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Re: [Qemu-devel] [SeaBIOS] [PATCH V5 0/9] Add TPM support to SeaBIOS
From: |
Kevin O'Connor |
Subject: |
Re: [Qemu-devel] [SeaBIOS] [PATCH V5 0/9] Add TPM support to SeaBIOS |
Date: |
Thu, 7 Jul 2011 08:43:19 -0400 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, Jul 07, 2011 at 07:48:29AM -0400, Stefan Berger wrote:
> On 07/06/2011 06:58 PM, Kevin O'Connor wrote:
> >BTW, I don't think patch 7 or 9 really make sense to integrate in the
> >official version of SeaBIOS. Also, in patch 8, I'd prefer to see all
> >new fw_cfg entries use the "romfile" mechanism.
> Patch 7 is the menu. This patch is needed in 'some form' since in
> some cases, like after giving up ownership of the TPM, the TPM
> becomes disabled and deactivated and one has to interact with the
> BIOS to activate and enable it again. Other scenarios include
> someone who has forgotten the owner password for the TPM and now has
> to go through the BIOS to give up ownership of it -- that's the only
> way one can do this then.
Hrmm. I don't recall seeing this menu on the factory BIOS of real
machines. How do normal users interact with it?
Can the info be passed in from QEmu?
> I'll have a look at the 'romfile' mechanism for patch 8.
>
> I only post patch 9 for someone who is interested to be able to run
> the tests. Since the 128kb are slowly filling up, it's not going to
> be compilable with it for much longer and I don't expect it to go
> into the repo.
There is no limit at 128K - if it's exceeded the build will start
using a 256K rom.
More important than the total size is the "fixed" size reported at the
end of the build - that's how much space is used under 1 Meg after the
"post" phase completes. Ideally it would stay under 64K though that's
not a hard limit either.
-Kevin
- [Qemu-devel] [PATCH V5 7/9] Add a menu for TPM control, (continued)
- [Qemu-devel] [PATCH V5 7/9] Add a menu for TPM control, Stefan Berger, 2011/07/06
- [Qemu-devel] [PATCH V5 2/9] Provide ACPI SSDT table for TPM device + S3 resume support, Stefan Berger, 2011/07/06
- [Qemu-devel] [PATCH V5 5/9] Support for BIOS interrupt handler, Stefan Berger, 2011/07/06
- [Qemu-devel] [PATCH V5 3/9] Add public get_rsdp function, Stefan Berger, 2011/07/06
- [Qemu-devel] [PATCH V5 1/9] Add an implementation of a TPM TIS driver, Stefan Berger, 2011/07/06
- [Qemu-devel] [PATCH V5 8/9] Support for Qemu-provided measurements, Stefan Berger, 2011/07/06
- [Qemu-devel] [PATCH V5 6/9] Add measurement code to the BIOS, Stefan Berger, 2011/07/06
- [Qemu-devel] [PATCH V5 4/9] Implementation of the TCG BIOS extensions, Stefan Berger, 2011/07/06
- Re: [Qemu-devel] [SeaBIOS] [PATCH V5 0/9] Add TPM support to SeaBIOS, Kevin O'Connor, 2011/07/06