arch/arm/Kconfig

   1 config ARM
   2         bool
   3         default y
   4         select HAVE_AOUT
   5         select HAVE_DMA_API_DEBUG
   6         select HAVE_IDE
   7         select HAVE_MEMBLOCK
   8         select RTC_LIB
   9         select SYS_SUPPORTS_APM_EMULATION
  10         select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
  11         select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  12         select HAVE_ARCH_KGDB
  13         select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
  14         select HAVE_KRETPROBES if (HAVE_KPROBES)
  15         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  16         select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  17         select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  18         select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  19         select HAVE_GENERIC_DMA_COHERENT
  20         select HAVE_KERNEL_GZIP
  21         select HAVE_KERNEL_LZO
  22         select HAVE_KERNEL_LZMA
  23         select HAVE_IRQ_WORK
  24         select HAVE_PERF_EVENTS
  25         select PERF_USE_VMALLOC
  26         select HAVE_REGS_AND_STACK_ACCESS_API
  27         select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
  28         select HAVE_C_RECORDMCOUNT
  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 MIGHT_HAVE_PCI
  41         bool
  42
  43 config SYS_SUPPORTS_APM_EMULATION
  44         bool
  45
  46 config HAVE_SCHED_CLOCK
  47         bool
  48
  49 config GENERIC_GPIO
  50         bool
  51
  52 config ARCH_USES_GETTIMEOFFSET
  53         bool
  54         default n
  55
  56 config GENERIC_CLOCKEVENTS
  57         bool
  58
  59 config GENERIC_CLOCKEVENTS_BROADCAST
  60         bool
  61         depends on GENERIC_CLOCKEVENTS
  62         default y if SMP
  63
  64 config HAVE_TCM
  65         bool
  66         select GENERIC_ALLOCATOR
  67
  68 config HAVE_PROC_CPU
  69         bool
  70
  71 config NO_IOPORT
  72         bool
  73
  74 config EISA
  75         bool
  76         ---help---
  77           The Extended Industry Standard Architecture (EISA) bus was
  78           developed as an open alternative to the IBM MicroChannel bus.
  79
  80           The EISA bus provided some of the features of the IBM MicroChannel
  81           bus while maintaining backward compatibility with cards made for
  82           the older ISA bus.  The EISA bus saw limited use between 1988 and
  83           1995 when it was made obsolete by the PCI bus.
  84
  85           Say Y here if you are building a kernel for an EISA-based machine.
  86
  87           Otherwise, say N.
  88
  89 config SBUS
  90         bool
  91
  92 config MCA
  93         bool
  94         help
  95           MicroChannel Architecture is found in some IBM PS/2 machines and
  96           laptops.  It is a bus system similar to PCI or ISA. See
  97           <file:Documentation/mca.txt> (and especially the web page given
  98           there) before attempting to build an MCA bus kernel.
  99
 100 config GENERIC_HARDIRQS
 101         bool
 102         default y
 103
 104 config STACKTRACE_SUPPORT
 105         bool
 106         default y
 107
 108 config HAVE_LATENCYTOP_SUPPORT
 109         bool
 110         depends on !SMP
 111         default y
 112
 113 config LOCKDEP_SUPPORT
 114         bool
 115         default y
 116
 117 config TRACE_IRQFLAGS_SUPPORT
 118         bool
 119         default y
 120
 121 config HARDIRQS_SW_RESEND
 122         bool
 123         default y
 124
 125 config GENERIC_IRQ_PROBE
 126         bool
 127         default y
 128
 129 config GENERIC_LOCKBREAK
 130         bool
 131         default y
 132         depends on SMP && PREEMPT
 133
 134 config RWSEM_GENERIC_SPINLOCK
 135         bool
 136         default y
 137
 138 config RWSEM_XCHGADD_ALGORITHM
 139         bool
 140
 141 config ARCH_HAS_ILOG2_U32
 142         bool
 143
 144 config ARCH_HAS_ILOG2_U64
 145         bool
 146
 147 config ARCH_HAS_CPUFREQ
 148         bool
 149         help
 150           Internal node to signify that the ARCH has CPUFREQ support
 151           and that the relevant menu configurations are displayed for
 152           it.
 153
 154 config ARCH_HAS_CPU_IDLE_WAIT
 155        def_bool y
 156
 157 config GENERIC_HWEIGHT
 158         bool
 159         default y
 160
 161 config GENERIC_CALIBRATE_DELAY
 162         bool
 163         default y
 164
 165 config ARCH_MAY_HAVE_PC_FDC
 166         bool
 167
 168 config ZONE_DMA
 169         bool
 170
 171 config NEED_DMA_MAP_STATE
 172        def_bool y
 173
 174 config GENERIC_ISA_DMA
 175         bool
 176
 177 config FIQ
 178         bool
 179
 180 config ARCH_MTD_XIP
 181         bool
 182
 183 config GENERIC_HARDIRQS_NO__DO_IRQ
 184         def_bool y
 185
 186 config ARM_L1_CACHE_SHIFT_6
 187         bool
 188         help
 189           Setting ARM L1 cache line size to 64 Bytes.
 190
 191 config VECTORS_BASE
 192         hex
 193         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 194         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 195         default 0x00000000
 196         help
 197           The base address of exception vectors.
 198
 199 source "init/Kconfig"
 200
 201 source "kernel/Kconfig.freezer"
 202
 203 menu "System Type"
 204
 205 config MMU
 206         bool "MMU-based Paged Memory Management Support"
 207         default y
 208         help
 209           Select if you want MMU-based virtualised addressing space
 210           support by paged memory management. If unsure, say 'Y'.
 211
 212 #
 213 # The "ARM system type" choice list is ordered alphabetically by option
 214 # text.  Please add new entries in the option alphabetic order.
 215 #
 216 choice
 217         prompt "ARM system type"
 218         default ARCH_VERSATILE
 219
 220 config ARCH_AAEC2000
 221         bool "Agilent AAEC-2000 based"
 222         select CPU_ARM920T
 223         select ARM_AMBA
 224         select HAVE_CLK
 225         select ARCH_USES_GETTIMEOFFSET
 226         help
 227           This enables support for systems based on the Agilent AAEC-2000
 228
 229 config ARCH_INTEGRATOR
 230         bool "ARM Ltd. Integrator family"
 231         select ARM_AMBA
 232         select ARCH_HAS_CPUFREQ
 233         select CLKDEV_LOOKUP
 234         select ICST
 235         select GENERIC_CLOCKEVENTS
 236         select PLAT_VERSATILE
 237         help
 238           Support for ARM's Integrator platform.
 239
 240 config ARCH_REALVIEW
 241         bool "ARM Ltd. RealView family"
 242         select ARM_AMBA
 243         select CLKDEV_LOOKUP
 244         select HAVE_SCHED_CLOCK
 245         select ICST
 246         select GENERIC_CLOCKEVENTS
 247         select ARCH_WANT_OPTIONAL_GPIOLIB
 248         select PLAT_VERSATILE
 249         select ARM_TIMER_SP804
 250         select GPIO_PL061 if GPIOLIB
 251         help
 252           This enables support for ARM Ltd RealView boards.
 253
 254 config ARCH_VERSATILE
 255         bool "ARM Ltd. Versatile family"
 256         select ARM_AMBA
 257         select ARM_VIC
 258         select CLKDEV_LOOKUP
 259         select HAVE_SCHED_CLOCK
 260         select ICST
 261         select GENERIC_CLOCKEVENTS
 262         select ARCH_WANT_OPTIONAL_GPIOLIB
 263         select PLAT_VERSATILE
 264         select ARM_TIMER_SP804
 265         help
 266           This enables support for ARM Ltd Versatile board.
 267
 268 config ARCH_VEXPRESS
 269         bool "ARM Ltd. Versatile Express family"
