1config ALPHA 2 bool 3 default y 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select HAVE_AOUT 6 select HAVE_IDE 7 select HAVE_OPROFILE 8 select HAVE_PCSPKR_PLATFORM 9 select HAVE_PERF_EVENTS 10 select HAVE_DMA_ATTRS 11 select VIRT_TO_BUS 12 select GENERIC_IRQ_PROBE 13 select AUTO_IRQ_AFFINITY if SMP 14 select GENERIC_IRQ_SHOW 15 select ARCH_WANT_OPTIONAL_GPIOLIB 16 select ARCH_WANT_IPC_PARSE_VERSION 17 select ARCH_HAVE_NMI_SAFE_CMPXCHG 18 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 19 select GENERIC_SMP_IDLE_THREAD 20 select GENERIC_STRNCPY_FROM_USER 21 select GENERIC_STRNLEN_USER 22 select HAVE_MOD_ARCH_SPECIFIC 23 select MODULES_USE_ELF_RELA 24 select ODD_RT_SIGACTION 25 select OLD_SIGSUSPEND 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 ZONE_DMA 59 bool 60 default y 61 62config ARCH_DMA_ADDR_T_64BIT 63 def_bool y 64 65config NEED_DMA_MAP_STATE 66 def_bool y 67 68config NEED_SG_DMA_LENGTH 69 def_bool y 70 71config GENERIC_ISA_DMA 72 bool 73 default y 74 75source "init/Kconfig" 76source "kernel/Kconfig.freezer" 77 78 79menu "System setup" 80 81choice 82 prompt "Alpha system type" 83 default ALPHA_GENERIC 84 ---help--- 85 This is the system type of your hardware. A "generic" kernel will 86 run on any supported Alpha system. However, if you configure a 87 kernel for your specific system, it will be faster and smaller. 88 89 To find out what type of Alpha system you have, you may want to 90 check out the Linux/Alpha FAQ, accessible on the WWW from 91 <http://www.alphalinux.org/>. In summary: 92 93 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 94 Alpha-XL XL-233, XL-266 95 AlphaBook1 Alpha laptop 96 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 97 Cabriolet AlphaPC64, AlphaPCI64 98 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 99 EB164 EB164 21164 evaluation board 100 EB64+ EB64+ 21064 evaluation board 101 EB66 EB66 21066 evaluation board 102 EB66+ EB66+ 21066 evaluation board 103 Jensen DECpc 150, DEC 2000 models 300, 500 104 LX164 AlphaPC164-LX 105 Lynx AS 2100A 106 Miata Personal Workstation 433/500/600 a/au 107 Marvel AlphaServer ES47 / ES80 / GS1280 108 Mikasa AS 1000 109 Noname AXPpci33, UDB (Multia) 110 Noritake AS 1000A, AS 600A, AS 800 111 PC164 AlphaPC164 112 Rawhide AS 1200, AS 4000, AS 4100 113 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 114 SX164 AlphaPC164-SX 115 Sable AS 2000, AS 2100 116 Shark DS 20L 117 Takara Takara (OEM) 118 Titan AlphaServer ES45 / DS25 / DS15 119 Wildfire AlphaServer GS 40/80/160/320 120 121 If you don't know what to do, choose "generic". 122 123config ALPHA_GENERIC 124 bool "Generic" 125 depends on TTY 126 help 127 A generic kernel will run on all supported Alpha hardware. 128 129config ALPHA_ALCOR 130 bool "Alcor/Alpha-XLT" 131 help 132 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 133 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 134 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 135 controller (256-bit memory bus) and a PCI interface. It also does 136 all the work required to support an external Bcache and to maintain 137 memory coherence when a PCI device DMAs into (or out of) memory. 138 139config ALPHA_XL 140 bool "Alpha-XL" 141 help 142 XL-233 and XL-266-based Alpha systems. 143 144config ALPHA_BOOK1 145 bool "AlphaBook1" 146 help 147 Dec AlphaBook1/Burns Alpha-based laptops. 148 149config ALPHA_AVANTI_CH 150 bool "Avanti" 151 152config ALPHA_CABRIOLET 153 bool "Cabriolet" 154 help 155 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 156 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 157 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 158 Bcache SIMMs. Requires power supply with 3.3V output. 159 160config ALPHA_DP264 161 bool "DP264" 162 help 163 Various 21264 systems with the tsunami core logic chipset. 