1# SPDX-License-Identifier: GPL-2.0 2config ALPHA 3 bool 4 default y 5 select ARCH_MIGHT_HAVE_PC_PARPORT 6 select ARCH_MIGHT_HAVE_PC_SERIO 7 select ARCH_NO_PREEMPT 8 select ARCH_USE_CMPXCHG_LOCKREF 9 select HAVE_AOUT 10 select HAVE_IDE 11 select HAVE_OPROFILE 12 select HAVE_PCSPKR_PLATFORM 13 select HAVE_PERF_EVENTS 14 select NEED_DMA_MAP_STATE 15 select NEED_SG_DMA_LENGTH 16 select VIRT_TO_BUS 17 select GENERIC_IRQ_PROBE 18 select AUTO_IRQ_AFFINITY if SMP 19 select GENERIC_IRQ_SHOW 20 select ARCH_WANT_IPC_PARSE_VERSION 21 select ARCH_HAVE_NMI_SAFE_CMPXCHG 22 select AUDIT_ARCH 23 select GENERIC_CLOCKEVENTS 24 select GENERIC_CPU_VULNERABILITIES 25 select GENERIC_SMP_IDLE_THREAD 26 select GENERIC_STRNCPY_FROM_USER 27 select GENERIC_STRNLEN_USER 28 select HAVE_ARCH_AUDITSYSCALL 29 select HAVE_MOD_ARCH_SPECIFIC 30 select MODULES_USE_ELF_RELA 31 select ODD_RT_SIGACTION 32 select OLD_SIGSUSPEND 33 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67 34 help 35 The Alpha is a 64-bit general-purpose processor designed and 36 marketed by the Digital Equipment Corporation of blessed memory, 37 now Hewlett-Packard. The Alpha Linux project has a home page at 38 <http://www.alphalinux.org/>. 39 40config 64BIT 41 def_bool y 42 43config MMU 44 bool 45 default y 46 47config RWSEM_GENERIC_SPINLOCK 48 bool 49 50config RWSEM_XCHGADD_ALGORITHM 51 bool 52 default y 53 54config ARCH_HAS_ILOG2_U32 55 bool 56 default n 57 58config ARCH_HAS_ILOG2_U64 59 bool 60 default n 61 62config GENERIC_CALIBRATE_DELAY 63 bool 64 default y 65 66config ZONE_DMA 67 bool 68 default y 69 70config GENERIC_ISA_DMA 71 bool 72 default y 73 74config PGTABLE_LEVELS 75 int 76 default 3 77 78config AUDIT_ARCH 79 bool 80 81menu "System setup" 82 83choice 84 prompt "Alpha system type" 85 default ALPHA_GENERIC 86 ---help--- 87 This is the system type of your hardware. A "generic" kernel will 88 run on any supported Alpha system. However, if you configure a 89 kernel for your specific system, it will be faster and smaller. 90 91 To find out what type of Alpha system you have, you may want to 92 check out the Linux/Alpha FAQ, accessible on the WWW from 93 <http://www.alphalinux.org/>. In summary: 94 95 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 96 Alpha-XL XL-233, XL-266 97 AlphaBook1 Alpha laptop 98 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 99 Cabriolet AlphaPC64, AlphaPCI64 100 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 101 EB164 EB164 21164 evaluation board 102 EB64+ EB64+ 21064 evaluation board 103 EB66 EB66 21066 evaluation board 104 EB66+ EB66+ 21066 evaluation board 105 Jensen DECpc 150, DEC 2000 models 300, 500 106 LX164 AlphaPC164-LX 107 Lynx AS 2100A 108 Miata Personal Workstation 433/500/600 a/au 109 Marvel AlphaServer ES47 / ES80 / GS1280 110 Mikasa AS 1000 111 Noname AXPpci33, UDB (Multia) 112 Noritake AS 1000A, AS 600A, AS 800 113 PC164 AlphaPC164 114 Rawhide AS 1200, AS 4000, AS 4100 115 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 116 SX164 AlphaPC164-SX 117 Sable AS 2000, AS 2100 118 Shark DS 20L 119 Takara Takara (OEM) 120 Titan AlphaServer ES45 / DS25 / DS15 121 Wildfire AlphaServer GS 40/80/160/320 122 123 If you don't know what to do, choose "generic". 124 125config ALPHA_GENERIC 126 bool "Generic" 127 depends on TTY 128 help 129 A generic kernel will run on all supported Alpha hardware. 130 131config ALPHA_ALCOR 132 bool "Alcor/Alpha-XLT" 133 help 134 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 135 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 136 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 137 controller (256-bit memory bus) and a PCI interface. It also does 138 all the work required to support an external Bcache and to maintain 139 memory coherence when a PCI device DMAs into (or out of) memory. 140 141config ALPHA_XL 142 bool "Alpha-XL" 143 help 144 XL-233 and XL-266-based Alpha systems. 145 146config ALPHA_BOOK1 147 bool "AlphaBook1" 148 help 149 Dec AlphaBook1/Burns Alpha-based laptops. 150 151config ALPHA_AVANTI_CH 152 bool "Avanti" 153 154config ALPHA_CABRIOLET 155 bool "Cabriolet" 156 help 157 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 158 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 159 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 160 Bcache SIMMs. Requires power supply with 3.3V output. 