Kconfig 65 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960196119621963196419651966196719681969197019711972197319741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050205120522053205420552056205720582059206020612062206320642065206620672068206920702071207220732074207520762077207820792080208120822083208420852086208720882089209020912092209320942095209620972098209921002101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170217121722173217421752176217721782179218021812182218321842185218621872188218921902191219221932194219521962197219821992200220122022203220422052206220722082209221022112212221322142215221622172218221922202221222222232224222522262227222822292230223122322233223422352236223722382239224022412242224322442245224622472248224922502251225222532254225522562257225822592260226122622263226422652266226722682269227022712272227322742275227622772278227922802281228222832284228522862287228822892290229122922293229422952296
  1. config ARM
  2. bool
  3. default y
  4. select HAVE_AOUT
  5. select HAVE_DMA_API_DEBUG
  6. select HAVE_IDE if PCI || ISA || PCMCIA
  7. select HAVE_MEMBLOCK
  8. select RTC_LIB
  9. select SYS_SUPPORTS_APM_EMULATION
  10. select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI)
  11. select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
  12. select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
  13. select HAVE_ARCH_KGDB
  14. select HAVE_KPROBES if !XIP_KERNEL
  15. select HAVE_KRETPROBES if (HAVE_KPROBES)
  16. select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
  17. select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
  18. select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
  19. select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
  20. select ARCH_BINFMT_ELF_RANDOMIZE_PIE
  21. select HAVE_GENERIC_DMA_COHERENT
  22. select HAVE_KERNEL_GZIP
  23. select HAVE_KERNEL_LZO
  24. select HAVE_KERNEL_LZMA
  25. select HAVE_KERNEL_XZ
  26. select HAVE_IRQ_WORK
  27. select HAVE_PERF_EVENTS
  28. select PERF_USE_VMALLOC
  29. select HAVE_REGS_AND_STACK_ACCESS_API
  30. select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
  31. select HAVE_C_RECORDMCOUNT
  32. select HAVE_GENERIC_HARDIRQS
  33. select GENERIC_IRQ_SHOW
  34. select CPU_PM if (SUSPEND || CPU_IDLE)
  35. select GENERIC_PCI_IOMAP
  36. select HAVE_BPF_JIT if NET
  37. help
  38. The ARM series is a line of low-power-consumption RISC chip designs
  39. licensed by ARM Ltd and targeted at embedded applications and
  40. handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
  41. manufactured, but legacy ARM-based PC hardware remains popular in
  42. Europe. There is an ARM Linux project with a web page at
  43. <http://www.arm.linux.org.uk/>.
  44. config ARM_HAS_SG_CHAIN
  45. bool
  46. config HAVE_PWM
  47. bool
  48. config MIGHT_HAVE_PCI
  49. bool
  50. config SYS_SUPPORTS_APM_EMULATION
  51. bool
  52. config GENERIC_GPIO
  53. bool
  54. config ARCH_USES_GETTIMEOFFSET
  55. bool
  56. default n
  57. config GENERIC_CLOCKEVENTS
  58. bool
  59. config GENERIC_CLOCKEVENTS_BROADCAST
  60. bool
  61. depends on GENERIC_CLOCKEVENTS
  62. default y if SMP
  63. config KTIME_SCALAR
  64. bool
  65. default y
  66. config HAVE_TCM
  67. bool
  68. select GENERIC_ALLOCATOR
  69. config HAVE_PROC_CPU
  70. bool
  71. config NO_IOPORT
  72. bool
  73. config EISA
  74. bool
  75. ---help---
  76. The Extended Industry Standard Architecture (EISA) bus was
  77. developed as an open alternative to the IBM MicroChannel bus.
  78. The EISA bus provided some of the features of the IBM MicroChannel
  79. bus while maintaining backward compatibility with cards made for
  80. the older ISA bus. The EISA bus saw limited use between 1988 and
  81. 1995 when it was made obsolete by the PCI bus.
  82. Say Y here if you are building a kernel for an EISA-based machine.
  83. Otherwise, say N.
  84. config SBUS
  85. bool
  86. config MCA
  87. bool
  88. help
  89. MicroChannel Architecture is found in some IBM PS/2 machines and
  90. laptops. It is a bus system similar to PCI or ISA. See
  91. <file:Documentation/mca.txt> (and especially the web page given
  92. there) before attempting to build an MCA bus kernel.
  93. config STACKTRACE_SUPPORT
  94. bool
  95. default y
  96. config HAVE_LATENCYTOP_SUPPORT
  97. bool
  98. depends on !SMP
  99. default y
  100. config LOCKDEP_SUPPORT
  101. bool
  102. default y
  103. config TRACE_IRQFLAGS_SUPPORT
  104. bool
  105. default y
  106. config HARDIRQS_SW_RESEND
  107. bool
  108. default y
  109. config GENERIC_IRQ_PROBE
  110. bool
  111. default y
  112. config GENERIC_LOCKBREAK
  113. bool
  114. default y
  115. depends on SMP && PREEMPT
  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 ARCH_HAS_CPU_IDLE_WAIT
  132. def_bool y
  133. config GENERIC_HWEIGHT
  134. bool
  135. default y
  136. config GENERIC_CALIBRATE_DELAY
  137. bool
  138. default y
  139. config ARCH_MAY_HAVE_PC_FDC
  140. bool
  141. config ZONE_DMA
  142. bool
  143. config NEED_DMA_MAP_STATE
  144. def_bool y
  145. config ARCH_HAS_DMA_SET_COHERENT_MASK
  146. bool
  147. config GENERIC_ISA_DMA
  148. bool
  149. config FIQ
  150. bool
  151. config NEED_RET_TO_USER
  152. bool
  153. config ARCH_MTD_XIP
  154. bool
  155. config VECTORS_BASE
  156. hex
  157. default 0xffff0000 if MMU || CPU_HIGH_VECTOR
  158. default DRAM_BASE if REMAP_VECTORS_TO_RAM
  159. default 0x00000000
  160. help
  161. The base address of exception vectors.
  162. config ARM_PATCH_PHYS_VIRT
  163. bool "Patch physical to virtual translations at runtime" if EMBEDDED
  164. default y
  165. depends on !XIP_KERNEL && MMU
  166. depends on !ARCH_REALVIEW || !SPARSEMEM
  167. help
  168. Patch phys-to-virt and virt-to-phys translation functions at
  169. boot and module load time according to the position of the
  170. kernel in system memory.
  171. This can only be used with non-XIP MMU kernels where the base
  172. of physical memory is at a 16MB boundary.
  173. Only disable this option if you know that you do not require
  174. this feature (eg, building a kernel for a single machine) and
  175. you need to shrink the kernel to the minimal size.
  176. config NEED_MACH_IO_H
  177. bool
  178. help
  179. Select this when mach/io.h is required to provide special
  180. definitions for this platform. The need for mach/io.h should
  181. be avoided when possible.
  182. config NEED_MACH_MEMORY_H
  183. bool
  184. help
  185. Select this when mach/memory.h is required to provide special
  186. definitions for this platform. The need for mach/memory.h should
  187. be avoided when possible.
  188. config PHYS_OFFSET
  189. hex "Physical address of main memory" if MMU
  190. depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
  191. default DRAM_BASE if !MMU
  192. help
  193. Please provide the physical address corresponding to the
  194. location of main memory in your system.
  195. config GENERIC_BUG
  196. def_bool y
  197. depends on BUG
  198. source "init/Kconfig"
  199. source "kernel/Kconfig.freezer"
  200. menu "System Type"
  201. config MMU
  202. bool "MMU-based Paged Memory Management Support"
  203. default y
  204. help
  205. Select if you want MMU-based virtualised addressing space
  206. support by paged memory management. If unsure, say 'Y'.
  207. #
  208. # The "ARM system type" choice list is ordered alphabetically by option
  209. # text. Please add new entries in the option alphabetic order.
  210. #
  211. choice
  212. prompt "ARM system type"
  213. default ARCH_VERSATILE
  214. config ARCH_INTEGRATOR
  215. bool "ARM Ltd. Integrator family"
  216. select ARM_AMBA
  217. select ARCH_HAS_CPUFREQ
  218. select CLKDEV_LOOKUP
  219. select HAVE_MACH_CLKDEV
  220. select HAVE_TCM
  221. select ICST
  222. select GENERIC_CLOCKEVENTS
  223. select PLAT_VERSATILE
  224. select PLAT_VERSATILE_FPGA_IRQ
  225. select NEED_MACH_IO_H
  226. select NEED_MACH_MEMORY_H
  227. select SPARSE_IRQ
  228. help
  229. Support for ARM's Integrator platform.
  230. config ARCH_REALVIEW
  231. bool "ARM Ltd. RealView family"
  232. select ARM_AMBA
  233. select CLKDEV_LOOKUP
  234. select HAVE_MACH_CLKDEV
  235. select ICST
  236. select GENERIC_CLOCKEVENTS
  237. select ARCH_WANT_OPTIONAL_GPIOLIB
  238. select PLAT_VERSATILE
  239. select PLAT_VERSATILE_CLCD
  240. select ARM_TIMER_SP804
  241. select GPIO_PL061 if GPIOLIB
  242. select NEED_MACH_MEMORY_H
  243. help
  244. This enables support for ARM Ltd RealView boards.
  245. config ARCH_VERSATILE
  246. bool "ARM Ltd. Versatile family"
  247. select ARM_AMBA
  248. select ARM_VIC
  249. select CLKDEV_LOOKUP
  250. select HAVE_MACH_CLKDEV
  251. select ICST
  252. select GENERIC_CLOCKEVENTS
  253. select ARCH_WANT_OPTIONAL_GPIOLIB
  254. select PLAT_VERSATILE
  255. select PLAT_VERSATILE_CLCD
  256. select PLAT_VERSATILE_FPGA_IRQ
  257. select ARM_TIMER_SP804
  258. help
  259. This enables support for ARM Ltd Versatile board.
  260. config ARCH_VEXPRESS
  261. bool "ARM Ltd. Versatile Express family"
