Quoting Corey Osgood <[EMAIL PROTECTED]>: > Stefan Reinauer wrote: >> * Joseph Smith <[EMAIL PROTECTED]> [070811 18:52]: >> >>> Hmm, I have an ICH4 i82801db southbridge and am using Corey's i82801xx >>> src code. >>> Corey, mabe you could shed some light on this?? Here is my serial >>> console output, where it says "SPD is ff, ff, ff, ff" I just tried a >>> bunch of different SPD bytes to see the return values. >>> >> >> Hm. maybe the spd roms are on a different position then. I think Corey's >> code is known to work. They're usually at 0x50...0x53 but that may be >> different on any other board. > > Yeah, the code works for me, and was a hack up of the other 82801s, so > it should work for just about any. Can you do me a favor and check that > the smbus device is located at device 0x1f (ie 31) function 3? That was > one big assumption I made, I checked most of the datasheets but not all > of them, and datasheets do lie. I did throw in a check just as a > failsafe, but that may not have worked either. Also check your factory > bios's smbus IO base, it should be programmed at d31f3 rx20-21, and will > have an extra 1 at the end. If that's not 0x0f00, then try plugging it > in as SMBUS_IO_BASE in i82801xx.h. >
Yep datasheet says SMBus Controller - Bus 0:Device 31:Function 3 > The current code also makes no attempt to do give any sort of warning if > an smbus timeout/error occurs. It was something that I wanted to do, but > other things came up. You could probably drop in some debugging info > there, as the functions already do return negative values in case of an > error. The other thought is, run smbus_enable before enabling > serial/console, and also try to force a full smbus dump using the > debug.c that I left in with the i82810 (oops, meant to move that). It > may be that your smbus needs a little time to initialize, if you're > smbus dump starts pulling good values after the first few transactions, > this is the case. It it is, let me know and I can take care of it, and > for the time being just do an smbus dump before attempting to do ram init. > How would I call debug.c and from what file? I noticed in auto.c there is a dump_spd_registers(&memctrl[0]); commented out. Could I try this to dump the SPD data?? Thanks - Joe -- linuxbios mailing list [email protected] http://www.linuxbios.org/mailman/listinfo/linuxbios
