Merge remote-tracking branch 'remotes/aosp/android-3.0' into develop-3.0

[firefly-linux-kernel-4.4.55.git] / arch / arm / Kconfig

config ARM
        bool
        default y
        select HAVE_AOUT
        select HAVE_DMA_API_DEBUG
        select HAVE_IDE
        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_KGDB
        select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_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 HAVE_GENERIC_DMA_COHERENT
        select HAVE_KERNEL_GZIP
        select HAVE_KERNEL_LZO
        select HAVE_KERNEL_LZMA
        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 HAVE_SPARSE_IRQ
        select GENERIC_IRQ_SHOW
        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 HAVE_PWM
        bool

config MIGHT_HAVE_PCI
        bool

config SYS_SUPPORTS_APM_EMULATION
        bool

config HAVE_SCHED_CLOCK
        bool

config GENERIC_GPIO
        bool

config ARCH_USES_GETTIMEOFFSET
        bool
        default n

config GENERIC_CLOCKEVENTS
        bool

config GENERIC_CLOCKEVENTS_BROADCAST
        bool
        depends on GENERIC_CLOCKEVENTS
        default y if SMP

config KTIME_SCALAR
        bool
        default y

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 MCA
        bool
        help
          MicroChannel Architecture is found in some IBM PS/2 machines and
          laptops.  It is a bus system similar to PCI or ISA. See
          <file:Documentation/mca.txt> (and especially the web page given
          there) before attempting to build an MCA bus kernel.

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 HARDIRQS_SW_RESEND
        bool
        default y

config GENERIC_IRQ_PROBE
        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 ARCH_HAS_CPU_IDLE_WAIT
       def_bool y

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 GENERIC_ISA_DMA
        bool

config FIQ
        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 (EXPERIMENTAL)"
        depends on EXPERIMENTAL
        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, or theoretically 64K
          for the MSM machine class.

config ARM_PATCH_PHYS_VIRT_16BIT
        def_bool y
        depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
        help
          This option extends the physical to virtual translation patching
          to allow physical memory down to a theoretical minimum of 64K
          boundaries.

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 ICST
        select GENERIC_CLOCKEVENTS
        select PLAT_VERSATILE
        select PLAT_VERSATILE_FPGA_IRQ
        help
          Support for ARM's Integrator platform.

config ARCH_REALVIEW
        bool "ARM Ltd. RealView family"
        select ARM_AMBA
        select CLKDEV_LOOKUP
        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
        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 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 GENERIC_CLOCKEVENTS
        select HAVE_CLK
        select HAVE_PATA_PLATFORM
        select ICST
        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 ARM_PATCH_PHYS_VIRT if MMU
        help
          This enables support for systems based on the Atmel AT91RM9200,
          AT91SAM9 and AT91CAP9 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_CLPS711X
        bool "Cirrus Logic CLPS711x/EP721x-based"
        select CPU_ARM720T
        select ARCH_USES_GETTIMEOFFSET
        help
          Support for Cirrus Logic 711x/721x based boards.

config ARCH_CNS3XXX
        bool "Cavium Networks CNS3XXX family"
        select CPU_V6
        select GENERIC_CLOCKEVENTS
        select ARM_GIC
        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_EBSA110
        bool "EBSA-110"
        select CPU_SA110
        select ISA
        select NO_IOPORT
        select ARCH_USES_GETTIMEOFFSET
        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
        help
          This enables support for the Cirrus EP93xx series of CPUs.

config ARCH_FOOTBRIDGE
        bool "FootBridge"
        select CPU_SA110
        select FOOTBRIDGE
        select GENERIC_CLOCKEVENTS
        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 HAVE_SCHED_CLOCK
        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
        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
        help
          Support for Intel's IOP13XX (XScale) family of processors.

