bootconfig.h

bootloader源代码

/*****************************************
 Copyright (c) 2001-2002 
 Sigma Designs, Inc. All Rights Reserved
 Proprietary and Confidential
 *****************************************/

/* This file is part of the boot loader */

/*
 * bootconfig.c
 *
 * first revision by Ho Lee 10/30/2002
 */

#ifndef __BOOTLOADER_BOOTCONFIG_H
#define __BOOTLOADER_BOOTCONFIG_H

// configuration data structure

#define BOOTCONFIG_HEADSIGN		(('B') | ('O' << 8) | ('O' << 16) | ('T' << 24))
#define BOOTCONFIG_BODYSIGN		(('C') | ('O' << 8) | ('N' << 16) | ('F' << 24))

#define BOOTCONFIG_MAJOR		0x01
#define BOOTCONFIG_MINOR		0x00

#define BOOTCONFIG_PATHLEN		32
#define DEFAULT_LOADER_FILENAME	"loader.bin"
#define DEFAULT_ROMFS_FILENAME	"romfs.bin"
#define DEFAULT_KERNEL_FILENAME	"linux.bin"

enum { BOOTNET_NONE, BOOTNET_STATIC, BOOTNET_BOOTP, BOOTNET_DHCP };

typedef struct {
	unsigned short major_version;	// major version of configuration
	unsigned short minor_version;	// minor version of configuration
	unsigned int checksum;			// checksum : BOOTCONFIG_BODYSIGN
	unsigned char macaddr[6];		// hardware address
	unsigned short protocol;		// BOOTNET_xxx
	unsigned int ipaddr;			// IP address
	unsigned int netmask;			// network mask
	unsigned int gateway;			// gateway
	unsigned int server;			// server for download
	unsigned int dns;				// DNS server
	unsigned char domain[24];		// domain name
	unsigned char loader_filename[BOOTCONFIG_PATHLEN];
	unsigned char romfs_filename[BOOTCONFIG_PATHLEN];
	unsigned char kernel_filename[BOOTCONFIG_PATHLEN];
} bootconfig_1_0_t;

typedef bootconfig_1_0_t bootconfig_t;

// global variables

extern bootconfig_t g_bootconfig;

// function prototypes

int bootconfig_load(int index);
int bootconfig_save(void);
int bootconfig_lastsaved(int *idx);

#endif