2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
10 The Alpha is a 64-bit general-purpose processor designed and
11 marketed by the Digital Equipment Corporation of blessed memory,
12 now Hewlett-Packard. The Alpha Linux project has a home page at
13 <http://www.alphalinux.org/>.
22 config RWSEM_GENERIC_SPINLOCK
25 config RWSEM_XCHGADD_ALGORITHM
29 config ARCH_HAS_ILOG2_U32
33 config ARCH_HAS_ILOG2_U64
37 config GENERIC_FIND_NEXT_BIT
41 config GENERIC_CALIBRATE_DELAY
49 config GENERIC_ISA_DMA
57 config GENERIC_HARDIRQS
61 config GENERIC_IRQ_PROBE
65 config AUTO_IRQ_AFFINITY
70 config ARCH_SUPPORTS_AOUT
79 prompt "Alpha system type"
82 This is the system type of your hardware. A "generic" kernel will
83 run on any supported Alpha system. However, if you configure a
84 kernel for your specific system, it will be faster and smaller.
86 To find out what type of Alpha system you have, you may want to
87 check out the Linux/Alpha FAQ, accessible on the WWW from
88 <http://www.alphalinux.org/>. In summary:
90 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
91 Alpha-XL XL-233, XL-266
92 AlphaBook1 Alpha laptop
93 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
94 Cabriolet AlphaPC64, AlphaPCI64
95 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
96 EB164 EB164 21164 evaluation board
97 EB64+ EB64+ 21064 evaluation board
98 EB66 EB66 21066 evaluation board
99 EB66+ EB66+ 21066 evaluation board
100 Jensen DECpc 150, DEC 2000 models 300, 500
103 Miata Personal Workstation 433/500/600 a/au
104 Marvel AlphaServer ES47 / ES80 / GS1280
106 Noname AXPpci33, UDB (Multia)
107 Noritake AS 1000A, AS 600A, AS 800
109 Rawhide AS 1200, AS 4000, AS 4100
110 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
112 Sable AS 2000, AS 2100
115 Titan AlphaServer ES45 / DS25 / DS15
116 Wildfire AlphaServer GS 40/80/160/320
118 If you don't know what to do, choose "generic".
123 A generic kernel will run on all supported Alpha hardware.
126 bool "Alcor/Alpha-XLT"
128 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
129 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
130 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
131 controller (256-bit memory bus) and a PCI interface. It also does
132 all the work required to support an external Bcache and to maintain
133 memory coherence when a PCI device DMAs into (or out of) memory.
138 XL-233 and XL-266-based Alpha systems.
143 Dec AlphaBook1/Burns Alpha-based laptops.
145 config ALPHA_AVANTI_CH
148 config ALPHA_CABRIOLET
151 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
152 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
153 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
154 Bcache SIMMs. Requires power supply with 3.3V output.
159 Various 21264 systems with the tsunami core logic chipset.
160 API Networks: 264DP, UP2000(+), CS20;
161 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
166 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
167 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
168 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
169 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
170 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
171 motherboard. Requires power supply with 3.3V output.
173 config ALPHA_EB64P_CH
179 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
180 identical to EB64+. Baby PC-AT size. Runs from standard PC power
181 supply. The EB66 schematic was published as a marketing poster
182 advertising the 21066 as "the first microprocessor in the world with
188 Later variant of the EB66 board.
193 Apparently an obscure OEM single-board computer based on the
194 Typhoon/Tsunami chipset family. Information on it is scanty.
199 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
200 of the first-generation Alpha systems. A number of these systems
201 seem to be available on the second- hand market. The Jensen is a
202 floor-standing tower system which originally used a 150MHz 21064 It
203 used programmable logic to interface a 486 EISA I/O bridge to the
209 A technical overview of this board is available at
210 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
215 AlphaServer 2100A-based systems.
220 AlphaServer ES47 / ES80 / GS1280 based on EV7.
225 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
226 or 600au). There is an Installation HOWTO for this hardware at
227 <http://eijk.homelinux.org/~stefan/miata.html>.
