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 244*3cb5ee49SRussell King select PLAT_VERSATILE_CLCD 245e3887714SRussell King select ARM_TIMER_SP804 246b56ba8aaSColin Tuckley select GPIO_PL061 if GPIOLIB 2474af6fee1SDeepak Saxena help 2484af6fee1SDeepak Saxena This enables support for ARM Ltd RealView boards. 2494af6fee1SDeepak Saxena 2504af6fee1SDeepak Saxenaconfig ARCH_VERSATILE 2514af6fee1SDeepak Saxena bool "ARM Ltd. Versatile family" 2524af6fee1SDeepak Saxena select ARM_AMBA 2534af6fee1SDeepak Saxena select ARM_VIC 2546d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 2551da0c89cSRussell King select HAVE_SCHED_CLOCK 256c5a0adb5SRussell King select ICST 25789df1272SKevin Hilman select GENERIC_CLOCKEVENTS 258bbeddc43SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 259f4b8b319SRussell King select PLAT_VERSATILE 2603414ba8cSRussell King select PLAT_VERSATILE_CLCD 261e3887714SRussell King select ARM_TIMER_SP804 2624af6fee1SDeepak Saxena help 2634af6fee1SDeepak Saxena This enables support for ARM Ltd Versatile board. 2644af6fee1SDeepak Saxena 265ceade897SRussell Kingconfig ARCH_VEXPRESS 266ceade897SRussell King bool "ARM Ltd. Versatile Express family" 267ceade897SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 268ceade897SRussell King select ARM_AMBA 269ceade897SRussell King select ARM_TIMER_SP804 2706d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 271ceade897SRussell King select GENERIC_CLOCKEVENTS 272ceade897SRussell King select HAVE_CLK 2730af85ddaSRussell King select HAVE_SCHED_CLOCK 27495c34f83SNick Bowler select HAVE_PATA_PLATFORM 275ceade897SRussell King select ICST 276ceade897SRussell King select PLAT_VERSATILE 277ceade897SRussell King help 278ceade897SRussell King This enables support for the ARM Ltd Versatile Express boards. 279ceade897SRussell King 2808fc5ffa0SAndrew Victorconfig ARCH_AT91 2818fc5ffa0SAndrew Victor bool "Atmel AT91" 282f373e8c0SRyan Mallon select ARCH_REQUIRE_GPIOLIB 28393686ae8SDavid Brownell select HAVE_CLK 2844af6fee1SDeepak Saxena help 2852b3b3516SAndrew Victor This enables support for systems based on the Atmel AT91RM9200, 2862b3b3516SAndrew Victor AT91SAM9 and AT91CAP9 processors. 2874af6fee1SDeepak Saxena 288ccf50e23SRussell Kingconfig ARCH_BCMRING 289ccf50e23SRussell King bool "Broadcom BCMRING" 290ccf50e23SRussell King depends on MMU 291ccf50e23SRussell King select CPU_V6 292ccf50e23SRussell King select ARM_AMBA 2936d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 294ccf50e23SRussell King select GENERIC_CLOCKEVENTS 295ccf50e23SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 296ccf50e23SRussell King help 297ccf50e23SRussell King Support for Broadcom's BCMRing platform. 298ccf50e23SRussell King 2991da177e4SLinus Torvaldsconfig ARCH_CLPS711X 3004af6fee1SDeepak Saxena bool "Cirrus Logic CLPS711x/EP721x-based" 301c750815eSRussell King select CPU_ARM720T 3025cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 303f999b8bdSMartin Michlmayr help 304f999b8bdSMartin Michlmayr Support for Cirrus Logic 711x/721x based boards. 3051da177e4SLinus Torvalds 306d94f944eSAnton Vorontsovconfig ARCH_CNS3XXX 307d94f944eSAnton Vorontsov bool "Cavium Networks CNS3XXX family" 308d94f944eSAnton Vorontsov select CPU_V6 309d94f944eSAnton Vorontsov select GENERIC_CLOCKEVENTS 310d94f944eSAnton Vorontsov select ARM_GIC 3110b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 3125f32f7a0SAnton Vorontsov select PCI_DOMAINS if PCI 313d94f944eSAnton Vorontsov help 314d94f944eSAnton Vorontsov Support for Cavium Networks CNS3XXX platform. 315d94f944eSAnton Vorontsov 316788c9700SRussell Kingconfig ARCH_GEMINI 317788c9700SRussell King bool "Cortina Systems Gemini" 318788c9700SRussell King select CPU_FA526 319788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 3205cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 321788c9700SRussell King help 322788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 323788c9700SRussell King 3241da177e4SLinus Torvaldsconfig ARCH_EBSA110 3251da177e4SLinus Torvalds bool "EBSA-110" 326c750815eSRussell King select CPU_SA110 327f7e68bbfSRussell King select ISA 328c5eb2a2bSRussell King select NO_IOPORT 3295cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 3301da177e4SLinus Torvalds help 3311da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 332f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 3331da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 3341da177e4SLinus Torvalds parallel port. 3351da177e4SLinus Torvalds 336e7736d47SLennert Buytenhekconfig ARCH_EP93XX 337e7736d47SLennert Buytenhek bool "EP93xx-based" 338c750815eSRussell King select CPU_ARM920T 339e7736d47SLennert Buytenhek select ARM_AMBA 340e7736d47SLennert Buytenhek select ARM_VIC 3416d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 3427444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 343eb33575cSMel Gorman select ARCH_HAS_HOLES_MEMORYMODEL 3445cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 345e7736d47SLennert Buytenhek help 346e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 347e7736d47SLennert Buytenhek 3481da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 3491da177e4SLinus Torvalds bool "FootBridge" 350c750815eSRussell King select CPU_SA110 3511da177e4SLinus Torvalds select FOOTBRIDGE 3525cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 353f999b8bdSMartin Michlmayr help 354f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 355f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 3561da177e4SLinus Torvalds 357788c9700SRussell Kingconfig ARCH_MXC 358788c9700SRussell King bool "Freescale MXC/iMX-based" 359788c9700SRussell King select GENERIC_CLOCKEVENTS 360788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 3616d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 362788c9700SRussell King help 363788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 364788c9700SRussell King 3651d3f33d5SShawn Guoconfig ARCH_MXS 3661d3f33d5SShawn Guo bool "Freescale MXS-based" 3671d3f33d5SShawn Guo select GENERIC_CLOCKEVENTS 3681d3f33d5SShawn Guo select ARCH_REQUIRE_GPIOLIB 369b9214b97SSascha Hauer select CLKDEV_LOOKUP 3701d3f33d5SShawn Guo help 3711d3f33d5SShawn Guo Support for Freescale MXS-based family of processors 3721d3f33d5SShawn Guo 3737bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX 3747bd0f2f5Sdmitry pervushin bool "Freescale STMP3xxx" 3757bd0f2f5Sdmitry pervushin select CPU_ARM926T 3766d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 3777bd0f2f5Sdmitry pervushin select ARCH_REQUIRE_GPIOLIB 3787bd0f2f5Sdmitry pervushin select GENERIC_CLOCKEVENTS 3797bd0f2f5Sdmitry pervushin select USB_ARCH_HAS_EHCI 3807bd0f2f5Sdmitry pervushin help 3817bd0f2f5Sdmitry pervushin Support for systems based on the Freescale 3xxx CPUs. 3827bd0f2f5Sdmitry pervushin 3834af6fee1SDeepak Saxenaconfig ARCH_NETX 3844af6fee1SDeepak Saxena bool "Hilscher NetX based" 385c750815eSRussell King select CPU_ARM926T 3864af6fee1SDeepak Saxena select ARM_VIC 3872fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 388f999b8bdSMartin Michlmayr help 3894af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 3904af6fee1SDeepak Saxena 3914af6fee1SDeepak Saxenaconfig ARCH_H720X 3924af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 393c750815eSRussell King select CPU_ARM720T 3944af6fee1SDeepak Saxena select ISA_DMA_API 3955cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 3964af6fee1SDeepak Saxena help 3974af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 3984af6fee1SDeepak Saxena 3993b938be6SRussell Kingconfig ARCH_IOP13XX 4003b938be6SRussell King bool "IOP13xx-based" 4013b938be6SRussell King depends on MMU 402c750815eSRussell King select CPU_XSC3 4033b938be6SRussell King select PLAT_IOP 4043b938be6SRussell King select PCI 4053b938be6SRussell King select ARCH_SUPPORTS_MSI 4068d5796d2SLennert Buytenhek select VMSPLIT_1G 4073b938be6SRussell King help 4083b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 4093b938be6SRussell King 4103f7e5815SLennert Buytenhekconfig ARCH_IOP32X 4113f7e5815SLennert Buytenhek bool "IOP32x-based" 412a4f7e763SRussell King depends on MMU 413c750815eSRussell King select CPU_XSCALE 4147ae1f7ecSLennert Buytenhek select PLAT_IOP 415f7e68bbfSRussell King select PCI 416bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 417f999b8bdSMartin Michlmayr help 4183f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 4193f7e5815SLennert Buytenhek processors. 4203f7e5815SLennert Buytenhek 4213f7e5815SLennert Buytenhekconfig ARCH_IOP33X 4223f7e5815SLennert Buytenhek bool "IOP33x-based" 4233f7e5815SLennert Buytenhek depends on MMU 424c750815eSRussell King select CPU_XSCALE 4257ae1f7ecSLennert Buytenhek select PLAT_IOP 4263f7e5815SLennert Buytenhek select PCI 427bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 4283f7e5815SLennert Buytenhek help 4293f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 4301da177e4SLinus Torvalds 4313b938be6SRussell Kingconfig ARCH_IXP23XX 4323b938be6SRussell King bool "IXP23XX-based" 433588ef769SDan Williams depends on MMU 434c750815eSRussell King select CPU_XSC3 435285f5fa7SDan Williams select PCI 4365cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 437285f5fa7SDan Williams help 4383b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 4391da177e4SLinus Torvalds 4401da177e4SLinus Torvaldsconfig ARCH_IXP2000 4411da177e4SLinus Torvalds bool "IXP2400/2800-based" 442a4f7e763SRussell King depends on MMU 443c750815eSRussell King select CPU_XSCALE 444f7e68bbfSRussell King select PCI 4455cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 446f999b8bdSMartin Michlmayr help 447f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 4481da177e4SLinus Torvalds 4493b938be6SRussell Kingconfig ARCH_IXP4XX 4503b938be6SRussell King bool "IXP4xx-based" 451a4f7e763SRussell King depends on MMU 452c750815eSRussell King select CPU_XSCALE 4538858e9afSMilan Svoboda select GENERIC_GPIO 4543b938be6SRussell King select GENERIC_CLOCKEVENTS 4555b0d495cSRussell King select HAVE_SCHED_CLOCK 4560b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 457485bdde7SRussell King select DMABOUNCE if PCI 458c4713074SLennert Buytenhek help 4593b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 460c4713074SLennert Buytenhek 461edabd38eSSaeed Bisharaconfig ARCH_DOVE 462edabd38eSSaeed Bishara bool "Marvell Dove" 463edabd38eSSaeed Bishara select PCI 464edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 465edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 466edabd38eSSaeed Bishara select PLAT_ORION 