161 162config ALPHA_DP264 163 bool "DP264" 164 help 165 Various 21264 systems with the tsunami core logic chipset. 166 API Networks: 264DP, UP2000(+), CS20; 167 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 168 169config ALPHA_EB164 170 bool "EB164" 171 help 172 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 173 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 174 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 175 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 176 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 177 motherboard. Requires power supply with 3.3V output. 178 179config ALPHA_EB64P_CH 180 bool "EB64+" 181 182config ALPHA_EB66 183 bool "EB66" 184 help 185 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 186 identical to EB64+. Baby PC-AT size. Runs from standard PC power 187 supply. The EB66 schematic was published as a marketing poster 188 advertising the 21066 as "the first microprocessor in the world with 189 embedded PCI". 190 191config ALPHA_EB66P 192 bool "EB66+" 193 help 194 Later variant of the EB66 board. 195 196config ALPHA_EIGER 197 bool "Eiger" 198 help 199 Apparently an obscure OEM single-board computer based on the 200 Typhoon/Tsunami chipset family. Information on it is scanty. 201 202config ALPHA_JENSEN 203 bool "Jensen" 204 depends on BROKEN 205 select DMA_DIRECT_OPS 206 help 207 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one 208 of the first-generation Alpha systems. A number of these systems 209 seem to be available on the second- hand market. The Jensen is a 210 floor-standing tower system which originally used a 150MHz 21064 It 211 used programmable logic to interface a 486 EISA I/O bridge to the 212 CPU. 213 214config ALPHA_LX164 215 bool "LX164" 216 help 217 A technical overview of this board is available at 218 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. 219 220config ALPHA_LYNX 221 bool "Lynx" 222 help 223 AlphaServer 2100A-based systems. 224 225config ALPHA_MARVEL 226 bool "Marvel" 227 help 228 AlphaServer ES47 / ES80 / GS1280 based on EV7. 229 230config ALPHA_MIATA 231 bool "Miata" 232 help 233 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, 234 or 600au). 235 236config ALPHA_MIKASA 237 bool "Mikasa" 238 help 239 AlphaServer 1000-based Alpha systems. 240 241config ALPHA_NAUTILUS 242 bool "Nautilus" 243 help 244 Alpha systems based on the AMD 751 & ALI 1543C chipsets. 245 246config ALPHA_NONAME_CH 247 bool "Noname" 248 249config ALPHA_NORITAKE 250 bool "Noritake" 251 help 252 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based 253 systems. 254 255config ALPHA_PC164 256 bool "PC164" 257 258config ALPHA_P2K 259 bool "Platform2000" 260 261config ALPHA_RAWHIDE 262 bool "Rawhide" 263 help 264 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. 265 See HOWTO at 266 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. 267 268config ALPHA_RUFFIAN 269 bool "Ruffian" 270 help 271 Samsung APC164UX. There is a page on known problems and workarounds 272 at <http://www.alphalinux.org/faq/FAQ-11.html>. 273 274config ALPHA_RX164 275 bool "RX164" 276 277config ALPHA_SX164 278 bool "SX164" 279 280config ALPHA_SABLE 281 bool "Sable" 282 help 283 Digital AlphaServer 2000 and 2100-based systems. 284 285config ALPHA_SHARK 286 bool "Shark" 287 288config ALPHA_TAKARA 289 bool "Takara" 290 help 291 Alpha 11164-based OEM single-board computer. 292 293config ALPHA_TITAN 294 bool "Titan" 295 help 296 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. 297 298config ALPHA_WILDFIRE 299 bool "Wildfire" 300 help 301 AlphaServer GS 40/80/160/320 SMP based on the EV67 core. 302 303endchoice 304 305# clear all implied options (don't want default values for those): 306# Most of these machines have ISA slots; not exactly sure which don't, 307# and this doesn't activate hordes of code, so do it always. 