu "Power management options"
1804
1805 source "kernel/power/Kconfig"
1806
1807 config ARCH_SUSPEND_POSSIBLE
1808         def_bool y
1809
1810 endmenu
1811
1812 source "net/Kconfig"
1813
1814 source "drivers/Kconfig"
1815
1816 source "fs/Kconfig"
1817
1818 source "arch/arm/Kconfig.debug"
1819
1820 source "security/Kconfig"
1821
1822 source "crypto/Kconfig"
1823
1824 source "lib/Kconfig"