[coreboot-gerrit] Change in coreboot[master]: lib: Add a library to hash and verify RAM contents

[Raul Rangel (Code Review)]

Hello build bot (Jenkins), Patrick Georgi, Martin Roth, Julius Werner,

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

https://review.coreboot.org/c/coreboot/+/42890

to look at the new patch set (#4).

Change subject: lib: Add a library to hash and verify RAM contents
......................................................................

lib: Add a library to hash and verify RAM contents

When debugging S3 stability issues, it's helpful to hash the OS RAM on
S3 entry and verify the OS RAM on S3 resume. This will help catch any
unexpected writes to OS RAM.

BUG=b:159081993
TEST=Boot trembyle and see no verification failures.

Signed-off-by: Raul E Rangel 
Change-Id: I6b38facba17bdd57a94987cfb49e71067ff8b769
---
M src/Kconfig
A src/include/ram_hash.h
M src/lib/Kconfig
M src/lib/Makefile.inc
A src/lib/ram_hash.c
5 files changed, 240 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/90/42890/4