if i look at the diagram it looks like linux replaces a bootloader? or is that a bit too simple of a conclusion? wouldn't a minimalistic bootloader loading lin

if i look at the diagram it looks like linux replaces a bootloader? or is that a bit too simple of a conclusion? wouldn't a minimalistic bootloader loading linux then not do about the same? (if you implement coreboot) since that leaves linux to configure everything something like GRUB would usually initialise? I think linux actually re-initialises most things that are done by the loader, and seeing that linux kernel is in the 'memory init' zone, i'd say it's not 'in firmware' and so wouldn't change much?? in my eyes, bios confiugres some stuff like smm etc., then hands over to bootloader (grub or so) which further initialises system ,and hands over to OS. (linux?) So this just seems to skip the bootloader? of which most initialisation is ignored / reinitialised by linux anyway?