[coreboot-gerrit] Change in coreboot[master]: soc/intel/skylake: Add entry for deep Sx wake

[Furquan Shaikh (Code Review)]

Furquan Shaikh has uploaded a new change for review. ( https://review.coreboot.org/19798 )

Change subject: soc/intel/skylake: Add entry for deep Sx wake
......................................................................

soc/intel/skylake: Add entry for deep Sx wake

If deep Sx is enabled and prev sleep state was not S0, then if SUS
power was lost, it means that the platform had entered deep Sx. Add an
elog entry for deep Sx variant in this case.

BUG=b:38436041
TEST=Verified that elog entries are updated correctly:

Deep S5:
59 | 2017-05-19 10:39:08 | Kernel Event | Clean Shutdown
60 | 2017-05-19 10:39:09 | ACPI Enter | S5
61 | 2017-05-19 10:39:17 | System boot | 22
62 | 2017-05-19 10:39:17 | EC Event | Power Button
63 | 2017-05-19 10:39:17 | ACPI Deep Sx Wake | S5
64 | 2017-05-19 10:39:17 | Wake Source | Power Button | 0
65 | 2017-05-19 10:39:17 | Chrome OS Developer Mode

Deep S3:
66 | 2017-05-19 10:40:11 | ACPI Enter | S3
67 | 2017-05-19 10:40:16 | EC Event | Power Button
68 | 2017-05-19 10:40:16 | ACPI Deep Sx Wake | S3
69 | 2017-05-19 10:40:16 | Wake Source | Power Button | 0

Normal S3:
77 | 2017-05-19 10:43:22 | ACPI Enter | S3
78 | 2017-05-19 10:43:39 | EC Event | Power Button
79 | 2017-05-19 10:43:39 | ACPI Wake | S3
80 | 2017-05-19 10:43:39 | Wake Source | Power Button | 0

Change-Id: Ia251334ae44668c2260d8d2e816f85f1f62faac4
Signed-off-by: Furquan Shaikh <furquan at chromium.org>
---
M src/soc/intel/skylake/elog.c
1 file changed, 20 insertions(+), 4 deletions(-)


  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/19798/1

diff --git a/src/soc/intel/skylake/elog.c b/src/soc/intel/skylake/elog.c
index 562df08..6db15f5 100644
--- a/src/soc/intel/skylake/elog.c
+++ b/src/soc/intel/skylake/elog.c
@@ -70,6 +70,17 @@
 
 static void pch_log_power_and_resets(struct chipset_power_state *ps)
 {
+	bool deep_sx;
+
+	/*
+	 * Platform entered deep Sx if:
+	 * 1. Prev sleep state was Sx and deep_sx_enabled() is true
+	 * 2. SUS well power was lost
+	 */
+	deep_sx = ((((ps->prev_sleep_state == ACPI_S3) && deep_s3_enabled()) ||
+		   ((ps->prev_sleep_state == ACPI_S5) && deep_s5_enabled())) &&
+		   (ps->gen_pmcon_b & SUS_PWR_FLR));
+
 	/* Thermal Trip */
 	if (ps->gblrst_cause[0] & GBLRST_CAUSE0_THERMTRIP)
 		elog_add_event(ELOG_TYPE_THERM_TRIP);
@@ -81,8 +92,7 @@
 	/* SUS Well Power Failure */
 	if (ps->gen_pmcon_b & SUS_PWR_FLR) {
 		/* Do not log SUS_PWR_FLR if waking from deep Sx */
-		if (!(ps->prev_sleep_state == ACPI_S3 && deep_s3_enabled()) &&
-		    !(ps->prev_sleep_state == ACPI_S5 && deep_s5_enabled()))
+		if (!deep_sx)
 			elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
 	}
 
@@ -104,8 +114,14 @@
 		elog_add_event(ELOG_TYPE_SYSTEM_RESET);
 
 	/* ACPI Wake Event */
-	if (ps->prev_sleep_state != ACPI_S0)
-		elog_add_event_byte(ELOG_TYPE_ACPI_WAKE, ps->prev_sleep_state);
+	if (ps->prev_sleep_state != ACPI_S0) {
+		if (deep_sx)
+			elog_add_event_byte(ELOG_TYPE_ACPI_DEEP_WAKE,
+					    ps->prev_sleep_state);
+		else
+			elog_add_event_byte(ELOG_TYPE_ACPI_WAKE,
+					    ps->prev_sleep_state);
+	}
 }
 
 static void pch_log_state(void *unused)

-- 
To view, visit https://review.coreboot.org/19798
To unsubscribe, visit https://review.coreboot.org/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: Ia251334ae44668c2260d8d2e816f85f1f62faac4
Gerrit-PatchSet: 1
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-Owner: Furquan Shaikh <furquan at google.com>