11da177e4SLinus Torvalds# 21da177e4SLinus Torvalds# For a description of the syntax of this configuration file, 31da177e4SLinus Torvalds# see Documentation/kbuild/kconfig-language.txt. 41da177e4SLinus Torvalds# 51da177e4SLinus Torvalds 61da177e4SLinus Torvaldsmainmenu "Linux Kernel Configuration" 71da177e4SLinus Torvalds 81da177e4SLinus Torvaldsconfig ARM 91da177e4SLinus Torvalds bool 101da177e4SLinus Torvalds default y 11e17c6d56SDavid Woodhouse select HAVE_AOUT 122064c946SAdrian Bunk select HAVE_IDE 1312b824fbSAlessandro Zummo select RTC_LIB 1475e7153aSRalf Baechle select SYS_SUPPORTS_APM_EMULATION 1524b44a66SWill Deacon select GENERIC_ATOMIC64 if (!CPU_32v6K) 1642d4b839SMathieu Desnoyers select HAVE_OPROFILE 175cbad0ebSJason Wessel select HAVE_ARCH_KGDB 183f550096SMathieu Desnoyers select HAVE_KPROBES if (!XIP_KERNEL) 199edddaa2SAnanth N Mavinakayanahalli select HAVE_KRETPROBES if (HAVE_KPROBES) 20606576ceSSteven Rostedt select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 211fe53268SDmitry Baryshkov select HAVE_GENERIC_DMA_COHERENT 22e7db7b42SAlbin Tonnerre select HAVE_KERNEL_GZIP 23e7db7b42SAlbin Tonnerre select HAVE_KERNEL_LZO 241da177e4SLinus Torvalds help 251da177e4SLinus Torvalds The ARM series is a line of low-power-consumption RISC chip designs 26f6c8965aSMartin Michlmayr licensed by ARM Ltd and targeted at embedded applications and 271da177e4SLinus Torvalds handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 281da177e4SLinus Torvalds manufactured, but legacy ARM-based PC hardware remains popular in 291da177e4SLinus Torvalds Europe. There is an ARM Linux project with a web page at 301da177e4SLinus Torvalds <http://www.arm.linux.org.uk/>. 311da177e4SLinus Torvalds 321a189b97SRussell Kingconfig HAVE_PWM 331a189b97SRussell King bool 341a189b97SRussell King 3575e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION 3675e7153aSRalf Baechle bool 3775e7153aSRalf Baechle 380a938b97SDavid Brownellconfig GENERIC_GPIO 390a938b97SDavid Brownell bool 400a938b97SDavid Brownell 41746140c7SKevin Hilmanconfig GENERIC_TIME 42746140c7SKevin Hilman bool 43746140c7SKevin Hilman 440567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS 450567a0c0SKevin Hilman bool 460567a0c0SKevin Hilman 47a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST 48a8655e83SCatalin Marinas bool 49a8655e83SCatalin Marinas depends on GENERIC_CLOCKEVENTS 50a8655e83SCatalin Marinas default y if SMP && !LOCAL_TIMERS 51a8655e83SCatalin Marinas 52bc581770SLinus Walleijconfig HAVE_TCM 53bc581770SLinus Walleij bool 54bc581770SLinus Walleij select GENERIC_ALLOCATOR 55bc581770SLinus Walleij 56e119bfffSRussell Kingconfig HAVE_PROC_CPU 57e119bfffSRussell King bool 58e119bfffSRussell King 595ea81769SAl Viroconfig NO_IOPORT 605ea81769SAl Viro bool 615ea81769SAl Viro 621da177e4SLinus Torvaldsconfig EISA 631da177e4SLinus Torvalds bool 641da177e4SLinus Torvalds ---help--- 651da177e4SLinus Torvalds The Extended Industry Standard Architecture (EISA) bus was 661da177e4SLinus Torvalds developed as an open alternative to the IBM MicroChannel bus. 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds The EISA bus provided some of the features of the IBM MicroChannel 691da177e4SLinus Torvalds bus while maintaining backward compatibility with cards made for 701da177e4SLinus Torvalds the older ISA bus. The EISA bus saw limited use between 1988 and 711da177e4SLinus Torvalds 1995 when it was made obsolete by the PCI bus. 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds Say Y here if you are building a kernel for an EISA-based machine. 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds Otherwise, say N. 761da177e4SLinus Torvalds 771da177e4SLinus Torvaldsconfig SBUS 781da177e4SLinus Torvalds bool 791da177e4SLinus Torvalds 801da177e4SLinus Torvaldsconfig MCA 811da177e4SLinus Torvalds bool 821da177e4SLinus Torvalds help 831da177e4SLinus Torvalds MicroChannel Architecture is found in some IBM PS/2 machines and 841da177e4SLinus Torvalds laptops. It is a bus system similar to PCI or ISA. See 851da177e4SLinus Torvalds <file:Documentation/mca.txt> (and especially the web page given 861da177e4SLinus Torvalds there) before attempting to build an MCA bus kernel. 871da177e4SLinus Torvalds 884a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS 894a2581a0SThomas Gleixner bool 904a2581a0SThomas Gleixner default y 914a2581a0SThomas Gleixner 92f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT 93f16fb1ecSRussell King bool 94f16fb1ecSRussell King default y 95f16fb1ecSRussell King 96f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT 97f76e9154SNicolas Pitre bool 98f76e9154SNicolas Pitre depends on !SMP 99f76e9154SNicolas Pitre default y 100f76e9154SNicolas Pitre 101f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT 102f16fb1ecSRussell King bool 103f16fb1ecSRussell King default y 104f16fb1ecSRussell King 1057ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT 1067ad1bcb2SRussell King bool 1077ad1bcb2SRussell King default y 1087ad1bcb2SRussell King 1094a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND 1104a2581a0SThomas Gleixner bool 1114a2581a0SThomas Gleixner default y 1124a2581a0SThomas Gleixner 1134a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE 1144a2581a0SThomas Gleixner bool 1154a2581a0SThomas Gleixner default y 1164a2581a0SThomas Gleixner 11795c354feSNick Pigginconfig GENERIC_LOCKBREAK 11895c354feSNick Piggin bool 11995c354feSNick Piggin default y 12095c354feSNick Piggin depends on SMP && PREEMPT 12195c354feSNick Piggin 1221da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK 1231da177e4SLinus Torvalds bool 1241da177e4SLinus Torvalds default y 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM 1271da177e4SLinus Torvalds bool 1281da177e4SLinus Torvalds 129f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 130f0d1b0b3SDavid Howells bool 131f0d1b0b3SDavid Howells 132f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 133f0d1b0b3SDavid Howells bool 134f0d1b0b3SDavid Howells 13589c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ 13689c52ed4SBen Dooks bool 13789c52ed4SBen Dooks help 13889c52ed4SBen Dooks Internal node to signify that the ARCH has CPUFREQ support 13989c52ed4SBen Dooks and that the relevant menu configurations are displayed for 14089c52ed4SBen Dooks it. 14189c52ed4SBen Dooks 142b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT 143b89c3b16SAkinobu Mita bool 144b89c3b16SAkinobu Mita default y 145b89c3b16SAkinobu Mita 1461da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY 1471da177e4SLinus Torvalds bool 1481da177e4SLinus Torvalds default y 1491da177e4SLinus Torvalds 150a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC 151a08b6b79Sviro@ZenIV.linux.org.uk bool 152a08b6b79Sviro@ZenIV.linux.org.uk 1535ac6da66SChristoph Lameterconfig ZONE_DMA 1545ac6da66SChristoph Lameter bool 1555ac6da66SChristoph Lameter 1561da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA 1571da177e4SLinus Torvalds bool 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvaldsconfig FIQ 1601da177e4SLinus Torvalds bool 1611da177e4SLinus Torvalds 162034d2f5aSAl Viroconfig ARCH_MTD_XIP 163034d2f5aSAl Viro bool 164034d2f5aSAl Viro 16560a752efSPaulius Zaleckasconfig GENERIC_HARDIRQS_NO__DO_IRQ 16660a752efSPaulius Zaleckas def_bool y 16760a752efSPaulius Zaleckas 168c0ffa3a9SMathieu Desnoyersif OPROFILE 169c0ffa3a9SMathieu Desnoyers 170c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARMV6 171c0ffa3a9SMathieu Desnoyers def_bool y 172c0ffa3a9SMathieu Desnoyers depends on CPU_V6 && !SMP 173c0ffa3a9SMathieu Desnoyers select OPROFILE_ARM11_CORE 174c0ffa3a9SMathieu Desnoyers 175c0ffa3a9SMathieu Desnoyersconfig OPROFILE_MPCORE 176c0ffa3a9SMathieu Desnoyers def_bool y 177c0ffa3a9SMathieu Desnoyers depends on CPU_V6 && SMP 178c0ffa3a9SMathieu Desnoyers select OPROFILE_ARM11_CORE 179c0ffa3a9SMathieu Desnoyers 180c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARM11_CORE 181c0ffa3a9SMathieu Desnoyers bool 182c0ffa3a9SMathieu Desnoyers 183d7ac4e28SJean PIHETconfig OPROFILE_ARMV7 184d7ac4e28SJean PIHET def_bool y 185d7ac4e28SJean PIHET depends on CPU_V7 && !SMP 186d7ac4e28SJean PIHET bool 187d7ac4e28SJean PIHET 188c0ffa3a9SMathieu Desnoyersendif 189c0ffa3a9SMathieu Desnoyers 190c760fc19SHyok S. Choiconfig VECTORS_BASE 191c760fc19SHyok S. Choi hex 1926afd6faeSHyok S. Choi default 0xffff0000 if MMU || CPU_HIGH_VECTOR 193c760fc19SHyok S. Choi default DRAM_BASE if REMAP_VECTORS_TO_RAM 194c760fc19SHyok S. Choi default 0x00000000 195c760fc19SHyok S. Choi help 196c760fc19SHyok S. Choi The base address of exception vectors. 197c760fc19SHyok S. Choi 1981da177e4SLinus Torvaldssource "init/Kconfig" 1991da177e4SLinus Torvalds 200dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 201dc52ddc0SMatt Helsley 2021da177e4SLinus Torvaldsmenu "System Type" 2031da177e4SLinus Torvalds 2043c427975SHyok S. Choiconfig MMU 2053c427975SHyok S. Choi bool "MMU-based Paged Memory Management Support" 2063c427975SHyok S. Choi default y 2073c427975SHyok S. Choi help 2083c427975SHyok S. Choi Select if you want MMU-based virtualised addressing space 2093c427975SHyok S. Choi support by paged memory management. If unsure, say 'Y'. 