arch/arm/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux Kernel Configuration"
   7
   8 config ARM
   9         bool
  10         default y
  11         select HAVE_AOUT
  12         select HAVE_IDE
  13         select HAVE_MEMBLOCK
  14         select RTC_LIB
  15         select SYS_SUPPORTS_APM_EMULATION
  16         select GENERIC_ATOMIC64 if (!CPU_32v6K)
  17         select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  18         select HAVE_ARCH_KGDB
  19         select HAVE_KPROBES if (!XIP_KERNEL)
  20         select HAVE_KRETPROBES if (HAVE_KPROBES)
  21         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  22         select HAVE_GENERIC_DMA_COHERENT
  23         select HAVE_KERNEL_GZIP
  24         select HAVE_KERNEL_LZO
  25         select HAVE_KERNEL_LZMA
  26         select HAVE_PERF_EVENTS
  27         select PERF_USE_VMALLOC
  28         select HAVE_REGS_AND_STACK_ACCESS_API
  29         help
  30           The ARM series is a line of low-power-consumption RISC chip designs
  31           licensed by ARM Ltd and targeted at embedded applications and
  32           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  33           manufactured, but legacy ARM-based PC hardware remains popular in
  34           Europe.  There is an ARM Linux project with a web page at
  35           <http://www.arm.linux.org.uk/>.
  36
  37 config HAVE_PWM
  38         bool
  39
  40 config SYS_SUPPORTS_APM_EMULATION
  41         bool
  42
  43 config GENERIC_GPIO
  44         bool
  45
  46 config ARCH_USES_GETTIMEOFFSET
  47         bool
  48         default n
  49
  50 config GENERIC_CLOCKEVENTS
  51         bool
  52
  53 config GENERIC_CLOCKEVENTS_BROADCAST
  54         bool
  55         depends on GENERIC_CLOCKEVENTS
  56         default y if SMP
  57
  58 config HAVE_TCM
  59         bool
  60         select GENERIC_ALLOCATOR
  61
  62 config HAVE_PROC_CPU
  63         bool
  64
  65 config NO_IOPORT
  66         bool
  67
  68 config EISA
  69         bool
  70         ---help---
  71           The Extended Industry Standard Architecture (EISA) bus was
  72           developed as an open alternative to the IBM MicroChannel bus.
  73
  74           The EISA bus provided some of the features of the IBM MicroChannel
  75           bus while maintaining backward compatibility with cards made for
  76           the older ISA bus.  The EISA bus saw limited use between 1988 and
  77           1995 when it was made obsolete by the PCI bus.
  78
  79           Say Y here if you are building a kernel for an EISA-based machine.
  80
  81           Otherwise, say N.
  82
  83 config SBUS
  84         bool
  85
  86 config MCA
  87         bool
  88         help
  89           MicroChannel Architecture is found in some IBM PS/2 machines and
  90           laptops.  It is a bus system similar to PCI or ISA. See
  91           <file:Documentation/mca.txt> (and especially the web page given
  92           there) before attempting to build an MCA bus kernel.
  93
  94 config GENERIC_HARDIRQS
  95         bool
  96         default y
  97
  98 config STACKTRACE_SUPPORT
  99         bool
 100         default y
 101
 102 config HAVE_LATENCYTOP_SUPPORT
 103         bool
 104         depends on !SMP
 105         default y
 106
 107 config LOCKDEP_SUPPORT
 108         bool
 109         default y
 110
 111 config TRACE_IRQFLAGS_SUPPORT
 112         bool
 113         default y
 114
 115 config HARDIRQS_SW_RESEND
 116         bool
 117         default y
 118
 119 config GENERIC_IRQ_PROBE
 120         bool
 121         default y
 122
 123 config GENERIC_LOCKBREAK
 124         bool
 125         default y
 126         depends on SMP && PREEMPT
 127
 128 config RWSEM_GENERIC_SPINLOCK
 129         bool
 130         default y
 131
 132 config RWSEM_XCHGADD_ALGORITHM
 133         bool
 134
 135 config ARCH_HAS_ILOG2_U32
 136         bool
 137
 138 config ARCH_HAS_ILOG2_U64
 139         bool
 140
 141 config ARCH_HAS_CPUFREQ
 142         bool
 143         help
 144           Internal node to signify that the ARCH has CPUFREQ support
 145           and that the relevant menu configurations are displayed for
 146           it.
 147
 148 config GENERIC_HWEIGHT
 149         bool
 150         default y
 151
 152 config GENERIC_CALIBRATE_DELAY
 153         bool
 154         default y
 155
 156 config ARCH_MAY_HAVE_PC_FDC
 157         bool
 158
 159 config ZONE_DMA
 160         bool
 161
 162 config NEED_DMA_MAP_STATE
 163        def_bool y
 164
 165 config GENERIC_ISA_DMA
 166         bool
 167
 168 config FIQ
 169         bool
 170
 171 config ARCH_MTD_XIP
 172         bool
 173
 174 config GENERIC_HARDIRQS_NO__DO_IRQ
 175         def_bool y
 176
 177 config ARM_L1_CACHE_SHIFT_6
 178         bool
 179         help
 180           Setting ARM L1 cache line size to 64 Bytes.
 181
 182 config VECTORS_BASE
 183         hex
 184         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 185         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 186         default 0x00000000
 187         help
 188           The base address of exception vectors.
 189
 190 source "init/Kconfig"
 191
 192 source "kernel/Kconfig.freezer"
 193
 194 menu "System Type"
 195
 196 config MMU
 197         bool "MMU-based Paged Memory Management Support"
 198         default y
 199         help
 200           Select if you want MMU-based virtualised addressing space
 201           support by paged memory management. If unsure, say 'Y'.
 202
 203 #
 204 # The "ARM system type" choice list is ordered alphabetically by option
 205 # text.  Please add new entries in the option alphabetic order.
 206 #
 207 choice
 208         prompt "ARM system type"
 209         default ARCH_VERSATILE
 210
 211 config ARCH_AAEC2000
 212         bool "Agilent AAEC-2000 based"
 213         select CPU_ARM920T
 214         select ARM_AMBA
 215         select HAVE_CLK
 216         select ARCH_USES_GETTIMEOFFSET
 217         help
 218           This enables support for systems based on the Agilent AAEC-2000
 219
 220 config ARCH_INTEGRATOR
 221         bool "ARM Ltd. Integrator family"
 222         select ARM_AMBA
 223         select ARCH_HAS_CPUFREQ
 224         select COMMON_CLKDEV
 225         select ICST
 226         select GENERIC_CLOCKEVENTS
 227         select PLAT_VERSATILE
 228         help
 229           Support for ARM's Integrator platform.
 230
 231 config ARCH_REALVIEW
 232         bool "ARM Ltd. RealView family"
 233         select ARM_AMBA
 234         select COMMON_CLKDEV
 235         select ICST
 236         select GENERIC_CLOCKEVENTS
 237         select ARCH_WANT_OPTIONAL_GPIOLIB
 238         select PLAT_VERSATILE
 239         select ARM_TIMER_SP804
 240         select GPIO_PL061 if GPIOLIB
 241         help
 242           This enables support for ARM Ltd RealView boards.
 243
 244 config ARCH_VERSATILE
 245         bool "ARM Ltd. Versatile family"
