Commit 4aa7c801 authored by Sylvain Munaut's avatar Sylvain Munaut Committed by Linus Torvalds
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[PATCH] ppc32: Fix static IO mapping for Freescale MPC52xx



The current iomapping used MBAR_SIZE for the size argument of
io_block_mapping, resulting in a call to setbat with a size argument of 64k
which is invalid.

This patch correct this and maps the whole 0xf0000000->0xffffffff range so
that devices on the local bus are also included in the BAT mapping.

Thanks to Bernhard Kuhn from Metrowerks for pointing this out.
Signed-off-by: default avatarSylvain Munaut <tnt@246tNt.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent d62de3aa
......@@ -84,9 +84,11 @@ mpc52xx_set_bat(void)
void __init
mpc52xx_map_io(void)
{
/* Here we only map the MBAR */
/* Here we map the MBAR and the whole upper zone. MBAR is only
64k but we can't map only 64k with BATs. Map the whole
0xf0000000 range is ok and helps eventual lpb devices placed there */
io_block_mapping(
MPC52xx_MBAR_VIRT, MPC52xx_MBAR, MPC52xx_MBAR_SIZE, _PAGE_IO);
MPC52xx_MBAR_VIRT, MPC52xx_MBAR, 0x10000000, _PAGE_IO);
}
......
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