[Xen-devel] [PATCH] [Firmware] TCG BIOS extensions for the Bochs BIOS

[Stefan Berger <stefanb@xxxxxxxxxx>]

This patch adds an implementation of the TCG BIOS extensions to the
Bochs BIOS and enables logging of boot measurements using the previously
implemented support for TCPA ACPI tables. A low-level driver for a TPM
TIS device and an Atmel device is provided.

The implemented specification is described here:

https://www.trustedcomputinggroup.org/specs/PCClient/TCG_PCClientImplementationforBIOS_1-20_1-00.pdf

I added a #define 'BX_TCGBIOS' to rombios.c that enables or disables
these extensions. It's currently disabled so none of the code is
compiled into the BIOS.

The implementation passes the tests implemented in a newer version of
trusted grub (available through the trousers project on sourceforge).

Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxx>

Attachment: bios_tcg.diff
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