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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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 help
18 The Alpha is a 64-bit general-purpose processor designed and
19 marketed by the Digital Equipment Corporation of blessed memory,
20 now Hewlett-Packard. The Alpha Linux project has a home page at
21 <http://www.alphalinux.org/>.
22
23config 64BIT
24 def_bool y
25
26config MMU
27 bool
28 default y
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030config RWSEM_GENERIC_SPINLOCK
31 bool
32
33config RWSEM_XCHGADD_ALGORITHM
34 bool
35 default y
36
David Howellsf0d1b0b2006-12-08 02:37:49 -080037config ARCH_HAS_ILOG2_U32
38 bool
39 default n
40
41config ARCH_HAS_ILOG2_U64
42 bool
43 default n
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045config GENERIC_CALIBRATE_DELAY
46 bool
47 default y
48
John Stultz1e871be2010-03-03 19:57:16 -080049config GENERIC_CMOS_UPDATE
50 def_bool y
51
Mark Brown81ee42b2011-05-24 17:12:57 -070052config GENERIC_GPIO
53 def_bool y
54
Christoph Lameter5ac6da62007-02-10 01:43:14 -080055config ZONE_DMA
56 bool
57 default y
58
FUJITA Tomonori947272d2010-10-26 14:22:15 -070059config ARCH_DMA_ADDR_T_64BIT
60 def_bool y
61
FUJITA Tomonori08d925b2010-03-10 15:23:23 -080062config NEED_DMA_MAP_STATE
63 def_bool y
64
FUJITA Tomonori48c7cf42010-05-26 14:44:34 -070065config NEED_SG_DMA_LENGTH
66 def_bool y
67
Linus Torvalds1da177e2005-04-16 15:20:36 -070068config GENERIC_ISA_DMA
69 bool
70 default y
71
72config GENERIC_IOMAP
73 bool
74 default n
75
76source "init/Kconfig"
Matt Helsleydc52ddc2008-10-18 20:27:21 -070077source "kernel/Kconfig.freezer"
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
79
80menu "System setup"
81
82choice
83 prompt "Alpha system type"
84 default ALPHA_GENERIC
85 ---help---
86 This is the system type of your hardware. A "generic" kernel will
87 run on any supported Alpha system. However, if you configure a
88 kernel for your specific system, it will be faster and smaller.
89
90 To find out what type of Alpha system you have, you may want to
91 check out the Linux/Alpha FAQ, accessible on the WWW from
92 <http://www.alphalinux.org/>. In summary:
93
Jay Estabrookd7083172007-06-01 00:47:05 -070094 Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 Alpha-XL XL-233, XL-266
96 AlphaBook1 Alpha laptop
97 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
98 Cabriolet AlphaPC64, AlphaPCI64
Jay Estabrookd7083172007-06-01 00:47:05 -070099 DP264 DP264 / DS20 / ES40 / DS10 / DS10L
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 EB164 EB164 21164 evaluation board
101 EB64+ EB64+ 21064 evaluation board
102 EB66 EB66 21066 evaluation board
103 EB66+ EB66+ 21066 evaluation board
Jay Estabrookd7083172007-06-01 00:47:05 -0700104 Jensen DECpc 150, DEC 2000 models 300, 500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 LX164 AlphaPC164-LX
106 Lynx AS 2100A
Jay Estabrookd7083172007-06-01 00:47:05 -0700107 Miata Personal Workstation 433/500/600 a/au
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 Marvel AlphaServer ES47 / ES80 / GS1280
109 Mikasa AS 1000
110 Noname AXPpci33, UDB (Multia)
111 Noritake AS 1000A, AS 600A, AS 800
112 PC164 AlphaPC164
113 Rawhide AS 1200, AS 4000, AS 4100
114 Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
115 SX164 AlphaPC164-SX
116 Sable AS 2000, AS 2100
Jay Estabrookd7083172007-06-01 00:47:05 -0700117 Shark DS 20L
118 Takara Takara (OEM)
119 Titan AlphaServer ES45 / DS25 / DS15
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 Wildfire AlphaServer GS 40/80/160/320
121
122 If you don't know what to do, choose "generic".
123
124config ALPHA_GENERIC
125 bool "Generic"
126 help
127 A generic kernel will run on all supported Alpha hardware.
128
129config ALPHA_ALCOR
130 bool "Alcor/Alpha-XLT"
131 help
132 For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
133 slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
134 Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
135 controller (256-bit memory bus) and a PCI interface. It also does
136 all the work required to support an external Bcache and to maintain
137 memory coherence when a PCI device DMAs into (or out of) memory.
