November 14, 2024

Beyond BIOS: Developing with the Unified Extensible Firmware Interface, Third Edition

22 minutes

This excerpt from the book "Beyond BIOS: Developing with the Unified Extensible Firmware Interface" by Vincent Zimmer, Suresh Marisetty, and Michael Rothman, provides an in-depth look at the Unified Extensible Firmware Interface (UEFI) and the Platform Initialization (PI) specifications. The authors, Intel engineers who helped develop UEFI, explore the evolution of the BIOS, the UEFI architecture, and the different boot phases. They detail the driver model, architectural protocols, security measures, and the boot device selection process. The book also examines the challenges of embedded systems and explains how to optimize boot times and integrate manageability features, providing practical insights into the design and implementation of UEFI-compliant firmware.

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