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         help
   9           The Alpha is a 64-bit general-purpose processor designed and
  10           marketed by the Digital Equipment Corporation of blessed memory,
  11           now Hewlett-Packard.  The Alpha Linux project has a home page at
  12           <http://www.alphalinux.org/>.
  13
  14 config 64BIT
  15         def_bool y
  16
  17 config MMU
  18         bool
  19         default y
  20
  21 config RWSEM_GENERIC_SPINLOCK
  22         bool
  23
  24 config RWSEM_XCHGADD_ALGORITHM
  25         bool
  26         default y
  27
  28 config ARCH_HAS_ILOG2_U32
  29         bool
  30         default n
  31
  32 config ARCH_HAS_ILOG2_U64
  33         bool
  34         default n
  35
  36 config GENERIC_FIND_NEXT_BIT
  37         bool
  38         default y
  39
  40 config GENERIC_CALIBRATE_DELAY
  41         bool
  42         default y
  43
  44 config ZONE_DMA
  45         bool
  46         default y
  47
  48 config GENERIC_ISA_DMA
  49         bool
  50         default y
  51
  52 config GENERIC_IOMAP
  53         bool
  54         default n
  55
  56 config GENERIC_HARDIRQS
  57         bool
  58         default y
  59
  60 config GENERIC_IRQ_PROBE
  61         bool
  62         default y
  63
  64 config AUTO_IRQ_AFFINITY
  65         bool
  66         depends on SMP
  67         default y
  68
  69 source "init/Kconfig"
  70
  71
  72 menu "System setup"
  73
  74 choice
  75         prompt "Alpha system type"
  76         default ALPHA_GENERIC
  77         ---help---
  78           This is the system type of your hardware.  A "generic" kernel will
  79           run on any supported Alpha system. However, if you configure a
  80           kernel for your specific system, it will be faster and smaller.
  81
  82           To find out what type of Alpha system you have, you may want to
  83           check out the Linux/Alpha FAQ, accessible on the WWW from
  84           <http://www.alphalinux.org/>. In summary:
  85
  86           Alcor/Alpha-XLT     AS 600
  87           Alpha-XL            XL-233, XL-266
  88           AlphaBook1          Alpha laptop
  89           Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
  90           Cabriolet           AlphaPC64, AlphaPCI64
  91           DP264               DP264
  92           EB164               EB164 21164 evaluation board
  93           EB64+               EB64+ 21064 evaluation board
  94           EB66                EB66 21066 evaluation board
  95           EB66+               EB66+ 21066 evaluation board
  96           Jensen              DECpc 150, DEC 2000 model 300,
  97           DEC 2000 model 500
  98           LX164               AlphaPC164-LX
  99           Lynx                AS 2100A
 100           Miata               Personal Workstation 433a, 433au, 500a,
 101           500au, 600a, or 600au
 102           Marvel              AlphaServer ES47 / ES80 / GS1280
 103           Mikasa              AS 1000
 104           Noname              AXPpci33, UDB (Multia)
 105           Noritake            AS 1000A, AS 600A, AS 800
 106           PC164               AlphaPC164
 107           Rawhide             AS 1200, AS 4000, AS 4100
 108           Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
 109           SX164               AlphaPC164-SX
 110           Sable               AS 2000, AS 2100
 111           Shark               DS 20L
 112           Takara              Takara
 113           Titan               AlphaServer ES45 / DS25
 114           Wildfire            AlphaServer GS 40/80/160/320
 115
 116           If you don't know what to do, choose "generic".
 117
 118 config ALPHA_GENERIC
 119         bool "Generic"
 120         help
 121           A generic kernel will run on all supported Alpha hardware.
 122
 123 config ALPHA_ALCOR
 124         bool "Alcor/Alpha-XLT"
 125         help
 126           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
 127           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
 128           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
 129           controller (256-bit memory bus) and a PCI interface.  It also does
 130           all the work required to support an external Bcache and to maintain
 131           memory coherence when a PCI device DMAs into (or out of) memory.