  262. select ARCH_WANT_OPTIONAL_GPIOLIB
  263. select ARM_AMBA
  264. select ARM_TIMER_SP804
  265. select CLKDEV_LOOKUP
  266. select HAVE_MACH_CLKDEV
  267. select GENERIC_CLOCKEVENTS
  268. select HAVE_CLK
  269. select HAVE_PATA_PLATFORM
  270. select ICST
  271. select NO_IOPORT
  272. select PLAT_VERSATILE
  273. select PLAT_VERSATILE_CLCD
  274. help
  275. This enables support for the ARM Ltd Versatile Express boards.
  276. config ARCH_AT91
  277. bool "Atmel AT91"
  278. select ARCH_REQUIRE_GPIOLIB
  279. select HAVE_CLK
  280. select CLKDEV_LOOKUP
  281. select IRQ_DOMAIN
  282. help
  283. This enables support for systems based on the Atmel AT91RM9200,
  284. AT91SAM9 processors.
  285. config ARCH_BCMRING
  286. bool "Broadcom BCMRING"
  287. depends on MMU
  288. select CPU_V6
  289. select ARM_AMBA
  290. select ARM_TIMER_SP804
  291. select CLKDEV_LOOKUP
  292. select GENERIC_CLOCKEVENTS
  293. select ARCH_WANT_OPTIONAL_GPIOLIB
  294. help
  295. Support for Broadcom's BCMRing platform.
  296. config ARCH_HIGHBANK
  297. bool "Calxeda Highbank-based"
  298. select ARCH_WANT_OPTIONAL_GPIOLIB
  299. select ARM_AMBA
  300. select ARM_GIC
  301. select ARM_TIMER_SP804
  302. select CACHE_L2X0
  303. select CLKDEV_LOOKUP
  304. select CPU_V7
  305. select GENERIC_CLOCKEVENTS
  306. select HAVE_ARM_SCU
  307. select HAVE_SMP
  308. select SPARSE_IRQ
  309. select USE_OF
  310. help
  311. Support for the Calxeda Highbank SoC based boards.
  312. config ARCH_CLPS711X
  313. bool "Cirrus Logic CLPS711x/EP721x-based"
  314. select CPU_ARM720T
  315. select ARCH_USES_GETTIMEOFFSET
  316. select NEED_MACH_MEMORY_H
  317. help
  318. Support for Cirrus Logic 711x/721x based boards.
  319. config ARCH_CNS3XXX
  320. bool "Cavium Networks CNS3XXX family"
  321. select CPU_V6K
  322. select GENERIC_CLOCKEVENTS
  323. select ARM_GIC
  324. select MIGHT_HAVE_CACHE_L2X0
  325. select MIGHT_HAVE_PCI
  326. select PCI_DOMAINS if PCI
  327. help
  328. Support for Cavium Networks CNS3XXX platform.
  329. config ARCH_GEMINI
  330. bool "Cortina Systems Gemini"
  331. select CPU_FA526
  332. select ARCH_REQUIRE_GPIOLIB
  333. select ARCH_USES_GETTIMEOFFSET
  334. help
  335. Support for the Cortina Systems Gemini family SoCs
  336. config ARCH_PRIMA2
  337. bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
  338. select CPU_V7
  339. select NO_IOPORT
  340. select GENERIC_CLOCKEVENTS
  341. select CLKDEV_LOOKUP
  342. select GENERIC_IRQ_CHIP
  343. select MIGHT_HAVE_CACHE_L2X0
  344. select USE_OF
  345. select ZONE_DMA
  346. help
  347. Support for CSR SiRFSoC ARM Cortex A9 Platform
  348. config ARCH_EBSA110
  349. bool "EBSA-110"
  350. select CPU_SA110
  351. select ISA
  352. select NO_IOPORT
  353. select ARCH_USES_GETTIMEOFFSET
  354. select NEED_MACH_IO_H
  355. select NEED_MACH_MEMORY_H
  356. help
  357. This is an evaluation board for the StrongARM processor available
  358. from Digital. It has limited hardware on-board, including an
  359. Ethernet interface, two PCMCIA sockets, two serial ports and a
  360. parallel port.
  361. config ARCH_EP93XX
  362. bool "EP93xx-based"
  363. select CPU_ARM920T
  364. select ARM_AMBA
  365. select ARM_VIC
  366. select CLKDEV_LOOKUP
  367. select ARCH_REQUIRE_GPIOLIB
  368. select ARCH_HAS_HOLES_MEMORYMODEL
  369. select ARCH_USES_GETTIMEOFFSET
  370. select NEED_MACH_MEMORY_H
  371. help
  372. This enables support for the Cirrus EP93xx series of CPUs.
  373. config ARCH_FOOTBRIDGE
  374. bool "FootBridge"
  375. select CPU_SA110
  376. select FOOTBRIDGE
  377. select GENERIC_CLOCKEVENTS
  378. select HAVE_IDE
  379. select NEED_MACH_IO_H
  380. select NEED_MACH_MEMORY_H
  381. help
  382. Support for systems based on the DC21285 companion chip
  383. ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
  384. config ARCH_MXC
  385. bool "Freescale MXC/iMX-based"
  386. select GENERIC_CLOCKEVENTS
  387. select ARCH_REQUIRE_GPIOLIB
  388. select CLKDEV_LOOKUP
  389. select CLKSRC_MMIO
  390. select GENERIC_IRQ_CHIP
  391. select MULTI_IRQ_HANDLER
  392. help
  393. Support for Freescale MXC/iMX-based family of processors
  394. config ARCH_MXS
  395. bool "Freescale MXS-based"
  396. select GENERIC_CLOCKEVENTS
  397. select ARCH_REQUIRE_GPIOLIB
  398. select CLKDEV_LOOKUP
  399. select CLKSRC_MMIO
  400. select HAVE_CLK_PREPARE
  401. help
  402. Support for Freescale MXS-based family of processors
  403. config ARCH_NETX
  404. bool "Hilscher NetX based"
  405. select CLKSRC_MMIO
  406. select CPU_ARM926T
  407. select ARM_VIC
  408. select GENERIC_CLOCKEVENTS
  409. help
  410. This enables support for systems based on the Hilscher NetX Soc
  411. config ARCH_H720X
  412. bool "Hynix HMS720x-based"
  413. select CPU_ARM720T
  414. select ISA_DMA_API
  415. select ARCH_USES_GETTIMEOFFSET
  416. help
  417. This enables support for systems based on the Hynix HMS720x
  418. config ARCH_IOP13XX
  419. bool "IOP13xx-based"
  420. depends on MMU
  421. select CPU_XSC3
  422. select PLAT_IOP
  423. select PCI
  424. select ARCH_SUPPORTS_MSI
  425. select VMSPLIT_1G
  426. select NEED_MACH_IO_H
  427. select NEED_MACH_MEMORY_H
  428. select NEED_RET_TO_USER
  429. help
  430. Support for Intel's IOP13XX (XScale) family of processors.
  431. config ARCH_IOP32X
  432. bool "IOP32x-based"
  433. depends on MMU
  434. select CPU_XSCALE
  435. select NEED_MACH_IO_H
  436. select NEED_RET_TO_USER
  437. select PLAT_IOP
  438. select PCI
  439. select ARCH_REQUIRE_GPIOLIB
  440. help
  441. Support for Intel's 80219 and IOP32X (XScale) family of
  442. processors.
  443. config ARCH_IOP33X
  444. bool "IOP33x-based"
  445. depends on MMU
  446. select CPU_XSCALE
  447. select NEED_MACH_IO_H
  448. select NEED_RET_TO_USER
  449. select PLAT_IOP
  450. select PCI
  451. select ARCH_REQUIRE_GPIOLIB
  452. help
  453. Support for Intel's IOP33X (XScale) family of processors.
  454. config ARCH_IXP23XX
  455. bool "IXP23XX-based"
  456. depends on MMU
  457. select CPU_XSC3
  458. select PCI
  459. select ARCH_USES_GETTIMEOFFSET
  460. select NEED_MACH_IO_H
  461. select NEED_MACH_MEMORY_H
  462. help
  463. Support for Intel's IXP23xx (XScale) family of processors.
  464. config ARCH_IXP2000
  465. bool "IXP2400/2800-based"
  466. depends on MMU
  467. select CPU_XSCALE
  468. select PCI
  469. select ARCH_USES_GETTIMEOFFSET
  470. select NEED_MACH_IO_H
  471. select NEED_MACH_MEMORY_H
  472. help
  473. Support for Intel's IXP2400/2800 (XScale) family of processors.
  474. config ARCH_IXP4XX
  475. bool "IXP4xx-based"
  476. depends on MMU
  477. select ARCH_HAS_DMA_SET_COHERENT_MASK
  478. select CLKSRC_MMIO
  479. select CPU_XSCALE
  480. select GENERIC_GPIO
  481. select GENERIC_CLOCKEVENTS
  482. select MIGHT_HAVE_PCI
  483. select NEED_MACH_IO_H
  484. select DMABOUNCE if PCI
  485. help
  486. Support for Intel's IXP4XX (XScale) family of processors.
  487. config ARCH_DOVE
  488. bool "Marvell Dove"
  489. select CPU_V7
  490. select PCI
  491. select ARCH_REQUIRE_GPIOLIB
  492. select GENERIC_CLOCKEVENTS
  493. select NEED_MACH_IO_H
  494. select PLAT_ORION
  495. help
  496. Support for the Marvell Dove SoC 88AP510
  497. config ARCH_KIRKWOOD
  498. bool "Marvell Kirkwood"
  499. select CPU_FEROCEON
  500. select PCI
  501. select ARCH_REQUIRE_GPIOLIB
  502. select GENERIC_CLOCKEVENTS
  503. select NEED_MACH_IO_H
  504. select PLAT_ORION
  505. help
  506. Support for the following Marvell Kirkwood series SoCs:
  507. 88F6180, 88F6192 and 88F6281.
