2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
11 select HAVE_SYSCALL_WRAPPERS
12 select HAVE_PERF_EVENTS
15 The Alpha is a 64-bit general-purpose processor designed and
16 marketed by the Digital Equipment Corporation of blessed memory,
17 now Hewlett-Packard. The Alpha Linux project has a home page at
18 <http://www.alphalinux.org/>.
27 config RWSEM_GENERIC_SPINLOCK
30 config RWSEM_XCHGADD_ALGORITHM
34 config ARCH_HAS_ILOG2_U32
38 config ARCH_HAS_ILOG2_U64
42 config GENERIC_FIND_NEXT_BIT
46 config GENERIC_CALIBRATE_DELAY
54 config ARCH_USES_GETTIMEOFFSET
62 config NEED_DMA_MAP_STATE
65 config GENERIC_ISA_DMA
73 config GENERIC_HARDIRQS
77 config GENERIC_IRQ_PROBE
81 config AUTO_IRQ_AFFINITY
87 source "kernel/Kconfig.freezer"
93 prompt "Alpha system type"
96 This is the system type of your hardware. A "generic" kernel will
97 run on any supported Alpha system. However, if you configure a
98 kernel for your specific system, it will be faster and smaller.
100 To find out what type of Alpha system you have, you may want to
101 check out the Linux/Alpha FAQ, accessible on the WWW from
102 <http://www.alphalinux.org/>. In summary:
104 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
105 Alpha-XL XL-233, XL-266
106 AlphaBook1 Alpha laptop
107 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
108 Cabriolet AlphaPC64, AlphaPCI64
109 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
110 EB164 EB164 21164 evaluation board
111 EB64+ EB64+ 21064 evaluation board
112 EB66 EB66 21066 evaluation board
113 EB66+ EB66+ 21066 evaluation board
114 Jensen DECpc 150, DEC 2000 models 300, 500
117 Miata Personal Workstation 433/500/600 a/au
118 Marvel AlphaServer ES47 / ES80 / GS1280
120 Noname AXPpci33, UDB (Multia)
121 Noritake AS 1000A, AS 600A, AS 800
123 Rawhide AS 1200, AS 4000, AS 4100
124 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
126 Sable AS 2000, AS 2100
129 Titan AlphaServer ES45 / DS25 / DS15
130 Wildfire AlphaServer GS 40/80/160/320
132 If you don't know what to do, choose "generic".
137 A generic kernel will run on all supported Alpha hardware.
140 bool "Alcor/Alpha-XLT"
142 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
143 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
144 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
145 controller (256-bit memory bus) and a PCI interface. It also does
146 all the work required to support an external Bcache and to maintain
147 memory coherence when a PCI device DMAs into (or out of) memory.
152 XL-233 and XL-266-based Alpha systems.
157 Dec AlphaBook1/Burns Alpha-based laptops.
159 config ALPHA_AVANTI_CH
162 config ALPHA_CABRIOLET
165 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
166 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
167 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
168 Bcache SIMMs. Requires power supply with 3.3V output.
173 Various 21264 systems with the tsunami core logic chipset.
174 API Networks: 264DP, UP2000(+), CS20;
175 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
180 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
181 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
182 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
183 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
184 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
185 motherboard. Requires power supply with 3.3V output.
187 config ALPHA_EB64P_CH
193 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
194 identical to EB64+. Baby PC-AT size. Runs from standard PC power
195 supply. The EB66 schematic was published as a marketing poster
196 advertising the 21066 as "the first microprocessor in the world with
202 Later variant of the EB66 board.
207 Apparently an obscure OEM single-board computer based on the
208 Typhoon/Tsunami chipset family. Information on it is scanty.
213 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
214 of the first-generation Alpha systems. A number of these systems
215 seem to be available on the second- hand market. The Jensen is a
216 floor-standing tower system which originally used a 150MHz 21064 It
217 used programmable logic to interface a 486 EISA I/O bridge to the
223 A technical overview of this board is available at
224 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
229 AlphaServer 2100A-based systems.
234 AlphaServer ES47 / ES80 / GS1280 based on EV7.
239 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
245 AlphaServer 1000-based Alpha systems.
247 config ALPHA_NAUTILUS
250 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
252 config ALPHA_NONAME_CH
255 config ALPHA_NORITAKE
258 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
270 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
272 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
277 Samsung APC164UX. There is a page on known problems and workarounds
278 at <http://www.alphalinux.org/faq/FAQ-11.html>.
