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
14 The Alpha is a 64-bit general-purpose processor designed and
15 marketed by the Digital Equipment Corporation of blessed memory,
16 now Hewlett-Packard. The Alpha Linux project has a home page at
17 <http://www.alphalinux.org/>.
26 config RWSEM_GENERIC_SPINLOCK
29 config RWSEM_XCHGADD_ALGORITHM
33 config ARCH_HAS_ILOG2_U32
37 config ARCH_HAS_ILOG2_U64
41 config GENERIC_FIND_NEXT_BIT
45 config GENERIC_CALIBRATE_DELAY
53 config ARCH_USES_GETTIMEOFFSET
61 config GENERIC_ISA_DMA
69 config GENERIC_HARDIRQS
73 config GENERIC_IRQ_PROBE
77 config AUTO_IRQ_AFFINITY
83 source "kernel/Kconfig.freezer"
89 prompt "Alpha system type"
92 This is the system type of your hardware. A "generic" kernel will
93 run on any supported Alpha system. However, if you configure a
94 kernel for your specific system, it will be faster and smaller.
96 To find out what type of Alpha system you have, you may want to
97 check out the Linux/Alpha FAQ, accessible on the WWW from
98 <http://www.alphalinux.org/>. In summary:
100 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
101 Alpha-XL XL-233, XL-266
102 AlphaBook1 Alpha laptop
103 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
104 Cabriolet AlphaPC64, AlphaPCI64
105 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
106 EB164 EB164 21164 evaluation board
107 EB64+ EB64+ 21064 evaluation board
108 EB66 EB66 21066 evaluation board
109 EB66+ EB66+ 21066 evaluation board
110 Jensen DECpc 150, DEC 2000 models 300, 500
113 Miata Personal Workstation 433/500/600 a/au
114 Marvel AlphaServer ES47 / ES80 / GS1280
116 Noname AXPpci33, UDB (Multia)
117 Noritake AS 1000A, AS 600A, AS 800
119 Rawhide AS 1200, AS 4000, AS 4100
120 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
122 Sable AS 2000, AS 2100
125 Titan AlphaServer ES45 / DS25 / DS15
126 Wildfire AlphaServer GS 40/80/160/320
128 If you don't know what to do, choose "generic".
133 A generic kernel will run on all supported Alpha hardware.
136 bool "Alcor/Alpha-XLT"
138 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
139 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
140 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
141 controller (256-bit memory bus) and a PCI interface. It also does
142 all the work required to support an external Bcache and to maintain
143 memory coherence when a PCI device DMAs into (or out of) memory.
148 XL-233 and XL-266-based Alpha systems.
153 Dec AlphaBook1/Burns Alpha-based laptops.
155 config ALPHA_AVANTI_CH
158 config ALPHA_CABRIOLET
161 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
162 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
163 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
164 Bcache SIMMs. Requires power supply with 3.3V output.
169 Various 21264 systems with the tsunami core logic chipset.
170 API Networks: 264DP, UP2000(+), CS20;
171 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
176 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
177 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
178 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
179 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
180 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
181 motherboard. Requires power supply with 3.3V output.
183 config ALPHA_EB64P_CH
189 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
190 identical to EB64+. Baby PC-AT size. Runs from standard PC power
191 supply. The EB66 schematic was published as a marketing poster
192 advertising the 21066 as "the first microprocessor in the world with
198 Later variant of the EB66 board.
203 Apparently an obscure OEM single-board computer based on the
204 Typhoon/Tsunami chipset family. Information on it is scanty.
209 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
210 of the first-generation Alpha systems. A number of these systems
211 seem to be available on the second- hand market. The Jensen is a
212 floor-standing tower system which originally used a 150MHz 21064 It
213 used programmable logic to interface a 486 EISA I/O bridge to the
219 A technical overview of this board is available at
220 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
225 AlphaServer 2100A-based systems.
230 AlphaServer ES47 / ES80 / GS1280 based on EV7.
235 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
241 AlphaServer 1000-based Alpha systems.
243 config ALPHA_NAUTILUS
246 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
248 config ALPHA_NONAME_CH
251 config ALPHA_NORITAKE
254 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
266 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
268 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
273 Samsung APC164UX. There is a page on known problems and workarounds
274 at <http://www.alphalinux.org/faq/FAQ-11.html>.