 246         select ARM_AMBA
 247         select ARM_VIC
 248         select COMMON_CLKDEV
 249         select ICST
 250         select GENERIC_CLOCKEVENTS
 251         select ARCH_WANT_OPTIONAL_GPIOLIB
 252         select PLAT_VERSATILE
 253         select ARM_TIMER_SP804
 254         help
 255           This enables support for ARM Ltd Versatile board.
 256
 257 config ARCH_VEXPRESS
 258         bool "ARM Ltd. Versatile Express family"
 259         select ARCH_WANT_OPTIONAL_GPIOLIB
 260         select ARM_AMBA
 261         select ARM_TIMER_SP804
 262         select COMMON_CLKDEV
 263         select GENERIC_CLOCKEVENTS
 264         select HAVE_CLK
 265         select ICST
 266         select PLAT_VERSATILE
 267         help
 268           This enables support for the ARM Ltd Versatile Express boards.
 269
 270 config ARCH_AT91
 271         bool "Atmel AT91"
 272         select ARCH_REQUIRE_GPIOLIB
 273         select HAVE_CLK
 274         select ARCH_USES_GETTIMEOFFSET
 275         help
 276           This enables support for systems based on the Atmel AT91RM9200,
 277           AT91SAM9 and AT91CAP9 processors.
 278
 279 config ARCH_BCMRING
 280         bool "Broadcom BCMRING"
 281         depends on MMU
 282         select CPU_V6
 283         select ARM_AMBA
 284         select COMMON_CLKDEV
 285         select GENERIC_CLOCKEVENTS
 286         select ARCH_WANT_OPTIONAL_GPIOLIB
 287         help
 288           Support for Broadcom's BCMRing platform.
 289
 290 config ARCH_CLPS711X
 291         bool "Cirrus Logic CLPS711x/EP721x-based"
 292         select CPU_ARM720T
 293         select ARCH_USES_GETTIMEOFFSET
 294         help
 295           Support for Cirrus Logic 711x/721x based boards.
 296
 297 config ARCH_CNS3XXX
 298         bool "Cavium Networks CNS3XXX family"
 299         select CPU_V6
 300         select GENERIC_CLOCKEVENTS
 301         select ARM_GIC
 302         select PCI_DOMAINS if PCI
 303         help
 304           Support for Cavium Networks CNS3XXX platform.
 305
 306 config ARCH_GEMINI
 307         bool "Cortina Systems Gemini"
 308         select CPU_FA526
 309         select ARCH_REQUIRE_GPIOLIB
 310         select ARCH_USES_GETTIMEOFFSET
 311         help
 312           Support for the Cortina Systems Gemini family SoCs
 313
 314 config ARCH_EBSA110
 315         bool "EBSA-110"
 316         select CPU_SA110
 317         select ISA
 318         select NO_IOPORT
 319         select ARCH_USES_GETTIMEOFFSET
 320         help
 321           This is an evaluation board for the StrongARM processor available
 322           from Digital. It has limited hardware on-board, including an
 323           Ethernet interface, two PCMCIA sockets, two serial ports and a
 324           parallel port.
 325
 326 config ARCH_EP93XX
 327         bool "EP93xx-based"
 328         select CPU_ARM920T
 329         select ARM_AMBA
 330         select ARM_VIC
 331         select COMMON_CLKDEV
 332         select ARCH_REQUIRE_GPIOLIB
 333         select ARCH_HAS_HOLES_MEMORYMODEL
 334         select ARCH_USES_GETTIMEOFFSET
 335         help
 336           This enables support for the Cirrus EP93xx series of CPUs.
 337
 338 config ARCH_FOOTBRIDGE
 339         bool "FootBridge"
 340         select CPU_SA110
 341         select FOOTBRIDGE
 342         select ARCH_USES_GETTIMEOFFSET
 343         help
 344           Support for systems based on the DC21285 companion chip
 345           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 346
 347 config ARCH_MXC
 348         bool "Freescale MXC/iMX-based"
 349         select GENERIC_CLOCKEVENTS
 350         select ARCH_REQUIRE_GPIOLIB
 351         select COMMON_CLKDEV
 352         help
 353           Support for Freescale MXC/iMX-based family of processors
 354
 355 config ARCH_STMP3XXX
 356         bool "Freescale STMP3xxx"
 357         select CPU_ARM926T
 358         select COMMON_CLKDEV
 359         select ARCH_REQUIRE_GPIOLIB
 360         select GENERIC_CLOCKEVENTS
 361         select USB_ARCH_HAS_EHCI
 362         help
 363           Support for systems based on the Freescale 3xxx CPUs.
 364
 365 config ARCH_NETX
 366         bool "Hilscher NetX based"
 367         select CPU_ARM926T
 368         select ARM_VIC
 369         select GENERIC_CLOCKEVENTS
 370         help
 371           This enables support for systems based on the Hilscher NetX Soc
 372
 373 config ARCH_H720X
 374         bool "Hynix HMS720x-based"
 375         select CPU_ARM720T
 376         select ISA_DMA_API
 377         select ARCH_USES_GETTIMEOFFSET
 378         help
 379           This enables support for systems based on the Hynix HMS720x
 380
 381 config ARCH_IOP13XX
 382         bool "IOP13xx-based"
 383         depends on MMU
 384         select CPU_XSC3
 385         select PLAT_IOP
 386         select PCI
 387         select ARCH_SUPPORTS_MSI
 388         select VMSPLIT_1G
 389         help
 390           Support for Intel's IOP13XX (XScale) family of processors.
 391
 392 config ARCH_IOP32X
 393         bool "IOP32x-based"
 394         depends on MMU
 395         select CPU_XSCALE
 396         select PLAT_IOP
 397         select PCI
 398         select ARCH_REQUIRE_GPIOLIB
 399         help
 400           Support for Intel's 80219 and IOP32X (XScale) family of
 401           processors.
 402
 403 config ARCH_IOP33X
 404         bool "IOP33x-based"
 405         depends on MMU
 406         select CPU_XSCALE
 407         select PLAT_IOP
 408         select PCI
 409         select ARCH_REQUIRE_GPIOLIB
 410         help
 411           Support for Intel's IOP33X (XScale) family of processors.
 412
 413 config ARCH_IXP23XX
 414         bool "IXP23XX-based"
 415         depends on MMU
 416         select CPU_XSC3
 417         select PCI
 418         select ARCH_USES_GETTIMEOFFSET
 419         help
 420           Support for Intel's IXP23xx (XScale) family of processors.
 421
 422 config ARCH_IXP2000
 423         bool "IXP2400/2800-based"
 424         depends on MMU
 425         select CPU_XSCALE
 426         select PCI
 427         select ARCH_USES_GETTIMEOFFSET
 428         help
 429           Support for Intel's IXP2400/2800 (XScale) family of processors.
 430
 431 config ARCH_IXP4XX
 432         bool "IXP4xx-based"
 433         depends on MMU
 434         select CPU_XSCALE
 435         select GENERIC_GPIO
 436         select GENERIC_CLOCKEVENTS
 437         select DMABOUNCE if PCI
 438         help
 439           Support for Intel's IXP4XX (XScale) family of processors.
 440
 441 config ARCH_DOVE
 442         bool "Marvell Dove"
 443         select PCI
 444         select ARCH_REQUIRE_GPIOLIB
 445         select GENERIC_CLOCKEVENTS
 446         select PLAT_ORION
 447         help
 448           Support for the Marvell Dove SoC 88AP510
 449
 450 config ARCH_KIRKWOOD
 451         bool "Marvell Kirkwood"
 452         select CPU_FEROCEON
 453         select PCI
 454         select ARCH_REQUIRE_GPIOLIB
 455         select GENERIC_CLOCKEVENTS
 456         select PLAT_ORION
 457         help
 458           Support for the following Marvell Kirkwood series SoCs:
 459           88F6180, 88F6192 and 88F6281.
