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 select SPARSEMEM_EXTREME if SPARSEMEM
45 The Alpha is a 64-bit general-purpose processor designed and
46 marketed by the Digital Equipment Corporation of blessed memory,
47 now Hewlett-Packard. The Alpha Linux project has a home page at
48 <http://www.alphalinux.org/>.
57 config ARCH_HAS_ILOG2_U32
61 config ARCH_HAS_ILOG2_U64
65 config GENERIC_CALIBRATE_DELAY
73 config GENERIC_ISA_DMA
87 prompt "Alpha system type"
90 This is the system type of your hardware. A "generic" kernel will
91 run on any supported Alpha system. However, if you configure a
92 kernel for your specific system, it will be faster and smaller.
94 To find out what type of Alpha system you have, you may want to
95 check out the Linux/Alpha FAQ, accessible on the WWW from
96 <http://www.alphalinux.org/>. In summary:
98 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
99 Alpha-XL XL-233, XL-266
100 AlphaBook1 Alpha laptop
101 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
102 Cabriolet AlphaPC64, AlphaPCI64
103 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
104 EB164 EB164 21164 evaluation board
105 EB64+ EB64+ 21064 evaluation board
106 EB66 EB66 21066 evaluation board
107 EB66+ EB66+ 21066 evaluation board
108 Jensen DECpc 150, DEC 2000 models 300, 500
111 Miata Personal Workstation 433/500/600 a/au
112 Marvel AlphaServer ES47 / ES80 / GS1280
114 Noname AXPpci33, UDB (Multia)
115 Noritake AS 1000A, AS 600A, AS 800
117 Rawhide AS 1200, AS 4000, AS 4100
118 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
120 Sable AS 2000, AS 2100
123 Titan AlphaServer ES45 / DS25 / DS15
124 Wildfire AlphaServer GS 40/80/160/320
126 If you don't know what to do, choose "generic".
133 A generic kernel will run on all supported Alpha hardware.
136 bool "Alcor/Alpha-XLT"
139 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
140 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
141 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
142 controller (256-bit memory bus) and a PCI interface. It also does
143 all the work required to support an external Bcache and to maintain
144 memory coherence when a PCI device DMAs into (or out of) memory.
149 XL-233 and XL-266-based Alpha systems.
154 Dec AlphaBook1/Burns Alpha-based laptops.
156 config ALPHA_AVANTI_CH
159 config ALPHA_CABRIOLET
162 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
163 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
164 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
165 Bcache SIMMs. Requires power supply with 3.3V output.
170 Various 21264 systems with the tsunami core logic chipset.
171 API Networks: 264DP, UP2000(+), CS20;
172 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
177 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
178 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
179 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
180 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
181 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
182 motherboard. Requires power supply with 3.3V output.
184 config ALPHA_EB64P_CH
190 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
191 identical to EB64+. Baby PC-AT size. Runs from standard PC power
192 supply. The EB66 schematic was published as a marketing poster
193 advertising the 21066 as "the first microprocessor in the world with
199 Later variant of the EB66 board.
204 Apparently an obscure OEM single-board computer based on the
205 Typhoon/Tsunami chipset family. Information on it is scanty.
212 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
213 of the first-generation Alpha systems. A number of these systems
214 seem to be available on the second- hand market. The Jensen is a
215 floor-standing tower system which originally used a 150MHz 21064 It
216 used programmable logic to interface a 486 EISA I/O bridge to the
222 A technical overview of this board is available at
223 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
229 AlphaServer 2100A-based systems.
234 AlphaServer ES47 / ES80 / GS1280 based on EV7.
240 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
246 AlphaServer 1000-based Alpha systems.
248 config ALPHA_NAUTILUS
251 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
253 config ALPHA_NONAME_CH
256 config ALPHA_NORITAKE
260 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
273 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
275 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
280 Samsung APC164UX. There is a page on known problems and workarounds
281 at <http://www.alphalinux.org/faq/FAQ-11.html>.
293 Digital AlphaServer 2000 and 2100-based systems.
301 Alpha 11164-based OEM single-board computer.
306 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
308 config ALPHA_WILDFIRE
311 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
315 # clear all implied options (don't want default values for those):
316 # Most of these machines have ISA slots; not exactly sure which don't,
317 # and this doesn't activate hordes of code, so do it always.
