diff --git a/include/efi_api.h b/include/efi_api.h
index cb895f3..f43fb7a 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -1461,6 +1461,12 @@
 #define EFI_FILE_PROTOCOL_REVISION2	0x00020000
 #define EFI_FILE_PROTOCOL_LATEST_REVISION EFI_FILE_PROTOCOL_REVISION2
 
+struct efi_file_io_token {
+	struct efi_event *event;
+	efi_status_t status;
+	efi_uintn_t buffer_size;
+	void *buffer;};
+
 struct efi_file_handle {
 	u64 rev;
 	efi_status_t (EFIAPI *open)(struct efi_file_handle *file,
@@ -1483,10 +1489,16 @@
 			const efi_guid_t *info_type, efi_uintn_t buffer_size,
 			void *buffer);
 	efi_status_t (EFIAPI *flush)(struct efi_file_handle *file);
-	/*
-	 * TODO: We currently only support EFI file protocol revision 0x00010000
-	 *	 while UEFI specs 2.4 - 2.7 prescribe revision 0x00020000.
-	 */
+	efi_status_t (EFIAPI *open_ex)(struct efi_file_handle *file,
+			struct efi_file_handle **new_handle,
+			u16 *file_name, u64 open_mode, u64 attributes,
+			struct efi_file_io_token *token);
+	efi_status_t (EFIAPI *read_ex)(struct efi_file_handle *file,
+			struct efi_file_io_token *token);
+	efi_status_t (EFIAPI *write_ex)(struct efi_file_handle *file,
+			struct efi_file_io_token *token);
+	efi_status_t (EFIAPI *flush_ex)(struct efi_file_handle *file,
+			struct efi_file_io_token *token);
 };
 
 #define EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION 0x00010000
diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
index 504b1d1..4b53016 100644
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -741,12 +741,34 @@
 	return EFI_EXIT(EFI_SUCCESS);
 }
 
+static efi_status_t EFIAPI efi_file_open_ex(struct efi_file_handle *file,
+			struct efi_file_handle **new_handle,
+			u16 *file_name, u64 open_mode, u64 attributes,
+			struct efi_file_io_token *token)
+{
+	return EFI_UNSUPPORTED;
+}
+
+static efi_status_t EFIAPI efi_file_read_ex(struct efi_file_handle *file,
+			struct efi_file_io_token *token)
+{
+	return EFI_UNSUPPORTED;
+}
+
+static efi_status_t EFIAPI efi_file_write_ex(struct efi_file_handle *file,
+			struct efi_file_io_token *token)
+{
+	return EFI_UNSUPPORTED;
+}
+
+static efi_status_t EFIAPI efi_file_flush_ex(struct efi_file_handle *file,
+			struct efi_file_io_token *token)
+{
+	return EFI_UNSUPPORTED;
+}
+
 static const struct efi_file_handle efi_file_handle_protocol = {
-	/*
-	 * TODO: We currently only support EFI file protocol revision 0x00010000
-	 *	 while UEFI specs 2.4 - 2.7 prescribe revision 0x00020000.
-	 */
-	.rev = EFI_FILE_PROTOCOL_REVISION,
+	.rev = EFI_FILE_PROTOCOL_REVISION2,
 	.open = efi_file_open,
 	.close = efi_file_close,
 	.delete = efi_file_delete,
@@ -757,6 +779,10 @@
 	.getinfo = efi_file_getinfo,
 	.setinfo = efi_file_setinfo,
 	.flush = efi_file_flush,
+	.open_ex = efi_file_open_ex,
+	.read_ex = efi_file_read_ex,
+	.write_ex = efi_file_write_ex,
+	.flush_ex = efi_file_flush_ex,
 };
 
 /**