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_ARCH_AUDITSYSCALL 26 select HAVE_MOD_ARCH_SPECIFIC 27 select MODULES_USE_ELF_RELA 28 select ODD_RT_SIGACTION 29 select OLD_SIGSUSPEND 30 help 31 The Alpha is a 64-bit general-purpose processor designed and 32 marketed by the Digital Equipment Corporation of blessed memory, 33 now Hewlett-Packard. The Alpha Linux project has a home page at 34 <http://www.alphalinux.org/>. 35 36config 64BIT 37 def_bool y 38 39config MMU 40 bool 41 default y 42 43config RWSEM_GENERIC_SPINLOCK 44 bool 45 46config RWSEM_XCHGADD_ALGORITHM 47 bool 48 default y 49 50config ARCH_HAS_ILOG2_U32 51 bool 52 default n 53 54config ARCH_HAS_ILOG2_U64 55 bool 56 default n 57 58config GENERIC_CALIBRATE_DELAY 59 bool 60 default y 61 62config ZONE_DMA 63 bool 64 default y 65 66config ARCH_DMA_ADDR_T_64BIT 67 def_bool y 68 69config NEED_DMA_MAP_STATE 70 def_bool y 71 72config NEED_SG_DMA_LENGTH 73 def_bool y 74 75config GENERIC_ISA_DMA 76 bool 77 default y 78 79source "init/Kconfig" 80source "kernel/Kconfig.freezer" 81 82config AUDIT_ARCH 83 bool 84 85menu "System setup" 86 87choice 88 prompt "Alpha system type" 89 default ALPHA_GENERIC 90 ---help--- 91 This is the system type of your hardware. A "generic" kernel will 92 run on any supported Alpha system. However, if you configure a 93 kernel for your specific system, it will be faster and smaller. 94 95 To find out what type of Alpha system you have, you may want to 96 check out the Linux/Alpha FAQ, accessible on the WWW from 97 <http://www.alphalinux.org/>. In summary: 98 99 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 100 Alpha-XL XL-233, XL-266 101 AlphaBook1 Alpha laptop 102 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 103 Cabriolet AlphaPC64, AlphaPCI64 104 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 105 EB164 EB164 21164 evaluation board 106 EB64+ EB64+ 21064 evaluation board 107 EB66 EB66 21066 evaluation board 108 EB66+ EB66+ 21066 evaluation board 109 Jensen DECpc 150, DEC 2000 models 300, 500 110 LX164 AlphaPC164-LX 111 Lynx AS 2100A 112 Miata Personal Workstation 433/500/600 a/au 113 Marvel AlphaServer ES47 / ES80 / GS1280 114 Mikasa AS 1000 115 Noname AXPpci33, UDB (Multia) 116 Noritake AS 1000A, AS 600A, AS 800 117 PC164 AlphaPC164 118 Rawhide AS 1200, AS 4000, AS 4100 119 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 120 SX164 AlphaPC164-SX 121 Sable AS 2000, AS 2100 122 Shark DS 20L 123 Takara Takara (OEM) 124 Titan AlphaServer ES45 / DS25 / DS15 125 Wildfire AlphaServer GS 40/80/160/320 126 127 If you don't know what to do, choose "generic". 128 129config ALPHA_GENERIC 130 bool "Generic" 131 depends on TTY 132 help 133 A generic kernel will run on all supported Alpha hardware. 134 135config ALPHA_ALCOR 136 bool "Alcor/Alpha-XLT" 137 help 138 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 139 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 140 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 141 controller (256-bit memory bus) and a PCI interface. It also does 142 all the work required to support an external Bcache and to maintain 143 memory coherence when a PCI device DMAs into (or out of) memory. 144 145config ALPHA_XL 146 bool "Alpha-XL" 147 help 148 XL-233 and XL-266-based Alpha systems. 149 150config ALPHA_BOOK1 151 bool "AlphaBook1" 152 help 153 Dec AlphaBook1/Burns Alpha-based laptops. 154 155config ALPHA_AVANTI_CH 156 bool "Avanti" 157 158config ALPHA_CABRIOLET 159 bool "Cabriolet" 160 help 161 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 162 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 163 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 164 Bcache SIMMs. Requires power supply with 3.3V output. 165 166config ALPHA_DP264 167 bool "DP264" 168 help 169 Various 21264 systems with the tsunami core logic chipset. 170 API Networks: 264DP, UP2000(+), CS20; 171 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 172 173config ALPHA_EB164 174 bool "EB164" 175 help 176 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 177 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 178 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 179 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 180 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 181 motherboard. Requires power supply with 3.3V output. 