Kconfig 43 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662
  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 GENERIC_ATOMIC64 if (!CPU_32v6K)
  14. select HAVE_OPROFILE
  15. select HAVE_ARCH_KGDB
  16. select HAVE_KPROBES if (!XIP_KERNEL)
  17. select HAVE_KRETPROBES if (HAVE_KPROBES)
  18. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_PERF_EVENTS
  23. select PERF_USE_VMALLOC
  24. help
  25. The ARM series is a line of low-power-consumption RISC chip designs
  26. licensed by ARM Ltd and targeted at embedded applications and
  27. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  28. manufactured, but legacy ARM-based PC hardware remains popular in
  29. Europe. There is an ARM Linux project with a web page at
  30. <http://www.arm.linux.org.uk/>.
  31. config HAVE_PWM
  32. bool
  33. config SYS_SUPPORTS_APM_EMULATION
  34. bool
  35. config GENERIC_GPIO
  36. bool
  37. config GENERIC_TIME
  38. bool
  39. config GENERIC_CLOCKEVENTS
  40. bool
  41. config GENERIC_CLOCKEVENTS_BROADCAST
  42. bool
  43. depends on GENERIC_CLOCKEVENTS
  44. default y if SMP && !LOCAL_TIMERS
  45. config HAVE_TCM
  46. bool
  47. select GENERIC_ALLOCATOR
  48. config HAVE_PROC_CPU
  49. bool
  50. config NO_IOPORT
  51. bool
  52. config EISA
  53. bool
  54. ---help---
  55. The Extended Industry Standard Architecture (EISA) bus was
  56. developed as an open alternative to the IBM MicroChannel bus.
  57. The EISA bus provided some of the features of the IBM MicroChannel
  58. bus while maintaining backward compatibility with cards made for
  59. the older ISA bus. The EISA bus saw limited use between 1988 and
  60. 1995 when it was made obsolete by the PCI bus.
  61. Say Y here if you are building a kernel for an EISA-based machine.
  62. Otherwise, say N.
  63. config SBUS
  64. bool
  65. config MCA
  66. bool
  67. help
  68. MicroChannel Architecture is found in some IBM PS/2 machines and
  69. laptops. It is a bus system similar to PCI or ISA. See
  70. <file:Documentation/mca.txt> (and especially the web page given
  71. there) before attempting to build an MCA bus kernel.
  72. config GENERIC_HARDIRQS
  73. bool
  74. default y
  75. config STACKTRACE_SUPPORT
  76. bool
  77. default y
  78. config HAVE_LATENCYTOP_SUPPORT
  79. bool
  80. depends on !SMP
  81. default y
  82. config LOCKDEP_SUPPORT
  83. bool
  84. default y
  85. config TRACE_IRQFLAGS_SUPPORT
  86. bool
  87. default y
  88. config HARDIRQS_SW_RESEND
  89. bool
  90. default y
  91. config GENERIC_IRQ_PROBE
  92. bool
  93. default y
  94. config GENERIC_LOCKBREAK
  95. bool
  96. default y
  97. depends on SMP && PREEMPT
  98. config RWSEM_GENERIC_SPINLOCK
  99. bool
  100. default y
  101. config RWSEM_XCHGADD_ALGORITHM
  102. bool
  103. config ARCH_HAS_ILOG2_U32
  104. bool
  105. config ARCH_HAS_ILOG2_U64
  106. bool
  107. config ARCH_HAS_CPUFREQ
  108. bool
  109. help
  110. Internal node to signify that the ARCH has CPUFREQ support
  111. and that the relevant menu configurations are displayed for
  112. it.
  113. config GENERIC_HWEIGHT
  114. bool
  115. default y
  116. config GENERIC_CALIBRATE_DELAY
  117. bool
  118. default y
  119. config ARCH_MAY_HAVE_PC_FDC
  120. bool
  121. config ZONE_DMA
  122. bool
  123. config NEED_DMA_MAP_STATE
  124. def_bool y
  125. config GENERIC_ISA_DMA
  126. bool
  127. config FIQ
  128. bool
  129. config ARCH_MTD_XIP
  130. bool
  131. config GENERIC_HARDIRQS_NO__DO_IRQ
  132. def_bool y
  133. config ARM_L1_CACHE_SHIFT_6
  134. bool
  135. help
  136. Setting ARM L1 cache line size to 64 Bytes.
  137. if OPROFILE
  138. config OPROFILE_ARMV6
  139. def_bool y
  140. depends on CPU_V6 && !SMP
  141. select OPROFILE_ARM11_CORE
  142. config OPROFILE_MPCORE
  143. def_bool y
  144. depends on CPU_V6 && SMP
  145. select OPROFILE_ARM11_CORE
  146. config OPROFILE_ARM11_CORE
  147. bool
  148. config OPROFILE_ARMV7
  149. def_bool y
  150. depends on CPU_V7 && !SMP
  151. bool
  152. endif
  153. config VECTORS_BASE
  154. hex
  155. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  156. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  157. default 0x00000000
  158. help
  159. The base address of exception vectors.
  160. source "init/Kconfig"
  161. source "kernel/Kconfig.freezer"
  162. menu "System Type"
  163. config MMU
  164. bool "MMU-based Paged Memory Management Support"
  165. default y
  166. help
  167. Select if you want MMU-based virtualised addressing space
  168. support by paged memory management. If unsure, say 'Y'.
  169. #
  170. # The "ARM system type" choice list is ordered alphabetically by option
  171. # text. Please add new entries in the option alphabetic order.
  172. #
  173. choice
  174. prompt "ARM system type"
  175. default ARCH_VERSATILE
  176. config ARCH_AAEC2000
  177. bool "Agilent AAEC-2000 based"
  178. select CPU_ARM920T
  179. select ARM_AMBA
  180. select HAVE_CLK
  181. help
  182. This enables support for systems based on the Agilent AAEC-2000
  183. config ARCH_INTEGRATOR
  184. bool "ARM Ltd. Integrator family"
  185. select ARM_AMBA
  186. select ARCH_HAS_CPUFREQ
  187. select HAVE_CLK
  188. select COMMON_CLKDEV
  189. select ICST525
  190. help
  191. Support for ARM's Integrator platform.
  192. config ARCH_REALVIEW
  193. bool "ARM Ltd. RealView family"
