1config ALPHA 2 bool 3 default y 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select ARCH_MIGHT_HAVE_PC_SERIO 6 select HAVE_AOUT 7 select HAVE_IDE 8 select HAVE_OPROFILE 9 select HAVE_PCSPKR_PLATFORM 10 select HAVE_PERF_EVENTS 11 select HAVE_DMA_ATTRS 12 select VIRT_TO_BUS 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 ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 20 select AUDIT_ARCH 21 select GENERIC_CLOCKEVENTS 22 select GENERIC_SMP_IDLE_THREAD 23 select GENERIC_STRNCPY_FROM_USER 24 select GENERIC_STRNLEN_USER 25 select HAVE_MOD_ARCH_SPECIFIC 26 select MODULES_USE_ELF_RELA 27 select ODD_RT_SIGACTION 28 select OLD_SIGSUSPEND 29 help 30 The Alpha is a 64-bit general-purpose processor designed and 31 marketed by the Digital Equipment Corporation of blessed memory, 32 now Hewlett-Packard. The Alpha Linux project has a home page at 33 <http://www.alphalinux.org/>. 34 35config 64BIT 36 def_bool y 37 38config MMU 39 bool 40 default y 41 42config RWSEM_GENERIC_SPINLOCK 43 bool 44 45config RWSEM_XCHGADD_ALGORITHM 46 bool 47 default y 48 49config ARCH_HAS_ILOG2_U32 50 bool 51 default n 52 53config ARCH_HAS_ILOG2_U64 54 bool 55 default n 56 57config GENERIC_CALIBRATE_DELAY 58 bool 59 default y 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 81config AUDIT_ARCH 82 bool 83 84menu "System setup" 85 86choice 87 prompt "Alpha system type" 88 default ALPHA_GENERIC 89 ---help--- 90 This is the system type of your hardware. A "generic" kernel will 91 run on any supported Alpha system. However, if you configure a 92 kernel for your specific system, it will be faster and smaller. 93 94 To find out what type of Alpha system you have, you may want to 95 check out the Linux/Alpha FAQ, accessible on the WWW from 96 <http://www.alphalinux.org/>. In summary: 97 98 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 99 Alpha-XL XL-233, XL-266 100 AlphaBook1 Alpha laptop 101 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 102 Cabriolet AlphaPC64, AlphaPCI64 103 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 104 EB164 EB164 21164 evaluation board 105 EB64+ EB64+ 21064 evaluation board 106 EB66 EB66 21066 evaluation board 107 EB66+ EB66+ 21066 evaluation board 108 Jensen DECpc 150, DEC 2000 models 300, 500 109 LX164 AlphaPC164-LX 110 Lynx AS 2100A 111 Miata Personal Workstation 433/500/600 a/au 112 Marvel AlphaServer ES47 / ES80 / GS1280 113 Mikasa AS 1000 114 Noname AXPpci33, UDB (Multia) 115 Noritake AS 1000A, AS 600A, AS 800 116 PC164 AlphaPC164 117 Rawhide AS 1200, AS 4000, AS 4100 118 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 119 SX164 AlphaPC164-SX 120 Sable AS 2000, AS 2100 121 Shark DS 20L 122 Takara Takara (OEM) 123 Titan AlphaServer ES45 / DS25 / DS15 124 Wildfire AlphaServer GS 40/80/160/320 125 126 If you don't know what to do, choose "generic". 127 128config ALPHA_GENERIC 129 bool "Generic" 130 depends on TTY 131 help 132 A generic kernel will run on all supported Alpha hardware. 133 134config ALPHA_ALCOR 135 bool "Alcor/Alpha-XLT" 136 help 137 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 138 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 139 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 140 controller (256-bit memory bus) and a PCI interface. It also does 141 all the work required to support an external Bcache and to maintain 142 memory coherence when a PCI device DMAs into (or out of) memory. 143 144config ALPHA_XL 145 bool "Alpha-XL" 146 help 147 XL-233 and XL-266-based Alpha systems. 148 149config ALPHA_BOOK1 150 bool "AlphaBook1" 151 help 152 Dec AlphaBook1/Burns Alpha-based laptops. 153 154config ALPHA_AVANTI_CH 155 bool "Avanti" 156 157config ALPHA_CABRIOLET 158 bool "Cabriolet" 159 help 160 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 161 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 162 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 163 Bcache SIMMs. Requires power supply with 3.3V output. 164 165config ALPHA_DP264 166 bool "DP264" 167 help 168 Various 21264 systems with the tsunami core logic chipset. 