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_PERF_EVENTS
  10         select HAVE_DMA_ATTRS
  11         help
  12           The Alpha is a 64-bit general-purpose processor designed and
  13           marketed by the Digital Equipment Corporation of blessed memory,
  14           now Hewlett-Packard.  The Alpha Linux project has a home page at
  15           <http://www.alphalinux.org/>.
  16
  17 config 64BIT
  18         def_bool y
  19
  20 config MMU
  21         bool
  22         default y
  23
  24 config RWSEM_GENERIC_SPINLOCK
  25         bool
  26
  27 config RWSEM_XCHGADD_ALGORITHM
  28         bool
  29         default y
  30
  31 config ARCH_HAS_ILOG2_U32
  32         bool
  33         default n
  34
  35 config ARCH_HAS_ILOG2_U64
  36         bool
  37         default n
  38
  39 config GENERIC_FIND_NEXT_BIT
  40         bool
  41         default y
  42
  43 config GENERIC_CALIBRATE_DELAY
  44         bool
  45         default y
  46
  47 config GENERIC_CMOS_UPDATE
  48         def_bool y
  49
  50 config ZONE_DMA
  51         bool
  52         default y
  53
  54 config ARCH_DMA_ADDR_T_64BIT
  55         def_bool y
  56
  57 config NEED_DMA_MAP_STATE
  58        def_bool y
  59
  60 config NEED_SG_DMA_LENGTH
  61         def_bool y
  62
  63 config GENERIC_ISA_DMA
  64         bool
  65         default y
  66
  67 config GENERIC_IOMAP
  68         bool
  69         default n
  70
  71 config GENERIC_HARDIRQS_NO__DO_IRQ
  72         def_bool y
  73
  74 config GENERIC_HARDIRQS
  75         bool
  76         default y
  77
  78 config GENERIC_IRQ_PROBE
  79         bool
  80         default y
  81
  82 config AUTO_IRQ_AFFINITY
  83         bool
  84         depends on SMP
  85         default y
  86
  87 source "init/Kconfig"
  88 source "kernel/Kconfig.freezer"
  89
  90
  91 menu "System setup"
  92
  93 choice
  94         prompt "Alpha system type"
  95         default ALPHA_GENERIC
  96         ---help---
  97           This is the system type of your hardware.  A "generic" kernel will
  98           run on any supported Alpha system. However, if you configure a
  99           kernel for your specific system, it will be faster and smaller.
 100
 101           To find out what type of Alpha system you have, you may want to
 102           check out the Linux/Alpha FAQ, accessible on the WWW from
 103           <http://www.alphalinux.org/>. In summary:
 104
 105           Alcor/Alpha-XLT     AS 600, AS 500, XL-300, XL-366
 106           Alpha-XL            XL-233, XL-266
 107           AlphaBook1          Alpha laptop
 108           Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
 109           Cabriolet           AlphaPC64, AlphaPCI64
 110           DP264               DP264 / DS20 / ES40 / DS10 / DS10L
 111           EB164               EB164 21164 evaluation board
 112           EB64+               EB64+ 21064 evaluation board
 113           EB66                EB66 21066 evaluation board
 114           EB66+               EB66+ 21066 evaluation board
 115           Jensen              DECpc 150, DEC 2000 models 300, 500
 116           LX164               AlphaPC164-LX
 117           Lynx                AS 2100A
 118           Miata               Personal Workstation 433/500/600 a/au
 119           Marvel              AlphaServer ES47 / ES80 / GS1280
 120           Mikasa              AS 1000
 121           Noname              AXPpci33, UDB (Multia)
 122           Noritake            AS 1000A, AS 600A, AS 800
 123           PC164               AlphaPC164
 124           Rawhide             AS 1200, AS 4000, AS 4100
 125           Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
 126           SX164               AlphaPC164-SX
 127           Sable               AS 2000, AS 2100
 128           Shark               DS 20L
 129           Takara              Takara (OEM)
 130           Titan               AlphaServer ES45 / DS25 / DS15
 131           Wildfire            AlphaServer GS 40/80/160/320
 132
 133           If you don't know what to do, choose "generic".
 134
 135 config ALPHA_GENERIC
 136         bool "Generic"
 137         help
 138           A generic kernel will run on all supported Alpha hardware.
 139
 140 config ALPHA_ALCOR
 141         bool "Alcor/Alpha-XLT"
 142         help
 143           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
 144           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
 145           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
 146           controller (256-bit memory bus) and a PCI interface.  It also does
 147           all the work required to support an external Bcache and to maintain
 148           memory coherence when a PCI device DMAs into (or out of) memory.
