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 291da177e4SLinus Torvalds help 301da177e4SLinus Torvalds The ARM series is a line of low-power-consumption RISC chip designs 31f6c8965aSMartin Michlmayr licensed by ARM Ltd and targeted at embedded applications and 321da177e4SLinus Torvalds handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 331da177e4SLinus Torvalds manufactured, but legacy ARM-based PC hardware remains popular in 341da177e4SLinus Torvalds Europe. There is an ARM Linux project with a web page at 351da177e4SLinus Torvalds <http://www.arm.linux.org.uk/>. 361da177e4SLinus Torvalds 371a189b97SRussell Kingconfig HAVE_PWM 381a189b97SRussell King bool 391a189b97SRussell King 400b05da72SHans Ulli Krollconfig MIGHT_HAVE_PCI 410b05da72SHans Ulli Kroll bool 420b05da72SHans Ulli Kroll 4375e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION 4475e7153aSRalf Baechle bool 4575e7153aSRalf Baechle 46112f38a4SRussell Kingconfig HAVE_SCHED_CLOCK 47112f38a4SRussell King bool 48112f38a4SRussell King 490a938b97SDavid Brownellconfig GENERIC_GPIO 500a938b97SDavid Brownell bool 510a938b97SDavid Brownell 525cfc8ee0SJohn Stultzconfig ARCH_USES_GETTIMEOFFSET 535cfc8ee0SJohn Stultz bool 545cfc8ee0SJohn Stultz default n 55746140c7SKevin Hilman 560567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS 570567a0c0SKevin Hilman bool 580567a0c0SKevin Hilman 59a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST 60a8655e83SCatalin Marinas bool 61a8655e83SCatalin Marinas depends on GENERIC_CLOCKEVENTS 625388a6b2SRussell King default y if SMP 63a8655e83SCatalin Marinas 64bc581770SLinus Walleijconfig HAVE_TCM 65bc581770SLinus Walleij bool 66bc581770SLinus Walleij select GENERIC_ALLOCATOR 67bc581770SLinus Walleij 68e119bfffSRussell Kingconfig HAVE_PROC_CPU 69e119bfffSRussell King bool 70e119bfffSRussell King 715ea81769SAl Viroconfig NO_IOPORT 725ea81769SAl Viro bool 735ea81769SAl Viro 741da177e4SLinus Torvaldsconfig EISA 751da177e4SLinus Torvalds bool 761da177e4SLinus Torvalds ---help--- 771da177e4SLinus Torvalds The Extended Industry Standard Architecture (EISA) bus was 781da177e4SLinus Torvalds developed as an open alternative to the IBM MicroChannel bus. 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds The EISA bus provided some of the features of the IBM MicroChannel 811da177e4SLinus Torvalds bus while maintaining backward compatibility with cards made for 821da177e4SLinus Torvalds the older ISA bus. The EISA bus saw limited use between 1988 and 831da177e4SLinus Torvalds 1995 when it was made obsolete by the PCI bus. 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds Say Y here if you are building a kernel for an EISA-based machine. 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds Otherwise, say N. 881da177e4SLinus Torvalds 891da177e4SLinus Torvaldsconfig SBUS 901da177e4SLinus Torvalds bool 911da177e4SLinus Torvalds 921da177e4SLinus Torvaldsconfig MCA 931da177e4SLinus Torvalds bool 941da177e4SLinus Torvalds help 951da177e4SLinus Torvalds MicroChannel Architecture is found in some IBM PS/2 machines and 961da177e4SLinus Torvalds laptops. It is a bus system similar to PCI or ISA. See 971da177e4SLinus Torvalds <file:Documentation/mca.txt> (and especially the web page given 981da177e4SLinus Torvalds there) before attempting to build an MCA bus kernel. 991da177e4SLinus Torvalds 1004a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS 1014a2581a0SThomas Gleixner bool 1024a2581a0SThomas Gleixner default y 1034a2581a0SThomas Gleixner 104f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT 105f16fb1ecSRussell King bool 106f16fb1ecSRussell King default y 107f16fb1ecSRussell King 108f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT 109f76e9154SNicolas Pitre bool 110f76e9154SNicolas Pitre depends on !SMP 111f76e9154SNicolas Pitre default y 112f76e9154SNicolas Pitre 113f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT 114f16fb1ecSRussell King bool 115f16fb1ecSRussell King default y 116f16fb1ecSRussell King 1177ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT 1187ad1bcb2SRussell King bool 1197ad1bcb2SRussell King default y 1207ad1bcb2SRussell King 1214a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND 1224a2581a0SThomas Gleixner bool 1234a2581a0SThomas Gleixner default y 1244a2581a0SThomas Gleixner 1254a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE 1264a2581a0SThomas Gleixner bool 1274a2581a0SThomas Gleixner default y 1284a2581a0SThomas Gleixner 12995c354feSNick Pigginconfig GENERIC_LOCKBREAK 13095c354feSNick Piggin bool 13195c354feSNick Piggin default y 13295c354feSNick Piggin depends on SMP && PREEMPT 13395c354feSNick Piggin 1341da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK 1351da177e4SLinus Torvalds bool 1361da177e4SLinus Torvalds default y 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM 1391da177e4SLinus Torvalds bool 1401da177e4SLinus Torvalds 141f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 142f0d1b0b3SDavid Howells bool 143f0d1b0b3SDavid Howells 144f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 145f0d1b0b3SDavid Howells bool 146f0d1b0b3SDavid Howells 14789c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ 14889c52ed4SBen Dooks bool 14989c52ed4SBen Dooks help 15089c52ed4SBen Dooks Internal node to signify that the ARCH has CPUFREQ support 15189c52ed4SBen Dooks and that the relevant menu configurations are displayed for 15289c52ed4SBen Dooks it. 15389c52ed4SBen Dooks 154c7b0aff4SKevin Hilmanconfig ARCH_HAS_CPU_IDLE_WAIT 155c7b0aff4SKevin Hilman def_bool y 156c7b0aff4SKevin Hilman 157b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT 158b89c3b16SAkinobu Mita bool 159b89c3b16SAkinobu Mita default y 160b89c3b16SAkinobu Mita 1611da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY 1621da177e4SLinus Torvalds bool 1631da177e4SLinus Torvalds default y 1641da177e4SLinus Torvalds 165a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC 166a08b6b79Sviro@ZenIV.linux.org.uk bool 167a08b6b79Sviro@ZenIV.linux.org.uk 1685ac6da66SChristoph Lameterconfig ZONE_DMA 1695ac6da66SChristoph Lameter bool 1705ac6da66SChristoph Lameter 171ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE 172ccd7ab7fSFUJITA Tomonori def_bool y 173ccd7ab7fSFUJITA Tomonori 1741da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA 1751da177e4SLinus Torvalds bool 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvaldsconfig FIQ 1781da177e4SLinus Torvalds bool 1791da177e4SLinus Torvalds 180034d2f5aSAl Viroconfig ARCH_MTD_XIP 181034d2f5aSAl Viro bool 182034d2f5aSAl Viro 18360a752efSPaulius Zaleckasconfig GENERIC_HARDIRQS_NO__DO_IRQ 18460a752efSPaulius Zaleckas def_bool y 18560a752efSPaulius Zaleckas 186d6d502faSKukjin Kimconfig ARM_L1_CACHE_SHIFT_6 187d6d502faSKukjin Kim bool 188d6d502faSKukjin Kim help 189d6d502faSKukjin Kim Setting ARM L1 cache line size to 64 Bytes. 190d6d502faSKukjin Kim 191c760fc19SHyok S. Choiconfig VECTORS_BASE 192c760fc19SHyok S. Choi hex 1936afd6faeSHyok S. Choi default 0xffff0000 if MMU || CPU_HIGH_VECTOR 194c760fc19SHyok S. Choi default DRAM_BASE if REMAP_VECTORS_TO_RAM 195c760fc19SHyok S. Choi default 0x00000000 196c760fc19SHyok S. Choi help 197c760fc19SHyok S. Choi The base address of exception vectors. 198c760fc19SHyok S. Choi 1991da177e4SLinus Torvaldssource "init/Kconfig" 2001da177e4SLinus Torvalds 201dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 202dc52ddc0SMatt Helsley 2031da177e4SLinus Torvaldsmenu "System Type" 2041da177e4SLinus Torvalds 2053c427975SHyok S. Choiconfig MMU 2063c427975SHyok S. Choi bool "MMU-based Paged Memory Management Support" 2073c427975SHyok S. Choi default y 2083c427975SHyok S. Choi help 2093c427975SHyok S. Choi Select if you want MMU-based virtualised addressing space 2103c427975SHyok S. Choi support by paged memory management. If unsure, say 'Y'. 2113c427975SHyok S. Choi 212ccf50e23SRussell King# 213ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option 214ccf50e23SRussell King# text. Please add new entries in the option alphabetic order. 215ccf50e23SRussell King# 2161da177e4SLinus Torvaldschoice 2171da177e4SLinus Torvalds prompt "ARM system type" 2186a0e2430SCatalin Marinas default ARCH_VERSATILE 2191da177e4SLinus Torvalds 2204af6fee1SDeepak Saxenaconfig ARCH_AAEC2000 2214af6fee1SDeepak Saxena bool "Agilent AAEC-2000 based" 222c750815eSRussell King select CPU_ARM920T 2234af6fee1SDeepak Saxena select ARM_AMBA 2249483a578SDavid Brownell select HAVE_CLK 2255cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 2264af6fee1SDeepak Saxena help 2274af6fee1SDeepak Saxena This enables support for systems based on the Agilent AAEC-2000 2284af6fee1SDeepak Saxena 2294af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR 2304af6fee1SDeepak Saxena bool "ARM Ltd. Integrator family" 2314af6fee1SDeepak Saxena select ARM_AMBA 23289c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 2336d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 234c5a0adb5SRussell King select ICST 23513edd86dSRussell King select GENERIC_CLOCKEVENTS 236f4b8b319SRussell King select PLAT_VERSATILE 2374af6fee1SDeepak Saxena help 2384af6fee1SDeepak Saxena Support for ARM's Integrator platform. 