1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_USTAT_F_TINODE
6 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select ARCH_MIGHT_HAVE_PC_SERIO
9 select ARCH_NO_SG_CHAIN
10 select ARCH_USE_CMPXCHG_LOCKREF
12 select FORCE_PCI if !ALPHA_JENSEN
13 select PCI_DOMAINS if PCI
14 select PCI_SYSCALL if PCI
15 select HAVE_ASM_MODVERSIONS
16 select HAVE_PCSPKR_PLATFORM
17 select HAVE_PERF_EVENTS
18 select NEED_DMA_MAP_STATE
19 select NEED_SG_DMA_LENGTH
20 select GENERIC_IRQ_PROBE
21 select GENERIC_PCI_IOMAP
22 select AUTO_IRQ_AFFINITY if SMP
23 select GENERIC_IRQ_SHOW
24 select ARCH_WANT_IPC_PARSE_VERSION
25 select ARCH_HAVE_NMI_SAFE_CMPXCHG
27 select GENERIC_CPU_VULNERABILITIES
28 select GENERIC_SMP_IDLE_THREAD
29 select HAVE_ARCH_AUDITSYSCALL
30 select HAVE_MOD_ARCH_SPECIFIC
31 select MODULES_USE_ELF_RELA
32 select ODD_RT_SIGACTION
34 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
35 select MMU_GATHER_NO_RANGE
36 select SPARSEMEM_EXTREME if SPARSEMEM
39 The Alpha is a 64-bit general-purpose processor designed and
40 marketed by the Digital Equipment Corporation of blessed memory,
41 now Hewlett-Packard. The Alpha Linux project has a home page at
42 <http://www.alphalinux.org/>.
51 config ARCH_HAS_ILOG2_U32
55 config ARCH_HAS_ILOG2_U64
59 config GENERIC_CALIBRATE_DELAY
63 config GENERIC_ISA_DMA
77 prompt "Alpha system type"
80 This is the system type of your hardware. A "generic" kernel will
81 run on any supported Alpha system. However, if you configure a
82 kernel for your specific system, it will be faster and smaller.
84 To find out what type of Alpha system you have, you may want to
85 check out the Linux/Alpha FAQ, accessible on the WWW from
86 <http://www.alphalinux.org/>. In summary:
88 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
89 Alpha-XL XL-233, XL-266
90 AlphaBook1 Alpha laptop
91 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
92 Cabriolet AlphaPC64, AlphaPCI64
93 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
94 EB164 EB164 21164 evaluation board
95 EB64+ EB64+ 21064 evaluation board
96 EB66 EB66 21066 evaluation board
97 EB66+ EB66+ 21066 evaluation board
98 Jensen DECpc 150, DEC 2000 models 300, 500
101 Miata Personal Workstation 433/500/600 a/au
102 Marvel AlphaServer ES47 / ES80 / GS1280
104 Noname AXPpci33, UDB (Multia)
105 Noritake AS 1000A, AS 600A, AS 800
107 Rawhide AS 1200, AS 4000, AS 4100
108 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
110 Sable AS 2000, AS 2100
113 Titan AlphaServer ES45 / DS25 / DS15
114 Wildfire AlphaServer GS 40/80/160/320
116 If you don't know what to do, choose "generic".
123 A generic kernel will run on all supported Alpha hardware.
126 bool "Alcor/Alpha-XLT"
129 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
130 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
131 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
132 controller (256-bit memory bus) and a PCI interface. It also does
133 all the work required to support an external Bcache and to maintain
134 memory coherence when a PCI device DMAs into (or out of) memory.
139 XL-233 and XL-266-based Alpha systems.
144 Dec AlphaBook1/Burns Alpha-based laptops.
146 config ALPHA_AVANTI_CH
149 config ALPHA_CABRIOLET
152 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
153 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
154 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
155 Bcache SIMMs. Requires power supply with 3.3V output.
160 Various 21264 systems with the tsunami core logic chipset.
161 API Networks: 264DP, UP2000(+), CS20;
162 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
167 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
168 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
169 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
170 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
171 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
172 motherboard. Requires power supply with 3.3V output.
