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/**
******************************************************************************
* @file stm32l5xx_hal_flash_ex.c
* @author MCD Application Team
* @brief Extended FLASH HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the FLASH extended peripheral:
* + Extended programming operations functions
*
@verbatim
==============================================================================
##### Flash Extended features #####
==============================================================================
[..] Comparing to other previous devices, the FLASH interface for STM32L5xx
devices contains the following additional features
(+) Capacity up to 512 Kbytes with dual bank architecture supporting read-while-write
capability (RWW)
(+) Dual bank memory organization with possibility of 128-bits single bank
(+) Watermark-based secure area including secure hide areas
(+) Block-based secure pages
##### How to use this driver #####
==============================================================================
[..] This driver provides functions to configure and program the FLASH memory
of all STM32L5xx devices. It includes
(#) Flash Memory Erase functions:
(++) Lock and Unlock the FLASH interface using HAL_FLASH_Unlock() and
HAL_FLASH_Lock() functions
(++) Erase function: Erase page, mass erase of one or two banks
(++) There are two modes of erase :
(+++) Polling Mode using HAL_FLASHEx_Erase()
(+++) Interrupt Mode using HAL_FLASHEx_Erase_IT()
(#) Option Bytes Programming function: Use HAL_FLASHEx_OBProgram() to :
(++) Configure the write protection for each area
(++) Set the Read protection Level
(++) Program the user Option Bytes
(++) Configure the watermark security for each area including secure hide areas
(++) Configure the boot lock (BOOT_LOCK)
(++) Configure the Boot addresses
(#) Get Option Bytes Configuration function: Use HAL_FLASHEx_OBGetConfig() to :
(++) Get the value of a write protection area
(++) Know if the read protection is activated
(++) Get the value of the user Option Bytes
(++) Get the configuration of a watermark security area including secure hide areas
(++) Get the boot lock (BOOT_LOCK) configuration
(++) Get the value of a boot address
(#) Block-based secure area configuration function: Use HAL_FLASHEx_ConfigBBAttributes()
(++) Bit-field allowing to secure or un-secure each page
(#) Get the block-based secure area configuration function: Use HAL_FLASHEx_GetConfigBBAttributes()
(++) Returns the configuration of the block-based security for all the pages
(#) Activation of the secure hide area function: Use HAL_FLASHEx_EnableSecHideProtection()
(++) Deny the access to the secure hide area
(#) Privilege mode configuration function: Use HAL_FLASHEx_ConfigPrivMode()
(++) FLASH register can be protected against non-privilege accesses
(#) Get the privilege mode configuration function: Use HAL_FLASHEx_GetPrivMode()
(++) Returns if the FLASH registers are protected against non-privilege accesses
(#) Security inversion configuration function: Use HAL_FLASHEx_ConfigSecInversion()
(++) FLASH secure state can be override
(#) Get the security inversion configuration function: Use HAL_FLASHEx_GetSecInversion()
(++) Returns if FLASH secure state is override
(#) LVE pin management configuration function: Use HAL_FLASHEx_ConfigLVEPin()
(++) LVE FLASH pin can be controlled either by power controller or enforced
to low in order to use external SMPS
(#) Get LVE pin management configuration function: Use HAL_FLASHEx_GetLVEPin()
(++) Returns if LVE FLASH pin is controlled by power controller or enforced to low
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2019 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 "stm32l5xx_hal.h"
/** @addtogroup STM32L5xx_HAL_Driver
* @{
*/
/** @defgroup FLASHEx FLASHEx
* @brief FLASH Extended HAL module driver
* @{
*/
#ifdef HAL_FLASH_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup FLASHEx_Private_Functions FLASHEx Private Functions
* @{
*/
static void FLASH_MassErase(uint32_t Banks);
static void FLASH_OB_WRPConfig(uint32_t WRPArea, uint32_t WRPStartOffset, uint32_t WRPEndOffset);
static void FLASH_OB_RDPConfig(uint32_t RDPLevel);
static void FLASH_OB_UserConfig(uint32_t UserType, uint32_t UserConfig);
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
static void FLASH_OB_WMSECConfig(uint32_t WMSecConfig, uint32_t WMSecStartPage, uint32_t WMSecEndPage, uint32_t WMHDPEndPage);
static void FLASH_OB_BootLockConfig(uint32_t BootLockConfig);
#endif
static void FLASH_OB_BootAddrConfig(uint32_t BootAddrConfig, uint32_t BootAddr);
static void FLASH_OB_GetWRP(uint32_t WRPArea, uint32_t * WRPStartOffset, uint32_t * WRPEndOffset);
static uint32_t FLASH_OB_GetRDP(void);
static uint32_t FLASH_OB_GetUser(void);
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
static void FLASH_OB_GetWMSEC(uint32_t * WMSecConfig, uint32_t * WMSecStartPage, uint32_t * WMSecEndPage, uint32_t * WMHDPEndPage);
static uint32_t FLASH_OB_GetBootLock(void);
#endif
static void FLASH_OB_GetBootAddr(uint32_t BootAddrConfig, uint32_t * BootAddr);
/**
* @}
*/
/* Exported functions -------------------------------------------------------*/
/** @defgroup FLASHEx_Exported_Functions FLASH Extended Exported Functions
* @{
*/
/** @defgroup FLASHEx_Exported_Functions_Group1 Extended Programming Operation functions
* @brief Extended Programming Operation functions
*
@verbatim
===============================================================================
##### Extended Programming Operation functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to manage the Extended FLASH
programming operations Operations.
@endverbatim
* @{
*/
/**
* @brief Perform a mass erase or erase the specified FLASH memory pages.
* @param[in] pEraseInit pointer to an FLASH_EraseInitTypeDef structure that
* contains the configuration information for the erasing.
*
* @param[out] PageError pointer to variable that contains the configuration
* information on faulty page in case of error (0xFFFFFFFF means that all
* the pages have been correctly erased)
*
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_Erase(FLASH_EraseInitTypeDef *pEraseInit, uint32_t *PageError)
{
HAL_StatusTypeDef status;
uint32_t page_index;
__IO uint32_t *reg;
/* Check the parameters */
assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Reset error code */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
if (status == HAL_OK)
{
pFlash.ProcedureOnGoing = pEraseInit->TypeErase;
reg = IS_FLASH_SECURE_OPERATION() ? &(FLASH->SECCR) : &(FLASH_NS->NSCR);
if ((pFlash.ProcedureOnGoing & ~(FLASH_NON_SECURE_MASK)) == FLASH_TYPEERASE_MASSERASE)
{
/* Mass erase to be done */
FLASH_MassErase(pEraseInit->Banks);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
}
else
{
/*Initialization of PageError variable*/
*PageError = 0xFFFFFFFFU;
for(page_index = pEraseInit->Page; page_index < (pEraseInit->Page + pEraseInit->NbPages); page_index++)
{
FLASH_PageErase(page_index, pEraseInit->Banks);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if (status != HAL_OK)
{
/* In case of error, stop erase procedure and return the faulty page */
*PageError = page_index;
break;
}
}
}
/* If the erase operation is completed, disable the associated bits */
CLEAR_BIT((*reg), (pFlash.ProcedureOnGoing & ~(FLASH_NON_SECURE_MASK)));
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Perform a mass erase or erase the specified FLASH memory pages with interrupt enabled.
