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_IDE
  12         select RTC_LIB
  13         select SYS_SUPPORTS_APM_EMULATION
  14         select HAVE_OPROFILE
  15         select HAVE_ARCH_KGDB
  16         select HAVE_KPROBES if (!XIP_KERNEL)
  17         select HAVE_KRETPROBES if (HAVE_KPROBES)
  18         select HAVE_FTRACE if (!XIP_KERNEL)
  19         select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
  20         select HAVE_GENERIC_DMA_COHERENT
  21         help
  22           The ARM series is a line of low-power-consumption RISC chip designs
  23           licensed by ARM Ltd and targeted at embedded applications and
  24           handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
  25           manufactured, but legacy ARM-based PC hardware remains popular in
  26           Europe.  There is an ARM Linux project with a web page at
  27           <http://www.arm.linux.org.uk/>.
  28
  29 config HAVE_PWM
  30         bool
  31
  32 config SYS_SUPPORTS_APM_EMULATION
  33         bool
  34
  35 config GENERIC_GPIO
  36         bool
  37         default n
  38
  39 config GENERIC_TIME
  40         bool
  41         default n
  42
  43 config GENERIC_CLOCKEVENTS
  44         bool
  45         default n
  46
  47 config GENERIC_CLOCKEVENTS_BROADCAST
  48         bool
  49         depends on GENERIC_CLOCKEVENTS
  50         default y if SMP && !LOCAL_TIMERS
  51
  52 config MMU
  53         bool
  54         default y
  55
  56 config NO_IOPORT
  57         bool
  58         default n
  59
  60 config EISA
  61         bool
  62         ---help---
  63           The Extended Industry Standard Architecture (EISA) bus was
  64           developed as an open alternative to the IBM MicroChannel bus.
  65
  66           The EISA bus provided some of the features of the IBM MicroChannel
  67           bus while maintaining backward compatibility with cards made for
  68           the older ISA bus.  The EISA bus saw limited use between 1988 and
  69           1995 when it was made obsolete by the PCI bus.
  70
  71           Say Y here if you are building a kernel for an EISA-based machine.
  72
  73           Otherwise, say N.
  74
  75 config SBUS
  76         bool
  77
  78 config MCA
  79         bool
  80         help
  81           MicroChannel Architecture is found in some IBM PS/2 machines and
  82           laptops.  It is a bus system similar to PCI or ISA. See
  83           <file:Documentation/mca.txt> (and especially the web page given
  84           there) before attempting to build an MCA bus kernel.
