mirror of
https://github.com/edk2-porting/linux-next.git
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1339 lines
32 KiB
Plaintext
1339 lines
32 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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mainmenu "Linux Kernel Configuration"
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config ARM
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bool
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default y
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select HAVE_AOUT
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select HAVE_IDE
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select RTC_LIB
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select SYS_SUPPORTS_APM_EMULATION
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select HAVE_OPROFILE
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select HAVE_ARCH_KGDB
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select HAVE_KPROBES if (!XIP_KERNEL)
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select HAVE_KRETPROBES if (HAVE_KPROBES)
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select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
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select HAVE_GENERIC_DMA_COHERENT
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help
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The ARM series is a line of low-power-consumption RISC chip designs
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licensed by ARM Ltd and targeted at embedded applications and
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handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
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manufactured, but legacy ARM-based PC hardware remains popular in
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Europe. There is an ARM Linux project with a web page at
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<http://www.arm.linux.org.uk/>.
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config HAVE_PWM
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bool
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config SYS_SUPPORTS_APM_EMULATION
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bool
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config GENERIC_GPIO
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bool
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default n
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config GENERIC_TIME
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bool
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default n
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config GENERIC_CLOCKEVENTS
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bool
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default n
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config GENERIC_CLOCKEVENTS_BROADCAST
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bool
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depends on GENERIC_CLOCKEVENTS
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default y if SMP && !LOCAL_TIMERS
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config MMU
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bool
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default y
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config NO_IOPORT
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bool
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default n
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config EISA
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bool
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---help---
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The Extended Industry Standard Architecture (EISA) bus was
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developed as an open alternative to the IBM MicroChannel bus.
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The EISA bus provided some of the features of the IBM MicroChannel
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bus while maintaining backward compatibility with cards made for
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the older ISA bus. The EISA bus saw limited use between 1988 and
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1995 when it was made obsolete by the PCI bus.
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Say Y here if you are building a kernel for an EISA-based machine.
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Otherwise, say N.
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config SBUS
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bool
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config MCA
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bool
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help
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MicroChannel Architecture is found in some IBM PS/2 machines and
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laptops. It is a bus system similar to PCI or ISA. See
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<file:Documentation/mca.txt> (and especially the web page given
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there) before attempting to build an MCA bus kernel.
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config GENERIC_HARDIRQS
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bool
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default y
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config STACKTRACE_SUPPORT
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bool
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default y
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config HAVE_LATENCYTOP_SUPPORT
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bool
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depends on !SMP
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default y
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config LOCKDEP_SUPPORT
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bool
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default y
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config TRACE_IRQFLAGS_SUPPORT
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bool
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default y
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config HARDIRQS_SW_RESEND
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bool
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default y
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config GENERIC_IRQ_PROBE
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bool
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default y
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config GENERIC_LOCKBREAK
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bool
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default y
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depends on SMP && PREEMPT
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config RWSEM_GENERIC_SPINLOCK
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bool
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default y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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config ARCH_HAS_ILOG2_U32
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bool
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default n
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config ARCH_HAS_ILOG2_U64
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bool
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default n
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config ARCH_MAY_HAVE_PC_FDC
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bool
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config ZONE_DMA
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bool
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config GENERIC_ISA_DMA
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bool
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config FIQ
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bool
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config ARCH_MTD_XIP
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bool
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config GENERIC_HARDIRQS_NO__DO_IRQ
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def_bool y
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if OPROFILE
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config OPROFILE_ARMV6
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def_bool y
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depends on CPU_V6 && !SMP
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select OPROFILE_ARM11_CORE
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config OPROFILE_MPCORE
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def_bool y
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depends on CPU_V6 && SMP
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select OPROFILE_ARM11_CORE
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config OPROFILE_ARM11_CORE
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bool
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config OPROFILE_ARMV7
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def_bool y
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depends on CPU_V7 && !SMP
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bool
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endif
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config VECTORS_BASE
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hex
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default 0xffff0000 if MMU || CPU_HIGH_VECTOR
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default DRAM_BASE if REMAP_VECTORS_TO_RAM
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default 0x00000000
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help
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The base address of exception vectors.
