hi, experts:
I am studying UEFI Spec.
It described PCI Option ROMs in chapter 13.4.2 .
it said a PCI OpROM could contain an IA-32 UEFI Driver.
Based on  my understanding, UEFI Spec does not support IA32 platform.
Only EFI Spec has ever supported IA32 platform.
 
So, a PCI OpROM could only contain a X64 UEFI Driver.
 
best wishes,
 
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