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_V6 || !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_V6K || CPU_V7))
  28         select HAVE_C_RECORDMCOUNT
  29         select HAVE_GENERIC_HARDIRQS
  30         select HAVE_SPARSE_IRQ
  31         select GENERIC_IRQ_SHOW
  32         help
  33           The ARM series is a line of low-power-consumption RISC chip designs
  34           licensed by ARM Ltd and targeted at embedded applications and
  35           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  36           manufactured, but legacy ARM-based PC hardware remains popular in
  37           Europe.  There is an ARM Linux project with a web page at
  38           <http://www.arm.linux.org.uk/>.
  39
  40 config HAVE_PWM
  41         bool
  42
  43 config MIGHT_HAVE_PCI
  44         bool
  45
  46 config SYS_SUPPORTS_APM_EMULATION
  47         bool
  48
  49 config HAVE_SCHED_CLOCK
  50         bool
  51
  52 config GENERIC_GPIO
  53         bool
  54
  55 config ARCH_USES_GETTIMEOFFSET
  56         bool
  57         default n
  58
  59 config GENERIC_CLOCKEVENTS
  60         bool
  61
  62 config GENERIC_CLOCKEVENTS_BROADCAST
  63         bool
  64         depends on GENERIC_CLOCKEVENTS
  65         default y if SMP
  66
  67 config KTIME_SCALAR
  68         bool
  69         default y
  70
  71 config HAVE_TCM
  72         bool
  73         select GENERIC_ALLOCATOR
  74
  75 config HAVE_PROC_CPU
  76         bool
  77
  78 config NO_IOPORT
  79         bool
  80
  81 config EISA
  82         bool
  83         ---help---
  84           The Extended Industry Standard Architecture (EISA) bus was
  85           developed as an open alternative to the IBM MicroChannel bus.
  86
  87           The EISA bus provided some of the features of the IBM MicroChannel
  88           bus while maintaining backward compatibility with cards made for
  89           the older ISA bus.  The EISA bus saw limited use between 1988 and
  90           1995 when it was made obsolete by the PCI bus.
  91
  92           Say Y here if you are building a kernel for an EISA-based machine.
  93
  94           Otherwise, say N.
  95
  96 config SBUS
  97         bool
  98
  99 config MCA
 100         bool
 101         help
 102           MicroChannel Architecture is found in some IBM PS/2 machines and
 103           laptops.  It is a bus system similar to PCI or ISA. See
 104           <file:Documentation/mca.txt> (and especially the web page given
 105           there) before attempting to build an MCA bus kernel.
 106
 107 config STACKTRACE_SUPPORT
 108         bool
 109         default y
 110
 111 config HAVE_LATENCYTOP_SUPPORT
 112         bool
 113         depends on !SMP
 114         default y
 115
 116 config LOCKDEP_SUPPORT
 117         bool
 118         default y
 119
 120 config TRACE_IRQFLAGS_SUPPORT
 121         bool
 122         default y
 123
 124 config HARDIRQS_SW_RESEND
 125         bool
 126         default y
 127
 128 config GENERIC_IRQ_PROBE
 129         bool
 130         default y
 131
 132 config GENERIC_LOCKBREAK
 133         bool
 134         default y
 135         depends on SMP && PREEMPT
 136
 137 config RWSEM_GENERIC_SPINLOCK
 138         bool
 139         default y
 140
 141 config RWSEM_XCHGADD_ALGORITHM
 142         bool
 143
 144 config ARCH_HAS_ILOG2_U32
 145         bool
 146
 147 config ARCH_HAS_ILOG2_U64
 148         bool
 149
 150 config ARCH_HAS_CPUFREQ
 151         bool
 152         help
 153           Internal node to signify that the ARCH has CPUFREQ support
 154           and that the relevant menu configurations are displayed for
 155           it.
 156
 157 config ARCH_HAS_CPU_IDLE_WAIT
 158        def_bool y
 159
 160 config GENERIC_HWEIGHT
 161         bool
 162         default y
 163
 164 config GENERIC_CALIBRATE_DELAY
 165         bool
 166         default y
 167
 168 config ARCH_MAY_HAVE_PC_FDC
 169         bool
 170
 171 config ZONE_DMA
 172         bool
 173
 174 config NEED_DMA_MAP_STATE
 175        def_bool y
 176
 177 config GENERIC_ISA_DMA
 178         bool
 179
 180 config FIQ
 181         bool
 182
 183 config ARCH_MTD_XIP
 184         bool
 185
 186 config VECTORS_BASE
 187         hex
 188         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 189         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 190         default 0x00000000
 191         help
 192           The base address of exception vectors.
 193
 194 config ARM_PATCH_PHYS_VIRT
 195         bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
 196         depends on EXPERIMENTAL
 197         depends on !XIP_KERNEL && MMU
 198         depends on !ARCH_REALVIEW || !SPARSEMEM
 199         help
 200           Patch phys-to-virt translation functions at runtime according to
 201           the position of the kernel in system memory.
 202
 203           This can only be used with non-XIP with MMU kernels where
 204           the base of physical memory is at a 16MB boundary.
 205
 206 config ARM_PATCH_PHYS_VIRT_16BIT
 207         def_bool y
 208         depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
 209
 210 source "init/Kconfig"
 211
 212 source "kernel/Kconfig.freezer"
 213
 214 menu "System Type"
 215
 216 config MMU
 217         bool "MMU-based Paged Memory Management Support"
 218         default y
 219         help
 220           Select if you want MMU-based virtualised addressing space
 221           support by paged memory management. If unsure, say 'Y'.
 222
 223 #
 224 # The "ARM system type" choice list is ordered alphabetically by option
 225 # text.  Please add new entries in the option alphabetic order.
 226 #
 227 choice
 228         prompt "ARM system type"
 229         default ARCH_VERSATILE
 230
 231 config ARCH_INTEGRATOR
 232         bool "ARM Ltd. Integrator family"
 233         select ARM_AMBA
 234         select ARCH_HAS_CPUFREQ
 235         select CLKDEV_LOOKUP
 236         select ICST
 237         select GENERIC_CLOCKEVENTS
 238         select PLAT_VERSATILE
 239         select PLAT_VERSATILE_FPGA_IRQ
 240         help
 241           Support for ARM's Integrator platform.
 242
 243 config ARCH_REALVIEW
 244         bool "ARM Ltd. RealView family"
 245         select ARM_AMBA
 246         select CLKDEV_LOOKUP
 247         select ICST
 248         select GENERIC_CLOCKEVENTS
 249         select ARCH_WANT_OPTIONAL_GPIOLIB
 250         select PLAT_VERSATILE
 251         select PLAT_VERSATILE_CLCD
 252         select ARM_TIMER_SP804
 253         select GPIO_PL061 if GPIOLIB
 254         help
 255           This enables support for ARM Ltd RealView boards.
 256
 257 config ARCH_VERSATILE
 258         bool "ARM Ltd. Versatile family"
 259         select ARM_AMBA
 260         select ARM_VIC
 261         select CLKDEV_LOOKUP
 262         select ICST
 263         select GENERIC_CLOCKEVENTS
 264         select ARCH_WANT_OPTIONAL_GPIOLIB
 265         select PLAT_VERSATILE
 266         select PLAT_VERSATILE_CLCD
 267         select PLAT_VERSATILE_FPGA_IRQ
 268         select ARM_TIMER_SP804
 269         help
 270           This enables support for ARM Ltd Versatile board.
 271
 272 config ARCH_VEXPRESS
 273         bool "ARM Ltd. Versatile Express family"
 274         select ARCH_WANT_OPTIONAL_GPIOLIB
 275         select ARM_AMBA
 276         select ARM_TIMER_SP804
 277         select CLKDEV_LOOKUP
 278         select GENERIC_CLOCKEVENTS
 279         select HAVE_CLK
 280         select HAVE_PATA_PLATFORM
 281         select ICST
 282         select PLAT_VERSATILE
 283         select PLAT_VERSATILE_CLCD
 284         help
 285           This enables support for the ARM Ltd Versatile Express boards.
 286
 287 config ARCH_AT91
 288         bool "Atmel AT91"
 289         select ARCH_REQUIRE_GPIOLIB
 290         select HAVE_CLK
 291         help
 292           This enables support for systems based on the Atmel AT91RM9200,
 293           AT91SAM9 and AT91CAP9 processors.
 294
 295 config ARCH_BCMRING
 296         bool "Broadcom BCMRING"
 297         depends on MMU
 298         select CPU_V6
 299         select ARM_AMBA
 300         select ARM_TIMER_SP804
 301         select CLKDEV_LOOKUP
 302         select GENERIC_CLOCKEVENTS
 303         select ARCH_WANT_OPTIONAL_GPIOLIB
 304         help
 305           Support for Broadcom's BCMRing platform.
 306
 307 config ARCH_CLPS711X
 308         bool "Cirrus Logic CLPS711x/EP721x-based"
 309         select CPU_ARM720T
 310         select ARCH_USES_GETTIMEOFFSET
 311         help
 312           Support for Cirrus Logic 711x/721x based boards.
 313
 314 config ARCH_CNS3XXX
 315         bool "Cavium Networks CNS3XXX family"
 316         select CPU_V6
 317         select GENERIC_CLOCKEVENTS
 318         select ARM_GIC
 319         select MIGHT_HAVE_PCI
 320         select PCI_DOMAINS if PCI
 321         help
 322           Support for Cavium Networks CNS3XXX platform.
 323
 324 config ARCH_GEMINI
 325         bool "Cortina Systems Gemini"
 326         select CPU_FA526
 327         select ARCH_REQUIRE_GPIOLIB
 328         select ARCH_USES_GETTIMEOFFSET
 329         help
 330           Support for the Cortina Systems Gemini family SoCs
 331
 332 config ARCH_EBSA110
 333         bool "EBSA-110"
 334         select CPU_SA110
 335         select ISA
 336         select NO_IOPORT
 337         select ARCH_USES_GETTIMEOFFSET
 338         help
 339           This is an evaluation board for the StrongARM processor available
 340           from Digital. It has limited hardware on-board, including an
 341           Ethernet interface, two PCMCIA sockets, two serial ports and a
 342           parallel port.
