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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_HAS_CURRENT_STACK_POINTER
7 select ARCH_MIGHT_HAVE_PC_PARPORT
8 select ARCH_MIGHT_HAVE_PC_SERIO
9 select ARCH_NO_PREEMPT
10 select ARCH_NO_SG_CHAIN
11 select ARCH_USE_CMPXCHG_LOCKREF
12 select DMA_OPS if PCI
13 select FORCE_PCI if !ALPHA_JENSEN
14 select PCI_DOMAINS if PCI
15 select PCI_SYSCALL if PCI
16 select HAVE_ASM_MODVERSIONS
17 select HAVE_PAGE_SIZE_8KB
18 select HAVE_PCSPKR_PLATFORM
19 select HAVE_PERF_EVENTS
20 select NEED_DMA_MAP_STATE
21 select NEED_SG_DMA_LENGTH
22 select GENERIC_IRQ_PROBE
23 select GENERIC_PCI_IOMAP
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 HAS_IOPORT
32 select HAVE_ARCH_AUDITSYSCALL
33 select HAVE_MOD_ARCH_SPECIFIC
34 select LOCK_MM_AND_FIND_VMA
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 SPARSEMEM_EXTREME if SPARSEMEM
41 select ZONE_DMA
42 help
43 The Alpha is a 64-bit general-purpose processor designed and
44 marketed by the Digital Equipment Corporation of blessed memory,
45 now Hewlett-Packard. The Alpha Linux project has a home page at
46 <http://www.alphalinux.org/>.
47
48config 64BIT
49 def_bool y
50
51config MMU
52 bool
53 default y
54
55config ARCH_HAS_ILOG2_U32
56 bool
57 default n
58
59config ARCH_HAS_ILOG2_U64
60 bool
61 default n
62
63config GENERIC_CALIBRATE_DELAY
64 bool
65 default y
66
67config GENERIC_ISA_DMA
68 bool
69 default y
70
71config PGTABLE_LEVELS
72 int
73 default 3
74
75config AUDIT_ARCH
76 bool
77
78menu "System setup"
79
80choice
81 prompt "Alpha system type"
82 default ALPHA_GENERIC
83 help
84 This is the system type of your hardware. A "generic" kernel will
85 run on any supported Alpha system. However, if you configure a
86 kernel for your specific system, it will be faster and smaller.
87
88 To find out what type of Alpha system you have, you may want to
89 check out the Linux/Alpha FAQ, accessible on the WWW from
90 <http://www.alphalinux.org/>. In summary:
91
92 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
93 Alpha-XL XL-233, XL-266
94 AlphaBook1 Alpha laptop
95 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
96 Cabriolet AlphaPC64, AlphaPCI64
97 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
98 EB164 EB164 21164 evaluation board
99 EB64+ EB64+ 21064 evaluation board
100 EB66 EB66 21066 evaluation board
101 EB66+ EB66+ 21066 evaluation board
102 Jensen DECpc 150, DEC 2000 models 300, 500
103 LX164 AlphaPC164-LX
104 Lynx AS 2100A
105 Miata Personal Workstation 433/500/600 a/au
106 Marvel AlphaServer ES47 / ES80 / GS1280
107 Mikasa AS 1000
108 Noname AXPpci33, UDB (Multia)
109 Noritake AS 1000A, AS 600A, AS 800
110 PC164 AlphaPC164
111 Rawhide AS 1200, AS 4000, AS 4100
112 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
113 SX164 AlphaPC164-SX
114 Sable AS 2000, AS 2100
115 Shark DS 20L
116 Takara Takara (OEM)
117 Titan AlphaServer ES45 / DS25 / DS15
118 Wildfire AlphaServer GS 40/80/160/320
119
120 If you don't know what to do, choose "generic".
121
122config ALPHA_GENERIC
123 bool "Generic"
124 depends on TTY
125 select HAVE_EISA
126 help
127 A generic kernel will run on all supported Alpha hardware.
128
129config ALPHA_ALCOR
130 bool "Alcor/Alpha-XLT"
131 select HAVE_EISA
132 help
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.
139
140config ALPHA_XL
141 bool "Alpha-XL"
142 help
143 XL-233 and XL-266-based Alpha systems.
144
145config ALPHA_BOOK1
146 bool "AlphaBook1"
147 help
148 Dec AlphaBook1/Burns Alpha-based laptops.
149
150config ALPHA_AVANTI_CH
151 bool "Avanti"
152
153config ALPHA_CABRIOLET
154 bool "Cabriolet"
155 help
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.