* @param pEraseInit pointer to an FLASH_EraseInitTypeDef structure that
* contains the configuration information for the erasing.
*
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_Erase_IT(FLASH_EraseInitTypeDef *pEraseInit)
{
HAL_StatusTypeDef status;
__IO uint32_t *reg_cr;
/* Check the parameters */
assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Reset error code */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
if (status != HAL_OK)
{
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
}
else
{
/* Set internal variables used by the IRQ handler */
pFlash.ProcedureOnGoing = pEraseInit->TypeErase;
pFlash.Bank = pEraseInit->Banks;
/* Access to SECCR or NSCR depends on operation type */
reg_cr = IS_FLASH_SECURE_OPERATION() ? &(FLASH->SECCR) : &(FLASH->NSCR);
/* Enable End of Operation and Error interrupts */
(*reg_cr) |= (FLASH_IT_EOP | FLASH_IT_OPERR);
if ((pFlash.ProcedureOnGoing & ~(FLASH_NON_SECURE_MASK)) == FLASH_TYPEERASE_MASSERASE)
{
/* Mass erase to be done */
FLASH_MassErase(pEraseInit->Banks);
}
else
{
/* Erase by page to be done */
pFlash.NbPagesToErase = pEraseInit->NbPages;
pFlash.Page = pEraseInit->Page;
/*Erase 1st page and wait for IT */
FLASH_PageErase(pEraseInit->Page, pEraseInit->Banks);
}
}
return status;
}
/**
* @brief Program Option bytes.
* @param pOBInit pointer to an FLASH_OBInitStruct structure that
* contains the configuration information for the programming.
*
* @note To configure any option bytes, the option lock bit OPTLOCK must be
* cleared with the call of HAL_FLASH_OB_Unlock() function.
* @note New option bytes configuration will be taken into account in two cases:
* - after an option bytes launch through the call of HAL_FLASH_OB_Launch()
* - after a power reset (BOR reset or exit from Standby/Shutdown modes)
*
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_OBProgram(FLASH_OBProgramInitTypeDef *pOBInit)
{
HAL_StatusTypeDef status;
/* Check the parameters */
assert_param(IS_OPTIONBYTE(pOBInit->OptionType));
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Reset error code */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Write protection configuration */
if((pOBInit->OptionType & OPTIONBYTE_WRP) != 0U)
{
/* Configure of Write protection on the selected area */
FLASH_OB_WRPConfig(pOBInit->WRPArea, pOBInit->WRPStartOffset, pOBInit->WRPEndOffset);
}
/* Read protection configuration */
if((pOBInit->OptionType & OPTIONBYTE_RDP) != 0U)
{
/* Configure the Read protection level */
FLASH_OB_RDPConfig(pOBInit->RDPLevel);
}
/* User Configuration */
if((pOBInit->OptionType & OPTIONBYTE_USER) != 0U)
{
/* Configure the user option bytes */
FLASH_OB_UserConfig(pOBInit->USERType, pOBInit->USERConfig);
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/* Watermark secure configuration */
if((pOBInit->OptionType & OPTIONBYTE_WMSEC) != 0U)
{
/* Configure the watermark-based secure area */
FLASH_OB_WMSECConfig(pOBInit->WMSecConfig, pOBInit->WMSecStartPage, pOBInit->WMSecEndPage, pOBInit->WMHDPEndPage);
}
/* Unique boot entry point configuration */
if((pOBInit->OptionType & OPTIONBYTE_BOOT_LOCK) != 0U)
{
/* Configure the unique boot entry point */
FLASH_OB_BootLockConfig(pOBInit->BootLock);
}
#endif
/* Boot address configuration */
if((pOBInit->OptionType & OPTIONBYTE_BOOTADDR) != 0U)
{
/* Configure the boot address */
FLASH_OB_BootAddrConfig(pOBInit->BootAddrConfig, pOBInit->BootAddr);
}
/* Set OPTSTRT Bit */
SET_BIT(FLASH->NSCR, FLASH_NSCR_OPTSTRT);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Get the Option bytes configuration.
* @param pOBInit pointer to an FLASH_OBInitStruct structure that contains the
* configuration information.
* @note The fields pOBInit->WRPArea, pOBInit->WMSecConfig and pOBInit->BootAddrConfig
* should indicate which area/address is requested for the WRP, WM Security or
* Boot Address, else no information will be returned
*
* @retval None
*/
void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit)
{
pOBInit->OptionType = (OPTIONBYTE_RDP | OPTIONBYTE_USER);
if((pOBInit->WRPArea == OB_WRPAREA_BANK1_AREAA) || (pOBInit->WRPArea == OB_WRPAREA_BANK1_AREAB) ||
(pOBInit->WRPArea == OB_WRPAREA_BANK2_AREAA) || (pOBInit->WRPArea == OB_WRPAREA_BANK2_AREAB))
{
pOBInit->OptionType |= OPTIONBYTE_WRP;
/* Get write protection on the selected area */
FLASH_OB_GetWRP(pOBInit->WRPArea, &(pOBInit->WRPStartOffset), &(pOBInit->WRPEndOffset));
}
/* Get Read protection level */
pOBInit->RDPLevel = FLASH_OB_GetRDP();
/* Get the user option bytes */
pOBInit->USERConfig = FLASH_OB_GetUser();
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/* Get the configuration of the watermark secure area for the selected area */
if ((pOBInit->WMSecConfig == OB_WMSEC_AREA1) || (pOBInit->WMSecConfig == OB_WMSEC_AREA2))
{
pOBInit->OptionType |= OPTIONBYTE_WMSEC;
FLASH_OB_GetWMSEC(&(pOBInit->WMSecConfig), &(pOBInit->WMSecStartPage), &(pOBInit->WMSecEndPage), &(pOBInit->WMHDPEndPage));
}
pOBInit->OptionType |= OPTIONBYTE_BOOT_LOCK;
/* Get the configuration of the unique boot entry point */
pOBInit->BootLock = FLASH_OB_GetBootLock();
#endif
/* Get the value of the selected boot address */
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
if ((pOBInit->BootAddrConfig == OB_BOOTADDR_NS0) || (pOBInit->BootAddrConfig == OB_BOOTADDR_NS1) ||
(pOBInit->BootAddrConfig == OB_BOOTADDR_SEC0))
#else
if ((pOBInit->BootAddrConfig == OB_BOOTADDR_NS0) || (pOBInit->BootAddrConfig == OB_BOOTADDR_NS1))
#endif
{
pOBInit->OptionType |= OPTIONBYTE_BOOTADDR;
FLASH_OB_GetBootAddr(pOBInit->BootAddrConfig, &(pOBInit->BootAddr));
}
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/**
* @brief Configure the block-based secure area.