  508. config ARCH_LPC32XX
  509. bool "NXP LPC32XX"
  510. select CLKSRC_MMIO
  511. select CPU_ARM926T
  512. select ARCH_REQUIRE_GPIOLIB
  513. select HAVE_IDE
  514. select ARM_AMBA
  515. select USB_ARCH_HAS_OHCI
  516. select CLKDEV_LOOKUP
  517. select GENERIC_CLOCKEVENTS
  518. help
  519. Support for the NXP LPC32XX family of processors
  520. config ARCH_MV78XX0
  521. bool "Marvell MV78xx0"
  522. select CPU_FEROCEON
  523. select PCI
  524. select ARCH_REQUIRE_GPIOLIB
  525. select GENERIC_CLOCKEVENTS
  526. select NEED_MACH_IO_H
  527. select PLAT_ORION
  528. help
  529. Support for the following Marvell MV78xx0 series SoCs:
  530. MV781x0, MV782x0.
  531. config ARCH_ORION5X
  532. bool "Marvell Orion"
  533. depends on MMU
  534. select CPU_FEROCEON
  535. select PCI
  536. select ARCH_REQUIRE_GPIOLIB
  537. select GENERIC_CLOCKEVENTS
  538. select PLAT_ORION
  539. help
  540. Support for the following Marvell Orion 5x series SoCs:
  541. Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
  542. Orion-2 (5281), Orion-1-90 (6183).
  543. config ARCH_MMP
  544. bool "Marvell PXA168/910/MMP2"
  545. depends on MMU
  546. select ARCH_REQUIRE_GPIOLIB
  547. select CLKDEV_LOOKUP
  548. select GENERIC_CLOCKEVENTS
  549. select GPIO_PXA
  550. select TICK_ONESHOT
  551. select PLAT_PXA
  552. select SPARSE_IRQ
  553. select GENERIC_ALLOCATOR
  554. help
  555. Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
  556. config ARCH_KS8695
  557. bool "Micrel/Kendin KS8695"
  558. select CPU_ARM922T
  559. select ARCH_REQUIRE_GPIOLIB
  560. select ARCH_USES_GETTIMEOFFSET
  561. select NEED_MACH_MEMORY_H
  562. help
  563. Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
  564. System-on-Chip devices.
  565. config ARCH_W90X900
  566. bool "Nuvoton W90X900 CPU"
  567. select CPU_ARM926T
  568. select ARCH_REQUIRE_GPIOLIB
  569. select CLKDEV_LOOKUP
  570. select CLKSRC_MMIO
  571. select GENERIC_CLOCKEVENTS
  572. help
  573. Support for Nuvoton (Winbond logic dept.) ARM9 processor,
  574. At present, the w90x900 has been renamed nuc900, regarding
  575. the ARM series product line, you can login the following
  576. link address to know more.
  577. <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
  578. ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
  579. config ARCH_TEGRA
  580. bool "NVIDIA Tegra"
  581. select CLKDEV_LOOKUP
  582. select CLKSRC_MMIO
  583. select GENERIC_CLOCKEVENTS
  584. select GENERIC_GPIO
  585. select HAVE_CLK
  586. select HAVE_SMP
  587. select MIGHT_HAVE_CACHE_L2X0
  588. select NEED_MACH_IO_H if PCI
  589. select ARCH_HAS_CPUFREQ
  590. help
  591. This enables support for NVIDIA Tegra based systems (Tegra APX,
  592. Tegra 6xx and Tegra 2 series).
  593. config ARCH_PICOXCELL
  594. bool "Picochip picoXcell"
  595. select ARCH_REQUIRE_GPIOLIB
  596. select ARM_PATCH_PHYS_VIRT
  597. select ARM_VIC
  598. select CPU_V6K
  599. select DW_APB_TIMER
  600. select GENERIC_CLOCKEVENTS
  601. select GENERIC_GPIO
  602. select HAVE_TCM
  603. select NO_IOPORT
  604. select SPARSE_IRQ
  605. select USE_OF
  606. help
  607. This enables support for systems based on the Picochip picoXcell
  608. family of Femtocell devices. The picoxcell support requires device tree
  609. for all boards.
  610. config ARCH_PNX4008
  611. bool "Philips Nexperia PNX4008 Mobile"
  612. select CPU_ARM926T
  613. select CLKDEV_LOOKUP
  614. select ARCH_USES_GETTIMEOFFSET
  615. help
  616. This enables support for Philips PNX4008 mobile platform.
  617. config ARCH_PXA
  618. bool "PXA2xx/PXA3xx-based"
  619. depends on MMU
  620. select ARCH_MTD_XIP
  621. select ARCH_HAS_CPUFREQ
  622. select CLKDEV_LOOKUP
  623. select CLKSRC_MMIO
  624. select ARCH_REQUIRE_GPIOLIB
  625. select GENERIC_CLOCKEVENTS
  626. select GPIO_PXA
  627. select TICK_ONESHOT
  628. select PLAT_PXA
  629. select SPARSE_IRQ
  630. select AUTO_ZRELADDR
  631. select MULTI_IRQ_HANDLER
  632. select ARM_CPU_SUSPEND if PM
  633. select HAVE_IDE
  634. help
  635. Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
  636. config ARCH_MSM
  637. bool "Qualcomm MSM"
  638. select HAVE_CLK
  639. select GENERIC_CLOCKEVENTS
  640. select ARCH_REQUIRE_GPIOLIB
  641. select CLKDEV_LOOKUP
  642. help
  643. Support for Qualcomm MSM/QSD based systems. This runs on the
  644. apps processor of the MSM/QSD and depends on a shared memory
  645. interface to the modem processor which runs the baseband
  646. stack and controls some vital subsystems
  647. (clock and power control, etc).
  648. config ARCH_SHMOBILE
  649. bool "Renesas SH-Mobile / R-Mobile"
  650. select HAVE_CLK
  651. select CLKDEV_LOOKUP
  652. select HAVE_MACH_CLKDEV
  653. select HAVE_SMP
  654. select GENERIC_CLOCKEVENTS
  655. select MIGHT_HAVE_CACHE_L2X0
  656. select NO_IOPORT
  657. select SPARSE_IRQ
  658. select MULTI_IRQ_HANDLER
  659. select PM_GENERIC_DOMAINS if PM
  660. select NEED_MACH_MEMORY_H
  661. help
  662. Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
  663. config ARCH_RPC
  664. bool "RiscPC"
  665. select ARCH_ACORN
  666. select FIQ
  667. select ARCH_MAY_HAVE_PC_FDC
  668. select HAVE_PATA_PLATFORM
  669. select ISA_DMA_API
  670. select NO_IOPORT
  671. select ARCH_SPARSEMEM_ENABLE
  672. select ARCH_USES_GETTIMEOFFSET
  673. select HAVE_IDE
  674. select NEED_MACH_IO_H
  675. select NEED_MACH_MEMORY_H
  676. help
  677. On the Acorn Risc-PC, Linux can support the internal IDE disk and
  678. CD-ROM interface, serial and parallel port, and the floppy drive.
  679. config ARCH_SA1100
  680. bool "SA1100-based"
  681. select CLKSRC_MMIO
  682. select CPU_SA1100
  683. select ISA
  684. select ARCH_SPARSEMEM_ENABLE
  685. select ARCH_MTD_XIP
  686. select ARCH_HAS_CPUFREQ
  687. select CPU_FREQ
  688. select GENERIC_CLOCKEVENTS
  689. select CLKDEV_LOOKUP
  690. select TICK_ONESHOT
  691. select ARCH_REQUIRE_GPIOLIB
  692. select HAVE_IDE
  693. select NEED_MACH_MEMORY_H
  694. select SPARSE_IRQ
  695. help
  696. Support for StrongARM 11x0 based boards.
  697. config ARCH_S3C24XX
  698. bool "Samsung S3C24XX SoCs"
  699. select GENERIC_GPIO
  700. select ARCH_HAS_CPUFREQ
  701. select HAVE_CLK
  702. select CLKDEV_LOOKUP
  703. select ARCH_USES_GETTIMEOFFSET
  704. select HAVE_S3C2410_I2C if I2C
  705. select HAVE_S3C_RTC if RTC_CLASS
  706. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  707. select NEED_MACH_IO_H
  708. help
  709. Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
  710. and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
  711. (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
  712. Samsung SMDK2410 development board (and derivatives).
  713. config ARCH_S3C64XX
  714. bool "Samsung S3C64XX"
  715. select PLAT_SAMSUNG
  716. select CPU_V6
  717. select ARM_VIC
  718. select HAVE_CLK
  719. select HAVE_TCM
  720. select CLKDEV_LOOKUP
  721. select NO_IOPORT
  722. select ARCH_USES_GETTIMEOFFSET
  723. select ARCH_HAS_CPUFREQ
  724. select ARCH_REQUIRE_GPIOLIB
  725. select SAMSUNG_CLKSRC
  726. select SAMSUNG_IRQ_VIC_TIMER
  727. select S3C_GPIO_TRACK
  728. select S3C_DEV_NAND
  729. select USB_ARCH_HAS_OHCI
  730. select SAMSUNG_GPIOLIB_4BIT
  731. select HAVE_S3C2410_I2C if I2C
  732. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  733. help
  734. Samsung S3C64XX series based systems
  735. config ARCH_S5P64X0
  736. bool "Samsung S5P6440 S5P6450"
  737. select CPU_V6
  738. select GENERIC_GPIO
  739. select HAVE_CLK
  740. select CLKDEV_LOOKUP
  741. select CLKSRC_MMIO
  742. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  743. select GENERIC_CLOCKEVENTS
  744. select HAVE_S3C2410_I2C if I2C
  745. select HAVE_S3C_RTC if RTC_CLASS
  746. help
  747. Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
  748. SMDK6450.
  749. config ARCH_S5PC100
  750. bool "Samsung S5PC100"
  751. select GENERIC_GPIO
  752. select HAVE_CLK
  753. select CLKDEV_LOOKUP
  754. select CPU_V7
  755. select ARCH_USES_GETTIMEOFFSET
  756. select HAVE_S3C2410_I2C if I2C
  757. select HAVE_S3C_RTC if RTC_CLASS
  758. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  759. help
  760. Samsung S5PC100 series based systems
  761. config ARCH_S5PV210
  762. bool "Samsung S5PV210/S5PC110"
  763. select CPU_V7
  764. select ARCH_SPARSEMEM_ENABLE
  765. select ARCH_HAS_HOLES_MEMORYMODEL
  766. select GENERIC_GPIO
  767. select HAVE_CLK
  768. select CLKDEV_LOOKUP
  769. select CLKSRC_MMIO
  770. select ARCH_HAS_CPUFREQ
  771. select GENERIC_CLOCKEVENTS
  772. select HAVE_S3C2410_I2C if I2C
  773. select HAVE_S3C_RTC if RTC_CLASS
  774. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  775. select NEED_MACH_MEMORY_H
  776. help
  777. Samsung S5PV210/S5PC110 series based systems
  778. config ARCH_EXYNOS
  779. bool "SAMSUNG EXYNOS"
  780. select CPU_V7
  781. select ARCH_SPARSEMEM_ENABLE
  782. select ARCH_HAS_HOLES_MEMORYMODEL
  783. select GENERIC_GPIO
  784. select HAVE_CLK
  785. select CLKDEV_LOOKUP
  786. select ARCH_HAS_CPUFREQ
  787. select GENERIC_CLOCKEVENTS
  788. select HAVE_S3C_RTC if RTC_CLASS
  789. select HAVE_S3C2410_I2C if I2C
  790. select HAVE_S3C2410_WATCHDOG if WATCHDOG
  791. select NEED_MACH_MEMORY_H
  792. help
  793. Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5)
  794. config ARCH_SHARK
  795. bool "Shark"
  796. select CPU_SA110
  797. select ISA
  798. select ISA_DMA
  799. select ZONE_DMA
  800. select PCI
  801. select ARCH_USES_GETTIMEOFFSET
  802. select NEED_MACH_MEMORY_H
  803. select NEED_MACH_IO_H
  804. help
  805. Support for the StrongARM based Digital DNARD machine, also known
  806. as "Shark" (<http://www.shark-linux.de/shark.html>).
