linux/arch/alpha/Kconfig
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   1config ALPHA
   2        bool
   3        default y
   4        select ARCH_MIGHT_HAVE_PC_PARPORT
   5        select ARCH_MIGHT_HAVE_PC_SERIO
   6        select HAVE_AOUT
   7        select HAVE_IDE
   8        select HAVE_OPROFILE
   9        select HAVE_PCSPKR_PLATFORM
  10        select HAVE_PERF_EVENTS
  11        select HAVE_DMA_ATTRS
  12        select VIRT_TO_BUS
  13        select GENERIC_IRQ_PROBE
  14        select AUTO_IRQ_AFFINITY if SMP
  15        select GENERIC_IRQ_SHOW
  16        select ARCH_WANT_OPTIONAL_GPIOLIB
  17        select ARCH_WANT_IPC_PARSE_VERSION
  18        select ARCH_HAVE_NMI_SAFE_CMPXCHG
  19        select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  20        select AUDIT_ARCH
  21        select GENERIC_CLOCKEVENTS
  22        select GENERIC_SMP_IDLE_THREAD
  23        select GENERIC_STRNCPY_FROM_USER
  24        select GENERIC_STRNLEN_USER
  25        select HAVE_ARCH_AUDITSYSCALL
  26        select HAVE_MOD_ARCH_SPECIFIC
  27        select MODULES_USE_ELF_RELA
  28        select ODD_RT_SIGACTION
  29        select OLD_SIGSUSPEND
  30        help
  31          The Alpha is a 64-bit general-purpose processor designed and
  32          marketed by the Digital Equipment Corporation of blessed memory,
  33          now Hewlett-Packard.  The Alpha Linux project has a home page at
  34          <http://www.alphalinux.org/>.
  35
  36config 64BIT
  37        def_bool y
  38
  39config MMU
  40        bool
  41        default y
  42
  43config RWSEM_GENERIC_SPINLOCK
  44        bool
  45
  46config RWSEM_XCHGADD_ALGORITHM
  47        bool
  48        default y
  49
  50config ARCH_HAS_ILOG2_U32
  51        bool
  52        default n
  53
  54config ARCH_HAS_ILOG2_U64
  55        bool
  56        default n
  57
  58config GENERIC_CALIBRATE_DELAY
  59        bool
  60        default y
  61
  62config ZONE_DMA
  63        bool
  64        default y
  65
  66config ARCH_DMA_ADDR_T_64BIT
  67        def_bool y
  68
  69config NEED_DMA_MAP_STATE
  70       def_bool y
  71
  72config NEED_SG_DMA_LENGTH
  73        def_bool y
  74
  75config GENERIC_ISA_DMA
  76        bool
  77        default y
  78
  79source "init/Kconfig"
  80source "kernel/Kconfig.freezer"
  81
  82config AUDIT_ARCH
  83        bool
  84
  85menu "System setup"
  86
  87choice
  88        prompt "Alpha system type"
  89        default ALPHA_GENERIC
  90        ---help---
  91          This is the system type of your hardware.  A "generic" kernel will
  92          run on any supported Alpha system. However, if you configure a
  93          kernel for your specific system, it will be faster and smaller.
