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
37 The Alpha is a 64-bit general-purpose processor designed and
38 marketed by the Digital Equipment Corporation of blessed memory,
39 now Hewlett-Packard. The Alpha Linux project has a home page at
40 <http://www.alphalinux.org/>.
49 config RWSEM_GENERIC_SPINLOCK
52 config RWSEM_XCHGADD_ALGORITHM
56 config ARCH_HAS_ILOG2_U32
60 config ARCH_HAS_ILOG2_U64
64 config GENERIC_CALIBRATE_DELAY
72 config GENERIC_ISA_DMA
86 prompt "Alpha system type"
89 This is the system type of your hardware. A "generic" kernel will
90 run on any supported Alpha system. However, if you configure a
91 kernel for your specific system, it will be faster and smaller.
93 To find out what type of Alpha system you have, you may want to
94 check out the Linux/Alpha FAQ, accessible on the WWW from
95 <http://www.alphalinux.org/>. In summary:
97 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
98 Alpha-XL XL-233, XL-266
99 AlphaBook1 Alpha laptop
100 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
101 Cabriolet AlphaPC64, AlphaPCI64
102 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
103 EB164 EB164 21164 evaluation board
104 EB64+ EB64+ 21064 evaluation board
105 EB66 EB66 21066 evaluation board
106 EB66+ EB66+ 21066 evaluation board
107 Jensen DECpc 150, DEC 2000 models 300, 500
110 Miata Personal Workstation 433/500/600 a/au
111 Marvel AlphaServer ES47 / ES80 / GS1280
113 Noname AXPpci33, UDB (Multia)
114 Noritake AS 1000A, AS 600A, AS 800
116 Rawhide AS 1200, AS 4000, AS 4100
117 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
119 Sable AS 2000, AS 2100
122 Titan AlphaServer ES45 / DS25 / DS15
123 Wildfire AlphaServer GS 40/80/160/320
125 If you don't know what to do, choose "generic".
131 A generic kernel will run on all supported Alpha hardware.
134 bool "Alcor/Alpha-XLT"
136 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
137 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
138 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
139 controller (256-bit memory bus) and a PCI interface. It also does
140 all the work required to support an external Bcache and to maintain
141 memory coherence when a PCI device DMAs into (or out of) memory.
146 XL-233 and XL-266-based Alpha systems.
151 Dec AlphaBook1/Burns Alpha-based laptops.
153 config ALPHA_AVANTI_CH
156 config ALPHA_CABRIOLET
159 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
160 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
161 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
162 Bcache SIMMs. Requires power supply with 3.3V output.
167 Various 21264 systems with the tsunami core logic chipset.
168 API Networks: 264DP, UP2000(+), CS20;
169 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
174 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
175 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
176 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
177 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
178 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
179 motherboard. Requires power supply with 3.3V output.
181 config ALPHA_EB64P_CH
187 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
188 identical to EB64+. Baby PC-AT size. Runs from standard PC power
189 supply. The EB66 schematic was published as a marketing poster
190 advertising the 21066 as "the first microprocessor in the world with
196 Later variant of the EB66 board.
201 Apparently an obscure OEM single-board computer based on the
202 Typhoon/Tsunami chipset family. Information on it is scanty.
207 select DMA_DIRECT_OPS
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
327 select GENERIC_PCI_IOMAP
330 Find out whether you have a PCI motherboard. PCI is the name of a
331 bus system, i.e. the way the CPU talks to the other stuff inside
332 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
333 VESA. If you have PCI, say Y, otherwise N.
344 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
347 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
348 UDB). This design was produced by Digital's Technical OEM (TOEM)
349 group. It uses the 21066 processor running at 166MHz or 233MHz. It
350 is a baby-AT size, and runs from a standard PC power supply. It has
351 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
352 2 versions, with either PS/2 or large DIN connectors for the
357 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
358 default y if !ALPHA_LYNX
362 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
367 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
372 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
375 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
376 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
377 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
378 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
379 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
380 Runs from standard PC power supply.
383 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
384 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
388 default y if ALPHA_LYNX && !ALPHA_EV5
392 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
396 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
397 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
400 prompt "EV56 CPU (speed >= 333MHz)?"
401 depends on ALPHA_NORITAKE || ALPHA_PRIMO
404 prompt "EV56 CPU (speed >= 400MHz)?"
405 depends on ALPHA_RAWHIDE
408 bool "EV5 CPU daughtercard (model 5/xxx)?"
409 depends on ALPHA_NORITAKE || ALPHA_MIKASA
411 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
414 bool "EV5 CPU(s) (model 5/xxx)?"
415 depends on ALPHA_SABLE
417 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
421 depends on ALPHA_LYNX
426 depends on ALPHA_SABLE || ALPHA_LYNX
431 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
436 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
441 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
445 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
446 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
448 Is this a machine based on the EV67 core? If in doubt, select N here
449 and the machine will be treated as an EV6.
453 depends on ALPHA_RAWHIDE
458 depends on ALPHA_RX164
461 config ALPHA_IRONGATE
463 depends on ALPHA_NAUTILUS
466 config GENERIC_HWEIGHT
468 default y if !ALPHA_EV67
472 depends on ALPHA_XL || ALPHA_AVANTI_CH
475 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
477 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
479 config ALPHA_BROKEN_IRQ_MASK
481 depends on ALPHA_GENERIC || ALPHA_PC164
486 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
489 Support VGA on an arbitrary hose; needed for several platforms
490 which always have multiple hoses, and whose consoles support it.
494 bool "Run under QEMU emulation"
495 depends on !ALPHA_GENERIC
497 Assume the presence of special features supported by QEMU PALcode
498 that reduce the overhead of system emulation.