169 API Networks: 264DP, UP2000(+), CS20; 170 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 171 172config ALPHA_EB164 173 bool "EB164" 174 help 175 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 176 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 177 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 178 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 179 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 180 motherboard. Requires power supply with 3.3V output. 181 182config ALPHA_EB64P_CH 183 bool "EB64+" 184 185config ALPHA_EB66 186 bool "EB66" 187 help 188 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 189 identical to EB64+. Baby PC-AT size. Runs from standard PC power 190 supply. The EB66 schematic was published as a marketing poster 191 advertising the 21066 as "the first microprocessor in the world with 192 embedded PCI". 193 194config ALPHA_EB66P 195 bool "EB66+" 196 help 197 Later variant of the EB66 board. 198 199config ALPHA_EIGER 200 bool "Eiger" 201 help 202 Apparently an obscure OEM single-board computer based on the 203 Typhoon/Tsunami chipset family. Information on it is scanty. 204 205config ALPHA_JENSEN 206 bool "Jensen" 207 help 208 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one 209 of the first-generation Alpha systems. A number of these systems 210 seem to be available on the second- hand market. The Jensen is a 211 floor-standing tower system which originally used a 150MHz 21064 It 212 used programmable logic to interface a 486 EISA I/O bridge to the 213 CPU. 214 215config ALPHA_LX164 216 bool "LX164" 217 help 218 A technical overview of this board is available at 219 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. 220 221config ALPHA_LYNX 222 bool "Lynx" 223 help 224 AlphaServer 2100A-based systems. 225 226config ALPHA_MARVEL 227 bool "Marvel" 228 help 229 AlphaServer ES47 / ES80 / GS1280 based on EV7. 230 231config ALPHA_MIATA 232 bool "Miata" 233 help 234 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, 235 or 600au). 236 237config ALPHA_MIKASA 238 bool "Mikasa" 239 help 240 AlphaServer 1000-based Alpha systems. 241 242config ALPHA_NAUTILUS 243 bool "Nautilus" 244 help 245 Alpha systems based on the AMD 751 & ALI 1543C chipsets. 246 247config ALPHA_NONAME_CH 248 bool "Noname" 249 250config ALPHA_NORITAKE 251 bool "Noritake" 252 help 253 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based 254 systems. 255 256config ALPHA_PC164 257 bool "PC164" 258 259config ALPHA_P2K 260 bool "Platform2000" 261 262config ALPHA_RAWHIDE 263 bool "Rawhide" 264 help 265 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. 266 See HOWTO at 267 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. 268 269config ALPHA_RUFFIAN 270 bool "Ruffian" 271 help 272 Samsung APC164UX. There is a page on known problems and workarounds 273 at <http://www.alphalinux.org/faq/FAQ-11.html>. 274 275config ALPHA_RX164 276 bool "RX164" 277 278config ALPHA_SX164 279 bool "SX164" 280 281config ALPHA_SABLE 282 bool "Sable" 283 help 284 Digital AlphaServer 2000 and 2100-based systems. 285 286config ALPHA_SHARK 287 bool "Shark" 288 289config ALPHA_TAKARA 290 bool "Takara" 291 help 292 Alpha 11164-based OEM single-board computer. 293 294config ALPHA_TITAN 295 bool "Titan" 296 help 297 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. 298 299config ALPHA_WILDFIRE 300 bool "Wildfire" 301 help 302 AlphaServer GS 40/80/160/320 SMP based on the EV67 core. 303 304endchoice 305 306# clear all implied options (don't want default values for those): 307# Most of these machines have ISA slots; not exactly sure which don't, 308# and this doesn't activate hordes of code, so do it always. 309config ISA 310 bool 311 default y 312 help 313 Find out whether you have ISA slots on your motherboard. ISA is the 314 name of a bus system, i.e. the way the CPU talks to the other stuff 315 inside your box. Other bus systems are PCI, EISA, MicroChannel 316 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 317 newer boards don't support it. If you have ISA, say Y, otherwise N. 318 319config ISA_DMA_API 320 bool 321 default y 322 323config PCI 324 bool 325 depends on !ALPHA_JENSEN 326 select GENERIC_PCI_IOMAP 327 default y 328 help 329 Find out whether you have a PCI motherboard. PCI is the name of a 330 bus system, i.e. the way the CPU talks to the other stuff inside 331 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 