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 ICST525
 244         help
 245           Support for ARM's Integrator platform.
 246
 247 config ARCH_REALVIEW
 248         bool "ARM Ltd. RealView family"
 249         select ARM_AMBA
 250         select HAVE_CLK
 251         select COMMON_CLKDEV
 252         select ICST307
 253         select GENERIC_TIME
 254         select GENERIC_CLOCKEVENTS
 255         select ARCH_WANT_OPTIONAL_GPIOLIB
 256         select GPIO_PL061 if GPIOLIB
 257         help
 258           This enables support for ARM Ltd RealView boards.
 259
 260 config ARCH_VERSATILE
 261         bool "ARM Ltd. Versatile family"
 262         select ARM_AMBA
 263         select ARM_VIC
 264         select HAVE_CLK
 265         select COMMON_CLKDEV
 266         select ICST307
 267         select GENERIC_TIME
 268         select GENERIC_CLOCKEVENTS
 269         select ARCH_WANT_OPTIONAL_GPIOLIB
 270         help
 271           This enables support for ARM Ltd Versatile board.
 272
 273 config ARCH_AT91
 274         bool "Atmel AT91"
 275         select GENERIC_GPIO
 276         select ARCH_REQUIRE_GPIOLIB
 277         select HAVE_CLK
 278         help
 279           This enables support for systems based on the Atmel AT91RM9200,
 280           AT91SAM9 and AT91CAP9 processors.
 281
 282 config ARCH_BCMRING
 283         bool "Broadcom BCMRING"
 284         depends on MMU
 285         select CPU_V6
 286         select ARM_AMBA
 287         select COMMON_CLKDEV
 288         select GENERIC_TIME
 289         select GENERIC_CLOCKEVENTS
 290         select ARCH_WANT_OPTIONAL_GPIOLIB
 291         help
 292           Support for Broadcom's BCMRing platform.
 293
 294 config ARCH_CLPS711X
 295         bool "Cirrus Logic CLPS711x/EP721x-based"
 296         select CPU_ARM720T
 297         help
 298           Support for Cirrus Logic 711x/721x based boards.
 299
 300 config ARCH_CNS3XXX
 301         bool "Cavium Networks CNS3XXX family"
 302         select CPU_V6
 303         select GENERIC_TIME
 304         select GENERIC_CLOCKEVENTS
 305         select ARM_GIC
 306         help
 307           Support for Cavium Networks CNS3XXX platform.
 308
 309 config ARCH_GEMINI
 310         bool "Cortina Systems Gemini"
 311         select CPU_FA526
 312         select GENERIC_GPIO
 313         select ARCH_REQUIRE_GPIOLIB
 314         help
 315           Support for the Cortina Systems Gemini family SoCs
 316
 317 config ARCH_EBSA110
 318         bool "EBSA-110"
 319         select CPU_SA110
 320         select ISA
 321         select NO_IOPORT
 322         help
 323           This is an evaluation board for the StrongARM processor available
 324           from Digital. It has limited hardware on-board, including an
 325           Ethernet interface, two PCMCIA sockets, two serial ports and a
 326           parallel port.
 327
 328 config ARCH_EP93XX
 329         bool "EP93xx-based"
 330         select CPU_ARM920T
 331         select ARM_AMBA
 332         select ARM_VIC
 333         select GENERIC_GPIO
 334         select HAVE_CLK
 335         select COMMON_CLKDEV
 336         select ARCH_REQUIRE_GPIOLIB
 337         select ARCH_HAS_HOLES_MEMORYMODEL
 338         help
 339           This enables support for the Cirrus EP93xx series of CPUs.
 340
 341 config ARCH_FOOTBRIDGE
 342         bool "FootBridge"
 343         select CPU_SA110
 344         select FOOTBRIDGE
 345         help
 346           Support for systems based on the DC21285 companion chip
 347           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 348
 349 config ARCH_MXC
 350         bool "Freescale MXC/iMX-based"
 351         select GENERIC_TIME
 352         select GENERIC_CLOCKEVENTS
 353         select ARCH_REQUIRE_GPIOLIB
 354         select HAVE_CLK
 355         select COMMON_CLKDEV
 356         help
 357           Support for Freescale MXC/iMX-based family of processors
 358
 359 config ARCH_STMP3XXX
 360         bool "Freescale STMP3xxx"
 361         select CPU_ARM926T
 362         select HAVE_CLK
 363         select COMMON_CLKDEV
 364         select ARCH_REQUIRE_GPIOLIB
 365         select GENERIC_TIME
 366         select GENERIC_CLOCKEVENTS
 367         select GENERIC_GPIO
 368         select USB_ARCH_HAS_EHCI
 369         help
 370           Support for systems based on the Freescale 3xxx CPUs.
 371
 372 config ARCH_NETX
 373         bool "Hilscher NetX based"
 374         select CPU_ARM926T
 375         select ARM_VIC
 376         select GENERIC_CLOCKEVENTS
 377         select GENERIC_TIME
 378         help
 379           This enables support for systems based on the Hilscher NetX Soc
 380
 381 config ARCH_H720X
 382         bool "Hynix HMS720x-based"
 383         select CPU_ARM720T
 384         select ISA_DMA_API
 385         help
 386           This enables support for systems based on the Hynix HMS720x
 387
 388 config ARCH_IOP13XX
 389         bool "IOP13xx-based"
 390         depends on MMU
 391         select CPU_XSC3
 392         select PLAT_IOP
 393         select PCI
 394         select ARCH_SUPPORTS_MSI
 395         select VMSPLIT_1G
 396         help
 397           Support for Intel's IOP13XX (XScale) family of processors.
 398
 399 config ARCH_IOP32X
 400         bool "IOP32x-based"
 401         depends on MMU
 402         select CPU_XSCALE
 403         select PLAT_IOP
 404         select PCI
 405         select GENERIC_GPIO
 406         select ARCH_REQUIRE_GPIOLIB
 407         help
 408           Support for Intel's 80219 and IOP32X (XScale) family of
 409           processors.
 410
 411 config ARCH_IOP33X
 412         bool "IOP33x-based"
 413         depends on MMU
 414         select CPU_XSCALE
 415         select PLAT_IOP
 416         select PCI
 417         select GENERIC_GPIO
 418         select ARCH_REQUIRE_GPIOLIB
 419         help
 420           Support for Intel's IOP33X (XScale) family of processors.
 421
 422 config ARCH_IXP23XX
 423         bool "IXP23XX-based"
 424         depends on MMU
 425         select CPU_XSC3
 426         select PCI
 427         help
 428           Support for Intel's IXP23xx (XScale) family of processors.
 429
 430 config ARCH_IXP2000
 431         bool "IXP2400/2800-based"
 432         depends on MMU
 433         select CPU_XSCALE
 434         select PCI
 435         help
 436           Support for Intel's IXP2400/2800 (XScale) family of processors.
 437
 438 config ARCH_IXP4XX
 439         bool "IXP4xx-based"
 440         depends on MMU
 441         select CPU_XSCALE
 442         select GENERIC_GPIO
 443         select GENERIC_TIME
 444         select GENERIC_CLOCKEVENTS
 445         select DMABOUNCE if PCI
 446         help
 447           Support for Intel's IXP4XX (XScale) family of processors.
 448
 449 config ARCH_L7200
 450         bool "LinkUp-L7200"
 451         select CPU_ARM720T
 452         select FIQ
 453         help
 454           Say Y here if you intend to run this kernel on a LinkUp Systems
 455           L7200 Software Development Board which uses an ARM720T processor.
 456           Information on this board can be obtained at:
 457
 458           <http://www.linkupsys.com/>
 459
 460           If you have any questions or comments about the Linux kernel port
 461           to this board, send e-mail to <sjhill@cotw.com>.
 462
 463 config ARCH_DOVE
 464         bool "Marvell Dove"
 465         select PCI
 466         select GENERIC_GPIO
 467         select ARCH_REQUIRE_GPIOLIB
 468         select GENERIC_TIME
 469         select GENERIC_CLOCKEVENTS
 470         select PLAT_ORION
 471         help
 472           Support for the Marvell Dove SoC 88AP510
 473
 474 config ARCH_KIRKWOOD
 475         bool "Marvell Kirkwood"
 476         select CPU_FEROCEON
 477         select PCI
 478         select GENERIC_GPIO
 479         select ARCH_REQUIRE_GPIOLIB
 480         select GENERIC_TIME
 481         select GENERIC_CLOCKEVENTS
 482         select PLAT_ORION
 483         help
 484           Support for the following Marvell Kirkwood series SoCs:
 485           88F6180, 88F6192 and 88F6281.
 486
 487 config ARCH_LOKI
 488         bool "Marvell Loki (88RC8480)"
 489         select CPU_FEROCEON
 490         select GENERIC_TIME
 491         select GENERIC_CLOCKEVENTS
 492         select PLAT_ORION
 493         help
 494           Support for the Marvell Loki (88RC8480) SoC.
 495
 496 config ARCH_MV78XX0
 497         bool "Marvell MV78xx0"
 498         select CPU_FEROCEON
 499         select PCI
 500         select GENERIC_GPIO
 501         select ARCH_REQUIRE_GPIOLIB
 502         select GENERIC_TIME
 503         select GENERIC_CLOCKEVENTS
 504         select PLAT_ORION
 505         help
 506           Support for the following Marvell MV78xx0 series SoCs:
 507           MV781x0, MV782x0.
 508
 509 config ARCH_ORION5X
 510         bool "Marvell Orion"
 511         depends on MMU
 512         select CPU_FEROCEON
 513         select PCI
 514         select GENERIC_GPIO
 515         select ARCH_REQUIRE_GPIOLIB
 516         select GENERIC_TIME
 517         select GENERIC_CLOCKEVENTS
 518         select PLAT_ORION
 519         help
 520           Support for the following Marvell Orion 5x series SoCs:
 521           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 522           Orion-2 (5281), Orion-1-90 (6183).
 523
 524 config ARCH_MMP
 525         bool "Marvell PXA168/910/MMP2"
 526         depends on MMU
 527         select GENERIC_GPIO
 528         select ARCH_REQUIRE_GPIOLIB
 529         select HAVE_CLK
 530         select COMMON_CLKDEV
 531         select GENERIC_TIME
 532         select GENERIC_CLOCKEVENTS
 533         select TICK_ONESHOT
 534         select PLAT_PXA
 535         help
 536           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 537
 538 config ARCH_KS8695
 539         bool "Micrel/Kendin KS8695"
 540         select CPU_ARM922T
 541         select GENERIC_GPIO
 542         select ARCH_REQUIRE_GPIOLIB
 543         help
 544           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 545           System-on-Chip devices.
 546
 547 config ARCH_NS9XXX
 548         bool "NetSilicon NS9xxx"
 549         select CPU_ARM926T
 550         select GENERIC_GPIO
 551         select GENERIC_TIME
 552         select GENERIC_CLOCKEVENTS
 553         select HAVE_CLK
 554         help
 555           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 556           System.
 557
 558           <http://www.digi.com/products/microprocessors/index.jsp>
 559
 560 config ARCH_W90X900
 561         bool "Nuvoton W90X900 CPU"
 562         select CPU_ARM926T
 563         select ARCH_REQUIRE_GPIOLIB
 564         select GENERIC_GPIO
 565         select HAVE_CLK
 566         select COMMON_CLKDEV
 567         select GENERIC_TIME
 568         select GENERIC_CLOCKEVENTS
 569         help
 570           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 571           At present, the w90x900 has been renamed nuc900, regarding
 572           the ARM series product line, you can login the following
 573           link address to know more.
