Kconfig 52 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912
  1. config ARM
  2. bool
  3. default y
  4. select HAVE_AOUT
  5. select HAVE_DMA_API_DEBUG
  6. select HAVE_IDE
  7. select HAVE_MEMBLOCK
  8. select RTC_LIB
  9. select SYS_SUPPORTS_APM_EMULATION
  10. select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
  11. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  12. select HAVE_ARCH_KGDB
  13. select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
  14. select HAVE_KRETPROBES if (HAVE_KPROBES)
  15. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  16. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  17. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  18. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_IRQ_WORK
  24. select HAVE_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_REGS_AND_STACK_ACCESS_API
  27. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
  28. select HAVE_C_RECORDMCOUNT
  29. help
  30. The ARM series is a line of low-power-consumption RISC chip designs
  31. licensed by ARM Ltd and targeted at embedded applications and
  32. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  33. manufactured, but legacy ARM-based PC hardware remains popular in
  34. Europe. There is an ARM Linux project with a web page at
  35. <http://www.arm.linux.org.uk/>.
  36. config HAVE_PWM
  37. bool
  38. config MIGHT_HAVE_PCI
  39. bool
  40. config SYS_SUPPORTS_APM_EMULATION
  41. bool
  42. config HAVE_SCHED_CLOCK
  43. bool
  44. config GENERIC_GPIO
  45. bool
  46. config ARCH_USES_GETTIMEOFFSET
  47. bool
  48. default n
  49. config GENERIC_CLOCKEVENTS
  50. bool
  51. config GENERIC_CLOCKEVENTS_BROADCAST
  52. bool
  53. depends on GENERIC_CLOCKEVENTS
  54. default y if SMP
  55. config HAVE_TCM
  56. bool
  57. select GENERIC_ALLOCATOR
  58. config HAVE_PROC_CPU
  59. bool
  60. config NO_IOPORT
  61. bool
  62. config EISA
  63. bool
  64. ---help---
  65. The Extended Industry Standard Architecture (EISA) bus was
  66. developed as an open alternative to the IBM MicroChannel bus.
  67. The EISA bus provided some of the features of the IBM MicroChannel
  68. bus while maintaining backward compatibility with cards made for
  69. the older ISA bus. The EISA bus saw limited use between 1988 and
  70. 1995 when it was made obsolete by the PCI bus.
  71. Say Y here if you are building a kernel for an EISA-based machine.
  72. Otherwise, say N.
  73. config SBUS
  74. bool
  75. config MCA
  76. bool
  77. help
  78. MicroChannel Architecture is found in some IBM PS/2 machines and
  79. laptops. It is a bus system similar to PCI or ISA. See
  80. <file:Documentation/mca.txt> (and especially the web page given
  81. there) before attempting to build an MCA bus kernel.
  82. config GENERIC_HARDIRQS
  83. bool
  84. default y
  85. config STACKTRACE_SUPPORT
  86. bool
  87. default y
  88. config HAVE_LATENCYTOP_SUPPORT
  89. bool
  90. depends on !SMP
  91. default y
  92. config LOCKDEP_SUPPORT
  93. bool
  94. default y
  95. config TRACE_IRQFLAGS_SUPPORT
  96. bool
  97. default y
  98. config HARDIRQS_SW_RESEND
  99. bool
  100. default y
  101. config GENERIC_IRQ_PROBE
  102. bool
  103. default y
  104. config GENERIC_LOCKBREAK
  105. bool
  106. default y
  107. depends on SMP && PREEMPT
  108. config RWSEM_GENERIC_SPINLOCK
  109. bool
  110. default y
  111. config RWSEM_XCHGADD_ALGORITHM
  112. bool
  113. config ARCH_HAS_ILOG2_U32
  114. bool
  115. config ARCH_HAS_ILOG2_U64
  116. bool
  117. config ARCH_HAS_CPUFREQ
  118. bool
  119. help
  120. Internal node to signify that the ARCH has CPUFREQ support
  121. and that the relevant menu configurations are displayed for
  122. it.
  123. config ARCH_HAS_CPU_IDLE_WAIT
  124. def_bool y
  125. config GENERIC_HWEIGHT
  126. bool
  127. default y
  128. config GENERIC_CALIBRATE_DELAY
  129. bool
  130. default y
  131. config ARCH_MAY_HAVE_PC_FDC
  132. bool
  133. config ZONE_DMA
  134. bool
  135. config NEED_DMA_MAP_STATE
  136. def_bool y
  137. config GENERIC_ISA_DMA
  138. bool
  139. config FIQ
  140. bool
  141. config ARCH_MTD_XIP
  142. bool
  143. config GENERIC_HARDIRQS_NO__DO_IRQ
  144. def_bool y
  145. config ARM_L1_CACHE_SHIFT_6
  146. bool
  147. help
  148. Setting ARM L1 cache line size to 64 Bytes.
  149. config VECTORS_BASE
  150. hex
  151. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  152. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  153. default 0x00000000
  154. help
  155. The base address of exception vectors.
  156. source "init/Kconfig"
  157. source "kernel/Kconfig.freezer"
  158. menu "System Type"
  159. config MMU
  160. bool "MMU-based Paged Memory Management Support"
  161. default y
  162. help
  163. Select if you want MMU-based virtualised addressing space
  164. support by paged memory management. If unsure, say 'Y'.
  165. #
  166. # The "ARM system type" choice list is ordered alphabetically by option
  167. # text. Please add new entries in the option alphabetic order.
  168. #
  169. choice
  170. prompt "ARM system type"
  171. default ARCH_VERSATILE
  172. config ARCH_AAEC2000
  173. bool "Agilent AAEC-2000 based"
  174. select CPU_ARM920T
  175. select ARM_AMBA
  176. select HAVE_CLK
  177. select ARCH_USES_GETTIMEOFFSET
  178. help
  179. This enables support for systems based on the Agilent AAEC-2000
  180. config ARCH_INTEGRATOR
  181. bool "ARM Ltd. Integrator family"
  182. select ARM_AMBA
  183. select ARCH_HAS_CPUFREQ
  184. select CLKDEV_LOOKUP
  185. select ICST
  186. select GENERIC_CLOCKEVENTS
  187. select PLAT_VERSATILE
  188. help
  189. Support for ARM's Integrator platform.
  190. config ARCH_REALVIEW
  191. bool "ARM Ltd. RealView family"
  192. select ARM_AMBA
  193. select CLKDEV_LOOKUP
  194. select HAVE_SCHED_CLOCK
  195. select ICST
  196. select GENERIC_CLOCKEVENTS
  197. select ARCH_WANT_OPTIONAL_GPIOLIB
  198. select PLAT_VERSATILE
  199. select ARM_TIMER_SP804
  200. select GPIO_PL061 if GPIOLIB
  201. help
  202. This enables support for ARM Ltd RealView boards.
  203. config ARCH_VERSATILE
  204. bool "ARM Ltd. Versatile family"
  205. select ARM_AMBA
  206. select ARM_VIC
  207. select CLKDEV_LOOKUP
  208. select HAVE_SCHED_CLOCK
  209. select ICST
  210. select GENERIC_CLOCKEVENTS
  211. select ARCH_WANT_OPTIONAL_GPIOLIB
  212. select PLAT_VERSATILE
  213. select ARM_TIMER_SP804
  214. help
  215. This enables support for ARM Ltd Versatile board.
  216. config ARCH_VEXPRESS
  217. bool "ARM Ltd. Versatile Express family"
  218. select ARCH_WANT_OPTIONAL_GPIOLIB
  219. select ARM_AMBA
  220. select ARM_TIMER_SP804
  221. select CLKDEV_LOOKUP
  222. select GENERIC_CLOCKEVENTS
  223. select HAVE_CLK
  224. select HAVE_SCHED_CLOCK
  225. select ICST
  226. select PLAT_VERSATILE
  227. help
  228. This enables support for the ARM Ltd Versatile Express boards.
  229. config ARCH_AT91
  230. bool "Atmel AT91"