500 Generic kernels will auto-detect QEMU. But when building a
501 system-specific kernel, the assumption is that we want to
502 eliminate as many runtime tests as possible.
508 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
510 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
512 There are two different types of booting firmware on Alphas: SRM,
513 which is command line driven, and ARC, which uses menus and arrow
514 keys. Details about the Linux/Alpha booting process are contained in
515 the Linux/Alpha FAQ, accessible on the WWW from
516 <http://www.alphalinux.org/>.
518 The usual way to load Linux on an Alpha machine is to use MILO
519 (a bootloader that lets you pass command line parameters to the
520 kernel just like lilo does for the x86 architecture) which can be
521 loaded either from ARC or can be installed directly as a permanent
522 firmware replacement from floppy (which requires changing a certain
523 jumper on the motherboard). If you want to do either of these, say N
524 here. If MILO doesn't work on your system (true for Jensen
525 motherboards), you can bypass it altogether and boot Linux directly
526 from an SRM console; say Y here in order to do that. Note that you
527 won't be able to boot from an IDE disk using SRM.
533 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
536 config ARCH_MAY_HAVE_PC_FDC
540 bool "Symmetric multi-processing support"
541 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
543 This enables support for systems with more than one CPU. If you have
544 a system with only one CPU, say N. If you have a system with more
547 If you say N here, the kernel will run on uni- and multiprocessor
548 machines, but will use only one CPU of a multiprocessor machine. If
549 you say Y here, the kernel will run on many, but not all,
550 uniprocessor machines. On a uniprocessor machine, the kernel
551 will run faster if you say N here.
553 See also the SMP-HOWTO available at
554 <http://www.tldp.org/docs.html#howto>.
556 If you don't know what to do here, say N.
559 int "Maximum number of CPUs (2-32)"
562 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
563 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
565 MARVEL support can handle a maximum of 32 CPUs, all the others
566 with working support have a maximum of 4 CPUs.
568 config ARCH_DISCONTIGMEM_ENABLE
569 bool "Discontiguous Memory Support"
571 Say Y to support efficient handling of discontiguous physical memory,
572 for architectures which are either NUMA (Non-Uniform Memory Access)
573 or have huge holes in the physical address space for other reasons.
574 See <file:Documentation/vm/numa.rst> for more.
577 bool "NUMA Support (EXPERIMENTAL)"
578 depends on DISCONTIGMEM && BROKEN
580 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
581 Access). This option is for configuring high-end multiprocessor
582 server machines. If in doubt, say N.
585 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
586 default y if ALPHA_QEMU
587 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
588 default n if !ALPHA_SRM && !ALPHA_GENERIC
591 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
592 to sleep until the next interrupt. This may reduce the power
593 consumed, and the heat produced by the computer. However, it has
594 the side effect of making the cycle counter unreliable as a timing
595 device across the sleep.
597 For emulation under QEMU, definitely say Y here, as we have other
598 mechanisms for measuring time than the cycle counter.
600 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
601 MILO, sleep mode is not supported so you might as well say N here.
603 For SMP systems we cannot use the cycle counter for timing anyway,
604 so you might as well say Y here.
611 depends on NEED_MULTIPLE_NODES
613 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
614 config ALPHA_LARGE_VMALLOC
617 Process creation and other aspects of virtual memory management can
618 be streamlined if we restrict the kernel to one PGD for all vmalloc
619 allocations. This equates to about 8GB.
621 Under normal circumstances, this is so far and above what is needed
622 as to be laughable. However, there are certain applications (such
623 as benchmark-grade in-kernel web serving) that can make use of as
624 much vmalloc space as is available.
626 Say N unless you know you need gobs and gobs of vmalloc space.
628 config VERBOSE_MCHECK
629 bool "Verbose Machine Checks"
631 config VERBOSE_MCHECK_ON
632 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
633 depends on VERBOSE_MCHECK
636 This option allows the default printing mode to be set, and then
637 possibly overridden by a boot command argument.
639 For example, if one wanted the option of printing verbose
640 machine checks, but wanted the default to be as if verbose
641 machine check printing was turned off, then one would choose
642 the printing mode to be 0. Then, upon reboot, one could add
643 the boot command line "verbose_mcheck=1" to get the normal
644 verbose machine check printing, or "verbose_mcheck=2" to get
645 the maximum information available.
647 Take the default (1) unless you want more control or more info.
650 prompt "Timer interrupt frequency (HZ)?"
651 default HZ_128 if ALPHA_QEMU
652 default HZ_1200 if ALPHA_RAWHIDE
655 The frequency at which timer interrupts occur. A high frequency
656 minimizes latency, whereas a low frequency minimizes overhead of
657 process accounting. The later effect is especially significant
658 when being run under QEMU.
660 Note that some Alpha hardware cannot change the interrupt frequency
661 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
681 default 128 if HZ_128
682 default 256 if HZ_256
683 default 1200 if HZ_1200
686 source "drivers/pci/Kconfig"
687 source "drivers/eisa/Kconfig"
689 source "drivers/pcmcia/Kconfig"
692 tristate "SRM environment through procfs"
695 If you enable this option, a subdirectory inside /proc called
696 /proc/srm_environment will give you access to the all important
697 SRM environment variables (those which have a name) and also
698 to all others (by their internal number).
700 SRM is something like a BIOS for Alpha machines. There are some
701 other such BIOSes, like AlphaBIOS, which this driver cannot
702 support (hey, that's not SRM!).
704 Despite the fact that this driver doesn't work on all Alphas (but
705 only on those which have SRM as their firmware), it's save to
706 build it even if your particular machine doesn't know about SRM
707 (or if you intend to compile a generic kernel). It will simply
708 not create those subdirectory in /proc (and give you some warning,
711 This driver is also available as a module and will be called
716 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
717 # but we also need it if VGA_HOSE is set