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_USE_CMPXCHG_LOCKREF 8 select HAVE_AOUT 9 select HAVE_IDE 10 select HAVE_OPROFILE 11 select HAVE_PCSPKR_PLATFORM 12 select HAVE_PERF_EVENTS 13 select VIRT_TO_BUS 14 select GENERIC_IRQ_PROBE 15 select AUTO_IRQ_AFFINITY if SMP 16 select GENERIC_IRQ_SHOW 17 select ARCH_WANT_IPC_PARSE_VERSION 18 select ARCH_HAVE_NMI_SAFE_CMPXCHG 19 select AUDIT_ARCH 20 select GENERIC_CLOCKEVENTS 21 select GENERIC_CPU_VULNERABILITIES 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 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67 31 help 32 The Alpha is a 64-bit general-purpose processor designed and 33 marketed by the Digital Equipment Corporation of blessed memory, 34 now Hewlett-Packard. The Alpha Linux project has a home page at 35 <http://www.alphalinux.org/>. 36 37config 64BIT 38 def_bool y 39 40config MMU 41 bool 42 default y 43 44config RWSEM_GENERIC_SPINLOCK 45 bool 46 47config RWSEM_XCHGADD_ALGORITHM 48 bool 49 default y 50 51config ARCH_HAS_ILOG2_U32 52 bool 53 default n 54 55config ARCH_HAS_ILOG2_U64 56 bool 57 default n 58 59config GENERIC_CALIBRATE_DELAY 60 bool 61 default y 62 63config ZONE_DMA 64 bool 65 default y 66 67config ARCH_DMA_ADDR_T_64BIT 68 def_bool y 69 70config NEED_DMA_MAP_STATE 71 def_bool y 72 73config NEED_SG_DMA_LENGTH 74 def_bool y 75 76config GENERIC_ISA_DMA 77 bool 78 default y 79 80config PGTABLE_LEVELS 81 int 82 default 3 83 84source "init/Kconfig" 85source "kernel/Kconfig.freezer" 86 87config AUDIT_ARCH 88 bool 89 90menu "System setup" 91 92choice 93 prompt "Alpha system type" 94 default ALPHA_GENERIC 95 ---help--- 96 This is the system type of your hardware. A "generic" kernel will 97 run on any supported Alpha system. However, if you configure a 98 kernel for your specific system, it will be faster and smaller. 99 100 To find out what type of Alpha system you have, you may want to 101 check out the Linux/Alpha FAQ, accessible on the WWW from 102 <http://www.alphalinux.org/>. In summary: 103 104 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 105 Alpha-XL XL-233, XL-266 106 AlphaBook1 Alpha laptop 107 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 108 Cabriolet AlphaPC64, AlphaPCI64 109 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 110 EB164 EB164 21164 evaluation board 111 EB64+ EB64+ 21064 evaluation board 112 EB66 EB66 21066 evaluation board 113 EB66+ EB66+ 21066 evaluation board 114 Jensen DECpc 150, DEC 2000 models 300, 500 115 LX164 AlphaPC164-LX 116 Lynx AS 2100A 117 Miata Personal Workstation 433/500/600 a/au 118 Marvel AlphaServer ES47 / ES80 / GS1280 119 Mikasa AS 1000 120 Noname AXPpci33, UDB (Multia) 121 Noritake AS 1000A, AS 600A, AS 800 122 PC164 AlphaPC164 123 Rawhide AS 1200, AS 4000, AS 4100 124 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 125 SX164 AlphaPC164-SX 126 Sable AS 2000, AS 2100 127 Shark DS 20L 128 Takara Takara (OEM) 129 Titan AlphaServer ES45 / DS25 / DS15 130 Wildfire AlphaServer GS 40/80/160/320 131 132 If you don't know what to do, choose "generic". 133 134config ALPHA_GENERIC 135 bool "Generic" 136 depends on TTY 137 help 138 A generic kernel will run on all supported Alpha hardware. 139 140config ALPHA_ALCOR 141 bool "Alcor/Alpha-XLT" 142 help 143 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 144 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 145 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 146 controller (256-bit memory bus) and a PCI interface. It also does 147 all the work required to support an external Bcache and to maintain 148 memory coherence when a PCI device DMAs into (or out of) memory. 149 150config ALPHA_XL 151 bool "Alpha-XL" 152 help 153 XL-233 and XL-266-based Alpha systems. 154 155config ALPHA_BOOK1 156 bool "AlphaBook1" 157 help 158 Dec AlphaBook1/Burns Alpha-based laptops. 159 160config ALPHA_AVANTI_CH 161 bool "Avanti" 162 163config ALPHA_CABRIOLET 164 bool "Cabriolet" 165 help 166 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 167 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 168 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 169 Bcache SIMMs. Requires power supply with 3.3V output. 170 171config ALPHA_DP264 172 bool "DP264" 173 help 174 Various 21264 systems with the tsunami core logic chipset. 