LXR uboot/board/amirix/ap1000/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 <config.h>
  27
  28#include <ns16550.h>
  29
  30DECLARE_GLOBAL_DATA_PTR;
  31
  32const NS16550_t COM_PORTS[] =
  33        { (NS16550_t) CONFIG_SYS_NS16550_COM1, (NS16550_t) CONFIG_SYS_NS16550_COM2 };
  34
  35#undef CONFIG_SYS_DUART_CHAN
  36#define CONFIG_SYS_DUART_CHAN gComPort
  37static int gComPort = 0;
  38
  39int serial_init (void)
  40{
  41        int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
  42
  43        (void) NS16550_init (COM_PORTS[0], clock_divisor);
  44        gComPort = 0;
  45
  46        return 0;
  47}
  48
  49void serial_putc (const char c)
  50{
  51        if (c == '\n') {
  52                NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r');
  53        }
  54
  55        NS16550_putc (COM_PORTS[CONFIG_SYS_DUART_CHAN], c);
  56}
  57
  58int serial_getc (void)
  59{
  60        return NS16550_getc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  61}
  62
  63int serial_tstc (void)
  64{
  65        return NS16550_tstc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  66}
  67
  68void serial_setbrg (void)
  69{
  70        int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
  71
  72#ifdef CONFIG_SYS_INIT_CHAN1
  73        NS16550_reinit (COM_PORTS[0], clock_divisor);
  74#endif
  75#ifdef CONFIG_SYS_INIT_CHAN2
  76        NS16550_reinit (COM_PORTS[1], clock_divisor);
  77#endif
  78}
  79
  80void serial_puts (const char *s)
  81{
  82        while (*s) {
  83                serial_putc (*s++);
  84        }
  85}
  86
  87#if defined(CONFIG_CMD_KGDB)
  88void kgdb_serial_init (void)
  89{
  90}
  91
  92void putDebugChar (int c)
  93{
  94        serial_putc (c);
  95}
  96
  97void putDebugStr (const char *str)
  98{
  99        serial_puts (str);
 100}
 101
 102int getDebugChar (void)
 103{
 104        return serial_getc ();
 105}
 106
 107void kgdb_interruptible (int yes)
 108{
 109        return;
 110}
 111#endif
 112