Kconfig 43 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523152415251526152715281529153015311532153315341535153615371538153915401541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610161116121613161416151616161716181619162016211622162316241625162616271628162916301631163216331634163516361637163816391640164116421643164416451646164716481649165016511652
  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. choice
  170. prompt "ARM system type"
  171. default ARCH_VERSATILE
  172. config ARCH_AAEC2000
  173. bool "Agilent AAEC-2000 based"
  174. select CPU_ARM920T
  175. select ARM_AMBA
  176. select HAVE_CLK
  177. help
  178. This enables support for systems based on the Agilent AAEC-2000
  179. config ARCH_INTEGRATOR
  180. bool "ARM Ltd. Integrator family"
  181. select ARM_AMBA
  182. select ARCH_HAS_CPUFREQ
  183. select HAVE_CLK
  184. select COMMON_CLKDEV
  185. select ICST525
  186. help
  187. Support for ARM's Integrator platform.
  188. config ARCH_REALVIEW
  189. bool "ARM Ltd. RealView family"
  190. select ARM_AMBA
  191. select HAVE_CLK
  192. select COMMON_CLKDEV
  193. select ICST307
  194. select GENERIC_TIME
  195. select GENERIC_CLOCKEVENTS
  196. select ARCH_WANT_OPTIONAL_GPIOLIB
  197. help
  198. This enables support for ARM Ltd RealView boards.
  199. config ARCH_VERSATILE
  200. bool "ARM Ltd. Versatile family"
  201. select ARM_AMBA
  202. select ARM_VIC
  203. select HAVE_CLK
  204. select COMMON_CLKDEV
  205. select ICST307
  206. select GENERIC_TIME
  207. select GENERIC_CLOCKEVENTS
  208. select ARCH_WANT_OPTIONAL_GPIOLIB
  209. help
  210. This enables support for ARM Ltd Versatile board.
  211. config ARCH_AT91
  212. bool "Atmel AT91"
  213. select GENERIC_GPIO
  214. select ARCH_REQUIRE_GPIOLIB
  215. select HAVE_CLK
  216. help
  217. This enables support for systems based on the Atmel AT91RM9200,
  218. AT91SAM9 and AT91CAP9 processors.
  219. config ARCH_CLPS711X
  220. bool "Cirrus Logic CLPS711x/EP721x-based"
  221. select CPU_ARM720T
  222. help
  223. Support for Cirrus Logic 711x/721x based boards.
  224. config ARCH_GEMINI
  225. bool "Cortina Systems Gemini"
  226. select CPU_FA526
  227. select GENERIC_GPIO
  228. select ARCH_REQUIRE_GPIOLIB
  229. help
  230. Support for the Cortina Systems Gemini family SoCs
  231. config ARCH_EBSA110
  232. bool "EBSA-110"
  233. select CPU_SA110
  234. select ISA
  235. select NO_IOPORT
  236. help
  237. This is an evaluation board for the StrongARM processor available
  238. from Digital. It has limited hardware on-board, including an
  239. Ethernet interface, two PCMCIA sockets, two serial ports and a
  240. parallel port.
  241. config ARCH_EP93XX
  242. bool "EP93xx-based"
  243. select CPU_ARM920T
  244. select ARM_AMBA
  245. select ARM_VIC
  246. select GENERIC_GPIO
  247. select HAVE_CLK
  248. select COMMON_CLKDEV
  249. select ARCH_REQUIRE_GPIOLIB
  250. select ARCH_HAS_HOLES_MEMORYMODEL
  251. help
  252. This enables support for the Cirrus EP93xx series of CPUs.
  253. config ARCH_FOOTBRIDGE
  254. bool "FootBridge"
  255. select CPU_SA110
  256. select FOOTBRIDGE
  257. help
  258. Support for systems based on the DC21285 companion chip
  259. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  260. config ARCH_MXC
  261. bool "Freescale MXC/iMX-based"
  262. select GENERIC_TIME
  263. select GENERIC_CLOCKEVENTS
  264. select ARCH_REQUIRE_GPIOLIB
  265. select HAVE_CLK
  266. select COMMON_CLKDEV
  267. help
  268. Support for Freescale MXC/iMX-based family of processors
  269. config ARCH_STMP3XXX
  270. bool "Freescale STMP3xxx"
  271. select CPU_ARM926T
  272. select HAVE_CLK
  273. select COMMON_CLKDEV
  274. select ARCH_REQUIRE_GPIOLIB
  275. select GENERIC_TIME
  276. select GENERIC_CLOCKEVENTS
  277. select GENERIC_GPIO
  278. select USB_ARCH_HAS_EHCI
  279. help
  280. Support for systems based on the Freescale 3xxx CPUs.
  281. config ARCH_NETX
  282. bool "Hilscher NetX based"
  283. select CPU_ARM926T
  284. select ARM_VIC
  285. select GENERIC_CLOCKEVENTS
  286. select GENERIC_TIME
  287. help
  288. This enables support for systems based on the Hilscher NetX Soc
  289. config ARCH_H720X
  290. bool "Hynix HMS720x-based"
  291. select CPU_ARM720T
  292. select ISA_DMA_API
  293. help
  294. This enables support for systems based on the Hynix HMS720x
  295. config ARCH_NOMADIK
  296. bool "STMicroelectronics Nomadik"
  297. select ARM_AMBA
  298. select ARM_VIC
  299. select CPU_ARM926T
  300. select HAVE_CLK
  301. select COMMON_CLKDEV
  302. select GENERIC_TIME
  303. select GENERIC_CLOCKEVENTS
  304. select GENERIC_GPIO
  305. select ARCH_REQUIRE_GPIOLIB
  306. help
  307. Support for the Nomadik platform by ST-Ericsson
  308. config ARCH_IOP13XX
  309. bool "IOP13xx-based"
  310. depends on MMU
  311. select CPU_XSC3
  312. select PLAT_IOP
  313. select PCI
  314. select ARCH_SUPPORTS_MSI
  315. select VMSPLIT_1G
  316. help
  317. Support for Intel's IOP13XX (XScale) family of processors.
  318. config ARCH_IOP32X
  319. bool "IOP32x-based"
  320. depends on MMU
  321. select CPU_XSCALE
  322. select PLAT_IOP
  323. select PCI
  324. select GENERIC_GPIO
  325. select ARCH_REQUIRE_GPIOLIB
  326. help
  327. Support for Intel's 80219 and IOP32X (XScale) family of
  328. processors.
