2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
9 The Alpha is a 64-bit general-purpose processor designed and
10 marketed by the Digital Equipment Corporation of blessed memory,
11 now Hewlett-Packard. The Alpha Linux project has a home page at
12 <http://www.alphalinux.org/>.
24 config RWSEM_GENERIC_SPINLOCK
27 config RWSEM_XCHGADD_ALGORITHM
31 config GENERIC_CALIBRATE_DELAY
35 config GENERIC_ISA_DMA
49 prompt "Alpha system type"
52 This is the system type of your hardware. A "generic" kernel will
53 run on any supported Alpha system. However, if you configure a
54 kernel for your specific system, it will be faster and smaller.
56 To find out what type of Alpha system you have, you may want to
57 check out the Linux/Alpha FAQ, accessible on the WWW from
58 <http://www.alphalinux.org/>. In summary:
60 Alcor/Alpha-XLT AS 600
61 Alpha-XL XL-233, XL-266
62 AlphaBook1 Alpha laptop
63 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
64 Cabriolet AlphaPC64, AlphaPCI64
66 EB164 EB164 21164 evaluation board
67 EB64+ EB64+ 21064 evaluation board
68 EB66 EB66 21066 evaluation board
69 EB66+ EB66+ 21066 evaluation board
70 Jensen DECpc 150, DEC 2000 model 300,
74 Miata Personal Workstation 433a, 433au, 500a,
76 Marvel AlphaServer ES47 / ES80 / GS1280
78 Noname AXPpci33, UDB (Multia)
79 Noritake AS 1000A, AS 600A, AS 800
81 Rawhide AS 1200, AS 4000, AS 4100
82 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
84 Sable AS 2000, AS 2100
87 Titan AlphaServer ES45 / DS25
88 Wildfire AlphaServer GS 40/80/160/320
90 If you don't know what to do, choose "generic".
95 A generic kernel will run on all supported Alpha hardware.
98 bool "Alcor/Alpha-XLT"
100 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
101 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
102 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
103 controller (256-bit memory bus) and a PCI interface. It also does
104 all the work required to support an external Bcache and to maintain
105 memory coherence when a PCI device DMAs into (or out of) memory.
110 XL-233 and XL-266-based Alpha systems.
115 Dec AlphaBook1/Burns Alpha-based laptops.
117 config ALPHA_AVANTI_CH
120 config ALPHA_CABRIOLET
123 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
124 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
125 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
126 Bcache SIMMs. Requires power supply with 3.3V output.
131 Various 21264 systems with the tsunami core logic chipset.
132 API Networks: 264DP, UP2000(+), CS20;
133 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
138 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
139 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
140 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
141 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
142 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
143 motherboard. Requires power supply with 3.3V output.
145 config ALPHA_EB64P_CH
151 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
152 identical to EB64+. Baby PC-AT size. Runs from standard PC power
153 supply. The EB66 schematic was published as a marketing poster
154 advertising the 21066 as "the first microprocessor in the world with
160 Later variant of the EB66 board.
165 Apparently an obscure OEM single-board computer based on the
166 Typhoon/Tsunami chipset family. Information on it is scanty.
171 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
172 of the first-generation Alpha systems. A number of these systems
173 seem to be available on the second- hand market. The Jensen is a
174 floor-standing tower system which originally used a 150MHz 21064 It
175 used programmable logic to interface a 486 EISA I/O bridge to the
181 A technical overview of this board is available at
182 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
187 AlphaServer 2100A-based systems.
192 AlphaServer ES47 / ES80 / GS1280 based on EV7.
197 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
198 or 600au). There is an Installation HOWTO for this hardware at
199 <http://eijk.homelinux.org/~stefan/miata.html>.
204 AlphaServer 1000-based Alpha systems.
206 config ALPHA_NAUTILUS
209 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
211 config ALPHA_NONAME_CH
214 config ALPHA_NORITAKE
217 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
229 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
231 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
236 Samsung APC164UX. There is a page on known problems and workarounds
237 at <http://www.alphalinux.org/faq/FAQ-11.html>.
248 Digital AlphaServer 2000 and 2100-based systems.
256 Alpha 11164-based OEM single-board computer.
261 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
263 config ALPHA_WILDFIRE
266 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
270 # clear all implied options (don't want default values for those):
271 # Most of these machines have ISA slots; not exactly sure which don't,
272 # and this doesn't activate hordes of code, so do it always.
277 Find out whether you have ISA slots on your motherboard. ISA is the
278 name of a bus system, i.e. the way the CPU talks to the other stuff
279 inside your box. Other bus systems are PCI, EISA, MicroChannel
280 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
281 newer boards don't support it. If you have ISA, say Y, otherwise N.
289 depends on !ALPHA_JENSEN
292 Find out whether you have a PCI motherboard. PCI is the name of a
293 bus system, i.e. the way the CPU talks to the other stuff inside
294 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
295 VESA. If you have PCI, say Y, otherwise N.
297 The PCI-HOWTO, available from
298 <http://www.tldp.org/docs.html#howto>, contains valuable
299 information about which PCI hardware does work under Linux and which
306 config ALPHA_CORE_AGP
308 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
313 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
316 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
317 UDB). This design was produced by Digital's Technical OEM (TOEM)
318 group. It uses the 21066 processor running at 166MHz or 233MHz. It
319 is a baby-AT size, and runs from a standard PC power supply. It has
320 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
321 2 versions, with either PS/2 or large DIN connectors for the
326 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
327 default y if !ALPHA_LYNX
331 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
336 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
341 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
344 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
345 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
346 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
347 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
348 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
349 Runs from standard PC power supply.
352 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
353 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
357 default y if ALPHA_LYNX && !ALPHA_EV5
361 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
365 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
366 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
369 prompt "EV56 CPU (speed >= 333MHz)?"
