11da177e4SLinus Torvalds# 21da177e4SLinus Torvalds# For a description of the syntax of this configuration file, 31da177e4SLinus Torvalds# see Documentation/kbuild/kconfig-language.txt. 41da177e4SLinus Torvalds# 51da177e4SLinus Torvalds 61da177e4SLinus Torvaldsmainmenu "Linux Kernel Configuration" 71da177e4SLinus Torvalds 81da177e4SLinus Torvaldsconfig ARM 91da177e4SLinus Torvalds bool 101da177e4SLinus Torvalds default y 11e17c6d56SDavid Woodhouse select HAVE_AOUT 122064c946SAdrian Bunk select HAVE_IDE 1312b824fbSAlessandro Zummo select RTC_LIB 1475e7153aSRalf Baechle select SYS_SUPPORTS_APM_EMULATION 1524b44a66SWill Deacon select GENERIC_ATOMIC64 if (!CPU_32v6K) 1642d4b839SMathieu Desnoyers select HAVE_OPROFILE 175cbad0ebSJason Wessel select HAVE_ARCH_KGDB 183f550096SMathieu Desnoyers select HAVE_KPROBES if (!XIP_KERNEL) 199edddaa2SAnanth N Mavinakayanahalli select HAVE_KRETPROBES if (HAVE_KPROBES) 20606576ceSSteven Rostedt select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 211fe53268SDmitry Baryshkov select HAVE_GENERIC_DMA_COHERENT 22e7db7b42SAlbin Tonnerre select HAVE_KERNEL_GZIP 23e7db7b42SAlbin Tonnerre select HAVE_KERNEL_LZO 247ada189fSJamie Iles select HAVE_PERF_EVENTS 257ada189fSJamie Iles select PERF_USE_VMALLOC 261da177e4SLinus Torvalds help 271da177e4SLinus Torvalds The ARM series is a line of low-power-consumption RISC chip designs 28f6c8965aSMartin Michlmayr licensed by ARM Ltd and targeted at embedded applications and 291da177e4SLinus Torvalds handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 301da177e4SLinus Torvalds manufactured, but legacy ARM-based PC hardware remains popular in 311da177e4SLinus Torvalds Europe. There is an ARM Linux project with a web page at 321da177e4SLinus Torvalds <http://www.arm.linux.org.uk/>. 331da177e4SLinus Torvalds 341a189b97SRussell Kingconfig HAVE_PWM 351a189b97SRussell King bool 361a189b97SRussell King 3775e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION 3875e7153aSRalf Baechle bool 3975e7153aSRalf Baechle 400a938b97SDavid Brownellconfig GENERIC_GPIO 410a938b97SDavid Brownell bool 420a938b97SDavid Brownell 43746140c7SKevin Hilmanconfig GENERIC_TIME 44746140c7SKevin Hilman bool 45746140c7SKevin Hilman 460567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS 470567a0c0SKevin Hilman bool 480567a0c0SKevin Hilman 49a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST 50a8655e83SCatalin Marinas bool 51a8655e83SCatalin Marinas depends on GENERIC_CLOCKEVENTS 52a8655e83SCatalin Marinas default y if SMP && !LOCAL_TIMERS 53a8655e83SCatalin Marinas 54bc581770SLinus Walleijconfig HAVE_TCM 55bc581770SLinus Walleij bool 56bc581770SLinus Walleij select GENERIC_ALLOCATOR 57bc581770SLinus Walleij 58e119bfffSRussell Kingconfig HAVE_PROC_CPU 59e119bfffSRussell King bool 60e119bfffSRussell King 615ea81769SAl Viroconfig NO_IOPORT 625ea81769SAl Viro bool 635ea81769SAl Viro 641da177e4SLinus Torvaldsconfig EISA 651da177e4SLinus Torvalds bool 661da177e4SLinus Torvalds ---help--- 671da177e4SLinus Torvalds The Extended Industry Standard Architecture (EISA) bus was 681da177e4SLinus Torvalds developed as an open alternative to the IBM MicroChannel bus. 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds The EISA bus provided some of the features of the IBM MicroChannel 711da177e4SLinus Torvalds bus while maintaining backward compatibility with cards made for 721da177e4SLinus Torvalds the older ISA bus. The EISA bus saw limited use between 1988 and 731da177e4SLinus Torvalds 1995 when it was made obsolete by the PCI bus. 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds Say Y here if you are building a kernel for an EISA-based machine. 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds Otherwise, say N. 781da177e4SLinus Torvalds 791da177e4SLinus Torvaldsconfig SBUS 801da177e4SLinus Torvalds bool 811da177e4SLinus Torvalds 821da177e4SLinus Torvaldsconfig MCA 831da177e4SLinus Torvalds bool 841da177e4SLinus Torvalds help 851da177e4SLinus Torvalds MicroChannel Architecture is found in some IBM PS/2 machines and 861da177e4SLinus Torvalds laptops. It is a bus system similar to PCI or ISA. See 871da177e4SLinus Torvalds <file:Documentation/mca.txt> (and especially the web page given 881da177e4SLinus Torvalds there) before attempting to build an MCA bus kernel. 891da177e4SLinus Torvalds 904a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS 914a2581a0SThomas Gleixner bool 924a2581a0SThomas Gleixner default y 934a2581a0SThomas Gleixner 94f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT 95f16fb1ecSRussell King bool 96f16fb1ecSRussell King default y 97f16fb1ecSRussell King 98f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT 99f76e9154SNicolas Pitre bool 100f76e9154SNicolas Pitre depends on !SMP 101f76e9154SNicolas Pitre default y 102f76e9154SNicolas Pitre 103f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT 104f16fb1ecSRussell King bool 105f16fb1ecSRussell King default y 106f16fb1ecSRussell King 1077ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT 1087ad1bcb2SRussell King bool 1097ad1bcb2SRussell King default y 1107ad1bcb2SRussell King 1114a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND 1124a2581a0SThomas Gleixner bool 1134a2581a0SThomas Gleixner default y 1144a2581a0SThomas Gleixner 1154a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE 1164a2581a0SThomas Gleixner bool 1174a2581a0SThomas Gleixner default y 1184a2581a0SThomas Gleixner 11995c354feSNick Pigginconfig GENERIC_LOCKBREAK 12095c354feSNick Piggin bool 12195c354feSNick Piggin default y 12295c354feSNick Piggin depends on SMP && PREEMPT 12395c354feSNick Piggin 1241da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK 1251da177e4SLinus Torvalds bool 1261da177e4SLinus Torvalds default y 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM 1291da177e4SLinus Torvalds bool 1301da177e4SLinus Torvalds 131f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 132f0d1b0b3SDavid Howells bool 133f0d1b0b3SDavid Howells 134f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 135f0d1b0b3SDavid Howells bool 136f0d1b0b3SDavid Howells 13789c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ 13889c52ed4SBen Dooks bool 13989c52ed4SBen Dooks help 14089c52ed4SBen Dooks Internal node to signify that the ARCH has CPUFREQ support 14189c52ed4SBen Dooks and that the relevant menu configurations are displayed for 14289c52ed4SBen Dooks it. 14389c52ed4SBen Dooks 144b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT 145b89c3b16SAkinobu Mita bool 146b89c3b16SAkinobu Mita default y 147b89c3b16SAkinobu Mita 1481da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY 1491da177e4SLinus Torvalds bool 1501da177e4SLinus Torvalds default y 1511da177e4SLinus Torvalds 152a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC 153a08b6b79Sviro@ZenIV.linux.org.uk bool 154a08b6b79Sviro@ZenIV.linux.org.uk 1555ac6da66SChristoph Lameterconfig ZONE_DMA 1565ac6da66SChristoph Lameter bool 1575ac6da66SChristoph Lameter 158*ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE 159*ccd7ab7fSFUJITA Tomonori def_bool y 160*ccd7ab7fSFUJITA Tomonori 1611da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA 1621da177e4SLinus Torvalds bool 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvaldsconfig FIQ 1651da177e4SLinus Torvalds bool 1661da177e4SLinus Torvalds 167034d2f5aSAl Viroconfig ARCH_MTD_XIP 168034d2f5aSAl Viro bool 169034d2f5aSAl Viro 17060a752efSPaulius Zaleckasconfig GENERIC_HARDIRQS_NO__DO_IRQ 17160a752efSPaulius Zaleckas def_bool y 17260a752efSPaulius Zaleckas 173d6d502faSKukjin Kimconfig ARM_L1_CACHE_SHIFT_6 174d6d502faSKukjin Kim bool 175d6d502faSKukjin Kim help 176d6d502faSKukjin Kim Setting ARM L1 cache line size to 64 Bytes. 177d6d502faSKukjin Kim 178c0ffa3a9SMathieu Desnoyersif OPROFILE 179c0ffa3a9SMathieu Desnoyers 180c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARMV6 181c0ffa3a9SMathieu Desnoyers def_bool y 182c0ffa3a9SMathieu Desnoyers depends on CPU_V6 && !SMP 183c0ffa3a9SMathieu Desnoyers select OPROFILE_ARM11_CORE 184c0ffa3a9SMathieu Desnoyers 185c0ffa3a9SMathieu Desnoyersconfig OPROFILE_MPCORE 186c0ffa3a9SMathieu Desnoyers def_bool y 187c0ffa3a9SMathieu Desnoyers depends on CPU_V6 && SMP 188c0ffa3a9SMathieu Desnoyers select OPROFILE_ARM11_CORE 189c0ffa3a9SMathieu Desnoyers 190c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARM11_CORE 191c0ffa3a9SMathieu Desnoyers bool 192c0ffa3a9SMathieu Desnoyers 193d7ac4e28SJean PIHETconfig OPROFILE_ARMV7 194d7ac4e28SJean PIHET def_bool y 195d7ac4e28SJean PIHET depends on CPU_V7 && !SMP 196d7ac4e28SJean PIHET bool 197d7ac4e28SJean PIHET 198c0ffa3a9SMathieu Desnoyersendif 199c0ffa3a9SMathieu Desnoyers 200c760fc19SHyok S. Choiconfig VECTORS_BASE 201c760fc19SHyok S. Choi hex 2026afd6faeSHyok S. Choi default 0xffff0000 if MMU || CPU_HIGH_VECTOR 203c760fc19SHyok S. Choi default DRAM_BASE if REMAP_VECTORS_TO_RAM 204c760fc19SHyok S. Choi default 0x00000000 205c760fc19SHyok S. Choi help 206c760fc19SHyok S. Choi The base address of exception vectors. 207c760fc19SHyok S. Choi 2081da177e4SLinus Torvaldssource "init/Kconfig" 2091da177e4SLinus Torvalds 210dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 211dc52ddc0SMatt Helsley 2121da177e4SLinus Torvaldsmenu "System Type" 2131da177e4SLinus Torvalds 2143c427975SHyok S. Choiconfig MMU 2153c427975SHyok S. Choi bool "MMU-based Paged Memory Management Support" 2163c427975SHyok S. Choi default y 2173c427975SHyok S. Choi help 2183c427975SHyok S. Choi Select if you want MMU-based virtualised addressing space 2193c427975SHyok S. Choi support by paged memory management. If unsure, say 'Y'. 