11da177e4SLinus Torvaldsconfig ARM 21da177e4SLinus Torvalds bool 31da177e4SLinus Torvalds default y 47463449bSCatalin Marinas select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 521266be9SDan Williams select ARCH_HAS_DEVMEM_IS_ALLOWED 62b68f6caSKees Cook select ARCH_HAS_ELF_RANDOMIZE 73d06770eSMark Rutland select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 8171b3f0dSRussell King select ARCH_HAVE_CUSTOM_GPIO_H 9957e3facSRiku Voipio select ARCH_HAS_GCOV_PROFILE_ALL 10d7018848SMark Salter select ARCH_MIGHT_HAVE_PC_PARPORT 114badad35SPeter Zijlstra select ARCH_SUPPORTS_ATOMIC_RMW 12017f161aSKim Phillips select ARCH_USE_BUILTIN_BSWAP 130cbad9c9SWill Deacon select ARCH_USE_CMPXCHG_LOCKREF 14b1b3f49cSRussell King select ARCH_WANT_IPC_PARSE_VERSION 15ee951c63SStephen Boyd select BUILDTIME_EXTABLE_SORT if MMU 16171b3f0dSRussell King select CLONE_BACKWARDS 17b1b3f49cSRussell King select CPU_PM if (SUSPEND || CPU_IDLE) 18dce5c9e3SWill Deacon select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS 19b01aec9bSBorislav Petkov select EDAC_SUPPORT 20b01aec9bSBorislav Petkov select EDAC_ATOMIC_SCRUB 2136d0fd21SLaura Abbott select GENERIC_ALLOCATOR 224477ca45SUwe Kleine-König select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI) 23b1b3f49cSRussell King select GENERIC_CLOCKEVENTS_BROADCAST if SMP 242937367bSArd Biesheuvel select GENERIC_EARLY_IOREMAP 25171b3f0dSRussell King select GENERIC_IDLE_POLL_SETUP 26b1b3f49cSRussell King select GENERIC_IRQ_PROBE 27b1b3f49cSRussell King select GENERIC_IRQ_SHOW 287c07005eSGeert Uytterhoeven select GENERIC_IRQ_SHOW_LEVEL 29b1b3f49cSRussell King select GENERIC_PCI_IOMAP 3038ff87f7SStephen Boyd select GENERIC_SCHED_CLOCK 31b1b3f49cSRussell King select GENERIC_SMP_IDLE_THREAD 32b1b3f49cSRussell King select GENERIC_STRNCPY_FROM_USER 33b1b3f49cSRussell King select GENERIC_STRNLEN_USER 34a71b092aSMarc Zyngier select HANDLE_DOMAIN_IRQ 35b1b3f49cSRussell King select HARDIRQS_SW_RESEND 367a017721SAKASHI Takahiro select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT) 370b7857dbSYalin Wang select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6 38437682eeSArnd Bergmann select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU 39437682eeSArnd Bergmann select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU 40e0c25d95SDaniel Cashman select HAVE_ARCH_MMAP_RND_BITS if MMU 4191702175SKees Cook select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT) 420693bf68SWade Farnsworth select HAVE_ARCH_TRACEHOOK 43b329f95dSJens Wiklander select HAVE_ARM_SMCCC if CPU_V7 446077776bSDaniel Borkmann select HAVE_CBPF_JIT 4551aaf81fSRussell King select HAVE_CC_STACKPROTECTOR 46171b3f0dSRussell King select HAVE_CONTEXT_TRACKING 47b1b3f49cSRussell King select HAVE_C_RECORDMCOUNT 48b1b3f49cSRussell King select HAVE_DEBUG_KMEMLEAK 49b1b3f49cSRussell King select HAVE_DMA_API_DEBUG 50b1b3f49cSRussell King select HAVE_DMA_CONTIGUOUS if MMU 51437682eeSArnd Bergmann select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU 52dce5c9e3SWill Deacon select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU 535f56a5dfSJiri Slaby select HAVE_EXIT_THREAD 54b1b3f49cSRussell King select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL) 55b1b3f49cSRussell King select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL) 56b1b3f49cSRussell King select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) 57b1b3f49cSRussell King select HAVE_GENERIC_DMA_COHERENT 58b1b3f49cSRussell King select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7)) 59b1b3f49cSRussell King select HAVE_IDE if PCI || ISA || PCMCIA 6087c46b6cSRussell King select HAVE_IRQ_TIME_ACCOUNTING 61b1b3f49cSRussell King select HAVE_KERNEL_GZIP 62f9b493acSKyungsik Lee select HAVE_KERNEL_LZ4 63b1b3f49cSRussell King select HAVE_KERNEL_LZMA 64b1b3f49cSRussell King select HAVE_KERNEL_LZO 65b1b3f49cSRussell King select HAVE_KERNEL_XZ 66cb1293e2SArnd Bergmann select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M 679edddaa2SAnanth N Mavinakayanahalli select HAVE_KRETPROBES if (HAVE_KPROBES) 68b1b3f49cSRussell King select HAVE_MEMBLOCK 697d485f64SArd Biesheuvel select HAVE_MOD_ARCH_SPECIFIC 7042a0bb3fSPetr Mladek select HAVE_NMI 71b1b3f49cSRussell King select HAVE_OPROFILE if (HAVE_PERF_EVENTS) 720dc016dbSWang Nan select HAVE_OPTPROBES if !THUMB2_KERNEL 737ada189fSJamie Iles select HAVE_PERF_EVENTS 7449863894SWill Deacon select HAVE_PERF_REGS 7549863894SWill Deacon select HAVE_PERF_USER_STACK_DUMP 76a0ad5496SSteve Capper select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE) 77e513f8bfSWill Deacon select HAVE_REGS_AND_STACK_ACCESS_API 78b1b3f49cSRussell King select HAVE_SYSCALL_TRACEPOINTS 79af1839ebSCatalin Marinas select HAVE_UID16 8031c1fc81SKevin Hilman select HAVE_VIRT_CPU_ACCOUNTING_GEN 81da0ec6f7SThomas Gleixner select IRQ_FORCED_THREADING 82171b3f0dSRussell King select MODULES_USE_ELF_REL 8384f452b1SSantosh Shilimkar select NO_BOOTMEM 84aa7d5f18SArnd Bergmann select OF_EARLY_FLATTREE if OF 85aa7d5f18SArnd Bergmann select OF_RESERVED_MEM if OF 86171b3f0dSRussell King select OLD_SIGACTION 87171b3f0dSRussell King select OLD_SIGSUSPEND3 88b1b3f49cSRussell King select PERF_USE_VMALLOC 89b1b3f49cSRussell King select RTC_LIB 90b1b3f49cSRussell King select SYS_SUPPORTS_APM_EMULATION 91171b3f0dSRussell King # Above selects are sorted alphabetically; please add new ones 92171b3f0dSRussell King # according to that. Thanks. 931da177e4SLinus Torvalds help 941da177e4SLinus Torvalds The ARM series is a line of low-power-consumption RISC chip designs 95f6c8965aSMartin Michlmayr licensed by ARM Ltd and targeted at embedded applications and 961da177e4SLinus Torvalds handhelds such as the Compaq IPAQ. ARM-based PCs are no longer 971da177e4SLinus Torvalds manufactured, but legacy ARM-based PC hardware remains popular in 981da177e4SLinus Torvalds Europe. There is an ARM Linux project with a web page at 991da177e4SLinus Torvalds <http://www.arm.linux.org.uk/>. 1001da177e4SLinus Torvalds 10174facffeSRussell Kingconfig ARM_HAS_SG_CHAIN 102308c09f1SLaura Abbott select ARCH_HAS_SG_CHAIN 10374facffeSRussell King bool 10474facffeSRussell King 1054ce63fcdSMarek Szyprowskiconfig NEED_SG_DMA_LENGTH 1064ce63fcdSMarek Szyprowski bool 1074ce63fcdSMarek Szyprowski 1084ce63fcdSMarek Szyprowskiconfig ARM_DMA_USE_IOMMU 1094ce63fcdSMarek Szyprowski bool 110b1b3f49cSRussell King select ARM_HAS_SG_CHAIN 111b1b3f49cSRussell King select NEED_SG_DMA_LENGTH 1124ce63fcdSMarek Szyprowski 11360460abfSSeung-Woo Kimif ARM_DMA_USE_IOMMU 11460460abfSSeung-Woo Kim 11560460abfSSeung-Woo Kimconfig ARM_DMA_IOMMU_ALIGNMENT 11660460abfSSeung-Woo Kim int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers" 11760460abfSSeung-Woo Kim range 4 9 11860460abfSSeung-Woo Kim default 8 11960460abfSSeung-Woo Kim help 12060460abfSSeung-Woo Kim DMA mapping framework by default aligns all buffers to the smallest 12160460abfSSeung-Woo Kim PAGE_SIZE order which is greater than or equal to the requested buffer 12260460abfSSeung-Woo Kim size. This works well for buffers up to a few hundreds kilobytes, but 12360460abfSSeung-Woo Kim for larger buffers it just a waste of address space. Drivers which has 12460460abfSSeung-Woo Kim relatively small addressing window (like 64Mib) might run out of 12560460abfSSeung-Woo Kim virtual space with just a few allocations. 12660460abfSSeung-Woo Kim 12760460abfSSeung-Woo Kim With this parameter you can specify the maximum PAGE_SIZE order for 12860460abfSSeung-Woo Kim DMA IOMMU buffers. Larger buffers will be aligned only to this 12960460abfSSeung-Woo Kim specified order. The order is expressed as a power of two multiplied 13060460abfSSeung-Woo Kim by the PAGE_SIZE. 13160460abfSSeung-Woo Kim 13260460abfSSeung-Woo Kimendif 13360460abfSSeung-Woo Kim 1340b05da72SHans Ulli Krollconfig MIGHT_HAVE_PCI 1350b05da72SHans Ulli Kroll bool 1360b05da72SHans Ulli Kroll 13775e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION 13875e7153aSRalf Baechle bool 13975e7153aSRalf Baechle 140bc581770SLinus Walleijconfig HAVE_TCM 141bc581770SLinus Walleij bool 142bc581770SLinus Walleij select GENERIC_ALLOCATOR 143bc581770SLinus Walleij 144e119bfffSRussell Kingconfig HAVE_PROC_CPU 145e119bfffSRussell King bool 146e119bfffSRussell King 147ce816fa8SUwe Kleine-Königconfig NO_IOPORT_MAP 1485ea81769SAl Viro bool 1495ea81769SAl Viro 1501da177e4SLinus Torvaldsconfig EISA 1511da177e4SLinus Torvalds bool 1521da177e4SLinus Torvalds ---help--- 1531da177e4SLinus Torvalds The Extended Industry Standard Architecture (EISA) bus was 1541da177e4SLinus Torvalds developed as an open alternative to the IBM MicroChannel bus. 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds The EISA bus provided some of the features of the IBM MicroChannel 1571da177e4SLinus Torvalds bus while maintaining backward compatibility with cards made for 1581da177e4SLinus Torvalds the older ISA bus. The EISA bus saw limited use between 1988 and 1591da177e4SLinus Torvalds 1995 when it was made obsolete by the PCI bus. 1601da177e4SLinus Torvalds 1611da177e4SLinus Torvalds Say Y here if you are building a kernel for an EISA-based machine. 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvalds Otherwise, say N. 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvaldsconfig SBUS 1661da177e4SLinus Torvalds bool 1671da177e4SLinus Torvalds 168f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT 169f16fb1ecSRussell King bool 170f16fb1ecSRussell King default y 171f16fb1ecSRussell King 172f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT 173f16fb1ecSRussell King bool 174f16fb1ecSRussell King default y 175f16fb1ecSRussell King 1767ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT 1777ad1bcb2SRussell King bool 178cb1293e2SArnd Bergmann default !CPU_V7M 1797ad1bcb2SRussell King 1801da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM 1811da177e4SLinus Torvalds bool 1828a87411bSWill Deacon default y 1831da177e4SLinus Torvalds 184f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32 185f0d1b0b3SDavid Howells bool 186f0d1b0b3SDavid Howells 187f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64 188f0d1b0b3SDavid Howells bool 189f0d1b0b3SDavid Howells 1904a1b5733SEduardo Valentinconfig ARCH_HAS_BANDGAP 1914a1b5733SEduardo Valentin bool 1924a1b5733SEduardo Valentin 193a5f4c561SStefan Agnerconfig FIX_EARLYCON_MEM 194a5f4c561SStefan Agner def_bool y if MMU 195a5f4c561SStefan Agner 196b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT 197b89c3b16SAkinobu Mita bool 198b89c3b16SAkinobu Mita default y 199b89c3b16SAkinobu Mita 2001da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY 2011da177e4SLinus Torvalds bool 2021da177e4SLinus Torvalds default y 2031da177e4SLinus Torvalds 204a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC 205a08b6b79Sviro@ZenIV.linux.org.uk bool 206a08b6b79Sviro@ZenIV.linux.org.uk 2075ac6da66SChristoph Lameterconfig ZONE_DMA 2085ac6da66SChristoph Lameter bool 2095ac6da66SChristoph Lameter 210ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE 211ccd7ab7fSFUJITA Tomonori def_bool y 212ccd7ab7fSFUJITA Tomonori 213c7edc9e3SDavid A. Longconfig ARCH_SUPPORTS_UPROBES 214c7edc9e3SDavid A. Long def_bool y 215c7edc9e3SDavid A. Long 21658af4a24SRob Herringconfig ARCH_HAS_DMA_SET_COHERENT_MASK 21758af4a24SRob Herring bool 21858af4a24SRob Herring 2191da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA 2201da177e4SLinus Torvalds bool 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvaldsconfig FIQ 2231da177e4SLinus Torvalds bool 2241da177e4SLinus Torvalds 22513a5045dSRob Herringconfig NEED_RET_TO_USER 22613a5045dSRob Herring bool 22713a5045dSRob Herring 228034d2f5aSAl Viroconfig ARCH_MTD_XIP 229034d2f5aSAl Viro bool 230034d2f5aSAl Viro 231c760fc19SHyok S. Choiconfig VECTORS_BASE 232c760fc19SHyok S. Choi hex 2336afd6faeSHyok S. Choi default 0xffff0000 if MMU || CPU_HIGH_VECTOR 234c760fc19SHyok S. Choi default DRAM_BASE if REMAP_VECTORS_TO_RAM 235c760fc19SHyok S. Choi default 0x00000000 236c760fc19SHyok S. Choi help 23719accfd3SRussell King The base address of exception vectors. This must be two pages 23819accfd3SRussell King in size. 239c760fc19SHyok S. Choi 240dc21af99SRussell Kingconfig ARM_PATCH_PHYS_VIRT 241c1becedcSRussell King bool "Patch physical to virtual translations at runtime" if EMBEDDED 242c1becedcSRussell King default y 243b511d75dSNicolas Pitre depends on !XIP_KERNEL && MMU 244dc21af99SRussell King help 245111e9a5cSRussell King Patch phys-to-virt and virt-to-phys translation functions at 246111e9a5cSRussell King boot and module load time according to the position of the 247111e9a5cSRussell King kernel in system memory. 248dc21af99SRussell King 249111e9a5cSRussell King This can only be used with non-XIP MMU kernels where the base 250daece596SNicolas Pitre of physical memory is at a 16MB boundary. 251dc21af99SRussell King 252c1becedcSRussell King Only disable this option if you know that you do not require 253c1becedcSRussell King this feature (eg, building a kernel for a single machine) and 254c1becedcSRussell King you need to shrink the kernel to the minimal size. 255c1becedcSRussell King 256c334bc15SRob Herringconfig NEED_MACH_IO_H 257c334bc15SRob Herring bool 258c334bc15SRob Herring help 259c334bc15SRob Herring Select this when mach/io.h is required to provide special 260c334bc15SRob Herring definitions for this platform. The need for mach/io.h should 261c334bc15SRob Herring be avoided when possible. 262c334bc15SRob Herring 2630cdc8b92SNicolas Pitreconfig NEED_MACH_MEMORY_H 2641b9f95f8SNicolas Pitre bool 265111e9a5cSRussell King help 2660cdc8b92SNicolas Pitre Select this when mach/memory.h is required to provide special 2670cdc8b92SNicolas Pitre definitions for this platform. The need for mach/memory.h should 2680cdc8b92SNicolas Pitre be avoided when possible. 2691b9f95f8SNicolas Pitre 2701b9f95f8SNicolas Pitreconfig PHYS_OFFSET 271974c0724SNicolas Pitre hex "Physical address of main memory" if MMU 272c6f54a9bSUwe Kleine-König depends on !ARM_PATCH_PHYS_VIRT 273974c0724SNicolas Pitre default DRAM_BASE if !MMU 274c6f54a9bSUwe Kleine-König default 0x00000000 if ARCH_EBSA110 || \ 275c6f54a9bSUwe Kleine-König ARCH_FOOTBRIDGE || \ 276c6f54a9bSUwe Kleine-König ARCH_INTEGRATOR || \ 277c6f54a9bSUwe Kleine-König ARCH_IOP13XX || \ 278c6f54a9bSUwe Kleine-König ARCH_KS8695 || \ 279c6f54a9bSUwe Kleine-König (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET) 280c6f54a9bSUwe Kleine-König default 0x10000000 if ARCH_OMAP1 || ARCH_RPC 281c6f54a9bSUwe Kleine-König default 0x20000000 if ARCH_S5PV210 282c6f54a9bSUwe Kleine-König default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET 283b8824c9aSH Hartley Sweeten default 0xc0000000 if ARCH_SA1100 2841b9f95f8SNicolas Pitre help 2851b9f95f8SNicolas Pitre Please provide the physical address corresponding to the 2861b9f95f8SNicolas Pitre location of main memory in your system. 