 132
 133 config ALPHA_XL
 134         bool "Alpha-XL"
 135         help
 136           XL-233 and XL-266-based Alpha systems.
 137
 138 config ALPHA_BOOK1
 139         bool "AlphaBook1"
 140         help
 141           Dec AlphaBook1/Burns Alpha-based laptops.
 142
 143 config ALPHA_AVANTI_CH
 144         bool "Avanti"
 145
 146 config ALPHA_CABRIOLET
 147         bool "Cabriolet"
 148         help
 149           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
 150           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
 151           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
 152           Bcache SIMMs.  Requires power supply with 3.3V output.
 153
 154 config ALPHA_DP264
 155         bool "DP264"
 156         help
 157           Various 21264 systems with the tsunami core logic chipset.
 158           API Networks: 264DP, UP2000(+), CS20;
 159           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 160
 161 config ALPHA_EB164
 162         bool "EB164"
 163         help
 164           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
 165           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
 166           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
 167           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
 168           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
 169           motherboard.  Requires power supply with 3.3V output.
 170
 171 config ALPHA_EB64P_CH
 172         bool "EB64+"
 173
 174 config ALPHA_EB66
 175         bool "EB66"
 176         help
 177           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
 178           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
 179           supply.  The EB66 schematic was published as a marketing poster
 180           advertising the 21066 as "the first microprocessor in the world with
 181           embedded PCI".
 182
 183 config ALPHA_EB66P
 184         bool "EB66+"
 185         help
 186           Later variant of the EB66 board.
 187
 188 config ALPHA_EIGER
 189         bool "Eiger"
 190         help
 191           Apparently an obscure OEM single-board computer based on the
 192           Typhoon/Tsunami chipset family. Information on it is scanty.
 193
 194 config ALPHA_JENSEN
 195         bool "Jensen"
 196         help
 197           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 198           of the first-generation Alpha systems. A number of these systems
 199           seem to be available on the second- hand market. The Jensen is a
 200           floor-standing tower system which originally used a 150MHz 21064 It
 201           used programmable logic to interface a 486 EISA I/O bridge to the
 202           CPU.
 203
 204 config ALPHA_LX164
 205         bool "LX164"
 206         help
 207           A technical overview of this board is available at
 208           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 209
 210 config ALPHA_LYNX
 211         bool "Lynx"
 212         help
 213           AlphaServer 2100A-based systems.
 214
 215 config ALPHA_MARVEL
 216         bool "Marvel"
 217         help
 218           AlphaServer ES47 / ES80 / GS1280 based on EV7.
 219
 220 config ALPHA_MIATA
 221         bool "Miata"
 222         help
 223           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
 224           or 600au).  There is an Installation HOWTO for this hardware at
 225           <http://eijk.homelinux.org/~stefan/miata.html>.
 226
 227 config ALPHA_MIKASA
 228         bool "Mikasa"
 229         help
 230           AlphaServer 1000-based Alpha systems.
 231
 232 config ALPHA_NAUTILUS
 233         bool "Nautilus"
 234         help
 235           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
 236
 237 config ALPHA_NONAME_CH
 238         bool "Noname"
 239
 240 config ALPHA_NORITAKE
 241         bool "Noritake"
 242         help
 243           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
 244           systems.
 245
 246 config ALPHA_PC164
 247         bool "PC164"
 248
 249 config ALPHA_P2K
 250         bool "Platform2000"
 251
 252 config ALPHA_RAWHIDE
 253         bool "Rawhide"
 254         help
 255           AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
 256           See HOWTO at
 257           <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
 258
 259 config ALPHA_RUFFIAN
 260         bool "Ruffian"
 261         help
 262           Samsung APC164UX.  There is a page on known problems and workarounds
 263           at <http://www.alphalinux.org/faq/FAQ-11.html>.