 343
 344 config ARCH_EP93XX
 345         bool "EP93xx-based"
 346         select CPU_ARM920T
 347         select ARM_AMBA
 348         select ARM_VIC
 349         select CLKDEV_LOOKUP
 350         select ARCH_REQUIRE_GPIOLIB
 351         select ARCH_HAS_HOLES_MEMORYMODEL
 352         select ARCH_USES_GETTIMEOFFSET
 353         help
 354           This enables support for the Cirrus EP93xx series of CPUs.
 355
 356 config ARCH_FOOTBRIDGE
 357         bool "FootBridge"
 358         select CPU_SA110
 359         select FOOTBRIDGE
 360         select GENERIC_CLOCKEVENTS
 361         help
 362           Support for systems based on the DC21285 companion chip
 363           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 364
 365 config ARCH_MXC
 366         bool "Freescale MXC/iMX-based"
 367         select GENERIC_CLOCKEVENTS
 368         select ARCH_REQUIRE_GPIOLIB
 369         select CLKDEV_LOOKUP
 370         select CLKSRC_MMIO
 371         select HAVE_SCHED_CLOCK
 372         help
 373           Support for Freescale MXC/iMX-based family of processors
 374
 375 config ARCH_MXS
 376         bool "Freescale MXS-based"
 377         select GENERIC_CLOCKEVENTS
 378         select ARCH_REQUIRE_GPIOLIB
 379         select CLKDEV_LOOKUP
 380         select CLKSRC_MMIO
 381         help
 382           Support for Freescale MXS-based family of processors
 383
 384 config ARCH_STMP3XXX
 385         bool "Freescale STMP3xxx"
 386         select CPU_ARM926T
 387         select CLKDEV_LOOKUP
 388         select ARCH_REQUIRE_GPIOLIB
 389         select GENERIC_CLOCKEVENTS
 390         select USB_ARCH_HAS_EHCI
 391         help
 392           Support for systems based on the Freescale 3xxx CPUs.
 393
 394 config ARCH_NETX
 395         bool "Hilscher NetX based"
 396         select CLKSRC_MMIO
 397         select CPU_ARM926T
 398         select ARM_VIC
 399         select GENERIC_CLOCKEVENTS
 400         help
 401           This enables support for systems based on the Hilscher NetX Soc
 402
 403 config ARCH_H720X
 404         bool "Hynix HMS720x-based"
 405         select CPU_ARM720T
 406         select ISA_DMA_API
 407         select ARCH_USES_GETTIMEOFFSET
 408         help
 409           This enables support for systems based on the Hynix HMS720x
 410
 411 config ARCH_IOP13XX
 412         bool "IOP13xx-based"
 413         depends on MMU
 414         select CPU_XSC3
 415         select PLAT_IOP
 416         select PCI
 417         select ARCH_SUPPORTS_MSI
 418         select VMSPLIT_1G
 419         help
 420           Support for Intel's IOP13XX (XScale) family of processors.
 421
 422 config ARCH_IOP32X
 423         bool "IOP32x-based"
 424         depends on MMU
 425         select CPU_XSCALE
 426         select PLAT_IOP
 427         select PCI
 428         select ARCH_REQUIRE_GPIOLIB
 429         help
 430           Support for Intel's 80219 and IOP32X (XScale) family of
 431           processors.
 432
 433 config ARCH_IOP33X
 434         bool "IOP33x-based"
 435         depends on MMU
 436         select CPU_XSCALE
 437         select PLAT_IOP
 438         select PCI
 439         select ARCH_REQUIRE_GPIOLIB
 440         help
 441           Support for Intel's IOP33X (XScale) family of processors.
 442
 443 config ARCH_IXP23XX
 444         bool "IXP23XX-based"
 445         depends on MMU
 446         select CPU_XSC3
 447         select PCI
 448         select ARCH_USES_GETTIMEOFFSET
 449         help
 450           Support for Intel's IXP23xx (XScale) family of processors.
 451
 452 config ARCH_IXP2000
 453         bool "IXP2400/2800-based"
 454         depends on MMU
 455         select CPU_XSCALE
 456         select PCI
 457         select ARCH_USES_GETTIMEOFFSET
 458         help
 459           Support for Intel's IXP2400/2800 (XScale) family of processors.
 460
 461 config ARCH_IXP4XX
 462         bool "IXP4xx-based"
 463         depends on MMU
 464         select CLKSRC_MMIO
 465         select CPU_XSCALE
 466         select GENERIC_GPIO
 467         select GENERIC_CLOCKEVENTS
 468         select HAVE_SCHED_CLOCK
 469         select MIGHT_HAVE_PCI
 470         select DMABOUNCE if PCI
 471         help
 472           Support for Intel's IXP4XX (XScale) family of processors.
 473
 474 config ARCH_DOVE
 475         bool "Marvell Dove"
 476         select CPU_V6K
 477         select PCI
 478         select ARCH_REQUIRE_GPIOLIB
 479         select GENERIC_CLOCKEVENTS
 480         select PLAT_ORION
 481         help
 482           Support for the Marvell Dove SoC 88AP510
 483
 484 config ARCH_KIRKWOOD
 485         bool "Marvell Kirkwood"
 486         select CPU_FEROCEON
 487         select PCI
 488         select ARCH_REQUIRE_GPIOLIB
 489         select GENERIC_CLOCKEVENTS
 490         select PLAT_ORION
 491         help
 492           Support for the following Marvell Kirkwood series SoCs:
 493           88F6180, 88F6192 and 88F6281.
 494
 495 config ARCH_LOKI
 496         bool "Marvell Loki (88RC8480)"
 497         select CPU_FEROCEON
 498         select GENERIC_CLOCKEVENTS
 499         select PLAT_ORION
 500         help
 501           Support for the Marvell Loki (88RC8480) SoC.
 502
 503 config ARCH_LPC32XX
 504         bool "NXP LPC32XX"
 505         select CLKSRC_MMIO
 506         select CPU_ARM926T
 507         select ARCH_REQUIRE_GPIOLIB
 508         select HAVE_IDE
 509         select ARM_AMBA
 510         select USB_ARCH_HAS_OHCI
 511         select CLKDEV_LOOKUP
 512         select GENERIC_TIME
 513         select GENERIC_CLOCKEVENTS
 514         help
 515           Support for the NXP LPC32XX family of processors
 516
 517 config ARCH_MV78XX0
 518         bool "Marvell MV78xx0"
 519         select CPU_FEROCEON
 520         select PCI
 521         select ARCH_REQUIRE_GPIOLIB
 522         select GENERIC_CLOCKEVENTS
 523         select PLAT_ORION
 524         help
 525           Support for the following Marvell MV78xx0 series SoCs:
 526           MV781x0, MV782x0.
 527
 528 config ARCH_ORION5X
 529         bool "Marvell Orion"
 530         depends on MMU
 531         select CPU_FEROCEON
 532         select PCI
 533         select ARCH_REQUIRE_GPIOLIB
 534         select GENERIC_CLOCKEVENTS
 535         select PLAT_ORION
 536         help
 537           Support for the following Marvell Orion 5x series SoCs:
 538           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 539           Orion-2 (5281), Orion-1-90 (6183).
 540
 541 config ARCH_MMP
 542         bool "Marvell PXA168/910/MMP2"
 543         depends on MMU
 544         select ARCH_REQUIRE_GPIOLIB
 545         select CLKDEV_LOOKUP
 546         select GENERIC_CLOCKEVENTS
 547         select HAVE_SCHED_CLOCK
 548         select TICK_ONESHOT
 549         select PLAT_PXA
 550         select SPARSE_IRQ
 551         help
 552           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 553
 554 config ARCH_KS8695
 555         bool "Micrel/Kendin KS8695"
 556         select CPU_ARM922T
 557         select ARCH_REQUIRE_GPIOLIB
 558         select ARCH_USES_GETTIMEOFFSET
 559         help
 560           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 561           System-on-Chip devices.
