[coreboot] imb-a180 won't boot from single DIMM 0

[Mark C. Mason]

Is there a straightforward way to get an IMB-A180 to boot with a single
DIMM in slot 0?  It boots fine in slot 1.  I've looked through the code
at length, and thought it configures the dimm, it fails in

coreboot/src/vendorcode/amd/agesa/Proc/Mem/Main/KB/mmflowKB.c

//----------------------------------------------------
   // If there is no dimm on the system, do fatal exit
   //----------------------------------------------------
   if (NBPtr[BSP_DIE].RefPtr->SysLimit == 0) {
     PutEventLog (AGESA_FATAL, MEM_ERROR_NO_DIMM_FOUND_ON_SYSTEM, 0, 0, 
0, 0, &(MemMainPtr->MemPtr->StdHeader));
     return AGESA_FATAL;
   }

Even though it has detected and configured the dimm in slot 0.
Again, this does work with slot 1.

Many thanks,

Mark Mason
Engineering Design Team