285 Digital AlphaServer 2000 and 2100-based systems.
293 Alpha 11164-based OEM single-board computer.
298 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
300 config ALPHA_WILDFIRE
303 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
307 # clear all implied options (don't want default values for those):
308 # Most of these machines have ISA slots; not exactly sure which don't,
309 # and this doesn't activate hordes of code, so do it always.
314 Find out whether you have ISA slots on your motherboard. ISA is the
315 name of a bus system, i.e. the way the CPU talks to the other stuff
316 inside your box. Other bus systems are PCI, EISA, MicroChannel
317 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
318 newer boards don't support it. If you have ISA, say Y, otherwise N.
326 depends on !ALPHA_JENSEN
329 Find out whether you have a PCI motherboard. PCI is the name of a
330 bus system, i.e. the way the CPU talks to the other stuff inside
331 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
332 VESA. If you have PCI, say Y, otherwise N.
346 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
349 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
350 UDB). This design was produced by Digital's Technical OEM (TOEM)
351 group. It uses the 21066 processor running at 166MHz or 233MHz. It
352 is a baby-AT size, and runs from a standard PC power supply. It has
353 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
354 2 versions, with either PS/2 or large DIN connectors for the
359 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
360 default y if !ALPHA_LYNX
364 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
369 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
374 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
377 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
378 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
379 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
380 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
381 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
382 Runs from standard PC power supply.
385 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
386 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
390 default y if ALPHA_LYNX && !ALPHA_EV5
394 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
398 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
399 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
402 prompt "EV56 CPU (speed >= 333MHz)?"
403 depends on ALPHA_NORITAKE || ALPHA_PRIMO
406 prompt "EV56 CPU (speed >= 400MHz)?"
407 depends on ALPHA_RAWHIDE
410 bool "EV5 CPU daughtercard (model 5/xxx)?"
411 depends on ALPHA_NORITAKE || ALPHA_MIKASA
413 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
416 bool "EV5 CPU(s) (model 5/xxx)?"
417 depends on ALPHA_SABLE
419 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
423 depends on ALPHA_LYNX
428 depends on ALPHA_SABLE || ALPHA_LYNX
433 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
438 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
443 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
447 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
448 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
450 Is this a machine based on the EV67 core? If in doubt, select N here
451 and the machine will be treated as an EV6.
455 depends on ALPHA_MARVEL
460 depends on ALPHA_RAWHIDE
465 depends on ALPHA_RX164
468 config ALPHA_IRONGATE
470 depends on ALPHA_NAUTILUS
473 config GENERIC_HWEIGHT
475 default y if !ALPHA_EV67
479 depends on ALPHA_XL || ALPHA_AVANTI_CH
482 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
484 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
486 config ALPHA_BROKEN_IRQ_MASK
488 depends on ALPHA_GENERIC || ALPHA_PC164
493 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
496 Support VGA on an arbitrary hose; needed for several platforms
497 which always have multiple hoses, and whose consoles support it.
501 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
502 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
504 There are two different types of booting firmware on Alphas: SRM,
505 which is command line driven, and ARC, which uses menus and arrow
506 keys. Details about the Linux/Alpha booting process are contained in
507 the Linux/Alpha FAQ, accessible on the WWW from
508 <http://www.alphalinux.org/>.
510 The usual way to load Linux on an Alpha machine is to use MILO
511 (a bootloader that lets you pass command line parameters to the
512 kernel just like lilo does for the x86 architecture) which can be
513 loaded either from ARC or can be installed directly as a permanent
514 firmware replacement from floppy (which requires changing a certain
515 jumper on the motherboard). If you want to do either of these, say N
516 here. If MILO doesn't work on your system (true for Jensen
517 motherboards), you can bypass it altogether and boot Linux directly
518 from an SRM console; say Y here in order to do that. Note that you
519 won't be able to boot from an IDE disk using SRM.
