relchk/tpl/ipxe_grub.conf.j2

#!/bin/sh
# Copy this file to /etc/grub.d/40_custom_ipxe with mode 0755 and run grub-mkconfig -o /boot/grub/grub.cfg
exec tail -n +3 $0
# iPXE
# Project: https://ipxe.org/
# Details: https://ipxe.org/docs
menuentry 'iPXE' {

	insmod linux16
	insmod loopback
	search --no-floppy --fs-uuid {{ disk_uuid }} --set=root
{%- if variant == 'iso' %}
	set isofile='{{ iso_path }}'
	loopback loop (${root})/${isofile}

	linux16 (loop)/ipxe.lkrn
{%- else %}
	insmod fat
	insmod chain
	terminal_output console

    chainloader (${root})/{{ iso_path }}
{%- endif %}

}