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1config ALPHA
2 bool
3 default y
4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select ARCH_USE_CMPXCHG_LOCKREF
7 select HAVE_AOUT
8 select HAVE_IDE
9 select HAVE_OPROFILE
10 select HAVE_PCSPKR_PLATFORM
11 select HAVE_PERF_EVENTS
12 select VIRT_TO_BUS
13 select GENERIC_IRQ_PROBE
14 select AUTO_IRQ_AFFINITY if SMP
15 select GENERIC_IRQ_SHOW
16 select ARCH_WANT_OPTIONAL_GPIOLIB
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select ARCH_HAVE_NMI_SAFE_CMPXCHG
19 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
20 select AUDIT_ARCH
21 select GENERIC_CLOCKEVENTS
22 select GENERIC_SMP_IDLE_THREAD
23 select GENERIC_STRNCPY_FROM_USER
24 select GENERIC_STRNLEN_USER
25 select HAVE_ARCH_AUDITSYSCALL
26 select HAVE_MOD_ARCH_SPECIFIC
27 select MODULES_USE_ELF_RELA
28 select ODD_RT_SIGACTION
29 select OLD_SIGSUSPEND
30 help
31 The Alpha is a 64-bit general-purpose processor designed and
32 marketed by the Digital Equipment Corporation of blessed memory,
33 now Hewlett-Packard. The Alpha Linux project has a home page at
34 <http://www.alphalinux.org/>.
35
36config 64BIT
37 def_bool y
38
39config MMU
40 bool
41 default y
42
43config RWSEM_GENERIC_SPINLOCK
44 bool
45
46config RWSEM_XCHGADD_ALGORITHM
47 bool
48 default y
49
50config ARCH_HAS_ILOG2_U32
51 bool
52 default n
53
54config ARCH_HAS_ILOG2_U64
55 bool
56 default n
57
58config GENERIC_CALIBRATE_DELAY
59 bool
60 default y
61
62config ZONE_DMA
63 bool
64 default y
65
66config ARCH_DMA_ADDR_T_64BIT
67 def_bool y
68
69config NEED_DMA_MAP_STATE
70 def_bool y
71
72config NEED_SG_DMA_LENGTH
73 def_bool y
74
75config GENERIC_ISA_DMA
76 bool
77 default y
78
79config PGTABLE_LEVELS
80 int
81 default 3
82
83source "init/Kconfig"
84source "kernel/Kconfig.freezer"
85
86config AUDIT_ARCH
87 bool
88
89menu "System setup"
90
91choice
92 prompt "Alpha system type"
93 default ALPHA_GENERIC
94 ---help---
95 This is the system type of your hardware. A "generic" kernel will
96 run on any supported Alpha system. However, if you configure a
97 kernel for your specific system, it will be faster and smaller.
98
99 To find out what type of Alpha system you have, you may want to
100 check out the Linux/Alpha FAQ, accessible on the WWW from
101 <http://www.alphalinux.org/>. In summary:
102
103 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
104 Alpha-XL XL-233, XL-266
105 AlphaBook1 Alpha laptop
106 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
107 Cabriolet AlphaPC64, AlphaPCI64
108 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
109 EB164 EB164 21164 evaluation board
110 EB64+ EB64+ 21064 evaluation board
111 EB66 EB66 21066 evaluation board
112 EB66+ EB66+ 21066 evaluation board
113 Jensen DECpc 150, DEC 2000 models 300, 500
114 LX164 AlphaPC164-LX
115 Lynx AS 2100A
116 Miata Personal Workstation 433/500/600 a/au
117 Marvel AlphaServer ES47 / ES80 / GS1280
118 Mikasa AS 1000
119 Noname AXPpci33, UDB (Multia)
120 Noritake AS 1000A, AS 600A, AS 800
121 PC164 AlphaPC164
122 Rawhide AS 1200, AS 4000, AS 4100
123 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
124 SX164 AlphaPC164-SX
125 Sable AS 2000, AS 2100
126 Shark DS 20L
127 Takara Takara (OEM)
128 Titan AlphaServer ES45 / DS25 / DS15
129 Wildfire AlphaServer GS 40/80/160/320
130
131 If you don't know what to do, choose "generic".
132
133config ALPHA_GENERIC
134 bool "Generic"
135 depends on TTY
136 help
137 A generic kernel will run on all supported Alpha hardware.
138
139config ALPHA_ALCOR
140 bool "Alcor/Alpha-XLT"
141 help
142 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
143 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
144 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
145 controller (256-bit memory bus) and a PCI interface. It also does
146 all the work required to support an external Bcache and to maintain
147 memory coherence when a PCI device DMAs into (or out of) memory.
