intelblocks: Add function to program GPE_EN before GPIO locking

Since coreboot locks GPIO registers after GPIO configuration, OS is not
able to program GPE_EN register to program wake events. This causes
the issue of event not getting logged into event log (since GPE_EN bit
is not set).

GPE_EN register programming is required for the GPIO pins which are
capable of generating SCI for the system wake. Elog mechanism relies
on GPE_EN and GPE_STS bit to log correct wake signal.

This patch add supports to program GPE_EN register before coreboot locks
the GPIO registers. Note that coreboot will only program GPE_EN bits for
GPIO capable of generating SCI.

This will help resolve issue where we don't see wake event GPIO in event
log.

BUG=b:222375516
BRANCH=firmware-brya-14505.B
TEST=Compile code for Brya and see GPE_EN bits set from the kernel console

Change-Id: I27e525f50c374c2cc9675e77eaa7774683a6e7c2
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64089
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Frank Wu <frank_wu@compal.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>

0 files changed, 0 insertions, 0 deletions