  194. select ARM_AMBA
  195. select HAVE_CLK
  196. select COMMON_CLKDEV
  197. select ICST307
  198. select GENERIC_TIME
  199. select GENERIC_CLOCKEVENTS
  200. select ARCH_WANT_OPTIONAL_GPIOLIB
  201. select GPIO_PL061 if GPIOLIB
  202. help
  203. This enables support for ARM Ltd RealView boards.
  204. config ARCH_VERSATILE
  205. bool "ARM Ltd. Versatile family"
  206. select ARM_AMBA
  207. select ARM_VIC
  208. select HAVE_CLK
  209. select COMMON_CLKDEV
  210. select ICST307
  211. select GENERIC_TIME
  212. select GENERIC_CLOCKEVENTS
  213. select ARCH_WANT_OPTIONAL_GPIOLIB
  214. help
  215. This enables support for ARM Ltd Versatile board.
  216. config ARCH_AT91
  217. bool "Atmel AT91"
  218. select GENERIC_GPIO
  219. select ARCH_REQUIRE_GPIOLIB
  220. select HAVE_CLK
  221. help
  222. This enables support for systems based on the Atmel AT91RM9200,
  223. AT91SAM9 and AT91CAP9 processors.
  224. config ARCH_BCMRING
  225. bool "Broadcom BCMRING"
  226. depends on MMU
  227. select CPU_V6
  228. select ARM_AMBA
  229. select COMMON_CLKDEV
  230. select GENERIC_TIME
  231. select GENERIC_CLOCKEVENTS
  232. select ARCH_WANT_OPTIONAL_GPIOLIB
  233. help
  234. Support for Broadcom's BCMRing platform.
  235. config ARCH_CLPS711X
  236. bool "Cirrus Logic CLPS711x/EP721x-based"
  237. select CPU_ARM720T
  238. help
  239. Support for Cirrus Logic 711x/721x based boards.
  240. config ARCH_GEMINI
  241. bool "Cortina Systems Gemini"
  242. select CPU_FA526
  243. select GENERIC_GPIO
  244. select ARCH_REQUIRE_GPIOLIB
  245. help
  246. Support for the Cortina Systems Gemini family SoCs
  247. config ARCH_EBSA110
  248. bool "EBSA-110"
  249. select CPU_SA110
  250. select ISA
  251. select NO_IOPORT
  252. help
  253. This is an evaluation board for the StrongARM processor available
  254. from Digital. It has limited hardware on-board, including an
  255. Ethernet interface, two PCMCIA sockets, two serial ports and a
  256. parallel port.
  257. config ARCH_EP93XX
  258. bool "EP93xx-based"
  259. select CPU_ARM920T
  260. select ARM_AMBA
  261. select ARM_VIC
  262. select GENERIC_GPIO
  263. select HAVE_CLK
  264. select COMMON_CLKDEV
  265. select ARCH_REQUIRE_GPIOLIB
  266. select ARCH_HAS_HOLES_MEMORYMODEL
  267. help
  268. This enables support for the Cirrus EP93xx series of CPUs.
  269. config ARCH_FOOTBRIDGE
  270. bool "FootBridge"
  271. select CPU_SA110
  272. select FOOTBRIDGE
  273. help
  274. Support for systems based on the DC21285 companion chip
  275. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  276. config ARCH_MXC
  277. bool "Freescale MXC/iMX-based"
  278. select GENERIC_TIME
  279. select GENERIC_CLOCKEVENTS
  280. select ARCH_REQUIRE_GPIOLIB
  281. select HAVE_CLK
  282. select COMMON_CLKDEV
  283. help
  284. Support for Freescale MXC/iMX-based family of processors
  285. config ARCH_STMP3XXX
  286. bool "Freescale STMP3xxx"
  287. select CPU_ARM926T
  288. select HAVE_CLK
  289. select COMMON_CLKDEV
  290. select ARCH_REQUIRE_GPIOLIB
  291. select GENERIC_TIME
  292. select GENERIC_CLOCKEVENTS
  293. select GENERIC_GPIO
  294. select USB_ARCH_HAS_EHCI
  295. help
  296. Support for systems based on the Freescale 3xxx CPUs.
  297. config ARCH_NETX
  298. bool "Hilscher NetX based"
  299. select CPU_ARM926T
  300. select ARM_VIC
  301. select GENERIC_CLOCKEVENTS
  302. select GENERIC_TIME
  303. help
  304. This enables support for systems based on the Hilscher NetX Soc
  305. config ARCH_H720X
  306. bool "Hynix HMS720x-based"
  307. select CPU_ARM720T
  308. select ISA_DMA_API
  309. help
  310. This enables support for systems based on the Hynix HMS720x
  311. config ARCH_IOP13XX
  312. bool "IOP13xx-based"
  313. depends on MMU
  314. select CPU_XSC3
  315. select PLAT_IOP
  316. select PCI
  317. select ARCH_SUPPORTS_MSI
  318. select VMSPLIT_1G
  319. help
  320. Support for Intel's IOP13XX (XScale) family of processors.
  321. config ARCH_IOP32X
  322. bool "IOP32x-based"
  323. depends on MMU
  324. select CPU_XSCALE
  325. select PLAT_IOP
  326. select PCI
  327. select GENERIC_GPIO
  328. select ARCH_REQUIRE_GPIOLIB
  329. help
  330. Support for Intel's 80219 and IOP32X (XScale) family of
  331. processors.
  332. config ARCH_IOP33X
  333. bool "IOP33x-based"
  334. depends on MMU
  335. select CPU_XSCALE
  336. select PLAT_IOP
  337. select PCI
  338. select GENERIC_GPIO
  339. select ARCH_REQUIRE_GPIOLIB
  340. help
  341. Support for Intel's IOP33X (XScale) family of processors.
  342. config ARCH_IXP23XX
  343. bool "IXP23XX-based"
  344. depends on MMU
  345. select CPU_XSC3
  346. select PCI
  347. help
  348. Support for Intel's IXP23xx (XScale) family of processors.
  349. config ARCH_IXP2000
  350. bool "IXP2400/2800-based"
  351. depends on MMU
  352. select CPU_XSCALE
  353. select PCI
  354. help
  355. Support for Intel's IXP2400/2800 (XScale) family of processors.
  356. config ARCH_IXP4XX
  357. bool "IXP4xx-based"
  358. depends on MMU
  359. select CPU_XSCALE
  360. select GENERIC_GPIO
  361. select GENERIC_TIME
  362. select GENERIC_CLOCKEVENTS
  363. select DMABOUNCE if PCI
  364. help
  365. Support for Intel's IXP4XX (XScale) family of processors.
  366. config ARCH_L7200
  367. bool "LinkUp-L7200"
  368. select CPU_ARM720T
  369. select FIQ
  370. help
  371. Say Y here if you intend to run this kernel on a LinkUp Systems
  372. L7200 Software Development Board which uses an ARM720T processor.
  373. Information on this board can be obtained at:
  374. <http://www.linkupsys.com/>
  375. If you have any questions or comments about the Linux kernel port
  376. to this board, send e-mail to <sjhill@cotw.com>.