 562
 563 config ARCH_NS9XXX
 564         bool "NetSilicon NS9xxx"
 565         select CPU_ARM926T
 566         select GENERIC_GPIO
 567         select GENERIC_CLOCKEVENTS
 568         select HAVE_CLK
 569         help
 570           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 571           System.
 572
 573           <http://www.digi.com/products/microprocessors/index.jsp>
 574
 575 config ARCH_W90X900
 576         bool "Nuvoton W90X900 CPU"
 577         select CPU_ARM926T
 578         select ARCH_REQUIRE_GPIOLIB
 579         select CLKDEV_LOOKUP
 580         select CLKSRC_MMIO
 581         select GENERIC_CLOCKEVENTS
 582         help
 583           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 584           At present, the w90x900 has been renamed nuc900, regarding
 585           the ARM series product line, you can login the following
 586           link address to know more.
 587
 588           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 589                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 590
 591 config ARCH_NUC93X
 592         bool "Nuvoton NUC93X CPU"
 593         select CPU_ARM926T
 594         select CLKDEV_LOOKUP
 595         help
 596           Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
 597           low-power and high performance MPEG-4/JPEG multimedia controller chip.
 598
 599 config ARCH_TEGRA
 600         bool "NVIDIA Tegra"
 601         select CLKDEV_LOOKUP
 602         select CLKSRC_MMIO
 603         select GENERIC_TIME
 604         select GENERIC_CLOCKEVENTS
 605         select GENERIC_GPIO
 606         select HAVE_CLK
 607         select HAVE_SCHED_CLOCK
 608         select ARCH_HAS_BARRIERS if CACHE_L2X0
 609         select ARCH_HAS_CPUFREQ
 610         help
 611           This enables support for NVIDIA Tegra based systems (Tegra APX,
 612           Tegra 6xx and Tegra 2 series).
 613
 614 config ARCH_PNX4008
 615         bool "Philips Nexperia PNX4008 Mobile"
 616         select CPU_ARM926T
 617         select CLKDEV_LOOKUP
 618         select ARCH_USES_GETTIMEOFFSET
 619         help
 620           This enables support for Philips PNX4008 mobile platform.
 621
 622 config ARCH_PXA
 623         bool "PXA2xx/PXA3xx-based"
 624         depends on MMU
 625         select ARCH_MTD_XIP
 626         select ARCH_HAS_CPUFREQ
 627         select CLKDEV_LOOKUP
 628         select CLKSRC_MMIO
 629         select ARCH_REQUIRE_GPIOLIB
 630         select GENERIC_CLOCKEVENTS
 631         select HAVE_SCHED_CLOCK
 632         select TICK_ONESHOT
 633         select PLAT_PXA
 634         select SPARSE_IRQ
 635         help
 636           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 637
 638 config ARCH_MSM
 639         bool "Qualcomm MSM"
 640         select HAVE_CLK
 641         select GENERIC_CLOCKEVENTS
 642         select ARCH_REQUIRE_GPIOLIB
 643         select CLKDEV_LOOKUP
 644         help
 645           Support for Qualcomm MSM/QSD based systems.  This runs on the
 646           apps processor of the MSM/QSD and depends on a shared memory
 647           interface to the modem processor which runs the baseband
 648           stack and controls some vital subsystems
 649           (clock and power control, etc).
 650
 651 config ARCH_SHMOBILE
 652         bool "Renesas SH-Mobile / R-Mobile"
 653         select HAVE_CLK
 654         select CLKDEV_LOOKUP
 655         select GENERIC_CLOCKEVENTS
 656         select NO_IOPORT
 657         select SPARSE_IRQ
 658         select MULTI_IRQ_HANDLER
 659         help
 660           Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
 661
 662 config ARCH_RPC
 663         bool "RiscPC"
 664         select ARCH_ACORN
 665         select FIQ
 666         select TIMER_ACORN
 667         select ARCH_MAY_HAVE_PC_FDC
 668         select HAVE_PATA_PLATFORM
 669         select ISA_DMA_API
 670         select NO_IOPORT
 671         select ARCH_SPARSEMEM_ENABLE
 672         select ARCH_USES_GETTIMEOFFSET
 673         help
 674           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 675           CD-ROM interface, serial and parallel port, and the floppy drive.
 676
 677 config ARCH_SA1100
 678         bool "SA1100-based"
 679         select CLKSRC_MMIO
 680         select CPU_SA1100
 681         select ISA
 682         select ARCH_SPARSEMEM_ENABLE
 683         select ARCH_MTD_XIP
 684         select ARCH_HAS_CPUFREQ
 685         select CPU_FREQ
 686         select GENERIC_CLOCKEVENTS
 687         select HAVE_CLK
 688         select HAVE_SCHED_CLOCK
 689         select TICK_ONESHOT
 690         select ARCH_REQUIRE_GPIOLIB
 691         help
 692           Support for StrongARM 11x0 based boards.
 693
 694 config ARCH_S3C2410
 695         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
 696         select GENERIC_GPIO
 697         select ARCH_HAS_CPUFREQ
 698         select HAVE_CLK
 699         select ARCH_USES_GETTIMEOFFSET
 700         select HAVE_S3C2410_I2C if I2C
 701         help
 702           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 703           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 704           the Samsung SMDK2410 development board (and derivatives).
 705
 706           Note, the S3C2416 and the S3C2450 are so close that they even share
 707           the same SoC ID code. This means that there is no separate machine
 708           directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
 709
 710 config ARCH_S3C64XX
 711         bool "Samsung S3C64XX"
 712         select PLAT_SAMSUNG
 713         select CPU_V6
 714         select ARM_VIC
 715         select HAVE_CLK
 716         select NO_IOPORT
 717         select ARCH_USES_GETTIMEOFFSET
 718         select ARCH_HAS_CPUFREQ
 719         select ARCH_REQUIRE_GPIOLIB
 720         select SAMSUNG_CLKSRC
 721         select SAMSUNG_IRQ_VIC_TIMER
 722         select SAMSUNG_IRQ_UART
 723         select S3C_GPIO_TRACK
 724         select S3C_GPIO_PULL_UPDOWN
 725         select S3C_GPIO_CFG_S3C24XX
 726         select S3C_GPIO_CFG_S3C64XX
 727         select S3C_DEV_NAND
 728         select USB_ARCH_HAS_OHCI
 729         select SAMSUNG_GPIOLIB_4BIT
 730         select HAVE_S3C2410_I2C if I2C
 731         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 732         help
 733           Samsung S3C64XX series based systems
 734
 735 config ARCH_S5P64X0
 736         bool "Samsung S5P6440 S5P6450"
 737         select CPU_V6
 738         select GENERIC_GPIO
 739         select HAVE_CLK
 740         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 741         select GENERIC_CLOCKEVENTS
 742         select HAVE_SCHED_CLOCK
 743         select HAVE_S3C2410_I2C if I2C
 744         select HAVE_S3C_RTC if RTC_CLASS
 745         help
 746           Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
 747           SMDK6450.
 748
 749 config ARCH_S5P6442
 750         bool "Samsung S5P6442"
 751         select CPU_V6
 752         select GENERIC_GPIO
 753         select HAVE_CLK
 754         select ARCH_USES_GETTIMEOFFSET
 755         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 756         help
 757           Samsung S5P6442 CPU based systems
 758
 759 config ARCH_S5PC100
 760         bool "Samsung S5PC100"
 761         select GENERIC_GPIO
 762         select HAVE_CLK
 763         select CPU_V7
 764         select ARM_L1_CACHE_SHIFT_6
 765         select ARCH_USES_GETTIMEOFFSET
 766         select HAVE_S3C2410_I2C if I2C
 767         select HAVE_S3C_RTC if RTC_CLASS
 768         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 769         help
 770           Samsung S5PC100 series based systems
 771
 772 config ARCH_S5PV210
 773         bool "Samsung S5PV210/S5PC110"
 774         select CPU_V7
 775         select ARCH_SPARSEMEM_ENABLE
 776         select GENERIC_GPIO
 777         select HAVE_CLK
 778         select ARM_L1_CACHE_SHIFT_6
 779         select ARCH_HAS_CPUFREQ
 780         select GENERIC_CLOCKEVENTS
 781         select HAVE_SCHED_CLOCK
 782         select HAVE_S3C2410_I2C if I2C
 783         select HAVE_S3C_RTC if RTC_CLASS
 784         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 785         help
 786           Samsung S5PV210/S5PC110 series based systems
 787
 788 config ARCH_EXYNOS4
 789         bool "Samsung EXYNOS4"
 790         select CPU_V7
 791         select ARCH_SPARSEMEM_ENABLE
 792         select GENERIC_GPIO
 793         select HAVE_CLK
 794         select ARCH_HAS_CPUFREQ
 795         select GENERIC_CLOCKEVENTS
 796         select HAVE_S3C_RTC if RTC_CLASS
 797         select HAVE_S3C2410_I2C if I2C
 798         select HAVE_S3C2410_WATCHDOG if WATCHDOG
 799         help
 800           Samsung EXYNOS4 series based systems
 801
 802 config ARCH_SHARK
 803         bool "Shark"
 804         select CPU_SA110
 805         select ISA
 806         select ISA_DMA
 807         select ZONE_DMA
 808         select PCI
 809         select ARCH_USES_GETTIMEOFFSET
 810         help
 811           Support for the StrongARM based Digital DNARD machine, also known
 812           as "Shark" (<http://www.shark-linux.de/shark.html>).
