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_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
  36 config 64BIT
  37         def_bool y
  38
  39 config MMU
  40         bool
  41         default y
  42
  43 config RWSEM_GENERIC_SPINLOCK
  44         bool
  45
  46 config RWSEM_XCHGADD_ALGORITHM
  47         bool
  48         default y
  49
  50 config ARCH_HAS_ILOG2_U32
  51         bool
  52         default n
  53
  54 config ARCH_HAS_ILOG2_U64
  55         bool
  56         default n
  57
  58 config GENERIC_CALIBRATE_DELAY
  59         bool
  60         default y
  61
  62 config ZONE_DMA
  63         bool
  64         default y
  65
  66 config ARCH_DMA_ADDR_T_64BIT
  67         def_bool y
  68
  69 config NEED_DMA_MAP_STATE
  70        def_bool y
  71
  72 config NEED_SG_DMA_LENGTH
  73         def_bool y
  74
  75 config GENERIC_ISA_DMA
  76         bool
  77         default y
  78
  79 config PGTABLE_LEVELS
  80         int
  81         default 3
  82
  83 source "init/Kconfig"
  84 source "kernel/Kconfig.freezer"
  85
  86 config AUDIT_ARCH
  87         bool
  88
  89 menu "System setup"
  90
  91 choice
  92         prompt "Alpha system type"
  93         default ALPHA_GENERIC
  94         ---help---
  95           This is the system type of your hardware.  A "generic" kernel will
  96           run on any supported Alpha system. However, if you configure a
  97           kernel for your specific system, it will be faster and smaller.
  98
  99           To find out what type of Alpha system you have, you may want to
 100           check out the Linux/Alpha FAQ, accessible on the WWW from
 101           <http://www.alphalinux.org/>. In summary:
 102
 103           Alcor/Alpha-XLT     AS 600, AS 500, XL-300, XL-366
 104           Alpha-XL            XL-233, XL-266
 105           AlphaBook1          Alpha laptop
 106           Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
 107           Cabriolet           AlphaPC64, AlphaPCI64
 108           DP264               DP264 / DS20 / ES40 / DS10 / DS10L
 109           EB164               EB164 21164 evaluation board
 110           EB64+               EB64+ 21064 evaluation board
 111           EB66                EB66 21066 evaluation board
 112           EB66+               EB66+ 21066 evaluation board
 113           Jensen              DECpc 150, DEC 2000 models 300, 500
 114           LX164               AlphaPC164-LX
 115           Lynx                AS 2100A
 116           Miata               Personal Workstation 433/500/600 a/au
 117           Marvel              AlphaServer ES47 / ES80 / GS1280
 118           Mikasa              AS 1000
 119           Noname              AXPpci33, UDB (Multia)
 120           Noritake            AS 1000A, AS 600A, AS 800
 121           PC164               AlphaPC164
 122           Rawhide             AS 1200, AS 4000, AS 4100
 123           Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
 124           SX164               AlphaPC164-SX
 125           Sable               AS 2000, AS 2100
 126           Shark               DS 20L
 127           Takara              Takara (OEM)
 128           Titan               AlphaServer ES45 / DS25 / DS15
 129           Wildfire            AlphaServer GS 40/80/160/320
 130
 131           If you don't know what to do, choose "generic".
 132
 133 config ALPHA_GENERIC
 134         bool "Generic"
 135         depends on TTY
 136         help
 137           A generic kernel will run on all supported Alpha hardware.
 138
 139 config ALPHA_ALCOR
 140         bool "Alcor/Alpha-XLT"
 141         help
 142           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
 143           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
 144           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
 145           controller (256-bit memory bus) and a PCI interface.  It also does
 146           all the work required to support an external Bcache and to maintain
 147           memory coherence when a PCI device DMAs into (or out of) memory.
 148
 149 config ALPHA_XL
 150         bool "Alpha-XL"
 151         help
 152           XL-233 and XL-266-based Alpha systems.
 153
 154 config ALPHA_BOOK1
 155         bool "AlphaBook1"
 156         help
 157           Dec AlphaBook1/Burns Alpha-based laptops.
 158
 159 config ALPHA_AVANTI_CH
 160         bool "Avanti"
 161
 162 config ALPHA_CABRIOLET
 163         bool "Cabriolet"
 164         help
 165           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
 166           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
 167           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
 168           Bcache SIMMs.  Requires power supply with 3.3V output.
 169
 170 config ALPHA_DP264
 171         bool "DP264"
 172         help
 173           Various 21264 systems with the tsunami core logic chipset.
 174           API Networks: 264DP, UP2000(+), CS20;
 175           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 176
 177 config ALPHA_EB164
 178         bool "EB164"
 179         help
 180           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
 181           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
 182           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
 183           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
 184           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
 185           motherboard.  Requires power supply with 3.3V output.
