[coreboot] REG : GOP Driver

[Matt DeVillier]

On Thu, Aug 30, 2018 at 11:41 AM nagaraj a <nagarajnn at gmail.com> wrote:

> Hi DeVillier,
>
> Thanks a lot for the kind response.
>
> <<
> Windows is fine as long as valid VBT data has been loaded into the Intel
> ACPI OpRegion, and the OpRegion is valid/has been fully populated.
> >>
>
> For the above note this holds good for already installed OS.
>
> In case if we are trying to install windows OS for the first time and GOP
> driver is not loaded for the Intel iGPU in that case I understand there
> will be blank out.
>

I'd have to test to be sure, but that sounds correct.  I know the Windows
installer uses a basic driver of some sort, and likely assumes a working
framebuffer exists


>
> Correct me if I'm wrong.
>
> //BR
> Nagaraj A
>
>
> On Thu, 30 Aug 2018, 8:57 pm Matt DeVillier, <matt.devillier at gmail.com>
> wrote:
>
>> with Intel iGPUs and using Tianocore UEFI payload, Linux is fine
>> regardless if the display is initialized or not by GOP driver.  Windows is
>> fine as long as valid VBT data has been loaded into the Intel ACPI
>> OpRegion, and the OpRegion is valid/has been fully populated.
>>
>> On Thu, Aug 30, 2018 at 7:57 AM nagaraj a <nagarajnn at gmail.com> wrote:
>>
>>> All,
>>>
>>> I have query regarding GOP driver in UEFI.  Here is query details.
>>>
>>> If BIOS don't load UEFI GOP driver for  GPU and system boots into OS.
>>> Will latest windows /linux OS will be up with display or the display
>>> will be blank out.
>>>
>>> //BR
>>> Nagaraj A
>>>
>>> --
>>> coreboot mailing list: coreboot at coreboot.org
>>> https://mail.coreboot.org/mailman/listinfo/coreboot
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.coreboot.org/pipermail/coreboot/attachments/20180830/aabe3512/attachment.html>