 574
 575           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 576                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 577
 578 config ARCH_NUC93X
 579         bool "Nuvoton NUC93X CPU"
 580         select CPU_ARM926T
 581         select HAVE_CLK
 582         select COMMON_CLKDEV
 583         help
 584           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 585           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 586
 587 config ARCH_PNX4008
 588         bool "Philips Nexperia PNX4008 Mobile"
 589         select CPU_ARM926T
 590         select HAVE_CLK
 591         select COMMON_CLKDEV
 592         help
 593           This enables support for Philips PNX4008 mobile platform.
 594
 595 config ARCH_PXA
 596         bool "PXA2xx/PXA3xx-based"
 597         depends on MMU
 598         select ARCH_MTD_XIP
 599         select ARCH_HAS_CPUFREQ
 600         select GENERIC_GPIO
 601         select HAVE_CLK
 602         select COMMON_CLKDEV
 603         select ARCH_REQUIRE_GPIOLIB
 604         select GENERIC_TIME
 605         select GENERIC_CLOCKEVENTS
 606         select TICK_ONESHOT
 607         select PLAT_PXA
 608         help
 609           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 610
 611 config ARCH_MSM
 612         bool "Qualcomm MSM"
 613         select HAVE_CLK
 614         select GENERIC_TIME
 615         select GENERIC_CLOCKEVENTS
 616         help
 617           Support for Qualcomm MSM/QSD based systems.  This runs on the
 618           apps processor of the MSM/QSD and depends on a shared memory
 619           interface to the modem processor which runs the baseband
 620           stack and controls some vital subsystems
 621           (clock and power control, etc).
 622
 623 config ARCH_SHMOBILE
 624         bool "Renesas SH-Mobile"
 625         help
 626           Support for Renesas's SH-Mobile ARM platforms
 627
 628 config ARCH_RPC
 629         bool "RiscPC"
 630         select ARCH_ACORN
 631         select FIQ
 632         select TIMER_ACORN
 633         select ARCH_MAY_HAVE_PC_FDC
 634         select HAVE_PATA_PLATFORM
 635         select ISA_DMA_API
 636         select NO_IOPORT
 637         select ARCH_SPARSEMEM_ENABLE
 638         help
 639           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 640           CD-ROM interface, serial and parallel port, and the floppy drive.
 641
 642 config ARCH_SA1100
 643         bool "SA1100-based"
 644         select CPU_SA1100
 645         select ISA
 646         select ARCH_SPARSEMEM_ENABLE
 647         select ARCH_MTD_XIP
 648         select ARCH_HAS_CPUFREQ
 649         select CPU_FREQ
 650         select GENERIC_GPIO
 651         select GENERIC_TIME
 652         select GENERIC_CLOCKEVENTS
 653         select HAVE_CLK
 654         select TICK_ONESHOT
 655         select ARCH_REQUIRE_GPIOLIB
 656         help
 657           Support for StrongARM 11x0 based boards.
 658
 659 config ARCH_S3C2410
 660         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 661         select GENERIC_GPIO
 662         select ARCH_HAS_CPUFREQ
 663         select HAVE_CLK
 664         help
 665           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 666           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 667           the Samsung SMDK2410 development board (and derivatives).
 668
 669           Note, the S3C2416 and the S3C2450 are so close that they even share
 670           the same SoC ID code. This means that there is no seperate machine
 671           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 672
 673 config ARCH_S3C64XX
 674         bool "Samsung S3C64XX"
 675         select PLAT_SAMSUNG
 676         select CPU_V6
 677         select GENERIC_GPIO
 678         select ARM_VIC
 679         select HAVE_CLK
 680         select NO_IOPORT
 681         select ARCH_HAS_CPUFREQ
 682         select ARCH_REQUIRE_GPIOLIB
 683         select SAMSUNG_CLKSRC
 684         select SAMSUNG_IRQ_VIC_TIMER
 685         select SAMSUNG_IRQ_UART
 686         select S3C_GPIO_TRACK
 687         select S3C_GPIO_PULL_UPDOWN
 688         select S3C_GPIO_CFG_S3C24XX
 689         select S3C_GPIO_CFG_S3C64XX
 690         select S3C_DEV_NAND
 691         select USB_ARCH_HAS_OHCI
 692         select SAMSUNG_GPIOLIB_4BIT
 693         help
 694           Samsung S3C64XX series based systems
 695
 696 config ARCH_S5P6440
 697         bool "Samsung S5P6440"
 698         select CPU_V6
 699         select GENERIC_GPIO
 700         select HAVE_CLK
 701         help
 702           Samsung S5P6440 CPU based systems
 703
 704 config ARCH_S5P6442
 705         bool "Samsung S5P6442"
 706         select CPU_V6
 707         select GENERIC_GPIO
 708         select HAVE_CLK
 709         help
 710           Samsung S5P6442 CPU based systems
 711
 712 config ARCH_S5PC1XX
 713         bool "Samsung S5PC1XX"
 714         select GENERIC_GPIO
 715         select HAVE_CLK
 716         select CPU_V7
 717         select ARM_L1_CACHE_SHIFT_6
 718         help
 719           Samsung S5PC1XX series based systems
 720
 721 config ARCH_S5PV210
 722         bool "Samsung S5PV210/S5PC110"
 723         select CPU_V7
 724         select GENERIC_GPIO
 725         select HAVE_CLK
 726         select ARM_L1_CACHE_SHIFT_6
 727         help
 728           Samsung S5PV210/S5PC110 series based systems
 729
 730 config ARCH_SHARK
 731         bool "Shark"
 732         select CPU_SA110
 733         select ISA
 734         select ISA_DMA
 735         select ZONE_DMA
 736         select PCI
 737         help
 738           Support for the StrongARM based Digital DNARD machine, also known
 739           as "Shark" (<http://www.shark-linux.de/shark.html>).
 740
 741 config ARCH_LH7A40X
 742         bool "Sharp LH7A40X"
 743         select CPU_ARM922T
 744         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 745         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 746         help
 747           Say Y here for systems based on one of the Sharp LH7A40X
 748           System on a Chip processors.  These CPUs include an ARM922T
 749           core with a wide array of integrated devices for
 750           hand-held and low-power applications.
