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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/*
* Copyright 2006 Freescale Semiconductor
* York Sun (yorksun@freescale.com)
* Haiying Wang (haiying.wang@freescale.com)
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
#include <i2c.h>
#include <linux/ctype.h>
#ifdef CFG_ID_EEPROM
typedef struct {
unsigned char id[4]; /* 0x0000 - 0x0003 */
unsigned char sn[12]; /* 0x0004 - 0x000F */
unsigned char errata[5]; /* 0x0010 - 0x0014 */
unsigned char date[7]; /* 0x0015 - 0x001a */
unsigned char res_1[37]; /* 0x001b - 0x003f */
unsigned char tab_size; /* 0x0040 */
unsigned char tab_flag; /* 0x0041 */
unsigned char mac[8][6]; /* 0x0042 - 0x0071 */
unsigned char res_2[126]; /* 0x0072 - 0x00ef */
unsigned int crc; /* 0x00f0 - 0x00f3 crc32 checksum */
} EEPROM_data;
static EEPROM_data mac_data;
int mac_show(void)
{
int i;
unsigned char ethaddr[8][18];
printf("ID %c%c%c%c\n",
mac_data.id[0],
mac_data.id[1],
mac_data.id[2],
mac_data.id[3]);
printf("Errata %c%c%c%c%c\n",
mac_data.errata[0],
mac_data.errata[1],
mac_data.errata[2],
mac_data.errata[3],
mac_data.errata[4]);
printf("Date %c%c%c%c%c%c%c\n",
mac_data.date[0],
mac_data.date[1],
mac_data.date[2],
mac_data.date[3],
mac_data.date[4],
mac_data.date[5],
mac_data.date[6]);
for (i = 0; i < 8; i++) {
sprintf(ethaddr[i],
"%02x:%02x:%02x:%02x:%02x:%02x",
mac_data.mac[i][0],
mac_data.mac[i][1],
mac_data.mac[i][2],
mac_data.mac[i][3],
mac_data.mac[i][4],
mac_data.mac[i][5]);
printf("MAC %d %s\n", i, ethaddr[i]);
}
setenv("ethaddr", ethaddr[0]);
setenv("eth1addr", ethaddr[1]);
setenv("eth2addr", ethaddr[2]);
setenv("eth3addr", ethaddr[3]);
return 0;
}
int mac_read(void)
{
int ret, length;
unsigned int crc = 0;
unsigned char dev = ID_EEPROM_ADDR, *data;
length = sizeof(EEPROM_data);
ret = i2c_read(dev, 0, 1, (unsigned char *)(&mac_data), length);
if (ret) {
printf("Read failed.\n");
return -1;
}
data = (unsigned char *)(&mac_data);
printf("Check CRC on reading ...");
crc = crc32(crc, data, length - 4);
if (crc != mac_data.crc) {
printf("CRC checksum is invalid, in EEPROM CRC is %x, calculated CRC is %x\n",
mac_data.crc, crc);
return -1;
} else {
printf("CRC OK\n");
mac_show();
}
return 0;
}
int mac_prog(void)
{
int ret, i, length;
unsigned int crc = 0;
unsigned char dev = ID_EEPROM_ADDR, *ptr;
unsigned char *eeprom_data = (unsigned char *)(&mac_data);
for (i = 0; i < sizeof(mac_data.res_1); i++)
mac_data.res_1[i] = 0;
for (i = 0; i < sizeof(mac_data.res_2); i++)
mac_data.res_2[i] = 0;
length = sizeof(EEPROM_data);
crc = crc32(crc, eeprom_data, length - 4);
mac_data.crc = crc;
for (i = 0, ptr = eeprom_data; i < length; i += 8, ptr += 8) {
ret =
i2c_write(dev, i, 1, ptr,
(length - i) < 8 ? (length - i) : 8);
udelay(5000); /* 5ms write cycle timing */
if (ret)
break;
}
if (ret) {
printf("Programming failed.\n");
return -1;
} else {
printf("Programming %d bytes. Reading back ...\n", length);
mac_read();
}
return 0;
}
int do_mac(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
int i;
char cmd = 's';
unsigned long long mac_val;
if (i2c_probe(ID_EEPROM_ADDR) != 0)
return -1;
if (argc > 1) {
cmd = argv[1][0];
switch (cmd) {
case 'r': /* display */
mac_read();
break;
case 's': /* save */
mac_prog();
break;
case 'i': /* id */
for (i = 0; i < 4; i++) {
mac_data.id[i] = argv[2][i];
}
break;
case 'n': /* serial number */
for (i = 0; i < 12; i++) {
mac_data.sn[i] = argv[2][i];
}
break;
case 'e': /* errata */
for (i = 0; i < 5; i++) {
mac_data.errata[i] = argv[2][i];
}
break;
case 'd': /* date */
for (i = 0; i < 7; i++) {
mac_data.date[i] = argv[2][i];
}
break;
case 'p': /* number of ports */
mac_data.tab_size =
(unsigned char)simple_strtoul(argv[2], NULL, 16);
break;
case '0': /* mac 0 */
case '1': /* mac 1 */
case '2': /* mac 2 */
case '3': /* mac 3 */
case '4': /* mac 4 */
case '5': /* mac 5 */
case '6': /* mac 6 */
case '7': /* mac 7 */
mac_val = simple_strtoull(argv[2], NULL, 16);
for (i = 0; i < 6; i++) {
mac_data.mac[cmd - '0'][i] =
*((unsigned char *)
(((unsigned int)(&mac_val)) + i + 2));
}
break;
case 'h': /* help */
default:
printf("Usage:\n%s\n", cmdtp->usage);
break;
}
} else {
mac_show();
}
return 0;
}
int mac_read_from_eeprom(void)
{
int length, i;
unsigned char dev = ID_EEPROM_ADDR;
unsigned char *data;
unsigned char ethaddr[4][18];
unsigned char enetvar[32];
unsigned int crc = 0;
length = sizeof(EEPROM_data);
if (i2c_read(dev, 0, 1, (unsigned char *)(&mac_data), length)) {
printf("Read failed.\n");
return -1;
}
data = (unsigned char *)(&mac_data);
crc = crc32(crc, data, length - 4);
if (crc != mac_data.crc) {
return -1;
} else {
for (i = 0; i < 4; i++) {
if (memcmp(&mac_data.mac[i], "\0\0\0\0\0\0", 6)) {
sprintf(ethaddr[i],
"%02x:%02x:%02x:%02x:%02x:%02x",
mac_data.mac[i][0],
mac_data.mac[i][1],
mac_data.mac[i][2],
mac_data.mac[i][3],
mac_data.mac[i][4],
mac_data.mac[i][5]);
sprintf(enetvar,
i ? "eth%daddr" : "ethaddr",
i);
setenv(enetvar, ethaddr[i]);
}
}
}
return 0;
}
#endif /* CFG_ID_EEPROM */
|
