11da177e4SLinus Torvaldsconfig ARM 21da177e4SLinus Torvalds bool 31da177e4SLinus Torvalds default y 4e17c6d56SDavid Woodhouse select HAVE_AOUT 524056f52SRussell King select HAVE_DMA_API_DEBUG 6d0ee9f40SArnd Bergmann select HAVE_IDE if PCI || ISA || PCMCIA 7*2dc6a016SMarek Szyprowski select HAVE_DMA_ATTRS 82778f620SRussell King select HAVE_MEMBLOCK 912b824fbSAlessandro Zummo select RTC_LIB 1075e7153aSRalf Baechle select SYS_SUPPORTS_APM_EMULATION 11a41297a0SRussell King select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI) 12fe166148SWill Deacon select HAVE_OPROFILE if (HAVE_PERF_EVENTS) 1309f05d85SRabin Vincent select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL 145cbad0ebSJason Wessel select HAVE_ARCH_KGDB 15856bc356SJon Medhurst select HAVE_KPROBES if !XIP_KERNEL 169edddaa2SAnanth N Mavinakayanahalli select HAVE_KRETPROBES if (HAVE_KPROBES) 17606576ceSSteven Rostedt select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 1880be7a7fSRabin Vincent select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL) 1980be7a7fSRabin Vincent select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) 200e341af8SRabin Vincent select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL) 21e39f5602SDavid Daney select ARCH_BINFMT_ELF_RANDOMIZE_PIE 221fe53268SDmitry Baryshkov select HAVE_GENERIC_DMA_COHERENT 23e7db7b42SAlbin Tonnerre select HAVE_KERNEL_GZIP 24e7db7b42SAlbin Tonnerre select HAVE_KERNEL_LZO 256e8699f7SAlbin Tonnerre select HAVE_KERNEL_LZMA 26a7f464f3SImre Kaloz select HAVE_KERNEL_XZ 27e360adbeSPeter Zijlstra select HAVE_IRQ_WORK 287ada189fSJamie Iles select HAVE_PERF_EVENTS 297ada189fSJamie Iles select PERF_USE_VMALLOC 30e513f8bfSWill Deacon select HAVE_REGS_AND_STACK_ACCESS_API 31e399b1a4SRussell King select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7)) 32ed60453fSRabin Vincent select HAVE_C_RECORDMCOUNT 33e2a93eccSLennert Buytenhek select HAVE_GENERIC_HARDIRQS 3425a5662aSThomas Gleixner select GENERIC_IRQ_SHOW 351fb90263SSantosh Shilimkar select CPU_PM if (SUSPEND || CPU_IDLE) 36e5bfb72cSMichael S. Tsirkin select GENERIC_PCI_IOMAP 37fada8dcfSRussell King select HAVE_BPF_JIT if NET 381da177e4SLinus Torvalds help 391da177e4SLinus Torvalds The ARM series is a line of low-power-consumption RISC chip designs 40f6c8965aSMartin Michlmayr licensed by ARM Ltd and targeted at embedded applications and 411da177e4SLinus Torvalds handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 421da177e4SLinus Torvalds manufactured, but legacy ARM-based PC hardware remains popular in 431da177e4SLinus Torvalds Europe. There is an ARM Linux project with a web page at 441da177e4SLinus Torvalds <http://www.arm.linux.org.uk/>. 451da177e4SLinus Torvalds 4674facffeSRussell Kingconfig ARM_HAS_SG_CHAIN 4774facffeSRussell King bool 4874facffeSRussell King 491a189b97SRussell Kingconfig HAVE_PWM 501a189b97SRussell King bool 511a189b97SRussell King 520b05da72SHans Ulli Krollconfig MIGHT_HAVE_PCI 530b05da72SHans Ulli Kroll bool 540b05da72SHans Ulli Kroll 5575e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION 5675e7153aSRalf Baechle bool 5775e7153aSRalf Baechle 580a938b97SDavid Brownellconfig GENERIC_GPIO 590a938b97SDavid Brownell bool 600a938b97SDavid Brownell 615cfc8ee0SJohn Stultzconfig ARCH_USES_GETTIMEOFFSET 625cfc8ee0SJohn Stultz bool 635cfc8ee0SJohn Stultz default n 64746140c7SKevin Hilman 650567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS 660567a0c0SKevin Hilman bool 670567a0c0SKevin Hilman 68a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST 69a8655e83SCatalin Marinas bool 70a8655e83SCatalin Marinas depends on GENERIC_CLOCKEVENTS 715388a6b2SRussell King default y if SMP 72a8655e83SCatalin Marinas 73bf9dd360SRob Herringconfig KTIME_SCALAR 74bf9dd360SRob Herring bool 75bf9dd360SRob Herring default y 76bf9dd360SRob Herring 77bc581770SLinus Walleijconfig HAVE_TCM 78bc581770SLinus Walleij bool 79bc581770SLinus Walleij select GENERIC_ALLOCATOR 80bc581770SLinus Walleij 81e119bfffSRussell Kingconfig HAVE_PROC_CPU 82e119bfffSRussell King bool 83e119bfffSRussell King 845ea81769SAl Viroconfig NO_IOPORT 855ea81769SAl Viro bool 865ea81769SAl Viro 871da177e4SLinus Torvaldsconfig EISA 881da177e4SLinus Torvalds bool 891da177e4SLinus Torvalds ---help--- 901da177e4SLinus Torvalds The Extended Industry Standard Architecture (EISA) bus was 911da177e4SLinus Torvalds developed as an open alternative to the IBM MicroChannel bus. 921da177e4SLinus Torvalds 931da177e4SLinus Torvalds The EISA bus provided some of the features of the IBM MicroChannel 941da177e4SLinus Torvalds bus while maintaining backward compatibility with cards made for 951da177e4SLinus Torvalds the older ISA bus. The EISA bus saw limited use between 1988 and 961da177e4SLinus Torvalds 1995 when it was made obsolete by the PCI bus. 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds Say Y here if you are building a kernel for an EISA-based machine. 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds Otherwise, say N. 1011da177e4SLinus Torvalds 1021da177e4SLinus Torvaldsconfig SBUS 1031da177e4SLinus Torvalds bool 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvaldsconfig MCA 1061da177e4SLinus Torvalds bool 1071da177e4SLinus Torvalds help 1081da177e4SLinus Torvalds MicroChannel Architecture is found in some IBM PS/2 machines and 1091da177e4SLinus Torvalds laptops. It is a bus system similar to PCI or ISA. See 1101da177e4SLinus Torvalds <file:Documentation/mca.txt> (and especially the web page given 1111da177e4SLinus Torvalds there) before attempting to build an MCA bus kernel. 1121da177e4SLinus Torvalds 113f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT 114f16fb1ecSRussell King bool 115f16fb1ecSRussell King default y 116f16fb1ecSRussell King 117f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT 118f76e9154SNicolas Pitre bool 119f76e9154SNicolas Pitre depends on !SMP 120f76e9154SNicolas Pitre default y 121f76e9154SNicolas Pitre 122f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT 123f16fb1ecSRussell King bool 124f16fb1ecSRussell King default y 125f16fb1ecSRussell King 1267ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT 1277ad1bcb2SRussell King bool 1287ad1bcb2SRussell King default y 1297ad1bcb2SRussell King 1304a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND 1314a2581a0SThomas Gleixner bool 1324a2581a0SThomas Gleixner default y 1334a2581a0SThomas Gleixner 1344a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE 1354a2581a0SThomas Gleixner bool 1364a2581a0SThomas Gleixner default y 1374a2581a0SThomas Gleixner 13895c354feSNick Pigginconfig GENERIC_LOCKBREAK 13995c354feSNick Piggin bool 14095c354feSNick Piggin default y 14195c354feSNick Piggin depends on SMP && PREEMPT 14295c354feSNick Piggin 1431da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK 1441da177e4SLinus Torvalds bool 1451da177e4SLinus Torvalds default y 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM 1481da177e4SLinus Torvalds bool 1491da177e4SLinus Torvalds 150f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 151f0d1b0b3SDavid Howells bool 152f0d1b0b3SDavid Howells 153f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 154f0d1b0b3SDavid Howells bool 155f0d1b0b3SDavid Howells 15689c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ 15789c52ed4SBen Dooks bool 15889c52ed4SBen Dooks help 15989c52ed4SBen Dooks Internal node to signify that the ARCH has CPUFREQ support 16089c52ed4SBen Dooks and that the relevant menu configurations are displayed for 16189c52ed4SBen Dooks it. 16289c52ed4SBen Dooks 163c7b0aff4SKevin Hilmanconfig ARCH_HAS_CPU_IDLE_WAIT 164c7b0aff4SKevin Hilman def_bool y 165c7b0aff4SKevin Hilman 166b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT 167b89c3b16SAkinobu Mita bool 168b89c3b16SAkinobu Mita default y 169b89c3b16SAkinobu Mita 1701da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY 1711da177e4SLinus Torvalds bool 1721da177e4SLinus Torvalds default y 1731da177e4SLinus Torvalds 174a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC 175a08b6b79Sviro@ZenIV.linux.org.uk bool 176a08b6b79Sviro@ZenIV.linux.org.uk 1775ac6da66SChristoph Lameterconfig ZONE_DMA 1785ac6da66SChristoph Lameter bool 1795ac6da66SChristoph Lameter 180ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE 181ccd7ab7fSFUJITA Tomonori def_bool y 182ccd7ab7fSFUJITA Tomonori 18358af4a24SRob Herringconfig ARCH_HAS_DMA_SET_COHERENT_MASK 18458af4a24SRob Herring bool 18558af4a24SRob Herring 1861da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA 1871da177e4SLinus Torvalds bool 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvaldsconfig FIQ 1901da177e4SLinus Torvalds bool 1911da177e4SLinus Torvalds 19213a5045dSRob Herringconfig NEED_RET_TO_USER 19313a5045dSRob Herring bool 19413a5045dSRob Herring 195034d2f5aSAl Viroconfig ARCH_MTD_XIP 196034d2f5aSAl Viro bool 197034d2f5aSAl Viro 198c760fc19SHyok S. Choiconfig VECTORS_BASE 199c760fc19SHyok S. Choi hex 2006afd6faeSHyok S. Choi default 0xffff0000 if MMU || CPU_HIGH_VECTOR 201c760fc19SHyok S. Choi default DRAM_BASE if REMAP_VECTORS_TO_RAM 202c760fc19SHyok S. Choi default 0x00000000 203c760fc19SHyok S. Choi help 204c760fc19SHyok S. Choi The base address of exception vectors. 205c760fc19SHyok S. Choi 206dc21af99SRussell Kingconfig ARM_PATCH_PHYS_VIRT 207c1becedcSRussell King bool "Patch physical to virtual translations at runtime" if EMBEDDED 208c1becedcSRussell King default y 209b511d75dSNicolas Pitre depends on !XIP_KERNEL && MMU 210dc21af99SRussell King depends on !ARCH_REALVIEW || !SPARSEMEM 211dc21af99SRussell King help 212111e9a5cSRussell King Patch phys-to-virt and virt-to-phys translation functions at 213111e9a5cSRussell King boot and module load time according to the position of the 214111e9a5cSRussell King kernel in system memory. 215dc21af99SRussell King 216111e9a5cSRussell King This can only be used with non-XIP MMU kernels where the base 217daece596SNicolas Pitre of physical memory is at a 16MB boundary. 218dc21af99SRussell King 219c1becedcSRussell King Only disable this option if you know that you do not require 220c1becedcSRussell King this feature (eg, building a kernel for a single machine) and 221c1becedcSRussell King you need to shrink the kernel to the minimal size. 222c1becedcSRussell King 223c334bc15SRob Herringconfig NEED_MACH_IO_H 224c334bc15SRob Herring bool 225c334bc15SRob Herring help 226c334bc15SRob Herring Select this when mach/io.h is required to provide special 227c334bc15SRob Herring definitions for this platform. The need for mach/io.h should 228c334bc15SRob Herring be avoided when possible. 229c334bc15SRob Herring 2300cdc8b92SNicolas Pitreconfig NEED_MACH_MEMORY_H 2311b9f95f8SNicolas Pitre bool 232111e9a5cSRussell King help 2330cdc8b92SNicolas Pitre Select this when mach/memory.h is required to provide special 2340cdc8b92SNicolas Pitre definitions for this platform. The need for mach/memory.h should 2350cdc8b92SNicolas Pitre be avoided when possible. 2361b9f95f8SNicolas Pitre 2371b9f95f8SNicolas Pitreconfig PHYS_OFFSET 238974c0724SNicolas Pitre hex "Physical address of main memory" if MMU 2390cdc8b92SNicolas Pitre depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H 240974c0724SNicolas Pitre default DRAM_BASE if !MMU 2411b9f95f8SNicolas Pitre help 2421b9f95f8SNicolas Pitre Please provide the physical address corresponding to the 2431b9f95f8SNicolas Pitre location of main memory in your system. 244cada3c08SRussell King 24587e040b6SSimon Glassconfig GENERIC_BUG 24687e040b6SSimon Glass def_bool y 24787e040b6SSimon Glass depends on BUG 24887e040b6SSimon Glass 2491da177e4SLinus Torvaldssource "init/Kconfig" 2501da177e4SLinus Torvalds 251dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 252dc52ddc0SMatt Helsley 2531da177e4SLinus Torvaldsmenu "System Type" 2541da177e4SLinus Torvalds 2553c427975SHyok S. Choiconfig MMU 2563c427975SHyok S. Choi bool "MMU-based Paged Memory Management Support" 2573c427975SHyok S. Choi default y 2583c427975SHyok S. Choi help 2593c427975SHyok S. Choi Select if you want MMU-based virtualised addressing space 2603c427975SHyok S. Choi support by paged memory management. If unsure, say 'Y'. 2613c427975SHyok S. Choi 262ccf50e23SRussell King# 263ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option 264ccf50e23SRussell King# text. Please add new entries in the option alphabetic order. 265ccf50e23SRussell King# 2661da177e4SLinus Torvaldschoice 2671da177e4SLinus Torvalds prompt "ARM system type" 2686a0e2430SCatalin Marinas default ARCH_VERSATILE 2691da177e4SLinus Torvalds 2704af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR 2714af6fee1SDeepak Saxena bool "ARM Ltd. Integrator family" 2724af6fee1SDeepak Saxena select ARM_AMBA 27389c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 2746d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 275aa3831cfSKyungmin Park select HAVE_MACH_CLKDEV 2769904f793SLinus Walleij select HAVE_TCM 277c5a0adb5SRussell King select ICST 27813edd86dSRussell King select GENERIC_CLOCKEVENTS 279f4b8b319SRussell King select PLAT_VERSATILE 280c41b16f8SRussell King select PLAT_VERSATILE_FPGA_IRQ 281c334bc15SRob Herring select NEED_MACH_IO_H 2820cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 283695436e3SLinus Walleij select SPARSE_IRQ 2844af6fee1SDeepak Saxena help 2854af6fee1SDeepak Saxena Support for ARM's Integrator platform. 2864af6fee1SDeepak Saxena 2874af6fee1SDeepak Saxenaconfig ARCH_REALVIEW 2884af6fee1SDeepak Saxena bool "ARM Ltd. RealView family" 2894af6fee1SDeepak Saxena select ARM_AMBA 2906d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 291aa3831cfSKyungmin Park select HAVE_MACH_CLKDEV 292c5a0adb5SRussell King select ICST 293ae30ceacSCatalin Marinas select GENERIC_CLOCKEVENTS 294eb7fffa3SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 295f4b8b319SRussell King select PLAT_VERSATILE 2963cb5ee49SRussell King select PLAT_VERSATILE_CLCD 297e3887714SRussell King select ARM_TIMER_SP804 298b56ba8aaSColin Tuckley select GPIO_PL061 if GPIOLIB 2990cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 3004af6fee1SDeepak Saxena help 3014af6fee1SDeepak Saxena This enables support for ARM Ltd RealView boards. 3024af6fee1SDeepak Saxena 3034af6fee1SDeepak Saxenaconfig ARCH_VERSATILE 3044af6fee1SDeepak Saxena bool "ARM Ltd. Versatile family" 3054af6fee1SDeepak Saxena select ARM_AMBA 3064af6fee1SDeepak Saxena select ARM_VIC 3076d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 308aa3831cfSKyungmin Park select HAVE_MACH_CLKDEV 309c5a0adb5SRussell King select ICST 31089df1272SKevin Hilman select GENERIC_CLOCKEVENTS 311bbeddc43SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 312f4b8b319SRussell King select PLAT_VERSATILE 3133414ba8cSRussell King select PLAT_VERSATILE_CLCD 314c41b16f8SRussell King select PLAT_VERSATILE_FPGA_IRQ 315e3887714SRussell King select ARM_TIMER_SP804 3164af6fee1SDeepak Saxena help 3174af6fee1SDeepak Saxena This enables support for ARM Ltd Versatile board. 