148
149config ALPHA_XL
150 bool "Alpha-XL"
151 help
152 XL-233 and XL-266-based Alpha systems.
153
154config ALPHA_BOOK1
155 bool "AlphaBook1"
156 help
157 Dec AlphaBook1/Burns Alpha-based laptops.
158
159config ALPHA_AVANTI_CH
160 bool "Avanti"
161
162config ALPHA_CABRIOLET
163 bool "Cabriolet"
164 help
165 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
166 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
167 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
168 Bcache SIMMs. Requires power supply with 3.3V output.
169
170config ALPHA_DP264
171 bool "DP264"
172 help
173 Various 21264 systems with the tsunami core logic chipset.
174 API Networks: 264DP, UP2000(+), CS20;
175 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
176
177config ALPHA_EB164
178 bool "EB164"
179 help
180 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
181 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
182 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
183 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
184 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
185 motherboard. Requires power supply with 3.3V output.
186
187config ALPHA_EB64P_CH
188 bool "EB64+"
189
190config ALPHA_EB66
191 bool "EB66"
192 help
193 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
194 identical to EB64+. Baby PC-AT size. Runs from standard PC power
195 supply. The EB66 schematic was published as a marketing poster
196 advertising the 21066 as "the first microprocessor in the world with
197 embedded PCI".
198
199config ALPHA_EB66P
200 bool "EB66+"
201 help
202 Later variant of the EB66 board.
203
204config ALPHA_EIGER
205 bool "Eiger"
206 help
207 Apparently an obscure OEM single-board computer based on the
208 Typhoon/Tsunami chipset family. Information on it is scanty.
209
210config ALPHA_JENSEN
211 bool "Jensen"
212 help
213 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
214 of the first-generation Alpha systems. A number of these systems
215 seem to be available on the second- hand market. The Jensen is a
216 floor-standing tower system which originally used a 150MHz 21064 It
217 used programmable logic to interface a 486 EISA I/O bridge to the
218 CPU.
219
220config ALPHA_LX164
221 bool "LX164"
222 help
223 A technical overview of this board is available at
224 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
225
226config ALPHA_LYNX
227 bool "Lynx"
228 help
229 AlphaServer 2100A-based systems.
230
231config ALPHA_MARVEL
232 bool "Marvel"
233 help
234 AlphaServer ES47 / ES80 / GS1280 based on EV7.
235
236config ALPHA_MIATA
237 bool "Miata"
238 help
239 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
240 or 600au).
241
242config ALPHA_MIKASA
243 bool "Mikasa"
244 help
245 AlphaServer 1000-based Alpha systems.
246
247config ALPHA_NAUTILUS
248 bool "Nautilus"
249 help
250 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
251
252config ALPHA_NONAME_CH
253 bool "Noname"
254
255config ALPHA_NORITAKE
256 bool "Noritake"
257 help
258 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
259 systems.
260
261config ALPHA_PC164
262 bool "PC164"
263
264config ALPHA_P2K
265 bool "Platform2000"
266
267config ALPHA_RAWHIDE
268 bool "Rawhide"
269 help
270 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
271 See HOWTO at
272 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
273
274config ALPHA_RUFFIAN
275 bool "Ruffian"
276 help
277 Samsung APC164UX. There is a page on known problems and workarounds
278 at <http://www.alphalinux.org/faq/FAQ-11.html>.
279
280config ALPHA_RX164
281 bool "RX164"
282
283config ALPHA_SX164
284 bool "SX164"
285
286config ALPHA_SABLE
287 bool "Sable"
288 help
289 Digital AlphaServer 2000 and 2100-based systems.
290
291config ALPHA_SHARK
292 bool "Shark"
293
294config ALPHA_TAKARA
295 bool "Takara"
296 help
297 Alpha 11164-based OEM single-board computer.
298
299config ALPHA_TITAN
300 bool "Titan"
301 help
302 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
303
304config ALPHA_WILDFIRE
305 bool "Wildfire"
306 help
307 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
308
309endchoice
310
311# clear all implied options (don't want default values for those):
312# Most of these machines have ISA slots; not exactly sure which don't,
313# and this doesn't activate hordes of code, so do it always.
314config ISA
315 bool
316 default y
317 help
318 Find out whether you have ISA slots on your motherboard. ISA is the
319 name of a bus system, i.e. the way the CPU talks to the other stuff
320 inside your box. Other bus systems are PCI, EISA, MicroChannel
321 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
322 newer boards don't support it. If you have ISA, say Y, otherwise N.
323
324config ISA_DMA_API
325 bool
326 default y
327
328config PCI
329 bool
330 depends on !ALPHA_JENSEN
331 select GENERIC_PCI_IOMAP
332 default y
333 help
334 Find out whether you have a PCI motherboard. PCI is the name of a
335 bus system, i.e. the way the CPU talks to the other stuff inside
336 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
337 VESA. If you have PCI, say Y, otherwise N.
338
339config PCI_DOMAINS
340 bool
341 default y
342
343config PCI_SYSCALL
344 def_bool PCI
345
346config IOMMU_HELPER
347 def_bool PCI
348
349config ALPHA_NONAME
350 bool
351 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
352 default y
353 help
354 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
355 UDB). This design was produced by Digital's Technical OEM (TOEM)
356 group. It uses the 21066 processor running at 166MHz or 233MHz. It
357 is a baby-AT size, and runs from a standard PC power supply. It has
358 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
359 2 versions, with either PS/2 or large DIN connectors for the
360 keyboard.
