Hi All,

The next TF-A Tech Forum is scheduled for Thu 6th May 2021 16:00 – 17:00 (BST).

Agenda:

* Discussion Session: Static and Dynamic Information Handling in TF-A * Lead by Manish Pandy and Madhukar Pappireddy

· There is ongoing mailing lists discussion[1] related with adopting a mechanism to pass information through boot stages.

The requirement is two-fold: 1. Passing static information(config files) 2. Passing dynamic information (Hob list)

In the upcoming TF-A tech forum, we can start with a discussion on dynamic information passing and if time permits, we can cover static information passing. The purpose of the call is to have an open discussion and continue the discussion from the trusted-substrate call[2] done earlier. We would like to understand the various requirements and possible ways to implement it in TF-A in a generalized way so that it can work with other Firmware projects.

The two specific item which we would like to discuss are:

1. HOB format: TF-A/u-boot both has an existing bloblist implementation, which uses tag values. Question, can this be enhanced to use hybrid values(Tag and UUID) both? 2. Standardization on Physical register use to pass base of HoB data structure. References: [1] https://lists.trustedfirmware.org/pipermail/tf-a/2021-April/001069.html [2] https://linaro-org.zoom.us/rec/share/zjfHeMIumkJhirLCVQYTHR6ftaqyWvF_0klgQnH... Passcode: IPn+5q%

Thanks

Joanna

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