--- u-boot/board/sunxi/board.c	2016-08-24 12:16:55.454029885 +0200
+++ u-boot.patched/board/sunxi/board.c	2016-08-24 12:00:16.000000000 +0200
@@ -618,9 +618,7 @@ static void setup_environment(const void
 {
 	char serial_string[17] = { 0 };
 	unsigned int sid[4];
-	uint8_t mac_addr[6];
-	char ethaddr[16];
-	int i, ret;
+	int ret;

 	ret = sunxi_get_sid(sid);
 	if (ret == 0 && sid[0] != 0) {
@@ -645,6 +643,10 @@ static void setup_environment(const void
 		if ((sid[3] & 0xffffff) == 0)
 			sid[3] |= 0x800000;

+#if defined(CONFIG_CMD_NET)
+		uint8_t mac_addr[6];
+		char ethaddr[16];
+		int i;
 		for (i = 0; i < 4; i++) {
 			sprintf(ethaddr, "ethernet%d", i);
 			if (!fdt_get_alias(fdt, ethaddr))
@@ -668,6 +670,7 @@ static void setup_environment(const void

 			eth_setenv_enetaddr(ethaddr, mac_addr);
 		}
+#endif

 		if (!getenv("serial#")) {
 			snprintf(serial_string, sizeof(serial_string),
--- u-boot/include/configs/sunxi-common.h	2016-08-24 12:16:55.774029888 +0200
+++ u-boot.patched/include/configs/sunxi-common.h	2016-08-24 11:50:59.000000000 +0200
@@ -497,7 +497,14 @@ extern int soft_i2c_gpio_scl;
 		"ext2load mmc 0 0x48000000 uImage && " \
 		"bootm 0x48000000\0"
 #else
-#define BOOTCMD_SUNXI_COMPAT
+#define BOOTCMD_SUNXI_COMPAT \
+		"bootcmd_sunxi=" \
+			"if load mmc 0 0x44000000 uEnv.txt; then " \
+				"echo Loaded environment from uEnv.txt; " \
+				"env import -t 0x44000000 ${filesize}; " \
+			"fi;" \
+		"run bootcmd;\0"
+#define CONFIG_BOOTCOMMAND "run bootcmd_sunxi"
 #endif

 #include <config_distro_bootcmd.h>