From 9fb34b01f7757ed772b77dd90e463c6e7499fef8 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 22 May 2017 05:05:22 -0600 Subject: [PATCH] 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 --- lib/time.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/lib/time.c b/lib/time.c index 3c49243..aed1a09 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 -- 2.7.4