 270         select ARCH_WANT_OPTIONAL_GPIOLIB
 271         select ARM_AMBA
 272         select ARM_TIMER_SP804
 273         select CLKDEV_LOOKUP
 274         select GENERIC_CLOCKEVENTS
 275         select HAVE_CLK
 276         select HAVE_SCHED_CLOCK
 277         select ICST
 278         select PLAT_VERSATILE
 279         help
 280           This enables support for the ARM Ltd Versatile Express boards.
 281
 282 config ARCH_AT91
 283         bool "Atmel AT91"
 284         select ARCH_REQUIRE_GPIOLIB
 285         select HAVE_CLK
 286         help
 287           This enables support for systems based on the Atmel AT91RM9200,
 288           AT91SAM9 and AT91CAP9 processors.
 289
 290 config ARCH_BCMRING
 291         bool "Broadcom BCMRING"
 292         depends on MMU
 293         select CPU_V6
 294         select ARM_AMBA
 295         select CLKDEV_LOOKUP
 296         select GENERIC_CLOCKEVENTS
 297         select ARCH_WANT_OPTIONAL_GPIOLIB
 298         help
 299           Support for Broadcom's BCMRing platform.
 300
 301 config ARCH_CLPS711X
 302         bool "Cirrus Logic CLPS711x/EP721x-based"
 303         select CPU_ARM720T
 304         select ARCH_USES_GETTIMEOFFSET
 305         help
 306           Support for Cirrus Logic 711x/721x based boards.
 307
 308 config ARCH_CNS3XXX
 309         bool "Cavium Networks CNS3XXX family"
 310         select CPU_V6
 311         select GENERIC_CLOCKEVENTS
 312         select ARM_GIC
 313         select MIGHT_HAVE_PCI
 314         select PCI_DOMAINS if PCI
 315         help
 316           Support for Cavium Networks CNS3XXX platform.
 317
 318 config ARCH_GEMINI
 319         bool "Cortina Systems Gemini"
 320         select CPU_FA526
 321         select ARCH_REQUIRE_GPIOLIB
 322         select ARCH_USES_GETTIMEOFFSET
 323         help
 324           Support for the Cortina Systems Gemini family SoCs
 325
 326 config ARCH_EBSA110
 327         bool "EBSA-110"
 328         select CPU_SA110
 329         select ISA
 330         select NO_IOPORT
 331         select ARCH_USES_GETTIMEOFFSET
 332         help
 333           This is an evaluation board for the StrongARM processor available
 334           from Digital. It has limited hardware on-board, including an
 335           Ethernet interface, two PCMCIA sockets, two serial ports and a
 336           parallel port.
 337
 338 config ARCH_EP93XX
 339         bool "EP93xx-based"
 340         select CPU_ARM920T
 341         select ARM_AMBA
 342         select ARM_VIC
 343         select CLKDEV_LOOKUP
 344         select ARCH_REQUIRE_GPIOLIB
 345         select ARCH_HAS_HOLES_MEMORYMODEL
 346         select ARCH_USES_GETTIMEOFFSET
 347         help
 348           This enables support for the Cirrus EP93xx series of CPUs.
 349
 350 config ARCH_FOOTBRIDGE
 351         bool "FootBridge"
 352         select CPU_SA110
 353         select FOOTBRIDGE
 354         select ARCH_USES_GETTIMEOFFSET
 355         help
 356           Support for systems based on the DC21285 companion chip
 357           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 358
 359 config ARCH_MXC
 360         bool "Freescale MXC/iMX-based"
 361         select GENERIC_CLOCKEVENTS
 362         select ARCH_REQUIRE_GPIOLIB
 363         select CLKDEV_LOOKUP
 364         help
 365           Support for Freescale MXC/iMX-based family of processors
 366
 367 config ARCH_STMP3XXX
 368         bool "Freescale STMP3xxx"
 369         select CPU_ARM926T
 370         select CLKDEV_LOOKUP
 371         select ARCH_REQUIRE_GPIOLIB
 372         select GENERIC_CLOCKEVENTS
 373         select USB_ARCH_HAS_EHCI
 374         help
 375           Support for systems based on the Freescale 3xxx CPUs.
 376
 377 config ARCH_NETX
 378         bool "Hilscher NetX based"
 379         select CPU_ARM926T
 380         select ARM_VIC
 381         select GENERIC_CLOCKEVENTS
 382         help
 383           This enables support for systems based on the Hilscher NetX Soc
 384
 385 config ARCH_H720X
 386         bool "Hynix HMS720x-based"
 387         select CPU_ARM720T
 388         select ISA_DMA_API
 389         select ARCH_USES_GETTIMEOFFSET
 390         help
 391           This enables support for systems based on the Hynix HMS720x
 392
 393 config ARCH_IOP13XX
 394         bool "IOP13xx-based"
 395         depends on MMU
 396         select CPU_XSC3
 397         select PLAT_IOP
 398         select PCI
 399         select ARCH_SUPPORTS_MSI
 400         select VMSPLIT_1G
 401         help
 402           Support for Intel's IOP13XX (XScale) family of processors.
 403
 404 config ARCH_IOP32X
 405         bool "IOP32x-based"
 406         depends on MMU
 407         select CPU_XSCALE
 408         select PLAT_IOP
 409         select PCI
 410         select ARCH_REQUIRE_GPIOLIB
 411         help
 412           Support for Intel's 80219 and IOP32X (XScale) family of
 413           processors.
 414
 415 config ARCH_IOP33X
 416         bool "IOP33x-based"
 417         depends on MMU
 418         select CPU_XSCALE
 419         select PLAT_IOP
 420         select PCI
 421         select ARCH_REQUIRE_GPIOLIB
 422         help
 423           Support for Intel's IOP33X (XScale) family of processors.
 424
 425 config ARCH_IXP23XX
 426         bool "IXP23XX-based"
 427         depends on MMU
 428         select CPU_XSC3
 429         select PCI
 430         select ARCH_USES_GETTIMEOFFSET
 431         help
 432           Support for Intel's IXP23xx (XScale) family of processors.
 433
 434 config ARCH_IXP2000
 435         bool "IXP2400/2800-based"
 436         depends on MMU
 437         select CPU_XSCALE
 438         select PCI
 439         select ARCH_USES_GETTIMEOFFSET
 440         help
 441           Support for Intel's IXP2400/2800 (XScale) family of processors.
 442
 443 config ARCH_IXP4XX
 444         bool "IXP4xx-based"
 445         depends on MMU
 446         select CPU_XSCALE
 447         select GENERIC_GPIO
 448         select GENERIC_CLOCKEVENTS
 449         select HAVE_SCHED_CLOCK
 450         select MIGHT_HAVE_PCI
 451         select DMABOUNCE if PCI
 452         help
 453           Support for Intel's IXP4XX (XScale) family of processors.
 454
 455 config ARCH_DOVE
 456         bool "Marvell Dove"
 457         select PCI
 458         select ARCH_REQUIRE_GPIOLIB
 459         select GENERIC_CLOCKEVENTS
 460         select PLAT_ORION
 461         help
 462           Support for the Marvell Dove SoC 88AP510
 463
 464 config ARCH_KIRKWOOD
 465         bool "Marvell Kirkwood"
 466         select CPU_FEROCEON
 467         select PCI
 468         select ARCH_REQUIRE_GPIOLIB
 469         select GENERIC_CLOCKEVENTS
 470         select PLAT_ORION
 471         help
 472           Support for the following Marvell Kirkwood series SoCs:
 473           88F6180, 88F6192 and 88F6281.
 474
 475 config ARCH_LOKI
 476         bool "Marvell Loki (88RC8480)"
 477         select CPU_FEROCEON
 478         select GENERIC_CLOCKEVENTS
 479         select PLAT_ORION
 480         help
 481           Support for the Marvell Loki (88RC8480) SoC.
 482
 483 config ARCH_LPC32XX
 484         bool "NXP LPC32XX"
 485         select CPU_ARM926T
 486         select ARCH_REQUIRE_GPIOLIB
 487         select HAVE_IDE
 488         select ARM_AMBA
 489         select USB_ARCH_HAS_OHCI
 490         select CLKDEV_LOOKUP
 491         select GENERIC_TIME
 492         select GENERIC_CLOCKEVENTS
 493         help
 494           Support for the NXP LPC32XX family of processors
 495
 496 config ARCH_MV78XX0
 497         bool "Marvell MV78xx0"
 498         select CPU_FEROCEON
 499         select PCI
 500         select ARCH_REQUIRE_GPIOLIB
 501         select GENERIC_CLOCKEVENTS
 502         select PLAT_ORION
 503         help
 504           Support for the following Marvell MV78xx0 series SoCs:
 505           MV781x0, MV782x0.
 506
 507 config ARCH_ORION5X
 508         bool "Marvell Orion"
 509         depends on MMU
 510         select CPU_FEROCEON
 511         select PCI
 512         select ARCH_REQUIRE_GPIOLIB
 513         select GENERIC_CLOCKEVENTS
 514         select PLAT_ORION
 515         help
 516           Support for the following Marvell Orion 5x series SoCs:
 517           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 518           Orion-2 (5281), Orion-1-90 (6183).
