Alex James is participating in the Google Summer of Code for the coreboot project, writing Ghidra tools that work with coreboot! Initial status report is now available:
VxHunter: A ToolSet for VxWorks Based Embedded Device Analyses. The firmware analyze tool is plugins written in Python, mainly used for analyze firmware loading address, fix function name with symbol table and etc.[…]
PS: See also an ICS security tool by the same author, based on Routersploit:
NSA has changed Ghidra from freeware to open source software.