11da177e4SLinus Torvaldsconfig ARM 21da177e4SLinus Torvalds bool 31da177e4SLinus Torvalds default y 4e17c6d56SDavid Woodhouse select HAVE_AOUT 524056f52SRussell King select HAVE_DMA_API_DEBUG 62064c946SAdrian Bunk select HAVE_IDE 72778f620SRussell King select HAVE_MEMBLOCK 812b824fbSAlessandro Zummo select RTC_LIB 975e7153aSRalf Baechle select SYS_SUPPORTS_APM_EMULATION 10d4c7b1f9SWill Deacon select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI) 11fe166148SWill Deacon select HAVE_OPROFILE if (HAVE_PERF_EVENTS) 125cbad0ebSJason Wessel select HAVE_ARCH_KGDB 13ed7c84d5SDave Martin select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL) 149edddaa2SAnanth N Mavinakayanahalli select HAVE_KRETPROBES if (HAVE_KPROBES) 15606576ceSSteven Rostedt select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 1680be7a7fSRabin Vincent select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL) 1780be7a7fSRabin Vincent select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) 180e341af8SRabin Vincent select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL) 191fe53268SDmitry Baryshkov select HAVE_GENERIC_DMA_COHERENT 20e7db7b42SAlbin Tonnerre select HAVE_KERNEL_GZIP 21e7db7b42SAlbin Tonnerre select HAVE_KERNEL_LZO 226e8699f7SAlbin Tonnerre select HAVE_KERNEL_LZMA 23e360adbeSPeter Zijlstra select HAVE_IRQ_WORK 247ada189fSJamie Iles select HAVE_PERF_EVENTS 257ada189fSJamie Iles select PERF_USE_VMALLOC 26e513f8bfSWill Deacon select HAVE_REGS_AND_STACK_ACCESS_API 2719852e59SWill Deacon select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7)) 28ed60453fSRabin Vincent select HAVE_C_RECORDMCOUNT 29e2a93eccSLennert Buytenhek select HAVE_GENERIC_HARDIRQS 30e2a93eccSLennert Buytenhek select HAVE_SPARSE_IRQ 311da177e4SLinus Torvalds help 321da177e4SLinus Torvalds The ARM series is a line of low-power-consumption RISC chip designs 33f6c8965aSMartin Michlmayr licensed by ARM Ltd and targeted at embedded applications and 341da177e4SLinus Torvalds handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 351da177e4SLinus Torvalds manufactured, but legacy ARM-based PC hardware remains popular in 361da177e4SLinus Torvalds Europe. There is an ARM Linux project with a web page at 371da177e4SLinus Torvalds <http://www.arm.linux.org.uk/>. 381da177e4SLinus Torvalds 391a189b97SRussell Kingconfig HAVE_PWM 401a189b97SRussell King bool 411a189b97SRussell King 420b05da72SHans Ulli Krollconfig MIGHT_HAVE_PCI 430b05da72SHans Ulli Kroll bool 440b05da72SHans Ulli Kroll 4575e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION 4675e7153aSRalf Baechle bool 4775e7153aSRalf Baechle 48112f38a4SRussell Kingconfig HAVE_SCHED_CLOCK 49112f38a4SRussell King bool 50112f38a4SRussell King 510a938b97SDavid Brownellconfig GENERIC_GPIO 520a938b97SDavid Brownell bool 530a938b97SDavid Brownell 545cfc8ee0SJohn Stultzconfig ARCH_USES_GETTIMEOFFSET 555cfc8ee0SJohn Stultz bool 565cfc8ee0SJohn Stultz default n 57746140c7SKevin Hilman 580567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS 590567a0c0SKevin Hilman bool 600567a0c0SKevin Hilman 61a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST 62a8655e83SCatalin Marinas bool 63a8655e83SCatalin Marinas depends on GENERIC_CLOCKEVENTS 645388a6b2SRussell King default y if SMP 65a8655e83SCatalin Marinas 66bc581770SLinus Walleijconfig HAVE_TCM 67bc581770SLinus Walleij bool 68bc581770SLinus Walleij select GENERIC_ALLOCATOR 69bc581770SLinus Walleij 70e119bfffSRussell Kingconfig HAVE_PROC_CPU 71e119bfffSRussell King bool 72e119bfffSRussell King 735ea81769SAl Viroconfig NO_IOPORT 745ea81769SAl Viro bool 755ea81769SAl Viro 761da177e4SLinus Torvaldsconfig EISA 771da177e4SLinus Torvalds bool 781da177e4SLinus Torvalds ---help--- 791da177e4SLinus Torvalds The Extended Industry Standard Architecture (EISA) bus was 801da177e4SLinus Torvalds developed as an open alternative to the IBM MicroChannel bus. 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds The EISA bus provided some of the features of the IBM MicroChannel 831da177e4SLinus Torvalds bus while maintaining backward compatibility with cards made for 841da177e4SLinus Torvalds the older ISA bus. The EISA bus saw limited use between 1988 and 851da177e4SLinus Torvalds 1995 when it was made obsolete by the PCI bus. 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds Say Y here if you are building a kernel for an EISA-based machine. 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds Otherwise, say N. 901da177e4SLinus Torvalds 911da177e4SLinus Torvaldsconfig SBUS 921da177e4SLinus Torvalds bool 931da177e4SLinus Torvalds 941da177e4SLinus Torvaldsconfig MCA 951da177e4SLinus Torvalds bool 961da177e4SLinus Torvalds help 971da177e4SLinus Torvalds MicroChannel Architecture is found in some IBM PS/2 machines and 981da177e4SLinus Torvalds laptops. It is a bus system similar to PCI or ISA. See 991da177e4SLinus Torvalds <file:Documentation/mca.txt> (and especially the web page given 1001da177e4SLinus Torvalds there) before attempting to build an MCA bus kernel. 1011da177e4SLinus Torvalds 102f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT 103f16fb1ecSRussell King bool 104f16fb1ecSRussell King default y 105f16fb1ecSRussell King 106f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT 107f76e9154SNicolas Pitre bool 108f76e9154SNicolas Pitre depends on !SMP 109f76e9154SNicolas Pitre default y 110f76e9154SNicolas Pitre 111f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT 112f16fb1ecSRussell King bool 113f16fb1ecSRussell King default y 114f16fb1ecSRussell King 1157ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT 1167ad1bcb2SRussell King bool 1177ad1bcb2SRussell King default y 1187ad1bcb2SRussell King 1194a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND 1204a2581a0SThomas Gleixner bool 1214a2581a0SThomas Gleixner default y 1224a2581a0SThomas Gleixner 1234a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE 1244a2581a0SThomas Gleixner bool 1254a2581a0SThomas Gleixner default y 1264a2581a0SThomas Gleixner 12795c354feSNick Pigginconfig GENERIC_LOCKBREAK 12895c354feSNick Piggin bool 12995c354feSNick Piggin default y 13095c354feSNick Piggin depends on SMP && PREEMPT 13195c354feSNick Piggin 1321da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK 1331da177e4SLinus Torvalds bool 1341da177e4SLinus Torvalds default y 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM 1371da177e4SLinus Torvalds bool 1381da177e4SLinus Torvalds 139f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 140f0d1b0b3SDavid Howells bool 141f0d1b0b3SDavid Howells 142f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 143f0d1b0b3SDavid Howells bool 144f0d1b0b3SDavid Howells 14589c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ 14689c52ed4SBen Dooks bool 14789c52ed4SBen Dooks help 14889c52ed4SBen Dooks Internal node to signify that the ARCH has CPUFREQ support 14989c52ed4SBen Dooks and that the relevant menu configurations are displayed for 15089c52ed4SBen Dooks it. 15189c52ed4SBen Dooks 152c7b0aff4SKevin Hilmanconfig ARCH_HAS_CPU_IDLE_WAIT 153c7b0aff4SKevin Hilman def_bool y 154c7b0aff4SKevin Hilman 155b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT 156b89c3b16SAkinobu Mita bool 157b89c3b16SAkinobu Mita default y 158b89c3b16SAkinobu Mita 1591da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY 1601da177e4SLinus Torvalds bool 1611da177e4SLinus Torvalds default y 1621da177e4SLinus Torvalds 163a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC 164a08b6b79Sviro@ZenIV.linux.org.uk bool 165a08b6b79Sviro@ZenIV.linux.org.uk 1665ac6da66SChristoph Lameterconfig ZONE_DMA 1675ac6da66SChristoph Lameter bool 1685ac6da66SChristoph Lameter 169ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE 170ccd7ab7fSFUJITA Tomonori def_bool y 171ccd7ab7fSFUJITA Tomonori 1721da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA 1731da177e4SLinus Torvalds bool 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvaldsconfig FIQ 1761da177e4SLinus Torvalds bool 1771da177e4SLinus Torvalds 178034d2f5aSAl Viroconfig ARCH_MTD_XIP 179034d2f5aSAl Viro bool 180034d2f5aSAl Viro 181d6d502faSKukjin Kimconfig ARM_L1_CACHE_SHIFT_6 182d6d502faSKukjin Kim bool 183d6d502faSKukjin Kim help 184d6d502faSKukjin Kim Setting ARM L1 cache line size to 64 Bytes. 185d6d502faSKukjin Kim 186c760fc19SHyok S. Choiconfig VECTORS_BASE 187c760fc19SHyok S. Choi hex 1886afd6faeSHyok S. Choi default 0xffff0000 if MMU || CPU_HIGH_VECTOR 189c760fc19SHyok S. Choi default DRAM_BASE if REMAP_VECTORS_TO_RAM 190c760fc19SHyok S. Choi default 0x00000000 191c760fc19SHyok S. Choi help 192c760fc19SHyok S. Choi The base address of exception vectors. 193c760fc19SHyok S. Choi 1941da177e4SLinus Torvaldssource "init/Kconfig" 1951da177e4SLinus Torvalds 196dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 197dc52ddc0SMatt Helsley 1981da177e4SLinus Torvaldsmenu "System Type" 1991da177e4SLinus Torvalds 2003c427975SHyok S. Choiconfig MMU 2013c427975SHyok S. Choi bool "MMU-based Paged Memory Management Support" 2023c427975SHyok S. Choi default y 2033c427975SHyok S. Choi help 2043c427975SHyok S. Choi Select if you want MMU-based virtualised addressing space 2053c427975SHyok S. Choi support by paged memory management. If unsure, say 'Y'. 2063c427975SHyok S. Choi 207ccf50e23SRussell King# 208ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option 209ccf50e23SRussell King# text. Please add new entries in the option alphabetic order. 210ccf50e23SRussell King# 2111da177e4SLinus Torvaldschoice 2121da177e4SLinus Torvalds prompt "ARM system type" 2136a0e2430SCatalin Marinas default ARCH_VERSATILE 2141da177e4SLinus Torvalds 2154af6fee1SDeepak Saxenaconfig ARCH_AAEC2000 2164af6fee1SDeepak Saxena bool "Agilent AAEC-2000 based" 217c750815eSRussell King select CPU_ARM920T 2184af6fee1SDeepak Saxena select ARM_AMBA 2199483a578SDavid Brownell select HAVE_CLK 2205cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 2214af6fee1SDeepak Saxena help 2224af6fee1SDeepak Saxena This enables support for systems based on the Agilent AAEC-2000 2234af6fee1SDeepak Saxena 2244af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR 2254af6fee1SDeepak Saxena bool "ARM Ltd. Integrator family" 2264af6fee1SDeepak Saxena select ARM_AMBA 22789c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 2286d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 229c5a0adb5SRussell King select ICST 23013edd86dSRussell King select GENERIC_CLOCKEVENTS 231f4b8b319SRussell King select PLAT_VERSATILE 2324af6fee1SDeepak Saxena help 2334af6fee1SDeepak Saxena Support for ARM's Integrator platform. 2344af6fee1SDeepak Saxena 2354af6fee1SDeepak Saxenaconfig ARCH_REALVIEW 2364af6fee1SDeepak Saxena bool "ARM Ltd. RealView family" 2374af6fee1SDeepak Saxena select ARM_AMBA 2386d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 2391da0c89cSRussell King select HAVE_SCHED_CLOCK 240c5a0adb5SRussell King select ICST 241ae30ceacSCatalin Marinas select GENERIC_CLOCKEVENTS 242eb7fffa3SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 243f4b8b319SRussell King select PLAT_VERSATILE 244e3887714SRussell King select ARM_TIMER_SP804 245b56ba8aaSColin Tuckley select GPIO_PL061 if GPIOLIB 2464af6fee1SDeepak Saxena help 2474af6fee1SDeepak Saxena This enables support for ARM Ltd RealView boards. 2484af6fee1SDeepak Saxena 2494af6fee1SDeepak Saxenaconfig ARCH_VERSATILE 2504af6fee1SDeepak Saxena bool "ARM Ltd. Versatile family" 2514af6fee1SDeepak Saxena select ARM_AMBA 2524af6fee1SDeepak Saxena select ARM_VIC 2536d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 2541da0c89cSRussell King select HAVE_SCHED_CLOCK 255c5a0adb5SRussell King select ICST 25689df1272SKevin Hilman select GENERIC_CLOCKEVENTS 257bbeddc43SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 258f4b8b319SRussell King select PLAT_VERSATILE 259*3414ba8cSRussell King select PLAT_VERSATILE_CLCD 260e3887714SRussell King select ARM_TIMER_SP804 2614af6fee1SDeepak Saxena help 2624af6fee1SDeepak Saxena This enables support for ARM Ltd Versatile board. 