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/*
* Bootstrap code for the INTEL
*/
#include <arch/io.h>
#include <console/console.h>
#include <string.h>
#include <pc80/mc146818rtc.h>
static int initialized;
/* initialize the console */
void console_init(void)
{
struct console_driver *driver;
if(get_option(&console_loglevel, "debug_level"))
console_loglevel=DEFAULT_CONSOLE_LOGLEVEL;
for(driver = console_drivers; driver < econsole_drivers; driver++) {
if (!driver->init)
continue;
driver->init();
}
initialized = 1;
}
static void __console_tx_byte(unsigned char byte)
{
struct console_driver *driver;
for(driver = console_drivers; driver < econsole_drivers; driver++) {
driver->tx_byte(byte);
}
}
void console_tx_flush(void)
{
struct console_driver *driver;
for(driver = console_drivers; driver < econsole_drivers; driver++) {
if (!driver->tx_flush)
continue;
driver->tx_flush();
}
}
void console_tx_byte(unsigned char byte)
{
if (!initialized)
return;
if (byte == '\n')
__console_tx_byte('\r');
__console_tx_byte(byte);
}
unsigned char console_rx_byte(void)
{
struct console_driver *driver;
if (!initialized)
return 0;
for(driver = console_drivers; driver < econsole_drivers; driver++) {
if (driver->tst_byte)
break;
}
if (driver == econsole_drivers)
return 0;
while (!driver->tst_byte());
return driver->rx_byte();
}
int console_tst_byte(void)
{
struct console_driver *driver;
if (!initialized)
return 0;
for(driver = console_drivers; driver < econsole_drivers; driver++)
if (driver->tst_byte)
return driver->tst_byte();
return 0;
}
/*
* Write POST information
*/
void post_code(uint8_t value)
{
#if !defined(NO_POST) || NO_POST==0
#if CONFIG_SERIAL_POST==1
printk_emerg("POST: 0x%02x\n", value);
#endif
outb(value, 0x80);
#endif
}
/* Report a fatal error */
void __attribute__((noreturn)) die(const char *msg)
{
printk_emerg("%s", msg);
post_code(0xff);
while (1); /* Halt */
}
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