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/>.
21 config RWSEM_GENERIC_SPINLOCK
24 config RWSEM_XCHGADD_ALGORITHM
28 config ARCH_HAS_ILOG2_U32
32 config ARCH_HAS_ILOG2_U64
36 config GENERIC_FIND_NEXT_BIT
40 config GENERIC_CALIBRATE_DELAY
48 config GENERIC_ISA_DMA
56 config GENERIC_HARDIRQS
60 config GENERIC_IRQ_PROBE
64 config AUTO_IRQ_AFFINITY
75 prompt "Alpha system type"
78 This is the system type of your hardware. A "generic" kernel will
79 run on any supported Alpha system. However, if you configure a
80 kernel for your specific system, it will be faster and smaller.
82 To find out what type of Alpha system you have, you may want to
83 check out the Linux/Alpha FAQ, accessible on the WWW from
84 <http://www.alphalinux.org/>. In summary:
86 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
87 Alpha-XL XL-233, XL-266
88 AlphaBook1 Alpha laptop
89 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
90 Cabriolet AlphaPC64, AlphaPCI64
91 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
92 EB164 EB164 21164 evaluation board
93 EB64+ EB64+ 21064 evaluation board
94 EB66 EB66 21066 evaluation board
95 EB66+ EB66+ 21066 evaluation board
96 Jensen DECpc 150, DEC 2000 models 300, 500
99 Miata Personal Workstation 433/500/600 a/au
100 Marvel AlphaServer ES47 / ES80 / GS1280
102 Noname AXPpci33, UDB (Multia)
103 Noritake AS 1000A, AS 600A, AS 800
105 Rawhide AS 1200, AS 4000, AS 4100
106 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
108 Sable AS 2000, AS 2100
111 Titan AlphaServer ES45 / DS25 / DS15
112 Wildfire AlphaServer GS 40/80/160/320
114 If you don't know what to do, choose "generic".
119 A generic kernel will run on all supported Alpha hardware.
122 bool "Alcor/Alpha-XLT"
124 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
125 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
126 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
127 controller (256-bit memory bus) and a PCI interface. It also does
128 all the work required to support an external Bcache and to maintain
129 memory coherence when a PCI device DMAs into (or out of) memory.
134 XL-233 and XL-266-based Alpha systems.
139 Dec AlphaBook1/Burns Alpha-based laptops.
141 config ALPHA_AVANTI_CH
144 config ALPHA_CABRIOLET
147 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
148 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
149 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
150 Bcache SIMMs. Requires power supply with 3.3V output.
155 Various 21264 systems with the tsunami core logic chipset.
156 API Networks: 264DP, UP2000(+), CS20;
157 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
162 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
163 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
164 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
165 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
166 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
167 motherboard. Requires power supply with 3.3V output.
169 config ALPHA_EB64P_CH
175 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
176 identical to EB64+. Baby PC-AT size. Runs from standard PC power
177 supply. The EB66 schematic was published as a marketing poster
178 advertising the 21066 as "the first microprocessor in the world with
184 Later variant of the EB66 board.
189 Apparently an obscure OEM single-board computer based on the
190 Typhoon/Tsunami chipset family. Information on it is scanty.
195 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
196 of the first-generation Alpha systems. A number of these systems
197 seem to be available on the second- hand market. The Jensen is a
198 floor-standing tower system which originally used a 150MHz 21064 It
199 used programmable logic to interface a 486 EISA I/O bridge to the
205 A technical overview of this board is available at
206 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
211 AlphaServer 2100A-based systems.
216 AlphaServer ES47 / ES80 / GS1280 based on EV7.
221 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
222 or 600au). There is an Installation HOWTO for this hardware at
223 <http://eijk.homelinux.org/~stefan/miata.html>.
228 AlphaServer 1000-based Alpha systems.
230 config ALPHA_NAUTILUS
233 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
235 config ALPHA_NONAME_CH
238 config ALPHA_NORITAKE
241 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
253 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
255 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
260 Samsung APC164UX. There is a page on known problems and workarounds
261 at <http://www.alphalinux.org/faq/FAQ-11.html>.
