arch/arm/Kconfig

   1 config ARM
   2         bool
   3         default y
   4         select HAVE_AOUT
   5         select HAVE_IDE
   6         select HAVE_MEMBLOCK
   7         select RTC_LIB
   8         select SYS_SUPPORTS_APM_EMULATION
   9         select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
  10         select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  11         select HAVE_ARCH_KGDB
  12         select HAVE_KPROBES if (!XIP_KERNEL)
  13         select HAVE_KRETPROBES if (HAVE_KPROBES)
  14         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  15         select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  16         select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  17         select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  18         select HAVE_GENERIC_DMA_COHERENT
  19         select HAVE_KERNEL_GZIP
  20         select HAVE_KERNEL_LZO
  21         select HAVE_KERNEL_LZMA
  22         select HAVE_IRQ_WORK
  23         select HAVE_PERF_EVENTS
  24         select PERF_USE_VMALLOC
  25         select HAVE_REGS_AND_STACK_ACCESS_API
  26         select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
  27         help
  28           The ARM series is a line of low-power-consumption RISC chip designs
  29           licensed by ARM Ltd and targeted at embedded applications and
  30           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  31           manufactured, but legacy ARM-based PC hardware remains popular in
  32           Europe.  There is an ARM Linux project with a web page at
  33           <http://www.arm.linux.org.uk/>.
  34
  35 config HAVE_PWM
  36         bool
  37
  38 config SYS_SUPPORTS_APM_EMULATION
  39         bool
  40
  41 config GENERIC_GPIO
  42         bool
  43
  44 config ARCH_USES_GETTIMEOFFSET
  45         bool
  46         default n
  47
  48 config GENERIC_CLOCKEVENTS
  49         bool
  50
  51 config GENERIC_CLOCKEVENTS_BROADCAST
  52         bool
  53         depends on GENERIC_CLOCKEVENTS
  54         default y if SMP
  55
  56 config HAVE_TCM
  57         bool
  58         select GENERIC_ALLOCATOR
  59
  60 config HAVE_PROC_CPU
  61         bool
  62
  63 config NO_IOPORT
  64         bool
  65
  66 config EISA
  67         bool
  68         ---help---
  69           The Extended Industry Standard Architecture (EISA) bus was
  70           developed as an open alternative to the IBM MicroChannel bus.
  71
  72           The EISA bus provided some of the features of the IBM MicroChannel
  73           bus while maintaining backward compatibility with cards made for
  74           the older ISA bus.  The EISA bus saw limited use between 1988 and
  75           1995 when it was made obsolete by the PCI bus.
  76
  77           Say Y here if you are building a kernel for an EISA-based machine.
  78
  79           Otherwise, say N.
  80
  81 config SBUS
  82         bool
  83
  84 config MCA
  85         bool
  86         help
  87           MicroChannel Architecture is found in some IBM PS/2 machines and
  88           laptops.  It is a bus system similar to PCI or ISA. See
  89           <file:Documentation/mca.txt> (and especially the web page given
  90           there) before attempting to build an MCA bus kernel.
  91
  92 config GENERIC_HARDIRQS
  93         bool
  94         default y
  95
  96 config STACKTRACE_SUPPORT
  97         bool
  98         default y
  99
 100 config HAVE_LATENCYTOP_SUPPORT
 101         bool
 102         depends on !SMP
 103         default y
 104
 105 config LOCKDEP_SUPPORT
 106         bool
 107         default y
 108
 109 config TRACE_IRQFLAGS_SUPPORT
 110         bool
 111         default y
 112
 113 config HARDIRQS_SW_RESEND
 114         bool
 115         default y
 116
 117 config GENERIC_IRQ_PROBE
 118         bool
 119         default y
 120
 121 config GENERIC_LOCKBREAK
 122         bool
 123         default y
 124         depends on SMP && PREEMPT
 125
 126 config RWSEM_GENERIC_SPINLOCK
 127         bool
 128         default y
 129
 130 config RWSEM_XCHGADD_ALGORITHM
 131         bool
 132
 133 config ARCH_HAS_ILOG2_U32
 134         bool
 135
 136 config ARCH_HAS_ILOG2_U64
 137         bool
 138
 139 config ARCH_HAS_CPUFREQ
 140         bool
 141         help
 142           Internal node to signify that the ARCH has CPUFREQ support
 143           and that the relevant menu configurations are displayed for
 144           it.
 145
 146 config ARCH_HAS_CPU_IDLE_WAIT
 147        def_bool y
 148
 149 config GENERIC_HWEIGHT
 150         bool
 151         default y
 152
 153 config GENERIC_CALIBRATE_DELAY
 154         bool
 155         default y
 156
 157 config ARCH_MAY_HAVE_PC_FDC
 158         bool
 159
 160 config ZONE_DMA
 161         bool
 162
 163 config NEED_DMA_MAP_STATE
 164        def_bool y
 165
 166 config GENERIC_ISA_DMA
 167         bool
 168
 169 config FIQ
 170         bool
 171
 172 config ARCH_MTD_XIP
 173         bool
 174
 175 config GENERIC_HARDIRQS_NO__DO_IRQ
 176         def_bool y
 177
 178 config ARM_L1_CACHE_SHIFT_6
 179         bool
 180         help
 181           Setting ARM L1 cache line size to 64 Bytes.
 182
 183 config VECTORS_BASE
 184         hex
 185         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 186         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 187         default 0x00000000
 188         help
 189           The base address of exception vectors.
 190
 191 source "init/Kconfig"
 192
 193 source "kernel/Kconfig.freezer"
 194
 195 menu "System Type"
 196
 197 config MMU
 198         bool "MMU-based Paged Memory Management Support"
 199         default y
 200         help
 201           Select if you want MMU-based virtualised addressing space
 202           support by paged memory management. If unsure, say 'Y'.
 203
 204 #
 205 # The "ARM system type" choice list is ordered alphabetically by option
 206 # text.  Please add new entries in the option alphabetic order.
 207 #
 208 choice
 209         prompt "ARM system type"
 210         default ARCH_VERSATILE
 211
 212 config ARCH_AAEC2000
 213         bool "Agilent AAEC-2000 based"
 214         select CPU_ARM920T
 215         select ARM_AMBA
 216         select HAVE_CLK
 217         select ARCH_USES_GETTIMEOFFSET
 218         help
 219           This enables support for systems based on the Agilent AAEC-2000
 220
 221 config ARCH_INTEGRATOR
 222         bool "ARM Ltd. Integrator family"
 223         select ARM_AMBA
 224         select ARCH_HAS_CPUFREQ
 225         select COMMON_CLKDEV
 226         select ICST
 227         select GENERIC_CLOCKEVENTS
 228         select PLAT_VERSATILE
 229         help
 230           Support for ARM's Integrator platform.
 231
 232 config ARCH_REALVIEW
 233         bool "ARM Ltd. RealView family"