 460
 461 config ARCH_LOKI
 462         bool "Marvell Loki (88RC8480)"
 463         select CPU_FEROCEON
 464         select GENERIC_CLOCKEVENTS
 465         select PLAT_ORION
 466         help
 467           Support for the Marvell Loki (88RC8480) SoC.
 468
 469 config ARCH_LPC32XX
 470         bool "NXP LPC32XX"
 471         select CPU_ARM926T
 472         select ARCH_REQUIRE_GPIOLIB
 473         select HAVE_IDE
 474         select ARM_AMBA
 475         select USB_ARCH_HAS_OHCI
 476         select COMMON_CLKDEV
 477         select GENERIC_TIME
 478         select GENERIC_CLOCKEVENTS
 479         help
 480           Support for the NXP LPC32XX family of processors
 481
 482 config ARCH_MV78XX0
 483         bool "Marvell MV78xx0"
 484         select CPU_FEROCEON
 485         select PCI
 486         select ARCH_REQUIRE_GPIOLIB
 487         select GENERIC_CLOCKEVENTS
 488         select PLAT_ORION
 489         help
 490           Support for the following Marvell MV78xx0 series SoCs:
 491           MV781x0, MV782x0.
 492
 493 config ARCH_ORION5X
 494         bool "Marvell Orion"
 495         depends on MMU
 496         select CPU_FEROCEON
 497         select PCI
 498         select ARCH_REQUIRE_GPIOLIB
 499         select GENERIC_CLOCKEVENTS
 500         select PLAT_ORION
 501         help
 502           Support for the following Marvell Orion 5x series SoCs:
 503           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 504           Orion-2 (5281), Orion-1-90 (6183).
 505
 506 config ARCH_MMP
 507         bool "Marvell PXA168/910/MMP2"
 508         depends on MMU
 509         select ARCH_REQUIRE_GPIOLIB
 510         select COMMON_CLKDEV
 511         select GENERIC_CLOCKEVENTS
 512         select TICK_ONESHOT
 513         select PLAT_PXA
 514         help
 515           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 516
 517 config ARCH_KS8695
 518         bool "Micrel/Kendin KS8695"
 519         select CPU_ARM922T
 520         select ARCH_REQUIRE_GPIOLIB
 521         select ARCH_USES_GETTIMEOFFSET
 522         help
 523           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 524           System-on-Chip devices.
 525
 526 config ARCH_NS9XXX
 527         bool "NetSilicon NS9xxx"
 528         select CPU_ARM926T
 529         select GENERIC_GPIO
 530         select GENERIC_CLOCKEVENTS
 531         select HAVE_CLK
 532         help
 533           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 534           System.
 535
 536           <http://www.digi.com/products/microprocessors/index.jsp>
 537
 538 config ARCH_W90X900
 539         bool "Nuvoton W90X900 CPU"
 540         select CPU_ARM926T
 541         select ARCH_REQUIRE_GPIOLIB
 542         select COMMON_CLKDEV
 543         select GENERIC_CLOCKEVENTS
 544         help
 545           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 546           At present, the w90x900 has been renamed nuc900, regarding
 547           the ARM series product line, you can login the following
 548           link address to know more.
 549
 550           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 551                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 552
 553 config ARCH_NUC93X
 554         bool "Nuvoton NUC93X CPU"
 555         select CPU_ARM926T
 556         select COMMON_CLKDEV
 557         help
 558           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 559           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 560
 561 config ARCH_PNX4008
 562         bool "Philips Nexperia PNX4008 Mobile"
 563         select CPU_ARM926T
 564         select COMMON_CLKDEV
 565         select ARCH_USES_GETTIMEOFFSET
 566         help
 567           This enables support for Philips PNX4008 mobile platform.
 568
 569 config ARCH_PXA
 570         bool "PXA2xx/PXA3xx-based"
 571         depends on MMU
 572         select ARCH_MTD_XIP
 573         select ARCH_HAS_CPUFREQ
 574         select COMMON_CLKDEV
 575         select ARCH_REQUIRE_GPIOLIB
 576         select GENERIC_CLOCKEVENTS
 577         select TICK_ONESHOT
 578         select PLAT_PXA
 579         help
 580           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 581
 582 config ARCH_MSM
 583         bool "Qualcomm MSM"
 584         select HAVE_CLK
 585         select GENERIC_CLOCKEVENTS
 586         select ARCH_REQUIRE_GPIOLIB
 587         help
 588           Support for Qualcomm MSM/QSD based systems.  This runs on the
 589           apps processor of the MSM/QSD and depends on a shared memory
 590           interface to the modem processor which runs the baseband
 591           stack and controls some vital subsystems
 592           (clock and power control, etc).
 593
 594 config ARCH_SHMOBILE
 595         bool "Renesas SH-Mobile"
 596         help
 597           Support for Renesas's SH-Mobile ARM platforms
 598
 599 config ARCH_RPC
 600         bool "RiscPC"
 601         select ARCH_ACORN
 602         select FIQ
 603         select TIMER_ACORN
 604         select ARCH_MAY_HAVE_PC_FDC
 605         select HAVE_PATA_PLATFORM
 606         select ISA_DMA_API
 607         select NO_IOPORT
 608         select ARCH_SPARSEMEM_ENABLE
 609         select ARCH_USES_GETTIMEOFFSET
 610         help
 611           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 612           CD-ROM interface, serial and parallel port, and the floppy drive.
 613
 614 config ARCH_SA1100
 615         bool "SA1100-based"
 616         select CPU_SA1100
 617         select ISA
 618         select ARCH_SPARSEMEM_ENABLE
 619         select ARCH_MTD_XIP
 620         select ARCH_HAS_CPUFREQ
 621         select CPU_FREQ
 622         select GENERIC_CLOCKEVENTS
 623         select HAVE_CLK
 624         select TICK_ONESHOT
 625         select ARCH_REQUIRE_GPIOLIB
 626         help
 627           Support for StrongARM 11x0 based boards.
 628
 629 config ARCH_S3C2410
 630         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 631         select GENERIC_GPIO
 632         select ARCH_HAS_CPUFREQ
 633         select HAVE_CLK
 634         select ARCH_USES_GETTIMEOFFSET
 635         help
 636           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 637           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 638           the Samsung SMDK2410 development board (and derivatives).