2103c427975SHyok S. Choi 2111da177e4SLinus Torvaldschoice 2121da177e4SLinus Torvalds prompt "ARM system type" 2136a0e2430SCatalin Marinas default ARCH_VERSATILE 2141da177e4SLinus Torvalds 2154af6fee1SDeepak Saxenaconfig ARCH_AAEC2000 2164af6fee1SDeepak Saxena bool "Agilent AAEC-2000 based" 217c750815eSRussell King select CPU_ARM920T 2184af6fee1SDeepak Saxena select ARM_AMBA 2199483a578SDavid Brownell select HAVE_CLK 2204af6fee1SDeepak Saxena help 2214af6fee1SDeepak Saxena This enables support for systems based on the Agilent AAEC-2000 2224af6fee1SDeepak Saxena 2234af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR 2244af6fee1SDeepak Saxena bool "ARM Ltd. Integrator family" 2254af6fee1SDeepak Saxena select ARM_AMBA 22689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 2279483a578SDavid Brownell select HAVE_CLK 228d72fbdf0SRussell King select COMMON_CLKDEV 2294af6fee1SDeepak Saxena select ICST525 2304af6fee1SDeepak Saxena help 2314af6fee1SDeepak Saxena Support for ARM's Integrator platform. 2324af6fee1SDeepak Saxena 2334af6fee1SDeepak Saxenaconfig ARCH_REALVIEW 2344af6fee1SDeepak Saxena bool "ARM Ltd. RealView family" 2354af6fee1SDeepak Saxena select ARM_AMBA 2369483a578SDavid Brownell select HAVE_CLK 237cf30fb4aSRussell King select COMMON_CLKDEV 2384af6fee1SDeepak Saxena select ICST307 23985802afeSCatalin Marinas select GENERIC_TIME 240ae30ceacSCatalin Marinas select GENERIC_CLOCKEVENTS 241eb7fffa3SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 2424af6fee1SDeepak Saxena help 2434af6fee1SDeepak Saxena This enables support for ARM Ltd RealView boards. 2444af6fee1SDeepak Saxena 2454af6fee1SDeepak Saxenaconfig ARCH_VERSATILE 2464af6fee1SDeepak Saxena bool "ARM Ltd. Versatile family" 2474af6fee1SDeepak Saxena select ARM_AMBA 2484af6fee1SDeepak Saxena select ARM_VIC 2499483a578SDavid Brownell select HAVE_CLK 25071a06da0SRussell King select COMMON_CLKDEV 2514af6fee1SDeepak Saxena select ICST307 252b49c87c2SKevin Hilman select GENERIC_TIME 25389df1272SKevin Hilman select GENERIC_CLOCKEVENTS 254bbeddc43SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 2554af6fee1SDeepak Saxena help 2564af6fee1SDeepak Saxena This enables support for ARM Ltd Versatile board. 2574af6fee1SDeepak Saxena 2588fc5ffa0SAndrew Victorconfig ARCH_AT91 2598fc5ffa0SAndrew Victor bool "Atmel AT91" 2600a938b97SDavid Brownell select GENERIC_GPIO 261f373e8c0SRyan Mallon select ARCH_REQUIRE_GPIOLIB 26293686ae8SDavid Brownell select HAVE_CLK 2634af6fee1SDeepak Saxena help 2642b3b3516SAndrew Victor This enables support for systems based on the Atmel AT91RM9200, 2652b3b3516SAndrew Victor AT91SAM9 and AT91CAP9 processors. 2664af6fee1SDeepak Saxena 2671da177e4SLinus Torvaldsconfig ARCH_CLPS711X 2684af6fee1SDeepak Saxena bool "Cirrus Logic CLPS711x/EP721x-based" 269c750815eSRussell King select CPU_ARM720T 270f999b8bdSMartin Michlmayr help 271f999b8bdSMartin Michlmayr Support for Cirrus Logic 711x/721x based boards. 2721da177e4SLinus Torvalds 273788c9700SRussell Kingconfig ARCH_GEMINI 274788c9700SRussell King bool "Cortina Systems Gemini" 275788c9700SRussell King select CPU_FA526 276788c9700SRussell King select GENERIC_GPIO 277788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 278788c9700SRussell King help 279788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 280788c9700SRussell King 2811da177e4SLinus Torvaldsconfig ARCH_EBSA110 2821da177e4SLinus Torvalds bool "EBSA-110" 283c750815eSRussell King select CPU_SA110 284f7e68bbfSRussell King select ISA 285c5eb2a2bSRussell King select NO_IOPORT 2861da177e4SLinus Torvalds help 2871da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 288f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 2891da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 2901da177e4SLinus Torvalds parallel port. 2911da177e4SLinus Torvalds 292e7736d47SLennert Buytenhekconfig ARCH_EP93XX 293e7736d47SLennert Buytenhek bool "EP93xx-based" 294c750815eSRussell King select CPU_ARM920T 295e7736d47SLennert Buytenhek select ARM_AMBA 296e7736d47SLennert Buytenhek select ARM_VIC 2974e9f9fd5SHerbert Valerio Riedel select GENERIC_GPIO 2989483a578SDavid Brownell select HAVE_CLK 299ae696fd5SRussell King select COMMON_CLKDEV 3007444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 301eb33575cSMel Gorman select ARCH_HAS_HOLES_MEMORYMODEL 302e7736d47SLennert Buytenhek help 303e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 304e7736d47SLennert Buytenhek 3051da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 3061da177e4SLinus Torvalds bool "FootBridge" 307c750815eSRussell King select CPU_SA110 3081da177e4SLinus Torvalds select FOOTBRIDGE 309f999b8bdSMartin Michlmayr help 310f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 311f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 3121da177e4SLinus Torvalds 313788c9700SRussell Kingconfig ARCH_MXC 314788c9700SRussell King bool "Freescale MXC/iMX-based" 315788c9700SRussell King select GENERIC_TIME 316788c9700SRussell King select GENERIC_CLOCKEVENTS 317788c9700SRussell King select ARCH_MTD_XIP 318788c9700SRussell King select GENERIC_GPIO 319788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 320a2ab67faSRussell King select HAVE_CLK 321788c9700SRussell King help 322788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 323788c9700SRussell King 3247bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX 3257bd0f2f5Sdmitry pervushin bool "Freescale STMP3xxx" 3267bd0f2f5Sdmitry pervushin select CPU_ARM926T 3277bd0f2f5Sdmitry pervushin select HAVE_CLK 3287bd0f2f5Sdmitry pervushin select COMMON_CLKDEV 3297bd0f2f5Sdmitry pervushin select ARCH_REQUIRE_GPIOLIB 3307bd0f2f5Sdmitry pervushin select GENERIC_TIME 3317bd0f2f5Sdmitry pervushin select GENERIC_CLOCKEVENTS 3327bd0f2f5Sdmitry pervushin select GENERIC_GPIO 3337bd0f2f5Sdmitry pervushin select USB_ARCH_HAS_EHCI 3347bd0f2f5Sdmitry pervushin help 3357bd0f2f5Sdmitry pervushin Support for systems based on the Freescale 3xxx CPUs. 3367bd0f2f5Sdmitry pervushin 3374af6fee1SDeepak Saxenaconfig ARCH_NETX 3384af6fee1SDeepak Saxena bool "Hilscher NetX based" 339c750815eSRussell King select CPU_ARM926T 3404af6fee1SDeepak Saxena select ARM_VIC 3412fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 34221edecd3SUwe Kleine-König select GENERIC_TIME 343f999b8bdSMartin Michlmayr help 3444af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 3454af6fee1SDeepak Saxena 3464af6fee1SDeepak Saxenaconfig ARCH_H720X 3474af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 348c750815eSRussell King select CPU_ARM720T 3494af6fee1SDeepak Saxena select ISA_DMA_API 3504af6fee1SDeepak Saxena help 3514af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 3524af6fee1SDeepak Saxena 35328ad94ecSAlessandro Rubiniconfig ARCH_NOMADIK 35428ad94ecSAlessandro Rubini bool "STMicroelectronics Nomadik" 35528ad94ecSAlessandro Rubini select ARM_AMBA 35628ad94ecSAlessandro Rubini select ARM_VIC 35728ad94ecSAlessandro Rubini select CPU_ARM926T 35828ad94ecSAlessandro Rubini select HAVE_CLK 35928ad94ecSAlessandro Rubini select COMMON_CLKDEV 36028ad94ecSAlessandro Rubini select GENERIC_TIME 36128ad94ecSAlessandro Rubini select GENERIC_CLOCKEVENTS 3622ec1d359SAlessandro Rubini select GENERIC_GPIO 3632ec1d359SAlessandro Rubini select ARCH_REQUIRE_GPIOLIB 36428ad94ecSAlessandro Rubini help 36528ad94ecSAlessandro Rubini Support for the Nomadik platform by ST-Ericsson 36628ad94ecSAlessandro Rubini 3673b938be6SRussell Kingconfig ARCH_IOP13XX 3683b938be6SRussell King bool "IOP13xx-based" 3693b938be6SRussell King depends on MMU 370c750815eSRussell King select CPU_XSC3 3713b938be6SRussell King select PLAT_IOP 3723b938be6SRussell King select PCI 3733b938be6SRussell King select ARCH_SUPPORTS_MSI 3748d5796d2SLennert Buytenhek select VMSPLIT_1G 3753b938be6SRussell King help 3763b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 3773b938be6SRussell King 3783f7e5815SLennert Buytenhekconfig ARCH_IOP32X 3793f7e5815SLennert Buytenhek bool "IOP32x-based" 380a4f7e763SRussell King depends on MMU 381c750815eSRussell King select CPU_XSCALE 3827ae1f7ecSLennert Buytenhek select PLAT_IOP 383f7e68bbfSRussell King select PCI 38463f385cdSArnaud Patard select GENERIC_GPIO 385bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 386f999b8bdSMartin Michlmayr help 3873f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 3883f7e5815SLennert Buytenhek processors. 3893f7e5815SLennert Buytenhek 3903f7e5815SLennert Buytenhekconfig ARCH_IOP33X 3913f7e5815SLennert Buytenhek bool "IOP33x-based" 3923f7e5815SLennert Buytenhek depends on MMU 393c750815eSRussell King select CPU_XSCALE 3947ae1f7ecSLennert Buytenhek select PLAT_IOP 3953f7e5815SLennert Buytenhek select PCI 39663f385cdSArnaud Patard select GENERIC_GPIO 397bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 3983f7e5815SLennert Buytenhek help 3993f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 4001da177e4SLinus Torvalds 4013b938be6SRussell Kingconfig ARCH_IXP23XX 4023b938be6SRussell King bool "IXP23XX-based" 403588ef769SDan Williams depends on MMU 404c750815eSRussell King select CPU_XSC3 405285f5fa7SDan Williams select PCI 406285f5fa7SDan Williams help 4073b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvaldsconfig ARCH_IXP2000 4101da177e4SLinus Torvalds bool "IXP2400/2800-based" 411a4f7e763SRussell King depends on MMU 412c750815eSRussell King select CPU_XSCALE 413f7e68bbfSRussell King select PCI 414f999b8bdSMartin Michlmayr help 415f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 4161da177e4SLinus Torvalds 4173b938be6SRussell Kingconfig ARCH_IXP4XX 4183b938be6SRussell King bool "IXP4xx-based" 419a4f7e763SRussell King depends on MMU 420c750815eSRussell King select CPU_XSCALE 4218858e9afSMilan Svoboda select GENERIC_GPIO 4223b938be6SRussell King select GENERIC_TIME 4233b938be6SRussell King select GENERIC_CLOCKEVENTS 424485bdde7SRussell King select DMABOUNCE if PCI 425c4713074SLennert Buytenhek help 4263b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 427c4713074SLennert Buytenhek 4281da177e4SLinus Torvaldsconfig ARCH_L7200 4291da177e4SLinus Torvalds bool "LinkUp-L7200" 430c750815eSRussell King select CPU_ARM720T 4311da177e4SLinus Torvalds select FIQ 4321da177e4SLinus Torvalds help 4331da177e4SLinus Torvalds Say Y here if you intend to run this kernel on a LinkUp Systems 4341da177e4SLinus Torvalds L7200 Software Development Board which uses an ARM720T processor. 