kconfig

来自「Linux Kernel 2.6.9 for OMAP1710」· 代码 · 共 87 行

if ARCH_IXP4XX

config ARCH_SUPPORTS_BIG_ENDIAN
	bool
	default y

menu "Intel IXP4xx Implementation Options"

comment "IXP4xx Platforms"

config ARCH_AVILA
	bool "Avila"
	help
	  Say 'Y' here if you want your kernel to support the Gateworks
	  Avila Network Platform. For more information on this platform,
	  see Documentation/arm/IXP4xx.

config ARCH_ADI_COYOTE
	bool "Coyote"
	help
	  Say 'Y' here if you want your kernel to support the ADI 
	  Engineering Coyote Gateway Reference Platform. For more
	  information on this platform, see Documentation/arm/IXP4xx.

config ARCH_IXDP425
	bool "IXDP425"
	help
	  Say 'Y' here if you want your kernel to support Intel's 
	  IXDP425 Development Platform (Also known as Richfield).  
	  For more information on this platform, see Documentation/arm/IXP4xx.

#
# IXCDP1100 is the exact same HW as IXDP425, but with a different machine 
# number from the bootloader due to marketing monkeys, so we just enable it 
# by default if IXDP425 is enabled.
#
config ARCH_IXCDP1100
	bool 
	depends on ARCH_IXDP425
	default y

config ARCH_PRPMC1100
	bool "PrPMC1100"
	help
	  Say 'Y' here if you want your kernel to support the Motorola
	  PrPCM1100 Processor Mezanine Module. For more information on
	  this platform, see Documentation/arm/IXP4xx.

#
# Avila and IXDP share the same source for now. Will change in future
#
config	ARCH_IXDP4XX
	bool
	depends on ARCH_IXDP425 || ARCH_AVILA
	default y

comment "IXP4xx Options"

config IXP4XX_INDIRECT_PCI
	bool "Use indirect PCI memory access"
	help
          IXP4xx provides two methods of accessing PCI memory space:

          1) A direct mapped window from 0x48000000 to 0x4bffffff (64MB).
             To access PCI via this space, we simply ioremap() the BAR
             into the kernel and we can use the standard read[bwl]/write[bwl]
             macros. This is the preffered method due to speed but it
             limits the system to just 64MB of PCI memory. This can be 
             problamatic if using video cards and other memory-heavy devices.
          
          2) If > 64MB of memory space is required, the IXP4xx can be 
	     configured to use indirect registers to access PCI This allows 
	     for up to 128MB (0x48000000 to 0x4fffffff) of memory on the bus. 
	     The disadvantadge of this is that every PCI access requires 
	     three local register accesses plus a spinlock, but in some 
	     cases the performance hit is acceptable. In addition, you cannot 
	     mmap() PCI devices in this case due to the indirect nature
	     of the PCI window.

	  By default, the direct method is used. Choose this option if you
	  need to use the indirect method instead. If you don't know
	  what you need, leave this option unselected.

endmenu

endif