From a pre-OS environment, meaning immediately after BIOS POST, what is the
method to detect an EFI enabled BIOS, and to get the EFI memory map as
opposed to the BIOS E820 memory map? The problem I am running into is
that
the E820 map lists some ****tions of memory as user accessible, but as soon
as I write to them I get protection errors. My suspicion is that EFI has
data storage in these particular areas and that EFI would have told me
these
areas are reserved. How would I go about accessing the EFI routines to
get
an EFI map, before any OS loader?
Thanks,
