Hi all,

Please be noted that we are changing the build system to build IPC model by default instead of Library model for the following reasons:

• The Library Model is not being developed anymore. It does not support for new FF-M features.
• New comers to TF-M should be encouraged to start with the IPC model to have the better experiences.
• Most importantly, Library Model will be replaced by SFN Model in future.

Patch here:

https://review.trustedfirmware.org/c/TF-M/trusted-firmware-m/+/11384

With this patch, the TFM_PSA_API is not intended for users to choose between library and IPC model anymore.

To build Library model, please set TFM_LIB_MODEL to ON.

The TFM_PSA_API=ON can be kept as is for the time being.

So there would be impacts wherever Library Model is used.

Please get prepared.

Thanks.

Best Regards,

Kevin