332 VESA. If you have PCI, say Y, otherwise N. 333 334config PCI_DOMAINS 335 bool 336 default y 337 338config PCI_SYSCALL 339 def_bool PCI 340 341config IOMMU_HELPER 342 def_bool PCI 343 344config ALPHA_NONAME 345 bool 346 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 347 default y 348 help 349 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 350 UDB). This design was produced by Digital's Technical OEM (TOEM) 351 group. It uses the 21066 processor running at 166MHz or 233MHz. It 352 is a baby-AT size, and runs from a standard PC power supply. It has 353 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 354 2 versions, with either PS/2 or large DIN connectors for the 355 keyboard. 356 357config ALPHA_EV4 358 bool 359 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 360 default y if !ALPHA_LYNX 361 362config ALPHA_LCA 363 bool 364 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 365 default y 366 367config ALPHA_APECS 368 bool 369 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 370 default y 371 372config ALPHA_EB64P 373 bool 374 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 375 default y 376 help 377 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 378 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 379 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 380 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 381 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 382 Runs from standard PC power supply. 383 384config ALPHA_EV5 385 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 386 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 387 388config ALPHA_EV4 389 bool 390 default y if ALPHA_LYNX && !ALPHA_EV5 391 392config ALPHA_CIA 393 bool 394 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 395 default y 396 397config ALPHA_EV56 398 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 399 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 400 401config ALPHA_EV56 402 prompt "EV56 CPU (speed >= 333MHz)?" 403 depends on ALPHA_NORITAKE || ALPHA_PRIMO 404 405config ALPHA_EV56 406 prompt "EV56 CPU (speed >= 400MHz)?" 407 depends on ALPHA_RAWHIDE 408 409config ALPHA_PRIMO 410 bool "EV5 CPU daughtercard (model 5/xxx)?" 411 depends on ALPHA_NORITAKE || ALPHA_MIKASA 412 help 413 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 414 415config ALPHA_GAMMA 416 bool "EV5 CPU(s) (model 5/xxx)?" 417 depends on ALPHA_SABLE 418 help 419 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 420 421config ALPHA_GAMMA 422 bool 423 depends on ALPHA_LYNX 424 default y 425 426config ALPHA_T2 427 bool 428 depends on ALPHA_SABLE || ALPHA_LYNX 429 default y 430 431config ALPHA_PYXIS 432 bool 433 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 434 default y 435 436config ALPHA_EV6 437 bool 438 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 439 default y 440 441config ALPHA_TSUNAMI 442 bool 443 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 444 default y 445 446config ALPHA_EV67 447 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 448 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 449 help 450 Is this a machine based on the EV67 core? If in doubt, select N here 451 and the machine will be treated as an EV6. 452 453config ALPHA_MCPCIA 454 bool 455 depends on ALPHA_RAWHIDE 456 default y 457 458config ALPHA_POLARIS 459 bool 460 depends on ALPHA_RX164 461 default y 462 463config ALPHA_IRONGATE 464 bool 465 depends on ALPHA_NAUTILUS 466 default y 467 468config GENERIC_HWEIGHT 469 bool 470 default y if !ALPHA_EV67 471 472config ALPHA_AVANTI 473 bool 474 depends on ALPHA_XL || ALPHA_AVANTI_CH 475 default y 476 help 477 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 478 Alphas. Info at 479 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 480 481config ALPHA_BROKEN_IRQ_MASK 482 bool 483 depends on ALPHA_GENERIC || ALPHA_PC164 484 default y 485 486config VGA_HOSE 487 bool 488 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 489 default y 490 help 491 Support VGA on an arbitrary hose; needed for several platforms 492 which always have multiple hoses, and whose consoles support it. 493 494 495config ALPHA_QEMU 496 bool "Run under QEMU emulation" 497 depends on !ALPHA_GENERIC 498 ---help--- 499 Assume the presence of special features supported by QEMU PALcode 500 that reduce the overhead of system emulation. 