/**
 ******************************************************************************
 * @file    EEPROM_Emul/Porting/STM32L4/flash_interface.c
 * @author  MCD Application Team
 * @brief   This file provides all the EEPROM emulation flash interface functions.
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
 * All rights reserved.</center></h2>
 *
 * This software component is licensed by ST under BSD 3-Clause license,
 * the "License"; You may not use this file except in compliance with the
 * License. You may obtain a copy of the License at:
 *                        opensource.org/licenses/BSD-3-Clause
 *
 ******************************************************************************
 */

/* Includes ------------------------------------------------------------------*/
#include "eeprom_emul.h"
#include "flash_interface.h"

__STATIC_FORCEINLINE uint32_t disable_int(void)
{
  uint32_t s = __get_PRIMASK();
  __disable_irq();
  return s;
}

__STATIC_FORCEINLINE void restore_int(uint32_t s)
{
  __set_PRIMASK(s);
}

/** @addtogroup EEPROM_Emulation
 * @{
 */

/* Private typedef -----------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
#if defined(FLASH_BANK_2)
static uint32_t GetBankNumber(uint32_t Address);
#endif

/* Exported functions --------------------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @addtogroup EEPROM_Private_Functions
 * @{
 */

/**
 * @brief  Write a double word at the given address in Flash
 * @param  Address Where to write
 * @param  Data What to write
 * @retval EE_Status
 *           - EE_OK: on success
 *           - EE_WRITE_ERROR: if an error occurs
 */
EE_Status FI_WriteDoubleWord(uint32_t Address, uint64_t Data)
{
  EE_Status status = EE_OK;
  uint32_t data0 = (uint32_t)(Data >> 0);
  uint32_t data1 = (uint32_t)(Data >> 32);
  uint32_t int_state = disable_int();
  if (FLASH_Program2LongWord(Address, data0, data1) == 0)
  {
    FLASH_LaunchCMD();
    while (FLASH_GetCmdFinshFlag() == 0)
    {
    }
    if (FLASH_CheckErrStatus() != 0)
    {
      status = EE_WRITE_ERROR;
    }
  }
  restore_int(int_state);
  return status;
}

/**
 * @brief  Erase a page in polling mode
 * @param  Page Page number
 * @param  NbPages Number of pages to erase
 * @retval EE_Status
 *           - EE_OK: on success
 *           - EE error code: if an error occurs
 */
EE_Status FI_PageErase(uint32_t Page, uint16_t NbPages)
{
  EE_Status status = EE_OK;
  uint32_t addr = FLASH_BASE + Page * FLASH_PAGE_SIZE;
  uint32_t int_state = disable_int();
  while (NbPages > 0)
  {
    if (FLASH_EraseSector(addr) == 0)
    {
      FLASH_LaunchCMD();
      while (FLASH_GetCmdFinshFlag() == 0)
      {
      }
      if (FLASH_CheckErrStatus() != 0)
      {
        status = EE_ERASE_ERROR;
        break;
      }
      addr += FLASH_PAGE_SIZE;
      NbPages--;
    }
  }
  restore_int(int_state);
  return status;
}

/**
 * @brief  Erase a page with interrupt enabled
 * @param  Page Page number
 * @param  NbPages Number of pages to erase
 * @retval EE_Status
 *           - EE_OK: on success
 *           - EE error code: if an error occurs
 */
EE_Status FI_PageErase_IT(uint32_t Page, uint16_t NbPages)
{
  return EE_ERASE_ERROR;
}

/**
 * @brief  Flush the caches if needed to keep coherency when the flash content is modified
 */
void FI_CacheFlush()
{
  /* No flush needed. There is no D-Cache for the STM32G0x0 and STM32G0x1 products. */
}

#if defined(FLASH_BANK_2)
/**
 * @brief  Gets the bank of a given address
 * @param  Address Address of the FLASH Memory
 * @retval Bank_Number The bank of a given address
 */
static uint32_t GetBankNumber(uint32_t Address)
{
  uint32_t bank = 0U;

  if (READ_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_FB_MODE) == 0U)
  {
    /* No Bank swap */
    if (Address < (FLASH_BASE + FLASH_BANK_SIZE))
    {
      bank = FLASH_BANK_1;
    }
    else
    {
      bank = FLASH_BANK_2;
    }
  }
  else
  {
    /* Bank swap */
    if (Address < (FLASH_BASE + FLASH_BANK_SIZE))
    {
      bank = FLASH_BANK_2;
    }
    else
    {
      bank = FLASH_BANK_1;
    }
  }

  return bank;
}
#endif

/**
 * @brief  Delete corrupted Flash address, can be called from NMI. No Timeout.
 * @param  Address Address of the FLASH Memory to delete
 * @retval EE_Status
 *           - EE_OK: on success
 *           - EE error code: if an error occurs
 */
EE_Status FI_DeleteCorruptedFlashAddress(uint32_t Address)
{
  return EE_OK;
}

/**
 * @brief  Check if the configuration is 128-bits bank or 2*64-bits bank
 * @param  None
 * @retval EE_Status
 *           - EE_OK: on success
 *           - EE error code: if an error occurs
 */
EE_Status FI_CheckBankConfig(void)
{
  return EE_OK;
}

/**
 * @}
 */

/**
 * @}
 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/