config ARCH_IOP32X
        bool "IOP32x-based"
        depends on MMU
        select CPU_XSCALE
        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 PLAT_IOP
        select PCI
        select ARCH_REQUIRE_GPIOLIB
        help
          Support for Intel's IOP33X (XScale) family of processors.

config ARCH_IXP23XX
        bool "IXP23XX-based"
        depends on MMU
        select CPU_XSC3
        select PCI
        select ARCH_USES_GETTIMEOFFSET
        help
          Support for Intel's IXP23xx (XScale) family of processors.

config ARCH_IXP2000
        bool "IXP2400/2800-based"
        depends on MMU
        select CPU_XSCALE
        select PCI
        select ARCH_USES_GETTIMEOFFSET
        help
          Support for Intel's IXP2400/2800 (XScale) family of processors.

config ARCH_IXP4XX
        bool "IXP4xx-based"
        depends on MMU
        select CLKSRC_MMIO
        select CPU_XSCALE
        select GENERIC_GPIO
        select GENERIC_CLOCKEVENTS
        select HAVE_SCHED_CLOCK
        select MIGHT_HAVE_PCI
        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 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 PLAT_ORION
        help
          Support for the following Marvell Kirkwood series SoCs:
          88F6180, 88F6192 and 88F6281.

config ARCH_LOKI
        bool "Marvell Loki (88RC8480)"
        select CPU_FEROCEON
        select GENERIC_CLOCKEVENTS
        select PLAT_ORION
        help
          Support for the Marvell Loki (88RC8480) SoC.

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_TIME
        select GENERIC_CLOCKEVENTS
        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 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 HAVE_SCHED_CLOCK
        select TICK_ONESHOT
        select PLAT_PXA
        select SPARSE_IRQ
        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
        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_NUC93X
        bool "Nuvoton NUC93X CPU"
        select CPU_ARM926T
        select CLKDEV_LOOKUP
        help
          Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
          low-power and high performance MPEG-4/JPEG multimedia controller chip.

config ARCH_TEGRA
        bool "NVIDIA Tegra"
        select CLKDEV_LOOKUP
        select CLKSRC_MMIO
        select GENERIC_TIME
        select GENERIC_CLOCKEVENTS
        select GENERIC_GPIO
        select HAVE_CLK
        select HAVE_SCHED_CLOCK
        select ARCH_HAS_BARRIERS if CACHE_L2X0
        select ARCH_HAS_CPUFREQ
        help
          This enables support for NVIDIA Tegra based systems (Tegra APX,
          Tegra 6xx and Tegra 2 series).

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 HAVE_SCHED_CLOCK
        select TICK_ONESHOT
        select PLAT_PXA
        select SPARSE_IRQ
        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 GENERIC_CLOCKEVENTS
        select NO_IOPORT
        select SPARSE_IRQ
        select MULTI_IRQ_HANDLER
        help
          Support for Renesas's SH-Mobile and R-Mobile ARM platforms.

config ARCH_RPC
        bool "RiscPC"
        select ARCH_ACORN
        select FIQ
        select TIMER_ACORN
        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
        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 HAVE_CLK
        select HAVE_SCHED_CLOCK
        select TICK_ONESHOT
        select ARCH_REQUIRE_GPIOLIB
        help
          Support for StrongARM 11x0 based boards.

config ARCH_S3C2410
        bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
        select GENERIC_GPIO
        select ARCH_HAS_CPUFREQ
        select HAVE_CLK
        select ARCH_USES_GETTIMEOFFSET
        select HAVE_S3C2410_I2C if I2C
        help
          Samsung S3C2410X CPU 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).

