From c565bd44d1318c6bb2cc3d88d8446e4a20059753 Mon Sep 17 00:00:00 2001
From: Furquan Shaikh <furquan@chromium.org>
Date: Sat, 14 Oct 2017 19:25:30 -0700
Subject: [PATCH] soc/intel/skylake: Support logging wake source in SMM

This change adds support for logging wake source information in gsmi
callbacks. With this change, all the elog logging infrastructure can
be used for S0ix as well as S3 on skylake.

BUG=b:67874513

Change-Id: Ie1f81e956fe0bbe2e5e4c706f27997b7bd30d5e0
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/22086
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
---
 src/soc/intel/skylake/Makefile.inc | 1 +
 src/soc/intel/skylake/elog.c       | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc
index 9a8372b8f1..bc53922670 100644
--- a/src/soc/intel/skylake/Makefile.inc
+++ b/src/soc/intel/skylake/Makefile.inc
@@ -72,6 +72,7 @@ ramstage-y += uart.c
 ramstage-$(CONFIG_UART_DEBUG) += uart_debug.c
 ramstage-y += vr_config.c
 
+smm-y += elog.c
 smm-y += gpio.c
 smm-y += pch.c
 smm-y += pmutil.c
diff --git a/src/soc/intel/skylake/elog.c b/src/soc/intel/skylake/elog.c
index c015a7849a..8240457856 100644
--- a/src/soc/intel/skylake/elog.c
+++ b/src/soc/intel/skylake/elog.c
@@ -20,6 +20,7 @@
 #include <device/pci_ops.h>
 #include <stdint.h>
 #include <elog.h>
+#include <intelblocks/pmclib.h>
 #include <soc/pci_devs.h>
 #include <soc/pm.h>
 #include <soc/smbus.h>
@@ -382,3 +383,10 @@ static void pch_log_state(void *unused)
 }
 
 BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, pch_log_state, NULL);
+
+void elog_gsmi_cb_platform_log_wake_source(void)
+{
+	struct chipset_power_state ps;
+	pmc_fill_pm_reg_info(&ps);
+	pch_log_wake_source(&ps);
+}