OPPO Kernel Craftsman

May 31, 2022 · Fundamentals

Introduction to UEFI Boot Process and Its Implementation in Embedded Systems

The article explains UEFI’s seven‑phase boot process, its open‑source EDK2 implementation, and how its modular drivers, event‑driven multitasking, and extensible services differ from traditional embedded bootloaders such as u‑boot or LK, making UEFI better suited for complex devices like smartphones.