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

  • To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Stefan Berger <stefanb@xxxxxxxxxx>
  • Date: Thu, 07 Dec 2006 17:04:23 -0500
  • Delivery-date: Thu, 07 Dec 2006 14:04:35 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

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:


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
Description: Text Data

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