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_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 select SPARSEMEM_EXTREME if SPARSEMEM
44 The Alpha is a 64-bit general-purpose processor designed and
45 marketed by the Digital Equipment Corporation of blessed memory,
46 now Hewlett-Packard. The Alpha Linux project has a home page at
47 <http://www.alphalinux.org/>.
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".
132 A generic kernel will run on all supported Alpha hardware.
135 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.
211 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
212 of the first-generation Alpha systems. A number of these systems
213 seem to be available on the second- hand market. The Jensen is a
214 floor-standing tower system which originally used a 150MHz 21064 It
215 used programmable logic to interface a 486 EISA I/O bridge to the
221 A technical overview of this board is available at
222 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
228 AlphaServer 2100A-based systems.
233 AlphaServer ES47 / ES80 / GS1280 based on EV7.
239 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
245 AlphaServer 1000-based Alpha systems.
247 config ALPHA_NAUTILUS
250 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
252 config ALPHA_NONAME_CH
255 config ALPHA_NORITAKE
259 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
272 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
274 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
279 Samsung APC164UX. There is a page on known problems and workarounds
280 at <http://www.alphalinux.org/faq/FAQ-11.html>.
292 Digital AlphaServer 2000 and 2100-based systems.
300 Alpha 11164-based OEM single-board computer.
305 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
307 config ALPHA_WILDFIRE
310 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
314 # clear all implied options (don't want default values for those):
315 # Most of these machines have ISA slots; not exactly sure which don't,
316 # and this doesn't activate hordes of code, so do it always.
321 Find out whether you have ISA slots on your motherboard. ISA is the
322 name of a bus system, i.e. the way the CPU talks to the other stuff
323 inside your box. Other bus systems are PCI, EISA, MicroChannel
324 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
325 newer boards don't support it. If you have ISA, say Y, otherwise N.
333 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
336 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
337 UDB). This design was produced by Digital's Technical OEM (TOEM)
338 group. It uses the 21066 processor running at 166MHz or 233MHz. It
339 is a baby-AT size, and runs from a standard PC power supply. It has
340 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
341 2 versions, with either PS/2 or large DIN connectors for the
346 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
347 default y if !ALPHA_LYNX
351 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
356 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
361 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
364 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
365 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
366 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
367 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
368 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
369 Runs from standard PC power supply.
372 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
373 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
377 default y if ALPHA_LYNX && !ALPHA_EV5
381 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
385 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
386 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
389 prompt "EV56 CPU (speed >= 333MHz)?"
390 depends on ALPHA_NORITAKE || ALPHA_PRIMO
393 prompt "EV56 CPU (speed >= 400MHz)?"
394 depends on ALPHA_RAWHIDE
397 bool "EV5 CPU daughtercard (model 5/xxx)?"
398 depends on ALPHA_NORITAKE || ALPHA_MIKASA
400 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
403 bool "EV5 CPU(s) (model 5/xxx)?"
404 depends on ALPHA_SABLE
406 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
410 depends on ALPHA_LYNX
415 depends on ALPHA_SABLE || ALPHA_LYNX
420 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
425 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
430 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
434 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
435 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
437 Is this a machine based on the EV67 core? If in doubt, select N here
438 and the machine will be treated as an EV6.
442 depends on ALPHA_RAWHIDE
447 depends on ALPHA_RX164
450 config ALPHA_IRONGATE
452 depends on ALPHA_NAUTILUS
455 config GENERIC_HWEIGHT
457 default y if !ALPHA_EV67
461 depends on ALPHA_XL || ALPHA_AVANTI_CH
464 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
466 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
468 config ALPHA_BROKEN_IRQ_MASK
470 depends on ALPHA_GENERIC || ALPHA_PC164
475 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
478 Support VGA on an arbitrary hose; needed for several platforms
479 which always have multiple hoses, and whose consoles support it.
483 bool "Run under QEMU emulation"
484 depends on !ALPHA_GENERIC
486 Assume the presence of special features supported by QEMU PALcode
487 that reduce the overhead of system emulation.
489 Generic kernels will auto-detect QEMU. But when building a
490 system-specific kernel, the assumption is that we want to
491 eliminate as many runtime tests as possible.
497 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
499 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
501 There are two different types of booting firmware on Alphas: SRM,
502 which is command line driven, and ARC, which uses menus and arrow
503 keys. Details about the Linux/Alpha booting process are contained in
504 the Linux/Alpha FAQ, accessible on the WWW from
505 <http://www.alphalinux.org/>.
507 The usual way to load Linux on an Alpha machine is to use MILO
508 (a bootloader that lets you pass command line parameters to the
509 kernel just like lilo does for the x86 architecture) which can be
510 loaded either from ARC or can be installed directly as a permanent
511 firmware replacement from floppy (which requires changing a certain
512 jumper on the motherboard). If you want to do either of these, say N
513 here. If MILO doesn't work on your system (true for Jensen
514 motherboards), you can bypass it altogether and boot Linux directly
515 from an SRM console; say Y here in order to do that. Note that you
516 won't be able to boot from an IDE disk using SRM.
