I never needed to make changes to vga.dat on my E3845 system.
The vga.dat was taken from the FSP package the same as you.
The coreboot version that I used was 4.7.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, November 8, 2018 2:02 PM, galla rao <galla.rao80@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@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@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