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 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <common.h>
   9#include <mpc8xx.h>
  10
  11/*-----------------------------------------------------------------------
  12 * Process Hardware Information Block:
  13 *
  14 * If we boot on a system fresh from factory, check if the Hardware
  15 * Information Block exists and save the information it contains.
  16 *
  17 * The TQM8xxL / TQM82xx Hardware Information Block is defined as
  18 * follows:
  19 * - located in first flash bank
  20 * - starts at offset 0x0003FFC0
  21 * - size 0x00000040
  22 *
  23 * Internal structure:
  24 * - sequence of ASCII character strings
  25 * - fields separated by a single space character (0x20)
  26 * - last field terminated by NUL character (0x00)
  27 * - remaining space filled with NUL characters (0x00)
  28 *
  29 * Fields in Hardware Information Block:
  30 * 1) Module Type
  31 * 2) Serial Number
  32 * 3) First MAC Address
  33 * 4) Number of additional MAC addresses
  34 */
  35
  36void load_sernum_ethaddr (void)
  37{
  38        unsigned char *hwi;
  39        unsigned char  serial [CONFIG_SYS_HWINFO_SIZE];
  40        unsigned char  ethaddr[CONFIG_SYS_HWINFO_SIZE];
  41        unsigned short ih, is, ie, part;
  42
  43        hwi = (unsigned char *)(CONFIG_SYS_FLASH_BASE + CONFIG_SYS_HWINFO_OFFSET);
  44        ih = is = ie = 0;
  45
  46        if (*((unsigned long *)hwi) != (unsigned long)CONFIG_SYS_HWINFO_MAGIC) {
  47                return;
  48        }
  49
  50        part = 1;
  51
  52        /* copy serial # / MAC address */
  53        while ((hwi[ih] != '\0') && (ih < CONFIG_SYS_HWINFO_SIZE)) {
  54                if (hwi[ih] < ' ' || hwi[ih] > '~') { /* ASCII strings! */
  55                        return;
  56                }
  57                switch (part) {
  58                default:                /* Copy serial # */
  59                        if (hwi[ih] == ' ') {
  60                                ++part;
  61                        }
  62                        serial[is++] = hwi[ih];
  63                        break;
  64                case 3:                 /* Copy MAC address */
  65                        if (hwi[ih] == ' ') {
  66                                ++part;
  67                                break;
  68                        }
  69                        ethaddr[ie++] = hwi[ih];
  70                        if ((ie % 3) == 2)
  71                                ethaddr[ie++] = ':';
  72                        break;
  73                }
  74                ++ih;
  75        }
  76        serial[is]  = '\0';
  77        if (ie && ethaddr[ie-1] == ':')
  78                --ie;
  79        ethaddr[ie] = '\0';
  80
  81        /* set serial# and ethaddr if not yet defined */
  82        if (getenv("serial#") == NULL) {
  83                setenv ((char *)"serial#", (char *)serial);
  84        }
  85
  86        if (getenv("ethaddr") == NULL) {
  87                setenv ((char *)"ethaddr", (char *)ethaddr);
  88        }
  89}
  90