  85
  86 config GENERIC_HARDIRQS
  87         bool
  88         default y
  89
  90 config STACKTRACE_SUPPORT
  91         bool
  92         default y
  93
  94 config HAVE_LATENCYTOP_SUPPORT
  95         bool
  96         depends on !SMP
  97         default y
  98
  99 config LOCKDEP_SUPPORT
 100         bool
 101         default y
 102
 103 config TRACE_IRQFLAGS_SUPPORT
 104         bool
 105         default y
 106
 107 config HARDIRQS_SW_RESEND
 108         bool
 109         default y
 110
 111 config GENERIC_IRQ_PROBE
 112         bool
 113         default y
 114
 115 config GENERIC_LOCKBREAK
 116         bool
 117         default y
 118         depends on SMP && PREEMPT
 119
 120 config RWSEM_GENERIC_SPINLOCK
 121         bool
 122         default y
 123
 124 config RWSEM_XCHGADD_ALGORITHM
 125         bool
 126
 127 config ARCH_HAS_ILOG2_U32
 128         bool
 129         default n
 130
 131 config ARCH_HAS_ILOG2_U64
 132         bool
 133         default n
 134
 135 config GENERIC_HWEIGHT
 136         bool
 137         default y
 138
 139 config GENERIC_CALIBRATE_DELAY
 140         bool
 141         default y
 142
 143 config ARCH_SUPPORTS_AOUT
 144         def_bool y
 145
 146 config ARCH_MAY_HAVE_PC_FDC
 147         bool
 148
 149 config ZONE_DMA
 150         bool
 151         default y
 152
 153 config GENERIC_ISA_DMA
 154         bool
 155
 156 config FIQ
 157         bool
 158
 159 config ARCH_MTD_XIP
 160         bool
 161
 162 config GENERIC_HARDIRQS_NO__DO_IRQ
 163         bool
 164         def_bool y
 165
 166 if OPROFILE
 167
 168 config OPROFILE_ARMV6
 169         def_bool y
 170         depends on CPU_V6 && !SMP
 171         select OPROFILE_ARM11_CORE
 172
 173 config OPROFILE_MPCORE
 174         def_bool y
 175         depends on CPU_V6 && SMP
 176         select OPROFILE_ARM11_CORE
 177
 178 config OPROFILE_ARM11_CORE
 179         bool
 180
 181 endif
 182
 183 config VECTORS_BASE
 184         hex
 185         default 0xffff0000 if MMU || CPU_HIGH_VECTOR
 186         default DRAM_BASE if REMAP_VECTORS_TO_RAM
 187         default 0x00000000
 188         help
 189           The base address of exception vectors.
 190
 191 source "init/Kconfig"
 192
 193 menu "System Type"
 194
 195 choice
 196         prompt "ARM system type"
 197         default ARCH_VERSATILE
 198
 199 config ARCH_AAEC2000
 200         bool "Agilent AAEC-2000 based"
 201         select ARM_AMBA
 202         select HAVE_CLK
 203         help
 204           This enables support for systems based on the Agilent AAEC-2000
 205
 206 config ARCH_INTEGRATOR
 207         bool "ARM Ltd. Integrator family"
 208         select ARM_AMBA
 209         select HAVE_CLK
 210         select ICST525
 211         help
 212           Support for ARM's Integrator platform.
 213
 214 config ARCH_REALVIEW
 215         bool "ARM Ltd. RealView family"
 216         select ARM_AMBA
 217         select HAVE_CLK
 218         select ICST307
 219         select GENERIC_TIME
 220         select GENERIC_CLOCKEVENTS
 221         help
 222           This enables support for ARM Ltd RealView boards.
 223
 224 config ARCH_VERSATILE
 225         bool "ARM Ltd. Versatile family"
 226         select ARM_AMBA
 227         select ARM_VIC
 228         select HAVE_CLK
 229         select ICST307
 230         select GENERIC_TIME
 231         select GENERIC_CLOCKEVENTS
 232         help
 233           This enables support for ARM Ltd Versatile board.
 234
 235 config ARCH_AT91
 236         bool "Atmel AT91"
 237         select GENERIC_GPIO
 238         select HAVE_CLK
 239         help
 240           This enables support for systems based on the Atmel AT91RM9200,
 241           AT91SAM9 and AT91CAP9 processors.
 242
 243 config ARCH_CLPS7500
 244         bool "Cirrus CL-PS7500FE"
 245         select TIMER_ACORN
 246         select ISA
 247         select NO_IOPORT
 248         help
 249           Support for the Cirrus Logic PS7500FE system-on-a-chip.
 250
 251 config ARCH_CLPS711X
 252         bool "Cirrus Logic CLPS711x/EP721x-based"
 253         help
 254           Support for Cirrus Logic 711x/721x based boards.
 255
 256 config ARCH_EBSA110
 257         bool "EBSA-110"
 258         select ISA
 259         select NO_IOPORT
 260         help
 261           This is an evaluation board for the StrongARM processor available
 262           from Digital. It has limited hardware on-board, including an
 263           Ethernet interface, two PCMCIA sockets, two serial ports and a
 264           parallel port.
 265
 266 config ARCH_EP93XX
 267         bool "EP93xx-based"
 268         select ARM_AMBA
 269         select ARM_VIC
 270         select GENERIC_GPIO
 271         select HAVE_CLK
 272         select ARCH_REQUIRE_GPIOLIB
 273         help
 274           This enables support for the Cirrus EP93xx series of CPUs.
 275
 276 config ARCH_FOOTBRIDGE
 277         bool "FootBridge"
 278         select FOOTBRIDGE
 279         help
 280           Support for systems based on the DC21285 companion chip
 281           ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
 282
 283 config ARCH_NETX
 284         bool "Hilscher NetX based"
 285         select ARM_VIC
 286         help
 287           This enables support for systems based on the Hilscher NetX Soc
 288
 289 config ARCH_H720X
 290         bool "Hynix HMS720x-based"
 291         select ISA_DMA_API
 292         help
 293           This enables support for systems based on the Hynix HMS720x
 294
 295 config ARCH_IMX
 296         bool "IMX"
 297         select GENERIC_GPIO
 298         select GENERIC_TIME
 299         select GENERIC_CLOCKEVENTS
 300         help
 301           Support for Motorola's i.MX family of processors (MX1, MXL).
 302
 303 config ARCH_IOP13XX
 304         bool "IOP13xx-based"
 305         depends on MMU
 306         select PLAT_IOP
 307         select PCI
 308         select ARCH_SUPPORTS_MSI
 309         help
 310           Support for Intel's IOP13XX (XScale) family of processors.
 311
 312 config ARCH_IOP32X
 313         bool "IOP32x-based"
 314         depends on MMU
 315         select PLAT_IOP
 316         select PCI
 317         select GENERIC_GPIO
 318         select ARCH_REQUIRE_GPIOLIB
 319         help
 320           Support for Intel's 80219 and IOP32X (XScale) family of
 321           processors.
 322
 323 config ARCH_IOP33X
 324         bool "IOP33x-based"
 325         depends on MMU
 326         select PLAT_IOP
 327         select PCI
 328         select GENERIC_GPIO
 329         select ARCH_REQUIRE_GPIOLIB
 330         help
 331           Support for Intel's IOP33X (XScale) family of processors.
 332
 333 config ARCH_IXP23XX
 334         bool "IXP23XX-based"
 335         depends on MMU
 336         select PCI
 337         help
 338           Support for Intel's IXP23xx (XScale) family of processors.
 339
 340 config ARCH_IXP2000
 341         bool "IXP2400/2800-based"
 342         depends on MMU
 343         select PCI
 344         help
 345           Support for Intel's IXP2400/2800 (XScale) family of processors.
 346
 347 config ARCH_IXP4XX
 348         bool "IXP4xx-based"
 349         depends on MMU
 350         select GENERIC_GPIO
 351         select GENERIC_TIME
 352         select GENERIC_CLOCKEVENTS
 353         help
 354           Support for Intel's IXP4XX (XScale) family of processors.
 355
 356 config ARCH_L7200
 357         bool "LinkUp-L7200"
 358         select FIQ
 359         help
 360           Say Y here if you intend to run this kernel on a LinkUp Systems
 361           L7200 Software Development Board which uses an ARM720T processor.
 362           Information on this board can be obtained at:
 363
 364           <http://www.linkupsys.com/>
 365
 366           If you have any questions or comments about the Linux kernel port
 367           to this board, send e-mail to <sjhill@cotw.com>.
