1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
8 select ARCH_NO_SG_CHAIN
9 select ARCH_USE_CMPXCHG_LOCKREF
10 select FORCE_PCI if !ALPHA_JENSEN
11 select PCI_DOMAINS if PCI
12 select PCI_SYSCALL if PCI
14 select HAVE_ASM_MODVERSIONS
17 select HAVE_PCSPKR_PLATFORM
18 select HAVE_PERF_EVENTS
19 select NEED_DMA_MAP_STATE
20 select NEED_SG_DMA_LENGTH
22 select GENERIC_IRQ_PROBE
23 select GENERIC_PCI_IOMAP if PCI
24 select AUTO_IRQ_AFFINITY if SMP
25 select GENERIC_IRQ_SHOW
26 select ARCH_WANT_IPC_PARSE_VERSION
27 select ARCH_HAVE_NMI_SAFE_CMPXCHG
29 select GENERIC_CLOCKEVENTS
30 select GENERIC_CPU_VULNERABILITIES
31 select GENERIC_SMP_IDLE_THREAD
32 select GENERIC_STRNCPY_FROM_USER
33 select GENERIC_STRNLEN_USER
34 select HAVE_ARCH_AUDITSYSCALL
35 select HAVE_MOD_ARCH_SPECIFIC
36 select MODULES_USE_ELF_RELA
37 select ODD_RT_SIGACTION
39 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
40 select MMU_GATHER_NO_RANGE
42 The Alpha is a 64-bit general-purpose processor designed and
43 marketed by the Digital Equipment Corporation of blessed memory,
44 now Hewlett-Packard. The Alpha Linux project has a home page at
45 <http://www.alphalinux.org/>.
54 config ARCH_HAS_ILOG2_U32
58 config ARCH_HAS_ILOG2_U64
62 config GENERIC_CALIBRATE_DELAY
70 config GENERIC_ISA_DMA
84 prompt "Alpha system type"
87 This is the system type of your hardware. A "generic" kernel will
88 run on any supported Alpha system. However, if you configure a
89 kernel for your specific system, it will be faster and smaller.
91 To find out what type of Alpha system you have, you may want to
92 check out the Linux/Alpha FAQ, accessible on the WWW from
93 <http://www.alphalinux.org/>. In summary:
95 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
96 Alpha-XL XL-233, XL-266
97 AlphaBook1 Alpha laptop
98 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
99 Cabriolet AlphaPC64, AlphaPCI64
100 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
101 EB164 EB164 21164 evaluation board
102 EB64+ EB64+ 21064 evaluation board
103 EB66 EB66 21066 evaluation board
104 EB66+ EB66+ 21066 evaluation board
105 Jensen DECpc 150, DEC 2000 models 300, 500
108 Miata Personal Workstation 433/500/600 a/au
109 Marvel AlphaServer ES47 / ES80 / GS1280
111 Noname AXPpci33, UDB (Multia)
112 Noritake AS 1000A, AS 600A, AS 800
114 Rawhide AS 1200, AS 4000, AS 4100
115 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
117 Sable AS 2000, AS 2100
120 Titan AlphaServer ES45 / DS25 / DS15
121 Wildfire AlphaServer GS 40/80/160/320
123 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"
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.
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>.
226 AlphaServer 2100A-based systems.
231 AlphaServer ES47 / ES80 / GS1280 based on EV7.
237 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
243 AlphaServer 1000-based Alpha systems.
245 config ALPHA_NAUTILUS
248 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
250 config ALPHA_NONAME_CH
253 config ALPHA_NORITAKE
257 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
270 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
272 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
277 Samsung APC164UX. There is a page on known problems and workarounds
278 at <http://www.alphalinux.org/faq/FAQ-11.html>.
290 Digital AlphaServer 2000 and 2100-based systems.
298 Alpha 11164-based OEM single-board computer.
303 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
305 config ALPHA_WILDFIRE
308 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
312 # clear all implied options (don't want default values for those):
313 # Most of these machines have ISA slots; not exactly sure which don't,
314 # and this doesn't activate hordes of code, so do it always.
