Kconfig 52 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523152415251526152715281529153015311532153315341535153615371538153915401541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610161116121613161416151616161716181619162016211622162316241625162616271628162916301631163216331634163516361637163816391640164116421643164416451646164716481649165016511652165316541655165616571658165916601661166216631664166516661667166816691670167116721673167416751676167716781679168016811682168316841685168616871688168916901691169216931694169516961697169816991700170117021703170417051706170717081709171017111712171317141715171617171718171917201721172217231724172517261727172817291730173117321733173417351736173717381739174017411742174317441745174617471748174917501751175217531754175517561757175817591760176117621763176417651766176717681769177017711772177317741775177617771778177917801781178217831784178517861787178817891790179117921793179417951796179717981799180018011802180318041805180618071808180918101811181218131814181518161817181818191820182118221823182418251826182718281829183018311832183318341835183618371838183918401841184218431844184518461847184818491850185118521853185418551856185718581859186018611862186318641865186618671868186918701871187218731874187518761877187818791880188118821883188418851886188718881889189018911892189318941895189618971898189919001901190219031904190519061907190819091910191119121913191419151916191719181919
  1. config ARM
  2. bool
  3. default y
  4. select HAVE_AOUT
  5. select HAVE_DMA_API_DEBUG
  6. select HAVE_IDE
  7. select HAVE_MEMBLOCK
  8. select RTC_LIB
  9. select SYS_SUPPORTS_APM_EMULATION
  10. select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
  11. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  12. select HAVE_ARCH_KGDB
  13. select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
  14. select HAVE_KRETPROBES if (HAVE_KPROBES)
  15. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  16. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  17. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  18. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  19. select HAVE_GENERIC_DMA_COHERENT
  20. select HAVE_KERNEL_GZIP
  21. select HAVE_KERNEL_LZO
  22. select HAVE_KERNEL_LZMA
  23. select HAVE_IRQ_WORK
  24. select HAVE_PERF_EVENTS
  25. select PERF_USE_VMALLOC
  26. select HAVE_REGS_AND_STACK_ACCESS_API
  27. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
  28. select HAVE_C_RECORDMCOUNT
  29. select HAVE_GENERIC_HARDIRQS
  30. select HAVE_SPARSE_IRQ
  31. help
  32. The ARM series is a line of low-power-consumption RISC chip designs
  33. licensed by ARM Ltd and targeted at embedded applications and
  34. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  35. manufactured, but legacy ARM-based PC hardware remains popular in
  36. Europe. There is an ARM Linux project with a web page at
  37. <http://www.arm.linux.org.uk/>.
  38. config HAVE_PWM
  39. bool
  40. config MIGHT_HAVE_PCI
  41. bool
  42. config SYS_SUPPORTS_APM_EMULATION
  43. bool
  44. config HAVE_SCHED_CLOCK
  45. bool
  46. config GENERIC_GPIO
  47. bool
  48. config ARCH_USES_GETTIMEOFFSET
  49. bool
  50. default n
  51. config GENERIC_CLOCKEVENTS
  52. bool
  53. config GENERIC_CLOCKEVENTS_BROADCAST
  54. bool
  55. depends on GENERIC_CLOCKEVENTS
  56. default y if SMP
  57. config HAVE_TCM
  58. bool
  59. select GENERIC_ALLOCATOR
  60. config HAVE_PROC_CPU
  61. bool
  62. config NO_IOPORT
  63. bool
  64. config EISA
  65. bool
  66. ---help---
  67. The Extended Industry Standard Architecture (EISA) bus was
  68. developed as an open alternative to the IBM MicroChannel bus.
  69. The EISA bus provided some of the features of the IBM MicroChannel
  70. bus while maintaining backward compatibility with cards made for
  71. the older ISA bus. The EISA bus saw limited use between 1988 and
  72. 1995 when it was made obsolete by the PCI bus.
  73. Say Y here if you are building a kernel for an EISA-based machine.
  74. Otherwise, say N.
  75. config SBUS
  76. bool
  77. config MCA
  78. bool
  79. help
  80. MicroChannel Architecture is found in some IBM PS/2 machines and
  81. laptops. It is a bus system similar to PCI or ISA. See
  82. <file:Documentation/mca.txt> (and especially the web page given
  83. there) before attempting to build an MCA bus kernel.
  84. config STACKTRACE_SUPPORT
  85. bool
  86. default y
  87. config HAVE_LATENCYTOP_SUPPORT
  88. bool
  89. depends on !SMP
  90. default y
  91. config LOCKDEP_SUPPORT
  92. bool
  93. default y
  94. config TRACE_IRQFLAGS_SUPPORT
  95. bool
  96. default y
  97. config HARDIRQS_SW_RESEND
  98. bool
  99. default y
  100. config GENERIC_IRQ_PROBE
  101. bool
  102. default y
  103. config GENERIC_LOCKBREAK
  104. bool
  105. default y
  106. depends on SMP && PREEMPT
  107. config RWSEM_GENERIC_SPINLOCK
  108. bool
  109. default y
  110. config RWSEM_XCHGADD_ALGORITHM
  111. bool
  112. config ARCH_HAS_ILOG2_U32
  113. bool
  114. config ARCH_HAS_ILOG2_U64
  115. bool
  116. config ARCH_HAS_CPUFREQ
  117. bool
  118. help
  119. Internal node to signify that the ARCH has CPUFREQ support
  120. and that the relevant menu configurations are displayed for
  121. it.
  122. config ARCH_HAS_CPU_IDLE_WAIT
  123. def_bool y
  124. config GENERIC_HWEIGHT
  125. bool
  126. default y
  127. config GENERIC_CALIBRATE_DELAY
  128. bool
  129. default y
  130. config ARCH_MAY_HAVE_PC_FDC
  131. bool
  132. config ZONE_DMA
  133. bool
  134. config NEED_DMA_MAP_STATE
  135. def_bool y
  136. config GENERIC_ISA_DMA
  137. bool
  138. config FIQ
  139. bool
  140. config ARCH_MTD_XIP
  141. bool
  142. config ARM_L1_CACHE_SHIFT_6
  143. bool
  144. help
  145. Setting ARM L1 cache line size to 64 Bytes.
  146. config VECTORS_BASE
  147. hex
  148. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  149. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  150. default 0x00000000
  151. help
  152. The base address of exception vectors.
  153. source "init/Kconfig"
  154. source "kernel/Kconfig.freezer"
  155. menu "System Type"
  156. config MMU
  157. bool "MMU-based Paged Memory Management Support"
  158. default y
  159. help
  160. Select if you want MMU-based virtualised addressing space
  161. support by paged memory management. If unsure, say 'Y'.
  162. #
  163. # The "ARM system type" choice list is ordered alphabetically by option
  164. # text. Please add new entries in the option alphabetic order.
  165. #
  166. choice
  167. prompt "ARM system type"
  168. default ARCH_VERSATILE
  169. config ARCH_AAEC2000
  170. bool "Agilent AAEC-2000 based"
  171. select CPU_ARM920T
  172. select ARM_AMBA
  173. select HAVE_CLK
  174. select ARCH_USES_GETTIMEOFFSET
  175. help
  176. This enables support for systems based on the Agilent AAEC-2000
  177. config ARCH_INTEGRATOR
  178. bool "ARM Ltd. Integrator family"
  179. select ARM_AMBA
  180. select ARCH_HAS_CPUFREQ
  181. select CLKDEV_LOOKUP
  182. select ICST
  183. select GENERIC_CLOCKEVENTS
  184. select PLAT_VERSATILE
  185. help
  186. Support for ARM's Integrator platform.
  187. config ARCH_REALVIEW
  188. bool "ARM Ltd. RealView family"
