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_REQUIRE_GPIOLIB 314a2ab67faSRussell King select HAVE_CLK 31503e09cd8SUwe Kleine-König select COMMON_CLKDEV 316788c9700SRussell King help 317788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 318788c9700SRussell King 3197bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX 3207bd0f2f5Sdmitry pervushin bool "Freescale STMP3xxx" 3217bd0f2f5Sdmitry pervushin select CPU_ARM926T 3227bd0f2f5Sdmitry pervushin select HAVE_CLK 3237bd0f2f5Sdmitry pervushin select COMMON_CLKDEV 3247bd0f2f5Sdmitry pervushin select ARCH_REQUIRE_GPIOLIB 3257bd0f2f5Sdmitry pervushin select GENERIC_TIME 3267bd0f2f5Sdmitry pervushin select GENERIC_CLOCKEVENTS 3277bd0f2f5Sdmitry pervushin select GENERIC_GPIO 3287bd0f2f5Sdmitry pervushin select USB_ARCH_HAS_EHCI 3297bd0f2f5Sdmitry pervushin help 3307bd0f2f5Sdmitry pervushin Support for systems based on the Freescale 3xxx CPUs. 3317bd0f2f5Sdmitry pervushin 3324af6fee1SDeepak Saxenaconfig ARCH_NETX 3334af6fee1SDeepak Saxena bool "Hilscher NetX based" 334c750815eSRussell King select CPU_ARM926T 3354af6fee1SDeepak Saxena select ARM_VIC 3362fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 33721edecd3SUwe Kleine-König select GENERIC_TIME 338f999b8bdSMartin Michlmayr help 3394af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 3404af6fee1SDeepak Saxena 3414af6fee1SDeepak Saxenaconfig ARCH_H720X 3424af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 343c750815eSRussell King select CPU_ARM720T 3444af6fee1SDeepak Saxena select ISA_DMA_API 3454af6fee1SDeepak Saxena help 3464af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 3474af6fee1SDeepak Saxena 34828ad94ecSAlessandro Rubiniconfig ARCH_NOMADIK 34928ad94ecSAlessandro Rubini bool "STMicroelectronics Nomadik" 35028ad94ecSAlessandro Rubini select ARM_AMBA 35128ad94ecSAlessandro Rubini select ARM_VIC 35228ad94ecSAlessandro Rubini select CPU_ARM926T 35328ad94ecSAlessandro Rubini select HAVE_CLK 35428ad94ecSAlessandro Rubini select COMMON_CLKDEV 35528ad94ecSAlessandro Rubini select GENERIC_TIME 35628ad94ecSAlessandro Rubini select GENERIC_CLOCKEVENTS 3572ec1d359SAlessandro Rubini select GENERIC_GPIO 3582ec1d359SAlessandro Rubini select ARCH_REQUIRE_GPIOLIB 35928ad94ecSAlessandro Rubini help 36028ad94ecSAlessandro Rubini Support for the Nomadik platform by ST-Ericsson 36128ad94ecSAlessandro Rubini 3623b938be6SRussell Kingconfig ARCH_IOP13XX 3633b938be6SRussell King bool "IOP13xx-based" 3643b938be6SRussell King depends on MMU 365c750815eSRussell King select CPU_XSC3 3663b938be6SRussell King select PLAT_IOP 3673b938be6SRussell King select PCI 3683b938be6SRussell King select ARCH_SUPPORTS_MSI 3698d5796d2SLennert Buytenhek select VMSPLIT_1G 3703b938be6SRussell King help 3713b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 3723b938be6SRussell King 3733f7e5815SLennert Buytenhekconfig ARCH_IOP32X 3743f7e5815SLennert Buytenhek bool "IOP32x-based" 375a4f7e763SRussell King depends on MMU 376c750815eSRussell King select CPU_XSCALE 3777ae1f7ecSLennert Buytenhek select PLAT_IOP 378f7e68bbfSRussell King select PCI 37963f385cdSArnaud Patard select GENERIC_GPIO 380bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 381f999b8bdSMartin Michlmayr help 3823f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 3833f7e5815SLennert Buytenhek processors. 3843f7e5815SLennert Buytenhek 3853f7e5815SLennert Buytenhekconfig ARCH_IOP33X 3863f7e5815SLennert Buytenhek bool "IOP33x-based" 3873f7e5815SLennert Buytenhek depends on MMU 388c750815eSRussell King select CPU_XSCALE 3897ae1f7ecSLennert Buytenhek select PLAT_IOP 3903f7e5815SLennert Buytenhek select PCI 39163f385cdSArnaud Patard select GENERIC_GPIO 392bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 3933f7e5815SLennert Buytenhek help 3943f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 3951da177e4SLinus Torvalds 3963b938be6SRussell Kingconfig ARCH_IXP23XX 3973b938be6SRussell King bool "IXP23XX-based" 398588ef769SDan Williams depends on MMU 399c750815eSRussell King select CPU_XSC3 400285f5fa7SDan Williams select PCI 401285f5fa7SDan Williams help 4023b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 4031da177e4SLinus Torvalds 4041da177e4SLinus Torvaldsconfig ARCH_IXP2000 4051da177e4SLinus Torvalds bool "IXP2400/2800-based" 406a4f7e763SRussell King depends on MMU 407c750815eSRussell King select CPU_XSCALE 408f7e68bbfSRussell King select PCI 409f999b8bdSMartin Michlmayr help 410f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 4111da177e4SLinus Torvalds 4123b938be6SRussell Kingconfig ARCH_IXP4XX 4133b938be6SRussell King bool "IXP4xx-based" 414a4f7e763SRussell King depends on MMU 415c750815eSRussell King select CPU_XSCALE 4168858e9afSMilan Svoboda select GENERIC_GPIO 4173b938be6SRussell King select GENERIC_TIME 4183b938be6SRussell King select GENERIC_CLOCKEVENTS 419485bdde7SRussell King select DMABOUNCE if PCI 420c4713074SLennert Buytenhek help 4213b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 422c4713074SLennert Buytenhek 4231da177e4SLinus Torvaldsconfig ARCH_L7200 4241da177e4SLinus Torvalds bool "LinkUp-L7200" 425c750815eSRussell King select CPU_ARM720T 4261da177e4SLinus Torvalds select FIQ 4271da177e4SLinus Torvalds help 4281da177e4SLinus Torvalds Say Y here if you intend to run this kernel on a LinkUp Systems 4291da177e4SLinus Torvalds L7200 Software Development Board which uses an ARM720T processor. 4301da177e4SLinus Torvalds Information on this board can be obtained at: 4311da177e4SLinus Torvalds 4321da177e4SLinus Torvalds <http://www.linkupsys.com/> 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds If you have any questions or comments about the Linux kernel port 4351da177e4SLinus Torvalds to this board, send e-mail to <sjhill@cotw.com>. 4361da177e4SLinus Torvalds 437edabd38eSSaeed Bisharaconfig ARCH_DOVE 438edabd38eSSaeed Bishara bool "Marvell Dove" 439edabd38eSSaeed Bishara select PCI 440edabd38eSSaeed Bishara select GENERIC_GPIO 441edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 442edabd38eSSaeed Bishara select GENERIC_TIME 443edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 444edabd38eSSaeed Bishara select PLAT_ORION 445edabd38eSSaeed Bishara help 446edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 447edabd38eSSaeed Bishara 448651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 449651c74c7SSaeed Bishara bool "Marvell Kirkwood" 450c750815eSRussell King select CPU_FEROCEON 451651c74c7SSaeed Bishara select PCI 4524c213430SLennert Buytenhek select GENERIC_GPIO 453a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 454651c74c7SSaeed Bishara select GENERIC_TIME 455651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 456651c74c7SSaeed Bishara select PLAT_ORION 457651c74c7SSaeed Bishara help 458651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 459651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 460651c74c7SSaeed Bishara 461788c9700SRussell Kingconfig ARCH_LOKI 462788c9700SRussell King bool "Marvell Loki (88RC8480)" 463788c9700SRussell King select CPU_FEROCEON 464788c9700SRussell King select GENERIC_TIME 465788c9700SRussell King select GENERIC_CLOCKEVENTS 466788c9700SRussell King select PLAT_ORION 467788c9700SRussell King help 468788c9700SRussell King Support for the Marvell Loki (88RC8480) SoC. 469788c9700SRussell King 470788c9700SRussell Kingconfig ARCH_MV78XX0 471788c9700SRussell King bool "Marvell MV78xx0" 472788c9700SRussell King select CPU_FEROCEON 473788c9700SRussell King select PCI 474788c9700SRussell King select GENERIC_GPIO 475a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 476788c9700SRussell King select GENERIC_TIME 477788c9700SRussell King select GENERIC_CLOCKEVENTS 478788c9700SRussell King select PLAT_ORION 479788c9700SRussell King help 480788c9700SRussell King Support for the following Marvell MV78xx0 series SoCs: 481788c9700SRussell King MV781x0, MV782x0. 