arch/arm/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "Linux Kernel Configuration"
   7
   8 config ARM
   9         bool
  10         default y
  11         select HAVE_AOUT
  12         select HAVE_IDE
  13         select RTC_LIB
  14         select SYS_SUPPORTS_APM_EMULATION
  15         select HAVE_OPROFILE
  16         select HAVE_ARCH_KGDB
  17         select HAVE_KPROBES if (!XIP_KERNEL)
  18         select HAVE_KRETPROBES if (HAVE_KPROBES)
  19         select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  20         select HAVE_GENERIC_DMA_COHERENT
  21         select HAVE_KERNEL_GZIP
  22         select HAVE_KERNEL_LZO
  23         help
  24           The ARM series is a line of low-power-consumption RISC chip designs
  25           licensed by ARM Ltd and targeted at embedded applications and
  26           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  27           manufactured, but legacy ARM-based PC hardware remains popular in
  28           Europe.  There is an ARM Linux project with a web page at
  29           <http://www.arm.linux.org.uk/>.
  30
  31 config HAVE_PWM
  32         bool
  33
  34 config SYS_SUPPORTS_APM_EMULATION
  35         bool
  36
  37 config GENERIC_GPIO
  38         bool
  39
  40 config GENERIC_TIME
  41         bool
  42
  43 config GENERIC_CLOCKEVENTS
  44         bool
  45
  46 config GENERIC_CLOCKEVENTS_BROADCAST
  47         bool
  48         depends on GENERIC_CLOCKEVENTS
  49         default y if SMP && !LOCAL_TIMERS
  50
  51 config HAVE_TCM
  52         bool
  53         select GENERIC_ALLOCATOR
  54
  55 config NO_IOPORT
  56         bool
  57
  58 config EISA
  59         bool
  60         ---help---
  61           The Extended Industry Standard Architecture (EISA) bus was
  62           developed as an open alternative to the IBM MicroChannel bus.
  63
  64           The EISA bus provided some of the features of the IBM MicroChannel
  65           bus while maintaining backward compatibility with cards made for
  66           the older ISA bus.  The EISA bus saw limited use between 1988 and
  67           1995 when it was made obsolete by the PCI bus.
  68
  69           Say Y here if you are building a kernel for an EISA-based machine.
  70
  71           Otherwise, say N.
  72
  73 config SBUS
  74         bool
  75
  76 config MCA
  77         bool
  78         help
  79           MicroChannel Architecture is found in some IBM PS/2 machines and
  80           laptops.  It is a bus system similar to PCI or ISA. See
  81           <file:Documentation/mca.txt> (and especially the web page given
  82           there) before attempting to build an MCA bus kernel.
  83
  84 config GENERIC_HARDIRQS
  85         bool
  86         default y
  87
  88 config STACKTRACE_SUPPORT
  89         bool
  90         default y
  91
  92 config HAVE_LATENCYTOP_SUPPORT
  93         bool
  94         depends on !SMP
  95         default y
  96
  97 config LOCKDEP_SUPPORT
  98         bool
  99         default y
 100
 101 config TRACE_IRQFLAGS_SUPPORT
 102         bool
 103         default y
 104
 105 config HARDIRQS_SW_RESEND
 106         bool
 107         default y
 108
 109 config GENERIC_IRQ_PROBE
 110         bool
 111         default y
 112
 113 config GENERIC_LOCKBREAK
 114         bool
 115         default y
 116         depends on SMP && PREEMPT
 117
 118 config RWSEM_GENERIC_SPINLOCK
 119         bool
 120         default y
 121
 122 config RWSEM_XCHGADD_ALGORITHM
 123         bool
 124
 125 config ARCH_HAS_ILOG2_U32
 126         bool
 127
 128 config ARCH_HAS_ILOG2_U64
 129         bool
 130
 131 config ARCH_HAS_CPUFREQ
 132         bool
 133         help
 134           Internal node to signify that the ARCH has CPUFREQ support
 135           and that the relevant menu configurations are displayed for
 136           it.
 137
 138 config GENERIC_HWEIGHT
 139         bool
 140         default y
 141
 142 config GENERIC_CALIBRATE_DELAY
 143         bool
 144         default y
 145
 146 config ARCH_MAY_HAVE_PC_FDC
 147         bool
 148
 149 config ZONE_DMA
 150         bool
 151
 152 config GENERIC_ISA_DMA
 153         bool
 154
 155 config FIQ
 156         bool
 157
 158 config ARCH_MTD_XIP
 159         bool
 160
 161 config GENERIC_HARDIRQS_NO__DO_IRQ
 162         def_bool y
 163
 164 if OPROFILE
 165
 166 config OPROFILE_ARMV6
 167         def_bool y
 168         depends on CPU_V6 && !SMP
 169         select OPROFILE_ARM11_CORE
 170
 171 config OPROFILE_MPCORE
 172         def_bool y
 173         depends on CPU_V6 && SMP
 174         select OPROFILE_ARM11_CORE
 175
 176 config OPROFILE_ARM11_CORE
 177         bool
 178
 179 config OPROFILE_ARMV7
 180         def_bool y
 181         depends on CPU_V7 && !SMP
 182         bool
 183
 184 endif
 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 source "init/Kconfig"
 195
 196 source "kernel/Kconfig.freezer"
 197
 198 menu "System Type"
 199
 200 config MMU
 201         bool "MMU-based Paged Memory Management Support"
 202         default y
 203         help
 204           Select if you want MMU-based virtualised addressing space
 205           support by paged memory management. If unsure, say 'Y'.
 206
 207 choice
 208         prompt "ARM system type"
 209         default ARCH_VERSATILE
 210
 211 config ARCH_AAEC2000
 212         bool "Agilent AAEC-2000 based"
 213         select CPU_ARM920T
 214         select ARM_AMBA
 215         select HAVE_CLK
 216         help
 217           This enables support for systems based on the Agilent AAEC-2000
 218
 219 config ARCH_INTEGRATOR
 220         bool "ARM Ltd. Integrator family"
 221         select ARM_AMBA
 222         select ARCH_HAS_CPUFREQ
 223         select HAVE_CLK
 224         select COMMON_CLKDEV
 225         select ICST525
 226         help
 227           Support for ARM's Integrator platform.
 228
 229 config ARCH_REALVIEW
 230         bool "ARM Ltd. RealView family"