  377. config ARCH_DOVE
  378. bool "Marvell Dove"
  379. select PCI
  380. select GENERIC_GPIO
  381. select ARCH_REQUIRE_GPIOLIB
  382. select GENERIC_TIME
  383. select GENERIC_CLOCKEVENTS
  384. select PLAT_ORION
  385. help
  386. Support for the Marvell Dove SoC 88AP510
  387. config ARCH_KIRKWOOD
  388. bool "Marvell Kirkwood"
  389. select CPU_FEROCEON
  390. select PCI
  391. select GENERIC_GPIO
  392. select ARCH_REQUIRE_GPIOLIB
  393. select GENERIC_TIME
  394. select GENERIC_CLOCKEVENTS
  395. select PLAT_ORION
  396. help
  397. Support for the following Marvell Kirkwood series SoCs:
  398. 88F6180, 88F6192 and 88F6281.
  399. config ARCH_LOKI
  400. bool "Marvell Loki (88RC8480)"
  401. select CPU_FEROCEON
  402. select GENERIC_TIME
  403. select GENERIC_CLOCKEVENTS
  404. select PLAT_ORION
  405. help
  406. Support for the Marvell Loki (88RC8480) SoC.
  407. config ARCH_MV78XX0
  408. bool "Marvell MV78xx0"
  409. select CPU_FEROCEON
  410. select PCI
  411. select GENERIC_GPIO
  412. select ARCH_REQUIRE_GPIOLIB
  413. select GENERIC_TIME
  414. select GENERIC_CLOCKEVENTS
  415. select PLAT_ORION
  416. help
  417. Support for the following Marvell MV78xx0 series SoCs:
  418. MV781x0, MV782x0.
  419. config ARCH_ORION5X
  420. bool "Marvell Orion"
  421. depends on MMU
  422. select CPU_FEROCEON
  423. select PCI
  424. select GENERIC_GPIO
  425. select ARCH_REQUIRE_GPIOLIB
  426. select GENERIC_TIME
  427. select GENERIC_CLOCKEVENTS
  428. select PLAT_ORION
  429. help
  430. Support for the following Marvell Orion 5x series SoCs:
  431. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  432. Orion-2 (5281), Orion-1-90 (6183).
  433. config ARCH_MMP
  434. bool "Marvell PXA168/910/MMP2"
  435. depends on MMU
  436. select GENERIC_GPIO
  437. select ARCH_REQUIRE_GPIOLIB
  438. select HAVE_CLK
  439. select COMMON_CLKDEV
  440. select GENERIC_TIME
  441. select GENERIC_CLOCKEVENTS
  442. select TICK_ONESHOT
  443. select PLAT_PXA
  444. help
  445. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  446. config ARCH_KS8695
  447. bool "Micrel/Kendin KS8695"
  448. select CPU_ARM922T
  449. select GENERIC_GPIO
  450. select ARCH_REQUIRE_GPIOLIB
  451. help
  452. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  453. System-on-Chip devices.
  454. config ARCH_NS9XXX
  455. bool "NetSilicon NS9xxx"
  456. select CPU_ARM926T
  457. select GENERIC_GPIO
  458. select GENERIC_TIME
  459. select GENERIC_CLOCKEVENTS
  460. select HAVE_CLK
  461. help
  462. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  463. System.
  464. <http://www.digi.com/products/microprocessors/index.jsp>
  465. config ARCH_W90X900
  466. bool "Nuvoton W90X900 CPU"
  467. select CPU_ARM926T
  468. select ARCH_REQUIRE_GPIOLIB
  469. select GENERIC_GPIO
  470. select HAVE_CLK
  471. select COMMON_CLKDEV
  472. select GENERIC_TIME
  473. select GENERIC_CLOCKEVENTS
  474. help
  475. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  476. At present, the w90x900 has been renamed nuc900, regarding
  477. the ARM series product line, you can login the following
  478. link address to know more.
  479. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  480. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  481. config ARCH_NUC93X
  482. bool "Nuvoton NUC93X CPU"
  483. select CPU_ARM926T
  484. select HAVE_CLK
  485. select COMMON_CLKDEV
  486. help
  487. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  488. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  489. config ARCH_PNX4008
  490. bool "Philips Nexperia PNX4008 Mobile"
  491. select CPU_ARM926T
  492. select HAVE_CLK
  493. select COMMON_CLKDEV
  494. help
  495. This enables support for Philips PNX4008 mobile platform.
  496. config ARCH_PXA
  497. bool "PXA2xx/PXA3xx-based"
  498. depends on MMU
  499. select ARCH_MTD_XIP
  500. select ARCH_HAS_CPUFREQ
  501. select GENERIC_GPIO
  502. select HAVE_CLK
  503. select COMMON_CLKDEV
  504. select ARCH_REQUIRE_GPIOLIB
  505. select GENERIC_TIME
  506. select GENERIC_CLOCKEVENTS
  507. select TICK_ONESHOT
  508. select PLAT_PXA
  509. help
  510. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  511. config ARCH_MSM
  512. bool "Qualcomm MSM"
  513. select CPU_V6
  514. select GENERIC_TIME
  515. select GENERIC_CLOCKEVENTS
  516. help
  517. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  518. apps processor of the MSM7K and depends on a shared memory
  519. interface to the ARM9 modem processor which runs the baseband stack
  520. and controls some vital subsystems (clock and power control, etc).
  521. config ARCH_SHMOBILE
  522. bool "Renesas SH-Mobile"
  523. help
  524. Support for Renesas's SH-Mobile ARM platforms
  525. config ARCH_RPC
  526. bool "RiscPC"
  527. select ARCH_ACORN
  528. select FIQ
  529. select TIMER_ACORN
  530. select ARCH_MAY_HAVE_PC_FDC
  531. select HAVE_PATA_PLATFORM
  532. select ISA_DMA_API
  533. select NO_IOPORT
  534. select ARCH_SPARSEMEM_ENABLE
  535. help
  536. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  537. CD-ROM interface, serial and parallel port, and the floppy drive.
  538. config ARCH_SA1100
  539. bool "SA1100-based"
  540. select CPU_SA1100
  541. select ISA
  542. select ARCH_SPARSEMEM_ENABLE
  543. select ARCH_MTD_XIP
  544. select ARCH_HAS_CPUFREQ
  545. select CPU_FREQ
  546. select GENERIC_GPIO
  547. select GENERIC_TIME
  548. select GENERIC_CLOCKEVENTS
  549. select HAVE_CLK
  550. select TICK_ONESHOT
  551. select ARCH_REQUIRE_GPIOLIB
  552. help
  553. Support for StrongARM 11x0 based boards.
  554. config ARCH_S3C2410
  555. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  556. select GENERIC_GPIO
  557. select ARCH_HAS_CPUFREQ
  558. select HAVE_CLK
  559. help
  560. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  561. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  562. the Samsung SMDK2410 development board (and derivatives).