287cada3c08SRussell King 28887e040b6SSimon Glassconfig GENERIC_BUG 28987e040b6SSimon Glass def_bool y 29087e040b6SSimon Glass depends on BUG 29187e040b6SSimon Glass 2921bcad26eSKirill A. Shutemovconfig PGTABLE_LEVELS 2931bcad26eSKirill A. Shutemov int 2941bcad26eSKirill A. Shutemov default 3 if ARM_LPAE 2951bcad26eSKirill A. Shutemov default 2 2961bcad26eSKirill A. Shutemov 2971da177e4SLinus Torvaldssource "init/Kconfig" 2981da177e4SLinus Torvalds 299dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer" 300dc52ddc0SMatt Helsley 3011da177e4SLinus Torvaldsmenu "System Type" 3021da177e4SLinus Torvalds 3033c427975SHyok S. Choiconfig MMU 3043c427975SHyok S. Choi bool "MMU-based Paged Memory Management Support" 3053c427975SHyok S. Choi default y 3063c427975SHyok S. Choi help 3073c427975SHyok S. Choi Select if you want MMU-based virtualised addressing space 3083c427975SHyok S. Choi support by paged memory management. If unsure, say 'Y'. 3093c427975SHyok S. Choi 310e0c25d95SDaniel Cashmanconfig ARCH_MMAP_RND_BITS_MIN 311e0c25d95SDaniel Cashman default 8 312e0c25d95SDaniel Cashman 313e0c25d95SDaniel Cashmanconfig ARCH_MMAP_RND_BITS_MAX 314e0c25d95SDaniel Cashman default 14 if PAGE_OFFSET=0x40000000 315e0c25d95SDaniel Cashman default 15 if PAGE_OFFSET=0x80000000 316e0c25d95SDaniel Cashman default 16 317e0c25d95SDaniel Cashman 318ccf50e23SRussell King# 319ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option 320ccf50e23SRussell King# text. Please add new entries in the option alphabetic order. 321ccf50e23SRussell King# 3221da177e4SLinus Torvaldschoice 3231da177e4SLinus Torvalds prompt "ARM system type" 32470722803SArnd Bergmann default ARM_SINGLE_ARMV7M if !MMU 3251420b22bSArnd Bergmann default ARCH_MULTIPLATFORM if MMU 3261da177e4SLinus Torvalds 327387798b3SRob Herringconfig ARCH_MULTIPLATFORM 328387798b3SRob Herring bool "Allow multiple platforms to be selected" 329b1b3f49cSRussell King depends on MMU 330ddb902ccSRob Herring select ARCH_WANT_OPTIONAL_GPIOLIB 33142dc836dSOlof Johansson select ARM_HAS_SG_CHAIN 332387798b3SRob Herring select ARM_PATCH_PHYS_VIRT 333387798b3SRob Herring select AUTO_ZRELADDR 3346d0add40SRob Herring select CLKSRC_OF 33566314223SDinh Nguyen select COMMON_CLK 336ddb902ccSRob Herring select GENERIC_CLOCKEVENTS 33708d38bebSWill Deacon select MIGHT_HAVE_PCI 338387798b3SRob Herring select MULTI_IRQ_HANDLER 33966314223SDinh Nguyen select SPARSE_IRQ 34066314223SDinh Nguyen select USE_OF 34166314223SDinh Nguyen 3429c77bc43SStefan Agnerconfig ARM_SINGLE_ARMV7M 3439c77bc43SStefan Agner bool "ARMv7-M based platforms (Cortex-M0/M3/M4)" 3449c77bc43SStefan Agner depends on !MMU 3459c77bc43SStefan Agner select ARCH_WANT_OPTIONAL_GPIOLIB 3469c77bc43SStefan Agner select ARM_NVIC 347499f1640SStefan Agner select AUTO_ZRELADDR 3489c77bc43SStefan Agner select CLKSRC_OF 3499c77bc43SStefan Agner select COMMON_CLK 3509c77bc43SStefan Agner select CPU_V7M 3519c77bc43SStefan Agner select GENERIC_CLOCKEVENTS 3529c77bc43SStefan Agner select NO_IOPORT_MAP 3539c77bc43SStefan Agner select SPARSE_IRQ 3549c77bc43SStefan Agner select USE_OF 3559c77bc43SStefan Agner 3564af6fee1SDeepak Saxena 35793e22567SRussell Kingconfig ARCH_CLPS711X 35893e22567SRussell King bool "Cirrus Logic CLPS711x/EP721x/EP731x-based" 359a3b8d4a5SAlexander Shiyan select ARCH_REQUIRE_GPIOLIB 360ea7d1bc9SAlexander Shiyan select AUTO_ZRELADDR 361c99f72adSAlexander Shiyan select CLKSRC_MMIO 36293e22567SRussell King select COMMON_CLK 36393e22567SRussell King select CPU_ARM720T 3644a8355c4SAlexander Shiyan select GENERIC_CLOCKEVENTS 3656597619fSAlexander Shiyan select MFD_SYSCON 366e4e3a37dSAlexander Shiyan select SOC_BUS 36793e22567SRussell King help 36893e22567SRussell King Support for Cirrus Logic 711x/721x/731x based boards. 36993e22567SRussell King 370788c9700SRussell Kingconfig ARCH_GEMINI 371788c9700SRussell King bool "Cortina Systems Gemini" 372788c9700SRussell King select ARCH_REQUIRE_GPIOLIB 373f3372c01SLinus Walleij select CLKSRC_MMIO 374b1b3f49cSRussell King select CPU_FA526 375f3372c01SLinus Walleij select GENERIC_CLOCKEVENTS 376788c9700SRussell King help 377788c9700SRussell King Support for the Cortina Systems Gemini family SoCs 378788c9700SRussell King 3791da177e4SLinus Torvaldsconfig ARCH_EBSA110 3801da177e4SLinus Torvalds bool "EBSA-110" 381b1b3f49cSRussell King select ARCH_USES_GETTIMEOFFSET 382c750815eSRussell King select CPU_SA110 383f7e68bbfSRussell King select ISA 384c334bc15SRob Herring select NEED_MACH_IO_H 3850cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 386ce816fa8SUwe Kleine-König select NO_IOPORT_MAP 3871da177e4SLinus Torvalds help 3881da177e4SLinus Torvalds This is an evaluation board for the StrongARM processor available 389f6c8965aSMartin Michlmayr from Digital. It has limited hardware on-board, including an 3901da177e4SLinus Torvalds Ethernet interface, two PCMCIA sockets, two serial ports and a 3911da177e4SLinus Torvalds parallel port. 3921da177e4SLinus Torvalds 393e7736d47SLennert Buytenhekconfig ARCH_EP93XX 394e7736d47SLennert Buytenhek bool "EP93xx-based" 395b1b3f49cSRussell King select ARCH_HAS_HOLES_MEMORYMODEL 396b1b3f49cSRussell King select ARCH_REQUIRE_GPIOLIB 397e7736d47SLennert Buytenhek select ARM_AMBA 398b8824c9aSH Hartley Sweeten select ARM_PATCH_PHYS_VIRT 399e7736d47SLennert Buytenhek select ARM_VIC 400b8824c9aSH Hartley Sweeten select AUTO_ZRELADDR 4016d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 402000bc178SLinus Walleij select CLKSRC_MMIO 403b1b3f49cSRussell King select CPU_ARM920T 404000bc178SLinus Walleij select GENERIC_CLOCKEVENTS 405e7736d47SLennert Buytenhek help 406e7736d47SLennert Buytenhek This enables support for the Cirrus EP93xx series of CPUs. 407e7736d47SLennert Buytenhek 4081da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE 4091da177e4SLinus Torvalds bool "FootBridge" 410c750815eSRussell King select CPU_SA110 4111da177e4SLinus Torvalds select FOOTBRIDGE 4124e8d7637SRussell King select GENERIC_CLOCKEVENTS 413d0ee9f40SArnd Bergmann select HAVE_IDE 4148ef6e620SRob Herring select NEED_MACH_IO_H if !MMU 4150cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 416f999b8bdSMartin Michlmayr help 417f999b8bdSMartin Michlmayr Support for systems based on the DC21285 companion chip 418f999b8bdSMartin Michlmayr ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. 4191da177e4SLinus Torvalds 4204af6fee1SDeepak Saxenaconfig ARCH_NETX 4214af6fee1SDeepak Saxena bool "Hilscher NetX based" 422b1b3f49cSRussell King select ARM_VIC 423234b6cedSRussell King select CLKSRC_MMIO 424c750815eSRussell King select CPU_ARM926T 4252fcfe6b8SUwe Kleine-König select GENERIC_CLOCKEVENTS 426f999b8bdSMartin Michlmayr help 4274af6fee1SDeepak Saxena This enables support for systems based on the Hilscher NetX Soc 4284af6fee1SDeepak Saxena 4293b938be6SRussell Kingconfig ARCH_IOP13XX 4303b938be6SRussell King bool "IOP13xx-based" 4313b938be6SRussell King depends on MMU 432b1b3f49cSRussell King select CPU_XSC3 4330cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 43413a5045dSRob Herring select NEED_RET_TO_USER 435b1b3f49cSRussell King select PCI 436b1b3f49cSRussell King select PLAT_IOP 437b1b3f49cSRussell King select VMSPLIT_1G 43837ebbcffSThomas Gleixner select SPARSE_IRQ 4393b938be6SRussell King help 4403b938be6SRussell King Support for Intel's IOP13XX (XScale) family of processors. 4413b938be6SRussell King 4423f7e5815SLennert Buytenhekconfig ARCH_IOP32X 4433f7e5815SLennert Buytenhek bool "IOP32x-based" 444a4f7e763SRussell King depends on MMU 445b1b3f49cSRussell King select ARCH_REQUIRE_GPIOLIB 446c750815eSRussell King select CPU_XSCALE 447e9004f50SLinus Walleij select GPIO_IOP 44813a5045dSRob Herring select NEED_RET_TO_USER 449f7e68bbfSRussell King select PCI 450b1b3f49cSRussell King select PLAT_IOP 451f999b8bdSMartin Michlmayr help 4523f7e5815SLennert Buytenhek Support for Intel's 80219 and IOP32X (XScale) family of 4533f7e5815SLennert Buytenhek processors. 4543f7e5815SLennert Buytenhek 4553f7e5815SLennert Buytenhekconfig ARCH_IOP33X 4563f7e5815SLennert Buytenhek bool "IOP33x-based" 4573f7e5815SLennert Buytenhek depends on MMU 458b1b3f49cSRussell King select ARCH_REQUIRE_GPIOLIB 459c750815eSRussell King select CPU_XSCALE 460e9004f50SLinus Walleij select GPIO_IOP 46113a5045dSRob Herring select NEED_RET_TO_USER 4623f7e5815SLennert Buytenhek select PCI 463b1b3f49cSRussell King select PLAT_IOP 4643f7e5815SLennert Buytenhek help 4653f7e5815SLennert Buytenhek Support for Intel's IOP33X (XScale) family of processors. 4661da177e4SLinus Torvalds 4673b938be6SRussell Kingconfig ARCH_IXP4XX 4683b938be6SRussell King bool "IXP4xx-based" 469a4f7e763SRussell King depends on MMU 47058af4a24SRob Herring select ARCH_HAS_DMA_SET_COHERENT_MASK 471b1b3f49cSRussell King select ARCH_REQUIRE_GPIOLIB 47251aaf81fSRussell King select ARCH_SUPPORTS_BIG_ENDIAN 473234b6cedSRussell King select CLKSRC_MMIO 474c750815eSRussell King select CPU_XSCALE 475b1b3f49cSRussell King select DMABOUNCE if PCI 4763b938be6SRussell King select GENERIC_CLOCKEVENTS 4770b05da72SHans Ulli Kroll select MIGHT_HAVE_PCI 478c334bc15SRob Herring select NEED_MACH_IO_H 4799296d94dSFlorian Fainelli select USB_EHCI_BIG_ENDIAN_DESC 480171b3f0dSRussell King select USB_EHCI_BIG_ENDIAN_MMIO 481c4713074SLennert Buytenhek help 4823b938be6SRussell King Support for Intel's IXP4XX (XScale) family of processors. 483c4713074SLennert Buytenhek 484edabd38eSSaeed Bisharaconfig ARCH_DOVE 485edabd38eSSaeed Bishara bool "Marvell Dove" 486edabd38eSSaeed Bishara select ARCH_REQUIRE_GPIOLIB 487756b2531SSebastian Hesselbarth select CPU_PJ4 488edabd38eSSaeed Bishara select GENERIC_CLOCKEVENTS 4890f81bd43SRussell King select MIGHT_HAVE_PCI 490b8cd337cSArnd Bergmann select MULTI_IRQ_HANDLER 491171b3f0dSRussell King select MVEBU_MBUS 4929139acd1SSebastian Hesselbarth select PINCTRL 4939139acd1SSebastian Hesselbarth select PINCTRL_DOVE 494abcda1dcSThomas Petazzoni select PLAT_ORION_LEGACY 4955cdbe5d2SArnd Bergmann select SPARSE_IRQ 496c5d431e8SRussell King select PM_GENERIC_DOMAINS if PM 497edabd38eSSaeed Bishara help 498edabd38eSSaeed Bishara Support for the Marvell Dove SoC 88AP510 499edabd38eSSaeed Bishara 500c53c9cf6SAndrew Victorconfig ARCH_KS8695 501c53c9cf6SAndrew Victor bool "Micrel/Kendin KS8695" 50272880ad8SDaniel Silverstone select ARCH_REQUIRE_GPIOLIB 503c7e783d6SLinus Walleij select CLKSRC_MMIO 504b1b3f49cSRussell King select CPU_ARM922T 505c7e783d6SLinus Walleij select GENERIC_CLOCKEVENTS 506b1b3f49cSRussell King select NEED_MACH_MEMORY_H 507c53c9cf6SAndrew Victor help 508c53c9cf6SAndrew Victor Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based 509c53c9cf6SAndrew Victor System-on-Chip devices. 510c53c9cf6SAndrew Victor 511788c9700SRussell Kingconfig ARCH_W90X900 512788c9700SRussell King bool "Nuvoton W90X900 CPU" 513c52d3d68Swanzongshun select ARCH_REQUIRE_GPIOLIB 5146d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 5156fa5d5f7SRussell King select CLKSRC_MMIO 516b1b3f49cSRussell King select CPU_ARM926T 51758b5369eSwanzongshun select GENERIC_CLOCKEVENTS 518777f9bebSLennert Buytenhek help 519a8bc4eadSwanzongshun Support for Nuvoton (Winbond logic dept.) ARM9 processor, 520a8bc4eadSwanzongshun At present, the w90x900 has been renamed nuc900, regarding 521a8bc4eadSwanzongshun the ARM series product line, you can login the following 522a8bc4eadSwanzongshun link address to know more. 523a8bc4eadSwanzongshun 524a8bc4eadSwanzongshun <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ 525a8bc4eadSwanzongshun ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> 526585cf175STzachi Perelstein 52793e22567SRussell Kingconfig ARCH_LPC32XX 52893e22567SRussell King bool "NXP LPC32XX" 52993e22567SRussell King select ARCH_REQUIRE_GPIOLIB 53093e22567SRussell King select ARM_AMBA 5314073723aSRussell King select CLKDEV_LOOKUP 532c227f127SVladimir Zapolskiy select CLKSRC_LPC32XX 533c227f127SVladimir Zapolskiy select COMMON_CLK 53493e22567SRussell King select CPU_ARM926T 53593e22567SRussell King select GENERIC_CLOCKEVENTS 5368cb17b5eSVladimir Zapolskiy select MULTI_IRQ_HANDLER 5378cb17b5eSVladimir Zapolskiy select SPARSE_IRQ 53893e22567SRussell King select USE_OF 53993e22567SRussell King help 54093e22567SRussell King Support for the NXP LPC32XX family of processors 54193e22567SRussell King 5421da177e4SLinus Torvaldsconfig ARCH_PXA 5432c8086a5Seric miao bool "PXA2xx/PXA3xx-based" 544a4f7e763SRussell King depends on MMU 545b1b3f49cSRussell King select ARCH_MTD_XIP 546b1b3f49cSRussell King select ARCH_REQUIRE_GPIOLIB 547b1b3f49cSRussell King select ARM_CPU_SUSPEND if PM 548b1b3f49cSRussell King select AUTO_ZRELADDR 549a1c0a6adSRobert Jarzmik select COMMON_CLK 5506d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 551389d9b58SDaniel Lezcano select CLKSRC_PXA 552234b6cedSRussell King select CLKSRC_MMIO 5536f6caeaaSRobert Jarzmik select CLKSRC_OF 5542f202861SArnd Bergmann select CPU_XSCALE if !CPU_XSC3 555981d0f39SEric Miao select GENERIC_CLOCKEVENTS 556157d2644SHaojian Zhuang select GPIO_PXA 557b1b3f49cSRussell King select HAVE_IDE 558d6cf30caSRobert Jarzmik select IRQ_DOMAIN 559b1b3f49cSRussell King select MULTI_IRQ_HANDLER 560bd5ce433SEric Miao select PLAT_PXA 5616ac6b817SHaojian Zhuang select SPARSE_IRQ 562f999b8bdSMartin Michlmayr help 5632c8086a5Seric miao Support for Intel/Marvell's PXA2xx/PXA3xx processor line. 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvaldsconfig ARCH_RPC 5661da177e4SLinus Torvalds bool "RiscPC" 567868e87ccSRussell King depends on MMU 5681da177e4SLinus Torvalds select ARCH_ACORN 569a08b6b79Sviro@ZenIV.linux.org.uk select ARCH_MAY_HAVE_PC_FDC 57007f841b7SRussell King select ARCH_SPARSEMEM_ENABLE 5715cfc8ee0SJohn Stultz select ARCH_USES_GETTIMEOFFSET 572fa04e209SArnd Bergmann select CPU_SA110 573b1b3f49cSRussell King select FIQ 574d0ee9f40SArnd Bergmann select HAVE_IDE 575b1b3f49cSRussell King select HAVE_PATA_PLATFORM 576b1b3f49cSRussell King select ISA_DMA_API 577c334bc15SRob Herring select NEED_MACH_IO_H 5780cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 579ce816fa8SUwe Kleine-König select NO_IOPORT_MAP 5801da177e4SLinus Torvalds help 5811da177e4SLinus Torvalds On the Acorn Risc-PC, Linux can support the internal IDE disk and 5821da177e4SLinus Torvalds CD-ROM interface, serial and parallel port, and the floppy drive. 5831da177e4SLinus Torvalds 5841da177e4SLinus Torvaldsconfig ARCH_SA1100 5851da177e4SLinus Torvalds bool "SA1100-based" 586b1b3f49cSRussell King select ARCH_MTD_XIP 5877444a72eSMichael Buesch select ARCH_REQUIRE_GPIOLIB 588b1b3f49cSRussell King select ARCH_SPARSEMEM_ENABLE 589b1b3f49cSRussell King select CLKDEV_LOOKUP 590b1b3f49cSRussell King select CLKSRC_MMIO 591389d9b58SDaniel Lezcano select CLKSRC_PXA 592389d9b58SDaniel Lezcano select CLKSRC_OF if OF 593b1b3f49cSRussell King select CPU_FREQ 594b1b3f49cSRussell King select CPU_SA1100 595b1b3f49cSRussell King select GENERIC_CLOCKEVENTS 596d0ee9f40SArnd Bergmann select HAVE_IDE 5971eca42b4SDmitry Eremin-Solenikov select IRQ_DOMAIN 598b1b3f49cSRussell King select ISA 599affcab32SDmitry Eremin-Solenikov select MULTI_IRQ_HANDLER 6000cdc8b92SNicolas Pitre select NEED_MACH_MEMORY_H 601375dec92SRussell King select SPARSE_IRQ 602f999b8bdSMartin Michlmayr help 603f999b8bdSMartin Michlmayr Support for StrongARM 11x0 based boards. 