Kconfig 38 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498
  1. #
  2. # For a description of the syntax of this configuration file,
  3. # see Documentation/kbuild/kconfig-language.txt.
  4. #
  5. mainmenu "Linux Kernel Configuration"
  6. config ARM
  7. bool
  8. default y
  9. select HAVE_AOUT
  10. select HAVE_IDE
  11. select RTC_LIB
  12. select SYS_SUPPORTS_APM_EMULATION
  13. select HAVE_OPROFILE
  14. select HAVE_ARCH_KGDB
  15. select HAVE_KPROBES if (!XIP_KERNEL)
  16. select HAVE_KRETPROBES if (HAVE_KPROBES)
  17. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  18. select HAVE_GENERIC_DMA_COHERENT
  19. help
  20. The ARM series is a line of low-power-consumption RISC chip designs
  21. licensed by ARM Ltd and targeted at embedded applications and
  22. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  23. manufactured, but legacy ARM-based PC hardware remains popular in
  24. Europe. There is an ARM Linux project with a web page at
  25. <http://www.arm.linux.org.uk/>.
  26. config HAVE_PWM
  27. bool
  28. config SYS_SUPPORTS_APM_EMULATION
  29. bool
  30. config GENERIC_GPIO
  31. bool
  32. config GENERIC_TIME
  33. bool
  34. config GENERIC_CLOCKEVENTS
  35. bool
  36. config GENERIC_CLOCKEVENTS_BROADCAST
  37. bool
  38. depends on GENERIC_CLOCKEVENTS
  39. default y if SMP && !LOCAL_TIMERS
  40. config MMU
  41. bool
  42. default y
  43. config NO_IOPORT
  44. bool
  45. config EISA
  46. bool
  47. ---help---
  48. The Extended Industry Standard Architecture (EISA) bus was
  49. developed as an open alternative to the IBM MicroChannel bus.
  50. The EISA bus provided some of the features of the IBM MicroChannel
  51. bus while maintaining backward compatibility with cards made for
  52. the older ISA bus. The EISA bus saw limited use between 1988 and
  53. 1995 when it was made obsolete by the PCI bus.
  54. Say Y here if you are building a kernel for an EISA-based machine.
  55. Otherwise, say N.
  56. config SBUS
  57. bool
  58. config MCA
  59. bool
  60. help
  61. MicroChannel Architecture is found in some IBM PS/2 machines and
  62. laptops. It is a bus system similar to PCI or ISA. See
  63. <file:Documentation/mca.txt> (and especially the web page given
  64. there) before attempting to build an MCA bus kernel.
  65. config GENERIC_HARDIRQS
  66. bool
  67. default y
  68. config STACKTRACE_SUPPORT
  69. bool
  70. default y
  71. config HAVE_LATENCYTOP_SUPPORT
  72. bool
  73. depends on !SMP
  74. default y
  75. config LOCKDEP_SUPPORT
  76. bool
  77. default y
  78. config TRACE_IRQFLAGS_SUPPORT
  79. bool
  80. default y
  81. config HARDIRQS_SW_RESEND
  82. bool
  83. default y
  84. config GENERIC_IRQ_PROBE
  85. bool
  86. default y
  87. config GENERIC_LOCKBREAK
  88. bool
  89. default y
  90. depends on SMP && PREEMPT
  91. config RWSEM_GENERIC_SPINLOCK
  92. bool
  93. default y
  94. config RWSEM_XCHGADD_ALGORITHM
  95. bool
  96. config ARCH_HAS_ILOG2_U32
  97. bool
  98. config ARCH_HAS_ILOG2_U64
  99. bool
  100. config GENERIC_HWEIGHT
  101. bool
  102. default y
  103. config GENERIC_CALIBRATE_DELAY
  104. bool
  105. default y
  106. config ARCH_MAY_HAVE_PC_FDC
  107. bool
  108. config ZONE_DMA
  109. bool
  110. config GENERIC_ISA_DMA
  111. bool
  112. config FIQ
  113. bool
  114. config ARCH_MTD_XIP
  115. bool
  116. config GENERIC_HARDIRQS_NO__DO_IRQ
  117. def_bool y
  118. if OPROFILE
  119. config OPROFILE_ARMV6
  120. def_bool y
  121. depends on CPU_V6 && !SMP
  122. select OPROFILE_ARM11_CORE
  123. config OPROFILE_MPCORE
  124. def_bool y
  125. depends on CPU_V6 && SMP
  126. select OPROFILE_ARM11_CORE
  127. config OPROFILE_ARM11_CORE
  128. bool
  129. config OPROFILE_ARMV7
  130. def_bool y
  131. depends on CPU_V7 && !SMP
  132. bool
  133. endif
  134. config VECTORS_BASE
  135. hex
  136. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  137. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  138. default 0x00000000
  139. help
  140. The base address of exception vectors.
  141. source "init/Kconfig"
  142. source "kernel/Kconfig.freezer"
  143. menu "System Type"
  144. choice
  145. prompt "ARM system type"
  146. default ARCH_VERSATILE
  147. config ARCH_AAEC2000
  148. bool "Agilent AAEC-2000 based"
  149. select CPU_ARM920T
  150. select ARM_AMBA
  151. select HAVE_CLK
  152. help
  153. This enables support for systems based on the Agilent AAEC-2000
  154. config ARCH_INTEGRATOR
  155. bool "ARM Ltd. Integrator family"
  156. select ARM_AMBA
  157. select HAVE_CLK
  158. select COMMON_CLKDEV
  159. select ICST525
  160. help
  161. Support for ARM's Integrator platform.
  162. config ARCH_REALVIEW
  163. bool "ARM Ltd. RealView family"