 264
 265 config ALPHA_RX164
 266         bool "RX164"
 267
 268 config ALPHA_SX164
 269         bool "SX164"
 270
 271 config ALPHA_SABLE
 272         bool "Sable"
 273         help
 274           Digital AlphaServer 2000 and 2100-based systems.
 275
 276 config ALPHA_SHARK
 277         bool "Shark"
 278
 279 config ALPHA_TAKARA
 280         bool "Takara"
 281         help
 282           Alpha 11164-based OEM single-board computer.
 283
 284 config ALPHA_TITAN
 285         bool "Titan"
 286         help
 287           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
 288
 289 config ALPHA_WILDFIRE
 290         bool "Wildfire"
 291         help
 292           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
 293
 294 endchoice
 295
 296 # clear all implied options (don't want default values for those):
 297 # Most of these machines have ISA slots; not exactly sure which don't,
 298 # and this doesn't activate hordes of code, so do it always.
 299 config ISA
 300         bool
 301         default y
 302         help
 303           Find out whether you have ISA slots on your motherboard.  ISA is the
 304           name of a bus system, i.e. the way the CPU talks to the other stuff
 305           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 306           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 307           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 308
 309 config ISA_DMA_API
 310         bool
 311         default y
 312
 313 config PCI
 314         bool
 315         depends on !ALPHA_JENSEN
 316         default y
 317         help
 318           Find out whether you have a PCI motherboard. PCI is the name of a
 319           bus system, i.e. the way the CPU talks to the other stuff inside
 320           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 321           VESA. If you have PCI, say Y, otherwise N.
 322
 323           The PCI-HOWTO, available from
 324           <http://www.tldp.org/docs.html#howto>, contains valuable
 325           information about which PCI hardware does work under Linux and which
 326           doesn't.
 327
 328 config PCI_DOMAINS
 329         bool
 330         default y
 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 ALPHA_SRM
 485         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
 486         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
 487         ---help---
 488           There are two different types of booting firmware on Alphas: SRM,
 489           which is command line driven, and ARC, which uses menus and arrow
 490           keys. Details about the Linux/Alpha booting process are contained in
 491           the Linux/Alpha FAQ, accessible on the WWW from
 492           <http://www.alphalinux.org/>.
 493
 494           The usual way to load Linux on an Alpha machine is to use MILO
 495           (a bootloader that lets you pass command line parameters to the
 496           kernel just like lilo does for the x86 architecture) which can be
 497           loaded either from ARC or can be installed directly as a permanent
 498           firmware replacement from floppy (which requires changing a certain
 499           jumper on the motherboard). If you want to do either of these, say N
 500           here. If MILO doesn't work on your system (true for Jensen
 501           motherboards), you can bypass it altogether and boot Linux directly
 502           from an SRM console; say Y here in order to do that. Note that you
 503           won't be able to boot from an IDE disk using SRM.
 504
 505           If unsure, say N.
 506
 507 config EISA
 508         bool
 509         depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
 510         default y
 511
 512 config ARCH_MAY_HAVE_PC_FDC
 513         def_bool y
 514
 515 config SMP
 516         bool "Symmetric multi-processing support"
 517         depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
 518         ---help---
 519           This enables support for systems with more than one CPU. If you have
 520           a system with only one CPU, like most personal computers, say N. If
 521           you have a system with more than one CPU, say Y.
 522
 523           If you say N here, the kernel will run on single and multiprocessor
 524           machines, but will use only one CPU of a multiprocessor machine. If
 525           you say Y here, the kernel will run on many, but not all,
 526           singleprocessor machines. On a singleprocessor machine, the kernel
 527           will run faster if you say N here.
 528
 529           See also the <file:Documentation/smp.txt>, and the SMP-HOWTO
 530           available at <http://www.tldp.org/docs.html#howto>.