361
362config ALPHA_EV4
363 bool
364 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
365 default y if !ALPHA_LYNX
366
367config ALPHA_LCA
368 bool
369 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
370 default y
371
372config ALPHA_APECS
373 bool
374 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
375 default y
376
377config ALPHA_EB64P
378 bool
379 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
380 default y
381 help
382 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
383 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
384 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
385 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
386 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
387 Runs from standard PC power supply.
388
389config ALPHA_EV5
390 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
391 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
392
393config ALPHA_EV4
394 bool
395 default y if ALPHA_LYNX && !ALPHA_EV5
396
397config ALPHA_CIA
398 bool
399 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
400 default y
401
402config ALPHA_EV56
403 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
404 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
405
406config ALPHA_EV56
407 prompt "EV56 CPU (speed >= 333MHz)?"
408 depends on ALPHA_NORITAKE || ALPHA_PRIMO
409
410config ALPHA_EV56
411 prompt "EV56 CPU (speed >= 400MHz)?"
412 depends on ALPHA_RAWHIDE
413
414config ALPHA_PRIMO
415 bool "EV5 CPU daughtercard (model 5/xxx)?"
416 depends on ALPHA_NORITAKE || ALPHA_MIKASA
417 help
418 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
419
420config ALPHA_GAMMA
421 bool "EV5 CPU(s) (model 5/xxx)?"
422 depends on ALPHA_SABLE
423 help
424 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
425
426config ALPHA_GAMMA
427 bool
428 depends on ALPHA_LYNX
429 default y
430
431config ALPHA_T2
432 bool
433 depends on ALPHA_SABLE || ALPHA_LYNX
434 default y
435
436config ALPHA_PYXIS
437 bool
438 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
439 default y
440
441config ALPHA_EV6
442 bool
443 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
444 default y
445
446config ALPHA_TSUNAMI
447 bool
448 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
449 default y
450
451config ALPHA_EV67
452 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
453 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
454 help
455 Is this a machine based on the EV67 core? If in doubt, select N here
456 and the machine will be treated as an EV6.
457
458config ALPHA_MCPCIA
459 bool
460 depends on ALPHA_RAWHIDE
461 default y
462
463config ALPHA_POLARIS
464 bool
465 depends on ALPHA_RX164
466 default y
467
468config ALPHA_IRONGATE
469 bool
470 depends on ALPHA_NAUTILUS
471 default y
472
473config GENERIC_HWEIGHT
474 bool
475 default y if !ALPHA_EV67
476
477config ALPHA_AVANTI
478 bool
479 depends on ALPHA_XL || ALPHA_AVANTI_CH
480 default y
481 help
482 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
483 Alphas. Info at
484 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
485
486config ALPHA_BROKEN_IRQ_MASK
487 bool
488 depends on ALPHA_GENERIC || ALPHA_PC164
489 default y
490
491config VGA_HOSE
492 bool
493 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
494 default y
495 help
496 Support VGA on an arbitrary hose; needed for several platforms
497 which always have multiple hoses, and whose consoles support it.
498
499
500config ALPHA_QEMU
501 bool "Run under QEMU emulation"
502 depends on !ALPHA_GENERIC
503 ---help---
504 Assume the presence of special features supported by QEMU PALcode
505 that reduce the overhead of system emulation.
506
507 Generic kernels will auto-detect QEMU. But when building a
508 system-specific kernel, the assumption is that we want to
509 elimiate as many runtime tests as possible.
510
511 If unsure, say N.
512
513
514config ALPHA_SRM
515 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
516 depends on TTY
517 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
518 ---help---
519 There are two different types of booting firmware on Alphas: SRM,
520 which is command line driven, and ARC, which uses menus and arrow
521 keys. Details about the Linux/Alpha booting process are contained in
522 the Linux/Alpha FAQ, accessible on the WWW from
523 <http://www.alphalinux.org/>.
524
525 The usual way to load Linux on an Alpha machine is to use MILO
526 (a bootloader that lets you pass command line parameters to the
527 kernel just like lilo does for the x86 architecture) which can be
528 loaded either from ARC or can be installed directly as a permanent
529 firmware replacement from floppy (which requires changing a certain
530 jumper on the motherboard). If you want to do either of these, say N
531 here. If MILO doesn't work on your system (true for Jensen
532 motherboards), you can bypass it altogether and boot Linux directly
533 from an SRM console; say Y here in order to do that. Note that you
534 won't be able to boot from an IDE disk using SRM.
535
536 If unsure, say N.
537
538config EISA
539 bool
540 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
541 default y
542
543config ARCH_MAY_HAVE_PC_FDC
544 def_bool y
545
546config SMP
547 bool "Symmetric multi-processing support"
548 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
549 ---help---
550 This enables support for systems with more than one CPU. If you have
551 a system with only one CPU, say N. If you have a system with more
552 than one CPU, say Y.
553
554 If you say N here, the kernel will run on uni- and multiprocessor
555 machines, but will use only one CPU of a multiprocessor machine. If
556 you say Y here, the kernel will run on many, but not all,
557 uniprocessor machines. On a uniprocessor machine, the kernel
558 will run faster if you say N here.