 751
 752 config ARCH_U300
 753         bool "ST-Ericsson U300 Series"
 754         depends on MMU
 755         select CPU_ARM926T
 756         select HAVE_TCM
 757         select ARM_AMBA
 758         select ARM_VIC
 759         select GENERIC_TIME
 760         select GENERIC_CLOCKEVENTS
 761         select HAVE_CLK
 762         select COMMON_CLKDEV
 763         select GENERIC_GPIO
 764         help
 765           Support for ST-Ericsson U300 series mobile platforms.
 766
 767 config ARCH_U8500
 768         bool "ST-Ericsson U8500 Series"
 769         select CPU_V7
 770         select ARM_AMBA
 771         select GENERIC_TIME
 772         select GENERIC_CLOCKEVENTS
 773         select COMMON_CLKDEV
 774         help
 775           Support for ST-Ericsson's Ux500 architecture
 776
 777 config ARCH_NOMADIK
 778         bool "STMicroelectronics Nomadik"
 779         select ARM_AMBA
 780         select ARM_VIC
 781         select CPU_ARM926T
 782         select HAVE_CLK
 783         select COMMON_CLKDEV
 784         select GENERIC_TIME
 785         select GENERIC_CLOCKEVENTS
 786         select GENERIC_GPIO
 787         select ARCH_REQUIRE_GPIOLIB
 788         help
 789           Support for the Nomadik platform by ST-Ericsson
 790
 791 config ARCH_DAVINCI
 792         bool "TI DaVinci"
 793         select CPU_ARM926T
 794         select GENERIC_TIME
 795         select GENERIC_CLOCKEVENTS
 796         select GENERIC_GPIO
 797         select ARCH_REQUIRE_GPIOLIB
 798         select HAVE_CLK
 799         select ZONE_DMA
 800         select HAVE_IDE
 801         select COMMON_CLKDEV
 802         select GENERIC_ALLOCATOR
 803         select ARCH_HAS_HOLES_MEMORYMODEL
 804         help
 805           Support for TI's DaVinci platform.
 806
 807 config ARCH_OMAP
 808         bool "TI OMAP"
 809         select GENERIC_GPIO
 810         select HAVE_CLK
 811         select ARCH_REQUIRE_GPIOLIB
 812         select ARCH_HAS_CPUFREQ
 813         select GENERIC_TIME
 814         select GENERIC_CLOCKEVENTS
 815         select ARCH_HAS_HOLES_MEMORYMODEL
 816         help
 817           Support for TI's OMAP platform (OMAP1 and OMAP2).
 818
 819 endchoice
 820
 821 #
 822 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 823 # Kconfigs may be included either alphabetically (according to the
 824 # plat- suffix) or along side the corresponding mach-* source.
 825 #
 826 source "arch/arm/mach-aaec2000/Kconfig"
 827
 828 source "arch/arm/mach-at91/Kconfig"
 829
 830 source "arch/arm/mach-bcmring/Kconfig"
 831
 832 source "arch/arm/mach-clps711x/Kconfig"
 833
 834 source "arch/arm/mach-cns3xxx/Kconfig"
 835
 836 source "arch/arm/mach-davinci/Kconfig"
 837
 838 source "arch/arm/mach-dove/Kconfig"
 839
 840 source "arch/arm/mach-ep93xx/Kconfig"
 841
 842 source "arch/arm/mach-footbridge/Kconfig"
 843
 844 source "arch/arm/mach-gemini/Kconfig"
 845
 846 source "arch/arm/mach-h720x/Kconfig"
 847
 848 source "arch/arm/mach-integrator/Kconfig"
 849
 850 source "arch/arm/mach-iop32x/Kconfig"
 851
 852 source "arch/arm/mach-iop33x/Kconfig"
 853
 854 source "arch/arm/mach-iop13xx/Kconfig"
 855
 856 source "arch/arm/mach-ixp4xx/Kconfig"
 857
 858 source "arch/arm/mach-ixp2000/Kconfig"
 859
 860 source "arch/arm/mach-ixp23xx/Kconfig"
 861
 862 source "arch/arm/mach-kirkwood/Kconfig"
 863
 864 source "arch/arm/mach-ks8695/Kconfig"
 865
 866 source "arch/arm/mach-lh7a40x/Kconfig"
 867
 868 source "arch/arm/mach-loki/Kconfig"
 869
 870 source "arch/arm/mach-msm/Kconfig"
 871
 872 source "arch/arm/mach-mv78xx0/Kconfig"
 873
 874 source "arch/arm/plat-mxc/Kconfig"
 875
 876 source "arch/arm/mach-netx/Kconfig"
 877
 878 source "arch/arm/mach-nomadik/Kconfig"
 879 source "arch/arm/plat-nomadik/Kconfig"
 880
 881 source "arch/arm/mach-ns9xxx/Kconfig"
 882
 883 source "arch/arm/mach-nuc93x/Kconfig"
 884
 885 source "arch/arm/plat-omap/Kconfig"
 886
 887 source "arch/arm/mach-omap1/Kconfig"
 888
 889 source "arch/arm/mach-omap2/Kconfig"
 890
 891 source "arch/arm/mach-orion5x/Kconfig"
 892
 893 source "arch/arm/mach-pxa/Kconfig"
 894 source "arch/arm/plat-pxa/Kconfig"
 895
 896 source "arch/arm/mach-mmp/Kconfig"
 897
 898 source "arch/arm/mach-realview/Kconfig"
 899
 900 source "arch/arm/mach-sa1100/Kconfig"
 901
 902 source "arch/arm/plat-samsung/Kconfig"
 903 source "arch/arm/plat-s3c24xx/Kconfig"
 904 source "arch/arm/plat-s5p/Kconfig"
 905 source "arch/arm/plat-s5pc1xx/Kconfig"
 906
 907 if ARCH_S3C2410
 908 source "arch/arm/mach-s3c2400/Kconfig"
 909 source "arch/arm/mach-s3c2410/Kconfig"
 910 source "arch/arm/mach-s3c2412/Kconfig"
 911 source "arch/arm/mach-s3c2416/Kconfig"
 912 source "arch/arm/mach-s3c2440/Kconfig"
 913 source "arch/arm/mach-s3c2443/Kconfig"
 914 endif
 915
 916 if ARCH_S3C64XX
 917 source "arch/arm/mach-s3c64xx/Kconfig"
 918 endif
 919
 920 source "arch/arm/mach-s5p6440/Kconfig"
 921
 922 source "arch/arm/mach-s5p6442/Kconfig"
 923
 924 if ARCH_S5PC1XX
 925 source "arch/arm/mach-s5pc100/Kconfig"
 926 endif
 927
 928 source "arch/arm/mach-s5pv210/Kconfig"
 929
 930 source "arch/arm/mach-shmobile/Kconfig"
 931
 932 source "arch/arm/plat-stmp3xxx/Kconfig"
 933
 934 source "arch/arm/mach-u300/Kconfig"
 935
 936 source "arch/arm/mach-ux500/Kconfig"
 937
 938 source "arch/arm/mach-versatile/Kconfig"
 939
 940 source "arch/arm/mach-w90x900/Kconfig"
 941
 942 # Definitions to make life easier
 943 config ARCH_ACORN
 944         bool
 945
 946 config PLAT_IOP
 947         bool
 948         select GENERIC_CLOCKEVENTS
 949         select GENERIC_TIME
 950
 951 config PLAT_ORION
 952         bool
 953
 954 config PLAT_PXA
 955         bool
 956
 957 source arch/arm/mm/Kconfig
 958
 959 config IWMMXT
 960         bool "Enable iWMMXt support"
 961         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 962         default y if PXA27x || PXA3xx || ARCH_MMP
 963         help
 964           Enable support for iWMMXt context switching at run time if
 965           running on a CPU that supports it.
