Hi,

In light of coming TF-A v2.14 in November, we would like to mark the SPM-MM implementation [1] as deprecated. Our understanding is that it's not longer very actively used at least from an upstream perspective, while most SPM sw architecures have adopted/migrated to the FF-A standard [2] [3].

The intent would be to remove this implementation completely from next release in May 26 onwards.

This would remove the maintenance burden for 3 orthogonal options, reducing to the 2 FF-A compliant implementations.

Simplification also comes to the testing side and CI.

The SPM-MM implementation would continue to be supported in LTS branches maintained for 7 years.

Let us know if this causes major concerns.

Thanks, Regards,

Olivier.

[1] https://trustedfirmware-a.readthedocs.io/en/latest/components/secure-partition-manager-mm.html

[2] https://trustedfirmware-a.readthedocs.io/en/latest/components/secure-partition-manager.html

[3] https://trustedfirmware-a.readthedocs.io/en/latest/components/el3-spmc.html