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
44 config GENERIC_ISA_DMA
52 config GENERIC_HARDIRQS
56 config GENERIC_IRQ_PROBE
60 config AUTO_IRQ_AFFINITY
71 prompt "Alpha system type"
74 This is the system type of your hardware. A "generic" kernel will
75 run on any supported Alpha system. However, if you configure a
76 kernel for your specific system, it will be faster and smaller.
78 To find out what type of Alpha system you have, you may want to
79 check out the Linux/Alpha FAQ, accessible on the WWW from
80 <http://www.alphalinux.org/>. In summary:
82 Alcor/Alpha-XLT AS 600
83 Alpha-XL XL-233, XL-266
84 AlphaBook1 Alpha laptop
85 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
86 Cabriolet AlphaPC64, AlphaPCI64
88 EB164 EB164 21164 evaluation board
89 EB64+ EB64+ 21064 evaluation board
90 EB66 EB66 21066 evaluation board
91 EB66+ EB66+ 21066 evaluation board
92 Jensen DECpc 150, DEC 2000 model 300,
96 Miata Personal Workstation 433a, 433au, 500a,
98 Marvel AlphaServer ES47 / ES80 / GS1280
100 Noname AXPpci33, UDB (Multia)
101 Noritake AS 1000A, AS 600A, AS 800
103 Rawhide AS 1200, AS 4000, AS 4100
104 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
106 Sable AS 2000, AS 2100
109 Titan AlphaServer ES45 / DS25
110 Wildfire AlphaServer GS 40/80/160/320
112 If you don't know what to do, choose "generic".
117 A generic kernel will run on all supported Alpha hardware.
120 bool "Alcor/Alpha-XLT"
122 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
123 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
124 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
125 controller (256-bit memory bus) and a PCI interface. It also does
126 all the work required to support an external Bcache and to maintain
127 memory coherence when a PCI device DMAs into (or out of) memory.
132 XL-233 and XL-266-based Alpha systems.
137 Dec AlphaBook1/Burns Alpha-based laptops.
139 config ALPHA_AVANTI_CH
142 config ALPHA_CABRIOLET
145 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
146 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
147 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
148 Bcache SIMMs. Requires power supply with 3.3V output.
153 Various 21264 systems with the tsunami core logic chipset.
154 API Networks: 264DP, UP2000(+), CS20;
155 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
160 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
161 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
162 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
163 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
164 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
165 motherboard. Requires power supply with 3.3V output.
167 config ALPHA_EB64P_CH
173 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
174 identical to EB64+. Baby PC-AT size. Runs from standard PC power
175 supply. The EB66 schematic was published as a marketing poster
176 advertising the 21066 as "the first microprocessor in the world with
182 Later variant of the EB66 board.
187 Apparently an obscure OEM single-board computer based on the
188 Typhoon/Tsunami chipset family. Information on it is scanty.
193 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
194 of the first-generation Alpha systems. A number of these systems
195 seem to be available on the second- hand market. The Jensen is a
196 floor-standing tower system which originally used a 150MHz 21064 It
197 used programmable logic to interface a 486 EISA I/O bridge to the
203 A technical overview of this board is available at
204 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
209 AlphaServer 2100A-based systems.
214 AlphaServer ES47 / ES80 / GS1280 based on EV7.
219 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
220 or 600au). There is an Installation HOWTO for this hardware at
221 <http://eijk.homelinux.org/~stefan/miata.html>.
226 AlphaServer 1000-based Alpha systems.
228 config ALPHA_NAUTILUS
231 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
233 config ALPHA_NONAME_CH
236 config ALPHA_NORITAKE
239 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
251 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
253 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
258 Samsung APC164UX. There is a page on known problems and workarounds
259 at <http://www.alphalinux.org/faq/FAQ-11.html>.
270 Digital AlphaServer 2000 and 2100-based systems.
278 Alpha 11164-based OEM single-board computer.
283 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
285 config ALPHA_WILDFIRE
288 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
292 # clear all implied options (don't want default values for those):
293 # Most of these machines have ISA slots; not exactly sure which don't,
294 # and this doesn't activate hordes of code, so do it always.
299 Find out whether you have ISA slots on your motherboard. ISA is the
300 name of a bus system, i.e. the way the CPU talks to the other stuff
301 inside your box. Other bus systems are PCI, EISA, MicroChannel
302 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
303 newer boards don't support it. If you have ISA, say Y, otherwise N.
311 depends on !ALPHA_JENSEN
314 Find out whether you have a PCI motherboard. PCI is the name of a
315 bus system, i.e. the way the CPU talks to the other stuff inside
316 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
317 VESA. If you have PCI, say Y, otherwise N.
319 The PCI-HOWTO, available from
320 <http://www.tldp.org/docs.html#howto>, contains valuable
321 information about which PCI hardware does work under Linux and which
328 config ALPHA_CORE_AGP
330 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
335 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
338 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
339 UDB). This design was produced by Digital's Technical OEM (TOEM)
340 group. It uses the 21066 processor running at 166MHz or 233MHz. It
341 is a baby-AT size, and runs from a standard PC power supply. It has
342 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
343 2 versions, with either PS/2 or large DIN connectors for the
348 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
349 default y if !ALPHA_LYNX
353 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
358 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
363 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
366 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
367 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
368 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
369 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
370 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
371 Runs from standard PC power supply.
374 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
375 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
379 default y if ALPHA_LYNX && !ALPHA_EV5
383 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
387 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
388 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
391 prompt "EV56 CPU (speed >= 333MHz)?"
392 depends on ALPHA_NORITAKE || ALPHA_PRIMO
395 prompt "EV56 CPU (speed >= 400MHz)?"
396 depends on ALPHA_RAWHIDE
399 bool "EV5 CPU daughtercard (model 5/xxx)?"