4351da177e4SLinus Torvalds Information on this board can be obtained at: 4361da177e4SLinus Torvalds 4371da177e4SLinus Torvalds <http://www.linkupsys.com/> 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds If you have any questions or comments about the Linux kernel port 4401da177e4SLinus Torvalds to this board, send e-mail to <sjhill@cotw.com>. 4411da177e4SLinus Torvalds 442edabd38eSSaeed Bisharaconfig ARCH_DOVE 443edabd38eSSaeed Bishara bool "Marvell Dove" 444edabd38eSSaeed Bishara select PCI 445edabd38eSSaeed Bishara select GENERIC_GPIO 446edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 447edabd38eSSaeed Bishara select GENERIC_TIME 448edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 449edabd38eSSaeed Bishara select PLAT_ORION 450edabd38eSSaeed Bishara help 451edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 452edabd38eSSaeed Bishara 453651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 454651c74c7SSaeed Bishara bool "Marvell Kirkwood" 455c750815eSRussell King select CPU_FEROCEON 456651c74c7SSaeed Bishara select PCI 4574c213430SLennert Buytenhek select GENERIC_GPIO 458a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 459651c74c7SSaeed Bishara select GENERIC_TIME 460651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 461651c74c7SSaeed Bishara select PLAT_ORION 462651c74c7SSaeed Bishara help 463651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 464651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 465651c74c7SSaeed Bishara 466788c9700SRussell Kingconfig ARCH_LOKI 467788c9700SRussell King bool "Marvell Loki (88RC8480)" 468788c9700SRussell King select CPU_FEROCEON 469788c9700SRussell King select GENERIC_TIME 470788c9700SRussell King select GENERIC_CLOCKEVENTS 471788c9700SRussell King select PLAT_ORION 472788c9700SRussell King help 473788c9700SRussell King Support for the Marvell Loki (88RC8480) SoC. 474788c9700SRussell King 475788c9700SRussell Kingconfig ARCH_MV78XX0 476788c9700SRussell King bool "Marvell MV78xx0" 477788c9700SRussell King select CPU_FEROCEON 478788c9700SRussell King select PCI 479788c9700SRussell King select GENERIC_GPIO 480a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 481788c9700SRussell King select GENERIC_TIME 482788c9700SRussell King select GENERIC_CLOCKEVENTS 483788c9700SRussell King select PLAT_ORION 484788c9700SRussell King help 485788c9700SRussell King Support for the following Marvell MV78xx0 series SoCs: 486788c9700SRussell King MV781x0, MV782x0. 487788c9700SRussell King 488788c9700SRussell Kingconfig ARCH_ORION5X 489788c9700SRussell King bool "Marvell Orion" 490788c9700SRussell King depends on MMU 491788c9700SRussell King select CPU_FEROCEON 492788c9700SRussell King select PCI 493788c9700SRussell King select GENERIC_GPIO 494a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 495788c9700SRussell King select GENERIC_TIME 496788c9700SRussell King select GENERIC_CLOCKEVENTS 497788c9700SRussell King select PLAT_ORION 498788c9700SRussell King help 499788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 500788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 501788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 502788c9700SRussell King 503788c9700SRussell Kingconfig ARCH_MMP 504788c9700SRussell King bool "Marvell PXA168/910" 505788c9700SRussell King depends on MMU 506788c9700SRussell King select GENERIC_GPIO 507788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 508788c9700SRussell King select HAVE_CLK 509788c9700SRussell King select COMMON_CLKDEV 510788c9700SRussell King select GENERIC_TIME 511788c9700SRussell King select GENERIC_CLOCKEVENTS 512788c9700SRussell King select TICK_ONESHOT 513788c9700SRussell King select PLAT_PXA 514788c9700SRussell King help 515788c9700SRussell King Support for Marvell's PXA168/910 processor line. 516788c9700SRussell King 517c53c9cf6SAndrew Victorconfig ARCH_KS8695 518c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 519c750815eSRussell King select CPU_ARM922T 5208a87a996SAndrew Victor select GENERIC_GPIO 52172880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 522c53c9cf6SAndrew Victor help 523c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 524c53c9cf6SAndrew Victor System-on-Chip devices. 525c53c9cf6SAndrew Victor 5269918cda5SUwe Kleine-Königconfig ARCH_NS9XXX 5279918cda5SUwe Kleine-König bool "NetSilicon NS9xxx" 528c750815eSRussell King select CPU_ARM926T 529689f2a01SUwe Kleine-König select GENERIC_GPIO 530cef5975dSUwe Kleine-König select GENERIC_TIME 531c0bb87f7SUwe Kleine-König select GENERIC_CLOCKEVENTS 5329483a578SDavid Brownell select HAVE_CLK 5339918cda5SUwe Kleine-König help 5349918cda5SUwe Kleine-König Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 5359918cda5SUwe Kleine-König System. 5369918cda5SUwe Kleine-König 5379918cda5SUwe Kleine-König <http://www.digi.com/products/microprocessors/index.jsp> 5389918cda5SUwe Kleine-König 539788c9700SRussell Kingconfig ARCH_W90X900 540788c9700SRussell King bool "Nuvoton W90X900 CPU" 541788c9700SRussell King select CPU_ARM926T 542c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 543c52d3d68Swanzongshun select GENERIC_GPIO 544d2c24195Swanzongshun select HAVE_CLK 5450e4a34bbSwanzongshun select COMMON_CLKDEV 54658b5369eSwanzongshun select GENERIC_TIME 54758b5369eSwanzongshun select GENERIC_CLOCKEVENTS 548777f9bebSLennert Buytenhek help 549a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 550a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 551a8bc4eadSwanzongshun the ARM series product line, you can login the following 552a8bc4eadSwanzongshun link address to know more. 553a8bc4eadSwanzongshun 554a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 555a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 556585cf175STzachi Perelstein 5574af6fee1SDeepak Saxenaconfig ARCH_PNX4008 5584af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 559c750815eSRussell King select CPU_ARM926T 5609483a578SDavid Brownell select HAVE_CLK 5614af6fee1SDeepak Saxena help 5624af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 5634af6fee1SDeepak Saxena 5641da177e4SLinus Torvaldsconfig ARCH_PXA 5652c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 566a4f7e763SRussell King depends on MMU 567034d2f5aSAl Viro select ARCH_MTD_XIP 56889c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 5690a938b97SDavid Brownell select GENERIC_GPIO 5709483a578SDavid Brownell select HAVE_CLK 5718c3abc7dSRussell King select COMMON_CLKDEV 5727444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 57345cf5eefSNicolas Pitre select GENERIC_TIME 574981d0f39SEric Miao select GENERIC_CLOCKEVENTS 575a88264c2SRussell King select TICK_ONESHOT 576bd5ce433SEric Miao select PLAT_PXA 577f999b8bdSMartin Michlmayr help 5782c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 5791da177e4SLinus Torvalds 580788c9700SRussell Kingconfig ARCH_MSM 581788c9700SRussell King bool "Qualcomm MSM" 582788c9700SRussell King select CPU_V6 58349cbe786SEric Miao select GENERIC_TIME 58449cbe786SEric Miao select GENERIC_CLOCKEVENTS 58549cbe786SEric Miao help 586788c9700SRussell King Support for Qualcomm MSM7K based systems. This runs on the ARM11 587788c9700SRussell King apps processor of the MSM7K and depends on a shared memory 588788c9700SRussell King interface to the ARM9 modem processor which runs the baseband stack 589788c9700SRussell King and controls some vital subsystems (clock and power control, etc). 