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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config ALPHA
2 bool
3 default y
David Woodhousee17c6d52008-06-17 12:19:34 +01004 select HAVE_AOUT
Sam Ravnborgec7748b2008-02-09 10:46:40 +01005 select HAVE_IDE
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -05006 select HAVE_OPROFILE
Ivan Kokshayskye5d9a902009-01-29 14:25:18 -08007 select HAVE_SYSCALL_WRAPPERS
Peter Zijlstrae360adb2010-10-14 14:01:34 +08008 select HAVE_IRQ_WORK
Ralf Baechle8761f1a2011-06-01 19:05:09 +01009 select HAVE_PCSPKR_PLATFORM
Michael Creea582e6f2009-12-08 14:27:01 -050010 select HAVE_PERF_EVENTS
FUJITA Tomonoric186cac2010-03-10 15:23:37 -080011 select HAVE_DMA_ATTRS
Thomas Gleixnere27ec642011-01-19 20:27:11 +010012 select HAVE_GENERIC_HARDIRQS
13 select GENERIC_IRQ_PROBE
14 select AUTO_IRQ_AFFINITY if SMP
Thomas Gleixnera6e120e2011-03-25 22:20:51 +010015 select GENERIC_IRQ_SHOW
Mark Brown81ee42b2011-05-24 17:12:57 -070016 select ARCH_WANT_OPTIONAL_GPIOLIB
Huang Yingdf013ff2011-07-13 13:14:22 +080017 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 help
19 The Alpha is a 64-bit general-purpose processor designed and
20 marketed by the Digital Equipment Corporation of blessed memory,
21 now Hewlett-Packard. The Alpha Linux project has a home page at
22 <http://www.alphalinux.org/>.
23
24config 64BIT
25 def_bool y
26
27config MMU
28 bool
29 default y
30
Linus Torvalds1da177e2005-04-16 15:20:36 -070031config RWSEM_GENERIC_SPINLOCK
32 bool
33
34config RWSEM_XCHGADD_ALGORITHM
35 bool
36 default y
37
David Howellsf0d1b0b2006-12-08 02:37:49 -080038config ARCH_HAS_ILOG2_U32
39 bool
40 default n
41
42config ARCH_HAS_ILOG2_U64
43 bool
44 default n
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046config GENERIC_CALIBRATE_DELAY
47 bool
48 default y
49
John Stultz1e871be2010-03-03 19:57:16 -080050config GENERIC_CMOS_UPDATE
51 def_bool y
52
Mark Brown81ee42b2011-05-24 17:12:57 -070053config GENERIC_GPIO
54 def_bool y
55
Christoph Lameter5ac6da62007-02-10 01:43:14 -080056config ZONE_DMA
57 bool
58 default y
59
FUJITA Tomonori947272d2010-10-26 14:22:15 -070060config ARCH_DMA_ADDR_T_64BIT
61 def_bool y
62
FUJITA Tomonori08d925b2010-03-10 15:23:23 -080063config NEED_DMA_MAP_STATE
64 def_bool y
65
FUJITA Tomonori48c7cf42010-05-26 14:44:34 -070066config NEED_SG_DMA_LENGTH
67 def_bool y
68
Linus Torvalds1da177e2005-04-16 15:20:36 -070069config GENERIC_ISA_DMA
70 bool
71 default y
72
73config GENERIC_IOMAP
74 bool
75 default n
76
77source "init/Kconfig"
Matt Helsleydc52ddc2008-10-18 20:27:21 -070078source "kernel/Kconfig.freezer"
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
80
81menu "System setup"
82
83choice
84 prompt "Alpha system type"
85 default ALPHA_GENERIC
86 ---help---
87 This is the system type of your hardware. A "generic" kernel will
88 run on any supported Alpha system. However, if you configure a
89 kernel for your specific system, it will be faster and smaller.