 639
 640           Note, the S3C2416 and the S3C2450 are so close that they even share
 641           the same SoC ID code. This means that there is no seperate machine
 642           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 643
 644 config ARCH_S3C64XX
 645         bool "Samsung S3C64XX"
 646         select PLAT_SAMSUNG
 647         select CPU_V6
 648         select ARM_VIC
 649         select HAVE_CLK
 650         select NO_IOPORT
 651         select ARCH_USES_GETTIMEOFFSET
 652         select ARCH_HAS_CPUFREQ
 653         select ARCH_REQUIRE_GPIOLIB
 654         select SAMSUNG_CLKSRC
 655         select SAMSUNG_IRQ_VIC_TIMER
 656         select SAMSUNG_IRQ_UART
 657         select S3C_GPIO_TRACK
 658         select S3C_GPIO_PULL_UPDOWN
 659         select S3C_GPIO_CFG_S3C24XX
 660         select S3C_GPIO_CFG_S3C64XX
 661         select S3C_DEV_NAND
 662         select USB_ARCH_HAS_OHCI
 663         select SAMSUNG_GPIOLIB_4BIT
 664         help
 665           Samsung S3C64XX series based systems
 666
 667 config ARCH_S5P6440
 668         bool "Samsung S5P6440"
 669         select CPU_V6
 670         select GENERIC_GPIO
 671         select HAVE_CLK
 672         select ARCH_USES_GETTIMEOFFSET
 673         help
 674           Samsung S5P6440 CPU based systems
 675
 676 config ARCH_S5P6442
 677         bool "Samsung S5P6442"
 678         select CPU_V6
 679         select GENERIC_GPIO
 680         select HAVE_CLK
 681         select ARCH_USES_GETTIMEOFFSET
 682         help
 683           Samsung S5P6442 CPU based systems
 684
 685 config ARCH_S5PC100
 686         bool "Samsung S5PC100"
 687         select GENERIC_GPIO
 688         select HAVE_CLK
 689         select CPU_V7
 690         select ARM_L1_CACHE_SHIFT_6
 691         select ARCH_USES_GETTIMEOFFSET
 692         help
 693           Samsung S5PC100 series based systems
 694
 695 config ARCH_S5PV210
 696         bool "Samsung S5PV210/S5PC110"
 697         select CPU_V7
 698         select GENERIC_GPIO
 699         select HAVE_CLK
 700         select ARM_L1_CACHE_SHIFT_6
 701         select ARCH_USES_GETTIMEOFFSET
 702         help
 703           Samsung S5PV210/S5PC110 series based systems
 704
 705 config ARCH_SHARK
 706         bool "Shark"
 707         select CPU_SA110
 708         select ISA
 709         select ISA_DMA
 710         select ZONE_DMA
 711         select PCI
 712         select ARCH_USES_GETTIMEOFFSET
 713         help
 714           Support for the StrongARM based Digital DNARD machine, also known
 715           as "Shark" (<http://www.shark-linux.de/shark.html>).
 716
 717 config ARCH_LH7A40X
 718         bool "Sharp LH7A40X"
 719         select CPU_ARM922T
 720         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 721         select ARCH_USES_GETTIMEOFFSET
 722         help
 723           Say Y here for systems based on one of the Sharp LH7A40X
 724           System on a Chip processors.  These CPUs include an ARM922T
 725           core with a wide array of integrated devices for
 726           hand-held and low-power applications.
 727
 728 config ARCH_U300
 729         bool "ST-Ericsson U300 Series"
 730         depends on MMU
 731         select CPU_ARM926T
 732         select HAVE_TCM
 733         select ARM_AMBA
 734         select ARM_VIC
 735         select GENERIC_CLOCKEVENTS
 736         select COMMON_CLKDEV
 737         select GENERIC_GPIO
 738         help
 739           Support for ST-Ericsson U300 series mobile platforms.
 740
 741 config ARCH_U8500
 742         bool "ST-Ericsson U8500 Series"
 743         select CPU_V7
 744         select ARM_AMBA
 745         select GENERIC_CLOCKEVENTS
 746         select COMMON_CLKDEV
 747         select ARCH_REQUIRE_GPIOLIB
 748         help
 749           Support for ST-Ericsson's Ux500 architecture
 750
 751 config ARCH_NOMADIK
 752         bool "STMicroelectronics Nomadik"
 753         select ARM_AMBA
 754         select ARM_VIC
 755         select CPU_ARM926T
 756         select COMMON_CLKDEV
 757         select GENERIC_CLOCKEVENTS
 758         select ARCH_REQUIRE_GPIOLIB
 759         help
 760           Support for the Nomadik platform by ST-Ericsson
 761
 762 config ARCH_DAVINCI
 763         bool "TI DaVinci"
 764         select GENERIC_CLOCKEVENTS
 765         select ARCH_REQUIRE_GPIOLIB
 766         select ZONE_DMA
 767         select HAVE_IDE
 768         select COMMON_CLKDEV
 769         select GENERIC_ALLOCATOR
 770         select ARCH_HAS_HOLES_MEMORYMODEL
 771         help
 772           Support for TI's DaVinci platform.
 773
 774 config ARCH_OMAP
 775         bool "TI OMAP"
 776         select HAVE_CLK
 777         select ARCH_REQUIRE_GPIOLIB
 778         select ARCH_HAS_CPUFREQ
 779         select GENERIC_CLOCKEVENTS
 780         select ARCH_HAS_HOLES_MEMORYMODEL
 781         help
 782           Support for TI's OMAP platform (OMAP1 and OMAP2).
 783
 784 config PLAT_SPEAR
 785         bool "ST SPEAr"
 786         select ARM_AMBA
 787         select ARCH_REQUIRE_GPIOLIB
 788         select COMMON_CLKDEV
 789         select GENERIC_CLOCKEVENTS
 790         select HAVE_CLK
 791         help
 792           Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
 793
 794 endchoice
 795
 796 #
 797 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 798 # Kconfigs may be included either alphabetically (according to the
 799 # plat- suffix) or along side the corresponding mach-* source.
 800 #
 801 source "arch/arm/mach-aaec2000/Kconfig"
 802
 803 source "arch/arm/mach-at91/Kconfig"
 804
 805 source "arch/arm/mach-bcmring/Kconfig"
 806
 807 source "arch/arm/mach-clps711x/Kconfig"
 808
 809 source "arch/arm/mach-cns3xxx/Kconfig"
 810
 811 source "arch/arm/mach-davinci/Kconfig"
 812
 813 source "arch/arm/mach-dove/Kconfig"
 814
 815 source "arch/arm/mach-ep93xx/Kconfig"
 816
 817 source "arch/arm/mach-footbridge/Kconfig"
 818
 819 source "arch/arm/mach-gemini/Kconfig"
 820
 821 source "arch/arm/mach-h720x/Kconfig"
 822
 823 source "arch/arm/mach-integrator/Kconfig"
 824
 825 source "arch/arm/mach-iop32x/Kconfig"
 826
 827 source "arch/arm/mach-iop33x/Kconfig"
 828
 829 source "arch/arm/mach-iop13xx/Kconfig"
 830
 831 source "arch/arm/mach-ixp4xx/Kconfig"
 832
 833 source "arch/arm/mach-ixp2000/Kconfig"
 834
 835 source "arch/arm/mach-ixp23xx/Kconfig"
 836
 837 source "arch/arm/mach-kirkwood/Kconfig"
 838
 839 source "arch/arm/mach-ks8695/Kconfig"
 840
 841 source "arch/arm/mach-lh7a40x/Kconfig"
 842
 843 source "arch/arm/mach-loki/Kconfig"
 844
 845 source "arch/arm/mach-lpc32xx/Kconfig"
 846
 847 source "arch/arm/mach-msm/Kconfig"
 848
 849 source "arch/arm/mach-mv78xx0/Kconfig"
 850
 851 source "arch/arm/plat-mxc/Kconfig"
 852
 853 source "arch/arm/mach-netx/Kconfig"
 854
 855 source "arch/arm/mach-nomadik/Kconfig"
 856 source "arch/arm/plat-nomadik/Kconfig"
 857
 858 source "arch/arm/mach-ns9xxx/Kconfig"
 859
 860 source "arch/arm/mach-nuc93x/Kconfig"
 861
 862 source "arch/arm/plat-omap/Kconfig"
 863
 864 source "arch/arm/mach-omap1/Kconfig"
 865
 866 source "arch/arm/mach-omap2/Kconfig"
 867
 868 source "arch/arm/mach-orion5x/Kconfig"
 869
 870 source "arch/arm/mach-pxa/Kconfig"
 871 source "arch/arm/plat-pxa/Kconfig"
 872
 873 source "arch/arm/mach-mmp/Kconfig"
 874
 875 source "arch/arm/mach-realview/Kconfig"
 876
 877 source "arch/arm/mach-sa1100/Kconfig"
 878
 879 source "arch/arm/plat-samsung/Kconfig"
 880 source "arch/arm/plat-s3c24xx/Kconfig"
 881 source "arch/arm/plat-s5p/Kconfig"
 882
 883 source "arch/arm/plat-spear/Kconfig"
 884
 885 if ARCH_S3C2410
 886 source "arch/arm/mach-s3c2400/Kconfig"
 887 source "arch/arm/mach-s3c2410/Kconfig"
 888 source "arch/arm/mach-s3c2412/Kconfig"
 889 source "arch/arm/mach-s3c2416/Kconfig"
 890 source "arch/arm/mach-s3c2440/Kconfig"
 891 source "arch/arm/mach-s3c2443/Kconfig"
 892 endif
 893
 894 if ARCH_S3C64XX
 895 source "arch/arm/mach-s3c64xx/Kconfig"
 896 endif
