CorebootPayloadPkg doesn't have the hooks requires for CSM, you'd need to
use OMVH as a model to integrate the CSM. I've played around with it but
never got it working. Maybe it would be better to try and integrate with
UefiPayloadPkg?

On Mon, Aug 19, 2019, 4:14 PM Rafael Send <[email protected]>
wrote:

> Right, but I'm not building for OVMF, I'm making a Coreboot payload.
>
> Does that option still exist there?
>
> Rafael
>
> On Mon, Aug 19, 2019 at 12:39 AM Gerd Hoffmann <[email protected]> wrote:
>
>> On Fri, Aug 16, 2019 at 04:31:16PM -0700, Rafael Send wrote:
>> > Hi all-
>> > I've found only vague references to doing this (
>> >
>> https://www.seabios.org/Build_overview#Build_as_a_UEFI_Compatibility_Support_Module_.28CSM.29
>> ),
>> > and no real guides / examples.
>> >
>> > Before I go on a wild goose chase, has anyone tried this before?
>>
>> Basically compile with CONFIG_CSM=y, then copy the binary into the EDK2
>> tree and build ovmf with -D CSM_ENABLE.
>>
>> https://git.kraxel.org/cgit/jenkins/seabios/tree/seabios.git.spec
>> https://git.kraxel.org/cgit/jenkins/edk2/tree/edk2.git.spec.template
>>
>> HTH,
>>   Gerd
>>
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