How to change the display priority for startup in a multi-screen display?

[IIITK]

The first three DP ports are my three screen simulator device, and the HDMI port is linked to my daily desktop monitor
Whenever the computer is started, it will first start the DP port and then jump back to the HDMI port. This will cause the boot up animation to only appear on the DP display and not automatically jump back to the HDMI (desktop display) until entering the win system. I wonder if there is a way to make it start the HDMI port first? To avoid unnecessary startup of another DP display

 

[Novopaine]

I believe this is baked into the Firmware/BIOS of the GPU, and therefore it would not be possible to change.