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
76 prompt "Alpha system type"
79 This is the system type of your hardware. A "generic" kernel will
80 run on any supported Alpha system. However, if you configure a
81 kernel for your specific system, it will be faster and smaller.
83 To find out what type of Alpha system you have, you may want to
84 check out the Linux/Alpha FAQ, accessible on the WWW from
85 <http://www.alphalinux.org/>. In summary:
87 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
88 Alpha-XL XL-233, XL-266
89 AlphaBook1 Alpha laptop
90 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
91 Cabriolet AlphaPC64, AlphaPCI64
92 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
93 EB164 EB164 21164 evaluation board
94 EB64+ EB64+ 21064 evaluation board
95 EB66 EB66 21066 evaluation board
96 EB66+ EB66+ 21066 evaluation board
97 Jensen DECpc 150, DEC 2000 models 300, 500
100 Miata Personal Workstation 433/500/600 a/au
101 Marvel AlphaServer ES47 / ES80 / GS1280
103 Noname AXPpci33, UDB (Multia)
104 Noritake AS 1000A, AS 600A, AS 800
106 Rawhide AS 1200, AS 4000, AS 4100
107 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
109 Sable AS 2000, AS 2100
112 Titan AlphaServer ES45 / DS25 / DS15
113 Wildfire AlphaServer GS 40/80/160/320
115 If you don't know what to do, choose "generic".
120 A generic kernel will run on all supported Alpha hardware.
123 bool "Alcor/Alpha-XLT"
125 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
126 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
127 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
128 controller (256-bit memory bus) and a PCI interface. It also does
129 all the work required to support an external Bcache and to maintain
130 memory coherence when a PCI device DMAs into (or out of) memory.
135 XL-233 and XL-266-based Alpha systems.
140 Dec AlphaBook1/Burns Alpha-based laptops.
142 config ALPHA_AVANTI_CH
145 config ALPHA_CABRIOLET
148 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
149 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
150 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
151 Bcache SIMMs. Requires power supply with 3.3V output.
156 Various 21264 systems with the tsunami core logic chipset.
157 API Networks: 264DP, UP2000(+), CS20;
158 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
163 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
164 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
165 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
166 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
167 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
168 motherboard. Requires power supply with 3.3V output.
170 config ALPHA_EB64P_CH
176 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
177 identical to EB64+. Baby PC-AT size. Runs from standard PC power
178 supply. The EB66 schematic was published as a marketing poster
179 advertising the 21066 as "the first microprocessor in the world with
185 Later variant of the EB66 board.
190 Apparently an obscure OEM single-board computer based on the
191 Typhoon/Tsunami chipset family. Information on it is scanty.
196 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
197 of the first-generation Alpha systems. A number of these systems
198 seem to be available on the second- hand market. The Jensen is a
199 floor-standing tower system which originally used a 150MHz 21064 It
200 used programmable logic to interface a 486 EISA I/O bridge to the
206 A technical overview of this board is available at
207 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
212 AlphaServer 2100A-based systems.
217 AlphaServer ES47 / ES80 / GS1280 based on EV7.
222 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
223 or 600au). There is an Installation HOWTO for this hardware at
224 <http://eijk.homelinux.org/~stefan/miata.html>.
229 AlphaServer 1000-based Alpha systems.
231 config ALPHA_NAUTILUS
234 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
236 config ALPHA_NONAME_CH
239 config ALPHA_NORITAKE
242 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
254 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
256 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
261 Samsung APC164UX. There is a page on known problems and workarounds
262 at <http://www.alphalinux.org/faq/FAQ-11.html>.
273 Digital AlphaServer 2000 and 2100-based systems.
281 Alpha 11164-based OEM single-board computer.
286 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
288 config ALPHA_WILDFIRE
291 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
295 # clear all implied options (don't want default values for those):
296 # Most of these machines have ISA slots; not exactly sure which don't,
297 # and this doesn't activate hordes of code, so do it always.
302 Find out whether you have ISA slots on your motherboard. ISA is the
303 name of a bus system, i.e. the way the CPU talks to the other stuff
304 inside your box. Other bus systems are PCI, EISA, MicroChannel
305 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
306 newer boards don't support it. If you have ISA, say Y, otherwise N.
314 depends on !ALPHA_JENSEN
317 Find out whether you have a PCI motherboard. PCI is the name of a
318 bus system, i.e. the way the CPU talks to the other stuff inside
319 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
320 VESA. If you have PCI, say Y, otherwise N.
329 config ALPHA_CORE_AGP
331 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
336 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
339 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
340 UDB). This design was produced by Digital's Technical OEM (TOEM)
341 group. It uses the 21066 processor running at 166MHz or 233MHz. It
342 is a baby-AT size, and runs from a standard PC power supply. It has
343 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
344 2 versions, with either PS/2 or large DIN connectors for the
349 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
350 default y if !ALPHA_LYNX
354 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
359 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
364 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
367 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
368 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
369 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
370 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
371 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
372 Runs from standard PC power supply.
375 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
376 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
380 default y if ALPHA_LYNX && !ALPHA_EV5
384 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
388 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
389 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
392 prompt "EV56 CPU (speed >= 333MHz)?"
393 depends on ALPHA_NORITAKE || ALPHA_PRIMO
396 prompt "EV56 CPU (speed >= 400MHz)?"
397 depends on ALPHA_RAWHIDE
400 bool "EV5 CPU daughtercard (model 5/xxx)?"
401 depends on ALPHA_NORITAKE || ALPHA_MIKASA
403 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
406 bool "EV5 CPU(s) (model 5/xxx)?"
