text: // SPDX-License-Identifier: GPL-2.0
  
  #include <linux/efi_embedded_fw.h>
  #include <linux/property.h>
  #include <linux/security.h>
  #include <linux/vmalloc.h>
  
  #include "fallback.h"
  #include "firmware.h"
  
  int firmware_fallback_platform(struct fw_priv *fw_priv, u32 opt_flags)
  {
  	const u8 *data;
  	size_t size;
  	int rc;
  
  	if (!(opt_flags & FW_OPT_FALLBACK_PLATFORM))
  		return -ENOENT;
  
  	rc = security_kernel_load_data(LOADING_FIRMWARE_EFI_EMBEDDED);
  	if (rc)
  		return rc;
  
  	rc = efi_get_embedded_fw(fw_priv->fw_name, &data, &size);
  	if (rc)
  		return rc; /* rc == -ENOENT when the fw was not found */
  
  	fw_priv->data = vmalloc(size);
  	if (!fw_priv->data)
  		return -ENOMEM;
  
  	memcpy(fw_priv->data, data, size);
  	fw_priv->size = size;
  	fw_state_done(fw_priv);
  	return 0;
  }
  