  563. config ARCH_S3C64XX
  564. bool "Samsung S3C64XX"
  565. select PLAT_SAMSUNG
  566. select CPU_V6
  567. select GENERIC_GPIO
  568. select ARM_VIC
  569. select HAVE_CLK
  570. select NO_IOPORT
  571. select ARCH_HAS_CPUFREQ
  572. select ARCH_REQUIRE_GPIOLIB
  573. select SAMSUNG_CLKSRC
  574. select SAMSUNG_IRQ_VIC_TIMER
  575. select SAMSUNG_IRQ_UART
  576. select S3C_GPIO_TRACK
  577. select S3C_GPIO_PULL_UPDOWN
  578. select S3C_GPIO_CFG_S3C24XX
  579. select S3C_GPIO_CFG_S3C64XX
  580. select S3C_DEV_NAND
  581. select USB_ARCH_HAS_OHCI
  582. select SAMSUNG_GPIOLIB_4BIT
  583. help
  584. Samsung S3C64XX series based systems
  585. config ARCH_S5P6440
  586. bool "Samsung S5P6440"
  587. select CPU_V6
  588. select GENERIC_GPIO
  589. select HAVE_CLK
  590. help
  591. Samsung S5P6440 CPU based systems
  592. config ARCH_S5P6442
  593. bool "Samsung S5P6442"
  594. select CPU_V6
  595. select GENERIC_GPIO
  596. select HAVE_CLK
  597. help
  598. Samsung S5P6442 CPU based systems
  599. config ARCH_S5PC1XX
  600. bool "Samsung S5PC1XX"
  601. select GENERIC_GPIO
  602. select HAVE_CLK
  603. select CPU_V7
  604. select ARM_L1_CACHE_SHIFT_6
  605. help
  606. Samsung S5PC1XX series based systems
  607. config ARCH_S5PV210
  608. bool "Samsung S5PV210/S5PC110"
  609. select CPU_V7
  610. select GENERIC_GPIO
  611. select HAVE_CLK
  612. select ARM_L1_CACHE_SHIFT_6
  613. help
  614. Samsung S5PV210/S5PC110 series based systems
  615. config ARCH_SHARK
  616. bool "Shark"
  617. select CPU_SA110
  618. select ISA
  619. select ISA_DMA
  620. select ZONE_DMA
  621. select PCI
  622. help
  623. Support for the StrongARM based Digital DNARD machine, also known
  624. as "Shark" (<http://www.shark-linux.de/shark.html>).
  625. config ARCH_LH7A40X
  626. bool "Sharp LH7A40X"
  627. select CPU_ARM922T
  628. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  629. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  630. help
  631. Say Y here for systems based on one of the Sharp LH7A40X
  632. System on a Chip processors. These CPUs include an ARM922T
  633. core with a wide array of integrated devices for
  634. hand-held and low-power applications.
  635. config ARCH_U300
  636. bool "ST-Ericsson U300 Series"
  637. depends on MMU
  638. select CPU_ARM926T
  639. select HAVE_TCM
  640. select ARM_AMBA
  641. select ARM_VIC
  642. select GENERIC_TIME
  643. select GENERIC_CLOCKEVENTS
  644. select HAVE_CLK
  645. select COMMON_CLKDEV
  646. select GENERIC_GPIO
  647. help
  648. Support for ST-Ericsson U300 series mobile platforms.
  649. config ARCH_U8500
  650. bool "ST-Ericsson U8500 Series"
  651. select CPU_V7
  652. select ARM_AMBA
  653. select GENERIC_TIME
  654. select GENERIC_CLOCKEVENTS
  655. select COMMON_CLKDEV
  656. help
  657. Support for ST-Ericsson's Ux500 architecture
  658. config ARCH_NOMADIK
  659. bool "STMicroelectronics Nomadik"
  660. select ARM_AMBA
  661. select ARM_VIC
  662. select CPU_ARM926T
  663. select HAVE_CLK
  664. select COMMON_CLKDEV
  665. select GENERIC_TIME
  666. select GENERIC_CLOCKEVENTS
  667. select GENERIC_GPIO
  668. select ARCH_REQUIRE_GPIOLIB
  669. help
  670. Support for the Nomadik platform by ST-Ericsson
  671. config ARCH_DAVINCI
  672. bool "TI DaVinci"
  673. select CPU_ARM926T
  674. select GENERIC_TIME
  675. select GENERIC_CLOCKEVENTS
  676. select GENERIC_GPIO
  677. select ARCH_REQUIRE_GPIOLIB
  678. select HAVE_CLK
  679. select ZONE_DMA
  680. select HAVE_IDE
  681. select COMMON_CLKDEV
  682. select GENERIC_ALLOCATOR
  683. select ARCH_HAS_HOLES_MEMORYMODEL
  684. help
  685. Support for TI's DaVinci platform.
  686. config ARCH_OMAP
  687. bool "TI OMAP"
  688. select GENERIC_GPIO
  689. select HAVE_CLK
  690. select ARCH_REQUIRE_GPIOLIB
  691. select ARCH_HAS_CPUFREQ
  692. select GENERIC_TIME
  693. select GENERIC_CLOCKEVENTS
  694. select ARCH_HAS_HOLES_MEMORYMODEL
  695. help
  696. Support for TI's OMAP platform (OMAP1 and OMAP2).
  697. endchoice
  698. #
  699. # This is sorted alphabetically by mach-* pathname. However, plat-*
  700. # Kconfigs may be included either alphabetically (according to the
  701. # plat- suffix) or along side the corresponding mach-* source.
