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 NEED_DMA_MAP_STATE 14 select NEED_SG_DMA_LENGTH 15 select VIRT_TO_BUS 16 select GENERIC_IRQ_PROBE 17 select AUTO_IRQ_AFFINITY if SMP 18 select GENERIC_IRQ_SHOW 19 select ARCH_WANT_IPC_PARSE_VERSION 20 select ARCH_HAVE_NMI_SAFE_CMPXCHG 21 select AUDIT_ARCH 22 select GENERIC_CLOCKEVENTS 23 select GENERIC_CPU_VULNERABILITIES 24 select GENERIC_SMP_IDLE_THREAD 25 select GENERIC_STRNCPY_FROM_USER 26 select GENERIC_STRNLEN_USER 27 select HAVE_ARCH_AUDITSYSCALL 28 select HAVE_MOD_ARCH_SPECIFIC 29 select MODULES_USE_ELF_RELA 30 select ODD_RT_SIGACTION 31 select OLD_SIGSUSPEND 32 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67 33 help 34 The Alpha is a 64-bit general-purpose processor designed and 35 marketed by the Digital Equipment Corporation of blessed memory, 36 now Hewlett-Packard. The Alpha Linux project has a home page at 37 <http://www.alphalinux.org/>. 38 39config 64BIT 40 def_bool y 41 42config MMU 43 bool 44 default y 45 46config RWSEM_GENERIC_SPINLOCK 47 bool 48 49config RWSEM_XCHGADD_ALGORITHM 50 bool 51 default y 52 53config ARCH_HAS_ILOG2_U32 54 bool 55 default n 56 57config ARCH_HAS_ILOG2_U64 58 bool 59 default n 60 61config GENERIC_CALIBRATE_DELAY 62 bool 63 default y 64 65config ZONE_DMA 66 bool 67 default y 68 69config GENERIC_ISA_DMA 70 bool 71 default y 72 73config PGTABLE_LEVELS 74 int 75 default 3 76 77source "init/Kconfig" 78source "kernel/Kconfig.freezer" 79 80config AUDIT_ARCH 81 bool 82 83menu "System setup" 84 85choice 86 prompt "Alpha system type" 87 default ALPHA_GENERIC 88 ---help--- 89 This is the system type of your hardware. A "generic" kernel will 90 run on any supported Alpha system. However, if you configure a 91 kernel for your specific system, it will be faster and smaller. 92 93 To find out what type of Alpha system you have, you may want to 94 check out the Linux/Alpha FAQ, accessible on the WWW from 95 <http://www.alphalinux.org/>. In summary: 96 97 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366 98 Alpha-XL XL-233, XL-266 99 AlphaBook1 Alpha laptop 100 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400 101 Cabriolet AlphaPC64, AlphaPCI64 102 DP264 DP264 / DS20 / ES40 / DS10 / DS10L 103 EB164 EB164 21164 evaluation board 104 EB64+ EB64+ 21064 evaluation board 105 EB66 EB66 21066 evaluation board 106 EB66+ EB66+ 21066 evaluation board 107 Jensen DECpc 150, DEC 2000 models 300, 500 108 LX164 AlphaPC164-LX 109 Lynx AS 2100A 110 Miata Personal Workstation 433/500/600 a/au 111 Marvel AlphaServer ES47 / ES80 / GS1280 112 Mikasa AS 1000 113 Noname AXPpci33, UDB (Multia) 114 Noritake AS 1000A, AS 600A, AS 800 115 PC164 AlphaPC164 116 Rawhide AS 1200, AS 4000, AS 4100 117 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX 118 SX164 AlphaPC164-SX 119 Sable AS 2000, AS 2100 120 Shark DS 20L 121 Takara Takara (OEM) 122 Titan AlphaServer ES45 / DS25 / DS15 123 Wildfire AlphaServer GS 40/80/160/320 124 125 If you don't know what to do, choose "generic". 126 127config ALPHA_GENERIC 128 bool "Generic" 129 depends on TTY 130 help 131 A generic kernel will run on all supported Alpha hardware. 132 133config ALPHA_ALCOR 134 bool "Alcor/Alpha-XLT" 135 help 136 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data 137 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O 138 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM 139 controller (256-bit memory bus) and a PCI interface. It also does 140 all the work required to support an external Bcache and to maintain 141 memory coherence when a PCI device DMAs into (or out of) memory. 142 143config ALPHA_XL 144 bool "Alpha-XL" 145 help 146 XL-233 and XL-266-based Alpha systems. 147 148config ALPHA_BOOK1 149 bool "AlphaBook1" 150 help 151 Dec AlphaBook1/Burns Alpha-based laptops. 152 153config ALPHA_AVANTI_CH 154 bool "Avanti" 155 156config ALPHA_CABRIOLET 157 bool "Cabriolet" 158 help 159 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now 160 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA 161 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in 162 Bcache SIMMs. Requires power supply with 3.3V output. 163 164config ALPHA_DP264 165 bool "DP264" 166 help 167 Various 21264 systems with the tsunami core logic chipset. 168 API Networks: 264DP, UP2000(+), CS20; 169 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40. 