2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
11 The Alpha is a 64-bit general-purpose processor designed and
12 marketed by the Digital Equipment Corporation of blessed memory,
13 now Hewlett-Packard. The Alpha Linux project has a home page at
14 <http://www.alphalinux.org/>.
23 config RWSEM_GENERIC_SPINLOCK
26 config RWSEM_XCHGADD_ALGORITHM
30 config ARCH_HAS_ILOG2_U32
34 config ARCH_HAS_ILOG2_U64
38 config GENERIC_FIND_NEXT_BIT
42 config GENERIC_CALIBRATE_DELAY
50 config GENERIC_ISA_DMA
58 config GENERIC_HARDIRQS
62 config GENERIC_IRQ_PROBE
66 config AUTO_IRQ_AFFINITY
71 config ARCH_SUPPORTS_AOUT
80 prompt "Alpha system type"
83 This is the system type of your hardware. A "generic" kernel will
84 run on any supported Alpha system. However, if you configure a
85 kernel for your specific system, it will be faster and smaller.
87 To find out what type of Alpha system you have, you may want to
88 check out the Linux/Alpha FAQ, accessible on the WWW from
89 <http://www.alphalinux.org/>. In summary:
91 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
92 Alpha-XL XL-233, XL-266
93 AlphaBook1 Alpha laptop
94 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
95 Cabriolet AlphaPC64, AlphaPCI64
96 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
97 EB164 EB164 21164 evaluation board
98 EB64+ EB64+ 21064 evaluation board
99 EB66 EB66 21066 evaluation board
100 EB66+ EB66+ 21066 evaluation board
101 Jensen DECpc 150, DEC 2000 models 300, 500
104 Miata Personal Workstation 433/500/600 a/au
105 Marvel AlphaServer ES47 / ES80 / GS1280
107 Noname AXPpci33, UDB (Multia)
108 Noritake AS 1000A, AS 600A, AS 800
110 Rawhide AS 1200, AS 4000, AS 4100
111 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
113 Sable AS 2000, AS 2100
116 Titan AlphaServer ES45 / DS25 / DS15
117 Wildfire AlphaServer GS 40/80/160/320
119 If you don't know what to do, choose "generic".
124 A generic kernel will run on all supported Alpha hardware.
127 bool "Alcor/Alpha-XLT"
129 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
130 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
131 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
132 controller (256-bit memory bus) and a PCI interface. It also does
133 all the work required to support an external Bcache and to maintain
134 memory coherence when a PCI device DMAs into (or out of) memory.
139 XL-233 and XL-266-based Alpha systems.
144 Dec AlphaBook1/Burns Alpha-based laptops.
146 config ALPHA_AVANTI_CH
149 config ALPHA_CABRIOLET
152 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
153 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
154 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
155 Bcache SIMMs. Requires power supply with 3.3V output.
160 Various 21264 systems with the tsunami core logic chipset.
161 API Networks: 264DP, UP2000(+), CS20;
162 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
167 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
168 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
169 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
170 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
171 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
172 motherboard. Requires power supply with 3.3V output.
174 config ALPHA_EB64P_CH
180 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
181 identical to EB64+. Baby PC-AT size. Runs from standard PC power
182 supply. The EB66 schematic was published as a marketing poster
183 advertising the 21066 as "the first microprocessor in the world with
189 Later variant of the EB66 board.
194 Apparently an obscure OEM single-board computer based on the
195 Typhoon/Tsunami chipset family. Information on it is scanty.
200 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
201 of the first-generation Alpha systems. A number of these systems
202 seem to be available on the second- hand market. The Jensen is a
203 floor-standing tower system which originally used a 150MHz 21064 It
204 used programmable logic to interface a 486 EISA I/O bridge to the
210 A technical overview of this board is available at
211 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
216 AlphaServer 2100A-based systems.
221 AlphaServer ES47 / ES80 / GS1280 based on EV7.
226 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
227 or 600au). There is an Installation HOWTO for this hardware at
228 <http://eijk.homelinux.org/~stefan/miata.html>.
