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/*

 * linux/include/asm-arm/arch-nexuspci/uncompress.h

 *

 * Copyright (C) 1998, 1999, 2000 Philip Blundell

 */

/*

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 */

#include <asm/hardware.h>

#include <asm/io.h>

/*

 * Write a character to the UART

 */

void _ll_write_char(char c)

{

        while (!(__raw_readb(DUART_START + 0x4) & 0x4))

                barrier();

        __raw_writeb(c, DUART_START + 0xc);

}

/*

 * This does not append a newline

 */

static void puts(const char *s)

{

        while (*s) {

                if (*s == '\n')

                        _ll_write_char('\r');

                _ll_write_char(*(s++));

        }

}

/*

 * Set up for decompression

 */

static void arch_decomp_setup(void)

{

        /* LED off */

        __raw_writel(INTCONT_LED, INTCONT_START);

        /* Set up SCC */

        __raw_writeb(42, DUART_START + 8);

        __raw_writeb(48, DUART_START + 8);

        __raw_writeb(16, DUART_START + 8);

        __raw_writeb(0x93, DUART_START);

        __raw_writeb(0x17, DUART_START);

        __raw_writeb(0xbb, DUART_START + 4);

        __raw_writeb(0x78, DUART_START + 16);

        __raw_writeb(0xa0, DUART_START + 8);

        __raw_writeb(5, DUART_START + 8);

}

/*

 * Stroke the watchdog so we don't get reset during decompression.

 */

static inline void arch_decomp_wdog(void)

{

        __raw_writel(INTCONT_WATCHDOG, INTCONT_START);

        __raw_writel(INTCONT_WATCHDOG | 1, INTCONT_START);

}