182 183config ALPHA_EB64P_CH 184 bool "EB64+" 185 186config ALPHA_EB66 187 bool "EB66" 188 help 189 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 190 identical to EB64+. Baby PC-AT size. Runs from standard PC power 191 supply. The EB66 schematic was published as a marketing poster 192 advertising the 21066 as "the first microprocessor in the world with 193 embedded PCI". 194 195config ALPHA_EB66P 196 bool "EB66+" 197 help 198 Later variant of the EB66 board. 199 200config ALPHA_EIGER 201 bool "Eiger" 202 help 203 Apparently an obscure OEM single-board computer based on the 204 Typhoon/Tsunami chipset family. Information on it is scanty. 205 206config ALPHA_JENSEN 207 bool "Jensen" 208 help 209 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one 210 of the first-generation Alpha systems. A number of these systems 211 seem to be available on the second- hand market. The Jensen is a 212 floor-standing tower system which originally used a 150MHz 21064 It 213 used programmable logic to interface a 486 EISA I/O bridge to the 214 CPU. 215 216config ALPHA_LX164 217 bool "LX164" 218 help 219 A technical overview of this board is available at 220 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. 221 222config ALPHA_LYNX 223 bool "Lynx" 224 help 225 AlphaServer 2100A-based systems. 226 227config ALPHA_MARVEL 228 bool "Marvel" 229 help 230 AlphaServer ES47 / ES80 / GS1280 based on EV7. 231 232config ALPHA_MIATA 233 bool "Miata" 234 help 235 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, 236 or 600au). 237 238config ALPHA_MIKASA 239 bool "Mikasa" 240 help 241 AlphaServer 1000-based Alpha systems. 242 243config ALPHA_NAUTILUS 244 bool "Nautilus" 245 help 246 Alpha systems based on the AMD 751 & ALI 1543C chipsets. 247 248config ALPHA_NONAME_CH 249 bool "Noname" 250 251config ALPHA_NORITAKE 252 bool "Noritake" 253 help 254 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based 255 systems. 256 257config ALPHA_PC164 258 bool "PC164" 259 260config ALPHA_P2K 261 bool "Platform2000" 262 263config ALPHA_RAWHIDE 264 bool "Rawhide" 265 help 266 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. 267 See HOWTO at 268 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. 269 270config ALPHA_RUFFIAN 271 bool "Ruffian" 272 help 273 Samsung APC164UX. There is a page on known problems and workarounds 274 at <http://www.alphalinux.org/faq/FAQ-11.html>. 275 276config ALPHA_RX164 277 bool "RX164" 278 279config ALPHA_SX164 280 bool "SX164" 281 282config ALPHA_SABLE 283 bool "Sable" 284 help 285 Digital AlphaServer 2000 and 2100-based systems. 286 287config ALPHA_SHARK 288 bool "Shark" 289 290config ALPHA_TAKARA 291 bool "Takara" 292 help 293 Alpha 11164-based OEM single-board computer. 294 295config ALPHA_TITAN 296 bool "Titan" 297 help 298 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. 299 300config ALPHA_WILDFIRE 301 bool "Wildfire" 302 help 303 AlphaServer GS 40/80/160/320 SMP based on the EV67 core. 304 305endchoice 306 307# clear all implied options (don't want default values for those): 308# Most of these machines have ISA slots; not exactly sure which don't, 309# and this doesn't activate hordes of code, so do it always. 310config ISA 311 bool 312 default y 313 help 314 Find out whether you have ISA slots on your motherboard. ISA is the 315 name of a bus system, i.e. the way the CPU talks to the other stuff 316 inside your box. Other bus systems are PCI, EISA, MicroChannel 317 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 318 newer boards don't support it. If you have ISA, say Y, otherwise N. 319 320config ISA_DMA_API 321 bool 322 default y 323 324config PCI 325 bool 326 depends on !ALPHA_JENSEN 327 select GENERIC_PCI_IOMAP 328 default y 329 help 330 Find out whether you have a PCI motherboard. PCI is the name of a 331 bus system, i.e. the way the CPU talks to the other stuff inside 332 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 333 VESA. If you have PCI, say Y, otherwise N. 334 335config PCI_DOMAINS 336 bool 337 default y 338 339config PCI_SYSCALL 340 def_bool PCI 341 342config IOMMU_HELPER 343 def_bool PCI 344 345config ALPHA_NONAME 346 bool 347 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 348 default y 349 help 350 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 351 UDB). This design was produced by Digital's Technical OEM (TOEM) 352 group. It uses the 21066 processor running at 166MHz or 233MHz. It 353 is a baby-AT size, and runs from a standard PC power supply. It has 354 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 355 2 versions, with either PS/2 or large DIN connectors for the 356 keyboard. 