  164. select ARM_AMBA
  165. select HAVE_CLK
  166. select COMMON_CLKDEV
  167. select ICST307
  168. select GENERIC_TIME
  169. select GENERIC_CLOCKEVENTS
  170. help
  171. This enables support for ARM Ltd RealView boards.
  172. config ARCH_VERSATILE
  173. bool "ARM Ltd. Versatile family"
  174. select ARM_AMBA
  175. select ARM_VIC
  176. select HAVE_CLK
  177. select COMMON_CLKDEV
  178. select ICST307
  179. select GENERIC_TIME
  180. select GENERIC_CLOCKEVENTS
  181. help
  182. This enables support for ARM Ltd Versatile board.
  183. config ARCH_AT91
  184. bool "Atmel AT91"
  185. select GENERIC_GPIO
  186. select ARCH_REQUIRE_GPIOLIB
  187. select HAVE_CLK
  188. help
  189. This enables support for systems based on the Atmel AT91RM9200,
  190. AT91SAM9 and AT91CAP9 processors.
  191. config ARCH_CLPS711X
  192. bool "Cirrus Logic CLPS711x/EP721x-based"
  193. select CPU_ARM720T
  194. help
  195. Support for Cirrus Logic 711x/721x based boards.
  196. config ARCH_GEMINI
  197. bool "Cortina Systems Gemini"
  198. select CPU_FA526
  199. select GENERIC_GPIO
  200. select ARCH_REQUIRE_GPIOLIB
  201. help
  202. Support for the Cortina Systems Gemini family SoCs
  203. config ARCH_EBSA110
  204. bool "EBSA-110"
  205. select CPU_SA110
  206. select ISA
  207. select NO_IOPORT
  208. help
  209. This is an evaluation board for the StrongARM processor available
  210. from Digital. It has limited hardware on-board, including an
  211. Ethernet interface, two PCMCIA sockets, two serial ports and a
  212. parallel port.
  213. config ARCH_EP93XX
  214. bool "EP93xx-based"
  215. select CPU_ARM920T
  216. select ARM_AMBA
  217. select ARM_VIC
  218. select GENERIC_GPIO
  219. select HAVE_CLK
  220. select COMMON_CLKDEV
  221. select ARCH_REQUIRE_GPIOLIB
  222. select ARCH_HAS_HOLES_MEMORYMODEL
  223. help
  224. This enables support for the Cirrus EP93xx series of CPUs.
  225. config ARCH_FOOTBRIDGE
  226. bool "FootBridge"
  227. select CPU_SA110
  228. select FOOTBRIDGE
  229. help
  230. Support for systems based on the DC21285 companion chip
  231. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  232. config ARCH_MXC
  233. bool "Freescale MXC/iMX-based"
  234. select GENERIC_TIME
  235. select GENERIC_CLOCKEVENTS
  236. select ARCH_MTD_XIP
  237. select GENERIC_GPIO
  238. select ARCH_REQUIRE_GPIOLIB
  239. select HAVE_CLK
  240. help
  241. Support for Freescale MXC/iMX-based family of processors
  242. config ARCH_STMP3XXX
  243. bool "Freescale STMP3xxx"
  244. select CPU_ARM926T
  245. select HAVE_CLK
  246. select COMMON_CLKDEV
  247. select ARCH_REQUIRE_GPIOLIB
  248. select GENERIC_TIME
  249. select GENERIC_CLOCKEVENTS
  250. select GENERIC_GPIO
  251. select USB_ARCH_HAS_EHCI
  252. help
  253. Support for systems based on the Freescale 3xxx CPUs.
  254. config ARCH_NETX
  255. bool "Hilscher NetX based"
  256. select CPU_ARM926T
  257. select ARM_VIC
  258. select GENERIC_CLOCKEVENTS
  259. select GENERIC_TIME
  260. help
  261. This enables support for systems based on the Hilscher NetX Soc
  262. config ARCH_H720X
  263. bool "Hynix HMS720x-based"
  264. select CPU_ARM720T
  265. select ISA_DMA_API
  266. help
  267. This enables support for systems based on the Hynix HMS720x
  268. config ARCH_IOP13XX
  269. bool "IOP13xx-based"
  270. depends on MMU
  271. select CPU_XSC3
  272. select PLAT_IOP
  273. select PCI
  274. select ARCH_SUPPORTS_MSI
  275. select VMSPLIT_1G
  276. help
  277. Support for Intel's IOP13XX (XScale) family of processors.
  278. config ARCH_IOP32X
  279. bool "IOP32x-based"
  280. depends on MMU
  281. select CPU_XSCALE
  282. select PLAT_IOP
  283. select PCI
  284. select GENERIC_GPIO
  285. select ARCH_REQUIRE_GPIOLIB
  286. help
  287. Support for Intel's 80219 and IOP32X (XScale) family of
  288. processors.
  289. config ARCH_IOP33X
  290. bool "IOP33x-based"
  291. depends on MMU
  292. select CPU_XSCALE
  293. select PLAT_IOP
  294. select PCI
  295. select GENERIC_GPIO
  296. select ARCH_REQUIRE_GPIOLIB
  297. help
  298. Support for Intel's IOP33X (XScale) family of processors.
  299. config ARCH_IXP23XX
  300. bool "IXP23XX-based"
  301. depends on MMU
  302. select CPU_XSC3
  303. select PCI
  304. help
  305. Support for Intel's IXP23xx (XScale) family of processors.
  306. config ARCH_IXP2000
  307. bool "IXP2400/2800-based"
  308. depends on MMU
  309. select CPU_XSCALE
  310. select PCI
  311. help
  312. Support for Intel's IXP2400/2800 (XScale) family of processors.
  313. config ARCH_IXP4XX
  314. bool "IXP4xx-based"
  315. depends on MMU
  316. select CPU_XSCALE
  317. select GENERIC_GPIO
  318. select GENERIC_TIME
  319. select GENERIC_CLOCKEVENTS
  320. select DMABOUNCE if PCI
  321. help
  322. Support for Intel's IXP4XX (XScale) family of processors.
  323. config ARCH_L7200
  324. bool "LinkUp-L7200"
  325. select CPU_ARM720T
  326. select FIQ
  327. help
  328. Say Y here if you intend to run this kernel on a LinkUp Systems
  329. L7200 Software Development Board which uses an ARM720T processor.
  330. Information on this board can be obtained at:
  331. <http://www.linkupsys.com/>
  332. If you have any questions or comments about the Linux kernel port
  333. to this board, send e-mail to <sjhill@cotw.com>.
