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
58 config GENERIC_CMOS_UPDATE
65 config NEED_DMA_MAP_STATE
68 config GENERIC_ISA_DMA
76 config GENERIC_HARDIRQS
80 config GENERIC_IRQ_PROBE
84 config AUTO_IRQ_AFFINITY
90 source "kernel/Kconfig.freezer"
96 prompt "Alpha system type"
99 This is the system type of your hardware. A "generic" kernel will
100 run on any supported Alpha system. However, if you configure a
101 kernel for your specific system, it will be faster and smaller.
103 To find out what type of Alpha system you have, you may want to
104 check out the Linux/Alpha FAQ, accessible on the WWW from
105 <http://www.alphalinux.org/>. In summary:
107 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
108 Alpha-XL XL-233, XL-266
109 AlphaBook1 Alpha laptop
110 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
111 Cabriolet AlphaPC64, AlphaPCI64
112 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
113 EB164 EB164 21164 evaluation board
114 EB64+ EB64+ 21064 evaluation board
115 EB66 EB66 21066 evaluation board
116 EB66+ EB66+ 21066 evaluation board
117 Jensen DECpc 150, DEC 2000 models 300, 500
120 Miata Personal Workstation 433/500/600 a/au
121 Marvel AlphaServer ES47 / ES80 / GS1280
123 Noname AXPpci33, UDB (Multia)
124 Noritake AS 1000A, AS 600A, AS 800
126 Rawhide AS 1200, AS 4000, AS 4100
127 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
129 Sable AS 2000, AS 2100
132 Titan AlphaServer ES45 / DS25 / DS15
133 Wildfire AlphaServer GS 40/80/160/320
135 If you don't know what to do, choose "generic".
140 A generic kernel will run on all supported Alpha hardware.
143 bool "Alcor/Alpha-XLT"
145 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
146 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
147 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
148 controller (256-bit memory bus) and a PCI interface. It also does
149 all the work required to support an external Bcache and to maintain
150 memory coherence when a PCI device DMAs into (or out of) memory.
155 XL-233 and XL-266-based Alpha systems.
160 Dec AlphaBook1/Burns Alpha-based laptops.
162 config ALPHA_AVANTI_CH
165 config ALPHA_CABRIOLET
168 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
169 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
170 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
171 Bcache SIMMs. Requires power supply with 3.3V output.
176 Various 21264 systems with the tsunami core logic chipset.
177 API Networks: 264DP, UP2000(+), CS20;
178 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
183 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
184 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
185 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
186 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
187 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
188 motherboard. Requires power supply with 3.3V output.
190 config ALPHA_EB64P_CH
196 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
197 identical to EB64+. Baby PC-AT size. Runs from standard PC power
198 supply. The EB66 schematic was published as a marketing poster
199 advertising the 21066 as "the first microprocessor in the world with
205 Later variant of the EB66 board.
210 Apparently an obscure OEM single-board computer based on the
211 Typhoon/Tsunami chipset family. Information on it is scanty.
216 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
217 of the first-generation Alpha systems. A number of these systems
218 seem to be available on the second- hand market. The Jensen is a
219 floor-standing tower system which originally used a 150MHz 21064 It
220 used programmable logic to interface a 486 EISA I/O bridge to the
226 A technical overview of this board is available at
227 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
232 AlphaServer 2100A-based systems.
237 AlphaServer ES47 / ES80 / GS1280 based on EV7.
242 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
248 AlphaServer 1000-based Alpha systems.
250 config ALPHA_NAUTILUS
253 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
255 config ALPHA_NONAME_CH
258 config ALPHA_NORITAKE
261 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
273 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
275 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
280 Samsung APC164UX. There is a page on known problems and workarounds
281 at <http://www.alphalinux.org/faq/FAQ-11.html>.