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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menu "System Type"
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choice
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prompt "ARM system type"
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default ARCH_VERSATILE
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config ARCH_AAEC2000
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bool "Agilent AAEC-2000 based"
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select CPU_ARM920T
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select ARM_AMBA
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select HAVE_CLK
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help
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This enables support for systems based on the Agilent AAEC-2000
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config ARCH_INTEGRATOR
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bool "ARM Ltd. Integrator family"
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select ARM_AMBA
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select HAVE_CLK
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select COMMON_CLKDEV
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select ICST525
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help
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Support for ARM's Integrator platform.
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config ARCH_REALVIEW
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bool "ARM Ltd. RealView family"
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select ARM_AMBA
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select HAVE_CLK
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select COMMON_CLKDEV
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select ICST307
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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help
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This enables support for ARM Ltd RealView boards.
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config ARCH_VERSATILE
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bool "ARM Ltd. Versatile family"
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select ARM_AMBA
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select ARM_VIC
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select HAVE_CLK
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select COMMON_CLKDEV
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select ICST307
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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help
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This enables support for ARM Ltd Versatile board.
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config ARCH_AT91
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bool "Atmel AT91"
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select GENERIC_GPIO
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select HAVE_CLK
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help
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This enables support for systems based on the Atmel AT91RM9200,
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AT91SAM9 and AT91CAP9 processors.
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config ARCH_CLPS711X
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bool "Cirrus Logic CLPS711x/EP721x-based"
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select CPU_ARM720T
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help
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Support for Cirrus Logic 711x/721x based boards.
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config ARCH_EBSA110
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bool "EBSA-110"
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select CPU_SA110
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select ISA
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select NO_IOPORT
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help
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This is an evaluation board for the StrongARM processor available
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from Digital. It has limited hardware on-board, including an
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Ethernet interface, two PCMCIA sockets, two serial ports and a
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parallel port.
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config ARCH_EP93XX
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bool "EP93xx-based"
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select CPU_ARM920T
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select ARM_AMBA
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select ARM_VIC
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select GENERIC_GPIO
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select HAVE_CLK
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select COMMON_CLKDEV
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select ARCH_REQUIRE_GPIOLIB
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help
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This enables support for the Cirrus EP93xx series of CPUs.
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config ARCH_FOOTBRIDGE
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bool "FootBridge"
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select CPU_SA110
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select FOOTBRIDGE
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help
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Support for systems based on the DC21285 companion chip
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("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
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config ARCH_NETX
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bool "Hilscher NetX based"
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select CPU_ARM926T
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select ARM_VIC
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select GENERIC_CLOCKEVENTS
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select GENERIC_TIME
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help
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This enables support for systems based on the Hilscher NetX Soc
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config ARCH_H720X
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bool "Hynix HMS720x-based"
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select CPU_ARM720T
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select ISA_DMA_API
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help
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This enables support for systems based on the Hynix HMS720x
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config ARCH_IMX
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bool "IMX"
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select CPU_ARM920T
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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help
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Support for Motorola's i.MX family of processors (MX1, MXL).
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config ARCH_IOP13XX
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bool "IOP13xx-based"
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depends on MMU
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select CPU_XSC3
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select PLAT_IOP
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select PCI
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select ARCH_SUPPORTS_MSI
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select VMSPLIT_1G
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help
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Support for Intel's IOP13XX (XScale) family of processors.
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config ARCH_IOP32X
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bool "IOP32x-based"
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depends on MMU
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select CPU_XSCALE
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select PLAT_IOP
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select PCI
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select GENERIC_GPIO
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select ARCH_REQUIRE_GPIOLIB
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help
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Support for Intel's 80219 and IOP32X (XScale) family of
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processors.
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config ARCH_IOP33X
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bool "IOP33x-based"
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depends on MMU
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select CPU_XSCALE
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select PLAT_IOP
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select PCI
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select GENERIC_GPIO
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select ARCH_REQUIRE_GPIOLIB
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help
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Support for Intel's IOP33X (XScale) family of processors.
