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 GENERIC_ISA_DMA
60 config GENERIC_HARDIRQS
64 config GENERIC_IRQ_PROBE
68 config AUTO_IRQ_AFFINITY
73 config HAVE_LEGACY_PER_CPU_AREA
77 source "kernel/Kconfig.freezer"
83 prompt "Alpha system type"
86 This is the system type of your hardware. A "generic" kernel will
87 run on any supported Alpha system. However, if you configure a
88 kernel for your specific system, it will be faster and smaller.
90 To find out what type of Alpha system you have, you may want to
91 check out the Linux/Alpha FAQ, accessible on the WWW from
92 <http://www.alphalinux.org/>. In summary:
94 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
95 Alpha-XL XL-233, XL-266
96 AlphaBook1 Alpha laptop
97 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
98 Cabriolet AlphaPC64, AlphaPCI64
99 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
100 EB164 EB164 21164 evaluation board
101 EB64+ EB64+ 21064 evaluation board
102 EB66 EB66 21066 evaluation board
103 EB66+ EB66+ 21066 evaluation board
104 Jensen DECpc 150, DEC 2000 models 300, 500
107 Miata Personal Workstation 433/500/600 a/au
108 Marvel AlphaServer ES47 / ES80 / GS1280
110 Noname AXPpci33, UDB (Multia)
111 Noritake AS 1000A, AS 600A, AS 800
113 Rawhide AS 1200, AS 4000, AS 4100
114 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
116 Sable AS 2000, AS 2100
119 Titan AlphaServer ES45 / DS25 / DS15
120 Wildfire AlphaServer GS 40/80/160/320
122 If you don't know what to do, choose "generic".
127 A generic kernel will run on all supported Alpha hardware.
130 bool "Alcor/Alpha-XLT"
132 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
133 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
134 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
135 controller (256-bit memory bus) and a PCI interface. It also does
136 all the work required to support an external Bcache and to maintain
137 memory coherence when a PCI device DMAs into (or out of) memory.
142 XL-233 and XL-266-based Alpha systems.
147 Dec AlphaBook1/Burns Alpha-based laptops.
149 config ALPHA_AVANTI_CH
152 config ALPHA_CABRIOLET
155 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
156 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
157 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
158 Bcache SIMMs. Requires power supply with 3.3V output.
163 Various 21264 systems with the tsunami core logic chipset.
164 API Networks: 264DP, UP2000(+), CS20;
165 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
170 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
171 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
172 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
173 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
174 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
175 motherboard. Requires power supply with 3.3V output.
177 config ALPHA_EB64P_CH
183 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
184 identical to EB64+. Baby PC-AT size. Runs from standard PC power
185 supply. The EB66 schematic was published as a marketing poster
186 advertising the 21066 as "the first microprocessor in the world with
192 Later variant of the EB66 board.
197 Apparently an obscure OEM single-board computer based on the
198 Typhoon/Tsunami chipset family. Information on it is scanty.
203 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
204 of the first-generation Alpha systems. A number of these systems
205 seem to be available on the second- hand market. The Jensen is a
206 floor-standing tower system which originally used a 150MHz 21064 It
207 used programmable logic to interface a 486 EISA I/O bridge to the
213 A technical overview of this board is available at
214 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
219 AlphaServer 2100A-based systems.
224 AlphaServer ES47 / ES80 / GS1280 based on EV7.
229 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
235 AlphaServer 1000-based Alpha systems.
237 config ALPHA_NAUTILUS
240 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
242 config ALPHA_NONAME_CH
245 config ALPHA_NORITAKE
248 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
260 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
262 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
267 Samsung APC164UX. There is a page on known problems and workarounds
268 at <http://www.alphalinux.org/faq/FAQ-11.html>.
