I've been doing a lot of iMX work lately, so here's some reference material I've used in the past: https://boundarydevices.com/high-assurance-boot-hab-dummies/

I've been doing a lot of iMX work lately, so here's some reference material I've used in the past: https://boundarydevices.com/high-assurance-boot-hab-dummies/ https://boundarydevices.com/high-assurance-boot-hab-dummies/ https://www.nxp.com/docs/en/application-note/AN4581.pdf https://www.nxp.com/docs/en/application-note/AN4581.pdf https://blog.quarkslab.com/vulnerabilities-in-high-assurance-boot-of-nxp-imx-microprocessors.html https://blog.quarkslab.com/vulnerabilities-in-high-assurance... A lot of it depends on Das U-Boot, the favorite open-source bootloader of the eLinux crowd: https://www.denx.de/wiki/U-Boot https://www.denx.de/wiki/U-Boot