 368
 369 config ARCH_KIRKWOOD
 370         bool "Marvell Kirkwood"
 371         select PCI
 372         select GENERIC_TIME
 373         select GENERIC_CLOCKEVENTS
 374         select PLAT_ORION
 375         help
 376           Support for the following Marvell Kirkwood series SoCs:
 377           88F6180, 88F6192 and 88F6281.
 378
 379 config ARCH_KS8695
 380         bool "Micrel/Kendin KS8695"
 381         select GENERIC_GPIO
 382         help
 383           Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
 384           System-on-Chip devices.
 385
 386 config ARCH_NS9XXX
 387         bool "NetSilicon NS9xxx"
 388         select GENERIC_GPIO
 389         select GENERIC_TIME
 390         select GENERIC_CLOCKEVENTS
 391         select HAVE_CLK
 392         help
 393           Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
 394           System.
 395
 396           <http://www.digi.com/products/microprocessors/index.jsp>
 397
 398 config ARCH_LOKI
 399         bool "Marvell Loki (88RC8480)"
 400         select GENERIC_TIME
 401         select GENERIC_CLOCKEVENTS
 402         select PLAT_ORION
 403         help
 404           Support for the Marvell Loki (88RC8480) SoC.
 405
 406 config ARCH_MV78XX0
 407         bool "Marvell MV78xx0"
 408         select PCI
 409         select GENERIC_TIME
 410         select GENERIC_CLOCKEVENTS
 411         select PLAT_ORION
 412         help
 413           Support for the following Marvell MV78xx0 series SoCs:
 414           MV781x0, MV782x0.
 415
 416 config ARCH_MXC
 417         bool "Freescale MXC/iMX-based"
 418         select GENERIC_TIME
 419         select GENERIC_CLOCKEVENTS
 420         select ARCH_MTD_XIP
 421         select GENERIC_GPIO
 422         select ARCH_REQUIRE_GPIOLIB
 423         help
 424           Support for Freescale MXC/iMX-based family of processors
 425
 426 config ARCH_ORION5X
 427         bool "Marvell Orion"
 428         depends on MMU
 429         select PCI
 430         select GENERIC_GPIO
 431         select GENERIC_TIME
 432         select GENERIC_CLOCKEVENTS
 433         select PLAT_ORION
 434         help
 435           Support for the following Marvell Orion 5x series SoCs:
 436           Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
 437           Orion-2 (5281).
 438
 439 config ARCH_PNX4008
 440         bool "Philips Nexperia PNX4008 Mobile"
 441         select HAVE_CLK
 442         help
 443           This enables support for Philips PNX4008 mobile platform.
 444
 445 config ARCH_PXA
 446         bool "PXA2xx/PXA3xx-based"
 447         depends on MMU
 448         select ARCH_MTD_XIP
 449         select GENERIC_GPIO
 450         select HAVE_CLK
 451         select ARCH_REQUIRE_GPIOLIB
 452         select GENERIC_TIME
 453         select GENERIC_CLOCKEVENTS
 454         select TICK_ONESHOT
 455         help
 456           Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
 457
 458 config ARCH_RPC
 459         bool "RiscPC"
 460         select ARCH_ACORN
 461         select FIQ
 462         select TIMER_ACORN
 463         select ARCH_MAY_HAVE_PC_FDC
 464         select HAVE_PATA_PLATFORM
 465         select ISA_DMA_API
 466         select NO_IOPORT
 467         help
 468           On the Acorn Risc-PC, Linux can support the internal IDE disk and
 469           CD-ROM interface, serial and parallel port, and the floppy drive.
 470
 471 config ARCH_SA1100
 472         bool "SA1100-based"
 473         select ISA
 474         select ARCH_DISCONTIGMEM_ENABLE
 475         select ARCH_SPARSEMEM_ENABLE
 476         select ARCH_SELECT_MEMORY_MODEL
 477         select ARCH_MTD_XIP
 478         select GENERIC_GPIO
 479         select GENERIC_TIME
 480         select GENERIC_CLOCKEVENTS
 481         select HAVE_CLK
 482         select TICK_ONESHOT
 483         select ARCH_REQUIRE_GPIOLIB
 484         help
 485           Support for StrongARM 11x0 based boards.
 486
 487 config ARCH_S3C2410
 488         bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
 489         select GENERIC_GPIO
 490         select HAVE_CLK
 491         help
 492           Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 493           BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
 494           the Samsung SMDK2410 development board (and derivatives).