2634af6fee1SDeepak Saxena 264ceade897SRussell Kingconfig ARCH_VEXPRESS 265ceade897SRussell King bool "ARM Ltd. Versatile Express family" 266ceade897SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 267ceade897SRussell King select ARM_AMBA 268ceade897SRussell King select ARM_TIMER_SP804 2696d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 270ceade897SRussell King select GENERIC_CLOCKEVENTS 271ceade897SRussell King select HAVE_CLK 2720af85ddaSRussell King select HAVE_SCHED_CLOCK 27395c34f83SNick Bowler select HAVE_PATA_PLATFORM 274ceade897SRussell King select ICST 275ceade897SRussell King select PLAT_VERSATILE 276ceade897SRussell King help 277ceade897SRussell King This enables support for the ARM Ltd Versatile Express boards. 278ceade897SRussell King 2798fc5ffa0SAndrew Victorconfig ARCH_AT91 2808fc5ffa0SAndrew Victor bool "Atmel AT91" 281f373e8c0SRyan Mallon select ARCH_REQUIRE_GPIOLIB 28293686ae8SDavid Brownell select HAVE_CLK 2834af6fee1SDeepak Saxena help 2842b3b3516SAndrew Victor This enables support for systems based on the Atmel AT91RM9200, 2852b3b3516SAndrew Victor AT91SAM9 and AT91CAP9 processors. 2864af6fee1SDeepak Saxena 287ccf50e23SRussell Kingconfig ARCH_BCMRING 288ccf50e23SRussell King bool "Broadcom BCMRING" 289ccf50e23SRussell King depends on MMU 290ccf50e23SRussell King select CPU_V6 291ccf50e23SRussell King select ARM_AMBA 2926d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 293ccf50e23SRussell King select GENERIC_CLOCKEVENTS 294ccf50e23SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 295ccf50e23SRussell King help 296ccf50e23SRussell King Support for Broadcom's BCMRing platform. 297ccf50e23SRussell King 2981da177e4SLinus Torvaldsconfig ARCH_CLPS711X 2994af6fee1SDeepak Saxena bool "Cirrus Logic CLPS711x/EP721x-based" 300c750815eSRussell King select CPU_ARM720T 3015cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 302f999b8bdSMartin Michlmayr help 303f999b8bdSMartin Michlmayr Support for Cirrus Logic 711x/721x based boards. 3041da177e4SLinus Torvalds 305d94f944eSAnton Vorontsovconfig ARCH_CNS3XXX 306d94f944eSAnton Vorontsov bool "Cavium Networks CNS3XXX family" 307d94f944eSAnton Vorontsov select CPU_V6 308d94f944eSAnton Vorontsov select GENERIC_CLOCKEVENTS 309d94f944eSAnton Vorontsov select ARM_GIC 3100b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 3115f32f7a0SAnton Vorontsov select PCI_DOMAINS if PCI 312d94f944eSAnton Vorontsov help 313d94f944eSAnton Vorontsov Support for Cavium Networks CNS3XXX platform. 314d94f944eSAnton Vorontsov 315788c9700SRussell Kingconfig ARCH_GEMINI 316788c9700SRussell King bool "Cortina Systems Gemini" 317788c9700SRussell King select CPU_FA526 318788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 3195cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 320788c9700SRussell King help 321788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 322788c9700SRussell King 3231da177e4SLinus Torvaldsconfig ARCH_EBSA110 3241da177e4SLinus Torvalds bool "EBSA-110" 325c750815eSRussell King select CPU_SA110 326f7e68bbfSRussell King select ISA 327c5eb2a2bSRussell King select NO_IOPORT 3285cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 3291da177e4SLinus Torvalds help 3301da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 331f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 3321da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 3331da177e4SLinus Torvalds parallel port. 3341da177e4SLinus Torvalds 335e7736d47SLennert Buytenhekconfig ARCH_EP93XX 336e7736d47SLennert Buytenhek bool "EP93xx-based" 337c750815eSRussell King select CPU_ARM920T 338e7736d47SLennert Buytenhek select ARM_AMBA 339e7736d47SLennert Buytenhek select ARM_VIC 3406d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 3417444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 342eb33575cSMel Gorman select ARCH_HAS_HOLES_MEMORYMODEL 3435cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 344e7736d47SLennert Buytenhek help 345e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 346e7736d47SLennert Buytenhek 3471da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 3481da177e4SLinus Torvalds bool "FootBridge" 349c750815eSRussell King select CPU_SA110 3501da177e4SLinus Torvalds select FOOTBRIDGE 3515cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 352f999b8bdSMartin Michlmayr help 353f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 354f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 3551da177e4SLinus Torvalds 356788c9700SRussell Kingconfig ARCH_MXC 357788c9700SRussell King bool "Freescale MXC/iMX-based" 358788c9700SRussell King select GENERIC_CLOCKEVENTS 359788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 3606d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 361788c9700SRussell King help 362788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 363788c9700SRussell King 3641d3f33d5SShawn Guoconfig ARCH_MXS 3651d3f33d5SShawn Guo bool "Freescale MXS-based" 3661d3f33d5SShawn Guo select GENERIC_CLOCKEVENTS 3671d3f33d5SShawn Guo select ARCH_REQUIRE_GPIOLIB 368b9214b97SSascha Hauer select CLKDEV_LOOKUP 3691d3f33d5SShawn Guo help 3701d3f33d5SShawn Guo Support for Freescale MXS-based family of processors 3711d3f33d5SShawn Guo 3727bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX 3737bd0f2f5Sdmitry pervushin bool "Freescale STMP3xxx" 3747bd0f2f5Sdmitry pervushin select CPU_ARM926T 3756d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 3767bd0f2f5Sdmitry pervushin select ARCH_REQUIRE_GPIOLIB 3777bd0f2f5Sdmitry pervushin select GENERIC_CLOCKEVENTS 3787bd0f2f5Sdmitry pervushin select USB_ARCH_HAS_EHCI 3797bd0f2f5Sdmitry pervushin help 3807bd0f2f5Sdmitry pervushin Support for systems based on the Freescale 3xxx CPUs. 3817bd0f2f5Sdmitry pervushin 3824af6fee1SDeepak Saxenaconfig ARCH_NETX 3834af6fee1SDeepak Saxena bool "Hilscher NetX based" 384c750815eSRussell King select CPU_ARM926T 3854af6fee1SDeepak Saxena select ARM_VIC 3862fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 387f999b8bdSMartin Michlmayr help 3884af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 3894af6fee1SDeepak Saxena 3904af6fee1SDeepak Saxenaconfig ARCH_H720X 3914af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 392c750815eSRussell King select CPU_ARM720T 3934af6fee1SDeepak Saxena select ISA_DMA_API 3945cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 3954af6fee1SDeepak Saxena help 3964af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 3974af6fee1SDeepak Saxena 3983b938be6SRussell Kingconfig ARCH_IOP13XX 3993b938be6SRussell King bool "IOP13xx-based" 4003b938be6SRussell King depends on MMU 401c750815eSRussell King select CPU_XSC3 4023b938be6SRussell King select PLAT_IOP 4033b938be6SRussell King select PCI 4043b938be6SRussell King select ARCH_SUPPORTS_MSI 4058d5796d2SLennert Buytenhek select VMSPLIT_1G 4063b938be6SRussell King help 4073b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 4083b938be6SRussell King 4093f7e5815SLennert Buytenhekconfig ARCH_IOP32X 4103f7e5815SLennert Buytenhek bool "IOP32x-based" 411a4f7e763SRussell King depends on MMU 412c750815eSRussell King select CPU_XSCALE 4137ae1f7ecSLennert Buytenhek select PLAT_IOP 414f7e68bbfSRussell King select PCI 415bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 416f999b8bdSMartin Michlmayr help 4173f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 4183f7e5815SLennert Buytenhek processors. 4193f7e5815SLennert Buytenhek 4203f7e5815SLennert Buytenhekconfig ARCH_IOP33X 4213f7e5815SLennert Buytenhek bool "IOP33x-based" 4223f7e5815SLennert Buytenhek depends on MMU 423c750815eSRussell King select CPU_XSCALE 4247ae1f7ecSLennert Buytenhek select PLAT_IOP 4253f7e5815SLennert Buytenhek select PCI 426bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 4273f7e5815SLennert Buytenhek help 4283f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 4291da177e4SLinus Torvalds 4303b938be6SRussell Kingconfig ARCH_IXP23XX 4313b938be6SRussell King bool "IXP23XX-based" 432588ef769SDan Williams depends on MMU 433c750815eSRussell King select CPU_XSC3 434285f5fa7SDan Williams select PCI 4355cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 436285f5fa7SDan Williams help 4373b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvaldsconfig ARCH_IXP2000 4401da177e4SLinus Torvalds bool "IXP2400/2800-based" 441a4f7e763SRussell King depends on MMU 442c750815eSRussell King select CPU_XSCALE 443f7e68bbfSRussell King select PCI 4445cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 445f999b8bdSMartin Michlmayr help 446f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 4471da177e4SLinus Torvalds 4483b938be6SRussell Kingconfig ARCH_IXP4XX 4493b938be6SRussell King bool "IXP4xx-based" 450a4f7e763SRussell King depends on MMU 451c750815eSRussell King select CPU_XSCALE 4528858e9afSMilan Svoboda select GENERIC_GPIO 4533b938be6SRussell King select GENERIC_CLOCKEVENTS 4545b0d495cSRussell King select HAVE_SCHED_CLOCK 4550b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 456485bdde7SRussell King select DMABOUNCE if PCI 457c4713074SLennert Buytenhek help 4583b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 459c4713074SLennert Buytenhek 460edabd38eSSaeed Bisharaconfig ARCH_DOVE 461edabd38eSSaeed Bishara bool "Marvell Dove" 462edabd38eSSaeed Bishara select PCI 463edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 464edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 465edabd38eSSaeed Bishara select PLAT_ORION 466edabd38eSSaeed Bishara help 467edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 468edabd38eSSaeed Bishara 469651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 470651c74c7SSaeed Bishara bool "Marvell Kirkwood" 471c750815eSRussell King select CPU_FEROCEON 472651c74c7SSaeed Bishara select PCI 473a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 474651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 475651c74c7SSaeed Bishara select PLAT_ORION 476651c74c7SSaeed Bishara help 477651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 478651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 479651c74c7SSaeed Bishara 480788c9700SRussell Kingconfig ARCH_LOKI 481788c9700SRussell King bool "Marvell Loki (88RC8480)" 482788c9700SRussell King select CPU_FEROCEON 483788c9700SRussell King select GENERIC_CLOCKEVENTS 484788c9700SRussell King select PLAT_ORION 485788c9700SRussell King help 486788c9700SRussell King Support for the Marvell Loki (88RC8480) SoC. 487788c9700SRussell King 48840805949SKevin Wellsconfig ARCH_LPC32XX 48940805949SKevin Wells bool "NXP LPC32XX" 49040805949SKevin Wells select CPU_ARM926T 49140805949SKevin Wells select ARCH_REQUIRE_GPIOLIB 49240805949SKevin Wells select HAVE_IDE 49340805949SKevin Wells select ARM_AMBA 49440805949SKevin Wells select USB_ARCH_HAS_OHCI 4956d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 49640805949SKevin Wells select GENERIC_TIME 49740805949SKevin Wells select GENERIC_CLOCKEVENTS 49840805949SKevin Wells help 49940805949SKevin Wells Support for the NXP LPC32XX family of processors 50040805949SKevin Wells 501788c9700SRussell Kingconfig ARCH_MV78XX0 502788c9700SRussell King bool "Marvell MV78xx0" 503788c9700SRussell King select CPU_FEROCEON 504788c9700SRussell King select PCI 505a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 506788c9700SRussell King select GENERIC_CLOCKEVENTS 507788c9700SRussell King select PLAT_ORION 508788c9700SRussell King help 509788c9700SRussell King Support for the following Marvell MV78xx0 series SoCs: 510788c9700SRussell King MV781x0, MV782x0. 