 149
 150 config ALPHA_XL
 151         bool "Alpha-XL"
 152         help
 153           XL-233 and XL-266-based Alpha systems.
 154
 155 config ALPHA_BOOK1
 156         bool "AlphaBook1"
 157         help
 158           Dec AlphaBook1/Burns Alpha-based laptops.
 159
 160 config ALPHA_AVANTI_CH
 161         bool "Avanti"
 162
 163 config ALPHA_CABRIOLET
 164         bool "Cabriolet"
 165         help
 166           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
 167           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
 168           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
 169           Bcache SIMMs.  Requires power supply with 3.3V output.
 170
 171 config ALPHA_DP264
 172         bool "DP264"
 173         help
 174           Various 21264 systems with the tsunami core logic chipset.
 175           API Networks: 264DP, UP2000(+), CS20;
 176           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 177
 178 config ALPHA_EB164
 179         bool "EB164"
 180         help
 181           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
 182           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
 183           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
 184           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
 185           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
 186           motherboard.  Requires power supply with 3.3V output.
 187
 188 config ALPHA_EB64P_CH
 189         bool "EB64+"
 190
 191 config ALPHA_EB66
 192         bool "EB66"
 193         help
 194           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
 195           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
 196           supply.  The EB66 schematic was published as a marketing poster
 197           advertising the 21066 as "the first microprocessor in the world with
 198           embedded PCI".
 199
 200 config ALPHA_EB66P
 201         bool "EB66+"
 202         help
 203           Later variant of the EB66 board.
 204
 205 config ALPHA_EIGER
 206         bool "Eiger"
 207         help
 208           Apparently an obscure OEM single-board computer based on the
 209           Typhoon/Tsunami chipset family. Information on it is scanty.
 210
 211 config ALPHA_JENSEN
 212         bool "Jensen"
 213         help
 214           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 215           of the first-generation Alpha systems. A number of these systems
 216           seem to be available on the second- hand market. The Jensen is a
 217           floor-standing tower system which originally used a 150MHz 21064 It
 218           used programmable logic to interface a 486 EISA I/O bridge to the
 219           CPU.
 220
 221 config ALPHA_LX164
 222         bool "LX164"
 223         help
 224           A technical overview of this board is available at
 225           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 226
 227 config ALPHA_LYNX
 228         bool "Lynx"
 229         help
 230           AlphaServer 2100A-based systems.
 231
 232 config ALPHA_MARVEL
 233         bool "Marvel"
 234         help
 235           AlphaServer ES47 / ES80 / GS1280 based on EV7.
 236
 237 config ALPHA_MIATA
 238         bool "Miata"
 239         help
 240           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
 241           or 600au).
 242
 243 config ALPHA_MIKASA
 244         bool "Mikasa"
 245         help
 246           AlphaServer 1000-based Alpha systems.
 247
 248 config ALPHA_NAUTILUS
 249         bool "Nautilus"
 250         help
 251           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
 252
 253 config ALPHA_NONAME_CH
 254         bool "Noname"
 255
 256 config ALPHA_NORITAKE
 257         bool "Noritake"
 258         help
 259           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
 260           systems.
 261
 262 config ALPHA_PC164
 263         bool "PC164"
 264
 265 config ALPHA_P2K
 266         bool "Platform2000"
 267
 268 config ALPHA_RAWHIDE
 269         bool "Rawhide"
 270         help
 271           AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
 272           See HOWTO at
 273           <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
 274
 275 config ALPHA_RUFFIAN
 276         bool "Ruffian"
 277         help
 278           Samsung APC164UX.  There is a page on known problems and workarounds
 279           at <http://www.alphalinux.org/faq/FAQ-11.html>.