174 config ALPHA_EB64P_CH
180 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
181 identical to EB64+. Baby PC-AT size. Runs from standard PC power
182 supply. The EB66 schematic was published as a marketing poster
183 advertising the 21066 as "the first microprocessor in the world with
189 Later variant of the EB66 board.
194 Apparently an obscure OEM single-board computer based on the
195 Typhoon/Tsunami chipset family. Information on it is scanty.
201 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
202 of the first-generation Alpha systems. A number of these systems
203 seem to be available on the second- hand market. The Jensen is a
204 floor-standing tower system which originally used a 150MHz 21064 It
205 used programmable logic to interface a 486 EISA I/O bridge to the
211 A technical overview of this board is available at
212 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
218 AlphaServer 2100A-based systems.
223 AlphaServer ES47 / ES80 / GS1280 based on EV7.
229 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
235 AlphaServer 1000-based Alpha systems.
237 config ALPHA_NAUTILUS
240 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
242 config ALPHA_NONAME_CH
245 config ALPHA_NORITAKE
249 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
262 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
264 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
269 Samsung APC164UX. There is a page on known problems and workarounds
270 at <http://www.alphalinux.org/faq/FAQ-11.html>.
282 Digital AlphaServer 2000 and 2100-based systems.
290 Alpha 11164-based OEM single-board computer.
295 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
297 config ALPHA_WILDFIRE
300 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
304 # clear all implied options (don't want default values for those):
305 # Most of these machines have ISA slots; not exactly sure which don't,
306 # and this doesn't activate hordes of code, so do it always.
311 Find out whether you have ISA slots on your motherboard. ISA is the
312 name of a bus system, i.e. the way the CPU talks to the other stuff
313 inside your box. Other bus systems are PCI, EISA, MicroChannel
314 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
315 newer boards don't support it. If you have ISA, say Y, otherwise N.
323 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
326 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
327 UDB). This design was produced by Digital's Technical OEM (TOEM)
328 group. It uses the 21066 processor running at 166MHz or 233MHz. It
329 is a baby-AT size, and runs from a standard PC power supply. It has
330 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
331 2 versions, with either PS/2 or large DIN connectors for the
336 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
337 default y if !ALPHA_LYNX
341 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
346 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
351 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
354 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
355 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
356 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
357 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
358 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
359 Runs from standard PC power supply.
362 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
363 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
367 default y if ALPHA_LYNX && !ALPHA_EV5
371 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
375 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
376 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
379 prompt "EV56 CPU (speed >= 333MHz)?"
380 depends on ALPHA_NORITAKE || ALPHA_PRIMO
383 prompt "EV56 CPU (speed >= 400MHz)?"
384 depends on ALPHA_RAWHIDE
387 bool "EV5 CPU daughtercard (model 5/xxx)?"
388 depends on ALPHA_NORITAKE || ALPHA_MIKASA
390 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
393 bool "EV5 CPU(s) (model 5/xxx)?"
394 depends on ALPHA_SABLE
396 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
400 depends on ALPHA_LYNX
405 depends on ALPHA_SABLE || ALPHA_LYNX
410 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
415 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
420 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
424 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
425 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
427 Is this a machine based on the EV67 core? If in doubt, select N here
428 and the machine will be treated as an EV6.
432 depends on ALPHA_RAWHIDE
437 depends on ALPHA_RX164
440 config ALPHA_IRONGATE
442 depends on ALPHA_NAUTILUS
445 config GENERIC_HWEIGHT
447 default y if !ALPHA_EV67
451 depends on ALPHA_XL || ALPHA_AVANTI_CH
454 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
456 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
458 config ALPHA_BROKEN_IRQ_MASK
460 depends on ALPHA_GENERIC || ALPHA_PC164
465 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
468 Support VGA on an arbitrary hose; needed for several platforms
469 which always have multiple hoses, and whose consoles support it.
473 bool "Run under QEMU emulation"
474 depends on !ALPHA_GENERIC
476 Assume the presence of special features supported by QEMU PALcode
477 that reduce the overhead of system emulation.
479 Generic kernels will auto-detect QEMU. But when building a
480 system-specific kernel, the assumption is that we want to
481 eliminate as many runtime tests as possible.
487 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
489 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
491 There are two different types of booting firmware on Alphas: SRM,
492 which is command line driven, and ARC, which uses menus and arrow
493 keys. Details about the Linux/Alpha booting process are contained in
494 the Linux/Alpha FAQ, accessible on the WWW from
495 <http://www.alphalinux.org/>.
497 The usual way to load Linux on an Alpha machine is to use MILO
498 (a bootloader that lets you pass command line parameters to the
499 kernel just like lilo does for the x86 architecture) which can be
500 loaded either from ARC or can be installed directly as a permanent
501 firmware replacement from floppy (which requires changing a certain
502 jumper on the motherboard). If you want to do either of these, say N
503 here. If MILO doesn't work on your system (true for Jensen
504 motherboards), you can bypass it altogether and boot Linux directly
505 from an SRM console; say Y here in order to do that. Note that you
506 won't be able to boot from an IDE disk using SRM.