 231         select ARM_AMBA
 232         select HAVE_CLK
 233         select COMMON_CLKDEV
 234         select ICST307
 235         select GENERIC_TIME
 236         select GENERIC_CLOCKEVENTS
 237         select ARCH_WANT_OPTIONAL_GPIOLIB
 238         help
 239           This enables support for ARM Ltd RealView boards.
 240
 241 config ARCH_VERSATILE
 242         bool "ARM Ltd. Versatile family"
 243         select ARM_AMBA
 244         select ARM_VIC
 245         select HAVE_CLK
 246         select COMMON_CLKDEV
 247         select ICST307
 248         select GENERIC_TIME
 249         select GENERIC_CLOCKEVENTS
 250         select ARCH_WANT_OPTIONAL_GPIOLIB
 251         help
 252           This enables support for ARM Ltd Versatile board.
 253
 254 config ARCH_AT91
 255         bool "Atmel AT91"
 256         select GENERIC_GPIO
 257         select ARCH_REQUIRE_GPIOLIB
 258         select HAVE_CLK
 259         help
 260           This enables support for systems based on the Atmel AT91RM9200,
 261           AT91SAM9 and AT91CAP9 processors.
 262
 263 config ARCH_CLPS711X
 264         bool "Cirrus Logic CLPS711x/EP721x-based"
 265         select CPU_ARM720T
 266         help
 267           Support for Cirrus Logic 711x/721x based boards.
 268
 269 config ARCH_GEMINI
 270         bool "Cortina Systems Gemini"
 271         select CPU_FA526
 272         select GENERIC_GPIO
 273         select ARCH_REQUIRE_GPIOLIB
 274         help
 275           Support for the Cortina Systems Gemini family SoCs
 276
 277 config ARCH_EBSA110
 278         bool "EBSA-110"
 279         select CPU_SA110
 280         select ISA
 281         select NO_IOPORT
 282         help
 283           This is an evaluation board for the StrongARM processor available
 284           from Digital. It has limited hardware on-board, including an
 285           Ethernet interface, two PCMCIA sockets, two serial ports and a
 286           parallel port.
 287
 288 config ARCH_EP93XX
 289         bool "EP93xx-based"
 290         select CPU_ARM920T
 291         select ARM_AMBA
 292         select ARM_VIC
 293         select GENERIC_GPIO
 294         select HAVE_CLK
 295         select COMMON_CLKDEV
 296         select ARCH_REQUIRE_GPIOLIB
 297         select ARCH_HAS_HOLES_MEMORYMODEL
 298         help
 299           This enables support for the Cirrus EP93xx series of CPUs.
 300
 301 config ARCH_FOOTBRIDGE
 302         bool "FootBridge"
 303         select CPU_SA110
 304         select FOOTBRIDGE
 305         help
 306           Support for systems based on the DC21285 companion chip
 307           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 308
 309 config ARCH_MXC
 310         bool "Freescale MXC/iMX-based"
 311         select GENERIC_TIME
 312         select GENERIC_CLOCKEVENTS
 313         select ARCH_REQUIRE_GPIOLIB
 314         select HAVE_CLK
 315         select COMMON_CLKDEV
 316         help
 317           Support for Freescale MXC/iMX-based family of processors
 318
 319 config ARCH_STMP3XXX
 320         bool "Freescale STMP3xxx"
 321         select CPU_ARM926T
 322         select HAVE_CLK
 323         select COMMON_CLKDEV
 324         select ARCH_REQUIRE_GPIOLIB
 325         select GENERIC_TIME
 326         select GENERIC_CLOCKEVENTS
 327         select GENERIC_GPIO
 328         select USB_ARCH_HAS_EHCI
 329         help
 330           Support for systems based on the Freescale 3xxx CPUs.
 331
 332 config ARCH_NETX
 333         bool "Hilscher NetX based"
 334         select CPU_ARM926T
 335         select ARM_VIC
 336         select GENERIC_CLOCKEVENTS
 337         select GENERIC_TIME
 338         help
 339           This enables support for systems based on the Hilscher NetX Soc
 340
 341 config ARCH_H720X
 342         bool "Hynix HMS720x-based"
 343         select CPU_ARM720T
 344         select ISA_DMA_API
 345         help
 346           This enables support for systems based on the Hynix HMS720x
 347
 348 config ARCH_NOMADIK
 349         bool "STMicroelectronics Nomadik"
 350         select ARM_AMBA
 351         select ARM_VIC
 352         select CPU_ARM926T
 353         select HAVE_CLK
 354         select COMMON_CLKDEV
 355         select GENERIC_TIME
 356         select GENERIC_CLOCKEVENTS
 357         select GENERIC_GPIO
 358         select ARCH_REQUIRE_GPIOLIB
 359         help
 360           Support for the Nomadik platform by ST-Ericsson
 361
 362 config ARCH_IOP13XX
 363         bool "IOP13xx-based"
 364         depends on MMU
 365         select CPU_XSC3
 366         select PLAT_IOP
 367         select PCI
 368         select ARCH_SUPPORTS_MSI
 369         select VMSPLIT_1G
 370         help
 371           Support for Intel's IOP13XX (XScale) family of processors.
 372
 373 config ARCH_IOP32X
 374         bool "IOP32x-based"
 375         depends on MMU
 376         select CPU_XSCALE
 377         select PLAT_IOP
 378         select PCI
 379         select GENERIC_GPIO
 380         select ARCH_REQUIRE_GPIOLIB
 381         help
 382           Support for Intel's 80219 and IOP32X (XScale) family of
 383           processors.
 384
 385 config ARCH_IOP33X
 386         bool "IOP33x-based"
 387         depends on MMU
 388         select CPU_XSCALE
 389         select PLAT_IOP
 390         select PCI
 391         select GENERIC_GPIO
 392         select ARCH_REQUIRE_GPIOLIB
 393         help
 394           Support for Intel's IOP33X (XScale) family of processors.
 395
 396 config ARCH_IXP23XX
 397         bool "IXP23XX-based"
 398         depends on MMU
 399         select CPU_XSC3
 400         select PCI
 401         help
 402           Support for Intel's IXP23xx (XScale) family of processors.
 403
 404 config ARCH_IXP2000
 405         bool "IXP2400/2800-based"
 406         depends on MMU
 407         select CPU_XSCALE
 408         select PCI
 409         help
 410           Support for Intel's IXP2400/2800 (XScale) family of processors.
 411
 412 config ARCH_IXP4XX
 413         bool "IXP4xx-based"
 414         depends on MMU
 415         select CPU_XSCALE
 416         select GENERIC_GPIO
 417         select GENERIC_TIME
 418         select GENERIC_CLOCKEVENTS
 419         select DMABOUNCE if PCI
 420         help
 421           Support for Intel's IXP4XX (XScale) family of processors.
 422
 423 config ARCH_L7200
 424         bool "LinkUp-L7200"
 425         select CPU_ARM720T
 426         select FIQ
 427         help
 428           Say Y here if you intend to run this kernel on a LinkUp Systems
 429           L7200 Software Development Board which uses an ARM720T processor.
 430           Information on this board can be obtained at:
 431
 432           <http://www.linkupsys.com/>
 433
 434           If you have any questions or comments about the Linux kernel port
 435           to this board, send e-mail to <sjhill@cotw.com>.
