arch/alpha/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5 config ALPHA
   6         bool
   7         default y
   8         select HAVE_OPROFILE
   9         help
  10           The Alpha is a 64-bit general-purpose processor designed and
  11           marketed by the Digital Equipment Corporation of blessed memory,
  12           now Hewlett-Packard.  The Alpha Linux project has a home page at
  13           <http://www.alphalinux.org/>.
  14
  15 config 64BIT
  16         def_bool y
  17
  18 config MMU
  19         bool
  20         default y
  21
  22 config RWSEM_GENERIC_SPINLOCK
  23         bool
  24
  25 config RWSEM_XCHGADD_ALGORITHM
  26         bool
  27         default y
  28
  29 config ARCH_HAS_ILOG2_U32
  30         bool
  31         default n
  32
  33 config ARCH_HAS_ILOG2_U64
  34         bool
  35         default n
  36
  37 config GENERIC_FIND_NEXT_BIT
  38         bool
  39         default y
  40
  41 config GENERIC_CALIBRATE_DELAY
  42         bool
  43         default y
  44
  45 config ZONE_DMA
  46         bool
  47         default y
  48
  49 config GENERIC_ISA_DMA
  50         bool
  51         default y
  52
  53 config GENERIC_IOMAP
  54         bool
  55         default n
  56
  57 config GENERIC_HARDIRQS
  58         bool
  59         default y
  60
  61 config GENERIC_IRQ_PROBE
  62         bool
  63         default y
  64
  65 config AUTO_IRQ_AFFINITY
  66         bool
  67         depends on SMP
  68         default y
  69
  70 config ARCH_SUPPORTS_AOUT
  71         def_bool y
  72
  73 source "init/Kconfig"
  74
  75
  76 menu "System setup"
  77
  78 choice
  79         prompt "Alpha system type"
  80         default ALPHA_GENERIC
  81         ---help---
  82           This is the system type of your hardware.  A "generic" kernel will
  83           run on any supported Alpha system. However, if you configure a
  84           kernel for your specific system, it will be faster and smaller.
  85
  86           To find out what type of Alpha system you have, you may want to
  87           check out the Linux/Alpha FAQ, accessible on the WWW from
  88           <http://www.alphalinux.org/>. In summary:
  89
  90           Alcor/Alpha-XLT     AS 600, AS 500, XL-300, XL-366
  91           Alpha-XL            XL-233, XL-266
  92           AlphaBook1          Alpha laptop
  93           Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
  94           Cabriolet           AlphaPC64, AlphaPCI64
  95           DP264               DP264 / DS20 / ES40 / DS10 / DS10L
  96           EB164               EB164 21164 evaluation board
  97           EB64+               EB64+ 21064 evaluation board
  98           EB66                EB66 21066 evaluation board
  99           EB66+               EB66+ 21066 evaluation board
 100           Jensen              DECpc 150, DEC 2000 models 300, 500
 101           LX164               AlphaPC164-LX
 102           Lynx                AS 2100A
 103           Miata               Personal Workstation 433/500/600 a/au
 104           Marvel              AlphaServer ES47 / ES80 / GS1280
 105           Mikasa              AS 1000
 106           Noname              AXPpci33, UDB (Multia)
 107           Noritake            AS 1000A, AS 600A, AS 800
 108           PC164               AlphaPC164
 109           Rawhide             AS 1200, AS 4000, AS 4100
 110           Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
 111           SX164               AlphaPC164-SX
 112           Sable               AS 2000, AS 2100
 113           Shark               DS 20L
 114           Takara              Takara (OEM)
 115           Titan               AlphaServer ES45 / DS25 / DS15
 116           Wildfire            AlphaServer GS 40/80/160/320
 117
 118           If you don't know what to do, choose "generic".
 119
 120 config ALPHA_GENERIC
 121         bool "Generic"
 122         help
 123           A generic kernel will run on all supported Alpha hardware.
 124
 125 config ALPHA_ALCOR
 126         bool "Alcor/Alpha-XLT"
 127         help
 128           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
 129           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
 130           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
 131           controller (256-bit memory bus) and a PCI interface.  It also does
 132           all the work required to support an external Bcache and to maintain
 133           memory coherence when a PCI device DMAs into (or out of) memory.
