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