  702. #
  703. source "arch/arm/mach-aaec2000/Kconfig"
  704. source "arch/arm/mach-at91/Kconfig"
  705. source "arch/arm/mach-bcmring/Kconfig"
  706. source "arch/arm/mach-clps711x/Kconfig"
  707. source "arch/arm/mach-davinci/Kconfig"
  708. source "arch/arm/mach-dove/Kconfig"
  709. source "arch/arm/mach-ep93xx/Kconfig"
  710. source "arch/arm/mach-footbridge/Kconfig"
  711. source "arch/arm/mach-gemini/Kconfig"
  712. source "arch/arm/mach-h720x/Kconfig"
  713. source "arch/arm/mach-integrator/Kconfig"
  714. source "arch/arm/mach-iop32x/Kconfig"
  715. source "arch/arm/mach-iop33x/Kconfig"
  716. source "arch/arm/mach-iop13xx/Kconfig"
  717. source "arch/arm/mach-ixp4xx/Kconfig"
  718. source "arch/arm/mach-ixp2000/Kconfig"
  719. source "arch/arm/mach-ixp23xx/Kconfig"
  720. source "arch/arm/mach-kirkwood/Kconfig"
  721. source "arch/arm/mach-ks8695/Kconfig"
  722. source "arch/arm/mach-lh7a40x/Kconfig"
  723. source "arch/arm/mach-loki/Kconfig"
  724. source "arch/arm/mach-msm/Kconfig"
  725. source "arch/arm/mach-mv78xx0/Kconfig"
  726. source "arch/arm/plat-mxc/Kconfig"
  727. source "arch/arm/mach-netx/Kconfig"
  728. source "arch/arm/mach-nomadik/Kconfig"
  729. source "arch/arm/plat-nomadik/Kconfig"
  730. source "arch/arm/mach-ns9xxx/Kconfig"
  731. source "arch/arm/mach-nuc93x/Kconfig"
  732. source "arch/arm/plat-omap/Kconfig"
  733. source "arch/arm/mach-omap1/Kconfig"
  734. source "arch/arm/mach-omap2/Kconfig"
  735. source "arch/arm/mach-orion5x/Kconfig"
  736. source "arch/arm/mach-pxa/Kconfig"
  737. source "arch/arm/plat-pxa/Kconfig"
  738. source "arch/arm/mach-mmp/Kconfig"
  739. source "arch/arm/mach-realview/Kconfig"
  740. source "arch/arm/mach-sa1100/Kconfig"
  741. source "arch/arm/plat-samsung/Kconfig"
  742. source "arch/arm/plat-s3c24xx/Kconfig"
  743. source "arch/arm/plat-s5p/Kconfig"
  744. source "arch/arm/plat-s5pc1xx/Kconfig"
  745. if ARCH_S3C2410
  746. source "arch/arm/mach-s3c2400/Kconfig"
  747. source "arch/arm/mach-s3c2410/Kconfig"
  748. source "arch/arm/mach-s3c2412/Kconfig"
  749. source "arch/arm/mach-s3c2440/Kconfig"
  750. source "arch/arm/mach-s3c2443/Kconfig"
  751. endif
  752. if ARCH_S3C64XX
  753. source "arch/arm/mach-s3c64xx/Kconfig"
  754. endif
  755. source "arch/arm/mach-s5p6440/Kconfig"
  756. source "arch/arm/mach-s5p6442/Kconfig"
  757. if ARCH_S5PC1XX
  758. source "arch/arm/mach-s5pc100/Kconfig"
  759. endif
  760. source "arch/arm/mach-s5pv210/Kconfig"
  761. source "arch/arm/mach-shmobile/Kconfig"
  762. source "arch/arm/plat-stmp3xxx/Kconfig"
  763. source "arch/arm/mach-u300/Kconfig"
  764. source "arch/arm/mach-ux500/Kconfig"
  765. source "arch/arm/mach-versatile/Kconfig"
  766. source "arch/arm/mach-w90x900/Kconfig"
  767. # Definitions to make life easier
  768. config ARCH_ACORN
  769. bool
  770. config PLAT_IOP
  771. bool
  772. select GENERIC_CLOCKEVENTS
  773. select GENERIC_TIME
  774. config PLAT_ORION
  775. bool
  776. config PLAT_PXA
  777. bool
  778. source arch/arm/mm/Kconfig
  779. config IWMMXT
  780. bool "Enable iWMMXt support"
  781. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  782. default y if PXA27x || PXA3xx || ARCH_MMP
  783. help
  784. Enable support for iWMMXt context switching at run time if
  785. running on a CPU that supports it.
  786. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  787. config XSCALE_PMU
  788. bool
  789. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  790. default y
  791. config CPU_HAS_PMU
  792. depends on CPU_V6 || CPU_V7 || XSCALE_PMU
  793. default y
  794. bool
  795. if !MMU
  796. source "arch/arm/Kconfig-nommu"
  797. endif
  798. config ARM_ERRATA_411920
  799. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  800. depends on CPU_V6 && !SMP
  801. help
  802. Invalidation of the Instruction Cache operation can
  803. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  804. It does not affect the MPCore. This option enables the ARM Ltd.
  805. recommended workaround.
  806. config ARM_ERRATA_430973
  807. bool "ARM errata: Stale prediction on replaced interworking branch"
  808. depends on CPU_V7
  809. help
  810. This option enables the workaround for the 430973 Cortex-A8
  811. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  812. interworking branch is replaced with another code sequence at the
  813. same virtual address, whether due to self-modifying code or virtual
  814. to physical address re-mapping, Cortex-A8 does not recover from the
  815. stale interworking branch prediction. This results in Cortex-A8
  816. executing the new code sequence in the incorrect ARM or Thumb state.
  817. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  818. and also flushes the branch target cache at every context switch.
  819. Note that setting specific bits in the ACTLR register may not be
  820. available in non-secure mode.
  821. config ARM_ERRATA_458693
  822. bool "ARM errata: Processor deadlock when a false hazard is created"
  823. depends on CPU_V7
  824. help
  825. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  826. erratum. For very specific sequences of memory operations, it is
  827. possible for a hazard condition intended for a cache line to instead
  828. be incorrectly associated with a different cache line. This false
  829. hazard might then cause a processor deadlock. The workaround enables
  830. the L1 caching of the NEON accesses and disables the PLD instruction
  831. in the ACTLR register. Note that setting specific bits in the ACTLR
  832. register may not be available in non-secure mode.
  833. config ARM_ERRATA_460075
  834. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  835. depends on CPU_V7
  836. help
  837. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  838. erratum. Any asynchronous access to the L2 cache may encounter a
  839. situation in which recent store transactions to the L2 cache are lost
  840. and overwritten with stale memory contents from external memory. The
  841. workaround disables the write-allocate mode for the L2 cache via the
  842. ACTLR register. Note that setting specific bits in the ACTLR register
  843. may not be available in non-secure mode.
  844. config PL310_ERRATA_588369
  845. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  846. depends on CACHE_L2X0 && ARCH_OMAP4
  847. help
  848. The PL310 L2 cache controller implements three types of Clean &
  849. Invalidate maintenance operations: by Physical Address
  850. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  851. They are architecturally defined to behave as the execution of a
  852. clean operation followed immediately by an invalidate operation,
  853. both performing to the same memory location. This functionality
  854. is not correctly implemented in PL310 as clean lines are not
  855. invalidated as a result of these operations. Note that this errata
  856. uses Texas Instrument's secure monitor api.
  857. endmenu
  858. source "arch/arm/common/Kconfig"
  859. config FORCE_MAX_ZONEORDER
  860. int
  861. depends on SA1111
  862. default "9"
  863. menu "Bus support"
  864. config ARM_AMBA
  865. bool
  866. config ISA
  867. bool
  868. help
  869. Find out whether you have ISA slots on your motherboard. ISA is the
  870. name of a bus system, i.e. the way the CPU talks to the other stuff
  871. inside your box. Other bus systems are PCI, EISA, MicroChannel
  872. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  873. newer boards don't support it. If you have ISA, say Y, otherwise N.
