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_CMOS_UPDATE
  47         def_bool y
  48
  49 config ZONE_DMA
  50         bool
  51         default y
  52
  53 config NEED_DMA_MAP_STATE
  54        def_bool y
  55
  56 config NEED_SG_DMA_LENGTH
  57         def_bool y
  58
  59 config GENERIC_ISA_DMA
  60         bool
  61         default y
  62
  63 config GENERIC_IOMAP
  64         bool
  65         default n
  66
  67 config GENERIC_HARDIRQS
  68         bool
  69         default y
  70
  71 config GENERIC_IRQ_PROBE
  72         bool
  73         default y
  74
  75 config AUTO_IRQ_AFFINITY
  76         bool
  77         depends on SMP
  78         default y
  79
  80 source "init/Kconfig"
  81 source "kernel/Kconfig.freezer"
  82
  83
  84 menu "System setup"
  85
  86 choice
  87         prompt "Alpha system type"
  88         default ALPHA_GENERIC
  89         ---help---
  90           This is the system type of your hardware.  A "generic" kernel will
  91           run on any supported Alpha system. However, if you configure a
  92           kernel for your specific system, it will be faster and smaller.
  93
  94           To find out what type of Alpha system you have, you may want to
  95           check out the Linux/Alpha FAQ, accessible on the WWW from
  96           <http://www.alphalinux.org/>. In summary:
  97
  98           Alcor/Alpha-XLT     AS 600, AS 500, XL-300, XL-366
  99           Alpha-XL            XL-233, XL-266
 100           AlphaBook1          Alpha laptop
 101           Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
 102           Cabriolet           AlphaPC64, AlphaPCI64
 103           DP264               DP264 / DS20 / ES40 / DS10 / DS10L
 104           EB164               EB164 21164 evaluation board
 105           EB64+               EB64+ 21064 evaluation board
 106           EB66                EB66 21066 evaluation board
 107           EB66+               EB66+ 21066 evaluation board
 108           Jensen              DECpc 150, DEC 2000 models 300, 500
 109           LX164               AlphaPC164-LX
 110           Lynx                AS 2100A
 111           Miata               Personal Workstation 433/500/600 a/au
 112           Marvel              AlphaServer ES47 / ES80 / GS1280
 113           Mikasa              AS 1000
 114           Noname              AXPpci33, UDB (Multia)
 115           Noritake            AS 1000A, AS 600A, AS 800
 116           PC164               AlphaPC164
 117           Rawhide             AS 1200, AS 4000, AS 4100
 118           Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
 119           SX164               AlphaPC164-SX
 120           Sable               AS 2000, AS 2100
 121           Shark               DS 20L
 122           Takara              Takara (OEM)
 123           Titan               AlphaServer ES45 / DS25 / DS15
 124           Wildfire            AlphaServer GS 40/80/160/320
 125
 126           If you don't know what to do, choose "generic".
 127
 128 config ALPHA_GENERIC
 129         bool "Generic"
 130         help
 131           A generic kernel will run on all supported Alpha hardware.
 132
 133 config ALPHA_ALCOR
 134         bool "Alcor/Alpha-XLT"
 135         help
 136           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
 137           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
 138           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
 139           controller (256-bit memory bus) and a PCI interface.  It also does
 140           all the work required to support an external Bcache and to maintain
 141           memory coherence when a PCI device DMAs into (or out of) memory.
 142
 143 config ALPHA_XL
 144         bool "Alpha-XL"
 145         help
 146           XL-233 and XL-266-based Alpha systems.
 147
 148 config ALPHA_BOOK1
 149         bool "AlphaBook1"
 150         help
 151           Dec AlphaBook1/Burns Alpha-based laptops.
 152
 153 config ALPHA_AVANTI_CH
 154         bool "Avanti"
 155
 156 config ALPHA_CABRIOLET
 157         bool "Cabriolet"
 158         help
 159           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
 160           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
 161           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
 162           Bcache SIMMs.  Requires power supply with 3.3V output.
 163
 164 config ALPHA_DP264
 165         bool "DP264"
 166         help
 167           Various 21264 systems with the tsunami core logic chipset.
 168           API Networks: 264DP, UP2000(+), CS20;
 169           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 170
 171 config ALPHA_EB164
 172         bool "EB164"
 173         help
 174           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
 175           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
 176           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
 177           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
 178           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
 179           motherboard.  Requires power supply with 3.3V output.