 134
 135 config ALPHA_XL
 136         bool "Alpha-XL"
 137         help
 138           XL-233 and XL-266-based Alpha systems.
 139
 140 config ALPHA_BOOK1
 141         bool "AlphaBook1"
 142         help
 143           Dec AlphaBook1/Burns Alpha-based laptops.
 144
 145 config ALPHA_AVANTI_CH
 146         bool "Avanti"
 147
 148 config ALPHA_CABRIOLET
 149         bool "Cabriolet"
 150         help
 151           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
 152           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
 153           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
 154           Bcache SIMMs.  Requires power supply with 3.3V output.
 155
 156 config ALPHA_DP264
 157         bool "DP264"
 158         help
 159           Various 21264 systems with the tsunami core logic chipset.
 160           API Networks: 264DP, UP2000(+), CS20;
 161           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 162
 163 config ALPHA_EB164
 164         bool "EB164"
 165         help
 166           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
 167           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
 168           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
 169           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
 170           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
 171           motherboard.  Requires power supply with 3.3V output.
 172
 173 config ALPHA_EB64P_CH
 174         bool "EB64+"
 175
 176 config ALPHA_EB66
 177         bool "EB66"
 178         help
 179           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
 180           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
 181           supply.  The EB66 schematic was published as a marketing poster
 182           advertising the 21066 as "the first microprocessor in the world with
 183           embedded PCI".
 184
 185 config ALPHA_EB66P
 186         bool "EB66+"
 187         help
 188           Later variant of the EB66 board.
 189
 190 config ALPHA_EIGER
 191         bool "Eiger"
 192         help
 193           Apparently an obscure OEM single-board computer based on the
 194           Typhoon/Tsunami chipset family. Information on it is scanty.
 195
 196 config ALPHA_JENSEN
 197         bool "Jensen"
 198         help
 199           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 200           of the first-generation Alpha systems. A number of these systems
 201           seem to be available on the second- hand market. The Jensen is a
 202           floor-standing tower system which originally used a 150MHz 21064 It
 203           used programmable logic to interface a 486 EISA I/O bridge to the
 204           CPU.
 205
 206 config ALPHA_LX164
 207         bool "LX164"
 208         help
 209           A technical overview of this board is available at
 210           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 211
 212 config ALPHA_LYNX
 213         bool "Lynx"
 214         help
 215           AlphaServer 2100A-based systems.
 216
 217 config ALPHA_MARVEL
 218         bool "Marvel"
 219         help
 220           AlphaServer ES47 / ES80 / GS1280 based on EV7.
 221
 222 config ALPHA_MIATA
 223         bool "Miata"
 224         help
 225           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
 226           or 600au).  There is an Installation HOWTO for this hardware at
 227           <http://eijk.homelinux.org/~stefan/miata.html>.
 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         default y
 319         help
 320           Find out whether you have a PCI motherboard. PCI is the name of a
 321           bus system, i.e. the way the CPU talks to the other stuff inside
 322           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 323           VESA. If you have PCI, say Y, otherwise N.
 324
 325 config PCI_DOMAINS
 326         bool
 327         default y
 328
 329 config PCI_SYSCALL
 330         def_bool PCI
 331
 332 config ALPHA_CORE_AGP
 333         bool
 334         depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
 335         default y
 336
 337 config ALPHA_NONAME
 338         bool
 339         depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
 340         default y
 341         help
 342           The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
 343           UDB).  This design was produced by Digital's Technical OEM (TOEM)
 344           group. It uses the 21066 processor running at 166MHz or 233MHz. It
 345           is a baby-AT size, and runs from a standard PC power supply. It has
 346           5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
 347           2 versions, with either PS/2 or large DIN connectors for the
 348           keyboard.
 349
 350 config ALPHA_EV4
 351         bool
 352         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
 353         default y if !ALPHA_LYNX
 354
 355 config ALPHA_LCA
 356         bool
 357         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
 358         default y
 359
 360 config ALPHA_APECS
 361         bool
 362         depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
 363         default y
 364
 365 config ALPHA_EB64P
 366         bool
 367         depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
 368         default y
 369         help
 370           Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
 371           2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
 372           ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
 373           (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
 374           SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
 375           Runs from standard PC power supply.
 376
 377 config ALPHA_EV5
 378         bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
 379         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
 380
 381 config ALPHA_EV4
 382         bool
 383         default y if ALPHA_LYNX && !ALPHA_EV5
 384
 385 config ALPHA_CIA
 386         bool
 387         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
 388         default y
 389
 390 config ALPHA_EV56
 391         bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
 392         default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
 393
 394 config ALPHA_EV56
 395         prompt "EV56 CPU (speed >= 333MHz)?"
 396         depends on ALPHA_NORITAKE || ALPHA_PRIMO
 397
 398 config ALPHA_EV56
 399         prompt "EV56 CPU (speed >= 400MHz)?"