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config ARCH_IXP23XX
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bool "IXP23XX-based"
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depends on MMU
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select CPU_XSC3
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select PCI
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help
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Support for Intel's IXP23xx (XScale) family of processors.
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config ARCH_IXP2000
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bool "IXP2400/2800-based"
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depends on MMU
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select CPU_XSCALE
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select PCI
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help
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Support for Intel's IXP2400/2800 (XScale) family of processors.
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config ARCH_IXP4XX
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bool "IXP4xx-based"
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depends on MMU
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select CPU_XSCALE
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select DMABOUNCE if PCI
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help
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Support for Intel's IXP4XX (XScale) family of processors.
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config ARCH_L7200
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bool "LinkUp-L7200"
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select CPU_ARM720T
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select FIQ
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help
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Say Y here if you intend to run this kernel on a LinkUp Systems
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L7200 Software Development Board which uses an ARM720T processor.
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Information on this board can be obtained at:
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<http://www.linkupsys.com/>
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If you have any questions or comments about the Linux kernel port
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to this board, send e-mail to <sjhill@cotw.com>.
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config ARCH_KIRKWOOD
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bool "Marvell Kirkwood"
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select CPU_FEROCEON
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select PCI
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select PLAT_ORION
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help
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Support for the following Marvell Kirkwood series SoCs:
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88F6180, 88F6192 and 88F6281.
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config ARCH_KS8695
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bool "Micrel/Kendin KS8695"
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select CPU_ARM922T
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select GENERIC_GPIO
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select ARCH_REQUIRE_GPIOLIB
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help
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Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
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System-on-Chip devices.
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config ARCH_NS9XXX
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bool "NetSilicon NS9xxx"
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select CPU_ARM926T
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select HAVE_CLK
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help
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Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
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System.
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<http://www.digi.com/products/microprocessors/index.jsp>
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config ARCH_LOKI
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bool "Marvell Loki (88RC8480)"
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select CPU_FEROCEON
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select PLAT_ORION
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help
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Support for the Marvell Loki (88RC8480) SoC.
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config ARCH_MV78XX0
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bool "Marvell MV78xx0"
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select CPU_FEROCEON
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select PCI
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select PLAT_ORION
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help
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Support for the following Marvell MV78xx0 series SoCs:
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MV781x0, MV782x0.
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config ARCH_MXC
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bool "Freescale MXC/iMX-based"
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select ARCH_MTD_XIP
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select GENERIC_GPIO
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select ARCH_REQUIRE_GPIOLIB
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help
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Support for Freescale MXC/iMX-based family of processors
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config ARCH_ORION5X
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bool "Marvell Orion"
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depends on MMU
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select CPU_FEROCEON
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select PCI
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select PLAT_ORION
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help
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Support for the following Marvell Orion 5x series SoCs:
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Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
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Orion-2 (5281), Orion-1-90 (6183).
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config ARCH_PNX4008
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bool "Philips Nexperia PNX4008 Mobile"
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select CPU_ARM926T
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select HAVE_CLK
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help
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This enables support for Philips PNX4008 mobile platform.
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config ARCH_PXA
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bool "PXA2xx/PXA3xx-based"
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depends on MMU
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select ARCH_MTD_XIP
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select GENERIC_GPIO
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select HAVE_CLK
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select COMMON_CLKDEV
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select ARCH_REQUIRE_GPIOLIB
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select TICK_ONESHOT
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help
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Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
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config ARCH_RPC
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bool "RiscPC"
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select ARCH_ACORN
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select FIQ
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select TIMER_ACORN
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select ARCH_MAY_HAVE_PC_FDC
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select HAVE_PATA_PLATFORM
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select ISA_DMA_API
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select NO_IOPORT
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select ARCH_SPARSEMEM_ENABLE
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help
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On the Acorn Risc-PC, Linux can support the internal IDE disk and
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CD-ROM interface, serial and parallel port, and the floppy drive.
