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 1542d4b839SMathieu Desnoyers select HAVE_OPROFILE 165cbad0ebSJason Wessel select HAVE_ARCH_KGDB 173f550096SMathieu Desnoyers select HAVE_KPROBES if (!XIP_KERNEL) 189edddaa2SAnanth N Mavinakayanahalli select HAVE_KRETPROBES if (HAVE_KPROBES) 19606576ceSSteven Rostedt select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 201fe53268SDmitry Baryshkov select HAVE_GENERIC_DMA_COHERENT 21e7db7b42SAlbin Tonnerre select HAVE_KERNEL_GZIP 22e7db7b42SAlbin Tonnerre select HAVE_KERNEL_LZO 231da177e4SLinus Torvalds help 241da177e4SLinus Torvalds The ARM series is a line of low-power-consumption RISC chip designs 25f6c8965aSMartin Michlmayr licensed by ARM Ltd and targeted at embedded applications and 261da177e4SLinus Torvalds handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 271da177e4SLinus Torvalds manufactured, but legacy ARM-based PC hardware remains popular in 281da177e4SLinus Torvalds Europe. There is an ARM Linux project with a web page at 291da177e4SLinus Torvalds <http://www.arm.linux.org.uk/>. 301da177e4SLinus Torvalds 311a189b97SRussell Kingconfig HAVE_PWM 321a189b97SRussell King bool 331a189b97SRussell King 3475e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION 3575e7153aSRalf Baechle bool 3675e7153aSRalf Baechle 370a938b97SDavid Brownellconfig GENERIC_GPIO 380a938b97SDavid Brownell bool 390a938b97SDavid Brownell 40746140c7SKevin Hilmanconfig GENERIC_TIME 41746140c7SKevin Hilman bool 42746140c7SKevin Hilman 430567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS 440567a0c0SKevin Hilman bool 450567a0c0SKevin Hilman 46a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST 47a8655e83SCatalin Marinas bool 48a8655e83SCatalin Marinas depends on GENERIC_CLOCKEVENTS 49a8655e83SCatalin Marinas default y if SMP && !LOCAL_TIMERS 50a8655e83SCatalin Marinas 51bc581770SLinus Walleijconfig HAVE_TCM 52bc581770SLinus Walleij bool 53bc581770SLinus Walleij select GENERIC_ALLOCATOR 54bc581770SLinus Walleij 555ea81769SAl Viroconfig NO_IOPORT 565ea81769SAl Viro bool 575ea81769SAl Viro 581da177e4SLinus Torvaldsconfig EISA 591da177e4SLinus Torvalds bool 601da177e4SLinus Torvalds ---help--- 611da177e4SLinus Torvalds The Extended Industry Standard Architecture (EISA) bus was 621da177e4SLinus Torvalds developed as an open alternative to the IBM MicroChannel bus. 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds The EISA bus provided some of the features of the IBM MicroChannel 651da177e4SLinus Torvalds bus while maintaining backward compatibility with cards made for 661da177e4SLinus Torvalds the older ISA bus. The EISA bus saw limited use between 1988 and 671da177e4SLinus Torvalds 1995 when it was made obsolete by the PCI bus. 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds Say Y here if you are building a kernel for an EISA-based machine. 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds Otherwise, say N. 721da177e4SLinus Torvalds 731da177e4SLinus Torvaldsconfig SBUS 741da177e4SLinus Torvalds bool 751da177e4SLinus Torvalds 761da177e4SLinus Torvaldsconfig MCA 771da177e4SLinus Torvalds bool 781da177e4SLinus Torvalds help 791da177e4SLinus Torvalds MicroChannel Architecture is found in some IBM PS/2 machines and 801da177e4SLinus Torvalds laptops. It is a bus system similar to PCI or ISA. See 811da177e4SLinus Torvalds <file:Documentation/mca.txt> (and especially the web page given 821da177e4SLinus Torvalds there) before attempting to build an MCA bus kernel. 831da177e4SLinus Torvalds 844a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS 854a2581a0SThomas Gleixner bool 864a2581a0SThomas Gleixner default y 874a2581a0SThomas Gleixner 88f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT 89f16fb1ecSRussell King bool 90f16fb1ecSRussell King default y 91f16fb1ecSRussell King 92f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT 93f76e9154SNicolas Pitre bool 94f76e9154SNicolas Pitre depends on !SMP 95f76e9154SNicolas Pitre default y 96f76e9154SNicolas Pitre 97f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT 98f16fb1ecSRussell King bool 99f16fb1ecSRussell King default y 100f16fb1ecSRussell King 1017ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT 1027ad1bcb2SRussell King bool 1037ad1bcb2SRussell King default y 1047ad1bcb2SRussell King 1054a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND 1064a2581a0SThomas Gleixner bool 1074a2581a0SThomas Gleixner default y 1084a2581a0SThomas Gleixner 1094a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE 1104a2581a0SThomas Gleixner bool 1114a2581a0SThomas Gleixner default y 1124a2581a0SThomas Gleixner 11395c354feSNick Pigginconfig GENERIC_LOCKBREAK 11495c354feSNick Piggin bool 11595c354feSNick Piggin default y 11695c354feSNick Piggin depends on SMP && PREEMPT 11795c354feSNick Piggin 1181da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK 1191da177e4SLinus Torvalds bool 1201da177e4SLinus Torvalds default y 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM 1231da177e4SLinus Torvalds bool 1241da177e4SLinus Torvalds 125f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 126f0d1b0b3SDavid Howells bool 127f0d1b0b3SDavid Howells 128f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 129f0d1b0b3SDavid Howells bool 130f0d1b0b3SDavid Howells 13189c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ 13289c52ed4SBen Dooks bool 13389c52ed4SBen Dooks help 13489c52ed4SBen Dooks Internal node to signify that the ARCH has CPUFREQ support 13589c52ed4SBen Dooks and that the relevant menu configurations are displayed for 13689c52ed4SBen Dooks it. 13789c52ed4SBen Dooks 138b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT 139b89c3b16SAkinobu Mita bool 140b89c3b16SAkinobu Mita default y 141b89c3b16SAkinobu Mita 1421da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY 1431da177e4SLinus Torvalds bool 1441da177e4SLinus Torvalds default y 1451da177e4SLinus Torvalds 146a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC 147a08b6b79Sviro@ZenIV.linux.org.uk bool 148a08b6b79Sviro@ZenIV.linux.org.uk 1495ac6da66SChristoph Lameterconfig ZONE_DMA 1505ac6da66SChristoph Lameter bool 1515ac6da66SChristoph Lameter 1521da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA 1531da177e4SLinus Torvalds bool 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvaldsconfig FIQ 1561da177e4SLinus Torvalds bool 1571da177e4SLinus Torvalds 158034d2f5aSAl Viroconfig ARCH_MTD_XIP 159034d2f5aSAl Viro bool 160034d2f5aSAl Viro 16160a752efSPaulius Zaleckasconfig GENERIC_HARDIRQS_NO__DO_IRQ 16260a752efSPaulius Zaleckas def_bool y 16360a752efSPaulius Zaleckas 164c0ffa3a9SMathieu Desnoyersif OPROFILE 165c0ffa3a9SMathieu Desnoyers 166c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARMV6 167c0ffa3a9SMathieu Desnoyers def_bool y 168c0ffa3a9SMathieu Desnoyers depends on CPU_V6 && !SMP 169c0ffa3a9SMathieu Desnoyers select OPROFILE_ARM11_CORE 170c0ffa3a9SMathieu Desnoyers 171c0ffa3a9SMathieu Desnoyersconfig OPROFILE_MPCORE 172c0ffa3a9SMathieu Desnoyers def_bool y 173c0ffa3a9SMathieu Desnoyers depends on CPU_V6 && SMP 174c0ffa3a9SMathieu Desnoyers select OPROFILE_ARM11_CORE 175c0ffa3a9SMathieu Desnoyers 176c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARM11_CORE 177c0ffa3a9SMathieu Desnoyers bool 178c0ffa3a9SMathieu Desnoyers 179d7ac4e28SJean PIHETconfig OPROFILE_ARMV7 180d7ac4e28SJean PIHET def_bool y 181d7ac4e28SJean PIHET depends on CPU_V7 && !SMP 182d7ac4e28SJean PIHET bool 183d7ac4e28SJean PIHET 184c0ffa3a9SMathieu Desnoyersendif 185c0ffa3a9SMathieu Desnoyers 186c760fc19SHyok S. Choiconfig VECTORS_BASE 187c760fc19SHyok S. Choi hex 1886afd6faeSHyok S. Choi default 0xffff0000 if MMU || CPU_HIGH_VECTOR 189c760fc19SHyok S. Choi default DRAM_BASE if REMAP_VECTORS_TO_RAM 190c760fc19SHyok S. Choi default 0x00000000 191c760fc19SHyok S. Choi help 192c760fc19SHyok S. Choi The base address of exception vectors. 193c760fc19SHyok S. Choi 1941da177e4SLinus Torvaldssource "init/Kconfig" 1951da177e4SLinus Torvalds 196dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 197dc52ddc0SMatt Helsley 1981da177e4SLinus Torvaldsmenu "System Type" 1991da177e4SLinus Torvalds 2003c427975SHyok S. Choiconfig MMU 2013c427975SHyok S. Choi bool "MMU-based Paged Memory Management Support" 2023c427975SHyok S. Choi default y 2033c427975SHyok S. Choi help 2043c427975SHyok S. Choi Select if you want MMU-based virtualised addressing space 2053c427975SHyok S. Choi support by paged memory management. If unsure, say 'Y'. 2063c427975SHyok S. Choi 2071da177e4SLinus Torvaldschoice 2081da177e4SLinus Torvalds prompt "ARM system type" 2096a0e2430SCatalin Marinas default ARCH_VERSATILE 2101da177e4SLinus Torvalds 2114af6fee1SDeepak Saxenaconfig ARCH_AAEC2000 2124af6fee1SDeepak Saxena bool "Agilent AAEC-2000 based" 213c750815eSRussell King select CPU_ARM920T 2144af6fee1SDeepak Saxena select ARM_AMBA 2159483a578SDavid Brownell select HAVE_CLK 2164af6fee1SDeepak Saxena help 2174af6fee1SDeepak Saxena This enables support for systems based on the Agilent AAEC-2000 2184af6fee1SDeepak Saxena 2194af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR 2204af6fee1SDeepak Saxena bool "ARM Ltd. Integrator family" 2214af6fee1SDeepak Saxena select ARM_AMBA 22289c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 2239483a578SDavid Brownell select HAVE_CLK 224d72fbdf0SRussell King select COMMON_CLKDEV 2254af6fee1SDeepak Saxena select ICST525 2264af6fee1SDeepak Saxena help 2274af6fee1SDeepak Saxena Support for ARM's Integrator platform. 