90
91 To find out what type of Alpha system you have, you may want to
92 check out the Linux/Alpha FAQ, accessible on the WWW from
93 <http://www.alphalinux.org/>. In summary:
94
Jay Estabrookd7083172007-06-01 00:47:05 -070095 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 Alpha-XL XL-233, XL-266
97 AlphaBook1 Alpha laptop
98 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
99 Cabriolet AlphaPC64, AlphaPCI64
Jay Estabrookd7083172007-06-01 00:47:05 -0700100 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 EB164 EB164 21164 evaluation board
102 EB64+ EB64+ 21064 evaluation board
103 EB66 EB66 21066 evaluation board
104 EB66+ EB66+ 21066 evaluation board
Jay Estabrookd7083172007-06-01 00:47:05 -0700105 Jensen DECpc 150, DEC 2000 models 300, 500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 LX164 AlphaPC164-LX
107 Lynx AS 2100A
Jay Estabrookd7083172007-06-01 00:47:05 -0700108 Miata Personal Workstation 433/500/600 a/au
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 Marvel AlphaServer ES47 / ES80 / GS1280
110 Mikasa AS 1000
111 Noname AXPpci33, UDB (Multia)
112 Noritake AS 1000A, AS 600A, AS 800
113 PC164 AlphaPC164
114 Rawhide AS 1200, AS 4000, AS 4100
115 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
116 SX164 AlphaPC164-SX
117 Sable AS 2000, AS 2100
Jay Estabrookd7083172007-06-01 00:47:05 -0700118 Shark DS 20L
119 Takara Takara (OEM)
120 Titan AlphaServer ES45 / DS25 / DS15
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 Wildfire AlphaServer GS 40/80/160/320
122
123 If you don't know what to do, choose "generic".
124
125config ALPHA_GENERIC
126 bool "Generic"
127 help
128 A generic kernel will run on all supported Alpha hardware.
129
130config ALPHA_ALCOR
131 bool "Alcor/Alpha-XLT"
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 help
204 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
205 of the first-generation Alpha systems. A number of these systems
206 seem to be available on the second- hand market. The Jensen is a
207 floor-standing tower system which originally used a 150MHz 21064 It
208 used programmable logic to interface a 486 EISA I/O bridge to the
209 CPU.
210
211config ALPHA_LX164
212 bool "LX164"
213 help
214 A technical overview of this board is available at
215 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
216
217config ALPHA_LYNX
218 bool "Lynx"
219 help
220 AlphaServer 2100A-based systems.
221
222config ALPHA_MARVEL
223 bool "Marvel"
224 help
225 AlphaServer ES47 / ES80 / GS1280 based on EV7.
226
227config ALPHA_MIATA
228 bool "Miata"
229 help
230 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
Adrian Bunkffc32d62008-10-15 22:01:19 -0700231 or 600au).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232
233config ALPHA_MIKASA
234 bool "Mikasa"
235 help
236 AlphaServer 1000-based Alpha systems.
237
238config ALPHA_NAUTILUS
239 bool "Nautilus"
240 help
241 Alpha systems based on the AMD 751 & ALI 1543C chipsets.
242
243config ALPHA_NONAME_CH
244 bool "Noname"
245
246config ALPHA_NORITAKE
247 bool "Noritake"
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 help
261 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
262 See HOWTO at
263 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
264
265config ALPHA_RUFFIAN
266 bool "Ruffian"
267 help
268 Samsung APC164UX. There is a page on known problems and workarounds
269 at <http://www.alphalinux.org/faq/FAQ-11.html>.
270
271config ALPHA_RX164
272 bool "RX164"
273
274config ALPHA_SX164
275 bool "SX164"
276
277config ALPHA_SABLE
278 bool "Sable"
279 help
280 Digital AlphaServer 2000 and 2100-based systems.
281
282config ALPHA_SHARK
283 bool "Shark"
284
285config ALPHA_TAKARA
286 bool "Takara"
287 help
288 Alpha 11164-based OEM single-board computer.
289
290config ALPHA_TITAN
291 bool "Titan"
292 help
293 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
294
295config ALPHA_WILDFIRE
296 bool "Wildfire"
297 help
298 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
299
300endchoice
301
302# clear all implied options (don't want default values for those):
303# Most of these machines have ISA slots; not exactly sure which don't,
304# and this doesn't activate hordes of code, so do it always.