 897
 898 source "arch/arm/mach-s5p6440/Kconfig"
 899
 900 source "arch/arm/mach-s5p6442/Kconfig"
 901
 902 source "arch/arm/mach-s5pc100/Kconfig"
 903
 904 source "arch/arm/mach-s5pv210/Kconfig"
 905
 906 source "arch/arm/mach-shmobile/Kconfig"
 907
 908 source "arch/arm/plat-stmp3xxx/Kconfig"
 909
 910 source "arch/arm/mach-u300/Kconfig"
 911
 912 source "arch/arm/mach-ux500/Kconfig"
 913
 914 source "arch/arm/mach-versatile/Kconfig"
 915
 916 source "arch/arm/mach-vexpress/Kconfig"
 917
 918 source "arch/arm/mach-w90x900/Kconfig"
 919
 920 # Definitions to make life easier
 921 config ARCH_ACORN
 922         bool
 923
 924 config PLAT_IOP
 925         bool
 926         select GENERIC_CLOCKEVENTS
 927
 928 config PLAT_ORION
 929         bool
 930
 931 config PLAT_PXA
 932         bool
 933
 934 config PLAT_VERSATILE
 935         bool
 936
 937 config ARM_TIMER_SP804
 938         bool
 939
 940 source arch/arm/mm/Kconfig
 941
 942 config IWMMXT
 943         bool "Enable iWMMXt support"
 944         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 945         default y if PXA27x || PXA3xx || ARCH_MMP
 946         help
 947           Enable support for iWMMXt context switching at run time if
 948           running on a CPU that supports it.
 949
 950 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 951 config XSCALE_PMU
 952         bool
 953         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 954         default y
 955
 956 config CPU_HAS_PMU
 957         depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
 958                    (!ARCH_OMAP3 || OMAP3_EMU)
 959         default y
 960         bool
 961
 962 if !MMU
 963 source "arch/arm/Kconfig-nommu"
 964 endif
 965
 966 config ARM_ERRATA_411920
 967         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 968         depends on CPU_V6 && !SMP
 969         help
 970           Invalidation of the Instruction Cache operation can
 971           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 972           It does not affect the MPCore. This option enables the ARM Ltd.
 973           recommended workaround.
 974
 975 config ARM_ERRATA_430973
 976         bool "ARM errata: Stale prediction on replaced interworking branch"
 977         depends on CPU_V7
 978         help
 979           This option enables the workaround for the 430973 Cortex-A8
 980           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 981           interworking branch is replaced with another code sequence at the
 982           same virtual address, whether due to self-modifying code or virtual
 983           to physical address re-mapping, Cortex-A8 does not recover from the
 984           stale interworking branch prediction. This results in Cortex-A8
 985           executing the new code sequence in the incorrect ARM or Thumb state.
 986           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 987           and also flushes the branch target cache at every context switch.
 988           Note that setting specific bits in the ACTLR register may not be
 989           available in non-secure mode.
 990
 991 config ARM_ERRATA_458693
 992         bool "ARM errata: Processor deadlock when a false hazard is created"
 993         depends on CPU_V7
 994         help
 995           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 996           erratum. For very specific sequences of memory operations, it is
 997           possible for a hazard condition intended for a cache line to instead
 998           be incorrectly associated with a different cache line. This false
 999           hazard might then cause a processor deadlock. The workaround enables
1000           the L1 caching of the NEON accesses and disables the PLD instruction
1001           in the ACTLR register. Note that setting specific bits in the ACTLR
1002           register may not be available in non-secure mode.
1003
1004 config ARM_ERRATA_460075
1005         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1006         depends on CPU_V7
1007         help
1008           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1009           erratum. Any asynchronous access to the L2 cache may encounter a
1010           situation in which recent store transactions to the L2 cache are lost
1011           and overwritten with stale memory contents from external memory. The
1012           workaround disables the write-allocate mode for the L2 cache via the
1013           ACTLR register. Note that setting specific bits in the ACTLR register
1014           may not be available in non-secure mode.
1015
1016 config PL310_ERRATA_588369
1017         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1018         depends on CACHE_L2X0 && ARCH_OMAP4
1019         help
1020            The PL310 L2 cache controller implements three types of Clean &
1021            Invalidate maintenance operations: by Physical Address
1022            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1023            They are architecturally defined to behave as the execution of a
1024            clean operation followed immediately by an invalidate operation,
1025            both performing to the same memory location. This functionality
1026            is not correctly implemented in PL310 as clean lines are not
1027            invalidated as a result of these operations. Note that this errata
1028            uses Texas Instrument's secure monitor api.
1029 endmenu
1030
1031 source "arch/arm/common/Kconfig"
1032
1033 menu "Bus support"
1034
1035 config ARM_AMBA
1036         bool
1037
1038 config ISA
1039         bool
1040         help
1041           Find out whether you have ISA slots on your motherboard.  ISA is the
1042           name of a bus system, i.e. the way the CPU talks to the other stuff
1043           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1044           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1045           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1046
1047 # Select ISA DMA controller support
1048 config ISA_DMA
1049         bool
1050         select ISA_DMA_API
1051
1052 # Select ISA DMA interface
1053 config ISA_DMA_API
1054         bool
1055
1056 config PCI
1057         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1058         help
1059           Find out whether you have a PCI motherboard. PCI is the name of a
1060           bus system, i.e. the way the CPU talks to the other stuff inside
1061           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1062           VESA. If you have PCI, say Y, otherwise N.
1063
1064 config PCI_DOMAINS
1065         bool
1066         depends on PCI
1067
1068 config PCI_SYSCALL
1069         def_bool PCI
1070
1071 # Select the host bridge type
1072 config PCI_HOST_VIA82C505
1073         bool
1074         depends on PCI && ARCH_SHARK
1075         default y
1076
1077 config PCI_HOST_ITE8152
1078         bool
1079         depends on PCI && MACH_ARMCORE
1080         default y
1081         select DMABOUNCE
1082
1083 source "drivers/pci/Kconfig"
1084
1085 source "drivers/pcmcia/Kconfig"
1086
1087 endmenu
1088
1089 menu "Kernel Features"
1090
1091 source "kernel/time/Kconfig"
1092
1093 config SMP
1094         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1095         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1096                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1097                  ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1098         depends on GENERIC_CLOCKEVENTS
1099         select USE_GENERIC_SMP_HELPERS
1100         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1101         help
1102           This enables support for systems with more than one CPU. If you have
1103           a system with only one CPU, like most personal computers, say N. If
1104           you have a system with more than one CPU, say Y.
