[coreboot-gerrit] [M] Change in coreboot[master]: security/intel/txt: Create Intel TXT lib with helper functions

[Subrata Banik (Code Review)]

Attention is currently required from: Jérémy Compostella, Angel Pons, Lean Sheng Tan, Werner Zeh.

Hello build bot (Jenkins), Tarun Tuli, Jérémy Compostella, Sridhar Siricilla, Angel Pons, Arthur Heymans, Lean Sheng Tan, Werner Zeh,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/71573

to look at the new patch set (#6).

Change subject: security/intel/txt: Create Intel TXT lib with helper functions
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security/intel/txt: Create Intel TXT lib with helper functions

This patch decouples useful TXT related operations from the romstage.c
file alone and moves them into a helper txtlib.c. This effort will be
helpful for SoC users to perform TXT related operations
(like Disabling TXT) even without selecting INTEL_TXT config.

At present, those helper functions are only available upon selecting
INTEL_TXT which is not getting enabled for most of the SoC platform in
the scope of the Chromebooks.

TEST=Able to access functions from txtlib.c even without selecting
INTEL_TXT config.

Signed-off-by: Subrata Banik 
Change-Id: Iff5b4e705e18cbaf181b4c71bfed368c3ed047ed
---
M src/security/intel/txt/Kconfig
M src/security/intel/txt/Makefile.inc
M src/security/intel/txt/romstage.c
A src/security/intel/txt/txtlib.c
A src/security/intel/txt/txtlib.h
5 files changed, 92 insertions(+), 38 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/73/71573/6