308config ISA 309 bool 310 default y 311 help 312 Find out whether you have ISA slots on your motherboard. ISA is the 313 name of a bus system, i.e. the way the CPU talks to the other stuff 314 inside your box. Other bus systems are PCI, EISA, MicroChannel 315 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 316 newer boards don't support it. If you have ISA, say Y, otherwise N. 317 318config ISA_DMA_API 319 bool 320 default y 321 322config PCI 323 bool 324 depends on !ALPHA_JENSEN 325 select GENERIC_PCI_IOMAP 326 default y 327 help 328 Find out whether you have a PCI motherboard. PCI is the name of a 329 bus system, i.e. the way the CPU talks to the other stuff inside 330 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 331 VESA. If you have PCI, say Y, otherwise N. 332 333config PCI_DOMAINS 334 bool 335 default y 336 337config PCI_SYSCALL 338 def_bool PCI 339 340config ALPHA_NONAME 341 bool 342 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 343 default y 344 help 345 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 346 UDB). This design was produced by Digital's Technical OEM (TOEM) 347 group. It uses the 21066 processor running at 166MHz or 233MHz. It 348 is a baby-AT size, and runs from a standard PC power supply. It has 349 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 350 2 versions, with either PS/2 or large DIN connectors for the 351 keyboard. 352 353config ALPHA_EV4 354 bool 355 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 356 default y if !ALPHA_LYNX 357 358config ALPHA_LCA 359 bool 360 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 361 default y 362 363config ALPHA_APECS 364 bool 365 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 366 default y 367 368config ALPHA_EB64P 369 bool 370 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 371 default y 372 help 373 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 374 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 375 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 376 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 377 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 378 Runs from standard PC power supply. 379 380config ALPHA_EV5 381 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 382 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 383 384config ALPHA_EV4 385 bool 386 default y if ALPHA_LYNX && !ALPHA_EV5 387 388config ALPHA_CIA 389 bool 390 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 391 default y 392 393config ALPHA_EV56 394 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 395 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 396 397config ALPHA_EV56 398 prompt "EV56 CPU (speed >= 333MHz)?" 399 depends on ALPHA_NORITAKE || ALPHA_PRIMO 400 401config ALPHA_EV56 402 prompt "EV56 CPU (speed >= 400MHz)?" 403 depends on ALPHA_RAWHIDE 404 405config ALPHA_PRIMO 406 bool "EV5 CPU daughtercard (model 5/xxx)?" 407 depends on ALPHA_NORITAKE || ALPHA_MIKASA 408 help 409 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 410 411config ALPHA_GAMMA 412 bool "EV5 CPU(s) (model 5/xxx)?" 413 depends on ALPHA_SABLE 414 help 415 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 416 417config ALPHA_GAMMA 418 bool 419 depends on ALPHA_LYNX 420 default y 421 422config ALPHA_T2 423 bool 424 depends on ALPHA_SABLE || ALPHA_LYNX 425 default y 426 427config ALPHA_PYXIS 428 bool 429 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 430 default y 431 432config ALPHA_EV6 433 bool 434 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 435 default y 436 437config ALPHA_TSUNAMI 438 bool 439 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 440 default y 441 442config ALPHA_EV67 443 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 444 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 445 help 446 Is this a machine based on the EV67 core? If in doubt, select N here 447 and the machine will be treated as an EV6. 448 449config ALPHA_MCPCIA 450 bool 451 depends on ALPHA_RAWHIDE 452 default y 453 454config ALPHA_POLARIS 455 bool 456 depends on ALPHA_RX164 457 default y 458 459config ALPHA_IRONGATE 460 bool 461 depends on ALPHA_NAUTILUS 462 default y 463 464config GENERIC_HWEIGHT 465 bool 466 default y if !ALPHA_EV67 467 468config ALPHA_AVANTI 469 bool 470 depends on ALPHA_XL || ALPHA_AVANTI_CH 471 default y 472 help 473 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 474 Alphas. Info at 475 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 476 477config ALPHA_BROKEN_IRQ_MASK 478 bool 479 depends on ALPHA_GENERIC || ALPHA_PC164 480 default y 481 482config VGA_HOSE 483 bool 484 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 485 default y 486 help 487 Support VGA on an arbitrary hose; needed for several platforms 488 which always have multiple hoses, and whose consoles support it. 489 490 491config ALPHA_QEMU 492 bool "Run under QEMU emulation" 493 depends on !ALPHA_GENERIC 494 ---help--- 495 Assume the presence of special features supported by QEMU PALcode 496 that reduce the overhead of system emulation. 