Kconfig 65 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960196119621963196419651966196719681969197019711972197319741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050205120522053205420552056205720582059206020612062206320642065206620672068206920702071207220732074207520762077207820792080208120822083208420852086208720882089209020912092209320942095209620972098209921002101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170217121722173217421752176217721782179218021812182218321842185218621872188218921902191219221932194219521962197219821992200220122022203220422052206220722082209221022112212221322142215221622172218221922202221222222232224222522262227222822292230223122322233223422352236223722382239224022412242224322442245224622472248224922502251225222532254225522562257225822592260226122622263226422652266226722682269227022712272227322742275227622772278227922802281228222832284228522862287228822892290229122922293229422952296229722982299230023012302230323042305230623072308230923102311231223132314231523162317231823192320
  1. config ARM
  2. bool
  3. default y
  4. select ARCH_BINFMT_ELF_RANDOMIZE_PIE
  5. select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  6. select ARCH_HAVE_CUSTOM_GPIO_H
  7. select ARCH_WANT_IPC_PARSE_VERSION
  8. select BUILDTIME_EXTABLE_SORT if MMU
  9. select CPU_PM if (SUSPEND || CPU_IDLE)
  10. select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN && MMU
  11. select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
  12. select GENERIC_CLOCKEVENTS_BROADCAST if SMP
  13. select GENERIC_IRQ_PROBE
  14. select GENERIC_IRQ_SHOW
  15. select GENERIC_KERNEL_THREAD
  16. select GENERIC_KERNEL_EXECVE
  17. select GENERIC_PCI_IOMAP
  18. select GENERIC_SMP_IDLE_THREAD
  19. select GENERIC_STRNCPY_FROM_USER
  20. select GENERIC_STRNLEN_USER
  21. select HARDIRQS_SW_RESEND
  22. select HAVE_AOUT
  23. select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
  24. select HAVE_ARCH_KGDB
  25. select HAVE_ARCH_SECCOMP_FILTER
  26. select HAVE_ARCH_TRACEHOOK
  27. select HAVE_BPF_JIT
  28. select HAVE_C_RECORDMCOUNT
  29. select HAVE_DEBUG_KMEMLEAK
  30. select HAVE_DMA_API_DEBUG
  31. select HAVE_DMA_ATTRS
  32. select HAVE_DMA_CONTIGUOUS if MMU
  33. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  34. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  35. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  36. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  37. select HAVE_GENERIC_DMA_COHERENT
  38. select HAVE_GENERIC_HARDIRQS
  39. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
  40. select HAVE_IDE if PCI || ISA || PCMCIA
  41. select HAVE_IRQ_WORK
  42. select HAVE_KERNEL_GZIP
  43. select HAVE_KERNEL_LZMA
  44. select HAVE_KERNEL_LZO
  45. select HAVE_KERNEL_XZ
  46. select HAVE_KPROBES if !XIP_KERNEL
  47. select HAVE_KRETPROBES if (HAVE_KPROBES)
  48. select HAVE_MEMBLOCK
  49. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  50. select HAVE_PERF_EVENTS
  51. select HAVE_REGS_AND_STACK_ACCESS_API
  52. select HAVE_SYSCALL_TRACEPOINTS
  53. select HAVE_UID16
  54. select KTIME_SCALAR
  55. select PERF_USE_VMALLOC
  56. select RTC_LIB
  57. select SYS_SUPPORTS_APM_EMULATION
  58. select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
  59. select MODULES_USE_ELF_REL
  60. help
  61. The ARM series is a line of low-power-consumption RISC chip designs
  62. licensed by ARM Ltd and targeted at embedded applications and
  63. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  64. manufactured, but legacy ARM-based PC hardware remains popular in
  65. Europe. There is an ARM Linux project with a web page at
  66. <http://www.arm.linux.org.uk/>.
  67. config ARM_HAS_SG_CHAIN
  68. bool
  69. config NEED_SG_DMA_LENGTH
  70. bool
  71. config ARM_DMA_USE_IOMMU
  72. bool
  73. select ARM_HAS_SG_CHAIN
  74. select NEED_SG_DMA_LENGTH
  75. config HAVE_PWM
  76. bool
  77. config MIGHT_HAVE_PCI
  78. bool
  79. config SYS_SUPPORTS_APM_EMULATION
  80. bool
  81. config GENERIC_GPIO
  82. bool
  83. config HAVE_TCM
  84. bool
  85. select GENERIC_ALLOCATOR
  86. config HAVE_PROC_CPU
  87. bool
  88. config NO_IOPORT
  89. bool
  90. config EISA
  91. bool
  92. ---help---
  93. The Extended Industry Standard Architecture (EISA) bus was
  94. developed as an open alternative to the IBM MicroChannel bus.
  95. The EISA bus provided some of the features of the IBM MicroChannel
  96. bus while maintaining backward compatibility with cards made for
  97. the older ISA bus. The EISA bus saw limited use between 1988 and
  98. 1995 when it was made obsolete by the PCI bus.
  99. Say Y here if you are building a kernel for an EISA-based machine.
  100. Otherwise, say N.
  101. config SBUS
  102. bool
  103. config STACKTRACE_SUPPORT
  104. bool
  105. default y
  106. config HAVE_LATENCYTOP_SUPPORT
  107. bool
  108. depends on !SMP
  109. default y
  110. config LOCKDEP_SUPPORT
  111. bool
  112. default y
  113. config TRACE_IRQFLAGS_SUPPORT
  114. bool
  115. default y
  116. config RWSEM_GENERIC_SPINLOCK
  117. bool
  118. default y
  119. config RWSEM_XCHGADD_ALGORITHM
  120. bool
  121. config ARCH_HAS_ILOG2_U32
  122. bool
  123. config ARCH_HAS_ILOG2_U64
  124. bool
  125. config ARCH_HAS_CPUFREQ
  126. bool
  127. help
  128. Internal node to signify that the ARCH has CPUFREQ support
  129. and that the relevant menu configurations are displayed for
  130. it.
  131. config GENERIC_HWEIGHT
  132. bool
  133. default y
  134. config GENERIC_CALIBRATE_DELAY
  135. bool
  136. default y
  137. config ARCH_MAY_HAVE_PC_FDC
  138. bool
  139. config ZONE_DMA
  140. bool
  141. config NEED_DMA_MAP_STATE
  142. def_bool y
  143. config ARCH_HAS_DMA_SET_COHERENT_MASK
  144. bool
  145. config GENERIC_ISA_DMA
  146. bool
  147. config FIQ
  148. bool
  149. config NEED_RET_TO_USER
  150. bool
  151. config ARCH_MTD_XIP
  152. bool
  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. config ARM_PATCH_PHYS_VIRT
  161. bool "Patch physical to virtual translations at runtime" if EMBEDDED
  162. default y
  163. depends on !XIP_KERNEL && MMU
  164. depends on !ARCH_REALVIEW || !SPARSEMEM
  165. help
  166. Patch phys-to-virt and virt-to-phys translation functions at
  167. boot and module load time according to the position of the
  168. kernel in system memory.
  169. This can only be used with non-XIP MMU kernels where the base
  170. of physical memory is at a 16MB boundary.
  171. Only disable this option if you know that you do not require
  172. this feature (eg, building a kernel for a single machine) and
  173. you need to shrink the kernel to the minimal size.
  174. config NEED_MACH_GPIO_H
  175. bool
  176. help
  177. Select this when mach/gpio.h is required to provide special
  178. definitions for this platform. The need for mach/gpio.h should
  179. be avoided when possible.
  180. config NEED_MACH_IO_H
  181. bool
  182. help
  183. Select this when mach/io.h is required to provide special
  184. definitions for this platform. The need for mach/io.h should
  185. be avoided when possible.
  186. config NEED_MACH_MEMORY_H
  187. bool
  188. help
  189. Select this when mach/memory.h is required to provide special
  190. definitions for this platform. The need for mach/memory.h should
  191. be avoided when possible.
  192. config PHYS_OFFSET
  193. hex "Physical address of main memory" if MMU
  194. depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
  195. default DRAM_BASE if !MMU
  196. help
  197. Please provide the physical address corresponding to the
  198. location of main memory in your system.
  199. config GENERIC_BUG
  200. def_bool y
  201. depends on BUG
  202. source "init/Kconfig"
  203. source "kernel/Kconfig.freezer"
  204. menu "System Type"
  205. config MMU
  206. bool "MMU-based Paged Memory Management Support"
  207. default y
  208. help
  209. Select if you want MMU-based virtualised addressing space
  210. support by paged memory management. If unsure, say 'Y'.
  211. #
  212. # The "ARM system type" choice list is ordered alphabetically by option
  213. # text. Please add new entries in the option alphabetic order.
  214. #
  215. choice
  216. prompt "ARM system type"
  217. default ARCH_MULTIPLATFORM
  218. config ARCH_MULTIPLATFORM
  219. bool "Allow multiple platforms to be selected"
  220. depends on MMU
  221. select ARM_PATCH_PHYS_VIRT
  222. select AUTO_ZRELADDR
  223. select COMMON_CLK
  224. select MULTI_IRQ_HANDLER
  225. select SPARSE_IRQ
  226. select USE_OF
  227. config ARCH_INTEGRATOR
  228. bool "ARM Ltd. Integrator family"
  229. select ARCH_HAS_CPUFREQ
  230. select ARM_AMBA
  231. select COMMON_CLK
  232. select COMMON_CLK_VERSATILE
  233. select GENERIC_CLOCKEVENTS
  234. select HAVE_TCM
  235. select ICST
  236. select MULTI_IRQ_HANDLER
  237. select NEED_MACH_MEMORY_H
  238. select PLAT_VERSATILE
  239. select PLAT_VERSATILE_FPGA_IRQ
  240. select SPARSE_IRQ
  241. help
  242. Support for ARM's Integrator platform.
  243. config ARCH_REALVIEW
  244. bool "ARM Ltd. RealView family"
  245. select ARCH_WANT_OPTIONAL_GPIOLIB
  246. select ARM_AMBA
  247. select ARM_TIMER_SP804
  248. select COMMON_CLK
  249. select COMMON_CLK_VERSATILE
  250. select GENERIC_CLOCKEVENTS
  251. select GPIO_PL061 if GPIOLIB
  252. select ICST
  253. select NEED_MACH_MEMORY_H
  254. select PLAT_VERSATILE
  255. select PLAT_VERSATILE_CLCD
  256. help
  257. This enables support for ARM Ltd RealView boards.
  258. config ARCH_VERSATILE
  259. bool "ARM Ltd. Versatile family"
  260. select ARCH_WANT_OPTIONAL_GPIOLIB
  261. select ARM_AMBA
  262. select ARM_TIMER_SP804
  263. select ARM_VIC
  264. select CLKDEV_LOOKUP
  265. select GENERIC_CLOCKEVENTS
  266. select HAVE_MACH_CLKDEV
  267. select ICST
  268. select PLAT_VERSATILE
  269. select PLAT_VERSATILE_CLCD
  270. select PLAT_VERSATILE_CLOCK
  271. select PLAT_VERSATILE_FPGA_IRQ
  272. help
  273. This enables support for ARM Ltd Versatile board.
  274. config ARCH_AT91
  275. bool "Atmel AT91"
  276. select ARCH_REQUIRE_GPIOLIB
  277. select CLKDEV_LOOKUP
  278. select HAVE_CLK
  279. select IRQ_DOMAIN
  280. select NEED_MACH_GPIO_H
  281. select NEED_MACH_IO_H if PCCARD
  282. select PINCTRL
  283. select PINCTRL_AT91 if USE_OF
  284. help
  285. This enables support for systems based on Atmel
  286. AT91RM9200 and AT91SAM9* processors.
  287. config ARCH_BCM2835
  288. bool "Broadcom BCM2835 family"
  289. select ARCH_WANT_OPTIONAL_GPIOLIB
  290. select ARM_AMBA
  291. select ARM_ERRATA_411920
  292. select ARM_TIMER_SP804
  293. select CLKDEV_LOOKUP
  294. select COMMON_CLK
  295. select CPU_V6
  296. select GENERIC_CLOCKEVENTS
  297. select MULTI_IRQ_HANDLER
  298. select SPARSE_IRQ
  299. select USE_OF
  300. help
  301. This enables support for the Broadcom BCM2835 SoC. This SoC is
  302. use in the Raspberry Pi, and Roku 2 devices.
  303. config ARCH_CNS3XXX
  304. bool "Cavium Networks CNS3XXX family"
  305. select ARM_GIC
  306. select CPU_V6K
  307. select GENERIC_CLOCKEVENTS
  308. select MIGHT_HAVE_CACHE_L2X0
  309. select MIGHT_HAVE_PCI
  310. select PCI_DOMAINS if PCI
  311. help
  312. Support for Cavium Networks CNS3XXX platform.
  313. config ARCH_CLPS711X
  314. bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
  315. select ARCH_REQUIRE_GPIOLIB
  316. select ARCH_USES_GETTIMEOFFSET
  317. select CLKDEV_LOOKUP
  318. select COMMON_CLK
  319. select CPU_ARM720T
  320. select NEED_MACH_MEMORY_H
  321. help
  322. Support for Cirrus Logic 711x/721x/731x based boards.
  323. config ARCH_GEMINI
  324. bool "Cortina Systems Gemini"
  325. select ARCH_REQUIRE_GPIOLIB
  326. select ARCH_USES_GETTIMEOFFSET
  327. select CPU_FA526
  328. help
  329. Support for the Cortina Systems Gemini family SoCs
  330. config ARCH_SIRF
  331. bool "CSR SiRF"
  332. select ARCH_REQUIRE_GPIOLIB
  333. select COMMON_CLK
  334. select GENERIC_CLOCKEVENTS
  335. select GENERIC_IRQ_CHIP
  336. select MIGHT_HAVE_CACHE_L2X0
  337. select NO_IOPORT
  338. select PINCTRL
  339. select PINCTRL_SIRF
  340. select USE_OF
  341. help
  342. Support for CSR SiRFprimaII/Marco/Polo platforms
  343. config ARCH_EBSA110
  344. bool "EBSA-110"
  345. select ARCH_USES_GETTIMEOFFSET
  346. select CPU_SA110
  347. select ISA
  348. select NEED_MACH_IO_H
  349. select NEED_MACH_MEMORY_H
  350. select NO_IOPORT
  351. help
  352. This is an evaluation board for the StrongARM processor available
  353. from Digital. It has limited hardware on-board, including an
  354. Ethernet interface, two PCMCIA sockets, two serial ports and a
  355. parallel port.
  356. config ARCH_EP93XX
  357. bool "EP93xx-based"
  358. select ARCH_HAS_HOLES_MEMORYMODEL
  359. select ARCH_REQUIRE_GPIOLIB
  360. select ARCH_USES_GETTIMEOFFSET
  361. select ARM_AMBA
  362. select ARM_VIC
  363. select CLKDEV_LOOKUP
  364. select CPU_ARM920T
  365. select NEED_MACH_MEMORY_H
  366. help
  367. This enables support for the Cirrus EP93xx series of CPUs.
  368. config ARCH_FOOTBRIDGE
  369. bool "FootBridge"
  370. select CPU_SA110
  371. select FOOTBRIDGE
  372. select GENERIC_CLOCKEVENTS
  373. select HAVE_IDE
  374. select NEED_MACH_IO_H if !MMU
  375. select NEED_MACH_MEMORY_H
  376. help
  377. Support for systems based on the DC21285 companion chip
  378. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  379. config ARCH_MXC
  380. bool "Freescale MXC/iMX-based"
  381. select ARCH_REQUIRE_GPIOLIB
  382. select CLKDEV_LOOKUP
  383. select CLKSRC_MMIO
  384. select GENERIC_CLOCKEVENTS
  385. select GENERIC_IRQ_CHIP
  386. select MULTI_IRQ_HANDLER
  387. select SPARSE_IRQ
  388. select USE_OF
  389. help
  390. Support for Freescale MXC/iMX-based family of processors
  391. config ARCH_MXS
  392. bool "Freescale MXS-based"
  393. select ARCH_REQUIRE_GPIOLIB
  394. select CLKDEV_LOOKUP
  395. select CLKSRC_MMIO
  396. select COMMON_CLK
  397. select GENERIC_CLOCKEVENTS
  398. select HAVE_CLK_PREPARE
  399. select MULTI_IRQ_HANDLER
  400. select PINCTRL
  401. select SPARSE_IRQ
  402. select USE_OF
  403. help
  404. Support for Freescale MXS-based family of processors
  405. config ARCH_NETX
  406. bool "Hilscher NetX based"
  407. select ARM_VIC
  408. select CLKSRC_MMIO
  409. select CPU_ARM926T
  410. select GENERIC_CLOCKEVENTS
  411. help
  412. This enables support for systems based on the Hilscher NetX Soc
  413. config ARCH_H720X
  414. bool "Hynix HMS720x-based"
  415. select ARCH_USES_GETTIMEOFFSET
  416. select CPU_ARM720T
  417. select ISA_DMA_API
  418. help
  419. This enables support for systems based on the Hynix HMS720x
  420. config ARCH_IOP13XX
  421. bool "IOP13xx-based"
  422. depends on MMU
  423. select ARCH_SUPPORTS_MSI
  424. select CPU_XSC3
  425. select NEED_MACH_MEMORY_H
  426. select NEED_RET_TO_USER
  427. select PCI
  428. select PLAT_IOP
  429. select VMSPLIT_1G
  430. help
  431. Support for Intel's IOP13XX (XScale) family of processors.
  432. config ARCH_IOP32X
  433. bool "IOP32x-based"
  434. depends on MMU
  435. select ARCH_REQUIRE_GPIOLIB
  436. select CPU_XSCALE
  437. select NEED_MACH_GPIO_H
  438. select NEED_RET_TO_USER
  439. select PCI
  440. select PLAT_IOP
  441. help
  442. Support for Intel's 80219 and IOP32X (XScale) family of
  443. processors.
  444. config ARCH_IOP33X
  445. bool "IOP33x-based"
  446. depends on MMU
  447. select ARCH_REQUIRE_GPIOLIB
  448. select CPU_XSCALE
  449. select NEED_MACH_GPIO_H
  450. select NEED_RET_TO_USER
  451. select PCI
  452. select PLAT_IOP
  453. help
  454. Support for Intel's IOP33X (XScale) family of processors.
  455. config ARCH_IXP4XX
  456. bool "IXP4xx-based"
  457. depends on MMU
  458. select ARCH_HAS_DMA_SET_COHERENT_MASK
  459. select ARCH_REQUIRE_GPIOLIB
  460. select CLKSRC_MMIO
  461. select CPU_XSCALE
  462. select DMABOUNCE if PCI
  463. select GENERIC_CLOCKEVENTS
  464. select MIGHT_HAVE_PCI
  465. select NEED_MACH_IO_H
  466. help
  467. Support for Intel's IXP4XX (XScale) family of processors.
  468. config ARCH_DOVE
  469. bool "Marvell Dove"
  470. select ARCH_REQUIRE_GPIOLIB
  471. select CPU_V7
  472. select GENERIC_CLOCKEVENTS
  473. select MIGHT_HAVE_PCI
  474. select PLAT_ORION_LEGACY
  475. select USB_ARCH_HAS_EHCI
  476. help
  477. Support for the Marvell Dove SoC 88AP510
  478. config ARCH_KIRKWOOD
  479. bool "Marvell Kirkwood"
  480. select ARCH_REQUIRE_GPIOLIB
  481. select CPU_FEROCEON
  482. select GENERIC_CLOCKEVENTS
  483. select PCI
  484. select PCI_QUIRKS
  485. select PLAT_ORION_LEGACY
  486. help
  487. Support for the following Marvell Kirkwood series SoCs:
  488. 88F6180, 88F6192 and 88F6281.
  489. config ARCH_MV78XX0
  490. bool "Marvell MV78xx0"
  491. select ARCH_REQUIRE_GPIOLIB
  492. select CPU_FEROCEON
  493. select GENERIC_CLOCKEVENTS
  494. select PCI
  495. select PLAT_ORION_LEGACY
  496. help
  497. Support for the following Marvell MV78xx0 series SoCs:
  498. MV781x0, MV782x0.
  499. config ARCH_ORION5X
  500. bool "Marvell Orion"
  501. depends on MMU
  502. select ARCH_REQUIRE_GPIOLIB
  503. select CPU_FEROCEON
  504. select GENERIC_CLOCKEVENTS
  505. select PCI
  506. select PLAT_ORION_LEGACY
  507. help
  508. Support for the following Marvell Orion 5x series SoCs:
  509. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  510. Orion-2 (5281), Orion-1-90 (6183).