175 API Networks: 264DP, UP2000(+), CS20; 176 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 177 178config ALPHA_EB164 179 bool "EB164" 180 help 181 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 182 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 183 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 184 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 185 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 186 motherboard. Requires power supply with 3.3V output. 187 188config ALPHA_EB64P_CH 189 bool "EB64+" 190 191config ALPHA_EB66 192 bool "EB66" 193 help 194 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 195 identical to EB64+. Baby PC-AT size. Runs from standard PC power 196 supply. The EB66 schematic was published as a marketing poster 197 advertising the 21066 as "the first microprocessor in the world with 198 embedded PCI". 199 200config ALPHA_EB66P 201 bool "EB66+" 202 help 203 Later variant of the EB66 board. 204 205config ALPHA_EIGER 206 bool "Eiger" 207 help 208 Apparently an obscure OEM single-board computer based on the 209 Typhoon/Tsunami chipset family. Information on it is scanty. 210 211config ALPHA_JENSEN 212 bool "Jensen" 213 depends on BROKEN 214 help 215 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one 216 of the first-generation Alpha systems. A number of these systems 217 seem to be available on the second- hand market. The Jensen is a 218 floor-standing tower system which originally used a 150MHz 21064 It 219 used programmable logic to interface a 486 EISA I/O bridge to the 220 CPU. 221 222config ALPHA_LX164 223 bool "LX164" 224 help 225 A technical overview of this board is available at 226 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>. 227 228config ALPHA_LYNX 229 bool "Lynx" 230 help 231 AlphaServer 2100A-based systems. 232 233config ALPHA_MARVEL 234 bool "Marvel" 235 help 236 AlphaServer ES47 / ES80 / GS1280 based on EV7. 237 238config ALPHA_MIATA 239 bool "Miata" 240 help 241 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a, 242 or 600au). 243 244config ALPHA_MIKASA 245 bool "Mikasa" 246 help 247 AlphaServer 1000-based Alpha systems. 248 249config ALPHA_NAUTILUS 250 bool "Nautilus" 251 help 252 Alpha systems based on the AMD 751 & ALI 1543C chipsets. 253 254config ALPHA_NONAME_CH 255 bool "Noname" 256 257config ALPHA_NORITAKE 258 bool "Noritake" 259 help 260 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based 261 systems. 262 263config ALPHA_PC164 264 bool "PC164" 265 266config ALPHA_P2K 267 bool "Platform2000" 268 269config ALPHA_RAWHIDE 270 bool "Rawhide" 271 help 272 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines. 273 See HOWTO at 274 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>. 275 276config ALPHA_RUFFIAN 277 bool "Ruffian" 278 help 279 Samsung APC164UX. There is a page on known problems and workarounds 280 at <http://www.alphalinux.org/faq/FAQ-11.html>. 281 282config ALPHA_RX164 283 bool "RX164" 284 285config ALPHA_SX164 286 bool "SX164" 287 288config ALPHA_SABLE 289 bool "Sable" 290 help 291 Digital AlphaServer 2000 and 2100-based systems. 292 293config ALPHA_SHARK 294 bool "Shark" 295 296config ALPHA_TAKARA 297 bool "Takara" 298 help 299 Alpha 11164-based OEM single-board computer. 300 301config ALPHA_TITAN 302 bool "Titan" 303 help 304 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset. 305 306config ALPHA_WILDFIRE 307 bool "Wildfire" 308 help 309 AlphaServer GS 40/80/160/320 SMP based on the EV67 core. 310 311endchoice 312 313# clear all implied options (don't want default values for those): 314# Most of these machines have ISA slots; not exactly sure which don't, 315# and this doesn't activate hordes of code, so do it always. 