370 depends on ALPHA_NORITAKE && ALPHA_PRIMO
373 prompt "EV56 CPU (speed >= 400MHz)?"
374 depends on ALPHA_RAWHIDE
377 bool "EV5 CPU daughtercard (model 5/xxx)?"
378 depends on ALPHA_NORITAKE || ALPHA_MIKASA
380 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
383 bool "EV5 CPU(s) (model 5/xxx)?"
384 depends on ALPHA_SABLE
386 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
390 depends on ALPHA_LYNX
395 depends on ALPHA_SABLE || ALPHA_LYNX
400 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
405 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
410 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
414 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
415 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
417 Is this a machine based on the EV67 core? If in doubt, select N here
418 and the machine will be treated as an EV6.
422 depends on ALPHA_MARVEL
427 depends on ALPHA_RAWHIDE
432 depends on ALPHA_RX164
435 config ALPHA_IRONGATE
437 depends on ALPHA_NAUTILUS
442 depends on ALPHA_XL || ALPHA_AVANTI_CH
445 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
447 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
449 config ALPHA_BROKEN_IRQ_MASK
451 depends on ALPHA_GENERIC || ALPHA_PC164
455 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
456 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
458 There are two different types of booting firmware on Alphas: SRM,
459 which is command line driven, and ARC, which uses menus and arrow
460 keys. Details about the Linux/Alpha booting process are contained in
461 the Linux/Alpha FAQ, accessible on the WWW from
462 <http://www.alphalinux.org/>.
464 The usual way to load Linux on an Alpha machine is to use MILO
465 (a bootloader that lets you pass command line parameters to the
466 kernel just like lilo does for the x86 architecture) which can be
467 loaded either from ARC or can be installed directly as a permanent
468 firmware replacement from floppy (which requires changing a certain
469 jumper on the motherboard). If you want to do either of these, say N
470 here. If MILO doesn't work on your system (true for Jensen
471 motherboards), you can bypass it altogether and boot Linux directly
472 from an SRM console; say Y here in order to do that. Note that you
473 won't be able to boot from an IDE disk using SRM.
479 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
483 bool "Symmetric multi-processing support"
484 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
486 This enables support for systems with more than one CPU. If you have
487 a system with only one CPU, like most personal computers, say N. If
488 you have a system with more than one CPU, say Y.
490 If you say N here, the kernel will run on single and multiprocessor
491 machines, but will use only one CPU of a multiprocessor machine. If
492 you say Y here, the kernel will run on many, but not all,
493 singleprocessor machines. On a singleprocessor machine, the kernel
494 will run faster if you say N here.
496 See also the <file:Documentation/smp.txt>, and the SMP-HOWTO
497 available at <http://www.tldp.org/docs.html#howto>.
499 If you don't know what to do here, say N.
507 int "Maximum number of CPUs (2-64)"
513 bool "Discontiguous Memory Support (EXPERIMENTAL)"
514 depends on EXPERIMENTAL
516 Say Y to upport efficient handling of discontiguous physical memory,
517 for architectures which are either NUMA (Non-Uniform Memory Access)
518 or have huge holes in the physical address space for other reasons.
519 See <file:Documentation/vm/numa> for more.
522 bool "NUMA Support (EXPERIMENTAL)"
523 depends on DISCONTIGMEM
525 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
526 Access). This option is for configuring high-end multiprocessor
527 server machines. If in doubt, say N.
529 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
530 config ALPHA_LARGE_VMALLOC
533 Process creation and other aspects of virtual memory management can
534 be streamlined if we restrict the kernel to one PGD for all vmalloc
535 allocations. This equates to about 8GB.
537 Under normal circumstances, this is so far and above what is needed
538 as to be laughable. However, there are certain applications (such
539 as benchmark-grade in-kernel web serving) that can make use of as
540 much vmalloc space as is available.
542 Say N unless you know you need gobs and gobs of vmalloc space.
544 config VERBOSE_MCHECK
545 bool "Verbose Machine Checks"
547 config VERBOSE_MCHECK_ON
548 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
549 depends on VERBOSE_MCHECK
552 This option allows the default printing mode to be set, and then
553 possibly overridden by a boot command argument.
555 For example, if one wanted the option of printing verbose
556 machine checks, but wanted the default to be as if verbose
557 machine check printing was turned off, then one would choose
558 the printing mode to be 0. Then, upon reboot, one could add
559 the boot command line "verbose_mcheck=1" to get the normal
560 verbose machine check printing, or "verbose_mcheck=2" to get
561 the maximum information available.
563 Take the default (1) unless you want more control or more info.
565 source "drivers/pci/Kconfig"
566 source "drivers/eisa/Kconfig"
568 source "drivers/pcmcia/Kconfig"
571 tristate "SRM environment through procfs"
574 If you enable this option, a subdirectory inside /proc called
575 /proc/srm_environment will give you access to the all important
576 SRM environment variables (those which have a name) and also
577 to all others (by their internal number).
579 SRM is something like a BIOS for Alpha machines. There are some
580 other such BIOSes, like AlphaBIOS, which this driver cannot
581 support (hey, that's not SRM!).
583 Despite the fact that this driver doesn't work on all Alphas (but
584 only on those which have SRM as their firmware), it's save to
585 build it even if your particular machine doesn't know about SRM
586 (or if you intend to compile a generic kernel). It will simply
587 not create those subdirectory in /proc (and give you some warning,
590 This driver is also available as a module and will be called
593 source "fs/Kconfig.binfmt"
597 source "drivers/Kconfig"
601 source "arch/alpha/oprofile/Kconfig"
603 source "arch/alpha/Kconfig.debug"
605 source "security/Kconfig"
607 source "crypto/Kconfig"