2394af6fee1SDeepak Saxena 2404af6fee1SDeepak Saxenaconfig ARCH_REALVIEW 2414af6fee1SDeepak Saxena bool "ARM Ltd. RealView family" 2424af6fee1SDeepak Saxena select ARM_AMBA 2436d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 2441da0c89cSRussell King select HAVE_SCHED_CLOCK 245c5a0adb5SRussell King select ICST 246ae30ceacSCatalin Marinas select GENERIC_CLOCKEVENTS 247eb7fffa3SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 248f4b8b319SRussell King select PLAT_VERSATILE 249e3887714SRussell King select ARM_TIMER_SP804 250b56ba8aaSColin Tuckley select GPIO_PL061 if GPIOLIB 2514af6fee1SDeepak Saxena help 2524af6fee1SDeepak Saxena This enables support for ARM Ltd RealView boards. 2534af6fee1SDeepak Saxena 2544af6fee1SDeepak Saxenaconfig ARCH_VERSATILE 2554af6fee1SDeepak Saxena bool "ARM Ltd. Versatile family" 2564af6fee1SDeepak Saxena select ARM_AMBA 2574af6fee1SDeepak Saxena select ARM_VIC 2586d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 2591da0c89cSRussell King select HAVE_SCHED_CLOCK 260c5a0adb5SRussell King select ICST 26189df1272SKevin Hilman select GENERIC_CLOCKEVENTS 262bbeddc43SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 263f4b8b319SRussell King select PLAT_VERSATILE 264e3887714SRussell King select ARM_TIMER_SP804 2654af6fee1SDeepak Saxena help 2664af6fee1SDeepak Saxena This enables support for ARM Ltd Versatile board. 2674af6fee1SDeepak Saxena 268ceade897SRussell Kingconfig ARCH_VEXPRESS 269ceade897SRussell King bool "ARM Ltd. Versatile Express family" 270ceade897SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 271ceade897SRussell King select ARM_AMBA 272ceade897SRussell King select ARM_TIMER_SP804 2736d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 274ceade897SRussell King select GENERIC_CLOCKEVENTS 275ceade897SRussell King select HAVE_CLK 2760af85ddaSRussell King select HAVE_SCHED_CLOCK 277ceade897SRussell King select ICST 278ceade897SRussell King select PLAT_VERSATILE 279ceade897SRussell King help 280ceade897SRussell King This enables support for the ARM Ltd Versatile Express boards. 281ceade897SRussell King 2828fc5ffa0SAndrew Victorconfig ARCH_AT91 2838fc5ffa0SAndrew Victor bool "Atmel AT91" 284f373e8c0SRyan Mallon select ARCH_REQUIRE_GPIOLIB 28593686ae8SDavid Brownell select HAVE_CLK 2864af6fee1SDeepak Saxena help 2872b3b3516SAndrew Victor This enables support for systems based on the Atmel AT91RM9200, 2882b3b3516SAndrew Victor AT91SAM9 and AT91CAP9 processors. 2894af6fee1SDeepak Saxena 290ccf50e23SRussell Kingconfig ARCH_BCMRING 291ccf50e23SRussell King bool "Broadcom BCMRING" 292ccf50e23SRussell King depends on MMU 293ccf50e23SRussell King select CPU_V6 294ccf50e23SRussell King select ARM_AMBA 2956d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 296ccf50e23SRussell King select GENERIC_CLOCKEVENTS 297ccf50e23SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 298ccf50e23SRussell King help 299ccf50e23SRussell King Support for Broadcom's BCMRing platform. 300ccf50e23SRussell King 3011da177e4SLinus Torvaldsconfig ARCH_CLPS711X 3024af6fee1SDeepak Saxena bool "Cirrus Logic CLPS711x/EP721x-based" 303c750815eSRussell King select CPU_ARM720T 3045cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 305f999b8bdSMartin Michlmayr help 306f999b8bdSMartin Michlmayr Support for Cirrus Logic 711x/721x based boards. 3071da177e4SLinus Torvalds 308d94f944eSAnton Vorontsovconfig ARCH_CNS3XXX 309d94f944eSAnton Vorontsov bool "Cavium Networks CNS3XXX family" 310d94f944eSAnton Vorontsov select CPU_V6 311d94f944eSAnton Vorontsov select GENERIC_CLOCKEVENTS 312d94f944eSAnton Vorontsov select ARM_GIC 3130b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 3145f32f7a0SAnton Vorontsov select PCI_DOMAINS if PCI 315d94f944eSAnton Vorontsov help 316d94f944eSAnton Vorontsov Support for Cavium Networks CNS3XXX platform. 317d94f944eSAnton Vorontsov 318788c9700SRussell Kingconfig ARCH_GEMINI 319788c9700SRussell King bool "Cortina Systems Gemini" 320788c9700SRussell King select CPU_FA526 321788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 3225cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 323788c9700SRussell King help 324788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 325788c9700SRussell King 3261da177e4SLinus Torvaldsconfig ARCH_EBSA110 3271da177e4SLinus Torvalds bool "EBSA-110" 328c750815eSRussell King select CPU_SA110 329f7e68bbfSRussell King select ISA 330c5eb2a2bSRussell King select NO_IOPORT 3315cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 3321da177e4SLinus Torvalds help 3331da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 334f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 3351da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 3361da177e4SLinus Torvalds parallel port. 3371da177e4SLinus Torvalds 338e7736d47SLennert Buytenhekconfig ARCH_EP93XX 339e7736d47SLennert Buytenhek bool "EP93xx-based" 340c750815eSRussell King select CPU_ARM920T 341e7736d47SLennert Buytenhek select ARM_AMBA 342e7736d47SLennert Buytenhek select ARM_VIC 3436d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 3447444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 345eb33575cSMel Gorman select ARCH_HAS_HOLES_MEMORYMODEL 3465cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 347e7736d47SLennert Buytenhek help 348e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 349e7736d47SLennert Buytenhek 3501da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 3511da177e4SLinus Torvalds bool "FootBridge" 352c750815eSRussell King select CPU_SA110 3531da177e4SLinus Torvalds select FOOTBRIDGE 3545cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 355f999b8bdSMartin Michlmayr help 356f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 357f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 3581da177e4SLinus Torvalds 359788c9700SRussell Kingconfig ARCH_MXC 360788c9700SRussell King bool "Freescale MXC/iMX-based" 361788c9700SRussell King select GENERIC_CLOCKEVENTS 362788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 3636d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 364788c9700SRussell King help 365788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 366788c9700SRussell King 3671d3f33d5SShawn Guoconfig ARCH_MXS 3681d3f33d5SShawn Guo bool "Freescale MXS-based" 3691d3f33d5SShawn Guo select GENERIC_CLOCKEVENTS 3701d3f33d5SShawn Guo select ARCH_REQUIRE_GPIOLIB 3711d3f33d5SShawn Guo select COMMON_CLKDEV 3721d3f33d5SShawn Guo help 3731d3f33d5SShawn Guo Support for Freescale MXS-based family of processors 3741d3f33d5SShawn Guo 3757bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX 3767bd0f2f5Sdmitry pervushin bool "Freescale STMP3xxx" 3777bd0f2f5Sdmitry pervushin select CPU_ARM926T 3786d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 3797bd0f2f5Sdmitry pervushin select ARCH_REQUIRE_GPIOLIB 3807bd0f2f5Sdmitry pervushin select GENERIC_CLOCKEVENTS 3817bd0f2f5Sdmitry pervushin select USB_ARCH_HAS_EHCI 3827bd0f2f5Sdmitry pervushin help 3837bd0f2f5Sdmitry pervushin Support for systems based on the Freescale 3xxx CPUs. 3847bd0f2f5Sdmitry pervushin 3854af6fee1SDeepak Saxenaconfig ARCH_NETX 3864af6fee1SDeepak Saxena bool "Hilscher NetX based" 387c750815eSRussell King select CPU_ARM926T 3884af6fee1SDeepak Saxena select ARM_VIC 3892fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 390f999b8bdSMartin Michlmayr help 3914af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 3924af6fee1SDeepak Saxena 3934af6fee1SDeepak Saxenaconfig ARCH_H720X 3944af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 395c750815eSRussell King select CPU_ARM720T 3964af6fee1SDeepak Saxena select ISA_DMA_API 3975cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 3984af6fee1SDeepak Saxena help 3994af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 4004af6fee1SDeepak Saxena 4013b938be6SRussell Kingconfig ARCH_IOP13XX 4023b938be6SRussell King bool "IOP13xx-based" 4033b938be6SRussell King depends on MMU 404c750815eSRussell King select CPU_XSC3 4053b938be6SRussell King select PLAT_IOP 4063b938be6SRussell King select PCI 4073b938be6SRussell King select ARCH_SUPPORTS_MSI 4088d5796d2SLennert Buytenhek select VMSPLIT_1G 4093b938be6SRussell King help 4103b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 4113b938be6SRussell King 4123f7e5815SLennert Buytenhekconfig ARCH_IOP32X 4133f7e5815SLennert Buytenhek bool "IOP32x-based" 414a4f7e763SRussell King depends on MMU 415c750815eSRussell King select CPU_XSCALE 4167ae1f7ecSLennert Buytenhek select PLAT_IOP 417f7e68bbfSRussell King select PCI 418bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 419f999b8bdSMartin Michlmayr help 4203f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 4213f7e5815SLennert Buytenhek processors. 