  189. select ARM_AMBA
  190. select CLKDEV_LOOKUP
  191. select HAVE_SCHED_CLOCK
  192. select ICST
  193. select GENERIC_CLOCKEVENTS
  194. select ARCH_WANT_OPTIONAL_GPIOLIB
  195. select PLAT_VERSATILE
  196. select ARM_TIMER_SP804
  197. select GPIO_PL061 if GPIOLIB
  198. help
  199. This enables support for ARM Ltd RealView boards.
  200. config ARCH_VERSATILE
  201. bool "ARM Ltd. Versatile family"
  202. select ARM_AMBA
  203. select ARM_VIC
  204. select CLKDEV_LOOKUP
  205. select HAVE_SCHED_CLOCK
  206. select ICST
  207. select GENERIC_CLOCKEVENTS
  208. select ARCH_WANT_OPTIONAL_GPIOLIB
  209. select PLAT_VERSATILE
  210. select PLAT_VERSATILE_CLCD
  211. select ARM_TIMER_SP804
  212. help
  213. This enables support for ARM Ltd Versatile board.
  214. config ARCH_VEXPRESS
  215. bool "ARM Ltd. Versatile Express family"
  216. select ARCH_WANT_OPTIONAL_GPIOLIB
  217. select ARM_AMBA
  218. select ARM_TIMER_SP804
  219. select CLKDEV_LOOKUP
  220. select GENERIC_CLOCKEVENTS
  221. select HAVE_CLK
  222. select HAVE_SCHED_CLOCK
  223. select HAVE_PATA_PLATFORM
  224. select ICST
  225. select PLAT_VERSATILE
  226. help
  227. This enables support for the ARM Ltd Versatile Express boards.
  228. config ARCH_AT91
  229. bool "Atmel AT91"
  230. select ARCH_REQUIRE_GPIOLIB
  231. select HAVE_CLK
  232. help
  233. This enables support for systems based on the Atmel AT91RM9200,
  234. AT91SAM9 and AT91CAP9 processors.
  235. config ARCH_BCMRING
  236. bool "Broadcom BCMRING"
  237. depends on MMU
  238. select CPU_V6
  239. select ARM_AMBA
  240. select CLKDEV_LOOKUP
  241. select GENERIC_CLOCKEVENTS
  242. select ARCH_WANT_OPTIONAL_GPIOLIB
  243. help
  244. Support for Broadcom's BCMRing platform.
  245. config ARCH_CLPS711X
  246. bool "Cirrus Logic CLPS711x/EP721x-based"
  247. select CPU_ARM720T
  248. select ARCH_USES_GETTIMEOFFSET
  249. help
  250. Support for Cirrus Logic 711x/721x based boards.
  251. config ARCH_CNS3XXX
  252. bool "Cavium Networks CNS3XXX family"
  253. select CPU_V6
  254. select GENERIC_CLOCKEVENTS
  255. select ARM_GIC
  256. select MIGHT_HAVE_PCI
  257. select PCI_DOMAINS if PCI
  258. help
  259. Support for Cavium Networks CNS3XXX platform.
  260. config ARCH_GEMINI
  261. bool "Cortina Systems Gemini"
  262. select CPU_FA526
  263. select ARCH_REQUIRE_GPIOLIB
  264. select ARCH_USES_GETTIMEOFFSET
  265. help
  266. Support for the Cortina Systems Gemini family SoCs
  267. config ARCH_EBSA110
  268. bool "EBSA-110"
  269. select CPU_SA110
  270. select ISA
  271. select NO_IOPORT
  272. select ARCH_USES_GETTIMEOFFSET
  273. help
  274. This is an evaluation board for the StrongARM processor available
  275. from Digital. It has limited hardware on-board, including an
  276. Ethernet interface, two PCMCIA sockets, two serial ports and a
  277. parallel port.
  278. config ARCH_EP93XX
  279. bool "EP93xx-based"
  280. select CPU_ARM920T
  281. select ARM_AMBA
  282. select ARM_VIC
  283. select CLKDEV_LOOKUP
  284. select ARCH_REQUIRE_GPIOLIB
  285. select ARCH_HAS_HOLES_MEMORYMODEL
  286. select ARCH_USES_GETTIMEOFFSET
  287. help
  288. This enables support for the Cirrus EP93xx series of CPUs.
  289. config ARCH_FOOTBRIDGE
  290. bool "FootBridge"
  291. select CPU_SA110
  292. select FOOTBRIDGE
  293. select ARCH_USES_GETTIMEOFFSET
  294. help
  295. Support for systems based on the DC21285 companion chip
  296. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  297. config ARCH_MXC
  298. bool "Freescale MXC/iMX-based"
  299. select GENERIC_CLOCKEVENTS
  300. select ARCH_REQUIRE_GPIOLIB
  301. select CLKDEV_LOOKUP
  302. help
  303. Support for Freescale MXC/iMX-based family of processors
  304. config ARCH_MXS
  305. bool "Freescale MXS-based"
  306. select GENERIC_CLOCKEVENTS
  307. select ARCH_REQUIRE_GPIOLIB
  308. select CLKDEV_LOOKUP
  309. help
  310. Support for Freescale MXS-based family of processors
  311. config ARCH_STMP3XXX
  312. bool "Freescale STMP3xxx"
  313. select CPU_ARM926T
  314. select CLKDEV_LOOKUP
  315. select ARCH_REQUIRE_GPIOLIB
  316. select GENERIC_CLOCKEVENTS
  317. select USB_ARCH_HAS_EHCI
  318. help
  319. Support for systems based on the Freescale 3xxx CPUs.
  320. config ARCH_NETX
  321. bool "Hilscher NetX based"
  322. select CPU_ARM926T
  323. select ARM_VIC
  324. select GENERIC_CLOCKEVENTS
  325. help
  326. This enables support for systems based on the Hilscher NetX Soc
  327. config ARCH_H720X
  328. bool "Hynix HMS720x-based"
  329. select CPU_ARM720T
  330. select ISA_DMA_API
  331. select ARCH_USES_GETTIMEOFFSET
  332. help
  333. This enables support for systems based on the Hynix HMS720x
  334. config ARCH_IOP13XX
  335. bool "IOP13xx-based"
  336. depends on MMU
  337. select CPU_XSC3
  338. select PLAT_IOP
  339. select PCI
  340. select ARCH_SUPPORTS_MSI
  341. select VMSPLIT_1G
  342. help
  343. Support for Intel's IOP13XX (XScale) family of processors.
  344. config ARCH_IOP32X
  345. bool "IOP32x-based"
  346. depends on MMU
  347. select CPU_XSCALE
  348. select PLAT_IOP
  349. select PCI
  350. select ARCH_REQUIRE_GPIOLIB
  351. help
  352. Support for Intel's 80219 and IOP32X (XScale) family of
  353. processors.
  354. config ARCH_IOP33X
  355. bool "IOP33x-based"
  356. depends on MMU
  357. select CPU_XSCALE
  358. select PLAT_IOP
  359. select PCI
  360. select ARCH_REQUIRE_GPIOLIB
  361. help
  362. Support for Intel's IOP33X (XScale) family of processors.
  363. config ARCH_IXP23XX
  364. bool "IXP23XX-based"
  365. depends on MMU
  366. select CPU_XSC3
  367. select PCI
  368. select ARCH_USES_GETTIMEOFFSET
  369. help
  370. Support for Intel's IXP23xx (XScale) family of processors.
  371. config ARCH_IXP2000
  372. bool "IXP2400/2800-based"
  373. depends on MMU
  374. select CPU_XSCALE
  375. select PCI
  376. select ARCH_USES_GETTIMEOFFSET
  377. help
  378. Support for Intel's IXP2400/2800 (XScale) family of processors.
  379. config ARCH_IXP4XX
  380. bool "IXP4xx-based"
  381. depends on MMU
  382. select CPU_XSCALE
  383. select GENERIC_GPIO
  384. select GENERIC_CLOCKEVENTS
  385. select HAVE_SCHED_CLOCK
  386. select MIGHT_HAVE_PCI
  387. select DMABOUNCE if PCI
  388. help
  389. Support for Intel's IXP4XX (XScale) family of processors.
  390. config ARCH_DOVE
  391. bool "Marvell Dove"
  392. select PCI
  393. select ARCH_REQUIRE_GPIOLIB
  394. select GENERIC_CLOCKEVENTS
  395. select PLAT_ORION
  396. help
  397. Support for the Marvell Dove SoC 88AP510
  398. config ARCH_KIRKWOOD
  399. bool "Marvell Kirkwood"
  400. select CPU_FEROCEON
  401. select PCI
  402. select ARCH_REQUIRE_GPIOLIB
  403. select GENERIC_CLOCKEVENTS
  404. select PLAT_ORION
  405. help
  406. Support for the following Marvell Kirkwood series SoCs:
  407. 88F6180, 88F6192 and 88F6281.
