Commit 84a6fcb3 authored by Hauke Mehrtens's avatar Hauke Mehrtens Committed by Ralf Baechle
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MIPS: BCM47xx: Fix 128MB RAM support



Ignoring the last page when ddr size is 128M. Cached accesses to last page
is causing the processor to prefetch using address above 128M stepping out
of the DDR address space.
Signed-off-by: default avatarHauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/981/

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 52ab320a
......@@ -141,6 +141,14 @@ static __init void prom_init_mem(void)
break;
}
/* Ignoring the last page when ddr size is 128M. Cached
* accesses to last page is causing the processor to prefetch
* using address above 128M stepping out of the ddr address
* space.
*/
if (mem == 0x8000000)
mem -= 0x1000;
add_memory_region(0, mem, BOOT_MEM_RAM);
}
......
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