 966
 967 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 968 config XSCALE_PMU
 969         bool
 970         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 971         default y
 972
 973 config CPU_HAS_PMU
 974         depends on CPU_V6 || CPU_V7 || XSCALE_PMU
 975         default y
 976         bool
 977
 978 if !MMU
 979 source "arch/arm/Kconfig-nommu"
 980 endif
 981
 982 config ARM_ERRATA_411920
 983         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 984         depends on CPU_V6 && !SMP
 985         help
 986           Invalidation of the Instruction Cache operation can
 987           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 988           It does not affect the MPCore. This option enables the ARM Ltd.
 989           recommended workaround.
 990
 991 config ARM_ERRATA_430973
 992         bool "ARM errata: Stale prediction on replaced interworking branch"
 993         depends on CPU_V7
 994         help
 995           This option enables the workaround for the 430973 Cortex-A8
 996           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 997           interworking branch is replaced with another code sequence at the
 998           same virtual address, whether due to self-modifying code or virtual
 999           to physical address re-mapping, Cortex-A8 does not recover from the
1000           stale interworking branch prediction. This results in Cortex-A8
1001           executing the new code sequence in the incorrect ARM or Thumb state.
1002           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1003           and also flushes the branch target cache at every context switch.
1004           Note that setting specific bits in the ACTLR register may not be
1005           available in non-secure mode.
1006
1007 config ARM_ERRATA_458693
1008         bool "ARM errata: Processor deadlock when a false hazard is created"
1009         depends on CPU_V7
1010         help
1011           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1012           erratum. For very specific sequences of memory operations, it is
1013           possible for a hazard condition intended for a cache line to instead
1014           be incorrectly associated with a different cache line. This false
1015           hazard might then cause a processor deadlock. The workaround enables
1016           the L1 caching of the NEON accesses and disables the PLD instruction
1017           in the ACTLR register. Note that setting specific bits in the ACTLR
1018           register may not be available in non-secure mode.
1019
1020 config ARM_ERRATA_460075
1021         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1022         depends on CPU_V7
1023         help
1024           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1025           erratum. Any asynchronous access to the L2 cache may encounter a
1026           situation in which recent store transactions to the L2 cache are lost
1027           and overwritten with stale memory contents from external memory. The
1028           workaround disables the write-allocate mode for the L2 cache via the
1029           ACTLR register. Note that setting specific bits in the ACTLR register
1030           may not be available in non-secure mode.
1031
1032 config PL310_ERRATA_588369
1033         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1034         depends on CACHE_L2X0 && ARCH_OMAP4
1035         help
1036            The PL310 L2 cache controller implements three types of Clean &
1037            Invalidate maintenance operations: by Physical Address
1038            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1039            They are architecturally defined to behave as the execution of a
1040            clean operation followed immediately by an invalidate operation,
1041            both performing to the same memory location. This functionality
1042            is not correctly implemented in PL310 as clean lines are not
1043            invalidated as a result of these operations. Note that this errata
1044            uses Texas Instrument's secure monitor api.
1045 endmenu
1046
1047 source "arch/arm/common/Kconfig"
1048
1049 config FORCE_MAX_ZONEORDER
1050         int
1051         depends on SA1111
1052         default "9"
1053
1054 menu "Bus support"
1055
1056 config ARM_AMBA
1057         bool
1058
1059 config ISA
1060         bool
1061         help
1062           Find out whether you have ISA slots on your motherboard.  ISA is the
1063           name of a bus system, i.e. the way the CPU talks to the other stuff
1064           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1065           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1066           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1067
1068 # Select ISA DMA controller support
1069 config ISA_DMA
1070         bool
1071         select ISA_DMA_API
1072
1073 # Select ISA DMA interface
1074 config ISA_DMA_API
1075         bool
1076
1077 config PCI
1078         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1079         help
1080           Find out whether you have a PCI motherboard. PCI is the name of a
1081           bus system, i.e. the way the CPU talks to the other stuff inside
1082           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1083           VESA. If you have PCI, say Y, otherwise N.
1084
1085 config PCI_SYSCALL
1086         def_bool PCI
1087
1088 # Select the host bridge type
1089 config PCI_HOST_VIA82C505
1090         bool
1091         depends on PCI && ARCH_SHARK
1092         default y
1093
1094 config PCI_HOST_ITE8152
1095         bool
1096         depends on PCI && MACH_ARMCORE
1097         default y
1098         select DMABOUNCE
1099
1100 source "drivers/pci/Kconfig"
1101
1102 source "drivers/pcmcia/Kconfig"
1103
1104 endmenu
1105
1106 menu "Kernel Features"
1107
1108 source "kernel/time/Kconfig"
1109
1110 config SMP
1111         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1112         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1113                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1114         depends on GENERIC_CLOCKEVENTS
1115         select USE_GENERIC_SMP_HELPERS
1116         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1117         help
1118           This enables support for systems with more than one CPU. If you have
1119           a system with only one CPU, like most personal computers, say N. If
1120           you have a system with more than one CPU, say Y.
1121
1122           If you say N here, the kernel will run on single and multiprocessor
1123           machines, but will use only one CPU of a multiprocessor machine. If
1124           you say Y here, the kernel will run on many, but not all, single
1125           processor machines. On a single processor machine, the kernel will
1126           run faster if you say N here.
1127
1128           See also <file:Documentation/i386/IO-APIC.txt>,
1129           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1130           <http://www.linuxdoc.org/docs.html#howto>.
