tree 0f65c0419a855ac6fc7264ad346580c41a02fac4
parent f20151dfaa4ffbee9b58aa86d77320c45bd81707
author Patrick Rudolph <patrick.rudolph@9elements.com> 1600674571 +0200
committer Hung-Te Lin <hungte@chromium.org> 1608518300 +0000

drivers/tpm: Implement full PPI

Implement the ACPI PPI interface as described in
"TCG PC Client Physical Presence Interface Specification" Version 1.3.

Add a new Kconfig that allows to use the full PPI instead of the stub
version compiled in.

This doesn't add code to execute the PPI request, as that's up to the
payload with graphical UI support.

Tested on GNU/Linux 5.6 using the sysfs interface at:
/sys/class/tpm/tpm0/ppi/

Change-Id: Ifffe1d9b715e2c37568e1b009e86c298025c89ac
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45568
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>