 280
 281 config ALPHA_RX164
 282         bool "RX164"
 283
 284 config ALPHA_SX164
 285         bool "SX164"
 286
 287 config ALPHA_SABLE
 288         bool "Sable"
 289         help
 290           Digital AlphaServer 2000 and 2100-based systems.
 291
 292 config ALPHA_SHARK
 293         bool "Shark"
 294
 295 config ALPHA_TAKARA
 296         bool "Takara"
 297         help
 298           Alpha 11164-based OEM single-board computer.
 299
 300 config ALPHA_TITAN
 301         bool "Titan"
 302         help
 303           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
 304
 305 config ALPHA_WILDFIRE
 306         bool "Wildfire"
 307         help
 308           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
 309
 310 endchoice
 311
 312 # clear all implied options (don't want default values for those):
 313 # Most of these machines have ISA slots; not exactly sure which don't,
 314 # and this doesn't activate hordes of code, so do it always.
 315 config ISA
 316         bool
 317         default y
 318         help
 319           Find out whether you have ISA slots on your motherboard.  ISA is the
 320           name of a bus system, i.e. the way the CPU talks to the other stuff
 321           inside your box.  Other bus systems are PCI, EISA, MicroChannel
 322           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
 323           newer boards don't support it.  If you have ISA, say Y, otherwise N.
 324
 325 config ISA_DMA_API
 326         bool
 327         default y
 328
 329 config PCI
 330         bool
 331         depends on !ALPHA_JENSEN
 332         default y
 333         help
 334           Find out whether you have a PCI motherboard. PCI is the name of a
 335           bus system, i.e. the way the CPU talks to the other stuff inside
 336           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 337           VESA. If you have PCI, say Y, otherwise N.
 338
 339 config PCI_DOMAINS
 340         bool
 341         default y
 342
 343 config PCI_SYSCALL
 344         def_bool PCI
 345
 346 config IOMMU_HELPER
 347         def_bool PCI
 348
 349 config ALPHA_NONAME
 350         bool
 351         depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
 352         default y
 353         help
 354           The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
 355           UDB).  This design was produced by Digital's Technical OEM (TOEM)
 356           group. It uses the 21066 processor running at 166MHz or 233MHz. It
 357           is a baby-AT size, and runs from a standard PC power supply. It has
 358           5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
 359           2 versions, with either PS/2 or large DIN connectors for the
 360           keyboard.
 361
 362 config ALPHA_EV4
 363         bool
 364         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
 365         default y if !ALPHA_LYNX
 366
 367 config ALPHA_LCA
 368         bool
 369         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
 370         default y
 371
 372 config ALPHA_APECS
 373         bool
 374         depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
 375         default y
 376
 377 config ALPHA_EB64P
 378         bool
 379         depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
 380         default y
 381         help
 382           Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
 383           2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
 384           ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
 385           (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
 386           SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
 387           Runs from standard PC power supply.
 388
 389 config ALPHA_EV5
 390         bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
 391         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
 392
 393 config ALPHA_EV4
 394         bool
 395         default y if ALPHA_LYNX && !ALPHA_EV5
 396
 397 config ALPHA_CIA
 398         bool
 399         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
 400         default y
 401
 402 config ALPHA_EV56
 403         bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
 404         default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
 405
 406 config ALPHA_EV56
 407         prompt "EV56 CPU (speed >= 333MHz)?"
 408         depends on ALPHA_NORITAKE || ALPHA_PRIMO
 409
 410 config ALPHA_EV56
 411         prompt "EV56 CPU (speed >= 400MHz)?"
 412         depends on ALPHA_RAWHIDE
 413
 414 config ALPHA_PRIMO
 415         bool "EV5 CPU daughtercard (model 5/xxx)?"
 416         depends on ALPHA_NORITAKE || ALPHA_MIKASA
 417         help
 418           Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
 419
 420 config ALPHA_GAMMA
 421         bool "EV5 CPU(s) (model 5/xxx)?"
