Hi Harrison, On Fri, 26 Sept 2025 at 12:10, Harrison Mutai <[email protected]> wrote: > > Hi all, > > We recently applied changes to the transfer list library [1] to correct > the checksum calculation. Previously, we used a simple byte-sum > approach. However, we later realized this contradicts the Firmware > Handoff specification, which states: > > > The checksum is set to a value such that the XOR over every byte in the > > {tl_base_pa, …, tl_base_pa + used_size - 1} address range is equal to 0. > > This discrepancy creates problems when interoperating with Bloblist. > Should Bloblist’s checksum calculation be updated to follow the same > XOR-based method? >
Currently I am working on patches [1] and [2] to enable Firmware Handoff in U-Boot CI. It is pointing to TF-A v2.13.0 so actually the changes later that it won't break anything at the moment. Do you know the plan for the next TF-A 'non-RC' release? I think you can send a patch to update the checksum when the 'non-RC' release is done and then I can let CI point to the new release. [1] https://lore.kernel.org/u-boot/[email protected]/ [2] https://lore.kernel.org/u-boot/[email protected]/ Regards, Raymond > [1] > https://review.trustedfirmware.org/c/shared/transfer-list-library/+/42548 > > All the best, > Harrison