138
139config ALPHA_XL
140 bool "Alpha-XL"
141 help
142 XL-233 and XL-266-based Alpha systems.
143
144config ALPHA_BOOK1
145 bool "AlphaBook1"
146 help
147 Dec AlphaBook1/Burns Alpha-based laptops.
148
149config ALPHA_AVANTI_CH
150 bool "Avanti"
151
152config ALPHA_CABRIOLET
153 bool "Cabriolet"
154 help
155 Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
156 baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
157 slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
158 Bcache SIMMs. Requires power supply with 3.3V output.
159
160config ALPHA_DP264
161 bool "DP264"
162 help
163 Various 21264 systems with the tsunami core logic chipset.
164 API Networks: 264DP, UP2000(+), CS20;
165 Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
166
167config ALPHA_EB164
168 bool "EB164"
169 help
170 EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
171 ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
172 shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
173 Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
174 MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
175 motherboard. Requires power supply with 3.3V output.
176
177config ALPHA_EB64P_CH
178 bool "EB64+"
179
180config ALPHA_EB66
181 bool "EB66"
182 help
183 A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
184 identical to EB64+. Baby PC-AT size. Runs from standard PC power
185 supply. The EB66 schematic was published as a marketing poster
186 advertising the 21066 as "the first microprocessor in the world with
187 embedded PCI".
188
189config ALPHA_EB66P
190 bool "EB66+"
191 help
192 Later variant of the EB66 board.
193
194config ALPHA_EIGER
195 bool "Eiger"
196 help
197 Apparently an obscure OEM single-board computer based on the
198 Typhoon/Tsunami chipset family. Information on it is scanty.
199
200config ALPHA_JENSEN
201 bool "Jensen"
202 help
203 DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
204 of the first-generation Alpha systems. A number of these systems
205 seem to be available on the second- hand market. The Jensen is a
206 floor-standing tower system which originally used a 150MHz 21064 It
207 used programmable logic to interface a 486 EISA I/O bridge to the
208 CPU.
209
210config ALPHA_LX164
211 bool "LX164"
212 help
213 A technical overview of this board is available at
214 <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
215
216config ALPHA_LYNX
217 bool "Lynx"
218 help
219 AlphaServer 2100A-based systems.
220
221config ALPHA_MARVEL
222 bool "Marvel"
223 help
224 AlphaServer ES47 / ES80 / GS1280 based on EV7.
225
226config ALPHA_MIATA
227 bool "Miata"
228 help
229 The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
Adrian Bunkffc32d62008-10-15 22:01:19 -0700230 or 600au).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231
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 help
248 AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
249 systems.
250
251config ALPHA_PC164
252 bool "PC164"
253
254config ALPHA_P2K
255 bool "Platform2000"
256
257config ALPHA_RAWHIDE
258 bool "Rawhide"
259 help
260 AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
261 See HOWTO at
262 <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
263
264config ALPHA_RUFFIAN
265 bool "Ruffian"
266 help
267 Samsung APC164UX. There is a page on known problems and workarounds
268 at <http://www.alphalinux.org/faq/FAQ-11.html>.
269
270config ALPHA_RX164
271 bool "RX164"
272
273config ALPHA_SX164
274 bool "SX164"
275
276config ALPHA_SABLE
277 bool "Sable"
278 help
279 Digital AlphaServer 2000 and 2100-based systems.
280
281config ALPHA_SHARK
282 bool "Shark"
283
284config ALPHA_TAKARA
285 bool "Takara"
286 help
287 Alpha 11164-based OEM single-board computer.
288
289config ALPHA_TITAN
290 bool "Titan"
291 help
292 AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
293
294config ALPHA_WILDFIRE
295 bool "Wildfire"
296 help
297 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
298
299endchoice
300
301# clear all implied options (don't want default values for those):
302# Most of these machines have ISA slots; not exactly sure which don't,
303# and this doesn't activate hordes of code, so do it always.