482788c9700SRussell King 483788c9700SRussell Kingconfig ARCH_ORION5X 484788c9700SRussell King bool "Marvell Orion" 485788c9700SRussell King depends on MMU 486788c9700SRussell King select CPU_FEROCEON 487788c9700SRussell King select PCI 488788c9700SRussell King select GENERIC_GPIO 489a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 490788c9700SRussell King select GENERIC_TIME 491788c9700SRussell King select GENERIC_CLOCKEVENTS 492788c9700SRussell King select PLAT_ORION 493788c9700SRussell King help 494788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 495788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 496788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 497788c9700SRussell King 498788c9700SRussell Kingconfig ARCH_MMP 4992f7e8faeSHaojian Zhuang bool "Marvell PXA168/910/MMP2" 500788c9700SRussell King depends on MMU 501788c9700SRussell King select GENERIC_GPIO 502788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 503788c9700SRussell King select HAVE_CLK 504788c9700SRussell King select COMMON_CLKDEV 505788c9700SRussell King select GENERIC_TIME 506788c9700SRussell King select GENERIC_CLOCKEVENTS 507788c9700SRussell King select TICK_ONESHOT 508788c9700SRussell King select PLAT_PXA 509788c9700SRussell King help 5102f7e8faeSHaojian Zhuang Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 511788c9700SRussell King 512c53c9cf6SAndrew Victorconfig ARCH_KS8695 513c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 514c750815eSRussell King select CPU_ARM922T 5158a87a996SAndrew Victor select GENERIC_GPIO 51672880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 517c53c9cf6SAndrew Victor help 518c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 519c53c9cf6SAndrew Victor System-on-Chip devices. 520c53c9cf6SAndrew Victor 5219918cda5SUwe Kleine-Königconfig ARCH_NS9XXX 5229918cda5SUwe Kleine-König bool "NetSilicon NS9xxx" 523c750815eSRussell King select CPU_ARM926T 524689f2a01SUwe Kleine-König select GENERIC_GPIO 525cef5975dSUwe Kleine-König select GENERIC_TIME 526c0bb87f7SUwe Kleine-König select GENERIC_CLOCKEVENTS 5279483a578SDavid Brownell select HAVE_CLK 5289918cda5SUwe Kleine-König help 5299918cda5SUwe Kleine-König Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 5309918cda5SUwe Kleine-König System. 5319918cda5SUwe Kleine-König 5329918cda5SUwe Kleine-König <http://www.digi.com/products/microprocessors/index.jsp> 5339918cda5SUwe Kleine-König 534788c9700SRussell Kingconfig ARCH_W90X900 535788c9700SRussell King bool "Nuvoton W90X900 CPU" 536788c9700SRussell King select CPU_ARM926T 537c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 538c52d3d68Swanzongshun select GENERIC_GPIO 539d2c24195Swanzongshun select HAVE_CLK 5400e4a34bbSwanzongshun select COMMON_CLKDEV 54158b5369eSwanzongshun select GENERIC_TIME 54258b5369eSwanzongshun select GENERIC_CLOCKEVENTS 543777f9bebSLennert Buytenhek help 544a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 545a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 546a8bc4eadSwanzongshun the ARM series product line, you can login the following 547a8bc4eadSwanzongshun link address to know more. 548a8bc4eadSwanzongshun 549a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 550a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 551585cf175STzachi Perelstein 5524af6fee1SDeepak Saxenaconfig ARCH_PNX4008 5534af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 554c750815eSRussell King select CPU_ARM926T 5559483a578SDavid Brownell select HAVE_CLK 5564af6fee1SDeepak Saxena help 5574af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 5584af6fee1SDeepak Saxena 5591da177e4SLinus Torvaldsconfig ARCH_PXA 5602c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 561a4f7e763SRussell King depends on MMU 562034d2f5aSAl Viro select ARCH_MTD_XIP 56389c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 5640a938b97SDavid Brownell select GENERIC_GPIO 5659483a578SDavid Brownell select HAVE_CLK 5668c3abc7dSRussell King select COMMON_CLKDEV 5677444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 56845cf5eefSNicolas Pitre select GENERIC_TIME 569981d0f39SEric Miao select GENERIC_CLOCKEVENTS 570a88264c2SRussell King select TICK_ONESHOT 571bd5ce433SEric Miao select PLAT_PXA 572f999b8bdSMartin Michlmayr help 5732c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 5741da177e4SLinus Torvalds 575788c9700SRussell Kingconfig ARCH_MSM 576788c9700SRussell King bool "Qualcomm MSM" 577788c9700SRussell King select CPU_V6 57849cbe786SEric Miao select GENERIC_TIME 57949cbe786SEric Miao select GENERIC_CLOCKEVENTS 58049cbe786SEric Miao help 581788c9700SRussell King Support for Qualcomm MSM7K based systems. This runs on the ARM11 582788c9700SRussell King apps processor of the MSM7K and depends on a shared memory 583788c9700SRussell King interface to the ARM9 modem processor which runs the baseband stack 584788c9700SRussell King and controls some vital subsystems (clock and power control, etc). 58549cbe786SEric Miao 586c793c1b0SMagnus Dammconfig ARCH_SHMOBILE 587c793c1b0SMagnus Damm bool "Renesas SH-Mobile" 588c793c1b0SMagnus Damm help 589c793c1b0SMagnus Damm Support for Renesas's SH-Mobile ARM platforms 590c793c1b0SMagnus Damm 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" 63489f1fa08SBen Dooks select PLAT_SAMSUNG 63589f0ce72SBen Dooks select CPU_V6 636a08ab637SBen Dooks select GENERIC_GPIO 63789f0ce72SBen Dooks select ARM_VIC 638a08ab637SBen Dooks select HAVE_CLK 63989f0ce72SBen Dooks select NO_IOPORT 64089c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 64189f0ce72SBen Dooks select ARCH_REQUIRE_GPIOLIB 64289f0ce72SBen Dooks select SAMSUNG_CLKSRC 64389f0ce72SBen Dooks select SAMSUNG_IRQ_VIC_TIMER 64489f0ce72SBen Dooks select SAMSUNG_IRQ_UART 64589f0ce72SBen Dooks select S3C_GPIO_TRACK 64689f0ce72SBen Dooks select S3C_GPIO_PULL_UPDOWN 64789f0ce72SBen Dooks select S3C_GPIO_CFG_S3C24XX 64889f0ce72SBen Dooks select S3C_GPIO_CFG_S3C64XX 64989f0ce72SBen Dooks select S3C_DEV_NAND 65089f0ce72SBen Dooks select USB_ARCH_HAS_OHCI 65189f0ce72SBen Dooks select SAMSUNG_GPIOLIB_4BIT 652a08ab637SBen Dooks help 653a08ab637SBen Dooks Samsung S3C64XX series based systems 654a08ab637SBen Dooks 655c4ffccddSKukjin Kimconfig ARCH_S5P6440 656c4ffccddSKukjin Kim bool "Samsung S5P6440" 657c4ffccddSKukjin Kim select CPU_V6 658c4ffccddSKukjin Kim select GENERIC_GPIO 659c4ffccddSKukjin Kim select HAVE_CLK 660c4ffccddSKukjin Kim help 661c4ffccddSKukjin Kim Samsung S5P6440 CPU based systems 662c4ffccddSKukjin Kim 663550db7f1SKukjin Kimconfig ARCH_S5P6442 664550db7f1SKukjin Kim bool "Samsung S5P6442" 665550db7f1SKukjin Kim select CPU_V6 666550db7f1SKukjin Kim select GENERIC_GPIO 667550db7f1SKukjin Kim select HAVE_CLK 668550db7f1SKukjin Kim help 669550db7f1SKukjin Kim Samsung S5P6442 CPU based systems 670550db7f1SKukjin Kim 6715a7652f2SByungho Minconfig ARCH_S5PC1XX 6725a7652f2SByungho Min bool "Samsung S5PC1XX" 6735a7652f2SByungho Min select GENERIC_GPIO 6745a7652f2SByungho