mirror of https://gitee.com/openkylin/linux.git
745 lines
21 KiB
Plaintext
745 lines
21 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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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 MMU
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bool
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default y
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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 UID16
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bool
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default y
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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 GENERIC_CALIBRATE_DELAY
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bool
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default y
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config GENERIC_BUST_SPINLOCK
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bool
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config GENERIC_ISA_DMA
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bool
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config GENERIC_IOMAP
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bool
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default y
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config FIQ
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bool
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source "init/Kconfig"
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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_RPC
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config ARCH_CLPS7500
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bool "Cirrus-CL-PS7500FE"
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select TIMER_ACORN
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select ISA
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config ARCH_CLPS711X
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bool "CLPS711x/EP721x-based"
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config ARCH_CO285
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bool "Co-EBSA285"
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select FOOTBRIDGE
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select FOOTBRIDGE_ADDIN
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config ARCH_EBSA110
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bool "EBSA-110"
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select ISA
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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 onboard
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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_CAMELOT
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bool "Epxa10db"
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help
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This enables support for Altera's Excalibur XA10 development board.
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If you would like to build your kernel to run on one of these boards
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then you must say 'Y' here. Otherwise say 'N'
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config ARCH_FOOTBRIDGE
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bool "FootBridge"
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select FOOTBRIDGE
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config ARCH_INTEGRATOR
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bool "Integrator"
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select ARM_AMBA
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select ICST525
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config ARCH_IOP3XX
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bool "IOP3xx-based"
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select PCI
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config ARCH_IXP4XX
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bool "IXP4xx-based"
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select DMABOUNCE
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select PCI
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config ARCH_IXP2000
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bool "IXP2400/2800-based"
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select PCI
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config ARCH_L7200
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bool "LinkUp-L7200"
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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_PXA
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bool "PXA2xx-based"
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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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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 ISA
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select DISCONTIGMEM
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config ARCH_S3C2410
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bool "Samsung S3C2410"
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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 derviatives).
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config ARCH_SHARK
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bool "Shark"
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select ISA
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select ISA_DMA
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select PCI
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config ARCH_LH7A40X
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bool "Sharp LH7A40X"
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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_OMAP
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bool "TI OMAP"
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config ARCH_VERSATILE
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bool "Versatile"
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select ARM_AMBA
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select ICST307
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help
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This enables support for ARM Ltd Versatile board.
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config ARCH_IMX
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bool "IMX"
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config ARCH_H720X
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bool "Hynix-HMS720x-based"
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help
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This enables support for systems based on the Hynix HMS720x
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endchoice
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source "arch/arm/mach-clps711x/Kconfig"
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source "arch/arm/mach-epxa10db/Kconfig"
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source "arch/arm/mach-footbridge/Kconfig"
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source "arch/arm/mach-integrator/Kconfig"
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source "arch/arm/mach-iop3xx/Kconfig"
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source "arch/arm/mach-ixp4xx/Kconfig"
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source "arch/arm/mach-ixp2000/Kconfig"
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source "arch/arm/mach-pxa/Kconfig"
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source "arch/arm/mach-sa1100/Kconfig"
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source "arch/arm/mach-omap/Kconfig"
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source "arch/arm/mach-s3c2410/Kconfig"
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source "arch/arm/mach-lh7a40x/Kconfig"
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source "arch/arm/mach-imx/Kconfig"
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source "arch/arm/mach-h720x/Kconfig"
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source "arch/arm/mach-versatile/Kconfig"
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# Definitions to make life easier
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config ARCH_ACORN
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bool
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source arch/arm/mm/Kconfig
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# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
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config XSCALE_PMU
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bool
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depends on CPU_XSCALE && !XSCALE_PMU_TIMER
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default y
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endmenu
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source "arch/arm/common/Kconfig"
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config FORCE_MAX_ZONEORDER
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int
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depends on SA1111
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default "9"
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menu "Bus support"
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config ARM_AMBA
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bool
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config ISA
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bool
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help
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Find out whether you have ISA slots on your motherboard. ISA is the
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name of a bus system, i.e. the way the CPU talks to the other stuff
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inside your box. Other bus systems are PCI, EISA, MicroChannel
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(MCA) or VESA. ISA is an older system, now being displaced by PCI;
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newer boards don't support it. If you have ISA, say Y, otherwise N.
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config ISA_DMA
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bool
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config ISA_DMA_API
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bool
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default y
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config PCI
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bool "PCI support" if ARCH_INTEGRATOR_AP
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help
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Find out whether you have a PCI motherboard. PCI is the name of a
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bus system, i.e. the way the CPU talks to the other stuff inside
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your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
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VESA. If you have PCI, say Y, otherwise N.