1131
1132           If you don't know what to do here, say N.
1133
1134 config HAVE_ARM_SCU
1135         bool
1136         depends on SMP
1137         help
1138           This option enables support for the ARM system coherency unit
1139
1140 config HAVE_ARM_TWD
1141         bool
1142         depends on SMP
1143         help
1144           This options enables support for the ARM timer and watchdog unit
1145
1146 choice
1147         prompt "Memory split"
1148         default VMSPLIT_3G
1149         help
1150           Select the desired split between kernel and user memory.
1151
1152           If you are not absolutely sure what you are doing, leave this
1153           option alone!
1154
1155         config VMSPLIT_3G
1156                 bool "3G/1G user/kernel split"
1157         config VMSPLIT_2G
1158                 bool "2G/2G user/kernel split"
1159         config VMSPLIT_1G
1160                 bool "1G/3G user/kernel split"
1161 endchoice
1162
1163 config PAGE_OFFSET
1164         hex
1165         default 0x40000000 if VMSPLIT_1G
1166         default 0x80000000 if VMSPLIT_2G
1167         default 0xC0000000
1168
1169 config NR_CPUS
1170         int "Maximum number of CPUs (2-32)"
1171         range 2 32
1172         depends on SMP
1173         default "4"
1174
1175 config HOTPLUG_CPU
1176         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1177         depends on SMP && HOTPLUG && EXPERIMENTAL
1178         help
1179           Say Y here to experiment with turning CPUs off and on.  CPUs
1180           can be controlled through /sys/devices/system/cpu.
1181
1182 config LOCAL_TIMERS
1183         bool "Use local timer interrupts"
1184         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1185                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1186         default y
1187         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1188         help
1189           Enable support for local timers on SMP platforms, rather then the
1190           legacy IPI broadcast method.  Local timers allows the system
1191           accounting to be spread across the timer interval, preventing a
1192           "thundering herd" at every timer tick.
1193
1194 source kernel/Kconfig.preempt
1195
1196 config HZ
1197         int
1198         default 128 if ARCH_L7200
1199         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1200         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1201         default AT91_TIMER_HZ if ARCH_AT91
1202         default 100
1203
1204 config THUMB2_KERNEL
1205         bool "Compile the kernel in Thumb-2 mode"
1206         depends on CPU_V7 && EXPERIMENTAL
1207         select AEABI
1208         select ARM_ASM_UNIFIED
1209         help
1210           By enabling this option, the kernel will be compiled in
1211           Thumb-2 mode. A compiler/assembler that understand the unified
1212           ARM-Thumb syntax is needed.
1213
1214           If unsure, say N.
1215
1216 config ARM_ASM_UNIFIED
1217         bool
1218
1219 config AEABI
1220         bool "Use the ARM EABI to compile the kernel"
1221         help
1222           This option allows for the kernel to be compiled using the latest
1223           ARM ABI (aka EABI).  This is only useful if you are using a user
1224           space environment that is also compiled with EABI.
1225
1226           Since there are major incompatibilities between the legacy ABI and
1227           EABI, especially with regard to structure member alignment, this
1228           option also changes the kernel syscall calling convention to
1229           disambiguate both ABIs and allow for backward compatibility support
1230           (selected with CONFIG_OABI_COMPAT).
1231
1232           To use this you need GCC version 4.0.0 or later.
1233
1234 config OABI_COMPAT
1235         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1236         depends on AEABI && EXPERIMENTAL
1237         default y
1238         help
1239           This option preserves the old syscall interface along with the
1240           new (ARM EABI) one. It also provides a compatibility layer to
1241           intercept syscalls that have structure arguments which layout
1242           in memory differs between the legacy ABI and the new ARM EABI
1243           (only for non "thumb" binaries). This option adds a tiny
1244           overhead to all syscalls and produces a slightly larger kernel.
1245           If you know you'll be using only pure EABI user space then you
1246           can say N here. If this option is not selected and you attempt
1247           to execute a legacy ABI binary then the result will be
1248           UNPREDICTABLE (in fact it can be predicted that it won't work
1249           at all). If in doubt say Y.
1250
1251 config ARCH_HAS_HOLES_MEMORYMODEL
1252         bool
1253
1254 # Discontigmem is deprecated
1255 config ARCH_DISCONTIGMEM_ENABLE
1256         bool
1257
1258 config ARCH_SPARSEMEM_ENABLE
1259         bool
1260
1261 config ARCH_SPARSEMEM_DEFAULT
1262         def_bool ARCH_SPARSEMEM_ENABLE
1263
1264 config ARCH_SELECT_MEMORY_MODEL
1265         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1266
1267 config NODES_SHIFT
1268         int
1269         default "4" if ARCH_LH7A40X
1270         default "2"
1271         depends on NEED_MULTIPLE_NODES
1272
1273 config HIGHMEM
1274         bool "High Memory Support (EXPERIMENTAL)"
1275         depends on MMU && EXPERIMENTAL
1276         help
1277           The address space of ARM processors is only 4 Gigabytes large
1278           and it has to accommodate user address space, kernel address
1279           space as well as some memory mapped IO. That means that, if you
1280           have a large amount of physical memory and/or IO, not all of the
1281           memory can be "permanently mapped" by the kernel. The physical
1282           memory that is not permanently mapped is called "high memory".
1283
1284           Depending on the selected kernel/user memory split, minimum
1285           vmalloc space and actual amount of RAM, you may not need this
1286           option which should result in a slightly faster kernel.
1287
1288           If unsure, say n.
1289
1290 config HIGHPTE
1291         bool "Allocate 2nd-level pagetables from highmem"
1292         depends on HIGHMEM
1293         depends on !OUTER_CACHE
1294
1295 config HW_PERF_EVENTS
1296         bool "Enable hardware performance counter support for perf events"
1297         depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
1298         default y
1299         help
1300           Enable hardware performance counter support for perf events. If
1301           disabled, perf events will use software events only.
1302
1303 source "mm/Kconfig"
1304
1305 config LEDS
1306         bool "Timer and CPU usage LEDs"
1307         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1308                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1309                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1310                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1311                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1312                    ARCH_AT91 || ARCH_DAVINCI || \
1313                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1314         help
1315           If you say Y here, the LEDs on your machine will be used
1316           to provide useful information about your current system status.