289 Digital AlphaServer 2000 and 2100-based systems.
297 Alpha 11164-based OEM single-board computer.
302 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
304 config ALPHA_WILDFIRE
307 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
311 # clear all implied options (don't want default values for those):
312 # Most of these machines have ISA slots; not exactly sure which don't,
313 # and this doesn't activate hordes of code, so do it always.
318 Find out whether you have ISA slots on your motherboard. ISA is the
319 name of a bus system, i.e. the way the CPU talks to the other stuff
320 inside your box. Other bus systems are PCI, EISA, MicroChannel
321 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
322 newer boards don't support it. If you have ISA, say Y, otherwise N.
330 depends on !ALPHA_JENSEN
333 Find out whether you have a PCI motherboard. PCI is the name of a
334 bus system, i.e. the way the CPU talks to the other stuff inside
335 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
336 VESA. If you have PCI, say Y, otherwise N.
350 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
353 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
354 UDB). This design was produced by Digital's Technical OEM (TOEM)
355 group. It uses the 21066 processor running at 166MHz or 233MHz. It
356 is a baby-AT size, and runs from a standard PC power supply. It has
357 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
358 2 versions, with either PS/2 or large DIN connectors for the
363 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
364 default y if !ALPHA_LYNX
368 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
373 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
378 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
381 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
382 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
383 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
384 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
385 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
386 Runs from standard PC power supply.
389 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
390 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
394 default y if ALPHA_LYNX && !ALPHA_EV5
398 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
402 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
403 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
406 prompt "EV56 CPU (speed >= 333MHz)?"
407 depends on ALPHA_NORITAKE || ALPHA_PRIMO
410 prompt "EV56 CPU (speed >= 400MHz)?"
411 depends on ALPHA_RAWHIDE
414 bool "EV5 CPU daughtercard (model 5/xxx)?"
415 depends on ALPHA_NORITAKE || ALPHA_MIKASA
417 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
420 bool "EV5 CPU(s) (model 5/xxx)?"
421 depends on ALPHA_SABLE
423 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
427 depends on ALPHA_LYNX
432 depends on ALPHA_SABLE || ALPHA_LYNX
437 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
442 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
447 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
451 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
452 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
454 Is this a machine based on the EV67 core? If in doubt, select N here
455 and the machine will be treated as an EV6.
459 depends on ALPHA_MARVEL
464 depends on ALPHA_RAWHIDE
469 depends on ALPHA_RX164
472 config ALPHA_IRONGATE
474 depends on ALPHA_NAUTILUS
477 config GENERIC_HWEIGHT
479 default y if !ALPHA_EV67
483 depends on ALPHA_XL || ALPHA_AVANTI_CH
486 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
488 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
490 config ALPHA_BROKEN_IRQ_MASK
492 depends on ALPHA_GENERIC || ALPHA_PC164
497 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
500 Support VGA on an arbitrary hose; needed for several platforms
501 which always have multiple hoses, and whose consoles support it.
505 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
506 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
508 There are two different types of booting firmware on Alphas: SRM,
509 which is command line driven, and ARC, which uses menus and arrow
510 keys. Details about the Linux/Alpha booting process are contained in
511 the Linux/Alpha FAQ, accessible on the WWW from
512 <http://www.alphalinux.org/>.
514 The usual way to load Linux on an Alpha machine is to use MILO
515 (a bootloader that lets you pass command line parameters to the
516 kernel just like lilo does for the x86 architecture) which can be
517 loaded either from ARC or can be installed directly as a permanent
518 firmware replacement from floppy (which requires changing a certain
519 jumper on the motherboard). If you want to do either of these, say N
520 here. If MILO doesn't work on your system (true for Jensen
521 motherboards), you can bypass it altogether and boot Linux directly
522 from an SRM console; say Y here in order to do that. Note that you
523 won't be able to boot from an IDE disk using SRM.
