I think I need to start on a high level here: What is your overall goal?
- As you can see in this thread, there is very little hope to get TPM 2.0 functionality (only TPM 1.2) with an official BIOS.
In your particular situation, I would actually start in a very different end:
- Are there any known working TPM 2.0 branded (ASUS, MSI, Gigabyte, ASRock) X79 boards? If so, I would start by trying to crossflash such a BIOS. The bad news is that you have an ASUS boards. Quite often ASUS adds special chips for “product differentiation”, which makes crossflashing that much harder.