6041da177e4SLinus Torvalds 605b130d5c2SKukjin Kimconfig ARCH_S3C24XX 606b130d5c2SKukjin Kim bool "Samsung S3C24XX SoCs" 60753650430SKukjin Kim select ARCH_REQUIRE_GPIOLIB 608335cce74SArnd Bergmann select ATAGS 609b1b3f49cSRussell King select CLKDEV_LOOKUP 6104280506aSTomasz Figa select CLKSRC_SAMSUNG_PWM 6117f78b6ebSRomain Naour select GENERIC_CLOCKEVENTS 612880cf071STomasz Figa select GPIO_SAMSUNG 61320676c15SKukjin Kim select HAVE_S3C2410_I2C if I2C 614b130d5c2SKukjin Kim select HAVE_S3C2410_WATCHDOG if WATCHDOG 615b1b3f49cSRussell King select HAVE_S3C_RTC if RTC_CLASS 61617453dd2SHeiko Stuebner select MULTI_IRQ_HANDLER 617c334bc15SRob Herring select NEED_MACH_IO_H 618cd8dc7aeSTomasz Figa select SAMSUNG_ATAGS 6191da177e4SLinus Torvalds help 620b130d5c2SKukjin Kim Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 621b130d5c2SKukjin Kim and S3C2450 SoCs based systems, such as the Simtec Electronics BAST 622b130d5c2SKukjin Kim (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the 623b130d5c2SKukjin Kim Samsung SMDK2410 development board (and derivatives). 62463b1f51bSBen Dooks 6257c6337e2SKevin Hilmanconfig ARCH_DAVINCI 6267c6337e2SKevin Hilman bool "TI DaVinci" 627b1b3f49cSRussell King select ARCH_HAS_HOLES_MEMORYMODEL 628dce1115bSDavid Brownell select ARCH_REQUIRE_GPIOLIB 6296d803ba7SJean-Christop PLAGNIOL-VILLARD select CLKDEV_LOOKUP 630ce32c5c5SArnd Bergmann select CPU_ARM926T 63120e9969bSDavid Brownell select GENERIC_ALLOCATOR 632b1b3f49cSRussell King select GENERIC_CLOCKEVENTS 633dc7ad3b3SRussell King select GENERIC_IRQ_CHIP 634b1b3f49cSRussell King select HAVE_IDE 635689e331fSSekhar Nori select USE_OF 636b1b3f49cSRussell King select ZONE_DMA 6377c6337e2SKevin Hilman help 6387c6337e2SKevin Hilman Support for TI's DaVinci platform. 6397c6337e2SKevin Hilman 640a0694861STony Lindgrenconfig ARCH_OMAP1 641a0694861STony Lindgren bool "TI OMAP1" 64200a36698SArnd Bergmann depends on MMU 643b1b3f49cSRussell King select ARCH_HAS_HOLES_MEMORYMODEL 644a0694861STony Lindgren select ARCH_OMAP 64521f47fbcSAlexey Charkov select ARCH_REQUIRE_GPIOLIB 646e9a91de7STony Prisk select CLKDEV_LOOKUP 647cee37e50Sviresh kumar select CLKSRC_MMIO 648b1b3f49cSRussell King select GENERIC_CLOCKEVENTS 649a0694861STony Lindgren select GENERIC_IRQ_CHIP 650a0694861STony Lindgren select HAVE_IDE 651a0694861STony Lindgren select IRQ_DOMAIN 652b694331cSTony Lindgren select MULTI_IRQ_HANDLER 653a0694861STony Lindgren select NEED_MACH_IO_H if PCCARD 654a0694861STony Lindgren select NEED_MACH_MEMORY_H 655685e2d08STony Lindgren select SPARSE_IRQ 65621f47fbcSAlexey Charkov help 657a0694861STony Lindgren Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx) 65802c981c0SBinghua Duan 6591da177e4SLinus Torvaldsendchoice 6601da177e4SLinus Torvalds 661387798b3SRob Herringmenu "Multiple platform selection" 662387798b3SRob Herring depends on ARCH_MULTIPLATFORM 663387798b3SRob Herring 664387798b3SRob Herringcomment "CPU Core family selection" 665387798b3SRob Herring 666f8afae40SArnd Bergmannconfig ARCH_MULTI_V4 667f8afae40SArnd Bergmann bool "ARMv4 based platforms (FA526)" 668f8afae40SArnd Bergmann depends on !ARCH_MULTI_V6_V7 669f8afae40SArnd Bergmann select ARCH_MULTI_V4_V5 670f8afae40SArnd Bergmann select CPU_FA526 671f8afae40SArnd Bergmann 672387798b3SRob Herringconfig ARCH_MULTI_V4T 673387798b3SRob Herring bool "ARMv4T based platforms (ARM720T, ARM920T, ...)" 674387798b3SRob Herring depends on !ARCH_MULTI_V6_V7 675b1b3f49cSRussell King select ARCH_MULTI_V4_V5 67624e860fbSArnd Bergmann select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \ 67724e860fbSArnd Bergmann CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \ 67824e860fbSArnd Bergmann CPU_ARM925T || CPU_ARM940T) 679387798b3SRob Herring 680387798b3SRob Herringconfig ARCH_MULTI_V5 681387798b3SRob Herring bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)" 682387798b3SRob Herring depends on !ARCH_MULTI_V6_V7 683b1b3f49cSRussell King select ARCH_MULTI_V4_V5 68412567bbdSAndrew Lunn select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \ 68524e860fbSArnd Bergmann CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \ 68624e860fbSArnd Bergmann CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON) 687387798b3SRob Herring 688387798b3SRob Herringconfig ARCH_MULTI_V4_V5 689387798b3SRob Herring bool 690387798b3SRob Herring 691387798b3SRob Herringconfig ARCH_MULTI_V6 6928dda05ccSStephen Boyd bool "ARMv6 based platforms (ARM11)" 693387798b3SRob Herring select ARCH_MULTI_V6_V7 69442f4754aSRob Herring select CPU_V6K 695387798b3SRob Herring 696387798b3SRob Herringconfig ARCH_MULTI_V7 6978dda05ccSStephen Boyd bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)" 698387798b3SRob Herring default y 699387798b3SRob Herring select ARCH_MULTI_V6_V7 700b1b3f49cSRussell King select CPU_V7 70190bc8ac7SRob Herring select HAVE_SMP 702387798b3SRob Herring 703387798b3SRob Herringconfig ARCH_MULTI_V6_V7 704387798b3SRob Herring bool 7059352b05bSRob Herring select MIGHT_HAVE_CACHE_L2X0 706387798b3SRob Herring 707387798b3SRob Herringconfig ARCH_MULTI_CPU_AUTO 708387798b3SRob Herring def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7) 709387798b3SRob Herring select ARCH_MULTI_V5 710387798b3SRob Herring 711387798b3SRob Herringendmenu 712387798b3SRob Herring 71305e2a3deSRob Herringconfig ARCH_VIRT 714e3246542SMasahiro Yamada bool "Dummy Virtual Machine" 715e3246542SMasahiro Yamada depends on ARCH_MULTI_V7 7164b8b5f25SRob Herring select ARM_AMBA 71705e2a3deSRob Herring select ARM_GIC 718*3ee80364SArnd Bergmann select ARM_GIC_V2M if PCI 7190b28f1dbSJean-Philippe Brucker select ARM_GIC_V3 72005e2a3deSRob Herring select ARM_PSCI 7214b8b5f25SRob Herring select HAVE_ARM_ARCH_TIMER 72205e2a3deSRob Herring 723ccf50e23SRussell King# 724ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname. However, plat-* 725ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the 726ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source. 727ccf50e23SRussell King# 7283e93a22bSGregory CLEMENTsource "arch/arm/mach-mvebu/Kconfig" 7293e93a22bSGregory CLEMENT 730445d9b30STsahee Zidenbergsource "arch/arm/mach-alpine/Kconfig" 731445d9b30STsahee Zidenberg 732590b460cSLars Perssonsource "arch/arm/mach-artpec/Kconfig" 733590b460cSLars Persson 734d9bfc86dSOleksij Rempelsource "arch/arm/mach-asm9260/Kconfig" 735d9bfc86dSOleksij Rempel 73695b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig" 73795b8f20fSRussell King 7381d22924eSAnders Bergsource "arch/arm/mach-axxia/Kconfig" 7391d22924eSAnders Berg 7408ac49e04SChristian Daudtsource "arch/arm/mach-bcm/Kconfig" 7418ac49e04SChristian Daudt 7421c37fa10SSebastian Hesselbarthsource "arch/arm/mach-berlin/Kconfig" 7431c37fa10SSebastian Hesselbarth 7441da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig" 7451da177e4SLinus Torvalds 746d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig" 747d94f944eSAnton Vorontsov 74895b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig" 74995b8f20fSRussell King 750df8d742eSBaruch Siachsource "arch/arm/mach-digicolor/Kconfig" 751df8d742eSBaruch Siach 75295b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig" 75395b8f20fSRussell King 754e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig" 755e7736d47SLennert Buytenhek 7561da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig" 7571da177e4SLinus Torvalds 75859d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig" 75959d3a193SPaulius Zaleckas 760387798b3SRob Herringsource "arch/arm/mach-highbank/Kconfig" 761387798b3SRob Herring 762389ee0c2SHaojian Zhuangsource "arch/arm/mach-hisi/Kconfig" 763389ee0c2SHaojian Zhuang 7641da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig" 7651da177e4SLinus Torvalds 7663f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig" 7673f7e5815SLennert Buytenhek 7683f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig" 7691da177e4SLinus Torvalds 770285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig" 771285f5fa7SDan Williams 7721da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig" 7731da177e4SLinus Torvalds 774828989adSSantosh Shilimkarsource "arch/arm/mach-keystone/Kconfig" 775828989adSSantosh Shilimkar 77695b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig" 77795b8f20fSRussell King 7783b8f5030SCarlo Caionesource "arch/arm/mach-meson/Kconfig" 7793b8f5030SCarlo Caione 78017723fd3SJonas Jensensource "arch/arm/mach-moxart/Kconfig" 78117723fd3SJonas Jensen 7828c2ed9bcSJoel Stanleysource "arch/arm/mach-aspeed/Kconfig" 7838c2ed9bcSJoel Stanley 784794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig" 785794d15b2SStanislav Samsonov 7863995eb82SShawn Guosource "arch/arm/mach-imx/Kconfig" 7871da177e4SLinus Torvalds 788f682a218SMatthias Bruggersource "arch/arm/mach-mediatek/Kconfig" 789f682a218SMatthias Brugger 7901d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig" 7911d3f33d5SShawn Guo 79295b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig" 79349cbe786SEric Miao 79495b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig" 79595b8f20fSRussell King 7969851ca57SDaniel Tangsource "arch/arm/mach-nspire/Kconfig" 7979851ca57SDaniel Tang 798d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig" 799d48af15eSTony Lindgren 800d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig" 8011da177e4SLinus Torvalds 8021dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig" 8031dbae815STony Lindgren 8049dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig" 805585cf175STzachi Perelstein 806387798b3SRob Herringsource "arch/arm/mach-picoxcell/Kconfig" 807387798b3SRob Herring 80895b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig" 80995b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig" 8101da177e4SLinus Torvalds 81195b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig" 81295b8f20fSRussell King 8138c9184b7SNeil Armstrongsource "arch/arm/mach-oxnas/Kconfig" 8148c9184b7SNeil Armstrong 8158fc1b0f8SKumar Galasource "arch/arm/mach-qcom/Kconfig" 8168fc1b0f8SKumar Gala 81795b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig" 81895b8f20fSRussell King 819d63dc051SHeiko Stuebnersource "arch/arm/mach-rockchip/Kconfig" 820d63dc051SHeiko Stuebner 82195b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig" 822edabd38eSSaeed Bishara 823387798b3SRob Herringsource "arch/arm/mach-socfpga/Kconfig" 824387798b3SRob Herring 825a7ed099fSArnd Bergmannsource "arch/arm/mach-spear/Kconfig" 826a21765a7SBen Dooks 82765ebcc11SSrinivas Kandagatlasource "arch/arm/mach-sti/Kconfig" 82865ebcc11SSrinivas Kandagatla 82985fd6d63SKukjin Kimsource "arch/arm/mach-s3c24xx/Kconfig" 8301da177e4SLinus Torvalds 831431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig" 832a08ab637SBen Dooks 833170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig" 834170f4e42SKukjin Kim 83583014579SKukjin Kimsource "arch/arm/mach-exynos/Kconfig" 836e509b289SRob Herringsource "arch/arm/plat-samsung/Kconfig" 837cc0e72b8SChanghwan Youn 838882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig" 8391da177e4SLinus Torvalds 8403b52634fSMaxime Ripardsource "arch/arm/mach-sunxi/Kconfig" 8413b52634fSMaxime Ripard 842156a0997SBarry Songsource "arch/arm/mach-prima2/Kconfig" 843156a0997SBarry Song 844d6de5b02SMarc Gonzalezsource "arch/arm/mach-tango/Kconfig" 845d6de5b02SMarc Gonzalez 846c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig" 847c5f80065SErik Gilling 84895b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig" 8491da177e4SLinus Torvalds 850ba56a987SMasahiro Yamadasource "arch/arm/mach-uniphier/Kconfig" 851ba56a987SMasahiro Yamada 85295b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig" 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig" 8551da177e4SLinus Torvalds 856ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig" 857420c34e4SRussell Kingsource "arch/arm/plat-versatile/Kconfig" 858ceade897SRussell King 8596f35f9a9STony Prisksource "arch/arm/mach-vt8500/Kconfig" 8606f35f9a9STony Prisk 8617ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig" 8627ec80ddfSwanzongshun 863acede515SJun Niesource "arch/arm/mach-zx/Kconfig" 864acede515SJun Nie 8659a45eb69SJosh Cartwrightsource "arch/arm/mach-zynq/Kconfig" 8669a45eb69SJosh Cartwright 867499f1640SStefan Agner# ARMv7-M architecture 868499f1640SStefan Agnerconfig ARCH_EFM32 869499f1640SStefan Agner bool "Energy Micro efm32" 870499f1640SStefan Agner depends on ARM_SINGLE_ARMV7M 871499f1640SStefan Agner select ARCH_REQUIRE_GPIOLIB 872499f1640SStefan Agner help 873499f1640SStefan Agner Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko 874499f1640SStefan Agner processors. 875499f1640SStefan Agner 876499f1640SStefan Agnerconfig ARCH_LPC18XX 877499f1640SStefan Agner bool "NXP LPC18xx/LPC43xx" 878499f1640SStefan Agner depends on ARM_SINGLE_ARMV7M 879499f1640SStefan Agner select ARCH_HAS_RESET_CONTROLLER 880499f1640SStefan Agner select ARM_AMBA 881499f1640SStefan Agner select CLKSRC_LPC32XX 882499f1640SStefan Agner select PINCTRL 883499f1640SStefan Agner help 884499f1640SStefan Agner Support for NXP's LPC18xx Cortex-M3 and LPC43xx Cortex-M4 885499f1640SStefan Agner high performance microcontrollers. 886499f1640SStefan Agner 887499f1640SStefan Agnerconfig ARCH_STM32 888499f1640SStefan Agner bool "STMicrolectronics STM32" 889499f1640SStefan Agner depends on ARM_SINGLE_ARMV7M 890499f1640SStefan Agner select ARCH_HAS_RESET_CONTROLLER 891499f1640SStefan Agner select ARMV7M_SYSTICK 89225263186SMaxime Coquelin select CLKSRC_STM32 893f64e9804SMaxime Coquelin select PINCTRL 894499f1640SStefan Agner select RESET_CONTROLLER 895499f1640SStefan Agner help 896499f1640SStefan Agner Support for STMicroelectronics STM32 processors. 897499f1640SStefan Agner 898fa65fc6bSMaxime Coquelinconfig MACH_STM32F429 899fa65fc6bSMaxime Coquelin bool "STMicrolectronics STM32F429" 900fa65fc6bSMaxime Coquelin depends on ARCH_STM32 901fa65fc6bSMaxime Coquelin default y 902fa65fc6bSMaxime Coquelin 9031847119dSVladimir Murzinconfig ARCH_MPS2 9041847119dSVladimir Murzin bool "ARM MPS2 paltform" 9051847119dSVladimir Murzin depends on ARM_SINGLE_ARMV7M 9061847119dSVladimir Murzin select ARM_AMBA 9071847119dSVladimir Murzin select CLKSRC_MPS2 9081847119dSVladimir Murzin help 9091847119dSVladimir Murzin Support for Cortex-M Prototyping System (or V2M-MPS2) which comes 9101847119dSVladimir Murzin with a range of available cores like Cortex-M3/M4/M7. 9111847119dSVladimir Murzin 9121847119dSVladimir Murzin Please, note that depends which Application Note is used memory map 9131847119dSVladimir Murzin for the platform may vary, so adjustment of RAM base might be needed. 