arch/arm/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux Kernel Configuration"
   7
   8 config ARM
   9         bool
  10         default y
  11         select HAVE_AOUT
  12         select HAVE_IDE
  13         select RTC_LIB
  14         select SYS_SUPPORTS_APM_EMULATION
  15         select GENERIC_ATOMIC64 if (!CPU_32v6K)
  16         select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  17         select HAVE_ARCH_KGDB
  18         select HAVE_KPROBES if (!XIP_KERNEL)
  19         select HAVE_KRETPROBES if (HAVE_KPROBES)
  20         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  21         select HAVE_GENERIC_DMA_COHERENT
  22         select HAVE_KERNEL_GZIP
  23         select HAVE_KERNEL_LZO
  24         select HAVE_KERNEL_LZMA
  25         select HAVE_PERF_EVENTS
  26         select PERF_USE_VMALLOC
  27         help
  28           The ARM series is a line of low-power-consumption RISC chip designs
  29           licensed by ARM Ltd and targeted at embedded applications and
  30           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  31           manufactured, but legacy ARM-based PC hardware remains popular in
  32           Europe.  There is an ARM Linux project with a web page at
  33           <http://www.arm.linux.org.uk/>.
  34
  35 config HAVE_PWM
  36         bool
  37
  38 config SYS_SUPPORTS_APM_EMULATION
  39         bool
  40
  41 config GENERIC_GPIO
  42         bool
  43
  44 config GENERIC_TIME
  45         bool
  46         default y
  47
  48 config ARCH_USES_GETTIMEOFFSET
  49         bool
  50         default n
  51
  52 config GENERIC_CLOCKEVENTS
  53         bool
  54
  55 config GENERIC_CLOCKEVENTS_BROADCAST
  56         bool
  57         depends on GENERIC_CLOCKEVENTS
  58         default y if SMP && !LOCAL_TIMERS
  59
  60 config HAVE_TCM
  61         bool
  62         select GENERIC_ALLOCATOR
  63
  64 config HAVE_PROC_CPU
  65         bool
  66
  67 config NO_IOPORT
  68         bool
  69
  70 config EISA
  71         bool
  72         ---help---
  73           The Extended Industry Standard Architecture (EISA) bus was
  74           developed as an open alternative to the IBM MicroChannel bus.
  75
  76           The EISA bus provided some of the features of the IBM MicroChannel
  77           bus while maintaining backward compatibility with cards made for
  78           the older ISA bus.  The EISA bus saw limited use between 1988 and
  79           1995 when it was made obsolete by the PCI bus.
  80
  81           Say Y here if you are building a kernel for an EISA-based machine.
  82
  83           Otherwise, say N.
  84
  85 config SBUS
  86         bool
  87
  88 config MCA
  89         bool
  90         help
  91           MicroChannel Architecture is found in some IBM PS/2 machines and
  92           laptops.  It is a bus system similar to PCI or ISA. See
  93           <file:Documentation/mca.txt> (and especially the web page given
  94           there) before attempting to build an MCA bus kernel.
  95
  96 config GENERIC_HARDIRQS
  97         bool
  98         default y
  99
 100 config STACKTRACE_SUPPORT
 101         bool
 102         default y
 103
 104 config HAVE_LATENCYTOP_SUPPORT
 105         bool
 106         depends on !SMP
 107         default y
 108
 109 config LOCKDEP_SUPPORT
 110         bool
 111         default y
 112
 113 config TRACE_IRQFLAGS_SUPPORT
 114         bool
 115         default y
 116
 117 config HARDIRQS_SW_RESEND
 118         bool
 119         default y
 120
 121 config GENERIC_IRQ_PROBE
 122         bool
 123         default y
 124
 125 config GENERIC_LOCKBREAK
 126         bool
 127         default y
 128         depends on SMP && PREEMPT
 129
 130 config RWSEM_GENERIC_SPINLOCK
 131         bool
 132         default y
 133
 134 config RWSEM_XCHGADD_ALGORITHM
 135         bool
 136
 137 config ARCH_HAS_ILOG2_U32
 138         bool
 139
 140 config ARCH_HAS_ILOG2_U64
 141         bool
 142
 143 config ARCH_HAS_CPUFREQ
 144         bool
 145         help
 146           Internal node to signify that the ARCH has CPUFREQ support
 147           and that the relevant menu configurations are displayed for
 148           it.
 149
 150 config GENERIC_HWEIGHT
 151         bool
 152         default y
 153
 154 config GENERIC_CALIBRATE_DELAY
 155         bool
 156         default y
 157
 158 config ARCH_MAY_HAVE_PC_FDC
 159         bool
 160
 161 config ZONE_DMA
 162         bool
 163
 164 config NEED_DMA_MAP_STATE
 165        def_bool y
 166
 167 config GENERIC_ISA_DMA
 168         bool
 169
 170 config FIQ
 171         bool
 172
 173 config ARCH_MTD_XIP
 174         bool
 175
 176 config GENERIC_HARDIRQS_NO__DO_IRQ
 177         def_bool y
 178
 179 config ARM_L1_CACHE_SHIFT_6
 180         bool
 181         help
 182           Setting ARM L1 cache line size to 64 Bytes.
 183
 184 config VECTORS_BASE
 185         hex
 186         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 187         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 188         default 0x00000000
 189         help
 190           The base address of exception vectors.
 191
 192 source "init/Kconfig"
 193
 194 source "kernel/Kconfig.freezer"
 195
 196 menu "System Type"
 197
 198 config MMU
 199         bool "MMU-based Paged Memory Management Support"
 200         default y
 201         help
 202           Select if you want MMU-based virtualised addressing space
 203           support by paged memory management. If unsure, say 'Y'.
 204
 205 #
 206 # The "ARM system type" choice list is ordered alphabetically by option
 207 # text.  Please add new entries in the option alphabetic order.
 208 #
 209 choice
 210         prompt "ARM system type"
 211         default ARCH_VERSATILE
 212
 213 config ARCH_AAEC2000
 214         bool "Agilent AAEC-2000 based"
 215         select CPU_ARM920T
 216         select ARM_AMBA
 217         select HAVE_CLK
 218         select ARCH_USES_GETTIMEOFFSET
 219         help
 220           This enables support for systems based on the Agilent AAEC-2000
 221
 222 config ARCH_INTEGRATOR
 223         bool "ARM Ltd. Integrator family"
 224         select ARM_AMBA
 225         select ARCH_HAS_CPUFREQ
 226         select COMMON_CLKDEV
 227         select ICST
 228         select GENERIC_CLOCKEVENTS
 229         select PLAT_VERSATILE
 230         help
 231           Support for ARM's Integrator platform.
 232
 233 config ARCH_REALVIEW
 234         bool "ARM Ltd. RealView family"