          Note, the S3C2416 and the S3C2450 are so close that they even share
          the same SoC ID code. This means that there is no separate machine
          directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.

config ARCH_S3C64XX
        bool "Samsung S3C64XX"
        select PLAT_SAMSUNG
        select CPU_V6
        select ARM_VIC
        select HAVE_CLK
        select NO_IOPORT
        select ARCH_USES_GETTIMEOFFSET
        select ARCH_HAS_CPUFREQ
        select ARCH_REQUIRE_GPIOLIB
        select SAMSUNG_CLKSRC
        select SAMSUNG_IRQ_VIC_TIMER
        select SAMSUNG_IRQ_UART
        select S3C_GPIO_TRACK
        select S3C_GPIO_PULL_UPDOWN
        select S3C_GPIO_CFG_S3C24XX
        select S3C_GPIO_CFG_S3C64XX
        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 HAVE_S3C2410_WATCHDOG if WATCHDOG
        select GENERIC_CLOCKEVENTS
        select HAVE_SCHED_CLOCK
        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 CPU_V7
        select ARM_L1_CACHE_SHIFT_6
        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 GENERIC_GPIO
        select HAVE_CLK
        select ARM_L1_CACHE_SHIFT_6
        select ARCH_HAS_CPUFREQ
        select GENERIC_CLOCKEVENTS
        select HAVE_SCHED_CLOCK
        select HAVE_S3C2410_I2C if I2C
        select HAVE_S3C_RTC if RTC_CLASS
        select HAVE_S3C2410_WATCHDOG if WATCHDOG
        help
          Samsung S5PV210/S5PC110 series based systems

config ARCH_EXYNOS4
        bool "Samsung EXYNOS4"
        select CPU_V7
        select ARCH_SPARSEMEM_ENABLE
        select GENERIC_GPIO
        select HAVE_CLK
        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
        help
          Samsung EXYNOS4 series based systems

config ARCH_SHARK
        bool "Shark"
        select CPU_SA110
        select ISA
        select ISA_DMA
        select ZONE_DMA
        select PCI
        select ARCH_USES_GETTIMEOFFSET
        help
          Support for the StrongARM based Digital DNARD machine, also known
          as "Shark" (<http://www.shark-linux.de/shark.html>).

config ARCH_TCC_926
        bool "Telechips TCC ARM926-based systems"
        select CLKSRC_MMIO
        select CPU_ARM926T
        select HAVE_CLK
        select CLKDEV_LOOKUP
        select GENERIC_CLOCKEVENTS
        help
          Support for Telechips TCC ARM926-based systems.

config ARCH_U300
        bool "ST-Ericsson U300 Series"
        depends on MMU
        select CLKSRC_MMIO
        select CPU_ARM926T
        select HAVE_SCHED_CLOCK
        select HAVE_TCM
        select ARM_AMBA
        select ARM_VIC
        select GENERIC_CLOCKEVENTS
        select CLKDEV_LOOKUP
        select GENERIC_GPIO
        help
          Support for ST-Ericsson U300 series mobile platforms.

config ARCH_U8500
        bool "ST-Ericsson U8500 Series"
        select CPU_V7
        select ARM_AMBA
        select GENERIC_CLOCKEVENTS
        select CLKDEV_LOOKUP
        select ARCH_REQUIRE_GPIOLIB
        select ARCH_HAS_CPUFREQ
        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 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 GENERIC_CLOCKEVENTS
        select HAVE_SCHED_CLOCK
        select ARCH_HAS_HOLES_MEMORYMODEL
        help
          Support for TI's OMAP platform (OMAP1/2/3/4).

config ARCH_RK29
        bool "Rockchip Soc Rk29"
        select CPU_V7
        select HAVE_CLK
        select COMMON_CLKDEV
        select HAVE_SCHED_CLOCK
        select ARCH_HAS_CPUFREQ
        select GENERIC_TIME
        select GENERIC_CLOCKEVENTS
        select ARCH_REQUIRE_GPIOLIB
        select ARM_GIC
        select PL330
        select HIGHMEM
        select ZONE_DMA
        select ARM_L1_CACHE_SHIFT_6
        help
          Support for Rockchip RK29 soc.