232 AlphaServer 1000-based Alpha systems.
234 config ALPHA_NAUTILUS
237 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
239 config ALPHA_NONAME_CH
242 config ALPHA_NORITAKE
245 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
257 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
259 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
264 Samsung APC164UX. There is a page on known problems and workarounds
265 at <http://www.alphalinux.org/faq/FAQ-11.html>.
276 Digital AlphaServer 2000 and 2100-based systems.
284 Alpha 11164-based OEM single-board computer.
289 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
291 config ALPHA_WILDFIRE
294 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
298 # clear all implied options (don't want default values for those):
299 # Most of these machines have ISA slots; not exactly sure which don't,
300 # and this doesn't activate hordes of code, so do it always.
305 Find out whether you have ISA slots on your motherboard. ISA is the
306 name of a bus system, i.e. the way the CPU talks to the other stuff
307 inside your box. Other bus systems are PCI, EISA, MicroChannel
308 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
309 newer boards don't support it. If you have ISA, say Y, otherwise N.
317 depends on !ALPHA_JENSEN
320 Find out whether you have a PCI motherboard. PCI is the name of a
321 bus system, i.e. the way the CPU talks to the other stuff inside
322 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
323 VESA. If you have PCI, say Y, otherwise N.
332 config ALPHA_CORE_AGP
334 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
339 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
342 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
343 UDB). This design was produced by Digital's Technical OEM (TOEM)
344 group. It uses the 21066 processor running at 166MHz or 233MHz. It
345 is a baby-AT size, and runs from a standard PC power supply. It has
346 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
347 2 versions, with either PS/2 or large DIN connectors for the
352 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
353 default y if !ALPHA_LYNX
357 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
362 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
367 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
370 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
371 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
372 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
373 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
374 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
375 Runs from standard PC power supply.
378 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
379 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
383 default y if ALPHA_LYNX && !ALPHA_EV5
387 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
391 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
392 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
395 prompt "EV56 CPU (speed >= 333MHz)?"
396 depends on ALPHA_NORITAKE || ALPHA_PRIMO
399 prompt "EV56 CPU (speed >= 400MHz)?"
400 depends on ALPHA_RAWHIDE
403 bool "EV5 CPU daughtercard (model 5/xxx)?"
404 depends on ALPHA_NORITAKE || ALPHA_MIKASA
406 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
409 bool "EV5 CPU(s) (model 5/xxx)?"
410 depends on ALPHA_SABLE
412 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
416 depends on ALPHA_LYNX
421 depends on ALPHA_SABLE || ALPHA_LYNX
426 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
431 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
436 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
440 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
441 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
443 Is this a machine based on the EV67 core? If in doubt, select N here
444 and the machine will be treated as an EV6.
448 depends on ALPHA_MARVEL
453 depends on ALPHA_RAWHIDE
458 depends on ALPHA_RX164
461 config ALPHA_IRONGATE
463 depends on ALPHA_NAUTILUS
466 config GENERIC_HWEIGHT
468 default y if !ALPHA_EV67
472 depends on ALPHA_XL || ALPHA_AVANTI_CH
475 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
477 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
479 config ALPHA_BROKEN_IRQ_MASK
481 depends on ALPHA_GENERIC || ALPHA_PC164
486 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
489 Support VGA on an arbitrary hose; needed for several platforms
490 which always have multiple hoses, and whose consoles support it.
494 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
495 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
497 There are two different types of booting firmware on Alphas: SRM,
498 which is command line driven, and ARC, which uses menus and arrow
499 keys. Details about the Linux/Alpha booting process are contained in
500 the Linux/Alpha FAQ, accessible on the WWW from
501 <http://www.alphalinux.org/>.
503 The usual way to load Linux on an Alpha machine is to use MILO
504 (a bootloader that lets you pass command line parameters to the
505 kernel just like lilo does for the x86 architecture) which can be
506 loaded either from ARC or can be installed directly as a permanent
507 firmware replacement from floppy (which requires changing a certain
508 jumper on the motherboard). If you want to do either of these, say N
509 here. If MILO doesn't work on your system (true for Jensen
510 motherboards), you can bypass it altogether and boot Linux directly
511 from an SRM console; say Y here in order to do that. Note that you
512 won't be able to boot from an IDE disk using SRM.
518 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
521 config ARCH_MAY_HAVE_PC_FDC
525 bool "Symmetric multi-processing support"
526 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
528 This enables support for systems with more than one CPU. If you have
529 a system with only one CPU, like most personal computers, say N. If
530 you have a system with more than one CPU, say Y.
532 If you say N here, the kernel will run on single and multiprocessor
533 machines, but will use only one CPU of a multiprocessor machine. If
534 you say Y here, the kernel will run on many, but not all,
535 singleprocessor machines. On a singleprocessor machine, the kernel
536 will run faster if you say N here.
538 See also the SMP-HOWTO available at
539 <http://www.tldp.org/docs.html#howto>.
541 If you don't know what to do here, say N.
549 int "Maximum number of CPUs (2-32)"
552 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
553 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
555 MARVEL support can handle a maximum of 32 CPUs, all the others
556 with working support have a maximum of 4 CPUs.
558 config ARCH_DISCONTIGMEM_ENABLE
559 bool "Discontiguous Memory Support (EXPERIMENTAL)"
560 depends on EXPERIMENTAL
562 Say Y to support efficient handling of discontiguous physical memory,
563 for architectures which are either NUMA (Non-Uniform Memory Access)
564 or have huge holes in the physical address space for other reasons.
565 See <file:Documentation/vm/numa> for more.
570 bool "NUMA Support (EXPERIMENTAL)"
571 depends on DISCONTIGMEM && BROKEN
573 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
574 Access). This option is for configuring high-end multiprocessor
575 server machines. If in doubt, say N.
580 depends on NEED_MULTIPLE_NODES
582 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
583 config ALPHA_LARGE_VMALLOC
586 Process creation and other aspects of virtual memory management can
587 be streamlined if we restrict the kernel to one PGD for all vmalloc
588 allocations. This equates to about 8GB.
590 Under normal circumstances, this is so far and above what is needed
591 as to be laughable. However, there are certain applications (such
592 as benchmark-grade in-kernel web serving) that can make use of as
593 much vmalloc space as is available.
595 Say N unless you know you need gobs and gobs of vmalloc space.
597 config VERBOSE_MCHECK
598 bool "Verbose Machine Checks"
600 config VERBOSE_MCHECK_ON
601 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
602 depends on VERBOSE_MCHECK
605 This option allows the default printing mode to be set, and then
606 possibly overridden by a boot command argument.
608 For example, if one wanted the option of printing verbose
609 machine checks, but wanted the default to be as if verbose
610 machine check printing was turned off, then one would choose
611 the printing mode to be 0. Then, upon reboot, one could add
612 the boot command line "verbose_mcheck=1" to get the normal
613 verbose machine check printing, or "verbose_mcheck=2" to get
614 the maximum information available.
616 Take the default (1) unless you want more control or more info.
618 source "drivers/pci/Kconfig"
619 source "drivers/eisa/Kconfig"
621 source "drivers/pcmcia/Kconfig"
624 tristate "SRM environment through procfs"
627 If you enable this option, a subdirectory inside /proc called
628 /proc/srm_environment will give you access to the all important
629 SRM environment variables (those which have a name) and also
630 to all others (by their internal number).
632 SRM is something like a BIOS for Alpha machines. There are some
633 other such BIOSes, like AlphaBIOS, which this driver cannot
634 support (hey, that's not SRM!).
636 Despite the fact that this driver doesn't work on all Alphas (but
637 only on those which have SRM as their firmware), it's save to
638 build it even if your particular machine doesn't know about SRM
639 (or if you intend to compile a generic kernel). It will simply
640 not create those subdirectory in /proc (and give you some warning,
643 This driver is also available as a module and will be called
646 source "fs/Kconfig.binfmt"
652 source "drivers/Kconfig"
656 source "arch/alpha/Kconfig.debug"
658 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
659 # but we also need it if VGA_HOSE is set
665 source "security/Kconfig"
667 source "crypto/Kconfig"