 519
 520 config ARCH_MMP
 521         bool "Marvell PXA168/910/MMP2"
 522         depends on MMU
 523         select ARCH_REQUIRE_GPIOLIB
 524         select CLKDEV_LOOKUP
 525         select GENERIC_CLOCKEVENTS
 526         select HAVE_SCHED_CLOCK
 527         select TICK_ONESHOT
 528         select PLAT_PXA
 529         select SPARSE_IRQ
 530         help
 531           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 532
 533 config ARCH_KS8695
 534         bool "Micrel/Kendin KS8695"
 535         select CPU_ARM922T
 536         select ARCH_REQUIRE_GPIOLIB
 537         select ARCH_USES_GETTIMEOFFSET
 538         help
 539           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 540           System-on-Chip devices.
 541
 542 config ARCH_NS9XXX
 543         bool "NetSilicon NS9xxx"
 544         select CPU_ARM926T
 545         select GENERIC_GPIO
 546         select GENERIC_CLOCKEVENTS
 547         select HAVE_CLK
 548         help
 549           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 550           System.
 551
 552           <http://www.digi.com/products/microprocessors/index.jsp>
 553
 554 config ARCH_W90X900
 555         bool "Nuvoton W90X900 CPU"
 556         select CPU_ARM926T
 557         select ARCH_REQUIRE_GPIOLIB
 558         select CLKDEV_LOOKUP
 559         select GENERIC_CLOCKEVENTS
 560         help
 561           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 562           At present, the w90x900 has been renamed nuc900, regarding
 563           the ARM series product line, you can login the following
 564           link address to know more.
 565
 566           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 567                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 568
 569 config ARCH_NUC93X
 570         bool "Nuvoton NUC93X CPU"
 571         select CPU_ARM926T
 572         select CLKDEV_LOOKUP
 573         help
 574           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 575           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 576
 577 config ARCH_TEGRA
 578         bool "NVIDIA Tegra"
 579         select CLKDEV_LOOKUP
 580         select GENERIC_TIME
 581         select GENERIC_CLOCKEVENTS
 582         select GENERIC_GPIO
 583         select HAVE_CLK
 584         select HAVE_SCHED_CLOCK
 585         select ARCH_HAS_BARRIERS if CACHE_L2X0
 586         select ARCH_HAS_CPUFREQ
 587         help
 588           This enables support for NVIDIA Tegra based systems (Tegra APX,
 589           Tegra 6xx and Tegra 2 series).
 590
 591 config ARCH_PNX4008
 592         bool "Philips Nexperia PNX4008 Mobile"
 593         select CPU_ARM926T
 594         select CLKDEV_LOOKUP
 595         select ARCH_USES_GETTIMEOFFSET
 596         help
 597           This enables support for Philips PNX4008 mobile platform.
 598
 599 config ARCH_PXA
 600         bool "PXA2xx/PXA3xx-based"
 601         depends on MMU
 602         select ARCH_MTD_XIP
 603         select ARCH_HAS_CPUFREQ
 604         select CLKDEV_LOOKUP
 605         select ARCH_REQUIRE_GPIOLIB
 606         select GENERIC_CLOCKEVENTS
 607         select HAVE_SCHED_CLOCK
 608         select TICK_ONESHOT
 609         select PLAT_PXA
 610         select SPARSE_IRQ
 611         help
 612           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 613
 614 config ARCH_MSM
 615         bool "Qualcomm MSM"
 616         select HAVE_CLK
 617         select GENERIC_CLOCKEVENTS
 618         select ARCH_REQUIRE_GPIOLIB
 619         help
 620           Support for Qualcomm MSM/QSD based systems.  This runs on the
 621           apps processor of the MSM/QSD and depends on a shared memory
 622           interface to the modem processor which runs the baseband
 623           stack and controls some vital subsystems
 624           (clock and power control, etc).
 625
 626 config ARCH_SHMOBILE
 627         bool "Renesas SH-Mobile"
 628         help
 629           Support for Renesas's SH-Mobile ARM platforms
 630
 631 config ARCH_RPC
 632         bool "RiscPC"
 633         select ARCH_ACORN
 634         select FIQ
 635         select TIMER_ACORN
 636         select ARCH_MAY_HAVE_PC_FDC
 637         select HAVE_PATA_PLATFORM
 638         select ISA_DMA_API
 639         select NO_IOPORT
 640         select ARCH_SPARSEMEM_ENABLE
 641         select ARCH_USES_GETTIMEOFFSET
 642         help
 643           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 644           CD-ROM interface, serial and parallel port, and the floppy drive.
 645
 646 config ARCH_SA1100
 647         bool "SA1100-based"
 648         select CPU_SA1100
 649         select ISA
 650         select ARCH_SPARSEMEM_ENABLE
 651         select ARCH_MTD_XIP
 652         select ARCH_HAS_CPUFREQ
 653         select CPU_FREQ
 654         select GENERIC_CLOCKEVENTS
 655         select HAVE_CLK
 656         select HAVE_SCHED_CLOCK
 657         select TICK_ONESHOT
 658         select ARCH_REQUIRE_GPIOLIB
 659         help
 660           Support for StrongARM 11x0 based boards.
 661
 662 config ARCH_S3C2410
 663         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 664         select GENERIC_GPIO
 665         select ARCH_HAS_CPUFREQ
 666         select HAVE_CLK
 667         select ARCH_USES_GETTIMEOFFSET
 668         select HAVE_S3C2410_I2C if I2C
 669         help
 670           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 671           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 672           the Samsung SMDK2410 development board (and derivatives).
 673
 674           Note, the S3C2416 and the S3C2450 are so close that they even share
 675           the same SoC ID code. This means that there is no seperate machine
 676           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 677
 678 config ARCH_S3C64XX
 679         bool "Samsung S3C64XX"
 680         select PLAT_SAMSUNG
 681         select CPU_V6
 682         select ARM_VIC
 683         select HAVE_CLK
 684         select NO_IOPORT
 685         select ARCH_USES_GETTIMEOFFSET
 686         select ARCH_HAS_CPUFREQ
 687         select ARCH_REQUIRE_GPIOLIB
 688         select SAMSUNG_CLKSRC
 689         select SAMSUNG_IRQ_VIC_TIMER
 690         select SAMSUNG_IRQ_UART
 691         select S3C_GPIO_TRACK
 692         select S3C_GPIO_PULL_UPDOWN
 693         select S3C_GPIO_CFG_S3C24XX
 694         select S3C_GPIO_CFG_S3C64XX
 695         select S3C_DEV_NAND
 696         select USB_ARCH_HAS_OHCI
 697         select SAMSUNG_GPIOLIB_4BIT
 698         select HAVE_S3C2410_I2C if I2C
 699         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 700         help
 701           Samsung S3C64XX series based systems
 702
 703 config ARCH_S5P64X0
 704         bool "Samsung S5P6440 S5P6450"
 705         select CPU_V6
 706         select GENERIC_GPIO
 707         select HAVE_CLK
 708         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 709         select ARCH_USES_GETTIMEOFFSET