1105
1106           If you say N here, the kernel will run on single and multiprocessor
1107           machines, but will use only one CPU of a multiprocessor machine. If
1108           you say Y here, the kernel will run on many, but not all, single
1109           processor machines. On a single processor machine, the kernel will
1110           run faster if you say N here.
1111
1112           See also <file:Documentation/i386/IO-APIC.txt>,
1113           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1114           <http://www.linuxdoc.org/docs.html#howto>.
1115
1116           If you don't know what to do here, say N.
1117
1118 config HAVE_ARM_SCU
1119         bool
1120         depends on SMP
1121         help
1122           This option enables support for the ARM system coherency unit
1123
1124 config HAVE_ARM_TWD
1125         bool
1126         depends on SMP
1127         help
1128           This options enables support for the ARM timer and watchdog unit
1129
1130 choice
1131         prompt "Memory split"
1132         default VMSPLIT_3G
1133         help
1134           Select the desired split between kernel and user memory.
1135
1136           If you are not absolutely sure what you are doing, leave this
1137           option alone!
1138
1139         config VMSPLIT_3G
1140                 bool "3G/1G user/kernel split"
1141         config VMSPLIT_2G
1142                 bool "2G/2G user/kernel split"
1143         config VMSPLIT_1G
1144                 bool "1G/3G user/kernel split"
1145 endchoice
1146
1147 config PAGE_OFFSET
1148         hex
1149         default 0x40000000 if VMSPLIT_1G
1150         default 0x80000000 if VMSPLIT_2G
1151         default 0xC0000000
1152
1153 config NR_CPUS
1154         int "Maximum number of CPUs (2-32)"
1155         range 2 32
1156         depends on SMP
1157         default "4"
1158
1159 config HOTPLUG_CPU
1160         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1161         depends on SMP && HOTPLUG && EXPERIMENTAL
1162         help
1163           Say Y here to experiment with turning CPUs off and on.  CPUs
1164           can be controlled through /sys/devices/system/cpu.
1165
1166 config LOCAL_TIMERS
1167         bool "Use local timer interrupts"
1168         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1169                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1170                 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1171         default y
1172         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || ARCH_U8500)
1173         help
1174           Enable support for local timers on SMP platforms, rather then the
1175           legacy IPI broadcast method.  Local timers allows the system
1176           accounting to be spread across the timer interval, preventing a
1177           "thundering herd" at every timer tick.
1178
1179 source kernel/Kconfig.preempt
1180
1181 config HZ
1182         int
1183         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1184         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1185         default AT91_TIMER_HZ if ARCH_AT91
1186         default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1187         default 100
1188
1189 config THUMB2_KERNEL
1190         bool "Compile the kernel in Thumb-2 mode"
1191         depends on CPU_V7 && EXPERIMENTAL
1192         select AEABI
1193         select ARM_ASM_UNIFIED
1194         help
1195           By enabling this option, the kernel will be compiled in
1196           Thumb-2 mode. A compiler/assembler that understand the unified
1197           ARM-Thumb syntax is needed.
1198
1199           If unsure, say N.
1200
1201 config ARM_ASM_UNIFIED
1202         bool
1203
1204 config AEABI
1205         bool "Use the ARM EABI to compile the kernel"
1206         help
1207           This option allows for the kernel to be compiled using the latest
1208           ARM ABI (aka EABI).  This is only useful if you are using a user
1209           space environment that is also compiled with EABI.
1210
1211           Since there are major incompatibilities between the legacy ABI and
1212           EABI, especially with regard to structure member alignment, this
1213           option also changes the kernel syscall calling convention to
1214           disambiguate both ABIs and allow for backward compatibility support
1215           (selected with CONFIG_OABI_COMPAT).
1216
1217           To use this you need GCC version 4.0.0 or later.
1218
1219 config OABI_COMPAT
1220         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1221         depends on AEABI && EXPERIMENTAL
1222         default y
1223         help
1224           This option preserves the old syscall interface along with the
1225           new (ARM EABI) one. It also provides a compatibility layer to
1226           intercept syscalls that have structure arguments which layout
1227           in memory differs between the legacy ABI and the new ARM EABI
1228           (only for non "thumb" binaries). This option adds a tiny
1229           overhead to all syscalls and produces a slightly larger kernel.
1230           If you know you'll be using only pure EABI user space then you
1231           can say N here. If this option is not selected and you attempt
1232           to execute a legacy ABI binary then the result will be
1233           UNPREDICTABLE (in fact it can be predicted that it won't work
1234           at all). If in doubt say Y.
1235
1236 config ARCH_HAS_HOLES_MEMORYMODEL
1237         bool
1238
1239 config ARCH_SPARSEMEM_ENABLE
1240         bool
1241
1242 config ARCH_SPARSEMEM_DEFAULT
1243         def_bool ARCH_SPARSEMEM_ENABLE
1244
1245 config ARCH_SELECT_MEMORY_MODEL
1246         def_bool ARCH_SPARSEMEM_ENABLE
1247
1248 config HIGHMEM
1249         bool "High Memory Support (EXPERIMENTAL)"
1250         depends on MMU && EXPERIMENTAL
1251         help
1252           The address space of ARM processors is only 4 Gigabytes large
1253           and it has to accommodate user address space, kernel address
1254           space as well as some memory mapped IO. That means that, if you
1255           have a large amount of physical memory and/or IO, not all of the
1256           memory can be "permanently mapped" by the kernel. The physical
1257           memory that is not permanently mapped is called "high memory".
1258
1259           Depending on the selected kernel/user memory split, minimum
1260           vmalloc space and actual amount of RAM, you may not need this
1261           option which should result in a slightly faster kernel.
1262
1263           If unsure, say n.
1264
1265 config HIGHPTE
1266         bool "Allocate 2nd-level pagetables from highmem"
1267         depends on HIGHMEM
1268         depends on !OUTER_CACHE
1269
1270 config HW_PERF_EVENTS
1271         bool "Enable hardware performance counter support for perf events"
1272         depends on PERF_EVENTS && CPU_HAS_PMU
1273         default y
1274         help
1275           Enable hardware performance counter support for perf events. If
1276           disabled, perf events will use software events only.
1277
1278 config SPARSE_IRQ
1279         def_bool n
1280         help
1281           This enables support for sparse irqs. This is useful in general
1282           as most CPUs have a fairly sparse array of IRQ vectors, which
1283           the irq_desc then maps directly on to. Systems with a high
1284           number of off-chip IRQs will want to treat this as
1285           experimental until they have been independently verified.
1286
1287 source "mm/Kconfig"
1288
1289 config FORCE_MAX_ZONEORDER
1290         int "Maximum zone order" if ARCH_SHMOBILE
1291         range 11 64 if ARCH_SHMOBILE
1292         default "9" if SA1111
1293         default "11"
1294         help
1295           The kernel memory allocator divides physically contiguous memory
1296           blocks into "zones", where each zone is a power of two number of
1297           pages.  This option selects the largest power of two that the kernel
1298           keeps in the memory allocator.  If you need to allocate very large
1299           blocks of physically contiguous memory, then you may need to
1300           increase this value.
1301
1302           This config option is actually maximum order plus one. For example,
1303           a value of 11 means that the largest free memory block is 2^10 pages.