 813
 814 config ARCH_TCC_926
 815         bool "Telechips TCC ARM926-based systems"
 816         select CLKSRC_MMIO
 817         select CPU_ARM926T
 818         select HAVE_CLK
 819         select CLKDEV_LOOKUP
 820         select GENERIC_CLOCKEVENTS
 821         help
 822           Support for Telechips TCC ARM926-based systems.
 823
 824 config ARCH_U300
 825         bool "ST-Ericsson U300 Series"
 826         depends on MMU
 827         select CLKSRC_MMIO
 828         select CPU_ARM926T
 829         select HAVE_SCHED_CLOCK
 830         select HAVE_TCM
 831         select ARM_AMBA
 832         select ARM_VIC
 833         select GENERIC_CLOCKEVENTS
 834         select CLKDEV_LOOKUP
 835         select GENERIC_GPIO
 836         help
 837           Support for ST-Ericsson U300 series mobile platforms.
 838
 839 config ARCH_U8500
 840         bool "ST-Ericsson U8500 Series"
 841         select CPU_V7
 842         select ARM_AMBA
 843         select GENERIC_CLOCKEVENTS
 844         select CLKDEV_LOOKUP
 845         select ARCH_REQUIRE_GPIOLIB
 846         select ARCH_HAS_CPUFREQ
 847         help
 848           Support for ST-Ericsson's Ux500 architecture
 849
 850 config ARCH_NOMADIK
 851         bool "STMicroelectronics Nomadik"
 852         select ARM_AMBA
 853         select ARM_VIC
 854         select CPU_ARM926T
 855         select CLKDEV_LOOKUP
 856         select GENERIC_CLOCKEVENTS
 857         select ARCH_REQUIRE_GPIOLIB
 858         help
 859           Support for the Nomadik platform by ST-Ericsson
 860
 861 config ARCH_DAVINCI
 862         bool "TI DaVinci"
 863         select GENERIC_CLOCKEVENTS
 864         select ARCH_REQUIRE_GPIOLIB
 865         select ZONE_DMA
 866         select HAVE_IDE
 867         select CLKDEV_LOOKUP
 868         select GENERIC_ALLOCATOR
 869         select ARCH_HAS_HOLES_MEMORYMODEL
 870         help
 871           Support for TI's DaVinci platform.
 872
 873 config ARCH_OMAP
 874         bool "TI OMAP"
 875         select HAVE_CLK
 876         select ARCH_REQUIRE_GPIOLIB
 877         select ARCH_HAS_CPUFREQ
 878         select GENERIC_CLOCKEVENTS
 879         select HAVE_SCHED_CLOCK
 880         select ARCH_HAS_HOLES_MEMORYMODEL
 881         help
 882           Support for TI's OMAP platform (OMAP1/2/3/4).
 883
 884 config PLAT_SPEAR
 885         bool "ST SPEAr"
 886         select ARM_AMBA
 887         select ARCH_REQUIRE_GPIOLIB
 888         select CLKDEV_LOOKUP
 889         select CLKSRC_MMIO
 890         select GENERIC_CLOCKEVENTS
 891         select HAVE_CLK
 892         help
 893           Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
 894
 895 config ARCH_VT8500
 896         bool "VIA/WonderMedia 85xx"
 897         select CPU_ARM926T
 898         select GENERIC_GPIO
 899         select ARCH_HAS_CPUFREQ
 900         select GENERIC_CLOCKEVENTS
 901         select ARCH_REQUIRE_GPIOLIB
 902         select HAVE_PWM
 903         help
 904           Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
 905 endchoice
 906
 907 #
 908 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 909 # Kconfigs may be included either alphabetically (according to the
 910 # plat- suffix) or along side the corresponding mach-* source.
 911 #
 912 source "arch/arm/mach-at91/Kconfig"
 913
 914 source "arch/arm/mach-bcmring/Kconfig"
 915
 916 source "arch/arm/mach-clps711x/Kconfig"
 917
 918 source "arch/arm/mach-cns3xxx/Kconfig"
 919
 920 source "arch/arm/mach-davinci/Kconfig"
 921
 922 source "arch/arm/mach-dove/Kconfig"
 923
 924 source "arch/arm/mach-ep93xx/Kconfig"
 925
 926 source "arch/arm/mach-footbridge/Kconfig"
 927
 928 source "arch/arm/mach-gemini/Kconfig"
 929
 930 source "arch/arm/mach-h720x/Kconfig"
 931
 932 source "arch/arm/mach-integrator/Kconfig"
 933
 934 source "arch/arm/mach-iop32x/Kconfig"
 935
 936 source "arch/arm/mach-iop33x/Kconfig"
 937
 938 source "arch/arm/mach-iop13xx/Kconfig"
 939
 940 source "arch/arm/mach-ixp4xx/Kconfig"
 941
 942 source "arch/arm/mach-ixp2000/Kconfig"
 943
 944 source "arch/arm/mach-ixp23xx/Kconfig"
 945
 946 source "arch/arm/mach-kirkwood/Kconfig"
 947
 948 source "arch/arm/mach-ks8695/Kconfig"
 949
 950 source "arch/arm/mach-loki/Kconfig"
 951
 952 source "arch/arm/mach-lpc32xx/Kconfig"
 953
 954 source "arch/arm/mach-msm/Kconfig"
 955
 956 source "arch/arm/mach-mv78xx0/Kconfig"
 957
 958 source "arch/arm/plat-mxc/Kconfig"
 959
 960 source "arch/arm/mach-mxs/Kconfig"
 961
 962 source "arch/arm/mach-netx/Kconfig"
 963
 964 source "arch/arm/mach-nomadik/Kconfig"
 965 source "arch/arm/plat-nomadik/Kconfig"
 966
 967 source "arch/arm/mach-ns9xxx/Kconfig"
 968
 969 source "arch/arm/mach-nuc93x/Kconfig"
 970
 971 source "arch/arm/plat-omap/Kconfig"
 972
 973 source "arch/arm/mach-omap1/Kconfig"
 974
 975 source "arch/arm/mach-omap2/Kconfig"
 976
 977 source "arch/arm/mach-orion5x/Kconfig"
 978
 979 source "arch/arm/mach-pxa/Kconfig"
 980 source "arch/arm/plat-pxa/Kconfig"
 981
 982 source "arch/arm/mach-mmp/Kconfig"
 983
 984 source "arch/arm/mach-realview/Kconfig"
 985
 986 source "arch/arm/mach-sa1100/Kconfig"
 987
 988 source "arch/arm/plat-samsung/Kconfig"
 989 source "arch/arm/plat-s3c24xx/Kconfig"
 990 source "arch/arm/plat-s5p/Kconfig"
 991
 992 source "arch/arm/plat-spear/Kconfig"
 993
 994 source "arch/arm/plat-tcc/Kconfig"
 995
 996 if ARCH_S3C2410
 997 source "arch/arm/mach-s3c2400/Kconfig"
 998 source "arch/arm/mach-s3c2410/Kconfig"
 999 source "arch/arm/mach-s3c2412/Kconfig"
1000 source "arch/arm/mach-s3c2416/Kconfig"
1001 source "arch/arm/mach-s3c2440/Kconfig"
1002 source "arch/arm/mach-s3c2443/Kconfig"
1003 endif
1004
1005 if ARCH_S3C64XX
1006 source "arch/arm/mach-s3c64xx/Kconfig"
1007 endif
1008
1009 source "arch/arm/mach-s5p64x0/Kconfig"
1010
1011 source "arch/arm/mach-s5p6442/Kconfig"
1012
1013 source "arch/arm/mach-s5pc100/Kconfig"
1014
1015 source "arch/arm/mach-s5pv210/Kconfig"
1016
1017 source "arch/arm/mach-exynos4/Kconfig"
1018
1019 source "arch/arm/mach-shmobile/Kconfig"
1020
1021 source "arch/arm/plat-stmp3xxx/Kconfig"
1022
1023 source "arch/arm/mach-tegra/Kconfig"
1024
1025 source "arch/arm/mach-u300/Kconfig"
1026
1027 source "arch/arm/mach-ux500/Kconfig"
1028
1029 source "arch/arm/mach-versatile/Kconfig"
1030
1031 source "arch/arm/mach-vexpress/Kconfig"
1032 source "arch/arm/plat-versatile/Kconfig"
1033
1034 source "arch/arm/mach-vt8500/Kconfig"
1035
1036 source "arch/arm/mach-w90x900/Kconfig"
1037
1038 # Definitions to make life easier
1039 config ARCH_ACORN
1040         bool
1041
1042 config PLAT_IOP
1043         bool
1044         select GENERIC_CLOCKEVENTS
1045         select HAVE_SCHED_CLOCK
1046
1047 config PLAT_ORION
1048         bool
1049         select CLKSRC_MMIO
1050         select HAVE_SCHED_CLOCK
1051
1052 config PLAT_PXA
1053         bool
1054
1055 config PLAT_VERSATILE
1056         bool
1057
1058 config ARM_TIMER_SP804
1059         bool
1060         select CLKSRC_MMIO
1061
1062 source arch/arm/mm/Kconfig
1063
1064 config IWMMXT
1065         bool "Enable iWMMXt support"
1066         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1067         default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
1068         help
1069           Enable support for iWMMXt context switching at run time if
1070           running on a CPU that supports it.