 180
 181 config ALPHA_EB64P_CH
 182         bool "EB64+"
 183
 184 config ALPHA_EB66
 185         bool "EB66"
 186         help
 187           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
 188           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
 189           supply.  The EB66 schematic was published as a marketing poster
 190           advertising the 21066 as "the first microprocessor in the world with
 191           embedded PCI".
 192
 193 config ALPHA_EB66P
 194         bool "EB66+"
 195         help
 196           Later variant of the EB66 board.
 197
 198 config ALPHA_EIGER
 199         bool "Eiger"
 200         help
 201           Apparently an obscure OEM single-board computer based on the
 202           Typhoon/Tsunami chipset family. Information on it is scanty.
 203
 204 config ALPHA_JENSEN
 205         bool "Jensen"
 206         help
 207           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 208           of the first-generation Alpha systems. A number of these systems
 209           seem to be available on the second- hand market. The Jensen is a
 210           floor-standing tower system which originally used a 150MHz 21064 It
 211           used programmable logic to interface a 486 EISA I/O bridge to the
 212           CPU.
 213
 214 config ALPHA_LX164
 215         bool "LX164"
 216         help
 217           A technical overview of this board is available at
 218           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 219
 220 config ALPHA_LYNX
 221         bool "Lynx"
 222         help
 223           AlphaServer 2100A-based systems.
 224
 225 config ALPHA_MARVEL
 226         bool "Marvel"
 227         help
 228           AlphaServer ES47 / ES80 / GS1280 based on EV7.
 229
 230 config ALPHA_MIATA
 231         bool "Miata"
 232         help
 233           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
 234           or 600au).
 235
 236 config ALPHA_MIKASA
 237         bool "Mikasa"
 238         help
 239           AlphaServer 1000-based Alpha systems.
 240
 241 config ALPHA_NAUTILUS
 242         bool "Nautilus"
 243         help
 244           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
 245
 246 config ALPHA_NONAME_CH
 247         bool "Noname"
 248
 249 config ALPHA_NORITAKE
 250         bool "Noritake"
 251         help
 252           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
 253           systems.
 254
 255 config ALPHA_PC164
 256         bool "PC164"
 257
 258 config ALPHA_P2K
 259         bool "Platform2000"
 260
 261 config ALPHA_RAWHIDE
 262         bool "Rawhide"
 263         help
 264           AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
 265           See HOWTO at
 266           <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
 267
 268 config ALPHA_RUFFIAN
 269         bool "Ruffian"
 270         help
 271           Samsung APC164UX.  There is a page on known problems and workarounds
 272           at <http://www.alphalinux.org/faq/FAQ-11.html>.
 273
 274 config ALPHA_RX164
 275         bool "RX164"
 276
 277 config ALPHA_SX164
 278         bool "SX164"
 279
 280 config ALPHA_SABLE
 281         bool "Sable"
 282         help
 283           Digital AlphaServer 2000 and 2100-based systems.
 284
 285 config ALPHA_SHARK
 286         bool "Shark"
 287
 288 config ALPHA_TAKARA
 289         bool "Takara"
 290         help
 291           Alpha 11164-based OEM single-board computer.
 292
 293 config ALPHA_TITAN
 294         bool "Titan"
 295         help
 296           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
 297
 298 config ALPHA_WILDFIRE
 299         bool "Wildfire"
 300         help
 301           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
 302
 303 endchoice
 304
 305 # clear all implied options (don't want default values for those):
 306 # Most of these machines have ISA slots; not exactly sure which don't,
 307 # and this doesn't activate hordes of code, so do it always.
