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