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
11 select FORCE_PCI if !ALPHA_JENSEN
12 select PCI_DOMAINS if PCI
13 select PCI_SYSCALL if PCI
15 select HAVE_ASM_MODVERSIONS
18 select HAVE_PCSPKR_PLATFORM
19 select HAVE_PERF_EVENTS
20 select NEED_DMA_MAP_STATE
21 select NEED_SG_DMA_LENGTH
23 select GENERIC_IRQ_PROBE
24 select GENERIC_PCI_IOMAP if PCI
25 select AUTO_IRQ_AFFINITY if SMP
26 select GENERIC_IRQ_SHOW
27 select ARCH_WANT_IPC_PARSE_VERSION
28 select ARCH_HAVE_NMI_SAFE_CMPXCHG
30 select GENERIC_CLOCKEVENTS
31 select GENERIC_CPU_VULNERABILITIES
32 select GENERIC_SMP_IDLE_THREAD
33 select GENERIC_STRNCPY_FROM_USER
34 select GENERIC_STRNLEN_USER
35 select HAVE_ARCH_AUDITSYSCALL
36 select HAVE_MOD_ARCH_SPECIFIC
37 select MODULES_USE_ELF_RELA
38 select ODD_RT_SIGACTION
40 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
41 select MMU_GATHER_NO_RANGE
43 The Alpha is a 64-bit general-purpose processor designed and
44 marketed by the Digital Equipment Corporation of blessed memory,
45 now Hewlett-Packard. The Alpha Linux project has a home page at
46 <http://www.alphalinux.org/>.
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".
131 A generic kernel will run on all supported Alpha hardware.
134 bool "Alcor/Alpha-XLT"
137 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
138 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
139 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
140 controller (256-bit memory bus) and a PCI interface. It also does
141 all the work required to support an external Bcache and to maintain
142 memory coherence when a PCI device DMAs into (or out of) memory.
147 XL-233 and XL-266-based Alpha systems.
152 Dec AlphaBook1/Burns Alpha-based laptops.
154 config ALPHA_AVANTI_CH
157 config ALPHA_CABRIOLET
160 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
161 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
162 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
163 Bcache SIMMs. Requires power supply with 3.3V output.
168 Various 21264 systems with the tsunami core logic chipset.
169 API Networks: 264DP, UP2000(+), CS20;
170 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
175 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
176 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
177 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
178 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
179 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
180 motherboard. Requires power supply with 3.3V output.
182 config ALPHA_EB64P_CH
188 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
189 identical to EB64+. Baby PC-AT size. Runs from standard PC power
190 supply. The EB66 schematic was published as a marketing poster
191 advertising the 21066 as "the first microprocessor in the world with
197 Later variant of the EB66 board.
202 Apparently an obscure OEM single-board computer based on the
203 Typhoon/Tsunami chipset family. Information on it is scanty.
210 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
211 of the first-generation Alpha systems. A number of these systems
212 seem to be available on the second- hand market. The Jensen is a
213 floor-standing tower system which originally used a 150MHz 21064 It
214 used programmable logic to interface a 486 EISA I/O bridge to the
220 A technical overview of this board is available at
221 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
227 AlphaServer 2100A-based systems.
232 AlphaServer ES47 / ES80 / GS1280 based on EV7.
238 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
244 AlphaServer 1000-based Alpha systems.
246 config ALPHA_NAUTILUS
249 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
251 config ALPHA_NONAME_CH
254 config ALPHA_NORITAKE
258 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
271 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
273 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
278 Samsung APC164UX. There is a page on known problems and workarounds
279 at <http://www.alphalinux.org/faq/FAQ-11.html>.
291 Digital AlphaServer 2000 and 2100-based systems.
299 Alpha 11164-based OEM single-board computer.
304 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
306 config ALPHA_WILDFIRE
309 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
313 # clear all implied options (don't want default values for those):
314 # Most of these machines have ISA slots; not exactly sure which don't,
315 # and this doesn't activate hordes of code, so do it always.