 234         select ARM_AMBA
 235         select COMMON_CLKDEV
 236         select ICST
 237         select GENERIC_CLOCKEVENTS
 238         select ARCH_WANT_OPTIONAL_GPIOLIB
 239         select PLAT_VERSATILE
 240         select ARM_TIMER_SP804
 241         select GPIO_PL061 if GPIOLIB
 242         help
 243           This enables support for ARM Ltd RealView boards.
 244
 245 config ARCH_VERSATILE
 246         bool "ARM Ltd. Versatile family"
 247         select ARM_AMBA
 248         select ARM_VIC
 249         select COMMON_CLKDEV
 250         select ICST
 251         select GENERIC_CLOCKEVENTS
 252         select ARCH_WANT_OPTIONAL_GPIOLIB
 253         select PLAT_VERSATILE
 254         select ARM_TIMER_SP804
 255         help
 256           This enables support for ARM Ltd Versatile board.
 257
 258 config ARCH_VEXPRESS
 259         bool "ARM Ltd. Versatile Express family"
 260         select ARCH_WANT_OPTIONAL_GPIOLIB
 261         select ARM_AMBA
 262         select ARM_TIMER_SP804
 263         select COMMON_CLKDEV
 264         select GENERIC_CLOCKEVENTS
 265         select HAVE_CLK
 266         select ICST
 267         select PLAT_VERSATILE
 268         help
 269           This enables support for the ARM Ltd Versatile Express boards.
 270
 271 config ARCH_AT91
 272         bool "Atmel AT91"
 273         select ARCH_REQUIRE_GPIOLIB
 274         select HAVE_CLK
 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         select SPARSE_IRQ
 515         help
 516           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 517
 518 config ARCH_KS8695
 519         bool "Micrel/Kendin KS8695"
 520         select CPU_ARM922T
 521         select ARCH_REQUIRE_GPIOLIB
 522         select ARCH_USES_GETTIMEOFFSET
 523         help
 524           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 525           System-on-Chip devices.
 526
 527 config ARCH_NS9XXX
 528         bool "NetSilicon NS9xxx"
 529         select CPU_ARM926T
 530         select GENERIC_GPIO
 531         select GENERIC_CLOCKEVENTS
 532         select HAVE_CLK
 533         help
 534           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 535           System.
 536
 537           <http://www.digi.com/products/microprocessors/index.jsp>
 538
 539 config ARCH_W90X900
 540         bool "Nuvoton W90X900 CPU"
 541         select CPU_ARM926T
 542         select ARCH_REQUIRE_GPIOLIB
 543         select COMMON_CLKDEV
 544         select GENERIC_CLOCKEVENTS
 545         help
 546           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 547           At present, the w90x900 has been renamed nuc900, regarding
 548           the ARM series product line, you can login the following
 549           link address to know more.
 550
 551           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 552                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 553
 554 config ARCH_NUC93X
 555         bool "Nuvoton NUC93X CPU"
 556         select CPU_ARM926T
 557         select COMMON_CLKDEV
 558         help
 559           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 560           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 561
 562 config ARCH_TEGRA
 563         bool "NVIDIA Tegra"
 564         select GENERIC_TIME
 565         select GENERIC_CLOCKEVENTS
 566         select GENERIC_GPIO
 567         select HAVE_CLK
 568         select COMMON_CLKDEV
 569         select ARCH_HAS_BARRIERS if CACHE_L2X0
 570         select ARCH_HAS_CPUFREQ
 571         help
 572           This enables support for NVIDIA Tegra based systems (Tegra APX,
 573           Tegra 6xx and Tegra 2 series).
 574
 575 config ARCH_PNX4008
 576         bool "Philips Nexperia PNX4008 Mobile"
 577         select CPU_ARM926T
 578         select COMMON_CLKDEV
 579         select ARCH_USES_GETTIMEOFFSET
 580         help
 581           This enables support for Philips PNX4008 mobile platform.
 582
 583 config ARCH_PXA
 584         bool "PXA2xx/PXA3xx-based"
 585         depends on MMU
 586         select ARCH_MTD_XIP
 587         select ARCH_HAS_CPUFREQ
 588         select COMMON_CLKDEV
 589         select ARCH_REQUIRE_GPIOLIB
 590         select GENERIC_CLOCKEVENTS
 591         select TICK_ONESHOT
 592         select PLAT_PXA
 593         select SPARSE_IRQ
 594         help
 595           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 596
 597 config ARCH_MSM
 598         bool "Qualcomm MSM"
 599         select HAVE_CLK
 600         select GENERIC_CLOCKEVENTS
 601         select ARCH_REQUIRE_GPIOLIB
 602         help
 603           Support for Qualcomm MSM/QSD based systems.  This runs on the
 604           apps processor of the MSM/QSD and depends on a shared memory
 605           interface to the modem processor which runs the baseband
 606           stack and controls some vital subsystems
 607           (clock and power control, etc).
 608
 609 config ARCH_SHMOBILE
 610         bool "Renesas SH-Mobile"
 611         help
 612           Support for Renesas's SH-Mobile ARM platforms
 613
 614 config ARCH_RPC
 615         bool "RiscPC"
 616         select ARCH_ACORN
 617         select FIQ
 618         select TIMER_ACORN
 619         select ARCH_MAY_HAVE_PC_FDC
 620         select HAVE_PATA_PLATFORM
 621         select ISA_DMA_API
 622         select NO_IOPORT
 623         select ARCH_SPARSEMEM_ENABLE
 624         select ARCH_USES_GETTIMEOFFSET
 625         help
 626           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 627           CD-ROM interface, serial and parallel port, and the floppy drive.
 628
 629 config ARCH_SA1100
 630         bool "SA1100-based"
 631         select CPU_SA1100
 632         select ISA
 633         select ARCH_SPARSEMEM_ENABLE
 634         select ARCH_MTD_XIP
 635         select ARCH_HAS_CPUFREQ
 636         select CPU_FREQ
 637         select GENERIC_CLOCKEVENTS
 638         select HAVE_CLK
 639         select TICK_ONESHOT
 640         select ARCH_REQUIRE_GPIOLIB
 641         help
 642           Support for StrongARM 11x0 based boards.
 643
 644 config ARCH_S3C2410
 645         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 646         select GENERIC_GPIO
 647         select ARCH_HAS_CPUFREQ
 648         select HAVE_CLK
 649         select ARCH_USES_GETTIMEOFFSET
 650         select HAVE_S3C2410_I2C if I2C
 651         help
 652           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 653           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 654           the Samsung SMDK2410 development board (and derivatives).