  231. select ARCH_REQUIRE_GPIOLIB
  232. select HAVE_CLK
  233. help
  234. This enables support for systems based on the Atmel AT91RM9200,
  235. AT91SAM9 and AT91CAP9 processors.
  236. config ARCH_BCMRING
  237. bool "Broadcom BCMRING"
  238. depends on MMU
  239. select CPU_V6
  240. select ARM_AMBA
  241. select CLKDEV_LOOKUP
  242. select GENERIC_CLOCKEVENTS
  243. select ARCH_WANT_OPTIONAL_GPIOLIB
  244. help
  245. Support for Broadcom's BCMRing platform.
  246. config ARCH_CLPS711X
  247. bool "Cirrus Logic CLPS711x/EP721x-based"
  248. select CPU_ARM720T
  249. select ARCH_USES_GETTIMEOFFSET
  250. help
  251. Support for Cirrus Logic 711x/721x based boards.
  252. config ARCH_CNS3XXX
  253. bool "Cavium Networks CNS3XXX family"
  254. select CPU_V6
  255. select GENERIC_CLOCKEVENTS
  256. select ARM_GIC
  257. select MIGHT_HAVE_PCI
  258. select PCI_DOMAINS if PCI
  259. help
  260. Support for Cavium Networks CNS3XXX platform.
  261. config ARCH_GEMINI
  262. bool "Cortina Systems Gemini"
  263. select CPU_FA526
  264. select ARCH_REQUIRE_GPIOLIB
  265. select ARCH_USES_GETTIMEOFFSET
  266. help
  267. Support for the Cortina Systems Gemini family SoCs
  268. config ARCH_EBSA110
  269. bool "EBSA-110"
  270. select CPU_SA110
  271. select ISA
  272. select NO_IOPORT
  273. select ARCH_USES_GETTIMEOFFSET
  274. help
  275. This is an evaluation board for the StrongARM processor available
  276. from Digital. It has limited hardware on-board, including an
  277. Ethernet interface, two PCMCIA sockets, two serial ports and a
  278. parallel port.
  279. config ARCH_EP93XX
  280. bool "EP93xx-based"
  281. select CPU_ARM920T
  282. select ARM_AMBA
  283. select ARM_VIC
  284. select CLKDEV_LOOKUP
  285. select ARCH_REQUIRE_GPIOLIB
  286. select ARCH_HAS_HOLES_MEMORYMODEL
  287. select ARCH_USES_GETTIMEOFFSET
  288. help
  289. This enables support for the Cirrus EP93xx series of CPUs.
  290. config ARCH_FOOTBRIDGE
  291. bool "FootBridge"
  292. select CPU_SA110
  293. select FOOTBRIDGE
  294. select ARCH_USES_GETTIMEOFFSET
  295. help
  296. Support for systems based on the DC21285 companion chip
  297. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  298. config ARCH_MXC
  299. bool "Freescale MXC/iMX-based"
  300. select GENERIC_CLOCKEVENTS
  301. select ARCH_REQUIRE_GPIOLIB
  302. select CLKDEV_LOOKUP
  303. help
  304. Support for Freescale MXC/iMX-based family of processors
  305. config ARCH_STMP3XXX
  306. bool "Freescale STMP3xxx"
  307. select CPU_ARM926T
  308. select CLKDEV_LOOKUP
  309. select ARCH_REQUIRE_GPIOLIB
  310. select GENERIC_CLOCKEVENTS
  311. select USB_ARCH_HAS_EHCI
  312. help
  313. Support for systems based on the Freescale 3xxx CPUs.
  314. config ARCH_NETX
  315. bool "Hilscher NetX based"
  316. select CPU_ARM926T
  317. select ARM_VIC
  318. select GENERIC_CLOCKEVENTS
  319. help
  320. This enables support for systems based on the Hilscher NetX Soc
  321. config ARCH_H720X
  322. bool "Hynix HMS720x-based"
  323. select CPU_ARM720T
  324. select ISA_DMA_API
  325. select ARCH_USES_GETTIMEOFFSET
  326. help
  327. This enables support for systems based on the Hynix HMS720x
  328. config ARCH_IOP13XX
  329. bool "IOP13xx-based"
  330. depends on MMU
  331. select CPU_XSC3
  332. select PLAT_IOP
  333. select PCI
  334. select ARCH_SUPPORTS_MSI
  335. select VMSPLIT_1G
  336. help
  337. Support for Intel's IOP13XX (XScale) family of processors.
  338. config ARCH_IOP32X
  339. bool "IOP32x-based"
  340. depends on MMU
  341. select CPU_XSCALE
  342. select PLAT_IOP
  343. select PCI
  344. select ARCH_REQUIRE_GPIOLIB
  345. help
  346. Support for Intel's 80219 and IOP32X (XScale) family of
  347. processors.
  348. config ARCH_IOP33X
  349. bool "IOP33x-based"
  350. depends on MMU
  351. select CPU_XSCALE
  352. select PLAT_IOP
  353. select PCI
  354. select ARCH_REQUIRE_GPIOLIB
  355. help
  356. Support for Intel's IOP33X (XScale) family of processors.
  357. config ARCH_IXP23XX
  358. bool "IXP23XX-based"
  359. depends on MMU
  360. select CPU_XSC3
  361. select PCI
  362. select ARCH_USES_GETTIMEOFFSET
  363. help
  364. Support for Intel's IXP23xx (XScale) family of processors.
  365. config ARCH_IXP2000
  366. bool "IXP2400/2800-based"
  367. depends on MMU
  368. select CPU_XSCALE
  369. select PCI
  370. select ARCH_USES_GETTIMEOFFSET
  371. help
  372. Support for Intel's IXP2400/2800 (XScale) family of processors.
  373. config ARCH_IXP4XX
  374. bool "IXP4xx-based"
  375. depends on MMU
  376. select CPU_XSCALE
  377. select GENERIC_GPIO
  378. select GENERIC_CLOCKEVENTS
  379. select HAVE_SCHED_CLOCK
  380. select MIGHT_HAVE_PCI
  381. select DMABOUNCE if PCI
  382. help
  383. Support for Intel's IXP4XX (XScale) family of processors.
  384. config ARCH_DOVE
  385. bool "Marvell Dove"
  386. select PCI
  387. select ARCH_REQUIRE_GPIOLIB
  388. select GENERIC_CLOCKEVENTS
  389. select PLAT_ORION
  390. help
  391. Support for the Marvell Dove SoC 88AP510
  392. config ARCH_KIRKWOOD
  393. bool "Marvell Kirkwood"
  394. select CPU_FEROCEON
  395. select PCI
  396. select ARCH_REQUIRE_GPIOLIB
  397. select GENERIC_CLOCKEVENTS
  398. select PLAT_ORION
  399. help
  400. Support for the following Marvell Kirkwood series SoCs:
  401. 88F6180, 88F6192 and 88F6281.
  402. config ARCH_LOKI
  403. bool "Marvell Loki (88RC8480)"
  404. select CPU_FEROCEON
  405. select GENERIC_CLOCKEVENTS
  406. select PLAT_ORION
  407. help
  408. Support for the Marvell Loki (88RC8480) SoC.
  409. config ARCH_LPC32XX
  410. bool "NXP LPC32XX"
  411. select CPU_ARM926T
  412. select ARCH_REQUIRE_GPIOLIB
  413. select HAVE_IDE
  414. select ARM_AMBA
  415. select USB_ARCH_HAS_OHCI
  416. select CLKDEV_LOOKUP
  417. select GENERIC_TIME
  418. select GENERIC_CLOCKEVENTS
  419. help
  420. Support for the NXP LPC32XX family of processors
  421. config ARCH_MV78XX0
  422. bool "Marvell MV78xx0"
  423. select CPU_FEROCEON
  424. select PCI
  425. select ARCH_REQUIRE_GPIOLIB
  426. select GENERIC_CLOCKEVENTS
  427. select PLAT_ORION
  428. help
  429. Support for the following Marvell MV78xx0 series SoCs:
  430. MV781x0, MV782x0.
  431. config ARCH_ORION5X
  432. bool "Marvell Orion"
  433. depends on MMU
  434. select CPU_FEROCEON
  435. select PCI
  436. select ARCH_REQUIRE_GPIOLIB
  437. select GENERIC_CLOCKEVENTS
  438. select PLAT_ORION
  439. help
  440. Support for the following Marvell Orion 5x series SoCs:
  441. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  442. Orion-2 (5281), Orion-1-90 (6183).
