mb/ocp/tiogapass: Properly configure early serial output

Tioga Pass comes with AST2500 BMC which offers SuperIO functionality.
However we currently do not configure/enable SuperIO chip. As a result
system boots pretty silently on cold boot. Then FSP configures SuperIO
and resets the system so on next boot serial console does work. This
makes debugging difficult because pre-FSP output is invisible.

This patch enables bootblock to properly configure desired BMC SuperIO
port so early serial output is visible.

TEST=do a cold boot on OCP Tioga Pass, observe bootblock output starting
from bootblock.

Change-Id: Iff8e6a862858d733f529bb9b8c65e22e5ec6b521
Signed-off-by: Andrey Petrov <anpetrov@fb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39782
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>

0 files changed, 0 insertions, 0 deletions