Min select HAVE_CLK 6755a7652f2SByungho Min select CPU_V7 6765a7652f2SByungho Min help 6775a7652f2SByungho Min Samsung S5PC1XX series based systems 6785a7652f2SByungho Min 679170f4e42SKukjin Kimconfig ARCH_S5PV210 680170f4e42SKukjin Kim bool "Samsung S5PV210/S5PC110" 681170f4e42SKukjin Kim select CPU_V7 682170f4e42SKukjin Kim select GENERIC_GPIO 683170f4e42SKukjin Kim select HAVE_CLK 684170f4e42SKukjin Kim select ARM_L1_CACHE_SHIFT_6 685170f4e42SKukjin Kim help 686170f4e42SKukjin Kim Samsung S5PV210/S5PC110 series based systems 687170f4e42SKukjin Kim 6881da177e4SLinus Torvaldsconfig ARCH_SHARK 6891da177e4SLinus Torvalds bool "Shark" 690c750815eSRussell King select CPU_SA110 691f7e68bbfSRussell King select ISA 692f7e68bbfSRussell King select ISA_DMA 6933bca103aSNicolas Pitre select ZONE_DMA 694f7e68bbfSRussell King select PCI 695f999b8bdSMartin Michlmayr help 696f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 697f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvaldsconfig ARCH_LH7A40X 7001da177e4SLinus Torvalds bool "Sharp LH7A40X" 701c750815eSRussell King select CPU_ARM922T 7024ba3f7c5SRussell King select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM 7034ba3f7c5SRussell King select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 7041da177e4SLinus Torvalds help 7051da177e4SLinus Torvalds Say Y here for systems based on one of the Sharp LH7A40X 7061da177e4SLinus Torvalds System on a Chip processors. These CPUs include an ARM922T 7071da177e4SLinus Torvalds core with a wide array of integrated devices for 7081da177e4SLinus Torvalds hand-held and low-power applications. 7091da177e4SLinus Torvalds 710d98aac75SLinus Walleijconfig ARCH_U300 711d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 712d98aac75SLinus Walleij depends on MMU 713d98aac75SLinus Walleij select CPU_ARM926T 714bc581770SLinus Walleij select HAVE_TCM 715d98aac75SLinus Walleij select ARM_AMBA 716d98aac75SLinus Walleij select ARM_VIC 717d98aac75SLinus Walleij select GENERIC_TIME 718d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 719d98aac75SLinus Walleij select HAVE_CLK 720d98aac75SLinus Walleij select COMMON_CLKDEV 721d98aac75SLinus Walleij select GENERIC_GPIO 722d98aac75SLinus Walleij help 723d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 724d98aac75SLinus Walleij 7257c6337e2SKevin Hilmanconfig ARCH_DAVINCI 7267c6337e2SKevin Hilman bool "TI DaVinci" 727c750815eSRussell King select CPU_ARM926T 7287c6337e2SKevin Hilman select GENERIC_TIME 7297c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 7303d9edf09SVladimir Barinov select GENERIC_GPIO 731dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 7329483a578SDavid Brownell select HAVE_CLK 7333bca103aSNicolas Pitre select ZONE_DMA 7349232fcc9SKevin Hilman select HAVE_IDE 735c5b736d0SKevin Hilman select COMMON_CLKDEV 73620e9969bSDavid Brownell select GENERIC_ALLOCATOR 737ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 7387c6337e2SKevin Hilman help 7397c6337e2SKevin Hilman Support for TI's DaVinci platform. 7407c6337e2SKevin Hilman 7413b938be6SRussell Kingconfig ARCH_OMAP 7423b938be6SRussell King bool "TI OMAP" 7433b938be6SRussell King select GENERIC_GPIO 7449483a578SDavid Brownell select HAVE_CLK 7457444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 74689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 7473b938be6SRussell King select GENERIC_TIME 74806cad098SKevin Hilman select GENERIC_CLOCKEVENTS 7499af915daSSriram select ARCH_HAS_HOLES_MEMORYMODEL 7503b938be6SRussell King help 7513b938be6SRussell King Support for TI's OMAP platform (OMAP1 and OMAP2). 7523b938be6SRussell King 7536288e28dSLeo Chenconfig ARCH_BCMRING 7546288e28dSLeo Chen bool "Broadcom BCMRING" 7556288e28dSLeo Chen depends on MMU 7566288e28dSLeo Chen select CPU_V6 7576288e28dSLeo Chen select ARM_AMBA 7586288e28dSLeo Chen select COMMON_CLKDEV 7596288e28dSLeo Chen select GENERIC_TIME 7606288e28dSLeo Chen select GENERIC_CLOCKEVENTS 7616288e28dSLeo Chen select ARCH_WANT_OPTIONAL_GPIOLIB 7626288e28dSLeo Chen help 7636288e28dSLeo Chen Support for Broadcom's BCMRing platform. 7646288e28dSLeo Chen 765850265e8SSrinidhi Kasagarconfig ARCH_U8500 766850265e8SSrinidhi Kasagar bool "ST-Ericsson U8500 Series" 767850265e8SSrinidhi Kasagar select CPU_V7 768850265e8SSrinidhi Kasagar select ARM_AMBA 769850265e8SSrinidhi Kasagar select GENERIC_TIME 770850265e8SSrinidhi Kasagar select GENERIC_CLOCKEVENTS 771850265e8SSrinidhi Kasagar select COMMON_CLKDEV 772850265e8SSrinidhi Kasagar help 773850265e8SSrinidhi Kasagar Support for ST-Ericsson's Ux500 architecture 774850265e8SSrinidhi Kasagar 7751da177e4SLinus Torvaldsendchoice 7761da177e4SLinus Torvalds 77795b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig" 77895b8f20fSRussell King 77995b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig" 78095b8f20fSRussell King 78195b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig" 78295b8f20fSRussell King 7831da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 7841da177e4SLinus Torvalds 78595b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig" 78695b8f20fSRussell King 78795b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig" 78895b8f20fSRussell King 789e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 790e7736d47SLennert Buytenhek 7911da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 7921da177e4SLinus Torvalds 79359d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 79459d3a193SPaulius Zaleckas 79595b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig" 79695b8f20fSRussell King 7971da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 7981da177e4SLinus Torvalds 7993f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 8003f7e5815SLennert Buytenhek 8013f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 8021da177e4SLinus Torvalds 803285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 804285f5fa7SDan Williams 8051da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 8061da177e4SLinus Torvalds 8071da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 8081da177e4SLinus Torvalds 809c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 810c4713074SLennert Buytenhek 81195b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig" 81295b8f20fSRussell King 81395b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig" 81495b8f20fSRussell King 81595b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig" 81695b8f20fSRussell King 817777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig" 818777f9bebSLennert Buytenhek 81995b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig" 82095b8f20fSRussell King 821794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 822794d15b2SStanislav Samsonov 82395b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig" 8241da177e4SLinus Torvalds 82595b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig" 82649cbe786SEric Miao 82795b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig" 82895b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig" 82995b8f20fSRussell King 83095b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig" 8311da177e4SLinus Torvalds 832d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 833d48af15eSTony Lindgren 834d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 8351da177e4SLinus Torvalds 8361dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 8371dbae815STony Lindgren 8389dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 