  511. config ARCH_MMP
  512. bool "Marvell PXA168/910/MMP2"
  513. depends on MMU
  514. select ARCH_REQUIRE_GPIOLIB
  515. select CLKDEV_LOOKUP
  516. select GENERIC_ALLOCATOR
  517. select GENERIC_CLOCKEVENTS
  518. select GPIO_PXA
  519. select IRQ_DOMAIN
  520. select NEED_MACH_GPIO_H
  521. select PINCTRL
  522. select PLAT_PXA
  523. select SPARSE_IRQ
  524. help
  525. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  526. config ARCH_KS8695
  527. bool "Micrel/Kendin KS8695"
  528. select ARCH_REQUIRE_GPIOLIB
  529. select CLKSRC_MMIO
  530. select CPU_ARM922T
  531. select GENERIC_CLOCKEVENTS
  532. select NEED_MACH_MEMORY_H
  533. help
  534. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  535. System-on-Chip devices.
  536. config ARCH_W90X900
  537. bool "Nuvoton W90X900 CPU"
  538. select ARCH_REQUIRE_GPIOLIB
  539. select CLKDEV_LOOKUP
  540. select CLKSRC_MMIO
  541. select CPU_ARM926T
  542. select GENERIC_CLOCKEVENTS
  543. help
  544. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  545. At present, the w90x900 has been renamed nuc900, regarding
  546. the ARM series product line, you can login the following
  547. link address to know more.
  548. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  549. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  550. config ARCH_LPC32XX
  551. bool "NXP LPC32XX"
  552. select ARCH_REQUIRE_GPIOLIB
  553. select ARM_AMBA
  554. select CLKDEV_LOOKUP
  555. select CLKSRC_MMIO
  556. select CPU_ARM926T
  557. select GENERIC_CLOCKEVENTS
  558. select HAVE_IDE
  559. select HAVE_PWM
  560. select USB_ARCH_HAS_OHCI
  561. select USE_OF
  562. help
  563. Support for the NXP LPC32XX family of processors
  564. config ARCH_TEGRA
  565. bool "NVIDIA Tegra"
  566. select ARCH_HAS_CPUFREQ
  567. select CLKDEV_LOOKUP
  568. select CLKSRC_MMIO
  569. select COMMON_CLK
  570. select GENERIC_CLOCKEVENTS
  571. select GENERIC_GPIO
  572. select HAVE_CLK
  573. select HAVE_SMP
  574. select MIGHT_HAVE_CACHE_L2X0
  575. select USE_OF
  576. help
  577. This enables support for NVIDIA Tegra based systems (Tegra APX,
  578. Tegra 6xx and Tegra 2 series).
  579. config ARCH_PXA
  580. bool "PXA2xx/PXA3xx-based"
  581. depends on MMU
  582. select ARCH_HAS_CPUFREQ
  583. select ARCH_MTD_XIP
  584. select ARCH_REQUIRE_GPIOLIB
  585. select ARM_CPU_SUSPEND if PM
  586. select AUTO_ZRELADDR
  587. select CLKDEV_LOOKUP
  588. select CLKSRC_MMIO
  589. select GENERIC_CLOCKEVENTS
  590. select GPIO_PXA
  591. select HAVE_IDE
  592. select MULTI_IRQ_HANDLER
  593. select NEED_MACH_GPIO_H
  594. select PLAT_PXA
  595. select SPARSE_IRQ
  596. help
  597. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  598. config ARCH_MSM
  599. bool "Qualcomm MSM"
  600. select ARCH_REQUIRE_GPIOLIB
  601. select CLKDEV_LOOKUP
  602. select GENERIC_CLOCKEVENTS
  603. select HAVE_CLK
  604. help
  605. Support for Qualcomm MSM/QSD based systems. This runs on the
  606. apps processor of the MSM/QSD and depends on a shared memory
  607. interface to the modem processor which runs the baseband
  608. stack and controls some vital subsystems
  609. (clock and power control, etc).
  610. config ARCH_SHMOBILE
  611. bool "Renesas SH-Mobile / R-Mobile"
  612. select CLKDEV_LOOKUP
  613. select GENERIC_CLOCKEVENTS
  614. select HAVE_CLK
  615. select HAVE_MACH_CLKDEV
  616. select HAVE_SMP
  617. select MIGHT_HAVE_CACHE_L2X0
  618. select MULTI_IRQ_HANDLER
  619. select NEED_MACH_MEMORY_H
  620. select NO_IOPORT
  621. select PM_GENERIC_DOMAINS if PM
  622. select SPARSE_IRQ
  623. help
  624. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  625. config ARCH_RPC
  626. bool "RiscPC"
  627. select ARCH_ACORN
  628. select ARCH_MAY_HAVE_PC_FDC
  629. select ARCH_SPARSEMEM_ENABLE
  630. select ARCH_USES_GETTIMEOFFSET
  631. select FIQ
  632. select HAVE_IDE
  633. select HAVE_PATA_PLATFORM
  634. select ISA_DMA_API
  635. select NEED_MACH_IO_H
  636. select NEED_MACH_MEMORY_H
  637. select NO_IOPORT
  638. help
  639. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  640. CD-ROM interface, serial and parallel port, and the floppy drive.
  641. config ARCH_SA1100
  642. bool "SA1100-based"
  643. select ARCH_HAS_CPUFREQ
  644. select ARCH_MTD_XIP
  645. select ARCH_REQUIRE_GPIOLIB
  646. select ARCH_SPARSEMEM_ENABLE
  647. select CLKDEV_LOOKUP
  648. select CLKSRC_MMIO
  649. select CPU_FREQ
  650. select CPU_SA1100
  651. select GENERIC_CLOCKEVENTS
  652. select HAVE_IDE
  653. select ISA
  654. select NEED_MACH_GPIO_H
  655. select NEED_MACH_MEMORY_H
  656. select SPARSE_IRQ
  657. help
  658. Support for StrongARM 11x0 based boards.
  659. config ARCH_S3C24XX
  660. bool "Samsung S3C24XX SoCs"
  661. select ARCH_HAS_CPUFREQ
  662. select ARCH_USES_GETTIMEOFFSET
  663. select CLKDEV_LOOKUP
  664. select GENERIC_GPIO
  665. select HAVE_CLK
  666. select HAVE_S3C2410_I2C if I2C
  667. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  668. select HAVE_S3C_RTC if RTC_CLASS
  669. select NEED_MACH_GPIO_H
  670. select NEED_MACH_IO_H
  671. help
  672. Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
  673. and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
  674. (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
  675. Samsung SMDK2410 development board (and derivatives).
  676. config ARCH_S3C64XX
  677. bool "Samsung S3C64XX"
  678. select ARCH_HAS_CPUFREQ
  679. select ARCH_REQUIRE_GPIOLIB
  680. select ARCH_USES_GETTIMEOFFSET
  681. select ARM_VIC
  682. select CLKDEV_LOOKUP
  683. select CPU_V6
  684. select HAVE_CLK
  685. select HAVE_S3C2410_I2C if I2C
  686. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  687. select HAVE_TCM
  688. select NEED_MACH_GPIO_H
  689. select NO_IOPORT
  690. select PLAT_SAMSUNG
  691. select S3C_DEV_NAND
  692. select S3C_GPIO_TRACK
  693. select SAMSUNG_CLKSRC
  694. select SAMSUNG_GPIOLIB_4BIT
  695. select SAMSUNG_IRQ_VIC_TIMER
  696. select USB_ARCH_HAS_OHCI
  697. help
  698. Samsung S3C64XX series based systems
  699. config ARCH_S5P64X0
  700. bool "Samsung S5P6440 S5P6450"
  701. select CLKDEV_LOOKUP
  702. select CLKSRC_MMIO
  703. select CPU_V6
  704. select GENERIC_CLOCKEVENTS
  705. select GENERIC_GPIO
  706. select HAVE_CLK
  707. select HAVE_S3C2410_I2C if I2C
  708. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  709. select HAVE_S3C_RTC if RTC_CLASS
  710. select NEED_MACH_GPIO_H
  711. help
  712. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  713. SMDK6450.
  714. config ARCH_S5PC100
  715. bool "Samsung S5PC100"
  716. select ARCH_USES_GETTIMEOFFSET
  717. select CLKDEV_LOOKUP
  718. select CPU_V7
  719. select GENERIC_GPIO
  720. select HAVE_CLK
  721. select HAVE_S3C2410_I2C if I2C
  722. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  723. select HAVE_S3C_RTC if RTC_CLASS
  724. select NEED_MACH_GPIO_H
  725. help
  726. Samsung S5PC100 series based systems
  727. config ARCH_S5PV210
  728. bool "Samsung S5PV210/S5PC110"
  729. select ARCH_HAS_CPUFREQ
  730. select ARCH_HAS_HOLES_MEMORYMODEL
  731. select ARCH_SPARSEMEM_ENABLE
  732. select CLKDEV_LOOKUP
  733. select CLKSRC_MMIO
  734. select CPU_V7
  735. select GENERIC_CLOCKEVENTS
  736. select GENERIC_GPIO
  737. select HAVE_CLK
  738. select HAVE_S3C2410_I2C if I2C
  739. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  740. select HAVE_S3C_RTC if RTC_CLASS
  741. select NEED_MACH_GPIO_H
  742. select NEED_MACH_MEMORY_H
  743. help
  744. Samsung S5PV210/S5PC110 series based systems
  745. config ARCH_EXYNOS
  746. bool "Samsung EXYNOS"
  747. select ARCH_HAS_CPUFREQ
  748. select ARCH_HAS_HOLES_MEMORYMODEL
  749. select ARCH_SPARSEMEM_ENABLE
  750. select CLKDEV_LOOKUP
  751. select CPU_V7
  752. select GENERIC_CLOCKEVENTS
  753. select GENERIC_GPIO
  754. select HAVE_CLK
  755. select HAVE_S3C2410_I2C if I2C
  756. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  757. select HAVE_S3C_RTC if RTC_CLASS
  758. select NEED_MACH_GPIO_H
  759. select NEED_MACH_MEMORY_H
  760. help
  761. Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
  762. config ARCH_SHARK
  763. bool "Shark"
  764. select ARCH_USES_GETTIMEOFFSET
  765. select CPU_SA110
  766. select ISA
  767. select ISA_DMA
  768. select NEED_MACH_MEMORY_H
  769. select PCI
  770. select ZONE_DMA
  771. help
  772. Support for the StrongARM based Digital DNARD machine, also known
  773. as "Shark" (<http://www.shark-linux.de/shark.html>).
  774. config ARCH_U300
  775. bool "ST-Ericsson U300 Series"
  776. depends on MMU
  777. select ARCH_REQUIRE_GPIOLIB
  778. select ARM_AMBA
  779. select ARM_PATCH_PHYS_VIRT
  780. select ARM_VIC
  781. select CLKDEV_LOOKUP
  782. select CLKSRC_MMIO
  783. select COMMON_CLK
  784. select CPU_ARM926T
  785. select GENERIC_CLOCKEVENTS
  786. select GENERIC_GPIO
  787. select HAVE_TCM
  788. select SPARSE_IRQ
  789. help
  790. Support for ST-Ericsson U300 series mobile platforms.
  791. config ARCH_U8500
  792. bool "ST-Ericsson U8500 Series"
  793. depends on MMU
  794. select ARCH_HAS_CPUFREQ
  795. select ARCH_REQUIRE_GPIOLIB
  796. select ARM_AMBA
  797. select CLKDEV_LOOKUP
  798. select CPU_V7
  799. select GENERIC_CLOCKEVENTS
  800. select HAVE_SMP
  801. select MIGHT_HAVE_CACHE_L2X0
  802. help
  803. Support for ST-Ericsson's Ux500 architecture
  804. config ARCH_NOMADIK
  805. bool "STMicroelectronics Nomadik"
  806. select ARCH_REQUIRE_GPIOLIB
  807. select ARM_AMBA
  808. select ARM_VIC
  809. select COMMON_CLK
  810. select CPU_ARM926T
  811. select GENERIC_CLOCKEVENTS
  812. select MIGHT_HAVE_CACHE_L2X0
  813. select PINCTRL
  814. select PINCTRL_STN8815
  815. help
  816. Support for the Nomadik platform by ST-Ericsson
  817. config PLAT_SPEAR
  818. bool "ST SPEAr"
  819. select ARCH_HAS_CPUFREQ
  820. select ARCH_REQUIRE_GPIOLIB
  821. select ARM_AMBA
  822. select CLKDEV_LOOKUP
  823. select CLKSRC_MMIO
  824. select COMMON_CLK
  825. select GENERIC_CLOCKEVENTS
  826. select HAVE_CLK
  827. help
  828. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  829. config ARCH_DAVINCI
  830. bool "TI DaVinci"
  831. select ARCH_HAS_HOLES_MEMORYMODEL
  832. select ARCH_REQUIRE_GPIOLIB
  833. select CLKDEV_LOOKUP
  834. select GENERIC_ALLOCATOR
  835. select GENERIC_CLOCKEVENTS
  836. select GENERIC_IRQ_CHIP
  837. select HAVE_IDE
  838. select NEED_MACH_GPIO_H
  839. select ZONE_DMA
  840. help
  841. Support for TI's DaVinci platform.
  842. config ARCH_OMAP
  843. bool "TI OMAP"
  844. depends on MMU
  845. select ARCH_HAS_CPUFREQ
  846. select ARCH_HAS_HOLES_MEMORYMODEL
  847. select ARCH_REQUIRE_GPIOLIB
  848. select CLKSRC_MMIO
  849. select GENERIC_CLOCKEVENTS
  850. select HAVE_CLK
  851. help
  852. Support for TI's OMAP platform (OMAP1/2/3/4).
  853. config ARCH_VT8500
  854. bool "VIA/WonderMedia 85xx"
  855. select ARCH_HAS_CPUFREQ
  856. select ARCH_REQUIRE_GPIOLIB
  857. select CLKDEV_LOOKUP
  858. select COMMON_CLK
  859. select CPU_ARM926T
  860. select GENERIC_CLOCKEVENTS
  861. select GENERIC_GPIO
  862. select HAVE_CLK
  863. select USE_OF
  864. help
  865. Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
  866. config ARCH_ZYNQ
  867. bool "Xilinx Zynq ARM Cortex A9 Platform"
  868. select ARM_AMBA
  869. select ARM_GIC
  870. select CLKDEV_LOOKUP
  871. select CPU_V7
  872. select GENERIC_CLOCKEVENTS
  873. select ICST
  874. select MIGHT_HAVE_CACHE_L2X0
  875. select USE_OF
  876. help
  877. Support for Xilinx Zynq ARM Cortex A9 Platform
  878. endchoice
  879. menu "Multiple platform selection"
  880. depends on ARCH_MULTIPLATFORM
  881. comment "CPU Core family selection"
  882. config ARCH_MULTI_V4
  883. bool "ARMv4 based platforms (FA526, StrongARM)"
  884. depends on !ARCH_MULTI_V6_V7
  885. select ARCH_MULTI_V4_V5
  886. config ARCH_MULTI_V4T
  887. bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
  888. depends on !ARCH_MULTI_V6_V7
  889. select ARCH_MULTI_V4_V5
  890. config ARCH_MULTI_V5
  891. bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
  892. depends on !ARCH_MULTI_V6_V7
  893. select ARCH_MULTI_V4_V5
  894. config ARCH_MULTI_V4_V5
  895. bool
  896. config ARCH_MULTI_V6
  897. bool "ARMv6 based platforms (ARM11, Scorpion, ...)"
  898. select ARCH_MULTI_V6_V7
  899. select CPU_V6
  900. config ARCH_MULTI_V7
  901. bool "ARMv7 based platforms (Cortex-A, PJ4, Krait)"
  902. default y
  903. select ARCH_MULTI_V6_V7
  904. select ARCH_VEXPRESS
  905. select CPU_V7
  906. config ARCH_MULTI_V6_V7
  907. bool
  908. config ARCH_MULTI_CPU_AUTO
  909. def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
  910. select ARCH_MULTI_V5
  911. endmenu
  912. #
  913. # This is sorted alphabetically by mach-* pathname. However, plat-*
  914. # Kconfigs may be included either alphabetically (according to the
  915. # plat- suffix) or along side the corresponding mach-* source.
  916. #
  917. source "arch/arm/mach-mvebu/Kconfig"
  918. source "arch/arm/mach-at91/Kconfig"
  919. source "arch/arm/mach-clps711x/Kconfig"
  920. source "arch/arm/mach-cns3xxx/Kconfig"
  921. source "arch/arm/mach-davinci/Kconfig"
  922. source "arch/arm/mach-dove/Kconfig"
  923. source "arch/arm/mach-ep93xx/Kconfig"
  924. source "arch/arm/mach-footbridge/Kconfig"
  925. source "arch/arm/mach-gemini/Kconfig"
  926. source "arch/arm/mach-h720x/Kconfig"
  927. source "arch/arm/mach-highbank/Kconfig"
  928. source "arch/arm/mach-integrator/Kconfig"
  929. source "arch/arm/mach-iop32x/Kconfig"
  930. source "arch/arm/mach-iop33x/Kconfig"
  931. source "arch/arm/mach-iop13xx/Kconfig"
  932. source "arch/arm/mach-ixp4xx/Kconfig"
  933. source "arch/arm/mach-kirkwood/Kconfig"
  934. source "arch/arm/mach-ks8695/Kconfig"
  935. source "arch/arm/mach-msm/Kconfig"
  936. source "arch/arm/mach-mv78xx0/Kconfig"
  937. source "arch/arm/plat-mxc/Kconfig"
  938. source "arch/arm/mach-mxs/Kconfig"
  939. source "arch/arm/mach-netx/Kconfig"
  940. source "arch/arm/mach-nomadik/Kconfig"
  941. source "arch/arm/plat-nomadik/Kconfig"
  942. source "arch/arm/plat-omap/Kconfig"
  943. source "arch/arm/mach-omap1/Kconfig"
  944. source "arch/arm/mach-omap2/Kconfig"
  945. source "arch/arm/mach-orion5x/Kconfig"
  946. source "arch/arm/mach-picoxcell/Kconfig"
  947. source "arch/arm/mach-pxa/Kconfig"
  948. source "arch/arm/plat-pxa/Kconfig"
  949. source "arch/arm/mach-mmp/Kconfig"
  950. source "arch/arm/mach-realview/Kconfig"
  951. source "arch/arm/mach-sa1100/Kconfig"
  952. source "arch/arm/plat-samsung/Kconfig"
  953. source "arch/arm/plat-s3c24xx/Kconfig"
  954. source "arch/arm/mach-socfpga/Kconfig"
  955. source "arch/arm/plat-spear/Kconfig"
  956. source "arch/arm/mach-s3c24xx/Kconfig"
  957. if ARCH_S3C24XX
  958. source "arch/arm/mach-s3c2412/Kconfig"
  959. source "arch/arm/mach-s3c2440/Kconfig"
  960. endif
  961. if ARCH_S3C64XX
  962. source "arch/arm/mach-s3c64xx/Kconfig"
  963. endif
  964. source "arch/arm/mach-s5p64x0/Kconfig"
  965. source "arch/arm/mach-s5pc100/Kconfig"
  966. source "arch/arm/mach-s5pv210/Kconfig"
  967. source "arch/arm/mach-exynos/Kconfig"
  968. source "arch/arm/mach-shmobile/Kconfig"
  969. source "arch/arm/mach-prima2/Kconfig"
  970. source "arch/arm/mach-tegra/Kconfig"
  971. source "arch/arm/mach-u300/Kconfig"
  972. source "arch/arm/mach-ux500/Kconfig"
  973. source "arch/arm/mach-versatile/Kconfig"
  974. source "arch/arm/mach-vexpress/Kconfig"
  975. source "arch/arm/plat-versatile/Kconfig"
  976. source "arch/arm/mach-w90x900/Kconfig"
  977. # Definitions to make life easier
  978. config ARCH_ACORN
  979. bool
  980. config PLAT_IOP
  981. bool
  982. select GENERIC_CLOCKEVENTS
  983. config PLAT_ORION
  984. bool
  985. select CLKSRC_MMIO
  986. select COMMON_CLK
  987. select GENERIC_IRQ_CHIP
  988. select IRQ_DOMAIN
  989. config PLAT_ORION_LEGACY
  990. bool
  991. select PLAT_ORION
  992. config PLAT_PXA
  993. bool
  994. config PLAT_VERSATILE
  995. bool
  996. config ARM_TIMER_SP804
  997. bool
  998. select CLKSRC_MMIO
  999. select HAVE_SCHED_CLOCK
  1000. source arch/arm/mm/Kconfig
  1001. config ARM_NR_BANKS
  1002. int
  1003. default 16 if ARCH_EP93XX
  1004. default 8
  1005. config IWMMXT
  1006. bool "Enable iWMMXt support"
  1007. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  1008. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  1009. help
  1010. Enable support for iWMMXt context switching at run time if
  1011. running on a CPU that supports it.