9141847119dSVladimir Murzin 9151da177e4SLinus Torvalds# Definitions to make life easier 9161da177e4SLinus Torvaldsconfig ARCH_ACORN 9171da177e4SLinus Torvalds bool 9181da177e4SLinus Torvalds 9197ae1f7ecSLennert Buytenhekconfig PLAT_IOP 9207ae1f7ecSLennert Buytenhek bool 921469d3044SMikael Pettersson select GENERIC_CLOCKEVENTS 9227ae1f7ecSLennert Buytenhek 92369b02f6aSLennert Buytenhekconfig PLAT_ORION 92469b02f6aSLennert Buytenhek bool 925bfe45e0bSRussell King select CLKSRC_MMIO 926b1b3f49cSRussell King select COMMON_CLK 927dc7ad3b3SRussell King select GENERIC_IRQ_CHIP 928278b45b0SAndrew Lunn select IRQ_DOMAIN 92969b02f6aSLennert Buytenhek 930abcda1dcSThomas Petazzoniconfig PLAT_ORION_LEGACY 931abcda1dcSThomas Petazzoni bool 932abcda1dcSThomas Petazzoni select PLAT_ORION 933abcda1dcSThomas Petazzoni 934bd5ce433SEric Miaoconfig PLAT_PXA 935bd5ce433SEric Miao bool 936bd5ce433SEric Miao 937f4b8b319SRussell Kingconfig PLAT_VERSATILE 938f4b8b319SRussell King bool 939f4b8b319SRussell King 940d9a1beaaSAlexandre Courbotsource "arch/arm/firmware/Kconfig" 941d9a1beaaSAlexandre Courbot 9421da177e4SLinus Torvaldssource arch/arm/mm/Kconfig 9431da177e4SLinus Torvalds 944afe4b25eSLennert Buytenhekconfig IWMMXT 945d93003e8SSebastian Hesselbarth bool "Enable iWMMXt support" 946d93003e8SSebastian Hesselbarth depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B 947d93003e8SSebastian Hesselbarth default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B 948afe4b25eSLennert Buytenhek help 949afe4b25eSLennert Buytenhek Enable support for iWMMXt context switching at run time if 950afe4b25eSLennert Buytenhek running on a CPU that supports it. 951afe4b25eSLennert Buytenhek 95252108641Seric miaoconfig MULTI_IRQ_HANDLER 95352108641Seric miao bool 95452108641Seric miao help 95552108641Seric miao Allow each machine to specify it's own IRQ handler at run time. 95652108641Seric miao 9573b93e7b0SHyok S. Choiif !MMU 9583b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu" 9593b93e7b0SHyok S. Choiendif 9603b93e7b0SHyok S. Choi 9613e0a07f8SGregory CLEMENTconfig PJ4B_ERRATA_4742 9623e0a07f8SGregory CLEMENT bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation" 9633e0a07f8SGregory CLEMENT depends on CPU_PJ4B && MACH_ARMADA_370 9643e0a07f8SGregory CLEMENT default y 9653e0a07f8SGregory CLEMENT help 9663e0a07f8SGregory CLEMENT When coming out of either a Wait for Interrupt (WFI) or a Wait for 9673e0a07f8SGregory CLEMENT Event (WFE) IDLE states, a specific timing sensitivity exists between 9683e0a07f8SGregory CLEMENT the retiring WFI/WFE instructions and the newly issued subsequent 9693e0a07f8SGregory CLEMENT instructions. This sensitivity can result in a CPU hang scenario. 9703e0a07f8SGregory CLEMENT Workaround: 9713e0a07f8SGregory CLEMENT The software must insert either a Data Synchronization Barrier (DSB) 9723e0a07f8SGregory CLEMENT or Data Memory Barrier (DMB) command immediately after the WFI/WFE 9733e0a07f8SGregory CLEMENT instruction 9743e0a07f8SGregory CLEMENT 975f0c4b8d6SWill Deaconconfig ARM_ERRATA_326103 976f0c4b8d6SWill Deacon bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory" 977f0c4b8d6SWill Deacon depends on CPU_V6 978f0c4b8d6SWill Deacon help 979f0c4b8d6SWill Deacon Executing a SWP instruction to read-only memory does not set bit 11 980f0c4b8d6SWill Deacon of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to 981f0c4b8d6SWill Deacon treat the access as a read, preventing a COW from occurring and 982f0c4b8d6SWill Deacon causing the faulting task to livelock. 983f0c4b8d6SWill Deacon 9849cba3cccSCatalin Marinasconfig ARM_ERRATA_411920 9859cba3cccSCatalin Marinas bool "ARM errata: Invalidation of the Instruction Cache operation can fail" 986e399b1a4SRussell King depends on CPU_V6 || CPU_V6K 9879cba3cccSCatalin Marinas help 9889cba3cccSCatalin Marinas Invalidation of the Instruction Cache operation can 9899cba3cccSCatalin Marinas fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. 9909cba3cccSCatalin Marinas It does not affect the MPCore. This option enables the ARM Ltd. 9919cba3cccSCatalin Marinas recommended workaround. 9929cba3cccSCatalin Marinas 9937ce236fcSCatalin Marinasconfig ARM_ERRATA_430973 9947ce236fcSCatalin Marinas bool "ARM errata: Stale prediction on replaced interworking branch" 9957ce236fcSCatalin Marinas depends on CPU_V7 9967ce236fcSCatalin Marinas help 9977ce236fcSCatalin Marinas This option enables the workaround for the 430973 Cortex-A8 99879403cdaSRussell King r1p* erratum. If a code sequence containing an ARM/Thumb 9997ce236fcSCatalin Marinas interworking branch is replaced with another code sequence at the 10007ce236fcSCatalin Marinas same virtual address, whether due to self-modifying code or virtual 10017ce236fcSCatalin Marinas to physical address re-mapping, Cortex-A8 does not recover from the 10027ce236fcSCatalin Marinas stale interworking branch prediction. This results in Cortex-A8 10037ce236fcSCatalin Marinas executing the new code sequence in the incorrect ARM or Thumb state. 10047ce236fcSCatalin Marinas The workaround enables the BTB/BTAC operations by setting ACTLR.IBE 10057ce236fcSCatalin Marinas and also flushes the branch target cache at every context switch. 10067ce236fcSCatalin Marinas Note that setting specific bits in the ACTLR register may not be 10077ce236fcSCatalin Marinas available in non-secure mode. 10087ce236fcSCatalin Marinas 1009855c551fSCatalin Marinasconfig ARM_ERRATA_458693 1010855c551fSCatalin Marinas bool "ARM errata: Processor deadlock when a false hazard is created" 1011855c551fSCatalin Marinas depends on CPU_V7 101262e4d357SRob Herring depends on !ARCH_MULTIPLATFORM 1013855c551fSCatalin Marinas help 1014855c551fSCatalin Marinas This option enables the workaround for the 458693 Cortex-A8 (r2p0) 1015855c551fSCatalin Marinas erratum. For very specific sequences of memory operations, it is 1016855c551fSCatalin Marinas possible for a hazard condition intended for a cache line to instead 1017855c551fSCatalin Marinas be incorrectly associated with a different cache line. This false 1018855c551fSCatalin Marinas hazard might then cause a processor deadlock. The workaround enables 1019855c551fSCatalin Marinas the L1 caching of the NEON accesses and disables the PLD instruction 1020855c551fSCatalin Marinas in the ACTLR register. Note that setting specific bits in the ACTLR 1021855c551fSCatalin Marinas register may not be available in non-secure mode. 1022855c551fSCatalin Marinas 10230516e464SCatalin Marinasconfig ARM_ERRATA_460075 10240516e464SCatalin Marinas bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" 10250516e464SCatalin Marinas depends on CPU_V7 102662e4d357SRob Herring depends on !ARCH_MULTIPLATFORM 10270516e464SCatalin Marinas help 10280516e464SCatalin Marinas This option enables the workaround for the 460075 Cortex-A8 (r2p0) 10290516e464SCatalin Marinas erratum. Any asynchronous access to the L2 cache may encounter a 10300516e464SCatalin Marinas situation in which recent store transactions to the L2 cache are lost 10310516e464SCatalin Marinas and overwritten with stale memory contents from external memory. The 10320516e464SCatalin Marinas workaround disables the write-allocate mode for the L2 cache via the 10330516e464SCatalin Marinas ACTLR register. Note that setting specific bits in the ACTLR register 10340516e464SCatalin Marinas may not be available in non-secure mode. 10350516e464SCatalin Marinas 10369f05027cSWill Deaconconfig ARM_ERRATA_742230 10379f05027cSWill Deacon bool "ARM errata: DMB operation may be faulty" 10389f05027cSWill Deacon depends on CPU_V7 && SMP 103962e4d357SRob Herring depends on !ARCH_MULTIPLATFORM 10409f05027cSWill Deacon help 10419f05027cSWill Deacon This option enables the workaround for the 742230 Cortex-A9 10429f05027cSWill Deacon (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction 10439f05027cSWill Deacon between two write operations may not ensure the correct visibility 10449f05027cSWill Deacon ordering of the two writes. This workaround sets a specific bit in 10459f05027cSWill Deacon the diagnostic register of the Cortex-A9 which causes the DMB 10469f05027cSWill Deacon instruction to behave as a DSB, ensuring the correct behaviour of 10479f05027cSWill Deacon the two writes. 10489f05027cSWill Deacon 1049a672e99bSWill Deaconconfig ARM_ERRATA_742231 1050a672e99bSWill Deacon bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" 1051a672e99bSWill Deacon depends on CPU_V7 && SMP 105262e4d357SRob Herring depends on !ARCH_MULTIPLATFORM 1053a672e99bSWill Deacon help 1054a672e99bSWill Deacon This option enables the workaround for the 742231 Cortex-A9 1055a672e99bSWill Deacon (r2p0..r2p2) erratum. Under certain conditions, specific to the 1056a672e99bSWill Deacon Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode, 1057a672e99bSWill Deacon accessing some data located in the same cache line, may get corrupted 1058a672e99bSWill Deacon data due to bad handling of the address hazard when the line gets 1059a672e99bSWill Deacon replaced from one of the CPUs at the same time as another CPU is 1060a672e99bSWill Deacon accessing it. This workaround sets specific bits in the diagnostic 1061a672e99bSWill Deacon register of the Cortex-A9 which reduces the linefill issuing 1062a672e99bSWill Deacon capabilities of the processor. 1063a672e99bSWill Deacon 106469155794SJon Medhurstconfig ARM_ERRATA_643719 106569155794SJon Medhurst bool "ARM errata: LoUIS bit field in CLIDR register is incorrect" 106669155794SJon Medhurst depends on CPU_V7 && SMP 1067e5a5de44SRussell King default y 106869155794SJon Medhurst help 106969155794SJon Medhurst This option enables the workaround for the 643719 Cortex-A9 (prior to 107069155794SJon Medhurst r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR 107169155794SJon Medhurst register returns zero when it should return one. The workaround 107269155794SJon Medhurst corrects this value, ensuring cache maintenance operations which use 107369155794SJon Medhurst it behave as intended and avoiding data corruption. 107469155794SJon Medhurst 1075cdf357f1SWill Deaconconfig ARM_ERRATA_720789 1076cdf357f1SWill Deacon bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" 1077e66dc745SDave Martin depends on CPU_V7 1078cdf357f1SWill Deacon help 1079cdf357f1SWill Deacon This option enables the workaround for the 720789 Cortex-A9 (prior to 1080cdf357f1SWill Deacon r2p0) erratum. A faulty ASID can be sent to the other CPUs for the 1081cdf357f1SWill Deacon broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. 1082cdf357f1SWill Deacon As a consequence of this erratum, some TLB entries which should be 1083cdf357f1SWill Deacon invalidated are not, resulting in an incoherency in the system page 1084cdf357f1SWill Deacon tables. The workaround changes the TLB flushing routines to invalidate 1085cdf357f1SWill Deacon entries regardless of the ASID. 1086475d92fcSWill Deacon 1087475d92fcSWill Deaconconfig ARM_ERRATA_743622 1088475d92fcSWill Deacon bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" 1089475d92fcSWill Deacon depends on CPU_V7 109062e4d357SRob Herring depends on !ARCH_MULTIPLATFORM 1091475d92fcSWill Deacon help 1092475d92fcSWill Deacon This option enables the workaround for the 743622 Cortex-A9 1093efbc74acSWill Deacon (r2p*) erratum. Under very rare conditions, a faulty 1094475d92fcSWill Deacon optimisation in the Cortex-A9 Store Buffer may lead to data 1095475d92fcSWill Deacon corruption. This workaround sets a specific bit in the diagnostic 1096475d92fcSWill Deacon register of the Cortex-A9 which disables the Store Buffer 1097475d92fcSWill Deacon optimisation, preventing the defect from occurring. This has no 1098475d92fcSWill Deacon visible impact on the overall performance or power consumption of the 1099475d92fcSWill Deacon processor. 1100475d92fcSWill Deacon 11019a27c27cSWill Deaconconfig ARM_ERRATA_751472 11029a27c27cSWill Deacon bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation" 1103ba90c516SDave Martin depends on CPU_V7 110462e4d357SRob Herring depends on !ARCH_MULTIPLATFORM 11059a27c27cSWill Deacon help 11069a27c27cSWill Deacon This option enables the workaround for the 751472 Cortex-A9 (prior 11079a27c27cSWill Deacon to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the 11089a27c27cSWill Deacon completion of a following broadcasted operation if the second 11099a27c27cSWill Deacon operation is received by a CPU before the ICIALLUIS has completed, 11109a27c27cSWill Deacon potentially leading to corrupted entries in the cache or TLB. 11119a27c27cSWill Deacon 1112fcbdc5feSWill Deaconconfig ARM_ERRATA_754322 1113fcbdc5feSWill Deacon bool "ARM errata: possible faulty MMU translations following an ASID switch" 1114fcbdc5feSWill Deacon depends on CPU_V7 1115fcbdc5feSWill Deacon help 1116fcbdc5feSWill Deacon This option enables the workaround for the 754322 Cortex-A9 (r2p*, 1117fcbdc5feSWill Deacon r3p*) erratum. A speculative memory access may cause a page table walk 1118fcbdc5feSWill Deacon which starts prior to an ASID switch but completes afterwards. This 1119fcbdc5feSWill Deacon can populate the micro-TLB with a stale entry which may be hit with 1120fcbdc5feSWill Deacon the new ASID. This workaround places two dsb instructions in the mm 1121fcbdc5feSWill Deacon switching code so that no page table walks can cross the ASID switch. 1122fcbdc5feSWill Deacon 11235dab26afSWill Deaconconfig ARM_ERRATA_754327 11245dab26afSWill Deacon bool "ARM errata: no automatic Store Buffer drain" 11255dab26afSWill Deacon depends on CPU_V7 && SMP 11265dab26afSWill Deacon help 11275dab26afSWill Deacon This option enables the workaround for the 754327 Cortex-A9 (prior to 11285dab26afSWill Deacon r2p0) erratum. The Store Buffer does not have any automatic draining 11295dab26afSWill Deacon mechanism and therefore a livelock may occur if an external agent 11305dab26afSWill Deacon continuously polls a memory location waiting to observe an update. 11315dab26afSWill Deacon This workaround defines cpu_relax() as smp_mb(), preventing correctly 11325dab26afSWill Deacon written polling loops from denying visibility of updates to memory. 11335dab26afSWill Deacon 1134145e10e1SCatalin Marinasconfig ARM_ERRATA_364296 1135145e10e1SCatalin Marinas bool "ARM errata: Possible cache data corruption with hit-under-miss enabled" 1136fd832478SFabio Estevam depends on CPU_V6 1137145e10e1SCatalin Marinas help 1138145e10e1SCatalin Marinas This options enables the workaround for the 364296 ARM1136 1139145e10e1SCatalin Marinas r0p2 erratum (possible cache data corruption with 1140145e10e1SCatalin Marinas hit-under-miss enabled). It sets the undocumented bit 31 in 1141145e10e1SCatalin Marinas the auxiliary control register and the FI bit in the control 1142145e10e1SCatalin Marinas register, thus disabling hit-under-miss without putting the 1143145e10e1SCatalin Marinas processor into full low interrupt latency mode. ARM11MPCore 1144145e10e1SCatalin Marinas is not affected. 