Attempt to create a minimal EDK2 for Pixel 3 XL.
Status
Can partially boot the Fedora 29 aarch64 kernel: there's no initrd, so the kernel panics when mounting root FS.
Since there's no internal storage support yet, use the addlinux branch to embed a Linux kernel in the UEFI firmware.
Building
Tested on Ubuntu 18.04.
First, clone EDK2.
cd ..
git clone https://github.com/tianocore/edk2.git --recursive
git clone https://github.com/tianocore/edk2-platforms.git
You should have all three directories side by side.
Next, install dependencies:
18.04:
sudo apt install build-essential uuid-dev iasl git nasm python3-distutils gcc-aarch64-linux-gnu
Also see EDK2 website
Finally, ./build.sh.
Then fastboot boot uefi.img.
Credits
SimpleFbDxe screen driver is from imbushuo's Lumia950XLPkg.