 436
 437 config ARCH_DOVE
 438         bool "Marvell Dove"
 439         select PCI
 440         select GENERIC_GPIO
 441         select ARCH_REQUIRE_GPIOLIB
 442         select GENERIC_TIME
 443         select GENERIC_CLOCKEVENTS
 444         select PLAT_ORION
 445         help
 446           Support for the Marvell Dove SoC 88AP510
 447
 448 config ARCH_KIRKWOOD
 449         bool "Marvell Kirkwood"
 450         select CPU_FEROCEON
 451         select PCI
 452         select GENERIC_GPIO
 453         select ARCH_REQUIRE_GPIOLIB
 454         select GENERIC_TIME
 455         select GENERIC_CLOCKEVENTS
 456         select PLAT_ORION
 457         help
 458           Support for the following Marvell Kirkwood series SoCs:
 459           88F6180, 88F6192 and 88F6281.
 460
 461 config ARCH_LOKI
 462         bool "Marvell Loki (88RC8480)"
 463         select CPU_FEROCEON
 464         select GENERIC_TIME
 465         select GENERIC_CLOCKEVENTS
 466         select PLAT_ORION
 467         help
 468           Support for the Marvell Loki (88RC8480) SoC.
 469
 470 config ARCH_MV78XX0
 471         bool "Marvell MV78xx0"
 472         select CPU_FEROCEON
 473         select PCI
 474         select GENERIC_GPIO
 475         select ARCH_REQUIRE_GPIOLIB
 476         select GENERIC_TIME
 477         select GENERIC_CLOCKEVENTS
 478         select PLAT_ORION
 479         help
 480           Support for the following Marvell MV78xx0 series SoCs:
 481           MV781x0, MV782x0.
 482
 483 config ARCH_ORION5X
 484         bool "Marvell Orion"
 485         depends on MMU
 486         select CPU_FEROCEON
 487         select PCI
 488         select GENERIC_GPIO
 489         select ARCH_REQUIRE_GPIOLIB
 490         select GENERIC_TIME
 491         select GENERIC_CLOCKEVENTS
 492         select PLAT_ORION
 493         help
 494           Support for the following Marvell Orion 5x series SoCs:
 495           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 496           Orion-2 (5281), Orion-1-90 (6183).
 497
 498 config ARCH_MMP
 499         bool "Marvell PXA168/910/MMP2"
 500         depends on MMU
 501         select GENERIC_GPIO
 502         select ARCH_REQUIRE_GPIOLIB
 503         select HAVE_CLK
 504         select COMMON_CLKDEV
 505         select GENERIC_TIME
 506         select GENERIC_CLOCKEVENTS
 507         select TICK_ONESHOT
 508         select PLAT_PXA
 509         help
 510           Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
 511
 512 config ARCH_KS8695
 513         bool "Micrel/Kendin KS8695"
 514         select CPU_ARM922T
 515         select GENERIC_GPIO
 516         select ARCH_REQUIRE_GPIOLIB
 517         help
 518           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 519           System-on-Chip devices.
 520
 521 config ARCH_NS9XXX
 522         bool "NetSilicon NS9xxx"
 523         select CPU_ARM926T
 524         select GENERIC_GPIO
 525         select GENERIC_TIME
 526         select GENERIC_CLOCKEVENTS
 527         select HAVE_CLK
 528         help
 529           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 530           System.
 531
 532           <http://www.digi.com/products/microprocessors/index.jsp>
 533
 534 config ARCH_W90X900
 535         bool "Nuvoton W90X900 CPU"
 536         select CPU_ARM926T
 537         select ARCH_REQUIRE_GPIOLIB
 538         select GENERIC_GPIO
 539         select HAVE_CLK
 540         select COMMON_CLKDEV
 541         select GENERIC_TIME
 542         select GENERIC_CLOCKEVENTS
 543         help
 544           Support for Nuvoton (Winbond logic dept.) ARM9 processor,
 545           At present, the w90x900 has been renamed nuc900, regarding
 546           the ARM series product line, you can login the following
 547           link address to know more.
 548
 549           <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 550                 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 551
 552 config ARCH_PNX4008
 553         bool "Philips Nexperia PNX4008 Mobile"
 554         select CPU_ARM926T
 555         select HAVE_CLK
 556         help
 557           This enables support for Philips PNX4008 mobile platform.
 558
 559 config ARCH_PXA
 560         bool "PXA2xx/PXA3xx-based"
 561         depends on MMU
 562         select ARCH_MTD_XIP
 563         select ARCH_HAS_CPUFREQ
 564         select GENERIC_GPIO
 565         select HAVE_CLK
 566         select COMMON_CLKDEV
 567         select ARCH_REQUIRE_GPIOLIB
 568         select GENERIC_TIME
 569         select GENERIC_CLOCKEVENTS
 570         select TICK_ONESHOT
 571         select PLAT_PXA
 572         help
 573           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 574
 575 config ARCH_MSM
 576         bool "Qualcomm MSM"
 577         select CPU_V6
 578         select GENERIC_TIME
 579         select GENERIC_CLOCKEVENTS
 580         help
 581           Support for Qualcomm MSM7K based systems.  This runs on the ARM11
 582           apps processor of the MSM7K and depends on a shared memory
 583           interface to the ARM9 modem processor which runs the baseband stack
 584           and controls some vital subsystems (clock and power control, etc).
 585
 586 config ARCH_SHMOBILE
 587         bool "Renesas SH-Mobile"
 588         help
 589           Support for Renesas's SH-Mobile ARM platforms
 590
 591 config ARCH_RPC
 592         bool "RiscPC"
 593         select ARCH_ACORN
 594         select FIQ
 595         select TIMER_ACORN
 596         select ARCH_MAY_HAVE_PC_FDC
 597         select HAVE_PATA_PLATFORM
 598         select ISA_DMA_API
 599         select NO_IOPORT
 600         select ARCH_SPARSEMEM_ENABLE
 601         help
 602           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 603           CD-ROM interface, serial and parallel port, and the floppy drive.