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config ARCH_SA1100
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bool "SA1100-based"
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select CPU_SA1100
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select ISA
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select ARCH_SPARSEMEM_ENABLE
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select ARCH_MTD_XIP
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select GENERIC_GPIO
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select HAVE_CLK
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select TICK_ONESHOT
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select ARCH_REQUIRE_GPIOLIB
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help
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Support for StrongARM 11x0 based boards.
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config ARCH_S3C2410
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bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
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select GENERIC_GPIO
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select HAVE_CLK
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help
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Samsung S3C2410X CPU based systems, such as the Simtec Electronics
|
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BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
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the Samsung SMDK2410 development board (and derivatives).
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config ARCH_S3C64XX
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bool "Samsung S3C64XX"
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select GENERIC_GPIO
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select HAVE_CLK
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help
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Samsung S3C64XX series based systems
|
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|
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config ARCH_SHARK
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bool "Shark"
|
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select CPU_SA110
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select ISA
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select ISA_DMA
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select ZONE_DMA
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select PCI
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help
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Support for the StrongARM based Digital DNARD machine, also known
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as "Shark" (<http://www.shark-linux.de/shark.html>).
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config ARCH_LH7A40X
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bool "Sharp LH7A40X"
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select CPU_ARM922T
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select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
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select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
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help
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|
Say Y here for systems based on one of the Sharp LH7A40X
|
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System on a Chip processors. These CPUs include an ARM922T
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core with a wide array of integrated devices for
|
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hand-held and low-power applications.
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config ARCH_DAVINCI
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bool "TI DaVinci"
|
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select CPU_ARM926T
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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select GENERIC_GPIO
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select ARCH_REQUIRE_GPIOLIB
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select HAVE_CLK
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select ZONE_DMA
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help
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Support for TI's DaVinci platform.
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config ARCH_OMAP
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bool "TI OMAP"
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select GENERIC_GPIO
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select HAVE_CLK
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select ARCH_REQUIRE_GPIOLIB
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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help
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Support for TI's OMAP platform (OMAP1 and OMAP2).
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|
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config ARCH_MSM
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bool "Qualcomm MSM"
|
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select CPU_V6
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select GENERIC_TIME
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select GENERIC_CLOCKEVENTS