467edabd38eSSaeed Bishara help 468edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 469edabd38eSSaeed Bishara 470651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 471651c74c7SSaeed Bishara bool "Marvell Kirkwood" 472c750815eSRussell King select CPU_FEROCEON 473651c74c7SSaeed Bishara select PCI 474a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 475651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 476651c74c7SSaeed Bishara select PLAT_ORION 477651c74c7SSaeed Bishara help 478651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 479651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 480651c74c7SSaeed Bishara 481788c9700SRussell Kingconfig ARCH_LOKI 482788c9700SRussell King bool "Marvell Loki (88RC8480)" 483788c9700SRussell King select CPU_FEROCEON 484788c9700SRussell King select GENERIC_CLOCKEVENTS 485788c9700SRussell King select PLAT_ORION 486788c9700SRussell King help 487788c9700SRussell King Support for the Marvell Loki (88RC8480) SoC. 488788c9700SRussell King 48940805949SKevin Wellsconfig ARCH_LPC32XX 49040805949SKevin Wells bool "NXP LPC32XX" 49140805949SKevin Wells select CPU_ARM926T 49240805949SKevin Wells select ARCH_REQUIRE_GPIOLIB 49340805949SKevin Wells select HAVE_IDE 49440805949SKevin Wells select ARM_AMBA 49540805949SKevin Wells select USB_ARCH_HAS_OHCI 4966d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 49740805949SKevin Wells select GENERIC_TIME 49840805949SKevin Wells select GENERIC_CLOCKEVENTS 49940805949SKevin Wells help 50040805949SKevin Wells Support for the NXP LPC32XX family of processors 50140805949SKevin Wells 502788c9700SRussell Kingconfig ARCH_MV78XX0 503788c9700SRussell King bool "Marvell MV78xx0" 504788c9700SRussell King select CPU_FEROCEON 505788c9700SRussell King select PCI 506a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 507788c9700SRussell King select GENERIC_CLOCKEVENTS 508788c9700SRussell King select PLAT_ORION 509788c9700SRussell King help 510788c9700SRussell King Support for the following Marvell MV78xx0 series SoCs: 511788c9700SRussell King MV781x0, MV782x0. 512788c9700SRussell King 513788c9700SRussell Kingconfig ARCH_ORION5X 514788c9700SRussell King bool "Marvell Orion" 515788c9700SRussell King depends on MMU 516788c9700SRussell King select CPU_FEROCEON 517788c9700SRussell King select PCI 518a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 519788c9700SRussell King select GENERIC_CLOCKEVENTS 520788c9700SRussell King select PLAT_ORION 521788c9700SRussell King help 522788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 523788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 524788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 525788c9700SRussell King 526788c9700SRussell Kingconfig ARCH_MMP 5272f7e8faeSHaojian Zhuang bool "Marvell PXA168/910/MMP2" 528788c9700SRussell King depends on MMU 529788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 5306d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 531788c9700SRussell King select GENERIC_CLOCKEVENTS 53228bb7bc6SRussell King select HAVE_SCHED_CLOCK 533788c9700SRussell King select TICK_ONESHOT 534788c9700SRussell King select PLAT_PXA 5350bd86961SHaojian Zhuang select SPARSE_IRQ 536788c9700SRussell King help 5372f7e8faeSHaojian Zhuang Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 538788c9700SRussell King 539c53c9cf6SAndrew Victorconfig ARCH_KS8695 540c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 541c750815eSRussell King select CPU_ARM922T 54272880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 5435cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 544c53c9cf6SAndrew Victor help 545c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 546c53c9cf6SAndrew Victor System-on-Chip devices. 547c53c9cf6SAndrew Victor 5489918cda5SUwe Kleine-Königconfig ARCH_NS9XXX 5499918cda5SUwe Kleine-König bool "NetSilicon NS9xxx" 550c750815eSRussell King select CPU_ARM926T 551689f2a01SUwe Kleine-König select GENERIC_GPIO 552c0bb87f7SUwe Kleine-König select GENERIC_CLOCKEVENTS 5539483a578SDavid Brownell select HAVE_CLK 5549918cda5SUwe Kleine-König help 5559918cda5SUwe Kleine-König Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 5569918cda5SUwe Kleine-König System. 5579918cda5SUwe Kleine-König 5589918cda5SUwe Kleine-König <http://www.digi.com/products/microprocessors/index.jsp> 5599918cda5SUwe Kleine-König 560788c9700SRussell Kingconfig ARCH_W90X900 561788c9700SRussell King bool "Nuvoton W90X900 CPU" 562788c9700SRussell King select CPU_ARM926T 563c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 5646d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 56558b5369eSwanzongshun select GENERIC_CLOCKEVENTS 566777f9bebSLennert Buytenhek help 567a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 568a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 569a8bc4eadSwanzongshun the ARM series product line, you can login the following 570a8bc4eadSwanzongshun link address to know more. 571a8bc4eadSwanzongshun 572a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 573a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 574585cf175STzachi Perelstein 575a62e9030Swanzongshunconfig ARCH_NUC93X 576a62e9030Swanzongshun bool "Nuvoton NUC93X CPU" 577a62e9030Swanzongshun select CPU_ARM926T 5786d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 579a62e9030Swanzongshun help 580a62e9030Swanzongshun Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 581a62e9030Swanzongshun low-power and high performance MPEG-4/JPEG multimedia controller chip. 582a62e9030Swanzongshun 583c5f80065SErik Gillingconfig ARCH_TEGRA 584c5f80065SErik Gilling bool "NVIDIA Tegra" 5854073723aSRussell King select CLKDEV_LOOKUP 586c5f80065SErik Gilling select GENERIC_TIME 587c5f80065SErik Gilling select GENERIC_CLOCKEVENTS 588c5f80065SErik Gilling select GENERIC_GPIO 589c5f80065SErik Gilling select HAVE_CLK 590e3f4c0abSRussell King select HAVE_SCHED_CLOCK 591c5f80065SErik Gilling select ARCH_HAS_BARRIERS if CACHE_L2X0 5927056d423SColin Cross select ARCH_HAS_CPUFREQ 593c5f80065SErik Gilling help 594c5f80065SErik Gilling This enables support for NVIDIA Tegra based systems (Tegra APX, 595c5f80065SErik Gilling Tegra 6xx and Tegra 2 series). 596c5f80065SErik Gilling 5974af6fee1SDeepak Saxenaconfig ARCH_PNX4008 5984af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 599c750815eSRussell King select CPU_ARM926T 6006d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 6015cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 6024af6fee1SDeepak Saxena help 6034af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 6044af6fee1SDeepak Saxena 6051da177e4SLinus Torvaldsconfig ARCH_PXA 6062c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 607a4f7e763SRussell King depends on MMU 608034d2f5aSAl Viro select ARCH_MTD_XIP 60989c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6106d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 6117444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 612981d0f39SEric Miao select GENERIC_CLOCKEVENTS 6137ce83018SRussell King select HAVE_SCHED_CLOCK 614a88264c2SRussell King select TICK_ONESHOT 615bd5ce433SEric Miao select PLAT_PXA 6166ac6b817SHaojian Zhuang select SPARSE_IRQ 617f999b8bdSMartin Michlmayr help 6182c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 6191da177e4SLinus Torvalds 620788c9700SRussell Kingconfig ARCH_MSM 621788c9700SRussell King bool "Qualcomm MSM" 6224b536b8dSSteve Muckle select HAVE_CLK 62349cbe786SEric Miao select GENERIC_CLOCKEVENTS 624923a081cSPavel Machek select ARCH_REQUIRE_GPIOLIB 62549cbe786SEric Miao help 6264b53eb4fSDaniel Walker Support for Qualcomm MSM/QSD based systems. This runs on the 6274b53eb4fSDaniel Walker apps processor of the MSM/QSD and depends on a shared memory 6284b53eb4fSDaniel Walker interface to the modem processor which runs the baseband 6294b53eb4fSDaniel Walker stack and controls some vital subsystems 6304b53eb4fSDaniel Walker (clock and power control, etc). 63149cbe786SEric Miao 632c793c1b0SMagnus Dammconfig ARCH_SHMOBILE 6336d72ad35SPaul Mundt bool "Renesas SH-Mobile / R-Mobile" 6346d72ad35SPaul Mundt select HAVE_CLK 6355e93c6b4SPaul Mundt select CLKDEV_LOOKUP 6366d72ad35SPaul Mundt select GENERIC_CLOCKEVENTS 6376d72ad35SPaul Mundt select NO_IOPORT 6386d72ad35SPaul Mundt select SPARSE_IRQ 63960f1435cSMagnus Damm select MULTI_IRQ_HANDLER 640c793c1b0SMagnus Damm help 6416d72ad35SPaul Mundt Support for Renesas's SH-Mobile and R-Mobile ARM platforms. 642c793c1b0SMagnus Damm 6431da177e4SLinus Torvaldsconfig ARCH_RPC 6441da177e4SLinus Torvalds bool "RiscPC" 6451da177e4SLinus Torvalds select ARCH_ACORN 6461da177e4SLinus Torvalds select FIQ 6471da177e4SLinus Torvalds select TIMER_ACORN 648a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 649341eb781SBen Dooks select HAVE_PATA_PLATFORM 650065909b9SRussell King select ISA_DMA_API 6515ea81769SAl Viro select NO_IOPORT 65207f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 6535cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 6541da177e4SLinus Torvalds help 6551da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 6561da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 6571da177e4SLinus Torvalds 6581da177e4SLinus Torvaldsconfig ARCH_SA1100 6591da177e4SLinus Torvalds bool "SA1100-based" 660c750815eSRussell King select CPU_SA1100 661f7e68bbfSRussell King select ISA 66205944d74SRussell King select ARCH_SPARSEMEM_ENABLE 663034d2f5aSAl Viro select ARCH_MTD_XIP 66489c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6651937f5b9SRussell King select CPU_FREQ 6663e238be2SRussell King select GENERIC_CLOCKEVENTS 6679483a578SDavid Brownell select HAVE_CLK 6685094b92fSRussell King select HAVE_SCHED_CLOCK 6693e238be2SRussell King select TICK_ONESHOT 6707444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 671f999b8bdSMartin Michlmayr help 672f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 6731da177e4SLinus Torvalds 6741da177e4SLinus Torvaldsconfig ARCH_S3C2410 67563b1f51bSBen Dooks bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450" 6760a938b97SDavid Brownell select GENERIC_GPIO 6779d56c02aSBen Dooks select ARCH_HAS_CPUFREQ 6789483a578SDavid Brownell select HAVE_CLK 6795cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 68020676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 6811da177e4SLinus Torvalds help 6821da177e4SLinus Torvalds Samsung S3C2410X CPU based systems, such as the Simtec Electronics 6831da177e4SLinus Torvalds BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 684f6c8965aSMartin Michlmayr the Samsung SMDK2410 development board (and derivatives). 