 604
 605 config ARCH_SA1100
 606         bool "SA1100-based"
 607         select CPU_SA1100
 608         select ISA
 609         select ARCH_SPARSEMEM_ENABLE
 610         select ARCH_MTD_XIP
 611         select ARCH_HAS_CPUFREQ
 612         select CPU_FREQ
 613         select GENERIC_GPIO
 614         select GENERIC_TIME
 615         select GENERIC_CLOCKEVENTS
 616         select HAVE_CLK
 617         select TICK_ONESHOT
 618         select ARCH_REQUIRE_GPIOLIB
 619         help
 620           Support for StrongARM 11x0 based boards.
 621
 622 config ARCH_S3C2410
 623         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 624         select GENERIC_GPIO
 625         select ARCH_HAS_CPUFREQ
 626         select HAVE_CLK
 627         help
 628           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 629           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 630           the Samsung SMDK2410 development board (and derivatives).
 631
 632 config ARCH_S3C64XX
 633         bool "Samsung S3C64XX"
 634         select GENERIC_GPIO
 635         select HAVE_CLK
 636         select ARCH_HAS_CPUFREQ
 637         help
 638           Samsung S3C64XX series based systems
 639
 640 config ARCH_S5P6440
 641         bool "Samsung S5P6440"
 642         select CPU_V6
 643         select GENERIC_GPIO
 644         select HAVE_CLK
 645         help
 646           Samsung S5P6440 CPU based systems
 647
 648 config ARCH_S5PC1XX
 649         bool "Samsung S5PC1XX"
 650         select GENERIC_GPIO
 651         select HAVE_CLK
 652         select CPU_V7
 653         help
 654           Samsung S5PC1XX series based systems
 655
 656 config ARCH_SHARK
 657         bool "Shark"
 658         select CPU_SA110
 659         select ISA
 660         select ISA_DMA
 661         select ZONE_DMA
 662         select PCI
 663         help
 664           Support for the StrongARM based Digital DNARD machine, also known
 665           as "Shark" (<http://www.shark-linux.de/shark.html>).
 666
 667 config ARCH_LH7A40X
 668         bool "Sharp LH7A40X"
 669         select CPU_ARM922T
 670         select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
 671         select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
 672         help
 673           Say Y here for systems based on one of the Sharp LH7A40X
 674           System on a Chip processors.  These CPUs include an ARM922T
 675           core with a wide array of integrated devices for
 676           hand-held and low-power applications.
 677
 678 config ARCH_U300
 679         bool "ST-Ericsson U300 Series"
 680         depends on MMU
 681         select CPU_ARM926T
 682         select HAVE_TCM
 683         select ARM_AMBA
 684         select ARM_VIC
 685         select GENERIC_TIME
 686         select GENERIC_CLOCKEVENTS
 687         select HAVE_CLK
 688         select COMMON_CLKDEV
 689         select GENERIC_GPIO
 690         help
 691           Support for ST-Ericsson U300 series mobile platforms.
 692
 693 config ARCH_DAVINCI
 694         bool "TI DaVinci"
 695         select CPU_ARM926T
 696         select GENERIC_TIME
 697         select GENERIC_CLOCKEVENTS
 698         select GENERIC_GPIO
 699         select ARCH_REQUIRE_GPIOLIB
 700         select HAVE_CLK
 701         select ZONE_DMA
 702         select HAVE_IDE
 703         select COMMON_CLKDEV
 704         select GENERIC_ALLOCATOR
 705         select ARCH_HAS_HOLES_MEMORYMODEL
 706         help
 707           Support for TI's DaVinci platform.
 708
 709 config ARCH_OMAP
 710         bool "TI OMAP"
 711         select GENERIC_GPIO
 712         select HAVE_CLK
 713         select ARCH_REQUIRE_GPIOLIB
 714         select ARCH_HAS_CPUFREQ
 715         select GENERIC_TIME
 716         select GENERIC_CLOCKEVENTS
 717         select ARCH_HAS_HOLES_MEMORYMODEL
 718         help
 719           Support for TI's OMAP platform (OMAP1 and OMAP2).
 720
 721 config ARCH_BCMRING
 722         bool "Broadcom BCMRING"
 723         depends on MMU
 724         select CPU_V6
 725         select ARM_AMBA
 726         select COMMON_CLKDEV
 727         select GENERIC_TIME
 728         select GENERIC_CLOCKEVENTS
 729         select ARCH_WANT_OPTIONAL_GPIOLIB
 730         help
 731           Support for Broadcom's BCMRing platform.
 732
 733 config ARCH_U8500
 734         bool "ST-Ericsson U8500 Series"
 735         select CPU_V7
 736         select ARM_AMBA
 737         select GENERIC_TIME
 738         select GENERIC_CLOCKEVENTS
 739         select COMMON_CLKDEV
 740         help
 741           Support for ST-Ericsson's Ux500 architecture
 742
 743 endchoice
 744
 745 source "arch/arm/mach-aaec2000/Kconfig"
 746
 747 source "arch/arm/mach-at91/Kconfig"
 748
 749 source "arch/arm/mach-bcmring/Kconfig"
 750
 751 source "arch/arm/mach-clps711x/Kconfig"
 752
 753 source "arch/arm/mach-davinci/Kconfig"
 754
 755 source "arch/arm/mach-dove/Kconfig"
 756
 757 source "arch/arm/mach-ep93xx/Kconfig"
 758
 759 source "arch/arm/mach-footbridge/Kconfig"
 760
 761 source "arch/arm/mach-gemini/Kconfig"
 762
 763 source "arch/arm/mach-h720x/Kconfig"
 764
 765 source "arch/arm/mach-integrator/Kconfig"
 766
 767 source "arch/arm/mach-iop32x/Kconfig"
 768
 769 source "arch/arm/mach-iop33x/Kconfig"
 770
 771 source "arch/arm/mach-iop13xx/Kconfig"
 772
 773 source "arch/arm/mach-ixp4xx/Kconfig"
 774
 775 source "arch/arm/mach-ixp2000/Kconfig"
 776
 777 source "arch/arm/mach-ixp23xx/Kconfig"
 778
 779 source "arch/arm/mach-kirkwood/Kconfig"
 780
 781 source "arch/arm/mach-ks8695/Kconfig"
 782
 783 source "arch/arm/mach-lh7a40x/Kconfig"
 784
 785 source "arch/arm/mach-loki/Kconfig"
 786
 787 source "arch/arm/mach-msm/Kconfig"
 788
 789 source "arch/arm/mach-mv78xx0/Kconfig"
 790
 791 source "arch/arm/plat-mxc/Kconfig"
 792
 793 source "arch/arm/mach-netx/Kconfig"
 794
 795 source "arch/arm/mach-nomadik/Kconfig"
 796 source "arch/arm/plat-nomadik/Kconfig"
 797
 798 source "arch/arm/mach-ns9xxx/Kconfig"
 799
 800 source "arch/arm/plat-omap/Kconfig"
 801
 802 source "arch/arm/mach-omap1/Kconfig"
 803
 804 source "arch/arm/mach-omap2/Kconfig"
 805
 806 source "arch/arm/mach-orion5x/Kconfig"
 807
 808 source "arch/arm/mach-pxa/Kconfig"
 809 source "arch/arm/plat-pxa/Kconfig"
 810
 811 source "arch/arm/mach-mmp/Kconfig"
 812
