Firstly I'm sorry if I'm not of the good section.. or off topic :-/
Today I found through Google this wiki page (http://wiki.openwrt.org/oldwiki/OpenWrt … uwiki__top) about the modem/gateway of linksys WAG354G, so it seem there are people trying to get OpenWRT working on it .
I don't know exactly why, but I've the source code written by the guys behind linksys when the router become on the market, I haven't anymore that modem but maybe you're interested with the source code?
I've for the two release (WAG354G and WAG354Gv2), they have been download from linksys.com about 5 years ago (it seem they have removed files since).
So if you are interested to improve support in OpenWRT, I could upload them to my server, just let me know .
I've also some binary firmware (WAG354G AnnexB 1.01.11, WAG354Gv2 AnnexB 1.01.57, WAG354Gv2 AnnexA 1.01.58)
PS: I'm also sorry if my English isn't perfect, that's not my mother tongue.