2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
11 select HAVE_SYSCALL_WRAPPERS
13 select HAVE_PERF_EVENTS
16 The Alpha is a 64-bit general-purpose processor designed and
17 marketed by the Digital Equipment Corporation of blessed memory,
18 now Hewlett-Packard. The Alpha Linux project has a home page at
19 <http://www.alphalinux.org/>.
28 config RWSEM_GENERIC_SPINLOCK
31 config RWSEM_XCHGADD_ALGORITHM
35 config ARCH_HAS_ILOG2_U32
39 config ARCH_HAS_ILOG2_U64
43 config GENERIC_FIND_NEXT_BIT
47 config GENERIC_CALIBRATE_DELAY
51 config GENERIC_CMOS_UPDATE
58 config NEED_DMA_MAP_STATE
61 config NEED_SG_DMA_LENGTH
64 config GENERIC_ISA_DMA
72 config GENERIC_HARDIRQS
76 config GENERIC_IRQ_PROBE
80 config AUTO_IRQ_AFFINITY
86 source "kernel/Kconfig.freezer"
92 prompt "Alpha system type"
95 This is the system type of your hardware. A "generic" kernel will
96 run on any supported Alpha system. However, if you configure a
97 kernel for your specific system, it will be faster and smaller.
99 To find out what type of Alpha system you have, you may want to
100 check out the Linux/Alpha FAQ, accessible on the WWW from
101 <http://www.alphalinux.org/>. In summary:
103 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
104 Alpha-XL XL-233, XL-266
105 AlphaBook1 Alpha laptop
106 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
107 Cabriolet AlphaPC64, AlphaPCI64
108 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
109 EB164 EB164 21164 evaluation board
110 EB64+ EB64+ 21064 evaluation board
111 EB66 EB66 21066 evaluation board
112 EB66+ EB66+ 21066 evaluation board
113 Jensen DECpc 150, DEC 2000 models 300, 500
116 Miata Personal Workstation 433/500/600 a/au
117 Marvel AlphaServer ES47 / ES80 / GS1280
119 Noname AXPpci33, UDB (Multia)
120 Noritake AS 1000A, AS 600A, AS 800
122 Rawhide AS 1200, AS 4000, AS 4100
123 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
125 Sable AS 2000, AS 2100
128 Titan AlphaServer ES45 / DS25 / DS15
129 Wildfire AlphaServer GS 40/80/160/320
131 If you don't know what to do, choose "generic".
136 A generic kernel will run on all supported Alpha hardware.
139 bool "Alcor/Alpha-XLT"
141 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
142 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
143 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
144 controller (256-bit memory bus) and a PCI interface. It also does
145 all the work required to support an external Bcache and to maintain
146 memory coherence when a PCI device DMAs into (or out of) memory.
151 XL-233 and XL-266-based Alpha systems.
156 Dec AlphaBook1/Burns Alpha-based laptops.
158 config ALPHA_AVANTI_CH
161 config ALPHA_CABRIOLET
164 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
165 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
166 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
167 Bcache SIMMs. Requires power supply with 3.3V output.
172 Various 21264 systems with the tsunami core logic chipset.
173 API Networks: 264DP, UP2000(+), CS20;
174 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
179 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
180 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
181 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
182 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
183 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
184 motherboard. Requires power supply with 3.3V output.
186 config ALPHA_EB64P_CH
192 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
193 identical to EB64+. Baby PC-AT size. Runs from standard PC power
194 supply. The EB66 schematic was published as a marketing poster
195 advertising the 21066 as "the first microprocessor in the world with
201 Later variant of the EB66 board.
206 Apparently an obscure OEM single-board computer based on the
207 Typhoon/Tsunami chipset family. Information on it is scanty.
212 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
213 of the first-generation Alpha systems. A number of these systems
214 seem to be available on the second- hand market. The Jensen is a
215 floor-standing tower system which originally used a 150MHz 21064 It
216 used programmable logic to interface a 486 EISA I/O bridge to the
222 A technical overview of this board is available at
223 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
228 AlphaServer 2100A-based systems.
233 AlphaServer ES47 / ES80 / GS1280 based on EV7.
238 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
244 AlphaServer 1000-based Alpha systems.
246 config ALPHA_NAUTILUS
249 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
251 config ALPHA_NONAME_CH
254 config ALPHA_NORITAKE
257 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
269 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
271 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
276 Samsung APC164UX. There is a page on known problems and workarounds
277 at <http://www.alphalinux.org/faq/FAQ-11.html>.
