aboutsummaryrefslogtreecommitdiff
path: root/arch/blackfin/kernel
diff options
context:
space:
mode:
authorRobin Getz <rgetz@blackfin.uclinux.org>2008-10-09 17:06:32 +0800
committerBryan Wu <cooloney@kernel.org>2008-10-09 17:06:32 +0800
commit1d5ff7e27d2ca30cd3f61afd353b03dd67330818 (patch)
treeceadc8dd11d69c438eca73285c1d8faab7b58977 /arch/blackfin/kernel
parent55f2feae3a1e075d9b4b0e73a6024f3e25717878 (diff)
Blackfin arch: Fix bug - HW Errors never recover on BF548
The kernel does not properly clear the EBIU Error Master (EBIU_ERRMST) Register on BF548, which causes the kernel to panic. We need to make sure that we clear the EBIU_ERRMST (necessary on BF54x) Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r--arch/blackfin/kernel/traps.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 1a3c4daf557..709c247b701 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -1025,8 +1025,19 @@ void show_regs(struct pt_regs *fp)
printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\t\t%s\n", print_tainted());
printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n",
(long)fp->seqstat, fp->ipend, fp->syscfg);
- printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n",
- (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14);
+ if ((fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) {
+ printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n",
+ (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14);
+#ifdef EBIU_ERRMST
+ /* If the error was from the EBIU, print it out */
+ if (bfin_read_EBIU_ERRMST() & CORE_ERROR) {
+ printk(KERN_NOTICE " EBIU Error Reason : 0x%04x\n",
+ bfin_read_EBIU_ERRMST());
+ printk(KERN_NOTICE " EBIU Error Address : 0x%08x\n",
+ bfin_read_EBIU_ERRADD());
+ }
+#endif
+ }
printk(KERN_NOTICE " EXCAUSE : 0x%lx\n",
fp->seqstat & SEQSTAT_EXCAUSE);
for (i = 6; i <= 15 ; i++) {