From d978174d1dec9a4afba0510933eb34aee63355d5 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Mon, 15 Oct 2018 15:18:01 +0000 Subject: 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 Reviewed-on: https://review.coreboot.org/29119 Reviewed-by: Aaron Durbin Reviewed-by: Paul Menzel Tested-by: build bot (Jenkins) --- src/ec/google/wilco/Makefile.inc | 1 + src/ec/google/wilco/smihandler.c | 59 ++++++++++++++++++++++++++++++++++++++++ src/ec/google/wilco/smm.h | 47 ++++++++++++++++++++++++++++++++ 3 files changed, 107 insertions(+) create mode 100644 src/ec/google/wilco/smihandler.c create mode 100644 src/ec/google/wilco/smm.h (limited to 'src') 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 +#include +#include + +#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 */ -- cgit v1.2.3