 422         depends on ALPHA_SABLE
 423         help
 424           Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
 425
 426 config ALPHA_GAMMA
 427         bool
 428         depends on ALPHA_LYNX
 429         default y
 430
 431 config ALPHA_T2
 432         bool
 433         depends on ALPHA_SABLE || ALPHA_LYNX
 434         default y
 435
 436 config ALPHA_PYXIS
 437         bool
 438         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
 439         default y
 440
 441 config ALPHA_EV6
 442         bool
 443         depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
 444         default y
 445
 446 config ALPHA_TSUNAMI
 447         bool
 448         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
 449         default y
 450
 451 config ALPHA_EV67
 452         bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
 453         default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
 454         help
 455           Is this a machine based on the EV67 core?  If in doubt, select N here
 456           and the machine will be treated as an EV6.
 457
 458 config ALPHA_EV7
 459         bool
 460         depends on ALPHA_MARVEL
 461         default y
 462
 463 config ALPHA_MCPCIA
 464         bool
 465         depends on ALPHA_RAWHIDE
 466         default y
 467
 468 config ALPHA_POLARIS
 469         bool
 470         depends on ALPHA_RX164
 471         default y
 472
 473 config ALPHA_IRONGATE
 474         bool
 475         depends on ALPHA_NAUTILUS
 476         default y
 477
 478 config GENERIC_HWEIGHT
 479         bool
 480         default y if !ALPHA_EV67
 481
 482 config ALPHA_AVANTI
 483         bool
 484         depends on ALPHA_XL || ALPHA_AVANTI_CH
 485         default y
 486         help
 487           Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
 488           Alphas. Info at
 489           <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
 490
 491 config ALPHA_BROKEN_IRQ_MASK
 492         bool
 493         depends on ALPHA_GENERIC || ALPHA_PC164
 494         default y
 495
 496 config VGA_HOSE
 497         bool
 498         depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
 499         default y
 500         help
 501           Support VGA on an arbitrary hose; needed for several platforms
 502           which always have multiple hoses, and whose consoles support it.
 503
 504
 505 config ALPHA_SRM
 506         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
 507         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
 508         ---help---
 509           There are two different types of booting firmware on Alphas: SRM,
 510           which is command line driven, and ARC, which uses menus and arrow
 511           keys. Details about the Linux/Alpha booting process are contained in
 512           the Linux/Alpha FAQ, accessible on the WWW from
 513           <http://www.alphalinux.org/>.
 514
 515           The usual way to load Linux on an Alpha machine is to use MILO
 516           (a bootloader that lets you pass command line parameters to the
 517           kernel just like lilo does for the x86 architecture) which can be
 518           loaded either from ARC or can be installed directly as a permanent
 519           firmware replacement from floppy (which requires changing a certain
 520           jumper on the motherboard). If you want to do either of these, say N
 521           here. If MILO doesn't work on your system (true for Jensen
 522           motherboards), you can bypass it altogether and boot Linux directly
 523           from an SRM console; say Y here in order to do that. Note that you
 524           won't be able to boot from an IDE disk using SRM.
 525
 526           If unsure, say N.
 527
 528 config EISA
 529         bool
 530         depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
 531         default y
 532
 533 config ARCH_MAY_HAVE_PC_FDC
 534         def_bool y
 535
 536 config SMP
 537         bool "Symmetric multi-processing support"
 538         depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
 539         select USE_GENERIC_SMP_HELPERS
 540         ---help---
 541           This enables support for systems with more than one CPU. If you have
 542           a system with only one CPU, like most personal computers, say N. If
 543           you have a system with more than one CPU, say Y.
 544
 545           If you say N here, the kernel will run on single and multiprocessor
 546           machines, but will use only one CPU of a multiprocessor machine. If
 547           you say Y here, the kernel will run on many, but not all,
 548           singleprocessor machines. On a singleprocessor machine, the kernel
 549           will run faster if you say N here.
 550
 551           See also the SMP-HOWTO available at
 552           <http://www.tldp.org/docs.html#howto>.
 553
 554           If you don't know what to do here, say N.
 555
 556 config HAVE_DEC_LOCK
 557         bool
 558         depends on SMP
 559         default y
 560
 561 config NR_CPUS
 562         int "Maximum number of CPUs (2-32)"
 563         range 2 32
 564         depends on SMP
 565         default "32" if ALPHA_GENERIC || ALPHA_MARVEL
 566         default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
 567         help
 568           MARVEL support can handle a maximum of 32 CPUs, all the others
 569           with working support have a maximum of 4 CPUs.
