elog: Stream line the elog driver.

The elog driver's design was a bit more elaborate than it really needed to be
since it no longer had to keep track of multiple copies of the log in flash
and also in memory. This change streamlines it by removing unnecessary
compartmentalization of some bits of code, and some variables which tracked
the last entry added which were never used.

Built and booted on Link. Ran mosys eventlog list. Added 2000 events to
the event log and ran mosys eventlog list again. Cleared the log by echoing 1
into /sys/firmware/gsmi/clear_eventlog and ran mosys eventlog list.

Change-Id: I7d4cdebf2f5b1f6bb1fc70e65eca18f71b124b18
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/49309
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/4244
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/src/drivers/elog/elog_internal.h b/src/drivers/elog/elog_internal.h
index 799e7e2311..e83df5f089 100644
--- a/src/drivers/elog/elog_internal.h
+++ b/src/drivers/elog/elog_internal.h
@@ -76,8 +76,6 @@ struct elog_descriptor {
 	u16                     total_size;
 	u16			data_size;
 	u16			next_event_offset;
-	u16			last_event_offset;
-	u16			last_event_size;
 	u16			event_count;
 };