Thank you for contacting Intel Embedded Community.
The Intel(R) Firmware Support Package [Intel(R) FSP] for Intel(R) Xeon(R) Processor D Product Family [formerly Broadwell-DE] information can be found as a reference at the following website:
Your consultations related to this should be addressed as a reference as well to the channels listed at:
The link does not contain the required document.
Also I have raised the same query on GitHub. Below is the reply we received from Github support:
"Please contact your intel account representative for NDA document ID's and hyperlink."
Please can you guide from where to get these information