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 config CC_STACKPROTECTOR
1389         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1390         help
1391           This option turns on the -fstack-protector GCC feature. This
1392           feature puts, at the beginning of functions, a canary value on
1393           the stack just before the return address, and validates
1394           the value just before actually returning.  Stack based buffer
1395           overflows (that need to overwrite this return address) now also
1396           overwrite the canary, which gets detected and the attack is then
1397           neutralized via a kernel panic.
1398           This feature requires gcc version 4.2 or above.
1399
1400 config DEPRECATED_PARAM_STRUCT
1401         bool "Provide old way to pass kernel parameters"
1402         help
1403           This was deprecated in 2001 and announced to live on for 5 years.
1404           Some old boot loaders still use this way.
1405
1406 endmenu
1407
1408 menu "Boot options"
1409
1410 # Compressed boot loader in ROM.  Yes, we really want to ask about
1411 # TEXT and BSS so we preserve their values in the config files.
1412 config ZBOOT_ROM_TEXT
1413         hex "Compressed ROM boot loader base address"
1414         default "0"
1415         help
1416           The physical address at which the ROM-able zImage is to be
1417           placed in the target.  Platforms which normally make use of
1418           ROM-able zImage formats normally set this to a suitable
1419           value in their defconfig file.
1420
1421           If ZBOOT_ROM is not enabled, this has no effect.
1422
1423 config ZBOOT_ROM_BSS
1424         hex "Compressed ROM boot loader BSS address"
1425         default "0"
1426         help
1427           The base address of an area of read/write memory in the target
1428           for the ROM-able zImage which must be available while the
1429           decompressor is running. It must be large enough to hold the
1430           entire decompressed kernel plus an additional 128 KiB.
1431           Platforms which normally make use of ROM-able zImage formats
1432           normally set this to a suitable value in their defconfig file.
1433
1434           If ZBOOT_ROM is not enabled, this has no effect.
1435
1436 config ZBOOT_ROM
1437         bool "Compressed boot loader in ROM/flash"
1438         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1439         help
1440           Say Y here if you intend to execute your compressed kernel image
1441           (zImage) directly from ROM or flash.  If unsure, say N.
1442
1443 config CMDLINE
1444         string "Default kernel command string"
1445         default ""
1446         help
1447           On some architectures (EBSA110 and CATS), there is currently no way
1448           for the boot loader to pass arguments to the kernel. For these
1449           architectures, you should supply some command-line options at build
1450           time by entering them here. As a minimum, you should specify the
1451           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1452
1453 config CMDLINE_FORCE
1454         bool "Always use the default kernel command string"
1455         depends on CMDLINE != ""
1456         help
1457           Always use the default kernel command string, even if the boot
1458           loader passes other arguments to the kernel.
1459           This is useful if you cannot or don't want to change the
1460           command-line options your boot loader passes to the kernel.
1461
1462           If unsure, say N.
1463
1464 config XIP_KERNEL
1465         bool "Kernel Execute-In-Place from ROM"
1466         depends on !ZBOOT_ROM
1467         help
1468           Execute-In-Place allows the kernel to run from non-volatile storage
1469           directly addressable by the CPU, such as NOR flash. This saves RAM
1470           space since the text section of the kernel is not loaded from flash
1471           to RAM.  Read-write sections, such as the data section and stack,
1472           are still copied to RAM.  The XIP kernel is not compressed since
1473           it has to run directly from flash, so it will take more space to
1474           store it.  The flash address used to link the kernel object files,
1475           and for storing it, is configuration dependent. Therefore, if you
1476           say Y here, you must know the proper physical address where to
1477           store the kernel image depending on your own flash memory usage.
1478
1479           Also note that the make target becomes "make xipImage" rather than
1480           "make zImage" or "make Image".  The final kernel binary to put in
1481           ROM memory will be arch/arm/boot/xipImage.
1482
1483           If unsure, say N.
1484
1485 config XIP_PHYS_ADDR
1486         hex "XIP Kernel Physical Location"
1487         depends on XIP_KERNEL
1488         default "0x00080000"
1489         help
1490           This is the physical address in your flash memory the kernel will
1491           be linked for and stored to.  This address is dependent on your
1492           own flash usage.
1493
1494 config KEXEC
1495         bool "Kexec system call (EXPERIMENTAL)"
1496         depends on EXPERIMENTAL
1497         help
1498           kexec is a system call that implements the ability to shutdown your
1499           current kernel, and to start another kernel.  It is like a reboot
1500           but it is independent of the system firmware.   And like a reboot
1501           you can start any kernel with it, not just Linux.
1502
1503           It is an ongoing process to be certain the hardware in a machine
1504           is properly shutdown, so do not be surprised if this code does not
1505           initially work for you.  It may help to enable device hotplugging
1506           support.
1507
1508 config ATAGS_PROC
1509         bool "Export atags in procfs"
1510         depends on KEXEC
1511         default y
1512         help
1513           Should the atags used to boot the kernel be exported in an "atags"
1514           file in procfs. Useful with kexec.
1515
1516 config AUTO_ZRELADDR
1517         bool "Auto calculation of the decompressed kernel image address"
1518         depends on !ZBOOT_ROM && !ARCH_U300
1519         help
1520           ZRELADDR is the physical address where the decompressed kernel
1521           image will be placed. If AUTO_ZRELADDR is selected, the address
1522           will be determined at run-time by masking the current IP with
1523           0xf8000000. This assumes the zImage being placed in the first 128MB
1524           from start of memory.
1525
1526 config ZRELADDR
1527         hex "Physical address of the decompressed kernel image"
1528         depends on !AUTO_ZRELADDR
1529         default 0x00008000 if ARCH_BCMRING ||\
1530                 ARCH_CNS3XXX ||\
1531                 ARCH_DOVE ||\
1532                 ARCH_EBSA110 ||\
1533                 ARCH_FOOTBRIDGE ||\
1534                 ARCH_INTEGRATOR ||\
1535                 ARCH_IOP13XX ||\
1536                 ARCH_IOP33X ||\
1537                 ARCH_IXP2000 ||\
1538                 ARCH_IXP23XX ||\
1539                 ARCH_IXP4XX ||\
1540                 ARCH_KIRKWOOD ||\
1541                 ARCH_KS8695 ||\
1542                 ARCH_LOKI ||\
1543                 ARCH_MMP ||\
1544                 ARCH_MV78XX0 ||\
1545                 ARCH_NOMADIK ||\
1546                 ARCH_NUC93X ||\
1547                 ARCH_NS9XXX ||\
1548                 ARCH_ORION5X ||\
1549                 ARCH_SPEAR3XX ||\
1550                 ARCH_SPEAR6XX ||\
1551                 ARCH_U8500 ||\
1552                 ARCH_VERSATILE ||\
1553                 ARCH_W90X900
1554         default 0x08008000 if ARCH_MX1 ||\
1555                 ARCH_SHARK
1556         default 0x10008000 if ARCH_MSM ||\
1557                 ARCH_OMAP1 ||\
1558                 ARCH_RPC
1559         default 0x20008000 if ARCH_S5P6440 ||\
1560                 ARCH_S5P6442 ||\
1561                 ARCH_S5PC100 ||\
1562                 ARCH_S5PV210
1563         default 0x30008000 if ARCH_S3C2410 ||\
1564                 ARCH_S3C2400 ||\
1565                 ARCH_S3C2412 ||\
1566                 ARCH_S3C2416 ||\
1567                 ARCH_S3C2440 ||\
1568                 ARCH_S3C2443
1569         default 0x40008000 if ARCH_STMP378X ||\
1570                 ARCH_STMP37XX ||\
1571                 ARCH_SH7372 ||\
1572                 ARCH_SH7377
1573         default 0x50008000 if ARCH_S3C64XX ||\
1574                 ARCH_SH7367
1575         default 0x60008000 if ARCH_VEXPRESS
1576         default 0x80008000 if ARCH_MX25 ||\
1577                 ARCH_MX3 ||\
1578                 ARCH_NETX ||\
1579                 ARCH_OMAP2PLUS ||\
1580                 ARCH_PNX4008
1581         default 0x90008000 if ARCH_MX5 ||\
1582                 ARCH_MX91231
1583         default 0xa0008000 if ARCH_IOP32X ||\
1584                 ARCH_PXA ||\
1585                 MACH_MX27
1586         default 0xc0008000 if ARCH_LH7A40X ||\
1587                 MACH_MX21
1588         default 0xf0008000 if ARCH_AAEC2000 ||\
1589                 ARCH_L7200
1590         default 0xc0028000 if ARCH_CLPS711X
1591         default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1592         default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1593         default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1594         default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1595         default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1596         default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1597         default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1598         default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1599         default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1600         default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1601         default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1602         default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1603         default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1604         default 0xc0208000 if ARCH_SA1100 && SA1111
1605         default 0xc0008000 if ARCH_SA1100 && !SA1111
1606         default 0x30108000 if ARCH_S3C2410 && PM_H1940
1607         default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1608         default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1609         help
1610           ZRELADDR is the physical address where the decompressed kernel
1611           image will be placed. ZRELADDR has to be specified when the
1612           assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1613           selected.
