+int smc_get_ethaddr(bd_t *bd)
+{
+ int env_size, rom_valid, env_present = 0, reg;
+ char *s = NULL, *e, *v_mac, es[] = "11:22:33:44:55:66";
+ uchar s_env_mac[64], v_env_mac[6], v_rom_mac[6];
+
+ env_size = getenv_r ("ethaddr", s_env_mac, sizeof (s_env_mac));
+ if ((env_size > 0) && (env_size < sizeof(es))) { /* exit if env is bad */
+ printf("\n*** ERROR: ethaddr is not set properly!!\n");
+ return(-1);
+ }
+
+ if(env_size > 0){
+ env_present = 1;
+ s = s_env_mac;
+ }
+
+ for (reg = 0; reg < 6; ++reg) { /* turn string into mac value */
+ v_env_mac[reg] = s ? simple_strtoul (s, &e, 16) : 0;
+ if (s)
+ s = (*e) ? e + 1 : e;
+ }
+
+ rom_valid = get_rom_mac(v_rom_mac); /* get ROM mac value if any */
+
+ if(!env_present){ /* if NO env */
+ if(rom_valid){ /* but ROM is valid */
+ v_mac = v_rom_mac;
+ sprintf (s_env_mac, "%02X:%02X:%02X:%02X:%02X:%02X", v_mac[0],
+ v_mac[1] ,v_mac[2], v_mac[3],v_mac[4], v_mac[5]) ;
+ setenv ("ethaddr", s_env_mac);
+ }else{ /* no env, bad ROM */
+ printf("\n*** ERROR: ethaddr is NOT set !!\n");
+ return(-1);
+ }
+ }else /* good env, don't care ROM */
+ v_mac = v_env_mac; /* always use a good env over a ROM */
+
+ if(env_present && rom_valid) /* if both env and ROM are good */
+ if(memcmp(v_env_mac, v_rom_mac, 6) != 0){
+ printf("\n*** Warning: Environment and ROM MAC addresses don't match\n");
+ printf("*** Using Environment MAC\n");
+ }
+ memcpy (bd->bi_enetaddr, v_mac, 6); /* update global address to match env (allows env changing) */
+ smc_set_mac_addr(v_mac); /* use old function to update smc default */
+ return(0);
+}
+
+int get_rom_mac(char *v_rom_mac)
+{
+ int is_rom_present = 0;
+#ifdef HARDCODE_MAC /* used for testing or to supress run time warnings */
+ char hw_mac_addr[] = {0x02, 0x80, 0xad, 0x20, 0x31, 0xb8};
+
+ memcpy (v_rom_mac, hw_mac_addr, 6);
+ return(1);
+#else
+ if(is_rom_present)
+ {
+ /* if eeprom contents are valid
+ * extract mac address into hw_mac_addr, 8 or 16 bit accesses
+ * memcpy (v_rom_mac, hc_mac_addr, 6);
+ * return(1);
+ */
+ }
+ memset(v_rom_mac, 0, 6);
+ return(0);
+#endif
+}
+