170 171config ALPHA_EB164 172 bool "EB164" 173 help 174 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has 175 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is 176 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in 177 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD, 178 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized 179 motherboard. Requires power supply with 3.3V output. 180 181config ALPHA_EB64P_CH 182 bool "EB64+" 183 184config ALPHA_EB66 185 bool "EB66" 186 help 187 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is 188 identical to EB64+. Baby PC-AT size. Runs from standard PC power 189 supply. The EB66 schematic was published as a marketing poster 190 advertising the 21066 as "the first microprocessor in the world with 191 embedded PCI". 192 193config ALPHA_EB66P 194 bool "EB66+" 195 help 196 Later variant of the EB66 board. 197 198config ALPHA_EIGER 199 bool "Eiger" 200 help 201 Apparently an obscure OEM single-board computer based on the 202 Typhoon/Tsunami chipset family. Information on it is scanty. 203 204config ALPHA_JENSEN 205 bool "Jensen" 206 depends on BROKEN 207 select DMA_DIRECT_OPS 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 ALPHA_NONAME 343 bool 344 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH 345 default y 346 help 347 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia 348 UDB). This design was produced by Digital's Technical OEM (TOEM) 349 group. It uses the 21066 processor running at 166MHz or 233MHz. It 350 is a baby-AT size, and runs from a standard PC power supply. It has 351 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are 352 2 versions, with either PS/2 or large DIN connectors for the 353 keyboard. 354 355config ALPHA_EV4 356 bool 357 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 358 default y if !ALPHA_LYNX 359 360config ALPHA_LCA 361 bool 362 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K 363 default y 364 365config ALPHA_APECS 366 bool 367 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL 368 default y 369 370config ALPHA_EB64P 371 bool 372 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH 373 default y 374 help 375 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA, 376 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs. 377 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI 378 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style), 379 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size. 380 Runs from standard PC power supply. 381 382config ALPHA_EV5 383 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX 384 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 385 386config ALPHA_EV4 387 bool 388 default y if ALPHA_LYNX && !ALPHA_EV5 389 390config ALPHA_CIA 391 bool 392 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 393 default y 394 395config ALPHA_EV56 396 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR 397 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA 398 399config ALPHA_EV56 400 prompt "EV56 CPU (speed >= 333MHz)?" 401 depends on ALPHA_NORITAKE || ALPHA_PRIMO 402 403config ALPHA_EV56 404 prompt "EV56 CPU (speed >= 400MHz)?" 405 depends on ALPHA_RAWHIDE 406 407config ALPHA_PRIMO 408 bool "EV5 CPU daughtercard (model 5/xxx)?" 409 depends on ALPHA_NORITAKE || ALPHA_MIKASA 410 help 411 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx. 412 413config ALPHA_GAMMA 414 bool "EV5 CPU(s) (model 5/xxx)?" 415 depends on ALPHA_SABLE 416 help 417 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx. 418 419config ALPHA_GAMMA 420 bool 421 depends on ALPHA_LYNX 422 default y 423 424config ALPHA_T2 425 bool 426 depends on ALPHA_SABLE || ALPHA_LYNX 427 default y 428 429config ALPHA_PYXIS 430 bool 431 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN 432 default y 433 434config ALPHA_EV6 435 bool 436 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL 437 default y 438 439config ALPHA_TSUNAMI 440 bool 441 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER 442 default y 443 444config ALPHA_EV67 445 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER 446 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL 447 help 448 Is this a machine based on the EV67 core? If in doubt, select N here 449 and the machine will be treated as an EV6. 450 451config ALPHA_MCPCIA 452 bool 453 depends on ALPHA_RAWHIDE 454 default y 455 456config ALPHA_POLARIS 457 bool 458 depends on ALPHA_RX164 459 default y 460 461config ALPHA_IRONGATE 462 bool 463 depends on ALPHA_NAUTILUS 464 default y 465 466config GENERIC_HWEIGHT 467 bool 468 default y if !ALPHA_EV67 469 470config ALPHA_AVANTI 471 bool 472 depends on ALPHA_XL || ALPHA_AVANTI_CH 473 default y 474 help 475 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based 476 Alphas. Info at 477 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>. 