arch/alpha/Kconfig

   1 config ALPHA
   2         bool
   3         default y
   4         select HAVE_AOUT
   5         select HAVE_IDE
   6         select HAVE_OPROFILE
   7         select HAVE_SYSCALL_WRAPPERS
   8         select HAVE_PERF_EVENTS
   9         select HAVE_DMA_ATTRS
  10         help
  11           The Alpha is a 64-bit general-purpose processor designed and
  12           marketed by the Digital Equipment Corporation of blessed memory,
  13           now Hewlett-Packard.  The Alpha Linux project has a home page at
  14           <http://www.alphalinux.org/>.
  15
  16 config 64BIT
  17         def_bool y
  18
  19 config MMU
  20         bool
  21         default y
  22
  23 config RWSEM_GENERIC_SPINLOCK
  24         bool
  25
  26 config RWSEM_XCHGADD_ALGORITHM
  27         bool
  28         default y
  29
  30 config ARCH_HAS_ILOG2_U32
  31         bool
  32         default n
  33
  34 config ARCH_HAS_ILOG2_U64
  35         bool
  36         default n
  37
  38 config GENERIC_FIND_NEXT_BIT
  39         bool
  40         default y
  41
  42 config GENERIC_CALIBRATE_DELAY
  43         bool
  44         default y
  45
  46 config GENERIC_TIME
  47         bool
  48         default y
  49
  50 config GENERIC_CMOS_UPDATE
  51         def_bool y
  52
  53 config ZONE_DMA
  54         bool
  55         default y
  56
  57 config NEED_DMA_MAP_STATE
  58        def_bool y
  59
  60 config NEED_SG_DMA_LENGTH
  61         def_bool y
  62
  63 config GENERIC_ISA_DMA
  64         bool
  65         default y
  66
  67 config GENERIC_IOMAP
  68         bool
  69         default n
  70
  71 config GENERIC_HARDIRQS
  72         bool
  73         default y
  74
  75 config GENERIC_IRQ_PROBE
  76         bool
  77         default y
  78
  79 config AUTO_IRQ_AFFINITY
  80         bool
  81         depends on SMP
  82         default y
  83
  84 source "init/Kconfig"
  85 source "kernel/Kconfig.freezer"
  86
  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         help
 135           A generic kernel will run on all supported Alpha hardware.
 136
 137 config ALPHA_ALCOR
 138         bool "Alcor/Alpha-XLT"
 139         help
 140           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
 141           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
 142           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
 143           controller (256-bit memory bus) and a PCI interface.  It also does
 144           all the work required to support an external Bcache and to maintain
 145           memory coherence when a PCI device DMAs into (or out of) memory.
 146
 147 config ALPHA_XL
 148         bool "Alpha-XL"
 149         help
 150           XL-233 and XL-266-based Alpha systems.
 151
 152 config ALPHA_BOOK1
 153         bool "AlphaBook1"
 154         help
 155           Dec AlphaBook1/Burns Alpha-based laptops.
 156
 157 config ALPHA_AVANTI_CH
 158         bool "Avanti"
 159
 160 config ALPHA_CABRIOLET
 161         bool "Cabriolet"
 162         help
 163           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
 164           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
 165           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
 166           Bcache SIMMs.  Requires power supply with 3.3V output.
 167
 168 config ALPHA_DP264
 169         bool "DP264"
 170         help
 171           Various 21264 systems with the tsunami core logic chipset.
 172           API Networks: 264DP, UP2000(+), CS20;
 173           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 174
 175 config ALPHA_EB164
 176         bool "EB164"
 177         help
 178           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
 179           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
 180           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
 181           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
 182           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
 183           motherboard.  Requires power supply with 3.3V output.
 184
 185 config ALPHA_EB64P_CH
 186         bool "EB64+"
 187
 188 config ALPHA_EB66
 189         bool "EB66"
 190         help
 191           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
 192           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
 193           supply.  The EB66 schematic was published as a marketing poster
 194           advertising the 21066 as "the first microprocessor in the world with
 195           embedded PCI".
 196
 197 config ALPHA_EB66P
 198         bool "EB66+"
 199         help
 200           Later variant of the EB66 board.
 201
 202 config ALPHA_EIGER
 203         bool "Eiger"
 204         help
 205           Apparently an obscure OEM single-board computer based on the
 206           Typhoon/Tsunami chipset family. Information on it is scanty.
 207
 208 config ALPHA_JENSEN
 209         bool "Jensen"
 210         help
 211           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 212           of the first-generation Alpha systems. A number of these systems
 213           seem to be available on the second- hand market. The Jensen is a
 214           floor-standing tower system which originally used a 150MHz 21064 It
 215           used programmable logic to interface a 486 EISA I/O bridge to the
 216           CPU.
 217
 218 config ALPHA_LX164
 219         bool "LX164"
 220         help
 221           A technical overview of this board is available at
 222           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 223
 224 config ALPHA_LYNX
 225         bool "Lynx"
 226         help
 227           AlphaServer 2100A-based systems.
 228
 229 config ALPHA_MARVEL
 230         bool "Marvel"
 231         help
 232           AlphaServer ES47 / ES80 / GS1280 based on EV7.
 233
 234 config ALPHA_MIATA
 235         bool "Miata"
 236         help
 237           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
 238           or 600au).