559
560 See also the SMP-HOWTO available at
561 <http://www.tldp.org/docs.html#howto>.
562
563 If you don't know what to do here, say N.
564
565config HAVE_DEC_LOCK
566 bool
567 depends on SMP
568 default y
569
570config NR_CPUS
571 int "Maximum number of CPUs (2-32)"
572 range 2 32
573 depends on SMP
574 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
575 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
576 help
577 MARVEL support can handle a maximum of 32 CPUs, all the others
578 with working support have a maximum of 4 CPUs.
579
580config ARCH_DISCONTIGMEM_ENABLE
581 bool "Discontiguous Memory Support"
582 help
583 Say Y to support efficient handling of discontiguous physical memory,
584 for architectures which are either NUMA (Non-Uniform Memory Access)
585 or have huge holes in the physical address space for other reasons.
586 See <file:Documentation/vm/numa> for more.
587
588source "mm/Kconfig"
589
590config NUMA
591 bool "NUMA Support (EXPERIMENTAL)"
592 depends on DISCONTIGMEM && BROKEN
593 help
594 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
595 Access). This option is for configuring high-end multiprocessor
596 server machines. If in doubt, say N.
597
598config ALPHA_WTINT
599 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
600 default y if ALPHA_QEMU
601 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
602 default n if !ALPHA_SRM && !ALPHA_GENERIC
603 default y if SMP
604 ---help---
605 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
606 to sleep until the next interrupt. This may reduce the power
607 consumed, and the heat produced by the computer. However, it has
608 the side effect of making the cycle counter unreliable as a timing
609 device across the sleep.
610
611 For emulation under QEMU, definitely say Y here, as we have other
612 mechanisms for measuring time than the cycle counter.
613
614 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
615 MILO, sleep mode is not supported so you might as well say N here.
616
617 For SMP systems we cannot use the cycle counter for timing anyway,
618 so you might as well say Y here.
619
620 If unsure, say N.
621
622config NODES_SHIFT
623 int
624 default "7"
625 depends on NEED_MULTIPLE_NODES
626
627# LARGE_VMALLOC is racy, if you *really* need it then fix it first
628config ALPHA_LARGE_VMALLOC
629 bool
630 ---help---
631 Process creation and other aspects of virtual memory management can
632 be streamlined if we restrict the kernel to one PGD for all vmalloc
633 allocations. This equates to about 8GB.
634
635 Under normal circumstances, this is so far and above what is needed
636 as to be laughable. However, there are certain applications (such
637 as benchmark-grade in-kernel web serving) that can make use of as
638 much vmalloc space as is available.
639
640 Say N unless you know you need gobs and gobs of vmalloc space.
641
642config VERBOSE_MCHECK
643 bool "Verbose Machine Checks"
644
645config VERBOSE_MCHECK_ON
646 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
647 depends on VERBOSE_MCHECK
648 default 1
649 ---help---
650 This option allows the default printing mode to be set, and then
651 possibly overridden by a boot command argument.
652
653 For example, if one wanted the option of printing verbose
654 machine checks, but wanted the default to be as if verbose
655 machine check printing was turned off, then one would choose
656 the printing mode to be 0. Then, upon reboot, one could add
657 the boot command line "verbose_mcheck=1" to get the normal
658 verbose machine check printing, or "verbose_mcheck=2" to get
659 the maximum information available.
660
661 Take the default (1) unless you want more control or more info.
662
663choice
664 prompt "Timer interrupt frequency (HZ)?"
665 default HZ_128 if ALPHA_QEMU
666 default HZ_1200 if ALPHA_RAWHIDE
667 default HZ_1024
668 ---help---
669 The frequency at which timer interrupts occur. A high frequency
670 minimizes latency, whereas a low frequency minimizes overhead of
671 process accounting. The later effect is especially significant
672 when being run under QEMU.
673
674 Note that some Alpha hardware cannot change the interrupt frequency
675 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
676
677 config HZ_32
678 bool "32 Hz"
679 config HZ_64
680 bool "64 Hz"
681 config HZ_128
682 bool "128 Hz"
683 config HZ_256
684 bool "256 Hz"
685 config HZ_1024
686 bool "1024 Hz"
687 config HZ_1200
688 bool "1200 Hz"
689endchoice
690
691config HZ
692 int
693 default 32 if HZ_32
694 default 64 if HZ_64
695 default 128 if HZ_128
696 default 256 if HZ_256
697 default 1200 if HZ_1200
698 default 1024
699
700source "drivers/pci/Kconfig"
701source "drivers/eisa/Kconfig"
702
703source "drivers/pcmcia/Kconfig"
704
705config SRM_ENV
706 tristate "SRM environment through procfs"
707 depends on PROC_FS
708 ---help---
709 If you enable this option, a subdirectory inside /proc called
710 /proc/srm_environment will give you access to the all important
711 SRM environment variables (those which have a name) and also
712 to all others (by their internal number).