 308 config ISA
 309         bool
 310         default y
 311         help
 312           Find out whether you have ISA slots on your motherboard.  ISA is the
 313           name of a bus system, i.e. the way the CPU talks to the other stuff
 314           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 315           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 316           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 317
 318 config ISA_DMA_API
 319         bool
 320         default y
 321
 322 config PCI
 323         bool
 324         depends on !ALPHA_JENSEN
 325         default y
 326         help
 327           Find out whether you have a PCI motherboard. PCI is the name of a
 328           bus system, i.e. the way the CPU talks to the other stuff inside
 329           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 330           VESA. If you have PCI, say Y, otherwise N.
 331
 332 config PCI_DOMAINS
 333         bool
 334         default y
 335
 336 config PCI_SYSCALL
 337         def_bool PCI
 338
 339 config IOMMU_HELPER
 340         def_bool PCI
 341
 342 config ALPHA_NONAME
 343         bool
 344         depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
 345         default y
 346         help
 347           The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
 348           UDB).  This design was produced by Digital's Technical OEM (TOEM)
 349           group. It uses the 21066 processor running at 166MHz or 233MHz. It
 350           is a baby-AT size, and runs from a standard PC power supply. It has
 351           5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
 352           2 versions, with either PS/2 or large DIN connectors for the
 353           keyboard.
 354
 355 config ALPHA_EV4
 356         bool
 357         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
 358         default y if !ALPHA_LYNX
 359
 360 config ALPHA_LCA
 361         bool
 362         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
 363         default y
 364
 365 config ALPHA_APECS
 366         bool
 367         depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
 368         default y
 369
 370 config ALPHA_EB64P
 371         bool
 372         depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
 373         default y
 374         help
 375           Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
 376           2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
 377           ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
 378           (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
 379           SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
 380           Runs from standard PC power supply.
 381
 382 config ALPHA_EV5
 383         bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
 384         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
 385
 386 config ALPHA_EV4
 387         bool
 388         default y if ALPHA_LYNX && !ALPHA_EV5
 389
 390 config ALPHA_CIA
 391         bool
 392         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
 393         default y
 394
 395 config ALPHA_EV56
 396         bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
 397         default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
 398
 399 config ALPHA_EV56
 400         prompt "EV56 CPU (speed >= 333MHz)?"
 401         depends on ALPHA_NORITAKE || ALPHA_PRIMO
 402
 403 config ALPHA_EV56
 404         prompt "EV56 CPU (speed >= 400MHz)?"
 405         depends on ALPHA_RAWHIDE
 406
 407 config ALPHA_PRIMO
 408         bool "EV5 CPU daughtercard (model 5/xxx)?"
 409         depends on ALPHA_NORITAKE || ALPHA_MIKASA
 410         help
 411           Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
 412
 413 config ALPHA_GAMMA
 414         bool "EV5 CPU(s) (model 5/xxx)?"
 415         depends on ALPHA_SABLE
 416         help
 417           Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
 418
 419 config ALPHA_GAMMA
 420         bool
 421         depends on ALPHA_LYNX
 422         default y
 423
 424 config ALPHA_T2
 425         bool
 426         depends on ALPHA_SABLE || ALPHA_LYNX
 427         default y
 428
 429 config ALPHA_PYXIS
 430         bool
 431         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
 432         default y
 433
 434 config ALPHA_EV6
 435         bool
 436         depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
 437         default y
 438
 439 config ALPHA_TSUNAMI
 440         bool
 441         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
 442         default y
 443
 444 config ALPHA_EV67
 445         bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
 446         default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
 447         help
 448           Is this a machine based on the EV67 core?  If in doubt, select N here
 449           and the machine will be treated as an EV6.
