1config ALPHA 2 bool 3 default y 4 select HAVE_AOUT 5 select HAVE_IDE 6 select HAVE_OPROFILE 7 select HAVE_SYSCALL_WRAPPERS 8 select HAVE_IRQ_WORK 9 select HAVE_PCSPKR_PLATFORM 10 select HAVE_PERF_EVENTS 11 select HAVE_DMA_ATTRS 12 select HAVE_GENERIC_HARDIRQS 13 select GENERIC_IRQ_PROBE 14 select AUTO_IRQ_AFFINITY if SMP 15 select GENERIC_IRQ_SHOW 16 select ARCH_WANT_OPTIONAL_GPIOLIB 17 select ARCH_WANT_IPC_PARSE_VERSION 18 select ARCH_HAVE_NMI_SAFE_CMPXCHG 19 select GENERIC_SMP_IDLE_THREAD 20 select GENERIC_CMOS_UPDATE 21 select GENERIC_STRNCPY_FROM_USER 22 select GENERIC_STRNLEN_USER 23 select HAVE_MOD_ARCH_SPECIFIC 24 select MODULES_USE_ELF_RELA 25 select GENERIC_SIGALTSTACK 26 help 27 The Alpha is a 64-bit general-purpose processor designed and 28 marketed by the Digital Equipment Corporation of blessed memory, 29 now Hewlett-Packard. The Alpha Linux project has a home page at 30 <http://www.alphalinux.org/>. 31 32config 64BIT 33 def_bool y 34 35config MMU 36 bool 37 default y 38 39config RWSEM_GENERIC_SPINLOCK 40 bool 41 42config RWSEM_XCHGADD_ALGORITHM 43 bool 44 default y 45 46config ARCH_HAS_ILOG2_U32 47 bool 48 default n 49 50config ARCH_HAS_ILOG2_U64 51 bool 52 default n 53 54config GENERIC_CALIBRATE_DELAY 55 bool 56 default y 57 58config GENERIC_GPIO 59 bool 60 61config ZONE_DMA 62 bool 63 default y 64 65config ARCH_DMA_ADDR_T_64BIT 66 def_bool y 67 68config NEED_DMA_MAP_STATE 69 def_bool y 70 71config NEED_SG_DMA_LENGTH 72 def_bool y 73 74config GENERIC_ISA_DMA 75 bool 76 default y 77 78source "init/Kconfig" 79source "kernel/Kconfig.freezer" 80 81 82menu "System setup" 83 84choice 85 prompt "Alpha system type" 86 default ALPHA_GENERIC 87 ---help--- 88 This is the system type of your hardware. A "generic" kernel will 89 run on any supported Alpha system. However, if you configure a 90 kernel for your specific system, it will be faster and smaller. 91 92 To find out what type of Alpha system you have, you may want to 93 check out the Linux/Alpha FAQ, accessible on the WWW from 94 <http://www.alphalinux.org/>. In summary: 95 96 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 97 Alpha-XL XL-233, XL-266 98 AlphaBook1 Alpha laptop 99 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 100 Cabriolet AlphaPC64, AlphaPCI64 101 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 102 EB164 EB164 21164 evaluation board 103 EB64+ EB64+ 21064 evaluation board 104 EB66 EB66 21066 evaluation board 105 EB66+ EB66+ 21066 evaluation board 106 Jensen DECpc 150, DEC 2000 models 300, 500 107 LX164 AlphaPC164-LX 108 Lynx AS 2100A 109 Miata Personal Workstation 433/500/600 a/au 110 Marvel AlphaServer ES47 / ES80 / GS1280 111 Mikasa AS 1000 112 Noname AXPpci33, UDB (Multia) 113 Noritake AS 1000A, AS 600A, AS 800 114 PC164 AlphaPC164 115 Rawhide AS 1200, AS 4000, AS 4100 116 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 117 SX164 AlphaPC164-SX 118 Sable AS 2000, AS 2100 119 Shark DS 20L 120 Takara Takara (OEM) 121 Titan AlphaServer ES45 / DS25 / DS15 122 Wildfire AlphaServer GS 40/80/160/320 123 124 If you don't know what to do, choose "generic". 125 126config ALPHA_GENERIC 127 bool "Generic" 128 help 129 A generic kernel will run on all supported Alpha hardware. 130 131config ALPHA_ALCOR 132 bool "Alcor/Alpha-XLT" 133 help 134 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 135 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 136 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 137 controller (256-bit memory bus) and a PCI interface. It also does 138 all the work required to support an external Bcache and to maintain 139 memory coherence when a PCI device DMAs into (or out of) memory. 140 141config ALPHA_XL 142 bool "Alpha-XL" 143 help 144 XL-233 and XL-266-based Alpha systems. 145 146config ALPHA_BOOK1 147 bool "AlphaBook1" 148 help 149 Dec AlphaBook1/Burns Alpha-based laptops. 