  334. config ARCH_KIRKWOOD
  335. bool "Marvell Kirkwood"
  336. select CPU_FEROCEON
  337. select PCI
  338. select GENERIC_GPIO
  339. select ARCH_REQUIRE_GPIOLIB
  340. select GENERIC_TIME
  341. select GENERIC_CLOCKEVENTS
  342. select PLAT_ORION
  343. help
  344. Support for the following Marvell Kirkwood series SoCs:
  345. 88F6180, 88F6192 and 88F6281.
  346. config ARCH_LOKI
  347. bool "Marvell Loki (88RC8480)"
  348. select CPU_FEROCEON
  349. select GENERIC_TIME
  350. select GENERIC_CLOCKEVENTS
  351. select PLAT_ORION
  352. help
  353. Support for the Marvell Loki (88RC8480) SoC.
  354. config ARCH_MV78XX0
  355. bool "Marvell MV78xx0"
  356. select CPU_FEROCEON
  357. select PCI
  358. select GENERIC_GPIO
  359. select ARCH_REQUIRE_GPIOLIB
  360. select GENERIC_TIME
  361. select GENERIC_CLOCKEVENTS
  362. select PLAT_ORION
  363. help
  364. Support for the following Marvell MV78xx0 series SoCs:
  365. MV781x0, MV782x0.
  366. config ARCH_ORION5X
  367. bool "Marvell Orion"
  368. depends on MMU
  369. select CPU_FEROCEON
  370. select PCI
  371. select GENERIC_GPIO
  372. select ARCH_REQUIRE_GPIOLIB
  373. select GENERIC_TIME
  374. select GENERIC_CLOCKEVENTS
  375. select PLAT_ORION
  376. help
  377. Support for the following Marvell Orion 5x series SoCs:
  378. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  379. Orion-2 (5281), Orion-1-90 (6183).
  380. config ARCH_MMP
  381. bool "Marvell PXA168/910"
  382. depends on MMU
  383. select GENERIC_GPIO
  384. select ARCH_REQUIRE_GPIOLIB
  385. select HAVE_CLK
  386. select COMMON_CLKDEV
  387. select GENERIC_TIME
  388. select GENERIC_CLOCKEVENTS
  389. select TICK_ONESHOT
  390. select PLAT_PXA
  391. help
  392. Support for Marvell's PXA168/910 processor line.
  393. config ARCH_KS8695
  394. bool "Micrel/Kendin KS8695"
  395. select CPU_ARM922T
  396. select GENERIC_GPIO
  397. select ARCH_REQUIRE_GPIOLIB
  398. help
  399. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  400. System-on-Chip devices.
  401. config ARCH_NS9XXX
  402. bool "NetSilicon NS9xxx"
  403. select CPU_ARM926T
  404. select GENERIC_GPIO
  405. select GENERIC_TIME
  406. select GENERIC_CLOCKEVENTS
  407. select HAVE_CLK
  408. help
  409. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  410. System.
  411. <http://www.digi.com/products/microprocessors/index.jsp>
  412. config ARCH_W90X900
  413. bool "Nuvoton W90X900 CPU"
  414. select CPU_ARM926T
  415. select ARCH_REQUIRE_GPIOLIB
  416. select GENERIC_GPIO
  417. select HAVE_CLK
  418. select COMMON_CLKDEV
  419. select GENERIC_TIME
  420. select GENERIC_CLOCKEVENTS
  421. help
  422. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  423. At present, the w90x900 has been renamed nuc900, regarding
  424. the ARM series product line, you can login the following
  425. link address to know more.
  426. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  427. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  428. config ARCH_PNX4008
  429. bool "Philips Nexperia PNX4008 Mobile"
  430. select CPU_ARM926T
  431. select HAVE_CLK
  432. help
  433. This enables support for Philips PNX4008 mobile platform.
  434. config ARCH_PXA
  435. bool "PXA2xx/PXA3xx-based"
  436. depends on MMU
  437. select ARCH_MTD_XIP
  438. select GENERIC_GPIO
  439. select HAVE_CLK
  440. select COMMON_CLKDEV
  441. select ARCH_REQUIRE_GPIOLIB
  442. select GENERIC_TIME
  443. select GENERIC_CLOCKEVENTS
  444. select TICK_ONESHOT
  445. select PLAT_PXA
  446. help
  447. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  448. config ARCH_MSM
  449. bool "Qualcomm MSM"
  450. select CPU_V6
  451. select GENERIC_TIME
  452. select GENERIC_CLOCKEVENTS
  453. help
  454. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  455. apps processor of the MSM7K and depends on a shared memory
  456. interface to the ARM9 modem processor which runs the baseband stack
  457. and controls some vital subsystems (clock and power control, etc).
  458. config ARCH_RPC
  459. bool "RiscPC"
  460. select ARCH_ACORN
  461. select FIQ
  462. select TIMER_ACORN
  463. select ARCH_MAY_HAVE_PC_FDC
  464. select HAVE_PATA_PLATFORM
  465. select ISA_DMA_API
  466. select NO_IOPORT
  467. select ARCH_SPARSEMEM_ENABLE
  468. help
  469. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  470. CD-ROM interface, serial and parallel port, and the floppy drive.
  471. config ARCH_SA1100
  472. bool "SA1100-based"
  473. select CPU_SA1100
  474. select ISA
  475. select ARCH_SPARSEMEM_ENABLE
  476. select ARCH_MTD_XIP
  477. select GENERIC_GPIO
  478. select GENERIC_TIME
  479. select GENERIC_CLOCKEVENTS
  480. select HAVE_CLK
  481. select TICK_ONESHOT
  482. select ARCH_REQUIRE_GPIOLIB
  483. help
  484. Support for StrongARM 11x0 based boards.
  485. config ARCH_S3C2410
  486. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  487. select GENERIC_GPIO
  488. select HAVE_CLK
  489. help
  490. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  491. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  492. the Samsung SMDK2410 development board (and derivatives).