59049cbe786SEric Miao 5911da177e4SLinus Torvaldsconfig ARCH_RPC 5921da177e4SLinus Torvalds bool "RiscPC" 5931da177e4SLinus Torvalds select ARCH_ACORN 5941da177e4SLinus Torvalds select FIQ 5951da177e4SLinus Torvalds select TIMER_ACORN 596a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 597341eb781SBen Dooks select HAVE_PATA_PLATFORM 598065909b9SRussell King select ISA_DMA_API 5995ea81769SAl Viro select NO_IOPORT 60007f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 6011da177e4SLinus Torvalds help 6021da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 6031da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvaldsconfig ARCH_SA1100 6061da177e4SLinus Torvalds bool "SA1100-based" 607c750815eSRussell King select CPU_SA1100 608f7e68bbfSRussell King select ISA 60905944d74SRussell King select ARCH_SPARSEMEM_ENABLE 610034d2f5aSAl Viro select ARCH_MTD_XIP 61189c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6121937f5b9SRussell King select CPU_FREQ 6130a938b97SDavid Brownell select GENERIC_GPIO 614d142b6e7SRussell King select GENERIC_TIME 6153e238be2SRussell King select GENERIC_CLOCKEVENTS 6169483a578SDavid Brownell select HAVE_CLK 6173e238be2SRussell King select TICK_ONESHOT 6187444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 619f999b8bdSMartin Michlmayr help 620f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 6211da177e4SLinus Torvalds 6221da177e4SLinus Torvaldsconfig ARCH_S3C2410 623e4d06e39SBen Dooks bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" 6240a938b97SDavid Brownell select GENERIC_GPIO 6259d56c02aSBen Dooks select ARCH_HAS_CPUFREQ 6269483a578SDavid Brownell select HAVE_CLK 6271da177e4SLinus Torvalds help 6281da177e4SLinus Torvalds Samsung S3C2410X CPU based systems, such as the Simtec Electronics 6291da177e4SLinus Torvalds BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 630f6c8965aSMartin Michlmayr the Samsung SMDK2410 development board (and derivatives). 6311da177e4SLinus Torvalds 632a08ab637SBen Dooksconfig ARCH_S3C64XX 633a08ab637SBen Dooks bool "Samsung S3C64XX" 634a08ab637SBen Dooks select GENERIC_GPIO 635a08ab637SBen Dooks select HAVE_CLK 63689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 637a08ab637SBen Dooks help 638a08ab637SBen Dooks Samsung S3C64XX series based systems 639a08ab637SBen Dooks 6405a7652f2SByungho Minconfig ARCH_S5PC1XX 6415a7652f2SByungho Min bool "Samsung S5PC1XX" 6425a7652f2SByungho Min select GENERIC_GPIO 6435a7652f2SByungho Min select HAVE_CLK 6445a7652f2SByungho Min select CPU_V7 6455a7652f2SByungho Min help 6465a7652f2SByungho Min Samsung S5PC1XX series based systems 6475a7652f2SByungho Min 6481da177e4SLinus Torvaldsconfig ARCH_SHARK 6491da177e4SLinus Torvalds bool "Shark" 650c750815eSRussell King select CPU_SA110 651f7e68bbfSRussell King select ISA 652f7e68bbfSRussell King select ISA_DMA 6533bca103aSNicolas Pitre select ZONE_DMA 654f7e68bbfSRussell King select PCI 655f999b8bdSMartin Michlmayr help 656f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 657f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 6581da177e4SLinus Torvalds 6591da177e4SLinus Torvaldsconfig ARCH_LH7A40X 6601da177e4SLinus Torvalds bool "Sharp LH7A40X" 661c750815eSRussell King select CPU_ARM922T 6624ba3f7c5SRussell King select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM 6634ba3f7c5SRussell King select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 6641da177e4SLinus Torvalds help 6651da177e4SLinus Torvalds Say Y here for systems based on one of the Sharp LH7A40X 6661da177e4SLinus Torvalds System on a Chip processors. These CPUs include an ARM922T 6671da177e4SLinus Torvalds core with a wide array of integrated devices for 6681da177e4SLinus Torvalds hand-held and low-power applications. 6691da177e4SLinus Torvalds 670d98aac75SLinus Walleijconfig ARCH_U300 671d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 672d98aac75SLinus Walleij depends on MMU 673d98aac75SLinus Walleij select CPU_ARM926T 674bc581770SLinus Walleij select HAVE_TCM 675d98aac75SLinus Walleij select ARM_AMBA 676d98aac75SLinus Walleij select ARM_VIC 677d98aac75SLinus Walleij select GENERIC_TIME 678d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 679d98aac75SLinus Walleij select HAVE_CLK 680d98aac75SLinus Walleij select COMMON_CLKDEV 681d98aac75SLinus Walleij select GENERIC_GPIO 682d98aac75SLinus Walleij help 683d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 684d98aac75SLinus Walleij 6857c6337e2SKevin Hilmanconfig ARCH_DAVINCI 6867c6337e2SKevin Hilman bool "TI DaVinci" 687c750815eSRussell King select CPU_ARM926T 6887c6337e2SKevin Hilman select GENERIC_TIME 6897c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 6903d9edf09SVladimir Barinov select GENERIC_GPIO 691dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 6929483a578SDavid Brownell select HAVE_CLK 6933bca103aSNicolas Pitre select ZONE_DMA 6949232fcc9SKevin Hilman select HAVE_IDE 695c5b736d0SKevin Hilman select COMMON_CLKDEV 69620e9969bSDavid Brownell select GENERIC_ALLOCATOR 697ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 6987c6337e2SKevin Hilman help 6997c6337e2SKevin Hilman Support for TI's DaVinci platform. 7007c6337e2SKevin Hilman 7013b938be6SRussell Kingconfig ARCH_OMAP 7023b938be6SRussell King bool "TI OMAP" 7033b938be6SRussell King select GENERIC_GPIO 7049483a578SDavid Brownell select HAVE_CLK 7057444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 70689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 7073b938be6SRussell King select GENERIC_TIME 70806cad098SKevin Hilman select GENERIC_CLOCKEVENTS 7093b938be6SRussell King help 7103b938be6SRussell King Support for TI's OMAP platform (OMAP1 and OMAP2). 7113b938be6SRussell King 7126288e28dSLeo Chenconfig ARCH_BCMRING 7136288e28dSLeo Chen bool "Broadcom BCMRING" 7146288e28dSLeo Chen depends on MMU 7156288e28dSLeo Chen select CPU_V6 7166288e28dSLeo Chen select ARM_AMBA 7176288e28dSLeo Chen select COMMON_CLKDEV 7186288e28dSLeo Chen select GENERIC_TIME 7196288e28dSLeo Chen select GENERIC_CLOCKEVENTS 7206288e28dSLeo Chen select ARCH_WANT_OPTIONAL_GPIOLIB 7216288e28dSLeo Chen help 7226288e28dSLeo Chen Support for Broadcom's BCMRing platform. 7236288e28dSLeo Chen 724850265e8SSrinidhi Kasagarconfig ARCH_U8500 725850265e8SSrinidhi Kasagar bool "ST-Ericsson U8500 Series" 726850265e8SSrinidhi Kasagar select CPU_V7 727850265e8SSrinidhi Kasagar select ARM_AMBA 728850265e8SSrinidhi Kasagar select GENERIC_TIME 729850265e8SSrinidhi Kasagar select GENERIC_CLOCKEVENTS 730850265e8SSrinidhi Kasagar select COMMON_CLKDEV 731850265e8SSrinidhi Kasagar help 732850265e8SSrinidhi Kasagar Support for ST-Ericsson's Ux500 architecture 733850265e8SSrinidhi Kasagar 7341da177e4SLinus Torvaldsendchoice 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 7371da177e4SLinus Torvalds 738e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 739e7736d47SLennert Buytenhek 7401da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 7411da177e4SLinus Torvalds 74259d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 74359d3a193SPaulius Zaleckas 7441da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 7451da177e4SLinus Torvalds 7463f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 7473f7e5815SLennert Buytenhek 7483f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 7491da177e4SLinus Torvalds 750285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 751285f5fa7SDan Williams 7521da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 7531da177e4SLinus Torvalds 7541da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 7551da177e4SLinus Torvalds 756c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 757c4713074SLennert Buytenhek 758777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig" 759777f9bebSLennert Buytenhek 760794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 761794d15b2SStanislav Samsonov 7621da177e4SLinus Torvaldssource "arch/arm/mach-pxa/Kconfig" 763bd5ce433SEric Miaosource "arch/arm/plat-pxa/Kconfig" 7641da177e4SLinus Torvalds 76549cbe786SEric Miaosource "arch/arm/mach-mmp/Kconfig" 76649cbe786SEric Miao 7671da177e4SLinus Torvaldssource "arch/arm/mach-sa1100/Kconfig" 7681da177e4SLinus Torvalds 769d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 770d48af15eSTony Lindgren 771d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 7721da177e4SLinus Torvalds 7731dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 7741dbae815STony Lindgren 7759dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 776585cf175STzachi Perelstein 777651c74c7SSaeed Bisharasource "arch/arm/mach-kirkwood/Kconfig" 7781da177e4SLinus Torvalds 779edabd38eSSaeed Bisharasource "arch/arm/mach-dove/Kconfig" 780edabd38eSSaeed Bishara 781cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 782a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 783a08ab637SBen Dookssource "arch/arm/plat-s3c64xx/Kconfig" 784d58153d8SBen Dookssource "arch/arm/plat-s3c/Kconfig" 7855a7652f2SByungho Minsource "arch/arm/plat-s5pc1xx/Kconfig" 786a21765a7SBen Dooks 787a21765a7SBen Dooksif ARCH_S3C2410 788a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig" 7891da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig" 790a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 791a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 792a21765a7SBen Dookssource "arch/arm/mach-s3c2442/Kconfig" 793e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig" 794a21765a7SBen Dooksendif 7951da177e4SLinus Torvalds 796a08ab637SBen Dooksif ARCH_S3C64XX 797a08ab637SBen Dookssource "arch/arm/mach-s3c6400/Kconfig" 798a08ab637SBen Dookssource "arch/arm/mach-s3c6410/Kconfig" 799a08ab637SBen Dooksendif 800a08ab637SBen Dooks 8017bd0f2f5Sdmitry pervushinsource "arch/arm/plat-stmp3xxx/Kconfig" 8027bd0f2f5Sdmitry pervushin 8035a7652f2SByungho Minif ARCH_S5PC1XX 8045a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 8055a7652f2SByungho Minendif 8065a7652f2SByungho Min 8071da177e4SLinus Torvaldssource "arch/arm/mach-lh7a40x/Kconfig" 8081da177e4SLinus Torvalds 8091da177e4SLinus Torvaldssource "arch/arm/mach-h720x/Kconfig" 8101da177e4SLinus Torvalds 8111da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 8121da177e4SLinus Torvalds 813038c5b60SBellido Nicolassource "arch/arm/mach-aaec2000/Kconfig" 814038c5b60SBellido Nicolas 8158ad68bbfSCatalin Marinassource "arch/arm/mach-realview/Kconfig" 8168ad68bbfSCatalin Marinas 8179d041268SAndrew Victorsource "arch/arm/mach-at91/Kconfig" 81873a59c1cSSAN People 81952c543f9SQuinn Jensensource "arch/arm/plat-mxc/Kconfig" 82052c543f9SQuinn Jensen 82128ad94ecSAlessandro Rubinisource "arch/arm/mach-nomadik/Kconfig" 82259b559d7SSrinidhi Kasagarsource "arch/arm/plat-nomadik/Kconfig" 82328ad94ecSAlessandro Rubini 824bb6d8c88SSascha Hauersource "arch/arm/mach-netx/Kconfig" 825bb6d8c88SSascha Hauer 8269918cda5SUwe Kleine-Königsource "arch/arm/mach-ns9xxx/Kconfig" 8279918cda5SUwe Kleine-König 8287c6337e2SKevin Hilmansource "arch/arm/mach-davinci/Kconfig" 8297c6337e2SKevin Hilman 830c53c9cf6SAndrew Victorsource "arch/arm/mach-ks8695/Kconfig" 831c53c9cf6SAndrew Victor 8329e73c84cSBrian Swetlandsource "arch/arm/mach-msm/Kconfig" 8339e73c84cSBrian Swetland 834d98aac75SLinus Walleijsource "arch/arm/mach-u300/Kconfig" 835d98aac75SLinus Walleij 8367ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 8377ec80ddfSwanzongshun 8386288e28dSLeo Chensource "arch/arm/mach-bcmring/Kconfig" 8396288e28dSLeo Chen 840850265e8SSrinidhi Kasagarsource "arch/arm/mach-ux500/Kconfig" 841850265e8SSrinidhi Kasagar 8421da177e4SLinus Torvalds# Definitions to make life easier 8431da177e4SLinus Torvaldsconfig ARCH_ACORN 8441da177e4SLinus Torvalds bool 8451da177e4SLinus Torvalds 8467ae1f7ecSLennert Buytenhekconfig PLAT_IOP 8477ae1f7ecSLennert Buytenhek bool 848469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 849980f2296SMikael Pettersson select GENERIC_TIME 8507ae1f7ecSLennert Buytenhek 85169b02f6aSLennert Buytenhekconfig PLAT_ORION 85269b02f6aSLennert Buytenhek bool 85369b02f6aSLennert Buytenhek 854bd5ce433SEric Miaoconfig PLAT_PXA 855bd5ce433SEric Miao bool 856bd5ce433SEric Miao 8571da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 8581da177e4SLinus Torvalds 859afe4b25eSLennert Buytenhekconfig IWMMXT 860afe4b25eSLennert Buytenhek bool "Enable iWMMXt support" 86140305a58SEric Miao depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 86240305a58SEric Miao default y if PXA27x || PXA3xx || ARCH_MMP 863afe4b25eSLennert Buytenhek help 864afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 865afe4b25eSLennert Buytenhek running on a CPU that supports it. 866afe4b25eSLennert Buytenhek 8671da177e4SLinus Torvalds# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 8681da177e4SLinus Torvaldsconfig XSCALE_PMU 8691da177e4SLinus Torvalds bool 8701da177e4SLinus Torvalds depends on CPU_XSCALE && !XSCALE_PMU_TIMER 8711da177e4SLinus Torvalds default y 8721da177e4SLinus Torvalds 8733b93e7b0SHyok S. Choiif !MMU 8743b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 8753b93e7b0SHyok S. Choiendif 8763b93e7b0SHyok S. Choi 8779cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 8789cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 8799cba3cccSCatalin Marinas depends on CPU_V6 && !SMP 8809cba3cccSCatalin Marinas help 8819cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 8829cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 8839cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 8849cba3cccSCatalin Marinas recommended workaround. 8859cba3cccSCatalin Marinas 8867ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 8877ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 8887ce236fcSCatalin Marinas depends on CPU_V7 8897ce236fcSCatalin Marinas help 8907ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 8917ce236fcSCatalin Marinas (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 8927ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 8937ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 8947ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 8957ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 8967ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 8977ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 8987ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 8997ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 9007ce236fcSCatalin Marinas available in non-secure mode. 9017ce236fcSCatalin Marinas 902855c551fSCatalin Marinasconfig ARM_ERRATA_458693 903855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 904855c551fSCatalin Marinas depends on CPU_V7 905855c551fSCatalin Marinas help 906855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 907855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 908855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 909855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 910855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 911855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 912855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 913855c551fSCatalin Marinas register may not be available in non-secure mode. 914855c551fSCatalin Marinas 9150516e464SCatalin Marinasconfig ARM_ERRATA_460075 9160516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 9170516e464SCatalin Marinas depends on CPU_V7 9180516e464SCatalin Marinas help 9190516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 9200516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 9210516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 9220516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 9230516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 9240516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 9250516e464SCatalin Marinas may not be available in non-secure mode. 9260516e464SCatalin Marinas 927*9e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369 928*9e65582aSSantosh Shilimkar bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 929*9e65582aSSantosh Shilimkar depends on CACHE_L2X0 && ARCH_OMAP4 930*9e65582aSSantosh Shilimkar help 931*9e65582aSSantosh Shilimkar The PL310 L2 cache controller implements three types of Clean & 932*9e65582aSSantosh Shilimkar Invalidate maintenance operations: by Physical Address 933*9e65582aSSantosh Shilimkar (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 934*9e65582aSSantosh Shilimkar They are architecturally defined to behave as the execution of a 935*9e65582aSSantosh Shilimkar clean operation followed immediately by an invalidate operation, 936*9e65582aSSantosh Shilimkar both performing to the same memory location. This functionality 937*9e65582aSSantosh Shilimkar is not correctly implemented in PL310 as clean lines are not 938*9e65582aSSantosh Shilimkar invalidated as a result of these operations. Note that this errata 939*9e65582aSSantosh Shilimkar uses Texas Instrument's secure monitor api. 9401da177e4SLinus Torvaldsendmenu 9411da177e4SLinus Torvalds 9421da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER 9451da177e4SLinus Torvalds int 9461da177e4SLinus Torvalds depends on SA1111 9471da177e4SLinus Torvalds default "9" 9481da177e4SLinus Torvalds 9491da177e4SLinus Torvaldsmenu "Bus support" 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvaldsconfig ARM_AMBA 9521da177e4SLinus Torvalds bool 9531da177e4SLinus Torvalds 9541da177e4SLinus Torvaldsconfig ISA 9551da177e4SLinus Torvalds bool 9561da177e4SLinus Torvalds help 9571da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 9581da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 9591da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 9601da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 9611da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 9621da177e4SLinus Torvalds 963065909b9SRussell King# Select ISA DMA controller support 9641da177e4SLinus Torvaldsconfig ISA_DMA 9651da177e4SLinus Torvalds bool 966065909b9SRussell King select ISA_DMA_API 9671da177e4SLinus Torvalds 968065909b9SRussell King# Select ISA DMA interface 9695cae841bSAl Viroconfig ISA_DMA_API 9705cae841bSAl Viro bool 9715cae841bSAl Viro 9721da177e4SLinus Torvaldsconfig PCI 973a0113a99SMike Rapoport bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE 9741da177e4SLinus Torvalds help 9751da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 9761da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 9771da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 9781da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 9791da177e4SLinus Torvalds 98036e23590SMatthew Wilcoxconfig PCI_SYSCALL 98136e23590SMatthew Wilcox def_bool PCI 98236e23590SMatthew Wilcox 9831da177e4SLinus Torvalds# Select the host bridge type 9841da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505 9851da177e4SLinus Torvalds bool 9861da177e4SLinus Torvalds depends on PCI && ARCH_SHARK 9871da177e4SLinus Torvalds default y 9881da177e4SLinus Torvalds 989a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 990a0113a99SMike Rapoport bool 991a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 992a0113a99SMike Rapoport default y 993a0113a99SMike Rapoport select DMABOUNCE 994a0113a99SMike Rapoport 9951da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 9961da177e4SLinus Torvalds 9971da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 9981da177e4SLinus Torvalds 9991da177e4SLinus Torvaldsendmenu 10001da177e4SLinus Torvalds 10011da177e4SLinus Torvaldsmenu "Kernel Features" 10021da177e4SLinus Torvalds 10030567a0c0SKevin Hilmansource "kernel/time/Kconfig" 10040567a0c0SKevin Hilman 10051da177e4SLinus Torvaldsconfig SMP 10061da177e4SLinus Torvalds bool "Symmetric Multi-Processing (EXPERIMENTAL)" 100742578c82SRussell King depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1008850265e8SSrinidhi Kasagar MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 1009bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 1010f6dd9fa5SJens Axboe select USE_GENERIC_SMP_HELPERS 1011850265e8SSrinidhi Kasagar select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 10121da177e4SLinus Torvalds help 10131da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 10141da177e4SLinus Torvalds a system with only one CPU, like most personal computers, say N. If 10151da177e4SLinus Torvalds you have a system with more than one CPU, say Y. 10161da177e4SLinus Torvalds 10171da177e4SLinus Torvalds If you say N here, the kernel will run on single and multiprocessor 10181da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 10191da177e4SLinus Torvalds you say Y here, the kernel will run on many, but not all, single 10201da177e4SLinus Torvalds processor machines. On a single processor machine, the kernel will 10211da177e4SLinus Torvalds run faster if you say N here. 10221da177e4SLinus Torvalds 102303502faaSAdrian Bunk See also <file:Documentation/i386/IO-APIC.txt>, 10241da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 10251da177e4SLinus Torvalds <http://www.linuxdoc.org/docs.html#howto>. 