305config ISA
306 bool
307 default y
308 help
309 Find out whether you have ISA slots on your motherboard. ISA is the
310 name of a bus system, i.e. the way the CPU talks to the other stuff
311 inside your box. Other bus systems are PCI, EISA, MicroChannel
312 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
313 newer boards don't support it. If you have ISA, say Y, otherwise N.
314
Al Viro5cae8412005-05-04 05:39:22 +0100315config ISA_DMA_API
316 bool
317 default y
318
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319config PCI
320 bool
321 depends on !ALPHA_JENSEN
322 default y
323 help
324 Find out whether you have a PCI motherboard. PCI is the name of a
325 bus system, i.e. the way the CPU talks to the other stuff inside
326 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
327 VESA. If you have PCI, say Y, otherwise N.
328
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329config PCI_DOMAINS
330 bool
331 default y
332
Matthew Wilcox36e23592007-07-10 10:54:40 -0600333config PCI_SYSCALL
334 def_bool PCI
335
FUJITA Tomonorifd288412008-03-13 12:32:40 -0700336config IOMMU_HELPER
337 def_bool PCI
338
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339config ALPHA_NONAME
340 bool
341 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
342 default y
343 help
344 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
345 UDB). This design was produced by Digital's Technical OEM (TOEM)
346 group. It uses the 21066 processor running at 166MHz or 233MHz. It
347 is a baby-AT size, and runs from a standard PC power supply. It has
348 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
349 2 versions, with either PS/2 or large DIN connectors for the
350 keyboard.
351
352config ALPHA_EV4
353 bool
354 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
355 default y if !ALPHA_LYNX
356
357config ALPHA_LCA
358 bool
359 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
360 default y
361
362config ALPHA_APECS
363 bool
364 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
365 default y
366
367config ALPHA_EB64P
368 bool
369 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
370 default y
371 help
372 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
373 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
374 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
375 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
376 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
377 Runs from standard PC power supply.
378
379config ALPHA_EV5
380 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
381 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
382
383config ALPHA_EV4
384 bool
385 default y if ALPHA_LYNX && !ALPHA_EV5
386
387config ALPHA_CIA
388 bool
389 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
390 default y
391
392config ALPHA_EV56
393 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
394 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
395
396config ALPHA_EV56
397 prompt "EV56 CPU (speed >= 333MHz)?"
Fernando J. Pereda060ec3d2006-09-25 23:32:37 -0700398 depends on ALPHA_NORITAKE || ALPHA_PRIMO
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399
400config ALPHA_EV56
401 prompt "EV56 CPU (speed >= 400MHz)?"
402 depends on ALPHA_RAWHIDE
403
404config ALPHA_PRIMO
405 bool "EV5 CPU daughtercard (model 5/xxx)?"
406 depends on ALPHA_NORITAKE || ALPHA_MIKASA
407 help
408 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
409
410config ALPHA_GAMMA
411 bool "EV5 CPU(s) (model 5/xxx)?"
412 depends on ALPHA_SABLE
413 help
414 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
415
416config ALPHA_GAMMA
417 bool
418 depends on ALPHA_LYNX
419 default y
420
421config ALPHA_T2
422 bool
423 depends on ALPHA_SABLE || ALPHA_LYNX
424 default y
425
426config ALPHA_PYXIS
427 bool
428 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
429 default y
430
431config ALPHA_EV6
432 bool
433 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
434 default y
435
436config ALPHA_TSUNAMI
437 bool
438 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
439 default y
440
441config ALPHA_EV67
442 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
443 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
444 help
445 Is this a machine based on the EV67 core? If in doubt, select N here
446 and the machine will be treated as an EV6.
