49d65b3ac5
So far, the iommu code was hardwired to a linear mapping between 0x20000000 and 0x40000000, so it could only support 512MB of RAM. This patch still keeps the linear mapping, but looks for proper ibm,dma-window properties to set up larger windows, this makes the maximum supported RAM size 2GB. If there is anything unusual about the dma-window properties, we fall back to the old behavior. We also support switching off the iommu completely now with the regular iommu=off command line option. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> |
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boot | ||
configs | ||
kernel | ||
lib | ||
mm | ||
oprofile | ||
platforms | ||
sysdev | ||
xmon | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |