Will linux kernel write graphic codes for vga?

[Collins_Chen]

Dear all,
     I have an interested question: will linux kernel write graphic codes for
vga?
     For pci vga card, normal bios just jump to 0xc003 to call vga bios. Why
linux kernel don't do the same job like normal bios. For embeded vga in chipset,
the vga bios is merged in normal bios.
       In linuxbios the vga is hard to lighting up, I want to know if linuxbios
kernel or linux kernel will write graphic code for vga.
       Thanks!
Regards,
Collins