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
  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_PERF_EVENTS
  25         select PERF_USE_VMALLOC
  26         help
  27           The ARM series is a line of low-power-consumption RISC chip designs
  28           licensed by ARM Ltd and targeted at embedded applications and
  29           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  30           manufactured, but legacy ARM-based PC hardware remains popular in
  31           Europe.  There is an ARM Linux project with a web page at
  32           <http://www.arm.linux.org.uk/>.
  33
  34 config HAVE_PWM
  35         bool
  36
  37 config SYS_SUPPORTS_APM_EMULATION
  38         bool
  39
  40 config GENERIC_GPIO
  41         bool
  42
  43 config GENERIC_TIME
  44         bool
  45
  46 config GENERIC_CLOCKEVENTS
  47         bool
  48
  49 config GENERIC_CLOCKEVENTS_BROADCAST
  50         bool
  51         depends on GENERIC_CLOCKEVENTS
  52         default y if SMP && !LOCAL_TIMERS
  53
  54 config HAVE_TCM
  55         bool
  56         select GENERIC_ALLOCATOR
  57
  58 config HAVE_PROC_CPU
  59         bool
  60
  61 config NO_IOPORT
  62         bool
  63
  64 config EISA
  65         bool
  66         ---help---
  67           The Extended Industry Standard Architecture (EISA) bus was
  68           developed as an open alternative to the IBM MicroChannel bus.
  69
  70           The EISA bus provided some of the features of the IBM MicroChannel
  71           bus while maintaining backward compatibility with cards made for
  72           the older ISA bus.  The EISA bus saw limited use between 1988 and
  73           1995 when it was made obsolete by the PCI bus.
  74
  75           Say Y here if you are building a kernel for an EISA-based machine.
  76
  77           Otherwise, say N.
  78
  79 config SBUS
  80         bool
  81
  82 config MCA
  83         bool
  84         help
  85           MicroChannel Architecture is found in some IBM PS/2 machines and
  86           laptops.  It is a bus system similar to PCI or ISA. See
  87           <file:Documentation/mca.txt> (and especially the web page given
  88           there) before attempting to build an MCA bus kernel.
  89
  90 config GENERIC_HARDIRQS
  91         bool
  92         default y
  93
  94 config STACKTRACE_SUPPORT
  95         bool
  96         default y
  97
  98 config HAVE_LATENCYTOP_SUPPORT
  99         bool
 100         depends on !SMP
 101         default y
 102
 103 config LOCKDEP_SUPPORT
 104         bool
 105         default y
 106
 107 config TRACE_IRQFLAGS_SUPPORT
 108         bool
 109         default y
 110
 111 config HARDIRQS_SW_RESEND
 112         bool
 113         default y
 114
 115 config GENERIC_IRQ_PROBE
 116         bool
 117         default y
 118
 119 config GENERIC_LOCKBREAK
 120         bool
 121         default y
 122         depends on SMP && PREEMPT
 123
 124 config RWSEM_GENERIC_SPINLOCK
 125         bool
 126         default y
 127
 128 config RWSEM_XCHGADD_ALGORITHM
 129         bool
 130
 131 config ARCH_HAS_ILOG2_U32
 132         bool
 133
 134 config ARCH_HAS_ILOG2_U64
 135         bool
 136
 137 config ARCH_HAS_CPUFREQ
 138         bool
 139         help
 140           Internal node to signify that the ARCH has CPUFREQ support
 141           and that the relevant menu configurations are displayed for
 142           it.
 143
 144 config GENERIC_HWEIGHT
 145         bool
 146         default y
 147
 148 config GENERIC_CALIBRATE_DELAY
 149         bool
 150         default y
 151
 152 config ARCH_MAY_HAVE_PC_FDC
 153         bool
 154
 155 config ZONE_DMA
 156         bool
 157
 158 config NEED_DMA_MAP_STATE
 159        def_bool y
 160
 161 config GENERIC_ISA_DMA
 162         bool
 163
 164 config FIQ
 165         bool
 166
 167 config ARCH_MTD_XIP
 168         bool
 169
 170 config GENERIC_HARDIRQS_NO__DO_IRQ
 171         def_bool y
 172
 173 config ARM_L1_CACHE_SHIFT_6
 174         bool
 175         help
 176           Setting ARM L1 cache line size to 64 Bytes.
 177
 178 if OPROFILE
 179
 180 config OPROFILE_ARMV6
 181         def_bool y
 182         depends on CPU_V6 && !SMP
 183         select OPROFILE_ARM11_CORE
 184
 185 config OPROFILE_MPCORE
 186         def_bool y
 187         depends on CPU_V6 && SMP
 188         select OPROFILE_ARM11_CORE
 189
 190 config OPROFILE_ARM11_CORE
 191         bool
 192
 193 config OPROFILE_ARMV7
 194         def_bool y
 195         depends on CPU_V7 && !SMP
 196         bool
 197
 198 endif
 199
 200 config VECTORS_BASE
 201         hex
 202         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 203         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 204         default 0x00000000
 205         help
 206           The base address of exception vectors.
 207
 208 source "init/Kconfig"
 209
 210 source "kernel/Kconfig.freezer"
 211
 212 menu "System Type"
 213
 214 config MMU
 215         bool "MMU-based Paged Memory Management Support"
 216         default y
 217         help
 218           Select if you want MMU-based virtualised addressing space
 219           support by paged memory management. If unsure, say 'Y'.
 220
 221 #
 222 # The "ARM system type" choice list is ordered alphabetically by option
 223 # text.  Please add new entries in the option alphabetic order.
 224 #
 225 choice
 226         prompt "ARM system type"
 227         default ARCH_VERSATILE
 228
 229 config ARCH_AAEC2000
 230         bool "Agilent AAEC-2000 based"
 231         select CPU_ARM920T
 232         select ARM_AMBA
 233         select HAVE_CLK
 234         help
 235           This enables support for systems based on the Agilent AAEC-2000
 236
 237 config ARCH_INTEGRATOR
 238         bool "ARM Ltd. Integrator family"
 239         select ARM_AMBA
 240         select ARCH_HAS_CPUFREQ
 241         select HAVE_CLK
 242         select COMMON_CLKDEV
 243         select ICST
 244         select GENERIC_TIME
 245         select GENERIC_CLOCKEVENTS
 246         select PLAT_VERSATILE
 247         help
 248           Support for ARM's Integrator platform.
 249
 250 config ARCH_REALVIEW
 251         bool "ARM Ltd. RealView family"