  408. config ARCH_LOKI
  409. bool "Marvell Loki (88RC8480)"
  410. select CPU_FEROCEON
  411. select GENERIC_CLOCKEVENTS
  412. select PLAT_ORION
  413. help
  414. Support for the Marvell Loki (88RC8480) SoC.
  415. config ARCH_LPC32XX
  416. bool "NXP LPC32XX"
  417. select CPU_ARM926T
  418. select ARCH_REQUIRE_GPIOLIB
  419. select HAVE_IDE
  420. select ARM_AMBA
  421. select USB_ARCH_HAS_OHCI
  422. select CLKDEV_LOOKUP
  423. select GENERIC_TIME
  424. select GENERIC_CLOCKEVENTS
  425. help
  426. Support for the NXP LPC32XX family of processors
  427. config ARCH_MV78XX0
  428. bool "Marvell MV78xx0"
  429. select CPU_FEROCEON
  430. select PCI
  431. select ARCH_REQUIRE_GPIOLIB
  432. select GENERIC_CLOCKEVENTS
  433. select PLAT_ORION
  434. help
  435. Support for the following Marvell MV78xx0 series SoCs:
  436. MV781x0, MV782x0.
  437. config ARCH_ORION5X
  438. bool "Marvell Orion"
  439. depends on MMU
  440. select CPU_FEROCEON
  441. select PCI
  442. select ARCH_REQUIRE_GPIOLIB
  443. select GENERIC_CLOCKEVENTS
  444. select PLAT_ORION
  445. help
  446. Support for the following Marvell Orion 5x series SoCs:
  447. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  448. Orion-2 (5281), Orion-1-90 (6183).
  449. config ARCH_MMP
  450. bool "Marvell PXA168/910/MMP2"
  451. depends on MMU
  452. select ARCH_REQUIRE_GPIOLIB
  453. select CLKDEV_LOOKUP
  454. select GENERIC_CLOCKEVENTS
  455. select HAVE_SCHED_CLOCK
  456. select TICK_ONESHOT
  457. select PLAT_PXA
  458. select SPARSE_IRQ
  459. help
  460. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  461. config ARCH_KS8695
  462. bool "Micrel/Kendin KS8695"
  463. select CPU_ARM922T
  464. select ARCH_REQUIRE_GPIOLIB
  465. select ARCH_USES_GETTIMEOFFSET
  466. help
  467. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  468. System-on-Chip devices.
  469. config ARCH_NS9XXX
  470. bool "NetSilicon NS9xxx"
  471. select CPU_ARM926T
  472. select GENERIC_GPIO
  473. select GENERIC_CLOCKEVENTS
  474. select HAVE_CLK
  475. help
  476. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  477. System.
  478. <http://www.digi.com/products/microprocessors/index.jsp>
  479. config ARCH_W90X900
  480. bool "Nuvoton W90X900 CPU"
  481. select CPU_ARM926T
  482. select ARCH_REQUIRE_GPIOLIB
  483. select CLKDEV_LOOKUP
  484. select GENERIC_CLOCKEVENTS
  485. help
  486. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  487. At present, the w90x900 has been renamed nuc900, regarding
  488. the ARM series product line, you can login the following
  489. link address to know more.
  490. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  491. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  492. config ARCH_NUC93X
  493. bool "Nuvoton NUC93X CPU"
  494. select CPU_ARM926T
  495. select CLKDEV_LOOKUP
  496. help
  497. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  498. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  499. config ARCH_TEGRA
  500. bool "NVIDIA Tegra"
  501. select CLKDEV_LOOKUP
  502. select GENERIC_TIME
  503. select GENERIC_CLOCKEVENTS
  504. select GENERIC_GPIO
  505. select HAVE_CLK
  506. select HAVE_SCHED_CLOCK
  507. select ARCH_HAS_BARRIERS if CACHE_L2X0
  508. select ARCH_HAS_CPUFREQ
  509. help
  510. This enables support for NVIDIA Tegra based systems (Tegra APX,
  511. Tegra 6xx and Tegra 2 series).
  512. config ARCH_PNX4008
  513. bool "Philips Nexperia PNX4008 Mobile"
  514. select CPU_ARM926T
  515. select CLKDEV_LOOKUP
  516. select ARCH_USES_GETTIMEOFFSET
  517. help
  518. This enables support for Philips PNX4008 mobile platform.
  519. config ARCH_PXA
  520. bool "PXA2xx/PXA3xx-based"
  521. depends on MMU
  522. select ARCH_MTD_XIP
  523. select ARCH_HAS_CPUFREQ
  524. select CLKDEV_LOOKUP
  525. select ARCH_REQUIRE_GPIOLIB
  526. select GENERIC_CLOCKEVENTS
  527. select HAVE_SCHED_CLOCK
  528. select TICK_ONESHOT
  529. select PLAT_PXA
  530. select SPARSE_IRQ
  531. help
  532. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  533. config ARCH_MSM
  534. bool "Qualcomm MSM"
  535. select HAVE_CLK
  536. select GENERIC_CLOCKEVENTS
  537. select ARCH_REQUIRE_GPIOLIB
  538. help
  539. Support for Qualcomm MSM/QSD based systems. This runs on the
  540. apps processor of the MSM/QSD and depends on a shared memory
  541. interface to the modem processor which runs the baseband
  542. stack and controls some vital subsystems
  543. (clock and power control, etc).
  544. config ARCH_SHMOBILE
  545. bool "Renesas SH-Mobile / R-Mobile"
  546. select HAVE_CLK
  547. select CLKDEV_LOOKUP
  548. select GENERIC_CLOCKEVENTS
  549. select NO_IOPORT
  550. select SPARSE_IRQ
  551. select MULTI_IRQ_HANDLER
  552. help
  553. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  554. config ARCH_RPC
  555. bool "RiscPC"
  556. select ARCH_ACORN
  557. select FIQ
  558. select TIMER_ACORN
  559. select ARCH_MAY_HAVE_PC_FDC
  560. select HAVE_PATA_PLATFORM
  561. select ISA_DMA_API
  562. select NO_IOPORT
  563. select ARCH_SPARSEMEM_ENABLE
  564. select ARCH_USES_GETTIMEOFFSET
  565. help
  566. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  567. CD-ROM interface, serial and parallel port, and the floppy drive.
  568. config ARCH_SA1100
  569. bool "SA1100-based"
  570. select CPU_SA1100
  571. select ISA
  572. select ARCH_SPARSEMEM_ENABLE
  573. select ARCH_MTD_XIP
  574. select ARCH_HAS_CPUFREQ
  575. select CPU_FREQ
  576. select GENERIC_CLOCKEVENTS
  577. select HAVE_CLK
  578. select HAVE_SCHED_CLOCK
  579. select TICK_ONESHOT
  580. select ARCH_REQUIRE_GPIOLIB
  581. help
  582. Support for StrongARM 11x0 based boards.
  583. config ARCH_S3C2410
  584. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
  585. select GENERIC_GPIO
  586. select ARCH_HAS_CPUFREQ
  587. select HAVE_CLK
  588. select ARCH_USES_GETTIMEOFFSET
  589. select HAVE_S3C2410_I2C if I2C
  590. help
  591. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  592. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  593. the Samsung SMDK2410 development board (and derivatives).
  594. Note, the S3C2416 and the S3C2450 are so close that they even share
  595. the same SoC ID code. This means that there is no seperate machine
  596. directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
  597. config ARCH_S3C64XX
  598. bool "Samsung S3C64XX"
  599. select PLAT_SAMSUNG
  600. select CPU_V6
  601. select ARM_VIC
  602. select HAVE_CLK
  603. select NO_IOPORT
  604. select ARCH_USES_GETTIMEOFFSET
  605. select ARCH_HAS_CPUFREQ
  606. select ARCH_REQUIRE_GPIOLIB
  607. select SAMSUNG_CLKSRC
  608. select SAMSUNG_IRQ_VIC_TIMER
  609. select SAMSUNG_IRQ_UART
  610. select S3C_GPIO_TRACK
  611. select S3C_GPIO_PULL_UPDOWN
  612. select S3C_GPIO_CFG_S3C24XX
  613. select S3C_GPIO_CFG_S3C64XX
  614. select S3C_DEV_NAND
  615. select USB_ARCH_HAS_OHCI
  616. select SAMSUNG_GPIOLIB_4BIT
  617. select HAVE_S3C2410_I2C if I2C
  618. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  619. help
  620. Samsung S3C64XX series based systems
  621. config ARCH_S5P64X0
  622. bool "Samsung S5P6440 S5P6450"
  623. select CPU_V6
  624. select GENERIC_GPIO
  625. select HAVE_CLK
  626. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  627. select ARCH_USES_GETTIMEOFFSET
  628. select HAVE_S3C2410_I2C if I2C
  629. select HAVE_S3C_RTC if RTC_CLASS
  630. help
  631. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  632. SMDK6450.