510 config ARCH_MAY_HAVE_PC_FDC
514 bool "Symmetric multi-processing support"
515 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
517 This enables support for systems with more than one CPU. If you have
518 a system with only one CPU, say N. If you have a system with more
521 If you say N here, the kernel will run on uni- and multiprocessor
522 machines, but will use only one CPU of a multiprocessor machine. If
523 you say Y here, the kernel will run on many, but not all,
524 uniprocessor machines. On a uniprocessor machine, the kernel
525 will run faster if you say N here.
527 See also the SMP-HOWTO available at
528 <https://www.tldp.org/docs.html#howto>.
530 If you don't know what to do here, say N.
533 int "Maximum number of CPUs (2-32)"
536 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
537 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
539 MARVEL support can handle a maximum of 32 CPUs, all the others
540 with working support have a maximum of 4 CPUs.
542 config ARCH_SPARSEMEM_ENABLE
543 bool "Sparse Memory Support"
545 Say Y to support efficient handling of discontiguous physical memory,
546 for systems that have huge holes in the physical address space.
549 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
550 default y if ALPHA_QEMU
551 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
552 default n if !ALPHA_SRM && !ALPHA_GENERIC
555 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
556 to sleep until the next interrupt. This may reduce the power
557 consumed, and the heat produced by the computer. However, it has
558 the side effect of making the cycle counter unreliable as a timing
559 device across the sleep.
561 For emulation under QEMU, definitely say Y here, as we have other
562 mechanisms for measuring time than the cycle counter.
564 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
565 MILO, sleep mode is not supported so you might as well say N here.
567 For SMP systems we cannot use the cycle counter for timing anyway,
568 so you might as well say Y here.
572 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
573 config ALPHA_LARGE_VMALLOC
576 Process creation and other aspects of virtual memory management can
577 be streamlined if we restrict the kernel to one PGD for all vmalloc
578 allocations. This equates to about 8GB.
580 Under normal circumstances, this is so far and above what is needed
581 as to be laughable. However, there are certain applications (such
582 as benchmark-grade in-kernel web serving) that can make use of as
583 much vmalloc space as is available.
585 Say N unless you know you need gobs and gobs of vmalloc space.
587 config VERBOSE_MCHECK
588 bool "Verbose Machine Checks"
590 config VERBOSE_MCHECK_ON
591 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
592 depends on VERBOSE_MCHECK
595 This option allows the default printing mode to be set, and then
596 possibly overridden by a boot command argument.
598 For example, if one wanted the option of printing verbose
599 machine checks, but wanted the default to be as if verbose
600 machine check printing was turned off, then one would choose
601 the printing mode to be 0. Then, upon reboot, one could add
602 the boot command line "verbose_mcheck=1" to get the normal
603 verbose machine check printing, or "verbose_mcheck=2" to get
604 the maximum information available.
606 Take the default (1) unless you want more control or more info.
609 prompt "Timer interrupt frequency (HZ)?"
610 default HZ_128 if ALPHA_QEMU
611 default HZ_1200 if ALPHA_RAWHIDE
614 The frequency at which timer interrupts occur. A high frequency
615 minimizes latency, whereas a low frequency minimizes overhead of
616 process accounting. The later effect is especially significant
617 when being run under QEMU.
619 Note that some Alpha hardware cannot change the interrupt frequency
620 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
640 default 128 if HZ_128
641 default 256 if HZ_256
642 default 1200 if HZ_1200
646 tristate "SRM environment through procfs"
649 If you enable this option, a subdirectory inside /proc called
650 /proc/srm_environment will give you access to the all important
651 SRM environment variables (those which have a name) and also
652 to all others (by their internal number).
654 SRM is something like a BIOS for Alpha machines. There are some
655 other such BIOSes, like AlphaBIOS, which this driver cannot
656 support (hey, that's not SRM!).
658 Despite the fact that this driver doesn't work on all Alphas (but
659 only on those which have SRM as their firmware), it's save to
660 build it even if your particular machine doesn't know about SRM
661 (or if you intend to compile a generic kernel). It will simply
662 not create those subdirectory in /proc (and give you some warning,
665 This driver is also available as a module and will be called
670 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
671 # but we also need it if VGA_HOSE is set