279 Digital AlphaServer 2000 and 2100-based systems.
287 Alpha 11164-based OEM single-board computer.
292 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
294 config ALPHA_WILDFIRE
297 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
301 # clear all implied options (don't want default values for those):
302 # Most of these machines have ISA slots; not exactly sure which don't,
303 # and this doesn't activate hordes of code, so do it always.
308 Find out whether you have ISA slots on your motherboard. ISA is the
309 name of a bus system, i.e. the way the CPU talks to the other stuff
310 inside your box. Other bus systems are PCI, EISA, MicroChannel
311 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
312 newer boards don't support it. If you have ISA, say Y, otherwise N.
320 depends on !ALPHA_JENSEN
323 Find out whether you have a PCI motherboard. PCI is the name of a
324 bus system, i.e. the way the CPU talks to the other stuff inside
325 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
326 VESA. If you have PCI, say Y, otherwise N.
340 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
343 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
344 UDB). This design was produced by Digital's Technical OEM (TOEM)
345 group. It uses the 21066 processor running at 166MHz or 233MHz. It
346 is a baby-AT size, and runs from a standard PC power supply. It has
347 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
348 2 versions, with either PS/2 or large DIN connectors for the
353 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
354 default y if !ALPHA_LYNX
358 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
363 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
368 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
371 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
372 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
373 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
374 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
375 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
376 Runs from standard PC power supply.
379 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
380 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
384 default y if ALPHA_LYNX && !ALPHA_EV5
388 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
392 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
393 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
396 prompt "EV56 CPU (speed >= 333MHz)?"
397 depends on ALPHA_NORITAKE || ALPHA_PRIMO
400 prompt "EV56 CPU (speed >= 400MHz)?"
401 depends on ALPHA_RAWHIDE
404 bool "EV5 CPU daughtercard (model 5/xxx)?"
405 depends on ALPHA_NORITAKE || ALPHA_MIKASA
407 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
410 bool "EV5 CPU(s) (model 5/xxx)?"
411 depends on ALPHA_SABLE
413 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
417 depends on ALPHA_LYNX
422 depends on ALPHA_SABLE || ALPHA_LYNX
427 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
432 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
437 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
441 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
442 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
444 Is this a machine based on the EV67 core? If in doubt, select N here
445 and the machine will be treated as an EV6.
449 depends on ALPHA_MARVEL
454 depends on ALPHA_RAWHIDE
459 depends on ALPHA_RX164
462 config ALPHA_IRONGATE
464 depends on ALPHA_NAUTILUS
467 config GENERIC_HWEIGHT
469 default y if !ALPHA_EV67
473 depends on ALPHA_XL || ALPHA_AVANTI_CH
476 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
478 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
480 config ALPHA_BROKEN_IRQ_MASK
482 depends on ALPHA_GENERIC || ALPHA_PC164
487 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
490 Support VGA on an arbitrary hose; needed for several platforms
491 which always have multiple hoses, and whose consoles support it.
495 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
496 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
498 There are two different types of booting firmware on Alphas: SRM,
499 which is command line driven, and ARC, which uses menus and arrow
500 keys. Details about the Linux/Alpha booting process are contained in
501 the Linux/Alpha FAQ, accessible on the WWW from
502 <http://www.alphalinux.org/>.
504 The usual way to load Linux on an Alpha machine is to use MILO
505 (a bootloader that lets you pass command line parameters to the
506 kernel just like lilo does for the x86 architecture) which can be
507 loaded either from ARC or can be installed directly as a permanent
508 firmware replacement from floppy (which requires changing a certain
509 jumper on the motherboard). If you want to do either of these, say N
510 here. If MILO doesn't work on your system (true for Jensen
511 motherboards), you can bypass it altogether and boot Linux directly
512 from an SRM console; say Y here in order to do that. Note that you
513 won't be able to boot from an IDE disk using SRM.