1614
1615 endmenu
1616
1617 menu "CPU Power Management"
1618
1619 if ARCH_HAS_CPUFREQ
1620
1621 source "drivers/cpufreq/Kconfig"
1622
1623 config CPU_FREQ_SA1100
1624         bool
1625
1626 config CPU_FREQ_SA1110
1627         bool
1628
1629 config CPU_FREQ_INTEGRATOR
1630         tristate "CPUfreq driver for ARM Integrator CPUs"
1631         depends on ARCH_INTEGRATOR && CPU_FREQ
1632         default y
1633         help
1634           This enables the CPUfreq driver for ARM Integrator CPUs.
1635
1636           For details, take a look at <file:Documentation/cpu-freq>.
1637
1638           If in doubt, say Y.
1639
1640 config CPU_FREQ_PXA
1641         bool
1642         depends on CPU_FREQ && ARCH_PXA && PXA25x
1643         default y
1644         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1645
1646 config CPU_FREQ_S3C64XX
1647         bool "CPUfreq support for Samsung S3C64XX CPUs"
1648         depends on CPU_FREQ && CPU_S3C6410
1649
1650 config CPU_FREQ_S3C
1651         bool
1652         help
1653           Internal configuration node for common cpufreq on Samsung SoC
1654
1655 config CPU_FREQ_S3C24XX
1656         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1657         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1658         select CPU_FREQ_S3C
1659         help
1660           This enables the CPUfreq driver for the Samsung S3C24XX family
1661           of CPUs.
1662
1663           For details, take a look at <file:Documentation/cpu-freq>.
1664
1665           If in doubt, say N.
1666
1667 config CPU_FREQ_S3C24XX_PLL
1668         bool "Support CPUfreq changing of PLL frequency"
1669         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1670         help
1671           Compile in support for changing the PLL frequency from the
1672           S3C24XX series CPUfreq driver. The PLL takes time to settle
1673           after a frequency change, so by default it is not enabled.
1674
1675           This also means that the PLL tables for the selected CPU(s) will
1676           be built which may increase the size of the kernel image.
1677
1678 config CPU_FREQ_S3C24XX_DEBUG
1679         bool "Debug CPUfreq Samsung driver core"
1680         depends on CPU_FREQ_S3C24XX
1681         help
1682           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1683
1684 config CPU_FREQ_S3C24XX_IODEBUG
1685         bool "Debug CPUfreq Samsung driver IO timing"
1686         depends on CPU_FREQ_S3C24XX
1687         help
1688           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1689
1690 config CPU_FREQ_S3C24XX_DEBUGFS
1691         bool "Export debugfs for CPUFreq"
1692         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1693         help
1694           Export status information via debugfs.
1695
1696 endif
1697
1698 source "drivers/cpuidle/Kconfig"
1699
1700 endmenu
1701
1702 menu "Floating point emulation"
1703
1704 comment "At least one emulation must be selected"
1705
1706 config FPE_NWFPE
1707         bool "NWFPE math emulation"
1708         depends on !AEABI || OABI_COMPAT
1709         ---help---
1710           Say Y to include the NWFPE floating point emulator in the kernel.
1711           This is necessary to run most binaries. Linux does not currently
1712           support floating point hardware so you need to say Y here even if
1713           your machine has an FPA or floating point co-processor podule.
1714
1715           You may say N here if you are going to load the Acorn FPEmulator
1716           early in the bootup.
1717
1718 config FPE_NWFPE_XP
1719         bool "Support extended precision"
1720         depends on FPE_NWFPE
1721         help
1722           Say Y to include 80-bit support in the kernel floating-point
1723           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1724           Note that gcc does not generate 80-bit operations by default,
1725           so in most cases this option only enlarges the size of the
1726           floating point emulator without any good reason.
1727
1728           You almost surely want to say N here.
1729
1730 config FPE_FASTFPE
1731         bool "FastFPE math emulation (EXPERIMENTAL)"
1732         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1733         ---help---
1734           Say Y here to include the FAST floating point emulator in the kernel.
1735           This is an experimental much faster emulator which now also has full
1736           precision for the mantissa.  It does not support any exceptions.
1737           It is very simple, and approximately 3-6 times faster than NWFPE.
1738
1739           It should be sufficient for most programs.  It may be not suitable
1740           for scientific calculations, but you have to check this for yourself.
1741           If you do not feel you need a faster FP emulation you should better
1742           choose NWFPE.
1743
1744 config VFP
1745         bool "VFP-format floating point maths"
1746         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1747         help
1748           Say Y to include VFP support code in the kernel. This is needed
1749           if your hardware includes a VFP unit.
1750
1751           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1752           release notes and additional status information.
1753
1754           Say N if your target does not have VFP hardware.
1755
1756 config VFPv3
1757         bool
1758         depends on VFP
1759         default y if CPU_V7
1760
1761 config NEON
1762         bool "Advanced SIMD (NEON) Extension support"
1763         depends on VFPv3 && CPU_V7
1764         help
1765           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1766           Extension.
1767
1768 endmenu
1769
1770 menu "Userspace binary formats"
1771
1772 source "fs/Kconfig.binfmt"
1773
1774 config ARTHUR
1775         tristate "RISC OS personality"
1776         depends on !AEABI
1777         help
1778           Say Y here to include the kernel code necessary if you want to run
1779           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1780           experimental; if this sounds frightening, say N and sleep in peace.
1781           You can also say M here to compile this support as a module (which
1782           will be called arthur).
1783
1784 endmenu
1785
1786 menu "Power management options"
1787
1788 source "kernel/power/Kconfig"
1789
1790 config ARCH_SUSPEND_POSSIBLE
1791         def_bool y
1792
1793 endmenu
1794
1795 source "net/Kconfig"
1796
1797 source "drivers/Kconfig"
1798
1799 source "fs/Kconfig"
1800
1801 source "arch/arm/Kconfig.debug"
1802
1803 source "security/Kconfig"
1804
1805 source "crypto/Kconfig"
1806
1807 source "lib/Kconfig"