316config ISA 317 bool 318 default y 319 help 320 Find out whether you have ISA slots on your motherboard. ISA is the 321 name of a bus system, i.e. the way the CPU talks to the other stuff 322 inside your box. Other bus systems are PCI, EISA, MicroChannel 323 (MCA) or VESA. ISA is an older system, now being displaced by PCI; 324 newer boards don't support it. If you have ISA, say Y, otherwise N. 325 326config ISA_DMA_API 327 bool 328 default y 329 330config PCI 331 bool 332 depends on !ALPHA_JENSEN 333 select GENERIC_PCI_IOMAP 334 default y 335 help 336 Find out whether you have a PCI motherboard. PCI is the name of a 337 bus system, i.e. the way the CPU talks to the other stuff inside 338 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 339 VESA. If you have PCI, say Y, otherwise N. 340 341config PCI_DOMAINS 342 bool 343 default y 344 345config PCI_SYSCALL 346 def_bool PCI 347 348config IOMMU_HELPER 349 def_bool PCI 350 351config ALPHA_NONAME 352 bool 353 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 354 default y 355 help 356 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 357 UDB). This design was produced by Digital's Technical OEM (TOEM) 358 group. It uses the 21066 processor running at 166MHz or 233MHz. It 359 is a baby-AT size, and runs from a standard PC power supply. It has 360 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 361 2 versions, with either PS/2 or large DIN connectors for the 362 keyboard. 363 364config ALPHA_EV4 365 bool 366 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 367 default y if !ALPHA_LYNX 368 369config ALPHA_LCA 370 bool 371 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 372 default y 373 374config ALPHA_APECS 375 bool 376 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 377 default y 378 379config ALPHA_EB64P 380 bool 381 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 382 default y 383 help 384 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 385 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 386 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 387 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 388 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 389 Runs from standard PC power supply. 390 391config ALPHA_EV5 392 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 393 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 394 395config ALPHA_EV4 396 bool 397 default y if ALPHA_LYNX && !ALPHA_EV5 398 399config ALPHA_CIA 400 bool 401 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 402 default y 403 404config ALPHA_EV56 405 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 406 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 407 408config ALPHA_EV56 409 prompt "EV56 CPU (speed >= 333MHz)?" 410 depends on ALPHA_NORITAKE || ALPHA_PRIMO 411 412config ALPHA_EV56 413 prompt "EV56 CPU (speed >= 400MHz)?" 414 depends on ALPHA_RAWHIDE 415 416config ALPHA_PRIMO 417 bool "EV5 CPU daughtercard (model 5/xxx)?" 418 depends on ALPHA_NORITAKE || ALPHA_MIKASA 419 help 420 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 421 422config ALPHA_GAMMA 423 bool "EV5 CPU(s) (model 5/xxx)?" 424 depends on ALPHA_SABLE 425 help 426 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 427 428config ALPHA_GAMMA 429 bool 430 depends on ALPHA_LYNX 431 default y 432 433config ALPHA_T2 434 bool 435 depends on ALPHA_SABLE || ALPHA_LYNX 436 default y 437 438config ALPHA_PYXIS 439 bool 440 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 441 default y 442 443config ALPHA_EV6 444 bool 445 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 446 default y 447 448config ALPHA_TSUNAMI 449 bool 450 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 451 default y 452 453config ALPHA_EV67 454 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 455 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 456 help 457 Is this a machine based on the EV67 core? If in doubt, select N here 458 and the machine will be treated as an EV6. 459 460config ALPHA_MCPCIA 461 bool 462 depends on ALPHA_RAWHIDE 463 default y 464 465config ALPHA_POLARIS 466 bool 467 depends on ALPHA_RX164 468 default y 469 470config ALPHA_IRONGATE 471 bool 472 depends on ALPHA_NAUTILUS 473 default y 474 475config GENERIC_HWEIGHT 476 bool 477 default y if !ALPHA_EV67 478 479config ALPHA_AVANTI 480 bool 481 depends on ALPHA_XL || ALPHA_AVANTI_CH 482 default y 483 help 484 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 485 Alphas. Info at 486 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 487 488config ALPHA_BROKEN_IRQ_MASK 489 bool 490 depends on ALPHA_GENERIC || ALPHA_PC164 491 default y 492 493config VGA_HOSE 494 bool 495 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 496 default y 497 help 498 Support VGA on an arbitrary hose; needed for several platforms 499 which always have multiple hoses, and whose consoles support it. 500 501 502config ALPHA_QEMU 503 bool "Run under QEMU emulation" 504 depends on !ALPHA_GENERIC 505 ---help--- 506 Assume the presence of special features supported by QEMU PALcode 507 that reduce the overhead of system emulation. 