 252         select ARM_AMBA
 253         select HAVE_CLK
 254         select COMMON_CLKDEV
 255         select ICST
 256         select GENERIC_TIME
 257         select GENERIC_CLOCKEVENTS
 258         select ARCH_WANT_OPTIONAL_GPIOLIB
 259         select PLAT_VERSATILE
 260         select ARM_TIMER_SP804
 261         help
 262           This enables support for ARM Ltd RealView boards.
 263
 264 config ARCH_VERSATILE
 265         bool "ARM Ltd. Versatile family"
 266         select ARM_AMBA
 267         select ARM_VIC
 268         select HAVE_CLK
 269         select COMMON_CLKDEV
 270         select ICST
 271         select GENERIC_TIME
 272         select GENERIC_CLOCKEVENTS
 273         select ARCH_WANT_OPTIONAL_GPIOLIB
 274         select PLAT_VERSATILE
 275         select ARM_TIMER_SP804
 276         help
 277           This enables support for ARM Ltd Versatile board.
 278
 279 config ARCH_VEXPRESS
 280         bool "ARM Ltd. Versatile Express family"
 281         select ARCH_WANT_OPTIONAL_GPIOLIB
 282         select ARM_AMBA
 283         select ARM_TIMER_SP804
 284         select COMMON_CLKDEV
 285         select GENERIC_CLOCKEVENTS
 286         select GENERIC_TIME
 287         select HAVE_CLK
 288         select ICST
 289         select PLAT_VERSATILE
 290         help
 291           This enables support for the ARM Ltd Versatile Express boards.
 292
 293 config ARCH_AT91
 294         bool "Atmel AT91"
 295         select GENERIC_GPIO
 296         select ARCH_REQUIRE_GPIOLIB
 297         select HAVE_CLK
 298         help
 299           This enables support for systems based on the Atmel AT91RM9200,
 300           AT91SAM9 and AT91CAP9 processors.
 301
 302 config ARCH_BCMRING
 303         bool "Broadcom BCMRING"
 304         depends on MMU
 305         select CPU_V6
 306         select ARM_AMBA
 307         select COMMON_CLKDEV
 308         select GENERIC_TIME
 309         select GENERIC_CLOCKEVENTS
 310         select ARCH_WANT_OPTIONAL_GPIOLIB
 311         help
 312           Support for Broadcom's BCMRing platform.
 313
 314 config ARCH_CLPS711X
 315         bool "Cirrus Logic CLPS711x/EP721x-based"
 316         select CPU_ARM720T
 317         help
 318           Support for Cirrus Logic 711x/721x based boards.
 319
 320 config ARCH_GEMINI
 321         bool "Cortina Systems Gemini"
 322         select CPU_FA526
 323         select GENERIC_GPIO
 324         select ARCH_REQUIRE_GPIOLIB
 325         help
 326           Support for the Cortina Systems Gemini family SoCs
 327
 328 config ARCH_EBSA110
 329         bool "EBSA-110"
 330         select CPU_SA110
 331         select ISA
 332         select NO_IOPORT
 333         help
 334           This is an evaluation board for the StrongARM processor available
 335           from Digital. It has limited hardware on-board, including an
 336           Ethernet interface, two PCMCIA sockets, two serial ports and a
 337           parallel port.
 338
 339 config ARCH_EP93XX
 340         bool "EP93xx-based"
 341         select CPU_ARM920T
 342         select ARM_AMBA
 343         select ARM_VIC
 344         select GENERIC_GPIO
 345         select HAVE_CLK
 346         select COMMON_CLKDEV
 347         select ARCH_REQUIRE_GPIOLIB
 348         select ARCH_HAS_HOLES_MEMORYMODEL
 349         help
 350           This enables support for the Cirrus EP93xx series of CPUs.
 351
 352 config ARCH_FOOTBRIDGE
 353         bool "FootBridge"
 354         select CPU_SA110
 355         select FOOTBRIDGE
 356         help
 357           Support for systems based on the DC21285 companion chip
 358           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 359
 360 config ARCH_MXC
 361         bool "Freescale MXC/iMX-based"
 362         select GENERIC_TIME
 363         select GENERIC_CLOCKEVENTS
 364         select ARCH_REQUIRE_GPIOLIB
 365         select HAVE_CLK
 366         select COMMON_CLKDEV
 367         help
 368           Support for Freescale MXC/iMX-based family of processors
 369
 370 config ARCH_STMP3XXX
 371         bool "Freescale STMP3xxx"
 372         select CPU_ARM926T
 373         select HAVE_CLK
 374         select COMMON_CLKDEV
 375         select ARCH_REQUIRE_GPIOLIB
 376         select GENERIC_TIME
 377         select GENERIC_CLOCKEVENTS
 378         select GENERIC_GPIO
 379         select USB_ARCH_HAS_EHCI
 380         help
 381           Support for systems based on the Freescale 3xxx CPUs.
 382
 383 config ARCH_NETX
 384         bool "Hilscher NetX based"
 385         select CPU_ARM926T
 386         select ARM_VIC
 387         select GENERIC_CLOCKEVENTS
 388         select GENERIC_TIME
 389         help
 390           This enables support for systems based on the Hilscher NetX Soc
 391
 392 config ARCH_H720X
 393         bool "Hynix HMS720x-based"
 394         select CPU_ARM720T
 395         select ISA_DMA_API
 396         help
 397           This enables support for systems based on the Hynix HMS720x
 398
 399 config ARCH_IOP13XX
 400         bool "IOP13xx-based"
 401         depends on MMU
 402         select CPU_XSC3
 403         select PLAT_IOP
 404         select PCI
 405         select ARCH_SUPPORTS_MSI
 406         select VMSPLIT_1G
 407         help
 408           Support for Intel's IOP13XX (XScale) family of processors.
 409
 410 config ARCH_IOP32X
 411         bool "IOP32x-based"
 412         depends on MMU
 413         select CPU_XSCALE
 414         select PLAT_IOP
 415         select PCI
 416         select GENERIC_GPIO
 417         select ARCH_REQUIRE_GPIOLIB
 418         help
 419           Support for Intel's 80219 and IOP32X (XScale) family of
 420           processors.
 421
 422 config ARCH_IOP33X
 423         bool "IOP33x-based"
 424         depends on MMU
 425         select CPU_XSCALE
 426         select PLAT_IOP
 427         select PCI
 428         select GENERIC_GPIO
 429         select ARCH_REQUIRE_GPIOLIB
 430         help
 431           Support for Intel's IOP33X (XScale) family of processors.
 432
 433 config ARCH_IXP23XX
 434         bool "IXP23XX-based"
 435         depends on MMU
 436         select CPU_XSC3
 437         select PCI
 438         help
 439           Support for Intel's IXP23xx (XScale) family of processors.
 440
 441 config ARCH_IXP2000
 442         bool "IXP2400/2800-based"
 443         depends on MMU
 444         select CPU_XSCALE
 445         select PCI
 446         help
 447           Support for Intel's IXP2400/2800 (XScale) family of processors.
 448
 449 config ARCH_IXP4XX
 450         bool "IXP4xx-based"
 451         depends on MMU
 452         select CPU_XSCALE
 453         select GENERIC_GPIO
 454         select GENERIC_TIME
 455         select GENERIC_CLOCKEVENTS
 456         select DMABOUNCE if PCI
 457         help
 458           Support for Intel's IXP4XX (XScale) family of processors.
 459
 460 config ARCH_L7200
 461         bool "LinkUp-L7200"
 462         select CPU_ARM720T
 463         select FIQ
 464         help
 465           Say Y here if you intend to run this kernel on a LinkUp Systems
 466           L7200 Software Development Board which uses an ARM720T processor.
 467           Information on this board can be obtained at:
 468
 469           <http://www.linkupsys.com/>
 470
 471           If you have any questions or comments about the Linux kernel port
 472           to this board, send e-mail to <sjhill@cotw.com>.
