1config ALPHA 2 bool 3 default y 4 select ARCH_MIGHT_HAVE_PC_PARPORT 5 select ARCH_MIGHT_HAVE_PC_SERIO 6 select ARCH_USE_CMPXCHG_LOCKREF 7 select HAVE_AOUT 8 select HAVE_IDE 9 select HAVE_OPROFILE 10 select HAVE_PCSPKR_PLATFORM 11 select HAVE_PERF_EVENTS 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_IPC_PARSE_VERSION 17 select ARCH_HAVE_NMI_SAFE_CMPXCHG 18 select AUDIT_ARCH 19 select GENERIC_CLOCKEVENTS 20 select GENERIC_SMP_IDLE_THREAD 21 select GENERIC_STRNCPY_FROM_USER 22 select GENERIC_STRNLEN_USER 23 select HAVE_ARCH_AUDITSYSCALL 24 select HAVE_MOD_ARCH_SPECIFIC 25 select MODULES_USE_ELF_RELA 26 select ODD_RT_SIGACTION 27 select OLD_SIGSUSPEND 28 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67 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 78config PGTABLE_LEVELS 79 int 80 default 3 81 82source "init/Kconfig" 83source "kernel/Kconfig.freezer" 84 85config AUDIT_ARCH 86 bool 87 88menu "System setup" 89 90choice 91 prompt "Alpha system type" 92 default ALPHA_GENERIC 93 ---help--- 94 This is the system type of your hardware. A "generic" kernel will 95 run on any supported Alpha system. However, if you configure a 96 kernel for your specific system, it will be faster and smaller. 97 98 To find out what type of Alpha system you have, you may want to 99 check out the Linux/Alpha FAQ, accessible on the WWW from 100 <http://www.alphalinux.org/>. In summary: 101 102 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 103 Alpha-XL XL-233, XL-266 104 AlphaBook1 Alpha laptop 105 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 106 Cabriolet AlphaPC64, AlphaPCI64 107 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 108 EB164 EB164 21164 evaluation board 109 EB64+ EB64+ 21064 evaluation board 110 EB66 EB66 21066 evaluation board 111 EB66+ EB66+ 21066 evaluation board 112 Jensen DECpc 150, DEC 2000 models 300, 500 113 LX164 AlphaPC164-LX 114 Lynx AS 2100A 115 Miata Personal Workstation 433/500/600 a/au 116 Marvel AlphaServer ES47 / ES80 / GS1280 117 Mikasa AS 1000 118 Noname AXPpci33, UDB (Multia) 119 Noritake AS 1000A, AS 600A, AS 800 120 PC164 AlphaPC164 121 Rawhide AS 1200, AS 4000, AS 4100 122 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 123 SX164 AlphaPC164-SX 124 Sable AS 2000, AS 2100 125 Shark DS 20L 126 Takara Takara (OEM) 127 Titan AlphaServer ES45 / DS25 / DS15 128 Wildfire AlphaServer GS 40/80/160/320 129 130 If you don't know what to do, choose "generic". 131 132config ALPHA_GENERIC 133 bool "Generic" 134 depends on TTY 135 help 136 A generic kernel will run on all supported Alpha hardware. 137 138config ALPHA_ALCOR 139 bool "Alcor/Alpha-XLT" 140 help 141 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 142 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 143 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 144 controller (256-bit memory bus) and a PCI interface. It also does 145 all the work required to support an external Bcache and to maintain 146 memory coherence when a PCI device DMAs into (or out of) memory. 147 148config ALPHA_XL 149 bool "Alpha-XL" 150 help 151 XL-233 and XL-266-based Alpha systems. 152 153config ALPHA_BOOK1 154 bool "AlphaBook1" 155 help 156 Dec AlphaBook1/Burns Alpha-based laptops. 157 158config ALPHA_AVANTI_CH 159 bool "Avanti" 160 161config ALPHA_CABRIOLET 162 bool "Cabriolet" 163 help 164 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 165 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 166 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 167 Bcache SIMMs. Requires power supply with 3.3V output. 168 169config ALPHA_DP264 170 bool "DP264" 171 help 172 Various 21264 systems with the tsunami core logic chipset. 173 API Networks: 264DP, UP2000(+), CS20; 174 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 175 176config ALPHA_EB164 177 bool "EB164" 178 help 179 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 180 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 181 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 182 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 183 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 184 motherboard. Requires power supply with 3.3V output. 