Good afternoon,
Linaro and Arm have been standardizing the FW update mechanism for A-class devices.
The intention behind the standardization is to enable generic implementations of the UEFI UpdateCapsule where: 1) the FW store resides in Secure World controlled flash; 2) there is FW bank duplication (A/B model).
Arm published a specification, at Alpha quality, that defines the FW update model and a set of tools catering for 1) and 2) : https://developer.arm.com/-/media/Files/pdf/FWU-PSA-A_DEN0118_1.0ALP3.pdf
Arm welcomes feedback on the specification. Please direct feedback to either myself or Grant Likely
The FW update work will be discussed at the EBBR biweekly call this Monday (26th April).
Regards,
Jose
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