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
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 const 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
  37 static int gComPort = 0;
  38
  39 int 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
  49 void 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
  58 int serial_getc (void)
  59 {
  60         return NS16550_getc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  61 }
  62
  63 int serial_tstc (void)
  64 {
  65         return NS16550_tstc (COM_PORTS[CONFIG_SYS_DUART_CHAN]);
  66 }
  67
  68 void 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
  80 void serial_puts (const char *s)
  81 {
  82         while (*s) {
  83                 serial_putc (*s++);
  84         }
  85 }
  86
  87 #if defined(CONFIG_CMD_KGDB)
  88 void kgdb_serial_init (void)
  89 {
  90 }
  91
  92 void putDebugChar (int c)
  93 {
  94         serial_putc (c);
  95 }
  96
  97 void putDebugStr (const char *str)
  98 {
  99         serial_puts (str);
 100 }
 101
 102 int getDebugChar (void)
 103 {
 104         return serial_getc ();
 105 }
 106
 107 void kgdb_interruptible (int yes)
 108 {
 109         return;
 110 }
 111 #endif