#define TIMER_LOAD_VAL 0
/* macro to read the 32 bit timer */
-#define READ_TIMER (*((volatile ulong*)(CFG_TIMERBASE+TCRR)))
+#define READ_TIMER (*((volatile ulong *)(CONFIG_SYS_TIMERBASE+TCRR)))
static ulong timestamp;
static ulong lastinc;
-/*
- * nothing really to do with interrupts, just starts up a counter.
- */
-int interrupt_init(void)
+/* nothing really to do with interrupts, just starts up a counter. */
+int interrupt_init (void)
{
int32_t val;
/* Start the counter ticking up */
- /* reload value on overflow*/
- *((int32_t *) (CFG_TIMERBASE + TLDR)) = TIMER_LOAD_VAL;
- /* mask to enable timer*/
- val = (CFG_PVT << 2) | BIT5 | BIT1 | BIT0;
- *((int32_t *) (CFG_TIMERBASE + TCLR)) = val; /* start timer */
+ *((int32_t *) (CONFIG_SYS_TIMERBASE + TLDR)) = TIMER_LOAD_VAL; /* reload value on overflow*/
+ val = (CONFIG_SYS_PTV << 2) | BIT5 | BIT1 | BIT0; /* mask to enable timer*/
+ *((int32_t *) (CONFIG_SYS_TIMERBASE + TCLR)) = val; /* start timer */
reset_timer_masked(); /* init the timestamp and lastinc value */
/*
* timer without interrupts
*/
-void reset_timer(void)
+void reset_timer (void)
{
- reset_timer_masked();
+ reset_timer_masked ();
}
-ulong get_timer(ulong base)
+ulong get_timer (ulong base)
{
- return get_timer_masked() - base;
+ return get_timer_masked () - base;
}
-void set_timer(ulong t)
+void set_timer (ulong t)
{
timestamp = t;
}
/* delay x useconds AND perserve advance timstamp value */
-void udelay(unsigned long usec)
+void udelay (unsigned long usec)
{
ulong tmo, tmp;
- /* if "big" number, spread normalization to seconds */
- if (usec >= 1000) {
- /* start to normalize for usec to ticks per sec */
- tmo = usec / 1000;
- /* find number of "ticks" to wait to achieve target */
- tmo *= CFG_HZ;
- /* finish normalize. */
- tmo /= 1000;
- } else {
- /* else small number, don't kill it prior to HZ multiply */
- tmo = usec * CFG_HZ;
+ if (usec >= 1000) { /* if "big" number, spread normalization to seconds */
+ tmo = usec / 1000; /* start to normalize for usec to ticks per sec */
+ tmo *= CONFIG_SYS_HZ; /* find number of "ticks" to wait to achieve target */
+ tmo /= 1000; /* finish normalize. */
+ } else { /* else small number, don't kill it prior to HZ multiply */
+ tmo = usec * CONFIG_SYS_HZ;
tmo /= (1000*1000);
}
- /* get current timestamp */
- tmp = get_timer(0);
- if ((tmo + tmp + 1) < tmp)
- /* setting this forward will roll time stamp */
- /* reset "advancing" timestamp to 0, set lastinc value */
- reset_timer_masked();
+
+ tmp = get_timer (0); /* get current timestamp */
+ if ( (tmo + tmp + 1) < tmp )/* if setting this forward will roll time stamp */
+ reset_timer_masked (); /* reset "advancing" timestamp to 0, set lastinc value */
else
- /* else, set advancing stamp wake up time */
- tmo += tmp;
- while (get_timer_masked() < tmo)/* loop till event */
+ tmo += tmp; /* else, set advancing stamp wake up time */
+ while (get_timer_masked () < tmo)/* loop till event */
/*NOP*/;
}
-void reset_timer_masked(void)
+void reset_timer_masked (void)
{
/* reset time */
- /* capture current incrementer value time */
- lastinc = READ_TIMER;
- /* start "advancing" time stamp from 0 */
- timestamp = 0;
+ lastinc = READ_TIMER; /* capture current incrementer value time */
+ timestamp = 0; /* start "advancing" time stamp from 0 */
}
-ulong get_timer_masked(void)
+ulong get_timer_masked (void)
{
- ulong now = READ_TIMER; /* current tick value */
+ ulong now = READ_TIMER; /* current tick value */
- /* normal mode (non roll) */
- if (now >= lastinc)
- /* move stamp forward with absolute diff ticks */
- timestamp += (now - lastinc);
- else
- /* we have rollover of incrementer */
+ if (now >= lastinc) /* normal mode (non roll) */
+ timestamp += (now - lastinc); /* move stamp fordward with absoulte diff ticks */
+ else /* we have rollover of incrementer */
timestamp += (0xFFFFFFFF - lastinc) + now;
lastinc = now;
return timestamp;
}
/* waits specified delay value and resets timestamp */
-void udelay_masked(unsigned long usec)
+void udelay_masked (unsigned long usec)
{
ulong tmo;
ulong endtime;
signed long diff;
- if (usec >= 1000) {
- /* "big" number, spread normalization to seconds */
- /* start to normalize for usec to ticks per sec */
- tmo = usec / 1000;
- /* find number of "ticks" to wait to achieve target */
- tmo *= CFG_HZ;
- tmo /= 1000;/* finish normalize. */
- } else {
- /* else small number, don't kill it prior to HZ multiply */
- tmo = usec * CFG_HZ;
+ if (usec >= 1000) { /* if "big" number, spread normalization to seconds */
+ tmo = usec / 1000; /* start to normalize for usec to ticks per sec */
+ tmo *= CONFIG_SYS_HZ; /* find number of "ticks" to wait to achieve target */
+ tmo /= 1000; /* finish normalize. */
+ } else { /* else small number, don't kill it prior to HZ multiply */
+ tmo = usec * CONFIG_SYS_HZ;
tmo /= (1000*1000);
}
- endtime = get_timer_masked() + tmo;
+ endtime = get_timer_masked () + tmo;
do {
- ulong now = get_timer_masked();
+ ulong now = get_timer_masked ();
diff = endtime - now;
} while (diff >= 0);
}
* This function is derived from PowerPC code (timebase clock frequency).
* On ARM it returns the number of timer ticks per second.
*/
-ulong get_tbclk(void)
+ulong get_tbclk (void)
{
ulong tbclk;
- tbclk = CFG_HZ;
+ tbclk = CONFIG_SYS_HZ;
return tbclk;
}
projects / platform / kernel / u-boot.git / blobdiff