511788c9700SRussell King 512788c9700SRussell Kingconfig ARCH_ORION5X 513788c9700SRussell King bool "Marvell Orion" 514788c9700SRussell King depends on MMU 515788c9700SRussell King select CPU_FEROCEON 516788c9700SRussell King select PCI 517a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 518788c9700SRussell King select GENERIC_CLOCKEVENTS 519788c9700SRussell King select PLAT_ORION 520788c9700SRussell King help 521788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 522788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 523788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 524788c9700SRussell King 525788c9700SRussell Kingconfig ARCH_MMP 5262f7e8faeSHaojian Zhuang bool "Marvell PXA168/910/MMP2" 527788c9700SRussell King depends on MMU 528788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 5296d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 530788c9700SRussell King select GENERIC_CLOCKEVENTS 53128bb7bc6SRussell King select HAVE_SCHED_CLOCK 532788c9700SRussell King select TICK_ONESHOT 533788c9700SRussell King select PLAT_PXA 5340bd86961SHaojian Zhuang select SPARSE_IRQ 535788c9700SRussell King help 5362f7e8faeSHaojian Zhuang Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 537788c9700SRussell King 538c53c9cf6SAndrew Victorconfig ARCH_KS8695 539c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 540c750815eSRussell King select CPU_ARM922T 54172880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 5425cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 543c53c9cf6SAndrew Victor help 544c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 545c53c9cf6SAndrew Victor System-on-Chip devices. 546c53c9cf6SAndrew Victor 5479918cda5SUwe Kleine-Königconfig ARCH_NS9XXX 5489918cda5SUwe Kleine-König bool "NetSilicon NS9xxx" 549c750815eSRussell King select CPU_ARM926T 550689f2a01SUwe Kleine-König select GENERIC_GPIO 551c0bb87f7SUwe Kleine-König select GENERIC_CLOCKEVENTS 5529483a578SDavid Brownell select HAVE_CLK 5539918cda5SUwe Kleine-König help 5549918cda5SUwe Kleine-König Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 5559918cda5SUwe Kleine-König System. 5569918cda5SUwe Kleine-König 5579918cda5SUwe Kleine-König <http://www.digi.com/products/microprocessors/index.jsp> 5589918cda5SUwe Kleine-König 559788c9700SRussell Kingconfig ARCH_W90X900 560788c9700SRussell King bool "Nuvoton W90X900 CPU" 561788c9700SRussell King select CPU_ARM926T 562c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 5636d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 56458b5369eSwanzongshun select GENERIC_CLOCKEVENTS 565777f9bebSLennert Buytenhek help 566a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 567a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 568a8bc4eadSwanzongshun the ARM series product line, you can login the following 569a8bc4eadSwanzongshun link address to know more. 570a8bc4eadSwanzongshun 571a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 572a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 573585cf175STzachi Perelstein 574a62e9030Swanzongshunconfig ARCH_NUC93X 575a62e9030Swanzongshun bool "Nuvoton NUC93X CPU" 576a62e9030Swanzongshun select CPU_ARM926T 5776d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 578a62e9030Swanzongshun help 579a62e9030Swanzongshun Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 580a62e9030Swanzongshun low-power and high performance MPEG-4/JPEG multimedia controller chip. 581a62e9030Swanzongshun 582c5f80065SErik Gillingconfig ARCH_TEGRA 583c5f80065SErik Gilling bool "NVIDIA Tegra" 5844073723aSRussell King select CLKDEV_LOOKUP 585c5f80065SErik Gilling select GENERIC_TIME 586c5f80065SErik Gilling select GENERIC_CLOCKEVENTS 587c5f80065SErik Gilling select GENERIC_GPIO 588c5f80065SErik Gilling select HAVE_CLK 589e3f4c0abSRussell King select HAVE_SCHED_CLOCK 590c5f80065SErik Gilling select ARCH_HAS_BARRIERS if CACHE_L2X0 5917056d423SColin Cross select ARCH_HAS_CPUFREQ 592c5f80065SErik Gilling help 593c5f80065SErik Gilling This enables support for NVIDIA Tegra based systems (Tegra APX, 594c5f80065SErik Gilling Tegra 6xx and Tegra 2 series). 595c5f80065SErik Gilling 5964af6fee1SDeepak Saxenaconfig ARCH_PNX4008 5974af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 598c750815eSRussell King select CPU_ARM926T 5996d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 6005cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 6014af6fee1SDeepak Saxena help 6024af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 6034af6fee1SDeepak Saxena 6041da177e4SLinus Torvaldsconfig ARCH_PXA 6052c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 606a4f7e763SRussell King depends on MMU 607034d2f5aSAl Viro select ARCH_MTD_XIP 60889c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6096d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 6107444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 611981d0f39SEric Miao select GENERIC_CLOCKEVENTS 6127ce83018SRussell King select HAVE_SCHED_CLOCK 613a88264c2SRussell King select TICK_ONESHOT 614bd5ce433SEric Miao select PLAT_PXA 6156ac6b817SHaojian Zhuang select SPARSE_IRQ 616f999b8bdSMartin Michlmayr help 6172c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 6181da177e4SLinus Torvalds 619788c9700SRussell Kingconfig ARCH_MSM 620788c9700SRussell King bool "Qualcomm MSM" 6214b536b8dSSteve Muckle select HAVE_CLK 62249cbe786SEric Miao select GENERIC_CLOCKEVENTS 623923a081cSPavel Machek select ARCH_REQUIRE_GPIOLIB 62449cbe786SEric Miao help 6254b53eb4fSDaniel Walker Support for Qualcomm MSM/QSD based systems. This runs on the 6264b53eb4fSDaniel Walker apps processor of the MSM/QSD and depends on a shared memory 6274b53eb4fSDaniel Walker interface to the modem processor which runs the baseband 6284b53eb4fSDaniel Walker stack and controls some vital subsystems 6294b53eb4fSDaniel Walker (clock and power control, etc). 63049cbe786SEric Miao 631c793c1b0SMagnus Dammconfig ARCH_SHMOBILE 6326d72ad35SPaul Mundt bool "Renesas SH-Mobile / R-Mobile" 6336d72ad35SPaul Mundt select HAVE_CLK 6345e93c6b4SPaul Mundt select CLKDEV_LOOKUP 6356d72ad35SPaul Mundt select GENERIC_CLOCKEVENTS 6366d72ad35SPaul Mundt select NO_IOPORT 6376d72ad35SPaul Mundt select SPARSE_IRQ 63860f1435cSMagnus Damm select MULTI_IRQ_HANDLER 639c793c1b0SMagnus Damm help 6406d72ad35SPaul Mundt Support for Renesas's SH-Mobile and R-Mobile ARM platforms. 641c793c1b0SMagnus Damm 6421da177e4SLinus Torvaldsconfig ARCH_RPC 6431da177e4SLinus Torvalds bool "RiscPC" 6441da177e4SLinus Torvalds select ARCH_ACORN 6451da177e4SLinus Torvalds select FIQ 6461da177e4SLinus Torvalds select TIMER_ACORN 647a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 648341eb781SBen Dooks select HAVE_PATA_PLATFORM 649065909b9SRussell King select ISA_DMA_API 6505ea81769SAl Viro select NO_IOPORT 65107f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 6525cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 6531da177e4SLinus Torvalds help 6541da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 6551da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvaldsconfig ARCH_SA1100 6581da177e4SLinus Torvalds bool "SA1100-based" 659c750815eSRussell King select CPU_SA1100 660f7e68bbfSRussell King select ISA 66105944d74SRussell King select ARCH_SPARSEMEM_ENABLE 662034d2f5aSAl Viro select ARCH_MTD_XIP 66389c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6641937f5b9SRussell King select CPU_FREQ 6653e238be2SRussell King select GENERIC_CLOCKEVENTS 6669483a578SDavid Brownell select HAVE_CLK 6675094b92fSRussell King select HAVE_SCHED_CLOCK 6683e238be2SRussell King select TICK_ONESHOT 6697444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 670f999b8bdSMartin Michlmayr help 671f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvaldsconfig ARCH_S3C2410 67463b1f51bSBen Dooks bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450" 6750a938b97SDavid Brownell select GENERIC_GPIO 6769d56c02aSBen Dooks select ARCH_HAS_CPUFREQ 6779483a578SDavid Brownell select HAVE_CLK 6785cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 67920676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 6801da177e4SLinus Torvalds help 6811da177e4SLinus Torvalds Samsung S3C2410X CPU based systems, such as the Simtec Electronics 6821da177e4SLinus Torvalds BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 683f6c8965aSMartin Michlmayr the Samsung SMDK2410 development board (and derivatives). 6841da177e4SLinus Torvalds 68563b1f51bSBen Dooks Note, the S3C2416 and the S3C2450 are so close that they even share 68663b1f51bSBen Dooks the same SoC ID code. This means that there is no seperate machine 68763b1f51bSBen Dooks directory (no arch/arm/mach-s3c2450) as the S3C2416 was first. 68863b1f51bSBen Dooks 689a08ab637SBen Dooksconfig ARCH_S3C64XX 690a08ab637SBen Dooks bool "Samsung S3C64XX" 69189f1fa08SBen Dooks select PLAT_SAMSUNG 69289f0ce72SBen Dooks select CPU_V6 69389f0ce72SBen Dooks select ARM_VIC 694a08ab637SBen Dooks select HAVE_CLK 69589f0ce72SBen Dooks select NO_IOPORT 6965cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 69789c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 69889f0ce72SBen Dooks select ARCH_REQUIRE_GPIOLIB 69989f0ce72SBen Dooks select SAMSUNG_CLKSRC 70089f0ce72SBen Dooks select SAMSUNG_IRQ_VIC_TIMER 70189f0ce72SBen Dooks select SAMSUNG_IRQ_UART 70289f0ce72SBen Dooks select S3C_GPIO_TRACK 70389f0ce72SBen Dooks select S3C_GPIO_PULL_UPDOWN 70489f0ce72SBen Dooks select S3C_GPIO_CFG_S3C24XX 70589f0ce72SBen Dooks select S3C_GPIO_CFG_S3C64XX 70689f0ce72SBen Dooks select S3C_DEV_NAND 70789f0ce72SBen Dooks select USB_ARCH_HAS_OHCI 70889f0ce72SBen Dooks select SAMSUNG_GPIOLIB_4BIT 70920676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 710c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 711a08ab637SBen Dooks help 712a08ab637SBen Dooks Samsung S3C64XX series based systems 713a08ab637SBen Dooks 71449b7a491SKukjin Kimconfig ARCH_S5P64X0 71549b7a491SKukjin Kim bool "Samsung S5P6440 S5P6450" 716c4ffccddSKukjin Kim select CPU_V6 717c4ffccddSKukjin Kim select GENERIC_GPIO 718c4ffccddSKukjin Kim select HAVE_CLK 719c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 720925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 72120676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 722754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 723c4ffccddSKukjin Kim help 72449b7a491SKukjin Kim Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440, 72549b7a491SKukjin Kim SMDK6450. 