arch/alpha/Kconfig

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