407 depends on ALPHA_SABLE
409 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
413 depends on ALPHA_LYNX
418 depends on ALPHA_SABLE || ALPHA_LYNX
423 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
428 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
433 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
437 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
438 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
440 Is this a machine based on the EV67 core? If in doubt, select N here
441 and the machine will be treated as an EV6.
445 depends on ALPHA_MARVEL
450 depends on ALPHA_RAWHIDE
455 depends on ALPHA_RX164
458 config ALPHA_IRONGATE
460 depends on ALPHA_NAUTILUS
463 config GENERIC_HWEIGHT
465 default y if !ALPHA_EV67
469 depends on ALPHA_XL || ALPHA_AVANTI_CH
472 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
474 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
476 config ALPHA_BROKEN_IRQ_MASK
478 depends on ALPHA_GENERIC || ALPHA_PC164
483 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
486 Support VGA on an arbitrary hose; needed for several platforms
487 which always have multiple hoses, and whose consoles support it.
491 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
492 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
494 There are two different types of booting firmware on Alphas: SRM,
495 which is command line driven, and ARC, which uses menus and arrow
496 keys. Details about the Linux/Alpha booting process are contained in
497 the Linux/Alpha FAQ, accessible on the WWW from
498 <http://www.alphalinux.org/>.
500 The usual way to load Linux on an Alpha machine is to use MILO
501 (a bootloader that lets you pass command line parameters to the
502 kernel just like lilo does for the x86 architecture) which can be
503 loaded either from ARC or can be installed directly as a permanent
504 firmware replacement from floppy (which requires changing a certain
505 jumper on the motherboard). If you want to do either of these, say N
506 here. If MILO doesn't work on your system (true for Jensen
507 motherboards), you can bypass it altogether and boot Linux directly
508 from an SRM console; say Y here in order to do that. Note that you
509 won't be able to boot from an IDE disk using SRM.
515 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
518 config ARCH_MAY_HAVE_PC_FDC
522 bool "Symmetric multi-processing support"
523 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
525 This enables support for systems with more than one CPU. If you have
526 a system with only one CPU, like most personal computers, say N. If
527 you have a system with more than one CPU, say Y.
529 If you say N here, the kernel will run on single and multiprocessor
530 machines, but will use only one CPU of a multiprocessor machine. If
531 you say Y here, the kernel will run on many, but not all,
532 singleprocessor machines. On a singleprocessor machine, the kernel
533 will run faster if you say N here.
535 See also the <file:Documentation/smp.txt>, and the SMP-HOWTO
536 available at <http://www.tldp.org/docs.html#howto>.
538 If you don't know what to do here, say N.
546 int "Maximum number of CPUs (2-32)"
549 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
550 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
552 MARVEL support can handle a maximum of 32 CPUs, all the others
553 with working support have a maximum of 4 CPUs.
555 config ARCH_DISCONTIGMEM_ENABLE
556 bool "Discontiguous Memory Support (EXPERIMENTAL)"
557 depends on EXPERIMENTAL
559 Say Y to support efficient handling of discontiguous physical memory,
560 for architectures which are either NUMA (Non-Uniform Memory Access)
561 or have huge holes in the physical address space for other reasons.
562 See <file:Documentation/vm/numa> for more.
567 bool "NUMA Support (EXPERIMENTAL)"
568 depends on DISCONTIGMEM && BROKEN
570 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
571 Access). This option is for configuring high-end multiprocessor
572 server machines. If in doubt, say N.
577 depends on NEED_MULTIPLE_NODES
579 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
580 config ALPHA_LARGE_VMALLOC
583 Process creation and other aspects of virtual memory management can
584 be streamlined if we restrict the kernel to one PGD for all vmalloc
585 allocations. This equates to about 8GB.
587 Under normal circumstances, this is so far and above what is needed
588 as to be laughable. However, there are certain applications (such
589 as benchmark-grade in-kernel web serving) that can make use of as
590 much vmalloc space as is available.
592 Say N unless you know you need gobs and gobs of vmalloc space.
594 config VERBOSE_MCHECK
595 bool "Verbose Machine Checks"
597 config VERBOSE_MCHECK_ON
598 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
599 depends on VERBOSE_MCHECK
602 This option allows the default printing mode to be set, and then
603 possibly overridden by a boot command argument.
605 For example, if one wanted the option of printing verbose
606 machine checks, but wanted the default to be as if verbose
607 machine check printing was turned off, then one would choose
608 the printing mode to be 0. Then, upon reboot, one could add
609 the boot command line "verbose_mcheck=1" to get the normal
610 verbose machine check printing, or "verbose_mcheck=2" to get
611 the maximum information available.
613 Take the default (1) unless you want more control or more info.
615 source "drivers/pci/Kconfig"
616 source "drivers/eisa/Kconfig"
618 source "drivers/pcmcia/Kconfig"
621 tristate "SRM environment through procfs"
624 If you enable this option, a subdirectory inside /proc called
625 /proc/srm_environment will give you access to the all important
626 SRM environment variables (those which have a name) and also
627 to all others (by their internal number).
629 SRM is something like a BIOS for Alpha machines. There are some
630 other such BIOSes, like AlphaBIOS, which this driver cannot
631 support (hey, that's not SRM!).
633 Despite the fact that this driver doesn't work on all Alphas (but
634 only on those which have SRM as their firmware), it's save to
635 build it even if your particular machine doesn't know about SRM
636 (or if you intend to compile a generic kernel). It will simply
637 not create those subdirectory in /proc (and give you some warning,
640 This driver is also available as a module and will be called
643 source "fs/Kconfig.binfmt"
649 source "drivers/Kconfig"
653 source "arch/alpha/Kconfig.debug"
655 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
656 # but we also need it if VGA_HOSE is set
662 source "security/Kconfig"
664 source "crypto/Kconfig"