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The PCI-HOWTO, available from
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<http://www.tldp.org/docs.html#howto>, contains valuable
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information about which PCI hardware does work under Linux and which
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doesn't.
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# Select the host bridge type
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config PCI_HOST_VIA82C505
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bool
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depends on PCI && ARCH_SHARK
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default y
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source "drivers/pci/Kconfig"
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source "drivers/pcmcia/Kconfig"
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endmenu
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menu "Kernel Features"
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config SMP
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bool "Symmetric Multi-Processing (EXPERIMENTAL)"
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depends on EXPERIMENTAL #&& n
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help
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, like most personal computers, say N. If
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you have a system with more than one CPU, say Y.
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If you say N here, the kernel will run on single and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all, single
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processor machines. On a single processor machine, the kernel will
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run faster if you say N here.
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See also the <file:Documentation/smp.tex>,
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<file:Documentation/smp.txt>, <file:Documentation/i386/IO-APIC.txt>,
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<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
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<http://www.linuxdoc.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config NR_CPUS
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int "Maximum number of CPUs (2-32)"
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range 2 32
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depends on SMP
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default "4"
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config PREEMPT
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bool "Preemptible Kernel (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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help
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This option reduces the latency of the kernel when reacting to
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real-time or interactive events by allowing a low priority process to
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be preempted even if it is in kernel mode executing a system call.
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This allows applications to run more reliably even when the system is
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under load.
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Say Y here if you are building a kernel for a desktop, embedded
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or real-time system. Say N if you are unsure.
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config DISCONTIGMEM
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bool
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default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
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help
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Say Y to support efficient handling of discontiguous physical memory,
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for architectures which are either NUMA (Non-Uniform Memory Access)
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or have huge holes in the physical address space for other reasons.
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See <file:Documentation/vm/numa> for more.
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config LEDS
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bool "Timer and CPU usage LEDs"
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depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
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ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
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ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
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ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
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ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE
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help
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If you say Y here, the LEDs on your machine will be used
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to provide useful information about your current system status.
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If you are compiling a kernel for a NetWinder or EBSA-285, you will
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be able to select which LEDs are active using the options below. If
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you are compiling a kernel for the EBSA-110 or the LART however, the
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red LED will simply flash regularly to indicate that the system is
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still functional. It is safe to say Y here if you have a CATS
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system, but the driver will do nothing.
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config LEDS_TIMER
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bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
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MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
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depends on LEDS
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default y if ARCH_EBSA110
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help
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If you say Y here, one of the system LEDs (the green one on the
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NetWinder, the amber one on the EBSA285, or the red one on the LART)
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will flash regularly to indicate that the system is still
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operational. This is mainly useful to kernel hackers who are
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debugging unstable kernels.
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The LART uses the same LED for both Timer LED and CPU usage LED
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functions. You may choose to use both, but the Timer LED function
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will overrule the CPU usage LED.
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config LEDS_CPU
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bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
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!ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
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depends on LEDS
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help
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If you say Y here, the red LED will be used to give a good real
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time indication of CPU usage, by lighting whenever the idle task
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is not currently executing.
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The LART uses the same LED for both Timer LED and CPU usage LED
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functions. You may choose to use both, but the Timer LED function
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will overrule the CPU usage LED.
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config ALIGNMENT_TRAP
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bool
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default y if !ARCH_EBSA110
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help
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ARM processors can not fetch/store information which is not
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naturally aligned on the bus, i.e., a 4 byte fetch must start at an
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address divisible by 4. On 32-bit ARM processors, these non-aligned
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fetch/store instructions will be emulated in software if you say
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here, which has a severe performance impact. This is necessary for
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correct operation of some network protocols. With an IP-only
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configuration it is safe to say N, otherwise say Y.
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endmenu
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menu "Boot options"
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# Compressed boot loader in ROM. Yes, we really want to ask about
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# TEXT and BSS so we preserve their values in the config files.
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config ZBOOT_ROM_TEXT
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hex "Compressed ROM boot loader base address"
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default "0"
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help
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The physical address at which the ROM-able zImage is to be
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placed in the target. Platforms which normally make use of
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ROM-able zImage formats normally set this to a suitable
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value in their defconfig file.
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If ZBOOT_ROM is not enabled, this has no effect.
