Viewing file:  uncompress.h (1.41 KB) -rw-r--r--
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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))
;
__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);
}
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