508 509 Generic kernels will auto-detect QEMU. But when building a 510 system-specific kernel, the assumption is that we want to 511 eliminate as many runtime tests as possible. 512 513 If unsure, say N. 514 515 516config ALPHA_SRM 517 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 518 depends on TTY 519 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 520 ---help--- 521 There are two different types of booting firmware on Alphas: SRM, 522 which is command line driven, and ARC, which uses menus and arrow 523 keys. Details about the Linux/Alpha booting process are contained in 524 the Linux/Alpha FAQ, accessible on the WWW from 525 <http://www.alphalinux.org/>. 526 527 The usual way to load Linux on an Alpha machine is to use MILO 528 (a bootloader that lets you pass command line parameters to the 529 kernel just like lilo does for the x86 architecture) which can be 530 loaded either from ARC or can be installed directly as a permanent 531 firmware replacement from floppy (which requires changing a certain 532 jumper on the motherboard). If you want to do either of these, say N 533 here. If MILO doesn't work on your system (true for Jensen 534 motherboards), you can bypass it altogether and boot Linux directly 535 from an SRM console; say Y here in order to do that. Note that you 536 won't be able to boot from an IDE disk using SRM. 537 538 If unsure, say N. 539 540config EISA 541 bool 542 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE 543 default y 544 545config ARCH_MAY_HAVE_PC_FDC 546 def_bool y 547 548config SMP 549 bool "Symmetric multi-processing support" 550 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL 551 ---help--- 552 This enables support for systems with more than one CPU. If you have 553 a system with only one CPU, say N. If you have a system with more 554 than one CPU, say Y. 555 556 If you say N here, the kernel will run on uni- and multiprocessor 557 machines, but will use only one CPU of a multiprocessor machine. If 558 you say Y here, the kernel will run on many, but not all, 559 uniprocessor machines. On a uniprocessor machine, the kernel 560 will run faster if you say N here. 561 562 See also the SMP-HOWTO available at 563 <http://www.tldp.org/docs.html#howto>. 564 565 If you don't know what to do here, say N. 566 567config HAVE_DEC_LOCK 568 bool 569 depends on SMP 570 default y 571 572config NR_CPUS 573 int "Maximum number of CPUs (2-32)" 574 range 2 32 575 depends on SMP 576 default "32" if ALPHA_GENERIC || ALPHA_MARVEL 577 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL 578 help 579 MARVEL support can handle a maximum of 32 CPUs, all the others 580 with working support have a maximum of 4 CPUs. 581 582config ARCH_DISCONTIGMEM_ENABLE 583 bool "Discontiguous Memory Support" 584 help 585 Say Y to support efficient handling of discontiguous physical memory, 586 for architectures which are either NUMA (Non-Uniform Memory Access) 587 or have huge holes in the physical address space for other reasons. 588 See <file:Documentation/vm/numa> for more. 589 590source "mm/Kconfig" 591 592config NUMA 593 bool "NUMA Support (EXPERIMENTAL)" 594 depends on DISCONTIGMEM && BROKEN 595 help 596 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 597 Access). This option is for configuring high-end multiprocessor 598 server machines. If in doubt, say N. 599 600config ALPHA_WTINT 601 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC 602 default y if ALPHA_QEMU 603 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) 604 default n if !ALPHA_SRM && !ALPHA_GENERIC 605 default y if SMP 606 ---help--- 607 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU 608 to sleep until the next interrupt. This may reduce the power 609 consumed, and the heat produced by the computer. However, it has 610 the side effect of making the cycle counter unreliable as a timing 611 device across the sleep. 612 613 For emulation under QEMU, definitely say Y here, as we have other 614 mechanisms for measuring time than the cycle counter. 