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authorFlorian Fainelli <florian@openwrt.org>2010-02-22 09:43:37 +0000
committerFlorian Fainelli <florian@openwrt.org>2010-02-22 09:43:37 +0000
commit9067ed76092f5c698b672f6d40d369be87022af4 (patch)
tree201d4bb8ad7ab461c944c03285e3f0b4231eb338 /target/linux
parent243e190675b029d0d7de10abb9bd6af71e7e3f3f (diff)
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add missing patch to arch/mips/kernel/traps.c to allow ar7 to setup its handler correctly (#6722)
SVN-Revision: 19812
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ar7/patches-2.6.32/100-board_support.patch28
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/ar7/patches-2.6.32/100-board_support.patch b/target/linux/ar7/patches-2.6.32/100-board_support.patch
new file mode 100644
index 0000000000..caa441eafc
--- /dev/null
+++ b/target/linux/ar7/patches-2.6.32/100-board_support.patch
@@ -0,0 +1,28 @@
+--- a/arch/mips/kernel/traps.c
++++ b/arch/mips/kernel/traps.c
+@@ -1256,9 +1256,22 @@ void *set_except_vector(int n, void *add
+
+ exception_handlers[n] = handler;
+ if (n == 0 && cpu_has_divec) {
+- *(u32 *)(ebase + 0x200) = 0x08000000 |
+- (0x03ffffff & (handler >> 2));
+- local_flush_icache_range(ebase + 0x200, ebase + 0x204);
++ if ((handler ^ (ebase + 4)) & 0xfc000000) {
++ /* lui k0, 0x0000 */
++ *(u32 *)(ebase + 0x200) = 0x3c1a0000 | (handler >> 16);
++ /* ori k0, 0x0000 */
++ *(u32 *)(ebase + 0x204) =
++ 0x375a0000 | (handler & 0xffff);
++ /* jr k0 */
++ *(u32 *)(ebase + 0x208) = 0x03400008;
++ /* nop */
++ *(u32 *)(ebase + 0x20C) = 0x00000000;
++ flush_icache_range(ebase + 0x200, ebase + 0x210);
++ } else {
++ *(u32 *)(ebase + 0x200) =
++ 0x08000000 | (0x03ffffff & (handler >> 2));
++ flush_icache_range(ebase + 0x200, ebase + 0x204);
++ }
+ }
+ return (void *)old_handler;
+ }