/**
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******************************************************************************
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* @file EEPROM_Emul/Porting/STM32L4/flash_interface.c
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* @author MCD Application Team
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* @brief This file provides all the EEPROM emulation flash interface functions.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2020 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "eeprom_emul.h"
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#include "flash_interface.h"
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__STATIC_FORCEINLINE uint32_t disable_int(void)
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{
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uint32_t s = __get_PRIMASK();
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__disable_irq();
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return s;
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}
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__STATIC_FORCEINLINE void restore_int(uint32_t s)
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{
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__set_PRIMASK(s);
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}
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/** @addtogroup EEPROM_Emulation
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private constants ---------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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#if defined(FLASH_BANK_2)
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static uint32_t GetBankNumber(uint32_t Address);
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#endif
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/* Exported functions --------------------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/** @addtogroup EEPROM_Private_Functions
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* @{
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*/
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/**
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* @brief Write a double word at the given address in Flash
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* @param Address Where to write
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* @param Data What to write
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* @retval EE_Status
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* - EE_OK: on success
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* - EE_WRITE_ERROR: if an error occurs
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*/
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EE_Status FI_WriteDoubleWord(uint32_t Address, uint64_t Data)
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{
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EE_Status status = EE_OK;
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uint32_t data0 = (uint32_t)(Data >> 0);
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uint32_t data1 = (uint32_t)(Data >> 32);
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uint32_t int_state = disable_int();
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if (FLASH_Program2LongWord(Address, data0, data1) == 0)
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{
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FLASH_LaunchCMD();
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while (FLASH_GetCmdFinshFlag() == 0)
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{
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}
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if (FLASH_CheckErrStatus() != 0)
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{
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status = EE_WRITE_ERROR;
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}
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}
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restore_int(int_state);
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return status;
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}
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/**
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* @brief Erase a page in polling mode
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* @param Page Page number
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* @param NbPages Number of pages to erase
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* @retval EE_Status
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* - EE_OK: on success
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* - EE error code: if an error occurs
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*/
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EE_Status FI_PageErase(uint32_t Page, uint16_t NbPages)
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{
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EE_Status status = EE_OK;
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uint32_t addr = FLASH_BASE + Page * FLASH_PAGE_SIZE;
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uint32_t int_state = disable_int();
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while (NbPages > 0)
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{
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if (FLASH_EraseSector(addr) == 0)
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{
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FLASH_LaunchCMD();
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while (FLASH_GetCmdFinshFlag() == 0)
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{
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}
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if (FLASH_CheckErrStatus() != 0)
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{
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status = EE_ERASE_ERROR;
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break;
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}
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addr += FLASH_PAGE_SIZE;
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NbPages--;
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}
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}
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restore_int(int_state);
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return status;
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}
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/**
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* @brief Erase a page with interrupt enabled
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* @param Page Page number
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* @param NbPages Number of pages to erase
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* @retval EE_Status
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* - EE_OK: on success
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* - EE error code: if an error occurs
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*/
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EE_Status FI_PageErase_IT(uint32_t Page, uint16_t NbPages)
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{
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return EE_ERASE_ERROR;
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}
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/**
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* @brief Flush the caches if needed to keep coherency when the flash content is modified
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*/
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void FI_CacheFlush()
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{
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/* No flush needed. There is no D-Cache for the STM32G0x0 and STM32G0x1 products. */
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}
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#if defined(FLASH_BANK_2)
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/**
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* @brief Gets the bank of a given address
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* @param Address Address of the FLASH Memory
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* @retval Bank_Number The bank of a given address
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*/
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static uint32_t GetBankNumber(uint32_t Address)
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{
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uint32_t bank = 0U;
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if (READ_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_FB_MODE) == 0U)
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{
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/* No Bank swap */
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if (Address < (FLASH_BASE + FLASH_BANK_SIZE))
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{
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bank = FLASH_BANK_1;
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}
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else
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{
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bank = FLASH_BANK_2;
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}
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}
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else
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{
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/* Bank swap */
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if (Address < (FLASH_BASE + FLASH_BANK_SIZE))
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{
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bank = FLASH_BANK_2;
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}
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else
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{
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bank = FLASH_BANK_1;
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}
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}
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return bank;
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}
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#endif
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/**
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* @brief Delete corrupted Flash address, can be called from NMI. No Timeout.
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* @param Address Address of the FLASH Memory to delete
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* @retval EE_Status
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* - EE_OK: on success
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* - EE error code: if an error occurs
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*/
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EE_Status FI_DeleteCorruptedFlashAddress(uint32_t Address)
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{
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return EE_OK;
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}
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/**
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* @brief Check if the configuration is 128-bits bank or 2*64-bits bank
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* @param None
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* @retval EE_Status
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* - EE_OK: on success
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* - EE error code: if an error occurs
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*/
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EE_Status FI_CheckBankConfig(void)
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{
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return EE_OK;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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