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
16 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_CPU_VULNERABILITIES
30 select GENERIC_SMP_IDLE_THREAD
31 select HAVE_ARCH_AUDITSYSCALL
32 select HAVE_MOD_ARCH_SPECIFIC
33 select MODULES_USE_ELF_RELA
34 select ODD_RT_SIGACTION
36 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
37 select MMU_GATHER_NO_RANGE
39 select SPARSEMEM_EXTREME if SPARSEMEM
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
66 config GENERIC_ISA_DMA
80 prompt "Alpha system type"
83 This is the system type of your hardware. A "generic" kernel will
84 run on any supported Alpha system. However, if you configure a
85 kernel for your specific system, it will be faster and smaller.
87 To find out what type of Alpha system you have, you may want to
88 check out the Linux/Alpha FAQ, accessible on the WWW from
89 <http://www.alphalinux.org/>. In summary:
91 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
92 Alpha-XL XL-233, XL-266
93 AlphaBook1 Alpha laptop
94 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
95 Cabriolet AlphaPC64, AlphaPCI64
96 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
97 EB164 EB164 21164 evaluation board
98 EB64+ EB64+ 21064 evaluation board
99 EB66 EB66 21066 evaluation board
100 EB66+ EB66+ 21066 evaluation board
101 Jensen DECpc 150, DEC 2000 models 300, 500
104 Miata Personal Workstation 433/500/600 a/au
105 Marvel AlphaServer ES47 / ES80 / GS1280
107 Noname AXPpci33, UDB (Multia)
108 Noritake AS 1000A, AS 600A, AS 800
110 Rawhide AS 1200, AS 4000, AS 4100
111 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
113 Sable AS 2000, AS 2100
116 Titan AlphaServer ES45 / DS25 / DS15
117 Wildfire AlphaServer GS 40/80/160/320
119 If you don't know what to do, choose "generic".
126 A generic kernel will run on all supported Alpha hardware.
129 bool "Alcor/Alpha-XLT"
132 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
133 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
134 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
135 controller (256-bit memory bus) and a PCI interface. It also does
136 all the work required to support an external Bcache and to maintain
137 memory coherence when a PCI device DMAs into (or out of) memory.
142 XL-233 and XL-266-based Alpha systems.
147 Dec AlphaBook1/Burns Alpha-based laptops.
149 config ALPHA_AVANTI_CH
152 config ALPHA_CABRIOLET
155 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
156 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
157 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
158 Bcache SIMMs. Requires power supply with 3.3V output.
163 Various 21264 systems with the tsunami core logic chipset.
164 API Networks: 264DP, UP2000(+), CS20;
165 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
170 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
171 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
172 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
173 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
174 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
175 motherboard. Requires power supply with 3.3V output.
177 config ALPHA_EB64P_CH
183 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
184 identical to EB64+. Baby PC-AT size. Runs from standard PC power
185 supply. The EB66 schematic was published as a marketing poster
186 advertising the 21066 as "the first microprocessor in the world with
192 Later variant of the EB66 board.
197 Apparently an obscure OEM single-board computer based on the
198 Typhoon/Tsunami chipset family. Information on it is scanty.
205 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
206 of the first-generation Alpha systems. A number of these systems
207 seem to be available on the second- hand market. The Jensen is a
208 floor-standing tower system which originally used a 150MHz 21064 It
209 used programmable logic to interface a 486 EISA I/O bridge to the
215 A technical overview of this board is available at
216 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
222 AlphaServer 2100A-based systems.
227 AlphaServer ES47 / ES80 / GS1280 based on EV7.
233 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
239 AlphaServer 1000-based Alpha systems.
241 config ALPHA_NAUTILUS
244 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
246 config ALPHA_NONAME_CH
249 config ALPHA_NORITAKE
253 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>.
286 Digital AlphaServer 2000 and 2100-based systems.
294 Alpha 11164-based OEM single-board computer.
299 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
301 config ALPHA_WILDFIRE
304 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
308 # clear all implied options (don't want default values for those):
309 # Most of these machines have ISA slots; not exactly sure which don't,
310 # and this doesn't activate hordes of code, so do it always.
