Bootloaders Explained: U-Boot Internals and Customization
Key takeaway: Das U-Boot is a modular, two-stage (sometimes three-stage) bootloader that starts where the SoC’s on-chip ROM ends and hands off to an operating system. Because every board differs, real-world projects almost always rebuild, prune or extend U-Boot. Mastering its SPL/TPL architecture, driver model, devicetree, environment system and build flow lets you shrink boot […]