  493. config ARCH_S3C64XX
  494. bool "Samsung S3C64XX"
  495. select GENERIC_GPIO
  496. select HAVE_CLK
  497. help
  498. Samsung S3C64XX series based systems
  499. config ARCH_SHARK
  500. bool "Shark"
  501. select CPU_SA110
  502. select ISA
  503. select ISA_DMA
  504. select ZONE_DMA
  505. select PCI
  506. help
  507. Support for the StrongARM based Digital DNARD machine, also known
  508. as "Shark" (<http://www.shark-linux.de/shark.html>).
  509. config ARCH_LH7A40X
  510. bool "Sharp LH7A40X"
  511. select CPU_ARM922T
  512. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  513. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  514. help
  515. Say Y here for systems based on one of the Sharp LH7A40X
  516. System on a Chip processors. These CPUs include an ARM922T
  517. core with a wide array of integrated devices for
  518. hand-held and low-power applications.
  519. config ARCH_U300
  520. bool "ST-Ericsson U300 Series"
  521. depends on MMU
  522. select CPU_ARM926T
  523. select ARM_AMBA
  524. select ARM_VIC
  525. select GENERIC_TIME
  526. select GENERIC_CLOCKEVENTS
  527. select HAVE_CLK
  528. select COMMON_CLKDEV
  529. select GENERIC_GPIO
  530. help
  531. Support for ST-Ericsson U300 series mobile platforms.
  532. config ARCH_DAVINCI
  533. bool "TI DaVinci"
  534. select CPU_ARM926T
  535. select GENERIC_TIME
  536. select GENERIC_CLOCKEVENTS
  537. select GENERIC_GPIO
  538. select ARCH_REQUIRE_GPIOLIB
  539. select HAVE_CLK
  540. select ZONE_DMA
  541. select HAVE_IDE
  542. select COMMON_CLKDEV
  543. select GENERIC_ALLOCATOR
  544. help
  545. Support for TI's DaVinci platform.
  546. config ARCH_OMAP
  547. bool "TI OMAP"
  548. select GENERIC_GPIO
  549. select HAVE_CLK
  550. select ARCH_REQUIRE_GPIOLIB
  551. select GENERIC_TIME
  552. select GENERIC_CLOCKEVENTS
  553. help
  554. Support for TI's OMAP platform (OMAP1 and OMAP2).
  555. endchoice
  556. source "arch/arm/mach-clps711x/Kconfig"
  557. source "arch/arm/mach-ep93xx/Kconfig"
  558. source "arch/arm/mach-footbridge/Kconfig"
  559. source "arch/arm/mach-gemini/Kconfig"
  560. source "arch/arm/mach-integrator/Kconfig"
  561. source "arch/arm/mach-iop32x/Kconfig"
  562. source "arch/arm/mach-iop33x/Kconfig"
  563. source "arch/arm/mach-iop13xx/Kconfig"
  564. source "arch/arm/mach-ixp4xx/Kconfig"
  565. source "arch/arm/mach-ixp2000/Kconfig"
  566. source "arch/arm/mach-ixp23xx/Kconfig"
  567. source "arch/arm/mach-loki/Kconfig"
  568. source "arch/arm/mach-mv78xx0/Kconfig"
  569. source "arch/arm/mach-pxa/Kconfig"
  570. source "arch/arm/plat-pxa/Kconfig"
  571. source "arch/arm/mach-mmp/Kconfig"
  572. source "arch/arm/mach-sa1100/Kconfig"
  573. source "arch/arm/plat-omap/Kconfig"
  574. source "arch/arm/mach-omap1/Kconfig"
  575. source "arch/arm/mach-omap2/Kconfig"
  576. source "arch/arm/mach-orion5x/Kconfig"
  577. source "arch/arm/mach-kirkwood/Kconfig"
  578. source "arch/arm/plat-s3c24xx/Kconfig"
  579. source "arch/arm/plat-s3c64xx/Kconfig"
  580. source "arch/arm/plat-s3c/Kconfig"
  581. if ARCH_S3C2410
  582. source "arch/arm/mach-s3c2400/Kconfig"
  583. source "arch/arm/mach-s3c2410/Kconfig"
  584. source "arch/arm/mach-s3c2412/Kconfig"
  585. source "arch/arm/mach-s3c2440/Kconfig"
  586. source "arch/arm/mach-s3c2442/Kconfig"
  587. source "arch/arm/mach-s3c2443/Kconfig"
  588. endif
  589. if ARCH_S3C64XX
  590. source "arch/arm/mach-s3c6400/Kconfig"
  591. source "arch/arm/mach-s3c6410/Kconfig"
  592. endif
  593. source "arch/arm/plat-stmp3xxx/Kconfig"
  594. source "arch/arm/mach-lh7a40x/Kconfig"
  595. source "arch/arm/mach-h720x/Kconfig"
  596. source "arch/arm/mach-versatile/Kconfig"
  597. source "arch/arm/mach-aaec2000/Kconfig"
  598. source "arch/arm/mach-realview/Kconfig"
  599. source "arch/arm/mach-at91/Kconfig"
  600. source "arch/arm/plat-mxc/Kconfig"
  601. source "arch/arm/mach-netx/Kconfig"
  602. source "arch/arm/mach-ns9xxx/Kconfig"
  603. source "arch/arm/mach-davinci/Kconfig"
  604. source "arch/arm/mach-ks8695/Kconfig"
  605. source "arch/arm/mach-msm/Kconfig"
  606. source "arch/arm/mach-u300/Kconfig"
  607. source "arch/arm/mach-w90x900/Kconfig"
  608. # Definitions to make life easier
  609. config ARCH_ACORN
  610. bool
  611. config PLAT_IOP
  612. bool
  613. config PLAT_ORION
  614. bool
  615. config PLAT_PXA
  616. bool
  617. source arch/arm/mm/Kconfig
  618. config IWMMXT
  619. bool "Enable iWMMXt support"
  620. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  621. default y if PXA27x || PXA3xx || ARCH_MMP
  622. help
  623. Enable support for iWMMXt context switching at run time if
  624. running on a CPU that supports it.
