* Nothing really to do with interrupts, just starts up a counter.
*/
-#define TIMER_CLOCK (V_SCLK / (2 << CONFIG_SYS_PTV))
-#define TIMER_LOAD_VAL 0xffffffff
+#define TIMER_CLOCK (V_SCLK / (2 << CONFIG_SYS_PTV))
+#define TIMER_OVERFLOW_VAL 0xffffffff
+#define TIMER_LOAD_VAL 0
int timer_init(void)
{
writel((CONFIG_SYS_PTV << 2) | TCLR_PRE | TCLR_AR | TCLR_ST,
&timer_base->tclr);
- reset_timer_masked(); /* init the timestamp and lastinc value */
+ /* reset time, capture current incrementer value time */
+ gd->lastinc = readl(&timer_base->tcrr) / (TIMER_CLOCK / CONFIG_SYS_HZ);
+ gd->tbl = 0; /* start "advancing" time stamp from 0 */
return 0;
}
/*
* timer without interrupts
*/
-void reset_timer(void)
-{
- reset_timer_masked();
-}
-
ulong get_timer(ulong base)
{
return get_timer_masked() - base;
}
-void set_timer(ulong t)
-{
- gd->tbl = t;
-}
-
/* delay x useconds */
void __udelay(unsigned long usec)
{
while (tmo > 0) {
now = readl(&timer_base->tcrr);
if (last > now) /* count up timer overflow */
- tmo -= TIMER_LOAD_VAL - last + now;
+ tmo -= TIMER_OVERFLOW_VAL - last + now + 1;
else
tmo -= now - last;
last = now;
}
}
-void reset_timer_masked(void)
-{
- /* reset time, capture current incrementer value time */
- gd->lastinc = readl(&timer_base->tcrr) / (TIMER_CLOCK / CONFIG_SYS_HZ);
- gd->tbl = 0; /* start "advancing" time stamp from 0 */
-}
-
ulong get_timer_masked(void)
{
/* current tick value */