/* SPDX-License-Identifier: BSD-3-Clause */
/*
 * Copyright (c) 2017-2020, STMicroelectronics
 */

#ifndef __STM32_BSEC_H
#define __STM32_BSEC_H

#include <compiler.h>
#include <stdint.h>
#include <tee_api.h>

/*
 * Load OTP from SAFMEM and provide its value
 * @value: Output read value
 * @otp_id: OTP number
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_shadow_read_otp(uint32_t *value, uint32_t otp_id);

/*
 * Copy SAFMEM OTP to BSEC data.
 * @otp_id: OTP number.
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_shadow_register(uint32_t otp_id);

/*
 * Read an OTP data value
 * @value: Output read value
 * @otp_id: OTP number
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_read_otp(uint32_t *value, uint32_t otp_id);

/*
 * Write value in BSEC data register
 * @value: Value to write
 * @otp_id: OTP number
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_write_otp(uint32_t value, uint32_t otp_id);

/*
 * Program a bit in SAFMEM without BSEC data refresh
 * @value: Value to program.
 * @otp_id: OTP number.
 * Return a TEE_Result compliant return value
 */
#ifdef CFG_STM32_BSEC_WRITE
TEE_Result stm32_bsec_program_otp(uint32_t value, uint32_t otp_id);
#else
static inline TEE_Result stm32_bsec_program_otp(uint32_t value __unused,
						uint32_t otp_id __unused)
{
	return TEE_ERROR_NOT_SUPPORTED;
}
#endif

/*
 * Permanent lock of OTP in SAFMEM
 * @otp_id: OTP number
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_permanent_lock_otp(uint32_t otp_id);

/*
 * Enable/disable debug service
 * @value: Value to write
 * Return a TEE_Result compliant return value
 */
#ifdef CFG_STM32_BSEC_WRITE
TEE_Result stm32_bsec_write_debug_conf(uint32_t value);
#else
static inline TEE_Result stm32_bsec_write_debug_conf(uint32_t value __unused)
{
	return TEE_ERROR_NOT_SUPPORTED;
}
#endif

/* Return debug configuration read from BSEC */
uint32_t stm32_bsec_read_debug_conf(void);

/*
 * Write shadow-read lock
 * @otp_id: OTP number
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_set_sr_lock(uint32_t otp_id);

/*
 * Read shadow-read lock
 * @otp_id: OTP number
 * @locked: (out) true if shadow-read is locked, false if not locked.
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_read_sr_lock(uint32_t otp_id, bool *locked);

/*
 * Write shadow-write lock
 * @otp_id: OTP number
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_set_sw_lock(uint32_t otp_id);

/*
 * Read shadow-write lock
 * @otp_id: OTP number
 * @locked: (out) true if shadow-write is locked, false if not locked.
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_read_sw_lock(uint32_t otp_id, bool *locked);

/*
 * Write shadow-program lock
 * @otp_id: OTP number
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_set_sp_lock(uint32_t otp_id);

/*
 * Read shadow-program lock
 * @otp_id: OTP number
 * @locked: (out) true if shadow-program is locked, false if not locked.
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_read_sp_lock(uint32_t otp_id, bool *locked);

/*
 * Read permanent lock status
 * @otp_id: OTP number
 * @locked: (out) true if permanent lock is locked, false if not locked.
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_read_permanent_lock(uint32_t otp_id, bool *locked);

/*
 * Lock Upper OTP or Global programming or debug enable
 * @service: Service to lock, see header file
 * Return a TEE_Result compliant return value
 */
TEE_Result stm32_bsec_otp_lock(uint32_t service);

/*
 * Return true if non-secure world is allowed to read the target OTP
 * @otp_id: OTP number
 */
bool stm32_bsec_nsec_can_access_otp(uint32_t otp_id);

#endif /*__STM32_BSEC_H*/