  625. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  626. config XSCALE_PMU
  627. bool
  628. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  629. default y
  630. if !MMU
  631. source "arch/arm/Kconfig-nommu"
  632. endif
  633. config ARM_ERRATA_411920
  634. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  635. depends on CPU_V6 && !SMP
  636. help
  637. Invalidation of the Instruction Cache operation can
  638. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  639. It does not affect the MPCore. This option enables the ARM Ltd.
  640. recommended workaround.
  641. config ARM_ERRATA_430973
  642. bool "ARM errata: Stale prediction on replaced interworking branch"
  643. depends on CPU_V7
  644. help
  645. This option enables the workaround for the 430973 Cortex-A8
  646. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  647. interworking branch is replaced with another code sequence at the
  648. same virtual address, whether due to self-modifying code or virtual
  649. to physical address re-mapping, Cortex-A8 does not recover from the
  650. stale interworking branch prediction. This results in Cortex-A8
  651. executing the new code sequence in the incorrect ARM or Thumb state.
  652. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  653. and also flushes the branch target cache at every context switch.
  654. Note that setting specific bits in the ACTLR register may not be
  655. available in non-secure mode.
  656. config ARM_ERRATA_458693
  657. bool "ARM errata: Processor deadlock when a false hazard is created"
  658. depends on CPU_V7
  659. help
  660. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  661. erratum. For very specific sequences of memory operations, it is
  662. possible for a hazard condition intended for a cache line to instead
  663. be incorrectly associated with a different cache line. This false
  664. hazard might then cause a processor deadlock. The workaround enables
  665. the L1 caching of the NEON accesses and disables the PLD instruction
  666. in the ACTLR register. Note that setting specific bits in the ACTLR
  667. register may not be available in non-secure mode.
  668. config ARM_ERRATA_460075
  669. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  670. depends on CPU_V7
  671. help
  672. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  673. erratum. Any asynchronous access to the L2 cache may encounter a
  674. situation in which recent store transactions to the L2 cache are lost
  675. and overwritten with stale memory contents from external memory. The
  676. workaround disables the write-allocate mode for the L2 cache via the
  677. ACTLR register. Note that setting specific bits in the ACTLR register
  678. may not be available in non-secure mode.
  679. endmenu
  680. source "arch/arm/common/Kconfig"
  681. config FORCE_MAX_ZONEORDER
  682. int
  683. depends on SA1111
  684. default "9"
  685. menu "Bus support"
  686. config ARM_AMBA
  687. bool
  688. config ISA
  689. bool
  690. help
  691. Find out whether you have ISA slots on your motherboard. ISA is the
  692. name of a bus system, i.e. the way the CPU talks to the other stuff
  693. inside your box. Other bus systems are PCI, EISA, MicroChannel
  694. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  695. newer boards don't support it. If you have ISA, say Y, otherwise N.
  696. # Select ISA DMA controller support
  697. config ISA_DMA
  698. bool
  699. select ISA_DMA_API
  700. # Select ISA DMA interface
  701. config ISA_DMA_API
  702. bool
  703. config PCI
  704. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  705. help
  706. Find out whether you have a PCI motherboard. PCI is the name of a
  707. bus system, i.e. the way the CPU talks to the other stuff inside
  708. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  709. VESA. If you have PCI, say Y, otherwise N.
  710. config PCI_SYSCALL
  711. def_bool PCI
  712. # Select the host bridge type
  713. config PCI_HOST_VIA82C505
  714. bool
  715. depends on PCI && ARCH_SHARK
  716. default y
  717. config PCI_HOST_ITE8152
  718. bool
  719. depends on PCI && MACH_ARMCORE
  720. default y
  721. select DMABOUNCE
  722. source "drivers/pci/Kconfig"
  723. source "drivers/pcmcia/Kconfig"
  724. endmenu
  725. menu "Kernel Features"
  726. source "kernel/time/Kconfig"
  727. config SMP
  728. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  729. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  730. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
  731. depends on GENERIC_CLOCKEVENTS
  732. select USE_GENERIC_SMP_HELPERS
  733. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
  734. help
  735. This enables support for systems with more than one CPU. If you have
  736. a system with only one CPU, like most personal computers, say N. If
  737. you have a system with more than one CPU, say Y.
  738. If you say N here, the kernel will run on single and multiprocessor
  739. machines, but will use only one CPU of a multiprocessor machine. If
  740. you say Y here, the kernel will run on many, but not all, single
  741. processor machines. On a single processor machine, the kernel will
  742. run faster if you say N here.
  743. See also <file:Documentation/i386/IO-APIC.txt>,
  744. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  745. <http://www.linuxdoc.org/docs.html#howto>.
  746. If you don't know what to do here, say N.
  747. config HAVE_ARM_SCU
  748. bool
  749. depends on SMP
  750. help
  751. This option enables support for the ARM system coherency unit
  752. config HAVE_ARM_TWD
  753. bool
  754. depends on SMP
  755. help
  756. This options enables support for the ARM timer and watchdog unit
  757. choice
  758. prompt "Memory split"
  759. default VMSPLIT_3G
  760. help
  761. Select the desired split between kernel and user memory.
  762. If you are not absolutely sure what you are doing, leave this
  763. option alone!
