source: SVN/rincon/u-boot/board/emk/common/vpd.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.4 KB
Line 
1/*
2 * (C) Copyright 2003
3 * Reinhard Meyer, EMK Elektronik GmbH, r.meyer@emk-elektronik.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
26/*****************************************************************************
27 * read "factory" part of EEPROM and set some environment variables
28 *****************************************************************************/
29void read_factory_r (void)
30{
31        /* read 'factory' part of EEPROM */
32        uchar buf[81];
33        uchar *p;
34        uint length;
35        uint addr;
36        uint len;
37
38        /* get length first */
39        addr = CFG_FACT_OFFSET;
40        if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, 2)) {
41          bailout:
42                printf ("cannot read factory configuration\n");
43                printf ("be sure to set ethaddr yourself!\n");
44                return;
45        }
46        length = buf[0] + (buf[1] << 8);
47        addr += 2;
48
49        /* sanity check */
50        if (length < 20 || length > CFG_FACT_SIZE - 2)
51                goto bailout;
52
53        /* read lines */
54        while (length > 0) {
55                /* read one line */
56                len = length > 80 ? 80 : length;
57                if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, len))
58                        goto bailout;
59                /* mark end of buffer */
60                buf[len] = 0;
61                /* search end of line */
62                for (p = buf; *p && *p != 0x0a; p++);
63                if (!*p)
64                        goto bailout;
65                *p++ = 0;
66                /* advance to next line start */
67                length -= p - buf;
68                addr += p - buf;
69                /*printf ("%s\n", buf); */
70                /* search for our specific entry */
71                if (!strncmp ((char *) buf, "[RLA/lan/Ethernet] ", 19)) {
72                        setenv ("ethaddr", (char *)(buf + 19));
73                } else if (!strncmp ((char *) buf, "[BOARD/SERIAL] ", 15)) {
74                        setenv ("serial#", (char *)(buf + 15));
75                } else if (!strncmp ((char *) buf, "[BOARD/TYPE] ", 13)) {
76                        setenv ("board_id", (char *)(buf + 13));
77                }
78        }
79}
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