Le mercredi 17 décembre 2008 à 01:10 +0100, Carl-Daniel Hailfinger a écrit : > On 16.12.2008 22:51, Laurent Vivier wrote: > > Le mardi 16 décembre 2008 à 22:46 +0200, Blue Swirl a écrit : > > > >> On 12/16/08, Anthony Liguori <anth...@codemonkey.ws> wrote: > >> > >>> Blue Swirl wrote: > >>> > > > > > >>>> The control channel may still be needed. > >>>> > >>>> Alternatively the BIOS could load the image and fade parameters from a > >>>> new ROM or from the configuration device and draw it to screen. This > >>>> would need some PNG support to BIOS, or that the image stored in raw > >>>> form. > >>>> > >>>> > >>>> > >>> Yeah, having QEMU render to the VGA directly is a bit ugly. It would be > >>> nicer if the BIOS actually rendered the image but I'm not sure I think we > >>> should reject the patch just because it doesn't. > >>> > >> Actually this way the image can be in full color even if the emulated > >> device was an EGA in text mode. > >> > > > > And you can provide the image name on the command line, and complexity > > is in Qemu, not in BIOS. > > > > If one of the goals of QEMU is to be somewhat similar to hardware, this > should be done in the BIOS.
A lot of things in Qemu are already not similar to hardware: virtio, firmware configuration device, instruction timing... > What happens if the BIOS provides a splash screen? Will it override the > QEMU splash screen? Yes. The BIOS asks Qemu to display the image... or not. > > But in fact, my first idea was to read the image data from the > > configuration device (which is always possible with LOGO_CMD_OFFSET), > > but when I saw how it has been done in VirtualBox, I though it was a > > good idea. > > > > Modern x86 BIOSes read the splash screen from the BIOS ROM and the > settings from NVRAM (sometimes the BIOS ROM is used for that as well by > reflashing a sector of the ROM on every boot). A BIOS, by definition, is not modern... ;-) (Openfirmware is...) Laurent -- ------------------ laurent.viv...@bull.net ------------------ "Tout ce qui est impossible reste à accomplir" Jules Verne "Things are only impossible until they're not" Jean-Luc Picard -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