  633. config ARCH_S5P6442
  634. bool "Samsung S5P6442"
  635. select CPU_V6
  636. select GENERIC_GPIO
  637. select HAVE_CLK
  638. select ARCH_USES_GETTIMEOFFSET
  639. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  640. help
  641. Samsung S5P6442 CPU based systems
  642. config ARCH_S5PC100
  643. bool "Samsung S5PC100"
  644. select GENERIC_GPIO
  645. select HAVE_CLK
  646. select CPU_V7
  647. select ARM_L1_CACHE_SHIFT_6
  648. select ARCH_USES_GETTIMEOFFSET
  649. select HAVE_S3C2410_I2C if I2C
  650. select HAVE_S3C_RTC if RTC_CLASS
  651. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  652. help
  653. Samsung S5PC100 series based systems
  654. config ARCH_S5PV210
  655. bool "Samsung S5PV210/S5PC110"
  656. select CPU_V7
  657. select ARCH_SPARSEMEM_ENABLE
  658. select GENERIC_GPIO
  659. select HAVE_CLK
  660. select ARM_L1_CACHE_SHIFT_6
  661. select ARCH_HAS_CPUFREQ
  662. select ARCH_USES_GETTIMEOFFSET
  663. select HAVE_S3C2410_I2C if I2C
  664. select HAVE_S3C_RTC if RTC_CLASS
  665. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  666. help
  667. Samsung S5PV210/S5PC110 series based systems
  668. config ARCH_S5PV310
  669. bool "Samsung S5PV310/S5PC210"
  670. select CPU_V7
  671. select ARCH_SPARSEMEM_ENABLE
  672. select GENERIC_GPIO
  673. select HAVE_CLK
  674. select ARCH_HAS_CPUFREQ
  675. select GENERIC_CLOCKEVENTS
  676. select HAVE_S3C_RTC if RTC_CLASS
  677. select HAVE_S3C2410_I2C if I2C
  678. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  679. help
  680. Samsung S5PV310 series based systems
  681. config ARCH_SHARK
  682. bool "Shark"
  683. select CPU_SA110
  684. select ISA
  685. select ISA_DMA
  686. select ZONE_DMA
  687. select PCI
  688. select ARCH_USES_GETTIMEOFFSET
  689. help
  690. Support for the StrongARM based Digital DNARD machine, also known
  691. as "Shark" (<http://www.shark-linux.de/shark.html>).
  692. config ARCH_TCC_926
  693. bool "Telechips TCC ARM926-based systems"
  694. select CPU_ARM926T
  695. select HAVE_CLK
  696. select CLKDEV_LOOKUP
  697. select GENERIC_CLOCKEVENTS
  698. help
  699. Support for Telechips TCC ARM926-based systems.
  700. config ARCH_LH7A40X
  701. bool "Sharp LH7A40X"
  702. select CPU_ARM922T
  703. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  704. select ARCH_USES_GETTIMEOFFSET
  705. help
  706. Say Y here for systems based on one of the Sharp LH7A40X
  707. System on a Chip processors. These CPUs include an ARM922T
  708. core with a wide array of integrated devices for
  709. hand-held and low-power applications.
  710. config ARCH_U300
  711. bool "ST-Ericsson U300 Series"
  712. depends on MMU
  713. select CPU_ARM926T
  714. select HAVE_SCHED_CLOCK
  715. select HAVE_TCM
  716. select ARM_AMBA
  717. select ARM_VIC
  718. select GENERIC_CLOCKEVENTS
  719. select CLKDEV_LOOKUP
  720. select GENERIC_GPIO
  721. help
  722. Support for ST-Ericsson U300 series mobile platforms.
  723. config ARCH_U8500
  724. bool "ST-Ericsson U8500 Series"
  725. select CPU_V7
  726. select ARM_AMBA
  727. select GENERIC_CLOCKEVENTS
  728. select CLKDEV_LOOKUP
  729. select ARCH_REQUIRE_GPIOLIB
  730. select ARCH_HAS_CPUFREQ
  731. help
  732. Support for ST-Ericsson's Ux500 architecture
  733. config ARCH_NOMADIK
  734. bool "STMicroelectronics Nomadik"
  735. select ARM_AMBA
  736. select ARM_VIC
  737. select CPU_ARM926T
  738. select CLKDEV_LOOKUP
  739. select GENERIC_CLOCKEVENTS
  740. select ARCH_REQUIRE_GPIOLIB
  741. help
  742. Support for the Nomadik platform by ST-Ericsson
  743. config ARCH_DAVINCI
  744. bool "TI DaVinci"
  745. select GENERIC_CLOCKEVENTS
  746. select ARCH_REQUIRE_GPIOLIB
  747. select ZONE_DMA
  748. select HAVE_IDE
  749. select CLKDEV_LOOKUP
  750. select GENERIC_ALLOCATOR
  751. select ARCH_HAS_HOLES_MEMORYMODEL
  752. help
  753. Support for TI's DaVinci platform.
  754. config ARCH_OMAP
  755. bool "TI OMAP"
  756. select HAVE_CLK
  757. select ARCH_REQUIRE_GPIOLIB
  758. select ARCH_HAS_CPUFREQ
  759. select GENERIC_CLOCKEVENTS
  760. select HAVE_SCHED_CLOCK
  761. select ARCH_HAS_HOLES_MEMORYMODEL
  762. help
  763. Support for TI's OMAP platform (OMAP1/2/3/4).
  764. config PLAT_SPEAR
  765. bool "ST SPEAr"
  766. select ARM_AMBA
  767. select ARCH_REQUIRE_GPIOLIB
  768. select CLKDEV_LOOKUP
  769. select GENERIC_CLOCKEVENTS
  770. select HAVE_CLK
  771. help
  772. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  773. endchoice
  774. #
  775. # This is sorted alphabetically by mach-* pathname. However, plat-*
  776. # Kconfigs may be included either alphabetically (according to the
  777. # plat- suffix) or along side the corresponding mach-* source.