 710         select HAVE_S3C2410_I2C if I2C
 711         select HAVE_S3C_RTC if RTC_CLASS
 712         help
 713           Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
 714           SMDK6450.
 715
 716 config ARCH_S5P6442
 717         bool "Samsung S5P6442"
 718         select CPU_V6
 719         select GENERIC_GPIO
 720         select HAVE_CLK
 721         select ARCH_USES_GETTIMEOFFSET
 722         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 723         help
 724           Samsung S5P6442 CPU based systems
 725
 726 config ARCH_S5PC100
 727         bool "Samsung S5PC100"
 728         select GENERIC_GPIO
 729         select HAVE_CLK
 730         select CPU_V7
 731         select ARM_L1_CACHE_SHIFT_6
 732         select ARCH_USES_GETTIMEOFFSET
 733         select HAVE_S3C2410_I2C if I2C
 734         select HAVE_S3C_RTC if RTC_CLASS
 735         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 736         help
 737           Samsung S5PC100 series based systems
 738
 739 config ARCH_S5PV210
 740         bool "Samsung S5PV210/S5PC110"
 741         select CPU_V7
 742         select ARCH_SPARSEMEM_ENABLE
 743         select GENERIC_GPIO
 744         select HAVE_CLK
 745         select ARM_L1_CACHE_SHIFT_6
 746         select ARCH_HAS_CPUFREQ
 747         select ARCH_USES_GETTIMEOFFSET
 748         select HAVE_S3C2410_I2C if I2C
 749         select HAVE_S3C_RTC if RTC_CLASS
 750         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 751         help
 752           Samsung S5PV210/S5PC110 series based systems
 753
 754 config ARCH_S5PV310
 755         bool "Samsung S5PV310/S5PC210"
 756         select CPU_V7
 757         select ARCH_SPARSEMEM_ENABLE
 758         select GENERIC_GPIO
 759         select HAVE_CLK
 760         select GENERIC_CLOCKEVENTS
 761         select HAVE_S3C_RTC if RTC_CLASS
 762         select HAVE_S3C2410_I2C if I2C
 763         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 764         help
 765           Samsung S5PV310 series based systems
 766
 767 config ARCH_SHARK
 768         bool "Shark"
 769         select CPU_SA110
 770         select ISA
 771         select ISA_DMA
 772         select ZONE_DMA
 773         select PCI
 774         select ARCH_USES_GETTIMEOFFSET
 775         help
 776           Support for the StrongARM based Digital DNARD machine, also known
 777           as "Shark" (<http://www.shark-linux.de/shark.html>).
 778
 779 config ARCH_TCC_926
 780         bool "Telechips TCC ARM926-based systems"
 781         select CPU_ARM926T
 782         select HAVE_CLK
 783         select CLKDEV_LOOKUP
 784         select GENERIC_CLOCKEVENTS
 785         help
 786           Support for Telechips TCC ARM926-based systems.
 787
 788 config ARCH_LH7A40X
 789         bool "Sharp LH7A40X"
 790         select CPU_ARM922T
 791         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 792         select ARCH_USES_GETTIMEOFFSET
 793         help
 794           Say Y here for systems based on one of the Sharp LH7A40X
 795           System on a Chip processors.  These CPUs include an ARM922T
 796           core with a wide array of integrated devices for
 797           hand-held and low-power applications.
 798
 799 config ARCH_U300
 800         bool "ST-Ericsson U300 Series"
 801         depends on MMU
 802         select CPU_ARM926T
 803         select HAVE_SCHED_CLOCK
 804         select HAVE_TCM
 805         select ARM_AMBA
 806         select ARM_VIC
 807         select GENERIC_CLOCKEVENTS
 808         select CLKDEV_LOOKUP
 809         select GENERIC_GPIO
 810         help
 811           Support for ST-Ericsson U300 series mobile platforms.
 812
 813 config ARCH_U8500
 814         bool "ST-Ericsson U8500 Series"
 815         select CPU_V7
 816         select ARM_AMBA
 817         select GENERIC_CLOCKEVENTS
 818         select CLKDEV_LOOKUP
 819         select ARCH_REQUIRE_GPIOLIB
 820         help
 821           Support for ST-Ericsson's Ux500 architecture
 822
 823 config ARCH_NOMADIK
 824         bool "STMicroelectronics Nomadik"
 825         select ARM_AMBA
 826         select ARM_VIC
 827         select CPU_ARM926T
 828         select CLKDEV_LOOKUP
 829         select GENERIC_CLOCKEVENTS
 830         select ARCH_REQUIRE_GPIOLIB
 831         help
 832           Support for the Nomadik platform by ST-Ericsson
 833
 834 config ARCH_DAVINCI
 835         bool "TI DaVinci"
 836         select GENERIC_CLOCKEVENTS
 837         select ARCH_REQUIRE_GPIOLIB
 838         select ZONE_DMA
 839         select HAVE_IDE
 840         select CLKDEV_LOOKUP
 841         select GENERIC_ALLOCATOR
 842         select ARCH_HAS_HOLES_MEMORYMODEL
 843         help
 844           Support for TI's DaVinci platform.
 845
 846 config ARCH_OMAP
 847         bool "TI OMAP"
 848         select HAVE_CLK
 849         select ARCH_REQUIRE_GPIOLIB
 850         select ARCH_HAS_CPUFREQ
 851         select GENERIC_CLOCKEVENTS
 852         select HAVE_SCHED_CLOCK
 853         select ARCH_HAS_HOLES_MEMORYMODEL
 854         help
 855           Support for TI's OMAP platform (OMAP1/2/3/4).
 856
 857 config PLAT_SPEAR
 858         bool "ST SPEAr"
 859         select ARM_AMBA
 860         select ARCH_REQUIRE_GPIOLIB
 861         select CLKDEV_LOOKUP
 862         select GENERIC_CLOCKEVENTS
 863         select HAVE_CLK
 864         help
 865           Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
 866
 867 endchoice
 868
 869 #
 870 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 871 # Kconfigs may be included either alphabetically (according to the
 872 # plat- suffix) or along side the corresponding mach-* source.
 873 #
 874 source "arch/arm/mach-aaec2000/Kconfig"
 875
 876 source "arch/arm/mach-at91/Kconfig"
 877
 878 source "arch/arm/mach-bcmring/Kconfig"
 879
 880 source "arch/arm/mach-clps711x/Kconfig"
 881
 882 source "arch/arm/mach-cns3xxx/Kconfig"
 883
 884 source "arch/arm/mach-davinci/Kconfig"
 885
 886 source "arch/arm/mach-dove/Kconfig"
 887
 888 source "arch/arm/mach-ep93xx/Kconfig"
 889
 890 source "arch/arm/mach-footbridge/Kconfig"
 891
 892 source "arch/arm/mach-gemini/Kconfig"
 893
 894 source "arch/arm/mach-h720x/Kconfig"
 895
 896 source "arch/arm/mach-integrator/Kconfig"
 897
 898 source "arch/arm/mach-iop32x/Kconfig"
 899
 900 source "arch/arm/mach-iop33x/Kconfig"
 901
 902 source "arch/arm/mach-iop13xx/Kconfig"
 903
 904 source "arch/arm/mach-ixp4xx/Kconfig"
 905
 906 source "arch/arm/mach-ixp2000/Kconfig"
 907
 908 source "arch/arm/mach-ixp23xx/Kconfig"
 909
 910 source "arch/arm/mach-kirkwood/Kconfig"
 911
 912 source "arch/arm/mach-ks8695/Kconfig"
 913
 914 source "arch/arm/mach-lh7a40x/Kconfig"
 915
 916 source "arch/arm/mach-loki/Kconfig"
 917
 918 source "arch/arm/mach-lpc32xx/Kconfig"
 919
 920 source "arch/arm/mach-msm/Kconfig"
 921
 922 source "arch/arm/mach-mv78xx0/Kconfig"
 923
 924 source "arch/arm/plat-mxc/Kconfig"
 925
 926 source "arch/arm/mach-netx/Kconfig"
 927
 928 source "arch/arm/mach-nomadik/Kconfig"
 929 source "arch/arm/plat-nomadik/Kconfig"
 930
 931 source "arch/arm/mach-ns9xxx/Kconfig"
 932
 933 source "arch/arm/mach-nuc93x/Kconfig"
 934
 935 source "arch/arm/plat-omap/Kconfig"
 936
 937 source "arch/arm/mach-omap1/Kconfig"
 938
 939 source "arch/arm/mach-omap2/Kconfig"
 940
 941 source "arch/arm/mach-orion5x/Kconfig"
 942
 943 source "arch/arm/mach-pxa/Kconfig"
 944 source "arch/arm/plat-pxa/Kconfig"
 945
 946 source "arch/arm/mach-mmp/Kconfig"
 947
 948 source "arch/arm/mach-realview/Kconfig"
 949
 950 source "arch/arm/mach-sa1100/Kconfig"
 951
 952 source "arch/arm/plat-samsung/Kconfig"
 953 source "arch/arm/plat-s3c24xx/Kconfig"
 954 source "arch/arm/plat-s5p/Kconfig"
 955
 956 source "arch/arm/plat-spear/Kconfig"
 957
 958 source "arch/arm/plat-tcc/Kconfig"
 959
 960 if ARCH_S3C2410
 961 source "arch/arm/mach-s3c2400/Kconfig"
 962 source "arch/arm/mach-s3c2410/Kconfig"
 963 source "arch/arm/mach-s3c2412/Kconfig"
 964 source "arch/arm/mach-s3c2416/Kconfig"
 965 source "arch/arm/mach-s3c2440/Kconfig"
 966 source "arch/arm/mach-s3c2443/Kconfig"
 967 endif
 968
 969 if ARCH_S3C64XX
 970 source "arch/arm/mach-s3c64xx/Kconfig"
 971 endif
 972
 973 source "arch/arm/mach-s5p64x0/Kconfig"
 974
 975 source "arch/arm/mach-s5p6442/Kconfig"
 976
 977 source "arch/arm/mach-s5pc100/Kconfig"
 978
 979 source "arch/arm/mach-s5pv210/Kconfig"
 980
 981 source "arch/arm/mach-s5pv310/Kconfig"
 982
 983 source "arch/arm/mach-shmobile/Kconfig"
 984
 985 source "arch/arm/plat-stmp3xxx/Kconfig"
 986
 987 source "arch/arm/mach-tegra/Kconfig"
 988
 989 source "arch/arm/mach-u300/Kconfig"
 990
 991 source "arch/arm/mach-ux500/Kconfig"
 992
 993 source "arch/arm/mach-versatile/Kconfig"
 994
 995 source "arch/arm/mach-vexpress/Kconfig"
 996
 997 source "arch/arm/mach-w90x900/Kconfig"
 998
 999 # Definitions to make life easier
1000 config ARCH_ACORN
1001         bool
1002
1003 config PLAT_IOP
1004         bool
1005         select GENERIC_CLOCKEVENTS
1006         select HAVE_SCHED_CLOCK
1007
1008 config PLAT_ORION
1009         bool
1010         select HAVE_SCHED_CLOCK
1011
1012 config PLAT_PXA
1013         bool
1014
1015 config PLAT_VERSATILE
1016         bool
1017
1018 config ARM_TIMER_SP804
1019         bool
1020
1021 source arch/arm/mm/Kconfig
1022
1023 config IWMMXT
1024         bool "Enable iWMMXt support"
1025         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
1026         default y if PXA27x || PXA3xx || ARCH_MMP
1027         help
1028           Enable support for iWMMXt context switching at run time if
1029           running on a CPU that supports it.