 813 source "arch/arm/mach-realview/Kconfig"
 814
 815 source "arch/arm/mach-sa1100/Kconfig"
 816
 817 source "arch/arm/plat-samsung/Kconfig"
 818 source "arch/arm/plat-s3c24xx/Kconfig"
 819 source "arch/arm/plat-s3c64xx/Kconfig"
 820 source "arch/arm/plat-s3c/Kconfig"
 821 source "arch/arm/plat-s5p/Kconfig"
 822 source "arch/arm/plat-s5pc1xx/Kconfig"
 823
 824 if ARCH_S3C2410
 825 source "arch/arm/mach-s3c2400/Kconfig"
 826 source "arch/arm/mach-s3c2410/Kconfig"
 827 source "arch/arm/mach-s3c2412/Kconfig"
 828 source "arch/arm/mach-s3c2440/Kconfig"
 829 source "arch/arm/mach-s3c2442/Kconfig"
 830 source "arch/arm/mach-s3c2443/Kconfig"
 831 endif
 832
 833 if ARCH_S3C64XX
 834 source "arch/arm/mach-s3c6400/Kconfig"
 835 source "arch/arm/mach-s3c6410/Kconfig"
 836 endif
 837
 838 source "arch/arm/mach-s5p6440/Kconfig"
 839
 840 source "arch/arm/mach-shmobile/Kconfig"
 841
 842 source "arch/arm/plat-stmp3xxx/Kconfig"
 843
 844 if ARCH_S5PC1XX
 845 source "arch/arm/mach-s5pc100/Kconfig"
 846 endif
 847
 848 source "arch/arm/mach-u300/Kconfig"
 849
 850 source "arch/arm/mach-ux500/Kconfig"
 851
 852 source "arch/arm/mach-versatile/Kconfig"
 853
 854 source "arch/arm/mach-w90x900/Kconfig"
 855
 856 # Definitions to make life easier
 857 config ARCH_ACORN
 858         bool
 859
 860 config PLAT_IOP
 861         bool
 862         select GENERIC_CLOCKEVENTS
 863         select GENERIC_TIME
 864
 865 config PLAT_ORION
 866         bool
 867
 868 config PLAT_PXA
 869         bool
 870
 871 source arch/arm/mm/Kconfig
 872
 873 config IWMMXT
 874         bool "Enable iWMMXt support"
 875         depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
 876         default y if PXA27x || PXA3xx || ARCH_MMP
 877         help
 878           Enable support for iWMMXt context switching at run time if
 879           running on a CPU that supports it.
 880
 881 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 882 config XSCALE_PMU
 883         bool
 884         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 885         default y
 886
 887 if !MMU
 888 source "arch/arm/Kconfig-nommu"
 889 endif
 890
 891 config ARM_ERRATA_411920
 892         bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
 893         depends on CPU_V6 && !SMP
 894         help
 895           Invalidation of the Instruction Cache operation can
 896           fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
 897           It does not affect the MPCore. This option enables the ARM Ltd.
 898           recommended workaround.
 899
 900 config ARM_ERRATA_430973
 901         bool "ARM errata: Stale prediction on replaced interworking branch"
 902         depends on CPU_V7
 903         help
 904           This option enables the workaround for the 430973 Cortex-A8
 905           (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
 906           interworking branch is replaced with another code sequence at the
 907           same virtual address, whether due to self-modifying code or virtual
 908           to physical address re-mapping, Cortex-A8 does not recover from the
 909           stale interworking branch prediction. This results in Cortex-A8
 910           executing the new code sequence in the incorrect ARM or Thumb state.
 911           The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
 912           and also flushes the branch target cache at every context switch.
 913           Note that setting specific bits in the ACTLR register may not be
 914           available in non-secure mode.
 915
 916 config ARM_ERRATA_458693
 917         bool "ARM errata: Processor deadlock when a false hazard is created"
 918         depends on CPU_V7
 919         help
 920           This option enables the workaround for the 458693 Cortex-A8 (r2p0)
 921           erratum. For very specific sequences of memory operations, it is
 922           possible for a hazard condition intended for a cache line to instead
 923           be incorrectly associated with a different cache line. This false
 924           hazard might then cause a processor deadlock. The workaround enables
 925           the L1 caching of the NEON accesses and disables the PLD instruction
 926           in the ACTLR register. Note that setting specific bits in the ACTLR
 927           register may not be available in non-secure mode.
 928
 929 config ARM_ERRATA_460075
 930         bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
 931         depends on CPU_V7
 932         help
 933           This option enables the workaround for the 460075 Cortex-A8 (r2p0)
 934           erratum. Any asynchronous access to the L2 cache may encounter a
 935           situation in which recent store transactions to the L2 cache are lost
 936           and overwritten with stale memory contents from external memory. The
 937           workaround disables the write-allocate mode for the L2 cache via the
 938           ACTLR register. Note that setting specific bits in the ACTLR register
 939           may not be available in non-secure mode.
 940
 941 endmenu
 942
 943 source "arch/arm/common/Kconfig"
 944
 945 config FORCE_MAX_ZONEORDER
 946         int
 947         depends on SA1111
 948         default "9"
 949
 950 menu "Bus support"
 951
 952 config ARM_AMBA
 953         bool
 954
 955 config ISA
 956         bool
 957         help
 958           Find out whether you have ISA slots on your motherboard.  ISA is the
 959           name of a bus system, i.e. the way the CPU talks to the other stuff
 960           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 961           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 962           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 963
 964 # Select ISA DMA controller support
 965 config ISA_DMA
 966         bool
 967         select ISA_DMA_API
 968
 969 # Select ISA DMA interface
 970 config ISA_DMA_API
 971         bool
 972
 973 config PCI
 974         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 975         help
 976           Find out whether you have a PCI motherboard. PCI is the name of a
 977           bus system, i.e. the way the CPU talks to the other stuff inside
 978           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 979           VESA. If you have PCI, say Y, otherwise N.