3184af6fee1SDeepak Saxena 319ceade897SRussell Kingconfig ARCH_VEXPRESS 320ceade897SRussell King bool "ARM Ltd. Versatile Express family" 321ceade897SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 322ceade897SRussell King select ARM_AMBA 323ceade897SRussell King select ARM_TIMER_SP804 3246d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 325aa3831cfSKyungmin Park select HAVE_MACH_CLKDEV 326ceade897SRussell King select GENERIC_CLOCKEVENTS 327ceade897SRussell King select HAVE_CLK 32895c34f83SNick Bowler select HAVE_PATA_PLATFORM 329ceade897SRussell King select ICST 330ba81f502SRussell King select NO_IOPORT 331ceade897SRussell King select PLAT_VERSATILE 3320fb44b91SRussell King select PLAT_VERSATILE_CLCD 333ceade897SRussell King help 334ceade897SRussell King This enables support for the ARM Ltd Versatile Express boards. 335ceade897SRussell King 3368fc5ffa0SAndrew Victorconfig ARCH_AT91 3378fc5ffa0SAndrew Victor bool "Atmel AT91" 338f373e8c0SRyan Mallon select ARCH_REQUIRE_GPIOLIB 33993686ae8SDavid Brownell select HAVE_CLK 340bd602995SJean-Christophe PLAGNIOL-VILLARD select CLKDEV_LOOKUP 341e261501dSNicolas Ferre select IRQ_DOMAIN 3421ac02d79SRob Herring select NEED_MACH_IO_H if PCCARD 3434af6fee1SDeepak Saxena help 3442b3b3516SAndrew Victor This enables support for systems based on the Atmel AT91RM9200, 3459918ceafSJean-Christophe PLAGNIOL-VILLARD AT91SAM9 processors. 3464af6fee1SDeepak Saxena 347ccf50e23SRussell Kingconfig ARCH_BCMRING 348ccf50e23SRussell King bool "Broadcom BCMRING" 349ccf50e23SRussell King depends on MMU 350ccf50e23SRussell King select CPU_V6 351ccf50e23SRussell King select ARM_AMBA 35282d63734SRussell King select ARM_TIMER_SP804 3536d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 354ccf50e23SRussell King select GENERIC_CLOCKEVENTS 355ccf50e23SRussell King select ARCH_WANT_OPTIONAL_GPIOLIB 356ccf50e23SRussell King help 357ccf50e23SRussell King Support for Broadcom's BCMRing platform. 358ccf50e23SRussell King 359220e6cf7SRob Herringconfig ARCH_HIGHBANK 360220e6cf7SRob Herring bool "Calxeda Highbank-based" 361220e6cf7SRob Herring select ARCH_WANT_OPTIONAL_GPIOLIB 362220e6cf7SRob Herring select ARM_AMBA 363220e6cf7SRob Herring select ARM_GIC 364220e6cf7SRob Herring select ARM_TIMER_SP804 36522d80379SDave Martin select CACHE_L2X0 366220e6cf7SRob Herring select CLKDEV_LOOKUP 367220e6cf7SRob Herring select CPU_V7 368220e6cf7SRob Herring select GENERIC_CLOCKEVENTS 369220e6cf7SRob Herring select HAVE_ARM_SCU 3703b55658aSDave Martin select HAVE_SMP 371fdfa64a4SRob Herring select SPARSE_IRQ 372220e6cf7SRob Herring select USE_OF 373220e6cf7SRob Herring help 374220e6cf7SRob Herring Support for the Calxeda Highbank SoC based boards. 375220e6cf7SRob Herring 3761da177e4SLinus Torvaldsconfig ARCH_CLPS711X 3774af6fee1SDeepak Saxena bool "Cirrus Logic CLPS711x/EP721x-based" 378c750815eSRussell King select CPU_ARM720T 3795cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 3800cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 381f999b8bdSMartin Michlmayr help 382f999b8bdSMartin Michlmayr Support for Cirrus Logic 711x/721x based boards. 3831da177e4SLinus Torvalds 384d94f944eSAnton Vorontsovconfig ARCH_CNS3XXX 385d94f944eSAnton Vorontsov bool "Cavium Networks CNS3XXX family" 38600d2711dSImre Kaloz select CPU_V6K 387d94f944eSAnton Vorontsov select GENERIC_CLOCKEVENTS 388d94f944eSAnton Vorontsov select ARM_GIC 389ce5ea9f3SDave Martin select MIGHT_HAVE_CACHE_L2X0 3900b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 3915f32f7a0SAnton Vorontsov select PCI_DOMAINS if PCI 392d94f944eSAnton Vorontsov help 393d94f944eSAnton Vorontsov Support for Cavium Networks CNS3XXX platform. 394d94f944eSAnton Vorontsov 395788c9700SRussell Kingconfig ARCH_GEMINI 396788c9700SRussell King bool "Cortina Systems Gemini" 397788c9700SRussell King select CPU_FA526 398788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 3995cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 400788c9700SRussell King help 401788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 402788c9700SRussell King 4033a6cb8ceSArnd Bergmannconfig ARCH_PRIMA2 4043a6cb8ceSArnd Bergmann bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform" 4053a6cb8ceSArnd Bergmann select CPU_V7 4063a6cb8ceSArnd Bergmann select NO_IOPORT 4073a6cb8ceSArnd Bergmann select GENERIC_CLOCKEVENTS 4083a6cb8ceSArnd Bergmann select CLKDEV_LOOKUP 4093a6cb8ceSArnd Bergmann select GENERIC_IRQ_CHIP 410ce5ea9f3SDave Martin select MIGHT_HAVE_CACHE_L2X0 4113a6cb8ceSArnd Bergmann select USE_OF 4123a6cb8ceSArnd Bergmann select ZONE_DMA 4133a6cb8ceSArnd Bergmann help 4143a6cb8ceSArnd Bergmann Support for CSR SiRFSoC ARM Cortex A9 Platform 4153a6cb8ceSArnd Bergmann 4161da177e4SLinus Torvaldsconfig ARCH_EBSA110 4171da177e4SLinus Torvalds bool "EBSA-110" 418c750815eSRussell King select CPU_SA110 419f7e68bbfSRussell King select ISA 420c5eb2a2bSRussell King select NO_IOPORT 4215cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 422c334bc15SRob Herring select NEED_MACH_IO_H 4230cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 4241da177e4SLinus Torvalds help 4251da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 426f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 4271da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 4281da177e4SLinus Torvalds parallel port. 4291da177e4SLinus Torvalds 430e7736d47SLennert Buytenhekconfig ARCH_EP93XX 431e7736d47SLennert Buytenhek bool "EP93xx-based" 432c750815eSRussell King select CPU_ARM920T 433e7736d47SLennert Buytenhek select ARM_AMBA 434e7736d47SLennert Buytenhek select ARM_VIC 4356d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 4367444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 437eb33575cSMel Gorman select ARCH_HAS_HOLES_MEMORYMODEL 4385cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 4395725aeaeSArnd Bergmann select NEED_MACH_MEMORY_H 440e7736d47SLennert Buytenhek help 441e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 442e7736d47SLennert Buytenhek 4431da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 4441da177e4SLinus Torvalds bool "FootBridge" 445c750815eSRussell King select CPU_SA110 4461da177e4SLinus Torvalds select FOOTBRIDGE 4474e8d7637SRussell King select GENERIC_CLOCKEVENTS 448d0ee9f40SArnd Bergmann select HAVE_IDE 449c334bc15SRob Herring select NEED_MACH_IO_H 4500cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 451f999b8bdSMartin Michlmayr help 452f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 453f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 4541da177e4SLinus Torvalds 455788c9700SRussell Kingconfig ARCH_MXC 456788c9700SRussell King bool "Freescale MXC/iMX-based" 457788c9700SRussell King select GENERIC_CLOCKEVENTS 458788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 4596d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 460234b6cedSRussell King select CLKSRC_MMIO 4618b6c44f1SShawn Guo select GENERIC_IRQ_CHIP 462ffa2ea3fSSascha Hauer select MULTI_IRQ_HANDLER 463788c9700SRussell King help 464788c9700SRussell King Support for Freescale MXC/iMX-based family of processors 465788c9700SRussell King 4661d3f33d5SShawn Guoconfig ARCH_MXS 4671d3f33d5SShawn Guo bool "Freescale MXS-based" 4681d3f33d5SShawn Guo select GENERIC_CLOCKEVENTS 4691d3f33d5SShawn Guo select ARCH_REQUIRE_GPIOLIB 470b9214b97SSascha Hauer select CLKDEV_LOOKUP 4715c61ddcfSRussell King select CLKSRC_MMIO 4726abda3e1SShawn Guo select HAVE_CLK_PREPARE 4731d3f33d5SShawn Guo help 4741d3f33d5SShawn Guo Support for Freescale MXS-based family of processors 4751d3f33d5SShawn Guo 4764af6fee1SDeepak Saxenaconfig ARCH_NETX 4774af6fee1SDeepak Saxena bool "Hilscher NetX based" 478234b6cedSRussell King select CLKSRC_MMIO 479c750815eSRussell King select CPU_ARM926T 4804af6fee1SDeepak Saxena select ARM_VIC 4812fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 482f999b8bdSMartin Michlmayr help 4834af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 4844af6fee1SDeepak Saxena 4854af6fee1SDeepak Saxenaconfig ARCH_H720X 4864af6fee1SDeepak Saxena bool "Hynix HMS720x-based" 487c750815eSRussell King select CPU_ARM720T 4884af6fee1SDeepak Saxena select ISA_DMA_API 4895cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 4904af6fee1SDeepak Saxena help 4914af6fee1SDeepak Saxena This enables support for systems based on the Hynix HMS720x 4924af6fee1SDeepak Saxena 4933b938be6SRussell Kingconfig ARCH_IOP13XX 4943b938be6SRussell King bool "IOP13xx-based" 4953b938be6SRussell King depends on MMU 496c750815eSRussell King select CPU_XSC3 4973b938be6SRussell King select PLAT_IOP 4983b938be6SRussell King select PCI 4993b938be6SRussell King select ARCH_SUPPORTS_MSI 5008d5796d2SLennert Buytenhek select VMSPLIT_1G 501c334bc15SRob Herring select NEED_MACH_IO_H 5020cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 50313a5045dSRob Herring select NEED_RET_TO_USER 5043b938be6SRussell King help 5053b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 5063b938be6SRussell King 5073f7e5815SLennert Buytenhekconfig ARCH_IOP32X 5083f7e5815SLennert Buytenhek bool "IOP32x-based" 509a4f7e763SRussell King depends on MMU 510c750815eSRussell King select CPU_XSCALE 511c334bc15SRob Herring select NEED_MACH_IO_H 51213a5045dSRob Herring select NEED_RET_TO_USER 5137ae1f7ecSLennert Buytenhek select PLAT_IOP 514f7e68bbfSRussell King select PCI 515bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 516f999b8bdSMartin Michlmayr help 5173f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 5183f7e5815SLennert Buytenhek processors. 5193f7e5815SLennert Buytenhek 5203f7e5815SLennert Buytenhekconfig ARCH_IOP33X 5213f7e5815SLennert Buytenhek bool "IOP33x-based" 5223f7e5815SLennert Buytenhek depends on MMU 523c750815eSRussell King select CPU_XSCALE 524c334bc15SRob Herring select NEED_MACH_IO_H 52513a5045dSRob Herring select NEED_RET_TO_USER 5267ae1f7ecSLennert Buytenhek select PLAT_IOP 5273f7e5815SLennert Buytenhek select PCI 528bb2b180cSRussell King select ARCH_REQUIRE_GPIOLIB 5293f7e5815SLennert Buytenhek help 5303f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 5311da177e4SLinus Torvalds 5323b938be6SRussell Kingconfig ARCH_IXP23XX 5333b938be6SRussell King bool "IXP23XX-based" 534588ef769SDan Williams depends on MMU 535c750815eSRussell King select CPU_XSC3 536285f5fa7SDan Williams select PCI 5375cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 538c334bc15SRob Herring select NEED_MACH_IO_H 5390cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 540285f5fa7SDan Williams help 5413b938be6SRussell King Support for Intel's IXP23xx (XScale) family of processors. 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvaldsconfig ARCH_IXP2000 5441da177e4SLinus Torvalds bool "IXP2400/2800-based" 545a4f7e763SRussell King depends on MMU 546c750815eSRussell King select CPU_XSCALE 547f7e68bbfSRussell King select PCI 5485cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 549c334bc15SRob Herring select NEED_MACH_IO_H 5500cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 551f999b8bdSMartin Michlmayr help 552f999b8bdSMartin Michlmayr Support for Intel's IXP2400/2800 (XScale) family of processors. 5531da177e4SLinus Torvalds 5543b938be6SRussell Kingconfig ARCH_IXP4XX 5553b938be6SRussell King bool "IXP4xx-based" 556a4f7e763SRussell King depends on MMU 55758af4a24SRob Herring select ARCH_HAS_DMA_SET_COHERENT_MASK 558234b6cedSRussell King select CLKSRC_MMIO 559c750815eSRussell King select CPU_XSCALE 5608858e9afSMilan Svoboda select GENERIC_GPIO 5613b938be6SRussell King select GENERIC_CLOCKEVENTS 5620b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 563c334bc15SRob Herring select NEED_MACH_IO_H 564485bdde7SRussell King select DMABOUNCE if PCI 565c4713074SLennert Buytenhek help 5663b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 567c4713074SLennert Buytenhek 568edabd38eSSaeed Bisharaconfig ARCH_DOVE 569edabd38eSSaeed Bishara bool "Marvell Dove" 5707b769bb3SKonstantin Porotchkin select CPU_V7 571edabd38eSSaeed Bishara select PCI 572edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 573edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 574c334bc15SRob Herring select NEED_MACH_IO_H 575edabd38eSSaeed Bishara select PLAT_ORION 576edabd38eSSaeed Bishara help 577edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 578edabd38eSSaeed Bishara 579651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD 580651c74c7SSaeed Bishara bool "Marvell Kirkwood" 581c750815eSRussell King select CPU_FEROCEON 582651c74c7SSaeed Bishara select PCI 583a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 584651c74c7SSaeed Bishara select GENERIC_CLOCKEVENTS 585c334bc15SRob Herring select NEED_MACH_IO_H 586651c74c7SSaeed Bishara select PLAT_ORION 587651c74c7SSaeed Bishara help 588651c74c7SSaeed Bishara Support for the following Marvell Kirkwood series SoCs: 589651c74c7SSaeed Bishara 88F6180, 88F6192 and 88F6281. 590651c74c7SSaeed Bishara 59140805949SKevin Wellsconfig ARCH_LPC32XX 59240805949SKevin Wells bool "NXP LPC32XX" 593234b6cedSRussell King select CLKSRC_MMIO 59440805949SKevin Wells select CPU_ARM926T 59540805949SKevin Wells select ARCH_REQUIRE_GPIOLIB 59640805949SKevin Wells select HAVE_IDE 59740805949SKevin Wells select ARM_AMBA 59840805949SKevin Wells select USB_ARCH_HAS_OHCI 5996d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 60040805949SKevin Wells select GENERIC_CLOCKEVENTS 60140805949SKevin Wells help 60240805949SKevin Wells Support for the NXP LPC32XX family of processors 60340805949SKevin Wells 604788c9700SRussell Kingconfig ARCH_MV78XX0 605788c9700SRussell King bool "Marvell MV78xx0" 606788c9700SRussell King select CPU_FEROCEON 607788c9700SRussell King select PCI 608a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 609788c9700SRussell King select GENERIC_CLOCKEVENTS 610c334bc15SRob Herring select NEED_MACH_IO_H 611788c9700SRussell King select PLAT_ORION 612788c9700SRussell King help 613788c9700SRussell King Support for the following Marvell MV78xx0 series SoCs: 614788c9700SRussell King MV781x0, MV782x0. 615788c9700SRussell King 616788c9700SRussell Kingconfig ARCH_ORION5X 617788c9700SRussell King bool "Marvell Orion" 618788c9700SRussell King depends on MMU 619788c9700SRussell King select CPU_FEROCEON 620788c9700SRussell King select PCI 621a8865655SErik Benada select ARCH_REQUIRE_GPIOLIB 622788c9700SRussell King select GENERIC_CLOCKEVENTS 623788c9700SRussell King select PLAT_ORION 624788c9700SRussell King help 625788c9700SRussell King Support for the following Marvell Orion 5x series SoCs: 626788c9700SRussell King Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), 627788c9700SRussell King Orion-2 (5281), Orion-1-90 (6183). 