 495
 496 config ARCH_SHARK
 497         bool "Shark"
 498         select ISA
 499         select ISA_DMA
 500         select PCI
 501         help
 502           Support for the StrongARM based Digital DNARD machine, also known
 503           as "Shark" (<http://www.shark-linux.de/shark.html>).
 504
 505 config ARCH_LH7A40X
 506         bool "Sharp LH7A40X"
 507         help
 508           Say Y here for systems based on one of the Sharp LH7A40X
 509           System on a Chip processors.  These CPUs include an ARM922T
 510           core with a wide array of integrated devices for
 511           hand-held and low-power applications.
 512
 513 config ARCH_DAVINCI
 514         bool "TI DaVinci"
 515         select GENERIC_TIME
 516         select GENERIC_CLOCKEVENTS
 517         select GENERIC_GPIO
 518         select HAVE_CLK
 519         help
 520           Support for TI's DaVinci platform.
 521
 522 config ARCH_OMAP
 523         bool "TI OMAP"
 524         select GENERIC_GPIO
 525         select HAVE_CLK
 526         select ARCH_REQUIRE_GPIOLIB
 527         select GENERIC_TIME
 528         select GENERIC_CLOCKEVENTS
 529         help
 530           Support for TI's OMAP platform (OMAP1 and OMAP2).
 531
 532 config ARCH_MSM7X00A
 533         bool "Qualcomm MSM7X00A"
 534         select GENERIC_TIME
 535         select GENERIC_CLOCKEVENTS
 536         help
 537           Support for Qualcomm MSM7X00A based systems.  This runs on the ARM11
 538           apps processor of the MSM7X00A and depends on a shared memory
 539           interface to the ARM9 modem processor which runs the baseband stack
 540           and controls some vital subsystems (clock and power control, etc).
 541           <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
 542
 543 endchoice
 544
 545 source "arch/arm/mach-clps711x/Kconfig"
 546
 547 source "arch/arm/mach-ep93xx/Kconfig"
 548
 549 source "arch/arm/mach-footbridge/Kconfig"
 550
 551 source "arch/arm/mach-integrator/Kconfig"
 552
 553 source "arch/arm/mach-iop32x/Kconfig"
 554
 555 source "arch/arm/mach-iop33x/Kconfig"
 556
 557 source "arch/arm/mach-iop13xx/Kconfig"
 558
 559 source "arch/arm/mach-ixp4xx/Kconfig"
 560
 561 source "arch/arm/mach-ixp2000/Kconfig"
 562
 563 source "arch/arm/mach-ixp23xx/Kconfig"
 564
 565 source "arch/arm/mach-loki/Kconfig"
 566
 567 source "arch/arm/mach-mv78xx0/Kconfig"
 568
 569 source "arch/arm/mach-pxa/Kconfig"
 570
 571 source "arch/arm/mach-sa1100/Kconfig"
 572
 573 source "arch/arm/plat-omap/Kconfig"
 574
 575 source "arch/arm/mach-omap1/Kconfig"
 576
 577 source "arch/arm/mach-omap2/Kconfig"
 578
 579 source "arch/arm/mach-orion5x/Kconfig"
 580
 581 source "arch/arm/mach-kirkwood/Kconfig"
 582
 583 source "arch/arm/plat-s3c24xx/Kconfig"
 584 source "arch/arm/plat-s3c/Kconfig"
 585
 586 if ARCH_S3C2410
 587 source "arch/arm/mach-s3c2400/Kconfig"
 588 source "arch/arm/mach-s3c2410/Kconfig"
 589 source "arch/arm/mach-s3c2412/Kconfig"
 590 source "arch/arm/mach-s3c2440/Kconfig"
 591 source "arch/arm/mach-s3c2442/Kconfig"
 592 source "arch/arm/mach-s3c2443/Kconfig"
 593 endif
 594
 595 source "arch/arm/mach-lh7a40x/Kconfig"
 596
 597 source "arch/arm/mach-imx/Kconfig"
 598
 599 source "arch/arm/mach-h720x/Kconfig"
 600
 601 source "arch/arm/mach-versatile/Kconfig"
 602
 603 source "arch/arm/mach-aaec2000/Kconfig"
 604
 605 source "arch/arm/mach-realview/Kconfig"
 606
 607 source "arch/arm/mach-at91/Kconfig"
 608
 609 source "arch/arm/plat-mxc/Kconfig"
 610
 611 source "arch/arm/mach-netx/Kconfig"
 612
 613 source "arch/arm/mach-ns9xxx/Kconfig"
 614
 615 source "arch/arm/mach-davinci/Kconfig"
 616
 617 source "arch/arm/mach-ks8695/Kconfig"
 618
 619 source "arch/arm/mach-msm/Kconfig"
 620
 621 # Definitions to make life easier
 622 config ARCH_ACORN
 623         bool
 624
 625 config PLAT_IOP
 626         bool
 627
 628 config PLAT_ORION
 629         bool
 630
 631 source arch/arm/mm/Kconfig
 632
 633 config IWMMXT
 634         bool "Enable iWMMXt support"
 635         depends on CPU_XSCALE || CPU_XSC3
 636         default y if PXA27x || PXA3xx
 637         help
 638           Enable support for iWMMXt context switching at run time if
 639           running on a CPU that supports it.