160
161config ALPHA_DP264
162 bool "DP264"
163 help
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.
167
168config ALPHA_EB164
169 bool "EB164"
170 help
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.
177
178config ALPHA_EB64P_CH
179 bool "EB64+"
180
181config ALPHA_EB66
182 bool "EB66"
183 help
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
188 embedded PCI".
189
190config ALPHA_EB66P
191 bool "EB66+"
192 help
193 Later variant of the EB66 board.
194
195config ALPHA_EIGER
196 bool "Eiger"
197 help
198 Apparently an obscure OEM single-board computer based on the
199 Typhoon/Tsunami chipset family. Information on it is scanty.
200
201config ALPHA_JENSEN
202 bool "Jensen"
203 select HAVE_EISA
204 help
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
210 CPU.
211
212config ALPHA_LX164
213 bool "LX164"
214 help
215 A technical overview of this board is available at
216 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
217
218config ALPHA_LYNX
219 bool "Lynx"
220 select HAVE_EISA
221 help
222 AlphaServer 2100A-based systems.
223
224config ALPHA_MARVEL
225 bool "Marvel"
226 help
227 AlphaServer ES47 / ES80 / GS1280 based on EV7.
228
229config ALPHA_MIATA
230 bool "Miata"
231 select HAVE_EISA
232 help
233 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
234 or 600au).
235
236config ALPHA_MIKASA
237 bool "Mikasa"
238 help
239 AlphaServer 1000-based Alpha systems.
240
241config ALPHA_NAUTILUS
242 bool "Nautilus"
243 help
244 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
245
246config ALPHA_NONAME_CH
247 bool "Noname"
248
249config ALPHA_NORITAKE
250 bool "Noritake"
251 select HAVE_EISA
252 help
253 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
254 systems.
255
256config ALPHA_PC164
257 bool "PC164"
258
259config ALPHA_P2K
260 bool "Platform2000"
261
262config ALPHA_RAWHIDE
263 bool "Rawhide"
264 select HAVE_EISA
265 help
266 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
267 See HOWTO at
268 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
269
270config ALPHA_RUFFIAN
271 bool "Ruffian"
272 help
273 Samsung APC164UX. There is a page on known problems and workarounds
274 at <http://www.alphalinux.org/faq/FAQ-11.html>.
275
276config ALPHA_RX164
277 bool "RX164"
278
279config ALPHA_SX164
280 bool "SX164"
281
282config ALPHA_SABLE
283 bool "Sable"
284 select HAVE_EISA
285 help
286 Digital AlphaServer 2000 and 2100-based systems.
287
288config ALPHA_SHARK
289 bool "Shark"
290
291config ALPHA_TAKARA
292 bool "Takara"
293 help
294 Alpha 11164-based OEM single-board computer.
295
296config ALPHA_TITAN
297 bool "Titan"
298 help
299 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
300
301config ALPHA_WILDFIRE
302 bool "Wildfire"
303 help
304 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
305
306endchoice
307
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.
311config ISA
312 bool
313 default y
314 help
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.
320
321config ISA_DMA_API
322 bool
323 default y
324
325config ALPHA_NONAME
326 bool
327 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
328 default y
329 help
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
336 keyboard.
337
338config ALPHA_EV4
339 bool
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
342 default y if !ALPHA_EV5
343
344config ALPHA_LCA
345 bool
346 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
347 default y
348
349config ALPHA_APECS
350 bool
351 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
352 default y
353
354config ALPHA_EB64P
355 bool
356 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
357 default y
358 help
359 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
360 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
361 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
362 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
363 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
364 Runs from standard PC power supply.
365
366config ALPHA_EV5
367 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
368 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
369
370config ALPHA_CIA
371 bool
372 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
373 default y
374
375config ALPHA_EV56
376 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
377 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
378
379config ALPHA_EV56
380 prompt "EV56 CPU (speed >= 333MHz)?"
381 depends on ALPHA_NORITAKE || ALPHA_PRIMO
382
383config ALPHA_EV56
384 prompt "EV56 CPU (speed >= 400MHz)?"
385 depends on ALPHA_RAWHIDE
386
387config ALPHA_PRIMO
388 bool "EV5 CPU daughtercard (model 5/xxx)?"
