|  | config ARM | 
|  | bool | 
|  | default y | 
|  | select ARCH_HAVE_CUSTOM_GPIO_H | 
|  | select HAVE_AOUT | 
|  | select HAVE_DMA_API_DEBUG | 
|  | select HAVE_IDE if PCI || ISA || PCMCIA | 
|  | select HAVE_DMA_ATTRS | 
|  | select HAVE_DMA_CONTIGUOUS if (CPU_V6 || CPU_V6K || CPU_V7) | 
|  | select HAVE_MEMBLOCK | 
|  | select RTC_LIB | 
|  | select SYS_SUPPORTS_APM_EMULATION | 
|  | select GENERIC_ATOMIC64 if (CPU_V6 || !CPU_32v6K || !AEABI) | 
|  | select HAVE_OPROFILE if (HAVE_PERF_EVENTS) | 
|  | select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL | 
|  | select HAVE_ARCH_KGDB | 
|  | select HAVE_ARCH_TRACEHOOK | 
|  | select HAVE_KPROBES if !XIP_KERNEL | 
|  | select HAVE_KRETPROBES if (HAVE_KPROBES) | 
|  | select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) | 
|  | select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL) | 
|  | select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) | 
|  | select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL) | 
|  | select ARCH_BINFMT_ELF_RANDOMIZE_PIE | 
|  | select HAVE_GENERIC_DMA_COHERENT | 
|  | select HAVE_KERNEL_GZIP | 
|  | select HAVE_KERNEL_LZO | 
|  | select HAVE_KERNEL_LZMA | 
|  | select HAVE_KERNEL_XZ | 
|  | select HAVE_IRQ_WORK | 
|  | select HAVE_PERF_EVENTS | 
|  | select PERF_USE_VMALLOC | 
|  | select HAVE_REGS_AND_STACK_ACCESS_API | 
|  | select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7)) | 
|  | select HAVE_C_RECORDMCOUNT | 
|  | select HAVE_GENERIC_HARDIRQS | 
|  | select HARDIRQS_SW_RESEND | 
|  | select GENERIC_IRQ_PROBE | 
|  | select GENERIC_IRQ_SHOW | 
|  | select GENERIC_IRQ_PROBE | 
|  | select HARDIRQS_SW_RESEND | 
|  | select CPU_PM if (SUSPEND || CPU_IDLE) | 
|  | select GENERIC_PCI_IOMAP | 
|  | select HAVE_BPF_JIT | 
|  | select GENERIC_SMP_IDLE_THREAD | 
|  | select KTIME_SCALAR | 
|  | select GENERIC_CLOCKEVENTS_BROADCAST if SMP | 
|  | help | 
|  | The ARM series is a line of low-power-consumption RISC chip designs | 
|  | licensed by ARM Ltd and targeted at embedded applications and | 
|  | handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer | 
|  | manufactured, but legacy ARM-based PC hardware remains popular in | 
|  | Europe.  There is an ARM Linux project with a web page at | 
|  | <http://www.arm.linux.org.uk/>. | 
|  |  | 
|  | config ARM_HAS_SG_CHAIN | 
|  | bool | 
|  |  | 
|  | config NEED_SG_DMA_LENGTH | 
|  | bool | 
|  |  | 
|  | config ARM_DMA_USE_IOMMU | 
|  | select NEED_SG_DMA_LENGTH | 
|  | select ARM_HAS_SG_CHAIN | 
|  | bool | 
|  |  | 
|  | config HAVE_PWM | 
|  | bool | 
|  |  | 
|  | config MIGHT_HAVE_PCI | 
|  | bool | 
|  |  | 
|  | config SYS_SUPPORTS_APM_EMULATION | 
|  | bool | 
|  |  | 
|  | config GENERIC_GPIO | 
|  | bool | 
|  |  | 
|  | config HAVE_TCM | 
|  | bool | 
|  | select GENERIC_ALLOCATOR | 
|  |  | 
|  | config HAVE_PROC_CPU | 
|  | bool | 
|  |  | 
|  | config NO_IOPORT | 
|  | bool | 
|  |  | 
|  | config EISA | 
|  | bool | 
|  | ---help--- | 
|  | The Extended Industry Standard Architecture (EISA) bus was | 
|  | developed as an open alternative to the IBM MicroChannel bus. | 
|  |  | 
|  | The EISA bus provided some of the features of the IBM MicroChannel | 
|  | bus while maintaining backward compatibility with cards made for | 
|  | the older ISA bus.  The EISA bus saw limited use between 1988 and | 
|  | 1995 when it was made obsolete by the PCI bus. | 
|  |  | 
|  | Say Y here if you are building a kernel for an EISA-based machine. | 
|  |  | 
|  | Otherwise, say N. | 
|  |  | 
|  | config SBUS | 
|  | bool | 
|  |  | 
|  | config STACKTRACE_SUPPORT | 
|  | bool | 
|  | default y | 
|  |  | 
|  | config HAVE_LATENCYTOP_SUPPORT | 
|  | bool | 
|  | depends on !SMP | 
|  | default y | 
|  |  | 
|  | config LOCKDEP_SUPPORT | 
|  | bool | 
|  | default y | 
|  |  | 
|  | config TRACE_IRQFLAGS_SUPPORT | 
|  | bool | 
|  | default y | 
|  |  | 
|  | config GENERIC_LOCKBREAK | 
|  | bool | 
|  | default y | 
|  | depends on SMP && PREEMPT | 
|  |  | 
|  | config RWSEM_GENERIC_SPINLOCK | 
|  | bool | 
|  | default y | 
|  |  | 
|  | config RWSEM_XCHGADD_ALGORITHM | 
|  | bool | 
|  |  | 
|  | config ARCH_HAS_ILOG2_U32 | 
|  | bool | 
|  |  | 
|  | config ARCH_HAS_ILOG2_U64 | 
|  | bool | 
|  |  | 
|  | config ARCH_HAS_CPUFREQ | 
|  | bool | 
|  | help | 
|  | Internal node to signify that the ARCH has CPUFREQ support | 
|  | and that the relevant menu configurations are displayed for | 
|  | it. | 
|  |  | 
|  | config GENERIC_HWEIGHT | 
|  | bool | 
|  | default y | 
|  |  | 
|  | config GENERIC_CALIBRATE_DELAY | 
|  | bool | 
|  | default y | 
|  |  | 
|  | config ARCH_MAY_HAVE_PC_FDC | 
|  | bool | 
|  |  | 
|  | config ZONE_DMA | 
|  | bool | 
|  |  | 
|  | config NEED_DMA_MAP_STATE | 
|  | def_bool y | 
|  |  | 
|  | config ARCH_HAS_DMA_SET_COHERENT_MASK | 
|  | bool | 
|  |  | 
|  | config GENERIC_ISA_DMA | 
|  | bool | 
|  |  | 
|  | config FIQ | 
|  | bool | 
|  |  | 
|  | config NEED_RET_TO_USER | 
|  | bool | 
|  |  | 
|  | config ARCH_MTD_XIP | 
|  | bool | 
|  |  | 
|  | config VECTORS_BASE | 
|  | hex | 
|  | default 0xffff0000 if MMU || CPU_HIGH_VECTOR | 
|  | default DRAM_BASE if REMAP_VECTORS_TO_RAM | 
|  | default 0x00000000 | 
|  | help | 
|  | The base address of exception vectors. | 
|  |  | 
|  | config ARM_PATCH_PHYS_VIRT | 
|  | bool "Patch physical to virtual translations at runtime" if EMBEDDED | 
|  | default y | 
|  | depends on !XIP_KERNEL && MMU | 
|  | depends on !ARCH_REALVIEW || !SPARSEMEM | 
|  | help | 
|  | Patch phys-to-virt and virt-to-phys translation functions at | 
|  | boot and module load time according to the position of the | 
|  | kernel in system memory. | 
|  |  | 
|  | This can only be used with non-XIP MMU kernels where the base | 
|  | of physical memory is at a 16MB boundary. | 
|  |  | 
|  | Only disable this option if you know that you do not require | 
|  | this feature (eg, building a kernel for a single machine) and | 
|  | you need to shrink the kernel to the minimal size. | 
|  |  | 
|  | config NEED_MACH_IO_H | 
|  | bool | 
|  | help | 
|  | Select this when mach/io.h is required to provide special | 
|  | definitions for this platform.  The need for mach/io.h should | 
|  | be avoided when possible. | 
|  |  | 
|  | config NEED_MACH_MEMORY_H | 
|  | bool | 
|  | help | 
|  | Select this when mach/memory.h is required to provide special | 
|  | definitions for this platform.  The need for mach/memory.h should | 
|  | be avoided when possible. | 
|  |  | 
|  | config PHYS_OFFSET | 
|  | hex "Physical address of main memory" if MMU | 
|  | depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H | 
|  | default DRAM_BASE if !MMU | 
|  | help | 
|  | Please provide the physical address corresponding to the | 
|  | location of main memory in your system. | 
|  |  | 
|  | config GENERIC_BUG | 
|  | def_bool y | 
|  | depends on BUG | 
|  |  | 
|  | source "init/Kconfig" | 
|  |  | 
|  | source "kernel/Kconfig.freezer" | 
|  |  | 
|  | menu "System Type" | 
|  |  | 
|  | config MMU | 
|  | bool "MMU-based Paged Memory Management Support" | 
|  | default y | 
|  | help | 
|  | Select if you want MMU-based virtualised addressing space | 
|  | support by paged memory management. If unsure, say 'Y'. | 
|  |  | 
|  | # | 
|  | # The "ARM system type" choice list is ordered alphabetically by option | 
|  | # text.  Please add new entries in the option alphabetic order. | 
|  | # | 
|  | choice | 
|  | prompt "ARM system type" | 
|  | default ARCH_VERSATILE | 
|  |  | 
|  | config ARCH_INTEGRATOR | 
|  | bool "ARM Ltd. Integrator family" | 
|  | select ARM_AMBA | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select CLKDEV_LOOKUP | 
|  | select HAVE_MACH_CLKDEV | 
|  | select HAVE_TCM | 
|  | select ICST | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select PLAT_VERSATILE | 
|  | select PLAT_VERSATILE_FPGA_IRQ | 
|  | select NEED_MACH_IO_H | 
|  | select NEED_MACH_MEMORY_H | 
|  | select SPARSE_IRQ | 
|  | select MULTI_IRQ_HANDLER | 
|  | help | 
|  | Support for ARM's Integrator platform. | 
|  |  | 
|  | config ARCH_REALVIEW | 
|  | bool "ARM Ltd. RealView family" | 
|  | select ARM_AMBA | 
|  | select CLKDEV_LOOKUP | 
|  | select HAVE_MACH_CLKDEV | 
|  | select ICST | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_WANT_OPTIONAL_GPIOLIB | 
|  | select PLAT_VERSATILE | 
|  | select PLAT_VERSATILE_CLCD | 
|  | select ARM_TIMER_SP804 | 
|  | select GPIO_PL061 if GPIOLIB | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | This enables support for ARM Ltd RealView boards. | 
|  |  | 
|  | config ARCH_VERSATILE | 
|  | bool "ARM Ltd. Versatile family" | 
|  | select ARM_AMBA | 
|  | select ARM_VIC | 
|  | select CLKDEV_LOOKUP | 
|  | select HAVE_MACH_CLKDEV | 
|  | select ICST | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_WANT_OPTIONAL_GPIOLIB | 
|  | select PLAT_VERSATILE | 
|  | select PLAT_VERSATILE_CLCD | 
|  | select PLAT_VERSATILE_FPGA_IRQ | 
|  | select ARM_TIMER_SP804 | 
|  | help | 
|  | This enables support for ARM Ltd Versatile board. | 
|  |  | 
|  | config ARCH_VEXPRESS | 
|  | bool "ARM Ltd. Versatile Express family" | 
|  | select ARCH_WANT_OPTIONAL_GPIOLIB | 
|  | select ARM_AMBA | 
|  | select ARM_TIMER_SP804 | 
|  | select CLKDEV_LOOKUP | 
|  | select HAVE_MACH_CLKDEV | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select HAVE_CLK | 
|  | select HAVE_PATA_PLATFORM | 
|  | select ICST | 
|  | select NO_IOPORT | 
|  | select PLAT_VERSATILE | 
|  | select PLAT_VERSATILE_CLCD | 
|  | help | 
|  | This enables support for the ARM Ltd Versatile Express boards. | 
|  |  | 
|  | config ARCH_AT91 | 
|  | bool "Atmel AT91" | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select HAVE_CLK | 
|  | select CLKDEV_LOOKUP | 
|  | select IRQ_DOMAIN | 
|  | select NEED_MACH_IO_H if PCCARD | 
|  | help | 
|  | This enables support for systems based on Atmel | 
|  | AT91RM9200 and AT91SAM9* processors. | 
|  |  | 
|  | config ARCH_BCMRING | 
|  | bool "Broadcom BCMRING" | 
|  | depends on MMU | 
|  | select CPU_V6 | 
|  | select ARM_AMBA | 
|  | select ARM_TIMER_SP804 | 
|  | select CLKDEV_LOOKUP | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_WANT_OPTIONAL_GPIOLIB | 
|  | help | 
|  | Support for Broadcom's BCMRing platform. | 
|  |  | 
|  | config ARCH_HIGHBANK | 
|  | bool "Calxeda Highbank-based" | 
|  | select ARCH_WANT_OPTIONAL_GPIOLIB | 
|  | select ARM_AMBA | 
|  | select ARM_GIC | 
|  | select ARM_TIMER_SP804 | 
|  | select CACHE_L2X0 | 
|  | select CLKDEV_LOOKUP | 
|  | select CPU_V7 | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select HAVE_ARM_SCU | 
|  | select HAVE_SMP | 
|  | select SPARSE_IRQ | 
|  | select USE_OF | 
|  | help | 
|  | Support for the Calxeda Highbank SoC based boards. | 
|  |  | 
|  | config ARCH_CLPS711X | 
|  | bool "Cirrus Logic CLPS711x/EP721x/EP731x-based" | 
|  | select CPU_ARM720T | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | Support for Cirrus Logic 711x/721x/731x based boards. | 
|  |  | 
|  | config ARCH_CNS3XXX | 
|  | bool "Cavium Networks CNS3XXX family" | 
|  | select CPU_V6K | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARM_GIC | 
|  | select MIGHT_HAVE_CACHE_L2X0 | 
|  | select MIGHT_HAVE_PCI | 
|  | select PCI_DOMAINS if PCI | 
|  | help | 
|  | Support for Cavium Networks CNS3XXX platform. | 
|  |  | 
|  | config ARCH_GEMINI | 
|  | bool "Cortina Systems Gemini" | 
|  | select CPU_FA526 | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | help | 
|  | Support for the Cortina Systems Gemini family SoCs | 
|  |  | 
|  | config ARCH_PRIMA2 | 
|  | bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform" | 
|  | select CPU_V7 | 
|  | select NO_IOPORT | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select CLKDEV_LOOKUP | 
|  | select GENERIC_IRQ_CHIP | 
|  | select MIGHT_HAVE_CACHE_L2X0 | 
|  | select PINCTRL | 
|  | select PINCTRL_SIRF | 
|  | select USE_OF | 
|  | select ZONE_DMA | 
|  | help | 
|  | Support for CSR SiRFSoC ARM Cortex A9 Platform | 
|  |  | 
|  | config ARCH_EBSA110 | 
|  | bool "EBSA-110" | 
|  | select CPU_SA110 | 
|  | select ISA | 
|  | select NO_IOPORT | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select NEED_MACH_IO_H | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | This is an evaluation board for the StrongARM processor available | 
|  | from Digital. It has limited hardware on-board, including an | 
|  | Ethernet interface, two PCMCIA sockets, two serial ports and a | 
|  | parallel port. | 
|  |  | 
|  | config ARCH_EP93XX | 
|  | bool "EP93xx-based" | 
|  | select CPU_ARM920T | 
|  | select ARM_AMBA | 
|  | select ARM_VIC | 
|  | select CLKDEV_LOOKUP | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select ARCH_HAS_HOLES_MEMORYMODEL | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | This enables support for the Cirrus EP93xx series of CPUs. | 
|  |  | 
|  | config ARCH_FOOTBRIDGE | 
|  | bool "FootBridge" | 
|  | select CPU_SA110 | 
|  | select FOOTBRIDGE | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select HAVE_IDE | 
|  | select NEED_MACH_IO_H | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | Support for systems based on the DC21285 companion chip | 
|  | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | 
|  |  | 
|  | config ARCH_MXC | 
|  | bool "Freescale MXC/iMX-based" | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select CLKDEV_LOOKUP | 
|  | select CLKSRC_MMIO | 
|  | select GENERIC_IRQ_CHIP | 
|  | select MULTI_IRQ_HANDLER | 
|  | help | 
|  | Support for Freescale MXC/iMX-based family of processors | 
|  |  | 
|  | config ARCH_MXS | 
|  | bool "Freescale MXS-based" | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select CLKDEV_LOOKUP | 
|  | select CLKSRC_MMIO | 
|  | select COMMON_CLK | 
|  | select HAVE_CLK_PREPARE | 
|  | select PINCTRL | 
|  | select USE_OF | 
|  | help | 
|  | Support for Freescale MXS-based family of processors | 
|  |  | 
|  | config ARCH_NETX | 
|  | bool "Hilscher NetX based" | 
|  | select CLKSRC_MMIO | 
|  | select CPU_ARM926T | 
|  | select ARM_VIC | 
|  | select GENERIC_CLOCKEVENTS | 
|  | help | 
|  | This enables support for systems based on the Hilscher NetX Soc | 
|  |  | 
|  | config ARCH_H720X | 
|  | bool "Hynix HMS720x-based" | 
|  | select CPU_ARM720T | 
|  | select ISA_DMA_API | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | help | 
|  | This enables support for systems based on the Hynix HMS720x | 
|  |  | 
|  | config ARCH_IOP13XX | 
|  | bool "IOP13xx-based" | 
|  | depends on MMU | 
|  | select CPU_XSC3 | 
|  | select PLAT_IOP | 
|  | select PCI | 
|  | select ARCH_SUPPORTS_MSI | 
|  | select VMSPLIT_1G | 
|  | select NEED_MACH_IO_H | 
|  | select NEED_MACH_MEMORY_H | 
|  | select NEED_RET_TO_USER | 
|  | help | 
|  | Support for Intel's IOP13XX (XScale) family of processors. | 
|  |  | 
|  | config ARCH_IOP32X | 
|  | bool "IOP32x-based" | 
|  | depends on MMU | 
|  | select CPU_XSCALE | 
|  | select NEED_MACH_IO_H | 
|  | select NEED_RET_TO_USER | 
|  | select PLAT_IOP | 
|  | select PCI | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | help | 
|  | Support for Intel's 80219 and IOP32X (XScale) family of | 
|  | processors. | 
|  |  | 
|  | config ARCH_IOP33X | 
|  | bool "IOP33x-based" | 
|  | depends on MMU | 
|  | select CPU_XSCALE | 
|  | select NEED_MACH_IO_H | 
|  | select NEED_RET_TO_USER | 
|  | select PLAT_IOP | 
|  | select PCI | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | help | 
|  | Support for Intel's IOP33X (XScale) family of processors. | 
|  |  | 
|  | config ARCH_IXP4XX | 
|  | bool "IXP4xx-based" | 
|  | depends on MMU | 
|  | select ARCH_HAS_DMA_SET_COHERENT_MASK | 
|  | select CLKSRC_MMIO | 
|  | select CPU_XSCALE | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select MIGHT_HAVE_PCI | 
|  | select NEED_MACH_IO_H | 
|  | select DMABOUNCE if PCI | 
|  | help | 
|  | Support for Intel's IXP4XX (XScale) family of processors. | 
|  |  | 
|  | config ARCH_DOVE | 
|  | bool "Marvell Dove" | 
|  | select CPU_V7 | 
|  | select PCI | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select NEED_MACH_IO_H | 
|  | select PLAT_ORION | 
|  | help | 
|  | Support for the Marvell Dove SoC 88AP510 | 
|  |  | 
|  | config ARCH_KIRKWOOD | 
|  | bool "Marvell Kirkwood" | 
|  | select CPU_FEROCEON | 
|  | select PCI | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select NEED_MACH_IO_H | 
|  | select PLAT_ORION | 
|  | help | 
|  | Support for the following Marvell Kirkwood series SoCs: | 
|  | 88F6180, 88F6192 and 88F6281. | 
|  |  | 
|  | config ARCH_LPC32XX | 
|  | bool "NXP LPC32XX" | 
|  | select CLKSRC_MMIO | 
|  | select CPU_ARM926T | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select HAVE_IDE | 
|  | select ARM_AMBA | 
|  | select USB_ARCH_HAS_OHCI | 
|  | select CLKDEV_LOOKUP | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select USE_OF | 
|  | help | 
|  | Support for the NXP LPC32XX family of processors | 
|  |  | 
|  | config ARCH_MV78XX0 | 
|  | bool "Marvell MV78xx0" | 
|  | select CPU_FEROCEON | 
|  | select PCI | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select NEED_MACH_IO_H | 
|  | select PLAT_ORION | 
|  | help | 
|  | Support for the following Marvell MV78xx0 series SoCs: | 
|  | MV781x0, MV782x0. | 
|  |  | 
|  | config ARCH_ORION5X | 
|  | bool "Marvell Orion" | 
|  | depends on MMU | 
|  | select CPU_FEROCEON | 
|  | select PCI | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select PLAT_ORION | 
|  | help | 
|  | Support for the following Marvell Orion 5x series SoCs: | 
|  | Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), | 
|  | Orion-2 (5281), Orion-1-90 (6183). | 
|  |  | 
|  | config ARCH_MMP | 
|  | bool "Marvell PXA168/910/MMP2" | 
|  | depends on MMU | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select CLKDEV_LOOKUP | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select GPIO_PXA | 
|  | select IRQ_DOMAIN | 
|  | select PLAT_PXA | 
|  | select SPARSE_IRQ | 
|  | select GENERIC_ALLOCATOR | 
|  | help | 
|  | Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. | 
|  |  | 
|  | config ARCH_KS8695 | 
|  | bool "Micrel/Kendin KS8695" | 
|  | select CPU_ARM922T | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based | 
|  | System-on-Chip devices. | 
|  |  | 
|  | config ARCH_W90X900 | 
|  | bool "Nuvoton W90X900 CPU" | 
|  | select CPU_ARM926T | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select CLKDEV_LOOKUP | 
|  | select CLKSRC_MMIO | 
|  | select GENERIC_CLOCKEVENTS | 
|  | help | 
|  | Support for Nuvoton (Winbond logic dept.) ARM9 processor, | 
|  | At present, the w90x900 has been renamed nuc900, regarding | 
|  | the ARM series product line, you can login the following | 
|  | link address to know more. | 
|  |  | 
|  | <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ | 
|  | ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> | 
|  |  | 
|  | config ARCH_TEGRA | 
|  | bool "NVIDIA Tegra" | 
|  | select CLKDEV_LOOKUP | 
|  | select CLKSRC_MMIO | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select GENERIC_GPIO | 
|  | select HAVE_CLK | 
|  | select HAVE_SMP | 
|  | select MIGHT_HAVE_CACHE_L2X0 | 
|  | select NEED_MACH_IO_H if PCI | 
|  | select ARCH_HAS_CPUFREQ | 
|  | help | 
|  | This enables support for NVIDIA Tegra based systems (Tegra APX, | 
|  | Tegra 6xx and Tegra 2 series). | 
|  |  | 
|  | config ARCH_PICOXCELL | 
|  | bool "Picochip picoXcell" | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select ARM_PATCH_PHYS_VIRT | 
|  | select ARM_VIC | 
|  | select CPU_V6K | 
|  | select DW_APB_TIMER | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select GENERIC_GPIO | 
|  | select HAVE_TCM | 
|  | select NO_IOPORT | 
|  | select SPARSE_IRQ | 
|  | select USE_OF | 
|  | help | 
|  | This enables support for systems based on the Picochip picoXcell | 
|  | family of Femtocell devices.  The picoxcell support requires device tree | 
|  | for all boards. | 
|  |  | 
|  | config ARCH_PNX4008 | 
|  | bool "Philips Nexperia PNX4008 Mobile" | 
|  | select CPU_ARM926T | 
|  | select CLKDEV_LOOKUP | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | help | 
|  | This enables support for Philips PNX4008 mobile platform. | 
|  |  | 
|  | config ARCH_PXA | 
