Re: [coreboot] Haswell port

[Nico Huber]

Hi Konstantin,

On 29.07.2017 06:57, Konstantin Novikov wrote:
> Hello again, coreboot community!
>
> Thanks a lot Zoran Stojsavljevic and Nico Huber for their help and answers.
> You're lead us in "GFX-way", so it was a right direction.
> At first, we're added our PCI id in two structures (map_oprom_vendev and
> pci_device_ids) in northbridge/intel/haswell/gma.c. But after this we're
> see only black screen on display, no any BIOS/Linux output.
> gma_setup_panel(dev)
> this function was critical for us.
>
> gtt_write(DDI_BUF_CTL_A, DDI_BUF_IS_IDLE | DDI_A_4_LANES |
> DDI_INIT_DISPLAY_DETECTED);

good catch! I suppose you are using an analog VGA port then?

Are you going to submit a patch? We might want to add a devicetree
setting for this in `haswell/chip.h`. I could have a look at it too if
you want.

Nico
> Without DDI_A_4_LANES in this row we saw the Linux Ubuntu output (without
> any errors) and logging screen. After trying to use some VGA BIOS we're see
> BIOS output and bootsplash too. Linux Ubuntu works correct, fully
> reinstalled and loaded.
>
> Again, thanks Nico and Zoran (от всей души) for help. Coreboot community
> are awesome.
>
> Konstantin Novikov.

Haswell port

[Konstantin Novikov]

Hello, Nico.
Yes, now I'm using VGA port. Yes, we'll commit our changes, but after we'll
end port. S3 isn't working now, and we have some troubles with Super I/O,
but we already did this work with b75-port.

2017-07-29 22:06 GMT+03:00 Nico Huber :
> Hi Konstantin,
>
> On 29.07.2017 06:57, Konstantin Novikov wrote:
> > Hello again, coreboot community!
> >
> > Thanks a lot Zoran Stojsavljevic and Nico Huber for their help and
>
> answers.
> > You're lead us in "GFX-way", so it was a right direction.
> > At first, we're added our PCI id in two structures (map_oprom_vendev and
> > pci_device_ids) in northbridge/intel/haswell/gma.c. But after this we're
> > see only black screen on display, no any BIOS/Linux output.
> > gma_setup_panel(dev)
> > this function was critical for us.
> >
> > gtt_write(DDI_BUF_CTL_A, DDI_BUF_IS_IDLE | DDI_A_4_LANES |
> > DDI_INIT_DISPLAY_DETECTED);
>
> good catch! I suppose you are using an analog VGA port then?
>
> Are you going to submit a patch? We might want to add a devicetree
> setting for this in `haswell/chip.h`. I could have a look at it too if
> you want.
>
> Nico
> > Without DDI_A_4_LANES in this row we saw the Linux Ubuntu output (without
> > any errors) and logging screen. After trying to use some VGA BIOS we're
>
> see
> > BIOS output and bootsplash too. Linux Ubuntu works correct, fully
> > reinstalled and loaded.
> >
> > Again, thanks Nico and Zoran (от всей души) for help. Coreboot community
> > are awesome.
> >
> > Konstantin Novikov.