 235         select ARM_AMBA
 236         select COMMON_CLKDEV
 237         select ICST
 238         select GENERIC_CLOCKEVENTS
 239         select ARCH_WANT_OPTIONAL_GPIOLIB
 240         select PLAT_VERSATILE
 241         select ARM_TIMER_SP804
 242         select GPIO_PL061 if GPIOLIB
 243         help
 244           This enables support for ARM Ltd RealView boards.
 245
 246 config ARCH_VERSATILE
 247         bool "ARM Ltd. Versatile family"
 248         select ARM_AMBA
 249         select ARM_VIC
 250         select COMMON_CLKDEV
 251         select ICST
 252         select GENERIC_CLOCKEVENTS
 253         select ARCH_WANT_OPTIONAL_GPIOLIB
 254         select PLAT_VERSATILE
 255         select ARM_TIMER_SP804
 256         help
 257           This enables support for ARM Ltd Versatile board.
 258
 259 config ARCH_VEXPRESS
 260         bool "ARM Ltd. Versatile Express family"
 261         select ARCH_WANT_OPTIONAL_GPIOLIB
 262         select ARM_AMBA
 263         select ARM_TIMER_SP804
 264         select COMMON_CLKDEV
 265         select GENERIC_CLOCKEVENTS
 266         select HAVE_CLK
 267         select ICST
 268         select PLAT_VERSATILE
 269         help
 270           This enables support for the ARM Ltd Versatile Express boards.
 271
 272 config ARCH_AT91
 273         bool "Atmel AT91"
 274         select ARCH_REQUIRE_GPIOLIB
 275         select HAVE_CLK
 276         select ARCH_USES_GETTIMEOFFSET
 277         help
 278           This enables support for systems based on the Atmel AT91RM9200,
 279           AT91SAM9 and AT91CAP9 processors.
 280
 281 config ARCH_BCMRING
 282         bool "Broadcom BCMRING"
 283         depends on MMU
 284         select CPU_V6
 285         select ARM_AMBA
 286         select COMMON_CLKDEV
 287         select GENERIC_CLOCKEVENTS
 288         select ARCH_WANT_OPTIONAL_GPIOLIB
 289         help
 290           Support for Broadcom's BCMRing platform.
 291
 292 config ARCH_CLPS711X
 293         bool "Cirrus Logic CLPS711x/EP721x-based"
 294         select CPU_ARM720T
 295         select ARCH_USES_GETTIMEOFFSET
 296         help
 297           Support for Cirrus Logic 711x/721x based boards.
 298
 299 config ARCH_CNS3XXX
 300         bool "Cavium Networks CNS3XXX family"
 301         select CPU_V6
 302         select GENERIC_CLOCKEVENTS
 303         select ARM_GIC
 304         help
 305           Support for Cavium Networks CNS3XXX platform.
 306
 307 config ARCH_GEMINI
 308         bool "Cortina Systems Gemini"
 309         select CPU_FA526
 310         select ARCH_REQUIRE_GPIOLIB
 311         select ARCH_USES_GETTIMEOFFSET
 312         help
 313           Support for the Cortina Systems Gemini family SoCs
 314
 315 config ARCH_EBSA110
 316         bool "EBSA-110"
 317         select CPU_SA110
 318         select ISA
 319         select NO_IOPORT
 320         select ARCH_USES_GETTIMEOFFSET
 321         help
 322           This is an evaluation board for the StrongARM processor available
 323           from Digital. It has limited hardware on-board, including an
 324           Ethernet interface, two PCMCIA sockets, two serial ports and a
 325           parallel port.
 326
 327 config ARCH_EP93XX
 328         bool "EP93xx-based"
 329         select CPU_ARM920T
 330         select ARM_AMBA
 331         select ARM_VIC
 332         select COMMON_CLKDEV
 333         select ARCH_REQUIRE_GPIOLIB
 334         select ARCH_HAS_HOLES_MEMORYMODEL
 335         select ARCH_USES_GETTIMEOFFSET
 336         help
 337           This enables support for the Cirrus EP93xx series of CPUs.
 338
 339 config ARCH_FOOTBRIDGE
 340         bool "FootBridge"
 341         select CPU_SA110
 342         select FOOTBRIDGE
 343         select ARCH_USES_GETTIMEOFFSET
 344         help
 345           Support for systems based on the DC21285 companion chip
 346           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 347
 348 config ARCH_MXC
 349         bool "Freescale MXC/iMX-based"
 350         select GENERIC_CLOCKEVENTS
 351         select ARCH_REQUIRE_GPIOLIB
 352         select COMMON_CLKDEV
 353         help
 354           Support for Freescale MXC/iMX-based family of processors
 355
 356 config ARCH_STMP3XXX
 357         bool "Freescale STMP3xxx"
 358         select CPU_ARM926T
 359         select COMMON_CLKDEV
 360         select ARCH_REQUIRE_GPIOLIB
 361         select GENERIC_CLOCKEVENTS
 362         select USB_ARCH_HAS_EHCI
 363         help
 364           Support for systems based on the Freescale 3xxx CPUs.
 365
 366 config ARCH_NETX
 367         bool "Hilscher NetX based"
 368         select CPU_ARM926T
 369         select ARM_VIC
 370         select GENERIC_CLOCKEVENTS
 371         help
 372           This enables support for systems based on the Hilscher NetX Soc
 373
 374 config ARCH_H720X
 375         bool "Hynix HMS720x-based"
 376         select CPU_ARM720T
 377         select ISA_DMA_API
 378         select ARCH_USES_GETTIMEOFFSET
 379         help
 380           This enables support for systems based on the Hynix HMS720x
 381
 382 config ARCH_IOP13XX
 383         bool "IOP13xx-based"
 384         depends on MMU
 385         select CPU_XSC3
 386         select PLAT_IOP
 387         select PCI
 388         select ARCH_SUPPORTS_MSI
 389         select VMSPLIT_1G
 390         help
 391           Support for Intel's IOP13XX (XScale) family of processors.
 392
 393 config ARCH_IOP32X
 394         bool "IOP32x-based"
 395         depends on MMU
 396         select CPU_XSCALE
 397         select PLAT_IOP
 398         select PCI
 399         select ARCH_REQUIRE_GPIOLIB
 400         help
 401           Support for Intel's 80219 and IOP32X (XScale) family of
 402           processors.
 403
 404 config ARCH_IOP33X
 405         bool "IOP33x-based"
 406         depends on MMU
 407         select CPU_XSCALE
 408         select PLAT_IOP
 409         select PCI
 410         select ARCH_REQUIRE_GPIOLIB
 411         help
 412           Support for Intel's IOP33X (XScale) family of processors.
 413
 414 config ARCH_IXP23XX
 415         bool "IXP23XX-based"
 416         depends on MMU
 417         select CPU_XSC3
 418         select PCI
 419         select ARCH_USES_GETTIMEOFFSET
 420         help
 421           Support for Intel's IXP23xx (XScale) family of processors.
 422
 423 config ARCH_IXP2000
 424         bool "IXP2400/2800-based"
 425         depends on MMU
 426         select CPU_XSCALE
 427         select PCI
 428         select ARCH_USES_GETTIMEOFFSET
 429         help
 430           Support for Intel's IXP2400/2800 (XScale) family of processors.
 431
 432 config ARCH_IXP4XX
 433         bool "IXP4xx-based"
 434         depends on MMU
 435         select CPU_XSCALE
 436         select GENERIC_GPIO
 437         select GENERIC_CLOCKEVENTS
 438         select DMABOUNCE if PCI
 439         help
 440           Support for Intel's IXP4XX (XScale) family of processors.
 441
 442 config ARCH_L7200
 443         bool "LinkUp-L7200"
 444         select CPU_ARM720T
 445         select FIQ
 446         select ARCH_USES_GETTIMEOFFSET
 447         help
 448           Say Y here if you intend to run this kernel on a LinkUp Systems
 449           L7200 Software Development Board which uses an ARM720T processor.
 450           Information on this board can be obtained at:
 451
 452           <http://www.linkupsys.com/>
 453
 454           If you have any questions or comments about the Linux kernel port
 455           to this board, send e-mail to <sjhill@cotw.com>.