2203c427975SHyok S. Choi 2211da177e4SLinus Torvaldschoice 2221da177e4SLinus Torvalds prompt "ARM system type" 2236a0e2430SCatalin Marinas default ARCH_VERSATILE 2241da177e4SLinus Torvalds 2254af6fee1SDeepak Saxenaconfig ARCH_AAEC2000 2264af6fee1SDeepak Saxena bool "Agilent AAEC-2000 based" 227c750815eSRussell King select CPU_ARM920T 2284af6fee1SDeepak Saxena select ARM_AMBA 2299483a578SDavid Brownell select HAVE_CLK 2304af6fee1SDeepak Saxena help 2314af6fee1SDeepak Saxena This enables support for systems based on the Agilent AAEC-2000 2324af6fee1SDeepak Saxena 2334af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR 2344af6fee1SDeepak Saxena bool "ARM Ltd. Integrator family" 2354af6fee1SDeepak Saxena select ARM_AMBA 23689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 2379483a578SDavid Brownell select HAVE_CLK 238d72fbdf0SRussell King select COMMON_CLKDEV 2394af6fee1SDeepak Saxena select ICST525 2404af6fee1SDeepak Saxena help 2414af6fee1SDeepak Saxena Support for ARM's Integrator platform. 2424af6fee1SDeepak Saxena 2434af6fee1SDeepak Saxenaconfig ARCH_REALVIEW 2444af6fee1SDeepak Saxena bool "ARM Ltd. RealView family" 2454af6fee1SDeepak Saxena select ARM_AMBA 2469483a578SDavid Brownell select HAVE_CLK 247cf30fb4aSRussell King select COMMON_CLKDEV 2484af6fee1SDeepak Saxena select ICST307 24985802afeSCatalin Marinas select GENERIC_TIME 250ae30ceacSCatalin Marinas select GENERIC_CLOCKEVENTS 251eb7fffa3SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 2524af6fee1SDeepak Saxena help 2534af6fee1SDeepak Saxena This enables support for ARM Ltd RealView boards. 2544af6fee1SDeepak Saxena 2554af6fee1SDeepak Saxenaconfig ARCH_VERSATILE 2564af6fee1SDeepak Saxena bool "ARM Ltd. Versatile family" 2574af6fee1SDeepak Saxena select ARM_AMBA 2584af6fee1SDeepak Saxena select ARM_VIC 2599483a578SDavid Brownell select HAVE_CLK 26071a06da0SRussell King select COMMON_CLKDEV 2614af6fee1SDeepak Saxena select ICST307 262b49c87c2SKevin Hilman select GENERIC_TIME 26389df1272SKevin Hilman select GENERIC_CLOCKEVENTS 264bbeddc43SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 2654af6fee1SDeepak Saxena help 2664af6fee1SDeepak Saxena This enables support for ARM Ltd Versatile board. 2674af6fee1SDeepak Saxena 2688fc5ffa0SAndrew Victorconfig ARCH_AT91 2698fc5ffa0SAndrew Victor bool "Atmel AT91" 2700a938b97SDavid Brownell select GENERIC_GPIO 271f373e8c0SRyan Mallon select ARCH_REQUIRE_GPIOLIB 27293686ae8SDavid Brownell select HAVE_CLK 2734af6fee1SDeepak Saxena help 2742b3b3516SAndrew Victor This enables support for systems based on the Atmel AT91RM9200, 2752b3b3516SAndrew Victor AT91SAM9 and AT91CAP9 processors. 2764af6fee1SDeepak Saxena 2771da177e4SLinus Torvaldsconfig ARCH_CLPS711X 2784af6fee1SDeepak Saxena bool "Cirrus Logic CLPS711x/EP721x-based" 279c750815eSRussell King select CPU_ARM720T 280f999b8bdSMartin Michlmayr help 281f999b8bdSMartin Michlmayr Support for Cirrus Logic 711x/721x based boards. 2821da177e4SLinus Torvalds 283788c9700SRussell Kingconfig ARCH_GEMINI 284788c9700SRussell King bool "Cortina Systems Gemini" 285788c9700SRussell King select CPU_FA526 286788c9700SRussell King select GENERIC_GPIO 287788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 288788c9700SRussell King help 289788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 290788c9700SRussell King 2911da177e4SLinus Torvaldsconfig ARCH_EBSA110 2921da177e4SLinus Torvalds bool "EBSA-110" 293c750815eSRussell King select CPU_SA110 294f7e68bbfSRussell King select ISA 295c5eb2a2bSRussell King select NO_IOPORT 2961da177e4SLinus Torvalds help 2971da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 298f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 2991da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 3001da177e4SLinus Torvalds parallel port. 3011da177e4SLinus Torvalds 302e7736d47SLennert Buytenhekconfig ARCH_EP93XX 303e7736d47SLennert Buytenhek bool "EP93xx-based" 304c750815eSRussell King select CPU_ARM920T 305e7736d47SLennert Buytenhek select ARM_AMBA 306e7736d47SLennert Buytenhek select ARM_VIC 3074e9f9fd5SHerbert Valerio Riedel select GENERIC_GPIO 3089483a578SDavid Brownell select HAVE_CLK 309ae696fd5SRussell King select COMMON_CLKDEV 3107444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 311eb33575cSMel Gorman select ARCH_HAS_HOLES_MEMORYMODEL 312e7736d47SLennert Buytenhek help 313e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 314e7736d47SLennert Buytenhek 3151da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 3161da177e4SLinus Torvalds bool "FootBridge" 317c750815eSRussell King select CPU_SA110 3181da177e4SLinus Torvalds select FOOTBRIDGE 319f999b8bdSMartin Michlmayr help 320f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 321f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 3221da177e4SLinus Torvalds 323788c9700SRussell Kingconfig ARCH_MXC 324788c9700SRussell King bool "Freescale MXC/iMX-based" 325788c9700SRussell King select GENERIC_TIME 326788c9700SRussell King select GENERIC_CLOCKEVENTS 327788c9700SRussell King select ARCH_MTD_XIP 328788c9700SRussell King select GENERIC_GPIO 329788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 330a2ab67faSRussell King select HAVE_CLK 331788c9700SRussell King help 332788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 333788c9700SRussell King 3347bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX 3357bd0f2f5Sdmitry pervushin bool "Freescale STMP3xxx" 3367bd0f2f5Sdmitry pervushin select CPU_ARM926T 3377bd0f2f5Sdmitry pervushin select HAVE_CLK 3387bd0f2f5Sdmitry pervushin select COMMON_CLKDEV 3397bd0f2f5Sdmitry pervushin select ARCH_REQUIRE_GPIOLIB 3407bd0f2f5Sdmitry pervushin select GENERIC_TIME 3417bd0f2f5Sdmitry pervushin select GENERIC_CLOCKEVENTS 3427bd0f2f5Sdmitry pervushin select GENERIC_GPIO 3437bd0f2f5Sdmitry pervushin select USB_ARCH_HAS_EHCI 3447bd0f2f5Sdmitry pervushin help 3457bd0f2f5Sdmitry pervushin Support for systems based on the Freescale 3xxx CPUs. 3467bd0f2f5Sdmitry pervushin 3474af6fee1SDeepak Saxenaconfig ARCH_NETX 3484af6fee1SDeepak Saxena bool "Hilscher NetX based" 349c750815eSRussell King select CPU_ARM926T 3504af6fee1SDeepak Saxena select ARM_VIC 3512fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 35221edecd3SUwe Kleine-König select GENERIC_TIME 353f999b8bdSMartin Michlmayr help 3544af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 3554af6fee1SDeepak Saxena 3564af6fee1SDeepak Saxenaconfig ARCH_H720X 3574af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 358c750815eSRussell King select CPU_ARM720T 3594af6fee1SDeepak Saxena select ISA_DMA_API 3604af6fee1SDeepak Saxena help 3614af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 3624af6fee1SDeepak Saxena 36328ad94ecSAlessandro Rubiniconfig ARCH_NOMADIK 36428ad94ecSAlessandro Rubini bool "STMicroelectronics Nomadik" 36528ad94ecSAlessandro Rubini select ARM_AMBA 36628ad94ecSAlessandro Rubini select ARM_VIC 36728ad94ecSAlessandro Rubini select CPU_ARM926T 36828ad94ecSAlessandro Rubini select HAVE_CLK 36928ad94ecSAlessandro Rubini select COMMON_CLKDEV 37028ad94ecSAlessandro Rubini select GENERIC_TIME 37128ad94ecSAlessandro Rubini select GENERIC_CLOCKEVENTS 3722ec1d359SAlessandro Rubini select GENERIC_GPIO 3732ec1d359SAlessandro Rubini select ARCH_REQUIRE_GPIOLIB 37428ad94ecSAlessandro Rubini help 37528ad94ecSAlessandro Rubini Support for the Nomadik platform by ST-Ericsson 37628ad94ecSAlessandro Rubini 3773b938be6SRussell Kingconfig ARCH_IOP13XX 3783b938be6SRussell King bool "IOP13xx-based" 3793b938be6SRussell King depends on MMU 380c750815eSRussell King select CPU_XSC3 3813b938be6SRussell King select PLAT_IOP 3823b938be6SRussell King select PCI 3833b938be6SRussell King select ARCH_SUPPORTS_MSI 3848d5796d2SLennert Buytenhek select VMSPLIT_1G 3853b938be6SRussell King help 3863b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 3873b938be6SRussell King 3883f7e5815SLennert Buytenhekconfig ARCH_IOP32X 3893f7e5815SLennert Buytenhek bool "IOP32x-based" 390a4f7e763SRussell King depends on MMU 391c750815eSRussell King select CPU_XSCALE 3927ae1f7ecSLennert Buytenhek select PLAT_IOP 393f7e68bbfSRussell King select PCI 39463f385cdSArnaud Patard select GENERIC_GPIO 395bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 396f999b8bdSMartin Michlmayr help 3973f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 3983f7e5815SLennert Buytenhek processors. 