  94
  95          To find out what type of Alpha system you have, you may want to
  96          check out the Linux/Alpha FAQ, accessible on the WWW from
  97          <http://www.alphalinux.org/>. In summary:
  98
  99          Alcor/Alpha-XLT     AS 600, AS 500, XL-300, XL-366
 100          Alpha-XL            XL-233, XL-266
 101          AlphaBook1          Alpha laptop
 102          Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
 103          Cabriolet           AlphaPC64, AlphaPCI64
 104          DP264               DP264 / DS20 / ES40 / DS10 / DS10L
 105          EB164               EB164 21164 evaluation board
 106          EB64+               EB64+ 21064 evaluation board
 107          EB66                EB66 21066 evaluation board
 108          EB66+               EB66+ 21066 evaluation board
 109          Jensen              DECpc 150, DEC 2000 models 300, 500
 110          LX164               AlphaPC164-LX
 111          Lynx                AS 2100A
 112          Miata               Personal Workstation 433/500/600 a/au
 113          Marvel              AlphaServer ES47 / ES80 / GS1280
 114          Mikasa              AS 1000
 115          Noname              AXPpci33, UDB (Multia)
 116          Noritake            AS 1000A, AS 600A, AS 800
 117          PC164               AlphaPC164
 118          Rawhide             AS 1200, AS 4000, AS 4100
 119          Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
 120          SX164               AlphaPC164-SX
 121          Sable               AS 2000, AS 2100
 122          Shark               DS 20L
 123          Takara              Takara (OEM)
 124          Titan               AlphaServer ES45 / DS25 / DS15
 125          Wildfire            AlphaServer GS 40/80/160/320
 126
 127          If you don't know what to do, choose "generic".
 128
 129config ALPHA_GENERIC
 130        bool "Generic"
 131        depends on TTY
 132        help
 133          A generic kernel will run on all supported Alpha hardware.
 134
 135config ALPHA_ALCOR
 136        bool "Alcor/Alpha-XLT"
 137        help
 138          For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
 139          slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
 140          Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
 141          controller (256-bit memory bus) and a PCI interface.  It also does
 142          all the work required to support an external Bcache and to maintain
 143          memory coherence when a PCI device DMAs into (or out of) memory.
 144
 145config ALPHA_XL
 146        bool "Alpha-XL"
 147        help
 148          XL-233 and XL-266-based Alpha systems.
 149
 150config ALPHA_BOOK1
 151        bool "AlphaBook1"
 152        help
 153          Dec AlphaBook1/Burns Alpha-based laptops.
 154
 155config ALPHA_AVANTI_CH
 156        bool "Avanti"
 157
 158config ALPHA_CABRIOLET
 159        bool "Cabriolet"
 160        help
 161          Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
 162          baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
 163          slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
 164          Bcache SIMMs.  Requires power supply with 3.3V output.
 165
 166config ALPHA_DP264
 167        bool "DP264"
 168        help
 169          Various 21264 systems with the tsunami core logic chipset.
 170          API Networks: 264DP, UP2000(+), CS20;
 171          Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 172
 173config ALPHA_EB164
 174        bool "EB164"
 175        help
 176          EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
 177          ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
 178          shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
 179          Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
 180          MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
 181          motherboard.  Requires power supply with 3.3V output.
 182
 183config ALPHA_EB64P_CH
 184        bool "EB64+"
 185
 186config ALPHA_EB66
 187        bool "EB66"
 188        help
 189          A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
 190          identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
 191          supply.  The EB66 schematic was published as a marketing poster
 192          advertising the 21066 as "the first microprocessor in the world with
 193          embedded PCI".
 194
 195config ALPHA_EB66P
 196        bool "EB66+"
 197        help
 198          Later variant of the EB66 board.
 199
 200config ALPHA_EIGER
 201        bool "Eiger"
 202        help
 203          Apparently an obscure OEM single-board computer based on the
 204          Typhoon/Tsunami chipset family. Information on it is scanty.
 205
 206config ALPHA_JENSEN
 207        bool "Jensen"
 208        help
 209          DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 210          of the first-generation Alpha systems. A number of these systems
 211          seem to be available on the second- hand market. The Jensen is a
 212          floor-standing tower system which originally used a 150MHz 21064 It
 213          used programmable logic to interface a 486 EISA I/O bridge to the
 214          CPU.
 215
 216config ALPHA_LX164
 217        bool "LX164"
 218        help
 219          A technical overview of this board is available at
 220          <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 221
 222config ALPHA_LYNX
 223        bool "Lynx"
 224        help
 225          AlphaServer 2100A-based systems.
 226
 227config ALPHA_MARVEL
 228        bool "Marvel"
 229        help
 230          AlphaServer ES47 / ES80 / GS1280 based on EV7.
 231
 232config ALPHA_MIATA
 233        bool "Miata"
 234        help
 235          The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
 236          or 600au).