 473
 474 config ARCH_DOVE
 475         bool "Marvell Dove"
 476         select PCI
 477         select GENERIC_GPIO
 478         select ARCH_REQUIRE_GPIOLIB
 479         select GENERIC_TIME
 480         select GENERIC_CLOCKEVENTS
 481         select PLAT_ORION
 482         help
 483           Support for the Marvell Dove SoC 88AP510
 484
 485 config ARCH_KIRKWOOD
 486         bool "Marvell Kirkwood"
 487         select CPU_FEROCEON
 488         select PCI
 489         select GENERIC_GPIO
 490         select ARCH_REQUIRE_GPIOLIB
 491         select GENERIC_TIME
 492         select GENERIC_CLOCKEVENTS
 493         select PLAT_ORION
 494         help
 495           Support for the following Marvell Kirkwood series SoCs:
 496           88F6180, 88F6192 and 88F6281.
 497
 498 config ARCH_LOKI
 499         bool "Marvell Loki (88RC8480)"
 500         select CPU_FEROCEON
 501         select GENERIC_TIME
 502         select GENERIC_CLOCKEVENTS
 503         select PLAT_ORION
 504         help
 505           Support for the Marvell Loki (88RC8480) SoC.
 506
 507 config ARCH_MV78XX0
 508         bool "Marvell MV78xx0"
 509         select CPU_FEROCEON
 510         select PCI
 511         select GENERIC_GPIO
 512         select ARCH_REQUIRE_GPIOLIB
 513         select GENERIC_TIME
 514         select GENERIC_CLOCKEVENTS
 515         select PLAT_ORION
 516         help
 517           Support for the following Marvell MV78xx0 series SoCs:
 518           MV781x0, MV782x0.
 519
 520 config ARCH_ORION5X
 521         bool "Marvell Orion"
 522         depends on MMU
 523         select CPU_FEROCEON
 524         select PCI
 525         select GENERIC_GPIO
 526         select ARCH_REQUIRE_GPIOLIB
 527         select GENERIC_TIME
 528         select GENERIC_CLOCKEVENTS
 529         select PLAT_ORION
 530         help
 531           Support for the following Marvell Orion 5x series SoCs:
 532           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 533           Orion-2 (5281), Orion-1-90 (6183).
 534
 535 config ARCH_MMP
 536         bool "Marvell PXA168/910/MMP2"
 537         depends on MMU
 538         select GENERIC_GPIO
 539         select ARCH_REQUIRE_GPIOLIB
 540         select HAVE_CLK
 541         select COMMON_CLKDEV
 542         select GENERIC_TIME
 543         select GENERIC_CLOCKEVENTS
 544         select TICK_ONESHOT
 545         select PLAT_PXA
 546         help
 547           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 548
 549 config ARCH_KS8695
 550         bool "Micrel/Kendin KS8695"
 551         select CPU_ARM922T
 552         select GENERIC_GPIO
 553         select ARCH_REQUIRE_GPIOLIB
 554         help
 555           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 556           System-on-Chip devices.
 557
 558 config ARCH_NS9XXX
 559         bool "NetSilicon NS9xxx"
 560         select CPU_ARM926T
 561         select GENERIC_GPIO
 562         select GENERIC_TIME
 563         select GENERIC_CLOCKEVENTS
 564         select HAVE_CLK
 565         help
 566           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 567           System.
 568
 569           <http://www.digi.com/products/microprocessors/index.jsp>
 570
 571 config ARCH_W90X900
 572         bool "Nuvoton W90X900 CPU"
 573         select CPU_ARM926T
 574         select ARCH_REQUIRE_GPIOLIB
 575         select GENERIC_GPIO
 576         select HAVE_CLK
 577         select COMMON_CLKDEV
 578         select GENERIC_TIME
 579         select GENERIC_CLOCKEVENTS
 580         help
 581           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 582           At present, the w90x900 has been renamed nuc900, regarding
 583           the ARM series product line, you can login the following
 584           link address to know more.
 585
 586           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 587                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 588
 589 config ARCH_NUC93X
 590         bool "Nuvoton NUC93X CPU"
 591         select CPU_ARM926T
 592         select HAVE_CLK
 593         select COMMON_CLKDEV
 594         help
 595           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 596           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 597
 598 config ARCH_PNX4008
 599         bool "Philips Nexperia PNX4008 Mobile"
 600         select CPU_ARM926T
 601         select HAVE_CLK
 602         select COMMON_CLKDEV
 603         help
 604           This enables support for Philips PNX4008 mobile platform.
 605
 606 config ARCH_PXA
 607         bool "PXA2xx/PXA3xx-based"
 608         depends on MMU
 609         select ARCH_MTD_XIP
 610         select ARCH_HAS_CPUFREQ
 611         select GENERIC_GPIO
 612         select HAVE_CLK
 613         select COMMON_CLKDEV
 614         select ARCH_REQUIRE_GPIOLIB
 615         select GENERIC_TIME
 616         select GENERIC_CLOCKEVENTS
 617         select TICK_ONESHOT
 618         select PLAT_PXA
 619         help
 620           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 621
 622 config ARCH_MSM
 623         bool "Qualcomm MSM"
 624         select CPU_V6
 625         select GENERIC_TIME
 626         select GENERIC_CLOCKEVENTS
 627         help
 628           Support for Qualcomm MSM7K based systems.  This runs on the ARM11
 629           apps processor of the MSM7K and depends on a shared memory
 630           interface to the ARM9 modem processor which runs the baseband stack
 631           and controls some vital subsystems (clock and power control, etc).
 632
 633 config ARCH_SHMOBILE
 634         bool "Renesas SH-Mobile"
 635         help
 636           Support for Renesas's SH-Mobile ARM platforms
 637
 638 config ARCH_RPC
 639         bool "RiscPC"
 640         select ARCH_ACORN
 641         select FIQ
 642         select TIMER_ACORN
 643         select ARCH_MAY_HAVE_PC_FDC
 644         select HAVE_PATA_PLATFORM
 645         select ISA_DMA_API
 646         select NO_IOPORT
 647         select ARCH_SPARSEMEM_ENABLE
 648         help
 649           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 650           CD-ROM interface, serial and parallel port, and the floppy drive.
 651
 652 config ARCH_SA1100
 653         bool "SA1100-based"
 654         select CPU_SA1100
 655         select ISA
 656         select ARCH_SPARSEMEM_ENABLE
 657         select ARCH_MTD_XIP
 658         select ARCH_HAS_CPUFREQ
 659         select CPU_FREQ
 660         select GENERIC_GPIO
 661         select GENERIC_TIME
 662         select GENERIC_CLOCKEVENTS
 663         select HAVE_CLK
 664         select TICK_ONESHOT
 665         select ARCH_REQUIRE_GPIOLIB
 666         help
 667           Support for StrongARM 11x0 based boards.
 668
 669 config ARCH_S3C2410
 670         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 671         select GENERIC_GPIO
 672         select ARCH_HAS_CPUFREQ
 673         select HAVE_CLK
 674         help
 675           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 676           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 677           the Samsung SMDK2410 development board (and derivatives).