288 Digital AlphaServer 2000 and 2100-based systems.
296 Alpha 11164-based OEM single-board computer.
301 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
303 config ALPHA_WILDFIRE
306 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
310 # clear all implied options (don't want default values for those):
311 # Most of these machines have ISA slots; not exactly sure which don't,
312 # and this doesn't activate hordes of code, so do it always.
317 Find out whether you have ISA slots on your motherboard. ISA is the
318 name of a bus system, i.e. the way the CPU talks to the other stuff
319 inside your box. Other bus systems are PCI, EISA, MicroChannel
320 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
321 newer boards don't support it. If you have ISA, say Y, otherwise N.
329 depends on !ALPHA_JENSEN
332 Find out whether you have a PCI motherboard. PCI is the name of a
333 bus system, i.e. the way the CPU talks to the other stuff inside
334 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
335 VESA. If you have PCI, say Y, otherwise N.
349 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
352 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
353 UDB). This design was produced by Digital's Technical OEM (TOEM)
354 group. It uses the 21066 processor running at 166MHz or 233MHz. It
355 is a baby-AT size, and runs from a standard PC power supply. It has
356 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
357 2 versions, with either PS/2 or large DIN connectors for the
362 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
363 default y if !ALPHA_LYNX
367 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
372 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
377 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
380 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
381 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
382 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
383 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
384 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
385 Runs from standard PC power supply.
388 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
389 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
393 default y if ALPHA_LYNX && !ALPHA_EV5
397 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
401 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
402 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
405 prompt "EV56 CPU (speed >= 333MHz)?"
406 depends on ALPHA_NORITAKE || ALPHA_PRIMO
409 prompt "EV56 CPU (speed >= 400MHz)?"
410 depends on ALPHA_RAWHIDE
413 bool "EV5 CPU daughtercard (model 5/xxx)?"
414 depends on ALPHA_NORITAKE || ALPHA_MIKASA
416 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
419 bool "EV5 CPU(s) (model 5/xxx)?"
420 depends on ALPHA_SABLE
422 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
426 depends on ALPHA_LYNX
431 depends on ALPHA_SABLE || ALPHA_LYNX
436 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
441 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
446 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
450 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
451 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
453 Is this a machine based on the EV67 core? If in doubt, select N here
454 and the machine will be treated as an EV6.
458 depends on ALPHA_MARVEL
463 depends on ALPHA_RAWHIDE
468 depends on ALPHA_RX164
471 config ALPHA_IRONGATE
473 depends on ALPHA_NAUTILUS
476 config GENERIC_HWEIGHT
478 default y if !ALPHA_EV67
482 depends on ALPHA_XL || ALPHA_AVANTI_CH
485 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
487 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
489 config ALPHA_BROKEN_IRQ_MASK
491 depends on ALPHA_GENERIC || ALPHA_PC164
496 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
499 Support VGA on an arbitrary hose; needed for several platforms
500 which always have multiple hoses, and whose consoles support it.
504 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
505 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
507 There are two different types of booting firmware on Alphas: SRM,
508 which is command line driven, and ARC, which uses menus and arrow
509 keys. Details about the Linux/Alpha booting process are contained in
510 the Linux/Alpha FAQ, accessible on the WWW from
511 <http://www.alphalinux.org/>.
513 The usual way to load Linux on an Alpha machine is to use MILO
514 (a bootloader that lets you pass command line parameters to the
515 kernel just like lilo does for the x86 architecture) which can be
516 loaded either from ARC or can be installed directly as a permanent
517 firmware replacement from floppy (which requires changing a certain
518 jumper on the motherboard). If you want to do either of these, say N
519 here. If MILO doesn't work on your system (true for Jensen
520 motherboards), you can bypass it altogether and boot Linux directly
521 from an SRM console; say Y here in order to do that. Note that you
522 won't be able to boot from an IDE disk using SRM.
