[OpenWrt Wiki] pepe2k-u-boot_mod
openwrt.org › docs › techrefJul 16, 2021 · In short, this project is a deep modification of U-Boot 1.1.4 sources, mostly from TP-Link, but some code fragments were taken also from D-Link, Netgear, ZyXEL and Belkin. All these companies are using SDK from Qualcomm/Atheros which includes modified version of U-Boot 1.1.4.
[OpenWrt Wiki] Das U-Boot Environment
openwrt.org › docs › techrefIt is called the u-boot environment. It stores some values like the IP address of the TFTP server (on your PC) to which the the TFTP client (part of U-Boot) will try to connect, etc. You can read and write these values when you are connected to the U-Boot console via Serial Port and also from the CLI once you booted OpenWrt.