diff options
Diffstat (limited to 'lib_m68k/time.c')
| -rw-r--r-- | lib_m68k/time.c | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/lib_m68k/time.c b/lib_m68k/time.c index 6c19059..28d371d 100644 --- a/lib_m68k/time.c +++ b/lib_m68k/time.c @@ -25,288 +25,12 @@ #include <common.h> -#include <asm/mcftimer.h> #include <asm/timer.h> #include <asm/immap.h> -#ifdef CONFIG_M5271 -#include <asm/m5271.h> -#include <asm/immap_5271.h> -#endif - -#ifdef CONFIG_M5272 -#include <asm/m5272.h> -#include <asm/immap_5272.h> -#endif - -#ifdef CONFIG_M5282 -#include <asm/m5282.h> -#endif - -#ifdef CONFIG_M5249 -#include <asm/m5249.h> -#include <asm/immap_5249.h> -#endif - DECLARE_GLOBAL_DATA_PTR; static ulong timestamp; -#if defined(CONFIG_M5282) || defined(CONFIG_M5271) -static unsigned short lastinc; -#endif - -#if defined(CONFIG_M5272) -/* - * We use timer 3 which is running with a period of 1 us - */ -void udelay(unsigned long usec) -{ - volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE3); - uint start, now, tmp; - - while (usec > 0) { - if (usec > 65000) - tmp = 65000; - else - tmp = usec; - usec = usec - tmp; - - /* Set up TIMER 3 as timebase clock */ - timerp->timer_tmr = MCFTIMER_TMR_DISABLE; - timerp->timer_tcn = 0; - /* set period to 1 us */ - timerp->timer_tmr = - (((CFG_CLK / 1000000) - - 1) << 8) | MCFTIMER_TMR_CLK1 | MCFTIMER_TMR_FREERUN | - MCFTIMER_TMR_ENABLE; - - start = now = timerp->timer_tcn; - while (now < start + tmp) - now = timerp->timer_tcn; - } -} - -void mcf_timer_interrupt(void *not_used) -{ - volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE4); - volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1); - - /* check for timer 4 interrupts */ - if ((intp->int_isr & 0x01000000) != 0) { - return; - } - - /* reset timer */ - timerp->timer_ter = MCFTIMER_TER_CAP | MCFTIMER_TER_REF; - timestamp++; -} - -void timer_init(void) -{ - volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE4); - volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1); - - timestamp = 0; - - /* Set up TIMER 4 as clock */ - timerp->timer_tmr = MCFTIMER_TMR_DISABLE; - - /* initialize and enable timer 4 interrupt */ - irq_install_handler(72, mcf_timer_interrupt, 0); - intp->int_icr1 |= 0x0000000d; - - timerp->timer_tcn = 0; - timerp->timer_trr = 1000; /* Interrupt every ms */ - /* set a period of 1us, set timer mode to restart and enable timer and interrupt */ - timerp->timer_tmr = - (((CFG_CLK / 1000000) - - 1) << 8) | MCFTIMER_TMR_CLK1 | MCFTIMER_TMR_RESTART | - MCFTIMER_TMR_ENORI | MCFTIMER_TMR_ENABLE; -} - -void reset_timer(void) -{ - timestamp = 0; -} - -ulong get_timer(ulong base) -{ - return (timestamp - base); -} - -void set_timer(ulong t) -{ - timestamp = t; -} -#endif - -#if defined(CONFIG_M5282) || defined(CONFIG_M5271) - -void udelay(unsigned long usec) -{ - volatile unsigned short *timerp; - uint tmp; - - timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE3); - - while (usec > 0) { - if (usec > 65000) - tmp = 65000; - else - tmp = usec; - usec = usec - tmp; - - /* Set up TIMER 3 as timebase clock */ - timerp[MCFTIMER_PCSR] = MCFTIMER_PCSR_OVW; - timerp[MCFTIMER_PMR] = 0; - /* set period to 1 us */ - timerp[MCFTIMER_PCSR] = -#ifdef CONFIG_M5271 - (6 << 8) | MCFTIMER_PCSR_EN | MCFTIMER_PCSR_OVW; -#else /* !CONFIG_M5271 */ - (5 << 8) | MCFTIMER_PCSR_EN | MCFTIMER_PCSR_OVW; -#endif /* CONFIG_M5271 */ - - timerp[MCFTIMER_PMR] = tmp; - while (timerp[MCFTIMER_PCNTR] > 0) ; - } -} - -void timer_init(void) -{ - volatile unsigned short *timerp; - - timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE4); - timestamp = 0; - - /* Set up TIMER 4 as poll clock */ - timerp[MCFTIMER_PCSR] = MCFTIMER_PCSR_OVW; - timerp[MCFTIMER_PMR] = lastinc = 0; - timerp[MCFTIMER_PCSR] = -#ifdef CONFIG_M5271 - (6 << 8) | MCFTIMER_PCSR_EN | MCFTIMER_PCSR_OVW; -#else /* !CONFIG_M5271 */ - (5 << 8) | MCFTIMER_PCSR_EN | MCFTIMER_PCSR_OVW; -#endif /* CONFIG_M5271 */ -} - -void set_timer(ulong t) -{ - volatile unsigned short *timerp; - - timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE4); - timestamp = 0; - timerp[MCFTIMER_PMR] = lastinc = 0; -} - -ulong get_timer(ulong base) -{ - unsigned short now, diff; - volatile unsigned short *timerp; - - timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE4); - now = timerp[MCFTIMER_PCNTR]; - diff = -(now - lastinc); - - timestamp += diff; - lastinc = now; - return timestamp - base; -} - -void wait_ticks(unsigned long ticks) -{ - set_timer(0); - while (get_timer(0) < ticks) ; -} -#endif - -#if defined(CONFIG_M5249) -/* - * We use timer 1 which is running with a period of 1 us - */ -void udelay(unsigned long usec) -{ - volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE1); - uint start, now, tmp; - - while (usec > 0) { - if (usec > 65000) - tmp = 65000; - else - tmp = usec; - usec = usec - tmp; - - /* Set up TIMER 1 as timebase clock */ - timerp->timer_tmr = MCFTIMER_TMR_DISABLE; - timerp->timer_tcn = 0; - /* set period to 1 us */ - /* on m5249 the system clock is (cpu_clk / 2) -> divide by 2000000 */ - timerp->timer_tmr = - (((CFG_CLK / 2000000) - - 1) << 8) | MCFTIMER_TMR_CLK1 | MCFTIMER_TMR_FREERUN | - MCFTIMER_TMR_ENABLE; - - start = now = timerp->timer_tcn; - while (now < start + tmp) - now = timerp->timer_tcn; - } -} - -void mcf_timer_interrupt(void *not_used) -{ - volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE2); - - /* check for timer 2 interrupts */ - if ((mbar_readLong(MCFSIM_IPR) & 0x00000400) == 0) { - return; - } - - /* reset timer */ - timerp->timer_ter = MCFTIMER_TER_CAP | MCFTIMER_TER_REF; - timestamp++; -} - -void timer_init(void) -{ - volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE2); - - timestamp = 0; - - /* Set up TIMER 2 as clock */ - timerp->timer_tmr = MCFTIMER_TMR_DISABLE; - - /* initialize and enable timer 2 interrupt */ - irq_install_handler(31, mcf_timer_interrupt, 0); - mbar_writeLong(MCFSIM_IMR, mbar_readLong(MCFSIM_IMR) & ~0x00000400); - mbar_writeByte(MCFSIM_TIMER2ICR, - MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | - MCFSIM_ICR_PRI3); - - timerp->timer_tcn = 0; - timerp->timer_trr = 1000; /* Interrupt every ms */ - /* set a period of 1us, set timer mode to restart and enable timer and interrupt */ - /* on m5249 the system clock is (cpu_clk / 2) -> divide by 2000000 */ - timerp->timer_tmr = - (((CFG_CLK / 2000000) - - 1) << 8) | MCFTIMER_TMR_CLK1 | MCFTIMER_TMR_RESTART | - MCFTIMER_TMR_ENORI | MCFTIMER_TMR_ENABLE; -} - -void reset_timer(void) -{ - timestamp = 0; -} - -ulong get_timer(ulong base) -{ - return (timestamp - base); -} - -void set_timer(ulong t) -{ - timestamp = t; -} -#endif #if defined(CONFIG_MCFTMR) #ifndef CFG_UDELAY_BASE |