 655
 656           Note, the S3C2416 and the S3C2450 are so close that they even share
 657           the same SoC ID code. This means that there is no seperate machine
 658           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 659
 660 config ARCH_S3C64XX
 661         bool "Samsung S3C64XX"
 662         select PLAT_SAMSUNG
 663         select CPU_V6
 664         select ARM_VIC
 665         select HAVE_CLK
 666         select NO_IOPORT
 667         select ARCH_USES_GETTIMEOFFSET
 668         select ARCH_HAS_CPUFREQ
 669         select ARCH_REQUIRE_GPIOLIB
 670         select SAMSUNG_CLKSRC
 671         select SAMSUNG_IRQ_VIC_TIMER
 672         select SAMSUNG_IRQ_UART
 673         select S3C_GPIO_TRACK
 674         select S3C_GPIO_PULL_UPDOWN
 675         select S3C_GPIO_CFG_S3C24XX
 676         select S3C_GPIO_CFG_S3C64XX
 677         select S3C_DEV_NAND
 678         select USB_ARCH_HAS_OHCI
 679         select SAMSUNG_GPIOLIB_4BIT
 680         select HAVE_S3C2410_I2C if I2C
 681         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 682         help
 683           Samsung S3C64XX series based systems
 684
 685 config ARCH_S5P64X0
 686         bool "Samsung S5P6440 S5P6450"
 687         select CPU_V6
 688         select GENERIC_GPIO
 689         select HAVE_CLK
 690         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 691         select ARCH_USES_GETTIMEOFFSET
 692         select HAVE_S3C2410_I2C if I2C
 693         select HAVE_S3C_RTC if RTC_CLASS
 694         help
 695           Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
 696           SMDK6450.
 697
 698 config ARCH_S5P6442
 699         bool "Samsung S5P6442"
 700         select CPU_V6
 701         select GENERIC_GPIO
 702         select HAVE_CLK
 703         select ARCH_USES_GETTIMEOFFSET
 704         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 705         help
 706           Samsung S5P6442 CPU based systems
 707
 708 config ARCH_S5PC100
 709         bool "Samsung S5PC100"
 710         select GENERIC_GPIO
 711         select HAVE_CLK
 712         select CPU_V7
 713         select ARM_L1_CACHE_SHIFT_6
 714         select ARCH_USES_GETTIMEOFFSET
 715         select HAVE_S3C2410_I2C if I2C
 716         select HAVE_S3C_RTC if RTC_CLASS
 717         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 718         help
 719           Samsung S5PC100 series based systems
 720
 721 config ARCH_S5PV210
 722         bool "Samsung S5PV210/S5PC110"
 723         select CPU_V7
 724         select ARCH_SPARSEMEM_ENABLE
 725         select GENERIC_GPIO
 726         select HAVE_CLK
 727         select ARM_L1_CACHE_SHIFT_6
 728         select ARCH_HAS_CPUFREQ
 729         select ARCH_USES_GETTIMEOFFSET
 730         select HAVE_S3C2410_I2C if I2C
 731         select HAVE_S3C_RTC if RTC_CLASS
 732         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 733         help
 734           Samsung S5PV210/S5PC110 series based systems
 735
 736 config ARCH_S5PV310
 737         bool "Samsung S5PV310/S5PC210"
 738         select CPU_V7
 739         select ARCH_SPARSEMEM_ENABLE
 740         select GENERIC_GPIO
 741         select HAVE_CLK
 742         select GENERIC_CLOCKEVENTS
 743         select HAVE_S3C_RTC if RTC_CLASS
 744         select HAVE_S3C2410_I2C if I2C
 745         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 746         help
 747           Samsung S5PV310 series based systems
 748
 749 config ARCH_SHARK
 750         bool "Shark"
 751         select CPU_SA110
 752         select ISA
 753         select ISA_DMA
 754         select ZONE_DMA
 755         select PCI
 756         select ARCH_USES_GETTIMEOFFSET
 757         help
 758           Support for the StrongARM based Digital DNARD machine, also known
 759           as "Shark" (<http://www.shark-linux.de/shark.html>).
 760
 761 config ARCH_TCC_926
 762         bool "Telechips TCC ARM926-based systems"
 763         select CPU_ARM926T
 764         select HAVE_CLK
 765         select COMMON_CLKDEV
 766         select GENERIC_CLOCKEVENTS
 767         help
 768           Support for Telechips TCC ARM926-based systems.
 769
 770 config ARCH_LH7A40X
 771         bool "Sharp LH7A40X"
 772         select CPU_ARM922T
 773         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 774         select ARCH_USES_GETTIMEOFFSET
 775         help
 776           Say Y here for systems based on one of the Sharp LH7A40X
 777           System on a Chip processors.  These CPUs include an ARM922T
 778           core with a wide array of integrated devices for
 779           hand-held and low-power applications.
 780
 781 config ARCH_U300
 782         bool "ST-Ericsson U300 Series"
 783         depends on MMU
 784         select CPU_ARM926T
 785         select HAVE_TCM
 786         select ARM_AMBA
 787         select ARM_VIC
 788         select GENERIC_CLOCKEVENTS
 789         select COMMON_CLKDEV
 790         select GENERIC_GPIO
 791         help
 792           Support for ST-Ericsson U300 series mobile platforms.
 793
 794 config ARCH_U8500
 795         bool "ST-Ericsson U8500 Series"
 796         select CPU_V7
 797         select ARM_AMBA
 798         select GENERIC_CLOCKEVENTS
 799         select COMMON_CLKDEV
 800         select ARCH_REQUIRE_GPIOLIB
 801         help
 802           Support for ST-Ericsson's Ux500 architecture
 803
 804 config ARCH_NOMADIK
 805         bool "STMicroelectronics Nomadik"
 806         select ARM_AMBA
 807         select ARM_VIC
 808         select CPU_ARM926T
 809         select COMMON_CLKDEV
 810         select GENERIC_CLOCKEVENTS
 811         select ARCH_REQUIRE_GPIOLIB
 812         help
 813           Support for the Nomadik platform by ST-Ericsson
 814
 815 config ARCH_DAVINCI
 816         bool "TI DaVinci"
 817         select GENERIC_CLOCKEVENTS
 818         select ARCH_REQUIRE_GPIOLIB
 819         select ZONE_DMA
 820         select HAVE_IDE
 821         select COMMON_CLKDEV
 822         select GENERIC_ALLOCATOR
 823         select ARCH_HAS_HOLES_MEMORYMODEL
 824         help
 825           Support for TI's DaVinci platform.
 826
 827 config ARCH_OMAP
 828         bool "TI OMAP"
 829         select HAVE_CLK
 830         select ARCH_REQUIRE_GPIOLIB
 831         select ARCH_HAS_CPUFREQ
 832         select GENERIC_CLOCKEVENTS
 833         select ARCH_HAS_HOLES_MEMORYMODEL
 834         help
 835           Support for TI's OMAP platform (OMAP1/2/3/4).
 836
 837 config PLAT_SPEAR
 838         bool "ST SPEAr"
 839         select ARM_AMBA
 840         select ARCH_REQUIRE_GPIOLIB
 841         select COMMON_CLKDEV
 842         select GENERIC_CLOCKEVENTS
 843         select HAVE_CLK
 844         help
 845           Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
 846
 847 endchoice
 848
 849 #
 850 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 851 # Kconfigs may be included either alphabetically (according to the
 852 # plat- suffix) or along side the corresponding mach-* source.