 531
 532           If you don't know what to do here, say N.
 533
 534 config HAVE_DEC_LOCK
 535         bool
 536         depends on SMP
 537         default y
 538
 539 config NR_CPUS
 540         int "Maximum number of CPUs (2-64)"
 541         range 2 64
 542         depends on SMP
 543         default "64"
 544
 545 config ARCH_DISCONTIGMEM_ENABLE
 546         bool "Discontiguous Memory Support (EXPERIMENTAL)"
 547         depends on EXPERIMENTAL
 548         help
 549           Say Y to support efficient handling of discontiguous physical memory,
 550           for architectures which are either NUMA (Non-Uniform Memory Access)
 551           or have huge holes in the physical address space for other reasons.
 552           See <file:Documentation/vm/numa> for more.
 553
 554 source "mm/Kconfig"
 555
 556 config NUMA
 557         bool "NUMA Support (EXPERIMENTAL)"
 558         depends on DISCONTIGMEM && BROKEN
 559         help
 560           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 561           Access).  This option is for configuring high-end multiprocessor
 562           server machines.  If in doubt, say N.
 563
 564 config NODES_SHIFT
 565         int
 566         default "7"
 567         depends on NEED_MULTIPLE_NODES
 568
 569 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
 570 config ALPHA_LARGE_VMALLOC
 571         bool
 572         ---help---
 573           Process creation and other aspects of virtual memory management can
 574           be streamlined if we restrict the kernel to one PGD for all vmalloc
 575           allocations.  This equates to about 8GB.
 576
 577           Under normal circumstances, this is so far and above what is needed
 578           as to be laughable.  However, there are certain applications (such
 579           as benchmark-grade in-kernel web serving) that can make use of as
 580           much vmalloc space as is available.
 581
 582           Say N unless you know you need gobs and gobs of vmalloc space.
 583
 584 config VERBOSE_MCHECK
 585         bool "Verbose Machine Checks"
 586
 587 config VERBOSE_MCHECK_ON
 588         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 589         depends on VERBOSE_MCHECK
 590         default 1
 591         ---help---
 592           This option allows the default printing mode to be set, and then
 593           possibly overridden by a boot command argument.
 594
 595           For example, if one wanted the option of printing verbose
 596           machine checks, but wanted the default to be as if verbose
 597           machine check printing was turned off, then one would choose
 598           the printing mode to be 0. Then, upon reboot, one could add
 599           the boot command line "verbose_mcheck=1" to get the normal
 600           verbose machine check printing, or "verbose_mcheck=2" to get
 601           the maximum information available.
 602
 603           Take the default (1) unless you want more control or more info.
 604
 605 source "drivers/pci/Kconfig"
 606 source "drivers/eisa/Kconfig"
 607
 608 source "drivers/pcmcia/Kconfig"
 609
 610 config SRM_ENV
 611         tristate "SRM environment through procfs"
 612         depends on PROC_FS
 613         ---help---
 614           If you enable this option, a subdirectory inside /proc called
 615           /proc/srm_environment will give you access to the all important
 616           SRM environment variables (those which have a name) and also
 617           to all others (by their internal number).
 618
 619           SRM is something like a BIOS for Alpha machines. There are some
 620           other such BIOSes, like AlphaBIOS, which this driver cannot
 621           support (hey, that's not SRM!).
 622
 623           Despite the fact that this driver doesn't work on all Alphas (but
 624           only on those which have SRM as their firmware), it's save to
 625           build it even if your particular machine doesn't know about SRM
 626           (or if you intend to compile a generic kernel). It will simply
 627           not create those subdirectory in /proc (and give you some warning,
 628           of course).
 629
 630           This driver is also available as a module and will be called
 631           srm_env then.
 632
 633 source "fs/Kconfig.binfmt"
 634
 635 endmenu
 636
 637 source "net/Kconfig"
 638
 639 source "drivers/Kconfig"
 640
 641 source "fs/Kconfig"
 642
 643 source "arch/alpha/oprofile/Kconfig"
 644
 645 source "arch/alpha/Kconfig.debug"
 646
 647 source "security/Kconfig"
 648
 649 source "crypto/Kconfig"
 650
 651 source "lib/Kconfig"
 652