3993f7e5815SLennert Buytenhek 4003f7e5815SLennert Buytenhekconfig ARCH_IOP33X 4013f7e5815SLennert Buytenhek bool "IOP33x-based" 4023f7e5815SLennert Buytenhek depends on MMU 403c750815eSRussell King select CPU_XSCALE 4047ae1f7ecSLennert Buytenhek select PLAT_IOP 4053f7e5815SLennert Buytenhek select PCI 40663f385cdSArnaud Patard select GENERIC_GPIO 407bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 4083f7e5815SLennert Buytenhek help 4093f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 4101da177e4SLinus Torvalds 4113b938be6SRussell Kingconfig ARCH_IXP23XX 4123b938be6SRussell King bool "IXP23XX-based" 413588ef769SDan Williams depends on MMU 414c750815eSRussell King select CPU_XSC3 415285f5fa7SDan Williams select PCI 416285f5fa7SDan Williams help 4173b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvaldsconfig ARCH_IXP2000 4201da177e4SLinus Torvalds bool "IXP2400/2800-based" 421a4f7e763SRussell King depends on MMU 422c750815eSRussell King select CPU_XSCALE 423f7e68bbfSRussell King select PCI 424f999b8bdSMartin Michlmayr help 425f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 4261da177e4SLinus Torvalds 4273b938be6SRussell Kingconfig ARCH_IXP4XX 4283b938be6SRussell King bool "IXP4xx-based" 429a4f7e763SRussell King depends on MMU 430c750815eSRussell King select CPU_XSCALE 4318858e9afSMilan Svoboda select GENERIC_GPIO 4323b938be6SRussell King select GENERIC_TIME 4333b938be6SRussell King select GENERIC_CLOCKEVENTS 434485bdde7SRussell King select DMABOUNCE if PCI 435c4713074SLennert Buytenhek help 4363b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 437c4713074SLennert Buytenhek 4381da177e4SLinus Torvaldsconfig ARCH_L7200 4391da177e4SLinus Torvalds bool "LinkUp-L7200" 440c750815eSRussell King select CPU_ARM720T 4411da177e4SLinus Torvalds select FIQ 4421da177e4SLinus Torvalds help 4431da177e4SLinus Torvalds Say Y here if you intend to run this kernel on a LinkUp Systems 4441da177e4SLinus Torvalds L7200 Software Development Board which uses an ARM720T processor. 4451da177e4SLinus Torvalds Information on this board can be obtained at: 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds <http://www.linkupsys.com/> 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds If you have any questions or comments about the Linux kernel port 4501da177e4SLinus Torvalds to this board, send e-mail to <sjhill@cotw.com>. 4511da177e4SLinus Torvalds 452edabd38eSSaeed Bisharaconfig ARCH_DOVE 453edabd38eSSaeed Bishara bool "Marvell Dove" 454edabd38eSSaeed Bishara select PCI 455edabd38eSSaeed Bishara select GENERIC_GPIO 456edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 457edabd38eSSaeed Bishara select GENERIC_TIME 458edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 459edabd38eSSaeed Bishara select PLAT_ORION 460edabd38eSSaeed Bishara help 461edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 462edabd38eSSaeed Bishara 463651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 464651c74c7SSaeed Bishara bool "Marvell Kirkwood" 465c750815eSRussell King select CPU_FEROCEON 466651c74c7SSaeed Bishara select PCI 4674c213430SLennert Buytenhek select GENERIC_GPIO 468a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 469651c74c7SSaeed Bishara select GENERIC_TIME 470651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 471651c74c7SSaeed Bishara select PLAT_ORION 472651c74c7SSaeed Bishara help 473651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 474651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 475651c74c7SSaeed Bishara 476788c9700SRussell Kingconfig ARCH_LOKI 477788c9700SRussell King bool "Marvell Loki (88RC8480)" 478788c9700SRussell King select CPU_FEROCEON 479788c9700SRussell King select GENERIC_TIME 480788c9700SRussell King select GENERIC_CLOCKEVENTS 481788c9700SRussell King select PLAT_ORION 482788c9700SRussell King help 483788c9700SRussell King Support for the Marvell Loki (88RC8480) SoC. 484788c9700SRussell King 485788c9700SRussell Kingconfig ARCH_MV78XX0 486788c9700SRussell King bool "Marvell MV78xx0" 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 MV78xx0 series SoCs: 496788c9700SRussell King MV781x0, MV782x0. 497788c9700SRussell King 498788c9700SRussell Kingconfig ARCH_ORION5X 499788c9700SRussell King bool "Marvell Orion" 500788c9700SRussell King depends on MMU 501788c9700SRussell King select CPU_FEROCEON 502788c9700SRussell King select PCI 503788c9700SRussell King select GENERIC_GPIO 504a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 505788c9700SRussell King select GENERIC_TIME 506788c9700SRussell King select GENERIC_CLOCKEVENTS 507788c9700SRussell King select PLAT_ORION 508788c9700SRussell King help 509788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 510788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 511788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 512788c9700SRussell King 513788c9700SRussell Kingconfig ARCH_MMP 514788c9700SRussell King bool "Marvell PXA168/910" 515788c9700SRussell King depends on MMU 516788c9700SRussell King select GENERIC_GPIO 517788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 518788c9700SRussell King select HAVE_CLK 519788c9700SRussell King select COMMON_CLKDEV 520788c9700SRussell King select GENERIC_TIME 521788c9700SRussell King select GENERIC_CLOCKEVENTS 522788c9700SRussell King select TICK_ONESHOT 523788c9700SRussell King select PLAT_PXA 524788c9700SRussell King help 525788c9700SRussell King Support for Marvell's PXA168/910 processor line. 526788c9700SRussell King 527c53c9cf6SAndrew Victorconfig ARCH_KS8695 528c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 529c750815eSRussell King select CPU_ARM922T 5308a87a996SAndrew Victor select GENERIC_GPIO 53172880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 532c53c9cf6SAndrew Victor help 533c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 534c53c9cf6SAndrew Victor System-on-Chip devices. 535c53c9cf6SAndrew Victor 5369918cda5SUwe Kleine-Königconfig ARCH_NS9XXX 5379918cda5SUwe Kleine-König bool "NetSilicon NS9xxx" 538c750815eSRussell King select CPU_ARM926T 539689f2a01SUwe Kleine-König select GENERIC_GPIO 540cef5975dSUwe Kleine-König select GENERIC_TIME 541c0bb87f7SUwe Kleine-König select GENERIC_CLOCKEVENTS 5429483a578SDavid Brownell select HAVE_CLK 5439918cda5SUwe Kleine-König help 5449918cda5SUwe Kleine-König Say Y here if you intend to run this kernel on a NetSilicon NS9xxx 5459918cda5SUwe Kleine-König System. 5469918cda5SUwe Kleine-König 5479918cda5SUwe Kleine-König <http://www.digi.com/products/microprocessors/index.jsp> 5489918cda5SUwe Kleine-König 549788c9700SRussell Kingconfig ARCH_W90X900 550788c9700SRussell King bool "Nuvoton W90X900 CPU" 551788c9700SRussell King select CPU_ARM926T 552c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 553c52d3d68Swanzongshun select GENERIC_GPIO 554d2c24195Swanzongshun select HAVE_CLK 5550e4a34bbSwanzongshun select COMMON_CLKDEV 55658b5369eSwanzongshun select GENERIC_TIME 55758b5369eSwanzongshun select GENERIC_CLOCKEVENTS 558777f9bebSLennert Buytenhek help 559a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 560a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 561a8bc4eadSwanzongshun the ARM series product line, you can login the following 562a8bc4eadSwanzongshun link address to know more. 563a8bc4eadSwanzongshun 564a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 565a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 566585cf175STzachi Perelstein 567a62e9030Swanzongshunconfig ARCH_NUC93X 568a62e9030Swanzongshun bool "Nuvoton NUC93X CPU" 569a62e9030Swanzongshun select CPU_ARM926T 570a62e9030Swanzongshun select HAVE_CLK 571a62e9030Swanzongshun select COMMON_CLKDEV 572a62e9030Swanzongshun help 573a62e9030Swanzongshun Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a 574a62e9030Swanzongshun low-power and high performance MPEG-4/JPEG multimedia controller chip. 575a62e9030Swanzongshun 5764af6fee1SDeepak Saxenaconfig ARCH_PNX4008 5774af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 578c750815eSRussell King select CPU_ARM926T 5799483a578SDavid Brownell select HAVE_CLK 5806985a5adSRussell King select COMMON_CLKDEV 5814af6fee1SDeepak Saxena help 5824af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 5834af6fee1SDeepak Saxena 5841da177e4SLinus Torvaldsconfig ARCH_PXA 5852c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 586a4f7e763SRussell King depends on MMU 587034d2f5aSAl Viro select ARCH_MTD_XIP 58889c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 5890a938b97SDavid Brownell select GENERIC_GPIO 5909483a578SDavid Brownell select HAVE_CLK 5918c3abc7dSRussell King select COMMON_CLKDEV 5927444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 59345cf5eefSNicolas Pitre select GENERIC_TIME 594981d0f39SEric Miao select GENERIC_CLOCKEVENTS 595a88264c2SRussell King select TICK_ONESHOT 596bd5ce433SEric Miao select PLAT_PXA 597f999b8bdSMartin Michlmayr help 5982c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 5991da177e4SLinus Torvalds 600788c9700SRussell Kingconfig ARCH_MSM 601788c9700SRussell King bool "Qualcomm MSM" 602788c9700SRussell King select CPU_V6 60349cbe786SEric Miao select GENERIC_TIME 60449cbe786SEric Miao select GENERIC_CLOCKEVENTS 60549cbe786SEric Miao help 606788c9700SRussell King Support for Qualcomm MSM7K based systems. This runs on the ARM11 607788c9700SRussell King apps processor of the MSM7K and depends on a shared memory 608788c9700SRussell King interface to the ARM9 modem processor which runs the baseband stack 609788c9700SRussell King and controls some vital subsystems (clock and power control, etc). 