497 498 Generic kernels will auto-detect QEMU. But when building a 499 system-specific kernel, the assumption is that we want to 500 eliminate as many runtime tests as possible. 501 502 If unsure, say N. 503 504 505config ALPHA_SRM 506 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 507 depends on TTY 508 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 509 ---help--- 510 There are two different types of booting firmware on Alphas: SRM, 511 which is command line driven, and ARC, which uses menus and arrow 512 keys. Details about the Linux/Alpha booting process are contained in 513 the Linux/Alpha FAQ, accessible on the WWW from 514 <http://www.alphalinux.org/>. 515 516 The usual way to load Linux on an Alpha machine is to use MILO 517 (a bootloader that lets you pass command line parameters to the 518 kernel just like lilo does for the x86 architecture) which can be 519 loaded either from ARC or can be installed directly as a permanent 520 firmware replacement from floppy (which requires changing a certain 521 jumper on the motherboard). If you want to do either of these, say N 522 here. If MILO doesn't work on your system (true for Jensen 523 motherboards), you can bypass it altogether and boot Linux directly 524 from an SRM console; say Y here in order to do that. Note that you 525 won't be able to boot from an IDE disk using SRM. 526 527 If unsure, say N. 528 529config EISA 530 bool 531 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE 532 default y 533 534config ARCH_MAY_HAVE_PC_FDC 535 def_bool y 536 537config SMP 538 bool "Symmetric multi-processing support" 539 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL 540 ---help--- 541 This enables support for systems with more than one CPU. If you have 542 a system with only one CPU, say N. If you have a system with more 543 than one CPU, say Y. 544 545 If you say N here, the kernel will run on uni- and multiprocessor 546 machines, but will use only one CPU of a multiprocessor machine. If 547 you say Y here, the kernel will run on many, but not all, 548 uniprocessor machines. On a uniprocessor machine, the kernel 549 will run faster if you say N here. 550 551 See also the SMP-HOWTO available at 552 <http://www.tldp.org/docs.html#howto>. 553 554 If you don't know what to do here, say N. 555 556config NR_CPUS 557 int "Maximum number of CPUs (2-32)" 558 range 2 32 559 depends on SMP 560 default "32" if ALPHA_GENERIC || ALPHA_MARVEL 561 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL 562 help 563 MARVEL support can handle a maximum of 32 CPUs, all the others 564 with working support have a maximum of 4 CPUs. 565 566config ARCH_DISCONTIGMEM_ENABLE 567 bool "Discontiguous Memory Support" 568 help 569 Say Y to support efficient handling of discontiguous physical memory, 570 for architectures which are either NUMA (Non-Uniform Memory Access) 571 or have huge holes in the physical address space for other reasons. 572 See <file:Documentation/vm/numa.rst> for more. 573 574config NUMA 575 bool "NUMA Support (EXPERIMENTAL)" 576 depends on DISCONTIGMEM && BROKEN 577 help 578 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 579 Access). This option is for configuring high-end multiprocessor 580 server machines. If in doubt, say N. 581 582config ALPHA_WTINT 583 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC 584 default y if ALPHA_QEMU 585 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) 586 default n if !ALPHA_SRM && !ALPHA_GENERIC 587 default y if SMP 588 ---help--- 589 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU 590 to sleep until the next interrupt. This may reduce the power 591 consumed, and the heat produced by the computer. However, it has 592 the side effect of making the cycle counter unreliable as a timing 593 device across the sleep. 