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Linux/arch/alpha/Kconfig

  1 config 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 HAVE_DMA_ATTRS
 13         select VIRT_TO_BUS
 14         select GENERIC_IRQ_PROBE
 15         select AUTO_IRQ_AFFINITY if SMP
 16         select GENERIC_IRQ_SHOW
 17         select ARCH_WANT_OPTIONAL_GPIOLIB
 18         select ARCH_WANT_IPC_PARSE_VERSION
 19         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 20         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 21         select AUDIT_ARCH
 22         select GENERIC_CLOCKEVENTS
 23         select GENERIC_SMP_IDLE_THREAD
 24         select GENERIC_STRNCPY_FROM_USER
 25         select GENERIC_STRNLEN_USER
 26         select HAVE_ARCH_AUDITSYSCALL
 27         select HAVE_MOD_ARCH_SPECIFIC
 28         select MODULES_USE_ELF_RELA
 29         select ODD_RT_SIGACTION
 30         select OLD_SIGSUSPEND
 31         help
 32           The Alpha is a 64-bit general-purpose processor designed and
 33           marketed by the Digital Equipment Corporation of blessed memory,
 34           now Hewlett-Packard.  The Alpha Linux project has a home page at
 35           <http://www.alphalinux.org/>.
 36 
 37 config 64BIT
 38         def_bool y
 39 
 40 config MMU
 41         bool
 42         default y
 43 
 44 config RWSEM_GENERIC_SPINLOCK
 45         bool
 46 
 47 config RWSEM_XCHGADD_ALGORITHM
 48         bool
 49         default y
 50 
 51 config ARCH_HAS_ILOG2_U32
 52         bool
 53         default n
 54 
 55 config ARCH_HAS_ILOG2_U64
 56         bool
 57         default n
 58 
 59 config GENERIC_CALIBRATE_DELAY
 60         bool
 61         default y
 62 
 63 config ZONE_DMA
 64         bool
 65         default y
 66 
 67 config ARCH_DMA_ADDR_T_64BIT
 68         def_bool y
 69 
 70 config NEED_DMA_MAP_STATE
 71        def_bool y
 72 
 73 config NEED_SG_DMA_LENGTH
 74         def_bool y
 75 
 76 config GENERIC_ISA_DMA
 77         bool
 78         default y
 79 
 80 config PGTABLE_LEVELS
 81         int
 82         default 3
 83 
 84 source "init/Kconfig"
 85 source "kernel/Kconfig.freezer"
 86 
 87 config AUDIT_ARCH
 88         bool
 89 
 90 menu "System setup"
 91 
 92 choice
 93         prompt "Alpha system type"
 94         default ALPHA_GENERIC
 95         ---help---
 96           This is the system type of your hardware.  A "generic" kernel will
 97           run on any supported Alpha system. However, if you configure a
 98           kernel for your specific system, it will be faster and smaller.
 99 
100           To find out what type of Alpha system you have, you may want to
101           check out the Linux/Alpha FAQ, accessible on the WWW from
102           <http://www.alphalinux.org/>. In summary:
103 
104           Alcor/Alpha-XLT     AS 600, AS 500, XL-300, XL-366
105           Alpha-XL            XL-233, XL-266
106           AlphaBook1          Alpha laptop
107           Avanti              AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
108           Cabriolet           AlphaPC64, AlphaPCI64
109           DP264               DP264 / DS20 / ES40 / DS10 / DS10L
110           EB164               EB164 21164 evaluation board
111           EB64+               EB64+ 21064 evaluation board
112           EB66                EB66 21066 evaluation board
113           EB66+               EB66+ 21066 evaluation board
114           Jensen              DECpc 150, DEC 2000 models 300, 500
115           LX164               AlphaPC164-LX
116           Lynx                AS 2100A
117           Miata               Personal Workstation 433/500/600 a/au
118           Marvel              AlphaServer ES47 / ES80 / GS1280
119           Mikasa              AS 1000
120           Noname              AXPpci33, UDB (Multia)
121           Noritake            AS 1000A, AS 600A, AS 800
122           PC164               AlphaPC164
123           Rawhide             AS 1200, AS 4000, AS 4100
124           Ruffian             RPX164-2, AlphaPC164-UX, AlphaPC164-BX
125           SX164               AlphaPC164-SX
126           Sable               AS 2000, AS 2100
127           Shark               DS 20L
128           Takara              Takara (OEM)
129           Titan               AlphaServer ES45 / DS25 / DS15
130           Wildfire            AlphaServer GS 40/80/160/320
131 
132           If you don't know what to do, choose "generic".
133 
134 config ALPHA_GENERIC
135         bool "Generic"
136         depends on TTY
137         help
138           A generic kernel will run on all supported Alpha hardware.
139 
140 config ALPHA_ALCOR
141         bool "Alcor/Alpha-XLT"
142         help
143           For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
144           slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
145           Address, CIA) - a 383 pin plastic PGA).  It provides a DRAM
146           controller (256-bit memory bus) and a PCI interface.  It also does
147           all the work required to support an external Bcache and to maintain
148           memory coherence when a PCI device DMAs into (or out of) memory.
149 
150 config ALPHA_XL
151         bool "Alpha-XL"
152         help
153           XL-233 and XL-266-based Alpha systems.
154 
155 config ALPHA_BOOK1
156         bool "AlphaBook1"
157         help
158           Dec AlphaBook1/Burns Alpha-based laptops.
159 
160 config ALPHA_AVANTI_CH
161         bool "Avanti"
162 
163 config ALPHA_CABRIOLET
164         bool "Cabriolet"
165         help
166           Cabriolet AlphaPC64, AlphaPCI64 systems.  Derived from EB64+ but now
167           baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
168           slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
169           Bcache SIMMs.  Requires power supply with 3.3V output.
170 
171 config ALPHA_DP264
172         bool "DP264"
173         help
174           Various 21264 systems with the tsunami core logic chipset.
175           API Networks: 264DP, UP2000(+), CS20;
176           Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
177 
178 config ALPHA_EB164
179         bool "EB164"
180         help
181           EB164 21164 evaluation board from DEC.  Uses 21164 and ALCOR.  Has
182           ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
183           shared with an ISA slot) and 2 32-bit PCI slots.  Uses plus-in
184           Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
185           MOUSE (PS2 style), RTC/NVRAM.  Boot ROM is Flash.  PC-AT-sized
186           motherboard.  Requires power supply with 3.3V output.
187 
188 config ALPHA_EB64P_CH
189         bool "EB64+"
190 
191 config ALPHA_EB66
192         bool "EB66"
193         help
194           A Digital DS group board.  Uses 21066 or 21066A.  I/O sub-system is
195           identical to EB64+.  Baby PC-AT size.  Runs from standard PC power
196           supply.  The EB66 schematic was published as a marketing poster
197           advertising the 21066 as "the first microprocessor in the world with
198           embedded PCI".
199 
200 config ALPHA_EB66P
201         bool "EB66+"
202         help
203           Later variant of the EB66 board.
204 
205 config ALPHA_EIGER
206         bool "Eiger"
207         help
208           Apparently an obscure OEM single-board computer based on the
209           Typhoon/Tsunami chipset family. Information on it is scanty.
210 
211 config ALPHA_JENSEN
212         bool "Jensen"
213         help
214           DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
215           of the first-generation Alpha systems. A number of these systems
216           seem to be available on the second- hand market. The Jensen is a
217           floor-standing tower system which originally used a 150MHz 21064 It
218           used programmable logic to interface a 486 EISA I/O bridge to the
219           CPU.
220 
221 config ALPHA_LX164
222         bool "LX164"
223         help
224           A technical overview of this board is available at
225           <http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
226 
227 config ALPHA_LYNX
228         bool "Lynx"
229         help
230           AlphaServer 2100A-based systems.
231 
232 config ALPHA_MARVEL
233         bool "Marvel"
234         help
235           AlphaServer ES47 / ES80 / GS1280 based on EV7.
236 
237 config ALPHA_MIATA
238         bool "Miata"
239         help
240           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
241           or 600au).
