uncompress.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- /*
- * 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);
- }