  764. config VMSPLIT_3G
  765. bool "3G/1G user/kernel split"
  766. config VMSPLIT_2G
  767. bool "2G/2G user/kernel split"
  768. config VMSPLIT_1G
  769. bool "1G/3G user/kernel split"
  770. endchoice
  771. config PAGE_OFFSET
  772. hex
  773. default 0x40000000 if VMSPLIT_1G
  774. default 0x80000000 if VMSPLIT_2G
  775. default 0xC0000000
  776. config NR_CPUS
  777. int "Maximum number of CPUs (2-32)"
  778. range 2 32
  779. depends on SMP
  780. default "4"
  781. config HOTPLUG_CPU
  782. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  783. depends on SMP && HOTPLUG && EXPERIMENTAL
  784. help
  785. Say Y here to experiment with turning CPUs off and on. CPUs
  786. can be controlled through /sys/devices/system/cpu.
  787. config LOCAL_TIMERS
  788. bool "Use local timer interrupts"
  789. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  790. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
  791. default y
  792. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
  793. help
  794. Enable support for local timers on SMP platforms, rather then the
  795. legacy IPI broadcast method. Local timers allows the system
  796. accounting to be spread across the timer interval, preventing a
  797. "thundering herd" at every timer tick.
  798. config PREEMPT
  799. bool "Preemptible Kernel (EXPERIMENTAL)"
  800. depends on EXPERIMENTAL
  801. help
  802. This option reduces the latency of the kernel when reacting to
  803. real-time or interactive events by allowing a low priority process to
  804. be preempted even if it is in kernel mode executing a system call.
  805. This allows applications to run more reliably even when the system is
  806. under load.
  807. Say Y here if you are building a kernel for a desktop, embedded
  808. or real-time system. Say N if you are unsure.
  809. config HZ
  810. int
  811. default 128 if ARCH_L7200
  812. default 200 if ARCH_EBSA110 || ARCH_S3C2410
  813. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  814. default AT91_TIMER_HZ if ARCH_AT91
  815. default 100
  816. config AEABI
  817. bool "Use the ARM EABI to compile the kernel"
  818. help
  819. This option allows for the kernel to be compiled using the latest
  820. ARM ABI (aka EABI). This is only useful if you are using a user
  821. space environment that is also compiled with EABI.
  822. Since there are major incompatibilities between the legacy ABI and
  823. EABI, especially with regard to structure member alignment, this
  824. option also changes the kernel syscall calling convention to
  825. disambiguate both ABIs and allow for backward compatibility support
  826. (selected with CONFIG_OABI_COMPAT).
  827. To use this you need GCC version 4.0.0 or later.
  828. config OABI_COMPAT
  829. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  830. depends on AEABI && EXPERIMENTAL
  831. default y
  832. help
  833. This option preserves the old syscall interface along with the
  834. new (ARM EABI) one. It also provides a compatibility layer to
  835. intercept syscalls that have structure arguments which layout
  836. in memory differs between the legacy ABI and the new ARM EABI
  837. (only for non "thumb" binaries). This option adds a tiny
  838. overhead to all syscalls and produces a slightly larger kernel.
  839. If you know you'll be using only pure EABI user space then you
  840. can say N here. If this option is not selected and you attempt
  841. to execute a legacy ABI binary then the result will be
  842. UNPREDICTABLE (in fact it can be predicted that it won't work
  843. at all). If in doubt say Y.
  844. config ARCH_HAS_HOLES_MEMORYMODEL
  845. bool
  846. # Discontigmem is deprecated
  847. config ARCH_DISCONTIGMEM_ENABLE
  848. bool
  849. config ARCH_SPARSEMEM_ENABLE
  850. bool
  851. config ARCH_SPARSEMEM_DEFAULT
  852. def_bool ARCH_SPARSEMEM_ENABLE
  853. config ARCH_SELECT_MEMORY_MODEL
  854. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  855. config NODES_SHIFT
  856. int
  857. default "4" if ARCH_LH7A40X
  858. default "2"
  859. depends on NEED_MULTIPLE_NODES
  860. config HIGHMEM
  861. bool "High Memory Support (EXPERIMENTAL)"
  862. depends on MMU && EXPERIMENTAL
  863. help
  864. The address space of ARM processors is only 4 Gigabytes large
  865. and it has to accommodate user address space, kernel address
  866. space as well as some memory mapped IO. That means that, if you
  867. have a large amount of physical memory and/or IO, not all of the
  868. memory can be "permanently mapped" by the kernel. The physical
  869. memory that is not permanently mapped is called "high memory".
  870. Depending on the selected kernel/user memory split, minimum
  871. vmalloc space and actual amount of RAM, you may not need this
  872. option which should result in a slightly faster kernel.
  873. If unsure, say n.
  874. source "mm/Kconfig"
  875. config LEDS
  876. bool "Timer and CPU usage LEDs"
  877. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  878. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  879. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  880. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  881. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  882. ARCH_AT91 || ARCH_DAVINCI || \
  883. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  884. help
  885. If you say Y here, the LEDs on your machine will be used
  886. to provide useful information about your current system status.
  887. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  888. be able to select which LEDs are active using the options below. If
  889. you are compiling a kernel for the EBSA-110 or the LART however, the
  890. red LED will simply flash regularly to indicate that the system is
  891. still functional. It is safe to say Y here if you have a CATS
  892. system, but the driver will do nothing.
  893. config LEDS_TIMER
  894. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  895. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  896. || MACH_OMAP_PERSEUS2
  897. depends on LEDS
  898. depends on !GENERIC_CLOCKEVENTS
  899. default y if ARCH_EBSA110
  900. help
  901. If you say Y here, one of the system LEDs (the green one on the
  902. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  903. will flash regularly to indicate that the system is still
  904. operational. This is mainly useful to kernel hackers who are
  905. debugging unstable kernels.
  906. The LART uses the same LED for both Timer LED and CPU usage LED
  907. functions. You may choose to use both, but the Timer LED function
  908. will overrule the CPU usage LED.
  909. config LEDS_CPU
  910. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  911. !ARCH_OMAP) \
  912. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  913. || MACH_OMAP_PERSEUS2
  914. depends on LEDS
  915. help
  916. If you say Y here, the red LED will be used to give a good real
  917. time indication of CPU usage, by lighting whenever the idle task
  918. is not currently executing.
