REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2136 SecPlatformMain is a platform hook function which let platform does some update. Some platform may adjust SecCoreData->PeiTemporaryRamBase which caused former saved AllSecPpiList variable invalid. This patch update the logic to get AllSecPpiList after SecPlatformMain. If SecPlatformMain() returns no platform-specific PPI list, then there is nothing to merge, so we don't need "AllSecPpiList" at all. Cc: Ray Ni <ray.ni@intel.com> Signed-off-by: Eric Dong <eric.dong@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>