src/console/console.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2003 Eric Biederman
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  18  */
  19
  20 #include <console/console.h>
  21 #include <build.h>
  22 #include <arch/hlt.h>
  23 #include <arch/io.h>
  24
  25 #if CONFIG_CONSOLE_SERIAL8250
  26 #include <uart8250.h>
  27 #endif
  28
  29 #if CONFIG_CONSOLE_NE2K
  30 #include <console/ne2k.h>
  31 #endif
  32
  33 #ifndef __PRE_RAM__
  34 #include <string.h>
  35 #include <pc80/mc146818rtc.h>
  36
  37 /* initialize the console */
  38 void console_init(void)
  39 {
  40         struct console_driver *driver;
  41         if(get_option(&console_loglevel, "debug_level"))
  42                 console_loglevel=CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
  43
  44         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  45                 if (!driver->init)
  46                         continue;
  47                 driver->init();
  48         }
  49 }
  50
  51 static void __console_tx_byte(unsigned char byte)
  52 {
  53         struct console_driver *driver;
  54         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  55                 driver->tx_byte(byte);
  56         }
  57 }
  58
  59 void console_tx_flush(void)
  60 {
  61         struct console_driver *driver;
  62         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  63                 if (!driver->tx_flush)
  64                         continue;
  65                 driver->tx_flush();
  66         }
  67 }
  68
  69 void console_tx_byte(unsigned char byte)
  70 {
  71         if (byte == '\n')
  72                 __console_tx_byte('\r');
  73         __console_tx_byte(byte);
  74 }
  75
  76 unsigned char console_rx_byte(void)
  77 {
  78         struct console_driver *driver;
  79         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  80                 if (driver->tst_byte)
  81                         break;
  82         }
  83         if (driver == econsole_drivers)
  84                 return 0;
  85         while (!driver->tst_byte());
  86         return driver->rx_byte();
  87 }
  88
  89 int console_tst_byte(void)
  90 {
  91         struct console_driver *driver;
  92         for(driver = console_drivers; driver < econsole_drivers; driver++)
  93                 if (driver->tst_byte)
  94                         return driver->tst_byte();
  95         return 0;
  96 }
  97
  98 #else
  99
 100 void console_init(void)
 101 {
 102 #if CONFIG_USBDEBUG
 103         enable_usbdebug(CONFIG_USBDEBUG_DEFAULT_PORT);
 104         early_usbdebug_init();
 105 #endif
 106 #if CONFIG_CONSOLE_SERIAL8250
 107         uart_init();
 108 #endif
 109 #if CONFIG_CONSOLE_NE2K
 110         ne2k_init(CONFIG_CONSOLE_NE2K_IO_PORT);
 111 #endif
 112         static const char console_test[] =
 113                 "\n\ncoreboot-"
 114                 COREBOOT_VERSION
 115                 COREBOOT_EXTRA_VERSION
 116                 " "
 117                 COREBOOT_BUILD
 118                 " starting...\n";
 119         print_info(console_test);
 120 }
 121 #endif