10261da177e4SLinus Torvalds 10271da177e4SLinus Torvalds If you don't know what to do here, say N. 10281da177e4SLinus Torvalds 1029a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1030a8cbcd92SRussell King bool 1031a8cbcd92SRussell King depends on SMP 1032a8cbcd92SRussell King help 1033a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1034a8cbcd92SRussell King 1035f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1036f32f4ce2SRussell King bool 1037f32f4ce2SRussell King depends on SMP 1038f32f4ce2SRussell King help 1039f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1040f32f4ce2SRussell King 10418d5796d2SLennert Buytenhekchoice 10428d5796d2SLennert Buytenhek prompt "Memory split" 10438d5796d2SLennert Buytenhek default VMSPLIT_3G 10448d5796d2SLennert Buytenhek help 10458d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 10468d5796d2SLennert Buytenhek 10478d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 10488d5796d2SLennert Buytenhek option alone! 10498d5796d2SLennert Buytenhek 10508d5796d2SLennert Buytenhek config VMSPLIT_3G 10518d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 10528d5796d2SLennert Buytenhek config VMSPLIT_2G 10538d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 10548d5796d2SLennert Buytenhek config VMSPLIT_1G 10558d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 10568d5796d2SLennert Buytenhekendchoice 10578d5796d2SLennert Buytenhek 10588d5796d2SLennert Buytenhekconfig PAGE_OFFSET 10598d5796d2SLennert Buytenhek hex 10608d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 10618d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 10628d5796d2SLennert Buytenhek default 0xC0000000 10638d5796d2SLennert Buytenhek 10641da177e4SLinus Torvaldsconfig NR_CPUS 10651da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 10661da177e4SLinus Torvalds range 2 32 10671da177e4SLinus Torvalds depends on SMP 10681da177e4SLinus Torvalds default "4" 10691da177e4SLinus Torvalds 1070a054a811SRussell Kingconfig HOTPLUG_CPU 1071a054a811SRussell King bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1072a054a811SRussell King depends on SMP && HOTPLUG && EXPERIMENTAL 1073a054a811SRussell King help 1074a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1075a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1076a054a811SRussell King 107737ee16aeSRussell Kingconfig LOCAL_TIMERS 107837ee16aeSRussell King bool "Use local timer interrupts" 107942578c82SRussell King depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1080850265e8SSrinidhi Kasagar REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 108137ee16aeSRussell King default y 1082850265e8SSrinidhi Kasagar select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 108337ee16aeSRussell King help 108437ee16aeSRussell King Enable support for local timers on SMP platforms, rather then the 108537ee16aeSRussell King legacy IPI broadcast method. Local timers allows the system 108637ee16aeSRussell King accounting to be spread across the timer interval, preventing a 108737ee16aeSRussell King "thundering herd" at every timer tick. 108837ee16aeSRussell King 1089d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 10901da177e4SLinus Torvalds 1091f8065813SRussell Kingconfig HZ 1092f8065813SRussell King int 1093f8065813SRussell King default 128 if ARCH_L7200 1094f8065813SRussell King default 200 if ARCH_EBSA110 || ARCH_S3C2410 1095bfe65704SRussell King default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 10965248c657SDavid Brownell default AT91_TIMER_HZ if ARCH_AT91 1097f8065813SRussell King default 100 1098f8065813SRussell King 109916c79651SCatalin Marinasconfig THUMB2_KERNEL 110016c79651SCatalin Marinas bool "Compile the kernel in Thumb-2 mode" 110116c79651SCatalin Marinas depends on CPU_V7 && EXPERIMENTAL 110216c79651SCatalin Marinas select AEABI 110316c79651SCatalin Marinas select ARM_ASM_UNIFIED 110416c79651SCatalin Marinas help 110516c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 110616c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 110716c79651SCatalin Marinas ARM-Thumb syntax is needed. 110816c79651SCatalin Marinas 110916c79651SCatalin Marinas If unsure, say N. 111016c79651SCatalin Marinas 11110becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 11120becb088SCatalin Marinas bool 11130becb088SCatalin Marinas 1114704bdda0SNicolas Pitreconfig AEABI 1115704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1116704bdda0SNicolas Pitre help 1117704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1118704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1119704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1120704bdda0SNicolas Pitre 1121704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1122704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1123704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1124704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1125704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1126704bdda0SNicolas Pitre 1127704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1128704bdda0SNicolas Pitre 11296c90c872SNicolas Pitreconfig OABI_COMPAT 1130a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 113161c484d4SNicolas Pitre depends on AEABI && EXPERIMENTAL 11326c90c872SNicolas Pitre default y 11336c90c872SNicolas Pitre help 11346c90c872SNicolas Pitre This option preserves the old syscall interface along with the 11356c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 11366c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 11376c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 11386c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 11396c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 11406c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 11416c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 11426c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 11436c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 11446c90c872SNicolas Pitre at all). If in doubt say Y. 11456c90c872SNicolas Pitre 1146eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1147e80d6a24SMel Gorman bool 1148e80d6a24SMel Gorman 114907a2f737SRussell King# Discontigmem is deprecated 11503f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE 11511da177e4SLinus Torvalds bool 11521da177e4SLinus Torvalds 115305944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 115405944d74SRussell King bool 115505944d74SRussell King 115607a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 115707a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 115807a2f737SRussell King 115905944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 116007a2f737SRussell King def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE 116105944d74SRussell King 1162c80d79d7SYasunori Gotoconfig NODES_SHIFT 1163c80d79d7SYasunori Goto int 1164c80d79d7SYasunori Goto default "4" if ARCH_LH7A40X 1165c80d79d7SYasunori Goto default "2" 1166c80d79d7SYasunori Goto depends on NEED_MULTIPLE_NODES 1167c80d79d7SYasunori Goto 1168053a96caSNicolas Pitreconfig HIGHMEM 1169053a96caSNicolas Pitre bool "High Memory Support (EXPERIMENTAL)" 1170053a96caSNicolas Pitre depends on MMU && EXPERIMENTAL 1171053a96caSNicolas Pitre help 1172053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1173053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1174053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1175053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1176053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1177053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1178053a96caSNicolas Pitre 1179053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1180053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1181053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1182053a96caSNicolas Pitre 1183053a96caSNicolas Pitre If unsure, say n. 1184053a96caSNicolas Pitre 118565cec8e3SRussell Kingconfig HIGHPTE 118665cec8e3SRussell King bool "Allocate 2nd-level pagetables from highmem" 118765cec8e3SRussell King depends on HIGHMEM 118865cec8e3SRussell King depends on !OUTER_CACHE 118965cec8e3SRussell King 11903f22ab27SDave Hansensource "mm/Kconfig" 11913f22ab27SDave Hansen 11921da177e4SLinus Torvaldsconfig LEDS 11931da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1194e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 11958c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 11961da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 11971da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 119873a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 119925329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1200ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 12011da177e4SLinus Torvalds help 12021da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 12031da177e4SLinus Torvalds to provide useful information about your current system status. 