61049cbe786SEric Miao 6111da177e4SLinus Torvaldsconfig ARCH_RPC 6121da177e4SLinus Torvalds bool "RiscPC" 6131da177e4SLinus Torvalds select ARCH_ACORN 6141da177e4SLinus Torvalds select FIQ 6151da177e4SLinus Torvalds select TIMER_ACORN 616a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 617341eb781SBen Dooks select HAVE_PATA_PLATFORM 618065909b9SRussell King select ISA_DMA_API 6195ea81769SAl Viro select NO_IOPORT 62007f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 6211da177e4SLinus Torvalds help 6221da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 6231da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvaldsconfig ARCH_SA1100 6261da177e4SLinus Torvalds bool "SA1100-based" 627c750815eSRussell King select CPU_SA1100 628f7e68bbfSRussell King select ISA 62905944d74SRussell King select ARCH_SPARSEMEM_ENABLE 630034d2f5aSAl Viro select ARCH_MTD_XIP 63189c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 6321937f5b9SRussell King select CPU_FREQ 6330a938b97SDavid Brownell select GENERIC_GPIO 634d142b6e7SRussell King select GENERIC_TIME 6353e238be2SRussell King select GENERIC_CLOCKEVENTS 6369483a578SDavid Brownell select HAVE_CLK 6373e238be2SRussell King select TICK_ONESHOT 6387444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 639f999b8bdSMartin Michlmayr help 640f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvaldsconfig ARCH_S3C2410 643e4d06e39SBen Dooks bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" 6440a938b97SDavid Brownell select GENERIC_GPIO 6459d56c02aSBen Dooks select ARCH_HAS_CPUFREQ 6469483a578SDavid Brownell select HAVE_CLK 6471da177e4SLinus Torvalds help 6481da177e4SLinus Torvalds Samsung S3C2410X CPU based systems, such as the Simtec Electronics 6491da177e4SLinus Torvalds BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or 650f6c8965aSMartin Michlmayr the Samsung SMDK2410 development board (and derivatives). 6511da177e4SLinus Torvalds 652a08ab637SBen Dooksconfig ARCH_S3C64XX 653a08ab637SBen Dooks bool "Samsung S3C64XX" 654a08ab637SBen Dooks select GENERIC_GPIO 655a08ab637SBen Dooks select HAVE_CLK 65689c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 657a08ab637SBen Dooks help 658a08ab637SBen Dooks Samsung S3C64XX series based systems 659a08ab637SBen Dooks 6605a7652f2SByungho Minconfig ARCH_S5PC1XX 6615a7652f2SByungho Min bool "Samsung S5PC1XX" 6625a7652f2SByungho Min select GENERIC_GPIO 6635a7652f2SByungho Min select HAVE_CLK 6645a7652f2SByungho Min select CPU_V7 665d6d502faSKukjin Kim select ARM_L1_CACHE_SHIFT_6 6665a7652f2SByungho Min help 6675a7652f2SByungho Min Samsung S5PC1XX series based systems 6685a7652f2SByungho Min 6691da177e4SLinus Torvaldsconfig ARCH_SHARK 6701da177e4SLinus Torvalds bool "Shark" 671c750815eSRussell King select CPU_SA110 672f7e68bbfSRussell King select ISA 673f7e68bbfSRussell King select ISA_DMA 6743bca103aSNicolas Pitre select ZONE_DMA 675f7e68bbfSRussell King select PCI 676f999b8bdSMartin Michlmayr help 677f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 678f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 6791da177e4SLinus Torvalds 6801da177e4SLinus Torvaldsconfig ARCH_LH7A40X 6811da177e4SLinus Torvalds bool "Sharp LH7A40X" 682c750815eSRussell King select CPU_ARM922T 6834ba3f7c5SRussell King select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM 6844ba3f7c5SRussell King select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM 6851da177e4SLinus Torvalds help 6861da177e4SLinus Torvalds Say Y here for systems based on one of the Sharp LH7A40X 6871da177e4SLinus Torvalds System on a Chip processors. These CPUs include an ARM922T 6881da177e4SLinus Torvalds core with a wide array of integrated devices for 6891da177e4SLinus Torvalds hand-held and low-power applications. 6901da177e4SLinus Torvalds 691d98aac75SLinus Walleijconfig ARCH_U300 692d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 693d98aac75SLinus Walleij depends on MMU 694d98aac75SLinus Walleij select CPU_ARM926T 695bc581770SLinus Walleij select HAVE_TCM 696d98aac75SLinus Walleij select ARM_AMBA 697d98aac75SLinus Walleij select ARM_VIC 698d98aac75SLinus Walleij select GENERIC_TIME 699d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 700d98aac75SLinus Walleij select HAVE_CLK 701d98aac75SLinus Walleij select COMMON_CLKDEV 702d98aac75SLinus Walleij select GENERIC_GPIO 703d98aac75SLinus Walleij help 704d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 705d98aac75SLinus Walleij 7067c6337e2SKevin Hilmanconfig ARCH_DAVINCI 7077c6337e2SKevin Hilman bool "TI DaVinci" 708c750815eSRussell King select CPU_ARM926T 7097c6337e2SKevin Hilman select GENERIC_TIME 7107c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 7113d9edf09SVladimir Barinov select GENERIC_GPIO 712dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 7139483a578SDavid Brownell select HAVE_CLK 7143bca103aSNicolas Pitre select ZONE_DMA 7159232fcc9SKevin Hilman select HAVE_IDE 716c5b736d0SKevin Hilman select COMMON_CLKDEV 71720e9969bSDavid Brownell select GENERIC_ALLOCATOR 718ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 7197c6337e2SKevin Hilman help 7207c6337e2SKevin Hilman Support for TI's DaVinci platform. 7217c6337e2SKevin Hilman 7223b938be6SRussell Kingconfig ARCH_OMAP 7233b938be6SRussell King bool "TI OMAP" 7243b938be6SRussell King select GENERIC_GPIO 7259483a578SDavid Brownell select HAVE_CLK 7267444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 72789c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 7283b938be6SRussell King select GENERIC_TIME 72906cad098SKevin Hilman select GENERIC_CLOCKEVENTS 7309af915daSSriram select ARCH_HAS_HOLES_MEMORYMODEL 7313b938be6SRussell King help 7323b938be6SRussell King Support for TI's OMAP platform (OMAP1 and OMAP2). 7333b938be6SRussell King 7346288e28dSLeo Chenconfig ARCH_BCMRING 7356288e28dSLeo Chen bool "Broadcom BCMRING" 7366288e28dSLeo Chen depends on MMU 7376288e28dSLeo Chen select CPU_V6 7386288e28dSLeo Chen select ARM_AMBA 7396288e28dSLeo Chen select COMMON_CLKDEV 7406288e28dSLeo Chen select GENERIC_TIME 7416288e28dSLeo Chen select GENERIC_CLOCKEVENTS 7426288e28dSLeo Chen select ARCH_WANT_OPTIONAL_GPIOLIB 7436288e28dSLeo Chen help 7446288e28dSLeo Chen Support for Broadcom's BCMRing platform. 7456288e28dSLeo Chen 746850265e8SSrinidhi Kasagarconfig ARCH_U8500 747850265e8SSrinidhi Kasagar bool "ST-Ericsson U8500 Series" 748850265e8SSrinidhi Kasagar select CPU_V7 749850265e8SSrinidhi Kasagar select ARM_AMBA 750850265e8SSrinidhi Kasagar select GENERIC_TIME 751850265e8SSrinidhi Kasagar select GENERIC_CLOCKEVENTS 752850265e8SSrinidhi Kasagar select COMMON_CLKDEV 753850265e8SSrinidhi Kasagar help 754850265e8SSrinidhi Kasagar Support for ST-Ericsson's Ux500 architecture 755850265e8SSrinidhi Kasagar 7561da177e4SLinus Torvaldsendchoice 7571da177e4SLinus Torvalds 75895b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig" 75995b8f20fSRussell King 76095b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig" 76195b8f20fSRussell King 76295b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig" 76395b8f20fSRussell King 7641da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 7651da177e4SLinus Torvalds 76695b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig" 76795b8f20fSRussell King 76895b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig" 76995b8f20fSRussell King 770e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 771e7736d47SLennert Buytenhek 7721da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 7731da177e4SLinus Torvalds 77459d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 77559d3a193SPaulius Zaleckas 77695b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig" 77795b8f20fSRussell King 7781da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 7791da177e4SLinus Torvalds 7803f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 7813f7e5815SLennert Buytenhek 7823f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 7831da177e4SLinus Torvalds 784285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 785285f5fa7SDan Williams 7861da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 7891da177e4SLinus Torvalds 790c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 791c4713074SLennert Buytenhek 79295b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig" 79395b8f20fSRussell King 79495b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig" 79595b8f20fSRussell King 79695b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig" 79795b8f20fSRussell King 798777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig" 799777f9bebSLennert Buytenhek 80095b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig" 80195b8f20fSRussell King 802794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 803794d15b2SStanislav Samsonov 80495b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig" 8051da177e4SLinus Torvalds 80695b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig" 80749cbe786SEric Miao 80895b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig" 80995b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig" 81095b8f20fSRussell King 81195b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig" 8121da177e4SLinus Torvalds 813d91a8910SRussell Kingsource "arch/arm/mach-nuc93x/Kconfig" 814d91a8910SRussell King 815d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 816d48af15eSTony Lindgren 817d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 8181da177e4SLinus Torvalds 8191dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 8201dbae815STony Lindgren 8219dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 822585cf175STzachi Perelstein 82395b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig" 82495b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig" 8251da177e4SLinus Torvalds 82695b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig" 82795b8f20fSRussell King 82895b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig" 82995b8f20fSRussell King 83095b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig" 831edabd38eSSaeed Bishara 832cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 833a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 834a08ab637SBen Dookssource "arch/arm/plat-s3c64xx/Kconfig" 835d58153d8SBen Dookssource "arch/arm/plat-s3c/Kconfig" 8365a7652f2SByungho Minsource "arch/arm/plat-s5pc1xx/Kconfig" 837a21765a7SBen