1071
1072 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
1073 config XSCALE_PMU
1074         bool
1075         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
1076         default y
1077
1078 config CPU_HAS_PMU
1079         depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
1080                    (!ARCH_OMAP3 || OMAP3_EMU)
1081         default y
1082         bool
1083
1084 config MULTI_IRQ_HANDLER
1085         bool
1086         help
1087           Allow each machine to specify it's own IRQ handler at run time.
1088
1089 if !MMU
1090 source "arch/arm/Kconfig-nommu"
1091 endif
1092
1093 config ARM_ERRATA_411920
1094         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1095         depends on CPU_V6 || CPU_V6K
1096         help
1097           Invalidation of the Instruction Cache operation can
1098           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1099           It does not affect the MPCore. This option enables the ARM Ltd.
1100           recommended workaround.
1101
1102 config ARM_ERRATA_430973
1103         bool "ARM errata: Stale prediction on replaced interworking branch"
1104         depends on CPU_V7
1105         help
1106           This option enables the workaround for the 430973 Cortex-A8
1107           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1108           interworking branch is replaced with another code sequence at the
1109           same virtual address, whether due to self-modifying code or virtual
1110           to physical address re-mapping, Cortex-A8 does not recover from the
1111           stale interworking branch prediction. This results in Cortex-A8
1112           executing the new code sequence in the incorrect ARM or Thumb state.
1113           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1114           and also flushes the branch target cache at every context switch.
1115           Note that setting specific bits in the ACTLR register may not be
1116           available in non-secure mode.
1117
1118 config ARM_ERRATA_458693
1119         bool "ARM errata: Processor deadlock when a false hazard is created"
1120         depends on CPU_V7
1121         help
1122           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1123           erratum. For very specific sequences of memory operations, it is
1124           possible for a hazard condition intended for a cache line to instead
1125           be incorrectly associated with a different cache line. This false
1126           hazard might then cause a processor deadlock. The workaround enables
1127           the L1 caching of the NEON accesses and disables the PLD instruction
1128           in the ACTLR register. Note that setting specific bits in the ACTLR
1129           register may not be available in non-secure mode.
1130
1131 config ARM_ERRATA_460075
1132         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1133         depends on CPU_V7
1134         help
1135           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1136           erratum. Any asynchronous access to the L2 cache may encounter a
1137           situation in which recent store transactions to the L2 cache are lost
1138           and overwritten with stale memory contents from external memory. The
1139           workaround disables the write-allocate mode for the L2 cache via the
1140           ACTLR register. Note that setting specific bits in the ACTLR register
1141           may not be available in non-secure mode.
1142
1143 config ARM_ERRATA_742230
1144         bool "ARM errata: DMB operation may be faulty"
1145         depends on CPU_V7 && SMP
1146         help
1147           This option enables the workaround for the 742230 Cortex-A9
1148           (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
1149           between two write operations may not ensure the correct visibility
1150           ordering of the two writes. This workaround sets a specific bit in
1151           the diagnostic register of the Cortex-A9 which causes the DMB
1152           instruction to behave as a DSB, ensuring the correct behaviour of
1153           the two writes.
1154
1155 config ARM_ERRATA_742231
1156         bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1157         depends on CPU_V7 && SMP
1158         help
1159           This option enables the workaround for the 742231 Cortex-A9
1160           (r2p0..r2p2) erratum. Under certain conditions, specific to the
1161           Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1162           accessing some data located in the same cache line, may get corrupted
1163           data due to bad handling of the address hazard when the line gets
1164           replaced from one of the CPUs at the same time as another CPU is
1165           accessing it. This workaround sets specific bits in the diagnostic
1166           register of the Cortex-A9 which reduces the linefill issuing
1167           capabilities of the processor.
1168
1169 config PL310_ERRATA_588369
1170         bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1171         depends on CACHE_L2X0
1172         help
1173            The PL310 L2 cache controller implements three types of Clean &
1174            Invalidate maintenance operations: by Physical Address
1175            (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1176            They are architecturally defined to behave as the execution of a
1177            clean operation followed immediately by an invalidate operation,
1178            both performing to the same memory location. This functionality
1179            is not correctly implemented in PL310 as clean lines are not
1180            invalidated as a result of these operations.
1181
1182 config ARM_ERRATA_720789
1183         bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1184         depends on CPU_V7 && SMP
1185         help
1186           This option enables the workaround for the 720789 Cortex-A9 (prior to
1187           r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1188           broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1189           As a consequence of this erratum, some TLB entries which should be
1190           invalidated are not, resulting in an incoherency in the system page
1191           tables. The workaround changes the TLB flushing routines to invalidate
1192           entries regardless of the ASID.
1193
1194 config PL310_ERRATA_727915
1195         bool "Background Clean & Invalidate by Way operation can cause data corruption"
1196         depends on CACHE_L2X0
1197         help
1198           PL310 implements the Clean & Invalidate by Way L2 cache maintenance
1199           operation (offset 0x7FC). This operation runs in background so that
1200           PL310 can handle normal accesses while it is in progress. Under very
1201           rare circumstances, due to this erratum, write data can be lost when
1202           PL310 treats a cacheable write transaction during a Clean &
1203           Invalidate by Way operation.
1204
1205 config ARM_ERRATA_743622
1206         bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1207         depends on CPU_V7
1208         help
1209           This option enables the workaround for the 743622 Cortex-A9
1210           (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1211           optimisation in the Cortex-A9 Store Buffer may lead to data
1212           corruption. This workaround sets a specific bit in the diagnostic
1213           register of the Cortex-A9 which disables the Store Buffer
1214           optimisation, preventing the defect from occurring. This has no
1215           visible impact on the overall performance or power consumption of the
1216           processor.
1217
1218 config ARM_ERRATA_751472
1219         bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1220         depends on CPU_V7 && SMP
1221         help
1222           This option enables the workaround for the 751472 Cortex-A9 (prior
1223           to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
1224           completion of a following broadcasted operation if the second
1225           operation is received by a CPU before the ICIALLUIS has completed,
1226           potentially leading to corrupted entries in the cache or TLB.
1227
1228 config ARM_ERRATA_753970
1229         bool "ARM errata: cache sync operation may be faulty"
1230         depends on CACHE_PL310
1231         help
1232           This option enables the workaround for the 753970 PL310 (r3p0) erratum.
1233
1234           Under some condition the effect of cache sync operation on
1235           the store buffer still remains when the operation completes.
1236           This means that the store buffer is always asked to drain and
1237           this prevents it from merging any further writes. The workaround
1238           is to replace the normal offset of cache sync operation (0x730)
1239           by another offset targeting an unmapped PL310 register 0x740.
1240           This has the same effect as the cache sync operation: store buffer
1241           drain and waiting for all buffers empty.
1242
1243 config ARM_ERRATA_754322
1244         bool "ARM errata: possible faulty MMU translations following an ASID switch"
1245         depends on CPU_V7
1246         help
1247           This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1248           r3p*) erratum. A speculative memory access may cause a page table walk
1249           which starts prior to an ASID switch but completes afterwards. This
1250           can populate the micro-TLB with a stale entry which may be hit with
1251           the new ASID. This workaround places two dsb instructions in the mm
1252           switching code so that no page table walks can cross the ASID switch.
1253
1254 config ARM_ERRATA_754327
1255         bool "ARM errata: no automatic Store Buffer drain"
1256         depends on CPU_V7 && SMP
1257         help
1258           This option enables the workaround for the 754327 Cortex-A9 (prior to
1259           r2p0) erratum. The Store Buffer does not have any automatic draining
1260           mechanism and therefore a livelock may occur if an external agent
1261           continuously polls a memory location waiting to observe an update.
1262           This workaround defines cpu_relax() as smp_mb(), preventing correctly
1263           written polling loops from denying visibility of updates to memory.
1264
1265 endmenu
1266
1267 source "arch/arm/common/Kconfig"
1268
1269 menu "Bus support"
1270
1271 config ARM_AMBA
1272         bool
1273
1274 config ISA
1275         bool
1276         help
1277           Find out whether you have ISA slots on your motherboard.  ISA is the
1278           name of a bus system, i.e. the way the CPU talks to the other stuff
1279           inside your box.  Other bus systems are PCI, EISA, MicroChannel
1280           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
1281           newer boards don't support it.  If you have ISA, say Y, otherwise N.
