1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
8 select ARCH_USE_CMPXCHG_LOCKREF
12 select HAVE_PCSPKR_PLATFORM
13 select HAVE_PERF_EVENTS
14 select NEED_DMA_MAP_STATE
15 select NEED_SG_DMA_LENGTH
17 select GENERIC_IRQ_PROBE
18 select AUTO_IRQ_AFFINITY if SMP
19 select GENERIC_IRQ_SHOW
20 select ARCH_WANT_IPC_PARSE_VERSION
21 select ARCH_HAVE_NMI_SAFE_CMPXCHG
23 select GENERIC_CLOCKEVENTS
24 select GENERIC_CPU_VULNERABILITIES
25 select GENERIC_SMP_IDLE_THREAD
26 select GENERIC_STRNCPY_FROM_USER
27 select GENERIC_STRNLEN_USER
28 select HAVE_ARCH_AUDITSYSCALL
29 select HAVE_MOD_ARCH_SPECIFIC
30 select MODULES_USE_ELF_RELA
31 select ODD_RT_SIGACTION
33 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
36 The Alpha is a 64-bit general-purpose processor designed and
37 marketed by the Digital Equipment Corporation of blessed memory,
38 now Hewlett-Packard. The Alpha Linux project has a home page at
39 <http://www.alphalinux.org/>.
48 config RWSEM_GENERIC_SPINLOCK
51 config RWSEM_XCHGADD_ALGORITHM
55 config ARCH_HAS_ILOG2_U32
59 config ARCH_HAS_ILOG2_U64
63 config GENERIC_CALIBRATE_DELAY
71 config GENERIC_ISA_DMA
85 prompt "Alpha system type"
88 This is the system type of your hardware. A "generic" kernel will
89 run on any supported Alpha system. However, if you configure a
90 kernel for your specific system, it will be faster and smaller.
92 To find out what type of Alpha system you have, you may want to
93 check out the Linux/Alpha FAQ, accessible on the WWW from
94 <http://www.alphalinux.org/>. In summary:
96 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
97 Alpha-XL XL-233, XL-266
98 AlphaBook1 Alpha laptop
99 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
100 Cabriolet AlphaPC64, AlphaPCI64
101 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
102 EB164 EB164 21164 evaluation board
103 EB64+ EB64+ 21064 evaluation board
104 EB66 EB66 21066 evaluation board
105 EB66+ EB66+ 21066 evaluation board
106 Jensen DECpc 150, DEC 2000 models 300, 500
109 Miata Personal Workstation 433/500/600 a/au
110 Marvel AlphaServer ES47 / ES80 / GS1280
112 Noname AXPpci33, UDB (Multia)
113 Noritake AS 1000A, AS 600A, AS 800
115 Rawhide AS 1200, AS 4000, AS 4100
116 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
118 Sable AS 2000, AS 2100
121 Titan AlphaServer ES45 / DS25 / DS15
122 Wildfire AlphaServer GS 40/80/160/320
124 If you don't know what to do, choose "generic".
130 A generic kernel will run on all supported Alpha hardware.
133 bool "Alcor/Alpha-XLT"
135 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
136 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
137 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
138 controller (256-bit memory bus) and a PCI interface. It also does
139 all the work required to support an external Bcache and to maintain
140 memory coherence when a PCI device DMAs into (or out of) memory.
145 XL-233 and XL-266-based Alpha systems.
150 Dec AlphaBook1/Burns Alpha-based laptops.
152 config ALPHA_AVANTI_CH
155 config ALPHA_CABRIOLET
158 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
159 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
160 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
161 Bcache SIMMs. Requires power supply with 3.3V output.
166 Various 21264 systems with the tsunami core logic chipset.
167 API Networks: 264DP, UP2000(+), CS20;
168 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
173 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
174 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
175 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
176 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
177 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
178 motherboard. Requires power supply with 3.3V output.