292 Digital AlphaServer 2000 and 2100-based systems.
300 Alpha 11164-based OEM single-board computer.
305 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
307 config ALPHA_WILDFIRE
310 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
314 # clear all implied options (don't want default values for those):
315 # Most of these machines have ISA slots; not exactly sure which don't,
316 # and this doesn't activate hordes of code, so do it always.
321 Find out whether you have ISA slots on your motherboard. ISA is the
322 name of a bus system, i.e. the way the CPU talks to the other stuff
323 inside your box. Other bus systems are PCI, EISA, MicroChannel
324 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
325 newer boards don't support it. If you have ISA, say Y, otherwise N.
333 depends on !ALPHA_JENSEN
336 Find out whether you have a PCI motherboard. PCI is the name of a
337 bus system, i.e. the way the CPU talks to the other stuff inside
338 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
339 VESA. If you have PCI, say Y, otherwise N.
353 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
356 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
357 UDB). This design was produced by Digital's Technical OEM (TOEM)
358 group. It uses the 21066 processor running at 166MHz or 233MHz. It
359 is a baby-AT size, and runs from a standard PC power supply. It has
360 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
361 2 versions, with either PS/2 or large DIN connectors for the
366 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
367 default y if !ALPHA_LYNX
371 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
376 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
381 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
384 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
385 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
386 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
387 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
388 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
389 Runs from standard PC power supply.
392 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
393 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
397 default y if ALPHA_LYNX && !ALPHA_EV5
401 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
405 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
406 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
409 prompt "EV56 CPU (speed >= 333MHz)?"
410 depends on ALPHA_NORITAKE || ALPHA_PRIMO
413 prompt "EV56 CPU (speed >= 400MHz)?"
414 depends on ALPHA_RAWHIDE
417 bool "EV5 CPU daughtercard (model 5/xxx)?"
418 depends on ALPHA_NORITAKE || ALPHA_MIKASA
420 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
423 bool "EV5 CPU(s) (model 5/xxx)?"
424 depends on ALPHA_SABLE
426 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
430 depends on ALPHA_LYNX
435 depends on ALPHA_SABLE || ALPHA_LYNX
440 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
445 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
450 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
454 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
455 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
457 Is this a machine based on the EV67 core? If in doubt, select N here
458 and the machine will be treated as an EV6.
462 depends on ALPHA_MARVEL
467 depends on ALPHA_RAWHIDE
472 depends on ALPHA_RX164
475 config ALPHA_IRONGATE
477 depends on ALPHA_NAUTILUS
480 config GENERIC_HWEIGHT
482 default y if !ALPHA_EV67
486 depends on ALPHA_XL || ALPHA_AVANTI_CH
489 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
491 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
493 config ALPHA_BROKEN_IRQ_MASK
495 depends on ALPHA_GENERIC || ALPHA_PC164
500 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
503 Support VGA on an arbitrary hose; needed for several platforms
504 which always have multiple hoses, and whose consoles support it.
508 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
509 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
511 There are two different types of booting firmware on Alphas: SRM,
512 which is command line driven, and ARC, which uses menus and arrow
513 keys. Details about the Linux/Alpha booting process are contained in
514 the Linux/Alpha FAQ, accessible on the WWW from
515 <http://www.alphalinux.org/>.
517 The usual way to load Linux on an Alpha machine is to use MILO
518 (a bootloader that lets you pass command line parameters to the
519 kernel just like lilo does for the x86 architecture) which can be
520 loaded either from ARC or can be installed directly as a permanent
521 firmware replacement from floppy (which requires changing a certain
522 jumper on the motherboard). If you want to do either of these, say N
523 here. If MILO doesn't work on your system (true for Jensen
524 motherboards), you can bypass it altogether and boot Linux directly
525 from an SRM console; say Y here in order to do that. Note that you
526 won't be able to boot from an IDE disk using SRM.
