From: "Andrew Fish" <afish@apple.com>
To: Jason Andryuk <jandryuk@gmail.com>
Cc: devel@edk2.groups.io
Subject: Re: [edk2-devel] TPM2 EventLog EFI vs. ACPI
Date: Sat, 17 Sep 2022 17:10:41 -0700 [thread overview]
Message-ID: <B2C60295-144C-46DC-9D25-B4BDFD4B438E@apple.com> (raw)
In-Reply-To: <CAKf6xpv23YY5jGZ1P1oxcJRKirYFoijV5OXUbGoCoHtz2eVFrQ@mail.gmail.com>
> On Sep 17, 2022, at 11:31 AM, Jason Andryuk <jandryuk@gmail.com> wrote:
>
> On Fri, Sep 16, 2022 at 10:28 PM Andrew Fish via groups.io
> <afish=apple.com@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
next prev parent reply other threads:[~2022-09-18 0:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-16 19:45 TPM2 EventLog EFI vs. ACPI Jason Andryuk
2022-09-17 2:28 ` [edk2-devel] " Andrew Fish
2022-09-17 18:30 ` Jason Andryuk
2022-09-18 0:10 ` Andrew Fish [this message]
2022-09-19 9:17 ` Igor Mammedov
2022-09-19 12:22 ` Stefan Berger
2022-09-19 16:55 ` Jason Andryuk
2022-09-19 17:39 ` Stefan Berger
2022-09-19 18:19 ` Jason Andryuk
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