  807. config ARCH_U300
  808. bool "ST-Ericsson U300 Series"
  809. depends on MMU
  810. select CLKSRC_MMIO
  811. select CPU_ARM926T
  812. select HAVE_TCM
  813. select ARM_AMBA
  814. select ARM_PATCH_PHYS_VIRT
  815. select ARM_VIC
  816. select GENERIC_CLOCKEVENTS
  817. select CLKDEV_LOOKUP
  818. select HAVE_MACH_CLKDEV
  819. select GENERIC_GPIO
  820. select ARCH_REQUIRE_GPIOLIB
  821. help
  822. Support for ST-Ericsson U300 series mobile platforms.
  823. config ARCH_U8500
  824. bool "ST-Ericsson U8500 Series"
  825. depends on MMU
  826. select CPU_V7
  827. select ARM_AMBA
  828. select GENERIC_CLOCKEVENTS
  829. select CLKDEV_LOOKUP
  830. select ARCH_REQUIRE_GPIOLIB
  831. select ARCH_HAS_CPUFREQ
  832. select HAVE_SMP
  833. select MIGHT_HAVE_CACHE_L2X0
  834. help
  835. Support for ST-Ericsson's Ux500 architecture
  836. config ARCH_NOMADIK
  837. bool "STMicroelectronics Nomadik"
  838. select ARM_AMBA
  839. select ARM_VIC
  840. select CPU_ARM926T
  841. select CLKDEV_LOOKUP
  842. select GENERIC_CLOCKEVENTS
  843. select MIGHT_HAVE_CACHE_L2X0
  844. select ARCH_REQUIRE_GPIOLIB
  845. help
  846. Support for the Nomadik platform by ST-Ericsson
  847. config ARCH_DAVINCI
  848. bool "TI DaVinci"
  849. select GENERIC_CLOCKEVENTS
  850. select ARCH_REQUIRE_GPIOLIB
  851. select ZONE_DMA
  852. select HAVE_IDE
  853. select CLKDEV_LOOKUP
  854. select GENERIC_ALLOCATOR
  855. select GENERIC_IRQ_CHIP
  856. select ARCH_HAS_HOLES_MEMORYMODEL
  857. help
  858. Support for TI's DaVinci platform.
  859. config ARCH_OMAP
  860. bool "TI OMAP"
  861. select HAVE_CLK
  862. select ARCH_REQUIRE_GPIOLIB
  863. select ARCH_HAS_CPUFREQ
  864. select CLKSRC_MMIO
  865. select GENERIC_CLOCKEVENTS
  866. select ARCH_HAS_HOLES_MEMORYMODEL
  867. help
  868. Support for TI's OMAP platform (OMAP1/2/3/4).
  869. config PLAT_SPEAR
  870. bool "ST SPEAr"
  871. select ARM_AMBA
  872. select ARCH_REQUIRE_GPIOLIB
  873. select CLKDEV_LOOKUP
  874. select CLKSRC_MMIO
  875. select GENERIC_CLOCKEVENTS
  876. select HAVE_CLK
  877. help
  878. Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
  879. config ARCH_VT8500
  880. bool "VIA/WonderMedia 85xx"
  881. select CPU_ARM926T
  882. select GENERIC_GPIO
  883. select ARCH_HAS_CPUFREQ
  884. select GENERIC_CLOCKEVENTS
  885. select ARCH_REQUIRE_GPIOLIB
  886. select HAVE_PWM
  887. help
  888. Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
  889. config ARCH_ZYNQ
  890. bool "Xilinx Zynq ARM Cortex A9 Platform"
  891. select CPU_V7
  892. select GENERIC_CLOCKEVENTS
  893. select CLKDEV_LOOKUP
  894. select ARM_GIC
  895. select ARM_AMBA
  896. select ICST
  897. select MIGHT_HAVE_CACHE_L2X0
  898. select USE_OF
  899. help
  900. Support for Xilinx Zynq ARM Cortex A9 Platform
  901. endchoice
  902. #
  903. # This is sorted alphabetically by mach-* pathname. However, plat-*
  904. # Kconfigs may be included either alphabetically (according to the
  905. # plat- suffix) or along side the corresponding mach-* source.
  906. #
  907. source "arch/arm/mach-at91/Kconfig"
  908. source "arch/arm/mach-bcmring/Kconfig"
  909. source "arch/arm/mach-clps711x/Kconfig"
  910. source "arch/arm/mach-cns3xxx/Kconfig"
  911. source "arch/arm/mach-davinci/Kconfig"
  912. source "arch/arm/mach-dove/Kconfig"
  913. source "arch/arm/mach-ep93xx/Kconfig"
  914. source "arch/arm/mach-footbridge/Kconfig"
  915. source "arch/arm/mach-gemini/Kconfig"
  916. source "arch/arm/mach-h720x/Kconfig"
  917. source "arch/arm/mach-integrator/Kconfig"
  918. source "arch/arm/mach-iop32x/Kconfig"
  919. source "arch/arm/mach-iop33x/Kconfig"
  920. source "arch/arm/mach-iop13xx/Kconfig"
  921. source "arch/arm/mach-ixp4xx/Kconfig"
  922. source "arch/arm/mach-ixp2000/Kconfig"
  923. source "arch/arm/mach-ixp23xx/Kconfig"
  924. source "arch/arm/mach-kirkwood/Kconfig"
  925. source "arch/arm/mach-ks8695/Kconfig"
  926. source "arch/arm/mach-lpc32xx/Kconfig"
  927. source "arch/arm/mach-msm/Kconfig"
  928. source "arch/arm/mach-mv78xx0/Kconfig"
  929. source "arch/arm/plat-mxc/Kconfig"
  930. source "arch/arm/mach-mxs/Kconfig"
  931. source "arch/arm/mach-netx/Kconfig"
  932. source "arch/arm/mach-nomadik/Kconfig"
  933. source "arch/arm/plat-nomadik/Kconfig"
  934. source "arch/arm/plat-omap/Kconfig"
  935. source "arch/arm/mach-omap1/Kconfig"
  936. source "arch/arm/mach-omap2/Kconfig"
  937. source "arch/arm/mach-orion5x/Kconfig"
  938. source "arch/arm/mach-pxa/Kconfig"
  939. source "arch/arm/plat-pxa/Kconfig"
  940. source "arch/arm/mach-mmp/Kconfig"
  941. source "arch/arm/mach-realview/Kconfig"
  942. source "arch/arm/mach-sa1100/Kconfig"
  943. source "arch/arm/plat-samsung/Kconfig"
  944. source "arch/arm/plat-s3c24xx/Kconfig"
  945. source "arch/arm/plat-s5p/Kconfig"
  946. source "arch/arm/plat-spear/Kconfig"
  947. source "arch/arm/mach-s3c24xx/Kconfig"
  948. if ARCH_S3C24XX
  949. source "arch/arm/mach-s3c2412/Kconfig"
  950. source "arch/arm/mach-s3c2440/Kconfig"
  951. endif
  952. if ARCH_S3C64XX
  953. source "arch/arm/mach-s3c64xx/Kconfig"
  954. endif
  955. source "arch/arm/mach-s5p64x0/Kconfig"
  956. source "arch/arm/mach-s5pc100/Kconfig"
  957. source "arch/arm/mach-s5pv210/Kconfig"
  958. source "arch/arm/mach-exynos/Kconfig"
  959. source "arch/arm/mach-shmobile/Kconfig"
  960. source "arch/arm/mach-tegra/Kconfig"
  961. source "arch/arm/mach-u300/Kconfig"
  962. source "arch/arm/mach-ux500/Kconfig"
  963. source "arch/arm/mach-versatile/Kconfig"
  964. source "arch/arm/mach-vexpress/Kconfig"
  965. source "arch/arm/plat-versatile/Kconfig"
  966. source "arch/arm/mach-vt8500/Kconfig"
  967. source "arch/arm/mach-w90x900/Kconfig"
  968. # Definitions to make life easier
  969. config ARCH_ACORN
  970. bool
  971. config PLAT_IOP
  972. bool
  973. select GENERIC_CLOCKEVENTS
  974. config PLAT_ORION
  975. bool
  976. select CLKSRC_MMIO
  977. select GENERIC_IRQ_CHIP
  978. config PLAT_PXA
  979. bool
  980. config PLAT_VERSATILE
  981. bool
  982. config ARM_TIMER_SP804
  983. bool
  984. select CLKSRC_MMIO
  985. select HAVE_SCHED_CLOCK
  986. source arch/arm/mm/Kconfig
  987. config ARM_NR_BANKS
  988. int
  989. default 16 if ARCH_EP93XX
  990. default 8
  991. config IWMMXT
  992. bool "Enable iWMMXt support"
  993. depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
  994. default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
  995. help
  996. Enable support for iWMMXt context switching at run time if
  997. running on a CPU that supports it.
  998. config XSCALE_PMU
  999. bool
  1000. depends on CPU_XSCALE
  1001. default y
  1002. config CPU_HAS_PMU
  1003. depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
  1004. (!ARCH_OMAP3 || OMAP3_EMU)
  1005. default y
  1006. bool
  1007. config MULTI_IRQ_HANDLER
  1008. bool
  1009. help
  1010. Allow each machine to specify it's own IRQ handler at run time.
  1011. if !MMU
  1012. source "arch/arm/Kconfig-nommu"
  1013. endif
  1014. config ARM_ERRATA_411920
  1015. bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
  1016. depends on CPU_V6 || CPU_V6K
  1017. help
  1018. Invalidation of the Instruction Cache operation can
  1019. fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
  1020. It does not affect the MPCore. This option enables the ARM Ltd.
  1021. recommended workaround.