  329. config ARCH_IOP33X
  330. bool "IOP33x-based"
  331. depends on MMU
  332. select CPU_XSCALE
  333. select PLAT_IOP
  334. select PCI
  335. select GENERIC_GPIO
  336. select ARCH_REQUIRE_GPIOLIB
  337. help
  338. Support for Intel's IOP33X (XScale) family of processors.
  339. config ARCH_IXP23XX
  340. bool "IXP23XX-based"
  341. depends on MMU
  342. select CPU_XSC3
  343. select PCI
  344. help
  345. Support for Intel's IXP23xx (XScale) family of processors.
  346. config ARCH_IXP2000
  347. bool "IXP2400/2800-based"
  348. depends on MMU
  349. select CPU_XSCALE
  350. select PCI
  351. help
  352. Support for Intel's IXP2400/2800 (XScale) family of processors.
  353. config ARCH_IXP4XX
  354. bool "IXP4xx-based"
  355. depends on MMU
  356. select CPU_XSCALE
  357. select GENERIC_GPIO
  358. select GENERIC_TIME
  359. select GENERIC_CLOCKEVENTS
  360. select DMABOUNCE if PCI
  361. help
  362. Support for Intel's IXP4XX (XScale) family of processors.
  363. config ARCH_L7200
  364. bool "LinkUp-L7200"
  365. select CPU_ARM720T
  366. select FIQ
  367. help
  368. Say Y here if you intend to run this kernel on a LinkUp Systems
  369. L7200 Software Development Board which uses an ARM720T processor.
  370. Information on this board can be obtained at:
  371. <http://www.linkupsys.com/>
  372. If you have any questions or comments about the Linux kernel port
  373. to this board, send e-mail to <sjhill@cotw.com>.
  374. config ARCH_DOVE
  375. bool "Marvell Dove"
  376. select PCI
  377. select GENERIC_GPIO
  378. select ARCH_REQUIRE_GPIOLIB
  379. select GENERIC_TIME
  380. select GENERIC_CLOCKEVENTS
  381. select PLAT_ORION
  382. help
  383. Support for the Marvell Dove SoC 88AP510
  384. config ARCH_KIRKWOOD
  385. bool "Marvell Kirkwood"
  386. select CPU_FEROCEON
  387. select PCI
  388. select GENERIC_GPIO
  389. select ARCH_REQUIRE_GPIOLIB
  390. select GENERIC_TIME
  391. select GENERIC_CLOCKEVENTS
  392. select PLAT_ORION
  393. help
  394. Support for the following Marvell Kirkwood series SoCs:
  395. 88F6180, 88F6192 and 88F6281.
  396. config ARCH_LOKI
  397. bool "Marvell Loki (88RC8480)"
  398. select CPU_FEROCEON
  399. select GENERIC_TIME
  400. select GENERIC_CLOCKEVENTS
  401. select PLAT_ORION
  402. help
  403. Support for the Marvell Loki (88RC8480) SoC.
  404. config ARCH_MV78XX0
  405. bool "Marvell MV78xx0"
  406. select CPU_FEROCEON
  407. select PCI
  408. select GENERIC_GPIO
  409. select ARCH_REQUIRE_GPIOLIB
  410. select GENERIC_TIME
  411. select GENERIC_CLOCKEVENTS
  412. select PLAT_ORION
  413. help
  414. Support for the following Marvell MV78xx0 series SoCs:
  415. MV781x0, MV782x0.
  416. config ARCH_ORION5X
  417. bool "Marvell Orion"
  418. depends on MMU
  419. select CPU_FEROCEON
  420. select PCI
  421. select GENERIC_GPIO
  422. select ARCH_REQUIRE_GPIOLIB
  423. select GENERIC_TIME
  424. select GENERIC_CLOCKEVENTS
  425. select PLAT_ORION
  426. help
  427. Support for the following Marvell Orion 5x series SoCs:
  428. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  429. Orion-2 (5281), Orion-1-90 (6183).
  430. config ARCH_MMP
  431. bool "Marvell PXA168/910/MMP2"
  432. depends on MMU
  433. select GENERIC_GPIO
  434. select ARCH_REQUIRE_GPIOLIB
  435. select HAVE_CLK
  436. select COMMON_CLKDEV
  437. select GENERIC_TIME
  438. select GENERIC_CLOCKEVENTS
  439. select TICK_ONESHOT
  440. select PLAT_PXA
  441. help
  442. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  443. config ARCH_KS8695
  444. bool "Micrel/Kendin KS8695"
  445. select CPU_ARM922T
  446. select GENERIC_GPIO
  447. select ARCH_REQUIRE_GPIOLIB
  448. help
  449. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  450. System-on-Chip devices.
  451. config ARCH_NS9XXX
  452. bool "NetSilicon NS9xxx"
  453. select CPU_ARM926T
  454. select GENERIC_GPIO
  455. select GENERIC_TIME
  456. select GENERIC_CLOCKEVENTS
  457. select HAVE_CLK
  458. help
  459. Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
  460. System.
  461. <http://www.digi.com/products/microprocessors/index.jsp>
  462. config ARCH_W90X900
  463. bool "Nuvoton W90X900 CPU"
  464. select CPU_ARM926T
  465. select ARCH_REQUIRE_GPIOLIB
  466. select GENERIC_GPIO
  467. select HAVE_CLK
  468. select COMMON_CLKDEV
  469. select GENERIC_TIME
  470. select GENERIC_CLOCKEVENTS
  471. help
  472. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  473. At present, the w90x900 has been renamed nuc900, regarding
  474. the ARM series product line, you can login the following
  475. link address to know more.
  476. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  477. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  478. config ARCH_NUC93X
  479. bool "Nuvoton NUC93X CPU"
  480. select CPU_ARM926T
  481. select HAVE_CLK
  482. select COMMON_CLKDEV
  483. help
  484. Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
  485. low-power and high performance MPEG-4/JPEG multimedia controller chip.