6851da177e4SLinus Torvalds 68663b1f51bSBen Dooks Note, the S3C2416 and the S3C2450 are so close that they even share 68763b1f51bSBen Dooks the same SoC ID code. This means that there is no seperate machine 68863b1f51bSBen Dooks directory (no arch/arm/mach-s3c2450) as the S3C2416 was first. 68963b1f51bSBen Dooks 690a08ab637SBen Dooksconfig ARCH_S3C64XX 691a08ab637SBen Dooks bool "Samsung S3C64XX" 69289f1fa08SBen Dooks select PLAT_SAMSUNG 69389f0ce72SBen Dooks select CPU_V6 69489f0ce72SBen Dooks select ARM_VIC 695a08ab637SBen Dooks select HAVE_CLK 69689f0ce72SBen Dooks select NO_IOPORT 6975cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 69889c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 69989f0ce72SBen Dooks select ARCH_REQUIRE_GPIOLIB 70089f0ce72SBen Dooks select SAMSUNG_CLKSRC 70189f0ce72SBen Dooks select SAMSUNG_IRQ_VIC_TIMER 70289f0ce72SBen Dooks select SAMSUNG_IRQ_UART 70389f0ce72SBen Dooks select S3C_GPIO_TRACK 70489f0ce72SBen Dooks select S3C_GPIO_PULL_UPDOWN 70589f0ce72SBen Dooks select S3C_GPIO_CFG_S3C24XX 70689f0ce72SBen Dooks select S3C_GPIO_CFG_S3C64XX 70789f0ce72SBen Dooks select S3C_DEV_NAND 70889f0ce72SBen Dooks select USB_ARCH_HAS_OHCI 70989f0ce72SBen Dooks select SAMSUNG_GPIOLIB_4BIT 71020676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 711c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 712a08ab637SBen Dooks help 713a08ab637SBen Dooks Samsung S3C64XX series based systems 714a08ab637SBen Dooks 71549b7a491SKukjin Kimconfig ARCH_S5P64X0 71649b7a491SKukjin Kim bool "Samsung S5P6440 S5P6450" 717c4ffccddSKukjin Kim select CPU_V6 718c4ffccddSKukjin Kim select GENERIC_GPIO 719c4ffccddSKukjin Kim select HAVE_CLK 720c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 721925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 72220676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 723754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 724c4ffccddSKukjin Kim help 72549b7a491SKukjin Kim Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440, 72649b7a491SKukjin Kim SMDK6450. 727c4ffccddSKukjin Kim 728550db7f1SKukjin Kimconfig ARCH_S5P6442 729550db7f1SKukjin Kim bool "Samsung S5P6442" 730550db7f1SKukjin Kim select CPU_V6 731550db7f1SKukjin Kim select GENERIC_GPIO 732550db7f1SKukjin Kim select HAVE_CLK 733925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 734c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 735550db7f1SKukjin Kim help 736550db7f1SKukjin Kim Samsung S5P6442 CPU based systems 737550db7f1SKukjin Kim 738acc84707SMarek Szyprowskiconfig ARCH_S5PC100 739acc84707SMarek Szyprowski bool "Samsung S5PC100" 7405a7652f2SByungho Min select GENERIC_GPIO 7415a7652f2SByungho Min select HAVE_CLK 7425a7652f2SByungho Min select CPU_V7 743d6d502faSKukjin Kim select ARM_L1_CACHE_SHIFT_6 744925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 74520676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 746754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 747c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 7485a7652f2SByungho Min help 749acc84707SMarek Szyprowski Samsung S5PC100 series based systems 7505a7652f2SByungho Min 751170f4e42SKukjin Kimconfig ARCH_S5PV210 752170f4e42SKukjin Kim bool "Samsung S5PV210/S5PC110" 753170f4e42SKukjin Kim select CPU_V7 754eecb6a84SKyungmin Park select ARCH_SPARSEMEM_ENABLE 755170f4e42SKukjin Kim select GENERIC_GPIO 756170f4e42SKukjin Kim select HAVE_CLK 757170f4e42SKukjin Kim select ARM_L1_CACHE_SHIFT_6 758d8144aeaSJaecheol Lee select ARCH_HAS_CPUFREQ 759925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 76020676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 761754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 762c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 763170f4e42SKukjin Kim help 764170f4e42SKukjin Kim Samsung S5PV210/S5PC110 series based systems 765170f4e42SKukjin Kim 766cc0e72b8SChanghwan Younconfig ARCH_S5PV310 767cc0e72b8SChanghwan Youn bool "Samsung S5PV310/S5PC210" 768cc0e72b8SChanghwan Youn select CPU_V7 769f567fa6fSKyungmin Park select ARCH_SPARSEMEM_ENABLE 770cc0e72b8SChanghwan Youn select GENERIC_GPIO 771cc0e72b8SChanghwan Youn select HAVE_CLK 772b333fb16SSunyoung Kang select ARCH_HAS_CPUFREQ 773cc0e72b8SChanghwan Youn select GENERIC_CLOCKEVENTS 774754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 77520676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 776c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 777cc0e72b8SChanghwan Youn help 778cc0e72b8SChanghwan Youn Samsung S5PV310 series based systems 779cc0e72b8SChanghwan Youn 7801da177e4SLinus Torvaldsconfig ARCH_SHARK 7811da177e4SLinus Torvalds bool "Shark" 782c750815eSRussell King select CPU_SA110 783f7e68bbfSRussell King select ISA 784f7e68bbfSRussell King select ISA_DMA 7853bca103aSNicolas Pitre select ZONE_DMA 786f7e68bbfSRussell King select PCI 7875cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 788f999b8bdSMartin Michlmayr help 789f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 790f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 7911da177e4SLinus Torvalds 79283ef3338SHans J. Kochconfig ARCH_TCC_926 79383ef3338SHans J. Koch bool "Telechips TCC ARM926-based systems" 79483ef3338SHans J. Koch select CPU_ARM926T 79583ef3338SHans J. Koch select HAVE_CLK 7966d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 79783ef3338SHans J. Koch select GENERIC_CLOCKEVENTS 79883ef3338SHans J. Koch help 79983ef3338SHans J. Koch Support for Telechips TCC ARM926-based systems. 80083ef3338SHans J. Koch 8011da177e4SLinus Torvaldsconfig ARCH_LH7A40X 8021da177e4SLinus Torvalds bool "Sharp LH7A40X" 803c750815eSRussell King select CPU_ARM922T 8044ba3f7c5SRussell King select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 8055cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 8061da177e4SLinus Torvalds help 8071da177e4SLinus Torvalds Say Y here for systems based on one of the Sharp LH7A40X 8081da177e4SLinus Torvalds System on a Chip processors. These CPUs include an ARM922T 8091da177e4SLinus Torvalds core with a wide array of integrated devices for 8101da177e4SLinus Torvalds hand-held and low-power applications. 8111da177e4SLinus Torvalds 812d98aac75SLinus Walleijconfig ARCH_U300 813d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 814d98aac75SLinus Walleij depends on MMU 815d98aac75SLinus Walleij select CPU_ARM926T 8165c21b7caSRussell King select HAVE_SCHED_CLOCK 817bc581770SLinus Walleij select HAVE_TCM 818d98aac75SLinus Walleij select ARM_AMBA 819d98aac75SLinus Walleij select ARM_VIC 820d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 8216d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 822d98aac75SLinus Walleij select GENERIC_GPIO 823d98aac75SLinus Walleij help 824d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 825d98aac75SLinus Walleij 826ccf50e23SRussell Kingconfig ARCH_U8500 827ccf50e23SRussell King bool "ST-Ericsson U8500 Series" 828ccf50e23SRussell King select CPU_V7 829ccf50e23SRussell King select ARM_AMBA 830ccf50e23SRussell King select GENERIC_CLOCKEVENTS 8316d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 83294bdc0e2SRabin Vincent select ARCH_REQUIRE_GPIOLIB 8337c1a70e9SMartin Persson select ARCH_HAS_CPUFREQ 834ccf50e23SRussell King help 835ccf50e23SRussell King Support for ST-Ericsson's Ux500 architecture 836ccf50e23SRussell King 837ccf50e23SRussell Kingconfig ARCH_NOMADIK 838ccf50e23SRussell King bool "STMicroelectronics Nomadik" 839ccf50e23SRussell King select ARM_AMBA 840ccf50e23SRussell King select ARM_VIC 841ccf50e23SRussell King select CPU_ARM926T 8426d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 843ccf50e23SRussell King select GENERIC_CLOCKEVENTS 844ccf50e23SRussell King select ARCH_REQUIRE_GPIOLIB 845ccf50e23SRussell King help 846ccf50e23SRussell King Support for the Nomadik platform by ST-Ericsson 847ccf50e23SRussell King 8487c6337e2SKevin Hilmanconfig ARCH_DAVINCI 8497c6337e2SKevin Hilman bool "TI DaVinci" 8507c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 851dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 8523bca103aSNicolas Pitre select ZONE_DMA 8539232fcc9SKevin Hilman select HAVE_IDE 8546d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 85520e9969bSDavid Brownell select GENERIC_ALLOCATOR 856ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 8577c6337e2SKevin Hilman help 8587c6337e2SKevin Hilman Support for TI's DaVinci platform. 8597c6337e2SKevin Hilman 8603b938be6SRussell Kingconfig ARCH_OMAP 8613b938be6SRussell King bool "TI OMAP" 8629483a578SDavid Brownell select HAVE_CLK 8637444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 86489c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 86506cad098SKevin Hilman select GENERIC_CLOCKEVENTS 866dc548fbbSRussell King select HAVE_SCHED_CLOCK 8679af915daSSriram select ARCH_HAS_HOLES_MEMORYMODEL 8683b938be6SRussell King help 8696e457bb0SLennert Buytenhek Support for TI's OMAP platform (OMAP1/2/3/4). 8703b938be6SRussell King 871cee37e50Sviresh kumarconfig PLAT_SPEAR 872cee37e50Sviresh kumar bool "ST SPEAr" 873cee37e50Sviresh kumar select ARM_AMBA 874cee37e50Sviresh kumar select ARCH_REQUIRE_GPIOLIB 8756d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 876cee37e50Sviresh kumar select GENERIC_CLOCKEVENTS 877cee37e50Sviresh kumar select HAVE_CLK 878cee37e50Sviresh kumar help 879cee37e50Sviresh kumar Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). 880cee37e50Sviresh kumar 8811da177e4SLinus Torvaldsendchoice 8821da177e4SLinus Torvalds 883ccf50e23SRussell King# 884ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname. However, plat-* 885ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the 886ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source. 