|  | bool "PXA2xx/PXA3xx-based" | 
|  | depends on MMU | 
|  | select ARCH_MTD_XIP | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select CLKDEV_LOOKUP | 
|  | select CLKSRC_MMIO | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select GPIO_PXA | 
|  | select PLAT_PXA | 
|  | select SPARSE_IRQ | 
|  | select AUTO_ZRELADDR | 
|  | select MULTI_IRQ_HANDLER | 
|  | select ARM_CPU_SUSPEND if PM | 
|  | select HAVE_IDE | 
|  | help | 
|  | Support for Intel/Marvell's PXA2xx/PXA3xx processor line. | 
|  |  | 
|  | config ARCH_MSM | 
|  | bool "Qualcomm MSM" | 
|  | select HAVE_CLK | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select CLKDEV_LOOKUP | 
|  | help | 
|  | Support for Qualcomm MSM/QSD based systems.  This runs on the | 
|  | apps processor of the MSM/QSD and depends on a shared memory | 
|  | interface to the modem processor which runs the baseband | 
|  | stack and controls some vital subsystems | 
|  | (clock and power control, etc). | 
|  |  | 
|  | config ARCH_SHMOBILE | 
|  | bool "Renesas SH-Mobile / R-Mobile" | 
|  | select HAVE_CLK | 
|  | select CLKDEV_LOOKUP | 
|  | select HAVE_MACH_CLKDEV | 
|  | select HAVE_SMP | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select MIGHT_HAVE_CACHE_L2X0 | 
|  | select NO_IOPORT | 
|  | select SPARSE_IRQ | 
|  | select MULTI_IRQ_HANDLER | 
|  | select PM_GENERIC_DOMAINS if PM | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | Support for Renesas's SH-Mobile and R-Mobile ARM platforms. | 
|  |  | 
|  | config ARCH_RPC | 
|  | bool "RiscPC" | 
|  | select ARCH_ACORN | 
|  | select FIQ | 
|  | select ARCH_MAY_HAVE_PC_FDC | 
|  | select HAVE_PATA_PLATFORM | 
|  | select ISA_DMA_API | 
|  | select NO_IOPORT | 
|  | select ARCH_SPARSEMEM_ENABLE | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select HAVE_IDE | 
|  | select NEED_MACH_IO_H | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | On the Acorn Risc-PC, Linux can support the internal IDE disk and | 
|  | CD-ROM interface, serial and parallel port, and the floppy drive. | 
|  |  | 
|  | config ARCH_SA1100 | 
|  | bool "SA1100-based" | 
|  | select CLKSRC_MMIO | 
|  | select CPU_SA1100 | 
|  | select ISA | 
|  | select ARCH_SPARSEMEM_ENABLE | 
|  | select ARCH_MTD_XIP | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select CPU_FREQ | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select CLKDEV_LOOKUP | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select HAVE_IDE | 
|  | select NEED_MACH_MEMORY_H | 
|  | select SPARSE_IRQ | 
|  | help | 
|  | Support for StrongARM 11x0 based boards. | 
|  |  | 
|  | config ARCH_S3C24XX | 
|  | bool "Samsung S3C24XX SoCs" | 
|  | select GENERIC_GPIO | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select HAVE_CLK | 
|  | select CLKDEV_LOOKUP | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select HAVE_S3C2410_I2C if I2C | 
|  | select HAVE_S3C_RTC if RTC_CLASS | 
|  | select HAVE_S3C2410_WATCHDOG if WATCHDOG | 
|  | select NEED_MACH_IO_H | 
|  | help | 
|  | Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443 | 
|  | and S3C2450 SoCs based systems, such as the Simtec Electronics BAST | 
|  | (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the | 
|  | Samsung SMDK2410 development board (and derivatives). | 
|  |  | 
|  | config ARCH_S3C64XX | 
|  | bool "Samsung S3C64XX" | 
|  | select PLAT_SAMSUNG | 
|  | select CPU_V6 | 
|  | select ARM_VIC | 
|  | select HAVE_CLK | 
|  | select HAVE_TCM | 
|  | select CLKDEV_LOOKUP | 
|  | select NO_IOPORT | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select SAMSUNG_CLKSRC | 
|  | select SAMSUNG_IRQ_VIC_TIMER | 
|  | select S3C_GPIO_TRACK | 
|  | select S3C_DEV_NAND | 
|  | select USB_ARCH_HAS_OHCI | 
|  | select SAMSUNG_GPIOLIB_4BIT | 
|  | select HAVE_S3C2410_I2C if I2C | 
|  | select HAVE_S3C2410_WATCHDOG if WATCHDOG | 
|  | help | 
|  | Samsung S3C64XX series based systems | 
|  |  | 
|  | config ARCH_S5P64X0 | 
|  | bool "Samsung S5P6440 S5P6450" | 
|  | select CPU_V6 | 
|  | select GENERIC_GPIO | 
|  | select HAVE_CLK | 
|  | select CLKDEV_LOOKUP | 
|  | select CLKSRC_MMIO | 
|  | select HAVE_S3C2410_WATCHDOG if WATCHDOG | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select HAVE_S3C2410_I2C if I2C | 
|  | select HAVE_S3C_RTC if RTC_CLASS | 
|  | help | 
|  | Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440, | 
|  | SMDK6450. | 
|  |  | 
|  | config ARCH_S5PC100 | 
|  | bool "Samsung S5PC100" | 
|  | select GENERIC_GPIO | 
|  | select HAVE_CLK | 
|  | select CLKDEV_LOOKUP | 
|  | select CPU_V7 | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select HAVE_S3C2410_I2C if I2C | 
|  | select HAVE_S3C_RTC if RTC_CLASS | 
|  | select HAVE_S3C2410_WATCHDOG if WATCHDOG | 
|  | help | 
|  | Samsung S5PC100 series based systems | 
|  |  | 
|  | config ARCH_S5PV210 | 
|  | bool "Samsung S5PV210/S5PC110" | 
|  | select CPU_V7 | 
|  | select ARCH_SPARSEMEM_ENABLE | 
|  | select ARCH_HAS_HOLES_MEMORYMODEL | 
|  | select GENERIC_GPIO | 
|  | select HAVE_CLK | 
|  | select CLKDEV_LOOKUP | 
|  | select CLKSRC_MMIO | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select HAVE_S3C2410_I2C if I2C | 
|  | select HAVE_S3C_RTC if RTC_CLASS | 
|  | select HAVE_S3C2410_WATCHDOG if WATCHDOG | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | Samsung S5PV210/S5PC110 series based systems | 
|  |  | 
|  | config ARCH_EXYNOS | 
|  | bool "SAMSUNG EXYNOS" | 
|  | select CPU_V7 | 
|  | select ARCH_SPARSEMEM_ENABLE | 
|  | select ARCH_HAS_HOLES_MEMORYMODEL | 
|  | select GENERIC_GPIO | 
|  | select HAVE_CLK | 
|  | select CLKDEV_LOOKUP | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select HAVE_S3C_RTC if RTC_CLASS | 
|  | select HAVE_S3C2410_I2C if I2C | 
|  | select HAVE_S3C2410_WATCHDOG if WATCHDOG | 
|  | select NEED_MACH_MEMORY_H | 
|  | help | 
|  | Support for SAMSUNG's EXYNOS SoCs (EXYNOS4/5) | 
|  |  | 
|  | config ARCH_SHARK | 
|  | bool "Shark" | 
|  | select CPU_SA110 | 
|  | select ISA | 
|  | select ISA_DMA | 
|  | select ZONE_DMA | 
|  | select PCI | 
|  | select ARCH_USES_GETTIMEOFFSET | 
|  | select NEED_MACH_MEMORY_H | 
|  | select NEED_MACH_IO_H | 
|  | help | 
|  | Support for the StrongARM based Digital DNARD machine, also known | 
|  | as "Shark" (<http://www.shark-linux.de/shark.html>). | 
|  |  | 
|  | config ARCH_U300 | 
|  | bool "ST-Ericsson U300 Series" | 
|  | depends on MMU | 
|  | select CLKSRC_MMIO | 
|  | select CPU_ARM926T | 
|  | select HAVE_TCM | 
|  | select ARM_AMBA | 
|  | select ARM_PATCH_PHYS_VIRT | 
|  | select ARM_VIC | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select CLKDEV_LOOKUP | 
|  | select HAVE_MACH_CLKDEV | 
|  | select GENERIC_GPIO | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | help | 
|  | Support for ST-Ericsson U300 series mobile platforms. | 
|  |  | 
|  | config ARCH_U8500 | 
|  | bool "ST-Ericsson U8500 Series" | 
|  | depends on MMU | 
|  | select CPU_V7 | 
|  | select ARM_AMBA | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select CLKDEV_LOOKUP | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select HAVE_SMP | 
|  | select MIGHT_HAVE_CACHE_L2X0 | 
|  | help | 
|  | Support for ST-Ericsson's Ux500 architecture | 
|  |  | 
|  | config ARCH_NOMADIK | 
|  | bool "STMicroelectronics Nomadik" | 
|  | select ARM_AMBA | 
|  | select ARM_VIC | 
|  | select CPU_ARM926T | 
|  | select CLKDEV_LOOKUP | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select PINCTRL | 
|  | select MIGHT_HAVE_CACHE_L2X0 | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | help | 
|  | Support for the Nomadik platform by ST-Ericsson | 
|  |  | 
|  | config ARCH_DAVINCI | 
|  | bool "TI DaVinci" | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select ZONE_DMA | 
|  | select HAVE_IDE | 
|  | select CLKDEV_LOOKUP | 
|  | select GENERIC_ALLOCATOR | 
|  | select GENERIC_IRQ_CHIP | 
|  | select ARCH_HAS_HOLES_MEMORYMODEL | 
|  | help | 
|  | Support for TI's DaVinci platform. | 
|  |  | 
|  | config ARCH_OMAP | 
|  | bool "TI OMAP" | 
|  | select HAVE_CLK | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select CLKSRC_MMIO | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_HAS_HOLES_MEMORYMODEL | 
|  | help | 
|  | Support for TI's OMAP platform (OMAP1/2/3/4). | 
|  |  | 
|  | config PLAT_SPEAR | 
|  | bool "ST SPEAr" | 
|  | select ARM_AMBA | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select CLKDEV_LOOKUP | 
|  | select COMMON_CLK | 
|  | select CLKSRC_MMIO | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select HAVE_CLK | 
|  | help | 
|  | Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). | 
|  |  | 
|  | config ARCH_VT8500 | 
|  | bool "VIA/WonderMedia 85xx" | 
|  | select CPU_ARM926T | 
|  | select GENERIC_GPIO | 
|  | select ARCH_HAS_CPUFREQ | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select ARCH_REQUIRE_GPIOLIB | 
|  | select HAVE_PWM | 
|  | help | 
|  | Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip. | 
|  |  | 
|  | config ARCH_ZYNQ | 
|  | bool "Xilinx Zynq ARM Cortex A9 Platform" | 
|  | select CPU_V7 | 
|  | select GENERIC_CLOCKEVENTS | 
|  | select CLKDEV_LOOKUP | 
|  | select ARM_GIC | 
|  | select ARM_AMBA | 
|  | select ICST | 
|  | select MIGHT_HAVE_CACHE_L2X0 | 
|  | select USE_OF | 
|  | help | 
|  | Support for Xilinx Zynq ARM Cortex A9 Platform | 
|  | endchoice | 
|  |  | 
|  | # | 
|  | # This is sorted alphabetically by mach-* pathname.  However, plat-* | 
|  | # Kconfigs may be included either alphabetically (according to the | 
|  | # plat- suffix) or along side the corresponding mach-* source. | 
|  | # | 