  486. config ARCH_PNX4008
  487. bool "Philips Nexperia PNX4008 Mobile"
  488. select CPU_ARM926T
  489. select HAVE_CLK
  490. select COMMON_CLKDEV
  491. help
  492. This enables support for Philips PNX4008 mobile platform.
  493. config ARCH_PXA
  494. bool "PXA2xx/PXA3xx-based"
  495. depends on MMU
  496. select ARCH_MTD_XIP
  497. select ARCH_HAS_CPUFREQ
  498. select GENERIC_GPIO
  499. select HAVE_CLK
  500. select COMMON_CLKDEV
  501. select ARCH_REQUIRE_GPIOLIB
  502. select GENERIC_TIME
  503. select GENERIC_CLOCKEVENTS
  504. select TICK_ONESHOT
  505. select PLAT_PXA
  506. help
  507. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  508. config ARCH_MSM
  509. bool "Qualcomm MSM"
  510. select CPU_V6
  511. select GENERIC_TIME
  512. select GENERIC_CLOCKEVENTS
  513. help
  514. Support for Qualcomm MSM7K based systems. This runs on the ARM11
  515. apps processor of the MSM7K and depends on a shared memory
  516. interface to the ARM9 modem processor which runs the baseband stack
  517. and controls some vital subsystems (clock and power control, etc).
  518. config ARCH_SHMOBILE
  519. bool "Renesas SH-Mobile"
  520. help
  521. Support for Renesas's SH-Mobile ARM platforms
  522. config ARCH_RPC
  523. bool "RiscPC"
  524. select ARCH_ACORN
  525. select FIQ
  526. select TIMER_ACORN
  527. select ARCH_MAY_HAVE_PC_FDC
  528. select HAVE_PATA_PLATFORM
  529. select ISA_DMA_API
  530. select NO_IOPORT
  531. select ARCH_SPARSEMEM_ENABLE
  532. help
  533. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  534. CD-ROM interface, serial and parallel port, and the floppy drive.
  535. config ARCH_SA1100
  536. bool "SA1100-based"
  537. select CPU_SA1100
  538. select ISA
  539. select ARCH_SPARSEMEM_ENABLE
  540. select ARCH_MTD_XIP
  541. select ARCH_HAS_CPUFREQ
  542. select CPU_FREQ
  543. select GENERIC_GPIO
  544. select GENERIC_TIME
  545. select GENERIC_CLOCKEVENTS
  546. select HAVE_CLK
  547. select TICK_ONESHOT
  548. select ARCH_REQUIRE_GPIOLIB
  549. help
  550. Support for StrongARM 11x0 based boards.
  551. config ARCH_S3C2410
  552. bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
  553. select GENERIC_GPIO
  554. select ARCH_HAS_CPUFREQ
  555. select HAVE_CLK
  556. help
  557. Samsung S3C2410X CPU based systems, such as the Simtec Electronics
  558. BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
  559. the Samsung SMDK2410 development board (and derivatives).
  560. config ARCH_S3C64XX
  561. bool "Samsung S3C64XX"
  562. select PLAT_SAMSUNG
  563. select CPU_V6
  564. select GENERIC_GPIO
  565. select ARM_VIC
  566. select HAVE_CLK
  567. select NO_IOPORT
  568. select ARCH_HAS_CPUFREQ
  569. select ARCH_REQUIRE_GPIOLIB
  570. select SAMSUNG_CLKSRC
  571. select SAMSUNG_IRQ_VIC_TIMER
  572. select SAMSUNG_IRQ_UART
  573. select S3C_GPIO_TRACK
  574. select S3C_GPIO_PULL_UPDOWN
  575. select S3C_GPIO_CFG_S3C24XX
  576. select S3C_GPIO_CFG_S3C64XX
  577. select S3C_DEV_NAND
  578. select USB_ARCH_HAS_OHCI
  579. select SAMSUNG_GPIOLIB_4BIT
  580. help
  581. Samsung S3C64XX series based systems
  582. config ARCH_S5P6440
  583. bool "Samsung S5P6440"
  584. select CPU_V6
  585. select GENERIC_GPIO
  586. select HAVE_CLK
  587. help
  588. Samsung S5P6440 CPU based systems
  589. config ARCH_S5P6442
  590. bool "Samsung S5P6442"
  591. select CPU_V6
  592. select GENERIC_GPIO
  593. select HAVE_CLK
  594. help
  595. Samsung S5P6442 CPU based systems
  596. config ARCH_S5PC1XX
  597. bool "Samsung S5PC1XX"
  598. select GENERIC_GPIO
  599. select HAVE_CLK
  600. select CPU_V7
  601. select ARM_L1_CACHE_SHIFT_6
  602. help
  603. Samsung S5PC1XX series based systems
  604. config ARCH_S5PV210
  605. bool "Samsung S5PV210/S5PC110"
  606. select CPU_V7
  607. select GENERIC_GPIO
  608. select HAVE_CLK
  609. select ARM_L1_CACHE_SHIFT_6
  610. help
  611. Samsung S5PV210/S5PC110 series based systems
  612. config ARCH_SHARK
  613. bool "Shark"
  614. select CPU_SA110
  615. select ISA
  616. select ISA_DMA
  617. select ZONE_DMA
  618. select PCI
  619. help
  620. Support for the StrongARM based Digital DNARD machine, also known
  621. as "Shark" (<http://www.shark-linux.de/shark.html>).
  622. config ARCH_LH7A40X
  623. bool "Sharp LH7A40X"
  624. select CPU_ARM922T
  625. select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
  626. select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
  627. help
  628. Say Y here for systems based on one of the Sharp LH7A40X
  629. System on a Chip processors. These CPUs include an ARM922T
  630. core with a wide array of integrated devices for
  631. hand-held and low-power applications.