  778. #
  779. source "arch/arm/mach-aaec2000/Kconfig"
  780. source "arch/arm/mach-at91/Kconfig"
  781. source "arch/arm/mach-bcmring/Kconfig"
  782. source "arch/arm/mach-clps711x/Kconfig"
  783. source "arch/arm/mach-cns3xxx/Kconfig"
  784. source "arch/arm/mach-davinci/Kconfig"
  785. source "arch/arm/mach-dove/Kconfig"
  786. source "arch/arm/mach-ep93xx/Kconfig"
  787. source "arch/arm/mach-footbridge/Kconfig"
  788. source "arch/arm/mach-gemini/Kconfig"
  789. source "arch/arm/mach-h720x/Kconfig"
  790. source "arch/arm/mach-integrator/Kconfig"
  791. source "arch/arm/mach-iop32x/Kconfig"
  792. source "arch/arm/mach-iop33x/Kconfig"
  793. source "arch/arm/mach-iop13xx/Kconfig"
  794. source "arch/arm/mach-ixp4xx/Kconfig"
  795. source "arch/arm/mach-ixp2000/Kconfig"
  796. source "arch/arm/mach-ixp23xx/Kconfig"
  797. source "arch/arm/mach-kirkwood/Kconfig"
  798. source "arch/arm/mach-ks8695/Kconfig"
  799. source "arch/arm/mach-lh7a40x/Kconfig"
  800. source "arch/arm/mach-loki/Kconfig"
  801. source "arch/arm/mach-lpc32xx/Kconfig"
  802. source "arch/arm/mach-msm/Kconfig"
  803. source "arch/arm/mach-mv78xx0/Kconfig"
  804. source "arch/arm/plat-mxc/Kconfig"
  805. source "arch/arm/mach-mxs/Kconfig"
  806. source "arch/arm/mach-netx/Kconfig"
  807. source "arch/arm/mach-nomadik/Kconfig"
  808. source "arch/arm/plat-nomadik/Kconfig"
  809. source "arch/arm/mach-ns9xxx/Kconfig"
  810. source "arch/arm/mach-nuc93x/Kconfig"
  811. source "arch/arm/plat-omap/Kconfig"
  812. source "arch/arm/mach-omap1/Kconfig"
  813. source "arch/arm/mach-omap2/Kconfig"
  814. source "arch/arm/mach-orion5x/Kconfig"
  815. source "arch/arm/mach-pxa/Kconfig"
  816. source "arch/arm/plat-pxa/Kconfig"
  817. source "arch/arm/mach-mmp/Kconfig"
  818. source "arch/arm/mach-realview/Kconfig"
  819. source "arch/arm/mach-sa1100/Kconfig"
  820. source "arch/arm/plat-samsung/Kconfig"
  821. source "arch/arm/plat-s3c24xx/Kconfig"
  822. source "arch/arm/plat-s5p/Kconfig"
  823. source "arch/arm/plat-spear/Kconfig"
  824. source "arch/arm/plat-tcc/Kconfig"
  825. if ARCH_S3C2410
  826. source "arch/arm/mach-s3c2400/Kconfig"
  827. source "arch/arm/mach-s3c2410/Kconfig"
  828. source "arch/arm/mach-s3c2412/Kconfig"
  829. source "arch/arm/mach-s3c2416/Kconfig"
  830. source "arch/arm/mach-s3c2440/Kconfig"
  831. source "arch/arm/mach-s3c2443/Kconfig"
  832. endif
  833. if ARCH_S3C64XX
  834. source "arch/arm/mach-s3c64xx/Kconfig"
  835. endif
  836. source "arch/arm/mach-s5p64x0/Kconfig"
  837. source "arch/arm/mach-s5p6442/Kconfig"
  838. source "arch/arm/mach-s5pc100/Kconfig"
  839. source "arch/arm/mach-s5pv210/Kconfig"
  840. source "arch/arm/mach-s5pv310/Kconfig"
  841. source "arch/arm/mach-shmobile/Kconfig"
  842. source "arch/arm/plat-stmp3xxx/Kconfig"
  843. source "arch/arm/mach-tegra/Kconfig"
  844. source "arch/arm/mach-u300/Kconfig"
  845. source "arch/arm/mach-ux500/Kconfig"
  846. source "arch/arm/mach-versatile/Kconfig"
  847. source "arch/arm/mach-vexpress/Kconfig"
  848. source "arch/arm/plat-versatile/Kconfig"
  849. source "arch/arm/mach-w90x900/Kconfig"
  850. # Definitions to make life easier
  851. config ARCH_ACORN
  852. bool
  853. config PLAT_IOP
  854. bool
  855. select GENERIC_CLOCKEVENTS
  856. select HAVE_SCHED_CLOCK
  857. config PLAT_ORION
  858. bool
  859. select HAVE_SCHED_CLOCK
  860. config PLAT_PXA
  861. bool
  862. config PLAT_VERSATILE
  863. bool
  864. config ARM_TIMER_SP804
  865. bool
  866. source arch/arm/mm/Kconfig
  867. config IWMMXT
  868. bool "Enable iWMMXt support"
  869. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  870. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  871. help
  872. Enable support for iWMMXt context switching at run time if
  873. running on a CPU that supports it.
  874. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  875. config XSCALE_PMU
  876. bool
  877. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  878. default y
  879. config CPU_HAS_PMU
  880. depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
  881. (!ARCH_OMAP3 || OMAP3_EMU)
  882. default y
  883. bool
  884. config MULTI_IRQ_HANDLER
  885. bool
  886. help
  887. Allow each machine to specify it's own IRQ handler at run time.
  888. if !MMU
  889. source "arch/arm/Kconfig-nommu"
  890. endif
  891. config ARM_ERRATA_411920
  892. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  893. depends on CPU_V6
  894. help
  895. Invalidation of the Instruction Cache operation can
  896. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  897. It does not affect the MPCore. This option enables the ARM Ltd.
  898. recommended workaround.
  899. config ARM_ERRATA_430973
  900. bool "ARM errata: Stale prediction on replaced interworking branch"
  901. depends on CPU_V7
  902. help
  903. This option enables the workaround for the 430973 Cortex-A8
  904. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  905. interworking branch is replaced with another code sequence at the
  906. same virtual address, whether due to self-modifying code or virtual
  907. to physical address re-mapping, Cortex-A8 does not recover from the
  908. stale interworking branch prediction. This results in Cortex-A8
  909. executing the new code sequence in the incorrect ARM or Thumb state.
  910. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  911. and also flushes the branch target cache at every context switch.
  912. Note that setting specific bits in the ACTLR register may not be
  913. available in non-secure mode.
  914. config ARM_ERRATA_458693
  915. bool "ARM errata: Processor deadlock when a false hazard is created"
  916. depends on CPU_V7
  917. help
  918. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  919. erratum. For very specific sequences of memory operations, it is
  920. possible for a hazard condition intended for a cache line to instead
  921. be incorrectly associated with a different cache line. This false
  922. hazard might then cause a processor deadlock. The workaround enables
  923. the L1 caching of the NEON accesses and disables the PLD instruction
  924. in the ACTLR register. Note that setting specific bits in the ACTLR
  925. register may not be available in non-secure mode.
  926. config ARM_ERRATA_460075
  927. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  928. depends on CPU_V7
  929. help
  930. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  931. erratum. Any asynchronous access to the L2 cache may encounter a
  932. situation in which recent store transactions to the L2 cache are lost
  933. and overwritten with stale memory contents from external memory. The
  934. workaround disables the write-allocate mode for the L2 cache via the
  935. ACTLR register. Note that setting specific bits in the ACTLR register
  936. may not be available in non-secure mode.
  937. config ARM_ERRATA_742230
  938. bool "ARM errata: DMB operation may be faulty"
  939. depends on CPU_V7 && SMP
  940. help
  941. This option enables the workaround for the 742230 Cortex-A9
  942. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  943. between two write operations may not ensure the correct visibility
  944. ordering of the two writes. This workaround sets a specific bit in
  945. the diagnostic register of the Cortex-A9 which causes the DMB
  946. instruction to behave as a DSB, ensuring the correct behaviour of
  947. the two writes.
  948. config ARM_ERRATA_742231
  949. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  950. depends on CPU_V7 && SMP
  951. help
  952. This option enables the workaround for the 742231 Cortex-A9
  953. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  954. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  955. accessing some data located in the same cache line, may get corrupted
  956. data due to bad handling of the address hazard when the line gets
  957. replaced from one of the CPUs at the same time as another CPU is
  958. accessing it. This workaround sets specific bits in the diagnostic
  959. register of the Cortex-A9 which reduces the linefill issuing
  960. capabilities of the processor.
  961. config PL310_ERRATA_588369
  962. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  963. depends on CACHE_L2X0 && ARCH_OMAP4
  964. help
  965. The PL310 L2 cache controller implements three types of Clean &
  966. Invalidate maintenance operations: by Physical Address
  967. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  968. They are architecturally defined to behave as the execution of a
  969. clean operation followed immediately by an invalidate operation,
  970. both performing to the same memory location. This functionality
  971. is not correctly implemented in PL310 as clean lines are not
  972. invalidated as a result of these operations. Note that this errata
  973. uses Texas Instrument's secure monitor api.
  974. config ARM_ERRATA_720789
  975. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  976. depends on CPU_V7 && SMP
  977. help
  978. This option enables the workaround for the 720789 Cortex-A9 (prior to
  979. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  980. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  981. As a consequence of this erratum, some TLB entries which should be
  982. invalidated are not, resulting in an incoherency in the system page
  983. tables. The workaround changes the TLB flushing routines to invalidate
  984. entries regardless of the ASID.
  985. config ARM_ERRATA_743622
  986. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  987. depends on CPU_V7
  988. help
  989. This option enables the workaround for the 743622 Cortex-A9
  990. (r2p0..r2p2) erratum. Under very rare conditions, a faulty
  991. optimisation in the Cortex-A9 Store Buffer may lead to data
  992. corruption. This workaround sets a specific bit in the diagnostic
  993. register of the Cortex-A9 which disables the Store Buffer
  994. optimisation, preventing the defect from occurring. This has no
  995. visible impact on the overall performance or power consumption of the
  996. processor.
