/* * (C) Copyright 2000, 2001, 2002 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */#include <common.h>#include <mpc8xx.h>/*----------------------------------------------------------------------- * Process Hardware Information Block: * * If we boot on a system fresh from factory, check if the Hardware * Information Block exists and save the information it contains. * * The TQM8xxL / TQM82xx Hardware Information Block is defined as * follows: * - located in first flash bank * - starts at offset 0x0003FFC0 * - size 0x00000040 * * Internal structure: * - sequence of ASCII character strings * - fields separated by a single space character (0x20) * - last field terminated by NUL character (0x00) * - remaining space filled with NUL characters (0x00) * * Fields in Hardware Information Block: * 1) Module Type * 2) Serial Number * 3) First MAC Address * 4) Number of additional MAC addresses */void load_sernum_ethaddr (void){	unsigned char *hwi;	unsigned char  serial [CFG_HWINFO_SIZE];	unsigned char  ethaddr[CFG_HWINFO_SIZE];	unsigned short ih, is, ie, part;	hwi = (unsigned char *)(CFG_FLASH_BASE + CFG_HWINFO_OFFSET);	ih = is = ie = 0;	if (*((unsigned long *)hwi) != (unsigned long)CFG_HWINFO_MAGIC) {		return;	}	part = 1;	/* copy serial # / MAC address */	while ((hwi[ih] != '\0') && (ih < CFG_HWINFO_SIZE)) {		if (hwi[ih] < ' ' || hwi[ih] > '~') { /* ASCII strings! */			return;		}		switch (part) {		default:		/* Copy serial # */			if (hwi[ih] == ' ') {				++part;			}			serial[is++] = hwi[ih];			break;		case 3:			/* Copy MAC address */			if (hwi[ih] == ' ') {				++part;				break;			}			ethaddr[ie++] = hwi[ih];			if ((ie % 3) == 2)				ethaddr[ie++] = ':';			break;		}		++ih;	}	serial[is]  = '\0';	if (ie && ethaddr[ie-1] == ':')		--ie;	ethaddr[ie] = '\0';	/* set serial# and ethaddr if not yet defined */	if (getenv("serial#") == NULL) {		setenv ("serial#", serial);	}	if (getenv("ethaddr") == NULL) {		setenv ("ethaddr", ethaddr);	}}