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/*

 * 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>

#include <arch.h>

#include <arch/drivers/arc.h>

#include <arch/arch.h>

/** Putchar that works with MSIM & gxemul */

static void cons_putchar(const char ch)

{

    *((char *) VIDEORAM) = ch;

}

/** Putchar that works with simics */

static void serial_putchar(const char ch)

{

    int i;

    if (ch=='\n')

        putchar('\r');

    /* 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)

{

    if (arc_enabled())

        putchar_func = arc_putchar;

    /* The LSR on the start usually contains this value */

    else if (*SERIAL_LSR == 0x60)

        putchar_func = serial_putchar;

    else

        putchar_func = cons_putchar;

}

void putchar(const char ch)

{

    putchar_func(ch);

}