From: Jens.Osterkamp@de.ibm.com Date: Fri, 9 Dec 2005 18:04:20 +0000 (+0100) Subject: [PATCH] powerpc/cell: add iommu support for larger memory X-Git-Tag: v2.6.16-rc1~666^2~58 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49d65b3ac5614431041abcd2eabc0d77eff5e32d;p=pandora-kernel.git [PATCH] powerpc/cell: add iommu support for larger memory 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 Signed-off-by: Paul Mackerras --- Reading git-diff-tree failed