  919. The LART uses the same LED for both Timer LED and CPU usage LED
  920. functions. You may choose to use both, but the Timer LED function
  921. will overrule the CPU usage LED.
  922. config ALIGNMENT_TRAP
  923. bool
  924. depends on CPU_CP15_MMU
  925. default y if !ARCH_EBSA110
  926. help
  927. ARM processors cannot fetch/store information which is not
  928. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  929. address divisible by 4. On 32-bit ARM processors, these non-aligned
  930. fetch/store instructions will be emulated in software if you say
  931. here, which has a severe performance impact. This is necessary for
  932. correct operation of some network protocols. With an IP-only
  933. configuration it is safe to say N, otherwise say Y.
  934. config UACCESS_WITH_MEMCPY
  935. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  936. depends on MMU && EXPERIMENTAL
  937. default y if CPU_FEROCEON
  938. help
  939. Implement faster copy_to_user and clear_user methods for CPU
  940. cores where a 8-word STM instruction give significantly higher
  941. memory write throughput than a sequence of individual 32bit stores.
  942. A possible side effect is a slight increase in scheduling latency
  943. between threads sharing the same address space if they invoke
  944. such copy operations with large buffers.
  945. However, if the CPU data cache is using a write-allocate mode,
  946. this option is unlikely to provide any performance gain.
  947. endmenu
  948. menu "Boot options"
  949. # Compressed boot loader in ROM. Yes, we really want to ask about
  950. # TEXT and BSS so we preserve their values in the config files.
  951. config ZBOOT_ROM_TEXT
  952. hex "Compressed ROM boot loader base address"
  953. default "0"
  954. help
  955. The physical address at which the ROM-able zImage is to be
  956. placed in the target. Platforms which normally make use of
  957. ROM-able zImage formats normally set this to a suitable
  958. value in their defconfig file.
  959. If ZBOOT_ROM is not enabled, this has no effect.
  960. config ZBOOT_ROM_BSS
  961. hex "Compressed ROM boot loader BSS address"
  962. default "0"
  963. help
  964. The base address of an area of read/write memory in the target
  965. for the ROM-able zImage which must be available while the
  966. decompressor is running. It must be large enough to hold the
  967. entire decompressed kernel plus an additional 128 KiB.
  968. Platforms which normally make use of ROM-able zImage formats
  969. normally set this to a suitable value in their defconfig file.
  970. If ZBOOT_ROM is not enabled, this has no effect.
  971. config ZBOOT_ROM
  972. bool "Compressed boot loader in ROM/flash"
  973. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  974. help
  975. Say Y here if you intend to execute your compressed kernel image
  976. (zImage) directly from ROM or flash. If unsure, say N.
  977. config CMDLINE
  978. string "Default kernel command string"
  979. default ""
  980. help
  981. On some architectures (EBSA110 and CATS), there is currently no way
  982. for the boot loader to pass arguments to the kernel. For these
  983. architectures, you should supply some command-line options at build
  984. time by entering them here. As a minimum, you should specify the
  985. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  986. config XIP_KERNEL
  987. bool "Kernel Execute-In-Place from ROM"
  988. depends on !ZBOOT_ROM
  989. help
  990. Execute-In-Place allows the kernel to run from non-volatile storage
  991. directly addressable by the CPU, such as NOR flash. This saves RAM
  992. space since the text section of the kernel is not loaded from flash
  993. to RAM. Read-write sections, such as the data section and stack,
  994. are still copied to RAM. The XIP kernel is not compressed since
  995. it has to run directly from flash, so it will take more space to
  996. store it. The flash address used to link the kernel object files,
  997. and for storing it, is configuration dependent. Therefore, if you
  998. say Y here, you must know the proper physical address where to
  999. store the kernel image depending on your own flash memory usage.
  1000. Also note that the make target becomes "make xipImage" rather than
  1001. "make zImage" or "make Image". The final kernel binary to put in
  1002. ROM memory will be arch/arm/boot/xipImage.
  1003. If unsure, say N.
  1004. config XIP_PHYS_ADDR
  1005. hex "XIP Kernel Physical Location"
  1006. depends on XIP_KERNEL
  1007. default "0x00080000"
  1008. help
  1009. This is the physical address in your flash memory the kernel will
  1010. be linked for and stored to. This address is dependent on your
  1011. own flash usage.
  1012. config KEXEC
  1013. bool "Kexec system call (EXPERIMENTAL)"
  1014. depends on EXPERIMENTAL
  1015. help
  1016. kexec is a system call that implements the ability to shutdown your
  1017. current kernel, and to start another kernel. It is like a reboot
  1018. but it is independent of the system firmware. And like a reboot
  1019. you can start any kernel with it, not just Linux.
  1020. It is an ongoing process to be certain the hardware in a machine
  1021. is properly shutdown, so do not be surprised if this code does not
  1022. initially work for you. It may help to enable device hotplugging
  1023. support.
  1024. config ATAGS_PROC
  1025. bool "Export atags in procfs"
  1026. depends on KEXEC
  1027. default y
  1028. help
  1029. Should the atags used to boot the kernel be exported in an "atags"
  1030. file in procfs. Useful with kexec.
  1031. endmenu
  1032. menu "CPU Power Management"
  1033. if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_PXA || ARCH_S3C64XX)
  1034. source "drivers/cpufreq/Kconfig"
  1035. config CPU_FREQ_SA1100
  1036. bool
  1037. depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
  1038. default y
  1039. config CPU_FREQ_SA1110
  1040. bool
  1041. depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
  1042. default y
  1043. config CPU_FREQ_INTEGRATOR
  1044. tristate "CPUfreq driver for ARM Integrator CPUs"
  1045. depends on ARCH_INTEGRATOR && CPU_FREQ
  1046. default y
  1047. help
  1048. This enables the CPUfreq driver for ARM Integrator CPUs.
  1049. For details, take a look at <file:Documentation/cpu-freq>.
  1050. If in doubt, say Y.
  1051. config CPU_FREQ_PXA
  1052. bool
  1053. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1054. default y
  1055. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1056. config CPU_FREQ_S3C64XX
  1057. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1058. depends on CPU_FREQ && CPU_S3C6410
  1059. endif
  1060. source "drivers/cpuidle/Kconfig"
  1061. endmenu
  1062. menu "Floating point emulation"
  1063. comment "At least one emulation must be selected"
  1064. config FPE_NWFPE
  1065. bool "NWFPE math emulation"
  1066. depends on !AEABI || OABI_COMPAT
  1067. ---help---
  1068. Say Y to include the NWFPE floating point emulator in the kernel.
  1069. This is necessary to run most binaries. Linux does not currently
  1070. support floating point hardware so you need to say Y here even if
  1071. your machine has an FPA or floating point co-processor podule.