1317
1318           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1319           be able to select which LEDs are active using the options below. If
1320           you are compiling a kernel for the EBSA-110 or the LART however, the
1321           red LED will simply flash regularly to indicate that the system is
1322           still functional. It is safe to say Y here if you have a CATS
1323           system, but the driver will do nothing.
1324
1325 config LEDS_TIMER
1326         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1327                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1328                             || MACH_OMAP_PERSEUS2
1329         depends on LEDS
1330         depends on !GENERIC_CLOCKEVENTS
1331         default y if ARCH_EBSA110
1332         help
1333           If you say Y here, one of the system LEDs (the green one on the
1334           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1335           will flash regularly to indicate that the system is still
1336           operational. This is mainly useful to kernel hackers who are
1337           debugging unstable kernels.
1338
1339           The LART uses the same LED for both Timer LED and CPU usage LED
1340           functions. You may choose to use both, but the Timer LED function
1341           will overrule the CPU usage LED.
1342
1343 config LEDS_CPU
1344         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1345                         !ARCH_OMAP) \
1346                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1347                         || MACH_OMAP_PERSEUS2
1348         depends on LEDS
1349         help
1350           If you say Y here, the red LED will be used to give a good real
1351           time indication of CPU usage, by lighting whenever the idle task
1352           is not currently executing.
1353
1354           The LART uses the same LED for both Timer LED and CPU usage LED
1355           functions. You may choose to use both, but the Timer LED function
1356           will overrule the CPU usage LED.
1357
1358 config ALIGNMENT_TRAP
1359         bool
1360         depends on CPU_CP15_MMU
1361         default y if !ARCH_EBSA110
1362         select HAVE_PROC_CPU if PROC_FS
1363         help
1364           ARM processors cannot fetch/store information which is not
1365           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1366           address divisible by 4. On 32-bit ARM processors, these non-aligned
1367           fetch/store instructions will be emulated in software if you say
1368           here, which has a severe performance impact. This is necessary for
1369           correct operation of some network protocols. With an IP-only
1370           configuration it is safe to say N, otherwise say Y.
1371
1372 config UACCESS_WITH_MEMCPY
1373         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1374         depends on MMU && EXPERIMENTAL
1375         default y if CPU_FEROCEON
1376         help
1377           Implement faster copy_to_user and clear_user methods for CPU
1378           cores where a 8-word STM instruction give significantly higher
1379           memory write throughput than a sequence of individual 32bit stores.
1380
1381           A possible side effect is a slight increase in scheduling latency
1382           between threads sharing the same address space if they invoke
1383           such copy operations with large buffers.
1384
1385           However, if the CPU data cache is using a write-allocate mode,
1386           this option is unlikely to provide any performance gain.
1387
1388 endmenu
1389
1390 menu "Boot options"
1391
1392 # Compressed boot loader in ROM.  Yes, we really want to ask about
1393 # TEXT and BSS so we preserve their values in the config files.
1394 config ZBOOT_ROM_TEXT
1395         hex "Compressed ROM boot loader base address"
1396         default "0"
1397         help
1398           The physical address at which the ROM-able zImage is to be
1399           placed in the target.  Platforms which normally make use of
1400           ROM-able zImage formats normally set this to a suitable
1401           value in their defconfig file.
1402
1403           If ZBOOT_ROM is not enabled, this has no effect.
1404
1405 config ZBOOT_ROM_BSS
1406         hex "Compressed ROM boot loader BSS address"
1407         default "0"
1408         help
1409           The base address of an area of read/write memory in the target
1410           for the ROM-able zImage which must be available while the
1411           decompressor is running. It must be large enough to hold the
1412           entire decompressed kernel plus an additional 128 KiB.
1413           Platforms which normally make use of ROM-able zImage formats
1414           normally set this to a suitable value in their defconfig file.
1415
1416           If ZBOOT_ROM is not enabled, this has no effect.
1417
1418 config ZBOOT_ROM
1419         bool "Compressed boot loader in ROM/flash"
1420         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1421         help
1422           Say Y here if you intend to execute your compressed kernel image
1423           (zImage) directly from ROM or flash.  If unsure, say N.
1424
1425 config CMDLINE
1426         string "Default kernel command string"
1427         default ""
1428         help
1429           On some architectures (EBSA110 and CATS), there is currently no way
1430           for the boot loader to pass arguments to the kernel. For these
1431           architectures, you should supply some command-line options at build
1432           time by entering them here. As a minimum, you should specify the
1433           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1434
1435 config XIP_KERNEL
1436         bool "Kernel Execute-In-Place from ROM"
1437         depends on !ZBOOT_ROM
1438         help
1439           Execute-In-Place allows the kernel to run from non-volatile storage
1440           directly addressable by the CPU, such as NOR flash. This saves RAM
1441           space since the text section of the kernel is not loaded from flash
1442           to RAM.  Read-write sections, such as the data section and stack,
1443           are still copied to RAM.  The XIP kernel is not compressed since
1444           it has to run directly from flash, so it will take more space to
1445           store it.  The flash address used to link the kernel object files,
1446           and for storing it, is configuration dependent. Therefore, if you
1447           say Y here, you must know the proper physical address where to
1448           store the kernel image depending on your own flash memory usage.
1449
1450           Also note that the make target becomes "make xipImage" rather than
1451           "make zImage" or "make Image".  The final kernel binary to put in
1452           ROM memory will be arch/arm/boot/xipImage.
1453
1454           If unsure, say N.
1455
1456 config XIP_PHYS_ADDR
1457         hex "XIP Kernel Physical Location"
1458         depends on XIP_KERNEL
1459         default "0x00080000"
1460         help
1461           This is the physical address in your flash memory the kernel will
1462           be linked for and stored to.  This address is dependent on your
1463           own flash usage.
1464
1465 config KEXEC
1466         bool "Kexec system call (EXPERIMENTAL)"
1467         depends on EXPERIMENTAL
1468         help
1469           kexec is a system call that implements the ability to shutdown your
1470           current kernel, and to start another kernel.  It is like a reboot
1471           but it is independent of the system firmware.   And like a reboot
1472           you can start any kernel with it, not just Linux.
1473
1474           It is an ongoing process to be certain the hardware in a machine
1475           is properly shutdown, so do not be surprised if this code does not
1476           initially work for you.  It may help to enable device hotplugging
1477           support.