887ccf50e23SRussell King# 88895b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig" 88995b8f20fSRussell King 89095b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig" 89195b8f20fSRussell King 89295b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig" 89395b8f20fSRussell King 8941da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 8951da177e4SLinus Torvalds 896d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig" 897d94f944eSAnton Vorontsov 89895b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig" 89995b8f20fSRussell King 90095b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig" 90195b8f20fSRussell King 902e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 903e7736d47SLennert Buytenhek 9041da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 9051da177e4SLinus Torvalds 90659d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 90759d3a193SPaulius Zaleckas 90895b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig" 90995b8f20fSRussell King 9101da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 9111da177e4SLinus Torvalds 9123f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 9133f7e5815SLennert Buytenhek 9143f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 9151da177e4SLinus Torvalds 916285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 917285f5fa7SDan Williams 9181da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 9191da177e4SLinus Torvalds 9201da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 9211da177e4SLinus Torvalds 922c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 923c4713074SLennert Buytenhek 92495b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig" 92595b8f20fSRussell King 92695b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig" 92795b8f20fSRussell King 92895b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig" 92995b8f20fSRussell King 930777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig" 931777f9bebSLennert Buytenhek 93240805949SKevin Wellssource "arch/arm/mach-lpc32xx/Kconfig" 93340805949SKevin Wells 93495b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig" 93595b8f20fSRussell King 936794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 937794d15b2SStanislav Samsonov 93895b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig" 9391da177e4SLinus Torvalds 9401d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig" 9411d3f33d5SShawn Guo 94295b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig" 94349cbe786SEric Miao 94495b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig" 94595b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig" 94695b8f20fSRussell King 94795b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig" 9481da177e4SLinus Torvalds 949d91a8910SRussell Kingsource "arch/arm/mach-nuc93x/Kconfig" 950d91a8910SRussell King 951d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 952d48af15eSTony Lindgren 953d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 9541da177e4SLinus Torvalds 9551dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 9561dbae815STony Lindgren 9579dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 958585cf175STzachi Perelstein 95995b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig" 96095b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig" 9611da177e4SLinus Torvalds 96295b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig" 96395b8f20fSRussell King 96495b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig" 96595b8f20fSRussell King 96695b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig" 967edabd38eSSaeed Bishara 968cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 969a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 970c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig" 971a21765a7SBen Dooks 972cee37e50Sviresh kumarsource "arch/arm/plat-spear/Kconfig" 973a21765a7SBen Dooks 97483ef3338SHans J. Kochsource "arch/arm/plat-tcc/Kconfig" 97583ef3338SHans J. Koch 976a21765a7SBen Dooksif ARCH_S3C2410 977a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig" 9781da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig" 979a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 980f1290a49SYauhen Kharuzhysource "arch/arm/mach-s3c2416/Kconfig" 981a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 982e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig" 983a21765a7SBen Dooksendif 9841da177e4SLinus Torvalds 985a08ab637SBen Dooksif ARCH_S3C64XX 986431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig" 987a08ab637SBen Dooksendif 988a08ab637SBen Dooks 98949b7a491SKukjin Kimsource "arch/arm/mach-s5p64x0/Kconfig" 990c4ffccddSKukjin Kim 991550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig" 9927bd0f2f5Sdmitry pervushin 9935a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 9945a7652f2SByungho Min 995170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig" 996170f4e42SKukjin Kim 997cc0e72b8SChanghwan Younsource "arch/arm/mach-s5pv310/Kconfig" 998cc0e72b8SChanghwan Youn 999882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig" 10001da177e4SLinus Torvalds 1001882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig" 10029e73c84cSBrian Swetland 1003c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig" 1004c5f80065SErik Gilling 100595b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig" 100652c543f9SQuinn Jensen 100795b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig" 10081da177e4SLinus Torvalds 10091da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 10101da177e4SLinus Torvalds 1011ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig" 1012420c34e4SRussell Kingsource "arch/arm/plat-versatile/Kconfig" 1013ceade897SRussell King 10147ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 10157ec80ddfSwanzongshun 10161da177e4SLinus Torvalds# Definitions to make life easier 10171da177e4SLinus Torvaldsconfig ARCH_ACORN 10181da177e4SLinus Torvalds bool 10191da177e4SLinus Torvalds 10207ae1f7ecSLennert Buytenhekconfig PLAT_IOP 10217ae1f7ecSLennert Buytenhek bool 1022469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 102308f26b1eSRussell King select HAVE_SCHED_CLOCK 10247ae1f7ecSLennert Buytenhek 102569b02f6aSLennert Buytenhekconfig PLAT_ORION 102669b02f6aSLennert Buytenhek bool 1027f06a1624SRussell King select HAVE_SCHED_CLOCK 102869b02f6aSLennert Buytenhek 1029bd5ce433SEric Miaoconfig PLAT_PXA 1030bd5ce433SEric Miao bool 1031bd5ce433SEric Miao 1032f4b8b319SRussell Kingconfig PLAT_VERSATILE 1033f4b8b319SRussell King bool 1034f4b8b319SRussell King 1035e3887714SRussell Kingconfig ARM_TIMER_SP804 1036e3887714SRussell King bool 1037e3887714SRussell King 10381da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 10391da177e4SLinus Torvalds 1040afe4b25eSLennert Buytenhekconfig IWMMXT 1041afe4b25eSLennert Buytenhek bool "Enable iWMMXt support" 1042ef6c8445SHaojian Zhuang depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 1043ef6c8445SHaojian Zhuang default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP 1044afe4b25eSLennert Buytenhek help 1045afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 1046afe4b25eSLennert Buytenhek running on a CPU that supports it. 1047afe4b25eSLennert Buytenhek 10481da177e4SLinus Torvalds# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 10491da177e4SLinus Torvaldsconfig XSCALE_PMU 10501da177e4SLinus Torvalds bool 10511da177e4SLinus Torvalds depends on CPU_XSCALE && !XSCALE_PMU_TIMER 10521da177e4SLinus Torvalds default y 10531da177e4SLinus Torvalds 10540f4f0672SJamie Ilesconfig CPU_HAS_PMU 10558954bb0dSWill Deacon depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \ 10568954bb0dSWill Deacon (!ARCH_OMAP3 || OMAP3_EMU) 10570f4f0672SJamie Iles default y 10580f4f0672SJamie Iles bool 10590f4f0672SJamie Iles 106052108641Seric miaoconfig MULTI_IRQ_HANDLER 106152108641Seric miao bool 106252108641Seric miao help 106352108641Seric miao Allow each machine to specify it's own IRQ handler at run time. 106452108641Seric miao 10653b93e7b0SHyok S. Choiif !MMU 10663b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 10673b93e7b0SHyok S. Choiendif 10683b93e7b0SHyok S. Choi 10699cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 10709cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 107181d11955STony Lindgren depends on CPU_V6 10729cba3cccSCatalin Marinas help 10739cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 10749cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 10759cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 10769cba3cccSCatalin Marinas recommended workaround. 10779cba3cccSCatalin Marinas 10787ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 10797ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 10807ce236fcSCatalin Marinas depends on CPU_V7 10817ce236fcSCatalin Marinas help 10827ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 10837ce236fcSCatalin Marinas (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 10847ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 10857ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 10867ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 10877ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 10887ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 10897ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 10907ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 10917ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 10927ce236fcSCatalin Marinas available in non-secure mode. 10937ce236fcSCatalin Marinas 1094855c551fSCatalin Marinasconfig ARM_ERRATA_458693 1095855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 1096855c551fSCatalin Marinas depends on CPU_V7 1097855c551fSCatalin Marinas help 1098855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 1099855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 1100855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 1101855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 1102855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 1103855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 1104855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 1105855c551fSCatalin Marinas register may not be available in non-secure mode. 1106855c551fSCatalin Marinas 11070516e464SCatalin Marinasconfig ARM_ERRATA_460075 11080516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 11090516e464SCatalin Marinas depends on CPU_V7 11100516e464SCatalin Marinas help 11110516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 11120516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 11130516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 11140516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 11150516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 11160516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 11170516e464SCatalin Marinas may not be available in non-secure mode. 11180516e464SCatalin Marinas 11199f05027cSWill Deaconconfig ARM_ERRATA_742230 11209f05027cSWill Deacon bool "ARM errata: DMB operation may be faulty" 11219f05027cSWill Deacon depends on CPU_V7 && SMP 11229f05027cSWill Deacon help 11239f05027cSWill Deacon This option enables the workaround for the 742230 Cortex-A9 11249f05027cSWill Deacon (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction 11259f05027cSWill Deacon between two write operations may not ensure the correct visibility 11269f05027cSWill Deacon ordering of the two writes. This workaround sets a specific bit in 11279f05027cSWill Deacon the diagnostic register of the Cortex-A9 which causes the DMB 11289f05027cSWill Deacon instruction to behave as a DSB, ensuring the correct behaviour of 11299f05027cSWill Deacon the two writes. 