1145145e10e1SCatalin Marinas 1146f630c1bdSWill Deaconconfig ARM_ERRATA_764369 1147f630c1bdSWill Deacon bool "ARM errata: Data cache line maintenance operation by MVA may not succeed" 1148f630c1bdSWill Deacon depends on CPU_V7 && SMP 1149f630c1bdSWill Deacon help 1150f630c1bdSWill Deacon This option enables the workaround for erratum 764369 1151f630c1bdSWill Deacon affecting Cortex-A9 MPCore with two or more processors (all 1152f630c1bdSWill Deacon current revisions). Under certain timing circumstances, a data 1153f630c1bdSWill Deacon cache line maintenance operation by MVA targeting an Inner 1154f630c1bdSWill Deacon Shareable memory region may fail to proceed up to either the 1155f630c1bdSWill Deacon Point of Coherency or to the Point of Unification of the 1156f630c1bdSWill Deacon system. This workaround adds a DSB instruction before the 1157f630c1bdSWill Deacon relevant cache maintenance functions and sets a specific bit 1158f630c1bdSWill Deacon in the diagnostic control register of the SCU. 1159f630c1bdSWill Deacon 11607253b85cSSimon Hormanconfig ARM_ERRATA_775420 11617253b85cSSimon Horman bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock" 11627253b85cSSimon Horman depends on CPU_V7 11637253b85cSSimon Horman help 11647253b85cSSimon Horman This option enables the workaround for the 775420 Cortex-A9 (r2p2, 11657253b85cSSimon Horman r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance 11667253b85cSSimon Horman operation aborts with MMU exception, it might cause the processor 11677253b85cSSimon Horman to deadlock. This workaround puts DSB before executing ISB if 11687253b85cSSimon Horman an abort may occur on cache maintenance. 11697253b85cSSimon Horman 117093dc6887SCatalin Marinasconfig ARM_ERRATA_798181 117193dc6887SCatalin Marinas bool "ARM errata: TLBI/DSB failure on Cortex-A15" 117293dc6887SCatalin Marinas depends on CPU_V7 && SMP 117393dc6887SCatalin Marinas help 117493dc6887SCatalin Marinas On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not 117593dc6887SCatalin Marinas adequately shooting down all use of the old entries. This 117693dc6887SCatalin Marinas option enables the Linux kernel workaround for this erratum 117793dc6887SCatalin Marinas which sends an IPI to the CPUs that are running the same ASID 117893dc6887SCatalin Marinas as the one being invalidated. 117993dc6887SCatalin Marinas 118084b6504fSWill Deaconconfig ARM_ERRATA_773022 118184b6504fSWill Deacon bool "ARM errata: incorrect instructions may be executed from loop buffer" 118284b6504fSWill Deacon depends on CPU_V7 118384b6504fSWill Deacon help 118484b6504fSWill Deacon This option enables the workaround for the 773022 Cortex-A15 118584b6504fSWill Deacon (up to r0p4) erratum. In certain rare sequences of code, the 118684b6504fSWill Deacon loop buffer may deliver incorrect instructions. This 118784b6504fSWill Deacon workaround disables the loop buffer to avoid the erratum. 118884b6504fSWill Deacon 11891da177e4SLinus Torvaldsendmenu 11901da177e4SLinus Torvalds 11911da177e4SLinus Torvaldssource "arch/arm/common/Kconfig" 11921da177e4SLinus Torvalds 11931da177e4SLinus Torvaldsmenu "Bus support" 11941da177e4SLinus Torvalds 11951da177e4SLinus Torvaldsconfig ISA 11961da177e4SLinus Torvalds bool 11971da177e4SLinus Torvalds help 11981da177e4SLinus Torvalds Find out whether you have ISA slots on your motherboard. ISA is the 11991da177e4SLinus Torvalds name of a bus system, i.e. the way the CPU talks to the other stuff 12001da177e4SLinus Torvalds inside your box. Other bus systems are PCI, EISA, MicroChannel 12011da177e4SLinus Torvalds (MCA) or VESA. ISA is an older system, now being displaced by PCI; 12021da177e4SLinus Torvalds newer boards don't support it. If you have ISA, say Y, otherwise N. 12031da177e4SLinus Torvalds 1204065909b9SRussell King# Select ISA DMA controller support 12051da177e4SLinus Torvaldsconfig ISA_DMA 12061da177e4SLinus Torvalds bool 1207065909b9SRussell King select ISA_DMA_API 12081da177e4SLinus Torvalds 1209065909b9SRussell King# Select ISA DMA interface 12105cae841bSAl Viroconfig ISA_DMA_API 12115cae841bSAl Viro bool 12125cae841bSAl Viro 12131da177e4SLinus Torvaldsconfig PCI 12140b05da72SHans Ulli Kroll bool "PCI support" if MIGHT_HAVE_PCI 12151da177e4SLinus Torvalds help 12161da177e4SLinus Torvalds Find out whether you have a PCI motherboard. PCI is the name of a 12171da177e4SLinus Torvalds bus system, i.e. the way the CPU talks to the other stuff inside 12181da177e4SLinus Torvalds your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 12191da177e4SLinus Torvalds VESA. If you have PCI, say Y, otherwise N. 12201da177e4SLinus Torvalds 122152882173SAnton Vorontsovconfig PCI_DOMAINS 122252882173SAnton Vorontsov bool 122352882173SAnton Vorontsov depends on PCI 122452882173SAnton Vorontsov 12258c7d1474SLorenzo Pieralisiconfig PCI_DOMAINS_GENERIC 12268c7d1474SLorenzo Pieralisi def_bool PCI_DOMAINS 12278c7d1474SLorenzo Pieralisi 1228b080ac8aSMarcelo Roberto Jimenezconfig PCI_NANOENGINE 1229b080ac8aSMarcelo Roberto Jimenez bool "BSE nanoEngine PCI support" 1230b080ac8aSMarcelo Roberto Jimenez depends on SA1100_NANOENGINE 1231b080ac8aSMarcelo Roberto Jimenez help 1232b080ac8aSMarcelo Roberto Jimenez Enable PCI on the BSE nanoEngine board. 1233b080ac8aSMarcelo Roberto Jimenez 123436e23590SMatthew Wilcoxconfig PCI_SYSCALL 123536e23590SMatthew Wilcox def_bool PCI 123636e23590SMatthew Wilcox 1237a0113a99SMike Rapoportconfig PCI_HOST_ITE8152 1238a0113a99SMike Rapoport bool 1239a0113a99SMike Rapoport depends on PCI && MACH_ARMCORE 1240a0113a99SMike Rapoport default y 1241a0113a99SMike Rapoport select DMABOUNCE 1242a0113a99SMike Rapoport 12431da177e4SLinus Torvaldssource "drivers/pci/Kconfig" 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig" 12461da177e4SLinus Torvalds 12471da177e4SLinus Torvaldsendmenu 12481da177e4SLinus Torvalds 12491da177e4SLinus Torvaldsmenu "Kernel Features" 12501da177e4SLinus Torvalds 12513b55658aSDave Martinconfig HAVE_SMP 12523b55658aSDave Martin bool 12533b55658aSDave Martin help 12543b55658aSDave Martin This option should be selected by machines which have an SMP- 12553b55658aSDave Martin capable CPU. 12563b55658aSDave Martin 12573b55658aSDave Martin The only effect of this option is to make the SMP-related 12583b55658aSDave Martin options available to the user for configuration. 12593b55658aSDave Martin 12601da177e4SLinus Torvaldsconfig SMP 1261bb2d8130SRussell King bool "Symmetric Multi-Processing" 1262fbb4ddacSRussell King depends on CPU_V6K || CPU_V7 1263bc28248eSRussell King depends on GENERIC_CLOCKEVENTS 12643b55658aSDave Martin depends on HAVE_SMP 1265801bb21cSJonathan Austin depends on MMU || ARM_MPU 12660361748fSArnd Bergmann select IRQ_WORK 12671da177e4SLinus Torvalds help 12681da177e4SLinus Torvalds This enables support for systems with more than one CPU. If you have 12694a474157SRobert Graffham a system with only one CPU, say N. If you have a system with more 12704a474157SRobert Graffham than one CPU, say Y. 12711da177e4SLinus Torvalds 12724a474157SRobert Graffham If you say N here, the kernel will run on uni- and multiprocessor 12731da177e4SLinus Torvalds machines, but will use only one CPU of a multiprocessor machine. If 12744a474157SRobert Graffham you say Y here, the kernel will run on many, but not all, 12754a474157SRobert Graffham uniprocessor machines. On a uniprocessor machine, the kernel 12764a474157SRobert Graffham will run faster if you say N here. 12771da177e4SLinus Torvalds 1278395cf969SPaul Bolle See also <file:Documentation/x86/i386/IO-APIC.txt>, 12791da177e4SLinus Torvalds <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at 128050a23e6eSJustin P. Mattock <http://tldp.org/HOWTO/SMP-HOWTO.html>. 12811da177e4SLinus Torvalds 12821da177e4SLinus Torvalds If you don't know what to do here, say N. 12831da177e4SLinus Torvalds 1284f00ec48fSRussell Kingconfig SMP_ON_UP 12855744ff43SRussell King bool "Allow booting SMP kernel on uniprocessor systems" 1286801bb21cSJonathan Austin depends on SMP && !XIP_KERNEL && MMU 1287f00ec48fSRussell King default y 1288f00ec48fSRussell King help 1289f00ec48fSRussell King SMP kernels contain instructions which fail on non-SMP processors. 1290f00ec48fSRussell King Enabling this option allows the kernel to modify itself to make 1291f00ec48fSRussell King these instructions safe. Disabling it allows about 1K of space 1292f00ec48fSRussell King savings. 1293f00ec48fSRussell King 1294f00ec48fSRussell King If you don't know what to do here, say Y. 1295f00ec48fSRussell King 1296c9018aabSVincent Guittotconfig ARM_CPU_TOPOLOGY 1297c9018aabSVincent Guittot bool "Support cpu topology definition" 1298c9018aabSVincent Guittot depends on SMP && CPU_V7 1299c9018aabSVincent Guittot default y 1300c9018aabSVincent Guittot help 1301c9018aabSVincent Guittot Support ARM cpu topology definition. The MPIDR register defines 1302c9018aabSVincent Guittot affinity between processors which is then used to describe the cpu 1303c9018aabSVincent Guittot topology of an ARM System. 1304c9018aabSVincent Guittot 1305c9018aabSVincent Guittotconfig SCHED_MC 1306c9018aabSVincent Guittot bool "Multi-core scheduler support" 1307c9018aabSVincent Guittot depends on ARM_CPU_TOPOLOGY 1308c9018aabSVincent Guittot help 1309c9018aabSVincent Guittot Multi-core scheduler support improves the CPU scheduler's decision 1310c9018aabSVincent Guittot making when dealing with multi-core CPU chips at a cost of slightly 1311c9018aabSVincent Guittot increased overhead in some places. If unsure say N here. 1312c9018aabSVincent Guittot 1313c9018aabSVincent Guittotconfig SCHED_SMT 1314c9018aabSVincent Guittot bool "SMT scheduler support" 1315c9018aabSVincent Guittot depends on ARM_CPU_TOPOLOGY 1316c9018aabSVincent Guittot help 1317c9018aabSVincent Guittot Improves the CPU scheduler's decision making when dealing with 1318c9018aabSVincent Guittot MultiThreading at a cost of slightly increased overhead in some 1319c9018aabSVincent Guittot places. If unsure say N here. 1320c9018aabSVincent Guittot 1321a8cbcd92SRussell Kingconfig HAVE_ARM_SCU 1322a8cbcd92SRussell King bool 1323a8cbcd92SRussell King help 1324a8cbcd92SRussell King This option enables support for the ARM system coherency unit 1325a8cbcd92SRussell King 13268a4da6e3SMark Rutlandconfig HAVE_ARM_ARCH_TIMER 1327022c03a2SMarc Zyngier bool "Architected timer support" 1328022c03a2SMarc Zyngier depends on CPU_V7 13298a4da6e3SMark Rutland select ARM_ARCH_TIMER 13300c403462SWill Deacon select GENERIC_CLOCKEVENTS 1331022c03a2SMarc Zyngier help 1332022c03a2SMarc Zyngier This option enables support for the ARM architected timer 1333022c03a2SMarc Zyngier 1334f32f4ce2SRussell Kingconfig HAVE_ARM_TWD 1335f32f4ce2SRussell King bool 1336da4a686aSRob Herring select CLKSRC_OF if OF 1337f32f4ce2SRussell King help 1338f32f4ce2SRussell King This options enables support for the ARM timer and watchdog unit 1339f32f4ce2SRussell King 1340e8db288eSNicolas Pitreconfig MCPM 1341e8db288eSNicolas Pitre bool "Multi-Cluster Power Management" 1342e8db288eSNicolas Pitre depends on CPU_V7 && SMP 1343e8db288eSNicolas Pitre help 1344e8db288eSNicolas Pitre This option provides the common power management infrastructure 1345e8db288eSNicolas Pitre for (multi-)cluster based systems, such as big.LITTLE based 1346e8db288eSNicolas Pitre systems. 1347e8db288eSNicolas Pitre 1348ebf4a5c5SHaojian Zhuangconfig MCPM_QUAD_CLUSTER 1349ebf4a5c5SHaojian Zhuang bool 1350ebf4a5c5SHaojian Zhuang depends on MCPM 1351ebf4a5c5SHaojian Zhuang help 1352ebf4a5c5SHaojian Zhuang To avoid wasting resources unnecessarily, MCPM only supports up 1353ebf4a5c5SHaojian Zhuang to 2 clusters by default. 1354ebf4a5c5SHaojian Zhuang Platforms with 3 or 4 clusters that use MCPM must select this 1355ebf4a5c5SHaojian Zhuang option to allow the additional clusters to be managed. 1356ebf4a5c5SHaojian Zhuang 13571c33be57SNicolas Pitreconfig BIG_LITTLE 13581c33be57SNicolas Pitre bool "big.LITTLE support (Experimental)" 13591c33be57SNicolas Pitre depends on CPU_V7 && SMP 13601c33be57SNicolas Pitre select MCPM 13611c33be57SNicolas Pitre help 13621c33be57SNicolas Pitre This option enables support selections for the big.LITTLE 13631c33be57SNicolas Pitre system architecture. 13641c33be57SNicolas Pitre 13651c33be57SNicolas Pitreconfig BL_SWITCHER 13661c33be57SNicolas Pitre bool "big.LITTLE switcher support" 13676c044fecSArnd Bergmann depends on BIG_LITTLE && MCPM && HOTPLUG_CPU && ARM_GIC 136851aaf81fSRussell King select CPU_PM 13691c33be57SNicolas Pitre help 13701c33be57SNicolas Pitre The big.LITTLE "switcher" provides the core functionality to 13711c33be57SNicolas Pitre transparently handle transition between a cluster of A15's 13721c33be57SNicolas Pitre and a cluster of A7's in a big.LITTLE system. 13731c33be57SNicolas Pitre 1374b22537c6SNicolas Pitreconfig BL_SWITCHER_DUMMY_IF 1375b22537c6SNicolas Pitre tristate "Simple big.LITTLE switcher user interface" 1376b22537c6SNicolas Pitre depends on BL_SWITCHER && DEBUG_KERNEL 1377b22537c6SNicolas Pitre help 1378b22537c6SNicolas Pitre This is a simple and dummy char dev interface to control 1379b22537c6SNicolas Pitre the big.LITTLE switcher core code. It is meant for 1380b22537c6SNicolas Pitre debugging purposes only. 1381b22537c6SNicolas Pitre 13828d5796d2SLennert Buytenhekchoice 13838d5796d2SLennert Buytenhek prompt "Memory split" 1384006fa259SRussell King depends on MMU 13858d5796d2SLennert Buytenhek default VMSPLIT_3G 13868d5796d2SLennert Buytenhek help 13878d5796d2SLennert Buytenhek Select the desired split between kernel and user memory. 13888d5796d2SLennert Buytenhek 13898d5796d2SLennert Buytenhek If you are not absolutely sure what you are doing, leave this 13908d5796d2SLennert Buytenhek option alone! 