 456
 457 config ARCH_DOVE
 458         bool "Marvell Dove"
 459         select PCI
 460         select ARCH_REQUIRE_GPIOLIB
 461         select GENERIC_CLOCKEVENTS
 462         select PLAT_ORION
 463         help
 464           Support for the Marvell Dove SoC 88AP510
 465
 466 config ARCH_KIRKWOOD
 467         bool "Marvell Kirkwood"
 468         select CPU_FEROCEON
 469         select PCI
 470         select ARCH_REQUIRE_GPIOLIB
 471         select GENERIC_CLOCKEVENTS
 472         select PLAT_ORION
 473         help
 474           Support for the following Marvell Kirkwood series SoCs:
 475           88F6180, 88F6192 and 88F6281.
 476
 477 config ARCH_LOKI
 478         bool "Marvell Loki (88RC8480)"
 479         select CPU_FEROCEON
 480         select GENERIC_CLOCKEVENTS
 481         select PLAT_ORION
 482         help
 483           Support for the Marvell Loki (88RC8480) SoC.
 484
 485 config ARCH_MV78XX0
 486         bool "Marvell MV78xx0"
 487         select CPU_FEROCEON
 488         select PCI
 489         select ARCH_REQUIRE_GPIOLIB
 490         select GENERIC_CLOCKEVENTS
 491         select PLAT_ORION
 492         help
 493           Support for the following Marvell MV78xx0 series SoCs:
 494           MV781x0, MV782x0.
 495
 496 config ARCH_ORION5X
 497         bool "Marvell Orion"
 498         depends on MMU
 499         select CPU_FEROCEON
 500         select PCI
 501         select ARCH_REQUIRE_GPIOLIB
 502         select GENERIC_CLOCKEVENTS
 503         select PLAT_ORION
 504         help
 505           Support for the following Marvell Orion 5x series SoCs:
 506           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 507           Orion-2 (5281), Orion-1-90 (6183).
 508
 509 config ARCH_MMP
 510         bool "Marvell PXA168/910/MMP2"
 511         depends on MMU
 512         select ARCH_REQUIRE_GPIOLIB
 513         select COMMON_CLKDEV
 514         select GENERIC_CLOCKEVENTS
 515         select TICK_ONESHOT
 516         select PLAT_PXA
 517         help
 518           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 519
 520 config ARCH_KS8695
 521         bool "Micrel/Kendin KS8695"
 522         select CPU_ARM922T
 523         select ARCH_REQUIRE_GPIOLIB
 524         select ARCH_USES_GETTIMEOFFSET
 525         help
 526           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 527           System-on-Chip devices.
 528
 529 config ARCH_NS9XXX
 530         bool "NetSilicon NS9xxx"
 531         select CPU_ARM926T
 532         select GENERIC_GPIO
 533         select GENERIC_CLOCKEVENTS
 534         select HAVE_CLK
 535         help
 536           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 537           System.
 538
 539           <http://www.digi.com/products/microprocessors/index.jsp>
 540
 541 config ARCH_W90X900
 542         bool "Nuvoton W90X900 CPU"
 543         select CPU_ARM926T
 544         select ARCH_REQUIRE_GPIOLIB
 545         select COMMON_CLKDEV
 546         select GENERIC_CLOCKEVENTS
 547         help
 548           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 549           At present, the w90x900 has been renamed nuc900, regarding
 550           the ARM series product line, you can login the following
 551           link address to know more.
 552
 553           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 554                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 555
 556 config ARCH_NUC93X
 557         bool "Nuvoton NUC93X CPU"
 558         select CPU_ARM926T
 559         select COMMON_CLKDEV
 560         help
 561           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 562           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 563
 564 config ARCH_PNX4008
 565         bool "Philips Nexperia PNX4008 Mobile"
 566         select CPU_ARM926T
 567         select COMMON_CLKDEV
 568         select ARCH_USES_GETTIMEOFFSET
 569         help
 570           This enables support for Philips PNX4008 mobile platform.
 571
 572 config ARCH_PXA
 573         bool "PXA2xx/PXA3xx-based"
 574         depends on MMU
 575         select ARCH_MTD_XIP
 576         select ARCH_HAS_CPUFREQ
 577         select COMMON_CLKDEV
 578         select ARCH_REQUIRE_GPIOLIB
 579         select GENERIC_CLOCKEVENTS
 580         select TICK_ONESHOT
 581         select PLAT_PXA
 582         help
 583           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 584
 585 config ARCH_MSM
 586         bool "Qualcomm MSM"
 587         select HAVE_CLK
 588         select GENERIC_CLOCKEVENTS
 589         help
 590           Support for Qualcomm MSM/QSD based systems.  This runs on the
 591           apps processor of the MSM/QSD and depends on a shared memory
 592           interface to the modem processor which runs the baseband
 593           stack and controls some vital subsystems
 594           (clock and power control, etc).
 595
 596 config ARCH_SHMOBILE
 597         bool "Renesas SH-Mobile"
 598         help
 599           Support for Renesas's SH-Mobile ARM platforms
 600
 601 config ARCH_RPC
 602         bool "RiscPC"
 603         select ARCH_ACORN
 604         select FIQ
 605         select TIMER_ACORN
 606         select ARCH_MAY_HAVE_PC_FDC
 607         select HAVE_PATA_PLATFORM
 608         select ISA_DMA_API
 609         select NO_IOPORT
 610         select ARCH_SPARSEMEM_ENABLE
 611         select ARCH_USES_GETTIMEOFFSET
 612         help
 613           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 614           CD-ROM interface, serial and parallel port, and the floppy drive.
 615
 616 config ARCH_SA1100
 617         bool "SA1100-based"
 618         select CPU_SA1100
 619         select ISA
 620         select ARCH_SPARSEMEM_ENABLE
 621         select ARCH_MTD_XIP
 622         select ARCH_HAS_CPUFREQ
 623         select CPU_FREQ
 624         select GENERIC_CLOCKEVENTS
 625         select HAVE_CLK
 626         select TICK_ONESHOT
 627         select ARCH_REQUIRE_GPIOLIB
 628         help
 629           Support for StrongARM 11x0 based boards.
 630
 631 config ARCH_S3C2410
 632         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 633         select GENERIC_GPIO
 634         select ARCH_HAS_CPUFREQ
 635         select HAVE_CLK
 636         select ARCH_USES_GETTIMEOFFSET
 637         help
 638           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 639           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 640           the Samsung SMDK2410 development board (and derivatives).