304config ISA
305 bool
306 default y
307 help
308 Find out whether you have ISA slots on your motherboard. ISA is the
309 name of a bus system, i.e. the way the CPU talks to the other stuff
310 inside your box. Other bus systems are PCI, EISA, MicroChannel
311 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
312 newer boards don't support it. If you have ISA, say Y, otherwise N.
313
Al Viro5cae8412005-05-04 05:39:22 +0100314config ISA_DMA_API
315 bool
316 default y
317
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318config PCI
319 bool
320 depends on !ALPHA_JENSEN
321 default y
322 help
323 Find out whether you have a PCI motherboard. PCI is the name of a
324 bus system, i.e. the way the CPU talks to the other stuff inside
325 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
326 VESA. If you have PCI, say Y, otherwise N.
327
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328config PCI_DOMAINS
329 bool
330 default y
331
Matthew Wilcox36e23592007-07-10 10:54:40 -0600332config PCI_SYSCALL
333 def_bool PCI
334
FUJITA Tomonorifd288412008-03-13 12:32:40 -0700335config IOMMU_HELPER
336 def_bool PCI
337
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338config ALPHA_NONAME
339 bool
340 depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
341 default y
342 help
343 The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
344 UDB). This design was produced by Digital's Technical OEM (TOEM)
345 group. It uses the 21066 processor running at 166MHz or 233MHz. It
346 is a baby-AT size, and runs from a standard PC power supply. It has
347 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
348 2 versions, with either PS/2 or large DIN connectors for the
349 keyboard.
350
351config ALPHA_EV4
352 bool
353 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
354 default y if !ALPHA_LYNX
355
356config ALPHA_LCA
357 bool
358 depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
359 default y
360
361config ALPHA_APECS
362 bool
363 depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
364 default y
365
366config ALPHA_EB64P
367 bool
368 depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
369 default y
370 help
371 Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
372 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
373 ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
374 (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
375 SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
376 Runs from standard PC power supply.
377
378config ALPHA_EV5
379 bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
380 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
381
382config ALPHA_EV4
383 bool
384 default y if ALPHA_LYNX && !ALPHA_EV5
385
386config ALPHA_CIA
387 bool
388 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
389 default y
390
391config ALPHA_EV56
392 bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
393 default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
394
395config ALPHA_EV56
396 prompt "EV56 CPU (speed >= 333MHz)?"
Fernando J. Pereda060ec3d2006-09-25 23:32:37 -0700397 depends on ALPHA_NORITAKE || ALPHA_PRIMO
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
399config ALPHA_EV56
400 prompt "EV56 CPU (speed >= 400MHz)?"
401 depends on ALPHA_RAWHIDE
402
403config ALPHA_PRIMO
404 bool "EV5 CPU daughtercard (model 5/xxx)?"
405 depends on ALPHA_NORITAKE || ALPHA_MIKASA
406 help
407 Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
408
409config ALPHA_GAMMA
410 bool "EV5 CPU(s) (model 5/xxx)?"
411 depends on ALPHA_SABLE
412 help
413 Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
414
415config ALPHA_GAMMA
416 bool
417 depends on ALPHA_LYNX
418 default y
419
420config ALPHA_T2
421 bool
422 depends on ALPHA_SABLE || ALPHA_LYNX
423 default y
424
425config ALPHA_PYXIS
426 bool
427 depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
428 default y
429
430config ALPHA_EV6
431 bool
432 depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
433 default y
434
435config ALPHA_TSUNAMI
436 bool
437 depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
438 default y
439
440config ALPHA_EV67
441 bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
442 default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
443 help
444 Is this a machine based on the EV67 core? If in doubt, select N here
445 and the machine will be treated as an EV6.