  1072. You may say N here if you are going to load the Acorn FPEmulator
  1073. early in the bootup.
  1074. config FPE_NWFPE_XP
  1075. bool "Support extended precision"
  1076. depends on FPE_NWFPE
  1077. help
  1078. Say Y to include 80-bit support in the kernel floating-point
  1079. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1080. Note that gcc does not generate 80-bit operations by default,
  1081. so in most cases this option only enlarges the size of the
  1082. floating point emulator without any good reason.
  1083. You almost surely want to say N here.
  1084. config FPE_FASTFPE
  1085. bool "FastFPE math emulation (EXPERIMENTAL)"
  1086. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1087. ---help---
  1088. Say Y here to include the FAST floating point emulator in the kernel.
  1089. This is an experimental much faster emulator which now also has full
  1090. precision for the mantissa. It does not support any exceptions.
  1091. It is very simple, and approximately 3-6 times faster than NWFPE.
  1092. It should be sufficient for most programs. It may be not suitable
  1093. for scientific calculations, but you have to check this for yourself.
  1094. If you do not feel you need a faster FP emulation you should better
  1095. choose NWFPE.
  1096. config VFP
  1097. bool "VFP-format floating point maths"
  1098. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1099. help
  1100. Say Y to include VFP support code in the kernel. This is needed
  1101. if your hardware includes a VFP unit.
  1102. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1103. release notes and additional status information.
  1104. Say N if your target does not have VFP hardware.
  1105. config VFPv3
  1106. bool
  1107. depends on VFP
  1108. default y if CPU_V7
  1109. config NEON
  1110. bool "Advanced SIMD (NEON) Extension support"
  1111. depends on VFPv3 && CPU_V7
  1112. help
  1113. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1114. Extension.
  1115. endmenu
  1116. menu "Userspace binary formats"
  1117. source "fs/Kconfig.binfmt"
  1118. config ARTHUR
  1119. tristate "RISC OS personality"
  1120. depends on !AEABI
  1121. help
  1122. Say Y here to include the kernel code necessary if you want to run
  1123. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1124. experimental; if this sounds frightening, say N and sleep in peace.
  1125. You can also say M here to compile this support as a module (which
  1126. will be called arthur).
  1127. endmenu
  1128. menu "Power management options"
  1129. source "kernel/power/Kconfig"
  1130. config ARCH_SUSPEND_POSSIBLE
  1131. def_bool y
  1132. endmenu
  1133. source "net/Kconfig"
  1134. menu "Device Drivers"
  1135. source "drivers/base/Kconfig"
  1136. source "drivers/connector/Kconfig"
  1137. if ALIGNMENT_TRAP || !CPU_CP15_MMU
  1138. source "drivers/mtd/Kconfig"
  1139. endif
  1140. source "drivers/parport/Kconfig"
  1141. source "drivers/pnp/Kconfig"
  1142. source "drivers/block/Kconfig"
  1143. # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
  1144. source "drivers/misc/Kconfig"
  1145. source "drivers/ide/Kconfig"
  1146. source "drivers/scsi/Kconfig"
  1147. source "drivers/ata/Kconfig"
  1148. source "drivers/md/Kconfig"
  1149. source "drivers/message/fusion/Kconfig"
  1150. source "drivers/ieee1394/Kconfig"
  1151. source "drivers/message/i2o/Kconfig"
  1152. source "drivers/net/Kconfig"
  1153. source "drivers/isdn/Kconfig"
  1154. # input before char - char/joystick depends on it. As does USB.
  1155. source "drivers/input/Kconfig"
  1156. source "drivers/char/Kconfig"
  1157. source "drivers/i2c/Kconfig"
  1158. source "drivers/spi/Kconfig"
  1159. source "drivers/gpio/Kconfig"
  1160. source "drivers/w1/Kconfig"
  1161. source "drivers/power/Kconfig"
  1162. source "drivers/hwmon/Kconfig"
  1163. source "drivers/thermal/Kconfig"
  1164. source "drivers/watchdog/Kconfig"
  1165. source "drivers/ssb/Kconfig"
  1166. #source "drivers/l3/Kconfig"
  1167. source "drivers/mfd/Kconfig"
  1168. source "drivers/media/Kconfig"
  1169. source "drivers/video/Kconfig"
  1170. source "sound/Kconfig"
  1171. source "drivers/hid/Kconfig"
  1172. source "drivers/usb/Kconfig"
  1173. source "drivers/uwb/Kconfig"
  1174. source "drivers/mmc/Kconfig"
  1175. source "drivers/memstick/Kconfig"
  1176. source "drivers/accessibility/Kconfig"
  1177. source "drivers/leds/Kconfig"
  1178. source "drivers/rtc/Kconfig"
  1179. source "drivers/dma/Kconfig"
  1180. source "drivers/dca/Kconfig"
  1181. source "drivers/auxdisplay/Kconfig"
  1182. source "drivers/regulator/Kconfig"
  1183. source "drivers/uio/Kconfig"
  1184. source "drivers/staging/Kconfig"
  1185. endmenu
  1186. source "fs/Kconfig"
  1187. source "arch/arm/Kconfig.debug"
  1188. source "security/Kconfig"
  1189. source "crypto/Kconfig"
  1190. source "lib/Kconfig"