315 Find out whether you have ISA slots on your motherboard. ISA is the
316 name of a bus system, i.e. the way the CPU talks to the other stuff
317 inside your box. Other bus systems are PCI, EISA, MicroChannel
318 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
319 newer boards don't support it. If you have ISA, say Y, otherwise N.
327 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
330 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
331 UDB). This design was produced by Digital's Technical OEM (TOEM)
332 group. It uses the 21066 processor running at 166MHz or 233MHz. It
333 is a baby-AT size, and runs from a standard PC power supply. It has
334 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
335 2 versions, with either PS/2 or large DIN connectors for the
340 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
341 default y if !ALPHA_LYNX
345 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
350 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
355 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
358 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
359 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
360 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
361 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
362 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
363 Runs from standard PC power supply.
366 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
367 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
371 default y if ALPHA_LYNX && !ALPHA_EV5
375 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
379 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
380 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
383 prompt "EV56 CPU (speed >= 333MHz)?"
384 depends on ALPHA_NORITAKE || ALPHA_PRIMO
387 prompt "EV56 CPU (speed >= 400MHz)?"
388 depends on ALPHA_RAWHIDE
391 bool "EV5 CPU daughtercard (model 5/xxx)?"
392 depends on ALPHA_NORITAKE || ALPHA_MIKASA
394 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
397 bool "EV5 CPU(s) (model 5/xxx)?"
398 depends on ALPHA_SABLE
400 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
404 depends on ALPHA_LYNX
409 depends on ALPHA_SABLE || ALPHA_LYNX
414 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
419 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
424 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
428 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
429 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
431 Is this a machine based on the EV67 core? If in doubt, select N here
432 and the machine will be treated as an EV6.
436 depends on ALPHA_RAWHIDE
441 depends on ALPHA_RX164
444 config ALPHA_IRONGATE
446 depends on ALPHA_NAUTILUS
449 config GENERIC_HWEIGHT
451 default y if !ALPHA_EV67
455 depends on ALPHA_XL || ALPHA_AVANTI_CH
458 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
460 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
462 config ALPHA_BROKEN_IRQ_MASK
464 depends on ALPHA_GENERIC || ALPHA_PC164
469 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
472 Support VGA on an arbitrary hose; needed for several platforms
473 which always have multiple hoses, and whose consoles support it.
477 bool "Run under QEMU emulation"
478 depends on !ALPHA_GENERIC
480 Assume the presence of special features supported by QEMU PALcode
481 that reduce the overhead of system emulation.
483 Generic kernels will auto-detect QEMU. But when building a
484 system-specific kernel, the assumption is that we want to
485 eliminate as many runtime tests as possible.
491 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
493 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
495 There are two different types of booting firmware on Alphas: SRM,
496 which is command line driven, and ARC, which uses menus and arrow
497 keys. Details about the Linux/Alpha booting process are contained in
498 the Linux/Alpha FAQ, accessible on the WWW from
499 <http://www.alphalinux.org/>.
501 The usual way to load Linux on an Alpha machine is to use MILO
502 (a bootloader that lets you pass command line parameters to the
503 kernel just like lilo does for the x86 architecture) which can be
504 loaded either from ARC or can be installed directly as a permanent
505 firmware replacement from floppy (which requires changing a certain
506 jumper on the motherboard). If you want to do either of these, say N
507 here. If MILO doesn't work on your system (true for Jensen
508 motherboards), you can bypass it altogether and boot Linux directly
509 from an SRM console; say Y here in order to do that. Note that you
510 won't be able to boot from an IDE disk using SRM.