 237
 238config ALPHA_MIKASA
 239        bool "Mikasa"
 240        help
 241          AlphaServer 1000-based Alpha systems.
 242
 243config ALPHA_NAUTILUS
 244        bool "Nautilus"
 245        help
 246          Alpha systems based on the AMD 751 & ALI 1543C chipsets.
 247
 248config ALPHA_NONAME_CH
 249        bool "Noname"
 250
 251config ALPHA_NORITAKE
 252        bool "Noritake"
 253        help
 254          AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
 255          systems.
 256
 257config ALPHA_PC164
 258        bool "PC164"
 259
 260config ALPHA_P2K
 261        bool "Platform2000"
 262
 263config ALPHA_RAWHIDE
 264        bool "Rawhide"
 265        help
 266          AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
 267          See HOWTO at
 268          <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
 269
 270config ALPHA_RUFFIAN
 271        bool "Ruffian"
 272        help
 273          Samsung APC164UX.  There is a page on known problems and workarounds
 274          at <http://www.alphalinux.org/faq/FAQ-11.html>.
 275
 276config ALPHA_RX164
 277        bool "RX164"
 278
 279config ALPHA_SX164
 280        bool "SX164"
 281
 282config ALPHA_SABLE
 283        bool "Sable"
 284        help
 285          Digital AlphaServer 2000 and 2100-based systems.
 286
 287config ALPHA_SHARK
 288        bool "Shark"
 289
 290config ALPHA_TAKARA
 291        bool "Takara"
 292        help
 293          Alpha 11164-based OEM single-board computer.
 294
 295config ALPHA_TITAN
 296        bool "Titan"
 297        help
 298          AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
 299
 300config ALPHA_WILDFIRE
 301        bool "Wildfire"
 302        help
 303          AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
 304
 305endchoice
 306
 307# clear all implied options (don't want default values for those):
 308# Most of these machines have ISA slots; not exactly sure which don't,
 309# and this doesn't activate hordes of code, so do it always.
 310config ISA
 311        bool
 312        default y
 313        help
 314          Find out whether you have ISA slots on your motherboard.  ISA is the
 315          name of a bus system, i.e. the way the CPU talks to the other stuff
 316          inside your box.  Other bus systems are PCI, EISA, MicroChannel
 317          (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 318          newer boards don't support it.  If you have ISA, say Y, otherwise N.
 319
 320config ISA_DMA_API
 321        bool
 322        default y
 323
 324config PCI
 325        bool
 326        depends on !ALPHA_JENSEN
 327        select GENERIC_PCI_IOMAP
 328        default y
 329        help
 330          Find out whether you have a PCI motherboard. PCI is the name of a
 331          bus system, i.e. the way the CPU talks to the other stuff inside
 332          your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 333          VESA. If you have PCI, say Y, otherwise N.
 334
 335config PCI_DOMAINS
 336        bool
 337        default y
 338
 339config PCI_SYSCALL
 340        def_bool PCI
 341
 342config IOMMU_HELPER
 343        def_bool PCI
 344
 345config ALPHA_NONAME
 346        bool
 347        depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
 348        default y
 349        help
 350          The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
 351          UDB).  This design was produced by Digital's Technical OEM (TOEM)
 352          group. It uses the 21066 processor running at 166MHz or 233MHz. It
 353          is a baby-AT size, and runs from a standard PC power supply. It has
 354          5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
 355          2 versions, with either PS/2 or large DIN connectors for the
 356          keyboard.