  874. # Select ISA DMA controller support
  875. config ISA_DMA
  876. bool
  877. select ISA_DMA_API
  878. # Select ISA DMA interface
  879. config ISA_DMA_API
  880. bool
  881. config PCI
  882. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  883. help
  884. Find out whether you have a PCI motherboard. PCI is the name of a
  885. bus system, i.e. the way the CPU talks to the other stuff inside
  886. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  887. VESA. If you have PCI, say Y, otherwise N.
  888. config PCI_SYSCALL
  889. def_bool PCI
  890. # Select the host bridge type
  891. config PCI_HOST_VIA82C505
  892. bool
  893. depends on PCI && ARCH_SHARK
  894. default y
  895. config PCI_HOST_ITE8152
  896. bool
  897. depends on PCI && MACH_ARMCORE
  898. default y
  899. select DMABOUNCE
  900. source "drivers/pci/Kconfig"
  901. source "drivers/pcmcia/Kconfig"
  902. endmenu
  903. menu "Kernel Features"
  904. source "kernel/time/Kconfig"
  905. config SMP
  906. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  907. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  908. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  909. depends on GENERIC_CLOCKEVENTS
  910. select USE_GENERIC_SMP_HELPERS
  911. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  912. help
  913. This enables support for systems with more than one CPU. If you have
  914. a system with only one CPU, like most personal computers, say N. If
  915. you have a system with more than one CPU, say Y.
  916. If you say N here, the kernel will run on single and multiprocessor
  917. machines, but will use only one CPU of a multiprocessor machine. If
  918. you say Y here, the kernel will run on many, but not all, single
  919. processor machines. On a single processor machine, the kernel will
  920. run faster if you say N here.
  921. See also <file:Documentation/i386/IO-APIC.txt>,
  922. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  923. <http://www.linuxdoc.org/docs.html#howto>.
  924. If you don't know what to do here, say N.
  925. config HAVE_ARM_SCU
  926. bool
  927. depends on SMP
  928. help
  929. This option enables support for the ARM system coherency unit
  930. config HAVE_ARM_TWD
  931. bool
  932. depends on SMP
  933. help
  934. This options enables support for the ARM timer and watchdog unit
  935. choice
  936. prompt "Memory split"
  937. default VMSPLIT_3G
  938. help
  939. Select the desired split between kernel and user memory.
  940. If you are not absolutely sure what you are doing, leave this
  941. option alone!
  942. config VMSPLIT_3G
  943. bool "3G/1G user/kernel split"
  944. config VMSPLIT_2G
  945. bool "2G/2G user/kernel split"
  946. config VMSPLIT_1G
  947. bool "1G/3G user/kernel split"
  948. endchoice
  949. config PAGE_OFFSET
  950. hex
  951. default 0x40000000 if VMSPLIT_1G
  952. default 0x80000000 if VMSPLIT_2G
  953. default 0xC0000000
  954. config NR_CPUS
  955. int "Maximum number of CPUs (2-32)"
  956. range 2 32
  957. depends on SMP
  958. default "4"
  959. config HOTPLUG_CPU
  960. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  961. depends on SMP && HOTPLUG && EXPERIMENTAL
  962. help
  963. Say Y here to experiment with turning CPUs off and on. CPUs
  964. can be controlled through /sys/devices/system/cpu.
  965. config LOCAL_TIMERS
  966. bool "Use local timer interrupts"
  967. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  968. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  969. default y
  970. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  971. help
  972. Enable support for local timers on SMP platforms, rather then the
  973. legacy IPI broadcast method. Local timers allows the system
  974. accounting to be spread across the timer interval, preventing a
  975. "thundering herd" at every timer tick.
  976. source kernel/Kconfig.preempt
  977. config HZ
  978. int
  979. default 128 if ARCH_L7200
  980. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
  981. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  982. default AT91_TIMER_HZ if ARCH_AT91
  983. default 100
  984. config THUMB2_KERNEL
  985. bool "Compile the kernel in Thumb-2 mode"
  986. depends on CPU_V7 && EXPERIMENTAL
  987. select AEABI
  988. select ARM_ASM_UNIFIED
  989. help
  990. By enabling this option, the kernel will be compiled in
  991. Thumb-2 mode. A compiler/assembler that understand the unified
  992. ARM-Thumb syntax is needed.
  993. If unsure, say N.
  994. config ARM_ASM_UNIFIED
  995. bool
  996. config AEABI
  997. bool "Use the ARM EABI to compile the kernel"
  998. help
  999. This option allows for the kernel to be compiled using the latest
  1000. ARM ABI (aka EABI). This is only useful if you are using a user
  1001. space environment that is also compiled with EABI.
  1002. Since there are major incompatibilities between the legacy ABI and
  1003. EABI, especially with regard to structure member alignment, this
  1004. option also changes the kernel syscall calling convention to
  1005. disambiguate both ABIs and allow for backward compatibility support
  1006. (selected with CONFIG_OABI_COMPAT).
  1007. To use this you need GCC version 4.0.0 or later.
  1008. config OABI_COMPAT
  1009. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1010. depends on AEABI && EXPERIMENTAL
  1011. default y
  1012. help
  1013. This option preserves the old syscall interface along with the
  1014. new (ARM EABI) one. It also provides a compatibility layer to
  1015. intercept syscalls that have structure arguments which layout
  1016. in memory differs between the legacy ABI and the new ARM EABI
  1017. (only for non "thumb" binaries). This option adds a tiny
  1018. overhead to all syscalls and produces a slightly larger kernel.
  1019. If you know you'll be using only pure EABI user space then you
  1020. can say N here. If this option is not selected and you attempt
  1021. to execute a legacy ABI binary then the result will be
  1022. UNPREDICTABLE (in fact it can be predicted that it won't work
  1023. at all). If in doubt say Y.
  1024. config ARCH_HAS_HOLES_MEMORYMODEL
  1025. bool
  1026. # Discontigmem is deprecated
  1027. config ARCH_DISCONTIGMEM_ENABLE
  1028. bool
  1029. config ARCH_SPARSEMEM_ENABLE
  1030. bool
  1031. config ARCH_SPARSEMEM_DEFAULT
  1032. def_bool ARCH_SPARSEMEM_ENABLE
  1033. config ARCH_SELECT_MEMORY_MODEL
  1034. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  1035. config NODES_SHIFT
  1036. int
  1037. default "4" if ARCH_LH7A40X
  1038. default "2"
  1039. depends on NEED_MULTIPLE_NODES
  1040. config HIGHMEM
  1041. bool "High Memory Support (EXPERIMENTAL)"
  1042. depends on MMU && EXPERIMENTAL
  1043. help
  1044. The address space of ARM processors is only 4 Gigabytes large
  1045. and it has to accommodate user address space, kernel address
  1046. space as well as some memory mapped IO. That means that, if you
  1047. have a large amount of physical memory and/or IO, not all of the
  1048. memory can be "permanently mapped" by the kernel. The physical
  1049. memory that is not permanently mapped is called "high memory".