11309f05027cSWill Deacon 1131a672e99bSWill Deaconconfig ARM_ERRATA_742231 1132a672e99bSWill Deacon bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" 1133a672e99bSWill Deacon depends on CPU_V7 && SMP 1134a672e99bSWill Deacon help 1135a672e99bSWill Deacon This option enables the workaround for the 742231 Cortex-A9 1136a672e99bSWill Deacon (r2p0..r2p2) erratum. Under certain conditions, specific to the 1137a672e99bSWill Deacon Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode, 1138a672e99bSWill Deacon accessing some data located in the same cache line, may get corrupted 1139a672e99bSWill Deacon data due to bad handling of the address hazard when the line gets 1140a672e99bSWill Deacon replaced from one of the CPUs at the same time as another CPU is 1141a672e99bSWill Deacon accessing it. This workaround sets specific bits in the diagnostic 1142a672e99bSWill Deacon register of the Cortex-A9 which reduces the linefill issuing 1143a672e99bSWill Deacon capabilities of the processor. 1144a672e99bSWill Deacon 11459e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369 11469e65582aSSantosh Shilimkar bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 11479e65582aSSantosh Shilimkar depends on CACHE_L2X0 && ARCH_OMAP4 11489e65582aSSantosh Shilimkar help 11499e65582aSSantosh Shilimkar The PL310 L2 cache controller implements three types of Clean & 11509e65582aSSantosh Shilimkar Invalidate maintenance operations: by Physical Address 11519e65582aSSantosh Shilimkar (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 11529e65582aSSantosh Shilimkar They are architecturally defined to behave as the execution of a 11539e65582aSSantosh Shilimkar clean operation followed immediately by an invalidate operation, 11549e65582aSSantosh Shilimkar both performing to the same memory location. This functionality 11559e65582aSSantosh Shilimkar is not correctly implemented in PL310 as clean lines are not 11569e65582aSSantosh Shilimkar invalidated as a result of these operations. Note that this errata 11579e65582aSSantosh Shilimkar uses Texas Instrument's secure monitor api. 1158cdf357f1SWill Deacon 1159cdf357f1SWill Deaconconfig ARM_ERRATA_720789 1160cdf357f1SWill Deacon bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" 1161cdf357f1SWill Deacon depends on CPU_V7 && SMP 1162cdf357f1SWill Deacon help 1163cdf357f1SWill Deacon This option enables the workaround for the 720789 Cortex-A9 (prior to 1164cdf357f1SWill Deacon r2p0) erratum. A faulty ASID can be sent to the other CPUs for the 1165cdf357f1SWill Deacon broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. 1166cdf357f1SWill Deacon As a consequence of this erratum, some TLB entries which should be 1167cdf357f1SWill Deacon invalidated are not, resulting in an incoherency in the system page 1168cdf357f1SWill Deacon tables. The workaround changes the TLB flushing routines to invalidate 1169cdf357f1SWill Deacon entries regardless of the ASID. 1170475d92fcSWill Deacon 1171475d92fcSWill Deaconconfig ARM_ERRATA_743622 1172475d92fcSWill Deacon bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" 1173475d92fcSWill Deacon depends on CPU_V7 1174475d92fcSWill Deacon help 1175475d92fcSWill Deacon This option enables the workaround for the 743622 Cortex-A9 1176475d92fcSWill Deacon (r2p0..r2p2) erratum. Under very rare conditions, a faulty 1177475d92fcSWill Deacon optimisation in the Cortex-A9 Store Buffer may lead to data 1178475d92fcSWill Deacon corruption. This workaround sets a specific bit in the diagnostic 1179475d92fcSWill Deacon register of the Cortex-A9 which disables the Store Buffer 1180475d92fcSWill Deacon optimisation, preventing the defect from occurring. This has no 1181475d92fcSWill Deacon visible impact on the overall performance or power consumption of the 1182475d92fcSWill Deacon processor. 1183475d92fcSWill Deacon 11841da177e4SLinus Torvaldsendmenu 11851da177e4SLinus Torvalds 11861da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 11871da177e4SLinus Torvalds 11881da177e4SLinus Torvaldsmenu "Bus support" 11891da177e4SLinus Torvalds 11901da177e4SLinus Torvaldsconfig ARM_AMBA 11911da177e4SLinus Torvalds bool 11921da177e4SLinus Torvalds 11931da177e4SLinus Torvaldsconfig ISA 11941da177e4SLinus Torvalds bool 11951da177e4SLinus Torvalds help 11961da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 11971da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 11981da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 11991da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 12001da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 12011da177e4SLinus Torvalds 1202065909b9SRussell King# Select ISA DMA controller support 12031da177e4SLinus Torvaldsconfig ISA_DMA 12041da177e4SLinus Torvalds bool 1205065909b9SRussell King select ISA_DMA_API 12061da177e4SLinus Torvalds 1207065909b9SRussell King# Select ISA DMA interface 12085cae841bSAl Viroconfig ISA_DMA_API 12095cae841bSAl Viro bool 12105cae841bSAl Viro 12111da177e4SLinus Torvaldsconfig PCI 12120b05da72SHans Ulli Kroll bool "PCI support" if MIGHT_HAVE_PCI 12131da177e4SLinus Torvalds help 12141da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 12151da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 12161da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 12171da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 12181da177e4SLinus Torvalds 121952882173SAnton Vorontsovconfig PCI_DOMAINS 122052882173SAnton Vorontsov bool 122152882173SAnton Vorontsov depends on PCI 122252882173SAnton Vorontsov 1223b080ac8aSMarcelo Roberto Jimenezconfig PCI_NANOENGINE 1224b080ac8aSMarcelo Roberto Jimenez bool "BSE nanoEngine PCI support" 1225b080ac8aSMarcelo Roberto Jimenez depends on SA1100_NANOENGINE 1226b080ac8aSMarcelo Roberto Jimenez help 1227b080ac8aSMarcelo Roberto Jimenez Enable PCI on the BSE nanoEngine board. 1228b080ac8aSMarcelo Roberto Jimenez 122936e23590SMatthew Wilcoxconfig PCI_SYSCALL 123036e23590SMatthew Wilcox def_bool PCI 123136e23590SMatthew Wilcox 12321da177e4SLinus Torvalds# Select the host bridge type 12331da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505 12341da177e4SLinus Torvalds bool 12351da177e4SLinus Torvalds depends on PCI && ARCH_SHARK 12361da177e4SLinus Torvalds default y 12371da177e4SLinus Torvalds 1238a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 1239a0113a99SMike Rapoport bool 1240a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 1241a0113a99SMike Rapoport default y 1242a0113a99SMike Rapoport select DMABOUNCE 1243a0113a99SMike Rapoport 12441da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 12451da177e4SLinus Torvalds 12461da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 12471da177e4SLinus Torvalds 12481da177e4SLinus Torvaldsendmenu 12491da177e4SLinus Torvalds 12501da177e4SLinus Torvaldsmenu "Kernel Features" 12511da177e4SLinus Torvalds 12520567a0c0SKevin Hilmansource "kernel/time/Kconfig" 12530567a0c0SKevin Hilman 12541da177e4SLinus Torvaldsconfig SMP 12551da177e4SLinus Torvalds bool "Symmetric Multi-Processing (EXPERIMENTAL)" 1256971acb9bSRussell King depends on EXPERIMENTAL 1257bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 1258971acb9bSRussell King depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \ 1259971acb9bSRussell King MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \ 126089c3dedfSDaniel Walker ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \ 1261e9d728f5SPaul Mundt ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE 1262f6dd9fa5SJens Axboe select USE_GENERIC_SMP_HELPERS 126389c3dedfSDaniel Walker select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP 12641da177e4SLinus Torvalds help 12651da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 12661da177e4SLinus Torvalds a system with only one CPU, like most personal computers, say N. If 12671da177e4SLinus Torvalds you have a system with more than one CPU, say Y. 12681da177e4SLinus Torvalds 12691da177e4SLinus Torvalds If you say N here, the kernel will run on single and multiprocessor 12701da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 12711da177e4SLinus Torvalds you say Y here, the kernel will run on many, but not all, single 12721da177e4SLinus Torvalds processor machines. On a single processor machine, the kernel will 12731da177e4SLinus Torvalds run faster if you say N here. 12741da177e4SLinus Torvalds 127503502faaSAdrian Bunk See also <file:Documentation/i386/IO-APIC.txt>, 12761da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 127750a23e6eSJustin P. Mattock <http://tldp.org/HOWTO/SMP-HOWTO.html>. 12781da177e4SLinus Torvalds 12791da177e4SLinus Torvalds If you don't know what to do here, say N. 12801da177e4SLinus Torvalds 1281f00ec48fSRussell Kingconfig SMP_ON_UP 1282f00ec48fSRussell King bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)" 1283f00ec48fSRussell King depends on EXPERIMENTAL 12844d2692a7SNicolas Pitre depends on SMP && !XIP_KERNEL 1285f00ec48fSRussell King default y 1286f00ec48fSRussell King help 1287f00ec48fSRussell King SMP kernels contain instructions which fail on non-SMP processors. 1288f00ec48fSRussell King Enabling this option allows the kernel to modify itself to make 1289f00ec48fSRussell King these instructions safe. Disabling it allows about 1K of space 1290f00ec48fSRussell King savings. 1291f00ec48fSRussell King 1292f00ec48fSRussell King If you don't know what to do here, say Y. 1293f00ec48fSRussell King 1294a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1295a8cbcd92SRussell King bool 1296a8cbcd92SRussell King depends on SMP 1297a8cbcd92SRussell King help 1298a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1299a8cbcd92SRussell King 1300f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1301f32f4ce2SRussell King bool 1302f32f4ce2SRussell King depends on SMP 130315095bb0SRussell King select TICK_ONESHOT 1304f32f4ce2SRussell King help 1305f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1306f32f4ce2SRussell King 13078d5796d2SLennert Buytenhekchoice 13088d5796d2SLennert Buytenhek prompt "Memory split" 13098d5796d2SLennert Buytenhek default VMSPLIT_3G 13108d5796d2SLennert Buytenhek help 13118d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 13128d5796d2SLennert Buytenhek 13138d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 13148d5796d2SLennert Buytenhek option alone! 