 640
 641 #  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
 642 config XSCALE_PMU
 643         bool
 644         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
 645         default y
 646
 647 if !MMU
 648 source "arch/arm/Kconfig-nommu"
 649 endif
 650
 651 endmenu
 652
 653 source "arch/arm/common/Kconfig"
 654
 655 config FORCE_MAX_ZONEORDER
 656         int
 657         depends on SA1111
 658         default "9"
 659
 660 menu "Bus support"
 661
 662 config ARM_AMBA
 663         bool
 664
 665 config ISA
 666         bool
 667         help
 668           Find out whether you have ISA slots on your motherboard.  ISA is the
 669           name of a bus system, i.e. the way the CPU talks to the other stuff
 670           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 671           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 672           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 673
 674 # Select ISA DMA controller support
 675 config ISA_DMA
 676         bool
 677         select ISA_DMA_API
 678
 679 # Select ISA DMA interface
 680 config ISA_DMA_API
 681         bool
 682
 683 config PCI
 684         bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
 685         help
 686           Find out whether you have a PCI motherboard. PCI is the name of a
 687           bus system, i.e. the way the CPU talks to the other stuff inside
 688           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 689           VESA. If you have PCI, say Y, otherwise N.
 690
 691 config PCI_SYSCALL
 692         def_bool PCI
 693
 694 # Select the host bridge type
 695 config PCI_HOST_VIA82C505
 696         bool
 697         depends on PCI && ARCH_SHARK
 698         default y
 699
 700 config PCI_HOST_ITE8152
 701         bool
 702         depends on PCI && MACH_ARMCORE
 703         default y
 704         select DMABOUNCE
 705
 706 source "drivers/pci/Kconfig"
 707
 708 source "drivers/pcmcia/Kconfig"
 709
 710 endmenu
 711
 712 menu "Kernel Features"
 713
 714 source "kernel/time/Kconfig"
 715
 716 config SMP
 717         bool "Symmetric Multi-Processing (EXPERIMENTAL)"
 718         depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
 719         select USE_GENERIC_SMP_HELPERS
 720         help
 721           This enables support for systems with more than one CPU. If you have
 722           a system with only one CPU, like most personal computers, say N. If
 723           you have a system with more than one CPU, say Y.
 724
 725           If you say N here, the kernel will run on single and multiprocessor
 726           machines, but will use only one CPU of a multiprocessor machine. If
 727           you say Y here, the kernel will run on many, but not all, single
 728           processor machines. On a single processor machine, the kernel will
 729           run faster if you say N here.
 730
 731           See also <file:Documentation/i386/IO-APIC.txt>,
 732           <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
 733           <http://www.linuxdoc.org/docs.html#howto>.
 734
 735           If you don't know what to do here, say N.
 736
 737 config NR_CPUS
 738         int "Maximum number of CPUs (2-32)"
 739         range 2 32
 740         depends on SMP
 741         default "4"
 742
 743 config HOTPLUG_CPU
 744         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 745         depends on SMP && HOTPLUG && EXPERIMENTAL
 746         help
 747           Say Y here to experiment with turning CPUs off and on.  CPUs
 748           can be controlled through /sys/devices/system/cpu.
 749
 750 config LOCAL_TIMERS
 751         bool "Use local timer interrupts"
 752         depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
 753         default y
 754         help
 755           Enable support for local timers on SMP platforms, rather then the
 756           legacy IPI broadcast method.  Local timers allows the system
 757           accounting to be spread across the timer interval, preventing a
 758           "thundering herd" at every timer tick.
 759
 760 config PREEMPT
 761         bool "Preemptible Kernel (EXPERIMENTAL)"
 762         depends on EXPERIMENTAL
 763         help
 764           This option reduces the latency of the kernel when reacting to
 765           real-time or interactive events by allowing a low priority process to
 766           be preempted even if it is in kernel mode executing a system call.
 767           This allows applications to run more reliably even when the system is
 768           under load.
 769
 770           Say Y here if you are building a kernel for a desktop, embedded
 771           or real-time system.  Say N if you are unsure.
 772
 773 config HZ
 774         int
 775         default 128 if ARCH_L7200
 776         default 200 if ARCH_EBSA110 || ARCH_S3C2410
 777         default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
 778         default AT91_TIMER_HZ if ARCH_AT91
 779         default 100
 780
 781 config AEABI
 782         bool "Use the ARM EABI to compile the kernel"
 783         help
 784           This option allows for the kernel to be compiled using the latest
 785           ARM ABI (aka EABI).  This is only useful if you are using a user
 786           space environment that is also compiled with EABI.
 787
 788           Since there are major incompatibilities between the legacy ABI and
 789           EABI, especially with regard to structure member alignment, this
 790           option also changes the kernel syscall calling convention to
 791           disambiguate both ABIs and allow for backward compatibility support
 792           (selected with CONFIG_OABI_COMPAT).
