Re: Generic VESA framebuffer driver and Video card BOOT?

[Pavel Machek]

Hi!

> > What about non-x86 platforms such as PowerPC and MIPS embedded devices
> > that want video (TiVo type platforms, media players etc). How would these
> > fit into the picture? Would this require the boot loader (ie: U-Boot or
> > whatever) to have the ability to POST the card?
> 
> There is the assumption that whatever BIOS the device has can get up a
> very early console that can output critical error messages before the
> kernel and early user space is loaded. For example the "I can't find
> the kernel" or  "initramfs is missing" error message. This also
> assumes that the BIOS can post whatever display it is using.
> 
> I'm not trying to fix the problem of getting early boot messages out
> of a Mac with an x86 card plugged into it. The card will work after
> early user space initializes. The right way to fix that would be to
> switch to something like LinuxBIOS and build the x86 emulator into
> it.

That still does not solve resume from suspend-to-RAM. We need to post
VGA there. We probably could do it late in userspace... but it makes
debugging resume pretty hard.
								Pavel
-- 
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