|  | source "arch/arm/mach-at91/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-bcmring/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-clps711x/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-cns3xxx/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-davinci/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-dove/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-ep93xx/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-footbridge/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-gemini/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-h720x/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-integrator/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-iop32x/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-iop33x/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-iop13xx/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-ixp4xx/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-kirkwood/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-ks8695/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-lpc32xx/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-msm/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-mv78xx0/Kconfig" | 
|  |  | 
|  | source "arch/arm/plat-mxc/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-mxs/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-netx/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-nomadik/Kconfig" | 
|  | source "arch/arm/plat-nomadik/Kconfig" | 
|  |  | 
|  | source "arch/arm/plat-omap/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-omap1/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-omap2/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-orion5x/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-pxa/Kconfig" | 
|  | source "arch/arm/plat-pxa/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-mmp/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-realview/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-sa1100/Kconfig" | 
|  |  | 
|  | source "arch/arm/plat-samsung/Kconfig" | 
|  | source "arch/arm/plat-s3c24xx/Kconfig" | 
|  |  | 
|  | source "arch/arm/plat-spear/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-s3c24xx/Kconfig" | 
|  | if ARCH_S3C24XX | 
|  | source "arch/arm/mach-s3c2412/Kconfig" | 
|  | source "arch/arm/mach-s3c2440/Kconfig" | 
|  | endif | 
|  |  | 
|  | if ARCH_S3C64XX | 
|  | source "arch/arm/mach-s3c64xx/Kconfig" | 
|  | endif | 
|  |  | 
|  | source "arch/arm/mach-s5p64x0/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-s5pc100/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-s5pv210/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-exynos/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-shmobile/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-tegra/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-u300/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-ux500/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-versatile/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-vexpress/Kconfig" | 
|  | source "arch/arm/plat-versatile/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-vt8500/Kconfig" | 
|  |  | 
|  | source "arch/arm/mach-w90x900/Kconfig" | 
|  |  | 
|  | # Definitions to make life easier | 
|  | config ARCH_ACORN | 
|  | bool | 
|  |  | 
|  | config PLAT_IOP | 
|  | bool | 
|  | select GENERIC_CLOCKEVENTS | 
|  |  | 
|  | config PLAT_ORION | 
|  | bool | 
|  | select CLKSRC_MMIO | 
|  | select GENERIC_IRQ_CHIP | 
|  | select COMMON_CLK | 
|  |  | 
|  | config PLAT_PXA | 
|  | bool | 
|  |  | 
|  | config PLAT_VERSATILE | 
|  | bool | 
|  |  | 
|  | config ARM_TIMER_SP804 | 
|  | bool | 
|  | select CLKSRC_MMIO | 
|  | select HAVE_SCHED_CLOCK | 
|  |  | 
|  | source arch/arm/mm/Kconfig | 
|  |  | 
|  | config ARM_NR_BANKS | 
|  | int | 
|  | default 16 if ARCH_EP93XX | 
|  | default 8 | 
|  |  | 
|  | config IWMMXT | 
|  | bool "Enable iWMMXt support" | 
|  | depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 | 
|  | default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP | 
|  | help | 
|  | Enable support for iWMMXt context switching at run time if | 
|  | running on a CPU that supports it. | 
|  |  | 
|  | config XSCALE_PMU | 
|  | bool | 
|  | depends on CPU_XSCALE | 
|  | default y | 
|  |  | 
|  | config CPU_HAS_PMU | 
|  | depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \ | 
|  | (!ARCH_OMAP3 || OMAP3_EMU) | 
|  | default y | 
|  | bool | 
|  |  | 
|  | config MULTI_IRQ_HANDLER | 
|  | bool | 
|  | help | 
|  | Allow each machine to specify it's own IRQ handler at run time. | 
|  |  | 
|  | if !MMU | 
|  | source "arch/arm/Kconfig-nommu" | 
|  | endif | 
|  |  | 
|  | config ARM_ERRATA_326103 | 
|  | bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory" | 
|  | depends on CPU_V6 | 
|  | help | 
|  | Executing a SWP instruction to read-only memory does not set bit 11 | 
|  | of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to | 
|  | treat the access as a read, preventing a COW from occurring and | 
|  | causing the faulting task to livelock. | 
|  |  | 
|  | config ARM_ERRATA_411920 | 
|  | bool "ARM errata: Invalidation of the Instruction Cache operation can fail" | 
|  | depends on CPU_V6 || CPU_V6K | 
|  | help | 
|  | Invalidation of the Instruction Cache operation can | 
|  | fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. | 
|  | It does not affect the MPCore. This option enables the ARM Ltd. | 
|  | recommended workaround. | 
|  |  | 
|  | config ARM_ERRATA_430973 | 
|  | bool "ARM errata: Stale prediction on replaced interworking branch" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables the workaround for the 430973 Cortex-A8 | 
|  | (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb | 
|  | interworking branch is replaced with another code sequence at the | 
|  | same virtual address, whether due to self-modifying code or virtual | 
|  | to physical address re-mapping, Cortex-A8 does not recover from the | 
|  | stale interworking branch prediction. This results in Cortex-A8 | 
|  | executing the new code sequence in the incorrect ARM or Thumb state. | 
|  | The workaround enables the BTB/BTAC operations by setting ACTLR.IBE | 
|  | and also flushes the branch target cache at every context switch. | 
|  | Note that setting specific bits in the ACTLR register may not be | 
|  | available in non-secure mode. | 
|  |  | 
|  | config ARM_ERRATA_458693 | 
|  | bool "ARM errata: Processor deadlock when a false hazard is created" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables the workaround for the 458693 Cortex-A8 (r2p0) | 
|  | erratum. For very specific sequences of memory operations, it is | 
|  | possible for a hazard condition intended for a cache line to instead | 
|  | be incorrectly associated with a different cache line. This false | 
|  | hazard might then cause a processor deadlock. The workaround enables | 
|  | the L1 caching of the NEON accesses and disables the PLD instruction | 
|  | in the ACTLR register. Note that setting specific bits in the ACTLR | 
|  | register may not be available in non-secure mode. | 
|  |  | 
|  | config ARM_ERRATA_460075 | 
|  | bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables the workaround for the 460075 Cortex-A8 (r2p0) | 
|  | erratum. Any asynchronous access to the L2 cache may encounter a | 
|  | situation in which recent store transactions to the L2 cache are lost | 
|  | and overwritten with stale memory contents from external memory. The | 
|  | workaround disables the write-allocate mode for the L2 cache via the | 
|  | ACTLR register. Note that setting specific bits in the ACTLR register | 
|  | may not be available in non-secure mode. | 
|  |  | 
|  | config ARM_ERRATA_742230 | 
|  | bool "ARM errata: DMB operation may be faulty" | 
|  | depends on CPU_V7 && SMP | 
|  | help | 
|  | This option enables the workaround for the 742230 Cortex-A9 | 
|  | (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction | 
|  | between two write operations may not ensure the correct visibility | 
|  | ordering of the two writes. This workaround sets a specific bit in | 
|  | the diagnostic register of the Cortex-A9 which causes the DMB | 
|  | instruction to behave as a DSB, ensuring the correct behaviour of | 
|  | the two writes. | 
|  |  | 
|  | config ARM_ERRATA_742231 | 
|  | bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" | 
|  | depends on CPU_V7 && SMP | 
|  | help | 
|  | This option enables the workaround for the 742231 Cortex-A9 | 
|  | (r2p0..r2p2) erratum. Under certain conditions, specific to the | 
|  | Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode, | 
|  | accessing some data located in the same cache line, may get corrupted | 
|  | data due to bad handling of the address hazard when the line gets | 
|  | replaced from one of the CPUs at the same time as another CPU is | 
|  | accessing it. This workaround sets specific bits in the diagnostic | 
|  | register of the Cortex-A9 which reduces the linefill issuing | 
|  | capabilities of the processor. | 
|  |  | 
|  | config PL310_ERRATA_588369 | 
|  | bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines" | 
|  | depends on CACHE_L2X0 | 
|  | help | 
|  | The PL310 L2 cache controller implements three types of Clean & | 
|  | Invalidate maintenance operations: by Physical Address | 
|  | (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). | 
|  | They are architecturally defined to behave as the execution of a | 
|  | clean operation followed immediately by an invalidate operation, | 
|  | both performing to the same memory location. This functionality | 
|  | is not correctly implemented in PL310 as clean lines are not | 
|  | invalidated as a result of these operations. | 
|  |  | 
|  | config ARM_ERRATA_720789 | 
|  | bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables the workaround for the 720789 Cortex-A9 (prior to | 
|  | r2p0) erratum. A faulty ASID can be sent to the other CPUs for the | 
|  | broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. | 
|  | As a consequence of this erratum, some TLB entries which should be | 
|  | invalidated are not, resulting in an incoherency in the system page | 
|  | tables. The workaround changes the TLB flushing routines to invalidate | 
|  | entries regardless of the ASID. | 
|  |  | 
|  | config PL310_ERRATA_727915 | 
|  | bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption" | 
|  | depends on CACHE_L2X0 | 
|  | help | 
|  | PL310 implements the Clean & Invalidate by Way L2 cache maintenance | 
|  | operation (offset 0x7FC). This operation runs in background so that | 
|  | PL310 can handle normal accesses while it is in progress. Under very | 
|  | rare circumstances, due to this erratum, write data can be lost when | 
|  | PL310 treats a cacheable write transaction during a Clean & | 
|  | Invalidate by Way operation. | 
|  |  | 
|  | config ARM_ERRATA_743622 | 
|  | bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables the workaround for the 743622 Cortex-A9 | 
|  | (r2p*) erratum. Under very rare conditions, a faulty | 
|  | optimisation in the Cortex-A9 Store Buffer may lead to data | 
|  | corruption. This workaround sets a specific bit in the diagnostic | 
|  | register of the Cortex-A9 which disables the Store Buffer | 
|  | optimisation, preventing the defect from occurring. This has no | 
|  | visible impact on the overall performance or power consumption of the | 
|  | processor. | 
|  |  | 
|  | config ARM_ERRATA_751472 | 
|  | bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables the workaround for the 751472 Cortex-A9 (prior | 
|  | to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the | 
|  | completion of a following broadcasted operation if the second | 
|  | operation is received by a CPU before the ICIALLUIS has completed, | 
|  | potentially leading to corrupted entries in the cache or TLB. | 
|  |  | 
|  | config PL310_ERRATA_753970 | 
|  | bool "PL310 errata: cache sync operation may be faulty" | 
|  | depends on CACHE_PL310 | 
|  | help | 
|  | This option enables the workaround for the 753970 PL310 (r3p0) erratum. | 
|  |  | 
|  | Under some condition the effect of cache sync operation on | 
|  | the store buffer still remains when the operation completes. | 
|  | This means that the store buffer is always asked to drain and | 
|  | this prevents it from merging any further writes. The workaround | 
|  | is to replace the normal offset of cache sync operation (0x730) | 
|  | by another offset targeting an unmapped PL310 register 0x740. | 
|  | This has the same effect as the cache sync operation: store buffer | 
|  | drain and waiting for all buffers empty. | 
|  |  | 
|  | config ARM_ERRATA_754322 | 
|  | bool "ARM errata: possible faulty MMU translations following an ASID switch" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables the workaround for the 754322 Cortex-A9 (r2p*, | 
|  | r3p*) erratum. A speculative memory access may cause a page table walk | 
|  | which starts prior to an ASID switch but completes afterwards. This | 
|  | can populate the micro-TLB with a stale entry which may be hit with | 
|  | the new ASID. This workaround places two dsb instructions in the mm | 
|  | switching code so that no page table walks can cross the ASID switch. | 
|  |  | 
|  | config ARM_ERRATA_754327 | 
|  | bool "ARM errata: no automatic Store Buffer drain" | 
|  | depends on CPU_V7 && SMP | 
|  | help | 
|  | This option enables the workaround for the 754327 Cortex-A9 (prior to | 
|  | r2p0) erratum. The Store Buffer does not have any automatic draining | 
|  | mechanism and therefore a livelock may occur if an external agent | 
|  | continuously polls a memory location waiting to observe an update. | 
|  | This workaround defines cpu_relax() as smp_mb(), preventing correctly | 
|  | written polling loops from denying visibility of updates to memory. | 
|  |  | 
|  | config ARM_ERRATA_364296 | 
|  | bool "ARM errata: Possible cache data corruption with hit-under-miss enabled" | 
|  | depends on CPU_V6 && !SMP | 
|  | help | 
|  | This options enables the workaround for the 364296 ARM1136 | 
|  | r0p2 erratum (possible cache data corruption with | 
|  | hit-under-miss enabled). It sets the undocumented bit 31 in | 
|  | the auxiliary control register and the FI bit in the control | 
|  | register, thus disabling hit-under-miss without putting the | 
|  | processor into full low interrupt latency mode. ARM11MPCore | 
|  | is not affected. | 
|  |  | 
|  | config ARM_ERRATA_764369 | 
|  | bool "ARM errata: Data cache line maintenance operation by MVA may not succeed" | 
|  | depends on CPU_V7 && SMP | 
|  | help | 
|  | This option enables the workaround for erratum 764369 | 
|  | affecting Cortex-A9 MPCore with two or more processors (all | 
|  | current revisions). Under certain timing circumstances, a data | 
|  | cache line maintenance operation by MVA targeting an Inner | 
|  | Shareable memory region may fail to proceed up to either the | 
|  | Point of Coherency or to the Point of Unification of the | 
|  | system. This workaround adds a DSB instruction before the | 
|  | relevant cache maintenance functions and sets a specific bit | 
|  | in the diagnostic control register of the SCU. | 
|  |  | 
|  | config PL310_ERRATA_769419 | 
|  | bool "PL310 errata: no automatic Store Buffer drain" | 
|  | depends on CACHE_L2X0 | 
|  | help | 
|  | On revisions of the PL310 prior to r3p2, the Store Buffer does | 
|  | not automatically drain. This can cause normal, non-cacheable | 
|  | writes to be retained when the memory system is idle, leading | 
|  | to suboptimal I/O performance for drivers using coherent DMA. | 
|  | This option adds a write barrier to the cpu_idle loop so that, | 
|  | on systems with an outer cache, the store buffer is drained | 
|  | explicitly. | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | source "arch/arm/common/Kconfig" | 
|  |  | 
|  | menu "Bus support" | 
|  |  | 
|  | config ARM_AMBA | 
|  | bool | 
|  |  | 
|  | config ISA | 
|  | bool | 
|  | help | 
|  | Find out whether you have ISA slots on your motherboard.  ISA is the | 
|  | name of a bus system, i.e. the way the CPU talks to the other stuff | 
|  | inside your box.  Other bus systems are PCI, EISA, MicroChannel | 
|  | (MCA) or VESA.  ISA is an older system, now being displaced by PCI; | 
|  | newer boards don't support it.  If you have ISA, say Y, otherwise N. | 
|  |  | 
|  | # Select ISA DMA controller support | 
|  | config ISA_DMA | 
|  | bool | 
|  | select ISA_DMA_API | 
|  |  | 
|  | # Select ISA DMA interface | 
|  | config ISA_DMA_API | 
|  | bool | 
|  |  | 
|  | config PCI | 
|  | bool "PCI support" if MIGHT_HAVE_PCI | 
|  | help | 
|  | Find out whether you have a PCI motherboard. PCI is the name of a | 
|  | bus system, i.e. the way the CPU talks to the other stuff inside | 
|  | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | 
|  | VESA. If you have PCI, say Y, otherwise N. | 
|  |  | 
|  | config PCI_DOMAINS | 
|  | bool | 
|  | depends on PCI | 
|  |  | 
|  | config PCI_NANOENGINE | 
|  | bool "BSE nanoEngine PCI support" | 
|  | depends on SA1100_NANOENGINE | 
|  | help | 
|  | Enable PCI on the BSE nanoEngine board. | 
|  |  | 
|  | config PCI_SYSCALL | 
|  | def_bool PCI | 
|  |  | 
|  | # Select the host bridge type | 
|  | config PCI_HOST_VIA82C505 | 
|  | bool | 
|  | depends on PCI && ARCH_SHARK | 
|  | default y | 
|  |  | 
|  | config PCI_HOST_ITE8152 | 
|  | bool | 
|  | depends on PCI && MACH_ARMCORE | 
|  | default y | 
|  | select DMABOUNCE | 
|  |  | 
|  | source "drivers/pci/Kconfig" | 
|  |  | 
|  | source "drivers/pcmcia/Kconfig" | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | menu "Kernel Features" | 
|  |  | 
|  | config HAVE_SMP | 
|  | bool | 
|  | help | 
|  | This option should be selected by machines which have an SMP- | 
|  | capable CPU. | 
|  |  | 
|  | The only effect of this option is to make the SMP-related | 
|  | options available to the user for configuration. | 
|  |  | 
|  | config SMP | 
|  | bool "Symmetric Multi-Processing" | 
|  | depends on CPU_V6K || CPU_V7 | 
|  | depends on GENERIC_CLOCKEVENTS | 
|  | depends on HAVE_SMP | 
|  | depends on MMU | 
|  | select USE_GENERIC_SMP_HELPERS | 
|  | select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP | 
|  | help | 
|  | This enables support for systems with more than one CPU. If you have | 
|  | a system with only one CPU, like most personal computers, say N. If | 
|  | you have a system with more than one CPU, say Y. | 
|  |  | 
|  | If you say N here, the kernel will run on single and multiprocessor | 
|  | machines, but will use only one CPU of a multiprocessor machine. If | 
|  | you say Y here, the kernel will run on many, but not all, single | 
|  | processor machines. On a single processor machine, the kernel will | 
|  | run faster if you say N here. | 
|  |  | 
|  | See also <file:Documentation/x86/i386/IO-APIC.txt>, | 
|  | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at | 
|  | <http://tldp.org/HOWTO/SMP-HOWTO.html>. | 
|  |  | 
|  | If you don't know what to do here, say N. | 
|  |  | 
|  | config SMP_ON_UP | 
|  | bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)" | 
|  | depends on EXPERIMENTAL | 
|  | depends on SMP && !XIP_KERNEL | 
|  | default y | 
|  | help | 
|  | SMP kernels contain instructions which fail on non-SMP processors. | 
|  | Enabling this option allows the kernel to modify itself to make | 
|  | these instructions safe.  Disabling it allows about 1K of space | 
|  | savings. | 
|  |  | 
|  | If you don't know what to do here, say Y. | 
|  |  | 
|  | config ARM_CPU_TOPOLOGY | 
|  | bool "Support cpu topology definition" | 
|  | depends on SMP && CPU_V7 | 
|  | default y | 
|  | help | 
|  | Support ARM cpu topology definition. The MPIDR register defines | 
|  | affinity between processors which is then used to describe the cpu | 
|  | topology of an ARM System. | 
|  |  | 
|  | config SCHED_MC | 
|  | bool "Multi-core scheduler support" | 
|  | depends on ARM_CPU_TOPOLOGY | 
|  | help | 
|  | Multi-core scheduler support improves the CPU scheduler's decision | 
|  | making when dealing with multi-core CPU chips at a cost of slightly | 
|  | increased overhead in some places. If unsure say N here. | 
|  |  | 
|  | config SCHED_SMT | 
|  | bool "SMT scheduler support" | 
|  | depends on ARM_CPU_TOPOLOGY | 
|  | help | 
|  | Improves the CPU scheduler's decision making when dealing with | 
|  | MultiThreading at a cost of slightly increased overhead in some | 
|  | places. If unsure say N here. | 
|  |  | 
|  | config HAVE_ARM_SCU | 
|  | bool | 
|  | help | 
|  | This option enables support for the ARM system coherency unit | 
|  |  | 