 641
 642           Note, the S3C2416 and the S3C2450 are so close that they even share
 643           the same SoC ID code. This means that there is no seperate machine
 644           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 645
 646 config ARCH_S3C64XX
 647         bool "Samsung S3C64XX"
 648         select PLAT_SAMSUNG
 649         select CPU_V6
 650         select ARM_VIC
 651         select HAVE_CLK
 652         select NO_IOPORT
 653         select ARCH_USES_GETTIMEOFFSET
 654         select ARCH_HAS_CPUFREQ
 655         select ARCH_REQUIRE_GPIOLIB
 656         select SAMSUNG_CLKSRC
 657         select SAMSUNG_IRQ_VIC_TIMER
 658         select SAMSUNG_IRQ_UART
 659         select S3C_GPIO_TRACK
 660         select S3C_GPIO_PULL_UPDOWN
 661         select S3C_GPIO_CFG_S3C24XX
 662         select S3C_GPIO_CFG_S3C64XX
 663         select S3C_DEV_NAND
 664         select USB_ARCH_HAS_OHCI
 665         select SAMSUNG_GPIOLIB_4BIT
 666         help
 667           Samsung S3C64XX series based systems
 668
 669 config ARCH_S5P6440
 670         bool "Samsung S5P6440"
 671         select CPU_V6
 672         select GENERIC_GPIO
 673         select HAVE_CLK
 674         select ARCH_USES_GETTIMEOFFSET
 675         help
 676           Samsung S5P6440 CPU based systems
 677
 678 config ARCH_S5P6442
 679         bool "Samsung S5P6442"
 680         select CPU_V6
 681         select GENERIC_GPIO
 682         select HAVE_CLK
 683         select ARCH_USES_GETTIMEOFFSET
 684         help
 685           Samsung S5P6442 CPU based systems
 686
 687 config ARCH_S5PC100
 688         bool "Samsung S5PC100"
 689         select GENERIC_GPIO
 690         select HAVE_CLK
 691         select CPU_V7
 692         select ARM_L1_CACHE_SHIFT_6
 693         select ARCH_USES_GETTIMEOFFSET
 694         help
 695           Samsung S5PC100 series based systems
 696
 697 config ARCH_S5PV210
 698         bool "Samsung S5PV210/S5PC110"
 699         select CPU_V7
 700         select GENERIC_GPIO
 701         select HAVE_CLK
 702         select ARM_L1_CACHE_SHIFT_6
 703         select ARCH_USES_GETTIMEOFFSET
 704         help
 705           Samsung S5PV210/S5PC110 series based systems
 706
 707 config ARCH_SHARK
 708         bool "Shark"
 709         select CPU_SA110
 710         select ISA
 711         select ISA_DMA
 712         select ZONE_DMA
 713         select PCI
 714         select ARCH_USES_GETTIMEOFFSET
 715         help
 716           Support for the StrongARM based Digital DNARD machine, also known
 717           as "Shark" (<http://www.shark-linux.de/shark.html>).
 718
 719 config ARCH_LH7A40X
 720         bool "Sharp LH7A40X"
 721         select CPU_ARM922T
 722         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 723         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 724         select ARCH_USES_GETTIMEOFFSET
 725         help
 726           Say Y here for systems based on one of the Sharp LH7A40X
 727           System on a Chip processors.  These CPUs include an ARM922T
 728           core with a wide array of integrated devices for
 729           hand-held and low-power applications.
 730
 731 config ARCH_U300
 732         bool "ST-Ericsson U300 Series"
 733         depends on MMU
 734         select CPU_ARM926T
 735         select HAVE_TCM
 736         select ARM_AMBA
 737         select ARM_VIC
 738         select GENERIC_CLOCKEVENTS
 739         select COMMON_CLKDEV
 740         select GENERIC_GPIO
 741         help
 742           Support for ST-Ericsson U300 series mobile platforms.
 743
 744 config ARCH_U8500
 745         bool "ST-Ericsson U8500 Series"
 746         select CPU_V7
 747         select ARM_AMBA
 748         select GENERIC_CLOCKEVENTS
 749         select COMMON_CLKDEV
 750         select ARCH_REQUIRE_GPIOLIB
 751         help
 752           Support for ST-Ericsson's Ux500 architecture
 753
 754 config ARCH_NOMADIK
 755         bool "STMicroelectronics Nomadik"
 756         select ARM_AMBA
 757         select ARM_VIC
 758         select CPU_ARM926T
 759         select COMMON_CLKDEV
 760         select GENERIC_CLOCKEVENTS
 761         select ARCH_REQUIRE_GPIOLIB
 762         help
 763           Support for the Nomadik platform by ST-Ericsson
 764
 765 config ARCH_DAVINCI
 766         bool "TI DaVinci"
 767         select GENERIC_CLOCKEVENTS
 768         select ARCH_REQUIRE_GPIOLIB
 769         select ZONE_DMA
 770         select HAVE_IDE
 771         select COMMON_CLKDEV
 772         select GENERIC_ALLOCATOR
 773         select ARCH_HAS_HOLES_MEMORYMODEL
 774         help
 775           Support for TI's DaVinci platform.
 776
 777 config ARCH_OMAP
 778         bool "TI OMAP"
 779         select HAVE_CLK
 780         select ARCH_REQUIRE_GPIOLIB
 781         select ARCH_HAS_CPUFREQ
 782         select GENERIC_CLOCKEVENTS
 783         select ARCH_HAS_HOLES_MEMORYMODEL
 784         help
 785           Support for TI's OMAP platform (OMAP1 and OMAP2).
 786
 787 config PLAT_SPEAR
 788         bool "ST SPEAr"
 789         select ARM_AMBA
 790         select ARCH_REQUIRE_GPIOLIB
 791         select COMMON_CLKDEV
 792         select GENERIC_CLOCKEVENTS
 793         select HAVE_CLK
 794         help
 795           Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
 796
 797 endchoice
 798
 799 #
 800 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 801 # Kconfigs may be included either alphabetically (according to the
 802 # plat- suffix) or along side the corresponding mach-* source.
