1/* 2 * include/asm-arm/arch-at91/uncompress.h 3 * 4 * Copyright (C) 2003 SAN People 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21#ifndef __ASM_ARCH_UNCOMPRESS_H 22#define __ASM_ARCH_UNCOMPRESS_H 23 24#include <asm/io.h> 25#include <asm/arch/at91_dbgu.h> 26 27/* 28 * The following code assumes the serial port has already been 29 * initialized by the bootloader. If you didn't setup a port in 30 * your bootloader then nothing will appear (which might be desired). 31 * 32 * This does not append a newline 33 */ 34static void putc(int c) 35{ 36 void __iomem *sys = (void __iomem *) AT91_BASE_SYS; /* physical address */ 37 38 while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXRDY)) 39 barrier(); 40 __raw_writel(c, sys + AT91_DBGU_THR); 41} 42 43static inline void flush(void) 44{ 45 void __iomem *sys = (void __iomem *) AT91_BASE_SYS; /* physical address */ 46 47 /* wait for transmission to complete */ 48 while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXEMPTY)) 49 barrier(); 50} 51 52#define arch_decomp_setup() 53 54#define arch_decomp_wdog() 55 56#endif 57