2284af6fee1SDeepak Saxena 2294af6fee1SDeepak Saxenaconfig ARCH_REALVIEW 2304af6fee1SDeepak Saxena bool "ARM Ltd. RealView family" 2314af6fee1SDeepak Saxena select ARM_AMBA 2329483a578SDavid Brownell select HAVE_CLK 233cf30fb4aSRussell King select COMMON_CLKDEV 2344af6fee1SDeepak Saxena select ICST307 23585802afeSCatalin Marinas select GENERIC_TIME 236ae30ceacSCatalin Marinas select GENERIC_CLOCKEVENTS 237eb7fffa3SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 2384af6fee1SDeepak Saxena help 2394af6fee1SDeepak Saxena This enables support for ARM Ltd RealView boards. 2404af6fee1SDeepak Saxena 2414af6fee1SDeepak Saxenaconfig ARCH_VERSATILE 2424af6fee1SDeepak Saxena bool "ARM Ltd. Versatile family" 2434af6fee1SDeepak Saxena select ARM_AMBA 2444af6fee1SDeepak Saxena select ARM_VIC 2459483a578SDavid Brownell select HAVE_CLK 24671a06da0SRussell King select COMMON_CLKDEV 2474af6fee1SDeepak Saxena select ICST307 248b49c87c2SKevin Hilman select GENERIC_TIME 24989df1272SKevin Hilman select GENERIC_CLOCKEVENTS 250bbeddc43SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 2514af6fee1SDeepak Saxena help 2524af6fee1SDeepak Saxena This enables support for ARM Ltd Versatile board. 2534af6fee1SDeepak Saxena 2548fc5ffa0SAndrew Victorconfig ARCH_AT91 2558fc5ffa0SAndrew Victor bool "Atmel AT91" 2560a938b97SDavid Brownell select GENERIC_GPIO 257f373e8c0SRyan Mallon select ARCH_REQUIRE_GPIOLIB 25893686ae8SDavid Brownell select HAVE_CLK 2594af6fee1SDeepak Saxena help 2602b3b3516SAndrew Victor This enables support for systems based on the Atmel AT91RM9200, 2612b3b3516SAndrew Victor AT91SAM9 and AT91CAP9 processors. 2624af6fee1SDeepak Saxena 2631da177e4SLinus Torvaldsconfig ARCH_CLPS711X 2644af6fee1SDeepak Saxena bool "Cirrus Logic CLPS711x/EP721x-based" 265c750815eSRussell King select CPU_ARM720T 266f999b8bdSMartin Michlmayr help 267f999b8bdSMartin Michlmayr Support for Cirrus Logic 711x/721x based boards. 2681da177e4SLinus Torvalds 269788c9700SRussell Kingconfig ARCH_GEMINI 270788c9700SRussell King bool "Cortina Systems Gemini" 271788c9700SRussell King select CPU_FA526 272788c9700SRussell King select GENERIC_GPIO 273788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 274788c9700SRussell King help 275788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 276788c9700SRussell King 2771da177e4SLinus Torvaldsconfig ARCH_EBSA110 2781da177e4SLinus Torvalds bool "EBSA-110" 279c750815eSRussell King select CPU_SA110 280f7e68bbfSRussell King select ISA 281c5eb2a2bSRussell King select NO_IOPORT 2821da177e4SLinus Torvalds help 2831da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 284f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 2851da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 2861da177e4SLinus Torvalds parallel port. 2871da177e4SLinus Torvalds 288e7736d47SLennert Buytenhekconfig ARCH_EP93XX 289e7736d47SLennert Buytenhek bool "EP93xx-based" 290c750815eSRussell King select CPU_ARM920T 291e7736d47SLennert Buytenhek select ARM_AMBA 292e7736d47SLennert Buytenhek select ARM_VIC 2934e9f9fd5SHerbert Valerio Riedel select GENERIC_GPIO 2949483a578SDavid Brownell select HAVE_CLK 295ae696fd5SRussell King select COMMON_CLKDEV 2967444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 297eb33575cSMel Gorman select ARCH_HAS_HOLES_MEMORYMODEL 298e7736d47SLennert Buytenhek help 299e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 300e7736d47SLennert Buytenhek 3011da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 3021da177e4SLinus Torvalds bool "FootBridge" 303c750815eSRussell King select CPU_SA110 3041da177e4SLinus Torvalds select FOOTBRIDGE 305f999b8bdSMartin Michlmayr help 306f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 307f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 3081da177e4SLinus Torvalds 309788c9700SRussell Kingconfig ARCH_MXC 310788c9700SRussell King bool "Freescale MXC/iMX-based" 311788c9700SRussell King select GENERIC_TIME 312788c9700SRussell King select GENERIC_CLOCKEVENTS 313788c9700SRussell King select ARCH_MTD_XIP 314788c9700SRussell King select GENERIC_GPIO 315788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 316a2ab67faSRussell King select HAVE_CLK 317788c9700SRussell King help 318788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 319788c9700SRussell King 3207bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX 3217bd0f2f5Sdmitry pervushin bool "Freescale STMP3xxx" 3227bd0f2f5Sdmitry pervushin select CPU_ARM926T 3237bd0f2f5Sdmitry pervushin select HAVE_CLK 3247bd0f2f5Sdmitry pervushin select COMMON_CLKDEV 3257bd0f2f5Sdmitry pervushin select ARCH_REQUIRE_GPIOLIB 3267bd0f2f5Sdmitry pervushin select GENERIC_TIME 3277bd0f2f5Sdmitry pervushin select GENERIC_CLOCKEVENTS 3287bd0f2f5Sdmitry pervushin select GENERIC_GPIO 3297bd0f2f5Sdmitry pervushin select USB_ARCH_HAS_EHCI 3307bd0f2f5Sdmitry pervushin help 3317bd0f2f5Sdmitry pervushin Support for systems based on the Freescale 3xxx CPUs. 3327bd0f2f5Sdmitry pervushin 3334af6fee1SDeepak Saxenaconfig ARCH_NETX 3344af6fee1SDeepak Saxena bool "Hilscher NetX based" 335c750815eSRussell King select CPU_ARM926T 3364af6fee1SDeepak Saxena select ARM_VIC 3372fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 33821edecd3SUwe Kleine-König select GENERIC_TIME 339f999b8bdSMartin Michlmayr help 3404af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 3414af6fee1SDeepak Saxena 3424af6fee1SDeepak Saxenaconfig ARCH_H720X 3434af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 344c750815eSRussell King select CPU_ARM720T 3454af6fee1SDeepak Saxena select ISA_DMA_API 3464af6fee1SDeepak Saxena help 3474af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 3484af6fee1SDeepak Saxena 34928ad94ecSAlessandro Rubiniconfig ARCH_NOMADIK 35028ad94ecSAlessandro Rubini bool "STMicroelectronics Nomadik" 35128ad94ecSAlessandro Rubini select ARM_AMBA 35228ad94ecSAlessandro Rubini select ARM_VIC 35328ad94ecSAlessandro Rubini select CPU_ARM926T 35428ad94ecSAlessandro Rubini select HAVE_CLK 35528ad94ecSAlessandro Rubini select COMMON_CLKDEV 35628ad94ecSAlessandro Rubini select GENERIC_TIME 35728ad94ecSAlessandro Rubini select GENERIC_CLOCKEVENTS 3582ec1d359SAlessandro Rubini select GENERIC_GPIO 3592ec1d359SAlessandro Rubini select ARCH_REQUIRE_GPIOLIB 36028ad94ecSAlessandro Rubini help 36128ad94ecSAlessandro Rubini Support for the Nomadik platform by ST-Ericsson 36228ad94ecSAlessandro Rubini 3633b938be6SRussell Kingconfig ARCH_IOP13XX 3643b938be6SRussell King bool "IOP13xx-based" 3653b938be6SRussell King depends on MMU 366c750815eSRussell King select CPU_XSC3 3673b938be6SRussell King select PLAT_IOP 3683b938be6SRussell King select PCI 3693b938be6SRussell King select ARCH_SUPPORTS_MSI 3708d5796d2SLennert Buytenhek select VMSPLIT_1G 3713b938be6SRussell King help 3723b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 3733b938be6SRussell King 3743f7e5815SLennert Buytenhekconfig ARCH_IOP32X 3753f7e5815SLennert Buytenhek bool "IOP32x-based" 376a4f7e763SRussell King depends on MMU 377c750815eSRussell King select CPU_XSCALE 3787ae1f7ecSLennert Buytenhek select PLAT_IOP 379f7e68bbfSRussell King select PCI 38063f385cdSArnaud Patard select GENERIC_GPIO 381bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 382f999b8bdSMartin Michlmayr help 3833f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 3843f7e5815SLennert Buytenhek processors. 3853f7e5815SLennert Buytenhek 3863f7e5815SLennert Buytenhekconfig ARCH_IOP33X 3873f7e5815SLennert Buytenhek bool "IOP33x-based" 3883f7e5815SLennert Buytenhek depends on MMU 389c750815eSRussell King select CPU_XSCALE 3907ae1f7ecSLennert Buytenhek select PLAT_IOP 3913f7e5815SLennert Buytenhek select PCI 39263f385cdSArnaud Patard select GENERIC_GPIO 393bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 3943f7e5815SLennert Buytenhek help 3953f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 3961da177e4SLinus Torvalds 3973b938be6SRussell Kingconfig ARCH_IXP23XX 3983b938be6SRussell King bool "IXP23XX-based" 399588ef769SDan Williams depends on MMU 400c750815eSRussell King select CPU_XSC3 401285f5fa7SDan Williams select PCI 402285f5fa7SDan Williams help 4033b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvaldsconfig ARCH_IXP2000 4061da177e4SLinus Torvalds bool "IXP2400/2800-based" 407a4f7e763SRussell King depends on MMU 408c750815eSRussell King select CPU_XSCALE 409f7e68bbfSRussell King select PCI 410f999b8bdSMartin Michlmayr help 411f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 4121da177e4SLinus Torvalds 4133b938be6SRussell Kingconfig ARCH_IXP4XX 4143b938be6SRussell King bool "IXP4xx-based" 415a4f7e763SRussell King depends on MMU 416c750815eSRussell King select CPU_XSCALE 4178858e9afSMilan Svoboda select GENERIC_GPIO 4183b938be6SRussell King select GENERIC_TIME 4193b938be6SRussell King select GENERIC_CLOCKEVENTS 420485bdde7SRussell King select DMABOUNCE if PCI 421c4713074SLennert Buytenhek help 4223b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 423c4713074SLennert Buytenhek 4241da177e4SLinus Torvaldsconfig ARCH_L7200 4251da177e4SLinus Torvalds bool "LinkUp-L7200" 426c750815eSRussell King select CPU_ARM720T 4271da177e4SLinus Torvalds select FIQ 4281da177e4SLinus Torvalds help 4291da177e4SLinus Torvalds Say Y here if you intend to run this kernel on a LinkUp Systems 4301da177e4SLinus Torvalds L7200 Software Development Board which uses an ARM720T processor. 