 400         depends on ALPHA_RAWHIDE
 401
 402 config ALPHA_PRIMO
 403         bool "EV5 CPU daughtercard (model 5/xxx)?"
 404         depends on ALPHA_NORITAKE || ALPHA_MIKASA
 405         help
 406           Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
 407
 408 config ALPHA_GAMMA
 409         bool "EV5 CPU(s) (model 5/xxx)?"
 410         depends on ALPHA_SABLE
 411         help
 412           Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
 413
 414 config ALPHA_GAMMA
 415         bool
 416         depends on ALPHA_LYNX
 417         default y
 418
 419 config ALPHA_T2
 420         bool
 421         depends on ALPHA_SABLE || ALPHA_LYNX
 422         default y
 423
 424 config ALPHA_PYXIS
 425         bool
 426         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
 427         default y
 428
 429 config ALPHA_EV6
 430         bool
 431         depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
 432         default y
 433
 434 config ALPHA_TSUNAMI
 435         bool
 436         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
 437         default y
 438
 439 config ALPHA_EV67
 440         bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
 441         default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
 442         help
 443           Is this a machine based on the EV67 core?  If in doubt, select N here
 444           and the machine will be treated as an EV6.
 445
 446 config ALPHA_EV7
 447         bool
 448         depends on ALPHA_MARVEL
 449         default y
 450
 451 config ALPHA_MCPCIA
 452         bool
 453         depends on ALPHA_RAWHIDE
 454         default y
 455
 456 config ALPHA_POLARIS
 457         bool
 458         depends on ALPHA_RX164
 459         default y
 460
 461 config ALPHA_IRONGATE
 462         bool
 463         depends on ALPHA_NAUTILUS
 464         default y
 465
 466 config GENERIC_HWEIGHT
 467         bool
 468         default y if !ALPHA_EV67
 469
 470 config ALPHA_AVANTI
 471         bool
 472         depends on ALPHA_XL || ALPHA_AVANTI_CH
 473         default y
 474         help
 475           Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
 476           Alphas. Info at
 477           <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
 478
 479 config ALPHA_BROKEN_IRQ_MASK
 480         bool
 481         depends on ALPHA_GENERIC || ALPHA_PC164
 482         default y
 483
 484 config VGA_HOSE
 485         bool
 486         depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
 487         default y
 488         help
 489           Support VGA on an arbitrary hose; needed for several platforms
 490           which always have multiple hoses, and whose consoles support it.
 491
 492
 493 config ALPHA_SRM
 494         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
 495         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
 496         ---help---
 497           There are two different types of booting firmware on Alphas: SRM,
 498           which is command line driven, and ARC, which uses menus and arrow
 499           keys. Details about the Linux/Alpha booting process are contained in
 500           the Linux/Alpha FAQ, accessible on the WWW from
 501           <http://www.alphalinux.org/>.
 502
 503           The usual way to load Linux on an Alpha machine is to use MILO
 504           (a bootloader that lets you pass command line parameters to the
 505           kernel just like lilo does for the x86 architecture) which can be
 506           loaded either from ARC or can be installed directly as a permanent
 507           firmware replacement from floppy (which requires changing a certain
 508           jumper on the motherboard). If you want to do either of these, say N
 509           here. If MILO doesn't work on your system (true for Jensen
 510           motherboards), you can bypass it altogether and boot Linux directly
 511           from an SRM console; say Y here in order to do that. Note that you
 512           won't be able to boot from an IDE disk using SRM.
 513
 514           If unsure, say N.
 515
 516 config EISA
 517         bool
 518         depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
 519         default y
 520
 521 config ARCH_MAY_HAVE_PC_FDC
 522         def_bool y
 523
 524 config SMP
 525         bool "Symmetric multi-processing support"
 526         depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
 527         ---help---
 528           This enables support for systems with more than one CPU. If you have
 529           a system with only one CPU, like most personal computers, say N. If
 530           you have a system with more than one CPU, say Y.
 531
 532           If you say N here, the kernel will run on single and multiprocessor
 533           machines, but will use only one CPU of a multiprocessor machine. If
 534           you say Y here, the kernel will run on many, but not all,
 535           singleprocessor machines. On a singleprocessor machine, the kernel
 536           will run faster if you say N here.
 537
 538           See also the SMP-HOWTO available at
 539           <http://www.tldp.org/docs.html#howto>.
