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