src/drivers/intel/fsp2_0/include/fsp/api.h

/* SPDX-License-Identifier: GPL-2.0-or-later */

#ifndef _FSP2_0_API_H_
#define _FSP2_0_API_H_

#include <stddef.h>
#include <stdint.h>
#include <fsp/soc_binding.h>
#include <soc/intel/common/mma.h>

#define FSP_SUCCESS	EFI_SUCCESS
#define FSP_INVALID_PARAMETER	EFI_INVALID_PARAMETER
#define FSP_DEVICE_ERROR	EFI_DEVICE_ERROR
#define FSP_NOT_FOUND	EFI_NOT_FOUND
#define FSP_NOT_STARTED	EFI_NOT_STARTED
#define FSP_UNSUPPORTED	EFI_UNSUPPORTED

enum fsp_boot_mode {
	FSP_BOOT_WITH_FULL_CONFIGURATION = 0x00,
	FSP_BOOT_WITH_MINIMAL_CONFIGURATION = 0x01,
	FSP_BOOT_ASSUMING_NO_CONFIGURATION_CHANGES = 0x02,
	FSP_BOOT_ON_S4_RESUME = 0x05,
	FSP_BOOT_ON_S3_RESUME = 0x11,
	FSP_BOOT_ON_FLASH_UPDATE = 0x12,
	FSP_BOOT_IN_RECOVERY_MODE = 0x20
};

enum fsp_notify_phase {
	AFTER_PCI_ENUM = 0x20,
	READY_TO_BOOT = 0x40,
	END_OF_FIRMWARE = 0xF0
};

/* Main FSP stages */
void preload_fspm(void);
void fsp_memory_init(bool s3wake);
void preload_fsps(void);
void fsp_silicon_init(void);

/*
 * Load FSP-S from stage cache or CBFS. This allows SoCs to load FSPS-S
 * separately from calling silicon init. It might be required in cases where
 * stage cache is no longer available by the point SoC calls into silicon init.
 */
void fsps_load(void);

/* Callbacks for updating stage-specific parameters */
void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version);
void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd);
/* Callbacks for SoC/Mainboard specific overrides */
void platform_fsp_multi_phase_init_cb(uint32_t phase_index);
/* Check if MultiPhase Si Init is enabled */
bool fsp_is_multi_phase_init_enabled(void);
/*
 * The following functions are used when FSP_PLATFORM_MEMORY_SETTINGS_VERSION
 * is employed allowing the mainboard and SoC to supply their own version
 * for memory settings respectively. The valid values are 0-15 for each
 * function.
 */
uint8_t fsp_memory_mainboard_version(void);
uint8_t fsp_memory_soc_version(void);

/* Callback after processing FSP notify */
void platform_fsp_notify_status(enum fsp_notify_phase phase);

/* Initialize memory margin analysis settings. */
void setup_mma(FSP_M_CONFIG *memory_cfg);
/* Update the SOC specific logo param and load the logo. */
void soc_load_logo(FSPS_UPD *supd);
/* Update the SOC specific memory config param for mma. */
void soc_update_memory_params_for_mma(FSP_M_CONFIG *memory_cfg,
	struct mma_config_param *mma_cfg);

/*
 * As per FSP integration guide:
 * If bootloader needs to take control of APs back, a full AP re-initialization is
 * required after FSP-S is completed and control has been transferred back to bootloader
 */
void do_mpinit_after_fsp(void);

/*
 * # DOCUMENTATION:
 *
 * This file defines the interface between coreboot and the FSP 2.0 wrapper
 * fsp_memory_init(), fsp_silicon_init(), and fsp_notify() are the main entry
 * points and map 1:1 to the FSP entry points of the same name.
 *
 * ### fsp_memory_init():
 *     - s3wake: boolean indicating if the system is waking from resume
 *
 * This function is responsible for loading and executing the memory
 * initialization code from the FSP-M binary. It expects this binary to reside
 * in cbfs as FSP_M_FILE.
 *
 * The function takes one parameter, which is described above, but does not
 * take in memory parameters as an argument. The memory parameters can be filled
 * in with platform_fsp_memory_init_params_cb(). This is a callback symbol
 * that fsp_memory_init() will call. The platform must provide this symbol.
 *
 *
 * ### fsp_silicon_init():
 *
 * This function is responsible for loading and executing the silicon
 * initialization code from the FSP-S binary. It expects this binary to reside
 * in cbfs as FSP_S_FILE.
 *
 * Like fsp_memory_init(), it provides a callback to fill in FSP-specific
 * parameters, via platform_fsp_silicon_init_params_cb(). The platform must
 * also provide this symbol.
 *
 *
 * ### fsp_notify():
 *     - phase: Which FSP notification phase
 *
 * This function is responsible for loading and executing the notify code from
 * the FSP-S binary. It expects that fsp_silicon_init() has already been called
 * successfully, and that the FSP-S binary is still loaded into memory.
 */

#endif /* _FSP2_0_API_H_ */