  997. endmenu
  998. source "arch/arm/common/Kconfig"
  999. menu "Bus support"
  1000. config ARM_AMBA
  1001. bool
  1002. config ISA
  1003. bool
  1004. help
  1005. Find out whether you have ISA slots on your motherboard. ISA is the
  1006. name of a bus system, i.e. the way the CPU talks to the other stuff
  1007. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1008. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1009. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1010. # Select ISA DMA controller support
  1011. config ISA_DMA
  1012. bool
  1013. select ISA_DMA_API
  1014. # Select ISA DMA interface
  1015. config ISA_DMA_API
  1016. bool
  1017. config PCI
  1018. bool "PCI support" if MIGHT_HAVE_PCI
  1019. help
  1020. Find out whether you have a PCI motherboard. PCI is the name of a
  1021. bus system, i.e. the way the CPU talks to the other stuff inside
  1022. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1023. VESA. If you have PCI, say Y, otherwise N.
  1024. config PCI_DOMAINS
  1025. bool
  1026. depends on PCI
  1027. config PCI_NANOENGINE
  1028. bool "BSE nanoEngine PCI support"
  1029. depends on SA1100_NANOENGINE
  1030. help
  1031. Enable PCI on the BSE nanoEngine board.
  1032. config PCI_SYSCALL
  1033. def_bool PCI
  1034. # Select the host bridge type
  1035. config PCI_HOST_VIA82C505
  1036. bool
  1037. depends on PCI && ARCH_SHARK
  1038. default y
  1039. config PCI_HOST_ITE8152
  1040. bool
  1041. depends on PCI && MACH_ARMCORE
  1042. default y
  1043. select DMABOUNCE
  1044. source "drivers/pci/Kconfig"
  1045. source "drivers/pcmcia/Kconfig"
  1046. endmenu
  1047. menu "Kernel Features"
  1048. source "kernel/time/Kconfig"
  1049. config SMP
  1050. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  1051. depends on EXPERIMENTAL
  1052. depends on GENERIC_CLOCKEVENTS
  1053. depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
  1054. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
  1055. ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
  1056. ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
  1057. select USE_GENERIC_SMP_HELPERS
  1058. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1059. help
  1060. This enables support for systems with more than one CPU. If you have
  1061. a system with only one CPU, like most personal computers, say N. If
  1062. you have a system with more than one CPU, say Y.
  1063. If you say N here, the kernel will run on single and multiprocessor
  1064. machines, but will use only one CPU of a multiprocessor machine. If
  1065. you say Y here, the kernel will run on many, but not all, single
  1066. processor machines. On a single processor machine, the kernel will
  1067. run faster if you say N here.
  1068. See also <file:Documentation/i386/IO-APIC.txt>,
  1069. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1070. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1071. If you don't know what to do here, say N.
  1072. config SMP_ON_UP
  1073. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1074. depends on EXPERIMENTAL
  1075. depends on SMP && !XIP_KERNEL
  1076. default y
  1077. help
  1078. SMP kernels contain instructions which fail on non-SMP processors.
  1079. Enabling this option allows the kernel to modify itself to make
  1080. these instructions safe. Disabling it allows about 1K of space
  1081. savings.
  1082. If you don't know what to do here, say Y.
  1083. config HAVE_ARM_SCU
  1084. bool
  1085. depends on SMP
  1086. help
  1087. This option enables support for the ARM system coherency unit
  1088. config HAVE_ARM_TWD
  1089. bool
  1090. depends on SMP
  1091. select TICK_ONESHOT
  1092. help
  1093. This options enables support for the ARM timer and watchdog unit
  1094. choice
  1095. prompt "Memory split"
  1096. default VMSPLIT_3G
  1097. help
  1098. Select the desired split between kernel and user memory.
  1099. If you are not absolutely sure what you are doing, leave this
  1100. option alone!
  1101. config VMSPLIT_3G
  1102. bool "3G/1G user/kernel split"
  1103. config VMSPLIT_2G
  1104. bool "2G/2G user/kernel split"
  1105. config VMSPLIT_1G
  1106. bool "1G/3G user/kernel split"
  1107. endchoice
  1108. config PAGE_OFFSET
  1109. hex
  1110. default 0x40000000 if VMSPLIT_1G
  1111. default 0x80000000 if VMSPLIT_2G
  1112. default 0xC0000000
  1113. config NR_CPUS
  1114. int "Maximum number of CPUs (2-32)"
  1115. range 2 32
  1116. depends on SMP
  1117. default "4"
  1118. config HOTPLUG_CPU
  1119. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1120. depends on SMP && HOTPLUG && EXPERIMENTAL
  1121. depends on !ARCH_MSM
  1122. help
  1123. Say Y here to experiment with turning CPUs off and on. CPUs
  1124. can be controlled through /sys/devices/system/cpu.
  1125. config LOCAL_TIMERS
  1126. bool "Use local timer interrupts"
  1127. depends on SMP
  1128. default y
  1129. select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
  1130. help
  1131. Enable support for local timers on SMP platforms, rather then the
  1132. legacy IPI broadcast method. Local timers allows the system
  1133. accounting to be spread across the timer interval, preventing a
  1134. "thundering herd" at every timer tick.
  1135. source kernel/Kconfig.preempt
  1136. config HZ
  1137. int
  1138. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
  1139. ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
  1140. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1141. default AT91_TIMER_HZ if ARCH_AT91
  1142. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1143. default 100
  1144. config THUMB2_KERNEL
  1145. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1146. depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
  1147. select AEABI
  1148. select ARM_ASM_UNIFIED
  1149. help
  1150. By enabling this option, the kernel will be compiled in
  1151. Thumb-2 mode. A compiler/assembler that understand the unified
  1152. ARM-Thumb syntax is needed.
  1153. If unsure, say N.
  1154. config ARM_ASM_UNIFIED
  1155. bool
  1156. config AEABI
  1157. bool "Use the ARM EABI to compile the kernel"
  1158. help
  1159. This option allows for the kernel to be compiled using the latest
  1160. ARM ABI (aka EABI). This is only useful if you are using a user
  1161. space environment that is also compiled with EABI.
  1162. Since there are major incompatibilities between the legacy ABI and
  1163. EABI, especially with regard to structure member alignment, this
  1164. option also changes the kernel syscall calling convention to
  1165. disambiguate both ABIs and allow for backward compatibility support
  1166. (selected with CONFIG_OABI_COMPAT).
  1167. To use this you need GCC version 4.0.0 or later.
  1168. config OABI_COMPAT
  1169. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1170. depends on AEABI && EXPERIMENTAL
  1171. default y
  1172. help
  1173. This option preserves the old syscall interface along with the
  1174. new (ARM EABI) one. It also provides a compatibility layer to
  1175. intercept syscalls that have structure arguments which layout
  1176. in memory differs between the legacy ABI and the new ARM EABI
  1177. (only for non "thumb" binaries). This option adds a tiny
  1178. overhead to all syscalls and produces a slightly larger kernel.
  1179. If you know you'll be using only pure EABI user space then you
  1180. can say N here. If this option is not selected and you attempt
  1181. to execute a legacy ABI binary then the result will be
  1182. UNPREDICTABLE (in fact it can be predicted that it won't work
  1183. at all). If in doubt say Y.
  1184. config ARCH_HAS_HOLES_MEMORYMODEL
  1185. bool
  1186. config ARCH_SPARSEMEM_ENABLE
  1187. bool
  1188. config ARCH_SPARSEMEM_DEFAULT
  1189. def_bool ARCH_SPARSEMEM_ENABLE
  1190. config ARCH_SELECT_MEMORY_MODEL
  1191. def_bool ARCH_SPARSEMEM_ENABLE
  1192. config HIGHMEM
  1193. bool "High Memory Support (EXPERIMENTAL)"
  1194. depends on MMU && EXPERIMENTAL
  1195. help
  1196. The address space of ARM processors is only 4 Gigabytes large
  1197. and it has to accommodate user address space, kernel address
  1198. space as well as some memory mapped IO. That means that, if you
  1199. have a large amount of physical memory and/or IO, not all of the
  1200. memory can be "permanently mapped" by the kernel. The physical
  1201. memory that is not permanently mapped is called "high memory".
  1202. Depending on the selected kernel/user memory split, minimum
  1203. vmalloc space and actual amount of RAM, you may not need this
  1204. option which should result in a slightly faster kernel.
