tree f2cd42b1d7c0ccd1b5bdf0349610d34a20edee4d
parent 7dd3bd0fcf565901aacc512cd29cefe19291c2e7
author Randall Spangler <rspangler@chromium.org> 1430867210 -0700
committer ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> 1430956836 +0000

Make SHA library accessible to calling firmware

And add a vb2_digest_buffer() call which produces the hash of a buffer
all in a single function call.  That function actually already
existed, but was in a unit test file rather than in the library
itself.  It's a small function, so adding it won't increase the size
of the library significantly - or at all, on platforms which compile
with -ffunction-sections.

This allows coreboot to reuse this SHA library for hashing CBFS
entries and file data.  All it has to do is #define
NEED_VB2_SHA_LIBRARY and then #include "vb2_api.h".

BUG=chromium:482652
BRANCH=none
TEST=make -j runtests

Change-Id: Ice2d0929324b58b2665f3989b5b887225f6ef61e
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/269523
Reviewed-by: Julius Werner <jwerner@chromium.org>