diff options
Diffstat (limited to 'lib_m68k')
| -rw-r--r-- | lib_m68k/time.c | 120 |
1 files changed, 64 insertions, 56 deletions
diff --git a/lib_m68k/time.c b/lib_m68k/time.c index 0e4efa4..267a3cd 100644 --- a/lib_m68k/time.c +++ b/lib_m68k/time.c @@ -26,6 +26,8 @@ #include <common.h> #include <asm/mcftimer.h> +#include <asm/timer.h> +#include <asm/immap.h> #ifdef CONFIG_M5271 #include <asm/m5271.h> @@ -71,8 +73,10 @@ void udelay(unsigned long usec) 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; + 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) @@ -80,7 +84,8 @@ void udelay(unsigned long usec) } } -void mcf_timer_interrupt (void * not_used){ +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); @@ -91,10 +96,11 @@ void mcf_timer_interrupt (void * not_used){ /* reset timer */ timerp->timer_ter = MCFTIMER_TER_CAP | MCFTIMER_TER_REF; - timestamp ++; + timestamp++; } -void timer_init (void) { +void timer_init(void) +{ volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE4); volatile intctrl_t *intp = (intctrl_t *) (CFG_MBAR + MCFSIM_ICR1); @@ -104,27 +110,29 @@ void timer_init (void) { timerp->timer_tmr = MCFTIMER_TMR_DISABLE; /* initialize and enable timer 4 interrupt */ - irq_install_handler (72, mcf_timer_interrupt, 0); + 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; + timerp->timer_tmr = + (((CFG_CLK / 1000000) - + 1) << 8) | MCFTIMER_TMR_CLK1 | MCFTIMER_TMR_RESTART | + MCFTIMER_TMR_ENORI | MCFTIMER_TMR_ENABLE; } -void reset_timer (void) +void reset_timer(void) { timestamp = 0; } -ulong get_timer (ulong base) +ulong get_timer(ulong base) { return (timestamp - base); } -void set_timer (ulong t) +void set_timer(ulong t) { timestamp = t; } @@ -137,7 +145,7 @@ void udelay(unsigned long usec) volatile unsigned short *timerp; uint tmp; - timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE3); + timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE3); while (usec > 0) { if (usec > 65000) @@ -152,21 +160,21 @@ void udelay(unsigned long usec) /* 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 */ + (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); + while (timerp[MCFTIMER_PCNTR] > 0) ; } } -void timer_init (void) +void timer_init(void) { volatile unsigned short *timerp; - timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE4); + timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE4); timestamp = 0; /* Set up TIMER 4 as poll clock */ @@ -174,27 +182,27 @@ void timer_init (void) 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 */ + (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) +void set_timer(ulong t) { volatile unsigned short *timerp; - timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE4); + timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE4); timestamp = 0; timerp[MCFTIMER_PMR] = lastinc = 0; } -ulong get_timer (ulong base) +ulong get_timer(ulong base) { unsigned short now, diff; volatile unsigned short *timerp; - timerp = (volatile unsigned short *) (CFG_MBAR + MCFTIMER_BASE4); + timerp = (volatile unsigned short *)(CFG_MBAR + MCFTIMER_BASE4); now = timerp[MCFTIMER_PCNTR]; diff = -(now - lastinc); @@ -203,14 +211,13 @@ ulong get_timer (ulong base) return timestamp - base; } -void wait_ticks (unsigned long ticks) +void wait_ticks(unsigned long ticks) { - set_timer (0); - while (get_timer (0) < 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 @@ -232,8 +239,10 @@ void udelay(unsigned long usec) 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; + 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) @@ -241,7 +250,8 @@ void udelay(unsigned long usec) } } -void mcf_timer_interrupt (void * not_used){ +void mcf_timer_interrupt(void *not_used) +{ volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE2); /* check for timer 2 interrupts */ @@ -251,10 +261,11 @@ void mcf_timer_interrupt (void * not_used){ /* reset timer */ timerp->timer_ter = MCFTIMER_TER_CAP | MCFTIMER_TER_REF; - timestamp ++; + timestamp++; } -void timer_init (void) { +void timer_init(void) +{ volatile timer_t *timerp = (timer_t *) (CFG_MBAR + MCFTIMER_BASE2); timestamp = 0; @@ -263,29 +274,33 @@ void timer_init (void) { timerp->timer_tmr = MCFTIMER_TMR_DISABLE; /* initialize and enable timer 2 interrupt */ - irq_install_handler (31, mcf_timer_interrupt, 0); + 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); + 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; + timerp->timer_tmr = + (((CFG_CLK / 2000000) - + 1) << 8) | MCFTIMER_TMR_CLK1 | MCFTIMER_TMR_RESTART | + MCFTIMER_TMR_ENORI | MCFTIMER_TMR_ENABLE; } -void reset_timer (void) +void reset_timer(void) { timestamp = 0; } -ulong get_timer (ulong base) +ulong get_timer(ulong base) { return (timestamp - base); } -void set_timer (ulong t) +void set_timer(ulong t) { timestamp = t; } @@ -299,12 +314,7 @@ void set_timer (ulong t) #if !defined(CFG_TMR_BASE) || !defined(CFG_INTR_BASE) || !defined(CFG_TMRINTR_NO) || !defined(CFG_TMRINTR_MASK) # error "TMR_BASE, INTR_BASE, TMRINTR_NO or TMRINTR_MASk not defined!" #endif - -#include <asm/immap_5329.h> - -extern void dtimer_interrupt(void *not_used); -extern void dtimer_interrupt_setup(void); -extern void dtimer_interrupt_enable(void); +extern void dtimer_intr_setup(void); void udelay(unsigned long usec) { @@ -323,8 +333,8 @@ void udelay(unsigned long usec) timerp->tcn = 0; /* set period to 1 us */ timerp->tmr = - (((CFG_CLK / 1000000) - - 1) << 8) | DTIM_DTMR_CLK_DIV1 | DTIM_DTMR_FRR | DTIM_DTMR_RST_EN; + CFG_TIMER_PRESCALER | DTIM_DTMR_CLK_DIV1 | DTIM_DTMR_FRR | + DTIM_DTMR_RST_EN; start = now = timerp->tcn; while (now < start + tmp) @@ -348,7 +358,6 @@ void dtimer_interrupt(void *not_used) void timer_init(void) { volatile dtmr_t *timerp = (dtmr_t *) (CFG_TMR_BASE); - volatile int0_t *intp = (int0_t *) (CFG_INTR_BASE); timestamp = 0; @@ -358,14 +367,13 @@ void timer_init(void) /* Set up TIMER 4 as clock */ timerp->tmr = DTIM_DTMR_RST_RST; - /* initialize and enable timer 4 interrupt */ + /* initialize and enable timer interrupt */ irq_install_handler(CFG_TMRINTR_NO, dtimer_interrupt, 0); - intp->icr0[CFG_TMRINTR_NO] = CFG_TMRINTR_PRI; timerp->tcn = 0; timerp->trr = 1000; /* Interrupt every ms */ - intp->imrh0 &= ~CFG_TMRINTR_MASK; + dtimer_intr_setup(); /* set a period of 1us, set timer mode to restart and enable timer and interrupt */ timerp->tmr = CFG_TIMER_PRESCALER | DTIM_DTMR_CLK_DIV1 | @@ -470,7 +478,7 @@ unsigned long long get_ticks(void) * This function is derived from PowerPC code (timebase clock frequency). * On M68K it returns the number of timer ticks per second. */ -ulong get_tbclk (void) +ulong get_tbclk(void) { ulong tbclk; tbclk = CFG_HZ; |