4311da177e4SLinus Torvalds Information on this board can be obtained at: 4321da177e4SLinus Torvalds 4331da177e4SLinus Torvalds <http://www.linkupsys.com/> 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds If you have any questions or comments about the Linux kernel port 4361da177e4SLinus Torvalds to this board, send e-mail to <sjhill@cotw.com>. 4371da177e4SLinus Torvalds 438edabd38eSSaeed Bisharaconfig ARCH_DOVE 439edabd38eSSaeed Bishara bool "Marvell Dove" 440edabd38eSSaeed Bishara select PCI 441edabd38eSSaeed Bishara select GENERIC_GPIO 442edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 443edabd38eSSaeed Bishara select GENERIC_TIME 444edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 445edabd38eSSaeed Bishara select PLAT_ORION 446edabd38eSSaeed Bishara help 447edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 448edabd38eSSaeed Bishara 449651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 450651c74c7SSaeed Bishara bool "Marvell Kirkwood" 451c750815eSRussell King select CPU_FEROCEON 452651c74c7SSaeed Bishara select PCI 4534c213430SLennert Buytenhek select GENERIC_GPIO 454a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 455651c74c7SSaeed Bishara select GENERIC_TIME 456651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 457651c74c7SSaeed Bishara select PLAT_ORION 458651c74c7SSaeed Bishara help 459651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 460651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 461651c74c7SSaeed Bishara 462788c9700SRussell Kingconfig ARCH_LOKI 463788c9700SRussell King bool "Marvell Loki (88RC8480)" 464788c9700SRussell King select CPU_FEROCEON 465788c9700SRussell King select GENERIC_TIME 466788c9700SRussell King select GENERIC_CLOCKEVENTS 467788c9700SRussell King select PLAT_ORION 468788c9700SRussell King help 469788c9700SRussell King Support for the Marvell Loki (88RC8480) SoC. 470788c9700SRussell King 471788c9700SRussell Kingconfig ARCH_MV78XX0 472788c9700SRussell King bool "Marvell MV78xx0" 473788c9700SRussell King select CPU_FEROCEON 474788c9700SRussell King select PCI 475788c9700SRussell King select GENERIC_GPIO 476a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 477788c9700SRussell King select GENERIC_TIME 478788c9700SRussell King select GENERIC_CLOCKEVENTS 479788c9700SRussell King select PLAT_ORION 480788c9700SRussell King help 481788c9700SRussell King Support for the following Marvell MV78xx0 series SoCs: 482788c9700SRussell King MV781x0, MV782x0. 483788c9700SRussell King 484788c9700SRussell Kingconfig ARCH_ORION5X 485788c9700SRussell King bool "Marvell Orion" 486788c9700SRussell King depends on MMU 487788c9700SRussell King select CPU_FEROCEON 488788c9700SRussell King select PCI 489788c9700SRussell King select GENERIC_GPIO 490a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 491788c9700SRussell King select GENERIC_TIME 492788c9700SRussell King select GENERIC_CLOCKEVENTS 493788c9700SRussell King select PLAT_ORION 494788c9700SRussell King help 495788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 496788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 497788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 498788c9700SRussell King 499788c9700SRussell Kingconfig ARCH_MMP 500788c9700SRussell King bool "Marvell PXA168/910" 501788c9700SRussell King depends on MMU 502788c9700SRussell King select GENERIC_GPIO 503788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 504788c9700SRussell King select HAVE_CLK 505788c9700SRussell King select COMMON_CLKDEV 506788c9700SRussell King select GENERIC_TIME 507788c9700SRussell King select GENERIC_CLOCKEVENTS 508788c9700SRussell King select TICK_ONESHOT 509788c9700SRussell King select PLAT_PXA 510788c9700SRussell King help 511788c9700SRussell King Support for Marvell's PXA168/910 processor line. 512788c9700SRussell King 513c53c9cf6SAndrew Victorconfig ARCH_KS8695 514c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 515c750815eSRussell King select CPU_ARM922T 5168a87a996SAndrew Victor select GENERIC_GPIO 51772880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 518c53c9cf6SAndrew Victor help 519c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 520c53c9cf6SAndrew Victor System-on-Chip devices. 521c53c9cf6SAndrew Victor 5229918cda5SUwe Kleine-Königconfig ARCH_NS9XXX 5239918cda5SUwe Kleine-König bool "NetSilicon NS9xxx" 524c750815eSRussell King select CPU_ARM926T 525689f2a01SUwe Kleine-König select GENERIC_GPIO 526cef5975dSUwe Kleine-König select GENERIC_TIME 527c0bb87f7SUwe Kleine-König select GENERIC_CLOCKEVENTS 5289483a578SDavid Brownell select HAVE_CLK 5299918cda5SUwe Kleine-König help 5309918cda5SUwe Kleine-König Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 5319918cda5SUwe Kleine-König System. 5329918cda5SUwe Kleine-König 5339918cda5SUwe Kleine-König <http://www.digi.com/products/microprocessors/index.jsp> 5349918cda5SUwe Kleine-König 535788c9700SRussell Kingconfig ARCH_W90X900 536788c9700SRussell King bool "Nuvoton W90X900 CPU" 537788c9700SRussell King select CPU_ARM926T 538c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 539c52d3d68Swanzongshun select GENERIC_GPIO 540d2c24195Swanzongshun select HAVE_CLK 5410e4a34bbSwanzongshun select COMMON_CLKDEV 54258b5369eSwanzongshun select GENERIC_TIME 54358b5369eSwanzongshun select GENERIC_CLOCKEVENTS 544777f9bebSLennert Buytenhek help 545a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 546a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 547a8bc4eadSwanzongshun the ARM series product line, you can login the following 548a8bc4eadSwanzongshun link address to know more. 549a8bc4eadSwanzongshun 550a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 551a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 552585cf175STzachi Perelstein 5534af6fee1SDeepak Saxenaconfig ARCH_PNX4008 5544af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 555c750815eSRussell King select CPU_ARM926T 5569483a578SDavid Brownell select HAVE_CLK 5574af6fee1SDeepak Saxena help 5584af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 5594af6fee1SDeepak Saxena 5601da177e4SLinus Torvaldsconfig ARCH_PXA 5612c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 562a4f7e763SRussell King depends on MMU 563034d2f5aSAl Viro select ARCH_MTD_XIP 56489c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 5650a938b97SDavid Brownell select GENERIC_GPIO 5669483a578SDavid Brownell select HAVE_CLK 5678c3abc7dSRussell King select COMMON_CLKDEV 5687444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 56945cf5eefSNicolas Pitre select GENERIC_TIME 570981d0f39SEric Miao select GENERIC_CLOCKEVENTS 571a88264c2SRussell King select TICK_ONESHOT 572bd5ce433SEric Miao select PLAT_PXA 573f999b8bdSMartin Michlmayr help 5742c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 5751da177e4SLinus Torvalds 576788c9700SRussell Kingconfig ARCH_MSM 577788c9700SRussell King bool "Qualcomm MSM" 578788c9700SRussell King select CPU_V6 57949cbe786SEric Miao select GENERIC_TIME 58049cbe786SEric Miao select GENERIC_CLOCKEVENTS 58149cbe786SEric Miao help 582788c9700SRussell King Support for Qualcomm MSM7K based systems. This runs on the ARM11 583788c9700SRussell King apps processor of the MSM7K and depends on a shared memory 584788c9700SRussell King interface to the ARM9 modem processor which runs the baseband stack 585788c9700SRussell King and controls some vital subsystems (clock and power control, etc). 58649cbe786SEric Miao 5871da177e4SLinus Torvaldsconfig ARCH_RPC 5881da177e4SLinus Torvalds bool "RiscPC" 5891da177e4SLinus Torvalds select ARCH_ACORN 5901da177e4SLinus Torvalds select FIQ 5911da177e4SLinus Torvalds select TIMER_ACORN 592a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 593341eb781SBen Dooks select HAVE_PATA_PLATFORM 594065909b9SRussell King select ISA_DMA_API 5955ea81769SAl Viro select NO_IOPORT 59607f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 5971da177e4SLinus Torvalds help 5981da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 5991da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvaldsconfig ARCH_SA1100 6021da177e4SLinus Torvalds bool "SA1100-based" 603c750815eSRussell King select CPU_SA1100 604f7e68bbfSRussell King select ISA 60505944d74SRussell King select ARCH_SPARSEMEM_ENABLE 606034d2f5aSAl Viro select ARCH_MTD_XIP 60789c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6081937f5b9SRussell King select CPU_FREQ 6090a938b97SDavid Brownell select GENERIC_GPIO 610d142b6e7SRussell King select GENERIC_TIME 6113e238be2SRussell King select GENERIC_CLOCKEVENTS 6129483a578SDavid Brownell select HAVE_CLK 6133e238be2SRussell King select TICK_ONESHOT 6147444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 615f999b8bdSMartin Michlmayr help 616f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvaldsconfig ARCH_S3C2410 619e4d06e39SBen Dooks bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" 6200a938b97SDavid Brownell select GENERIC_GPIO 6219d56c02aSBen Dooks select ARCH_HAS_CPUFREQ 6229483a578SDavid Brownell select HAVE_CLK 6231da177e4SLinus Torvalds help 6241da177e4SLinus Torvalds Samsung S3C2410X CPU based systems, such as the Simtec Electronics 6251da177e4SLinus Torvalds BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 626f6c8965aSMartin Michlmayr the Samsung SMDK2410 development board (and derivatives). 