[coreboot] AMD Family 15tn/16: What is `…HookGfxGetVbiosImage` needed for?
Martin Roth
gaumless at gmail.com
Thu Nov 7 02:28:42 CET 2013
AGESA will disable the onboard graphics device if a pointer to the
videobios isn't passed in.
Martin
On 11/06/2013 03:48 PM, Paul Menzel wrote:
> Dear coreboot folks,
>
>
> why does AGESA need the Video BIOS hook for Family 15tn (Trinity) and
> Family 16 (Kabini)?
>
> $ more src/northbridge/amd/agesa/family15tn/fam15tn_callouts.c
> […]
> AGESA_STATUS fam15tn_HookGfxGetVbiosImage(UINT32 Func, UINT32 FchData, VOID *ConfigPrt)
> {
> GFX_VBIOS_IMAGE_INFO *pVbiosImageInfo = (GFX_VBIOS_IMAGE_INFO *)ConfigPrt;
> pVbiosImageInfo->ImagePtr = cbfs_get_file_content(
> CBFS_DEFAULT_MEDIA, "pci"CONFIG_VGA_BIOS_ID".rom",
> CBFS_TYPE_OPTIONROM);
> /* printk(BIOS_DEBUG, "IMGptr=%x\n", pVbiosImageInfo->ImagePtr); */
> return pVbiosImageInfo->ImagePtr == NULL ? AGESA_WARNING : AGESA_SUCCESS;
> }
>
> Looking through
>
> src/vendorcode/amd/agesa/f15tn/Legacy/Proc/agesaCallouts.c
>
> I do not see what this is needed for.
>
>
> Thanks,
>
> Paul
>
>
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