src/console/console.c

   1 /*
   2  * Bootstrap code for the INTEL
   3  */
   4
   5 #include <arch/io.h>
   6 #include <console/console.h>
   7 #include <string.h>
   8 #include <pc80/mc146818rtc.h>
   9
  10
  11 /* initialize the console */
  12 void console_init(void)
  13 {
  14         struct console_driver *driver;
  15         if(get_option(&console_loglevel, "debug_level"))
  16                 console_loglevel=CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
  17
  18         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  19                 if (!driver->init)
  20                         continue;
  21                 driver->init();
  22         }
  23 }
  24
  25 static void __console_tx_byte(unsigned char byte)
  26 {
  27         struct console_driver *driver;
  28         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  29                 driver->tx_byte(byte);
  30         }
  31 }
  32
  33 void console_tx_flush(void)
  34 {
  35         struct console_driver *driver;
  36         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  37                 if (!driver->tx_flush)
  38                         continue;
  39                 driver->tx_flush();
  40         }
  41 }
  42
  43 void console_tx_byte(unsigned char byte)
  44 {
  45         if (byte == '\n')
  46                 __console_tx_byte('\r');
  47         __console_tx_byte(byte);
  48 }
  49
  50 unsigned char console_rx_byte(void)
  51 {
  52         struct console_driver *driver;
  53         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  54                 if (driver->tst_byte)
  55                         break;
  56         }
  57         if (driver == econsole_drivers)
  58                 return 0;
  59         while (!driver->tst_byte());
  60         return driver->rx_byte();
  61 }
  62
  63 int console_tst_byte(void)
  64 {
  65         struct console_driver *driver;
  66         for(driver = console_drivers; driver < econsole_drivers; driver++)
  67                 if (driver->tst_byte)
  68                         return driver->tst_byte();
  69         return 0;
  70 }
  71
  72 /*
  73  *    Write POST information
  74  */
  75 void post_code(uint8_t value)
  76 {
  77 #if !defined(CONFIG_NO_POST) || CONFIG_NO_POST==0
  78 #if CONFIG_SERIAL_POST==1
  79         printk_emerg("POST: 0x%02x\n", value);
  80 #endif
  81         outb(value, 0x80);
  82 #endif
  83 }