233 AlphaServer 1000-based Alpha systems.
235 config ALPHA_NAUTILUS
238 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
240 config ALPHA_NONAME_CH
243 config ALPHA_NORITAKE
246 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
258 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
260 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
265 Samsung APC164UX. There is a page on known problems and workarounds
266 at <http://www.alphalinux.org/faq/FAQ-11.html>.
277 Digital AlphaServer 2000 and 2100-based systems.
285 Alpha 11164-based OEM single-board computer.
290 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
292 config ALPHA_WILDFIRE
295 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
299 # clear all implied options (don't want default values for those):
300 # Most of these machines have ISA slots; not exactly sure which don't,
301 # and this doesn't activate hordes of code, so do it always.
306 Find out whether you have ISA slots on your motherboard. ISA is the
307 name of a bus system, i.e. the way the CPU talks to the other stuff
308 inside your box. Other bus systems are PCI, EISA, MicroChannel
309 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
310 newer boards don't support it. If you have ISA, say Y, otherwise N.
318 depends on !ALPHA_JENSEN
321 Find out whether you have a PCI motherboard. PCI is the name of a
322 bus system, i.e. the way the CPU talks to the other stuff inside
323 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
324 VESA. If you have PCI, say Y, otherwise N.
336 config ALPHA_CORE_AGP
338 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
343 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
346 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
347 UDB). This design was produced by Digital's Technical OEM (TOEM)
348 group. It uses the 21066 processor running at 166MHz or 233MHz. It
349 is a baby-AT size, and runs from a standard PC power supply. It has
350 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
351 2 versions, with either PS/2 or large DIN connectors for the
356 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
357 default y if !ALPHA_LYNX
361 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
366 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
371 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
374 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
375 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
376 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
377 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
378 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
379 Runs from standard PC power supply.
382 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
383 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
387 default y if ALPHA_LYNX && !ALPHA_EV5
391 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
395 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
396 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
399 prompt "EV56 CPU (speed >= 333MHz)?"
400 depends on ALPHA_NORITAKE || ALPHA_PRIMO
403 prompt "EV56 CPU (speed >= 400MHz)?"
404 depends on ALPHA_RAWHIDE
407 bool "EV5 CPU daughtercard (model 5/xxx)?"
408 depends on ALPHA_NORITAKE || ALPHA_MIKASA
410 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
413 bool "EV5 CPU(s) (model 5/xxx)?"
414 depends on ALPHA_SABLE
416 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
420 depends on ALPHA_LYNX
425 depends on ALPHA_SABLE || ALPHA_LYNX
430 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
435 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
440 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
444 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
445 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
447 Is this a machine based on the EV67 core? If in doubt, select N here
448 and the machine will be treated as an EV6.
452 depends on ALPHA_MARVEL
457 depends on ALPHA_RAWHIDE
462 depends on ALPHA_RX164
465 config ALPHA_IRONGATE
467 depends on ALPHA_NAUTILUS
470 config GENERIC_HWEIGHT
472 default y if !ALPHA_EV67
476 depends on ALPHA_XL || ALPHA_AVANTI_CH
479 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
481 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
483 config ALPHA_BROKEN_IRQ_MASK
485 depends on ALPHA_GENERIC || ALPHA_PC164
490 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
493 Support VGA on an arbitrary hose; needed for several platforms
494 which always have multiple hoses, and whose consoles support it.
498 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
499 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
501 There are two different types of booting firmware on Alphas: SRM,
502 which is command line driven, and ARC, which uses menus and arrow
503 keys. Details about the Linux/Alpha booting process are contained in
504 the Linux/Alpha FAQ, accessible on the WWW from
505 <http://www.alphalinux.org/>.
507 The usual way to load Linux on an Alpha machine is to use MILO
508 (a bootloader that lets you pass command line parameters to the
509 kernel just like lilo does for the x86 architecture) which can be
510 loaded either from ARC or can be installed directly as a permanent
511 firmware replacement from floppy (which requires changing a certain
512 jumper on the motherboard). If you want to do either of these, say N
513 here. If MILO doesn't work on your system (true for Jensen
514 motherboards), you can bypass it altogether and boot Linux directly
515 from an SRM console; say Y here in order to do that. Note that you
516 won't be able to boot from an IDE disk using SRM.