 570
 571 config ARCH_DISCONTIGMEM_ENABLE
 572         bool "Discontiguous Memory Support (EXPERIMENTAL)"
 573         depends on EXPERIMENTAL
 574         help
 575           Say Y to support efficient handling of discontiguous physical memory,
 576           for architectures which are either NUMA (Non-Uniform Memory Access)
 577           or have huge holes in the physical address space for other reasons.
 578           See <file:Documentation/vm/numa> for more.
 579
 580 source "mm/Kconfig"
 581
 582 config NUMA
 583         bool "NUMA Support (EXPERIMENTAL)"
 584         depends on DISCONTIGMEM && BROKEN
 585         help
 586           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 587           Access).  This option is for configuring high-end multiprocessor
 588           server machines.  If in doubt, say N.
 589
 590 config NODES_SHIFT
 591         int
 592         default "7"
 593         depends on NEED_MULTIPLE_NODES
 594
 595 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
 596 config ALPHA_LARGE_VMALLOC
 597         bool
 598         ---help---
 599           Process creation and other aspects of virtual memory management can
 600           be streamlined if we restrict the kernel to one PGD for all vmalloc
 601           allocations.  This equates to about 8GB.
 602
 603           Under normal circumstances, this is so far and above what is needed
 604           as to be laughable.  However, there are certain applications (such
 605           as benchmark-grade in-kernel web serving) that can make use of as
 606           much vmalloc space as is available.
 607
 608           Say N unless you know you need gobs and gobs of vmalloc space.
 609
 610 config VERBOSE_MCHECK
 611         bool "Verbose Machine Checks"
 612
 613 config VERBOSE_MCHECK_ON
 614         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
 615         depends on VERBOSE_MCHECK
 616         default 1
 617         ---help---
 618           This option allows the default printing mode to be set, and then
 619           possibly overridden by a boot command argument.
 620
 621           For example, if one wanted the option of printing verbose
 622           machine checks, but wanted the default to be as if verbose
 623           machine check printing was turned off, then one would choose
 624           the printing mode to be 0. Then, upon reboot, one could add
 625           the boot command line "verbose_mcheck=1" to get the normal
 626           verbose machine check printing, or "verbose_mcheck=2" to get
 627           the maximum information available.
 628
 629           Take the default (1) unless you want more control or more info.
 630
 631 config HZ
 632         int
 633         default 1200 if ALPHA_RAWHIDE
 634         default 1024
 635
 636 source "drivers/pci/Kconfig"
 637 source "drivers/eisa/Kconfig"
 638
 639 source "drivers/pcmcia/Kconfig"
 640
 641 config SRM_ENV
 642         tristate "SRM environment through procfs"
 643         depends on PROC_FS
 644         ---help---
 645           If you enable this option, a subdirectory inside /proc called
 646           /proc/srm_environment will give you access to the all important
 647           SRM environment variables (those which have a name) and also
 648           to all others (by their internal number).
 649
 650           SRM is something like a BIOS for Alpha machines. There are some
 651           other such BIOSes, like AlphaBIOS, which this driver cannot
 652           support (hey, that's not SRM!).
 653
 654           Despite the fact that this driver doesn't work on all Alphas (but
 655           only on those which have SRM as their firmware), it's save to
 656           build it even if your particular machine doesn't know about SRM
 657           (or if you intend to compile a generic kernel). It will simply
 658           not create those subdirectory in /proc (and give you some warning,
 659           of course).
 660
 661           This driver is also available as a module and will be called
 662           srm_env then.
 663
 664 source "fs/Kconfig.binfmt"
 665
 666 endmenu
 667
 668 source "net/Kconfig"
 669
 670 source "drivers/Kconfig"
 671
 672 source "fs/Kconfig"
 673
 674 source "arch/alpha/Kconfig.debug"
 675
 676 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
 677 # but we also need it if VGA_HOSE is set
 678 config DUMMY_CONSOLE
 679         bool
 680         depends on VGA_HOSE
 681         default y
 682
 683 source "security/Kconfig"
 684
 685 source "crypto/Kconfig"
 686
 687 source "lib/Kconfig"
 688