You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
toaster-oven-bluepill/Lib/EEPROM_Emul/Porting/STM32G0/flash_interface.c

266 lines
6.6 KiB

/**
******************************************************************************
* @file EEPROM_Emul/Porting/STM32G0/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"
/** @addtogroup EEPROM_Emulation
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
#ifdef 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
*/
HAL_StatusTypeDef FI_WriteDoubleWord(uint32_t Address, uint64_t Data)
{
return HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, Address, Data);
}
/**
* @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;
FLASH_EraseInitTypeDef s_eraseinit;
uint32_t page_error = 0U;
#ifdef FLASH_BANK_2
uint32_t bank = GetBankNumber(PAGE_ADDRESS(Page));
s_eraseinit.Banks = bank;
#endif
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.NbPages = NbPages;
s_eraseinit.Page = Page;
/* Erase the Page: Set Page status to ERASED status */
if (HAL_FLASHEx_Erase(&s_eraseinit, &page_error) != HAL_OK)
{
status = EE_ERASE_ERROR;
}
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)
{
EE_Status status = EE_OK;
FLASH_EraseInitTypeDef s_eraseinit;
#ifdef FLASH_BANK_2
uint32_t bank = GetBankNumber(PAGE_ADDRESS(Page));
s_eraseinit.Banks = bank;
#endif
s_eraseinit.TypeErase = FLASH_TYPEERASE_PAGES;
s_eraseinit.NbPages = NbPages;
s_eraseinit.Page = Page;
/* Erase the Page: Set Page status to ERASED status */
if (HAL_FLASHEx_Erase_IT(&s_eraseinit) != HAL_OK)
{
status = EE_ERASE_ERROR;
}
return status;
}
/**
* @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. */
return;
}
#ifdef 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 (OB_USER_DUALBANK_SWAP_DISABLE)
{
/* 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)
{
EE_Status status = EE_OK;
/* Set FLASH Programmation bit */
SET_BIT(FLASH->CR, FLASH_CR_PG);
/* Program double word of value 0 */
*(__IO uint32_t*)(Address) = (uint32_t)0U;
*(__IO uint32_t*)(Address+4U) = (uint32_t)0U;
/* Wait programmation completion */
#if defined(FLASH_DBANK_SUPPORT)
uint32_t bank = GetBankNumber(Address);
if(bank == FLASH_BANK_1)
{
while(FLASH->SR & FLASH_SR_BSY1)
{
}
}
else
{
while(FLASH->SR & FLASH_SR_BSY2)
{
}
}
#else
while(FLASH->SR & FLASH_SR_BSY1)
{
}
#endif
/* Check if error occured */
if((FLASH->SR & FLASH_SR_OPERR) || (FLASH->SR & FLASH_SR_PROGERR) ||
(FLASH->SR & FLASH_SR_WRPERR) || (FLASH->SR & FLASH_SR_PGAERR) ||
(FLASH->SR & FLASH_SR_SIZERR) || (FLASH->SR & FLASH_SR_PGSERR))
{
status = EE_DELETE_ERROR;
}
/* Check FLASH End of Operation flag */
if (FLASH->SR & FLASH_SR_EOP)
{
/* Clear FLASH End of Operation pending bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
}
/* Clear FLASH Programmation bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
/* Clear FLASH ECCD bit */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ECCD);
return status;
}
/**
* @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)
{
#if defined (FLASH_DBANK_SUPPORT)
EE_Status status;
/* Check the value of the DBANK user option byte */
if (OB_USER_DUALBANK_ENABLE)
{
status = EE_OK;
}
else
{
status = EE_INVALID_BANK_CFG;
}
return status;
#else
/* No feature 128-bits single bank, so always 64-bits dual bank */
return EE_OK;
#endif
}
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/