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 <asm/u-boot.h>
  23 #include <asm/processor.h>
  24 #include <common.h>
  25 #include <command.h>
  26 #include <config.h>
  27
  28 #include <ns16550.h>
  29
  30 #if 0
  31 #include "serial.h"
  32 #endif
  33
  34 const NS16550_t COM_PORTS[] =
  35         { (NS16550_t) CFG_NS16550_COM1, (NS16550_t) CFG_NS16550_COM2 };
  36
  37 #undef CFG_DUART_CHAN
  38 #define CFG_DUART_CHAN gComPort
  39 static int gComPort = 0;
  40
  41 int serial_init (void)
  42 {
  43         DECLARE_GLOBAL_DATA_PTR;
  44
  45         int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
  46
  47         (void) NS16550_init (COM_PORTS[0], clock_divisor);
  48         gComPort = 0;
  49
  50         return 0;
  51 }
  52
  53 void serial_putc (const char c)
  54 {
  55         if (c == '\n') {
  56                 NS16550_putc (COM_PORTS[CFG_DUART_CHAN], '\r');
  57         }
  58
  59         NS16550_putc (COM_PORTS[CFG_DUART_CHAN], c);
  60 }
  61
  62 int serial_getc (void)
  63 {
  64         return NS16550_getc (COM_PORTS[CFG_DUART_CHAN]);
  65 }
  66
  67 int serial_tstc (void)
  68 {
  69         return NS16550_tstc (COM_PORTS[CFG_DUART_CHAN]);
  70 }
  71
  72 void serial_setbrg (void)
  73 {
  74         DECLARE_GLOBAL_DATA_PTR;
  75
  76         int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
  77
  78 #ifdef CFG_INIT_CHAN1
  79         NS16550_reinit (COM_PORTS[0], clock_divisor);
  80 #endif
  81 #ifdef CFG_INIT_CHAN2
  82         NS16550_reinit (COM_PORTS[1], clock_divisor);
  83 #endif
  84 }
  85
  86 void serial_puts (const char *s)
  87 {
  88         while (*s) {
  89                 serial_putc (*s++);
  90         }
  91 }
  92
  93 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
  94 void kgdb_serial_init (void)
  95 {
  96 }
  97
  98 void putDebugChar (int c)
  99 {
 100         serial_putc (c);
 101 }
 102
 103 void putDebugStr (const char *str)
 104 {
 105         serial_puts (str);
 106 }
 107
 108 int getDebugChar (void)
 109 {
 110         return serial_getc ();
 111 }
 112
 113 void kgdb_interruptible (int yes)
 114 {
 115         return;
 116 }
 117 #endif /* CFG_CMD_KGDB */