Change in coreboot[master]: soc/intel/cannonlake: Disable Legacy PME for Root ports

[Subrata Banik (Code Review)]

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/28947

Change subject: soc/intel/cannonlake: Disable Legacy PME for Root ports
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soc/intel/cannonlake: Disable Legacy PME for Root ports

Legacy PME are enabled by default in FSP-S UPD. This patch to override
root port legacy pme upd policy from coreboot.

BUG=b:113083354
BRANCH=none
TEST=Able to make S3 resume using wake on wifi connect/disconnect usecase

Change-Id: I779fac711eeeed65ea379fad1cc400052d8a00eb
Signed-off-by: Subrata Banik 
---
M src/soc/intel/cannonlake/fsp_params.c
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/47/28947/1

diff --git a/src/soc/intel/cannonlake/fsp_params.c b/src/soc/intel/cannonlake/fsp_params.c
index cbc97b2..d5233ed 100644
--- a/src/soc/intel/cannonlake/fsp_params.c
+++ b/src/soc/intel/cannonlake/fsp_params.c
@@ -129,6 +129,9 @@
    /* S0ix */
    params->PchPmSlpS0Enable = config->s0ix_enable;

+	/* disable Legacy PME */
+	memset(params->PcieRpPmSci, 0, sizeof(params->PcieRpPmSci));
+
    /* USB */
    for (i = 0; i < ARRAY_SIZE(config->usb2_ports); i++) {
    	params->PortUsb20Enable[i] = config->usb2_ports[i].enable;