13158d5796d2SLennert Buytenhek 13168d5796d2SLennert Buytenhek config VMSPLIT_3G 13178d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 13188d5796d2SLennert Buytenhek config VMSPLIT_2G 13198d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 13208d5796d2SLennert Buytenhek config VMSPLIT_1G 13218d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 13228d5796d2SLennert Buytenhekendchoice 13238d5796d2SLennert Buytenhek 13248d5796d2SLennert Buytenhekconfig PAGE_OFFSET 13258d5796d2SLennert Buytenhek hex 13268d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 13278d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 13288d5796d2SLennert Buytenhek default 0xC0000000 13298d5796d2SLennert Buytenhek 13301da177e4SLinus Torvaldsconfig NR_CPUS 13311da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 13321da177e4SLinus Torvalds range 2 32 13331da177e4SLinus Torvalds depends on SMP 13341da177e4SLinus Torvalds default "4" 13351da177e4SLinus Torvalds 1336a054a811SRussell Kingconfig HOTPLUG_CPU 1337a054a811SRussell King bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1338a054a811SRussell King depends on SMP && HOTPLUG && EXPERIMENTAL 1339176bfc44SDaniel Walker depends on !ARCH_MSM 1340a054a811SRussell King help 1341a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1342a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1343a054a811SRussell King 134437ee16aeSRussell Kingconfig LOCAL_TIMERS 134537ee16aeSRussell King bool "Use local timer interrupts" 1346971acb9bSRussell King depends on SMP 134737ee16aeSRussell King default y 134889c3dedfSDaniel Walker select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP 134937ee16aeSRussell King help 135037ee16aeSRussell King Enable support for local timers on SMP platforms, rather then the 135137ee16aeSRussell King legacy IPI broadcast method. Local timers allows the system 135237ee16aeSRussell King accounting to be spread across the timer interval, preventing a 135337ee16aeSRussell King "thundering herd" at every timer tick. 135437ee16aeSRussell King 1355d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 13561da177e4SLinus Torvalds 1357f8065813SRussell Kingconfig HZ 1358f8065813SRussell King int 135949b7a491SKukjin Kim default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \ 13602192482eSRussell King ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310 1361bfe65704SRussell King default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 13625248c657SDavid Brownell default AT91_TIMER_HZ if ARCH_AT91 13635da3e714SMagnus Damm default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE 1364f8065813SRussell King default 100 1365f8065813SRussell King 136616c79651SCatalin Marinasconfig THUMB2_KERNEL 13674a50bfe3SRussell King bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)" 13686e6fc998SDave Martin depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL 136916c79651SCatalin Marinas select AEABI 137016c79651SCatalin Marinas select ARM_ASM_UNIFIED 137116c79651SCatalin Marinas help 137216c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 137316c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 137416c79651SCatalin Marinas ARM-Thumb syntax is needed. 137516c79651SCatalin Marinas 137616c79651SCatalin Marinas If unsure, say N. 137716c79651SCatalin Marinas 13780becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 13790becb088SCatalin Marinas bool 13800becb088SCatalin Marinas 1381704bdda0SNicolas Pitreconfig AEABI 1382704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1383704bdda0SNicolas Pitre help 1384704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1385704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1386704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1387704bdda0SNicolas Pitre 1388704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1389704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1390704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1391704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1392704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1393704bdda0SNicolas Pitre 1394704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1395704bdda0SNicolas Pitre 13966c90c872SNicolas Pitreconfig OABI_COMPAT 1397a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 139861c484d4SNicolas Pitre depends on AEABI && EXPERIMENTAL 13996c90c872SNicolas Pitre default y 14006c90c872SNicolas Pitre help 14016c90c872SNicolas Pitre This option preserves the old syscall interface along with the 14026c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 14036c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 14046c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 14056c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 14066c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 14076c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 14086c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 14096c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 14106c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 14116c90c872SNicolas Pitre at all). If in doubt say Y. 14126c90c872SNicolas Pitre 1413eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1414e80d6a24SMel Gorman bool 1415e80d6a24SMel Gorman 141605944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 141705944d74SRussell King bool 141805944d74SRussell King 141907a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 142007a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 142107a2f737SRussell King 142205944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 1423be370302SRussell King def_bool ARCH_SPARSEMEM_ENABLE 1424c80d79d7SYasunori Goto 1425053a96caSNicolas Pitreconfig HIGHMEM 1426053a96caSNicolas Pitre bool "High Memory Support (EXPERIMENTAL)" 1427053a96caSNicolas Pitre depends on MMU && EXPERIMENTAL 1428053a96caSNicolas Pitre help 1429053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1430053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1431053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1432053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1433053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1434053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1435053a96caSNicolas Pitre 1436053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1437053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1438053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1439053a96caSNicolas Pitre 1440053a96caSNicolas Pitre If unsure, say n. 1441053a96caSNicolas Pitre 144265cec8e3SRussell Kingconfig HIGHPTE 144365cec8e3SRussell King bool "Allocate 2nd-level pagetables from highmem" 144465cec8e3SRussell King depends on HIGHMEM 144565cec8e3SRussell King depends on !OUTER_CACHE 144665cec8e3SRussell King 14471b8873a0SJamie Ilesconfig HW_PERF_EVENTS 14481b8873a0SJamie Iles bool "Enable hardware performance counter support for perf events" 1449fe166148SWill Deacon depends on PERF_EVENTS && CPU_HAS_PMU 14501b8873a0SJamie Iles default y 14511b8873a0SJamie Iles help 14521b8873a0SJamie Iles Enable hardware performance counter support for perf events. If 14531b8873a0SJamie Iles disabled, perf events will use software events only. 14541b8873a0SJamie Iles 14553f22ab27SDave Hansensource "mm/Kconfig" 14563f22ab27SDave Hansen 1457c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER 1458c1b2d970SMagnus Damm int "Maximum zone order" if ARCH_SHMOBILE 1459c1b2d970SMagnus Damm range 11 64 if ARCH_SHMOBILE 1460c1b2d970SMagnus Damm default "9" if SA1111 1461c1b2d970SMagnus Damm default "11" 1462c1b2d970SMagnus Damm help 1463c1b2d970SMagnus Damm The kernel memory allocator divides physically contiguous memory 1464c1b2d970SMagnus Damm blocks into "zones", where each zone is a power of two number of 1465c1b2d970SMagnus Damm pages. This option selects the largest power of two that the kernel 1466c1b2d970SMagnus Damm keeps in the memory allocator. If you need to allocate very large 1467c1b2d970SMagnus Damm blocks of physically contiguous memory, then you may need to 1468c1b2d970SMagnus Damm increase this value. 1469c1b2d970SMagnus Damm 1470c1b2d970SMagnus Damm This config option is actually maximum order plus one. For example, 1471c1b2d970SMagnus Damm a value of 11 means that the largest free memory block is 2^10 pages. 1472c1b2d970SMagnus Damm 14731da177e4SLinus Torvaldsconfig LEDS 14741da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1475e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 14768c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 14771da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 14781da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 147973a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 148025329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1481ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 14821da177e4SLinus Torvalds help 14831da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 14841da177e4SLinus Torvalds to provide useful information about your current system status. 14851da177e4SLinus Torvalds 14861da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 14871da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 14881da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 14891da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 14901da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 14911da177e4SLinus Torvalds system, but the driver will do nothing. 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvaldsconfig LEDS_TIMER 14941da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1495eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1496eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 14971da177e4SLinus Torvalds depends on LEDS 14980567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 14991da177e4SLinus Torvalds default y if ARCH_EBSA110 15001da177e4SLinus Torvalds help 15011da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 15021da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 15031da177e4SLinus Torvalds will flash regularly to indicate that the system is still 15041da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 15051da177e4SLinus Torvalds debugging unstable kernels. 