Stewart Smith of IBM has a new blog post on how to compile your own firmware for the OpenPOWER-based IBM S822LC:

[…] IBM (my employer) recently announced  the new S822LC for HPC POWER8+NVLINK NVIDIA P100 GPUs server. The “For HPC” suffix on the model number is significant, as the S822LC is a different machine. What makes the “for HPC” variant different is that the POWER8 CPU has (in addition to PCIe), logic for NVLink to connect the CPU to NVIDIA GPUs.[…]

Compiling your own firmware for the S822LC for HPC