4223f7e5815SLennert Buytenhek 4233f7e5815SLennert Buytenhekconfig ARCH_IOP33X 4243f7e5815SLennert Buytenhek bool "IOP33x-based" 4253f7e5815SLennert Buytenhek depends on MMU 426c750815eSRussell King select CPU_XSCALE 4277ae1f7ecSLennert Buytenhek select PLAT_IOP 4283f7e5815SLennert Buytenhek select PCI 429bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 4303f7e5815SLennert Buytenhek help 4313f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 4321da177e4SLinus Torvalds 4333b938be6SRussell Kingconfig ARCH_IXP23XX 4343b938be6SRussell King bool "IXP23XX-based" 435588ef769SDan Williams depends on MMU 436c750815eSRussell King select CPU_XSC3 437285f5fa7SDan Williams select PCI 4385cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 439285f5fa7SDan Williams help 4403b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvaldsconfig ARCH_IXP2000 4431da177e4SLinus Torvalds bool "IXP2400/2800-based" 444a4f7e763SRussell King depends on MMU 445c750815eSRussell King select CPU_XSCALE 446f7e68bbfSRussell King select PCI 4475cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 448f999b8bdSMartin Michlmayr help 449f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 4501da177e4SLinus Torvalds 4513b938be6SRussell Kingconfig ARCH_IXP4XX 4523b938be6SRussell King bool "IXP4xx-based" 453a4f7e763SRussell King depends on MMU 454c750815eSRussell King select CPU_XSCALE 4558858e9afSMilan Svoboda select GENERIC_GPIO 4563b938be6SRussell King select GENERIC_CLOCKEVENTS 4575b0d495cSRussell King select HAVE_SCHED_CLOCK 4580b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 459485bdde7SRussell King select DMABOUNCE if PCI 460c4713074SLennert Buytenhek help 4613b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 462c4713074SLennert Buytenhek 463edabd38eSSaeed Bisharaconfig ARCH_DOVE 464edabd38eSSaeed Bishara bool "Marvell Dove" 465edabd38eSSaeed Bishara select PCI 466edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 467edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 468edabd38eSSaeed Bishara select PLAT_ORION 469edabd38eSSaeed Bishara help 470edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 471edabd38eSSaeed Bishara 472651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 473651c74c7SSaeed Bishara bool "Marvell Kirkwood" 474c750815eSRussell King select CPU_FEROCEON 475651c74c7SSaeed Bishara select PCI 476a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 477651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 478651c74c7SSaeed Bishara select PLAT_ORION 479651c74c7SSaeed Bishara help 480651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 481651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 482651c74c7SSaeed Bishara 483788c9700SRussell Kingconfig ARCH_LOKI 484788c9700SRussell King bool "Marvell Loki (88RC8480)" 485788c9700SRussell King select CPU_FEROCEON 486788c9700SRussell King select GENERIC_CLOCKEVENTS 487788c9700SRussell King select PLAT_ORION 488788c9700SRussell King help 489788c9700SRussell King Support for the Marvell Loki (88RC8480) SoC. 490788c9700SRussell King 49140805949SKevin Wellsconfig ARCH_LPC32XX 49240805949SKevin Wells bool "NXP LPC32XX" 49340805949SKevin Wells select CPU_ARM926T 49440805949SKevin Wells select ARCH_REQUIRE_GPIOLIB 49540805949SKevin Wells select HAVE_IDE 49640805949SKevin Wells select ARM_AMBA 49740805949SKevin Wells select USB_ARCH_HAS_OHCI 4986d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 49940805949SKevin Wells select GENERIC_TIME 50040805949SKevin Wells select GENERIC_CLOCKEVENTS 50140805949SKevin Wells help 50240805949SKevin Wells Support for the NXP LPC32XX family of processors 50340805949SKevin Wells 504788c9700SRussell Kingconfig ARCH_MV78XX0 505788c9700SRussell King bool "Marvell MV78xx0" 506788c9700SRussell King select CPU_FEROCEON 507788c9700SRussell King select PCI 508a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 509788c9700SRussell King select GENERIC_CLOCKEVENTS 510788c9700SRussell King select PLAT_ORION 511788c9700SRussell King help 512788c9700SRussell King Support for the following Marvell MV78xx0 series SoCs: 513788c9700SRussell King MV781x0, MV782x0. 514788c9700SRussell King 515788c9700SRussell Kingconfig ARCH_ORION5X 516788c9700SRussell King bool "Marvell Orion" 517788c9700SRussell King depends on MMU 518788c9700SRussell King select CPU_FEROCEON 519788c9700SRussell King select PCI 520a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 521788c9700SRussell King select GENERIC_CLOCKEVENTS 522788c9700SRussell King select PLAT_ORION 523788c9700SRussell King help 524788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 525788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 526788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 527788c9700SRussell King 528788c9700SRussell Kingconfig ARCH_MMP 5292f7e8faeSHaojian Zhuang bool "Marvell PXA168/910/MMP2" 530788c9700SRussell King depends on MMU 531788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 5326d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 533788c9700SRussell King select GENERIC_CLOCKEVENTS 53428bb7bc6SRussell King select HAVE_SCHED_CLOCK 535788c9700SRussell King select TICK_ONESHOT 536788c9700SRussell King select PLAT_PXA 5370bd86961SHaojian Zhuang select SPARSE_IRQ 538788c9700SRussell King help 5392f7e8faeSHaojian Zhuang Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 540788c9700SRussell King 541c53c9cf6SAndrew Victorconfig ARCH_KS8695 542c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 543c750815eSRussell King select CPU_ARM922T 54472880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 5455cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 546c53c9cf6SAndrew Victor help 547c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 548c53c9cf6SAndrew Victor System-on-Chip devices. 549c53c9cf6SAndrew Victor 5509918cda5SUwe Kleine-Königconfig ARCH_NS9XXX 5519918cda5SUwe Kleine-König bool "NetSilicon NS9xxx" 552c750815eSRussell King select CPU_ARM926T 553689f2a01SUwe Kleine-König select GENERIC_GPIO 554c0bb87f7SUwe Kleine-König select GENERIC_CLOCKEVENTS 5559483a578SDavid Brownell select HAVE_CLK 5569918cda5SUwe Kleine-König help 5579918cda5SUwe Kleine-König Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 5589918cda5SUwe Kleine-König System. 5599918cda5SUwe Kleine-König 5609918cda5SUwe Kleine-König <http://www.digi.com/products/microprocessors/index.jsp> 5619918cda5SUwe Kleine-König 562788c9700SRussell Kingconfig ARCH_W90X900 563788c9700SRussell King bool "Nuvoton W90X900 CPU" 564788c9700SRussell King select CPU_ARM926T 565c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 5666d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 56758b5369eSwanzongshun select GENERIC_CLOCKEVENTS 568777f9bebSLennert Buytenhek help 569a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 570a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 571a8bc4eadSwanzongshun the ARM series product line, you can login the following 572a8bc4eadSwanzongshun link address to know more. 573a8bc4eadSwanzongshun 574a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 575a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 576585cf175STzachi Perelstein 577a62e9030Swanzongshunconfig ARCH_NUC93X 578a62e9030Swanzongshun bool "Nuvoton NUC93X CPU" 579a62e9030Swanzongshun select CPU_ARM926T 5806d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 581a62e9030Swanzongshun help 582a62e9030Swanzongshun Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 583a62e9030Swanzongshun low-power and high performance MPEG-4/JPEG multimedia controller chip. 584a62e9030Swanzongshun 585c5f80065SErik Gillingconfig ARCH_TEGRA 586c5f80065SErik Gilling bool "NVIDIA Tegra" 5874073723aSRussell King select CLKDEV_LOOKUP 588c5f80065SErik Gilling select GENERIC_TIME 589c5f80065SErik Gilling select GENERIC_CLOCKEVENTS 590c5f80065SErik Gilling select GENERIC_GPIO 591c5f80065SErik Gilling select HAVE_CLK 592e3f4c0abSRussell King select HAVE_SCHED_CLOCK 593c5f80065SErik Gilling select ARCH_HAS_BARRIERS if CACHE_L2X0 5947056d423SColin Cross select ARCH_HAS_CPUFREQ 595c5f80065SErik Gilling help 596c5f80065SErik Gilling This enables support for NVIDIA Tegra based systems (Tegra APX, 597c5f80065SErik Gilling Tegra 6xx and Tegra 2 series). 