726c4ffccddSKukjin Kim 727550db7f1SKukjin Kimconfig ARCH_S5P6442 728550db7f1SKukjin Kim bool "Samsung S5P6442" 729550db7f1SKukjin Kim select CPU_V6 730550db7f1SKukjin Kim select GENERIC_GPIO 731550db7f1SKukjin Kim select HAVE_CLK 732925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 733c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 734550db7f1SKukjin Kim help 735550db7f1SKukjin Kim Samsung S5P6442 CPU based systems 736550db7f1SKukjin Kim 737acc84707SMarek Szyprowskiconfig ARCH_S5PC100 738acc84707SMarek Szyprowski bool "Samsung S5PC100" 7395a7652f2SByungho Min select GENERIC_GPIO 7405a7652f2SByungho Min select HAVE_CLK 7415a7652f2SByungho Min select CPU_V7 742d6d502faSKukjin Kim select ARM_L1_CACHE_SHIFT_6 743925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 74420676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 745754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 746c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 7475a7652f2SByungho Min help 748acc84707SMarek Szyprowski Samsung S5PC100 series based systems 7495a7652f2SByungho Min 750170f4e42SKukjin Kimconfig ARCH_S5PV210 751170f4e42SKukjin Kim bool "Samsung S5PV210/S5PC110" 752170f4e42SKukjin Kim select CPU_V7 753eecb6a84SKyungmin Park select ARCH_SPARSEMEM_ENABLE 754170f4e42SKukjin Kim select GENERIC_GPIO 755170f4e42SKukjin Kim select HAVE_CLK 756170f4e42SKukjin Kim select ARM_L1_CACHE_SHIFT_6 757d8144aeaSJaecheol Lee select ARCH_HAS_CPUFREQ 758925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 75920676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 760754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 761c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 762170f4e42SKukjin Kim help 763170f4e42SKukjin Kim Samsung S5PV210/S5PC110 series based systems 764170f4e42SKukjin Kim 765cc0e72b8SChanghwan Younconfig ARCH_S5PV310 766cc0e72b8SChanghwan Youn bool "Samsung S5PV310/S5PC210" 767cc0e72b8SChanghwan Youn select CPU_V7 768f567fa6fSKyungmin Park select ARCH_SPARSEMEM_ENABLE 769cc0e72b8SChanghwan Youn select GENERIC_GPIO 770cc0e72b8SChanghwan Youn select HAVE_CLK 771b333fb16SSunyoung Kang select ARCH_HAS_CPUFREQ 772cc0e72b8SChanghwan Youn select GENERIC_CLOCKEVENTS 773754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 77420676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 775c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 776cc0e72b8SChanghwan Youn help 777cc0e72b8SChanghwan Youn Samsung S5PV310 series based systems 778cc0e72b8SChanghwan Youn 7791da177e4SLinus Torvaldsconfig ARCH_SHARK 7801da177e4SLinus Torvalds bool "Shark" 781c750815eSRussell King select CPU_SA110 782f7e68bbfSRussell King select ISA 783f7e68bbfSRussell King select ISA_DMA 7843bca103aSNicolas Pitre select ZONE_DMA 785f7e68bbfSRussell King select PCI 7865cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 787f999b8bdSMartin Michlmayr help 788f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 789f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 7901da177e4SLinus Torvalds 79183ef3338SHans J. Kochconfig ARCH_TCC_926 79283ef3338SHans J. Koch bool "Telechips TCC ARM926-based systems" 79383ef3338SHans J. Koch select CPU_ARM926T 79483ef3338SHans J. Koch select HAVE_CLK 7956d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 79683ef3338SHans J. Koch select GENERIC_CLOCKEVENTS 79783ef3338SHans J. Koch help 79883ef3338SHans J. Koch Support for Telechips TCC ARM926-based systems. 79983ef3338SHans J. Koch 8001da177e4SLinus Torvaldsconfig ARCH_LH7A40X 8011da177e4SLinus Torvalds bool "Sharp LH7A40X" 802c750815eSRussell King select CPU_ARM922T 8034ba3f7c5SRussell King select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 8045cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 8051da177e4SLinus Torvalds help 8061da177e4SLinus Torvalds Say Y here for systems based on one of the Sharp LH7A40X 8071da177e4SLinus Torvalds System on a Chip processors. These CPUs include an ARM922T 8081da177e4SLinus Torvalds core with a wide array of integrated devices for 8091da177e4SLinus Torvalds hand-held and low-power applications. 8101da177e4SLinus Torvalds 811d98aac75SLinus Walleijconfig ARCH_U300 812d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 813d98aac75SLinus Walleij depends on MMU 814d98aac75SLinus Walleij select CPU_ARM926T 8155c21b7caSRussell King select HAVE_SCHED_CLOCK 816bc581770SLinus Walleij select HAVE_TCM 817d98aac75SLinus Walleij select ARM_AMBA 818d98aac75SLinus Walleij select ARM_VIC 819d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 8206d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 821d98aac75SLinus Walleij select GENERIC_GPIO 822d98aac75SLinus Walleij help 823d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 824d98aac75SLinus Walleij 825ccf50e23SRussell Kingconfig ARCH_U8500 826ccf50e23SRussell King bool "ST-Ericsson U8500 Series" 827ccf50e23SRussell King select CPU_V7 828ccf50e23SRussell King select ARM_AMBA 829ccf50e23SRussell King select GENERIC_CLOCKEVENTS 8306d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 83194bdc0e2SRabin Vincent select ARCH_REQUIRE_GPIOLIB 8327c1a70e9SMartin Persson select ARCH_HAS_CPUFREQ 833ccf50e23SRussell King help 834ccf50e23SRussell King Support for ST-Ericsson's Ux500 architecture 835ccf50e23SRussell King 836ccf50e23SRussell Kingconfig ARCH_NOMADIK 837ccf50e23SRussell King bool "STMicroelectronics Nomadik" 838ccf50e23SRussell King select ARM_AMBA 839ccf50e23SRussell King select ARM_VIC 840ccf50e23SRussell King select CPU_ARM926T 8416d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 842ccf50e23SRussell King select GENERIC_CLOCKEVENTS 843ccf50e23SRussell King select ARCH_REQUIRE_GPIOLIB 844ccf50e23SRussell King help 845ccf50e23SRussell King Support for the Nomadik platform by ST-Ericsson 846ccf50e23SRussell King 8477c6337e2SKevin Hilmanconfig ARCH_DAVINCI 8487c6337e2SKevin Hilman bool "TI DaVinci" 8497c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 850dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 8513bca103aSNicolas Pitre select ZONE_DMA 8529232fcc9SKevin Hilman select HAVE_IDE 8536d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 85420e9969bSDavid Brownell select GENERIC_ALLOCATOR 855ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 8567c6337e2SKevin Hilman help 8577c6337e2SKevin Hilman Support for TI's DaVinci platform. 8587c6337e2SKevin Hilman 8593b938be6SRussell Kingconfig ARCH_OMAP 8603b938be6SRussell King bool "TI OMAP" 8619483a578SDavid Brownell select HAVE_CLK 8627444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 86389c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 86406cad098SKevin Hilman select GENERIC_CLOCKEVENTS 865dc548fbbSRussell King select HAVE_SCHED_CLOCK 8669af915daSSriram select ARCH_HAS_HOLES_MEMORYMODEL 8673b938be6SRussell King help 8686e457bb0SLennert Buytenhek Support for TI's OMAP platform (OMAP1/2/3/4). 8693b938be6SRussell King 870cee37e50Sviresh kumarconfig PLAT_SPEAR 871cee37e50Sviresh kumar bool "ST SPEAr" 872cee37e50Sviresh kumar select ARM_AMBA 873cee37e50Sviresh kumar select ARCH_REQUIRE_GPIOLIB 8746d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 875cee37e50Sviresh kumar select GENERIC_CLOCKEVENTS 876cee37e50Sviresh kumar select HAVE_CLK 877cee37e50Sviresh kumar help 878cee37e50Sviresh kumar Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). 879cee37e50Sviresh kumar 8801da177e4SLinus Torvaldsendchoice 8811da177e4SLinus Torvalds 882ccf50e23SRussell King# 883ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname. However, plat-* 884ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the 885ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source. 886ccf50e23SRussell King# 88795b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig" 88895b8f20fSRussell King 88995b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig" 89095b8f20fSRussell King 89195b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig" 89295b8f20fSRussell King 8931da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 8941da177e4SLinus Torvalds 895d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig" 896d94f944eSAnton Vorontsov 89795b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig" 89895b8f20fSRussell King 89995b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig" 90095b8f20fSRussell King 901e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 902e7736d47SLennert Buytenhek 9031da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 9041da177e4SLinus Torvalds 90559d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 90659d3a193SPaulius Zaleckas 90795b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig" 90895b8f20fSRussell King 9091da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 9101da177e4SLinus Torvalds 9113f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 9123f7e5815SLennert Buytenhek 9133f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 9141da177e4SLinus Torvalds 915285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 916285f5fa7SDan Williams 9171da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 9201da177e4SLinus Torvalds 921c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 922c4713074SLennert Buytenhek 92395b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig" 92495b8f20fSRussell King 92595b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig" 92695b8f20fSRussell King 92795b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig" 92895b8f20fSRussell King 929777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig" 930777f9bebSLennert Buytenhek 93140805949SKevin Wellssource "arch/arm/mach-lpc32xx/Kconfig" 93240805949SKevin Wells 93395b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig" 93495b8f20fSRussell King 935794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 936794d15b2SStanislav Samsonov 93795b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig" 9381da177e4SLinus Torvalds 9391d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig" 9401d3f33d5SShawn Guo 94195b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig" 94249cbe786SEric Miao 94395b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig" 94495b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig" 94595b8f20fSRussell King 94695b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig" 9471da177e4SLinus Torvalds 948d91a8910SRussell Kingsource "arch/arm/mach-nuc93x/Kconfig" 949d91a8910SRussell King 950d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 951d48af15eSTony Lindgren 952d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 9531da177e4SLinus Torvalds 9541dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 9551dbae815STony Lindgren 9569dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 957585cf175STzachi Perelstein 95895b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig" 95995b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig" 9601da177e4SLinus Torvalds 96195b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig" 96295b8f20fSRussell King 96395b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig" 96495b8f20fSRussell King 96595b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig" 966edabd38eSSaeed Bishara 967cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 968a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 969c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig" 970a21765a7SBen Dooks 971cee37e50Sviresh kumarsource "arch/arm/plat-spear/Kconfig" 972a21765a7SBen Dooks 97383ef3338SHans J. Kochsource "arch/arm/plat-tcc/Kconfig" 97483ef3338SHans J. Koch 975a21765a7SBen Dooksif ARCH_S3C2410 976a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig" 9771da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig" 978a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 979f1290a49SYauhen Kharuzhysource "arch/arm/mach-s3c2416/Kconfig" 980a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 981e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig" 982a21765a7SBen Dooksendif 9831da177e4SLinus Torvalds 984a08ab637SBen Dooksif ARCH_S3C64XX 985431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig" 986a08ab637SBen Dooksendif 987a08ab637SBen Dooks 98849b7a491SKukjin Kimsource "arch/arm/mach-s5p64x0/Kconfig" 989c4ffccddSKukjin Kim 990550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig" 9917bd0f2f5Sdmitry pervushin 9925a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 9935a7652f2SByungho Min 994170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig" 995170f4e42SKukjin Kim 996cc0e72b8SChanghwan Younsource "arch/arm/mach-s5pv310/Kconfig" 997cc0e72b8SChanghwan Youn 998882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig" 9991da177e4SLinus Torvalds 1000882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig" 10019e73c84cSBrian Swetland 1002c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig" 1003c5f80065SErik Gilling 100495b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig" 100552c543f9SQuinn Jensen 100695b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig" 10071da177e4SLinus Torvalds 10081da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 10091da177e4SLinus Torvalds 1010ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig" 1011420c34e4SRussell Kingsource "arch/arm/plat-versatile/Kconfig" 1012ceade897SRussell King 10137ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 10147ec80ddfSwanzongshun 10151da177e4SLinus Torvalds# Definitions to make life easier 10161da177e4SLinus