628788c9700SRussell King 629788c9700SRussell Kingconfig ARCH_MMP 6302f7e8faeSHaojian Zhuang bool "Marvell PXA168/910/MMP2" 631788c9700SRussell King depends on MMU 632788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 6336d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 634788c9700SRussell King select GENERIC_CLOCKEVENTS 635157d2644SHaojian Zhuang select GPIO_PXA 636788c9700SRussell King select TICK_ONESHOT 637788c9700SRussell King select PLAT_PXA 6380bd86961SHaojian Zhuang select SPARSE_IRQ 6393c7241bdSLeo Yan select GENERIC_ALLOCATOR 640788c9700SRussell King help 6412f7e8faeSHaojian Zhuang Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. 642788c9700SRussell King 643c53c9cf6SAndrew Victorconfig ARCH_KS8695 644c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 645c750815eSRussell King select CPU_ARM922T 64672880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 6475cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 6480cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 649c53c9cf6SAndrew Victor help 650c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 651c53c9cf6SAndrew Victor System-on-Chip devices. 652c53c9cf6SAndrew Victor 653788c9700SRussell Kingconfig ARCH_W90X900 654788c9700SRussell King bool "Nuvoton W90X900 CPU" 655788c9700SRussell King select CPU_ARM926T 656c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 6576d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 6586fa5d5f7SRussell King select CLKSRC_MMIO 65958b5369eSwanzongshun select GENERIC_CLOCKEVENTS 660777f9bebSLennert Buytenhek help 661a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 662a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 663a8bc4eadSwanzongshun the ARM series product line, you can login the following 664a8bc4eadSwanzongshun link address to know more. 665a8bc4eadSwanzongshun 666a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 667a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 668585cf175STzachi Perelstein 669c5f80065SErik Gillingconfig ARCH_TEGRA 670c5f80065SErik Gilling bool "NVIDIA Tegra" 6714073723aSRussell King select CLKDEV_LOOKUP 672234b6cedSRussell King select CLKSRC_MMIO 673c5f80065SErik Gilling select GENERIC_CLOCKEVENTS 674c5f80065SErik Gilling select GENERIC_GPIO 675c5f80065SErik Gilling select HAVE_CLK 6763b55658aSDave Martin select HAVE_SMP 677ce5ea9f3SDave Martin select MIGHT_HAVE_CACHE_L2X0 678c334bc15SRob Herring select NEED_MACH_IO_H if PCI 6797056d423SColin Cross select ARCH_HAS_CPUFREQ 680c5f80065SErik Gilling help 681c5f80065SErik Gilling This enables support for NVIDIA Tegra based systems (Tegra APX, 682c5f80065SErik Gilling Tegra 6xx and Tegra 2 series). 683c5f80065SErik Gilling 684af75655cSJamie Ilesconfig ARCH_PICOXCELL 685af75655cSJamie Iles bool "Picochip picoXcell" 686af75655cSJamie Iles select ARCH_REQUIRE_GPIOLIB 687af75655cSJamie Iles select ARM_PATCH_PHYS_VIRT 688af75655cSJamie Iles select ARM_VIC 689af75655cSJamie Iles select CPU_V6K 690af75655cSJamie Iles select DW_APB_TIMER 691af75655cSJamie Iles select GENERIC_CLOCKEVENTS 692af75655cSJamie Iles select GENERIC_GPIO 693af75655cSJamie Iles select HAVE_TCM 694af75655cSJamie Iles select NO_IOPORT 69598e27a5cSJamie Iles select SPARSE_IRQ 696af75655cSJamie Iles select USE_OF 697af75655cSJamie Iles help 698af75655cSJamie Iles This enables support for systems based on the Picochip picoXcell 699af75655cSJamie Iles family of Femtocell devices. The picoxcell support requires device tree 700af75655cSJamie Iles for all boards. 701af75655cSJamie Iles 7024af6fee1SDeepak Saxenaconfig ARCH_PNX4008 7034af6fee1SDeepak Saxena bool "Philips Nexperia PNX4008 Mobile" 704c750815eSRussell King select CPU_ARM926T 7056d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 7065cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 7074af6fee1SDeepak Saxena help 7084af6fee1SDeepak Saxena This enables support for Philips PNX4008 mobile platform. 7094af6fee1SDeepak Saxena 7101da177e4SLinus Torvaldsconfig ARCH_PXA 7112c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 712a4f7e763SRussell King depends on MMU 713034d2f5aSAl Viro select ARCH_MTD_XIP 71489c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 7156d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 716234b6cedSRussell King select CLKSRC_MMIO 7177444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 718981d0f39SEric Miao select GENERIC_CLOCKEVENTS 719157d2644SHaojian Zhuang select GPIO_PXA 720a88264c2SRussell King select TICK_ONESHOT 721bd5ce433SEric Miao select PLAT_PXA 7226ac6b817SHaojian Zhuang select SPARSE_IRQ 7234e234cc0SEric Miao select AUTO_ZRELADDR 7248a97ae2fSEric Miao select MULTI_IRQ_HANDLER 72515e0d9e3SArnd Bergmann select ARM_CPU_SUSPEND if PM 726d0ee9f40SArnd Bergmann select HAVE_IDE 727f999b8bdSMartin Michlmayr help 7282c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 7291da177e4SLinus Torvalds 730788c9700SRussell Kingconfig ARCH_MSM 731788c9700SRussell King bool "Qualcomm MSM" 7324b536b8dSSteve Muckle select HAVE_CLK 73349cbe786SEric Miao select GENERIC_CLOCKEVENTS 734923a081cSPavel Machek select ARCH_REQUIRE_GPIOLIB 735bd32344aSStephen Boyd select CLKDEV_LOOKUP 73649cbe786SEric Miao help 7374b53eb4fSDaniel Walker Support for Qualcomm MSM/QSD based systems. This runs on the 7384b53eb4fSDaniel Walker apps processor of the MSM/QSD and depends on a shared memory 7394b53eb4fSDaniel Walker interface to the modem processor which runs the baseband 7404b53eb4fSDaniel Walker stack and controls some vital subsystems 7414b53eb4fSDaniel Walker (clock and power control, etc). 74249cbe786SEric Miao 743c793c1b0SMagnus Dammconfig ARCH_SHMOBILE 7446d72ad35SPaul Mundt bool "Renesas SH-Mobile / R-Mobile" 7456d72ad35SPaul Mundt select HAVE_CLK 7465e93c6b4SPaul Mundt select CLKDEV_LOOKUP 747aa3831cfSKyungmin Park select HAVE_MACH_CLKDEV 7483b55658aSDave Martin select HAVE_SMP 7496d72ad35SPaul Mundt select GENERIC_CLOCKEVENTS 750ce5ea9f3SDave Martin select MIGHT_HAVE_CACHE_L2X0 7516d72ad35SPaul Mundt select NO_IOPORT 7526d72ad35SPaul Mundt select SPARSE_IRQ 75360f1435cSMagnus Damm select MULTI_IRQ_HANDLER 754e3e01091SRafael J. Wysocki select PM_GENERIC_DOMAINS if PM 7550cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 756c793c1b0SMagnus Damm help 7576d72ad35SPaul Mundt Support for Renesas's SH-Mobile and R-Mobile ARM platforms. 758c793c1b0SMagnus Damm 7591da177e4SLinus Torvaldsconfig ARCH_RPC 7601da177e4SLinus Torvalds bool "RiscPC" 7611da177e4SLinus Torvalds select ARCH_ACORN 7621da177e4SLinus Torvalds select FIQ 763a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 764341eb781SBen Dooks select HAVE_PATA_PLATFORM 765065909b9SRussell King select ISA_DMA_API 7665ea81769SAl Viro select NO_IOPORT 76707f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 7685cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 769d0ee9f40SArnd Bergmann select HAVE_IDE 770c334bc15SRob Herring select NEED_MACH_IO_H 7710cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 7721da177e4SLinus Torvalds help 7731da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 7741da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 7751da177e4SLinus Torvalds 7761da177e4SLinus Torvaldsconfig ARCH_SA1100 7771da177e4SLinus Torvalds bool "SA1100-based" 778234b6cedSRussell King select CLKSRC_MMIO 779c750815eSRussell King select CPU_SA1100 780f7e68bbfSRussell King select ISA 78105944d74SRussell King select ARCH_SPARSEMEM_ENABLE 782034d2f5aSAl Viro select ARCH_MTD_XIP 78389c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 7841937f5b9SRussell King select CPU_FREQ 7853e238be2SRussell King select GENERIC_CLOCKEVENTS 7864a8f8340SJett.Zhou select CLKDEV_LOOKUP 7873e238be2SRussell King select TICK_ONESHOT 7887444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 789d0ee9f40SArnd Bergmann select HAVE_IDE 7900cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 791375dec92SRussell King select SPARSE_IRQ 792f999b8bdSMartin Michlmayr help 793f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 7941da177e4SLinus Torvalds 795b130d5c2SKukjin Kimconfig ARCH_S3C24XX 796b130d5c2SKukjin Kim bool "Samsung S3C24XX SoCs" 7970a938b97SDavid Brownell select GENERIC_GPIO 7989d56c02aSBen Dooks select ARCH_HAS_CPUFREQ 7999483a578SDavid Brownell select HAVE_CLK 800e83626f2SThomas Abraham select CLKDEV_LOOKUP 8015cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 80220676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 803b130d5c2SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 804b130d5c2SKukjin Kim select HAVE_S3C2410_WATCHDOG if WATCHDOG 805c334bc15SRob Herring select NEED_MACH_IO_H 8061da177e4SLinus Torvalds help 807b130d5c2SKukjin Kim Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 808b130d5c2SKukjin Kim and S3C2450 SoCs based systems, such as the Simtec Electronics BAST 809b130d5c2SKukjin Kim (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the 810b130d5c2SKukjin Kim Samsung SMDK2410 development board (and derivatives). 81163b1f51bSBen Dooks 812a08ab637SBen Dooksconfig ARCH_S3C64XX 813a08ab637SBen Dooks bool "Samsung S3C64XX" 81489f1fa08SBen Dooks select PLAT_SAMSUNG 81589f0ce72SBen Dooks select CPU_V6 81689f0ce72SBen Dooks select ARM_VIC 817a08ab637SBen Dooks select HAVE_CLK 8186700397aSMark Brown select HAVE_TCM 819226e85f4SThomas Abraham select CLKDEV_LOOKUP 82089f0ce72SBen Dooks select NO_IOPORT 8215cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 82289c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 82389f0ce72SBen Dooks select ARCH_REQUIRE_GPIOLIB 82489f0ce72SBen Dooks select SAMSUNG_CLKSRC 82589f0ce72SBen Dooks select SAMSUNG_IRQ_VIC_TIMER 82689f0ce72SBen Dooks select S3C_GPIO_TRACK 82789f0ce72SBen Dooks select S3C_DEV_NAND 82889f0ce72SBen Dooks select USB_ARCH_HAS_OHCI 82989f0ce72SBen Dooks select SAMSUNG_GPIOLIB_4BIT 83020676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 831c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 832a08ab637SBen Dooks help 833a08ab637SBen Dooks Samsung S3C64XX series based systems 834a08ab637SBen Dooks 83549b7a491SKukjin Kimconfig ARCH_S5P64X0 83649b7a491SKukjin Kim bool "Samsung S5P6440 S5P6450" 837c4ffccddSKukjin Kim select CPU_V6 838c4ffccddSKukjin Kim select GENERIC_GPIO 839c4ffccddSKukjin Kim select HAVE_CLK 840d8b22d25SThomas Abraham select CLKDEV_LOOKUP 8410665ccc4SChanwoo Choi select CLKSRC_MMIO 842c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 8439e65bbf2SSangbeom Kim select GENERIC_CLOCKEVENTS 84420676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 845754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 846c4ffccddSKukjin Kim help 84749b7a491SKukjin Kim Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440, 84849b7a491SKukjin Kim SMDK6450. 849c4ffccddSKukjin Kim 850acc84707SMarek Szyprowskiconfig ARCH_S5PC100 851acc84707SMarek Szyprowski bool "Samsung S5PC100" 8525a7652f2SByungho Min select GENERIC_GPIO 8535a7652f2SByungho Min select HAVE_CLK 85429e8eb0fSThomas Abraham select CLKDEV_LOOKUP 8555a7652f2SByungho Min select CPU_V7 856925c68cdSBen Dooks select ARCH_USES_GETTIMEOFFSET 85720676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 858754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 859c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 8605a7652f2SByungho Min help 861acc84707SMarek Szyprowski Samsung S5PC100 series based systems 8625a7652f2SByungho Min 863170f4e42SKukjin Kimconfig ARCH_S5PV210 864170f4e42SKukjin Kim bool "Samsung S5PV210/S5PC110" 865170f4e42SKukjin Kim select CPU_V7 866eecb6a84SKyungmin Park select ARCH_SPARSEMEM_ENABLE 8670f75a96bSKamil Debski select ARCH_HAS_HOLES_MEMORYMODEL 868170f4e42SKukjin Kim select GENERIC_GPIO 869170f4e42SKukjin Kim select HAVE_CLK 870b2a9dd46SThomas Abraham select CLKDEV_LOOKUP 8710665ccc4SChanwoo Choi select CLKSRC_MMIO 872d8144aeaSJaecheol Lee select ARCH_HAS_CPUFREQ 8739e65bbf2SSangbeom Kim select GENERIC_CLOCKEVENTS 87420676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 875754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 876c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 8770cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 878170f4e42SKukjin Kim help 879170f4e42SKukjin Kim Samsung S5PV210/S5PC110 series based systems 880170f4e42SKukjin Kim 88183014579SKukjin Kimconfig ARCH_EXYNOS 88283014579SKukjin Kim bool "SAMSUNG EXYNOS" 883cc0e72b8SChanghwan Youn select CPU_V7 884f567fa6fSKyungmin Park select ARCH_SPARSEMEM_ENABLE 8850f75a96bSKamil Debski select ARCH_HAS_HOLES_MEMORYMODEL 886cc0e72b8SChanghwan Youn select GENERIC_GPIO 887cc0e72b8SChanghwan Youn select HAVE_CLK 888badc4f2dSThomas Abraham select CLKDEV_LOOKUP 889b333fb16SSunyoung Kang select ARCH_HAS_CPUFREQ 890cc0e72b8SChanghwan Youn select GENERIC_CLOCKEVENTS 891754961a8SKukjin Kim select HAVE_S3C_RTC if RTC_CLASS 89220676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 893c39d8d55SKyungmin Park select HAVE_S3C2410_WATCHDOG if WATCHDOG 8940cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 895cc0e72b8SChanghwan Youn help 89683014579SKukjin Kim Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5) 897cc0e72b8SChanghwan Youn 8981da177e4SLinus Torvaldsconfig ARCH_SHARK 8991da177e4SLinus Torvalds bool "Shark" 900c750815eSRussell King select CPU_SA110 901f7e68bbfSRussell King select ISA 902f7e68bbfSRussell King select ISA_DMA 9033bca103aSNicolas Pitre select ZONE_DMA 904f7e68bbfSRussell King select PCI 9055cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 9060cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 907c334bc15SRob Herring select NEED_MACH_IO_H 908f999b8bdSMartin Michlmayr help 909f999b8bdSMartin Michlmayr Support for the StrongARM based Digital DNARD machine, also known 910f999b8bdSMartin Michlmayr as "Shark" (<http://www.shark-linux.de/shark.html>). 9111da177e4SLinus Torvalds 912d98aac75SLinus Walleijconfig ARCH_U300 913d98aac75SLinus Walleij bool "ST-Ericsson U300 Series" 914d98aac75SLinus Walleij depends on MMU 915234b6cedSRussell King select CLKSRC_MMIO 916d98aac75SLinus Walleij select CPU_ARM926T 917bc581770SLinus Walleij select HAVE_TCM 918d98aac75SLinus Walleij select ARM_AMBA 9195485c1e0SLinus Walleij select ARM_PATCH_PHYS_VIRT 920d98aac75SLinus Walleij select ARM_VIC 921d98aac75SLinus Walleij select GENERIC_CLOCKEVENTS 9226d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 923aa3831cfSKyungmin Park select HAVE_MACH_CLKDEV 924d98aac75SLinus Walleij select GENERIC_GPIO 925cc890cd7SLinus Walleij select ARCH_REQUIRE_GPIOLIB 926d98aac75SLinus Walleij help 927d98aac75SLinus Walleij Support for ST-Ericsson U300 series mobile platforms. 