src/console/console.c

   1 /*
   2  * Bootstrap code for the INTEL
   3  * $Id$
   4  *
   5  */
   6
   7 #include <arch/io.h>
   8 #include <console/console.h>
   9 #include <string.h>
  10 #include <pc80/mc146818rtc.h>
  11
  12
  13 static int initialized;
  14
  15 /* initialize the console */
  16 void console_init(void)
  17 {
  18         struct console_driver *driver;
  19         if(get_option(&console_loglevel, "debug_level"))
  20                 console_loglevel=DEFAULT_CONSOLE_LOGLEVEL;
  21
  22         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  23                 if (!driver->init)
  24                         continue;
  25                 driver->init();
  26         }
  27         initialized = 1;
  28 }
  29
  30 static void __console_tx_byte(unsigned char byte)
  31 {
  32         struct console_driver *driver;
  33         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  34                 driver->tx_byte(byte);
  35         }
  36 }
  37
  38 void console_tx_flush(void)
  39 {
  40         struct console_driver *driver;
  41         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  42                 if (!driver->tx_flush)
  43                         continue;
  44                 driver->tx_flush();
  45         }
  46 }
  47
  48 void console_tx_byte(unsigned char byte)
  49 {
  50         if (!initialized)
  51                 return;
  52         if (byte == '\n')
  53                 __console_tx_byte('\r');
  54         __console_tx_byte(byte);
  55 }
  56
  57 /*
  58  *    Write POST information
  59  */
  60 void post_code(uint8_t value)
  61 {
  62 #ifdef CONFIG_SERIAL_POST
  63         printk_info("POST: 0x%02x\n", value);
  64 #elsif !define(NO_POST)
  65         outb(value, 0x80);
  66 #endif
  67 }
  68
  69 /* Report a fatal error */
  70 void die(char *msg)
  71 {
  72         printk_emerg("%s", msg);
  73         post_code(0xff);
  74         while (1);              /* Halt */
  75 }