 450
 451 config ALPHA_EV7
 452         bool
 453         depends on ALPHA_MARVEL
 454         default y
 455
 456 config ALPHA_MCPCIA
 457         bool
 458         depends on ALPHA_RAWHIDE
 459         default y
 460
 461 config ALPHA_POLARIS
 462         bool
 463         depends on ALPHA_RX164
 464         default y
 465
 466 config ALPHA_IRONGATE
 467         bool
 468         depends on ALPHA_NAUTILUS
 469         default y
 470
 471 config GENERIC_HWEIGHT
 472         bool
 473         default y if !ALPHA_EV67
 474
 475 config ALPHA_AVANTI
 476         bool
 477         depends on ALPHA_XL || ALPHA_AVANTI_CH
 478         default y
 479         help
 480           Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
 481           Alphas. Info at
 482           <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
 483
 484 config ALPHA_BROKEN_IRQ_MASK
 485         bool
 486         depends on ALPHA_GENERIC || ALPHA_PC164
 487         default y
 488
 489 config VGA_HOSE
 490         bool
 491         depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
 492         default y
 493         help
 494           Support VGA on an arbitrary hose; needed for several platforms
 495           which always have multiple hoses, and whose consoles support it.
 496
 497
 498 config ALPHA_SRM
 499         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
 500         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
 501         ---help---
 502           There are two different types of booting firmware on Alphas: SRM,
 503           which is command line driven, and ARC, which uses menus and arrow
 504           keys. Details about the Linux/Alpha booting process are contained in
 505           the Linux/Alpha FAQ, accessible on the WWW from
 506           <http://www.alphalinux.org/>.
 507
 508           The usual way to load Linux on an Alpha machine is to use MILO
 509           (a bootloader that lets you pass command line parameters to the
 510           kernel just like lilo does for the x86 architecture) which can be
 511           loaded either from ARC or can be installed directly as a permanent
 512           firmware replacement from floppy (which requires changing a certain
 513           jumper on the motherboard). If you want to do either of these, say N
 514           here. If MILO doesn't work on your system (true for Jensen
 515           motherboards), you can bypass it altogether and boot Linux directly
 516           from an SRM console; say Y here in order to do that. Note that you
 517           won't be able to boot from an IDE disk using SRM.
 518
 519           If unsure, say N.
 520
 521 config EISA
 522         bool
 523         depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
 524         default y
 525
 526 config ARCH_MAY_HAVE_PC_FDC
 527         def_bool y
 528
 529 config SMP
 530         bool "Symmetric multi-processing support"
 531         depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
 532         select USE_GENERIC_SMP_HELPERS
 533         ---help---
 534           This enables support for systems with more than one CPU. If you have
 535           a system with only one CPU, like most personal computers, say N. If
 536           you have a system with more than one CPU, say Y.
 537
 538           If you say N here, the kernel will run on single and multiprocessor
 539           machines, but will use only one CPU of a multiprocessor machine. If
 540           you say Y here, the kernel will run on many, but not all,
 541           singleprocessor machines. On a singleprocessor machine, the kernel
 542           will run faster if you say N here.
 543
 544           See also the SMP-HOWTO available at
 545           <http://www.tldp.org/docs.html#howto>.
 546
 547           If you don't know what to do here, say N.
 548
 549 config HAVE_DEC_LOCK
 550         bool
 551         depends on SMP
 552         default y
 553
 554 config NR_CPUS
 555         int "Maximum number of CPUs (2-32)"
 556         range 2 32
 557         depends on SMP
 558         default "32" if ALPHA_GENERIC || ALPHA_MARVEL
 559         default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
 560         help
 561           MARVEL support can handle a maximum of 32 CPUs, all the others
 562           with working support have a maximum of 4 CPUs.
 563
 564 config ARCH_DISCONTIGMEM_ENABLE
 565         bool "Discontiguous Memory Support (EXPERIMENTAL)"
 566         depends on EXPERIMENTAL
 567         help
 568           Say Y to support efficient handling of discontiguous physical memory,
 569           for architectures which are either NUMA (Non-Uniform Memory Access)
 570           or have huge holes in the physical address space for other reasons.