322 Find out whether you have ISA slots on your motherboard. ISA is the
323 name of a bus system, i.e. the way the CPU talks to the other stuff
324 inside your box. Other bus systems are PCI, EISA, MicroChannel
325 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
326 newer boards don't support it. If you have ISA, say Y, otherwise N.
334 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
337 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
338 UDB). This design was produced by Digital's Technical OEM (TOEM)
339 group. It uses the 21066 processor running at 166MHz or 233MHz. It
340 is a baby-AT size, and runs from a standard PC power supply. It has
341 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
342 2 versions, with either PS/2 or large DIN connectors for the
347 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
348 default y if !ALPHA_LYNX
352 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
357 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
362 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
365 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
366 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
367 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
368 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
369 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
370 Runs from standard PC power supply.
373 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
374 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
378 default y if ALPHA_LYNX && !ALPHA_EV5
382 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
386 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
387 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
390 prompt "EV56 CPU (speed >= 333MHz)?"
391 depends on ALPHA_NORITAKE || ALPHA_PRIMO
394 prompt "EV56 CPU (speed >= 400MHz)?"
395 depends on ALPHA_RAWHIDE
398 bool "EV5 CPU daughtercard (model 5/xxx)?"
399 depends on ALPHA_NORITAKE || ALPHA_MIKASA
401 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
404 bool "EV5 CPU(s) (model 5/xxx)?"
405 depends on ALPHA_SABLE
407 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
411 depends on ALPHA_LYNX
416 depends on ALPHA_SABLE || ALPHA_LYNX
421 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
426 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
431 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
435 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
436 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
438 Is this a machine based on the EV67 core? If in doubt, select N here
439 and the machine will be treated as an EV6.
443 depends on ALPHA_RAWHIDE
448 depends on ALPHA_RX164
451 config ALPHA_IRONGATE
453 depends on ALPHA_NAUTILUS
456 config GENERIC_HWEIGHT
458 default y if !ALPHA_EV67
462 depends on ALPHA_XL || ALPHA_AVANTI_CH
465 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
467 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
469 config ALPHA_BROKEN_IRQ_MASK
471 depends on ALPHA_GENERIC || ALPHA_PC164
476 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
479 Support VGA on an arbitrary hose; needed for several platforms
480 which always have multiple hoses, and whose consoles support it.
484 bool "Run under QEMU emulation"
485 depends on !ALPHA_GENERIC
487 Assume the presence of special features supported by QEMU PALcode
488 that reduce the overhead of system emulation.
490 Generic kernels will auto-detect QEMU. But when building a
491 system-specific kernel, the assumption is that we want to
492 eliminate as many runtime tests as possible.
498 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
500 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
502 There are two different types of booting firmware on Alphas: SRM,
503 which is command line driven, and ARC, which uses menus and arrow
504 keys. Details about the Linux/Alpha booting process are contained in
505 the Linux/Alpha FAQ, accessible on the WWW from
506 <http://www.alphalinux.org/>.
508 The usual way to load Linux on an Alpha machine is to use MILO
509 (a bootloader that lets you pass command line parameters to the
510 kernel just like lilo does for the x86 architecture) which can be
511 loaded either from ARC or can be installed directly as a permanent
512 firmware replacement from floppy (which requires changing a certain
513 jumper on the motherboard). If you want to do either of these, say N
514 here. If MILO doesn't work on your system (true for Jensen
515 motherboards), you can bypass it altogether and boot Linux directly
516 from an SRM console; say Y here in order to do that. Note that you
517 won't be able to boot from an IDE disk using SRM.
521 config ARCH_MAY_HAVE_PC_FDC
525 bool "Symmetric multi-processing support"
526 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
528 This enables support for systems with more than one CPU. If you have
529 a system with only one CPU, say N. If you have a system with more
532 If you say N here, the kernel will run on uni- and multiprocessor
533 machines, but will use only one CPU of a multiprocessor machine. If
534 you say Y here, the kernel will run on many, but not all,
535 uniprocessor machines. On a uniprocessor machine, the kernel
536 will run faster if you say N here.
538 See also the SMP-HOWTO available at
539 <http://www.tldp.org/docs.html#howto>.