Dooks 838a21765a7SBen Dooksif ARCH_S3C2410 839a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig" 8401da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig" 841a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 842a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 843a21765a7SBen Dookssource "arch/arm/mach-s3c2442/Kconfig" 844e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig" 845a21765a7SBen Dooksendif 8461da177e4SLinus Torvalds 847a08ab637SBen Dooksif ARCH_S3C64XX 848a08ab637SBen Dookssource "arch/arm/mach-s3c6400/Kconfig" 849a08ab637SBen Dookssource "arch/arm/mach-s3c6410/Kconfig" 850a08ab637SBen Dooksendif 851a08ab637SBen Dooks 8527bd0f2f5Sdmitry pervushinsource "arch/arm/plat-stmp3xxx/Kconfig" 8537bd0f2f5Sdmitry pervushin 8545a7652f2SByungho Minif ARCH_S5PC1XX 8555a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 8565a7652f2SByungho Minendif 8575a7652f2SByungho Min 85895b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig" 8591da177e4SLinus Torvalds 86095b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig" 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 8631da177e4SLinus Torvalds 8647ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 8657ec80ddfSwanzongshun 8661da177e4SLinus Torvalds# Definitions to make life easier 8671da177e4SLinus Torvaldsconfig ARCH_ACORN 8681da177e4SLinus Torvalds bool 8691da177e4SLinus Torvalds 8707ae1f7ecSLennert Buytenhekconfig PLAT_IOP 8717ae1f7ecSLennert Buytenhek bool 872469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 873980f2296SMikael Pettersson select GENERIC_TIME 8747ae1f7ecSLennert Buytenhek 87569b02f6aSLennert Buytenhekconfig PLAT_ORION 87669b02f6aSLennert Buytenhek bool 87769b02f6aSLennert Buytenhek 878bd5ce433SEric Miaoconfig PLAT_PXA 879bd5ce433SEric Miao bool 880bd5ce433SEric Miao 8811da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 8821da177e4SLinus Torvalds 883afe4b25eSLennert Buytenhekconfig IWMMXT 884afe4b25eSLennert Buytenhek bool "Enable iWMMXt support" 88540305a58SEric Miao depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK 88640305a58SEric Miao default y if PXA27x || PXA3xx || ARCH_MMP 887afe4b25eSLennert Buytenhek help 888afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 889afe4b25eSLennert Buytenhek running on a CPU that supports it. 890afe4b25eSLennert Buytenhek 8911da177e4SLinus Torvalds# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER 8921da177e4SLinus Torvaldsconfig XSCALE_PMU 8931da177e4SLinus Torvalds bool 8941da177e4SLinus Torvalds depends on CPU_XSCALE && !XSCALE_PMU_TIMER 8951da177e4SLinus Torvalds default y 8961da177e4SLinus Torvalds 8970f4f0672SJamie Ilesconfig CPU_HAS_PMU 8980f4f0672SJamie Iles depends on CPU_V6 || CPU_V7 || XSCALE_PMU 8990f4f0672SJamie Iles default y 9000f4f0672SJamie Iles bool 9010f4f0672SJamie Iles 9023b93e7b0SHyok S. Choiif !MMU 9033b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 9043b93e7b0SHyok S. Choiendif 9053b93e7b0SHyok S. Choi 9069cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 9079cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 9089cba3cccSCatalin Marinas depends on CPU_V6 && !SMP 9099cba3cccSCatalin Marinas help 9109cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 9119cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 9129cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 9139cba3cccSCatalin Marinas recommended workaround. 9149cba3cccSCatalin Marinas 9157ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 9167ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 9177ce236fcSCatalin Marinas depends on CPU_V7 9187ce236fcSCatalin Marinas help 9197ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 9207ce236fcSCatalin Marinas (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 9217ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 9227ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 9237ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 9247ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 9257ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 9267ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 9277ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 9287ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 9297ce236fcSCatalin Marinas available in non-secure mode. 9307ce236fcSCatalin Marinas 931855c551fSCatalin Marinasconfig ARM_ERRATA_458693 932855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 933855c551fSCatalin Marinas depends on CPU_V7 934855c551fSCatalin Marinas help 935855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 936855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 937855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 938855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 939855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 940855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 941855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 942855c551fSCatalin Marinas register may not be available in non-secure mode. 943855c551fSCatalin Marinas 9440516e464SCatalin Marinasconfig ARM_ERRATA_460075 9450516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 9460516e464SCatalin Marinas depends on CPU_V7 9470516e464SCatalin Marinas help 9480516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 9490516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 9500516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 9510516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 9520516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 9530516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 9540516e464SCatalin Marinas may not be available in non-secure mode. 9550516e464SCatalin Marinas 9569e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369 9579e65582aSSantosh Shilimkar bool "Clean & Invalidate maintenance operations do not invalidate clean lines" 9589e65582aSSantosh Shilimkar depends on CACHE_L2X0 && ARCH_OMAP4 9599e65582aSSantosh Shilimkar help 9609e65582aSSantosh Shilimkar The PL310 L2 cache controller implements three types of Clean & 9619e65582aSSantosh Shilimkar Invalidate maintenance operations: by Physical Address 9629e65582aSSantosh Shilimkar (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 9639e65582aSSantosh Shilimkar They are architecturally defined to behave as the execution of a 9649e65582aSSantosh Shilimkar clean operation followed immediately by an invalidate operation, 9659e65582aSSantosh Shilimkar both performing to the same memory location. This functionality 9669e65582aSSantosh Shilimkar is not correctly implemented in PL310 as clean lines are not 9679e65582aSSantosh Shilimkar invalidated as a result of these operations. Note that this errata 9689e65582aSSantosh Shilimkar uses Texas Instrument's secure monitor api. 9691da177e4SLinus Torvaldsendmenu 9701da177e4SLinus Torvalds 9711da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER 9741da177e4SLinus Torvalds int 9751da177e4SLinus Torvalds depends on SA1111 9761da177e4SLinus Torvalds default "9" 9771da177e4SLinus Torvalds 9781da177e4SLinus Torvaldsmenu "Bus support" 9791da177e4SLinus Torvalds 9801da177e4SLinus Torvaldsconfig ARM_AMBA 9811da177e4SLinus Torvalds bool 9821da177e4SLinus Torvalds 9831da177e4SLinus Torvaldsconfig ISA 9841da177e4SLinus Torvalds bool 9851da177e4SLinus Torvalds help 9861da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 9871da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 9881da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 9891da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 9901da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 9911da177e4SLinus Torvalds 992065909b9SRussell King# Select ISA DMA controller support 9931da177e4SLinus Torvaldsconfig ISA_DMA 9941da177e4SLinus Torvalds bool 995065909b9SRussell King select ISA_DMA_API 9961da177e4SLinus Torvalds 997065909b9SRussell King# Select ISA DMA interface 9985cae841bSAl Viroconfig ISA_DMA_API 9995cae841bSAl Viro bool 10005cae841bSAl Viro 10011da177e4SLinus Torvaldsconfig PCI 1002a0113a99SMike Rapoport bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE 10031da177e4SLinus Torvalds help 10041da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 10051da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 10061da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 10071da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 10081da177e4SLinus Torvalds 100936e23590SMatthew Wilcoxconfig PCI_SYSCALL 101036e23590SMatthew Wilcox def_bool PCI 101136e23590SMatthew Wilcox 10121da177e4SLinus Torvalds# Select the host bridge type 10131da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505 10141da177e4SLinus Torvalds bool 10151da177e4SLinus Torvalds depends on PCI && ARCH_SHARK 10161da177e4SLinus Torvalds default y 10171da177e4SLinus Torvalds 1018a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 1019a0113a99SMike Rapoport bool 1020a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 1021a0113a99SMike Rapoport default y 1022a0113a99SMike Rapoport select DMABOUNCE 1023a0113a99SMike Rapoport 10241da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 10251da177e4SLinus Torvalds 10261da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvaldsendmenu 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvaldsmenu "Kernel Features" 10311da177e4SLinus Torvalds 10320567a0c0SKevin Hilmansource "kernel/time/Kconfig" 10330567a0c0SKevin Hilman 10341da177e4SLinus Torvaldsconfig SMP 10351da177e4SLinus Torvalds bool "Symmetric Multi-Processing (EXPERIMENTAL)" 103642578c82SRussell King depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ 1037850265e8SSrinidhi Kasagar MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 1038bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 1039f6dd9fa5SJens Axboe select USE_GENERIC_SMP_HELPERS 1040850265e8SSrinidhi Kasagar select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 10411da177e4SLinus Torvalds help 10421da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 10431da177e4SLinus Torvalds a system with only one CPU, like most personal computers, say N. If 10441da177e4SLinus Torvalds you have a system with more than one CPU, say Y. 10451da177e4SLinus Torvalds 10461da177e4SLinus Torvalds If you say N here, the kernel will run on single and multiprocessor 10471da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 10481da177e4SLinus Torvalds you say Y here, the kernel will run on many, but not all, single 10491da177e4SLinus Torvalds processor machines. On a single processor machine, the kernel will 10501da177e4SLinus Torvalds run faster if you say N here. 10511da177e4SLinus Torvalds 105203502faaSAdrian Bunk See also <file:Documentation/i386/IO-APIC.txt>, 10531da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 10541da177e4SLinus Torvalds <http://www.linuxdoc.org/docs.html#howto>. 