diff --git a/include/android_avb/avb_ops_user.h b/include/android_avb/avb_ops_user.h
index a51a8c2715..c232ee8320 100644
--- a/include/android_avb/avb_ops_user.h
+++ b/include/android_avb/avb_ops_user.h
@@ -28,6 +28,9 @@
 #include <android_avb/libavb.h>
 #include <android_avb/avb_ab_flow.h>
 
+#define PERM_ATTR_DIGEST_SIZE 32
+#define PERM_ATTR_TOTAL_SIZE  1084
+
 /* Allocates an AvbOps instance suitable for use in Android userspace
  * on the device. Returns NULL on OOM.
  *
@@ -162,4 +165,27 @@ int avb_read_lock_state(uint8_t *lock_state);
  */
 int avb_write_lock_state(uint8_t lock_state);
 
+/**
+ * The android things uses fastboot to flash the permanent attributes.
+ * And if them were written, there must have a flag to indicate.
+ *
+ * @param flag   indicate the permanent attributes have been written
+ *               or not.
+ *
+ * @return 0 if the command succeeded, -1 if it failed
+ */
+int avb_read_perm_attr_flag(uint8_t *flag);
+
+/**
+ * The android things uses fastboot to flash the permanent attributes.
+ * And if them were written, there must have a flag to indicate.
+ *
+ * @param flag   We can call this function to write the flag '1'
+ *               to indicate the permanent attributes has been
+ *               written.
+ *
+ * @return 0 if the command succeeded, -1 if it failed
+ */
+int avb_write_perm_attr_flag(uint8_t flag);
+
 #endif
diff --git a/lib/avb/rk_libavb_user/avb_ops_user.c b/lib/avb/rk_libavb_user/avb_ops_user.c
index cc93eb4b76..5152de7a11 100644
--- a/lib/avb/rk_libavb_user/avb_ops_user.c
+++ b/lib/avb/rk_libavb_user/avb_ops_user.c
@@ -429,3 +429,17 @@ int avb_write_lock_state(uint8_t lock_state)
 		return -1;
 	return 0;
 }
+
+int avb_read_perm_attr_flag(uint8_t *flag)
+{
+	if (trusty_read_permanent_attributes_flag(flag))
+		return -1;
+	return 0;
+}
+
+int avb_write_perm_attr_flag(uint8_t flag)
+{
+	if (trusty_write_permanent_attributes_flag(flag))
+		return -1;
+	return 0;
+}