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authorflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-02-22 09:43:37 +0000
committerflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-02-22 09:43:37 +0000
commit27779065aaf60d846d0067d57d7039cff998e963 (patch)
treea8733e1de69c8a70b16a2d40022d54bf5debd145 /target
parentdf67b629403e12e1169f710706b25c8ca4c3abcf (diff)
[ar7] add missing patch to arch/mips/kernel/traps.c to allow ar7 to setup its handler correctly (#6722)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19812 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-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;
+ }