319 Find out whether you have ISA slots on your motherboard. ISA is the
320 name of a bus system, i.e. the way the CPU talks to the other stuff
321 inside your box. Other bus systems are PCI, EISA, MicroChannel
322 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
323 newer boards don't support it. If you have ISA, say Y, otherwise N.
331 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
334 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
335 UDB). This design was produced by Digital's Technical OEM (TOEM)
336 group. It uses the 21066 processor running at 166MHz or 233MHz. It
337 is a baby-AT size, and runs from a standard PC power supply. It has
338 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
339 2 versions, with either PS/2 or large DIN connectors for the
344 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
345 default y if !ALPHA_LYNX
349 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
354 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
359 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
362 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
363 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
364 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
365 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
366 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
367 Runs from standard PC power supply.
370 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
371 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
375 default y if ALPHA_LYNX && !ALPHA_EV5
379 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
383 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
384 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
387 prompt "EV56 CPU (speed >= 333MHz)?"
388 depends on ALPHA_NORITAKE || ALPHA_PRIMO
391 prompt "EV56 CPU (speed >= 400MHz)?"
392 depends on ALPHA_RAWHIDE
395 bool "EV5 CPU daughtercard (model 5/xxx)?"
396 depends on ALPHA_NORITAKE || ALPHA_MIKASA
398 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
401 bool "EV5 CPU(s) (model 5/xxx)?"
402 depends on ALPHA_SABLE
404 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
408 depends on ALPHA_LYNX
413 depends on ALPHA_SABLE || ALPHA_LYNX
418 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
423 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
428 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
432 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
433 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
435 Is this a machine based on the EV67 core? If in doubt, select N here
436 and the machine will be treated as an EV6.
440 depends on ALPHA_RAWHIDE
445 depends on ALPHA_RX164
448 config ALPHA_IRONGATE
450 depends on ALPHA_NAUTILUS
453 config GENERIC_HWEIGHT
455 default y if !ALPHA_EV67
459 depends on ALPHA_XL || ALPHA_AVANTI_CH
462 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
464 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
466 config ALPHA_BROKEN_IRQ_MASK
468 depends on ALPHA_GENERIC || ALPHA_PC164
473 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
476 Support VGA on an arbitrary hose; needed for several platforms
477 which always have multiple hoses, and whose consoles support it.
481 bool "Run under QEMU emulation"
482 depends on !ALPHA_GENERIC
484 Assume the presence of special features supported by QEMU PALcode
485 that reduce the overhead of system emulation.
487 Generic kernels will auto-detect QEMU. But when building a
488 system-specific kernel, the assumption is that we want to
489 eliminate as many runtime tests as possible.
495 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
497 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
499 There are two different types of booting firmware on Alphas: SRM,
500 which is command line driven, and ARC, which uses menus and arrow
501 keys. Details about the Linux/Alpha booting process are contained in
502 the Linux/Alpha FAQ, accessible on the WWW from
503 <http://www.alphalinux.org/>.
505 The usual way to load Linux on an Alpha machine is to use MILO
506 (a bootloader that lets you pass command line parameters to the
507 kernel just like lilo does for the x86 architecture) which can be
508 loaded either from ARC or can be installed directly as a permanent
509 firmware replacement from floppy (which requires changing a certain
510 jumper on the motherboard). If you want to do either of these, say N
511 here. If MILO doesn't work on your system (true for Jensen
512 motherboards), you can bypass it altogether and boot Linux directly
513 from an SRM console; say Y here in order to do that. Note that you
514 won't be able to boot from an IDE disk using SRM.
518 config ARCH_MAY_HAVE_PC_FDC
522 bool "Symmetric multi-processing support"
523 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
525 This enables support for systems with more than one CPU. If you have
526 a system with only one CPU, say N. If you have a system with more
529 If you say N here, the kernel will run on uni- and multiprocessor
530 machines, but will use only one CPU of a multiprocessor machine. If
531 you say Y here, the kernel will run on many, but not all,
532 uniprocessor machines. On a uniprocessor machine, the kernel
533 will run faster if you say N here.