 980
 981 config PCI_SYSCALL
 982         def_bool PCI
 983
 984 # Select the host bridge type
 985 config PCI_HOST_VIA82C505
 986         bool
 987         depends on PCI && ARCH_SHARK
 988         default y
 989
 990 config PCI_HOST_ITE8152
 991         bool
 992         depends on PCI && MACH_ARMCORE
 993         default y
 994         select DMABOUNCE
 995
 996 source "drivers/pci/Kconfig"
 997
 998 source "drivers/pcmcia/Kconfig"
 999
1000 endmenu
1001
1002 menu "Kernel Features"
1003
1004 source "kernel/time/Kconfig"
1005
1006 config SMP
1007         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1008         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1009                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1010         depends on GENERIC_CLOCKEVENTS
1011         select USE_GENERIC_SMP_HELPERS
1012         select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1013         help
1014           This enables support for systems with more than one CPU. If you have
1015           a system with only one CPU, like most personal computers, say N. If
1016           you have a system with more than one CPU, say Y.
1017
1018           If you say N here, the kernel will run on single and multiprocessor
1019           machines, but will use only one CPU of a multiprocessor machine. If
1020           you say Y here, the kernel will run on many, but not all, single
1021           processor machines. On a single processor machine, the kernel will
1022           run faster if you say N here.
1023
1024           See also <file:Documentation/i386/IO-APIC.txt>,
1025           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1026           <http://www.linuxdoc.org/docs.html#howto>.
1027
1028           If you don't know what to do here, say N.
1029
1030 config HAVE_ARM_SCU
1031         bool
1032         depends on SMP
1033         help
1034           This option enables support for the ARM system coherency unit
1035
1036 config HAVE_ARM_TWD
1037         bool
1038         depends on SMP
1039         help
1040           This options enables support for the ARM timer and watchdog unit
1041
1042 choice
1043         prompt "Memory split"
1044         default VMSPLIT_3G
1045         help
1046           Select the desired split between kernel and user memory.
1047
1048           If you are not absolutely sure what you are doing, leave this
1049           option alone!
1050
1051         config VMSPLIT_3G
1052                 bool "3G/1G user/kernel split"
1053         config VMSPLIT_2G
1054                 bool "2G/2G user/kernel split"
1055         config VMSPLIT_1G
1056                 bool "1G/3G user/kernel split"
1057 endchoice
1058
1059 config PAGE_OFFSET
1060         hex
1061         default 0x40000000 if VMSPLIT_1G
1062         default 0x80000000 if VMSPLIT_2G
1063         default 0xC0000000
1064
1065 config NR_CPUS
1066         int "Maximum number of CPUs (2-32)"
1067         range 2 32
1068         depends on SMP
1069         default "4"
1070
1071 config HOTPLUG_CPU
1072         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1073         depends on SMP && HOTPLUG && EXPERIMENTAL
1074         help
1075           Say Y here to experiment with turning CPUs off and on.  CPUs
1076           can be controlled through /sys/devices/system/cpu.
1077
1078 config LOCAL_TIMERS
1079         bool "Use local timer interrupts"
1080         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1081                 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1082         default y
1083         select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1084         help
1085           Enable support for local timers on SMP platforms, rather then the
1086           legacy IPI broadcast method.  Local timers allows the system
1087           accounting to be spread across the timer interval, preventing a
1088           "thundering herd" at every timer tick.
1089
1090 source kernel/Kconfig.preempt
1091
1092 config HZ
1093         int
1094         default 128 if ARCH_L7200
1095         default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440
1096         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1097         default AT91_TIMER_HZ if ARCH_AT91
1098         default 100
1099
1100 config THUMB2_KERNEL
1101         bool "Compile the kernel in Thumb-2 mode"
1102         depends on CPU_V7 && EXPERIMENTAL
1103         select AEABI
1104         select ARM_ASM_UNIFIED
1105         help
1106           By enabling this option, the kernel will be compiled in
1107           Thumb-2 mode. A compiler/assembler that understand the unified
1108           ARM-Thumb syntax is needed.
1109
1110           If unsure, say N.
1111
1112 config ARM_ASM_UNIFIED
1113         bool
1114
1115 config AEABI
1116         bool "Use the ARM EABI to compile the kernel"
1117         help
1118           This option allows for the kernel to be compiled using the latest
1119           ARM ABI (aka EABI).  This is only useful if you are using a user
1120           space environment that is also compiled with EABI.
1121
1122           Since there are major incompatibilities between the legacy ABI and
1123           EABI, especially with regard to structure member alignment, this
1124           option also changes the kernel syscall calling convention to
1125           disambiguate both ABIs and allow for backward compatibility support
1126           (selected with CONFIG_OABI_COMPAT).
1127
1128           To use this you need GCC version 4.0.0 or later.
1129
1130 config OABI_COMPAT
1131         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1132         depends on AEABI && EXPERIMENTAL
1133         default y
1134         help
1135           This option preserves the old syscall interface along with the
1136           new (ARM EABI) one. It also provides a compatibility layer to
1137           intercept syscalls that have structure arguments which layout
1138           in memory differs between the legacy ABI and the new ARM EABI
1139           (only for non "thumb" binaries). This option adds a tiny
1140           overhead to all syscalls and produces a slightly larger kernel.
1141           If you know you'll be using only pure EABI user space then you
1142           can say N here. If this option is not selected and you attempt
1143           to execute a legacy ABI binary then the result will be
1144           UNPREDICTABLE (in fact it can be predicted that it won't work
1145           at all). If in doubt say Y.
1146
1147 config ARCH_HAS_HOLES_MEMORYMODEL
1148         bool
1149
1150 # Discontigmem is deprecated
1151 config ARCH_DISCONTIGMEM_ENABLE
1152         bool
1153
1154 config ARCH_SPARSEMEM_ENABLE
1155         bool
1156
1157 config ARCH_SPARSEMEM_DEFAULT
1158         def_bool ARCH_SPARSEMEM_ENABLE
1159
1160 config ARCH_SELECT_MEMORY_MODEL
1161         def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1162
1163 config NODES_SHIFT
1164         int
1165         default "4" if ARCH_LH7A40X
1166         default "2"
1167         depends on NEED_MULTIPLE_NODES
1168
1169 config HIGHMEM
1170         bool "High Memory Support (EXPERIMENTAL)"
1171         depends on MMU && EXPERIMENTAL
1172         help
1173           The address space of ARM processors is only 4 Gigabytes large
1174           and it has to accommodate user address space, kernel address
1175           space as well as some memory mapped IO. That means that, if you
1176           have a large amount of physical memory and/or IO, not all of the
1177           memory can be "permanently mapped" by the kernel. The physical
1178           memory that is not permanently mapped is called "high memory".
1179
1180           Depending on the selected kernel/user memory split, minimum
1181           vmalloc space and actual amount of RAM, you may not need this
1182           option which should result in a slightly faster kernel.