  1050. Depending on the selected kernel/user memory split, minimum
  1051. vmalloc space and actual amount of RAM, you may not need this
  1052. option which should result in a slightly faster kernel.
  1053. If unsure, say n.
  1054. config HIGHPTE
  1055. bool "Allocate 2nd-level pagetables from highmem"
  1056. depends on HIGHMEM
  1057. depends on !OUTER_CACHE
  1058. config HW_PERF_EVENTS
  1059. bool "Enable hardware performance counter support for perf events"
  1060. depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
  1061. default y
  1062. help
  1063. Enable hardware performance counter support for perf events. If
  1064. disabled, perf events will use software events only.
  1065. source "mm/Kconfig"
  1066. config LEDS
  1067. bool "Timer and CPU usage LEDs"
  1068. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1069. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1070. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1071. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1072. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1073. ARCH_AT91 || ARCH_DAVINCI || \
  1074. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1075. help
  1076. If you say Y here, the LEDs on your machine will be used
  1077. to provide useful information about your current system status.
  1078. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1079. be able to select which LEDs are active using the options below. If
  1080. you are compiling a kernel for the EBSA-110 or the LART however, the
  1081. red LED will simply flash regularly to indicate that the system is
  1082. still functional. It is safe to say Y here if you have a CATS
  1083. system, but the driver will do nothing.
  1084. config LEDS_TIMER
  1085. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1086. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1087. || MACH_OMAP_PERSEUS2
  1088. depends on LEDS
  1089. depends on !GENERIC_CLOCKEVENTS
  1090. default y if ARCH_EBSA110
  1091. help
  1092. If you say Y here, one of the system LEDs (the green one on the
  1093. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1094. will flash regularly to indicate that the system is still
  1095. operational. This is mainly useful to kernel hackers who are
  1096. debugging unstable kernels.
  1097. The LART uses the same LED for both Timer LED and CPU usage LED
  1098. functions. You may choose to use both, but the Timer LED function
  1099. will overrule the CPU usage LED.
  1100. config LEDS_CPU
  1101. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1102. !ARCH_OMAP) \
  1103. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1104. || MACH_OMAP_PERSEUS2
  1105. depends on LEDS
  1106. help
  1107. If you say Y here, the red LED will be used to give a good real
  1108. time indication of CPU usage, by lighting whenever the idle task
  1109. is not currently executing.
  1110. The LART uses the same LED for both Timer LED and CPU usage LED
  1111. functions. You may choose to use both, but the Timer LED function
  1112. will overrule the CPU usage LED.
  1113. config ALIGNMENT_TRAP
  1114. bool
  1115. depends on CPU_CP15_MMU
  1116. default y if !ARCH_EBSA110
  1117. select HAVE_PROC_CPU if PROC_FS
  1118. help
  1119. ARM processors cannot fetch/store information which is not
  1120. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1121. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1122. fetch/store instructions will be emulated in software if you say
  1123. here, which has a severe performance impact. This is necessary for
  1124. correct operation of some network protocols. With an IP-only
  1125. configuration it is safe to say N, otherwise say Y.
  1126. config UACCESS_WITH_MEMCPY
  1127. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1128. depends on MMU && EXPERIMENTAL
  1129. default y if CPU_FEROCEON
  1130. help
  1131. Implement faster copy_to_user and clear_user methods for CPU
  1132. cores where a 8-word STM instruction give significantly higher
  1133. memory write throughput than a sequence of individual 32bit stores.
  1134. A possible side effect is a slight increase in scheduling latency
  1135. between threads sharing the same address space if they invoke
  1136. such copy operations with large buffers.
  1137. However, if the CPU data cache is using a write-allocate mode,
  1138. this option is unlikely to provide any performance gain.
  1139. endmenu
  1140. menu "Boot options"
  1141. # Compressed boot loader in ROM. Yes, we really want to ask about
  1142. # TEXT and BSS so we preserve their values in the config files.
  1143. config ZBOOT_ROM_TEXT
  1144. hex "Compressed ROM boot loader base address"
  1145. default "0"
  1146. help
  1147. The physical address at which the ROM-able zImage is to be
  1148. placed in the target. Platforms which normally make use of
  1149. ROM-able zImage formats normally set this to a suitable
  1150. value in their defconfig file.
  1151. If ZBOOT_ROM is not enabled, this has no effect.
  1152. config ZBOOT_ROM_BSS
  1153. hex "Compressed ROM boot loader BSS address"
  1154. default "0"
  1155. help
  1156. The base address of an area of read/write memory in the target
  1157. for the ROM-able zImage which must be available while the
  1158. decompressor is running. It must be large enough to hold the
  1159. entire decompressed kernel plus an additional 128 KiB.
  1160. Platforms which normally make use of ROM-able zImage formats
  1161. normally set this to a suitable value in their defconfig file.
  1162. If ZBOOT_ROM is not enabled, this has no effect.
  1163. config ZBOOT_ROM
  1164. bool "Compressed boot loader in ROM/flash"
  1165. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1166. help
  1167. Say Y here if you intend to execute your compressed kernel image
  1168. (zImage) directly from ROM or flash. If unsure, say N.
  1169. config CMDLINE
  1170. string "Default kernel command string"
  1171. default ""
  1172. help
  1173. On some architectures (EBSA110 and CATS), there is currently no way
  1174. for the boot loader to pass arguments to the kernel. For these
  1175. architectures, you should supply some command-line options at build
  1176. time by entering them here. As a minimum, you should specify the
  1177. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1178. config XIP_KERNEL
  1179. bool "Kernel Execute-In-Place from ROM"
  1180. depends on !ZBOOT_ROM
  1181. help
  1182. Execute-In-Place allows the kernel to run from non-volatile storage
  1183. directly addressable by the CPU, such as NOR flash. This saves RAM
  1184. space since the text section of the kernel is not loaded from flash
  1185. to RAM. Read-write sections, such as the data section and stack,
  1186. are still copied to RAM. The XIP kernel is not compressed since
  1187. it has to run directly from flash, so it will take more space to
  1188. store it. The flash address used to link the kernel object files,
  1189. and for storing it, is configuration dependent. Therefore, if you
  1190. say Y here, you must know the proper physical address where to
  1191. store the kernel image depending on your own flash memory usage.
  1192. Also note that the make target becomes "make xipImage" rather than
  1193. "make zImage" or "make Image". The final kernel binary to put in
  1194. ROM memory will be arch/arm/boot/xipImage.
  1195. If unsure, say N.
  1196. config XIP_PHYS_ADDR
  1197. hex "XIP Kernel Physical Location"
  1198. depends on XIP_KERNEL
  1199. default "0x00080000"
  1200. help
  1201. This is the physical address in your flash memory the kernel will
  1202. be linked for and stored to. This address is dependent on your
  1203. own flash usage.
