drivers/elog/elog.c: Create extended event

For debug reasons, sometimes you not only want to log an event, but also
some extra information that would help debugging. Create an extended event
reporting event type with a dword complement, and define extended events
for failing to enter S3 due to pending wake event (one for pm1 and one for
gpe0).

BUG=b:111100312
TEST=Add a fake pending wake event, build and boot grunt, see the event in
eventlog.txt.

Change-Id: I3e8df0953db09197d6d8145b0fc1e583379deaa5
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/28246
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/drivers/elog/elog.c b/src/drivers/elog/elog.c
index 6fc4053a4f..d3c01c2d58 100644
--- a/src/drivers/elog/elog.c
+++ b/src/drivers/elog/elog.c
@@ -933,6 +933,17 @@ int elog_add_event_wake(u8 source, u32 instance)
 	return elog_add_event_raw(ELOG_TYPE_WAKE_SOURCE, &wake, sizeof(wake));
 }
 
+int elog_add_extended_event(u8 type, u32 complement)
+{
+	struct elog_event_extended_event event = {
+		.event_type = type,
+		.event_complement = complement
+	};
+	return elog_add_event_raw(ELOG_TYPE_EXTENDED_EVENT,
+				  &event,
+				  sizeof(event));
+}
+
 /* Make sure elog_init() runs at least once to log System Boot event. */
 static void elog_bs_init(void *unused) { elog_init(); }
 BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY, elog_bs_init, NULL);