10551da177e4SLinus Torvalds 10561da177e4SLinus Torvalds If you don't know what to do here, say N. 10571da177e4SLinus Torvalds 1058a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1059a8cbcd92SRussell King bool 1060a8cbcd92SRussell King depends on SMP 1061a8cbcd92SRussell King help 1062a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1063a8cbcd92SRussell King 1064f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1065f32f4ce2SRussell King bool 1066f32f4ce2SRussell King depends on SMP 1067f32f4ce2SRussell King help 1068f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1069f32f4ce2SRussell King 10708d5796d2SLennert Buytenhekchoice 10718d5796d2SLennert Buytenhek prompt "Memory split" 10728d5796d2SLennert Buytenhek default VMSPLIT_3G 10738d5796d2SLennert Buytenhek help 10748d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 10758d5796d2SLennert Buytenhek 10768d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 10778d5796d2SLennert Buytenhek option alone! 10788d5796d2SLennert Buytenhek 10798d5796d2SLennert Buytenhek config VMSPLIT_3G 10808d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 10818d5796d2SLennert Buytenhek config VMSPLIT_2G 10828d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 10838d5796d2SLennert Buytenhek config VMSPLIT_1G 10848d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 10858d5796d2SLennert Buytenhekendchoice 10868d5796d2SLennert Buytenhek 10878d5796d2SLennert Buytenhekconfig PAGE_OFFSET 10888d5796d2SLennert Buytenhek hex 10898d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 10908d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 10918d5796d2SLennert Buytenhek default 0xC0000000 10928d5796d2SLennert Buytenhek 10931da177e4SLinus Torvaldsconfig NR_CPUS 10941da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 10951da177e4SLinus Torvalds range 2 32 10961da177e4SLinus Torvalds depends on SMP 10971da177e4SLinus Torvalds default "4" 10981da177e4SLinus Torvalds 1099a054a811SRussell Kingconfig HOTPLUG_CPU 1100a054a811SRussell King bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1101a054a811SRussell King depends on SMP && HOTPLUG && EXPERIMENTAL 1102a054a811SRussell King help 1103a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1104a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1105a054a811SRussell King 110637ee16aeSRussell Kingconfig LOCAL_TIMERS 110737ee16aeSRussell King bool "Use local timer interrupts" 110842578c82SRussell King depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ 1109850265e8SSrinidhi Kasagar REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) 111037ee16aeSRussell King default y 1111850265e8SSrinidhi Kasagar select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) 111237ee16aeSRussell King help 111337ee16aeSRussell King Enable support for local timers on SMP platforms, rather then the 111437ee16aeSRussell King legacy IPI broadcast method. Local timers allows the system 111537ee16aeSRussell King accounting to be spread across the timer interval, preventing a 111637ee16aeSRussell King "thundering herd" at every timer tick. 111737ee16aeSRussell King 1118d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 11191da177e4SLinus Torvalds 1120f8065813SRussell Kingconfig HZ 1121f8065813SRussell King int 1122f8065813SRussell King default 128 if ARCH_L7200 1123f8065813SRussell King default 200 if ARCH_EBSA110 || ARCH_S3C2410 1124bfe65704SRussell King default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 11255248c657SDavid Brownell default AT91_TIMER_HZ if ARCH_AT91 1126f8065813SRussell King default 100 1127f8065813SRussell King 112816c79651SCatalin Marinasconfig THUMB2_KERNEL 112916c79651SCatalin Marinas bool "Compile the kernel in Thumb-2 mode" 113016c79651SCatalin Marinas depends on CPU_V7 && EXPERIMENTAL 113116c79651SCatalin Marinas select AEABI 113216c79651SCatalin Marinas select ARM_ASM_UNIFIED 113316c79651SCatalin Marinas help 113416c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 113516c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 113616c79651SCatalin Marinas ARM-Thumb syntax is needed. 113716c79651SCatalin Marinas 113816c79651SCatalin Marinas If unsure, say N. 113916c79651SCatalin Marinas 11400becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 11410becb088SCatalin Marinas bool 11420becb088SCatalin Marinas 1143704bdda0SNicolas Pitreconfig AEABI 1144704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1145704bdda0SNicolas Pitre help 1146704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1147704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1148704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1149704bdda0SNicolas Pitre 1150704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1151704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1152704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1153704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1154704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1155704bdda0SNicolas Pitre 1156704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1157704bdda0SNicolas Pitre 11586c90c872SNicolas Pitreconfig OABI_COMPAT 1159a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 116061c484d4SNicolas Pitre depends on AEABI && EXPERIMENTAL 11616c90c872SNicolas Pitre default y 11626c90c872SNicolas Pitre help 11636c90c872SNicolas Pitre This option preserves the old syscall interface along with the 11646c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 11656c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 11666c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 11676c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 11686c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 11696c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 11706c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 11716c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 11726c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 11736c90c872SNicolas Pitre at all). If in doubt say Y. 11746c90c872SNicolas Pitre 1175eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1176e80d6a24SMel Gorman bool 1177e80d6a24SMel Gorman 117807a2f737SRussell King# Discontigmem is deprecated 11793f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE 11801da177e4SLinus Torvalds bool 11811da177e4SLinus Torvalds 118205944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 118305944d74SRussell King bool 118405944d74SRussell King 118507a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 118607a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 118707a2f737SRussell King 118805944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 118907a2f737SRussell King def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE 119005944d74SRussell King 1191c80d79d7SYasunori Gotoconfig NODES_SHIFT 1192c80d79d7SYasunori Goto int 1193c80d79d7SYasunori Goto default "4" if ARCH_LH7A40X 1194c80d79d7SYasunori Goto default "2" 1195c80d79d7SYasunori Goto depends on NEED_MULTIPLE_NODES 1196c80d79d7SYasunori Goto 1197053a96caSNicolas Pitreconfig HIGHMEM 1198053a96caSNicolas Pitre bool "High Memory Support (EXPERIMENTAL)" 1199053a96caSNicolas Pitre depends on MMU && EXPERIMENTAL 1200053a96caSNicolas Pitre help 1201053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1202053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1203053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1204053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1205053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1206053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1207053a96caSNicolas Pitre 1208053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1209053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1210053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1211053a96caSNicolas Pitre 1212053a96caSNicolas Pitre If unsure, say n. 1213053a96caSNicolas Pitre 121465cec8e3SRussell Kingconfig HIGHPTE 121565cec8e3SRussell King bool "Allocate 2nd-level pagetables from highmem" 121665cec8e3SRussell King depends on HIGHMEM 121765cec8e3SRussell King depends on !OUTER_CACHE 121865cec8e3SRussell King 12191b8873a0SJamie Ilesconfig HW_PERF_EVENTS 12201b8873a0SJamie Iles bool "Enable hardware performance counter support for perf events" 1221796d1295SJean PIHET depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7) 12221b8873a0SJamie Iles default y 12231b8873a0SJamie Iles help 12241b8873a0SJamie Iles Enable hardware performance counter support for perf events. If 12251b8873a0SJamie Iles disabled, perf events will use software events only. 12261b8873a0SJamie Iles 12273f22ab27SDave Hansensource "mm/Kconfig" 12283f22ab27SDave Hansen 12291da177e4SLinus Torvaldsconfig LEDS 12301da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1231e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 12328c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 12331da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 12341da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 123573a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 123625329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1237ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 12381da177e4SLinus Torvalds help 12391da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 12401da177e4SLinus Torvalds to provide useful information about your current system status. 