There’s a new github project for BIOS/UEFI-centric PXE use, called PXE-config:
PXE config files for Legacy BIOS and UEFI netboot installs; also contains kickstart files for automated CentOS, Fedora, etc. installs. This repo contains various config files including PXE boot menu config files & kickstart files for unattended installs over PXE boot. It does not contain /etc/dnsmasq.conf, however, which contains PXE server settings for dhcp, tftp boot, and detecting client architectures (Legacy BIOS vs UEFI). dnsmasq.conf can be found in my jun-dotfiles repo on github.
Firmware Security 