6271da177e4SLinus Torvalds 628a08ab637SBen Dooksconfig ARCH_S3C64XX 629a08ab637SBen Dooks bool "Samsung S3C64XX" 63089f1fa08SBen Dooks select PLAT_SAMSUNG 63189f0ce72SBen Dooks select CPU_V6 632a08ab637SBen Dooks select GENERIC_GPIO 63389f0ce72SBen Dooks select ARM_VIC 634a08ab637SBen Dooks select HAVE_CLK 63589f0ce72SBen Dooks select NO_IOPORT 63689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 63789f0ce72SBen Dooks select ARCH_REQUIRE_GPIOLIB 63889f0ce72SBen Dooks select SAMSUNG_CLKSRC 63989f0ce72SBen Dooks select SAMSUNG_IRQ_VIC_TIMER 64089f0ce72SBen Dooks select SAMSUNG_IRQ_UART 64189f0ce72SBen Dooks select S3C_GPIO_TRACK 64289f0ce72SBen Dooks select S3C_GPIO_PULL_UPDOWN 64389f0ce72SBen Dooks select S3C_GPIO_CFG_S3C24XX 64489f0ce72SBen Dooks select S3C_GPIO_CFG_S3C64XX 64589f0ce72SBen Dooks select S3C_DEV_NAND 64689f0ce72SBen Dooks select USB_ARCH_HAS_OHCI 64789f0ce72SBen Dooks select SAMSUNG_GPIOLIB_4BIT 648a08ab637SBen Dooks help 649a08ab637SBen Dooks Samsung S3C64XX series based systems 650a08ab637SBen Dooks 651c4ffccddSKukjin Kimconfig ARCH_S5P6440 652c4ffccddSKukjin Kim bool "Samsung S5P6440" 653c4ffccddSKukjin Kim select CPU_V6 654c4ffccddSKukjin Kim select GENERIC_GPIO 655c4ffccddSKukjin Kim select HAVE_CLK 656c4ffccddSKukjin Kim help 657c4ffccddSKukjin Kim Samsung S5P6440 CPU based systems 658c4ffccddSKukjin Kim 659550db7f1SKukjin Kimconfig ARCH_S5P6442 660550db7f1SKukjin Kim bool "Samsung S5P6442" 661550db7f1SKukjin Kim select CPU_V6 662550db7f1SKukjin Kim select GENERIC_GPIO 663550db7f1SKukjin Kim select HAVE_CLK 664550db7f1SKukjin Kim help 665550db7f1SKukjin Kim Samsung S5P6442 CPU based systems 666550db7f1SKukjin Kim 6675a7652f2SByungho Minconfig ARCH_S5PC1XX 6685a7652f2SByungho Min bool "Samsung S5PC1XX" 6695a7652f2SByungho Min select GENERIC_GPIO 6705a7652f2SByungho Min select HAVE_CLK 6715a7652f2SByungho Min select CPU_V7 6725a7652f2SByungho Min help 6735a7652f2SByungho Min Samsung S5PC1XX series based systems 6745a7652f2SByungho Min 675*170f4e42SKukjin Kimconfig ARCH_S5PV210 676*170f4e42SKukjin Kim bool "Samsung S5PV210/S5PC110" 677*170f4e42SKukjin Kim select CPU_V7 678*170f4e42SKukjin Kim select GENERIC_GPIO 679*170f4e42SKukjin Kim select HAVE_CLK 680*170f4e42SKukjin Kim select ARM_L1_CACHE_SHIFT_6 681*170f4e42SKukjin Kim help 682*170f4e42SKukjin Kim Samsung S5PV210/S5PC110 series based systems 683*170f4e42SKukjin Kim 6841da177e4SLinus Torvaldsconfig ARCH_SHARK 6851da177e4SLinus Torvalds bool "Shark" 686c750815eSRussell King select CPU_SA110 687f7e68bbfSRussell King select ISA 688f7e68bbfSRussell King select ISA_DMA 6893bca103aSNicolas Pitre select ZONE_DMA 690f7e68bbfSRussell King select PCI 691f999b8bdSMartin Michlmayr help 692f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 693f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvaldsconfig ARCH_LH7A40X 6961da177e4SLinus Torvalds bool "Sharp LH7A40X" 697c750815eSRussell King select CPU_ARM922T 6984ba3f7c5SRussell King select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM 6994ba3f7c5SRussell King select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 7001da177e4SLinus Torvalds help 7011da177e4SLinus Torvalds Say Y here for systems based on one of the Sharp LH7A40X 7021da177e4SLinus Torvalds System on a Chip processors. These CPUs include an ARM922T 7031da177e4SLinus Torvalds core with a wide array of integrated devices for 7041da177e4SLinus Torvalds hand-held and low-power applications. 7051da177e4SLinus Torvalds 706d98aac75SLinus Walleijconfig ARCH_U300 707d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 708d98aac75SLinus Walleij depends on MMU 709d98aac75SLinus Walleij select CPU_ARM926T 710bc581770SLinus Walleij select HAVE_TCM 711d98aac75SLinus Walleij select ARM_AMBA 712d98aac75SLinus Walleij select ARM_VIC 713d98aac75SLinus Walleij select GENERIC_TIME 714d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 715d98aac75SLinus Walleij select HAVE_CLK 716d98aac75SLinus Walleij select COMMON_CLKDEV 717d98aac75SLinus Walleij select GENERIC_GPIO 718d98aac75SLinus Walleij help 719d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 720d98aac75SLinus Walleij 7217c6337e2SKevin Hilmanconfig ARCH_DAVINCI 7227c6337e2SKevin Hilman bool "TI DaVinci" 723c750815eSRussell King select CPU_ARM926T 7247c6337e2SKevin Hilman select GENERIC_TIME 7257c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 7263d9edf09SVladimir Barinov select GENERIC_GPIO 727dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 7289483a578SDavid Brownell select HAVE_CLK 7293bca103aSNicolas Pitre select ZONE_DMA 7309232fcc9SKevin Hilman select HAVE_IDE 731c5b736d0SKevin Hilman select COMMON_CLKDEV 73220e9969bSDavid Brownell select GENERIC_ALLOCATOR 733ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 7347c6337e2SKevin Hilman help 7357c6337e2SKevin Hilman Support for TI's DaVinci platform. 7367c6337e2SKevin Hilman 7373b938be6SRussell Kingconfig ARCH_OMAP 7383b938be6SRussell King bool "TI OMAP" 7393b938be6SRussell King select GENERIC_GPIO 7409483a578SDavid Brownell select HAVE_CLK 7417444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 74289c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 7433b938be6SRussell King select GENERIC_TIME 74406cad098SKevin Hilman select GENERIC_CLOCKEVENTS 7453b938be6SRussell King help 7463b938be6SRussell King Support for TI's OMAP platform (OMAP1 and OMAP2). 7473b938be6SRussell King 7486288e28dSLeo Chenconfig ARCH_BCMRING 7496288e28dSLeo Chen bool "Broadcom BCMRING" 7506288e28dSLeo Chen depends on MMU 7516288e28dSLeo Chen select CPU_V6 7526288e28dSLeo Chen select ARM_AMBA 7536288e28dSLeo Chen select COMMON_CLKDEV 7546288e28dSLeo Chen select GENERIC_TIME 7556288e28dSLeo Chen select GENERIC_CLOCKEVENTS 7566288e28dSLeo Chen select ARCH_WANT_OPTIONAL_GPIOLIB 7576288e28dSLeo Chen help 7586288e28dSLeo Chen Support for Broadcom's BCMRing platform. 7596288e28dSLeo Chen 760850265e8SSrinidhi Kasagarconfig ARCH_U8500 761850265e8SSrinidhi Kasagar bool "ST-Ericsson U8500 Series" 762850265e8SSrinidhi Kasagar select CPU_V7 763850265e8SSrinidhi Kasagar select ARM_AMBA 764850265e8SSrinidhi Kasagar select GENERIC_TIME 765850265e8SSrinidhi Kasagar select GENERIC_CLOCKEVENTS 766850265e8SSrinidhi Kasagar select COMMON_CLKDEV 767850265e8SSrinidhi Kasagar help 768850265e8SSrinidhi Kasagar Support for ST-Ericsson's Ux500 architecture 769850265e8SSrinidhi Kasagar 7701da177e4SLinus Torvaldsendchoice 7711da177e4SLinus Torvalds 7721da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 7731da177e4SLinus Torvalds 774e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 775e7736d47SLennert Buytenhek 7761da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 7771da177e4SLinus Torvalds 77859d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 77959d3a193SPaulius Zaleckas 7801da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 7811da177e4SLinus Torvalds 7823f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 7833f7e5815SLennert Buytenhek 7843f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 7851da177e4SLinus Torvalds 786285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 787285f5fa7SDan Williams 7881da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 7911da177e4SLinus Torvalds 792c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 793c4713074SLennert Buytenhek 794777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig" 795777f9bebSLennert Buytenhek 796794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 797794d15b2SStanislav Samsonov 7981da177e4SLinus Torvaldssource "arch/arm/mach-pxa/Kconfig" 799bd5ce433SEric Miaosource "arch/arm/plat-pxa/Kconfig" 8001da177e4SLinus Torvalds 80149cbe786SEric Miaosource "arch/arm/mach-mmp/Kconfig" 80249cbe786SEric Miao 8031da177e4SLinus Torvaldssource "arch/arm/mach-sa1100/Kconfig" 8041da177e4SLinus Torvalds 805d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 806d48af15eSTony Lindgren 807d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 8081da177e4SLinus Torvalds 8091dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 8101dbae815STony Lindgren 8119dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 812585cf175STzachi Perelstein 813651c74c7SSaeed Bisharasource "arch/arm/mach-kirkwood/Kconfig" 8141da177e4SLinus Torvalds 815edabd38eSSaeed Bisharasource "arch/arm/mach-dove/Kconfig" 816edabd38eSSaeed Bishara 817cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 818a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 819c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig" 8205a7652f2SByungho Minsource "arch/arm/plat-s5pc1xx/Kconfig" 821a21765a7SBen Dooks 822a21765a7SBen Dooksif ARCH_S3C2410 823a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig" 8241da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig" 825a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 826a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 827e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig" 828a21765a7SBen Dooksendif 8291da177e4SLinus Torvalds 830a08ab637SBen Dooksif