713
714 SRM is something like a BIOS for Alpha machines. There are some
715 other such BIOSes, like AlphaBIOS, which this driver cannot
716 support (hey, that's not SRM!).
717
718 Despite the fact that this driver doesn't work on all Alphas (but
719 only on those which have SRM as their firmware), it's save to
720 build it even if your particular machine doesn't know about SRM
721 (or if you intend to compile a generic kernel). It will simply
722 not create those subdirectory in /proc (and give you some warning,
723 of course).
724
725 This driver is also available as a module and will be called
726 srm_env then.
727
728source "fs/Kconfig.binfmt"
729
730endmenu
731
732source "net/Kconfig"
733
734source "drivers/Kconfig"
735
736source "fs/Kconfig"
737
738source "arch/alpha/Kconfig.debug"
739
740# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
741# but we also need it if VGA_HOSE is set
742config DUMMY_CONSOLE
743 bool
744 depends on VGA_HOSE
745 default y
746
747source "security/Kconfig"
748
749source "crypto/Kconfig"
750
751source "lib/Kconfig"
752
1# SPDX-License-Identifier: GPL-2.0
2config ALPHA
3 bool
4 default y
5 select ARCH_32BIT_USTAT_F_TINODE
6 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select ARCH_MIGHT_HAVE_PC_SERIO
8 select ARCH_NO_PREEMPT
9 select ARCH_NO_SG_CHAIN
10 select ARCH_USE_CMPXCHG_LOCKREF
11 select DMA_OPS if PCI
12 select FORCE_PCI if !ALPHA_JENSEN
13 select PCI_DOMAINS if PCI
14 select PCI_SYSCALL if PCI
15 select HAVE_AOUT
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
21 select VIRT_TO_BUS
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
28 select AUDIT_ARCH
29 select GENERIC_CPU_VULNERABILITIES
30 select GENERIC_SMP_IDLE_THREAD
31 select GENERIC_STRNCPY_FROM_USER
32 select GENERIC_STRNLEN_USER
33 select HAVE_ARCH_AUDITSYSCALL
34 select HAVE_MOD_ARCH_SPECIFIC
35 select MODULES_USE_ELF_RELA
36 select ODD_RT_SIGACTION
37 select OLD_SIGSUSPEND
38 select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
39 select MMU_GATHER_NO_RANGE
40 select SET_FS
41 select SPARSEMEM_EXTREME if SPARSEMEM
42 select ZONE_DMA
43 help
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/>.
48
49config 64BIT
50 def_bool y
51
52config MMU
53 bool
54 default y
55
56config ARCH_HAS_ILOG2_U32
57 bool
58 default n
59
60config ARCH_HAS_ILOG2_U64
61 bool
62 default n
63
64config GENERIC_CALIBRATE_DELAY
65 bool
66 default y
67
68config GENERIC_ISA_DMA
69 bool
70 default y
71
72config PGTABLE_LEVELS
73 int
74 default 3
75
76config AUDIT_ARCH
77 bool
78
79menu "System setup"
80
81choice
82 prompt "Alpha system type"
83 default ALPHA_GENERIC
84 help
85 This is the system type of your hardware. A "generic" kernel will
86 run on any supported Alpha system. However, if you configure a
87 kernel for your specific system, it will be faster and smaller.
88
89 To find out what type of Alpha system you have, you may want to
90 check out the Linux/Alpha FAQ, accessible on the WWW from
91 <http://www.alphalinux.org/>. In summary:
92
93 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
94 Alpha-XL XL-233, XL-266
95 AlphaBook1 Alpha laptop
96 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
97 Cabriolet AlphaPC64, AlphaPCI64
98 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
99 EB164 EB164 21164 evaluation board
100 EB64+ EB64+ 21064 evaluation board
101 EB66 EB66 21066 evaluation board
102 EB66+ EB66+ 21066 evaluation board
103 Jensen DECpc 150, DEC 2000 models 300, 500
104 LX164 AlphaPC164-LX
105 Lynx AS 2100A
106 Miata Personal Workstation 433/500/600 a/au
107 Marvel AlphaServer ES47 / ES80 / GS1280
108 Mikasa AS 1000
109 Noname AXPpci33, UDB (Multia)
110 Noritake AS 1000A, AS 600A, AS 800
111 PC164 AlphaPC164
112 Rawhide AS 1200, AS 4000, AS 4100
113 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
114 SX164 AlphaPC164-SX
115 Sable AS 2000, AS 2100
116 Shark DS 20L
117 Takara Takara (OEM)
118 Titan AlphaServer ES45 / DS25 / DS15
119 Wildfire AlphaServer GS 40/80/160/320
120
121 If you don't know what to do, choose "generic".
122
123config ALPHA_GENERIC
124 bool "Generic"
125 depends on TTY
126 select HAVE_EISA
127 help
128 A generic kernel will run on all supported Alpha hardware.
129
130config ALPHA_ALCOR
131 bool "Alcor/Alpha-XLT"
132 select HAVE_EISA
133 help
134 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
135 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
136 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
137 controller (256-bit memory bus) and a PCI interface. It also does
138 all the work required to support an external Bcache and to maintain
139 memory coherence when a PCI device DMAs into (or out of) memory.