 678
 679 config ARCH_S3C64XX
 680         bool "Samsung S3C64XX"
 681         select PLAT_SAMSUNG
 682         select CPU_V6
 683         select GENERIC_GPIO
 684         select ARM_VIC
 685         select HAVE_CLK
 686         select NO_IOPORT
 687         select ARCH_HAS_CPUFREQ
 688         select ARCH_REQUIRE_GPIOLIB
 689         select SAMSUNG_CLKSRC
 690         select SAMSUNG_IRQ_VIC_TIMER
 691         select SAMSUNG_IRQ_UART
 692         select S3C_GPIO_TRACK
 693         select S3C_GPIO_PULL_UPDOWN
 694         select S3C_GPIO_CFG_S3C24XX
 695         select S3C_GPIO_CFG_S3C64XX
 696         select S3C_DEV_NAND
 697         select USB_ARCH_HAS_OHCI
 698         select SAMSUNG_GPIOLIB_4BIT
 699         help
 700           Samsung S3C64XX series based systems
 701
 702 config ARCH_S5P6440
 703         bool "Samsung S5P6440"
 704         select CPU_V6
 705         select GENERIC_GPIO
 706         select HAVE_CLK
 707         help
 708           Samsung S5P6440 CPU based systems
 709
 710 config ARCH_S5P6442
 711         bool "Samsung S5P6442"
 712         select CPU_V6
 713         select GENERIC_GPIO
 714         select HAVE_CLK
 715         help
 716           Samsung S5P6442 CPU based systems
 717
 718 config ARCH_S5PC1XX
 719         bool "Samsung S5PC1XX"
 720         select GENERIC_GPIO
 721         select HAVE_CLK
 722         select CPU_V7
 723         select ARM_L1_CACHE_SHIFT_6
 724         help
 725           Samsung S5PC1XX series based systems
 726
 727 config ARCH_S5PV210
 728         bool "Samsung S5PV210/S5PC110"
 729         select CPU_V7
 730         select GENERIC_GPIO
 731         select HAVE_CLK
 732         select ARM_L1_CACHE_SHIFT_6
 733         help
 734           Samsung S5PV210/S5PC110 series based systems
 735
 736 config ARCH_SHARK
 737         bool "Shark"
 738         select CPU_SA110
 739         select ISA
 740         select ISA_DMA
 741         select ZONE_DMA
 742         select PCI
 743         help
 744           Support for the StrongARM based Digital DNARD machine, also known
 745           as "Shark" (<http://www.shark-linux.de/shark.html>).
 746
 747 config ARCH_LH7A40X
 748         bool "Sharp LH7A40X"
 749         select CPU_ARM922T
 750         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 751         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 752         help
 753           Say Y here for systems based on one of the Sharp LH7A40X
 754           System on a Chip processors.  These CPUs include an ARM922T
 755           core with a wide array of integrated devices for
 756           hand-held and low-power applications.
 757
 758 config ARCH_U300
 759         bool "ST-Ericsson U300 Series"
 760         depends on MMU
 761         select CPU_ARM926T
 762         select HAVE_TCM
 763         select ARM_AMBA
 764         select ARM_VIC
 765         select GENERIC_TIME
 766         select GENERIC_CLOCKEVENTS
 767         select HAVE_CLK
 768         select COMMON_CLKDEV
 769         select GENERIC_GPIO
 770         help
 771           Support for ST-Ericsson U300 series mobile platforms.
 772
 773 config ARCH_U8500
 774         bool "ST-Ericsson U8500 Series"
 775         select CPU_V7
 776         select ARM_AMBA
 777         select GENERIC_TIME
 778         select GENERIC_CLOCKEVENTS
 779         select COMMON_CLKDEV
 780         help
 781           Support for ST-Ericsson's Ux500 architecture
 782
 783 config ARCH_NOMADIK
 784         bool "STMicroelectronics Nomadik"
 785         select ARM_AMBA
 786         select ARM_VIC
 787         select CPU_ARM926T
 788         select HAVE_CLK
 789         select COMMON_CLKDEV
 790         select GENERIC_TIME
 791         select GENERIC_CLOCKEVENTS
 792         select GENERIC_GPIO
 793         select ARCH_REQUIRE_GPIOLIB
 794         help
 795           Support for the Nomadik platform by ST-Ericsson
 796
 797 config ARCH_DAVINCI
 798         bool "TI DaVinci"
 799         select CPU_ARM926T
 800         select GENERIC_TIME
 801         select GENERIC_CLOCKEVENTS
 802         select GENERIC_GPIO
 803         select ARCH_REQUIRE_GPIOLIB
 804         select HAVE_CLK
 805         select ZONE_DMA
 806         select HAVE_IDE
 807         select COMMON_CLKDEV
 808         select GENERIC_ALLOCATOR
 809         select ARCH_HAS_HOLES_MEMORYMODEL
 810         help
 811           Support for TI's DaVinci platform.
 812
 813 config ARCH_OMAP
 814         bool "TI OMAP"
 815         select GENERIC_GPIO
 816         select HAVE_CLK
 817         select ARCH_REQUIRE_GPIOLIB
 818         select ARCH_HAS_CPUFREQ
 819         select GENERIC_TIME
 820         select GENERIC_CLOCKEVENTS
 821         select ARCH_HAS_HOLES_MEMORYMODEL
 822         help
 823           Support for TI's OMAP platform (OMAP1 and OMAP2).
 824
 825 endchoice
 826
 827 #
 828 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 829 # Kconfigs may be included either alphabetically (according to the
 830 # plat- suffix) or along side the corresponding mach-* source.
