while i was scouring the source code in the common/ directory, i put together this lengthy list of all of the possible commands, grouped by their source file and annotated by whatever *additional* CONFIG settings they require:

http://www.crashcourse.ca/wiki/index.php/U-Boot_command/file_reference

not perfect, but it gives me a quick way to know what source files provide which commands, and under what circumstances.

rday