928d98aac75SLinus Walleij 929ccf50e23SRussell Kingconfig ARCH_U8500 930ccf50e23SRussell King bool "ST-Ericsson U8500 Series" 93167ae14fcSArnd Bergmann depends on MMU 932ccf50e23SRussell King select CPU_V7 933ccf50e23SRussell King select ARM_AMBA 934ccf50e23SRussell King select GENERIC_CLOCKEVENTS 9356d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 93694bdc0e2SRabin Vincent select ARCH_REQUIRE_GPIOLIB 9377c1a70e9SMartin Persson select ARCH_HAS_CPUFREQ 9383b55658aSDave Martin select HAVE_SMP 939ce5ea9f3SDave Martin select MIGHT_HAVE_CACHE_L2X0 940ccf50e23SRussell King help 941ccf50e23SRussell King Support for ST-Ericsson's Ux500 architecture 942ccf50e23SRussell King 943ccf50e23SRussell Kingconfig ARCH_NOMADIK 944ccf50e23SRussell King bool "STMicroelectronics Nomadik" 945ccf50e23SRussell King select ARM_AMBA 946ccf50e23SRussell King select ARM_VIC 947ccf50e23SRussell King select CPU_ARM926T 9486d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 949ccf50e23SRussell King select GENERIC_CLOCKEVENTS 950ce5ea9f3SDave Martin select MIGHT_HAVE_CACHE_L2X0 951ccf50e23SRussell King select ARCH_REQUIRE_GPIOLIB 952ccf50e23SRussell King help 953ccf50e23SRussell King Support for the Nomadik platform by ST-Ericsson 954ccf50e23SRussell King 9557c6337e2SKevin Hilmanconfig ARCH_DAVINCI 9567c6337e2SKevin Hilman bool "TI DaVinci" 9577c6337e2SKevin Hilman select GENERIC_CLOCKEVENTS 958dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 9593bca103aSNicolas Pitre select ZONE_DMA 9609232fcc9SKevin Hilman select HAVE_IDE 9616d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 96220e9969bSDavid Brownell select GENERIC_ALLOCATOR 963dc7ad3b3SRussell King select GENERIC_IRQ_CHIP 964ae88e05aSSekhar Nori select ARCH_HAS_HOLES_MEMORYMODEL 9657c6337e2SKevin Hilman help 9667c6337e2SKevin Hilman Support for TI's DaVinci platform. 9677c6337e2SKevin Hilman 9683b938be6SRussell Kingconfig ARCH_OMAP 9693b938be6SRussell King bool "TI OMAP" 9709483a578SDavid Brownell select HAVE_CLK 9717444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 97289c52ed4SBen Dooks select ARCH_HAS_CPUFREQ 973354a183fSRussell King - ARM Linux select CLKSRC_MMIO 97406cad098SKevin Hilman select GENERIC_CLOCKEVENTS 9759af915daSSriram select ARCH_HAS_HOLES_MEMORYMODEL 9763b938be6SRussell King help 9776e457bb0SLennert Buytenhek Support for TI's OMAP platform (OMAP1/2/3/4). 9783b938be6SRussell King 979cee37e50Sviresh kumarconfig PLAT_SPEAR 980cee37e50Sviresh kumar bool "ST SPEAr" 981cee37e50Sviresh kumar select ARM_AMBA 982cee37e50Sviresh kumar select ARCH_REQUIRE_GPIOLIB 9836d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 984d6e15d78SRussell King select CLKSRC_MMIO 985cee37e50Sviresh kumar select GENERIC_CLOCKEVENTS 986cee37e50Sviresh kumar select HAVE_CLK 987cee37e50Sviresh kumar help 988cee37e50Sviresh kumar Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). 989cee37e50Sviresh kumar 99021f47fbcSAlexey Charkovconfig ARCH_VT8500 99121f47fbcSAlexey Charkov bool "VIA/WonderMedia 85xx" 99221f47fbcSAlexey Charkov select CPU_ARM926T 99321f47fbcSAlexey Charkov select GENERIC_GPIO 99421f47fbcSAlexey Charkov select ARCH_HAS_CPUFREQ 99521f47fbcSAlexey Charkov select GENERIC_CLOCKEVENTS 99621f47fbcSAlexey Charkov select ARCH_REQUIRE_GPIOLIB 99721f47fbcSAlexey Charkov select HAVE_PWM 99821f47fbcSAlexey Charkov help 99921f47fbcSAlexey Charkov Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip. 100002c981c0SBinghua Duan 1001b85a3ef4SJohn Linnconfig ARCH_ZYNQ 1002b85a3ef4SJohn Linn bool "Xilinx Zynq ARM Cortex A9 Platform" 100302c981c0SBinghua Duan select CPU_V7 100402c981c0SBinghua Duan select GENERIC_CLOCKEVENTS 100502c981c0SBinghua Duan select CLKDEV_LOOKUP 1006b85a3ef4SJohn Linn select ARM_GIC 1007b85a3ef4SJohn Linn select ARM_AMBA 1008b85a3ef4SJohn Linn select ICST 1009ce5ea9f3SDave Martin select MIGHT_HAVE_CACHE_L2X0 101002c981c0SBinghua Duan select USE_OF 101102c981c0SBinghua Duan help 1012b85a3ef4SJohn Linn Support for Xilinx Zynq ARM Cortex A9 Platform 10131da177e4SLinus Torvaldsendchoice 10141da177e4SLinus Torvalds 1015ccf50e23SRussell King# 1016ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname. However, plat-* 1017ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the 1018ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source. 1019ccf50e23SRussell King# 102095b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig" 102195b8f20fSRussell King 102295b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig" 102395b8f20fSRussell King 10241da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 10251da177e4SLinus Torvalds 1026d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig" 1027d94f944eSAnton Vorontsov 102895b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig" 102995b8f20fSRussell King 103095b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig" 103195b8f20fSRussell King 1032e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 1033e7736d47SLennert Buytenhek 10341da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 10351da177e4SLinus Torvalds 103659d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 103759d3a193SPaulius Zaleckas 103895b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig" 103995b8f20fSRussell King 10401da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 10411da177e4SLinus Torvalds 10423f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 10433f7e5815SLennert Buytenhek 10443f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 10451da177e4SLinus Torvalds 1046285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 1047285f5fa7SDan Williams 10481da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig" 10511da177e4SLinus Torvalds 1052c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig" 1053c4713074SLennert Buytenhek 105495b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig" 105595b8f20fSRussell King 105695b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig" 105795b8f20fSRussell King 105840805949SKevin Wellssource "arch/arm/mach-lpc32xx/Kconfig" 105940805949SKevin Wells 106095b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig" 106195b8f20fSRussell King 1062794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 1063794d15b2SStanislav Samsonov 106495b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig" 10651da177e4SLinus Torvalds 10661d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig" 10671d3f33d5SShawn Guo 106895b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig" 106949cbe786SEric Miao 107095b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig" 107195b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig" 107295b8f20fSRussell King 1073d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 1074d48af15eSTony Lindgren 1075d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 10761da177e4SLinus Torvalds 10771dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 10781dbae815STony Lindgren 10799dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 1080585cf175STzachi Perelstein 108195b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig" 108295b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig" 10831da177e4SLinus Torvalds 108495b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig" 108595b8f20fSRussell King 108695b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig" 108795b8f20fSRussell King 108895b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig" 1089edabd38eSSaeed Bishara 1090cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig" 1091a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig" 1092c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig" 1093a21765a7SBen Dooks 1094cee37e50Sviresh kumarsource "arch/arm/plat-spear/Kconfig" 1095a21765a7SBen Dooks 109685fd6d63SKukjin Kimsource "arch/arm/mach-s3c24xx/Kconfig" 1097b130d5c2SKukjin Kimif ARCH_S3C24XX 1098a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig" 1099a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig" 1100a21765a7SBen Dooksendif 11011da177e4SLinus Torvalds 1102a08ab637SBen Dooksif ARCH_S3C64XX 1103431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig" 1104a08ab637SBen Dooksendif 1105a08ab637SBen Dooks 110649b7a491SKukjin Kimsource "arch/arm/mach-s5p64x0/Kconfig" 1107c4ffccddSKukjin Kim 11085a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig" 11095a7652f2SByungho Min 1110170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig" 1111170f4e42SKukjin Kim 111283014579SKukjin Kimsource "arch/arm/mach-exynos/Kconfig" 1113cc0e72b8SChanghwan Youn 1114882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig" 11151da177e4SLinus Torvalds 1116c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig" 1117c5f80065SErik Gilling 111895b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig" 11191da177e4SLinus Torvalds 112095b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig" 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 11231da177e4SLinus Torvalds 1124ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig" 1125420c34e4SRussell Kingsource "arch/arm/plat-versatile/Kconfig" 1126ceade897SRussell King 112721f47fbcSAlexey Charkovsource "arch/arm/mach-vt8500/Kconfig" 112821f47fbcSAlexey Charkov 11297ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 11307ec80ddfSwanzongshun 11311da177e4SLinus Torvalds# Definitions to make life easier 11321da177e4SLinus Torvaldsconfig ARCH_ACORN 11331da177e4SLinus Torvalds bool 11341da177e4SLinus Torvalds 11357ae1f7ecSLennert Buytenhekconfig PLAT_IOP 11367ae1f7ecSLennert Buytenhek bool 1137469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 11387ae1f7ecSLennert Buytenhek 113969b02f6aSLennert Buytenhekconfig PLAT_ORION 114069b02f6aSLennert Buytenhek bool 1141bfe45e0bSRussell King select CLKSRC_MMIO 1142dc7ad3b3SRussell King select GENERIC_IRQ_CHIP 114369b02f6aSLennert Buytenhek 1144bd5ce433SEric Miaoconfig PLAT_PXA 1145bd5ce433SEric Miao bool 1146bd5ce433SEric Miao 1147f4b8b319SRussell Kingconfig PLAT_VERSATILE 1148f4b8b319SRussell King bool 1149f4b8b319SRussell King 1150e3887714SRussell Kingconfig ARM_TIMER_SP804 1151e3887714SRussell King bool 1152bfe45e0bSRussell King select CLKSRC_MMIO 1153a7bf6162SRob Herring select HAVE_SCHED_CLOCK 1154e3887714SRussell King 11551da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 11561da177e4SLinus Torvalds 1157958cab0fSRussell Kingconfig ARM_NR_BANKS 1158958cab0fSRussell King int 1159958cab0fSRussell King default 16 if ARCH_EP93XX 1160958cab0fSRussell King default 8 1161958cab0fSRussell King 1162afe4b25eSLennert Buytenhekconfig IWMMXT 1163afe4b25eSLennert Buytenhek bool "Enable iWMMXt support" 1164ef6c8445SHaojian Zhuang depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 1165ef6c8445SHaojian Zhuang default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP 1166afe4b25eSLennert Buytenhek help 1167afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 1168afe4b25eSLennert Buytenhek running on a CPU that supports it. 1169afe4b25eSLennert Buytenhek 11701da177e4SLinus Torvaldsconfig XSCALE_PMU 11711da177e4SLinus Torvalds bool 1172bfc994b5SPaul Bolle depends on CPU_XSCALE 11731da177e4SLinus Torvalds default y 11741da177e4SLinus Torvalds 11750f4f0672SJamie Ilesconfig CPU_HAS_PMU 1176e399b1a4SRussell King depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \ 11778954bb0dSWill Deacon (!ARCH_OMAP3 || OMAP3_EMU) 11780f4f0672SJamie Iles default y 11790f4f0672SJamie Iles bool 11800f4f0672SJamie Iles 118152108641Seric miaoconfig MULTI_IRQ_HANDLER 118252108641Seric miao bool 118352108641Seric miao help 118452108641Seric miao Allow each machine to specify it's own IRQ handler at run time. 118552108641Seric miao 11863b93e7b0SHyok S. Choiif !MMU 11873b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 11883b93e7b0SHyok S. Choiendif 11893b93e7b0SHyok S. Choi 1190f0c4b8d6SWill Deaconconfig ARM_ERRATA_326103 1191f0c4b8d6SWill Deacon bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory" 1192f0c4b8d6SWill Deacon depends on CPU_V6 1193f0c4b8d6SWill Deacon help 1194f0c4b8d6SWill Deacon Executing a SWP instruction to read-only memory does not set bit 11 1195f0c4b8d6SWill Deacon of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to 1196f0c4b8d6SWill Deacon treat the access as a read, preventing a COW from occurring and 1197f0c4b8d6SWill Deacon causing the faulting task to livelock. 1198f0c4b8d6SWill Deacon 11999cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 12009cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 1201e399b1a4SRussell King depends on CPU_V6 || CPU_V6K 12029cba3cccSCatalin Marinas help 12039cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 12049cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 12059cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 12069cba3cccSCatalin Marinas recommended workaround. 12079cba3cccSCatalin Marinas 12087ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 12097ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 12107ce236fcSCatalin Marinas depends on CPU_V7 12117ce236fcSCatalin Marinas help 12127ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 12137ce236fcSCatalin Marinas (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb 12147ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 12157ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 12167ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 12177ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 12187ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 12197ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 12207ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 12217ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 12227ce236fcSCatalin Marinas available in non-secure mode. 12237ce236fcSCatalin Marinas 1224855c551fSCatalin Marinasconfig ARM_ERRATA_458693 1225855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 1226855c551fSCatalin Marinas depends on CPU_V7 1227855c551fSCatalin Marinas help 1228855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 1229855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 1230855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 1231855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 1232855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 1233855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 1234855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 1235855c551fSCatalin Marinas register may not be available in non-secure mode. 1236855c551fSCatalin Marinas 12370516e464SCatalin Marinasconfig ARM_ERRATA_460075 12380516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 12390516e464SCatalin Marinas depends on CPU_V7 12400516e464SCatalin Marinas help 12410516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 12420516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 12430516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 12440516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 12450516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 12460516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 12470516e464SCatalin Marinas may not be available in non-secure mode. 12480516e464SCatalin Marinas 12499f05027cSWill Deaconconfig ARM_ERRATA_742230 12509f05027cSWill Deacon bool "ARM errata: DMB operation may be faulty" 12519f05027cSWill Deacon depends on CPU_V7 && SMP 12529f05027cSWill Deacon help 12539f05027cSWill Deacon This option enables the workaround for the 742230 Cortex-A9 12549f05027cSWill Deacon (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction 12559f05027cSWill Deacon between two write operations may not ensure the correct visibility 12569f05027cSWill Deacon ordering of the two writes. This workaround sets a specific bit in 12579f05027cSWill Deacon the diagnostic register of the Cortex-A9 which causes the DMB 12589f05027cSWill Deacon instruction to behave as a DSB, ensuring the correct behaviour of 12599f05027cSWill Deacon the two writes. 