242 
243 config ALPHA_MIKASA
244         bool "Mikasa"
245         help
246           AlphaServer 1000-based Alpha systems.
247 
248 config ALPHA_NAUTILUS
249         bool "Nautilus"
250         help
251           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
252 
253 config ALPHA_NONAME_CH
254         bool "Noname"
255 
256 config ALPHA_NORITAKE
257         bool "Noritake"
258         help
259           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
260           systems.
261 
262 config ALPHA_PC164
263         bool "PC164"
264 
265 config ALPHA_P2K
266         bool "Platform2000"
267 
268 config ALPHA_RAWHIDE
269         bool "Rawhide"
270         help
271           AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
272           See HOWTO at
273           <http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
274 
275 config ALPHA_RUFFIAN
276         bool "Ruffian"
277         help
278           Samsung APC164UX.  There is a page on known problems and workarounds
279           at <http://www.alphalinux.org/faq/FAQ-11.html>.
280 
281 config ALPHA_RX164
282         bool "RX164"
283 
284 config ALPHA_SX164
285         bool "SX164"
286 
287 config ALPHA_SABLE
288         bool "Sable"
289         help
290           Digital AlphaServer 2000 and 2100-based systems.
291 
292 config ALPHA_SHARK
293         bool "Shark"
294 
295 config ALPHA_TAKARA
296         bool "Takara"
297         help
298           Alpha 11164-based OEM single-board computer.
299 
300 config ALPHA_TITAN
301         bool "Titan"
302         help
303           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
304 
305 config ALPHA_WILDFIRE
306         bool "Wildfire"
307         help
308           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
309 
310 endchoice
311 
312 # clear all implied options (don't want default values for those):
313 # Most of these machines have ISA slots; not exactly sure which don't,
314 # and this doesn't activate hordes of code, so do it always.
315 config ISA
316         bool
317         default y
318         help
319           Find out whether you have ISA slots on your motherboard.  ISA is the
320           name of a bus system, i.e. the way the CPU talks to the other stuff
321           inside your box.  Other bus systems are PCI, EISA, MicroChannel
322           (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
323           newer boards don't support it.  If you have ISA, say Y, otherwise N.
324 
325 config ISA_DMA_API
326         bool
327         default y
328 
329 config PCI
330         bool
331         depends on !ALPHA_JENSEN
332         select GENERIC_PCI_IOMAP
333         default y
334         help
335           Find out whether you have a PCI motherboard. PCI is the name of a
336           bus system, i.e. the way the CPU talks to the other stuff inside
337           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
338           VESA. If you have PCI, say Y, otherwise N.
339 
340 config PCI_DOMAINS
341         bool
342         default y
343 
344 config PCI_SYSCALL
345         def_bool PCI
346 
347 config IOMMU_HELPER
348         def_bool PCI
349 
350 config ALPHA_NONAME
351         bool
352         depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
353         default y
354         help
355           The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
356           UDB).  This design was produced by Digital's Technical OEM (TOEM)
357           group. It uses the 21066 processor running at 166MHz or 233MHz. It
358           is a baby-AT size, and runs from a standard PC power supply. It has
359           5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
360           2 versions, with either PS/2 or large DIN connectors for the
361           keyboard.
