util/ifdtool: Enable CPU read of the ME region

We are implementing a mechanism in coreboot to update CSME firmware,
this requires coreboot to be able to read CSME region. Exposing the
CSME data is not an issue since the data stored by CSE is all encrypted.

This patch provides a command line option "-r" which will enable read
access to CSME region when locking.

Without this change, locking SPI regions using ifdtool will block BIOS
access to read/access CSME. This will cause failure since BIOS can't
read basic information such as CSME version.

TEST=Flashrom returns success while erasing the SI_ME region.
After rebooting the DUT, DUT boots into OS without any issues on
Drawlat EVT.

Signed-off-by: Usha P <usha.p@intel.com>
Change-Id: I1d9a8e17fba19b717453476fbcb7bcf95b278abe
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46441
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions