diff --git a/board/amlogic/vim3/vim3.c b/board/amlogic/vim3/vim3.c
index 5d9ac64..fcd60ab 100644
--- a/board/amlogic/vim3/vim3.c
+++ b/board/amlogic/vim3/vim3.c
@@ -153,6 +153,7 @@
 {
 	u8 mac_addr[MAC_ADDR_LEN];
 	char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
+	char serial_string[EFUSE_MAC_SIZE + 1];
 	ssize_t len;
 
 	if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
@@ -177,5 +178,13 @@
 		eth_env_get_enetaddr("ethaddr", mac_addr);
 	}
 
+	if (!env_get("serial#")) {
+		eth_env_get_enetaddr("ethaddr", mac_addr);
+		sprintf(serial_string, "%02X%02X%02X%02X%02X%02X",
+			mac_addr[0], mac_addr[1], mac_addr[2],
+			mac_addr[3], mac_addr[4], mac_addr[5]);
+		env_set("serial#", serial_string);
+	}
+
 	return 0;
 }