478 479config ALPHA_BROKEN_IRQ_MASK 480 bool 481 depends on ALPHA_GENERIC || ALPHA_PC164 482 default y 483 484config VGA_HOSE 485 bool 486 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) 487 default y 488 help 489 Support VGA on an arbitrary hose; needed for several platforms 490 which always have multiple hoses, and whose consoles support it. 491 492 493config ALPHA_QEMU 494 bool "Run under QEMU emulation" 495 depends on !ALPHA_GENERIC 496 ---help--- 497 Assume the presence of special features supported by QEMU PALcode 498 that reduce the overhead of system emulation. 499 500 Generic kernels will auto-detect QEMU. But when building a 501 system-specific kernel, the assumption is that we want to 502 eliminate as many runtime tests as possible. 503 504 If unsure, say N. 505 506 507config ALPHA_SRM 508 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 509 depends on TTY 510 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 511 ---help--- 512 There are two different types of booting firmware on Alphas: SRM, 513 which is command line driven, and ARC, which uses menus and arrow 514 keys. Details about the Linux/Alpha booting process are contained in 515 the Linux/Alpha FAQ, accessible on the WWW from 516 <http://www.alphalinux.org/>. 517 518 The usual way to load Linux on an Alpha machine is to use MILO 519 (a bootloader that lets you pass command line parameters to the 520 kernel just like lilo does for the x86 architecture) which can be 521 loaded either from ARC or can be installed directly as a permanent 522 firmware replacement from floppy (which requires changing a certain 523 jumper on the motherboard). If you want to do either of these, say N 524 here. If MILO doesn't work on your system (true for Jensen 525 motherboards), you can bypass it altogether and boot Linux directly 526 from an SRM console; say Y here in order to do that. Note that you 527 won't be able to boot from an IDE disk using SRM. 528 529 If unsure, say N. 530 531config EISA 532 bool 533 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE 534 default y 535 536config ARCH_MAY_HAVE_PC_FDC 537 def_bool y 538 539config SMP 540 bool "Symmetric multi-processing support" 541 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL 542 ---help--- 543 This enables support for systems with more than one CPU. If you have 544 a system with only one CPU, say N. If you have a system with more 545 than one CPU, say Y. 546 547 If you say N here, the kernel will run on uni- and multiprocessor 548 machines, but will use only one CPU of a multiprocessor machine. If 549 you say Y here, the kernel will run on many, but not all, 550 uniprocessor machines. On a uniprocessor machine, the kernel 551 will run faster if you say N here. 552 553 See also the SMP-HOWTO available at 554 <http://www.tldp.org/docs.html#howto>. 555 556 If you don't know what to do here, say N. 557 558config NR_CPUS 559 int "Maximum number of CPUs (2-32)" 560 range 2 32 561 depends on SMP 562 default "32" if ALPHA_GENERIC || ALPHA_MARVEL 563 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL 564 help 565 MARVEL support can handle a maximum of 32 CPUs, all the others 566 with working support have a maximum of 4 CPUs. 567 568config ARCH_DISCONTIGMEM_ENABLE 569 bool "Discontiguous Memory Support" 570 help 571 Say Y to support efficient handling of discontiguous physical memory, 572 for architectures which are either NUMA (Non-Uniform Memory Access) 573 or have huge holes in the physical address space for other reasons. 574 See <file:Documentation/vm/numa.rst> for more. 575 576source "mm/Kconfig" 577 578config NUMA 579 bool "NUMA Support (EXPERIMENTAL)" 580 depends on DISCONTIGMEM && BROKEN 581 help 582 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 583 Access). This option is for configuring high-end multiprocessor 584 server machines. If in doubt, say N. 585 586config ALPHA_WTINT 587 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC 588 default y if ALPHA_QEMU 589 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA) 590 default n if !ALPHA_SRM && !ALPHA_GENERIC 591 default y if SMP 592 ---help--- 593 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU 594 to sleep until the next interrupt. This may reduce the power 595 consumed, and the heat produced by the computer. However, it has 596 the side effect of making the cycle counter unreliable as a timing 597 device across the sleep. 