 831 #
 832 source "arch/arm/mach-aaec2000/Kconfig"
 833
 834 source "arch/arm/mach-at91/Kconfig"
 835
 836 source "arch/arm/mach-bcmring/Kconfig"
 837
 838 source "arch/arm/mach-clps711x/Kconfig"
 839
 840 source "arch/arm/mach-davinci/Kconfig"
 841
 842 source "arch/arm/mach-dove/Kconfig"
 843
 844 source "arch/arm/mach-ep93xx/Kconfig"
 845
 846 source "arch/arm/mach-footbridge/Kconfig"
 847
 848 source "arch/arm/mach-gemini/Kconfig"
 849
 850 source "arch/arm/mach-h720x/Kconfig"
 851
 852 source "arch/arm/mach-integrator/Kconfig"
 853
 854 source "arch/arm/mach-iop32x/Kconfig"
 855
 856 source "arch/arm/mach-iop33x/Kconfig"
 857
 858 source "arch/arm/mach-iop13xx/Kconfig"
 859
 860 source "arch/arm/mach-ixp4xx/Kconfig"
 861
 862 source "arch/arm/mach-ixp2000/Kconfig"
 863
 864 source "arch/arm/mach-ixp23xx/Kconfig"
 865
 866 source "arch/arm/mach-kirkwood/Kconfig"
 867
 868 source "arch/arm/mach-ks8695/Kconfig"
 869
 870 source "arch/arm/mach-lh7a40x/Kconfig"
 871
 872 source "arch/arm/mach-loki/Kconfig"
 873
 874 source "arch/arm/mach-msm/Kconfig"
 875
 876 source "arch/arm/mach-mv78xx0/Kconfig"
 877
 878 source "arch/arm/plat-mxc/Kconfig"
 879
 880 source "arch/arm/mach-netx/Kconfig"
 881
 882 source "arch/arm/mach-nomadik/Kconfig"
 883 source "arch/arm/plat-nomadik/Kconfig"
 884
 885 source "arch/arm/mach-ns9xxx/Kconfig"
 886
 887 source "arch/arm/mach-nuc93x/Kconfig"
 888
 889 source "arch/arm/plat-omap/Kconfig"
 890
 891 source "arch/arm/mach-omap1/Kconfig"
 892
 893 source "arch/arm/mach-omap2/Kconfig"
 894
 895 source "arch/arm/mach-orion5x/Kconfig"
 896
 897 source "arch/arm/mach-pxa/Kconfig"
 898 source "arch/arm/plat-pxa/Kconfig"
 899
 900 source "arch/arm/mach-mmp/Kconfig"
 901
 902 source "arch/arm/mach-realview/Kconfig"
 903
 904 source "arch/arm/mach-sa1100/Kconfig"
 905
 906 source "arch/arm/plat-samsung/Kconfig"
 907 source "arch/arm/plat-s3c24xx/Kconfig"
 908 source "arch/arm/plat-s5p/Kconfig"
 909 source "arch/arm/plat-s5pc1xx/Kconfig"
 910
 911 if ARCH_S3C2410
 912 source "arch/arm/mach-s3c2400/Kconfig"
 913 source "arch/arm/mach-s3c2410/Kconfig"
 914 source "arch/arm/mach-s3c2412/Kconfig"
 915 source "arch/arm/mach-s3c2440/Kconfig"
 916 source "arch/arm/mach-s3c2443/Kconfig"
 917 endif
 918
 919 if ARCH_S3C64XX
 920 source "arch/arm/mach-s3c64xx/Kconfig"
 921 endif
 922
 923 source "arch/arm/mach-s5p6440/Kconfig"
 924
 925 source "arch/arm/mach-s5p6442/Kconfig"
 926
 927 if ARCH_S5PC1XX
 928 source "arch/arm/mach-s5pc100/Kconfig"
 929 endif
 930
 931 source "arch/arm/mach-s5pv210/Kconfig"
 932
 933 source "arch/arm/mach-shmobile/Kconfig"
 934
 935 source "arch/arm/plat-stmp3xxx/Kconfig"
 936
 937 source "arch/arm/mach-u300/Kconfig"
 938
 939 source "arch/arm/mach-ux500/Kconfig"
 940
 941 source "arch/arm/mach-versatile/Kconfig"
 942
 943 source "arch/arm/mach-vexpress/Kconfig"
 944
 945 source "arch/arm/mach-w90x900/Kconfig"
 946
 947 # Definitions to make life easier
 948 config ARCH_ACORN
 949         bool
 950
 951 config PLAT_IOP
 952         bool
 953         select GENERIC_CLOCKEVENTS
 954         select GENERIC_TIME
 955
 956 config PLAT_ORION
 957         bool
 958
 959 config PLAT_PXA
 960         bool
 961
 962 config PLAT_VERSATILE
 963         bool
 964
 965 config ARM_TIMER_SP804
 966         bool
 967
 968 source arch/arm/mm/Kconfig
 969
 970 config IWMMXT
 971         bool "Enable iWMMXt support"
 972         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 973         default y if PXA27x || PXA3xx || ARCH_MMP
 974         help
 975           Enable support for iWMMXt context switching at run time if
 976           running on a CPU that supports it.
 977
 978 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 979 config XSCALE_PMU
 980         bool
 981         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 982         default y
 983
 984 config CPU_HAS_PMU
 985         depends on CPU_V6 || CPU_V7 || XSCALE_PMU
 986         default y
 987         bool
 988
 989 if !MMU
 990 source "arch/arm/Kconfig-nommu"
 991 endif
 992
 993 config ARM_ERRATA_411920
 994         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 995         depends on CPU_V6 && !SMP
 996         help
 997           Invalidation of the Instruction Cache operation can
 998           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 999           It does not affect the MPCore. This option enables the ARM Ltd.
1000           recommended workaround.
1001
1002 config ARM_ERRATA_430973
1003         bool "ARM errata: Stale prediction on replaced interworking branch"
1004         depends on CPU_V7
1005         help
1006           This option enables the workaround for the 430973 Cortex-A8
1007           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1008           interworking branch is replaced with another code sequence at the
1009           same virtual address, whether due to self-modifying code or virtual
1010           to physical address re-mapping, Cortex-A8 does not recover from the
1011           stale interworking branch prediction. This results in Cortex-A8
1012           executing the new code sequence in the incorrect ARM or Thumb state.
1013           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1014           and also flushes the branch target cache at every context switch.
1015           Note that setting specific bits in the ACTLR register may not be
1016           available in non-secure mode.
1017
1018 config ARM_ERRATA_458693
1019         bool "ARM errata: Processor deadlock when a false hazard is created"
1020         depends on CPU_V7
1021         help
1022           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1023           erratum. For very specific sequences of memory operations, it is
1024           possible for a hazard condition intended for a cache line to instead
1025           be incorrectly associated with a different cache line. This false
1026           hazard might then cause a processor deadlock. The workaround enables
1027           the L1 caching of the NEON accesses and disables the PLD instruction
1028           in the ACTLR register. Note that setting specific bits in the ACTLR
1029           register may not be available in non-secure mode.
1030
1031 config ARM_ERRATA_460075
1032         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1033         depends on CPU_V7
1034         help
1035           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1036           erratum. Any asynchronous access to the L2 cache may encounter a
1037           situation in which recent store transactions to the L2 cache are lost
1038           and overwritten with stale memory contents from external memory. The
1039           workaround disables the write-allocate mode for the L2 cache via the
1040           ACTLR register. Note that setting specific bits in the ACTLR register
1041           may not be available in non-secure mode.
1042
1043 config PL310_ERRATA_588369
1044         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1045         depends on CACHE_L2X0 && ARCH_OMAP4
1046         help
1047            The PL310 L2 cache controller implements three types of Clean &
1048            Invalidate maintenance operations: by Physical Address
1049            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1050            They are architecturally defined to behave as the execution of a
1051            clean operation followed immediately by an invalidate operation,
1052            both performing to the same memory location. This functionality
1053            is not correctly implemented in PL310 as clean lines are not
1054            invalidated as a result of these operations. Note that this errata
1055            uses Texas Instrument's secure monitor api.