 853 #
 854 source "arch/arm/mach-aaec2000/Kconfig"
 855
 856 source "arch/arm/mach-at91/Kconfig"
 857
 858 source "arch/arm/mach-bcmring/Kconfig"
 859
 860 source "arch/arm/mach-clps711x/Kconfig"
 861
 862 source "arch/arm/mach-cns3xxx/Kconfig"
 863
 864 source "arch/arm/mach-davinci/Kconfig"
 865
 866 source "arch/arm/mach-dove/Kconfig"
 867
 868 source "arch/arm/mach-ep93xx/Kconfig"
 869
 870 source "arch/arm/mach-footbridge/Kconfig"
 871
 872 source "arch/arm/mach-gemini/Kconfig"
 873
 874 source "arch/arm/mach-h720x/Kconfig"
 875
 876 source "arch/arm/mach-integrator/Kconfig"
 877
 878 source "arch/arm/mach-iop32x/Kconfig"
 879
 880 source "arch/arm/mach-iop33x/Kconfig"
 881
 882 source "arch/arm/mach-iop13xx/Kconfig"
 883
 884 source "arch/arm/mach-ixp4xx/Kconfig"
 885
 886 source "arch/arm/mach-ixp2000/Kconfig"
 887
 888 source "arch/arm/mach-ixp23xx/Kconfig"
 889
 890 source "arch/arm/mach-kirkwood/Kconfig"
 891
 892 source "arch/arm/mach-ks8695/Kconfig"
 893
 894 source "arch/arm/mach-lh7a40x/Kconfig"
 895
 896 source "arch/arm/mach-loki/Kconfig"
 897
 898 source "arch/arm/mach-lpc32xx/Kconfig"
 899
 900 source "arch/arm/mach-msm/Kconfig"
 901
 902 source "arch/arm/mach-mv78xx0/Kconfig"
 903
 904 source "arch/arm/plat-mxc/Kconfig"
 905
 906 source "arch/arm/mach-netx/Kconfig"
 907
 908 source "arch/arm/mach-nomadik/Kconfig"
 909 source "arch/arm/plat-nomadik/Kconfig"
 910
 911 source "arch/arm/mach-ns9xxx/Kconfig"
 912
 913 source "arch/arm/mach-nuc93x/Kconfig"
 914
 915 source "arch/arm/plat-omap/Kconfig"
 916
 917 source "arch/arm/mach-omap1/Kconfig"
 918
 919 source "arch/arm/mach-omap2/Kconfig"
 920
 921 source "arch/arm/mach-orion5x/Kconfig"
 922
 923 source "arch/arm/mach-pxa/Kconfig"
 924 source "arch/arm/plat-pxa/Kconfig"
 925
 926 source "arch/arm/mach-mmp/Kconfig"
 927
 928 source "arch/arm/mach-realview/Kconfig"
 929
 930 source "arch/arm/mach-sa1100/Kconfig"
 931
 932 source "arch/arm/plat-samsung/Kconfig"
 933 source "arch/arm/plat-s3c24xx/Kconfig"
 934 source "arch/arm/plat-s5p/Kconfig"
 935
 936 source "arch/arm/plat-spear/Kconfig"
 937
 938 source "arch/arm/plat-tcc/Kconfig"
 939
 940 if ARCH_S3C2410
 941 source "arch/arm/mach-s3c2400/Kconfig"
 942 source "arch/arm/mach-s3c2410/Kconfig"
 943 source "arch/arm/mach-s3c2412/Kconfig"
 944 source "arch/arm/mach-s3c2416/Kconfig"
 945 source "arch/arm/mach-s3c2440/Kconfig"
 946 source "arch/arm/mach-s3c2443/Kconfig"
 947 endif
 948
 949 if ARCH_S3C64XX
 950 source "arch/arm/mach-s3c64xx/Kconfig"
 951 endif
 952
 953 source "arch/arm/mach-s5p64x0/Kconfig"
 954
 955 source "arch/arm/mach-s5p6442/Kconfig"
 956
 957 source "arch/arm/mach-s5pc100/Kconfig"
 958
 959 source "arch/arm/mach-s5pv210/Kconfig"
 960
 961 source "arch/arm/mach-s5pv310/Kconfig"
 962
 963 source "arch/arm/mach-shmobile/Kconfig"
 964
 965 source "arch/arm/plat-stmp3xxx/Kconfig"
 966
 967 source "arch/arm/mach-tegra/Kconfig"
 968
 969 source "arch/arm/mach-u300/Kconfig"
 970
 971 source "arch/arm/mach-ux500/Kconfig"
 972
 973 source "arch/arm/mach-versatile/Kconfig"
 974
 975 source "arch/arm/mach-vexpress/Kconfig"
 976
 977 source "arch/arm/mach-w90x900/Kconfig"
 978
 979 # Definitions to make life easier
 980 config ARCH_ACORN
 981         bool
 982
 983 config PLAT_IOP
 984         bool
 985         select GENERIC_CLOCKEVENTS
 986
 987 config PLAT_ORION
 988         bool
 989
 990 config PLAT_PXA
 991         bool
 992
 993 config PLAT_VERSATILE
 994         bool
 995
 996 config ARM_TIMER_SP804
 997         bool
 998
 999 source arch/arm/mm/Kconfig
1000
1001 config IWMMXT
1002         bool "Enable iWMMXt support"
1003         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
1004         default y if PXA27x || PXA3xx || ARCH_MMP
1005         help
1006           Enable support for iWMMXt context switching at run time if
1007           running on a CPU that supports it.
1008
1009 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1010 config XSCALE_PMU
1011         bool
1012         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1013         default y
1014
1015 config CPU_HAS_PMU
1016         depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
1017                    (!ARCH_OMAP3 || OMAP3_EMU)
1018         default y
1019         bool
1020
1021 if !MMU
1022 source "arch/arm/Kconfig-nommu"
1023 endif
1024
1025 config ARM_ERRATA_411920
1026         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1027         depends on CPU_V6
1028         help
1029           Invalidation of the Instruction Cache operation can
1030           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1031           It does not affect the MPCore. This option enables the ARM Ltd.
1032           recommended workaround.
1033
1034 config ARM_ERRATA_430973
1035         bool "ARM errata: Stale prediction on replaced interworking branch"
1036         depends on CPU_V7
1037         help
1038           This option enables the workaround for the 430973 Cortex-A8
1039           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1040           interworking branch is replaced with another code sequence at the
1041           same virtual address, whether due to self-modifying code or virtual
1042           to physical address re-mapping, Cortex-A8 does not recover from the
1043           stale interworking branch prediction. This results in Cortex-A8
1044           executing the new code sequence in the incorrect ARM or Thumb state.
1045           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1046           and also flushes the branch target cache at every context switch.
1047           Note that setting specific bits in the ACTLR register may not be
1048           available in non-secure mode.
1049
1050 config ARM_ERRATA_458693
1051         bool "ARM errata: Processor deadlock when a false hazard is created"
1052         depends on CPU_V7
1053         help
1054           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1055           erratum. For very specific sequences of memory operations, it is
1056           possible for a hazard condition intended for a cache line to instead
1057           be incorrectly associated with a different cache line. This false
1058           hazard might then cause a processor deadlock. The workaround enables
1059           the L1 caching of the NEON accesses and disables the PLD instruction
1060           in the ACTLR register. Note that setting specific bits in the ACTLR
1061           register may not be available in non-secure mode.