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|
help
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|
Support for Qualcomm MSM7K based systems. This runs on the ARM11
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|
apps processor of the MSM7K and depends on a shared memory
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|
interface to the ARM9 modem processor which runs the baseband stack
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|
and controls some vital subsystems (clock and power control, etc).
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|
|
|
config ARCH_W90X900
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|
bool "Nuvoton W90X900 CPU"
|
|
select CPU_ARM926T
|
|
help
|
|
Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
|
|
can login www.mcuos.com or www.nuvoton.com to know more.
|
|
|
|
endchoice
|
|
|
|
source "arch/arm/mach-clps711x/Kconfig"
|
|
|
|
source "arch/arm/mach-ep93xx/Kconfig"
|
|
|
|
source "arch/arm/mach-footbridge/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-loki/Kconfig"
|
|
|
|
source "arch/arm/mach-mv78xx0/Kconfig"
|
|
|
|
source "arch/arm/mach-pxa/Kconfig"
|
|
|
|
source "arch/arm/mach-sa1100/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-kirkwood/Kconfig"
|
|
|
|
source "arch/arm/plat-s3c24xx/Kconfig"
|
|
source "arch/arm/plat-s3c64xx/Kconfig"
|
|
source "arch/arm/plat-s3c/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-s3c2440/Kconfig"
|
|
source "arch/arm/mach-s3c2442/Kconfig"
|
|
source "arch/arm/mach-s3c2443/Kconfig"
|
|
endif
|
|
|
|
if ARCH_S3C64XX
|
|
source "arch/arm/mach-s3c6400/Kconfig"
|
|
source "arch/arm/mach-s3c6410/Kconfig"
|
|
endif
|
|
|
|
source "arch/arm/mach-lh7a40x/Kconfig"
|
|
|
|
source "arch/arm/mach-imx/Kconfig"
|
|
|
|
source "arch/arm/mach-h720x/Kconfig"
|
|
|
|
source "arch/arm/mach-versatile/Kconfig"
|
|
|
|
source "arch/arm/mach-aaec2000/Kconfig"
|
|
|
|
source "arch/arm/mach-realview/Kconfig"
|
|
|
|
source "arch/arm/mach-at91/Kconfig"
|
|
|
|
source "arch/arm/plat-mxc/Kconfig"
|
|
|
|
source "arch/arm/mach-netx/Kconfig"
|
|
|
|
source "arch/arm/mach-ns9xxx/Kconfig"
|
|
|
|
source "arch/arm/mach-davinci/Kconfig"
|
|
|
|
source "arch/arm/mach-ks8695/Kconfig"
|
|
|
|
source "arch/arm/mach-msm/Kconfig"
|
|
|
|
source "arch/arm/mach-w90x900/Kconfig"
|
|
|
|
# Definitions to make life easier
|
|
config ARCH_ACORN
|
|
bool
|
|
|
|
config PLAT_IOP
|
|
bool
|
|
|
|
config PLAT_ORION
|
|
bool
|
|
|
|
source arch/arm/mm/Kconfig
|
|
|
|
config IWMMXT
|
|
bool "Enable iWMMXt support"
|
|
depends on CPU_XSCALE || CPU_XSC3
|
|
default y if PXA27x || PXA3xx
|
|
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
|
|
|
|
if !MMU
|
|
source "arch/arm/Kconfig-nommu"
|
|
endif
|
|
|
|
endmenu
|
|
|
|
source "arch/arm/common/Kconfig"
|
|
|
|
config FORCE_MAX_ZONEORDER
|
|
int
|
|
depends on SA1111
|
|
default "9"
|
|
|
|
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_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
|
|
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_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 (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
|
|
select USE_GENERIC_SMP_HELPERS
|
|
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://www.linuxdoc.org/docs.html#howto>.
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
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 && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || REALVIEW_EB_A9MP)
|
|
default y
|
|
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 PREEMPT
|
|
bool "Preemptible Kernel (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL
|
|
help
|
|
This option reduces the latency of the kernel when reacting to
|
|
real-time or interactive events by allowing a low priority process to
|
|
be preempted even if it is in kernel mode executing a system call.
|
|
This allows applications to run more reliably even when the system is
|
|
under load.
|
|
|
|
Say Y here if you are building a kernel for a desktop, embedded
|
|
or real-time system. Say N if you are unsure.
|
|
|
|
config HZ
|
|
int
|
|
default 128 if ARCH_L7200
|
|
default 200 if ARCH_EBSA110 || ARCH_S3C2410
|
|
default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
|
|
default AT91_TIMER_HZ if ARCH_AT91
|
|
default 100
|
|
|
|
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
|
|
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_FLATMEM_HAS_HOLES
|
|
bool
|
|
default y
|
|
depends on FLATMEM
|
|
|
|
# Discontigmem is deprecated
|
|
config ARCH_DISCONTIGMEM_ENABLE
|
|
bool
|
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
|
bool
|
|
|
|
config ARCH_SPARSEMEM_DEFAULT
|
|
def_bool ARCH_SPARSEMEM_ENABLE
|
|
|
|
config ARCH_SELECT_MEMORY_MODEL
|
|
def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
|
|
|
|
config NODES_SHIFT
|
|
int
|
|
default "4" if ARCH_LH7A40X
|
|
default "2"
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
source "mm/Kconfig"
|
|
|
|
config LEDS
|
|
bool "Timer and CPU usage LEDs"
|
|
depends on ARCH_CDB89712 || ARCH_EBSA110 || \
|
|
ARCH_EBSA285 || ARCH_IMX || 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
|
|
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
|
|
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.
|
|
|
|
endmenu
|
|
|
|
menu "Boot options"
|
|
|
|
# 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 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).
|
|
|
|
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.