839585cf175STzachi Perelstein 84095b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig" 84195b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig" 8421da177e4SLinus Torvalds 84395b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig" 84495b8f20fSRussell King 84595b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig" 84695b8f20fSRussell King 84795b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig" 848edabd38eSSaeed Bishara 849cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 850a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 851c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig" 8525a7652f2SByungho Minsource "arch/arm/plat-s5pc1xx/Kconfig" 853a21765a7SBen Dooks 854a21765a7SBen Dooksif ARCH_S3C2410 855a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig" 8561da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig" 857a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 858a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 859e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig" 860a21765a7SBen Dooksendif 8611da177e4SLinus Torvalds 862a08ab637SBen Dooksif ARCH_S3C64XX 863431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig" 864a08ab637SBen Dooksendif 865a08ab637SBen Dooks 866c4ffccddSKukjin Kimsource "arch/arm/mach-s5p6440/Kconfig" 867c4ffccddSKukjin Kim 868550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig" 8697bd0f2f5Sdmitry pervushin 8705a7652f2SByungho Minif ARCH_S5PC1XX 8715a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 8725a7652f2SByungho Minendif 8735a7652f2SByungho Min 874170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig" 875170f4e42SKukjin Kim 876*882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig" 8771da177e4SLinus Torvalds 878*882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig" 8799e73c84cSBrian Swetland 88095b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig" 88152c543f9SQuinn Jensen 88295b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig" 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 8851da177e4SLinus Torvalds 8867ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 8877ec80ddfSwanzongshun 8881da177e4SLinus Torvalds# Definitions to make life easier 8891da177e4SLinus Torvaldsconfig ARCH_ACORN 8901da177e4SLinus Torvalds bool 8911da177e4SLinus Torvalds 8927ae1f7ecSLennert Buytenhekconfig PLAT_IOP 8937ae1f7ecSLennert Buytenhek bool 894469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 895980f2296SMikael Pettersson select GENERIC_TIME 8967ae1f7ecSLennert Buytenhek 89769b02f6aSLennert Buytenhekconfig PLAT_ORION 89869b02f6aSLennert Buytenhek bool 89969b02f6aSLennert Buytenhek 900bd5ce433SEric Miaoconfig PLAT_PXA 901bd5ce433SEric Miao bool 902bd5ce433SEric Miao 9031da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 9041da177e4SLinus Torvalds 905afe4b25eSLennert Buytenhekconfig IWMMXT 906afe4b25eSLennert Buytenhek bool "Enable iWMMXt support" 90740305a58SEric Miao depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 90840305a58SEric Miao default y if PXA27x || PXA3xx || ARCH_MMP 909afe4b25eSLennert Buytenhek help 910afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 911afe4b25eSLennert Buytenhek running on a CPU that supports it. 912afe4b25eSLennert Buytenhek 9131da177e4SLinus Torvalds# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 9141da177e4SLinus Torvaldsconfig XSCALE_PMU 9151da177e4SLinus Torvalds bool 9161da177e4SLinus Torvalds depends on CPU_XSCALE && !XSCALE_PMU_TIMER 9171da177e4SLinus Torvalds default y 9181da177e4SLinus Torvalds 9193b93e7b0SHyok S. Choiif !MMU 9203b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 9213b93e7b0SHyok S. Choiendif 9223b93e7b0SHyok S. Choi 9239cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 9249cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 9259cba3cccSCatalin Marinas depends on CPU_V6 && !SMP 9269cba3cccSCatalin Marinas help 9279cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 9289cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 9299cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 9309cba3cccSCatalin Marinas recommended workaround. 9319cba3cccSCatalin Marinas 9327ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 9337ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 9347ce236fcSCatalin Marinas depends on CPU_V7 9357ce236fcSCatalin Marinas help 9367ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 9377ce236fcSCatalin Marinas (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 9387ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 9397ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 9407ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 9417ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 9427ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 9437ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 9447ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 9457ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 9467ce236fcSCatalin Marinas available in non-secure mode. 9477ce236fcSCatalin Marinas 948855c551fSCatalin Marinasconfig ARM_ERRATA_458693 949855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 950855c551fSCatalin Marinas depends on CPU_V7 951855c551fSCatalin Marinas help 952855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 953855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 954855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 955855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 956855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 957855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 958855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 959855c551fSCatalin Marinas register may not be available in non-secure mode. 960855c551fSCatalin Marinas 9610516e464SCatalin Marinasconfig ARM_ERRATA_460075 9620516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 9630516e464SCatalin Marinas depends on CPU_V7 9640516e464SCatalin Marinas help 9650516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 9660516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 9670516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 9680516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 9690516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 9700516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 9710516e464SCatalin Marinas may not be available in non-secure mode. 9720516e464SCatalin Marinas 9731da177e4SLinus Torvaldsendmenu 9741da177e4SLinus Torvalds 9751da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 9761da177e4SLinus Torvalds 9771da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER 9781da177e4SLinus Torvalds int 9791da177e4SLinus Torvalds depends on SA1111 9801da177e4SLinus Torvalds default "9" 9811da177e4SLinus Torvalds 9821da177e4SLinus Torvaldsmenu "Bus support" 9831da177e4SLinus Torvalds 9841da177e4SLinus Torvaldsconfig ARM_AMBA 9851da177e4SLinus Torvalds bool 9861da177e4SLinus Torvalds 9871da177e4SLinus Torvaldsconfig ISA 9881da177e4SLinus Torvalds bool 9891da177e4SLinus Torvalds help 9901da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 9911da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 9921da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 9931da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 9941da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 9951da177e4SLinus Torvalds 996065909b9SRussell