1062
1063 config ARM_ERRATA_460075
1064         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1065         depends on CPU_V7
1066         help
1067           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1068           erratum. Any asynchronous access to the L2 cache may encounter a
1069           situation in which recent store transactions to the L2 cache are lost
1070           and overwritten with stale memory contents from external memory. The
1071           workaround disables the write-allocate mode for the L2 cache via the
1072           ACTLR register. Note that setting specific bits in the ACTLR register
1073           may not be available in non-secure mode.
1074
1075 config ARM_ERRATA_742230
1076         bool "ARM errata: DMB operation may be faulty"
1077         depends on CPU_V7 && SMP
1078         help
1079           This option enables the workaround for the 742230 Cortex-A9
1080           (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1081           between two write operations may not ensure the correct visibility
1082           ordering of the two writes. This workaround sets a specific bit in
1083           the diagnostic register of the Cortex-A9 which causes the DMB
1084           instruction to behave as a DSB, ensuring the correct behaviour of
1085           the two writes.
1086
1087 config ARM_ERRATA_742231
1088         bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1089         depends on CPU_V7 && SMP
1090         help
1091           This option enables the workaround for the 742231 Cortex-A9
1092           (r2p0..r2p2) erratum. Under certain conditions, specific to the
1093           Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1094           accessing some data located in the same cache line, may get corrupted
1095           data due to bad handling of the address hazard when the line gets
1096           replaced from one of the CPUs at the same time as another CPU is
1097           accessing it. This workaround sets specific bits in the diagnostic
1098           register of the Cortex-A9 which reduces the linefill issuing
1099           capabilities of the processor.
1100
1101 config PL310_ERRATA_588369
1102         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1103         depends on CACHE_L2X0 && ARCH_OMAP4
1104         help
1105            The PL310 L2 cache controller implements three types of Clean &
1106            Invalidate maintenance operations: by Physical Address
1107            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1108            They are architecturally defined to behave as the execution of a
1109            clean operation followed immediately by an invalidate operation,
1110            both performing to the same memory location. This functionality
1111            is not correctly implemented in PL310 as clean lines are not
1112            invalidated as a result of these operations. Note that this errata
1113            uses Texas Instrument's secure monitor api.
1114
1115 config ARM_ERRATA_720789
1116         bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1117         depends on CPU_V7 && SMP
1118         help
1119           This option enables the workaround for the 720789 Cortex-A9 (prior to
1120           r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1121           broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1122           As a consequence of this erratum, some TLB entries which should be
1123           invalidated are not, resulting in an incoherency in the system page
1124           tables. The workaround changes the TLB flushing routines to invalidate
1125           entries regardless of the ASID.
1126
1127 config ARM_ERRATA_743622
1128         bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1129         depends on CPU_V7
1130         help
1131           This option enables the workaround for the 743622 Cortex-A9
1132           (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1133           optimisation in the Cortex-A9 Store Buffer may lead to data
1134           corruption. This workaround sets a specific bit in the diagnostic
1135           register of the Cortex-A9 which disables the Store Buffer
1136           optimisation, preventing the defect from occurring. This has no
1137           visible impact on the overall performance or power consumption of the
1138           processor.
1139
1140 endmenu
1141
1142 source "arch/arm/common/Kconfig"
1143
1144 menu "Bus support"
1145
1146 config ARM_AMBA
1147         bool
1148
1149 config ISA
1150         bool
1151         help
1152           Find out whether you have ISA slots on your motherboard.  ISA is the
1153           name of a bus system, i.e. the way the CPU talks to the other stuff
1154           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1155           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1156           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1157
1158 # Select ISA DMA controller support
1159 config ISA_DMA
1160         bool
1161         select ISA_DMA_API
1162
1163 # Select ISA DMA interface
1164 config ISA_DMA_API
1165         bool
1166
1167 config PCI
1168         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1169         help
1170           Find out whether you have a PCI motherboard. PCI is the name of a
1171           bus system, i.e. the way the CPU talks to the other stuff inside
1172           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1173           VESA. If you have PCI, say Y, otherwise N.
1174
1175 config PCI_DOMAINS
1176         bool
1177         depends on PCI
1178
1179 config PCI_SYSCALL
1180         def_bool PCI
1181
1182 # Select the host bridge type
1183 config PCI_HOST_VIA82C505
1184         bool
1185         depends on PCI && ARCH_SHARK
1186         default y
1187
1188 config PCI_HOST_ITE8152
1189         bool
1190         depends on PCI && MACH_ARMCORE
1191         default y
1192         select DMABOUNCE
1193
1194 source "drivers/pci/Kconfig"
1195
1196 source "drivers/pcmcia/Kconfig"
1197
1198 endmenu
1199
1200 menu "Kernel Features"
1201
1202 source "kernel/time/Kconfig"
1203
1204 config SMP
1205         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1206         depends on EXPERIMENTAL
1207         depends on GENERIC_CLOCKEVENTS
1208         depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1209                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1210                  ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1211                  ARCH_MSM_SCORPIONMP
1212         select USE_GENERIC_SMP_HELPERS
1213         select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1214         help
1215           This enables support for systems with more than one CPU. If you have
1216           a system with only one CPU, like most personal computers, say N. If
1217           you have a system with more than one CPU, say Y.
1218
1219           If you say N here, the kernel will run on single and multiprocessor
1220           machines, but will use only one CPU of a multiprocessor machine. If
1221           you say Y here, the kernel will run on many, but not all, single
1222           processor machines. On a single processor machine, the kernel will
1223           run faster if you say N here.
1224
1225           See also <file:Documentation/i386/IO-APIC.txt>,
1226           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1227           <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1228
1229           If you don't know what to do here, say N.
1230
1231 config SMP_ON_UP
1232         bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1233         depends on EXPERIMENTAL
1234         depends on SMP && !XIP && !THUMB2_KERNEL
1235         default y
1236         help
1237           SMP kernels contain instructions which fail on non-SMP processors.
1238           Enabling this option allows the kernel to modify itself to make
1239           these instructions safe.  Disabling it allows about 1K of space
1240           savings.
1241
1242           If you don't know what to do here, say Y.
1243
1244 config HAVE_ARM_SCU
1245         bool
1246         depends on SMP
1247         help
1248           This option enables support for the ARM system coherency unit
1249
1250 config HAVE_ARM_TWD
1251         bool
1252         depends on SMP
1253         help
1254           This options enables support for the ARM timer and watchdog unit
1255
1256 choice
1257         prompt "Memory split"
1258         default VMSPLIT_3G
1259         help
1260           Select the desired split between kernel and user memory.
1261
1262           If you are not absolutely sure what you are doing, leave this
1263           option alone!
