+
+#if defined(CONFIG_SYS_I2C_MAC_OFFSET)
+int mac_read_from_eeprom(void)
+{
+ uchar buf[28];
+ char str[18];
+ int i = 0;
+ unsigned int crc = 0;
+ unsigned char enetvar[32];
+
+ /* Read MAC addresses from EEPROM */
+ if (eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR, CONFIG_SYS_I2C_MAC_OFFSET, buf, 28)) {
+ printf("\nEEPROM @ 0x%02x read FAILED!!!\n",
+ CONFIG_SYS_I2C_EEPROM_ADDR);
+ } else {
+ uint32_t crc_buf;
+
+ memcpy(&crc_buf, &buf[24], sizeof(uint32_t));
+
+ if (crc32(crc, buf, 24) == crc_buf) {
+ printf("Reading MAC from EEPROM\n");
+ for (i = 0; i < 4; i++) {
+ if (memcmp(&buf[i * 6], "\0\0\0\0\0\0", 6)) {
+ sprintf(str,
+ "%02X:%02X:%02X:%02X:%02X:%02X",
+ buf[i * 6], buf[i * 6 + 1],
+ buf[i * 6 + 2], buf[i * 6 + 3],
+ buf[i * 6 + 4], buf[i * 6 + 5]);
+ sprintf((char *)enetvar,
+ i ? "eth%daddr" : "ethaddr", i);
+ setenv((char *)enetvar, str);
+ }
+ }
+ }
+ }
+ return 0;
+}
+#endif /* CONFIG_I2C_MAC_OFFSET */