A walkthrough of verified boot — how RSA signatures and SHA-256 hashes combine, why the public key has to be anchored outside the package, and the full chain of trust from Boot ROM to Linux kernel, with AM335x as the reference case study.

A walkthrough of the Qualcomm Linux boot flow — PBL, XBL, Qualcomm TEE, hypervisor, UEFI and the boot manager, plus the chain of trust anchored in eFuse and the EL0–EL3 privilege model.

A technical walkthrough of the embedded Linux boot flow — Boot ROM, SPL, U-Boot, kernel, and rootfs.