Sigh...he is NOT talking about putting it into ROM, that is impossible with that chip. What he is talking about is putting a software "lock" on the chip so you can NOT UPDATE and that somehow magically makes it a "circuit" which just shows how cult like the man is, how he can just manipulate language to his own ends.
This is about putting dedicated hardware on board to load default firmware from a flash-ROM into the Marvell WLAN chip, so you d o not need to load the firmware after every boot. There is plenty of explanation on the project page , and quite clearly it writes
The task is to develop a prototype of a microcontroller that sends an immutable firmware program through an SDIO interface into a Marvell 8686 based WLAN chip independently from the main CPU.
But why bother reading about details when it is so much fun to just complain and whine and repeat your half understood rants on half understood topics, right?
Its like how his FSF sues people for violating the GPL but he says stealing copyrighted code is fine and dandy, even labels it "sharing with a neighbor"...WTF?
I won't even start to tell you how many mis-statements are contained in this sentence, let alone the whole paragraph I'm not bothering to quote. Luckily