X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=lib%2Ftime.c;h=477440de16faa3319852a6119935628f63aa8531;hb=1c9fe7ab6b3bf86cf99c96f7d212cdc45fb9d11a;hp=68b8ff4190733a3e86edbcef4197bd9669565c2b;hpb=c2120fbfbc4d1f6953228f86be8bdbf38bacfdab;p=karo-tx-uboot.git

diff --git a/lib/time.c b/lib/time.c
index 68b8ff4190..477440de16 100644
--- a/lib/time.c
+++ b/lib/time.c
@@ -7,11 +7,91 @@
 
 #include <common.h>
 #include <watchdog.h>
+#include <div64.h>
+#include <asm/io.h>
 
 #ifndef CONFIG_WD_PERIOD
-# define CONFIG_WD_PERIOD	(10 * 1000 * 1000)	/* 10 seconds default*/
+# define CONFIG_WD_PERIOD	(10 * 1000 * 1000)	/* 10 seconds default */
 #endif
 
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SYS_TIMER_RATE
+/* Returns tick rate in ticks per second */
+ulong notrace get_tbclk(void)
+{
+	return CONFIG_SYS_TIMER_RATE;
+}
+#endif
+
+#ifdef CONFIG_SYS_TIMER_COUNTER
+unsigned long notrace timer_read_counter(void)
+{
+#ifdef CONFIG_SYS_TIMER_COUNTS_DOWN
+	return ~readl(CONFIG_SYS_TIMER_COUNTER);
+#else
+	return readl(CONFIG_SYS_TIMER_COUNTER);
+#endif
+}
+#else
+extern unsigned long __weak timer_read_counter(void);
+#endif
+
+uint64_t __weak notrace get_ticks(void)
+{
+	unsigned long now = timer_read_counter();
+
+	/* increment tbu if tbl has rolled over */
+	if (now < gd->timebase_l)
+		gd->timebase_h++;
+	gd->timebase_l = now;
+	return ((uint64_t)gd->timebase_h << 32) | gd->timebase_l;
+}
+
+/* Returns time in milliseconds */
+static uint64_t notrace tick_to_time(uint64_t tick)
+{
+	ulong div = get_tbclk();
+
+	tick *= CONFIG_SYS_HZ;
+	do_div(tick, div);
+	return tick;
+}
+
+int __weak timer_init(void)
+{
+	return 0;
+}
+
+/* Returns time in milliseconds */
+ulong __weak get_timer(ulong base)
+{
+	return tick_to_time(get_ticks()) - base;
+}
+
+unsigned long __weak notrace timer_get_us(void)
+{
+	return tick_to_time(get_ticks() * 1000);
+}
+
+static uint64_t usec_to_tick(unsigned long usec)
+{
+	uint64_t tick = usec;
+	tick *= get_tbclk();
+	do_div(tick, 1000000);
+	return tick;
+}
+
+void __weak __udelay(unsigned long usec)
+{
+	uint64_t tmp;
+
+	tmp = get_ticks() + usec_to_tick(usec);	/* get current timestamp */
+
+	while (get_ticks() < tmp+1)	/* loop till event */
+		 /*NOP*/;
+}
+
 /* ------------------------------------------------------------------------- */
 
 void udelay(unsigned long usec)