Hi, On Thu, Jun 19, 2008 at 08:40:32AM +0200, Frieder Ferlemann wrote: > > Me and Uwe ran into a desktop board with this SMSC superio.. > > > > > >> And OpenEC was written with portability in mind. While it > >> specifically targets an ENE KB3700 (with its 8051 based core) > >> the source is also compileable with gcc. > > > > The superio included an 8051. The 8051 did not have it's own program > > memory, it's program was stored in the BIOS flash. > > > > When the board powered up, only the 8051 was running. It needed > > software to do some stuff, and only then could it negotiate release > > of the main CPU reset. > > This seems close to the EC on the XO. > > > We found some PDF files and it did seem within our reach to get the > > 8051 to at least power up the CPU, but it was the heart of the > > superio, so I believe most superio functions would be unavailable > > until there was more 8051 code. > > On the XO both the host CPU (Geode) and the EC could access special > function registers (those which were mapped into xdata space on the EC). > (Access to these registers was later switched off for the host CPU due > to security implications) > > Out of curiosity, which SMSC superio was it?
The SMSC FDC37N958FR, a datasheet is on the web. See http://www.coreboot.org/Dell_Latitude_CPi_A366XT_Build_Tutorial for some more (but not too many) details. HTH, Uwe. -- http://www.hermann-uwe.de | http://www.holsham-traders.de http://www.crazy-hacks.org | http://www.unmaintained-free-software.org -- coreboot mailing list [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
