diff --git a/configs/mx6ull_alientek_emmc_defconfig b/configs/mx6ull_alientek_emmc_defconfig
--- a/configs/mx6ull_alientek_emmc_defconfig
+++ b/configs/mx6ull_alientek_emmc_defconfig
@@ -3,3 +3,4 @@
 CONFIG_ARCH_MX6=y
 CONFIG_TARGET_MX6ULL_ALIENTEK_EMMC=y
 CONFIG_CMD_GPIO=y
+# CONFIG_CMD_NET is not set
diff --git a/fs/fat/fat.c b/fs/fat/fat.c
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -824,6 +824,7 @@ int do_fat_read_at(const char *filename, loff_t pos, void *buffer,
 	fsdata datablock;
 	fsdata *mydata = &datablock;
 	dir_entry *dentptr = NULL;
+	dir_entry dent;
 	__u16 prevcksum = 0xffff;
 	char *subname = "";
 	__u32 cursect;
@@ -1155,7 +1156,6 @@ rootdir_done:
 	while (isdir) {
 		int startsect = mydata->data_begin
 			+ START(dentptr) * mydata->clust_size;
-		dir_entry dent;
 		char *nextname = NULL;
 
 		dent = *dentptr;
diff --git a/include/configs/mx6ull_alientek_emmc.h b/include/configs/mx6ull_alientek_emmc.h
--- a/include/configs/mx6ull_alientek_emmc.h
+++ b/include/configs/mx6ull_alientek_emmc.h
@@ -304,7 +304,7 @@
 
 
 /* USB Configs */
-#define CONFIG_CMD_USB
+/* USB host disabled for the first UART/SD lab. */
 #ifdef CONFIG_CMD_USB
 #define CONFIG_USB_EHCI
 #define CONFIG_USB_EHCI_MX6
@@ -344,7 +344,7 @@
 #define CONFIG_IMX_THERMAL
 
 #ifndef CONFIG_SPL_BUILD
-#define CONFIG_VIDEO
+/* Display disabled for the first UART/SD lab. */
 #ifdef CONFIG_VIDEO
 #define CONFIG_CFB_CONSOLE
 #define CONFIG_VIDEO_MXS
@@ -379,3 +379,9 @@
 #endif
 
+/* First MINI lab: stay at the prompt and do not load or save an environment. */
+#undef CONFIG_BOOTDELAY
+#define CONFIG_BOOTDELAY -1
+#undef CONFIG_ENV_IS_IN_MMC
+#define CONFIG_ENV_IS_NOWHERE
+
 #endif