 239
 240 config ALPHA_MIKASA
 241         bool "Mikasa"
 242         help
 243           AlphaServer 1000-based Alpha systems.
 244
 245 config ALPHA_NAUTILUS
 246         bool "Nautilus"
 247         help
 248           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
 249
 250 config ALPHA_NONAME_CH
 251         bool "Noname"
 252
 253 config ALPHA_NORITAKE
 254         bool "Noritake"
 255         help
 256           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
 257           systems.
 258
 259 config ALPHA_PC164
 260         bool "PC164"
 261
 262 config ALPHA_P2K
 263         bool "Platform2000"
 264
 265 config ALPHA_RAWHIDE
 266         bool "Rawhide"
 267         help
 268           AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
 269           See HOWTO at
 270           <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
 271
 272 config ALPHA_RUFFIAN
 273         bool "Ruffian"
 274         help
 275           Samsung APC164UX.  There is a page on known problems and workarounds
 276           at <http://www.alphalinux.org/faq/FAQ-11.html>.
 277
 278 config ALPHA_RX164
 279         bool "RX164"
 280
 281 config ALPHA_SX164
 282         bool "SX164"
 283
 284 config ALPHA_SABLE
 285         bool "Sable"
 286         help
 287           Digital AlphaServer 2000 and 2100-based systems.
 288
 289 config ALPHA_SHARK
 290         bool "Shark"
 291
 292 config ALPHA_TAKARA
 293         bool "Takara"
 294         help
 295           Alpha 11164-based OEM single-board computer.
 296
 297 config ALPHA_TITAN
 298         bool "Titan"
 299         help
 300           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
 301
 302 config ALPHA_WILDFIRE
 303         bool "Wildfire"
 304         help
 305           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
 306
 307 endchoice
 308
 309 # clear all implied options (don't want default values for those):
 310 # Most of these machines have ISA slots; not exactly sure which don't,
 311 # and this doesn't activate hordes of code, so do it always.
 312 config ISA
 313         bool
 314         default y
 315         help
 316           Find out whether you have ISA slots on your motherboard.  ISA is the
 317           name of a bus system, i.e. the way the CPU talks to the other stuff
 318           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 319           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 320           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 321
 322 config ISA_DMA_API
 323         bool
 324         default y
 325
 326 config PCI
 327         bool
 328         depends on !ALPHA_JENSEN
 329         default y
 330         help
 331           Find out whether you have a PCI motherboard. PCI is the name of a
 332           bus system, i.e. the way the CPU talks to the other stuff inside
 333           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 334           VESA. If you have PCI, say Y, otherwise N.
 335
 336 config PCI_DOMAINS
 337         bool
 338         default y
 339
 340 config PCI_SYSCALL
 341         def_bool PCI
 342
 343 config IOMMU_HELPER
 344         def_bool PCI
 345
 346 config ALPHA_NONAME
 347         bool
 348         depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
 349         default y
 350         help
 351           The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
 352           UDB).  This design was produced by Digital's Technical OEM (TOEM)
 353           group. It uses the 21066 processor running at 166MHz or 233MHz. It
 354           is a baby-AT size, and runs from a standard PC power supply. It has
 355           5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
 356           2 versions, with either PS/2 or large DIN connectors for the
 357           keyboard.
 358
 359 config ALPHA_EV4
 360         bool
 361         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
 362         default y if !ALPHA_LYNX
 363
 364 config ALPHA_LCA
 365         bool
 366         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
 367         default y
 368
 369 config ALPHA_APECS
 370         bool
 371         depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
 372         default y
 373
 374 config ALPHA_EB64P
 375         bool
 376         depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
 377         default y
 378         help
 379           Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
 380           2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
 381           ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
 382           (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
 383           SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
 384           Runs from standard PC power supply.
 385
 386 config ALPHA_EV5
 387         bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
 388         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
 389
 390 config ALPHA_EV4
 391         bool
 392         default y if ALPHA_LYNX && !ALPHA_EV5
 393
 394 config ALPHA_CIA
 395         bool
 396         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
 397         default y
 398
 399 config ALPHA_EV56
 400         bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
 401         default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
 402
 403 config ALPHA_EV56
 404         prompt "EV56 CPU (speed >= 333MHz)?"