12041da177e4SLinus Torvalds 12051da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 12061da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 12071da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 12081da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 12091da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 12101da177e4SLinus Torvalds system, but the driver will do nothing. 12111da177e4SLinus Torvalds 12121da177e4SLinus Torvaldsconfig LEDS_TIMER 12131da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1214eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1215eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12161da177e4SLinus Torvalds depends on LEDS 12170567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 12181da177e4SLinus Torvalds default y if ARCH_EBSA110 12191da177e4SLinus Torvalds help 12201da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 12211da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 12221da177e4SLinus Torvalds will flash regularly to indicate that the system is still 12231da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 12241da177e4SLinus Torvalds debugging unstable kernels. 12251da177e4SLinus Torvalds 12261da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12271da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12281da177e4SLinus Torvalds will overrule the CPU usage LED. 12291da177e4SLinus Torvalds 12301da177e4SLinus Torvaldsconfig LEDS_CPU 12311da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1232eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1233eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1234eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12351da177e4SLinus Torvalds depends on LEDS 12361da177e4SLinus Torvalds help 12371da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 12381da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 12391da177e4SLinus Torvalds is not currently executing. 12401da177e4SLinus Torvalds 12411da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12421da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12431da177e4SLinus Torvalds will overrule the CPU usage LED. 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 12461da177e4SLinus Torvalds bool 1247f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 12481da177e4SLinus Torvalds default y if !ARCH_EBSA110 1249e119bfffSRussell King select HAVE_PROC_CPU if PROC_FS 12501da177e4SLinus Torvalds help 12511da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 12521da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 12531da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 12541da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 12551da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 12561da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 12571da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 12581da177e4SLinus Torvalds 125939ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 126039ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 126139ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 126239ec58f3SLennert Buytenhek default y if CPU_FEROCEON 126339ec58f3SLennert Buytenhek help 126439ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 126539ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 126639ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 126739ec58f3SLennert Buytenhek 126839ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 126939ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 127039ec58f3SLennert Buytenhek such copy operations with large buffers. 127139ec58f3SLennert Buytenhek 127239ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 127339ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 127439ec58f3SLennert Buytenhek 12751da177e4SLinus Torvaldsendmenu 12761da177e4SLinus Torvalds 12771da177e4SLinus Torvaldsmenu "Boot options" 12781da177e4SLinus Torvalds 12791da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 12801da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 12811da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 12821da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 12831da177e4SLinus Torvalds default "0" 12841da177e4SLinus Torvalds help 12851da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 12861da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 12871da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 12881da177e4SLinus Torvalds value in their defconfig file. 12891da177e4SLinus Torvalds 12901da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 12931da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 12941da177e4SLinus Torvalds default "0" 12951da177e4SLinus Torvalds help 1296f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1297f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1298f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1299f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1300f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1301f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 13021da177e4SLinus Torvalds 13031da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 13041da177e4SLinus Torvalds 13051da177e4SLinus Torvaldsconfig ZBOOT_ROM 13061da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 13071da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 13081da177e4SLinus Torvalds help 13091da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 13101da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 13111da177e4SLinus Torvalds 13121da177e4SLinus Torvaldsconfig CMDLINE 13131da177e4SLinus Torvalds string "Default kernel command string" 13141da177e4SLinus Torvalds default "" 13151da177e4SLinus Torvalds help 13161da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 13171da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 13181da177e4SLinus Torvalds architectures, you should supply some command-line options at build 13191da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 13201da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 13211da177e4SLinus Torvalds 13221da177e4SLinus Torvaldsconfig XIP_KERNEL 13231da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 13241da177e4SLinus Torvalds depends on !ZBOOT_ROM 13251da177e4SLinus Torvalds help 13261da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 13271da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 13281da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 13291da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 13301da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 13311da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 13321da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 13331da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 13341da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 13351da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 13361da177e4SLinus Torvalds 13371da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 13381da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 13391da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 13401da177e4SLinus Torvalds 13411da177e4SLinus Torvalds If unsure, say N. 13421da177e4SLinus Torvalds 13431da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 13441da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 13451da177e4SLinus Torvalds depends on XIP_KERNEL 13461da177e4SLinus Torvalds default "0x00080000" 13471da177e4SLinus Torvalds help 13481da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 13491da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 13501da177e4SLinus Torvalds own flash usage. 13511da177e4SLinus Torvalds 1352c587e4a6SRichard Purdieconfig KEXEC 1353c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 1354c587e4a6SRichard Purdie depends on EXPERIMENTAL 1355c587e4a6SRichard Purdie help 1356c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1357c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 135801dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1359c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1360c587e4a6SRichard Purdie 1361c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1362c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1363c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 1364c587e4a6SRichard Purdie support. 