Implement pre-training steps, which consist of enabling ECC I/O and
filling the WDB (Write Data Buffer, stores test patterns) through a
magic LDAT port.
Change-Id: Ie2e09e3b218c4569ed8de5c5e1b05d491032e0f1
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64190
Reviewed-by: Alicja Michalska <ahplka19@gmail.com>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
9d0897a0bc