ARCH_S3C64XX 831431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig" 832a08ab637SBen Dooksendif 833a08ab637SBen Dooks 834c4ffccddSKukjin Kimsource "arch/arm/mach-s5p6440/Kconfig" 835c4ffccddSKukjin Kim 836550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig" 837550db7f1SKukjin Kim 8387bd0f2f5Sdmitry pervushinsource "arch/arm/plat-stmp3xxx/Kconfig" 8397bd0f2f5Sdmitry pervushin 8405a7652f2SByungho Minif ARCH_S5PC1XX 8415a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 8425a7652f2SByungho Minendif 8435a7652f2SByungho Min 844*170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig" 845*170f4e42SKukjin Kim 8461da177e4SLinus Torvaldssource "arch/arm/mach-lh7a40x/Kconfig" 8471da177e4SLinus Torvalds 8481da177e4SLinus Torvaldssource "arch/arm/mach-h720x/Kconfig" 8491da177e4SLinus Torvalds 8501da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 8511da177e4SLinus Torvalds 852038c5b60SBellido Nicolassource "arch/arm/mach-aaec2000/Kconfig" 853038c5b60SBellido Nicolas 8548ad68bbfSCatalin Marinassource "arch/arm/mach-realview/Kconfig" 8558ad68bbfSCatalin Marinas 8569d041268SAndrew Victorsource "arch/arm/mach-at91/Kconfig" 85773a59c1cSSAN People 85852c543f9SQuinn Jensensource "arch/arm/plat-mxc/Kconfig" 85952c543f9SQuinn Jensen 86028ad94ecSAlessandro Rubinisource "arch/arm/mach-nomadik/Kconfig" 86159b559d7SSrinidhi Kasagarsource "arch/arm/plat-nomadik/Kconfig" 86228ad94ecSAlessandro Rubini 863bb6d8c88SSascha Hauersource "arch/arm/mach-netx/Kconfig" 864bb6d8c88SSascha Hauer 8659918cda5SUwe Kleine-Königsource "arch/arm/mach-ns9xxx/Kconfig" 8669918cda5SUwe Kleine-König 8677c6337e2SKevin Hilmansource "arch/arm/mach-davinci/Kconfig" 8687c6337e2SKevin Hilman 869c53c9cf6SAndrew Victorsource "arch/arm/mach-ks8695/Kconfig" 870c53c9cf6SAndrew Victor 8719e73c84cSBrian Swetlandsource "arch/arm/mach-msm/Kconfig" 8729e73c84cSBrian Swetland 873d98aac75SLinus Walleijsource "arch/arm/mach-u300/Kconfig" 874d98aac75SLinus Walleij 8757ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 8767ec80ddfSwanzongshun 8776288e28dSLeo Chensource "arch/arm/mach-bcmring/Kconfig" 8786288e28dSLeo Chen 879850265e8SSrinidhi Kasagarsource "arch/arm/mach-ux500/Kconfig" 880850265e8SSrinidhi Kasagar 8811da177e4SLinus Torvalds# Definitions to make life easier 8821da177e4SLinus Torvaldsconfig ARCH_ACORN 8831da177e4SLinus Torvalds bool 8841da177e4SLinus Torvalds 8857ae1f7ecSLennert Buytenhekconfig PLAT_IOP 8867ae1f7ecSLennert Buytenhek bool 887469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 888980f2296SMikael Pettersson select GENERIC_TIME 8897ae1f7ecSLennert Buytenhek 89069b02f6aSLennert Buytenhekconfig PLAT_ORION 89169b02f6aSLennert Buytenhek bool 89269b02f6aSLennert Buytenhek 893bd5ce433SEric Miaoconfig PLAT_PXA 894bd5ce433SEric Miao bool 895bd5ce433SEric Miao 8961da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 8971da177e4SLinus Torvalds 898afe4b25eSLennert Buytenhekconfig IWMMXT 899afe4b25eSLennert Buytenhek bool "Enable iWMMXt support" 90040305a58SEric Miao depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 90140305a58SEric Miao default y if PXA27x || PXA3xx || ARCH_MMP 902afe4b25eSLennert Buytenhek help 903afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 904afe4b25eSLennert Buytenhek running on a CPU that supports it. 905afe4b25eSLennert Buytenhek 9061da177e4SLinus Torvalds# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 9071da177e4SLinus Torvaldsconfig XSCALE_PMU 9081da177e4SLinus Torvalds bool 9091da177e4SLinus Torvalds depends on CPU_XSCALE && !XSCALE_PMU_TIMER 9101da177e4SLinus Torvalds default y 9111da177e4SLinus Torvalds 9123b93e7b0SHyok S. Choiif !MMU 9133b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 9143b93e7b0SHyok S. Choiendif 9153b93e7b0SHyok S. Choi 9169cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 9179cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 9189cba3cccSCatalin Marinas depends on CPU_V6 && !SMP 9199cba3cccSCatalin Marinas help 9209cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 9219cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 9229cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 9239cba3cccSCatalin Marinas recommended workaround. 9249cba3cccSCatalin Marinas 9257ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 9267ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 9277ce236fcSCatalin Marinas depends on CPU_V7 9287ce236fcSCatalin Marinas help 9297ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 9307ce236fcSCatalin Marinas (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 9317ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 9327ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 9337ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 9347ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 9357ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 9367ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 9377ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 9387ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 9397ce236fcSCatalin Marinas available in non-secure mode. 9407ce236fcSCatalin Marinas 941855c551fSCatalin Marinasconfig ARM_ERRATA_458693 942855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 943855c551fSCatalin Marinas depends on CPU_V7 944855c551fSCatalin Marinas help 945855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 946855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 947855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 948855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 949855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 950855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 951855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 952855c551fSCatalin Marinas register may not be available in non-secure mode. 953855c551fSCatalin Marinas 9540516e464SCatalin Marinasconfig ARM_ERRATA_460075 9550516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 9560516e464SCatalin Marinas depends on CPU_V7 9570516e464SCatalin Marinas help 9580516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 9590516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 9600516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 9610516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 9620516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 9630516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 9640516e464SCatalin Marinas may not be available in non-secure mode. 9650516e464SCatalin Marinas 9661da177e4SLinus Torvaldsendmenu 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 9691da177e4SLinus Torvalds 9701da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER 9711da177e4SLinus Torvalds int 9721da177e4SLinus Torvalds depends on SA1111 9731da177e4SLinus Torvalds default "9" 9741da177e4SLinus Torvalds 9751da177e4SLinus Torvaldsmenu "Bus support" 9761da177e4SLinus Torvalds 9771da177e4SLinus Torvaldsconfig ARM_AMBA 9781da177e4SLinus Torvalds bool 9791da177e4SLinus Torvalds 9801da177e4SLinus Torvaldsconfig ISA 9811da177e4SLinus Torvalds bool 9821da177e4SLinus Torvalds help 9831da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 9841da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 9851da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 9861da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 9871da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 9881da177e4SLinus Torvalds 989065909b9SRussell King# Select ISA DMA controller support 9901da177e4SLinus Torvaldsconfig ISA_DMA 9911da177e4SLinus Torvalds bool 992065909b9SRussell King select ISA_DMA_API 9931da177e4SLinus Torvalds 994065909b9SRussell King# Select ISA DMA interface 9955cae841bSAl Viroconfig ISA_DMA_API 9965cae841bSAl Viro bool 9975cae841bSAl Viro 9981da177e4SLinus Torvaldsconfig PCI 999a0113a99SMike Rapoport bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE 10001da177e4SLinus Torvalds help 10011da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 10021da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 10031da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 10041da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 10051da177e4SLinus Torvalds 100636e23590SMatthew Wilcoxconfig PCI_SYSCALL 100736e23590SMatthew Wilcox def_bool PCI 100836e23590SMatthew Wilcox 10091da177e4SLinus Torvalds# Select the host bridge type 10101da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505 10111da177e4SLinus Torvalds bool 10121da177e4SLinus Torvalds depends on PCI && ARCH_SHARK 10131da177e4SLinus Torvalds default y 10141da177e4SLinus Torvalds 1015a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 1016a0113a99SMike Rapoport bool 1017a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 1018a0113a99SMike Rapoport default y 1019a0113a99SMike Rapoport select DMABOUNCE 1020a0113a99SMike Rapoport 10211da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 10221da177e4SLinus Torvalds 10231da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 10241da177e4SLinus Torvalds 10251da177e4SLinus Torvaldsendmenu 10261da177e4SLinus Torvalds 10271da177e4SLinus Torvaldsmenu "Kernel Features" 10281da177e4SLinus Torvalds 10290567a0c0SKevin Hilmansource "kernel/time/Kconfig" 10300567a0c0SKevin Hilman 10311da177e4SLinus Torvaldsconfig SMP 10321da177e4SLinus Torvalds bool "Symmetric Multi-Processing (EXPERIMENTAL)" 103342578c82SRussell King depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1034850265e8SSrinidhi Kasagar MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 1035bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 1036f6dd9fa5SJens Axboe select USE_GENERIC_SMP_HELPERS 1037850265e8SSrinidhi Kasagar select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 10381da177e4SLinus Torvalds help 10391da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 10401da177e4SLinus Torvalds a system with only one CPU, like most personal computers, say N. If 10411da177e4SLinus Torvalds you have a system with more than one CPU, say Y. 10421da177e4SLinus Torvalds 10431da177e4SLinus Torvalds If you say N here, the kernel will run on single and multiprocessor 10441da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 10451da177e4SLinus Torvalds you say Y here, the kernel will run on many, but not all, single 10461da177e4SLinus Torvalds processor machines. On a single processor machine, the kernel will 10471da177e4SLinus Torvalds run faster if you say N here. 10481da177e4SLinus Torvalds 104903502faaSAdrian Bunk See also <file:Documentation/i386/IO-APIC.txt>, 10501da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 10511da177e4SLinus Torvalds <http://www.linuxdoc.org/docs.html#howto>. 