519 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
522 config ARCH_MAY_HAVE_PC_FDC
526 bool "Symmetric multi-processing support"
527 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
528 select USE_GENERIC_SMP_HELPERS
530 This enables support for systems with more than one CPU. If you have
531 a system with only one CPU, like most personal computers, say N. If
532 you have a system with more than one CPU, say Y.
534 If you say N here, the kernel will run on single and multiprocessor
535 machines, but will use only one CPU of a multiprocessor machine. If
536 you say Y here, the kernel will run on many, but not all,
537 singleprocessor machines. On a singleprocessor machine, the kernel
538 will run faster if you say N here.
540 See also the SMP-HOWTO available at
541 <http://www.tldp.org/docs.html#howto>.
543 If you don't know what to do here, say N.
551 int "Maximum number of CPUs (2-32)"
554 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
555 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
557 MARVEL support can handle a maximum of 32 CPUs, all the others
558 with working support have a maximum of 4 CPUs.
560 config ARCH_DISCONTIGMEM_ENABLE
561 bool "Discontiguous Memory Support (EXPERIMENTAL)"
562 depends on EXPERIMENTAL
564 Say Y to support efficient handling of discontiguous physical memory,
565 for architectures which are either NUMA (Non-Uniform Memory Access)
566 or have huge holes in the physical address space for other reasons.
567 See <file:Documentation/vm/numa> for more.
572 bool "NUMA Support (EXPERIMENTAL)"
573 depends on DISCONTIGMEM && BROKEN
575 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
576 Access). This option is for configuring high-end multiprocessor
577 server machines. If in doubt, say N.
582 depends on NEED_MULTIPLE_NODES
584 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
585 config ALPHA_LARGE_VMALLOC
588 Process creation and other aspects of virtual memory management can
589 be streamlined if we restrict the kernel to one PGD for all vmalloc
590 allocations. This equates to about 8GB.
592 Under normal circumstances, this is so far and above what is needed
593 as to be laughable. However, there are certain applications (such
594 as benchmark-grade in-kernel web serving) that can make use of as
595 much vmalloc space as is available.
597 Say N unless you know you need gobs and gobs of vmalloc space.
599 config VERBOSE_MCHECK
600 bool "Verbose Machine Checks"
602 config VERBOSE_MCHECK_ON
603 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
604 depends on VERBOSE_MCHECK
607 This option allows the default printing mode to be set, and then
608 possibly overridden by a boot command argument.
610 For example, if one wanted the option of printing verbose
611 machine checks, but wanted the default to be as if verbose
612 machine check printing was turned off, then one would choose
613 the printing mode to be 0. Then, upon reboot, one could add
614 the boot command line "verbose_mcheck=1" to get the normal
615 verbose machine check printing, or "verbose_mcheck=2" to get
616 the maximum information available.
618 Take the default (1) unless you want more control or more info.
622 default 1200 if ALPHA_RAWHIDE
625 source "drivers/pci/Kconfig"
626 source "drivers/eisa/Kconfig"
628 source "drivers/pcmcia/Kconfig"
631 tristate "SRM environment through procfs"
634 If you enable this option, a subdirectory inside /proc called
635 /proc/srm_environment will give you access to the all important
636 SRM environment variables (those which have a name) and also
637 to all others (by their internal number).
639 SRM is something like a BIOS for Alpha machines. There are some
640 other such BIOSes, like AlphaBIOS, which this driver cannot
641 support (hey, that's not SRM!).
643 Despite the fact that this driver doesn't work on all Alphas (but
644 only on those which have SRM as their firmware), it's save to
645 build it even if your particular machine doesn't know about SRM
646 (or if you intend to compile a generic kernel). It will simply
647 not create those subdirectory in /proc (and give you some warning,
650 This driver is also available as a module and will be called
653 source "fs/Kconfig.binfmt"
659 source "drivers/Kconfig"
663 source "arch/alpha/Kconfig.debug"
665 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
666 # but we also need it if VGA_HOSE is set
672 source "security/Kconfig"
674 source "crypto/Kconfig"