 571           See <file:Documentation/vm/numa> for more.
 572
 573 source "mm/Kconfig"
 574
 575 config NUMA
 576         bool "NUMA Support (EXPERIMENTAL)"
 577         depends on DISCONTIGMEM && BROKEN
 578         help
 579           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 580           Access).  This option is for configuring high-end multiprocessor
 581           server machines.  If in doubt, say N.
 582
 583 config NODES_SHIFT
 584         int
 585         default "7"
 586         depends on NEED_MULTIPLE_NODES
 587
 588 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
 589 config ALPHA_LARGE_VMALLOC
 590         bool
 591         ---help---
 592           Process creation and other aspects of virtual memory management can
 593           be streamlined if we restrict the kernel to one PGD for all vmalloc
 594           allocations.  This equates to about 8GB.
 595
 596           Under normal circumstances, this is so far and above what is needed
 597           as to be laughable.  However, there are certain applications (such
 598           as benchmark-grade in-kernel web serving) that can make use of as
 599           much vmalloc space as is available.
 600
 601           Say N unless you know you need gobs and gobs of vmalloc space.
 602
 603 config VERBOSE_MCHECK
 604         bool "Verbose Machine Checks"
 605
 606 config VERBOSE_MCHECK_ON
 607         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 608         depends on VERBOSE_MCHECK
 609         default 1
 610         ---help---
 611           This option allows the default printing mode to be set, and then
 612           possibly overridden by a boot command argument.
 613
 614           For example, if one wanted the option of printing verbose
 615           machine checks, but wanted the default to be as if verbose
 616           machine check printing was turned off, then one would choose
 617           the printing mode to be 0. Then, upon reboot, one could add
 618           the boot command line "verbose_mcheck=1" to get the normal
 619           verbose machine check printing, or "verbose_mcheck=2" to get
 620           the maximum information available.
 621
 622           Take the default (1) unless you want more control or more info.
 623
 624 config HZ
 625         int
 626         default 1200 if ALPHA_RAWHIDE
 627         default 1024
 628
 629 source "drivers/pci/Kconfig"
 630 source "drivers/eisa/Kconfig"
 631
 632 source "drivers/pcmcia/Kconfig"
 633
 634 config SRM_ENV
 635         tristate "SRM environment through procfs"
 636         depends on PROC_FS
 637         ---help---
 638           If you enable this option, a subdirectory inside /proc called
 639           /proc/srm_environment will give you access to the all important
 640           SRM environment variables (those which have a name) and also
 641           to all others (by their internal number).
 642
 643           SRM is something like a BIOS for Alpha machines. There are some
 644           other such BIOSes, like AlphaBIOS, which this driver cannot
 645           support (hey, that's not SRM!).
 646
 647           Despite the fact that this driver doesn't work on all Alphas (but
 648           only on those which have SRM as their firmware), it's save to
 649           build it even if your particular machine doesn't know about SRM
 650           (or if you intend to compile a generic kernel). It will simply
 651           not create those subdirectory in /proc (and give you some warning,
 652           of course).
 653
 654           This driver is also available as a module and will be called
 655           srm_env then.
 656
 657 source "fs/Kconfig.binfmt"
 658
 659 endmenu
 660
 661 source "net/Kconfig"
 662
 663 source "drivers/Kconfig"
 664
 665 source "fs/Kconfig"
 666
 667 source "arch/alpha/Kconfig.debug"
 668
 669 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
 670 # but we also need it if VGA_HOSE is set
 671 config DUMMY_CONSOLE
 672         bool
 673         depends on VGA_HOSE
 674         default y
 675
 676 source "security/Kconfig"
 677
 678 source "crypto/Kconfig"
 679
 680 source "lib/Kconfig"
 681