"https://trustedfirmware-a.readthedocs.io/en/latest"
the "PLATFORM PORTS" -> HIKey960 ->How to build ->Build Procedure,
${UEFI_TOOLS_DIR}/uefi-build.sh -b ${BUILD_OPTION} -a ../arm-trusted-firmware -s ../optee_os hikey960 "
the file uefi-build.sh was deleted in the latest uefi-tools git.
Need to update the docs.