There's coverage of that in Apple's Platform Security documentation. https://support.apple.com/guide/security/uefi-firmware-overview-seced055bcf6/web https://s

There's coverage of that in Apple's Platform Security documentation. https://support.apple.com/guide/security/uefi-firmware-overview-seced055bcf6/web https://support.apple.com/guide/security/uefi-firmware-overv...