 357
 358config ALPHA_EV4
 359        bool
 360        depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
 361        default y if !ALPHA_LYNX
 362
 363config ALPHA_LCA
 364        bool
 365        depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
 366        default y
 367
 368config ALPHA_APECS
 369        bool
 370        depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
 371        default y
 372
 373config ALPHA_EB64P
 374        bool
 375        depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
 376        default y
 377        help
 378          Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
 379          2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
 380          ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
 381          (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
 382          SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
 383          Runs from standard PC power supply.
 384
 385config ALPHA_EV5
 386        bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
 387        default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
 388
 389config ALPHA_EV4
 390        bool
 391        default y if ALPHA_LYNX && !ALPHA_EV5
 392
 393config ALPHA_CIA
 394        bool
 395        depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
 396        default y
 397
 398config ALPHA_EV56
 399        bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
 400        default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
 401
 402config ALPHA_EV56
 403        prompt "EV56 CPU (speed >= 333MHz)?"
 404        depends on ALPHA_NORITAKE || ALPHA_PRIMO
 405
 406config ALPHA_EV56
 407        prompt "EV56 CPU (speed >= 400MHz)?"
 408        depends on ALPHA_RAWHIDE
 409
 410config ALPHA_PRIMO
 411        bool "EV5 CPU daughtercard (model 5/xxx)?"
 412        depends on ALPHA_NORITAKE || ALPHA_MIKASA
 413        help
 414          Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
 415
 416config ALPHA_GAMMA
 417        bool "EV5 CPU(s) (model 5/xxx)?"
 418        depends on ALPHA_SABLE
 419        help
 420          Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
 421
 422config ALPHA_GAMMA
 423        bool
 424        depends on ALPHA_LYNX
 425        default y
 426
 427config ALPHA_T2
 428        bool
 429        depends on ALPHA_SABLE || ALPHA_LYNX
 430        default y
 431
 432config ALPHA_PYXIS
 433        bool
 434        depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
 435        default y
 436
 437config ALPHA_EV6
 438        bool
 439        depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
 440        default y
 441
 442config ALPHA_TSUNAMI
 443        bool
 444        depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
 445        default y
 446
 447config ALPHA_EV67
 448        bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
 449        default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
 450        help
 451          Is this a machine based on the EV67 core?  If in doubt, select N here
 452          and the machine will be treated as an EV6.
 453
 454config ALPHA_MCPCIA
 455        bool
 456        depends on ALPHA_RAWHIDE
 457        default y
 458
 459config ALPHA_POLARIS
 460        bool
 461        depends on ALPHA_RX164
 462        default y
 463
 464config ALPHA_IRONGATE
 465        bool
 466        depends on ALPHA_NAUTILUS
 467        default y
 468
 469config GENERIC_HWEIGHT
 470        bool
 471        default y if !ALPHA_EV67
 472
 473config ALPHA_AVANTI
 474        bool
 475        depends on ALPHA_XL || ALPHA_AVANTI_CH
 476        default y
 477        help
 478          Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
 479          Alphas. Info at
 480          <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
 481
 482config ALPHA_BROKEN_IRQ_MASK
 483        bool
 484        depends on ALPHA_GENERIC || ALPHA_PC164
 485        default y
 486
 487config VGA_HOSE
 488        bool
 489        depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
 490        default y
 491        help
 492          Support VGA on an arbitrary hose; needed for several platforms
 493          which always have multiple hoses, and whose consoles support it.
 494
 495
 496config ALPHA_QEMU
 497        bool "Run under QEMU emulation"
 498        depends on !ALPHA_GENERIC
 499        ---help---
 500          Assume the presence of special features supported by QEMU PALcode
 501          that reduce the overhead of system emulation.
 502
 503          Generic kernels will auto-detect QEMU.  But when building a
 504          system-specific kernel, the assumption is that we want to
 505          elimiate as many runtime tests as possible.
 506
 507          If unsure, say N.
 508
 509
 510config ALPHA_SRM
 511        bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
 512        depends on TTY
 513        default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
 514        ---help---
 515          There are two different types of booting firmware on Alphas: SRM,
 516          which is command line driven, and ARC, which uses menus and arrow
 517          keys. Details about the Linux/Alpha booting process are contained in
 518          the Linux/Alpha FAQ, accessible on the WWW from
 519          <http://www.alphalinux.org/>.
