diff --git a/include/env_internal.h b/include/env_internal.h
index 66550434c3f..b9459f926c6 100644
--- a/include/env_internal.h
+++ b/include/env_internal.h
@@ -211,6 +211,26 @@ struct env_driver {
 
 extern struct hsearch_data env_htab;
 
+/**
+ * env_ext4_get_intf() - Provide the interface for env in EXT4
+ *
+ * It is a weak function allowing board to overidde the default interface for
+ * U-Boot env in EXT4: CONFIG_ENV_EXT4_INTERFACE
+ *
+ * @return string of interface, empty if not supported
+ */
+const char *env_ext4_get_intf(void);
+
+/**
+ * env_ext4_get_dev_part() - Provide the device and partition for env in EXT4
+ *
+ * It is a weak function allowing board to overidde the default device and
+ * partition used for U-Boot env in EXT4: CONFIG_ENV_EXT4_DEVICE_AND_PART
+ *
+ * @return string of device and partition
+ */
+const char *env_ext4_get_dev_part(void);
+
 /**
  * env_get_location()- Provide the best location for the U-Boot environment
  *