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c609719b WD |
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; | |
6d0f6bcf JCPV |
55 | unsigned char serial [CONFIG_SYS_HWINFO_SIZE]; |
56 | unsigned char ethaddr[CONFIG_SYS_HWINFO_SIZE]; | |
c609719b WD |
57 | unsigned short ih, is, ie, part; |
58 | ||
6d0f6bcf | 59 | hwi = (unsigned char *)(CONFIG_SYS_FLASH_BASE + CONFIG_SYS_HWINFO_OFFSET); |
c609719b WD |
60 | ih = is = ie = 0; |
61 | ||
6d0f6bcf | 62 | if (*((unsigned long *)hwi) != (unsigned long)CONFIG_SYS_HWINFO_MAGIC) { |
c609719b WD |
63 | return; |
64 | } | |
65 | ||
66 | part = 1; | |
67 | ||
68 | /* copy serial # / MAC address */ | |
6d0f6bcf | 69 | while ((hwi[ih] != '\0') && (ih < CONFIG_SYS_HWINFO_SIZE)) { |
c609719b WD |
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) { | |
77ddac94 | 99 | setenv ((char *)"serial#", (char *)serial); |
c609719b WD |
100 | } |
101 | ||
102 | if (getenv("ethaddr") == NULL) { | |
77ddac94 | 103 | setenv ((char *)"ethaddr", (char *)ethaddr); |
c609719b WD |
104 | } |
105 | } |