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds If you don't know what to do here, say N. 10541da177e4SLinus Torvalds 1055a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1056a8cbcd92SRussell King bool 1057a8cbcd92SRussell King depends on SMP 1058a8cbcd92SRussell King help 1059a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1060a8cbcd92SRussell King 1061f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1062f32f4ce2SRussell King bool 1063f32f4ce2SRussell King depends on SMP 1064f32f4ce2SRussell King help 1065f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1066f32f4ce2SRussell King 10678d5796d2SLennert Buytenhekchoice 10688d5796d2SLennert Buytenhek prompt "Memory split" 10698d5796d2SLennert Buytenhek default VMSPLIT_3G 10708d5796d2SLennert Buytenhek help 10718d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 10728d5796d2SLennert Buytenhek 10738d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 10748d5796d2SLennert Buytenhek option alone! 10758d5796d2SLennert Buytenhek 10768d5796d2SLennert Buytenhek config VMSPLIT_3G 10778d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 10788d5796d2SLennert Buytenhek config VMSPLIT_2G 10798d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 10808d5796d2SLennert Buytenhek config VMSPLIT_1G 10818d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 10828d5796d2SLennert Buytenhekendchoice 10838d5796d2SLennert Buytenhek 10848d5796d2SLennert Buytenhekconfig PAGE_OFFSET 10858d5796d2SLennert Buytenhek hex 10868d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 10878d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 10888d5796d2SLennert Buytenhek default 0xC0000000 10898d5796d2SLennert Buytenhek 10901da177e4SLinus Torvaldsconfig NR_CPUS 10911da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 10921da177e4SLinus Torvalds range 2 32 10931da177e4SLinus Torvalds depends on SMP 10941da177e4SLinus Torvalds default "4" 10951da177e4SLinus Torvalds 1096a054a811SRussell Kingconfig HOTPLUG_CPU 1097a054a811SRussell King bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1098a054a811SRussell King depends on SMP && HOTPLUG && EXPERIMENTAL 1099a054a811SRussell King help 1100a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1101a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1102a054a811SRussell King 110337ee16aeSRussell Kingconfig LOCAL_TIMERS 110437ee16aeSRussell King bool "Use local timer interrupts" 110542578c82SRussell King depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1106850265e8SSrinidhi Kasagar REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 110737ee16aeSRussell King default y 1108850265e8SSrinidhi Kasagar select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 110937ee16aeSRussell King help 111037ee16aeSRussell King Enable support for local timers on SMP platforms, rather then the 111137ee16aeSRussell King legacy IPI broadcast method. Local timers allows the system 111237ee16aeSRussell King accounting to be spread across the timer interval, preventing a 111337ee16aeSRussell King "thundering herd" at every timer tick. 111437ee16aeSRussell King 1115d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 11161da177e4SLinus Torvalds 1117f8065813SRussell Kingconfig HZ 1118f8065813SRussell King int 1119f8065813SRussell King default 128 if ARCH_L7200 1120*170f4e42SKukjin Kim default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210 1121bfe65704SRussell King default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 11225248c657SDavid Brownell default AT91_TIMER_HZ if ARCH_AT91 1123f8065813SRussell King default 100 1124f8065813SRussell King 112516c79651SCatalin Marinasconfig THUMB2_KERNEL 112616c79651SCatalin Marinas bool "Compile the kernel in Thumb-2 mode" 112716c79651SCatalin Marinas depends on CPU_V7 && EXPERIMENTAL 112816c79651SCatalin Marinas select AEABI 112916c79651SCatalin Marinas select ARM_ASM_UNIFIED 113016c79651SCatalin Marinas help 113116c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 113216c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 113316c79651SCatalin Marinas ARM-Thumb syntax is needed. 113416c79651SCatalin Marinas 113516c79651SCatalin Marinas If unsure, say N. 113616c79651SCatalin Marinas 11370becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 11380becb088SCatalin Marinas bool 11390becb088SCatalin Marinas 1140704bdda0SNicolas Pitreconfig AEABI 1141704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1142704bdda0SNicolas Pitre help 1143704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1144704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1145704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1146704bdda0SNicolas Pitre 1147704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1148704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1149704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1150704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1151704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1152704bdda0SNicolas Pitre 1153704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1154704bdda0SNicolas Pitre 11556c90c872SNicolas Pitreconfig OABI_COMPAT 1156a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 115761c484d4SNicolas Pitre depends on AEABI && EXPERIMENTAL 11586c90c872SNicolas Pitre default y 11596c90c872SNicolas Pitre help 11606c90c872SNicolas Pitre This option preserves the old syscall interface along with the 11616c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 11626c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 11636c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 11646c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 11656c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 11666c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 11676c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 11686c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 11696c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 11706c90c872SNicolas Pitre at all). If in doubt say Y. 11716c90c872SNicolas Pitre 1172eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1173e80d6a24SMel Gorman bool 1174e80d6a24SMel Gorman 117507a2f737SRussell King# Discontigmem is deprecated 11763f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE 11771da177e4SLinus Torvalds bool 11781da177e4SLinus Torvalds 117905944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 118005944d74SRussell King bool 118105944d74SRussell King 118207a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 118307a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 118407a2f737SRussell King 118505944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 118607a2f737SRussell King def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE 118705944d74SRussell King 1188c80d79d7SYasunori Gotoconfig NODES_SHIFT 1189c80d79d7SYasunori Goto int 1190c80d79d7SYasunori Goto default "4" if ARCH_LH7A40X 1191c80d79d7SYasunori Goto default "2" 1192c80d79d7SYasunori Goto depends on NEED_MULTIPLE_NODES 1193c80d79d7SYasunori Goto 1194053a96caSNicolas Pitreconfig HIGHMEM 1195053a96caSNicolas Pitre bool "High Memory Support (EXPERIMENTAL)" 1196053a96caSNicolas Pitre depends on MMU && EXPERIMENTAL 1197053a96caSNicolas Pitre help 1198053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1199053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1200053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1201053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1202053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1203053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1204053a96caSNicolas Pitre 1205053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1206053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1207053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1208053a96caSNicolas Pitre 1209053a96caSNicolas Pitre If unsure, say n. 1210053a96caSNicolas Pitre 121165cec8e3SRussell Kingconfig HIGHPTE 121265cec8e3SRussell King bool "Allocate 2nd-level pagetables from highmem" 121365cec8e3SRussell King depends on HIGHMEM 121465cec8e3SRussell King depends on !OUTER_CACHE 121565cec8e3SRussell King 12163f22ab27SDave Hansensource "mm/Kconfig" 12173f22ab27SDave Hansen 12181da177e4SLinus Torvaldsconfig LEDS 12191da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1220e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 12218c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 12221da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 12231da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 122473a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 122525329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1226ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 12271da177e4SLinus Torvalds help 12281da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 12291da177e4SLinus Torvalds to provide useful information about your current system status. 