446
447config ALPHA_EV7
448 bool
449 depends on ALPHA_MARVEL
450 default y
451
452config ALPHA_MCPCIA
453 bool
454 depends on ALPHA_RAWHIDE
455 default y
456
457config ALPHA_POLARIS
458 bool
459 depends on ALPHA_RX164
460 default y
461
462config ALPHA_IRONGATE
463 bool
464 depends on ALPHA_NAUTILUS
465 default y
466
Akinobu Mitaf7c29672006-03-26 01:39:18 -0800467config GENERIC_HWEIGHT
468 bool
Randy Dunlap5e625b02006-06-12 15:13:40 -0700469 default y if !ALPHA_EV67
Akinobu Mitaf7c29672006-03-26 01:39:18 -0800470
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471config ALPHA_AVANTI
472 bool
473 depends on ALPHA_XL || ALPHA_AVANTI_CH
474 default y
475 help
476 Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
477 Alphas. Info at
478 <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
479
480config ALPHA_BROKEN_IRQ_MASK
481 bool
482 depends on ALPHA_GENERIC || ALPHA_PC164
483 default y
484
Jay Estabrook025a2212007-06-01 00:47:03 -0700485config VGA_HOSE
486 bool
487 depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI
488 default y
489 help
490 Support VGA on an arbitrary hose; needed for several platforms
491 which always have multiple hoses, and whose consoles support it.
492
493
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494config ALPHA_SRM
495 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
496 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
497 ---help---
498 There are two different types of booting firmware on Alphas: SRM,
499 which is command line driven, and ARC, which uses menus and arrow
500 keys. Details about the Linux/Alpha booting process are contained in
501 the Linux/Alpha FAQ, accessible on the WWW from
502 <http://www.alphalinux.org/>.
503
504 The usual way to load Linux on an Alpha machine is to use MILO
505 (a bootloader that lets you pass command line parameters to the
506 kernel just like lilo does for the x86 architecture) which can be
507 loaded either from ARC or can be installed directly as a permanent
508 firmware replacement from floppy (which requires changing a certain
509 jumper on the motherboard). If you want to do either of these, say N
510 here. If MILO doesn't work on your system (true for Jensen
511 motherboards), you can bypass it altogether and boot Linux directly
512 from an SRM console; say Y here in order to do that. Note that you
513 won't be able to boot from an IDE disk using SRM.
514
515 If unsure, say N.
516
517config EISA
518 bool
519 depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
520 default y
521
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100522config ARCH_MAY_HAVE_PC_FDC
523 def_bool y
524
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525config SMP
526 bool "Symmetric multi-processing support"
527 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 +0200528 select USE_GENERIC_SMP_HELPERS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 ---help---
530 This enables support for systems with more than one CPU. If you have
531 a system with only one CPU, like most personal computers, say N. If
532 you have a system with more than one CPU, say Y.
533
534 If you say N here, the kernel will run on single and multiprocessor
535 machines, but will use only one CPU of a multiprocessor machine. If
536 you say Y here, the kernel will run on many, but not all,
537 singleprocessor machines. On a singleprocessor machine, the kernel
538 will run faster if you say N here.
539
Adrian Bunk03502fa2008-02-03 15:50:21 +0200540 See also the SMP-HOWTO available at
541 <http://www.tldp.org/docs.html#howto>.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542
543 If you don't know what to do here, say N.
544
545config HAVE_DEC_LOCK
546 bool
547 depends on SMP
548 default y
549
550config NR_CPUS
Jay Estabrookd7083172007-06-01 00:47:05 -0700551 int "Maximum number of CPUs (2-32)"
552 range 2 32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 depends on SMP
Jay Estabrookd7083172007-06-01 00:47:05 -0700554 default "32" if ALPHA_GENERIC || ALPHA_MARVEL
555 default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
556 help
557 MARVEL support can handle a maximum of 32 CPUs, all the others
558 with working support have a maximum of 4 CPUs.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
Dave Hansen3f22ab22005-06-23 00:07:43 -0700560config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 bool "Discontiguous Memory Support (EXPERIMENTAL)"
562 depends on EXPERIMENTAL
563 help
Matt LaPlantefc31e832006-10-03 22:23:47 +0200564 Say Y to support efficient handling of discontiguous physical memory,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 for architectures which are either NUMA (Non-Uniform Memory Access)
566 or have huge holes in the physical address space for other reasons.