 186
 187 config ALPHA_EB64P_CH
 188         bool "EB64+"
 189
 190 config ALPHA_EB66
 191         bool "EB66"
 192         help
 193           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
 194           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
 195           supply.  The EB66 schematic was published as a marketing poster
 196           advertising the 21066 as "the first microprocessor in the world with
 197           embedded PCI".
 198
 199 config ALPHA_EB66P
 200         bool "EB66+"
 201         help
 202           Later variant of the EB66 board.
 203
 204 config ALPHA_EIGER
 205         bool "Eiger"
 206         help
 207           Apparently an obscure OEM single-board computer based on the
 208           Typhoon/Tsunami chipset family. Information on it is scanty.
 209
 210 config ALPHA_JENSEN
 211         bool "Jensen"
 212         help
 213           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 214           of the first-generation Alpha systems. A number of these systems
 215           seem to be available on the second- hand market. The Jensen is a
 216           floor-standing tower system which originally used a 150MHz 21064 It
 217           used programmable logic to interface a 486 EISA I/O bridge to the
 218           CPU.
 219
 220 config ALPHA_LX164
 221         bool "LX164"
 222         help
 223           A technical overview of this board is available at
 224           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 225
 226 config ALPHA_LYNX
 227         bool "Lynx"
 228         help
 229           AlphaServer 2100A-based systems.
 230
 231 config ALPHA_MARVEL
 232         bool "Marvel"
 233         help
 234           AlphaServer ES47 / ES80 / GS1280 based on EV7.
 235
 236 config ALPHA_MIATA
 237         bool "Miata"
 238         help
 239           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
 240           or 600au).
 241
 242 config ALPHA_MIKASA
 243         bool "Mikasa"
 244         help
 245           AlphaServer 1000-based Alpha systems.
 246
 247 config ALPHA_NAUTILUS
 248         bool "Nautilus"
 249         help
 250           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
 251
 252 config ALPHA_NONAME_CH
 253         bool "Noname"
 254
 255 config ALPHA_NORITAKE
 256         bool "Noritake"
 257         help
 258           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
 259           systems.
 260
 261 config ALPHA_PC164
 262         bool "PC164"
 263
 264 config ALPHA_P2K
 265         bool "Platform2000"
 266
 267 config ALPHA_RAWHIDE
 268         bool "Rawhide"
 269         help
 270           AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
 271           See HOWTO at
 272           <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
 273
 274 config ALPHA_RUFFIAN
 275         bool "Ruffian"
 276         help
 277           Samsung APC164UX.  There is a page on known problems and workarounds
 278           at <http://www.alphalinux.org/faq/FAQ-11.html>.
 279
 280 config ALPHA_RX164
 281         bool "RX164"
 282
 283 config ALPHA_SX164
 284         bool "SX164"
 285
 286 config ALPHA_SABLE
 287         bool "Sable"
 288         help
 289           Digital AlphaServer 2000 and 2100-based systems.
 290
 291 config ALPHA_SHARK
 292         bool "Shark"
 293
 294 config ALPHA_TAKARA
 295         bool "Takara"
 296         help
 297           Alpha 11164-based OEM single-board computer.
 298
 299 config ALPHA_TITAN
 300         bool "Titan"
 301         help
 302           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
 303
 304 config ALPHA_WILDFIRE
 305         bool "Wildfire"
 306         help
 307           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
 308
 309 endchoice
 310
 311 # clear all implied options (don't want default values for those):
 312 # Most of these machines have ISA slots; not exactly sure which don't,
 313 # and this doesn't activate hordes of code, so do it always.
 314 config ISA
 315         bool
 316         default y
 317         help
 318           Find out whether you have ISA slots on your motherboard.  ISA is the
 319           name of a bus system, i.e. the way the CPU talks to the other stuff
 320           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 321           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 322           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 323
 324 config ISA_DMA_API
 325         bool
 326         default y
 327
 328 config PCI
 329         bool
 330         depends on !ALPHA_JENSEN
 331         select GENERIC_PCI_IOMAP
 332         default y
 333         help
 334           Find out whether you have a PCI motherboard. PCI is the name of a
 335           bus system, i.e. the way the CPU talks to the other stuff inside
 336           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 337           VESA. If you have PCI, say Y, otherwise N.
