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