Torvaldsconfig ARCH_ACORN 10171da177e4SLinus Torvalds bool 10181da177e4SLinus Torvalds 10197ae1f7ecSLennert Buytenhekconfig PLAT_IOP 10207ae1f7ecSLennert Buytenhek bool 1021469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 102208f26b1eSRussell King select HAVE_SCHED_CLOCK 10237ae1f7ecSLennert Buytenhek 102469b02f6aSLennert Buytenhekconfig PLAT_ORION 102569b02f6aSLennert Buytenhek bool 1026f06a1624SRussell King select HAVE_SCHED_CLOCK 102769b02f6aSLennert Buytenhek 1028bd5ce433SEric Miaoconfig PLAT_PXA 1029bd5ce433SEric Miao bool 1030bd5ce433SEric Miao 1031f4b8b319SRussell Kingconfig PLAT_VERSATILE 1032f4b8b319SRussell King bool 1033f4b8b319SRussell King 1034e3887714SRussell Kingconfig ARM_TIMER_SP804 1035e3887714SRussell King bool 1036e3887714SRussell King 10371da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 10381da177e4SLinus Torvalds 1039afe4b25eSLennert Buytenhekconfig IWMMXT 1040afe4b25eSLennert Buytenhek bool "Enable iWMMXt support" 1041ef6c8445SHaojian Zhuang depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 1042ef6c8445SHaojian Zhuang default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP 1043afe4b25eSLennert Buytenhek help 1044afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 1045afe4b25eSLennert Buytenhek running on a CPU that supports it. 1046afe4b25eSLennert Buytenhek 10471da177e4SLinus Torvalds# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 10481da177e4SLinus Torvaldsconfig XSCALE_PMU 10491da177e4SLinus Torvalds bool 10501da177e4SLinus Torvalds depends on CPU_XSCALE && !XSCALE_PMU_TIMER 10511da177e4SLinus Torvalds default y 10521da177e4SLinus Torvalds 10530f4f0672SJamie Ilesconfig CPU_HAS_PMU 10548954bb0dSWill Deacon depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \ 10558954bb0dSWill Deacon (!ARCH_OMAP3 || OMAP3_EMU) 10560f4f0672SJamie Iles default y 10570f4f0672SJamie Iles bool 10580f4f0672SJamie Iles 105952108641Seric miaoconfig MULTI_IRQ_HANDLER 106052108641Seric miao bool 106152108641Seric miao help 106252108641Seric miao Allow each machine to specify it's own IRQ handler at run time. 106352108641Seric miao 10643b93e7b0SHyok S. Choiif !MMU 10653b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 10663b93e7b0SHyok S. Choiendif 10673b93e7b0SHyok S. Choi 10689cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 10699cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 107081d11955STony Lindgren depends on CPU_V6 10719cba3cccSCatalin Marinas help 10729cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 10739cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 10749cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 10759cba3cccSCatalin Marinas recommended workaround. 10769cba3cccSCatalin Marinas 10777ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 10787ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 10797ce236fcSCatalin Marinas depends on CPU_V7 10807ce236fcSCatalin Marinas help 10817ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 10827ce236fcSCatalin Marinas (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 10837ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 10847ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 10857ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 10867ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 10877ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 10887ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 10897ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 10907ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 10917ce236fcSCatalin Marinas available in non-secure mode. 10927ce236fcSCatalin Marinas 1093855c551fSCatalin Marinasconfig ARM_ERRATA_458693 1094855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 1095855c551fSCatalin Marinas depends on CPU_V7 1096855c551fSCatalin Marinas help 1097855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 1098855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 1099855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 1100855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 1101855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 1102855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 1103855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 1104855c551fSCatalin Marinas register may not be available in non-secure mode. 1105855c551fSCatalin Marinas 11060516e464SCatalin Marinasconfig ARM_ERRATA_460075 11070516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 11080516e464SCatalin Marinas depends on CPU_V7 11090516e464SCatalin Marinas help 11100516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 11110516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 11120516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 11130516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 11140516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 11150516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 11160516e464SCatalin Marinas may not be available in non-secure mode. 11170516e464SCatalin Marinas 11189f05027cSWill Deaconconfig ARM_ERRATA_742230 11199f05027cSWill Deacon bool "ARM errata: DMB operation may be faulty" 11209f05027cSWill Deacon depends on CPU_V7 && SMP 11219f05027cSWill Deacon help 11229f05027cSWill Deacon This option enables the workaround for the 742230 Cortex-A9 11239f05027cSWill Deacon (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction 11249f05027cSWill Deacon between two write operations may not ensure the correct visibility 11259f05027cSWill Deacon ordering of the two writes. This workaround sets a specific bit in 11269f05027cSWill Deacon the diagnostic register of the Cortex-A9 which causes the DMB 11279f05027cSWill Deacon instruction to behave as a DSB, ensuring the correct behaviour of 11289f05027cSWill Deacon the two writes. 11299f05027cSWill Deacon 1130a672e99bSWill Deaconconfig ARM_ERRATA_742231 1131a672e99bSWill Deacon bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" 1132a672e99bSWill Deacon depends on CPU_V7 && SMP 1133a672e99bSWill Deacon help 1134a672e99bSWill Deacon This option enables the workaround for the 742231 Cortex-A9 1135a672e99bSWill Deacon (r2p0..r2p2) erratum. Under certain conditions, specific to the 1136a672e99bSWill Deacon Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode, 1137a672e99bSWill Deacon accessing some data located in the same cache line, may get corrupted 1138a672e99bSWill Deacon data due to bad handling of the address hazard when the line gets 1139a672e99bSWill Deacon replaced from one of the CPUs at the same time as another CPU is 1140a672e99bSWill Deacon accessing it. This workaround sets specific bits in the diagnostic 1141a672e99bSWill Deacon register of the Cortex-A9 which reduces the linefill issuing 1142a672e99bSWill Deacon capabilities of the processor. 1143a672e99bSWill Deacon 11449e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369 11459e65582aSSantosh Shilimkar bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 11469e65582aSSantosh Shilimkar depends on CACHE_L2X0 && ARCH_OMAP4 11479e65582aSSantosh Shilimkar help 11489e65582aSSantosh Shilimkar The PL310 L2 cache controller implements three types of Clean & 11499e65582aSSantosh Shilimkar Invalidate maintenance operations: by Physical Address 11509e65582aSSantosh Shilimkar (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 11519e65582aSSantosh Shilimkar They are architecturally defined to behave as the execution of a 11529e65582aSSantosh Shilimkar clean operation followed immediately by an invalidate operation, 11539e65582aSSantosh Shilimkar both performing to the same memory location. This functionality 11549e65582aSSantosh Shilimkar is not correctly implemented in PL310 as clean lines are not 11559e65582aSSantosh Shilimkar invalidated as a result of these operations. Note that this errata 11569e65582aSSantosh Shilimkar uses Texas Instrument's secure monitor api. 1157cdf357f1SWill Deacon 1158cdf357f1SWill Deaconconfig ARM_ERRATA_720789 1159cdf357f1SWill Deacon bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" 1160cdf357f1SWill Deacon depends on CPU_V7 && SMP 1161cdf357f1SWill Deacon help 1162cdf357f1SWill Deacon This option enables the workaround for the 720789 Cortex-A9 (prior to 1163cdf357f1SWill Deacon r2p0) erratum. A faulty ASID can be sent to the other CPUs for the 1164cdf357f1SWill Deacon broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. 1165cdf357f1SWill Deacon As a consequence of this erratum, some TLB entries which should be 1166cdf357f1SWill Deacon invalidated are not, resulting in an incoherency in the system page 1167cdf357f1SWill Deacon tables. The workaround changes the TLB flushing routines to invalidate 1168cdf357f1SWill Deacon entries regardless of the ASID. 1169475d92fcSWill Deacon 1170475d92fcSWill Deaconconfig ARM_ERRATA_743622 1171475d92fcSWill Deacon bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" 1172475d92fcSWill Deacon depends on CPU_V7 1173475d92fcSWill Deacon help 1174475d92fcSWill Deacon This option enables the workaround for the 743622 Cortex-A9 1175475d92fcSWill Deacon (r2p0..r2p2) erratum. Under very rare conditions, a faulty 1176475d92fcSWill Deacon optimisation in the Cortex-A9 Store Buffer may lead to data 1177475d92fcSWill Deacon corruption. This workaround sets a specific bit in the diagnostic 1178475d92fcSWill Deacon register of the Cortex-A9 which disables the Store Buffer 1179475d92fcSWill Deacon optimisation, preventing the defect from occurring. This has no 1180475d92fcSWill Deacon visible impact on the overall performance or power consumption of the 1181475d92fcSWill Deacon processor. 1182475d92fcSWill Deacon 11831da177e4SLinus Torvaldsendmenu 11841da177e4SLinus Torvalds 11851da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvaldsmenu "Bus support" 11881da177e4SLinus Torvalds 11891da177e4SLinus Torvaldsconfig ARM_AMBA 11901da177e4SLinus Torvalds bool 11911da177e4SLinus Torvalds 11921da177e4SLinus Torvaldsconfig ISA 11931da177e4SLinus Torvalds bool 11941da177e4SLinus Torvalds help 11951da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 11961da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 11971da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 11981da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 11991da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 12001da177e4SLinus Torvalds 1201065909b9SRussell King# Select ISA DMA controller support 12021da177e4SLinus Torvaldsconfig ISA_DMA 12031da177e4SLinus Torvalds bool 1204065909b9SRussell King select ISA_DMA_API 12051da177e4SLinus Torvalds 1206065909b9SRussell King# Select ISA DMA interface 12075cae841bSAl Viroconfig ISA_DMA_API 12085cae841bSAl Viro bool 12095cae841bSAl Viro 12101da177e4SLinus Torvaldsconfig PCI 12110b05da72SHans Ulli Kroll bool "PCI support" if MIGHT_HAVE_PCI 12121da177e4SLinus Torvalds help 12131da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 12141da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 12151da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 12161da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 12171da177e4SLinus Torvalds 121852882173SAnton Vorontsovconfig PCI_DOMAINS 121952882173SAnton Vorontsov bool 122052882173SAnton Vorontsov depends on PCI 122152882173SAnton Vorontsov 1222b080ac8aSMarcelo Roberto Jimenezconfig PCI_NANOENGINE 1223b080ac8aSMarcelo Roberto Jimenez bool "BSE nanoEngine PCI support" 1224b080ac8aSMarcelo Roberto Jimenez depends on SA1100_NANOENGINE 1225b080ac8aSMarcelo Roberto Jimenez help 1226b080ac8aSMarcelo Roberto Jimenez Enable PCI on the BSE nanoEngine board. 