13918d5796d2SLennert Buytenhek 13928d5796d2SLennert Buytenhek config VMSPLIT_3G 13938d5796d2SLennert Buytenhek bool "3G/1G user/kernel split" 139463ce446cSNicolas Pitre config VMSPLIT_3G_OPT 139563ce446cSNicolas Pitre bool "3G/1G user/kernel split (for full 1G low memory)" 13968d5796d2SLennert Buytenhek config VMSPLIT_2G 13978d5796d2SLennert Buytenhek bool "2G/2G user/kernel split" 13988d5796d2SLennert Buytenhek config VMSPLIT_1G 13998d5796d2SLennert Buytenhek bool "1G/3G user/kernel split" 14008d5796d2SLennert Buytenhekendchoice 14018d5796d2SLennert Buytenhek 14028d5796d2SLennert Buytenhekconfig PAGE_OFFSET 14038d5796d2SLennert Buytenhek hex 1404006fa259SRussell King default PHYS_OFFSET if !MMU 14058d5796d2SLennert Buytenhek default 0x40000000 if VMSPLIT_1G 14068d5796d2SLennert Buytenhek default 0x80000000 if VMSPLIT_2G 140763ce446cSNicolas Pitre default 0xB0000000 if VMSPLIT_3G_OPT 14088d5796d2SLennert Buytenhek default 0xC0000000 14098d5796d2SLennert Buytenhek 14101da177e4SLinus Torvaldsconfig NR_CPUS 14111da177e4SLinus Torvalds int "Maximum number of CPUs (2-32)" 14121da177e4SLinus Torvalds range 2 32 14131da177e4SLinus Torvalds depends on SMP 14141da177e4SLinus Torvalds default "4" 14151da177e4SLinus Torvalds 1416a054a811SRussell Kingconfig HOTPLUG_CPU 141700b7dedeSRussell King bool "Support for hot-pluggable CPUs" 141840b31360SStephen Rothwell depends on SMP 1419a054a811SRussell King help 1420a054a811SRussell King Say Y here to experiment with turning CPUs off and on. CPUs 1421a054a811SRussell King can be controlled through /sys/devices/system/cpu. 1422a054a811SRussell King 14232bdd424fSWill Deaconconfig ARM_PSCI 14242bdd424fSWill Deacon bool "Support for the ARM Power State Coordination Interface (PSCI)" 1425e679660dSJens Wiklander depends on HAVE_ARM_SMCCC 1426be120397SMark Rutland select ARM_PSCI_FW 14272bdd424fSWill Deacon help 14282bdd424fSWill Deacon Say Y here if you want Linux to communicate with system firmware 14292bdd424fSWill Deacon implementing the PSCI specification for CPU-centric power 14302bdd424fSWill Deacon management operations described in ARM document number ARM DEN 14312bdd424fSWill Deacon 0022A ("Power State Coordination Interface System Software on 14322bdd424fSWill Deacon ARM processors"). 14332bdd424fSWill Deacon 14342a6ad871SMaxime Ripard# The GPIO number here must be sorted by descending number. In case of 14352a6ad871SMaxime Ripard# a multiplatform kernel, we just want the highest value required by the 14362a6ad871SMaxime Ripard# selected platforms. 143744986ab0SPeter De Schrijver (NVIDIA)config ARCH_NR_GPIO 143844986ab0SPeter De Schrijver (NVIDIA) int 1439b35d2e56SGregory Fong default 1024 if ARCH_BRCMSTB || ARCH_SHMOBILE || ARCH_TEGRA || \ 1440b35d2e56SGregory Fong ARCH_ZYNQ 1441aa42587aSTomasz Figa default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \ 1442aa42587aSTomasz Figa SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 1443eb171a99SBoris BREZILLON default 416 if ARCH_SUNXI 144406b851e5SOlof Johansson default 392 if ARCH_U8500 144501bb914cSTony Prisk default 352 if ARCH_VT8500 14467b5da4c3SHeiko Stuebner default 288 if ARCH_ROCKCHIP 14472a6ad871SMaxime Ripard default 264 if MACH_H4700 144844986ab0SPeter De Schrijver (NVIDIA) default 0 144944986ab0SPeter De Schrijver (NVIDIA) help 145044986ab0SPeter De Schrijver (NVIDIA) Maximum number of GPIOs in the system. 145144986ab0SPeter De Schrijver (NVIDIA) 145244986ab0SPeter De Schrijver (NVIDIA) If unsure, leave the default value. 145344986ab0SPeter De Schrijver (NVIDIA) 1454d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt 14551da177e4SLinus Torvalds 1456c9218b16SRussell Kingconfig HZ_FIXED 1457f8065813SRussell King int 1458070b8b43SKukjin Kim default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \ 1459a73ddc61SKukjin Kim ARCH_S5PV210 || ARCH_EXYNOS4 14601164f672SAlexandre Belloni default 128 if SOC_AT91RM9200 146147d84682SRussell King default 0 1462c9218b16SRussell King 1463c9218b16SRussell Kingchoice 146447d84682SRussell King depends on HZ_FIXED = 0 1465c9218b16SRussell King prompt "Timer frequency" 1466c9218b16SRussell King 1467c9218b16SRussell Kingconfig HZ_100 1468c9218b16SRussell King bool "100 Hz" 1469c9218b16SRussell King 1470c9218b16SRussell Kingconfig HZ_200 1471c9218b16SRussell King bool "200 Hz" 1472c9218b16SRussell King 1473c9218b16SRussell Kingconfig HZ_250 1474c9218b16SRussell King bool "250 Hz" 1475c9218b16SRussell King 1476c9218b16SRussell Kingconfig HZ_300 1477c9218b16SRussell King bool "300 Hz" 1478c9218b16SRussell King 1479c9218b16SRussell Kingconfig HZ_500 1480c9218b16SRussell King bool "500 Hz" 1481c9218b16SRussell King 1482c9218b16SRussell Kingconfig HZ_1000 1483c9218b16SRussell King bool "1000 Hz" 1484c9218b16SRussell King 1485c9218b16SRussell Kingendchoice 1486c9218b16SRussell King 1487c9218b16SRussell Kingconfig HZ 1488c9218b16SRussell King int 148947d84682SRussell King default HZ_FIXED if HZ_FIXED != 0 1490c9218b16SRussell King default 100 if HZ_100 1491c9218b16SRussell King default 200 if HZ_200 1492c9218b16SRussell King default 250 if HZ_250 1493c9218b16SRussell King default 300 if HZ_300 1494c9218b16SRussell King default 500 if HZ_500 1495c9218b16SRussell King default 1000 1496c9218b16SRussell King 1497c9218b16SRussell Kingconfig SCHED_HRTICK 1498c9218b16SRussell King def_bool HIGH_RES_TIMERS 1499f8065813SRussell King 150016c79651SCatalin Marinasconfig THUMB2_KERNEL 1501bc7dea00SUwe Kleine-König bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY 15024477ca45SUwe Kleine-König depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K 1503bc7dea00SUwe Kleine-König default y if CPU_THUMBONLY 150416c79651SCatalin Marinas select AEABI 150516c79651SCatalin Marinas select ARM_ASM_UNIFIED 150689bace65SArnd Bergmann select ARM_UNWIND 150716c79651SCatalin Marinas help 150816c79651SCatalin Marinas By enabling this option, the kernel will be compiled in 150916c79651SCatalin Marinas Thumb-2 mode. A compiler/assembler that understand the unified 151016c79651SCatalin Marinas ARM-Thumb syntax is needed. 151116c79651SCatalin Marinas 151216c79651SCatalin Marinas If unsure, say N. 151316c79651SCatalin Marinas 15146f685c5cSDave Martinconfig THUMB2_AVOID_R_ARM_THM_JUMP11 15156f685c5cSDave Martin bool "Work around buggy Thumb-2 short branch relocations in gas" 15166f685c5cSDave Martin depends on THUMB2_KERNEL && MODULES 15176f685c5cSDave Martin default y 15186f685c5cSDave Martin help 15196f685c5cSDave Martin Various binutils versions can resolve Thumb-2 branches to 15206f685c5cSDave Martin locally-defined, preemptible global symbols as short-range "b.n" 15216f685c5cSDave Martin branch instructions. 15226f685c5cSDave Martin 15236f685c5cSDave Martin This is a problem, because there's no guarantee the final 15246f685c5cSDave Martin destination of the symbol, or any candidate locations for a 15256f685c5cSDave Martin trampoline, are within range of the branch. For this reason, the 15266f685c5cSDave Martin kernel does not support fixing up the R_ARM_THM_JUMP11 (102) 15276f685c5cSDave Martin relocation in modules at all, and it makes little sense to add 15286f685c5cSDave Martin support. 15296f685c5cSDave Martin 15306f685c5cSDave Martin The symptom is that the kernel fails with an "unsupported 15316f685c5cSDave Martin relocation" error when loading some modules. 15326f685c5cSDave Martin 15336f685c5cSDave Martin Until fixed tools are available, passing 15346f685c5cSDave Martin -fno-optimize-sibling-calls to gcc should prevent gcc generating 15356f685c5cSDave Martin code which hits this problem, at the cost of a bit of extra runtime 15366f685c5cSDave Martin stack usage in some cases. 15376f685c5cSDave Martin 15386f685c5cSDave Martin The problem is described in more detail at: 15396f685c5cSDave Martin https://bugs.launchpad.net/binutils-linaro/+bug/725126 15406f685c5cSDave Martin 15416f685c5cSDave Martin Only Thumb-2 kernels are affected. 15426f685c5cSDave Martin 15436f685c5cSDave Martin Unless you are sure your tools don't have this problem, say Y. 15446f685c5cSDave Martin 15450becb088SCatalin Marinasconfig ARM_ASM_UNIFIED 15460becb088SCatalin Marinas bool 15470becb088SCatalin Marinas 154842f25bddSNicolas Pitreconfig ARM_PATCH_IDIV 154942f25bddSNicolas Pitre bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()" 155042f25bddSNicolas Pitre depends on CPU_32v7 && !XIP_KERNEL 155142f25bddSNicolas Pitre default y 155242f25bddSNicolas Pitre help 155342f25bddSNicolas Pitre The ARM compiler inserts calls to __aeabi_idiv() and 155442f25bddSNicolas Pitre __aeabi_uidiv() when it needs to perform division on signed 155542f25bddSNicolas Pitre and unsigned integers. Some v7 CPUs have support for the sdiv 155642f25bddSNicolas Pitre and udiv instructions that can be used to implement those 155742f25bddSNicolas Pitre functions. 155842f25bddSNicolas Pitre 155942f25bddSNicolas Pitre Enabling this option allows the kernel to modify itself to 156042f25bddSNicolas Pitre replace the first two instructions of these library functions 156142f25bddSNicolas Pitre with the sdiv or udiv plus "bx lr" instructions when the CPU 156242f25bddSNicolas Pitre it is running on supports them. Typically this will be faster 156342f25bddSNicolas Pitre and less power intensive than running the original library 156442f25bddSNicolas Pitre code to do integer division. 156542f25bddSNicolas Pitre 1566704bdda0SNicolas Pitreconfig AEABI 1567704bdda0SNicolas Pitre bool "Use the ARM EABI to compile the kernel" 1568704bdda0SNicolas Pitre help 1569704bdda0SNicolas Pitre This option allows for the kernel to be compiled using the latest 1570704bdda0SNicolas Pitre ARM ABI (aka EABI). This is only useful if you are using a user 1571704bdda0SNicolas Pitre space environment that is also compiled with EABI. 1572704bdda0SNicolas Pitre 1573704bdda0SNicolas Pitre Since there are major incompatibilities between the legacy ABI and 1574704bdda0SNicolas Pitre EABI, especially with regard to structure member alignment, this 1575704bdda0SNicolas Pitre option also changes the kernel syscall calling convention to 1576704bdda0SNicolas Pitre disambiguate both ABIs and allow for backward compatibility support 1577704bdda0SNicolas Pitre (selected with CONFIG_OABI_COMPAT). 1578704bdda0SNicolas Pitre 1579704bdda0SNicolas Pitre To use this you need GCC version 4.0.0 or later. 1580704bdda0SNicolas Pitre 15816c90c872SNicolas Pitreconfig OABI_COMPAT 1582a73a3ff1SRussell King bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" 1583d6f94fa0SKees Cook depends on AEABI && !THUMB2_KERNEL 15846c90c872SNicolas Pitre help 15856c90c872SNicolas Pitre This option preserves the old syscall interface along with the 15866c90c872SNicolas Pitre new (ARM EABI) one. It also provides a compatibility layer to 15876c90c872SNicolas Pitre intercept syscalls that have structure arguments which layout 15886c90c872SNicolas Pitre in memory differs between the legacy ABI and the new ARM EABI 15896c90c872SNicolas Pitre (only for non "thumb" binaries). This option adds a tiny 15906c90c872SNicolas Pitre overhead to all syscalls and produces a slightly larger kernel. 159191702175SKees Cook 159291702175SKees Cook The seccomp filter system will not be available when this is 159391702175SKees Cook selected, since there is no way yet to sensibly distinguish 159491702175SKees Cook between calling conventions during filtering. 159591702175SKees Cook 15966c90c872SNicolas Pitre If you know you'll be using only pure EABI user space then you 15976c90c872SNicolas Pitre can say N here. If this option is not selected and you attempt 15986c90c872SNicolas Pitre to execute a legacy ABI binary then the result will be 15996c90c872SNicolas Pitre UNPREDICTABLE (in fact it can be predicted that it won't work 1600b02f8467SKees Cook at all). If in doubt say N. 16016c90c872SNicolas Pitre 1602eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL 1603e80d6a24SMel Gorman bool 1604e80d6a24SMel Gorman 160505944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE 160605944d74SRussell King bool 160705944d74SRussell King 160807a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT 160907a2f737SRussell King def_bool ARCH_SPARSEMEM_ENABLE 161007a2f737SRussell King 161105944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL 1612be370302SRussell King def_bool ARCH_SPARSEMEM_ENABLE 1613c80d79d7SYasunori Goto 16147b7bf499SWill Deaconconfig HAVE_ARCH_PFN_VALID 16157b7bf499SWill Deacon def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM 16167b7bf499SWill Deacon 1617b8cd51afSSteve Capperconfig HAVE_GENERIC_RCU_GUP 1618b8cd51afSSteve Capper def_bool y 1619b8cd51afSSteve Capper depends on ARM_LPAE 1620b8cd51afSSteve Capper 1621053a96caSNicolas Pitreconfig HIGHMEM 1622e8db89a2SRussell King bool "High Memory Support" 1623e8db89a2SRussell King depends on MMU 1624053a96caSNicolas Pitre help 1625053a96caSNicolas Pitre The address space of ARM processors is only 4 Gigabytes large 1626053a96caSNicolas Pitre and it has to accommodate user address space, kernel address 1627053a96caSNicolas Pitre space as well as some memory mapped IO. That means that, if you 1628053a96caSNicolas Pitre have a large amount of physical memory and/or IO, not all of the 1629053a96caSNicolas Pitre memory can be "permanently mapped" by the kernel. The physical 1630053a96caSNicolas Pitre memory that is not permanently mapped is called "high memory". 1631053a96caSNicolas Pitre 1632053a96caSNicolas Pitre Depending on the selected kernel/user memory split, minimum 1633053a96caSNicolas Pitre vmalloc space and actual amount of RAM, you may not need this 1634053a96caSNicolas Pitre option which should result in a slightly faster kernel. 1635053a96caSNicolas Pitre 1636053a96caSNicolas Pitre If unsure, say n. 1637053a96caSNicolas Pitre 163865cec8e3SRussell Kingconfig HIGHPTE 16399a431bd5SRussell King bool "Allocate 2nd-level pagetables from highmem" if EXPERT 164065cec8e3SRussell King depends on HIGHMEM 16419a431bd5SRussell King default y 1642b4d103d1SRussell King help 1643b4d103d1SRussell King The VM uses one page of physical memory for each page table. 1644b4d103d1SRussell King For systems with a lot of processes, this can use a lot of 1645b4d103d1SRussell King precious low memory, eventually leading to low memory being 1646b4d103d1SRussell King consumed by page tables. Setting this option will allow 1647b4d103d1SRussell King user-space 2nd level page tables to reside in high memory. 164865cec8e3SRussell King 1649a5e090acSRussell Kingconfig CPU_SW_DOMAIN_PAN 1650a5e090acSRussell King bool "Enable use of CPU domains to implement privileged no-access" 1651a5e090acSRussell King depends on MMU && !ARM_LPAE 16521b8873a0SJamie Iles default y 16531b8873a0SJamie Iles help 1654a5e090acSRussell King Increase kernel security by ensuring that normal kernel accesses 1655a5e090acSRussell King are unable to access userspace addresses. This can help prevent 1656a5e090acSRussell King use-after-free bugs becoming an exploitable privilege escalation 1657a5e090acSRussell King by ensuring that magic values (such as LIST_POISON) will always 1658a5e090acSRussell King fault when dereferenced. 1659a5e090acSRussell King 1660a5e090acSRussell King CPUs with low-vector mappings use a best-efforts implementation. 1661a5e090acSRussell King Their lower 1MB needs to remain accessible for the vectors, but 1662a5e090acSRussell King the remainder of userspace will become appropriately inaccessible. 