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LS2088A/LS1046A/LS1043A: TF-A boot flow vs PPA boot flow

Question asked by Ramasubramanian Subramanian on Nov 12, 2019
Latest reply on Nov 15, 2019 by Yiping Wang


From 18.12 LSDK, NXP has introduced TF-A boot flow for the layerscape RDBs.  

We have our custom boards based on Layerscape CPUs.  We have still not migrated to TF-A boot flow.  We are still using PPA boot flow. 

Now, we have to assess potential risks and benefits to migrate to TF-A boot flow for our products as it involves some changes in flash layout and binary upgrades for the products which are already deployed.


1) What are the benefits/advantages in moving to TF-A boot flow? Will that become mandatory at some point to use this boot flow in order to use latest kernel?


2) Is that possible to still keep PPA boot flow for future LSDK releases and update RCW, MC, u-boot and Kernel?