 793
 794           To use this you need GCC version 4.0.0 or later.
 795
 796 config OABI_COMPAT
 797         bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
 798         depends on AEABI && EXPERIMENTAL
 799         default y
 800         help
 801           This option preserves the old syscall interface along with the
 802           new (ARM EABI) one. It also provides a compatibility layer to
 803           intercept syscalls that have structure arguments which layout
 804           in memory differs between the legacy ABI and the new ARM EABI
 805           (only for non "thumb" binaries). This option adds a tiny
 806           overhead to all syscalls and produces a slightly larger kernel.
 807           If you know you'll be using only pure EABI user space then you
 808           can say N here. If this option is not selected and you attempt
 809           to execute a legacy ABI binary then the result will be
 810           UNPREDICTABLE (in fact it can be predicted that it won't work
 811           at all). If in doubt say Y.
 812
 813 config ARCH_FLATMEM_HAS_HOLES
 814         bool
 815         default y
 816         depends on FLATMEM
 817
 818 config ARCH_DISCONTIGMEM_ENABLE
 819         bool
 820         default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
 821         help
 822           Say Y to support efficient handling of discontiguous physical memory,
 823           for architectures which are either NUMA (Non-Uniform Memory Access)
 824           or have huge holes in the physical address space for other reasons.
 825           See <file:Documentation/vm/numa> for more.
 826
 827 config ARCH_SPARSEMEM_ENABLE
 828         bool
 829
 830 config ARCH_SELECT_MEMORY_MODEL
 831         bool
 832
 833 config NODES_SHIFT
 834         int
 835         default "4" if ARCH_LH7A40X
 836         default "2"
 837         depends on NEED_MULTIPLE_NODES
 838
 839 source "mm/Kconfig"
 840
 841 config LEDS
 842         bool "Timer and CPU usage LEDs"
 843         depends on ARCH_CDB89712 || ARCH_EBSA110 || \
 844                    ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
 845                    ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
 846                    ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
 847                    ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
 848                    ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
 849                    ARCH_KS8695 || MACH_RD88F5182
 850         help
 851           If you say Y here, the LEDs on your machine will be used
 852           to provide useful information about your current system status.
 853
 854           If you are compiling a kernel for a NetWinder or EBSA-285, you will
 855           be able to select which LEDs are active using the options below. If
 856           you are compiling a kernel for the EBSA-110 or the LART however, the
 857           red LED will simply flash regularly to indicate that the system is
 858           still functional. It is safe to say Y here if you have a CATS
 859           system, but the driver will do nothing.
 860
 861 config LEDS_TIMER
 862         bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
 863                             OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
 864                             || MACH_OMAP_PERSEUS2
 865         depends on LEDS
 866         depends on !GENERIC_CLOCKEVENTS
 867         default y if ARCH_EBSA110
 868         help
 869           If you say Y here, one of the system LEDs (the green one on the
 870           NetWinder, the amber one on the EBSA285, or the red one on the LART)
 871           will flash regularly to indicate that the system is still
 872           operational. This is mainly useful to kernel hackers who are
 873           debugging unstable kernels.
 874
 875           The LART uses the same LED for both Timer LED and CPU usage LED
 876           functions. You may choose to use both, but the Timer LED function
 877           will overrule the CPU usage LED.
 878
 879 config LEDS_CPU
 880         bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
 881                         !ARCH_OMAP) \
 882                         || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
 883                         || MACH_OMAP_PERSEUS2
 884         depends on LEDS
 885         help
 886           If you say Y here, the red LED will be used to give a good real
 887           time indication of CPU usage, by lighting whenever the idle task
 888           is not currently executing.
 889
 890           The LART uses the same LED for both Timer LED and CPU usage LED
 891           functions. You may choose to use both, but the Timer LED function
 892           will overrule the CPU usage LED.
 893
 894 config ALIGNMENT_TRAP
 895         bool
 896         depends on CPU_CP15_MMU
 897         default y if !ARCH_EBSA110
 898         help
 899           ARM processors cannot fetch/store information which is not
 900           naturally aligned on the bus, i.e., a 4 byte fetch must start at an
 901           address divisible by 4. On 32-bit ARM processors, these non-aligned
 902           fetch/store instructions will be emulated in software if you say
 903           here, which has a severe performance impact. This is necessary for
 904           correct operation of some network protocols. With an IP-only
 905           configuration it is safe to say N, otherwise say Y.
 906
 907 endmenu
 908
 909 menu "Boot options"
 910
 911 # Compressed boot loader in ROM.  Yes, we really want to ask about
 912 # TEXT and BSS so we preserve their values in the config files.
 913 config ZBOOT_ROM_TEXT
 914         hex "Compressed ROM boot loader base address"
 915         default "0"
 916         help
 917           The physical address at which the ROM-able zImage is to be
 918           placed in the target.  Platforms which normally make use of
 919           ROM-able zImage formats normally set this to a suitable
 920           value in their defconfig file.
 921
 922           If ZBOOT_ROM is not enabled, this has no effect.
 923
 924 config ZBOOT_ROM_BSS
 925         hex "Compressed ROM boot loader BSS address"
 926         default "0"
 927         help
 928           The base address of an area of read/write memory in the target
 929           for the ROM-able zImage which must be available while the
 930           decompressor is running. It must be large enough to hold the
 931           entire decompressed kernel plus an additional 128 KiB.