598 599 For emulation under QEMU, definitely say Y here, as we have other 600 mechanisms for measuring time than the cycle counter. 601 602 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running 603 MILO, sleep mode is not supported so you might as well say N here. 604 605 For SMP systems we cannot use the cycle counter for timing anyway, 606 so you might as well say Y here. 607 608 If unsure, say N. 609 610config NODES_SHIFT 611 int 612 default "7" 613 depends on NEED_MULTIPLE_NODES 614 615# LARGE_VMALLOC is racy, if you *really* need it then fix it first 616config ALPHA_LARGE_VMALLOC 617 bool 618 ---help--- 619 Process creation and other aspects of virtual memory management can 620 be streamlined if we restrict the kernel to one PGD for all vmalloc 621 allocations. This equates to about 8GB. 622 623 Under normal circumstances, this is so far and above what is needed 624 as to be laughable. However, there are certain applications (such 625 as benchmark-grade in-kernel web serving) that can make use of as 626 much vmalloc space as is available. 627 628 Say N unless you know you need gobs and gobs of vmalloc space. 629 630config VERBOSE_MCHECK 631 bool "Verbose Machine Checks" 632 633config VERBOSE_MCHECK_ON 634 int "Verbose Printing Mode (0=off, 1=on, 2=all)" 635 depends on VERBOSE_MCHECK 636 default 1 637 ---help--- 638 This option allows the default printing mode to be set, and then 639 possibly overridden by a boot command argument. 640 641 For example, if one wanted the option of printing verbose 642 machine checks, but wanted the default to be as if verbose 643 machine check printing was turned off, then one would choose 644 the printing mode to be 0. Then, upon reboot, one could add 645 the boot command line "verbose_mcheck=1" to get the normal 646 verbose machine check printing, or "verbose_mcheck=2" to get 647 the maximum information available. 648 649 Take the default (1) unless you want more control or more info. 650 651choice 652 prompt "Timer interrupt frequency (HZ)?" 653 default HZ_128 if ALPHA_QEMU 654 default HZ_1200 if ALPHA_RAWHIDE 655 default HZ_1024 656 ---help--- 657 The frequency at which timer interrupts occur. A high frequency 658 minimizes latency, whereas a low frequency minimizes overhead of 659 process accounting. The later effect is especially significant 660 when being run under QEMU. 661 662 Note that some Alpha hardware cannot change the interrupt frequency 663 of the timer. If unsure, say 1024 (or 1200 for Rawhide). 664 665 config HZ_32 666 bool "32 Hz" 667 config HZ_64 668 bool "64 Hz" 669 config HZ_128 670 bool "128 Hz" 671 config HZ_256 672 bool "256 Hz" 673 config HZ_1024 674 bool "1024 Hz" 675 config HZ_1200 676 bool "1200 Hz" 677endchoice 678 679config HZ 680 int 681 default 32 if HZ_32 682 default 64 if HZ_64 683 default 128 if HZ_128 684 default 256 if HZ_256 685 default 1200 if HZ_1200 686 default 1024 687 688source "drivers/pci/Kconfig" 689source "drivers/eisa/Kconfig" 690 691source "drivers/pcmcia/Kconfig" 692 693config SRM_ENV 694 tristate "SRM environment through procfs" 695 depends on PROC_FS 696 ---help--- 697 If you enable this option, a subdirectory inside /proc called 698 /proc/srm_environment will give you access to the all important 699 SRM environment variables (those which have a name) and also 700 to all others (by their internal number). 701 702 SRM is something like a BIOS for Alpha machines. There are some 703 other such BIOSes, like AlphaBIOS, which this driver cannot 704 support (hey, that's not SRM!). 705 706 Despite the fact that this driver doesn't work on all Alphas (but 707 only on those which have SRM as their firmware), it's save to 708 build it even if your particular machine doesn't know about SRM 709 (or if you intend to compile a generic kernel). It will simply 710 not create those subdirectory in /proc (and give you some warning, 711 of course). 712 713 This driver is also available as a module and will be called 714 srm_env then. 715 716source "fs/Kconfig.binfmt" 717 718endmenu 719 720source "net/Kconfig" 721 722source "drivers/Kconfig" 723 724source "fs/Kconfig" 725 726source "arch/alpha/Kconfig.debug" 727 728# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig 729# but we also need it if VGA_HOSE is set 730config DUMMY_CONSOLE 731 bool 732 depends on VGA_HOSE 733 default y 734 735source "security/Kconfig" 736 737source "crypto/Kconfig" 738 739source "lib/Kconfig" 740 741