164 API Networks: 264DP, UP2000(+), CS20; 165 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 166 167config ALPHA_EB164 168 bool "EB164" 169 help 170 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 171 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 172 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 173 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 174 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 175 motherboard. Requires power supply with 3.3V output. 176 177config ALPHA_EB64P_CH 178 bool "EB64+" 179 180config ALPHA_EB66 181 bool "EB66" 182 help 183 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 184 identical to EB64+. Baby PC-AT size. Runs from standard PC power 185 supply. The EB66 schematic was published as a marketing poster 186 advertising the 21066 as "the first microprocessor in the world with 187 embedded PCI". 188 189config ALPHA_EB66P 190 bool "EB66+" 191 help 192 Later variant of the EB66 board. 193 194config ALPHA_EIGER 195 bool "Eiger" 196 help 197 Apparently an obscure OEM single-board computer based on the 198 Typhoon/Tsunami chipset family. Information on it is scanty. 199 200config ALPHA_JENSEN 201 bool "Jensen" 202 help 203 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one 204 of the first-generation Alpha systems. A number of these systems 205 seem to be available on the second- hand market. The Jensen is a 206 floor-standing tower system which originally used a 150MHz 21064 It 207 used programmable logic to interface a 486 EISA I/O bridge to the 208 CPU. 209 210config ALPHA_LX164 211 bool "LX164" 212 help 213 A technical overview of this board is available at 214 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. 215 216config ALPHA_LYNX 217 bool "Lynx" 218 help 219 AlphaServer 2100A-based systems. 220 221config ALPHA_MARVEL 222 bool "Marvel" 223 help 224 AlphaServer ES47 / ES80 / GS1280 based on EV7. 225 226config ALPHA_MIATA 227 bool "Miata" 228 help 229 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, 230 or 600au). 231 232config ALPHA_MIKASA 233 bool "Mikasa" 234 help 235 AlphaServer 1000-based Alpha systems. 236 237config ALPHA_NAUTILUS 238 bool "Nautilus" 239 help 240 Alpha systems based on the AMD 751 & ALI 1543C chipsets. 241 242config ALPHA_NONAME_CH 243 bool "Noname" 244 245config ALPHA_NORITAKE 246 bool "Noritake" 247 help 248 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based 249 systems. 250 251config ALPHA_PC164 252 bool "PC164" 253 254config ALPHA_P2K 255 bool "Platform2000" 256 257config ALPHA_RAWHIDE 258 bool "Rawhide" 259 help 260 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. 261 See HOWTO at 262 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. 263 264config ALPHA_RUFFIAN 265 bool "Ruffian" 266 help 267 Samsung APC164UX. There is a page on known problems and workarounds 268 at <http://www.alphalinux.org/faq/FAQ-11.html>. 269 270config ALPHA_RX164 271 bool "RX164" 272 273config ALPHA_SX164 274 bool "SX164" 275 276config ALPHA_SABLE 277 bool "Sable" 278 help 279 Digital AlphaServer 2000 and 2100-based systems. 280 281config ALPHA_SHARK 282 bool "Shark" 283 284config ALPHA_TAKARA 285 bool "Takara" 286 help 287 Alpha 11164-based OEM single-board computer. 288 289config ALPHA_TITAN 290 bool "Titan" 291 help 292 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. 293 294config ALPHA_WILDFIRE 295 bool "Wildfire" 296 help 297 AlphaServer GS 40/80/160/320 SMP based on the EV67 core. 298 299endchoice 300 301# clear all implied options (don't want default values for those): 302# Most of these machines have ISA slots; not exactly sure which don't, 303# and this doesn't activate hordes of code, so do it always. 