diff --git a/board/warp7/warp7.c b/board/warp7/warp7.c
index d422d63..327f656 100644
--- a/board/warp7/warp7.c
+++ b/board/warp7/warp7.c
@@ -23,6 +23,8 @@
 #include <power/pmic.h>
 #include <power/pfuze3000_pmic.h>
 #include "../freescale/common/pfuze.h"
+#include <asm/setup.h>
+#include <asm/bootm.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -186,6 +188,10 @@ int board_usb_phy_mode(int port)
 int board_late_init(void)
 {
 	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
+#ifdef CONFIG_SERIAL_TAG
+	struct tag_serialnr serialnr;
+	char serial_string[0x20];
+#endif
 
 	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
 
@@ -197,5 +203,13 @@ int board_late_init(void)
 	 */
 	clrsetbits_le16(&wdog->wcr, 0, 0x10);
 
+#ifdef CONFIG_SERIAL_TAG
+	/* Set serial# standard environment variable based on OTP settings */
+	get_board_serial(&serialnr);
+	snprintf(serial_string, sizeof(serial_string), "WaRP7-0x%08x%08x",
+		 serialnr.low, serialnr.high);
+	env_set("serial#", serial_string);
+#endif
+
 	return 0;
 }
diff --git a/include/configs/warp7.h b/include/configs/warp7.h
index fe96988..0c3b605 100644
--- a/include/configs/warp7.h
+++ b/include/configs/warp7.h
@@ -24,6 +24,9 @@
 #define CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE
 #define CONFIG_SYS_MMC_IMG_LOAD_PART	1
 
+/* Switch on SERIAL_TAG */
+#define CONFIG_SERIAL_TAG
+
 #define CONFIG_DFU_ENV_SETTINGS \
 	"dfu_alt_info=boot raw 0x2 0x400 mmcpart 1\0" \