400 depends on ALPHA_NORITAKE || ALPHA_MIKASA
402 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
405 bool "EV5 CPU(s) (model 5/xxx)?"
406 depends on ALPHA_SABLE
408 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
412 depends on ALPHA_LYNX
417 depends on ALPHA_SABLE || ALPHA_LYNX
422 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
427 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
432 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
436 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
437 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
439 Is this a machine based on the EV67 core? If in doubt, select N here
440 and the machine will be treated as an EV6.
444 depends on ALPHA_MARVEL
449 depends on ALPHA_RAWHIDE
454 depends on ALPHA_RX164
457 config ALPHA_IRONGATE
459 depends on ALPHA_NAUTILUS
462 config GENERIC_HWEIGHT
464 default y if !ALPHA_EV67
468 depends on ALPHA_XL || ALPHA_AVANTI_CH
471 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
473 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
475 config ALPHA_BROKEN_IRQ_MASK
477 depends on ALPHA_GENERIC || ALPHA_PC164
481 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
482 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
484 There are two different types of booting firmware on Alphas: SRM,
485 which is command line driven, and ARC, which uses menus and arrow
486 keys. Details about the Linux/Alpha booting process are contained in
487 the Linux/Alpha FAQ, accessible on the WWW from
488 <http://www.alphalinux.org/>.
490 The usual way to load Linux on an Alpha machine is to use MILO
491 (a bootloader that lets you pass command line parameters to the
492 kernel just like lilo does for the x86 architecture) which can be
493 loaded either from ARC or can be installed directly as a permanent
494 firmware replacement from floppy (which requires changing a certain
495 jumper on the motherboard). If you want to do either of these, say N
496 here. If MILO doesn't work on your system (true for Jensen
497 motherboards), you can bypass it altogether and boot Linux directly
498 from an SRM console; say Y here in order to do that. Note that you
499 won't be able to boot from an IDE disk using SRM.
505 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
508 config ARCH_MAY_HAVE_PC_FDC
512 bool "Symmetric multi-processing support"
513 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
515 This enables support for systems with more than one CPU. If you have
516 a system with only one CPU, like most personal computers, say N. If
517 you have a system with more than one CPU, say Y.
519 If you say N here, the kernel will run on single and multiprocessor
520 machines, but will use only one CPU of a multiprocessor machine. If
521 you say Y here, the kernel will run on many, but not all,
522 singleprocessor machines. On a singleprocessor machine, the kernel
523 will run faster if you say N here.
525 See also the <file:Documentation/smp.txt>, and the SMP-HOWTO
526 available at <http://www.tldp.org/docs.html#howto>.
528 If you don't know what to do here, say N.
536 int "Maximum number of CPUs (2-64)"
541 config ARCH_DISCONTIGMEM_ENABLE
542 bool "Discontiguous Memory Support (EXPERIMENTAL)"
543 depends on EXPERIMENTAL
545 Say Y to support efficient handling of discontiguous physical memory,
546 for architectures which are either NUMA (Non-Uniform Memory Access)
547 or have huge holes in the physical address space for other reasons.
548 See <file:Documentation/vm/numa> for more.
553 bool "NUMA Support (EXPERIMENTAL)"
554 depends on DISCONTIGMEM && BROKEN
556 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
557 Access). This option is for configuring high-end multiprocessor
558 server machines. If in doubt, say N.
563 depends on NEED_MULTIPLE_NODES
565 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
566 config ALPHA_LARGE_VMALLOC
569 Process creation and other aspects of virtual memory management can
570 be streamlined if we restrict the kernel to one PGD for all vmalloc
571 allocations. This equates to about 8GB.
573 Under normal circumstances, this is so far and above what is needed
574 as to be laughable. However, there are certain applications (such
575 as benchmark-grade in-kernel web serving) that can make use of as
576 much vmalloc space as is available.
578 Say N unless you know you need gobs and gobs of vmalloc space.
580 config VERBOSE_MCHECK
581 bool "Verbose Machine Checks"
583 config VERBOSE_MCHECK_ON
584 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
585 depends on VERBOSE_MCHECK
588 This option allows the default printing mode to be set, and then
589 possibly overridden by a boot command argument.
591 For example, if one wanted the option of printing verbose
592 machine checks, but wanted the default to be as if verbose
593 machine check printing was turned off, then one would choose
594 the printing mode to be 0. Then, upon reboot, one could add
595 the boot command line "verbose_mcheck=1" to get the normal
596 verbose machine check printing, or "verbose_mcheck=2" to get
597 the maximum information available.
599 Take the default (1) unless you want more control or more info.
601 source "drivers/pci/Kconfig"
602 source "drivers/eisa/Kconfig"
604 source "drivers/pcmcia/Kconfig"
607 tristate "SRM environment through procfs"
610 If you enable this option, a subdirectory inside /proc called
611 /proc/srm_environment will give you access to the all important
612 SRM environment variables (those which have a name) and also
613 to all others (by their internal number).
615 SRM is something like a BIOS for Alpha machines. There are some
616 other such BIOSes, like AlphaBIOS, which this driver cannot
617 support (hey, that's not SRM!).
619 Despite the fact that this driver doesn't work on all Alphas (but
620 only on those which have SRM as their firmware), it's save to
621 build it even if your particular machine doesn't know about SRM
622 (or if you intend to compile a generic kernel). It will simply
623 not create those subdirectory in /proc (and give you some warning,
626 This driver is also available as a module and will be called
629 source "fs/Kconfig.binfmt"
635 source "drivers/Kconfig"
639 source "arch/alpha/oprofile/Kconfig"
641 source "arch/alpha/Kconfig.debug"
643 source "security/Kconfig"
645 source "crypto/Kconfig"