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Query on S32K144 CSEc module and secure boot

Question asked by Mohan kumar on Aug 31, 2017
Latest reply on Sep 20, 2017 by Daniel Martynek



I have few queries on CSEc module and secure boot. Can you please help me to understand below queries.


Query 1:


From below diagram I see PRAM(memory to store secure keys) is of 128 Bytes.

   Is this memory extendible and configurable ?

   What is the maximum number of keys we can store in this area ?

   What is single secure key size in bytes?



Query 2:

To enable secure boot for certain memory region, I know we use BOOT_MAC_KEY_VALUE.

What key should we use if multiple memory regions need to be secured, whether it is same BOOT_MAC_KEY_VALUE ?


Query 3:

Once we enable secure boot(FTFC->FCSESTAT->BOK is 1), how to prove the secure boot concept ?, please guide me the steps.