 338
 339 config PCI_DOMAINS
 340         bool
 341         default y
 342
 343 config PCI_SYSCALL
 344         def_bool PCI
 345
 346 config IOMMU_HELPER
 347         def_bool PCI
 348
 349 config ALPHA_NONAME
 350         bool
 351         depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
 352         default y
 353         help
 354           The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
 355           UDB).  This design was produced by Digital's Technical OEM (TOEM)
 356           group. It uses the 21066 processor running at 166MHz or 233MHz. It
 357           is a baby-AT size, and runs from a standard PC power supply. It has
 358           5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
 359           2 versions, with either PS/2 or large DIN connectors for the
 360           keyboard.
 361
 362 config ALPHA_EV4
 363         bool
 364         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
 365         default y if !ALPHA_LYNX
 366
 367 config ALPHA_LCA
 368         bool
 369         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
 370         default y
 371
 372 config ALPHA_APECS
 373         bool
 374         depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
 375         default y
 376
 377 config ALPHA_EB64P
 378         bool
 379         depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
 380         default y
 381         help
 382           Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
 383           2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
 384           ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
 385           (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
 386           SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
 387           Runs from standard PC power supply.
 388
 389 config ALPHA_EV5
 390         bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
 391         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
 392
 393 config ALPHA_EV4
 394         bool
 395         default y if ALPHA_LYNX && !ALPHA_EV5
 396
 397 config ALPHA_CIA
 398         bool
 399         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
 400         default y
 401
 402 config ALPHA_EV56
 403         bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
 404         default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
 405
 406 config ALPHA_EV56
 407         prompt "EV56 CPU (speed >= 333MHz)?"
 408         depends on ALPHA_NORITAKE || ALPHA_PRIMO
 409
 410 config ALPHA_EV56
 411         prompt "EV56 CPU (speed >= 400MHz)?"
 412         depends on ALPHA_RAWHIDE
 413
 414 config ALPHA_PRIMO
 415         bool "EV5 CPU daughtercard (model 5/xxx)?"
 416         depends on ALPHA_NORITAKE || ALPHA_MIKASA
 417         help
 418           Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
 419
 420 config ALPHA_GAMMA
 421         bool "EV5 CPU(s) (model 5/xxx)?"
 422         depends on ALPHA_SABLE
 423         help
 424           Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
 425
 426 config ALPHA_GAMMA
 427         bool
 428         depends on ALPHA_LYNX
 429         default y
 430
 431 config ALPHA_T2
 432         bool
 433         depends on ALPHA_SABLE || ALPHA_LYNX
 434         default y
 435
 436 config ALPHA_PYXIS
 437         bool
 438         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
 439         default y
 440
 441 config ALPHA_EV6
 442         bool
 443         depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
 444         default y
 445
 446 config ALPHA_TSUNAMI
 447         bool
 448         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
 449         default y
 450
 451 config ALPHA_EV67
 452         bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
 453         default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
 454         help
 455           Is this a machine based on the EV67 core?  If in doubt, select N here
 456           and the machine will be treated as an EV6.
 457
 458 config ALPHA_MCPCIA
 459         bool
 460         depends on ALPHA_RAWHIDE
 461         default y
 462
 463 config ALPHA_POLARIS
 464         bool
 465         depends on ALPHA_RX164
 466         default y
 467
 468 config ALPHA_IRONGATE
 469         bool
 470         depends on ALPHA_NAUTILUS
 471         default y
 472
 473 config GENERIC_HWEIGHT
 474         bool
 475         default y if !ALPHA_EV67
 476
 477 config ALPHA_AVANTI
 478         bool
 479         depends on ALPHA_XL || ALPHA_AVANTI_CH
 480         default y
 481         help
 482           Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
 483           Alphas. Info at
 484           <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
 485
 486 config ALPHA_BROKEN_IRQ_MASK
 487         bool
 488         depends on ALPHA_GENERIC || ALPHA_PC164
 489         default y
 490
 491 config VGA_HOSE
 492         bool
 493         depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
 494         default y
 495         help
 496           Support VGA on an arbitrary hose; needed for several platforms
 497           which always have multiple hoses, and whose consoles support it.
