2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
11 select HAVE_SYSCALL_WRAPPERS
13 The Alpha is a 64-bit general-purpose processor designed and
14 marketed by the Digital Equipment Corporation of blessed memory,
15 now Hewlett-Packard. The Alpha Linux project has a home page at
16 <http://www.alphalinux.org/>.
25 config RWSEM_GENERIC_SPINLOCK
28 config RWSEM_XCHGADD_ALGORITHM
32 config ARCH_HAS_ILOG2_U32
36 config ARCH_HAS_ILOG2_U64
40 config GENERIC_FIND_NEXT_BIT
44 config GENERIC_CALIBRATE_DELAY
52 config ARCH_USES_GETTIMEOFFSET
60 config GENERIC_ISA_DMA
68 config GENERIC_HARDIRQS
72 config GENERIC_IRQ_PROBE
76 config AUTO_IRQ_AFFINITY
82 source "kernel/Kconfig.freezer"
88 prompt "Alpha system type"
91 This is the system type of your hardware. A "generic" kernel will
92 run on any supported Alpha system. However, if you configure a
93 kernel for your specific system, it will be faster and smaller.
95 To find out what type of Alpha system you have, you may want to
96 check out the Linux/Alpha FAQ, accessible on the WWW from
97 <http://www.alphalinux.org/>. In summary:
99 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
100 Alpha-XL XL-233, XL-266
101 AlphaBook1 Alpha laptop
102 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
103 Cabriolet AlphaPC64, AlphaPCI64
104 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
105 EB164 EB164 21164 evaluation board
106 EB64+ EB64+ 21064 evaluation board
107 EB66 EB66 21066 evaluation board
108 EB66+ EB66+ 21066 evaluation board
109 Jensen DECpc 150, DEC 2000 models 300, 500
112 Miata Personal Workstation 433/500/600 a/au
113 Marvel AlphaServer ES47 / ES80 / GS1280
115 Noname AXPpci33, UDB (Multia)
116 Noritake AS 1000A, AS 600A, AS 800
118 Rawhide AS 1200, AS 4000, AS 4100
119 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
121 Sable AS 2000, AS 2100
124 Titan AlphaServer ES45 / DS25 / DS15
125 Wildfire AlphaServer GS 40/80/160/320
127 If you don't know what to do, choose "generic".
132 A generic kernel will run on all supported Alpha hardware.
135 bool "Alcor/Alpha-XLT"
137 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
138 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
139 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
140 controller (256-bit memory bus) and a PCI interface. It also does
141 all the work required to support an external Bcache and to maintain
142 memory coherence when a PCI device DMAs into (or out of) memory.
147 XL-233 and XL-266-based Alpha systems.
152 Dec AlphaBook1/Burns Alpha-based laptops.
154 config ALPHA_AVANTI_CH
157 config ALPHA_CABRIOLET
160 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
161 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
162 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
163 Bcache SIMMs. Requires power supply with 3.3V output.
168 Various 21264 systems with the tsunami core logic chipset.
169 API Networks: 264DP, UP2000(+), CS20;
170 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
175 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
176 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
177 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
178 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
179 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
180 motherboard. Requires power supply with 3.3V output.
182 config ALPHA_EB64P_CH
188 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
189 identical to EB64+. Baby PC-AT size. Runs from standard PC power
190 supply. The EB66 schematic was published as a marketing poster
191 advertising the 21066 as "the first microprocessor in the world with
197 Later variant of the EB66 board.
202 Apparently an obscure OEM single-board computer based on the
203 Typhoon/Tsunami chipset family. Information on it is scanty.
208 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
209 of the first-generation Alpha systems. A number of these systems
210 seem to be available on the second- hand market. The Jensen is a
211 floor-standing tower system which originally used a 150MHz 21064 It
212 used programmable logic to interface a 486 EISA I/O bridge to the
218 A technical overview of this board is available at
219 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
224 AlphaServer 2100A-based systems.
229 AlphaServer ES47 / ES80 / GS1280 based on EV7.
234 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
240 AlphaServer 1000-based Alpha systems.
242 config ALPHA_NAUTILUS
245 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
247 config ALPHA_NONAME_CH
250 config ALPHA_NORITAKE
253 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
265 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
267 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
272 Samsung APC164UX. There is a page on known problems and workarounds
273 at <http://www.alphalinux.org/faq/FAQ-11.html>.