|
|
|
|
endmenu
|
|
|
|
menu "CPU Power Management"
|
|
|
|
if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
|
|
|
|
source "drivers/cpufreq/Kconfig"
|
|
|
|
config CPU_FREQ_SA1100
|
|
bool
|
|
depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
|
|
default y
|
|
|
|
config CPU_FREQ_SA1110
|
|
bool
|
|
depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
|
|
default y
|
|
|
|
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_IMX
|
|
tristate "CPUfreq driver for i.MX CPUs"
|
|
depends on ARCH_IMX && CPU_FREQ
|
|
default n
|
|
help
|
|
This enables the CPUfreq driver for i.MX CPUs.
|
|
|
|
If in doubt, say N.
|
|
|
|
config CPU_FREQ_PXA
|
|
bool
|
|
depends on CPU_FREQ && ARCH_PXA && PXA25x
|
|
default y
|
|
select CPU_FREQ_DEFAULT_GOV_USERSPACE
|
|
|
|
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
|
|
---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_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
|
|
def_bool y
|
|
|
|
endmenu
|
|
|
|
source "net/Kconfig"
|
|
|
|
menu "Device Drivers"
|
|
|
|
source "drivers/base/Kconfig"
|
|
|
|
source "drivers/connector/Kconfig"
|
|
|
|
if ALIGNMENT_TRAP || !CPU_CP15_MMU
|
|
source "drivers/mtd/Kconfig"
|
|
endif
|
|
|
|
source "drivers/parport/Kconfig"
|
|
|
|
source "drivers/pnp/Kconfig"
|
|
|
|
source "drivers/block/Kconfig"
|
|
|
|
# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
|
|
|
|
source "drivers/misc/Kconfig"
|
|
|
|
source "drivers/ide/Kconfig"
|
|
|
|
source "drivers/scsi/Kconfig"
|
|
|
|
source "drivers/ata/Kconfig"
|
|
|
|
source "drivers/md/Kconfig"
|
|
|
|
source "drivers/message/fusion/Kconfig"
|
|
|
|
source "drivers/ieee1394/Kconfig"
|
|
|
|
source "drivers/message/i2o/Kconfig"
|
|
|
|
source "drivers/net/Kconfig"
|
|
|
|
source "drivers/isdn/Kconfig"
|
|
|
|
# input before char - char/joystick depends on it. As does USB.
|
|
|
|
source "drivers/input/Kconfig"
|
|
|
|
source "drivers/char/Kconfig"
|
|
|
|
source "drivers/i2c/Kconfig"
|
|
|
|
source "drivers/spi/Kconfig"
|
|
|
|
source "drivers/gpio/Kconfig"
|
|
|
|
source "drivers/w1/Kconfig"
|
|
|
|
source "drivers/power/Kconfig"
|
|
|
|
source "drivers/hwmon/Kconfig"
|
|
|
|
source "drivers/thermal/Kconfig"
|
|
|
|
source "drivers/watchdog/Kconfig"
|
|
|
|
source "drivers/ssb/Kconfig"
|
|
|
|
#source "drivers/l3/Kconfig"
|
|
|
|
source "drivers/mfd/Kconfig"
|
|
|
|
source "drivers/media/Kconfig"
|
|
|
|
source "drivers/video/Kconfig"
|
|
|
|
source "sound/Kconfig"
|
|
|
|
source "drivers/hid/Kconfig"
|
|
|
|
source "drivers/usb/Kconfig"
|
|
|
|
source "drivers/uwb/Kconfig"
|
|
|
|
source "drivers/mmc/Kconfig"
|
|
|
|
source "drivers/memstick/Kconfig"
|
|
|
|
source "drivers/accessibility/Kconfig"
|
|
|
|
source "drivers/leds/Kconfig"
|
|
|
|
source "drivers/rtc/Kconfig"
|
|
|
|
source "drivers/dma/Kconfig"
|
|
|
|
source "drivers/dca/Kconfig"
|
|
|
|
source "drivers/auxdisplay/Kconfig"
|
|
|
|
source "drivers/regulator/Kconfig"
|
|
|
|
source "drivers/uio/Kconfig"
|
|
|
|
endmenu
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "arch/arm/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|