 932           Platforms which normally make use of ROM-able zImage formats
 933           normally set this to a suitable value in their defconfig file.
 934
 935           If ZBOOT_ROM is not enabled, this has no effect.
 936
 937 config ZBOOT_ROM
 938         bool "Compressed boot loader in ROM/flash"
 939         depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
 940         help
 941           Say Y here if you intend to execute your compressed kernel image
 942           (zImage) directly from ROM or flash.  If unsure, say N.
 943
 944 config CMDLINE
 945         string "Default kernel command string"
 946         default ""
 947         help
 948           On some architectures (EBSA110 and CATS), there is currently no way
 949           for the boot loader to pass arguments to the kernel. For these
 950           architectures, you should supply some command-line options at build
 951           time by entering them here. As a minimum, you should specify the
 952           memory size and the root device (e.g., mem=64M root=/dev/nfs).
 953
 954 config XIP_KERNEL
 955         bool "Kernel Execute-In-Place from ROM"
 956         depends on !ZBOOT_ROM
 957         help
 958           Execute-In-Place allows the kernel to run from non-volatile storage
 959           directly addressable by the CPU, such as NOR flash. This saves RAM
 960           space since the text section of the kernel is not loaded from flash
 961           to RAM.  Read-write sections, such as the data section and stack,
 962           are still copied to RAM.  The XIP kernel is not compressed since
 963           it has to run directly from flash, so it will take more space to
 964           store it.  The flash address used to link the kernel object files,
 965           and for storing it, is configuration dependent. Therefore, if you
 966           say Y here, you must know the proper physical address where to
 967           store the kernel image depending on your own flash memory usage.
 968
 969           Also note that the make target becomes "make xipImage" rather than
 970           "make zImage" or "make Image".  The final kernel binary to put in
 971           ROM memory will be arch/arm/boot/xipImage.
 972
 973           If unsure, say N.
 974
 975 config XIP_PHYS_ADDR
 976         hex "XIP Kernel Physical Location"
 977         depends on XIP_KERNEL
 978         default "0x00080000"
 979         help
 980           This is the physical address in your flash memory the kernel will
 981           be linked for and stored to.  This address is dependent on your
 982           own flash usage.
 983
 984 config KEXEC
 985         bool "Kexec system call (EXPERIMENTAL)"
 986         depends on EXPERIMENTAL
 987         help
 988           kexec is a system call that implements the ability to shutdown your
 989           current kernel, and to start another kernel.  It is like a reboot
 990           but it is independent of the system firmware.   And like a reboot
 991           you can start any kernel with it, not just Linux.
 992
 993           It is an ongoing process to be certain the hardware in a machine
 994           is properly shutdown, so do not be surprised if this code does not
 995           initially work for you.  It may help to enable device hotplugging
 996           support.
 997
 998 config ATAGS_PROC
 999         bool "Export atags in procfs"
1000         depends on KEXEC
1001         default y
1002         help
1003           Should the atags used to boot the kernel be exported in an "atags"
1004           file in procfs. Useful with kexec.
1005
1006 endmenu
1007
1008 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1009
1010 menu "CPU Frequency scaling"
1011
1012 source "drivers/cpufreq/Kconfig"
1013
1014 config CPU_FREQ_SA1100
1015         bool
1016         depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1017         default y
1018
1019 config CPU_FREQ_SA1110
1020         bool
1021         depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1022         default y
1023
1024 config CPU_FREQ_INTEGRATOR
1025         tristate "CPUfreq driver for ARM Integrator CPUs"
1026         depends on ARCH_INTEGRATOR && CPU_FREQ
1027         default y
1028         help
1029           This enables the CPUfreq driver for ARM Integrator CPUs.
1030
1031           For details, take a look at <file:Documentation/cpu-freq>.
1032
1033           If in doubt, say Y.
1034
1035 config CPU_FREQ_IMX
1036         tristate "CPUfreq driver for i.MX CPUs"
1037         depends on ARCH_IMX && CPU_FREQ
1038         default n
1039         help
1040           This enables the CPUfreq driver for i.MX CPUs.
1041
1042           If in doubt, say N.
1043
1044 config CPU_FREQ_PXA
1045         bool
1046         depends on CPU_FREQ && ARCH_PXA && PXA25x
1047         default y
1048         select CPU_FREQ_DEFAULT_GOV_USERSPACE
1049
1050 endmenu
1051
1052 endif
1053
1054 menu "Floating point emulation"
1055
1056 comment "At least one emulation must be selected"
1057
1058 config FPE_NWFPE
1059         bool "NWFPE math emulation"
1060         depends on !AEABI || OABI_COMPAT
1061         ---help---
1062           Say Y to include the NWFPE floating point emulator in the kernel.
1063           This is necessary to run most binaries. Linux does not currently
1064           support floating point hardware so you need to say Y here even if
1065           your machine has an FPA or floating point co-processor podule.
1066
1067           You may say N here if you are going to load the Acorn FPEmulator
1068           early in the bootup.