567 See <file:Documentation/vm/numa> for more.
568
Dave Hansen3f22ab22005-06-23 00:07:43 -0700569source "mm/Kconfig"
570
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571config NUMA
572 bool "NUMA Support (EXPERIMENTAL)"
Al Viro6df7c992005-08-23 22:44:50 +0100573 depends on DISCONTIGMEM && BROKEN
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 help
575 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
576 Access). This option is for configuring high-end multiprocessor
577 server machines. If in doubt, say N.
578
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700579config NODES_SHIFT
580 int
581 default "7"
582 depends on NEED_MULTIPLE_NODES
583
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584# LARGE_VMALLOC is racy, if you *really* need it then fix it first
585config ALPHA_LARGE_VMALLOC
586 bool
587 ---help---
588 Process creation and other aspects of virtual memory management can
589 be streamlined if we restrict the kernel to one PGD for all vmalloc
590 allocations. This equates to about 8GB.
591
592 Under normal circumstances, this is so far and above what is needed
593 as to be laughable. However, there are certain applications (such
594 as benchmark-grade in-kernel web serving) that can make use of as
595 much vmalloc space as is available.
596
597 Say N unless you know you need gobs and gobs of vmalloc space.
598
599config VERBOSE_MCHECK
600 bool "Verbose Machine Checks"
601
602config VERBOSE_MCHECK_ON
603 int "Verbose Printing Mode (0=off, 1=on, 2=all)"
604 depends on VERBOSE_MCHECK
605 default 1
606 ---help---
607 This option allows the default printing mode to be set, and then
608 possibly overridden by a boot command argument.
609
610 For example, if one wanted the option of printing verbose
611 machine checks, but wanted the default to be as if verbose
612 machine check printing was turned off, then one would choose
613 the printing mode to be 0. Then, upon reboot, one could add
614 the boot command line "verbose_mcheck=1" to get the normal
615 verbose machine check printing, or "verbose_mcheck=2" to get
616 the maximum information available.
617
618 Take the default (1) unless you want more control or more info.
619
H. Peter Anvinbdc80782008-02-08 04:21:26 -0800620config HZ
621 int
622 default 1200 if ALPHA_RAWHIDE
623 default 1024
624
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625source "drivers/pci/Kconfig"
626source "drivers/eisa/Kconfig"
627
628source "drivers/pcmcia/Kconfig"
629
630config SRM_ENV
631 tristate "SRM environment through procfs"
632 depends on PROC_FS
633 ---help---
634 If you enable this option, a subdirectory inside /proc called
635 /proc/srm_environment will give you access to the all important
636 SRM environment variables (those which have a name) and also
637 to all others (by their internal number).
638
639 SRM is something like a BIOS for Alpha machines. There are some
640 other such BIOSes, like AlphaBIOS, which this driver cannot
641 support (hey, that's not SRM!).
642
643 Despite the fact that this driver doesn't work on all Alphas (but
644 only on those which have SRM as their firmware), it's save to
645 build it even if your particular machine doesn't know about SRM
646 (or if you intend to compile a generic kernel). It will simply
647 not create those subdirectory in /proc (and give you some warning,
648 of course).
649
650 This driver is also available as a module and will be called
651 srm_env then.
652
653source "fs/Kconfig.binfmt"
654
655endmenu
656
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700657source "net/Kconfig"
658
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659source "drivers/Kconfig"
660
661source "fs/Kconfig"
662
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663source "arch/alpha/Kconfig.debug"
664
Jay Estabrook025a2212007-06-01 00:47:03 -0700665# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
666# but we also need it if VGA_HOSE is set
667config DUMMY_CONSOLE
668 bool
669 depends on VGA_HOSE
670 default y
671
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672source "security/Kconfig"
673
674source "crypto/Kconfig"
675
676source "lib/Kconfig"
677