  1205. If unsure, say n.
  1206. config HIGHPTE
  1207. bool "Allocate 2nd-level pagetables from highmem"
  1208. depends on HIGHMEM
  1209. depends on !OUTER_CACHE
  1210. config HW_PERF_EVENTS
  1211. bool "Enable hardware performance counter support for perf events"
  1212. depends on PERF_EVENTS && CPU_HAS_PMU
  1213. default y
  1214. help
  1215. Enable hardware performance counter support for perf events. If
  1216. disabled, perf events will use software events only.
  1217. source "mm/Kconfig"
  1218. config FORCE_MAX_ZONEORDER
  1219. int "Maximum zone order" if ARCH_SHMOBILE
  1220. range 11 64 if ARCH_SHMOBILE
  1221. default "9" if SA1111
  1222. default "11"
  1223. help
  1224. The kernel memory allocator divides physically contiguous memory
  1225. blocks into "zones", where each zone is a power of two number of
  1226. pages. This option selects the largest power of two that the kernel
  1227. keeps in the memory allocator. If you need to allocate very large
  1228. blocks of physically contiguous memory, then you may need to
  1229. increase this value.
  1230. This config option is actually maximum order plus one. For example,
  1231. a value of 11 means that the largest free memory block is 2^10 pages.
  1232. config LEDS
  1233. bool "Timer and CPU usage LEDs"
  1234. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1235. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1236. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1237. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1238. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1239. ARCH_AT91 || ARCH_DAVINCI || \
  1240. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1241. help
  1242. If you say Y here, the LEDs on your machine will be used
  1243. to provide useful information about your current system status.
  1244. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1245. be able to select which LEDs are active using the options below. If
  1246. you are compiling a kernel for the EBSA-110 or the LART however, the
  1247. red LED will simply flash regularly to indicate that the system is
  1248. still functional. It is safe to say Y here if you have a CATS
  1249. system, but the driver will do nothing.
  1250. config LEDS_TIMER
  1251. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1252. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1253. || MACH_OMAP_PERSEUS2
  1254. depends on LEDS
  1255. depends on !GENERIC_CLOCKEVENTS
  1256. default y if ARCH_EBSA110
  1257. help
  1258. If you say Y here, one of the system LEDs (the green one on the
  1259. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1260. will flash regularly to indicate that the system is still
  1261. operational. This is mainly useful to kernel hackers who are
  1262. debugging unstable kernels.
  1263. The LART uses the same LED for both Timer LED and CPU usage LED
  1264. functions. You may choose to use both, but the Timer LED function
  1265. will overrule the CPU usage LED.
  1266. config LEDS_CPU
  1267. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1268. !ARCH_OMAP) \
  1269. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1270. || MACH_OMAP_PERSEUS2
  1271. depends on LEDS
  1272. help
  1273. If you say Y here, the red LED will be used to give a good real
  1274. time indication of CPU usage, by lighting whenever the idle task
  1275. is not currently executing.
  1276. The LART uses the same LED for both Timer LED and CPU usage LED
  1277. functions. You may choose to use both, but the Timer LED function
  1278. will overrule the CPU usage LED.
  1279. config ALIGNMENT_TRAP
  1280. bool
  1281. depends on CPU_CP15_MMU
  1282. default y if !ARCH_EBSA110
  1283. select HAVE_PROC_CPU if PROC_FS
  1284. help
  1285. ARM processors cannot fetch/store information which is not
  1286. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1287. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1288. fetch/store instructions will be emulated in software if you say
  1289. here, which has a severe performance impact. This is necessary for
  1290. correct operation of some network protocols. With an IP-only
  1291. configuration it is safe to say N, otherwise say Y.
  1292. config UACCESS_WITH_MEMCPY
  1293. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1294. depends on MMU && EXPERIMENTAL
  1295. default y if CPU_FEROCEON
  1296. help
  1297. Implement faster copy_to_user and clear_user methods for CPU
  1298. cores where a 8-word STM instruction give significantly higher
  1299. memory write throughput than a sequence of individual 32bit stores.
  1300. A possible side effect is a slight increase in scheduling latency
  1301. between threads sharing the same address space if they invoke
  1302. such copy operations with large buffers.
  1303. However, if the CPU data cache is using a write-allocate mode,
  1304. this option is unlikely to provide any performance gain.
  1305. config SECCOMP
  1306. bool
  1307. prompt "Enable seccomp to safely compute untrusted bytecode"
  1308. ---help---
  1309. This kernel feature is useful for number crunching applications
  1310. that may need to compute untrusted bytecode during their
  1311. execution. By using pipes or other transports made available to
  1312. the process as file descriptors supporting the read/write
  1313. syscalls, it's possible to isolate those applications in
  1314. their own address space using seccomp. Once seccomp is
  1315. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1316. and the task is only allowed to execute a few safe syscalls
  1317. defined by each seccomp mode.
  1318. config CC_STACKPROTECTOR
  1319. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1320. depends on EXPERIMENTAL
  1321. help
  1322. This option turns on the -fstack-protector GCC feature. This
  1323. feature puts, at the beginning of functions, a canary value on
  1324. the stack just before the return address, and validates
  1325. the value just before actually returning. Stack based buffer
  1326. overflows (that need to overwrite this return address) now also
  1327. overwrite the canary, which gets detected and the attack is then
  1328. neutralized via a kernel panic.
  1329. This feature requires gcc version 4.2 or above.
  1330. config DEPRECATED_PARAM_STRUCT
  1331. bool "Provide old way to pass kernel parameters"
  1332. help
  1333. This was deprecated in 2001 and announced to live on for 5 years.
  1334. Some old boot loaders still use this way.
  1335. endmenu
  1336. menu "Boot options"
  1337. # Compressed boot loader in ROM. Yes, we really want to ask about
  1338. # TEXT and BSS so we preserve their values in the config files.
  1339. config ZBOOT_ROM_TEXT
  1340. hex "Compressed ROM boot loader base address"
  1341. default "0"
  1342. help
  1343. The physical address at which the ROM-able zImage is to be
  1344. placed in the target. Platforms which normally make use of
  1345. ROM-able zImage formats normally set this to a suitable
  1346. value in their defconfig file.
  1347. If ZBOOT_ROM is not enabled, this has no effect.
  1348. config ZBOOT_ROM_BSS
  1349. hex "Compressed ROM boot loader BSS address"
  1350. default "0"
  1351. help
  1352. The base address of an area of read/write memory in the target
  1353. for the ROM-able zImage which must be available while the
  1354. decompressor is running. It must be large enough to hold the
  1355. entire decompressed kernel plus an additional 128 KiB.
  1356. Platforms which normally make use of ROM-able zImage formats
  1357. normally set this to a suitable value in their defconfig file.
  1358. If ZBOOT_ROM is not enabled, this has no effect.
  1359. config ZBOOT_ROM
  1360. bool "Compressed boot loader in ROM/flash"
  1361. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1362. help
  1363. Say Y here if you intend to execute your compressed kernel image
  1364. (zImage) directly from ROM or flash. If unsure, say N.
  1365. config CMDLINE
  1366. string "Default kernel command string"
  1367. default ""
  1368. help
  1369. On some architectures (EBSA110 and CATS), there is currently no way
  1370. for the boot loader to pass arguments to the kernel. For these
  1371. architectures, you should supply some command-line options at build
  1372. time by entering them here. As a minimum, you should specify the
  1373. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1374. config CMDLINE_FORCE
  1375. bool "Always use the default kernel command string"
  1376. depends on CMDLINE != ""
  1377. help
  1378. Always use the default kernel command string, even if the boot
  1379. loader passes other arguments to the kernel.
  1380. This is useful if you cannot or don't want to change the
  1381. command-line options your boot loader passes to the kernel.
  1382. If unsure, say N.
  1383. config XIP_KERNEL
  1384. bool "Kernel Execute-In-Place from ROM"
  1385. depends on !ZBOOT_ROM
  1386. help
  1387. Execute-In-Place allows the kernel to run from non-volatile storage
  1388. directly addressable by the CPU, such as NOR flash. This saves RAM
  1389. space since the text section of the kernel is not loaded from flash
  1390. to RAM. Read-write sections, such as the data section and stack,
  1391. are still copied to RAM. The XIP kernel is not compressed since
  1392. it has to run directly from flash, so it will take more space to
  1393. store it. The flash address used to link the kernel object files,
  1394. and for storing it, is configuration dependent. Therefore, if you
  1395. say Y here, you must know the proper physical address where to
  1396. store the kernel image depending on your own flash memory usage.