535 See also the SMP-HOWTO available at
536 <http://www.tldp.org/docs.html#howto>.
538 If you don't know what to do here, say N.
541 int "Maximum number of CPUs (2-32)"
544 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
545 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
547 MARVEL support can handle a maximum of 32 CPUs, all the others
548 with working support have a maximum of 4 CPUs.
550 config ARCH_DISCONTIGMEM_ENABLE
551 bool "Discontiguous Memory Support"
553 Say Y to support efficient handling of discontiguous physical memory,
554 for architectures which are either NUMA (Non-Uniform Memory Access)
555 or have huge holes in the physical address space for other reasons.
556 See <file:Documentation/vm/numa.rst> for more.
559 bool "NUMA Support (EXPERIMENTAL)"
560 depends on DISCONTIGMEM && BROKEN
562 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
563 Access). This option is for configuring high-end multiprocessor
564 server machines. If in doubt, say N.
567 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
568 default y if ALPHA_QEMU
569 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
570 default n if !ALPHA_SRM && !ALPHA_GENERIC
573 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
574 to sleep until the next interrupt. This may reduce the power
575 consumed, and the heat produced by the computer. However, it has
576 the side effect of making the cycle counter unreliable as a timing
577 device across the sleep.
579 For emulation under QEMU, definitely say Y here, as we have other
580 mechanisms for measuring time than the cycle counter.
582 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
583 MILO, sleep mode is not supported so you might as well say N here.
585 For SMP systems we cannot use the cycle counter for timing anyway,
586 so you might as well say Y here.
593 depends on NEED_MULTIPLE_NODES
595 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
596 config ALPHA_LARGE_VMALLOC
599 Process creation and other aspects of virtual memory management can
600 be streamlined if we restrict the kernel to one PGD for all vmalloc
601 allocations. This equates to about 8GB.
603 Under normal circumstances, this is so far and above what is needed
604 as to be laughable. However, there are certain applications (such
605 as benchmark-grade in-kernel web serving) that can make use of as
606 much vmalloc space as is available.
608 Say N unless you know you need gobs and gobs of vmalloc space.
610 config VERBOSE_MCHECK
611 bool "Verbose Machine Checks"
613 config VERBOSE_MCHECK_ON
614 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
615 depends on VERBOSE_MCHECK
618 This option allows the default printing mode to be set, and then
619 possibly overridden by a boot command argument.
621 For example, if one wanted the option of printing verbose
622 machine checks, but wanted the default to be as if verbose
623 machine check printing was turned off, then one would choose
624 the printing mode to be 0. Then, upon reboot, one could add
625 the boot command line "verbose_mcheck=1" to get the normal
626 verbose machine check printing, or "verbose_mcheck=2" to get
627 the maximum information available.
629 Take the default (1) unless you want more control or more info.
632 prompt "Timer interrupt frequency (HZ)?"
633 default HZ_128 if ALPHA_QEMU
634 default HZ_1200 if ALPHA_RAWHIDE
637 The frequency at which timer interrupts occur. A high frequency
638 minimizes latency, whereas a low frequency minimizes overhead of
639 process accounting. The later effect is especially significant
640 when being run under QEMU.
642 Note that some Alpha hardware cannot change the interrupt frequency
643 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
663 default 128 if HZ_128
664 default 256 if HZ_256
665 default 1200 if HZ_1200
669 tristate "SRM environment through procfs"
672 If you enable this option, a subdirectory inside /proc called
673 /proc/srm_environment will give you access to the all important
674 SRM environment variables (those which have a name) and also
675 to all others (by their internal number).
677 SRM is something like a BIOS for Alpha machines. There are some
678 other such BIOSes, like AlphaBIOS, which this driver cannot
679 support (hey, that's not SRM!).
681 Despite the fact that this driver doesn't work on all Alphas (but
682 only on those which have SRM as their firmware), it's save to
683 build it even if your particular machine doesn't know about SRM
684 (or if you intend to compile a generic kernel). It will simply
685 not create those subdirectory in /proc (and give you some warning,
688 This driver is also available as a module and will be called
693 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
694 # but we also need it if VGA_HOSE is set