1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/*
* (C) Copyright 2003
* Reinhard Meyer, EMK Elektronik GmbH, r.meyer@emk-elektronik.de
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
/*****************************************************************************
* read "factory" part of EEPROM and set some environment variables
*****************************************************************************/
void read_factory_r (void)
{
/* read 'factory' part of EEPROM */
uchar buf[81];
uchar *p;
uint length;
uint addr;
uint len;
/* get length first */
addr = CONFIG_SYS_FACT_OFFSET;
if (eeprom_read (CONFIG_SYS_I2C_FACT_ADDR, addr, buf, 2)) {
bailout:
printf ("cannot read factory configuration\n");
printf ("be sure to set ethaddr yourself!\n");
return;
}
length = buf[0] + (buf[1] << 8);
addr += 2;
/* sanity check */
if (length < 20 || length > CONFIG_SYS_FACT_SIZE - 2)
goto bailout;
/* read lines */
while (length > 0) {
/* read one line */
len = length > 80 ? 80 : length;
if (eeprom_read (CONFIG_SYS_I2C_FACT_ADDR, addr, buf, len))
goto bailout;
/* mark end of buffer */
buf[len] = 0;
/* search end of line */
for (p = buf; *p && *p != 0x0a; p++);
if (!*p)
goto bailout;
*p++ = 0;
/* advance to next line start */
length -= p - buf;
addr += p - buf;
/*printf ("%s\n", buf); */
/* search for our specific entry */
if (!strncmp ((char *) buf, "[RLA/lan/Ethernet] ", 19)) {
setenv ("ethaddr", (char *)(buf + 19));
} else if (!strncmp ((char *) buf, "[BOARD/SERIAL] ", 15)) {
setenv ("serial#", (char *)(buf + 15));
} else if (!strncmp ((char *) buf, "[BOARD/TYPE] ", 13)) {
setenv ("board_id", (char *)(buf + 13));
}
}
}
|