320 Find out whether you have ISA slots on your motherboard. ISA is the
321 name of a bus system, i.e. the way the CPU talks to the other stuff
322 inside your box. Other bus systems are PCI, EISA, MicroChannel
323 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
324 newer boards don't support it. If you have ISA, say Y, otherwise N.
332 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
335 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
336 UDB). This design was produced by Digital's Technical OEM (TOEM)
337 group. It uses the 21066 processor running at 166MHz or 233MHz. It
338 is a baby-AT size, and runs from a standard PC power supply. It has
339 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
340 2 versions, with either PS/2 or large DIN connectors for the
345 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
346 default y if !ALPHA_LYNX
350 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
355 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
360 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
363 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
364 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
365 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
366 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
367 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
368 Runs from standard PC power supply.
371 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
372 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
376 default y if ALPHA_LYNX && !ALPHA_EV5
380 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
384 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
385 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
388 prompt "EV56 CPU (speed >= 333MHz)?"
389 depends on ALPHA_NORITAKE || ALPHA_PRIMO
392 prompt "EV56 CPU (speed >= 400MHz)?"
393 depends on ALPHA_RAWHIDE
396 bool "EV5 CPU daughtercard (model 5/xxx)?"
397 depends on ALPHA_NORITAKE || ALPHA_MIKASA
399 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
402 bool "EV5 CPU(s) (model 5/xxx)?"
403 depends on ALPHA_SABLE
405 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
409 depends on ALPHA_LYNX
414 depends on ALPHA_SABLE || ALPHA_LYNX
419 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
424 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
429 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
433 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
434 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
436 Is this a machine based on the EV67 core? If in doubt, select N here
437 and the machine will be treated as an EV6.
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_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
474 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
477 Support VGA on an arbitrary hose; needed for several platforms
478 which always have multiple hoses, and whose consoles support it.
482 bool "Run under QEMU emulation"
483 depends on !ALPHA_GENERIC
485 Assume the presence of special features supported by QEMU PALcode
486 that reduce the overhead of system emulation.
488 Generic kernels will auto-detect QEMU. But when building a
489 system-specific kernel, the assumption is that we want to
490 eliminate as many runtime tests as possible.
496 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
498 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
500 There are two different types of booting firmware on Alphas: SRM,
501 which is command line driven, and ARC, which uses menus and arrow
502 keys. Details about the Linux/Alpha booting process are contained in
503 the Linux/Alpha FAQ, accessible on the WWW from
504 <http://www.alphalinux.org/>.
506 The usual way to load Linux on an Alpha machine is to use MILO
507 (a bootloader that lets you pass command line parameters to the
508 kernel just like lilo does for the x86 architecture) which can be
509 loaded either from ARC or can be installed directly as a permanent
510 firmware replacement from floppy (which requires changing a certain
511 jumper on the motherboard). If you want to do either of these, say N
512 here. If MILO doesn't work on your system (true for Jensen
513 motherboards), you can bypass it altogether and boot Linux directly
514 from an SRM console; say Y here in order to do that. Note that you
515 won't be able to boot from an IDE disk using SRM.
519 config ARCH_MAY_HAVE_PC_FDC
523 bool "Symmetric multi-processing support"
524 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
526 This enables support for systems with more than one CPU. If you have
527 a system with only one CPU, say N. If you have a system with more
530 If you say N here, the kernel will run on uni- and multiprocessor
531 machines, but will use only one CPU of a multiprocessor machine. If
532 you say Y here, the kernel will run on many, but not all,
533 uniprocessor machines. On a uniprocessor machine, the kernel
534 will run faster if you say N here.
536 See also the SMP-HOWTO available at
537 <http://www.tldp.org/docs.html#howto>.
539 If you don't know what to do here, say N.
542 int "Maximum number of CPUs (2-32)"
545 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
546 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
548 MARVEL support can handle a maximum of 32 CPUs, all the others
549 with working support have a maximum of 4 CPUs.
