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