529 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
532 config ARCH_MAY_HAVE_PC_FDC
536 bool "Symmetric multi-processing support"
537 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
538 select USE_GENERIC_SMP_HELPERS
540 This enables support for systems with more than one CPU. If you have
541 a system with only one CPU, like most personal computers, say N. If
542 you have a system with more than one CPU, say Y.
544 If you say N here, the kernel will run on single and multiprocessor
545 machines, but will use only one CPU of a multiprocessor machine. If
546 you say Y here, the kernel will run on many, but not all,
547 singleprocessor machines. On a singleprocessor machine, the kernel
548 will run faster if you say N here.
550 See also the SMP-HOWTO available at
551 <http://www.tldp.org/docs.html#howto>.
553 If you don't know what to do here, say N.
561 int "Maximum number of CPUs (2-32)"
564 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
565 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
567 MARVEL support can handle a maximum of 32 CPUs, all the others
568 with working support have a maximum of 4 CPUs.
570 config ARCH_DISCONTIGMEM_ENABLE
571 bool "Discontiguous Memory Support (EXPERIMENTAL)"
572 depends on EXPERIMENTAL
574 Say Y to support efficient handling of discontiguous physical memory,
575 for architectures which are either NUMA (Non-Uniform Memory Access)
576 or have huge holes in the physical address space for other reasons.
577 See <file:Documentation/vm/numa> for more.
582 bool "NUMA Support (EXPERIMENTAL)"
583 depends on DISCONTIGMEM && BROKEN
585 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
586 Access). This option is for configuring high-end multiprocessor
587 server machines. If in doubt, say N.
592 depends on NEED_MULTIPLE_NODES
594 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
595 config ALPHA_LARGE_VMALLOC
598 Process creation and other aspects of virtual memory management can
599 be streamlined if we restrict the kernel to one PGD for all vmalloc
600 allocations. This equates to about 8GB.
602 Under normal circumstances, this is so far and above what is needed
603 as to be laughable. However, there are certain applications (such
604 as benchmark-grade in-kernel web serving) that can make use of as
605 much vmalloc space as is available.
607 Say N unless you know you need gobs and gobs of vmalloc space.
609 config VERBOSE_MCHECK
610 bool "Verbose Machine Checks"
612 config VERBOSE_MCHECK_ON
613 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
614 depends on VERBOSE_MCHECK
617 This option allows the default printing mode to be set, and then
618 possibly overridden by a boot command argument.
620 For example, if one wanted the option of printing verbose
621 machine checks, but wanted the default to be as if verbose
622 machine check printing was turned off, then one would choose
623 the printing mode to be 0. Then, upon reboot, one could add
624 the boot command line "verbose_mcheck=1" to get the normal
625 verbose machine check printing, or "verbose_mcheck=2" to get
626 the maximum information available.
628 Take the default (1) unless you want more control or more info.
632 default 1200 if ALPHA_RAWHIDE
635 source "drivers/pci/Kconfig"
636 source "drivers/eisa/Kconfig"
638 source "drivers/pcmcia/Kconfig"
641 tristate "SRM environment through procfs"
644 If you enable this option, a subdirectory inside /proc called
645 /proc/srm_environment will give you access to the all important
646 SRM environment variables (those which have a name) and also
647 to all others (by their internal number).
649 SRM is something like a BIOS for Alpha machines. There are some
650 other such BIOSes, like AlphaBIOS, which this driver cannot
651 support (hey, that's not SRM!).
653 Despite the fact that this driver doesn't work on all Alphas (but
654 only on those which have SRM as their firmware), it's save to
655 build it even if your particular machine doesn't know about SRM
656 (or if you intend to compile a generic kernel). It will simply
657 not create those subdirectory in /proc (and give you some warning,
660 This driver is also available as a module and will be called
663 source "fs/Kconfig.binfmt"
669 source "drivers/Kconfig"
673 source "arch/alpha/Kconfig.debug"
675 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
676 # but we also need it if VGA_HOSE is set
682 source "security/Kconfig"
684 source "crypto/Kconfig"