304config ISA 305 bool 306 default y 307 help 308 Find out whether you have ISA slots on your motherboard. ISA is the 309 name of a bus system, i.e. the way the CPU talks to the other stuff 310 inside your box. Other bus systems are PCI, EISA, MicroChannel 311 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 312 newer boards don't support it. If you have ISA, say Y, otherwise N. 313 314config ISA_DMA_API 315 bool 316 default y 317 318config PCI 319 bool 320 depends on !ALPHA_JENSEN 321 select GENERIC_PCI_IOMAP 322 default y 323 help 324 Find out whether you have a PCI motherboard. PCI is the name of a 325 bus system, i.e. the way the CPU talks to the other stuff inside 326 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 327 VESA. If you have PCI, say Y, otherwise N. 328 329config PCI_DOMAINS 330 bool 331 default y 332 333config PCI_SYSCALL 334 def_bool PCI 335 336config IOMMU_HELPER 337 def_bool PCI 338 339config ALPHA_NONAME 340 bool 341 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 342 default y 343 help 344 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 345 UDB). This design was produced by Digital's Technical OEM (TOEM) 346 group. It uses the 21066 processor running at 166MHz or 233MHz. It 347 is a baby-AT size, and runs from a standard PC power supply. It has 348 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 349 2 versions, with either PS/2 or large DIN connectors for the 350 keyboard. 351 352config ALPHA_EV4 353 bool 354 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 355 default y if !ALPHA_LYNX 356 357config ALPHA_LCA 358 bool 359 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 360 default y 361 362config ALPHA_APECS 363 bool 364 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 365 default y 366 367config ALPHA_EB64P 368 bool 369 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 370 default y 371 help 372 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 373 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 374 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 375 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 376 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 377 Runs from standard PC power supply. 378 379config ALPHA_EV5 380 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 381 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 382 383config ALPHA_EV4 384 bool 385 default y if ALPHA_LYNX && !ALPHA_EV5 386 387config ALPHA_CIA 388 bool 389 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 390 default y 391 392config ALPHA_EV56 393 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 394 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 395 396config ALPHA_EV56 397 prompt "EV56 CPU (speed >= 333MHz)?" 398 depends on ALPHA_NORITAKE || ALPHA_PRIMO 399 400config ALPHA_EV56 401 prompt "EV56 CPU (speed >= 400MHz)?" 402 depends on ALPHA_RAWHIDE 403 404config ALPHA_PRIMO 405 bool "EV5 CPU daughtercard (model 5/xxx)?" 406 depends on ALPHA_NORITAKE || ALPHA_MIKASA 407 help 408 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 409 410config ALPHA_GAMMA 411 bool "EV5 CPU(s) (model 5/xxx)?" 412 depends on ALPHA_SABLE 413 help 414 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 415 416config ALPHA_GAMMA 417 bool 418 depends on ALPHA_LYNX 419 default y 420 421config ALPHA_T2 422 bool 423 depends on ALPHA_SABLE || ALPHA_LYNX 424 default y 425 426config ALPHA_PYXIS 427 bool 428 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 429 default y 430 431config ALPHA_EV6 432 bool 433 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 434 default y 435 436config ALPHA_TSUNAMI 437 bool 438 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 439 default y 440 441config ALPHA_EV67 442 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 443 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 444 help 445 Is this a machine based on the EV67 core? If in doubt, select N here 446 and the machine will be treated as an EV6. 