diff options
| author | Simon Glass | 2017-05-22 05:05:22 -0600 |
|---|---|---|
| committer | Tom Rini | 2017-06-05 14:13:03 -0400 |
| commit | 9fb34b01f7757ed772b77dd90e463c6e7499fef8 (patch) | |
| tree | 7b96448ed63e93432c87c282ceb95063990a0d54 /lib | |
| parent | 9cb5eaf2cfb7ceb267fc10c743b69a57a1141bf7 (diff) | |
bootstage: Provide a default timer function
If CONFIG_SYS_TIMER_COUNTER is used we can provide a default microsecond
timer implementation.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/time.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/time.c b/lib/time.c index 3c49243e6a1..aed1a091f27 100644 --- a/lib/time.c +++ b/lib/time.c @@ -36,6 +36,23 @@ unsigned long notrace timer_read_counter(void) return readl(CONFIG_SYS_TIMER_COUNTER); #endif } + +ulong timer_get_boot_us(void) +{ + ulong count = timer_read_counter(); + +#if CONFIG_SYS_TIMER_RATE == 1000000 + return count; +#elif CONFIG_SYS_TIMER_RATE > 1000000 + return lldiv(count, CONFIG_SYS_TIMER_RATE / 1000000); +#elif defined(CONFIG_SYS_TIMER_RATE) + return (unsigned long long)count * 1000000 / CONFIG_SYS_TIMER_RATE; +#else + /* Assume the counter is in microseconds */ + return count; +#endif +} + #else extern unsigned long __weak timer_read_counter(void); #endif |