362 
363 config ALPHA_EV4
364         bool
365         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
366         default y if !ALPHA_LYNX
367 
368 config ALPHA_LCA
369         bool
370         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
371         default y
372 
373 config ALPHA_APECS
374         bool
375         depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
376         default y
377 
378 config ALPHA_EB64P
379         bool
380         depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
381         default y
382         help
383           Uses 21064 or 21064A and APECs.  Has ISA and PCI expansion (3 ISA,
384           2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
385           ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
386           (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
387           SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM.  PC-AT size.
388           Runs from standard PC power supply.
389 
390 config ALPHA_EV5
391         bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
392         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
393 
394 config ALPHA_EV4
395         bool
396         default y if ALPHA_LYNX && !ALPHA_EV5
397 
398 config ALPHA_CIA
399         bool
400         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
401         default y
402 
403 config ALPHA_EV56
404         bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
405         default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
406 
407 config ALPHA_EV56
408         prompt "EV56 CPU (speed >= 333MHz)?"
409         depends on ALPHA_NORITAKE || ALPHA_PRIMO
410 
411 config ALPHA_EV56
412         prompt "EV56 CPU (speed >= 400MHz)?"
413         depends on ALPHA_RAWHIDE
414 
415 config ALPHA_PRIMO
416         bool "EV5 CPU daughtercard (model 5/xxx)?"
417         depends on ALPHA_NORITAKE || ALPHA_MIKASA
418         help
419           Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
420 
421 config ALPHA_GAMMA
422         bool "EV5 CPU(s) (model 5/xxx)?"
423         depends on ALPHA_SABLE
424         help
425           Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
426 
427 config ALPHA_GAMMA
428         bool
429         depends on ALPHA_LYNX
430         default y
431 
432 config ALPHA_T2
433         bool
434         depends on ALPHA_SABLE || ALPHA_LYNX
435         default y
436 
437 config ALPHA_PYXIS
438         bool
439         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
440         default y
441 
442 config ALPHA_EV6
443         bool
444         depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
445         default y
446 
447 config ALPHA_TSUNAMI
448         bool
449         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
450         default y
451 
452 config ALPHA_EV67
453         bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
454         default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
455         help
456           Is this a machine based on the EV67 core?  If in doubt, select N here
457           and the machine will be treated as an EV6.
458 
459 config ALPHA_MCPCIA
460         bool
461         depends on ALPHA_RAWHIDE
462         default y
463 
464 config ALPHA_POLARIS
465         bool
466         depends on ALPHA_RX164
467         default y
468 
469 config ALPHA_IRONGATE
470         bool
471         depends on ALPHA_NAUTILUS
472         default y
473 
474 config GENERIC_HWEIGHT
475         bool
476         default y if !ALPHA_EV67
477 
478 config ALPHA_AVANTI
479         bool
480         depends on ALPHA_XL || ALPHA_AVANTI_CH
481         default y
482         help
483           Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
484           Alphas. Info at
485           <http://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
486 
487 config ALPHA_BROKEN_IRQ_MASK
488         bool
489         depends on ALPHA_GENERIC || ALPHA_PC164
490         default y
491 
492 config VGA_HOSE
493         bool
494         depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
495         default y
496         help
497           Support VGA on an arbitrary hose; needed for several platforms
498           which always have multiple hoses, and whose consoles support it.
499 
500 
501 config ALPHA_QEMU
502         bool "Run under QEMU emulation"
503         depends on !ALPHA_GENERIC
504         ---help---
505           Assume the presence of special features supported by QEMU PALcode
506           that reduce the overhead of system emulation.
507 
508           Generic kernels will auto-detect QEMU.  But when building a
509           system-specific kernel, the assumption is that we want to
510           elimiate as many runtime tests as possible.
511 
512           If unsure, say N.
513 
514 
515 config ALPHA_SRM
516         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
517         depends on TTY
518         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
519         ---help---
520           There are two different types of booting firmware on Alphas: SRM,
521           which is command line driven, and ARC, which uses menus and arrow
522           keys. Details about the Linux/Alpha booting process are contained in
523           the Linux/Alpha FAQ, accessible on the WWW from
524           <http://www.alphalinux.org/>.