1056 endmenu
1057
1058 source "arch/arm/common/Kconfig"
1059
1060 config FORCE_MAX_ZONEORDER
1061         int
1062         depends on SA1111
1063         default "9"
1064
1065 menu "Bus support"
1066
1067 config ARM_AMBA
1068         bool
1069
1070 config ISA
1071         bool
1072         help
1073           Find out whether you have ISA slots on your motherboard.  ISA is the
1074           name of a bus system, i.e. the way the CPU talks to the other stuff
1075           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1076           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1077           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1078
1079 # Select ISA DMA controller support
1080 config ISA_DMA
1081         bool
1082         select ISA_DMA_API
1083
1084 # Select ISA DMA interface
1085 config ISA_DMA_API
1086         bool
1087
1088 config PCI
1089         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1090         help
1091           Find out whether you have a PCI motherboard. PCI is the name of a
1092           bus system, i.e. the way the CPU talks to the other stuff inside
1093           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1094           VESA. If you have PCI, say Y, otherwise N.
1095
1096 config PCI_SYSCALL
1097         def_bool PCI
1098
1099 # Select the host bridge type
1100 config PCI_HOST_VIA82C505
1101         bool
1102         depends on PCI && ARCH_SHARK
1103         default y
1104
1105 config PCI_HOST_ITE8152
1106         bool
1107         depends on PCI && MACH_ARMCORE
1108         default y
1109         select DMABOUNCE
1110
1111 source "drivers/pci/Kconfig"
1112
1113 source "drivers/pcmcia/Kconfig"
1114
1115 endmenu
1116
1117 menu "Kernel Features"
1118
1119 source "kernel/time/Kconfig"
1120
1121 config SMP
1122         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1123         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1124                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1125         depends on GENERIC_CLOCKEVENTS
1126         select USE_GENERIC_SMP_HELPERS
1127         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1128         help
1129           This enables support for systems with more than one CPU. If you have
1130           a system with only one CPU, like most personal computers, say N. If
1131           you have a system with more than one CPU, say Y.
1132
1133           If you say N here, the kernel will run on single and multiprocessor
1134           machines, but will use only one CPU of a multiprocessor machine. If
1135           you say Y here, the kernel will run on many, but not all, single
1136           processor machines. On a single processor machine, the kernel will
1137           run faster if you say N here.
1138
1139           See also <file:Documentation/i386/IO-APIC.txt>,
1140           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1141           <http://www.linuxdoc.org/docs.html#howto>.
1142
1143           If you don't know what to do here, say N.
1144
1145 config HAVE_ARM_SCU
1146         bool
1147         depends on SMP
1148         help
1149           This option enables support for the ARM system coherency unit
1150
1151 config HAVE_ARM_TWD
1152         bool
1153         depends on SMP
1154         help
1155           This options enables support for the ARM timer and watchdog unit
1156
1157 choice
1158         prompt "Memory split"
1159         default VMSPLIT_3G
1160         help
1161           Select the desired split between kernel and user memory.
1162
1163           If you are not absolutely sure what you are doing, leave this
1164           option alone!
1165
1166         config VMSPLIT_3G
1167                 bool "3G/1G user/kernel split"
1168         config VMSPLIT_2G
1169                 bool "2G/2G user/kernel split"
1170         config VMSPLIT_1G
1171                 bool "1G/3G user/kernel split"
1172 endchoice
1173
1174 config PAGE_OFFSET
1175         hex
1176         default 0x40000000 if VMSPLIT_1G
1177         default 0x80000000 if VMSPLIT_2G
1178         default 0xC0000000
1179
1180 config NR_CPUS
1181         int "Maximum number of CPUs (2-32)"
1182         range 2 32
1183         depends on SMP
1184         default "4"
1185
1186 config HOTPLUG_CPU
1187         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1188         depends on SMP && HOTPLUG && EXPERIMENTAL
1189         help
1190           Say Y here to experiment with turning CPUs off and on.  CPUs
1191           can be controlled through /sys/devices/system/cpu.
1192
1193 config LOCAL_TIMERS
1194         bool "Use local timer interrupts"
1195         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1196                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1197         default y
1198         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1199         help
1200           Enable support for local timers on SMP platforms, rather then the
1201           legacy IPI broadcast method.  Local timers allows the system
1202           accounting to be spread across the timer interval, preventing a
1203           "thundering herd" at every timer tick.
1204
1205 source kernel/Kconfig.preempt
1206
1207 config HZ
1208         int
1209         default 128 if ARCH_L7200
1210         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1211         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1212         default AT91_TIMER_HZ if ARCH_AT91
1213         default 100
1214
1215 config THUMB2_KERNEL
1216         bool "Compile the kernel in Thumb-2 mode"
1217         depends on CPU_V7 && EXPERIMENTAL
1218         select AEABI
1219         select ARM_ASM_UNIFIED
1220         help
1221           By enabling this option, the kernel will be compiled in
1222           Thumb-2 mode. A compiler/assembler that understand the unified
1223           ARM-Thumb syntax is needed.
1224
1225           If unsure, say N.
1226
1227 config ARM_ASM_UNIFIED
1228         bool
1229
1230 config AEABI
1231         bool "Use the ARM EABI to compile the kernel"
1232         help
1233           This option allows for the kernel to be compiled using the latest
1234           ARM ABI (aka EABI).  This is only useful if you are using a user
1235           space environment that is also compiled with EABI.
1236
1237           Since there are major incompatibilities between the legacy ABI and
1238           EABI, especially with regard to structure member alignment, this
1239           option also changes the kernel syscall calling convention to
1240           disambiguate both ABIs and allow for backward compatibility support
1241           (selected with CONFIG_OABI_COMPAT).
1242
1243           To use this you need GCC version 4.0.0 or later.
1244
1245 config OABI_COMPAT
1246         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1247         depends on AEABI && EXPERIMENTAL
1248         default y
1249         help
1250           This option preserves the old syscall interface along with the
1251           new (ARM EABI) one. It also provides a compatibility layer to
1252           intercept syscalls that have structure arguments which layout
1253           in memory differs between the legacy ABI and the new ARM EABI
1254           (only for non "thumb" binaries). This option adds a tiny
1255           overhead to all syscalls and produces a slightly larger kernel.
1256           If you know you'll be using only pure EABI user space then you
1257           can say N here. If this option is not selected and you attempt
1258           to execute a legacy ABI binary then the result will be
1259           UNPREDICTABLE (in fact it can be predicted that it won't work
1260           at all). If in doubt say Y.
1261
1262 config ARCH_HAS_HOLES_MEMORYMODEL
1263         bool
1264
1265 # Discontigmem is deprecated
1266 config ARCH_DISCONTIGMEM_ENABLE
1267         bool
1268
1269 config ARCH_SPARSEMEM_ENABLE
1270         bool
1271
1272 config ARCH_SPARSEMEM_DEFAULT
1273         def_bool ARCH_SPARSEMEM_ENABLE
1274
1275 config ARCH_SELECT_MEMORY_MODEL
1276         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1277
1278 config NODES_SHIFT
1279         int
1280         default "4" if ARCH_LH7A40X
1281         default "2"
1282         depends on NEED_MULTIPLE_NODES
1283
1284 config HIGHMEM
1285         bool "High Memory Support (EXPERIMENTAL)"
1286         depends on MMU && EXPERIMENTAL
1287         help
1288           The address space of ARM processors is only 4 Gigabytes large
1289           and it has to accommodate user address space, kernel address
1290           space as well as some memory mapped IO. That means that, if you
1291           have a large amount of physical memory and/or IO, not all of the
1292           memory can be "permanently mapped" by the kernel. The physical
1293           memory that is not permanently mapped is called "high memory".
