On Wed, May 11, 2011 at 01:12:16PM +1000, Graeme Russ wrote: > >> > for two or three graphics chipsets. SeaBIOS can initialize any VGA > >> > option ROM, but then you need SeaBIOS in the loop. > >> > Option ROMs are ageold technology and stupid, but they are still > >> > firmly entrenched in PC hardware. A BIOS was always there so everyone > >> > assumes it will always stay there, not very many question if > >> > something better could be done. > >> > >> Would be interesting to investigate implementing a stub in U-Boot to > >> initialise and use VGA option ROMs > > > > VGA option ROMs call BIOS functions. So, one needs a BIOS > > implementation (eg, SeaBIOS) or an emulator for them (eg, in > > coreboot). > > What does Linux do? i.e. if you boot Linux from coreboot, how does it > output to the VGA console? I know it uses BIOS early on (before switching > to protected mode) but what does it do after entering protected mode?
In general, one enables the coreboot VGA option ROM emulation when booting Linux directly from coreboot. -Kevin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