598c5f80065SErik Gilling 5994af6fee1SDeepak Saxenaconfig ARCH_PNX4008 6004af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 601c750815eSRussell King select CPU_ARM926T 6026d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 6035cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 6044af6fee1SDeepak Saxena help 6054af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 6064af6fee1SDeepak Saxena 6071da177e4SLinus Torvaldsconfig ARCH_PXA 6082c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 609a4f7e763SRussell King depends on MMU 610034d2f5aSAl Viro select ARCH_MTD_XIP 61189c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6126d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 6137444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 614981d0f39SEric Miao select GENERIC_CLOCKEVENTS 6157ce83018SRussell King select HAVE_SCHED_CLOCK 616a88264c2SRussell King select TICK_ONESHOT 617bd5ce433SEric Miao select PLAT_PXA 6186ac6b817SHaojian Zhuang select SPARSE_IRQ 619f999b8bdSMartin Michlmayr help 6202c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 6211da177e4SLinus Torvalds 622788c9700SRussell Kingconfig ARCH_MSM 623788c9700SRussell King bool "Qualcomm MSM" 6244b536b8dSSteve Muckle select HAVE_CLK 62549cbe786SEric Miao select GENERIC_CLOCKEVENTS 626923a081cSPavel Machek select ARCH_REQUIRE_GPIOLIB 62749cbe786SEric Miao help 6284b53eb4fSDaniel Walker Support for Qualcomm MSM/QSD based systems. This runs on the 6294b53eb4fSDaniel Walker apps processor of the MSM/QSD and depends on a shared memory 6304b53eb4fSDaniel Walker interface to the modem processor which runs the baseband 6314b53eb4fSDaniel Walker stack and controls some vital subsystems 6324b53eb4fSDaniel Walker (clock and power control, etc). 63349cbe786SEric Miao 634c793c1b0SMagnus Dammconfig ARCH_SHMOBILE 6356d72ad35SPaul Mundt bool "Renesas SH-Mobile / R-Mobile" 6366d72ad35SPaul Mundt select HAVE_CLK 6375e93c6b4SPaul Mundt select CLKDEV_LOOKUP 6386d72ad35SPaul Mundt select GENERIC_CLOCKEVENTS 6396d72ad35SPaul Mundt select NO_IOPORT 6406d72ad35SPaul Mundt select SPARSE_IRQ 641*60f1435cSMagnus Damm select MULTI_IRQ_HANDLER 642c793c1b0SMagnus Damm help 6436d72ad35SPaul Mundt Support for Renesas's SH-Mobile and R-Mobile ARM platforms. 644c793c1b0SMagnus Damm 6451da177e4SLinus Torvaldsconfig ARCH_RPC 6461da177e4SLinus Torvalds bool "RiscPC" 6471da177e4SLinus Torvalds select ARCH_ACORN 6481da177e4SLinus Torvalds select FIQ 6491da177e4SLinus Torvalds select TIMER_ACORN 650a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 651341eb781SBen Dooks select HAVE_PATA_PLATFORM 652065909b9SRussell King select ISA_DMA_API 6535ea81769SAl Viro select NO_IOPORT 65407f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 6555cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 6561da177e4SLinus Torvalds help 6571da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 6581da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 6591da177e4SLinus Torvalds 6601da177e4SLinus Torvaldsconfig ARCH_SA1100 6611da177e4SLinus Torvalds bool "SA1100-based" 662c750815eSRussell King select CPU_SA1100 663f7e68bbfSRussell King select ISA 66405944d74SRussell King select ARCH_SPARSEMEM_ENABLE 665034d2f5aSAl Viro select ARCH_MTD_XIP 66689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6671937f5b9SRussell King select CPU_FREQ 6683e238be2SRussell King select GENERIC_CLOCKEVENTS 6699483a578SDavid Brownell select HAVE_CLK 6705094b92fSRussell King select HAVE_SCHED_CLOCK 6713e238be2SRussell King select TICK_ONESHOT 6727444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 673f999b8bdSMartin Michlmayr help 674f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 6751da177e4SLinus Torvalds 6761da177e4SLinus Torvaldsconfig ARCH_S3C2410 67763b1f51bSBen Dooks bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450" 6780a938b97SDavid Brownell select GENERIC_GPIO 6799d56c02aSBen Dooks select ARCH_HAS_CPUFREQ 6809483a578SDavid Brownell select HAVE_CLK 6815cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 68220676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 6831da177e4SLinus Torvalds help 6841da177e4SLinus Torvalds Samsung S3C2410X CPU based systems, such as the Simtec Electronics 6851da177e4SLinus Torvalds BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 686f6c8965aSMartin Michlmayr the Samsung SMDK2410 development board (and derivatives). 6871da177e4SLinus Torvalds 68863b1f51bSBen Dooks Note, the S3C2416 and the S3C2450 are so close that they even share 68963b1f51bSBen Dooks the same SoC ID code. This means that there is no seperate machine 69063b1f51bSBen Dooks directory (no arch/arm/mach-s3c2450) as the S3C2416 was first. 69163b1f51bSBen Dooks 692a08ab637SBen Dooksconfig ARCH_S3C64XX 693a08ab637SBen Dooks bool "Samsung S3C64XX" 69489f1fa08SBen Dooks select PLAT_SAMSUNG 69589f0ce72SBen Dooks select CPU_V6 69689f0ce72SBen Dooks select ARM_VIC 697a08ab637SBen Dooks select HAVE_CLK 69889f0ce72SBen Dooks select NO_IOPORT 6995cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 70089c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 70189f0ce72SBen Dooks select ARCH_REQUIRE_GPIOLIB 70289f0ce72SBen Dooks select SAMSUNG_CLKSRC 70389f0ce72SBen Dooks select SAMSUNG_IRQ_VIC_TIMER 70489f0ce72SBen Dooks select SAMSUNG_IRQ_UART 70589f0ce72SBen Dooks select S3C_GPIO_TRACK 70689f0ce72SBen Dooks select S3C_GPIO_PULL_UPDOWN 70789f0ce72SBen Dooks select S3C_GPIO_CFG_S3C24XX 70889f0ce72SBen Dooks select S3C_GPIO_CFG_S3C64XX 70989f0ce72SBen Dooks select S3C_DEV_NAND 71089f0ce72SBen Dooks select USB_ARCH_HAS_OHCI 71189f0ce72SBen Dooks select SAMSUNG_GPIOLIB_4BIT 71220676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 713c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 714a08ab637SBen Dooks help 715a08ab637SBen Dooks Samsung S3C64XX series based systems 716a08ab637SBen Dooks 71749b7a491SKukjin Kimconfig ARCH_S5P64X0 71849b7a491SKukjin Kim bool "Samsung S5P6440 S5P6450" 719c4ffccddSKukjin Kim select CPU_V6 720c4ffccddSKukjin Kim select GENERIC_GPIO 721c4ffccddSKukjin Kim select HAVE_CLK 722c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 723925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 72420676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 725754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 726c4ffccddSKukjin Kim help 72749b7a491SKukjin Kim Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440, 72849b7a491SKukjin Kim SMDK6450. 729c4ffccddSKukjin Kim 730550db7f1SKukjin Kimconfig ARCH_S5P6442 731550db7f1SKukjin Kim bool "Samsung S5P6442" 732550db7f1SKukjin Kim select CPU_V6 733550db7f1SKukjin Kim select GENERIC_GPIO 734550db7f1SKukjin Kim select HAVE_CLK 735925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 736c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 737550db7f1SKukjin Kim help 738550db7f1SKukjin Kim Samsung S5P6442 CPU based systems 739550db7f1SKukjin Kim 740acc84707SMarek Szyprowskiconfig ARCH_S5PC100 741acc84707SMarek Szyprowski bool "Samsung S5PC100" 7425a7652f2SByungho Min select GENERIC_GPIO 7435a7652f2SByungho Min select HAVE_CLK 7445a7652f2SByungho Min select CPU_V7 745d6d502faSKukjin Kim select ARM_L1_CACHE_SHIFT_6 746925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 74720676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 748754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 749c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 7505a7652f2SByungho Min help 751acc84707SMarek Szyprowski Samsung S5PC100 series based systems 7525a7652f2SByungho Min 753170f4e42SKukjin Kimconfig ARCH_S5PV210 754170f4e42SKukjin Kim bool "Samsung S5PV210/S5PC110" 755170f4e42SKukjin Kim select CPU_V7 756eecb6a84SKyungmin Park select ARCH_SPARSEMEM_ENABLE 757170f4e42SKukjin Kim select GENERIC_GPIO 758170f4e42SKukjin Kim select HAVE_CLK 759170f4e42SKukjin Kim select ARM_L1_CACHE_SHIFT_6 760d8144aeaSJaecheol Lee select ARCH_HAS_CPUFREQ 761925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 76220676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 763754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 764c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 765170f4e42SKukjin Kim help 766170f4e42SKukjin Kim Samsung S5PV210/S5PC110 series based systems 767170f4e42SKukjin Kim 768cc0e72b8SChanghwan Younconfig ARCH_S5PV310 769cc0e72b8SChanghwan Youn bool "Samsung S5PV310/S5PC210" 770cc0e72b8SChanghwan Youn select CPU_V7 771f567fa6fSKyungmin Park select ARCH_SPARSEMEM_ENABLE 772cc0e72b8SChanghwan Youn select GENERIC_GPIO 773cc0e72b8SChanghwan Youn select HAVE_CLK 774cc0e72b8SChanghwan Youn select GENERIC_CLOCKEVENTS 775754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 77620676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 777c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 778cc0e72b8SChanghwan Youn help 779cc0e72b8SChanghwan Youn Samsung S5PV310 series based systems 780cc0e72b8SChanghwan Youn 7811da177e4SLinus Torvaldsconfig ARCH_SHARK 7821da177e4SLinus Torvalds bool "Shark" 783c750815eSRussell King select CPU_SA110 784f7e68bbfSRussell King select ISA 785f7e68bbfSRussell King select ISA_DMA 7863bca103aSNicolas Pitre select ZONE_DMA 787f7e68bbfSRussell King select PCI 7885cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 789f999b8bdSMartin Michlmayr help 790f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 791f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 7921da177e4SLinus Torvalds 79383ef3338SHans J. Kochconfig ARCH_TCC_926 79483ef3338SHans J. Koch bool "Telechips TCC ARM926-based systems" 79583ef3338SHans J. Koch select CPU_ARM926T 79683ef3338SHans J. Koch select HAVE_CLK 7976d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 79883ef3338SHans J. Koch select GENERIC_CLOCKEVENTS 79983ef3338SHans J. Koch help 80083ef3338SHans J. Koch Support for Telechips TCC ARM926-based systems. 