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/*
* Borrowed from arch/mips/r39xx/prom/init.c
*
*/
/*
* init.c: early initialisation code for R39XX Class PDAs
*
* Copyright (C) 1999 Harald Koerfgen
*
* $Id: prom_printf.c,v 1.2 2008/08/04 08:54:44 michael Exp $
*/
#define CONFIG_SERIAL
#include <stdarg.h>
//#include <linux/config.h>
#include <linux/autoconf.h>
#ifdef CONFIG_RTL_EB8186
#include <asm/rtl8181.h>
#endif
#if 1
//#define __KERNEL__
//#include <asm/types.h>
//#include <asm/serial.h>
#include <asm/io.h>
#define UART_THR 0x2000
#define UART_LSR 0x2014
#define rtl_outb(port,val) outb(val,port)
#define rtl_inb(port) inb(port)
#endif
void serial_outc(char c)
{
int i=0;
while (1)
{
i++;
if (i >=0x6000)
break;
if (rtl_inb(UART_LSR) & 0x20)
break;
}
rtl_outb(UART_THR, c);
}
/*
* Helpful for debugging :-)
*/
int prom_printf(const char * fmt, ...)
{
#ifdef CONFIG_SERIAL
//extern void serial_outc(char);
static char buf[1024];
va_list args;
char c;
int i = 0;
/*
* Printing messages via serial port
*/
va_start(args, fmt);
vsprintf(buf, fmt, args);
va_end(args);
for (i = 0; buf[i] != '\0'; i++) {
c = buf[i];
if (c == '\n')
serial_outc('\r');
serial_outc(c);
}
return i;
#else
return 0;
#endif
}
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