|  | config ARM_ARCH_TIMER | 
|  | bool "Architected timer support" | 
|  | depends on CPU_V7 | 
|  | help | 
|  | This option enables support for the ARM architected timer | 
|  |  | 
|  | config HAVE_ARM_TWD | 
|  | bool | 
|  | depends on SMP | 
|  | help | 
|  | This options enables support for the ARM timer and watchdog unit | 
|  |  | 
|  | choice | 
|  | prompt "Memory split" | 
|  | default VMSPLIT_3G | 
|  | help | 
|  | Select the desired split between kernel and user memory. | 
|  |  | 
|  | If you are not absolutely sure what you are doing, leave this | 
|  | option alone! | 
|  |  | 
|  | config VMSPLIT_3G | 
|  | bool "3G/1G user/kernel split" | 
|  | config VMSPLIT_2G | 
|  | bool "2G/2G user/kernel split" | 
|  | config VMSPLIT_1G | 
|  | bool "1G/3G user/kernel split" | 
|  | endchoice | 
|  |  | 
|  | config PAGE_OFFSET | 
|  | hex | 
|  | default 0x40000000 if VMSPLIT_1G | 
|  | default 0x80000000 if VMSPLIT_2G | 
|  | default 0xC0000000 | 
|  |  | 
|  | config NR_CPUS | 
|  | int "Maximum number of CPUs (2-32)" | 
|  | range 2 32 | 
|  | depends on SMP | 
|  | default "4" | 
|  |  | 
|  | config HOTPLUG_CPU | 
|  | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | 
|  | depends on SMP && HOTPLUG && EXPERIMENTAL | 
|  | help | 
|  | Say Y here to experiment with turning CPUs off and on.  CPUs | 
|  | can be controlled through /sys/devices/system/cpu. | 
|  |  | 
|  | config LOCAL_TIMERS | 
|  | bool "Use local timer interrupts" | 
|  | depends on SMP | 
|  | default y | 
|  | select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT) | 
|  | help | 
|  | Enable support for local timers on SMP platforms, rather then the | 
|  | legacy IPI broadcast method.  Local timers allows the system | 
|  | accounting to be spread across the timer interval, preventing a | 
|  | "thundering herd" at every timer tick. | 
|  |  | 
|  | config ARCH_NR_GPIO | 
|  | int | 
|  | default 1024 if ARCH_SHMOBILE || ARCH_TEGRA | 
|  | default 355 if ARCH_U8500 | 
|  | default 264 if MACH_H4700 | 
|  | default 0 | 
|  | help | 
|  | Maximum number of GPIOs in the system. | 
|  |  | 
|  | If unsure, leave the default value. | 
|  |  | 
|  | source kernel/Kconfig.preempt | 
|  |  | 
|  | config HZ | 
|  | int | 
|  | default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \ | 
|  | ARCH_S5PV210 || ARCH_EXYNOS4 | 
|  | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER | 
|  | default AT91_TIMER_HZ if ARCH_AT91 | 
|  | default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE | 
|  | default 100 | 
|  |  | 
|  | config THUMB2_KERNEL | 
|  | bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)" | 
|  | depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL | 
|  | select AEABI | 
|  | select ARM_ASM_UNIFIED | 
|  | select ARM_UNWIND | 
|  | help | 
|  | By enabling this option, the kernel will be compiled in | 
|  | Thumb-2 mode. A compiler/assembler that understand the unified | 
|  | ARM-Thumb syntax is needed. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config THUMB2_AVOID_R_ARM_THM_JUMP11 | 
|  | bool "Work around buggy Thumb-2 short branch relocations in gas" | 
|  | depends on THUMB2_KERNEL && MODULES | 
|  | default y | 
|  | help | 
|  | Various binutils versions can resolve Thumb-2 branches to | 
|  | locally-defined, preemptible global symbols as short-range "b.n" | 
|  | branch instructions. | 
|  |  | 
|  | This is a problem, because there's no guarantee the final | 
|  | destination of the symbol, or any candidate locations for a | 
|  | trampoline, are within range of the branch.  For this reason, the | 
|  | kernel does not support fixing up the R_ARM_THM_JUMP11 (102) | 
|  | relocation in modules at all, and it makes little sense to add | 
|  | support. | 
|  |  | 
|  | The symptom is that the kernel fails with an "unsupported | 
|  | relocation" error when loading some modules. | 
|  |  | 
|  | Until fixed tools are available, passing | 
|  | -fno-optimize-sibling-calls to gcc should prevent gcc generating | 
|  | code which hits this problem, at the cost of a bit of extra runtime | 
|  | stack usage in some cases. | 
|  |  | 
|  | The problem is described in more detail at: | 
|  | https://bugs.launchpad.net/binutils-linaro/+bug/725126 | 
|  |  | 
|  | Only Thumb-2 kernels are affected. | 
|  |  | 
|  | Unless you are sure your tools don't have this problem, say Y. | 
|  |  | 
|  | config ARM_ASM_UNIFIED | 
|  | bool | 
|  |  | 
|  | config AEABI | 
|  | bool "Use the ARM EABI to compile the kernel" | 
|  | help | 
|  | This option allows for the kernel to be compiled using the latest | 
|  | ARM ABI (aka EABI).  This is only useful if you are using a user | 
|  | space environment that is also compiled with EABI. | 
|  |  | 
|  | Since there are major incompatibilities between the legacy ABI and | 
|  | EABI, especially with regard to structure member alignment, this | 
|  | option also changes the kernel syscall calling convention to | 
|  | disambiguate both ABIs and allow for backward compatibility support | 
|  | (selected with CONFIG_OABI_COMPAT). | 
|  |  | 
|  | To use this you need GCC version 4.0.0 or later. | 
|  |  | 
|  | config OABI_COMPAT | 
|  | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" | 
|  | depends on AEABI && EXPERIMENTAL && !THUMB2_KERNEL | 
|  | default y | 
|  | help | 
|  | This option preserves the old syscall interface along with the | 
|  | new (ARM EABI) one. It also provides a compatibility layer to | 
|  | intercept syscalls that have structure arguments which layout | 
|  | in memory differs between the legacy ABI and the new ARM EABI | 
|  | (only for non "thumb" binaries). This option adds a tiny | 
|  | overhead to all syscalls and produces a slightly larger kernel. | 
|  | If you know you'll be using only pure EABI user space then you | 
|  | can say N here. If this option is not selected and you attempt | 
|  | to execute a legacy ABI binary then the result will be | 
|  | UNPREDICTABLE (in fact it can be predicted that it won't work | 
|  | at all). If in doubt say Y. | 
|  |  | 
|  | config ARCH_HAS_HOLES_MEMORYMODEL | 
|  | bool | 
|  |  | 
|  | config ARCH_SPARSEMEM_ENABLE | 
|  | bool | 
|  |  | 
|  | config ARCH_SPARSEMEM_DEFAULT | 
|  | def_bool ARCH_SPARSEMEM_ENABLE | 
|  |  | 
|  | config ARCH_SELECT_MEMORY_MODEL | 
|  | def_bool ARCH_SPARSEMEM_ENABLE | 
|  |  | 
|  | config HAVE_ARCH_PFN_VALID | 
|  | def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM | 
|  |  | 
|  | config HIGHMEM | 
|  | bool "High Memory Support" | 
|  | depends on MMU | 
|  | help | 
|  | The address space of ARM processors is only 4 Gigabytes large | 
|  | and it has to accommodate user address space, kernel address | 
|  | space as well as some memory mapped IO. That means that, if you | 
|  | have a large amount of physical memory and/or IO, not all of the | 
|  | memory can be "permanently mapped" by the kernel. The physical | 
|  | memory that is not permanently mapped is called "high memory". | 
|  |  | 
|  | Depending on the selected kernel/user memory split, minimum | 
|  | vmalloc space and actual amount of RAM, you may not need this | 
|  | option which should result in a slightly faster kernel. | 
|  |  | 
|  | If unsure, say n. | 
|  |  | 
|  | config HIGHPTE | 
|  | bool "Allocate 2nd-level pagetables from highmem" | 
|  | depends on HIGHMEM | 
|  |  | 
|  | config HW_PERF_EVENTS | 
|  | bool "Enable hardware performance counter support for perf events" | 
|  | depends on PERF_EVENTS && CPU_HAS_PMU | 
|  | default y | 
|  | help | 
|  | Enable hardware performance counter support for perf events. If | 
|  | disabled, perf events will use software events only. | 
|  |  | 
|  | source "mm/Kconfig" | 
|  |  | 
|  | config FORCE_MAX_ZONEORDER | 
|  | int "Maximum zone order" if ARCH_SHMOBILE | 
|  | range 11 64 if ARCH_SHMOBILE | 
|  | default "9" if SA1111 | 
|  | default "11" | 
|  | help | 
|  | The kernel memory allocator divides physically contiguous memory | 
|  | blocks into "zones", where each zone is a power of two number of | 
|  | pages.  This option selects the largest power of two that the kernel | 
|  | keeps in the memory allocator.  If you need to allocate very large | 
|  | blocks of physically contiguous memory, then you may need to | 
|  | increase this value. | 
|  |  | 
|  | This config option is actually maximum order plus one. For example, | 
|  | a value of 11 means that the largest free memory block is 2^10 pages. | 
|  |  | 
|  | config LEDS | 
|  | bool "Timer and CPU usage LEDs" | 
|  | depends on ARCH_CDB89712 || ARCH_EBSA110 || \ | 
|  | ARCH_EBSA285 || ARCH_INTEGRATOR || \ | 
|  | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | 
|  | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | 
|  | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ | 
|  | ARCH_AT91 || ARCH_DAVINCI || \ | 
|  | ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW | 
|  | help | 
|  | If you say Y here, the LEDs on your machine will be used | 
|  | to provide useful information about your current system status. | 
|  |  | 
|  | If you are compiling a kernel for a NetWinder or EBSA-285, you will | 
|  | be able to select which LEDs are active using the options below. If | 
|  | you are compiling a kernel for the EBSA-110 or the LART however, the | 
|  | red LED will simply flash regularly to indicate that the system is | 
|  | still functional. It is safe to say Y here if you have a CATS | 
|  | system, but the driver will do nothing. | 
|  |  | 
|  | config LEDS_TIMER | 
|  | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | 
|  | OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ | 
|  | || MACH_OMAP_PERSEUS2 | 
|  | depends on LEDS | 
|  | depends on !GENERIC_CLOCKEVENTS | 
|  | default y if ARCH_EBSA110 | 
|  | help | 
|  | If you say Y here, one of the system LEDs (the green one on the | 
|  | NetWinder, the amber one on the EBSA285, or the red one on the LART) | 
|  | will flash regularly to indicate that the system is still | 
|  | operational. This is mainly useful to kernel hackers who are | 
|  | debugging unstable kernels. | 
|  |  | 