1282
1283 # Select ISA DMA controller support
1284 config ISA_DMA
1285         bool
1286         select ISA_DMA_API
1287
1288 # Select ISA DMA interface
1289 config ISA_DMA_API
1290         bool
1291
1292 config PCI
1293         bool "PCI support" if MIGHT_HAVE_PCI
1294         help
1295           Find out whether you have a PCI motherboard. PCI is the name of a
1296           bus system, i.e. the way the CPU talks to the other stuff inside
1297           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1298           VESA. If you have PCI, say Y, otherwise N.
1299
1300 config PCI_DOMAINS
1301         bool
1302         depends on PCI
1303
1304 config PCI_NANOENGINE
1305         bool "BSE nanoEngine PCI support"
1306         depends on SA1100_NANOENGINE
1307         help
1308           Enable PCI on the BSE nanoEngine board.
1309
1310 config PCI_SYSCALL
1311         def_bool PCI
1312
1313 # Select the host bridge type
1314 config PCI_HOST_VIA82C505
1315         bool
1316         depends on PCI && ARCH_SHARK
1317         default y
1318
1319 config PCI_HOST_ITE8152
1320         bool
1321         depends on PCI && MACH_ARMCORE
1322         default y
1323         select DMABOUNCE
1324
1325 source "drivers/pci/Kconfig"
1326
1327 source "drivers/pcmcia/Kconfig"
1328
1329 endmenu
1330
1331 menu "Kernel Features"
1332
1333 source "kernel/time/Kconfig"
1334
1335 config SMP
1336         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1337         depends on EXPERIMENTAL
1338         depends on CPU_V6K || CPU_V7
1339         depends on GENERIC_CLOCKEVENTS
1340         depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1341                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1342                  ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1343                  ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
1344         select USE_GENERIC_SMP_HELPERS
1345         select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
1346         help
1347           This enables support for systems with more than one CPU. If you have
1348           a system with only one CPU, like most personal computers, say N. If
1349           you have a system with more than one CPU, say Y.
1350
1351           If you say N here, the kernel will run on single and multiprocessor
1352           machines, but will use only one CPU of a multiprocessor machine. If
1353           you say Y here, the kernel will run on many, but not all, single
1354           processor machines. On a single processor machine, the kernel will
1355           run faster if you say N here.
1356
1357           See also <file:Documentation/i386/IO-APIC.txt>,
1358           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1359           <http://tldp.org/HOWTO/SMP-HOWTO.html>.
1360
1361           If you don't know what to do here, say N.
1362
1363 config SMP_ON_UP
1364         bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1365         depends on EXPERIMENTAL
1366         depends on SMP && !XIP_KERNEL
1367         default y
1368         help
1369           SMP kernels contain instructions which fail on non-SMP processors.
1370           Enabling this option allows the kernel to modify itself to make
1371           these instructions safe.  Disabling it allows about 1K of space
1372           savings.
1373
1374           If you don't know what to do here, say Y.
1375
1376 config HAVE_ARM_SCU
1377         bool
1378         depends on SMP
1379         help
1380           This option enables support for the ARM system coherency unit
1381
1382 config HAVE_ARM_TWD
1383         bool
1384         depends on SMP
1385         select TICK_ONESHOT
1386         help
1387           This options enables support for the ARM timer and watchdog unit
1388
1389 choice
1390         prompt "Memory split"
1391         default VMSPLIT_3G
1392         help
1393           Select the desired split between kernel and user memory.
1394
1395           If you are not absolutely sure what you are doing, leave this
1396           option alone!
1397
1398         config VMSPLIT_3G
1399                 bool "3G/1G user/kernel split"
1400         config VMSPLIT_2G
1401                 bool "2G/2G user/kernel split"
1402         config VMSPLIT_1G
1403                 bool "1G/3G user/kernel split"
1404 endchoice
1405
1406 config PAGE_OFFSET
1407         hex
1408         default 0x40000000 if VMSPLIT_1G
1409         default 0x80000000 if VMSPLIT_2G
1410         default 0xC0000000
1411
1412 config NR_CPUS
1413         int "Maximum number of CPUs (2-32)"
1414         range 2 32
1415         depends on SMP
1416         default "4"
1417
1418 config HOTPLUG_CPU
1419         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1420         depends on SMP && HOTPLUG && EXPERIMENTAL
1421         depends on !ARCH_MSM
1422         help
1423           Say Y here to experiment with turning CPUs off and on.  CPUs
1424           can be controlled through /sys/devices/system/cpu.
1425
1426 config LOCAL_TIMERS
1427         bool "Use local timer interrupts"
1428         depends on SMP
1429         default y
1430         select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
1431         help
1432           Enable support for local timers on SMP platforms, rather then the
1433           legacy IPI broadcast method.  Local timers allows the system
1434           accounting to be spread across the timer interval, preventing a
1435           "thundering herd" at every timer tick.
1436
1437 source kernel/Kconfig.preempt
1438
1439 config HZ
1440         int
1441         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
1442                 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_EXYNOS4
1443         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1444         default AT91_TIMER_HZ if ARCH_AT91
1445         default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1446         default 100
1447
1448 config THUMB2_KERNEL
1449         bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
1450         depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
1451         select AEABI
1452         select ARM_ASM_UNIFIED
1453         help
1454           By enabling this option, the kernel will be compiled in
1455           Thumb-2 mode. A compiler/assembler that understand the unified
1456           ARM-Thumb syntax is needed.
1457
1458           If unsure, say N.
1459
1460 config THUMB2_AVOID_R_ARM_THM_JUMP11
1461         bool "Work around buggy Thumb-2 short branch relocations in gas"
1462         depends on THUMB2_KERNEL && MODULES
1463         default y
1464         help
1465           Various binutils versions can resolve Thumb-2 branches to
1466           locally-defined, preemptible global symbols as short-range "b.n"
1467           branch instructions.
1468
1469           This is a problem, because there's no guarantee the final
1470           destination of the symbol, or any candidate locations for a
1471           trampoline, are within range of the branch.  For this reason, the
1472           kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
1473           relocation in modules at all, and it makes little sense to add
1474           support.
1475
1476           The symptom is that the kernel fails with an "unsupported
1477           relocation" error when loading some modules.
1478
1479           Until fixed tools are available, passing
1480           -fno-optimize-sibling-calls to gcc should prevent gcc generating
1481           code which hits this problem, at the cost of a bit of extra runtime
1482           stack usage in some cases.
1483
1484           The problem is described in more detail at:
1485               https://bugs.launchpad.net/binutils-linaro/+bug/725126
1486
1487           Only Thumb-2 kernels are affected.
1488
1489           Unless you are sure your tools don't have this problem, say Y.
1490
1491 config ARM_ASM_UNIFIED
1492         bool
1493
1494 config AEABI
1495         bool "Use the ARM EABI to compile the kernel"
1496         help
1497           This option allows for the kernel to be compiled using the latest
1498           ARM ABI (aka EABI).  This is only useful if you are using a user
1499           space environment that is also compiled with EABI.
1500
1501           Since there are major incompatibilities between the legacy ABI and
1502           EABI, especially with regard to structure member alignment, this
1503           option also changes the kernel syscall calling convention to
1504           disambiguate both ABIs and allow for backward compatibility support
1505           (selected with CONFIG_OABI_COMPAT).
1506
1507           To use this you need GCC version 4.0.0 or later.
1508
1509 config OABI_COMPAT
1510         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1511         depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
1512         default y
1513         help
1514           This option preserves the old syscall interface along with the
1515           new (ARM EABI) one. It also provides a compatibility layer to
1516           intercept syscalls that have structure arguments which layout
1517           in memory differs between the legacy ABI and the new ARM EABI
1518           (only for non "thumb" binaries). This option adds a tiny
1519           overhead to all syscalls and produces a slightly larger kernel.
1520           If you know you'll be using only pure EABI user space then you
1521           can say N here. If this option is not selected and you attempt
1522           to execute a legacy ABI binary then the result will be
1523           UNPREDICTABLE (in fact it can be predicted that it won't work
1524           at all). If in doubt say Y.
1525
1526 config ARCH_HAS_HOLES_MEMORYMODEL
1527         bool
1528
1529 config ARCH_SPARSEMEM_ENABLE
1530         bool
1531
1532 config ARCH_SPARSEMEM_DEFAULT
1533         def_bool ARCH_SPARSEMEM_ENABLE
1534
1535 config ARCH_SELECT_MEMORY_MODEL
1536         def_bool ARCH_SPARSEMEM_ENABLE
1537
1538 config HIGHMEM
1539         bool "High Memory Support (EXPERIMENTAL)"
1540         depends on MMU && EXPERIMENTAL
1541         help
1542           The address space of ARM processors is only 4 Gigabytes large
1543           and it has to accommodate user address space, kernel address
1544           space as well as some memory mapped IO. That means that, if you
1545           have a large amount of physical memory and/or IO, not all of the
1546           memory can be "permanently mapped" by the kernel. The physical
1547           memory that is not permanently mapped is called "high memory".
