/*
* Copyright (C) 2005 Ondrej Palkovsky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <putchar.h>
#include <arch/types.h>
#include <arch/cp0.h>
#include <arch/console.h>
static void cons_putchar(const char ch)
{
*((char *) VIDEORAM) = ch;
}
static void serial_putchar(const char ch)
{
int i;
if (ch=='\n')
/* Wait until transmit buffer empty */
while (! ((*SERIAL_LSR) & (1<<TRANSMIT_EMPTY_BIT)))
;
*(SERIAL_PORT_BASE) = ch;
}
static void (*putchar_func)(const char ch) = cons_putchar;
void console_init(void)
{
/* The LSR on the start usually contains this value */
if (*SERIAL_LSR == 0x60)
putchar_func = serial_putchar;
else
putchar_func = cons_putchar;
}
{
putchar_func(ch);
}