>>542454
If its a Mediatek or an Allwinner then its bios is open and well documented, however, at least with Allwinner, you will need an SD card slot to boot a generic ARM based OS like Fedora, since Fedora has an official ARM spin. Since U-boot searches for an SD slot first, if it has no SD slot but is an Allwinner then there's probably an SD slot header on the motherboard. Not sure how to boot Mediateks since my main experience is with Allwinners, its how I turned my restricted set top box into a Fedora PC