12301da177e4SLinus Torvalds 12311da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 12321da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 12331da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 12341da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 12351da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 12361da177e4SLinus Torvalds system, but the driver will do nothing. 12371da177e4SLinus Torvalds 12381da177e4SLinus Torvaldsconfig LEDS_TIMER 12391da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1240eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1241eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12421da177e4SLinus Torvalds depends on LEDS 12430567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 12441da177e4SLinus Torvalds default y if ARCH_EBSA110 12451da177e4SLinus Torvalds help 12461da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 12471da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 12481da177e4SLinus Torvalds will flash regularly to indicate that the system is still 12491da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 12501da177e4SLinus Torvalds debugging unstable kernels. 12511da177e4SLinus Torvalds 12521da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12531da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12541da177e4SLinus Torvalds will overrule the CPU usage LED. 12551da177e4SLinus Torvalds 12561da177e4SLinus Torvaldsconfig LEDS_CPU 12571da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1258eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1259eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1260eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12611da177e4SLinus Torvalds depends on LEDS 12621da177e4SLinus Torvalds help 12631da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 12641da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 12651da177e4SLinus Torvalds is not currently executing. 12661da177e4SLinus Torvalds 12671da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12681da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12691da177e4SLinus Torvalds will overrule the CPU usage LED. 12701da177e4SLinus Torvalds 12711da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 12721da177e4SLinus Torvalds bool 1273f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 12741da177e4SLinus Torvalds default y if !ARCH_EBSA110 12751da177e4SLinus Torvalds help 12761da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 12771da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 12781da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 12791da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 12801da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 12811da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 12821da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 12831da177e4SLinus Torvalds 128439ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 128539ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 128639ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 128739ec58f3SLennert Buytenhek default y if CPU_FEROCEON 128839ec58f3SLennert Buytenhek help 128939ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 129039ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 129139ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 129239ec58f3SLennert Buytenhek 129339ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 129439ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 129539ec58f3SLennert Buytenhek such copy operations with large buffers. 129639ec58f3SLennert Buytenhek 129739ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 129839ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 129939ec58f3SLennert Buytenhek 13001da177e4SLinus Torvaldsendmenu 13011da177e4SLinus Torvalds 13021da177e4SLinus Torvaldsmenu "Boot options" 13031da177e4SLinus Torvalds 13041da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 13051da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 13061da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 13071da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 13081da177e4SLinus Torvalds default "0" 13091da177e4SLinus Torvalds help 13101da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 13111da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 13121da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 13131da177e4SLinus Torvalds value in their defconfig file. 13141da177e4SLinus Torvalds 13151da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 13161da177e4SLinus Torvalds 13171da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 13181da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 13191da177e4SLinus Torvalds default "0" 13201da177e4SLinus Torvalds help 1321f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1322f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1323f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1324f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1325f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1326f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 13271da177e4SLinus Torvalds 13281da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 13291da177e4SLinus Torvalds 13301da177e4SLinus Torvaldsconfig ZBOOT_ROM 13311da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 13321da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 13331da177e4SLinus Torvalds help 13341da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 13351da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 13361da177e4SLinus Torvalds 13371da177e4SLinus Torvaldsconfig CMDLINE 13381da177e4SLinus Torvalds string "Default kernel command string" 13391da177e4SLinus Torvalds default "" 13401da177e4SLinus Torvalds help 13411da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 13421da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 13431da177e4SLinus Torvalds architectures, you should supply some command-line options at build 13441da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 13451da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 13461da177e4SLinus Torvalds 13471da177e4SLinus Torvaldsconfig XIP_KERNEL 13481da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 13491da177e4SLinus Torvalds depends on !ZBOOT_ROM 13501da177e4SLinus Torvalds help 13511da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 13521da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 13531da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 13541da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 13551da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 13561da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 13571da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 13581da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 13591da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 13601da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 13611da177e4SLinus Torvalds 13621da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 13631da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 13641da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 13651da177e4SLinus Torvalds 13661da177e4SLinus Torvalds If unsure, say N. 13671da177e4SLinus Torvalds 13681da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 13691da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 13701da177e4SLinus Torvalds depends on XIP_KERNEL 13711da177e4SLinus Torvalds default "0x00080000" 13721da177e4SLinus Torvalds help 13731da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 13741da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 13751da177e4SLinus Torvalds own flash usage. 13761da177e4SLinus Torvalds 1377c587e4a6SRichard Purdieconfig KEXEC 1378c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 1379c587e4a6SRichard Purdie depends on EXPERIMENTAL 1380c587e4a6SRichard Purdie help 1381c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1382c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 138301dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1384c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1385c587e4a6SRichard Purdie 1386c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1387c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1388c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 1389c587e4a6SRichard Purdie support. 