  1012. config XSCALE_PMU
  1013. bool
  1014. depends on CPU_XSCALE
  1015. default y
  1016. config MULTI_IRQ_HANDLER
  1017. bool
  1018. help
  1019. Allow each machine to specify it's own IRQ handler at run time.
  1020. if !MMU
  1021. source "arch/arm/Kconfig-nommu"
  1022. endif
  1023. config ARM_ERRATA_326103
  1024. bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
  1025. depends on CPU_V6
  1026. help
  1027. Executing a SWP instruction to read-only memory does not set bit 11
  1028. of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
  1029. treat the access as a read, preventing a COW from occurring and
  1030. causing the faulting task to livelock.
  1031. config ARM_ERRATA_411920
  1032. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  1033. depends on CPU_V6 || CPU_V6K
  1034. help
  1035. Invalidation of the Instruction Cache operation can
  1036. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  1037. It does not affect the MPCore. This option enables the ARM Ltd.
  1038. recommended workaround.
  1039. config ARM_ERRATA_430973
  1040. bool "ARM errata: Stale prediction on replaced interworking branch"
  1041. depends on CPU_V7
  1042. help
  1043. This option enables the workaround for the 430973 Cortex-A8
  1044. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  1045. interworking branch is replaced with another code sequence at the
  1046. same virtual address, whether due to self-modifying code or virtual
  1047. to physical address re-mapping, Cortex-A8 does not recover from the
  1048. stale interworking branch prediction. This results in Cortex-A8
  1049. executing the new code sequence in the incorrect ARM or Thumb state.
  1050. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  1051. and also flushes the branch target cache at every context switch.
  1052. Note that setting specific bits in the ACTLR register may not be
  1053. available in non-secure mode.
  1054. config ARM_ERRATA_458693
  1055. bool "ARM errata: Processor deadlock when a false hazard is created"
  1056. depends on CPU_V7
  1057. help
  1058. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  1059. erratum. For very specific sequences of memory operations, it is
  1060. possible for a hazard condition intended for a cache line to instead
  1061. be incorrectly associated with a different cache line. This false
  1062. hazard might then cause a processor deadlock. The workaround enables
  1063. the L1 caching of the NEON accesses and disables the PLD instruction
  1064. in the ACTLR register. Note that setting specific bits in the ACTLR
  1065. register may not be available in non-secure mode.
  1066. config ARM_ERRATA_460075
  1067. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  1068. depends on CPU_V7
  1069. help
  1070. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  1071. erratum. Any asynchronous access to the L2 cache may encounter a
  1072. situation in which recent store transactions to the L2 cache are lost
  1073. and overwritten with stale memory contents from external memory. The
  1074. workaround disables the write-allocate mode for the L2 cache via the
  1075. ACTLR register. Note that setting specific bits in the ACTLR register
  1076. may not be available in non-secure mode.
  1077. config ARM_ERRATA_742230
  1078. bool "ARM errata: DMB operation may be faulty"
  1079. depends on CPU_V7 && SMP
  1080. help
  1081. This option enables the workaround for the 742230 Cortex-A9
  1082. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  1083. between two write operations may not ensure the correct visibility
  1084. ordering of the two writes. This workaround sets a specific bit in
  1085. the diagnostic register of the Cortex-A9 which causes the DMB
  1086. instruction to behave as a DSB, ensuring the correct behaviour of
  1087. the two writes.
  1088. config ARM_ERRATA_742231
  1089. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  1090. depends on CPU_V7 && SMP
  1091. help
  1092. This option enables the workaround for the 742231 Cortex-A9
  1093. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  1094. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  1095. accessing some data located in the same cache line, may get corrupted
  1096. data due to bad handling of the address hazard when the line gets
  1097. replaced from one of the CPUs at the same time as another CPU is
  1098. accessing it. This workaround sets specific bits in the diagnostic
  1099. register of the Cortex-A9 which reduces the linefill issuing
  1100. capabilities of the processor.
  1101. config PL310_ERRATA_588369
  1102. bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
  1103. depends on CACHE_L2X0
  1104. help
  1105. The PL310 L2 cache controller implements three types of Clean &
  1106. Invalidate maintenance operations: by Physical Address
  1107. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  1108. They are architecturally defined to behave as the execution of a
  1109. clean operation followed immediately by an invalidate operation,
  1110. both performing to the same memory location. This functionality
  1111. is not correctly implemented in PL310 as clean lines are not
  1112. invalidated as a result of these operations.
  1113. config ARM_ERRATA_720789
  1114. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  1115. depends on CPU_V7
  1116. help
  1117. This option enables the workaround for the 720789 Cortex-A9 (prior to
  1118. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  1119. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  1120. As a consequence of this erratum, some TLB entries which should be
  1121. invalidated are not, resulting in an incoherency in the system page
  1122. tables. The workaround changes the TLB flushing routines to invalidate
  1123. entries regardless of the ASID.
  1124. config PL310_ERRATA_727915
  1125. bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
  1126. depends on CACHE_L2X0
  1127. help
  1128. PL310 implements the Clean & Invalidate by Way L2 cache maintenance
  1129. operation (offset 0x7FC). This operation runs in background so that
  1130. PL310 can handle normal accesses while it is in progress. Under very
  1131. rare circumstances, due to this erratum, write data can be lost when
  1132. PL310 treats a cacheable write transaction during a Clean &
  1133. Invalidate by Way operation.
  1134. config ARM_ERRATA_743622
  1135. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  1136. depends on CPU_V7
  1137. help
  1138. This option enables the workaround for the 743622 Cortex-A9
  1139. (r2p*) erratum. Under very rare conditions, a faulty
  1140. optimisation in the Cortex-A9 Store Buffer may lead to data
  1141. corruption. This workaround sets a specific bit in the diagnostic
  1142. register of the Cortex-A9 which disables the Store Buffer
  1143. optimisation, preventing the defect from occurring. This has no
  1144. visible impact on the overall performance or power consumption of the
  1145. processor.
  1146. config ARM_ERRATA_751472
  1147. bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
  1148. depends on CPU_V7
  1149. help
  1150. This option enables the workaround for the 751472 Cortex-A9 (prior
  1151. to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
  1152. completion of a following broadcasted operation if the second
  1153. operation is received by a CPU before the ICIALLUIS has completed,
  1154. potentially leading to corrupted entries in the cache or TLB.
  1155. config PL310_ERRATA_753970
  1156. bool "PL310 errata: cache sync operation may be faulty"
  1157. depends on CACHE_PL310
  1158. help
  1159. This option enables the workaround for the 753970 PL310 (r3p0) erratum.
  1160. Under some condition the effect of cache sync operation on
  1161. the store buffer still remains when the operation completes.
  1162. This means that the store buffer is always asked to drain and
  1163. this prevents it from merging any further writes. The workaround
  1164. is to replace the normal offset of cache sync operation (0x730)
  1165. by another offset targeting an unmapped PL310 register 0x740.
  1166. This has the same effect as the cache sync operation: store buffer
  1167. drain and waiting for all buffers empty.
  1168. config ARM_ERRATA_754322
  1169. bool "ARM errata: possible faulty MMU translations following an ASID switch"
  1170. depends on CPU_V7
  1171. help
  1172. This option enables the workaround for the 754322 Cortex-A9 (r2p*,
  1173. r3p*) erratum. A speculative memory access may cause a page table walk
  1174. which starts prior to an ASID switch but completes afterwards. This
  1175. can populate the micro-TLB with a stale entry which may be hit with
  1176. the new ASID. This workaround places two dsb instructions in the mm
  1177. switching code so that no page table walks can cross the ASID switch.
  1178. config ARM_ERRATA_754327
  1179. bool "ARM errata: no automatic Store Buffer drain"
  1180. depends on CPU_V7 && SMP
  1181. help
  1182. This option enables the workaround for the 754327 Cortex-A9 (prior to
  1183. r2p0) erratum. The Store Buffer does not have any automatic draining
  1184. mechanism and therefore a livelock may occur if an external agent
  1185. continuously polls a memory location waiting to observe an update.
  1186. This workaround defines cpu_relax() as smp_mb(), preventing correctly
  1187. written polling loops from denying visibility of updates to memory.
  1188. config ARM_ERRATA_364296
  1189. bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
  1190. depends on CPU_V6 && !SMP
  1191. help
  1192. This options enables the workaround for the 364296 ARM1136
  1193. r0p2 erratum (possible cache data corruption with
  1194. hit-under-miss enabled). It sets the undocumented bit 31 in
  1195. the auxiliary control register and the FI bit in the control
  1196. register, thus disabling hit-under-miss without putting the
  1197. processor into full low interrupt latency mode. ARM11MPCore
  1198. is not affected.
  1199. config ARM_ERRATA_764369
  1200. bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
  1201. depends on CPU_V7 && SMP
  1202. help
  1203. This option enables the workaround for erratum 764369
  1204. affecting Cortex-A9 MPCore with two or more processors (all
  1205. current revisions). Under certain timing circumstances, a data
  1206. cache line maintenance operation by MVA targeting an Inner
  1207. Shareable memory region may fail to proceed up to either the
  1208. Point of Coherency or to the Point of Unification of the
  1209. system. This workaround adds a DSB instruction before the
  1210. relevant cache maintenance functions and sets a specific bit
  1211. in the diagnostic control register of the SCU.
  1212. config PL310_ERRATA_769419
  1213. bool "PL310 errata: no automatic Store Buffer drain"
  1214. depends on CACHE_L2X0
  1215. help
  1216. On revisions of the PL310 prior to r3p2, the Store Buffer does
  1217. not automatically drain. This can cause normal, non-cacheable
  1218. writes to be retained when the memory system is idle, leading
  1219. to suboptimal I/O performance for drivers using coherent DMA.
  1220. This option adds a write barrier to the cpu_idle loop so that,
  1221. on systems with an outer cache, the store buffer is drained
  1222. explicitly.
