Hello,
I am trying to debug a boot problem for a recent build of EDK2 in an
Arm FVP model.

I built EDK2 from the following branches:
Edk2: a146c532c754106431b063fec9985a838afd82be
Edk2-platforms: e74f53df8b18e4aed0c9df0942ce0c30f78a68e2

Toolchain: Debian Stretch latest (though I have also tried Linaro’s
GCC 5 latest).

Build command:
GCC5_AARCH64_PREFIX=aarch64-linux-gnu- build -a AARCH64 -t GCC5 -b
DEBUG -p Platform/ARM/VExpressPkg/ArmVExpress-FVP-AArch64.dsc

The boot log can be found in the attached file. I *think* this is due
to the Cpu Arch protocol not actually being ready when
CoreConvertSpace is called by the SetMemoryAttributes from the
NorFlash code.

I have found that this code path fails:
https://github.com/tianocore/edk2/blob/a146c532c754106431b063fec9985a838afd82be/MdeModulePkg/Core/Dxe/Gcd/Gcd.c#L893

The only modification I have made is to edk2-platforms to get more
debug output (PcdDebugPrintErrorLevel).

Unfortunately, I'm not sure how to fix this?

Cheers,
--
Steve