  632. config ARCH_U300
  633. bool "ST-Ericsson U300 Series"
  634. depends on MMU
  635. select CPU_ARM926T
  636. select HAVE_TCM
  637. select ARM_AMBA
  638. select ARM_VIC
  639. select GENERIC_TIME
  640. select GENERIC_CLOCKEVENTS
  641. select HAVE_CLK
  642. select COMMON_CLKDEV
  643. select GENERIC_GPIO
  644. help
  645. Support for ST-Ericsson U300 series mobile platforms.
  646. config ARCH_DAVINCI
  647. bool "TI DaVinci"
  648. select CPU_ARM926T
  649. select GENERIC_TIME
  650. select GENERIC_CLOCKEVENTS
  651. select GENERIC_GPIO
  652. select ARCH_REQUIRE_GPIOLIB
  653. select HAVE_CLK
  654. select ZONE_DMA
  655. select HAVE_IDE
  656. select COMMON_CLKDEV
  657. select GENERIC_ALLOCATOR
  658. select ARCH_HAS_HOLES_MEMORYMODEL
  659. help
  660. Support for TI's DaVinci platform.
  661. config ARCH_OMAP
  662. bool "TI OMAP"
  663. select GENERIC_GPIO
  664. select HAVE_CLK
  665. select ARCH_REQUIRE_GPIOLIB
  666. select ARCH_HAS_CPUFREQ
  667. select GENERIC_TIME
  668. select GENERIC_CLOCKEVENTS
  669. select ARCH_HAS_HOLES_MEMORYMODEL
  670. help
  671. Support for TI's OMAP platform (OMAP1 and OMAP2).
  672. config ARCH_BCMRING
  673. bool "Broadcom BCMRING"
  674. depends on MMU
  675. select CPU_V6
  676. select ARM_AMBA
  677. select COMMON_CLKDEV
  678. select GENERIC_TIME
  679. select GENERIC_CLOCKEVENTS
  680. select ARCH_WANT_OPTIONAL_GPIOLIB
  681. help
  682. Support for Broadcom's BCMRing platform.
  683. config ARCH_U8500
  684. bool "ST-Ericsson U8500 Series"
  685. select CPU_V7
  686. select ARM_AMBA
  687. select GENERIC_TIME
  688. select GENERIC_CLOCKEVENTS
  689. select COMMON_CLKDEV
  690. help
  691. Support for ST-Ericsson's Ux500 architecture
  692. endchoice
  693. source "arch/arm/mach-aaec2000/Kconfig"
  694. source "arch/arm/mach-at91/Kconfig"
  695. source "arch/arm/mach-bcmring/Kconfig"
  696. source "arch/arm/mach-clps711x/Kconfig"
  697. source "arch/arm/mach-davinci/Kconfig"
  698. source "arch/arm/mach-dove/Kconfig"
  699. source "arch/arm/mach-ep93xx/Kconfig"
  700. source "arch/arm/mach-footbridge/Kconfig"
  701. source "arch/arm/mach-gemini/Kconfig"
  702. source "arch/arm/mach-h720x/Kconfig"
  703. source "arch/arm/mach-integrator/Kconfig"
  704. source "arch/arm/mach-iop32x/Kconfig"
  705. source "arch/arm/mach-iop33x/Kconfig"
  706. source "arch/arm/mach-iop13xx/Kconfig"
  707. source "arch/arm/mach-ixp4xx/Kconfig"
  708. source "arch/arm/mach-ixp2000/Kconfig"
  709. source "arch/arm/mach-ixp23xx/Kconfig"
  710. source "arch/arm/mach-kirkwood/Kconfig"
  711. source "arch/arm/mach-ks8695/Kconfig"
  712. source "arch/arm/mach-lh7a40x/Kconfig"
  713. source "arch/arm/mach-loki/Kconfig"
  714. source "arch/arm/mach-msm/Kconfig"
  715. source "arch/arm/mach-mv78xx0/Kconfig"
  716. source "arch/arm/plat-mxc/Kconfig"
  717. source "arch/arm/mach-netx/Kconfig"
  718. source "arch/arm/mach-nomadik/Kconfig"
  719. source "arch/arm/plat-nomadik/Kconfig"
  720. source "arch/arm/mach-ns9xxx/Kconfig"
  721. source "arch/arm/mach-nuc93x/Kconfig"
  722. source "arch/arm/plat-omap/Kconfig"
  723. source "arch/arm/mach-omap1/Kconfig"
  724. source "arch/arm/mach-omap2/Kconfig"
  725. source "arch/arm/mach-orion5x/Kconfig"
  726. source "arch/arm/mach-pxa/Kconfig"
  727. source "arch/arm/plat-pxa/Kconfig"
  728. source "arch/arm/mach-mmp/Kconfig"
  729. source "arch/arm/mach-realview/Kconfig"
  730. source "arch/arm/mach-sa1100/Kconfig"
  731. source "arch/arm/plat-samsung/Kconfig"
  732. source "arch/arm/plat-s3c24xx/Kconfig"
  733. source "arch/arm/plat-s5p/Kconfig"
  734. source "arch/arm/plat-s5pc1xx/Kconfig"
  735. if ARCH_S3C2410
  736. source "arch/arm/mach-s3c2400/Kconfig"
  737. source "arch/arm/mach-s3c2410/Kconfig"
  738. source "arch/arm/mach-s3c2412/Kconfig"
  739. source "arch/arm/mach-s3c2440/Kconfig"
  740. source "arch/arm/mach-s3c2443/Kconfig"
  741. endif
  742. if ARCH_S3C64XX
  743. source "arch/arm/mach-s3c64xx/Kconfig"
  744. endif
  745. source "arch/arm/mach-s5p6440/Kconfig"
  746. source "arch/arm/mach-s5p6442/Kconfig"
  747. if ARCH_S5PC1XX
  748. source "arch/arm/mach-s5pc100/Kconfig"
  749. endif
  750. source "arch/arm/mach-s5pv210/Kconfig"
  751. source "arch/arm/mach-shmobile/Kconfig"
  752. source "arch/arm/plat-stmp3xxx/Kconfig"
  753. source "arch/arm/mach-u300/Kconfig"
  754. source "arch/arm/mach-ux500/Kconfig"
  755. source "arch/arm/mach-versatile/Kconfig"
  756. source "arch/arm/mach-w90x900/Kconfig"
  757. # Definitions to make life easier
  758. config ARCH_ACORN
  759. bool
  760. config PLAT_IOP
  761. bool
  762. select GENERIC_CLOCKEVENTS
  763. select GENERIC_TIME
  764. config PLAT_ORION
  765. bool
  766. config PLAT_PXA
  767. bool
  768. source arch/arm/mm/Kconfig
  769. config IWMMXT
  770. bool "Enable iWMMXt support"
  771. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
  772. default y if PXA27x || PXA3xx || ARCH_MMP
  773. help
  774. Enable support for iWMMXt context switching at run time if
  775. running on a CPU that supports it.