1227b080ac8aSMarcelo Roberto Jimenez 122836e23590SMatthew Wilcoxconfig PCI_SYSCALL 122936e23590SMatthew Wilcox def_bool PCI 123036e23590SMatthew Wilcox 12311da177e4SLinus Torvalds# Select the host bridge type 12321da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505 12331da177e4SLinus Torvalds bool 12341da177e4SLinus Torvalds depends on PCI && ARCH_SHARK 12351da177e4SLinus Torvalds default y 12361da177e4SLinus Torvalds 1237a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 1238a0113a99SMike Rapoport bool 1239a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 1240a0113a99SMike Rapoport default y 1241a0113a99SMike Rapoport select DMABOUNCE 1242a0113a99SMike Rapoport 12431da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 12461da177e4SLinus Torvalds 12471da177e4SLinus Torvaldsendmenu 12481da177e4SLinus Torvalds 12491da177e4SLinus Torvaldsmenu "Kernel Features" 12501da177e4SLinus Torvalds 12510567a0c0SKevin Hilmansource "kernel/time/Kconfig" 12520567a0c0SKevin Hilman 12531da177e4SLinus Torvaldsconfig SMP 12541da177e4SLinus Torvalds bool "Symmetric Multi-Processing (EXPERIMENTAL)" 1255971acb9bSRussell King depends on EXPERIMENTAL 1256bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 1257971acb9bSRussell King depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \ 1258971acb9bSRussell King MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \ 125989c3dedfSDaniel Walker ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \ 1260e9d728f5SPaul Mundt ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE 1261f6dd9fa5SJens Axboe select USE_GENERIC_SMP_HELPERS 126289c3dedfSDaniel Walker select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP 12631da177e4SLinus Torvalds help 12641da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 12651da177e4SLinus Torvalds a system with only one CPU, like most personal computers, say N. If 12661da177e4SLinus Torvalds you have a system with more than one CPU, say Y. 12671da177e4SLinus Torvalds 12681da177e4SLinus Torvalds If you say N here, the kernel will run on single and multiprocessor 12691da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 12701da177e4SLinus Torvalds you say Y here, the kernel will run on many, but not all, single 12711da177e4SLinus Torvalds processor machines. On a single processor machine, the kernel will 12721da177e4SLinus Torvalds run faster if you say N here. 12731da177e4SLinus Torvalds 127403502faaSAdrian Bunk See also <file:Documentation/i386/IO-APIC.txt>, 12751da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 127650a23e6eSJustin P. Mattock <http://tldp.org/HOWTO/SMP-HOWTO.html>. 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds If you don't know what to do here, say N. 12791da177e4SLinus Torvalds 1280f00ec48fSRussell Kingconfig SMP_ON_UP 1281f00ec48fSRussell King bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)" 1282f00ec48fSRussell King depends on EXPERIMENTAL 12834d2692a7SNicolas Pitre depends on SMP && !XIP_KERNEL 1284f00ec48fSRussell King default y 1285f00ec48fSRussell King help 1286f00ec48fSRussell King SMP kernels contain instructions which fail on non-SMP processors. 1287f00ec48fSRussell King Enabling this option allows the kernel to modify itself to make 1288f00ec48fSRussell King these instructions safe. Disabling it allows about 1K of space 1289f00ec48fSRussell King savings. 1290f00ec48fSRussell King 1291f00ec48fSRussell King If you don't know what to do here, say Y. 1292f00ec48fSRussell King 1293a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1294a8cbcd92SRussell King bool 1295a8cbcd92SRussell King depends on SMP 1296a8cbcd92SRussell King help 1297a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1298a8cbcd92SRussell King 1299f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1300f32f4ce2SRussell King bool 1301f32f4ce2SRussell King depends on SMP 130215095bb0SRussell King select TICK_ONESHOT 1303f32f4ce2SRussell King help 1304f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1305f32f4ce2SRussell King 13068d5796d2SLennert Buytenhekchoice 13078d5796d2SLennert Buytenhek prompt "Memory split" 13088d5796d2SLennert Buytenhek default VMSPLIT_3G 13098d5796d2SLennert Buytenhek help 13108d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 13118d5796d2SLennert Buytenhek 13128d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 13138d5796d2SLennert Buytenhek option alone! 13148d5796d2SLennert Buytenhek 13158d5796d2SLennert Buytenhek config VMSPLIT_3G 13168d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 13178d5796d2SLennert Buytenhek config VMSPLIT_2G 13188d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 13198d5796d2SLennert Buytenhek config VMSPLIT_1G 13208d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 13218d5796d2SLennert Buytenhekendchoice 13228d5796d2SLennert Buytenhek 13238d5796d2SLennert Buytenhekconfig PAGE_OFFSET 13248d5796d2SLennert Buytenhek hex 13258d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 13268d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 13278d5796d2SLennert Buytenhek default 0xC0000000 13288d5796d2SLennert Buytenhek 13291da177e4SLinus Torvaldsconfig NR_CPUS 13301da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 13311da177e4SLinus Torvalds range 2 32 13321da177e4SLinus Torvalds depends on SMP 13331da177e4SLinus Torvalds default "4" 13341da177e4SLinus Torvalds 1335a054a811SRussell Kingconfig HOTPLUG_CPU 1336a054a811SRussell King bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1337a054a811SRussell King depends on SMP && HOTPLUG && EXPERIMENTAL 1338176bfc44SDaniel Walker depends on !ARCH_MSM 1339a054a811SRussell King help 1340a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1341a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1342a054a811SRussell King 134337ee16aeSRussell Kingconfig LOCAL_TIMERS 134437ee16aeSRussell King bool "Use local timer interrupts" 1345971acb9bSRussell King depends on SMP 134637ee16aeSRussell King default y 134789c3dedfSDaniel Walker select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP 134837ee16aeSRussell King help 134937ee16aeSRussell King Enable support for local timers on SMP platforms, rather then the 135037ee16aeSRussell King legacy IPI broadcast method. Local timers allows the system 135137ee16aeSRussell King accounting to be spread across the timer interval, preventing a 135237ee16aeSRussell King "thundering herd" at every timer tick. 135337ee16aeSRussell King 1354d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 13551da177e4SLinus Torvalds 1356f8065813SRussell Kingconfig HZ 1357f8065813SRussell King int 135849b7a491SKukjin Kim default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \ 13592192482eSRussell King ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310 1360bfe65704SRussell King default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 13615248c657SDavid Brownell default AT91_TIMER_HZ if ARCH_AT91 13625da3e714SMagnus Damm default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE 1363f8065813SRussell King default 100 1364f8065813SRussell King 136516c79651SCatalin Marinasconfig THUMB2_KERNEL 13664a50bfe3SRussell King bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)" 13676e6fc998SDave Martin depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL 136816c79651SCatalin Marinas select AEABI 136916c79651SCatalin Marinas select ARM_ASM_UNIFIED 137016c79651SCatalin Marinas help 137116c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 137216c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 137316c79651SCatalin Marinas ARM-Thumb syntax is needed. 137416c79651SCatalin Marinas 137516c79651SCatalin Marinas If unsure, say N. 137616c79651SCatalin Marinas 13770becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 13780becb088SCatalin Marinas bool 13790becb088SCatalin Marinas 1380704bdda0SNicolas Pitreconfig AEABI 1381704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1382704bdda0SNicolas Pitre help 1383704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1384704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1385704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1386704bdda0SNicolas Pitre 1387704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1388704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1389704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1390704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1391704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1392704bdda0SNicolas Pitre 1393704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1394704bdda0SNicolas Pitre 13956c90c872SNicolas Pitreconfig OABI_COMPAT 1396a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 139761c484d4SNicolas Pitre depends on AEABI && EXPERIMENTAL 13986c90c872SNicolas Pitre default y 13996c90c872SNicolas Pitre help 14006c90c872SNicolas Pitre This option preserves the old syscall interface along with the 14016c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 14026c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 14036c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 14046c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 14056c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 14066c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 14076c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 14086c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 14096c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 14106c90c872SNicolas Pitre at all). If in doubt say Y. 14116c90c872SNicolas Pitre 1412eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1413e80d6a24SMel Gorman bool 1414e80d6a24SMel Gorman 141505944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 141605944d74SRussell King bool 141705944d74SRussell King 141807a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 141907a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 142007a2f737SRussell King 142105944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 1422be370302SRussell King def_bool ARCH_SPARSEMEM_ENABLE 1423c80d79d7SYasunori Goto 1424053a96caSNicolas Pitreconfig HIGHMEM 1425053a96caSNicolas Pitre bool "High Memory Support (EXPERIMENTAL)" 1426053a96caSNicolas Pitre depends on MMU && EXPERIMENTAL 1427053a96caSNicolas Pitre help 1428053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1429053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1430053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1431053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1432053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1433053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1434053a96caSNicolas Pitre 1435053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1436053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1437053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1438053a96caSNicolas Pitre 1439053a96caSNicolas Pitre If unsure, say n. 1440053a96caSNicolas Pitre 144165cec8e3SRussell Kingconfig HIGHPTE 144265cec8e3SRussell King bool "Allocate 2nd-level pagetables from highmem" 144365cec8e3SRussell King depends on HIGHMEM 144465cec8e3SRussell King depends on !OUTER_CACHE 144565cec8e3SRussell King 14461b8873a0SJamie Ilesconfig HW_PERF_EVENTS 14471b8873a0SJamie Iles bool "Enable hardware performance counter support for perf events" 1448fe166148SWill Deacon depends on PERF_EVENTS && CPU_HAS_PMU 14491b8873a0SJamie Iles default y 14501b8873a0SJamie Iles help 14511b8873a0SJamie Iles Enable hardware performance counter support for perf events. If 14521b8873a0SJamie Iles disabled, perf events will use software events only. 14531b8873a0SJamie Iles 14543f22ab27SDave Hansensource "mm/Kconfig" 14553f22ab27SDave Hansen 1456c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER 1457c1b2d970SMagnus Damm int "Maximum zone order" if ARCH_SHMOBILE 1458c1b2d970SMagnus Damm range 11 64 if ARCH_SHMOBILE 1459c1b2d970SMagnus Damm default "9" if SA1111 1460c1b2d970SMagnus Damm default "11" 1461c1b2d970SMagnus Damm help 1462c1b2d970SMagnus Damm The kernel memory allocator divides physically contiguous memory 1463c1b2d970SMagnus Damm blocks into "zones", where each zone is a power of two number of 1464c1b2d970SMagnus Damm pages. This option selects the largest power of two that the kernel 1465c1b2d970SMagnus Damm keeps in the memory allocator. If you need to allocate very large 1466c1b2d970SMagnus Damm blocks of physically contiguous memory, then you may need to 1467c1b2d970SMagnus Damm increase this value. 