1548
1549           Depending on the selected kernel/user memory split, minimum
1550           vmalloc space and actual amount of RAM, you may not need this
1551           option which should result in a slightly faster kernel.
1552
1553           If unsure, say n.
1554
1555 config HIGHPTE
1556         bool "Allocate 2nd-level pagetables from highmem"
1557         depends on HIGHMEM
1558
1559 config HW_PERF_EVENTS
1560         bool "Enable hardware performance counter support for perf events"
1561         depends on PERF_EVENTS && CPU_HAS_PMU
1562         default y
1563         help
1564           Enable hardware performance counter support for perf events. If
1565           disabled, perf events will use software events only.
1566
1567 source "mm/Kconfig"
1568
1569 config FORCE_MAX_ZONEORDER
1570         int "Maximum zone order" if ARCH_SHMOBILE
1571         range 11 64 if ARCH_SHMOBILE
1572         default "9" if SA1111
1573         default "11"
1574         help
1575           The kernel memory allocator divides physically contiguous memory
1576           blocks into "zones", where each zone is a power of two number of
1577           pages.  This option selects the largest power of two that the kernel
1578           keeps in the memory allocator.  If you need to allocate very large
1579           blocks of physically contiguous memory, then you may need to
1580           increase this value.
1581
1582           This config option is actually maximum order plus one. For example,
1583           a value of 11 means that the largest free memory block is 2^10 pages.
1584
1585 config LEDS
1586         bool "Timer and CPU usage LEDs"
1587         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1588                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1589                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1590                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1591                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1592                    ARCH_AT91 || ARCH_DAVINCI || \
1593                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1594         help
1595           If you say Y here, the LEDs on your machine will be used
1596           to provide useful information about your current system status.
1597
1598           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1599           be able to select which LEDs are active using the options below. If
1600           you are compiling a kernel for the EBSA-110 or the LART however, the
1601           red LED will simply flash regularly to indicate that the system is
1602           still functional. It is safe to say Y here if you have a CATS
1603           system, but the driver will do nothing.
1604
1605 config LEDS_TIMER
1606         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1607                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1608                             || MACH_OMAP_PERSEUS2
1609         depends on LEDS
1610         depends on !GENERIC_CLOCKEVENTS
1611         default y if ARCH_EBSA110
1612         help
1613           If you say Y here, one of the system LEDs (the green one on the
1614           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1615           will flash regularly to indicate that the system is still
1616           operational. This is mainly useful to kernel hackers who are
1617           debugging unstable kernels.
1618
1619           The LART uses the same LED for both Timer LED and CPU usage LED
1620           functions. You may choose to use both, but the Timer LED function
1621           will overrule the CPU usage LED.
1622
1623 config LEDS_CPU
1624         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1625                         !ARCH_OMAP) \
1626                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1627                         || MACH_OMAP_PERSEUS2
1628         depends on LEDS
1629         help
1630           If you say Y here, the red LED will be used to give a good real
1631           time indication of CPU usage, by lighting whenever the idle task
1632           is not currently executing.
1633
1634           The LART uses the same LED for both Timer LED and CPU usage LED
1635           functions. You may choose to use both, but the Timer LED function
1636           will overrule the CPU usage LED.
1637
1638 config ALIGNMENT_TRAP
1639         bool
1640         depends on CPU_CP15_MMU
1641         default y if !ARCH_EBSA110
1642         select HAVE_PROC_CPU if PROC_FS
1643         help
1644           ARM processors cannot fetch/store information which is not
1645           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1646           address divisible by 4. On 32-bit ARM processors, these non-aligned
1647           fetch/store instructions will be emulated in software if you say
1648           here, which has a severe performance impact. This is necessary for
1649           correct operation of some network protocols. With an IP-only
1650           configuration it is safe to say N, otherwise say Y.
1651
1652 config UACCESS_WITH_MEMCPY
1653         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1654         depends on MMU && EXPERIMENTAL
1655         default y if CPU_FEROCEON
1656         help
1657           Implement faster copy_to_user and clear_user methods for CPU
1658           cores where a 8-word STM instruction give significantly higher
1659           memory write throughput than a sequence of individual 32bit stores.
1660
1661           A possible side effect is a slight increase in scheduling latency
1662           between threads sharing the same address space if they invoke
1663           such copy operations with large buffers.
1664
1665           However, if the CPU data cache is using a write-allocate mode,
1666           this option is unlikely to provide any performance gain.
1667
1668 config SECCOMP
1669         bool
1670         prompt "Enable seccomp to safely compute untrusted bytecode"
1671         ---help---
1672           This kernel feature is useful for number crunching applications
1673           that may need to compute untrusted bytecode during their
1674           execution. By using pipes or other transports made available to
1675           the process as file descriptors supporting the read/write
1676           syscalls, it's possible to isolate those applications in
1677           their own address space using seccomp. Once seccomp is
1678           enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
1679           and the task is only allowed to execute a few safe syscalls
1680           defined by each seccomp mode.
1681
1682 config CC_STACKPROTECTOR
1683         bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1684         depends on EXPERIMENTAL
1685         help
1686           This option turns on the -fstack-protector GCC feature. This
1687           feature puts, at the beginning of functions, a canary value on
1688           the stack just before the return address, and validates
1689           the value just before actually returning.  Stack based buffer
1690           overflows (that need to overwrite this return address) now also
1691           overwrite the canary, which gets detected and the attack is then
1692           neutralized via a kernel panic.
1693           This feature requires gcc version 4.2 or above.
1694
1695 config DEPRECATED_PARAM_STRUCT
1696         bool "Provide old way to pass kernel parameters"
1697         help
1698           This was deprecated in 2001 and announced to live on for 5 years.
1699           Some old boot loaders still use this way.
1700
1701 endmenu
1702
1703 menu "Boot options"
1704
1705 # Compressed boot loader in ROM.  Yes, we really want to ask about
1706 # TEXT and BSS so we preserve their values in the config files.
1707 config ZBOOT_ROM_TEXT
1708         hex "Compressed ROM boot loader base address"
1709         default "0"
1710         help
1711           The physical address at which the ROM-able zImage is to be
1712           placed in the target.  Platforms which normally make use of
1713           ROM-able zImage formats normally set this to a suitable
1714           value in their defconfig file.
1715
1716           If ZBOOT_ROM is not enabled, this has no effect.
1717
1718 config ZBOOT_ROM_BSS
1719         hex "Compressed ROM boot loader BSS address"
1720         default "0"
1721         help
1722           The base address of an area of read/write memory in the target
1723           for the ROM-able zImage which must be available while the
1724           decompressor is running. It must be large enough to hold the
1725           entire decompressed kernel plus an additional 128 KiB.
1726           Platforms which normally make use of ROM-able zImage formats
1727           normally set this to a suitable value in their defconfig file.
1728
1729           If ZBOOT_ROM is not enabled, this has no effect.
1730
1731 config ZBOOT_ROM
1732         bool "Compressed boot loader in ROM/flash"
1733         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1734         help
1735           Say Y here if you intend to execute your compressed kernel image
1736           (zImage) directly from ROM or flash.  If unsure, say N.
1737
1738 config ZBOOT_ROM_MMCIF
1739         bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
1740         depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
1741         help
1742           Say Y here to include experimental MMCIF loading code in the
1743           ROM-able zImage. With this enabled it is possible to write the
1744           the ROM-able zImage kernel image to an MMC card and boot the
1745           kernel straight from the reset vector. At reset the processor
1746           Mask ROM will load the first part of the the ROM-able zImage
1747           which in turn loads the rest the kernel image to RAM using the
1748           MMCIF hardware block.
1749
1750 config CMDLINE
1751         string "Default kernel command string"
1752         default ""
1753         help
1754           On some architectures (EBSA110 and CATS), there is currently no way
1755           for the boot loader to pass arguments to the kernel. For these
1756           architectures, you should supply some command-line options at build
1757           time by entering them here. As a minimum, you should specify the
1758           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1759
1760 config CMDLINE_FORCE
1761         bool "Always use the default kernel command string"
1762         depends on CMDLINE != ""
1763         help
1764           Always use the default kernel command string, even if the boot
1765           loader passes other arguments to the kernel.
1766           This is useful if you cannot or don't want to change the
1767           command-line options your boot loader passes to the kernel.
1768
1769           If unsure, say N.
1770
1771 config XIP_KERNEL
1772         bool "Kernel Execute-In-Place from ROM"
1773         depends on !ZBOOT_ROM
1774         help
1775           Execute-In-Place allows the kernel to run from non-volatile storage
1776           directly addressable by the CPU, such as NOR flash. This saves RAM
1777           space since the text section of the kernel is not loaded from flash
1778           to RAM.  Read-write sections, such as the data section and stack,
1779           are still copied to RAM.  The XIP kernel is not compressed since
1780           it has to run directly from flash, so it will take more space to
1781           store it.  The flash address used to link the kernel object files,
1782           and for storing it, is configuration dependent. Therefore, if you
1783           say Y here, you must know the proper physical address where to
1784           store the kernel image depending on your own flash memory usage.
