[edk2-devel] TPM2 EventLog EFI vs. ACPI

[Andrew Fish via groups.io]

> On Sep 17, 2022, at 11:31 AM, Jason Andryuk <jandryuk at gmail.com> wrote:
> 
> On Fri, Sep 16, 2022 at 10:28 PM Andrew Fish via groups.io
> <afish=apple.com at groups.io> wrote:
>> 
>> Is it possible to query the address from fw_cfg?
> 
> Hi, Andrew,
> 
> I believe QEMU puts "commands" into fw_cfg, and OVMF processes them to
> allocate the memory and write the address into the correct ACPI table
> location.  However, it seems to be done generically without awareness
> that the Event Log is being allocated in this case.
> 

I understand, but I think there are other cases when you can query for more specific information. For example you can get info on how to write an EFI PCI Root Bridge drive, and the ACPI methods also implement a similar abstraction. 

So it’s worth looking to see if that info is availible.

> Regards,
> Jason


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