15061da177e4SLinus Torvalds 15071da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 15081da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 15091da177e4SLinus Torvalds will overrule the CPU usage LED. 15101da177e4SLinus Torvalds 15111da177e4SLinus Torvaldsconfig LEDS_CPU 15121da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1513eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1514eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1515eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 15161da177e4SLinus Torvalds depends on LEDS 15171da177e4SLinus Torvalds help 15181da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 15191da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 15201da177e4SLinus Torvalds is not currently executing. 15211da177e4SLinus Torvalds 15221da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 15231da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 15241da177e4SLinus Torvalds will overrule the CPU usage LED. 15251da177e4SLinus Torvalds 15261da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 15271da177e4SLinus Torvalds bool 1528f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 15291da177e4SLinus Torvalds default y if !ARCH_EBSA110 1530e119bfffSRussell King select HAVE_PROC_CPU if PROC_FS 15311da177e4SLinus Torvalds help 15321da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 15331da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 15341da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 15351da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 15361da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 15371da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 15381da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 15391da177e4SLinus Torvalds 154039ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 154139ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 154239ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 154339ec58f3SLennert Buytenhek default y if CPU_FEROCEON 154439ec58f3SLennert Buytenhek help 154539ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 154639ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 154739ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 154839ec58f3SLennert Buytenhek 154939ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 155039ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 155139ec58f3SLennert Buytenhek such copy operations with large buffers. 155239ec58f3SLennert Buytenhek 155339ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 155439ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 155539ec58f3SLennert Buytenhek 155670c70d97SNicolas Pitreconfig SECCOMP 155770c70d97SNicolas Pitre bool 155870c70d97SNicolas Pitre prompt "Enable seccomp to safely compute untrusted bytecode" 155970c70d97SNicolas Pitre ---help--- 156070c70d97SNicolas Pitre This kernel feature is useful for number crunching applications 156170c70d97SNicolas Pitre that may need to compute untrusted bytecode during their 156270c70d97SNicolas Pitre execution. By using pipes or other transports made available to 156370c70d97SNicolas Pitre the process as file descriptors supporting the read/write 156470c70d97SNicolas Pitre syscalls, it's possible to isolate those applications in 156570c70d97SNicolas Pitre their own address space using seccomp. Once seccomp is 156670c70d97SNicolas Pitre enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 156770c70d97SNicolas Pitre and the task is only allowed to execute a few safe syscalls 156870c70d97SNicolas Pitre defined by each seccomp mode. 156970c70d97SNicolas Pitre 1570c743f380SNicolas Pitreconfig CC_STACKPROTECTOR 1571c743f380SNicolas Pitre bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" 15724a50bfe3SRussell King depends on EXPERIMENTAL 1573c743f380SNicolas Pitre help 1574c743f380SNicolas Pitre This option turns on the -fstack-protector GCC feature. This 1575c743f380SNicolas Pitre feature puts, at the beginning of functions, a canary value on 1576c743f380SNicolas Pitre the stack just before the return address, and validates 1577c743f380SNicolas Pitre the value just before actually returning. Stack based buffer 1578c743f380SNicolas Pitre overflows (that need to overwrite this return address) now also 1579c743f380SNicolas Pitre overwrite the canary, which gets detected and the attack is then 1580c743f380SNicolas Pitre neutralized via a kernel panic. 1581c743f380SNicolas Pitre This feature requires gcc version 4.2 or above. 1582c743f380SNicolas Pitre 158373a65b3fSUwe Kleine-Königconfig DEPRECATED_PARAM_STRUCT 158473a65b3fSUwe Kleine-König bool "Provide old way to pass kernel parameters" 158573a65b3fSUwe Kleine-König help 158673a65b3fSUwe Kleine-König This was deprecated in 2001 and announced to live on for 5 years. 158773a65b3fSUwe Kleine-König Some old boot loaders still use this way. 158873a65b3fSUwe Kleine-König 15891da177e4SLinus Torvaldsendmenu 15901da177e4SLinus Torvalds 15911da177e4SLinus Torvaldsmenu "Boot options" 15921da177e4SLinus Torvalds 15931da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 15941da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 15951da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 15961da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 15971da177e4SLinus Torvalds default "0" 15981da177e4SLinus Torvalds help 15991da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 16001da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 16011da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 16021da177e4SLinus Torvalds value in their defconfig file. 16031da177e4SLinus Torvalds 16041da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 16051da177e4SLinus Torvalds 16061da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 16071da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 16081da177e4SLinus Torvalds default "0" 16091da177e4SLinus Torvalds help 1610f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1611f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1612f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1613f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1614f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1615f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 16161da177e4SLinus Torvalds 16171da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 16181da177e4SLinus Torvalds 16191da177e4SLinus Torvaldsconfig ZBOOT_ROM 16201da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 16211da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 16221da177e4SLinus Torvalds help 16231da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 16241da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 16251da177e4SLinus Torvalds 16261da177e4SLinus Torvaldsconfig CMDLINE 16271da177e4SLinus Torvalds string "Default kernel command string" 16281da177e4SLinus Torvalds default "" 16291da177e4SLinus Torvalds help 16301da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 16311da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 16321da177e4SLinus Torvalds architectures, you should supply some command-line options at build 16331da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 16341da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 16351da177e4SLinus Torvalds 163692d2040dSAlexander Hollerconfig CMDLINE_FORCE 163792d2040dSAlexander Holler bool "Always use the default kernel command string" 163892d2040dSAlexander Holler depends on CMDLINE != "" 163992d2040dSAlexander Holler help 164092d2040dSAlexander Holler Always use the default kernel command string, even if the boot 164192d2040dSAlexander Holler loader passes other arguments to the kernel. 164292d2040dSAlexander Holler This is useful if you cannot or don't want to change the 164392d2040dSAlexander Holler command-line options your boot loader passes to the kernel. 164492d2040dSAlexander Holler 164592d2040dSAlexander Holler If unsure, say N. 164692d2040dSAlexander Holler 16471da177e4SLinus Torvaldsconfig XIP_KERNEL 16481da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 16491da177e4SLinus Torvalds depends on !ZBOOT_ROM 16501da177e4SLinus Torvalds help 16511da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 16521da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 16531da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 16541da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 16551da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 16561da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 16571da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 16581da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 16591da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 16601da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 16611da177e4SLinus Torvalds 16621da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 16631da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 16641da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 16651da177e4SLinus Torvalds 16661da177e4SLinus Torvalds If unsure, say N. 16671da177e4SLinus Torvalds 16681da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 16691da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 16701da177e4SLinus Torvalds depends on XIP_KERNEL 16711da177e4SLinus Torvalds default "0x00080000" 16721da177e4SLinus Torvalds help 16731da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 16741da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 16751da177e4SLinus Torvalds own flash usage. 16761da177e4SLinus Torvalds 1677c587e4a6SRichard Purdieconfig KEXEC 1678c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 1679c587e4a6SRichard Purdie depends on EXPERIMENTAL 1680c587e4a6SRichard Purdie help 1681c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1682c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 168301dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1684c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1685c587e4a6SRichard Purdie 1686c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1687c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1688c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 1689c587e4a6SRichard Purdie support. 