447 448config ALPHA_MCPCIA 449 bool 450 depends on ALPHA_RAWHIDE 451 default y 452 453config ALPHA_POLARIS 454 bool 455 depends on ALPHA_RX164 456 default y 457 458config ALPHA_IRONGATE 459 bool 460 depends on ALPHA_NAUTILUS 461 default y 462 463config GENERIC_HWEIGHT 464 bool 465 default y if !ALPHA_EV67 466 467config ALPHA_AVANTI 468 bool 469 depends on ALPHA_XL || ALPHA_AVANTI_CH 470 default y 471 help 472 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 473 Alphas. Info at 474 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 475 476config ALPHA_BROKEN_IRQ_MASK 477 bool 478 depends on ALPHA_GENERIC || ALPHA_PC164 479 default y 480 481config VGA_HOSE 482 bool 483 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 484 default y 485 help 486 Support VGA on an arbitrary hose; needed for several platforms 487 which always have multiple hoses, and whose consoles support it. 488 489 490config ALPHA_QEMU 491 bool "Run under QEMU emulation" 492 depends on !ALPHA_GENERIC 493 ---help--- 494 Assume the presence of special features supported by QEMU PALcode 495 that reduce the overhead of system emulation. 496 497 Generic kernels will auto-detect QEMU. But when building a 498 system-specific kernel, the assumption is that we want to 499 elimiate as many runtime tests as possible. 500 501 If unsure, say N. 502 503 504config ALPHA_SRM 505 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 506 depends on TTY 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 528config 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 533config ARCH_MAY_HAVE_PC_FDC 534 def_bool y 535 536config 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 ---help--- 540 This enables support for systems with more than one CPU. If you have 541 a system with only one CPU, like most personal computers, say N. If 542 you have a system with more than one CPU, say Y. 543 544 If you say N here, the kernel will run on single and multiprocessor 545 machines, but will use only one CPU of a multiprocessor machine. If 546 you say Y here, the kernel will run on many, but not all, 547 singleprocessor machines. On a singleprocessor machine, the kernel 548 will run faster if you say N here. 549 550 See also the SMP-HOWTO available at 551 <http://www.tldp.org/docs.html#howto>. 552 553 If you don't know what to do here, say N. 554 555config HAVE_DEC_LOCK 556 bool 557 depends on SMP 558 default y 559 560config NR_CPUS 561 int "Maximum number of CPUs (2-32)" 562 range 2 32 563 depends on SMP 564 default "32" if ALPHA_GENERIC || ALPHA_MARVEL 565 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL 566 help 567 MARVEL support can handle a maximum of 32 CPUs, all the others 568 with working support have a maximum of 4 CPUs. 569 570config ARCH_DISCONTIGMEM_ENABLE 571 bool "Discontiguous Memory Support" 572 help 573 Say Y to support efficient handling of discontiguous physical memory, 574 for architectures which are either NUMA (Non-Uniform Memory Access) 575 or have huge holes in the physical address space for other reasons. 576 See <file:Documentation/vm/numa> for more. 577 578source "mm/Kconfig" 579 580config NUMA 581 bool "NUMA Support (EXPERIMENTAL)" 582 depends on DISCONTIGMEM && BROKEN 583 help 584 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 585 Access). This option is for configuring high-end multiprocessor 586 server machines. If in doubt, say N. 587 588config ALPHA_WTINT 589 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC 590 default y if ALPHA_QEMU 591 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) 592 default n if !ALPHA_SRM && !ALPHA_GENERIC 593 default y if SMP 594 ---help--- 595 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU 596 to sleep until the next interrupt. This may reduce the power 597 consumed, and the heat produced by the computer. However, it has 598 the side effect of making the cycle counter unreliable as a timing 599 device across the sleep. 600 601 For emulation under QEMU, definitely say Y here, as we have other 602 mechanisms for measuring time than the cycle counter. 