 405         depends on ALPHA_NORITAKE || ALPHA_PRIMO
 406
 407 config ALPHA_EV56
 408         prompt "EV56 CPU (speed >= 400MHz)?"
 409         depends on ALPHA_RAWHIDE
 410
 411 config ALPHA_PRIMO
 412         bool "EV5 CPU daughtercard (model 5/xxx)?"
 413         depends on ALPHA_NORITAKE || ALPHA_MIKASA
 414         help
 415           Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
 416
 417 config ALPHA_GAMMA
 418         bool "EV5 CPU(s) (model 5/xxx)?"
 419         depends on ALPHA_SABLE
 420         help
 421           Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
 422
 423 config ALPHA_GAMMA
 424         bool
 425         depends on ALPHA_LYNX
 426         default y
 427
 428 config ALPHA_T2
 429         bool
 430         depends on ALPHA_SABLE || ALPHA_LYNX
 431         default y
 432
 433 config ALPHA_PYXIS
 434         bool
 435         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
 436         default y
 437
 438 config ALPHA_EV6
 439         bool
 440         depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
 441         default y
 442
 443 config ALPHA_TSUNAMI
 444         bool
 445         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
 446         default y
 447
 448 config ALPHA_EV67
 449         bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
 450         default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
 451         help
 452           Is this a machine based on the EV67 core?  If in doubt, select N here
 453           and the machine will be treated as an EV6.
 454
 455 config ALPHA_EV7
 456         bool
 457         depends on ALPHA_MARVEL
 458         default y
 459
 460 config ALPHA_MCPCIA
 461         bool
 462         depends on ALPHA_RAWHIDE
 463         default y
 464
 465 config ALPHA_POLARIS
 466         bool
 467         depends on ALPHA_RX164
 468         default y
 469
 470 config ALPHA_IRONGATE
 471         bool
 472         depends on ALPHA_NAUTILUS
 473         default y
 474
 475 config GENERIC_HWEIGHT
 476         bool
 477         default y if !ALPHA_EV67
 478
 479 config ALPHA_AVANTI
 480         bool
 481         depends on ALPHA_XL || ALPHA_AVANTI_CH
 482         default y
 483         help
 484           Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
 485           Alphas. Info at
 486           <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
 487
 488 config ALPHA_BROKEN_IRQ_MASK
 489         bool
 490         depends on ALPHA_GENERIC || ALPHA_PC164
 491         default y
 492
 493 config VGA_HOSE
 494         bool
 495         depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
 496         default y
 497         help
 498           Support VGA on an arbitrary hose; needed for several platforms
 499           which always have multiple hoses, and whose consoles support it.
 500
 501
 502 config ALPHA_SRM
 503         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
 504         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
 505         ---help---
 506           There are two different types of booting firmware on Alphas: SRM,
 507           which is command line driven, and ARC, which uses menus and arrow
 508           keys. Details about the Linux/Alpha booting process are contained in
 509           the Linux/Alpha FAQ, accessible on the WWW from
 510           <http://www.alphalinux.org/>.
 511
 512           The usual way to load Linux on an Alpha machine is to use MILO
 513           (a bootloader that lets you pass command line parameters to the
 514           kernel just like lilo does for the x86 architecture) which can be
 515           loaded either from ARC or can be installed directly as a permanent
 516           firmware replacement from floppy (which requires changing a certain
 517           jumper on the motherboard). If you want to do either of these, say N
 518           here. If MILO doesn't work on your system (true for Jensen
 519           motherboards), you can bypass it altogether and boot Linux directly
 520           from an SRM console; say Y here in order to do that. Note that you
 521           won't be able to boot from an IDE disk using SRM.
 522
 523           If unsure, say N.
 524
 525 config EISA
 526         bool
 527         depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
 528         default y
 529
 530 config ARCH_MAY_HAVE_PC_FDC
 531         def_bool y
 532
 533 config SMP
 534         bool "Symmetric multi-processing support"
 535         depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
 536         select USE_GENERIC_SMP_HELPERS
 537         ---help---
 538           This enables support for systems with more than one CPU. If you have
 539           a system with only one CPU, like most personal computers, say N. If
 540           you have a system with more than one CPU, say Y.
 541
 542           If you say N here, the kernel will run on single and multiprocessor
 543           machines, but will use only one CPU of a multiprocessor machine. If
 544           you say Y here, the kernel will run on many, but not all,
 545           singleprocessor machines. On a singleprocessor machine, the kernel
 546           will run faster if you say N here.
 547
 548           See also the SMP-HOWTO available at
 549           <http://www.tldp.org/docs.html#howto>.