  1204. config KEXEC
  1205. bool "Kexec system call (EXPERIMENTAL)"
  1206. depends on EXPERIMENTAL
  1207. help
  1208. kexec is a system call that implements the ability to shutdown your
  1209. current kernel, and to start another kernel. It is like a reboot
  1210. but it is independent of the system firmware. And like a reboot
  1211. you can start any kernel with it, not just Linux.
  1212. It is an ongoing process to be certain the hardware in a machine
  1213. is properly shutdown, so do not be surprised if this code does not
  1214. initially work for you. It may help to enable device hotplugging
  1215. support.
  1216. config ATAGS_PROC
  1217. bool "Export atags in procfs"
  1218. depends on KEXEC
  1219. default y
  1220. help
  1221. Should the atags used to boot the kernel be exported in an "atags"
  1222. file in procfs. Useful with kexec.
  1223. endmenu
  1224. menu "CPU Power Management"
  1225. if ARCH_HAS_CPUFREQ
  1226. source "drivers/cpufreq/Kconfig"
  1227. config CPU_FREQ_SA1100
  1228. bool
  1229. config CPU_FREQ_SA1110
  1230. bool
  1231. config CPU_FREQ_INTEGRATOR
  1232. tristate "CPUfreq driver for ARM Integrator CPUs"
  1233. depends on ARCH_INTEGRATOR && CPU_FREQ
  1234. default y
  1235. help
  1236. This enables the CPUfreq driver for ARM Integrator CPUs.
  1237. For details, take a look at <file:Documentation/cpu-freq>.
  1238. If in doubt, say Y.
  1239. config CPU_FREQ_PXA
  1240. bool
  1241. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1242. default y
  1243. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1244. config CPU_FREQ_S3C64XX
  1245. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1246. depends on CPU_FREQ && CPU_S3C6410
  1247. config CPU_FREQ_S3C
  1248. bool
  1249. help
  1250. Internal configuration node for common cpufreq on Samsung SoC
  1251. config CPU_FREQ_S3C24XX
  1252. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1253. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1254. select CPU_FREQ_S3C
  1255. help
  1256. This enables the CPUfreq driver for the Samsung S3C24XX family
  1257. of CPUs.
  1258. For details, take a look at <file:Documentation/cpu-freq>.
  1259. If in doubt, say N.
  1260. config CPU_FREQ_S3C24XX_PLL
  1261. bool "Support CPUfreq changing of PLL frequency"
  1262. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1263. help
  1264. Compile in support for changing the PLL frequency from the
  1265. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1266. after a frequency change, so by default it is not enabled.
  1267. This also means that the PLL tables for the selected CPU(s) will
  1268. be built which may increase the size of the kernel image.
  1269. config CPU_FREQ_S3C24XX_DEBUG
  1270. bool "Debug CPUfreq Samsung driver core"
  1271. depends on CPU_FREQ_S3C24XX
  1272. help
  1273. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1274. config CPU_FREQ_S3C24XX_IODEBUG
  1275. bool "Debug CPUfreq Samsung driver IO timing"
  1276. depends on CPU_FREQ_S3C24XX
  1277. help
  1278. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1279. config CPU_FREQ_S3C24XX_DEBUGFS
  1280. bool "Export debugfs for CPUFreq"
  1281. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1282. help
  1283. Export status information via debugfs.
  1284. endif
  1285. source "drivers/cpuidle/Kconfig"
  1286. endmenu
  1287. menu "Floating point emulation"
  1288. comment "At least one emulation must be selected"
  1289. config FPE_NWFPE
  1290. bool "NWFPE math emulation"
  1291. depends on !AEABI || OABI_COMPAT
  1292. ---help---
  1293. Say Y to include the NWFPE floating point emulator in the kernel.
  1294. This is necessary to run most binaries. Linux does not currently
  1295. support floating point hardware so you need to say Y here even if
  1296. your machine has an FPA or floating point co-processor podule.
  1297. You may say N here if you are going to load the Acorn FPEmulator
  1298. early in the bootup.
  1299. config FPE_NWFPE_XP
  1300. bool "Support extended precision"
  1301. depends on FPE_NWFPE
  1302. help
  1303. Say Y to include 80-bit support in the kernel floating-point
  1304. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1305. Note that gcc does not generate 80-bit operations by default,
  1306. so in most cases this option only enlarges the size of the
  1307. floating point emulator without any good reason.
  1308. You almost surely want to say N here.
  1309. config FPE_FASTFPE
  1310. bool "FastFPE math emulation (EXPERIMENTAL)"
  1311. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1312. ---help---
  1313. Say Y here to include the FAST floating point emulator in the kernel.
  1314. This is an experimental much faster emulator which now also has full
  1315. precision for the mantissa. It does not support any exceptions.
  1316. It is very simple, and approximately 3-6 times faster than NWFPE.
  1317. It should be sufficient for most programs. It may be not suitable
  1318. for scientific calculations, but you have to check this for yourself.
  1319. If you do not feel you need a faster FP emulation you should better
  1320. choose NWFPE.
  1321. config VFP
  1322. bool "VFP-format floating point maths"
  1323. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1324. help
  1325. Say Y to include VFP support code in the kernel. This is needed
  1326. if your hardware includes a VFP unit.
  1327. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1328. release notes and additional status information.
  1329. Say N if your target does not have VFP hardware.
  1330. config VFPv3
  1331. bool
  1332. depends on VFP
  1333. default y if CPU_V7
  1334. config NEON
  1335. bool "Advanced SIMD (NEON) Extension support"
  1336. depends on VFPv3 && CPU_V7
  1337. help
  1338. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1339. Extension.
  1340. endmenu
  1341. menu "Userspace binary formats"
  1342. source "fs/Kconfig.binfmt"
  1343. config ARTHUR
  1344. tristate "RISC OS personality"
  1345. depends on !AEABI
  1346. help
  1347. Say Y here to include the kernel code necessary if you want to run
  1348. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1349. experimental; if this sounds frightening, say N and sleep in peace.
  1350. You can also say M here to compile this support as a module (which
  1351. will be called arthur).
  1352. endmenu
  1353. menu "Power management options"
  1354. source "kernel/power/Kconfig"
  1355. config ARCH_SUSPEND_POSSIBLE
  1356. def_bool y
  1357. endmenu
  1358. source "net/Kconfig"
  1359. source "drivers/Kconfig"
  1360. source "fs/Kconfig"
  1361. source "arch/arm/Kconfig.debug"
  1362. source "security/Kconfig"
  1363. source "crypto/Kconfig"
  1364. source "lib/Kconfig"