diff options
author | TsiChung Liew <Tsi-Chung.Liew@freescale.com> | 2007-06-18 18:50:13 (GMT) |
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committer | John Rigby <jrigby@freescale.com> | 2007-06-18 21:17:56 (GMT) |
commit | 8e585f02f82c17cc66cd229dbf0fd3066bbbf658 (patch) | |
tree | 9483ff1f96ab9208eeac92101a5c6db855fcd2ee /lib_m68k/time.c | |
parent | 9912121f7ed804ea58fd62f3f230b5dcfc357d88 (diff) | |
download | u-boot-8e585f02f82c17cc66cd229dbf0fd3066bbbf658.tar.xz |
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 12e38f0..0e4efa4 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). |