 803 #
 804 source "arch/arm/mach-aaec2000/Kconfig"
 805
 806 source "arch/arm/mach-at91/Kconfig"
 807
 808 source "arch/arm/mach-bcmring/Kconfig"
 809
 810 source "arch/arm/mach-clps711x/Kconfig"
 811
 812 source "arch/arm/mach-cns3xxx/Kconfig"
 813
 814 source "arch/arm/mach-davinci/Kconfig"
 815
 816 source "arch/arm/mach-dove/Kconfig"
 817
 818 source "arch/arm/mach-ep93xx/Kconfig"
 819
 820 source "arch/arm/mach-footbridge/Kconfig"
 821
 822 source "arch/arm/mach-gemini/Kconfig"
 823
 824 source "arch/arm/mach-h720x/Kconfig"
 825
 826 source "arch/arm/mach-integrator/Kconfig"
 827
 828 source "arch/arm/mach-iop32x/Kconfig"
 829
 830 source "arch/arm/mach-iop33x/Kconfig"
 831
 832 source "arch/arm/mach-iop13xx/Kconfig"
 833
 834 source "arch/arm/mach-ixp4xx/Kconfig"
 835
 836 source "arch/arm/mach-ixp2000/Kconfig"
 837
 838 source "arch/arm/mach-ixp23xx/Kconfig"
 839
 840 source "arch/arm/mach-kirkwood/Kconfig"
 841
 842 source "arch/arm/mach-ks8695/Kconfig"
 843
 844 source "arch/arm/mach-lh7a40x/Kconfig"
 845
 846 source "arch/arm/mach-loki/Kconfig"
 847
 848 source "arch/arm/mach-msm/Kconfig"
 849
 850 source "arch/arm/mach-mv78xx0/Kconfig"
 851
 852 source "arch/arm/plat-mxc/Kconfig"
 853
 854 source "arch/arm/mach-netx/Kconfig"
 855
 856 source "arch/arm/mach-nomadik/Kconfig"
 857 source "arch/arm/plat-nomadik/Kconfig"
 858
 859 source "arch/arm/mach-ns9xxx/Kconfig"
 860
 861 source "arch/arm/mach-nuc93x/Kconfig"
 862
 863 source "arch/arm/plat-omap/Kconfig"
 864
 865 source "arch/arm/mach-omap1/Kconfig"
 866
 867 source "arch/arm/mach-omap2/Kconfig"
 868
 869 source "arch/arm/mach-orion5x/Kconfig"
 870
 871 source "arch/arm/mach-pxa/Kconfig"
 872 source "arch/arm/plat-pxa/Kconfig"
 873
 874 source "arch/arm/mach-mmp/Kconfig"
 875
 876 source "arch/arm/mach-realview/Kconfig"
 877
 878 source "arch/arm/mach-sa1100/Kconfig"
 879
 880 source "arch/arm/plat-samsung/Kconfig"
 881 source "arch/arm/plat-s3c24xx/Kconfig"
 882 source "arch/arm/plat-s5p/Kconfig"
 883
 884 source "arch/arm/plat-spear/Kconfig"
 885
 886 if ARCH_S3C2410
 887 source "arch/arm/mach-s3c2400/Kconfig"
 888 source "arch/arm/mach-s3c2410/Kconfig"
 889 source "arch/arm/mach-s3c2412/Kconfig"
 890 source "arch/arm/mach-s3c2416/Kconfig"
 891 source "arch/arm/mach-s3c2440/Kconfig"
 892 source "arch/arm/mach-s3c2443/Kconfig"
 893 endif
 894
 895 if ARCH_S3C64XX
 896 source "arch/arm/mach-s3c64xx/Kconfig"
 897 endif
 898
 899 source "arch/arm/mach-s5p6440/Kconfig"
 900
 901 source "arch/arm/mach-s5p6442/Kconfig"
 902
 903 source "arch/arm/mach-s5pc100/Kconfig"
 904
 905 source "arch/arm/mach-s5pv210/Kconfig"
 906
 907 source "arch/arm/mach-shmobile/Kconfig"
 908
 909 source "arch/arm/plat-stmp3xxx/Kconfig"
 910
 911 source "arch/arm/mach-u300/Kconfig"
 912
 913 source "arch/arm/mach-ux500/Kconfig"
 914
 915 source "arch/arm/mach-versatile/Kconfig"
 916
 917 source "arch/arm/mach-vexpress/Kconfig"
 918
 919 source "arch/arm/mach-w90x900/Kconfig"
 920
 921 # Definitions to make life easier
 922 config ARCH_ACORN
 923         bool
 924
 925 config PLAT_IOP
 926         bool
 927         select GENERIC_CLOCKEVENTS
 928
 929 config PLAT_ORION
 930         bool
 931
 932 config PLAT_PXA
 933         bool
 934
 935 config PLAT_VERSATILE
 936         bool
 937
 938 config ARM_TIMER_SP804
 939         bool
 940
 941 source arch/arm/mm/Kconfig
 942
 943 config IWMMXT
 944         bool "Enable iWMMXt support"
 945         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 946         default y if PXA27x || PXA3xx || ARCH_MMP
 947         help
 948           Enable support for iWMMXt context switching at run time if
 949           running on a CPU that supports it.
 950
 951 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 952 config XSCALE_PMU
 953         bool
 954         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 955         default y
 956
 957 config CPU_HAS_PMU
 958         depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
 959                    (!ARCH_OMAP3 || OMAP3_EMU)
 960         default y
 961         bool
 962
 963 if !MMU
 964 source "arch/arm/Kconfig-nommu"
 965 endif
 966
 967 config ARM_ERRATA_411920
 968         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 969         depends on CPU_V6 && !SMP
 970         help
 971           Invalidation of the Instruction Cache operation can
 972           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 973           It does not affect the MPCore. This option enables the ARM Ltd.
 974           recommended workaround.
 975
 976 config ARM_ERRATA_430973
 977         bool "ARM errata: Stale prediction on replaced interworking branch"
 978         depends on CPU_V7
 979         help
 980           This option enables the workaround for the 430973 Cortex-A8
 981           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 982           interworking branch is replaced with another code sequence at the
 983           same virtual address, whether due to self-modifying code or virtual
 984           to physical address re-mapping, Cortex-A8 does not recover from the
 985           stale interworking branch prediction. This results in Cortex-A8
 986           executing the new code sequence in the incorrect ARM or Thumb state.
 987           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 988           and also flushes the branch target cache at every context switch.
 989           Note that setting specific bits in the ACTLR register may not be
 990           available in non-secure mode.
 991
 992 config ARM_ERRATA_458693
 993         bool "ARM errata: Processor deadlock when a false hazard is created"
 994         depends on CPU_V7
 995         help
 996           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 997           erratum. For very specific sequences of memory operations, it is
 998           possible for a hazard condition intended for a cache line to instead
 999           be incorrectly associated with a different cache line. This false
1000           hazard might then cause a processor deadlock. The workaround enables
1001           the L1 caching of the NEON accesses and disables the PLD instruction
1002           in the ACTLR register. Note that setting specific bits in the ACTLR
1003           register may not be available in non-secure mode.
1004
1005 config ARM_ERRATA_460075
1006         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1007         depends on CPU_V7
1008         help
1009           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1010           erratum. Any asynchronous access to the L2 cache may encounter a
1011           situation in which recent store transactions to the L2 cache are lost
1012           and overwritten with stale memory contents from external memory. The
1013           workaround disables the write-allocate mode for the L2 cache via the
1014           ACTLR register. Note that setting specific bits in the ACTLR register
1015           may not be available in non-secure mode.
1016
1017 config PL310_ERRATA_588369
1018         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1019         depends on CACHE_L2X0 && ARCH_OMAP4
1020         help
1021            The PL310 L2 cache controller implements three types of Clean &
1022            Invalidate maintenance operations: by Physical Address
1023            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1024            They are architecturally defined to behave as the execution of a
1025            clean operation followed immediately by an invalidate operation,
1026            both performing to the same memory location. This functionality
1027            is not correctly implemented in PL310 as clean lines are not
1028            invalidated as a result of these operations. Note that this errata
1029            uses Texas Instrument's secure monitor api.