 498
 499
 500 config ALPHA_QEMU
 501         bool "Run under QEMU emulation"
 502         depends on !ALPHA_GENERIC
 503         ---help---
 504           Assume the presence of special features supported by QEMU PALcode
 505           that reduce the overhead of system emulation.
 506
 507           Generic kernels will auto-detect QEMU.  But when building a
 508           system-specific kernel, the assumption is that we want to
 509           elimiate as many runtime tests as possible.
 510
 511           If unsure, say N.
 512
 513
 514 config ALPHA_SRM
 515         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
 516         depends on TTY
 517         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
 518         ---help---
 519           There are two different types of booting firmware on Alphas: SRM,
 520           which is command line driven, and ARC, which uses menus and arrow
 521           keys. Details about the Linux/Alpha booting process are contained in
 522           the Linux/Alpha FAQ, accessible on the WWW from
 523           <http://www.alphalinux.org/>.
 524
 525           The usual way to load Linux on an Alpha machine is to use MILO
 526           (a bootloader that lets you pass command line parameters to the
 527           kernel just like lilo does for the x86 architecture) which can be
 528           loaded either from ARC or can be installed directly as a permanent
 529           firmware replacement from floppy (which requires changing a certain
 530           jumper on the motherboard). If you want to do either of these, say N
 531           here. If MILO doesn't work on your system (true for Jensen
 532           motherboards), you can bypass it altogether and boot Linux directly
 533           from an SRM console; say Y here in order to do that. Note that you
 534           won't be able to boot from an IDE disk using SRM.
 535
 536           If unsure, say N.
 537
 538 config EISA
 539         bool
 540         depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
 541         default y
 542
 543 config ARCH_MAY_HAVE_PC_FDC
 544         def_bool y
 545
 546 config SMP
 547         bool "Symmetric multi-processing support"
 548         depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
 549         ---help---
 550           This enables support for systems with more than one CPU. If you have
 551           a system with only one CPU, say N. If you have a system with more
 552           than one CPU, say Y.
 553
 554           If you say N here, the kernel will run on uni- and multiprocessor
 555           machines, but will use only one CPU of a multiprocessor machine. If
 556           you say Y here, the kernel will run on many, but not all,
 557           uniprocessor machines. On a uniprocessor machine, the kernel
 558           will run faster if you say N here.
 559
 560           See also the SMP-HOWTO available at
 561           <http://www.tldp.org/docs.html#howto>.
 562
 563           If you don't know what to do here, say N.
 564
 565 config HAVE_DEC_LOCK
 566         bool
 567         depends on SMP
 568         default y
 569
 570 config NR_CPUS
 571         int "Maximum number of CPUs (2-32)"
 572         range 2 32
 573         depends on SMP
 574         default "32" if ALPHA_GENERIC || ALPHA_MARVEL
 575         default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
 576         help
 577           MARVEL support can handle a maximum of 32 CPUs, all the others
 578           with working support have a maximum of 4 CPUs.
 579
 580 config ARCH_DISCONTIGMEM_ENABLE
 581         bool "Discontiguous Memory Support"
 582         help
 583           Say Y to support efficient handling of discontiguous physical memory,
 584           for architectures which are either NUMA (Non-Uniform Memory Access)
 585           or have huge holes in the physical address space for other reasons.
 586           See <file:Documentation/vm/numa> for more.
 587
 588 source "mm/Kconfig"
 589
 590 config NUMA
 591         bool "NUMA Support (EXPERIMENTAL)"
 592         depends on DISCONTIGMEM && BROKEN
 593         help
 594           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 595           Access).  This option is for configuring high-end multiprocessor
 596           server machines.  If in doubt, say N.
 597
 598 config ALPHA_WTINT
 599         bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
 600         default y if ALPHA_QEMU
 601         default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
 602         default n if !ALPHA_SRM && !ALPHA_GENERIC
 603         default y if SMP
 604         ---help---
 605           The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
 606           to sleep until the next interrupt.  This may reduce the power
 607           consumed, and the heat produced by the computer.  However, it has
 608           the side effect of making the cycle counter unreliable as a timing
 609           device across the sleep.
 610
 611           For emulation under QEMU, definitely say Y here, as we have other
 612           mechanisms for measuring time than the cycle counter.
 613
 614           For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
 615           MILO, sleep mode is not supported so you might as well say N here.
 616
 617           For SMP systems we cannot use the cycle counter for timing anyway,
 618           so you might as well say Y here.