1390c587e4a6SRichard Purdie 13914cd9d6f7SRichard Purdieconfig ATAGS_PROC 13924cd9d6f7SRichard Purdie bool "Export atags in procfs" 1393b98d7291SUli Luckas depends on KEXEC 1394b98d7291SUli Luckas default y 13954cd9d6f7SRichard Purdie help 13964cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 13974cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 13984cd9d6f7SRichard Purdie 13991da177e4SLinus Torvaldsendmenu 14001da177e4SLinus Torvalds 1401ac9d7efcSRussell Kingmenu "CPU Power Management" 14021da177e4SLinus Torvalds 140389c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 14041da177e4SLinus Torvalds 14051da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 14061da177e4SLinus Torvalds 14071da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 14081da177e4SLinus Torvalds bool 14091da177e4SLinus Torvalds 14101da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 14111da177e4SLinus Torvalds bool 14121da177e4SLinus Torvalds 14131da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 14141da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 14151da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 14161da177e4SLinus Torvalds default y 14171da177e4SLinus Torvalds help 14181da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 14191da177e4SLinus Torvalds 14201da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 14211da177e4SLinus Torvalds 14221da177e4SLinus Torvalds If in doubt, say Y. 14231da177e4SLinus Torvalds 14249e2697ffSRussell Kingconfig CPU_FREQ_PXA 14259e2697ffSRussell King bool 14269e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 14279e2697ffSRussell King default y 14289e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 14299e2697ffSRussell King 1430b3748dddSMark Brownconfig CPU_FREQ_S3C64XX 1431b3748dddSMark Brown bool "CPUfreq support for Samsung S3C64XX CPUs" 1432b3748dddSMark Brown depends on CPU_FREQ && CPU_S3C6410 1433b3748dddSMark Brown 14349d56c02aSBen Dooksconfig CPU_FREQ_S3C 14359d56c02aSBen Dooks bool 14369d56c02aSBen Dooks help 14379d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 14389d56c02aSBen Dooks 14399d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 14409d56c02aSBen Dooks bool "CPUfreq driver for Samsung S3C24XX series CPUs" 14419d56c02aSBen Dooks depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 14429d56c02aSBen Dooks select CPU_FREQ_S3C 14439d56c02aSBen Dooks help 14449d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 14459d56c02aSBen Dooks of CPUs. 14469d56c02aSBen Dooks 14479d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 14489d56c02aSBen Dooks 14499d56c02aSBen Dooks If in doubt, say N. 14509d56c02aSBen Dooks 14519d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 14529d56c02aSBen Dooks bool "Support CPUfreq changing of PLL frequency" 14539d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 14549d56c02aSBen Dooks help 14559d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 14569d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 14579d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 14589d56c02aSBen Dooks 14599d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 14609d56c02aSBen Dooks be built which may increase the size of the kernel image. 14619d56c02aSBen Dooks 14629d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 14639d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 14649d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14659d56c02aSBen Dooks help 14669d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 14679d56c02aSBen Dooks 14689d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 14699d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 14709d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14719d56c02aSBen Dooks help 14729d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 14739d56c02aSBen Dooks 1474e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 1475e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 1476e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 1477e6d197a6SBen Dooks help 1478e6d197a6SBen Dooks Export status information via debugfs. 1479e6d197a6SBen Dooks 14801da177e4SLinus Torvaldsendif 14811da177e4SLinus Torvalds 1482ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 1483ac9d7efcSRussell King 1484ac9d7efcSRussell Kingendmenu 1485ac9d7efcSRussell King 14861da177e4SLinus Torvaldsmenu "Floating point emulation" 14871da177e4SLinus Torvalds 14881da177e4SLinus Torvaldscomment "At least one emulation must be selected" 14891da177e4SLinus Torvalds 14901da177e4SLinus Torvaldsconfig FPE_NWFPE 14911da177e4SLinus Torvalds bool "NWFPE math emulation" 14928993a44cSNicolas Pitre depends on !AEABI || OABI_COMPAT 14931da177e4SLinus Torvalds ---help--- 14941da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 14951da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 14961da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 14971da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 14981da177e4SLinus Torvalds 14991da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 15001da177e4SLinus Torvalds early in the bootup. 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 15031da177e4SLinus Torvalds bool "Support extended precision" 1504bedf142bSLennert Buytenhek depends on FPE_NWFPE 15051da177e4SLinus Torvalds help 15061da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 15071da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 15081da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 15091da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 15101da177e4SLinus Torvalds floating point emulator without any good reason. 15111da177e4SLinus Torvalds 15121da177e4SLinus Torvalds You almost surely want to say N here. 15131da177e4SLinus Torvalds 15141da177e4SLinus Torvaldsconfig FPE_FASTFPE 15151da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 15168993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 15171da177e4SLinus Torvalds ---help--- 15181da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 15191da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 15201da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 15211da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 15221da177e4SLinus Torvalds 15231da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 15241da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 15251da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 15261da177e4SLinus Torvalds choose NWFPE. 15271da177e4SLinus Torvalds 15281da177e4SLinus Torvaldsconfig VFP 15291da177e4SLinus Torvalds bool "VFP-format floating point maths" 1530c00d4ffdSRussell King depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 15311da177e4SLinus Torvalds help 15321da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 15331da177e4SLinus Torvalds if your hardware includes a VFP unit. 15341da177e4SLinus Torvalds 15351da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 15361da177e4SLinus Torvalds release notes and additional status information. 15371da177e4SLinus Torvalds 15381da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 15391da177e4SLinus Torvalds 154025ebee02SCatalin Marinasconfig VFPv3 154125ebee02SCatalin Marinas bool 154225ebee02SCatalin Marinas depends on VFP 154325ebee02SCatalin Marinas default y if CPU_V7 154425ebee02SCatalin Marinas 1545b5872db4SCatalin Marinasconfig NEON 1546b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 1547b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 1548b5872db4SCatalin Marinas help 1549b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1550b5872db4SCatalin Marinas Extension. 1551b5872db4SCatalin Marinas 15521da177e4SLinus Torvaldsendmenu 15531da177e4SLinus Torvalds 15541da177e4SLinus Torvaldsmenu "Userspace binary formats" 15551da177e4SLinus Torvalds 15561da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 15571da177e4SLinus Torvalds 15581da177e4SLinus Torvaldsconfig ARTHUR 15591da177e4SLinus Torvalds tristate "RISC OS personality" 1560704bdda0SNicolas Pitre depends on !AEABI 15611da177e4SLinus Torvalds help 15621da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 15631da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 15641da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 15651da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 15661da177e4SLinus Torvalds will be called arthur). 15671da177e4SLinus Torvalds 15681da177e4SLinus Torvaldsendmenu 15691da177e4SLinus Torvalds 15701da177e4SLinus Torvaldsmenu "Power management options" 15711da177e4SLinus Torvalds 1572eceab4acSRussell Kingsource "kernel/power/Kconfig" 15731da177e4SLinus Torvalds 1574f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 1575f4cb5700SJohannes Berg def_bool y 1576f4cb5700SJohannes Berg 15771da177e4SLinus Torvaldsendmenu 15781da177e4SLinus Torvalds 1579d5950b43SSam Ravnborgsource "net/Kconfig" 1580d5950b43SSam Ravnborg 1581ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 15821da177e4SLinus Torvalds 15831da177e4SLinus Torvaldssource "fs/Kconfig" 15841da177e4SLinus Torvalds 15851da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 15861da177e4SLinus Torvalds 15871da177e4SLinus Torvaldssource "security/Kconfig" 15881da177e4SLinus Torvalds 15891da177e4SLinus Torvaldssource "crypto/Kconfig" 15901da177e4SLinus Torvalds 15911da177e4SLinus Torvaldssource "lib/Kconfig" 1592