[OLPC-devel] Re: AMD Geode GX framebuffer: support OLPC

[Ronald G Minnich]

ollie wrote:

> I haven't looked at the very early init of Linux kernel for a long
> time. IIRC, we can just boot the vmlinux ELF image with LinuxBIOS/FILO
> The ELF image does not contain the arch/i386/boot stuff at all. Is
> there any reason we have to load something like bzImage?
> 

I think the issue is that VGA parameters have to be set. See below. How 
do we want to do this?

ron



>>>#ifdef CONFIG_VIDEO_SELECT
>>>        movw    %fs:(0x01fa), %ax               # User selected video mode
>>>        cmpw    $ASK_VGA, %ax                   # Bring up the menu
>>>        jz      vid2
>>>
>>>        call    mode_set                        # Set the mode
>>>        jc      vid1
>>>
>>>        leaw    badmdt, %si                     # Invalid mode ID
>>>        call    prtstr
>>>vid2:   call    mode_menu
>>>vid1:
>>>#ifdef CONFIG_VIDEO_RETAIN
>>>        call    restore_screen                  # Restore screen contents
>>>#endif /* CONFIG_VIDEO_RETAIN */
>>>        call    store_edid
>>>#endif /* CONFIG_VIDEO_SELECT */