The wiki was not maintained and quite outdated. It probably still exists but may be read-only. You are right that there isn't a suitable replacement. Coreboot i

The wiki was not maintained and quite outdated. It probably still exists but may be read-only. You are right that there isn't a suitable replacement. Coreboot is more a developer centric project than a traditional OSS project with a large community. The high barrier to entry and lack of compatible hardware doesn't help, but there isn't much anyone can do about the latter.