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authorhauke <hauke@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-11-13 20:32:47 +0000
committerhauke <hauke@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-11-13 20:32:47 +0000
commit3fb97947af0248bba15050c336496f6dace4ff2d (patch)
treeef7db535b0aa0df328f81587cedc76239df26ffb /target/linux/brcm-2.4/files/arch
parentfa989620af714ced8136c5a91c2495119f0ce0a3 (diff)
[brcm47xx] fix problem with 128MB ram.
This patch is out of broadcoms official source code git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18413 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm-2.4/files/arch')
-rw-r--r--target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c
index be628da62..f635b4a6c 100644
--- a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c
+++ b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c
@@ -31,6 +31,15 @@ prom_init(int argc, const char **argv)
*(unsigned long *)(prom_init))
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);
}