  443. config ARCH_MMP
  444. bool "Marvell PXA168/910/MMP2"
  445. depends on MMU
  446. select ARCH_REQUIRE_GPIOLIB
  447. select CLKDEV_LOOKUP
  448. select GENERIC_CLOCKEVENTS
  449. select HAVE_SCHED_CLOCK
  450. select TICK_ONESHOT
  451. select PLAT_PXA
  452. select SPARSE_IRQ
  453. help
  454. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  455. config ARCH_KS8695
  456. bool "Micrel/Kendin KS8695"
  457. select CPU_ARM922T
  458. select ARCH_REQUIRE_GPIOLIB
  459. select ARCH_USES_GETTIMEOFFSET
  460. help
  461. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  462. System-on-Chip devices.
  463. config ARCH_NS9XXX
  464. bool "NetSilicon NS9xxx"
  465. select CPU_ARM926T
  466. select GENERIC_GPIO
  467. select GENERIC_CLOCKEVENTS
  468. select HAVE_CLK
  469. help
  470. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  471. System.
  472. <http://www.digi.com/products/microprocessors/index.jsp>
  473. config ARCH_W90X900
  474. bool "Nuvoton W90X900 CPU"
  475. select CPU_ARM926T
  476. select ARCH_REQUIRE_GPIOLIB
  477. select CLKDEV_LOOKUP
  478. select GENERIC_CLOCKEVENTS
  479. help
  480. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  481. At present, the w90x900 has been renamed nuc900, regarding
  482. the ARM series product line, you can login the following
  483. link address to know more.
  484. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  485. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  486. config ARCH_NUC93X
  487. bool "Nuvoton NUC93X CPU"
  488. select CPU_ARM926T
  489. select CLKDEV_LOOKUP
  490. help
  491. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  492. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  493. config ARCH_TEGRA
  494. bool "NVIDIA Tegra"
  495. select CLKDEV_LOOKUP
  496. select GENERIC_TIME
  497. select GENERIC_CLOCKEVENTS
  498. select GENERIC_GPIO
  499. select HAVE_CLK
  500. select HAVE_SCHED_CLOCK
  501. select ARCH_HAS_BARRIERS if CACHE_L2X0
  502. select ARCH_HAS_CPUFREQ
  503. help
  504. This enables support for NVIDIA Tegra based systems (Tegra APX,
  505. Tegra 6xx and Tegra 2 series).
  506. config ARCH_PNX4008
  507. bool "Philips Nexperia PNX4008 Mobile"
  508. select CPU_ARM926T
  509. select CLKDEV_LOOKUP
  510. select ARCH_USES_GETTIMEOFFSET
  511. help
  512. This enables support for Philips PNX4008 mobile platform.
  513. config ARCH_PXA
  514. bool "PXA2xx/PXA3xx-based"
  515. depends on MMU
  516. select ARCH_MTD_XIP
  517. select ARCH_HAS_CPUFREQ
  518. select CLKDEV_LOOKUP
  519. select ARCH_REQUIRE_GPIOLIB
  520. select GENERIC_CLOCKEVENTS
  521. select HAVE_SCHED_CLOCK
  522. select TICK_ONESHOT
  523. select PLAT_PXA
  524. select SPARSE_IRQ
  525. help
  526. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  527. config ARCH_MSM
  528. bool "Qualcomm MSM"
  529. select HAVE_CLK
  530. select GENERIC_CLOCKEVENTS
  531. select ARCH_REQUIRE_GPIOLIB
  532. help
  533. Support for Qualcomm MSM/QSD based systems. This runs on the
  534. apps processor of the MSM/QSD and depends on a shared memory
  535. interface to the modem processor which runs the baseband
  536. stack and controls some vital subsystems
  537. (clock and power control, etc).
  538. config ARCH_SHMOBILE
  539. bool "Renesas SH-Mobile"
  540. help
  541. Support for Renesas's SH-Mobile ARM platforms
  542. config ARCH_RPC
  543. bool "RiscPC"
  544. select ARCH_ACORN
  545. select FIQ
  546. select TIMER_ACORN
  547. select ARCH_MAY_HAVE_PC_FDC
  548. select HAVE_PATA_PLATFORM
  549. select ISA_DMA_API
  550. select NO_IOPORT
  551. select ARCH_SPARSEMEM_ENABLE
  552. select ARCH_USES_GETTIMEOFFSET
  553. help
  554. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  555. CD-ROM interface, serial and parallel port, and the floppy drive.
  556. config ARCH_SA1100
  557. bool "SA1100-based"
  558. select CPU_SA1100
  559. select ISA
  560. select ARCH_SPARSEMEM_ENABLE
  561. select ARCH_MTD_XIP
  562. select ARCH_HAS_CPUFREQ
  563. select CPU_FREQ
  564. select GENERIC_CLOCKEVENTS
  565. select HAVE_CLK
  566. select HAVE_SCHED_CLOCK
  567. select TICK_ONESHOT
  568. select ARCH_REQUIRE_GPIOLIB
  569. help
  570. Support for StrongARM 11x0 based boards.
  571. config ARCH_S3C2410
  572. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  573. select GENERIC_GPIO
  574. select ARCH_HAS_CPUFREQ
  575. select HAVE_CLK
  576. select ARCH_USES_GETTIMEOFFSET
  577. select HAVE_S3C2410_I2C if I2C
  578. help
  579. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  580. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  581. the Samsung SMDK2410 development board (and derivatives).
  582. Note, the S3C2416 and the S3C2450 are so close that they even share
  583. the same SoC ID code. This means that there is no seperate machine
  584. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  585. config ARCH_S3C64XX
  586. bool "Samsung S3C64XX"
  587. select PLAT_SAMSUNG
  588. select CPU_V6
  589. select ARM_VIC
  590. select HAVE_CLK
  591. select NO_IOPORT
  592. select ARCH_USES_GETTIMEOFFSET
  593. select ARCH_HAS_CPUFREQ
  594. select ARCH_REQUIRE_GPIOLIB
  595. select SAMSUNG_CLKSRC
  596. select SAMSUNG_IRQ_VIC_TIMER
  597. select SAMSUNG_IRQ_UART
  598. select S3C_GPIO_TRACK
  599. select S3C_GPIO_PULL_UPDOWN
  600. select S3C_GPIO_CFG_S3C24XX
  601. select S3C_GPIO_CFG_S3C64XX
  602. select S3C_DEV_NAND
  603. select USB_ARCH_HAS_OHCI
  604. select SAMSUNG_GPIOLIB_4BIT
  605. select HAVE_S3C2410_I2C if I2C
  606. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  607. help
  608. Samsung S3C64XX series based systems
  609. config ARCH_S5P64X0
  610. bool "Samsung S5P6440 S5P6450"
  611. select CPU_V6
  612. select GENERIC_GPIO
  613. select HAVE_CLK
  614. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  615. select ARCH_USES_GETTIMEOFFSET
  616. select HAVE_S3C2410_I2C if I2C
  617. select HAVE_S3C_RTC if RTC_CLASS
  618. help
  619. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  620. SMDK6450.
