1 files changed, 90 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/smihandler.c b/src/ec/google/chromeec/smihandler.c
new file mode 100644
index 0000000000..75636ea8c1
--- /dev/null
+++ b/src/ec/google/chromeec/smihandler.c
@@ -0,0 +1,90 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2016 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/acpi.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <ec/google/chromeec/ec.h>
+#include <elog.h>
+#include <halt.h>
+#include "smm.h"
+
+static int chromeec_process_one_event(void)
+{
+	uint8_t event = google_chromeec_get_event();
+
+	/* Log this event */
+	if (IS_ENABLED(CONFIG_ELOG_GSMI) && event)
+		elog_add_event_byte(ELOG_TYPE_EC_EVENT, event);
+
+	switch (event) {
+	case EC_HOST_EVENT_LID_CLOSED:
+		printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
+
+		poweroff();
+		break;
+	}
+	return !!event;
+}
+
+void chromeec_smi_process_events(void)
+{
+	/* Process all pending events */
+	while (chromeec_process_one_event())
+		;
+}
+
+static void clear_pending_events(void)
+{
+	while (google_chromeec_get_event() != 0)
+		;
+}
+
+void chromeec_smi_sleep(int slp_type, uint32_t s3_mask, uint32_t s5_mask)
+{
+	switch (slp_type) {
+	case ACPI_S3:
+		/* Enable wake events */
+		google_chromeec_set_wake_mask(s3_mask);
+		break;
+	case ACPI_S5:
+		/* Enable wake events */
+		google_chromeec_set_wake_mask(s5_mask);
+		break;
+	}
+
+	/* Disable SCI and SMI events */
+	google_chromeec_set_smi_mask(0);
+	google_chromeec_set_sci_mask(0);
+
+	/* Clear pending events that may trigger immediate wake */
+	clear_pending_events();
+}
+
+void chromeec_smi_apmc(int apmc, uint32_t sci_mask, uint32_t smi_mask)
+{
+	switch (apmc) {
+	case APM_CNT_ACPI_ENABLE:
+		google_chromeec_set_smi_mask(0);
+		clear_pending_events();
+		google_chromeec_set_sci_mask(sci_mask);
+		break;
+	case APM_CNT_ACPI_DISABLE:
+		google_chromeec_set_sci_mask(0);
+		clear_pending_events();
+		google_chromeec_set_smi_mask(smi_mask);
+		break;
+	}
+}