  776. # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
  777. config XSCALE_PMU
  778. bool
  779. depends on CPU_XSCALE && !XSCALE_PMU_TIMER
  780. default y
  781. config CPU_HAS_PMU
  782. depends on CPU_V6 || CPU_V7 || XSCALE_PMU
  783. default y
  784. bool
  785. if !MMU
  786. source "arch/arm/Kconfig-nommu"
  787. endif
  788. config ARM_ERRATA_411920
  789. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  790. depends on CPU_V6 && !SMP
  791. help
  792. Invalidation of the Instruction Cache operation can
  793. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  794. It does not affect the MPCore. This option enables the ARM Ltd.
  795. recommended workaround.
  796. config ARM_ERRATA_430973
  797. bool "ARM errata: Stale prediction on replaced interworking branch"
  798. depends on CPU_V7
  799. help
  800. This option enables the workaround for the 430973 Cortex-A8
  801. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  802. interworking branch is replaced with another code sequence at the
  803. same virtual address, whether due to self-modifying code or virtual
  804. to physical address re-mapping, Cortex-A8 does not recover from the
  805. stale interworking branch prediction. This results in Cortex-A8
  806. executing the new code sequence in the incorrect ARM or Thumb state.
  807. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  808. and also flushes the branch target cache at every context switch.
  809. Note that setting specific bits in the ACTLR register may not be
  810. available in non-secure mode.
  811. config ARM_ERRATA_458693
  812. bool "ARM errata: Processor deadlock when a false hazard is created"
  813. depends on CPU_V7
  814. help
  815. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  816. erratum. For very specific sequences of memory operations, it is
  817. possible for a hazard condition intended for a cache line to instead
  818. be incorrectly associated with a different cache line. This false
  819. hazard might then cause a processor deadlock. The workaround enables
  820. the L1 caching of the NEON accesses and disables the PLD instruction
  821. in the ACTLR register. Note that setting specific bits in the ACTLR
  822. register may not be available in non-secure mode.
  823. config ARM_ERRATA_460075
  824. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  825. depends on CPU_V7
  826. help
  827. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  828. erratum. Any asynchronous access to the L2 cache may encounter a
  829. situation in which recent store transactions to the L2 cache are lost
  830. and overwritten with stale memory contents from external memory. The
  831. workaround disables the write-allocate mode for the L2 cache via the
  832. ACTLR register. Note that setting specific bits in the ACTLR register
  833. may not be available in non-secure mode.
  834. config PL310_ERRATA_588369
  835. bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
  836. depends on CACHE_L2X0 && ARCH_OMAP4
  837. help
  838. The PL310 L2 cache controller implements three types of Clean &
  839. Invalidate maintenance operations: by Physical Address
  840. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  841. They are architecturally defined to behave as the execution of a
  842. clean operation followed immediately by an invalidate operation,
  843. both performing to the same memory location. This functionality
  844. is not correctly implemented in PL310 as clean lines are not
  845. invalidated as a result of these operations. Note that this errata
  846. uses Texas Instrument's secure monitor api.
  847. endmenu
  848. source "arch/arm/common/Kconfig"
  849. config FORCE_MAX_ZONEORDER
  850. int
  851. depends on SA1111
  852. default "9"
  853. menu "Bus support"
  854. config ARM_AMBA
  855. bool
  856. config ISA
  857. bool
  858. help
  859. Find out whether you have ISA slots on your motherboard. ISA is the
  860. name of a bus system, i.e. the way the CPU talks to the other stuff
  861. inside your box. Other bus systems are PCI, EISA, MicroChannel
  862. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  863. newer boards don't support it. If you have ISA, say Y, otherwise N.
  864. # Select ISA DMA controller support
  865. config ISA_DMA
  866. bool
  867. select ISA_DMA_API
  868. # Select ISA DMA interface
  869. config ISA_DMA_API
  870. bool
  871. config PCI
  872. bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
  873. help
  874. Find out whether you have a PCI motherboard. PCI is the name of a
  875. bus system, i.e. the way the CPU talks to the other stuff inside
  876. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  877. VESA. If you have PCI, say Y, otherwise N.
  878. config PCI_SYSCALL
  879. def_bool PCI
  880. # Select the host bridge type
  881. config PCI_HOST_VIA82C505
  882. bool
  883. depends on PCI && ARCH_SHARK
  884. default y
  885. config PCI_HOST_ITE8152
  886. bool
  887. depends on PCI && MACH_ARMCORE
  888. default y
  889. select DMABOUNCE
  890. source "drivers/pci/Kconfig"
  891. source "drivers/pcmcia/Kconfig"
  892. endmenu
  893. menu "Kernel Features"
  894. source "kernel/time/Kconfig"
  895. config SMP
  896. bool "Symmetric Multi-Processing (EXPERIMENTAL)"
  897. depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
  898. MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  899. depends on GENERIC_CLOCKEVENTS
  900. select USE_GENERIC_SMP_HELPERS
  901. select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  902. help
  903. This enables support for systems with more than one CPU. If you have
  904. a system with only one CPU, like most personal computers, say N. If
  905. you have a system with more than one CPU, say Y.
  906. If you say N here, the kernel will run on single and multiprocessor
  907. machines, but will use only one CPU of a multiprocessor machine. If
  908. you say Y here, the kernel will run on many, but not all, single
  909. processor machines. On a single processor machine, the kernel will
  910. run faster if you say N here.
  911. See also <file:Documentation/i386/IO-APIC.txt>,
  912. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  913. <http://www.linuxdoc.org/docs.html#howto>.