 520
 521          The usual way to load Linux on an Alpha machine is to use MILO
 522          (a bootloader that lets you pass command line parameters to the
 523          kernel just like lilo does for the x86 architecture) which can be
 524          loaded either from ARC or can be installed directly as a permanent
 525          firmware replacement from floppy (which requires changing a certain
 526          jumper on the motherboard). If you want to do either of these, say N
 527          here. If MILO doesn't work on your system (true for Jensen
 528          motherboards), you can bypass it altogether and boot Linux directly
 529          from an SRM console; say Y here in order to do that. Note that you
 530          won't be able to boot from an IDE disk using SRM.
 531
 532          If unsure, say N.
 533
 534config EISA
 535        bool
 536        depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
 537        default y
 538
 539config ARCH_MAY_HAVE_PC_FDC
 540        def_bool y
 541
 542config SMP
 543        bool "Symmetric multi-processing support"
 544        depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
 545        ---help---
 546          This enables support for systems with more than one CPU. If you have
 547          a system with only one CPU, say N. If you have a system with more
 548          than one CPU, say Y.
 549
 550          If you say N here, the kernel will run on uni- and multiprocessor
 551          machines, but will use only one CPU of a multiprocessor machine. If
 552          you say Y here, the kernel will run on many, but not all,
 553          uniprocessor machines. On a uniprocessor machine, the kernel
 554          will run faster if you say N here.
 555
 556          See also the SMP-HOWTO available at
 557          <http://www.tldp.org/docs.html#howto>.
 558
 559          If you don't know what to do here, say N.
 560
 561config HAVE_DEC_LOCK
 562        bool
 563        depends on SMP
 564        default y
 565
 566config NR_CPUS
 567        int "Maximum number of CPUs (2-32)"
 568        range 2 32
 569        depends on SMP
 570        default "32" if ALPHA_GENERIC || ALPHA_MARVEL
 571        default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
 572        help
 573          MARVEL support can handle a maximum of 32 CPUs, all the others
 574          with working support have a maximum of 4 CPUs.
 575
 576config ARCH_DISCONTIGMEM_ENABLE
 577        bool "Discontiguous Memory Support"
 578        help
 579          Say Y to support efficient handling of discontiguous physical memory,
 580          for architectures which are either NUMA (Non-Uniform Memory Access)
 581          or have huge holes in the physical address space for other reasons.
 582          See <file:Documentation/vm/numa> for more.
 583
 584source "mm/Kconfig"
 585
 586config NUMA
 587        bool "NUMA Support (EXPERIMENTAL)"
 588        depends on DISCONTIGMEM && BROKEN
 589        help
 590          Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 591          Access).  This option is for configuring high-end multiprocessor
 592          server machines.  If in doubt, say N.
 593
 594config ALPHA_WTINT
 595        bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
 596        default y if ALPHA_QEMU
 597        default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
 598        default n if !ALPHA_SRM && !ALPHA_GENERIC
 599        default y if SMP
 600        ---help---
 601          The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
 602          to sleep until the next interrupt.  This may reduce the power
 603          consumed, and the heat produced by the computer.  However, it has
 604          the side effect of making the cycle counter unreliable as a timing
 605          device across the sleep.
 606
 607          For emulation under QEMU, definitely say Y here, as we have other
 608          mechanisms for measuring time than the cycle counter.
 609
 610          For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
 611          MILO, sleep mode is not supported so you might as well say N here.
 612
 613          For SMP systems we cannot use the cycle counter for timing anyway,
 614          so you might as well say Y here.
 615
 616          If unsure, say N.
 617
 618config NODES_SHIFT
 619        int
 620        default "7"
 621        depends on NEED_MULTIPLE_NODES
 622
 623# LARGE_VMALLOC is racy, if you *really* need it then fix it first
 624config ALPHA_LARGE_VMALLOC
 625        bool
 626        ---help---
 627          Process creation and other aspects of virtual memory management can
 628          be streamlined if we restrict the kernel to one PGD for all vmalloc
 629          allocations.  This equates to about 8GB.