*
* @param pBBAttributes pointer to an FLASH_BBAttributesTypeDef structure that
* contains the configuration information for the programming.
*
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_ConfigBBAttributes(FLASH_BBAttributesTypeDef *pBBAttributes)
{
HAL_StatusTypeDef status;
uint8_t index;
__IO uint32_t *reg;
/* Check the parameters */
assert_param(IS_FLASH_BANK_EXCLUSIVE(pBBAttributes->Bank));
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
if (status == HAL_OK)
{
if (pBBAttributes->BBAttributesType == FLASH_BB_SEC)
{
if (pBBAttributes->Bank == FLASH_BANK_1)
{
reg = &(FLASH->SECBB1R1);
}
else
{
reg = &(FLASH->SECBB2R1);
}
/* Modify the register values and check that new attributes are taken in account */
for (index = 0; index < FLASH_BLOCKBASED_NB_REG; index++)
{
*reg = pBBAttributes->BBAttributes_array[index];
if (*reg != pBBAttributes->BBAttributes_array[index])
{
status = HAL_ERROR;
}
reg++;
}
}
/* ISB instruction is called to be sure next instructions are performed with correct attributes */
__ISB();
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Return the block-based secure area.
*
* @param pBBAttributes [in/out] pointer to an FLASH_BBAttributesTypeDef structure
* that contains theconfiguration information.
* @note The fields pBBAttributes->BBSecConfig should indicate which area is requested
* for the block-based security, else no information will be returned
*
* @retval None
*/
void HAL_FLASHEx_GetConfigBBAttributes(FLASH_BBAttributesTypeDef *pBBAttributes)
{
uint8_t index;
__IO uint32_t *reg;
/* Check the parameters */
assert_param(IS_FLASH_BANK_EXCLUSIVE(pBBAttributes->Bank));
if (pBBAttributes->BBAttributesType == FLASH_BB_SEC)
{
if (pBBAttributes->Bank == FLASH_BANK_1)
{
reg = &(FLASH->SECBB1R1);
}
else
{
reg = &(FLASH->SECBB2R1);
}
for (index = 0; index < FLASH_BLOCKBASED_NB_REG; index++)
{
pBBAttributes->BBAttributes_array[index] = *reg;
reg++;
}
}
}
/**
* @brief Activation of the protection of the secure hide area.
*
* @param Banks indicate the bank concerned by the activation
* This parameter can be one of the following values:
* @arg FLASH_BANK_1: Bank1
* @arg FLASH_BANK_2: Bank2
* @arg FLASH_BANK_BOTH: Bank1 & Bank2
*
* @retval None
*/
void HAL_FLASHEx_EnableSecHideProtection(uint32_t Banks)
{
/* Check the parameters */
assert_param(IS_FLASH_BANK(Banks));
if ((Banks & FLASH_BANK_1) != 0U)
{
SET_BIT(FLASH->SECHDPCR, FLASH_SECHDPCR_HDP1_ACCDIS);
}
if((Banks & FLASH_BANK_2) != 0U)
{
SET_BIT(FLASH->SECHDPCR, FLASH_SECHDPCR_HDP2_ACCDIS);
}
}
#endif
/**
* @}
*/
/** @defgroup FLASHEx_Exported_Functions_Group2 Extended Peripheral Control functions
* @brief Extended Peripheral Control functions
*
@verbatim
===============================================================================
##### Extended Peripheral Control functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the FLASH
memory operations.
@endverbatim
* @{
*/
/**
* @brief Configuration of the privilege attribute.
*
* @param PrivMode indicate privilege mode configuration
* This parameter can be one of the following values:
* @arg FLASH_PRIV_GRANTED: access to Flash registers is granted
* @arg FLASH_PRIV_DENIED: access to Flash registers is denied to non-privilege access
*
* @retval None
*/
void HAL_FLASHEx_ConfigPrivMode(uint32_t PrivMode)
{
/* Check the parameters */
assert_param(IS_FLASH_CFGPRIVMODE(PrivMode));
MODIFY_REG(FLASH->PRIVCFGR, FLASH_PRIVCFGR_PRIV, PrivMode);
}
/**
* @brief Return the value of the privilege attribute.
*
* @retval It indicates privilege mode configuration.
* This return value can be one of the following values:
* @arg FLASH_PRIV_GRANTED: access to Flash registers is granted
* @arg FLASH_PRIV_DENIED: access to Flash registers is denied to non-privilege access
*/
uint32_t HAL_FLASHEx_GetPrivMode(void)
{
return (FLASH->PRIVCFGR & FLASH_PRIVCFGR_PRIV);
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/**
* @brief Configuration of the security inversion.
*
* @param SecInvState indicate the flash security state configuration
* This parameter can be one of the following values:
* @arg FLASH_SEC_INV_DISABLE: Security state of Flash is not inverted
* @arg FLASH_SEC_INV_ENABLE: Security state of Flash is inverted
*
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_ConfigSecInversion(uint32_t SecInvState)
{
HAL_StatusTypeDef status;
/* Check the parameters */
assert_param(IS_FLASH_CFGSECINV(SecInvState));
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
if (status == HAL_OK)
{
MODIFY_REG(FLASH->SECCR, FLASH_SECCR_SECINV, SecInvState);
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Return the value of the security inversion.
*
* @retval It indicates the flash security state configuration
* This return value can be one of the following values:
* @arg FLASH_SEC_INV_DISABLE: Security state of Flash is not inverted
* @arg FLASH_SEC_INV_ENABLE: Security state of Flash is inverted
*/
uint32_t HAL_FLASHEx_GetSecInversion(void)
{
return (FLASH->SECCR & FLASH_SECCR_SECINV);
}
#endif
/**
* @brief Configuration of the LVE pin management.