1468c1b2d970SMagnus Damm 1469c1b2d970SMagnus Damm This config option is actually maximum order plus one. For example, 1470c1b2d970SMagnus Damm a value of 11 means that the largest free memory block is 2^10 pages. 1471c1b2d970SMagnus Damm 14721da177e4SLinus Torvaldsconfig LEDS 14731da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1474e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 14758c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 14761da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 14771da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 147873a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 147925329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1480ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 14811da177e4SLinus Torvalds help 14821da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 14831da177e4SLinus Torvalds to provide useful information about your current system status. 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 14861da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 14871da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 14881da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 14891da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 14901da177e4SLinus Torvalds system, but the driver will do nothing. 14911da177e4SLinus Torvalds 14921da177e4SLinus Torvaldsconfig LEDS_TIMER 14931da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1494eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1495eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 14961da177e4SLinus Torvalds depends on LEDS 14970567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 14981da177e4SLinus Torvalds default y if ARCH_EBSA110 14991da177e4SLinus Torvalds help 15001da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 15011da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 15021da177e4SLinus Torvalds will flash regularly to indicate that the system is still 15031da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 15041da177e4SLinus Torvalds debugging unstable kernels. 15051da177e4SLinus Torvalds 15061da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 15071da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 15081da177e4SLinus Torvalds will overrule the CPU usage LED. 15091da177e4SLinus Torvalds 15101da177e4SLinus Torvaldsconfig LEDS_CPU 15111da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1512eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1513eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1514eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 15151da177e4SLinus Torvalds depends on LEDS 15161da177e4SLinus Torvalds help 15171da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 15181da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 15191da177e4SLinus Torvalds is not currently executing. 15201da177e4SLinus Torvalds 15211da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 15221da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 15231da177e4SLinus Torvalds will overrule the CPU usage LED. 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 15261da177e4SLinus Torvalds bool 1527f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 15281da177e4SLinus Torvalds default y if !ARCH_EBSA110 1529e119bfffSRussell King select HAVE_PROC_CPU if PROC_FS 15301da177e4SLinus Torvalds help 15311da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 15321da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 15331da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 15341da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 15351da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 15361da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 15371da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 15381da177e4SLinus Torvalds 153939ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 154039ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 154139ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 154239ec58f3SLennert Buytenhek default y if CPU_FEROCEON 154339ec58f3SLennert Buytenhek help 154439ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 154539ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 154639ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 154739ec58f3SLennert Buytenhek 154839ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 154939ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 155039ec58f3SLennert Buytenhek such copy operations with large buffers. 155139ec58f3SLennert Buytenhek 155239ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 155339ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 155439ec58f3SLennert Buytenhek 155570c70d97SNicolas Pitreconfig SECCOMP 155670c70d97SNicolas Pitre bool 155770c70d97SNicolas Pitre prompt "Enable seccomp to safely compute untrusted bytecode" 155870c70d97SNicolas Pitre ---help--- 155970c70d97SNicolas Pitre This kernel feature is useful for number crunching applications 156070c70d97SNicolas Pitre that may need to compute untrusted bytecode during their 156170c70d97SNicolas Pitre execution. By using pipes or other transports made available to 156270c70d97SNicolas Pitre the process as file descriptors supporting the read/write 156370c70d97SNicolas Pitre syscalls, it's possible to isolate those applications in 156470c70d97SNicolas Pitre their own address space using seccomp. Once seccomp is 156570c70d97SNicolas Pitre enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 156670c70d97SNicolas Pitre and the task is only allowed to execute a few safe syscalls 156770c70d97SNicolas Pitre defined by each seccomp mode. 156870c70d97SNicolas Pitre 1569c743f380SNicolas Pitreconfig CC_STACKPROTECTOR 1570c743f380SNicolas Pitre bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" 15714a50bfe3SRussell King depends on EXPERIMENTAL 1572c743f380SNicolas Pitre help 1573c743f380SNicolas Pitre This option turns on the -fstack-protector GCC feature. This 1574c743f380SNicolas Pitre feature puts, at the beginning of functions, a canary value on 1575c743f380SNicolas Pitre the stack just before the return address, and validates 1576c743f380SNicolas Pitre the value just before actually returning. Stack based buffer 1577c743f380SNicolas Pitre overflows (that need to overwrite this return address) now also 1578c743f380SNicolas Pitre overwrite the canary, which gets detected and the attack is then 1579c743f380SNicolas Pitre neutralized via a kernel panic. 1580c743f380SNicolas Pitre This feature requires gcc version 4.2 or above. 1581c743f380SNicolas Pitre 158273a65b3fSUwe Kleine-Königconfig DEPRECATED_PARAM_STRUCT 158373a65b3fSUwe Kleine-König bool "Provide old way to pass kernel parameters" 158473a65b3fSUwe Kleine-König help 158573a65b3fSUwe Kleine-König This was deprecated in 2001 and announced to live on for 5 years. 158673a65b3fSUwe Kleine-König Some old boot loaders still use this way. 158773a65b3fSUwe Kleine-König 15881da177e4SLinus Torvaldsendmenu 15891da177e4SLinus Torvalds 15901da177e4SLinus Torvaldsmenu "Boot options" 15911da177e4SLinus Torvalds 15921da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 15931da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 15941da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 15951da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 15961da177e4SLinus Torvalds default "0" 15971da177e4SLinus Torvalds help 15981da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 15991da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 16001da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 16011da177e4SLinus Torvalds value in their defconfig file. 16021da177e4SLinus Torvalds 16031da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 16041da177e4SLinus Torvalds 16051da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 16061da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 16071da177e4SLinus Torvalds default "0" 16081da177e4SLinus Torvalds help 1609f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1610f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1611f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1612f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1613f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1614f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 16151da177e4SLinus Torvalds 16161da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 16171da177e4SLinus Torvalds 16181da177e4SLinus Torvaldsconfig ZBOOT_ROM 16191da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 16201da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 16211da177e4SLinus Torvalds help 16221da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 16231da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 16241da177e4SLinus Torvalds 16251da177e4SLinus Torvaldsconfig CMDLINE 16261da177e4SLinus Torvalds string "Default kernel command string" 16271da177e4SLinus Torvalds default "" 16281da177e4SLinus Torvalds help 16291da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 16301da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 16311da177e4SLinus Torvalds architectures, you should supply some command-line options at build 16321da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 16331da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 16341da177e4SLinus Torvalds 163592d2040dSAlexander Hollerconfig CMDLINE_FORCE 163692d2040dSAlexander Holler bool "Always use the default kernel command string" 163792d2040dSAlexander Holler depends on CMDLINE != "" 163892d2040dSAlexander Holler help 163992d2040dSAlexander Holler Always use the default kernel command string, even if the boot 164092d2040dSAlexander Holler loader passes other arguments to the kernel. 164192d2040dSAlexander Holler This is useful if you cannot or don't want to change the 164292d2040dSAlexander Holler command-line options your boot loader passes to the kernel. 164392d2040dSAlexander Holler 164492d2040dSAlexander Holler If unsure, say N. 164592d2040dSAlexander Holler 16461da177e4SLinus Torvaldsconfig XIP_KERNEL 16471da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 16481da177e4SLinus Torvalds depends on !ZBOOT_ROM 16491da177e4SLinus Torvalds help 16501da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 16511da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 16521da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 16531da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 16541da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 16551da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 16561da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 16571da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 16581da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 16591da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 16601da177e4SLinus Torvalds 16611da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 16621da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 16631da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 16641da177e4SLinus Torvalds 16651da177e4SLinus Torvalds If unsure, say N. 16661da177e4SLinus Torvalds 16671da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 16681da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 16691da177e4SLinus Torvalds depends on XIP_KERNEL 16701da177e4SLinus Torvalds default "0x00080000" 16711da177e4SLinus Torvalds help 16721da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 16731da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 16741da177e4SLinus Torvalds own flash usage. 