LXR uboot/board/ml2/serial.c

   1/*
   2 * (C) Copyright 2002
   3 * Peter De Schrijver (p2@mind.be), Mind Linux Solutions, NV.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation; either version 2 of
   8 * the License, or (at your option) any later version.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18 * MA 02111-1307 USA
  19 *
  20 */
  21
  22#include <common.h>
  23#include <asm/u-boot.h>
  24#include <asm/processor.h>
  25#include <command.h>
  26#include <configs/ML2.h>
  27
  28#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
  29#include <ns16550.h>
  30#endif
  31
  32DECLARE_GLOBAL_DATA_PTR;
  33
  34#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
  35const NS16550_t COM_PORTS[] = { (NS16550_t) CONFIG_SYS_NS16550_COM1,
  36        (NS16550_t) CONFIG_SYS_NS16550_COM2
  37};
  38#endif
  39
  40int serial_init (void)
  41{
  42        int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
  43
  44#ifdef CONFIG_SYS_INIT_CHAN1
  45        (void) NS16550_init (COM_PORTS[0], clock_divisor);
  46#endif
  47#ifdef CONFIG_SYS_INIT_CHAN2
  48        (void) NS16550_init (COM_PORTS[1], clock_divisor);
  49#endif
  50        return 0;
  51
  52}
  53
  54void serial_putc (const char c)
  55{
  56        if (c == '\n')
  57                NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r');
  58
  59        NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], c);
  60}
  61
  62int serial_getc (void)
  63{
  64        return NS16550_getc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  65}
  66
  67int serial_tstc (void)
  68{
  69        return NS16550_tstc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  70}
  71
  72void serial_setbrg (void)
  73{
  74        int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
  75
  76#ifdef CONFIG_SYS_INIT_CHAN1
  77        NS16550_reinit (COM_PORTS[0], clock_divisor);
  78#endif
  79#ifdef CONFIG_SYS_INIT_CHAN2
  80        NS16550_reinit (COM_PORTS[1], clock_divisor);
  81#endif
  82}
  83
  84void serial_puts (const char *s)
  85{
  86        while (*s) {
  87                serial_putc (*s++);
  88        }
  89}
  90
  91#if defined(CONFIG_CMD_KGDB)
  92void kgdb_serial_init (void)
  93{
  94}
  95
  96void putDebugChar (int c)
  97{
  98        serial_putc (c);
  99}
 100
 101void putDebugStr (const char *str)
 102{
 103        serial_puts (str);
 104}
 105
 106int getDebugChar (void)
 107{
 108        return serial_getc ();
 109}
 110
 111void kgdb_interruptible (int yes)
 112{
 113        return;
 114}
 115#endif
 116