1069
1070 config FPE_NWFPE_XP
1071         bool "Support extended precision"
1072         depends on FPE_NWFPE
1073         help
1074           Say Y to include 80-bit support in the kernel floating-point
1075           emulator.  Otherwise, only 32 and 64-bit support is compiled in.
1076           Note that gcc does not generate 80-bit operations by default,
1077           so in most cases this option only enlarges the size of the
1078           floating point emulator without any good reason.
1079
1080           You almost surely want to say N here.
1081
1082 config FPE_FASTFPE
1083         bool "FastFPE math emulation (EXPERIMENTAL)"
1084         depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1085         ---help---
1086           Say Y here to include the FAST floating point emulator in the kernel.
1087           This is an experimental much faster emulator which now also has full
1088           precision for the mantissa.  It does not support any exceptions.
1089           It is very simple, and approximately 3-6 times faster than NWFPE.
1090
1091           It should be sufficient for most programs.  It may be not suitable
1092           for scientific calculations, but you have to check this for yourself.
1093           If you do not feel you need a faster FP emulation you should better
1094           choose NWFPE.
1095
1096 config VFP
1097         bool "VFP-format floating point maths"
1098         depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1099         help
1100           Say Y to include VFP support code in the kernel. This is needed
1101           if your hardware includes a VFP unit.
1102
1103           Please see <file:Documentation/arm/VFP/release-notes.txt> for
1104           release notes and additional status information.
1105
1106           Say N if your target does not have VFP hardware.
1107
1108 config VFPv3
1109         bool
1110         depends on VFP
1111         default y if CPU_V7
1112
1113 config NEON
1114         bool "Advanced SIMD (NEON) Extension support"
1115         depends on VFPv3 && CPU_V7
1116         help
1117           Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1118           Extension.
1119
1120 endmenu
1121
1122 menu "Userspace binary formats"
1123
1124 source "fs/Kconfig.binfmt"
1125
1126 config ARTHUR
1127         tristate "RISC OS personality"
1128         depends on !AEABI
1129         help
1130           Say Y here to include the kernel code necessary if you want to run
1131           Acorn RISC OS/Arthur binaries under Linux. This code is still very
1132           experimental; if this sounds frightening, say N and sleep in peace.
1133           You can also say M here to compile this support as a module (which
1134           will be called arthur).
1135
1136 endmenu
1137
1138 menu "Power management options"
1139
1140 source "kernel/power/Kconfig"
1141
1142 config ARCH_SUSPEND_POSSIBLE
1143         def_bool y
1144
1145 endmenu
1146
1147 source "net/Kconfig"
1148
1149 menu "Device Drivers"
1150
1151 source "drivers/base/Kconfig"
1152
1153 source "drivers/connector/Kconfig"
1154
1155 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1156 source "drivers/mtd/Kconfig"
1157 endif
1158
1159 source "drivers/parport/Kconfig"
1160
1161 source "drivers/pnp/Kconfig"
1162
1163 source "drivers/block/Kconfig"
1164
1165 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1166
1167 source "drivers/misc/Kconfig"
1168
1169 source "drivers/ide/Kconfig"
1170
1171 source "drivers/scsi/Kconfig"
1172
1173 source "drivers/ata/Kconfig"
1174
1175 source "drivers/md/Kconfig"
1176
1177 source "drivers/message/fusion/Kconfig"
1178
1179 source "drivers/ieee1394/Kconfig"
1180
1181 source "drivers/message/i2o/Kconfig"
1182
1183 source "drivers/net/Kconfig"
1184
1185 source "drivers/isdn/Kconfig"
1186
1187 # input before char - char/joystick depends on it. As does USB.
1188
1189 source "drivers/input/Kconfig"
1190
1191 source "drivers/char/Kconfig"
1192
1193 source "drivers/i2c/Kconfig"
1194
1195 source "drivers/spi/Kconfig"
1196
1197 source "drivers/gpio/Kconfig"
1198
1199 source "drivers/w1/Kconfig"
1200
1201 source "drivers/power/Kconfig"
1202
1203 source "drivers/hwmon/Kconfig"
1204
1205 source "drivers/watchdog/Kconfig"
1206
1207 source "drivers/ssb/Kconfig"
1208
1209 #source "drivers/l3/Kconfig"
1210
1211 source "drivers/mfd/Kconfig"
1212
1213 source "drivers/media/Kconfig"
1214
1215 source "drivers/video/Kconfig"
1216
1217 source "sound/Kconfig"
1218
1219 source "drivers/hid/Kconfig"
1220
1221 source "drivers/usb/Kconfig"
1222
1223 source "drivers/mmc/Kconfig"
1224
1225 source "drivers/leds/Kconfig"
1226
1227 source "drivers/rtc/Kconfig"
1228
1229 source "drivers/dma/Kconfig"
1230
1231 source "drivers/dca/Kconfig"
1232
1233 source "drivers/regulator/Kconfig"
1234
1235 source "drivers/uio/Kconfig"
1236
1237 endmenu
1238
1239 source "fs/Kconfig"
1240
1241 source "arch/arm/Kconfig.debug"
1242
1243 source "security/Kconfig"
1244
1245 source "crypto/Kconfig"
1246
1247 source "lib/Kconfig"