Kconfig 21 KB

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