525 
526           The usual way to load Linux on an Alpha machine is to use MILO
527           (a bootloader that lets you pass command line parameters to the
528           kernel just like lilo does for the x86 architecture) which can be
529           loaded either from ARC or can be installed directly as a permanent
530           firmware replacement from floppy (which requires changing a certain
531           jumper on the motherboard). If you want to do either of these, say N
532           here. If MILO doesn't work on your system (true for Jensen
533           motherboards), you can bypass it altogether and boot Linux directly
534           from an SRM console; say Y here in order to do that. Note that you
535           won't be able to boot from an IDE disk using SRM.
536 
537           If unsure, say N.
538 
539 config EISA
540         bool
541         depends on ALPHA_GENERIC || ALPHA_JENSEN || ALPHA_ALCOR || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_RAWHIDE
542         default y
543 
544 config ARCH_MAY_HAVE_PC_FDC
545         def_bool y
546 
547 config SMP
548         bool "Symmetric multi-processing support"
549         depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
550         ---help---
551           This enables support for systems with more than one CPU. If you have
552           a system with only one CPU, say N. If you have a system with more
553           than one CPU, say Y.
554 
555           If you say N here, the kernel will run on uni- and multiprocessor
556           machines, but will use only one CPU of a multiprocessor machine. If
557           you say Y here, the kernel will run on many, but not all,
558           uniprocessor machines. On a uniprocessor machine, the kernel
559           will run faster if you say N here.
560 
561           See also the SMP-HOWTO available at
562           <http://www.tldp.org/docs.html#howto>.
563 
564           If you don't know what to do here, say N.
565 
566 config HAVE_DEC_LOCK
567         bool
568         depends on SMP
569         default y
570 
571 config NR_CPUS
572         int "Maximum number of CPUs (2-32)"
573         range 2 32
574         depends on SMP
575         default "32" if ALPHA_GENERIC || ALPHA_MARVEL
576         default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
577         help
578           MARVEL support can handle a maximum of 32 CPUs, all the others
579           with working support have a maximum of 4 CPUs.
580 
581 config ARCH_DISCONTIGMEM_ENABLE
582         bool "Discontiguous Memory Support"
583         help
584           Say Y to support efficient handling of discontiguous physical memory,
585           for architectures which are either NUMA (Non-Uniform Memory Access)
586           or have huge holes in the physical address space for other reasons.
587           See <file:Documentation/vm/numa> for more.
588 
589 source "mm/Kconfig"
590 
591 config NUMA
592         bool "NUMA Support (EXPERIMENTAL)"
593         depends on DISCONTIGMEM && BROKEN
594         help
595           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
596           Access).  This option is for configuring high-end multiprocessor
597           server machines.  If in doubt, say N.
598 
599 config ALPHA_WTINT
600         bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
601         default y if ALPHA_QEMU
602         default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
603         default n if !ALPHA_SRM && !ALPHA_GENERIC
604         default y if SMP
605         ---help---
606           The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
607           to sleep until the next interrupt.  This may reduce the power
608           consumed, and the heat produced by the computer.  However, it has
609           the side effect of making the cycle counter unreliable as a timing
610           device across the sleep.
611 
612           For emulation under QEMU, definitely say Y here, as we have other
613           mechanisms for measuring time than the cycle counter.
614 
615           For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
616           MILO, sleep mode is not supported so you might as well say N here.
617 
618           For SMP systems we cannot use the cycle counter for timing anyway,
619           so you might as well say Y here.
620 
621           If unsure, say N.
622 
623 config NODES_SHIFT
624         int
625         default "7"
626         depends on NEED_MULTIPLE_NODES
627 
628 # LARGE_VMALLOC is racy, if you *really* need it then fix it first
629 config ALPHA_LARGE_VMALLOC
630         bool
631         ---help---
632           Process creation and other aspects of virtual memory management can
633           be streamlined if we restrict the kernel to one PGD for all vmalloc
634           allocations.  This equates to about 8GB.