284 Digital AlphaServer 2000 and 2100-based systems.
292 Alpha 11164-based OEM single-board computer.
297 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
299 config ALPHA_WILDFIRE
302 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
306 # clear all implied options (don't want default values for those):
307 # Most of these machines have ISA slots; not exactly sure which don't,
308 # and this doesn't activate hordes of code, so do it always.
313 Find out whether you have ISA slots on your motherboard. ISA is the
314 name of a bus system, i.e. the way the CPU talks to the other stuff
315 inside your box. Other bus systems are PCI, EISA, MicroChannel
316 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
317 newer boards don't support it. If you have ISA, say Y, otherwise N.
325 depends on !ALPHA_JENSEN
328 Find out whether you have a PCI motherboard. PCI is the name of a
329 bus system, i.e. the way the CPU talks to the other stuff inside
330 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
331 VESA. If you have PCI, say Y, otherwise N.
345 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
348 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
349 UDB). This design was produced by Digital's Technical OEM (TOEM)
350 group. It uses the 21066 processor running at 166MHz or 233MHz. It
351 is a baby-AT size, and runs from a standard PC power supply. It has
352 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
353 2 versions, with either PS/2 or large DIN connectors for the
358 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
359 default y if !ALPHA_LYNX
363 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
368 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
373 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
376 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
377 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
378 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
379 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
380 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
381 Runs from standard PC power supply.
384 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
385 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
389 default y if ALPHA_LYNX && !ALPHA_EV5
393 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
397 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
398 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
401 prompt "EV56 CPU (speed >= 333MHz)?"
402 depends on ALPHA_NORITAKE || ALPHA_PRIMO
405 prompt "EV56 CPU (speed >= 400MHz)?"
406 depends on ALPHA_RAWHIDE
409 bool "EV5 CPU daughtercard (model 5/xxx)?"
410 depends on ALPHA_NORITAKE || ALPHA_MIKASA
412 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
415 bool "EV5 CPU(s) (model 5/xxx)?"
416 depends on ALPHA_SABLE
418 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
422 depends on ALPHA_LYNX
427 depends on ALPHA_SABLE || ALPHA_LYNX
432 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
437 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
442 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
446 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
447 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
449 Is this a machine based on the EV67 core? If in doubt, select N here
450 and the machine will be treated as an EV6.
454 depends on ALPHA_MARVEL
459 depends on ALPHA_RAWHIDE
464 depends on ALPHA_RX164
467 config ALPHA_IRONGATE
469 depends on ALPHA_NAUTILUS
472 config GENERIC_HWEIGHT
474 default y if !ALPHA_EV67
478 depends on ALPHA_XL || ALPHA_AVANTI_CH
481 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
483 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
485 config ALPHA_BROKEN_IRQ_MASK
487 depends on ALPHA_GENERIC || ALPHA_PC164
492 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
495 Support VGA on an arbitrary hose; needed for several platforms
496 which always have multiple hoses, and whose consoles support it.
500 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
501 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
503 There are two different types of booting firmware on Alphas: SRM,
504 which is command line driven, and ARC, which uses menus and arrow
505 keys. Details about the Linux/Alpha booting process are contained in
506 the Linux/Alpha FAQ, accessible on the WWW from
507 <http://www.alphalinux.org/>.
509 The usual way to load Linux on an Alpha machine is to use MILO
510 (a bootloader that lets you pass command line parameters to the
511 kernel just like lilo does for the x86 architecture) which can be
512 loaded either from ARC or can be installed directly as a permanent
513 firmware replacement from floppy (which requires changing a certain
514 jumper on the motherboard). If you want to do either of these, say N
515 here. If MILO doesn't work on your system (true for Jensen
516 motherboards), you can bypass it altogether and boot Linux directly
517 from an SRM console; say Y here in order to do that. Note that you
518 won't be able to boot from an IDE disk using SRM.