*
* @param ConfigLVE indicate the LVE pin management configuration
* This parameter can be one of the following values:
* @arg FLASH_LVE_PIN_CTRL: LVEA/B FLASH pin controlled by power controller
* @arg FLASH_LVE_PIN_FORCED: LVEA/B FLASH pin enforced to low
*
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_ConfigLVEPin(uint32_t ConfigLVE)
{
HAL_StatusTypeDef status;
/* Check the parameters */
assert_param(IS_FLASH_CFGLVEPIN(ConfigLVE));
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
if (status == HAL_OK)
{
/* Check that the voltage scaling is range 2 */
if (HAL_PWREx_GetVoltageRange() == PWR_REGULATOR_VOLTAGE_SCALE2)
{
/* Unlock the bit LVEN */
FLASH->LVEKEYR = FLASH_LVEKEY1;
FLASH->LVEKEYR = FLASH_LVEKEY2;
/* Modify the value of LVEN bit */
MODIFY_REG(FLASH->ACR, FLASH_ACR_LVEN, ConfigLVE);
/* Check that the bit has been correctly configured */
if (READ_BIT(FLASH->ACR, FLASH_ACR_LVEN) != ConfigLVE)
{
status = HAL_ERROR;
}
}
else
{
/* Not allow to force Flash LVE pin if not in voltage range 2 */
status = HAL_ERROR;
}
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Return the value of the LVE pin management.
*
* @retval It indicates the LVE pin management configuration
* This return value can be one of the following values:
* @arg FLASH_LVE_PIN_CTRL: LVEA/B FLASH pin controlled by power controller
* @arg FLASH_LVE_PIN_FORCED: LVEA/B FLASH pin enforces to low
*/
uint32_t HAL_FLASHEx_GetLVEPin(void)
{
return (FLASH->ACR & FLASH_ACR_LVEN);
}
/**
* @}
*/
/**
* @}
*/
/* Private functions ---------------------------------------------------------*/
/** @addtogroup FLASHEx_Private_Functions
* @{
*/
/**
* @brief Mass erase of FLASH memory.
* @param Banks Banks to be erased
* This parameter can be one of the following values:
* @arg FLASH_BANK_1: Bank1 to be erased
* @arg FLASH_BANK_2: Bank2 to be erased
* @arg FLASH_BANK_BOTH: Bank1 and Bank2 to be erased
* @retval None
*/
static void FLASH_MassErase(uint32_t Banks)
{
__IO uint32_t *reg;
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
uint32_t primask_bit;
/* Disable interrupts to avoid any interruption */
primask_bit = __get_PRIMASK();
__disable_irq();
#endif
/* Access to SECCR or NSCR registers depends on operation type */
reg = IS_FLASH_SECURE_OPERATION() ? &(FLASH->SECCR) : &(FLASH_NS->NSCR);
if (READ_BIT(FLASH->OPTR, FLASH_OPTR_DBANK) != 0U)
{
/* Check the parameters */
assert_param(IS_FLASH_BANK(Banks));
/* Set the Mass Erase Bit for the bank 1 if requested */
if((Banks & FLASH_BANK_1) != 0U)
{
SET_BIT((*reg), FLASH_NSCR_NSMER1);
}
/* Set the Mass Erase Bit for the bank 2 if requested */
if((Banks & FLASH_BANK_2) != 0U)
{
SET_BIT((*reg), FLASH_NSCR_NSMER2);
}
}
else
{
SET_BIT((*reg), (FLASH_NSCR_NSMER1 | FLASH_NSCR_NSMER2));
}
/* Proceed to erase all sectors */
SET_BIT((*reg), FLASH_NSCR_NSSTRT);
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/* Re-enable the interrupts */
__set_PRIMASK(primask_bit);
#endif
}
/**
* @brief Erase the specified FLASH memory page.
* @param Page FLASH page to erase
* This parameter must be a value between 0 and (max number of pages in the bank - 1)
* @param Banks Bank(s) where the page will be erased
* This parameter can be one of the following values:
* @arg FLASH_BANK_1: Page in bank 1 to be erased
* @arg FLASH_BANK_2: Page in bank 2 to be erased
* @retval None
*/
void FLASH_PageErase(uint32_t Page, uint32_t Banks)
{
__IO uint32_t *reg;
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
uint32_t primask_bit;
#endif
/* Check the parameters */
assert_param(IS_FLASH_PAGE(Page));
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/* Disable interrupts to avoid any interruption */
primask_bit = __get_PRIMASK();
__disable_irq();
#endif
/* Access to SECCR or NSCR registers depends on operation type */
reg = IS_FLASH_SECURE_OPERATION() ? &(FLASH->SECCR) : &(FLASH_NS->NSCR);
if(READ_BIT(FLASH->OPTR, FLASH_OPTR_DBANK) == 0U)
{
CLEAR_BIT((*reg), FLASH_NSCR_NSBKER);
}
else
{
assert_param(IS_FLASH_BANK_EXCLUSIVE(Banks));
if((Banks & FLASH_BANK_1) != 0U)
{
CLEAR_BIT((*reg), FLASH_NSCR_NSBKER);
}
else
{
SET_BIT((*reg), FLASH_NSCR_NSBKER);
}
}
/* Proceed to erase the page */
MODIFY_REG((*reg), (FLASH_NSCR_NSPNB | FLASH_NSCR_NSPER), ((Page << FLASH_NSCR_NSPNB_Pos) | FLASH_NSCR_NSPER));
SET_BIT((*reg), FLASH_NSCR_NSSTRT);
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/* Re-enable the interrupts */
__set_PRIMASK(primask_bit);
#endif
}
/**
* @brief Configure the write protection of the desired pages.
*
* @note When the memory read protection level is selected (RDP level = 1),
* it is not possible to program or erase Flash memory if the CPU debug
* features are connected (JTAG or single wire) or boot code is being
* executed from RAM or System flash, even if WRP is not activated.
* @note To configure the WRP options, the option lock bit OPTLOCK must be
* cleared with the call of the HAL_FLASH_OB_Unlock() function.
* @note To validate the WRP options, the option bytes must be reloaded
* through the call of the HAL_FLASH_OB_Launch() function.
*
* @param WRPArea specifies the area to be configured.
