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>

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>
Simon Glass · Tom Rini
1 parent 9cb5eaf2cf
Showing 1 changed file with 17 additions and 0 deletions Side-by-side Diff
lib/time.c
@@ -36,6 +36,23 @@
 	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
...	...	@@ -36,6 +36,23 @@
36	36	return readl(CONFIG_SYS_TIMER_COUNTER);
37	37	#endif
38	38	}
	39	+
	40	+ulong timer_get_boot_us(void)
	41	+{
	42	+ ulong count = timer_read_counter();
	43	+
	44	+#if CONFIG_SYS_TIMER_RATE == 1000000
	45	+ return count;
	46	+#elif CONFIG_SYS_TIMER_RATE > 1000000
	47	+ return lldiv(count, CONFIG_SYS_TIMER_RATE / 1000000);
	48	+#elif defined(CONFIG_SYS_TIMER_RATE)
	49	+ return (unsigned long long)count * 1000000 / CONFIG_SYS_TIMER_RATE;
	50	+#else
	51	+ /* Assume the counter is in microseconds */
	52	+ return count;
	53	+#endif
	54	+}
	55	+
39	56	#else
40	57	extern unsigned long __weak timer_read_counter(void);
41	58	#endif