501 502 Generic kernels will auto-detect QEMU. But when building a 503 system-specific kernel, the assumption is that we want to 504 elimiate as many runtime tests as possible. 505 506 If unsure, say N. 507 508 509config ALPHA_SRM 510 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 511 depends on TTY 512 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 513 ---help--- 514 There are two different types of booting firmware on Alphas: SRM, 515 which is command line driven, and ARC, which uses menus and arrow 516 keys. Details about the Linux/Alpha booting process are contained in 517 the Linux/Alpha FAQ, accessible on the WWW from 518 <http://www.alphalinux.org/>. 519 520 The usual way to load Linux on an Alpha machine is to use MILO 521 (a bootloader that lets you pass command line parameters to the 522 kernel just like lilo does for the x86 architecture) which can be 523 loaded either from ARC or can be installed directly as a permanent 524 firmware replacement from floppy (which requires changing a certain 525 jumper on the motherboard). If you want to do either of these, say N 526 here. If MILO doesn't work on your system (true for Jensen 527 motherboards), you can bypass it altogether and boot Linux directly 528 from an SRM console; say Y here in order to do that. Note that you 529 won't be able to boot from an IDE disk using SRM. 530 531 If unsure, say N. 532 533config EISA 534 bool 535 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE 536 default y 537 538config ARCH_MAY_HAVE_PC_FDC 539 def_bool y 540 541config SMP 542 bool "Symmetric multi-processing support" 543 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL 544 ---help--- 545 This enables support for systems with more than one CPU. If you have 546 a system with only one CPU, say N. If you have a system with more 547 than one CPU, say Y. 548 549 If you say N here, the kernel will run on uni- and multiprocessor 550 machines, but will use only one CPU of a multiprocessor machine. If 551 you say Y here, the kernel will run on many, but not all, 552 uniprocessor machines. On a uniprocessor machine, the kernel 553 will run faster if you say N here. 554 555 See also the SMP-HOWTO available at 556 <http://www.tldp.org/docs.html#howto>. 557 558 If you don't know what to do here, say N. 559 560config HAVE_DEC_LOCK 561 bool 562 depends on SMP 563 default y 564 565config NR_CPUS 566 int "Maximum number of CPUs (2-32)" 567 range 2 32 568 depends on SMP 569 default "32" if ALPHA_GENERIC || ALPHA_MARVEL 570 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL 571 help 572 MARVEL support can handle a maximum of 32 CPUs, all the others 573 with working support have a maximum of 4 CPUs. 574 575config ARCH_DISCONTIGMEM_ENABLE 576 bool "Discontiguous Memory Support" 577 help 578 Say Y to support efficient handling of discontiguous physical memory, 579 for architectures which are either NUMA (Non-Uniform Memory Access) 580 or have huge holes in the physical address space for other reasons. 581 See <file:Documentation/vm/numa> for more. 582 583source "mm/Kconfig" 584 585config NUMA 586 bool "NUMA Support (EXPERIMENTAL)" 587 depends on DISCONTIGMEM && BROKEN 588 help 589 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 590 Access). This option is for configuring high-end multiprocessor 591 server machines. If in doubt, say N. 592 593config ALPHA_WTINT 594 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC 595 default y if ALPHA_QEMU 596 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) 597 default n if !ALPHA_SRM && !ALPHA_GENERIC 598 default y if SMP 599 ---help--- 600 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU 601 to sleep until the next interrupt. This may reduce the power 602 consumed, and the heat produced by the computer. However, it has 603 the side effect of making the cycle counter unreliable as a timing 604 device across the sleep. 605 606 For emulation under QEMU, definitely say Y here, as we have other 607 mechanisms for measuring time than the cycle counter. 