615 616 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running 617 MILO, sleep mode is not supported so you might as well say N here. 618 619 For SMP systems we cannot use the cycle counter for timing anyway, 620 so you might as well say Y here. 621 622 If unsure, say N. 623 624config NODES_SHIFT 625 int 626 default "7" 627 depends on NEED_MULTIPLE_NODES 628 629# LARGE_VMALLOC is racy, if you *really* need it then fix it first 630config ALPHA_LARGE_VMALLOC 631 bool 632 ---help--- 633 Process creation and other aspects of virtual memory management can 634 be streamlined if we restrict the kernel to one PGD for all vmalloc 635 allocations. This equates to about 8GB. 636 637 Under normal circumstances, this is so far and above what is needed 638 as to be laughable. However, there are certain applications (such 639 as benchmark-grade in-kernel web serving) that can make use of as 640 much vmalloc space as is available. 641 642 Say N unless you know you need gobs and gobs of vmalloc space. 643 644config VERBOSE_MCHECK 645 bool "Verbose Machine Checks" 646 647config VERBOSE_MCHECK_ON 648 int "Verbose Printing Mode (0=off, 1=on, 2=all)" 649 depends on VERBOSE_MCHECK 650 default 1 651 ---help--- 652 This option allows the default printing mode to be set, and then 653 possibly overridden by a boot command argument. 654 655 For example, if one wanted the option of printing verbose 656 machine checks, but wanted the default to be as if verbose 657 machine check printing was turned off, then one would choose 658 the printing mode to be 0. Then, upon reboot, one could add 659 the boot command line "verbose_mcheck=1" to get the normal 660 verbose machine check printing, or "verbose_mcheck=2" to get 661 the maximum information available. 662 663 Take the default (1) unless you want more control or more info. 664 665choice 666 prompt "Timer interrupt frequency (HZ)?" 667 default HZ_128 if ALPHA_QEMU 668 default HZ_1200 if ALPHA_RAWHIDE 669 default HZ_1024 670 ---help--- 671 The frequency at which timer interrupts occur. A high frequency 672 minimizes latency, whereas a low frequency minimizes overhead of 673 process accounting. The later effect is especially significant 674 when being run under QEMU. 675 676 Note that some Alpha hardware cannot change the interrupt frequency 677 of the timer. If unsure, say 1024 (or 1200 for Rawhide). 678 679 config HZ_32 680 bool "32 Hz" 681 config HZ_64 682 bool "64 Hz" 683 config HZ_128 684 bool "128 Hz" 685 config HZ_256 686 bool "256 Hz" 687 config HZ_1024 688 bool "1024 Hz" 689 config HZ_1200 690 bool "1200 Hz" 691endchoice 692 693config HZ 694 int 695 default 32 if HZ_32 696 default 64 if HZ_64 697 default 128 if HZ_128 698 default 256 if HZ_256 699 default 1200 if HZ_1200 700 default 1024 701 702source "drivers/pci/Kconfig" 703source "drivers/eisa/Kconfig" 704 705source "drivers/pcmcia/Kconfig" 706 707config SRM_ENV 708 tristate "SRM environment through procfs" 709 depends on PROC_FS 710 ---help--- 711 If you enable this option, a subdirectory inside /proc called 712 /proc/srm_environment will give you access to the all important 713 SRM environment variables (those which have a name) and also 714 to all others (by their internal number). 715 716 SRM is something like a BIOS for Alpha machines. There are some 717 other such BIOSes, like AlphaBIOS, which this driver cannot 718 support (hey, that's not SRM!). 719 720 Despite the fact that this driver doesn't work on all Alphas (but 721 only on those which have SRM as their firmware), it's save to 722 build it even if your particular machine doesn't know about SRM 723 (or if you intend to compile a generic kernel). It will simply 724 not create those subdirectory in /proc (and give you some warning, 725 of course). 726 727 This driver is also available as a module and will be called 728 srm_env then. 729 730source "fs/Kconfig.binfmt" 731 732endmenu 733 734source "net/Kconfig" 735 736source "drivers/Kconfig" 737 738source "fs/Kconfig" 739 740source "arch/alpha/Kconfig.debug" 741 742# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig 743# but we also need it if VGA_HOSE is set 744config DUMMY_CONSOLE 745 bool 746 depends on VGA_HOSE 747 default y 748 749source "security/Kconfig" 750 751source "crypto/Kconfig" 752 753source "lib/Kconfig" 754 755