12609f05027cSWill Deacon 1261a672e99bSWill Deaconconfig ARM_ERRATA_742231 1262a672e99bSWill Deacon bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" 1263a672e99bSWill Deacon depends on CPU_V7 && SMP 1264a672e99bSWill Deacon help 1265a672e99bSWill Deacon This option enables the workaround for the 742231 Cortex-A9 1266a672e99bSWill Deacon (r2p0..r2p2) erratum. Under certain conditions, specific to the 1267a672e99bSWill Deacon Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode, 1268a672e99bSWill Deacon accessing some data located in the same cache line, may get corrupted 1269a672e99bSWill Deacon data due to bad handling of the address hazard when the line gets 1270a672e99bSWill Deacon replaced from one of the CPUs at the same time as another CPU is 1271a672e99bSWill Deacon accessing it. This workaround sets specific bits in the diagnostic 1272a672e99bSWill Deacon register of the Cortex-A9 which reduces the linefill issuing 1273a672e99bSWill Deacon capabilities of the processor. 1274a672e99bSWill Deacon 12759e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369 1276fa0ce403SWill Deacon bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines" 12772839e06cSSantosh Shilimkar depends on CACHE_L2X0 12789e65582aSSantosh Shilimkar help 12799e65582aSSantosh Shilimkar The PL310 L2 cache controller implements three types of Clean & 12809e65582aSSantosh Shilimkar Invalidate maintenance operations: by Physical Address 12819e65582aSSantosh Shilimkar (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). 12829e65582aSSantosh Shilimkar They are architecturally defined to behave as the execution of a 12839e65582aSSantosh Shilimkar clean operation followed immediately by an invalidate operation, 12849e65582aSSantosh Shilimkar both performing to the same memory location. This functionality 12859e65582aSSantosh Shilimkar is not correctly implemented in PL310 as clean lines are not 12862839e06cSSantosh Shilimkar invalidated as a result of these operations. 1287cdf357f1SWill Deacon 1288cdf357f1SWill Deaconconfig ARM_ERRATA_720789 1289cdf357f1SWill Deacon bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" 1290e66dc745SDave Martin depends on CPU_V7 1291cdf357f1SWill Deacon help 1292cdf357f1SWill Deacon This option enables the workaround for the 720789 Cortex-A9 (prior to 1293cdf357f1SWill Deacon r2p0) erratum. A faulty ASID can be sent to the other CPUs for the 1294cdf357f1SWill Deacon broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. 1295cdf357f1SWill Deacon As a consequence of this erratum, some TLB entries which should be 1296cdf357f1SWill Deacon invalidated are not, resulting in an incoherency in the system page 1297cdf357f1SWill Deacon tables. The workaround changes the TLB flushing routines to invalidate 1298cdf357f1SWill Deacon entries regardless of the ASID. 1299475d92fcSWill Deacon 13001f0090a1SRussell Kingconfig PL310_ERRATA_727915 1301fa0ce403SWill Deacon bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption" 13021f0090a1SRussell King depends on CACHE_L2X0 13031f0090a1SRussell King help 13041f0090a1SRussell King PL310 implements the Clean & Invalidate by Way L2 cache maintenance 13051f0090a1SRussell King operation (offset 0x7FC). This operation runs in background so that 13061f0090a1SRussell King PL310 can handle normal accesses while it is in progress. Under very 13071f0090a1SRussell King rare circumstances, due to this erratum, write data can be lost when 13081f0090a1SRussell King PL310 treats a cacheable write transaction during a Clean & 13091f0090a1SRussell King Invalidate by Way operation. 13101f0090a1SRussell King 1311475d92fcSWill Deaconconfig ARM_ERRATA_743622 1312475d92fcSWill Deacon bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" 1313475d92fcSWill Deacon depends on CPU_V7 1314475d92fcSWill Deacon help 1315475d92fcSWill Deacon This option enables the workaround for the 743622 Cortex-A9 1316efbc74acSWill Deacon (r2p*) erratum. Under very rare conditions, a faulty 1317475d92fcSWill Deacon optimisation in the Cortex-A9 Store Buffer may lead to data 1318475d92fcSWill Deacon corruption. This workaround sets a specific bit in the diagnostic 1319475d92fcSWill Deacon register of the Cortex-A9 which disables the Store Buffer 1320475d92fcSWill Deacon optimisation, preventing the defect from occurring. This has no 1321475d92fcSWill Deacon visible impact on the overall performance or power consumption of the 1322475d92fcSWill Deacon processor. 1323475d92fcSWill Deacon 13249a27c27cSWill Deaconconfig ARM_ERRATA_751472 13259a27c27cSWill Deacon bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation" 1326ba90c516SDave Martin depends on CPU_V7 13279a27c27cSWill Deacon help 13289a27c27cSWill Deacon This option enables the workaround for the 751472 Cortex-A9 (prior 13299a27c27cSWill Deacon to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the 13309a27c27cSWill Deacon completion of a following broadcasted operation if the second 13319a27c27cSWill Deacon operation is received by a CPU before the ICIALLUIS has completed, 13329a27c27cSWill Deacon potentially leading to corrupted entries in the cache or TLB. 13339a27c27cSWill Deacon 1334fa0ce403SWill Deaconconfig PL310_ERRATA_753970 1335fa0ce403SWill Deacon bool "PL310 errata: cache sync operation may be faulty" 1336885028e4SSrinidhi Kasagar depends on CACHE_PL310 1337885028e4SSrinidhi Kasagar help 1338885028e4SSrinidhi Kasagar This option enables the workaround for the 753970 PL310 (r3p0) erratum. 1339885028e4SSrinidhi Kasagar 1340885028e4SSrinidhi Kasagar Under some condition the effect of cache sync operation on 1341885028e4SSrinidhi Kasagar the store buffer still remains when the operation completes. 1342885028e4SSrinidhi Kasagar This means that the store buffer is always asked to drain and 1343885028e4SSrinidhi Kasagar this prevents it from merging any further writes. The workaround 1344885028e4SSrinidhi Kasagar is to replace the normal offset of cache sync operation (0x730) 1345885028e4SSrinidhi Kasagar by another offset targeting an unmapped PL310 register 0x740. 1346885028e4SSrinidhi Kasagar This has the same effect as the cache sync operation: store buffer 1347885028e4SSrinidhi Kasagar drain and waiting for all buffers empty. 1348885028e4SSrinidhi Kasagar 1349fcbdc5feSWill Deaconconfig ARM_ERRATA_754322 1350fcbdc5feSWill Deacon bool "ARM errata: possible faulty MMU translations following an ASID switch" 1351fcbdc5feSWill Deacon depends on CPU_V7 1352fcbdc5feSWill Deacon help 1353fcbdc5feSWill Deacon This option enables the workaround for the 754322 Cortex-A9 (r2p*, 1354fcbdc5feSWill Deacon r3p*) erratum. A speculative memory access may cause a page table walk 1355fcbdc5feSWill Deacon which starts prior to an ASID switch but completes afterwards. This 1356fcbdc5feSWill Deacon can populate the micro-TLB with a stale entry which may be hit with 1357fcbdc5feSWill Deacon the new ASID. This workaround places two dsb instructions in the mm 1358fcbdc5feSWill Deacon switching code so that no page table walks can cross the ASID switch. 1359fcbdc5feSWill Deacon 13605dab26afSWill Deaconconfig ARM_ERRATA_754327 13615dab26afSWill Deacon bool "ARM errata: no automatic Store Buffer drain" 13625dab26afSWill Deacon depends on CPU_V7 && SMP 13635dab26afSWill Deacon help 13645dab26afSWill Deacon This option enables the workaround for the 754327 Cortex-A9 (prior to 13655dab26afSWill Deacon r2p0) erratum. The Store Buffer does not have any automatic draining 13665dab26afSWill Deacon mechanism and therefore a livelock may occur if an external agent 13675dab26afSWill Deacon continuously polls a memory location waiting to observe an update. 13685dab26afSWill Deacon This workaround defines cpu_relax() as smp_mb(), preventing correctly 13695dab26afSWill Deacon written polling loops from denying visibility of updates to memory. 13705dab26afSWill Deacon 1371145e10e1SCatalin Marinasconfig ARM_ERRATA_364296 1372145e10e1SCatalin Marinas bool "ARM errata: Possible cache data corruption with hit-under-miss enabled" 1373145e10e1SCatalin Marinas depends on CPU_V6 && !SMP 1374145e10e1SCatalin Marinas help 1375145e10e1SCatalin Marinas This options enables the workaround for the 364296 ARM1136 1376145e10e1SCatalin Marinas r0p2 erratum (possible cache data corruption with 1377145e10e1SCatalin Marinas hit-under-miss enabled). It sets the undocumented bit 31 in 1378145e10e1SCatalin Marinas the auxiliary control register and the FI bit in the control 1379145e10e1SCatalin Marinas register, thus disabling hit-under-miss without putting the 1380145e10e1SCatalin Marinas processor into full low interrupt latency mode. ARM11MPCore 1381145e10e1SCatalin Marinas is not affected. 1382145e10e1SCatalin Marinas 1383f630c1bdSWill Deaconconfig ARM_ERRATA_764369 1384f630c1bdSWill Deacon bool "ARM errata: Data cache line maintenance operation by MVA may not succeed" 1385f630c1bdSWill Deacon depends on CPU_V7 && SMP 1386f630c1bdSWill Deacon help 1387f630c1bdSWill Deacon This option enables the workaround for erratum 764369 1388f630c1bdSWill Deacon affecting Cortex-A9 MPCore with two or more processors (all 1389f630c1bdSWill Deacon current revisions). Under certain timing circumstances, a data 1390f630c1bdSWill Deacon cache line maintenance operation by MVA targeting an Inner 1391f630c1bdSWill Deacon Shareable memory region may fail to proceed up to either the 1392f630c1bdSWill Deacon Point of Coherency or to the Point of Unification of the 1393f630c1bdSWill Deacon system. This workaround adds a DSB instruction before the 1394f630c1bdSWill Deacon relevant cache maintenance functions and sets a specific bit 1395f630c1bdSWill Deacon in the diagnostic control register of the SCU. 1396f630c1bdSWill Deacon 139711ed0ba1SWill Deaconconfig PL310_ERRATA_769419 139811ed0ba1SWill Deacon bool "PL310 errata: no automatic Store Buffer drain" 139911ed0ba1SWill Deacon depends on CACHE_L2X0 140011ed0ba1SWill Deacon help 140111ed0ba1SWill Deacon On revisions of the PL310 prior to r3p2, the Store Buffer does 140211ed0ba1SWill Deacon not automatically drain. This can cause normal, non-cacheable 140311ed0ba1SWill Deacon writes to be retained when the memory system is idle, leading 140411ed0ba1SWill Deacon to suboptimal I/O performance for drivers using coherent DMA. 140511ed0ba1SWill Deacon This option adds a write barrier to the cpu_idle loop so that, 140611ed0ba1SWill Deacon on systems with an outer cache, the store buffer is drained 140711ed0ba1SWill Deacon explicitly. 140811ed0ba1SWill Deacon 14091da177e4SLinus Torvaldsendmenu 14101da177e4SLinus Torvalds 14111da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 14121da177e4SLinus Torvalds 14131da177e4SLinus Torvaldsmenu "Bus support" 14141da177e4SLinus Torvalds 14151da177e4SLinus Torvaldsconfig ARM_AMBA 14161da177e4SLinus Torvalds bool 14171da177e4SLinus Torvalds 14181da177e4SLinus Torvaldsconfig ISA 14191da177e4SLinus Torvalds bool 14201da177e4SLinus Torvalds help 14211da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 14221da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 14231da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 14241da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 14251da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 14261da177e4SLinus Torvalds 1427065909b9SRussell King# Select ISA DMA controller support 14281da177e4SLinus Torvaldsconfig ISA_DMA 14291da177e4SLinus Torvalds bool 1430065909b9SRussell King select ISA_DMA_API 14311da177e4SLinus Torvalds 1432065909b9SRussell King# Select ISA DMA interface 14335cae841bSAl Viroconfig ISA_DMA_API 14345cae841bSAl Viro bool 14355cae841bSAl Viro 14361da177e4SLinus Torvaldsconfig PCI 14370b05da72SHans Ulli Kroll bool "PCI support" if MIGHT_HAVE_PCI 14381da177e4SLinus Torvalds help 14391da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 14401da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 14411da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 14421da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 14431da177e4SLinus Torvalds 144452882173SAnton Vorontsovconfig PCI_DOMAINS 144552882173SAnton Vorontsov bool 144652882173SAnton Vorontsov depends on PCI 144752882173SAnton Vorontsov 1448b080ac8aSMarcelo Roberto Jimenezconfig PCI_NANOENGINE 1449b080ac8aSMarcelo Roberto Jimenez bool "BSE nanoEngine PCI support" 1450b080ac8aSMarcelo Roberto Jimenez depends on SA1100_NANOENGINE 1451b080ac8aSMarcelo Roberto Jimenez help 1452b080ac8aSMarcelo Roberto Jimenez Enable PCI on the BSE nanoEngine board. 1453b080ac8aSMarcelo Roberto Jimenez 145436e23590SMatthew Wilcoxconfig PCI_SYSCALL 145536e23590SMatthew Wilcox def_bool PCI 145636e23590SMatthew Wilcox 14571da177e4SLinus Torvalds# Select the host bridge type 14581da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505 14591da177e4SLinus Torvalds bool 14601da177e4SLinus Torvalds depends on PCI && ARCH_SHARK 14611da177e4SLinus Torvalds default y 14621da177e4SLinus Torvalds 1463a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 1464a0113a99SMike Rapoport bool 1465a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 1466a0113a99SMike Rapoport default y 1467a0113a99SMike Rapoport select DMABOUNCE 1468a0113a99SMike Rapoport 14691da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 14721da177e4SLinus Torvalds 14731da177e4SLinus Torvaldsendmenu 14741da177e4SLinus Torvalds 14751da177e4SLinus Torvaldsmenu "Kernel Features" 14761da177e4SLinus Torvalds 14770567a0c0SKevin Hilmansource "kernel/time/Kconfig" 14780567a0c0SKevin Hilman 14793b55658aSDave Martinconfig HAVE_SMP 14803b55658aSDave Martin bool 14813b55658aSDave Martin help 14823b55658aSDave Martin This option should be selected by machines which have an SMP- 14833b55658aSDave Martin capable CPU. 14843b55658aSDave Martin 14853b55658aSDave Martin The only effect of this option is to make the SMP-related 14863b55658aSDave Martin options available to the user for configuration. 14873b55658aSDave Martin 14881da177e4SLinus Torvaldsconfig SMP 1489bb2d8130SRussell King bool "Symmetric Multi-Processing" 1490fbb4ddacSRussell King depends on CPU_V6K || CPU_V7 1491bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 14923b55658aSDave Martin depends on HAVE_SMP 14939934ebb8SArnd Bergmann depends on MMU 1494f6dd9fa5SJens Axboe select USE_GENERIC_SMP_HELPERS 149589c3dedfSDaniel Walker select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP 14961da177e4SLinus Torvalds help 14971da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 14981da177e4SLinus Torvalds a system with only one CPU, like most personal computers, say N. If 14991da177e4SLinus Torvalds you have a system with more than one CPU, say Y. 