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