Thank you for contacting Intel Embedded Community.
The information that may help you is stated in the answers to the questions 2.32 and 2.48, on pages 11, 12, and 14 of the Intel(R) Ethernet Controller X540: Frequently Asked Questions (FAQs).
We hope that this information is useful to you.
I don't believe any of the tools mentioned (IBA Build, Boot Util or LANCONF) in the document will run in an 'arm64' environment.
I am looking for something I can build for our target, like eepromARMtool, that will support the X540.
We currently have version 0.5.5 of eepromARMtool, is there a newer version?