arch/alpha/Kconfig

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