[coreboot-gerrit] New patch to review for coreboot: 98849d1 elog: Check for successful flash erase in elog_shrink
Stefan Reinauer (stefan.reinauer@coreboot.org)
gerrit at coreboot.org
Tue Nov 19 01:19:31 CET 2013
Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4186
-gerrit
commit 98849d12653fb68e74eeb561956a6f56f05b6139
Author: Duncan Laurie <dlaurie at chromium.org>
Date: Thu May 23 07:23:09 2013 -0700
elog: Check for successful flash erase in elog_shrink
A parrot device with a bad flash part has been seen to hang
in the elog_shrink code becuase the flash was not successfully
erased and it gets stuck in a loop trying to shrink the log
and then add an event.
Change-Id: I8bb13dbadd293f9d892f322e213c9255c8e9acb3
Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/56405
Reviewed-by: Aaron Durbin <adurbin at chromium.org>
---
src/drivers/elog/elog.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/drivers/elog/elog.c b/src/drivers/elog/elog.c
index 6de5123..bc72e97 100644
--- a/src/drivers/elog/elog.c
+++ b/src/drivers/elog/elog.c
@@ -661,6 +661,12 @@ static int elog_shrink(void)
/* Erase flash area */
elog_flash_erase_area();
+ /* Ensure the area was successfully erased */
+ if (elog_get_flash()->next_event_offset >= CONFIG_ELOG_FULL_THRESHOLD) {
+ printk(BIOS_ERR, "ELOG: Flash area was not erased!\n");
+ return -1;
+ }
+
/* Write new flash area */
elog_prepare_empty(elog_get_flash(),
(u8*)elog_get_event_base(mem, offset),
@@ -839,7 +845,8 @@ int elog_init(void)
/* Shrink the log if we are getting too full */
if (elog_get_mem()->next_event_offset >= CONFIG_ELOG_FULL_THRESHOLD)
- elog_shrink();
+ if (elog_shrink() < 0)
+ return -1;
#if CONFIG_ELOG_BOOT_COUNT && !defined(__SMM__)
/* Log boot count event except in S3 resume */
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