16751da177e4SLinus Torvalds 1676c587e4a6SRichard Purdieconfig KEXEC 1677c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 1678c587e4a6SRichard Purdie depends on EXPERIMENTAL 1679c587e4a6SRichard Purdie help 1680c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1681c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 168201dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1683c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1684c587e4a6SRichard Purdie 1685c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1686c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1687c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 1688c587e4a6SRichard Purdie support. 1689c587e4a6SRichard Purdie 16904cd9d6f7SRichard Purdieconfig ATAGS_PROC 16914cd9d6f7SRichard Purdie bool "Export atags in procfs" 1692b98d7291SUli Luckas depends on KEXEC 1693b98d7291SUli Luckas default y 16944cd9d6f7SRichard Purdie help 16954cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 16964cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 16974cd9d6f7SRichard Purdie 1698cb5d39b3SMika Westerbergconfig CRASH_DUMP 1699cb5d39b3SMika Westerberg bool "Build kdump crash kernel (EXPERIMENTAL)" 1700cb5d39b3SMika Westerberg depends on EXPERIMENTAL 1701cb5d39b3SMika Westerberg help 1702cb5d39b3SMika Westerberg Generate crash dump after being started by kexec. This should 1703cb5d39b3SMika Westerberg be normally only set in special crash dump kernels which are 1704cb5d39b3SMika Westerberg loaded in the main kernel with kexec-tools into a specially 1705cb5d39b3SMika Westerberg reserved region and then later executed after a crash by 1706cb5d39b3SMika Westerberg kdump/kexec. The crash dump kernel must be compiled to a 1707cb5d39b3SMika Westerberg memory address not used by the main kernel 1708cb5d39b3SMika Westerberg 1709cb5d39b3SMika Westerberg For more details see Documentation/kdump/kdump.txt 1710cb5d39b3SMika Westerberg 1711e69edc79SEric Miaoconfig AUTO_ZRELADDR 1712e69edc79SEric Miao bool "Auto calculation of the decompressed kernel image address" 1713e69edc79SEric Miao depends on !ZBOOT_ROM && !ARCH_U300 1714e69edc79SEric Miao help 1715e69edc79SEric Miao ZRELADDR is the physical address where the decompressed kernel 1716e69edc79SEric Miao image will be placed. If AUTO_ZRELADDR is selected, the address 1717e69edc79SEric Miao will be determined at run-time by masking the current IP with 1718e69edc79SEric Miao 0xf8000000. This assumes the zImage being placed in the first 128MB 1719e69edc79SEric Miao from start of memory. 1720e69edc79SEric Miao 17211da177e4SLinus Torvaldsendmenu 17221da177e4SLinus Torvalds 1723ac9d7efcSRussell Kingmenu "CPU Power Management" 17241da177e4SLinus Torvalds 172589c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 17261da177e4SLinus Torvalds 17271da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 17281da177e4SLinus Torvalds 172964f102b6SYong Shenconfig CPU_FREQ_IMX 173064f102b6SYong Shen tristate "CPUfreq driver for i.MX CPUs" 173164f102b6SYong Shen depends on ARCH_MXC && CPU_FREQ 173264f102b6SYong Shen help 173364f102b6SYong Shen This enables the CPUfreq driver for i.MX CPUs. 173464f102b6SYong Shen 17351da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 17361da177e4SLinus Torvalds bool 17371da177e4SLinus Torvalds 17381da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 17391da177e4SLinus Torvalds bool 17401da177e4SLinus Torvalds 17411da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 17421da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 17431da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 17441da177e4SLinus Torvalds default y 17451da177e4SLinus Torvalds help 17461da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 17471da177e4SLinus Torvalds 17481da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 17491da177e4SLinus Torvalds 17501da177e4SLinus Torvalds If in doubt, say Y. 17511da177e4SLinus Torvalds 17529e2697ffSRussell Kingconfig CPU_FREQ_PXA 17539e2697ffSRussell King bool 17549e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 17559e2697ffSRussell King default y 17569e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 17579e2697ffSRussell King 1758b3748dddSMark Brownconfig CPU_FREQ_S3C64XX 1759b3748dddSMark Brown bool "CPUfreq support for Samsung S3C64XX CPUs" 1760b3748dddSMark Brown depends on CPU_FREQ && CPU_S3C6410 1761b3748dddSMark Brown 17629d56c02aSBen Dooksconfig CPU_FREQ_S3C 17639d56c02aSBen Dooks bool 17649d56c02aSBen Dooks help 17659d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 17669d56c02aSBen Dooks 17679d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 17684a50bfe3SRussell King bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)" 17699d56c02aSBen Dooks depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 17709d56c02aSBen Dooks select CPU_FREQ_S3C 17719d56c02aSBen Dooks help 17729d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 17739d56c02aSBen Dooks of CPUs. 17749d56c02aSBen Dooks 17759d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 17769d56c02aSBen Dooks 17779d56c02aSBen Dooks If in doubt, say N. 17789d56c02aSBen Dooks 17799d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 17804a50bfe3SRussell King bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)" 17819d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 17829d56c02aSBen Dooks help 17839d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 17849d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 17859d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 17869d56c02aSBen Dooks 17879d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 17889d56c02aSBen Dooks be built which may increase the size of the kernel image. 17899d56c02aSBen Dooks 17909d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 17919d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 17929d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 17939d56c02aSBen Dooks help 17949d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 17959d56c02aSBen Dooks 17969d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 17979d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 17989d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 17999d56c02aSBen Dooks help 18009d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 18019d56c02aSBen Dooks 1802e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 1803e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 1804e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 1805e6d197a6SBen Dooks help 1806e6d197a6SBen Dooks Export status information via debugfs. 1807e6d197a6SBen Dooks 18081da177e4SLinus Torvaldsendif 18091da177e4SLinus Torvalds 1810ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 1811ac9d7efcSRussell King 1812ac9d7efcSRussell Kingendmenu 1813ac9d7efcSRussell King 18141da177e4SLinus Torvaldsmenu "Floating point emulation" 18151da177e4SLinus Torvalds 18161da177e4SLinus Torvaldscomment "At least one emulation must be selected" 18171da177e4SLinus Torvalds 18181da177e4SLinus Torvaldsconfig FPE_NWFPE 18191da177e4SLinus Torvalds bool "NWFPE math emulation" 1820593c252aSDave Martin depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL 18211da177e4SLinus Torvalds ---help--- 18221da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 18231da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 18241da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 18251da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 18261da177e4SLinus Torvalds 18271da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 18281da177e4SLinus Torvalds early in the bootup. 18291da177e4SLinus Torvalds 18301da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 18311da177e4SLinus Torvalds bool "Support extended precision" 1832bedf142bSLennert Buytenhek depends on FPE_NWFPE 18331da177e4SLinus Torvalds help 18341da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 18351da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 18361da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 18371da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 18381da177e4SLinus Torvalds floating point emulator without any good reason. 18391da177e4SLinus Torvalds 18401da177e4SLinus Torvalds You almost surely want to say N here. 18411da177e4SLinus Torvalds 18421da177e4SLinus Torvaldsconfig FPE_FASTFPE 18431da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 18448993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 18451da177e4SLinus Torvalds ---help--- 18461da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 18471da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 18481da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 18491da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 18501da177e4SLinus Torvalds 18511da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 18521da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 18531da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 18541da177e4SLinus Torvalds choose NWFPE. 18551da177e4SLinus Torvalds 18561da177e4SLinus Torvaldsconfig VFP 18571da177e4SLinus Torvalds bool "VFP-format floating point maths" 1858c00d4ffdSRussell King depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 18591da177e4SLinus Torvalds help 18601da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 18611da177e4SLinus Torvalds if your hardware includes a VFP unit. 18621da177e4SLinus Torvalds 18631da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 18641da177e4SLinus Torvalds release notes and additional status information. 18651da177e4SLinus Torvalds 18661da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 18671da177e4SLinus Torvalds 186825ebee02SCatalin Marinasconfig VFPv3 186925ebee02SCatalin Marinas bool 187025ebee02SCatalin Marinas depends on VFP 187125ebee02SCatalin Marinas default y if CPU_V7 187225ebee02SCatalin Marinas 1873b5872db4SCatalin Marinasconfig NEON 1874b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 1875b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 1876b5872db4SCatalin Marinas help 1877b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1878b5872db4SCatalin Marinas Extension. 1879b5872db4SCatalin Marinas 18801da177e4SLinus Torvaldsendmenu 18811da177e4SLinus Torvalds 18821da177e4SLinus Torvaldsmenu "Userspace binary formats" 18831da177e4SLinus Torvalds 18841da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 18851da177e4SLinus Torvalds 18861da177e4SLinus Torvaldsconfig ARTHUR 18871da177e4SLinus Torvalds tristate "RISC OS personality" 1888704bdda0SNicolas Pitre depends on !AEABI 18891da177e4SLinus Torvalds help 18901da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 18911da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 18921da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 18931da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 18941da177e4SLinus Torvalds will be called arthur). 18951da177e4SLinus Torvalds 18961da177e4SLinus Torvaldsendmenu 18971da177e4SLinus Torvalds 18981da177e4SLinus Torvaldsmenu "Power management options" 18991da177e4SLinus Torvalds 1900eceab4acSRussell Kingsource "kernel/power/Kconfig" 19011da177e4SLinus Torvalds 1902f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 1903f4cb5700SJohannes Berg def_bool y 1904f4cb5700SJohannes Berg 19051da177e4SLinus Torvaldsendmenu 19061da177e4SLinus Torvalds 1907d5950b43SSam Ravnborgsource "net/Kconfig" 1908d5950b43SSam Ravnborg 1909ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 19101da177e4SLinus Torvalds 19111da177e4SLinus Torvaldssource "fs/Kconfig" 19121da177e4SLinus Torvalds 19131da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 19141da177e4SLinus Torvalds 19151da177e4SLinus Torvaldssource "security/Kconfig" 19161da177e4SLinus Torvalds 19171da177e4SLinus Torvaldssource "crypto/Kconfig" 19181da177e4SLinus Torvalds 19191da177e4SLinus Torvaldssource "lib/Kconfig" 1920