16631da177e4SLinus Torvalds 16641da177e4SLinus Torvaldsconfig HW_PERF_EVENTS 1665fa8ad788SMark Rutland def_bool y 1666fa8ad788SMark Rutland depends on ARM_PMU 16671b8873a0SJamie Iles 16681355e2a6SCatalin Marinasconfig SYS_SUPPORTS_HUGETLBFS 16691355e2a6SCatalin Marinas def_bool y 16701355e2a6SCatalin Marinas depends on ARM_LPAE 16711355e2a6SCatalin Marinas 16728d962507SCatalin Marinasconfig HAVE_ARCH_TRANSPARENT_HUGEPAGE 16738d962507SCatalin Marinas def_bool y 16748d962507SCatalin Marinas depends on ARM_LPAE 16758d962507SCatalin Marinas 16764bfab203SSteven Capperconfig ARCH_WANT_GENERAL_HUGETLB 16774bfab203SSteven Capper def_bool y 16784bfab203SSteven Capper 16797d485f64SArd Biesheuvelconfig ARM_MODULE_PLTS 16807d485f64SArd Biesheuvel bool "Use PLTs to allow module memory to spill over into vmalloc area" 16817d485f64SArd Biesheuvel depends on MODULES 16827d485f64SArd Biesheuvel help 16837d485f64SArd Biesheuvel Allocate PLTs when loading modules so that jumps and calls whose 16847d485f64SArd Biesheuvel targets are too far away for their relative offsets to be encoded 16857d485f64SArd Biesheuvel in the instructions themselves can be bounced via veneers in the 16867d485f64SArd Biesheuvel module's PLT. This allows modules to be allocated in the generic 16877d485f64SArd Biesheuvel vmalloc area after the dedicated module memory area has been 16887d485f64SArd Biesheuvel exhausted. The modules will use slightly more memory, but after 16897d485f64SArd Biesheuvel rounding up to page size, the actual memory footprint is usually 16907d485f64SArd Biesheuvel the same. 16917d485f64SArd Biesheuvel 16927d485f64SArd Biesheuvel Say y if you are getting out of memory errors while loading modules 16937d485f64SArd Biesheuvel 16941da177e4SLinus Torvaldssource "mm/Kconfig" 16951da177e4SLinus Torvalds 1696c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER 169736d6c928SUlrich Hecht int "Maximum zone order" 1698898f08e1SYegor Yefremov default "12" if SOC_AM33XX 16996d85e2b0SUwe Kleine-König default "9" if SA1111 || ARCH_EFM32 1700c1b2d970SMagnus Damm default "11" 1701c1b2d970SMagnus Damm help 1702c1b2d970SMagnus Damm The kernel memory allocator divides physically contiguous memory 1703c1b2d970SMagnus Damm blocks into "zones", where each zone is a power of two number of 1704c1b2d970SMagnus Damm pages. This option selects the largest power of two that the kernel 1705c1b2d970SMagnus Damm keeps in the memory allocator. If you need to allocate very large 1706c1b2d970SMagnus Damm blocks of physically contiguous memory, then you may need to 1707c1b2d970SMagnus Damm increase this value. 1708c1b2d970SMagnus Damm 1709c1b2d970SMagnus Damm This config option is actually maximum order plus one. For example, 1710c1b2d970SMagnus Damm a value of 11 means that the largest free memory block is 2^10 pages. 1711c1b2d970SMagnus Damm 17121da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP 17131da177e4SLinus Torvalds bool 1714f12d0d7cSHyok S. Choi depends on CPU_CP15_MMU 17151da177e4SLinus Torvalds default y if !ARCH_EBSA110 1716e119bfffSRussell King select HAVE_PROC_CPU if PROC_FS 17171da177e4SLinus Torvalds help 17181da177e4SLinus Torvalds ARM processors cannot fetch/store information which is not 17191da177e4SLinus Torvalds naturally aligned on the bus, i.e., a 4 byte fetch must start at an 17201da177e4SLinus Torvalds address divisible by 4. On 32-bit ARM processors, these non-aligned 17211da177e4SLinus Torvalds fetch/store instructions will be emulated in software if you say 17221da177e4SLinus Torvalds here, which has a severe performance impact. This is necessary for 17231da177e4SLinus Torvalds correct operation of some network protocols. With an IP-only 17241da177e4SLinus Torvalds configuration it is safe to say N, otherwise say Y. 17251da177e4SLinus Torvalds 172639ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY 172738ef2ad5SLinus Walleij bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()" 172838ef2ad5SLinus Walleij depends on MMU 172939ec58f3SLennert Buytenhek default y if CPU_FEROCEON 173039ec58f3SLennert Buytenhek help 173139ec58f3SLennert Buytenhek Implement faster copy_to_user and clear_user methods for CPU 173239ec58f3SLennert Buytenhek cores where a 8-word STM instruction give significantly higher 173339ec58f3SLennert Buytenhek memory write throughput than a sequence of individual 32bit stores. 173439ec58f3SLennert Buytenhek 173539ec58f3SLennert Buytenhek A possible side effect is a slight increase in scheduling latency 173639ec58f3SLennert Buytenhek between threads sharing the same address space if they invoke 173739ec58f3SLennert Buytenhek such copy operations with large buffers. 173839ec58f3SLennert Buytenhek 173939ec58f3SLennert Buytenhek However, if the CPU data cache is using a write-allocate mode, 174039ec58f3SLennert Buytenhek this option is unlikely to provide any performance gain. 174139ec58f3SLennert Buytenhek 174270c70d97SNicolas Pitreconfig SECCOMP 174370c70d97SNicolas Pitre bool 174470c70d97SNicolas Pitre prompt "Enable seccomp to safely compute untrusted bytecode" 174570c70d97SNicolas Pitre ---help--- 174670c70d97SNicolas Pitre This kernel feature is useful for number crunching applications 174770c70d97SNicolas Pitre that may need to compute untrusted bytecode during their 174870c70d97SNicolas Pitre execution. By using pipes or other transports made available to 174970c70d97SNicolas Pitre the process as file descriptors supporting the read/write 175070c70d97SNicolas Pitre syscalls, it's possible to isolate those applications in 175170c70d97SNicolas Pitre their own address space using seccomp. Once seccomp is 175270c70d97SNicolas Pitre enabled via prctl(PR_SET_SECCOMP), it cannot be disabled 175370c70d97SNicolas Pitre and the task is only allowed to execute a few safe syscalls 175470c70d97SNicolas Pitre defined by each seccomp mode. 175570c70d97SNicolas Pitre 175606e6295bSStefano Stabelliniconfig SWIOTLB 175706e6295bSStefano Stabellini def_bool y 175806e6295bSStefano Stabellini 175906e6295bSStefano Stabelliniconfig IOMMU_HELPER 176006e6295bSStefano Stabellini def_bool SWIOTLB 176106e6295bSStefano Stabellini 176202c2433bSStefano Stabelliniconfig PARAVIRT 176302c2433bSStefano Stabellini bool "Enable paravirtualization code" 176402c2433bSStefano Stabellini help 176502c2433bSStefano Stabellini This changes the kernel so it can modify itself when it is run 176602c2433bSStefano Stabellini under a hypervisor, potentially improving performance significantly 176702c2433bSStefano Stabellini over full virtualization. 176802c2433bSStefano Stabellini 176902c2433bSStefano Stabelliniconfig PARAVIRT_TIME_ACCOUNTING 177002c2433bSStefano Stabellini bool "Paravirtual steal time accounting" 177102c2433bSStefano Stabellini select PARAVIRT 177202c2433bSStefano Stabellini default n 177302c2433bSStefano Stabellini help 177402c2433bSStefano Stabellini Select this option to enable fine granularity task steal time 177502c2433bSStefano Stabellini accounting. Time spent executing other tasks in parallel with 177602c2433bSStefano Stabellini the current vCPU is discounted from the vCPU power. To account for 177702c2433bSStefano Stabellini that, there can be a small performance impact. 177802c2433bSStefano Stabellini 177902c2433bSStefano Stabellini If in doubt, say N here. 178002c2433bSStefano Stabellini 1781eff8d644SStefano Stabelliniconfig XEN_DOM0 1782eff8d644SStefano Stabellini def_bool y 1783eff8d644SStefano Stabellini depends on XEN 1784eff8d644SStefano Stabellini 1785eff8d644SStefano Stabelliniconfig XEN 1786c2ba1f7dSJulien Grall bool "Xen guest support on ARM" 178785323a99SIan Campbell depends on ARM && AEABI && OF 1788f880b67dSArnd Bergmann depends on CPU_V7 && !CPU_V6 178985323a99SIan Campbell depends on !GENERIC_ATOMIC64 17907693deccSUwe Kleine-König depends on MMU 179151aaf81fSRussell King select ARCH_DMA_ADDR_T_64BIT 179217b7ab80SStefano Stabellini select ARM_PSCI 179383862ccfSStefano Stabellini select SWIOTLB_XEN 179402c2433bSStefano Stabellini select PARAVIRT 1795eff8d644SStefano Stabellini help 1796eff8d644SStefano Stabellini Say Y if you want to run Linux in a Virtual Machine on Xen on ARM. 1797eff8d644SStefano Stabellini 17981da177e4SLinus Torvaldsendmenu 17991da177e4SLinus Torvalds 18001da177e4SLinus Torvaldsmenu "Boot options" 18011da177e4SLinus Torvalds 18029eb8f674SGrant Likelyconfig USE_OF 18039eb8f674SGrant Likely bool "Flattened Device Tree support" 1804b1b3f49cSRussell King select IRQ_DOMAIN 18059eb8f674SGrant Likely select OF 18069eb8f674SGrant Likely help 18079eb8f674SGrant Likely Include support for flattened device tree machine descriptions. 18089eb8f674SGrant Likely 1809bd51e2f5SNicolas Pitreconfig ATAGS 1810bd51e2f5SNicolas Pitre bool "Support for the traditional ATAGS boot data passing" if USE_OF 1811bd51e2f5SNicolas Pitre default y 1812bd51e2f5SNicolas Pitre help 1813bd51e2f5SNicolas Pitre This is the traditional way of passing data to the kernel at boot 1814bd51e2f5SNicolas Pitre time. If you are solely relying on the flattened device tree (or 1815bd51e2f5SNicolas Pitre the ARM_ATAG_DTB_COMPAT option) then you may unselect this option 1816bd51e2f5SNicolas Pitre to remove ATAGS support from your kernel binary. If unsure, 1817bd51e2f5SNicolas Pitre leave this to y. 1818bd51e2f5SNicolas Pitre 1819bd51e2f5SNicolas Pitreconfig DEPRECATED_PARAM_STRUCT 1820bd51e2f5SNicolas Pitre bool "Provide old way to pass kernel parameters" 1821bd51e2f5SNicolas Pitre depends on ATAGS 1822bd51e2f5SNicolas Pitre help 1823bd51e2f5SNicolas Pitre This was deprecated in 2001 and announced to live on for 5 years. 1824bd51e2f5SNicolas Pitre Some old boot loaders still use this way. 1825bd51e2f5SNicolas Pitre 18261da177e4SLinus Torvalds# Compressed boot loader in ROM. Yes, we really want to ask about 18271da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files. 18281da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT 18291da177e4SLinus Torvalds hex "Compressed ROM boot loader base address" 18301da177e4SLinus Torvalds default "0" 18311da177e4SLinus Torvalds help 18321da177e4SLinus Torvalds The physical address at which the ROM-able zImage is to be 18331da177e4SLinus Torvalds placed in the target. Platforms which normally make use of 18341da177e4SLinus Torvalds ROM-able zImage formats normally set this to a suitable 18351da177e4SLinus Torvalds value in their defconfig file. 18361da177e4SLinus Torvalds 18371da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 18381da177e4SLinus Torvalds 18391da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS 18401da177e4SLinus Torvalds hex "Compressed ROM boot loader BSS address" 18411da177e4SLinus Torvalds default "0" 18421da177e4SLinus Torvalds help 1843f8c440b2SDan Fandrich The base address of an area of read/write memory in the target 1844f8c440b2SDan Fandrich for the ROM-able zImage which must be available while the 1845f8c440b2SDan Fandrich decompressor is running. It must be large enough to hold the 1846f8c440b2SDan Fandrich entire decompressed kernel plus an additional 128 KiB. 1847f8c440b2SDan Fandrich Platforms which normally make use of ROM-able zImage formats 1848f8c440b2SDan Fandrich normally set this to a suitable value in their defconfig file. 18491da177e4SLinus Torvalds 18501da177e4SLinus Torvalds If ZBOOT_ROM is not enabled, this has no effect. 18511da177e4SLinus Torvalds 18521da177e4SLinus Torvaldsconfig ZBOOT_ROM 18531da177e4SLinus Torvalds bool "Compressed boot loader in ROM/flash" 18541da177e4SLinus Torvalds depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS 185510968131SRussell King depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR 18561da177e4SLinus Torvalds help 18571da177e4SLinus Torvalds Say Y here if you intend to execute your compressed kernel image 18581da177e4SLinus Torvalds (zImage) directly from ROM or flash. If unsure, say N. 18591da177e4SLinus Torvalds 1860e2a6a3aaSJohn Bonesioconfig ARM_APPENDED_DTB 1861e2a6a3aaSJohn Bonesio bool "Use appended device tree blob to zImage (EXPERIMENTAL)" 186210968131SRussell King depends on OF 1863e2a6a3aaSJohn Bonesio help 1864e2a6a3aaSJohn Bonesio With this option, the boot code will look for a device tree binary 1865e2a6a3aaSJohn Bonesio (DTB) appended to zImage 1866e2a6a3aaSJohn Bonesio (e.g. cat zImage <filename>.dtb > zImage_w_dtb). 1867e2a6a3aaSJohn Bonesio 1868e2a6a3aaSJohn Bonesio This is meant as a backward compatibility convenience for those 1869e2a6a3aaSJohn Bonesio systems with a bootloader that can't be upgraded to accommodate 1870e2a6a3aaSJohn Bonesio the documented boot protocol using a device tree. 1871e2a6a3aaSJohn Bonesio 1872e2a6a3aaSJohn Bonesio Beware that there is very little in terms of protection against 1873e2a6a3aaSJohn Bonesio this option being confused by leftover garbage in memory that might 1874e2a6a3aaSJohn Bonesio look like a DTB header after a reboot if no actual DTB is appended 1875e2a6a3aaSJohn Bonesio to zImage. Do not leave this option active in a production kernel 1876e2a6a3aaSJohn Bonesio if you don't intend to always append a DTB. Proper passing of the 1877e2a6a3aaSJohn Bonesio location into r2 of a bootloader provided DTB is always preferable 1878e2a6a3aaSJohn Bonesio to this option. 1879e2a6a3aaSJohn Bonesio 1880b90b9a38SNicolas Pitreconfig ARM_ATAG_DTB_COMPAT 1881b90b9a38SNicolas Pitre bool "Supplement the appended DTB with traditional ATAG information" 1882b90b9a38SNicolas Pitre depends on ARM_APPENDED_DTB 1883b90b9a38SNicolas Pitre help 1884b90b9a38SNicolas Pitre Some old bootloaders can't be updated to a DTB capable one, yet 1885b90b9a38SNicolas Pitre they provide ATAGs with memory configuration, the ramdisk address, 1886b90b9a38SNicolas Pitre the kernel cmdline string, etc. Such information is dynamically 1887b90b9a38SNicolas Pitre provided by the bootloader and can't always be stored in a static 1888b90b9a38SNicolas Pitre DTB. To allow a device tree enabled kernel to be used with such 1889b90b9a38SNicolas Pitre bootloaders, this option allows zImage to extract the information 1890b90b9a38SNicolas Pitre from the ATAG list and store it at run time into the appended DTB. 1891b90b9a38SNicolas Pitre 1892d0f34a11SGenoud Richardchoice 1893d0f34a11SGenoud Richard prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT 1894d0f34a11SGenoud Richard default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER 1895d0f34a11SGenoud Richard 1896d0f34a11SGenoud Richardconfig ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER 1897d0f34a11SGenoud Richard bool "Use bootloader kernel arguments if available" 1898d0f34a11SGenoud Richard help 1899d0f34a11SGenoud Richard Uses the command-line options passed by the boot loader instead of 1900d0f34a11SGenoud Richard the device tree bootargs property. If the boot loader doesn't provide 1901d0f34a11SGenoud Richard any, the device tree bootargs property will be used. 1902d0f34a11SGenoud Richard 1903d0f34a11SGenoud Richardconfig ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND 1904d0f34a11SGenoud Richard bool "Extend with bootloader kernel arguments" 1905d0f34a11SGenoud Richard help 1906d0f34a11SGenoud Richard The command-line arguments provided by the boot loader will be 1907d0f34a11SGenoud Richard appended to the the device tree bootargs property. 