[U-Boot] [PATCH v4] board support patch for phyCORE-MPC5200B-tiny

[Anatolij Gustschin]

Jon Smirl wrote:
> On Sun, Mar 29, 2009 at 10:08 AM, Markus Rathgeb
> <maggu2810 at googlemail.com> wrote:
>> Hi!
>>
>> Have you read the BIOSEMU stuff in the mailing list?
>> Can you adjust the PCI section and perhaps you can include the video
>> example (set undef video).
> 
> I have v1 of the pcm030 hardware and the baseboard doesn't have a PCI slot.
> 
> I looked at some of your older emails. It looks like the framebuffer
> is not accessible. You are hanging on a write to the PCI bus.
> 
> Forget about running the video BIOS initially, just use the memory
> commands from u-boot to make sure you can read and write the
> framebuffer.

No, memory access to frame buffer will only work after the SD-RAM
controller of the GPU is properly initialized. Video BIOS is supposed
to do this among other things. As the boot log showed, video memory
size was not recognized by the radeon driver which indicates that
the video BIOS run failed to initialize the graphic chip and memory
controller. Fixing the XLB Initiator Window configuration for bus
PCI IO space starting at 0x00000000 seemed to solve problems with
video BIOS run.

Best regards,
Anatolij