12411da177e4SLinus Torvalds 12421da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 12431da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 12441da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 12451da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 12461da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 12471da177e4SLinus Torvalds system, but the driver will do nothing. 12481da177e4SLinus Torvalds 12491da177e4SLinus Torvaldsconfig LEDS_TIMER 12501da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1251eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1252eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12531da177e4SLinus Torvalds depends on LEDS 12540567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 12551da177e4SLinus Torvalds default y if ARCH_EBSA110 12561da177e4SLinus Torvalds help 12571da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 12581da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 12591da177e4SLinus Torvalds will flash regularly to indicate that the system is still 12601da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 12611da177e4SLinus Torvalds debugging unstable kernels. 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12641da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12651da177e4SLinus Torvalds will overrule the CPU usage LED. 12661da177e4SLinus Torvalds 12671da177e4SLinus Torvaldsconfig LEDS_CPU 12681da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1269eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1270eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1271eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 12721da177e4SLinus Torvalds depends on LEDS 12731da177e4SLinus Torvalds help 12741da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 12751da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 12761da177e4SLinus Torvalds is not currently executing. 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 12791da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 12801da177e4SLinus Torvalds will overrule the CPU usage LED. 12811da177e4SLinus Torvalds 12821da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 12831da177e4SLinus Torvalds bool 1284f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 12851da177e4SLinus Torvalds default y if !ARCH_EBSA110 1286e119bfffSRussell King select HAVE_PROC_CPU if PROC_FS 12871da177e4SLinus Torvalds help 12881da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 12891da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 12901da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 12911da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 12921da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 12931da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 12941da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 12951da177e4SLinus Torvalds 129639ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 129739ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 129839ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 129939ec58f3SLennert Buytenhek default y if CPU_FEROCEON 130039ec58f3SLennert Buytenhek help 130139ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 130239ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 130339ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 130439ec58f3SLennert Buytenhek 130539ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 130639ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 130739ec58f3SLennert Buytenhek such copy operations with large buffers. 130839ec58f3SLennert Buytenhek 130939ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 131039ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 131139ec58f3SLennert Buytenhek 13121da177e4SLinus Torvaldsendmenu 13131da177e4SLinus Torvalds 13141da177e4SLinus Torvaldsmenu "Boot options" 13151da177e4SLinus Torvalds 13161da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 13171da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 13181da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 13191da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 13201da177e4SLinus Torvalds default "0" 13211da177e4SLinus Torvalds help 13221da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 13231da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 13241da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 13251da177e4SLinus Torvalds value in their defconfig file. 13261da177e4SLinus Torvalds 13271da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 13281da177e4SLinus Torvalds 13291da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 13301da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 13311da177e4SLinus Torvalds default "0" 13321da177e4SLinus Torvalds help 1333f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1334f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1335f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1336f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1337f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1338f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 13391da177e4SLinus Torvalds 13401da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 13411da177e4SLinus Torvalds 13421da177e4SLinus Torvaldsconfig ZBOOT_ROM 13431da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 13441da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 13451da177e4SLinus Torvalds help 13461da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 13471da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 13481da177e4SLinus Torvalds 13491da177e4SLinus Torvaldsconfig CMDLINE 13501da177e4SLinus Torvalds string "Default kernel command string" 13511da177e4SLinus Torvalds default "" 13521da177e4SLinus Torvalds help 13531da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 13541da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 13551da177e4SLinus Torvalds architectures, you should supply some command-line options at build 13561da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 13571da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 13581da177e4SLinus Torvalds 13591da177e4SLinus Torvaldsconfig XIP_KERNEL 13601da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 13611da177e4SLinus Torvalds depends on !ZBOOT_ROM 13621da177e4SLinus Torvalds help 13631da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 13641da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 13651da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 13661da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 13671da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 13681da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 13691da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 13701da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 13711da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 13721da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 13731da177e4SLinus Torvalds 13741da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 13751da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 13761da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 13771da177e4SLinus Torvalds 13781da177e4SLinus Torvalds If unsure, say N. 13791da177e4SLinus Torvalds 13801da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 13811da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 13821da177e4SLinus Torvalds depends on XIP_KERNEL 13831da177e4SLinus Torvalds default "0x00080000" 13841da177e4SLinus Torvalds help 13851da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 13861da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 13871da177e4SLinus Torvalds own flash usage. 13881da177e4SLinus Torvalds 1389c587e4a6SRichard Purdieconfig KEXEC 1390c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 1391c587e4a6SRichard Purdie depends on EXPERIMENTAL 1392c587e4a6SRichard Purdie help 1393c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1394c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 139501dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1396c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1397c587e4a6SRichard Purdie 1398c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1399c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1400c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 1401c587e4a6SRichard Purdie support. 