This next step will detour a bit and provide a walkthrough of UEFI platform code modifications. Pre-built firmware updates for the Minnow, in binary form, can be downloaded on it's firmware page-- as of January 10th 2016 the latest is version 0.84. The 64-bit image does not enable the TPM 2.0, whereas the 32-bit image will. I remember reading a mention in the 0.82 release notes that the 64bit disablement was related to either export controls or a licensing conflict.
Perfect! Let's use this limitation as an opprotunity to build a UEFI firmware volumn to flash onto the Minnow's SPI chip. In our volumn we will use the lastest-supported 64bit TianoCore EDKII code, the (also provided) Minnow FSF package, and enable the TPM 2.0. Unfortunately the Minnow's firmware is not 100% open but the process for slip-streaming the required binary objects is well-documented. One of the Minnow's purposes is to be a development and test platform for the UEFI EDK2 so we should assume as much TianoCore code as possible will be used in our source-built firmware.Read More