140
141config ALPHA_XL
142 bool "Alpha-XL"
143 help
144 XL-233 and XL-266-based Alpha systems.
145
146config ALPHA_BOOK1
147 bool "AlphaBook1"
148 help
149 Dec AlphaBook1/Burns Alpha-based laptops.
150
151config ALPHA_AVANTI_CH
152 bool "Avanti"
153
154config ALPHA_CABRIOLET
155 bool "Cabriolet"
156 help
157 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
158 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
159 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
160 Bcache SIMMs. Requires power supply with 3.3V output.
161
162config ALPHA_DP264
163 bool "DP264"
164 help
165 Various 21264 systems with the tsunami core logic chipset.
166 API Networks: 264DP, UP2000(+), CS20;
167 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
168
169config ALPHA_EB164
170 bool "EB164"
171 help
172 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
173 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
174 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
175 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
176 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
177 motherboard. Requires power supply with 3.3V output.
178
179config ALPHA_EB64P_CH
180 bool "EB64+"
181
182config ALPHA_EB66
183 bool "EB66"
184 help
185 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
186 identical to EB64+. Baby PC-AT size. Runs from standard PC power
187 supply. The EB66 schematic was published as a marketing poster
188 advertising the 21066 as "the first microprocessor in the world with
189 embedded PCI".
190
191config ALPHA_EB66P
192 bool "EB66+"
193 help
194 Later variant of the EB66 board.
195
196config ALPHA_EIGER
197 bool "Eiger"
198 help
199 Apparently an obscure OEM single-board computer based on the
200 Typhoon/Tsunami chipset family. Information on it is scanty.
201
202config ALPHA_JENSEN
203 bool "Jensen"
204 depends on BROKEN
205 select HAVE_EISA
206 help
207 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
208 of the first-generation Alpha systems. A number of these systems
209 seem to be available on the second- hand market. The Jensen is a
210 floor-standing tower system which originally used a 150MHz 21064 It
211 used programmable logic to interface a 486 EISA I/O bridge to the
212 CPU.
213
214config ALPHA_LX164
215 bool "LX164"
216 help
217 A technical overview of this board is available at
218 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
219
220config ALPHA_LYNX
221 bool "Lynx"
222 select HAVE_EISA
223 help
224 AlphaServer 2100A-based systems.
225
226config ALPHA_MARVEL
227 bool "Marvel"
228 help
229 AlphaServer ES47 / ES80 / GS1280 based on EV7.
230
231config ALPHA_MIATA
232 bool "Miata"
233 select HAVE_EISA
234 help
235 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
236 or 600au).
237
238config ALPHA_MIKASA
239 bool "Mikasa"
240 help
241 AlphaServer 1000-based Alpha systems.
242
243config ALPHA_NAUTILUS
244 bool "Nautilus"
245 help
246 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
247
248config ALPHA_NONAME_CH
249 bool "Noname"
250
251config ALPHA_NORITAKE
252 bool "Noritake"
253 select HAVE_EISA
254 help
255 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
256 systems.
257
258config ALPHA_PC164
259 bool "PC164"
260
261config ALPHA_P2K
262 bool "Platform2000"
263
264config ALPHA_RAWHIDE
265 bool "Rawhide"
266 select HAVE_EISA
267 help
268 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
269 See HOWTO at
270 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
271
272config ALPHA_RUFFIAN
273 bool "Ruffian"
274 help
275 Samsung APC164UX. There is a page on known problems and workarounds
276 at <http://www.alphalinux.org/faq/FAQ-11.html>.
277
278config ALPHA_RX164
279 bool "RX164"
280
281config ALPHA_SX164
282 bool "SX164"
283
284config ALPHA_SABLE
285 bool "Sable"
286 select HAVE_EISA
287 help
288 Digital AlphaServer 2000 and 2100-based systems.
289
290config ALPHA_SHARK
291 bool "Shark"
292
293config ALPHA_TAKARA
294 bool "Takara"
295 help
296 Alpha 11164-based OEM single-board computer.
297
298config ALPHA_TITAN
299 bool "Titan"
300 help
301 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
302
303config ALPHA_WILDFIRE
304 bool "Wildfire"
305 help
306 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
307
308endchoice
309
310# clear all implied options (don't want default values for those):
311# Most of these machines have ISA slots; not exactly sure which don't,
312# and this doesn't activate hordes of code, so do it always.
313config ISA
314 bool
315 default y
316 help
317 Find out whether you have ISA slots on your motherboard. ISA is the
318 name of a bus system, i.e. the way the CPU talks to the other stuff
319 inside your box. Other bus systems are PCI, EISA, MicroChannel
320 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
321 newer boards don't support it. If you have ISA, say Y, otherwise N.