185 186config ALPHA_EB64P_CH 187 bool "EB64+" 188 189config ALPHA_EB66 190 bool "EB66" 191 help 192 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 193 identical to EB64+. Baby PC-AT size. Runs from standard PC power 194 supply. The EB66 schematic was published as a marketing poster 195 advertising the 21066 as "the first microprocessor in the world with 196 embedded PCI". 197 198config ALPHA_EB66P 199 bool "EB66+" 200 help 201 Later variant of the EB66 board. 202 203config ALPHA_EIGER 204 bool "Eiger" 205 help 206 Apparently an obscure OEM single-board computer based on the 207 Typhoon/Tsunami chipset family. Information on it is scanty. 208 209config ALPHA_JENSEN 210 bool "Jensen" 211 help 212 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one 213 of the first-generation Alpha systems. A number of these systems 214 seem to be available on the second- hand market. The Jensen is a 215 floor-standing tower system which originally used a 150MHz 21064 It 216 used programmable logic to interface a 486 EISA I/O bridge to the 217 CPU. 218 219config ALPHA_LX164 220 bool "LX164" 221 help 222 A technical overview of this board is available at 223 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. 224 225config ALPHA_LYNX 226 bool "Lynx" 227 help 228 AlphaServer 2100A-based systems. 229 230config ALPHA_MARVEL 231 bool "Marvel" 232 help 233 AlphaServer ES47 / ES80 / GS1280 based on EV7. 234 235config ALPHA_MIATA 236 bool "Miata" 237 help 238 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, 239 or 600au). 240 241config ALPHA_MIKASA 242 bool "Mikasa" 243 help 244 AlphaServer 1000-based Alpha systems. 245 246config ALPHA_NAUTILUS 247 bool "Nautilus" 248 help 249 Alpha systems based on the AMD 751 & ALI 1543C chipsets. 250 251config ALPHA_NONAME_CH 252 bool "Noname" 253 254config ALPHA_NORITAKE 255 bool "Noritake" 256 help 257 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based 258 systems. 259 260config ALPHA_PC164 261 bool "PC164" 262 263config ALPHA_P2K 264 bool "Platform2000" 265 266config ALPHA_RAWHIDE 267 bool "Rawhide" 268 help 269 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. 270 See HOWTO at 271 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. 272 273config ALPHA_RUFFIAN 274 bool "Ruffian" 275 help 276 Samsung APC164UX. There is a page on known problems and workarounds 277 at <http://www.alphalinux.org/faq/FAQ-11.html>. 278 279config ALPHA_RX164 280 bool "RX164" 281 282config ALPHA_SX164 283 bool "SX164" 284 285config ALPHA_SABLE 286 bool "Sable" 287 help 288 Digital AlphaServer 2000 and 2100-based systems. 289 290config ALPHA_SHARK 291 bool "Shark" 292 293config ALPHA_TAKARA 294 bool "Takara" 295 help 296 Alpha 11164-based OEM single-board computer. 297 298config ALPHA_TITAN 299 bool "Titan" 300 help 301 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. 302 303config ALPHA_WILDFIRE 304 bool "Wildfire" 305 help 306 AlphaServer GS 40/80/160/320 SMP based on the EV67 core. 307 308endchoice 309 310# clear all implied options (don't want default values for those): 311# Most of these machines have ISA slots; not exactly sure which don't, 312# and this doesn't activate hordes of code, so do it always. 313config ISA 314 bool 315 default y 316 help 317 Find out whether you have ISA slots on your motherboard. ISA is the 318 name of a bus system, i.e. the way the CPU talks to the other stuff 319 inside your box. Other bus systems are PCI, EISA, MicroChannel 320 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 321 newer boards don't support it. If you have ISA, say Y, otherwise N. 322 323config ISA_DMA_API 324 bool 325 default y 326 327config PCI 328 bool 329 depends on !ALPHA_JENSEN 330 select GENERIC_PCI_IOMAP 331 default y 332 help 333 Find out whether you have a PCI motherboard. PCI is the name of a 334 bus system, i.e. the way the CPU talks to the other stuff inside 335 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 336 VESA. If you have PCI, say Y, otherwise N. 337 338config PCI_DOMAINS 339 bool 340 default y 341 342config PCI_SYSCALL 343 def_bool PCI 344 345config IOMMU_HELPER 346 def_bool PCI 347 348config ALPHA_NONAME 349 bool 350 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 351 default y 352 help 353 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 354 UDB). This design was produced by Digital's Technical OEM (TOEM) 355 group. It uses the 21066 processor running at 166MHz or 233MHz. It 356 is a baby-AT size, and runs from a standard PC power supply. It has 357 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 358 2 versions, with either PS/2 or large DIN connectors for the 359 keyboard. 