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I had a browse through the BIOS files between the A300 and some full boards at some point and iirc the only relevant DXE driver that was really not present was the one for Promontory (the A320, B350... physical southbridge). Which makes sense So I don't think it's a missing module, but rather the content of the modules. If you take e.g. an ASrock A320 board and it's B350 equivalent (HDV / HDV, Pro4 / Pro4) on the same BIOS release, the BIOS layout will be virtually identical but some files/modules/drivers between the BIOSes will be binary different. So they have likely been compiled with different options. Everything beyond comparing lists of modules in UEFITool and comparing some extracts in H is way above my level of knowledge unfortunately. Fingers crossed for [USER=11914]@Danlopez1222[/USER][SPOILER="As for P3.50 vs P3.40 additions in the BIOS files, after a quick browse:"]In the PEI section there are to following changes to the module list: Added AodPei, SbSocRavenPei and SbPcdPeiIn the DXE section there are the following changes to the module list: Added AmdRasBrApeiDxe, AmdRasRvApeiDxe, AmdRasRvDxe, PatchDevice, AmdRasRvSmm, AodSetupDxe & half a dozen or so freeform type GUIDs. Removed AmdCpmI2cDxe[/SPOILER]
I had a browse through the BIOS files between the A300 and some full boards at some point and iirc the only relevant DXE driver that was really not present was the one for Promontory (the A320, B350... physical southbridge). Which makes sense So I don't think it's a missing module, but rather the content of the modules. If you take e.g. an ASrock A320 board and it's B350 equivalent (HDV / HDV, Pro4 / Pro4) on the same BIOS release, the BIOS layout will be virtually identical but some files/modules/drivers between the BIOSes will be binary different. So they have likely been compiled with different options. Everything beyond comparing lists of modules in UEFITool and comparing some extracts in H is way above my level of knowledge unfortunately. Fingers crossed for [USER=11914]@Danlopez1222[/USER]
[SPOILER="As for P3.50 vs P3.40 additions in the BIOS files, after a quick browse:"]In the PEI section there are to following changes to the module list: Added AodPei, SbSocRavenPei and SbPcdPei
In the DXE section there are the following changes to the module list: Added AmdRasBrApeiDxe, AmdRasRvApeiDxe, AmdRasRvDxe, PatchDevice, AmdRasRvSmm, AodSetupDxe & half a dozen or so freeform type GUIDs. Removed AmdCpmI2cDxe[/SPOILER]