520 config ARCH_MAY_HAVE_PC_FDC
524 bool "Symmetric multi-processing support"
525 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
527 This enables support for systems with more than one CPU. If you have
528 a system with only one CPU, say N. If you have a system with more
531 If you say N here, the kernel will run on uni- and multiprocessor
532 machines, but will use only one CPU of a multiprocessor machine. If
533 you say Y here, the kernel will run on many, but not all,
534 uniprocessor machines. On a uniprocessor machine, the kernel
535 will run faster if you say N here.
537 See also the SMP-HOWTO available at
538 <http://www.tldp.org/docs.html#howto>.
540 If you don't know what to do here, say N.
543 int "Maximum number of CPUs (2-32)"
546 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
547 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
549 MARVEL support can handle a maximum of 32 CPUs, all the others
550 with working support have a maximum of 4 CPUs.
552 config ARCH_DISCONTIGMEM_ENABLE
553 bool "Discontiguous Memory Support"
556 Say Y to support efficient handling of discontiguous physical memory,
557 for architectures which are either NUMA (Non-Uniform Memory Access)
558 or have huge holes in the physical address space for other reasons.
559 See <file:Documentation/vm/numa.rst> for more.
561 config ARCH_SPARSEMEM_ENABLE
562 bool "Sparse Memory Support"
564 Say Y to support efficient handling of discontiguous physical memory,
565 for systems that have huge holes in the physical address space.
568 bool "NUMA Support (EXPERIMENTAL)"
569 depends on DISCONTIGMEM && BROKEN
571 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
572 Access). This option is for configuring high-end multiprocessor
573 server machines. If in doubt, say N.
576 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
577 default y if ALPHA_QEMU
578 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
579 default n if !ALPHA_SRM && !ALPHA_GENERIC
582 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
583 to sleep until the next interrupt. This may reduce the power
584 consumed, and the heat produced by the computer. However, it has
585 the side effect of making the cycle counter unreliable as a timing
586 device across the sleep.
588 For emulation under QEMU, definitely say Y here, as we have other
589 mechanisms for measuring time than the cycle counter.
591 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
592 MILO, sleep mode is not supported so you might as well say N here.
594 For SMP systems we cannot use the cycle counter for timing anyway,
595 so you might as well say Y here.
602 depends on NEED_MULTIPLE_NODES
604 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
605 config ALPHA_LARGE_VMALLOC
608 Process creation and other aspects of virtual memory management can
609 be streamlined if we restrict the kernel to one PGD for all vmalloc
610 allocations. This equates to about 8GB.
612 Under normal circumstances, this is so far and above what is needed
613 as to be laughable. However, there are certain applications (such
614 as benchmark-grade in-kernel web serving) that can make use of as
615 much vmalloc space as is available.
617 Say N unless you know you need gobs and gobs of vmalloc space.
619 config VERBOSE_MCHECK
620 bool "Verbose Machine Checks"
622 config VERBOSE_MCHECK_ON
623 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
624 depends on VERBOSE_MCHECK
627 This option allows the default printing mode to be set, and then
628 possibly overridden by a boot command argument.
630 For example, if one wanted the option of printing verbose
631 machine checks, but wanted the default to be as if verbose
632 machine check printing was turned off, then one would choose
633 the printing mode to be 0. Then, upon reboot, one could add
634 the boot command line "verbose_mcheck=1" to get the normal
635 verbose machine check printing, or "verbose_mcheck=2" to get
636 the maximum information available.
638 Take the default (1) unless you want more control or more info.
641 prompt "Timer interrupt frequency (HZ)?"
642 default HZ_128 if ALPHA_QEMU
643 default HZ_1200 if ALPHA_RAWHIDE
646 The frequency at which timer interrupts occur. A high frequency
647 minimizes latency, whereas a low frequency minimizes overhead of
648 process accounting. The later effect is especially significant
649 when being run under QEMU.
651 Note that some Alpha hardware cannot change the interrupt frequency
652 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
672 default 128 if HZ_128
673 default 256 if HZ_256
674 default 1200 if HZ_1200
678 tristate "SRM environment through procfs"
681 If you enable this option, a subdirectory inside /proc called
682 /proc/srm_environment will give you access to the all important
683 SRM environment variables (those which have a name) and also
684 to all others (by their internal number).
686 SRM is something like a BIOS for Alpha machines. There are some
687 other such BIOSes, like AlphaBIOS, which this driver cannot
688 support (hey, that's not SRM!).
690 Despite the fact that this driver doesn't work on all Alphas (but
691 only on those which have SRM as their firmware), it's save to
692 build it even if your particular machine doesn't know about SRM
693 (or if you intend to compile a generic kernel). It will simply
694 not create those subdirectory in /proc (and give you some warning,
697 This driver is also available as a module and will be called
702 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
703 # but we also need it if VGA_HOSE is set