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authorHauke Mehrtens <hauke@hauke-m.de>2009-11-13 20:32:47 +0000
committerHauke Mehrtens <hauke@hauke-m.de>2009-11-13 20:32:47 +0000
commit30f859403a53ea5d51867065408a379acea6f1b4 (patch)
tree9897294142072297dba5535062c20b7b90bde5bd /target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch
parent00808aaff32e58946f5da370068fd875aa3ae5c8 (diff)
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fix problem with 128MB ram.
This patch is out of broadcoms official source code SVN-Revision: 18413
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch')
-rw-r--r--target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch17
1 files changed, 17 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch b/target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch
new file mode 100644
index 0000000000..e54e3de409
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch
@@ -0,0 +1,17 @@
+--- a/arch/mips/bcm47xx/prom.c
++++ b/arch/mips/bcm47xx/prom.c
+@@ -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);
+ }
+