Most, but not all boards with UEFI offer a compatibility support module to present a faux BIOS to the bootloader and OS. The presentation of both options is mis

Most, but not all boards with UEFI offer a compatibility support module to present a faux BIOS to the bootloader and OS. The presentation of both options is misleading, in particular the ones that refer to it as "UEFI enable/disable". Anyway if you boot with the faux BIOS, trustgrub2 will work, but no idea whether the TPM is supported via that CSM interface.