* This parameter can be one of the following values:
* @arg OB_WRPAREA_BANK1_AREAA: Flash Bank 1 Area A
* @arg OB_WRPAREA_BANK1_AREAB: Flash Bank 1 Area B
* @arg OB_WRPAREA_BANK2_AREAA: Flash Bank 2 Area A
* @arg OB_WRPAREA_BANK2_AREAB: Flash Bank 2 Area B
*
* @param WRPStartOffset specifies the start page of the write protected area
* This parameter can be page number between 0 and (max number of pages in the bank - 1)
*
* @param WRPEndOffset specifies the end page of the write protected area
* This parameter can be page number between WRPStartOffset and (max number of pages in the bank - 1)
*
* @retval None
*/
static void FLASH_OB_WRPConfig(uint32_t WRPArea, uint32_t WRPStartOffset, uint32_t WRPEndOffset)
{
/* Check the parameters */
assert_param(IS_OB_WRPAREA(WRPArea));
assert_param(IS_FLASH_PAGE(WRPStartOffset));
assert_param(IS_FLASH_PAGE(WRPEndOffset));
/* Configure the write protected area */
if(WRPArea == OB_WRPAREA_BANK1_AREAA)
{
MODIFY_REG(FLASH->WRP1AR, (FLASH_WRP1AR_WRP1A_PSTRT | FLASH_WRP1AR_WRP1A_PEND),
(WRPStartOffset | (WRPEndOffset << FLASH_WRP1AR_WRP1A_PEND_Pos)));
}
else if(WRPArea == OB_WRPAREA_BANK1_AREAB)
{
MODIFY_REG(FLASH->WRP1BR, (FLASH_WRP1BR_WRP1B_PSTRT | FLASH_WRP1BR_WRP1B_PEND),
(WRPStartOffset | (WRPEndOffset << FLASH_WRP1BR_WRP1B_PEND_Pos)));
}
else if(WRPArea == OB_WRPAREA_BANK2_AREAA)
{
MODIFY_REG(FLASH->WRP2AR, (FLASH_WRP2AR_WRP2A_PSTRT | FLASH_WRP2AR_WRP2A_PEND),
(WRPStartOffset | (WRPEndOffset << FLASH_WRP2AR_WRP2A_PEND_Pos)));
}
else if(WRPArea == OB_WRPAREA_BANK2_AREAB)
{
MODIFY_REG(FLASH->WRP2BR, (FLASH_WRP2BR_WRP2B_PSTRT | FLASH_WRP2BR_WRP2B_PEND),
(WRPStartOffset | (WRPEndOffset << FLASH_WRP2BR_WRP2B_PEND_Pos)));
}
else
{
/* Empty statement (to be compliant MISRA 15.7) */
}
}
/**
* @brief Set the read protection level.
*
* @note To configure the RDP level, the option lock bit OPTLOCK must be
* cleared with the call of the HAL_FLASH_OB_Unlock() function.
* @note To validate the RDP level, the option bytes must be reloaded
* through the call of the HAL_FLASH_OB_Launch() function.
* @note !!! Warning : When enabling OB_RDP level 2 it's no more possible
* to go back to other levels !!!
*
* @param RDPLevel specifies the read protection level.
* This parameter can be one of the following values:
* @arg OB_RDP_LEVEL_0: No protection
* @arg OB_RDP_LEVEL_0_5: No debug access to secure area
* @arg OB_RDP_LEVEL_1: Read protection of the memory
* @arg OB_RDP_LEVEL_2: Full chip protection
*
* @retval None
*/
static void FLASH_OB_RDPConfig(uint32_t RDPLevel)
{
/* Check the parameters */
assert_param(IS_OB_RDP_LEVEL(RDPLevel));
/* Configure the RDP level in the option bytes register */
MODIFY_REG(FLASH->OPTR, FLASH_OPTR_RDP, RDPLevel);
}
/**
* @brief Program the FLASH User Option Byte.
*
* @note To configure the user option bytes, the option lock bit OPTLOCK must
* be cleared with the call of the HAL_FLASH_OB_Unlock() function.
* @note To validate the user option bytes, the option bytes must be reloaded
* through the call of the HAL_FLASH_OB_Launch() function.
*
* @param UserType The FLASH User Option Bytes to be modified
* This parameter can be a combination of @ref FLASH_OB_USER_Type
* @param UserConfig The FLASH User Option Bytes values.
* It can be a combination of @ref FLASH_OB_USER_BOR_LEVEL,
* @ref FLASH_OB_USER_nRST_STOP, @ref FLASH_OB_USER_nRST_STANDBY,
* @ref FLASH_OB_USER_nRST_SHUTDOWN, @ref FLASH_OB_USER_IWDG_SW,
* @ref FLASH_OB_USER_IWDG_STOP, @ref FLASH_OB_USER_IWDG_STANDBY,
* @ref FLASH_OB_USER_WWDG_SW, @ref OB_USER_SWAP_BANK,
* @ref FLASH_OB_USER_DUALBANK, @ref FLASH_OB_USER_DBANK,
* @ref FLASH_OB_USER_SRAM2_PAR, @ref FLASH_OB_USER_SRAM2_RST,
* @ref OB_USER_nSWBOOT0, @ref OB_USER_nBOOT0, @ref FLASH_OB_USER_PA15_PUPEN
* and @ref OB_USER_TZEN
*
* @retval None
*/
static void FLASH_OB_UserConfig(uint32_t UserType, uint32_t UserConfig)
{
uint32_t optr_reg_val = 0;
uint32_t optr_reg_mask = 0;
/* Check the parameters */
assert_param(IS_OB_USER_TYPE(UserType));
if((UserType & OB_USER_BOR_LEV) != 0U)
{
/* BOR level option byte should be modified */
assert_param(IS_OB_USER_BOR_LEVEL(UserConfig & FLASH_OPTR_BOR_LEV));
/* Set value and mask for BOR level option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_BOR_LEV);
optr_reg_mask |= FLASH_OPTR_BOR_LEV;
}
if((UserType & OB_USER_nRST_STOP) != 0U)
{
/* nRST_STOP option byte should be modified */
assert_param(IS_OB_USER_STOP(UserConfig & FLASH_OPTR_nRST_STOP));
/* Set value and mask for nRST_STOP option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_nRST_STOP);
optr_reg_mask |= FLASH_OPTR_nRST_STOP;
}
if((UserType & OB_USER_nRST_STDBY) != 0U)
{
/* nRST_STDBY option byte should be modified */
assert_param(IS_OB_USER_STANDBY(UserConfig & FLASH_OPTR_nRST_STDBY));
/* Set value and mask for nRST_STDBY option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_nRST_STDBY);
optr_reg_mask |= FLASH_OPTR_nRST_STDBY;
}
if((UserType & OB_USER_nRST_SHDW) != 0U)
{
/* nRST_SHDW option byte should be modified */
assert_param(IS_OB_USER_SHUTDOWN(UserConfig & FLASH_OPTR_nRST_SHDW));
/* Set value and mask for nRST_SHDW option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_nRST_SHDW);
optr_reg_mask |= FLASH_OPTR_nRST_SHDW;
}
if((UserType & OB_USER_IWDG_SW) != 0U)
{
/* IWDG_SW option byte should be modified */
assert_param(IS_OB_USER_IWDG(UserConfig & FLASH_OPTR_IWDG_SW));
/* Set value and mask for IWDG_SW option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_IWDG_SW);
optr_reg_mask |= FLASH_OPTR_IWDG_SW;
}
if((UserType & OB_USER_IWDG_STOP) != 0U)
{
/* IWDG_STOP option byte should be modified */
assert_param(IS_OB_USER_IWDG_STOP(UserConfig & FLASH_OPTR_IWDG_STOP));
/* Set value and mask for IWDG_STOP option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_IWDG_STOP);
optr_reg_mask |= FLASH_OPTR_IWDG_STOP;
}
if((UserType & OB_USER_IWDG_STDBY) != 0U)
{