1183
1184           If unsure, say n.
1185
1186 config HIGHPTE
1187         bool "Allocate 2nd-level pagetables from highmem"
1188         depends on HIGHMEM
1189         depends on !OUTER_CACHE
1190
1191 source "mm/Kconfig"
1192
1193 config LEDS
1194         bool "Timer and CPU usage LEDs"
1195         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1196                    ARCH_EBSA285 || ARCH_INTEGRATOR || \
1197                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1198                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1199                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1200                    ARCH_AT91 || ARCH_DAVINCI || \
1201                    ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1202         help
1203           If you say Y here, the LEDs on your machine will be used
1204           to provide useful information about your current system status.
1205
1206           If you are compiling a kernel for a NetWinder or EBSA-285, you will
1207           be able to select which LEDs are active using the options below. If
1208           you are compiling a kernel for the EBSA-110 or the LART however, the
1209           red LED will simply flash regularly to indicate that the system is
1210           still functional. It is safe to say Y here if you have a CATS
1211           system, but the driver will do nothing.
1212
1213 config LEDS_TIMER
1214         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1215                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1216                             || MACH_OMAP_PERSEUS2
1217         depends on LEDS
1218         depends on !GENERIC_CLOCKEVENTS
1219         default y if ARCH_EBSA110
1220         help
1221           If you say Y here, one of the system LEDs (the green one on the
1222           NetWinder, the amber one on the EBSA285, or the red one on the LART)
1223           will flash regularly to indicate that the system is still
1224           operational. This is mainly useful to kernel hackers who are
1225           debugging unstable kernels.
1226
1227           The LART uses the same LED for both Timer LED and CPU usage LED
1228           functions. You may choose to use both, but the Timer LED function
1229           will overrule the CPU usage LED.
1230
1231 config LEDS_CPU
1232         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1233                         !ARCH_OMAP) \
1234                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1235                         || MACH_OMAP_PERSEUS2
1236         depends on LEDS
1237         help
1238           If you say Y here, the red LED will be used to give a good real
1239           time indication of CPU usage, by lighting whenever the idle task
1240           is not currently executing.
1241
1242           The LART uses the same LED for both Timer LED and CPU usage LED
1243           functions. You may choose to use both, but the Timer LED function
1244           will overrule the CPU usage LED.
1245
1246 config ALIGNMENT_TRAP
1247         bool
1248         depends on CPU_CP15_MMU
1249         default y if !ARCH_EBSA110
1250         help
1251           ARM processors cannot fetch/store information which is not
1252           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1253           address divisible by 4. On 32-bit ARM processors, these non-aligned
1254           fetch/store instructions will be emulated in software if you say
1255           here, which has a severe performance impact. This is necessary for
1256           correct operation of some network protocols. With an IP-only
1257           configuration it is safe to say N, otherwise say Y.
1258
1259 config UACCESS_WITH_MEMCPY
1260         bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1261         depends on MMU && EXPERIMENTAL
1262         default y if CPU_FEROCEON
1263         help
1264           Implement faster copy_to_user and clear_user methods for CPU
1265           cores where a 8-word STM instruction give significantly higher
1266           memory write throughput than a sequence of individual 32bit stores.
1267
1268           A possible side effect is a slight increase in scheduling latency
1269           between threads sharing the same address space if they invoke
1270           such copy operations with large buffers.
1271
1272           However, if the CPU data cache is using a write-allocate mode,
1273           this option is unlikely to provide any performance gain.
1274
1275 endmenu
1276
1277 menu "Boot options"
1278
1279 # Compressed boot loader in ROM.  Yes, we really want to ask about
1280 # TEXT and BSS so we preserve their values in the config files.
1281 config ZBOOT_ROM_TEXT
1282         hex "Compressed ROM boot loader base address"
1283         default "0"
1284         help
1285           The physical address at which the ROM-able zImage is to be
1286           placed in the target.  Platforms which normally make use of
1287           ROM-able zImage formats normally set this to a suitable
1288           value in their defconfig file.
1289
1290           If ZBOOT_ROM is not enabled, this has no effect.
1291
1292 config ZBOOT_ROM_BSS
1293         hex "Compressed ROM boot loader BSS address"
1294         default "0"
1295         help
1296           The base address of an area of read/write memory in the target
1297           for the ROM-able zImage which must be available while the
1298           decompressor is running. It must be large enough to hold the
1299           entire decompressed kernel plus an additional 128 KiB.
1300           Platforms which normally make use of ROM-able zImage formats
1301           normally set this to a suitable value in their defconfig file.
1302
1303           If ZBOOT_ROM is not enabled, this has no effect.
1304
1305 config ZBOOT_ROM
1306         bool "Compressed boot loader in ROM/flash"
1307         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1308         help
1309           Say Y here if you intend to execute your compressed kernel image
1310           (zImage) directly from ROM or flash.  If unsure, say N.
1311
1312 config CMDLINE
1313         string "Default kernel command string"
1314         default ""
1315         help
1316           On some architectures (EBSA110 and CATS), there is currently no way
1317           for the boot loader to pass arguments to the kernel. For these
1318           architectures, you should supply some command-line options at build
1319           time by entering them here. As a minimum, you should specify the
1320           memory size and the root device (e.g., mem=64M root=/dev/nfs).
1321
1322 config XIP_KERNEL
1323         bool "Kernel Execute-In-Place from ROM"
1324         depends on !ZBOOT_ROM
1325         help
1326           Execute-In-Place allows the kernel to run from non-volatile storage
1327           directly addressable by the CPU, such as NOR flash. This saves RAM
1328           space since the text section of the kernel is not loaded from flash
1329           to RAM.  Read-write sections, such as the data section and stack,
1330           are still copied to RAM.  The XIP kernel is not compressed since
1331           it has to run directly from flash, so it will take more space to
1332           store it.  The flash address used to link the kernel object files,
1333           and for storing it, is configuration dependent. Therefore, if you
1334           say Y here, you must know the proper physical address where to
1335           store the kernel image depending on your own flash memory usage.
1336
1337           Also note that the make target becomes "make xipImage" rather than
1338           "make zImage" or "make Image".  The final kernel binary to put in
1339           ROM memory will be arch/arm/boot/xipImage.
1340
1341           If unsure, say N.
1342
1343 config XIP_PHYS_ADDR
1344         hex "XIP Kernel Physical Location"
1345         depends on XIP_KERNEL
1346         default "0x00080000"
1347         help
1348           This is the physical address in your flash memory the kernel will
1349           be linked for and stored to.  This address is dependent on your
1350           own flash usage.
1351
1352 config KEXEC
1353         bool "Kexec system call (EXPERIMENTAL)"
1354         depends on EXPERIMENTAL
1355         help
1356           kexec is a system call that implements the ability to shutdown your
1357           current kernel, and to start another kernel.  It is like a reboot
1358           but it is independent of the system firmware.   And like a reboot
1359           you can start any kernel with it, not just Linux.