1030
1031 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1032 config XSCALE_PMU
1033         bool
1034         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1035         default y
1036
1037 config CPU_HAS_PMU
1038         depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
1039                    (!ARCH_OMAP3 || OMAP3_EMU)
1040         default y
1041         bool
1042
1043 config MULTI_IRQ_HANDLER
1044         bool
1045         help
1046           Allow each machine to specify it's own IRQ handler at run time.
1047
1048 if !MMU
1049 source "arch/arm/Kconfig-nommu"
1050 endif
1051
1052 config ARM_ERRATA_411920
1053         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1054         depends on CPU_V6
1055         help
1056           Invalidation of the Instruction Cache operation can
1057           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1058           It does not affect the MPCore. This option enables the ARM Ltd.
1059           recommended workaround.
1060
1061 config ARM_ERRATA_430973
1062         bool "ARM errata: Stale prediction on replaced interworking branch"
1063         depends on CPU_V7
1064         help
1065           This option enables the workaround for the 430973 Cortex-A8
1066           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1067           interworking branch is replaced with another code sequence at the
1068           same virtual address, whether due to self-modifying code or virtual
1069           to physical address re-mapping, Cortex-A8 does not recover from the
1070           stale interworking branch prediction. This results in Cortex-A8
1071           executing the new code sequence in the incorrect ARM or Thumb state.
1072           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1073           and also flushes the branch target cache at every context switch.
1074           Note that setting specific bits in the ACTLR register may not be
1075           available in non-secure mode.
1076
1077 config ARM_ERRATA_458693
1078         bool "ARM errata: Processor deadlock when a false hazard is created"
1079         depends on CPU_V7
1080         help
1081           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1082           erratum. For very specific sequences of memory operations, it is
1083           possible for a hazard condition intended for a cache line to instead
1084           be incorrectly associated with a different cache line. This false
1085           hazard might then cause a processor deadlock. The workaround enables
1086           the L1 caching of the NEON accesses and disables the PLD instruction
1087           in the ACTLR register. Note that setting specific bits in the ACTLR
1088           register may not be available in non-secure mode.
1089
1090 config ARM_ERRATA_460075
1091         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1092         depends on CPU_V7
1093         help
1094           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1095           erratum. Any asynchronous access to the L2 cache may encounter a
1096           situation in which recent store transactions to the L2 cache are lost
1097           and overwritten with stale memory contents from external memory. The
1098           workaround disables the write-allocate mode for the L2 cache via the
1099           ACTLR register. Note that setting specific bits in the ACTLR register
1100           may not be available in non-secure mode.
1101
1102 config ARM_ERRATA_742230
1103         bool "ARM errata: DMB operation may be faulty"
1104         depends on CPU_V7 && SMP
1105         help
1106           This option enables the workaround for the 742230 Cortex-A9
1107           (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1108           between two write operations may not ensure the correct visibility
1109           ordering of the two writes. This workaround sets a specific bit in
1110           the diagnostic register of the Cortex-A9 which causes the DMB
1111           instruction to behave as a DSB, ensuring the correct behaviour of
1112           the two writes.
1113
1114 config ARM_ERRATA_742231
1115         bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1116         depends on CPU_V7 && SMP
1117         help
1118           This option enables the workaround for the 742231 Cortex-A9
1119           (r2p0..r2p2) erratum. Under certain conditions, specific to the
1120           Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1121           accessing some data located in the same cache line, may get corrupted
1122           data due to bad handling of the address hazard when the line gets
1123           replaced from one of the CPUs at the same time as another CPU is
1124           accessing it. This workaround sets specific bits in the diagnostic
1125           register of the Cortex-A9 which reduces the linefill issuing
1126           capabilities of the processor.
1127
1128 config PL310_ERRATA_588369
1129         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1130         depends on CACHE_L2X0 && ARCH_OMAP4
1131         help
1132            The PL310 L2 cache controller implements three types of Clean &
1133            Invalidate maintenance operations: by Physical Address
1134            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1135            They are architecturally defined to behave as the execution of a
1136            clean operation followed immediately by an invalidate operation,
1137            both performing to the same memory location. This functionality
1138            is not correctly implemented in PL310 as clean lines are not
1139            invalidated as a result of these operations. Note that this errata
1140            uses Texas Instrument's secure monitor api.
1141
1142 config ARM_ERRATA_720789
1143         bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1144         depends on CPU_V7 && SMP
1145         help
1146           This option enables the workaround for the 720789 Cortex-A9 (prior to
1147           r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1148           broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1149           As a consequence of this erratum, some TLB entries which should be
1150           invalidated are not, resulting in an incoherency in the system page
1151           tables. The workaround changes the TLB flushing routines to invalidate
1152           entries regardless of the ASID.
1153
1154 config ARM_ERRATA_743622
1155         bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1156         depends on CPU_V7
1157         help
1158           This option enables the workaround for the 743622 Cortex-A9
1159           (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1160           optimisation in the Cortex-A9 Store Buffer may lead to data
1161           corruption. This workaround sets a specific bit in the diagnostic
1162           register of the Cortex-A9 which disables the Store Buffer
1163           optimisation, preventing the defect from occurring. This has no
1164           visible impact on the overall performance or power consumption of the
1165           processor.
1166
1167 endmenu
1168
1169 source "arch/arm/common/Kconfig"
1170
1171 menu "Bus support"
1172
1173 config ARM_AMBA
1174         bool
1175
1176 config ISA
1177         bool
1178         help
1179           Find out whether you have ISA slots on your motherboard.  ISA is the
1180           name of a bus system, i.e. the way the CPU talks to the other stuff
1181           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1182           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1183           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1184
1185 # Select ISA DMA controller support
1186 config ISA_DMA
1187         bool
1188         select ISA_DMA_API
1189
1190 # Select ISA DMA interface
1191 config ISA_DMA_API
1192         bool
1193
1194 config PCI
1195         bool "PCI support" if MIGHT_HAVE_PCI
1196         help
1197           Find out whether you have a PCI motherboard. PCI is the name of a
1198           bus system, i.e. the way the CPU talks to the other stuff inside
1199           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1200           VESA. If you have PCI, say Y, otherwise N.
