1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF
11 select HAVE_PCSPKR_PLATFORM
12 select HAVE_PERF_EVENTS
13 select NEED_DMA_MAP_STATE
14 select NEED_SG_DMA_LENGTH
16 select GENERIC_IRQ_PROBE
17 select AUTO_IRQ_AFFINITY if SMP
18 select GENERIC_IRQ_SHOW
19 select ARCH_WANT_IPC_PARSE_VERSION
20 select ARCH_HAVE_NMI_SAFE_CMPXCHG
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CPU_VULNERABILITIES
24 select GENERIC_SMP_IDLE_THREAD
25 select GENERIC_STRNCPY_FROM_USER
26 select GENERIC_STRNLEN_USER
27 select HAVE_ARCH_AUDITSYSCALL
28 select HAVE_MOD_ARCH_SPECIFIC
29 select MODULES_USE_ELF_RELA
30 select ODD_RT_SIGACTION
32 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
34 The Alpha is a 64-bit general-purpose processor designed and
35 marketed by the Digital Equipment Corporation of blessed memory,
36 now Hewlett-Packard. The Alpha Linux project has a home page at
37 <http://www.alphalinux.org/>.
46 config RWSEM_GENERIC_SPINLOCK
49 config RWSEM_XCHGADD_ALGORITHM
53 config ARCH_HAS_ILOG2_U32
57 config ARCH_HAS_ILOG2_U64
61 config GENERIC_CALIBRATE_DELAY
69 config GENERIC_ISA_DMA
83 prompt "Alpha system type"
86 This is the system type of your hardware. A "generic" kernel will
87 run on any supported Alpha system. However, if you configure a
88 kernel for your specific system, it will be faster and smaller.
90 To find out what type of Alpha system you have, you may want to
91 check out the Linux/Alpha FAQ, accessible on the WWW from
92 <http://www.alphalinux.org/>. In summary:
94 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
95 Alpha-XL XL-233, XL-266
96 AlphaBook1 Alpha laptop
97 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
98 Cabriolet AlphaPC64, AlphaPCI64
99 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
100 EB164 EB164 21164 evaluation board
101 EB64+ EB64+ 21064 evaluation board
102 EB66 EB66 21066 evaluation board
103 EB66+ EB66+ 21066 evaluation board
104 Jensen DECpc 150, DEC 2000 models 300, 500
107 Miata Personal Workstation 433/500/600 a/au
108 Marvel AlphaServer ES47 / ES80 / GS1280
110 Noname AXPpci33, UDB (Multia)
111 Noritake AS 1000A, AS 600A, AS 800
113 Rawhide AS 1200, AS 4000, AS 4100
114 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
116 Sable AS 2000, AS 2100
119 Titan AlphaServer ES45 / DS25 / DS15
120 Wildfire AlphaServer GS 40/80/160/320
122 If you don't know what to do, choose "generic".
128 A generic kernel will run on all supported Alpha hardware.
131 bool "Alcor/Alpha-XLT"
133 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
134 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
135 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
136 controller (256-bit memory bus) and a PCI interface. It also does
137 all the work required to support an external Bcache and to maintain
138 memory coherence when a PCI device DMAs into (or out of) memory.
143 XL-233 and XL-266-based Alpha systems.
148 Dec AlphaBook1/Burns Alpha-based laptops.
150 config ALPHA_AVANTI_CH
153 config ALPHA_CABRIOLET
156 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
157 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
158 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
159 Bcache SIMMs. Requires power supply with 3.3V output.
164 Various 21264 systems with the tsunami core logic chipset.
165 API Networks: 264DP, UP2000(+), CS20;
166 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
171 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
172 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
173 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
174 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
175 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
176 motherboard. Requires power supply with 3.3V output.
