2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
9 The Alpha is a 64-bit general-purpose processor designed and
10 marketed by the Digital Equipment Corporation of blessed memory,
11 now Hewlett-Packard. The Alpha Linux project has a home page at
12 <http://www.alphalinux.org/>.
21 config RWSEM_GENERIC_SPINLOCK
24 config RWSEM_XCHGADD_ALGORITHM
28 config GENERIC_FIND_NEXT_BIT
32 config GENERIC_CALIBRATE_DELAY
36 config GENERIC_ISA_DMA
44 config GENERIC_HARDIRQS
48 config GENERIC_IRQ_PROBE
52 config AUTO_IRQ_AFFINITY
63 prompt "Alpha system type"
66 This is the system type of your hardware. A "generic" kernel will
67 run on any supported Alpha system. However, if you configure a
68 kernel for your specific system, it will be faster and smaller.
70 To find out what type of Alpha system you have, you may want to
71 check out the Linux/Alpha FAQ, accessible on the WWW from
72 <http://www.alphalinux.org/>. In summary:
74 Alcor/Alpha-XLT AS 600
75 Alpha-XL XL-233, XL-266
76 AlphaBook1 Alpha laptop
77 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
78 Cabriolet AlphaPC64, AlphaPCI64
80 EB164 EB164 21164 evaluation board
81 EB64+ EB64+ 21064 evaluation board
82 EB66 EB66 21066 evaluation board
83 EB66+ EB66+ 21066 evaluation board
84 Jensen DECpc 150, DEC 2000 model 300,
88 Miata Personal Workstation 433a, 433au, 500a,
90 Marvel AlphaServer ES47 / ES80 / GS1280
92 Noname AXPpci33, UDB (Multia)
93 Noritake AS 1000A, AS 600A, AS 800
95 Rawhide AS 1200, AS 4000, AS 4100
96 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
98 Sable AS 2000, AS 2100
101 Titan AlphaServer ES45 / DS25
102 Wildfire AlphaServer GS 40/80/160/320
104 If you don't know what to do, choose "generic".
109 A generic kernel will run on all supported Alpha hardware.
112 bool "Alcor/Alpha-XLT"
114 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
115 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
116 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
117 controller (256-bit memory bus) and a PCI interface. It also does
118 all the work required to support an external Bcache and to maintain
119 memory coherence when a PCI device DMAs into (or out of) memory.
124 XL-233 and XL-266-based Alpha systems.
129 Dec AlphaBook1/Burns Alpha-based laptops.
131 config ALPHA_AVANTI_CH
134 config ALPHA_CABRIOLET
137 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
138 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
139 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
140 Bcache SIMMs. Requires power supply with 3.3V output.
145 Various 21264 systems with the tsunami core logic chipset.
146 API Networks: 264DP, UP2000(+), CS20;
147 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
152 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
153 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
154 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
155 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
156 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
157 motherboard. Requires power supply with 3.3V output.
159 config ALPHA_EB64P_CH
165 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
166 identical to EB64+. Baby PC-AT size. Runs from standard PC power
167 supply. The EB66 schematic was published as a marketing poster
168 advertising the 21066 as "the first microprocessor in the world with
174 Later variant of the EB66 board.
179 Apparently an obscure OEM single-board computer based on the
180 Typhoon/Tsunami chipset family. Information on it is scanty.
185 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
186 of the first-generation Alpha systems. A number of these systems
187 seem to be available on the second- hand market. The Jensen is a
188 floor-standing tower system which originally used a 150MHz 21064 It
189 used programmable logic to interface a 486 EISA I/O bridge to the
195 A technical overview of this board is available at
196 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
201 AlphaServer 2100A-based systems.
206 AlphaServer ES47 / ES80 / GS1280 based on EV7.
211 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
212 or 600au). There is an Installation HOWTO for this hardware at
213 <http://eijk.homelinux.org/~stefan/miata.html>.