King# Select ISA DMA controller support 9971da177e4SLinus Torvaldsconfig ISA_DMA 9981da177e4SLinus Torvalds bool 999065909b9SRussell King select ISA_DMA_API 10001da177e4SLinus Torvalds 1001065909b9SRussell King# Select ISA DMA interface 10025cae841bSAl Viroconfig ISA_DMA_API 10035cae841bSAl Viro bool 10045cae841bSAl Viro 10051da177e4SLinus Torvaldsconfig PCI 1006a0113a99SMike Rapoport bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE 10071da177e4SLinus Torvalds help 10081da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 10091da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 10101da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 10111da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 10121da177e4SLinus Torvalds 101336e23590SMatthew Wilcoxconfig PCI_SYSCALL 101436e23590SMatthew Wilcox def_bool PCI 101536e23590SMatthew Wilcox 10161da177e4SLinus Torvalds# Select the host bridge type 10171da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505 10181da177e4SLinus Torvalds bool 10191da177e4SLinus Torvalds depends on PCI && ARCH_SHARK 10201da177e4SLinus Torvalds default y 10211da177e4SLinus Torvalds 1022a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 1023a0113a99SMike Rapoport bool 1024a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 1025a0113a99SMike Rapoport default y 1026a0113a99SMike Rapoport select DMABOUNCE 1027a0113a99SMike Rapoport 10281da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 10311da177e4SLinus Torvalds 10321da177e4SLinus Torvaldsendmenu 10331da177e4SLinus Torvalds 10341da177e4SLinus Torvaldsmenu "Kernel Features" 10351da177e4SLinus Torvalds 10360567a0c0SKevin Hilmansource "kernel/time/Kconfig" 10370567a0c0SKevin Hilman 10381da177e4SLinus Torvaldsconfig SMP 10391da177e4SLinus Torvalds bool "Symmetric Multi-Processing (EXPERIMENTAL)" 104042578c82SRussell King depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1041850265e8SSrinidhi Kasagar MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 1042bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 1043f6dd9fa5SJens Axboe select USE_GENERIC_SMP_HELPERS 1044850265e8SSrinidhi Kasagar select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 10451da177e4SLinus Torvalds help 10461da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 10471da177e4SLinus Torvalds a system with only one CPU, like most personal computers, say N. If 10481da177e4SLinus Torvalds you have a system with more than one CPU, say Y. 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds If you say N here, the kernel will run on single and multiprocessor 10511da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 10521da177e4SLinus Torvalds you say Y here, the kernel will run on many, but not all, single 10531da177e4SLinus Torvalds processor machines. On a single processor machine, the kernel will 10541da177e4SLinus Torvalds run faster if you say N here. 10551da177e4SLinus Torvalds 105603502faaSAdrian Bunk See also <file:Documentation/i386/IO-APIC.txt>, 10571da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 10581da177e4SLinus Torvalds <http://www.linuxdoc.org/docs.html#howto>. 10591da177e4SLinus Torvalds 10601da177e4SLinus Torvalds If you don't know what to do here, say N. 10611da177e4SLinus Torvalds 1062a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1063a8cbcd92SRussell King bool 1064a8cbcd92SRussell King depends on SMP 1065a8cbcd92SRussell King help 1066a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1067a8cbcd92SRussell King 1068f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1069f32f4ce2SRussell King bool 1070f32f4ce2SRussell King depends on SMP 1071f32f4ce2SRussell King help 1072f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1073f32f4ce2SRussell King 10748d5796d2SLennert Buytenhekchoice 10758d5796d2SLennert Buytenhek prompt "Memory split" 10768d5796d2SLennert Buytenhek default VMSPLIT_3G 10778d5796d2SLennert Buytenhek help 10788d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 10798d5796d2SLennert Buytenhek 10808d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 10818d5796d2SLennert Buytenhek option alone! 10828d5796d2SLennert Buytenhek 10838d5796d2SLennert Buytenhek config VMSPLIT_3G 10848d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 10858d5796d2SLennert Buytenhek config VMSPLIT_2G 10868d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 10878d5796d2SLennert Buytenhek config VMSPLIT_1G 10888d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 10898d5796d2SLennert Buytenhekendchoice 10908d5796d2SLennert Buytenhek 10918d5796d2SLennert Buytenhekconfig PAGE_OFFSET 10928d5796d2SLennert Buytenhek hex 10938d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 10948d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 10958d5796d2SLennert Buytenhek default 0xC0000000 10968d5796d2SLennert Buytenhek 10971da177e4SLinus Torvaldsconfig NR_CPUS 10981da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 10991da177e4SLinus Torvalds range 2 32 11001da177e4SLinus Torvalds depends on SMP 11011da177e4SLinus Torvalds default "4" 11021da177e4SLinus Torvalds 1103a054a811SRussell Kingconfig HOTPLUG_CPU 1104a054a811SRussell King bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1105a054a811SRussell King depends on SMP && HOTPLUG && EXPERIMENTAL 1106a054a811SRussell King help 1107a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1108a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1109a054a811SRussell King 111037ee16aeSRussell Kingconfig LOCAL_TIMERS 111137ee16aeSRussell King bool "Use local timer interrupts" 111242578c82SRussell King depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1113850265e8SSrinidhi Kasagar REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 111437ee16aeSRussell King default y 1115850265e8SSrinidhi Kasagar select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 111637ee16aeSRussell King help 111737ee16aeSRussell King Enable support for local timers on SMP platforms, rather then the 111837ee16aeSRussell King legacy IPI broadcast method. Local timers allows the system 111937ee16aeSRussell King accounting to be spread across the timer interval, preventing a 112037ee16aeSRussell King "thundering herd" at every timer tick. 112137ee16aeSRussell King 1122d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 11231da177e4SLinus Torvalds 1124f8065813SRussell Kingconfig HZ 1125f8065813SRussell King int 1126f8065813SRussell King default 128 if ARCH_L7200 1127170f4e42SKukjin Kim default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210 1128bfe65704SRussell King default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 11295248c657SDavid Brownell default AT91_TIMER_HZ if ARCH_AT91 1130f8065813SRussell King default 100 1131f8065813SRussell King 113216c79651SCatalin Marinasconfig THUMB2_KERNEL 113316c79651SCatalin Marinas bool "Compile the kernel in Thumb-2 mode" 113416c79651SCatalin Marinas depends on CPU_V7 && EXPERIMENTAL 113516c79651SCatalin Marinas select AEABI 113616c79651SCatalin Marinas select ARM_ASM_UNIFIED 113716c79651SCatalin Marinas help 113816c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 113916c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 114016c79651SCatalin Marinas ARM-Thumb syntax is needed. 