  1223. config ARM_ERRATA_775420
  1224. bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
  1225. depends on CPU_V7
  1226. help
  1227. This option enables the workaround for the 775420 Cortex-A9 (r2p2,
  1228. r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
  1229. operation aborts with MMU exception, it might cause the processor
  1230. to deadlock. This workaround puts DSB before executing ISB if
  1231. an abort may occur on cache maintenance.
  1232. endmenu
  1233. source "arch/arm/common/Kconfig"
  1234. menu "Bus support"
  1235. config ARM_AMBA
  1236. bool
  1237. config ISA
  1238. bool
  1239. help
  1240. Find out whether you have ISA slots on your motherboard. ISA is the
  1241. name of a bus system, i.e. the way the CPU talks to the other stuff
  1242. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1243. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1244. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1245. # Select ISA DMA controller support
  1246. config ISA_DMA
  1247. bool
  1248. select ISA_DMA_API
  1249. # Select ISA DMA interface
  1250. config ISA_DMA_API
  1251. bool
  1252. config PCI
  1253. bool "PCI support" if MIGHT_HAVE_PCI
  1254. help
  1255. Find out whether you have a PCI motherboard. PCI is the name of a
  1256. bus system, i.e. the way the CPU talks to the other stuff inside
  1257. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1258. VESA. If you have PCI, say Y, otherwise N.
  1259. config PCI_DOMAINS
  1260. bool
  1261. depends on PCI
  1262. config PCI_NANOENGINE
  1263. bool "BSE nanoEngine PCI support"
  1264. depends on SA1100_NANOENGINE
  1265. help
  1266. Enable PCI on the BSE nanoEngine board.
  1267. config PCI_SYSCALL
  1268. def_bool PCI
  1269. # Select the host bridge type
  1270. config PCI_HOST_VIA82C505
  1271. bool
  1272. depends on PCI && ARCH_SHARK
  1273. default y
  1274. config PCI_HOST_ITE8152
  1275. bool
  1276. depends on PCI && MACH_ARMCORE
  1277. default y
  1278. select DMABOUNCE
  1279. source "drivers/pci/Kconfig"
  1280. source "drivers/pcmcia/Kconfig"
  1281. endmenu
  1282. menu "Kernel Features"
  1283. config HAVE_SMP
  1284. bool
  1285. help
  1286. This option should be selected by machines which have an SMP-
  1287. capable CPU.
  1288. The only effect of this option is to make the SMP-related
  1289. options available to the user for configuration.
  1290. config SMP
  1291. bool "Symmetric Multi-Processing"
  1292. depends on CPU_V6K || CPU_V7
  1293. depends on GENERIC_CLOCKEVENTS
  1294. depends on HAVE_SMP
  1295. depends on MMU
  1296. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1297. select USE_GENERIC_SMP_HELPERS
  1298. help
  1299. This enables support for systems with more than one CPU. If you have
  1300. a system with only one CPU, like most personal computers, say N. If
  1301. you have a system with more than one CPU, say Y.
  1302. If you say N here, the kernel will run on single and multiprocessor
  1303. machines, but will use only one CPU of a multiprocessor machine. If
  1304. you say Y here, the kernel will run on many, but not all, single
  1305. processor machines. On a single processor machine, the kernel will
  1306. run faster if you say N here.
  1307. See also <file:Documentation/x86/i386/IO-APIC.txt>,
  1308. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1309. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1310. If you don't know what to do here, say N.
  1311. config SMP_ON_UP
  1312. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1313. depends on EXPERIMENTAL
  1314. depends on SMP && !XIP_KERNEL
  1315. default y
  1316. help
  1317. SMP kernels contain instructions which fail on non-SMP processors.
  1318. Enabling this option allows the kernel to modify itself to make
  1319. these instructions safe. Disabling it allows about 1K of space
  1320. savings.
  1321. If you don't know what to do here, say Y.
  1322. config ARM_CPU_TOPOLOGY
  1323. bool "Support cpu topology definition"
  1324. depends on SMP && CPU_V7
  1325. default y
  1326. help
  1327. Support ARM cpu topology definition. The MPIDR register defines
  1328. affinity between processors which is then used to describe the cpu
  1329. topology of an ARM System.
  1330. config SCHED_MC
  1331. bool "Multi-core scheduler support"
  1332. depends on ARM_CPU_TOPOLOGY
  1333. help
  1334. Multi-core scheduler support improves the CPU scheduler's decision
  1335. making when dealing with multi-core CPU chips at a cost of slightly
  1336. increased overhead in some places. If unsure say N here.
  1337. config SCHED_SMT
  1338. bool "SMT scheduler support"
  1339. depends on ARM_CPU_TOPOLOGY
  1340. help
  1341. Improves the CPU scheduler's decision making when dealing with
  1342. MultiThreading at a cost of slightly increased overhead in some
  1343. places. If unsure say N here.
  1344. config HAVE_ARM_SCU
  1345. bool
  1346. help
  1347. This option enables support for the ARM system coherency unit
  1348. config ARM_ARCH_TIMER
  1349. bool "Architected timer support"
  1350. depends on CPU_V7
  1351. help
  1352. This option enables support for the ARM architected timer
  1353. config HAVE_ARM_TWD
  1354. bool
  1355. depends on SMP
  1356. help
  1357. This options enables support for the ARM timer and watchdog unit
  1358. choice
  1359. prompt "Memory split"
  1360. default VMSPLIT_3G
  1361. help
  1362. Select the desired split between kernel and user memory.
  1363. If you are not absolutely sure what you are doing, leave this
  1364. option alone!
  1365. config VMSPLIT_3G
  1366. bool "3G/1G user/kernel split"
  1367. config VMSPLIT_2G
  1368. bool "2G/2G user/kernel split"
  1369. config VMSPLIT_1G
  1370. bool "1G/3G user/kernel split"
  1371. endchoice
  1372. config PAGE_OFFSET
  1373. hex
  1374. default 0x40000000 if VMSPLIT_1G
  1375. default 0x80000000 if VMSPLIT_2G
  1376. default 0xC0000000
  1377. config NR_CPUS
  1378. int "Maximum number of CPUs (2-32)"
  1379. range 2 32
  1380. depends on SMP
  1381. default "4"
  1382. config HOTPLUG_CPU
  1383. bool "Support for hot-pluggable CPUs"
  1384. depends on SMP && HOTPLUG
  1385. help
  1386. Say Y here to experiment with turning CPUs off and on. CPUs
  1387. can be controlled through /sys/devices/system/cpu.
  1388. config LOCAL_TIMERS
  1389. bool "Use local timer interrupts"
  1390. depends on SMP
  1391. default y
  1392. select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
  1393. help
  1394. Enable support for local timers on SMP platforms, rather then the
  1395. legacy IPI broadcast method. Local timers allows the system
  1396. accounting to be spread across the timer interval, preventing a
  1397. "thundering herd" at every timer tick.
  1398. config ARCH_NR_GPIO
  1399. int
  1400. default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
  1401. default 355 if ARCH_U8500
  1402. default 264 if MACH_H4700
  1403. default 512 if SOC_OMAP5
  1404. default 288 if ARCH_VT8500
  1405. default 0
  1406. help
  1407. Maximum number of GPIOs in the system.
  1408. If unsure, leave the default value.
  1409. source kernel/Kconfig.preempt
  1410. config HZ
  1411. int
  1412. default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
  1413. ARCH_S5PV210 || ARCH_EXYNOS4
  1414. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1415. default AT91_TIMER_HZ if ARCH_AT91
  1416. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1417. default 100
  1418. config THUMB2_KERNEL
  1419. bool "Compile the kernel in Thumb-2 mode"
  1420. depends on CPU_V7 && !CPU_V6 && !CPU_V6K
  1421. select AEABI
  1422. select ARM_ASM_UNIFIED
  1423. select ARM_UNWIND
  1424. help
  1425. By enabling this option, the kernel will be compiled in
  1426. Thumb-2 mode. A compiler/assembler that understand the unified
  1427. ARM-Thumb syntax is needed.
  1428. If unsure, say N.
  1429. config THUMB2_AVOID_R_ARM_THM_JUMP11
  1430. bool "Work around buggy Thumb-2 short branch relocations in gas"
  1431. depends on THUMB2_KERNEL && MODULES
  1432. default y
  1433. help
  1434. Various binutils versions can resolve Thumb-2 branches to
  1435. locally-defined, preemptible global symbols as short-range "b.n"
  1436. branch instructions.
  1437. This is a problem, because there's no guarantee the final
  1438. destination of the symbol, or any candidate locations for a
  1439. trampoline, are within range of the branch. For this reason, the
  1440. kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
  1441. relocation in modules at all, and it makes little sense to add
  1442. support.
  1443. The symptom is that the kernel fails with an "unsupported
  1444. relocation" error when loading some modules.
  1445. Until fixed tools are available, passing
  1446. -fno-optimize-sibling-calls to gcc should prevent gcc generating
  1447. code which hits this problem, at the cost of a bit of extra runtime
  1448. stack usage in some cases.
  1449. The problem is described in more detail at:
  1450. https://bugs.launchpad.net/binutils-linaro/+bug/725126
  1451. Only Thumb-2 kernels are affected.
  1452. Unless you are sure your tools don't have this problem, say Y.
  1453. config ARM_ASM_UNIFIED
  1454. bool
  1455. config AEABI
  1456. bool "Use the ARM EABI to compile the kernel"
  1457. help
  1458. This option allows for the kernel to be compiled using the latest
  1459. ARM ABI (aka EABI). This is only useful if you are using a user
  1460. space environment that is also compiled with EABI.
  1461. Since there are major incompatibilities between the legacy ABI and
  1462. EABI, especially with regard to structure member alignment, this
  1463. option also changes the kernel syscall calling convention to
  1464. disambiguate both ABIs and allow for backward compatibility support
  1465. (selected with CONFIG_OABI_COMPAT).
  1466. To use this you need GCC version 4.0.0 or later.
  1467. config OABI_COMPAT
  1468. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1469. depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
  1470. default y
  1471. help
  1472. This option preserves the old syscall interface along with the
  1473. new (ARM EABI) one. It also provides a compatibility layer to
  1474. intercept syscalls that have structure arguments which layout
  1475. in memory differs between the legacy ABI and the new ARM EABI
  1476. (only for non "thumb" binaries). This option adds a tiny
  1477. overhead to all syscalls and produces a slightly larger kernel.