 550
 551           If you don't know what to do here, say N.
 552
 553 config HAVE_DEC_LOCK
 554         bool
 555         depends on SMP
 556         default y
 557
 558 config NR_CPUS
 559         int "Maximum number of CPUs (2-32)"
 560         range 2 32
 561         depends on SMP
 562         default "32" if ALPHA_GENERIC || ALPHA_MARVEL
 563         default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
 564         help
 565           MARVEL support can handle a maximum of 32 CPUs, all the others
 566           with working support have a maximum of 4 CPUs.
 567
 568 config ARCH_DISCONTIGMEM_ENABLE
 569         bool "Discontiguous Memory Support (EXPERIMENTAL)"
 570         depends on EXPERIMENTAL
 571         help
 572           Say Y to support efficient handling of discontiguous physical memory,
 573           for architectures which are either NUMA (Non-Uniform Memory Access)
 574           or have huge holes in the physical address space for other reasons.
 575           See <file:Documentation/vm/numa> for more.
 576
 577 source "mm/Kconfig"
 578
 579 config NUMA
 580         bool "NUMA Support (EXPERIMENTAL)"
 581         depends on DISCONTIGMEM && BROKEN
 582         help
 583           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 584           Access).  This option is for configuring high-end multiprocessor
 585           server machines.  If in doubt, say N.
 586
 587 config NODES_SHIFT
 588         int
 589         default "7"
 590         depends on NEED_MULTIPLE_NODES
 591
 592 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
 593 config ALPHA_LARGE_VMALLOC
 594         bool
 595         ---help---
 596           Process creation and other aspects of virtual memory management can
 597           be streamlined if we restrict the kernel to one PGD for all vmalloc
 598           allocations.  This equates to about 8GB.
 599
 600           Under normal circumstances, this is so far and above what is needed
 601           as to be laughable.  However, there are certain applications (such
 602           as benchmark-grade in-kernel web serving) that can make use of as
 603           much vmalloc space as is available.
 604
 605           Say N unless you know you need gobs and gobs of vmalloc space.
 606
 607 config VERBOSE_MCHECK
 608         bool "Verbose Machine Checks"
 609
 610 config VERBOSE_MCHECK_ON
 611         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 612         depends on VERBOSE_MCHECK
 613         default 1
 614         ---help---
 615           This option allows the default printing mode to be set, and then
 616           possibly overridden by a boot command argument.
 617
 618           For example, if one wanted the option of printing verbose
 619           machine checks, but wanted the default to be as if verbose
 620           machine check printing was turned off, then one would choose
 621           the printing mode to be 0. Then, upon reboot, one could add
 622           the boot command line "verbose_mcheck=1" to get the normal
 623           verbose machine check printing, or "verbose_mcheck=2" to get
 624           the maximum information available.
 625
 626           Take the default (1) unless you want more control or more info.
 627
 628 config HZ
 629         int
 630         default 1200 if ALPHA_RAWHIDE
 631         default 1024
 632
 633 source "drivers/pci/Kconfig"
 634 source "drivers/eisa/Kconfig"
 635
 636 source "drivers/pcmcia/Kconfig"
 637
 638 config SRM_ENV
 639         tristate "SRM environment through procfs"
 640         depends on PROC_FS
 641         ---help---
 642           If you enable this option, a subdirectory inside /proc called
 643           /proc/srm_environment will give you access to the all important
 644           SRM environment variables (those which have a name) and also
 645           to all others (by their internal number).
 646
 647           SRM is something like a BIOS for Alpha machines. There are some
 648           other such BIOSes, like AlphaBIOS, which this driver cannot
 649           support (hey, that's not SRM!).
 650
 651           Despite the fact that this driver doesn't work on all Alphas (but
 652           only on those which have SRM as their firmware), it's save to
 653           build it even if your particular machine doesn't know about SRM
 654           (or if you intend to compile a generic kernel). It will simply
 655           not create those subdirectory in /proc (and give you some warning,
 656           of course).
 657
 658           This driver is also available as a module and will be called
 659           srm_env then.
 660
 661 source "fs/Kconfig.binfmt"
 662
 663 endmenu
 664
 665 source "net/Kconfig"
 666
 667 source "drivers/Kconfig"
 668
 669 source "fs/Kconfig"
 670
 671 source "arch/alpha/Kconfig.debug"
 672
 673 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
 674 # but we also need it if VGA_HOSE is set
 675 config DUMMY_CONSOLE
 676         bool
 677         depends on VGA_HOSE
 678         default y
 679
 680 source "security/Kconfig"
 681
 682 source "crypto/Kconfig"
 683
 684 source "lib/Kconfig"
 685