 540
 541           If you don't know what to do here, say N.
 542
 543 config HAVE_DEC_LOCK
 544         bool
 545         depends on SMP
 546         default y
 547
 548 config NR_CPUS
 549         int "Maximum number of CPUs (2-32)"
 550         range 2 32
 551         depends on SMP
 552         default "32" if ALPHA_GENERIC || ALPHA_MARVEL
 553         default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
 554         help
 555           MARVEL support can handle a maximum of 32 CPUs, all the others
 556           with working support have a maximum of 4 CPUs.
 557
 558 config ARCH_DISCONTIGMEM_ENABLE
 559         bool "Discontiguous Memory Support (EXPERIMENTAL)"
 560         depends on EXPERIMENTAL
 561         help
 562           Say Y to support efficient handling of discontiguous physical memory,
 563           for architectures which are either NUMA (Non-Uniform Memory Access)
 564           or have huge holes in the physical address space for other reasons.
 565           See <file:Documentation/vm/numa> for more.
 566
 567 source "mm/Kconfig"
 568
 569 config NUMA
 570         bool "NUMA Support (EXPERIMENTAL)"
 571         depends on DISCONTIGMEM && BROKEN
 572         help
 573           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 574           Access).  This option is for configuring high-end multiprocessor
 575           server machines.  If in doubt, say N.
 576
 577 config NODES_SHIFT
 578         int
 579         default "7"
 580         depends on NEED_MULTIPLE_NODES
 581
 582 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
 583 config ALPHA_LARGE_VMALLOC
 584         bool
 585         ---help---
 586           Process creation and other aspects of virtual memory management can
 587           be streamlined if we restrict the kernel to one PGD for all vmalloc
 588           allocations.  This equates to about 8GB.
 589
 590           Under normal circumstances, this is so far and above what is needed
 591           as to be laughable.  However, there are certain applications (such
 592           as benchmark-grade in-kernel web serving) that can make use of as
 593           much vmalloc space as is available.
 594
 595           Say N unless you know you need gobs and gobs of vmalloc space.
 596
 597 config VERBOSE_MCHECK
 598         bool "Verbose Machine Checks"
 599
 600 config VERBOSE_MCHECK_ON
 601         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 602         depends on VERBOSE_MCHECK
 603         default 1
 604         ---help---
 605           This option allows the default printing mode to be set, and then
 606           possibly overridden by a boot command argument.
 607
 608           For example, if one wanted the option of printing verbose
 609           machine checks, but wanted the default to be as if verbose
 610           machine check printing was turned off, then one would choose
 611           the printing mode to be 0. Then, upon reboot, one could add
 612           the boot command line "verbose_mcheck=1" to get the normal
 613           verbose machine check printing, or "verbose_mcheck=2" to get
 614           the maximum information available.
 615
 616           Take the default (1) unless you want more control or more info.
 617
 618 config HZ
 619         int
 620         default 1200 if ALPHA_RAWHIDE
 621         default 1024
 622
 623 source "drivers/pci/Kconfig"
 624 source "drivers/eisa/Kconfig"
 625
 626 source "drivers/pcmcia/Kconfig"
 627
 628 config SRM_ENV
 629         tristate "SRM environment through procfs"
 630         depends on PROC_FS
 631         ---help---
 632           If you enable this option, a subdirectory inside /proc called
 633           /proc/srm_environment will give you access to the all important
 634           SRM environment variables (those which have a name) and also
 635           to all others (by their internal number).
 636
 637           SRM is something like a BIOS for Alpha machines. There are some
 638           other such BIOSes, like AlphaBIOS, which this driver cannot
 639           support (hey, that's not SRM!).
 640
 641           Despite the fact that this driver doesn't work on all Alphas (but
 642           only on those which have SRM as their firmware), it's save to
 643           build it even if your particular machine doesn't know about SRM
 644           (or if you intend to compile a generic kernel). It will simply
 645           not create those subdirectory in /proc (and give you some warning,
 646           of course).
 647
 648           This driver is also available as a module and will be called
 649           srm_env then.
 650
 651 source "fs/Kconfig.binfmt"
 652
 653 endmenu
 654
 655 source "net/Kconfig"
 656
 657 source "drivers/Kconfig"
 658
 659 source "fs/Kconfig"
 660
 661 source "arch/alpha/Kconfig.debug"
 662
 663 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
 664 # but we also need it if VGA_HOSE is set
 665 config DUMMY_CONSOLE
 666         bool
 667         depends on VGA_HOSE
 668         default y
 669
 670 source "security/Kconfig"
 671
 672 source "crypto/Kconfig"
 673
 674 source "lib/Kconfig"
 675