diff options
| author | TsiChung Liew <Tsi-Chung.Liew@freescale.com> | 2007-06-18 13:50:13 -0500 | 
|---|---|---|
| committer | John Rigby <jrigby@freescale.com> | 2007-06-18 15:17:56 -0600 | 
| commit | 8e585f02f82c17cc66cd229dbf0fd3066bbbf658 (patch) | |
| tree | 9483ff1f96ab9208eeac92101a5c6db855fcd2ee /lib_m68k/time.c | |
| parent | 9912121f7ed804ea58fd62f3f230b5dcfc357d88 (diff) | |
| download | olio-uboot-2014.01-8e585f02f82c17cc66cd229dbf0fd3066bbbf658.tar.xz olio-uboot-2014.01-8e585f02f82c17cc66cd229dbf0fd3066bbbf658.zip | |
Added M5329AFEE and M5329BFEE Platforms
Added board/freescale/m5329evb, cpu/mcf532x, drivers/net,
drivers/serial,  immap_5329.h, m5329.h, mcfrtc.h,
include/configs/M5329EVB.h, lib_m68k/interrupts.c, and
rtc/mcfrtc.c
Modified CREDITS, MAKEFILE, Makefile, README, common/cmd_bdinfo.c,
common/cmd_mii.c, include/asm-m68k/byteorder.h, include/asm-m68k/fec.h,
include/asm-m68k/io.h, include/asm-m68k/mcftimer.h,
include/asm-m68k/mcfuart.h, include/asm-m68k/ptrace.h,
include/asm-m68k/u-boot.h, lib_m68k/Makefile, lib_m68k/board.c,
lib_m68k/time.c, net/eth.c and rtc/Makefile
Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
Diffstat (limited to 'lib_m68k/time.c')
| -rw-r--r-- | lib_m68k/time.c | 167 | 
1 files changed, 165 insertions, 2 deletions
| diff --git a/lib_m68k/time.c b/lib_m68k/time.c index 12e38f057..0e4efa473 100644 --- a/lib_m68k/time.c +++ b/lib_m68k/time.c @@ -46,13 +46,11 @@  #include <asm/immap_5249.h>  #endif -  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 @@ -293,6 +291,171 @@ void set_timer (ulong t)  }  #endif +#if defined(CONFIG_MCFTMR) +#ifndef CFG_UDELAY_BASE +#	error	"uDelay base not defined!" +#endif + +#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); + +void udelay(unsigned long usec) +{ +	volatile dtmr_t *timerp = (dtmr_t *) (CFG_UDELAY_BASE); +	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->tmr = DTIM_DTMR_RST_RST; +		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; + +		start = now = timerp->tcn; +		while (now < start + tmp) +			now = timerp->tcn; +	} +} + +void dtimer_interrupt(void *not_used) +{ +	volatile dtmr_t *timerp = (dtmr_t *) (CFG_TMR_BASE); +	volatile int0_t *intp = (int0_t *) (CFG_INTR_BASE); + +	/* check for timer interrupt asserted */ +	if ((intp->iprh0 & CFG_TMRINTR_MASK) == CFG_TMRINTR_MASK) { +		timerp->ter = (DTIM_DTER_CAP | DTIM_DTER_REF); +		timestamp++; +		return; +	} +} + +void timer_init(void) +{ +	volatile dtmr_t *timerp = (dtmr_t *) (CFG_TMR_BASE); +	volatile int0_t *intp = (int0_t *) (CFG_INTR_BASE); + +	timestamp = 0; + +	timerp->tcn = 0; +	timerp->trr = 0; + +	/* Set up TIMER 4 as clock */ +	timerp->tmr = DTIM_DTMR_RST_RST; + +	/* initialize and enable timer 4 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; + +	/* set a period of 1us, set timer mode to restart and enable timer and interrupt */ +	timerp->tmr = CFG_TIMER_PRESCALER | DTIM_DTMR_CLK_DIV1 | +	    DTIM_DTMR_FRR | DTIM_DTMR_ORRI | DTIM_DTMR_RST_EN; +} + +void reset_timer(void) +{ +	timestamp = 0; +} + +ulong get_timer(ulong base) +{ +	return (timestamp - base); +} + +void set_timer(ulong t) +{ +	timestamp = t; +} +#endif				/* CONFIG_MCFTMR */ + +#if defined(CONFIG_MCFPIT) +#if !defined(CFG_PIT_BASE) +#	error	"CFG_PIT_BASE not defined!" +#endif + +static unsigned short lastinc; + +void udelay(unsigned long usec) +{ +	volatile pit_t *timerp = (pit_t *) (CFG_UDELAY_BASE); +	uint tmp; + +	while (usec > 0) { +		if (usec > 65000) +			tmp = 65000; +		else +			tmp = usec; +		usec = usec - tmp; + +		/* Set up TIMER 3 as timebase clock */ +		timerp->pcsr = PIT_PCSR_OVW; +		timerp->pmr = 0; +		/* set period to 1 us */ +		timerp->pcsr |= PIT_PCSR_PRE(CFG_PIT_PRESCALE) | PIT_PCSR_EN; + +		timerp->pmr = tmp; +		while (timerp->pcntr > 0) ; +	} +} + +void timer_init(void) +{ +	volatile pit_t *timerp = (pit_t *) (CFG_PIT_BASE); +	timestamp = 0; + +	/* Set up TIMER 4 as poll clock */ +	timerp->pcsr = PIT_PCSR_OVW; +	timerp->pmr = lastinc = 0; +	timerp->pcsr |= PIT_PCSR_PRE(CFG_PIT_PRESCALE) | PIT_PCSR_EN; +} + +void set_timer(ulong t) +{ +	volatile pit_t *timerp = (pit_t *) (CFG_PIT_BASE); + +	timestamp = 0; +	timerp->pmr = lastinc = 0; +} + +ulong get_timer(ulong base) +{ +	unsigned short now, diff; +	volatile pit_t *timerp = (pit_t *) (CFG_PIT_BASE); + +	now = timerp->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				/* CONFIG_MCFPIT */  /*   * This function is derived from PowerPC code (read timebase as long long). |