360 361config ALPHA_EV4 362 bool 363 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 364 default y if !ALPHA_LYNX 365 366config ALPHA_LCA 367 bool 368 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 369 default y 370 371config ALPHA_APECS 372 bool 373 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 374 default y 375 376config ALPHA_EB64P 377 bool 378 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 379 default y 380 help 381 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 382 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 383 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 384 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 385 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 386 Runs from standard PC power supply. 387 388config ALPHA_EV5 389 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 390 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 391 392config ALPHA_EV4 393 bool 394 default y if ALPHA_LYNX && !ALPHA_EV5 395 396config ALPHA_CIA 397 bool 398 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 399 default y 400 401config ALPHA_EV56 402 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 403 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 404 405config ALPHA_EV56 406 prompt "EV56 CPU (speed >= 333MHz)?" 407 depends on ALPHA_NORITAKE || ALPHA_PRIMO 408 409config ALPHA_EV56 410 prompt "EV56 CPU (speed >= 400MHz)?" 411 depends on ALPHA_RAWHIDE 412 413config ALPHA_PRIMO 414 bool "EV5 CPU daughtercard (model 5/xxx)?" 415 depends on ALPHA_NORITAKE || ALPHA_MIKASA 416 help 417 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 418 419config ALPHA_GAMMA 420 bool "EV5 CPU(s) (model 5/xxx)?" 421 depends on ALPHA_SABLE 422 help 423 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 424 425config ALPHA_GAMMA 426 bool 427 depends on ALPHA_LYNX 428 default y 429 430config ALPHA_T2 431 bool 432 depends on ALPHA_SABLE || ALPHA_LYNX 433 default y 434 435config ALPHA_PYXIS 436 bool 437 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 438 default y 439 440config ALPHA_EV6 441 bool 442 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 443 default y 444 445config ALPHA_TSUNAMI 446 bool 447 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 448 default y 449 450config ALPHA_EV67 451 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 452 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 453 help 454 Is this a machine based on the EV67 core? If in doubt, select N here 455 and the machine will be treated as an EV6. 456 457config ALPHA_MCPCIA 458 bool 459 depends on ALPHA_RAWHIDE 460 default y 461 462config ALPHA_POLARIS 463 bool 464 depends on ALPHA_RX164 465 default y 466 467config ALPHA_IRONGATE 468 bool 469 depends on ALPHA_NAUTILUS 470 default y 471 472config GENERIC_HWEIGHT 473 bool 474 default y if !ALPHA_EV67 475 476config ALPHA_AVANTI 477 bool 478 depends on ALPHA_XL || ALPHA_AVANTI_CH 479 default y 480 help 481 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 482 Alphas. Info at 483 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 484 485config ALPHA_BROKEN_IRQ_MASK 486 bool 487 depends on ALPHA_GENERIC || ALPHA_PC164 488 default y 489 490config VGA_HOSE 491 bool 492 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 493 default y 494 help 495 Support VGA on an arbitrary hose; needed for several platforms 496 which always have multiple hoses, and whose consoles support it. 497 498 499config ALPHA_QEMU 500 bool "Run under QEMU emulation" 501 depends on !ALPHA_GENERIC 502 ---help--- 503 Assume the presence of special features supported by QEMU PALcode 504 that reduce the overhead of system emulation. 