  1022. config ARM_ERRATA_430973
  1023. bool "ARM errata: Stale prediction on replaced interworking branch"
  1024. depends on CPU_V7
  1025. help
  1026. This option enables the workaround for the 430973 Cortex-A8
  1027. (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
  1028. interworking branch is replaced with another code sequence at the
  1029. same virtual address, whether due to self-modifying code or virtual
  1030. to physical address re-mapping, Cortex-A8 does not recover from the
  1031. stale interworking branch prediction. This results in Cortex-A8
  1032. executing the new code sequence in the incorrect ARM or Thumb state.
  1033. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
  1034. and also flushes the branch target cache at every context switch.
  1035. Note that setting specific bits in the ACTLR register may not be
  1036. available in non-secure mode.
  1037. config ARM_ERRATA_458693
  1038. bool "ARM errata: Processor deadlock when a false hazard is created"
  1039. depends on CPU_V7
  1040. help
  1041. This option enables the workaround for the 458693 Cortex-A8 (r2p0)
  1042. erratum. For very specific sequences of memory operations, it is
  1043. possible for a hazard condition intended for a cache line to instead
  1044. be incorrectly associated with a different cache line. This false
  1045. hazard might then cause a processor deadlock. The workaround enables
  1046. the L1 caching of the NEON accesses and disables the PLD instruction
  1047. in the ACTLR register. Note that setting specific bits in the ACTLR
  1048. register may not be available in non-secure mode.
  1049. config ARM_ERRATA_460075
  1050. bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
  1051. depends on CPU_V7
  1052. help
  1053. This option enables the workaround for the 460075 Cortex-A8 (r2p0)
  1054. erratum. Any asynchronous access to the L2 cache may encounter a
  1055. situation in which recent store transactions to the L2 cache are lost
  1056. and overwritten with stale memory contents from external memory. The
  1057. workaround disables the write-allocate mode for the L2 cache via the
  1058. ACTLR register. Note that setting specific bits in the ACTLR register
  1059. may not be available in non-secure mode.
  1060. config ARM_ERRATA_742230
  1061. bool "ARM errata: DMB operation may be faulty"
  1062. depends on CPU_V7 && SMP
  1063. help
  1064. This option enables the workaround for the 742230 Cortex-A9
  1065. (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
  1066. between two write operations may not ensure the correct visibility
  1067. ordering of the two writes. This workaround sets a specific bit in
  1068. the diagnostic register of the Cortex-A9 which causes the DMB
  1069. instruction to behave as a DSB, ensuring the correct behaviour of
  1070. the two writes.
  1071. config ARM_ERRATA_742231
  1072. bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
  1073. depends on CPU_V7 && SMP
  1074. help
  1075. This option enables the workaround for the 742231 Cortex-A9
  1076. (r2p0..r2p2) erratum. Under certain conditions, specific to the
  1077. Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
  1078. accessing some data located in the same cache line, may get corrupted
  1079. data due to bad handling of the address hazard when the line gets
  1080. replaced from one of the CPUs at the same time as another CPU is
  1081. accessing it. This workaround sets specific bits in the diagnostic
  1082. register of the Cortex-A9 which reduces the linefill issuing
  1083. capabilities of the processor.
  1084. config PL310_ERRATA_588369
  1085. bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines"
  1086. depends on CACHE_L2X0
  1087. help
  1088. The PL310 L2 cache controller implements three types of Clean &
  1089. Invalidate maintenance operations: by Physical Address
  1090. (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
  1091. They are architecturally defined to behave as the execution of a
  1092. clean operation followed immediately by an invalidate operation,
  1093. both performing to the same memory location. This functionality
  1094. is not correctly implemented in PL310 as clean lines are not
  1095. invalidated as a result of these operations.
  1096. config ARM_ERRATA_720789
  1097. bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
  1098. depends on CPU_V7
  1099. help
  1100. This option enables the workaround for the 720789 Cortex-A9 (prior to
  1101. r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
  1102. broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
  1103. As a consequence of this erratum, some TLB entries which should be
  1104. invalidated are not, resulting in an incoherency in the system page
  1105. tables. The workaround changes the TLB flushing routines to invalidate
  1106. entries regardless of the ASID.
  1107. config PL310_ERRATA_727915
  1108. bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption"
  1109. depends on CACHE_L2X0
  1110. help
  1111. PL310 implements the Clean & Invalidate by Way L2 cache maintenance
  1112. operation (offset 0x7FC). This operation runs in background so that
  1113. PL310 can handle normal accesses while it is in progress. Under very
  1114. rare circumstances, due to this erratum, write data can be lost when
  1115. PL310 treats a cacheable write transaction during a Clean &
  1116. Invalidate by Way operation.
  1117. config ARM_ERRATA_743622
  1118. bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
  1119. depends on CPU_V7
  1120. help
  1121. This option enables the workaround for the 743622 Cortex-A9
  1122. (r2p*) erratum. Under very rare conditions, a faulty
  1123. optimisation in the Cortex-A9 Store Buffer may lead to data
  1124. corruption. This workaround sets a specific bit in the diagnostic
  1125. register of the Cortex-A9 which disables the Store Buffer
  1126. optimisation, preventing the defect from occurring. This has no
  1127. visible impact on the overall performance or power consumption of the
  1128. processor.
  1129. config ARM_ERRATA_751472
  1130. bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
  1131. depends on CPU_V7
  1132. help
  1133. This option enables the workaround for the 751472 Cortex-A9 (prior
  1134. to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
  1135. completion of a following broadcasted operation if the second
  1136. operation is received by a CPU before the ICIALLUIS has completed,
  1137. potentially leading to corrupted entries in the cache or TLB.
  1138. config PL310_ERRATA_753970
  1139. bool "PL310 errata: cache sync operation may be faulty"
  1140. depends on CACHE_PL310
  1141. help
  1142. This option enables the workaround for the 753970 PL310 (r3p0) erratum.
  1143. Under some condition the effect of cache sync operation on
  1144. the store buffer still remains when the operation completes.
  1145. This means that the store buffer is always asked to drain and
  1146. this prevents it from merging any further writes. The workaround
  1147. is to replace the normal offset of cache sync operation (0x730)
  1148. by another offset targeting an unmapped PL310 register 0x740.
  1149. This has the same effect as the cache sync operation: store buffer
  1150. drain and waiting for all buffers empty.
  1151. config ARM_ERRATA_754322
  1152. bool "ARM errata: possible faulty MMU translations following an ASID switch"
  1153. depends on CPU_V7
  1154. help
  1155. This option enables the workaround for the 754322 Cortex-A9 (r2p*,
  1156. r3p*) erratum. A speculative memory access may cause a page table walk
  1157. which starts prior to an ASID switch but completes afterwards. This
  1158. can populate the micro-TLB with a stale entry which may be hit with
  1159. the new ASID. This workaround places two dsb instructions in the mm
  1160. switching code so that no page table walks can cross the ASID switch.
  1161. config ARM_ERRATA_754327
  1162. bool "ARM errata: no automatic Store Buffer drain"
  1163. depends on CPU_V7 && SMP
  1164. help
  1165. This option enables the workaround for the 754327 Cortex-A9 (prior to
  1166. r2p0) erratum. The Store Buffer does not have any automatic draining
  1167. mechanism and therefore a livelock may occur if an external agent
  1168. continuously polls a memory location waiting to observe an update.
  1169. This workaround defines cpu_relax() as smp_mb(), preventing correctly
  1170. written polling loops from denying visibility of updates to memory.
  1171. config ARM_ERRATA_364296
  1172. bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
  1173. depends on CPU_V6 && !SMP
  1174. help
  1175. This options enables the workaround for the 364296 ARM1136
  1176. r0p2 erratum (possible cache data corruption with
  1177. hit-under-miss enabled). It sets the undocumented bit 31 in
  1178. the auxiliary control register and the FI bit in the control
  1179. register, thus disabling hit-under-miss without putting the
  1180. processor into full low interrupt latency mode. ARM11MPCore
  1181. is not affected.
  1182. config ARM_ERRATA_764369
  1183. bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
  1184. depends on CPU_V7 && SMP
  1185. help
  1186. This option enables the workaround for erratum 764369
  1187. affecting Cortex-A9 MPCore with two or more processors (all
  1188. current revisions). Under certain timing circumstances, a data
  1189. cache line maintenance operation by MVA targeting an Inner
  1190. Shareable memory region may fail to proceed up to either the
  1191. Point of Coherency or to the Point of Unification of the
  1192. system. This workaround adds a DSB instruction before the
  1193. relevant cache maintenance functions and sets a specific bit
  1194. in the diagnostic control register of the SCU.
  1195. config PL310_ERRATA_769419
  1196. bool "PL310 errata: no automatic Store Buffer drain"
  1197. depends on CACHE_L2X0
  1198. help
  1199. On revisions of the PL310 prior to r3p2, the Store Buffer does
  1200. not automatically drain. This can cause normal, non-cacheable
  1201. writes to be retained when the memory system is idle, leading
  1202. to suboptimal I/O performance for drivers using coherent DMA.
  1203. This option adds a write barrier to the cpu_idle loop so that,
  1204. on systems with an outer cache, the store buffer is drained
  1205. explicitly.
  1206. endmenu
  1207. source "arch/arm/common/Kconfig"
  1208. menu "Bus support"
  1209. config ARM_AMBA
  1210. bool
  1211. config ISA
  1212. bool
  1213. help
  1214. Find out whether you have ISA slots on your motherboard. ISA is the
  1215. name of a bus system, i.e. the way the CPU talks to the other stuff
  1216. inside your box. Other bus systems are PCI, EISA, MicroChannel
  1217. (MCA) or VESA. ISA is an older system, now being displaced by PCI;
  1218. newer boards don't support it. If you have ISA, say Y, otherwise N.
  1219. # Select ISA DMA controller support
  1220. config ISA_DMA
  1221. bool
  1222. select ISA_DMA_API
  1223. # Select ISA DMA interface
  1224. config ISA_DMA_API
  1225. bool
  1226. config PCI
  1227. bool "PCI support" if MIGHT_HAVE_PCI
  1228. help
  1229. Find out whether you have a PCI motherboard. PCI is the name of a
  1230. bus system, i.e. the way the CPU talks to the other stuff inside
  1231. your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  1232. VESA. If you have PCI, say Y, otherwise N.
