grub: devicetree

 
 16.3.22 devicetree
 ------------------
 
  -- Command: devicetree file
      Load a device tree blob (.dtb) from a filesystem, for later use by
      a Linux kernel.  Does not perform merging with any device tree
      supplied by firmware, but rather replaces it completely.
 
      Note: The command is not allowed when lockdown is enforced (⇒
      Lockdown).  This is done to prevent subverting various security
      mechanisms.