322
323config ISA_DMA_API
324 bool
325 default y
326
327config ALPHA_NONAME
328 bool
329 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
330 default y
331 help
332 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
333 UDB). This design was produced by Digital's Technical OEM (TOEM)
334 group. It uses the 21066 processor running at 166MHz or 233MHz. It
335 is a baby-AT size, and runs from a standard PC power supply. It has
336 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
337 2 versions, with either PS/2 or large DIN connectors for the
338 keyboard.
339
340config ALPHA_EV4
341 bool
342 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
343 default y if !ALPHA_LYNX
344
345config ALPHA_LCA
346 bool
347 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
348 default y
349
350config ALPHA_APECS
351 bool
352 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
353 default y
354
355config ALPHA_EB64P
356 bool
357 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
358 default y
359 help
360 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
361 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
362 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
363 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
364 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
365 Runs from standard PC power supply.
366
367config ALPHA_EV5
368 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
369 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
370
371config ALPHA_EV4
372 bool
373 default y if ALPHA_LYNX && !ALPHA_EV5
374
375config ALPHA_CIA
376 bool
377 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
378 default y
379
380config ALPHA_EV56
381 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
382 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
383
384config ALPHA_EV56
385 prompt "EV56 CPU (speed >= 333MHz)?"
386 depends on ALPHA_NORITAKE || ALPHA_PRIMO
387
388config ALPHA_EV56
389 prompt "EV56 CPU (speed >= 400MHz)?"
390 depends on ALPHA_RAWHIDE
391
392config ALPHA_PRIMO
393 bool "EV5 CPU daughtercard (model 5/xxx)?"
394 depends on ALPHA_NORITAKE || ALPHA_MIKASA
395 help
396 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
397
398config ALPHA_GAMMA
399 bool "EV5 CPU(s) (model 5/xxx)?"
400 depends on ALPHA_SABLE
401 help
402 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
403
404config ALPHA_GAMMA
405 bool
406 depends on ALPHA_LYNX
407 default y
408
409config ALPHA_T2
410 bool
411 depends on ALPHA_SABLE || ALPHA_LYNX
412 default y
413
414config ALPHA_PYXIS
415 bool
416 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
417 default y
418
419config ALPHA_EV6
420 bool
421 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
422 default y
423
424config ALPHA_TSUNAMI
425 bool
426 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
427 default y
428
429config ALPHA_EV67
430 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
431 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
432 help
433 Is this a machine based on the EV67 core? If in doubt, select N here
434 and the machine will be treated as an EV6.
435
436config ALPHA_MCPCIA
437 bool
438 depends on ALPHA_RAWHIDE
439 default y
440
441config ALPHA_POLARIS
442 bool
443 depends on ALPHA_RX164
444 default y
445
446config ALPHA_IRONGATE
447 bool
448 depends on ALPHA_NAUTILUS
449 default y
450
451config GENERIC_HWEIGHT
452 bool
453 default y if !ALPHA_EV67
454
455config ALPHA_AVANTI
456 bool
457 depends on ALPHA_XL || ALPHA_AVANTI_CH
458 default y
459 help
460 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
461 Alphas. Info at
462 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
463
464config ALPHA_BROKEN_IRQ_MASK
465 bool
466 depends on ALPHA_GENERIC || ALPHA_PC164
467 default y
468
469config VGA_HOSE
470 bool
471 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
472 default y
473 help
474 Support VGA on an arbitrary hose; needed for several platforms
475 which always have multiple hoses, and whose consoles support it.
476
477
478config ALPHA_QEMU
479 bool "Run under QEMU emulation"
480 depends on !ALPHA_GENERIC
481 help
482 Assume the presence of special features supported by QEMU PALcode
483 that reduce the overhead of system emulation.
484
485 Generic kernels will auto-detect QEMU. But when building a
486 system-specific kernel, the assumption is that we want to
487 eliminate as many runtime tests as possible.
488
489 If unsure, say N.
490
491
492config ALPHA_SRM
493 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
494 depends on TTY
495 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
496 help
497 There are two different types of booting firmware on Alphas: SRM,
498 which is command line driven, and ARC, which uses menus and arrow
499 keys. Details about the Linux/Alpha booting process are contained in
500 the Linux/Alpha FAQ, accessible on the WWW from
501 <http://www.alphalinux.org/>.
502
503 The usual way to load Linux on an Alpha machine is to use MILO
504 (a bootloader that lets you pass command line parameters to the
505 kernel just like lilo does for the x86 architecture) which can be
506 loaded either from ARC or can be installed directly as a permanent
507 firmware replacement from floppy (which requires changing a certain
508 jumper on the motherboard). If you want to do either of these, say N
509 here. If MILO doesn't work on your system (true for Jensen
510 motherboards), you can bypass it altogether and boot Linux directly
511 from an SRM console; say Y here in order to do that. Note that you
512 won't be able to boot from an IDE disk using SRM.
513
514 If unsure, say N.
515
516config ARCH_MAY_HAVE_PC_FDC
517 def_bool y
518
519config SMP
520 bool "Symmetric multi-processing support"
521 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
522 help
523 This enables support for systems with more than one CPU. If you have
524 a system with only one CPU, say N. If you have a system with more
525 than one CPU, say Y.