1264
1265         config VMSPLIT_3G
1266                 bool "3G/1G user/kernel split"
1267         config VMSPLIT_2G
1268                 bool "2G/2G user/kernel split"
1269         config VMSPLIT_1G
1270                 bool "1G/3G user/kernel split"
1271 endchoice
1272
1273 config PAGE_OFFSET
1274         hex
1275         default 0x40000000 if VMSPLIT_1G
1276         default 0x80000000 if VMSPLIT_2G
1277         default 0xC0000000
1278
1279 config NR_CPUS
1280         int "Maximum number of CPUs (2-32)"
1281         range 2 32
1282         depends on SMP
1283         default "4"
1284
1285 config HOTPLUG_CPU
1286         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1287         depends on SMP && HOTPLUG && EXPERIMENTAL
1288         depends on !ARCH_MSM
1289         help
1290           Say Y here to experiment with turning CPUs off and on.  CPUs
1291           can be controlled through /sys/devices/system/cpu.
1292
1293 config LOCAL_TIMERS
1294         bool "Use local timer interrupts"
1295         depends on SMP
1296         default y
1297         select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
1298         help
1299           Enable support for local timers on SMP platforms, rather then the
1300           legacy IPI broadcast method.  Local timers allows the system
1301           accounting to be spread across the timer interval, preventing a
1302           "thundering herd" at every timer tick.
1303
1304 source kernel/Kconfig.preempt
1305
1306 config HZ
1307         int
1308         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
1309                 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
1310         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1311         default AT91_TIMER_HZ if ARCH_AT91
1312         default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1313         default 100
1314
1315 config THUMB2_KERNEL
1316         bool "Compile the kernel in Thumb-2 mode"
1317         depends on CPU_V7 && EXPERIMENTAL
1318         select AEABI
1319         select ARM_ASM_UNIFIED
1320         help
1321           By enabling this option, the kernel will be compiled in
1322           Thumb-2 mode. A compiler/assembler that understand the unified
1323           ARM-Thumb syntax is needed.
1324
1325           If unsure, say N.
1326
1327 config ARM_ASM_UNIFIED
1328         bool
1329
1330 config AEABI
1331         bool "Use the ARM EABI to compile the kernel"
1332         help
1333           This option allows for the kernel to be compiled using the latest
1334           ARM ABI (aka EABI).  This is only useful if you are using a user
1335           space environment that is also compiled with EABI.
1336
1337           Since there are major incompatibilities between the legacy ABI and
1338           EABI, especially with regard to structure member alignment, this
1339           option also changes the kernel syscall calling convention to
1340           disambiguate both ABIs and allow for backward compatibility support
1341           (selected with CONFIG_OABI_COMPAT).
1342
1343           To use this you need GCC version 4.0.0 or later.
1344
1345 config OABI_COMPAT
1346         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1347         depends on AEABI && EXPERIMENTAL
1348         default y
1349         help
1350           This option preserves the old syscall interface along with the
1351           new (ARM EABI) one. It also provides a compatibility layer to
1352           intercept syscalls that have structure arguments which layout
1353           in memory differs between the legacy ABI and the new ARM EABI
1354           (only for non "thumb" binaries). This option adds a tiny
1355           overhead to all syscalls and produces a slightly larger kernel.
1356           If you know you'll be using only pure EABI user space then you
1357           can say N here. If this option is not selected and you attempt
1358           to execute a legacy ABI binary then the result will be
1359           UNPREDICTABLE (in fact it can be predicted that it won't work
1360           at all). If in doubt say Y.
1361
1362 config ARCH_HAS_HOLES_MEMORYMODEL
1363         bool
1364
1365 config ARCH_SPARSEMEM_ENABLE
1366         bool
1367
1368 config ARCH_SPARSEMEM_DEFAULT
1369         def_bool ARCH_SPARSEMEM_ENABLE
1370
1371 config ARCH_SELECT_MEMORY_MODEL
1372         def_bool ARCH_SPARSEMEM_ENABLE
1373
1374 config HIGHMEM
1375         bool "High Memory Support (EXPERIMENTAL)"
1376         depends on MMU && EXPERIMENTAL
1377         help
1378           The address space of ARM processors is only 4 Gigabytes large
1379           and it has to accommodate user address space, kernel address
1380           space as well as some memory mapped IO. That means that, if you
1381           have a large amount of physical memory and/or IO, not all of the
1382           memory can be "permanently mapped" by the kernel. The physical
1383           memory that is not permanently mapped is called "high memory".
1384
1385           Depending on the selected kernel/user memory split, minimum
1386           vmalloc space and actual amount of RAM, you may not need this
1387           option which should result in a slightly faster kernel.
1388
1389           If unsure, say n.
1390
1391 config HIGHPTE
1392         bool "Allocate 2nd-level pagetables from highmem"
1393         depends on HIGHMEM
1394         depends on !OUTER_CACHE
1395
1396 config HW_PERF_EVENTS
1397         bool "Enable hardware performance counter support for perf events"
1398         depends on PERF_EVENTS && CPU_HAS_PMU
1399         default y
1400         help
1401           Enable hardware performance counter support for perf events. If
1402           disabled, perf events will use software events only.
1403
1404 config SPARSE_IRQ
1405         def_bool n
1406         help
1407           This enables support for sparse irqs. This is useful in general
1408           as most CPUs have a fairly sparse array of IRQ vectors, which
1409           the irq_desc then maps directly on to. Systems with a high
1410           number of off-chip IRQs will want to treat this as
1411           experimental until they have been independently verified.
1412
1413 source "mm/Kconfig"
1414
1415 config FORCE_MAX_ZONEORDER
1416         int "Maximum zone order" if ARCH_SHMOBILE
1417         range 11 64 if ARCH_SHMOBILE
1418         default "9" if SA1111
1419         default "11"
1420         help
1421           The kernel memory allocator divides physically contiguous memory
1422           blocks into "zones", where each zone is a power of two number of
1423           pages.  This option selects the largest power of two that the kernel
1424           keeps in the memory allocator.  If you need to allocate very large
1425           blocks of physically contiguous memory, then you may need to
1426           increase this value.
1427
1428           This config option is actually maximum order plus one. For example,
1429           a value of 11 means that the largest free memory block is 2^10 pages.
1430
1431 config LEDS
1432         bool "Timer and CPU usage LEDs"
1433         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1434                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1435                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1436                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1437                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1438                    ARCH_AT91 || ARCH_DAVINCI || \
1439                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1440         help
1441           If you say Y here, the LEDs on your machine will be used
1442           to provide useful information about your current system status.
1443
1444           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1445           be able to select which LEDs are active using the options below. If
1446           you are compiling a kernel for the EBSA-110 or the LART however, the
1447           red LED will simply flash regularly to indicate that the system is
1448           still functional. It is safe to say Y here if you have a CATS
1449           system, but the driver will do nothing.
1450
1451 config LEDS_TIMER
1452         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1453                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1454                             || MACH_OMAP_PERSEUS2
1455         depends on LEDS
1456         depends on !GENERIC_CLOCKEVENTS
1457         default y if ARCH_EBSA110
1458         help
1459           If you say Y here, one of the system LEDs (the green one on the
1460           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1461           will flash regularly to indicate that the system is still
1462           operational. This is mainly useful to kernel hackers who are
1463           debugging unstable kernels.