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvalds If you say N here, the kernel will run on single and multiprocessor 15021da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 15031da177e4SLinus Torvalds you say Y here, the kernel will run on many, but not all, single 15041da177e4SLinus Torvalds processor machines. On a single processor machine, the kernel will 15051da177e4SLinus Torvalds run faster if you say N here. 15061da177e4SLinus Torvalds 1507395cf969SPaul Bolle See also <file:Documentation/x86/i386/IO-APIC.txt>, 15081da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 150950a23e6eSJustin P. Mattock <http://tldp.org/HOWTO/SMP-HOWTO.html>. 15101da177e4SLinus Torvalds 15111da177e4SLinus Torvalds If you don't know what to do here, say N. 15121da177e4SLinus Torvalds 1513f00ec48fSRussell Kingconfig SMP_ON_UP 1514f00ec48fSRussell King bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)" 1515f00ec48fSRussell King depends on EXPERIMENTAL 15164d2692a7SNicolas Pitre depends on SMP && !XIP_KERNEL 1517f00ec48fSRussell King default y 1518f00ec48fSRussell King help 1519f00ec48fSRussell King SMP kernels contain instructions which fail on non-SMP processors. 1520f00ec48fSRussell King Enabling this option allows the kernel to modify itself to make 1521f00ec48fSRussell King these instructions safe. Disabling it allows about 1K of space 1522f00ec48fSRussell King savings. 1523f00ec48fSRussell King 1524f00ec48fSRussell King If you don't know what to do here, say Y. 1525f00ec48fSRussell King 1526c9018aabSVincent Guittotconfig ARM_CPU_TOPOLOGY 1527c9018aabSVincent Guittot bool "Support cpu topology definition" 1528c9018aabSVincent Guittot depends on SMP && CPU_V7 1529c9018aabSVincent Guittot default y 1530c9018aabSVincent Guittot help 1531c9018aabSVincent Guittot Support ARM cpu topology definition. The MPIDR register defines 1532c9018aabSVincent Guittot affinity between processors which is then used to describe the cpu 1533c9018aabSVincent Guittot topology of an ARM System. 1534c9018aabSVincent Guittot 1535c9018aabSVincent Guittotconfig SCHED_MC 1536c9018aabSVincent Guittot bool "Multi-core scheduler support" 1537c9018aabSVincent Guittot depends on ARM_CPU_TOPOLOGY 1538c9018aabSVincent Guittot help 1539c9018aabSVincent Guittot Multi-core scheduler support improves the CPU scheduler's decision 1540c9018aabSVincent Guittot making when dealing with multi-core CPU chips at a cost of slightly 1541c9018aabSVincent Guittot increased overhead in some places. If unsure say N here. 1542c9018aabSVincent Guittot 1543c9018aabSVincent Guittotconfig SCHED_SMT 1544c9018aabSVincent Guittot bool "SMT scheduler support" 1545c9018aabSVincent Guittot depends on ARM_CPU_TOPOLOGY 1546c9018aabSVincent Guittot help 1547c9018aabSVincent Guittot Improves the CPU scheduler's decision making when dealing with 1548c9018aabSVincent Guittot MultiThreading at a cost of slightly increased overhead in some 1549c9018aabSVincent Guittot places. If unsure say N here. 1550c9018aabSVincent Guittot 1551a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1552a8cbcd92SRussell King bool 1553a8cbcd92SRussell King help 1554a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1555a8cbcd92SRussell King 1556f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1557f32f4ce2SRussell King bool 1558f32f4ce2SRussell King depends on SMP 155915095bb0SRussell King select TICK_ONESHOT 1560f32f4ce2SRussell King help 1561f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1562f32f4ce2SRussell King 15638d5796d2SLennert Buytenhekchoice 15648d5796d2SLennert Buytenhek prompt "Memory split" 15658d5796d2SLennert Buytenhek default VMSPLIT_3G 15668d5796d2SLennert Buytenhek help 15678d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 15688d5796d2SLennert Buytenhek 15698d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 15708d5796d2SLennert Buytenhek option alone! 15718d5796d2SLennert Buytenhek 15728d5796d2SLennert Buytenhek config VMSPLIT_3G 15738d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 15748d5796d2SLennert Buytenhek config VMSPLIT_2G 15758d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 15768d5796d2SLennert Buytenhek config VMSPLIT_1G 15778d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 15788d5796d2SLennert Buytenhekendchoice 15798d5796d2SLennert Buytenhek 15808d5796d2SLennert Buytenhekconfig PAGE_OFFSET 15818d5796d2SLennert Buytenhek hex 15828d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 15838d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 15848d5796d2SLennert Buytenhek default 0xC0000000 15858d5796d2SLennert Buytenhek 15861da177e4SLinus Torvaldsconfig NR_CPUS 15871da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 15881da177e4SLinus Torvalds range 2 32 15891da177e4SLinus Torvalds depends on SMP 15901da177e4SLinus Torvalds default "4" 15911da177e4SLinus Torvalds 1592a054a811SRussell Kingconfig HOTPLUG_CPU 1593a054a811SRussell King bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 1594a054a811SRussell King depends on SMP && HOTPLUG && EXPERIMENTAL 1595a054a811SRussell King help 1596a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1597a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1598a054a811SRussell King 159937ee16aeSRussell Kingconfig LOCAL_TIMERS 160037ee16aeSRussell King bool "Use local timer interrupts" 1601971acb9bSRussell King depends on SMP 160237ee16aeSRussell King default y 160330d8beadSChanghwan Youn select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT) 160437ee16aeSRussell King help 160537ee16aeSRussell King Enable support for local timers on SMP platforms, rather then the 160637ee16aeSRussell King legacy IPI broadcast method. Local timers allows the system 160737ee16aeSRussell King accounting to be spread across the timer interval, preventing a 160837ee16aeSRussell King "thundering herd" at every timer tick. 160937ee16aeSRussell King 161044986ab0SPeter De Schrijver (NVIDIA)config ARCH_NR_GPIO 161144986ab0SPeter De Schrijver (NVIDIA) int 16123dea19e8SPeter De Schrijver (NVIDIA) default 1024 if ARCH_SHMOBILE || ARCH_TEGRA 161370227a45SPhilippe Langlais default 355 if ARCH_U8500 16149a01ec30SPaul Parsons default 264 if MACH_H4700 161544986ab0SPeter De Schrijver (NVIDIA) default 0 161644986ab0SPeter De Schrijver (NVIDIA) help 161744986ab0SPeter De Schrijver (NVIDIA) Maximum number of GPIOs in the system. 161844986ab0SPeter De Schrijver (NVIDIA) 161944986ab0SPeter De Schrijver (NVIDIA) If unsure, leave the default value. 162044986ab0SPeter De Schrijver (NVIDIA) 1621d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 16221da177e4SLinus Torvalds 1623f8065813SRussell Kingconfig HZ 1624f8065813SRussell King int 1625b130d5c2SKukjin Kim default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \ 1626a73ddc61SKukjin Kim ARCH_S5PV210 || ARCH_EXYNOS4 1627bfe65704SRussell King default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER 16285248c657SDavid Brownell default AT91_TIMER_HZ if ARCH_AT91 16295da3e714SMagnus Damm default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE 1630f8065813SRussell King default 100 1631f8065813SRussell King 163216c79651SCatalin Marinasconfig THUMB2_KERNEL 16334a50bfe3SRussell King bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)" 1634e399b1a4SRussell King depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL 163516c79651SCatalin Marinas select AEABI 163616c79651SCatalin Marinas select ARM_ASM_UNIFIED 163789bace65SArnd Bergmann select ARM_UNWIND 163816c79651SCatalin Marinas help 163916c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 164016c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 164116c79651SCatalin Marinas ARM-Thumb syntax is needed. 164216c79651SCatalin Marinas 164316c79651SCatalin Marinas If unsure, say N. 164416c79651SCatalin Marinas 16456f685c5cSDave Martinconfig THUMB2_AVOID_R_ARM_THM_JUMP11 16466f685c5cSDave Martin bool "Work around buggy Thumb-2 short branch relocations in gas" 16476f685c5cSDave Martin depends on THUMB2_KERNEL && MODULES 16486f685c5cSDave Martin default y 16496f685c5cSDave Martin help 16506f685c5cSDave Martin Various binutils versions can resolve Thumb-2 branches to 16516f685c5cSDave Martin locally-defined, preemptible global symbols as short-range "b.n" 16526f685c5cSDave Martin branch instructions. 16536f685c5cSDave Martin 16546f685c5cSDave Martin This is a problem, because there's no guarantee the final 16556f685c5cSDave Martin destination of the symbol, or any candidate locations for a 16566f685c5cSDave Martin trampoline, are within range of the branch. For this reason, the 16576f685c5cSDave Martin kernel does not support fixing up the R_ARM_THM_JUMP11 (102) 16586f685c5cSDave Martin relocation in modules at all, and it makes little sense to add 16596f685c5cSDave Martin support. 16606f685c5cSDave Martin 16616f685c5cSDave Martin The symptom is that the kernel fails with an "unsupported 16626f685c5cSDave Martin relocation" error when loading some modules. 16636f685c5cSDave Martin 16646f685c5cSDave Martin Until fixed tools are available, passing 16656f685c5cSDave Martin -fno-optimize-sibling-calls to gcc should prevent gcc generating 16666f685c5cSDave Martin code which hits this problem, at the cost of a bit of extra runtime 16676f685c5cSDave Martin stack usage in some cases. 16686f685c5cSDave Martin 16696f685c5cSDave Martin The problem is described in more detail at: 16706f685c5cSDave Martin https://bugs.launchpad.net/binutils-linaro/+bug/725126 16716f685c5cSDave Martin 16726f685c5cSDave Martin Only Thumb-2 kernels are affected. 16736f685c5cSDave Martin 16746f685c5cSDave Martin Unless you are sure your tools don't have this problem, say Y. 16756f685c5cSDave Martin 16760becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 16770becb088SCatalin Marinas bool 16780becb088SCatalin Marinas 1679704bdda0SNicolas Pitreconfig AEABI 1680704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1681704bdda0SNicolas Pitre help 1682704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1683704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1684704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1685704bdda0SNicolas Pitre 1686704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1687704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1688704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1689704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1690704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1691704bdda0SNicolas Pitre 1692704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1693704bdda0SNicolas Pitre 16946c90c872SNicolas Pitreconfig OABI_COMPAT 1695a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 16969bc433a1SDave Martin depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL 16976c90c872SNicolas Pitre default y 16986c90c872SNicolas Pitre help 16996c90c872SNicolas Pitre This option preserves the old syscall interface along with the 17006c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 17016c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 17026c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 17036c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 17046c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 17056c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 17066c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 17076c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 17086c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 17096c90c872SNicolas Pitre at all). If in doubt say Y. 17106c90c872SNicolas Pitre 1711eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1712e80d6a24SMel Gorman bool 1713e80d6a24SMel Gorman 171405944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 171505944d74SRussell King bool 171605944d74SRussell King 171707a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 171807a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 171907a2f737SRussell King 172005944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 1721be370302SRussell King def_bool ARCH_SPARSEMEM_ENABLE 1722c80d79d7SYasunori Goto 17237b7bf499SWill Deaconconfig HAVE_ARCH_PFN_VALID 17247b7bf499SWill Deacon def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM 17257b7bf499SWill Deacon 1726053a96caSNicolas Pitreconfig HIGHMEM 1727e8db89a2SRussell King bool "High Memory Support" 1728e8db89a2SRussell King depends on MMU 1729053a96caSNicolas Pitre help 1730053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1731053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1732053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1733053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1734053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1735053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1736053a96caSNicolas Pitre 1737053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1738053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1739053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1740053a96caSNicolas Pitre 1741053a96caSNicolas Pitre If unsure, say n. 1742053a96caSNicolas Pitre 174365cec8e3SRussell Kingconfig HIGHPTE 174465cec8e3SRussell King bool "Allocate 2nd-level pagetables from highmem" 174565cec8e3SRussell King depends on HIGHMEM 174665cec8e3SRussell King 17471b8873a0SJamie Ilesconfig HW_PERF_EVENTS 17481b8873a0SJamie Iles bool "Enable hardware performance counter support for perf events" 1749fe166148SWill Deacon depends on PERF_EVENTS && CPU_HAS_PMU 17501b8873a0SJamie Iles default y 17511b8873a0SJamie Iles help 17521b8873a0SJamie Iles Enable hardware performance counter support for perf events. If 17531b8873a0SJamie Iles disabled, perf events will use software events only. 17541b8873a0SJamie Iles 17553f22ab27SDave Hansensource "mm/Kconfig" 17563f22ab27SDave Hansen 1757c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER 1758c1b2d970SMagnus Damm int "Maximum zone order" if ARCH_SHMOBILE 1759c1b2d970SMagnus Damm range 11 64 if ARCH_SHMOBILE 1760c1b2d970SMagnus Damm default "9" if SA1111 1761c1b2d970SMagnus Damm default "11" 1762c1b2d970SMagnus Damm help 1763c1b2d970SMagnus Damm The kernel memory allocator divides physically contiguous memory 1764c1b2d970SMagnus Damm blocks into "zones", where each zone is a power of two number of 1765c1b2d970SMagnus Damm pages. This option selects the largest power of two that the kernel 1766c1b2d970SMagnus Damm keeps in the memory allocator. If you need to allocate very large 1767c1b2d970SMagnus Damm blocks of physically contiguous memory, then you may need to 1768c1b2d970SMagnus Damm increase this value. 1769c1b2d970SMagnus Damm 1770c1b2d970SMagnus Damm This config option is actually maximum order plus one. For example, 1771c1b2d970SMagnus Damm a value of 11 means that the largest free memory block is 2^10 pages. 