80183ef3338SHans J. Koch 8021da177e4SLinus Torvaldsconfig ARCH_LH7A40X 8031da177e4SLinus Torvalds bool "Sharp LH7A40X" 804c750815eSRussell King select CPU_ARM922T 8054ba3f7c5SRussell King select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 8065cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 8071da177e4SLinus Torvalds help 8081da177e4SLinus Torvalds Say Y here for systems based on one of the Sharp LH7A40X 8091da177e4SLinus Torvalds System on a Chip processors. These CPUs include an ARM922T 8101da177e4SLinus Torvalds core with a wide array of integrated devices for 8111da177e4SLinus Torvalds hand-held and low-power applications. 8121da177e4SLinus Torvalds 813d98aac75SLinus Walleijconfig ARCH_U300 814d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 815d98aac75SLinus Walleij depends on MMU 816d98aac75SLinus Walleij select CPU_ARM926T 8175c21b7caSRussell King select HAVE_SCHED_CLOCK 818bc581770SLinus Walleij select HAVE_TCM 819d98aac75SLinus Walleij select ARM_AMBA 820d98aac75SLinus Walleij select ARM_VIC 821d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 8226d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 823d98aac75SLinus Walleij select GENERIC_GPIO 824d98aac75SLinus Walleij help 825d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 826d98aac75SLinus Walleij 827ccf50e23SRussell Kingconfig ARCH_U8500 828ccf50e23SRussell King bool "ST-Ericsson U8500 Series" 829ccf50e23SRussell King select CPU_V7 830ccf50e23SRussell King select ARM_AMBA 831ccf50e23SRussell King select GENERIC_CLOCKEVENTS 8326d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 83394bdc0e2SRabin Vincent select ARCH_REQUIRE_GPIOLIB 8347c1a70e9SMartin Persson select ARCH_HAS_CPUFREQ 835ccf50e23SRussell King help 836ccf50e23SRussell King Support for ST-Ericsson's Ux500 architecture 837ccf50e23SRussell King 838ccf50e23SRussell Kingconfig ARCH_NOMADIK 839ccf50e23SRussell King bool "STMicroelectronics Nomadik" 840ccf50e23SRussell King select ARM_AMBA 841ccf50e23SRussell King select ARM_VIC 842ccf50e23SRussell King select CPU_ARM926T 8436d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 844ccf50e23SRussell King select GENERIC_CLOCKEVENTS 845ccf50e23SRussell King select ARCH_REQUIRE_GPIOLIB 846ccf50e23SRussell King help 847ccf50e23SRussell King Support for the Nomadik platform by ST-Ericsson 848ccf50e23SRussell King 8497c6337e2SKevin Hilmanconfig ARCH_DAVINCI 8507c6337e2SKevin Hilman bool "TI DaVinci" 8517c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 852dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 8533bca103aSNicolas Pitre select ZONE_DMA 8549232fcc9SKevin Hilman select HAVE_IDE 8556d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 85620e9969bSDavid Brownell select GENERIC_ALLOCATOR 857ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 8587c6337e2SKevin Hilman help 8597c6337e2SKevin Hilman Support for TI's DaVinci platform. 8607c6337e2SKevin Hilman 8613b938be6SRussell Kingconfig ARCH_OMAP 8623b938be6SRussell King bool "TI OMAP" 8639483a578SDavid Brownell select HAVE_CLK 8647444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 86589c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 86606cad098SKevin Hilman select GENERIC_CLOCKEVENTS 867dc548fbbSRussell King select HAVE_SCHED_CLOCK 8689af915daSSriram select ARCH_HAS_HOLES_MEMORYMODEL 8693b938be6SRussell King help 8706e457bb0SLennert Buytenhek Support for TI's OMAP platform (OMAP1/2/3/4). 8713b938be6SRussell King 872cee37e50Sviresh kumarconfig PLAT_SPEAR 873cee37e50Sviresh kumar bool "ST SPEAr" 874cee37e50Sviresh kumar select ARM_AMBA 875cee37e50Sviresh kumar select ARCH_REQUIRE_GPIOLIB 8766d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 877cee37e50Sviresh kumar select GENERIC_CLOCKEVENTS 878cee37e50Sviresh kumar select HAVE_CLK 879cee37e50Sviresh kumar help 880cee37e50Sviresh kumar Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). 881cee37e50Sviresh kumar 8821da177e4SLinus Torvaldsendchoice 8831da177e4SLinus Torvalds 884ccf50e23SRussell King# 885ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname. However, plat-* 886ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the 887ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source. 888ccf50e23SRussell King# 88995b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig" 89095b8f20fSRussell King 89195b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig" 89295b8f20fSRussell King 89395b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig" 89495b8f20fSRussell King 8951da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 8961da177e4SLinus Torvalds 897d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig" 898d94f944eSAnton Vorontsov 89995b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig" 90095b8f20fSRussell King 90195b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig" 90295b8f20fSRussell King 903e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 904e7736d47SLennert Buytenhek 9051da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 9061da177e4SLinus Torvalds 90759d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 90859d3a193SPaulius Zaleckas 90995b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig" 91095b8f20fSRussell King 9111da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 9121da177e4SLinus Torvalds 9133f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 9143f7e5815SLennert Buytenhek 9153f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 9161da177e4SLinus Torvalds 917285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 918285f5fa7SDan Williams 9191da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 9221da177e4SLinus Torvalds 923c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 924c4713074SLennert Buytenhek 92595b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig" 92695b8f20fSRussell King 92795b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig" 92895b8f20fSRussell King 92995b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig" 93095b8f20fSRussell King 931777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig" 932777f9bebSLennert Buytenhek 93340805949SKevin Wellssource "arch/arm/mach-lpc32xx/Kconfig" 93440805949SKevin Wells 93595b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig" 93695b8f20fSRussell King 937794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 938794d15b2SStanislav Samsonov 93995b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig" 9401da177e4SLinus Torvalds 9411d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig" 9421d3f33d5SShawn Guo 94395b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig" 94449cbe786SEric Miao 94595b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig" 94695b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig" 94795b8f20fSRussell King 94895b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig" 9491da177e4SLinus Torvalds 950d91a8910SRussell Kingsource "arch/arm/mach-nuc93x/Kconfig" 951d91a8910SRussell King 952d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 953d48af15eSTony Lindgren 954d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 9551da177e4SLinus Torvalds 9561dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 9571dbae815STony Lindgren 9589dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 959585cf175STzachi Perelstein 96095b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig" 96195b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig" 9621da177e4SLinus Torvalds 96395b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig" 96495b8f20fSRussell King 96595b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig" 96695b8f20fSRussell King 96795b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig" 968edabd38eSSaeed Bishara 969cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 970a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 971c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig" 972a21765a7SBen Dooks 973cee37e50Sviresh kumarsource "arch/arm/plat-spear/Kconfig" 974a21765a7SBen Dooks 97583ef3338SHans J. Kochsource "arch/arm/plat-tcc/Kconfig" 97683ef3338SHans J. Koch 977a21765a7SBen Dooksif ARCH_S3C2410 978a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig" 9791da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig" 980a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 