1201
1202 config PCI_DOMAINS
1203         bool
1204         depends on PCI
1205
1206 config PCI_NANOENGINE
1207         bool "BSE nanoEngine PCI support"
1208         depends on SA1100_NANOENGINE
1209         help
1210           Enable PCI on the BSE nanoEngine board.
1211
1212 config PCI_SYSCALL
1213         def_bool PCI
1214
1215 # Select the host bridge type
1216 config PCI_HOST_VIA82C505
1217         bool
1218         depends on PCI && ARCH_SHARK
1219         default y
1220
1221 config PCI_HOST_ITE8152
1222         bool
1223         depends on PCI && MACH_ARMCORE
1224         default y
1225         select DMABOUNCE
1226
1227 source "drivers/pci/Kconfig"
1228
1229 source "drivers/pcmcia/Kconfig"
1230
1231 endmenu
1232
1233 menu "Kernel Features"
1234
1235 source "kernel/time/Kconfig"
1236
1237 config SMP
1238         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1239         depends on EXPERIMENTAL
1240         depends on GENERIC_CLOCKEVENTS
1241         depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1242                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1243                  ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1244                  ARCH_MSM_SCORPIONMP
1245         select USE_GENERIC_SMP_HELPERS
1246         select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1247         help
1248           This enables support for systems with more than one CPU. If you have
1249           a system with only one CPU, like most personal computers, say N. If
1250           you have a system with more than one CPU, say Y.
1251
1252           If you say N here, the kernel will run on single and multiprocessor
1253           machines, but will use only one CPU of a multiprocessor machine. If
1254           you say Y here, the kernel will run on many, but not all, single
1255           processor machines. On a single processor machine, the kernel will
1256           run faster if you say N here.
1257
1258           See also <file:Documentation/i386/IO-APIC.txt>,
1259           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1260           <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1261
1262           If you don't know what to do here, say N.
1263
1264 config SMP_ON_UP
1265         bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1266         depends on EXPERIMENTAL
1267         depends on SMP && !XIP
1268         default y
1269         help
1270           SMP kernels contain instructions which fail on non-SMP processors.
1271           Enabling this option allows the kernel to modify itself to make
1272           these instructions safe.  Disabling it allows about 1K of space
1273           savings.
1274
1275           If you don't know what to do here, say Y.
1276
1277 config HAVE_ARM_SCU
1278         bool
1279         depends on SMP
1280         help
1281           This option enables support for the ARM system coherency unit
1282
1283 config HAVE_ARM_TWD
1284         bool
1285         depends on SMP
1286         select TICK_ONESHOT
1287         help
1288           This options enables support for the ARM timer and watchdog unit
1289
1290 choice
1291         prompt "Memory split"
1292         default VMSPLIT_3G
1293         help
1294           Select the desired split between kernel and user memory.
1295
1296           If you are not absolutely sure what you are doing, leave this
1297           option alone!
1298
1299         config VMSPLIT_3G
1300                 bool "3G/1G user/kernel split"
1301         config VMSPLIT_2G
1302                 bool "2G/2G user/kernel split"
1303         config VMSPLIT_1G
1304                 bool "1G/3G user/kernel split"
1305 endchoice
1306
1307 config PAGE_OFFSET
1308         hex
1309         default 0x40000000 if VMSPLIT_1G
1310         default 0x80000000 if VMSPLIT_2G
1311         default 0xC0000000
1312
1313 config NR_CPUS
1314         int "Maximum number of CPUs (2-32)"
1315         range 2 32
1316         depends on SMP
1317         default "4"
1318
1319 config HOTPLUG_CPU
1320         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1321         depends on SMP && HOTPLUG && EXPERIMENTAL
1322         depends on !ARCH_MSM
1323         help
1324           Say Y here to experiment with turning CPUs off and on.  CPUs
1325           can be controlled through /sys/devices/system/cpu.
1326
1327 config LOCAL_TIMERS
1328         bool "Use local timer interrupts"
1329         depends on SMP
1330         default y
1331         select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
1332         help
1333           Enable support for local timers on SMP platforms, rather then the
1334           legacy IPI broadcast method.  Local timers allows the system
1335           accounting to be spread across the timer interval, preventing a
1336           "thundering herd" at every timer tick.
1337
1338 source kernel/Kconfig.preempt
1339
1340 config HZ
1341         int
1342         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
1343                 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
1344         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1345         default AT91_TIMER_HZ if ARCH_AT91
1346         default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1347         default 100
1348
1349 config THUMB2_KERNEL
1350         bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
1351         depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
1352         select AEABI
1353         select ARM_ASM_UNIFIED
1354         help
1355           By enabling this option, the kernel will be compiled in
1356           Thumb-2 mode. A compiler/assembler that understand the unified
1357           ARM-Thumb syntax is needed.
1358
1359           If unsure, say N.
1360
1361 config ARM_ASM_UNIFIED
1362         bool
1363
1364 config AEABI
1365         bool "Use the ARM EABI to compile the kernel"
1366         help
1367           This option allows for the kernel to be compiled using the latest
1368           ARM ABI (aka EABI).  This is only useful if you are using a user
1369           space environment that is also compiled with EABI.
1370
1371           Since there are major incompatibilities between the legacy ABI and
1372           EABI, especially with regard to structure member alignment, this
1373           option also changes the kernel syscall calling convention to
1374           disambiguate both ABIs and allow for backward compatibility support
1375           (selected with CONFIG_OABI_COMPAT).
1376
1377           To use this you need GCC version 4.0.0 or later.
1378
1379 config OABI_COMPAT
1380         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1381         depends on AEABI && EXPERIMENTAL
1382         default y
1383         help
1384           This option preserves the old syscall interface along with the
1385           new (ARM EABI) one. It also provides a compatibility layer to
1386           intercept syscalls that have structure arguments which layout
1387           in memory differs between the legacy ABI and the new ARM EABI
1388           (only for non "thumb" binaries). This option adds a tiny
1389           overhead to all syscalls and produces a slightly larger kernel.
1390           If you know you'll be using only pure EABI user space then you
1391           can say N here. If this option is not selected and you attempt
1392           to execute a legacy ABI binary then the result will be
1393           UNPREDICTABLE (in fact it can be predicted that it won't work
1394           at all). If in doubt say Y.
1395
1396 config ARCH_HAS_HOLES_MEMORYMODEL
1397         bool
1398
1399 config ARCH_SPARSEMEM_ENABLE
1400         bool
1401
1402 config ARCH_SPARSEMEM_DEFAULT
1403         def_bool ARCH_SPARSEMEM_ENABLE
1404
1405 config ARCH_SELECT_MEMORY_MODEL
1406         def_bool ARCH_SPARSEMEM_ENABLE
1407
1408 config HIGHMEM
1409         bool "High Memory Support (EXPERIMENTAL)"
1410         depends on MMU && EXPERIMENTAL
1411         help
1412           The address space of ARM processors is only 4 Gigabytes large
1413           and it has to accommodate user address space, kernel address
1414           space as well as some memory mapped IO. That means that, if you
1415           have a large amount of physical memory and/or IO, not all of the
1416           memory can be "permanently mapped" by the kernel. The physical
1417           memory that is not permanently mapped is called "high memory".
1418
1419           Depending on the selected kernel/user memory split, minimum
1420           vmalloc space and actual amount of RAM, you may not need this
1421           option which should result in a slightly faster kernel.
1422
1423           If unsure, say n.
1424
1425 config HIGHPTE
1426         bool "Allocate 2nd-level pagetables from highmem"
1427         depends on HIGHMEM
1428         depends on !OUTER_CACHE
1429
1430 config HW_PERF_EVENTS
1431         bool "Enable hardware performance counter support for perf events"
1432         depends on PERF_EVENTS && CPU_HAS_PMU
1433         default y
1434         help
1435           Enable hardware performance counter support for perf events. If
1436           disabled, perf events will use software events only.
1437
1438 config SPARSE_IRQ
1439         def_bool n
1440         help
1441           This enables support for sparse irqs. This is useful in general
1442           as most CPUs have a fairly sparse array of IRQ vectors, which
1443           the irq_desc then maps directly on to. Systems with a high
1444           number of off-chip IRQs will want to treat this as
1445           experimental until they have been independently verified.