528 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
531 config ARCH_MAY_HAVE_PC_FDC
535 bool "Symmetric multi-processing support"
536 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
537 select USE_GENERIC_SMP_HELPERS
539 This enables support for systems with more than one CPU. If you have
540 a system with only one CPU, like most personal computers, say N. If
541 you have a system with more than one CPU, say Y.
543 If you say N here, the kernel will run on single and multiprocessor
544 machines, but will use only one CPU of a multiprocessor machine. If
545 you say Y here, the kernel will run on many, but not all,
546 singleprocessor machines. On a singleprocessor machine, the kernel
547 will run faster if you say N here.
549 See also the SMP-HOWTO available at
550 <http://www.tldp.org/docs.html#howto>.
552 If you don't know what to do here, say N.
560 int "Maximum number of CPUs (2-32)"
563 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
564 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
566 MARVEL support can handle a maximum of 32 CPUs, all the others
567 with working support have a maximum of 4 CPUs.
569 config ARCH_DISCONTIGMEM_ENABLE
570 bool "Discontiguous Memory Support (EXPERIMENTAL)"
571 depends on EXPERIMENTAL
573 Say Y to support efficient handling of discontiguous physical memory,
574 for architectures which are either NUMA (Non-Uniform Memory Access)
575 or have huge holes in the physical address space for other reasons.
576 See <file:Documentation/vm/numa> for more.
581 bool "NUMA Support (EXPERIMENTAL)"
582 depends on DISCONTIGMEM && BROKEN
584 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
585 Access). This option is for configuring high-end multiprocessor
586 server machines. If in doubt, say N.
591 depends on NEED_MULTIPLE_NODES
593 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
594 config ALPHA_LARGE_VMALLOC
597 Process creation and other aspects of virtual memory management can
598 be streamlined if we restrict the kernel to one PGD for all vmalloc
599 allocations. This equates to about 8GB.
601 Under normal circumstances, this is so far and above what is needed
602 as to be laughable. However, there are certain applications (such
603 as benchmark-grade in-kernel web serving) that can make use of as
604 much vmalloc space as is available.
606 Say N unless you know you need gobs and gobs of vmalloc space.
608 config VERBOSE_MCHECK
609 bool "Verbose Machine Checks"
611 config VERBOSE_MCHECK_ON
612 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
613 depends on VERBOSE_MCHECK
616 This option allows the default printing mode to be set, and then
617 possibly overridden by a boot command argument.
619 For example, if one wanted the option of printing verbose
620 machine checks, but wanted the default to be as if verbose
621 machine check printing was turned off, then one would choose
622 the printing mode to be 0. Then, upon reboot, one could add
623 the boot command line "verbose_mcheck=1" to get the normal
624 verbose machine check printing, or "verbose_mcheck=2" to get
625 the maximum information available.
627 Take the default (1) unless you want more control or more info.
631 default 1200 if ALPHA_RAWHIDE
634 source "drivers/pci/Kconfig"
635 source "drivers/eisa/Kconfig"
637 source "drivers/pcmcia/Kconfig"
640 tristate "SRM environment through procfs"
643 If you enable this option, a subdirectory inside /proc called
644 /proc/srm_environment will give you access to the all important
645 SRM environment variables (those which have a name) and also
646 to all others (by their internal number).
648 SRM is something like a BIOS for Alpha machines. There are some
649 other such BIOSes, like AlphaBIOS, which this driver cannot
650 support (hey, that's not SRM!).
652 Despite the fact that this driver doesn't work on all Alphas (but
653 only on those which have SRM as their firmware), it's save to
654 build it even if your particular machine doesn't know about SRM
655 (or if you intend to compile a generic kernel). It will simply
656 not create those subdirectory in /proc (and give you some warning,
659 This driver is also available as a module and will be called
662 source "fs/Kconfig.binfmt"
668 source "drivers/Kconfig"
672 source "arch/alpha/Kconfig.debug"
674 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
675 # but we also need it if VGA_HOSE is set
681 source "security/Kconfig"
683 source "crypto/Kconfig"