180 config ALPHA_EB64P_CH
186 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
187 identical to EB64+. Baby PC-AT size. Runs from standard PC power
188 supply. The EB66 schematic was published as a marketing poster
189 advertising the 21066 as "the first microprocessor in the world with
195 Later variant of the EB66 board.
200 Apparently an obscure OEM single-board computer based on the
201 Typhoon/Tsunami chipset family. Information on it is scanty.
206 select DMA_DIRECT_OPS
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
326 select GENERIC_PCI_IOMAP
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.
343 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
346 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
347 UDB). This design was produced by Digital's Technical OEM (TOEM)
348 group. It uses the 21066 processor running at 166MHz or 233MHz. It
349 is a baby-AT size, and runs from a standard PC power supply. It has
350 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
351 2 versions, with either PS/2 or large DIN connectors for the
356 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
357 default y if !ALPHA_LYNX
361 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
366 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
371 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
374 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
375 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
376 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
377 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
378 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
379 Runs from standard PC power supply.
382 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
383 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
387 default y if ALPHA_LYNX && !ALPHA_EV5
391 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
395 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
396 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
399 prompt "EV56 CPU (speed >= 333MHz)?"
400 depends on ALPHA_NORITAKE || ALPHA_PRIMO
403 prompt "EV56 CPU (speed >= 400MHz)?"
404 depends on ALPHA_RAWHIDE
407 bool "EV5 CPU daughtercard (model 5/xxx)?"
408 depends on ALPHA_NORITAKE || ALPHA_MIKASA
410 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
413 bool "EV5 CPU(s) (model 5/xxx)?"
414 depends on ALPHA_SABLE
416 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
420 depends on ALPHA_LYNX
425 depends on ALPHA_SABLE || ALPHA_LYNX
430 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
435 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
440 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
444 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
445 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
447 Is this a machine based on the EV67 core? If in doubt, select N here
448 and the machine will be treated as an EV6.
452 depends on ALPHA_RAWHIDE
457 depends on ALPHA_RX164
460 config ALPHA_IRONGATE
462 depends on ALPHA_NAUTILUS
465 config GENERIC_HWEIGHT
467 default y if !ALPHA_EV67
471 depends on ALPHA_XL || ALPHA_AVANTI_CH
474 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
476 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
478 config ALPHA_BROKEN_IRQ_MASK
480 depends on ALPHA_GENERIC || ALPHA_PC164
485 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
488 Support VGA on an arbitrary hose; needed for several platforms
489 which always have multiple hoses, and whose consoles support it.
493 bool "Run under QEMU emulation"
494 depends on !ALPHA_GENERIC
496 Assume the presence of special features supported by QEMU PALcode
497 that reduce the overhead of system emulation.
499 Generic kernels will auto-detect QEMU. But when building a
500 system-specific kernel, the assumption is that we want to
501 eliminate as many runtime tests as possible.
507 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
509 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
511 There are two different types of booting firmware on Alphas: SRM,
512 which is command line driven, and ARC, which uses menus and arrow
513 keys. Details about the Linux/Alpha booting process are contained in
514 the Linux/Alpha FAQ, accessible on the WWW from
515 <http://www.alphalinux.org/>.
517 The usual way to load Linux on an Alpha machine is to use MILO
518 (a bootloader that lets you pass command line parameters to the
519 kernel just like lilo does for the x86 architecture) which can be
520 loaded either from ARC or can be installed directly as a permanent
521 firmware replacement from floppy (which requires changing a certain
522 jumper on the motherboard). If you want to do either of these, say N
523 here. If MILO doesn't work on your system (true for Jensen
524 motherboards), you can bypass it altogether and boot Linux directly
525 from an SRM console; say Y here in order to do that. Note that you
526 won't be able to boot from an IDE disk using SRM.
532 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
535 config ARCH_MAY_HAVE_PC_FDC
539 bool "Symmetric multi-processing support"
540 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
542 This enables support for systems with more than one CPU. If you have
543 a system with only one CPU, say N. If you have a system with more
546 If you say N here, the kernel will run on uni- and multiprocessor
547 machines, but will use only one CPU of a multiprocessor machine. If
548 you say Y here, the kernel will run on many, but not all,
549 uniprocessor machines. On a uniprocessor machine, the kernel
550 will run faster if you say N here.