150 151config ALPHA_AVANTI_CH 152 bool "Avanti" 153 154config ALPHA_CABRIOLET 155 bool "Cabriolet" 156 help 157 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 158 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 159 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 160 Bcache SIMMs. Requires power supply with 3.3V output. 161 162config ALPHA_DP264 163 bool "DP264" 164 help 165 Various 21264 systems with the tsunami core logic chipset. 166 API Networks: 264DP, UP2000(+), CS20; 167 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 168 169config ALPHA_EB164 170 bool "EB164" 171 help 172 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 173 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 174 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 175 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 176 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 177 motherboard. Requires power supply with 3.3V output. 178 179config ALPHA_EB64P_CH 180 bool "EB64+" 181 182config ALPHA_EB66 183 bool "EB66" 184 help 185 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 186 identical to EB64+. Baby PC-AT size. Runs from standard PC power 187 supply. The EB66 schematic was published as a marketing poster 188 advertising the 21066 as "the first microprocessor in the world with 189 embedded PCI". 190 191config ALPHA_EB66P 192 bool "EB66+" 193 help 194 Later variant of the EB66 board. 195 196config ALPHA_EIGER 197 bool "Eiger" 198 help 199 Apparently an obscure OEM single-board computer based on the 200 Typhoon/Tsunami chipset family. Information on it is scanty. 201 202config ALPHA_JENSEN 203 bool "Jensen" 204 help 205 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one 206 of the first-generation Alpha systems. A number of these systems 207 seem to be available on the second- hand market. The Jensen is a 208 floor-standing tower system which originally used a 150MHz 21064 It 209 used programmable logic to interface a 486 EISA I/O bridge to the 210 CPU. 211 212config ALPHA_LX164 213 bool "LX164" 214 help 215 A technical overview of this board is available at 216 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. 217 218config ALPHA_LYNX 219 bool "Lynx" 220 help 221 AlphaServer 2100A-based systems. 222 223config ALPHA_MARVEL 224 bool "Marvel" 225 help 226 AlphaServer ES47 / ES80 / GS1280 based on EV7. 227 228config ALPHA_MIATA 229 bool "Miata" 230 help 231 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, 232 or 600au). 233 234config ALPHA_MIKASA 235 bool "Mikasa" 236 help 237 AlphaServer 1000-based Alpha systems. 238 239config ALPHA_NAUTILUS 240 bool "Nautilus" 241 help 242 Alpha systems based on the AMD 751 & ALI 1543C chipsets. 243 244config ALPHA_NONAME_CH 245 bool "Noname" 246 247config ALPHA_NORITAKE 248 bool "Noritake" 249 help 250 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based 251 systems. 252 253config ALPHA_PC164 254 bool "PC164" 255 256config ALPHA_P2K 257 bool "Platform2000" 258 259config ALPHA_RAWHIDE 260 bool "Rawhide" 261 help 262 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. 263 See HOWTO at 264 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. 265 266config ALPHA_RUFFIAN 267 bool "Ruffian" 268 help 269 Samsung APC164UX. There is a page on known problems and workarounds 270 at <http://www.alphalinux.org/faq/FAQ-11.html>. 271 272config ALPHA_RX164 273 bool "RX164" 274 275config ALPHA_SX164 276 bool "SX164" 277 278config ALPHA_SABLE 279 bool "Sable" 280 help 281 Digital AlphaServer 2000 and 2100-based systems. 282 283config ALPHA_SHARK 284 bool "Shark" 285 286config ALPHA_TAKARA 287 bool "Takara" 288 help 289 Alpha 11164-based OEM single-board computer. 290 291config ALPHA_TITAN 292 bool "Titan" 293 help 294 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. 