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May 2019

UEFI 2.8, Courtesy of Nikolaj

UEFI 2.8, Courtesy of Nikolaj
UEFI 2.8, Courtesy of Nikolaj

The UEFI Forum released the latest version of the UEFI spec, v2.8, last month. (April 2019).  If you haven't downloaded it yet, you ca...

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7:00 AM
William Leara
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specifications
7:00 AM

UEFI.org - Members Pages

UEFI.org - Members Pages
UEFI.org - Members Pages

For BIOS engineers, arguably the two most significant on-line resources are uefi.org and tianocore.org .  In this post, I will summarize ...

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6:00 PM
William Leara
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misc
6:00 PM
 
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Welcome to the Basic Input/Output website! Here I share things pertaining to the arcane art of PC BIOS development. For spice, I add material about software development in general and some interesting computer history vignettes. Please, try to contain your excitement!
—William Leara
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  • Introduction to the Simple Boot Flag
    The Simple Boot Flag , it turns out, is a bit of a mystery.  Trying to find information about this flag, and/or its associated specification...
  • Introduction to Slim Bootloader
    Slim Bootloader (SBL) is an open-source boot firmware built from the ground up for Intel x86 systems. Designed to be small, fast, and secure...
  • Guide to the SWEBOK v4.0 Has Been Released
    The Guide to the Software Engineering Body of Knowledge (SWEBOK) v4.0 was released on October 15, 2024. The Guide is a publication of the ...
  • UEFI Forum Updates All Specs, Dec 2024
    The UEFI Forum updated all three of its specifications in December, 2024:  ACPI, UEFI, and PI. As a refresher: Advanced Configuration and P...
  • UEFITool
    Here’s a handy tool for interrogating firmware volumes:  UEFITool !  It is written by Nikolaj Schlej , and is great for examing the Regions/...
  • “Hello World” Quick-Start with edk2-stable201908
    Periodically, I've written articles describing how to setup the EDK on a system and configure it to build a basic "Hello, World...

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      • UEFI 2.8, Courtesy of Nikolaj
      • UEFI.org - Members Pages
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latest UEFI specs

  • UEFI Spec 2.11
  • UEFI PI Spec 1.9
  • ACPI 6.5a

UEFI resources

  • presentations, podcasts, videos
  • white papers

UEFI blog roll

  • BIOS on StackOverflow
    How to get memory regions and store into a list on 0x00EFFFFF to 0x1CFFFFF (14MB) in kernel?
  • Vincent Zimmer's blog
    Wind Energy and the Long Arc: Cornell Engineer, December 1990

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