178 config ALPHA_EB64P_CH
184 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
185 identical to EB64+. Baby PC-AT size. Runs from standard PC power
186 supply. The EB66 schematic was published as a marketing poster
187 advertising the 21066 as "the first microprocessor in the world with
193 Later variant of the EB66 board.
198 Apparently an obscure OEM single-board computer based on the
199 Typhoon/Tsunami chipset family. Information on it is scanty.
204 select DMA_DIRECT_OPS
206 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
207 of the first-generation Alpha systems. A number of these systems
208 seem to be available on the second- hand market. The Jensen is a
209 floor-standing tower system which originally used a 150MHz 21064 It
210 used programmable logic to interface a 486 EISA I/O bridge to the
216 A technical overview of this board is available at
217 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
222 AlphaServer 2100A-based systems.
227 AlphaServer ES47 / ES80 / GS1280 based on EV7.
232 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
238 AlphaServer 1000-based Alpha systems.
240 config ALPHA_NAUTILUS
243 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
245 config ALPHA_NONAME_CH
248 config ALPHA_NORITAKE
251 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
263 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
265 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
270 Samsung APC164UX. There is a page on known problems and workarounds
271 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_JENSEN
324 select GENERIC_PCI_IOMAP
327 Find out whether you have a PCI motherboard. PCI is the name of a
328 bus system, i.e. the way the CPU talks to the other stuff inside
329 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
330 VESA. If you have PCI, say Y, otherwise N.
341 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
344 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
345 UDB). This design was produced by Digital's Technical OEM (TOEM)
346 group. It uses the 21066 processor running at 166MHz or 233MHz. It
347 is a baby-AT size, and runs from a standard PC power supply. It has
348 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
349 2 versions, with either PS/2 or large DIN connectors for the
354 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
355 default y if !ALPHA_LYNX
359 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
364 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
369 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
372 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
373 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
374 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
375 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
376 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
377 Runs from standard PC power supply.
380 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
381 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
385 default y if ALPHA_LYNX && !ALPHA_EV5
389 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
393 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
394 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
397 prompt "EV56 CPU (speed >= 333MHz)?"
398 depends on ALPHA_NORITAKE || ALPHA_PRIMO
401 prompt "EV56 CPU (speed >= 400MHz)?"
402 depends on ALPHA_RAWHIDE
405 bool "EV5 CPU daughtercard (model 5/xxx)?"
406 depends on ALPHA_NORITAKE || ALPHA_MIKASA
408 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
411 bool "EV5 CPU(s) (model 5/xxx)?"
412 depends on ALPHA_SABLE
414 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
418 depends on ALPHA_LYNX
423 depends on ALPHA_SABLE || ALPHA_LYNX
428 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
433 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
438 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
442 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
443 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
445 Is this a machine based on the EV67 core? If in doubt, select N here
446 and the machine will be treated as an EV6.
450 depends on ALPHA_RAWHIDE
455 depends on ALPHA_RX164
458 config ALPHA_IRONGATE
460 depends on ALPHA_NAUTILUS
463 config GENERIC_HWEIGHT
465 default y if !ALPHA_EV67
469 depends on ALPHA_XL || ALPHA_AVANTI_CH
472 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
474 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
476 config ALPHA_BROKEN_IRQ_MASK
478 depends on ALPHA_GENERIC || ALPHA_PC164
483 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
486 Support VGA on an arbitrary hose; needed for several platforms
487 which always have multiple hoses, and whose consoles support it.
491 bool "Run under QEMU emulation"
492 depends on !ALPHA_GENERIC
494 Assume the presence of special features supported by QEMU PALcode
495 that reduce the overhead of system emulation.
497 Generic kernels will auto-detect QEMU. But when building a
498 system-specific kernel, the assumption is that we want to
499 eliminate as many runtime tests as possible.
505 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
507 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
509 There are two different types of booting firmware on Alphas: SRM,
510 which is command line driven, and ARC, which uses menus and arrow
511 keys. Details about the Linux/Alpha booting process are contained in
512 the Linux/Alpha FAQ, accessible on the WWW from
513 <http://www.alphalinux.org/>.
515 The usual way to load Linux on an Alpha machine is to use MILO
516 (a bootloader that lets you pass command line parameters to the
517 kernel just like lilo does for the x86 architecture) which can be
518 loaded either from ARC or can be installed directly as a permanent
519 firmware replacement from floppy (which requires changing a certain
520 jumper on the motherboard). If you want to do either of these, say N
521 here. If MILO doesn't work on your system (true for Jensen
522 motherboards), you can bypass it altogether and boot Linux directly
523 from an SRM console; say Y here in order to do that. Note that you
524 won't be able to boot from an IDE disk using SRM.
530 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
533 config ARCH_MAY_HAVE_PC_FDC
537 bool "Symmetric multi-processing support"
538 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
540 This enables support for systems with more than one CPU. If you have
541 a system with only one CPU, say N. If you have a system with more
544 If you say N here, the kernel will run on uni- and multiprocessor
545 machines, but will use only one CPU of a multiprocessor machine. If
546 you say Y here, the kernel will run on many, but not all,
547 uniprocessor machines. On a uniprocessor machine, the kernel
548 will run faster if you say N here.
