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