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AM620-Q1: Build custom SBL

Part Number: AM620-Q1

Tool/software:

Hello,

       I was successfully able to load linux OS and MCU RTOS os using SBL1 and SBL2 with appimage from eMMC. I have some questions related to the SBL1 and SBL2 generation.

Q1. Thinking from a production perspective, as a customer, is it our responsibility to build and maintain SBL2?

Q2. Should we use the SBL1 prebuilt by TI or it has to be built by customer?

Q3. How is the MCU appimage authenticated if it is loaded by SBL1?