Run a USB application while booting the system, before GRUB starts executing
I have small display board connected to my PC on its USB port. I have developed an application which displays a string over it. I want to run this application automatically when my system boots up. Also it should execute before GRUB.
I tried to search if there is any system file, where in I can make an entry of this executable(of my application), so that it will run when the system boots up, and that too before GRUB.
I have created a Makefile for my application.
I am not getting any clue, to how to go for it.
Please help me in this respect.