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

[galla rao]

Hi Jose,

Thanks for a quick response

Enabled framebuffer in Config as given in inserted picture and am using
uefipayload but not seabios

[image: 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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