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config ZBOOT_ROM_BSS
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hex "Compressed ROM boot loader BSS address"
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default "0"
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help
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The base address of 64KiB of read/write memory in the target
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for the ROM-able zImage, which must be available while the
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decompressor is running. Platforms which normally make use of
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ROM-able zImage formats normally set this to a suitable
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value in their defconfig file.
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If ZBOOT_ROM is not enabled, this has no effect.
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config ZBOOT_ROM
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bool "Compressed boot loader in ROM/flash"
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depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
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help
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Say Y here if you intend to execute your compressed kernel image
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(zImage) directly from ROM or flash. If unsure, say N.
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config CMDLINE
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string "Default kernel command string"
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default ""
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help
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On some architectures (EBSA110 and CATS), there is currently no way
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for the boot loader to pass arguments to the kernel. For these
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architectures, you should supply some command-line options at build
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time by entering them here. As a minimum, you should specify the
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memory size and the root device (e.g., mem=64M root=/dev/nfs).
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config XIP_KERNEL
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bool "Kernel Execute-In-Place from ROM"
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depends on !ZBOOT_ROM
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help
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Execute-In-Place allows the kernel to run from non-volatile storage
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directly addressable by the CPU, such as NOR flash. This saves RAM
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space since the text section of the kernel is not loaded from flash
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to RAM. Read-write sections, such as the data section and stack,
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are still copied to RAM. The XIP kernel is not compressed since
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it has to run directly from flash, so it will take more space to
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store it. The flash address used to link the kernel object files,
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and for storing it, is configuration dependent. Therefore, if you
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say Y here, you must know the proper physical address where to
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store the kernel image depending on your own flash memory usage.
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Also note that the make target becomes "make xipImage" rather than
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"make zImage" or "make Image". The final kernel binary to put in
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ROM memory will be arch/arm/boot/xipImage.
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If unsure, say N.
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config XIP_PHYS_ADDR
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hex "XIP Kernel Physical Location"
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depends on XIP_KERNEL
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default "0x00080000"
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help
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This is the physical address in your flash memory the kernel will
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be linked for and stored to. This address is dependent on your
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own flash usage.
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endmenu
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if (ARCH_SA1100 || ARCH_INTEGRATOR)
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menu "CPU Frequency scaling"
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source "drivers/cpufreq/Kconfig"
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config CPU_FREQ_SA1100
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bool
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depends on CPU_FREQ && (SA1100_LART || SA1100_PLEB)
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default y
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config CPU_FREQ_SA1110
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bool
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depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
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default y
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config CPU_FREQ_INTEGRATOR
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tristate "CPUfreq driver for ARM Integrator CPUs"
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depends on ARCH_INTEGRATOR && CPU_FREQ
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default y
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help
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This enables the CPUfreq driver for ARM Integrator CPUs.
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For details, take a look at <file:Documentation/cpu-freq>.
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If in doubt, say Y.
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endmenu
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endif
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menu "Floating point emulation"
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comment "At least one emulation must be selected"
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config FPE_NWFPE
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bool "NWFPE math emulation"
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---help---
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Say Y to include the NWFPE floating point emulator in the kernel.
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This is necessary to run most binaries. Linux does not currently
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support floating point hardware so you need to say Y here even if
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your machine has an FPA or floating point co-processor podule.
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You may say N here if you are going to load the Acorn FPEmulator
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early in the bootup.
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config FPE_NWFPE_XP
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bool "Support extended precision"
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depends on FPE_NWFPE && !CPU_BIG_ENDIAN
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help
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Say Y to include 80-bit support in the kernel floating-point
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emulator. Otherwise, only 32 and 64-bit support is compiled in.
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Note that gcc does not generate 80-bit operations by default,
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so in most cases this option only enlarges the size of the
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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 !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
|
|
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.
|
|
|
|
endmenu
|
|
|
|
menu "Userspace binary formats"
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
config ARTHUR
|
|
tristate "RISC OS personality"
|
|
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"
|
|
|
|
config PM
|
|
bool "Power Management support"
|
|
---help---
|
|
"Power Management" means that parts of your computer are shut
|
|
off or put into a power conserving "sleep" mode if they are not
|
|
being used. There are two competing standards for doing this: APM
|
|
and ACPI. If you want to use either one, say Y here and then also
|
|
to the requisite support below.
|
|
|
|
Power Management is most important for battery powered laptop
|
|
computers; if you have a laptop, check out the Linux Laptop home
|
|
page on the WWW at <http://www.linux-on-laptops.com/> or
|
|
Tuxmobil - Linux on Mobile Computers at <http://www.tuxmobil.org/>
|
|
and the Battery Powered Linux mini-HOWTO, available from
|
|
<http://www.tldp.org/docs.html#howto>.