/* IWDG_STDBY option byte should be modified */
assert_param(IS_OB_USER_IWDG_STDBY(UserConfig & FLASH_OPTR_IWDG_STDBY));
/* Set value and mask for IWDG_STDBY option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_IWDG_STDBY);
optr_reg_mask |= FLASH_OPTR_IWDG_STDBY;
}
if((UserType & OB_USER_WWDG_SW) != 0U)
{
/* WWDG_SW option byte should be modified */
assert_param(IS_OB_USER_WWDG(UserConfig & FLASH_OPTR_WWDG_SW));
/* Set value and mask for WWDG_SW option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_WWDG_SW);
optr_reg_mask |= FLASH_OPTR_WWDG_SW;
}
if((UserType & OB_USER_SWAP_BANK) != 0U)
{
/* SWAP_BANK option byte should be modified */
assert_param(IS_OB_USER_SWAP_BANK(UserConfig & FLASH_OPTR_SWAP_BANK));
/* Set value and mask for SWAP_BANK option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_SWAP_BANK);
optr_reg_mask |= FLASH_OPTR_SWAP_BANK;
}
if((UserType & OB_USER_DUALBANK) != 0U)
{
/* DUALBANK option byte should be modified */
assert_param(IS_OB_USER_DUALBANK(UserConfig & FLASH_OPTR_DB256K));
/* Set value and mask for DB256K option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_DB256K);
optr_reg_mask |= FLASH_OPTR_DB256K;
}
if((UserType & OB_USER_SRAM2_PE) != 0U)
{
/* SRAM2_PAR option byte should be modified */
assert_param(IS_OB_USER_SRAM2_PARITY(UserConfig & FLASH_OPTR_SRAM2_PE));
/* Set value and mask for SRAM2_PAR option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_SRAM2_PE);
optr_reg_mask |= FLASH_OPTR_SRAM2_PE;
}
if((UserType & OB_USER_SRAM2_RST) != 0U)
{
/* SRAM2_RST option byte should be modified */
assert_param(IS_OB_USER_SRAM2_RST(UserConfig & FLASH_OPTR_SRAM2_RST));
/* Set value and mask for SRAM2_RST option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_SRAM2_RST);
optr_reg_mask |= FLASH_OPTR_SRAM2_RST;
}
if((UserType & OB_USER_nSWBOOT0) != 0U)
{
/* nSWBOOT0 option byte should be modified */
assert_param(IS_OB_USER_SWBOOT0(UserConfig & FLASH_OPTR_nSWBOOT0));
/* Set value and mask for nSWBOOT0 option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_nSWBOOT0);
optr_reg_mask |= FLASH_OPTR_nSWBOOT0;
}
if((UserType & OB_USER_nBOOT0) != 0U)
{
/* nBOOT0 option byte should be modified */
assert_param(IS_OB_USER_BOOT0(UserConfig & FLASH_OPTR_nBOOT0));
/* Set value and mask for nBOOT0 option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_nBOOT0);
optr_reg_mask |= FLASH_OPTR_nBOOT0;
}
if((UserType & OB_USER_PA15_PUPEN) != 0U)
{
/* nBOOT0 option byte should be modified */
assert_param(IS_OB_USER_PA15_PUPEN(UserConfig & FLASH_OPTR_PA15_PUPEN));
/* Set value and mask for nBOOT0 option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_PA15_PUPEN);
optr_reg_mask |= FLASH_OPTR_PA15_PUPEN;
}
if((UserType & OB_USER_TZEN) != 0U)
{
/* TZEN option byte should be modified */
assert_param(IS_OB_USER_TZEN(UserConfig & FLASH_OPTR_TZEN));
/* Set value and mask for TZEN option byte */
optr_reg_val |= (UserConfig & FLASH_OPTR_TZEN);
optr_reg_mask |= FLASH_OPTR_TZEN;
}
/* Configure the option bytes register */
MODIFY_REG(FLASH->OPTR, optr_reg_mask, optr_reg_val);
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/**
* @brief Configure the watermarked-based secure area.
*
* @param WMSecConfig specifies the area to be configured.
* This parameter can be a combination of the following values:
* @arg OB_WMSEC_AREA1 or @arg OB_WMSEC_AREA2: Select Flash Secure Area 1 or Area 2
* @arg OB_WMSEC_SECURE_AREA_CONFIG: configure Flash Secure Area
* @arg OB_WMSEC_HDP_AREA_CONFIG: configure Flash secure hide Area
* @arg OB_WMSEC_HDP_AREA_ENABLE: enable secure hide Area in Secure Area
* @arg OB_WMSEC_HDP_AREA_DISABLE: disable secure hide Area in Secure Area
*
* @param WMSecStartPage specifies the start page of the secure area
* This parameter can be page number between 0 and (max number of pages in the bank - 1)
*
* @param WMSecEndPage specifies the end page of the secure area
* This parameter can be page number between WMSecStartPage and (max number of pages in the bank - 1)
*
* @param WMHDPEndPage specifies the end page of the secure hide area
* This parameter can be page number between WMSecStartPage and WMPCROPStartPage
*
* @retval None
*/
static void FLASH_OB_WMSECConfig(uint32_t WMSecConfig, uint32_t WMSecStartPage, uint32_t WMSecEndPage, uint32_t WMHDPEndPage)
{
uint32_t tmp_secwm1 = 0U, tmp_secwm2 = 0U;
/* Check the parameters */
assert_param(IS_OB_WMSEC_CONFIG(WMSecConfig));
assert_param(IS_OB_WMSEC_AREA_EXCLUSIVE(WMSecConfig & 0x3U));
assert_param(IS_FLASH_PAGE(WMSecStartPage));
assert_param(IS_FLASH_PAGE(WMSecEndPage));
assert_param(IS_FLASH_PAGE(WMHDPEndPage));
/* Read SECWM registers */
if ((WMSecConfig & OB_WMSEC_AREA1) != 0U)
{
tmp_secwm1 = FLASH->SECWM1R1;
tmp_secwm2 = FLASH->SECWM1R2;
}
else if ((WMSecConfig & OB_WMSEC_AREA2) != 0U)
{
tmp_secwm1 = FLASH->SECWM2R1;
tmp_secwm2 = FLASH->SECWM2R2;
}
else
{
/* Nothing to do */
}
/* Configure Secure Area */
if ((WMSecConfig & OB_WMSEC_SECURE_AREA_CONFIG) != 0U)
{
MODIFY_REG(tmp_secwm1, (FLASH_SECWM1R1_SECWM1_PSTRT | FLASH_SECWM1R1_SECWM1_PEND),
((WMSecEndPage << FLASH_SECWM1R1_SECWM1_PEND_Pos) | WMSecStartPage));
}
/* Configure Secure Hide Area */
if ((WMSecConfig & OB_WMSEC_HDP_AREA_CONFIG) != 0U)
{
tmp_secwm2 &= (~(FLASH_SECWM1R2_HDP1_PEND));
tmp_secwm2 |= (WMHDPEndPage << FLASH_SECWM1R2_HDP1_PEND_Pos);
}
/* Enable Secure Hide Area */
if ((WMSecConfig & OB_WMSEC_HDP_AREA_ENABLE) != 0U)
{
tmp_secwm2 |= FLASH_SECWM1R2_HDP1EN;
}
/* Disable Secure Hide Area */
if ((WMSecConfig & OB_WMSEC_HDP_AREA_DISABLE) != 0U)
{
tmp_secwm2 &= (~FLASH_SECWM1R2_HDP1EN);
}
/* Write SECWM registers */
if ((WMSecConfig & OB_WMSEC_AREA1) != 0U)
{
FLASH->SECWM1R1 = tmp_secwm1;
FLASH->SECWM1R2 = tmp_secwm2;
}
else if ((WMSecConfig & OB_WMSEC_AREA2) != 0U)
{
FLASH->SECWM2R1 = tmp_secwm1;
FLASH->SECWM2R2 = tmp_secwm2;
}
else
{
/* Nothing to do */
}
}
/**
* @brief Configure the boot lock.
