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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 HAVE_AOUT
  7         select HAVE_IDE
  8         select HAVE_OPROFILE
  9         select HAVE_PCSPKR_PLATFORM
 10         select HAVE_PERF_EVENTS
 11         select HAVE_DMA_ATTRS
 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 
 36 config 64BIT
 37         def_bool y
 38 
 39 config MMU
 40         bool
 41         default y
 42 
 43 config RWSEM_GENERIC_SPINLOCK
 44         bool
 45 
 46 config RWSEM_XCHGADD_ALGORITHM
 47         bool
 48         default y
 49 
 50 config ARCH_HAS_ILOG2_U32
 51         bool
 52         default n
 53 
 54 config ARCH_HAS_ILOG2_U64
 55         bool
 56         default n
 57 
 58 config GENERIC_CALIBRATE_DELAY
 59         bool
 60         default y
 61 
 62 config ZONE_DMA
 63         bool
 64         default y
 65 
 66 config ARCH_DMA_ADDR_T_64BIT
 67         def_bool y
 68 
 69 config NEED_DMA_MAP_STATE
 70        def_bool y
 71 
 72 config NEED_SG_DMA_LENGTH
 73         def_bool y
 74 
 75 config GENERIC_ISA_DMA
 76         bool
 77         default y
 78 
 79 config PGTABLE_LEVELS
 80         int
 81         default 3
 82 
 83 source "init/Kconfig"
 84 source "kernel/Kconfig.freezer"
 85 
 86 config AUDIT_ARCH
 87         bool
 88 
 89 menu "System setup"
 90 
 91 choice
 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 
133 config ALPHA_GENERIC
134         bool "Generic"
135         depends on TTY
136         help
137           A generic kernel will run on all supported Alpha hardware.
138 
139 config 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 
149 config ALPHA_XL
150         bool "Alpha-XL"
151         help
152           XL-233 and XL-266-based Alpha systems.
153 
154 config ALPHA_BOOK1
155         bool "AlphaBook1"
156         help
157           Dec AlphaBook1/Burns Alpha-based laptops.
158 
159 config ALPHA_AVANTI_CH
160         bool "Avanti"
161 
162 config 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 
170 config 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 
177 config 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 
187 config ALPHA_EB64P_CH
188         bool "EB64+"
189 
190 config 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 
199 config ALPHA_EB66P
200         bool "EB66+"
201         help
202           Later variant of the EB66 board.
203 
204 config 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 
210 config 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 
220 config 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 
226 config ALPHA_LYNX
227         bool "Lynx"
228         help
229           AlphaServer 2100A-based systems.
230 
231 config ALPHA_MARVEL
232         bool "Marvel"
233         help
234           AlphaServer ES47 / ES80 / GS1280 based on EV7.
235 
236 config ALPHA_MIATA
237         bool "Miata"
238         help
239           The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
240           or 600au).
241 
242 config ALPHA_MIKASA
243         bool "Mikasa"
244         help
245           AlphaServer 1000-based Alpha systems.
246 
247 config ALPHA_NAUTILUS
248         bool "Nautilus"
249         help
250           Alpha systems based on the AMD 751 & ALI 1543C chipsets.
251 
252 config ALPHA_NONAME_CH
253         bool "Noname"
254 
255 config ALPHA_NORITAKE
256         bool "Noritake"
257         help
258           AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
259           systems.
260 
261 config ALPHA_PC164
262         bool "PC164"
263 
264 config ALPHA_P2K
265         bool "Platform2000"
266 
267 config 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 
274 config 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 
280 config ALPHA_RX164
281         bool "RX164"
282 
283 config ALPHA_SX164
284         bool "SX164"
285 
286 config ALPHA_SABLE
287         bool "Sable"
288         help
289           Digital AlphaServer 2000 and 2100-based systems.
290 
291 config ALPHA_SHARK
292         bool "Shark"
293 
294 config ALPHA_TAKARA
295         bool "Takara"
296         help
297           Alpha 11164-based OEM single-board computer.
298 
299 config ALPHA_TITAN
300         bool "Titan"
301         help
302           AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
303 
304 config ALPHA_WILDFIRE
305         bool "Wildfire"
306         help
307           AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
308 
309 endchoice
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.
314 config 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 
324 config ISA_DMA_API
325         bool
326         default y
327 
328 config 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 
339 config PCI_DOMAINS
340         bool
341         default y
342 
343 config PCI_SYSCALL
344         def_bool PCI
345 
346 config IOMMU_HELPER
347         def_bool PCI
348 
349 config 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 
362 config 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 
367 config ALPHA_LCA
368         bool
369         depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
370         default y
371 
372 config 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 
377 config 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 
389 config 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 
393 config ALPHA_EV4
394         bool
395         default y if ALPHA_LYNX && !ALPHA_EV5
396 
397 config 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 
402 config 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 
406 config ALPHA_EV56
407         prompt "EV56 CPU (speed >= 333MHz)?"
408         depends on ALPHA_NORITAKE || ALPHA_PRIMO
409 
410 config ALPHA_EV56
411         prompt "EV56 CPU (speed >= 400MHz)?"
412         depends on ALPHA_RAWHIDE
413 
414 config 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 
420 config 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 
426 config ALPHA_GAMMA
427         bool
428         depends on ALPHA_LYNX
429         default y
430 
431 config ALPHA_T2
432         bool
433         depends on ALPHA_SABLE || ALPHA_LYNX
434         default y
435 
436 config ALPHA_PYXIS
437         bool
438         depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
439         default y
440 
441 config 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 
446 config ALPHA_TSUNAMI
447         bool
448         depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
449         default y
450 
451 config 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 
458 config ALPHA_MCPCIA
459         bool
460         depends on ALPHA_RAWHIDE
461         default y
462 
463 config ALPHA_POLARIS
464         bool
465         depends on ALPHA_RX164
466         default y
467 
468 config ALPHA_IRONGATE
469         bool
470         depends on ALPHA_NAUTILUS
471         default y
472 
473 config GENERIC_HWEIGHT
474         bool
475         default y if !ALPHA_EV67
476 
477 config 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 
486 config ALPHA_BROKEN_IRQ_MASK
487         bool
488         depends on ALPHA_GENERIC || ALPHA_PC164
489         default y
490 
491 config 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 
500 config 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 
514 config 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 
538 config 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 
543 config ARCH_MAY_HAVE_PC_FDC
544         def_bool y
545 
546 config 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 
565 config HAVE_DEC_LOCK
566         bool
567         depends on SMP
568         default y
569 
570 config 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 
580 config 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 
588 source "mm/Kconfig"
589 
590 config 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 
598 config 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 
622 config 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
628 config 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 
642 config VERBOSE_MCHECK
643         bool "Verbose Machine Checks"
644 
645 config 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 
663 choice
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"
689 endchoice
690 
691 config 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 
700 source "drivers/pci/Kconfig"
701 source "drivers/eisa/Kconfig"
702 
703 source "drivers/pcmcia/Kconfig"
704 
705 config 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 
728 source "fs/Kconfig.binfmt"
729 
730 endmenu
731 
732 source "net/Kconfig"
733 
734 source "drivers/Kconfig"
735 
736 source "fs/Kconfig"
737 
738 source "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
742 config DUMMY_CONSOLE
743         bool
744         depends on VGA_HOSE
745         default y
746 
747 source "security/Kconfig"
748 
749 source "crypto/Kconfig"
750 
751 source "lib/Kconfig"
752 

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