981f1290a49SYauhen Kharuzhysource "arch/arm/mach-s3c2416/Kconfig" 982a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 983e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig" 984a21765a7SBen Dooksendif 9851da177e4SLinus Torvalds 986a08ab637SBen Dooksif ARCH_S3C64XX 987431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig" 988a08ab637SBen Dooksendif 989a08ab637SBen Dooks 99049b7a491SKukjin Kimsource "arch/arm/mach-s5p64x0/Kconfig" 991c4ffccddSKukjin Kim 992550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig" 9937bd0f2f5Sdmitry pervushin 9945a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 9955a7652f2SByungho Min 996170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig" 997170f4e42SKukjin Kim 998cc0e72b8SChanghwan Younsource "arch/arm/mach-s5pv310/Kconfig" 999cc0e72b8SChanghwan Youn 1000882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig" 10011da177e4SLinus Torvalds 1002882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig" 10039e73c84cSBrian Swetland 1004c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig" 1005c5f80065SErik Gilling 100695b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig" 100752c543f9SQuinn Jensen 100895b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig" 10091da177e4SLinus Torvalds 10101da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 10111da177e4SLinus Torvalds 1012ceade897SRussell Kingsource "arch/arm/mach-vexpress/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 || \ 126189c3dedfSDaniel Walker ARCH_MSM_SCORPIONMP 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 1284ed3768a8SDave Martin depends on SMP && !XIP 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 1455354e6f72Seric miaoconfig SPARSE_IRQ 1456c1ba6ba3Seric miao def_bool n 1457354e6f72Seric miao help 1458354e6f72Seric miao This enables support for sparse irqs. This is useful in general 1459354e6f72Seric miao as most CPUs have a fairly sparse array of IRQ vectors, which 1460354e6f72Seric miao the irq_desc then maps directly on to. Systems with a high 1461354e6f72Seric miao number of off-chip IRQs will want to treat this as 1462354e6f72Seric miao experimental until they have been independently verified. 1463354e6f72Seric miao 14643f22ab27SDave Hansensource "mm/Kconfig" 14653f22ab27SDave Hansen 1466c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER 1467c1b2d970SMagnus Damm int "Maximum zone order" if ARCH_SHMOBILE 1468c1b2d970SMagnus Damm range 11 64 if ARCH_SHMOBILE 1469c1b2d970SMagnus Damm default "9" if SA1111 1470c1b2d970SMagnus Damm default "11" 1471c1b2d970SMagnus Damm help 1472c1b2d970SMagnus Damm The kernel memory allocator divides physically contiguous memory 1473c1b2d970SMagnus Damm blocks into "zones", where each zone is a power of two number of 1474c1b2d970SMagnus Damm pages. This option selects the largest power of two that the kernel 1475c1b2d970SMagnus Damm keeps in the memory allocator. If you need to allocate very large 1476c1b2d970SMagnus Damm blocks of physically contiguous memory, then you may need to 1477c1b2d970SMagnus Damm increase this value. 1478c1b2d970SMagnus Damm 1479c1b2d970SMagnus Damm This config option is actually maximum order plus one. For example, 1480c1b2d970SMagnus Damm a value of 11 means that the largest free memory block is 2^10 pages. 1481c1b2d970SMagnus Damm 14821da177e4SLinus Torvaldsconfig LEDS 14831da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1484e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 14858c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 14861da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 14871da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 148873a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 148925329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1490ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 14911da177e4SLinus Torvalds help 14921da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 14931da177e4SLinus Torvalds to provide useful information about your current system status. 14941da177e4SLinus Torvalds 14951da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 14961da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 14971da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 14981da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 14991da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 15001da177e4SLinus Torvalds system, but the driver will do nothing. 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvaldsconfig LEDS_TIMER 15031da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1504eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1505eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 15061da177e4SLinus Torvalds depends on LEDS 15070567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 15081da177e4SLinus Torvalds default y if ARCH_EBSA110 15091da177e4SLinus Torvalds help 15101da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 15111da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 15121da177e4SLinus Torvalds will flash regularly to indicate that the system is still 15131da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 15141da177e4SLinus Torvalds debugging unstable kernels. 15151da177e4SLinus Torvalds 15161da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 15171da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 15181da177e4SLinus Torvalds will overrule the CPU usage LED. 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvaldsconfig LEDS_CPU 15211da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1522eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1523eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1524eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 15251da177e4SLinus Torvalds depends on LEDS 15261da177e4SLinus Torvalds help 15271da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 15281da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 15291da177e4SLinus Torvalds is not currently executing. 15301da177e4SLinus Torvalds 15311da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 15321da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 15331da177e4SLinus Torvalds will overrule the CPU usage LED. 15341da177e4SLinus Torvalds 15351da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 15361da177e4SLinus Torvalds bool 1537f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 15381da177e4SLinus Torvalds default y if !ARCH_EBSA110 1539e119bfffSRussell King select HAVE_PROC_CPU if PROC_FS 15401da177e4SLinus Torvalds help 15411da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 15421da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 15431da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 15441da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 15451da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 15461da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 15471da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 15481da177e4SLinus Torvalds 154939ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 155039ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 155139ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 155239ec58f3SLennert Buytenhek default y if CPU_FEROCEON 155339ec58f3SLennert Buytenhek help 155439ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 155539ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 155639ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 155739ec58f3SLennert Buytenhek 155839ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 155939ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 156039ec58f3SLennert Buytenhek such copy operations with large buffers. 156139ec58f3SLennert Buytenhek 156239ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 156339ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 156439ec58f3SLennert Buytenhek 156570c70d97SNicolas Pitreconfig SECCOMP 156670c70d97SNicolas Pitre bool 156770c70d97SNicolas Pitre prompt "Enable seccomp to safely compute untrusted bytecode" 156870c70d97SNicolas Pitre ---help--- 156970c70d97SNicolas Pitre This kernel feature is useful for number crunching applications 157070c70d97SNicolas Pitre that may need to compute untrusted bytecode during their 157170c70d97SNicolas Pitre execution. By using pipes or other transports made available to 157270c70d97SNicolas Pitre the process as file descriptors supporting the read/write 157370c70d97SNicolas Pitre syscalls, it's possible to isolate those applications in 157470c70d97SNicolas Pitre their own address space using seccomp. Once seccomp is 157570c70d97SNicolas Pitre enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 157670c70d97SNicolas Pitre and the task is only allowed to execute a few safe syscalls 157770c70d97SNicolas Pitre defined by each seccomp mode. 157870c70d97SNicolas Pitre 1579c743f380SNicolas Pitreconfig CC_STACKPROTECTOR 1580c743f380SNicolas Pitre bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" 15814a50bfe3SRussell King depends on EXPERIMENTAL 1582c743f380SNicolas Pitre help 1583c743f380SNicolas Pitre This option turns on the -fstack-protector GCC feature. This 1584c743f380SNicolas Pitre feature puts, at the beginning of functions, a canary value on 1585c743f380SNicolas Pitre the stack just before the return address, and validates 1586c743f380SNicolas Pitre the value just before actually returning. Stack based buffer 1587c743f380SNicolas Pitre overflows (that need to overwrite this return address) now also 1588c743f380SNicolas Pitre overwrite the canary, which gets detected and the attack is then 1589c743f380SNicolas Pitre neutralized via a kernel panic. 