*
* @param BootLockConfig specifies the activation of the BOOT_LOCK.
* This parameter can be one of the following values:
* @arg OB_BOOT_LOCK_DISABLE: Boot Lock mode deactivated
* @arg OB_BOOT_LOCK_ENABLE: Boot Lock mode activated
*
* @retval None
*/
static void FLASH_OB_BootLockConfig(uint32_t BootLockConfig)
{
/* Check the parameters */
assert_param(IS_OB_BOOT_LOCK(BootLockConfig));
/* Configure the option bytes register */
MODIFY_REG(FLASH->SECBOOTADD0R, FLASH_SECBOOTADD0R_BOOT_LOCK, BootLockConfig);
}
#endif
/**
* @brief Configure the boot address.
*
* @param BootAddrConfig specifies the area to be configured.
* This parameter can be one of the following values:
* @arg OB_BOOTADDR_NS0: Non-secure boot address 0
* @arg OB_BOOTADDR_NS1: Non-secure boot address 1
* @arg OB_BOOTADDR_SEC0: Secure boot address 0
*
* @param BootAddr: specifies the address used for the boot
* This parameter can be page number between 0 and 0xFFFFFF00
*
* @retval None
*/
static void FLASH_OB_BootAddrConfig(uint32_t BootAddrConfig, uint32_t BootAddr)
{
/* Check the parameters */
assert_param(IS_OB_BOOTADDR_CONFIG(BootAddrConfig));
if (BootAddrConfig == OB_BOOTADDR_NS0)
{
MODIFY_REG(FLASH->NSBOOTADD0R, FLASH_NSBOOTADD0R_NSBOOTADD0, BootAddr);
}
else if (BootAddrConfig == OB_BOOTADDR_NS1)
{
MODIFY_REG(FLASH->NSBOOTADD1R, FLASH_NSBOOTADD1R_NSBOOTADD1, BootAddr);
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
else if (BootAddrConfig == OB_BOOTADDR_SEC0)
{
MODIFY_REG(FLASH->SECBOOTADD0R, FLASH_SECBOOTADD0R_SECBOOTADD0, BootAddr);
}
#endif
else
{
/* Empty statement (to be compliant MISRA 15.7) */
}
}
/**
* @brief Return the FLASH Write Protection Option Bytes value.
*
* @param[in] WRPArea specifies the area to be returned.
* This parameter can be one of the following values:
* @arg OB_WRPAREA_BANK1_AREAA: Flash Bank 1 Area A
* @arg OB_WRPAREA_BANK1_AREAB: Flash Bank 1 Area B
* @arg OB_WRPAREA_BANK2_AREAA: Flash Bank 2 Area A
* @arg OB_WRPAREA_BANK2_AREAB: Flash Bank 2 Area B
*
* @param[out] WRPStartOffset specifies the address where to copied the start page
* of the write protected area
*
* @param[out] WRPEndOffset specifies the address where to copied the end page of
* the write protected area
*
* @retval None
*/
static void FLASH_OB_GetWRP(uint32_t WRPArea, uint32_t * WRPStartOffset, uint32_t * WRPEndOffset)
{
/* Get the configuration of the write protected area */
if(WRPArea == OB_WRPAREA_BANK1_AREAA)
{
*WRPStartOffset = READ_BIT(FLASH->WRP1AR, FLASH_WRP1AR_WRP1A_PSTRT);
*WRPEndOffset = (READ_BIT(FLASH->WRP1AR, FLASH_WRP1AR_WRP1A_PEND) >> FLASH_WRP1AR_WRP1A_PEND_Pos);
}
else if(WRPArea == OB_WRPAREA_BANK1_AREAB)
{
*WRPStartOffset = READ_BIT(FLASH->WRP1BR, FLASH_WRP1BR_WRP1B_PSTRT);
*WRPEndOffset = (READ_BIT(FLASH->WRP1BR, FLASH_WRP1BR_WRP1B_PEND) >> FLASH_WRP1BR_WRP1B_PEND_Pos);
}
else if(WRPArea == OB_WRPAREA_BANK2_AREAA)
{
*WRPStartOffset = READ_BIT(FLASH->WRP2AR, FLASH_WRP2AR_WRP2A_PSTRT);
*WRPEndOffset = (READ_BIT(FLASH->WRP2AR, FLASH_WRP2AR_WRP2A_PEND) >> FLASH_WRP2AR_WRP2A_PEND_Pos);
}
else if(WRPArea == OB_WRPAREA_BANK2_AREAB)
{
*WRPStartOffset = READ_BIT(FLASH->WRP2BR, FLASH_WRP2BR_WRP2B_PSTRT);
*WRPEndOffset = (READ_BIT(FLASH->WRP2BR, FLASH_WRP2BR_WRP2B_PEND) >> FLASH_WRP2BR_WRP2B_PEND_Pos);
}
else
{
/* Empty statement (to be compliant MISRA 15.7) */
}
}
/**
* @brief Return the FLASH Read Protection level.