1365c587e4a6SRichard Purdie 13664cd9d6f7SRichard Purdieconfig ATAGS_PROC 13674cd9d6f7SRichard Purdie bool "Export atags in procfs" 1368b98d7291SUli Luckas depends on KEXEC 1369b98d7291SUli Luckas default y 13704cd9d6f7SRichard Purdie help 13714cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 13724cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 13734cd9d6f7SRichard Purdie 13741da177e4SLinus Torvaldsendmenu 13751da177e4SLinus Torvalds 1376ac9d7efcSRussell Kingmenu "CPU Power Management" 13771da177e4SLinus Torvalds 137889c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 13791da177e4SLinus Torvalds 13801da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 13811da177e4SLinus Torvalds 13821da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 13831da177e4SLinus Torvalds bool 13841da177e4SLinus Torvalds 13851da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 13861da177e4SLinus Torvalds bool 13871da177e4SLinus Torvalds 13881da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 13891da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 13901da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 13911da177e4SLinus Torvalds default y 13921da177e4SLinus Torvalds help 13931da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 13941da177e4SLinus Torvalds 13951da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 13961da177e4SLinus Torvalds 13971da177e4SLinus Torvalds If in doubt, say Y. 13981da177e4SLinus Torvalds 13999e2697ffSRussell Kingconfig CPU_FREQ_PXA 14009e2697ffSRussell King bool 14019e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 14029e2697ffSRussell King default y 14039e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 14049e2697ffSRussell King 1405b3748dddSMark Brownconfig CPU_FREQ_S3C64XX 1406b3748dddSMark Brown bool "CPUfreq support for Samsung S3C64XX CPUs" 1407b3748dddSMark Brown depends on CPU_FREQ && CPU_S3C6410 1408b3748dddSMark Brown 14099d56c02aSBen Dooksconfig CPU_FREQ_S3C 14109d56c02aSBen Dooks bool 14119d56c02aSBen Dooks help 14129d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 14139d56c02aSBen Dooks 14149d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 14159d56c02aSBen Dooks bool "CPUfreq driver for Samsung S3C24XX series CPUs" 14169d56c02aSBen Dooks depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 14179d56c02aSBen Dooks select CPU_FREQ_S3C 14189d56c02aSBen Dooks help 14199d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 14209d56c02aSBen Dooks of CPUs. 14219d56c02aSBen Dooks 14229d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 14239d56c02aSBen Dooks 14249d56c02aSBen Dooks If in doubt, say N. 14259d56c02aSBen Dooks 14269d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 14279d56c02aSBen Dooks bool "Support CPUfreq changing of PLL frequency" 14289d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 14299d56c02aSBen Dooks help 14309d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 14319d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 14329d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 14339d56c02aSBen Dooks 14349d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 14359d56c02aSBen Dooks be built which may increase the size of the kernel image. 14369d56c02aSBen Dooks 14379d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 14389d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 14399d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14409d56c02aSBen Dooks help 14419d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 14429d56c02aSBen Dooks 14439d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 14449d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 14459d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14469d56c02aSBen Dooks help 14479d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 14489d56c02aSBen Dooks 1449e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 1450e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 1451e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 1452e6d197a6SBen Dooks help 1453e6d197a6SBen Dooks Export status information via debugfs. 1454e6d197a6SBen Dooks 14551da177e4SLinus Torvaldsendif 14561da177e4SLinus Torvalds 1457ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 1458ac9d7efcSRussell King 1459ac9d7efcSRussell Kingendmenu 1460ac9d7efcSRussell King 14611da177e4SLinus Torvaldsmenu "Floating point emulation" 14621da177e4SLinus Torvalds 14631da177e4SLinus Torvaldscomment "At least one emulation must be selected" 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvaldsconfig FPE_NWFPE 14661da177e4SLinus Torvalds bool "NWFPE math emulation" 14678993a44cSNicolas Pitre depends on !AEABI || OABI_COMPAT 14681da177e4SLinus Torvalds ---help--- 14691da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 14701da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 14711da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 14721da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 14731da177e4SLinus Torvalds 14741da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 14751da177e4SLinus Torvalds early in the bootup. 14761da177e4SLinus Torvalds 14771da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 14781da177e4SLinus Torvalds bool "Support extended precision" 1479bedf142bSLennert Buytenhek depends on FPE_NWFPE 14801da177e4SLinus Torvalds help 14811da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 14821da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 14831da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 14841da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 14851da177e4SLinus Torvalds floating point emulator without any good reason. 14861da177e4SLinus Torvalds 14871da177e4SLinus Torvalds You almost surely want to say N here. 14881da177e4SLinus Torvalds 14891da177e4SLinus Torvaldsconfig FPE_FASTFPE 14901da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 14918993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 14921da177e4SLinus Torvalds ---help--- 14931da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 14941da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 14951da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 14961da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 14971da177e4SLinus Torvalds 14981da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 14991da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 15001da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 15011da177e4SLinus Torvalds choose NWFPE. 15021da177e4SLinus Torvalds 15031da177e4SLinus Torvaldsconfig VFP 15041da177e4SLinus Torvalds bool "VFP-format floating point maths" 1505c00d4ffdSRussell King depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 15061da177e4SLinus Torvalds help 15071da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 15081da177e4SLinus Torvalds if your hardware includes a VFP unit. 15091da177e4SLinus Torvalds 15101da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 15111da177e4SLinus Torvalds release notes and additional status information. 15121da177e4SLinus Torvalds 15131da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 15141da177e4SLinus Torvalds 151525ebee02SCatalin Marinasconfig VFPv3 151625ebee02SCatalin Marinas bool 151725ebee02SCatalin Marinas depends on VFP 151825ebee02SCatalin Marinas default y if CPU_V7 151925ebee02SCatalin Marinas 1520b5872db4SCatalin Marinasconfig NEON 1521b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 1522b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 1523b5872db4SCatalin Marinas help 1524b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1525b5872db4SCatalin Marinas Extension. 1526b5872db4SCatalin Marinas 15271da177e4SLinus Torvaldsendmenu 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvaldsmenu "Userspace binary formats" 15301da177e4SLinus Torvalds 15311da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 15321da177e4SLinus Torvalds 15331da177e4SLinus Torvaldsconfig ARTHUR 15341da177e4SLinus Torvalds tristate "RISC OS personality" 1535704bdda0SNicolas Pitre depends on !AEABI 15361da177e4SLinus Torvalds help 15371da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 15381da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 15391da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 15401da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 15411da177e4SLinus Torvalds will be called arthur). 15421da177e4SLinus Torvalds 15431da177e4SLinus Torvaldsendmenu 15441da177e4SLinus Torvalds 15451da177e4SLinus Torvaldsmenu "Power management options" 15461da177e4SLinus Torvalds 1547eceab4acSRussell Kingsource "kernel/power/Kconfig" 15481da177e4SLinus Torvalds 1549f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 1550f4cb5700SJohannes Berg def_bool y 1551f4cb5700SJohannes Berg 15521da177e4SLinus Torvaldsendmenu 15531da177e4SLinus Torvalds 1554d5950b43SSam Ravnborgsource "net/Kconfig" 1555d5950b43SSam Ravnborg 1556ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 15571da177e4SLinus Torvalds 15581da177e4SLinus Torvaldssource "fs/Kconfig" 15591da177e4SLinus Torvalds 15601da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 15611da177e4SLinus Torvalds 15621da177e4SLinus Torvaldssource "security/Kconfig" 15631da177e4SLinus Torvalds 15641da177e4SLinus Torvaldssource "crypto/Kconfig" 15651da177e4SLinus Torvalds 15661da177e4SLinus Torvaldssource "lib/Kconfig" 1567