1590c743f380SNicolas Pitre This feature requires gcc version 4.2 or above. 1591c743f380SNicolas Pitre 159273a65b3fSUwe Kleine-Königconfig DEPRECATED_PARAM_STRUCT 159373a65b3fSUwe Kleine-König bool "Provide old way to pass kernel parameters" 159473a65b3fSUwe Kleine-König help 159573a65b3fSUwe Kleine-König This was deprecated in 2001 and announced to live on for 5 years. 159673a65b3fSUwe Kleine-König Some old boot loaders still use this way. 159773a65b3fSUwe Kleine-König 15981da177e4SLinus Torvaldsendmenu 15991da177e4SLinus Torvalds 16001da177e4SLinus Torvaldsmenu "Boot options" 16011da177e4SLinus Torvalds 16021da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 16031da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 16041da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 16051da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 16061da177e4SLinus Torvalds default "0" 16071da177e4SLinus Torvalds help 16081da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 16091da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 16101da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 16111da177e4SLinus Torvalds value in their defconfig file. 16121da177e4SLinus Torvalds 16131da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 16141da177e4SLinus Torvalds 16151da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 16161da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 16171da177e4SLinus Torvalds default "0" 16181da177e4SLinus Torvalds help 1619f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1620f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1621f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1622f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1623f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1624f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 16251da177e4SLinus Torvalds 16261da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 16271da177e4SLinus Torvalds 16281da177e4SLinus Torvaldsconfig ZBOOT_ROM 16291da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 16301da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 16311da177e4SLinus Torvalds help 16321da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 16331da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 16341da177e4SLinus Torvalds 16351da177e4SLinus Torvaldsconfig CMDLINE 16361da177e4SLinus Torvalds string "Default kernel command string" 16371da177e4SLinus Torvalds default "" 16381da177e4SLinus Torvalds help 16391da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 16401da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 16411da177e4SLinus Torvalds architectures, you should supply some command-line options at build 16421da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 16431da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 16441da177e4SLinus Torvalds 164592d2040dSAlexander Hollerconfig CMDLINE_FORCE 164692d2040dSAlexander Holler bool "Always use the default kernel command string" 164792d2040dSAlexander Holler depends on CMDLINE != "" 164892d2040dSAlexander Holler help 164992d2040dSAlexander Holler Always use the default kernel command string, even if the boot 165092d2040dSAlexander Holler loader passes other arguments to the kernel. 165192d2040dSAlexander Holler This is useful if you cannot or don't want to change the 165292d2040dSAlexander Holler command-line options your boot loader passes to the kernel. 165392d2040dSAlexander Holler 165492d2040dSAlexander Holler If unsure, say N. 165592d2040dSAlexander Holler 16561da177e4SLinus Torvaldsconfig XIP_KERNEL 16571da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 16581da177e4SLinus Torvalds depends on !ZBOOT_ROM 16591da177e4SLinus Torvalds help 16601da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 16611da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 16621da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 16631da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 16641da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 16651da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 16661da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 16671da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 16681da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 16691da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 16701da177e4SLinus Torvalds 16711da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 16721da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 16731da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 16741da177e4SLinus Torvalds 16751da177e4SLinus Torvalds If unsure, say N. 16761da177e4SLinus Torvalds 16771da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 16781da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 16791da177e4SLinus Torvalds depends on XIP_KERNEL 16801da177e4SLinus Torvalds default "0x00080000" 16811da177e4SLinus Torvalds help 16821da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 16831da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 16841da177e4SLinus Torvalds own flash usage. 16851da177e4SLinus Torvalds 1686c587e4a6SRichard Purdieconfig KEXEC 1687c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 1688c587e4a6SRichard Purdie depends on EXPERIMENTAL 1689c587e4a6SRichard Purdie help 1690c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1691c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 169201dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1693c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1694c587e4a6SRichard Purdie 1695c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1696c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1697c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 1698c587e4a6SRichard Purdie support. 1699c587e4a6SRichard Purdie 17004cd9d6f7SRichard Purdieconfig ATAGS_PROC 17014cd9d6f7SRichard Purdie bool "Export atags in procfs" 1702b98d7291SUli Luckas depends on KEXEC 1703b98d7291SUli Luckas default y 17044cd9d6f7SRichard Purdie help 17054cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 17064cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 17074cd9d6f7SRichard Purdie 1708cb5d39b3SMika Westerbergconfig CRASH_DUMP 1709cb5d39b3SMika Westerberg bool "Build kdump crash kernel (EXPERIMENTAL)" 1710cb5d39b3SMika Westerberg depends on EXPERIMENTAL 1711cb5d39b3SMika Westerberg help 1712cb5d39b3SMika Westerberg Generate crash dump after being started by kexec. This should 1713cb5d39b3SMika Westerberg be normally only set in special crash dump kernels which are 1714cb5d39b3SMika Westerberg loaded in the main kernel with kexec-tools into a specially 1715cb5d39b3SMika Westerberg reserved region and then later executed after a crash by 1716cb5d39b3SMika Westerberg kdump/kexec. The crash dump kernel must be compiled to a 1717cb5d39b3SMika Westerberg memory address not used by the main kernel 1718cb5d39b3SMika Westerberg 1719cb5d39b3SMika Westerberg For more details see Documentation/kdump/kdump.txt 1720cb5d39b3SMika Westerberg 1721e69edc79SEric Miaoconfig AUTO_ZRELADDR 1722e69edc79SEric Miao bool "Auto calculation of the decompressed kernel image address" 1723e69edc79SEric Miao depends on !ZBOOT_ROM && !ARCH_U300 1724e69edc79SEric Miao help 1725e69edc79SEric Miao ZRELADDR is the physical address where the decompressed kernel 1726e69edc79SEric Miao image will be placed. If AUTO_ZRELADDR is selected, the address 1727e69edc79SEric Miao will be determined at run-time by masking the current IP with 1728e69edc79SEric Miao 0xf8000000. This assumes the zImage being placed in the first 128MB 1729e69edc79SEric Miao from start of memory. 