1690c587e4a6SRichard Purdie 16914cd9d6f7SRichard Purdieconfig ATAGS_PROC 16924cd9d6f7SRichard Purdie bool "Export atags in procfs" 1693b98d7291SUli Luckas depends on KEXEC 1694b98d7291SUli Luckas default y 16954cd9d6f7SRichard Purdie help 16964cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 16974cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 16984cd9d6f7SRichard Purdie 1699cb5d39b3SMika Westerbergconfig CRASH_DUMP 1700cb5d39b3SMika Westerberg bool "Build kdump crash kernel (EXPERIMENTAL)" 1701cb5d39b3SMika Westerberg depends on EXPERIMENTAL 1702cb5d39b3SMika Westerberg help 1703cb5d39b3SMika Westerberg Generate crash dump after being started by kexec. This should 1704cb5d39b3SMika Westerberg be normally only set in special crash dump kernels which are 1705cb5d39b3SMika Westerberg loaded in the main kernel with kexec-tools into a specially 1706cb5d39b3SMika Westerberg reserved region and then later executed after a crash by 1707cb5d39b3SMika Westerberg kdump/kexec. The crash dump kernel must be compiled to a 1708cb5d39b3SMika Westerberg memory address not used by the main kernel 1709cb5d39b3SMika Westerberg 1710cb5d39b3SMika Westerberg For more details see Documentation/kdump/kdump.txt 1711cb5d39b3SMika Westerberg 1712e69edc79SEric Miaoconfig AUTO_ZRELADDR 1713e69edc79SEric Miao bool "Auto calculation of the decompressed kernel image address" 1714e69edc79SEric Miao depends on !ZBOOT_ROM && !ARCH_U300 1715e69edc79SEric Miao help 1716e69edc79SEric Miao ZRELADDR is the physical address where the decompressed kernel 1717e69edc79SEric Miao image will be placed. If AUTO_ZRELADDR is selected, the address 1718e69edc79SEric Miao will be determined at run-time by masking the current IP with 1719e69edc79SEric Miao 0xf8000000. This assumes the zImage being placed in the first 128MB 1720e69edc79SEric Miao from start of memory. 1721e69edc79SEric Miao 17221da177e4SLinus Torvaldsendmenu 17231da177e4SLinus Torvalds 1724ac9d7efcSRussell Kingmenu "CPU Power Management" 17251da177e4SLinus Torvalds 172689c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 17271da177e4SLinus Torvalds 17281da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 17291da177e4SLinus Torvalds 173064f102b6SYong Shenconfig CPU_FREQ_IMX 173164f102b6SYong Shen tristate "CPUfreq driver for i.MX CPUs" 173264f102b6SYong Shen depends on ARCH_MXC && CPU_FREQ 173364f102b6SYong Shen help 173464f102b6SYong Shen This enables the CPUfreq driver for i.MX CPUs. 173564f102b6SYong Shen 17361da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 17371da177e4SLinus Torvalds bool 17381da177e4SLinus Torvalds 17391da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 17401da177e4SLinus Torvalds bool 17411da177e4SLinus Torvalds 17421da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 17431da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 17441da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 17451da177e4SLinus Torvalds default y 17461da177e4SLinus Torvalds help 17471da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 17481da177e4SLinus Torvalds 17491da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 17501da177e4SLinus Torvalds 17511da177e4SLinus Torvalds If in doubt, say Y. 17521da177e4SLinus Torvalds 17539e2697ffSRussell Kingconfig CPU_FREQ_PXA 17549e2697ffSRussell King bool 17559e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 17569e2697ffSRussell King default y 17579e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 17589e2697ffSRussell King 1759b3748dddSMark Brownconfig CPU_FREQ_S3C64XX 1760b3748dddSMark Brown bool "CPUfreq support for Samsung S3C64XX CPUs" 1761b3748dddSMark Brown depends on CPU_FREQ && CPU_S3C6410 1762b3748dddSMark Brown 17639d56c02aSBen Dooksconfig CPU_FREQ_S3C 17649d56c02aSBen Dooks bool 17659d56c02aSBen Dooks help 17669d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 17679d56c02aSBen Dooks 17689d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 17694a50bfe3SRussell King bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)" 17709d56c02aSBen Dooks depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 17719d56c02aSBen Dooks select CPU_FREQ_S3C 17729d56c02aSBen Dooks help 17739d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 17749d56c02aSBen Dooks of CPUs. 17759d56c02aSBen Dooks 17769d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 17779d56c02aSBen Dooks 17789d56c02aSBen Dooks If in doubt, say N. 17799d56c02aSBen Dooks 17809d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 17814a50bfe3SRussell King bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)" 17829d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 17839d56c02aSBen Dooks help 17849d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 17859d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 17869d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 17879d56c02aSBen Dooks 17889d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 17899d56c02aSBen Dooks be built which may increase the size of the kernel image. 17909d56c02aSBen Dooks 17919d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 17929d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 17939d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 17949d56c02aSBen Dooks help 17959d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 17969d56c02aSBen Dooks 17979d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 17989d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 17999d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 18009d56c02aSBen Dooks help 18019d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 18029d56c02aSBen Dooks 1803e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 1804e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 1805e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 1806e6d197a6SBen Dooks help 1807e6d197a6SBen Dooks Export status information via debugfs. 1808e6d197a6SBen Dooks 18091da177e4SLinus Torvaldsendif 18101da177e4SLinus Torvalds 1811ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 1812ac9d7efcSRussell King 1813ac9d7efcSRussell Kingendmenu 1814ac9d7efcSRussell King 18151da177e4SLinus Torvaldsmenu "Floating point emulation" 18161da177e4SLinus Torvalds 18171da177e4SLinus Torvaldscomment "At least one emulation must be selected" 18181da177e4SLinus Torvalds 18191da177e4SLinus Torvaldsconfig FPE_NWFPE 18201da177e4SLinus Torvalds bool "NWFPE math emulation" 1821593c252aSDave Martin depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL 18221da177e4SLinus Torvalds ---help--- 18231da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 18241da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 18251da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 18261da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 18271da177e4SLinus Torvalds 18281da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 18291da177e4SLinus Torvalds early in the bootup. 18301da177e4SLinus Torvalds 18311da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 18321da177e4SLinus Torvalds bool "Support extended precision" 1833bedf142bSLennert Buytenhek depends on FPE_NWFPE 18341da177e4SLinus Torvalds help 18351da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 18361da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 18371da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 18381da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 18391da177e4SLinus Torvalds floating point emulator without any good reason. 18401da177e4SLinus Torvalds 18411da177e4SLinus Torvalds You almost surely want to say N here. 18421da177e4SLinus Torvalds 18431da177e4SLinus Torvaldsconfig FPE_FASTFPE 18441da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 18458993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 18461da177e4SLinus Torvalds ---help--- 18471da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 18481da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 18491da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 18501da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 18511da177e4SLinus Torvalds 18521da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 18531da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 18541da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 18551da177e4SLinus Torvalds choose NWFPE. 18561da177e4SLinus Torvalds 18571da177e4SLinus Torvaldsconfig VFP 18581da177e4SLinus Torvalds bool "VFP-format floating point maths" 1859c00d4ffdSRussell King depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 18601da177e4SLinus Torvalds help 18611da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 18621da177e4SLinus Torvalds if your hardware includes a VFP unit. 18631da177e4SLinus Torvalds 18641da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 18651da177e4SLinus Torvalds release notes and additional status information. 18661da177e4SLinus Torvalds 18671da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 18681da177e4SLinus Torvalds 186925ebee02SCatalin Marinasconfig VFPv3 187025ebee02SCatalin Marinas bool 187125ebee02SCatalin Marinas depends on VFP 187225ebee02SCatalin Marinas default y if CPU_V7 187325ebee02SCatalin Marinas 1874b5872db4SCatalin Marinasconfig NEON 1875b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 1876b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 1877b5872db4SCatalin Marinas help 1878b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1879b5872db4SCatalin Marinas Extension. 1880b5872db4SCatalin Marinas 18811da177e4SLinus Torvaldsendmenu 18821da177e4SLinus Torvalds 18831da177e4SLinus Torvaldsmenu "Userspace binary formats" 18841da177e4SLinus Torvalds 18851da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 18861da177e4SLinus Torvalds 18871da177e4SLinus Torvaldsconfig ARTHUR 18881da177e4SLinus Torvalds tristate "RISC OS personality" 1889704bdda0SNicolas Pitre depends on !AEABI 18901da177e4SLinus Torvalds help 18911da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 18921da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 18931da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 18941da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 18951da177e4SLinus Torvalds will be called arthur). 18961da177e4SLinus Torvalds 18971da177e4SLinus Torvaldsendmenu 18981da177e4SLinus Torvalds 18991da177e4SLinus Torvaldsmenu "Power management options" 19001da177e4SLinus Torvalds 1901eceab4acSRussell Kingsource "kernel/power/Kconfig" 19021da177e4SLinus Torvalds 1903f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 1904f4cb5700SJohannes Berg def_bool y 1905f4cb5700SJohannes Berg 19061da177e4SLinus Torvaldsendmenu 19071da177e4SLinus Torvalds 1908d5950b43SSam Ravnborgsource "net/Kconfig" 1909d5950b43SSam Ravnborg 1910ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 19111da177e4SLinus Torvalds 19121da177e4SLinus Torvaldssource "fs/Kconfig" 19131da177e4SLinus Torvalds 19141da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 19151da177e4SLinus Torvalds 19161da177e4SLinus Torvaldssource "security/Kconfig" 19171da177e4SLinus Torvalds 19181da177e4SLinus Torvaldssource "crypto/Kconfig" 19191da177e4SLinus Torvalds 19201da177e4SLinus Torvaldssource "lib/Kconfig" 1921