114116c79651SCatalin Marinas 114216c79651SCatalin Marinas If unsure, say N. 114316c79651SCatalin Marinas 11440becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 11450becb088SCatalin Marinas bool 11460becb088SCatalin Marinas 1147704bdda0SNicolas Pitreconfig AEABI 1148704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1149704bdda0SNicolas Pitre help 1150704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1151704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1152704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1153704bdda0SNicolas Pitre 1154704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1155704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1156704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1157704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1158704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1159704bdda0SNicolas Pitre 1160704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1161704bdda0SNicolas Pitre 11626c90c872SNicolas Pitreconfig OABI_COMPAT 1163a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 116461c484d4SNicolas Pitre depends on AEABI && EXPERIMENTAL 11656c90c872SNicolas Pitre default y 11666c90c872SNicolas Pitre help 11676c90c872SNicolas Pitre This option preserves the old syscall interface along with the 11686c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 11696c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 11706c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 11716c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 11726c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 11736c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 11746c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 11756c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 11766c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 11776c90c872SNicolas Pitre at all). If in doubt say Y. 11786c90c872SNicolas Pitre 1179eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1180e80d6a24SMel Gorman bool 1181e80d6a24SMel Gorman 118207a2f737SRussell King# Discontigmem is deprecated 11833f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE 11841da177e4SLinus Torvalds bool 11851da177e4SLinus Torvalds 118605944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 118705944d74SRussell King bool 118805944d74SRussell King 118907a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 119007a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 119107a2f737SRussell King 119205944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 119307a2f737SRussell King def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE 119405944d74SRussell King 1195c80d79d7SYasunori Gotoconfig NODES_SHIFT 1196c80d79d7SYasunori Goto int 1197c80d79d7SYasunori Goto default "4" if ARCH_LH7A40X 1198c80d79d7SYasunori Goto default "2" 1199c80d79d7SYasunori Goto depends on NEED_MULTIPLE_NODES 1200c80d79d7SYasunori Goto 1201053a96caSNicolas Pitreconfig HIGHMEM 1202053a96caSNicolas Pitre bool "High Memory Support (EXPERIMENTAL)" 1203053a96caSNicolas Pitre depends on MMU && EXPERIMENTAL 1204053a96caSNicolas Pitre help 1205053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1206053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1207053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1208053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1209053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1210053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1211053a96caSNicolas Pitre 1212053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1213053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1214053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1215053a96caSNicolas Pitre 1216053a96caSNicolas Pitre If unsure, say n. 1217053a96caSNicolas Pitre 121865cec8e3SRussell Kingconfig HIGHPTE 121965cec8e3SRussell King bool "Allocate 2nd-level pagetables from highmem" 122065cec8e3SRussell King depends on HIGHMEM 122165cec8e3SRussell King depends on !OUTER_CACHE 122265cec8e3SRussell King 12233f22ab27SDave Hansensource "mm/Kconfig" 12243f22ab27SDave Hansen 12251da177e4SLinus Torvaldsconfig LEDS 12261da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1227e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 12288c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 12291da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 12301da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 123173a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 123225329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1233ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 12341da177e4SLinus Torvalds help 12351da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 12361da177e4SLinus Torvalds to provide useful information about your current system status. 12371da177e4SLinus Torvalds 12381da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 12391da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 12401da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 12411da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 12421da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 12431da177e4SLinus Torvalds system, but the driver will do nothing. 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvaldsconfig LEDS_TIMER 12461da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1247eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1248eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12491da177e4SLinus Torvalds depends on LEDS 12500567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 12511da177e4SLinus Torvalds default y if ARCH_EBSA110 12521da177e4SLinus Torvalds help 12531da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 12541da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 12551da177e4SLinus Torvalds will flash regularly to indicate that the system is still 12561da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 12571da177e4SLinus Torvalds debugging unstable kernels. 12581da177e4SLinus Torvalds 12591da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12601da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12611da177e4SLinus Torvalds will overrule the CPU usage LED. 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvaldsconfig LEDS_CPU 12641da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1265eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1266eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1267eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12681da177e4SLinus Torvalds depends on LEDS 12691da177e4SLinus Torvalds help 12701da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 12711da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 12721da177e4SLinus Torvalds is not currently executing. 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12751da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12761da177e4SLinus Torvalds will overrule the CPU usage LED. 