524 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
527 config ARCH_MAY_HAVE_PC_FDC
531 bool "Symmetric multi-processing support"
532 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
533 select USE_GENERIC_SMP_HELPERS
535 This enables support for systems with more than one CPU. If you have
536 a system with only one CPU, like most personal computers, say N. If
537 you have a system with more than one CPU, say Y.
539 If you say N here, the kernel will run on single and multiprocessor
540 machines, but will use only one CPU of a multiprocessor machine. If
541 you say Y here, the kernel will run on many, but not all,
542 singleprocessor machines. On a singleprocessor machine, the kernel
543 will run faster if you say N here.
545 See also the SMP-HOWTO available at
546 <http://www.tldp.org/docs.html#howto>.
548 If you don't know what to do here, say N.
556 int "Maximum number of CPUs (2-32)"
559 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
560 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
562 MARVEL support can handle a maximum of 32 CPUs, all the others
563 with working support have a maximum of 4 CPUs.
565 config ARCH_DISCONTIGMEM_ENABLE
566 bool "Discontiguous Memory Support (EXPERIMENTAL)"
567 depends on EXPERIMENTAL
569 Say Y to support efficient handling of discontiguous physical memory,
570 for architectures which are either NUMA (Non-Uniform Memory Access)
571 or have huge holes in the physical address space for other reasons.
572 See <file:Documentation/vm/numa> for more.
577 bool "NUMA Support (EXPERIMENTAL)"
578 depends on DISCONTIGMEM && BROKEN
580 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
581 Access). This option is for configuring high-end multiprocessor
582 server machines. If in doubt, say N.
587 depends on NEED_MULTIPLE_NODES
589 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
590 config ALPHA_LARGE_VMALLOC
593 Process creation and other aspects of virtual memory management can
594 be streamlined if we restrict the kernel to one PGD for all vmalloc
595 allocations. This equates to about 8GB.
597 Under normal circumstances, this is so far and above what is needed
598 as to be laughable. However, there are certain applications (such
599 as benchmark-grade in-kernel web serving) that can make use of as
600 much vmalloc space as is available.
602 Say N unless you know you need gobs and gobs of vmalloc space.
604 config VERBOSE_MCHECK
605 bool "Verbose Machine Checks"
607 config VERBOSE_MCHECK_ON
608 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
609 depends on VERBOSE_MCHECK
612 This option allows the default printing mode to be set, and then
613 possibly overridden by a boot command argument.
615 For example, if one wanted the option of printing verbose
616 machine checks, but wanted the default to be as if verbose
617 machine check printing was turned off, then one would choose
618 the printing mode to be 0. Then, upon reboot, one could add
619 the boot command line "verbose_mcheck=1" to get the normal
620 verbose machine check printing, or "verbose_mcheck=2" to get
621 the maximum information available.
623 Take the default (1) unless you want more control or more info.
627 default 1200 if ALPHA_RAWHIDE
630 source "drivers/pci/Kconfig"
631 source "drivers/eisa/Kconfig"
633 source "drivers/pcmcia/Kconfig"
636 tristate "SRM environment through procfs"
639 If you enable this option, a subdirectory inside /proc called
640 /proc/srm_environment will give you access to the all important
641 SRM environment variables (those which have a name) and also
642 to all others (by their internal number).
644 SRM is something like a BIOS for Alpha machines. There are some
645 other such BIOSes, like AlphaBIOS, which this driver cannot
646 support (hey, that's not SRM!).
648 Despite the fact that this driver doesn't work on all Alphas (but
649 only on those which have SRM as their firmware), it's save to
650 build it even if your particular machine doesn't know about SRM
651 (or if you intend to compile a generic kernel). It will simply
652 not create those subdirectory in /proc (and give you some warning,
655 This driver is also available as a module and will be called
658 source "fs/Kconfig.binfmt"
664 source "drivers/Kconfig"
668 source "arch/alpha/Kconfig.debug"
670 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
671 # but we also need it if VGA_HOSE is set
677 source "security/Kconfig"
679 source "crypto/Kconfig"