Secure Boot Path: From BootROM to Userspace in ZynqMP and i.MX8
Published at July 18, 2025 · 5 min read
🔐 Introduction Secure Boot ensures that only authenticated and untampered code runs on a system. This post walks through the secure boot process from BootROM all the way to Linux userspace, focusing on Xilinx ZynqMP and NXP i.MX8. We explain how keys are stored and verified, how FIT images are authenticated, and what protections are required even after Linux boots. 📊 Secure Boot Flow Overview The diagram below illustrates the secure boot process commonly used in embedded SoCs like Xilinx ZynqMP and NXP i....