tree cde4c0cad14a2fc69042a863ffdc69d173a5eeb1
parent ed33d89252c7c558283f4fde7938c625ccfe0a6e
author Ilias Apalodimas <ilias.apalodimas@linaro.org> 1718366990 +0300
committer Heinrich Schuchardt <heinrich.schuchardt@canonical.com> 1718523957 +0200

tpm: measure DTB in PCR1 instead of PCR0

The PC client spec [0], doesn't describe measurements for DTBs. It does
describe what do to for ACPI tables though.

There is a description for ACPI in 3.3.4.1 PCR[0] – SRTM, POST BIOS,
and Embedded Drivers and they explicitly mention ACPI in there. There's
no mention of ACPI in 3.3.4.2 PCR[1] – Host Platform Configuration.

However, in Figure 6 --  PCR Mapping of UEFI Components ACPI is shown
in PCR1. The general description also mentions PCR0 is for code and PCR1
is for data such as ACPI and SMBIOS.

So let's switch over the DTB measurements to PCR1 which seems a better
fit.

[0] https://trustedcomputinggroup.org/resource/pc-client-specific-platform-firmware-profile-specification

Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Eddie James <eajames@linux.ibm.com>