diff options
Diffstat (limited to 'board/bmw/serial.c')
-rw-r--r-- | board/bmw/serial.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/board/bmw/serial.c b/board/bmw/serial.c new file mode 100644 index 0000000..f36a41b --- /dev/null +++ b/board/bmw/serial.c @@ -0,0 +1,83 @@ +/* + * (C) Copyright 2000 + * Rob Taylor, Flying Pig Systems. robt@flyingpig.com. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include "ns16550.h" + +#if CONFIG_CONS_INDEX == 1 +static struct NS16550 *console = + (struct NS16550 *) (CFG_EUMB_ADDR + 0x4500); +#elif CONFIG_CONS_INDEX == 2 +static struct NS16550 *console = + (struct NS16550 *) (CFG_EUMB_ADDR + 0x4500); +#else +#error no valid console defined +#endif + +extern ulong get_bus_freq (ulong); + +int serial_init (void) +{ + DECLARE_GLOBAL_DATA_PTR; + + int clock_divisor = gd->bus_clk / 16 / gd->baudrate; + + NS16550_init (CONFIG_CONS_INDEX - 1, clock_divisor); + + return (0); +} + +void serial_putc (const char c) +{ + if (c == '\n') { + serial_putc ('\r'); + } + NS16550_putc (console, c); +} + +void serial_puts (const char *s) +{ + while (*s) { + serial_putc (*s++); + } +} + + +int serial_getc (void) +{ + return NS16550_getc (console); +} + +int serial_tstc (void) +{ + return NS16550_tstc (console); +} + +void serial_setbrg (void) +{ + DECLARE_GLOBAL_DATA_PTR; + + int clock_divisor = get_bus_freq (0) / 16 / gd->baudrate; + + NS16550_reinit (console, clock_divisor); +} |