  621. config ARCH_S5P6442
  622. bool "Samsung S5P6442"
  623. select CPU_V6
  624. select GENERIC_GPIO
  625. select HAVE_CLK
  626. select ARCH_USES_GETTIMEOFFSET
  627. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  628. help
  629. Samsung S5P6442 CPU based systems
  630. config ARCH_S5PC100
  631. bool "Samsung S5PC100"
  632. select GENERIC_GPIO
  633. select HAVE_CLK
  634. select CPU_V7
  635. select ARM_L1_CACHE_SHIFT_6
  636. select ARCH_USES_GETTIMEOFFSET
  637. select HAVE_S3C2410_I2C if I2C
  638. select HAVE_S3C_RTC if RTC_CLASS
  639. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  640. help
  641. Samsung S5PC100 series based systems
  642. config ARCH_S5PV210
  643. bool "Samsung S5PV210/S5PC110"
  644. select CPU_V7
  645. select ARCH_SPARSEMEM_ENABLE
  646. select GENERIC_GPIO
  647. select HAVE_CLK
  648. select ARM_L1_CACHE_SHIFT_6
  649. select ARCH_HAS_CPUFREQ
  650. select ARCH_USES_GETTIMEOFFSET
  651. select HAVE_S3C2410_I2C if I2C
  652. select HAVE_S3C_RTC if RTC_CLASS
  653. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  654. help
  655. Samsung S5PV210/S5PC110 series based systems
  656. config ARCH_S5PV310
  657. bool "Samsung S5PV310/S5PC210"
  658. select CPU_V7
  659. select ARCH_SPARSEMEM_ENABLE
  660. select GENERIC_GPIO
  661. select HAVE_CLK
  662. select GENERIC_CLOCKEVENTS
  663. select HAVE_S3C_RTC if RTC_CLASS
  664. select HAVE_S3C2410_I2C if I2C
  665. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  666. help
  667. Samsung S5PV310 series based systems
  668. config ARCH_SHARK
  669. bool "Shark"
  670. select CPU_SA110
  671. select ISA
  672. select ISA_DMA
  673. select ZONE_DMA
  674. select PCI
  675. select ARCH_USES_GETTIMEOFFSET
  676. help
  677. Support for the StrongARM based Digital DNARD machine, also known
  678. as "Shark" (<http://www.shark-linux.de/shark.html>).
  679. config ARCH_TCC_926
  680. bool "Telechips TCC ARM926-based systems"
  681. select CPU_ARM926T
  682. select HAVE_CLK
  683. select CLKDEV_LOOKUP
  684. select GENERIC_CLOCKEVENTS
  685. help
  686. Support for Telechips TCC ARM926-based systems.
  687. config ARCH_LH7A40X
  688. bool "Sharp LH7A40X"
  689. select CPU_ARM922T
  690. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  691. select ARCH_USES_GETTIMEOFFSET
  692. help
  693. Say Y here for systems based on one of the Sharp LH7A40X
  694. System on a Chip processors. These CPUs include an ARM922T
  695. core with a wide array of integrated devices for
  696. hand-held and low-power applications.
  697. config ARCH_U300
  698. bool "ST-Ericsson U300 Series"
  699. depends on MMU
  700. select CPU_ARM926T
  701. select HAVE_SCHED_CLOCK
  702. select HAVE_TCM
  703. select ARM_AMBA
  704. select ARM_VIC
  705. select GENERIC_CLOCKEVENTS
  706. select CLKDEV_LOOKUP
  707. select GENERIC_GPIO
  708. help
  709. Support for ST-Ericsson U300 series mobile platforms.
  710. config ARCH_U8500
  711. bool "ST-Ericsson U8500 Series"
  712. select CPU_V7
  713. select ARM_AMBA
  714. select GENERIC_CLOCKEVENTS
  715. select CLKDEV_LOOKUP
  716. select ARCH_REQUIRE_GPIOLIB
  717. help
  718. Support for ST-Ericsson's Ux500 architecture
  719. config ARCH_NOMADIK
  720. bool "STMicroelectronics Nomadik"
  721. select ARM_AMBA
  722. select ARM_VIC
  723. select CPU_ARM926T
  724. select CLKDEV_LOOKUP
  725. select GENERIC_CLOCKEVENTS
  726. select ARCH_REQUIRE_GPIOLIB
  727. help
  728. Support for the Nomadik platform by ST-Ericsson
  729. config ARCH_DAVINCI
  730. bool "TI DaVinci"
  731. select GENERIC_CLOCKEVENTS
  732. select ARCH_REQUIRE_GPIOLIB
  733. select ZONE_DMA
  734. select HAVE_IDE
  735. select CLKDEV_LOOKUP
  736. select GENERIC_ALLOCATOR
  737. select ARCH_HAS_HOLES_MEMORYMODEL
  738. help
  739. Support for TI's DaVinci platform.
  740. config ARCH_OMAP
  741. bool "TI OMAP"
  742. select HAVE_CLK
  743. select ARCH_REQUIRE_GPIOLIB
  744. select ARCH_HAS_CPUFREQ
  745. select GENERIC_CLOCKEVENTS
  746. select HAVE_SCHED_CLOCK
  747. select ARCH_HAS_HOLES_MEMORYMODEL
  748. help
  749. Support for TI's OMAP platform (OMAP1/2/3/4).
  750. config PLAT_SPEAR
  751. bool "ST SPEAr"
  752. select ARM_AMBA
  753. select ARCH_REQUIRE_GPIOLIB
  754. select CLKDEV_LOOKUP
  755. select GENERIC_CLOCKEVENTS
  756. select HAVE_CLK
  757. help
  758. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  759. endchoice
  760. #
  761. # This is sorted alphabetically by mach-* pathname. However, plat-*
  762. # Kconfigs may be included either alphabetically (according to the
  763. # plat- suffix) or along side the corresponding mach-* source.
  764. #
  765. source "arch/arm/mach-aaec2000/Kconfig"
  766. source "arch/arm/mach-at91/Kconfig"
  767. source "arch/arm/mach-bcmring/Kconfig"
  768. source "arch/arm/mach-clps711x/Kconfig"
  769. source "arch/arm/mach-cns3xxx/Kconfig"
  770. source "arch/arm/mach-davinci/Kconfig"
  771. source "arch/arm/mach-dove/Kconfig"
  772. source "arch/arm/mach-ep93xx/Kconfig"
  773. source "arch/arm/mach-footbridge/Kconfig"
  774. source "arch/arm/mach-gemini/Kconfig"
  775. source "arch/arm/mach-h720x/Kconfig"
  776. source "arch/arm/mach-integrator/Kconfig"
  777. source "arch/arm/mach-iop32x/Kconfig"
  778. source "arch/arm/mach-iop33x/Kconfig"
  779. source "arch/arm/mach-iop13xx/Kconfig"
  780. source "arch/arm/mach-ixp4xx/Kconfig"
  781. source "arch/arm/mach-ixp2000/Kconfig"
  782. source "arch/arm/mach-ixp23xx/Kconfig"
  783. source "arch/arm/mach-kirkwood/Kconfig"
  784. source "arch/arm/mach-ks8695/Kconfig"
  785. source "arch/arm/mach-lh7a40x/Kconfig"
  786. source "arch/arm/mach-loki/Kconfig"
  787. source "arch/arm/mach-lpc32xx/Kconfig"
  788. source "arch/arm/mach-msm/Kconfig"
  789. source "arch/arm/mach-mv78xx0/Kconfig"
  790. source "arch/arm/plat-mxc/Kconfig"
  791. source "arch/arm/mach-netx/Kconfig"
  792. source "arch/arm/mach-nomadik/Kconfig"
  793. source "arch/arm/plat-nomadik/Kconfig"
  794. source "arch/arm/mach-ns9xxx/Kconfig"
  795. source "arch/arm/mach-nuc93x/Kconfig"
  796. source "arch/arm/plat-omap/Kconfig"
  797. source "arch/arm/mach-omap1/Kconfig"
  798. source "arch/arm/mach-omap2/Kconfig"
  799. source "arch/arm/mach-orion5x/Kconfig"
  800. source "arch/arm/mach-pxa/Kconfig"
  801. source "arch/arm/plat-pxa/Kconfig"
  802. source "arch/arm/mach-mmp/Kconfig"
  803. source "arch/arm/mach-realview/Kconfig"
  804. source "arch/arm/mach-sa1100/Kconfig"
  805. source "arch/arm/plat-samsung/Kconfig"
  806. source "arch/arm/plat-s3c24xx/Kconfig"
  807. source "arch/arm/plat-s5p/Kconfig"
  808. source "arch/arm/plat-spear/Kconfig"
  809. source "arch/arm/plat-tcc/Kconfig"
  810. if ARCH_S3C2410
  811. source "arch/arm/mach-s3c2400/Kconfig"
  812. source "arch/arm/mach-s3c2410/Kconfig"
  813. source "arch/arm/mach-s3c2412/Kconfig"
  814. source "arch/arm/mach-s3c2416/Kconfig"
  815. source "arch/arm/mach-s3c2440/Kconfig"
  816. source "arch/arm/mach-s3c2443/Kconfig"
  817. endif
  818. if ARCH_S3C64XX
  819. source "arch/arm/mach-s3c64xx/Kconfig"
  820. endif
  821. source "arch/arm/mach-s5p64x0/Kconfig"
  822. source "arch/arm/mach-s5p6442/Kconfig"
  823. source "arch/arm/mach-s5pc100/Kconfig"
  824. source "arch/arm/mach-s5pv210/Kconfig"
  825. source "arch/arm/mach-s5pv310/Kconfig"
  826. source "arch/arm/mach-shmobile/Kconfig"
  827. source "arch/arm/plat-stmp3xxx/Kconfig"
  828. source "arch/arm/mach-tegra/Kconfig"
  829. source "arch/arm/mach-u300/Kconfig"
  830. source "arch/arm/mach-ux500/Kconfig"
  831. source "arch/arm/mach-versatile/Kconfig"
  832. source "arch/arm/mach-vexpress/Kconfig"
  833. source "arch/arm/mach-w90x900/Kconfig"
  834. # Definitions to make life easier
  835. config ARCH_ACORN
  836. bool
  837. config PLAT_IOP
  838. bool
  839. select GENERIC_CLOCKEVENTS
  840. select HAVE_SCHED_CLOCK
  841. config PLAT_ORION
  842. bool
  843. select HAVE_SCHED_CLOCK
  844. config PLAT_PXA
  845. bool
  846. config PLAT_VERSATILE
  847. bool
  848. config ARM_TIMER_SP804
  849. bool
  850. source arch/arm/mm/Kconfig
  851. config IWMMXT
  852. bool "Enable iWMMXt support"
  853. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  854. default y if PXA27x || PXA3xx || ARCH_MMP
  855. help
  856. Enable support for iWMMXt context switching at run time if
  857. running on a CPU that supports it.
  858. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  859. config XSCALE_PMU
  860. bool
  861. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  862. default y
  863. config CPU_HAS_PMU
  864. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  865. (!ARCH_OMAP3 || OMAP3_EMU)
  866. default y
  867. bool
  868. config MULTI_IRQ_HANDLER
  869. bool
  870. help
  871. Allow each machine to specify it's own IRQ handler at run time.
  872. if !MMU
  873. source "arch/arm/Kconfig-nommu"
  874. endif
  875. config ARM_ERRATA_411920
  876. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  877. depends on CPU_V6
  878. help
  879. Invalidation of the Instruction Cache operation can
  880. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  881. It does not affect the MPCore. This option enables the ARM Ltd.
  882. recommended workaround.
  883. config ARM_ERRATA_430973
  884. bool "ARM errata: Stale prediction on replaced interworking branch"
  885. depends on CPU_V7
  886. help
  887. This option enables the workaround for the 430973 Cortex-A8
  888. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  889. interworking branch is replaced with another code sequence at the
  890. same virtual address, whether due to self-modifying code or virtual
  891. to physical address re-mapping, Cortex-A8 does not recover from the
  892. stale interworking branch prediction. This results in Cortex-A8
  893. executing the new code sequence in the incorrect ARM or Thumb state.
  894. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  895. and also flushes the branch target cache at every context switch.
  896. Note that setting specific bits in the ACTLR register may not be
  897. available in non-secure mode.
  898. config ARM_ERRATA_458693
  899. bool "ARM errata: Processor deadlock when a false hazard is created"
  900. depends on CPU_V7
  901. help
  902. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  903. erratum. For very specific sequences of memory operations, it is
  904. possible for a hazard condition intended for a cache line to instead
  905. be incorrectly associated with a different cache line. This false
  906. hazard might then cause a processor deadlock. The workaround enables
  907. the L1 caching of the NEON accesses and disables the PLD instruction
  908. in the ACTLR register. Note that setting specific bits in the ACTLR
  909. register may not be available in non-secure mode.
  910. config ARM_ERRATA_460075
  911. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  912. depends on CPU_V7
  913. help
  914. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  915. erratum. Any asynchronous access to the L2 cache may encounter a
  916. situation in which recent store transactions to the L2 cache are lost
  917. and overwritten with stale memory contents from external memory. The
  918. workaround disables the write-allocate mode for the L2 cache via the
  919. ACTLR register. Note that setting specific bits in the ACTLR register
  920. may not be available in non-secure mode.
  921. config ARM_ERRATA_742230
  922. bool "ARM errata: DMB operation may be faulty"
  923. depends on CPU_V7 && SMP
  924. help
  925. This option enables the workaround for the 742230 Cortex-A9
  926. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  927. between two write operations may not ensure the correct visibility
  928. ordering of the two writes. This workaround sets a specific bit in
  929. the diagnostic register of the Cortex-A9 which causes the DMB
  930. instruction to behave as a DSB, ensuring the correct behaviour of
  931. the two writes.
  932. config ARM_ERRATA_742231
  933. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  934. depends on CPU_V7 && SMP
  935. help
  936. This option enables the workaround for the 742231 Cortex-A9
  937. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  938. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  939. accessing some data located in the same cache line, may get corrupted
  940. data due to bad handling of the address hazard when the line gets
  941. replaced from one of the CPUs at the same time as another CPU is
  942. accessing it. This workaround sets specific bits in the diagnostic
  943. register of the Cortex-A9 which reduces the linefill issuing
  944. capabilities of the processor.
  945. config PL310_ERRATA_588369
  946. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  947. depends on CACHE_L2X0 && ARCH_OMAP4
  948. help
  949. The PL310 L2 cache controller implements three types of Clean &
  950. Invalidate maintenance operations: by Physical Address
  951. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  952. They are architecturally defined to behave as the execution of a
  953. clean operation followed immediately by an invalidate operation,
  954. both performing to the same memory location. This functionality
  955. is not correctly implemented in PL310 as clean lines are not
  956. invalidated as a result of these operations. Note that this errata
  957. uses Texas Instrument's secure monitor api.
  958. config ARM_ERRATA_720789
  959. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  960. depends on CPU_V7 && SMP
  961. help
  962. This option enables the workaround for the 720789 Cortex-A9 (prior to
  963. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  964. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  965. As a consequence of this erratum, some TLB entries which should be
  966. invalidated are not, resulting in an incoherency in the system page
  967. tables. The workaround changes the TLB flushing routines to invalidate
  968. entries regardless of the ASID.
  969. config ARM_ERRATA_743622
  970. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  971. depends on CPU_V7
  972. help
  973. This option enables the workaround for the 743622 Cortex-A9
  974. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  975. optimisation in the Cortex-A9 Store Buffer may lead to data
  976. corruption. This workaround sets a specific bit in the diagnostic
  977. register of the Cortex-A9 which disables the Store Buffer
  978. optimisation, preventing the defect from occurring. This has no
  979. visible impact on the overall performance or power consumption of the
  980. processor.
  981. endmenu
  982. source "arch/arm/common/Kconfig"
  983. menu "Bus support"
  984. config ARM_AMBA
  985. bool
  986. config ISA
  987. bool
  988. help
  989. Find out whether you have ISA slots on your motherboard. ISA is the
  990. name of a bus system, i.e. the way the CPU talks to the other stuff
  991. inside your box. Other bus systems are PCI, EISA, MicroChannel
  992. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  993. newer boards don't support it. If you have ISA, say Y, otherwise N.
  994. # Select ISA DMA controller support
  995. config ISA_DMA
  996. bool
  997. select ISA_DMA_API
  998. # Select ISA DMA interface
  999. config ISA_DMA_API
  1000. bool
  1001. config PCI
  1002. bool "PCI support" if MIGHT_HAVE_PCI
  1003. help
  1004. Find out whether you have a PCI motherboard. PCI is the name of a
  1005. bus system, i.e. the way the CPU talks to the other stuff inside
  1006. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1007. VESA. If you have PCI, say Y, otherwise N.
