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