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x86: Support adding coreboot timestanps to bootstage

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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>
This commit is contained in:
Simon Glass 2013-04-17 16:13:47 +00:00
parent 04dbf77d62
commit 5397d8058c
2 changed files with 45 additions and 0 deletions
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38
arch/x86/cpu/coreboot/timestamp.c
View File

@ -61,3 +61,41 @@ void timestamp_add_now(enum timestamp_id id)
{
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;
}

7
arch/x86/include/asm/arch-coreboot/timestamp.h
View File

@ -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