1030 endmenu
1031
1032 source "arch/arm/common/Kconfig"
1033
1034 config FORCE_MAX_ZONEORDER
1035         int
1036         depends on SA1111
1037         default "9"
1038
1039 menu "Bus support"
1040
1041 config ARM_AMBA
1042         bool
1043
1044 config ISA
1045         bool
1046         help
1047           Find out whether you have ISA slots on your motherboard.  ISA is the
1048           name of a bus system, i.e. the way the CPU talks to the other stuff
1049           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1050           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1051           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1052
1053 # Select ISA DMA controller support
1054 config ISA_DMA
1055         bool
1056         select ISA_DMA_API
1057
1058 # Select ISA DMA interface
1059 config ISA_DMA_API
1060         bool
1061
1062 config PCI
1063         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1064         help
1065           Find out whether you have a PCI motherboard. PCI is the name of a
1066           bus system, i.e. the way the CPU talks to the other stuff inside
1067           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1068           VESA. If you have PCI, say Y, otherwise N.
1069
1070 config PCI_DOMAINS
1071         bool
1072         depends on PCI
1073
1074 config PCI_SYSCALL
1075         def_bool PCI
1076
1077 # Select the host bridge type
1078 config PCI_HOST_VIA82C505
1079         bool
1080         depends on PCI && ARCH_SHARK
1081         default y
1082
1083 config PCI_HOST_ITE8152
1084         bool
1085         depends on PCI && MACH_ARMCORE
1086         default y
1087         select DMABOUNCE
1088
1089 source "drivers/pci/Kconfig"
1090
1091 source "drivers/pcmcia/Kconfig"
1092
1093 endmenu
1094
1095 menu "Kernel Features"
1096
1097 source "kernel/time/Kconfig"
1098
1099 config SMP
1100         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1101         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1102                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1103                  ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1104         depends on GENERIC_CLOCKEVENTS
1105         select USE_GENERIC_SMP_HELPERS
1106         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1107         help
1108           This enables support for systems with more than one CPU. If you have
1109           a system with only one CPU, like most personal computers, say N. If
1110           you have a system with more than one CPU, say Y.
1111
1112           If you say N here, the kernel will run on single and multiprocessor
1113           machines, but will use only one CPU of a multiprocessor machine. If
1114           you say Y here, the kernel will run on many, but not all, single
1115           processor machines. On a single processor machine, the kernel will
1116           run faster if you say N here.
1117
1118           See also <file:Documentation/i386/IO-APIC.txt>,
1119           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1120           <http://www.linuxdoc.org/docs.html#howto>.
1121
1122           If you don't know what to do here, say N.
1123
1124 config HAVE_ARM_SCU
1125         bool
1126         depends on SMP
1127         help
1128           This option enables support for the ARM system coherency unit
1129
1130 config HAVE_ARM_TWD
1131         bool
1132         depends on SMP
1133         help
1134           This options enables support for the ARM timer and watchdog unit
1135
1136 choice
1137         prompt "Memory split"
1138         default VMSPLIT_3G
1139         help
1140           Select the desired split between kernel and user memory.
1141
1142           If you are not absolutely sure what you are doing, leave this
1143           option alone!
1144
1145         config VMSPLIT_3G
1146                 bool "3G/1G user/kernel split"
1147         config VMSPLIT_2G
1148                 bool "2G/2G user/kernel split"
1149         config VMSPLIT_1G
1150                 bool "1G/3G user/kernel split"
1151 endchoice
1152
1153 config PAGE_OFFSET
1154         hex
1155         default 0x40000000 if VMSPLIT_1G
1156         default 0x80000000 if VMSPLIT_2G
1157         default 0xC0000000
1158
1159 config NR_CPUS
1160         int "Maximum number of CPUs (2-32)"
1161         range 2 32
1162         depends on SMP
1163         default "4"
1164
1165 config HOTPLUG_CPU
1166         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1167         depends on SMP && HOTPLUG && EXPERIMENTAL
1168         help
1169           Say Y here to experiment with turning CPUs off and on.  CPUs
1170           can be controlled through /sys/devices/system/cpu.
1171
1172 config LOCAL_TIMERS
1173         bool "Use local timer interrupts"
1174         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1175                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1176         default y
1177         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1178         help
1179           Enable support for local timers on SMP platforms, rather then the
1180           legacy IPI broadcast method.  Local timers allows the system
1181           accounting to be spread across the timer interval, preventing a
1182           "thundering herd" at every timer tick.
1183
1184 source kernel/Kconfig.preempt
1185
1186 config HZ
1187         int
1188         default 128 if ARCH_L7200
1189         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1190         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1191         default AT91_TIMER_HZ if ARCH_AT91
1192         default 100
1193
1194 config THUMB2_KERNEL
1195         bool "Compile the kernel in Thumb-2 mode"
1196         depends on CPU_V7 && EXPERIMENTAL
1197         select AEABI
1198         select ARM_ASM_UNIFIED
1199         help
1200           By enabling this option, the kernel will be compiled in
1201           Thumb-2 mode. A compiler/assembler that understand the unified
1202           ARM-Thumb syntax is needed.
1203
1204           If unsure, say N.
1205
1206 config ARM_ASM_UNIFIED
1207         bool
1208
1209 config AEABI
1210         bool "Use the ARM EABI to compile the kernel"
1211         help
1212           This option allows for the kernel to be compiled using the latest
1213           ARM ABI (aka EABI).  This is only useful if you are using a user
1214           space environment that is also compiled with EABI.
1215
1216           Since there are major incompatibilities between the legacy ABI and
1217           EABI, especially with regard to structure member alignment, this
1218           option also changes the kernel syscall calling convention to
1219           disambiguate both ABIs and allow for backward compatibility support
1220           (selected with CONFIG_OABI_COMPAT).
1221
1222           To use this you need GCC version 4.0.0 or later.
1223
1224 config OABI_COMPAT
1225         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1226         depends on AEABI && EXPERIMENTAL
1227         default y
1228         help
1229           This option preserves the old syscall interface along with the
1230           new (ARM EABI) one. It also provides a compatibility layer to
1231           intercept syscalls that have structure arguments which layout
1232           in memory differs between the legacy ABI and the new ARM EABI
1233           (only for non "thumb" binaries). This option adds a tiny
1234           overhead to all syscalls and produces a slightly larger kernel.
1235           If you know you'll be using only pure EABI user space then you
1236           can say N here. If this option is not selected and you attempt
1237           to execute a legacy ABI binary then the result will be
1238           UNPREDICTABLE (in fact it can be predicted that it won't work
1239           at all). If in doubt say Y.
1240
1241 config ARCH_HAS_HOLES_MEMORYMODEL
1242         bool
1243
1244 # Discontigmem is deprecated
1245 config ARCH_DISCONTIGMEM_ENABLE
1246         bool
1247
1248 config ARCH_SPARSEMEM_ENABLE
1249         bool
1250
1251 config ARCH_SPARSEMEM_DEFAULT
1252         def_bool ARCH_SPARSEMEM_ENABLE
1253
1254 config ARCH_SELECT_MEMORY_MODEL
1255         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1256
1257 config NODES_SHIFT
1258         int
1259         default "4" if ARCH_LH7A40X
1260         default "2"
1261         depends on NEED_MULTIPLE_NODES
1262
1263 config HIGHMEM
1264         bool "High Memory Support (EXPERIMENTAL)"
1265         depends on MMU && EXPERIMENTAL
1266         help
1267           The address space of ARM processors is only 4 Gigabytes large
1268           and it has to accommodate user address space, kernel address
1269           space as well as some memory mapped IO. That means that, if you
1270           have a large amount of physical memory and/or IO, not all of the
1271           memory can be "permanently mapped" by the kernel. The physical
1272           memory that is not permanently mapped is called "high memory".