|  | The LART uses the same LED for both Timer LED and CPU usage LED | 
|  | functions. You may choose to use both, but the Timer LED function | 
|  | will overrule the CPU usage LED. | 
|  |  | 
|  | config LEDS_CPU | 
|  | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | 
|  | !ARCH_OMAP) \ | 
|  | || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ | 
|  | || MACH_OMAP_PERSEUS2 | 
|  | depends on LEDS | 
|  | help | 
|  | If you say Y here, the red LED will be used to give a good real | 
|  | time indication of CPU usage, by lighting whenever the idle task | 
|  | is not currently executing. | 
|  |  | 
|  | The LART uses the same LED for both Timer LED and CPU usage LED | 
|  | functions. You may choose to use both, but the Timer LED function | 
|  | will overrule the CPU usage LED. | 
|  |  | 
|  | config ALIGNMENT_TRAP | 
|  | bool | 
|  | depends on CPU_CP15_MMU | 
|  | default y if !ARCH_EBSA110 | 
|  | select HAVE_PROC_CPU if PROC_FS | 
|  | help | 
|  | ARM processors cannot fetch/store information which is not | 
|  | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | 
|  | address divisible by 4. On 32-bit ARM processors, these non-aligned | 
|  | fetch/store instructions will be emulated in software if you say | 
|  | here, which has a severe performance impact. This is necessary for | 
|  | correct operation of some network protocols. With an IP-only | 
|  | configuration it is safe to say N, otherwise say Y. | 
|  |  | 
|  | config UACCESS_WITH_MEMCPY | 
|  | bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" | 
|  | depends on MMU && EXPERIMENTAL | 
|  | default y if CPU_FEROCEON | 
|  | help | 
|  | Implement faster copy_to_user and clear_user methods for CPU | 
|  | cores where a 8-word STM instruction give significantly higher | 
|  | memory write throughput than a sequence of individual 32bit stores. | 
|  |  | 
|  | A possible side effect is a slight increase in scheduling latency | 
|  | between threads sharing the same address space if they invoke | 
|  | such copy operations with large buffers. | 
|  |  | 
|  | However, if the CPU data cache is using a write-allocate mode, | 
|  | this option is unlikely to provide any performance gain. | 
|  |  | 
|  | config SECCOMP | 
|  | bool | 
|  | prompt "Enable seccomp to safely compute untrusted bytecode" | 
|  | ---help--- | 
|  | This kernel feature is useful for number crunching applications | 
|  | that may need to compute untrusted bytecode during their | 
|  | execution. By using pipes or other transports made available to | 
|  | the process as file descriptors supporting the read/write | 
|  | syscalls, it's possible to isolate those applications in | 
|  | their own address space using seccomp. Once seccomp is | 
|  | enabled via prctl(PR_SET_SECCOMP), it cannot be disabled | 
|  | and the task is only allowed to execute a few safe syscalls | 
|  | defined by each seccomp mode. | 
|  |  | 
|  | config CC_STACKPROTECTOR | 
|  | bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)" | 
|  | depends on EXPERIMENTAL | 
|  | help | 
|  | This option turns on the -fstack-protector GCC feature. This | 
|  | feature puts, at the beginning of functions, a canary value on | 
|  | the stack just before the return address, and validates | 
|  | the value just before actually returning.  Stack based buffer | 
|  | overflows (that need to overwrite this return address) now also | 
|  | overwrite the canary, which gets detected and the attack is then | 
|  | neutralized via a kernel panic. | 
|  | This feature requires gcc version 4.2 or above. | 
|  |  | 
|  | config DEPRECATED_PARAM_STRUCT | 
|  | bool "Provide old way to pass kernel parameters" | 
|  | help | 
|  | This was deprecated in 2001 and announced to live on for 5 years. | 
|  | Some old boot loaders still use this way. | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | menu "Boot options" | 
|  |  | 
|  | config USE_OF | 
|  | bool "Flattened Device Tree support" | 
|  | select OF | 
|  | select OF_EARLY_FLATTREE | 
|  | select IRQ_DOMAIN | 
|  | help | 
|  | Include support for flattened device tree machine descriptions. | 
|  |  | 
|  | # Compressed boot loader in ROM.  Yes, we really want to ask about | 
|  | # TEXT and BSS so we preserve their values in the config files. | 
|  | config ZBOOT_ROM_TEXT | 
|  | hex "Compressed ROM boot loader base address" | 
|  | default "0" | 
|  | help | 
|  | The physical address at which the ROM-able zImage is to be | 
|  | placed in the target.  Platforms which normally make use of | 
|  | ROM-able zImage formats normally set this to a suitable | 
|  | value in their defconfig file. | 
|  |  | 
|  | If ZBOOT_ROM is not enabled, this has no effect. | 
|  |  | 
|  | config ZBOOT_ROM_BSS | 
|  | hex "Compressed ROM boot loader BSS address" | 
|  | default "0" | 
|  | help | 
|  | The base address of an area of read/write memory in the target | 
|  | for the ROM-able zImage which must be available while the | 
|  | decompressor is running. It must be large enough to hold the | 
|  | entire decompressed kernel plus an additional 128 KiB. | 
|  | Platforms which normally make use of ROM-able zImage formats | 
|  | normally set this to a suitable value in their defconfig file. | 
|  |  | 
|  | If ZBOOT_ROM is not enabled, this has no effect. | 
|  |  | 
|  | config ZBOOT_ROM | 
|  | bool "Compressed boot loader in ROM/flash" | 
|  | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | 
|  | help | 
|  | Say Y here if you intend to execute your compressed kernel image | 
|  | (zImage) directly from ROM or flash.  If unsure, say N. | 
|  |  | 
|  | choice | 
|  | prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)" | 
|  | depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL | 
|  | default ZBOOT_ROM_NONE | 
|  | help | 
|  | Include experimental SD/MMC loading code in the ROM-able zImage. | 
|  | With this enabled it is possible to write the ROM-able zImage | 
|  | kernel image to an MMC or SD card and boot the kernel straight | 
|  | from the reset vector. At reset the processor Mask ROM will load | 
|  | the first part of the ROM-able zImage which in turn loads the | 
|  | rest the kernel image to RAM. | 
|  |  | 
|  | config ZBOOT_ROM_NONE | 
|  | bool "No SD/MMC loader in zImage (EXPERIMENTAL)" | 
|  | help | 
|  | Do not load image from SD or MMC | 
|  |  | 
|  | config ZBOOT_ROM_MMCIF | 
|  | bool "Include MMCIF loader in zImage (EXPERIMENTAL)" | 
|  | help | 
|  | Load image from MMCIF hardware block. | 
|  |  | 
|  | config ZBOOT_ROM_SH_MOBILE_SDHI | 
|  | bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)" | 
|  | help | 
|  | Load image from SDHI hardware block | 
|  |  | 
|  | endchoice | 
|  |  | 
|  | config ARM_APPENDED_DTB | 
|  | bool "Use appended device tree blob to zImage (EXPERIMENTAL)" | 
|  | depends on OF && !ZBOOT_ROM && EXPERIMENTAL | 
|  | help | 
|  | With this option, the boot code will look for a device tree binary | 
|  | (DTB) appended to zImage | 
|  | (e.g. cat zImage <filename>.dtb > zImage_w_dtb). | 
|  |  | 
|  | This is meant as a backward compatibility convenience for those | 
|  | systems with a bootloader that can't be upgraded to accommodate | 
|  | the documented boot protocol using a device tree. | 
|  |  | 
|  | Beware that there is very little in terms of protection against | 
|  | this option being confused by leftover garbage in memory that might | 
|  | look like a DTB header after a reboot if no actual DTB is appended | 
|  | to zImage.  Do not leave this option active in a production kernel | 
|  | if you don't intend to always append a DTB.  Proper passing of the | 
|  | location into r2 of a bootloader provided DTB is always preferable | 
|  | to this option. | 
|  |  | 
|  | config ARM_ATAG_DTB_COMPAT | 
|  | bool "Supplement the appended DTB with traditional ATAG information" | 
|  | depends on ARM_APPENDED_DTB | 
|  | help | 
|  | Some old bootloaders can't be updated to a DTB capable one, yet | 
|  | they provide ATAGs with memory configuration, the ramdisk address, | 
|  | the kernel cmdline string, etc.  Such information is dynamically | 
|  | provided by the bootloader and can't always be stored in a static | 
|  | DTB.  To allow a device tree enabled kernel to be used with such | 
|  | bootloaders, this option allows zImage to extract the information | 
|  | from the ATAG list and store it at run time into the appended DTB. | 
|  |  | 
|  | config CMDLINE | 
|  | string "Default kernel command string" | 
|  | default "" | 
|  | help | 
|  | On some architectures (EBSA110 and CATS), there is currently no way | 
|  | for the boot loader to pass arguments to the kernel. For these | 
|  | architectures, you should supply some command-line options at build | 
|  | time by entering them here. As a minimum, you should specify the | 
|  | memory size and the root device (e.g., mem=64M root=/dev/nfs). | 
|  |  | 
|  | choice | 
|  | prompt "Kernel command line type" if CMDLINE != "" | 
|  | default CMDLINE_FROM_BOOTLOADER | 
|  |  | 
|  | config CMDLINE_FROM_BOOTLOADER | 
|  | bool "Use bootloader kernel arguments if available" | 
|  | help | 
|  | Uses the command-line options passed by the boot loader. If | 
|  | the boot loader doesn't provide any, the default kernel command | 
|  | string provided in CMDLINE will be used. | 
|  |  | 
|  | config CMDLINE_EXTEND | 
|  | bool "Extend bootloader kernel arguments" | 
|  | help | 
|  | The command-line arguments provided by the boot loader will be | 
|  | appended to the default kernel command string. | 
|  |  | 
|  | config CMDLINE_FORCE | 
|  | bool "Always use the default kernel command string" | 
|  | help | 
|  | Always use the default kernel command string, even if the boot | 
|  | loader passes other arguments to the kernel. | 
|  | This is useful if you cannot or don't want to change the | 
|  | command-line options your boot loader passes to the kernel. | 
|  | endchoice | 
|  |  | 
|  | config XIP_KERNEL | 
|  | bool "Kernel Execute-In-Place from ROM" | 
|  | depends on !ZBOOT_ROM && !ARM_LPAE | 
|  | help | 