  1233. config PCI_DOMAINS
  1234. bool
  1235. depends on PCI
  1236. config PCI_NANOENGINE
  1237. bool "BSE nanoEngine PCI support"
  1238. depends on SA1100_NANOENGINE
  1239. help
  1240. Enable PCI on the BSE nanoEngine board.
  1241. config PCI_SYSCALL
  1242. def_bool PCI
  1243. # Select the host bridge type
  1244. config PCI_HOST_VIA82C505
  1245. bool
  1246. depends on PCI && ARCH_SHARK
  1247. default y
  1248. config PCI_HOST_ITE8152
  1249. bool
  1250. depends on PCI && MACH_ARMCORE
  1251. default y
  1252. select DMABOUNCE
  1253. source "drivers/pci/Kconfig"
  1254. source "drivers/pcmcia/Kconfig"
  1255. endmenu
  1256. menu "Kernel Features"
  1257. source "kernel/time/Kconfig"
  1258. config HAVE_SMP
  1259. bool
  1260. help
  1261. This option should be selected by machines which have an SMP-
  1262. capable CPU.
  1263. The only effect of this option is to make the SMP-related
  1264. options available to the user for configuration.
  1265. config SMP
  1266. bool "Symmetric Multi-Processing"
  1267. depends on CPU_V6K || CPU_V7
  1268. depends on GENERIC_CLOCKEVENTS
  1269. depends on HAVE_SMP
  1270. depends on MMU
  1271. select USE_GENERIC_SMP_HELPERS
  1272. select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
  1273. help
  1274. This enables support for systems with more than one CPU. If you have
  1275. a system with only one CPU, like most personal computers, say N. If
  1276. you have a system with more than one CPU, say Y.
  1277. If you say N here, the kernel will run on single and multiprocessor
  1278. machines, but will use only one CPU of a multiprocessor machine. If
  1279. you say Y here, the kernel will run on many, but not all, single
  1280. processor machines. On a single processor machine, the kernel will
  1281. run faster if you say N here.
  1282. See also <file:Documentation/x86/i386/IO-APIC.txt>,
  1283. <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
  1284. <http://tldp.org/HOWTO/SMP-HOWTO.html>.
  1285. If you don't know what to do here, say N.
  1286. config SMP_ON_UP
  1287. bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
  1288. depends on EXPERIMENTAL
  1289. depends on SMP && !XIP_KERNEL
  1290. default y
  1291. help
  1292. SMP kernels contain instructions which fail on non-SMP processors.
  1293. Enabling this option allows the kernel to modify itself to make
  1294. these instructions safe. Disabling it allows about 1K of space
  1295. savings.
  1296. If you don't know what to do here, say Y.
  1297. config ARM_CPU_TOPOLOGY
  1298. bool "Support cpu topology definition"
  1299. depends on SMP && CPU_V7
  1300. default y
  1301. help
  1302. Support ARM cpu topology definition. The MPIDR register defines
  1303. affinity between processors which is then used to describe the cpu
  1304. topology of an ARM System.
  1305. config SCHED_MC
  1306. bool "Multi-core scheduler support"
  1307. depends on ARM_CPU_TOPOLOGY
  1308. help
  1309. Multi-core scheduler support improves the CPU scheduler's decision
  1310. making when dealing with multi-core CPU chips at a cost of slightly
  1311. increased overhead in some places. If unsure say N here.
  1312. config SCHED_SMT
  1313. bool "SMT scheduler support"
  1314. depends on ARM_CPU_TOPOLOGY
  1315. help
  1316. Improves the CPU scheduler's decision making when dealing with
  1317. MultiThreading at a cost of slightly increased overhead in some
  1318. places. If unsure say N here.
  1319. config HAVE_ARM_SCU
  1320. bool
  1321. help
  1322. This option enables support for the ARM system coherency unit
  1323. config HAVE_ARM_TWD
  1324. bool
  1325. depends on SMP
  1326. select TICK_ONESHOT
  1327. help
  1328. This options enables support for the ARM timer and watchdog unit
  1329. choice
  1330. prompt "Memory split"
  1331. default VMSPLIT_3G
  1332. help
  1333. Select the desired split between kernel and user memory.
  1334. If you are not absolutely sure what you are doing, leave this
  1335. option alone!
  1336. config VMSPLIT_3G
  1337. bool "3G/1G user/kernel split"
  1338. config VMSPLIT_2G
  1339. bool "2G/2G user/kernel split"
  1340. config VMSPLIT_1G
  1341. bool "1G/3G user/kernel split"
  1342. endchoice
  1343. config PAGE_OFFSET
  1344. hex
  1345. default 0x40000000 if VMSPLIT_1G
  1346. default 0x80000000 if VMSPLIT_2G
  1347. default 0xC0000000
  1348. config NR_CPUS
  1349. int "Maximum number of CPUs (2-32)"
  1350. range 2 32
  1351. depends on SMP
  1352. default "4"
  1353. config HOTPLUG_CPU
  1354. bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
  1355. depends on SMP && HOTPLUG && EXPERIMENTAL
  1356. help
  1357. Say Y here to experiment with turning CPUs off and on. CPUs
  1358. can be controlled through /sys/devices/system/cpu.
  1359. config LOCAL_TIMERS
  1360. bool "Use local timer interrupts"
  1361. depends on SMP
  1362. default y
  1363. select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
  1364. help
  1365. Enable support for local timers on SMP platforms, rather then the
  1366. legacy IPI broadcast method. Local timers allows the system
  1367. accounting to be spread across the timer interval, preventing a
  1368. "thundering herd" at every timer tick.
  1369. config ARCH_NR_GPIO
  1370. int
  1371. default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
  1372. default 355 if ARCH_U8500
  1373. default 264 if MACH_H4700
  1374. default 0
  1375. help
  1376. Maximum number of GPIOs in the system.
  1377. If unsure, leave the default value.
  1378. source kernel/Kconfig.preempt
  1379. config HZ
  1380. int
  1381. default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \
  1382. ARCH_S5PV210 || ARCH_EXYNOS4
  1383. default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
  1384. default AT91_TIMER_HZ if ARCH_AT91
  1385. default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
  1386. default 100
  1387. config THUMB2_KERNEL
  1388. bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
  1389. depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
  1390. select AEABI
  1391. select ARM_ASM_UNIFIED
  1392. select ARM_UNWIND
  1393. help
  1394. By enabling this option, the kernel will be compiled in
  1395. Thumb-2 mode. A compiler/assembler that understand the unified
  1396. ARM-Thumb syntax is needed.
  1397. If unsure, say N.
  1398. config THUMB2_AVOID_R_ARM_THM_JUMP11
  1399. bool "Work around buggy Thumb-2 short branch relocations in gas"
  1400. depends on THUMB2_KERNEL && MODULES
  1401. default y
  1402. help
  1403. Various binutils versions can resolve Thumb-2 branches to
  1404. locally-defined, preemptible global symbols as short-range "b.n"
  1405. branch instructions.
  1406. This is a problem, because there's no guarantee the final
  1407. destination of the symbol, or any candidate locations for a
  1408. trampoline, are within range of the branch. For this reason, the
  1409. kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
  1410. relocation in modules at all, and it makes little sense to add
  1411. support.
  1412. The symptom is that the kernel fails with an "unsupported
  1413. relocation" error when loading some modules.
  1414. Until fixed tools are available, passing
  1415. -fno-optimize-sibling-calls to gcc should prevent gcc generating
  1416. code which hits this problem, at the cost of a bit of extra runtime
  1417. stack usage in some cases.
  1418. The problem is described in more detail at:
  1419. https://bugs.launchpad.net/binutils-linaro/+bug/725126
  1420. Only Thumb-2 kernels are affected.
  1421. Unless you are sure your tools don't have this problem, say Y.
  1422. config ARM_ASM_UNIFIED
  1423. bool
  1424. config AEABI
  1425. bool "Use the ARM EABI to compile the kernel"
  1426. help
  1427. This option allows for the kernel to be compiled using the latest
  1428. ARM ABI (aka EABI). This is only useful if you are using a user
  1429. space environment that is also compiled with EABI.
  1430. Since there are major incompatibilities between the legacy ABI and
  1431. EABI, especially with regard to structure member alignment, this
  1432. option also changes the kernel syscall calling convention to
  1433. disambiguate both ABIs and allow for backward compatibility support
  1434. (selected with CONFIG_OABI_COMPAT).
  1435. To use this you need GCC version 4.0.0 or later.
  1436. config OABI_COMPAT
  1437. bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
  1438. depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL
  1439. default y
  1440. help
  1441. This option preserves the old syscall interface along with the
  1442. new (ARM EABI) one. It also provides a compatibility layer to
  1443. intercept syscalls that have structure arguments which layout
  1444. in memory differs between the legacy ABI and the new ARM EABI
  1445. (only for non "thumb" binaries). This option adds a tiny
  1446. overhead to all syscalls and produces a slightly larger kernel.
  1447. If you know you'll be using only pure EABI user space then you
  1448. can say N here. If this option is not selected and you attempt
  1449. to execute a legacy ABI binary then the result will be
  1450. UNPREDICTABLE (in fact it can be predicted that it won't work
  1451. at all). If in doubt say Y.
  1452. config ARCH_HAS_HOLES_MEMORYMODEL
  1453. bool
  1454. config ARCH_SPARSEMEM_ENABLE
  1455. bool
  1456. config ARCH_SPARSEMEM_DEFAULT
  1457. def_bool ARCH_SPARSEMEM_ENABLE
  1458. config ARCH_SELECT_MEMORY_MODEL
  1459. def_bool ARCH_SPARSEMEM_ENABLE
  1460. config HAVE_ARCH_PFN_VALID
  1461. def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
  1462. config HIGHMEM
  1463. bool "High Memory Support"
  1464. depends on MMU
  1465. help
  1466. The address space of ARM processors is only 4 Gigabytes large
  1467. and it has to accommodate user address space, kernel address
  1468. space as well as some memory mapped IO. That means that, if you
  1469. have a large amount of physical memory and/or IO, not all of the
  1470. memory can be "permanently mapped" by the kernel. The physical
  1471. memory that is not permanently mapped is called "high memory".
  1472. Depending on the selected kernel/user memory split, minimum
  1473. vmalloc space and actual amount of RAM, you may not need this
  1474. option which should result in a slightly faster kernel.
  1475. If unsure, say n.
  1476. config HIGHPTE
  1477. bool "Allocate 2nd-level pagetables from highmem"
  1478. depends on HIGHMEM
  1479. config HW_PERF_EVENTS
  1480. bool "Enable hardware performance counter support for perf events"
  1481. depends on PERF_EVENTS && CPU_HAS_PMU
  1482. default y
  1483. help
  1484. Enable hardware performance counter support for perf events. If
  1485. disabled, perf events will use software events only.
