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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/Kconfig
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
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-config ARM
- bool
- default y
- select HAVE_AOUT
- select HAVE_DMA_API_DEBUG
- select HAVE_IDE if PCI || ISA || PCMCIA
- 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_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 GENERIC_IRQ_SHOW
- select CPU_PM if (SUSPEND || CPU_IDLE)
- select GENERIC_PCI_IOMAP
- select HAVE_BPF_JIT if NET
- 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 HAVE_PWM
- bool
-
-config MIGHT_HAVE_PCI
- bool
-
-config SYS_SUPPORTS_APM_EMULATION
- 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 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_WMT
-
-config ARCH_WMT
- bool "WonderMedia Technology"
- select NEED_MACH_IO_H
- select ARCH_HAS_CPUFREQ
- select GENERIC_CLOCKEVENTS
- select MIGHT_HAVE_CACHE_L2X0
- select ARM_GIC
- select HAVE_SMP
- select ARCH_REQUIRE_GPIOLIB
- select HAVE_PWM
- select HAVE_CLK
- select COMMON_CLK
- select CLKDEV_LOOKUP
- help
- This enables support for systems based on a WonderMedia Technology system.
-
-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
- 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 the Atmel AT91RM9200,
- 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-based"
- select CPU_ARM720T
- select ARCH_USES_GETTIMEOFFSET
- select NEED_MACH_MEMORY_H
- help
- Support for Cirrus Logic 711x/721x 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 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 HAVE_CLK_PREPARE
- 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_IXP23XX
- bool "IXP23XX-based"
- depends on MMU
- select CPU_XSC3
- select PCI
- select ARCH_USES_GETTIMEOFFSET
- select NEED_MACH_IO_H
- select NEED_MACH_MEMORY_H
- 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
- select NEED_MACH_IO_H
- select NEED_MACH_MEMORY_H
- help
- Support for Intel's IXP2400/2800 (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
- 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 TICK_ONESHOT
- 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 TICK_ONESHOT
- 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 TICK_ONESHOT
- 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 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 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-wmt/Kconfig"
-
-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-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-s5p/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
-
-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 ARCH_WMT || 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 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 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.
-
-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 300 if ARCH_WMT
- 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_WMT || 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_WMT
- 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
- 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 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 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
- depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
- CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
- def_bool y
-
-config ARM_CPU_SUSPEND
- def_bool PM_SLEEP
-
-config ARCH_HIBERNATION_POSSIBLE
- bool
- depends on MMU
- default y if CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || CPU_XSCALE || CPU_XSC3 || CPU_V6 || CPU_V6K || CPU_V7
- help
- Support for Suspend to Disk.
-
-source "kernel/power/Kconfig"
-
-endmenu
-
-source "net/Kconfig"
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/arm/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"