1785
1786           Also note that the make target becomes "make xipImage" rather than
1787           "make zImage" or "make Image".  The final kernel binary to put in
1788           ROM memory will be arch/arm/boot/xipImage.
1789
1790           If unsure, say N.
1791
1792 config XIP_PHYS_ADDR
1793         hex "XIP Kernel Physical Location"
1794         depends on XIP_KERNEL
1795         default "0x00080000"
1796         help
1797           This is the physical address in your flash memory the kernel will
1798           be linked for and stored to.  This address is dependent on your
1799           own flash usage.
1800
1801 config KEXEC
1802         bool "Kexec system call (EXPERIMENTAL)"
1803         depends on EXPERIMENTAL
1804         help
1805           kexec is a system call that implements the ability to shutdown your
1806           current kernel, and to start another kernel.  It is like a reboot
1807           but it is independent of the system firmware.   And like a reboot
1808           you can start any kernel with it, not just Linux.
1809
1810           It is an ongoing process to be certain the hardware in a machine
1811           is properly shutdown, so do not be surprised if this code does not
1812           initially work for you.  It may help to enable device hotplugging
1813           support.
1814
1815 config ATAGS_PROC
1816         bool "Export atags in procfs"
1817         depends on KEXEC
1818         default y
1819         help
1820           Should the atags used to boot the kernel be exported in an "atags"
1821           file in procfs. Useful with kexec.
1822
1823 config CRASH_DUMP
1824         bool "Build kdump crash kernel (EXPERIMENTAL)"
1825         depends on EXPERIMENTAL
1826         help
1827           Generate crash dump after being started by kexec. This should
1828           be normally only set in special crash dump kernels which are
1829           loaded in the main kernel with kexec-tools into a specially
1830           reserved region and then later executed after a crash by
1831           kdump/kexec. The crash dump kernel must be compiled to a
1832           memory address not used by the main kernel
1833
1834           For more details see Documentation/kdump/kdump.txt
1835
1836 config AUTO_ZRELADDR
1837         bool "Auto calculation of the decompressed kernel image address"
1838         depends on !ZBOOT_ROM && !ARCH_U300
1839         help
1840           ZRELADDR is the physical address where the decompressed kernel
1841           image will be placed. If AUTO_ZRELADDR is selected, the address
1842           will be determined at run-time by masking the current IP with
1843           0xf8000000. This assumes the zImage being placed in the first 128MB
1844           from start of memory.
1845
1846 endmenu
1847
1848 menu "CPU Power Management"
1849
1850 if ARCH_HAS_CPUFREQ
1851
1852 source "drivers/cpufreq/Kconfig"
1853
1854 config CPU_FREQ_IMX
1855         tristate "CPUfreq driver for i.MX CPUs"
1856         depends on ARCH_MXC && CPU_FREQ
1857         help
1858           This enables the CPUfreq driver for i.MX CPUs.
1859
1860 config CPU_FREQ_SA1100
1861         bool
1862
1863 config CPU_FREQ_SA1110
1864         bool
1865
1866 config CPU_FREQ_INTEGRATOR
1867         tristate "CPUfreq driver for ARM Integrator CPUs"
1868         depends on ARCH_INTEGRATOR && CPU_FREQ
1869         default y
1870         help
1871           This enables the CPUfreq driver for ARM Integrator CPUs.
1872
1873           For details, take a look at <file:Documentation/cpu-freq>.
1874
1875           If in doubt, say Y.
1876
1877 config CPU_FREQ_PXA
1878         bool
1879         depends on CPU_FREQ && ARCH_PXA && PXA25x
1880         default y
1881         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1882
1883 config CPU_FREQ_S3C64XX
1884         bool "CPUfreq support for Samsung S3C64XX CPUs"
1885         depends on CPU_FREQ && CPU_S3C6410
1886
1887 config CPU_FREQ_S3C
1888         bool
1889         help
1890           Internal configuration node for common cpufreq on Samsung SoC
1891
1892 config CPU_FREQ_S3C24XX
1893         bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
1894         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1895         select CPU_FREQ_S3C
1896         help
1897           This enables the CPUfreq driver for the Samsung S3C24XX family
1898           of CPUs.
1899
1900           For details, take a look at <file:Documentation/cpu-freq>.
1901
1902           If in doubt, say N.
1903
1904 config CPU_FREQ_S3C24XX_PLL
1905         bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
1906         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1907         help
1908           Compile in support for changing the PLL frequency from the
1909           S3C24XX series CPUfreq driver. The PLL takes time to settle
1910           after a frequency change, so by default it is not enabled.
1911
1912           This also means that the PLL tables for the selected CPU(s) will
1913           be built which may increase the size of the kernel image.
1914
1915 config CPU_FREQ_S3C24XX_DEBUG
1916         bool "Debug CPUfreq Samsung driver core"
1917         depends on CPU_FREQ_S3C24XX
1918         help
1919           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1920
1921 config CPU_FREQ_S3C24XX_IODEBUG
1922         bool "Debug CPUfreq Samsung driver IO timing"
1923         depends on CPU_FREQ_S3C24XX
1924         help
1925           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1926
1927 config CPU_FREQ_S3C24XX_DEBUGFS
1928         bool "Export debugfs for CPUFreq"
1929         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1930         help
1931           Export status information via debugfs.
1932
1933 endif
1934
1935 source "drivers/cpuidle/Kconfig"
1936
1937 endmenu
1938
1939 menu "Floating point emulation"
1940
1941 comment "At least one emulation must be selected"
1942
1943 config FPE_NWFPE
1944         bool "NWFPE math emulation"
1945         depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
1946         ---help---
1947           Say Y to include the NWFPE floating point emulator in the kernel.
1948           This is necessary to run most binaries. Linux does not currently
1949           support floating point hardware so you need to say Y here even if
1950           your machine has an FPA or floating point co-processor podule.
1951
1952           You may say N here if you are going to load the Acorn FPEmulator
1953           early in the bootup.
1954
1955 config FPE_NWFPE_XP
1956         bool "Support extended precision"
1957         depends on FPE_NWFPE
1958         help
1959           Say Y to include 80-bit support in the kernel floating-point
1960           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1961           Note that gcc does not generate 80-bit operations by default,
1962           so in most cases this option only enlarges the size of the
1963           floating point emulator without any good reason.
1964
1965           You almost surely want to say N here.
1966
1967 config FPE_FASTFPE
1968         bool "FastFPE math emulation (EXPERIMENTAL)"
1969         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1970         ---help---
1971           Say Y here to include the FAST floating point emulator in the kernel.
1972           This is an experimental much faster emulator which now also has full
1973           precision for the mantissa.  It does not support any exceptions.
1974           It is very simple, and approximately 3-6 times faster than NWFPE.
1975
1976           It should be sufficient for most programs.  It may be not suitable
1977           for scientific calculations, but you have to check this for yourself.
1978           If you do not feel you need a faster FP emulation you should better
1979           choose NWFPE.
1980
1981 config VFP
1982         bool "VFP-format floating point maths"
1983         depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1984         help
1985           Say Y to include VFP support code in the kernel. This is needed
1986           if your hardware includes a VFP unit.
1987
1988           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1989           release notes and additional status information.
1990
1991           Say N if your target does not have VFP hardware.
1992
1993 config VFPv3
1994         bool
1995         depends on VFP
1996         default y if CPU_V7
1997
1998 config NEON
1999         bool "Advanced SIMD (NEON) Extension support"
2000         depends on VFPv3 && CPU_V7
2001         help
2002           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2003           Extension.
2004
2005 endmenu
2006
2007 menu "Userspace binary formats"
2008
2009 source "fs/Kconfig.binfmt"
2010
2011 config ARTHUR
2012         tristate "RISC OS personality"
2013         depends on !AEABI
2014         help
2015           Say Y here to include the kernel code necessary if you want to run
2016           Acorn RISC OS/Arthur binaries under Linux. This code is still very
2017           experimental; if this sounds frightening, say N and sleep in peace.
2018           You can also say M here to compile this support as a module (which
2019           will be called arthur).
2020
2021 endmenu
2022
2023 menu "Power management options"
2024
2025 source "kernel/power/Kconfig"
2026
2027 config ARCH_SUSPEND_POSSIBLE
2028         depends on !ARCH_S5P64X0 && !ARCH_S5P6442
2029         depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
2030                 CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
2031         def_bool y
2032
2033 endmenu
2034
2035 source "net/Kconfig"
2036
2037 source "drivers/Kconfig"
2038
2039 source "fs/Kconfig"
2040
2041 source "arch/arm/Kconfig.debug"
2042
2043 source "security/Kconfig"
2044
2045 source "crypto/Kconfig"
2046
2047 source "lib/Kconfig"