608 609 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running 610 MILO, sleep mode is not supported so you might as well say N here. 611 612 For SMP systems we cannot use the cycle counter for timing anyway, 613 so you might as well say Y here. 614 615 If unsure, say N. 616 617config NODES_SHIFT 618 int 619 default "7" 620 depends on NEED_MULTIPLE_NODES 621 622# LARGE_VMALLOC is racy, if you *really* need it then fix it first 623config ALPHA_LARGE_VMALLOC 624 bool 625 ---help--- 626 Process creation and other aspects of virtual memory management can 627 be streamlined if we restrict the kernel to one PGD for all vmalloc 628 allocations. This equates to about 8GB. 629 630 Under normal circumstances, this is so far and above what is needed 631 as to be laughable. However, there are certain applications (such 632 as benchmark-grade in-kernel web serving) that can make use of as 633 much vmalloc space as is available. 634 635 Say N unless you know you need gobs and gobs of vmalloc space. 636 637config VERBOSE_MCHECK 638 bool "Verbose Machine Checks" 639 640config VERBOSE_MCHECK_ON 641 int "Verbose Printing Mode (0=off, 1=on, 2=all)" 642 depends on VERBOSE_MCHECK 643 default 1 644 ---help--- 645 This option allows the default printing mode to be set, and then 646 possibly overridden by a boot command argument. 647 648 For example, if one wanted the option of printing verbose 649 machine checks, but wanted the default to be as if verbose 650 machine check printing was turned off, then one would choose 651 the printing mode to be 0. Then, upon reboot, one could add 652 the boot command line "verbose_mcheck=1" to get the normal 653 verbose machine check printing, or "verbose_mcheck=2" to get 654 the maximum information available. 655 656 Take the default (1) unless you want more control or more info. 657 658choice 659 prompt "Timer interrupt frequency (HZ)?" 660 default HZ_128 if ALPHA_QEMU 661 default HZ_1200 if ALPHA_RAWHIDE 662 default HZ_1024 663 ---help--- 664 The frequency at which timer interrupts occur. A high frequency 665 minimizes latency, whereas a low frequency minimizes overhead of 666 process accounting. The later effect is especially significant 667 when being run under QEMU. 668 669 Note that some Alpha hardware cannot change the interrupt frequency 670 of the timer. If unsure, say 1024 (or 1200 for Rawhide). 671 672 config HZ_32 673 bool "32 Hz" 674 config HZ_64 675 bool "64 Hz" 676 config HZ_128 677 bool "128 Hz" 678 config HZ_256 679 bool "256 Hz" 680 config HZ_1024 681 bool "1024 Hz" 682 config HZ_1200 683 bool "1200 Hz" 684endchoice 685 686config HZ 687 int 688 default 32 if HZ_32 689 default 64 if HZ_64 690 default 128 if HZ_128 691 default 256 if HZ_256 692 default 1200 if HZ_1200 693 default 1024 694 695source "drivers/pci/Kconfig" 696source "drivers/eisa/Kconfig" 697 698source "drivers/pcmcia/Kconfig" 699 700config SRM_ENV 701 tristate "SRM environment through procfs" 702 depends on PROC_FS 703 ---help--- 704 If you enable this option, a subdirectory inside /proc called 705 /proc/srm_environment will give you access to the all important 706 SRM environment variables (those which have a name) and also 707 to all others (by their internal number). 708 709 SRM is something like a BIOS for Alpha machines. There are some 710 other such BIOSes, like AlphaBIOS, which this driver cannot 711 support (hey, that's not SRM!). 712 713 Despite the fact that this driver doesn't work on all Alphas (but 714 only on those which have SRM as their firmware), it's save to 715 build it even if your particular machine doesn't know about SRM 716 (or if you intend to compile a generic kernel). It will simply 717 not create those subdirectory in /proc (and give you some warning, 718 of course). 719 720 This driver is also available as a module and will be called 721 srm_env then. 722 723source "fs/Kconfig.binfmt" 724 725endmenu 726 727source "net/Kconfig" 728 729source "drivers/Kconfig" 730 731source "fs/Kconfig" 732 733source "arch/alpha/Kconfig.debug" 734 735# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig 736# but we also need it if VGA_HOSE is set 737config DUMMY_CONSOLE 738 bool 739 depends on VGA_HOSE 740 default y 741 742source "security/Kconfig" 743 744source "crypto/Kconfig" 745 746source "lib/Kconfig" 747 748