  1478. If you know you'll be using only pure EABI user space then you
  1479. can say N here. If this option is not selected and you attempt
  1480. to execute a legacy ABI binary then the result will be
  1481. UNPREDICTABLE (in fact it can be predicted that it won't work
  1482. at all). If in doubt say Y.
  1483. config ARCH_HAS_HOLES_MEMORYMODEL
  1484. bool
  1485. config ARCH_SPARSEMEM_ENABLE
  1486. bool
  1487. config ARCH_SPARSEMEM_DEFAULT
  1488. def_bool ARCH_SPARSEMEM_ENABLE
  1489. config ARCH_SELECT_MEMORY_MODEL
  1490. def_bool ARCH_SPARSEMEM_ENABLE
  1491. config HAVE_ARCH_PFN_VALID
  1492. def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
  1493. config HIGHMEM
  1494. bool "High Memory Support"
  1495. depends on MMU
  1496. help
  1497. The address space of ARM processors is only 4 Gigabytes large
  1498. and it has to accommodate user address space, kernel address
  1499. space as well as some memory mapped IO. That means that, if you
  1500. have a large amount of physical memory and/or IO, not all of the
  1501. memory can be "permanently mapped" by the kernel. The physical
  1502. memory that is not permanently mapped is called "high memory".
  1503. Depending on the selected kernel/user memory split, minimum
  1504. vmalloc space and actual amount of RAM, you may not need this
  1505. option which should result in a slightly faster kernel.
  1506. If unsure, say n.
  1507. config HIGHPTE
  1508. bool "Allocate 2nd-level pagetables from highmem"
  1509. depends on HIGHMEM
  1510. config HW_PERF_EVENTS
  1511. bool "Enable hardware performance counter support for perf events"
  1512. depends on PERF_EVENTS
  1513. default y
  1514. help
  1515. Enable hardware performance counter support for perf events. If
  1516. disabled, perf events will use software events only.
  1517. source "mm/Kconfig"
  1518. config FORCE_MAX_ZONEORDER
  1519. int "Maximum zone order" if ARCH_SHMOBILE
  1520. range 11 64 if ARCH_SHMOBILE
  1521. default "12" if SOC_AM33XX
  1522. default "9" if SA1111
  1523. default "11"
  1524. help
  1525. The kernel memory allocator divides physically contiguous memory
  1526. blocks into "zones", where each zone is a power of two number of
  1527. pages. This option selects the largest power of two that the kernel
  1528. keeps in the memory allocator. If you need to allocate very large
  1529. blocks of physically contiguous memory, then you may need to
  1530. increase this value.
  1531. This config option is actually maximum order plus one. For example,
  1532. a value of 11 means that the largest free memory block is 2^10 pages.
  1533. config ALIGNMENT_TRAP
  1534. bool
  1535. depends on CPU_CP15_MMU
  1536. default y if !ARCH_EBSA110
  1537. select HAVE_PROC_CPU if PROC_FS
  1538. help
  1539. ARM processors cannot fetch/store information which is not
  1540. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1541. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1542. fetch/store instructions will be emulated in software if you say
  1543. here, which has a severe performance impact. This is necessary for
  1544. correct operation of some network protocols. With an IP-only
  1545. configuration it is safe to say N, otherwise say Y.
  1546. config UACCESS_WITH_MEMCPY
  1547. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
  1548. depends on MMU
  1549. default y if CPU_FEROCEON
  1550. help
  1551. Implement faster copy_to_user and clear_user methods for CPU
  1552. cores where a 8-word STM instruction give significantly higher
  1553. memory write throughput than a sequence of individual 32bit stores.
  1554. A possible side effect is a slight increase in scheduling latency
  1555. between threads sharing the same address space if they invoke
  1556. such copy operations with large buffers.
  1557. However, if the CPU data cache is using a write-allocate mode,
  1558. this option is unlikely to provide any performance gain.
  1559. config SECCOMP
  1560. bool
  1561. prompt "Enable seccomp to safely compute untrusted bytecode"
  1562. ---help---
  1563. This kernel feature is useful for number crunching applications
  1564. that may need to compute untrusted bytecode during their
  1565. execution. By using pipes or other transports made available to
  1566. the process as file descriptors supporting the read/write
  1567. syscalls, it's possible to isolate those applications in
  1568. their own address space using seccomp. Once seccomp is
  1569. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1570. and the task is only allowed to execute a few safe syscalls
  1571. defined by each seccomp mode.
  1572. config CC_STACKPROTECTOR
  1573. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1574. depends on EXPERIMENTAL
  1575. help
  1576. This option turns on the -fstack-protector GCC feature. This
  1577. feature puts, at the beginning of functions, a canary value on
  1578. the stack just before the return address, and validates
  1579. the value just before actually returning. Stack based buffer
  1580. overflows (that need to overwrite this return address) now also
  1581. overwrite the canary, which gets detected and the attack is then
  1582. neutralized via a kernel panic.
  1583. This feature requires gcc version 4.2 or above.
  1584. config XEN_DOM0
  1585. def_bool y
  1586. depends on XEN
  1587. config XEN
  1588. bool "Xen guest support on ARM (EXPERIMENTAL)"
  1589. depends on EXPERIMENTAL && ARM && OF
  1590. depends on CPU_V7 && !CPU_V6
  1591. help
  1592. Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
  1593. endmenu
  1594. menu "Boot options"
  1595. config USE_OF
  1596. bool "Flattened Device Tree support"
  1597. select IRQ_DOMAIN
  1598. select OF
  1599. select OF_EARLY_FLATTREE
  1600. help
  1601. Include support for flattened device tree machine descriptions.
  1602. config ATAGS
  1603. bool "Support for the traditional ATAGS boot data passing" if USE_OF
  1604. default y
  1605. help
  1606. This is the traditional way of passing data to the kernel at boot
  1607. time. If you are solely relying on the flattened device tree (or
  1608. the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
  1609. to remove ATAGS support from your kernel binary. If unsure,
  1610. leave this to y.
  1611. config DEPRECATED_PARAM_STRUCT
  1612. bool "Provide old way to pass kernel parameters"
  1613. depends on ATAGS
  1614. help
  1615. This was deprecated in 2001 and announced to live on for 5 years.
  1616. Some old boot loaders still use this way.
  1617. # Compressed boot loader in ROM. Yes, we really want to ask about
  1618. # TEXT and BSS so we preserve their values in the config files.
  1619. config ZBOOT_ROM_TEXT
  1620. hex "Compressed ROM boot loader base address"
  1621. default "0"
  1622. help
  1623. The physical address at which the ROM-able zImage is to be
  1624. placed in the target. Platforms which normally make use of
  1625. ROM-able zImage formats normally set this to a suitable
  1626. value in their defconfig file.
  1627. If ZBOOT_ROM is not enabled, this has no effect.
  1628. config ZBOOT_ROM_BSS
  1629. hex "Compressed ROM boot loader BSS address"
  1630. default "0"
  1631. help
  1632. The base address of an area of read/write memory in the target
  1633. for the ROM-able zImage which must be available while the
  1634. decompressor is running. It must be large enough to hold the
  1635. entire decompressed kernel plus an additional 128 KiB.
  1636. Platforms which normally make use of ROM-able zImage formats
  1637. normally set this to a suitable value in their defconfig file.
  1638. If ZBOOT_ROM is not enabled, this has no effect.
  1639. config ZBOOT_ROM
  1640. bool "Compressed boot loader in ROM/flash"
  1641. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1642. help
  1643. Say Y here if you intend to execute your compressed kernel image
  1644. (zImage) directly from ROM or flash. If unsure, say N.
  1645. choice
  1646. prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
  1647. depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
  1648. default ZBOOT_ROM_NONE
  1649. help
  1650. Include experimental SD/MMC loading code in the ROM-able zImage.
  1651. With this enabled it is possible to write the ROM-able zImage
  1652. kernel image to an MMC or SD card and boot the kernel straight
  1653. from the reset vector. At reset the processor Mask ROM will load
  1654. the first part of the ROM-able zImage which in turn loads the
  1655. rest the kernel image to RAM.
  1656. config ZBOOT_ROM_NONE
  1657. bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
  1658. help
  1659. Do not load image from SD or MMC
  1660. config ZBOOT_ROM_MMCIF
  1661. bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
  1662. help
  1663. Load image from MMCIF hardware block.
  1664. config ZBOOT_ROM_SH_MOBILE_SDHI
  1665. bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
  1666. help
  1667. Load image from SDHI hardware block
  1668. endchoice
  1669. config ARM_APPENDED_DTB
  1670. bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
  1671. depends on OF && !ZBOOT_ROM && EXPERIMENTAL
  1672. help
  1673. With this option, the boot code will look for a device tree binary
  1674. (DTB) appended to zImage
  1675. (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
  1676. This is meant as a backward compatibility convenience for those
  1677. systems with a bootloader that can't be upgraded to accommodate
  1678. the documented boot protocol using a device tree.
  1679. Beware that there is very little in terms of protection against
  1680. this option being confused by leftover garbage in memory that might
  1681. look like a DTB header after a reboot if no actual DTB is appended
  1682. to zImage. Do not leave this option active in a production kernel
  1683. if you don't intend to always append a DTB. Proper passing of the
  1684. location into r2 of a bootloader provided DTB is always preferable
  1685. to this option.
  1686. config ARM_ATAG_DTB_COMPAT
  1687. bool "Supplement the appended DTB with traditional ATAG information"
  1688. depends on ARM_APPENDED_DTB
  1689. help
  1690. Some old bootloaders can't be updated to a DTB capable one, yet
  1691. they provide ATAGs with memory configuration, the ramdisk address,
  1692. the kernel cmdline string, etc. Such information is dynamically
  1693. provided by the bootloader and can't always be stored in a static
  1694. DTB. To allow a device tree enabled kernel to be used with such
  1695. bootloaders, this option allows zImage to extract the information
  1696. from the ATAG list and store it at run time into the appended DTB.
  1697. choice
  1698. prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
  1699. default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
  1700. config ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
  1701. bool "Use bootloader kernel arguments if available"
  1702. help
  1703. Uses the command-line options passed by the boot loader instead of
  1704. the device tree bootargs property. If the boot loader doesn't provide
  1705. any, the device tree bootargs property will be used.
  1706. config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
  1707. bool "Extend with bootloader kernel arguments"
  1708. help
  1709. The command-line arguments provided by the boot loader will be
  1710. appended to the the device tree bootargs property.
