There are 7 repositories under u-boot topic.
Armbian Linux build framework generates custom Debian or Ubuntu image for x86, aarch64, riscv64 & armhf
U-Boot 1.1.4 modification for routers
OpenWrt firmware installer
A U-Boot hacking toolkit for security researchers and tinkerers
Spotify Car Thing (superbird) resources to access U-Boot shell over USB
Generate filelist and slickedit for the compiled source file and depend header file for Linux Kernel and U-boot
Scripts to build bootable SD card images with Debian for various single-board computers
AXIOM firmware (linux image, gateware and software tools)
FPGA+SoC+Linux+Device Tree Overlay+FPGA Manager U-Boot&Linux Kernel&Debian11 Images (for Xilinx:Zynq-Zybo:PYNQ-Z1 Altera:de0-nano-soc:de10-nano)
FPGA+SoC+Linux+Device Tree Overlay+FPGA Manager U-Boot&Linux Kernel&Debian11 Images (for Xilinx:Zynq Ultrascale+ MPSoC)
Technical data (reverse engineered) and an alternative firmware (Debian GNU/Linux) for the Seagate Blackarmor NAS
BananaPi M2 Zero - Ubuntu Focal Base Minimal Image (Experimental) - U-Boot 2017.09 / Kernel 4.18.y / Kernel 4.19.y / Kernel 4.20.y / Kernel 5.3.y / Kernel 5.6.y / Kernel 5.7.y / Kernel 5.11.y
Firmware Image Package (FIP) sources to sign Amlogic u-boot binaries in LibreELEC, Armbian and meta-meson
Pine64 U-Boot with patches to compile and boot fixed BSP Kernel in a sensible way
Debian + Mainline Linux Kernel + u-boot. Bootstrap Script and Tutorial for RPi2/3.
A detailed guide for building and booting a 64-bit kernel on raspberry pi 3 b+ using u-boot.
U-Boot builds for Orange Pi 5 (and variants)
Open Mesh OM5P-AC v2 Unlocker (U-Boot 1.1.4 based)
A complete project that can run Linux-3.12.74 on a microcontroller, and the hardware development environment is easily accessible.
EasyArm i.MX280a, u-boot-2020.07, linux-5.5.5
Amlogic boot scripts for Armbian
xburst 1 u-boot for ingenic devices
debian arm64 linux for the nanopi r4s