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