272 Digital AlphaServer 2000 and 2100-based systems.
280 Alpha 11164-based OEM single-board computer.
285 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
287 config ALPHA_WILDFIRE
290 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
294 # clear all implied options (don't want default values for those):
295 # Most of these machines have ISA slots; not exactly sure which don't,
296 # and this doesn't activate hordes of code, so do it always.
301 Find out whether you have ISA slots on your motherboard. ISA is the
302 name of a bus system, i.e. the way the CPU talks to the other stuff
303 inside your box. Other bus systems are PCI, EISA, MicroChannel
304 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
305 newer boards don't support it. If you have ISA, say Y, otherwise N.
313 depends on !ALPHA_JENSEN
316 Find out whether you have a PCI motherboard. PCI is the name of a
317 bus system, i.e. the way the CPU talks to the other stuff inside
318 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
319 VESA. If you have PCI, say Y, otherwise N.
321 The PCI-HOWTO, available from
322 <http://www.tldp.org/docs.html#howto>, contains valuable
323 information about which PCI hardware does work under Linux and which
333 config ALPHA_CORE_AGP
335 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
340 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
343 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
344 UDB). This design was produced by Digital's Technical OEM (TOEM)
345 group. It uses the 21066 processor running at 166MHz or 233MHz. It
346 is a baby-AT size, and runs from a standard PC power supply. It has
347 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
348 2 versions, with either PS/2 or large DIN connectors for the
353 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
354 default y if !ALPHA_LYNX
358 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
363 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
368 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
371 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
372 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
373 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
374 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
375 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
376 Runs from standard PC power supply.
379 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
380 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
384 default y if ALPHA_LYNX && !ALPHA_EV5
388 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
392 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
393 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
396 prompt "EV56 CPU (speed >= 333MHz)?"
397 depends on ALPHA_NORITAKE || ALPHA_PRIMO
400 prompt "EV56 CPU (speed >= 400MHz)?"
401 depends on ALPHA_RAWHIDE
404 bool "EV5 CPU daughtercard (model 5/xxx)?"
405 depends on ALPHA_NORITAKE || ALPHA_MIKASA
407 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
410 bool "EV5 CPU(s) (model 5/xxx)?"
411 depends on ALPHA_SABLE
413 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
417 depends on ALPHA_LYNX
422 depends on ALPHA_SABLE || ALPHA_LYNX
427 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
432 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
437 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
441 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
442 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
444 Is this a machine based on the EV67 core? If in doubt, select N here
445 and the machine will be treated as an EV6.
449 depends on ALPHA_MARVEL
454 depends on ALPHA_RAWHIDE
459 depends on ALPHA_RX164
462 config ALPHA_IRONGATE
464 depends on ALPHA_NAUTILUS
467 config GENERIC_HWEIGHT
469 default y if !ALPHA_EV67
473 depends on ALPHA_XL || ALPHA_AVANTI_CH
476 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
478 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
480 config ALPHA_BROKEN_IRQ_MASK
482 depends on ALPHA_GENERIC || ALPHA_PC164
487 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
490 Support VGA on an arbitrary hose; needed for several platforms
491 which always have multiple hoses, and whose consoles support it.
495 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
496 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
498 There are two different types of booting firmware on Alphas: SRM,
499 which is command line driven, and ARC, which uses menus and arrow
500 keys. Details about the Linux/Alpha booting process are contained in
501 the Linux/Alpha FAQ, accessible on the WWW from
502 <http://www.alphalinux.org/>.
504 The usual way to load Linux on an Alpha machine is to use MILO
505 (a bootloader that lets you pass command line parameters to the
506 kernel just like lilo does for the x86 architecture) which can be
507 loaded either from ARC or can be installed directly as a permanent
508 firmware replacement from floppy (which requires changing a certain
509 jumper on the motherboard). If you want to do either of these, say N
510 here. If MILO doesn't work on your system (true for Jensen
511 motherboards), you can bypass it altogether and boot Linux directly
512 from an SRM console; say Y here in order to do that. Note that you
513 won't be able to boot from an IDE disk using SRM.