  914. If you don't know what to do here, say N.
  915. config HAVE_ARM_SCU
  916. bool
  917. depends on SMP
  918. help
  919. This option enables support for the ARM system coherency unit
  920. config HAVE_ARM_TWD
  921. bool
  922. depends on SMP
  923. help
  924. This options enables support for the ARM timer and watchdog unit
  925. choice
  926. prompt "Memory split"
  927. default VMSPLIT_3G
  928. help
  929. Select the desired split between kernel and user memory.
  930. If you are not absolutely sure what you are doing, leave this
  931. option alone!
  932. config VMSPLIT_3G
  933. bool "3G/1G user/kernel split"
  934. config VMSPLIT_2G
  935. bool "2G/2G user/kernel split"
  936. config VMSPLIT_1G
  937. bool "1G/3G user/kernel split"
  938. endchoice
  939. config PAGE_OFFSET
  940. hex
  941. default 0x40000000 if VMSPLIT_1G
  942. default 0x80000000 if VMSPLIT_2G
  943. default 0xC0000000
  944. config NR_CPUS
  945. int "Maximum number of CPUs (2-32)"
  946. range 2 32
  947. depends on SMP
  948. default "4"
  949. config HOTPLUG_CPU
  950. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  951. depends on SMP && HOTPLUG && EXPERIMENTAL
  952. help
  953. Say Y here to experiment with turning CPUs off and on. CPUs
  954. can be controlled through /sys/devices/system/cpu.
  955. config LOCAL_TIMERS
  956. bool "Use local timer interrupts"
  957. depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
  958. REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
  959. default y
  960. select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
  961. help
  962. Enable support for local timers on SMP platforms, rather then the
  963. legacy IPI broadcast method. Local timers allows the system
  964. accounting to be spread across the timer interval, preventing a
  965. "thundering herd" at every timer tick.
  966. source kernel/Kconfig.preempt
  967. config HZ
  968. int
  969. default 128 if ARCH_L7200
  970. default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
  971. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  972. default AT91_TIMER_HZ if ARCH_AT91
  973. default 100
  974. config THUMB2_KERNEL
  975. bool "Compile the kernel in Thumb-2 mode"
  976. depends on CPU_V7 && EXPERIMENTAL
  977. select AEABI
  978. select ARM_ASM_UNIFIED
  979. help
  980. By enabling this option, the kernel will be compiled in
  981. Thumb-2 mode. A compiler/assembler that understand the unified
  982. ARM-Thumb syntax is needed.
  983. If unsure, say N.
  984. config ARM_ASM_UNIFIED
  985. bool
  986. config AEABI
  987. bool "Use the ARM EABI to compile the kernel"
  988. help
  989. This option allows for the kernel to be compiled using the latest
  990. ARM ABI (aka EABI). This is only useful if you are using a user
  991. space environment that is also compiled with EABI.
  992. Since there are major incompatibilities between the legacy ABI and
  993. EABI, especially with regard to structure member alignment, this
  994. option also changes the kernel syscall calling convention to
  995. disambiguate both ABIs and allow for backward compatibility support
  996. (selected with CONFIG_OABI_COMPAT).
  997. To use this you need GCC version 4.0.0 or later.
  998. config OABI_COMPAT
  999. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1000. depends on AEABI && EXPERIMENTAL
  1001. default y
  1002. help
  1003. This option preserves the old syscall interface along with the
  1004. new (ARM EABI) one. It also provides a compatibility layer to
  1005. intercept syscalls that have structure arguments which layout
  1006. in memory differs between the legacy ABI and the new ARM EABI
  1007. (only for non "thumb" binaries). This option adds a tiny
  1008. overhead to all syscalls and produces a slightly larger kernel.
  1009. If you know you'll be using only pure EABI user space then you
  1010. can say N here. If this option is not selected and you attempt
  1011. to execute a legacy ABI binary then the result will be
  1012. UNPREDICTABLE (in fact it can be predicted that it won't work
  1013. at all). If in doubt say Y.
  1014. config ARCH_HAS_HOLES_MEMORYMODEL
  1015. bool
  1016. # Discontigmem is deprecated
  1017. config ARCH_DISCONTIGMEM_ENABLE
  1018. bool
  1019. config ARCH_SPARSEMEM_ENABLE
  1020. bool
  1021. config ARCH_SPARSEMEM_DEFAULT
  1022. def_bool ARCH_SPARSEMEM_ENABLE
  1023. config ARCH_SELECT_MEMORY_MODEL
  1024. def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
  1025. config NODES_SHIFT
  1026. int
  1027. default "4" if ARCH_LH7A40X
  1028. default "2"
  1029. depends on NEED_MULTIPLE_NODES
  1030. config HIGHMEM
  1031. bool "High Memory Support (EXPERIMENTAL)"
  1032. depends on MMU && EXPERIMENTAL
  1033. help
  1034. The address space of ARM processors is only 4 Gigabytes large
  1035. and it has to accommodate user address space, kernel address
  1036. space as well as some memory mapped IO. That means that, if you
  1037. have a large amount of physical memory and/or IO, not all of the
  1038. memory can be "permanently mapped" by the kernel. The physical
  1039. memory that is not permanently mapped is called "high memory".
  1040. Depending on the selected kernel/user memory split, minimum
  1041. vmalloc space and actual amount of RAM, you may not need this
  1042. option which should result in a slightly faster kernel.
  1043. If unsure, say n.
  1044. config HIGHPTE
  1045. bool "Allocate 2nd-level pagetables from highmem"
  1046. depends on HIGHMEM
  1047. depends on !OUTER_CACHE
  1048. config HW_PERF_EVENTS
  1049. bool "Enable hardware performance counter support for perf events"
  1050. depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
  1051. default y
  1052. help
  1053. Enable hardware performance counter support for perf events. If
  1054. disabled, perf events will use software events only.
  1055. source "mm/Kconfig"
  1056. config LEDS
  1057. bool "Timer and CPU usage LEDs"
  1058. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1059. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1060. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1061. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1062. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1063. ARCH_AT91 || ARCH_DAVINCI || \
  1064. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1065. help
  1066. If you say Y here, the LEDs on your machine will be used
  1067. to provide useful information about your current system status.
  1068. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1069. be able to select which LEDs are active using the options below. If
  1070. you are compiling a kernel for the EBSA-110 or the LART however, the
  1071. red LED will simply flash regularly to indicate that the system is
  1072. still functional. It is safe to say Y here if you have a CATS
  1073. system, but the driver will do nothing.