1294
1295           Depending on the selected kernel/user memory split, minimum
1296           vmalloc space and actual amount of RAM, you may not need this
1297           option which should result in a slightly faster kernel.
1298
1299           If unsure, say n.
1300
1301 config HIGHPTE
1302         bool "Allocate 2nd-level pagetables from highmem"
1303         depends on HIGHMEM
1304         depends on !OUTER_CACHE
1305
1306 config HW_PERF_EVENTS
1307         bool "Enable hardware performance counter support for perf events"
1308         depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
1309         default y
1310         help
1311           Enable hardware performance counter support for perf events. If
1312           disabled, perf events will use software events only.
1313
1314 source "mm/Kconfig"
1315
1316 config LEDS
1317         bool "Timer and CPU usage LEDs"
1318         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1319                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1320                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1321                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1322                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1323                    ARCH_AT91 || ARCH_DAVINCI || \
1324                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1325         help
1326           If you say Y here, the LEDs on your machine will be used
1327           to provide useful information about your current system status.
1328
1329           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1330           be able to select which LEDs are active using the options below. If
1331           you are compiling a kernel for the EBSA-110 or the LART however, the
1332           red LED will simply flash regularly to indicate that the system is
1333           still functional. It is safe to say Y here if you have a CATS
1334           system, but the driver will do nothing.
1335
1336 config LEDS_TIMER
1337         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1338                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1339                             || MACH_OMAP_PERSEUS2
1340         depends on LEDS
1341         depends on !GENERIC_CLOCKEVENTS
1342         default y if ARCH_EBSA110
1343         help
1344           If you say Y here, one of the system LEDs (the green one on the
1345           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1346           will flash regularly to indicate that the system is still
1347           operational. This is mainly useful to kernel hackers who are
1348           debugging unstable kernels.
1349
1350           The LART uses the same LED for both Timer LED and CPU usage LED
1351           functions. You may choose to use both, but the Timer LED function
1352           will overrule the CPU usage LED.
1353
1354 config LEDS_CPU
1355         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1356                         !ARCH_OMAP) \
1357                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1358                         || MACH_OMAP_PERSEUS2
1359         depends on LEDS
1360         help
1361           If you say Y here, the red LED will be used to give a good real
1362           time indication of CPU usage, by lighting whenever the idle task
1363           is not currently executing.
1364
1365           The LART uses the same LED for both Timer LED and CPU usage LED
1366           functions. You may choose to use both, but the Timer LED function
1367           will overrule the CPU usage LED.
1368
1369 config ALIGNMENT_TRAP
1370         bool
1371         depends on CPU_CP15_MMU
1372         default y if !ARCH_EBSA110
1373         select HAVE_PROC_CPU if PROC_FS
1374         help
1375           ARM processors cannot fetch/store information which is not
1376           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1377           address divisible by 4. On 32-bit ARM processors, these non-aligned
1378           fetch/store instructions will be emulated in software if you say
1379           here, which has a severe performance impact. This is necessary for
1380           correct operation of some network protocols. With an IP-only
1381           configuration it is safe to say N, otherwise say Y.
1382
1383 config UACCESS_WITH_MEMCPY
1384         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1385         depends on MMU && EXPERIMENTAL
1386         default y if CPU_FEROCEON
1387         help
1388           Implement faster copy_to_user and clear_user methods for CPU
1389           cores where a 8-word STM instruction give significantly higher
1390           memory write throughput than a sequence of individual 32bit stores.
1391
1392           A possible side effect is a slight increase in scheduling latency
1393           between threads sharing the same address space if they invoke
1394           such copy operations with large buffers.
1395
1396           However, if the CPU data cache is using a write-allocate mode,
1397           this option is unlikely to provide any performance gain.
1398
1399 endmenu
1400
1401 menu "Boot options"
1402
1403 # Compressed boot loader in ROM.  Yes, we really want to ask about
1404 # TEXT and BSS so we preserve their values in the config files.
1405 config ZBOOT_ROM_TEXT
1406         hex "Compressed ROM boot loader base address"
1407         default "0"
1408         help
1409           The physical address at which the ROM-able zImage is to be
1410           placed in the target.  Platforms which normally make use of
1411           ROM-able zImage formats normally set this to a suitable
1412           value in their defconfig file.
1413
1414           If ZBOOT_ROM is not enabled, this has no effect.
1415
1416 config ZBOOT_ROM_BSS
1417         hex "Compressed ROM boot loader BSS address"
1418         default "0"
1419         help
1420           The base address of an area of read/write memory in the target
1421           for the ROM-able zImage which must be available while the
1422           decompressor is running. It must be large enough to hold the
1423           entire decompressed kernel plus an additional 128 KiB.
1424           Platforms which normally make use of ROM-able zImage formats
1425           normally set this to a suitable value in their defconfig file.
1426
1427           If ZBOOT_ROM is not enabled, this has no effect.
1428
1429 config ZBOOT_ROM
1430         bool "Compressed boot loader in ROM/flash"
1431         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1432         help
1433           Say Y here if you intend to execute your compressed kernel image
1434           (zImage) directly from ROM or flash.  If unsure, say N.
1435
1436 config CMDLINE
1437         string "Default kernel command string"
1438         default ""
1439         help
1440           On some architectures (EBSA110 and CATS), there is currently no way
1441           for the boot loader to pass arguments to the kernel. For these
1442           architectures, you should supply some command-line options at build
1443           time by entering them here. As a minimum, you should specify the
1444           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1445
1446 config XIP_KERNEL
1447         bool "Kernel Execute-In-Place from ROM"
1448         depends on !ZBOOT_ROM
1449         help
1450           Execute-In-Place allows the kernel to run from non-volatile storage
1451           directly addressable by the CPU, such as NOR flash. This saves RAM
1452           space since the text section of the kernel is not loaded from flash
1453           to RAM.  Read-write sections, such as the data section and stack,
1454           are still copied to RAM.  The XIP kernel is not compressed since
1455           it has to run directly from flash, so it will take more space to
1456           store it.  The flash address used to link the kernel object files,
1457           and for storing it, is configuration dependent. Therefore, if you
1458           say Y here, you must know the proper physical address where to
1459           store the kernel image depending on your own flash memory usage.
1460
1461           Also note that the make target becomes "make xipImage" rather than
1462           "make zImage" or "make Image".  The final kernel binary to put in
1463           ROM memory will be arch/arm/boot/xipImage.
1464
1465           If unsure, say N.
1466
1467 config XIP_PHYS_ADDR
1468         hex "XIP Kernel Physical Location"
1469         depends on XIP_KERNEL
1470         default "0x00080000"
1471         help
1472           This is the physical address in your flash memory the kernel will
1473           be linked for and stored to.  This address is dependent on your
1474           own flash usage.
