src/console/console.c

   1 /*
   2  * Bootstrap code for the INTEL
   3  */
   4
   5 #include <console/console.h>
   6 #include <build.h>
   7 #include <arch/hlt.h>
   8 #include <arch/io.h>
   9
  10 #ifndef __PRE_RAM__
  11 #include <string.h>
  12 #include <pc80/mc146818rtc.h>
  13
  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=CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
  21
  22         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  23                 if (!driver->init)
  24                         continue;
  25                 driver->init();
  26         }
  27 }
  28
  29 static void __console_tx_byte(unsigned char byte)
  30 {
  31         struct console_driver *driver;
  32         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  33                 driver->tx_byte(byte);
  34         }
  35 }
  36
  37 void console_tx_flush(void)
  38 {
  39         struct console_driver *driver;
  40         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  41                 if (!driver->tx_flush)
  42                         continue;
  43                 driver->tx_flush();
  44         }
  45 }
  46
  47 void console_tx_byte(unsigned char byte)
  48 {
  49         if (byte == '\n')
  50                 __console_tx_byte('\r');
  51         __console_tx_byte(byte);
  52 }
  53
  54 unsigned char console_rx_byte(void)
  55 {
  56         struct console_driver *driver;
  57         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  58                 if (driver->tst_byte)
  59                         break;
  60         }
  61         if (driver == econsole_drivers)
  62                 return 0;
  63         while (!driver->tst_byte());
  64         return driver->rx_byte();
  65 }
  66
  67 int console_tst_byte(void)
  68 {
  69         struct console_driver *driver;
  70         for(driver = console_drivers; driver < econsole_drivers; driver++)
  71                 if (driver->tst_byte)
  72                         return driver->tst_byte();
  73         return 0;
  74 }
  75
  76 /*
  77  *    Write POST information
  78  */
  79 void post_code(u8 value)
  80 {
  81 #if !defined(CONFIG_NO_POST) || CONFIG_NO_POST==0
  82 #if CONFIG_SERIAL_POST==1
  83         printk(BIOS_EMERG, "POST: 0x%02x\n", value);
  84 #endif
  85         outb(value, 0x80);
  86 #endif
  87 }
  88
  89 /* Report a fatal error */
  90 void __attribute__((noreturn)) die(const char *msg)
  91 {
  92         printk(BIOS_EMERG, "%s", msg);
  93         //post_code(0xff);
  94         for (;;)
  95                 hlt();          /* Halt */
  96 }
  97
  98 #else
  99
 100 void console_init(void)
 101 {
 102         static const char console_test[] =
 103                 "\n\ncoreboot-"
 104                 COREBOOT_VERSION
 105                 COREBOOT_EXTRA_VERSION
 106                 " "
 107                 COREBOOT_BUILD
 108                 " starting...\n";
 109         print_info(console_test);
 110 }
 111
 112 void post_code(u8 value)
 113 {
 114 #if !defined(CONFIG_NO_POST) || CONFIG_NO_POST==0
 115 #if CONFIG_SERIAL_POST==1
 116         print_emerg("POST: 0x");
 117         print_emerg_hex8(value);
 118         print_emerg("\n");
 119 #endif
 120         outb(value, 0x80);
 121 #endif
 122 }
 123
 124 void die(const char *str)
 125 {
 126         print_emerg(str);
 127         do {
 128                 hlt();
 129         } while(1);
 130 }
 131 #endif