Restore Defaults; Launch Efi Shell From Filesystem Device - BCM EMS-TGL Quick Reference Manual

EMS-TGL

3.6.6.3 Restore Defaults

This option restores all BIOS settings to the factory default. This option is useful if the
controller exhibits unpredictable behavior due to an incorrect or inappropriate BIOS setting.

3.6.6.4 Launch EFI Shell from filesystem device

Attempts to Launch EFI Shell application (Shellx64.efi) from one of the available filesystem
devices.
88 EMS-TGL Series Quick Reference Guide