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_NE2K
  26 #include <console/ne2k.h>
  27 #endif
  28
  29 #ifndef __PRE_RAM__
  30 #include <string.h>
  31 #include <pc80/mc146818rtc.h>
  32
  33 /* initialize the console */
  34 void console_init(void)
  35 {
  36         struct console_driver *driver;
  37         if(get_option(&console_loglevel, "debug_level"))
  38                 console_loglevel=CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
  39
  40         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  41                 if (!driver->init)
  42                         continue;
  43                 driver->init();
  44         }
  45 }
  46
  47 static void __console_tx_byte(unsigned char byte)
  48 {
  49         struct console_driver *driver;
  50         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  51                 driver->tx_byte(byte);
  52         }
  53 }
  54
  55 void console_tx_flush(void)
  56 {
  57         struct console_driver *driver;
  58         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  59                 if (!driver->tx_flush)
  60                         continue;
  61                 driver->tx_flush();
  62         }
  63 }
  64
  65 void console_tx_byte(unsigned char byte)
  66 {
  67         if (byte == '\n')
  68                 __console_tx_byte('\r');
  69         __console_tx_byte(byte);
  70 }
  71
  72 unsigned char console_rx_byte(void)
  73 {
  74         struct console_driver *driver;
  75         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  76                 if (driver->tst_byte)
  77                         break;
  78         }
  79         if (driver == econsole_drivers)
  80                 return 0;
  81         while (!driver->tst_byte());
  82         return driver->rx_byte();
  83 }
  84
  85 int console_tst_byte(void)
  86 {
  87         struct console_driver *driver;
  88         for(driver = console_drivers; driver < econsole_drivers; driver++)
  89                 if (driver->tst_byte)
  90                         return driver->tst_byte();
  91         return 0;
  92 }
  93
  94 /*
  95  *    Write POST information
  96  */
  97 void post_code(u8 value)
  98 {
  99 #if !defined(CONFIG_NO_POST) || CONFIG_NO_POST==0
 100 #if CONFIG_SERIAL_POST==1
 101         printk(BIOS_EMERG, "POST: 0x%02x\n", value);
 102 #endif
 103         outb(value, 0x80);
 104 #endif
 105 }
 106
 107 /* Report a fatal error */
 108 void __attribute__((noreturn)) die(const char *msg)
 109 {
 110         printk(BIOS_EMERG, "%s", msg);
 111         //post_code(0xff);
 112         for (;;)
 113                 hlt();          /* Halt */
 114 }
 115
 116 #else
 117
 118 void console_init(void)
 119 {
 120 #if CONFIG_CONSOLE_NE2K
 121         ne2k_init(CONFIG_CONSOLE_NE2K_IO_PORT);
 122 #endif
 123         static const char console_test[] =
 124                 "\n\ncoreboot-"
 125                 COREBOOT_VERSION
 126                 COREBOOT_EXTRA_VERSION
 127                 " "
 128                 COREBOOT_BUILD
 129                 " starting...\n";
 130         print_info(console_test);
 131 }
 132
 133 void post_code(u8 value)
 134 {
 135 #if !defined(CONFIG_NO_POST) || CONFIG_NO_POST==0
 136 #if CONFIG_SERIAL_POST==1
 137         print_emerg("POST: 0x");
 138         print_emerg_hex8(value);
 139         print_emerg("\n");
 140 #endif
 141         outb(value, 0x80);
 142 #endif
 143 }
 144
 145 void die(const char *str)
 146 {
 147         print_emerg(str);
 148         do {
 149                 hlt();
 150         } while(1);
 151 }
 152 #endif