  1711. endchoice
  1712. config CMDLINE
  1713. string "Default kernel command string"
  1714. default ""
  1715. help
  1716. On some architectures (EBSA110 and CATS), there is currently no way
  1717. for the boot loader to pass arguments to the kernel. For these
  1718. architectures, you should supply some command-line options at build
  1719. time by entering them here. As a minimum, you should specify the
  1720. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1721. choice
  1722. prompt "Kernel command line type" if CMDLINE != ""
  1723. default CMDLINE_FROM_BOOTLOADER
  1724. depends on ATAGS
  1725. config CMDLINE_FROM_BOOTLOADER
  1726. bool "Use bootloader kernel arguments if available"
  1727. help
  1728. Uses the command-line options passed by the boot loader. If
  1729. the boot loader doesn't provide any, the default kernel command
  1730. string provided in CMDLINE will be used.
  1731. config CMDLINE_EXTEND
  1732. bool "Extend bootloader kernel arguments"
  1733. help
  1734. The command-line arguments provided by the boot loader will be
  1735. appended to the default kernel command string.
  1736. config CMDLINE_FORCE
  1737. bool "Always use the default kernel command string"
  1738. help
  1739. Always use the default kernel command string, even if the boot
  1740. loader passes other arguments to the kernel.
  1741. This is useful if you cannot or don't want to change the
  1742. command-line options your boot loader passes to the kernel.
  1743. endchoice
  1744. config XIP_KERNEL
  1745. bool "Kernel Execute-In-Place from ROM"
  1746. depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
  1747. help
  1748. Execute-In-Place allows the kernel to run from non-volatile storage
  1749. directly addressable by the CPU, such as NOR flash. This saves RAM
  1750. space since the text section of the kernel is not loaded from flash
  1751. to RAM. Read-write sections, such as the data section and stack,
  1752. are still copied to RAM. The XIP kernel is not compressed since
  1753. it has to run directly from flash, so it will take more space to
  1754. store it. The flash address used to link the kernel object files,
  1755. and for storing it, is configuration dependent. Therefore, if you
  1756. say Y here, you must know the proper physical address where to
  1757. store the kernel image depending on your own flash memory usage.
  1758. Also note that the make target becomes "make xipImage" rather than
  1759. "make zImage" or "make Image". The final kernel binary to put in
  1760. ROM memory will be arch/arm/boot/xipImage.
  1761. If unsure, say N.
  1762. config XIP_PHYS_ADDR
  1763. hex "XIP Kernel Physical Location"
  1764. depends on XIP_KERNEL
  1765. default "0x00080000"
  1766. help
  1767. This is the physical address in your flash memory the kernel will
  1768. be linked for and stored to. This address is dependent on your
  1769. own flash usage.
  1770. config KEXEC
  1771. bool "Kexec system call (EXPERIMENTAL)"
  1772. depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
  1773. help
  1774. kexec is a system call that implements the ability to shutdown your
  1775. current kernel, and to start another kernel. It is like a reboot
  1776. but it is independent of the system firmware. And like a reboot
  1777. you can start any kernel with it, not just Linux.
  1778. It is an ongoing process to be certain the hardware in a machine
  1779. is properly shutdown, so do not be surprised if this code does not
  1780. initially work for you. It may help to enable device hotplugging
  1781. support.
  1782. config ATAGS_PROC
  1783. bool "Export atags in procfs"
  1784. depends on ATAGS && KEXEC
  1785. default y
  1786. help
  1787. Should the atags used to boot the kernel be exported in an "atags"
  1788. file in procfs. Useful with kexec.
  1789. config CRASH_DUMP
  1790. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1791. depends on EXPERIMENTAL
  1792. help
  1793. Generate crash dump after being started by kexec. This should
  1794. be normally only set in special crash dump kernels which are
  1795. loaded in the main kernel with kexec-tools into a specially
  1796. reserved region and then later executed after a crash by
  1797. kdump/kexec. The crash dump kernel must be compiled to a
  1798. memory address not used by the main kernel
  1799. For more details see Documentation/kdump/kdump.txt
  1800. config AUTO_ZRELADDR
  1801. bool "Auto calculation of the decompressed kernel image address"
  1802. depends on !ZBOOT_ROM && !ARCH_U300
  1803. help
  1804. ZRELADDR is the physical address where the decompressed kernel
  1805. image will be placed. If AUTO_ZRELADDR is selected, the address
  1806. will be determined at run-time by masking the current IP with
  1807. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1808. from start of memory.
  1809. endmenu
  1810. menu "CPU Power Management"
  1811. if ARCH_HAS_CPUFREQ
  1812. source "drivers/cpufreq/Kconfig"
  1813. config CPU_FREQ_IMX
  1814. tristate "CPUfreq driver for i.MX CPUs"
  1815. depends on ARCH_MXC && CPU_FREQ
  1816. select CPU_FREQ_TABLE
  1817. help
  1818. This enables the CPUfreq driver for i.MX CPUs.
  1819. config CPU_FREQ_SA1100
  1820. bool
  1821. config CPU_FREQ_SA1110
  1822. bool
  1823. config CPU_FREQ_INTEGRATOR
  1824. tristate "CPUfreq driver for ARM Integrator CPUs"
  1825. depends on ARCH_INTEGRATOR && CPU_FREQ
  1826. default y
  1827. help
  1828. This enables the CPUfreq driver for ARM Integrator CPUs.
  1829. For details, take a look at <file:Documentation/cpu-freq>.
  1830. If in doubt, say Y.
  1831. config CPU_FREQ_PXA
  1832. bool
  1833. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1834. default y
  1835. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1836. select CPU_FREQ_TABLE
  1837. config CPU_FREQ_S3C
  1838. bool
  1839. help
  1840. Internal configuration node for common cpufreq on Samsung SoC
  1841. config CPU_FREQ_S3C24XX
  1842. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1843. depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
  1844. select CPU_FREQ_S3C
  1845. help
  1846. This enables the CPUfreq driver for the Samsung S3C24XX family
  1847. of CPUs.
  1848. For details, take a look at <file:Documentation/cpu-freq>.
  1849. If in doubt, say N.
  1850. config CPU_FREQ_S3C24XX_PLL
  1851. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1852. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1853. help
  1854. Compile in support for changing the PLL frequency from the
  1855. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1856. after a frequency change, so by default it is not enabled.
  1857. This also means that the PLL tables for the selected CPU(s) will
  1858. be built which may increase the size of the kernel image.
  1859. config CPU_FREQ_S3C24XX_DEBUG
  1860. bool "Debug CPUfreq Samsung driver core"
  1861. depends on CPU_FREQ_S3C24XX
  1862. help
  1863. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1864. config CPU_FREQ_S3C24XX_IODEBUG
  1865. bool "Debug CPUfreq Samsung driver IO timing"
  1866. depends on CPU_FREQ_S3C24XX
  1867. help
  1868. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1869. config CPU_FREQ_S3C24XX_DEBUGFS
  1870. bool "Export debugfs for CPUFreq"
  1871. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1872. help
  1873. Export status information via debugfs.
  1874. endif
  1875. source "drivers/cpuidle/Kconfig"
  1876. endmenu
  1877. menu "Floating point emulation"
  1878. comment "At least one emulation must be selected"
  1879. config FPE_NWFPE
  1880. bool "NWFPE math emulation"
  1881. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1882. ---help---
  1883. Say Y to include the NWFPE floating point emulator in the kernel.
  1884. This is necessary to run most binaries. Linux does not currently
  1885. support floating point hardware so you need to say Y here even if
  1886. your machine has an FPA or floating point co-processor podule.
  1887. You may say N here if you are going to load the Acorn FPEmulator
  1888. early in the bootup.
  1889. config FPE_NWFPE_XP
  1890. bool "Support extended precision"
  1891. depends on FPE_NWFPE
  1892. help
  1893. Say Y to include 80-bit support in the kernel floating-point
  1894. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1895. Note that gcc does not generate 80-bit operations by default,
  1896. so in most cases this option only enlarges the size of the
  1897. floating point emulator without any good reason.
  1898. You almost surely want to say N here.
  1899. config FPE_FASTFPE
  1900. bool "FastFPE math emulation (EXPERIMENTAL)"
  1901. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1902. ---help---
  1903. Say Y here to include the FAST floating point emulator in the kernel.
  1904. This is an experimental much faster emulator which now also has full
  1905. precision for the mantissa. It does not support any exceptions.
  1906. It is very simple, and approximately 3-6 times faster than NWFPE.
  1907. It should be sufficient for most programs. It may be not suitable
  1908. for scientific calculations, but you have to check this for yourself.
  1909. If you do not feel you need a faster FP emulation you should better
  1910. choose NWFPE.
  1911. config VFP
  1912. bool "VFP-format floating point maths"
  1913. depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1914. help
  1915. Say Y to include VFP support code in the kernel. This is needed
  1916. if your hardware includes a VFP unit.
  1917. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1918. release notes and additional status information.
  1919. Say N if your target does not have VFP hardware.
  1920. config VFPv3
  1921. bool
  1922. depends on VFP
  1923. default y if CPU_V7
  1924. config NEON
  1925. bool "Advanced SIMD (NEON) Extension support"
  1926. depends on VFPv3 && CPU_V7
  1927. help
  1928. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1929. Extension.
  1930. endmenu
  1931. menu "Userspace binary formats"
  1932. source "fs/Kconfig.binfmt"
  1933. config ARTHUR
  1934. tristate "RISC OS personality"
  1935. depends on !AEABI
  1936. help
  1937. Say Y here to include the kernel code necessary if you want to run
  1938. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1939. experimental; if this sounds frightening, say N and sleep in peace.
  1940. You can also say M here to compile this support as a module (which
  1941. will be called arthur).
  1942. endmenu
  1943. menu "Power management options"
  1944. source "kernel/power/Kconfig"
  1945. config ARCH_SUSPEND_POSSIBLE
  1946. depends on !ARCH_S5PC100
  1947. depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
  1948. CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
  1949. def_bool y
  1950. config ARM_CPU_SUSPEND
  1951. def_bool PM_SLEEP
  1952. endmenu
  1953. source "net/Kconfig"
  1954. source "drivers/Kconfig"
  1955. source "fs/Kconfig"
  1956. source "arch/arm/Kconfig.debug"
  1957. source "security/Kconfig"
  1958. source "crypto/Kconfig"
  1959. source "lib/Kconfig"