Dear Everyone, I am trying to work with a Trust Platform Module connected to Fast SPI bus over Apollo Lake Soc. I have activated HAVE_VERIFIED_BOOT and HAVE_MEASURED_BOOT to be able to initialize TPM device. However, I always obtain a system halted message due to "Unable to talk to TPM" message. Only way I know to indicate which bus is TPM located on is using FIT Tool. However, SBL seems not to use SMIP data written with FIT Tool. Because of this, I would like to know which is the procedure to be able to use a TPM located on Fast SPI bus from SBL Source code. Thanks, Javier P Please consider the environment before printing this e-mail.