x86: Support adding coreboot timestanps to bootstage

Coreboot provides a lot of useful timing information. Provide a facility
to add this to bootstage on start-up.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/x86/include/asm/arch-coreboot/timestamp.h b/arch/x86/include/asm/arch-coreboot/timestamp.h
index d104912e06..fcfc1d5442 100644
--- a/arch/x86/include/asm/arch-coreboot/timestamp.h
+++ b/arch/x86/include/asm/arch-coreboot/timestamp.h
@@ -49,4 +49,11 @@ void timestamp_init(void);
 void timestamp_add(enum timestamp_id id, uint64_t ts_time);
 void timestamp_add_now(enum timestamp_id id);
 
+/**
+ * timestamp_add_to_bootstage - Add important coreboot timestamps to bootstage
+ *
+ * @return 0 if ok, -1 if no timestamps were found
+ */
+int timestamp_add_to_bootstage(void);
+
 #endif