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