|  | Execute-In-Place allows the kernel to run from non-volatile storage | 
|  | directly addressable by the CPU, such as NOR flash. This saves RAM | 
|  | space since the text section of the kernel is not loaded from flash | 
|  | to RAM.  Read-write sections, such as the data section and stack, | 
|  | are still copied to RAM.  The XIP kernel is not compressed since | 
|  | it has to run directly from flash, so it will take more space to | 
|  | store it.  The flash address used to link the kernel object files, | 
|  | and for storing it, is configuration dependent. Therefore, if you | 
|  | say Y here, you must know the proper physical address where to | 
|  | store the kernel image depending on your own flash memory usage. | 
|  |  | 
|  | Also note that the make target becomes "make xipImage" rather than | 
|  | "make zImage" or "make Image".  The final kernel binary to put in | 
|  | ROM memory will be arch/arm/boot/xipImage. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config XIP_PHYS_ADDR | 
|  | hex "XIP Kernel Physical Location" | 
|  | depends on XIP_KERNEL | 
|  | default "0x00080000" | 
|  | help | 
|  | This is the physical address in your flash memory the kernel will | 
|  | be linked for and stored to.  This address is dependent on your | 
|  | own flash usage. | 
|  |  | 
|  | config KEXEC | 
|  | bool "Kexec system call (EXPERIMENTAL)" | 
|  | depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU) | 
|  | help | 
|  | kexec is a system call that implements the ability to shutdown your | 
|  | current kernel, and to start another kernel.  It is like a reboot | 
|  | but it is independent of the system firmware.   And like a reboot | 
|  | you can start any kernel with it, not just Linux. | 
|  |  | 
|  | It is an ongoing process to be certain the hardware in a machine | 
|  | is properly shutdown, so do not be surprised if this code does not | 
|  | initially work for you.  It may help to enable device hotplugging | 
|  | support. | 
|  |  | 
|  | config ATAGS_PROC | 
|  | bool "Export atags in procfs" | 
|  | depends on KEXEC | 
|  | default y | 
|  | help | 
|  | Should the atags used to boot the kernel be exported in an "atags" | 
|  | file in procfs. Useful with kexec. | 
|  |  | 
|  | config CRASH_DUMP | 
|  | bool "Build kdump crash kernel (EXPERIMENTAL)" | 
|  | depends on EXPERIMENTAL | 
|  | help | 
|  | Generate crash dump after being started by kexec. This should | 
|  | be normally only set in special crash dump kernels which are | 
|  | loaded in the main kernel with kexec-tools into a specially | 
|  | reserved region and then later executed after a crash by | 
|  | kdump/kexec. The crash dump kernel must be compiled to a | 
|  | memory address not used by the main kernel | 
|  |  | 
|  | For more details see Documentation/kdump/kdump.txt | 
|  |  | 
|  | config AUTO_ZRELADDR | 
|  | bool "Auto calculation of the decompressed kernel image address" | 
|  | depends on !ZBOOT_ROM && !ARCH_U300 | 
|  | help | 
|  | ZRELADDR is the physical address where the decompressed kernel | 
|  | image will be placed. If AUTO_ZRELADDR is selected, the address | 
|  | will be determined at run-time by masking the current IP with | 
|  | 0xf8000000. This assumes the zImage being placed in the first 128MB | 
|  | from start of memory. | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | menu "CPU Power Management" | 
|  |  | 
|  | if ARCH_HAS_CPUFREQ | 
|  |  | 
|  | source "drivers/cpufreq/Kconfig" | 
|  |  | 
|  | config CPU_FREQ_IMX | 
|  | tristate "CPUfreq driver for i.MX CPUs" | 
|  | depends on ARCH_MXC && CPU_FREQ | 
|  | help | 
|  | This enables the CPUfreq driver for i.MX CPUs. | 
|  |  | 
|  | config CPU_FREQ_SA1100 | 
|  | bool | 
|  |  | 
|  | config CPU_FREQ_SA1110 | 
|  | bool | 
|  |  | 
|  | config CPU_FREQ_INTEGRATOR | 
|  | tristate "CPUfreq driver for ARM Integrator CPUs" | 
|  | depends on ARCH_INTEGRATOR && CPU_FREQ | 
|  | default y | 
|  | help | 
|  | This enables the CPUfreq driver for ARM Integrator CPUs. | 
|  |  | 
|  | For details, take a look at <file:Documentation/cpu-freq>. | 
|  |  | 
|  | If in doubt, say Y. | 
|  |  | 
|  | config CPU_FREQ_PXA | 
|  | bool | 
|  | depends on CPU_FREQ && ARCH_PXA && PXA25x | 
|  | default y | 
|  | select CPU_FREQ_TABLE | 
|  | select CPU_FREQ_DEFAULT_GOV_USERSPACE | 
|  |  | 
|  | config CPU_FREQ_S3C | 
|  | bool | 
|  | help | 
|  | Internal configuration node for common cpufreq on Samsung SoC | 
|  |  | 
|  | config CPU_FREQ_S3C24XX | 
|  | bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)" | 
|  | depends on ARCH_S3C24XX && CPU_FREQ && EXPERIMENTAL | 
|  | select CPU_FREQ_S3C | 
|  | help | 
|  | This enables the CPUfreq driver for the Samsung S3C24XX family | 
|  | of CPUs. | 
|  |  | 
|  | For details, take a look at <file:Documentation/cpu-freq>. | 
|  |  | 
|  | If in doubt, say N. | 
|  |  | 
|  | config CPU_FREQ_S3C24XX_PLL | 
|  | bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)" | 
|  | depends on CPU_FREQ_S3C24XX && EXPERIMENTAL | 
|  | help | 
|  | Compile in support for changing the PLL frequency from the | 
|  | S3C24XX series CPUfreq driver. The PLL takes time to settle | 
|  | after a frequency change, so by default it is not enabled. | 
|  |  | 
|  | This also means that the PLL tables for the selected CPU(s) will | 
|  | be built which may increase the size of the kernel image. | 
|  |  | 
|  | config CPU_FREQ_S3C24XX_DEBUG | 
|  | bool "Debug CPUfreq Samsung driver core" | 
|  | depends on CPU_FREQ_S3C24XX | 
|  | help | 
|  | Enable s3c_freq_dbg for the Samsung S3C CPUfreq core | 
|  |  | 
|  | config CPU_FREQ_S3C24XX_IODEBUG | 
|  | bool "Debug CPUfreq Samsung driver IO timing" | 
|  | depends on CPU_FREQ_S3C24XX | 
|  | help | 
|  | Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core | 
|  |  | 
|  | config CPU_FREQ_S3C24XX_DEBUGFS | 
|  | bool "Export debugfs for CPUFreq" | 
|  | depends on CPU_FREQ_S3C24XX && DEBUG_FS | 
|  | help | 
|  | Export status information via debugfs. | 
|  |  | 
|  | endif | 
|  |  | 
|  | source "drivers/cpuidle/Kconfig" | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | menu "Floating point emulation" | 
|  |  | 
|  | comment "At least one emulation must be selected" | 
|  |  | 
|  | config FPE_NWFPE | 
|  | bool "NWFPE math emulation" | 
|  | depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL | 
|  | ---help--- | 
|  | Say Y to include the NWFPE floating point emulator in the kernel. | 
|  | This is necessary to run most binaries. Linux does not currently | 
|  | support floating point hardware so you need to say Y here even if | 
|  | your machine has an FPA or floating point co-processor podule. | 
|  |  | 
|  | You may say N here if you are going to load the Acorn FPEmulator | 
|  | early in the bootup. | 
|  |  | 
|  | config FPE_NWFPE_XP | 
|  | bool "Support extended precision" | 
|  | depends on FPE_NWFPE | 
|  | help | 
|  | Say Y to include 80-bit support in the kernel floating-point | 
|  | emulator.  Otherwise, only 32 and 64-bit support is compiled in. | 
|  | Note that gcc does not generate 80-bit operations by default, | 
|  | so in most cases this option only enlarges the size of the | 
|  | floating point emulator without any good reason. | 
|  |  | 
|  | You almost surely want to say N here. | 
|  |  | 
|  | config FPE_FASTFPE | 
|  | bool "FastFPE math emulation (EXPERIMENTAL)" | 
|  | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL | 
|  | ---help--- | 
|  | Say Y here to include the FAST floating point emulator in the kernel. | 
|  | This is an experimental much faster emulator which now also has full | 
|  | precision for the mantissa.  It does not support any exceptions. | 
|  | It is very simple, and approximately 3-6 times faster than NWFPE. | 
|  |  | 
|  | It should be sufficient for most programs.  It may be not suitable | 
|  | for scientific calculations, but you have to check this for yourself. | 
|  | If you do not feel you need a faster FP emulation you should better | 
|  | choose NWFPE. | 
|  |  | 
|  | config VFP | 
|  | bool "VFP-format floating point maths" | 
|  | depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON | 
|  | help | 
|  | Say Y to include VFP support code in the kernel. This is needed | 
|  | if your hardware includes a VFP unit. | 
|  |  | 
|  | Please see <file:Documentation/arm/VFP/release-notes.txt> for | 
|  | release notes and additional status information. | 
|  |  | 
|  | Say N if your target does not have VFP hardware. | 
|  |  | 
|  | config VFPv3 | 
|  | bool | 
|  | depends on VFP | 
|  | default y if CPU_V7 | 
|  |  | 
|  | config NEON | 
|  | bool "Advanced SIMD (NEON) Extension support" | 
|  | depends on VFPv3 && CPU_V7 | 
|  | help | 
|  | Say Y to include support code for NEON, the ARMv7 Advanced SIMD | 
|  | Extension. | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | menu "Userspace binary formats" | 
|  |  | 
|  | source "fs/Kconfig.binfmt" | 
|  |  | 
|  | config ARTHUR | 
|  | tristate "RISC OS personality" | 
|  | depends on !AEABI | 
|  | help | 
|  | Say Y here to include the kernel code necessary if you want to run | 
|  | Acorn RISC OS/Arthur binaries under Linux. This code is still very | 
|  | experimental; if this sounds frightening, say N and sleep in peace. | 
|  | You can also say M here to compile this support as a module (which | 
|  | will be called arthur). | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | menu "Power management options" | 
|  |  | 
|  | source "kernel/power/Kconfig" | 
|  |  | 
|  | config ARCH_SUSPEND_POSSIBLE | 
|  | depends on !ARCH_S5PC100 && !ARCH_TEGRA | 
|  | depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \ | 
|  | CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK | 
|  | def_bool y | 
|  |  | 
|  | config ARM_CPU_SUSPEND | 
|  | def_bool PM_SLEEP | 
|  |  | 
|  | endmenu | 
|  |  | 
|  | source "net/Kconfig" | 
|  |  | 
|  | source "drivers/Kconfig" | 
|  |  | 
|  | source "fs/Kconfig" | 
|  |  | 
|  | source "arch/arm/Kconfig.debug" | 
|  |  | 
|  | source "security/Kconfig" | 
|  |  | 
|  | source "crypto/Kconfig" | 
|  |  | 
|  | source "lib/Kconfig" |