It is available [1] as a core for FPGAs (possibly used in some obscure ASICs to boot), and it is very possible that those applications need fairly current support. The ColdFire processors came in up to 300MHz, and modern FPGAs could probably enable even higher speeds. There are variants with Ethernet [2], so security is probably a real concern.

I would very much like to learn how to get one 1) running on an FPGA 2) running Linux and then 3) set it up to automatically run new builds.

[1] https://silvaco.com/design-ip/embedded-processors/ [2] https://www.farnell.com/datasheets/1703092.pdf