1464
1465           The LART uses the same LED for both Timer LED and CPU usage LED
1466           functions. You may choose to use both, but the Timer LED function
1467           will overrule the CPU usage LED.
1468
1469 config LEDS_CPU
1470         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1471                         !ARCH_OMAP) \
1472                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1473                         || MACH_OMAP_PERSEUS2
1474         depends on LEDS
1475         help
1476           If you say Y here, the red LED will be used to give a good real
1477           time indication of CPU usage, by lighting whenever the idle task
1478           is not currently executing.
1479
1480           The LART uses the same LED for both Timer LED and CPU usage LED
1481           functions. You may choose to use both, but the Timer LED function
1482           will overrule the CPU usage LED.
1483
1484 config ALIGNMENT_TRAP
1485         bool
1486         depends on CPU_CP15_MMU
1487         default y if !ARCH_EBSA110
1488         select HAVE_PROC_CPU if PROC_FS
1489         help
1490           ARM processors cannot fetch/store information which is not
1491           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1492           address divisible by 4. On 32-bit ARM processors, these non-aligned
1493           fetch/store instructions will be emulated in software if you say
1494           here, which has a severe performance impact. This is necessary for
1495           correct operation of some network protocols. With an IP-only
1496           configuration it is safe to say N, otherwise say Y.
1497
1498 config UACCESS_WITH_MEMCPY
1499         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1500         depends on MMU && EXPERIMENTAL
1501         default y if CPU_FEROCEON
1502         help
1503           Implement faster copy_to_user and clear_user methods for CPU
1504           cores where a 8-word STM instruction give significantly higher
1505           memory write throughput than a sequence of individual 32bit stores.
1506
1507           A possible side effect is a slight increase in scheduling latency
1508           between threads sharing the same address space if they invoke
1509           such copy operations with large buffers.
1510
1511           However, if the CPU data cache is using a write-allocate mode,
1512           this option is unlikely to provide any performance gain.
1513
1514 config SECCOMP
1515         bool
1516         prompt "Enable seccomp to safely compute untrusted bytecode"
1517         ---help---
1518           This kernel feature is useful for number crunching applications
1519           that may need to compute untrusted bytecode during their
1520           execution. By using pipes or other transports made available to
1521           the process as file descriptors supporting the read/write
1522           syscalls, it's possible to isolate those applications in
1523           their own address space using seccomp. Once seccomp is
1524           enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1525           and the task is only allowed to execute a few safe syscalls
1526           defined by each seccomp mode.
1527
1528 config CC_STACKPROTECTOR
1529         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1530         help
1531           This option turns on the -fstack-protector GCC feature. This
1532           feature puts, at the beginning of functions, a canary value on
1533           the stack just before the return address, and validates
1534           the value just before actually returning.  Stack based buffer
1535           overflows (that need to overwrite this return address) now also
1536           overwrite the canary, which gets detected and the attack is then
1537           neutralized via a kernel panic.
1538           This feature requires gcc version 4.2 or above.
1539
1540 config DEPRECATED_PARAM_STRUCT
1541         bool "Provide old way to pass kernel parameters"
1542         help
1543           This was deprecated in 2001 and announced to live on for 5 years.
1544           Some old boot loaders still use this way.
1545
1546 endmenu
1547
1548 menu "Boot options"
1549
1550 # Compressed boot loader in ROM.  Yes, we really want to ask about
1551 # TEXT and BSS so we preserve their values in the config files.
1552 config ZBOOT_ROM_TEXT
1553         hex "Compressed ROM boot loader base address"
1554         default "0"
1555         help
1556           The physical address at which the ROM-able zImage is to be
1557           placed in the target.  Platforms which normally make use of
1558           ROM-able zImage formats normally set this to a suitable
1559           value in their defconfig file.
1560
1561           If ZBOOT_ROM is not enabled, this has no effect.
1562
1563 config ZBOOT_ROM_BSS
1564         hex "Compressed ROM boot loader BSS address"
1565         default "0"
1566         help
1567           The base address of an area of read/write memory in the target
1568           for the ROM-able zImage which must be available while the
1569           decompressor is running. It must be large enough to hold the
1570           entire decompressed kernel plus an additional 128 KiB.
1571           Platforms which normally make use of ROM-able zImage formats
1572           normally set this to a suitable value in their defconfig file.
1573
1574           If ZBOOT_ROM is not enabled, this has no effect.
1575
1576 config ZBOOT_ROM
1577         bool "Compressed boot loader in ROM/flash"
1578         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1579         help
1580           Say Y here if you intend to execute your compressed kernel image
1581           (zImage) directly from ROM or flash.  If unsure, say N.
1582
1583 config CMDLINE
1584         string "Default kernel command string"
1585         default ""
1586         help
1587           On some architectures (EBSA110 and CATS), there is currently no way
1588           for the boot loader to pass arguments to the kernel. For these
1589           architectures, you should supply some command-line options at build
1590           time by entering them here. As a minimum, you should specify the
1591           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1592
1593 config CMDLINE_FORCE
1594         bool "Always use the default kernel command string"
1595         depends on CMDLINE != ""
1596         help
1597           Always use the default kernel command string, even if the boot
1598           loader passes other arguments to the kernel.
1599           This is useful if you cannot or don't want to change the
1600           command-line options your boot loader passes to the kernel.
1601
1602           If unsure, say N.
1603
1604 config XIP_KERNEL
1605         bool "Kernel Execute-In-Place from ROM"
1606         depends on !ZBOOT_ROM
1607         help
1608           Execute-In-Place allows the kernel to run from non-volatile storage
1609           directly addressable by the CPU, such as NOR flash. This saves RAM
1610           space since the text section of the kernel is not loaded from flash
1611           to RAM.  Read-write sections, such as the data section and stack,
1612           are still copied to RAM.  The XIP kernel is not compressed since
1613           it has to run directly from flash, so it will take more space to
1614           store it.  The flash address used to link the kernel object files,
1615           and for storing it, is configuration dependent. Therefore, if you
1616           say Y here, you must know the proper physical address where to
1617           store the kernel image depending on your own flash memory usage.
1618
1619           Also note that the make target becomes "make xipImage" rather than
1620           "make zImage" or "make Image".  The final kernel binary to put in
1621           ROM memory will be arch/arm/boot/xipImage.
1622
1623           If unsure, say N.
1624
1625 config XIP_PHYS_ADDR
1626         hex "XIP Kernel Physical Location"
1627         depends on XIP_KERNEL
1628         default "0x00080000"
1629         help
1630           This is the physical address in your flash memory the kernel will
1631           be linked for and stored to.  This address is dependent on your
1632           own flash usage.
1633
1634 config KEXEC
1635         bool "Kexec system call (EXPERIMENTAL)"
1636         depends on EXPERIMENTAL
1637         help
1638           kexec is a system call that implements the ability to shutdown your
1639           current kernel, and to start another kernel.  It is like a reboot
1640           but it is independent of the system firmware.   And like a reboot
1641           you can start any kernel with it, not just Linux.
1642
1643           It is an ongoing process to be certain the hardware in a machine
1644           is properly shutdown, so do not be surprised if this code does not
1645           initially work for you.  It may help to enable device hotplugging
1646           support.
