uefi

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What is This?

This project contains some experiments in software that runs on UEFI firmware for the purpose of exploring UEFI development and bootloader development. It might someday become a bootloader or something fancier but right now it's just a sandbox and a place for the author to keep all the bits necessary to build and debug such software handy, and track pointers to useful documentation.

External Software Included

Local Path: gnu-efi/... Description: headers and tooling to build UEFI binaries with gcc, etc Project: https://sourceforge.net/projects/gnu-efi/ Source: git://git.code.sf.net/p/gnu-efi/code Version: 6605c16fc8b1fd3b2085364902d1fa73aa7fad76 (post-3.0.4) License: BSD-ish, see gnu-efi/README.*

Local Path: ovmf/... Description: UEFI Firmware Suitable for use in Qemu Distribution: http://www.tianocore.org/ovmf/ Version: OVMF-X64-r15214.zip License: BSD-ish, see ovmf/LICENSE

External Dependencies

qemu-system-x86_64 is needed to test in emulation gnu parted and mtools are needed to generate the disk.img for Qemu

Useful Resources & Documentation

ACPI & UEFI Specifications http://www.uefi.org/specifications

Intel 64 and IA-32 Architecture Manuals http://www.intel.com/content/www/us/en/processors/architectures-software-developer-manuals.html

Tianocore UEFI Open Source Community (Source for OVMF, EDK II Dev Environment, etc) http://www.tianocore.org/ https://github.com/tianocore

Thanks

Matthew Garrett's "Getting Started With UEFI Development" was very useful as a guide to the use of the gcc toolchain for building with gnu-efi. https://mjg59.dreamwidth.org/18773.html

The osdev.org wiki had some useful recipes for generating disk images suitable for testing with Qemu and tricks and tips for debugging UEFI apps. http://wiki.osdev.org/UEFI http://wiki.osdev.org/Debugging_UEFI_applications_with_GDB