1402c587e4a6SRichard Purdie 14034cd9d6f7SRichard Purdieconfig ATAGS_PROC 14044cd9d6f7SRichard Purdie bool "Export atags in procfs" 1405b98d7291SUli Luckas depends on KEXEC 1406b98d7291SUli Luckas default y 14074cd9d6f7SRichard Purdie help 14084cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 14094cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 14104cd9d6f7SRichard Purdie 14111da177e4SLinus Torvaldsendmenu 14121da177e4SLinus Torvalds 1413ac9d7efcSRussell Kingmenu "CPU Power Management" 14141da177e4SLinus Torvalds 141589c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 14161da177e4SLinus Torvalds 14171da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 14181da177e4SLinus Torvalds 14191da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 14201da177e4SLinus Torvalds bool 14211da177e4SLinus Torvalds 14221da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 14231da177e4SLinus Torvalds bool 14241da177e4SLinus Torvalds 14251da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 14261da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 14271da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 14281da177e4SLinus Torvalds default y 14291da177e4SLinus Torvalds help 14301da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 14311da177e4SLinus Torvalds 14321da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 14331da177e4SLinus Torvalds 14341da177e4SLinus Torvalds If in doubt, say Y. 14351da177e4SLinus Torvalds 14369e2697ffSRussell Kingconfig CPU_FREQ_PXA 14379e2697ffSRussell King bool 14389e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 14399e2697ffSRussell King default y 14409e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 14419e2697ffSRussell King 1442b3748dddSMark Brownconfig CPU_FREQ_S3C64XX 1443b3748dddSMark Brown bool "CPUfreq support for Samsung S3C64XX CPUs" 1444b3748dddSMark Brown depends on CPU_FREQ && CPU_S3C6410 1445b3748dddSMark Brown 14469d56c02aSBen Dooksconfig CPU_FREQ_S3C 14479d56c02aSBen Dooks bool 14489d56c02aSBen Dooks help 14499d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 14509d56c02aSBen Dooks 14519d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 14529d56c02aSBen Dooks bool "CPUfreq driver for Samsung S3C24XX series CPUs" 14539d56c02aSBen Dooks depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL 14549d56c02aSBen Dooks select CPU_FREQ_S3C 14559d56c02aSBen Dooks help 14569d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 14579d56c02aSBen Dooks of CPUs. 14589d56c02aSBen Dooks 14599d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 14609d56c02aSBen Dooks 14619d56c02aSBen Dooks If in doubt, say N. 14629d56c02aSBen Dooks 14639d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 14649d56c02aSBen Dooks bool "Support CPUfreq changing of PLL frequency" 14659d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 14669d56c02aSBen Dooks help 14679d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 14689d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 14699d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 14709d56c02aSBen Dooks 14719d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 14729d56c02aSBen Dooks be built which may increase the size of the kernel image. 14739d56c02aSBen Dooks 14749d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 14759d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 14769d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14779d56c02aSBen Dooks help 14789d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 14799d56c02aSBen Dooks 14809d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 14819d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 14829d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 14839d56c02aSBen Dooks help 14849d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 14859d56c02aSBen Dooks 1486e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 1487e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 1488e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 1489e6d197a6SBen Dooks help 1490e6d197a6SBen Dooks Export status information via debugfs. 1491e6d197a6SBen Dooks 14921da177e4SLinus Torvaldsendif 14931da177e4SLinus Torvalds 1494ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 1495ac9d7efcSRussell King 1496ac9d7efcSRussell Kingendmenu 1497ac9d7efcSRussell King 14981da177e4SLinus Torvaldsmenu "Floating point emulation" 14991da177e4SLinus Torvalds 15001da177e4SLinus Torvaldscomment "At least one emulation must be selected" 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvaldsconfig FPE_NWFPE 15031da177e4SLinus Torvalds bool "NWFPE math emulation" 15048993a44cSNicolas Pitre depends on !AEABI || OABI_COMPAT 15051da177e4SLinus Torvalds ---help--- 15061da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 15071da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 15081da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 15091da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 15101da177e4SLinus Torvalds 15111da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 15121da177e4SLinus Torvalds early in the bootup. 15131da177e4SLinus Torvalds 15141da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 15151da177e4SLinus Torvalds bool "Support extended precision" 1516bedf142bSLennert Buytenhek depends on FPE_NWFPE 15171da177e4SLinus Torvalds help 15181da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 15191da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 15201da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 15211da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 15221da177e4SLinus Torvalds floating point emulator without any good reason. 15231da177e4SLinus Torvalds 15241da177e4SLinus Torvalds You almost surely want to say N here. 15251da177e4SLinus Torvalds 15261da177e4SLinus Torvaldsconfig FPE_FASTFPE 15271da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 15288993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 15291da177e4SLinus Torvalds ---help--- 15301da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 15311da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 15321da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 15331da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 15341da177e4SLinus Torvalds 15351da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 15361da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 15371da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 15381da177e4SLinus Torvalds choose NWFPE. 15391da177e4SLinus Torvalds 15401da177e4SLinus Torvaldsconfig VFP 15411da177e4SLinus Torvalds bool "VFP-format floating point maths" 1542c00d4ffdSRussell King depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 15431da177e4SLinus Torvalds help 15441da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 15451da177e4SLinus Torvalds if your hardware includes a VFP unit. 15461da177e4SLinus Torvalds 15471da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 15481da177e4SLinus Torvalds release notes and additional status information. 15491da177e4SLinus Torvalds 15501da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 15511da177e4SLinus Torvalds 155225ebee02SCatalin Marinasconfig VFPv3 155325ebee02SCatalin Marinas bool 155425ebee02SCatalin Marinas depends on VFP 155525ebee02SCatalin Marinas default y if CPU_V7 155625ebee02SCatalin Marinas 1557b5872db4SCatalin Marinasconfig NEON 1558b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 1559b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 1560b5872db4SCatalin Marinas help 1561b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 1562b5872db4SCatalin Marinas Extension. 1563b5872db4SCatalin Marinas 15641da177e4SLinus Torvaldsendmenu 15651da177e4SLinus Torvalds 15661da177e4SLinus Torvaldsmenu "Userspace binary formats" 15671da177e4SLinus Torvalds 15681da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 15691da177e4SLinus Torvalds 15701da177e4SLinus Torvaldsconfig ARTHUR 15711da177e4SLinus Torvalds tristate "RISC OS personality" 1572704bdda0SNicolas Pitre depends on !AEABI 15731da177e4SLinus Torvalds help 15741da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 15751da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 15761da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 15771da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 15781da177e4SLinus Torvalds will be called arthur). 15791da177e4SLinus Torvalds 15801da177e4SLinus Torvaldsendmenu 15811da177e4SLinus Torvalds 15821da177e4SLinus Torvaldsmenu "Power management options" 15831da177e4SLinus Torvalds 1584eceab4acSRussell Kingsource "kernel/power/Kconfig" 15851da177e4SLinus Torvalds 1586f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 1587f4cb5700SJohannes Berg def_bool y 1588f4cb5700SJohannes Berg 15891da177e4SLinus Torvaldsendmenu 15901da177e4SLinus Torvalds 1591d5950b43SSam Ravnborgsource "net/Kconfig" 1592d5950b43SSam Ravnborg 1593ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 15941da177e4SLinus Torvalds 15951da177e4SLinus Torvaldssource "fs/Kconfig" 15961da177e4SLinus Torvalds 15971da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 15981da177e4SLinus Torvalds 15991da177e4SLinus Torvaldssource "security/Kconfig" 16001da177e4SLinus Torvalds 16011da177e4SLinus Torvaldssource "crypto/Kconfig" 16021da177e4SLinus Torvalds 16031da177e4SLinus Torvaldssource "lib/Kconfig" 1604