Re: [Qemu-devel] [PATCH 1/5] Add TPM 1.2 device interface

[Stefan Berger <stefanb@linux.vnet.ibm.com>]

On 02/18/2011 10:33 AM, Andreas Niederl wrote:
> This implementation is based on the TPM 1.2 interface for virtualized TPM
> devices from the Xen-4.0.0 ioemu-qemu-xen fork.
>
> A backend driver infrastructure is provided to be able to use different
> device backends.
>
> Signed-off-by: Andreas Niederl<andreas.niederl@iaik.tugraz.at>
>
> --- /dev/null
> +++ b/hw/tpm_tis.c
> @@ -0,0 +1,705 @@
> +/*
> + * tpm_tis.c - QEMU emulator for a 1.2 TPM with TIS interface
> + *
> + * Copyright (C) 2006 IBM Corporation
> + * Copyright (C) 2011 IAIK, Graz University of Technology
> + *
> + * Author: Stefan Berger<stefanb@us.ibm.com>
> + *         David Safford<safford@us.ibm.com>
> + *
> + * Author: Andreas Niederl<andreas.niederl@iaik.tugraz.at>
> + * Modified to use a separate TPM device backend
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation, version 2 of the
> + * License.
> + *
> + *
> + * Implementation of the TIS interface according to specs at
> + * https://www.trustedcomputinggroup.org/
> + *

I have a tpm_tis.c with major changes in it getting rid of the polling, 
closer to specs that passes a test suite and a registerable backend as 
well that has several more interface functions, due to support for 
snapshotting etc. Unfortunately it doesn't make much sense for me to 
post it since the backend is based on a library that's currently in the 
Fedora review process and nobody else could build or test it  -- unless 
there really was interest in reviewing at least some part of it.

It would certainly be desirable if your backend and mine could be 
accommodate.

     Stefan