295 296config ALPHA_WILDFIRE 297 bool "Wildfire" 298 help 299 AlphaServer GS 40/80/160/320 SMP based on the EV67 core. 300 301endchoice 302 303# clear all implied options (don't want default values for those): 304# Most of these machines have ISA slots; not exactly sure which don't, 305# and this doesn't activate hordes of code, so do it always. 306config ISA 307 bool 308 default y 309 help 310 Find out whether you have ISA slots on your motherboard. ISA is the 311 name of a bus system, i.e. the way the CPU talks to the other stuff 312 inside your box. Other bus systems are PCI, EISA, MicroChannel 313 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 314 newer boards don't support it. If you have ISA, say Y, otherwise N. 315 316config ISA_DMA_API 317 bool 318 default y 319 320config PCI 321 bool 322 depends on !ALPHA_JENSEN 323 select GENERIC_PCI_IOMAP 324 default y 325 help 326 Find out whether you have a PCI motherboard. PCI is the name of a 327 bus system, i.e. the way the CPU talks to the other stuff inside 328 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 329 VESA. If you have PCI, say Y, otherwise N. 330 331config PCI_DOMAINS 332 bool 333 default y 334 335config PCI_SYSCALL 336 def_bool PCI 337 338config IOMMU_HELPER 339 def_bool PCI 340 341config ALPHA_NONAME 342 bool 343 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 344 default y 345 help 346 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 347 UDB). This design was produced by Digital's Technical OEM (TOEM) 348 group. It uses the 21066 processor running at 166MHz or 233MHz. It 349 is a baby-AT size, and runs from a standard PC power supply. It has 350 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 351 2 versions, with either PS/2 or large DIN connectors for the 352 keyboard. 353 354config ALPHA_EV4 355 bool 356 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 357 default y if !ALPHA_LYNX 358 359config ALPHA_LCA 360 bool 361 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 362 default y 363 364config ALPHA_APECS 365 bool 366 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 367 default y 368 369config ALPHA_EB64P 370 bool 371 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 372 default y 373 help 374 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 375 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 376 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 377 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 378 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 379 Runs from standard PC power supply. 380 381config ALPHA_EV5 382 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 383 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 384 385config ALPHA_EV4 386 bool 387 default y if ALPHA_LYNX && !ALPHA_EV5 388 389config ALPHA_CIA 390 bool 391 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 392 default y 393 394config ALPHA_EV56 395 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 396 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 397 398config ALPHA_EV56 399 prompt "EV56 CPU (speed >= 333MHz)?" 400 depends on ALPHA_NORITAKE || ALPHA_PRIMO 401 402config ALPHA_EV56 403 prompt "EV56 CPU (speed >= 400MHz)?" 404 depends on ALPHA_RAWHIDE 405 406config ALPHA_PRIMO 407 bool "EV5 CPU daughtercard (model 5/xxx)?" 408 depends on ALPHA_NORITAKE || ALPHA_MIKASA 409 help 410 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 411 412config ALPHA_GAMMA 413 bool "EV5 CPU(s) (model 5/xxx)?" 414 depends on ALPHA_SABLE 415 help 416 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 417 418config ALPHA_GAMMA 419 bool 420 depends on ALPHA_LYNX 421 default y 422 423config ALPHA_T2 424 bool 425 depends on ALPHA_SABLE || ALPHA_LYNX 426 default y 427 428config ALPHA_PYXIS 429 bool 430 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 431 default y 432 433config ALPHA_EV6 434 bool 435 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 436 default y 437 438config ALPHA_TSUNAMI 439 bool 440 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 441 default y 442 443config ALPHA_EV67 444 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 445 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 446 help 447 Is this a machine based on the EV67 core? If in doubt, select N here 448 and the machine will be treated as an EV6. 