594 595 For emulation under QEMU, definitely say Y here, as we have other 596 mechanisms for measuring time than the cycle counter. 597 598 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running 599 MILO, sleep mode is not supported so you might as well say N here. 600 601 For SMP systems we cannot use the cycle counter for timing anyway, 602 so you might as well say Y here. 603 604 If unsure, say N. 605 606config NODES_SHIFT 607 int 608 default "7" 609 depends on NEED_MULTIPLE_NODES 610 611# LARGE_VMALLOC is racy, if you *really* need it then fix it first 612config ALPHA_LARGE_VMALLOC 613 bool 614 ---help--- 615 Process creation and other aspects of virtual memory management can 616 be streamlined if we restrict the kernel to one PGD for all vmalloc 617 allocations. This equates to about 8GB. 618 619 Under normal circumstances, this is so far and above what is needed 620 as to be laughable. However, there are certain applications (such 621 as benchmark-grade in-kernel web serving) that can make use of as 622 much vmalloc space as is available. 623 624 Say N unless you know you need gobs and gobs of vmalloc space. 625 626config VERBOSE_MCHECK 627 bool "Verbose Machine Checks" 628 629config VERBOSE_MCHECK_ON 630 int "Verbose Printing Mode (0=off, 1=on, 2=all)" 631 depends on VERBOSE_MCHECK 632 default 1 633 ---help--- 634 This option allows the default printing mode to be set, and then 635 possibly overridden by a boot command argument. 636 637 For example, if one wanted the option of printing verbose 638 machine checks, but wanted the default to be as if verbose 639 machine check printing was turned off, then one would choose 640 the printing mode to be 0. Then, upon reboot, one could add 641 the boot command line "verbose_mcheck=1" to get the normal 642 verbose machine check printing, or "verbose_mcheck=2" to get 643 the maximum information available. 644 645 Take the default (1) unless you want more control or more info. 646 647choice 648 prompt "Timer interrupt frequency (HZ)?" 649 default HZ_128 if ALPHA_QEMU 650 default HZ_1200 if ALPHA_RAWHIDE 651 default HZ_1024 652 ---help--- 653 The frequency at which timer interrupts occur. A high frequency 654 minimizes latency, whereas a low frequency minimizes overhead of 655 process accounting. The later effect is especially significant 656 when being run under QEMU. 657 658 Note that some Alpha hardware cannot change the interrupt frequency 659 of the timer. If unsure, say 1024 (or 1200 for Rawhide). 660 661 config HZ_32 662 bool "32 Hz" 663 config HZ_64 664 bool "64 Hz" 665 config HZ_128 666 bool "128 Hz" 667 config HZ_256 668 bool "256 Hz" 669 config HZ_1024 670 bool "1024 Hz" 671 config HZ_1200 672 bool "1200 Hz" 673endchoice 674 675config HZ 676 int 677 default 32 if HZ_32 678 default 64 if HZ_64 679 default 128 if HZ_128 680 default 256 if HZ_256 681 default 1200 if HZ_1200 682 default 1024 683 684source "drivers/pci/Kconfig" 685source "drivers/eisa/Kconfig" 686 687source "drivers/pcmcia/Kconfig" 688 689config SRM_ENV 690 tristate "SRM environment through procfs" 691 depends on PROC_FS 692 ---help--- 693 If you enable this option, a subdirectory inside /proc called 694 /proc/srm_environment will give you access to the all important 695 SRM environment variables (those which have a name) and also 696 to all others (by their internal number). 697 698 SRM is something like a BIOS for Alpha machines. There are some 699 other such BIOSes, like AlphaBIOS, which this driver cannot 700 support (hey, that's not SRM!). 701 702 Despite the fact that this driver doesn't work on all Alphas (but 703 only on those which have SRM as their firmware), it's save to 704 build it even if your particular machine doesn't know about SRM 705 (or if you intend to compile a generic kernel). It will simply 706 not create those subdirectory in /proc (and give you some warning, 707 of course). 708 709 This driver is also available as a module and will be called 710 srm_env then. 711 712endmenu 713 714# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig 715# but we also need it if VGA_HOSE is set 716config DUMMY_CONSOLE 717 bool 718 depends on VGA_HOSE 719 default y 720