  1008. config PCI_DOMAINS
  1009. bool
  1010. depends on PCI
  1011. config PCI_NANOENGINE
  1012. bool "BSE nanoEngine PCI support"
  1013. depends on SA1100_NANOENGINE
  1014. help
  1015. Enable PCI on the BSE nanoEngine board.
  1016. config PCI_SYSCALL
  1017. def_bool PCI
  1018. # Select the host bridge type
  1019. config PCI_HOST_VIA82C505
  1020. bool
  1021. depends on PCI && ARCH_SHARK
  1022. default y
  1023. config PCI_HOST_ITE8152
  1024. bool
  1025. depends on PCI && MACH_ARMCORE
  1026. default y
  1027. select DMABOUNCE
  1028. source "drivers/pci/Kconfig"
  1029. source "drivers/pcmcia/Kconfig"
  1030. endmenu
  1031. menu "Kernel Features"
  1032. source "kernel/time/Kconfig"
  1033. config SMP
  1034. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  1035. depends on EXPERIMENTAL
  1036. depends on GENERIC_CLOCKEVENTS
  1037. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1038. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1039. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1040. ARCH_MSM_SCORPIONMP
  1041. select USE_GENERIC_SMP_HELPERS
  1042. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1043. help
  1044. This enables support for systems with more than one CPU. If you have
  1045. a system with only one CPU, like most personal computers, say N. If
  1046. you have a system with more than one CPU, say Y.
  1047. If you say N here, the kernel will run on single and multiprocessor
  1048. machines, but will use only one CPU of a multiprocessor machine. If
  1049. you say Y here, the kernel will run on many, but not all, single
  1050. processor machines. On a single processor machine, the kernel will
  1051. run faster if you say N here.
  1052. See also <file:Documentation/i386/IO-APIC.txt>,
  1053. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1054. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1055. If you don't know what to do here, say N.
  1056. config SMP_ON_UP
  1057. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1058. depends on EXPERIMENTAL
  1059. depends on SMP && !XIP
  1060. default y
  1061. help
  1062. SMP kernels contain instructions which fail on non-SMP processors.
  1063. Enabling this option allows the kernel to modify itself to make
  1064. these instructions safe. Disabling it allows about 1K of space
  1065. savings.
  1066. If you don't know what to do here, say Y.
  1067. config HAVE_ARM_SCU
  1068. bool
  1069. depends on SMP
  1070. help
  1071. This option enables support for the ARM system coherency unit
  1072. config HAVE_ARM_TWD
  1073. bool
  1074. depends on SMP
  1075. select TICK_ONESHOT
  1076. help
  1077. This options enables support for the ARM timer and watchdog unit
  1078. choice
  1079. prompt "Memory split"
  1080. default VMSPLIT_3G
  1081. help
  1082. Select the desired split between kernel and user memory.
  1083. If you are not absolutely sure what you are doing, leave this
  1084. option alone!
  1085. config VMSPLIT_3G
  1086. bool "3G/1G user/kernel split"
  1087. config VMSPLIT_2G
  1088. bool "2G/2G user/kernel split"
  1089. config VMSPLIT_1G
  1090. bool "1G/3G user/kernel split"
  1091. endchoice
  1092. config PAGE_OFFSET
  1093. hex
  1094. default 0x40000000 if VMSPLIT_1G
  1095. default 0x80000000 if VMSPLIT_2G
  1096. default 0xC0000000
  1097. config NR_CPUS
  1098. int "Maximum number of CPUs (2-32)"
  1099. range 2 32
  1100. depends on SMP
  1101. default "4"
  1102. config HOTPLUG_CPU
  1103. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1104. depends on SMP && HOTPLUG && EXPERIMENTAL
  1105. depends on !ARCH_MSM
  1106. help
  1107. Say Y here to experiment with turning CPUs off and on. CPUs
  1108. can be controlled through /sys/devices/system/cpu.
  1109. config LOCAL_TIMERS
  1110. bool "Use local timer interrupts"
  1111. depends on SMP
  1112. default y
  1113. select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
  1114. help
  1115. Enable support for local timers on SMP platforms, rather then the
  1116. legacy IPI broadcast method. Local timers allows the system
  1117. accounting to be spread across the timer interval, preventing a
  1118. "thundering herd" at every timer tick.
  1119. source kernel/Kconfig.preempt
  1120. config HZ
  1121. int
  1122. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1123. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1124. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1125. default AT91_TIMER_HZ if ARCH_AT91
  1126. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1127. default 100
  1128. config THUMB2_KERNEL
  1129. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1130. depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
  1131. select AEABI
  1132. select ARM_ASM_UNIFIED
  1133. help
  1134. By enabling this option, the kernel will be compiled in
  1135. Thumb-2 mode. A compiler/assembler that understand the unified
  1136. ARM-Thumb syntax is needed.
  1137. If unsure, say N.
  1138. config ARM_ASM_UNIFIED
  1139. bool
  1140. config AEABI
  1141. bool "Use the ARM EABI to compile the kernel"
  1142. help
  1143. This option allows for the kernel to be compiled using the latest
  1144. ARM ABI (aka EABI). This is only useful if you are using a user
  1145. space environment that is also compiled with EABI.
  1146. Since there are major incompatibilities between the legacy ABI and
  1147. EABI, especially with regard to structure member alignment, this
  1148. option also changes the kernel syscall calling convention to
  1149. disambiguate both ABIs and allow for backward compatibility support
  1150. (selected with CONFIG_OABI_COMPAT).
  1151. To use this you need GCC version 4.0.0 or later.
  1152. config OABI_COMPAT
  1153. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1154. depends on AEABI && EXPERIMENTAL
  1155. default y
  1156. help
  1157. This option preserves the old syscall interface along with the
  1158. new (ARM EABI) one. It also provides a compatibility layer to
  1159. intercept syscalls that have structure arguments which layout
  1160. in memory differs between the legacy ABI and the new ARM EABI
  1161. (only for non "thumb" binaries). This option adds a tiny
  1162. overhead to all syscalls and produces a slightly larger kernel.
  1163. If you know you'll be using only pure EABI user space then you
  1164. can say N here. If this option is not selected and you attempt
  1165. to execute a legacy ABI binary then the result will be
  1166. UNPREDICTABLE (in fact it can be predicted that it won't work
  1167. at all). If in doubt say Y.
  1168. config ARCH_HAS_HOLES_MEMORYMODEL
  1169. bool
  1170. config ARCH_SPARSEMEM_ENABLE
  1171. bool
  1172. config ARCH_SPARSEMEM_DEFAULT
  1173. def_bool ARCH_SPARSEMEM_ENABLE
  1174. config ARCH_SELECT_MEMORY_MODEL
  1175. def_bool ARCH_SPARSEMEM_ENABLE
  1176. config HIGHMEM
  1177. bool "High Memory Support (EXPERIMENTAL)"
  1178. depends on MMU && EXPERIMENTAL
  1179. help
  1180. The address space of ARM processors is only 4 Gigabytes large
  1181. and it has to accommodate user address space, kernel address
  1182. space as well as some memory mapped IO. That means that, if you
  1183. have a large amount of physical memory and/or IO, not all of the
  1184. memory can be "permanently mapped" by the kernel. The physical
  1185. memory that is not permanently mapped is called "high memory".
  1186. Depending on the selected kernel/user memory split, minimum
  1187. vmalloc space and actual amount of RAM, you may not need this
  1188. option which should result in a slightly faster kernel.
  1189. If unsure, say n.
  1190. config HIGHPTE
  1191. bool "Allocate 2nd-level pagetables from highmem"
  1192. depends on HIGHMEM
  1193. depends on !OUTER_CACHE
  1194. config HW_PERF_EVENTS
  1195. bool "Enable hardware performance counter support for perf events"
  1196. depends on PERF_EVENTS && CPU_HAS_PMU
  1197. default y
  1198. help
  1199. Enable hardware performance counter support for perf events. If
  1200. disabled, perf events will use software events only.
  1201. config SPARSE_IRQ
  1202. def_bool n
  1203. help
  1204. This enables support for sparse irqs. This is useful in general
  1205. as most CPUs have a fairly sparse array of IRQ vectors, which
  1206. the irq_desc then maps directly on to. Systems with a high
  1207. number of off-chip IRQs will want to treat this as
  1208. experimental until they have been independently verified.