1730e69edc79SEric Miao 17311da177e4SLinus Torvaldsendmenu 17321da177e4SLinus Torvalds 1733ac9d7efcSRussell Kingmenu "CPU Power Management" 17341da177e4SLinus Torvalds 173589c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 17361da177e4SLinus Torvalds 17371da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 17381da177e4SLinus Torvalds 173964f102b6SYong Shenconfig CPU_FREQ_IMX 174064f102b6SYong Shen tristate "CPUfreq driver for i.MX CPUs" 174164f102b6SYong Shen depends on ARCH_MXC && CPU_FREQ 174264f102b6SYong Shen help 174364f102b6SYong Shen This enables the CPUfreq driver for i.MX CPUs. 174464f102b6SYong Shen 17451da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 17461da177e4SLinus Torvalds bool 17471da177e4SLinus Torvalds 17481da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 17491da177e4SLinus Torvalds bool 17501da177e4SLinus Torvalds 17511da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 17521da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 17531da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 17541da177e4SLinus Torvalds default y 17551da177e4SLinus Torvalds help 17561da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 17571da177e4SLinus Torvalds 17581da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 17591da177e4SLinus Torvalds 17601da177e4SLinus Torvalds If in doubt, say Y. 17611da177e4SLinus Torvalds 17629e2697ffSRussell Kingconfig CPU_FREQ_PXA 17639e2697ffSRussell King bool 17649e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 17659e2697ffSRussell King default y 17669e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 17679e2697ffSRussell King 1768b3748dddSMark Brownconfig CPU_FREQ_S3C64XX 1769b3748dddSMark Brown bool "CPUfreq support for Samsung S3C64XX CPUs" 1770b3748dddSMark Brown depends on CPU_FREQ && CPU_S3C6410 1771b3748dddSMark Brown 17729d56c02aSBen Dooksconfig CPU_FREQ_S3C 17739d56c02aSBen Dooks bool 17749d56c02aSBen Dooks help 17759d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 17769d56c02aSBen Dooks 17779d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 17784a50bfe3SRussell King bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)" 17799d56c02aSBen Dooks depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 17809d56c02aSBen Dooks select CPU_FREQ_S3C 17819d56c02aSBen Dooks help 17829d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 17839d56c02aSBen Dooks of CPUs. 17849d56c02aSBen Dooks 17859d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 17869d56c02aSBen Dooks 17879d56c02aSBen Dooks If in doubt, say N. 17889d56c02aSBen Dooks 17899d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 17904a50bfe3SRussell King bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)" 17919d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 17929d56c02aSBen Dooks help 17939d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 17949d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 17959d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 17969d56c02aSBen Dooks 17979d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 17989d56c02aSBen Dooks be built which may increase the size of the kernel image. 17999d56c02aSBen Dooks 18009d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 18019d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 18029d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 18039d56c02aSBen Dooks help 18049d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 18059d56c02aSBen Dooks 18069d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 18079d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 18089d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 18099d56c02aSBen Dooks help 18109d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 18119d56c02aSBen Dooks 1812e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 1813e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 1814e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 1815e6d197a6SBen Dooks help 1816e6d197a6SBen Dooks Export status information via debugfs. 1817e6d197a6SBen Dooks 18181da177e4SLinus Torvaldsendif 18191da177e4SLinus Torvalds 1820ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 1821ac9d7efcSRussell King 1822ac9d7efcSRussell Kingendmenu 1823ac9d7efcSRussell King 18241da177e4SLinus Torvaldsmenu "Floating point emulation" 18251da177e4SLinus Torvalds 18261da177e4SLinus Torvaldscomment "At least one emulation must be selected" 18271da177e4SLinus Torvalds 18281da177e4SLinus Torvaldsconfig FPE_NWFPE 18291da177e4SLinus Torvalds bool "NWFPE math emulation" 1830593c252aSDave Martin depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL 18311da177e4SLinus Torvalds ---help--- 18321da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 18331da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 18341da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 18351da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 18361da177e4SLinus Torvalds 18371da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 18381da177e4SLinus Torvalds early in the bootup. 18391da177e4SLinus Torvalds 18401da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 18411da177e4SLinus Torvalds bool "Support extended precision" 1842bedf142bSLennert Buytenhek depends on FPE_NWFPE 18431da177e4SLinus Torvalds help 18441da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 18451da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 18461da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 18471da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 18481da177e4SLinus Torvalds floating point emulator without any good reason. 18491da177e4SLinus Torvalds 18501da177e4SLinus Torvalds You almost surely want to say N here. 18511da177e4SLinus Torvalds 18521da177e4SLinus Torvaldsconfig FPE_FASTFPE 18531da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 18548993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 18551da177e4SLinus Torvalds ---help--- 18561da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 18571da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 18581da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 18591da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 18601da177e4SLinus Torvalds 18611da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 18621da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 18631da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 18641da177e4SLinus Torvalds choose NWFPE. 18651da177e4SLinus Torvalds 18661da177e4SLinus Torvaldsconfig VFP 18671da177e4SLinus Torvalds bool "VFP-format floating point maths" 1868c00d4ffdSRussell King depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 18691da177e4SLinus Torvalds help 18701da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 18711da177e4SLinus Torvalds if your hardware includes a VFP unit. 18721da177e4SLinus Torvalds 18731da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 18741da177e4SLinus Torvalds release notes and additional status information. 18751da177e4SLinus Torvalds 18761da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 18771da177e4SLinus Torvalds 187825ebee02SCatalin Marinasconfig VFPv3 187925ebee02SCatalin Marinas bool 188025ebee02SCatalin Marinas depends on VFP 188125ebee02SCatalin Marinas default y if CPU_V7 188225ebee02SCatalin Marinas 1883b5872db4SCatalin Marinasconfig NEON 1884b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 1885b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 1886b5872db4SCatalin Marinas help 1887b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1888b5872db4SCatalin Marinas Extension. 1889b5872db4SCatalin Marinas 18901da177e4SLinus Torvaldsendmenu 18911da177e4SLinus Torvalds 18921da177e4SLinus Torvaldsmenu "Userspace binary formats" 18931da177e4SLinus Torvalds 18941da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 18951da177e4SLinus Torvalds 18961da177e4SLinus Torvaldsconfig ARTHUR 18971da177e4SLinus Torvalds tristate "RISC OS personality" 1898704bdda0SNicolas Pitre depends on !AEABI 18991da177e4SLinus Torvalds help 19001da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 19011da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 19021da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 19031da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 19041da177e4SLinus Torvalds will be called arthur). 19051da177e4SLinus Torvalds 19061da177e4SLinus Torvaldsendmenu 19071da177e4SLinus Torvalds 19081da177e4SLinus Torvaldsmenu "Power management options" 19091da177e4SLinus Torvalds 1910eceab4acSRussell Kingsource "kernel/power/Kconfig" 19111da177e4SLinus Torvalds 1912f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 1913f4cb5700SJohannes Berg def_bool y 1914f4cb5700SJohannes Berg 19151da177e4SLinus Torvaldsendmenu 19161da177e4SLinus Torvalds 1917d5950b43SSam Ravnborgsource "net/Kconfig" 1918d5950b43SSam Ravnborg 1919ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 19201da177e4SLinus Torvalds 19211da177e4SLinus Torvaldssource "fs/Kconfig" 19221da177e4SLinus Torvalds 19231da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 19241da177e4SLinus Torvalds 19251da177e4SLinus Torvaldssource "security/Kconfig" 19261da177e4SLinus Torvalds 19271da177e4SLinus Torvaldssource "crypto/Kconfig" 19281da177e4SLinus Torvalds 19291da177e4SLinus Torvaldssource "lib/Kconfig" 1930