| wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 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 | |
| 52 | void load_sernum_ethaddr (void) |
| 53 | { |
| 54 | unsigned char *hwi; |
| 55 | unsigned char serial [CFG_HWINFO_SIZE]; |
| 56 | unsigned char ethaddr[CFG_HWINFO_SIZE]; |
| 57 | unsigned short ih, is, ie, part; |
| 58 | |
| 59 | hwi = (unsigned char *)(CFG_FLASH_BASE + CFG_HWINFO_OFFSET); |
| 60 | ih = is = ie = 0; |
| 61 | |
| 62 | if (*((unsigned long *)hwi) != (unsigned long)CFG_HWINFO_MAGIC) { |
| 63 | return; |
| 64 | } |
| 65 | |
| 66 | part = 1; |
| 67 | |
| 68 | /* copy serial # / MAC address */ |
| 69 | while ((hwi[ih] != '\0') && (ih < CFG_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 ("serial#", serial); |
| 100 | } |
| 101 | |
| 102 | if (getenv("ethaddr") == NULL) { |
| 103 | setenv ("ethaddr", ethaddr); |
| 104 | } |
| 105 | } |