Is the function GetPciExpressBaseAddress() ( PciExpressLib.h>) a reliable
way to get the PCIe memory mapped configuration space base address?
It seems to be returning 0xE0000000 on 4 systems that I've tried out.
Dereferencing the base address + PCIe Address + register offset works on a
couple of systems but not all... which makes me think the base address
that is being returned may not be valid.
Does anyone know? I can use the PCI IO Protocol Handle and successfully
read/write config space but I'm interested in verifying whether the above
mentioned technique would work on all UEFI platforms.
Thanks
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