541 If you don't know what to do here, say N.
544 int "Maximum number of CPUs (2-32)"
547 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
548 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
550 MARVEL support can handle a maximum of 32 CPUs, all the others
551 with working support have a maximum of 4 CPUs.
553 config ARCH_DISCONTIGMEM_ENABLE
554 bool "Discontiguous Memory Support"
557 Say Y to support efficient handling of discontiguous physical memory,
558 for architectures which are either NUMA (Non-Uniform Memory Access)
559 or have huge holes in the physical address space for other reasons.
560 See <file:Documentation/vm/numa.rst> for more.
562 config ARCH_SPARSEMEM_ENABLE
563 bool "Sparse Memory Support"
565 Say Y to support efficient handling of discontiguous physical memory,
566 for systems that have huge holes in the physical address space.
569 bool "NUMA Support (EXPERIMENTAL)"
570 depends on DISCONTIGMEM && BROKEN
572 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
573 Access). This option is for configuring high-end multiprocessor
574 server machines. If in doubt, say N.
577 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
578 default y if ALPHA_QEMU
579 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
580 default n if !ALPHA_SRM && !ALPHA_GENERIC
583 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
584 to sleep until the next interrupt. This may reduce the power
585 consumed, and the heat produced by the computer. However, it has
586 the side effect of making the cycle counter unreliable as a timing
587 device across the sleep.
589 For emulation under QEMU, definitely say Y here, as we have other
590 mechanisms for measuring time than the cycle counter.
592 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
593 MILO, sleep mode is not supported so you might as well say N here.
595 For SMP systems we cannot use the cycle counter for timing anyway,
596 so you might as well say Y here.
603 depends on NEED_MULTIPLE_NODES
605 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
606 config ALPHA_LARGE_VMALLOC
609 Process creation and other aspects of virtual memory management can
610 be streamlined if we restrict the kernel to one PGD for all vmalloc
611 allocations. This equates to about 8GB.
613 Under normal circumstances, this is so far and above what is needed
614 as to be laughable. However, there are certain applications (such
615 as benchmark-grade in-kernel web serving) that can make use of as
616 much vmalloc space as is available.
618 Say N unless you know you need gobs and gobs of vmalloc space.
620 config VERBOSE_MCHECK
621 bool "Verbose Machine Checks"
623 config VERBOSE_MCHECK_ON
624 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
625 depends on VERBOSE_MCHECK
628 This option allows the default printing mode to be set, and then
629 possibly overridden by a boot command argument.
631 For example, if one wanted the option of printing verbose
632 machine checks, but wanted the default to be as if verbose
633 machine check printing was turned off, then one would choose
634 the printing mode to be 0. Then, upon reboot, one could add
635 the boot command line "verbose_mcheck=1" to get the normal
636 verbose machine check printing, or "verbose_mcheck=2" to get
637 the maximum information available.
639 Take the default (1) unless you want more control or more info.
642 prompt "Timer interrupt frequency (HZ)?"
643 default HZ_128 if ALPHA_QEMU
644 default HZ_1200 if ALPHA_RAWHIDE
647 The frequency at which timer interrupts occur. A high frequency
648 minimizes latency, whereas a low frequency minimizes overhead of
649 process accounting. The later effect is especially significant
650 when being run under QEMU.
652 Note that some Alpha hardware cannot change the interrupt frequency
653 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
673 default 128 if HZ_128
674 default 256 if HZ_256
675 default 1200 if HZ_1200
679 tristate "SRM environment through procfs"
682 If you enable this option, a subdirectory inside /proc called
683 /proc/srm_environment will give you access to the all important
684 SRM environment variables (those which have a name) and also
685 to all others (by their internal number).
687 SRM is something like a BIOS for Alpha machines. There are some
688 other such BIOSes, like AlphaBIOS, which this driver cannot
689 support (hey, that's not SRM!).
691 Despite the fact that this driver doesn't work on all Alphas (but
692 only on those which have SRM as their firmware), it's save to
693 build it even if your particular machine doesn't know about SRM
694 (or if you intend to compile a generic kernel). It will simply
695 not create those subdirectory in /proc (and give you some warning,
698 This driver is also available as a module and will be called
703 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
704 # but we also need it if VGA_HOSE is set