357 358config ALPHA_EV4 359 bool 360 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 361 default y if !ALPHA_LYNX 362 363config ALPHA_LCA 364 bool 365 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 366 default y 367 368config ALPHA_APECS 369 bool 370 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 371 default y 372 373config ALPHA_EB64P 374 bool 375 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 376 default y 377 help 378 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 379 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 380 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 381 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 382 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 383 Runs from standard PC power supply. 384 385config ALPHA_EV5 386 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 387 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 388 389config ALPHA_EV4 390 bool 391 default y if ALPHA_LYNX && !ALPHA_EV5 392 393config ALPHA_CIA 394 bool 395 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 396 default y 397 398config ALPHA_EV56 399 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 400 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 401 402config ALPHA_EV56 403 prompt "EV56 CPU (speed >= 333MHz)?" 404 depends on ALPHA_NORITAKE || ALPHA_PRIMO 405 406config ALPHA_EV56 407 prompt "EV56 CPU (speed >= 400MHz)?" 408 depends on ALPHA_RAWHIDE 409 410config ALPHA_PRIMO 411 bool "EV5 CPU daughtercard (model 5/xxx)?" 412 depends on ALPHA_NORITAKE || ALPHA_MIKASA 413 help 414 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 415 416config ALPHA_GAMMA 417 bool "EV5 CPU(s) (model 5/xxx)?" 418 depends on ALPHA_SABLE 419 help 420 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 421 422config ALPHA_GAMMA 423 bool 424 depends on ALPHA_LYNX 425 default y 426 427config ALPHA_T2 428 bool 429 depends on ALPHA_SABLE || ALPHA_LYNX 430 default y 431 432config ALPHA_PYXIS 433 bool 434 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 435 default y 436 437config ALPHA_EV6 438 bool 439 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 440 default y 441 442config ALPHA_TSUNAMI 443 bool 444 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 445 default y 446 447config ALPHA_EV67 448 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 449 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 450 help 451 Is this a machine based on the EV67 core? If in doubt, select N here 452 and the machine will be treated as an EV6. 453 454config ALPHA_MCPCIA 455 bool 456 depends on ALPHA_RAWHIDE 457 default y 458 459config ALPHA_POLARIS 460 bool 461 depends on ALPHA_RX164 462 default y 463 464config ALPHA_IRONGATE 465 bool 466 depends on ALPHA_NAUTILUS 467 default y 468 469config GENERIC_HWEIGHT 470 bool 471 default y if !ALPHA_EV67 472 473config ALPHA_AVANTI 474 bool 475 depends on ALPHA_XL || ALPHA_AVANTI_CH 476 default y 477 help 478 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 479 Alphas. Info at 480 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 481 482config ALPHA_BROKEN_IRQ_MASK 483 bool 484 depends on ALPHA_GENERIC || ALPHA_PC164 485 default y 486 487config VGA_HOSE 488 bool 489 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 490 default y 491 help 492 Support VGA on an arbitrary hose; needed for several platforms 493 which always have multiple hoses, and whose consoles support it. 494 495 496config ALPHA_QEMU 497 bool "Run under QEMU emulation" 498 depends on !ALPHA_GENERIC 499 ---help--- 500 Assume the presence of special features supported by QEMU PALcode 501 that reduce the overhead of system emulation. 