1273
1274           Depending on the selected kernel/user memory split, minimum
1275           vmalloc space and actual amount of RAM, you may not need this
1276           option which should result in a slightly faster kernel.
1277
1278           If unsure, say n.
1279
1280 config HIGHPTE
1281         bool "Allocate 2nd-level pagetables from highmem"
1282         depends on HIGHMEM
1283         depends on !OUTER_CACHE
1284
1285 config HW_PERF_EVENTS
1286         bool "Enable hardware performance counter support for perf events"
1287         depends on PERF_EVENTS && CPU_HAS_PMU
1288         default y
1289         help
1290           Enable hardware performance counter support for perf events. If
1291           disabled, perf events will use software events only.
1292
1293 source "mm/Kconfig"
1294
1295 config LEDS
1296         bool "Timer and CPU usage LEDs"
1297         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1298                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1299                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1300                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1301                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1302                    ARCH_AT91 || ARCH_DAVINCI || \
1303                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1304         help
1305           If you say Y here, the LEDs on your machine will be used
1306           to provide useful information about your current system status.
1307
1308           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1309           be able to select which LEDs are active using the options below. If
1310           you are compiling a kernel for the EBSA-110 or the LART however, the
1311           red LED will simply flash regularly to indicate that the system is
1312           still functional. It is safe to say Y here if you have a CATS
1313           system, but the driver will do nothing.
1314
1315 config LEDS_TIMER
1316         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1317                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1318                             || MACH_OMAP_PERSEUS2
1319         depends on LEDS
1320         depends on !GENERIC_CLOCKEVENTS
1321         default y if ARCH_EBSA110
1322         help
1323           If you say Y here, one of the system LEDs (the green one on the
1324           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1325           will flash regularly to indicate that the system is still
1326           operational. This is mainly useful to kernel hackers who are
1327           debugging unstable kernels.
1328
1329           The LART uses the same LED for both Timer LED and CPU usage LED
1330           functions. You may choose to use both, but the Timer LED function
1331           will overrule the CPU usage LED.
1332
1333 config LEDS_CPU
1334         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1335                         !ARCH_OMAP) \
1336                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1337                         || MACH_OMAP_PERSEUS2
1338         depends on LEDS
1339         help
1340           If you say Y here, the red LED will be used to give a good real
1341           time indication of CPU usage, by lighting whenever the idle task
1342           is not currently executing.
1343
1344           The LART uses the same LED for both Timer LED and CPU usage LED
1345           functions. You may choose to use both, but the Timer LED function
1346           will overrule the CPU usage LED.
1347
1348 config ALIGNMENT_TRAP
1349         bool
1350         depends on CPU_CP15_MMU
1351         default y if !ARCH_EBSA110
1352         select HAVE_PROC_CPU if PROC_FS
1353         help
1354           ARM processors cannot fetch/store information which is not
1355           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1356           address divisible by 4. On 32-bit ARM processors, these non-aligned
1357           fetch/store instructions will be emulated in software if you say
1358           here, which has a severe performance impact. This is necessary for
1359           correct operation of some network protocols. With an IP-only
1360           configuration it is safe to say N, otherwise say Y.
1361
1362 config UACCESS_WITH_MEMCPY
1363         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1364         depends on MMU && EXPERIMENTAL
1365         default y if CPU_FEROCEON
1366         help
1367           Implement faster copy_to_user and clear_user methods for CPU
1368           cores where a 8-word STM instruction give significantly higher
1369           memory write throughput than a sequence of individual 32bit stores.
1370
1371           A possible side effect is a slight increase in scheduling latency
1372           between threads sharing the same address space if they invoke
1373           such copy operations with large buffers.
1374
1375           However, if the CPU data cache is using a write-allocate mode,
1376           this option is unlikely to provide any performance gain.
1377
1378 endmenu
1379
1380 menu "Boot options"
1381
1382 # Compressed boot loader in ROM.  Yes, we really want to ask about
1383 # TEXT and BSS so we preserve their values in the config files.
1384 config ZBOOT_ROM_TEXT
1385         hex "Compressed ROM boot loader base address"
1386         default "0"
1387         help
1388           The physical address at which the ROM-able zImage is to be
1389           placed in the target.  Platforms which normally make use of
1390           ROM-able zImage formats normally set this to a suitable
1391           value in their defconfig file.
1392
1393           If ZBOOT_ROM is not enabled, this has no effect.
1394
1395 config ZBOOT_ROM_BSS
1396         hex "Compressed ROM boot loader BSS address"
1397         default "0"
1398         help
1399           The base address of an area of read/write memory in the target
1400           for the ROM-able zImage which must be available while the
1401           decompressor is running. It must be large enough to hold the
1402           entire decompressed kernel plus an additional 128 KiB.
1403           Platforms which normally make use of ROM-able zImage formats
1404           normally set this to a suitable value in their defconfig file.
1405
1406           If ZBOOT_ROM is not enabled, this has no effect.
1407
1408 config ZBOOT_ROM
1409         bool "Compressed boot loader in ROM/flash"
1410         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1411         help
1412           Say Y here if you intend to execute your compressed kernel image
1413           (zImage) directly from ROM or flash.  If unsure, say N.
1414
1415 config CMDLINE
1416         string "Default kernel command string"
1417         default ""
1418         help
1419           On some architectures (EBSA110 and CATS), there is currently no way
1420           for the boot loader to pass arguments to the kernel. For these
1421           architectures, you should supply some command-line options at build
1422           time by entering them here. As a minimum, you should specify the
1423           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1424
1425 config CMDLINE_FORCE
1426         bool "Always use the default kernel command string"
1427         depends on CMDLINE != ""
1428         help
1429           Always use the default kernel command string, even if the boot
1430           loader passes other arguments to the kernel.
1431           This is useful if you cannot or don't want to change the
1432           command-line options your boot loader passes to the kernel.
1433
1434           If unsure, say N.
1435
1436 config XIP_KERNEL
1437         bool "Kernel Execute-In-Place from ROM"
1438         depends on !ZBOOT_ROM
1439         help
1440           Execute-In-Place allows the kernel to run from non-volatile storage
1441           directly addressable by the CPU, such as NOR flash. This saves RAM
1442           space since the text section of the kernel is not loaded from flash
1443           to RAM.  Read-write sections, such as the data section and stack,
1444           are still copied to RAM.  The XIP kernel is not compressed since
1445           it has to run directly from flash, so it will take more space to
1446           store it.  The flash address used to link the kernel object files,
1447           and for storing it, is configuration dependent. Therefore, if you
1448           say Y here, you must know the proper physical address where to
1449           store the kernel image depending on your own flash memory usage.