1446
1447 source "mm/Kconfig"
1448
1449 config FORCE_MAX_ZONEORDER
1450         int "Maximum zone order" if ARCH_SHMOBILE
1451         range 11 64 if ARCH_SHMOBILE
1452         default "9" if SA1111
1453         default "11"
1454         help
1455           The kernel memory allocator divides physically contiguous memory
1456           blocks into "zones", where each zone is a power of two number of
1457           pages.  This option selects the largest power of two that the kernel
1458           keeps in the memory allocator.  If you need to allocate very large
1459           blocks of physically contiguous memory, then you may need to
1460           increase this value.
1461
1462           This config option is actually maximum order plus one. For example,
1463           a value of 11 means that the largest free memory block is 2^10 pages.
1464
1465 config LEDS
1466         bool "Timer and CPU usage LEDs"
1467         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1468                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1469                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1470                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1471                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1472                    ARCH_AT91 || ARCH_DAVINCI || \
1473                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1474         help
1475           If you say Y here, the LEDs on your machine will be used
1476           to provide useful information about your current system status.
1477
1478           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1479           be able to select which LEDs are active using the options below. If
1480           you are compiling a kernel for the EBSA-110 or the LART however, the
1481           red LED will simply flash regularly to indicate that the system is
1482           still functional. It is safe to say Y here if you have a CATS
1483           system, but the driver will do nothing.
1484
1485 config LEDS_TIMER
1486         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1487                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1488                             || MACH_OMAP_PERSEUS2
1489         depends on LEDS
1490         depends on !GENERIC_CLOCKEVENTS
1491         default y if ARCH_EBSA110
1492         help
1493           If you say Y here, one of the system LEDs (the green one on the
1494           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1495           will flash regularly to indicate that the system is still
1496           operational. This is mainly useful to kernel hackers who are
1497           debugging unstable kernels.
1498
1499           The LART uses the same LED for both Timer LED and CPU usage LED
1500           functions. You may choose to use both, but the Timer LED function
1501           will overrule the CPU usage LED.
1502
1503 config LEDS_CPU
1504         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1505                         !ARCH_OMAP) \
1506                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1507                         || MACH_OMAP_PERSEUS2
1508         depends on LEDS
1509         help
1510           If you say Y here, the red LED will be used to give a good real
1511           time indication of CPU usage, by lighting whenever the idle task
1512           is not currently executing.
1513
1514           The LART uses the same LED for both Timer LED and CPU usage LED
1515           functions. You may choose to use both, but the Timer LED function
1516           will overrule the CPU usage LED.
1517
1518 config ALIGNMENT_TRAP
1519         bool
1520         depends on CPU_CP15_MMU
1521         default y if !ARCH_EBSA110
1522         select HAVE_PROC_CPU if PROC_FS
1523         help
1524           ARM processors cannot fetch/store information which is not
1525           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1526           address divisible by 4. On 32-bit ARM processors, these non-aligned
1527           fetch/store instructions will be emulated in software if you say
1528           here, which has a severe performance impact. This is necessary for
1529           correct operation of some network protocols. With an IP-only
1530           configuration it is safe to say N, otherwise say Y.
1531
1532 config UACCESS_WITH_MEMCPY
1533         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1534         depends on MMU && EXPERIMENTAL
1535         default y if CPU_FEROCEON
1536         help
1537           Implement faster copy_to_user and clear_user methods for CPU
1538           cores where a 8-word STM instruction give significantly higher
1539           memory write throughput than a sequence of individual 32bit stores.
1540
1541           A possible side effect is a slight increase in scheduling latency
1542           between threads sharing the same address space if they invoke
1543           such copy operations with large buffers.
1544
1545           However, if the CPU data cache is using a write-allocate mode,
1546           this option is unlikely to provide any performance gain.
1547
1548 config SECCOMP
1549         bool
1550         prompt "Enable seccomp to safely compute untrusted bytecode"
1551         ---help---
1552           This kernel feature is useful for number crunching applications
1553           that may need to compute untrusted bytecode during their
1554           execution. By using pipes or other transports made available to
1555           the process as file descriptors supporting the read/write
1556           syscalls, it's possible to isolate those applications in
1557           their own address space using seccomp. Once seccomp is
1558           enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1559           and the task is only allowed to execute a few safe syscalls
1560           defined by each seccomp mode.
1561
1562 config CC_STACKPROTECTOR
1563         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1564         depends on EXPERIMENTAL
1565         help
1566           This option turns on the -fstack-protector GCC feature. This
1567           feature puts, at the beginning of functions, a canary value on
1568           the stack just before the return address, and validates
1569           the value just before actually returning.  Stack based buffer
1570           overflows (that need to overwrite this return address) now also
1571           overwrite the canary, which gets detected and the attack is then
1572           neutralized via a kernel panic.
1573           This feature requires gcc version 4.2 or above.
1574
1575 config DEPRECATED_PARAM_STRUCT
1576         bool "Provide old way to pass kernel parameters"
1577         help
1578           This was deprecated in 2001 and announced to live on for 5 years.
1579           Some old boot loaders still use this way.
1580
1581 endmenu
1582
1583 menu "Boot options"
1584
1585 # Compressed boot loader in ROM.  Yes, we really want to ask about
1586 # TEXT and BSS so we preserve their values in the config files.
1587 config ZBOOT_ROM_TEXT
1588         hex "Compressed ROM boot loader base address"
1589         default "0"
1590         help
1591           The physical address at which the ROM-able zImage is to be
1592           placed in the target.  Platforms which normally make use of
1593           ROM-able zImage formats normally set this to a suitable
1594           value in their defconfig file.
1595
1596           If ZBOOT_ROM is not enabled, this has no effect.
1597
1598 config ZBOOT_ROM_BSS
1599         hex "Compressed ROM boot loader BSS address"
1600         default "0"
1601         help
1602           The base address of an area of read/write memory in the target
1603           for the ROM-able zImage which must be available while the
1604           decompressor is running. It must be large enough to hold the
1605           entire decompressed kernel plus an additional 128 KiB.
1606           Platforms which normally make use of ROM-able zImage formats
1607           normally set this to a suitable value in their defconfig file.
1608
1609           If ZBOOT_ROM is not enabled, this has no effect.
1610
1611 config ZBOOT_ROM
1612         bool "Compressed boot loader in ROM/flash"
1613         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1614         help
1615           Say Y here if you intend to execute your compressed kernel image
1616           (zImage) directly from ROM or flash.  If unsure, say N.
1617
1618 config CMDLINE
1619         string "Default kernel command string"
1620         default ""
1621         help
1622           On some architectures (EBSA110 and CATS), there is currently no way
1623           for the boot loader to pass arguments to the kernel. For these
1624           architectures, you should supply some command-line options at build
1625           time by entering them here. As a minimum, you should specify the
1626           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1627
1628 config CMDLINE_FORCE
1629         bool "Always use the default kernel command string"
1630         depends on CMDLINE != ""
1631         help
1632           Always use the default kernel command string, even if the boot
1633           loader passes other arguments to the kernel.
1634           This is useful if you cannot or don't want to change the
1635           command-line options your boot loader passes to the kernel.
1636
1637           If unsure, say N.
1638
1639 config XIP_KERNEL
1640         bool "Kernel Execute-In-Place from ROM"
1641         depends on !ZBOOT_ROM
1642         help
1643           Execute-In-Place allows the kernel to run from non-volatile storage
1644           directly addressable by the CPU, such as NOR flash. This saves RAM
1645           space since the text section of the kernel is not loaded from flash
1646           to RAM.  Read-write sections, such as the data section and stack,
1647           are still copied to RAM.  The XIP kernel is not compressed since
1648           it has to run directly from flash, so it will take more space to
1649           store it.  The flash address used to link the kernel object files,
1650           and for storing it, is configuration dependent. Therefore, if you
1651           say Y here, you must know the proper physical address where to
1652           store the kernel image depending on your own flash memory usage.