525 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
528 config ARCH_MAY_HAVE_PC_FDC
532 bool "Symmetric multi-processing support"
533 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
534 select USE_GENERIC_SMP_HELPERS
536 This enables support for systems with more than one CPU. If you have
537 a system with only one CPU, like most personal computers, say N. If
538 you have a system with more than one CPU, say Y.
540 If you say N here, the kernel will run on single and multiprocessor
541 machines, but will use only one CPU of a multiprocessor machine. If
542 you say Y here, the kernel will run on many, but not all,
543 singleprocessor machines. On a singleprocessor machine, the kernel
544 will run faster if you say N here.
546 See also the SMP-HOWTO available at
547 <http://www.tldp.org/docs.html#howto>.
549 If you don't know what to do here, say N.
557 int "Maximum number of CPUs (2-32)"
560 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
561 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
563 MARVEL support can handle a maximum of 32 CPUs, all the others
564 with working support have a maximum of 4 CPUs.
566 config ARCH_DISCONTIGMEM_ENABLE
567 bool "Discontiguous Memory Support (EXPERIMENTAL)"
568 depends on EXPERIMENTAL
570 Say Y to support efficient handling of discontiguous physical memory,
571 for architectures which are either NUMA (Non-Uniform Memory Access)
572 or have huge holes in the physical address space for other reasons.
573 See <file:Documentation/vm/numa> for more.
578 bool "NUMA Support (EXPERIMENTAL)"
579 depends on DISCONTIGMEM && BROKEN
581 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
582 Access). This option is for configuring high-end multiprocessor
583 server machines. If in doubt, say N.
588 depends on NEED_MULTIPLE_NODES
590 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
591 config ALPHA_LARGE_VMALLOC
594 Process creation and other aspects of virtual memory management can
595 be streamlined if we restrict the kernel to one PGD for all vmalloc
596 allocations. This equates to about 8GB.
598 Under normal circumstances, this is so far and above what is needed
599 as to be laughable. However, there are certain applications (such
600 as benchmark-grade in-kernel web serving) that can make use of as
601 much vmalloc space as is available.
603 Say N unless you know you need gobs and gobs of vmalloc space.
605 config VERBOSE_MCHECK
606 bool "Verbose Machine Checks"
608 config VERBOSE_MCHECK_ON
609 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
610 depends on VERBOSE_MCHECK
613 This option allows the default printing mode to be set, and then
614 possibly overridden by a boot command argument.
616 For example, if one wanted the option of printing verbose
617 machine checks, but wanted the default to be as if verbose
618 machine check printing was turned off, then one would choose
619 the printing mode to be 0. Then, upon reboot, one could add
620 the boot command line "verbose_mcheck=1" to get the normal
621 verbose machine check printing, or "verbose_mcheck=2" to get
622 the maximum information available.
624 Take the default (1) unless you want more control or more info.
628 default 1200 if ALPHA_RAWHIDE
631 source "drivers/pci/Kconfig"
632 source "drivers/eisa/Kconfig"
634 source "drivers/pcmcia/Kconfig"
637 tristate "SRM environment through procfs"
640 If you enable this option, a subdirectory inside /proc called
641 /proc/srm_environment will give you access to the all important
642 SRM environment variables (those which have a name) and also
643 to all others (by their internal number).
645 SRM is something like a BIOS for Alpha machines. There are some
646 other such BIOSes, like AlphaBIOS, which this driver cannot
647 support (hey, that's not SRM!).
649 Despite the fact that this driver doesn't work on all Alphas (but
650 only on those which have SRM as their firmware), it's save to
651 build it even if your particular machine doesn't know about SRM
652 (or if you intend to compile a generic kernel). It will simply
653 not create those subdirectory in /proc (and give you some warning,
656 This driver is also available as a module and will be called
659 source "fs/Kconfig.binfmt"
665 source "drivers/Kconfig"
669 source "arch/alpha/Kconfig.debug"
671 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
672 # but we also need it if VGA_HOSE is set
678 source "security/Kconfig"
680 source "crypto/Kconfig"