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
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 #if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
  35 const NS16550_t COM_PORTS[] = { (NS16550_t) CONFIG_SYS_NS16550_COM1,
  36         (NS16550_t) CONFIG_SYS_NS16550_COM2
  37 };
  38 #endif
  39
  40 int 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
  54 void 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
  62 int serial_getc (void)
  63 {
  64         return NS16550_getc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  65 }
  66
  67 int serial_tstc (void)
  68 {
  69         return NS16550_tstc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  70 }
  71
  72 void 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
  84 void serial_puts (const char *s)
  85 {
  86         while (*s) {
  87                 serial_putc (*s++);
  88         }
  89 }
  90
  91 #if defined(CONFIG_CMD_KGDB)
  92 void kgdb_serial_init (void)
  93 {
  94 }
  95
  96 void putDebugChar (int c)
  97 {
  98         serial_putc (c);
  99 }
 100
 101 void putDebugStr (const char *str)
 102 {
 103         serial_puts (str);
 104 }
 105
 106 int getDebugChar (void)
 107 {
 108         return serial_getc ();
 109 }
 110
 111 void kgdb_interruptible (int yes)
 112 {
 113         return;
 114 }
 115 #endif