635 
636           Under normal circumstances, this is so far and above what is needed
637           as to be laughable.  However, there are certain applications (such
638           as benchmark-grade in-kernel web serving) that can make use of as
639           much vmalloc space as is available.
640 
641           Say N unless you know you need gobs and gobs of vmalloc space.
642 
643 config VERBOSE_MCHECK
644         bool "Verbose Machine Checks"
645 
646 config VERBOSE_MCHECK_ON
647         int "Verbose Printing Mode (0=off, 1=on, 2=all)"
648         depends on VERBOSE_MCHECK
649         default 1
650         ---help---
651           This option allows the default printing mode to be set, and then
652           possibly overridden by a boot command argument.
653 
654           For example, if one wanted the option of printing verbose
655           machine checks, but wanted the default to be as if verbose
656           machine check printing was turned off, then one would choose
657           the printing mode to be 0. Then, upon reboot, one could add
658           the boot command line "verbose_mcheck=1" to get the normal
659           verbose machine check printing, or "verbose_mcheck=2" to get
660           the maximum information available.
661 
662           Take the default (1) unless you want more control or more info.
663 
664 choice
665         prompt "Timer interrupt frequency (HZ)?"
666         default HZ_128 if ALPHA_QEMU
667         default HZ_1200 if ALPHA_RAWHIDE
668         default HZ_1024
669         ---help---
670           The frequency at which timer interrupts occur.  A high frequency
671           minimizes latency, whereas a low frequency minimizes overhead of
672           process accounting.  The later effect is especially significant
673           when being run under QEMU.
674 
675           Note that some Alpha hardware cannot change the interrupt frequency
676           of the timer.  If unsure, say 1024 (or 1200 for Rawhide).
677 
678         config HZ_32
679                 bool "32 Hz"
680         config HZ_64
681                 bool "64 Hz"
682         config HZ_128
683                 bool "128 Hz"
684         config HZ_256
685                 bool "256 Hz"
686         config HZ_1024
687                 bool "1024 Hz"
688         config HZ_1200
689                 bool "1200 Hz"
690 endchoice
691 
692 config HZ
693         int 
694         default 32 if HZ_32
695         default 64 if HZ_64
696         default 128 if HZ_128
697         default 256 if HZ_256
698         default 1200 if HZ_1200
699         default 1024
700 
701 source "drivers/pci/Kconfig"
702 source "drivers/eisa/Kconfig"
703 
704 source "drivers/pcmcia/Kconfig"
705 
706 config SRM_ENV
707         tristate "SRM environment through procfs"
708         depends on PROC_FS
709         ---help---
710           If you enable this option, a subdirectory inside /proc called
711           /proc/srm_environment will give you access to the all important
712           SRM environment variables (those which have a name) and also
713           to all others (by their internal number).
714 
715           SRM is something like a BIOS for Alpha machines. There are some
716           other such BIOSes, like AlphaBIOS, which this driver cannot
717           support (hey, that's not SRM!).
718 
719           Despite the fact that this driver doesn't work on all Alphas (but
720           only on those which have SRM as their firmware), it's save to
721           build it even if your particular machine doesn't know about SRM
722           (or if you intend to compile a generic kernel). It will simply
723           not create those subdirectory in /proc (and give you some warning,
724           of course).
725 
726           This driver is also available as a module and will be called
727           srm_env then.
728 
729 source "fs/Kconfig.binfmt"
730 
731 endmenu
732 
733 source "net/Kconfig"
734 
735 source "drivers/Kconfig"
736 
737 source "fs/Kconfig"
738 
739 source "arch/alpha/Kconfig.debug"
740 
741 # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
742 # but we also need it if VGA_HOSE is set
743 config DUMMY_CONSOLE
744         bool
745         depends on VGA_HOSE
746         default y
747 
748 source "security/Kconfig"
749 
750 source "crypto/Kconfig"
751 
752 source "lib/Kconfig"
753 

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