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authorPaul Gortmaker <paul.gortmaker@windriver.com>2011-12-30 23:53:06 -0500
committerKumar Gala <galak@kernel.crashing.org>2012-01-11 13:58:07 -0600
commitaf35be6ac962a737005737ab479da93cac2f596f (patch)
treeea2b5c6badc2fd034f6855ae91df33da4f168440 /board/sbc8548/tlb.c
parent1667013ddfa95007c242d7772fb38e3e3bf72b48 (diff)
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Revert "SBC8548: fix address mask to allow 64M flash"
This reverts commit ccf1ad535ae1c0dc2d466235c668adbdfe3a55b7. The commit "SBC8548: fix address mask to allow 64M flash" essentially made this change: * OR6: - * Addr Mask = 64M = OR6[0:16] = 1111 1100 0000 0000 0 + * Addr Mask = 64M = OR6[0:16] = 1111 1000 0000 0000 0 But this makes no sense, as section 13.3.1.2.1 in the MPC8548ERM v2 clearly indicates the masks: 1111_1111_1000_0000_0 8 Mbytes 1111_1100_0000_0000_0 64 Mbytes 1111_1000_0000_0000_0 128 Mbytes So the original value was correct, and the commit was invalid, causing a 128MB mapping for a 64MB flash device. The problem rears its head when trying to configure u-boot to have access to both flash, since the default memory map is: FB80_0000 – FF7F_FFFF 32-bits 64MB FLASH SODIMM FF80_0000 – FFFF_FFFF 8-bits 8MB FLASH By extending the mapping of the 64MB flash to 128MB, it now conflicts with the normal 8MB boot flash, causing issues. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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