447
448config ALPHA_EV7
449 bool
450 depends on ALPHA_MARVEL
451 default y
452
453config ALPHA_MCPCIA
454 bool
455 depends on ALPHA_RAWHIDE
456 default y
457
458config ALPHA_POLARIS
459 bool
460 depends on ALPHA_RX164
461 default y
462
463config ALPHA_IRONGATE
464 bool
465 depends on ALPHA_NAUTILUS
466 default y
467
Akinobu Mitaf7c29672006-03-26 01:39:18 -0800468config GENERIC_HWEIGHT
469 bool
Randy Dunlap5e625b02006-06-12 15:13:40 -0700470 default y if !ALPHA_EV67
Akinobu Mitaf7c29672006-03-26 01:39:18 -0800471
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472config ALPHA_AVANTI
473 bool
474 depends on ALPHA_XL || ALPHA_AVANTI_CH
475 default y
476 help
477 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
478 Alphas. Info at
479 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
480
481config ALPHA_BROKEN_IRQ_MASK
482 bool
483 depends on ALPHA_GENERIC || ALPHA_PC164
484 default y
485
Jay Estabrook025a2212007-06-01 00:47:03 -0700486config VGA_HOSE
487 bool
488 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
489 default y
490 help
491 Support VGA on an arbitrary hose; needed for several platforms
492 which always have multiple hoses, and whose consoles support it.
493
494
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495config 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 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
498 ---help---
499 There are two different types of booting firmware on Alphas: SRM,
500 which is command line driven, and ARC, which uses menus and arrow
501 keys. Details about the Linux/Alpha booting process are contained in
502 the Linux/Alpha FAQ, accessible on the WWW from
503 <http://www.alphalinux.org/>.
504
505 The usual way to load Linux on an Alpha machine is to use MILO
506 (a bootloader that lets you pass command line parameters to the
507 kernel just like lilo does for the x86 architecture) which can be
508 loaded either from ARC or can be installed directly as a permanent
509 firmware replacement from floppy (which requires changing a certain
510 jumper on the motherboard). If you want to do either of these, say N
511 here. If MILO doesn't work on your system (true for Jensen
512 motherboards), you can bypass it altogether and boot Linux directly
513 from an SRM console; say Y here in order to do that. Note that you
514 won't be able to boot from an IDE disk using SRM.
515
516 If unsure, say N.
517
518config EISA
519 bool
520 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
521 default y
522
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100523config ARCH_MAY_HAVE_PC_FDC
524 def_bool y
525
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526config SMP
527 bool "Symmetric multi-processing support"
528 depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
Jens Axboec524a1d2008-06-10 20:47:29 +0200529 select USE_GENERIC_SMP_HELPERS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 ---help---
531 This enables support for systems with more than one CPU. If you have
532 a system with only one CPU, like most personal computers, say N. If
533 you have a system with more than one CPU, say Y.
534
535 If you say N here, the kernel will run on single and multiprocessor
536 machines, but will use only one CPU of a multiprocessor machine. If
537 you say Y here, the kernel will run on many, but not all,
538 singleprocessor machines. On a singleprocessor machine, the kernel
539 will run faster if you say N here.
540
Adrian Bunk03502fa2008-02-03 15:50:21 +0200541 See also the SMP-HOWTO available at
542 <http://www.tldp.org/docs.html#howto>.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
544 If you don't know what to do here, say N.
545
546config HAVE_DEC_LOCK
547 bool
548 depends on SMP
549 default y
550
551config NR_CPUS
Jay Estabrookd7083172007-06-01 00:47:05 -0700552 int "Maximum number of CPUs (2-32)"
553 range 2 32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 depends on SMP
Jay Estabrookd7083172007-06-01 00:47:05 -0700555 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
556 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
557 help
558 MARVEL support can handle a maximum of 32 CPUs, all the others
559 with working support have a maximum of 4 CPUs.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560
Dave Hansen3f22ab22005-06-23 00:07:43 -0700561config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 bool "Discontiguous Memory Support (EXPERIMENTAL)"
563 depends on EXPERIMENTAL
564 help
Matt LaPlantefc31e832006-10-03 22:23:47 +0200565 Say Y to support efficient handling of discontiguous physical memory,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 for architectures which are either NUMA (Non-Uniform Memory Access)
567 or have huge holes in the physical address space for other reasons.
568 See <file:Documentation/vm/numa> for more.
569
Dave Hansen3f22ab22005-06-23 00:07:43 -0700570source "mm/Kconfig"
571
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572config NUMA
573 bool "NUMA Support (EXPERIMENTAL)"
Al Viro6df7c992005-08-23 22:44:50 +0100574 depends on DISCONTIGMEM && BROKEN
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 help
576 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
577 Access). This option is for configuring high-end multiprocessor
578 server machines. If in doubt, say N.
579
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700580config NODES_SHIFT
581 int
582 default "7"
583 depends on NEED_MULTIPLE_NODES
584
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585# LARGE_VMALLOC is racy, if you *really* need it then fix it first
586config ALPHA_LARGE_VMALLOC
587 bool
588 ---help---
589 Process creation and other aspects of virtual memory management can
590 be streamlined if we restrict the kernel to one PGD for all vmalloc
591 allocations. This equates to about 8GB.
592
593 Under normal circumstances, this is so far and above what is needed
594 as to be laughable. However, there are certain applications (such
595 as benchmark-grade in-kernel web serving) that can make use of as
596 much vmalloc space as is available.
597
598 Say N unless you know you need gobs and gobs of vmalloc space.
599
600config VERBOSE_MCHECK
601 bool "Verbose Machine Checks"
602
603config VERBOSE_MCHECK_ON
604 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
605 depends on VERBOSE_MCHECK
606 default 1
607 ---help---
608 This option allows the default printing mode to be set, and then
609 possibly overridden by a boot command argument.
610
611 For example, if one wanted the option of printing verbose
612 machine checks, but wanted the default to be as if verbose
613 machine check printing was turned off, then one would choose
614 the printing mode to be 0. Then, upon reboot, one could add
615 the boot command line "verbose_mcheck=1" to get the normal
616 verbose machine check printing, or "verbose_mcheck=2" to get
617 the maximum information available.
618
619 Take the default (1) unless you want more control or more info.
620
H. Peter Anvinbdc80782008-02-08 04:21:26 -0800621config HZ
622 int
623 default 1200 if ALPHA_RAWHIDE
624 default 1024
625
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626source "drivers/pci/Kconfig"
627source "drivers/eisa/Kconfig"
628
629source "drivers/pcmcia/Kconfig"
630
631config SRM_ENV
632 tristate "SRM environment through procfs"
633 depends on PROC_FS
634 ---help---
635 If you enable this option, a subdirectory inside /proc called
636 /proc/srm_environment will give you access to the all important
637 SRM environment variables (those which have a name) and also
638 to all others (by their internal number).
639
640 SRM is something like a BIOS for Alpha machines. There are some
641 other such BIOSes, like AlphaBIOS, which this driver cannot
642 support (hey, that's not SRM!).
643
644 Despite the fact that this driver doesn't work on all Alphas (but
645 only on those which have SRM as their firmware), it's save to
646 build it even if your particular machine doesn't know about SRM
647 (or if you intend to compile a generic kernel). It will simply
648 not create those subdirectory in /proc (and give you some warning,
649 of course).
650
651 This driver is also available as a module and will be called
652 srm_env then.
653
654source "fs/Kconfig.binfmt"
655
656endmenu
657
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700658source "net/Kconfig"
659
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660source "drivers/Kconfig"
661
662source "fs/Kconfig"
663
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664source "arch/alpha/Kconfig.debug"
665
Jay Estabrook025a2212007-06-01 00:47:03 -0700666# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
667# but we also need it if VGA_HOSE is set
668config DUMMY_CONSOLE
669 bool
670 depends on VGA_HOSE
671 default y
672
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673source "security/Kconfig"
674
675source "crypto/Kconfig"
676
677source "lib/Kconfig"
678