January 2017
Intermediate to advanced
322 pages
8h 17m
English
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Chapter 13 – Pre-EFI Initialization (PEI)
Small is Beautiful
—E.F. Schumacher
The UEFI Platform Initialization (PI) pre-EFI initialization (PEI) phase of execution has two primary roles in a platform’s life: determine the source of the restart and provide a minimum amount of permanent memory for the ensuing DXE phase. Words such as small and minimal are often used to describe PEI code because of hardware resource constraints that limit the programming environment. Specifically, the Pre-EFI Initialization (PEI) phase provides a standardized method of loading and invoking specific initial configuration routines for the processor, chipset, and system board. The PEI phase occurs after the Security (SEC) phase. The primary purpose of code operating ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.