 619
 620           If unsure, say N.
 621
 622 config NODES_SHIFT
 623         int
 624         default "7"
 625         depends on NEED_MULTIPLE_NODES
 626
 627 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
 628 config ALPHA_LARGE_VMALLOC
 629         bool
 630         ---help---
 631           Process creation and other aspects of virtual memory management can
 632           be streamlined if we restrict the kernel to one PGD for all vmalloc
 633           allocations.  This equates to about 8GB.
 634
 635           Under normal circumstances, this is so far and above what is needed
 636           as to be laughable.  However, there are certain applications (such
 637           as benchmark-grade in-kernel web serving) that can make use of as
 638           much vmalloc space as is available.
 639
 640           Say N unless you know you need gobs and gobs of vmalloc space.
 641
 642 config VERBOSE_MCHECK
 643         bool "Verbose Machine Checks"
 644
 645 config VERBOSE_MCHECK_ON
 646         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 647         depends on VERBOSE_MCHECK
 648         default 1
 649         ---help---
 650           This option allows the default printing mode to be set, and then
 651           possibly overridden by a boot command argument.
 652
 653           For example, if one wanted the option of printing verbose
 654           machine checks, but wanted the default to be as if verbose
 655           machine check printing was turned off, then one would choose
 656           the printing mode to be 0. Then, upon reboot, one could add
 657           the boot command line "verbose_mcheck=1" to get the normal
 658           verbose machine check printing, or "verbose_mcheck=2" to get
 659           the maximum information available.
 660
 661           Take the default (1) unless you want more control or more info.
 662
 663 choice
 664         prompt "Timer interrupt frequency (HZ)?"
 665         default HZ_128 if ALPHA_QEMU
 666         default HZ_1200 if ALPHA_RAWHIDE
 667         default HZ_1024
 668         ---help---
 669           The frequency at which timer interrupts occur.  A high frequency
 670           minimizes latency, whereas a low frequency minimizes overhead of
 671           process accounting.  The later effect is especially significant
 672           when being run under QEMU.
 673
 674           Note that some Alpha hardware cannot change the interrupt frequency
 675           of the timer.  If unsure, say 1024 (or 1200 for Rawhide).
 676
 677         config HZ_32
 678                 bool "32 Hz"
 679         config HZ_64
 680                 bool "64 Hz"
 681         config HZ_128
 682                 bool "128 Hz"
 683         config HZ_256
 684                 bool "256 Hz"
 685         config HZ_1024
 686                 bool "1024 Hz"
 687         config HZ_1200
 688                 bool "1200 Hz"
 689 endchoice
 690
 691 config HZ
 692         int
 693         default 32 if HZ_32
 694         default 64 if HZ_64
 695         default 128 if HZ_128
 696         default 256 if HZ_256
 697         default 1200 if HZ_1200
 698         default 1024
 699
 700 source "drivers/pci/Kconfig"
 701 source "drivers/eisa/Kconfig"
 702
 703 source "drivers/pcmcia/Kconfig"
 704
 705 config SRM_ENV
 706         tristate "SRM environment through procfs"
 707         depends on PROC_FS
 708         ---help---
 709           If you enable this option, a subdirectory inside /proc called
 710           /proc/srm_environment will give you access to the all important
 711           SRM environment variables (those which have a name) and also
 712           to all others (by their internal number).
 713
 714           SRM is something like a BIOS for Alpha machines. There are some
 715           other such BIOSes, like AlphaBIOS, which this driver cannot
 716           support (hey, that's not SRM!).
 717
 718           Despite the fact that this driver doesn't work on all Alphas (but
 719           only on those which have SRM as their firmware), it's save to
 720           build it even if your particular machine doesn't know about SRM
 721           (or if you intend to compile a generic kernel). It will simply
 722           not create those subdirectory in /proc (and give you some warning,
 723           of course).
 724
 725           This driver is also available as a module and will be called
 726           srm_env then.
 727
 728 source "fs/Kconfig.binfmt"
 729
 730 endmenu
 731
 732 source "net/Kconfig"
 733
 734 source "drivers/Kconfig"
 735
 736 source "fs/Kconfig"
 737
 738 source "arch/alpha/Kconfig.debug"
 739
 740 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
 741 # but we also need it if VGA_HOSE is set
 742 config DUMMY_CONSOLE
 743         bool
 744         depends on VGA_HOSE
 745         default y
 746
 747 source "security/Kconfig"
 748
 749 source "crypto/Kconfig"
 750
 751 source "lib/Kconfig"
 752