  1397. Also note that the make target becomes "make xipImage" rather than
  1398. "make zImage" or "make Image". The final kernel binary to put in
  1399. ROM memory will be arch/arm/boot/xipImage.
  1400. If unsure, say N.
  1401. config XIP_PHYS_ADDR
  1402. hex "XIP Kernel Physical Location"
  1403. depends on XIP_KERNEL
  1404. default "0x00080000"
  1405. help
  1406. This is the physical address in your flash memory the kernel will
  1407. be linked for and stored to. This address is dependent on your
  1408. own flash usage.
  1409. config KEXEC
  1410. bool "Kexec system call (EXPERIMENTAL)"
  1411. depends on EXPERIMENTAL
  1412. help
  1413. kexec is a system call that implements the ability to shutdown your
  1414. current kernel, and to start another kernel. It is like a reboot
  1415. but it is independent of the system firmware. And like a reboot
  1416. you can start any kernel with it, not just Linux.
  1417. It is an ongoing process to be certain the hardware in a machine
  1418. is properly shutdown, so do not be surprised if this code does not
  1419. initially work for you. It may help to enable device hotplugging
  1420. support.
  1421. config ATAGS_PROC
  1422. bool "Export atags in procfs"
  1423. depends on KEXEC
  1424. default y
  1425. help
  1426. Should the atags used to boot the kernel be exported in an "atags"
  1427. file in procfs. Useful with kexec.
  1428. config CRASH_DUMP
  1429. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1430. depends on EXPERIMENTAL
  1431. help
  1432. Generate crash dump after being started by kexec. This should
  1433. be normally only set in special crash dump kernels which are
  1434. loaded in the main kernel with kexec-tools into a specially
  1435. reserved region and then later executed after a crash by
  1436. kdump/kexec. The crash dump kernel must be compiled to a
  1437. memory address not used by the main kernel
  1438. For more details see Documentation/kdump/kdump.txt
  1439. config AUTO_ZRELADDR
  1440. bool "Auto calculation of the decompressed kernel image address"
  1441. depends on !ZBOOT_ROM && !ARCH_U300
  1442. help
  1443. ZRELADDR is the physical address where the decompressed kernel
  1444. image will be placed. If AUTO_ZRELADDR is selected, the address
  1445. will be determined at run-time by masking the current IP with
  1446. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1447. from start of memory.
  1448. endmenu
  1449. menu "CPU Power Management"
  1450. if ARCH_HAS_CPUFREQ
  1451. source "drivers/cpufreq/Kconfig"
  1452. config CPU_FREQ_IMX
  1453. tristate "CPUfreq driver for i.MX CPUs"
  1454. depends on ARCH_MXC && CPU_FREQ
  1455. help
  1456. This enables the CPUfreq driver for i.MX CPUs.
  1457. config CPU_FREQ_SA1100
  1458. bool
  1459. config CPU_FREQ_SA1110
  1460. bool
  1461. config CPU_FREQ_INTEGRATOR
  1462. tristate "CPUfreq driver for ARM Integrator CPUs"
  1463. depends on ARCH_INTEGRATOR && CPU_FREQ
  1464. default y
  1465. help
  1466. This enables the CPUfreq driver for ARM Integrator CPUs.
  1467. For details, take a look at <file:Documentation/cpu-freq>.
  1468. If in doubt, say Y.
  1469. config CPU_FREQ_PXA
  1470. bool
  1471. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1472. default y
  1473. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1474. config CPU_FREQ_S3C64XX
  1475. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1476. depends on CPU_FREQ && CPU_S3C6410
  1477. config CPU_FREQ_S3C
  1478. bool
  1479. help
  1480. Internal configuration node for common cpufreq on Samsung SoC
  1481. config CPU_FREQ_S3C24XX
  1482. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1483. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1484. select CPU_FREQ_S3C
  1485. help
  1486. This enables the CPUfreq driver for the Samsung S3C24XX family
  1487. of CPUs.
  1488. For details, take a look at <file:Documentation/cpu-freq>.
  1489. If in doubt, say N.
  1490. config CPU_FREQ_S3C24XX_PLL
  1491. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1492. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1493. help
  1494. Compile in support for changing the PLL frequency from the
  1495. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1496. after a frequency change, so by default it is not enabled.
  1497. This also means that the PLL tables for the selected CPU(s) will
  1498. be built which may increase the size of the kernel image.
  1499. config CPU_FREQ_S3C24XX_DEBUG
  1500. bool "Debug CPUfreq Samsung driver core"
  1501. depends on CPU_FREQ_S3C24XX
  1502. help
  1503. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1504. config CPU_FREQ_S3C24XX_IODEBUG
  1505. bool "Debug CPUfreq Samsung driver IO timing"
  1506. depends on CPU_FREQ_S3C24XX
  1507. help
  1508. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1509. config CPU_FREQ_S3C24XX_DEBUGFS
  1510. bool "Export debugfs for CPUFreq"
  1511. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1512. help
  1513. Export status information via debugfs.
  1514. endif
  1515. source "drivers/cpuidle/Kconfig"
  1516. endmenu
  1517. menu "Floating point emulation"
  1518. comment "At least one emulation must be selected"
  1519. config FPE_NWFPE
  1520. bool "NWFPE math emulation"
  1521. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1522. ---help---
  1523. Say Y to include the NWFPE floating point emulator in the kernel.
  1524. This is necessary to run most binaries. Linux does not currently
  1525. support floating point hardware so you need to say Y here even if
  1526. your machine has an FPA or floating point co-processor podule.
  1527. You may say N here if you are going to load the Acorn FPEmulator
  1528. early in the bootup.
  1529. config FPE_NWFPE_XP
  1530. bool "Support extended precision"
  1531. depends on FPE_NWFPE
  1532. help
  1533. Say Y to include 80-bit support in the kernel floating-point
  1534. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1535. Note that gcc does not generate 80-bit operations by default,
  1536. so in most cases this option only enlarges the size of the
  1537. floating point emulator without any good reason.
  1538. You almost surely want to say N here.
  1539. config FPE_FASTFPE
  1540. bool "FastFPE math emulation (EXPERIMENTAL)"
  1541. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1542. ---help---
  1543. Say Y here to include the FAST floating point emulator in the kernel.
  1544. This is an experimental much faster emulator which now also has full
  1545. precision for the mantissa. It does not support any exceptions.
  1546. It is very simple, and approximately 3-6 times faster than NWFPE.
  1547. It should be sufficient for most programs. It may be not suitable
  1548. for scientific calculations, but you have to check this for yourself.
  1549. If you do not feel you need a faster FP emulation you should better
  1550. choose NWFPE.
  1551. config VFP
  1552. bool "VFP-format floating point maths"
  1553. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1554. help
  1555. Say Y to include VFP support code in the kernel. This is needed
  1556. if your hardware includes a VFP unit.
  1557. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1558. release notes and additional status information.
  1559. Say N if your target does not have VFP hardware.
  1560. config VFPv3
  1561. bool
  1562. depends on VFP
  1563. default y if CPU_V7
  1564. config NEON
  1565. bool "Advanced SIMD (NEON) Extension support"
  1566. depends on VFPv3 && CPU_V7
  1567. help
  1568. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1569. Extension.
  1570. endmenu
  1571. menu "Userspace binary formats"
  1572. source "fs/Kconfig.binfmt"
  1573. config ARTHUR
  1574. tristate "RISC OS personality"
  1575. depends on !AEABI
  1576. help
  1577. Say Y here to include the kernel code necessary if you want to run
  1578. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1579. experimental; if this sounds frightening, say N and sleep in peace.
  1580. You can also say M here to compile this support as a module (which
  1581. will be called arthur).
  1582. endmenu
  1583. menu "Power management options"
  1584. source "kernel/power/Kconfig"
  1585. config ARCH_SUSPEND_POSSIBLE
  1586. def_bool y
  1587. endmenu
  1588. source "net/Kconfig"
  1589. source "drivers/Kconfig"
  1590. source "fs/Kconfig"
  1591. source "arch/arm/Kconfig.debug"
  1592. source "security/Kconfig"
  1593. source "crypto/Kconfig"
  1594. source "lib/Kconfig"