526
527 If you say N here, the kernel will run on uni- and multiprocessor
528 machines, but will use only one CPU of a multiprocessor machine. If
529 you say Y here, the kernel will run on many, but not all,
530 uniprocessor machines. On a uniprocessor machine, the kernel
531 will run faster if you say N here.
532
533 See also the SMP-HOWTO available at
534 <https://www.tldp.org/docs.html#howto>.
535
536 If you don't know what to do here, say N.
537
538config NR_CPUS
539 int "Maximum number of CPUs (2-32)"
540 range 2 32
541 depends on SMP
542 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
543 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
544 help
545 MARVEL support can handle a maximum of 32 CPUs, all the others
546 with working support have a maximum of 4 CPUs.
547
548config ARCH_SPARSEMEM_ENABLE
549 bool "Sparse Memory Support"
550 help
551 Say Y to support efficient handling of discontiguous physical memory,
552 for systems that have huge holes in the physical address space.
553
554config ALPHA_WTINT
555 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
556 default y if ALPHA_QEMU
557 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
558 default n if !ALPHA_SRM && !ALPHA_GENERIC
559 default y if SMP
560 help
561 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
562 to sleep until the next interrupt. This may reduce the power
563 consumed, and the heat produced by the computer. However, it has
564 the side effect of making the cycle counter unreliable as a timing
565 device across the sleep.
566
567 For emulation under QEMU, definitely say Y here, as we have other
568 mechanisms for measuring time than the cycle counter.
569
570 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
571 MILO, sleep mode is not supported so you might as well say N here.
572
573 For SMP systems we cannot use the cycle counter for timing anyway,
574 so you might as well say Y here.
575
576 If unsure, say N.
577
578# LARGE_VMALLOC is racy, if you *really* need it then fix it first
579config ALPHA_LARGE_VMALLOC
580 bool
581 help
582 Process creation and other aspects of virtual memory management can
583 be streamlined if we restrict the kernel to one PGD for all vmalloc
584 allocations. This equates to about 8GB.
585
586 Under normal circumstances, this is so far and above what is needed
587 as to be laughable. However, there are certain applications (such
588 as benchmark-grade in-kernel web serving) that can make use of as
589 much vmalloc space as is available.
590
591 Say N unless you know you need gobs and gobs of vmalloc space.
592
593config VERBOSE_MCHECK
594 bool "Verbose Machine Checks"
595
596config VERBOSE_MCHECK_ON
597 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
598 depends on VERBOSE_MCHECK
599 default 1
600 help
601 This option allows the default printing mode to be set, and then
602 possibly overridden by a boot command argument.
603
604 For example, if one wanted the option of printing verbose
605 machine checks, but wanted the default to be as if verbose
606 machine check printing was turned off, then one would choose
607 the printing mode to be 0. Then, upon reboot, one could add
608 the boot command line "verbose_mcheck=1" to get the normal
609 verbose machine check printing, or "verbose_mcheck=2" to get
610 the maximum information available.
611
612 Take the default (1) unless you want more control or more info.
613
614choice
615 prompt "Timer interrupt frequency (HZ)?"
616 default HZ_128 if ALPHA_QEMU
617 default HZ_1200 if ALPHA_RAWHIDE
618 default HZ_1024
619 help
620 The frequency at which timer interrupts occur. A high frequency
621 minimizes latency, whereas a low frequency minimizes overhead of
622 process accounting. The later effect is especially significant
623 when being run under QEMU.
624
625 Note that some Alpha hardware cannot change the interrupt frequency
626 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
627
628 config HZ_32
629 bool "32 Hz"
630 config HZ_64
631 bool "64 Hz"
632 config HZ_128
633 bool "128 Hz"
634 config HZ_256
635 bool "256 Hz"
636 config HZ_1024
637 bool "1024 Hz"
638 config HZ_1200
639 bool "1200 Hz"
640endchoice
641
642config HZ
643 int
644 default 32 if HZ_32
645 default 64 if HZ_64
646 default 128 if HZ_128
647 default 256 if HZ_256
648 default 1200 if HZ_1200
649 default 1024
650
651config SRM_ENV
652 tristate "SRM environment through procfs"
653 depends on PROC_FS
654 help
655 If you enable this option, a subdirectory inside /proc called
656 /proc/srm_environment will give you access to the all important
657 SRM environment variables (those which have a name) and also
658 to all others (by their internal number).
659
660 SRM is something like a BIOS for Alpha machines. There are some
661 other such BIOSes, like AlphaBIOS, which this driver cannot
662 support (hey, that's not SRM!).
663
664 Despite the fact that this driver doesn't work on all Alphas (but
665 only on those which have SRM as their firmware), it's save to
666 build it even if your particular machine doesn't know about SRM
667 (or if you intend to compile a generic kernel). It will simply
668 not create those subdirectory in /proc (and give you some warning,
669 of course).
670
671 This driver is also available as a module and will be called
672 srm_env then.
673
674endmenu
675
676# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
677# but we also need it if VGA_HOSE is set
678config DUMMY_CONSOLE
679 bool
680 depends on VGA_HOSE
681 default y