514 config ARCH_MAY_HAVE_PC_FDC
518 bool "Symmetric multi-processing support"
519 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
521 This enables support for systems with more than one CPU. If you have
522 a system with only one CPU, say N. If you have a system with more
525 If you say N here, the kernel will run on uni- and multiprocessor
526 machines, but will use only one CPU of a multiprocessor machine. If
527 you say Y here, the kernel will run on many, but not all,
528 uniprocessor machines. On a uniprocessor machine, the kernel
529 will run faster if you say N here.
531 See also the SMP-HOWTO available at
532 <https://www.tldp.org/docs.html#howto>.
534 If you don't know what to do here, say N.
537 int "Maximum number of CPUs (2-32)"
540 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
541 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
543 MARVEL support can handle a maximum of 32 CPUs, all the others
544 with working support have a maximum of 4 CPUs.
546 config ARCH_SPARSEMEM_ENABLE
547 bool "Sparse Memory Support"
549 Say Y to support efficient handling of discontiguous physical memory,
550 for systems that have huge holes in the physical address space.
553 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
554 default y if ALPHA_QEMU
555 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
556 default n if !ALPHA_SRM && !ALPHA_GENERIC
559 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
560 to sleep until the next interrupt. This may reduce the power
561 consumed, and the heat produced by the computer. However, it has
562 the side effect of making the cycle counter unreliable as a timing
563 device across the sleep.
565 For emulation under QEMU, definitely say Y here, as we have other
566 mechanisms for measuring time than the cycle counter.
568 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
569 MILO, sleep mode is not supported so you might as well say N here.
571 For SMP systems we cannot use the cycle counter for timing anyway,
572 so you might as well say Y here.
576 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
577 config ALPHA_LARGE_VMALLOC
580 Process creation and other aspects of virtual memory management can
581 be streamlined if we restrict the kernel to one PGD for all vmalloc
582 allocations. This equates to about 8GB.
584 Under normal circumstances, this is so far and above what is needed
585 as to be laughable. However, there are certain applications (such
586 as benchmark-grade in-kernel web serving) that can make use of as
587 much vmalloc space as is available.
589 Say N unless you know you need gobs and gobs of vmalloc space.
591 config VERBOSE_MCHECK
592 bool "Verbose Machine Checks"
594 config VERBOSE_MCHECK_ON
595 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
596 depends on VERBOSE_MCHECK
599 This option allows the default printing mode to be set, and then
600 possibly overridden by a boot command argument.
602 For example, if one wanted the option of printing verbose
603 machine checks, but wanted the default to be as if verbose
604 machine check printing was turned off, then one would choose
605 the printing mode to be 0. Then, upon reboot, one could add
606 the boot command line "verbose_mcheck=1" to get the normal
607 verbose machine check printing, or "verbose_mcheck=2" to get
608 the maximum information available.
610 Take the default (1) unless you want more control or more info.
613 prompt "Timer interrupt frequency (HZ)?"
614 default HZ_128 if ALPHA_QEMU
615 default HZ_1200 if ALPHA_RAWHIDE
618 The frequency at which timer interrupts occur. A high frequency
619 minimizes latency, whereas a low frequency minimizes overhead of
620 process accounting. The later effect is especially significant
621 when being run under QEMU.
623 Note that some Alpha hardware cannot change the interrupt frequency
624 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
644 default 128 if HZ_128
645 default 256 if HZ_256
646 default 1200 if HZ_1200
650 tristate "SRM environment through procfs"
653 If you enable this option, a subdirectory inside /proc called
654 /proc/srm_environment will give you access to the all important
655 SRM environment variables (those which have a name) and also
656 to all others (by their internal number).
658 SRM is something like a BIOS for Alpha machines. There are some
659 other such BIOSes, like AlphaBIOS, which this driver cannot
660 support (hey, that's not SRM!).
662 Despite the fact that this driver doesn't work on all Alphas (but
663 only on those which have SRM as their firmware), it's save to
664 build it even if your particular machine doesn't know about SRM
665 (or if you intend to compile a generic kernel). It will simply
666 not create those subdirectory in /proc (and give you some warning,
669 This driver is also available as a module and will be called
674 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
675 # but we also need it if VGA_HOSE is set