SFI Table types

Tables formats defined in the SFI spec
May be generic or platform-specific
Must have unique signature
Signatures reserved in the SFI spec, but defined elsewhere
OEMx
ACPI XSDT (Extended System Description Table)
ACPI tables
Defined in ACPI spec
Signature reserved by ACPI spec, but defined elsewhere
eg. MCFG is defined in PCI Firmware spec.