1475
1476 config KEXEC
1477         bool "Kexec system call (EXPERIMENTAL)"
1478         depends on EXPERIMENTAL
1479         help
1480           kexec is a system call that implements the ability to shutdown your
1481           current kernel, and to start another kernel.  It is like a reboot
1482           but it is independent of the system firmware.   And like a reboot
1483           you can start any kernel with it, not just Linux.
1484
1485           It is an ongoing process to be certain the hardware in a machine
1486           is properly shutdown, so do not be surprised if this code does not
1487           initially work for you.  It may help to enable device hotplugging
1488           support.
1489
1490 config ATAGS_PROC
1491         bool "Export atags in procfs"
1492         depends on KEXEC
1493         default y
1494         help
1495           Should the atags used to boot the kernel be exported in an "atags"
1496           file in procfs. Useful with kexec.
1497
1498 endmenu
1499
1500 menu "CPU Power Management"
1501
1502 if ARCH_HAS_CPUFREQ
1503
1504 source "drivers/cpufreq/Kconfig"
1505
1506 config CPU_FREQ_SA1100
1507         bool
1508
1509 config CPU_FREQ_SA1110
1510         bool
1511
1512 config CPU_FREQ_INTEGRATOR
1513         tristate "CPUfreq driver for ARM Integrator CPUs"
1514         depends on ARCH_INTEGRATOR && CPU_FREQ
1515         default y
1516         help
1517           This enables the CPUfreq driver for ARM Integrator CPUs.
1518
1519           For details, take a look at <file:Documentation/cpu-freq>.
1520
1521           If in doubt, say Y.
1522
1523 config CPU_FREQ_PXA
1524         bool
1525         depends on CPU_FREQ && ARCH_PXA && PXA25x
1526         default y
1527         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1528
1529 config CPU_FREQ_S3C64XX
1530         bool "CPUfreq support for Samsung S3C64XX CPUs"
1531         depends on CPU_FREQ && CPU_S3C6410
1532
1533 config CPU_FREQ_S3C
1534         bool
1535         help
1536           Internal configuration node for common cpufreq on Samsung SoC
1537
1538 config CPU_FREQ_S3C24XX
1539         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1540         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1541         select CPU_FREQ_S3C
1542         help
1543           This enables the CPUfreq driver for the Samsung S3C24XX family
1544           of CPUs.
1545
1546           For details, take a look at <file:Documentation/cpu-freq>.
1547
1548           If in doubt, say N.
1549
1550 config CPU_FREQ_S3C24XX_PLL
1551         bool "Support CPUfreq changing of PLL frequency"
1552         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1553         help
1554           Compile in support for changing the PLL frequency from the
1555           S3C24XX series CPUfreq driver. The PLL takes time to settle
1556           after a frequency change, so by default it is not enabled.
1557
1558           This also means that the PLL tables for the selected CPU(s) will
1559           be built which may increase the size of the kernel image.
1560
1561 config CPU_FREQ_S3C24XX_DEBUG
1562         bool "Debug CPUfreq Samsung driver core"
1563         depends on CPU_FREQ_S3C24XX
1564         help
1565           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1566
1567 config CPU_FREQ_S3C24XX_IODEBUG
1568         bool "Debug CPUfreq Samsung driver IO timing"
1569         depends on CPU_FREQ_S3C24XX
1570         help
1571           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1572
1573 config CPU_FREQ_S3C24XX_DEBUGFS
1574         bool "Export debugfs for CPUFreq"
1575         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1576         help
1577           Export status information via debugfs.
1578
1579 endif
1580
1581 source "drivers/cpuidle/Kconfig"
1582
1583 endmenu
1584
1585 menu "Floating point emulation"
1586
1587 comment "At least one emulation must be selected"
1588
1589 config FPE_NWFPE
1590         bool "NWFPE math emulation"
1591         depends on !AEABI || OABI_COMPAT
1592         ---help---
1593           Say Y to include the NWFPE floating point emulator in the kernel.
1594           This is necessary to run most binaries. Linux does not currently
1595           support floating point hardware so you need to say Y here even if
1596           your machine has an FPA or floating point co-processor podule.
1597
1598           You may say N here if you are going to load the Acorn FPEmulator
1599           early in the bootup.
1600
1601 config FPE_NWFPE_XP
1602         bool "Support extended precision"
1603         depends on FPE_NWFPE
1604         help
1605           Say Y to include 80-bit support in the kernel floating-point
1606           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1607           Note that gcc does not generate 80-bit operations by default,
1608           so in most cases this option only enlarges the size of the
1609           floating point emulator without any good reason.
1610
1611           You almost surely want to say N here.
1612
1613 config FPE_FASTFPE
1614         bool "FastFPE math emulation (EXPERIMENTAL)"
1615         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1616         ---help---
1617           Say Y here to include the FAST floating point emulator in the kernel.
1618           This is an experimental much faster emulator which now also has full
1619           precision for the mantissa.  It does not support any exceptions.
1620           It is very simple, and approximately 3-6 times faster than NWFPE.
1621
1622           It should be sufficient for most programs.  It may be not suitable
1623           for scientific calculations, but you have to check this for yourself.
1624           If you do not feel you need a faster FP emulation you should better
1625           choose NWFPE.
1626
1627 config VFP
1628         bool "VFP-format floating point maths"
1629         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1630         help
1631           Say Y to include VFP support code in the kernel. This is needed
1632           if your hardware includes a VFP unit.
1633
1634           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1635           release notes and additional status information.
1636
1637           Say N if your target does not have VFP hardware.
1638
1639 config VFPv3
1640         bool
1641         depends on VFP
1642         default y if CPU_V7
1643
1644 config NEON
1645         bool "Advanced SIMD (NEON) Extension support"
1646         depends on VFPv3 && CPU_V7
1647         help
1648           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1649           Extension.
1650
1651 endmenu
1652
1653 menu "Userspace binary formats"
1654
1655 source "fs/Kconfig.binfmt"
1656
1657 config ARTHUR
1658         tristate "RISC OS personality"
1659         depends on !AEABI
1660         help
1661           Say Y here to include the kernel code necessary if you want to run
1662           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1663           experimental; if this sounds frightening, say N and sleep in peace.
1664           You can also say M here to compile this support as a module (which
1665           will be called arthur).
1666
1667 endmenu
1668
1669 menu "Power management options"
1670
1671 source "kernel/power/Kconfig"
1672
1673 config ARCH_SUSPEND_POSSIBLE
1674         def_bool y
1675
1676 endmenu
1677
1678 source "net/Kconfig"
1679
1680 source "drivers/Kconfig"
1681
1682 source "fs/Kconfig"
1683
1684 source "arch/arm/Kconfig.debug"
1685
1686 source "security/Kconfig"
1687
1688 source "crypto/Kconfig"
1689
1690 source "lib/Kconfig"