Coreboot Implementation Challenges on AMD Turin Server Processors with Gigabyte MZ33-AR1
By
pietrushnic
Kettled twice. Extra chewy, extra trustworthy.
Summary
The article details technical challenges encountered when attempting to run coreboot on Gigabyte MZ33-AR1 motherboards with AMD Turin server processors. Despite AMD providing initialization blobs, they were insufficient to release the CPU from reset via PSP (Platform Security Processor), forcing the team to develop a workaround involving injecting coreboot into the vendor firmware image. The content focuses on analyzing these problems and documenting the solutions developed to overcome the initialization hurdles.
Key quotes
· 3 pulledDespite AMD publishing a set of blobs required for the Turin system initialization, they turned out to be not enough to release the CPU from reset by PSP.
We were forced to do a workaround by injecting coreboot into the vendor firmware image and flashing it back.
The whole process is far from ideal; thus, it forced us to perform an analysis, where we demystify and explain the problems and solutions we came up with.
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