550 See also the SMP-HOWTO available at
551 <http://www.tldp.org/docs.html#howto>.
553 If you don't know what to do here, say N.
556 int "Maximum number of CPUs (2-32)"
559 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
560 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
562 MARVEL support can handle a maximum of 32 CPUs, all the others
563 with working support have a maximum of 4 CPUs.
565 config ARCH_DISCONTIGMEM_ENABLE
566 bool "Discontiguous Memory Support"
568 Say Y to support efficient handling of discontiguous physical memory,
569 for architectures which are either NUMA (Non-Uniform Memory Access)
570 or have huge holes in the physical address space for other reasons.
571 See <file:Documentation/vm/numa.rst> for more.
574 bool "NUMA Support (EXPERIMENTAL)"
575 depends on DISCONTIGMEM && BROKEN
577 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
578 Access). This option is for configuring high-end multiprocessor
579 server machines. If in doubt, say N.
582 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
583 default y if ALPHA_QEMU
584 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
585 default n if !ALPHA_SRM && !ALPHA_GENERIC
588 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
589 to sleep until the next interrupt. This may reduce the power
590 consumed, and the heat produced by the computer. However, it has
591 the side effect of making the cycle counter unreliable as a timing
592 device across the sleep.
594 For emulation under QEMU, definitely say Y here, as we have other
595 mechanisms for measuring time than the cycle counter.
597 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
598 MILO, sleep mode is not supported so you might as well say N here.
600 For SMP systems we cannot use the cycle counter for timing anyway,
601 so you might as well say Y here.
608 depends on NEED_MULTIPLE_NODES
610 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
611 config ALPHA_LARGE_VMALLOC
614 Process creation and other aspects of virtual memory management can
615 be streamlined if we restrict the kernel to one PGD for all vmalloc
616 allocations. This equates to about 8GB.
618 Under normal circumstances, this is so far and above what is needed
619 as to be laughable. However, there are certain applications (such
620 as benchmark-grade in-kernel web serving) that can make use of as
621 much vmalloc space as is available.
623 Say N unless you know you need gobs and gobs of vmalloc space.
625 config VERBOSE_MCHECK
626 bool "Verbose Machine Checks"
628 config VERBOSE_MCHECK_ON
629 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
630 depends on VERBOSE_MCHECK
633 This option allows the default printing mode to be set, and then
634 possibly overridden by a boot command argument.
636 For example, if one wanted the option of printing verbose
637 machine checks, but wanted the default to be as if verbose
638 machine check printing was turned off, then one would choose
639 the printing mode to be 0. Then, upon reboot, one could add
640 the boot command line "verbose_mcheck=1" to get the normal
641 verbose machine check printing, or "verbose_mcheck=2" to get
642 the maximum information available.
644 Take the default (1) unless you want more control or more info.
647 prompt "Timer interrupt frequency (HZ)?"
648 default HZ_128 if ALPHA_QEMU
649 default HZ_1200 if ALPHA_RAWHIDE
652 The frequency at which timer interrupts occur. A high frequency
653 minimizes latency, whereas a low frequency minimizes overhead of
654 process accounting. The later effect is especially significant
655 when being run under QEMU.
657 Note that some Alpha hardware cannot change the interrupt frequency
658 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
678 default 128 if HZ_128
679 default 256 if HZ_256
680 default 1200 if HZ_1200
683 source "drivers/pci/Kconfig"
684 source "drivers/eisa/Kconfig"
686 source "drivers/pcmcia/Kconfig"
689 tristate "SRM environment through procfs"
692 If you enable this option, a subdirectory inside /proc called
693 /proc/srm_environment will give you access to the all important
694 SRM environment variables (those which have a name) and also
695 to all others (by their internal number).
697 SRM is something like a BIOS for Alpha machines. There are some
698 other such BIOSes, like AlphaBIOS, which this driver cannot
699 support (hey, that's not SRM!).
701 Despite the fact that this driver doesn't work on all Alphas (but
702 only on those which have SRM as their firmware), it's save to
703 build it even if your particular machine doesn't know about SRM
704 (or if you intend to compile a generic kernel). It will simply
705 not create those subdirectory in /proc (and give you some warning,
708 This driver is also available as a module and will be called
713 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
714 # but we also need it if VGA_HOSE is set