[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: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ppc/syslib/mpc52xx_setup.c b/arch/ppc/syslib/mpc52xx_setup.c
index bb23745..a4a4b02 100644
--- a/arch/ppc/syslib/mpc52xx_setup.c
+++ b/arch/ppc/syslib/mpc52xx_setup.c
@@ -84,9 +84,11 @@
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);
}