389 depends on ALPHA_NORITAKE || ALPHA_MIKASA
390 help
391 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
392
393config ALPHA_GAMMA
394 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_SABLE
395 depends on ALPHA_SABLE || ALPHA_LYNX
396 default ALPHA_LYNX
397 help
398 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
399
400config ALPHA_T2
401 bool
402 depends on ALPHA_SABLE || ALPHA_LYNX
403 default y
404
405config ALPHA_PYXIS
406 bool
407 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
408 default y
409
410config ALPHA_EV6
411 bool
412 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
413 default y
414
415config ALPHA_TSUNAMI
416 bool
417 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
418 default y
419
420config ALPHA_EV67
421 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
422 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
423 help
424 Is this a machine based on the EV67 core? If in doubt, select N here
425 and the machine will be treated as an EV6.
426
427config ALPHA_MCPCIA
428 bool
429 depends on ALPHA_RAWHIDE
430 default y
431
432config ALPHA_POLARIS
433 bool
434 depends on ALPHA_RX164
435 default y
436
437config ALPHA_IRONGATE
438 bool
439 depends on ALPHA_NAUTILUS
440 default y
441
442config GENERIC_HWEIGHT
443 bool
444 default y if !ALPHA_EV67
445
446config ALPHA_AVANTI
447 bool
448 depends on ALPHA_XL || ALPHA_AVANTI_CH
449 default y
450 help
451 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
452 Alphas. Info at
453 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
454
455config ALPHA_BROKEN_IRQ_MASK
456 bool
457 depends on ALPHA_GENERIC || ALPHA_PC164
458 default y
459
460config VGA_HOSE
461 bool
462 depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
463 default y
464 help
465 Support VGA on an arbitrary hose; needed for several platforms
466 which always have multiple hoses, and whose consoles support it.
467
468
469config ALPHA_QEMU
470 bool "Run under QEMU emulation"
471 depends on !ALPHA_GENERIC
472 help
473 Assume the presence of special features supported by QEMU PALcode
474 that reduce the overhead of system emulation.
475
476 Generic kernels will auto-detect QEMU. But when building a
477 system-specific kernel, the assumption is that we want to
478 eliminate as many runtime tests as possible.
479
480 If unsure, say N.
481
482
483config ALPHA_SRM
484 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
485 depends on TTY
486 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
487 help
488 There are two different types of booting firmware on Alphas: SRM,
489 which is command line driven, and ARC, which uses menus and arrow
490 keys. Details about the Linux/Alpha booting process are contained in
491 the Linux/Alpha FAQ, accessible on the WWW from
492 <http://www.alphalinux.org/>.
493
494 The usual way to load Linux on an Alpha machine is to use MILO
495 (a bootloader that lets you pass command line parameters to the
496 kernel just like lilo does for the x86 architecture) which can be
497 loaded either from ARC or can be installed directly as a permanent
498 firmware replacement from floppy (which requires changing a certain
499 jumper on the motherboard). If you want to do either of these, say N
500 here. If MILO doesn't work on your system (true for Jensen
501 motherboards), you can bypass it altogether and boot Linux directly
502 from an SRM console; say Y here in order to do that. Note that you
503 won't be able to boot from an IDE disk using SRM.
504
505 If unsure, say N.
506
507config ARCH_MAY_HAVE_PC_FDC
508 def_bool y
509
510config SMP
511 bool "Symmetric multi-processing support"
512 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
513 help
514 This enables support for systems with more than one CPU. If you have
515 a system with only one CPU, say N. If you have a system with more
516 than one CPU, say Y.
517
518 If you say N here, the kernel will run on uni- and multiprocessor
519 machines, but will use only one CPU of a multiprocessor machine. If
520 you say Y here, the kernel will run on many, but not all,
521 uniprocessor machines. On a uniprocessor machine, the kernel
522 will run faster if you say N here.
523
524 See also the SMP-HOWTO available at
525 <https://www.tldp.org/docs.html#howto>.
526
527 If you don't know what to do here, say N.
528
529config NR_CPUS
530 int "Maximum number of CPUs (2-32)"
531 range 2 32
532 depends on SMP
533 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
534 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
535 help
536 MARVEL support can handle a maximum of 32 CPUs, all the others
537 with working support have a maximum of 4 CPUs.
538
539config ARCH_SPARSEMEM_ENABLE
540 bool "Sparse Memory Support"
541 help
542 Say Y to support efficient handling of discontiguous physical memory,
543 for systems that have huge holes in the physical address space.
544
545config ALPHA_WTINT
546 bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
547 default y if ALPHA_QEMU
548 default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
549 default n if !ALPHA_SRM && !ALPHA_GENERIC
550 default y if SMP
551 help
552 The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
553 to sleep until the next interrupt. This may reduce the power
554 consumed, and the heat produced by the computer. However, it has
555 the side effect of making the cycle counter unreliable as a timing
556 device across the sleep.
557
558 For emulation under QEMU, definitely say Y here, as we have other
559 mechanisms for measuring time than the cycle counter.
560
561 For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
562 MILO, sleep mode is not supported so you might as well say N here.
563
564 For SMP systems we cannot use the cycle counter for timing anyway,
565 so you might as well say Y here.
566
567 If unsure, say N.
568
569# LARGE_VMALLOC is racy, if you *really* need it then fix it first
570config ALPHA_LARGE_VMALLOC
571 bool
572 help
573 Process creation and other aspects of virtual memory management can
574 be streamlined if we restrict the kernel to one PGD for all vmalloc
575 allocations. This equates to about 8GB.
576
577 Under normal circumstances, this is so far and above what is needed
578 as to be laughable. However, there are certain applications (such
579 as benchmark-grade in-kernel web serving) that can make use of as
580 much vmalloc space as is available.
581
582 Say N unless you know you need gobs and gobs of vmalloc space.
583
584config VERBOSE_MCHECK
585 bool "Verbose Machine Checks"
586
587config VERBOSE_MCHECK_ON
588 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
589 depends on VERBOSE_MCHECK
590 default 1
591 help
592 This option allows the default printing mode to be set, and then
593 possibly overridden by a boot command argument.
594
595 For example, if one wanted the option of printing verbose
596 machine checks, but wanted the default to be as if verbose
597 machine check printing was turned off, then one would choose
598 the printing mode to be 0. Then, upon reboot, one could add
599 the boot command line "verbose_mcheck=1" to get the normal
600 verbose machine check printing, or "verbose_mcheck=2" to get
601 the maximum information available.
602
603 Take the default (1) unless you want more control or more info.
604
605choice
606 prompt "Timer interrupt frequency (HZ)?"
607 default HZ_128 if ALPHA_QEMU
608 default HZ_1200 if ALPHA_RAWHIDE
609 default HZ_1024
610 help
611 The frequency at which timer interrupts occur. A high frequency
612 minimizes latency, whereas a low frequency minimizes overhead of
613 process accounting. The later effect is especially significant
614 when being run under QEMU.
615
616 Note that some Alpha hardware cannot change the interrupt frequency
617 of the timer. If unsure, say 1024 (or 1200 for Rawhide).
618
619 config HZ_32
620 bool "32 Hz"
621 config HZ_64
622 bool "64 Hz"
623 config HZ_128
624 bool "128 Hz"
625 config HZ_256
626 bool "256 Hz"
627 config HZ_1024
628 bool "1024 Hz"
629 config HZ_1200
630 bool "1200 Hz"
631endchoice
632
633config HZ
634 int
635 default 32 if HZ_32
636 default 64 if HZ_64
637 default 128 if HZ_128
638 default 256 if HZ_256
639 default 1200 if HZ_1200
640 default 1024
641
642config SRM_ENV
643 tristate "SRM environment through procfs"
644 depends on PROC_FS
645 help
646 If you enable this option, a subdirectory inside /proc called
647 /proc/srm_environment will give you access to the all important
648 SRM environment variables (those which have a name) and also
649 to all others (by their internal number).
650
651 SRM is something like a BIOS for Alpha machines. There are some
652 other such BIOSes, like AlphaBIOS, which this driver cannot
653 support (hey, that's not SRM!).
654
655 Despite the fact that this driver doesn't work on all Alphas (but
656 only on those which have SRM as their firmware), it's save to
657 build it even if your particular machine doesn't know about SRM
658 (or if you intend to compile a generic kernel). It will simply
659 not create those subdirectory in /proc (and give you some warning,
660 of course).
661
662 This driver is also available as a module and will be called
663 srm_env then.
664
665endmenu
666
667# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
668# but we also need it if VGA_HOSE is set
669config DUMMY_CONSOLE
670 bool
671 depends on VGA_HOSE
672 default y