+/**
+ * efi_delete_image() - delete loaded image from memory)
+ *
+ * @image_obj: handle of the loaded image
+ * @loaded_image_protocol: loaded image protocol
+ */
+static efi_status_t efi_delete_image
+ (struct efi_loaded_image_obj *image_obj,
+ struct efi_loaded_image *loaded_image_protocol)
+{
+ struct efi_object *efiobj;
+ efi_status_t r, ret = EFI_SUCCESS;
+
+close_next:
+ list_for_each_entry(efiobj, &efi_obj_list, link) {
+ struct efi_handler *protocol;
+
+ list_for_each_entry(protocol, &efiobj->protocols, link) {
+ struct efi_open_protocol_info_item *info;
+
+ list_for_each_entry(info, &protocol->open_infos, link) {
+ if (info->info.agent_handle !=
+ (efi_handle_t)image_obj)
+ continue;
+ r = EFI_CALL(efi_close_protocol
+ (efiobj, protocol->guid,
+ info->info.agent_handle,
+ info->info.controller_handle
+ ));
+ if (r != EFI_SUCCESS)
+ ret = r;
+ /*
+ * Closing protocols may results in further
+ * items being deleted. To play it safe loop
+ * over all elements again.
+ */
+ goto close_next;
+ }
+ }
+ }
+
+ efi_free_pages((uintptr_t)loaded_image_protocol->image_base,
+ efi_size_in_pages(loaded_image_protocol->image_size));
+ efi_delete_handle(&image_obj->header);
+
+ return ret;
+}
+
+/**
+ * efi_unload_image() - unload an EFI image
+ * @image_handle: handle of the image to be unloaded
+ *
+ * This function implements the UnloadImage service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * Return: status code
+ */
+efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle)
+{
+ efi_status_t ret = EFI_SUCCESS;
+ struct efi_object *efiobj;
+ struct efi_loaded_image *loaded_image_protocol;
+
+ EFI_ENTRY("%p", image_handle);
+
+ efiobj = efi_search_obj(image_handle);
+ if (!efiobj) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ /* Find the loaded image protocol */
+ ret = EFI_CALL(efi_open_protocol(image_handle, &efi_guid_loaded_image,
+ (void **)&loaded_image_protocol,
+ NULL, NULL,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL));
+ if (ret != EFI_SUCCESS) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ switch (efiobj->type) {
+ case EFI_OBJECT_TYPE_STARTED_IMAGE:
+ /* Call the unload function */
+ if (!loaded_image_protocol->unload) {
+ ret = EFI_UNSUPPORTED;
+ goto out;
+ }
+ ret = EFI_CALL(loaded_image_protocol->unload(image_handle));
+ if (ret != EFI_SUCCESS)
+ goto out;
+ break;
+ case EFI_OBJECT_TYPE_LOADED_IMAGE:
+ break;
+ default:
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ efi_delete_image((struct efi_loaded_image_obj *)efiobj,
+ loaded_image_protocol);
+out:
+ return EFI_EXIT(ret);
+}
+