diff options
Diffstat (limited to 'cpu/mpc512x/serial.c')
| -rw-r--r-- | cpu/mpc512x/serial.c | 36 |
1 files changed, 15 insertions, 21 deletions
diff --git a/cpu/mpc512x/serial.c b/cpu/mpc512x/serial.c index d3ffff9..4fc4693 100644 --- a/cpu/mpc512x/serial.c +++ b/cpu/mpc512x/serial.c @@ -60,12 +60,24 @@ static void fifo_init (volatile psc512x_t *psc) __asm__ volatile ("sync"); } +void serial_setbrg(void) +{ + volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR; + volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE]; + unsigned long baseclk, div; + + /* calculate dividor for setting PSC CTUR and CTLR registers */ + baseclk = (gd->ips_clk + 8) / 16; + div = (baseclk + (gd->baudrate / 2)) / gd->baudrate; + + out_8(&psc->ctur, (div >> 8) & 0xff); + out_8(&psc->ctlr, div & 0xff); /* set baudrate */ +} + int serial_init(void) { volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR; volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE]; - unsigned long baseclk; - int div; fifo_init (psc); @@ -87,13 +99,8 @@ int serial_init(void) /* now, mode register points to mr2 */ out_8(&psc->mode, PSC_MODE_1_STOPBIT); - /* calculate dividor for setting PSC CTUR and CTLR registers */ - baseclk = (gd->ips_clk + 8) / 16; - div = (baseclk + (gd->baudrate / 2)) / gd->baudrate; - - out_8(&psc->ctur, (div >> 8) & 0xff); /* set baudrate */ - out_8(&psc->ctlr, div & 0xff); + serial_setbrg(); /* disable all interrupts */ out_be16(&psc->psc_imr, 0); @@ -161,19 +168,6 @@ int serial_tstc (void) return !(in_be32(&psc->rfstat) & PSC_FIFO_EMPTY); } -void serial_setbrg (void) -{ - volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR; - volatile psc512x_t *psc = (psc512x_t *) &im->psc[CONFIG_PSC_CONSOLE]; - unsigned long baseclk, div; - - baseclk = (gd->ips_clk + 8) / 16; - div = (baseclk + (gd->baudrate / 2)) / gd->baudrate; - - out_8(&psc->ctur, (div >> 8) & 0xFF); - out_8(&psc->ctlr, div & 0xff); /* set baudrate */ -} - void serial_setrts(int s) { volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR; |