449 450config ALPHA_MCPCIA 451 bool 452 depends on ALPHA_RAWHIDE 453 default y 454 455config ALPHA_POLARIS 456 bool 457 depends on ALPHA_RX164 458 default y 459 460config ALPHA_IRONGATE 461 bool 462 depends on ALPHA_NAUTILUS 463 default y 464 465config GENERIC_HWEIGHT 466 bool 467 default y if !ALPHA_EV67 468 469config ALPHA_AVANTI 470 bool 471 depends on ALPHA_XL || ALPHA_AVANTI_CH 472 default y 473 help 474 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 475 Alphas. Info at 476 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 477 478config ALPHA_BROKEN_IRQ_MASK 479 bool 480 depends on ALPHA_GENERIC || ALPHA_PC164 481 default y 482 483config VGA_HOSE 484 bool 485 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 486 default y 487 help 488 Support VGA on an arbitrary hose; needed for several platforms 489 which always have multiple hoses, and whose consoles support it. 490 491 492config ALPHA_SRM 493 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 494 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 495 ---help--- 496 There are two different types of booting firmware on Alphas: SRM, 497 which is command line driven, and ARC, which uses menus and arrow 498 keys. Details about the Linux/Alpha booting process are contained in 499 the Linux/Alpha FAQ, accessible on the WWW from 500 <http://www.alphalinux.org/>. 501 502 The usual way to load Linux on an Alpha machine is to use MILO 503 (a bootloader that lets you pass command line parameters to the 504 kernel just like lilo does for the x86 architecture) which can be 505 loaded either from ARC or can be installed directly as a permanent 506 firmware replacement from floppy (which requires changing a certain 507 jumper on the motherboard). If you want to do either of these, say N 508 here. If MILO doesn't work on your system (true for Jensen 509 motherboards), you can bypass it altogether and boot Linux directly 510 from an SRM console; say Y here in order to do that. Note that you 511 won't be able to boot from an IDE disk using SRM. 512 513 If unsure, say N. 514 515config EISA 516 bool 517 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE 518 default y 519 520config ARCH_MAY_HAVE_PC_FDC 521 def_bool y 522 523config SMP 524 bool "Symmetric multi-processing support" 525 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL 526 select USE_GENERIC_SMP_HELPERS 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 543config HAVE_DEC_LOCK 544 bool 545 depends on SMP 546 default y 547 548config 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 558config 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 567source "mm/Kconfig" 568 569config 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 577config 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 583config 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 597config VERBOSE_MCHECK 598 bool "Verbose Machine Checks" 599 600config 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 618config HZ 619 int 620 default 1200 if ALPHA_RAWHIDE 621 default 1024 622 623source "drivers/pci/Kconfig" 624source "drivers/eisa/Kconfig" 625 626source "drivers/pcmcia/Kconfig" 627 628config 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 651source "fs/Kconfig.binfmt" 652 653endmenu 654 655source "net/Kconfig" 656 657source "drivers/Kconfig" 658 659source "fs/Kconfig" 660 661source "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 665config DUMMY_CONSOLE 666 bool 667 depends on VGA_HOSE 668 default y 669 670source "security/Kconfig" 671 672source "crypto/Kconfig" 673 674source "lib/Kconfig" 675 676