218 AlphaServer 1000-based Alpha systems.
220 config ALPHA_NAUTILUS
223 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
225 config ALPHA_NONAME_CH
228 config ALPHA_NORITAKE
231 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
243 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
245 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
250 Samsung APC164UX. There is a page on known problems and workarounds
251 at <http://www.alphalinux.org/faq/FAQ-11.html>.
262 Digital AlphaServer 2000 and 2100-based systems.
270 Alpha 11164-based OEM single-board computer.
275 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
277 config ALPHA_WILDFIRE
280 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
284 # clear all implied options (don't want default values for those):
285 # Most of these machines have ISA slots; not exactly sure which don't,
286 # and this doesn't activate hordes of code, so do it always.
291 Find out whether you have ISA slots on your motherboard. ISA is the
292 name of a bus system, i.e. the way the CPU talks to the other stuff
293 inside your box. Other bus systems are PCI, EISA, MicroChannel
294 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
295 newer boards don't support it. If you have ISA, say Y, otherwise N.
303 depends on !ALPHA_JENSEN
306 Find out whether you have a PCI motherboard. PCI is the name of a
307 bus system, i.e. the way the CPU talks to the other stuff inside
308 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
309 VESA. If you have PCI, say Y, otherwise N.
311 The PCI-HOWTO, available from
312 <http://www.tldp.org/docs.html#howto>, contains valuable
313 information about which PCI hardware does work under Linux and which
320 config ALPHA_CORE_AGP
322 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL
327 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
330 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
331 UDB). This design was produced by Digital's Technical OEM (TOEM)
332 group. It uses the 21066 processor running at 166MHz or 233MHz. It
333 is a baby-AT size, and runs from a standard PC power supply. It has
334 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
335 2 versions, with either PS/2 or large DIN connectors for the
340 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
341 default y if !ALPHA_LYNX
345 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
350 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
355 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
358 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
359 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
360 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
361 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
362 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
363 Runs from standard PC power supply.
366 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
367 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
371 default y if ALPHA_LYNX && !ALPHA_EV5
375 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
379 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
380 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
383 prompt "EV56 CPU (speed >= 333MHz)?"
384 depends on ALPHA_NORITAKE && ALPHA_PRIMO
387 prompt "EV56 CPU (speed >= 400MHz)?"
388 depends on ALPHA_RAWHIDE
391 bool "EV5 CPU daughtercard (model 5/xxx)?"
392 depends on ALPHA_NORITAKE || ALPHA_MIKASA
394 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
397 bool "EV5 CPU(s) (model 5/xxx)?"
398 depends on ALPHA_SABLE
400 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
404 depends on ALPHA_LYNX
409 depends on ALPHA_SABLE || ALPHA_LYNX
414 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
419 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
424 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
428 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
429 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
431 Is this a machine based on the EV67 core? If in doubt, select N here
432 and the machine will be treated as an EV6.
436 depends on ALPHA_MARVEL
441 depends on ALPHA_RAWHIDE
446 depends on ALPHA_RX164
449 config ALPHA_IRONGATE
451 depends on ALPHA_NAUTILUS
454 config GENERIC_HWEIGHT
456 default y if !ALPHA_EV6 && !ALPHA_EV67
460 depends on ALPHA_XL || ALPHA_AVANTI_CH
463 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
465 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
467 config ALPHA_BROKEN_IRQ_MASK
469 depends on ALPHA_GENERIC || ALPHA_PC164
473 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
474 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
476 There are two different types of booting firmware on Alphas: SRM,
477 which is command line driven, and ARC, which uses menus and arrow
478 keys. Details about the Linux/Alpha booting process are contained in
479 the Linux/Alpha FAQ, accessible on the WWW from
480 <http://www.alphalinux.org/>.
482 The usual way to load Linux on an Alpha machine is to use MILO
483 (a bootloader that lets you pass command line parameters to the
484 kernel just like lilo does for the x86 architecture) which can be
485 loaded either from ARC or can be installed directly as a permanent
486 firmware replacement from floppy (which requires changing a certain
487 jumper on the motherboard). If you want to do either of these, say N
488 here. If MILO doesn't work on your system (true for Jensen
489 motherboards), you can bypass it altogether and boot Linux directly
490 from an SRM console; say Y here in order to do that. Note that you
491 won't be able to boot from an IDE disk using SRM.
