uncompress.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 88 行

/* 
 * linux/include/asm-arm/arch-omap2/uncompress.h
 * 
 * uncompress and ugly serial code to startup the bootup of the board.
 *
 * Copyright (C) 2000 RidgeRun, Inc. (http://www.ridgerun.com)
 * Author: RidgeRun, Inc.
 *         Greg Lonnon ([e-mail]) or [e-mail]
 *
 * Copyright (C) 2004 Texas Instruments, Inc. 
 * 
 * This package is free software; you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation. 
 * 
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 
 */

#ifndef __ASM_ARM_ARCH_OMAP2_UNCOMPRESS_H
#define __ASM_ARM_ARCH_OMAP2_UNCOMPRESS_H

#define CONSOLE_CHANNEL  0

#define IO_ADDRESS(x)    (*(unsigned char *)x)

#define RBR              0x00
#define THR              0x00
#define DLL              0x00
#define IER              0x01
#define DLM              0x01
#define IIR              0x02
#define FCR              0x02
#define LCR              0x03
#define MCR              0x04
#define LSR              0x05
#define MSR              0x06
#define SCR              0x07

#if defined (CONFIG_ARCH_OMAP24XX)
#define DUART            0x4806a000
#define DUART_DELTA      0x4
#define CHANNELOFFSET    0x0
#endif

#define LCR_DLAB         0x80
#define XTAL             1843200
#define LSR_THRE         0x20
#define LSR_BI           0x10
#define LSR_DR           0x01
#define MCR_LOOP         0x10
#define ACCESS_DELAY     0x10000

/* Register operations */
#define inreg(channel,reg) (*((volatile unsigned char *)DUART + \
			   ((channel) * CHANNELOFFSET) + ((reg) * DUART_DELTA)))

#define outreg(channel,reg,val) (*((volatile unsigned char *)DUART + \
			   ((channel) * CHANNELOFFSET) + ((reg) * DUART_DELTA)) = (val))

/* Transmit a character. */
static void serial_putc(int channel, int c)
{
	int count = 0;
	while (((inreg(channel, LSR) & LSR_THRE) == 0) && (count++ < 50000)) ;
	outreg(channel, THR, c);
}

static int putstr(const char *s)
{

	while (*s) {
		serial_putc(CONSOLE_CHANNEL, *s);
		if (*s == '\n') {
			serial_putc(CONSOLE_CHANNEL, '\r');
		}
		s++;
	}
	return 0;
}

#define arch_decomp_setup()

#define arch_decomp_wdog()

#endif				/* __ASM_ARM_ARCH_OMAP2_UNCOMPRESS_H */