532 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
535 config ARCH_MAY_HAVE_PC_FDC
539 bool "Symmetric multi-processing support"
540 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
541 select USE_GENERIC_SMP_HELPERS
543 This enables support for systems with more than one CPU. If you have
544 a system with only one CPU, like most personal computers, say N. If
545 you have a system with more than one CPU, say Y.
547 If you say N here, the kernel will run on single and multiprocessor
548 machines, but will use only one CPU of a multiprocessor machine. If
549 you say Y here, the kernel will run on many, but not all,
550 singleprocessor machines. On a singleprocessor machine, the kernel
551 will run faster if you say N here.
553 See also the SMP-HOWTO available at
554 <http://www.tldp.org/docs.html#howto>.
556 If you don't know what to do here, say N.
564 int "Maximum number of CPUs (2-32)"
567 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
568 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
570 MARVEL support can handle a maximum of 32 CPUs, all the others
571 with working support have a maximum of 4 CPUs.
573 config ARCH_DISCONTIGMEM_ENABLE
574 bool "Discontiguous Memory Support (EXPERIMENTAL)"
575 depends on EXPERIMENTAL
577 Say Y to support efficient handling of discontiguous physical memory,
578 for architectures which are either NUMA (Non-Uniform Memory Access)
579 or have huge holes in the physical address space for other reasons.
580 See <file:Documentation/vm/numa> for more.
585 bool "NUMA Support (EXPERIMENTAL)"
586 depends on DISCONTIGMEM && BROKEN
588 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
589 Access). This option is for configuring high-end multiprocessor
590 server machines. If in doubt, say N.
595 depends on NEED_MULTIPLE_NODES
597 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
598 config ALPHA_LARGE_VMALLOC
601 Process creation and other aspects of virtual memory management can
602 be streamlined if we restrict the kernel to one PGD for all vmalloc
603 allocations. This equates to about 8GB.
605 Under normal circumstances, this is so far and above what is needed
606 as to be laughable. However, there are certain applications (such
607 as benchmark-grade in-kernel web serving) that can make use of as
608 much vmalloc space as is available.
610 Say N unless you know you need gobs and gobs of vmalloc space.
612 config VERBOSE_MCHECK
613 bool "Verbose Machine Checks"
615 config VERBOSE_MCHECK_ON
616 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
617 depends on VERBOSE_MCHECK
620 This option allows the default printing mode to be set, and then
621 possibly overridden by a boot command argument.
623 For example, if one wanted the option of printing verbose
624 machine checks, but wanted the default to be as if verbose
625 machine check printing was turned off, then one would choose
626 the printing mode to be 0. Then, upon reboot, one could add
627 the boot command line "verbose_mcheck=1" to get the normal
628 verbose machine check printing, or "verbose_mcheck=2" to get
629 the maximum information available.
631 Take the default (1) unless you want more control or more info.
635 default 1200 if ALPHA_RAWHIDE
638 source "drivers/pci/Kconfig"
639 source "drivers/eisa/Kconfig"
641 source "drivers/pcmcia/Kconfig"
644 tristate "SRM environment through procfs"
647 If you enable this option, a subdirectory inside /proc called
648 /proc/srm_environment will give you access to the all important
649 SRM environment variables (those which have a name) and also
650 to all others (by their internal number).
652 SRM is something like a BIOS for Alpha machines. There are some
653 other such BIOSes, like AlphaBIOS, which this driver cannot
654 support (hey, that's not SRM!).
656 Despite the fact that this driver doesn't work on all Alphas (but
657 only on those which have SRM as their firmware), it's save to
658 build it even if your particular machine doesn't know about SRM
659 (or if you intend to compile a generic kernel). It will simply
660 not create those subdirectory in /proc (and give you some warning,
663 This driver is also available as a module and will be called
666 source "fs/Kconfig.binfmt"
672 source "drivers/Kconfig"
676 source "arch/alpha/Kconfig.debug"
678 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
679 # but we also need it if VGA_HOSE is set
685 source "security/Kconfig"
687 source "crypto/Kconfig"