502 503 Generic kernels will auto-detect QEMU. But when building a 504 system-specific kernel, the assumption is that we want to 505 elimiate as many runtime tests as possible. 506 507 If unsure, say N. 508 509 510config ALPHA_SRM 511 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 512 depends on TTY 513 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 514 ---help--- 515 There are two different types of booting firmware on Alphas: SRM, 516 which is command line driven, and ARC, which uses menus and arrow 517 keys. Details about the Linux/Alpha booting process are contained in 518 the Linux/Alpha FAQ, accessible on the WWW from 519 <http://www.alphalinux.org/>. 520 521 The usual way to load Linux on an Alpha machine is to use MILO 522 (a bootloader that lets you pass command line parameters to the 523 kernel just like lilo does for the x86 architecture) which can be 524 loaded either from ARC or can be installed directly as a permanent 525 firmware replacement from floppy (which requires changing a certain 526 jumper on the motherboard). If you want to do either of these, say N 527 here. If MILO doesn't work on your system (true for Jensen 528 motherboards), you can bypass it altogether and boot Linux directly 529 from an SRM console; say Y here in order to do that. Note that you 530 won't be able to boot from an IDE disk using SRM. 531 532 If unsure, say N. 533 534config EISA 535 bool 536 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE 537 default y 538 539config ARCH_MAY_HAVE_PC_FDC 540 def_bool y 541 542config SMP 543 bool "Symmetric multi-processing support" 544 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL 545 ---help--- 546 This enables support for systems with more than one CPU. If you have 547 a system with only one CPU, say N. If you have a system with more 548 than one CPU, say Y. 549 550 If you say N here, the kernel will run on uni- and multiprocessor 551 machines, but will use only one CPU of a multiprocessor machine. If 552 you say Y here, the kernel will run on many, but not all, 553 uniprocessor machines. On a uniprocessor machine, the kernel 554 will run faster if you say N here. 555 556 See also the SMP-HOWTO available at 557 <http://www.tldp.org/docs.html#howto>. 558 559 If you don't know what to do here, say N. 560 561config HAVE_DEC_LOCK 562 bool 563 depends on SMP 564 default y 565 566config NR_CPUS 567 int "Maximum number of CPUs (2-32)" 568 range 2 32 569 depends on SMP 570 default "32" if ALPHA_GENERIC || ALPHA_MARVEL 571 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL 572 help 573 MARVEL support can handle a maximum of 32 CPUs, all the others 574 with working support have a maximum of 4 CPUs. 575 576config ARCH_DISCONTIGMEM_ENABLE 577 bool "Discontiguous Memory Support" 578 help 579 Say Y to support efficient handling of discontiguous physical memory, 580 for architectures which are either NUMA (Non-Uniform Memory Access) 581 or have huge holes in the physical address space for other reasons. 582 See <file:Documentation/vm/numa> for more. 583 584source "mm/Kconfig" 585 586config NUMA 587 bool "NUMA Support (EXPERIMENTAL)" 588 depends on DISCONTIGMEM && BROKEN 589 help 590 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 591 Access). This option is for configuring high-end multiprocessor 592 server machines. If in doubt, say N. 593 594config ALPHA_WTINT 595 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC 596 default y if ALPHA_QEMU 597 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) 598 default n if !ALPHA_SRM && !ALPHA_GENERIC 599 default y if SMP 600 ---help--- 601 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU 602 to sleep until the next interrupt. This may reduce the power 603 consumed, and the heat produced by the computer. However, it has 604 the side effect of making the cycle counter unreliable as a timing 605 device across the sleep. 606 607 For emulation under QEMU, definitely say Y here, as we have other 608 mechanisms for measuring time than the cycle counter. 