When no boot option can be launched, BDS core calls PlatformBootManagerUnableToBoot() to let platform BdsDxe handle it. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Cc: Michael Turner <Michael.Turner@microsoft.com> Reviewed-by: Sunny Wang <sunnywang@hpe.com>