|
|
|
|
Note that, even if you say N here, Linux on the x86 architecture
|
|
will issue the hlt instruction if nothing is to be done, thereby
|
|
sending the processor to sleep and saving power.
|
|
|
|
config APM
|
|
tristate "Advanced Power Management Emulation"
|
|
depends on PM
|
|
---help---
|
|
APM is a BIOS specification for saving power using several different
|
|
techniques. This is mostly useful for battery powered laptops with
|
|
APM compliant BIOSes. If you say Y here, the system time will be
|
|
reset after a RESUME operation, the /proc/apm device will provide
|
|
battery status information, and user-space programs will receive
|
|
notification of APM "events" (e.g. battery status change).
|
|
|
|
If you select "Y" here, you can disable actual use of the APM
|
|
BIOS by passing the "apm=off" option to the kernel at boot time.
|
|
|
|
Note that the APM support is almost completely disabled for
|
|
machines with more than one CPU.
|
|
|
|
In order to use APM, you will need supporting software. For location
|
|
and more information, read <file:Documentation/pm.txt> and the
|
|
Battery Powered Linux mini-HOWTO, available from
|
|
<http://www.tldp.org/docs.html#howto>.
|
|
|
|
This driver does not spin down disk drives (see the hdparm(8)
|
|
manpage ("man 8 hdparm") for that), and it doesn't turn off
|
|
VESA-compliant "green" monitors.
|
|
|
|
This driver does not support the TI 4000M TravelMate and the ACER
|
|
486/DX4/75 because they don't have compliant BIOSes. Many "green"
|
|
desktop machines also don't have compliant BIOSes, and this driver
|
|
may cause those machines to panic during the boot phase.
|
|
|
|
Generally, if you don't have a battery in your machine, there isn't
|
|
much point in using this driver and you should say N. If you get
|
|
random kernel OOPSes or reboots that don't seem to be related to
|
|
anything, try disabling/enabling this option (or disabling/enabling
|
|
APM in your BIOS).
|
|
|
|
Some other things you should try when experiencing seemingly random,
|
|
"weird" problems:
|
|
|
|
1) make sure that you have enough swap space and that it is
|
|
enabled.
|
|
2) pass the "no-hlt" option to the kernel
|
|
3) switch on floating point emulation in the kernel and pass
|
|
the "no387" option to the kernel
|
|
4) pass the "floppy=nodma" option to the kernel
|
|
5) pass the "mem=4M" option to the kernel (thereby disabling
|
|
all but the first 4 MB of RAM)
|
|
6) make sure that the CPU is not over clocked.
|
|
7) read the sig11 FAQ at <http://www.bitwizard.nl/sig11/>
|
|
8) disable the cache from your BIOS settings
|
|
9) install a fan for the video card or exchange video RAM
|
|
10) install a better fan for the CPU
|
|
11) exchange RAM chips
|
|
12) exchange the motherboard.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called apm.
|
|
|
|
endmenu
|
|
|
|
menu "Device Drivers"
|
|
|
|
source "drivers/base/Kconfig"
|
|
|
|
if ALIGNMENT_TRAP
|
|
source "drivers/mtd/Kconfig"
|
|
endif
|
|
|
|
source "drivers/parport/Kconfig"
|
|
|
|
source "drivers/pnp/Kconfig"
|
|
|
|
source "drivers/block/Kconfig"
|
|
|
|
source "drivers/acorn/block/Kconfig"
|
|
|
|
if ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
|
|
source "drivers/ide/Kconfig"
|
|
endif
|
|
|
|
source "drivers/scsi/Kconfig"
|
|
|
|
source "drivers/md/Kconfig"
|
|
|
|
source "drivers/message/fusion/Kconfig"
|
|
|
|
source "drivers/ieee1394/Kconfig"
|
|
|
|
source "drivers/message/i2o/Kconfig"
|
|
|
|
source "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/l3/Kconfig"
|
|
|
|
source "drivers/misc/Kconfig"
|
|
|
|
source "drivers/media/Kconfig"
|
|
|
|
source "drivers/video/Kconfig"
|
|
|
|
source "sound/Kconfig"
|
|
|
|
source "drivers/usb/Kconfig"
|
|
|
|
source "drivers/mmc/Kconfig"
|
|
|
|
endmenu
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "arch/arm/oprofile/Kconfig"
|
|
|
|
source "arch/arm/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|