1908d0f34a11SGenoud Richard 1909d0f34a11SGenoud Richardendchoice 1910d0f34a11SGenoud Richard 19111da177e4SLinus Torvaldsconfig CMDLINE 19121da177e4SLinus Torvalds string "Default kernel command string" 19131da177e4SLinus Torvalds default "" 19141da177e4SLinus Torvalds help 19151da177e4SLinus Torvalds On some architectures (EBSA110 and CATS), there is currently no way 19161da177e4SLinus Torvalds for the boot loader to pass arguments to the kernel. For these 19171da177e4SLinus Torvalds architectures, you should supply some command-line options at build 19181da177e4SLinus Torvalds time by entering them here. As a minimum, you should specify the 19191da177e4SLinus Torvalds memory size and the root device (e.g., mem=64M root=/dev/nfs). 19201da177e4SLinus Torvalds 19214394c124SVictor Boiviechoice 19224394c124SVictor Boivie prompt "Kernel command line type" if CMDLINE != "" 19234394c124SVictor Boivie default CMDLINE_FROM_BOOTLOADER 1924bd51e2f5SNicolas Pitre depends on ATAGS 19254394c124SVictor Boivie 19264394c124SVictor Boivieconfig CMDLINE_FROM_BOOTLOADER 19274394c124SVictor Boivie bool "Use bootloader kernel arguments if available" 19284394c124SVictor Boivie help 19294394c124SVictor Boivie Uses the command-line options passed by the boot loader. If 19304394c124SVictor Boivie the boot loader doesn't provide any, the default kernel command 19314394c124SVictor Boivie string provided in CMDLINE will be used. 19324394c124SVictor Boivie 19334394c124SVictor Boivieconfig CMDLINE_EXTEND 19344394c124SVictor Boivie bool "Extend bootloader kernel arguments" 19354394c124SVictor Boivie help 19364394c124SVictor Boivie The command-line arguments provided by the boot loader will be 19374394c124SVictor Boivie appended to the default kernel command string. 19384394c124SVictor Boivie 193992d2040dSAlexander Hollerconfig CMDLINE_FORCE 194092d2040dSAlexander Holler bool "Always use the default kernel command string" 194192d2040dSAlexander Holler help 194292d2040dSAlexander Holler Always use the default kernel command string, even if the boot 194392d2040dSAlexander Holler loader passes other arguments to the kernel. 194492d2040dSAlexander Holler This is useful if you cannot or don't want to change the 194592d2040dSAlexander Holler command-line options your boot loader passes to the kernel. 19464394c124SVictor Boivieendchoice 194792d2040dSAlexander Holler 19481da177e4SLinus Torvaldsconfig XIP_KERNEL 19491da177e4SLinus Torvalds bool "Kernel Execute-In-Place from ROM" 195010968131SRussell King depends on !ARM_LPAE && !ARCH_MULTIPLATFORM 19511da177e4SLinus Torvalds help 19521da177e4SLinus Torvalds Execute-In-Place allows the kernel to run from non-volatile storage 19531da177e4SLinus Torvalds directly addressable by the CPU, such as NOR flash. This saves RAM 19541da177e4SLinus Torvalds space since the text section of the kernel is not loaded from flash 19551da177e4SLinus Torvalds to RAM. Read-write sections, such as the data section and stack, 19561da177e4SLinus Torvalds are still copied to RAM. The XIP kernel is not compressed since 19571da177e4SLinus Torvalds it has to run directly from flash, so it will take more space to 19581da177e4SLinus Torvalds store it. The flash address used to link the kernel object files, 19591da177e4SLinus Torvalds and for storing it, is configuration dependent. Therefore, if you 19601da177e4SLinus Torvalds say Y here, you must know the proper physical address where to 19611da177e4SLinus Torvalds store the kernel image depending on your own flash memory usage. 19621da177e4SLinus Torvalds 19631da177e4SLinus Torvalds Also note that the make target becomes "make xipImage" rather than 19641da177e4SLinus Torvalds "make zImage" or "make Image". The final kernel binary to put in 19651da177e4SLinus Torvalds ROM memory will be arch/arm/boot/xipImage. 19661da177e4SLinus Torvalds 19671da177e4SLinus Torvalds If unsure, say N. 19681da177e4SLinus Torvalds 19691da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR 19701da177e4SLinus Torvalds hex "XIP Kernel Physical Location" 19711da177e4SLinus Torvalds depends on XIP_KERNEL 19721da177e4SLinus Torvalds default "0x00080000" 19731da177e4SLinus Torvalds help 19741da177e4SLinus Torvalds This is the physical address in your flash memory the kernel will 19751da177e4SLinus Torvalds be linked for and stored to. This address is dependent on your 19761da177e4SLinus Torvalds own flash usage. 19771da177e4SLinus Torvalds 1978c587e4a6SRichard Purdieconfig KEXEC 1979c587e4a6SRichard Purdie bool "Kexec system call (EXPERIMENTAL)" 198019ab428fSStephen Warren depends on (!SMP || PM_SLEEP_SMP) 1981cb1293e2SArnd Bergmann depends on !CPU_V7M 19822965faa5SDave Young select KEXEC_CORE 1983c587e4a6SRichard Purdie help 1984c587e4a6SRichard Purdie kexec is a system call that implements the ability to shutdown your 1985c587e4a6SRichard Purdie current kernel, and to start another kernel. It is like a reboot 198601dd2fbfSMatt LaPlante but it is independent of the system firmware. And like a reboot 1987c587e4a6SRichard Purdie you can start any kernel with it, not just Linux. 1988c587e4a6SRichard Purdie 1989c587e4a6SRichard Purdie It is an ongoing process to be certain the hardware in a machine 1990c587e4a6SRichard Purdie is properly shutdown, so do not be surprised if this code does not 1991bf220695SGeert Uytterhoeven initially work for you. 1992c587e4a6SRichard Purdie 19934cd9d6f7SRichard Purdieconfig ATAGS_PROC 19944cd9d6f7SRichard Purdie bool "Export atags in procfs" 1995bd51e2f5SNicolas Pitre depends on ATAGS && KEXEC 1996b98d7291SUli Luckas default y 19974cd9d6f7SRichard Purdie help 19984cd9d6f7SRichard Purdie Should the atags used to boot the kernel be exported in an "atags" 19994cd9d6f7SRichard Purdie file in procfs. Useful with kexec. 20004cd9d6f7SRichard Purdie 2001cb5d39b3SMika Westerbergconfig CRASH_DUMP 2002cb5d39b3SMika Westerberg bool "Build kdump crash kernel (EXPERIMENTAL)" 2003cb5d39b3SMika Westerberg help 2004cb5d39b3SMika Westerberg Generate crash dump after being started by kexec. This should 2005cb5d39b3SMika Westerberg be normally only set in special crash dump kernels which are 2006cb5d39b3SMika Westerberg loaded in the main kernel with kexec-tools into a specially 2007cb5d39b3SMika Westerberg reserved region and then later executed after a crash by 2008cb5d39b3SMika Westerberg kdump/kexec. The crash dump kernel must be compiled to a 2009cb5d39b3SMika Westerberg memory address not used by the main kernel 2010cb5d39b3SMika Westerberg 2011cb5d39b3SMika Westerberg For more details see Documentation/kdump/kdump.txt 2012cb5d39b3SMika Westerberg 2013e69edc79SEric Miaoconfig AUTO_ZRELADDR 2014e69edc79SEric Miao bool "Auto calculation of the decompressed kernel image address" 2015e69edc79SEric Miao help 2016e69edc79SEric Miao ZRELADDR is the physical address where the decompressed kernel 2017e69edc79SEric Miao image will be placed. If AUTO_ZRELADDR is selected, the address 2018e69edc79SEric Miao will be determined at run-time by masking the current IP with 2019e69edc79SEric Miao 0xf8000000. This assumes the zImage being placed in the first 128MB 2020e69edc79SEric Miao from start of memory. 2021e69edc79SEric Miao 202281a0bc39SRoy Franzconfig EFI_STUB 202381a0bc39SRoy Franz bool 202481a0bc39SRoy Franz 202581a0bc39SRoy Franzconfig EFI 202681a0bc39SRoy Franz bool "UEFI runtime support" 202781a0bc39SRoy Franz depends on OF && !CPU_BIG_ENDIAN && MMU && AUTO_ZRELADDR && !XIP_KERNEL 202881a0bc39SRoy Franz select UCS2_STRING 202981a0bc39SRoy Franz select EFI_PARAMS_FROM_FDT 203081a0bc39SRoy Franz select EFI_STUB 203181a0bc39SRoy Franz select EFI_ARMSTUB 203281a0bc39SRoy Franz select EFI_RUNTIME_WRAPPERS 203381a0bc39SRoy Franz ---help--- 203481a0bc39SRoy Franz This option provides support for runtime services provided 203581a0bc39SRoy Franz by UEFI firmware (such as non-volatile variables, realtime 203681a0bc39SRoy Franz clock, and platform reset). A UEFI stub is also provided to 203781a0bc39SRoy Franz allow the kernel to be booted as an EFI application. This 203881a0bc39SRoy Franz is only useful for kernels that may run on systems that have 203981a0bc39SRoy Franz UEFI firmware. 204081a0bc39SRoy Franz 20411da177e4SLinus Torvaldsendmenu 20421da177e4SLinus Torvalds 2043ac9d7efcSRussell Kingmenu "CPU Power Management" 20441da177e4SLinus Torvalds 20451da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig" 20461da177e4SLinus Torvalds 2047ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig" 2048ac9d7efcSRussell King 2049ac9d7efcSRussell Kingendmenu 2050ac9d7efcSRussell King 20511da177e4SLinus Torvaldsmenu "Floating point emulation" 20521da177e4SLinus Torvalds 20531da177e4SLinus Torvaldscomment "At least one emulation must be selected" 20541da177e4SLinus Torvalds 20551da177e4SLinus Torvaldsconfig FPE_NWFPE 20561da177e4SLinus Torvalds bool "NWFPE math emulation" 2057593c252aSDave Martin depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL 20581da177e4SLinus Torvalds ---help--- 20591da177e4SLinus Torvalds Say Y to include the NWFPE floating point emulator in the kernel. 20601da177e4SLinus Torvalds This is necessary to run most binaries. Linux does not currently 20611da177e4SLinus Torvalds support floating point hardware so you need to say Y here even if 20621da177e4SLinus Torvalds your machine has an FPA or floating point co-processor podule. 20631da177e4SLinus Torvalds 20641da177e4SLinus Torvalds You may say N here if you are going to load the Acorn FPEmulator 20651da177e4SLinus Torvalds early in the bootup. 20661da177e4SLinus Torvalds 20671da177e4SLinus Torvaldsconfig FPE_NWFPE_XP 20681da177e4SLinus Torvalds bool "Support extended precision" 2069bedf142bSLennert Buytenhek depends on FPE_NWFPE 20701da177e4SLinus Torvalds help 20711da177e4SLinus Torvalds Say Y to include 80-bit support in the kernel floating-point 20721da177e4SLinus Torvalds emulator. Otherwise, only 32 and 64-bit support is compiled in. 20731da177e4SLinus Torvalds Note that gcc does not generate 80-bit operations by default, 20741da177e4SLinus Torvalds so in most cases this option only enlarges the size of the 20751da177e4SLinus Torvalds floating point emulator without any good reason. 20761da177e4SLinus Torvalds 20771da177e4SLinus Torvalds You almost surely want to say N here. 20781da177e4SLinus Torvalds 20791da177e4SLinus Torvaldsconfig FPE_FASTFPE 20801da177e4SLinus Torvalds bool "FastFPE math emulation (EXPERIMENTAL)" 2081d6f94fa0SKees Cook depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 20821da177e4SLinus Torvalds ---help--- 20831da177e4SLinus Torvalds Say Y here to include the FAST floating point emulator in the kernel. 20841da177e4SLinus Torvalds This is an experimental much faster emulator which now also has full 20851da177e4SLinus Torvalds precision for the mantissa. It does not support any exceptions. 20861da177e4SLinus Torvalds It is very simple, and approximately 3-6 times faster than NWFPE. 20871da177e4SLinus Torvalds 20881da177e4SLinus Torvalds It should be sufficient for most programs. It may be not suitable 20891da177e4SLinus Torvalds for scientific calculations, but you have to check this for yourself. 20901da177e4SLinus Torvalds If you do not feel you need a faster FP emulation you should better 20911da177e4SLinus Torvalds choose NWFPE. 20921da177e4SLinus Torvalds 20931da177e4SLinus Torvaldsconfig VFP 20941da177e4SLinus Torvalds bool "VFP-format floating point maths" 2095e399b1a4SRussell King depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON 20961da177e4SLinus Torvalds help 20971da177e4SLinus Torvalds Say Y to include VFP support code in the kernel. This is needed 20981da177e4SLinus Torvalds if your hardware includes a VFP unit. 20991da177e4SLinus Torvalds 21001da177e4SLinus Torvalds Please see <file:Documentation/arm/VFP/release-notes.txt> for 21011da177e4SLinus Torvalds release notes and additional status information. 21021da177e4SLinus Torvalds 21031da177e4SLinus Torvalds Say N if your target does not have VFP hardware. 21041da177e4SLinus Torvalds 210525ebee02SCatalin Marinasconfig VFPv3 210625ebee02SCatalin Marinas bool 210725ebee02SCatalin Marinas depends on VFP 210825ebee02SCatalin Marinas default y if CPU_V7 210925ebee02SCatalin Marinas 2110b5872db4SCatalin Marinasconfig NEON 2111b5872db4SCatalin Marinas bool "Advanced SIMD (NEON) Extension support" 2112b5872db4SCatalin Marinas depends on VFPv3 && CPU_V7 2113b5872db4SCatalin Marinas help 2114b5872db4SCatalin Marinas Say Y to include support code for NEON, the ARMv7 Advanced SIMD 2115b5872db4SCatalin Marinas Extension. 2116b5872db4SCatalin Marinas 211773c132c1SArd Biesheuvelconfig KERNEL_MODE_NEON 211873c132c1SArd Biesheuvel bool "Support for NEON in kernel mode" 2119c4a30c3bSRussell King depends on NEON && AEABI 212073c132c1SArd Biesheuvel help 212173c132c1SArd Biesheuvel Say Y to include support for NEON in kernel mode. 212273c132c1SArd Biesheuvel 21231da177e4SLinus Torvaldsendmenu 21241da177e4SLinus Torvalds 21251da177e4SLinus Torvaldsmenu "Userspace binary formats" 21261da177e4SLinus Torvalds 21271da177e4SLinus Torvaldssource "fs/Kconfig.binfmt" 21281da177e4SLinus Torvalds 21291da177e4SLinus Torvaldsendmenu 21301da177e4SLinus Torvalds 21311da177e4SLinus Torvaldsmenu "Power management options" 21321da177e4SLinus Torvalds 2133eceab4acSRussell Kingsource "kernel/power/Kconfig" 21341da177e4SLinus Torvalds 2135f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE 213619a0519dSEzequiel Garcia depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \ 2137f0d75153SUwe Kleine-König CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK 2138f4cb5700SJohannes Berg def_bool y 2139f4cb5700SJohannes Berg 214015e0d9e3SArnd Bergmannconfig ARM_CPU_SUSPEND 21418b6f2499SLorenzo Pieralisi def_bool PM_SLEEP || BL_SWITCHER || ARM_PSCI_FW 21421b9bdf5cSLorenzo Pieralisi depends on ARCH_SUSPEND_POSSIBLE 214315e0d9e3SArnd Bergmann 2144603fb42aSSebastian Capellaconfig ARCH_HIBERNATION_POSSIBLE 2145603fb42aSSebastian Capella bool 2146603fb42aSSebastian Capella depends on MMU 2147603fb42aSSebastian Capella default y if ARCH_SUSPEND_POSSIBLE 2148603fb42aSSebastian Capella 21491da177e4SLinus Torvaldsendmenu 21501da177e4SLinus Torvalds 2151d5950b43SSam Ravnborgsource "net/Kconfig" 2152d5950b43SSam Ravnborg 2153ac25150fSUwe Kleine-Königsource "drivers/Kconfig" 21541da177e4SLinus Torvalds 2155916f743dSKumar Galasource "drivers/firmware/Kconfig" 2156916f743dSKumar Gala 21571da177e4SLinus Torvaldssource "fs/Kconfig" 21581da177e4SLinus Torvalds 21591da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug" 21601da177e4SLinus Torvalds 21611da177e4SLinus Torvaldssource "security/Kconfig" 21621da177e4SLinus Torvalds 21631da177e4SLinus Torvaldssource "crypto/Kconfig" 2164652ccae5SArd Biesheuvelif CRYPTO 2165652ccae5SArd Biesheuvelsource "arch/arm/crypto/Kconfig" 2166652ccae5SArd Biesheuvelendif 21671da177e4SLinus Torvalds 21681da177e4SLinus Torvaldssource "lib/Kconfig" 2169749cf76cSChristoffer Dall 2170749cf76cSChristoffer Dallsource "arch/arm/kvm/Kconfig" 2171