505 506 Generic kernels will auto-detect QEMU. But when building a 507 system-specific kernel, the assumption is that we want to 508 elimiate as many runtime tests as possible. 509 510 If unsure, say N. 511 512 513config ALPHA_SRM 514 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 515 depends on TTY 516 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 517 ---help--- 518 There are two different types of booting firmware on Alphas: SRM, 519 which is command line driven, and ARC, which uses menus and arrow 520 keys. Details about the Linux/Alpha booting process are contained in 521 the Linux/Alpha FAQ, accessible on the WWW from 522 <http://www.alphalinux.org/>. 523 524 The usual way to load Linux on an Alpha machine is to use MILO 525 (a bootloader that lets you pass command line parameters to the 526 kernel just like lilo does for the x86 architecture) which can be 527 loaded either from ARC or can be installed directly as a permanent 528 firmware replacement from floppy (which requires changing a certain 529 jumper on the motherboard). If you want to do either of these, say N 530 here. If MILO doesn't work on your system (true for Jensen 531 motherboards), you can bypass it altogether and boot Linux directly 532 from an SRM console; say Y here in order to do that. Note that you 533 won't be able to boot from an IDE disk using SRM. 534 535 If unsure, say N. 536 537config EISA 538 bool 539 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE 540 default y 541 542config ARCH_MAY_HAVE_PC_FDC 543 def_bool y 544 545config SMP 546 bool "Symmetric multi-processing support" 547 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL 548 ---help--- 549 This enables support for systems with more than one CPU. If you have 550 a system with only one CPU, say N. If you have a system with more 551 than one CPU, say Y. 552 553 If you say N here, the kernel will run on uni- and multiprocessor 554 machines, but will use only one CPU of a multiprocessor machine. If 555 you say Y here, the kernel will run on many, but not all, 556 uniprocessor machines. On a uniprocessor machine, the kernel 557 will run faster if you say N here. 558 559 See also the SMP-HOWTO available at 560 <http://www.tldp.org/docs.html#howto>. 561 562 If you don't know what to do here, say N. 563 564config HAVE_DEC_LOCK 565 bool 566 depends on SMP 567 default y 568 569config NR_CPUS 570 int "Maximum number of CPUs (2-32)" 571 range 2 32 572 depends on SMP 573 default "32" if ALPHA_GENERIC || ALPHA_MARVEL 574 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL 575 help 576 MARVEL support can handle a maximum of 32 CPUs, all the others 577 with working support have a maximum of 4 CPUs. 578 579config ARCH_DISCONTIGMEM_ENABLE 580 bool "Discontiguous Memory Support" 581 help 582 Say Y to support efficient handling of discontiguous physical memory, 583 for architectures which are either NUMA (Non-Uniform Memory Access) 584 or have huge holes in the physical address space for other reasons. 585 See <file:Documentation/vm/numa> for more. 586 587source "mm/Kconfig" 588 589config NUMA 590 bool "NUMA Support (EXPERIMENTAL)" 591 depends on DISCONTIGMEM && BROKEN 592 help 593 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 594 Access). This option is for configuring high-end multiprocessor 595 server machines. If in doubt, say N. 596 597config ALPHA_WTINT 598 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC 599 default y if ALPHA_QEMU 600 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) 601 default n if !ALPHA_SRM && !ALPHA_GENERIC 602 default y if SMP 603 ---help--- 604 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU 605 to sleep until the next interrupt. This may reduce the power 606 consumed, and the heat produced by the computer. However, it has 607 the side effect of making the cycle counter unreliable as a timing 608 device across the sleep. 609 610 For emulation under QEMU, definitely say Y here, as we have other 611 mechanisms for measuring time than the cycle counter. 