mirror of https://github.com/ARMmbed/mbed-os.git
234 lines
6.8 KiB
C
234 lines
6.8 KiB
C
/* mbed Microcontroller Library
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*******************************************************************************
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* Copyright (c) 2017, STMicroelectronics
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************
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*/
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#if DEVICE_FLASH
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#include "flash_api.h"
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#include "flash_data.h"
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#include "platform/mbed_critical.h"
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// This file is automatically generated
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static uint32_t GetSector(uint32_t Address);
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static uint32_t GetSectorSize(uint32_t Sector);
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int32_t flash_init(flash_t *obj)
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{
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return 0;
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}
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int32_t flash_free(flash_t *obj)
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{
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return 0;
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}
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static int32_t flash_unlock(void)
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{
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/* Allow Access to Flash control registers and user Falsh */
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if (HAL_FLASH_Unlock()) {
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return -1;
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} else {
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return 0;
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}
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}
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static int32_t flash_lock(void)
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{
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/* Disable the Flash option control register access (recommended to protect
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the option Bytes against possible unwanted operations) */
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if (HAL_FLASH_Lock()) {
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return -1;
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} else {
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return 0;
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}
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}
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int32_t flash_erase_sector(flash_t *obj, uint32_t address)
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{
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/*Variable used for Erase procedure*/
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static FLASH_EraseInitTypeDef EraseInitStruct;
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uint32_t FirstSector;
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uint32_t SectorError = 0;
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int32_t status = 0;
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if ((address >= (FLASH_BASE + FLASH_SIZE)) || (address < FLASH_BASE)) {
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return -1;
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}
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if (flash_unlock() != HAL_OK) {
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return -1;
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}
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/* Get the 1st sector to erase */
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FirstSector = GetSector(address);
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/* Fill EraseInit structure*/
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
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EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
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EraseInitStruct.Sector = FirstSector;
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EraseInitStruct.NbSectors = 1;
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if(HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK){
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status = -1;
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}
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flash_lock();
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return status;
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}
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int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
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{
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int32_t status = 0;
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if ((address >= (FLASH_BASE + FLASH_SIZE)) || (address < FLASH_BASE)) {
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return -1;
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}
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if (flash_unlock() != HAL_OK) {
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return -1;
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}
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/* Note: If an erase operation in Flash memory also concerns data in the data or instruction cache,
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you have to make sure that these data are rewritten before they are accessed during code
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execution. If this cannot be done safely, it is recommended to flush the caches by setting the
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DCRST and ICRST bits in the FLASH_CR register. */
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__HAL_FLASH_DATA_CACHE_DISABLE();
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__HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
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__HAL_FLASH_DATA_CACHE_RESET();
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__HAL_FLASH_INSTRUCTION_CACHE_RESET();
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__HAL_FLASH_INSTRUCTION_CACHE_ENABLE();
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__HAL_FLASH_DATA_CACHE_ENABLE();
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while ((size > 0) && (status == 0)) {
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, address, (uint64_t)*data) != HAL_OK) {
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status = -1;
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} else {
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size--;
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address++;
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data++;
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}
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}
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flash_lock();
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return status;
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}
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uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
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{
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if ((address >= (FLASH_BASE + FLASH_SIZE)) || (address < FLASH_BASE)) {
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return MBED_FLASH_INVALID_SIZE;
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}
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return (GetSectorSize(GetSector(address)));
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}
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uint32_t flash_get_page_size(const flash_t *obj)
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{
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// Flash of STM32F4 devices can be programed 1 byte at a time
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return (1);
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}
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uint32_t flash_get_start_address(const flash_t *obj)
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{
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return FLASH_BASE;
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}
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uint32_t flash_get_size(const flash_t *obj)
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{
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return FLASH_SIZE;
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}
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/**
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* @brief Gets the sector of a given address
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* @param None
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* @retval The sector of a given address
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*/
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static uint32_t GetSector(uint32_t address)
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{
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uint32_t sector = 0;
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uint32_t tmp = address - ADDR_FLASH_SECTOR_0;
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/* This function supports 1Mb and 2Mb flash sizes */
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#if defined(ADDR_FLASH_SECTOR_16)
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if (address & 0x100000) { // handle 2nd bank
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/* Sector will be at least 12 */
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sector = FLASH_SECTOR_12;
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tmp -= 0x100000;
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address -= 0x100000;
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}
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#endif
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if (address < ADDR_FLASH_SECTOR_4) { // 16k sectorsize
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sector += tmp >>14;
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}
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#if defined(ADDR_FLASH_SECTOR_5)
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else if (address < ADDR_FLASH_SECTOR_5) { //64k sector size
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sector += FLASH_SECTOR_4;
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} else {
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sector += 4 + (tmp >>17);
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}
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#else
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// In case ADDR_FLASH_SECTOR_5 is not defined, sector 4 is the last one.
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else { //64k sector size
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sector += FLASH_SECTOR_4;
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}
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#endif
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return sector;
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}
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/**
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* @brief Gets sector Size
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* @param None
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* @retval The size of a given sector
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*/
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static uint32_t GetSectorSize(uint32_t Sector)
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{
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uint32_t sectorsize = 0x00;
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#if defined(FLASH_SECTOR_16)
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if((Sector == FLASH_SECTOR_0) || (Sector == FLASH_SECTOR_1) || (Sector == FLASH_SECTOR_2) ||\
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(Sector == FLASH_SECTOR_3) || (Sector == FLASH_SECTOR_12) || (Sector == FLASH_SECTOR_13) ||\
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(Sector == FLASH_SECTOR_14) || (Sector == FLASH_SECTOR_15)) {
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sectorsize = 16 * 1024;
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} else if((Sector == FLASH_SECTOR_4) || (Sector == FLASH_SECTOR_16)) {
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#else
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if((Sector == FLASH_SECTOR_0) || (Sector == FLASH_SECTOR_1) || (Sector == FLASH_SECTOR_2) ||\
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(Sector == FLASH_SECTOR_3)) {
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sectorsize = 16 * 1024;
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} else if(Sector == FLASH_SECTOR_4) {
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#endif
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sectorsize = 64 * 1024;
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} else {
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sectorsize = 128 * 1024;
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}
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return sectorsize;
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}
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#endif
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