  1486. source "mm/Kconfig"
  1487. config FORCE_MAX_ZONEORDER
  1488. int "Maximum zone order" if ARCH_SHMOBILE
  1489. range 11 64 if ARCH_SHMOBILE
  1490. default "9" if SA1111
  1491. default "11"
  1492. help
  1493. The kernel memory allocator divides physically contiguous memory
  1494. blocks into "zones", where each zone is a power of two number of
  1495. pages. This option selects the largest power of two that the kernel
  1496. keeps in the memory allocator. If you need to allocate very large
  1497. blocks of physically contiguous memory, then you may need to
  1498. increase this value.
  1499. This config option is actually maximum order plus one. For example,
  1500. a value of 11 means that the largest free memory block is 2^10 pages.
  1501. config LEDS
  1502. bool "Timer and CPU usage LEDs"
  1503. depends on ARCH_CDB89712 || ARCH_EBSA110 || \
  1504. ARCH_EBSA285 || ARCH_INTEGRATOR || \
  1505. ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
  1506. ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
  1507. ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
  1508. ARCH_AT91 || ARCH_DAVINCI || \
  1509. ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
  1510. help
  1511. If you say Y here, the LEDs on your machine will be used
  1512. to provide useful information about your current system status.
  1513. If you are compiling a kernel for a NetWinder or EBSA-285, you will
  1514. be able to select which LEDs are active using the options below. If
  1515. you are compiling a kernel for the EBSA-110 or the LART however, the
  1516. red LED will simply flash regularly to indicate that the system is
  1517. still functional. It is safe to say Y here if you have a CATS
  1518. system, but the driver will do nothing.
  1519. config LEDS_TIMER
  1520. bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
  1521. OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1522. || MACH_OMAP_PERSEUS2
  1523. depends on LEDS
  1524. depends on !GENERIC_CLOCKEVENTS
  1525. default y if ARCH_EBSA110
  1526. help
  1527. If you say Y here, one of the system LEDs (the green one on the
  1528. NetWinder, the amber one on the EBSA285, or the red one on the LART)
  1529. will flash regularly to indicate that the system is still
  1530. operational. This is mainly useful to kernel hackers who are
  1531. debugging unstable kernels.
  1532. The LART uses the same LED for both Timer LED and CPU usage LED
  1533. functions. You may choose to use both, but the Timer LED function
  1534. will overrule the CPU usage LED.
  1535. config LEDS_CPU
  1536. bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
  1537. !ARCH_OMAP) \
  1538. || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
  1539. || MACH_OMAP_PERSEUS2
  1540. depends on LEDS
  1541. help
  1542. If you say Y here, the red LED will be used to give a good real
  1543. time indication of CPU usage, by lighting whenever the idle task
  1544. is not currently executing.
  1545. The LART uses the same LED for both Timer LED and CPU usage LED
  1546. functions. You may choose to use both, but the Timer LED function
  1547. will overrule the CPU usage LED.
  1548. config ALIGNMENT_TRAP
  1549. bool
  1550. depends on CPU_CP15_MMU
  1551. default y if !ARCH_EBSA110
  1552. select HAVE_PROC_CPU if PROC_FS
  1553. help
  1554. ARM processors cannot fetch/store information which is not
  1555. naturally aligned on the bus, i.e., a 4 byte fetch must start at an
  1556. address divisible by 4. On 32-bit ARM processors, these non-aligned
  1557. fetch/store instructions will be emulated in software if you say
  1558. here, which has a severe performance impact. This is necessary for
  1559. correct operation of some network protocols. With an IP-only
  1560. configuration it is safe to say N, otherwise say Y.
  1561. config UACCESS_WITH_MEMCPY
  1562. bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
  1563. depends on MMU && EXPERIMENTAL
  1564. default y if CPU_FEROCEON
  1565. help
  1566. Implement faster copy_to_user and clear_user methods for CPU
  1567. cores where a 8-word STM instruction give significantly higher
  1568. memory write throughput than a sequence of individual 32bit stores.
  1569. A possible side effect is a slight increase in scheduling latency
  1570. between threads sharing the same address space if they invoke
  1571. such copy operations with large buffers.
  1572. However, if the CPU data cache is using a write-allocate mode,
  1573. this option is unlikely to provide any performance gain.
  1574. config SECCOMP
  1575. bool
  1576. prompt "Enable seccomp to safely compute untrusted bytecode"
  1577. ---help---
  1578. This kernel feature is useful for number crunching applications
  1579. that may need to compute untrusted bytecode during their
  1580. execution. By using pipes or other transports made available to
  1581. the process as file descriptors supporting the read/write
  1582. syscalls, it's possible to isolate those applications in
  1583. their own address space using seccomp. Once seccomp is
  1584. enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
  1585. and the task is only allowed to execute a few safe syscalls
  1586. defined by each seccomp mode.
  1587. config CC_STACKPROTECTOR
  1588. bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
  1589. depends on EXPERIMENTAL
  1590. help
  1591. This option turns on the -fstack-protector GCC feature. This
  1592. feature puts, at the beginning of functions, a canary value on
  1593. the stack just before the return address, and validates
  1594. the value just before actually returning. Stack based buffer
  1595. overflows (that need to overwrite this return address) now also
  1596. overwrite the canary, which gets detected and the attack is then
  1597. neutralized via a kernel panic.
  1598. This feature requires gcc version 4.2 or above.
  1599. config DEPRECATED_PARAM_STRUCT
  1600. bool "Provide old way to pass kernel parameters"
  1601. help
  1602. This was deprecated in 2001 and announced to live on for 5 years.
  1603. Some old boot loaders still use this way.
  1604. endmenu
  1605. menu "Boot options"
  1606. config USE_OF
  1607. bool "Flattened Device Tree support"
  1608. select OF
  1609. select OF_EARLY_FLATTREE
  1610. select IRQ_DOMAIN
  1611. help
  1612. Include support for flattened device tree machine descriptions.
  1613. # Compressed boot loader in ROM. Yes, we really want to ask about
  1614. # TEXT and BSS so we preserve their values in the config files.
  1615. config ZBOOT_ROM_TEXT
  1616. hex "Compressed ROM boot loader base address"
  1617. default "0"
  1618. help
  1619. The physical address at which the ROM-able zImage is to be
  1620. placed in the target. Platforms which normally make use of
  1621. ROM-able zImage formats normally set this to a suitable
  1622. value in their defconfig file.
  1623. If ZBOOT_ROM is not enabled, this has no effect.
  1624. config ZBOOT_ROM_BSS
  1625. hex "Compressed ROM boot loader BSS address"
  1626. default "0"
  1627. help
  1628. The base address of an area of read/write memory in the target
  1629. for the ROM-able zImage which must be available while the
  1630. decompressor is running. It must be large enough to hold the
  1631. entire decompressed kernel plus an additional 128 KiB.
  1632. Platforms which normally make use of ROM-able zImage formats
  1633. normally set this to a suitable value in their defconfig file.
  1634. If ZBOOT_ROM is not enabled, this has no effect.
  1635. config ZBOOT_ROM
  1636. bool "Compressed boot loader in ROM/flash"
  1637. depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
  1638. help
  1639. Say Y here if you intend to execute your compressed kernel image
  1640. (zImage) directly from ROM or flash. If unsure, say N.
  1641. choice
  1642. prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
  1643. depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
  1644. default ZBOOT_ROM_NONE
  1645. help
  1646. Include experimental SD/MMC loading code in the ROM-able zImage.
  1647. With this enabled it is possible to write the the ROM-able zImage
  1648. kernel image to an MMC or SD card and boot the kernel straight
  1649. from the reset vector. At reset the processor Mask ROM will load
  1650. the first part of the the ROM-able zImage which in turn loads the
  1651. rest the kernel image to RAM.
  1652. config ZBOOT_ROM_NONE
  1653. bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
  1654. help
  1655. Do not load image from SD or MMC
  1656. config ZBOOT_ROM_MMCIF
  1657. bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
  1658. help
  1659. Load image from MMCIF hardware block.
  1660. config ZBOOT_ROM_SH_MOBILE_SDHI
  1661. bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
  1662. help
  1663. Load image from SDHI hardware block
  1664. endchoice
  1665. config ARM_APPENDED_DTB
  1666. bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
  1667. depends on OF && !ZBOOT_ROM && EXPERIMENTAL
  1668. help
  1669. With this option, the boot code will look for a device tree binary
  1670. (DTB) appended to zImage
  1671. (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
  1672. This is meant as a backward compatibility convenience for those
  1673. systems with a bootloader that can't be upgraded to accommodate
  1674. the documented boot protocol using a device tree.
  1675. Beware that there is very little in terms of protection against
  1676. this option being confused by leftover garbage in memory that might
  1677. look like a DTB header after a reboot if no actual DTB is appended
  1678. to zImage. Do not leave this option active in a production kernel
  1679. if you don't intend to always append a DTB. Proper passing of the
  1680. location into r2 of a bootloader provided DTB is always preferable
  1681. to this option.
  1682. config ARM_ATAG_DTB_COMPAT
  1683. bool "Supplement the appended DTB with traditional ATAG information"
  1684. depends on ARM_APPENDED_DTB
  1685. help
  1686. Some old bootloaders can't be updated to a DTB capable one, yet
  1687. they provide ATAGs with memory configuration, the ramdisk address,
  1688. the kernel cmdline string, etc. Such information is dynamically
  1689. provided by the bootloader and can't always be stored in a static
  1690. DTB. To allow a device tree enabled kernel to be used with such
  1691. bootloaders, this option allows zImage to extract the information
  1692. from the ATAG list and store it at run time into the appended DTB.
  1693. config CMDLINE
  1694. string "Default kernel command string"
  1695. default ""
  1696. help
  1697. On some architectures (EBSA110 and CATS), there is currently no way
  1698. for the boot loader to pass arguments to the kernel. For these
  1699. architectures, you should supply some command-line options at build
  1700. time by entering them here. As a minimum, you should specify the
  1701. memory size and the root device (e.g., mem=64M root=/dev/nfs).
  1702. choice
  1703. prompt "Kernel command line type" if CMDLINE != ""
  1704. default CMDLINE_FROM_BOOTLOADER
  1705. config CMDLINE_FROM_BOOTLOADER
  1706. bool "Use bootloader kernel arguments if available"
  1707. help
  1708. Uses the command-line options passed by the boot loader. If
  1709. the boot loader doesn't provide any, the default kernel command
  1710. string provided in CMDLINE will be used.
  1711. config CMDLINE_EXTEND
  1712. bool "Extend bootloader kernel arguments"
  1713. help
  1714. The command-line arguments provided by the boot loader will be
  1715. appended to the default kernel command string.
  1716. config CMDLINE_FORCE
  1717. bool "Always use the default kernel command string"
  1718. help
  1719. Always use the default kernel command string, even if the boot
  1720. loader passes other arguments to the kernel.
  1721. This is useful if you cannot or don't want to change the
  1722. command-line options your boot loader passes to the kernel.
  1723. endchoice
  1724. config XIP_KERNEL
  1725. bool "Kernel Execute-In-Place from ROM"
  1726. depends on !ZBOOT_ROM && !ARM_LPAE
  1727. help
  1728. Execute-In-Place allows the kernel to run from non-volatile storage
  1729. directly addressable by the CPU, such as NOR flash. This saves RAM
  1730. space since the text section of the kernel is not loaded from flash
  1731. to RAM. Read-write sections, such as the data section and stack,
  1732. are still copied to RAM. The XIP kernel is not compressed since
  1733. it has to run directly from flash, so it will take more space to
  1734. store it. The flash address used to link the kernel object files,
  1735. and for storing it, is configuration dependent. Therefore, if you
  1736. say Y here, you must know the proper physical address where to
  1737. store the kernel image depending on your own flash memory usage.
  1738. Also note that the make target becomes "make xipImage" rather than
  1739. "make zImage" or "make Image". The final kernel binary to put in
  1740. ROM memory will be arch/arm/boot/xipImage.
  1741. If unsure, say N.
  1742. config XIP_PHYS_ADDR
  1743. hex "XIP Kernel Physical Location"
  1744. depends on XIP_KERNEL
  1745. default "0x00080000"
  1746. help
  1747. This is the physical address in your flash memory the kernel will
  1748. be linked for and stored to. This address is dependent on your
  1749. own flash usage.
  1750. config KEXEC
  1751. bool "Kexec system call (EXPERIMENTAL)"
  1752. depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
  1753. help
  1754. kexec is a system call that implements the ability to shutdown your
  1755. current kernel, and to start another kernel. It is like a reboot
  1756. but it is independent of the system firmware. And like a reboot
  1757. you can start any kernel with it, not just Linux.
  1758. It is an ongoing process to be certain the hardware in a machine
  1759. is properly shutdown, so do not be surprised if this code does not
  1760. initially work for you. It may help to enable device hotplugging
  1761. support.
  1762. config ATAGS_PROC
  1763. bool "Export atags in procfs"
  1764. depends on KEXEC
  1765. default y
  1766. help
  1767. Should the atags used to boot the kernel be exported in an "atags"
  1768. file in procfs. Useful with kexec.
  1769. config CRASH_DUMP
  1770. bool "Build kdump crash kernel (EXPERIMENTAL)"
  1771. depends on EXPERIMENTAL
  1772. help
  1773. Generate crash dump after being started by kexec. This should
  1774. be normally only set in special crash dump kernels which are
  1775. loaded in the main kernel with kexec-tools into a specially
  1776. reserved region and then later executed after a crash by
  1777. kdump/kexec. The crash dump kernel must be compiled to a
  1778. memory address not used by the main kernel
  1779. For more details see Documentation/kdump/kdump.txt
  1780. config AUTO_ZRELADDR
  1781. bool "Auto calculation of the decompressed kernel image address"
  1782. depends on !ZBOOT_ROM && !ARCH_U300
  1783. help
  1784. ZRELADDR is the physical address where the decompressed kernel
  1785. image will be placed. If AUTO_ZRELADDR is selected, the address
  1786. will be determined at run-time by masking the current IP with
  1787. 0xf8000000. This assumes the zImage being placed in the first 128MB
  1788. from start of memory.
  1789. endmenu
  1790. menu "CPU Power Management"
  1791. if ARCH_HAS_CPUFREQ
  1792. source "drivers/cpufreq/Kconfig"
  1793. config CPU_FREQ_IMX
  1794. tristate "CPUfreq driver for i.MX CPUs"
  1795. depends on ARCH_MXC && CPU_FREQ
  1796. help
  1797. This enables the CPUfreq driver for i.MX CPUs.
  1798. config CPU_FREQ_SA1100
  1799. bool
  1800. config CPU_FREQ_SA1110
  1801. bool
  1802. config CPU_FREQ_INTEGRATOR
  1803. tristate "CPUfreq driver for ARM Integrator CPUs"
  1804. depends on ARCH_INTEGRATOR && CPU_FREQ
  1805. default y
  1806. help
  1807. This enables the CPUfreq driver for ARM Integrator CPUs.
  1808. For details, take a look at <file:Documentation/cpu-freq>.
  1809. If in doubt, say Y.
  1810. config CPU_FREQ_PXA
  1811. bool
  1812. depends on CPU_FREQ && ARCH_PXA && PXA25x
  1813. default y
  1814. select CPU_FREQ_TABLE
  1815. select CPU_FREQ_DEFAULT_GOV_USERSPACE
  1816. config CPU_FREQ_S3C
  1817. bool
  1818. help
  1819. Internal configuration node for common cpufreq on Samsung SoC
  1820. config CPU_FREQ_S3C24XX
  1821. bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
  1822. depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL
  1823. select CPU_FREQ_S3C
  1824. help
  1825. This enables the CPUfreq driver for the Samsung S3C24XX family
  1826. of CPUs.
  1827. For details, take a look at <file:Documentation/cpu-freq>.
  1828. If in doubt, say N.
  1829. config CPU_FREQ_S3C24XX_PLL
  1830. bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
  1831. depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
  1832. help
  1833. Compile in support for changing the PLL frequency from the
  1834. S3C24XX series CPUfreq driver. The PLL takes time to settle
  1835. after a frequency change, so by default it is not enabled.
  1836. This also means that the PLL tables for the selected CPU(s) will
  1837. be built which may increase the size of the kernel image.
  1838. config CPU_FREQ_S3C24XX_DEBUG
  1839. bool "Debug CPUfreq Samsung driver core"
  1840. depends on CPU_FREQ_S3C24XX
  1841. help
  1842. Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
  1843. config CPU_FREQ_S3C24XX_IODEBUG
  1844. bool "Debug CPUfreq Samsung driver IO timing"
  1845. depends on CPU_FREQ_S3C24XX
  1846. help
  1847. Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
  1848. config CPU_FREQ_S3C24XX_DEBUGFS
  1849. bool "Export debugfs for CPUFreq"
  1850. depends on CPU_FREQ_S3C24XX && DEBUG_FS
  1851. help
  1852. Export status information via debugfs.
  1853. endif
  1854. source "drivers/cpuidle/Kconfig"
  1855. endmenu
  1856. menu "Floating point emulation"
  1857. comment "At least one emulation must be selected"
  1858. config FPE_NWFPE
  1859. bool "NWFPE math emulation"
  1860. depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
  1861. ---help---
  1862. Say Y to include the NWFPE floating point emulator in the kernel.
  1863. This is necessary to run most binaries. Linux does not currently
  1864. support floating point hardware so you need to say Y here even if
  1865. your machine has an FPA or floating point co-processor podule.
  1866. You may say N here if you are going to load the Acorn FPEmulator
  1867. early in the bootup.
  1868. config FPE_NWFPE_XP
  1869. bool "Support extended precision"
  1870. depends on FPE_NWFPE
  1871. help
  1872. Say Y to include 80-bit support in the kernel floating-point
  1873. emulator. Otherwise, only 32 and 64-bit support is compiled in.
  1874. Note that gcc does not generate 80-bit operations by default,
  1875. so in most cases this option only enlarges the size of the
  1876. floating point emulator without any good reason.
  1877. You almost surely want to say N here.
  1878. config FPE_FASTFPE
  1879. bool "FastFPE math emulation (EXPERIMENTAL)"
  1880. depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
  1881. ---help---
  1882. Say Y here to include the FAST floating point emulator in the kernel.
  1883. This is an experimental much faster emulator which now also has full
  1884. precision for the mantissa. It does not support any exceptions.
  1885. It is very simple, and approximately 3-6 times faster than NWFPE.
  1886. It should be sufficient for most programs. It may be not suitable
  1887. for scientific calculations, but you have to check this for yourself.
  1888. If you do not feel you need a faster FP emulation you should better
  1889. choose NWFPE.
  1890. config VFP
  1891. bool "VFP-format floating point maths"
  1892. depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
  1893. help
  1894. Say Y to include VFP support code in the kernel. This is needed
  1895. if your hardware includes a VFP unit.
  1896. Please see <file:Documentation/arm/VFP/release-notes.txt> for
  1897. release notes and additional status information.
  1898. Say N if your target does not have VFP hardware.
  1899. config VFPv3
  1900. bool
  1901. depends on VFP
  1902. default y if CPU_V7
  1903. config NEON
  1904. bool "Advanced SIMD (NEON) Extension support"
  1905. depends on VFPv3 && CPU_V7
  1906. help
  1907. Say Y to include support code for NEON, the ARMv7 Advanced SIMD
  1908. Extension.
  1909. endmenu
  1910. menu "Userspace binary formats"
  1911. source "fs/Kconfig.binfmt"
  1912. config ARTHUR
  1913. tristate "RISC OS personality"
  1914. depends on !AEABI
  1915. help
  1916. Say Y here to include the kernel code necessary if you want to run
  1917. Acorn RISC OS/Arthur binaries under Linux. This code is still very
  1918. experimental; if this sounds frightening, say N and sleep in peace.
  1919. You can also say M here to compile this support as a module (which
  1920. will be called arthur).
  1921. endmenu
  1922. menu "Power management options"
  1923. source "kernel/power/Kconfig"
  1924. config ARCH_SUSPEND_POSSIBLE
  1925. depends on !ARCH_S5PC100
  1926. depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
  1927. CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
  1928. def_bool y
  1929. config ARM_CPU_SUSPEND
  1930. def_bool PM_SLEEP
  1931. endmenu
  1932. source "net/Kconfig"
  1933. source "drivers/Kconfig"
  1934. source "fs/Kconfig"
  1935. source "arch/arm/Kconfig.debug"
  1936. source "security/Kconfig"
  1937. source "crypto/Kconfig"
  1938. source "lib/Kconfig"