LXR uboot/board/tqc/tqm8xx/load_sernum

   1/*
   2 * (C) Copyright 2000, 2001, 2002
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24#include <common.h>
  25#include <mpc8xx.h>
  26
  27/*-----------------------------------------------------------------------
  28 * Process Hardware Information Block:
  29 *
  30 * If we boot on a system fresh from factory, check if the Hardware
  31 * Information Block exists and save the information it contains.
  32 *
  33 * The TQM8xxL / TQM82xx Hardware Information Block is defined as
  34 * follows:
  35 * - located in first flash bank
  36 * - starts at offset 0x0003FFC0
  37 * - size 0x00000040
  38 *
  39 * Internal structure:
  40 * - sequence of ASCII character strings
  41 * - fields separated by a single space character (0x20)
  42 * - last field terminated by NUL character (0x00)
  43 * - remaining space filled with NUL characters (0x00)
  44 *
  45 * Fields in Hardware Information Block:
  46 * 1) Module Type
  47 * 2) Serial Number
  48 * 3) First MAC Address
  49 * 4) Number of additional MAC addresses
  50 */
  51
  52void load_sernum_ethaddr (void)
  53{
  54        unsigned char *hwi;
  55        unsigned char  serial [CONFIG_SYS_HWINFO_SIZE];
  56        unsigned char  ethaddr[CONFIG_SYS_HWINFO_SIZE];
  57        unsigned short ih, is, ie, part;
  58
  59        hwi = (unsigned char *)(CONFIG_SYS_FLASH_BASE + CONFIG_SYS_HWINFO_OFFSET);
  60        ih = is = ie = 0;
  61
  62        if (*((unsigned long *)hwi) != (unsigned long)CONFIG_SYS_HWINFO_MAGIC) {
  63                return;
  64        }
  65
  66        part = 1;
  67
  68        /* copy serial # / MAC address */
  69        while ((hwi[ih] != '\0') && (ih < CONFIG_SYS_HWINFO_SIZE)) {
  70                if (hwi[ih] < ' ' || hwi[ih] > '~') { /* ASCII strings! */
  71                        return;
  72                }
  73                switch (part) {
  74                default:                /* Copy serial # */
  75                        if (hwi[ih] == ' ') {
  76                                ++part;
  77                        }
  78                        serial[is++] = hwi[ih];
  79                        break;
  80                case 3:                 /* Copy MAC address */
  81                        if (hwi[ih] == ' ') {
  82                                ++part;
  83                                break;
  84                        }
  85                        ethaddr[ie++] = hwi[ih];
  86                        if ((ie % 3) == 2)
  87                                ethaddr[ie++] = ':';
  88                        break;
  89                }
  90                ++ih;
  91        }
  92        serial[is]  = '\0';
  93        if (ie && ethaddr[ie-1] == ':')
  94                --ie;
  95        ethaddr[ie] = '\0';
  96
  97        /* set serial# and ethaddr if not yet defined */
  98        if (getenv("serial#") == NULL) {
  99                setenv ((char *)"serial#", (char *)serial);
 100        }
 101
 102        if (getenv("ethaddr") == NULL) {
 103                setenv ((char *)"ethaddr", (char *)ethaddr);
 104        }
 105}
 106