  1074. config LEDS_TIMER
  1075. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1076. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1077. || MACH_OMAP_PERSEUS2
  1078. depends on LEDS
  1079. depends on !GENERIC_CLOCKEVENTS
  1080. default y if ARCH_EBSA110
  1081. help
  1082. If you say Y here, one of the system LEDs (the green one on the
  1083. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1084. will flash regularly to indicate that the system is still
  1085. operational. This is mainly useful to kernel hackers who are
  1086. debugging unstable kernels.
  1087. The LART uses the same LED for both Timer LED and CPU usage LED
  1088. functions. You may choose to use both, but the Timer LED function
  1089. will overrule the CPU usage LED.
  1090. config LEDS_CPU
  1091. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1092. !ARCH_OMAP) \
  1093. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1094. || MACH_OMAP_PERSEUS2
  1095. depends on LEDS
  1096. help
  1097. If you say Y here, the red LED will be used to give a good real
  1098. time indication of CPU usage, by lighting whenever the idle task
  1099. is not currently executing.
  1100. The LART uses the same LED for both Timer LED and CPU usage LED
  1101. functions. You may choose to use both, but the Timer LED function
  1102. will overrule the CPU usage LED.
  1103. config ALIGNMENT_TRAP
  1104. bool
  1105. depends on CPU_CP15_MMU
  1106. default y if !ARCH_EBSA110
  1107. select HAVE_PROC_CPU if PROC_FS
  1108. help
  1109. ARM processors cannot fetch/store information which is not
  1110. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1111. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1112. fetch/store instructions will be emulated in software if you say
  1113. here, which has a severe performance impact. This is necessary for
  1114. correct operation of some network protocols. With an IP-only
  1115. configuration it is safe to say N, otherwise say Y.
  1116. config UACCESS_WITH_MEMCPY
  1117. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1118. depends on MMU && EXPERIMENTAL
  1119. default y if CPU_FEROCEON
  1120. help
  1121. Implement faster copy_to_user and clear_user methods for CPU
  1122. cores where a 8-word STM instruction give significantly higher
  1123. memory write throughput than a sequence of individual 32bit stores.
  1124. A possible side effect is a slight increase in scheduling latency
  1125. between threads sharing the same address space if they invoke
  1126. such copy operations with large buffers.
  1127. However, if the CPU data cache is using a write-allocate mode,
  1128. this option is unlikely to provide any performance gain.
  1129. endmenu
  1130. menu "Boot options"
  1131. # Compressed boot loader in ROM. Yes, we really want to ask about
  1132. # TEXT and BSS so we preserve their values in the config files.
  1133. config ZBOOT_ROM_TEXT
  1134. hex "Compressed ROM boot loader base address"
  1135. default "0"
  1136. help
  1137. The physical address at which the ROM-able zImage is to be
  1138. placed in the target. Platforms which normally make use of
  1139. ROM-able zImage formats normally set this to a suitable
  1140. value in their defconfig file.
  1141. If ZBOOT_ROM is not enabled, this has no effect.
  1142. config ZBOOT_ROM_BSS
  1143. hex "Compressed ROM boot loader BSS address"
  1144. default "0"
  1145. help
  1146. The base address of an area of read/write memory in the target
  1147. for the ROM-able zImage which must be available while the
  1148. decompressor is running. It must be large enough to hold the
  1149. entire decompressed kernel plus an additional 128 KiB.
  1150. Platforms which normally make use of ROM-able zImage formats
  1151. normally set this to a suitable value in their defconfig file.
  1152. If ZBOOT_ROM is not enabled, this has no effect.
  1153. config ZBOOT_ROM
  1154. bool "Compressed boot loader in ROM/flash"
  1155. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1156. help
  1157. Say Y here if you intend to execute your compressed kernel image
  1158. (zImage) directly from ROM or flash. If unsure, say N.
  1159. config CMDLINE
  1160. string "Default kernel command string"
  1161. default ""
  1162. help
  1163. On some architectures (EBSA110 and CATS), there is currently no way
  1164. for the boot loader to pass arguments to the kernel. For these
  1165. architectures, you should supply some command-line options at build
  1166. time by entering them here. As a minimum, you should specify the
  1167. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1168. config XIP_KERNEL
  1169. bool "Kernel Execute-In-Place from ROM"
  1170. depends on !ZBOOT_ROM
  1171. help
  1172. Execute-In-Place allows the kernel to run from non-volatile storage
  1173. directly addressable by the CPU, such as NOR flash. This saves RAM
  1174. space since the text section of the kernel is not loaded from flash
  1175. to RAM. Read-write sections, such as the data section and stack,
  1176. are still copied to RAM. The XIP kernel is not compressed since
  1177. it has to run directly from flash, so it will take more space to
  1178. store it. The flash address used to link the kernel object files,
  1179. and for storing it, is configuration dependent. Therefore, if you
  1180. say Y here, you must know the proper physical address where to
  1181. store the kernel image depending on your own flash memory usage.
  1182. Also note that the make target becomes "make xipImage" rather than
  1183. "make zImage" or "make Image". The final kernel binary to put in
  1184. ROM memory will be arch/arm/boot/xipImage.
  1185. If unsure, say N.
  1186. config XIP_PHYS_ADDR
  1187. hex "XIP Kernel Physical Location"
  1188. depends on XIP_KERNEL
  1189. default "0x00080000"
  1190. help
  1191. This is the physical address in your flash memory the kernel will
  1192. be linked for and stored to. This address is dependent on your
  1193. own flash usage.
  1194. config KEXEC
  1195. bool "Kexec system call (EXPERIMENTAL)"
  1196. depends on EXPERIMENTAL
  1197. help
  1198. kexec is a system call that implements the ability to shutdown your
  1199. current kernel, and to start another kernel. It is like a reboot
  1200. but it is independent of the system firmware. And like a reboot
  1201. you can start any kernel with it, not just Linux.
  1202. It is an ongoing process to be certain the hardware in a machine
  1203. is properly shutdown, so do not be surprised if this code does not
  1204. initially work for you. It may help to enable device hotplugging
  1205. support.
