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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>
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17
lib/time.c
17
lib/time.c
@ -36,6 +36,23 @@ unsigned long notrace timer_read_counter(void)
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return readl(CONFIG_SYS_TIMER_COUNTER);
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#endif
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}
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ulong timer_get_boot_us(void)
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{
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ulong count = timer_read_counter();
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#if CONFIG_SYS_TIMER_RATE == 1000000
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return count;
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#elif CONFIG_SYS_TIMER_RATE > 1000000
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return lldiv(count, CONFIG_SYS_TIMER_RATE / 1000000);
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#elif defined(CONFIG_SYS_TIMER_RATE)
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return (unsigned long long)count * 1000000 / CONFIG_SYS_TIMER_RATE;
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#else
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/* Assume the counter is in microseconds */
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return count;
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#endif
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}
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#else
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extern unsigned long __weak timer_read_counter(void);
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#endif
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