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/*
* (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 ((char *)"serial#", (char *)serial);
}
if (getenv("ethaddr") == NULL) {
setenv ((char *)"ethaddr", (char *)ethaddr);
}
}
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