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>
diff --git a/arch/x86/cpu/coreboot/timestamp.c b/arch/x86/cpu/coreboot/timestamp.c
index d26718e..bd3558a 100644
--- a/arch/x86/cpu/coreboot/timestamp.c
+++ b/arch/x86/cpu/coreboot/timestamp.c
@@ -61,3 +61,41 @@
{
timestamp_add(id, rdtsc());
}
+
+int timestamp_add_to_bootstage(void)
+{
+ uint i;
+
+ if (!ts_table)
+ return -1;
+
+ for (i = 0; i < ts_table->num_entries; i++) {
+ struct timestamp_entry *tse = &ts_table->entries[i];
+ const char *name = NULL;
+
+ switch (tse->entry_id) {
+ case TS_START_ROMSTAGE:
+ name = "start-romstage";
+ break;
+ case TS_BEFORE_INITRAM:
+ name = "before-initram";
+ break;
+ case TS_DEVICE_INITIALIZE:
+ name = "device-initialize";
+ break;
+ case TS_DEVICE_DONE:
+ name = "device-done";
+ break;
+ case TS_SELFBOOT_JUMP:
+ name = "selfboot-jump";
+ break;
+ }
+ if (name) {
+ bootstage_add_record(0, name, BOOTSTAGEF_ALLOC,
+ tse->entry_stamp /
+ get_tbclk_mhz());
+ }
+ }
+
+ return 0;
+}
diff --git a/arch/x86/include/asm/arch-coreboot/timestamp.h b/arch/x86/include/asm/arch-coreboot/timestamp.h
index d104912..fcfc1d5 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_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