  1206. config ATAGS_PROC
  1207. bool "Export atags in procfs"
  1208. depends on KEXEC
  1209. default y
  1210. help
  1211. Should the atags used to boot the kernel be exported in an "atags"
  1212. file in procfs. Useful with kexec.
  1213. endmenu
  1214. menu "CPU Power Management"
  1215. if ARCH_HAS_CPUFREQ
  1216. source "drivers/cpufreq/Kconfig"
  1217. config CPU_FREQ_SA1100
  1218. bool
  1219. config CPU_FREQ_SA1110
  1220. bool
  1221. config CPU_FREQ_INTEGRATOR
  1222. tristate "CPUfreq driver for ARM Integrator CPUs"
  1223. depends on ARCH_INTEGRATOR && CPU_FREQ
  1224. default y
  1225. help
  1226. This enables the CPUfreq driver for ARM Integrator CPUs.
  1227. For details, take a look at <file:Documentation/cpu-freq>.
  1228. If in doubt, say Y.
  1229. config CPU_FREQ_PXA
  1230. bool
  1231. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1232. default y
  1233. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1234. config CPU_FREQ_S3C64XX
  1235. bool "CPUfreq support for Samsung S3C64XX CPUs"
  1236. depends on CPU_FREQ && CPU_S3C6410
  1237. config CPU_FREQ_S3C
  1238. bool
  1239. help
  1240. Internal configuration node for common cpufreq on Samsung SoC
  1241. config CPU_FREQ_S3C24XX
  1242. bool "CPUfreq driver for Samsung S3C24XX series CPUs"
  1243. depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
  1244. select CPU_FREQ_S3C
  1245. help
  1246. This enables the CPUfreq driver for the Samsung S3C24XX family
  1247. of CPUs.
  1248. For details, take a look at <file:Documentation/cpu-freq>.
  1249. If in doubt, say N.
  1250. config CPU_FREQ_S3C24XX_PLL
  1251. bool "Support CPUfreq changing of PLL frequency"
  1252. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1253. help
  1254. Compile in support for changing the PLL frequency from the
  1255. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1256. after a frequency change, so by default it is not enabled.
  1257. This also means that the PLL tables for the selected CPU(s) will
  1258. be built which may increase the size of the kernel image.
  1259. config CPU_FREQ_S3C24XX_DEBUG
  1260. bool "Debug CPUfreq Samsung driver core"
  1261. depends on CPU_FREQ_S3C24XX
  1262. help
  1263. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1264. config CPU_FREQ_S3C24XX_IODEBUG
  1265. bool "Debug CPUfreq Samsung driver IO timing"
  1266. depends on CPU_FREQ_S3C24XX
  1267. help
  1268. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1269. config CPU_FREQ_S3C24XX_DEBUGFS
  1270. bool "Export debugfs for CPUFreq"
  1271. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1272. help
  1273. Export status information via debugfs.
  1274. endif
  1275. source "drivers/cpuidle/Kconfig"
  1276. endmenu
  1277. menu "Floating point emulation"
  1278. comment "At least one emulation must be selected"
  1279. config FPE_NWFPE
  1280. bool "NWFPE math emulation"
  1281. depends on !AEABI || OABI_COMPAT
  1282. ---help---
  1283. Say Y to include the NWFPE floating point emulator in the kernel.
  1284. This is necessary to run most binaries. Linux does not currently
  1285. support floating point hardware so you need to say Y here even if
  1286. your machine has an FPA or floating point co-processor podule.
  1287. You may say N here if you are going to load the Acorn FPEmulator
  1288. early in the bootup.
  1289. config FPE_NWFPE_XP
  1290. bool "Support extended precision"
  1291. depends on FPE_NWFPE
  1292. help
  1293. Say Y to include 80-bit support in the kernel floating-point
  1294. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1295. Note that gcc does not generate 80-bit operations by default,
  1296. so in most cases this option only enlarges the size of the
  1297. floating point emulator without any good reason.
  1298. You almost surely want to say N here.
  1299. config FPE_FASTFPE
  1300. bool "FastFPE math emulation (EXPERIMENTAL)"
  1301. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1302. ---help---
  1303. Say Y here to include the FAST floating point emulator in the kernel.
  1304. This is an experimental much faster emulator which now also has full
  1305. precision for the mantissa. It does not support any exceptions.
  1306. It is very simple, and approximately 3-6 times faster than NWFPE.
  1307. It should be sufficient for most programs. It may be not suitable
  1308. for scientific calculations, but you have to check this for yourself.
  1309. If you do not feel you need a faster FP emulation you should better
  1310. choose NWFPE.
  1311. config VFP
  1312. bool "VFP-format floating point maths"
  1313. depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1314. help
  1315. Say Y to include VFP support code in the kernel. This is needed
  1316. if your hardware includes a VFP unit.
  1317. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1318. release notes and additional status information.
  1319. Say N if your target does not have VFP hardware.
  1320. config VFPv3
  1321. bool
  1322. depends on VFP
  1323. default y if CPU_V7
  1324. config NEON
  1325. bool "Advanced SIMD (NEON) Extension support"
  1326. depends on VFPv3 && CPU_V7
  1327. help
  1328. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1329. Extension.
  1330. endmenu
  1331. menu "Userspace binary formats"
  1332. source "fs/Kconfig.binfmt"
  1333. config ARTHUR
  1334. tristate "RISC OS personality"
  1335. depends on !AEABI
  1336. help
  1337. Say Y here to include the kernel code necessary if you want to run
  1338. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1339. experimental; if this sounds frightening, say N and sleep in peace.
  1340. You can also say M here to compile this support as a module (which
  1341. will be called arthur).
  1342. endmenu
  1343. menu "Power management options"
  1344. source "kernel/power/Kconfig"
  1345. config ARCH_SUSPEND_POSSIBLE
  1346. def_bool y
  1347. endmenu
  1348. source "net/Kconfig"
  1349. source "drivers/Kconfig"
  1350. source "fs/Kconfig"
  1351. source "arch/arm/Kconfig.debug"
  1352. source "security/Kconfig"
  1353. source "crypto/Kconfig"
  1354. source "lib/Kconfig"