519 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
522 config ARCH_MAY_HAVE_PC_FDC
526 bool "Symmetric multi-processing support"
527 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
529 This enables support for systems with more than one CPU. If you have
530 a system with only one CPU, like most personal computers, say N. If
531 you have a system with more than one CPU, say Y.
533 If you say N here, the kernel will run on single and multiprocessor
534 machines, but will use only one CPU of a multiprocessor machine. If
535 you say Y here, the kernel will run on many, but not all,
536 singleprocessor machines. On a singleprocessor machine, the kernel
537 will run faster if you say N here.
539 See also the <file:Documentation/smp.txt>, and the SMP-HOWTO
540 available at <http://www.tldp.org/docs.html#howto>.
542 If you don't know what to do here, say N.
550 int "Maximum number of CPUs (2-32)"
553 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
554 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
556 MARVEL support can handle a maximum of 32 CPUs, all the others
557 with working support have a maximum of 4 CPUs.
559 config ARCH_DISCONTIGMEM_ENABLE
560 bool "Discontiguous Memory Support (EXPERIMENTAL)"
561 depends on EXPERIMENTAL
563 Say Y to support efficient handling of discontiguous physical memory,
564 for architectures which are either NUMA (Non-Uniform Memory Access)
565 or have huge holes in the physical address space for other reasons.
566 See <file:Documentation/vm/numa> for more.
571 bool "NUMA Support (EXPERIMENTAL)"
572 depends on DISCONTIGMEM && BROKEN
574 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
575 Access). This option is for configuring high-end multiprocessor
576 server machines. If in doubt, say N.
581 depends on NEED_MULTIPLE_NODES
583 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
584 config ALPHA_LARGE_VMALLOC
587 Process creation and other aspects of virtual memory management can
588 be streamlined if we restrict the kernel to one PGD for all vmalloc
589 allocations. This equates to about 8GB.
591 Under normal circumstances, this is so far and above what is needed
592 as to be laughable. However, there are certain applications (such
593 as benchmark-grade in-kernel web serving) that can make use of as
594 much vmalloc space as is available.
596 Say N unless you know you need gobs and gobs of vmalloc space.
598 config VERBOSE_MCHECK
599 bool "Verbose Machine Checks"
601 config VERBOSE_MCHECK_ON
602 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
603 depends on VERBOSE_MCHECK
606 This option allows the default printing mode to be set, and then
607 possibly overridden by a boot command argument.
609 For example, if one wanted the option of printing verbose
610 machine checks, but wanted the default to be as if verbose
611 machine check printing was turned off, then one would choose
612 the printing mode to be 0. Then, upon reboot, one could add
613 the boot command line "verbose_mcheck=1" to get the normal
614 verbose machine check printing, or "verbose_mcheck=2" to get
615 the maximum information available.
617 Take the default (1) unless you want more control or more info.
619 source "drivers/pci/Kconfig"
620 source "drivers/eisa/Kconfig"
622 source "drivers/pcmcia/Kconfig"
625 tristate "SRM environment through procfs"
628 If you enable this option, a subdirectory inside /proc called
629 /proc/srm_environment will give you access to the all important
630 SRM environment variables (those which have a name) and also
631 to all others (by their internal number).
633 SRM is something like a BIOS for Alpha machines. There are some
634 other such BIOSes, like AlphaBIOS, which this driver cannot
635 support (hey, that's not SRM!).
637 Despite the fact that this driver doesn't work on all Alphas (but
638 only on those which have SRM as their firmware), it's save to
639 build it even if your particular machine doesn't know about SRM
640 (or if you intend to compile a generic kernel). It will simply
641 not create those subdirectory in /proc (and give you some warning,
644 This driver is also available as a module and will be called
647 source "fs/Kconfig.binfmt"
653 source "drivers/Kconfig"
657 source "kernel/Kconfig.instrumentation"
659 source "arch/alpha/Kconfig.debug"
661 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
662 # but we also need it if VGA_HOSE is set
668 source "security/Kconfig"
670 source "crypto/Kconfig"