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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