612 613 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running 614 MILO, sleep mode is not supported so you might as well say N here. 615 616 For SMP systems we cannot use the cycle counter for timing anyway, 617 so you might as well say Y here. 618 619 If unsure, say N. 620 621config NODES_SHIFT 622 int 623 default "7" 624 depends on NEED_MULTIPLE_NODES 625 626# LARGE_VMALLOC is racy, if you *really* need it then fix it first 627config ALPHA_LARGE_VMALLOC 628 bool 629 ---help--- 630 Process creation and other aspects of virtual memory management can 631 be streamlined if we restrict the kernel to one PGD for all vmalloc 632 allocations. This equates to about 8GB. 633 634 Under normal circumstances, this is so far and above what is needed 635 as to be laughable. However, there are certain applications (such 636 as benchmark-grade in-kernel web serving) that can make use of as 637 much vmalloc space as is available. 638 639 Say N unless you know you need gobs and gobs of vmalloc space. 640 641config VERBOSE_MCHECK 642 bool "Verbose Machine Checks" 643 644config VERBOSE_MCHECK_ON 645 int "Verbose Printing Mode (0=off, 1=on, 2=all)" 646 depends on VERBOSE_MCHECK 647 default 1 648 ---help--- 649 This option allows the default printing mode to be set, and then 650 possibly overridden by a boot command argument. 651 652 For example, if one wanted the option of printing verbose 653 machine checks, but wanted the default to be as if verbose 654 machine check printing was turned off, then one would choose 655 the printing mode to be 0. Then, upon reboot, one could add 656 the boot command line "verbose_mcheck=1" to get the normal 657 verbose machine check printing, or "verbose_mcheck=2" to get 658 the maximum information available. 659 660 Take the default (1) unless you want more control or more info. 661 662choice 663 prompt "Timer interrupt frequency (HZ)?" 664 default HZ_128 if ALPHA_QEMU 665 default HZ_1200 if ALPHA_RAWHIDE 666 default HZ_1024 667 ---help--- 668 The frequency at which timer interrupts occur. A high frequency 669 minimizes latency, whereas a low frequency minimizes overhead of 670 process accounting. The later effect is especially significant 671 when being run under QEMU. 672 673 Note that some Alpha hardware cannot change the interrupt frequency 674 of the timer. If unsure, say 1024 (or 1200 for Rawhide). 675 676 config HZ_32 677 bool "32 Hz" 678 config HZ_64 679 bool "64 Hz" 680 config HZ_128 681 bool "128 Hz" 682 config HZ_256 683 bool "256 Hz" 684 config HZ_1024 685 bool "1024 Hz" 686 config HZ_1200 687 bool "1200 Hz" 688endchoice 689 690config HZ 691 int 692 default 32 if HZ_32 693 default 64 if HZ_64 694 default 128 if HZ_128 695 default 256 if HZ_256 696 default 1200 if HZ_1200 697 default 1024 698 699source "drivers/pci/Kconfig" 700source "drivers/eisa/Kconfig" 701 702source "drivers/pcmcia/Kconfig" 703 704config SRM_ENV 705 tristate "SRM environment through procfs" 706 depends on PROC_FS 707 ---help--- 708 If you enable this option, a subdirectory inside /proc called 709 /proc/srm_environment will give you access to the all important 710 SRM environment variables (those which have a name) and also 711 to all others (by their internal number). 712 713 SRM is something like a BIOS for Alpha machines. There are some 714 other such BIOSes, like AlphaBIOS, which this driver cannot 715 support (hey, that's not SRM!). 716 717 Despite the fact that this driver doesn't work on all Alphas (but 718 only on those which have SRM as their firmware), it's save to 719 build it even if your particular machine doesn't know about SRM 720 (or if you intend to compile a generic kernel). It will simply 721 not create those subdirectory in /proc (and give you some warning, 722 of course). 723 724 This driver is also available as a module and will be called 725 srm_env then. 726 727source "fs/Kconfig.binfmt" 728 729endmenu 730 731source "net/Kconfig" 732 733source "drivers/Kconfig" 734 735source "fs/Kconfig" 736 737source "arch/alpha/Kconfig.debug" 738 739# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig 740# but we also need it if VGA_HOSE is set 741config DUMMY_CONSOLE 742 bool 743 depends on VGA_HOSE 744 default y 745 746source "security/Kconfig" 747 748source "crypto/Kconfig" 749 750source "lib/Kconfig" 751 752