1360
1361           It is an ongoing process to be certain the hardware in a machine
1362           is properly shutdown, so do not be surprised if this code does not
1363           initially work for you.  It may help to enable device hotplugging
1364           support.
1365
1366 config ATAGS_PROC
1367         bool "Export atags in procfs"
1368         depends on KEXEC
1369         default y
1370         help
1371           Should the atags used to boot the kernel be exported in an "atags"
1372           file in procfs. Useful with kexec.
1373
1374 endmenu
1375
1376 menu "CPU Power Management"
1377
1378 if ARCH_HAS_CPUFREQ
1379
1380 source "drivers/cpufreq/Kconfig"
1381
1382 config CPU_FREQ_SA1100
1383         bool
1384
1385 config CPU_FREQ_SA1110
1386         bool
1387
1388 config CPU_FREQ_INTEGRATOR
1389         tristate "CPUfreq driver for ARM Integrator CPUs"
1390         depends on ARCH_INTEGRATOR && CPU_FREQ
1391         default y
1392         help
1393           This enables the CPUfreq driver for ARM Integrator CPUs.
1394
1395           For details, take a look at <file:Documentation/cpu-freq>.
1396
1397           If in doubt, say Y.
1398
1399 config CPU_FREQ_PXA
1400         bool
1401         depends on CPU_FREQ && ARCH_PXA && PXA25x
1402         default y
1403         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1404
1405 config CPU_FREQ_S3C64XX
1406         bool "CPUfreq support for Samsung S3C64XX CPUs"
1407         depends on CPU_FREQ && CPU_S3C6410
1408
1409 config CPU_FREQ_S3C
1410         bool
1411         help
1412           Internal configuration node for common cpufreq on Samsung SoC
1413
1414 config CPU_FREQ_S3C24XX
1415         bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1416         depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1417         select CPU_FREQ_S3C
1418         help
1419           This enables the CPUfreq driver for the Samsung S3C24XX family
1420           of CPUs.
1421
1422           For details, take a look at <file:Documentation/cpu-freq>.
1423
1424           If in doubt, say N.
1425
1426 config CPU_FREQ_S3C24XX_PLL
1427         bool "Support CPUfreq changing of PLL frequency"
1428         depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1429         help
1430           Compile in support for changing the PLL frequency from the
1431           S3C24XX series CPUfreq driver. The PLL takes time to settle
1432           after a frequency change, so by default it is not enabled.
1433
1434           This also means that the PLL tables for the selected CPU(s) will
1435           be built which may increase the size of the kernel image.
1436
1437 config CPU_FREQ_S3C24XX_DEBUG
1438         bool "Debug CPUfreq Samsung driver core"
1439         depends on CPU_FREQ_S3C24XX
1440         help
1441           Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1442
1443 config CPU_FREQ_S3C24XX_IODEBUG
1444         bool "Debug CPUfreq Samsung driver IO timing"
1445         depends on CPU_FREQ_S3C24XX
1446         help
1447           Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1448
1449 config CPU_FREQ_S3C24XX_DEBUGFS
1450         bool "Export debugfs for CPUFreq"
1451         depends on CPU_FREQ_S3C24XX && DEBUG_FS
1452         help
1453           Export status information via debugfs.
1454
1455 endif
1456
1457 source "drivers/cpuidle/Kconfig"
1458
1459 endmenu
1460
1461 menu "Floating point emulation"
1462
1463 comment "At least one emulation must be selected"
1464
1465 config FPE_NWFPE
1466         bool "NWFPE math emulation"
1467         depends on !AEABI || OABI_COMPAT
1468         ---help---
1469           Say Y to include the NWFPE floating point emulator in the kernel.
1470           This is necessary to run most binaries. Linux does not currently
1471           support floating point hardware so you need to say Y here even if
1472           your machine has an FPA or floating point co-processor podule.
1473
1474           You may say N here if you are going to load the Acorn FPEmulator
1475           early in the bootup.
1476
1477 config FPE_NWFPE_XP
1478         bool "Support extended precision"
1479         depends on FPE_NWFPE
1480         help
1481           Say Y to include 80-bit support in the kernel floating-point
1482           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1483           Note that gcc does not generate 80-bit operations by default,
1484           so in most cases this option only enlarges the size of the
1485           floating point emulator without any good reason.
1486
1487           You almost surely want to say N here.
1488
1489 config FPE_FASTFPE
1490         bool "FastFPE math emulation (EXPERIMENTAL)"
1491         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1492         ---help---
1493           Say Y here to include the FAST floating point emulator in the kernel.
1494           This is an experimental much faster emulator which now also has full
1495           precision for the mantissa.  It does not support any exceptions.
1496           It is very simple, and approximately 3-6 times faster than NWFPE.
1497
1498           It should be sufficient for most programs.  It may be not suitable
1499           for scientific calculations, but you have to check this for yourself.
1500           If you do not feel you need a faster FP emulation you should better
1501           choose NWFPE.
1502
1503 config VFP
1504         bool "VFP-format floating point maths"
1505         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1506         help
1507           Say Y to include VFP support code in the kernel. This is needed
1508           if your hardware includes a VFP unit.
1509
1510           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1511           release notes and additional status information.
1512
1513           Say N if your target does not have VFP hardware.
1514
1515 config VFPv3
1516         bool
1517         depends on VFP
1518         default y if CPU_V7
1519
1520 config NEON
1521         bool "Advanced SIMD (NEON) Extension support"
1522         depends on VFPv3 && CPU_V7
1523         help
1524           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1525           Extension.
1526
1527 endmenu
1528
1529 menu "Userspace binary formats"
1530
1531 source "fs/Kconfig.binfmt"
1532
1533 config ARTHUR
1534         tristate "RISC OS personality"
1535         depends on !AEABI
1536         help
1537           Say Y here to include the kernel code necessary if you want to run
1538           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1539           experimental; if this sounds frightening, say N and sleep in peace.
1540           You can also say M here to compile this support as a module (which
1541           will be called arthur).
1542
1543 endmenu
1544
1545 menu "Power management options"
1546
1547 source "kernel/power/Kconfig"
1548
1549 config ARCH_SUSPEND_POSSIBLE
1550         def_bool y
1551
1552 endmenu
1553
1554 source "net/Kconfig"
1555
1556 source "drivers/Kconfig"
1557
1558 source "fs/Kconfig"
1559
1560 source "arch/arm/Kconfig.debug"
1561
1562 source "security/Kconfig"
1563
1564 source "crypto/Kconfig"
1565
1566 source "lib/Kconfig"