1450
1451           Also note that the make target becomes "make xipImage" rather than
1452           "make zImage" or "make Image".  The final kernel binary to put in
1453           ROM memory will be arch/arm/boot/xipImage.
1454
1455           If unsure, say N.
1456
1457 config XIP_PHYS_ADDR
1458         hex "XIP Kernel Physical Location"
1459         depends on XIP_KERNEL
1460         default "0x00080000"
1461         help
1462           This is the physical address in your flash memory the kernel will
1463           be linked for and stored to.  This address is dependent on your
1464           own flash usage.
1465
1466 config KEXEC
1467         bool "Kexec system call (EXPERIMENTAL)"
1468         depends on EXPERIMENTAL
1469         help
1470           kexec is a system call that implements the ability to shutdown your
1471           current kernel, and to start another kernel.  It is like a reboot
1472           but it is independent of the system firmware.   And like a reboot
1473           you can start any kernel with it, not just Linux.
1474
1475           It is an ongoing process to be certain the hardware in a machine
1476           is properly shutdown, so do not be surprised if this code does not
1477           initially work for you.  It may help to enable device hotplugging
1478           support.
1479
1480 config ATAGS_PROC
1481         bool "Export atags in procfs"
1482         depends on KEXEC
1483         default y
1484         help
1485           Should the atags used to boot the kernel be exported in an "atags"
1486           file in procfs. Useful with kexec.
1487
1488 endmenu
1489
1490 menu "CPU Power Management"
1491
1492 if ARCH_HAS_CPUFREQ
1493
1494 source "drivers/cpufreq/Kconfig"
1495
1496 config CPU_FREQ_SA1100
1497         bool
1498
1499 config CPU_FREQ_SA1110
1500         bool
1501
1502 config CPU_FREQ_INTEGRATOR
1503         tristate "CPUfreq driver for ARM Integrator CPUs"
1504         depends on ARCH_INTEGRATOR && CPU_FREQ
1505         default y
1506         help
1507           This enables the CPUfreq driver for ARM Integrator CPUs.
1508
1509           For details, take a look at <file:Documentation/cpu-freq>.
1510
1511           If in doubt, say Y.
1512
1513 config CPU_FREQ_PXA
1514         bool
1515         depends on CPU_FREQ && ARCH_PXA && PXA25x
1516         default y
1517         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1518
1519 config CPU_FREQ_S3C64XX
1520         bool "CPUfreq support for Samsung S3C64XX CPUs"
1521         depends on CPU_FREQ && CPU_S3C6410
1522
1523 config CPU_FREQ_S3C
1524         bool
1525         help
1526           Internal configuration node for common cpufreq on Samsung SoC
1527
1528 config CPU_FREQ_S3C24XX
1529         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1530         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1531         select CPU_FREQ_S3C
1532         help
1533           This enables the CPUfreq driver for the Samsung S3C24XX family
1534           of CPUs.
1535
1536           For details, take a look at <file:Documentation/cpu-freq>.
1537
1538           If in doubt, say N.
1539
1540 config CPU_FREQ_S3C24XX_PLL
1541         bool "Support CPUfreq changing of PLL frequency"
1542         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1543         help
1544           Compile in support for changing the PLL frequency from the
1545           S3C24XX series CPUfreq driver. The PLL takes time to settle
1546           after a frequency change, so by default it is not enabled.
1547
1548           This also means that the PLL tables for the selected CPU(s) will
1549           be built which may increase the size of the kernel image.
1550
1551 config CPU_FREQ_S3C24XX_DEBUG
1552         bool "Debug CPUfreq Samsung driver core"
1553         depends on CPU_FREQ_S3C24XX
1554         help
1555           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1556
1557 config CPU_FREQ_S3C24XX_IODEBUG
1558         bool "Debug CPUfreq Samsung driver IO timing"
1559         depends on CPU_FREQ_S3C24XX
1560         help
1561           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1562
1563 config CPU_FREQ_S3C24XX_DEBUGFS
1564         bool "Export debugfs for CPUFreq"
1565         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1566         help
1567           Export status information via debugfs.
1568
1569 endif
1570
1571 source "drivers/cpuidle/Kconfig"
1572
1573 endmenu
1574
1575 menu "Floating point emulation"
1576
1577 comment "At least one emulation must be selected"
1578
1579 config FPE_NWFPE
1580         bool "NWFPE math emulation"
1581         depends on !AEABI || OABI_COMPAT
1582         ---help---
1583           Say Y to include the NWFPE floating point emulator in the kernel.
1584           This is necessary to run most binaries. Linux does not currently
1585           support floating point hardware so you need to say Y here even if
1586           your machine has an FPA or floating point co-processor podule.
1587
1588           You may say N here if you are going to load the Acorn FPEmulator
1589           early in the bootup.
1590
1591 config FPE_NWFPE_XP
1592         bool "Support extended precision"
1593         depends on FPE_NWFPE
1594         help
1595           Say Y to include 80-bit support in the kernel floating-point
1596           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1597           Note that gcc does not generate 80-bit operations by default,
1598           so in most cases this option only enlarges the size of the
1599           floating point emulator without any good reason.
1600
1601           You almost surely want to say N here.
1602
1603 config FPE_FASTFPE
1604         bool "FastFPE math emulation (EXPERIMENTAL)"
1605         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1606         ---help---
1607           Say Y here to include the FAST floating point emulator in the kernel.
1608           This is an experimental much faster emulator which now also has full
1609           precision for the mantissa.  It does not support any exceptions.
1610           It is very simple, and approximately 3-6 times faster than NWFPE.
1611
1612           It should be sufficient for most programs.  It may be not suitable
1613           for scientific calculations, but you have to check this for yourself.
1614           If you do not feel you need a faster FP emulation you should better
1615           choose NWFPE.
1616
1617 config VFP
1618         bool "VFP-format floating point maths"
1619         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1620         help
1621           Say Y to include VFP support code in the kernel. This is needed
1622           if your hardware includes a VFP unit.
1623
1624           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1625           release notes and additional status information.
1626
1627           Say N if your target does not have VFP hardware.
1628
1629 config VFPv3
1630         bool
1631         depends on VFP
1632         default y if CPU_V7
1633
1634 config NEON
1635         bool "Advanced SIMD (NEON) Extension support"
1636         depends on VFPv3 && CPU_V7
1637         help
1638           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1639           Extension.
1640
1641 endmenu
1642
1643 menu "Userspace binary formats"
1644
1645 source "fs/Kconfig.binfmt"
1646
1647 config ARTHUR
1648         tristate "RISC OS personality"
1649         depends on !AEABI
1650         help
1651           Say Y here to include the kernel code necessary if you want to run
1652           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1653           experimental; if this sounds frightening, say N and sleep in peace.
1654           You can also say M here to compile this support as a module (which
1655           will be called arthur).
1656
1657 endmenu
1658
1659 menu "Power management options"
1660
1661 source "kernel/power/Kconfig"
1662
1663 config ARCH_SUSPEND_POSSIBLE
1664         def_bool y
1665
1666 endmenu
1667
1668 source "net/Kconfig"
1669
1670 source "drivers/Kconfig"
1671
1672 source "fs/Kconfig"
1673
1674 source "arch/arm/Kconfig.debug"
1675
1676 source "security/Kconfig"
1677
1678 source "crypto/Kconfig"
1679
1680 source "lib/Kconfig"