1772c1b2d970SMagnus Damm 17731da177e4SLinus Torvaldsconfig LEDS 17741da177e4SLinus Torvalds bool "Timer and CPU usage LEDs" 1775e055d5bfSAdrian Bunk depends on ARCH_CDB89712 || ARCH_EBSA110 || \ 17768c8fdbc9SSascha Hauer ARCH_EBSA285 || ARCH_INTEGRATOR || \ 17771da177e4SLinus Torvalds ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ 17781da177e4SLinus Torvalds ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ 177973a59c1cSSAN People ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ 178025329671SJürgen Schindele ARCH_AT91 || ARCH_DAVINCI || \ 1781ff3042fbSColin Tuckley ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW 17821da177e4SLinus Torvalds help 17831da177e4SLinus Torvalds If you say Y here, the LEDs on your machine will be used 17841da177e4SLinus Torvalds to provide useful information about your current system status. 17851da177e4SLinus Torvalds 17861da177e4SLinus Torvalds If you are compiling a kernel for a NetWinder or EBSA-285, you will 17871da177e4SLinus Torvalds be able to select which LEDs are active using the options below. If 17881da177e4SLinus Torvalds you are compiling a kernel for the EBSA-110 or the LART however, the 17891da177e4SLinus Torvalds red LED will simply flash regularly to indicate that the system is 17901da177e4SLinus Torvalds still functional. It is safe to say Y here if you have a CATS 17911da177e4SLinus Torvalds system, but the driver will do nothing. 17921da177e4SLinus Torvalds 17931da177e4SLinus Torvaldsconfig LEDS_TIMER 17941da177e4SLinus Torvalds bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ 1795eebdf7d7SDavid Brownell OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1796eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 17971da177e4SLinus Torvalds depends on LEDS 17980567a0c0SKevin Hilman depends on !GENERIC_CLOCKEVENTS 17991da177e4SLinus Torvalds default y if ARCH_EBSA110 18001da177e4SLinus Torvalds help 18011da177e4SLinus Torvalds If you say Y here, one of the system LEDs (the green one on the 18021da177e4SLinus Torvalds NetWinder, the amber one on the EBSA285, or the red one on the LART) 18031da177e4SLinus Torvalds will flash regularly to indicate that the system is still 18041da177e4SLinus Torvalds operational. This is mainly useful to kernel hackers who are 18051da177e4SLinus Torvalds debugging unstable kernels. 18061da177e4SLinus Torvalds 18071da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 18081da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 18091da177e4SLinus Torvalds will overrule the CPU usage LED. 18101da177e4SLinus Torvalds 18111da177e4SLinus Torvaldsconfig LEDS_CPU 18121da177e4SLinus Torvalds bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ 1813eebdf7d7SDavid Brownell !ARCH_OMAP) \ 1814eebdf7d7SDavid Brownell || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ 1815eebdf7d7SDavid Brownell || MACH_OMAP_PERSEUS2 18161da177e4SLinus Torvalds depends on LEDS 18171da177e4SLinus Torvalds help 18181da177e4SLinus Torvalds If you say Y here, the red LED will be used to give a good real 18191da177e4SLinus Torvalds time indication of CPU usage, by lighting whenever the idle task 18201da177e4SLinus Torvalds is not currently executing. 18211da177e4SLinus Torvalds 18221da177e4SLinus Torvalds The LART uses the same LED for both Timer LED and CPU usage LED 18231da177e4SLinus Torvalds functions. You may choose to use both, but the Timer LED function 18241da177e4SLinus Torvalds will overrule the CPU usage LED. 18251da177e4SLinus Torvalds 18261da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 18271da177e4SLinus Torvalds bool 1828f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 18291da177e4SLinus Torvalds default y if !ARCH_EBSA110 1830e119bfffSRussell King select HAVE_PROC_CPU if PROC_FS 18311da177e4SLinus Torvalds help 18321da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 18331da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 18341da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 18351da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 18361da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 18371da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 18381da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 18391da177e4SLinus Torvalds 184039ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 184139ec58f3SLennert Buytenhek bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" 184239ec58f3SLennert Buytenhek depends on MMU && EXPERIMENTAL 184339ec58f3SLennert Buytenhek default y if CPU_FEROCEON 184439ec58f3SLennert Buytenhek help 184539ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 184639ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 184739ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 184839ec58f3SLennert Buytenhek 184939ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 185039ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 185139ec58f3SLennert Buytenhek such copy operations with large buffers. 185239ec58f3SLennert Buytenhek 185339ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 185439ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 185539ec58f3SLennert Buytenhek 185670c70d97SNicolas Pitreconfig SECCOMP 185770c70d97SNicolas Pitre bool 185870c70d97SNicolas Pitre prompt "Enable seccomp to safely compute untrusted bytecode" 185970c70d97SNicolas Pitre ---help--- 186070c70d97SNicolas Pitre This kernel feature is useful for number crunching applications 186170c70d97SNicolas Pitre that may need to compute untrusted bytecode during their 186270c70d97SNicolas Pitre execution. By using pipes or other transports made available to 186370c70d97SNicolas Pitre the process as file descriptors supporting the read/write 186470c70d97SNicolas Pitre syscalls, it's possible to isolate those applications in 186570c70d97SNicolas Pitre their own address space using seccomp. Once seccomp is 186670c70d97SNicolas Pitre enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 186770c70d97SNicolas Pitre and the task is only allowed to execute a few safe syscalls 186870c70d97SNicolas Pitre defined by each seccomp mode. 186970c70d97SNicolas Pitre 1870c743f380SNicolas Pitreconfig CC_STACKPROTECTOR 1871c743f380SNicolas Pitre bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" 18724a50bfe3SRussell King depends on EXPERIMENTAL 1873c743f380SNicolas Pitre help 1874c743f380SNicolas Pitre This option turns on the -fstack-protector GCC feature. This 1875c743f380SNicolas Pitre feature puts, at the beginning of functions, a canary value on 1876c743f380SNicolas Pitre the stack just before the return address, and validates 1877c743f380SNicolas Pitre the value just before actually returning. Stack based buffer 1878c743f380SNicolas Pitre overflows (that need to overwrite this return address) now also 1879c743f380SNicolas Pitre overwrite the canary, which gets detected and the attack is then 1880c743f380SNicolas Pitre neutralized via a kernel panic. 1881c743f380SNicolas Pitre This feature requires gcc version 4.2 or above. 1882c743f380SNicolas Pitre 188373a65b3fSUwe Kleine-Königconfig DEPRECATED_PARAM_STRUCT 188473a65b3fSUwe Kleine-König bool "Provide old way to pass kernel parameters" 188573a65b3fSUwe Kleine-König help 188673a65b3fSUwe Kleine-König This was deprecated in 2001 and announced to live on for 5 years. 188773a65b3fSUwe Kleine-König Some old boot loaders still use this way. 188873a65b3fSUwe Kleine-König 18891da177e4SLinus Torvaldsendmenu 18901da177e4SLinus Torvalds 18911da177e4SLinus Torvaldsmenu "Boot options" 18921da177e4SLinus Torvalds 18939eb8f674SGrant Likelyconfig USE_OF 18949eb8f674SGrant Likely bool "Flattened Device Tree support" 18959eb8f674SGrant Likely select OF 18969eb8f674SGrant Likely select OF_EARLY_FLATTREE 189708a543adSGrant Likely select IRQ_DOMAIN 18989eb8f674SGrant Likely help 18999eb8f674SGrant Likely Include support for flattened device tree machine descriptions. 19009eb8f674SGrant Likely 19011da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 19021da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 19031da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 19041da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 19051da177e4SLinus Torvalds default "0" 19061da177e4SLinus Torvalds help 19071da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 19081da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 19091da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 19101da177e4SLinus Torvalds value in their defconfig file. 19111da177e4SLinus Torvalds 19121da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 19131da177e4SLinus Torvalds 19141da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 19151da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 19161da177e4SLinus Torvalds default "0" 19171da177e4SLinus Torvalds help 1918f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1919f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1920f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1921f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1922f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1923f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 19241da177e4SLinus Torvalds 19251da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 19261da177e4SLinus Torvalds 19271da177e4SLinus Torvaldsconfig ZBOOT_ROM 19281da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 19291da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 19301da177e4SLinus Torvalds help 19311da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 19321da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 19331da177e4SLinus Torvalds 1934090ab3ffSSimon Hormanchoice 1935090ab3ffSSimon Horman prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)" 1936090ab3ffSSimon Horman depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL 1937090ab3ffSSimon Horman default ZBOOT_ROM_NONE 1938090ab3ffSSimon Horman help 1939090ab3ffSSimon Horman Include experimental SD/MMC loading code in the ROM-able zImage. 1940090ab3ffSSimon Horman With this enabled it is possible to write the the ROM-able zImage 1941090ab3ffSSimon Horman kernel image to an MMC or SD card and boot the kernel straight 1942090ab3ffSSimon Horman from the reset vector. At reset the processor Mask ROM will load 1943090ab3ffSSimon Horman the first part of the the ROM-able zImage which in turn loads the 1944090ab3ffSSimon Horman rest the kernel image to RAM. 1945090ab3ffSSimon Horman 1946090ab3ffSSimon Hormanconfig ZBOOT_ROM_NONE 1947090ab3ffSSimon Horman bool "No SD/MMC loader in zImage (EXPERIMENTAL)" 1948090ab3ffSSimon Horman help 1949090ab3ffSSimon Horman Do not load image from SD or MMC 1950090ab3ffSSimon Horman 1951f45b1149SSimon Hormanconfig ZBOOT_ROM_MMCIF 1952f45b1149SSimon Horman bool "Include MMCIF loader in zImage (EXPERIMENTAL)" 1953f45b1149SSimon Horman help 1954090ab3ffSSimon Horman Load image from MMCIF hardware block. 1955090ab3ffSSimon Horman 1956090ab3ffSSimon Hormanconfig ZBOOT_ROM_SH_MOBILE_SDHI 1957090ab3ffSSimon Horman bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)" 1958090ab3ffSSimon Horman help 1959090ab3ffSSimon Horman Load image from SDHI hardware block 1960090ab3ffSSimon Horman 1961090ab3ffSSimon Hormanendchoice 1962f45b1149SSimon Horman 1963e2a6a3aaSJohn Bonesioconfig ARM_APPENDED_DTB 1964e2a6a3aaSJohn Bonesio bool "Use appended device tree blob to zImage (EXPERIMENTAL)" 1965e2a6a3aaSJohn Bonesio depends on OF && !ZBOOT_ROM && EXPERIMENTAL 1966e2a6a3aaSJohn Bonesio help 1967e2a6a3aaSJohn Bonesio With this option, the boot code will look for a device tree binary 1968e2a6a3aaSJohn Bonesio (DTB) appended to zImage 1969e2a6a3aaSJohn Bonesio (e.g. cat zImage <filename>.dtb > zImage_w_dtb). 1970e2a6a3aaSJohn Bonesio 1971e2a6a3aaSJohn Bonesio This is meant as a backward compatibility convenience for those 1972e2a6a3aaSJohn Bonesio systems with a bootloader that can't be upgraded to accommodate 1973e2a6a3aaSJohn Bonesio the documented boot protocol using a device tree. 1974e2a6a3aaSJohn Bonesio 1975e2a6a3aaSJohn Bonesio Beware that there is very little in terms of protection against 1976e2a6a3aaSJohn Bonesio this option being confused by leftover garbage in memory that might 1977e2a6a3aaSJohn Bonesio look like a DTB header after a reboot if no actual DTB is appended 1978e2a6a3aaSJohn Bonesio to zImage. Do not leave this option active in a production kernel 1979e2a6a3aaSJohn Bonesio if you don't intend to always append a DTB. Proper passing of the 1980e2a6a3aaSJohn Bonesio location into r2 of a bootloader provided DTB is always preferable 1981e2a6a3aaSJohn Bonesio to this option. 1982e2a6a3aaSJohn Bonesio 1983b90b9a38SNicolas Pitreconfig ARM_ATAG_DTB_COMPAT 1984b90b9a38SNicolas Pitre bool "Supplement the appended DTB with traditional ATAG information" 1985b90b9a38SNicolas Pitre depends on ARM_APPENDED_DTB 1986b90b9a38SNicolas Pitre help 1987b90b9a38SNicolas Pitre Some old bootloaders can't be updated to a DTB capable one, yet 1988b90b9a38SNicolas Pitre they provide ATAGs with memory configuration, the ramdisk address, 1989b90b9a38SNicolas Pitre the kernel cmdline string, etc. Such information is dynamically 1990b90b9a38SNicolas Pitre provided by the bootloader and can't always be stored in a static 1991b90b9a38SNicolas Pitre DTB. To allow a device tree enabled kernel to be used with such 1992b90b9a38SNicolas Pitre bootloaders, this option allows zImage to extract the information 1993b90b9a38SNicolas Pitre from the ATAG list and store it at run time into the appended DTB. 1994b90b9a38SNicolas Pitre 19951da177e4SLinus Torvaldsconfig CMDLINE 19961da177e4SLinus Torvalds string "Default kernel command string" 19971da177e4SLinus Torvalds default "" 19981da177e4SLinus Torvalds help 19991da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 20001da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 20011da177e4SLinus Torvalds architectures, you should supply some command-line options at build 20021da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 20031da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 20041da177e4SLinus Torvalds 20054394c124SVictor Boiviechoice 20064394c124SVictor Boivie prompt "Kernel command line type" if CMDLINE != "" 20074394c124SVictor Boivie default CMDLINE_FROM_BOOTLOADER 20084394c124SVictor Boivie 20094394c124SVictor Boivieconfig CMDLINE_FROM_BOOTLOADER 20104394c124SVictor Boivie bool "Use bootloader kernel arguments if available" 20114394c124SVictor Boivie help 20124394c124SVictor Boivie Uses the command-line options passed by the boot loader. If 20134394c124SVictor Boivie the boot loader doesn't provide any, the default kernel command 20144394c124SVictor Boivie string provided in CMDLINE will be used. 20154394c124SVictor Boivie 20164394c124SVictor Boivieconfig CMDLINE_EXTEND 20174394c124SVictor Boivie bool "Extend bootloader kernel arguments" 20184394c124SVictor Boivie help 20194394c124SVictor Boivie The command-line arguments provided by the boot loader will be 20204394c124SVictor Boivie appended to the default kernel command string. 