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 12791da177e4SLinus Torvalds bool 1280f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 12811da177e4SLinus Torvalds default y if !ARCH_EBSA110 12821da177e4SLinus Torvalds help 12831da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 12841da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 12851da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 12861da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 12871da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 12881da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 12891da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 12901da177e4SLinus Torvalds 129139ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 129239ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 129339ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 129439ec58f3SLennert Buytenhek default y if CPU_FEROCEON 129539ec58f3SLennert Buytenhek help 129639ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 129739ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 129839ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 129939ec58f3SLennert Buytenhek 130039ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 130139ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 130239ec58f3SLennert Buytenhek such copy operations with large buffers. 130339ec58f3SLennert Buytenhek 130439ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 130539ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 130639ec58f3SLennert Buytenhek 13071da177e4SLinus Torvaldsendmenu 13081da177e4SLinus Torvalds 13091da177e4SLinus Torvaldsmenu "Boot options" 13101da177e4SLinus Torvalds 13111da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 13121da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 13131da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 13141da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 13151da177e4SLinus Torvalds default "0" 13161da177e4SLinus Torvalds help 13171da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 13181da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 13191da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 13201da177e4SLinus Torvalds value in their defconfig file. 13211da177e4SLinus Torvalds 13221da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 13231da177e4SLinus Torvalds 13241da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 13251da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 13261da177e4SLinus Torvalds default "0" 13271da177e4SLinus Torvalds help 1328f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1329f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1330f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1331f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1332f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1333f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 13341da177e4SLinus Torvalds 13351da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 13361da177e4SLinus Torvalds 13371da177e4SLinus Torvaldsconfig ZBOOT_ROM 13381da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 13391da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 13401da177e4SLinus Torvalds help 13411da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 13421da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 13431da177e4SLinus Torvalds 13441da177e4SLinus Torvaldsconfig CMDLINE 13451da177e4SLinus Torvalds string "Default kernel command string" 13461da177e4SLinus Torvalds default "" 13471da177e4SLinus Torvalds help 13481da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 13491da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 13501da177e4SLinus Torvalds architectures, you should supply some command-line options at build 13511da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 13521da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 13531da177e4SLinus Torvalds 13541da177e4SLinus Torvaldsconfig XIP_KERNEL 13551da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 13561da177e4SLinus Torvalds depends on !ZBOOT_ROM 13571da177e4SLinus Torvalds help 13581da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 13591da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 13601da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 13611da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 13621da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 13631da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 13641da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 13651da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 13661da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 13671da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 13681da177e4SLinus Torvalds 13691da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 13701da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 13711da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 13721da177e4SLinus Torvalds 13731da177e4SLinus Torvalds If unsure, say N. 13741da177e4SLinus Torvalds 13751da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 13761da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 13771da177e4SLinus Torvalds depends on XIP_KERNEL 13781da177e4SLinus Torvalds default "0x00080000" 13791da177e4SLinus Torvalds help 13801da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 13811da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 13821da177e4SLinus Torvalds own flash usage. 13831da177e4SLinus Torvalds 1384c587e4a6SRichard Purdieconfig KEXEC 1385c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 1386c587e4a6SRichard Purdie depends on EXPERIMENTAL 1387c587e4a6SRichard Purdie help 1388c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1389c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 139001dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1391c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1392c587e4a6SRichard Purdie 1393c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1394c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1395c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 1396c587e4a6SRichard Purdie support. 1397c587e4a6SRichard Purdie 13984cd9d6f7SRichard Purdieconfig ATAGS_PROC 13994cd9d6f7SRichard Purdie bool "Export atags in procfs" 1400b98d7291SUli Luckas depends on KEXEC 1401b98d7291SUli Luckas default y 14024cd9d6f7SRichard Purdie help 14034cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 14044cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 14054cd9d6f7SRichard Purdie 14061da177e4SLinus Torvaldsendmenu 14071da177e4SLinus Torvalds 1408ac9d7efcSRussell Kingmenu "CPU Power Management" 14091da177e4SLinus Torvalds 141089c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 14111da177e4SLinus Torvalds 14121da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 14131da177e4SLinus Torvalds 14141da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 14151da177e4SLinus Torvalds bool 14161da177e4SLinus Torvalds 14171da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 14181da177e4SLinus Torvalds bool 14191da177e4SLinus Torvalds 14201da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 14211da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 14221da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 14231da177e4SLinus Torvalds default y 14241da177e4SLinus Torvalds help 14251da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 14261da177e4SLinus Torvalds 14271da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 14281da177e4SLinus Torvalds 14291da177e4SLinus Torvalds If in doubt, say Y. 14301da177e4SLinus Torvalds 14319e2697ffSRussell Kingconfig CPU_FREQ_PXA 14329e2697ffSRussell King bool 14339e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 14349e2697ffSRussell King default y 14359e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 14369e2697ffSRussell King 1437b3748dddSMark Brownconfig CPU_FREQ_S3C64XX 1438b3748dddSMark Brown bool "CPUfreq support for Samsung S3C64XX CPUs" 1439b3748dddSMark Brown depends on CPU_FREQ && CPU_S3C6410 1440b3748dddSMark Brown 14419d56c02aSBen