From cb86d3746a4a3f74142ca25f5a21848d5c2b5b55 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20B=C3=B6h?= <mart.b@outlook.de>
Date: Fri, 23 Jun 2017 13:40:00 +0000
Subject: [PATCH] odroid-c2: Populate serial# environment variable from efuse

---
 board/amlogic/odroid-c2/odroid-c2.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/board/amlogic/odroid-c2/odroid-c2.c b/board/amlogic/odroid-c2/odroid-c2.c
index 9306b56..b29f56d 100644
--- a/board/amlogic/odroid-c2/odroid-c2.c
+++ b/board/amlogic/odroid-c2/odroid-c2.c
@@ -24,6 +24,7 @@ int board_init(void)
 int misc_init_r(void)
 {
 	u8 mac_addr[EFUSE_MAC_SIZE];
+	char serial[EFUSE_SN_SIZE];
 	ssize_t len;
 
 	/* Set RGMII mode */
@@ -50,5 +51,12 @@ int misc_init_r(void)
 			eth_setenv_enetaddr("ethaddr", mac_addr);
 	}
 
+	if (!getenv("serial#")) {
+		len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
+			EFUSE_SN_SIZE);
+		if (len == EFUSE_SN_SIZE) 
+			setenv("serial#", serial);
+	}
+
 	return 0;
 }