[coreboot] Video not seen with BayTrail-I platform Board which has DVI/HDMI interface

Jose Trujillo ce.autom at protonmail.com
Thu Nov 8 12:23:19 CET 2018


Check the GPIOs in your schematic.
maybe you need to enable something.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, November 8, 2018 2:02 PM, galla rao <galla.rao80 at gmail.com> wrote:

> Hi Jose,
>
> Thanks for a quick response
>
> Enabled framebuffer in Config as given in inserted picture and am using uefipayload but not seabios
>
> [image.png]
>
> To add more to this
>
> MinnowMax + VGA -> Display is seen
> BayleyBay + VGA -> Display is not seen
>
> Does the FSP-master\FSP-master\BayTrailFspBinPkg\Vbios\vga.dat needs any change?
>
> Do you think in the hardware the DDI0, DDI1 pins and clk/data can have an impact and needs to be measured
>
> Regards
> Ranga
>
> On Thu, Nov 8, 2018 at 10:16 AM Jose Trujillo <ce.autom at protonmail.com> wrote:
>
>> Hello Ranga:
>>
>> If you are using tianocore as payload you should choose vesa framebuffer option and text mode in seabios
>> JT
>>
>> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>> On Thursday, November 8, 2018 1:08 PM, galla rao <galla.rao80 at gmail.com> wrote:
>>
>>> Hi All,
>>>
>>> Am facing Gfx Enablement failure, i don't see any Video output on my screen
>>>
>>> Config file has below settings
>>>
>>> CONFIG_VGA_BIOS_ID="8086,0f31"
>>>  CONFIG_DRIVERS_PS2_KEYBOARD is not set
>>>  CONFIG_ONBOARD_VGA_IS_PRIMARY=y
>>> CONFIG_VGA_BIOS=y
>>> CONFIG_UDELAY_IO is not set
>>> CONFIG_DCACHE_RAM_BASE=0xfef00000
>>> CONFIG_DCACHE_RAM_SIZE=0x4000
>>>  CONFIG_ACPI_SSDTX_NUM=0
>>> CONFIG_VGA_BIOS_FILE="../intel/cpu/baytrail/vbios/Vga.dat"
>>>  CONFIG_PCI_64BIT_PREF_MEM is not set
>>>
>>> BIOS log specific to Video output onto terminal
>>>
>>> ------------------------ VLV SSA Platform Policy dump Begin ---------------
>>> Graphics Configuration:
>>>  GttSize : 2 MB
>>>  IgdDvmt50PreAlloc : 2
>>>  PrimaryDisplay : 0
>>>  ApertureSize : 2
>>>  Turbo Enable : 1
>>>
>>> IGD enabled.
>>>
>>> dGFXBase         =  0x7BE00000
>>>
>>> Do i need to configure any setting in \FSP-master\FSP-master\BayTrailFspBinPkg\Vbios\vga.bsf file from BCT?
>>>
>>> Please let me know what could be the reason and if anyone has seen such behavior earlier
>>>
>>> Best Regards
>>> Ranga
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