mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-14 07:13:28 +08:00
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/*
|
|
* (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"
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#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)
|
|
{
|
|
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)
|
|
{
|
|
int clock_divisor = get_bus_freq (0) / 16 / gd->baudrate;
|
|
|
|
NS16550_reinit (console, clock_divisor);
|
|
}
|