552 See also the SMP-HOWTO available at
553 <http://www.tldp.org/docs.html#howto>.
555 If you don't know what to do here, say N.
558 int "Maximum number of CPUs (2-32)"
561 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
562 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
564 MARVEL support can handle a maximum of 32 CPUs, all the others
565 with working support have a maximum of 4 CPUs.
567 config ARCH_DISCONTIGMEM_ENABLE
568 bool "Discontiguous Memory Support"
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.rst> for more.
576 bool "NUMA Support (EXPERIMENTAL)"
577 depends on DISCONTIGMEM && BROKEN
579 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
580 Access). This option is for configuring high-end multiprocessor
581 server machines. If in doubt, say N.
584 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
585 default y if ALPHA_QEMU
586 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
587 default n if !ALPHA_SRM && !ALPHA_GENERIC
590 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
591 to sleep until the next interrupt. This may reduce the power
592 consumed, and the heat produced by the computer. However, it has
593 the side effect of making the cycle counter unreliable as a timing
594 device across the sleep.
596 For emulation under QEMU, definitely say Y here, as we have other
597 mechanisms for measuring time than the cycle counter.
599 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
600 MILO, sleep mode is not supported so you might as well say N here.
602 For SMP systems we cannot use the cycle counter for timing anyway,
603 so you might as well say Y here.
610 depends on NEED_MULTIPLE_NODES
612 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
613 config ALPHA_LARGE_VMALLOC
616 Process creation and other aspects of virtual memory management can
617 be streamlined if we restrict the kernel to one PGD for all vmalloc
618 allocations. This equates to about 8GB.
620 Under normal circumstances, this is so far and above what is needed
621 as to be laughable. However, there are certain applications (such
622 as benchmark-grade in-kernel web serving) that can make use of as
623 much vmalloc space as is available.
625 Say N unless you know you need gobs and gobs of vmalloc space.
627 config VERBOSE_MCHECK
628 bool "Verbose Machine Checks"
630 config VERBOSE_MCHECK_ON
631 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
632 depends on VERBOSE_MCHECK
635 This option allows the default printing mode to be set, and then
636 possibly overridden by a boot command argument.
638 For example, if one wanted the option of printing verbose
639 machine checks, but wanted the default to be as if verbose
640 machine check printing was turned off, then one would choose
641 the printing mode to be 0. Then, upon reboot, one could add
642 the boot command line "verbose_mcheck=1" to get the normal
643 verbose machine check printing, or "verbose_mcheck=2" to get
644 the maximum information available.
646 Take the default (1) unless you want more control or more info.
649 prompt "Timer interrupt frequency (HZ)?"
650 default HZ_128 if ALPHA_QEMU
651 default HZ_1200 if ALPHA_RAWHIDE
654 The frequency at which timer interrupts occur. A high frequency
655 minimizes latency, whereas a low frequency minimizes overhead of
656 process accounting. The later effect is especially significant
657 when being run under QEMU.
659 Note that some Alpha hardware cannot change the interrupt frequency
660 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
680 default 128 if HZ_128
681 default 256 if HZ_256
682 default 1200 if HZ_1200
685 source "drivers/pci/Kconfig"
686 source "drivers/eisa/Kconfig"
688 source "drivers/pcmcia/Kconfig"
691 tristate "SRM environment through procfs"
694 If you enable this option, a subdirectory inside /proc called
695 /proc/srm_environment will give you access to the all important
696 SRM environment variables (those which have a name) and also
697 to all others (by their internal number).
699 SRM is something like a BIOS for Alpha machines. There are some
700 other such BIOSes, like AlphaBIOS, which this driver cannot
701 support (hey, that's not SRM!).
703 Despite the fact that this driver doesn't work on all Alphas (but
704 only on those which have SRM as their firmware), it's save to
705 build it even if your particular machine doesn't know about SRM
706 (or if you intend to compile a generic kernel). It will simply
707 not create those subdirectory in /proc (and give you some warning,
710 This driver is also available as a module and will be called
715 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
716 # but we also need it if VGA_HOSE is set