497 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
500 config ARCH_MAY_HAVE_PC_FDC
504 bool "Symmetric multi-processing support"
505 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
507 This enables support for systems with more than one CPU. If you have
508 a system with only one CPU, like most personal computers, say N. If
509 you have a system with more than one CPU, say Y.
511 If you say N here, the kernel will run on single and multiprocessor
512 machines, but will use only one CPU of a multiprocessor machine. If
513 you say Y here, the kernel will run on many, but not all,
514 singleprocessor machines. On a singleprocessor machine, the kernel
515 will run faster if you say N here.
517 See also the <file:Documentation/smp.txt>, and the SMP-HOWTO
518 available at <http://www.tldp.org/docs.html#howto>.
520 If you don't know what to do here, say N.
528 int "Maximum number of CPUs (2-64)"
533 config ARCH_DISCONTIGMEM_ENABLE
534 bool "Discontiguous Memory Support (EXPERIMENTAL)"
535 depends on EXPERIMENTAL
537 Say Y to upport efficient handling of discontiguous physical memory,
538 for architectures which are either NUMA (Non-Uniform Memory Access)
539 or have huge holes in the physical address space for other reasons.
540 See <file:Documentation/vm/numa> for more.
545 bool "NUMA Support (EXPERIMENTAL)"
546 depends on DISCONTIGMEM && BROKEN
548 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
549 Access). This option is for configuring high-end multiprocessor
550 server machines. If in doubt, say N.
555 depends on NEED_MULTIPLE_NODES
557 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
558 config ALPHA_LARGE_VMALLOC
561 Process creation and other aspects of virtual memory management can
562 be streamlined if we restrict the kernel to one PGD for all vmalloc
563 allocations. This equates to about 8GB.
565 Under normal circumstances, this is so far and above what is needed
566 as to be laughable. However, there are certain applications (such
567 as benchmark-grade in-kernel web serving) that can make use of as
568 much vmalloc space as is available.
570 Say N unless you know you need gobs and gobs of vmalloc space.
572 config VERBOSE_MCHECK
573 bool "Verbose Machine Checks"
575 config VERBOSE_MCHECK_ON
576 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
577 depends on VERBOSE_MCHECK
580 This option allows the default printing mode to be set, and then
581 possibly overridden by a boot command argument.
583 For example, if one wanted the option of printing verbose
584 machine checks, but wanted the default to be as if verbose
585 machine check printing was turned off, then one would choose
586 the printing mode to be 0. Then, upon reboot, one could add
587 the boot command line "verbose_mcheck=1" to get the normal
588 verbose machine check printing, or "verbose_mcheck=2" to get
589 the maximum information available.
591 Take the default (1) unless you want more control or more info.
593 source "drivers/pci/Kconfig"
594 source "drivers/eisa/Kconfig"
596 source "drivers/pcmcia/Kconfig"
599 tristate "SRM environment through procfs"
602 If you enable this option, a subdirectory inside /proc called
603 /proc/srm_environment will give you access to the all important
604 SRM environment variables (those which have a name) and also
605 to all others (by their internal number).
607 SRM is something like a BIOS for Alpha machines. There are some
608 other such BIOSes, like AlphaBIOS, which this driver cannot
609 support (hey, that's not SRM!).
611 Despite the fact that this driver doesn't work on all Alphas (but
612 only on those which have SRM as their firmware), it's save to
613 build it even if your particular machine doesn't know about SRM
614 (or if you intend to compile a generic kernel). It will simply
615 not create those subdirectory in /proc (and give you some warning,
618 This driver is also available as a module and will be called
621 source "fs/Kconfig.binfmt"
627 source "drivers/Kconfig"
631 source "arch/alpha/oprofile/Kconfig"
633 source "arch/alpha/Kconfig.debug"
635 source "security/Kconfig"
637 source "crypto/Kconfig"