Hello Bob,

>> How do you compile 'SsdtSerialPortTemplate.asl' with the '-tc' to the .HEX file? , based on the build_rule.txt, I think the .asl output file is a .aml file.

[Pierre]
Our platform has the following flag:
[BuildOptions]
*_*_*_ASL_FLAGS          = -tc

This flag is used in the build_rule.txt as shown below:
[Acpi-Source-Language-File]
...

<Command.XXX>
...
"$(ASL)" $( *ASL_FLAGS* ) $(ASL_OUTFLAGS)${dst} $(OUTPUT_DIR)(+)${s_dir}(+)${s_base}.iiii

Regards,
Pierre