1653
1654           Also note that the make target becomes "make xipImage" rather than
1655           "make zImage" or "make Image".  The final kernel binary to put in
1656           ROM memory will be arch/arm/boot/xipImage.
1657
1658           If unsure, say N.
1659
1660 config XIP_PHYS_ADDR
1661         hex "XIP Kernel Physical Location"
1662         depends on XIP_KERNEL
1663         default "0x00080000"
1664         help
1665           This is the physical address in your flash memory the kernel will
1666           be linked for and stored to.  This address is dependent on your
1667           own flash usage.
1668
1669 config KEXEC
1670         bool "Kexec system call (EXPERIMENTAL)"
1671         depends on EXPERIMENTAL
1672         help
1673           kexec is a system call that implements the ability to shutdown your
1674           current kernel, and to start another kernel.  It is like a reboot
1675           but it is independent of the system firmware.   And like a reboot
1676           you can start any kernel with it, not just Linux.
1677
1678           It is an ongoing process to be certain the hardware in a machine
1679           is properly shutdown, so do not be surprised if this code does not
1680           initially work for you.  It may help to enable device hotplugging
1681           support.
1682
1683 config ATAGS_PROC
1684         bool "Export atags in procfs"
1685         depends on KEXEC
1686         default y
1687         help
1688           Should the atags used to boot the kernel be exported in an "atags"
1689           file in procfs. Useful with kexec.
1690
1691 config CRASH_DUMP
1692         bool "Build kdump crash kernel (EXPERIMENTAL)"
1693         depends on EXPERIMENTAL
1694         help
1695           Generate crash dump after being started by kexec. This should
1696           be normally only set in special crash dump kernels which are
1697           loaded in the main kernel with kexec-tools into a specially
1698           reserved region and then later executed after a crash by
1699           kdump/kexec. The crash dump kernel must be compiled to a
1700           memory address not used by the main kernel
1701
1702           For more details see Documentation/kdump/kdump.txt
1703
1704 config AUTO_ZRELADDR
1705         bool "Auto calculation of the decompressed kernel image address"
1706         depends on !ZBOOT_ROM && !ARCH_U300
1707         help
1708           ZRELADDR is the physical address where the decompressed kernel
1709           image will be placed. If AUTO_ZRELADDR is selected, the address
1710           will be determined at run-time by masking the current IP with
1711           0xf8000000. This assumes the zImage being placed in the first 128MB
1712           from start of memory.
1713
1714 endmenu
1715
1716 menu "CPU Power Management"
1717
1718 if ARCH_HAS_CPUFREQ
1719
1720 source "drivers/cpufreq/Kconfig"
1721
1722 config CPU_FREQ_IMX
1723         tristate "CPUfreq driver for i.MX CPUs"
1724         depends on ARCH_MXC && CPU_FREQ
1725         help
1726           This enables the CPUfreq driver for i.MX CPUs.
1727
1728 config CPU_FREQ_SA1100
1729         bool
1730
1731 config CPU_FREQ_SA1110
1732         bool
1733
1734 config CPU_FREQ_INTEGRATOR
1735         tristate "CPUfreq driver for ARM Integrator CPUs"
1736         depends on ARCH_INTEGRATOR && CPU_FREQ
1737         default y
1738         help
1739           This enables the CPUfreq driver for ARM Integrator CPUs.
1740
1741           For details, take a look at <file:Documentation/cpu-freq>.
1742
1743           If in doubt, say Y.
1744
1745 config CPU_FREQ_PXA
1746         bool
1747         depends on CPU_FREQ && ARCH_PXA && PXA25x
1748         default y
1749         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1750
1751 config CPU_FREQ_S3C64XX
1752         bool "CPUfreq support for Samsung S3C64XX CPUs"
1753         depends on CPU_FREQ && CPU_S3C6410
1754
1755 config CPU_FREQ_S3C
1756         bool
1757         help
1758           Internal configuration node for common cpufreq on Samsung SoC
1759
1760 config CPU_FREQ_S3C24XX
1761         bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
1762         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1763         select CPU_FREQ_S3C
1764         help
1765           This enables the CPUfreq driver for the Samsung S3C24XX family
1766           of CPUs.
1767
1768           For details, take a look at <file:Documentation/cpu-freq>.
1769
1770           If in doubt, say N.
1771
1772 config CPU_FREQ_S3C24XX_PLL
1773         bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
1774         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1775         help
1776           Compile in support for changing the PLL frequency from the
1777           S3C24XX series CPUfreq driver. The PLL takes time to settle
1778           after a frequency change, so by default it is not enabled.
1779
1780           This also means that the PLL tables for the selected CPU(s) will
1781           be built which may increase the size of the kernel image.
1782
1783 config CPU_FREQ_S3C24XX_DEBUG
1784         bool "Debug CPUfreq Samsung driver core"
1785         depends on CPU_FREQ_S3C24XX
1786         help
1787           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1788
1789 config CPU_FREQ_S3C24XX_IODEBUG
1790         bool "Debug CPUfreq Samsung driver IO timing"
1791         depends on CPU_FREQ_S3C24XX
1792         help
1793           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1794
1795 config CPU_FREQ_S3C24XX_DEBUGFS
1796         bool "Export debugfs for CPUFreq"
1797         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1798         help
1799           Export status information via debugfs.
1800
1801 endif
1802
1803 source "drivers/cpuidle/Kconfig"
1804
1805 endmenu
1806
1807 menu "Floating point emulation"
1808
1809 comment "At least one emulation must be selected"
1810
1811 config FPE_NWFPE
1812         bool "NWFPE math emulation"
1813         depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1814         ---help---
1815           Say Y to include the NWFPE floating point emulator in the kernel.
1816           This is necessary to run most binaries. Linux does not currently
1817           support floating point hardware so you need to say Y here even if
1818           your machine has an FPA or floating point co-processor podule.
1819
1820           You may say N here if you are going to load the Acorn FPEmulator
1821           early in the bootup.
1822
1823 config FPE_NWFPE_XP
1824         bool "Support extended precision"
1825         depends on FPE_NWFPE
1826         help
1827           Say Y to include 80-bit support in the kernel floating-point
1828           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1829           Note that gcc does not generate 80-bit operations by default,
1830           so in most cases this option only enlarges the size of the
1831           floating point emulator without any good reason.
1832
1833           You almost surely want to say N here.
1834
1835 config FPE_FASTFPE
1836         bool "FastFPE math emulation (EXPERIMENTAL)"
1837         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1838         ---help---
1839           Say Y here to include the FAST floating point emulator in the kernel.
1840           This is an experimental much faster emulator which now also has full
1841           precision for the mantissa.  It does not support any exceptions.
1842           It is very simple, and approximately 3-6 times faster than NWFPE.
1843
1844           It should be sufficient for most programs.  It may be not suitable
1845           for scientific calculations, but you have to check this for yourself.
1846           If you do not feel you need a faster FP emulation you should better
1847           choose NWFPE.
1848
1849 config VFP
1850         bool "VFP-format floating point maths"
1851         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1852         help
1853           Say Y to include VFP support code in the kernel. This is needed
1854           if your hardware includes a VFP unit.
1855
1856           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1857           release notes and additional status information.
1858
1859           Say N if your target does not have VFP hardware.
1860
1861 config VFPv3
1862         bool
1863         depends on VFP
1864         default y if CPU_V7
1865
1866 config NEON
1867         bool "Advanced SIMD (NEON) Extension support"
1868         depends on VFPv3 && CPU_V7
1869         help
1870           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1871           Extension.
1872
1873 endmenu
1874
1875 menu "Userspace binary formats"
1876
1877 source "fs/Kconfig.binfmt"
1878
1879 config ARTHUR
1880         tristate "RISC OS personality"
1881         depends on !AEABI
1882         help
1883           Say Y here to include the kernel code necessary if you want to run
1884           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1885           experimental; if this sounds frightening, say N and sleep in peace.
1886           You can also say M here to compile this support as a module (which
1887           will be called arthur).
1888
1889 endmenu
1890
1891 menu "Power management options"
1892
1893 source "kernel/power/Kconfig"
1894
1895 config ARCH_SUSPEND_POSSIBLE
1896         def_bool y
1897
1898 endmenu
1899
1900 source "net/Kconfig"
1901
1902 source "drivers/Kconfig"
1903
1904 source "fs/Kconfig"
1905
1906 source "arch/arm/Kconfig.debug"
1907
1908 source "security/Kconfig"
1909
1910 source "crypto/Kconfig"
1911
1912 source "lib/Kconfig"