* @retval FLASH ReadOut Protection Status:
* This return value can be one of the following values:
* @arg OB_RDP_LEVEL_0: No protection
* @arg OB_RDP_LEVEL_0_5: No debug access to secure area
* @arg OB_RDP_LEVEL_1: Read protection of the memory
* @arg OB_RDP_LEVEL_2: Full chip protection
*/
static uint32_t FLASH_OB_GetRDP(void)
{
uint32_t rdp_level = READ_BIT(FLASH->OPTR, FLASH_OPTR_RDP);
if ((rdp_level != OB_RDP_LEVEL_0) && (rdp_level != OB_RDP_LEVEL_0_5) && (rdp_level != OB_RDP_LEVEL_2))
{
return (OB_RDP_LEVEL_1);
}
else
{
return (rdp_level);
}
}
/**
* @brief Return the FLASH User Option Byte value.
* @retval The FLASH User Option Bytes values,
* it can be a combination of @ref FLASH_OB_USER_BOR_LEVEL,
* @ref FLASH_OB_USER_nRST_STOP, @ref FLASH_OB_USER_nRST_STANDBY,
* @ref FLASH_OB_USER_nRST_SHUTDOWN, @ref FLASH_OB_USER_IWDG_SW,
* @ref FLASH_OB_USER_IWDG_STOP, @ref FLASH_OB_USER_IWDG_STANDBY,
* @ref FLASH_OB_USER_WWDG_SW, @ref OB_USER_SWAP_BANK,
* @ref FLASH_OB_USER_DUALBANK, @ref FLASH_OB_USER_DBANK,
* @ref FLASH_OB_USER_SRAM2_PAR, @ref FLASH_OB_USER_SRAM2_RST,
* @ref OB_USER_nSWBOOT0, @ref OB_USER_nBOOT0, @ref FLASH_OB_USER_PA15_PUPEN
* and @ref OB_USER_TZEN
*/
static uint32_t FLASH_OB_GetUser(void)
{
uint32_t user_config = READ_REG(FLASH->OPTR);
CLEAR_BIT(user_config, FLASH_OPTR_RDP);
return user_config;
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
/**
* @brief Return the watermarked-based secure area.
*
* @param WMSecConfig [in/out] specifies the area to be returned.
* This parameter can be one of the following values:
* @arg OB_WMSEC_AREA1: Flash Secure Area 1
* @arg OB_WMSEC_AREA2: Flash Secure Area 2
* When return from the function, this parameter will have a combination of the following values:
* @arg OB_WMSEC_AREA1 or @arg OB_WMSEC_AREA2: selected Flash Secure Area 1 or Area 2
* @arg OB_WMSEC_HDP_AREA_ENABLE: Secure Hide Area in Secure Area enabled
* @arg OB_WMSEC_HDP_AREA_DISABLE: Secure Hide Area in Secure Area disabled
*
* @param WMSecStartPage [out] specifies the address where to copied the start page of the secure area
*
* @param WMSecEndPage [out] specifies the address where to copied the end page of the secure area
*
* @param WMHDPEndPage [out] specifies the address where to copied the end page of the secure hide area
*
* @retval None
*/
static void FLASH_OB_GetWMSEC(uint32_t * WMSecConfig, uint32_t * WMSecStartPage, uint32_t * WMSecEndPage, uint32_t * WMHDPEndPage)
{
uint32_t tmp_secwm1 = 0U, tmp_secwm2 = 0U;
/* Check the parameters */
assert_param(IS_OB_WMSEC_CONFIG(*WMSecConfig));
assert_param(IS_FLASH_BANK_EXCLUSIVE((*WMSecConfig) & 0x3U));
/* Read SECWM registers */
if (((*WMSecConfig) & OB_WMSEC_AREA1) != 0U)
{
tmp_secwm1 = FLASH->SECWM1R1;
tmp_secwm2 = FLASH->SECWM1R2;
}
else if (((*WMSecConfig) & OB_WMSEC_AREA2) != 0U)
{
tmp_secwm1 = FLASH->SECWM2R1;
tmp_secwm2 = FLASH->SECWM2R2;
}
else
{
/* Nothing to do */
}
/* Configuration of secure area */
*WMSecStartPage = (tmp_secwm1 & FLASH_SECWM1R1_SECWM1_PSTRT);
*WMSecEndPage = ((tmp_secwm1 & FLASH_SECWM1R1_SECWM1_PEND) >> FLASH_SECWM1R1_SECWM1_PEND_Pos);
/* Configuration of secure hide area */
*WMHDPEndPage = ((tmp_secwm2 & FLASH_SECWM1R2_HDP1_PEND) >> FLASH_SECWM1R2_HDP1_PEND_Pos);
if ((tmp_secwm2 & FLASH_SECWM1R2_HDP1EN) == 0U)
{
*WMSecConfig = ((*WMSecConfig) | OB_WMSEC_HDP_AREA_DISABLE);
}
else
{
*WMSecConfig = ((*WMSecConfig) | OB_WMSEC_HDP_AREA_ENABLE);
}
}
/**
* @brief Return the boot lock configuration.
*
* @retval Value of Boot Lock configuration.
* It can be one of the following values:
* @arg OB_BOOT_LOCK_DISABLE: Boot Lock mode deactivated
* @arg OB_BOOT_LOCK_ENABLE: Boot Lock mode activated
*/
static uint32_t FLASH_OB_GetBootLock(void)
{
return (FLASH->SECBOOTADD0R & FLASH_SECBOOTADD0R_BOOT_LOCK);
}
#endif
/**
* @brief Return the boot address.
*
* @param[in] BootAddrConfig specifies the area to be returned.
* This parameter can be one of the following values:
* @arg OB_BOOTADDR_NS0: Non-secure boot address 0
* @arg OB_BOOTADDR_NS1: Non-secure boot address 1
* @arg OB_BOOTADDR_SEC0: Secure boot address 0
*
* @param[out] BootAddr specifies the boot address value
*
* @retval None
*/
static void FLASH_OB_GetBootAddr(uint32_t BootAddrConfig, uint32_t * BootAddr)
{
if (BootAddrConfig == OB_BOOTADDR_NS0)
{
*BootAddr = (FLASH->NSBOOTADD0R & FLASH_NSBOOTADD0R_NSBOOTADD0);
}
else if (BootAddrConfig == OB_BOOTADDR_NS1)
{
*BootAddr = (FLASH->NSBOOTADD1R & FLASH_NSBOOTADD1R_NSBOOTADD1);
}
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
else if (BootAddrConfig == OB_BOOTADDR_SEC0)
{
*BootAddr = (FLASH->SECBOOTADD0R & FLASH_SECBOOTADD0R_SECBOOTADD0);
}
#endif
else
{
/* Empty statement (to be compliant MISRA 15.7) */
}
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_FLASH_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/