603 604 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running 605 MILO, sleep mode is not supported so you might as well say N here. 606 607 For SMP systems we cannot use the cycle counter for timing anyway, 608 so you might as well say Y here. 609 610 If unsure, say N. 611 612config NODES_SHIFT 613 int 614 default "7" 615 depends on NEED_MULTIPLE_NODES 616 617# LARGE_VMALLOC is racy, if you *really* need it then fix it first 618config ALPHA_LARGE_VMALLOC 619 bool 620 ---help--- 621 Process creation and other aspects of virtual memory management can 622 be streamlined if we restrict the kernel to one PGD for all vmalloc 623 allocations. This equates to about 8GB. 624 625 Under normal circumstances, this is so far and above what is needed 626 as to be laughable. However, there are certain applications (such 627 as benchmark-grade in-kernel web serving) that can make use of as 628 much vmalloc space as is available. 629 630 Say N unless you know you need gobs and gobs of vmalloc space. 631 632config VERBOSE_MCHECK 633 bool "Verbose Machine Checks" 634 635config VERBOSE_MCHECK_ON 636 int "Verbose Printing Mode (0=off, 1=on, 2=all)" 637 depends on VERBOSE_MCHECK 638 default 1 639 ---help--- 640 This option allows the default printing mode to be set, and then 641 possibly overridden by a boot command argument. 642 643 For example, if one wanted the option of printing verbose 644 machine checks, but wanted the default to be as if verbose 645 machine check printing was turned off, then one would choose 646 the printing mode to be 0. Then, upon reboot, one could add 647 the boot command line "verbose_mcheck=1" to get the normal 648 verbose machine check printing, or "verbose_mcheck=2" to get 649 the maximum information available. 650 651 Take the default (1) unless you want more control or more info. 652 653choice 654 prompt "Timer interrupt frequency (HZ)?" 655 default HZ_128 if ALPHA_QEMU 656 default HZ_1200 if ALPHA_RAWHIDE 657 default HZ_1024 658 ---help--- 659 The frequency at which timer interrupts occur. A high frequency 660 minimizes latency, whereas a low frequency minimizes overhead of 661 process accounting. The later effect is especially significant 662 when being run under QEMU. 663 664 Note that some Alpha hardware cannot change the interrupt frequency 665 of the timer. If unsure, say 1024 (or 1200 for Rawhide). 666 667 config HZ_32 668 bool "32 Hz" 669 config HZ_64 670 bool "64 Hz" 671 config HZ_128 672 bool "128 Hz" 673 config HZ_256 674 bool "256 Hz" 675 config HZ_1024 676 bool "1024 Hz" 677 config HZ_1200 678 bool "1200 Hz" 679endchoice 680 681config HZ 682 int 683 default 32 if HZ_32 684 default 64 if HZ_64 685 default 128 if HZ_128 686 default 256 if HZ_256 687 default 1200 if HZ_1200 688 default 1024 689 690source "drivers/pci/Kconfig" 691source "drivers/eisa/Kconfig" 692 693source "drivers/pcmcia/Kconfig" 694 695config SRM_ENV 696 tristate "SRM environment through procfs" 697 depends on PROC_FS 698 ---help--- 699 If you enable this option, a subdirectory inside /proc called 700 /proc/srm_environment will give you access to the all important 701 SRM environment variables (those which have a name) and also 702 to all others (by their internal number). 703 704 SRM is something like a BIOS for Alpha machines. There are some 705 other such BIOSes, like AlphaBIOS, which this driver cannot 706 support (hey, that's not SRM!). 707 708 Despite the fact that this driver doesn't work on all Alphas (but 709 only on those which have SRM as their firmware), it's save to 710 build it even if your particular machine doesn't know about SRM 711 (or if you intend to compile a generic kernel). It will simply 712 not create those subdirectory in /proc (and give you some warning, 713 of course). 714 715 This driver is also available as a module and will be called 716 srm_env then. 717 718source "fs/Kconfig.binfmt" 719 720endmenu 721 722source "net/Kconfig" 723 724source "drivers/Kconfig" 725 726source "fs/Kconfig" 727 728source "arch/alpha/Kconfig.debug" 729 730# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig 731# but we also need it if VGA_HOSE is set 732config DUMMY_CONSOLE 733 bool 734 depends on VGA_HOSE 735 default y 736 737source "security/Kconfig" 738 739source "crypto/Kconfig" 740 741source "lib/Kconfig" 742 743