 630
 631          Under normal circumstances, this is so far and above what is needed
 632          as to be laughable.  However, there are certain applications (such
 633          as benchmark-grade in-kernel web serving) that can make use of as
 634          much vmalloc space as is available.
 635
 636          Say N unless you know you need gobs and gobs of vmalloc space.
 637
 638config VERBOSE_MCHECK
 639        bool "Verbose Machine Checks"
 640
 641config VERBOSE_MCHECK_ON
 642        int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 643        depends on VERBOSE_MCHECK
 644        default 1
 645        ---help---
 646          This option allows the default printing mode to be set, and then
 647          possibly overridden by a boot command argument.
 648
 649          For example, if one wanted the option of printing verbose
 650          machine checks, but wanted the default to be as if verbose
 651          machine check printing was turned off, then one would choose
 652          the printing mode to be 0. Then, upon reboot, one could add
 653          the boot command line "verbose_mcheck=1" to get the normal
 654          verbose machine check printing, or "verbose_mcheck=2" to get
 655          the maximum information available.
 656
 657          Take the default (1) unless you want more control or more info.
 658
 659choice
 660        prompt "Timer interrupt frequency (HZ)?"
 661        default HZ_128 if ALPHA_QEMU
 662        default HZ_1200 if ALPHA_RAWHIDE
 663        default HZ_1024
 664        ---help---
 665          The frequency at which timer interrupts occur.  A high frequency
 666          minimizes latency, whereas a low frequency minimizes overhead of
 667          process accounting.  The later effect is especially significant
 668          when being run under QEMU.
 669
 670          Note that some Alpha hardware cannot change the interrupt frequency
 671          of the timer.  If unsure, say 1024 (or 1200 for Rawhide).
 672
 673        config HZ_32
 674                bool "32 Hz"
 675        config HZ_64
 676                bool "64 Hz"
 677        config HZ_128
 678                bool "128 Hz"
 679        config HZ_256
 680                bool "256 Hz"
 681        config HZ_1024
 682                bool "1024 Hz"
 683        config HZ_1200
 684                bool "1200 Hz"
 685endchoice
 686
 687config HZ
 688        int 
 689        default 32 if HZ_32
 690        default 64 if HZ_64
 691        default 128 if HZ_128
 692        default 256 if HZ_256
 693        default 1200 if HZ_1200
 694        default 1024
 695
 696source "drivers/pci/Kconfig"
 697source "drivers/eisa/Kconfig"
 698
 699source "drivers/pcmcia/Kconfig"
 700
 701config SRM_ENV
 702        tristate "SRM environment through procfs"
 703        depends on PROC_FS
 704        ---help---
 705          If you enable this option, a subdirectory inside /proc called
 706          /proc/srm_environment will give you access to the all important
 707          SRM environment variables (those which have a name) and also
 708          to all others (by their internal number).
 709
 710          SRM is something like a BIOS for Alpha machines. There are some
 711          other such BIOSes, like AlphaBIOS, which this driver cannot
 712          support (hey, that's not SRM!).
 713
 714          Despite the fact that this driver doesn't work on all Alphas (but
 715          only on those which have SRM as their firmware), it's save to
 716          build it even if your particular machine doesn't know about SRM
 717          (or if you intend to compile a generic kernel). It will simply
 718          not create those subdirectory in /proc (and give you some warning,
 719          of course).
 720
 721          This driver is also available as a module and will be called
 722          srm_env then.
 723
 724source "fs/Kconfig.binfmt"
 725
 726endmenu
 727
 728source "net/Kconfig"
 729
 730source "drivers/Kconfig"
 731
 732source "fs/Kconfig"
 733
 734source "arch/alpha/Kconfig.debug"
 735
 736# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
 737# but we also need it if VGA_HOSE is set
 738config DUMMY_CONSOLE
 739        bool
 740        depends on VGA_HOSE
 741        default y
 742
 743source "security/Kconfig"
 744
 745source "crypto/Kconfig"
 746
 747source "lib/Kconfig"
 748
 749
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