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authorDuncan Laurie <dlaurie@google.com>2018-10-15 15:18:01 +0000
committerDuncan Laurie <dlaurie@chromium.org>2018-10-31 18:30:04 +0000
commitd978174d1dec9a4afba0510933eb34aee63355d5 (patch)
tree31eb53940770017e236d45646509e22b2a1c3906
parent421a962cc6b226e07afa5c580ef2df310c03e04e (diff)
downloadcoreboot-d978174d1dec9a4afba0510933eb34aee63355d5.tar.xz
ec/google/wilco: Add SMM handlers
Add EC handlers for specific SMM actions: - on entry to sleep state tell the EC to save state and to prepare for the host to enter sleep - on ACPI enable/disable send command to the EC - add a function to print SMI reasons when eSPI SMI is received These need to be called by the mainboard handlers which will be done when a board is added that uses this EC. Change-Id: Ibabdc1462e0a8df405f9520244b83684e2ccf2f5 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/29119 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/ec/google/wilco/Makefile.inc1
-rw-r--r--src/ec/google/wilco/smihandler.c59
-rw-r--r--src/ec/google/wilco/smm.h47
3 files changed, 107 insertions, 0 deletions
diff --git a/src/ec/google/wilco/Makefile.inc b/src/ec/google/wilco/Makefile.inc
index c011ebf0e6..33eefd555b 100644
--- a/src/ec/google/wilco/Makefile.inc
+++ b/src/ec/google/wilco/Makefile.inc
@@ -1,5 +1,6 @@
ifeq ($(CONFIG_EC_GOOGLE_WILCO),y)
ramstage-y += chip.c commands.c mailbox.c
+smm-y += commands.c mailbox.c smihandler.c
endif
diff --git a/src/ec/google/wilco/smihandler.c b/src/ec/google/wilco/smihandler.c
new file mode 100644
index 0000000000..8c4bfd364d
--- /dev/null
+++ b/src/ec/google/wilco/smihandler.c
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 Google LLC
+ *
+ * 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 "commands.h"
+#include "ec.h"
+#include "smm.h"
+
+void wilco_ec_smi_sleep(int slp_type)
+{
+ switch (slp_type) {
+ case ACPI_S3:
+ wilco_ec_slp_en();
+ break;
+ case ACPI_S5:
+ wilco_ec_power_off(EC_SWOFF_ACPI);
+ break;
+ }
+}
+
+void wilco_ec_smi_apmc(int apmc)
+{
+ switch (apmc) {
+ case APM_CNT_ACPI_ENABLE:
+ wilco_ec_send(KB_ACPI, ACPI_ON);
+ break;
+ case APM_CNT_ACPI_DISABLE:
+ wilco_ec_send(KB_ACPI, ACPI_OFF);
+ break;
+ }
+}
+
+void wilco_ec_smi_espi(void)
+{
+ struct ec_pm_event_state pm;
+
+ if (!wilco_ec_get_pm(&pm, true)) {
+ printk(BIOS_INFO,
+ "EC SMI: %02x_%02x-%02x_%02x_%02x_%02x_%02x_%02x-%02x",
+ pm.event[0], pm.event[1],
+ pm.state[0], pm.state[1], pm.state[2],
+ pm.state[3], pm.state[4], pm.state[5], pm.hotkey);
+ }
+}
diff --git a/src/ec/google/wilco/smm.h b/src/ec/google/wilco/smm.h
new file mode 100644
index 0000000000..692cdef2fe
--- /dev/null
+++ b/src/ec/google/wilco/smm.h
@@ -0,0 +1,47 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 Google LLC
+ *
+ * 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.
+ */
+
+#ifndef EC_GOOGLE_WILCO_SMM_H
+#define EC_GOOGLE_WILCO_SMM_H
+
+/* Handlers for SMI events */
+
+/**
+ * wilco_ec_smi_sleep
+ *
+ * Perform EC actions before suspend or power-off.
+ *
+ * @slp_type: Requested sleep type
+ */
+void wilco_ec_smi_sleep(int slp_type);
+
+/**
+ * wilco_ec_smi_apmc
+ *
+ * Perform EC actions on ACPI OS commands.
+ * This is used when the OS enables or disables ACPI.
+ *
+ * @apmc: OS command
+ */
+void wilco_ec_smi_apmc(int apmc);
+
+/**
+ * wilco_ec_smi_espi
+ *
+ * Perform EC actions on EC eSPI SMI interrupt.
+ */
+void wilco_ec_smi_espi(void);
+
+#endif /* EC_GOOGLE_WILCO_SMM_H */