522 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
525 config ARCH_MAY_HAVE_PC_FDC
529 bool "Symmetric multi-processing support"
530 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
532 This enables support for systems with more than one CPU. If you have
533 a system with only one CPU, like most personal computers, say N. If
534 you have a system with more than one CPU, say Y.
536 If you say N here, the kernel will run on single and multiprocessor
537 machines, but will use only one CPU of a multiprocessor machine. If
538 you say Y here, the kernel will run on many, but not all,
539 singleprocessor machines. On a singleprocessor machine, the kernel
540 will run faster if you say N here.
542 See also the SMP-HOWTO available at
543 <http://www.tldp.org/docs.html#howto>.
545 If you don't know what to do here, say N.
553 int "Maximum number of CPUs (2-32)"
556 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
557 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
559 MARVEL support can handle a maximum of 32 CPUs, all the others
560 with working support have a maximum of 4 CPUs.
562 config ARCH_DISCONTIGMEM_ENABLE
563 bool "Discontiguous Memory Support (EXPERIMENTAL)"
564 depends on EXPERIMENTAL
566 Say Y to support efficient handling of discontiguous physical memory,
567 for architectures which are either NUMA (Non-Uniform Memory Access)
568 or have huge holes in the physical address space for other reasons.
569 See <file:Documentation/vm/numa> for more.
574 bool "NUMA Support (EXPERIMENTAL)"
575 depends on DISCONTIGMEM && BROKEN
577 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
578 Access). This option is for configuring high-end multiprocessor
579 server machines. If in doubt, say N.
584 depends on NEED_MULTIPLE_NODES
586 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
587 config ALPHA_LARGE_VMALLOC
590 Process creation and other aspects of virtual memory management can
591 be streamlined if we restrict the kernel to one PGD for all vmalloc
592 allocations. This equates to about 8GB.
594 Under normal circumstances, this is so far and above what is needed
595 as to be laughable. However, there are certain applications (such
596 as benchmark-grade in-kernel web serving) that can make use of as
597 much vmalloc space as is available.
599 Say N unless you know you need gobs and gobs of vmalloc space.
601 config VERBOSE_MCHECK
602 bool "Verbose Machine Checks"
604 config VERBOSE_MCHECK_ON
605 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
606 depends on VERBOSE_MCHECK
609 This option allows the default printing mode to be set, and then
610 possibly overridden by a boot command argument.
612 For example, if one wanted the option of printing verbose
613 machine checks, but wanted the default to be as if verbose
614 machine check printing was turned off, then one would choose
615 the printing mode to be 0. Then, upon reboot, one could add
616 the boot command line "verbose_mcheck=1" to get the normal
617 verbose machine check printing, or "verbose_mcheck=2" to get
618 the maximum information available.
620 Take the default (1) unless you want more control or more info.
624 default 1200 if ALPHA_RAWHIDE
627 source "drivers/pci/Kconfig"
628 source "drivers/eisa/Kconfig"
630 source "drivers/pcmcia/Kconfig"
633 tristate "SRM environment through procfs"
636 If you enable this option, a subdirectory inside /proc called
637 /proc/srm_environment will give you access to the all important
638 SRM environment variables (those which have a name) and also
639 to all others (by their internal number).
641 SRM is something like a BIOS for Alpha machines. There are some
642 other such BIOSes, like AlphaBIOS, which this driver cannot
643 support (hey, that's not SRM!).
645 Despite the fact that this driver doesn't work on all Alphas (but
646 only on those which have SRM as their firmware), it's save to
647 build it even if your particular machine doesn't know about SRM
648 (or if you intend to compile a generic kernel). It will simply
649 not create those subdirectory in /proc (and give you some warning,
652 This driver is also available as a module and will be called
655 source "fs/Kconfig.binfmt"
661 source "drivers/Kconfig"
665 source "arch/alpha/Kconfig.debug"
667 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
668 # but we also need it if VGA_HOSE is set
674 source "security/Kconfig"
676 source "crypto/Kconfig"