Dooksconfig CPU_FREQ_S3C 14429d56c02aSBen Dooks bool 14439d56c02aSBen Dooks help 14449d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 14459d56c02aSBen Dooks 14469d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 14479d56c02aSBen Dooks bool "CPUfreq driver for Samsung S3C24XX series CPUs" 14489d56c02aSBen Dooks depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 14499d56c02aSBen Dooks select CPU_FREQ_S3C 14509d56c02aSBen Dooks help 14519d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 14529d56c02aSBen Dooks of CPUs. 14539d56c02aSBen Dooks 14549d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 14559d56c02aSBen Dooks 14569d56c02aSBen Dooks If in doubt, say N. 14579d56c02aSBen Dooks 14589d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 14599d56c02aSBen Dooks bool "Support CPUfreq changing of PLL frequency" 14609d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 14619d56c02aSBen Dooks help 14629d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 14639d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 14649d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 14659d56c02aSBen Dooks 14669d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 14679d56c02aSBen Dooks be built which may increase the size of the kernel image. 14689d56c02aSBen Dooks 14699d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 14709d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 14719d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14729d56c02aSBen Dooks help 14739d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 14749d56c02aSBen Dooks 14759d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 14769d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 14779d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14789d56c02aSBen Dooks help 14799d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 14809d56c02aSBen Dooks 1481e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 1482e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 1483e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 1484e6d197a6SBen Dooks help 1485e6d197a6SBen Dooks Export status information via debugfs. 1486e6d197a6SBen Dooks 14871da177e4SLinus Torvaldsendif 14881da177e4SLinus Torvalds 1489ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 1490ac9d7efcSRussell King 1491ac9d7efcSRussell Kingendmenu 1492ac9d7efcSRussell King 14931da177e4SLinus Torvaldsmenu "Floating point emulation" 14941da177e4SLinus Torvalds 14951da177e4SLinus Torvaldscomment "At least one emulation must be selected" 14961da177e4SLinus Torvalds 14971da177e4SLinus Torvaldsconfig FPE_NWFPE 14981da177e4SLinus Torvalds bool "NWFPE math emulation" 14998993a44cSNicolas Pitre depends on !AEABI || OABI_COMPAT 15001da177e4SLinus Torvalds ---help--- 15011da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 15021da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 15031da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 15041da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 15051da177e4SLinus Torvalds 15061da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 15071da177e4SLinus Torvalds early in the bootup. 15081da177e4SLinus Torvalds 15091da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 15101da177e4SLinus Torvalds bool "Support extended precision" 1511bedf142bSLennert Buytenhek depends on FPE_NWFPE 15121da177e4SLinus Torvalds help 15131da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 15141da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 15151da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 15161da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 15171da177e4SLinus Torvalds floating point emulator without any good reason. 15181da177e4SLinus Torvalds 15191da177e4SLinus Torvalds You almost surely want to say N here. 15201da177e4SLinus Torvalds 15211da177e4SLinus Torvaldsconfig FPE_FASTFPE 15221da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 15238993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 15241da177e4SLinus Torvalds ---help--- 15251da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 15261da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 15271da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 15281da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 15291da177e4SLinus Torvalds 15301da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 15311da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 15321da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 15331da177e4SLinus Torvalds choose NWFPE. 15341da177e4SLinus Torvalds 15351da177e4SLinus Torvaldsconfig VFP 15361da177e4SLinus Torvalds bool "VFP-format floating point maths" 1537c00d4ffdSRussell King depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 15381da177e4SLinus Torvalds help 15391da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 15401da177e4SLinus Torvalds if your hardware includes a VFP unit. 15411da177e4SLinus Torvalds 15421da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 15431da177e4SLinus Torvalds release notes and additional status information. 15441da177e4SLinus Torvalds 15451da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 15461da177e4SLinus Torvalds 154725ebee02SCatalin Marinasconfig VFPv3 154825ebee02SCatalin Marinas bool 154925ebee02SCatalin Marinas depends on VFP 155025ebee02SCatalin Marinas default y if CPU_V7 155125ebee02SCatalin Marinas 1552b5872db4SCatalin Marinasconfig NEON 1553b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 1554b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 1555b5872db4SCatalin Marinas help 1556b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1557b5872db4SCatalin Marinas Extension. 1558b5872db4SCatalin Marinas 15591da177e4SLinus Torvaldsendmenu 15601da177e4SLinus Torvalds 15611da177e4SLinus Torvaldsmenu "Userspace binary formats" 15621da177e4SLinus Torvalds 15631da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 15641da177e4SLinus Torvalds 15651da177e4SLinus Torvaldsconfig ARTHUR 15661da177e4SLinus Torvalds tristate "RISC OS personality" 1567704bdda0SNicolas Pitre depends on !AEABI 15681da177e4SLinus Torvalds help 15691da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 15701da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 15711da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 15721da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 15731da177e4SLinus Torvalds will be called arthur). 15741da177e4SLinus Torvalds 15751da177e4SLinus Torvaldsendmenu 15761da177e4SLinus Torvalds 15771da177e4SLinus Torvaldsmenu "Power management options" 15781da177e4SLinus Torvalds 1579eceab4acSRussell Kingsource "kernel/power/Kconfig" 15801da177e4SLinus Torvalds 1581f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 1582f4cb5700SJohannes Berg def_bool y 1583f4cb5700SJohannes Berg 15841da177e4SLinus Torvaldsendmenu 15851da177e4SLinus Torvalds 1586d5950b43SSam Ravnborgsource "net/Kconfig" 1587d5950b43SSam Ravnborg 1588ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 15891da177e4SLinus Torvalds 15901da177e4SLinus Torvaldssource "fs/Kconfig" 15911da177e4SLinus Torvalds 15921da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 15931da177e4SLinus Torvalds 15941da177e4SLinus Torvaldssource "security/Kconfig" 15951da177e4SLinus Torvalds 15961da177e4SLinus Torvaldssource "crypto/Kconfig" 15971da177e4SLinus Torvalds 15981da177e4SLinus Torvaldssource "lib/Kconfig" 1599