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-rw-r--r--lib_ppc/extable.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/lib_ppc/extable.c b/lib_ppc/extable.c
index d92f142..fe856ff 100644
--- a/lib_ppc/extable.c
+++ b/lib_ppc/extable.c
@@ -37,6 +37,8 @@
* on our cache or tlb entries.
*/
+DECLARE_GLOBAL_DATA_PTR;
+
struct exception_table_entry
{
unsigned long insn, fixup;
@@ -55,10 +57,22 @@ search_one_table(const struct exception_table_entry *first,
long diff;
mid = (last - first) / 2 + first;
- diff = mid->insn - value;
- if (diff == 0)
- return mid->fixup;
- else if (diff < 0)
+ if (mid > CFG_MONITOR_BASE) {
+ /* exception occurs in FLASH, before u-boot relocation.
+ * No relocation offset is needed.
+ */
+ diff = mid->insn - value;
+ if (diff == 0)
+ return mid->fixup;
+ } else {
+ /* exception occurs in RAM, after u-boot relocation.
+ * A relocation offset should be added.
+ */
+ diff = (mid->insn + gd->reloc_off) - value;
+ if (diff == 0)
+ return (mid->fixup + gd->reloc_off);
+ }
+ if (diff < 0)
first = mid+1;
else
last = mid-1;
@@ -75,8 +89,11 @@ search_exception_table(unsigned long addr)
/* There is only the kernel to search. */
ret = search_one_table(__start___ex_table, __stop___ex_table-1, addr);
+ /* if the serial port does not hang in exception, printf can be used */
+#if !defined(CFG_SERIAL_HANG_IN_EXCEPTION)
if (ex_tab_message)
printf("Bus Fault @ 0x%08lx, fixup 0x%08lx\n", addr, ret);
+#endif
if (ret) return ret;
return 0;