551 config ARCH_DISCONTIGMEM_ENABLE
552 bool "Discontiguous Memory Support"
554 Say Y to support efficient handling of discontiguous physical memory,
555 for architectures which are either NUMA (Non-Uniform Memory Access)
556 or have huge holes in the physical address space for other reasons.
557 See <file:Documentation/vm/numa.rst> for more.
560 bool "NUMA Support (EXPERIMENTAL)"
561 depends on DISCONTIGMEM && BROKEN
563 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
564 Access). This option is for configuring high-end multiprocessor
565 server machines. If in doubt, say N.
568 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
569 default y if ALPHA_QEMU
570 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
571 default n if !ALPHA_SRM && !ALPHA_GENERIC
574 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
575 to sleep until the next interrupt. This may reduce the power
576 consumed, and the heat produced by the computer. However, it has
577 the side effect of making the cycle counter unreliable as a timing
578 device across the sleep.
580 For emulation under QEMU, definitely say Y here, as we have other
581 mechanisms for measuring time than the cycle counter.
583 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
584 MILO, sleep mode is not supported so you might as well say N here.
586 For SMP systems we cannot use the cycle counter for timing anyway,
587 so you might as well say Y here.
594 depends on NEED_MULTIPLE_NODES
596 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
597 config ALPHA_LARGE_VMALLOC
600 Process creation and other aspects of virtual memory management can
601 be streamlined if we restrict the kernel to one PGD for all vmalloc
602 allocations. This equates to about 8GB.
604 Under normal circumstances, this is so far and above what is needed
605 as to be laughable. However, there are certain applications (such
606 as benchmark-grade in-kernel web serving) that can make use of as
607 much vmalloc space as is available.
609 Say N unless you know you need gobs and gobs of vmalloc space.
611 config VERBOSE_MCHECK
612 bool "Verbose Machine Checks"
614 config VERBOSE_MCHECK_ON
615 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
616 depends on VERBOSE_MCHECK
619 This option allows the default printing mode to be set, and then
620 possibly overridden by a boot command argument.
622 For example, if one wanted the option of printing verbose
623 machine checks, but wanted the default to be as if verbose
624 machine check printing was turned off, then one would choose
625 the printing mode to be 0. Then, upon reboot, one could add
626 the boot command line "verbose_mcheck=1" to get the normal
627 verbose machine check printing, or "verbose_mcheck=2" to get
628 the maximum information available.
630 Take the default (1) unless you want more control or more info.
633 prompt "Timer interrupt frequency (HZ)?"
634 default HZ_128 if ALPHA_QEMU
635 default HZ_1200 if ALPHA_RAWHIDE
638 The frequency at which timer interrupts occur. A high frequency
639 minimizes latency, whereas a low frequency minimizes overhead of
640 process accounting. The later effect is especially significant
641 when being run under QEMU.
643 Note that some Alpha hardware cannot change the interrupt frequency
644 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
664 default 128 if HZ_128
665 default 256 if HZ_256
666 default 1200 if HZ_1200
670 tristate "SRM environment through procfs"
673 If you enable this option, a subdirectory inside /proc called
674 /proc/srm_environment will give you access to the all important
675 SRM environment variables (those which have a name) and also
676 to all others (by their internal number).
678 SRM is something like a BIOS for Alpha machines. There are some
679 other such BIOSes, like AlphaBIOS, which this driver cannot
680 support (hey, that's not SRM!).
682 Despite the fact that this driver doesn't work on all Alphas (but
683 only on those which have SRM as their firmware), it's save to
684 build it even if your particular machine doesn't know about SRM
685 (or if you intend to compile a generic kernel). It will simply
686 not create those subdirectory in /proc (and give you some warning,
689 This driver is also available as a module and will be called
694 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
695 # but we also need it if VGA_HOSE is set