20214394c124SVictor Boivie 202292d2040dSAlexander Hollerconfig CMDLINE_FORCE 202392d2040dSAlexander Holler bool "Always use the default kernel command string" 202492d2040dSAlexander Holler help 202592d2040dSAlexander Holler Always use the default kernel command string, even if the boot 202692d2040dSAlexander Holler loader passes other arguments to the kernel. 202792d2040dSAlexander Holler This is useful if you cannot or don't want to change the 202892d2040dSAlexander Holler command-line options your boot loader passes to the kernel. 20294394c124SVictor Boivieendchoice 203092d2040dSAlexander Holler 20311da177e4SLinus Torvaldsconfig XIP_KERNEL 20321da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 2033497b7e94SCatalin Marinas depends on !ZBOOT_ROM && !ARM_LPAE 20341da177e4SLinus Torvalds help 20351da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 20361da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 20371da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 20381da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 20391da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 20401da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 20411da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 20421da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 20431da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 20441da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 20451da177e4SLinus Torvalds 20461da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 20471da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 20481da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 20491da177e4SLinus Torvalds 20501da177e4SLinus Torvalds If unsure, say N. 20511da177e4SLinus Torvalds 20521da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 20531da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 20541da177e4SLinus Torvalds depends on XIP_KERNEL 20551da177e4SLinus Torvalds default "0x00080000" 20561da177e4SLinus Torvalds help 20571da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 20581da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 20591da177e4SLinus Torvalds own flash usage. 20601da177e4SLinus Torvalds 2061c587e4a6SRichard Purdieconfig KEXEC 2062c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 206302b73e2eSWill Deacon depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU) 2064c587e4a6SRichard Purdie help 2065c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 2066c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 206701dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 2068c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 2069c587e4a6SRichard Purdie 2070c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 2071c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 2072c587e4a6SRichard Purdie initially work for you. It may help to enable device hotplugging 2073c587e4a6SRichard Purdie support. 2074c587e4a6SRichard Purdie 20754cd9d6f7SRichard Purdieconfig ATAGS_PROC 20764cd9d6f7SRichard Purdie bool "Export atags in procfs" 2077b98d7291SUli Luckas depends on KEXEC 2078b98d7291SUli Luckas default y 20794cd9d6f7SRichard Purdie help 20804cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 20814cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 20824cd9d6f7SRichard Purdie 2083cb5d39b3SMika Westerbergconfig CRASH_DUMP 2084cb5d39b3SMika Westerberg bool "Build kdump crash kernel (EXPERIMENTAL)" 2085cb5d39b3SMika Westerberg depends on EXPERIMENTAL 2086cb5d39b3SMika Westerberg help 2087cb5d39b3SMika Westerberg Generate crash dump after being started by kexec. This should 2088cb5d39b3SMika Westerberg be normally only set in special crash dump kernels which are 2089cb5d39b3SMika Westerberg loaded in the main kernel with kexec-tools into a specially 2090cb5d39b3SMika Westerberg reserved region and then later executed after a crash by 2091cb5d39b3SMika Westerberg kdump/kexec. The crash dump kernel must be compiled to a 2092cb5d39b3SMika Westerberg memory address not used by the main kernel 2093cb5d39b3SMika Westerberg 2094cb5d39b3SMika Westerberg For more details see Documentation/kdump/kdump.txt 2095cb5d39b3SMika Westerberg 2096e69edc79SEric Miaoconfig AUTO_ZRELADDR 2097e69edc79SEric Miao bool "Auto calculation of the decompressed kernel image address" 2098e69edc79SEric Miao depends on !ZBOOT_ROM && !ARCH_U300 2099e69edc79SEric Miao help 2100e69edc79SEric Miao ZRELADDR is the physical address where the decompressed kernel 2101e69edc79SEric Miao image will be placed. If AUTO_ZRELADDR is selected, the address 2102e69edc79SEric Miao will be determined at run-time by masking the current IP with 2103e69edc79SEric Miao 0xf8000000. This assumes the zImage being placed in the first 128MB 2104e69edc79SEric Miao from start of memory. 2105e69edc79SEric Miao 21061da177e4SLinus Torvaldsendmenu 21071da177e4SLinus Torvalds 2108ac9d7efcSRussell Kingmenu "CPU Power Management" 21091da177e4SLinus Torvalds 211089c52ed4SBen Dooksif ARCH_HAS_CPUFREQ 21111da177e4SLinus Torvalds 21121da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 21131da177e4SLinus Torvalds 211464f102b6SYong Shenconfig CPU_FREQ_IMX 211564f102b6SYong Shen tristate "CPUfreq driver for i.MX CPUs" 211664f102b6SYong Shen depends on ARCH_MXC && CPU_FREQ 211764f102b6SYong Shen help 211864f102b6SYong Shen This enables the CPUfreq driver for i.MX CPUs. 211964f102b6SYong Shen 21201da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100 21211da177e4SLinus Torvalds bool 21221da177e4SLinus Torvalds 21231da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110 21241da177e4SLinus Torvalds bool 21251da177e4SLinus Torvalds 21261da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR 21271da177e4SLinus Torvalds tristate "CPUfreq driver for ARM Integrator CPUs" 21281da177e4SLinus Torvalds depends on ARCH_INTEGRATOR && CPU_FREQ 21291da177e4SLinus Torvalds default y 21301da177e4SLinus Torvalds help 21311da177e4SLinus Torvalds This enables the CPUfreq driver for ARM Integrator CPUs. 21321da177e4SLinus Torvalds 21331da177e4SLinus Torvalds For details, take a look at <file:Documentation/cpu-freq>. 21341da177e4SLinus Torvalds 21351da177e4SLinus Torvalds If in doubt, say Y. 21361da177e4SLinus Torvalds 21379e2697ffSRussell Kingconfig CPU_FREQ_PXA 21389e2697ffSRussell King bool 21399e2697ffSRussell King depends on CPU_FREQ && ARCH_PXA && PXA25x 21409e2697ffSRussell King default y 2141ca7d156eSArnd Bergmann select CPU_FREQ_TABLE 21429e2697ffSRussell King select CPU_FREQ_DEFAULT_GOV_USERSPACE 21439e2697ffSRussell King 21449d56c02aSBen Dooksconfig CPU_FREQ_S3C 21459d56c02aSBen Dooks bool 21469d56c02aSBen Dooks help 21479d56c02aSBen Dooks Internal configuration node for common cpufreq on Samsung SoC 21489d56c02aSBen Dooks 21499d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX 21504a50bfe3SRussell King bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)" 2151b130d5c2SKukjin Kim depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL 21529d56c02aSBen Dooks select CPU_FREQ_S3C 21539d56c02aSBen Dooks help 21549d56c02aSBen Dooks This enables the CPUfreq driver for the Samsung S3C24XX family 21559d56c02aSBen Dooks of CPUs. 21569d56c02aSBen Dooks 21579d56c02aSBen Dooks For details, take a look at <file:Documentation/cpu-freq>. 21589d56c02aSBen Dooks 21599d56c02aSBen Dooks If in doubt, say N. 21609d56c02aSBen Dooks 21619d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL 21624a50bfe3SRussell King bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)" 21639d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX && EXPERIMENTAL 21649d56c02aSBen Dooks help 21659d56c02aSBen Dooks Compile in support for changing the PLL frequency from the 21669d56c02aSBen Dooks S3C24XX series CPUfreq driver. The PLL takes time to settle 21679d56c02aSBen Dooks after a frequency change, so by default it is not enabled. 21689d56c02aSBen Dooks 21699d56c02aSBen Dooks This also means that the PLL tables for the selected CPU(s) will 21709d56c02aSBen Dooks be built which may increase the size of the kernel image. 21719d56c02aSBen Dooks 21729d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG 21739d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver core" 21749d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 21759d56c02aSBen Dooks help 21769d56c02aSBen Dooks Enable s3c_freq_dbg for the Samsung S3C CPUfreq core 21779d56c02aSBen Dooks 21789d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG 21799d56c02aSBen Dooks bool "Debug CPUfreq Samsung driver IO timing" 21809d56c02aSBen Dooks depends on CPU_FREQ_S3C24XX 21819d56c02aSBen Dooks help 21829d56c02aSBen Dooks Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core 21839d56c02aSBen Dooks 2184e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS 2185e6d197a6SBen Dooks bool "Export debugfs for CPUFreq" 2186e6d197a6SBen Dooks depends on CPU_FREQ_S3C24XX && DEBUG_FS 2187e6d197a6SBen Dooks help 2188e6d197a6SBen Dooks Export status information via debugfs. 2189e6d197a6SBen Dooks 21901da177e4SLinus Torvaldsendif 21911da177e4SLinus Torvalds 2192ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 2193ac9d7efcSRussell King 2194ac9d7efcSRussell Kingendmenu 2195ac9d7efcSRussell King 21961da177e4SLinus Torvaldsmenu "Floating point emulation" 21971da177e4SLinus Torvalds 21981da177e4SLinus Torvaldscomment "At least one emulation must be selected" 21991da177e4SLinus Torvalds 22001da177e4SLinus Torvaldsconfig FPE_NWFPE 22011da177e4SLinus Torvalds bool "NWFPE math emulation" 2202593c252aSDave Martin depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL 22031da177e4SLinus Torvalds ---help--- 22041da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 22051da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 22061da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 22071da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 22081da177e4SLinus Torvalds 22091da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 22101da177e4SLinus Torvalds early in the bootup. 22111da177e4SLinus Torvalds 22121da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 22131da177e4SLinus Torvalds bool "Support extended precision" 2214bedf142bSLennert Buytenhek depends on FPE_NWFPE 22151da177e4SLinus Torvalds help 22161da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 22171da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 22181da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 22191da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 22201da177e4SLinus Torvalds floating point emulator without any good reason. 22211da177e4SLinus Torvalds 22221da177e4SLinus Torvalds You almost surely want to say N here. 22231da177e4SLinus Torvalds 22241da177e4SLinus Torvaldsconfig FPE_FASTFPE 22251da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 22268993a44cSNicolas Pitre depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL 22271da177e4SLinus Torvalds ---help--- 22281da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 22291da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 22301da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 22311da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 22321da177e4SLinus Torvalds 22331da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 22341da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 22351da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 22361da177e4SLinus Torvalds choose NWFPE. 22371da177e4SLinus Torvalds 22381da177e4SLinus Torvaldsconfig VFP 22391da177e4SLinus Torvalds bool "VFP-format floating point maths" 2240e399b1a4SRussell King depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 22411da177e4SLinus Torvalds help 22421da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 22431da177e4SLinus Torvalds if your hardware includes a VFP unit. 22441da177e4SLinus Torvalds 22451da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 22461da177e4SLinus Torvalds release notes and additional status information. 22471da177e4SLinus Torvalds 22481da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 22491da177e4SLinus Torvalds 225025ebee02SCatalin Marinasconfig VFPv3 225125ebee02SCatalin Marinas bool 225225ebee02SCatalin Marinas depends on VFP 225325ebee02SCatalin Marinas default y if CPU_V7 225425ebee02SCatalin Marinas 2255b5872db4SCatalin Marinasconfig NEON 2256b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 2257b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 2258b5872db4SCatalin Marinas help 2259b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 2260b5872db4SCatalin Marinas Extension. 2261b5872db4SCatalin Marinas 22621da177e4SLinus Torvaldsendmenu 22631da177e4SLinus Torvalds 22641da177e4SLinus Torvaldsmenu "Userspace binary formats" 22651da177e4SLinus Torvalds 22661da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 22671da177e4SLinus Torvalds 22681da177e4SLinus Torvaldsconfig ARTHUR 22691da177e4SLinus Torvalds tristate "RISC OS personality" 2270704bdda0SNicolas Pitre depends on !AEABI 22711da177e4SLinus Torvalds help 22721da177e4SLinus Torvalds Say Y here to include the kernel code necessary if you want to run 22731da177e4SLinus Torvalds Acorn RISC OS/Arthur binaries under Linux. This code is still very 22741da177e4SLinus Torvalds experimental; if this sounds frightening, say N and sleep in peace. 22751da177e4SLinus Torvalds You can also say M here to compile this support as a module (which 22761da177e4SLinus Torvalds will be called arthur). 22771da177e4SLinus Torvalds 22781da177e4SLinus Torvaldsendmenu 22791da177e4SLinus Torvalds 22801da177e4SLinus Torvaldsmenu "Power management options" 22811da177e4SLinus Torvalds 2282eceab4acSRussell Kingsource "kernel/power/Kconfig" 22831da177e4SLinus Torvalds 2284f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 22856b6844ddSAbhilash Kesavan depends on !ARCH_S5PC100 22866a786182SRussell King depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \ 22876a786182SRussell King CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE 2288f4cb5700SJohannes Berg def_bool y 2289f4cb5700SJohannes Berg 229015e0d9e3SArnd Bergmannconfig ARM_CPU_SUSPEND 229115e0d9e3SArnd Bergmann def_bool PM_SLEEP 229215e0d9e3SArnd Bergmann 22931da177e4SLinus Torvaldsendmenu 22941da177e4SLinus Torvalds 2295d5950b43SSam Ravnborgsource "net/Kconfig" 2296d5950b43SSam Ravnborg 2297ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 22981da177e4SLinus Torvalds 22991da177e4SLinus Torvaldssource "fs/Kconfig" 23001da177e4SLinus Torvalds 23011da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 23021da177e4SLinus Torvalds 23031da177e4SLinus Torvaldssource "security/Kconfig" 23041da177e4SLinus Torvalds 23051da177e4SLinus Torvaldssource "crypto/Kconfig" 23061da177e4SLinus Torvalds 23071da177e4SLinus Torvaldssource "lib/Kconfig" 2308