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