1478
1479 config ATAGS_PROC
1480         bool "Export atags in procfs"
1481         depends on KEXEC
1482         default y
1483         help
1484           Should the atags used to boot the kernel be exported in an "atags"
1485           file in procfs. Useful with kexec.
1486
1487 endmenu
1488
1489 menu "CPU Power Management"
1490
1491 if ARCH_HAS_CPUFREQ
1492
1493 source "drivers/cpufreq/Kconfig"
1494
1495 config CPU_FREQ_SA1100
1496         bool
1497
1498 config CPU_FREQ_SA1110
1499         bool
1500
1501 config CPU_FREQ_INTEGRATOR
1502         tristate "CPUfreq driver for ARM Integrator CPUs"
1503         depends on ARCH_INTEGRATOR && CPU_FREQ
1504         default y
1505         help
1506           This enables the CPUfreq driver for ARM Integrator CPUs.
1507
1508           For details, take a look at <file:Documentation/cpu-freq>.
1509
1510           If in doubt, say Y.
1511
1512 config CPU_FREQ_PXA
1513         bool
1514         depends on CPU_FREQ && ARCH_PXA && PXA25x
1515         default y
1516         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1517
1518 config CPU_FREQ_S3C64XX
1519         bool "CPUfreq support for Samsung S3C64XX CPUs"
1520         depends on CPU_FREQ && CPU_S3C6410
1521
1522 config CPU_FREQ_S3C
1523         bool
1524         help
1525           Internal configuration node for common cpufreq on Samsung SoC
1526
1527 config CPU_FREQ_S3C24XX
1528         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1529         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1530         select CPU_FREQ_S3C
1531         help
1532           This enables the CPUfreq driver for the Samsung S3C24XX family
1533           of CPUs.
1534
1535           For details, take a look at <file:Documentation/cpu-freq>.
1536
1537           If in doubt, say N.
1538
1539 config CPU_FREQ_S3C24XX_PLL
1540         bool "Support CPUfreq changing of PLL frequency"
1541         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1542         help
1543           Compile in support for changing the PLL frequency from the
1544           S3C24XX series CPUfreq driver. The PLL takes time to settle
1545           after a frequency change, so by default it is not enabled.
1546
1547           This also means that the PLL tables for the selected CPU(s) will
1548           be built which may increase the size of the kernel image.
1549
1550 config CPU_FREQ_S3C24XX_DEBUG
1551         bool "Debug CPUfreq Samsung driver core"
1552         depends on CPU_FREQ_S3C24XX
1553         help
1554           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1555
1556 config CPU_FREQ_S3C24XX_IODEBUG
1557         bool "Debug CPUfreq Samsung driver IO timing"
1558         depends on CPU_FREQ_S3C24XX
1559         help
1560           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1561
1562 config CPU_FREQ_S3C24XX_DEBUGFS
1563         bool "Export debugfs for CPUFreq"
1564         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1565         help
1566           Export status information via debugfs.
1567
1568 endif
1569
1570 source "drivers/cpuidle/Kconfig"
1571
1572 endmenu
1573
1574 menu "Floating point emulation"
1575
1576 comment "At least one emulation must be selected"
1577
1578 config FPE_NWFPE
1579         bool "NWFPE math emulation"
1580         depends on !AEABI || OABI_COMPAT
1581         ---help---
1582           Say Y to include the NWFPE floating point emulator in the kernel.
1583           This is necessary to run most binaries. Linux does not currently
1584           support floating point hardware so you need to say Y here even if
1585           your machine has an FPA or floating point co-processor podule.
1586
1587           You may say N here if you are going to load the Acorn FPEmulator
1588           early in the bootup.
1589
1590 config FPE_NWFPE_XP
1591         bool "Support extended precision"
1592         depends on FPE_NWFPE
1593         help
1594           Say Y to include 80-bit support in the kernel floating-point
1595           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1596           Note that gcc does not generate 80-bit operations by default,
1597           so in most cases this option only enlarges the size of the
1598           floating point emulator without any good reason.
1599
1600           You almost surely want to say N here.
1601
1602 config FPE_FASTFPE
1603         bool "FastFPE math emulation (EXPERIMENTAL)"
1604         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1605         ---help---
1606           Say Y here to include the FAST floating point emulator in the kernel.
1607           This is an experimental much faster emulator which now also has full
1608           precision for the mantissa.  It does not support any exceptions.
1609           It is very simple, and approximately 3-6 times faster than NWFPE.
1610
1611           It should be sufficient for most programs.  It may be not suitable
1612           for scientific calculations, but you have to check this for yourself.
1613           If you do not feel you need a faster FP emulation you should better
1614           choose NWFPE.
1615
1616 config VFP
1617         bool "VFP-format floating point maths"
1618         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1619         help
1620           Say Y to include VFP support code in the kernel. This is needed
1621           if your hardware includes a VFP unit.
1622
1623           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1624           release notes and additional status information.
1625
1626           Say N if your target does not have VFP hardware.
1627
1628 config VFPv3
1629         bool
1630         depends on VFP
1631         default y if CPU_V7
1632
1633 config NEON
1634         bool "Advanced SIMD (NEON) Extension support"
1635         depends on VFPv3 && CPU_V7
1636         help
1637           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1638           Extension.
1639
1640 endmenu
1641
1642 menu "Userspace binary formats"
1643
1644 source "fs/Kconfig.binfmt"
1645
1646 config ARTHUR
1647         tristate "RISC OS personality"
1648         depends on !AEABI
1649         help
1650           Say Y here to include the kernel code necessary if you want to run
1651           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1652           experimental; if this sounds frightening, say N and sleep in peace.
1653           You can also say M here to compile this support as a module (which
1654           will be called arthur).
1655
1656 endmenu
1657
1658 menu "Power management options"
1659
1660 source "kernel/power/Kconfig"
1661
1662 config ARCH_SUSPEND_POSSIBLE
1663         def_bool y
1664
1665 endmenu
1666
1667 source "net/Kconfig"
1668
1669 source "drivers/Kconfig"
1670
1671 source "fs/Kconfig"
1672
1673 source "arch/arm/Kconfig.debug"
1674
1675 source "security/Kconfig"
1676
1677 source "crypto/Kconfig"
1678
1679 source "lib/Kconfig"