  1209. source "mm/Kconfig"
  1210. config FORCE_MAX_ZONEORDER
  1211. int "Maximum zone order" if ARCH_SHMOBILE
  1212. range 11 64 if ARCH_SHMOBILE
  1213. default "9" if SA1111
  1214. default "11"
  1215. help
  1216. The kernel memory allocator divides physically contiguous memory
  1217. blocks into "zones", where each zone is a power of two number of
  1218. pages. This option selects the largest power of two that the kernel
  1219. keeps in the memory allocator. If you need to allocate very large
  1220. blocks of physically contiguous memory, then you may need to
  1221. increase this value.
  1222. This config option is actually maximum order plus one. For example,
  1223. a value of 11 means that the largest free memory block is 2^10 pages.
  1224. config LEDS
  1225. bool "Timer and CPU usage LEDs"
  1226. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1227. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1228. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1229. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1230. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1231. ARCH_AT91 || ARCH_DAVINCI || \
  1232. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1233. help
  1234. If you say Y here, the LEDs on your machine will be used
  1235. to provide useful information about your current system status.
  1236. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1237. be able to select which LEDs are active using the options below. If
  1238. you are compiling a kernel for the EBSA-110 or the LART however, the
  1239. red LED will simply flash regularly to indicate that the system is
  1240. still functional. It is safe to say Y here if you have a CATS
  1241. system, but the driver will do nothing.
  1242. config LEDS_TIMER
  1243. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1244. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1245. || MACH_OMAP_PERSEUS2
  1246. depends on LEDS
  1247. depends on !GENERIC_CLOCKEVENTS
  1248. default y if ARCH_EBSA110
  1249. help
  1250. If you say Y here, one of the system LEDs (the green one on the
  1251. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1252. will flash regularly to indicate that the system is still
  1253. operational. This is mainly useful to kernel hackers who are
  1254. debugging unstable kernels.
  1255. The LART uses the same LED for both Timer LED and CPU usage LED
  1256. functions. You may choose to use both, but the Timer LED function
  1257. will overrule the CPU usage LED.
  1258. config LEDS_CPU
  1259. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1260. !ARCH_OMAP) \
  1261. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1262. || MACH_OMAP_PERSEUS2
  1263. depends on LEDS
  1264. help
  1265. If you say Y here, the red LED will be used to give a good real
  1266. time indication of CPU usage, by lighting whenever the idle task
  1267. is not currently executing.
  1268. The LART uses the same LED for both Timer LED and CPU usage LED
  1269. functions. You may choose to use both, but the Timer LED function
  1270. will overrule the CPU usage LED.
  1271. config ALIGNMENT_TRAP
  1272. bool
  1273. depends on CPU_CP15_MMU
  1274. default y if !ARCH_EBSA110
  1275. select HAVE_PROC_CPU if PROC_FS
  1276. help
  1277. ARM processors cannot fetch/store information which is not
  1278. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1279. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1280. fetch/store instructions will be emulated in software if you say
  1281. here, which has a severe performance impact. This is necessary for
  1282. correct operation of some network protocols. With an IP-only
  1283. configuration it is safe to say N, otherwise say Y.
  1284. config UACCESS_WITH_MEMCPY
  1285. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1286. depends on MMU && EXPERIMENTAL
  1287. default y if CPU_FEROCEON
  1288. help
  1289. Implement faster copy_to_user and clear_user methods for CPU
  1290. cores where a 8-word STM instruction give significantly higher
  1291. memory write throughput than a sequence of individual 32bit stores.
  1292. A possible side effect is a slight increase in scheduling latency
  1293. between threads sharing the same address space if they invoke
  1294. such copy operations with large buffers.
  1295. However, if the CPU data cache is using a write-allocate mode,
  1296. this option is unlikely to provide any performance gain.
  1297. config SECCOMP
  1298. bool
  1299. prompt "Enable seccomp to safely compute untrusted bytecode"
  1300. ---help---
  1301. This kernel feature is useful for number crunching applications
  1302. that may need to compute untrusted bytecode during their
  1303. execution. By using pipes or other transports made available to
  1304. the process as file descriptors supporting the read/write
  1305. syscalls, it's possible to isolate those applications in
  1306. their own address space using seccomp. Once seccomp is
  1307. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1308. and the task is only allowed to execute a few safe syscalls
  1309. defined by each seccomp mode.
  1310. config CC_STACKPROTECTOR
  1311. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1312. depends on EXPERIMENTAL
  1313. help
  1314. This option turns on the -fstack-protector GCC feature. This
  1315. feature puts, at the beginning of functions, a canary value on
  1316. the stack just before the return address, and validates
  1317. the value just before actually returning. Stack based buffer
  1318. overflows (that need to overwrite this return address) now also
  1319. overwrite the canary, which gets detected and the attack is then
  1320. neutralized via a kernel panic.
  1321. This feature requires gcc version 4.2 or above.
  1322. config DEPRECATED_PARAM_STRUCT
  1323. bool "Provide old way to pass kernel parameters"
  1324. help
  1325. This was deprecated in 2001 and announced to live on for 5 years.
  1326. Some old boot loaders still use this way.
  1327. endmenu
  1328. menu "Boot options"
  1329. # Compressed boot loader in ROM. Yes, we really want to ask about
  1330. # TEXT and BSS so we preserve their values in the config files.
  1331. config ZBOOT_ROM_TEXT
  1332. hex "Compressed ROM boot loader base address"
  1333. default "0"
  1334. help
  1335. The physical address at which the ROM-able zImage is to be
  1336. placed in the target. Platforms which normally make use of
  1337. ROM-able zImage formats normally set this to a suitable
  1338. value in their defconfig file.
  1339. If ZBOOT_ROM is not enabled, this has no effect.
  1340. config ZBOOT_ROM_BSS
  1341. hex "Compressed ROM boot loader BSS address"
  1342. default "0"
  1343. help
  1344. The base address of an area of read/write memory in the target
  1345. for the ROM-able zImage which must be available while the
  1346. decompressor is running. It must be large enough to hold the
  1347. entire decompressed kernel plus an additional 128 KiB.
  1348. Platforms which normally make use of ROM-able zImage formats
  1349. normally set this to a suitable value in their defconfig file.
  1350. If ZBOOT_ROM is not enabled, this has no effect.
  1351. config ZBOOT_ROM
  1352. bool "Compressed boot loader in ROM/flash"
  1353. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1354. help
  1355. Say Y here if you intend to execute your compressed kernel image
  1356. (zImage) directly from ROM or flash. If unsure, say N.
  1357. config CMDLINE
  1358. string "Default kernel command string"
  1359. default ""
  1360. help
  1361. On some architectures (EBSA110 and CATS), there is currently no way
  1362. for the boot loader to pass arguments to the kernel. For these
  1363. architectures, you should supply some command-line options at build
  1364. time by entering them here. As a minimum, you should specify the
  1365. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1366. config CMDLINE_FORCE
  1367. bool "Always use the default kernel command string"
  1368. depends on CMDLINE != ""
  1369. help
  1370. Always use the default kernel command string, even if the boot
  1371. loader passes other arguments to the kernel.
  1372. This is useful if you cannot or don't want to change the
  1373. command-line options your boot loader passes to the kernel.
  1374. If unsure, say N.
  1375. config XIP_KERNEL
  1376. bool "Kernel Execute-In-Place from ROM"
  1377. depends on !ZBOOT_ROM
  1378. help
  1379. Execute-In-Place allows the kernel to run from non-volatile storage
  1380. directly addressable by the CPU, such as NOR flash. This saves RAM
  1381. space since the text section of the kernel is not loaded from flash
  1382. to RAM. Read-write sections, such as the data section and stack,
  1383. are still copied to RAM. The XIP kernel is not compressed since
  1384. it has to run directly from flash, so it will take more space to
  1385. store it. The flash address used to link the kernel object files,
  1386. and for storing it, is configuration dependent. Therefore, if you
  1387. say Y here, you must know the proper physical address where to
  1388. store the kernel image depending on your own flash memory usage.
