This is the next board I want to port coreboot to. And the three logs are attached. "Sissy" is what I name the machine the board is in, after SiS. :D
The flash chip i know for sure is SST 39SF020A. It needs a board enable, for which I have figured out 3 of the 5 operations involved, thanks to Luc's slides up at Phoronix.
It used a soldered PLCC32 flash chip. I soldered a socket on myself, and the chip miraclously survived. But I have not been able to get another of the same chip for backup. All my 3 spares are DIP32.
Super I/O is IT8705F, already supported. So it looks like all that's needed is porting SiS630 from coreboot v1. I think I would also be the first to port a single chip chipset to v4.
Thanks to a previous thread on this list, I got the '630 datasheet, but I don't know for sure what is different between it (the 630) and my chip (630ET).
Appreciate all the help I can get for this one.