1647
1648 config ATAGS_PROC
1649         bool "Export atags in procfs"
1650         depends on KEXEC
1651         default y
1652         help
1653           Should the atags used to boot the kernel be exported in an "atags"
1654           file in procfs. Useful with kexec.
1655
1656 config AUTO_ZRELADDR
1657         bool "Auto calculation of the decompressed kernel image address"
1658         depends on !ZBOOT_ROM && !ARCH_U300
1659         help
1660           ZRELADDR is the physical address where the decompressed kernel
1661           image will be placed. If AUTO_ZRELADDR is selected, the address
1662           will be determined at run-time by masking the current IP with
1663           0xf8000000. This assumes the zImage being placed in the first 128MB
1664           from start of memory.
1665
1666 endmenu
1667
1668 menu "CPU Power Management"
1669
1670 if ARCH_HAS_CPUFREQ
1671
1672 source "drivers/cpufreq/Kconfig"
1673
1674 config CPU_FREQ_IMX
1675         tristate "CPUfreq driver for i.MX CPUs"
1676         depends on ARCH_MXC && CPU_FREQ
1677         help
1678           This enables the CPUfreq driver for i.MX CPUs.
1679
1680 config CPU_FREQ_SA1100
1681         bool
1682
1683 config CPU_FREQ_SA1110
1684         bool
1685
1686 config CPU_FREQ_INTEGRATOR
1687         tristate "CPUfreq driver for ARM Integrator CPUs"
1688         depends on ARCH_INTEGRATOR && CPU_FREQ
1689         default y
1690         help
1691           This enables the CPUfreq driver for ARM Integrator CPUs.
1692
1693           For details, take a look at <file:Documentation/cpu-freq>.
1694
1695           If in doubt, say Y.
1696
1697 config CPU_FREQ_PXA
1698         bool
1699         depends on CPU_FREQ && ARCH_PXA && PXA25x
1700         default y
1701         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1702
1703 config CPU_FREQ_S3C64XX
1704         bool "CPUfreq support for Samsung S3C64XX CPUs"
1705         depends on CPU_FREQ && CPU_S3C6410
1706
1707 config CPU_FREQ_S3C
1708         bool
1709         help
1710           Internal configuration node for common cpufreq on Samsung SoC
1711
1712 config CPU_FREQ_S3C24XX
1713         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1714         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1715         select CPU_FREQ_S3C
1716         help
1717           This enables the CPUfreq driver for the Samsung S3C24XX family
1718           of CPUs.
1719
1720           For details, take a look at <file:Documentation/cpu-freq>.
1721
1722           If in doubt, say N.
1723
1724 config CPU_FREQ_S3C24XX_PLL
1725         bool "Support CPUfreq changing of PLL frequency"
1726         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1727         help
1728           Compile in support for changing the PLL frequency from the
1729           S3C24XX series CPUfreq driver. The PLL takes time to settle
1730           after a frequency change, so by default it is not enabled.
1731
1732           This also means that the PLL tables for the selected CPU(s) will
1733           be built which may increase the size of the kernel image.
1734
1735 config CPU_FREQ_S3C24XX_DEBUG
1736         bool "Debug CPUfreq Samsung driver core"
1737         depends on CPU_FREQ_S3C24XX
1738         help
1739           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1740
1741 config CPU_FREQ_S3C24XX_IODEBUG
1742         bool "Debug CPUfreq Samsung driver IO timing"
1743         depends on CPU_FREQ_S3C24XX
1744         help
1745           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1746
1747 config CPU_FREQ_S3C24XX_DEBUGFS
1748         bool "Export debugfs for CPUFreq"
1749         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1750         help
1751           Export status information via debugfs.
1752
1753 endif
1754
1755 source "drivers/cpuidle/Kconfig"
1756
1757 endmenu
1758
1759 menu "Floating point emulation"
1760
1761 comment "At least one emulation must be selected"
1762
1763 config FPE_NWFPE
1764         bool "NWFPE math emulation"
1765         depends on !AEABI || OABI_COMPAT
1766         ---help---
1767           Say Y to include the NWFPE floating point emulator in the kernel.
1768           This is necessary to run most binaries. Linux does not currently
1769           support floating point hardware so you need to say Y here even if
1770           your machine has an FPA or floating point co-processor podule.
1771
1772           You may say N here if you are going to load the Acorn FPEmulator
1773           early in the bootup.
1774
1775 config FPE_NWFPE_XP
1776         bool "Support extended precision"
1777         depends on FPE_NWFPE
1778         help
1779           Say Y to include 80-bit support in the kernel floating-point
1780           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1781           Note that gcc does not generate 80-bit operations by default,
1782           so in most cases this option only enlarges the size of the
1783           floating point emulator without any good reason.
1784
1785           You almost surely want to say N here.
1786
1787 config FPE_FASTFPE
1788         bool "FastFPE math emulation (EXPERIMENTAL)"
1789         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1790         ---help---
1791           Say Y here to include the FAST floating point emulator in the kernel.
1792           This is an experimental much faster emulator which now also has full
1793           precision for the mantissa.  It does not support any exceptions.
1794           It is very simple, and approximately 3-6 times faster than NWFPE.
1795
1796           It should be sufficient for most programs.  It may be not suitable
1797           for scientific calculations, but you have to check this for yourself.
1798           If you do not feel you need a faster FP emulation you should better
1799           choose NWFPE.
1800
1801 config VFP
1802         bool "VFP-format floating point maths"
1803         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1804         help
1805           Say Y to include VFP support code in the kernel. This is needed
1806           if your hardware includes a VFP unit.
1807
1808           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1809           release notes and additional status information.
1810
1811           Say N if your target does not have VFP hardware.
1812
1813 config VFPv3
1814         bool
1815         depends on VFP
1816         default y if CPU_V7
1817
1818 config NEON
1819         bool "Advanced SIMD (NEON) Extension support"
1820         depends on VFPv3 && CPU_V7
1821         help
1822           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1823           Extension.
1824
1825 endmenu
1826
1827 menu "Userspace binary formats"
1828
1829 source "fs/Kconfig.binfmt"
1830
1831 config ARTHUR
1832         tristate "RISC OS personality"
1833         depends on !AEABI
1834         help
1835           Say Y here to include the kernel code necessary if you want to run
1836           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1837           experimental; if this sounds frightening, say N and sleep in peace.
1838           You can also say M here to compile this support as a module (which
1839           will be called arthur).
1840
1841 endmenu
1842
1843 menu "Power management options"
1844
1845 source "kernel/power/Kconfig"
1846
1847 config ARCH_SUSPEND_POSSIBLE
1848         def_bool y
1849
1850 endmenu
1851
1852 source "net/Kconfig"
1853
1854 source "drivers/Kconfig"
1855
1856 source "fs/Kconfig"
1857
1858 source "arch/arm/Kconfig.debug"
1859
1860 source "security/Kconfig"
1861
1862 source "crypto/Kconfig"
1863
1864 source "lib/Kconfig"