pebaz / uefi-tuts

Tutorials on how the UEFI works to boot your own Operating System. Think of this as an EFI Bootloader.

Step by Step Tutorials on how to use the UEFI for OS Development from scratch

THIS IS WINDOWS BASED TUTS, BUT CODE SHOULD WORK IN LINUX AND MAC.

DISCORD : https://discord.gg/6gxEF3QCtB
YOUTUBE : https://www.youtube.com/channel/UCouyC9D6WFBwc24sqdkS-jw

NOTE : You WILL need to change the makefile to work with Linux / MAC gcc compilers. I do not have Linux or Mac, so I have no way to test it. The line in the makefile "-Wl,-dll -Wl,--subsystem,10" is a WINDOWS gcc compiler line. You do not need it for Linux / Mac GCC versions.

NOTE 2 : Thanks to FueledByOCHD for his contribution of making this readme file much better to read.

Original 2.9 Specs PDF

MinGWx64 ( GCC ) ( For windows, no cross-compiler needed )

NOTE : This works in Windows. Cross-compiler is not needed. But in Linux GCC should still work.

OSFMount

NOTE : The create image is there for your convenience. I include the EXE and source code to create your own drive.hdd file from scratch. It even has the code setup with a 40 Meg GPT/EFI partition. This way you can see how it works.

I supplied the qemu bat file to launch qemu and load the drive.hdd file.

• Tutorials
  • TUTORIAL 1 - TEXT
  • TUTORIAL 2 - COLOR
  • TUTORIAL 3 - KEYBOARD
  • TUTORIAL 4 - ERROR CHECKING
  • TUTORIAL 5 - EFI LIBS FILE
  • TUTORIAL 6 - CURSOR POSITIONS
  • TUTORIAL 7 - GRAPHICS OUTPUT PROTOCOL
  • TUTORIAL 8 - EFI STALL ( A.K.A. Delay )
  • TUTORIAL 9 - COLD REBOOT / SHUTDOWN
  • TUTORIAL 10 - UNICODE KeyStroke ( UnicodeChar )
  • TUTORIAL 11 - LOAD / OPEN / CLOSE VOLUME + FILE SYSTEM + FILES
  • TUTORIAL 12 - LOADED FILE TO BUFFER + READING IT

More Tuts Coming soon...