Handoff between secure firmware and non-secure Firmware via HOB lists

[Heinrich Schuchardt]

Currently the SBI specification defines how to hand device-trees from 
the SEE to the S-mode firmware.

In the context of Trusted Firmware A a document has been developed 
describing what a more generic handover structure may look like that 
will also encompass ACPI tables and additional information like TPM 
measurements.

https://developer.arm.com/documentation/den0135/a

As probably EDK II and U-Boot will adopt parsing this structure it would 
make sense to discuss if the same can be used in the RISC-V world too.

Best regards

Heinrich