config PLAT_SPEAR
        bool "ST SPEAr"
        select ARM_AMBA
        select ARCH_REQUIRE_GPIOLIB
        select CLKDEV_LOOKUP
        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.
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-ixp2000/Kconfig"

source "arch/arm/mach-ixp23xx/Kconfig"

source "arch/arm/mach-kirkwood/Kconfig"

source "arch/arm/mach-ks8695/Kconfig"

source "arch/arm/mach-loki/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/mach-nuc93x/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-rk29/Kconfig"

source "arch/arm/mach-sa1100/Kconfig"

source "arch/arm/plat-samsung/Kconfig"
source "arch/arm/plat-s3c24xx/Kconfig"
source "arch/arm/plat-s5p/Kconfig"

source "arch/arm/plat-spear/Kconfig"

source "arch/arm/plat-tcc/Kconfig"

if ARCH_S3C2410
source "arch/arm/mach-s3c2400/Kconfig"
source "arch/arm/mach-s3c2410/Kconfig"
source "arch/arm/mach-s3c2412/Kconfig"
source "arch/arm/mach-s3c2416/Kconfig"
source "arch/arm/mach-s3c2440/Kconfig"
source "arch/arm/mach-s3c2443/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-exynos4/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
        select HAVE_SCHED_CLOCK

config PLAT_ORION
        bool
        select CLKSRC_MMIO
        select GENERIC_IRQ_CHIP
        select HAVE_SCHED_CLOCK

config PLAT_PXA
        bool

config PLAT_VERSATILE
        bool

config ARM_TIMER_SP804
        bool
        select CLKSRC_MMIO

source arch/arm/mm/Kconfig

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.

#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
        bool
        depends on CPU_XSCALE && !XSCALE_PMU_TIMER
        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_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 "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 && SMP
        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 "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
          (r2p0..r2p2) 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 && SMP
        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 ARM_ERRATA_753970
        bool "ARM 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.

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"

source "kernel/time/Kconfig"

config SMP
        bool "Symmetric Multi-Processing"
        depends on CPU_V6K || CPU_V7
        depends on GENERIC_CLOCKEVENTS
        depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
                 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
                 ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
                 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
        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/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 HAVE_ARM_SCU
        bool
        depends on SMP
        help
          This option enables support for the ARM system coherency unit

config HAVE_ARM_TWD
        bool
        depends on SMP
        select TICK_ONESHOT
        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.

source kernel/Kconfig.preempt

config HZ
        int
        default 200 if ARCH_EBSA110 || ARCH_S3C2410 || 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
        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.

config ARM_FLUSH_CONSOLE_ON_RESTART
        bool "Force flush the console on restart"
        help
          If the console is locked while the system is rebooted, the messages
          in the temporary logbuffer would not have propogated to all the
          console drivers. This option forces the console lock to be
          released if it failed to be acquired, which will cause all the
          pending messages to be flushed.

endmenu

menu "Boot options"

config USE_OF
        bool "Flattened Device Tree support"
        select OF
        select OF_EARLY_FLATTREE
        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.

config ZBOOT_ROM_MMCIF
        bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
        depends on ZBOOT_ROM && ARCH_SH7372 && EXPERIMENTAL
        help
          Say Y here to include experimental MMCIF loading code in the
          ROM-able zImage. With this enabled it is possible to write the
          the ROM-able zImage kernel image to an MMC card and boot the
          kernel straight from the reset vector. At reset the processor
          Mask ROM will load the first part of the the ROM-able zImage
          which in turn loads the rest the kernel image to RAM using the
          MMCIF hardware block.

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
        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
        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_DEFAULT_GOV_USERSPACE

config CPU_FREQ_S3C64XX
        bool "CPUfreq support for Samsung S3C64XX CPUs"
        depends on CPU_FREQ && CPU_S3C6410

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_S3C2410 && 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_S5P64X0 && !ARCH_S5PC100
        depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
                CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
        def_bool y

endmenu

source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

source "arch/arm/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"