  1389. Also note that the make target becomes "make xipImage" rather than
  1390. "make zImage" or "make Image". The final kernel binary to put in
  1391. ROM memory will be arch/arm/boot/xipImage.
  1392. If unsure, say N.
  1393. config XIP_PHYS_ADDR
  1394. hex "XIP Kernel Physical Location"
  1395. depends on XIP_KERNEL
  1396. default "0x00080000"
  1397. help
  1398. This is the physical address in your flash memory the kernel will
  1399. be linked for and stored to. This address is dependent on your
  1400. own flash usage.
  1401. config KEXEC
  1402. bool "Kexec system call (EXPERIMENTAL)"
  1403. depends on EXPERIMENTAL
  1404. help
  1405. kexec is a system call that implements the ability to shutdown your
  1406. current kernel, and to start another kernel. It is like a reboot
  1407. but it is independent of the system firmware. And like a reboot
  1408. you can start any kernel with it, not just Linux.
  1409. It is an ongoing process to be certain the hardware in a machine
  1410. is properly shutdown, so do not be surprised if this code does not
  1411. initially work for you. It may help to enable device hotplugging
  1412. support.
  1413. config ATAGS_PROC
  1414. bool "Export atags in procfs"
  1415. depends on KEXEC
  1416. default y
  1417. help
  1418. Should the atags used to boot the kernel be exported in an "atags"
  1419. file in procfs. Useful with kexec.
  1420. config CRASH_DUMP
  1421. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1422. depends on EXPERIMENTAL
  1423. help
  1424. Generate crash dump after being started by kexec. This should
  1425. be normally only set in special crash dump kernels which are
  1426. loaded in the main kernel with kexec-tools into a specially
  1427. reserved region and then later executed after a crash by
  1428. kdump/kexec. The crash dump kernel must be compiled to a
  1429. memory address not used by the main kernel
  1430. For more details see Documentation/kdump/kdump.txt
  1431. config AUTO_ZRELADDR
  1432. bool "Auto calculation of the decompressed kernel image address"
  1433. depends on !ZBOOT_ROM && !ARCH_U300
  1434. help
  1435. ZRELADDR is the physical address where the decompressed kernel
  1436. image will be placed. If AUTO_ZRELADDR is selected, the address
  1437. will be determined at run-time by masking the current IP with
  1438. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1439. from start of memory.
  1440. endmenu
  1441. menu "CPU Power Management"
  1442. if ARCH_HAS_CPUFREQ
  1443. source "drivers/cpufreq/Kconfig"
  1444. config CPU_FREQ_IMX
  1445. tristate "CPUfreq driver for i.MX CPUs"
  1446. depends on ARCH_MXC && CPU_FREQ
  1447. help
  1448. This enables the CPUfreq driver for i.MX CPUs.
  1449. config CPU_FREQ_SA1100
  1450. bool
  1451. config CPU_FREQ_SA1110
  1452. bool
  1453. config CPU_FREQ_INTEGRATOR
  1454. tristate "CPUfreq driver for ARM Integrator CPUs"
  1455. depends on ARCH_INTEGRATOR && CPU_FREQ
  1456. default y
  1457. help
  1458. This enables the CPUfreq driver for ARM Integrator CPUs.
  1459. For details, take a look at <file:Documentation/cpu-freq>.
  1460. If in doubt, say Y.
  1461. config CPU_FREQ_PXA
  1462. bool
  1463. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1464. default y
  1465. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1466. config CPU_FREQ_S3C64XX
  1467. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1468. depends on CPU_FREQ && CPU_S3C6410
  1469. config CPU_FREQ_S3C
  1470. bool
  1471. help
  1472. Internal configuration node for common cpufreq on Samsung SoC
  1473. config CPU_FREQ_S3C24XX
  1474. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1475. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1476. select CPU_FREQ_S3C
  1477. help
  1478. This enables the CPUfreq driver for the Samsung S3C24XX family
  1479. of CPUs.
  1480. For details, take a look at <file:Documentation/cpu-freq>.
  1481. If in doubt, say N.
  1482. config CPU_FREQ_S3C24XX_PLL
  1483. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1484. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1485. help
  1486. Compile in support for changing the PLL frequency from the
  1487. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1488. after a frequency change, so by default it is not enabled.
  1489. This also means that the PLL tables for the selected CPU(s) will
  1490. be built which may increase the size of the kernel image.
  1491. config CPU_FREQ_S3C24XX_DEBUG
  1492. bool "Debug CPUfreq Samsung driver core"
  1493. depends on CPU_FREQ_S3C24XX
  1494. help
  1495. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1496. config CPU_FREQ_S3C24XX_IODEBUG
  1497. bool "Debug CPUfreq Samsung driver IO timing"
  1498. depends on CPU_FREQ_S3C24XX
  1499. help
  1500. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1501. config CPU_FREQ_S3C24XX_DEBUGFS
  1502. bool "Export debugfs for CPUFreq"
  1503. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1504. help
  1505. Export status information via debugfs.
  1506. endif
  1507. source "drivers/cpuidle/Kconfig"
  1508. endmenu
  1509. menu "Floating point emulation"
  1510. comment "At least one emulation must be selected"
  1511. config FPE_NWFPE
  1512. bool "NWFPE math emulation"
  1513. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1514. ---help---
  1515. Say Y to include the NWFPE floating point emulator in the kernel.
  1516. This is necessary to run most binaries. Linux does not currently
  1517. support floating point hardware so you need to say Y here even if
  1518. your machine has an FPA or floating point co-processor podule.
  1519. You may say N here if you are going to load the Acorn FPEmulator
  1520. early in the bootup.
  1521. config FPE_NWFPE_XP
  1522. bool "Support extended precision"
  1523. depends on FPE_NWFPE
  1524. help
  1525. Say Y to include 80-bit support in the kernel floating-point
  1526. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1527. Note that gcc does not generate 80-bit operations by default,
  1528. so in most cases this option only enlarges the size of the
  1529. floating point emulator without any good reason.
  1530. You almost surely want to say N here.
  1531. config FPE_FASTFPE
  1532. bool "FastFPE math emulation (EXPERIMENTAL)"
  1533. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1534. ---help---
  1535. Say Y here to include the FAST floating point emulator in the kernel.
  1536. This is an experimental much faster emulator which now also has full
  1537. precision for the mantissa. It does not support any exceptions.
  1538. It is very simple, and approximately 3-6 times faster than NWFPE.
  1539. It should be sufficient for most programs. It may be not suitable
  1540. for scientific calculations, but you have to check this for yourself.
  1541. If you do not feel you need a faster FP emulation you should better
  1542. choose NWFPE.
  1543. config VFP
  1544. bool "VFP-format floating point maths"
  1545. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1546. help
  1547. Say Y to include VFP support code in the kernel. This is needed
  1548. if your hardware includes a VFP unit.
  1549. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1550. release notes and additional status information.
  1551. Say N if your target does not have VFP hardware.
  1552. config VFPv3
  1553. bool
  1554. depends on VFP
  1555. default y if CPU_V7
  1556. config NEON
  1557. bool "Advanced SIMD (NEON) Extension support"
  1558. depends on VFPv3 && CPU_V7
  1559. help
  1560. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1561. Extension.
  1562. endmenu
  1563. menu "Userspace binary formats"
  1564. source "fs/Kconfig.binfmt"
  1565. config ARTHUR
  1566. tristate "RISC OS personality"
  1567. depends on !AEABI
  1568. help
  1569. Say Y here to include the kernel code necessary if you want to run
  1570. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1571. experimental; if this sounds frightening, say N and sleep in peace.
  1572. You can also say M here to compile this support as a module (which
  1573. will be called arthur).
  1574. endmenu
  1575. menu "Power management options"
  1576. source "kernel/power/Kconfig"
  1577. config ARCH_SUSPEND_POSSIBLE
  1578. def_bool y
  1579. endmenu
  1580. source "net/Kconfig"
  1581. source "drivers/Kconfig"
  1582. source "fs/Kconfig"
  1583. source "arch/arm/Kconfig.debug"
  1584. source "security/Kconfig"
  1585. source "crypto/Kconfig"
  1586. source "lib/Kconfig"