609 610 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running 611 MILO, sleep mode is not supported so you might as well say N here. 612 613 For SMP systems we cannot use the cycle counter for timing anyway, 614 so you might as well say Y here. 615 616 If unsure, say N. 617 618config NODES_SHIFT 619 int 620 default "7" 621 depends on NEED_MULTIPLE_NODES 622 623# LARGE_VMALLOC is racy, if you *really* need it then fix it first 624config ALPHA_LARGE_VMALLOC 625 bool 626 ---help--- 627 Process creation and other aspects of virtual memory management can 628 be streamlined if we restrict the kernel to one PGD for all vmalloc 629 allocations. This equates to about 8GB. 630 631 Under normal circumstances, this is so far and above what is needed 632 as to be laughable. However, there are certain applications (such 633 as benchmark-grade in-kernel web serving) that can make use of as 634 much vmalloc space as is available. 635 636 Say N unless you know you need gobs and gobs of vmalloc space. 637 638config VERBOSE_MCHECK 639 bool "Verbose Machine Checks" 640 641config VERBOSE_MCHECK_ON 642 int "Verbose Printing Mode (0=off, 1=on, 2=all)" 643 depends on VERBOSE_MCHECK 644 default 1 645 ---help--- 646 This option allows the default printing mode to be set, and then 647 possibly overridden by a boot command argument. 648 649 For example, if one wanted the option of printing verbose 650 machine checks, but wanted the default to be as if verbose 651 machine check printing was turned off, then one would choose 652 the printing mode to be 0. Then, upon reboot, one could add 653 the boot command line "verbose_mcheck=1" to get the normal 654 verbose machine check printing, or "verbose_mcheck=2" to get 655 the maximum information available. 656 657 Take the default (1) unless you want more control or more info. 658 659choice 660 prompt "Timer interrupt frequency (HZ)?" 661 default HZ_128 if ALPHA_QEMU 662 default HZ_1200 if ALPHA_RAWHIDE 663 default HZ_1024 664 ---help--- 665 The frequency at which timer interrupts occur. A high frequency 666 minimizes latency, whereas a low frequency minimizes overhead of 667 process accounting. The later effect is especially significant 668 when being run under QEMU. 669 670 Note that some Alpha hardware cannot change the interrupt frequency 671 of the timer. If unsure, say 1024 (or 1200 for Rawhide). 672 673 config HZ_32 674 bool "32 Hz" 675 config HZ_64 676 bool "64 Hz" 677 config HZ_128 678 bool "128 Hz" 679 config HZ_256 680 bool "256 Hz" 681 config HZ_1024 682 bool "1024 Hz" 683 config HZ_1200 684 bool "1200 Hz" 685endchoice 686 687config HZ 688 int 689 default 32 if HZ_32 690 default 64 if HZ_64 691 default 128 if HZ_128 692 default 256 if HZ_256 693 default 1200 if HZ_1200 694 default 1024 695 696source "drivers/pci/Kconfig" 697source "drivers/eisa/Kconfig" 698 699source "drivers/pcmcia/Kconfig" 700 701config SRM_ENV 702 tristate "SRM environment through procfs" 703 depends on PROC_FS 704 ---help--- 705 If you enable this option, a subdirectory inside /proc called 706 /proc/srm_environment will give you access to the all important 707 SRM environment variables (those which have a name) and also 708 to all others (by their internal number). 709 710 SRM is something like a BIOS for Alpha machines. There are some 711 other such BIOSes, like AlphaBIOS, which this driver cannot 712 support (hey, that's not SRM!). 713 714 Despite the fact that this driver doesn't work on all Alphas (but 715 only on those which have SRM as their firmware), it's save to 716 build it even if your particular machine doesn't know about SRM 717 (or if you intend to compile a generic kernel). It will simply 718 not create those subdirectory in /proc (and give you some warning, 719 of course). 720 721 This driver is also available as a module and will be called 722 srm_env then. 723 724source "fs/Kconfig.binfmt" 725 726endmenu 727 728source "net/Kconfig" 729 730source "drivers/Kconfig" 731 732source "fs/Kconfig" 733 734source "arch/alpha/Kconfig.debug" 735 736# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig 737# but we also need it if VGA_HOSE is set 738config DUMMY_CONSOLE 739 bool 740 depends on VGA_HOSE 741 default y 742 743source "security/Kconfig" 744 745source "crypto/Kconfig" 746 747source "lib/Kconfig" 748 749