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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#ifndef SOC_INTEL_COMMON_BLOCK_SMI_HANDLER_H
#define SOC_INTEL_COMMON_BLOCK_SMI_HANDLER_H
#include <device/device.h>
#include <stdint.h>
struct gpi_status;
struct global_nvs_t;
/*
* The register value is used with get_reg and set_reg
*/
enum smm_reg {
RAX,
RBX,
RCX,
RDX,
};
struct smm_save_state_ops {
/* return io_misc_info from SMM Save State Area */
uint32_t (*get_io_misc_info)(void *state);
/* return value of the requested register from
* SMM Save State Area
*/
uint64_t (*get_reg)(void *state, enum smm_reg reg);
void (*set_reg)(void *state, enum smm_reg reg, uint64_t val);
};
typedef void (*smi_handler_t)(const struct smm_save_state_ops *save_state_ops);
/*
* SOC SMI Handler has to provide this structure which has methods to access
* the SOC specific SMM Save State Area
*/
const struct smm_save_state_ops *get_smm_save_state_ops(void);
/*
* southbridge_smi should be defined inside SOC specific code and should have
* handlers for any SMI events that need to be handled. Default handlers
* for some SMI events are provided in soc/intel/common/block/smm/smihandler.c
*/
extern const smi_handler_t southbridge_smi[32];
#define SMI_HANDLER_SCI_EN(__bit) (1 << (__bit))
/*
* This function should be implemented in SOC specific code to handle
* the SMI event on SLP_EN. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_sleep(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* SMI_APM event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_apmc(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* SMI_PM1 event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_pm1(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* SMI_GPE0 event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_gpe0(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* MC event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_mc(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* minitor event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_monitor(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* SMI_TCO event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_tco(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* SMI PERIODIC_STS event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_periodic(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* SMI GPIO_STS event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_gpi(
const struct smm_save_state_ops *save_state_ops);
/*
* This function should be implemented in SOC specific code to handle
* SMI ESPI_STS event. The default functionality is provided in
* soc/intel/common/block/smm/smihandler.c
*/
void smihandler_southbridge_espi(
const struct smm_save_state_ops *save_state_ops);
/*
* Returns gnvs pointer within SMM context
*/
struct global_nvs_t *smm_get_gnvs(void);
/* SoC overrides. */
/* Specific SOC SMI handler during ramstage finalize phase */
void smihandler_soc_at_finalize(void);
/*
* This function returns a 1 or 0 depending on whether disable_busmaster
* needs to be done for the specified device on S5 entry
*/
int smihandler_soc_disable_busmaster(pci_devfn_t dev);
/* Mainboard overrides. */
/* Mainboard handler for GPI SMIs */
void mainboard_smi_gpi_handler(const struct gpi_status *sts);
/* Mainboard handler for ESPI EMIs */
void mainboard_smi_espi_handler(void);
extern const struct smm_save_state_ops em64t100_smm_ops;
extern const struct smm_save_state_ops em64t101_smm_ops;
#endif
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